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HomeMy WebLinkAboutDSHW-2022-027847 - 0901a068811489aeState of Utah Mail -Recycled Earth I Final Site Characterization Plan & responses to comments Deq submit <dwmrcsubmit@utah.gov> Recycled Earth I Final Site Characterization Plan & responses to comments 1 message Cahoon, Brad R.<brad.cahoon@dentons.com> Thu, Dec 29, 2022 at 9:16 PM To: "djhansen@utah.gov" <djhansen@utah.gov>, "dwmrcsubmit@utah.gov" <dwmrcsubmit@utah.gov> Cc: "DavidWilson.Wilson@tetratech.com" <DavidWilson.Wilson@tetratech.com>, "Rasmuson, Anna" <Anna.Rasmuson@tetratech.com>, "Cahoon, Brad R."<brad.cahoon@dentons.com>, "Cahoon, Tyler R." <tyler.cahoon@dentons.com>, "Raymond Wixom (rwixom@agutah.gov)" <rwixom@agutah.gov>, "Tanner, James" <JamesTanner@ogdencity.com>, Jennifer Huntsman <JSHuntsman@hollandhart.com>, "Wadman, Heather" <HeatherWadman@ogdencity.com>, "sddehnert@utah.gov" <sddehnert@utah.gov> Hello Director Hansen, Thank you again for granting Recycled Earth an extension of time until tomorrow, December 30, 2022, to submit the updated Final Site Characterization Plan and respond to your comments and Ogden City's comments. We appreciate your cooperation with and attention to this matter. I have copied representatives of Ogden City for their visibility on this submission to you. Attached are the following PDF files: •Final Site Characterization Plan •Response to UDEQ Comments •Response to Ogden City Comments We are hopeful that you and Ogden City will approve swiftly the Final Site Characterization Plan so that work may commence as soon as possible. Please let us know if you have any questions or concerns. Many thanks, Brad _j.;;_JllDENTONS DURHAM JONES PINIEcGAR Bradley R. Cahoon Shareholder, US Environmental Practice Co-Leader What's Next? The answer is Talent. With more than 20,000 people, 12,000 lawyers and 200 locations, Dentons has the talent for what you need, where you need it. 0 +1 801 375 6600 I M +1 801 671 3030 I US Internal 801270 brad.cahoon@dentons.com Bio I Website Dentons Durham Jones Pinegar P.C. 3301 North Thanksgiving Way, Suite 400, Lehi, UT 84043 1/2 DSHW-2022-027847 3 attachments State of Utah Mail -Recycled Earth I Final Site Characterization Plan & responses to comments LuatViet > Fernanda Lopes & Associados > Guevara & Gutierrez > Paz Horowitz Abogados > Sirote > Adepetun Caxton-Martins Agbor & Segun > Davis Brown > East African Law Chambers > Eric Silwamba, Jalasi and Linyama > Durham Jones & Pinegar > LEAD Advogados > For more information on the firms that have come together to form Dentons, go to dentons.com/legacyfirms Dentons is a global legal practice providing client services worldwide through its member firms and affiliates. This email may be confidential and protected by legal privilege. 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Please see dentons.com for Legal Notices. � Final lnvestigationPlan_Recycled Earth.pdf 13396K � Response to UDEQ Comments.pdf 200K � Response to Ogden City Comments.pdf 182K 2/2 Section No.Commentor Comment Tetra Tech Response Ogden City Follow‐Up Comment Tetra Tech Response 2.2 Holland & Hart We recommend that this text be deleted. Even the account of the facts in this report  suggests that there likely have been releases of liquid waste on the Recycled Earth  property and into the MS4 likely since at least as early as February 2022.  Tetra Tech revised this statement to reference the Site history denoting  February as the time when Recycled Earth began accepting water. 2.2 Holland & Hart Recycled Earth has informed Ogden that this is the subject of a dispute and potential  lawsuit between Beck Sanitation and Recycled Earth. As such, this does not appear  appropriate for this draft investigation plan.  Recycled Earth will retain these facts in this section on “Historical  Releases,” but remove further reiteration of this statement as noted in  subsequent comments in the plan. Holland & Harts prior comments shall be addressed completely. Recycled  Earth's authorization or knowledge of these activities does not inform the  investigation of the site. Thus, they are neither necessary nor appropriate  for the Investigation Plan. Any references to Recycled Earth's knowledge or  authorization for these activities should be removed. Instead, the  Investigation Plan should simply state what occurred without referencing  disputed facts.  There is evidence supporting the allegations and  identifying potential sources of impacts under  investigation is helpful for Site characterization. We have  included the case number for the ongoing  lawsuit in the  Historical Releases section of the Plan. 2.2 Holland & Hart See comment immediately above. Recycled Earth will retain these facts in this section on “Historical  Releases,” but remove further reiteration of this statement as noted in  subsequent comments in the plan. Holland & Harts prior comments shall be addressed completely. Recycled  Earth's authorization or knowledge of these activities does not inform the  investigation of the site. Thus, they are neither necessary nor appropriate  for the Investigation Plan. Any references to Recycled Earth's knowledge or  authorization for these activities should be removed. Instead, the  Investigation Plan should simply state what occurred without referencing  disputed facts.  There is evidence supporting the allegations and  identifying potential sources of impacts under  investigation is helpful for Site characterization. We have  included the case number for the ongoing  lawsuit in the  Historical Releases section of the Plan. 2.2 Holland & Hart Please include the following relevant facts: Tetra Tech has included these facts in the timeline.  2.2 Holland & Hart Please include the following relevant facts: Tetra Tech has included these facts in the timeline with minor grammatical  correction. 2.3.2 Holland & Hart See comments above. This is the subject of a dispute between Beck Sanitation and  Recycled Earth. It does not inform the key issues in this Site Characterization Report. Revision accepted. 2.4 Holland & Hart Please see comments above. Revision accepted. 2.4 Holland & Hart See comments above. Revision accepted.   Holland & Hart An application to DEQ is required to obtain coverage under the MSGP: https://deq.utah.gov/water‐quality/general‐multi‐sector‐industrial‐storm‐water‐permit‐ updes‐permits#noi Is permit coverage in place?  Yes, and a copy of the completed NOI and related SWPPP were submitted  to Ogden City on November 8, 2022. TOC Ogden City General comments for all tables.  Please list the laboratory method reporting/detection  limit rather than ND.  If ND at reporting limit 0.005 mg/L, please report as <0.005.  For  comparison to appropriate regulatory concentration, please add the Utah GW quality  standards for metals water samples and the U.S. EPA MCLs where established for  compounds which do not have a Utah Initial Screening Level. UDEQ Groundwater  Initial Screening Levels (mg/L) should have metals as well to show  that the levels for arsenic are elevated. Tetra Tech has replaced ND with laboratory reporting limits. UDEQ Groundwater Quality Standards have been added to the tables. EPA  MCLs were not added as they were equal to UDEQ Groundwater Quality  Standards.  UDEQ Groundwater Initial Screening levels do not include metals.  Something we noticed was that the tables were updated, but the body of  the text seemed to stay the same. Should exceedances of the groundwater  quality standards be referenced in the appropriate sections consistent with  mention of other exceedances relevant to UDEQ Groundwater ISLs? Descriptions of UDEQ Groundwater Quality Standard  exceedances have been added to the text. The UDEQ  Groundwater ISLs have been removed per DSHW's  comments.   TOC Ogden City Please produce a site map of the Property with additional detail at a usable scale to  include the area near the maintenance building where oily soil was over excavated, as  well as the location of the “south trench” described as being located at the south portion  of the Property.  Also please label approximate locations and areal extent of the storm  water retention areas. An additional figure showing the trench and oily soil excavation has been  added. Please note that the stormwater detention area is labeled on  Figure 2.  TOC Ogden City This map scale is not sufficient to adequately see the proposed samples on Recycled  Earth's site. Agree to add a revised figure. TOC Ogden City I recommend to include a MW at this location (south of Maintenance Building) since the  CONF‐SS indicated elevated levels of Petroleum Hydrocarbons. Agree to add a second well on east side of property at south end of  Maintenance Building. 1.0 Ogden City Reference to sampling and remedial actions only at the Site is incorrect. The NOV Order  of Compliance item 6 states, "At a minimum, the plan must include cleanup and  remediation of all downstream portions of the City storm conveyance system from  Recycled Earth’s property line to Ogden City limits. The storm conveyance system  includes, but is not limited to, storm pipes, basins, junction structures, detention ponds,  and channels." Tetra Tech revised this statement to reflect the content of the NOV.  Further decisions on additional remedial actions at the Site and the  downstream MS4 conveyance system will depend on the results of the site  characterization. 2.1 Ogden City Property is 3025 S 1500 W, OGDEN Revised 2.1 Ogden City French drain should be defined in the report as a trench filled with gravel or rock  containing a perforated pipe that is redirecting surface water and ground water off site. Revised to add description of the french (or land) drain system constructed  by Recycled Earth. 2.1 Ogden City The French drain described was not permitted by the City. David Rawson stated that the  perforated piping was installed in 2016. This was not disclosed to nor permitted by the  City, which makes this perforated pipe connection an illicit connection. The discharge of uncontaminated groundwater to a storm water system is  allowed under the storm water regulations as explained in the new SWPPP  (Section 1.11), and this was the condition when the drain was first  installed, and the “illicit discharge” did not occur until BSI unloaded its  wastewater at the Site. The connection between the groundwater drain  and storm water system will be temporarily cut off until the groundwater  is proven to be free of contaminants above allowable discharge limits. Any connections that were done without City approval are not permitted.  This pipe was installed in violation of the approved site plan. Recycled Earth will obtain a permit for the french drain  connection prior to reconnecting the drain after  remediation is complete.  Section No.Commentor Comment Tetra Tech Response Ogden City Follow‐Up Comment Tetra Tech Response 2.2 Ogden City Please specify which landfill and provide evidence including, but not limited to, receipts,  documents, etc. The name of the landfill has been added; however, receipts or other  documentation for disposal are not available nor commonly maintained  for general solid waste management. It was under our assumption that these items would need to have  documentation. It is our opinion that if documentation can be found, it  would be beneficial to Recycled Earth. Tetra Tech discussed this comment with H. Wadman on  12/13/2022. The excavated soil was combined with other  municipal wastes in 40‐ton haul truck loads; therefore,  volumes and weights for the excavated soils are  unavailable.  2.2 Ogden City During an inspection on 09/26 with UDEQ WMRC, David Rawson described to us that he  had been accepting concrete washwater since 2016. According to the EPA, concrete  washout water (or washwater) is a slurry containing toxic metals. It’s also caustic and  corrosive, having a pH near 12. Concrete washwater has not been accounted for in this  report nor the liquid waste documentation provided by David Rawson. Concrete washwater has been added to the Site Description (Section 2.1)  as requested, and the planned site characterization activities presented in  the plan will assess whether these  activities have negatively impacted the  soil, groundwater and/or surface water. The revision made does not seem to clarify the response made by Mr.  Rawson. See prior comment. Section 2.2 has been revised to include acceptance of  concrete washwater as part of the Site history.  2.2 Ogden City Please indicate any additional efforts which have occurred from David Rawson or  representatives of David Rawson at all downstream locations. Revised to include this information Is this complete? It doesn't appear that Ogden City's comment was  addressed. Text has been added to Section 2.2 to describe additional  control efforts at downstream locations.  2.2 Ogden City Please provide all documents associated with this "agreement". This request is being addressed by Recycled Earth and its Counsel and is  not part of this Plan. The agreement is referenced without any additional information regarding  the agreement. With this being referenced, how can we correlate this in  the report if we cannot understand what the agreement is? This section has been revised to reference Recycled Earth's  lawsuit against Beck's Sanitation Inc., rather than the  previously referenced Agreement. The lawsuit case  number is provided in the Historical Releases section (2.2).  2.2 Ogden City While the location of offloading the liquid waste may have been adjusted in August 2022,  the perforated pipe french drain system extends to the south end of the property below  the concrete pile. Therefore, any liquid placed on top of the concrete pile could have  seeped down to the french drain as well. Tetra Tech understands this is possible and the Site Characterization Plan  includes sampling/analysis to evaluate the soils and groundwater  throughout this area. 2.2 Ogden City Is all of this correct? Confirmed with Recycled Earth that Ogden City plugged the stormwater  culvert crossing on August 18th.  2.2 Ogden City What are the other locations? Text added to indicate where absorbent booms and pads were placed on  Site.  2.2 Ogden City Is this correct? Yes – confirmed with Recycled Earth 2.2 Ogden City Please specify which landfill and provide documents. The name of the landfill has been added; however, receipts or other  documentation for disposal are not available nor commonly maintained  for general solid waste management. It was under our assumption that these items would need to have  documentation. It is our opinion that if documentation can be found, it  would be beneficial to Recycled Earth. Tetra Tech discussed with H. Wadman on 12/13/2022. The  excavated soil was mixed in with other municipal wastes in  40‐ton haul truck loads; therefore, volumes and weights  for the excavated soils are unavailable.  2.3.1 Ogden City Based on the results, the petroleum hydrocarbons were very high levels. This comment reflects OC’s opinion and does not require a response or  revision to the Plan. 2.3.1 Ogden City 3 & 4‐Methylphenol also appeared in a water sample taken on 08/19 near the Wilson  Canal crossing as well as a soil sample taken on 08/18 in the open ditch north of  Automated Structures. Clarifying language has been added to acknowledge that this constituent  was observed at multiple locations.  2.3.1 Ogden City We are still unsure what was released. Were all constituents that may have potentially  been present tested for in these samples? Clarifying language was added to reflect the original intent, i.e., that no  other “analyzed” parameters were detected. 2.3.1 Ogden City Pages 246‐263 seem to show similar peaks. Can you please provide further explanation  of the analysis and your determination. Clarifying language was added to explain the source of the similar peaks,  which are laboratory standards and surrogates added by the laboratory.  2.3.2 Ogden City I noticed that there was a significant decrease in Oil and Grease levels from samples  taken in the same or similar locations at the end of August to the end of September.  What happened to all the oil and grease in the water/soil? Why is it reducing so much in  concentration over time? A soil sample from the trench at back of RE property had 46,822 mg/kg TRPH on 08/26,  but only had 3916 mg/kg on 09/27. Reduced by almost 12x. Have remedial actions begun on site already? No remedial action has been performed; however, it would not be unusual  for hydrocarbon concentrations to begin decreasing through natural  biological processes and dilution based on weather conditions. It is also  possible that soil samples collected from slightly different locations may  show different results. 2.3.2 Ogden City Trench‐SW had 0.46 mg/L arsenic. Is this within range of typical levels in water samples? Arsenic levels on Site seemed to be higher than offsite. Is this a concern?  Tetra Tech will examine all arsenic data as part of the site characterization  and reporting process. Did this comment get resolved? Please double check that UDEQ  Groundwater Quality Standards are accurate from table to table. For  example Table 1 states a 0.5 mg/L arsenic level while Table 2 states a 0.05  mg/L level. Table 1 has been updated to show the UDEQ Groundwater  Screening level for arsenic equal to 0.05 mg/L. 2.3.3 Ogden City The majority of these samples were actually collected by UDEQ. Ogden only contracted  EnviroCare to collect the sample on 8/19. Ogden also supplied all Sonde data. The text and table have been revised to clarify the origin of these samples. While the “Collected By” column in the table has been fixed, the report still  states that, “Ogden City collected eleven surface water samples and one  soil sample during August 2022, and UDEQ collected two surface water  samples in September 2022” which is incorrect.  Per the prior comments, August 19, 2022 is the only sample that Ogden  employed EnviroCare to collect. The rest of the samples were collected by  UDEQ. The text has been revised to clarify the origin of these  samples. 2.3.3 Ogden City It may be appropriate to use EPA Industrial ISLs on site at Recycled Earth, however, at  downstream locations, I believe it is more appropriate to use residential ISLs since there  are residential areas downstream. Based on aerial imagery, the only residential property is downstream of  Wilson Canal on 2st Street approximately 1.5 miles from the Recycled  Earth facility. The conveyance path is located in a ditch to the west of a  trailer park at this location. Residential standards may be applicable for  comparison to constituents detected in this area. There are plenty of residential dwellings downstream. Our comment  remains the same. For reference: 1600 W 2550 S 1566 W 2550 S 1320 W 2550 S 1394 W 2100 S St 162 W 2100 S St 1630 W 2000 S, West Haven 1708 W 1930 S, West Haven None of the listed addresses are immediately adjacent to  the MS4 conveyance path except for the last two  addresses which are located outside of the Ogden City  Limits. Per the NOV, downstream sampling will be  conducted from Recycled Earth's property line to Ogden  City limits. Evaluation of the investigation results will be  performed based on the actual exposure scenarios  consistent with UDEQ requirements. 2.4 Ogden City I believe the ISLs are intended to be used to assess data collected from locations directly  adjacent to leaking storage tanks. If so, any readings that are close to or above ISLs in  locations over a mile downstream would be concerning. Wilson Canal had readings that  were 3.2x the UDEQ ISLs for soil but as much as 183x for water from Clean Harbors  samples. Tetra Tech will consider all data and applicable or relevant and appropriate  regulatory levels for potential use to evaluate the investigation results. We agree that all data and applicable, relevant, appropriate regulatory  levels should be properly represented. Acknowledged. Section No.Commentor Comment Tetra Tech Response Ogden City Follow‐Up Comment Tetra Tech Response 3.1 Ogden City All appropriate permits must obtained and city inspectors be deployed for observation  and oversight. All work will be performed under required permits and Ogden City will be  informed when remediation and investigation work are scheduled to be  performed. Tetra Tech does not believe revision is needed for the plan in  response to this comment. 3.2 Ogden City Any contaminated materials removed for the site shall be documented. Volumes of  materials, name and location of waste management facility, and receipts of delivery may  be requested at a later date. The plan has been revised to specify these requirements in new Section 3.6  below for all remediation activities. 3.3 Ogden City 1/2 water samples taken by DEQ on 08/18 on site exceeded UDEQ ISLs. 1/1 water sample taken by DEQ on 08/25 exceeded UDEQ ISLs by 1600x. 2/2 water samples taken by DEQ on 09/26 exceeded UDEQ ISLs. (one of these samples  was from the west property pond) 1/1 water samples taken by Clean Harbors on 08/27 on site exceeded UDEQ ISLs.  2/2 water samples taken by Tetra Tech on 09/27 on site exceeded UDEQ ISLs. There has been a total of eight water samples taken on site since 08/18. Seven of the  eight samples exceeded UDEQ ISLs. Is this not a concern? The ISLs are conservatively used to determine whether further  characterization and/or remediation are required for a potentially  impacted site; and they can be used as conservative cleanup targets, but  they are not discharge limits governing storm water discharges from the  Site. However, we note that none of the September water samples  collected from the northern portion of Recycled Earth exceeded ISLs, and  recent samples from the detention basin showed lower detections than  those observed in August 2022. The stormwater criteria presented in this  section are the applicable or relevant and appropriate requirements for  discharge. Furthermore, Ogden City will be invited to inspect the water  and provide field measurement testing during the controlled release of the  detained stormwater.   Which samples from September are you referring to? RES1 & RES2 (09/26)  exceeded UDEQ ISLs for Diesel Range Organics and RES2 also exceeded in  TRPH. RES1 exceeded UDEQ groundwater quality standards in Arsenic.  Also INLET‐SW taken by your team on 09/27 exceeded levels for arsenic  and Diesel Range Organics. Finally, as noted in the previous comment and in the letter issued on  November 22, sample “RES‐1” was collected from the pond on the site at  property address 3027 Midland Drive or the Northwest Property. Please  specify what additional sampling or remedial actions will be complete at  the Northwest Property in the next revision. UDEQ requested ISLs be removed from the Plan and not  be used for future comparisons of investigation results.  The Northwest Pond is being addressed outside of the Plan  and a separate document has been prepared in response  to Ogden's request for a plan to address the Northwest  Pond. This effort will be performed in cooperation with  Ogden City  upon agreement on the approach. 3.3 Ogden City In reviewing the UDEQ Explanation of Standard Industry Classification (SIC) Codes (linked  below for convenience) and the various sector industry types, I do not believe that  Sector N for Scrap Recycling and Waste Recycling Facilities and Sector D for Asphalt  Paving, Roofing Materials, and Lubricant Manufacturing Facilities should be applied  solely since Recycled Earth has been receiving unauthorized and unknown liquid waste  which is not covered under the operations for sector N or D and it is still unclear exactly  what contaminants may be present. Tetra Tech believes the combined requirements for Sectors N and D are  adequate for monitoring the release of Stormwater based on the Site  operations, history and data collected from the Site. Ogden City may  suggest alternative sectors for consideration, but otherwise we believe the  parameters listed will meet the regulatory requirements and sound  practices for stormwater protection. Refer to letter issued on November 22. Effluent limitations required for  release can be seen in the  General Permit  for Treated Groundwater and Surface Water (Permit Number UTG790000).  Any effluent released must also meet the Sector N requirements in  accordance with the facility MSGP. Sector D is not applicable to this site as it is not an asphalt paving, roofing  materials, or a lubricant manufacturing facility. Section 3.3 has been updated to state that detained water  is being addressed through separate correspondence  between Recycled Earth, Ogden City and UDEQ. This effort  will be performed in cooperation with Ogden City  upon  agreement on the approach. 3.3 Ogden City Please identify what hardness value is being used for the Weber River and the source of  the information. Tetra Tech obtained hardness data from Christine Osborne from the UDEQ  Water Quality Division. Hardness was calculated from Ca and Mg as CaCO3  equivalent and was equal to 360 mg/L. This information has been added to  the plan. 3.3 Ogden City If water is approved for release, please indicate the proposed flow rate at which it is  recommended to release the water and an estimate of how long it will take for the water  to drain from the site completely. Additional information regarding the rate of planned release and  controlling factors has been included in the plan. 3.4 Ogden City Storm piping on site shall also be cleaned. In addition and prior to catch basin cleaning,  all storm system components (piping and basins) shall be videoed to inspect for integrity  of joints and presence of oil coating. Videos shall be submitted to the City with a report,  letter, map or other means to describe the findings and provide pipe reference location  details for each video. Describe corrective actions if any issues are identified. Video inspection must also include storm water basins and line that exist south of the  maintenance building.   The requested pipe cleaning and video inspection of the entire storm drain  system appears to be excessive at this time without first enabling the  release of water, sediment cleanout from the catch basin traps and  inspection of this infrastructure and the materials removed. Consideration  of supplemental inspections and remediation may be recommended  depending on the results from the preliminary remedial actions and Site  characterization results.  We agree that it would be difficult to complete until wastewater on site is  addressed. This comment can be addressed after wastewater is handled in  accordance with the November 22nd letter. Acknowledged. 3.4 Ogden City Piping which connects the catch basins should be jet cleaned as well. Same as above response. 3.4 Ogden City Documentation may be requested for waste removed from site. Agreed as presented in the new Section 3.6 – Management of Remediation  Materials 3.5 Ogden City Please indicate any other analysis that will be performed on the soil samples. If the  proposal is to only analyze for TRPH, please provide justification on why other potential  pollutants are not a concern.TPH‐DRO was also reported in confirmaƟon sample CONF‐ SS and should be added to the analyte list.   Only TRPH is proposed for this area following supplemental excavation and  soil removal from this area because the preliminary sample collected by  Tetra Tech was analyzed for a broad range of environmental constituents  and was observed to exceed only the TRPH ISL. We further note that TPH‐ DRO is included in TRPH, which is a sum of DRO, GRO, and ORO.  Confirmation soil samples are collected as “grab” samples not composite.   Please specify that floor confirmation and sidewall confirmation samples  will be collected. If Utah ISLs for TRPH are used, then EPA Method 1664 (a gravimetric  method) is needed for analyzation. The total petroleum hydrocarbon as  diesel range organics (TPH‐DRO) is a gas chromatography EPA Method  8015. This method number (8015) was used by Pace Laboratories for the  TetraTech analysis and the fractions were broken out as C10‐C‐28 Diesel  range, C28‐C40 oil range and TPH (GC/FID) low fraction which is gasoline  range.  Adding the DRO fraction to the ORO fractions to get TRPH is not  done in Utah. If the TRPH ISL is to be used, the samples need to be  analyzed by Method 1664. If Method 1664 is used, we still want the TPH‐ DRO by Method 8015 as described in their plan. The Plan has been modified to specify grab samples only.  Per the UDEQ comments, TPH will be analyzed instead of  TRPH and Utah ISLs will not be used as comparison  criteria.   Per the UDEQ comments, the verification sampling  analysis will include VOCs to represent the TPH GRO by  Method 8260 and SVOC analysis to represent the TPH DRO  by Method 8270. 4.1 Ogden City Please clarify the invert depth of the perforated pipe as well as the ground water table  depth. Soil samples will be required at both the invert of pipe and the soil/groundwater  interface. Soil samples will be collected from the soil/groundwater interface where  oily water may have left a residue. However, since the pipe invert depth is  below the water table soil samples will not be collected from this depth  per industry best practice.  4.1 Ogden City Soil samples will be required as indicated in the NOV and above comment. Water  samples may be appropriate as well. Tetra Tech will collect soil samples from the soil‐groundwater interface.  4.1 Ogden City The water storage tank shall still be sampled per the original request. Please see clarifying language explaining why the storage tank will not be  sampled.  We commented on this because it wasn't clear to us the purpose of the  tank as a source of dust mitigation when it seemed that other liquids were  being accepted for dust mitigation. This can be addressed outside of the  report. Acknowledged. Section No.Commentor Comment Tetra Tech Response Ogden City Follow‐Up Comment Tetra Tech Response 4.1 Ogden City The soil present in the bottom of each inlet box shall still be tested per the original  request. As described in new Section 3.6 – Sediment removed from the catch basins  will be temporarily staged on plastic prior to disposal to enable sampling  to meet solid waste landfill disposal requirements; however, because  these are remediation soils destined for landfilling, the list of parameters  to be analyzed will be as presented in Section 3.6. Please refer to the letter issued on November 23rd. Since Recycled Earth  cannot provide further information on the liquid waste it was accepting at  its facility, the City is obligated to act as conservatively as possible in  ordering additional sampling and remedial actions. The exact substance  that was discharged to the Ogden City storm system is still unknown and  under investigation. Therefore, soil present in the bottom of each inlet box  shall still be tested in accordance with the procedures listed in 4.1 and will  be analyzed for the same parameters utilized in other sampling. We have added sediment samples from all on‐Site catch  basins to Section 3.4.  4.1 Ogden City Figure 7 shows monitoring well locations, not soil sample locations. Figure 6 shows  sample locations, but I would like to see another figure that zooms into the Recycled  Earth site to better understand where the sampling is proposed on site. Agreed – a new figure will be prepared to improve visibility of the on‐site  sample locations. 4.1 Ogden City Please identify any intended adjustments to the existing concrete pile. Since the concrete  pile may have also been contaminated, I believe any excavation or adjustments to the  material in the pile should be included in this report. How can we verify that any  concrete processed or removed from that pile will not contaminate other locations? Adjustments to the sample locations and possible relocation of broken  cement will be described in the Site Characterization Report that presents  the investigation procedures and results. It is unclear what was meant in this response. Where were the revised  changes in this plan? I didn't see it. Clarifying language has been added to Section 4.1  describing adjustments to the cement pile to allow for  sample collection.  4.1 Ogden City Per the Ogden City NOV, an Ogden representative shall be present for all sample  collection described in this report. Recycled Earth will inform Ogden City of the schedule for Site  characterization, which will be performed during typical working hours;  however, Tetra Tech will conduct the work in an efficient and professional  manner in general accordance with the provided schedule whether or not  City representatives are present. A site characterization and sampling schedule shall be provided to the City  at least 48 hours prior to the first sample date/time. The Plan has been updated to include 48 hour notice to  Ogden City.  4.1 Ogden City Please add total petroleum hydrocarbons as diesel range organics to the analyte list for  soil and groundwater investigation. TRPH includes diesel range organics, and breakouts of GRO, DRO and ORO  will be provided by the laboratory for inclusion in the Site Characterization  Report. If Utah ISLs for TRPH are used, then EPA Method 1664 (a gravimetric  method) is needed for analyzation. The total petroleum hydrocarbon as  diesel range organics (TPH‐DRO) is a gas chromatography EPA Method  8015. This method number (8015) was used by Pace Laboratories for the  TetraTech analysis and the fractions were broken out as C10‐C‐28 Diesel  range, C28‐C40 oil range and TPH (GC/FID) low fraction which is gasoline  range.  Adding the DRO fraction to the ORO fractions to get TRPH is not  done in Utah. If the TRPH ISL is to be used, the samples need to be  analyzed by Method 1664. If Method 1664 is used, we still want the TPH‐ DRO by Method 8015 as described in their plan. The Plan has been modified to specify grab samples only.  Per the UDEQ comments, TPH will be analyzed instead of  TRPH and Utah ISLs will not be used as comparison  criteria.   Per the UDEQ comments, the verification sampling  analysis will include VOCs to represent the TPH GRO by  Method 8260 and SVOC analysis to represent the TPH DRO  by Method 8270. 5.1 Ogden City Add or move a monitoring well to an area hydraulically downgradient of the excavation  area near the maintenance building. Agreed – another well will be installed at the requested location, as shown  in the revised plan.  5.2 Ogden City Please add total petroleum hydrocarbons as diesel range organics to the analyte list for  soil and groundwater investigation at the French drain and for the analysis of  groundwater samples from the monitoring wells. TRPH includes diesel range organics, and breakouts of GRO, DRO and ORO  will be provided by the laboratory for inclusion in the Site Characterization  Report. If Utah ISLs for TRPH are used, then EPA Method 1664 (a gravimetric  method) is needed for analyzation. The total petroleum hydrocarbon as  diesel range organics (TPH‐DRO) is a gas chromatography EPA Method  8015. This method number (8015) was used by Pace Laboratories for the  TetraTech analysis and the fractions were broken out as C10‐C‐28 Diesel  range, C28‐C40 oil range and TPH (GC/FID) low fraction which is gasoline  range.  Adding the DRO fraction to the ORO fractions to get TRPH is not  done in Utah. If the TRPH ISL is to be used, the samples need to be  analyzed by Method 1664. If Method 1664 is used, we still want the TPH‐ DRO by Method 8015 as described in their plan. The Plan has been modified to specify grab samples only.  Per the UDEQ comments, TPH will be analyzed instead of  TRPH and Utah ISLs will not be used as comparison  criteria.   Per the UDEQ comments, the verification sampling  analysis will include VOCs to represent the TPH GRO by  Method 8260 and SVOC analysis to represent the TPH DRO  by Method 8270.     RESPONSES TO UDEQ‐DWMRC COMMENTS  Site Characterization Plan for  Recycled Earth South Operations  Prepared by Tetra Tech, Inc.  December 29, 2022    The comments provided by the Utah Department of Environmental Quality, Division of Waste Management  and Radiation Control (UDEQ‐DWMRC) dated December 5, 2022 are copied below with responses to the  comments prepared by Tetra Tech in blue font. These responses are provided to accompany the revised Site  Characterization Plan to be concurrently re‐submitted to the agency.    1. Section 1.0 Introduction   The August 26, 2022 Request for Voluntary Action does not only ask for the investigation of potentially  contaminated materials on the Site, as stated in the introduction. It also requests investigation of  “potential contamination identified in connection with the disposal of unauthorized solid wastes,”  including “long‐term monitoring of groundwater conditions in potentially impacted areas.” This means  that any contamination resulting from wastes received at Recycled Earth, including off‐site  contamination, requires investigation  Tt Response: The Introduction has been revised to include the information requested above.     2. Section 2.2 Historical Releases   The Division requests documentation between Recycled Earth and any provider of liquid waste or semi‐ liquid waste, disposed of on the Site from January 1, 2018 through November 30, 2022. Because  adequate cleanup is dependent on accurate waste characterization, please provide characterizations of  liquid waste brought to the Site. Documentation should include all available information, such as, but  not limited to agreements, receipts, description of wastes, weights, volumes, and description of waste  offload/dumping area.   Tt Response: Recycled Earth has provided all requested documentation in its possession and control to  the Division and Ogden City.     Trenchless excavation waste is not rainwater. Revise all instances of incorrectly labeled wastes.  Trenchless excavation waste may qualify as wastewater or slurry; water contaminated with petroleum  products (gasoline and diesel) is petroleum contaminated water; grease trap waste is grease trap waste;  concrete truck washout is concrete truck washout; etc.  Tt Response: Section 2.2 has been revised to change the previous general references to “water” to read  “liquids” to account for the variety of liquids (including wastewater) that may have been released at the  Site.     3. Section 2.3 Previous Characterization   For future soil and water analysis, please note that the Division does not recognize the use of the  Division of Environmental Response and Remediation (DERR) Initial Screening Levels (ISL) for soil and  groundwater. In lieu of that, the acceptable screening standards for all media of concern will be the US      EPA Regional Screening Level, (EPA RSLs). The Division requires that any references to DERR ISLs be  changed to EPA RSLs. Additionally, total recoverable petroleum hydrocarbon (TRPH) analysis conveys  little or no information regarding risk since there is no standard toxicological data available. Please  change all instances of TRPH analysis to TPH analysis.   Tt Response: Section 2.3 and the related  tables have been revised to include EPA RSLs and remove  DERR ISLs. All instances of TRPH have been changed to TPH.     We have also added EPA industrial soils RSLs for TPH GRO, TPH DRO and TPH ORO. We note that RSLs  for these categories are presented on EPA’s table as TPH aliphatic and aromatic high, low, and medium  fractions, respectively, based on carbon fractions. The lower RSL of the aliphatic and aromatic ranges  were used on the tables for conservative comparisons because the laboratory does not differentiate  between aliphatic and aromatic hydrocarbons.      In analyzing for metals, when chromium is detected in the sample, analysis of chromium six (Cr VI) must  be performed unless it can be demonstrated that total chromium is predominantly Cr III. As you may be  aware the toxicity of chromium is dependent on the valence state. Alternatively, if you chose to not test  for Cr VI specifically, you may conservatively assume for evaluation and remediation efforts that total  chromium results are Cr VI.   Tt Response: We have added Cr VI to the list of surface media characterization analytes to be performed  for further characterization, as listed in Section 4.1. Please note that method 3500CR C‐2011 will be  used for water samples to extend the hold time to 28 days.     The Division does not accept any literature‐cited background values for inorganic contaminants. It is  recognized that arsenic background (As BG) concentrations in Utah vary widely and could be several  orders of magnitude greater than the EPA RSL Table values. Thus, for the assessment of As  contamination at a site, the Division requires a site‐specific As BG to be determined. However, a site‐ specific arsenic value determined for a nearby site, with a radius no greater than 5 miles may be  assumed, provided the site‐specific data is based on acceptable methodology. Absent such information  and a lack of a site‐specific arsenic value, the RSL arsenic values become the default screening values.  Tt Response: Section 2.3 has been revised to include the established background level for arsenic at 15  mg/kg for a nearby Voluntary Cleanup Program site, Ogden Business Exchange, which is located  approximately two miles from the Recycle Earth facility.     The Division requests congener PCB testing rather than aroclor PCB testing. Aroclor PCB testing may not  capture soil contamination due to degradation, weathering, and denaturation over time.   Tt Response: We have revised the PCB analyses to be for PCB congeners for surface media  characterization as listed in Section 4.1.    A full semi‐volatile organic compounds (SVOC) analysis should be performed using the selective ion  monitoring (SIM) method due to lower detection levels.  Tt Response: We have revised the plan to include the SIM method requested above. Please note that  our laboratory (Pace) has informed us that SIM is only applicable to PAH compounds, not the full suite of  SVOCs. The full list of SVOCs will be analyzed using 8270 C and the PAH compounds will be analyzed  using 8270‐SIM.         4. Section 3.0 Preliminary Remedial Action  To reiterate, any remedial action should adhere to previous sampling comments as well as Ogden   City requirements. Additional testing should be well documented and follow Standard Operating   Procedures listed in Appendix D, not procedures laid out in plan.  Tt Response: Section 4.1 has been modified to refer to SOPs listed in Appendix D and procedures laid  out in the Plan have been removed.     Composite sampling is not appropriate given the site situation. The Division requires discrete sampling   methodology as the more appropriate sampling methodology.  Tt Response: The Plan has been revised to specify grab samples for future characterization sampling.     The hydrocarbon residues remaining after excavation could be gasoline range organics (GRO) as well as   diesel range organics (DRO). As stated previously, the Division does not accept the DERR ISL   standards in site characterization. The verification sampling analysis should therefore be VOCs to   represent the GRO and SVOC analysis to represent the DRO. As explained above, a full SVOC analysis   should be performed using the SIM method due to lower detection levels.  Tt Response: We have revised the plan to include the methods requested above. Please note that our  laboratory (Pace) has informed us that SIM is only applicable to PAH compounds, not the full suite of  SVOCs. The full list of SVOCs will be analyzed using 8270 C and the PAH compounds will be analyzed  using 8270‐SIM.     5. Section 4.0 Surface Media Characterization Plan ‐ DEQ/DWMRC and Section 5 Subsurface   Characterization Plan  To reiterate, any remedial action should adhere to previous sampling comments as well as Ogden City  comments. Please update the plan to reflect this. The characterization plan incorrectly cites Appendix C  rather than Appendix D for Standard Operating Procedures. The plan must be updated   to exclusively follow Standard Operating Procedures as laid out in Appendix D.   Tt Response: We have corrected references to appendices throughout the Plan.     The Division requests that sampling and investigation of the quantity, nature, and extent of potentially   contaminated materials occur WITHIN the concrete piles, as requested on August 26th and   September 27th. Soil and groundwater beneath the concrete pile should be sampled to fully investigate   potential contamination. Concrete may potentially be contaminated and thus should be tested before   removal. Additionally, the Division requests that Recycled Earth halt any sale of crushed concrete until   concrete contamination can be determined to prevent the sale of potentially contaminated material.  Tt Response: We have added four concrete samples to Section 4.1; three from the unprocessed  concrete pile and one from the crushed concrete material piles. Additional soil and groundwater  samples from below the concrete pile will be addressed by samples from the french drain (i.e., FD‐1  through FD‐3).     Recycled Earth has halted the sale of crushed concrete per the Division’s request until verification that  concrete is not impacted.        If any materials are found to be characterized as hazardous waste, LDR analysis must be done. Further  action may need to be taken.  Tt Response: We have added requirements for hazardous waste characterization (as applicable) to  Section 4.1.     Previous soil analysis included PCBs. Continued PCB analysis is needed, following above comments.  Additionally, SVOC analysis by Method 8270 must be revised to Method 8270 ‐ SIM. This method is  capable of quantitating PAHs to very low detection limits consistent with the EPA RSL values.  Tt Response: We have revised the Plan to include the methods requested above.     In situations where multiple chemicals are detected in the verification samples of the medium, a point‐ by‐point comparison to the RSL values will not be sufficient to conclude that the remediation has been  completed. The appropriate approach to determine whether remediation is complete will be to evaluate  if residual contaminants left in place are at acceptable risk levels. An additive response should be  addressed if issues are detected. If all residual contaminants are flagged as non‐detect after verification,  this extra exercise will not be required. Please provide a procedure for making such a determination that  residual contaminants if present pose acceptable risk to human health and the environment.  Tt Response: We have added procedures for residual contamination to Sections 4.1. We will continue to  use RSLs for initial screening purposes and conduct a quantitative risk assessment if warranted.      If residual contaminants are present after completion of remediation, please address contaminant  migration to groundwater basing your evaluation of the EPA RSL soil screening levels (SSLs) for  protection of groundwater. A dilution attenuation factor of twenty (DAF‐20) may be applied.  Tt Response: We have included procedures to address potential contaminant migration to groundwater  to Section 4.1.    Please address impacts of contaminant releases on the environment, i.e., is the ecology of the site  affected by on‐site activities?  Tt Response: We have included text in Section 4.1 describing consideration for potential impacts to  ecological species based on the presence or absence of potential ecological receptors, exposure  pathways, and constituents of concern in site characterization samples.     Standard Operating Procedure 030 Groundwater Monitoring Well Installation subsection 2.2.3 Hollow‐ stem auger drilling states that Hollow‐stem auger (HSA) drilling techniques will be used for installation  of the groundwater monitoring wells. This is a contradiction to the proposed methodology outlined in  the main body of the work plan which requests the use of an excavator due to the relatively shallow  depth to groundwater. According to section 2.2.1 Rationale of SOP 030, “Sound groundwater sample  integrity is dependent primarily on strict adherence to properly conceived monitor well construction and  development procedures.” The Division does not have confidence that the use of excavators operated  by Recycled Earth staff, even under the direction of TetraTech, meets the objectives listed in SOP 030.  Please update the Work Plan and SOP 030 for clarity and consistency.  Tt Response: Section 5.2 has been revised to require hollow‐stem auger drilling techniques for well  installation.         The site maps provided do not show the groundwater flow direction and therefore it is unknown if the   proposed groundwater monitoring wells represent downgradient conditions. In subsection 2.1 Site   Description, dewatering activities via French drains are mentioned which may alter the potentiometric   surface. Provide justification notating both upgradient and downgradient locations for groundwater   monitoring wells. Further wells may be necessary based on data collected. Once wells are drilled,   provide groundwater elevations with future reports.  Tt Response: Clarifying text has been added to Section 5.1 describing rationale for groundwater flow  direction to the north and plans to interpret actual flow directions once the wells are installed. We have  also added text to Section 6.0 describing reporting requirements for groundwater elevations.     Again, the Division does not accept the DERR ISL standards for site characterization activities. This   includes groundwater samples. For groundwater, the accepted standards will be the US EPA RSL Table   and standards identified by UAC R315‐308‐8.  Tt Response: We have updated Section 5.4 to specify comparison of groundwater sample results to RSLs  and the Utah Groundwater Protection Standards specified in UAC R315‐308‐4. Please note that UAC  R315‐308‐8 does not appear to exist; we assume the intended table is the one listed under UAC R315‐ 308‐4: “Constituents for Detection Monitoring.”     6. Section 6.0 Reporting Requirements  The Division requires approval of the work plan by both Ogden City and the Division before   implementation. The Site Characterization Work Plan should be updated with the preceding comments,   as well as Ogden City requests, and reapproved by the Division and Ogden City before action is taken.   Additionally, the Division requests that site characterization be updated and sent for reapproval no later   than December 9th, 2022.  Tt Response: Sections 6.0 and 7.0 have been revised to reflect Site Characterization Plan approval from  both the UDEQ and Ogden City before beginning the work. As per Dentons correspondence with the  Division, the revised plan will be submitted for reapproval no later than December 30, 2022.    Samples that require minimal preparation should be completed no later than two weeks after approval  of the revised Site Characterization Plan.  Tt Response: Section 7.0 has been updated to include the two week standard laboratory turnaround  period as noted above.     Samples for groundwater, which require a licensed well driller, and perforated drain samples should be   received as quickly as possible, although the Division recognizes that these samples will take   time to coordinate with licensed professionals. Please include timelines for this sampling in the updated   Site Characterization Work Plan to ensure no further delay in remediation.  Tt Response: Section 7.0 has been updated to reflect revised, anticipated starts for site characterization  activities, including anticipated times for groundwater and french drain sampling.     Site Characterization Plan for Recycled Earth South Operations Project No. 117-9187001 December 29, 2022 PREPARED FOR PRESENTED BY Recycled Earth C/O Tyler R. Cahoon Dentons Durham Jones Pinegar P.C. 111 S. Main St., Ste. 2400 Salt Lake City, UT 84111 (801) 297-1422 tyler.cahoon@dentons.com Tetra Tech, Inc. 4750 West 2100 South Suite 400 Salt Lake City, UT 84120 (801)-736-7451 Fax (801) 364-2021 tetratech.com Prepared by: David S. Wilson, P.E., P.G. Principal Engineer & Project Manager DavidWilson.Wilson@tetratech.com 12/29/2022 Anna Rasmuson, PhD, P.G. Geological Engineer Anna.Rasmuson@tetratech.com 12/29/2022 Site Characterization Plan Recycled Earth Ogden, Utah December 29, 2022 TABLE OF CONTENTS 1.0 INTRODUCTION ................................................................................................................................................. 1 2.0 BACKGROUND .................................................................................................................................................. 2 Site Description ............................................................................................................................................. 2 Historical Releases ....................................................................................................................................... 2 Previous Characterization ............................................................................................................................. 3 2.3.1 Clean Harbors Sample Results ........................................................................................................... 3 2.3.2 Tetra Tech Sample Results ................................................................................................................. 5 2.3.3 Ogden City and UDEQ Sample Results .............................................................................................. 6 Summary of Preliminary Findings ................................................................................................................. 7 3.0 PRELIMINARY REMEDIAL ACTIONS ............................................................................................................... 9 French Drain Cutoff ....................................................................................................................................... 9 South Trench Cleanout ................................................................................................................................. 9 Detained water Release ................................................................................................................................ 9 Catch Basin Cleanout ................................................................................................................................... 9 Excavation near Maintenance Building ....................................................................................................... 10 Management of Remediation Materials ...................................................................................................... 10 4.0 SURFACE MEDIA CHARACTERIZATION PLAN ........................................................................................... 11 Sample Collection ....................................................................................................................................... 11 Quality Assurance ....................................................................................................................................... 12 Field Records .............................................................................................................................................. 12 4.3.1 Field Notes......................................................................................................................................... 12 4.3.2 Sampling Log ..................................................................................................................................... 13 5.0 SUBSURFACE CHARACTERIZATION PLAN ................................................................................................ 14 Monitoring Well Locations ........................................................................................................................... 14 Subsurface Soil Sampling ........................................................................................................................... 14 Groundwater Monitoring Wells .................................................................................................................... 15 Groundwater Sampling ............................................................................................................................... 15 6.0 REPORTING REQUIREMENTS ....................................................................................................................... 16 7.0 SCHEDULE ....................................................................................................................................................... 17 8.0 REFERENCES .................................................................................................................................................. 18 Site Characterization Plan Recycled Earth Ogden, Utah December 29, 2022 LIST OF TABLES Table 1 Clean Harbors Sample Detections Table 2 Tetra Tech Preliminary Sample Detections Table 3 Ogden City Sample Detections LIST OF FIGURES Figure 1 Site Location Map Figure 2 Site Map Figure 3 Previous Excavations Figure 4 Clean Harbors Sample Locations Figure 5 Tetra Tech Preliminary Sample Locations Figure 6 Ogden City Sample Locations Figure 7 Surface Media Characterization Sample Locations Figure 8 On-Site Surface Media Characterization Sample Locations Figure 9 Monitoring Well Locations APPENDICES Appendix A Laboratory Results Appendix B Gas Chromatogram Analysis for Clean Harbors Samples Appendix C Ogden City Sonde Measurements Appendix D Standard Operating Procedures Appendix E Field Forms Site Characterization Plan Recycled Earth Ogden, Utah December 29, 2022 LIST OF ACRONYMS/ABBREVIATIONS Acronyms/Abbreviations Definition COD Chemical Oxygen Demand EPA Environmental Protection Agency GC Gas Chromatogram GC/MS Gas Chromatogram/Mass Spectrometry IDW Investigation Derived Waste LDR Land Disposal Restriction MS4 Ogden City Municipal Storm Sewer System NOV Notice of Violation ORO Oil Range Organics PID Photoionization Detector PPL Priority Pollutant List RSL Regional Screening Level SOP Standard Operating Procedure SVOC Semi-Volatile Organic Compound TDS Total Dissolved Solids TOC Total Organic Carbon TPH Total Petroleum Hydrocarbons UAC Utah Administrative Code UDEQ Utah Department of Environmental Quality VOC Volatile Organic Compound Site Characterization Plan Recycled Earth Ogden, Utah 1 December 29, 2022 1.0 Introduction On behalf of Recycled Earth, Tetra Tech, Inc. (Tetra Tech) has prepared this Site Characterization Plan (Plan) for the Recycled Earth South Operations (Site). This Plan was prepared in response to a Notice of Violation (NOV) and a Request for Voluntary Action issued to Recycled Earth. The NOV was issued by Ogden City Public Services on September 30, 2022 for a purported illicit discharge to the Ogden City Municipal Storm Sewer System (MS4). The NOV states that Recycled Earth prepare a plan describing sampling and remedial actions for impacted areas at the Site and the downstream MS4 conveyance system. The Request for Voluntary Action (Request) was issued by the Utah Department of Environmental Quality (UDEQ), Division of Waste Management and Radiation Control on August 26, 2022. The Request asks Recycled Earth to investigate the quantity, nature, and extent of potentially contaminated materials on the Site and potential contamination identified in connection with the disposal of unauthorized wastes including long-term monitoring of groundwater conditions in potentially impacted areas. The purpose for this Plan is to present historical releases, results from previous site characterization, a plan for further site characterization, and proposed preliminary remedial actions based on the current Site knowledge. This Plan is organized as follows:  Section 1.0: Introduction – Provides the purpose, scope, and organization of the Plan.  Section 2.0: Background – Presents a description of the Site, historical releases, previous characterization work, and a summary of preliminary findings.  Section 3.0: Preliminary Remedial Action – Describes proposed remedial action to be performed concurrent with the additional characterization activities.  Section 4.0: Surface Media Characterization Plan – Describes the scope of field sampling and laboratory analyses required to further characterize surface media.  Section 5.0 Subsurface Characterization Plan – Describes subsurface soil sampling, groundwater well installation, and groundwater monitoring to characterize subsurface media.  Section 6.0 Reporting Requirements – Describes preliminary and final reporting requirements associated with this work.  Section 7.0: Schedule – Provides a schedule of preliminary remedial action and site characterization work.  Section 8.0: References – Provides a list of references included in this report. Site Characterization Plan Recycled Earth Ogden, Utah 2 December 29, 2022 2.0 Background This section describes Site operations, historical releases, previous characterization work, and a summary of preliminary findings. SITE DESCRIPTION The Recycled Earth South Site is located at 3025 S 1500 W in Ogden Utah as shown on Figure 1. The Site covers approximately 11 acres and includes vehicle maintenance, concrete washout and crushing operations, and composting operations as depicted on the Figure 2 Site Map. The vehicle maintenance for Recycled Earth’s vehicles and equipment is performed in a building located on the north end of the Site; the concrete washout and crushing and composting operations occur on the south end of the Site. The Site was constructed in 2015 by Recycled Earth and was developed over prior agricultural lands. The Site was excavated two to four feet below the original land surface and earth berms were established around the perimeter of the Site in order to obscure operations from Midland Drive per Ogden City requirements. During Site development, shallow groundwater was encountered near the native soil surface. Groundwater levels were lowered by installing a trench filled with gravel and a perforated pipe (land or french drain) to redirect shallow groundwater to the stormwater system to lower the groundwater table in the southern portion of the Site. The french drain connects to the southern-most inlet box that collects surface water from the operational areas on the north side of the Site, thus connecting the groundwater dewatering system to the storm water drainage system that eventually discharges to a detention basin located northwest of the Site along Midland Drive. The detention basin is piped to the Ogden City municipal storm water drainage system, which is regulated under the City’s General Municipal Stormwater (MS4) Permit, and eventually discharges to the Weber River approximately two miles north of the Site. HISTORICAL RELEASES Based on correspondence with Mr. David Rawson, the owner and manager of Recycled Earth, minor drips and leaks from equipment have occurred in the past but no significant spills or releases have occurred at the Site. Tetra Tech views these minor drips and leaks from equipment as de mininmis. Recycled Earth periodically excavates soils with visible hydrocarbon staining and properly disposes of them off site at Intermountain Regional Landfill, which is a Class V municipal waste facility. The soil is transported along with other municipal solid waste in 40-ton haul trucks. Excavated areas are backfilled with gravel to the previous grade. As part of Recycled Earth’s concrete recycling operation, the company accepted concrete washout from a variety of customers since beginning operation. The concrete washout was received in various containers and was typically a dry or slurry form when received. The concrete washout was dumped near the base of the concrete pile located on the southern portion of the Site for subsequent crushing when fully cured. Recycled Earth stopped receiving concrete washout in August 2022. Except for the purported release of liquids identified by the City and UDEQ in their respective correspondence as described previously and described in the timeline below, Recycled Earth is unaware of other significant releases on or from the Site. A summary of the timeline relating to the apparent August release was provided by Mr. Rawson and is presented below, including the recent operational history, release history and preliminary mitigation measures:  February 2022 – Recycled Earth began accepting, liquids from trenchless excavation and construction projects in Ogden from Beck’s Sanitation. Beck’s Sanitation represented to Recycled Earth that the liquids would be filtered water from a gravel filtration system before offloading at the Site and that the water could be used for dust control measures associated with Recycled Earth’s concrete crushing operations. Site Characterization Plan Recycled Earth Ogden, Utah 3 December 29, 2022  August 2022 – Recycled Earth began receiving liquids from Beck’s Sanitation trucks at the southern end of the Site near the south end of the french drain system.  August 17, 2022 – The last load of liquid from Beck’s Sanitation was accepted in the morning. Recycled Earth was notified mid-day about an odor coming from the MS4 conveyance system downstream of the Site. Beck’s Sanitation informed the Weber County Health Department that they had disposed of other sources of unfiltered wastewater at the Recycled Earth Site. Beck’s Sanitation’s change to offloading wastewater onto the Site was not disclosed or authorized by Recycled Earth. (See First Amended Complaint, Recycled Earth, LLC v. Beck’s Sanitation, Inc., Case No. 220905020, 2nd Dist. Ct., Weber County, Utah ( alleging Beck’s Sanitation dumped illegal wastewater onto the Site).)  August 18, 2022 – Ogden City plugged the stormwater culvert crossing located at 2550 South Street. A Site visit was conducted by Ogden City and UDEQ to inspect the stormwater conveyance pathway from the Recycled Earth Site.  August 19, 2022 – Clean Harbors placed silt curtains and sorbent booms at the 2550 South Street culvert and Wilson Creek crossing, and Recycled Earth placed oil absorbent booms and pads at the Site (e.g., in catch basins and the outlet to the Stormwater Detention Basin) and downstream at the Wilson Canal crossing. Clean Harbors also collected preliminary soil and water samples. Ogden City removed the culvert plug at the 2550 South Street due to concerns for flooding.  August 20, 2022 – Recycled Earth stopped water from entering the City’s stormwater system and began pumping the on-Site inlet box into a temporary pond to remove potentially impacted groundwater.  August 24: 2022 - Ogden City notified Recycled Earth that, effective immediately, Recycled Earth's access to the City's municipal separate storm sewer system (MS4) was suspended due to the detection of illicit discharge of pollutants or water containing pollutants to the MS4.  September 12, 2022 – Recycled Earth stopped pumping water from the inlet box. The flow to the inlet box has slowed but ponding is still occurring on the Site.  September 30, 2022 - Ogden City issued a Notice of Violation and Order of Compliance with Municipal Code 9-7D to David Rawson and Kay Swan and Recycled Earth for illegal discharges of pollutants and/or liquid containing pollutants to the MS4 from the Recycled Earth property. The Notice of Violation ordered Recycled Earth to, among other things, provide environmental site characterization information and recommendations for actions to remediate the alleged noncompliance. Soil staining near the cement pad on the south side of the Maintenance Building was identified by a UDEQ representative on September 26, 2022, and Recycled Earth immediately excavated visibly affected soil on the same day from the location shown on Figure 3 for removal and off-Site disposal at Intermountain Regional Landfill along with other solid waste. A verification sample was collected by Tetra Tech from the excavation and is described in Section 2.3.2. PREVIOUS CHARACTERIZATION Soon after discovery of the release of wastewater to the storm water conveyance system by Beck’s Sanitation, preliminary inspections and spill mitigation measures were conducted, and preliminary water and soil samples were collected at select locations at the Site and along the conveyance downstream of Recycled Earth. Samples were collected by Clean Harbors and Tetra Tech (retained by Recycled Earth), and by Ogden City and the UDEQ. The sample locations and results from these preliminary samples are presented in this section. 2.3.1 Clean Harbors Sample Results Sampling was conducted by Clean Harbors on August 27, 2022. A total of 4 soil samples and 5 water samples were collected on-Site and downstream locations as shown on Figure 4 and summarized on the table below. Site Characterization Plan Recycled Earth Ogden, Utah 4 December 29, 2022 Sample ID Description Soil #1 Composite soil sample collected from the trench near the french drain. Water #1 Water sample collected from the stormwater inlet box into which the french drain discharges. Water #2 Water sample collected from the stormwater vault at the intersection of Midland Drive and Stock Road. RRC Soil Soil sample collected from the railroad crossing at the culvert at 2550 South Street. RRC Water Water sample collected from the railroad crossing at the culvert at 2550 South Street. WC Soil Soil sample collected from the MS4 outlet on the east side of the Wilson Canal. WC Water Water sample collected from the MS4 outlet on the east side of the Wilson Canal. WC Base Soil Soil sample from the Wilson Canal on the west side of the access road. This sample is intended to serve as a base analysis of the Wilson Canal. WC Base Water Water sample from the Wilson Canal on the west side of the access road. This sample is intended to serve as a base analysis of the Wilson Canal. The soil and water samples were analyzed by Chemtech Ford for the following analyses:  Flashpoint, pH, and Total Solids by Methods 1010, 9045D, and 8000C, respectively  Toxicity Characteristic Leachate Procedure (TCLP) metals by EPA Method 6010B  TCLP Herbicides by Method 8321  TCLP Pesticides by Method 8081A  Polychlorinated Biphenyls (PCBs) by Method 8082  Gasoline Range Organics (GRO) by Method 8260  Diesel Range Organics (DRO) by Method 8015C  Oil Range Organics (ORO) by Method 8015C  TCLP Volatile Organic Compounds (VOCs) by Method 8260D  TCLP Semi-Volatile Organic Compounds (SVOCs) by Method 8270E Constituent detections are summarized on Table 1 and the full laboratory report is included in Appendix A. The results show detections of petroleum hydrocarbons at select locations and non-hazardous levels of select metals by TCLP analysis and one VOC by TCLP analysis (3 & 4-Methylphenol, which is frequently observed as an inadvertent laboratory contaminant was observed at several preliminary locations); other constituents analyzed at the request of Clean Harbors were not detected. The results were compared to TCLP limits, UDEQ Groundwater Quality Standards, and the Environmental Protection Agency (EPA) Industrial Regional Soil Screening Levels (RSLs) for industrial soils, as applicable for the various media and parameters analyzed by Clean Harbors. RSLs for TPH GRO, TPH DRO, and TPH ORO were correlated with the RSLs for TPH aliphatic and aromatic high, low, and medium fractions, respectively, based on carbon fractions. The lower of the two RSL values (aliphatic and aromatic) was used for conservative comparison purposes. Samples Soil #1 and WC Soil exceeded the RSL for DRO. All other parameters were below detection limits or below the Groundwater Quality Standards and RSLs. Gas Chromatogram (GC) and Gas Chromatogram/Mass Spectrometry (GC/MS) charts were obtained from the laboratory and used by Tetra Tech to compare on- and off-Site GC and GC/MS fingerprints for petroleum hydrocarbon compounds. Based on the preliminary analysis of these data, the major naturally occurring peaks present in off-Site samples were not identified in on-Site samples and major naturally occurring peaks in on-Site samples were not identified in off-Site samples. It is noted that the highest peaks shown on the chromatograms are internal standards and surrogates used by the laboratory for calibration purposes, and they do not reflect naturally occurring constituents in the samples. Peaks for ethanol, isopropyl alcohol, and acetone were observed Site Characterization Plan Recycled Earth Ogden, Utah 5 December 29, 2022 in several off-site samples; however, these are common laboratory contaminants and are not likely associated with the purported release. The review of these preliminary results suggest that the petroleum hydrocarbons identified on-Site likely do not come from the same source as the hydrocarbons identified downstream and off- Site. Tetra Tech’s preliminary analysis of the GC and GC/MS charts is included in Appendix B and further assessment will be performed as part of the further site characterization activities. 2.3.2 Tetra Tech Sample Results Tetra Tech inspected the Site and collected four soil samples and two surface water samples on September 27, 2022. The sample locations are shown on Figure 5 and described on the table below: Sample ID Description TRENCH-SS Composite soil sample collected from the south trench near the south end of the french drain. TRENCH-SW Water sample collected from the south trench near the south end of the french drain. BLAST-SS Composite soil sample collected from sand blasting material in soil stockpile. CONC-SS Composite soil sample collected from concrete crushing soil stockpile. INLET-SW Water sample collected from surface of stormwater inlet box. POND-SS Grab soil sample collected from ponded area in center of Site where water had collected after the storm drains were plugged. CONF-SS Post-excavation verification sample from excavated area at the south side of the Maintenance Building. During the Site inspection, Tetra Tech representatives observed visible petroleum hydrocarbons in the surface water and soils at the trench excavation at the south end of the concrete pile near the south end of the french drain. This is the reported area where Beck’s Sanitation offloaded the wastewater during August 2022. The samples collected were analyzed by Pace Analytical (Pace) for the following parameters:  Priority Pollutant List (PPL) Metals by Methods 6010B and 7471A  TPH GRO by Method 8015D/GRO  TPH DRO by Method 8015  TPH ORO by Method 8015  VOCs by Method 8260B  SVOCs by Method 8270C Constituent detections are summarized on Table 2 and the full laboratory report is included in Appendix A. The results show detections of petroleum hydrocarbons at all sample locations and non-hazardous levels of select metals, VOCs, and SVOCs. The results were compared to the UDEQ Groundwater Quality Standards and EPA RSLs for industrial soils. RSLs for TPH GRO, TPH DRO, and TPH ORO were correlated with the RSLs for TPH aliphatic and aromatic high, low, and medium fractions, respectively, based on carbon fractions. The lower of the two value was used for conservative comparisons. TRENCH-SS, BLAST-SS, CONC-SS, and CONF-SS exceeded the EPA RSLs for arsenic; however, detections for arsenic were below the background concentration of 15 mg/kg established for the Ogden Business Exchange Voluntary Cleanup Program site which is located approximately two miles from the Site (Amec Foster Wheeler, 2014) except for sample BLAST-SS). The two water samples, TRENCH-SS and INLET-SW exceeded the UDEQ Groundwater Quality Standard for arsenic and TRENCH-SW exceeded the standard for antimony. Soil samples TRENCH-SS, BLAST-SS, CONC-SS, and CONF-SS exceeded the RSL for arsenic and samples TRENCH-SS and CONF-SS exceeded the RSL for TPH DRO. All other parameters were below detection limits or below the Groundwater Quality Standards and RSLs. Site Characterization Plan Recycled Earth Ogden, Utah 6 December 29, 2022 2.3.3 Ogden City and UDEQ Sample Results Ogden City collected one surface water sample in August 2022, and UDEQ collected one surface water and one soil sample during August 2022, and ten surface water samples in September 2022. Split samples from the two water samples collected by UDEQ in September were shared with Recycled Earth and analyzed by Tetra Tech. The sample locations are shown on Figure 6 and described on the table below: Sample ID Sample Date Collected By Description RE Inlet August 18, 2022 UDEQ Water sample collected from stormwater inlet box at Recycled Earth south Site. RE Storm August 18, 2022 UDEQ Water sample collected near stormwater outlet to MS4 outlet at north end of stormwater detention basin at Recycled Earth south Site. AS Stream August 18, 2022 UDEQ Water sample collected from stormwater conveyance ditch along railway. 2550 South August 18, 2022 UDEQ Water sample collected from the railroad crossing at 2550 South Street. 21st South August 18, 2022 UDEQ Water sample collected from stormwater conveyance path at intersection of Wilson Lane and 21st South Street. Storm Drain Discharge August 19, 2022 Ogden City Water sample collected from stormwater conveyance ditch upstream from Wilson Canal crossing. Outlet to Weber August 25, 2022 UDEQ Water sample collected from MS4 outlet point to Weber River. Downstream Weber August 25, 2022 UDEQ Water sample collected from Weber River downstream of MS4 outlet point. Upstream Weber August 25, 2022 UDEQ Water sample collected from Weber River upstream of MS4 outlet point. Wilson Canal August 25, 2022 UDEQ Water sample collected from stormwater conveyance ditch downstream from Wilson Canal crossing. RE Drainage August 25, 2022 UDEQ Water sample collected near stormwater outlet to MS4 at north end of stormwater detention basin at Recycled Earth south Site. RES-1 September 26, 2022 UDEQ Water sample collected from stormwater detention basin at Recycled Earth north Site. A split sample was shared with Recycled Earth and analyzed by Tetra Tech. RES-2 September 26, 2022 UDEQ Water sample collected from stormwater detention basin at Recycled Earth south Site. A split sample was shared with Recycled Earth and analyzed by Tetra Tech. The samples were analyzed by Chemtech-Ford for the following analyses:  August 18, 2022 samples: o Inorganics by Methods SM5210 B, Hach 8000, 1664A, SM4500 H-B, and SM2540 D o Metals by Method 6010B/C/D Site Characterization Plan Recycled Earth Ogden, Utah 7 December 29, 2022 o VOCs by Method 8260D/5030A  August 19, 2022 samples: o Metals by Method 6010B/C/D o Herbicides by Method 8321 o Polychlorinated Biphenyls (PCBs) by Method 8321 o Pesticides by Method 8081 o Gasoline Range Organics by Method 8260 o Diesel Range Organics by Method 8015C/3510B and 8015C o VOCs by Method 8260D/5030A o SVOCs by Method 8270E/3511  August 25, 2022 samples: o Inorganics by Methods SM5210 B, 1664A, and SM2540 D o VOCs by Method 8260D/5030A  September 26, 2022 samples: o Metals by Method 6010B and 7471A o TPH by Methods 8015D/GRO, 8260 and 8015C o VOCs by Method 8260B o SVOCs by Method 8270C Constituent detections are summarized on Table 3 and the full laboratory reports are included in Appendix A. The results show detections of petroleum hydrocarbons at select sample locations and non-hazardous levels of select metals, VOCs, SVOCs, and herbicides (2,4-D detected at the Storm Drain Discharge sample location). The results were compared to the UDEQ Groundwater Quality Standards and EPA RSLs for industrial soils. RSLs for TPH GRO, TPH DRO, and TPH ORO were correlated with the RSLs for TPH aliphatic and aromatic high, low, and medium fractions, respectively, based on carbon fractions. The lower of the two RSL values were used for conservative comparisons. Samples RE Inlet, RE Storm, and RES-1 exceeded the UDEQ Groundwater Quality Standards for arsenic and Soil Sample #1 exceeded the EPA RSL for arsenic but was below the local background level of 15 mg/kg. All other parameters were below detection limits or below the Groundwater Quality Standards and RSLs. Ogden City also deployed an Aqua TROLL 500 water quality sonde to measure field water quality on-Site and along the storm water conveyance path on specific dates during August and September, 2022. The readings were compared to baseline measurements for industrial stormwater in Ogden City and the Weber River. A tabulated summary of results was prepared by Ogden City and provided to Tetra Tech for review and use to include in this Plan, and is included in Appendix C. The parameters measured by the sonde and summarized on the City summary table include the following: specific conductivity, salinity, resistivity, total dissolved solids, pH, and rugged dissolved oxygen. Tetra Tech reviewed the field data with the City during a virtual meeting on October 27, 2022, during which time the City representatives stated that the water quality at the Site was relatively low compared to other field monitoring locations measured along the stormwater conveyance path on August 25, 2022. Similar field measurements conducted on September 27, 2022 showed the lowest water quality among the same field monitoring locations to occur at the Wilson Canal crossing with improved water quality at the Site. SUMMARY OF PRELIMINARY FINDINGS Preliminary sampling performed by Clean Harbors, Tetra Tech, and Ogden City indicate that petroleum hydrocarbon impacts are present in soil and water at the Site. Notably, the highest detections were on-Site, whereas off-Site detections were not significantly above the UDEQ Groundwater Quality Standards and RSLs. All other environmental parameters typically associated with impacts at contaminated sites were not detected in either on-Site or off-Site sample media. The preliminary GC and GC/MS fingerprint analyses conducted by Tetra Tech suggest that the hydrocarbons detected at the Site are different from the hydrocarbons detected along the downstream stormwater conveyance Site Characterization Plan Recycled Earth Ogden, Utah 8 December 29, 2022 path. Additional samples will be collected from the Site and the MS4 stormwater conveyance path to confirm this observation as described in Section 4.0. Sonde data from Ogden City suggest that impacts to water quality that were observed at Recycled Earth during the August 25 measurements, were not as high during the September 27, 2022 measurements; and that higher impacts were observed during the September measurements at downstream locations along the MS4 conveyance path. These field measurements reflect relative water quality parameters as described above and do not indicate the type or concentrations of specific chemical constituents. Based on visual observation of hydrocarbons in the trench excavation where the wastewater was discharged, and the preliminary analytical results, Recycled Earth proposes to perform select preliminary remedial actions described in Section 3.0. Furthermore, based on the preliminary findings, Recycled Earth proposed to conduct additional Site characterization activities to identify and delineate potential secondary sources of impacts to storm water at the Site and downstream locations along the MS4 conveyance path as described in Section 4.0. It is currently unknown whether the releases at the Site have impacted groundwater. Therefore, shallow groundwater wells will be installed to allow groundwater monitoring to be performed as directed by the UDEQ and described in Section 5.0. Site Characterization Plan Recycled Earth Ogden, Utah 9 December 29, 2022 3.0 PRELIMINARY REMEDIAL ACTIONS This section describes preliminary remedial actions to be performed at select areas to address observed and probable sources of petroleum hydrocarbons at the Site. These actions are based on conditions identified through preliminary inspections and environmental sample collection and analysis. These actions are intended to remove the sources of hydrocarbon impacts that could result in preventing impacts to environmental media through migration to surface water or groundwater. FRENCH DRAIN CUTOFF The french subdrain system that crosses beneath the existing concrete pile from south to north will be disconnected from the stormwater drainage system on the north side of the Site. The perforated pipe and surrounding porous media that connect the french drain to the catch basin at the southwest corner of the storm drain system will be excavated at the catch basin inlet box and a mechanical or earth-fill plug will be installed to isolate the french drain and preclude further discharges until characterization and possible remediation are complete for the south area of the Site. This action will prevent further release to the MS4 system from the french drain. The earthwork associated with this remedial action will be performed by Recycled Earth with observation and oversight provided by Tetra Tech. SOUTH TRENCH CLEANOUT The trench excavation near the southern end of the Site (Figure 3) will be pumped out to remove visibly impacted surface water followed by soil excavation to remove visibly impacted soils. Excavations will be guided by visual observations and a handheld photoionization detector (PID) instrument to screen for VOCs. Verification samples will be collected from excavation floors and sidewalls to verify that impacted soils have been sufficiently removed to achieve applicable regulatory screening criteria or at least remove as much source area hydrocarbon mass as possible in the immediate area of the trench. Verification grab samples will be collected every 20 feet along the trench excavation floor and sidewall in accordance with the applicable Standard Operating Procedures (SOPs) in Appendix D. The samples will be sent to Pace for analysis of the following parameters:  VOCs to represent TPH GRO by Method 8260B  SVOCs to represent TPH DRO by Methods 8270C  PAHs by Method 8270-SIM Impacted soils and water removed from the trench will be disposed of at an approved waste management facility. Clean backfill will be used to backfill the open trench to match surrounding land surface elevations and grades. The earthwork associated with this remedial action will be performed by Recycled Earth with observation and oversight provided by Tetra Tech. DETAINED WATER RELEASE Water currently held in the detention basin along Midland Drive and water held on-Site in the stormwater piping and on the ground in the center of the Site will be addressed through the measures presented to Ogden City and the UDEQ, Division of Water Quality (DWQ) in separate correspondence dated December 15, 2022 in cooperation with Ogden City and DWQ (pending concurrence on the approach with the agencies). CATCH BASIN CLEANOUT After the northern portion of the Site has been drained, the catch basins comprising the storm water collection and management system will be cleared of sediment and debris. The purpose for this remedial action is to remove potential oily sediments from the bottoms of the catch basins that could serve as secondary sources of Site Characterization Plan Recycled Earth Ogden, Utah 10 December 29, 2022 hydrocarbon releases to future storm water. The catch basin sediment traps will be power washed with potable water after the solids have been removed and the washout liquids will be pumped out of the catch basins via vacuum truck. The washout liquids and solids removed from the catch basins will be disposed of at approved waste management facilities. Upon completion of the cleanout process, a soil/sediment characterization sample will be obtained from each catch basin as required by Ogden City. The samples will be collected as grab samples in accordance with the applicable SOPs in Appendix D. The samples will be sent to Pace for analysis of the following parameters:  VOCs to represent TPH GRO by Method 8260B  SVOCs to represent TPH DRO by Methods 8270C  PAHs by Method 8270-SIM The work associated with this remedial action will be performed by Recycled Earth with observation and oversight provided by Tetra Tech. EXCAVATION NEAR MAINTENANCE BUILDING The excavation completed by Recycled Earth at the cement pad on the south side of the Maintenance Building will be further excavated to remove additional residual petroleum hydrocarbon impacts. The composite soil sample collected by Tetra Tech during preliminary sample collection exceeded the RSL for TPH DRO indicating that hydrocarbon residues remain that warrant further excavation and removal from the Site. Upon completion of further excavation, five new verification samples will be collected from the excavation floor and sidewall to confirm that impacted soils have been removed to applicable standards. The samples will be collected as grab samples in accordance with the applicable SOPs in Appendix D. The samples will be sent to Pace for analysis of the following parameters:  VOCs to represent TPH GRO by Method 8260B  SVOCs to represent TPH DRO by Methods 8270C  PAHs by Method 8270-SIM The earthwork associated with this remedial action will be performed by Recycled Earth with observation and oversight provided by Tetra Tech. MANAGEMENT OF REMEDIATION MATERIALS Investigation derived waste (IDW) and solid waste generated from preliminary remedial actions that are determined to not be hazardous will be disposed of at Weber County Landfill. Volumes of material and waste manifests will be included in the final report. Plastic sheeting will be used below temporary staging of materials generated through preliminary remedial action. Grab samples will be collected from temporary soil stockpiles at a rate of one sample per 100 cubic yards to allow for laboratory analysis of VOCs (Method 8260B) prior to disposal to verify the soils are below the following limits provided by the Weber County Landfill:  0.03 mg/kg benzene  13 mg/kg ethylbenzene  12 mg/kg toluene  200 mg/kg total xylenes. Site Characterization Plan Recycled Earth Ogden, Utah 11 December 29, 2022 4.0 SURFACE MEDIA CHARACTERIZATION PLAN This section presents the scope of work for sampling and analysis required by the UDEQ and Ogden City. This work included sampling and analysis of surface soils and water at the locations shown on Figure 7. A brief description of the investigation methods is provided below, and complete Standard Operating Procedures (SOPs) developed by Tetra Tech for these activities are presented in Appendix D. SAMPLE COLLECTION Per the NOV from Ogden City, the following samples will be collected on and off-Site: 1. Five water and five soil samples will be collected at generally equal distances along the extent of the french drain as shown on Figure 8. The samples will be collected by excavating to the water table at each location and collecting samples from the open excavations. Soil samples will be collected from the soil-groundwater interface. The french drain invert depth is approximately five feet below ground surface and is below the water table. 2. Six soil samples will be collected as follows to further characterize conditions at the Site: a. Four samples from below the crushed concrete pile on the southern end of the Site. b. Two samples from the stormwater detention basin. 3. Three concrete samples will be collected from the broken concrete materials on the southern side of the Site; and one processed (crushed) concrete sample will be collected from one of the piles in the center of the Site; samples will be collected from one to two foot depth below the surface of the pile and will be crushed to a fine powder using a sledgehammer prior to submittal to the laboratory for analysis. 4. Thirteen soil and five water samples will be collected along the stormwater conveyance flow path from the Site to the Ogden City Limits. Note: The water storage tank will not be sampled as it is hard-piped to Ogden City’s potable water source and cannot be filled with water from external sources; therefore, this tank cannot reasonably be considered a source of impacts to the Site. Furthermore, the tank is currently empty as it is not used for dust control in the winter months. Proposed sample locations are shown on Figures 7 and 8. Actual locations may be adjusted by up to 20 feet depending on field conditions. Areas of the broken concrete pile may require movement to allow for soil sampling below the pile. The SOPs 007, 009, 010, 012, 026, and 027 (Appendix D) provide detailed instruction on the sample collection methods. The characterization samples listed above will be sent to Pace for the following analyses:  PPL Metals by Methods 6010B and 7471A  Chromium (VI) by Methods 3060A/7199 and 3500 CR C-2011  Total Solids by (water samples only) Method SM2540 D  Oil and Grease (water samples only) by Method 1664A  VOCs to represent GRO by Method 8260B  SVOCs to represent DRO by Methods 8270C  PAHs by Method 8270-SIM  TPH ORO by Method 8015  PCB Congeners by Method 8082 If the sample results indicate that excavated soils and/or crushed concrete are classified as hazardous waste, and land disposal restriction (LDR) apply to the future management of these materials, then hazardous waste characterization will be performed to determine appropriate disposal methods. In the event that characterization or verification samples indicate that residual impacts exist, the number of detections and their values relative to RSLs will be assessed for screening purposes. Generally, at sites where Site Characterization Plan Recycled Earth Ogden, Utah 12 December 29, 2022 constituent concentrations fall below RSLs, no further action or study is warranted. However, if multiple constituents are detected at concentrations within an order of magnitude of their respective RSLs, a quantitative risk assessment will be performed to determine whether the additive impact of constituents are at an acceptable risk to human health and the environment, as directed by the DWMRC. The potential for contaminant migration to groundwater will be assessed for residual concentrations by comparing detections to EPA RSLs for protection of groundwater with dilution factor of twenty (DAF-20) applied to account for dilution from groundwater. Potential impacts to ecological receptors will be considered in the quantitative risk assessment (if applicable) based on presence or absence of potential ecological receptors, exposure pathways, and constituents of concern detected in site characterization samples. QUALITY ASSURANCE Duplicate samples will be collected at a rate of one per ten samples. Matrix Spike/Matrix Spike Duplicate samples will be collected at a rate of one per ten samples. Split samples will be provided to Ogden City and DWMRC upon request. The person collecting the samples is responsible for sample custody from the time of sample collection to receipt by a laboratory or until samples are shipped. A sample is considered under custody if one of the following conditions apply:  The sample is in a person’s possession.  The sample is in that person’s view after being in his or her possession.  The sample was in that person’s possession and then placed in a secured location.  The sample is in a designated secure area. Sets of sample containers that are shipped together will be assigned a Chain-of-Custody Record, which will travel with the sample containers. A Chain-of-Custody Record with its assigned sample numbers will accompany all samples to the laboratory. When samples are shipped, custody seals will be attached to each cooler to ensure that tampering with the samples does not occur in transit, and the shipment air bill will become part of the Chain- of-Custody documentation. FIELD RECORDS This section provides the requirements and procedures to document field activities. Referenced forms are included in Appendix E. Field notes should be recorded in general accordance with SOP 002; however, they will not necessarily be in bound logbooks. 4.3.1 Field Notes All activities performed at the Site will be documented in the appropriate field forms using waterproof, indelible ink. Entries will be detailed and descriptive so that a particular situation can be recalled without reliance solely on the field staff’s memory. The following project information will be included in field notes, as applicable:  Weather, personnel on Site, and equipment (including a list of equipment downtime).  Location and description of the work. The Field Manager or Tetra Tech Project Manager will review field notes for clarity and completeness in documenting daily activities and meeting investigation objectives. Site Characterization Plan Recycled Earth Ogden, Utah 13 December 29, 2022 4.3.2 Sampling Log Samples collected by the field staff will be documented in a Sample Log. The Sample Log will include sample identification numbers, soil types/textures, and sample dates/times. An example form is included in Appendix E. Site Characterization Plan Recycled Earth Ogden, Utah 14 December 29, 2022 5.0 SUBSURFACE CHARACTERIZATION PLAN This section describes groundwater monitoring well locations, installation procedures, and groundwater monitoring requirements. MONITORING WELL LOCATIONS Monitoring wells will be installed at the locations shown on Figure 9 and described below:  MW-1: Upgradient of the historical release area (trench). This well will serve as a background well as it is assumed that groundwater at the Site flows towards the northwest based on regional flow patterns.  MW-2: Historical release area where preliminary remediation of the trench area will have taken place. This well is intended to show whether historical releases have impacted groundwater in the immediate area of the release site.  MW-3: South of the inlet box from which the french drain will be disconnected. This well will be used to monitor whether impacted groundwater from the trench area has migrated along the french drain and impacted downgradient groundwater.  MW-4: Near the former fuel tank storage area. The fuel tank is expected to be removed as part of Recycled Earth’s operational changes, and it may be removed prior to installation of these wells. This well will be used to identify potential historical releases from the fueling tanks and will serve as a cross- gradient monitoring point for releases from the trench area.  MW-5: Near northern end of Site. This well will be used to assess whether groundwater impacts may have migrated to the northern, downgradient extent of the Site.  MW-6: Near the south end of the Maintenance Building where hydrocarbon-impacted soil was recently excavated and further removal is planned as part of the preliminary remedial activities to assess whether groundwater in this area has been affected. Groundwater flow direction is inferred based on regional topography. It is assumed that groundwater at the Site flows to the north toward the Weber River. It is possible that actual groundwater flow directions vary from regional patterns due to the french drain that existed for multiple years at the Site. The actual groundwater flow direction at the Site will be interpreted using measured groundwater elevations from the wells once installed. SUBSURFACE SOIL SAMPLING The wells will be installed using hollow-stem auger drilling techniques operated by a qualified subcontractor with observation and oversight provided by Tetra Tech. Boreholes will be four inches in diameter and will extend to at least five feet below the water table. Blue Stakes will be notified prior to the well installations. One subsurface soil sample will be collected from each borehole. The sample will be collected as a grab sample using the collection methods described in Section 4.1. Samples will be collected from areas of visibly impacted soils, soils showing detection of volatile organic vapors with the PID, or from a depth immediately above the water table if observations of potential impacts are not observed. The samples will be shipped to a certified laboratory (Pace) for analysis of the following:  PPL Metals by Methods 6010B and 7471A  Chromium (VI) by Methods 3060A/7199 and 3500 CR C-2011  VOCs to represent GRO by Method 8260B  SVOCs to represent DRO by Methods 8270C  PAHs by Method 8270-SIM  TPH ORO by Method 8015  PCB Congeners by Method 8082 Site Characterization Plan Recycled Earth Ogden, Utah 15 December 29, 2022 All sampling and excavation equipment will be decontaminated between locations using potable water and the decontamination liquids will be removed from the Site for proper disposal. GROUNDWATER MONITORING WELLS The wells will be installed using five-foot PVC well screens with four feet screened below the water table and one foot above the water table. Permeable filter pack material (i.e., sand or pea gravel) sized to match the well screen slot size will be placed to the top of the well screen. Well installation procedures are described in SOP 030 (Appendix D). The uppermost foot of the borehole will be sealed using cement and a flush mount cover will be installed to protect the well and allow access for future sampling. The wells will be developed after allowing the wells to sit for a minimum of 24 hours. A surge block will be used to force water into the surrounding formation and loosen sediments. Surging will be followed by low flow pumping for a minimum of three casing volumes to complete well development. The elevations of the well casings will be surveyed to enable water level measurements and assessment of depths to water and the groundwater flow direction. GROUNDWATER SAMPLING Groundwater elevations will be measured for each well following completion of well development. The water level results will be tabulated and used to evaluate the water level elevations and direction of groundwater flow. Groundwater samples will be collected using the procedures described in SOP 011 (Appendix D). The samples will be packaged using the procedures described in Section 4.5. Groundwater samples will be analyzed for constituents listed in Utah Administrative Code (UAC) R315-308-4 as directed by the UDEQ:  Inorganic Constituents: o ammonia (as N) - 350.1  o carbonate/bicarbonate - 2320 B-2011 o calcium - 6010 o chemical oxygen demand (COD) - 410.4 o chloride – 9056 o iron - 6010 o magnesium - 6010 o manganese - 6010 o nitrate (as N) - 9056 o pH - 9045 o potassium - 6010 o sodium - 6010 o sulfate - 9056 o total dissolved solids (TDS) - 2540 C-2011 o total organic carbon (TOC) - 9060A  PPL Metals by Methods 6010B and 7471A  VOCs by Method 8260B  SVOCs by Method 8270C In addition, TPH GRO (Method 8060) and TPH DRO (Method 8070) concentrations will be obtained through the VOC and SVOC analyses, given the nature of past releases and the preliminary laboratory results. Samples will be collected following the procedures and quality assurance requirements described in Sections 4.1 and 4.2. One round of groundwater samples will be collected from the wells for comparison to RSLs and the Utah Groundwater Protection Standards specified in UAC R315-308-4. The results from this evaluation will be presented in a report to UDEQ and Ogden City; and depending on the results supplemental rounds of groundwater sampling may be recommended by Recycled Earth. Site Characterization Plan Recycled Earth Ogden, Utah 16 December 29, 2022 6.0 REPORTING REQUIREMENTS Tetra Tech submitted to Ogden City preliminary sample results from samples collected by Clean Harbors and Tetra Tech on October 21, 2022, in accordance with the Ogden City NOV. Concurrently, Ogden City provided copies of its laboratory results to Tetra Tech for inclusion and consideration in this Site Characterization Plan. All preliminary sample results are included in this Plan as Appendix A. Ogden City and UDEQ have provided separate reviews and comments on this Site Characterization Plan. This revised version of the Plan is intended to respond to and provide revisions based on the input received from Ogden City and UDEQ. Recycled Earth understands that commencement of the Site characterization work cannot begin until both Ogden City and UDEQ approve this Plan. During this next phase of Plan review, Recycled Earth and Tetra Tech will communicate regularly with Ogden City and UDEQ to facilitate an expeditious start to this work. A Report for Preliminary Remedial Activities and Site Characterization Observations will be prepared upon completion of the tasks described in this Plan. The report will include a summary of the work completed and note significant deviations from this Plan. It will include observations during performance of the work, analytical results, quantitative risk analysis for residual concentrations left in place (if applicable), and conclusions based on Tetra Tech’s evaluation of the results. Copies of raw analytical reports will be provided to Ogden City upon receipt in accordance with the Ogden NOV. Site Characterization Plan Recycled Earth Ogden, Utah 17 December 29, 2022 7.0 SCHEDULE The schedule for site characterization and preliminary remediation has been updated and is shown on the table below; however, the start for these activities is subject to approval of this Plan by Ogden City and UDEQ. Description Estimated Dates Preliminary remedial actions January-February 2023 Surface media characterization sampling February-March 2022 Draft Report for Preliminary Remedial Activities and Site Characterization Activities March-April 2023 Final Report for Preliminary Remedial Activities and Site Characterization Activities May-June 2023 (following Ogden City and UDEQ approval of the draft report) The schedule will depend upon the review periods required for Ogden City and UDEQ approvals. Surface media sampling that requires minimal preparation will be completed within two weeks of approval from Ogden City and UDEQ. Ogden City and UDEQ will be notified a minimum of 48 hours before the first sample date and time. Samples that are more difficult to access, including the french drain samples, will be collected within four weeks of approval. Subsurface sampling and groundwater monitoring well installation will commence upon approval from the UDEQ and based on availability of a qualified drilling company. Site Characterization Plan Recycled Earth Ogden, Utah 18 December 29, 2022 8.0 REFERENCES Amec Foster Wheeler Environment & Infrastructure, Inc. 2014. Ogden Business Exchange, Remedial Action Work Plan, Voluntary Cleanup Program, Assistance ID No. C084, Ogden, Utah. EPA, Regional Screening Level (RSL) Summary Table (TR=1E-06, HQ-1), May 2022 UDEQ Utah Ground Water Quality Protection Program, accessed by web 12/05/2022: https://deq.utah.gov/water- quality/standards-utah-ground-water-quality-protection-program     Tables Table 1: Clean Harbors Sample Detections Water #1 Water #2 RRC Water WC Water WC  Base  Water Arsenic 5 0.05 <0.50 <0.50 <0.50 <0.50 <0.50 Barium 100 0.76 0.34 0.35 <1.1 <1.1 Lead 5 <0.20 <0.20 <0.20 <0.20 <0.20 TCLP VOCs 3 & 4‐Methylphenol <0.20 <0.20 <0.20 <0.20 <0.20 Gasoline Range Organics <4.5 <4.5 <4.5 <4.5 <4.5 Diesel Range Organics 3.7 <90 <90 183 <90 Oil Range Organics 1.5 <904 <904 186 <904 TPH 5.2 <999 <999 369 <999 Soil #1 RRC Soil WC Soil WC Base Soil Arsenic 5 <0.5 <0.5 <0.5 <0.5 Barium 100 1.57 2.22 0.93 1.07 Lead 5 <0.20 0.25 <0.20 <0.20 TCLP VOCs 3 & 4‐Methylphenol 0.33 <0.20 <0.20 <0.20 Soil #1 RRC Soil WC Soil WC Base Soil Gasoline Range Organics 2,200 22 <4.5 <4.5 <4.5 Diesel Range Organics 440 29,400 200 1,610 <90 Oil Range Organics 30,000 17,400 <904 1,610 <904 TPH 46,822 200 3,220 <999 Notes: Results with a < symbol  were not detected above the laboratory detection limit.  TCLP = Toxicity Characteristic Leachate Procedure TPH = Total Petroleum Hydrocarbons UDEQ = Utah Departmetn of Environmental Quality VOC = Volatile Organic Compound mg/l = milligram per liter mg/kg = milligram per kilogram Bold values indicate exceedance of State and/or federal screening levels Water Sample Results (mg/L)UDEQ Groundwater  Quality Standards  (mg/L) Analyte Group Analyte TCLP Soil Sample Results (mg/L) Total Petroleum  Hydrocarbons AnalyteAnalyte Group Toxicity  Characteristic Limits  (mg/L) TCLP Metals Soil Sample Results (mg/kg) TCLP Metals Total Petroleum  Hydrocarbons Toxicity  Characteristic Limits  (mg/L) Analyte Group Analyte EPA Industrial  Screening Level  (mg/kg) Table 2: Tetra Tech Sample Detections TRENCH‐SW INLET‐SW TRENCH‐SS BLAST‐SS CONC‐SS POND‐SS CONF‐SS Antimony 0.006 0.013 <0.01 470 <2.8 22 3.8 <0.01 <0.01 Arsenic 0.05 0.46 0.058 3.0 8.4 19 6.5 2.8 4.2 Beryllium <0.002 <0.002 2,300 <0.28 <0.28 0.44 <0.28 0.48 Chromium 0.1 0.013 <0.01 8.0 928 171 62 14 Copper 1.3 0.041 0.013 47,000 14.1 1,110 232 56 12 Lead 0.015 <0.006 <0.006 800 4.5 24 16 10 10 Mercury 0.002 <0.0002 <0.0002 46 <0.0561 <0.0561 <0.0561 <0.0561 <0.0561 Nickel 0.093 <0.01 4.4 430 78 31 7.9 Selenium 0.05 <0.01 <0.01 5,800 <2.8 <2.8 <2.8 <2.8 <2.8 Silver 0.1 <0.005 <0.005 5,800 <0.005 <0.005 <0.005 <0.005 <0.005 Thallium 0.002 <0.01 <0.01 <2.8 <2.8 <2.8 <2.8 <2.8 Zinc 0.22 <0.05 30 51 60 33 44 Gasoline Range Organics <1 0.17 2,200 19 5.5 1.3 0.26 <4.51 Diesel Range Organics 70 3.0 440 2,940 13 21 57 684 Oil Range Organics 2.4 <2 30,000 957 47 118 351 1,810 TPH 73 3.0 3,916 66 140 408 2494 1,2,4‐Trimethylbenzene <0.001 <0.001 0.30 <0.0361 <0.0361 <0.0361 <0.0361 1,2,3‐Trimethylbenzene <0.001 <0.001 0.09 <0.0361 <0.0361 <0.0361 <0.0361 1,3,5‐Trimethylbenzene <0.001 <0.001 0.11 <0.0361 <0.0361 <0.0361 <0.0361 2‐Butanone (MEK)0.81 0.035 0.75 <0.721 <0.721 <0.721 <0.721 4‐Methyl‐2‐pentanone (MIBK)0.38 0.036 1.7 <0.18 <0.18 <0.18 <0.18 Acetone <0.05 <0.05 1,100,000 <0.361 <0.361 <0.361 <0.361 <0.361 Benzene 0.005 <0.001 <0.001 5.1 <0.00721 0.009 <0.00721 0.0014 <0.00721 Ethylbenzene 0.7 <0.001 <0.001 25 <0.018 0.008 <0.018 <0.018 <0.018 Methyl tert‐Butyl Ether (MTBE)<0.00721 <0.00721 210 <0.001 <0.001 <0.001 <0.001 <0.001 Naphthalene <0.005 <0.005 8.6 0.17 <0.0902 <0.0902 <0.0902 <0.0902 n‐Propylbenzene <0.001 <0.001 <0.0361 <0.0361 <0.0361 <0.0361 <0.0361 p‐Isopropyltoluene <0.001 <0.001 0.06 <0.0361 <0.0361 <0.0361 <0.0361 Styrene <0.001 <0.001 35,000 <0.0902 <0.0902 <0.0902 <0.0902 <0.0902 Tetrachloroethene <0.001 <0.001 <0.018 <0.018 <0.018 <0.018 <0.018 Toluene 1 0.020 0.049 47,000 0.91 0.028 <0.0361 <0.0361 <0.0361 Xylenes, Total 10 <0.003 <0.003 2,500 0.10 0.010 <0.0469 <0.0469 <0.0469 Di‐n‐butyl phthalate <0.003 <0.003 <0.467 <0.467 <0.467 <0.467 <0.467 2,4‐Dimethylphenol <0.01 <0.01 <0.467 <0.467 <0.467 <0.467 <0.467 Phenol 0.28 0.011 250,000 <0.467 <0.467 <0.467 <0.467 <0.467 Chrysene <0.001 <0.001 2,100 <0.0467 <0.0467 <0.0467 <0.0467 <0.0467 Notes: Results with a < symbol  were not detected above the laboratory detection limit.  EPA = Environmental Protection Agency TPH = Total Petroleum Hydrocarbons UDEQ = Utah Departmetn of Environmental Quality mg/L = milligram per liter mg/kg = milligram per kilogram Bold values indicate exceedance of State and/or federal screening levels UDEQ Groundwater  Quality Standards  (mg/L) Sample Results (mg/kg) Volatile Organic  Compounds  (VOCs) Semi‐Volatile  Organic  Compounds  (VOCs) Metals EPA Industrial  Screening Level  (mg/kg) Analyte Group Analyte Petroleum  Hydrocarbons  Water Sample Results (mg/L) Table 3: Ogden City and UDEQ Sample Detections Soil Samples RE Inlet RE Storm AS Stream 2550 South 21st South Storm Drain  Discharge Outlet to  Weber Downstream  Weber Upstream  Weber Wilson Canal RE Drainage RES‐1 RES‐1 Split Sample RES‐2 RES‐2 Split Sample Soil Sample #1  (mg/kg) 8/18/2022 8/18/2022 8/18/2022 8/18/2022 8/18/2022 8/19/2022 8/25/2022 8/25/2022 8/25/2022 8/25/2022 8/25/2022 9/26/2022 9/26/2022 9/26/2022 9/26/2022 8/18/2022 Biochemical Oxygen Demand 2,810 750 434 300 11 NA <5 <5 <5 399 11,200 NA NA NA NA NA Chemical Oxygen Demand 8,050 1,100 696 504 51 NA NA NA NA NA NA NA NA NA NA NA Oil and Grease 24 5.0 <5 <5 <5 NA <5 <5 <10 9.0 16,000 <5 NA <5 NA NA pH1 6.5 ‐ 8.5 6.7 6.9 7.4 7.1 7.9 NA NA NA NA NA NA NA NA NA NA NA Total Suspended Solids 52 27 396 267 10 NA 6.0 18 17 26 19,300 NA NA NA NA NA Total Solids NA NA NA NA NA NA NA NA NA NA NA NA NA NA NA 74 Antimony 0.006 NA NA NA NA NA NA NA NA NA NA NA NA <0.01 NA <0.01 470 0.31 Arsenic 0.05 0.12 0.10 <0.05 <0.05 0.06 <0.05 NA NA NA NA NA 0.060 0.064 <0.05 0.013 3.0 5.8 Barium 2.0 0.51 0.91 0.63 0.62 0.36 0.014 NA NA NA NA NA 0.11 NA 1.0 NA NA Cadmium 0.005 <0.005 <0.005 <0.005 <0.005 <0.005 <0.005 NA NA NA NA NA <0.005 <0.002 ND <0.002 0.16 Chromium 0.1 0.005 0.006 0.009 0.02 <0.005 <0.005 NA NA NA NA NA <0.005 <0.01 0.23 <0.01 4.4 Cobalt NA NA NA NA NA NA NA NA NA NA NA NA NA NA NA 350 1.2 Copper 1.3 NA NA NA NA NA NA NA NA NA NA NA NA 0.015 NA 0.014 47,000 15 Lead 0.015 <0.02 <0.02 0.010 0.02 <0.02 <0.02 NA NA NA NA NA <0.02 <0.006 0.10 <0.006 800 3.0 Manganese NA NA NA NA NA NA NA NA NA NA NA NA NA NA NA 26,000 71 Mercury 0.002 <0.0002 <0.0002 <0.0002 <0.0002 <0.0002 <0.0002 NA NA NA NA NA <0.0002 <0.0002 0.0002 <0.0002 46 0.010 Molybdenum NA NA NA NA NA NA NA NA NA NA NA NA NA NA NA 5,800 1.1 Nickel NA NA NA NA NA NA NA NA NA NA NA NA 0.011 NA <0.01 3.1 Selenium 0.05 0.04 0.01 0.007 0.008 0.01 0.01 NA NA NA NA NA <0.05 <0.01 0.0090 <0.01 5,800 0.31 Silver 0.1 <0.005 <0.005 <0.005 <0.005 <0.005 <0.005 NA NA NA NA NA <0.005 <0.005 <0.005 <0.005 5,800 0.040 Thallim 0.002 NA NA NA NA NA NA NA NA NA NA NA NA NA NA NA <0.57 Vanadium NA NA NA NA NA NA NA NA NA NA NA NA NA NA NA 5,800 4.5 Herbicides 2,4‐D 0.07 NA NA NA NA NA 0.010 NA NA NA NA NA NA NA NA NA NA Diesel Range Organics NA NA NA NA NA 1.8 NA NA NA NA NA 2.1 3.4 3.0 5.6 2,200 NA Gasoline Range Organics NA NA NA NA NA <0.01 NA NA NA NA NA <0.01 <1 <0.01 <1 440 NA Oil Range Organics NA NA NA NA NA NA NA NA NA NA NA NA 7.0 NA 8.0 30,000 NA TPH NA NA NA NA NA NA NA NA NA NA NA NA 10 NA 14 NA 1,2,4‐Trimethylbenzene NA NA NA NA NA <0.001 <0.001 <0.001 <0.001 0.0004 <0.001 <0.001 <0.001 <0.001 <0.001 0.070 1,3,5‐Trimethylbenzene NA NA NA NA NA <0.001 <0.001 <0.001 <0.001 <0.001 <0.001 <0.001 <0.001 <0.001 <0.001 0.030 2‐Butanone (MEK)NA NA NA NA NA 0.017 <0.01 <0.01 <0.01 0.066 <0.01 0.081 <0.01 <0.01 <0.01 190,000 5.0 Acetone NA NA NA NA NA 0.046 <0.01 <0.01 <0.01 0.061 0.011 0.031 <0.05 0.033 <0.05 1,100,000 4.86 Benzene 0.005 <0.005 <0.005 <0.005 <0.005 <0.005 <0.0008 <0.0004 <0.0004 <0.0004 <0.0004 <0.0004 <0.0004 <0.001 <0.0004 <0.001 5.1 <0.01 Carbon Disulfide NA NA NA NA NA 0.0008 <0.001 <0.001 <0.001 0.0013 <0.001 0.0033 NA 0.0012 NA 3,500 0.020 Isobutanol NA NA NA NA NA <0.01 <0.01 <0.01 <0.01 0.073 <0.01 0.031 NA <0.01 NA 1.81 Ethyl Acetate NA NA NA NA NA <0.01 <0.01 <0.01 <0.01 <0.01 <0.01 0.024 NA <0.01 NA <0.03 Ethylbenzene 0.7 <0.012 <0.012 <0.012 <0.012 <0.012 <0.001 <0.001 <0.001 <0.001 <0.001 <0.001 <0.001 <0.001 <0.001 <0.001 25 0.010 Methyl Isobutyl Ketone NA NA NA NA NA 0.017 <0.01 <0.01 <0.01 0.0393 <0.01 <0.01 NA <0.01 NA 140,000 3.05 Naphthalene <0.012 <0.012 <0.012 <0.012 <0.012 0.0009 <0.001 <0.001 <0.001 <0.001 <0.001 <0.001 <0.005 <0.001 <0.005 8.6 0.040 n‐Butyl Alcohol NA NA NA NA NA <0.04 <0.04 <0.04 <0.04 <0.04 <0.04 <0.040 NA <0.040 NA 37.2 p‐Isopropyltoluene NA NA NA NA NA <0.001 <0.001 <0.001 <0.001 <0.001 <0.001 0.0005 <0.001 <0.001 <0.001 <0.03 Tetrachloroethene NA NA NA NA NA 0.0009 <0.001 <0.001 <0.001 <0.001 <0.001 <0.001 <0.001 <0.001 <0.001 <0.03 Toluene 1 0.019 0.057 <0.012 <0.012 <0.012 0.0015 <0.001 <0.001 <0.001 0.1 <0.001 0.0016 0.0016 0.0041 0.0041 47,000 0.17 Xylenes, Total 10 <0.012 <0.012 <0.012 <0.012 <0.012 0.0008 <0.001 <0.001 <0.001 <0.001 <0.001 <0.001 <0.003 <0.001 <0.003 2,500 0.090 3 & 4‐Methylphenol NA NA NA NA NA 0.0040 NA NA NA NA NA 0.025 NA 0.11 NA 820 3.4 Benzoic acid NA NA NA NA NA <0.10 NA NA NA NA NA 0.049 NA 0.13 NA <13.5 Benzyl Alcohol NA NA NA NA NA <0.01 NA NA NA NA NA 0.012 NA <0.01 NA <5.39 Bis (2‐ethylhexyl) Phthalate NA NA NA NA NA <0.01 NA NA NA NA NA <0.01 <0.003 <0.01 <0.003 1.11 Di‐n‐butylphthalate NA NA NA NA NA 0.0040 NA NA NA NA NA <0.01 <0.003 <0.01 <0.003 NA Di‐n‐Octylphthalate NA NA NA NA NA <0.01 NA NA NA NA NA <0.01 <0.003 <0.01 <0.003 1.1 n‐Octadecane NA NA NA NA NA NA NA NA NA NA NA NA NA NA NA 1.8 Phenol NA NA NA NA NA <0.01 NA NA NA NA NA <0.01 <0.01 0.024 0.010 250,000 6.0 Notes: Results with a < symbol  were not detected above the laboratory detection limit.  EPA = Environmental Protection Agency NA = Not Analyzed TPH = Total Petroleum Hydrocarbons UDEQ = Utah Departmetn of Environmental Quality mg/L = milligram per liter mg/kg = milligram per kilogram 1: Units are in standard pH units EPA Industrial  Screening Level  (mg/kg) Sample Results (mg/L) UDEQ Groundwater  Quality Standards  (mg/L) Inorganic  Semi‐Volatile  Organic  Compounds  (VOCs) AnalyteAnalyte Group Volatile Organic  Compounds  (VOCs) Petroleum  Hydrocarbons Metals Figures ± Figure 1: Site Location Recycled Earth, Ogden, Utah.Site Characterization Plan forRecycled Earth South Operations Date: 10/27/2022 Legend Site Location Weber County, Utah 0 1.50.75 Miles Site Location: Weber County, Utah ")") ") ") ") ") ") ") ") ") ± Figure 2. Site Map Recycled Earth, Ogden, Utah 3025 South 1500 West, Ogden, Utah Site Characterization Plan for Recycled Earth South Operations Date: 12/14/2022 Legend ")Storm Water Outfalls and Sample Locations ")Catch Basins Storm Water Flow Direction Storm Drain Pipes Perforated Pipe (French Drain) Approximate Property Boundary Weber County, Utah 0 300150 Feet Sou t h e a s t P o n d High e r G r o u n d Hi g h e r G r o u n d Crusher and Crushed Concrete Piles Uncrushed Concrete Pile (<5% asphalt) Soil Pile Rock Pile Wood, Cardboard Pile Compost Area Water Tank and Diesel Tank Outfall #2 Outfall #1 Retail Sales Bld g A Maint. Shop ± Figure 3. Previous Excavations Recycled Earth, Ogden, Utah3025 South 1500 West, Ogden, Utah Site Characterization Plan for Recycled Earth South Operations Date: 11/17/2022 Legend Approximate Property Boundary Weber County, Utah 0 200100 Feet High e r G r o u n d Crusher and Crushed Concrete Piles Uncrushed Concrete Pile (<5% asphalt) Soil Pile Rock Pile Wood, Cardboard Pile Oily Soil Excavation Area Bld g A Maint. Shop Water Tank and Diesel Tank South Trench Hi g h e r G r o u n d Soil #1 Water #2 Water #1 WC Soil and Water RRC Soil and Water WC Base Soil and Water ± Figure 4: Clean HarborsSample Locations Recycled Earth, Ogden, Utah. Site Characterization Plan for Recycled Earth South Operations Date: 10/18/2022 Legend !(Clean Harbor Sample Locations Weber County, Utah 0 0.50.25 Miles CONF-SS POND-SS INLET-SW BLAST-SS and CONC-SS TRENCH-SS and Trench-SW ± Figure 5: Tetra Tech Preliminary Sample Locations Recycled Earth, Ogden, Utah. Site Characterization Plan for Recycled Earth South Operations Date: 10/25/2022 Legend !(Tetra Tech Sample Locations Weber County, Utah 0 500250 Feet !( !( !( !( !( !( !( !( !( !( !( !( !( !( AS Stream RES-2RES-1 RE Storm RE Inlet Soil Sample #1 21st South 2550 South RE Drainaige Wilson Canal Upstream Weber Outlet to WeberDownstream Weber Storm Drain Discharge ± Figure 6: Ogden City Sample Locations Recycled Earth, Ogden, Utah.Site Characterization Plan for Recycled Earth South Operations Date: 10/26/2022 Legend !(Ogden City Sample Locations Weber County, Utah 0 0.50.25 Miles !( !( !( !( !( !( !( !( !( !(!( !( !( !( !( !( !( !( !( !( !( !( !( SS-1SS-2 SS-3 SS-9 SS-11 SS-10 SS-8 SS-7 SS-6 SS-5 SS-12 SS-13 SS-4 SW-2 SW-4 SW-5 SW-3 SW-1 FD-5 FD-4 FD-3 FD-2 FD-1 ± Figure 7: Surface Media Characterization Sample Locations Recycled Earth, Ogden, Utah. Site Characterization Plan for Recycled Earth South Operations Date: 10/27/2022 Legend !( !( !( French Drain Samples Water Samples Soil Samples Flow Path Weber County, Utah 0 0.50.25 Miles !( !( !( !( !( !( !( !( !( !( !( !( !( !( !( !( SS-1 SS-2 SS-3 SS-7 SS-6 SS-5 SS-4 FD-5 FD-4 FD-3 FD-2 FD-1 CS-4 CS-3 CS-2 CS-1 ± Figure 8: On-Site Surface MediaCharacterization Sample Locations Recycled Earth, Ogden, Utah.Site Characterization Plan forRecycled Earth South Operations Date: 12/16/2022 Legend !(French Drain !(Soil Samples !(Concrete Samples Pollutant Potential Flow Path Weber County, Utah 0 400200 Feet !( !( !( !( !( !( MW-6 MW-4 MW-5 MW-3 MW-1 MW-2 ± Date: 11/17/2022 Legend !(Monitoring Wells Figure 9: Monitoring Well Locations Recycled Earth, Ogden, Utah.Site Characterization Plan for Recycled Earth South Operations Weber County, Utah 0 0.060.03 Miles Appendix A Laboratory Results Appendix A-1 Clean Harbors Samples The analyses presented on this report were performed in accordance with the National Environmental Laboratory Accreditation Program (NELAP) unless noted in the comments, flags, or case narrative. If the report is to be used for regulatory compliance, it should be presented in its entirety, and not be altered. Client Service Contact: 801.262.7299 Clean Harbors - Environmental Services Attn: Anthony Cox 3589 W 500 S SLC, UT 84104 Work Order: 22H2736 Project: Recycled Earth 9/8/2022 Approved By: Reed Hendricks, Director of Operations 9632 South 500 West Sandy, Utah 84070 Serving the Intermountain West since 1953 801.262.7299 Main 866.792.0093 Fax www.ChemtechFord.com Page 1 of 22 xx Chemtech-Ford Laboratories Serving the Intermountain West Since 1953 Certificate of Analysis 9632 South 500 West Sandy, UT 84070 O:(801) 262-7299 F: (866) 792-0093 www.ChemtechFord.com Clean Harbors - Environmental Services Anthony Cox 3589 W 500 S SLC, UT 84104 PO#: Receipt: Date Reported: Project Name: 8/29/22 11:50 @ 1.5 °C 9/8/2022 Recycled Earth Sample ID: Soil #1 Lab ID: 22H2736-01Matrix: Solid Flag(s)Units Analysis Date/Time Date Sampled: 8/27/22 10:20 Preparation Date/Time Sampled By: Anthony Cox Minimum Reporting Limit MethodResult Inorganic °F 9/1/229/1/2280EPA 1010MOD>200Flashpoint pH Units 8/29/228/29/220.1 EPA 9045D5.3pH %8/30/228/29/220.1 EPA 8000C50.6Total Solids TCLP Metals mg/L 9/6/229/6/220.50 EPA 6010BNDArsenic, TCLP mg/L 9/6/229/6/220.20 EPA 6010B1.57Barium, TCLP mg/L 9/6/229/6/220.050 EPA 6010BNDCadmium, TCLP mg/L 9/6/229/6/220.050 EPA 6010BNDChromium, TCLP mg/L 9/6/229/6/220.20 EPA 6010BNDLead, TCLP mg/L 9/8/229/7/220.0020 EPA 7470ANDMercury, TCLP mg/L 9/6/229/6/220.50 EPA 6010BNDSelenium, TCLP mg/L 9/6/229/6/220.05 EPA 6010BNDSilver, TCLP TCLP Herbicides mg/L 9/7/229/6/220.10 EPA 8321ND2,4-D, TCLP mg/L 9/7/229/6/220.10 EPA 8321ND2,4,5-TP (Silvex), TCLP PCBs mg/kg dry 9/1/228/30/223.9 EPA 8082NDPCB-1260 mg/kg dry 9/1/228/30/223.9 EPA 8082NDPCB-1254 mg/kg dry 9/1/228/30/223.9 EPA 8082NDPCB-1248 mg/kg dry 9/1/228/30/223.9 EPA 8082NDPCB-1242 mg/kg dry 9/1/228/30/223.9 EPA 8082NDPCB-1232 mg/kg dry 9/1/228/30/223.9 EPA 8082NDPCB-1221 mg/kg dry 9/1/228/30/223.9 EPA 8082NDPCB-1016 mg/kg dry 9/1/228/30/223.9 EPA 8082NDPCB-1268 TCLP Pesticides mg/L 9/8/229/7/220.005 EPA 8081A/1311NDChlordane, TCLP mg/L 9/8/229/7/220.0005 EPA 8081A/1311NDEndrin, TCLP mg/L 9/8/229/7/220.0005 EPA 8081A/1311NDHeptachlor, TCLP mg/L 9/8/229/7/220.0005 EPA 8081A/1311NDHeptachlor Epoxide, TCLP mg/L 9/8/229/7/220.0005 EPA 8081A/1311NDLindane, TCLP mg/L 9/8/229/7/220.005 EPA 8081A/1311NDMethoxychlor, TCLP mg/L 9/8/229/7/220.01 EPA 8081A/1311NDToxaphene, TCLP Gasoline Range mg/kg dry 8/30/228/30/224.9 EPA 8260/62422.1Gasoline Range Organics Diesel Range mg/kg dry 9/1/228/31/22987EPA 8015C/3550B29400Diesel Range Organics mg/kg dry 9/1/228/31/229870EPA 8015 C17400Oil Range Organics Project Name: Recycled Earth CtF WO#: 22H2736 www.ChemtechFord.com Page 2 of 21Page 2 of 22 xx Chemtech-Ford Laboratories Serving the Intermountain West Since 1953 Certificate of Analysis 9632 South 500 West Sandy, UT 84070 O:(801) 262-7299 F: (866) 792-0093 www.ChemtechFord.com Clean Harbors - Environmental Services Anthony Cox 3589 W 500 S SLC, UT 84104 PO#: Receipt: Date Reported: Project Name: 8/29/22 11:50 @ 1.5 °C 9/8/2022 Recycled Earth Sample ID: Soil #1 (cont.) Lab ID: 22H2736-01Matrix: Solid Flag(s)Units Analysis Date/Time Date Sampled: 8/27/22 10:20 Preparation Date/Time Sampled By: Anthony Cox Minimum Reporting Limit MethodResult TCLP Volatile Organic Compounds mg/L 9/2/229/2/220.25 EPA 8260D/1311/5030AND1,1-Dichloroethylene, TCLP mg/L 9/2/229/2/220.25 EPA 8260D/1311/5030AND1,2-Dichloroethane, TCLP mg/L 9/2/229/2/220.25 EPA 8260D/1311/5030AND1,4-Dichlorobenzene, TCLP mg/L 9/2/229/2/220.25 EPA 8260D/1311/5030ANDBenzene, TCLP mg/L 9/2/229/2/220.25 EPA 8260D/1311/5030ANDCarbon Tetrachloride, TCLP mg/L 9/2/229/2/220.25 EPA 8260D/1311/5030ANDChlorobenzene, TCLP mg/L 9/2/229/2/220.25 EPA 8260D/1311/5030ANDChloroform, TCLP mg/L 9/2/229/2/220.25 EPA 8260D/1311/5030ANDHexachlorobutadiene, TCLP mg/L 9/2/229/2/222.50 EPA 8260D/1311/5030ANDMethyl Ethyl Ketone, TCLP mg/L 9/2/229/2/220.25 EPA 8260D/1311/5030ANDTetrachloroethylene, TCLP mg/L 9/2/229/2/220.25 EPA 8260D/1311/5030ANDTrichloroethylene, TCLP mg/L 9/2/229/2/220.20 EPA 8260D/1311/5030ANDVinyl Chloride, TCLP TCLP Semi-Volatile Compounds mg/L 9/6/229/6/220.10 EPA 8270E/1311/3511ND1,4-Dichlorobenzene mg/L 9/6/229/6/220.10 EPA 8270E/1311/3511ND2,4,5-Trichlorophenol mg/L 9/6/229/6/220.10 EPA 8270E/1311/3511ND2,4,6-Trichlorophenol mg/L 9/6/229/6/220.10 EPA 8270E/1311/3511ND2,4-Dinitrotoluene mg/L 9/6/229/6/220.10 EPA 8270E/1311/3511ND2-Methylphenol mg/L 9/6/229/6/220.10 EPA 8270E/1311/35110.333 & 4-Methylphenol mg/L 9/6/229/6/220.10 EPA 8270E/1311/3511NDHexachlorobenzene mg/L 9/6/229/6/220.10 EPA 8270E/1311/3511NDHexachlorobutadiene mg/L 9/6/229/6/220.10 EPA 8270E/1311/3511NDHexachloroethane mg/L 9/6/229/6/220.10 EPA 8270E/1311/3511NDNitrobenzene mg/L 9/6/229/6/220.10 EPA 8270E/1311/3511NDPentachlorophenol mg/L 9/6/229/6/220.10 EPA 8270E/1311/3511NDPyridine Project Name: Recycled Earth CtF WO#: 22H2736 www.ChemtechFord.com Page 3 of 21Page 3 of 22 xx Chemtech-Ford Laboratories Serving the Intermountain West Since 1953 Certificate of Analysis 9632 South 500 West Sandy, UT 84070 O:(801) 262-7299 F: (866) 792-0093 www.ChemtechFord.com Clean Harbors - Environmental Services Anthony Cox 3589 W 500 S SLC, UT 84104 PO#: Receipt: Date Reported: Project Name: 8/29/22 11:50 @ 1.5 °C 9/8/2022 Recycled Earth Sample ID: Water #1 Lab ID: 22H2736-02Matrix: Water Flag(s)Units Analysis Date/Time Date Sampled: 8/27/22 10:45 Preparation Date/Time Sampled By: Anthony Cox Minimum Reporting Limit MethodResult Inorganic °F 9/1/229/1/2280.0 EPA 1010>200Flashpoint pH Units SPH8/29/22 16:378/29/22 16:090.1 SM 4500 H-B6.7pH TCLP Metals mg/L 9/2/229/2/220.50 EPA 6010BNDArsenic, TCLP mg/L 9/2/229/2/220.20 EPA 6010B0.76Barium, TCLP mg/L 9/2/229/2/220.050 EPA 6010BNDCadmium, TCLP mg/L 9/2/229/2/220.050 EPA 6010BNDChromium, TCLP mg/L 9/2/229/2/220.20 EPA 6010BNDLead, TCLP mg/L 9/2/229/2/220.0020 EPA 7470ANDMercury, TCLP mg/L 9/2/229/2/220.50 EPA 6010BNDSelenium, TCLP mg/L 9/2/229/2/220.05 EPA 6010BNDSilver, TCLP TCLP Herbicides mg/L 9/7/229/6/220.10 EPA 8321ND2,4-D, TCLP mg/L 9/7/229/6/220.10 EPA 8321ND2,4,5-TP (Silvex), TCLP PCBs ug/L 9/1/228/30/222.0 EPA 8082NDPCB-1260 ug/L 9/1/228/30/222.0 EPA 8082NDPCB-1254 ug/L 9/1/228/30/222.0 EPA 8082NDPCB-1248 ug/L 9/1/228/30/222.0 EPA 8082NDPCB-1242 ug/L 9/1/228/30/222.0 EPA 8082NDPCB-1232 ug/L 9/1/228/30/222.0 EPA 8082NDPCB-1221 ug/L 9/1/228/30/222.0 EPA 8082NDPCB-1016 ug/L 9/1/228/30/222.0 EPA 8082NDPCB-1268 TCLP Pesticides mg/L 9/3/229/2/220.005 EPA 8081A/1311NDChlordane, TCLP mg/L 9/3/229/2/220.0005 EPA 8081A/1311NDEndrin, TCLP mg/L 9/3/229/2/220.0005 EPA 8081A/1311NDHeptachlor, TCLP mg/L 9/3/229/2/220.0005 EPA 8081A/1311NDHeptachlor Epoxide, TCLP mg/L 9/3/229/2/220.0005 EPA 8081A/1311NDLindane, TCLP mg/L 9/3/229/2/220.005 EPA 8081A/1311NDMethoxychlor, TCLP mg/L 9/3/229/2/220.01 EPA 8081A/1311NDToxaphene, TCLP Gasoline Range mg/L 8/29/228/29/220.12 EPA 8260/624NDGasoline Range Organics Diesel Range mg/L 8/29/228/29/221.0 EPA 8015C/3510B3.7Diesel Range Organics mg/L 8/29/228/29/221.0 EPA 8015 C1.5Oil Range Organics TCLP Volatile Organic Compounds Project Name: Recycled Earth CtF WO#: 22H2736 www.ChemtechFord.com Page 4 of 21Page 4 of 22 xx Chemtech-Ford Laboratories Serving the Intermountain West Since 1953 Certificate of Analysis 9632 South 500 West Sandy, UT 84070 O:(801) 262-7299 F: (866) 792-0093 www.ChemtechFord.com Clean Harbors - Environmental Services Anthony Cox 3589 W 500 S SLC, UT 84104 PO#: Receipt: Date Reported: Project Name: 8/29/22 11:50 @ 1.5 °C 9/8/2022 Recycled Earth Sample ID: Water #1 (cont.) Lab ID: 22H2736-02Matrix: Water Flag(s)Units Analysis Date/Time Date Sampled: 8/27/22 10:45 Preparation Date/Time Sampled By: Anthony Cox Minimum Reporting Limit MethodResult TCLP Volatile Organic Compounds (cont.) mg/L 9/1/229/1/220.25 EPA 8260D/1311/5030AND1,1-Dichloroethylene, TCLP mg/L 9/1/229/1/220.25 EPA 8260D/1311/5030AND1,2-Dichloroethane, TCLP mg/L 9/1/229/1/220.25 EPA 8260D/1311/5030AND1,4-Dichlorobenzene, TCLP mg/L 9/1/229/1/220.25 EPA 8260D/1311/5030ANDBenzene, TCLP mg/L 9/1/229/1/220.25 EPA 8260D/1311/5030ANDCarbon Tetrachloride, TCLP mg/L 9/1/229/1/220.25 EPA 8260D/1311/5030ANDChlorobenzene, TCLP mg/L 9/1/229/1/220.25 EPA 8260D/1311/5030ANDChloroform, TCLP mg/L 9/1/229/1/220.25 EPA 8260D/1311/5030ANDHexachlorobutadiene, TCLP mg/L 9/1/229/1/222.50 EPA 8260D/1311/5030ANDMethyl Ethyl Ketone, TCLP mg/L 9/1/229/1/220.25 EPA 8260D/1311/5030ANDTetrachloroethylene, TCLP mg/L 9/1/229/1/220.25 EPA 8260D/1311/5030ANDTrichloroethylene, TCLP mg/L 9/1/229/1/220.20 EPA 8260D/1311/5030ANDVinyl Chloride, TCLP TCLP Semi-Volatile Compounds mg/L 9/1/229/1/220.10 EPA 8270E/1311/3511ND1,4-Dichlorobenzene mg/L 9/1/229/1/220.10 EPA 8270E/1311/3511ND2,4,5-Trichlorophenol mg/L 9/1/229/1/220.10 EPA 8270E/1311/3511ND2,4,6-Trichlorophenol mg/L 9/1/229/1/220.10 EPA 8270E/1311/3511ND2,4-Dinitrotoluene mg/L 9/1/229/1/220.10 EPA 8270E/1311/3511ND2-Methylphenol mg/L 9/1/229/1/220.10 EPA 8270E/1311/3511ND3 & 4-Methylphenol mg/L 9/1/229/1/220.10 EPA 8270E/1311/3511NDHexachlorobenzene mg/L 9/1/229/1/220.10 EPA 8270E/1311/3511NDHexachlorobutadiene mg/L 9/1/229/1/220.10 EPA 8270E/1311/3511NDHexachloroethane mg/L 9/1/229/1/220.10 EPA 8270E/1311/3511NDNitrobenzene mg/L 9/1/229/1/220.10 EPA 8270E/1311/3511NDPentachlorophenol mg/L 9/1/229/1/220.10 EPA 8270E/1311/3511NDPyridine Project Name: Recycled Earth CtF WO#: 22H2736 www.ChemtechFord.com Page 5 of 21Page 5 of 22 xx Chemtech-Ford Laboratories Serving the Intermountain West Since 1953 Certificate of Analysis 9632 South 500 West Sandy, UT 84070 O:(801) 262-7299 F: (866) 792-0093 www.ChemtechFord.com Clean Harbors - Environmental Services Anthony Cox 3589 W 500 S SLC, UT 84104 PO#: Receipt: Date Reported: Project Name: 8/29/22 11:50 @ 1.5 °C 9/8/2022 Recycled Earth Sample ID: Water #2 Lab ID: 22H2736-03Matrix: Water Flag(s)Units Analysis Date/Time Date Sampled: 8/27/22 10:55 Preparation Date/Time Sampled By: Anthony Cox Minimum Reporting Limit MethodResult Inorganic °F 9/1/229/1/2280.0 EPA 1010>200Flashpoint pH Units SPH8/29/22 16:388/29/22 16:090.1 SM 4500 H-B7.3pH TCLP Metals mg/L 9/2/229/2/220.50 EPA 6010BNDArsenic, TCLP mg/L 9/2/229/2/220.20 EPA 6010B0.34Barium, TCLP mg/L 9/2/229/2/220.050 EPA 6010BNDCadmium, TCLP mg/L 9/2/229/2/220.050 EPA 6010BNDChromium, TCLP mg/L 9/2/229/2/220.20 EPA 6010BNDLead, TCLP mg/L 9/2/229/2/220.0020 EPA 7470ANDMercury, TCLP mg/L 9/2/229/2/220.50 EPA 6010BNDSelenium, TCLP mg/L 9/2/229/2/220.05 EPA 6010BNDSilver, TCLP TCLP Herbicides mg/L 9/7/229/6/220.10 EPA 8321ND2,4-D, TCLP mg/L 9/7/229/6/220.10 EPA 8321ND2,4,5-TP (Silvex), TCLP PCBs ug/L 9/1/228/30/222.0 EPA 8082NDPCB-1260 ug/L 9/1/228/30/222.0 EPA 8082NDPCB-1254 ug/L 9/1/228/30/222.0 EPA 8082NDPCB-1248 ug/L 9/1/228/30/222.0 EPA 8082NDPCB-1242 ug/L 9/1/228/30/222.0 EPA 8082NDPCB-1232 ug/L 9/1/228/30/222.0 EPA 8082NDPCB-1221 ug/L 9/1/228/30/222.0 EPA 8082NDPCB-1016 ug/L 9/1/228/30/222.0 EPA 8082NDPCB-1268 TCLP Pesticides mg/L 9/8/229/7/220.005 EPA 8081A/1311NDChlordane, TCLP mg/L 9/8/229/7/220.0005 EPA 8081A/1311NDEndrin, TCLP mg/L 9/8/229/7/220.0005 EPA 8081A/1311NDHeptachlor, TCLP mg/L 9/8/229/7/220.0005 EPA 8081A/1311NDHeptachlor Epoxide, TCLP mg/L 9/8/229/7/220.0005 EPA 8081A/1311NDLindane, TCLP mg/L 9/8/229/7/220.005 EPA 8081A/1311NDMethoxychlor, TCLP mg/L 9/8/229/7/220.01 EPA 8081A/1311NDToxaphene, TCLP Gasoline Range mg/L 8/29/228/29/220.12 EPA 8260/624NDGasoline Range Organics Diesel Range mg/L 8/29/228/29/221.0 EPA 8015C/3510BNDDiesel Range Organics mg/L 8/29/228/29/221.0 EPA 8015 CNDOil Range Organics TCLP Volatile Organic Compounds Project Name: Recycled Earth CtF WO#: 22H2736 www.ChemtechFord.com Page 6 of 21Page 6 of 22 xx Chemtech-Ford Laboratories Serving the Intermountain West Since 1953 Certificate of Analysis 9632 South 500 West Sandy, UT 84070 O:(801) 262-7299 F: (866) 792-0093 www.ChemtechFord.com Clean Harbors - Environmental Services Anthony Cox 3589 W 500 S SLC, UT 84104 PO#: Receipt: Date Reported: Project Name: 8/29/22 11:50 @ 1.5 °C 9/8/2022 Recycled Earth Sample ID: Water #2 (cont.) Lab ID: 22H2736-03Matrix: Water Flag(s)Units Analysis Date/Time Date Sampled: 8/27/22 10:55 Preparation Date/Time Sampled By: Anthony Cox Minimum Reporting Limit MethodResult TCLP Volatile Organic Compounds (cont.) mg/L 9/1/229/1/220.25 EPA 8260D/1311/5030AND1,1-Dichloroethylene, TCLP mg/L 9/1/229/1/220.25 EPA 8260D/1311/5030AND1,2-Dichloroethane, TCLP mg/L 9/1/229/1/220.25 EPA 8260D/1311/5030AND1,4-Dichlorobenzene, TCLP mg/L 9/1/229/1/220.25 EPA 8260D/1311/5030ANDBenzene, TCLP mg/L 9/1/229/1/220.25 EPA 8260D/1311/5030ANDCarbon Tetrachloride, TCLP mg/L 9/1/229/1/220.25 EPA 8260D/1311/5030ANDChlorobenzene, TCLP mg/L 9/1/229/1/220.25 EPA 8260D/1311/5030ANDChloroform, TCLP mg/L 9/1/229/1/220.25 EPA 8260D/1311/5030ANDHexachlorobutadiene, TCLP mg/L 9/1/229/1/222.50 EPA 8260D/1311/5030ANDMethyl Ethyl Ketone, TCLP mg/L 9/1/229/1/220.25 EPA 8260D/1311/5030ANDTetrachloroethylene, TCLP mg/L 9/1/229/1/220.25 EPA 8260D/1311/5030ANDTrichloroethylene, TCLP mg/L 9/1/229/1/220.20 EPA 8260D/1311/5030ANDVinyl Chloride, TCLP TCLP Semi-Volatile Compounds mg/L 9/1/229/1/220.10 EPA 8270E/1311/3511ND1,4-Dichlorobenzene mg/L 9/1/229/1/220.10 EPA 8270E/1311/3511ND2,4,5-Trichlorophenol mg/L 9/1/229/1/220.10 EPA 8270E/1311/3511ND2,4,6-Trichlorophenol mg/L 9/1/229/1/220.10 EPA 8270E/1311/3511ND2,4-Dinitrotoluene mg/L 9/1/229/1/220.10 EPA 8270E/1311/3511ND2-Methylphenol mg/L 9/1/229/1/220.10 EPA 8270E/1311/3511ND3 & 4-Methylphenol mg/L 9/1/229/1/220.10 EPA 8270E/1311/3511NDHexachlorobenzene mg/L 9/1/229/1/220.10 EPA 8270E/1311/3511NDHexachlorobutadiene mg/L 9/1/229/1/220.10 EPA 8270E/1311/3511NDHexachloroethane mg/L 9/1/229/1/220.10 EPA 8270E/1311/3511NDNitrobenzene mg/L 9/1/229/1/220.10 EPA 8270E/1311/3511NDPentachlorophenol mg/L 9/1/229/1/220.10 EPA 8270E/1311/3511NDPyridine Project Name: Recycled Earth CtF WO#: 22H2736 www.ChemtechFord.com Page 7 of 21Page 7 of 22 xx Chemtech-Ford Laboratories Serving the Intermountain West Since 1953 Certificate of Analysis 9632 South 500 West Sandy, UT 84070 O:(801) 262-7299 F: (866) 792-0093 www.ChemtechFord.com Clean Harbors - Environmental Services Anthony Cox 3589 W 500 S SLC, UT 84104 PO#: Receipt: Date Reported: Project Name: 8/29/22 11:50 @ 1.5 °C 9/8/2022 Recycled Earth Sample ID: RRC Soil Lab ID: 22H2736-04Matrix: Solid Flag(s)Units Analysis Date/Time Date Sampled: 8/27/22 11:15 Preparation Date/Time Sampled By: Anthony Cox Minimum Reporting Limit MethodResult Inorganic °F 9/1/229/1/2280EPA 1010MOD>200Flashpoint pH Units 8/29/228/29/220.1 EPA 9045D6.9pH %8/30/228/29/220.1 EPA 8000C64.0Total Solids TCLP Metals mg/L 9/6/229/6/220.50 EPA 6010BNDArsenic, TCLP mg/L 9/6/229/6/220.20 EPA 6010B2.22Barium, TCLP mg/L 9/6/229/6/220.050 EPA 6010BNDCadmium, TCLP mg/L 9/6/229/6/220.050 EPA 6010BNDChromium, TCLP mg/L 9/6/229/6/220.20 EPA 6010B0.25Lead, TCLP mg/L 9/2/229/2/220.0020 EPA 7470ANDMercury, TCLP mg/L 9/6/229/6/220.50 EPA 6010BNDSelenium, TCLP mg/L 9/6/229/6/220.05 EPA 6010BNDSilver, TCLP TCLP Herbicides mg/L 9/7/229/6/220.10 EPA 8321ND2,4-D, TCLP mg/L 9/7/229/6/220.10 EPA 8321ND2,4,5-TP (Silvex), TCLP PCBs mg/kg dry 9/1/228/30/223.1 EPA 8082NDPCB-1260 mg/kg dry 9/1/228/30/223.1 EPA 8082NDPCB-1254 mg/kg dry 9/1/228/30/223.1 EPA 8082NDPCB-1248 mg/kg dry 9/1/228/30/223.1 EPA 8082NDPCB-1242 mg/kg dry 9/1/228/30/223.1 EPA 8082NDPCB-1232 mg/kg dry 9/1/228/30/223.1 EPA 8082NDPCB-1221 mg/kg dry 9/1/228/30/223.1 EPA 8082NDPCB-1016 mg/kg dry 9/1/228/30/223.1 EPA 8082NDPCB-1268 TCLP Pesticides mg/L 9/3/229/2/220.005 EPA 8081A/1311NDChlordane, TCLP mg/L 9/3/229/2/220.0005 EPA 8081A/1311NDEndrin, TCLP mg/L 9/3/229/2/220.0005 EPA 8081A/1311NDHeptachlor, TCLP mg/L 9/3/229/2/220.0005 EPA 8081A/1311NDHeptachlor Epoxide, TCLP mg/L 9/3/229/2/220.0005 EPA 8081A/1311NDLindane, TCLP mg/L 9/3/229/2/220.005 EPA 8081A/1311NDMethoxychlor, TCLP mg/L 9/3/229/2/220.01 EPA 8081A/1311NDToxaphene, TCLP Gasoline Range mg/kg dry 8/30/228/30/223.9 EPA 8260/624NDGasoline Range Organics Diesel Range mg/kg dry 9/1/228/31/2278EPA 8015C/3550B200Diesel Range Organics mg/kg dry 9/1/228/31/22781EPA 8015 CNDOil Range Organics Project Name: Recycled Earth CtF WO#: 22H2736 www.ChemtechFord.com Page 8 of 21Page 8 of 22 xx Chemtech-Ford Laboratories Serving the Intermountain West Since 1953 Certificate of Analysis 9632 South 500 West Sandy, UT 84070 O:(801) 262-7299 F: (866) 792-0093 www.ChemtechFord.com Clean Harbors - Environmental Services Anthony Cox 3589 W 500 S SLC, UT 84104 PO#: Receipt: Date Reported: Project Name: 8/29/22 11:50 @ 1.5 °C 9/8/2022 Recycled Earth Sample ID: RRC Soil (cont.) Lab ID: 22H2736-04Matrix: Solid Flag(s)Units Analysis Date/Time Date Sampled: 8/27/22 11:15 Preparation Date/Time Sampled By: Anthony Cox Minimum Reporting Limit MethodResult TCLP Volatile Organic Compounds mg/L 9/2/229/2/220.25 EPA 8260D/1311/5030AND1,1-Dichloroethylene, TCLP mg/L 9/2/229/2/220.25 EPA 8260D/1311/5030AND1,2-Dichloroethane, TCLP mg/L 9/2/229/2/220.25 EPA 8260D/1311/5030AND1,4-Dichlorobenzene, TCLP mg/L 9/2/229/2/220.25 EPA 8260D/1311/5030ANDBenzene, TCLP mg/L 9/2/229/2/220.25 EPA 8260D/1311/5030ANDCarbon Tetrachloride, TCLP mg/L 9/2/229/2/220.25 EPA 8260D/1311/5030ANDChlorobenzene, TCLP mg/L 9/2/229/2/220.25 EPA 8260D/1311/5030ANDChloroform, TCLP mg/L 9/2/229/2/220.25 EPA 8260D/1311/5030ANDHexachlorobutadiene, TCLP mg/L 9/2/229/2/222.50 EPA 8260D/1311/5030ANDMethyl Ethyl Ketone, TCLP mg/L 9/2/229/2/220.25 EPA 8260D/1311/5030ANDTetrachloroethylene, TCLP mg/L 9/2/229/2/220.25 EPA 8260D/1311/5030ANDTrichloroethylene, TCLP mg/L 9/2/229/2/220.20 EPA 8260D/1311/5030ANDVinyl Chloride, TCLP TCLP Semi-Volatile Compounds mg/L 9/6/229/6/220.10 EPA 8270E/1311/3511ND1,4-Dichlorobenzene mg/L 9/6/229/6/220.10 EPA 8270E/1311/3511ND2,4,5-Trichlorophenol mg/L 9/6/229/6/220.10 EPA 8270E/1311/3511ND2,4,6-Trichlorophenol mg/L 9/6/229/6/220.10 EPA 8270E/1311/3511ND2,4-Dinitrotoluene mg/L 9/6/229/6/220.10 EPA 8270E/1311/3511ND2-Methylphenol mg/L 9/6/229/6/220.10 EPA 8270E/1311/3511ND3 & 4-Methylphenol mg/L 9/6/229/6/220.10 EPA 8270E/1311/3511NDHexachlorobenzene mg/L 9/6/229/6/220.10 EPA 8270E/1311/3511NDHexachlorobutadiene mg/L 9/6/229/6/220.10 EPA 8270E/1311/3511NDHexachloroethane mg/L 9/6/229/6/220.10 EPA 8270E/1311/3511NDNitrobenzene mg/L 9/6/229/6/220.10 EPA 8270E/1311/3511NDPentachlorophenol mg/L 9/6/229/6/220.10 EPA 8270E/1311/3511NDPyridine Project Name: Recycled Earth CtF WO#: 22H2736 www.ChemtechFord.com Page 9 of 21Page 9 of 22 xx Chemtech-Ford Laboratories Serving the Intermountain West Since 1953 Certificate of Analysis 9632 South 500 West Sandy, UT 84070 O:(801) 262-7299 F: (866) 792-0093 www.ChemtechFord.com Clean Harbors - Environmental Services Anthony Cox 3589 W 500 S SLC, UT 84104 PO#: Receipt: Date Reported: Project Name: 8/29/22 11:50 @ 1.5 °C 9/8/2022 Recycled Earth Sample ID: RRC Water Lab ID: 22H2736-05Matrix: Water Flag(s)Units Analysis Date/Time Date Sampled: 8/27/22 11:20 Preparation Date/Time Sampled By: Anthony Cox Minimum Reporting Limit MethodResult Inorganic °F 9/1/229/1/2280.0 EPA 1010>200Flashpoint pH Units SPH8/29/22 16:428/29/22 16:090.1 SM 4500 H-B7.6pH TCLP Metals mg/L 9/2/229/2/220.50 EPA 6010BNDArsenic, TCLP mg/L 9/2/229/2/220.20 EPA 6010B0.35Barium, TCLP mg/L 9/2/229/2/220.050 EPA 6010BNDCadmium, TCLP mg/L 9/2/229/2/220.050 EPA 6010BNDChromium, TCLP mg/L 9/2/229/2/220.20 EPA 6010BNDLead, TCLP mg/L 9/2/229/2/220.0020 EPA 7470ANDMercury, TCLP mg/L 9/2/229/2/220.50 EPA 6010BNDSelenium, TCLP mg/L 9/2/229/2/220.05 EPA 6010BNDSilver, TCLP TCLP Herbicides mg/L 9/7/229/6/220.10 EPA 8321ND2,4-D, TCLP mg/L 9/7/229/6/220.10 EPA 8321ND2,4,5-TP (Silvex), TCLP PCBs ug/L 9/1/228/30/222.0 EPA 8082NDPCB-1260 ug/L 9/1/228/30/222.0 EPA 8082NDPCB-1254 ug/L 9/1/228/30/222.0 EPA 8082NDPCB-1248 ug/L 9/1/228/30/222.0 EPA 8082NDPCB-1242 ug/L 9/1/228/30/222.0 EPA 8082NDPCB-1232 ug/L 9/1/228/30/222.0 EPA 8082NDPCB-1221 ug/L 9/1/228/30/222.0 EPA 8082NDPCB-1016 ug/L 9/1/228/30/222.0 EPA 8082NDPCB-1268 TCLP Pesticides mg/L 9/3/229/2/220.005 EPA 8081A/1311NDChlordane, TCLP mg/L 9/3/229/2/220.0005 EPA 8081A/1311NDEndrin, TCLP mg/L 9/3/229/2/220.0005 EPA 8081A/1311NDHeptachlor, TCLP mg/L 9/3/229/2/220.0005 EPA 8081A/1311NDHeptachlor Epoxide, TCLP mg/L 9/3/229/2/220.0005 EPA 8081A/1311NDLindane, TCLP mg/L 9/3/229/2/220.005 EPA 8081A/1311NDMethoxychlor, TCLP mg/L 9/3/229/2/220.01 EPA 8081A/1311NDToxaphene, TCLP Gasoline Range mg/L 8/29/228/29/220.12 EPA 8260/624NDGasoline Range Organics Diesel Range mg/L 8/29/228/29/221.0 EPA 8015C/3510BNDDiesel Range Organics mg/L 8/29/228/29/221.0 EPA 8015 CNDOil Range Organics TCLP Volatile Organic Compounds Project Name: Recycled Earth CtF WO#: 22H2736 www.ChemtechFord.com Page 10 of 21Page 10 of 22 xx Chemtech-Ford Laboratories Serving the Intermountain West Since 1953 Certificate of Analysis 9632 South 500 West Sandy, UT 84070 O:(801) 262-7299 F: (866) 792-0093 www.ChemtechFord.com Clean Harbors - Environmental Services Anthony Cox 3589 W 500 S SLC, UT 84104 PO#: Receipt: Date Reported: Project Name: 8/29/22 11:50 @ 1.5 °C 9/8/2022 Recycled Earth Sample ID: RRC Water (cont.) Lab ID: 22H2736-05Matrix: Water Flag(s)Units Analysis Date/Time Date Sampled: 8/27/22 11:20 Preparation Date/Time Sampled By: Anthony Cox Minimum Reporting Limit MethodResult TCLP Volatile Organic Compounds (cont.) mg/L 9/1/229/1/220.25 EPA 8260D/1311/5030AND1,1-Dichloroethylene, TCLP mg/L 9/1/229/1/220.25 EPA 8260D/1311/5030AND1,2-Dichloroethane, TCLP mg/L 9/1/229/1/220.25 EPA 8260D/1311/5030AND1,4-Dichlorobenzene, TCLP mg/L 9/1/229/1/220.25 EPA 8260D/1311/5030ANDBenzene, TCLP mg/L 9/1/229/1/220.25 EPA 8260D/1311/5030ANDCarbon Tetrachloride, TCLP mg/L 9/1/229/1/220.25 EPA 8260D/1311/5030ANDChlorobenzene, TCLP mg/L 9/1/229/1/220.25 EPA 8260D/1311/5030ANDChloroform, TCLP mg/L 9/1/229/1/220.25 EPA 8260D/1311/5030ANDHexachlorobutadiene, TCLP mg/L 9/1/229/1/222.50 EPA 8260D/1311/5030ANDMethyl Ethyl Ketone, TCLP mg/L 9/1/229/1/220.25 EPA 8260D/1311/5030ANDTetrachloroethylene, TCLP mg/L 9/1/229/1/220.25 EPA 8260D/1311/5030ANDTrichloroethylene, TCLP mg/L 9/1/229/1/220.20 EPA 8260D/1311/5030ANDVinyl Chloride, TCLP TCLP Semi-Volatile Compounds mg/L 9/1/229/1/220.10 EPA 8270E/1311/3511ND1,4-Dichlorobenzene mg/L 9/1/229/1/220.10 EPA 8270E/1311/3511ND2,4,5-Trichlorophenol mg/L 9/1/229/1/220.10 EPA 8270E/1311/3511ND2,4,6-Trichlorophenol mg/L 9/1/229/1/220.10 EPA 8270E/1311/3511ND2,4-Dinitrotoluene mg/L 9/1/229/1/220.10 EPA 8270E/1311/3511ND2-Methylphenol mg/L 9/1/229/1/220.10 EPA 8270E/1311/3511ND3 & 4-Methylphenol mg/L 9/1/229/1/220.10 EPA 8270E/1311/3511NDHexachlorobenzene mg/L 9/1/229/1/220.10 EPA 8270E/1311/3511NDHexachlorobutadiene mg/L 9/1/229/1/220.10 EPA 8270E/1311/3511NDHexachloroethane mg/L 9/1/229/1/220.10 EPA 8270E/1311/3511NDNitrobenzene mg/L 9/1/229/1/220.10 EPA 8270E/1311/3511NDPentachlorophenol mg/L 9/1/229/1/220.10 EPA 8270E/1311/3511NDPyridine Project Name: Recycled Earth CtF WO#: 22H2736 www.ChemtechFord.com Page 11 of 21Page 11 of 22 xx Chemtech-Ford Laboratories Serving the Intermountain West Since 1953 Certificate of Analysis 9632 South 500 West Sandy, UT 84070 O:(801) 262-7299 F: (866) 792-0093 www.ChemtechFord.com Clean Harbors - Environmental Services Anthony Cox 3589 W 500 S SLC, UT 84104 PO#: Receipt: Date Reported: Project Name: 8/29/22 11:50 @ 1.5 °C 9/8/2022 Recycled Earth Sample ID: WC Water Lab ID: 22H2736-06Matrix: Water Flag(s)Units Analysis Date/Time Date Sampled: 8/27/22 11:30 Preparation Date/Time Sampled By: Anthony Cox Minimum Reporting Limit MethodResult Inorganic °F 9/1/229/1/2280.0 EPA 1010>200Flashpoint pH Units SPH8/29/22 16:448/29/22 16:090.1 SM 4500 H-B7.1pH TCLP Metals mg/L 9/2/229/2/220.50 EPA 6010BNDArsenic, TCLP mg/L 9/2/229/2/220.20 EPA 6010B0.28Barium, TCLP mg/L 9/2/229/2/220.050 EPA 6010BNDCadmium, TCLP mg/L 9/2/229/2/220.050 EPA 6010BNDChromium, TCLP mg/L 9/2/229/2/220.20 EPA 6010BNDLead, TCLP mg/L 9/2/229/2/220.0020 EPA 7470ANDMercury, TCLP mg/L 9/2/229/2/220.50 EPA 6010BNDSelenium, TCLP mg/L 9/2/229/2/220.05 EPA 6010BNDSilver, TCLP TCLP Herbicides mg/L 9/7/229/6/220.10 EPA 8321ND2,4-D, TCLP mg/L 9/7/229/6/220.10 EPA 8321ND2,4,5-TP (Silvex), TCLP PCBs ug/L 9/1/228/30/2220.0 EPA 8082NDPCB-1260 ug/L 9/1/228/30/2220.0 EPA 8082NDPCB-1254 ug/L 9/1/228/30/2220.0 EPA 8082NDPCB-1248 ug/L 9/1/228/30/2220.0 EPA 8082NDPCB-1242 ug/L 9/1/228/30/2220.0 EPA 8082NDPCB-1232 ug/L 9/1/228/30/2220.0 EPA 8082NDPCB-1221 ug/L 9/1/228/30/2220.0 EPA 8082NDPCB-1016 ug/L 9/1/228/30/2220.0 EPA 8082NDPCB-1268 TCLP Pesticides mg/L 9/8/229/7/220.005 EPA 8081A/1311NDChlordane, TCLP mg/L 9/8/229/7/220.0005 EPA 8081A/1311NDEndrin, TCLP mg/L 9/8/229/7/220.0005 EPA 8081A/1311NDHeptachlor, TCLP mg/L 9/8/229/7/220.0005 EPA 8081A/1311NDHeptachlor Epoxide, TCLP mg/L 9/8/229/7/220.0005 EPA 8081A/1311NDLindane, TCLP mg/L 9/8/229/7/220.005 EPA 8081A/1311NDMethoxychlor, TCLP mg/L 9/8/229/7/220.01 EPA 8081A/1311NDToxaphene, TCLP Gasoline Range mg/L 8/29/228/29/220.12 EPA 8260/624NDGasoline Range Organics Diesel Range mg/L 8/29/228/29/2210.0 EPA 8015C/3510B183Diesel Range Organics mg/L 8/29/228/29/2210.0 EPA 8015 C186Oil Range Organics TCLP Volatile Organic Compounds Project Name: Recycled Earth CtF WO#: 22H2736 www.ChemtechFord.com Page 12 of 21Page 12 of 22 xx Chemtech-Ford Laboratories Serving the Intermountain West Since 1953 Certificate of Analysis 9632 South 500 West Sandy, UT 84070 O:(801) 262-7299 F: (866) 792-0093 www.ChemtechFord.com Clean Harbors - Environmental Services Anthony Cox 3589 W 500 S SLC, UT 84104 PO#: Receipt: Date Reported: Project Name: 8/29/22 11:50 @ 1.5 °C 9/8/2022 Recycled Earth Sample ID: WC Water (cont.) Lab ID: 22H2736-06Matrix: Water Flag(s)Units Analysis Date/Time Date Sampled: 8/27/22 11:30 Preparation Date/Time Sampled By: Anthony Cox Minimum Reporting Limit MethodResult TCLP Volatile Organic Compounds (cont.) mg/L 9/1/229/1/220.25 EPA 8260D/1311/5030AND1,1-Dichloroethylene, TCLP mg/L 9/1/229/1/220.25 EPA 8260D/1311/5030AND1,2-Dichloroethane, TCLP mg/L 9/1/229/1/220.25 EPA 8260D/1311/5030AND1,4-Dichlorobenzene, TCLP mg/L 9/1/229/1/220.25 EPA 8260D/1311/5030ANDBenzene, TCLP mg/L 9/1/229/1/220.25 EPA 8260D/1311/5030ANDCarbon Tetrachloride, TCLP mg/L 9/1/229/1/220.25 EPA 8260D/1311/5030ANDChlorobenzene, TCLP mg/L 9/1/229/1/220.25 EPA 8260D/1311/5030ANDChloroform, TCLP mg/L 9/1/229/1/220.25 EPA 8260D/1311/5030ANDHexachlorobutadiene, TCLP mg/L 9/1/229/1/222.50 EPA 8260D/1311/5030ANDMethyl Ethyl Ketone, TCLP mg/L 9/1/229/1/220.25 EPA 8260D/1311/5030ANDTetrachloroethylene, TCLP mg/L 9/1/229/1/220.25 EPA 8260D/1311/5030ANDTrichloroethylene, TCLP mg/L 9/1/229/1/220.20 EPA 8260D/1311/5030ANDVinyl Chloride, TCLP TCLP Semi-Volatile Compounds mg/L 9/1/229/1/220.10 EPA 8270E/1311/3511ND1,4-Dichlorobenzene mg/L 9/1/229/1/220.10 EPA 8270E/1311/3511ND2,4,5-Trichlorophenol mg/L 9/1/229/1/220.10 EPA 8270E/1311/3511ND2,4,6-Trichlorophenol mg/L 9/1/229/1/220.10 EPA 8270E/1311/3511ND2,4-Dinitrotoluene mg/L 9/1/229/1/220.10 EPA 8270E/1311/3511ND2-Methylphenol mg/L 9/1/229/1/220.10 EPA 8270E/1311/3511ND3 & 4-Methylphenol mg/L 9/1/229/1/220.10 EPA 8270E/1311/3511NDHexachlorobenzene mg/L 9/1/229/1/220.10 EPA 8270E/1311/3511NDHexachlorobutadiene mg/L 9/1/229/1/220.10 EPA 8270E/1311/3511NDHexachloroethane mg/L 9/1/229/1/220.10 EPA 8270E/1311/3511NDNitrobenzene mg/L 9/1/229/1/220.10 EPA 8270E/1311/3511NDPentachlorophenol mg/L 9/1/229/1/220.10 EPA 8270E/1311/3511NDPyridine Project Name: Recycled Earth CtF WO#: 22H2736 www.ChemtechFord.com Page 13 of 21Page 13 of 22 xx Chemtech-Ford Laboratories Serving the Intermountain West Since 1953 Certificate of Analysis 9632 South 500 West Sandy, UT 84070 O:(801) 262-7299 F: (866) 792-0093 www.ChemtechFord.com Clean Harbors - Environmental Services Anthony Cox 3589 W 500 S SLC, UT 84104 PO#: Receipt: Date Reported: Project Name: 8/29/22 11:50 @ 1.5 °C 9/8/2022 Recycled Earth Sample ID: WC Soil Lab ID: 22H2736-07Matrix: Solid Flag(s)Units Analysis Date/Time Date Sampled: 8/27/22 11:35 Preparation Date/Time Sampled By: Anthony Cox Minimum Reporting Limit MethodResult Inorganic °F 9/1/229/1/2280EPA 1010MOD>200Flashpoint pH Units 8/29/228/29/220.1 EPA 9045D7.2pH %8/30/228/29/220.1 EPA 8000C73.6Total Solids TCLP Metals mg/L 9/6/229/6/220.50 EPA 6010BNDArsenic, TCLP mg/L 9/6/229/6/220.20 EPA 6010B0.93Barium, TCLP mg/L 9/6/229/6/220.050 EPA 6010BNDCadmium, TCLP mg/L 9/6/229/6/220.050 EPA 6010BNDChromium, TCLP mg/L 9/6/229/6/220.20 EPA 6010BNDLead, TCLP mg/L 9/2/229/2/220.0020 EPA 7470ANDMercury, TCLP mg/L 9/6/229/6/220.50 EPA 6010BNDSelenium, TCLP mg/L 9/6/229/6/220.05 EPA 6010BNDSilver, TCLP TCLP Herbicides mg/L 9/7/229/6/220.10 EPA 8321ND2,4-D, TCLP mg/L 9/7/229/6/220.10 EPA 8321ND2,4,5-TP (Silvex), TCLP PCBs mg/kg dry 9/1/228/30/222.7 EPA 8082NDPCB-1260 mg/kg dry 9/1/228/30/222.7 EPA 8082NDPCB-1254 mg/kg dry 9/1/228/30/222.7 EPA 8082NDPCB-1248 mg/kg dry 9/1/228/30/222.7 EPA 8082NDPCB-1242 mg/kg dry 9/1/228/30/222.7 EPA 8082NDPCB-1232 mg/kg dry 9/1/228/30/222.7 EPA 8082NDPCB-1221 mg/kg dry 9/1/228/30/222.7 EPA 8082NDPCB-1016 mg/kg dry 9/1/228/30/222.7 EPA 8082NDPCB-1268 TCLP Pesticides mg/L 9/3/229/2/220.005 EPA 8081A/1311NDChlordane, TCLP mg/L 9/3/229/2/220.0005 EPA 8081A/1311NDEndrin, TCLP mg/L 9/3/229/2/220.0005 EPA 8081A/1311NDHeptachlor, TCLP mg/L 9/3/229/2/220.0005 EPA 8081A/1311NDHeptachlor Epoxide, TCLP mg/L 9/3/229/2/220.0005 EPA 8081A/1311NDLindane, TCLP mg/L 9/3/229/2/220.005 EPA 8081A/1311NDMethoxychlor, TCLP mg/L 9/3/229/2/220.01 EPA 8081A/1311NDToxaphene, TCLP Gasoline Range mg/kg dry 8/30/228/30/223.4 EPA 8260/624NDGasoline Range Organics Diesel Range mg/kg dry 9/1/228/31/2268EPA 8015C/3550B1610Diesel Range Organics mg/kg dry 9/1/228/31/22679EPA 8015 C1610Oil Range Organics Project Name: Recycled Earth CtF WO#: 22H2736 www.ChemtechFord.com Page 14 of 21Page 14 of 22 xx Chemtech-Ford Laboratories Serving the Intermountain West Since 1953 Certificate of Analysis 9632 South 500 West Sandy, UT 84070 O:(801) 262-7299 F: (866) 792-0093 www.ChemtechFord.com Clean Harbors - Environmental Services Anthony Cox 3589 W 500 S SLC, UT 84104 PO#: Receipt: Date Reported: Project Name: 8/29/22 11:50 @ 1.5 °C 9/8/2022 Recycled Earth Sample ID: WC Soil (cont.) Lab ID: 22H2736-07Matrix: Solid Flag(s)Units Analysis Date/Time Date Sampled: 8/27/22 11:35 Preparation Date/Time Sampled By: Anthony Cox Minimum Reporting Limit MethodResult TCLP Volatile Organic Compounds mg/L 9/2/229/2/220.25 EPA 8260D/1311/5030AND1,1-Dichloroethylene, TCLP mg/L 9/2/229/2/220.25 EPA 8260D/1311/5030AND1,2-Dichloroethane, TCLP mg/L 9/2/229/2/220.25 EPA 8260D/1311/5030AND1,4-Dichlorobenzene, TCLP mg/L 9/2/229/2/220.25 EPA 8260D/1311/5030ANDBenzene, TCLP mg/L 9/2/229/2/220.25 EPA 8260D/1311/5030ANDCarbon Tetrachloride, TCLP mg/L 9/2/229/2/220.25 EPA 8260D/1311/5030ANDChlorobenzene, TCLP mg/L 9/2/229/2/220.25 EPA 8260D/1311/5030ANDChloroform, TCLP mg/L 9/2/229/2/220.25 EPA 8260D/1311/5030ANDHexachlorobutadiene, TCLP mg/L 9/2/229/2/222.50 EPA 8260D/1311/5030ANDMethyl Ethyl Ketone, TCLP mg/L 9/2/229/2/220.25 EPA 8260D/1311/5030ANDTetrachloroethylene, TCLP mg/L 9/2/229/2/220.25 EPA 8260D/1311/5030ANDTrichloroethylene, TCLP mg/L 9/2/229/2/220.20 EPA 8260D/1311/5030ANDVinyl Chloride, TCLP TCLP Semi-Volatile Compounds mg/L 9/6/229/6/220.10 EPA 8270E/1311/3511ND1,4-Dichlorobenzene mg/L 9/6/229/6/220.10 EPA 8270E/1311/3511ND2,4,5-Trichlorophenol mg/L 9/6/229/6/220.10 EPA 8270E/1311/3511ND2,4,6-Trichlorophenol mg/L 9/6/229/6/220.10 EPA 8270E/1311/3511ND2,4-Dinitrotoluene mg/L 9/6/229/6/220.10 EPA 8270E/1311/3511ND2-Methylphenol mg/L 9/6/229/6/220.10 EPA 8270E/1311/3511ND3 & 4-Methylphenol mg/L 9/6/229/6/220.10 EPA 8270E/1311/3511NDHexachlorobenzene mg/L 9/6/229/6/220.10 EPA 8270E/1311/3511NDHexachlorobutadiene mg/L 9/6/229/6/220.10 EPA 8270E/1311/3511NDHexachloroethane mg/L 9/6/229/6/220.10 EPA 8270E/1311/3511NDNitrobenzene mg/L 9/6/229/6/220.10 EPA 8270E/1311/3511NDPentachlorophenol mg/L 9/6/229/6/220.10 EPA 8270E/1311/3511NDPyridine Project Name: Recycled Earth CtF WO#: 22H2736 www.ChemtechFord.com Page 15 of 21Page 15 of 22 xx Chemtech-Ford Laboratories Serving the Intermountain West Since 1953 Certificate of Analysis 9632 South 500 West Sandy, UT 84070 O:(801) 262-7299 F: (866) 792-0093 www.ChemtechFord.com Clean Harbors - Environmental Services Anthony Cox 3589 W 500 S SLC, UT 84104 PO#: Receipt: Date Reported: Project Name: 8/29/22 11:50 @ 1.5 °C 9/8/2022 Recycled Earth Sample ID: WC Base Water Lab ID: 22H2736-08Matrix: Water Flag(s)Units Analysis Date/Time Date Sampled: 8/27/22 11:45 Preparation Date/Time Sampled By: Anthony Cox Minimum Reporting Limit MethodResult Inorganic °F 9/2/229/2/2280.0 EPA 1010>200Flashpoint pH Units SPH8/29/22 16:458/29/22 16:090.1 SM 4500 H-B7.9pH TCLP Metals mg/L 9/2/229/2/220.50 EPA 6010BNDArsenic, TCLP mg/L 9/2/229/2/220.20 EPA 6010BNDBarium, TCLP mg/L 9/2/229/2/220.050 EPA 6010BNDCadmium, TCLP mg/L 9/2/229/2/220.050 EPA 6010BNDChromium, TCLP mg/L 9/2/229/2/220.20 EPA 6010BNDLead, TCLP mg/L 9/2/229/2/220.0020 EPA 7470ANDMercury, TCLP mg/L 9/2/229/2/220.50 EPA 6010BNDSelenium, TCLP mg/L 9/2/229/2/220.05 EPA 6010BNDSilver, TCLP TCLP Herbicides mg/L 9/7/229/6/220.10 EPA 8321ND2,4-D, TCLP mg/L 9/7/229/6/220.10 EPA 8321ND2,4,5-TP (Silvex), TCLP PCBs ug/L 9/1/228/30/222.0 EPA 8082NDPCB-1260 ug/L 9/1/228/30/222.0 EPA 8082NDPCB-1254 ug/L 9/1/228/30/222.0 EPA 8082NDPCB-1248 ug/L 9/1/228/30/222.0 EPA 8082NDPCB-1242 ug/L 9/1/228/30/222.0 EPA 8082NDPCB-1232 ug/L 9/1/228/30/222.0 EPA 8082NDPCB-1221 ug/L 9/1/228/30/222.0 EPA 8082NDPCB-1016 ug/L 9/1/228/30/222.0 EPA 8082NDPCB-1268 TCLP Pesticides mg/L 9/3/229/2/220.005 EPA 8081A/1311NDChlordane, TCLP mg/L 9/3/229/2/220.0005 EPA 8081A/1311NDEndrin, TCLP mg/L 9/3/229/2/220.0005 EPA 8081A/1311NDHeptachlor, TCLP mg/L 9/3/229/2/220.0005 EPA 8081A/1311NDHeptachlor Epoxide, TCLP mg/L 9/3/229/2/220.0005 EPA 8081A/1311NDLindane, TCLP mg/L 9/3/229/2/220.005 EPA 8081A/1311NDMethoxychlor, TCLP mg/L 9/3/229/2/220.01 EPA 8081A/1311NDToxaphene, TCLP Gasoline Range mg/L 8/29/228/29/220.12 EPA 8260/624NDGasoline Range Organics Diesel Range mg/L 8/29/228/29/221.0 EPA 8015C/3510BNDDiesel Range Organics mg/L 8/29/228/29/221.0 EPA 8015 CNDOil Range Organics TCLP Volatile Organic Compounds Project Name: Recycled Earth CtF WO#: 22H2736 www.ChemtechFord.com Page 16 of 21Page 16 of 22 xx Chemtech-Ford Laboratories Serving the Intermountain West Since 1953 Certificate of Analysis 9632 South 500 West Sandy, UT 84070 O:(801) 262-7299 F: (866) 792-0093 www.ChemtechFord.com Clean Harbors - Environmental Services Anthony Cox 3589 W 500 S SLC, UT 84104 PO#: Receipt: Date Reported: Project Name: 8/29/22 11:50 @ 1.5 °C 9/8/2022 Recycled Earth Sample ID: WC Base Water (cont.) Lab ID: 22H2736-08Matrix: Water Flag(s)Units Analysis Date/Time Date Sampled: 8/27/22 11:45 Preparation Date/Time Sampled By: Anthony Cox Minimum Reporting Limit MethodResult TCLP Volatile Organic Compounds (cont.) mg/L 9/1/229/1/220.25 EPA 8260D/1311/5030AND1,1-Dichloroethylene, TCLP mg/L 9/1/229/1/220.25 EPA 8260D/1311/5030AND1,2-Dichloroethane, TCLP mg/L 9/1/229/1/220.25 EPA 8260D/1311/5030AND1,4-Dichlorobenzene, TCLP mg/L 9/1/229/1/220.25 EPA 8260D/1311/5030ANDBenzene, TCLP mg/L 9/1/229/1/220.25 EPA 8260D/1311/5030ANDCarbon Tetrachloride, TCLP mg/L 9/1/229/1/220.25 EPA 8260D/1311/5030ANDChlorobenzene, TCLP mg/L 9/1/229/1/220.25 EPA 8260D/1311/5030ANDChloroform, TCLP mg/L 9/1/229/1/220.25 EPA 8260D/1311/5030ANDHexachlorobutadiene, TCLP mg/L 9/1/229/1/222.50 EPA 8260D/1311/5030ANDMethyl Ethyl Ketone, TCLP mg/L 9/1/229/1/220.25 EPA 8260D/1311/5030ANDTetrachloroethylene, TCLP mg/L 9/1/229/1/220.25 EPA 8260D/1311/5030ANDTrichloroethylene, TCLP mg/L 9/1/229/1/220.20 EPA 8260D/1311/5030ANDVinyl Chloride, TCLP TCLP Semi-Volatile Compounds mg/L 9/1/229/1/220.10 EPA 8270E/1311/3511ND1,4-Dichlorobenzene mg/L 9/1/229/1/220.10 EPA 8270E/1311/3511ND2,4,5-Trichlorophenol mg/L 9/1/229/1/220.10 EPA 8270E/1311/3511ND2,4,6-Trichlorophenol mg/L 9/1/229/1/220.10 EPA 8270E/1311/3511ND2,4-Dinitrotoluene mg/L 9/1/229/1/220.10 EPA 8270E/1311/3511ND2-Methylphenol mg/L 9/1/229/1/220.10 EPA 8270E/1311/3511ND3 & 4-Methylphenol mg/L 9/1/229/1/220.10 EPA 8270E/1311/3511NDHexachlorobenzene mg/L 9/1/229/1/220.10 EPA 8270E/1311/3511NDHexachlorobutadiene mg/L 9/1/229/1/220.10 EPA 8270E/1311/3511NDHexachloroethane mg/L 9/1/229/1/220.10 EPA 8270E/1311/3511NDNitrobenzene mg/L 9/1/229/1/220.10 EPA 8270E/1311/3511NDPentachlorophenol mg/L 9/1/229/1/220.10 EPA 8270E/1311/3511NDPyridine Project Name: Recycled Earth CtF WO#: 22H2736 www.ChemtechFord.com Page 17 of 21Page 17 of 22 xx Chemtech-Ford Laboratories Serving the Intermountain West Since 1953 Certificate of Analysis 9632 South 500 West Sandy, UT 84070 O:(801) 262-7299 F: (866) 792-0093 www.ChemtechFord.com Clean Harbors - Environmental Services Anthony Cox 3589 W 500 S SLC, UT 84104 PO#: Receipt: Date Reported: Project Name: 8/29/22 11:50 @ 1.5 °C 9/8/2022 Recycled Earth Sample ID: WC Base Soil Lab ID: 22H2736-09Matrix: Solid Flag(s)Units Analysis Date/Time Date Sampled: 8/27/22 11:45 Preparation Date/Time Sampled By: Anthony Cox Minimum Reporting Limit MethodResult Inorganic °F 9/2/229/2/2280EPA 1010MOD>200Flashpoint pH Units 8/29/228/29/220.1 EPA 9045D7.2pH %8/30/228/29/220.1 EPA 8000C55.3Total Solids TCLP Metals mg/L 9/6/229/6/220.50 EPA 6010BNDArsenic, TCLP mg/L 9/6/229/6/220.20 EPA 6010B1.07Barium, TCLP mg/L 9/6/229/6/220.050 EPA 6010BNDCadmium, TCLP mg/L 9/6/229/6/220.050 EPA 6010BNDChromium, TCLP mg/L 9/6/229/6/220.20 EPA 6010BNDLead, TCLP mg/L 9/2/229/2/220.0020 EPA 7470ANDMercury, TCLP mg/L 9/6/229/6/220.50 EPA 6010BNDSelenium, TCLP mg/L 9/6/229/6/220.05 EPA 6010BNDSilver, TCLP TCLP Herbicides mg/L 9/7/229/6/220.10 EPA 8321ND2,4-D, TCLP mg/L 9/7/229/6/220.10 EPA 8321ND2,4,5-TP (Silvex), TCLP PCBs mg/kg dry 9/1/228/30/223.6 EPA 8082NDPCB-1260 mg/kg dry 9/1/228/30/223.6 EPA 8082NDPCB-1254 mg/kg dry 9/1/228/30/223.6 EPA 8082NDPCB-1248 mg/kg dry 9/1/228/30/223.6 EPA 8082NDPCB-1242 mg/kg dry 9/1/228/30/223.6 EPA 8082NDPCB-1232 mg/kg dry 9/1/228/30/223.6 EPA 8082NDPCB-1221 mg/kg dry 9/1/228/30/223.6 EPA 8082NDPCB-1016 mg/kg dry 9/1/228/30/223.6 EPA 8082NDPCB-1268 TCLP Pesticides mg/L 9/3/229/2/220.005 EPA 8081A/1311NDChlordane, TCLP mg/L 9/3/229/2/220.0005 EPA 8081A/1311NDEndrin, TCLP mg/L 9/3/229/2/220.0005 EPA 8081A/1311NDHeptachlor, TCLP mg/L 9/3/229/2/220.0005 EPA 8081A/1311NDHeptachlor Epoxide, TCLP mg/L 9/3/229/2/220.0005 EPA 8081A/1311NDLindane, TCLP mg/L 9/3/229/2/220.005 EPA 8081A/1311NDMethoxychlor, TCLP mg/L 9/3/229/2/220.01 EPA 8081A/1311NDToxaphene, TCLP Gasoline Range mg/kg dry 8/30/228/30/224.5 EPA 8260/624NDGasoline Range Organics Diesel Range mg/kg dry 8/31/228/31/2290EPA 8015C/3550BNDDiesel Range Organics mg/kg dry 8/31/228/31/22904EPA 8015 CNDOil Range Organics Project Name: Recycled Earth CtF WO#: 22H2736 www.ChemtechFord.com Page 18 of 21Page 18 of 22 xx Chemtech-Ford Laboratories Serving the Intermountain West Since 1953 Certificate of Analysis 9632 South 500 West Sandy, UT 84070 O:(801) 262-7299 F: (866) 792-0093 www.ChemtechFord.com Clean Harbors - Environmental Services Anthony Cox 3589 W 500 S SLC, UT 84104 PO#: Receipt: Date Reported: Project Name: 8/29/22 11:50 @ 1.5 °C 9/8/2022 Recycled Earth Sample ID: WC Base Soil (cont.) Lab ID: 22H2736-09Matrix: Solid Flag(s)Units Analysis Date/Time Date Sampled: 8/27/22 11:45 Preparation Date/Time Sampled By: Anthony Cox Minimum Reporting Limit MethodResult TCLP Volatile Organic Compounds mg/L 9/2/229/2/220.25 EPA 8260D/1311/5030AND1,1-Dichloroethylene, TCLP mg/L 9/2/229/2/220.25 EPA 8260D/1311/5030AND1,2-Dichloroethane, TCLP mg/L 9/2/229/2/220.25 EPA 8260D/1311/5030AND1,4-Dichlorobenzene, TCLP mg/L 9/2/229/2/220.25 EPA 8260D/1311/5030ANDBenzene, TCLP mg/L 9/2/229/2/220.25 EPA 8260D/1311/5030ANDCarbon Tetrachloride, TCLP mg/L 9/2/229/2/220.25 EPA 8260D/1311/5030ANDChlorobenzene, TCLP mg/L 9/2/229/2/220.25 EPA 8260D/1311/5030ANDChloroform, TCLP mg/L 9/2/229/2/220.25 EPA 8260D/1311/5030ANDHexachlorobutadiene, TCLP mg/L 9/2/229/2/222.50 EPA 8260D/1311/5030ANDMethyl Ethyl Ketone, TCLP mg/L 9/2/229/2/220.25 EPA 8260D/1311/5030ANDTetrachloroethylene, TCLP mg/L 9/2/229/2/220.25 EPA 8260D/1311/5030ANDTrichloroethylene, TCLP mg/L 9/2/229/2/220.20 EPA 8260D/1311/5030ANDVinyl Chloride, TCLP TCLP Semi-Volatile Compounds mg/L 9/6/229/6/220.10 EPA 8270E/1311/3511ND1,4-Dichlorobenzene mg/L 9/6/229/6/220.10 EPA 8270E/1311/3511ND2,4,5-Trichlorophenol mg/L 9/6/229/6/220.10 EPA 8270E/1311/3511ND2,4,6-Trichlorophenol mg/L 9/6/229/6/220.10 EPA 8270E/1311/3511ND2,4-Dinitrotoluene mg/L 9/6/229/6/220.10 EPA 8270E/1311/3511ND2-Methylphenol mg/L 9/6/229/6/220.10 EPA 8270E/1311/3511ND3 & 4-Methylphenol mg/L 9/6/229/6/220.10 EPA 8270E/1311/3511NDHexachlorobenzene mg/L 9/6/229/6/220.10 EPA 8270E/1311/3511NDHexachlorobutadiene mg/L 9/6/229/6/220.10 EPA 8270E/1311/3511NDHexachloroethane mg/L 9/6/229/6/220.10 EPA 8270E/1311/3511NDNitrobenzene mg/L 9/6/229/6/220.10 EPA 8270E/1311/3511NDPentachlorophenol mg/L 9/6/229/6/220.10 EPA 8270E/1311/3511NDPyridine Project Name: Recycled Earth CtF WO#: 22H2736 www.ChemtechFord.com Page 19 of 21Page 19 of 22 xx Chemtech-Ford Laboratories Serving the Intermountain West Since 1953 Certificate of Analysis 9632 South 500 West Sandy, UT 84070 O:(801) 262-7299 F: (866) 792-0093 www.ChemtechFord.com Clean Harbors - Environmental Services Anthony Cox 3589 W 500 S SLC, UT 84104 PO#: Receipt: Date Reported: Project Name: 8/29/22 11:50 @ 1.5 °C 9/8/2022 Recycled Earth Report Footnotes Abbreviations ND = Not detected at the corresponding Minimum Reporting Limit (MRL). 1 mg/L = one milligram per liter or 1 mg/kg = one milligram per kilogram = 1 part per million. 1 ug/L = one microgram per liter or 1 ug/kg = one microgram per kilogram = 1 part per billion. 1 ng/L = one nanogram per liter or 1 ng/kg = one nanogram per kilogram = 1 part per trillion. Flag Descriptions SPH = Sample submitted past method specified holding time. Project Name: Recycled Earth CtF WO#: 22H2736 www.ChemtechFord.com Page 20 of 21Page 20 of 22 Page 21 of 22 Page 22 of 22 Appendix A-2 Tetra Tech Preliminary Samples ANALYTICAL REPORT October 17, 2022 Tetra Tech Inc. - UT Sample Delivery Group:L1540992 Samples Received:09/29/2022 Project Number: Description:Dentons Support - Ogden,Utah Site Site:RECYCLED EARTH Report To:Anna Rasmuson 4750 West 2100 South Suite 400 Salt Lake City, UT 84120 Entire Report Reviewed By: October 17, 2022 [Preliminary Report] Chris Ward Project Manager Results relate only to the items tested or calibrated and are reported as rounded values. This test report shall not be reproduced, except in full, without written approval of the laboratory. Where applicable, sampling conducted by Pace Analytical National is performed per guidance provided in laboratory standard operating procedures ENV-SOP-MTJL-0067 and ENV-SOP-MTJL-0068. Where sampling conducted by the customer, results relate to the accuracy of the information provided, and as the samples are received. Pace Analytical National 12065 Lebanon Rd Mount Juliet, TN 37122 615-758-5858 800-767-5859 www.pacenational.com 1 Cp 2 Tc 3 Ss 4 Cn 5 Sr 6 Qc 7 Gl 8 Al 9 Sc ACCOUNT:PROJECT:SDG:DATE/TIME:PAGE: Tetra Tech Inc. - UT L1540992 10/17/22 15:01 1 of 64 October 17, 2022 Chris Ward Project Manager ACCOUNT:PROJECT:SDG:DATE/TIME:PAGE: Tetra Tech Inc. - UT L1540992 10/17/22 15:23 1 of 64 TABLE OF CONTENTS Cp: Cover Page 1 Tc: Table of Contents 2 Ss: Sample Summary 3 Cn: Case Narrative 4 Sr: Sample Results 5 TRENCH-SS L1540992-01 5 BLAST-SS L1540992-02 9 TRENCH-SW L1540992-03 13 INLET-SW L1540992-04 17 Qc: Quality Control Summary 21 Total Solids by Method 2540 G-2011 21 Mercury by Method 7470A 22 Mercury by Method 7471A 23 Metals (ICP) by Method 6010B 24 Volatile Organic Compounds (GC) by Method 8015D/GRO 30 Volatile Organic Compounds (GC/MS) by Method 8260B 33 Semi-Volatile Organic Compounds (GC) by Method 8015 45 Semi Volatile Organic Compounds (GC/MS) by Method 8270C 47 Gl: Glossary of Terms 62 Al: Accreditations & Locations 63 Sc: Sample Chain of Custody 64 1 Cp 2 Tc 3 Ss 4 Cn 5 Sr 6 Qc 7 Gl 8 Al 9 Sc ACCOUNT:PROJECT:SDG:DATE/TIME:PAGE: Tetra Tech Inc. - UT L1540992 10/17/22 15:01 2 of 64 ACCOUNT:PROJECT:SDG:DATE/TIME:PAGE: Tetra Tech Inc. - UT L1540992 10/17/22 15:23 2 of 64 SAMPLE SUMMARY Collected by Collected date/time Received date/time TRENCH-SS L1540992-01 Solid Anna Rasmuson 09/27/22 16:05 09/29/22 13:00 Method Batch Dilution Preparation Analysis Analyst Location date/time date/time Total Solids by Method 2540 G-2011 WG1935121 1 10/01/22 14:53 10/01/22 15:56 CMK Mt. Juliet, TN Mercury by Method 7471A WG1936004 1 10/05/22 12:40 10/06/22 13:56 SRT Mt. Juliet, TN Metals (ICP) by Method 6010B WG1937004 1 10/06/22 23:09 10/10/22 22:27 CCE Mt. Juliet, TN Volatile Organic Compounds (GC) by Method 8015D/GRO WG1939064 25 10/03/22 11:24 10/07/22 21:09 ADM Mt. Juliet, TN Volatile Organic Compounds (GC/MS) by Method 8260B WG1938594 4 10/03/22 11:24 10/06/22 23:01 ACG Mt. Juliet, TN Semi-Volatile Organic Compounds (GC) by Method 8015 WG1938249 50 10/07/22 07:24 10/07/22 14:44 JAS Mt. Juliet, TN Semi Volatile Organic Compounds (GC/MS) by Method 8270C WG1938239 1 10/07/22 22:44 10/09/22 17:14 MSB Mt. Juliet, TN Collected by Collected date/time Received date/time BLAST-SS L1540992-02 Solid Anna Rasmuson 09/27/22 16:30 09/29/22 13:00 Method Batch Dilution Preparation Analysis Analyst Location date/time date/time Total Solids by Method 2540 G-2011 WG1935121 1 10/01/22 14:53 10/01/22 15:56 CMK Mt. Juliet, TN Mercury by Method 7471A WG1936004 1 10/05/22 12:40 10/06/22 13:59 SRT Mt. Juliet, TN Metals (ICP) by Method 6010B WG1937004 5 10/06/22 23:09 10/11/22 10:33 ZSA Mt. Juliet, TN Volatile Organic Compounds (GC) by Method 8015D/GRO WG1939064 25 10/03/22 11:24 10/07/22 21:29 ADM Mt. Juliet, TN Volatile Organic Compounds (GC/MS) by Method 8260B WG1938594 1 10/03/22 11:24 10/06/22 22:42 ACG Mt. Juliet, TN Semi-Volatile Organic Compounds (GC) by Method 8015 WG1938249 1 10/07/22 07:24 10/07/22 14:31 JAS Mt. Juliet, TN Semi Volatile Organic Compounds (GC/MS) by Method 8270C WG1938242 1 10/07/22 22:37 10/09/22 11:11 JNJ Mt. Juliet, TN Collected by Collected date/time Received date/time TRENCH-SW L1540992-03 GW Anna Rasmuson 09/27/22 16:11 09/29/22 13:00 Method Batch Dilution Preparation Analysis Analyst Location date/time date/time Mercury by Method 7470A WG1936171 1 10/13/22 08:14 10/14/22 12:36 ABL Mt. Juliet, TN Metals (ICP) by Method 6010B WG1941473 1 10/14/22 08:53 10/14/22 20:39 KMG Mt. Juliet, TN Metals (ICP) by Method 6010B WG1941473 5 10/14/22 08:53 10/14/22 22:03 KMG Mt. Juliet, TN Volatile Organic Compounds (GC) by Method 8015D/GRO WG1937632 100 10/06/22 04:54 10/06/22 04:54 DWR Mt. Juliet, TN Volatile Organic Compounds (GC/MS) by Method 8260B WG1937343 10 10/05/22 08:48 10/05/22 08:48 ACG Mt. Juliet, TN Semi-Volatile Organic Compounds (GC) by Method 8015 WG1938188 1 10/06/22 23:37 10/14/22 10:29 DMG Mt. Juliet, TN Semi-Volatile Organic Compounds (GC) by Method 8015 WG1938188 10 10/06/22 23:37 10/17/22 11:19 DMG Mt. Juliet, TN Semi Volatile Organic Compounds (GC/MS) by Method 8270C WG1936344 5 10/04/22 03:21 10/06/22 03:36 DSH Mt. Juliet, TN Collected by Collected date/time Received date/time INLET-SW L1540992-04 GW Anna Rasmuson 09/27/22 16:47 09/29/22 13:00 Method Batch Dilution Preparation Analysis Analyst Location date/time date/time Mercury by Method 7470A WG1936171 1 10/13/22 08:14 10/14/22 12:38 ABL Mt. Juliet, TN Metals (ICP) by Method 6010B WG1940066 1 10/10/22 21:54 10/11/22 11:35 ZSA Mt. Juliet, TN Volatile Organic Compounds (GC) by Method 8015D/GRO WG1936401 1 10/03/22 16:51 10/03/22 16:51 JAH Mt. Juliet, TN Volatile Organic Compounds (GC/MS) by Method 8260B WG1937343 1 10/05/22 08:27 10/05/22 08:27 ACG Mt. Juliet, TN Semi-Volatile Organic Compounds (GC) by Method 8015 WG1938188 1 10/06/22 23:37 10/11/22 04:32 JDG Mt. Juliet, TN Semi Volatile Organic Compounds (GC/MS) by Method 8270C WG1936344 1.05 10/04/22 03:21 10/06/22 01:50 DSH Mt. Juliet, TN 1 Cp 2 Tc 3 Ss 4 Cn 5 Sr 6 Qc 7 Gl 8 Al 9 Sc ACCOUNT:PROJECT:SDG:DATE/TIME:PAGE: Tetra Tech Inc. - UT L1540992 10/17/22 15:01 3 of 64 ACCOUNT:PROJECT:SDG:DATE/TIME:PAGE: Tetra Tech Inc. - UT L1540992 10/17/22 15:23 3 of 64 CASE NARRATIVE All sample aliquots were received at the correct temperature, in the proper containers, with the appropriate preservatives, and within method specified holding times, unless qualified or notated within the report. Where applicable, all MDL (LOD) and RDL (LOQ) values reported for environmental samples have been corrected for the dilution factor used in the analysis. All Method and Batch Quality Control are within established criteria except where addressed in this case narrative, a non-conformance form or properly qualified within the sample results. By my digital signature below, I affirm to the best of my knowledge, all problems/anomalies observed by the laboratory as having the potential to affect the quality of the data have been identified by the laboratory, and no information or data have been knowingly withheld that would affect the quality of the data. [Preliminary Report] Chris Ward Project Manager Sample Delivery Group (SDG) Narrative pH outside of method requirement. Lab Sample ID Project Sample ID Method L1540992-03 TRENCH-SW 8015 1 Cp 2 Tc 3 Ss 4 Cn 5 Sr 6 Qc 7 Gl 8 Al 9 Sc ACCOUNT:PROJECT:SDG:DATE/TIME:PAGE: Tetra Tech Inc. - UT L1540992 10/17/22 15:01 4 of 64 Chris Ward Project Manager ACCOUNT:PROJECT:SDG:DATE/TIME:PAGE: Tetra Tech Inc. - UT L1540992 10/17/22 15:23 4 of 64 SAMPLE RESULTS - 01 L1540992 TRENCH-SS Collected date/time: 09/27/22 16:05 Total Solids by Method 2540 G-2011 Result Qualifier Dilution Analysis Batch Analyte %date / time Total Solids 71.3 1 10/01/2022 15:56 WG1935121 Mercury by Method 7471A Result (dry) Qualifier RDL (dry) Dilution Analysis Batch Analyte mg/kg mg/kg date / time Mercury ND 0.0561 1 10/06/2022 13:56 WG1936004 Metals (ICP) by Method 6010B Result (dry) Qualifier RDL (dry) Dilution Analysis Batch Analyte mg/kg mg/kg date / time Antimony ND 2.80 1 10/10/2022 22:27 WG1937004 Arsenic 8.44 2.80 1 10/10/2022 22:27 WG1937004 Beryllium ND 0.280 1 10/10/2022 22:27 WG1937004 Cadmium ND 0.701 1 10/10/2022 22:27 WG1937004 Chromium 7.99 1.40 1 10/10/2022 22:27 WG1937004 Copper 14.1 2.80 1 10/10/2022 22:27 WG1937004 Lead 4.51 0.701 1 10/10/2022 22:27 WG1937004 Nickel 4.38 2.80 1 10/10/2022 22:27 WG1937004 Selenium ND 2.80 1 10/10/2022 22:27 WG1937004 Silver ND 1.40 1 10/10/2022 22:27 WG1937004 Thallium ND 2.80 1 10/10/2022 22:27 WG1937004 Zinc 30.4 7.01 1 10/10/2022 22:27 WG1937004 Volatile Organic Compounds (GC) by Method 8015D/GRO Result (dry) Qualifier RDL (dry) Dilution Analysis Batch Analyte mg/kg mg/kg date / time TPH (GC/FID) Low Fraction 18.6 4.51 25 10/07/2022 21:09 WG1939064 (S) a,a,a-Trifluorotoluene(FID) 98.7 77.0-120 10/07/2022 21:09 WG1939064 Volatile Organic Compounds (GC/MS) by Method 8260B Result (dry) Qualifier RDL (dry) Dilution Analysis Batch Analyte mg/kg mg/kg date / time Acetone ND J3 J4 0.361 4 10/06/2022 23:01 WG1938594 Acrylonitrile ND 0.0902 4 10/06/2022 23:01 WG1938594 Benzene ND 0.00721 4 10/06/2022 23:01 WG1938594 Bromobenzene ND 0.0902 4 10/06/2022 23:01 WG1938594 Bromodichloromethane ND 0.0180 4 10/06/2022 23:01 WG1938594 Bromoform ND 0.180 4 10/06/2022 23:01 WG1938594 Bromomethane ND 0.0902 4 10/06/2022 23:01 WG1938594 n-Butylbenzene ND 0.0902 4 10/06/2022 23:01 WG1938594 sec-Butylbenzene ND 0.0902 4 10/06/2022 23:01 WG1938594 tert-Butylbenzene ND 0.0361 4 10/06/2022 23:01 WG1938594 Carbon tetrachloride ND 0.0361 4 10/06/2022 23:01 WG1938594 Chlorobenzene ND 0.0180 4 10/06/2022 23:01 WG1938594 Chlorodibromomethane ND 0.0180 4 10/06/2022 23:01 WG1938594 Chloroethane ND 0.0361 4 10/06/2022 23:01 WG1938594 Chloroform ND 0.0180 4 10/06/2022 23:01 WG1938594 Chloromethane ND 0.0902 4 10/06/2022 23:01 WG1938594 2-Chlorotoluene ND 0.0180 4 10/06/2022 23:01 WG1938594 4-Chlorotoluene ND 0.0361 4 10/06/2022 23:01 WG1938594 1,2-Dibromo-3-Chloropropane ND 0.180 4 10/06/2022 23:01 WG1938594 1,2-Dibromoethane ND 0.0180 4 10/06/2022 23:01 WG1938594 Dibromomethane ND 0.0361 4 10/06/2022 23:01 WG1938594 1,2-Dichlorobenzene ND 0.0361 4 10/06/2022 23:01 WG1938594 1 Cp 2 Tc 3 Ss 4 Cn 5 Sr 6 Qc 7 Gl 8 Al 9 Sc ACCOUNT:PROJECT:SDG:DATE/TIME:PAGE: Tetra Tech Inc. - UT L1540992 10/17/22 15:01 5 of 64 ACCOUNT:PROJECT:SDG:DATE/TIME:PAGE: Tetra Tech Inc. - UT L1540992 10/17/22 15:23 5 of 64 SAMPLE RESULTS - 01 L1540992 TRENCH-SS Collected date/time: 09/27/22 16:05 Volatile Organic Compounds (GC/MS) by Method 8260B Result (dry) Qualifier RDL (dry) Dilution Analysis Batch Analyte mg/kg mg/kg date / time 1,3-Dichlorobenzene ND 0.0361 4 10/06/2022 23:01 WG1938594 1,4-Dichlorobenzene ND 0.0361 4 10/06/2022 23:01 WG1938594 Dichlorodifluoromethane ND 0.0180 4 10/06/2022 23:01 WG1938594 1,1-Dichloroethane ND 0.0180 4 10/06/2022 23:01 WG1938594 1,2-Dichloroethane ND 0.0180 4 10/06/2022 23:01 WG1938594 1,1-Dichloroethene ND 0.0180 4 10/06/2022 23:01 WG1938594 cis-1,2-Dichloroethene ND 0.0180 4 10/06/2022 23:01 WG1938594 trans-1,2-Dichloroethene ND 0.0361 4 10/06/2022 23:01 WG1938594 1,2-Dichloropropane ND 0.0361 4 10/06/2022 23:01 WG1938594 1,1-Dichloropropene ND 0.0180 4 10/06/2022 23:01 WG1938594 1,3-Dichloropropane ND 0.0361 4 10/06/2022 23:01 WG1938594 cis-1,3-Dichloropropene ND 0.0180 4 10/06/2022 23:01 WG1938594 trans-1,3-Dichloropropene ND 0.0361 4 10/06/2022 23:01 WG1938594 2,2-Dichloropropane ND 0.0180 4 10/06/2022 23:01 WG1938594 Di-isopropyl ether ND 0.00721 4 10/06/2022 23:01 WG1938594 Ethylbenzene ND 0.0180 4 10/06/2022 23:01 WG1938594 Hexachloro-1,3-butadiene ND 0.180 4 10/06/2022 23:01 WG1938594 Isopropylbenzene ND 0.0180 4 10/06/2022 23:01 WG1938594 p-Isopropyltoluene 0.0606 0.0361 4 10/06/2022 23:01 WG1938594 2-Butanone (MEK)0.752 0.721 4 10/06/2022 23:01 WG1938594 Methylene Chloride ND 0.180 4 10/06/2022 23:01 WG1938594 4-Methyl-2-pentanone (MIBK) 1.67 0.180 4 10/06/2022 23:01 WG1938594 Methyl tert-butyl ether ND 0.00721 4 10/06/2022 23:01 WG1938594 Naphthalene 0.167 0.0902 4 10/06/2022 23:01 WG1938594 n-Propylbenzene ND 0.0361 4 10/06/2022 23:01 WG1938594 Styrene ND 0.0902 4 10/06/2022 23:01 WG1938594 1,1,1,2-Tetrachloroethane ND 0.0180 4 10/06/2022 23:01 WG1938594 1,1,2,2-Tetrachloroethane ND 0.0180 4 10/06/2022 23:01 WG1938594 1,1,2-Trichlorotrifluoroethane ND 0.0180 4 10/06/2022 23:01 WG1938594 Tetrachloroethene ND 0.0180 4 10/06/2022 23:01 WG1938594 Toluene 0.911 0.0361 4 10/06/2022 23:01 WG1938594 1,2,3-Trichlorobenzene ND 0.0902 4 10/06/2022 23:01 WG1938594 1,2,4-Trichlorobenzene ND 0.0902 4 10/06/2022 23:01 WG1938594 1,1,1-Trichloroethane ND 0.0180 4 10/06/2022 23:01 WG1938594 1,1,2-Trichloroethane ND 0.0180 4 10/06/2022 23:01 WG1938594 Trichloroethene ND 0.00721 4 10/06/2022 23:01 WG1938594 Trichlorofluoromethane ND 0.0180 4 10/06/2022 23:01 WG1938594 1,2,3-Trichloropropane ND 0.0902 4 10/06/2022 23:01 WG1938594 1,2,4-Trimethylbenzene 0.301 0.0361 4 10/06/2022 23:01 WG1938594 1,2,3-Trimethylbenzene 0.0853 0.0361 4 10/06/2022 23:01 WG1938594 1,3,5-Trimethylbenzene 0.110 0.0361 4 10/06/2022 23:01 WG1938594 Vinyl chloride ND 0.0180 4 10/06/2022 23:01 WG1938594 Xylenes, Total 0.0974 0.0469 4 10/06/2022 23:01 WG1938594 (S) Toluene-d8 97.6 75.0-131 10/06/2022 23:01 WG1938594 (S) 4-Bromofluorobenzene 104 67.0-138 10/06/2022 23:01 WG1938594 (S) 1,2-Dichloroethane-d4 84.6 70.0-130 10/06/2022 23:01 WG1938594 Semi-Volatile Organic Compounds (GC) by Method 8015 Result (dry) Qualifier RDL (dry) Dilution Analysis Batch Analyte mg/kg mg/kg date / time C10-C28 Diesel Range 2940 280 50 10/07/2022 14:44 WG1938249 C28-C40 Oil Range 957 280 50 10/07/2022 14:44 WG1938249 (S) o-Terphenyl 0.000 J7 18.0-148 10/07/2022 14:44 WG1938249 1 Cp 2 Tc 3 Ss 4 Cn 5 Sr 6 Qc 7 Gl 8 Al 9 Sc ACCOUNT:PROJECT:SDG:DATE/TIME:PAGE: Tetra Tech Inc. - UT L1540992 10/17/22 15:01 6 of 64 ACCOUNT:PROJECT:SDG:DATE/TIME:PAGE: Tetra Tech Inc. - UT L1540992 10/17/22 15:23 6 of 64 SAMPLE RESULTS - 01 L1540992 TRENCH-SS Collected date/time: 09/27/22 16:05 Semi Volatile Organic Compounds (GC/MS) by Method 8270C Result (dry) Qualifier RDL (dry) Dilution Analysis Batch Analyte mg/kg mg/kg date / time Acenaphthene ND 0.0467 1 10/09/2022 17:14 WG1938239 Acenaphthylene ND 0.0467 1 10/09/2022 17:14 WG1938239 Anthracene ND 0.0467 1 10/09/2022 17:14 WG1938239 Benzidine ND 2.34 1 10/09/2022 17:14 WG1938239 Benzo(a)anthracene ND 0.0467 1 10/09/2022 17:14 WG1938239 Benzo(b)fluoranthene ND 0.0467 1 10/09/2022 17:14 WG1938239 Benzo(k)fluoranthene ND 0.0467 1 10/09/2022 17:14 WG1938239 Benzo(g,h,i)perylene ND 0.0467 1 10/09/2022 17:14 WG1938239 Benzo(a)pyrene ND 0.0467 1 10/09/2022 17:14 WG1938239 Bis(2-chlorethoxy)methane ND 0.467 1 10/09/2022 17:14 WG1938239 Bis(2-chloroethyl)ether ND 0.467 1 10/09/2022 17:14 WG1938239 2,2-Oxybis(1-Chloropropane) ND 0.467 1 10/09/2022 17:14 WG1938239 4-Bromophenyl-phenylether ND 0.467 1 10/09/2022 17:14 WG1938239 2-Chloronaphthalene ND 0.0467 1 10/09/2022 17:14 WG1938239 4-Chlorophenyl-phenylether ND 0.467 1 10/09/2022 17:14 WG1938239 Chrysene ND 0.0467 1 10/09/2022 17:14 WG1938239 Dibenz(a,h)anthracene ND 0.0467 1 10/09/2022 17:14 WG1938239 3,3-Dichlorobenzidine ND 0.467 1 10/09/2022 17:14 WG1938239 2,4-Dinitrotoluene ND 0.467 1 10/09/2022 17:14 WG1938239 2,6-Dinitrotoluene ND 0.467 1 10/09/2022 17:14 WG1938239 Fluoranthene ND 0.0467 1 10/09/2022 17:14 WG1938239 Fluorene ND 0.0467 1 10/09/2022 17:14 WG1938239 Hexachlorobenzene ND 0.467 1 10/09/2022 17:14 WG1938239 Hexachloro-1,3-butadiene ND 0.467 1 10/09/2022 17:14 WG1938239 Hexachlorocyclopentadiene ND 0.467 1 10/09/2022 17:14 WG1938239 Hexachloroethane ND 0.467 1 10/09/2022 17:14 WG1938239 Indeno(1,2,3-cd)pyrene ND 0.0467 1 10/09/2022 17:14 WG1938239 Isophorone ND 0.467 1 10/09/2022 17:14 WG1938239 Naphthalene ND 0.0467 1 10/09/2022 17:14 WG1938239 Nitrobenzene ND 0.467 1 10/09/2022 17:14 WG1938239 n-Nitrosodimethylamine ND 0.467 1 10/09/2022 17:14 WG1938239 n-Nitrosodiphenylamine ND J4 0.467 1 10/09/2022 17:14 WG1938239 n-Nitrosodi-n-propylamine ND 0.467 1 10/09/2022 17:14 WG1938239 Phenanthrene ND 0.0467 1 10/09/2022 17:14 WG1938239 Benzylbutyl phthalate ND 0.467 1 10/09/2022 17:14 WG1938239 Bis(2-ethylhexyl)phthalate ND 0.467 1 10/09/2022 17:14 WG1938239 Di-n-butyl phthalate ND 0.467 1 10/09/2022 17:14 WG1938239 Diethyl phthalate ND 0.467 1 10/09/2022 17:14 WG1938239 Dimethyl phthalate ND 0.467 1 10/09/2022 17:14 WG1938239 Di-n-octyl phthalate ND 0.467 1 10/09/2022 17:14 WG1938239 Pyrene ND 0.0467 1 10/09/2022 17:14 WG1938239 1,2,4-Trichlorobenzene ND 0.467 1 10/09/2022 17:14 WG1938239 4-Chloro-3-methylphenol ND 0.467 1 10/09/2022 17:14 WG1938239 2-Chlorophenol ND 0.467 1 10/09/2022 17:14 WG1938239 2,4-Dichlorophenol ND 0.467 1 10/09/2022 17:14 WG1938239 2,4-Dimethylphenol ND 0.467 1 10/09/2022 17:14 WG1938239 4,6-Dinitro-2-methylphenol ND 0.467 1 10/09/2022 17:14 WG1938239 2,4-Dinitrophenol ND 0.467 1 10/09/2022 17:14 WG1938239 2-Nitrophenol ND 0.467 1 10/09/2022 17:14 WG1938239 4-Nitrophenol ND 0.467 1 10/09/2022 17:14 WG1938239 Pentachlorophenol ND 0.467 1 10/09/2022 17:14 WG1938239 Phenol ND 0.467 1 10/09/2022 17:14 WG1938239 2,4,6-Trichlorophenol ND 0.467 1 10/09/2022 17:14 WG1938239 (S) Nitrobenzene-d5 40.5 10.0-122 10/09/2022 17:14 WG1938239 (S) 2-Fluorobiphenyl 50.0 15.0-120 10/09/2022 17:14 WG1938239 (S) p-Terphenyl-d14 57.6 10.0-120 10/09/2022 17:14 WG1938239 1 Cp 2 Tc 3 Ss 4 Cn 5 Sr 6 Qc 7 Gl 8 Al 9 Sc ACCOUNT:PROJECT:SDG:DATE/TIME:PAGE: Tetra Tech Inc. - UT L1540992 10/17/22 15:01 7 of 64 ACCOUNT:PROJECT:SDG:DATE/TIME:PAGE: Tetra Tech Inc. - UT L1540992 10/17/22 15:23 7 of 64 SAMPLE RESULTS - 01 L1540992 TRENCH-SS Collected date/time: 09/27/22 16:05 Semi Volatile Organic Compounds (GC/MS) by Method 8270C Result (dry) Qualifier RDL (dry) Dilution Analysis Batch Analyte mg/kg mg/kg date / time (S) Phenol-d5 50.2 10.0-120 10/09/2022 17:14 WG1938239 (S) 2-Fluorophenol 51.2 12.0-120 10/09/2022 17:14 WG1938239 (S) 2,4,6-Tribromophenol 54.1 10.0-127 10/09/2022 17:14 WG1938239 1 Cp 2 Tc 3 Ss 4 Cn 5 Sr 6 Qc 7 Gl 8 Al 9 Sc ACCOUNT:PROJECT:SDG:DATE/TIME:PAGE: Tetra Tech Inc. - UT L1540992 10/17/22 15:01 8 of 64 ACCOUNT:PROJECT:SDG:DATE/TIME:PAGE: Tetra Tech Inc. - UT L1540992 10/17/22 15:23 8 of 64 SAMPLE RESULTS - 02 L1540992 BLAST-SS Collected date/time: 09/27/22 16:30 Total Solids by Method 2540 G-2011 Result Qualifier Dilution Analysis Batch Analyte %date / time Total Solids 84.4 1 10/01/2022 15:56 WG1935121 Mercury by Method 7471A Result (dry) Qualifier RDL (dry) Dilution Analysis Batch Analyte mg/kg mg/kg date / time Mercury ND 0.0474 1 10/06/2022 13:59 WG1936004 Metals (ICP) by Method 6010B Result (dry) Qualifier RDL (dry) Dilution Analysis Batch Analyte mg/kg mg/kg date / time Antimony 22.1 11.9 5 10/11/2022 10:33 WG1937004 Arsenic 19.4 11.9 5 10/11/2022 10:33 WG1937004 Beryllium ND 1.19 5 10/11/2022 10:33 WG1937004 Cadmium ND 2.96 5 10/11/2022 10:33 WG1937004 Chromium 928 5.93 5 10/11/2022 10:33 WG1937004 Copper 1110 11.9 5 10/11/2022 10:33 WG1937004 Lead 23.5 2.96 5 10/11/2022 10:33 WG1937004 Nickel 430 11.9 5 10/11/2022 10:33 WG1937004 Selenium ND 11.9 5 10/11/2022 10:33 WG1937004 Silver ND 5.93 5 10/11/2022 10:33 WG1937004 Thallium ND 11.9 5 10/11/2022 10:33 WG1937004 Zinc 50.8 29.6 5 10/11/2022 10:33 WG1937004 Volatile Organic Compounds (GC) by Method 8015D/GRO Result (dry) Qualifier RDL (dry) Dilution Analysis Batch Analyte mg/kg mg/kg date / time TPH (GC/FID) Low Fraction 5.52 3.43 25 10/07/2022 21:29 WG1939064 (S) a,a,a-Trifluorotoluene(FID) 90.3 77.0-120 10/07/2022 21:29 WG1939064 Volatile Organic Compounds (GC/MS) by Method 8260B Result (dry) Qualifier RDL (dry) Dilution Analysis Batch Analyte mg/kg mg/kg date / time Acetone ND J3 J4 0.0685 1 10/06/2022 22:42 WG1938594 Acrylonitrile ND 0.0171 1 10/06/2022 22:42 WG1938594 Benzene 0.00895 0.00137 1 10/06/2022 22:42 WG1938594 Bromobenzene ND 0.0171 1 10/06/2022 22:42 WG1938594 Bromodichloromethane ND 0.00343 1 10/06/2022 22:42 WG1938594 Bromoform ND 0.0343 1 10/06/2022 22:42 WG1938594 Bromomethane ND 0.0171 1 10/06/2022 22:42 WG1938594 n-Butylbenzene ND 0.0171 1 10/06/2022 22:42 WG1938594 sec-Butylbenzene ND 0.0171 1 10/06/2022 22:42 WG1938594 tert-Butylbenzene ND 0.00685 1 10/06/2022 22:42 WG1938594 Carbon tetrachloride ND 0.00685 1 10/06/2022 22:42 WG1938594 Chlorobenzene ND 0.00343 1 10/06/2022 22:42 WG1938594 Chlorodibromomethane ND 0.00343 1 10/06/2022 22:42 WG1938594 Chloroethane ND 0.00685 1 10/06/2022 22:42 WG1938594 Chloroform ND 0.00343 1 10/06/2022 22:42 WG1938594 Chloromethane ND 0.0171 1 10/06/2022 22:42 WG1938594 2-Chlorotoluene ND 0.00343 1 10/06/2022 22:42 WG1938594 4-Chlorotoluene ND 0.00685 1 10/06/2022 22:42 WG1938594 1,2-Dibromo-3-Chloropropane ND 0.0343 1 10/06/2022 22:42 WG1938594 1,2-Dibromoethane ND 0.00343 1 10/06/2022 22:42 WG1938594 Dibromomethane ND 0.00685 1 10/06/2022 22:42 WG1938594 1,2-Dichlorobenzene ND 0.00685 1 10/06/2022 22:42 WG1938594 1 Cp 2 Tc 3 Ss 4 Cn 5 Sr 6 Qc 7 Gl 8 Al 9 Sc ACCOUNT:PROJECT:SDG:DATE/TIME:PAGE: Tetra Tech Inc. - UT L1540992 10/17/22 15:01 9 of 64 ACCOUNT:PROJECT:SDG:DATE/TIME:PAGE: Tetra Tech Inc. - UT L1540992 10/17/22 15:23 9 of 64 SAMPLE RESULTS - 02 L1540992 BLAST-SS Collected date/time: 09/27/22 16:30 Volatile Organic Compounds (GC/MS) by Method 8260B Result (dry) Qualifier RDL (dry) Dilution Analysis Batch Analyte mg/kg mg/kg date / time 1,3-Dichlorobenzene ND 0.00685 1 10/06/2022 22:42 WG1938594 1,4-Dichlorobenzene ND 0.00685 1 10/06/2022 22:42 WG1938594 Dichlorodifluoromethane ND 0.00343 1 10/06/2022 22:42 WG1938594 1,1-Dichloroethane ND 0.00343 1 10/06/2022 22:42 WG1938594 1,2-Dichloroethane ND 0.00343 1 10/06/2022 22:42 WG1938594 1,1-Dichloroethene ND 0.00343 1 10/06/2022 22:42 WG1938594 cis-1,2-Dichloroethene ND 0.00343 1 10/06/2022 22:42 WG1938594 trans-1,2-Dichloroethene ND 0.00685 1 10/06/2022 22:42 WG1938594 1,2-Dichloropropane ND 0.00685 1 10/06/2022 22:42 WG1938594 1,1-Dichloropropene ND 0.00343 1 10/06/2022 22:42 WG1938594 1,3-Dichloropropane ND 0.00685 1 10/06/2022 22:42 WG1938594 cis-1,3-Dichloropropene ND 0.00343 1 10/06/2022 22:42 WG1938594 trans-1,3-Dichloropropene ND 0.00685 1 10/06/2022 22:42 WG1938594 2,2-Dichloropropane ND 0.00343 1 10/06/2022 22:42 WG1938594 Di-isopropyl ether ND 0.00137 1 10/06/2022 22:42 WG1938594 Ethylbenzene 0.00767 0.00343 1 10/06/2022 22:42 WG1938594 Hexachloro-1,3-butadiene ND 0.0343 1 10/06/2022 22:42 WG1938594 Isopropylbenzene ND 0.00343 1 10/06/2022 22:42 WG1938594 p-Isopropyltoluene ND 0.00685 1 10/06/2022 22:42 WG1938594 2-Butanone (MEK)ND 0.137 1 10/06/2022 22:42 WG1938594 Methylene Chloride ND 0.0343 1 10/06/2022 22:42 WG1938594 4-Methyl-2-pentanone (MIBK) ND 0.0343 1 10/06/2022 22:42 WG1938594 Methyl tert-butyl ether ND 0.00137 1 10/06/2022 22:42 WG1938594 Naphthalene ND 0.0171 1 10/06/2022 22:42 WG1938594 n-Propylbenzene ND 0.00685 1 10/06/2022 22:42 WG1938594 Styrene ND 0.0171 1 10/06/2022 22:42 WG1938594 1,1,1,2-Tetrachloroethane ND 0.00343 1 10/06/2022 22:42 WG1938594 1,1,2,2-Tetrachloroethane ND 0.00343 1 10/06/2022 22:42 WG1938594 1,1,2-Trichlorotrifluoroethane ND 0.00343 1 10/06/2022 22:42 WG1938594 Tetrachloroethene ND 0.00343 1 10/06/2022 22:42 WG1938594 Toluene 0.0280 0.00685 1 10/06/2022 22:42 WG1938594 1,2,3-Trichlorobenzene ND 0.0171 1 10/06/2022 22:42 WG1938594 1,2,4-Trichlorobenzene ND 0.0171 1 10/06/2022 22:42 WG1938594 1,1,1-Trichloroethane ND 0.00343 1 10/06/2022 22:42 WG1938594 1,1,2-Trichloroethane ND 0.00343 1 10/06/2022 22:42 WG1938594 Trichloroethene ND 0.00137 1 10/06/2022 22:42 WG1938594 Trichlorofluoromethane ND 0.00343 1 10/06/2022 22:42 WG1938594 1,2,3-Trichloropropane ND 0.0171 1 10/06/2022 22:42 WG1938594 1,2,4-Trimethylbenzene ND 0.00685 1 10/06/2022 22:42 WG1938594 1,2,3-Trimethylbenzene ND 0.00685 1 10/06/2022 22:42 WG1938594 1,3,5-Trimethylbenzene ND 0.00685 1 10/06/2022 22:42 WG1938594 Vinyl chloride ND 0.00343 1 10/06/2022 22:42 WG1938594 Xylenes, Total 0.0100 0.00891 1 10/06/2022 22:42 WG1938594 (S) Toluene-d8 104 75.0-131 10/06/2022 22:42 WG1938594 (S) 4-Bromofluorobenzene 99.1 67.0-138 10/06/2022 22:42 WG1938594 (S) 1,2-Dichloroethane-d4 82.5 70.0-130 10/06/2022 22:42 WG1938594 Semi-Volatile Organic Compounds (GC) by Method 8015 Result (dry) Qualifier RDL (dry) Dilution Analysis Batch Analyte mg/kg mg/kg date / time C10-C28 Diesel Range 13.4 4.74 1 10/07/2022 14:31 WG1938249 C28-C40 Oil Range 46.6 4.74 1 10/07/2022 14:31 WG1938249 (S) o-Terphenyl 48.8 18.0-148 10/07/2022 14:31 WG1938249 1 Cp 2 Tc 3 Ss 4 Cn 5 Sr 6 Qc 7 Gl 8 Al 9 Sc ACCOUNT:PROJECT:SDG:DATE/TIME:PAGE: Tetra Tech Inc. - UT L1540992 10/17/22 15:01 10 of 64 ACCOUNT:PROJECT:SDG:DATE/TIME:PAGE: Tetra Tech Inc. - UT L1540992 10/17/22 15:23 10 of 64 SAMPLE RESULTS - 02 L1540992 BLAST-SS Collected date/time: 09/27/22 16:30 Semi Volatile Organic Compounds (GC/MS) by Method 8270C Result (dry) Qualifier RDL (dry) Dilution Analysis Batch Analyte mg/kg mg/kg date / time Acenaphthene ND 0.0395 1 10/09/2022 11:11 WG1938242 Acenaphthylene ND 0.0395 1 10/09/2022 11:11 WG1938242 Anthracene ND 0.0395 1 10/09/2022 11:11 WG1938242 Benzidine ND 1.98 1 10/09/2022 11:11 WG1938242 Benzo(a)anthracene ND 0.0395 1 10/09/2022 11:11 WG1938242 Benzo(b)fluoranthene ND 0.0395 1 10/09/2022 11:11 WG1938242 Benzo(k)fluoranthene ND 0.0395 1 10/09/2022 11:11 WG1938242 Benzo(g,h,i)perylene ND 0.0395 1 10/09/2022 11:11 WG1938242 Benzo(a)pyrene ND 0.0395 1 10/09/2022 11:11 WG1938242 Bis(2-chlorethoxy)methane ND 0.395 1 10/09/2022 11:11 WG1938242 Bis(2-chloroethyl)ether ND 0.395 1 10/09/2022 11:11 WG1938242 2,2-Oxybis(1-Chloropropane) ND 0.395 1 10/09/2022 11:11 WG1938242 4-Bromophenyl-phenylether ND 0.395 1 10/09/2022 11:11 WG1938242 2-Chloronaphthalene ND 0.0395 1 10/09/2022 11:11 WG1938242 4-Chlorophenyl-phenylether ND 0.395 1 10/09/2022 11:11 WG1938242 Chrysene ND 0.0395 1 10/09/2022 11:11 WG1938242 Dibenz(a,h)anthracene ND 0.0395 1 10/09/2022 11:11 WG1938242 3,3-Dichlorobenzidine ND 0.395 1 10/09/2022 11:11 WG1938242 2,4-Dinitrotoluene ND 0.395 1 10/09/2022 11:11 WG1938242 2,6-Dinitrotoluene ND 0.395 1 10/09/2022 11:11 WG1938242 Fluoranthene ND 0.0395 1 10/09/2022 11:11 WG1938242 Fluorene ND 0.0395 1 10/09/2022 11:11 WG1938242 Hexachlorobenzene ND 0.395 1 10/09/2022 11:11 WG1938242 Hexachloro-1,3-butadiene ND 0.395 1 10/09/2022 11:11 WG1938242 Hexachlorocyclopentadiene ND 0.395 1 10/09/2022 11:11 WG1938242 Hexachloroethane ND 0.395 1 10/09/2022 11:11 WG1938242 Indeno(1,2,3-cd)pyrene ND 0.0395 1 10/09/2022 11:11 WG1938242 Isophorone ND 0.395 1 10/09/2022 11:11 WG1938242 Naphthalene ND 0.0395 1 10/09/2022 11:11 WG1938242 Nitrobenzene ND 0.395 1 10/09/2022 11:11 WG1938242 n-Nitrosodimethylamine ND 0.395 1 10/09/2022 11:11 WG1938242 n-Nitrosodiphenylamine ND 0.395 1 10/09/2022 11:11 WG1938242 n-Nitrosodi-n-propylamine ND 0.395 1 10/09/2022 11:11 WG1938242 Phenanthrene ND 0.0395 1 10/09/2022 11:11 WG1938242 Benzylbutyl phthalate ND 0.395 1 10/09/2022 11:11 WG1938242 Bis(2-ethylhexyl)phthalate ND 0.395 1 10/09/2022 11:11 WG1938242 Di-n-butyl phthalate ND 0.395 1 10/09/2022 11:11 WG1938242 Diethyl phthalate ND 0.395 1 10/09/2022 11:11 WG1938242 Dimethyl phthalate ND 0.395 1 10/09/2022 11:11 WG1938242 Di-n-octyl phthalate ND 0.395 1 10/09/2022 11:11 WG1938242 Pyrene ND 0.0395 1 10/09/2022 11:11 WG1938242 1,2,4-Trichlorobenzene ND 0.395 1 10/09/2022 11:11 WG1938242 4-Chloro-3-methylphenol ND 0.395 1 10/09/2022 11:11 WG1938242 2-Chlorophenol ND 0.395 1 10/09/2022 11:11 WG1938242 2,4-Dichlorophenol ND 0.395 1 10/09/2022 11:11 WG1938242 2,4-Dimethylphenol ND 0.395 1 10/09/2022 11:11 WG1938242 4,6-Dinitro-2-methylphenol ND 0.395 1 10/09/2022 11:11 WG1938242 2,4-Dinitrophenol ND 0.395 1 10/09/2022 11:11 WG1938242 2-Nitrophenol ND 0.395 1 10/09/2022 11:11 WG1938242 4-Nitrophenol ND 0.395 1 10/09/2022 11:11 WG1938242 Pentachlorophenol ND 0.395 1 10/09/2022 11:11 WG1938242 Phenol ND 0.395 1 10/09/2022 11:11 WG1938242 2,4,6-Trichlorophenol ND 0.395 1 10/09/2022 11:11 WG1938242 (S) Nitrobenzene-d5 24.5 10.0-122 10/09/2022 11:11 WG1938242 (S) 2-Fluorobiphenyl 42.8 15.0-120 10/09/2022 11:11 WG1938242 (S) p-Terphenyl-d14 43.1 10.0-120 10/09/2022 11:11 WG1938242 1 Cp 2 Tc 3 Ss 4 Cn 5 Sr 6 Qc 7 Gl 8 Al 9 Sc ACCOUNT:PROJECT:SDG:DATE/TIME:PAGE: Tetra Tech Inc. - UT L1540992 10/17/22 15:01 11 of 64 ACCOUNT:PROJECT:SDG:DATE/TIME:PAGE: Tetra Tech Inc. - UT L1540992 10/17/22 15:23 11 of 64 SAMPLE RESULTS - 02 L1540992 BLAST-SS Collected date/time: 09/27/22 16:30 Semi Volatile Organic Compounds (GC/MS) by Method 8270C Result (dry) Qualifier RDL (dry) Dilution Analysis Batch Analyte mg/kg mg/kg date / time (S) Phenol-d5 40.4 10.0-120 10/09/2022 11:11 WG1938242 (S) 2-Fluorophenol 44.4 12.0-120 10/09/2022 11:11 WG1938242 (S) 2,4,6-Tribromophenol 42.3 10.0-127 10/09/2022 11:11 WG1938242 1 Cp 2 Tc 3 Ss 4 Cn 5 Sr 6 Qc 7 Gl 8 Al 9 Sc ACCOUNT:PROJECT:SDG:DATE/TIME:PAGE: Tetra Tech Inc. - UT L1540992 10/17/22 15:01 12 of 64 ACCOUNT:PROJECT:SDG:DATE/TIME:PAGE: Tetra Tech Inc. - UT L1540992 10/17/22 15:23 12 of 64 SAMPLE RESULTS - 03 L1540992 TRENCH-SW Collected date/time: 09/27/22 16:11 Mercury by Method 7470A Result Qualifier RDL Dilution Analysis Batch Analyte mg/l mg/l date / time Mercury ND 0.000200 1 10/14/2022 12:36 WG1936171 Metals (ICP) by Method 6010B Result Qualifier RDL Dilution Analysis Batch Analyte mg/l mg/l date / time Antimony 0.0126 0.0100 1 10/14/2022 20:39 WG1941473 Arsenic 0.462 0.0100 1 10/14/2022 20:39 WG1941473 Beryllium ND 0.00200 1 10/14/2022 20:39 WG1941473 Cadmium ND 0.00200 1 10/14/2022 20:39 WG1941473 Chromium 0.0128 0.0100 1 10/14/2022 20:39 WG1941473 Copper 0.0409 B 0.0100 1 10/14/2022 20:39 WG1941473 Lead ND 0.0300 5 10/14/2022 22:03 WG1941473 Nickel 0.0926 0.0100 1 10/14/2022 20:39 WG1941473 Selenium ND 0.0100 1 10/14/2022 20:39 WG1941473 Silver ND 0.00500 1 10/14/2022 20:39 WG1941473 Thallium ND 0.0100 1 10/14/2022 20:39 WG1941473 Zinc 0.217 0.0500 1 10/14/2022 20:39 WG1941473 Volatile Organic Compounds (GC) by Method 8015D/GRO Result Qualifier RDL Dilution Analysis Batch Analyte mg/l mg/l date / time TPH (GC/FID) Low Fraction ND 10.0 100 10/06/2022 04:54 WG1937632 (S) a,a,a-Trifluorotoluene(FID) 101 78.0-120 10/06/2022 04:54 WG1937632 Sample Narrative: L1540992-03 WG1937632: Lowest possible dilution due to sample foaming. Volatile Organic Compounds (GC/MS) by Method 8260B Result Qualifier RDL Dilution Analysis Batch Analyte mg/l mg/l date / time Acetone ND 0.500 10 10/05/2022 08:48 WG1937343 Acrolein ND 0.500 10 10/05/2022 08:48 WG1937343 Acrylonitrile ND 0.100 10 10/05/2022 08:48 WG1937343 Benzene ND 0.0100 10 10/05/2022 08:48 WG1937343 Bromobenzene ND 0.0100 10 10/05/2022 08:48 WG1937343 Bromodichloromethane ND 0.0100 10 10/05/2022 08:48 WG1937343 Bromoform ND 0.0100 10 10/05/2022 08:48 WG1937343 Bromomethane ND J3 J4 0.0500 10 10/05/2022 08:48 WG1937343 n-Butylbenzene ND 0.0100 10 10/05/2022 08:48 WG1937343 sec-Butylbenzene ND 0.0100 10 10/05/2022 08:48 WG1937343 tert-Butylbenzene ND 0.0100 10 10/05/2022 08:48 WG1937343 Carbon tetrachloride ND 0.0100 10 10/05/2022 08:48 WG1937343 Chlorobenzene ND 0.0100 10 10/05/2022 08:48 WG1937343 Chlorodibromomethane ND 0.0100 10 10/05/2022 08:48 WG1937343 Chloroethane ND 0.0500 10 10/05/2022 08:48 WG1937343 Chloroform ND 0.0500 10 10/05/2022 08:48 WG1937343 Chloromethane ND 0.0250 10 10/05/2022 08:48 WG1937343 2-Chlorotoluene ND 0.0100 10 10/05/2022 08:48 WG1937343 4-Chlorotoluene ND 0.0100 10 10/05/2022 08:48 WG1937343 1,2-Dibromo-3-Chloropropane ND 0.0500 10 10/05/2022 08:48 WG1937343 1,2-Dibromoethane ND 0.0100 10 10/05/2022 08:48 WG1937343 Dibromomethane ND 0.0100 10 10/05/2022 08:48 WG1937343 1,2-Dichlorobenzene ND 0.0100 10 10/05/2022 08:48 WG1937343 1,3-Dichlorobenzene ND 0.0100 10 10/05/2022 08:48 WG1937343 1 Cp 2 Tc 3 Ss 4 Cn 5 Sr 6 Qc 7 Gl 8 Al 9 Sc ACCOUNT:PROJECT:SDG:DATE/TIME:PAGE: Tetra Tech Inc. - UT L1540992 10/17/22 15:01 13 of 64 ACCOUNT:PROJECT:SDG:DATE/TIME:PAGE: Tetra Tech Inc. - UT L1540992 10/17/22 15:23 13 of 64 SAMPLE RESULTS - 03 L1540992 TRENCH-SW Collected date/time: 09/27/22 16:11 Volatile Organic Compounds (GC/MS) by Method 8260B Result Qualifier RDL Dilution Analysis Batch Analyte mg/l mg/l date / time 1,4-Dichlorobenzene ND 0.0100 10 10/05/2022 08:48 WG1937343 Dichlorodifluoromethane ND 0.0500 10 10/05/2022 08:48 WG1937343 1,1-Dichloroethane ND 0.0100 10 10/05/2022 08:48 WG1937343 1,2-Dichloroethane ND 0.0100 10 10/05/2022 08:48 WG1937343 1,1-Dichloroethene ND 0.0100 10 10/05/2022 08:48 WG1937343 cis-1,2-Dichloroethene ND 0.0100 10 10/05/2022 08:48 WG1937343 trans-1,2-Dichloroethene ND 0.0100 10 10/05/2022 08:48 WG1937343 1,2-Dichloropropane ND 0.0100 10 10/05/2022 08:48 WG1937343 1,1-Dichloropropene ND 0.0100 10 10/05/2022 08:48 WG1937343 1,3-Dichloropropane ND 0.0100 10 10/05/2022 08:48 WG1937343 cis-1,3-Dichloropropene ND 0.0100 10 10/05/2022 08:48 WG1937343 trans-1,3-Dichloropropene ND 0.0100 10 10/05/2022 08:48 WG1937343 2,2-Dichloropropane ND 0.0100 10 10/05/2022 08:48 WG1937343 Di-isopropyl ether ND 0.0100 10 10/05/2022 08:48 WG1937343 Ethylbenzene ND 0.0100 10 10/05/2022 08:48 WG1937343 Hexachloro-1,3-butadiene ND 0.0100 10 10/05/2022 08:48 WG1937343 Isopropylbenzene ND 0.0100 10 10/05/2022 08:48 WG1937343 p-Isopropyltoluene ND 0.0100 10 10/05/2022 08:48 WG1937343 2-Butanone (MEK)0.812 0.100 10 10/05/2022 08:48 WG1937343 Methylene Chloride ND 0.0500 10 10/05/2022 08:48 WG1937343 4-Methyl-2-pentanone (MIBK) 0.378 0.100 10 10/05/2022 08:48 WG1937343 Methyl tert-butyl ether ND 0.0100 10 10/05/2022 08:48 WG1937343 Naphthalene ND J4 0.0500 10 10/05/2022 08:48 WG1937343 n-Propylbenzene ND 0.0100 10 10/05/2022 08:48 WG1937343 Styrene ND 0.0100 10 10/05/2022 08:48 WG1937343 1,1,1,2-Tetrachloroethane ND 0.0100 10 10/05/2022 08:48 WG1937343 1,1,2,2-Tetrachloroethane ND 0.0100 10 10/05/2022 08:48 WG1937343 1,1,2-Trichlorotrifluoroethane ND 0.0100 10 10/05/2022 08:48 WG1937343 Tetrachloroethene ND 0.0100 10 10/05/2022 08:48 WG1937343 Toluene 0.0201 0.0100 10 10/05/2022 08:48 WG1937343 1,2,3-Trichlorobenzene ND 0.0100 10 10/05/2022 08:48 WG1937343 1,2,4-Trichlorobenzene ND 0.0100 10 10/05/2022 08:48 WG1937343 1,1,1-Trichloroethane ND 0.0100 10 10/05/2022 08:48 WG1937343 1,1,2-Trichloroethane ND 0.0100 10 10/05/2022 08:48 WG1937343 Trichloroethene ND 0.0100 10 10/05/2022 08:48 WG1937343 Trichlorofluoromethane ND 0.0500 10 10/05/2022 08:48 WG1937343 1,2,3-Trichloropropane ND 0.0250 10 10/05/2022 08:48 WG1937343 1,2,4-Trimethylbenzene ND 0.0100 10 10/05/2022 08:48 WG1937343 1,2,3-Trimethylbenzene ND 0.0100 10 10/05/2022 08:48 WG1937343 1,3,5-Trimethylbenzene ND 0.0100 10 10/05/2022 08:48 WG1937343 Vinyl chloride ND 0.0100 10 10/05/2022 08:48 WG1937343 Xylenes, Total ND 0.0300 10 10/05/2022 08:48 WG1937343 (S) Toluene-d8 110 80.0-120 10/05/2022 08:48 WG1937343 (S) 4-Bromofluorobenzene 104 77.0-126 10/05/2022 08:48 WG1937343 (S) 1,2-Dichloroethane-d4 109 70.0-130 10/05/2022 08:48 WG1937343 Sample Narrative: L1540992-03 WG1937343: Dilution due to foam. Semi-Volatile Organic Compounds (GC) by Method 8015 Result Qualifier RDL Dilution Analysis Batch Analyte mg/l mg/l date / time C10-C28 Diesel Range 70.2 J3 1.00 10 10/17/2022 11:19 WG1938188 C28-C40 Oil Range 2.43 0.100 1 10/14/2022 10:29 WG1938188 (S) o-Terphenyl 0.000 J2 52.0-156 10/14/2022 10:29 WG1938188 (S) o-Terphenyl 0.000 J2 52.0-156 10/17/2022 11:19 WG1938188 1 Cp 2 Tc 3 Ss 4 Cn 5 Sr 6 Qc 7 Gl 8 Al 9 Sc ACCOUNT:PROJECT:SDG:DATE/TIME:PAGE: Tetra Tech Inc. - UT L1540992 10/17/22 15:01 14 of 64 ACCOUNT:PROJECT:SDG:DATE/TIME:PAGE: Tetra Tech Inc. - UT L1540992 10/17/22 15:23 14 of 64 SAMPLE RESULTS - 03 L1540992 TRENCH-SW Collected date/time: 09/27/22 16:11 Semi-Volatile Organic Compounds (GC) by Method 8015 Result Qualifier RDL Dilution Analysis Batch Analyte mg/l mg/l date / time Sample Narrative: L1540992-03 WG1938188: Surrogate failure due to matrix interference Semi Volatile Organic Compounds (GC/MS) by Method 8270C Result Qualifier RDL Dilution Analysis Batch Analyte mg/l mg/l date / time Acenaphthene ND 0.00500 5 10/06/2022 03:36 WG1936344 Acenaphthylene ND 0.00500 5 10/06/2022 03:36 WG1936344 Anthracene ND 0.00500 5 10/06/2022 03:36 WG1936344 Benzidine ND J4 0.0500 5 10/06/2022 03:36 WG1936344 Benzo(a)anthracene ND 0.00500 5 10/06/2022 03:36 WG1936344 Benzo(b)fluoranthene ND 0.00500 5 10/06/2022 03:36 WG1936344 Benzo(k)fluoranthene ND 0.00500 5 10/06/2022 03:36 WG1936344 Benzo(g,h,i)perylene ND 0.00500 5 10/06/2022 03:36 WG1936344 Benzo(a)pyrene ND 0.00500 5 10/06/2022 03:36 WG1936344 Bis(2-chlorethoxy)methane ND 0.0500 5 10/06/2022 03:36 WG1936344 Bis(2-chloroethyl)ether ND 0.0500 5 10/06/2022 03:36 WG1936344 2,2-Oxybis(1-Chloropropane) ND 0.0500 5 10/06/2022 03:36 WG1936344 4-Bromophenyl-phenylether ND 0.0500 5 10/06/2022 03:36 WG1936344 2-Chloronaphthalene ND 0.00500 5 10/06/2022 03:36 WG1936344 4-Chlorophenyl-phenylether ND 0.0500 5 10/06/2022 03:36 WG1936344 Chrysene ND 0.00500 5 10/06/2022 03:36 WG1936344 Dibenz(a,h)anthracene ND 0.00500 5 10/06/2022 03:36 WG1936344 1,2-Dichlorobenzene ND 0.0500 5 10/06/2022 03:36 WG1936344 1,3-Dichlorobenzene ND 0.0500 5 10/06/2022 03:36 WG1936344 1,4-Dichlorobenzene ND 0.0500 5 10/06/2022 03:36 WG1936344 3,3-Dichlorobenzidine ND 0.0500 5 10/06/2022 03:36 WG1936344 2,4-Dinitrotoluene ND 0.0500 5 10/06/2022 03:36 WG1936344 2,6-Dinitrotoluene ND 0.0500 5 10/06/2022 03:36 WG1936344 Fluoranthene ND 0.00500 5 10/06/2022 03:36 WG1936344 Fluorene ND 0.00500 5 10/06/2022 03:36 WG1936344 Hexachlorobenzene ND 0.00500 5 10/06/2022 03:36 WG1936344 Hexachloro-1,3-butadiene ND 0.0500 5 10/06/2022 03:36 WG1936344 Hexachlorocyclopentadiene ND 0.0500 5 10/06/2022 03:36 WG1936344 Hexachloroethane ND 0.0500 5 10/06/2022 03:36 WG1936344 Indeno(1,2,3-cd)pyrene ND 0.00500 5 10/06/2022 03:36 WG1936344 Isophorone ND 0.0500 5 10/06/2022 03:36 WG1936344 Naphthalene ND 0.00500 5 10/06/2022 03:36 WG1936344 Nitrobenzene ND 0.0500 5 10/06/2022 03:36 WG1936344 n-Nitrosodimethylamine ND 0.0500 5 10/06/2022 03:36 WG1936344 n-Nitrosodiphenylamine ND 0.0500 5 10/06/2022 03:36 WG1936344 n-Nitrosodi-n-propylamine ND 0.0500 5 10/06/2022 03:36 WG1936344 Phenanthrene ND 0.00500 5 10/06/2022 03:36 WG1936344 Benzylbutyl phthalate ND 0.0150 5 10/06/2022 03:36 WG1936344 Bis(2-ethylhexyl)phthalate ND 0.0150 5 10/06/2022 03:36 WG1936344 Di-n-butyl phthalate ND 0.0150 5 10/06/2022 03:36 WG1936344 Diethyl phthalate ND 0.0150 5 10/06/2022 03:36 WG1936344 Dimethyl phthalate ND 0.0150 5 10/06/2022 03:36 WG1936344 Di-n-octyl phthalate ND 0.0150 5 10/06/2022 03:36 WG1936344 Pyrene ND 0.00500 5 10/06/2022 03:36 WG1936344 1,2,4-Trichlorobenzene ND 0.0500 5 10/06/2022 03:36 WG1936344 4-Chloro-3-methylphenol ND 0.0500 5 10/06/2022 03:36 WG1936344 2-Chlorophenol ND 0.0500 5 10/06/2022 03:36 WG1936344 2,4-Dichlorophenol ND 0.0500 5 10/06/2022 03:36 WG1936344 2,4-Dimethylphenol ND 0.0500 5 10/06/2022 03:36 WG1936344 1 Cp 2 Tc 3 Ss 4 Cn 5 Sr 6 Qc 7 Gl 8 Al 9 Sc ACCOUNT:PROJECT:SDG:DATE/TIME:PAGE: Tetra Tech Inc. - UT L1540992 10/17/22 15:01 15 of 64 ACCOUNT:PROJECT:SDG:DATE/TIME:PAGE: Tetra Tech Inc. - UT L1540992 10/17/22 15:23 15 of 64 SAMPLE RESULTS - 03 L1540992 TRENCH-SW Collected date/time: 09/27/22 16:11 Semi Volatile Organic Compounds (GC/MS) by Method 8270C Result Qualifier RDL Dilution Analysis Batch Analyte mg/l mg/l date / time 4,6-Dinitro-2-methylphenol ND 0.0500 5 10/06/2022 03:36 WG1936344 2,4-Dinitrophenol ND 0.0500 5 10/06/2022 03:36 WG1936344 2-Nitrophenol ND 0.0500 5 10/06/2022 03:36 WG1936344 4-Nitrophenol ND 0.0500 5 10/06/2022 03:36 WG1936344 Pentachlorophenol ND 0.0500 5 10/06/2022 03:36 WG1936344 Phenol 0.277 0.0500 5 10/06/2022 03:36 WG1936344 2,4,6-Trichlorophenol ND 0.0500 5 10/06/2022 03:36 WG1936344 (S) 2-Fluorophenol 25.8 10.0-120 10/06/2022 03:36 WG1936344 (S) Phenol-d5 26.0 10.0-120 10/06/2022 03:36 WG1936344 (S) Nitrobenzene-d5 61.1 10.0-127 10/06/2022 03:36 WG1936344 (S) 2-Fluorobiphenyl 24.8 10.0-130 10/06/2022 03:36 WG1936344 (S) 2,4,6-Tribromophenol 55.5 10.0-155 10/06/2022 03:36 WG1936344 (S) p-Terphenyl-d14 21.5 10.0-128 10/06/2022 03:36 WG1936344 Sample Narrative: L1540992-03 WG1936344: Dilution due to matrix. 1 Cp 2 Tc 3 Ss 4 Cn 5 Sr 6 Qc 7 Gl 8 Al 9 Sc ACCOUNT:PROJECT:SDG:DATE/TIME:PAGE: Tetra Tech Inc. - UT L1540992 10/17/22 15:01 16 of 64 ACCOUNT:PROJECT:SDG:DATE/TIME:PAGE: Tetra Tech Inc. - UT L1540992 10/17/22 15:23 16 of 64 SAMPLE RESULTS - 04 L1540992 INLET-SW Collected date/time: 09/27/22 16:47 Mercury by Method 7470A Result Qualifier RDL Dilution Analysis Batch Analyte mg/l mg/l date / time Mercury ND 0.000200 1 10/14/2022 12:38 WG1936171 Metals (ICP) by Method 6010B Result Qualifier RDL Dilution Analysis Batch Analyte mg/l mg/l date / time Antimony ND 0.0100 1 10/11/2022 11:35 WG1940066 Arsenic 0.0582 0.0100 1 10/11/2022 11:35 WG1940066 Beryllium ND 0.00200 1 10/11/2022 11:35 WG1940066 Cadmium ND 0.00200 1 10/11/2022 11:35 WG1940066 Chromium ND 0.0100 1 10/11/2022 11:35 WG1940066 Copper 0.0125 0.0100 1 10/11/2022 11:35 WG1940066 Lead ND 0.00600 1 10/11/2022 11:35 WG1940066 Nickel ND 0.0100 1 10/11/2022 11:35 WG1940066 Selenium ND 0.0100 1 10/11/2022 11:35 WG1940066 Silver ND 0.00500 1 10/11/2022 11:35 WG1940066 Thallium ND 0.0100 1 10/11/2022 11:35 WG1940066 Zinc ND 0.0500 1 10/11/2022 11:35 WG1940066 Volatile Organic Compounds (GC) by Method 8015D/GRO Result Qualifier RDL Dilution Analysis Batch Analyte mg/l mg/l date / time TPH (GC/FID) Low Fraction 0.165 B 0.100 1 10/03/2022 16:51 WG1936401 (S) a,a,a-Trifluorotoluene(FID) 109 78.0-120 10/03/2022 16:51 WG1936401 Volatile Organic Compounds (GC/MS) by Method 8260B Result Qualifier RDL Dilution Analysis Batch Analyte mg/l mg/l date / time Acetone ND 0.0500 1 10/05/2022 08:27 WG1937343 Acrolein ND 0.0500 1 10/05/2022 08:27 WG1937343 Acrylonitrile ND 0.0100 1 10/05/2022 08:27 WG1937343 Benzene ND 0.00100 1 10/05/2022 08:27 WG1937343 Bromobenzene ND 0.00100 1 10/05/2022 08:27 WG1937343 Bromodichloromethane ND 0.00100 1 10/05/2022 08:27 WG1937343 Bromoform ND 0.00100 1 10/05/2022 08:27 WG1937343 Bromomethane ND J3 J4 0.00500 1 10/05/2022 08:27 WG1937343 n-Butylbenzene ND 0.00100 1 10/05/2022 08:27 WG1937343 sec-Butylbenzene ND 0.00100 1 10/05/2022 08:27 WG1937343 tert-Butylbenzene ND 0.00100 1 10/05/2022 08:27 WG1937343 Carbon tetrachloride ND 0.00100 1 10/05/2022 08:27 WG1937343 Chlorobenzene ND 0.00100 1 10/05/2022 08:27 WG1937343 Chlorodibromomethane ND 0.00100 1 10/05/2022 08:27 WG1937343 Chloroethane ND 0.00500 1 10/05/2022 08:27 WG1937343 Chloroform ND 0.00500 1 10/05/2022 08:27 WG1937343 Chloromethane ND 0.00250 1 10/05/2022 08:27 WG1937343 2-Chlorotoluene ND 0.00100 1 10/05/2022 08:27 WG1937343 4-Chlorotoluene ND 0.00100 1 10/05/2022 08:27 WG1937343 1,2-Dibromo-3-Chloropropane ND 0.00500 1 10/05/2022 08:27 WG1937343 1,2-Dibromoethane ND 0.00100 1 10/05/2022 08:27 WG1937343 Dibromomethane ND 0.00100 1 10/05/2022 08:27 WG1937343 1,2-Dichlorobenzene ND 0.00100 1 10/05/2022 08:27 WG1937343 1,3-Dichlorobenzene ND 0.00100 1 10/05/2022 08:27 WG1937343 1,4-Dichlorobenzene ND 0.00100 1 10/05/2022 08:27 WG1937343 Dichlorodifluoromethane ND 0.00500 1 10/05/2022 08:27 WG1937343 1,1-Dichloroethane ND 0.00100 1 10/05/2022 08:27 WG1937343 1 Cp 2 Tc 3 Ss 4 Cn 5 Sr 6 Qc 7 Gl 8 Al 9 Sc ACCOUNT:PROJECT:SDG:DATE/TIME:PAGE: Tetra Tech Inc. - UT L1540992 10/17/22 15:01 17 of 64 ACCOUNT:PROJECT:SDG:DATE/TIME:PAGE: Tetra Tech Inc. - UT L1540992 10/17/22 15:23 17 of 64 SAMPLE RESULTS - 04 L1540992 INLET-SW Collected date/time: 09/27/22 16:47 Volatile Organic Compounds (GC/MS) by Method 8260B Result Qualifier RDL Dilution Analysis Batch Analyte mg/l mg/l date / time 1,2-Dichloroethane ND 0.00100 1 10/05/2022 08:27 WG1937343 1,1-Dichloroethene ND 0.00100 1 10/05/2022 08:27 WG1937343 cis-1,2-Dichloroethene ND 0.00100 1 10/05/2022 08:27 WG1937343 trans-1,2-Dichloroethene ND 0.00100 1 10/05/2022 08:27 WG1937343 1,2-Dichloropropane ND 0.00100 1 10/05/2022 08:27 WG1937343 1,1-Dichloropropene ND 0.00100 1 10/05/2022 08:27 WG1937343 1,3-Dichloropropane ND 0.00100 1 10/05/2022 08:27 WG1937343 cis-1,3-Dichloropropene ND 0.00100 1 10/05/2022 08:27 WG1937343 trans-1,3-Dichloropropene ND 0.00100 1 10/05/2022 08:27 WG1937343 2,2-Dichloropropane ND 0.00100 1 10/05/2022 08:27 WG1937343 Di-isopropyl ether ND 0.00100 1 10/05/2022 08:27 WG1937343 Ethylbenzene ND 0.00100 1 10/05/2022 08:27 WG1937343 Hexachloro-1,3-butadiene ND 0.00100 1 10/05/2022 08:27 WG1937343 Isopropylbenzene ND 0.00100 1 10/05/2022 08:27 WG1937343 p-Isopropyltoluene ND 0.00100 1 10/05/2022 08:27 WG1937343 2-Butanone (MEK)0.0353 0.0100 1 10/05/2022 08:27 WG1937343 Methylene Chloride ND 0.00500 1 10/05/2022 08:27 WG1937343 4-Methyl-2-pentanone (MIBK) 0.0357 0.0100 1 10/05/2022 08:27 WG1937343 Methyl tert-butyl ether ND 0.00100 1 10/05/2022 08:27 WG1937343 Naphthalene ND J4 0.00500 1 10/05/2022 08:27 WG1937343 n-Propylbenzene ND 0.00100 1 10/05/2022 08:27 WG1937343 Styrene ND 0.00100 1 10/05/2022 08:27 WG1937343 1,1,1,2-Tetrachloroethane ND 0.00100 1 10/05/2022 08:27 WG1937343 1,1,2,2-Tetrachloroethane ND 0.00100 1 10/05/2022 08:27 WG1937343 1,1,2-Trichlorotrifluoroethane ND 0.00100 1 10/05/2022 08:27 WG1937343 Tetrachloroethene ND 0.00100 1 10/05/2022 08:27 WG1937343 Toluene 0.0493 0.00100 1 10/05/2022 08:27 WG1937343 1,2,3-Trichlorobenzene ND 0.00100 1 10/05/2022 08:27 WG1937343 1,2,4-Trichlorobenzene ND 0.00100 1 10/05/2022 08:27 WG1937343 1,1,1-Trichloroethane ND 0.00100 1 10/05/2022 08:27 WG1937343 1,1,2-Trichloroethane ND 0.00100 1 10/05/2022 08:27 WG1937343 Trichloroethene ND 0.00100 1 10/05/2022 08:27 WG1937343 Trichlorofluoromethane ND 0.00500 1 10/05/2022 08:27 WG1937343 1,2,3-Trichloropropane ND 0.00250 1 10/05/2022 08:27 WG1937343 1,2,4-Trimethylbenzene ND 0.00100 1 10/05/2022 08:27 WG1937343 1,2,3-Trimethylbenzene ND 0.00100 1 10/05/2022 08:27 WG1937343 1,3,5-Trimethylbenzene ND 0.00100 1 10/05/2022 08:27 WG1937343 Vinyl chloride ND 0.00100 1 10/05/2022 08:27 WG1937343 Xylenes, Total ND 0.00300 1 10/05/2022 08:27 WG1937343 (S) Toluene-d8 113 80.0-120 10/05/2022 08:27 WG1937343 (S) 4-Bromofluorobenzene 97.2 77.0-126 10/05/2022 08:27 WG1937343 (S) 1,2-Dichloroethane-d4 111 70.0-130 10/05/2022 08:27 WG1937343 Semi-Volatile Organic Compounds (GC) by Method 8015 Result Qualifier RDL Dilution Analysis Batch Analyte mg/l mg/l date / time C10-C28 Diesel Range 3.03 J3 0.100 1 10/11/2022 04:32 WG1938188 C28-C40 Oil Range ND 0.100 1 10/11/2022 04:32 WG1938188 (S) o-Terphenyl 89.5 52.0-156 10/11/2022 04:32 WG1938188 1 Cp 2 Tc 3 Ss 4 Cn 5 Sr 6 Qc 7 Gl 8 Al 9 Sc ACCOUNT:PROJECT:SDG:DATE/TIME:PAGE: Tetra Tech Inc. - UT L1540992 10/17/22 15:01 18 of 64 ACCOUNT:PROJECT:SDG:DATE/TIME:PAGE: Tetra Tech Inc. - UT L1540992 10/17/22 15:23 18 of 64 SAMPLE RESULTS - 04 L1540992 INLET-SW Collected date/time: 09/27/22 16:47 Semi Volatile Organic Compounds (GC/MS) by Method 8270C Result Qualifier RDL Dilution Analysis Batch Analyte mg/l mg/l date / time Acenaphthene ND 0.00105 1.05 10/06/2022 01:50 WG1936344 Acenaphthylene ND 0.00105 1.05 10/06/2022 01:50 WG1936344 Anthracene ND 0.00105 1.05 10/06/2022 01:50 WG1936344 Benzidine ND J4 0.0105 1.05 10/06/2022 01:50 WG1936344 Benzo(a)anthracene ND 0.00105 1.05 10/06/2022 01:50 WG1936344 Benzo(b)fluoranthene ND 0.00105 1.05 10/06/2022 01:50 WG1936344 Benzo(k)fluoranthene ND 0.00105 1.05 10/06/2022 01:50 WG1936344 Benzo(g,h,i)perylene ND 0.00105 1.05 10/06/2022 01:50 WG1936344 Benzo(a)pyrene ND 0.00105 1.05 10/06/2022 01:50 WG1936344 Bis(2-chlorethoxy)methane ND 0.0105 1.05 10/06/2022 01:50 WG1936344 Bis(2-chloroethyl)ether ND 0.0105 1.05 10/06/2022 01:50 WG1936344 2,2-Oxybis(1-Chloropropane) ND 0.0105 1.05 10/06/2022 01:50 WG1936344 4-Bromophenyl-phenylether ND 0.0105 1.05 10/06/2022 01:50 WG1936344 2-Chloronaphthalene ND 0.00105 1.05 10/06/2022 01:50 WG1936344 4-Chlorophenyl-phenylether ND 0.0105 1.05 10/06/2022 01:50 WG1936344 Chrysene ND 0.00105 1.05 10/06/2022 01:50 WG1936344 Dibenz(a,h)anthracene ND 0.00105 1.05 10/06/2022 01:50 WG1936344 1,2-Dichlorobenzene ND 0.0105 1.05 10/06/2022 01:50 WG1936344 1,3-Dichlorobenzene ND 0.0105 1.05 10/06/2022 01:50 WG1936344 1,4-Dichlorobenzene ND 0.0105 1.05 10/06/2022 01:50 WG1936344 3,3-Dichlorobenzidine ND 0.0105 1.05 10/06/2022 01:50 WG1936344 2,4-Dinitrotoluene ND 0.0105 1.05 10/06/2022 01:50 WG1936344 2,6-Dinitrotoluene ND 0.0105 1.05 10/06/2022 01:50 WG1936344 Fluoranthene ND 0.00105 1.05 10/06/2022 01:50 WG1936344 Fluorene ND 0.00105 1.05 10/06/2022 01:50 WG1936344 Hexachlorobenzene ND 0.00105 1.05 10/06/2022 01:50 WG1936344 Hexachloro-1,3-butadiene ND 0.0105 1.05 10/06/2022 01:50 WG1936344 Hexachlorocyclopentadiene ND 0.0105 1.05 10/06/2022 01:50 WG1936344 Hexachloroethane ND 0.0105 1.05 10/06/2022 01:50 WG1936344 Indeno(1,2,3-cd)pyrene ND 0.00105 1.05 10/06/2022 01:50 WG1936344 Isophorone ND 0.0105 1.05 10/06/2022 01:50 WG1936344 Naphthalene ND 0.00105 1.05 10/06/2022 01:50 WG1936344 Nitrobenzene ND 0.0105 1.05 10/06/2022 01:50 WG1936344 n-Nitrosodimethylamine ND 0.0105 1.05 10/06/2022 01:50 WG1936344 n-Nitrosodiphenylamine ND 0.0105 1.05 10/06/2022 01:50 WG1936344 n-Nitrosodi-n-propylamine ND 0.0105 1.05 10/06/2022 01:50 WG1936344 Phenanthrene ND 0.00105 1.05 10/06/2022 01:50 WG1936344 Benzylbutyl phthalate ND 0.00315 1.05 10/06/2022 01:50 WG1936344 Bis(2-ethylhexyl)phthalate ND 0.00315 1.05 10/06/2022 01:50 WG1936344 Di-n-butyl phthalate ND 0.00315 1.05 10/06/2022 01:50 WG1936344 Diethyl phthalate ND 0.00315 1.05 10/06/2022 01:50 WG1936344 Dimethyl phthalate ND 0.00315 1.05 10/06/2022 01:50 WG1936344 Di-n-octyl phthalate ND 0.00315 1.05 10/06/2022 01:50 WG1936344 Pyrene ND 0.00105 1.05 10/06/2022 01:50 WG1936344 1,2,4-Trichlorobenzene ND 0.0105 1.05 10/06/2022 01:50 WG1936344 4-Chloro-3-methylphenol ND 0.0105 1.05 10/06/2022 01:50 WG1936344 2-Chlorophenol ND 0.0105 1.05 10/06/2022 01:50 WG1936344 2,4-Dichlorophenol ND 0.0105 1.05 10/06/2022 01:50 WG1936344 2,4-Dimethylphenol ND 0.0105 1.05 10/06/2022 01:50 WG1936344 4,6-Dinitro-2-methylphenol ND 0.0105 1.05 10/06/2022 01:50 WG1936344 2,4-Dinitrophenol ND 0.0105 1.05 10/06/2022 01:50 WG1936344 2-Nitrophenol ND 0.0105 1.05 10/06/2022 01:50 WG1936344 4-Nitrophenol ND 0.0105 1.05 10/06/2022 01:50 WG1936344 Pentachlorophenol ND 0.0105 1.05 10/06/2022 01:50 WG1936344 Phenol 0.0105 0.0105 1.05 10/06/2022 01:50 WG1936344 2,4,6-Trichlorophenol ND 0.0105 1.05 10/06/2022 01:50 WG1936344 1 Cp 2 Tc 3 Ss 4 Cn 5 Sr 6 Qc 7 Gl 8 Al 9 Sc ACCOUNT:PROJECT:SDG:DATE/TIME:PAGE: Tetra Tech Inc. - UT L1540992 10/17/22 15:01 19 of 64 ACCOUNT:PROJECT:SDG:DATE/TIME:PAGE: Tetra Tech Inc. - UT L1540992 10/17/22 15:23 19 of 64 SAMPLE RESULTS - 04 L1540992 INLET-SW Collected date/time: 09/27/22 16:47 Semi Volatile Organic Compounds (GC/MS) by Method 8270C Result Qualifier RDL Dilution Analysis Batch Analyte mg/l mg/l date / time (S) 2-Fluorophenol 32.2 10.0-120 10/06/2022 01:50 WG1936344 (S) Phenol-d5 22.6 10.0-120 10/06/2022 01:50 WG1936344 (S) Nitrobenzene-d5 78.4 10.0-127 10/06/2022 01:50 WG1936344 (S) 2-Fluorobiphenyl 77.7 10.0-130 10/06/2022 01:50 WG1936344 (S) 2,4,6-Tribromophenol 80.5 10.0-155 10/06/2022 01:50 WG1936344 (S) p-Terphenyl-d14 68.0 10.0-128 10/06/2022 01:50 WG1936344 1 Cp 2 Tc 3 Ss 4 Cn 5 Sr 6 Qc 7 Gl 8 Al 9 Sc ACCOUNT:PROJECT:SDG:DATE/TIME:PAGE: Tetra Tech Inc. - UT L1540992 10/17/22 15:01 20 of 64 ACCOUNT:PROJECT:SDG:DATE/TIME:PAGE: Tetra Tech Inc. - UT L1540992 10/17/22 15:23 20 of 64 QUALITY CONTROL SUMMARYWG1935121 Total Solids by Method 2540 G-2011 L1540992-01,02 Method Blank (MB) (MB) R3844107-1 10/01/22 15:56 MB Result MB Qualifier MB MDL MB RDL Analyte %%% Total Solids 0.00100 L1540973-08 Original Sample (OS) • Duplicate (DUP) (OS) L1540973-08 10/01/22 15:56 • (DUP) R3844107-3 10/01/22 15:56 Original Result DUP Result Dilution DUP RPD DUP Qualifier DUP RPD Limits Analyte %%%% Total Solids 95.4 96.1 1 0.774 10 Laboratory Control Sample (LCS) (LCS) R3844107-2 10/01/22 15:56 Spike Amount LCS Result LCS Rec. Rec. Limits LCS Qualifier Analyte %%%% Total Solids 50.0 50.0 100 85.0-115 1 Cp 2 Tc 3 Ss 4 Cn 5 Sr 6 Qc 7 Gl 8 Al 9 Sc ACCOUNT:PROJECT:SDG:DATE/TIME:PAGE: Tetra Tech Inc. - UT L1540992 10/17/22 15:01 21 of 64 ACCOUNT:PROJECT:SDG:DATE/TIME:PAGE: Tetra Tech Inc. - UT L1540992 10/17/22 15:23 21 of 64 QUALITY CONTROL SUMMARYWG1936171 Mercury by Method 7470A L1540992-03,04 Method Blank (MB) (MB) R3848599-1 10/14/22 11:58 MB Result MB Qualifier MB MDL MB RDL Analyte mg/l mg/l mg/l Mercury U 0.000100 0.000200 Laboratory Control Sample (LCS) (LCS) R3848599-2 10/14/22 12:01 Spike Amount LCS Result LCS Rec. Rec. Limits LCS Qualifier Analyte mg/l mg/l %% Mercury 0.00300 0.00302 101 80.0-120 L1540970-01 Original Sample (OS) • Matrix Spike (MS) • Matrix Spike Duplicate (MSD) (OS) L1540970-01 10/14/22 12:07 • (MS) R3848599-3 10/14/22 12:09 • (MSD) R3848599-4 10/14/22 12:12 Spike Amount Original Result MS Result MSD Result MS Rec. MSD Rec. Dilution Rec. Limits MS Qualifier MSD Qualifier RPD RPD Limits Analyte mg/l mg/l mg/l mg/l %%%%% Mercury 0.00300 ND 0.00224 0.00219 74.7 73.0 1 75.0-125 J6 J6 2.26 20 1 Cp 2 Tc 3 Ss 4 Cn 5 Sr 6 Qc 7 Gl 8 Al 9 Sc ACCOUNT:PROJECT:SDG:DATE/TIME:PAGE: Tetra Tech Inc. - UT L1540992 10/17/22 15:01 22 of 64 ACCOUNT:PROJECT:SDG:DATE/TIME:PAGE: Tetra Tech Inc. - UT L1540992 10/17/22 15:23 22 of 64 QUALITY CONTROL SUMMARYWG1936004 Mercury by Method 7471A L1540992-01,02 Method Blank (MB) (MB) R3845494-1 10/06/22 13:48 MB Result MB Qualifier MB MDL MB RDL Analyte mg/kg mg/kg mg/kg Mercury U 0.0180 0.0400 Laboratory Control Sample (LCS) (LCS) R3845494-2 10/06/22 13:51 Spike Amount LCS Result LCS Rec. Rec. Limits LCS Qualifier Analyte mg/kg mg/kg %% Mercury 0.500 0.514 103 80.0-120 L1540973-02 Original Sample (OS) • Matrix Spike (MS) • Matrix Spike Duplicate (MSD) (OS) L1540973-02 10/06/22 13:54 • (MS) R3845494-3 10/06/22 15:12 • (MSD) R3845494-4 10/06/22 15:15 Spike Amount (dry) Original Result (dry)MS Result (dry)MSD Result (dry)MS Rec. MSD Rec. Dilution Rec. Limits MS Qualifier MSD Qualifier RPD RPD Limits Analyte mg/kg mg/kg mg/kg mg/kg %%%%% Mercury 0.602 0.0781 0.652 0.721 95.4 107 1 75.0-125 10.0 20 1 Cp 2 Tc 3 Ss 4 Cn 5 Sr 6 Qc 7 Gl 8 Al 9 Sc ACCOUNT:PROJECT:SDG:DATE/TIME:PAGE: Tetra Tech Inc. - UT L1540992 10/17/22 15:01 23 of 64 ACCOUNT:PROJECT:SDG:DATE/TIME:PAGE: Tetra Tech Inc. - UT L1540992 10/17/22 15:23 23 of 64 QUALITY CONTROL SUMMARYWG1937004 Metals (ICP) by Method 6010B L1540992-01,02 Method Blank (MB) (MB) R3846862-1 10/10/22 19:00 MB Result MB Qualifier MB MDL MB RDL Analyte mg/kg mg/kg mg/kg Antimony U 0.544 2.00 Arsenic U 0.518 2.00 Beryllium U 0.0315 0.200 Cadmium U 0.0471 0.500 Chromium U 0.133 1.00 Copper U 0.400 2.00 Lead U 0.208 0.500 Nickel U 0.132 2.00 Selenium U 0.764 2.00 Silver U 0.127 1.00 Thallium U 0.394 2.00 Zinc U 0.832 5.00 Laboratory Control Sample (LCS) (LCS) R3846862-2 10/10/22 19:03 Spike Amount LCS Result LCS Rec. Rec. Limits LCS Qualifier Analyte mg/kg mg/kg %% Antimony 100 97.6 97.6 80.0-120 Arsenic 100 98.1 98.1 80.0-120 Beryllium 100 105 105 80.0-120 Cadmium 100 103 103 80.0-120 Chromium 100 105 105 80.0-120 Copper 100 102 102 80.0-120 Lead 100 97.0 97.0 80.0-120 Nickel 100 101 101 80.0-120 Selenium 100 98.5 98.5 80.0-120 Silver 20.0 19.5 97.6 80.0-120 Thallium 100 97.0 97.0 80.0-120 Zinc 100 98.2 98.2 80.0-120 L1540973-02 Original Sample (OS) • Matrix Spike (MS) • Matrix Spike Duplicate (MSD) (OS) L1540973-02 10/10/22 19:06 • (MS) R3846862-5 10/10/22 19:15 • (MSD) R3846862-6 10/10/22 19:17 Spike Amount (dry) Original Result (dry)MS Result (dry)MSD Result (dry)MS Rec. MSD Rec. Dilution Rec. Limits MS Qualifier MSD Qualifier RPD RPD Limits Analyte mg/kg mg/kg mg/kg mg/kg %%%%% Antimony 120 13.3 126 139 93.5 104 1 75.0-125 9.73 20 Arsenic 120 3.95 125 129 100 104 1 75.0-125 3.77 20 1 Cp 2 Tc 3 Ss 4 Cn 5 Sr 6 Qc 7 Gl 8 Al 9 Sc ACCOUNT:PROJECT:SDG:DATE/TIME:PAGE: Tetra Tech Inc. - UT L1540992 10/17/22 15:01 24 of 64 ACCOUNT:PROJECT:SDG:DATE/TIME:PAGE: Tetra Tech Inc. - UT L1540992 10/17/22 15:23 24 of 64 QUALITY CONTROL SUMMARYWG1937004 Metals (ICP) by Method 6010B L1540992-01,02 L1540973-02 Original Sample (OS) • Matrix Spike (MS) • Matrix Spike Duplicate (MSD) (OS) L1540973-02 10/10/22 19:06 • (MS) R3846862-5 10/10/22 19:15 • (MSD) R3846862-6 10/10/22 19:17 Spike Amount (dry) Original Result (dry)MS Result (dry)MSD Result (dry)MS Rec. MSD Rec. Dilution Rec. Limits MS Qualifier MSD Qualifier RPD RPD Limits Analyte mg/kg mg/kg mg/kg mg/kg %%%%% Beryllium 120 ND 122 128 101 106 1 75.0-125 4.71 20 Cadmium 120 0.757 126 131 104 108 1 75.0-125 4.15 20 Chromium 120 25.5 133 142 89.1 97.1 1 75.0-125 7.02 20 Copper 120 33.2 149 172 96.1 115 1 75.0-125 14.2 20 Lead 120 1110 425 1170 0.000 44.9 1 75.0-125 V J3 V 93.1 20 Nickel 120 8.11 132 134 103 104 1 75.0-125 1.40 20 Selenium 120 ND 121 125 100 104 1 75.0-125 3.04 20 Silver 24.1 ND 24.6 25.4 102 105 1 75.0-125 2.96 20 Thallium 120 ND 105 113 87.1 93.6 1 75.0-125 7.10 20 Zinc 120 102 191 249 74.1 122 1 75.0-125 J6 J3 26.0 20 1 Cp 2 Tc 3 Ss 4 Cn 5 Sr 6 Qc 7 Gl 8 Al 9 Sc ACCOUNT:PROJECT:SDG:DATE/TIME:PAGE: Tetra Tech Inc. - UT L1540992 10/17/22 15:01 25 of 64 ACCOUNT:PROJECT:SDG:DATE/TIME:PAGE: Tetra Tech Inc. - UT L1540992 10/17/22 15:23 25 of 64 QUALITY CONTROL SUMMARYWG1940066 Metals (ICP) by Method 6010B L1540992-04 Method Blank (MB) (MB) R3847217-1 10/11/22 14:31 MB Result MB Qualifier MB MDL MB RDL Analyte mg/l mg/l mg/l Antimony U 0.00430 0.0100 Arsenic U 0.00440 0.0100 Beryllium U 0.000330 0.00200 Cadmium U 0.000479 0.00200 Chromium U 0.00140 0.0100 Copper U 0.00368 0.0100 Lead U 0.00299 0.00600 Nickel U 0.00161 0.0100 Selenium U 0.00735 0.0100 Silver U 0.00154 0.00500 Thallium U 0.00431 0.0100 Zinc U 0.00652 0.0500 Laboratory Control Sample (LCS) (LCS) R3847217-2 10/11/22 14:34 Spike Amount LCS Result LCS Rec. Rec. Limits LCS Qualifier Analyte mg/l mg/l %% Antimony 1.00 0.915 91.5 80.0-120 Arsenic 1.00 0.892 89.2 80.0-120 Beryllium 1.00 0.946 94.6 80.0-120 Cadmium 1.00 0.907 90.7 80.0-120 Chromium 1.00 0.902 90.2 80.0-120 Copper 1.00 0.918 91.8 80.0-120 Lead 1.00 0.888 88.8 80.0-120 Nickel 1.00 0.899 89.9 80.0-120 Selenium 1.00 0.924 92.4 80.0-120 Silver 0.200 0.178 89.1 80.0-120 Thallium 1.00 0.910 91.0 80.0-120 Zinc 1.00 0.916 91.6 80.0-120 L1540970-01 Original Sample (OS) • Matrix Spike (MS) • Matrix Spike Duplicate (MSD) (OS) L1540970-01 10/11/22 14:37 • (MS) R3847217-4 10/11/22 14:42 • (MSD) R3847217-5 10/11/22 14:44 Spike Amount Original Result MS Result MSD Result MS Rec. MSD Rec. Dilution Rec. Limits MS Qualifier MSD Qualifier RPD RPD Limits Analyte mg/l mg/l mg/l mg/l %%%%% Antimony 1.00 ND 0.941 0.939 94.1 93.9 1 75.0-125 0.255 20 Arsenic 1.00 ND 0.924 0.936 91.7 92.8 1 75.0-125 1.20 20 Beryllium 1.00 ND 0.937 0.948 93.7 94.8 1 75.0-125 1.21 20 1 Cp 2 Tc 3 Ss 4 Cn 5 Sr 6 Qc 7 Gl 8 Al 9 Sc ACCOUNT:PROJECT:SDG:DATE/TIME:PAGE: Tetra Tech Inc. - UT L1540992 10/17/22 15:01 26 of 64 ACCOUNT:PROJECT:SDG:DATE/TIME:PAGE: Tetra Tech Inc. - UT L1540992 10/17/22 15:23 26 of 64 QUALITY CONTROL SUMMARYWG1940066 Metals (ICP) by Method 6010B L1540992-04 L1540970-01 Original Sample (OS) • Matrix Spike (MS) • Matrix Spike Duplicate (MSD) (OS) L1540970-01 10/11/22 14:37 • (MS) R3847217-4 10/11/22 14:42 • (MSD) R3847217-5 10/11/22 14:44 Spike Amount Original Result MS Result MSD Result MS Rec. MSD Rec. Dilution Rec. Limits MS Qualifier MSD Qualifier RPD RPD Limits Analyte mg/l mg/l mg/l mg/l %%%%% Cadmium 1.00 ND 0.913 0.923 91.3 92.3 1 75.0-125 1.07 20 Chromium 1.00 ND 0.880 0.885 88.0 88.5 1 75.0-125 0.559 20 Copper 1.00 ND 0.915 0.921 90.9 91.5 1 75.0-125 0.635 20 Lead 1.00 ND 0.870 0.880 86.6 87.6 1 75.0-125 1.16 20 Nickel 1.00 0.0247 0.903 0.909 87.8 88.4 1 75.0-125 0.681 20 Selenium 1.00 ND 0.951 0.954 95.1 95.4 1 75.0-125 0.328 20 Silver 0.200 ND 0.182 0.183 91.1 91.4 1 75.0-125 0.350 20 Thallium 1.00 ND 0.881 0.888 88.1 88.8 1 75.0-125 0.878 20 Zinc 1.00 ND 0.894 0.901 88.6 89.3 1 75.0-125 0.730 20 1 Cp 2 Tc 3 Ss 4 Cn 5 Sr 6 Qc 7 Gl 8 Al 9 Sc ACCOUNT:PROJECT:SDG:DATE/TIME:PAGE: Tetra Tech Inc. - UT L1540992 10/17/22 15:01 27 of 64 ACCOUNT:PROJECT:SDG:DATE/TIME:PAGE: Tetra Tech Inc. - UT L1540992 10/17/22 15:23 27 of 64 QUALITY CONTROL SUMMARYWG1941473 Metals (ICP) by Method 6010B L1540992-03 Method Blank (MB) (MB) R3848739-1 10/14/22 20:23 MB Result MB Qualifier MB MDL MB RDL Analyte mg/l mg/l mg/l Antimony U 0.00430 0.0100 Arsenic U 0.00440 0.0100 Beryllium U 0.000330 0.00200 Cadmium U 0.000479 0.00200 Chromium U 0.00140 0.0100 Copper 0.00574 J 0.00368 0.0100 Lead U 0.00299 0.00600 Nickel U 0.00161 0.0100 Selenium U 0.00735 0.0100 Silver U 0.00154 0.00500 Thallium U 0.00431 0.0100 Zinc U 0.00652 0.0500 Laboratory Control Sample (LCS) (LCS) R3848739-2 10/14/22 20:25 Spike Amount LCS Result LCS Rec. Rec. Limits LCS Qualifier Analyte mg/l mg/l %% Antimony 1.00 0.987 98.7 80.0-120 Arsenic 1.00 0.957 95.7 80.0-120 Beryllium 1.00 0.999 99.9 80.0-120 Cadmium 1.00 0.981 98.1 80.0-120 Chromium 1.00 0.987 98.7 80.0-120 Copper 1.00 0.988 98.8 80.0-120 Lead 1.00 0.997 99.7 80.0-120 Nickel 1.00 0.969 96.9 80.0-120 Selenium 1.00 0.967 96.7 80.0-120 Silver 0.200 0.189 94.3 80.0-120 Thallium 1.00 0.974 97.4 80.0-120 Zinc 1.00 0.964 96.4 80.0-120 L1541428-04 Original Sample (OS) • Matrix Spike (MS) • Matrix Spike Duplicate (MSD) (OS) L1541428-04 10/14/22 20:28 • (MS) R3848739-4 10/14/22 20:33 • (MSD) R3848739-5 10/14/22 20:36 Spike Amount Original Result MS Result MSD Result MS Rec. MSD Rec. Dilution Rec. Limits MS Qualifier MSD Qualifier RPD RPD Limits Analyte mg/l mg/l mg/l mg/l %%%%% Antimony 1.00 ND 0.993 0.982 99.3 98.2 1 75.0-125 1.13 20 Arsenic 1.00 ND 0.972 0.958 97.2 95.8 1 75.0-125 1.46 20 Beryllium 1.00 ND 0.986 0.978 98.6 97.8 1 75.0-125 0.838 20 1 Cp 2 Tc 3 Ss 4 Cn 5 Sr 6 Qc 7 Gl 8 Al 9 Sc ACCOUNT:PROJECT:SDG:DATE/TIME:PAGE: Tetra Tech Inc. - UT L1540992 10/17/22 15:01 28 of 64 ACCOUNT:PROJECT:SDG:DATE/TIME:PAGE: Tetra Tech Inc. - UT L1540992 10/17/22 15:23 28 of 64 QUALITY CONTROL SUMMARYWG1941473 Metals (ICP) by Method 6010B L1540992-03 L1541428-04 Original Sample (OS) • Matrix Spike (MS) • Matrix Spike Duplicate (MSD) (OS) L1541428-04 10/14/22 20:28 • (MS) R3848739-4 10/14/22 20:33 • (MSD) R3848739-5 10/14/22 20:36 Spike Amount Original Result MS Result MSD Result MS Rec. MSD Rec. Dilution Rec. Limits MS Qualifier MSD Qualifier RPD RPD Limits Analyte mg/l mg/l mg/l mg/l %%%%% Cadmium 1.00 ND 0.980 0.968 98.0 96.8 1 75.0-125 1.27 20 Chromium 1.00 ND 0.987 0.975 98.7 97.5 1 75.0-125 1.28 20 Copper 1.00 ND 0.994 0.983 98.9 97.8 1 75.0-125 1.09 20 Lead 1.00 ND 0.980 0.966 98.0 96.6 1 75.0-125 1.46 20 Nickel 1.00 ND 0.968 0.958 96.8 95.8 1 75.0-125 1.02 20 Selenium 1.00 ND 0.988 0.970 98.8 97.0 1 75.0-125 1.85 20 Silver 0.200 ND 0.188 0.187 94.2 93.5 1 75.0-125 0.719 20 Thallium 1.00 ND 0.980 0.962 98.0 96.2 1 75.0-125 1.77 20 Zinc 1.00 ND 0.963 0.956 96.3 95.6 1 75.0-125 0.755 20 1 Cp 2 Tc 3 Ss 4 Cn 5 Sr 6 Qc 7 Gl 8 Al 9 Sc ACCOUNT:PROJECT:SDG:DATE/TIME:PAGE: Tetra Tech Inc. - UT L1540992 10/17/22 15:01 29 of 64 ACCOUNT:PROJECT:SDG:DATE/TIME:PAGE: Tetra Tech Inc. - UT L1540992 10/17/22 15:23 29 of 64 QUALITY CONTROL SUMMARYWG1936401 Volatile Organic Compounds (GC) by Method 8015D/GRO L1540992-04 Method Blank (MB) (MB) R3844837-2 10/03/22 12:56 MB Result MB Qualifier MB MDL MB RDL Analyte mg/l mg/l mg/l TPH (GC/FID) Low Fraction 0.0339 J 0.0314 0.100 (S) a,a,a-Trifluorotoluene(FID)101 78.0-120 Laboratory Control Sample (LCS) (LCS) R3844837-1 10/03/22 12:12 Spike Amount LCS Result LCS Rec. Rec. Limits LCS Qualifier Analyte mg/l mg/l %% TPH (GC/FID) Low Fraction 5.50 5.95 108 72.0-127 (S) a,a,a-Trifluorotoluene(FID) 93.3 78.0-120 1 Cp 2 Tc 3 Ss 4 Cn 5 Sr 6 Qc 7 Gl 8 Al 9 Sc ACCOUNT:PROJECT:SDG:DATE/TIME:PAGE: Tetra Tech Inc. - UT L1540992 10/17/22 15:01 30 of 64 ACCOUNT:PROJECT:SDG:DATE/TIME:PAGE: Tetra Tech Inc. - UT L1540992 10/17/22 15:23 30 of 64 QUALITY CONTROL SUMMARYWG1937632 Volatile Organic Compounds (GC) by Method 8015D/GRO L1540992-03 Method Blank (MB) (MB) R3846381-2 10/06/22 03:48 MB Result MB Qualifier MB MDL MB RDL Analyte mg/l mg/l mg/l TPH (GC/FID) Low Fraction U 0.0314 0.100 (S) a,a,a-Trifluorotoluene(FID)106 78.0-120 Laboratory Control Sample (LCS) (LCS) R3846381-1 10/06/22 02:54 Spike Amount LCS Result LCS Rec. Rec. Limits LCS Qualifier Analyte mg/l mg/l %% TPH (GC/FID) Low Fraction 5.50 5.50 100 72.0-127 (S) a,a,a-Trifluorotoluene(FID) 102 78.0-120 1 Cp 2 Tc 3 Ss 4 Cn 5 Sr 6 Qc 7 Gl 8 Al 9 Sc ACCOUNT:PROJECT:SDG:DATE/TIME:PAGE: Tetra Tech Inc. - UT L1540992 10/17/22 15:01 31 of 64 ACCOUNT:PROJECT:SDG:DATE/TIME:PAGE: Tetra Tech Inc. - UT L1540992 10/17/22 15:23 31 of 64 QUALITY CONTROL SUMMARYWG1939064 Volatile Organic Compounds (GC) by Method 8015D/GRO L1540992-01,02 Method Blank (MB) (MB) R3847041-2 10/07/22 17:30 MB Result MB Qualifier MB MDL MB RDL Analyte mg/kg mg/kg mg/kg TPH (GC/FID) Low Fraction U 0.543 2.50 (S) a,a,a-Trifluorotoluene(FID)94.2 77.0-120 Laboratory Control Sample (LCS) • Laboratory Control Sample Duplicate (LCSD) (LCS) R3847041-1 10/07/22 16:24 • (LCSD) R3847041-3 10/07/22 18:08 Spike Amount LCS Result LCSD Result LCS Rec. LCSD Rec. Rec. Limits LCS Qualifier LCSD Qualifier RPD RPD Limits Analyte mg/kg mg/kg mg/kg %%%%% TPH (GC/FID) Low Fraction 5.50 5.14 5.76 93.5 105 72.0-127 11.4 20 (S) a,a,a-Trifluorotoluene(FID) 107 110 77.0-120 1 Cp 2 Tc 3 Ss 4 Cn 5 Sr 6 Qc 7 Gl 8 Al 9 Sc ACCOUNT:PROJECT:SDG:DATE/TIME:PAGE: Tetra Tech Inc. - UT L1540992 10/17/22 15:01 32 of 64 ACCOUNT:PROJECT:SDG:DATE/TIME:PAGE: Tetra Tech Inc. - UT L1540992 10/17/22 15:23 32 of 64 QUALITY CONTROL SUMMARYWG1937343 Volatile Organic Compounds (GC/MS) by Method 8260B L1540992-03,04 Method Blank (MB) (MB) R3845564-4 10/04/22 23:33 MB Result MB Qualifier MB MDL MB RDL Analyte mg/l mg/l mg/l Acetone U 0.0113 0.0500 Acrolein U 0.00254 0.0500 Acrylonitrile U 0.000671 0.0100 Benzene U 0.0000941 0.00100 Bromobenzene U 0.000118 0.00100 Bromodichloromethane U 0.000136 0.00100 Bromoform U 0.000129 0.00100 Bromomethane U 0.000605 0.00500 n-Butylbenzene U 0.000157 0.00100 sec-Butylbenzene U 0.000125 0.00100 tert-Butylbenzene U 0.000127 0.00100 Carbon tetrachloride U 0.000128 0.00100 Chlorobenzene U 0.000116 0.00100 Chlorodibromomethane U 0.000140 0.00100 Chloroethane U 0.000192 0.00500 Chloroform U 0.000111 0.00500 Chloromethane U 0.000960 0.00250 2-Chlorotoluene U 0.000106 0.00100 4-Chlorotoluene U 0.000114 0.00100 1,2-Dibromo-3-Chloropropane U 0.000276 0.00500 1,2-Dibromoethane U 0.000126 0.00100 Dibromomethane U 0.000122 0.00100 1,2-Dichlorobenzene U 0.000107 0.00100 1,3-Dichlorobenzene U 0.000110 0.00100 1,4-Dichlorobenzene U 0.000120 0.00100 Dichlorodifluoromethane U 0.000374 0.00500 1,1-Dichloroethane U 0.000100 0.00100 1,2-Dichloroethane U 0.0000819 0.00100 1,1-Dichloroethene U 0.000188 0.00100 cis-1,2-Dichloroethene U 0.000126 0.00100 trans-1,2-Dichloroethene U 0.000149 0.00100 1,2-Dichloropropane U 0.000149 0.00100 1,1-Dichloropropene U 0.000142 0.00100 1,3-Dichloropropane U 0.000110 0.00100 cis-1,3-Dichloropropene U 0.000111 0.00100 trans-1,3-Dichloropropene U 0.000118 0.00100 2,2-Dichloropropane U 0.000161 0.00100 Di-isopropyl ether U 0.000105 0.00100 Ethylbenzene U 0.000137 0.00100 Hexachloro-1,3-butadiene 0.000469 J 0.000337 0.00100 1 Cp 2 Tc 3 Ss 4 Cn 5 Sr 6 Qc 7 Gl 8 Al 9 Sc ACCOUNT:PROJECT:SDG:DATE/TIME:PAGE: Tetra Tech Inc. - UT L1540992 10/17/22 15:01 33 of 64 ACCOUNT:PROJECT:SDG:DATE/TIME:PAGE: Tetra Tech Inc. - UT L1540992 10/17/22 15:23 33 of 64 QUALITY CONTROL SUMMARYWG1937343 Volatile Organic Compounds (GC/MS) by Method 8260B L1540992-03,04 Method Blank (MB) (MB) R3845564-4 10/04/22 23:33 MB Result MB Qualifier MB MDL MB RDL Analyte mg/l mg/l mg/l Isopropylbenzene U 0.000105 0.00100 p-Isopropyltoluene U 0.000120 0.00100 2-Butanone (MEK)U 0.00119 0.0100 Methylene Chloride U 0.000430 0.00500 4-Methyl-2-pentanone (MIBK) U 0.000478 0.0100 Methyl tert-butyl ether U 0.000101 0.00100 Naphthalene U 0.00100 0.00500 n-Propylbenzene U 0.0000993 0.00100 Styrene U 0.000118 0.00100 1,1,1,2-Tetrachloroethane U 0.000147 0.00100 1,1,2,2-Tetrachloroethane U 0.000133 0.00100 1,1,2-Trichlorotrifluoroethane U 0.000180 0.00100 Tetrachloroethene U 0.000300 0.00100 Toluene U 0.000278 0.00100 1,2,3-Trichlorobenzene 0.000759 J 0.000230 0.00100 1,2,4-Trichlorobenzene U 0.000481 0.00100 1,1,1-Trichloroethane U 0.000149 0.00100 1,1,2-Trichloroethane U 0.000158 0.00100 Trichloroethene U 0.000190 0.00100 Trichlorofluoromethane U 0.000160 0.00500 1,2,3-Trichloropropane U 0.000237 0.00250 1,2,4-Trimethylbenzene U 0.000322 0.00100 1,2,3-Trimethylbenzene U 0.000104 0.00100 1,3,5-Trimethylbenzene U 0.000104 0.00100 Vinyl chloride U 0.000234 0.00100 Xylenes, Total U 0.000174 0.00300 (S) Toluene-d8 112 80.0-120 (S) 4-Bromofluorobenzene 95.8 77.0-126 (S) 1,2-Dichloroethane-d4 110 70.0-130 Laboratory Control Sample (LCS) • Laboratory Control Sample Duplicate (LCSD) (LCS) R3845564-1 10/04/22 21:50 • (LCSD) R3845564-3 10/04/22 23:12 Spike Amount LCS Result LCSD Result LCS Rec. LCSD Rec. Rec. Limits LCS Qualifier LCSD Qualifier RPD RPD Limits Analyte mg/l mg/l mg/l %%%%% Acetone 0.0250 0.0348 0.0347 139 139 19.0-160 0.288 27 Acrolein 0.0250 0.0397 0.0386 159 154 10.0-160 2.81 26 Acrylonitrile 0.0250 0.0330 0.0332 132 133 55.0-149 0.604 20 Benzene 0.00500 0.00517 0.00503 103 101 70.0-123 2.75 20 1 Cp 2 Tc 3 Ss 4 Cn 5 Sr 6 Qc 7 Gl 8 Al 9 Sc ACCOUNT:PROJECT:SDG:DATE/TIME:PAGE: Tetra Tech Inc. - UT L1540992 10/17/22 15:01 34 of 64 ACCOUNT:PROJECT:SDG:DATE/TIME:PAGE: Tetra Tech Inc. - UT L1540992 10/17/22 15:23 34 of 64 QUALITY CONTROL SUMMARYWG1937343 Volatile Organic Compounds (GC/MS) by Method 8260B L1540992-03,04 Laboratory Control Sample (LCS) • Laboratory Control Sample Duplicate (LCSD) (LCS) R3845564-1 10/04/22 21:50 • (LCSD) R3845564-3 10/04/22 23:12 Spike Amount LCS Result LCSD Result LCS Rec. LCSD Rec. Rec. Limits LCS Qualifier LCSD Qualifier RPD RPD Limits Analyte mg/l mg/l mg/l %%%%% Bromobenzene 0.00500 0.00558 0.00601 112 120 73.0-121 7.42 20 Bromodichloromethane 0.00500 0.00478 0.00492 95.6 98.4 75.0-120 2.89 20 Bromoform 0.00500 0.00458 0.00483 91.6 96.6 68.0-132 5.31 20 Bromomethane 0.00500 U 0.000804 9.33 16.1 10.0-160 J4 J3 200 25 n-Butylbenzene 0.00500 0.00440 0.00457 88.0 91.4 73.0-125 3.79 20 sec-Butylbenzene 0.00500 0.00527 0.00516 105 103 75.0-125 2.11 20 tert-Butylbenzene 0.00500 0.00479 0.00491 95.8 98.2 76.0-124 2.47 20 Carbon tetrachloride 0.00500 0.00491 0.00478 98.2 95.6 68.0-126 2.68 20 Chlorobenzene 0.00500 0.00490 0.00521 98.0 104 80.0-121 6.13 20 Chlorodibromomethane 0.00500 0.00463 0.00511 92.6 102 77.0-125 9.86 20 Chloroethane 0.00500 0.00396 0.00398 79.2 79.6 47.0-150 0.504 20 Chloroform 0.00500 0.00492 0.00504 98.4 101 73.0-120 2.41 20 Chloromethane 0.00500 0.00503 0.00497 101 99.4 41.0-142 1.20 20 2-Chlorotoluene 0.00500 0.00525 0.00538 105 108 76.0-123 2.45 20 4-Chlorotoluene 0.00500 0.00516 0.00523 103 105 75.0-122 1.35 20 1,2-Dibromo-3-Chloropropane 0.00500 0.00437 0.00377 87.4 75.4 58.0-134 14.7 20 1,2-Dibromoethane 0.00500 0.00490 0.00554 98.0 111 80.0-122 12.3 20 Dibromomethane 0.00500 0.00474 0.00487 94.8 97.4 80.0-120 2.71 20 1,2-Dichlorobenzene 0.00500 0.00531 0.00553 106 111 79.0-121 4.06 20 1,3-Dichlorobenzene 0.00500 0.00504 0.00543 101 109 79.0-120 7.45 20 1,4-Dichlorobenzene 0.00500 0.00527 0.00562 105 112 79.0-120 6.43 20 Dichlorodifluoromethane 0.00500 0.00453 0.00449 90.6 89.8 51.0-149 0.887 20 1,1-Dichloroethane 0.00500 0.00528 0.00529 106 106 70.0-126 0.189 20 1,2-Dichloroethane 0.00500 0.00474 0.00486 94.8 97.2 70.0-128 2.50 20 1,1-Dichloroethene 0.00500 0.00476 0.00533 95.2 107 71.0-124 11.3 20 cis-1,2-Dichloroethene 0.00500 0.00461 0.00496 92.2 99.2 73.0-120 7.31 20 trans-1,2-Dichloroethene 0.00500 0.00482 0.00483 96.4 96.6 73.0-120 0.207 20 1,2-Dichloropropane 0.00500 0.00521 0.00530 104 106 77.0-125 1.71 20 1,1-Dichloropropene 0.00500 0.00493 0.00503 98.6 101 74.0-126 2.01 20 1,3-Dichloropropane 0.00500 0.00523 0.00591 105 118 80.0-120 12.2 20 cis-1,3-Dichloropropene 0.00500 0.00463 0.00475 92.6 95.0 80.0-123 2.56 20 trans-1,3-Dichloropropene 0.00500 0.00482 0.00530 96.4 106 78.0-124 9.49 20 2,2-Dichloropropane 0.00500 0.00468 0.00495 93.6 99.0 58.0-130 5.61 20 Di-isopropyl ether 0.00500 0.00681 0.00683 136 137 58.0-138 0.293 20 Ethylbenzene 0.00500 0.00465 0.00490 93.0 98.0 79.0-123 5.24 20 Hexachloro-1,3-butadiene 0.00500 0.00587 0.00526 117 105 54.0-138 11.0 20 Isopropylbenzene 0.00500 0.00442 0.00472 88.4 94.4 76.0-127 6.56 20 p-Isopropyltoluene 0.00500 0.00484 0.00505 96.8 101 76.0-125 4.25 20 2-Butanone (MEK)0.0250 0.0344 0.0337 138 135 44.0-160 2.06 20 Methylene Chloride 0.00500 0.00516 0.00512 103 102 67.0-120 0.778 20 1 Cp 2 Tc 3 Ss 4 Cn 5 Sr 6 Qc 7 Gl 8 Al 9 Sc ACCOUNT:PROJECT:SDG:DATE/TIME:PAGE: Tetra Tech Inc. - UT L1540992 10/17/22 15:01 35 of 64 ACCOUNT:PROJECT:SDG:DATE/TIME:PAGE: Tetra Tech Inc. - UT L1540992 10/17/22 15:23 35 of 64 QUALITY CONTROL SUMMARYWG1937343 Volatile Organic Compounds (GC/MS) by Method 8260B L1540992-03,04 Laboratory Control Sample (LCS) • Laboratory Control Sample Duplicate (LCSD) (LCS) R3845564-1 10/04/22 21:50 • (LCSD) R3845564-3 10/04/22 23:12 Spike Amount LCS Result LCSD Result LCS Rec. LCSD Rec. Rec. Limits LCS Qualifier LCSD Qualifier RPD RPD Limits Analyte mg/l mg/l mg/l %%%%% 4-Methyl-2-pentanone (MIBK) 0.0250 0.0340 0.0353 136 141 68.0-142 3.75 20 Methyl tert-butyl ether 0.00500 0.00502 0.00518 100 104 68.0-125 3.14 20 Naphthalene 0.00500 0.00200 0.00242 40.0 48.4 54.0-135 J4 J4 19.0 20 n-Propylbenzene 0.00500 0.00516 0.00521 103 104 77.0-124 0.964 20 Styrene 0.00500 0.00421 0.00463 84.2 92.6 73.0-130 9.50 20 1,1,1,2-Tetrachloroethane 0.00500 0.00476 0.00516 95.2 103 75.0-125 8.06 20 1,1,2,2-Tetrachloroethane 0.00500 0.00606 0.00615 121 123 65.0-130 1.47 20 1,1,2-Trichlorotrifluoroethane 0.00500 0.00557 0.00560 111 112 69.0-132 0.537 20 Tetrachloroethene 0.00500 0.00497 0.00526 99.4 105 72.0-132 5.67 20 Toluene 0.00500 0.00501 0.00514 100 103 79.0-120 2.56 20 1,2,3-Trichlorobenzene 0.00500 0.00380 0.00427 76.0 85.4 50.0-138 11.6 20 1,2,4-Trichlorobenzene 0.00500 0.00405 0.00423 81.0 84.6 57.0-137 4.35 20 1,1,1-Trichloroethane 0.00500 0.00479 0.00494 95.8 98.8 73.0-124 3.08 20 1,1,2-Trichloroethane 0.00500 0.00518 0.00551 104 110 80.0-120 6.17 20 Trichloroethene 0.00500 0.00472 0.00478 94.4 95.6 78.0-124 1.26 20 Trichlorofluoromethane 0.00500 0.00493 0.00495 98.6 99.0 59.0-147 0.405 20 1,2,3-Trichloropropane 0.00500 0.00617 0.00628 123 126 73.0-130 1.77 20 1,2,4-Trimethylbenzene 0.00500 0.00487 0.00506 97.4 101 76.0-121 3.83 20 1,2,3-Trimethylbenzene 0.00500 0.00515 0.00512 103 102 77.0-120 0.584 20 1,3,5-Trimethylbenzene 0.00500 0.00504 0.00515 101 103 76.0-122 2.16 20 Vinyl chloride 0.00500 0.00470 0.00492 94.0 98.4 67.0-131 4.57 20 Xylenes, Total 0.0150 0.0138 0.0144 92.0 96.0 79.0-123 4.26 20 (S) Toluene-d8 109 111 80.0-120 (S) 4-Bromofluorobenzene 102 102 77.0-126 (S) 1,2-Dichloroethane-d4 109 109 70.0-130 L1540865-04 Original Sample (OS) • Matrix Spike (MS) • Matrix Spike Duplicate (MSD) (OS) L1540865-04 10/05/22 05:41 • (MS) R3845564-5 10/05/22 09:09 • (MSD) R3845564-6 10/05/22 09:29 Spike Amount Original Result MS Result MSD Result MS Rec. MSD Rec. Dilution Rec. Limits MS Qualifier MSD Qualifier RPD RPD Limits Analyte mg/l mg/l mg/l mg/l %%%%% Acetone 0.0250 ND ND ND 135 132 1 10.0-160 2.70 35 Acrolein 0.0250 ND ND ND 145 140 1 10.0-160 3.37 39 Acrylonitrile 0.0250 ND 0.0353 0.0338 141 135 1 21.0-160 4.34 32 Benzene 0.00500 ND 0.00555 0.00564 111 113 1 17.0-158 1.61 27 Bromobenzene 0.00500 ND 0.00630 0.00653 126 131 1 30.0-149 3.59 28 Bromodichloromethane 0.00500 ND 0.00532 0.00529 106 106 1 31.0-150 0.566 27 Bromoform 0.00500 ND 0.00526 0.00550 105 110 1 29.0-150 4.46 29 Bromomethane 0.00500 ND ND ND 12.3 15.4 1 10.0-160 22.4 38 1 Cp 2 Tc 3 Ss 4 Cn 5 Sr 6 Qc 7 Gl 8 Al 9 Sc ACCOUNT:PROJECT:SDG:DATE/TIME:PAGE: Tetra Tech Inc. - UT L1540992 10/17/22 15:01 36 of 64 ACCOUNT:PROJECT:SDG:DATE/TIME:PAGE: Tetra Tech Inc. - UT L1540992 10/17/22 15:23 36 of 64 QUALITY CONTROL SUMMARYWG1937343 Volatile Organic Compounds (GC/MS) by Method 8260B L1540992-03,04 L1540865-04 Original Sample (OS) • Matrix Spike (MS) • Matrix Spike Duplicate (MSD) (OS) L1540865-04 10/05/22 05:41 • (MS) R3845564-5 10/05/22 09:09 • (MSD) R3845564-6 10/05/22 09:29 Spike Amount Original Result MS Result MSD Result MS Rec. MSD Rec. Dilution Rec. Limits MS Qualifier MSD Qualifier RPD RPD Limits Analyte mg/l mg/l mg/l mg/l %%%%% n-Butylbenzene 0.00500 ND 0.00539 0.00536 108 107 1 31.0-150 0.558 30 sec-Butylbenzene 0.00500 ND 0.00595 0.00611 119 122 1 33.0-155 2.65 29 tert-Butylbenzene 0.00500 ND 0.00561 0.00558 112 112 1 34.0-153 0.536 28 Carbon tetrachloride 0.00500 ND 0.00556 0.00578 111 116 1 23.0-159 3.88 28 Chlorobenzene 0.00500 ND 0.00556 0.00567 111 113 1 33.0-152 1.96 27 Chlorodibromomethane 0.00500 ND 0.00533 0.00566 107 113 1 37.0-149 6.01 27 Chloroethane 0.00500 ND ND ND 87.8 88.4 1 10.0-160 0.681 30 Chloroform 0.00500 ND 0.00558 0.00548 112 110 1 29.0-154 1.81 28 Chloromethane 0.00500 ND 0.00515 0.00524 103 105 1 10.0-160 1.73 29 2-Chlorotoluene 0.00500 ND 0.00592 0.00603 118 121 1 32.0-153 1.84 28 4-Chlorotoluene 0.00500 ND 0.00569 0.00581 114 116 1 32.0-150 2.09 28 1,2-Dibromo-3-Chloropropane 0.00500 ND 0.00517 ND 103 99.0 1 22.0-151 4.35 34 1,2-Dibromoethane 0.00500 ND 0.00565 0.00575 113 115 1 34.0-147 1.75 27 Dibromomethane 0.00500 ND 0.00536 0.00540 107 108 1 30.0-151 0.744 27 1,2-Dichlorobenzene 0.00500 ND 0.00627 0.00610 125 122 1 34.0-149 2.75 28 1,3-Dichlorobenzene 0.00500 ND 0.00591 0.00605 118 121 1 36.0-146 2.34 27 1,4-Dichlorobenzene 0.00500 ND 0.00623 0.00624 125 125 1 35.0-142 0.160 27 Dichlorodifluoromethane 0.00500 ND 0.00517 ND 103 97.6 1 10.0-160 5.77 29 1,1-Dichloroethane 0.00500 ND 0.00594 0.00594 119 119 1 25.0-158 0.000 27 1,2-Dichloroethane 0.00500 ND 0.00522 0.00533 104 107 1 29.0-151 2.09 27 1,1-Dichloroethene 0.00500 ND 0.00560 0.00560 112 112 1 11.0-160 0.000 29 cis-1,2-Dichloroethene 0.00500 ND 0.00558 0.00551 112 110 1 10.0-160 1.26 27 trans-1,2-Dichloroethene 0.00500 ND 0.00529 0.00507 106 101 1 17.0-153 4.25 27 1,2-Dichloropropane 0.00500 ND 0.00592 0.00561 118 112 1 30.0-156 5.38 27 1,1-Dichloropropene 0.00500 ND 0.00561 0.00552 112 110 1 25.0-158 1.62 27 1,3-Dichloropropane 0.00500 ND 0.00619 0.00616 124 123 1 38.0-147 0.486 27 cis-1,3-Dichloropropene 0.00500 ND 0.00503 0.00485 101 97.0 1 34.0-149 3.64 28 trans-1,3-Dichloropropene 0.00500 ND 0.00564 0.00542 113 108 1 32.0-149 3.98 28 2,2-Dichloropropane 0.00500 ND 0.00556 0.00565 111 113 1 24.0-152 1.61 29 Di-isopropyl ether 0.00500 ND 0.00736 0.00722 147 144 1 21.0-160 1.92 28 Ethylbenzene 0.00500 ND 0.00547 0.00544 109 109 1 30.0-155 0.550 27 Hexachloro-1,3-butadiene 0.00500 ND 0.00643 0.00681 129 136 1 20.0-154 5.74 34 Isopropylbenzene 0.00500 ND 0.00528 0.00533 106 107 1 28.0-157 0.943 27 p-Isopropyltoluene 0.00500 ND 0.00565 0.00574 113 115 1 30.0-154 1.58 29 2-Butanone (MEK)0.0250 ND 0.0362 0.0344 145 138 1 10.0-160 5.10 32 Methylene Chloride 0.00500 ND 0.00541 0.00554 108 111 1 23.0-144 2.37 28 4-Methyl-2-pentanone (MIBK) 0.0250 ND 0.0389 0.0374 156 150 1 29.0-160 3.93 29 Methyl tert-butyl ether 0.00500 ND 0.00563 0.00550 113 110 1 28.0-150 2.34 29 Naphthalene 0.00500 ND ND ND 52.8 75.0 1 12.0-156 34.7 35 n-Propylbenzene 0.00500 ND 0.00582 0.00596 116 119 1 31.0-154 2.38 28 1 Cp 2 Tc 3 Ss 4 Cn 5 Sr 6 Qc 7 Gl 8 Al 9 Sc ACCOUNT:PROJECT:SDG:DATE/TIME:PAGE: Tetra Tech Inc. - UT L1540992 10/17/22 15:01 37 of 64 ACCOUNT:PROJECT:SDG:DATE/TIME:PAGE: Tetra Tech Inc. - UT L1540992 10/17/22 15:23 37 of 64 QUALITY CONTROL SUMMARYWG1937343 Volatile Organic Compounds (GC/MS) by Method 8260B L1540992-03,04 L1540865-04 Original Sample (OS) • Matrix Spike (MS) • Matrix Spike Duplicate (MSD) (OS) L1540865-04 10/05/22 05:41 • (MS) R3845564-5 10/05/22 09:09 • (MSD) R3845564-6 10/05/22 09:29 Spike Amount Original Result MS Result MSD Result MS Rec. MSD Rec. Dilution Rec. Limits MS Qualifier MSD Qualifier RPD RPD Limits Analyte mg/l mg/l mg/l mg/l %%%%% Styrene 0.00500 ND 0.00485 0.00505 97.0 101 1 33.0-155 4.04 28 1,1,1,2-Tetrachloroethane 0.00500 ND 0.00540 0.00568 108 114 1 36.0-151 5.05 29 1,1,2,2-Tetrachloroethane 0.00500 ND 0.00707 0.00710 141 142 1 33.0-150 0.423 28 1,1,2-Trichlorotrifluoroethane 0.00500 ND 0.00632 0.00608 126 122 1 23.0-160 3.87 30 Tetrachloroethene 0.00500 ND 0.00552 0.00564 110 113 1 10.0-160 2.15 27 Toluene 0.00500 ND 0.00565 0.00562 113 112 1 26.0-154 0.532 28 1,2,3-Trichlorobenzene 0.00500 ND 0.00437 0.00534 87.4 107 1 17.0-150 20.0 36 1,2,4-Trichlorobenzene 0.00500 ND 0.00412 0.00451 82.4 90.2 1 24.0-150 9.04 33 1,1,1-Trichloroethane 0.00500 ND 0.00575 0.00579 115 116 1 23.0-160 0.693 28 1,1,2-Trichloroethane 0.00500 ND 0.00603 0.00581 121 116 1 35.0-147 3.72 27 Trichloroethene 0.00500 ND 0.00507 0.00510 101 102 1 10.0-160 0.590 25 Trichlorofluoromethane 0.00500 ND 0.00568 0.00573 114 115 1 17.0-160 0.876 31 1,2,3-Trichloropropane 0.00500 ND 0.00643 0.00667 129 133 1 34.0-151 3.66 29 1,2,4-Trimethylbenzene 0.00500 ND 0.00568 0.00569 114 114 1 26.0-154 0.176 27 1,2,3-Trimethylbenzene 0.00500 ND 0.00572 0.00593 114 119 1 32.0-149 3.61 28 1,3,5-Trimethylbenzene 0.00500 ND 0.00567 0.00573 113 115 1 28.0-153 1.05 27 Vinyl chloride 0.00500 ND 0.00532 0.00526 106 105 1 10.0-160 1.13 27 Xylenes, Total 0.0150 ND 0.0156 0.0156 104 104 1 29.0-154 0.000 28 (S) Toluene-d8 106 108 80.0-120 (S) 4-Bromofluorobenzene 101 101 77.0-126 (S) 1,2-Dichloroethane-d4 109 110 70.0-130 L1540970-01 Original Sample (OS) • Matrix Spike (MS) • Matrix Spike Duplicate (MSD) (OS) L1540970-01 10/05/22 08:06 • (MS) R3845564-7 10/05/22 09:50 • (MSD) R3845564-8 10/05/22 10:11 Spike Amount Original Result MS Result MSD Result MS Rec. MSD Rec. Dilution Rec. Limits MS Qualifier MSD Qualifier RPD RPD Limits Analyte mg/l mg/l mg/l mg/l %%%%% Acetone 0.0250 ND ND ND 168 166 1 10.0-160 J5 J5 1.44 35 Acrolein 0.0250 ND ND ND 159 151 1 10.0-160 5.42 39 Acrylonitrile 0.0250 ND 0.0362 0.0362 145 145 1 21.0-160 0.000 32 Benzene 0.00500 ND 0.00635 0.00603 121 115 1 17.0-158 5.17 27 Bromobenzene 0.00500 ND 0.00658 0.00675 132 135 1 30.0-149 2.55 28 Bromodichloromethane 0.00500 ND 0.00570 0.00538 114 108 1 31.0-150 5.78 27 Bromoform 0.00500 ND 0.00588 0.00561 118 112 1 29.0-150 4.70 29 Bromomethane 0.00500 ND ND ND 19.9 18.2 1 10.0-160 9.34 38 n-Butylbenzene 0.00500 ND 0.00552 0.00523 110 105 1 31.0-150 5.40 30 sec-Butylbenzene 0.00500 ND 0.00644 0.00610 129 122 1 33.0-155 5.42 29 tert-Butylbenzene 0.00500 ND 0.00585 0.00596 117 119 1 34.0-153 1.86 28 Carbon tetrachloride 0.00500 ND 0.00616 0.00587 123 117 1 23.0-159 4.82 28 1 Cp 2 Tc 3 Ss 4 Cn 5 Sr 6 Qc 7 Gl 8 Al 9 Sc ACCOUNT:PROJECT:SDG:DATE/TIME:PAGE: Tetra Tech Inc. - UT L1540992 10/17/22 15:01 38 of 64 ACCOUNT:PROJECT:SDG:DATE/TIME:PAGE: Tetra Tech Inc. - UT L1540992 10/17/22 15:23 38 of 64 QUALITY CONTROL SUMMARYWG1937343 Volatile Organic Compounds (GC/MS) by Method 8260B L1540992-03,04 L1540970-01 Original Sample (OS) • Matrix Spike (MS) • Matrix Spike Duplicate (MSD) (OS) L1540970-01 10/05/22 08:06 • (MS) R3845564-7 10/05/22 09:50 • (MSD) R3845564-8 10/05/22 10:11 Spike Amount Original Result MS Result MSD Result MS Rec. MSD Rec. Dilution Rec. Limits MS Qualifier MSD Qualifier RPD RPD Limits Analyte mg/l mg/l mg/l mg/l %%%%% Chlorobenzene 0.00500 ND 0.00635 0.00615 127 123 1 33.0-152 3.20 27 Chlorodibromomethane 0.00500 ND 0.00578 0.00546 116 109 1 37.0-149 5.69 27 Chloroethane 0.00500 ND ND ND 90.0 94.2 1 10.0-160 4.56 30 Chloroform 0.00500 ND 0.00605 0.00568 121 114 1 29.0-154 6.31 28 Chloromethane 0.00500 ND 0.00555 0.00539 111 108 1 10.0-160 2.93 29 2-Chlorotoluene 0.00500 ND 0.00626 0.00643 125 129 1 32.0-153 2.68 28 4-Chlorotoluene 0.00500 ND 0.00597 0.00620 119 124 1 32.0-150 3.78 28 1,2-Dibromo-3-Chloropropane 0.00500 ND ND 0.00551 98.8 110 1 22.0-151 10.9 34 1,2-Dibromoethane 0.00500 ND 0.00629 0.00585 126 117 1 34.0-147 7.25 27 Dibromomethane 0.00500 ND 0.00546 0.00537 109 107 1 30.0-151 1.66 27 1,2-Dichlorobenzene 0.00500 ND 0.00661 0.00688 132 138 1 34.0-149 4.00 28 1,3-Dichlorobenzene 0.00500 ND 0.00636 0.00620 127 124 1 36.0-146 2.55 27 1,4-Dichlorobenzene 0.00500 ND 0.00685 0.00665 137 133 1 35.0-142 2.96 27 Dichlorodifluoromethane 0.00500 ND 0.00566 0.00514 113 103 1 10.0-160 9.63 29 1,1-Dichloroethane 0.00500 ND 0.00690 0.00667 123 119 1 25.0-158 3.39 27 1,2-Dichloroethane 0.00500 ND 0.00552 0.00538 110 108 1 29.0-151 2.57 27 1,1-Dichloroethene 0.00500 ND 0.00590 0.00572 118 114 1 11.0-160 3.10 29 cis-1,2-Dichloroethene 0.00500 0.00393 0.0103 0.00948 127 111 1 10.0-160 8.29 27 trans-1,2-Dichloroethene 0.00500 ND 0.00561 0.00548 112 110 1 17.0-153 2.34 27 1,2-Dichloropropane 0.00500 ND 0.00611 0.00626 122 125 1 30.0-156 2.43 27 1,1-Dichloropropene 0.00500 ND 0.00631 0.00570 126 114 1 25.0-158 10.2 27 1,3-Dichloropropane 0.00500 ND 0.00656 0.00623 131 125 1 38.0-147 5.16 27 cis-1,3-Dichloropropene 0.00500 ND 0.00523 0.00495 105 99.0 1 34.0-149 5.50 28 trans-1,3-Dichloropropene 0.00500 ND 0.00596 0.00556 119 111 1 32.0-149 6.94 28 2,2-Dichloropropane 0.00500 ND 0.00542 0.00517 108 103 1 24.0-152 4.72 29 Di-isopropyl ether 0.00500 ND 0.00791 0.00777 158 155 1 21.0-160 1.79 28 Ethylbenzene 0.00500 ND 0.00580 0.00554 116 111 1 30.0-155 4.59 27 Hexachloro-1,3-butadiene 0.00500 ND 0.00734 0.00763 147 153 1 20.0-154 3.87 34 Isopropylbenzene 0.00500 ND 0.00581 0.00546 116 109 1 28.0-157 6.21 27 p-Isopropyltoluene 0.00500 ND 0.00624 0.00598 125 120 1 30.0-154 4.26 29 2-Butanone (MEK)0.0250 ND 0.0361 0.0370 144 148 1 10.0-160 2.46 32 Methylene Chloride 0.00500 ND 0.00879 0.00841 121 114 1 23.0-144 4.42 28 4-Methyl-2-pentanone (MIBK) 0.0250 ND 0.0401 0.0396 160 158 1 29.0-160 1.25 29 Methyl tert-butyl ether 0.00500 0.00117 0.00728 0.00700 122 117 1 28.0-150 3.92 29 Naphthalene 0.00500 ND ND ND 86.2 97.0 1 12.0-156 11.8 35 n-Propylbenzene 0.00500 ND 0.00617 0.00617 123 123 1 31.0-154 0.000 28 Styrene 0.00500 ND 0.00543 0.00523 109 105 1 33.0-155 3.75 28 1,1,1,2-Tetrachloroethane 0.00500 ND 0.00591 0.00573 118 115 1 36.0-151 3.09 29 1,1,2,2-Tetrachloroethane 0.00500 ND 0.00753 0.00748 151 150 1 33.0-150 J5 0.666 28 1,1,2-Trichlorotrifluoroethane 0.00500 ND 0.00691 0.00628 138 126 1 23.0-160 9.55 30 1 Cp 2 Tc 3 Ss 4 Cn 5 Sr 6 Qc 7 Gl 8 Al 9 Sc ACCOUNT:PROJECT:SDG:DATE/TIME:PAGE: Tetra Tech Inc. - UT L1540992 10/17/22 15:01 39 of 64 ACCOUNT:PROJECT:SDG:DATE/TIME:PAGE: Tetra Tech Inc. - UT L1540992 10/17/22 15:23 39 of 64 QUALITY CONTROL SUMMARYWG1937343 Volatile Organic Compounds (GC/MS) by Method 8260B L1540992-03,04 L1540970-01 Original Sample (OS) • Matrix Spike (MS) • Matrix Spike Duplicate (MSD) (OS) L1540970-01 10/05/22 08:06 • (MS) R3845564-7 10/05/22 09:50 • (MSD) R3845564-8 10/05/22 10:11 Spike Amount Original Result MS Result MSD Result MS Rec. MSD Rec. Dilution Rec. Limits MS Qualifier MSD Qualifier RPD RPD Limits Analyte mg/l mg/l mg/l mg/l %%%%% Tetrachloroethene 0.00500 ND 0.00687 0.00648 124 117 1 10.0-160 5.84 27 Toluene 0.00500 ND 0.00610 0.00572 122 114 1 26.0-154 6.43 28 1,2,3-Trichlorobenzene 0.00500 ND 0.00494 0.00578 98.8 116 1 17.0-150 15.7 36 1,2,4-Trichlorobenzene 0.00500 ND 0.00507 0.00440 101 88.0 1 24.0-150 14.1 33 1,1,1-Trichloroethane 0.00500 ND 0.00611 0.00589 122 118 1 23.0-160 3.67 28 1,1,2-Trichloroethane 0.00500 ND 0.00668 0.00602 134 120 1 35.0-147 10.4 27 Trichloroethene 0.00500 ND 0.00546 0.00547 105 105 1 10.0-160 0.183 25 Trichlorofluoromethane 0.00500 ND 0.00602 0.00574 120 115 1 17.0-160 4.76 31 1,2,3-Trichloropropane 0.00500 ND 0.00710 0.00673 142 135 1 34.0-151 5.35 29 1,2,4-Trimethylbenzene 0.00500 ND 0.00603 0.00591 121 118 1 26.0-154 2.01 27 1,2,3-Trimethylbenzene 0.00500 ND 0.00602 0.00603 120 121 1 32.0-149 0.166 28 1,3,5-Trimethylbenzene 0.00500 ND 0.00608 0.00591 122 118 1 28.0-153 2.84 27 Vinyl chloride 0.00500 ND 0.00567 0.00534 113 107 1 10.0-160 5.99 27 Xylenes, Total 0.0150 ND 0.0168 0.0166 112 111 1 29.0-154 1.20 28 (S) Toluene-d8 108 109 80.0-120 (S) 4-Bromofluorobenzene 101 100 77.0-126 (S) 1,2-Dichloroethane-d4 109 109 70.0-130 1 Cp 2 Tc 3 Ss 4 Cn 5 Sr 6 Qc 7 Gl 8 Al 9 Sc ACCOUNT:PROJECT:SDG:DATE/TIME:PAGE: Tetra Tech Inc. - UT L1540992 10/17/22 15:01 40 of 64 ACCOUNT:PROJECT:SDG:DATE/TIME:PAGE: Tetra Tech Inc. - UT L1540992 10/17/22 15:23 40 of 64 QUALITY CONTROL SUMMARYWG1938594 Volatile Organic Compounds (GC/MS) by Method 8260B L1540992-01,02 Method Blank (MB) (MB) R3845773-3 10/06/22 21:02 MB Result MB Qualifier MB MDL MB RDL Analyte mg/kg mg/kg mg/kg Acetone U 0.0365 0.0500 Acrylonitrile U 0.00361 0.0125 Benzene U 0.000467 0.00100 Bromobenzene U 0.000900 0.0125 Bromodichloromethane U 0.000725 0.00250 Bromoform U 0.00117 0.0250 Bromomethane U 0.00197 0.0125 n-Butylbenzene U 0.00525 0.0125 sec-Butylbenzene U 0.00288 0.0125 tert-Butylbenzene U 0.00195 0.00500 Carbon tetrachloride U 0.000898 0.00500 Chlorobenzene U 0.000210 0.00250 Chlorodibromomethane U 0.000612 0.00250 Chloroethane U 0.00170 0.00500 Chloroform U 0.00103 0.00250 Chloromethane U 0.00435 0.0125 2-Chlorotoluene U 0.000865 0.00250 4-Chlorotoluene U 0.000450 0.00500 1,2-Dibromo-3-Chloropropane U 0.00390 0.0250 1,2-Dibromoethane U 0.000648 0.00250 Dibromomethane U 0.000750 0.00500 1,2-Dichlorobenzene U 0.000425 0.00500 1,3-Dichlorobenzene U 0.000600 0.00500 1,4-Dichlorobenzene U 0.000700 0.00500 Dichlorodifluoromethane U 0.00161 0.00250 1,1-Dichloroethane U 0.000491 0.00250 1,2-Dichloroethane U 0.000649 0.00250 1,1-Dichloroethene U 0.000606 0.00250 cis-1,2-Dichloroethene U 0.000734 0.00250 trans-1,2-Dichloroethene U 0.00104 0.00500 1,2-Dichloropropane U 0.00142 0.00500 1,1-Dichloropropene U 0.000809 0.00250 1,3-Dichloropropane U 0.000501 0.00500 cis-1,3-Dichloropropene U 0.000757 0.00250 trans-1,3-Dichloropropene U 0.00114 0.00500 2,2-Dichloropropane U 0.00138 0.00250 Di-isopropyl ether U 0.000410 0.00100 Ethylbenzene U 0.000737 0.00250 Hexachloro-1,3-butadiene U 0.00600 0.0250 Isopropylbenzene U 0.000425 0.00250 1 Cp 2 Tc 3 Ss 4 Cn 5 Sr 6 Qc 7 Gl 8 Al 9 Sc ACCOUNT:PROJECT:SDG:DATE/TIME:PAGE: Tetra Tech Inc. - UT L1540992 10/17/22 15:01 41 of 64 ACCOUNT:PROJECT:SDG:DATE/TIME:PAGE: Tetra Tech Inc. - UT L1540992 10/17/22 15:23 41 of 64 QUALITY CONTROL SUMMARYWG1938594 Volatile Organic Compounds (GC/MS) by Method 8260B L1540992-01,02 Method Blank (MB) (MB) R3845773-3 10/06/22 21:02 MB Result MB Qualifier MB MDL MB RDL Analyte mg/kg mg/kg mg/kg p-Isopropyltoluene U 0.00255 0.00500 2-Butanone (MEK)U 0.0635 0.100 Methylene Chloride U 0.00664 0.0250 4-Methyl-2-pentanone (MIBK) U 0.00228 0.0250 Methyl tert-butyl ether U 0.000350 0.00100 Naphthalene U 0.00488 0.0125 n-Propylbenzene U 0.000950 0.00500 Styrene 0.00205 J 0.000229 0.0125 1,1,1,2-Tetrachloroethane U 0.000948 0.00250 1,1,2,2-Tetrachloroethane U 0.000695 0.00250 1,1,2-Trichlorotrifluoroethane U 0.000754 0.00250 Tetrachloroethene U 0.000896 0.00250 Toluene U 0.00130 0.00500 1,2,3-Trichlorobenzene U 0.00733 0.0125 1,2,4-Trichlorobenzene U 0.00440 0.0125 1,1,1-Trichloroethane U 0.000923 0.00250 1,1,2-Trichloroethane U 0.000597 0.00250 Trichloroethene U 0.000584 0.00100 Trichlorofluoromethane U 0.000827 0.00250 1,2,3-Trichloropropane U 0.00162 0.0125 1,2,4-Trimethylbenzene U 0.00158 0.00500 1,2,3-Trimethylbenzene U 0.00158 0.00500 1,3,5-Trimethylbenzene U 0.00200 0.00500 Vinyl chloride U 0.00116 0.00250 Xylenes, Total U 0.000880 0.00650 (S) Toluene-d8 108 75.0-131 (S) 4-Bromofluorobenzene 93.8 67.0-138 (S) 1,2-Dichloroethane-d4 80.9 70.0-130 Laboratory Control Sample (LCS) • Laboratory Control Sample Duplicate (LCSD) (LCS) R3845773-1 10/06/22 19:45 • (LCSD) R3845773-2 10/06/22 20:04 Spike Amount LCS Result LCSD Result LCS Rec. LCSD Rec. Rec. Limits LCS Qualifier LCSD Qualifier RPD RPD Limits Analyte mg/kg mg/kg mg/kg %%%%% Acetone 0.625 0.722 1.16 116 186 10.0-160 J3 J4 46.5 31 Acrylonitrile 0.625 0.614 0.726 98.2 116 45.0-153 16.7 22 Benzene 0.125 0.131 0.127 105 102 70.0-123 3.10 20 Bromobenzene 0.125 0.123 0.124 98.4 99.2 73.0-121 0.810 20 Bromodichloromethane 0.125 0.132 0.130 106 104 73.0-121 1.53 20 1 Cp 2 Tc 3 Ss 4 Cn 5 Sr 6 Qc 7 Gl 8 Al 9 Sc ACCOUNT:PROJECT:SDG:DATE/TIME:PAGE: Tetra Tech Inc. - UT L1540992 10/17/22 15:01 42 of 64 ACCOUNT:PROJECT:SDG:DATE/TIME:PAGE: Tetra Tech Inc. - UT L1540992 10/17/22 15:23 42 of 64 QUALITY CONTROL SUMMARYWG1938594 Volatile Organic Compounds (GC/MS) by Method 8260B L1540992-01,02 Laboratory Control Sample (LCS) • Laboratory Control Sample Duplicate (LCSD) (LCS) R3845773-1 10/06/22 19:45 • (LCSD) R3845773-2 10/06/22 20:04 Spike Amount LCS Result LCSD Result LCS Rec. LCSD Rec. Rec. Limits LCS Qualifier LCSD Qualifier RPD RPD Limits Analyte mg/kg mg/kg mg/kg %%%%% Bromoform 0.125 0.124 0.125 99.2 100 64.0-132 0.803 20 Bromomethane 0.125 0.112 0.112 89.6 89.6 56.0-147 0.000 20 n-Butylbenzene 0.125 0.111 0.113 88.8 90.4 68.0-135 1.79 20 sec-Butylbenzene 0.125 0.120 0.124 96.0 99.2 74.0-130 3.28 20 tert-Butylbenzene 0.125 0.123 0.123 98.4 98.4 75.0-127 0.000 20 Carbon tetrachloride 0.125 0.135 0.134 108 107 66.0-128 0.743 20 Chlorobenzene 0.125 0.128 0.128 102 102 76.0-128 0.000 20 Chlorodibromomethane 0.125 0.128 0.125 102 100 74.0-127 2.37 20 Chloroethane 0.125 0.125 0.122 100 97.6 61.0-134 2.43 20 Chloroform 0.125 0.126 0.125 101 100 72.0-123 0.797 20 Chloromethane 0.125 0.125 0.126 100 101 51.0-138 0.797 20 2-Chlorotoluene 0.125 0.126 0.128 101 102 75.0-124 1.57 20 4-Chlorotoluene 0.125 0.125 0.130 100 104 75.0-124 3.92 20 1,2-Dibromo-3-Chloropropane 0.125 0.124 0.115 99.2 92.0 59.0-130 7.53 20 1,2-Dibromoethane 0.125 0.131 0.129 105 103 74.0-128 1.54 20 Dibromomethane 0.125 0.128 0.137 102 110 75.0-122 6.79 20 1,2-Dichlorobenzene 0.125 0.115 0.115 92.0 92.0 76.0-124 0.000 20 1,3-Dichlorobenzene 0.125 0.124 0.128 99.2 102 76.0-125 3.17 20 1,4-Dichlorobenzene 0.125 0.116 0.118 92.8 94.4 77.0-121 1.71 20 Dichlorodifluoromethane 0.125 0.115 0.111 92.0 88.8 43.0-156 3.54 20 1,1-Dichloroethane 0.125 0.127 0.131 102 105 70.0-127 3.10 20 1,2-Dichloroethane 0.125 0.128 0.126 102 101 65.0-131 1.57 20 1,1-Dichloroethene 0.125 0.127 0.127 102 102 65.0-131 0.000 20 cis-1,2-Dichloroethene 0.125 0.121 0.124 96.8 99.2 73.0-125 2.45 20 trans-1,2-Dichloroethene 0.125 0.127 0.129 102 103 71.0-125 1.56 20 1,2-Dichloropropane 0.125 0.124 0.126 99.2 101 74.0-125 1.60 20 1,1-Dichloropropene 0.125 0.132 0.130 106 104 73.0-125 1.53 20 1,3-Dichloropropane 0.125 0.122 0.122 97.6 97.6 80.0-125 0.000 20 cis-1,3-Dichloropropene 0.125 0.125 0.128 100 102 76.0-127 2.37 20 trans-1,3-Dichloropropene 0.125 0.129 0.124 103 99.2 73.0-127 3.95 20 2,2-Dichloropropane 0.125 0.122 0.117 97.6 93.6 59.0-135 4.18 20 Di-isopropyl ether 0.125 0.134 0.132 107 106 60.0-136 1.50 20 Ethylbenzene 0.125 0.125 0.127 100 102 74.0-126 1.59 20 Hexachloro-1,3-butadiene 0.125 0.0856 0.0814 68.5 65.1 57.0-150 5.03 20 Isopropylbenzene 0.125 0.125 0.130 100 104 72.0-127 3.92 20 p-Isopropyltoluene 0.125 0.118 0.124 94.4 99.2 72.0-133 4.96 20 2-Butanone (MEK)0.625 0.634 0.768 101 123 30.0-160 19.1 24 Methylene Chloride 0.125 0.126 0.123 101 98.4 68.0-123 2.41 20 4-Methyl-2-pentanone (MIBK) 0.625 0.699 0.725 112 116 56.0-143 3.65 20 Methyl tert-butyl ether 0.125 0.126 0.127 101 102 66.0-132 0.791 20 1 Cp 2 Tc 3 Ss 4 Cn 5 Sr 6 Qc 7 Gl 8 Al 9 Sc ACCOUNT:PROJECT:SDG:DATE/TIME:PAGE: Tetra Tech Inc. - UT L1540992 10/17/22 15:01 43 of 64 ACCOUNT:PROJECT:SDG:DATE/TIME:PAGE: Tetra Tech Inc. - UT L1540992 10/17/22 15:23 43 of 64 QUALITY CONTROL SUMMARYWG1938594 Volatile Organic Compounds (GC/MS) by Method 8260B L1540992-01,02 Laboratory Control Sample (LCS) • Laboratory Control Sample Duplicate (LCSD) (LCS) R3845773-1 10/06/22 19:45 • (LCSD) R3845773-2 10/06/22 20:04 Spike Amount LCS Result LCSD Result LCS Rec. LCSD Rec. Rec. Limits LCS Qualifier LCSD Qualifier RPD RPD Limits Analyte mg/kg mg/kg mg/kg %%%%% Naphthalene 0.125 0.121 0.108 96.8 86.4 59.0-130 11.4 20 n-Propylbenzene 0.125 0.127 0.130 102 104 74.0-126 2.33 20 Styrene 0.125 0.129 0.128 103 102 72.0-127 0.778 20 1,1,1,2-Tetrachloroethane 0.125 0.136 0.133 109 106 74.0-129 2.23 20 1,1,2,2-Tetrachloroethane 0.125 0.110 0.106 88.0 84.8 68.0-128 3.70 20 1,1,2-Trichlorotrifluoroethane 0.125 0.122 0.122 97.6 97.6 61.0-139 0.000 20 Tetrachloroethene 0.125 0.129 0.131 103 105 70.0-136 1.54 20 Toluene 0.125 0.132 0.129 106 103 75.0-121 2.30 20 1,2,3-Trichlorobenzene 0.125 0.127 0.104 102 83.2 59.0-139 19.9 20 1,2,4-Trichlorobenzene 0.125 0.0922 0.0873 73.8 69.8 62.0-137 5.46 20 1,1,1-Trichloroethane 0.125 0.125 0.130 100 104 69.0-126 3.92 20 1,1,2-Trichloroethane 0.125 0.123 0.120 98.4 96.0 78.0-123 2.47 20 Trichloroethene 0.125 0.155 0.153 124 122 76.0-126 1.30 20 Trichlorofluoromethane 0.125 0.135 0.130 108 104 61.0-142 3.77 20 1,2,3-Trichloropropane 0.125 0.130 0.126 104 101 67.0-129 3.12 20 1,2,4-Trimethylbenzene 0.125 0.121 0.124 96.8 99.2 70.0-126 2.45 20 1,2,3-Trimethylbenzene 0.125 0.117 0.117 93.6 93.6 74.0-124 0.000 20 1,3,5-Trimethylbenzene 0.125 0.124 0.122 99.2 97.6 73.0-127 1.63 20 Vinyl chloride 0.125 0.124 0.133 99.2 106 63.0-134 7.00 20 Xylenes, Total 0.375 0.381 0.383 102 102 72.0-127 0.524 20 (S) Toluene-d8 97.9 97.1 75.0-131 (S) 4-Bromofluorobenzene 99.4 103 67.0-138 (S) 1,2-Dichloroethane-d4 91.3 95.2 70.0-130 1 Cp 2 Tc 3 Ss 4 Cn 5 Sr 6 Qc 7 Gl 8 Al 9 Sc ACCOUNT:PROJECT:SDG:DATE/TIME:PAGE: Tetra Tech Inc. - UT L1540992 10/17/22 15:01 44 of 64 ACCOUNT:PROJECT:SDG:DATE/TIME:PAGE: Tetra Tech Inc. - UT L1540992 10/17/22 15:23 44 of 64 QUALITY CONTROL SUMMARYWG1938188 Semi-Volatile Organic Compounds (GC) by Method 8015 L1540992-03,04 Method Blank (MB) (MB) R3846550-1 10/07/22 11:25 MB Result MB Qualifier MB MDL MB RDL Analyte mg/l mg/l mg/l C10-C28 Diesel Range U 0.0222 0.100 C28-C40 Oil Range U 0.0118 0.100 (S) o-Terphenyl 95.5 52.0-156 Laboratory Control Sample (LCS) • Laboratory Control Sample Duplicate (LCSD) (LCS) R3846550-2 10/07/22 11:52 • (LCSD) R3846550-3 10/07/22 12:19 Spike Amount LCS Result LCSD Result LCS Rec. LCSD Rec. Rec. Limits LCS Qualifier LCSD Qualifier RPD RPD Limits Analyte mg/l mg/l mg/l %%%%% C10-C28 Diesel Range 1.50 1.40 2.15 93.3 143 50.0-150 J3 42.3 20 (S) o-Terphenyl 119 80.5 52.0-156 1 Cp 2 Tc 3 Ss 4 Cn 5 Sr 6 Qc 7 Gl 8 Al 9 Sc ACCOUNT:PROJECT:SDG:DATE/TIME:PAGE: Tetra Tech Inc. - UT L1540992 10/17/22 15:01 45 of 64 ACCOUNT:PROJECT:SDG:DATE/TIME:PAGE: Tetra Tech Inc. - UT L1540992 10/17/22 15:23 45 of 64 QUALITY CONTROL SUMMARYWG1938249 Semi-Volatile Organic Compounds (GC) by Method 8015 L1540992-01,02 Method Blank (MB) (MB) R3845979-2 10/07/22 11:13 MB Result MB Qualifier MB MDL MB RDL Analyte mg/kg mg/kg mg/kg C10-C28 Diesel Range U 1.61 4.00 C28-C40 Oil Range U 0.274 4.00 (S) o-Terphenyl 56.9 18.0-148 Laboratory Control Sample (LCS) (LCS) R3845979-1 10/07/22 10:59 Spike Amount LCS Result LCS Rec. Rec. Limits LCS Qualifier Analyte mg/kg mg/kg %% C10-C28 Diesel Range 50.0 34.1 68.2 50.0-150 (S) o-Terphenyl 62.9 18.0-148 L1540839-06 Original Sample (OS) • Matrix Spike (MS) • Matrix Spike Duplicate (MSD) (OS) L1540839-06 10/07/22 12:12 • (MS) R3845979-3 10/07/22 12:25 • (MSD) R3845979-4 10/07/22 12:39 Spike Amount (dry) Original Result (dry)MS Result (dry)MSD Result (dry)MS Rec. MSD Rec. Dilution Rec. Limits MS Qualifier MSD Qualifier RPD RPD Limits Analyte mg/kg %%%%% C10-C28 Diesel Range 52.1 ND 27.0 28.6 51.9 54.8 1 50.0-150 5.51 20 (S) o-Terphenyl 32.5 41.8 18.0-148 1 Cp 2 Tc 3 Ss 4 Cn 5 Sr 6 Qc 7 Gl 8 Al 9 Sc ACCOUNT:PROJECT:SDG:DATE/TIME:PAGE: Tetra Tech Inc. - UT L1540992 10/17/22 15:01 46 of 64 ACCOUNT:PROJECT:SDG:DATE/TIME:PAGE: Tetra Tech Inc. - UT L1540992 10/17/22 15:23 46 of 64 QUALITY CONTROL SUMMARYWG1936344 Semi Volatile Organic Compounds (GC/MS) by Method 8270C L1540992-03,04 Method Blank (MB) (MB) R3845004-2 10/05/22 10:32 MB Result MB Qualifier MB MDL MB RDL Analyte mg/l mg/l mg/l Acenaphthene U 0.0000886 0.00100 Acenaphthylene U 0.0000921 0.00100 Anthracene U 0.0000804 0.00100 Benzidine U 0.00374 0.0100 Benzo(a)anthracene U 0.000199 0.00100 Benzo(b)fluoranthene U 0.000130 0.00100 Benzo(k)fluoranthene U 0.000120 0.00100 Benzo(g,h,i)perylene U 0.000121 0.00100 Benzo(a)pyrene U 0.0000381 0.00100 Bis(2-chlorethoxy)methane U 0.000116 0.0100 Bis(2-chloroethyl)ether U 0.000137 0.0100 2,2-Oxybis(1-Chloropropane) U 0.000210 0.0100 4-Bromophenyl-phenylether U 0.0000877 0.0100 2-Chloronaphthalene U 0.0000648 0.00100 4-Chlorophenyl-phenylether U 0.0000926 0.0100 Chrysene U 0.000130 0.00100 Dibenz(a,h)anthracene U 0.0000644 0.00100 1,2-Dichlorobenzene U 0.0000713 0.0100 1,3-Dichlorobenzene U 0.000132 0.0100 1,4-Dichlorobenzene U 0.0000942 0.0100 3,3-Dichlorobenzidine U 0.000212 0.0100 2,4-Dinitrotoluene U 0.0000983 0.0100 2,6-Dinitrotoluene U 0.000250 0.0100 Fluoranthene U 0.000102 0.00100 Fluorene U 0.0000844 0.00100 Hexachlorobenzene U 0.0000755 0.00100 Hexachloro-1,3-butadiene U 0.0000968 0.0100 Hexachlorocyclopentadiene U 0.0000598 0.0100 Hexachloroethane U 0.000127 0.0100 Indeno(1,2,3-cd)pyrene U 0.000279 0.00100 Isophorone U 0.000143 0.0100 Naphthalene U 0.000159 0.00100 Nitrobenzene U 0.000297 0.0100 n-Nitrosodimethylamine U 0.000998 0.0100 n-Nitrosodiphenylamine U 0.00237 0.0100 n-Nitrosodi-n-propylamine U 0.000261 0.0100 Phenanthrene U 0.000112 0.00100 Benzylbutyl phthalate U 0.000765 0.00300 Bis(2-ethylhexyl)phthalate U 0.000895 0.00300 Di-n-butyl phthalate U 0.000453 0.00300 1 Cp 2 Tc 3 Ss 4 Cn 5 Sr 6 Qc 7 Gl 8 Al 9 Sc ACCOUNT:PROJECT:SDG:DATE/TIME:PAGE: Tetra Tech Inc. - UT L1540992 10/17/22 15:01 47 of 64 ACCOUNT:PROJECT:SDG:DATE/TIME:PAGE: Tetra Tech Inc. - UT L1540992 10/17/22 15:23 47 of 64 QUALITY CONTROL SUMMARYWG1936344 Semi Volatile Organic Compounds (GC/MS) by Method 8270C L1540992-03,04 Method Blank (MB) (MB) R3845004-2 10/05/22 10:32 MB Result MB Qualifier MB MDL MB RDL Analyte mg/l mg/l mg/l Diethyl phthalate U 0.000287 0.00300 Dimethyl phthalate U 0.000260 0.00300 Di-n-octyl phthalate U 0.000932 0.00300 Pyrene U 0.000107 0.00100 1,2,4-Trichlorobenzene U 0.0000698 0.0100 4-Chloro-3-methylphenol U 0.000131 0.0100 2-Chlorophenol U 0.000133 0.0100 2,4-Dichlorophenol U 0.000102 0.0100 2,4-Dimethylphenol U 0.0000636 0.0100 4,6-Dinitro-2-methylphenol U 0.00112 0.0100 2,4-Dinitrophenol U 0.00593 0.0100 2-Nitrophenol U 0.000117 0.0100 4-Nitrophenol U 0.000143 0.0100 Pentachlorophenol U 0.000313 0.0100 Phenol U 0.00433 0.0100 2,4,6-Trichlorophenol U 0.000100 0.0100 (S) 2-Fluorophenol 31.4 10.0-120 (S) Phenol-d5 17.9 10.0-120 (S) Nitrobenzene-d5 68.1 10.0-127 (S) 2-Fluorobiphenyl 70.8 10.0-130 (S) 2,4,6-Tribromophenol 72.0 10.0-155 (S) p-Terphenyl-d14 66.2 10.0-128 Laboratory Control Sample (LCS) (LCS) R3845004-1 10/05/22 10:10 Spike Amount LCS Result LCS Rec. Rec. Limits LCS Qualifier Analyte mg/l mg/l %% Acenaphthene 0.0500 0.0416 83.2 41.0-120 Acenaphthylene 0.0500 0.0439 87.8 43.0-120 Anthracene 0.0500 0.0443 88.6 45.0-120 Benzidine 0.100 0.00805 8.05 10.0-120 J4 Benzo(a)anthracene 0.0500 0.0475 95.0 47.0-120 Benzo(b)fluoranthene 0.0500 0.0482 96.4 46.0-120 Benzo(k)fluoranthene 0.0500 0.0484 96.8 46.0-120 Benzo(g,h,i)perylene 0.0500 0.0495 99.0 48.0-121 Benzo(a)pyrene 0.0500 0.0524 105 47.0-120 Bis(2-chlorethoxy)methane 0.0500 0.0374 74.8 33.0-120 Bis(2-chloroethyl)ether 0.0500 0.0416 83.2 23.0-120 1 Cp 2 Tc 3 Ss 4 Cn 5 Sr 6 Qc 7 Gl 8 Al 9 Sc ACCOUNT:PROJECT:SDG:DATE/TIME:PAGE: Tetra Tech Inc. - UT L1540992 10/17/22 15:01 48 of 64 ACCOUNT:PROJECT:SDG:DATE/TIME:PAGE: Tetra Tech Inc. - UT L1540992 10/17/22 15:23 48 of 64 QUALITY CONTROL SUMMARYWG1936344 Semi Volatile Organic Compounds (GC/MS) by Method 8270C L1540992-03,04 Laboratory Control Sample (LCS) (LCS) R3845004-1 10/05/22 10:10 Spike Amount LCS Result LCS Rec. Rec. Limits LCS Qualifier Analyte mg/l mg/l %% 2,2-Oxybis(1-Chloropropane) 0.0500 0.0388 77.6 28.0-120 4-Bromophenyl-phenylether 0.0500 0.0443 88.6 45.0-120 2-Chloronaphthalene 0.0500 0.0423 84.6 37.0-120 4-Chlorophenyl-phenylether 0.0500 0.0436 87.2 44.0-120 Chrysene 0.0500 0.0482 96.4 48.0-120 Dibenz(a,h)anthracene 0.0500 0.0498 99.6 47.0-120 1,2-Dichlorobenzene 0.0500 0.0400 80.0 20.0-120 1,3-Dichlorobenzene 0.0500 0.0395 79.0 17.0-120 1,4-Dichlorobenzene 0.0500 0.0393 78.6 18.0-120 3,3-Dichlorobenzidine 0.100 0.104 104 44.0-120 2,4-Dinitrotoluene 0.0500 0.0495 99.0 49.0-124 2,6-Dinitrotoluene 0.0500 0.0468 93.6 46.0-120 Fluoranthene 0.0500 0.0490 98.0 51.0-120 Fluorene 0.0500 0.0424 84.8 47.0-120 Hexachlorobenzene 0.0500 0.0427 85.4 44.0-120 Hexachloro-1,3-butadiene 0.0500 0.0375 75.0 19.0-120 Hexachlorocyclopentadiene 0.0500 0.0122 24.4 15.0-120 Hexachloroethane 0.0500 0.0390 78.0 15.0-120 Indeno(1,2,3-cd)pyrene 0.0500 0.0490 98.0 49.0-122 Isophorone 0.0500 0.0349 69.8 36.0-120 Naphthalene 0.0500 0.0351 70.2 27.0-120 Nitrobenzene 0.0500 0.0386 77.2 27.0-120 n-Nitrosodimethylamine 0.0500 0.0219 43.8 10.0-120 n-Nitrosodiphenylamine 0.0500 0.0426 85.2 47.0-120 n-Nitrosodi-n-propylamine 0.0500 0.0402 80.4 31.0-120 Phenanthrene 0.0500 0.0425 85.0 46.0-120 Benzylbutyl phthalate 0.0500 0.0458 91.6 43.0-121 Bis(2-ethylhexyl)phthalate 0.0500 0.0468 93.6 43.0-122 Di-n-butyl phthalate 0.0500 0.0469 93.8 49.0-121 Diethyl phthalate 0.0500 0.0445 89.0 48.0-122 Dimethyl phthalate 0.0500 0.0454 90.8 48.0-120 Di-n-octyl phthalate 0.0500 0.0490 98.0 42.0-125 Pyrene 0.0500 0.0437 87.4 47.0-120 1,2,4-Trichlorobenzene 0.0500 0.0374 74.8 24.0-120 4-Chloro-3-methylphenol 0.0500 0.0348 69.6 40.0-120 2-Chlorophenol 0.0500 0.0352 70.4 25.0-120 2,4-Dichlorophenol 0.0500 0.0388 77.6 36.0-120 2,4-Dimethylphenol 0.0500 0.0352 70.4 33.0-120 4,6-Dinitro-2-methylphenol 0.0500 0.0482 96.4 38.0-138 2,4-Dinitrophenol 0.0500 0.0420 84.0 10.0-120 1 Cp 2 Tc 3 Ss 4 Cn 5 Sr 6 Qc 7 Gl 8 Al 9 Sc ACCOUNT:PROJECT:SDG:DATE/TIME:PAGE: Tetra Tech Inc. - UT L1540992 10/17/22 15:01 49 of 64 ACCOUNT:PROJECT:SDG:DATE/TIME:PAGE: Tetra Tech Inc. - UT L1540992 10/17/22 15:23 49 of 64 QUALITY CONTROL SUMMARYWG1936344 Semi Volatile Organic Compounds (GC/MS) by Method 8270C L1540992-03,04 Laboratory Control Sample (LCS) (LCS) R3845004-1 10/05/22 10:10 Spike Amount LCS Result LCS Rec. Rec. Limits LCS Qualifier Analyte mg/l mg/l %% 2-Nitrophenol 0.0500 0.0402 80.4 31.0-120 4-Nitrophenol 0.0500 0.0157 31.4 10.0-120 Pentachlorophenol 0.0500 0.0423 84.6 23.0-120 Phenol 0.0500 0.0134 26.8 10.0-120 2,4,6-Trichlorophenol 0.0500 0.0452 90.4 42.0-120 (S) 2-Fluorophenol 41.2 10.0-120 (S) Phenol-d5 24.5 10.0-120 (S) Nitrobenzene-d5 69.2 10.0-127 (S) 2-Fluorobiphenyl 79.8 10.0-130 (S) 2,4,6-Tribromophenol 84.0 10.0-155 (S) p-Terphenyl-d14 73.2 10.0-128 L1540970-01 Original Sample (OS) • Matrix Spike (MS) • Matrix Spike Duplicate (MSD) (OS) L1540970-01 10/06/22 02:32 • (MS) R3845331-1 10/06/22 02:53 • (MSD) R3845331-2 10/06/22 03:14 Spike Amount Original Result MS Result MSD Result MS Rec. MSD Rec. Dilution Rec. Limits MS Qualifier MSD Qualifier RPD RPD Limits Analyte mg/l mg/l mg/l mg/l %%%%% Acenaphthene 0.0455 ND 0.0308 0.0385 67.7 84.6 1 28.0-120 22.2 25 Acenaphthylene 0.0455 ND 0.0325 0.0405 71.4 89.0 1 31.0-121 21.9 25 Anthracene 0.0455 ND 0.0320 0.0402 70.3 88.4 1 36.0-120 22.7 23 Benzidine 0.0910 ND ND ND 0.000 0.000 1 10.0-120 J6 J6 0.000 37 Benzo(a)anthracene 0.0455 ND 0.0332 0.0406 73.0 89.2 1 39.0-120 20.1 23 Benzo(b)fluoranthene 0.0455 ND 0.0353 0.0419 77.6 92.1 1 37.0-120 17.1 23 Benzo(k)fluoranthene 0.0455 ND 0.0341 0.0407 74.9 89.5 1 37.0-120 17.6 26 Benzo(g,h,i)perylene 0.0455 ND 0.0335 0.0393 73.6 86.4 1 37.0-123 15.9 25 Benzo(a)pyrene 0.0455 ND 0.0374 0.0447 82.2 98.2 1 37.0-120 17.8 24 Bis(2-chlorethoxy)methane 0.0455 ND 0.0286 0.0348 62.9 76.5 1 17.0-120 19.6 31 Bis(2-chloroethyl)ether 0.0455 ND 0.0280 0.0368 61.5 80.9 1 14.0-120 27.2 33 2,2-Oxybis(1-Chloropropane) 0.0455 ND 0.0271 0.0347 59.6 76.3 1 18.0-120 24.6 34 4-Bromophenyl-phenylether 0.0455 ND 0.0337 0.0424 74.1 93.2 1 37.0-120 22.9 24 2-Chloronaphthalene 0.0455 ND 0.0307 0.0379 67.5 83.3 1 29.0-120 21.0 28 4-Chlorophenyl-phenylether 0.0455 ND 0.0340 0.0422 74.7 92.7 1 36.0-120 21.5 23 Chrysene 0.0455 ND 0.0332 0.0413 73.0 90.8 1 38.0-120 21.7 23 Dibenz(a,h)anthracene 0.0455 ND 0.0343 0.0397 75.4 87.3 1 36.0-121 14.6 24 1,2-Dichlorobenzene 0.0455 ND 0.0264 0.0355 58.0 78.0 1 18.0-120 29.4 40 1,3-Dichlorobenzene 0.0455 ND 0.0248 0.0337 54.5 74.1 1 15.0-120 30.4 40 1,4-Dichlorobenzene 0.0455 ND 0.0253 0.0344 55.6 75.6 1 17.0-120 30.5 40 3,3-Dichlorobenzidine 0.0910 ND 0.0323 0.0521 35.5 57.3 1 10.0-134 J3 46.9 30 2,4-Dinitrotoluene 0.0455 ND 0.0361 0.0466 79.3 102 1 39.0-125 J3 25.4 25 1 Cp 2 Tc 3 Ss 4 Cn 5 Sr 6 Qc 7 Gl 8 Al 9 Sc ACCOUNT:PROJECT:SDG:DATE/TIME:PAGE: Tetra Tech Inc. - UT L1540992 10/17/22 15:01 50 of 64 ACCOUNT:PROJECT:SDG:DATE/TIME:PAGE: Tetra Tech Inc. - UT L1540992 10/17/22 15:23 50 of 64 QUALITY CONTROL SUMMARYWG1936344 Semi Volatile Organic Compounds (GC/MS) by Method 8270C L1540992-03,04 L1540970-01 Original Sample (OS) • Matrix Spike (MS) • Matrix Spike Duplicate (MSD) (OS) L1540970-01 10/06/22 02:32 • (MS) R3845331-1 10/06/22 02:53 • (MSD) R3845331-2 10/06/22 03:14 Spike Amount Original Result MS Result MSD Result MS Rec. MSD Rec. Dilution Rec. Limits MS Qualifier MSD Qualifier RPD RPD Limits Analyte mg/l mg/l mg/l mg/l %%%%% 2,6-Dinitrotoluene 0.0455 ND 0.0338 0.0430 74.3 94.5 1 36.0-120 24.0 27 Fluoranthene 0.0455 ND 0.0351 0.0435 77.1 95.6 1 41.0-121 21.4 22 Fluorene 0.0455 ND 0.0334 0.0411 73.4 90.3 1 37.0-120 20.7 24 Hexachlorobenzene 0.0455 ND 0.0325 0.0396 71.4 87.0 1 35.0-122 19.7 24 Hexachloro-1,3-butadiene 0.0455 ND 0.0264 0.0326 58.0 71.6 1 12.0-120 21.0 34 Hexachlorocyclopentadiene 0.0455 ND ND 0.0104 16.7 22.9 1 10.0-120 31.4 33 Hexachloroethane 0.0455 ND 0.0269 0.0359 59.1 78.9 1 10.0-120 28.7 40 Indeno(1,2,3-cd)pyrene 0.0455 ND 0.0360 0.0421 79.1 92.5 1 38.0-125 15.6 24 Isophorone 0.0455 ND 0.0264 0.0326 58.0 71.6 1 21.0-120 21.0 27 Naphthalene 0.0455 ND 0.0254 0.0314 55.8 69.0 1 10.0-120 21.1 31 Nitrobenzene 0.0455 ND 0.0305 0.0373 67.0 82.0 1 12.0-120 20.1 30 n-Nitrosodimethylamine 0.0455 ND 0.0142 0.0190 31.2 41.8 1 10.0-120 28.9 40 n-Nitrosodiphenylamine 0.0455 ND 0.0315 0.0390 69.2 85.7 1 37.0-120 21.3 24 n-Nitrosodi-n-propylamine 0.0455 ND 0.0315 0.0393 69.2 86.4 1 16.0-120 22.0 30 Phenanthrene 0.0455 ND 0.0323 0.0398 71.0 87.5 1 33.0-120 20.8 22 Benzylbutyl phthalate 0.0455 ND 0.0349 0.0444 76.7 97.6 1 34.0-126 24.0 24 Bis(2-ethylhexyl)phthalate 0.0455 ND 0.0356 0.0447 78.2 98.2 1 33.0-126 22.7 25 Di-n-butyl phthalate 0.0455 ND 0.0357 0.0444 78.5 97.6 1 35.0-128 21.7 23 Diethyl phthalate 0.0455 ND 0.0345 0.0437 75.8 96.0 1 39.0-125 23.5 24 Dimethyl phthalate 0.0455 ND 0.0326 0.0418 71.6 91.9 1 37.0-120 J3 24.7 24 Di-n-octyl phthalate 0.0455 ND 0.0367 0.0447 80.7 98.2 1 25.0-135 19.7 26 Pyrene 0.0455 ND 0.0317 0.0394 69.7 86.6 1 39.0-120 21.7 22 1,2,4-Trichlorobenzene 0.0455 ND 0.0261 0.0330 57.4 72.5 1 15.0-120 23.4 31 4-Chloro-3-methylphenol 0.0455 ND 0.0251 0.0307 55.2 67.5 1 26.0-120 20.1 27 2-Chlorophenol 0.0455 ND 0.0205 0.0273 45.1 60.0 1 18.0-120 28.5 34 2,4-Dichlorophenol 0.0455 ND 0.0251 0.0314 55.2 69.0 1 19.0-120 22.3 27 2,4-Dimethylphenol 0.0455 ND 0.0234 0.0295 51.4 64.8 1 15.0-120 23.1 28 4,6-Dinitro-2-methylphenol 0.0455 ND 0.0371 0.0463 81.5 102 1 10.0-144 22.1 39 2,4-Dinitrophenol 0.0455 ND 0.0340 0.0425 74.7 93.4 1 10.0-120 22.2 40 2-Nitrophenol 0.0455 ND 0.0286 0.0345 62.9 75.8 1 20.0-120 18.7 30 4-Nitrophenol 0.0455 ND 0.0107 0.0140 23.5 30.8 1 10.0-120 26.7 40 Pentachlorophenol 0.0455 ND 0.0367 0.0445 80.7 97.8 1 10.0-128 19.2 37 Phenol 0.0455 ND ND 0.0109 16.8 24.0 1 10.0-120 35.0 40 2,4,6-Trichlorophenol 0.0455 ND 0.0330 0.0394 72.5 86.6 1 26.0-120 17.7 31 (S) 2-Fluorophenol 23.9 33.9 10.0-120 (S) Phenol-d5 16.0 22.3 10.0-120 (S) Nitrobenzene-d5 57.8 70.2 10.0-127 (S) 2-Fluorobiphenyl 67.0 83.2 10.0-130 (S) 2,4,6-Tribromophenol 75.8 94.0 10.0-155 (S) p-Terphenyl-d14 60.2 75.3 10.0-128 1 Cp 2 Tc 3 Ss 4 Cn 5 Sr 6 Qc 7 Gl 8 Al 9 Sc ACCOUNT:PROJECT:SDG:DATE/TIME:PAGE: Tetra Tech Inc. - UT L1540992 10/17/22 15:01 51 of 64 ACCOUNT:PROJECT:SDG:DATE/TIME:PAGE: Tetra Tech Inc. - UT L1540992 10/17/22 15:23 51 of 64 QUALITY CONTROL SUMMARYWG1938239 Semi Volatile Organic Compounds (GC/MS) by Method 8270C L1540992-01 Method Blank (MB) (MB) R3846738-2 10/09/22 10:32 MB Result MB Qualifier MB MDL MB RDL Analyte mg/kg mg/kg mg/kg Acenaphthene U 0.00539 0.0333 Acenaphthylene U 0.00469 0.0333 Anthracene U 0.00593 0.0333 Benzidine U 0.0626 1.67 Benzo(a)anthracene U 0.00587 0.0333 Benzo(b)fluoranthene U 0.00621 0.0333 Benzo(k)fluoranthene U 0.00592 0.0333 Benzo(g,h,i)perylene U 0.00609 0.0333 Benzo(a)pyrene U 0.00619 0.0333 Bis(2-chlorethoxy)methane U 0.0100 0.333 Bis(2-chloroethyl)ether U 0.0110 0.333 2,2-oxybis(1-chloropropane) U 0.0144 0.333 4-Bromophenyl-phenylether U 0.0117 0.333 2-Chloronaphthalene U 0.00585 0.0333 4-Chlorophenyl-phenylether U 0.0116 0.333 Chrysene U 0.00662 0.0333 Dibenz(a,h)anthracene U 0.00923 0.0333 3,3-Dichlorobenzidine U 0.0123 0.333 2,4-Dinitrotoluene U 0.00955 0.333 2,6-Dinitrotoluene U 0.0109 0.333 Fluoranthene U 0.00601 0.0333 Fluorene U 0.00542 0.0333 Hexachlorobenzene U 0.0118 0.333 Hexachloro-1,3-butadiene U 0.0112 0.333 Hexachlorocyclopentadiene U 0.0175 0.333 Hexachloroethane U 0.0131 0.333 Indeno(1,2,3-cd)pyrene U 0.00941 0.0333 Isophorone U 0.0102 0.333 Naphthalene U 0.00836 0.0333 Nitrobenzene U 0.0116 0.333 n-Nitrosodimethylamine U 0.0494 0.333 n-Nitrosodiphenylamine U 0.0252 0.333 n-Nitrosodi-n-propylamine U 0.0111 0.333 Phenanthrene U 0.00661 0.0333 Benzylbutyl phthalate U 0.0104 0.333 Bis(2-ethylhexyl)phthalate U 0.0422 0.333 Di-n-butyl phthalate U 0.0114 0.333 Diethyl phthalate U 0.0110 0.333 Dimethyl phthalate U 0.0706 0.333 Di-n-octyl phthalate U 0.0225 0.333 1 Cp 2 Tc 3 Ss 4 Cn 5 Sr 6 Qc 7 Gl 8 Al 9 Sc ACCOUNT:PROJECT:SDG:DATE/TIME:PAGE: Tetra Tech Inc. - UT L1540992 10/17/22 15:01 52 of 64 ACCOUNT:PROJECT:SDG:DATE/TIME:PAGE: Tetra Tech Inc. - UT L1540992 10/17/22 15:23 52 of 64 QUALITY CONTROL SUMMARYWG1938239 Semi Volatile Organic Compounds (GC/MS) by Method 8270C L1540992-01 Method Blank (MB) (MB) R3846738-2 10/09/22 10:32 MB Result MB Qualifier MB MDL MB RDL Analyte mg/kg mg/kg mg/kg Pyrene U 0.00648 0.0333 1,2,4-Trichlorobenzene U 0.0104 0.333 4-Chloro-3-methylphenol U 0.0108 0.333 2-Chlorophenol U 0.0110 0.333 2,4-Dichlorophenol U 0.00970 0.333 2,4-Dimethylphenol U 0.00870 0.333 4,6-Dinitro-2-methylphenol U 0.0755 0.333 2,4-Dinitrophenol U 0.0779 0.333 2-Nitrophenol U 0.0119 0.333 4-Nitrophenol U 0.0104 0.333 Pentachlorophenol U 0.00896 0.333 Phenol U 0.0134 0.333 2,4,6-Trichlorophenol U 0.0107 0.333 (S) Nitrobenzene-d5 48.0 10.0-122 (S) 2-Fluorobiphenyl 57.4 15.0-120 (S) p-Terphenyl-d14 64.6 10.0-120 (S) Phenol-d5 50.5 10.0-120 (S) 2-Fluorophenol 56.2 12.0-120 (S) 2,4,6-Tribromophenol 53.0 10.0-127 Laboratory Control Sample (LCS) (LCS) R3846738-1 10/09/22 10:11 Spike Amount LCS Result LCS Rec. Rec. Limits LCS Qualifier Analyte mg/kg mg/kg %% Acenaphthene 0.666 0.324 48.6 38.0-120 Acenaphthylene 0.666 0.348 52.3 40.0-120 Anthracene 0.666 0.322 48.3 42.0-120 Benzidine 1.33 0.185 13.9 10.0-120 Benzo(a)anthracene 0.666 0.378 56.8 44.0-120 Benzo(b)fluoranthene 0.666 0.392 58.9 43.0-120 Benzo(k)fluoranthene 0.666 0.377 56.6 44.0-120 Benzo(g,h,i)perylene 0.666 0.419 62.9 43.0-120 Benzo(a)pyrene 0.666 0.386 58.0 45.0-120 Bis(2-chlorethoxy)methane 0.666 0.254 38.1 20.0-120 Bis(2-chloroethyl)ether 0.666 0.277 41.6 16.0-120 2,2-Oxybis(1-Chloropropane) 0.666 0.296 44.4 23.0-120 4-Bromophenyl-phenylether 0.666 0.354 53.2 40.0-120 2-Chloronaphthalene 0.666 0.324 48.6 35.0-120 1 Cp 2 Tc 3 Ss 4 Cn 5 Sr 6 Qc 7 Gl 8 Al 9 Sc ACCOUNT:PROJECT:SDG:DATE/TIME:PAGE: Tetra Tech Inc. - UT L1540992 10/17/22 15:01 53 of 64 ACCOUNT:PROJECT:SDG:DATE/TIME:PAGE: Tetra Tech Inc. - UT L1540992 10/17/22 15:23 53 of 64 QUALITY CONTROL SUMMARYWG1938239 Semi Volatile Organic Compounds (GC/MS) by Method 8270C L1540992-01 Laboratory Control Sample (LCS) (LCS) R3846738-1 10/09/22 10:11 Spike Amount LCS Result LCS Rec. Rec. Limits LCS Qualifier Analyte mg/kg mg/kg %% 4-Chlorophenyl-phenylether 0.666 0.359 53.9 40.0-120 Chrysene 0.666 0.368 55.3 43.0-120 Dibenz(a,h)anthracene 0.666 0.413 62.0 44.0-120 3,3-Dichlorobenzidine 1.33 0.664 49.9 28.0-120 2,4-Dinitrotoluene 0.666 0.390 58.6 45.0-120 2,6-Dinitrotoluene 0.666 0.362 54.4 42.0-120 Fluoranthene 0.666 0.344 51.7 44.0-120 Fluorene 0.666 0.345 51.8 41.0-120 Hexachlorobenzene 0.666 0.334 50.2 39.0-120 Hexachloro-1,3-butadiene 0.666 0.314 47.1 15.0-120 Hexachlorocyclopentadiene 0.666 0.317 47.6 15.0-120 Hexachloroethane 0.666 0.297 44.6 17.0-120 Indeno(1,2,3-cd)pyrene 0.666 0.388 58.3 45.0-120 Isophorone 0.666 0.230 34.5 23.0-120 Naphthalene 0.666 0.270 40.5 18.0-120 Nitrobenzene 0.666 0.245 36.8 17.0-120 n-Nitrosodimethylamine 0.666 0.207 31.1 10.0-125 n-Nitrosodiphenylamine 0.666 0.262 39.3 40.0-120 J4 n-Nitrosodi-n-propylamine 0.666 0.259 38.9 26.0-120 Phenanthrene 0.666 0.330 49.5 42.0-120 Benzylbutyl phthalate 0.666 0.363 54.5 40.0-120 Bis(2-ethylhexyl)phthalate 0.666 0.351 52.7 41.0-120 Di-n-butyl phthalate 0.666 0.324 48.6 43.0-120 Diethyl phthalate 0.666 0.360 54.1 43.0-120 Dimethyl phthalate 0.666 0.363 54.5 43.0-120 Di-n-octyl phthalate 0.666 0.365 54.8 40.0-120 Pyrene 0.666 0.357 53.6 41.0-120 1,2,4-Trichlorobenzene 0.666 0.310 46.5 17.0-120 4-Chloro-3-methylphenol 0.666 0.301 45.2 28.0-120 2-Chlorophenol 0.666 0.322 48.3 28.0-120 2,4-Dichlorophenol 0.666 0.304 45.6 25.0-120 2,4-Dimethylphenol 0.666 0.283 42.5 15.0-120 4,6-Dinitro-2-methylphenol 0.666 0.352 52.9 16.0-120 2,4-Dinitrophenol 0.666 0.219 32.9 10.0-120 2-Nitrophenol 0.666 0.307 46.1 20.0-120 4-Nitrophenol 0.666 0.355 53.3 27.0-120 Pentachlorophenol 0.666 0.305 45.8 29.0-120 Phenol 0.666 0.283 42.5 28.0-120 2,4,6-Trichlorophenol 0.666 0.338 50.8 37.0-120 (S) Nitrobenzene-d5 34.5 10.0-122 1 Cp 2 Tc 3 Ss 4 Cn 5 Sr 6 Qc 7 Gl 8 Al 9 Sc ACCOUNT:PROJECT:SDG:DATE/TIME:PAGE: Tetra Tech Inc. - UT L1540992 10/17/22 15:01 54 of 64 ACCOUNT:PROJECT:SDG:DATE/TIME:PAGE: Tetra Tech Inc. - UT L1540992 10/17/22 15:23 54 of 64 QUALITY CONTROL SUMMARYWG1938239 Semi Volatile Organic Compounds (GC/MS) by Method 8270C L1540992-01 Laboratory Control Sample (LCS) (LCS) R3846738-1 10/09/22 10:11 Spike Amount LCS Result LCS Rec. Rec. Limits LCS Qualifier Analyte mg/kg mg/kg %% (S) 2-Fluorobiphenyl 48.3 15.0-120 (S) p-Terphenyl-d14 58.3 10.0-120 (S) Phenol-d5 44.6 10.0-120 (S) 2-Fluorophenol 48.8 12.0-120 (S) 2,4,6-Tribromophenol 55.4 10.0-127 L1540922-07 Original Sample (OS) • Matrix Spike (MS) • Matrix Spike Duplicate (MSD) (OS) L1540922-07 10/09/22 15:49 • (MS) R3846738-3 10/09/22 16:11 • (MSD) R3846738-4 10/09/22 16:32 Spike Amount (dry) Original Result (dry)MS Result (dry)MSD Result (dry)MS Rec. MSD Rec. Dilution Rec. Limits MS Qualifier MSD Qualifier RPD RPD Limits Analyte mg/kg mg/kg mg/kg mg/kg %%%%% Acenaphthene 0.792 ND 0.396 0.390 50.0 49.4 1 18.0-120 1.55 32 Acenaphthylene 0.792 ND 0.437 0.419 55.2 53.1 1 25.0-120 4.26 32 Anthracene 0.792 ND 0.425 0.369 53.7 46.8 1 22.0-120 14.1 29 Benzidine 1.58 ND ND ND 0.000 0.000 1 10.0-120 J6 J6 0.000 40 Benzo(a)anthracene 0.792 ND 0.462 0.447 58.3 56.6 1 25.0-120 3.21 29 Benzo(b)fluoranthene 0.792 ND 0.456 0.434 57.5 54.9 1 19.0-122 4.92 31 Benzo(k)fluoranthene 0.792 ND 0.453 0.428 57.2 54.2 1 23.0-120 5.79 30 Benzo(g,h,i)perylene 0.792 ND 0.515 0.477 65.0 60.5 1 10.0-120 7.59 33 Benzo(a)pyrene 0.792 ND 0.460 0.430 58.1 54.5 1 24.0-120 6.82 30 Bis(2-chlorethoxy)methane 0.792 ND ND ND 40.6 37.4 1 10.0-120 8.66 34 Bis(2-chloroethyl)ether 0.792 ND 0.627 0.576 79.1 72.9 1 10.0-120 8.48 40 2,2-Oxybis(1-Chloropropane) 0.792 ND 0.420 0.430 53.1 54.5 1 10.0-120 2.29 40 4-Bromophenyl-phenylether 0.792 ND 0.481 0.406 60.7 51.4 1 27.0-120 17.0 30 2-Chloronaphthalene 0.792 ND 0.411 0.400 51.8 50.6 1 20.0-120 2.70 32 4-Chlorophenyl-phenylether 0.792 ND 0.443 0.428 56.0 54.2 1 24.0-120 3.63 29 Chrysene 0.792 ND 0.474 0.431 59.8 54.6 1 21.0-120 9.40 29 Dibenz(a,h)anthracene 0.792 ND 0.492 0.463 62.1 58.6 1 10.0-120 6.11 32 3,3-Dichlorobenzidine 1.58 ND 0.571 0.545 36.2 34.5 1 10.0-120 4.57 34 2,4-Dinitrotoluene 0.792 ND 0.480 0.456 60.6 57.7 1 30.0-120 5.19 31 2,6-Dinitrotoluene 0.792 ND 0.473 0.457 59.7 57.8 1 25.0-120 3.40 31 Fluoranthene 0.792 ND 0.513 0.434 64.7 54.9 1 18.0-126 16.7 32 Fluorene 0.792 ND 0.429 0.422 54.1 53.4 1 25.0-120 1.71 30 Hexachlorobenzene 0.792 ND 0.436 ND 55.1 46.6 1 27.0-120 16.9 28 Hexachloro-1,3-butadiene 0.792 ND ND ND 48.0 42.6 1 10.0-120 12.2 38 Hexachlorocyclopentadiene 0.792 ND ND ND 27.6 32.5 1 10.0-120 15.9 40 Hexachloroethane 0.792 ND 0.504 0.601 63.7 76.2 1 10.0-120 17.6 40 Indeno(1,2,3-cd)pyrene 0.792 ND 0.487 0.451 61.5 57.1 1 10.0-120 7.77 32 Isophorone 0.792 ND ND ND 36.8 33.7 1 13.0-120 9.15 34 1 Cp 2 Tc 3 Ss 4 Cn 5 Sr 6 Qc 7 Gl 8 Al 9 Sc ACCOUNT:PROJECT:SDG:DATE/TIME:PAGE: Tetra Tech Inc. - UT L1540992 10/17/22 15:01 55 of 64 ACCOUNT:PROJECT:SDG:DATE/TIME:PAGE: Tetra Tech Inc. - UT L1540992 10/17/22 15:23 55 of 64 QUALITY CONTROL SUMMARYWG1938239 Semi Volatile Organic Compounds (GC/MS) by Method 8270C L1540992-01 L1540922-07 Original Sample (OS) • Matrix Spike (MS) • Matrix Spike Duplicate (MSD) (OS) L1540922-07 10/09/22 15:49 • (MS) R3846738-3 10/09/22 16:11 • (MSD) R3846738-4 10/09/22 16:32 Spike Amount (dry) Original Result (dry)MS Result (dry)MSD Result (dry)MS Rec. MSD Rec. Dilution Rec. Limits MS Qualifier MSD Qualifier RPD RPD Limits Analyte mg/kg mg/kg mg/kg mg/kg %%%%% Naphthalene 0.792 ND 0.366 0.371 46.2 46.9 1 10.0-120 1.32 35 Nitrobenzene 0.792 ND ND ND 35.6 33.7 1 10.0-120 5.76 36 n-Nitrosodimethylamine 0.792 ND ND ND 0.000 28.9 1 10.0-127 J6 J3 200 40 n-Nitrosodiphenylamine 0.792 ND ND ND 47.5 40.6 1 17.0-120 16.0 29 n-Nitrosodi-n-propylamine 0.792 ND 0.473 0.479 59.7 60.6 1 10.0-120 1.28 37 Phenanthrene 0.792 ND 0.441 0.374 55.7 47.4 1 17.0-120 16.4 31 Benzylbutyl phthalate 0.792 ND 0.510 0.474 64.4 60.0 1 23.0-120 7.41 30 Bis(2-ethylhexyl)phthalate 0.792 ND 0.469 0.431 59.2 54.6 1 17.0-126 8.37 30 Di-n-butyl phthalate 0.792 ND 0.443 ND 56.0 47.5 1 30.0-120 16.6 29 Diethyl phthalate 0.792 ND 0.440 0.445 55.5 56.3 1 26.0-120 1.10 28 Dimethyl phthalate 0.792 ND 0.441 0.429 55.7 54.3 1 25.0-120 2.79 29 Di-n-octyl phthalate 0.792 ND 0.491 0.451 62.0 57.1 1 21.0-123 8.52 29 Pyrene 0.792 ND 0.499 0.458 63.0 58.0 1 16.0-121 8.63 32 1,2,4-Trichlorobenzene 0.792 ND ND ND 48.6 43.1 1 12.0-120 12.4 37 4-Chloro-3-methylphenol 0.792 ND ND ND 48.5 41.5 1 15.0-120 15.7 30 2-Chlorophenol 0.792 ND 0.418 ND 52.8 48.9 1 15.0-120 7.85 37 2,4-Dichlorophenol 0.792 ND 0.417 ND 52.6 47.8 1 20.0-120 9.79 31 2,4-Dimethylphenol 0.792 ND 0.408 ND 51.5 48.3 1 10.0-120 6.77 33 4,6-Dinitro-2-methylphenol 0.792 ND 0.575 0.524 72.5 66.3 1 10.0-120 9.29 39 2,4-Dinitrophenol 0.792 ND 0.577 0.553 72.9 70.0 1 10.0-121 4.30 40 2-Nitrophenol 0.792 ND 0.456 ND 57.5 49.8 1 12.0-120 14.6 39 4-Nitrophenol 0.792 ND 0.501 0.513 63.2 64.9 1 10.0-137 2.40 32 Pentachlorophenol 0.792 ND 0.538 0.449 67.9 56.9 1 10.0-160 18.0 31 Phenol 0.792 ND ND ND 44.0 43.4 1 12.0-120 1.76 38 2,4,6-Trichlorophenol 0.792 ND 0.464 0.424 58.6 53.7 1 19.0-120 9.03 32 (S) Nitrobenzene-d5 52.1 48.0 10.0-122 (S) 2-Fluorobiphenyl 51.2 51.1 15.0-120 (S) p-Terphenyl-d14 65.0 62.2 10.0-120 (S) Phenol-d5 49.8 47.5 10.0-120 (S) 2-Fluorophenol 51.7 49.4 12.0-120 (S) 2,4,6-Tribromophenol 64.1 55.8 10.0-127 1 Cp 2 Tc 3 Ss 4 Cn 5 Sr 6 Qc 7 Gl 8 Al 9 Sc ACCOUNT:PROJECT:SDG:DATE/TIME:PAGE: Tetra Tech Inc. - UT L1540992 10/17/22 15:01 56 of 64 ACCOUNT:PROJECT:SDG:DATE/TIME:PAGE: Tetra Tech Inc. - UT L1540992 10/17/22 15:23 56 of 64 QUALITY CONTROL SUMMARYWG1938242 Semi Volatile Organic Compounds (GC/MS) by Method 8270C L1540992-02 Method Blank (MB) (MB) R3846781-2 10/09/22 10:30 MB Result MB Qualifier MB MDL MB RDL Analyte mg/kg mg/kg mg/kg Acenaphthene U 0.00539 0.0333 Acenaphthylene U 0.00469 0.0333 Anthracene U 0.00593 0.0333 Benzidine U 0.0626 1.67 Benzo(a)anthracene U 0.00587 0.0333 Benzo(b)fluoranthene U 0.00621 0.0333 Benzo(k)fluoranthene U 0.00592 0.0333 Benzo(g,h,i)perylene U 0.00609 0.0333 Benzo(a)pyrene U 0.00619 0.0333 Bis(2-chlorethoxy)methane U 0.0100 0.333 Bis(2-chloroethyl)ether U 0.0110 0.333 2,2-Oxybis(1-Chloropropane) U 0.0144 0.333 4-Bromophenyl-phenylether U 0.0117 0.333 2-Chloronaphthalene U 0.00585 0.0333 4-Chlorophenyl-phenylether U 0.0116 0.333 Chrysene U 0.00662 0.0333 Dibenz(a,h)anthracene U 0.00923 0.0333 3,3-Dichlorobenzidine U 0.0123 0.333 2,4-Dinitrotoluene U 0.00955 0.333 2,6-Dinitrotoluene U 0.0109 0.333 Fluoranthene U 0.00601 0.0333 Fluorene U 0.00542 0.0333 Hexachlorobenzene U 0.0118 0.333 Hexachloro-1,3-butadiene U 0.0112 0.333 Hexachlorocyclopentadiene U 0.0175 0.333 Hexachloroethane U 0.0131 0.333 Indeno(1,2,3-cd)pyrene U 0.00941 0.0333 Isophorone U 0.0102 0.333 Naphthalene U 0.00836 0.0333 Nitrobenzene U 0.0116 0.333 n-Nitrosodimethylamine U 0.0494 0.333 n-Nitrosodiphenylamine U 0.0252 0.333 n-Nitrosodi-n-propylamine U 0.0111 0.333 Phenanthrene U 0.00661 0.0333 Benzylbutyl phthalate U 0.0104 0.333 Bis(2-ethylhexyl)phthalate U 0.0422 0.333 Di-n-butyl phthalate U 0.0114 0.333 Diethyl phthalate U 0.0110 0.333 Dimethyl phthalate U 0.0706 0.333 Di-n-octyl phthalate U 0.0225 0.333 1 Cp 2 Tc 3 Ss 4 Cn 5 Sr 6 Qc 7 Gl 8 Al 9 Sc ACCOUNT:PROJECT:SDG:DATE/TIME:PAGE: Tetra Tech Inc. - UT L1540992 10/17/22 15:01 57 of 64 ACCOUNT:PROJECT:SDG:DATE/TIME:PAGE: Tetra Tech Inc. - UT L1540992 10/17/22 15:23 57 of 64 QUALITY CONTROL SUMMARYWG1938242 Semi Volatile Organic Compounds (GC/MS) by Method 8270C L1540992-02 Method Blank (MB) (MB) R3846781-2 10/09/22 10:30 MB Result MB Qualifier MB MDL MB RDL Analyte mg/kg mg/kg mg/kg Pyrene U 0.00648 0.0333 1,2,4-Trichlorobenzene U 0.0104 0.333 4-Chloro-3-methylphenol U 0.0108 0.333 2-Chlorophenol U 0.0110 0.333 2,4-Dichlorophenol U 0.00970 0.333 2,4-Dimethylphenol U 0.00870 0.333 4,6-Dinitro-2-methylphenol U 0.0755 0.333 2,4-Dinitrophenol U 0.0779 0.333 2-Nitrophenol U 0.0119 0.333 4-Nitrophenol U 0.0104 0.333 Pentachlorophenol U 0.00896 0.333 Phenol U 0.0134 0.333 2,4,6-Trichlorophenol U 0.0107 0.333 (S) Nitrobenzene-d5 66.7 10.0-122 (S) 2-Fluorobiphenyl 69.7 15.0-120 (S) p-Terphenyl-d14 69.7 10.0-120 (S) Phenol-d5 62.5 10.0-120 (S) 2-Fluorophenol 71.8 12.0-120 (S) 2,4,6-Tribromophenol 72.8 10.0-127 Laboratory Control Sample (LCS) (LCS) R3846781-1 10/09/22 10:10 Spike Amount LCS Result LCS Rec. Rec. Limits LCS Qualifier Analyte mg/kg mg/kg %% Acenaphthene 0.666 0.468 70.3 38.0-120 Acenaphthylene 0.666 0.510 76.6 40.0-120 Anthracene 0.666 0.470 70.6 42.0-120 Benzidine 1.33 0.351 26.4 10.0-120 Benzo(a)anthracene 0.666 0.531 79.7 44.0-120 Benzo(b)fluoranthene 0.666 0.518 77.8 43.0-120 Benzo(k)fluoranthene 0.666 0.514 77.2 44.0-120 Benzo(g,h,i)perylene 0.666 0.551 82.7 43.0-120 Benzo(a)pyrene 0.666 0.543 81.5 45.0-120 Bis(2-chlorethoxy)methane 0.666 0.402 60.4 20.0-120 Bis(2-chloroethyl)ether 0.666 0.459 68.9 16.0-120 2,2-Oxybis(1-Chloropropane) 0.666 0.408 61.3 23.0-120 4-Bromophenyl-phenylether 0.666 0.603 90.5 40.0-120 2-Chloronaphthalene 0.666 0.486 73.0 35.0-120 1 Cp 2 Tc 3 Ss 4 Cn 5 Sr 6 Qc 7 Gl 8 Al 9 Sc ACCOUNT:PROJECT:SDG:DATE/TIME:PAGE: Tetra Tech Inc. - UT L1540992 10/17/22 15:01 58 of 64 ACCOUNT:PROJECT:SDG:DATE/TIME:PAGE: Tetra Tech Inc. - UT L1540992 10/17/22 15:23 58 of 64 QUALITY CONTROL SUMMARYWG1938242 Semi Volatile Organic Compounds (GC/MS) by Method 8270C L1540992-02 Laboratory Control Sample (LCS) (LCS) R3846781-1 10/09/22 10:10 Spike Amount LCS Result LCS Rec. Rec. Limits LCS Qualifier Analyte mg/kg mg/kg %% 4-Chlorophenyl-phenylether 0.666 0.571 85.7 40.0-120 Chrysene 0.666 0.484 72.7 43.0-120 Dibenz(a,h)anthracene 0.666 0.526 79.0 44.0-120 3,3-Dichlorobenzidine 1.33 0.890 66.9 28.0-120 2,4-Dinitrotoluene 0.666 0.584 87.7 45.0-120 2,6-Dinitrotoluene 0.666 0.544 81.7 42.0-120 Fluoranthene 0.666 0.538 80.8 44.0-120 Fluorene 0.666 0.527 79.1 41.0-120 Hexachlorobenzene 0.666 0.533 80.0 39.0-120 Hexachloro-1,3-butadiene 0.666 0.474 71.2 15.0-120 Hexachlorocyclopentadiene 0.666 0.459 68.9 15.0-120 Hexachloroethane 0.666 0.383 57.5 17.0-120 Indeno(1,2,3-cd)pyrene 0.666 0.527 79.1 45.0-120 Isophorone 0.666 0.411 61.7 23.0-120 Naphthalene 0.666 0.383 57.5 18.0-120 Nitrobenzene 0.666 0.376 56.5 17.0-120 n-Nitrosodimethylamine 0.666 0.341 51.2 10.0-125 n-Nitrosodiphenylamine 0.666 0.401 60.2 40.0-120 n-Nitrosodi-n-propylamine 0.666 0.479 71.9 26.0-120 Phenanthrene 0.666 0.480 72.1 42.0-120 Benzylbutyl phthalate 0.666 0.444 66.7 40.0-120 Bis(2-ethylhexyl)phthalate 0.666 0.435 65.3 41.0-120 Di-n-butyl phthalate 0.666 0.447 67.1 43.0-120 Diethyl phthalate 0.666 0.520 78.1 43.0-120 Dimethyl phthalate 0.666 0.552 82.9 43.0-120 Di-n-octyl phthalate 0.666 0.456 68.5 40.0-120 Pyrene 0.666 0.475 71.3 41.0-120 1,2,4-Trichlorobenzene 0.666 0.472 70.9 17.0-120 4-Chloro-3-methylphenol 0.666 0.416 62.5 28.0-120 2-Chlorophenol 0.666 0.438 65.8 28.0-120 2,4-Dichlorophenol 0.666 0.472 70.9 25.0-120 2,4-Dimethylphenol 0.666 0.382 57.4 15.0-120 4,6-Dinitro-2-methylphenol 0.666 0.473 71.0 16.0-120 2,4-Dinitrophenol 0.666 0.387 58.1 10.0-120 2-Nitrophenol 0.666 0.434 65.2 20.0-120 4-Nitrophenol 0.666 0.452 67.9 27.0-120 Pentachlorophenol 0.666 0.473 71.0 29.0-120 Phenol 0.666 0.449 67.4 28.0-120 2,4,6-Trichlorophenol 0.666 0.548 82.3 37.0-120 (S) Nitrobenzene-d5 61.0 10.0-122 1 Cp 2 Tc 3 Ss 4 Cn 5 Sr 6 Qc 7 Gl 8 Al 9 Sc ACCOUNT:PROJECT:SDG:DATE/TIME:PAGE: Tetra Tech Inc. - UT L1540992 10/17/22 15:01 59 of 64 ACCOUNT:PROJECT:SDG:DATE/TIME:PAGE: Tetra Tech Inc. - UT L1540992 10/17/22 15:23 59 of 64 QUALITY CONTROL SUMMARYWG1938242 Semi Volatile Organic Compounds (GC/MS) by Method 8270C L1540992-02 Laboratory Control Sample (LCS) (LCS) R3846781-1 10/09/22 10:10 Spike Amount LCS Result LCS Rec. Rec. Limits LCS Qualifier Analyte mg/kg mg/kg %% (S) 2-Fluorobiphenyl 74.2 15.0-120 (S) p-Terphenyl-d14 69.1 10.0-120 (S) Phenol-d5 65.8 10.0-120 (S) 2-Fluorophenol 72.8 12.0-120 (S) 2,4,6-Tribromophenol 93.8 10.0-127 L1540973-02 Original Sample (OS) • Matrix Spike (MS) • Matrix Spike Duplicate (MSD) (OS) L1540973-02 10/10/22 23:18 • (MS) R3846958-1 10/10/22 23:41 • (MSD) R3846958-2 10/11/22 00:05 Spike Amount (dry) Original Result (dry)MS Result (dry)MSD Result (dry)MS Rec. MSD Rec. Dilution Rec. Limits MS Qualifier MSD Qualifier RPD RPD Limits Analyte mg/kg mg/kg mg/kg mg/kg %%%%% Acenaphthene 0.778 ND 0.506 0.485 65.0 62.0 2 18.0-120 4.13 32 Acenaphthylene 0.778 ND 0.543 0.543 69.8 69.4 2 25.0-120 0.000 32 Anthracene 0.778 ND 0.507 0.480 65.2 61.4 2 22.0-120 5.37 29 Benzidine 1.55 ND ND ND 12.8 12.8 2 10.0-120 0.604 40 Benzo(a)anthracene 0.778 ND 0.550 0.543 70.7 69.4 2 25.0-120 1.32 29 Benzo(b)fluoranthene 0.778 ND 0.538 0.533 69.2 68.2 2 19.0-122 0.899 31 Benzo(k)fluoranthene 0.778 ND 0.524 0.506 67.3 64.6 2 23.0-120 3.51 30 Benzo(g,h,i)perylene 0.778 ND 0.521 0.500 67.0 63.8 2 10.0-120 4.25 33 Benzo(a)pyrene 0.778 ND 0.610 0.590 78.5 75.4 2 24.0-120 3.41 30 Bis(2-chlorethoxy)methane 0.778 ND ND ND 63.5 60.0 2 10.0-120 5.00 34 Bis(2-chloroethyl)ether 0.778 ND ND ND 74.6 68.9 2 10.0-120 7.31 40 2,2-Oxybis(1-Chloropropane) 0.778 ND ND ND 59.8 56.6 2 10.0-120 4.77 40 4-Bromophenyl-phenylether 0.778 ND ND ND 68.1 66.6 2 27.0-120 1.60 30 2-Chloronaphthalene 0.778 ND 0.503 0.480 64.7 61.4 2 20.0-120 4.65 32 4-Chlorophenyl-phenylether 0.778 ND ND ND 67.6 64.3 2 24.0-120 4.44 29 Chrysene 0.778 ND 0.545 0.527 70.1 67.4 2 21.0-120 3.37 29 Dibenz(a,h)anthracene 0.778 ND 0.524 0.508 67.3 64.9 2 10.0-120 3.03 32 3,3-Dichlorobenzidine 1.55 ND ND ND 8.29 7.85 2 10.0-120 J6 J6 4.78 34 2,4-Dinitrotoluene 0.778 ND ND ND 73.7 70.9 2 30.0-120 3.20 31 2,6-Dinitrotoluene 0.778 ND ND ND 73.2 72.0 2 25.0-120 1.06 31 Fluoranthene 0.778 ND 0.551 0.538 70.9 68.8 2 18.0-126 2.43 32 Fluorene 0.778 ND 0.538 0.526 69.2 67.2 2 25.0-120 2.26 30 Hexachlorobenzene 0.778 ND ND ND 61.1 60.0 2 27.0-120 1.27 28 Hexachloro-1,3-butadiene 0.778 ND ND ND 56.3 52.5 2 10.0-120 6.52 38 Hexachlorocyclopentadiene 0.778 ND ND ND 0.000 5.80 2 10.0-120 J6 J6 200 40 Hexachloroethane 0.778 ND ND ND 41.5 34.3 2 10.0-120 18.3 40 Indeno(1,2,3-cd)pyrene 0.778 ND 0.550 0.533 70.7 68.2 2 10.0-120 3.11 32 Isophorone 0.778 ND ND ND 59.8 56.2 2 13.0-120 5.59 34 1 Cp 2 Tc 3 Ss 4 Cn 5 Sr 6 Qc 7 Gl 8 Al 9 Sc ACCOUNT:PROJECT:SDG:DATE/TIME:PAGE: Tetra Tech Inc. - UT L1540992 10/17/22 15:01 60 of 64 ACCOUNT:PROJECT:SDG:DATE/TIME:PAGE: Tetra Tech Inc. - UT L1540992 10/17/22 15:23 60 of 64 QUALITY CONTROL SUMMARYWG1938242 Semi Volatile Organic Compounds (GC/MS) by Method 8270C L1540992-02 L1540973-02 Original Sample (OS) • Matrix Spike (MS) • Matrix Spike Duplicate (MSD) (OS) L1540973-02 10/10/22 23:18 • (MS) R3846958-1 10/10/22 23:41 • (MSD) R3846958-2 10/11/22 00:05 Spike Amount (dry) Original Result (dry)MS Result (dry)MSD Result (dry)MS Rec. MSD Rec. Dilution Rec. Limits MS Qualifier MSD Qualifier RPD RPD Limits Analyte mg/kg mg/kg mg/kg mg/kg %%%%% Naphthalene 0.778 ND 0.471 0.451 60.5 57.7 2 10.0-120 4.18 35 Nitrobenzene 0.778 ND ND ND 60.2 56.0 2 10.0-120 6.64 36 n-Nitrosodimethylamine 0.778 ND ND ND 60.2 56.8 2 10.0-127 5.28 40 n-Nitrosodiphenylamine 0.778 ND ND ND 60.2 61.4 2 17.0-120 2.54 29 n-Nitrosodi-n-propylamine 0.778 ND ND ND 60.7 57.5 2 10.0-120 4.70 37 Phenanthrene 0.778 ND 0.540 0.515 69.5 65.8 2 17.0-120 4.79 31 Benzylbutyl phthalate 0.778 ND ND ND 90.4 83.7 2 23.0-120 7.09 30 Bis(2-ethylhexyl)phthalate 0.778 ND ND ND 58.0 56.0 2 17.0-126 1.84 30 Di-n-butyl phthalate 0.778 ND ND ND 78.0 75.7 2 30.0-120 2.41 29 Diethyl phthalate 0.778 ND ND ND 69.3 67.7 2 26.0-120 1.80 28 Dimethyl phthalate 0.778 ND ND ND 69.5 68.2 2 25.0-120 1.35 29 Di-n-octyl phthalate 0.778 ND ND ND 89.2 86.5 2 21.0-123 2.46 29 Pyrene 0.778 ND 0.530 0.510 68.1 65.2 2 16.0-121 3.70 32 1,2,4-Trichlorobenzene 0.778 ND ND ND 60.2 55.7 2 12.0-120 7.19 37 4-Chloro-3-methylphenol 0.778 ND ND ND 70.0 69.4 2 15.0-120 0.221 30 2-Chlorophenol 0.778 ND ND ND 66.6 63.5 2 15.0-120 4.03 37 2,4-Dichlorophenol 0.778 ND ND ND 70.1 66.6 2 20.0-120 4.51 31 2,4-Dimethylphenol 0.778 ND ND ND 65.5 62.2 2 10.0-120 4.59 33 4,6-Dinitro-2-methylphenol 0.778 ND ND ND 61.9 49.1 2 10.0-120 22.5 39 2,4-Dinitrophenol 0.778 ND ND ND 55.1 46.0 2 10.0-121 17.4 40 2-Nitrophenol 0.778 ND ND ND 75.4 69.5 2 12.0-120 7.45 39 4-Nitrophenol 0.778 ND ND ND 83.4 80.2 2 10.0-137 3.40 32 Pentachlorophenol 0.778 ND ND ND 70.4 68.8 2 10.0-160 1.77 31 Phenol 0.778 ND ND ND 67.8 63.5 2 12.0-120 5.88 38 2,4,6-Trichlorophenol 0.778 ND ND ND 70.1 69.7 2 19.0-120 0.000 32 (S) Nitrobenzene-d5 59.4 54.8 10.0-122 (S) 2-Fluorobiphenyl 60.1 55.4 15.0-120 (S) p-Terphenyl-d14 54.2 57.5 10.0-120 (S) Phenol-d5 66.3 60.9 10.0-120 (S) 2-Fluorophenol 71.4 64.5 12.0-120 (S) 2,4,6-Tribromophenol 66.9 64.0 10.0-127 1 Cp 2 Tc 3 Ss 4 Cn 5 Sr 6 Qc 7 Gl 8 Al 9 Sc ACCOUNT:PROJECT:SDG:DATE/TIME:PAGE: Tetra Tech Inc. - UT L1540992 10/17/22 15:01 61 of 64 ACCOUNT:PROJECT:SDG:DATE/TIME:PAGE: Tetra Tech Inc. - UT L1540992 10/17/22 15:23 61 of 64 GLOSSARY OF TERMS Guide to Reading and Understanding Your Laboratory Report The information below is designed to better explain the various terms used in your report of analytical results from the Laboratory. This is not intended as a comprehensive explanation, and if you have additional questions please contact your project representative. Results Disclaimer - Information that may be provided by the customer, and contained within this report, include Permit Limits, Project Name, Sample ID, Sample Matrix, Sample Preservation, Field Blanks, Field Spikes, Field Duplicates, On-Site Data, Sampling Collection Dates/Times, and Sampling Location. Results relate to the accuracy of this information provided, and as the samples are received. Abbreviations and Definitions (dry)Results are reported based on the dry weight of the sample. [this will only be present on a dry report basis for soils]. MDL Method Detection Limit. ND Not detected at the Reporting Limit (or MDL where applicable). RDL Reported Detection Limit. RDL (dry)Reported Detection Limit. Rec.Recovery. RPD Relative Percent Difference. SDG Sample Delivery Group. (S) Surrogate (Surrogate Standard) - Analytes added to every blank, sample, Laboratory Control Sample/Duplicate and Matrix Spike/Duplicate; used to evaluate analytical efficiency by measuring recovery. Surrogates are not expected to be detected in all environmental media. U Not detected at the Reporting Limit (or MDL where applicable). Analyte The name of the particular compound or analysis performed. Some Analyses and Methods will have multiple analytes reported. Dilution If the sample matrix contains an interfering material, the sample preparation volume or weight values differ from the standard, or if concentrations of analytes in the sample are higher than the highest limit of concentration that the laboratory can accurately report, the sample may be diluted for analysis. If a value different than 1 is used in this field, the result reported has already been corrected for this factor. Limits These are the target % recovery ranges or % difference value that the laboratory has historically determined as normal for the method and analyte being reported. Successful QC Sample analysis will target all analytes recovered or duplicated within these ranges. Original Sample The non-spiked sample in the prep batch used to determine the Relative Percent Difference (RPD) from a quality control sample. The Original Sample may not be included within the reported SDG. Qualifier This column provides a letter and/or number designation that corresponds to additional information concerning the result reported. If a Qualifier is present, a definition per Qualifier is provided within the Glossary and Definitions page and potentially a discussion of possible implications of the Qualifier in the Case Narrative if applicable. Result The actual analytical final result (corrected for any sample specific characteristics) reported for your sample. If there was no measurable result returned for a specific analyte, the result in this column may state “ND” (Not Detected) or “BDL” (Below Detectable Levels). The information in the results column should always be accompanied by either an MDL (Method Detection Limit) or RDL (Reporting Detection Limit) that defines the lowest value that the laboratory could detect or report for this analyte. Uncertainty (Radiochemistry)Confidence level of 2 sigma. Case Narrative (Cn) A brief discussion about the included sample results, including a discussion of any non-conformances to protocol observed either at sample receipt by the laboratory from the field or during the analytical process. If present, there will be a section in the Case Narrative to discuss the meaning of any data qualifiers used in the report. Quality Control Summary (Qc) This section of the report includes the results of the laboratory quality control analyses required by procedure or analytical methods to assist in evaluating the validity of the results reported for your samples. These analyses are not being performed on your samples typically, but on laboratory generated material. Sample Chain of Custody (Sc) This is the document created in the field when your samples were initially collected. This is used to verify the time and date of collection, the person collecting the samples, and the analyses that the laboratory is requested to perform. This chain of custody also documents all persons (excluding commercial shippers) that have had control or possession of the samples from the time of collection until delivery to the laboratory for analysis. Sample Results (Sr) This section of your report will provide the results of all testing performed on your samples. These results are provided by sample ID and are separated by the analyses performed on each sample. The header line of each analysis section for each sample will provide the name and method number for the analysis reported. Sample Summary (Ss)This section of the Analytical Report defines the specific analyses performed for each sample ID, including the dates and times of preparation and/or analysis. Qualifier Description B The same analyte is found in the associated blank. J The identification of the analyte is acceptable; the reported value is an estimate. J2 Surrogate recovery limits have been exceeded; values are outside lower control limits. J3 The associated batch QC was outside the established quality control range for precision. J4 The associated batch QC was outside the established quality control range for accuracy. J5 The sample matrix interfered with the ability to make any accurate determination; spike value is high. J6 The sample matrix interfered with the ability to make any accurate determination; spike value is low. J7 Surrogate recovery cannot be used for control limit evaluation due to dilution. V The sample concentration is too high to evaluate accurate spike recoveries. 1 Cp 2 Tc 3 Ss 4 Cn 5 Sr 6 Qc 7 Gl 8 Al 9 Sc ACCOUNT:PROJECT:SDG:DATE/TIME:PAGE: Tetra Tech Inc. - UT L1540992 10/17/22 15:01 62 of 64 ACCOUNT:PROJECT:SDG:DATE/TIME:PAGE: Tetra Tech Inc. - UT L1540992 10/17/22 15:23 62 of 64 Pace Analytical National 12065 Lebanon Rd Mount Juliet, TN 37122 Alabama 40660 Nebraska NE-OS-15-05 Alaska 17-026 Nevada TN000032021-1 Arizona AZ0612 New Hampshire 2975 Arkansas 88-0469 New Jersey–NELAP TN002 California 2932 New Mexico ¹TN00003 Colorado TN00003 New York 11742 Connecticut PH-0197 North Carolina Env375 Florida E87487 North Carolina ¹DW21704 Georgia NELAP North Carolina ³41 Georgia ¹923 North Dakota R-140 Idaho TN00003 Ohio–VAP CL0069 Illinois 200008 Oklahoma 9915 Indiana C-TN-01 Oregon TN200002 Iowa 364 Pennsylvania 68-02979 Kansas E-10277 Rhode Island LAO00356 Kentucky ¹ ⁶KY90010 South Carolina 84004002 Kentucky ²16 South Dakota n/a Louisiana AI30792 Tennessee ¹ ⁴2006 Louisiana LA018 Texas T104704245-20-18 Maine TN00003 Texas ⁵LAB0152 Maryland 324 Utah TN000032021-11 Massachusetts M-TN003 Vermont VT2006 Michigan 9958 Virginia 110033 Minnesota 047-999-395 Washington C847 Mississippi TN00003 West Virginia 233 Missouri 340 Wisconsin 998093910 Montana CERT0086 Wyoming A2LA A2LA – ISO 17025 1461.01 AIHA-LAP,LLC EMLAP 100789 A2LA – ISO 17025 ⁵1461.02 DOD 1461.01 Canada 1461.01 USDA P330-15-00234 EPA–Crypto TN00003 ACCREDITATIONS & LOCATIONS ¹ Drinking Water ² Underground Storage Tanks ³ Aquatic Toxicity ⁴ Chemical/Microbiological ⁵ Mold ⁶ Wastewater n/a Accreditation not applicable * Not all certifications held by the laboratory are applicable to the results reported in the attached report. * Accreditation is only applicable to the test methods specified on each scope of accreditation held by Pace Analytical. 1 Cp 2 Tc 3 Ss 4 Cn 5 Sr 6 Qc 7 Gl 8 Al 9 Sc ACCOUNT:PROJECT:SDG:DATE/TIME:PAGE: Tetra Tech Inc. - UT L1540992 10/17/22 15:01 63 of 64 ACCOUNT:PROJECT:SDG:DATE/TIME:PAGE: Tetra Tech Inc. - UT L1540992 10/17/22 15:23 63 of 64 ANALYTICAL REPORT October 22, 2022 Tetra Tech Inc. - UT Sample Delivery Group:L1540996 Samples Received:09/29/2022 Project Number: Description:Dentons Support - Ogden,Utah Site Site:RECYCLED EARTH Report To:Anna Rasmuson 4750 West 2100 South Suite 400 Salt Lake City, UT 84120 Entire Report Reviewed By: October 22, 2022 [Preliminary Report] Chris Ward Project Manager Results relate only to the items tested or calibrated and are reported as rounded values. This test report shall not be reproduced, except in full, without written approval of the laboratory. Where applicable, sampling conducted by Pace Analytical National is performed per guidance provided in laboratory standard operating procedures ENV-SOP-MTJL-0067 and ENV-SOP-MTJL-0068. Where sampling conducted by the customer, results relate to the accuracy of the information provided, and as the samples are received. Pace Analytical National 12065 Lebanon Rd Mount Juliet, TN 37122 615-758-5858 800-767-5859 www.pacenational.com 1 Cp 2 Tc 3 Ss 4 Cn 5 Sr 6 Qc 7 Gl 8 Al 9 Sc ACCOUNT:PROJECT:SDG:DATE/TIME:PAGE: Tetra Tech Inc. - UT L1540996 10/22/22 11:13 1 of 42 October 24, 2022 Chris Ward Project Manager ACCOUNT:PROJECT:SDG:DATE/TIME:PAGE: Tetra Tech Inc. - UT L1540996 10/24/22 14:09 1 of 42 TABLE OF CONTENTS Cp: Cover Page 1 Tc: Table of Contents 2 Ss: Sample Summary 3 Cn: Case Narrative 4 Sr: Sample Results 5 CONE-SS L1540996-01 5 POND-SS L1540996-02 9 CONF-SS L1540996-03 13 Qc: Quality Control Summary 17 Total Solids by Method 2540 G-2011 17 Mercury by Method 7471A 19 Metals (ICP) by Method 6010B 20 Volatile Organic Compounds (GC) by Method 8015D/GRO 24 Volatile Organic Compounds (GC/MS) by Method 8260B 25 Semi-Volatile Organic Compounds (GC) by Method 8015 33 Semi Volatile Organic Compounds (GC/MS) by Method 8270C 35 Gl: Glossary of Terms 40 Al: Accreditations & Locations 41 Sc: Sample Chain of Custody 42 1 Cp 2 Tc 3 Ss 4 Cn 5 Sr 6 Qc 7 Gl 8 Al 9 Sc ACCOUNT:PROJECT:SDG:DATE/TIME:PAGE: Tetra Tech Inc. - UT L1540996 10/22/22 11:13 2 of 42 ACCOUNT:PROJECT:SDG:DATE/TIME:PAGE: Tetra Tech Inc. - UT L1540996 10/24/22 14:09 2 of 42 SAMPLE SUMMARY Collected by Collected date/time Received date/time CONE-SS L1540996-01 Solid Anna Rasmuson 09/27/22 16:39 09/29/22 13:00 Method Batch Dilution Preparation Analysis Analyst Location date/time date/time Total Solids by Method 2540 G-2011 WG1935129 1 10/01/22 13:21 10/01/22 13:36 CMK Mt. Juliet, TN Mercury by Method 7471A WG1936004 1 10/05/22 12:40 10/06/22 14:09 SRT Mt. Juliet, TN Metals (ICP) by Method 6010B WG1937016 1 10/17/22 09:18 10/17/22 21:11 CCE Mt. Juliet, TN Metals (ICP) by Method 6010B WG1937016 5 10/17/22 09:18 10/21/22 15:28 CCE Mt. Juliet, TN Volatile Organic Compounds (GC) by Method 8015D/GRO WG1936665 1 10/03/22 11:24 10/04/22 07:46 DWR Mt. Juliet, TN Volatile Organic Compounds (GC/MS) by Method 8260B WG1936759 1 10/03/22 11:24 10/04/22 14:33 JAH Mt. Juliet, TN Semi-Volatile Organic Compounds (GC) by Method 8015 WG1938249 5 10/07/22 07:24 10/07/22 15:40 JAS Mt. Juliet, TN Semi Volatile Organic Compounds (GC/MS) by Method 8270C WG1938242 1 10/07/22 22:37 10/09/22 12:52 JNJ Mt. Juliet, TN Collected by Collected date/time Received date/time POND-SS L1540996-02 Solid Anna Rasmuson 09/27/22 16:57 09/29/22 13:00 Method Batch Dilution Preparation Analysis Analyst Location date/time date/time Total Solids by Method 2540 G-2011 WG1935129 1 10/01/22 13:21 10/01/22 13:36 CMK Mt. Juliet, TN Mercury by Method 7471A WG1936004 1 10/05/22 12:40 10/06/22 14:12 SRT Mt. Juliet, TN Metals (ICP) by Method 6010B WG1937016 1 10/17/22 09:18 10/17/22 21:15 CCE Mt. Juliet, TN Volatile Organic Compounds (GC) by Method 8015D/GRO WG1936665 1 10/03/22 11:24 10/04/22 08:08 DWR Mt. Juliet, TN Volatile Organic Compounds (GC/MS) by Method 8260B WG1936772 1 10/03/22 11:24 10/04/22 09:22 DWR Mt. Juliet, TN Semi-Volatile Organic Compounds (GC) by Method 8015 WG1938298 10 10/07/22 07:56 10/07/22 18:19 JAS Mt. Juliet, TN Semi Volatile Organic Compounds (GC/MS) by Method 8270C WG1938242 2 10/07/22 22:37 10/09/22 13:32 JNJ Mt. Juliet, TN Collected by Collected date/time Received date/time CONF-SS L1540996-03 Solid Anna Rasmuson 09/27/22 17:21 09/29/22 13:00 Method Batch Dilution Preparation Analysis Analyst Location date/time date/time Total Solids by Method 2540 G-2011 WG1935131 1 10/01/22 12:55 10/01/22 13:18 CMK Mt. Juliet, TN Mercury by Method 7471A WG1936004 1 10/05/22 12:40 10/06/22 14:19 SRT Mt. Juliet, TN Metals (ICP) by Method 6010B WG1937018 1 10/11/22 17:38 10/13/22 23:18 CCE Mt. Juliet, TN Volatile Organic Compounds (GC) by Method 8015D/GRO WG1936665 1 10/03/22 11:24 10/04/22 08:31 DWR Mt. Juliet, TN Volatile Organic Compounds (GC/MS) by Method 8260B WG1936772 1 10/03/22 11:24 10/04/22 09:40 DWR Mt. Juliet, TN Semi-Volatile Organic Compounds (GC) by Method 8015 WG1938298 20 10/07/22 07:56 10/07/22 18:45 JAS Mt. Juliet, TN Semi Volatile Organic Compounds (GC/MS) by Method 8270C WG1938242 10 10/07/22 22:37 10/09/22 16:56 JNJ Mt. Juliet, TN 1 Cp 2 Tc 3 Ss 4 Cn 5 Sr 6 Qc 7 Gl 8 Al 9 Sc ACCOUNT:PROJECT:SDG:DATE/TIME:PAGE: Tetra Tech Inc. - UT L1540996 10/22/22 11:13 3 of 42 ACCOUNT:PROJECT:SDG:DATE/TIME:PAGE: Tetra Tech Inc. - UT L1540996 10/24/22 14:09 3 of 42 CASE NARRATIVE All sample aliquots were received at the correct temperature, in the proper containers, with the appropriate preservatives, and within method specified holding times, unless qualified or notated within the report. Where applicable, all MDL (LOD) and RDL (LOQ) values reported for environmental samples have been corrected for the dilution factor used in the analysis. All Method and Batch Quality Control are within established criteria except where addressed in this case narrative, a non-conformance form or properly qualified within the sample results. By my digital signature below, I affirm to the best of my knowledge, all problems/anomalies observed by the laboratory as having the potential to affect the quality of the data have been identified by the laboratory, and no information or data have been knowingly withheld that would affect the quality of the data. [Preliminary Report] Chris Ward Project Manager 1 Cp 2 Tc 3 Ss 4 Cn 5 Sr 6 Qc 7 Gl 8 Al 9 Sc ACCOUNT:PROJECT:SDG:DATE/TIME:PAGE: Tetra Tech Inc. - UT L1540996 10/22/22 11:13 4 of 42 Chris Ward Project Manager ACCOUNT:PROJECT:SDG:DATE/TIME:PAGE: Tetra Tech Inc. - UT L1540996 10/24/22 14:09 4 of 42 SAMPLE RESULTS - 01 L1540996 CONE-SS Collected date/time: 09/27/22 16:39 Total Solids by Method 2540 G-2011 Result Qualifier Dilution Analysis Batch Analyte %date / time Total Solids 98.5 1 10/01/2022 13:36 WG1935129 Mercury by Method 7471A Result (dry) Qualifier RDL (dry) Dilution Analysis Batch Analyte mg/kg mg/kg date / time Mercury ND 0.0406 1 10/06/2022 14:09 WG1936004 Metals (ICP) by Method 6010B Result (dry) Qualifier RDL (dry) Dilution Analysis Batch Analyte mg/kg mg/kg date / time Antimony 3.75 2.03 1 10/17/2022 21:11 WG1937016 Arsenic 6.54 2.03 1 10/17/2022 21:11 WG1937016 Beryllium 0.437 0.203 1 10/17/2022 21:11 WG1937016 Cadmium ND 2.54 5 10/21/2022 15:28 WG1937016 Chromium 171 1.01 1 10/17/2022 21:11 WG1937016 Copper 232 2.03 1 10/17/2022 21:11 WG1937016 Lead 15.9 0.507 1 10/17/2022 21:11 WG1937016 Nickel 78.3 2.03 1 10/17/2022 21:11 WG1937016 Selenium ND 2.03 1 10/17/2022 21:11 WG1937016 Silver ND 1.01 1 10/17/2022 21:11 WG1937016 Thallium ND 2.03 1 10/17/2022 21:11 WG1937016 Zinc 59.7 5.07 1 10/17/2022 21:11 WG1937016 Volatile Organic Compounds (GC) by Method 8015D/GRO Result (dry) Qualifier RDL (dry) Dilution Analysis Batch Analyte mg/kg mg/kg date / time TPH (GC/FID) Low Fraction 1.32 0.101 1 10/04/2022 07:46 WG1936665 (S) a,a,a-Trifluorotoluene(FID) 93.1 77.0-120 10/04/2022 07:46 WG1936665 Volatile Organic Compounds (GC/MS) by Method 8260B Result (dry) Qualifier RDL (dry) Dilution Analysis Batch Analyte mg/kg mg/kg date / time Acetone ND J4 0.0515 1 10/04/2022 14:33 WG1936759 Acrylonitrile ND 0.0129 1 10/04/2022 14:33 WG1936759 Benzene ND 0.00103 1 10/04/2022 14:33 WG1936759 Bromobenzene ND 0.0129 1 10/04/2022 14:33 WG1936759 Bromodichloromethane ND 0.00257 1 10/04/2022 14:33 WG1936759 Bromoform ND 0.0257 1 10/04/2022 14:33 WG1936759 Bromomethane ND 0.0129 1 10/04/2022 14:33 WG1936759 n-Butylbenzene ND 0.0129 1 10/04/2022 14:33 WG1936759 sec-Butylbenzene ND 0.0129 1 10/04/2022 14:33 WG1936759 tert-Butylbenzene ND 0.00515 1 10/04/2022 14:33 WG1936759 Carbon tetrachloride ND 0.00515 1 10/04/2022 14:33 WG1936759 Chlorobenzene ND 0.00257 1 10/04/2022 14:33 WG1936759 Chlorodibromomethane ND 0.00257 1 10/04/2022 14:33 WG1936759 Chloroethane ND 0.00515 1 10/04/2022 14:33 WG1936759 Chloroform ND 0.00257 1 10/04/2022 14:33 WG1936759 Chloromethane ND 0.0129 1 10/04/2022 14:33 WG1936759 2-Chlorotoluene ND 0.00257 1 10/04/2022 14:33 WG1936759 4-Chlorotoluene ND 0.00515 1 10/04/2022 14:33 WG1936759 1,2-Dibromo-3-Chloropropane ND 0.0257 1 10/04/2022 14:33 WG1936759 1,2-Dibromoethane ND 0.00257 1 10/04/2022 14:33 WG1936759 Dibromomethane ND 0.00515 1 10/04/2022 14:33 WG1936759 1,2-Dichlorobenzene ND 0.00515 1 10/04/2022 14:33 WG1936759 1 Cp 2 Tc 3 Ss 4 Cn 5 Sr 6 Qc 7 Gl 8 Al 9 Sc ACCOUNT:PROJECT:SDG:DATE/TIME:PAGE: Tetra Tech Inc. - UT L1540996 10/22/22 11:13 5 of 42 ACCOUNT:PROJECT:SDG:DATE/TIME:PAGE: Tetra Tech Inc. - UT L1540996 10/24/22 14:09 5 of 42 SAMPLE RESULTS - 01 L1540996 CONE-SS Collected date/time: 09/27/22 16:39 Volatile Organic Compounds (GC/MS) by Method 8260B Result (dry) Qualifier RDL (dry) Dilution Analysis Batch Analyte mg/kg mg/kg date / time 1,3-Dichlorobenzene ND 0.00515 1 10/04/2022 14:33 WG1936759 1,4-Dichlorobenzene ND 0.00515 1 10/04/2022 14:33 WG1936759 Dichlorodifluoromethane ND 0.00257 1 10/04/2022 14:33 WG1936759 1,1-Dichloroethane ND 0.00257 1 10/04/2022 14:33 WG1936759 1,2-Dichloroethane ND 0.00257 1 10/04/2022 14:33 WG1936759 1,1-Dichloroethene ND 0.00257 1 10/04/2022 14:33 WG1936759 cis-1,2-Dichloroethene ND 0.00257 1 10/04/2022 14:33 WG1936759 trans-1,2-Dichloroethene ND 0.00515 1 10/04/2022 14:33 WG1936759 1,2-Dichloropropane ND 0.00515 1 10/04/2022 14:33 WG1936759 1,1-Dichloropropene ND 0.00257 1 10/04/2022 14:33 WG1936759 1,3-Dichloropropane ND 0.00515 1 10/04/2022 14:33 WG1936759 cis-1,3-Dichloropropene ND 0.00257 1 10/04/2022 14:33 WG1936759 trans-1,3-Dichloropropene ND 0.00515 1 10/04/2022 14:33 WG1936759 2,2-Dichloropropane ND 0.00257 1 10/04/2022 14:33 WG1936759 Di-isopropyl ether ND 0.00103 1 10/04/2022 14:33 WG1936759 Ethylbenzene ND 0.00257 1 10/04/2022 14:33 WG1936759 Hexachloro-1,3-butadiene ND 0.0257 1 10/04/2022 14:33 WG1936759 Isopropylbenzene ND 0.00257 1 10/04/2022 14:33 WG1936759 p-Isopropyltoluene ND 0.00515 1 10/04/2022 14:33 WG1936759 2-Butanone (MEK)ND 0.103 1 10/04/2022 14:33 WG1936759 Methylene Chloride ND 0.0257 1 10/04/2022 14:33 WG1936759 4-Methyl-2-pentanone (MIBK) ND 0.0257 1 10/04/2022 14:33 WG1936759 Methyl tert-butyl ether ND 0.00103 1 10/04/2022 14:33 WG1936759 Naphthalene ND J4 0.0129 1 10/04/2022 14:33 WG1936759 n-Propylbenzene ND 0.00515 1 10/04/2022 14:33 WG1936759 Styrene ND 0.0129 1 10/04/2022 14:33 WG1936759 1,1,1,2-Tetrachloroethane ND 0.00257 1 10/04/2022 14:33 WG1936759 1,1,2,2-Tetrachloroethane ND 0.00257 1 10/04/2022 14:33 WG1936759 1,1,2-Trichlorotrifluoroethane ND 0.00257 1 10/04/2022 14:33 WG1936759 Tetrachloroethene ND 0.00257 1 10/04/2022 14:33 WG1936759 Toluene ND 0.00515 1 10/04/2022 14:33 WG1936759 1,2,3-Trichlorobenzene ND 0.0129 1 10/04/2022 14:33 WG1936759 1,2,4-Trichlorobenzene ND 0.0129 1 10/04/2022 14:33 WG1936759 1,1,1-Trichloroethane ND 0.00257 1 10/04/2022 14:33 WG1936759 1,1,2-Trichloroethane ND 0.00257 1 10/04/2022 14:33 WG1936759 Trichloroethene ND J4 0.00103 1 10/04/2022 14:33 WG1936759 Trichlorofluoromethane ND 0.00257 1 10/04/2022 14:33 WG1936759 1,2,3-Trichloropropane ND 0.0129 1 10/04/2022 14:33 WG1936759 1,2,4-Trimethylbenzene ND 0.00515 1 10/04/2022 14:33 WG1936759 1,2,3-Trimethylbenzene ND 0.00515 1 10/04/2022 14:33 WG1936759 1,3,5-Trimethylbenzene ND 0.00515 1 10/04/2022 14:33 WG1936759 Vinyl chloride ND 0.00257 1 10/04/2022 14:33 WG1936759 Xylenes, Total ND 0.00669 1 10/04/2022 14:33 WG1936759 (S) Toluene-d8 103 75.0-131 10/04/2022 14:33 WG1936759 (S) 4-Bromofluorobenzene 103 67.0-138 10/04/2022 14:33 WG1936759 (S) 1,2-Dichloroethane-d4 91.2 70.0-130 10/04/2022 14:33 WG1936759 Semi-Volatile Organic Compounds (GC) by Method 8015 Result (dry) Qualifier RDL (dry) Dilution Analysis Batch Analyte mg/kg mg/kg date / time C10-C28 Diesel Range 20.7 20.3 5 10/07/2022 15:40 WG1938249 C28-C40 Oil Range 118 20.3 5 10/07/2022 15:40 WG1938249 (S) o-Terphenyl 57.1 18.0-148 10/07/2022 15:40 WG1938249 1 Cp 2 Tc 3 Ss 4 Cn 5 Sr 6 Qc 7 Gl 8 Al 9 Sc ACCOUNT:PROJECT:SDG:DATE/TIME:PAGE: Tetra Tech Inc. - UT L1540996 10/22/22 11:13 6 of 42 ACCOUNT:PROJECT:SDG:DATE/TIME:PAGE: Tetra Tech Inc. - UT L1540996 10/24/22 14:09 6 of 42 SAMPLE RESULTS - 01 L1540996 CONE-SS Collected date/time: 09/27/22 16:39 Semi Volatile Organic Compounds (GC/MS) by Method 8270C Result (dry) Qualifier RDL (dry) Dilution Analysis Batch Analyte mg/kg mg/kg date / time Acenaphthene ND 0.0338 1 10/09/2022 12:52 WG1938242 Acenaphthylene ND 0.0338 1 10/09/2022 12:52 WG1938242 Anthracene ND 0.0338 1 10/09/2022 12:52 WG1938242 Benzidine ND 1.69 1 10/09/2022 12:52 WG1938242 Benzo(a)anthracene ND 0.0338 1 10/09/2022 12:52 WG1938242 Benzo(b)fluoranthene ND 0.0338 1 10/09/2022 12:52 WG1938242 Benzo(k)fluoranthene ND 0.0338 1 10/09/2022 12:52 WG1938242 Benzo(g,h,i)perylene ND 0.0338 1 10/09/2022 12:52 WG1938242 Benzo(a)pyrene ND 0.0338 1 10/09/2022 12:52 WG1938242 Bis(2-chlorethoxy)methane ND 0.338 1 10/09/2022 12:52 WG1938242 Bis(2-chloroethyl)ether ND 0.338 1 10/09/2022 12:52 WG1938242 2,2-Oxybis(1-Chloropropane) ND 0.338 1 10/09/2022 12:52 WG1938242 4-Bromophenyl-phenylether ND 0.338 1 10/09/2022 12:52 WG1938242 2-Chloronaphthalene ND 0.0338 1 10/09/2022 12:52 WG1938242 4-Chlorophenyl-phenylether ND 0.338 1 10/09/2022 12:52 WG1938242 Chrysene ND 0.0338 1 10/09/2022 12:52 WG1938242 Dibenz(a,h)anthracene ND 0.0338 1 10/09/2022 12:52 WG1938242 3,3-Dichlorobenzidine ND 0.338 1 10/09/2022 12:52 WG1938242 2,4-Dinitrotoluene ND 0.338 1 10/09/2022 12:52 WG1938242 2,6-Dinitrotoluene ND 0.338 1 10/09/2022 12:52 WG1938242 Fluoranthene ND 0.0338 1 10/09/2022 12:52 WG1938242 Fluorene ND 0.0338 1 10/09/2022 12:52 WG1938242 Hexachlorobenzene ND 0.338 1 10/09/2022 12:52 WG1938242 Hexachloro-1,3-butadiene ND 0.338 1 10/09/2022 12:52 WG1938242 Hexachlorocyclopentadiene ND 0.338 1 10/09/2022 12:52 WG1938242 Hexachloroethane ND 0.338 1 10/09/2022 12:52 WG1938242 Indeno(1,2,3-cd)pyrene ND 0.0338 1 10/09/2022 12:52 WG1938242 Isophorone ND 0.338 1 10/09/2022 12:52 WG1938242 Naphthalene ND 0.0338 1 10/09/2022 12:52 WG1938242 Nitrobenzene ND 0.338 1 10/09/2022 12:52 WG1938242 n-Nitrosodimethylamine ND 0.338 1 10/09/2022 12:52 WG1938242 n-Nitrosodiphenylamine ND 0.338 1 10/09/2022 12:52 WG1938242 n-Nitrosodi-n-propylamine ND 0.338 1 10/09/2022 12:52 WG1938242 Phenanthrene ND 0.0338 1 10/09/2022 12:52 WG1938242 Benzylbutyl phthalate ND 0.338 1 10/09/2022 12:52 WG1938242 Bis(2-ethylhexyl)phthalate ND 0.338 1 10/09/2022 12:52 WG1938242 Di-n-butyl phthalate ND 0.338 1 10/09/2022 12:52 WG1938242 Diethyl phthalate ND 0.338 1 10/09/2022 12:52 WG1938242 Dimethyl phthalate ND 0.338 1 10/09/2022 12:52 WG1938242 Di-n-octyl phthalate ND 0.338 1 10/09/2022 12:52 WG1938242 Pyrene ND 0.0338 1 10/09/2022 12:52 WG1938242 1,2,4-Trichlorobenzene ND 0.338 1 10/09/2022 12:52 WG1938242 4-Chloro-3-methylphenol ND 0.338 1 10/09/2022 12:52 WG1938242 2-Chlorophenol ND 0.338 1 10/09/2022 12:52 WG1938242 2,4-Dichlorophenol ND 0.338 1 10/09/2022 12:52 WG1938242 2,4-Dimethylphenol ND 0.338 1 10/09/2022 12:52 WG1938242 4,6-Dinitro-2-methylphenol ND 0.338 1 10/09/2022 12:52 WG1938242 2,4-Dinitrophenol ND 0.338 1 10/09/2022 12:52 WG1938242 2-Nitrophenol ND 0.338 1 10/09/2022 12:52 WG1938242 4-Nitrophenol ND 0.338 1 10/09/2022 12:52 WG1938242 Pentachlorophenol ND 0.338 1 10/09/2022 12:52 WG1938242 Phenol ND 0.338 1 10/09/2022 12:52 WG1938242 2,4,6-Trichlorophenol ND 0.338 1 10/09/2022 12:52 WG1938242 (S) Nitrobenzene-d5 58.7 10.0-122 10/09/2022 12:52 WG1938242 (S) 2-Fluorobiphenyl 61.5 15.0-120 10/09/2022 12:52 WG1938242 (S) p-Terphenyl-d14 62.8 10.0-120 10/09/2022 12:52 WG1938242 1 Cp 2 Tc 3 Ss 4 Cn 5 Sr 6 Qc 7 Gl 8 Al 9 Sc ACCOUNT:PROJECT:SDG:DATE/TIME:PAGE: Tetra Tech Inc. - UT L1540996 10/22/22 11:13 7 of 42 ACCOUNT:PROJECT:SDG:DATE/TIME:PAGE: Tetra Tech Inc. - UT L1540996 10/24/22 14:09 7 of 42 SAMPLE RESULTS - 01 L1540996 CONE-SS Collected date/time: 09/27/22 16:39 Semi Volatile Organic Compounds (GC/MS) by Method 8270C Result (dry) Qualifier RDL (dry) Dilution Analysis Batch Analyte mg/kg mg/kg date / time (S) Phenol-d5 52.4 10.0-120 10/09/2022 12:52 WG1938242 (S) 2-Fluorophenol 58.7 12.0-120 10/09/2022 12:52 WG1938242 (S) 2,4,6-Tribromophenol 71.5 10.0-127 10/09/2022 12:52 WG1938242 1 Cp 2 Tc 3 Ss 4 Cn 5 Sr 6 Qc 7 Gl 8 Al 9 Sc ACCOUNT:PROJECT:SDG:DATE/TIME:PAGE: Tetra Tech Inc. - UT L1540996 10/22/22 11:13 8 of 42 ACCOUNT:PROJECT:SDG:DATE/TIME:PAGE: Tetra Tech Inc. - UT L1540996 10/24/22 14:09 8 of 42 SAMPLE RESULTS - 02 L1540996 POND-SS Collected date/time: 09/27/22 16:57 Total Solids by Method 2540 G-2011 Result Qualifier Dilution Analysis Batch Analyte %date / time Total Solids 83.7 1 10/01/2022 13:36 WG1935129 Mercury by Method 7471A Result (dry) Qualifier RDL (dry) Dilution Analysis Batch Analyte mg/kg mg/kg date / time Mercury ND 0.0478 1 10/06/2022 14:12 WG1936004 Metals (ICP) by Method 6010B Result (dry) Qualifier RDL (dry) Dilution Analysis Batch Analyte mg/kg mg/kg date / time Antimony ND 2.39 1 10/17/2022 21:15 WG1937016 Arsenic 2.84 2.39 1 10/17/2022 21:15 WG1937016 Beryllium ND 0.239 1 10/17/2022 21:15 WG1937016 Cadmium ND 0.597 1 10/17/2022 21:15 WG1937016 Chromium 61.8 1.19 1 10/17/2022 21:15 WG1937016 Copper 56.4 2.39 1 10/17/2022 21:15 WG1937016 Lead 10.3 0.597 1 10/17/2022 21:15 WG1937016 Nickel 30.6 2.39 1 10/17/2022 21:15 WG1937016 Selenium ND 2.39 1 10/17/2022 21:15 WG1937016 Silver ND 1.19 1 10/17/2022 21:15 WG1937016 Thallium ND 2.39 1 10/17/2022 21:15 WG1937016 Zinc 33.0 5.97 1 10/17/2022 21:15 WG1937016 Volatile Organic Compounds (GC) by Method 8015D/GRO Result (dry) Qualifier RDL (dry) Dilution Analysis Batch Analyte mg/kg mg/kg date / time TPH (GC/FID) Low Fraction 0.256 B 0.119 1 10/04/2022 08:08 WG1936665 (S) a,a,a-Trifluorotoluene(FID) 95.3 77.0-120 10/04/2022 08:08 WG1936665 Volatile Organic Compounds (GC/MS) by Method 8260B Result (dry) Qualifier RDL (dry) Dilution Analysis Batch Analyte mg/kg mg/kg date / time Acetone ND 0.0694 1 10/04/2022 09:22 WG1936772 Acrylonitrile ND 0.0174 1 10/04/2022 09:22 WG1936772 Benzene 0.00143 0.00139 1 10/04/2022 09:22 WG1936772 Bromobenzene ND 0.0174 1 10/04/2022 09:22 WG1936772 Bromodichloromethane ND 0.00347 1 10/04/2022 09:22 WG1936772 Bromoform ND 0.0347 1 10/04/2022 09:22 WG1936772 Bromomethane ND 0.0174 1 10/04/2022 09:22 WG1936772 n-Butylbenzene ND 0.0174 1 10/04/2022 09:22 WG1936772 sec-Butylbenzene ND 0.0174 1 10/04/2022 09:22 WG1936772 tert-Butylbenzene ND 0.00694 1 10/04/2022 09:22 WG1936772 Carbon tetrachloride ND 0.00694 1 10/04/2022 09:22 WG1936772 Chlorobenzene ND 0.00347 1 10/04/2022 09:22 WG1936772 Chlorodibromomethane ND 0.00347 1 10/04/2022 09:22 WG1936772 Chloroethane ND 0.00694 1 10/04/2022 09:22 WG1936772 Chloroform ND 0.00347 1 10/04/2022 09:22 WG1936772 Chloromethane ND 0.0174 1 10/04/2022 09:22 WG1936772 2-Chlorotoluene ND 0.00347 1 10/04/2022 09:22 WG1936772 4-Chlorotoluene ND 0.00694 1 10/04/2022 09:22 WG1936772 1,2-Dibromo-3-Chloropropane ND 0.0347 1 10/04/2022 09:22 WG1936772 1,2-Dibromoethane ND 0.00347 1 10/04/2022 09:22 WG1936772 Dibromomethane ND 0.00694 1 10/04/2022 09:22 WG1936772 1,2-Dichlorobenzene ND 0.00694 1 10/04/2022 09:22 WG1936772 1 Cp 2 Tc 3 Ss 4 Cn 5 Sr 6 Qc 7 Gl 8 Al 9 Sc ACCOUNT:PROJECT:SDG:DATE/TIME:PAGE: Tetra Tech Inc. - UT L1540996 10/22/22 11:13 9 of 42 ACCOUNT:PROJECT:SDG:DATE/TIME:PAGE: Tetra Tech Inc. - UT L1540996 10/24/22 14:09 9 of 42 SAMPLE RESULTS - 02 L1540996 POND-SS Collected date/time: 09/27/22 16:57 Volatile Organic Compounds (GC/MS) by Method 8260B Result (dry) Qualifier RDL (dry) Dilution Analysis Batch Analyte mg/kg mg/kg date / time 1,3-Dichlorobenzene ND 0.00694 1 10/04/2022 09:22 WG1936772 1,4-Dichlorobenzene ND 0.00694 1 10/04/2022 09:22 WG1936772 Dichlorodifluoromethane ND 0.00347 1 10/04/2022 09:22 WG1936772 1,1-Dichloroethane ND 0.00347 1 10/04/2022 09:22 WG1936772 1,2-Dichloroethane ND 0.00347 1 10/04/2022 09:22 WG1936772 1,1-Dichloroethene ND 0.00347 1 10/04/2022 09:22 WG1936772 cis-1,2-Dichloroethene ND 0.00347 1 10/04/2022 09:22 WG1936772 trans-1,2-Dichloroethene ND 0.00694 1 10/04/2022 09:22 WG1936772 1,2-Dichloropropane ND 0.00694 1 10/04/2022 09:22 WG1936772 1,1-Dichloropropene ND 0.00347 1 10/04/2022 09:22 WG1936772 1,3-Dichloropropane ND 0.00694 1 10/04/2022 09:22 WG1936772 cis-1,3-Dichloropropene ND 0.00347 1 10/04/2022 09:22 WG1936772 trans-1,3-Dichloropropene ND 0.00694 1 10/04/2022 09:22 WG1936772 2,2-Dichloropropane ND 0.00347 1 10/04/2022 09:22 WG1936772 Di-isopropyl ether ND 0.00139 1 10/04/2022 09:22 WG1936772 Ethylbenzene ND 0.00347 1 10/04/2022 09:22 WG1936772 Hexachloro-1,3-butadiene ND 0.0347 1 10/04/2022 09:22 WG1936772 Isopropylbenzene ND 0.00347 1 10/04/2022 09:22 WG1936772 p-Isopropyltoluene ND 0.00694 1 10/04/2022 09:22 WG1936772 2-Butanone (MEK)ND 0.139 1 10/04/2022 09:22 WG1936772 Methylene Chloride ND 0.0347 1 10/04/2022 09:22 WG1936772 4-Methyl-2-pentanone (MIBK) ND 0.0347 1 10/04/2022 09:22 WG1936772 Methyl tert-butyl ether ND 0.00139 1 10/04/2022 09:22 WG1936772 Naphthalene ND 0.0174 1 10/04/2022 09:22 WG1936772 n-Propylbenzene ND 0.00694 1 10/04/2022 09:22 WG1936772 Styrene ND 0.0174 1 10/04/2022 09:22 WG1936772 1,1,1,2-Tetrachloroethane ND 0.00347 1 10/04/2022 09:22 WG1936772 1,1,2,2-Tetrachloroethane ND 0.00347 1 10/04/2022 09:22 WG1936772 1,1,2-Trichlorotrifluoroethane ND 0.00347 1 10/04/2022 09:22 WG1936772 Tetrachloroethene ND 0.00347 1 10/04/2022 09:22 WG1936772 Toluene ND 0.00694 1 10/04/2022 09:22 WG1936772 1,2,3-Trichlorobenzene ND 0.0174 1 10/04/2022 09:22 WG1936772 1,2,4-Trichlorobenzene ND 0.0174 1 10/04/2022 09:22 WG1936772 1,1,1-Trichloroethane ND 0.00347 1 10/04/2022 09:22 WG1936772 1,1,2-Trichloroethane ND 0.00347 1 10/04/2022 09:22 WG1936772 Trichloroethene ND 0.00139 1 10/04/2022 09:22 WG1936772 Trichlorofluoromethane ND 0.00347 1 10/04/2022 09:22 WG1936772 1,2,3-Trichloropropane ND 0.0174 1 10/04/2022 09:22 WG1936772 1,2,4-Trimethylbenzene ND 0.00694 1 10/04/2022 09:22 WG1936772 1,2,3-Trimethylbenzene ND 0.00694 1 10/04/2022 09:22 WG1936772 1,3,5-Trimethylbenzene ND 0.00694 1 10/04/2022 09:22 WG1936772 Vinyl chloride ND 0.00347 1 10/04/2022 09:22 WG1936772 Xylenes, Total ND 0.00902 1 10/04/2022 09:22 WG1936772 (S) Toluene-d8 101 75.0-131 10/04/2022 09:22 WG1936772 (S) 4-Bromofluorobenzene 106 67.0-138 10/04/2022 09:22 WG1936772 (S) 1,2-Dichloroethane-d4 87.4 70.0-130 10/04/2022 09:22 WG1936772 Semi-Volatile Organic Compounds (GC) by Method 8015 Result (dry) Qualifier RDL (dry) Dilution Analysis Batch Analyte mg/kg mg/kg date / time C10-C28 Diesel Range 56.6 47.8 10 10/07/2022 18:19 WG1938298 C28-C40 Oil Range 351 47.8 10 10/07/2022 18:19 WG1938298 (S) o-Terphenyl 40.0 18.0-148 10/07/2022 18:19 WG1938298 1 Cp 2 Tc 3 Ss 4 Cn 5 Sr 6 Qc 7 Gl 8 Al 9 Sc ACCOUNT:PROJECT:SDG:DATE/TIME:PAGE: Tetra Tech Inc. - UT L1540996 10/22/22 11:13 10 of 42 ACCOUNT:PROJECT:SDG:DATE/TIME:PAGE: Tetra Tech Inc. - UT L1540996 10/24/22 14:09 10 of 42 SAMPLE RESULTS - 02 L1540996 POND-SS Collected date/time: 09/27/22 16:57 Semi Volatile Organic Compounds (GC/MS) by Method 8270C Result (dry) Qualifier RDL (dry) Dilution Analysis Batch Analyte mg/kg mg/kg date / time Acenaphthene ND 0.0795 2 10/09/2022 13:32 WG1938242 Acenaphthylene ND 0.0795 2 10/09/2022 13:32 WG1938242 Anthracene ND 0.0795 2 10/09/2022 13:32 WG1938242 Benzidine ND 3.99 2 10/09/2022 13:32 WG1938242 Benzo(a)anthracene ND 0.0795 2 10/09/2022 13:32 WG1938242 Benzo(b)fluoranthene ND 0.0795 2 10/09/2022 13:32 WG1938242 Benzo(k)fluoranthene ND 0.0795 2 10/09/2022 13:32 WG1938242 Benzo(g,h,i)perylene ND 0.0795 2 10/09/2022 13:32 WG1938242 Benzo(a)pyrene ND 0.0795 2 10/09/2022 13:32 WG1938242 Bis(2-chlorethoxy)methane ND 0.795 2 10/09/2022 13:32 WG1938242 Bis(2-chloroethyl)ether ND 0.795 2 10/09/2022 13:32 WG1938242 2,2-Oxybis(1-Chloropropane) ND 0.795 2 10/09/2022 13:32 WG1938242 4-Bromophenyl-phenylether ND 0.795 2 10/09/2022 13:32 WG1938242 2-Chloronaphthalene ND 0.0795 2 10/09/2022 13:32 WG1938242 4-Chlorophenyl-phenylether ND 0.795 2 10/09/2022 13:32 WG1938242 Chrysene ND 0.0795 2 10/09/2022 13:32 WG1938242 Dibenz(a,h)anthracene ND 0.0795 2 10/09/2022 13:32 WG1938242 3,3-Dichlorobenzidine ND 0.795 2 10/09/2022 13:32 WG1938242 2,4-Dinitrotoluene ND 0.795 2 10/09/2022 13:32 WG1938242 2,6-Dinitrotoluene ND 0.795 2 10/09/2022 13:32 WG1938242 Fluoranthene ND 0.0795 2 10/09/2022 13:32 WG1938242 Fluorene ND 0.0795 2 10/09/2022 13:32 WG1938242 Hexachlorobenzene ND 0.795 2 10/09/2022 13:32 WG1938242 Hexachloro-1,3-butadiene ND 0.795 2 10/09/2022 13:32 WG1938242 Hexachlorocyclopentadiene ND 0.795 2 10/09/2022 13:32 WG1938242 Hexachloroethane ND 0.795 2 10/09/2022 13:32 WG1938242 Indeno(1,2,3-cd)pyrene ND 0.0795 2 10/09/2022 13:32 WG1938242 Isophorone ND 0.795 2 10/09/2022 13:32 WG1938242 Naphthalene ND 0.0795 2 10/09/2022 13:32 WG1938242 Nitrobenzene ND 0.795 2 10/09/2022 13:32 WG1938242 n-Nitrosodimethylamine ND 0.795 2 10/09/2022 13:32 WG1938242 n-Nitrosodiphenylamine ND 0.795 2 10/09/2022 13:32 WG1938242 n-Nitrosodi-n-propylamine ND 0.795 2 10/09/2022 13:32 WG1938242 Phenanthrene ND 0.0795 2 10/09/2022 13:32 WG1938242 Benzylbutyl phthalate ND 0.795 2 10/09/2022 13:32 WG1938242 Bis(2-ethylhexyl)phthalate ND 0.795 2 10/09/2022 13:32 WG1938242 Di-n-butyl phthalate ND 0.795 2 10/09/2022 13:32 WG1938242 Diethyl phthalate ND 0.795 2 10/09/2022 13:32 WG1938242 Dimethyl phthalate ND 0.795 2 10/09/2022 13:32 WG1938242 Di-n-octyl phthalate ND 0.795 2 10/09/2022 13:32 WG1938242 Pyrene ND 0.0795 2 10/09/2022 13:32 WG1938242 1,2,4-Trichlorobenzene ND 0.795 2 10/09/2022 13:32 WG1938242 4-Chloro-3-methylphenol ND 0.795 2 10/09/2022 13:32 WG1938242 2-Chlorophenol ND 0.795 2 10/09/2022 13:32 WG1938242 2,4-Dichlorophenol ND 0.795 2 10/09/2022 13:32 WG1938242 2,4-Dimethylphenol ND 0.795 2 10/09/2022 13:32 WG1938242 4,6-Dinitro-2-methylphenol ND 0.795 2 10/09/2022 13:32 WG1938242 2,4-Dinitrophenol ND 0.795 2 10/09/2022 13:32 WG1938242 2-Nitrophenol ND 0.795 2 10/09/2022 13:32 WG1938242 4-Nitrophenol ND 0.795 2 10/09/2022 13:32 WG1938242 Pentachlorophenol ND 0.795 2 10/09/2022 13:32 WG1938242 Phenol ND 0.795 2 10/09/2022 13:32 WG1938242 2,4,6-Trichlorophenol ND 0.795 2 10/09/2022 13:32 WG1938242 (S) Nitrobenzene-d5 50.8 10.0-122 10/09/2022 13:32 WG1938242 (S) 2-Fluorobiphenyl 51.7 15.0-120 10/09/2022 13:32 WG1938242 (S) p-Terphenyl-d14 51.4 10.0-120 10/09/2022 13:32 WG1938242 1 Cp 2 Tc 3 Ss 4 Cn 5 Sr 6 Qc 7 Gl 8 Al 9 Sc ACCOUNT:PROJECT:SDG:DATE/TIME:PAGE: Tetra Tech Inc. - UT L1540996 10/22/22 11:13 11 of 42 ACCOUNT:PROJECT:SDG:DATE/TIME:PAGE: Tetra Tech Inc. - UT L1540996 10/24/22 14:09 11 of 42 SAMPLE RESULTS - 02 L1540996 POND-SS Collected date/time: 09/27/22 16:57 Semi Volatile Organic Compounds (GC/MS) by Method 8270C Result (dry) Qualifier RDL (dry) Dilution Analysis Batch Analyte mg/kg mg/kg date / time (S) Phenol-d5 45.4 10.0-120 10/09/2022 13:32 WG1938242 (S) 2-Fluorophenol 50.8 12.0-120 10/09/2022 13:32 WG1938242 (S) 2,4,6-Tribromophenol 62.5 10.0-127 10/09/2022 13:32 WG1938242 Sample Narrative: L1540996-02 WG1938242: Dilution due to matrix impact during extraction procedure 1 Cp 2 Tc 3 Ss 4 Cn 5 Sr 6 Qc 7 Gl 8 Al 9 Sc ACCOUNT:PROJECT:SDG:DATE/TIME:PAGE: Tetra Tech Inc. - UT L1540996 10/22/22 11:13 12 of 42 ACCOUNT:PROJECT:SDG:DATE/TIME:PAGE: Tetra Tech Inc. - UT L1540996 10/24/22 14:09 12 of 42 SAMPLE RESULTS - 03 L1540996 CONF-SS Collected date/time: 09/27/22 17:21 Total Solids by Method 2540 G-2011 Result Qualifier Dilution Analysis Batch Analyte %date / time Total Solids 81.9 1 10/01/2022 13:18 WG1935131 Mercury by Method 7471A Result (dry) Qualifier RDL (dry) Dilution Analysis Batch Analyte mg/kg mg/kg date / time Mercury ND 0.0488 1 10/06/2022 14:19 WG1936004 Metals (ICP) by Method 6010B Result (dry) Qualifier RDL (dry) Dilution Analysis Batch Analyte mg/kg mg/kg date / time Antimony ND 2.44 1 10/13/2022 23:18 WG1937018 Arsenic 4.21 2.44 1 10/13/2022 23:18 WG1937018 Beryllium 0.482 0.244 1 10/13/2022 23:18 WG1937018 Cadmium ND 0.610 1 10/13/2022 23:18 WG1937018 Chromium 13.6 1.22 1 10/13/2022 23:18 WG1937018 Copper 12.4 2.44 1 10/13/2022 23:18 WG1937018 Lead 9.98 0.610 1 10/13/2022 23:18 WG1937018 Nickel 7.86 2.44 1 10/13/2022 23:18 WG1937018 Selenium ND 2.44 1 10/13/2022 23:18 WG1937018 Silver ND 1.22 1 10/13/2022 23:18 WG1937018 Thallium ND 2.44 1 10/13/2022 23:18 WG1937018 Zinc 43.6 6.10 1 10/13/2022 23:18 WG1937018 Volatile Organic Compounds (GC) by Method 8015D/GRO Result (dry) Qualifier RDL (dry) Dilution Analysis Batch Analyte mg/kg mg/kg date / time TPH (GC/FID) Low Fraction ND 0.122 1 10/04/2022 08:31 WG1936665 (S) a,a,a-Trifluorotoluene(FID) 96.2 77.0-120 10/04/2022 08:31 WG1936665 Volatile Organic Compounds (GC/MS) by Method 8260B Result (dry) Qualifier RDL (dry) Dilution Analysis Batch Analyte mg/kg mg/kg date / time Acetone ND 0.0721 1 10/04/2022 09:40 WG1936772 Acrylonitrile ND 0.0180 1 10/04/2022 09:40 WG1936772 Benzene ND 0.00144 1 10/04/2022 09:40 WG1936772 Bromobenzene ND 0.0180 1 10/04/2022 09:40 WG1936772 Bromodichloromethane ND 0.00360 1 10/04/2022 09:40 WG1936772 Bromoform ND 0.0360 1 10/04/2022 09:40 WG1936772 Bromomethane ND 0.0180 1 10/04/2022 09:40 WG1936772 n-Butylbenzene ND 0.0180 1 10/04/2022 09:40 WG1936772 sec-Butylbenzene ND 0.0180 1 10/04/2022 09:40 WG1936772 tert-Butylbenzene ND 0.00721 1 10/04/2022 09:40 WG1936772 Carbon tetrachloride ND 0.00721 1 10/04/2022 09:40 WG1936772 Chlorobenzene ND 0.00360 1 10/04/2022 09:40 WG1936772 Chlorodibromomethane ND 0.00360 1 10/04/2022 09:40 WG1936772 Chloroethane ND 0.00721 1 10/04/2022 09:40 WG1936772 Chloroform ND 0.00360 1 10/04/2022 09:40 WG1936772 Chloromethane ND 0.0180 1 10/04/2022 09:40 WG1936772 2-Chlorotoluene ND 0.00360 1 10/04/2022 09:40 WG1936772 4-Chlorotoluene ND 0.00721 1 10/04/2022 09:40 WG1936772 1,2-Dibromo-3-Chloropropane ND 0.0360 1 10/04/2022 09:40 WG1936772 1,2-Dibromoethane ND 0.00360 1 10/04/2022 09:40 WG1936772 Dibromomethane ND 0.00721 1 10/04/2022 09:40 WG1936772 1,2-Dichlorobenzene ND 0.00721 1 10/04/2022 09:40 WG1936772 1 Cp 2 Tc 3 Ss 4 Cn 5 Sr 6 Qc 7 Gl 8 Al 9 Sc ACCOUNT:PROJECT:SDG:DATE/TIME:PAGE: Tetra Tech Inc. - UT L1540996 10/22/22 11:13 13 of 42 ACCOUNT:PROJECT:SDG:DATE/TIME:PAGE: Tetra Tech Inc. - UT L1540996 10/24/22 14:09 13 of 42 SAMPLE RESULTS - 03 L1540996 CONF-SS Collected date/time: 09/27/22 17:21 Volatile Organic Compounds (GC/MS) by Method 8260B Result (dry) Qualifier RDL (dry) Dilution Analysis Batch Analyte mg/kg mg/kg date / time 1,3-Dichlorobenzene ND 0.00721 1 10/04/2022 09:40 WG1936772 1,4-Dichlorobenzene ND 0.00721 1 10/04/2022 09:40 WG1936772 Dichlorodifluoromethane ND 0.00360 1 10/04/2022 09:40 WG1936772 1,1-Dichloroethane ND 0.00360 1 10/04/2022 09:40 WG1936772 1,2-Dichloroethane ND 0.00360 1 10/04/2022 09:40 WG1936772 1,1-Dichloroethene ND 0.00360 1 10/04/2022 09:40 WG1936772 cis-1,2-Dichloroethene ND 0.00360 1 10/04/2022 09:40 WG1936772 trans-1,2-Dichloroethene ND 0.00721 1 10/04/2022 09:40 WG1936772 1,2-Dichloropropane ND 0.00721 1 10/04/2022 09:40 WG1936772 1,1-Dichloropropene ND 0.00360 1 10/04/2022 09:40 WG1936772 1,3-Dichloropropane ND 0.00721 1 10/04/2022 09:40 WG1936772 cis-1,3-Dichloropropene ND 0.00360 1 10/04/2022 09:40 WG1936772 trans-1,3-Dichloropropene ND 0.00721 1 10/04/2022 09:40 WG1936772 2,2-Dichloropropane ND 0.00360 1 10/04/2022 09:40 WG1936772 Di-isopropyl ether ND 0.00144 1 10/04/2022 09:40 WG1936772 Ethylbenzene ND 0.00360 1 10/04/2022 09:40 WG1936772 Hexachloro-1,3-butadiene ND 0.0360 1 10/04/2022 09:40 WG1936772 Isopropylbenzene ND 0.00360 1 10/04/2022 09:40 WG1936772 p-Isopropyltoluene ND 0.00721 1 10/04/2022 09:40 WG1936772 2-Butanone (MEK)ND 0.144 1 10/04/2022 09:40 WG1936772 Methylene Chloride ND 0.0360 1 10/04/2022 09:40 WG1936772 4-Methyl-2-pentanone (MIBK) ND 0.0360 1 10/04/2022 09:40 WG1936772 Methyl tert-butyl ether ND 0.00144 1 10/04/2022 09:40 WG1936772 Naphthalene ND 0.0180 1 10/04/2022 09:40 WG1936772 n-Propylbenzene ND 0.00721 1 10/04/2022 09:40 WG1936772 Styrene ND 0.0180 1 10/04/2022 09:40 WG1936772 1,1,1,2-Tetrachloroethane ND 0.00360 1 10/04/2022 09:40 WG1936772 1,1,2,2-Tetrachloroethane ND 0.00360 1 10/04/2022 09:40 WG1936772 1,1,2-Trichlorotrifluoroethane ND 0.00360 1 10/04/2022 09:40 WG1936772 Tetrachloroethene ND 0.00360 1 10/04/2022 09:40 WG1936772 Toluene ND 0.00721 1 10/04/2022 09:40 WG1936772 1,2,3-Trichlorobenzene ND 0.0180 1 10/04/2022 09:40 WG1936772 1,2,4-Trichlorobenzene ND 0.0180 1 10/04/2022 09:40 WG1936772 1,1,1-Trichloroethane ND 0.00360 1 10/04/2022 09:40 WG1936772 1,1,2-Trichloroethane ND 0.00360 1 10/04/2022 09:40 WG1936772 Trichloroethene ND 0.00144 1 10/04/2022 09:40 WG1936772 Trichlorofluoromethane ND 0.00360 1 10/04/2022 09:40 WG1936772 1,2,3-Trichloropropane ND 0.0180 1 10/04/2022 09:40 WG1936772 1,2,4-Trimethylbenzene ND 0.00721 1 10/04/2022 09:40 WG1936772 1,2,3-Trimethylbenzene ND 0.00721 1 10/04/2022 09:40 WG1936772 1,3,5-Trimethylbenzene ND 0.00721 1 10/04/2022 09:40 WG1936772 Vinyl chloride ND 0.00360 1 10/04/2022 09:40 WG1936772 Xylenes, Total ND 0.00937 1 10/04/2022 09:40 WG1936772 (S) Toluene-d8 106 75.0-131 10/04/2022 09:40 WG1936772 (S) 4-Bromofluorobenzene 98.8 67.0-138 10/04/2022 09:40 WG1936772 (S) 1,2-Dichloroethane-d4 83.9 70.0-130 10/04/2022 09:40 WG1936772 Semi-Volatile Organic Compounds (GC) by Method 8015 Result (dry) Qualifier RDL (dry) Dilution Analysis Batch Analyte mg/kg mg/kg date / time C10-C28 Diesel Range 684 97.7 20 10/07/2022 18:45 WG1938298 C28-C40 Oil Range 1810 97.7 20 10/07/2022 18:45 WG1938298 (S) o-Terphenyl 0.000 J7 18.0-148 10/07/2022 18:45 WG1938298 1 Cp 2 Tc 3 Ss 4 Cn 5 Sr 6 Qc 7 Gl 8 Al 9 Sc ACCOUNT:PROJECT:SDG:DATE/TIME:PAGE: Tetra Tech Inc. - UT L1540996 10/22/22 11:13 14 of 42 ACCOUNT:PROJECT:SDG:DATE/TIME:PAGE: Tetra Tech Inc. - UT L1540996 10/24/22 14:09 14 of 42 SAMPLE RESULTS - 03 L1540996 CONF-SS Collected date/time: 09/27/22 17:21 Semi Volatile Organic Compounds (GC/MS) by Method 8270C Result (dry) Qualifier RDL (dry) Dilution Analysis Batch Analyte mg/kg mg/kg date / time Acenaphthene ND 0.406 10 10/09/2022 16:56 WG1938242 Acenaphthylene ND 0.406 10 10/09/2022 16:56 WG1938242 Anthracene ND 0.406 10 10/09/2022 16:56 WG1938242 Benzidine ND 20.4 10 10/09/2022 16:56 WG1938242 Benzo(a)anthracene ND 0.406 10 10/09/2022 16:56 WG1938242 Benzo(b)fluoranthene ND 0.406 10 10/09/2022 16:56 WG1938242 Benzo(k)fluoranthene ND 0.406 10 10/09/2022 16:56 WG1938242 Benzo(g,h,i)perylene ND 0.406 10 10/09/2022 16:56 WG1938242 Benzo(a)pyrene ND 0.406 10 10/09/2022 16:56 WG1938242 Bis(2-chlorethoxy)methane ND 4.06 10 10/09/2022 16:56 WG1938242 Bis(2-chloroethyl)ether ND 4.06 10 10/09/2022 16:56 WG1938242 2,2-Oxybis(1-Chloropropane) ND 4.06 10 10/09/2022 16:56 WG1938242 4-Bromophenyl-phenylether ND 4.06 10 10/09/2022 16:56 WG1938242 2-Chloronaphthalene ND 0.406 10 10/09/2022 16:56 WG1938242 4-Chlorophenyl-phenylether ND 4.06 10 10/09/2022 16:56 WG1938242 Chrysene ND 0.406 10 10/09/2022 16:56 WG1938242 Dibenz(a,h)anthracene ND 0.406 10 10/09/2022 16:56 WG1938242 3,3-Dichlorobenzidine ND 4.06 10 10/09/2022 16:56 WG1938242 2,4-Dinitrotoluene ND 4.06 10 10/09/2022 16:56 WG1938242 2,6-Dinitrotoluene ND 4.06 10 10/09/2022 16:56 WG1938242 Fluoranthene ND 0.406 10 10/09/2022 16:56 WG1938242 Fluorene ND 0.406 10 10/09/2022 16:56 WG1938242 Hexachlorobenzene ND 4.06 10 10/09/2022 16:56 WG1938242 Hexachloro-1,3-butadiene ND 4.06 10 10/09/2022 16:56 WG1938242 Hexachlorocyclopentadiene ND 4.06 10 10/09/2022 16:56 WG1938242 Hexachloroethane ND 4.06 10 10/09/2022 16:56 WG1938242 Indeno(1,2,3-cd)pyrene ND 0.406 10 10/09/2022 16:56 WG1938242 Isophorone ND 4.06 10 10/09/2022 16:56 WG1938242 Naphthalene ND 0.406 10 10/09/2022 16:56 WG1938242 Nitrobenzene ND 4.06 10 10/09/2022 16:56 WG1938242 n-Nitrosodimethylamine ND 4.06 10 10/09/2022 16:56 WG1938242 n-Nitrosodiphenylamine ND 4.06 10 10/09/2022 16:56 WG1938242 n-Nitrosodi-n-propylamine ND 4.06 10 10/09/2022 16:56 WG1938242 Phenanthrene ND 0.406 10 10/09/2022 16:56 WG1938242 Benzylbutyl phthalate ND 4.06 10 10/09/2022 16:56 WG1938242 Bis(2-ethylhexyl)phthalate ND 4.06 10 10/09/2022 16:56 WG1938242 Di-n-butyl phthalate ND 4.06 10 10/09/2022 16:56 WG1938242 Diethyl phthalate ND 4.06 10 10/09/2022 16:56 WG1938242 Dimethyl phthalate ND 4.06 10 10/09/2022 16:56 WG1938242 Di-n-octyl phthalate ND 4.06 10 10/09/2022 16:56 WG1938242 Pyrene ND 0.406 10 10/09/2022 16:56 WG1938242 1,2,4-Trichlorobenzene ND 4.06 10 10/09/2022 16:56 WG1938242 4-Chloro-3-methylphenol ND 4.06 10 10/09/2022 16:56 WG1938242 2-Chlorophenol ND 4.06 10 10/09/2022 16:56 WG1938242 2,4-Dichlorophenol ND 4.06 10 10/09/2022 16:56 WG1938242 2,4-Dimethylphenol ND 4.06 10 10/09/2022 16:56 WG1938242 4,6-Dinitro-2-methylphenol ND 4.06 10 10/09/2022 16:56 WG1938242 2,4-Dinitrophenol ND 4.06 10 10/09/2022 16:56 WG1938242 2-Nitrophenol ND 4.06 10 10/09/2022 16:56 WG1938242 4-Nitrophenol ND 4.06 10 10/09/2022 16:56 WG1938242 Pentachlorophenol ND 4.06 10 10/09/2022 16:56 WG1938242 Phenol ND 4.06 10 10/09/2022 16:56 WG1938242 2,4,6-Trichlorophenol ND 4.06 10 10/09/2022 16:56 WG1938242 (S) Nitrobenzene-d5 68.0 10.0-122 10/09/2022 16:56 WG1938242 (S) 2-Fluorobiphenyl 72.6 15.0-120 10/09/2022 16:56 WG1938242 (S) p-Terphenyl-d14 74.4 10.0-120 10/09/2022 16:56 WG1938242 1 Cp 2 Tc 3 Ss 4 Cn 5 Sr 6 Qc 7 Gl 8 Al 9 Sc ACCOUNT:PROJECT:SDG:DATE/TIME:PAGE: Tetra Tech Inc. - UT L1540996 10/22/22 11:13 15 of 42 ACCOUNT:PROJECT:SDG:DATE/TIME:PAGE: Tetra Tech Inc. - UT L1540996 10/24/22 14:09 15 of 42 SAMPLE RESULTS - 03 L1540996 CONF-SS Collected date/time: 09/27/22 17:21 Semi Volatile Organic Compounds (GC/MS) by Method 8270C Result (dry) Qualifier RDL (dry) Dilution Analysis Batch Analyte mg/kg mg/kg date / time (S) Phenol-d5 62.2 10.0-120 10/09/2022 16:56 WG1938242 (S) 2-Fluorophenol 68.1 12.0-120 10/09/2022 16:56 WG1938242 (S) 2,4,6-Tribromophenol 94.2 10.0-127 10/09/2022 16:56 WG1938242 Sample Narrative: L1540996-03 WG1938242: Dilution due to matrix impact during extraction procedure 1 Cp 2 Tc 3 Ss 4 Cn 5 Sr 6 Qc 7 Gl 8 Al 9 Sc ACCOUNT:PROJECT:SDG:DATE/TIME:PAGE: Tetra Tech Inc. - UT L1540996 10/22/22 11:13 16 of 42 ACCOUNT:PROJECT:SDG:DATE/TIME:PAGE: Tetra Tech Inc. - UT L1540996 10/24/22 14:09 16 of 42 QUALITY CONTROL SUMMARYWG1935129 Total Solids by Method 2540 G-2011 L1540996-01,02 Method Blank (MB) (MB) R3844019-1 10/01/22 13:36 MB Result MB Qualifier MB MDL MB RDL Analyte %%% Total Solids 0.00200 L1540994-28 Original Sample (OS) • Duplicate (DUP) (OS) L1540994-28 10/01/22 13:36 • (DUP) R3844019-3 10/01/22 13:36 Original Result DUP Result Dilution DUP RPD DUP Qualifier DUP RPD Limits Analyte %%%% Total Solids 71.4 69.6 1 2.51 10 Laboratory Control Sample (LCS) (LCS) R3844019-2 10/01/22 13:36 Spike Amount LCS Result LCS Rec. Rec. Limits LCS Qualifier Analyte %%%% Total Solids 50.0 50.0 100 85.0-115 1 Cp 2 Tc 3 Ss 4 Cn 5 Sr 6 Qc 7 Gl 8 Al 9 Sc ACCOUNT:PROJECT:SDG:DATE/TIME:PAGE: Tetra Tech Inc. - UT L1540996 10/22/22 11:13 17 of 42 ACCOUNT:PROJECT:SDG:DATE/TIME:PAGE: Tetra Tech Inc. - UT L1540996 10/24/22 14:09 17 of 42 QUALITY CONTROL SUMMARYWG1935131 Total Solids by Method 2540 G-2011 L1540996-03 Method Blank (MB) (MB) R3844017-1 10/01/22 13:18 MB Result MB Qualifier MB MDL MB RDL Analyte %%% Total Solids 0.00100 L1541025-01 Original Sample (OS) • Duplicate (DUP) (OS) L1541025-01 10/01/22 13:18 • (DUP) R3844017-3 10/01/22 13:18 Original Result DUP Result Dilution DUP RPD DUP Qualifier DUP RPD Limits Analyte %%%% Total Solids 90.4 90.3 1 0.118 10 Laboratory Control Sample (LCS) (LCS) R3844017-2 10/01/22 13:18 Spike Amount LCS Result LCS Rec. Rec. Limits LCS Qualifier Analyte %%%% Total Solids 50.0 50.0 100 85.0-115 1 Cp 2 Tc 3 Ss 4 Cn 5 Sr 6 Qc 7 Gl 8 Al 9 Sc ACCOUNT:PROJECT:SDG:DATE/TIME:PAGE: Tetra Tech Inc. - UT L1540996 10/22/22 11:13 18 of 42 ACCOUNT:PROJECT:SDG:DATE/TIME:PAGE: Tetra Tech Inc. - UT L1540996 10/24/22 14:09 18 of 42 QUALITY CONTROL SUMMARYWG1936004 Mercury by Method 7471A L1540996-01,02,03 Method Blank (MB) (MB) R3845494-1 10/06/22 13:48 MB Result MB Qualifier MB MDL MB RDL Analyte mg/kg mg/kg mg/kg Mercury U 0.0180 0.0400 Laboratory Control Sample (LCS) (LCS) R3845494-2 10/06/22 13:51 Spike Amount LCS Result LCS Rec. Rec. Limits LCS Qualifier Analyte mg/kg mg/kg %% Mercury 0.500 0.514 103 80.0-120 L1540973-02 Original Sample (OS) • Matrix Spike (MS) • Matrix Spike Duplicate (MSD) (OS) L1540973-02 10/06/22 13:54 • (MS) R3845494-3 10/06/22 15:12 • (MSD) R3845494-4 10/06/22 15:15 Spike Amount (dry) Original Result (dry)MS Result (dry)MSD Result (dry)MS Rec. MSD Rec. Dilution Rec. Limits MS Qualifier MSD Qualifier RPD RPD Limits Analyte mg/kg mg/kg mg/kg mg/kg %%%%% Mercury 0.602 0.0781 0.652 0.721 95.4 107 1 75.0-125 10.0 20 1 Cp 2 Tc 3 Ss 4 Cn 5 Sr 6 Qc 7 Gl 8 Al 9 Sc ACCOUNT:PROJECT:SDG:DATE/TIME:PAGE: Tetra Tech Inc. - UT L1540996 10/22/22 11:13 19 of 42 ACCOUNT:PROJECT:SDG:DATE/TIME:PAGE: Tetra Tech Inc. - UT L1540996 10/24/22 14:09 19 of 42 QUALITY CONTROL SUMMARYWG1937016 Metals (ICP) by Method 6010B L1540996-01,02 Method Blank (MB) (MB) R3849743-1 10/17/22 19:50 MB Result MB Qualifier MB MDL MB RDL Analyte mg/kg mg/kg mg/kg Antimony U 0.544 2.00 Arsenic U 0.518 2.00 Beryllium U 0.0315 0.200 Cadmium U 0.0471 0.500 Chromium 0.401 J 0.133 1.00 Copper U 0.400 2.00 Lead U 0.208 0.500 Nickel 0.159 J 0.132 2.00 Selenium U 0.764 2.00 Silver U 0.127 1.00 Thallium U 0.394 2.00 Zinc U 0.832 5.00 Laboratory Control Sample (LCS) (LCS) R3849743-2 10/17/22 19:53 Spike Amount LCS Result LCS Rec. Rec. Limits LCS Qualifier Analyte mg/kg mg/kg %% Antimony 100 97.6 97.6 80.0-120 Arsenic 100 95.6 95.6 80.0-120 Beryllium 100 99.7 99.7 80.0-120 Cadmium 100 97.2 97.2 80.0-120 Chromium 100 100 100 80.0-120 Copper 100 99.2 99.2 80.0-120 Lead 100 95.9 95.9 80.0-120 Nickel 100 97.5 97.5 80.0-120 Selenium 100 98.0 98.0 80.0-120 Silver 20.0 18.2 91.0 80.0-120 Thallium 100 94.9 94.9 80.0-120 Zinc 100 96.5 96.5 80.0-120 L1540994-13 Original Sample (OS) • Matrix Spike (MS) • Matrix Spike Duplicate (MSD) (OS) L1540994-13 10/17/22 19:56 • (MS) R3849743-5 10/17/22 20:04 • (MSD) R3849743-6 10/17/22 20:07 Spike Amount (dry) Original Result (dry)MS Result (dry)MSD Result (dry)MS Rec. MSD Rec. Dilution Rec. Limits MS Qualifier MSD Qualifier RPD RPD Limits Analyte mg/kg mg/kg mg/kg mg/kg %%%%% Antimony 124 ND 69.2 79.4 55.1 63.4 1 75.0-125 J6 J6 13.7 20 Arsenic 124 6.25 122 126 93.5 97.0 1 75.0-125 3.51 20 1 Cp 2 Tc 3 Ss 4 Cn 5 Sr 6 Qc 7 Gl 8 Al 9 Sc ACCOUNT:PROJECT:SDG:DATE/TIME:PAGE: Tetra Tech Inc. - UT L1540996 10/22/22 11:13 20 of 42 ACCOUNT:PROJECT:SDG:DATE/TIME:PAGE: Tetra Tech Inc. - UT L1540996 10/24/22 14:09 20 of 42 QUALITY CONTROL SUMMARYWG1937016 Metals (ICP) by Method 6010B L1540996-01,02 L1540994-13 Original Sample (OS) • Matrix Spike (MS) • Matrix Spike Duplicate (MSD) (OS) L1540994-13 10/17/22 19:56 • (MS) R3849743-5 10/17/22 20:04 • (MSD) R3849743-6 10/17/22 20:07 Spike Amount (dry) Original Result (dry)MS Result (dry)MSD Result (dry)MS Rec. MSD Rec. Dilution Rec. Limits MS Qualifier MSD Qualifier RPD RPD Limits Analyte mg/kg mg/kg mg/kg mg/kg %%%%% Beryllium 124 0.729 124 131 99.5 105 1 75.0-125 5.61 20 Cadmium 124 ND 118 125 95.6 101 1 75.0-125 5.53 20 Chromium 124 34.8 150 149 93.6 92.6 1 75.0-125 0.825 20 Copper 124 8.22 132 138 101 105 1 75.0-125 4.05 20 Lead 124 13.3 135 139 98.5 102 1 75.0-125 3.20 20 Nickel 124 10.4 133 139 99.2 104 1 75.0-125 4.44 20 Selenium 124 ND 118 126 95.6 102 1 75.0-125 6.51 20 Silver 24.7 ND 22.0 23.2 89.2 93.9 1 75.0-125 5.16 20 Thallium 124 ND 115 122 92.9 99.2 1 75.0-125 6.49 20 Zinc 124 24.9 141 145 94.4 97.1 1 75.0-125 2.30 20 1 Cp 2 Tc 3 Ss 4 Cn 5 Sr 6 Qc 7 Gl 8 Al 9 Sc ACCOUNT:PROJECT:SDG:DATE/TIME:PAGE: Tetra Tech Inc. - UT L1540996 10/22/22 11:13 21 of 42 ACCOUNT:PROJECT:SDG:DATE/TIME:PAGE: Tetra Tech Inc. - UT L1540996 10/24/22 14:09 21 of 42 QUALITY CONTROL SUMMARYWG1937018 Metals (ICP) by Method 6010B L1540996-03 Method Blank (MB) (MB) R3848330-1 10/13/22 22:59 MB Result MB Qualifier MB MDL MB RDL Analyte mg/kg mg/kg mg/kg Antimony U 0.544 2.00 Arsenic U 0.518 2.00 Beryllium U 0.0315 0.200 Cadmium U 0.0471 0.500 Chromium U 0.133 1.00 Copper 0.505 J 0.400 2.00 Lead U 0.208 0.500 Nickel U 0.132 2.00 Selenium U 0.764 2.00 Silver U 0.127 1.00 Thallium U 0.394 2.00 Zinc 1.93 J 0.832 5.00 Laboratory Control Sample (LCS) (LCS) R3848330-2 10/13/22 23:01 Spike Amount LCS Result LCS Rec. Rec. Limits LCS Qualifier Analyte mg/kg mg/kg %% Antimony 100 93.6 93.6 80.0-120 Arsenic 100 95.1 95.1 80.0-120 Beryllium 100 95.5 95.5 80.0-120 Cadmium 100 93.1 93.1 80.0-120 Chromium 100 93.6 93.6 80.0-120 Copper 100 94.4 94.4 80.0-120 Lead 100 93.8 93.8 80.0-120 Nickel 100 93.8 93.8 80.0-120 Selenium 100 91.5 91.5 80.0-120 Silver 20.0 18.5 92.3 80.0-120 Thallium 100 94.7 94.7 80.0-120 Zinc 100 93.6 93.6 80.0-120 L1541033-01 Original Sample (OS) • Matrix Spike (MS) • Matrix Spike Duplicate (MSD) (OS) L1541033-01 10/13/22 23:04 • (MS) R3848330-5 10/13/22 23:12 • (MSD) R3848330-6 10/13/22 23:15 Spike Amount (dry) Original Result (dry)MS Result (dry)MSD Result (dry)MS Rec. MSD Rec. Dilution Rec. Limits MS Qualifier MSD Qualifier RPD RPD Limits Analyte mg/kg mg/kg mg/kg mg/kg %%%%% Antimony 108 ND 96.4 98.5 88.8 90.8 1 75.0-125 2.21 20 Arsenic 108 3.54 107 108 95.0 96.3 1 75.0-125 1.29 20 1 Cp 2 Tc 3 Ss 4 Cn 5 Sr 6 Qc 7 Gl 8 Al 9 Sc ACCOUNT:PROJECT:SDG:DATE/TIME:PAGE: Tetra Tech Inc. - UT L1540996 10/22/22 11:13 22 of 42 ACCOUNT:PROJECT:SDG:DATE/TIME:PAGE: Tetra Tech Inc. - UT L1540996 10/24/22 14:09 22 of 42 QUALITY CONTROL SUMMARYWG1937018 Metals (ICP) by Method 6010B L1540996-03 L1541033-01 Original Sample (OS) • Matrix Spike (MS) • Matrix Spike Duplicate (MSD) (OS) L1541033-01 10/13/22 23:04 • (MS) R3848330-5 10/13/22 23:12 • (MSD) R3848330-6 10/13/22 23:15 Spike Amount (dry) Original Result (dry)MS Result (dry)MSD Result (dry)MS Rec. MSD Rec. Dilution Rec. Limits MS Qualifier MSD Qualifier RPD RPD Limits Analyte mg/kg mg/kg mg/kg mg/kg %%%%% Beryllium 108 0.349 102 98.1 93.3 90.1 1 75.0-125 3.43 20 Cadmium 108 ND 102 103 93.5 94.6 1 75.0-125 1.22 20 Chromium 108 3.55 102 96.7 90.3 85.9 1 75.0-125 4.88 20 Copper 108 4.18 104 104 92.2 91.8 1 75.0-125 0.401 20 Lead 108 2.43 101 102 91.2 91.6 1 75.0-125 0.359 20 Nickel 108 4.24 101 99.2 88.9 87.6 1 75.0-125 1.44 20 Selenium 108 ND 99.0 100 91.2 92.2 1 75.0-125 1.07 20 Silver 21.7 ND 20.6 20.7 94.8 95.4 1 75.0-125 0.615 20 Thallium 108 ND 98.5 97.2 90.8 89.6 1 75.0-125 1.33 20 Zinc 108 11.7 99.2 97.9 80.6 79.5 1 75.0-125 1.30 20 1 Cp 2 Tc 3 Ss 4 Cn 5 Sr 6 Qc 7 Gl 8 Al 9 Sc ACCOUNT:PROJECT:SDG:DATE/TIME:PAGE: Tetra Tech Inc. - UT L1540996 10/22/22 11:13 23 of 42 ACCOUNT:PROJECT:SDG:DATE/TIME:PAGE: Tetra Tech Inc. - UT L1540996 10/24/22 14:09 23 of 42 QUALITY CONTROL SUMMARYWG1936665 Volatile Organic Compounds (GC) by Method 8015D/GRO L1540996-01,02,03 Method Blank (MB) (MB) R3845867-2 10/04/22 06:15 MB Result MB Qualifier MB MDL MB RDL Analyte mg/kg mg/kg mg/kg TPH (GC/FID) Low Fraction 0.0227 J 0.0217 0.100 (S) a,a,a-Trifluorotoluene(FID)99.4 77.0-120 Laboratory Control Sample (LCS) (LCS) R3845867-1 10/04/22 05:00 Spike Amount LCS Result LCS Rec. Rec. Limits LCS Qualifier Analyte mg/kg mg/kg %% TPH (GC/FID) Low Fraction 5.50 4.99 90.7 72.0-127 (S) a,a,a-Trifluorotoluene(FID) 101 77.0-120 L1541170-02 Original Sample (OS) • Matrix Spike (MS) • Matrix Spike Duplicate (MSD) (OS) L1541170-02 10/04/22 09:39 • (MS) R3845867-3 10/04/22 15:34 • (MSD) R3845867-4 10/04/22 15:57 Spike Amount Original Result MS Result MSD Result MS Rec. MSD Rec. Dilution Rec. Limits MS Qualifier MSD Qualifier RPD RPD Limits Analyte mg/kg mg/kg mg/kg mg/kg %%%%% TPH (GC/FID) Low Fraction 5.45 0.103 5.90 9.05 106 163 1 10.0-151 J3 J5 42.1 28 (S) a,a,a-Trifluorotoluene(FID) 105 107 77.0-120 1 Cp 2 Tc 3 Ss 4 Cn 5 Sr 6 Qc 7 Gl 8 Al 9 Sc ACCOUNT:PROJECT:SDG:DATE/TIME:PAGE: Tetra Tech Inc. - UT L1540996 10/22/22 11:13 24 of 42 ACCOUNT:PROJECT:SDG:DATE/TIME:PAGE: Tetra Tech Inc. - UT L1540996 10/24/22 14:09 24 of 42 QUALITY CONTROL SUMMARYWG1936759 Volatile Organic Compounds (GC/MS) by Method 8260B L1540996-01 Method Blank (MB) (MB) R3844509-3 10/04/22 00:32 MB Result MB Qualifier MB MDL MB RDL Analyte mg/kg mg/kg mg/kg Acetone U 0.0365 0.0500 Acrylonitrile U 0.00361 0.0125 Benzene U 0.000467 0.00100 Bromobenzene U 0.000900 0.0125 Bromodichloromethane U 0.000725 0.00250 Bromoform U 0.00117 0.0250 Bromomethane U 0.00197 0.0125 n-Butylbenzene U 0.00525 0.0125 sec-Butylbenzene U 0.00288 0.0125 tert-Butylbenzene U 0.00195 0.00500 Carbon tetrachloride U 0.000898 0.00500 Chlorobenzene U 0.000210 0.00250 Chlorodibromomethane U 0.000612 0.00250 Chloroethane U 0.00170 0.00500 Chloroform U 0.00103 0.00250 Chloromethane U 0.00435 0.0125 2-Chlorotoluene U 0.000865 0.00250 4-Chlorotoluene U 0.000450 0.00500 1,2-Dibromo-3-Chloropropane U 0.00390 0.0250 1,2-Dibromoethane U 0.000648 0.00250 Dibromomethane U 0.000750 0.00500 1,2-Dichlorobenzene U 0.000425 0.00500 1,3-Dichlorobenzene U 0.000600 0.00500 1,4-Dichlorobenzene U 0.000700 0.00500 Dichlorodifluoromethane U 0.00161 0.00250 1,1-Dichloroethane U 0.000491 0.00250 1,2-Dichloroethane U 0.000649 0.00250 1,1-Dichloroethene U 0.000606 0.00250 cis-1,2-Dichloroethene U 0.000734 0.00250 trans-1,2-Dichloroethene U 0.00104 0.00500 1,2-Dichloropropane U 0.00142 0.00500 1,1-Dichloropropene U 0.000809 0.00250 1,3-Dichloropropane U 0.000501 0.00500 cis-1,3-Dichloropropene U 0.000757 0.00250 trans-1,3-Dichloropropene U 0.00114 0.00500 2,2-Dichloropropane U 0.00138 0.00250 Di-isopropyl ether U 0.000410 0.00100 Ethylbenzene U 0.000737 0.00250 Hexachloro-1,3-butadiene U 0.00600 0.0250 Isopropylbenzene U 0.000425 0.00250 1 Cp 2 Tc 3 Ss 4 Cn 5 Sr 6 Qc 7 Gl 8 Al 9 Sc ACCOUNT:PROJECT:SDG:DATE/TIME:PAGE: Tetra Tech Inc. - UT L1540996 10/22/22 11:13 25 of 42 ACCOUNT:PROJECT:SDG:DATE/TIME:PAGE: Tetra Tech Inc. - UT L1540996 10/24/22 14:09 25 of 42 QUALITY CONTROL SUMMARYWG1936759 Volatile Organic Compounds (GC/MS) by Method 8260B L1540996-01 Method Blank (MB) (MB) R3844509-3 10/04/22 00:32 MB Result MB Qualifier MB MDL MB RDL Analyte mg/kg mg/kg mg/kg p-Isopropyltoluene U 0.00255 0.00500 2-Butanone (MEK)U 0.0635 0.100 Methylene Chloride U 0.00664 0.0250 4-Methyl-2-pentanone (MIBK) U 0.00228 0.0250 Methyl tert-butyl ether U 0.000350 0.00100 Naphthalene U 0.00488 0.0125 n-Propylbenzene U 0.000950 0.00500 Styrene 0.00210 J 0.000229 0.0125 1,1,1,2-Tetrachloroethane U 0.000948 0.00250 1,1,2,2-Tetrachloroethane U 0.000695 0.00250 1,1,2-Trichlorotrifluoroethane U 0.000754 0.00250 Tetrachloroethene U 0.000896 0.00250 Toluene U 0.00130 0.00500 1,2,3-Trichlorobenzene U 0.00733 0.0125 1,2,4-Trichlorobenzene U 0.00440 0.0125 1,1,1-Trichloroethane U 0.000923 0.00250 1,1,2-Trichloroethane U 0.000597 0.00250 Trichloroethene U 0.000584 0.00100 Trichlorofluoromethane U 0.000827 0.00250 1,2,3-Trichloropropane U 0.00162 0.0125 1,2,4-Trimethylbenzene U 0.00158 0.00500 1,2,3-Trimethylbenzene U 0.00158 0.00500 1,3,5-Trimethylbenzene U 0.00200 0.00500 Vinyl chloride U 0.00116 0.00250 Xylenes, Total U 0.000880 0.00650 (S) Toluene-d8 105 75.0-131 (S) 4-Bromofluorobenzene 99.3 67.0-138 (S) 1,2-Dichloroethane-d4 92.1 70.0-130 Laboratory Control Sample (LCS) • Laboratory Control Sample Duplicate (LCSD) (LCS) R3844509-1 10/03/22 23:16 • (LCSD) R3844509-2 10/03/22 23:35 Spike Amount LCS Result LCSD Result LCS Rec. LCSD Rec. Rec. Limits LCS Qualifier LCSD Qualifier RPD RPD Limits Analyte mg/kg mg/kg mg/kg %%%%% Acetone 0.625 0.899 1.15 144 184 10.0-160 J4 24.5 31 Acrylonitrile 0.625 0.728 0.787 116 126 45.0-153 7.79 22 Benzene 0.125 0.127 0.138 102 110 70.0-123 8.30 20 Bromobenzene 0.125 0.122 0.143 97.6 114 73.0-121 15.8 20 Bromodichloromethane 0.125 0.122 0.133 97.6 106 73.0-121 8.63 20 1 Cp 2 Tc 3 Ss 4 Cn 5 Sr 6 Qc 7 Gl 8 Al 9 Sc ACCOUNT:PROJECT:SDG:DATE/TIME:PAGE: Tetra Tech Inc. - UT L1540996 10/22/22 11:13 26 of 42 ACCOUNT:PROJECT:SDG:DATE/TIME:PAGE: Tetra Tech Inc. - UT L1540996 10/24/22 14:09 26 of 42 QUALITY CONTROL SUMMARYWG1936759 Volatile Organic Compounds (GC/MS) by Method 8260B L1540996-01 Laboratory Control Sample (LCS) • Laboratory Control Sample Duplicate (LCSD) (LCS) R3844509-1 10/03/22 23:16 • (LCSD) R3844509-2 10/03/22 23:35 Spike Amount LCS Result LCSD Result LCS Rec. LCSD Rec. Rec. Limits LCS Qualifier LCSD Qualifier RPD RPD Limits Analyte mg/kg mg/kg mg/kg %%%%% Bromoform 0.125 0.143 0.159 114 127 64.0-132 10.6 20 Bromomethane 0.125 0.0984 0.0976 78.7 78.1 56.0-147 0.816 20 n-Butylbenzene 0.125 0.0938 0.105 75.0 84.0 68.0-135 11.3 20 sec-Butylbenzene 0.125 0.106 0.122 84.8 97.6 74.0-130 14.0 20 tert-Butylbenzene 0.125 0.111 0.128 88.8 102 75.0-127 14.2 20 Carbon tetrachloride 0.125 0.144 0.153 115 122 66.0-128 6.06 20 Chlorobenzene 0.125 0.121 0.131 96.8 105 76.0-128 7.94 20 Chlorodibromomethane 0.125 0.120 0.130 96.0 104 74.0-127 8.00 20 Chloroethane 0.125 0.118 0.120 94.4 96.0 61.0-134 1.68 20 Chloroform 0.125 0.127 0.138 102 110 72.0-123 8.30 20 Chloromethane 0.125 0.0905 0.0958 72.4 76.6 51.0-138 5.69 20 2-Chlorotoluene 0.125 0.112 0.128 89.6 102 75.0-124 13.3 20 4-Chlorotoluene 0.125 0.114 0.132 91.2 106 75.0-124 14.6 20 1,2-Dibromo-3-Chloropropane 0.125 0.0954 0.109 76.3 87.2 59.0-130 13.3 20 1,2-Dibromoethane 0.125 0.128 0.136 102 109 74.0-128 6.06 20 Dibromomethane 0.125 0.136 0.146 109 117 75.0-122 7.09 20 1,2-Dichlorobenzene 0.125 0.111 0.124 88.8 99.2 76.0-124 11.1 20 1,3-Dichlorobenzene 0.125 0.114 0.125 91.2 100 76.0-125 9.21 20 1,4-Dichlorobenzene 0.125 0.115 0.124 92.0 99.2 77.0-121 7.53 20 Dichlorodifluoromethane 0.125 0.118 0.122 94.4 97.6 43.0-156 3.33 20 1,1-Dichloroethane 0.125 0.123 0.137 98.4 110 70.0-127 10.8 20 1,2-Dichloroethane 0.125 0.137 0.151 110 121 65.0-131 9.72 20 1,1-Dichloroethene 0.125 0.116 0.125 92.8 100 65.0-131 7.47 20 cis-1,2-Dichloroethene 0.125 0.123 0.132 98.4 106 73.0-125 7.06 20 trans-1,2-Dichloroethene 0.125 0.121 0.134 96.8 107 71.0-125 10.2 20 1,2-Dichloropropane 0.125 0.115 0.122 92.0 97.6 74.0-125 5.91 20 1,1-Dichloropropene 0.125 0.137 0.149 110 119 73.0-125 8.39 20 1,3-Dichloropropane 0.125 0.115 0.123 92.0 98.4 80.0-125 6.72 20 cis-1,3-Dichloropropene 0.125 0.123 0.132 98.4 106 76.0-127 7.06 20 trans-1,3-Dichloropropene 0.125 0.119 0.128 95.2 102 73.0-127 7.29 20 2,2-Dichloropropane 0.125 0.161 0.167 129 134 59.0-135 3.66 20 Di-isopropyl ether 0.125 0.110 0.121 88.0 96.8 60.0-136 9.52 20 Ethylbenzene 0.125 0.122 0.129 97.6 103 74.0-126 5.58 20 Hexachloro-1,3-butadiene 0.125 0.129 0.150 103 120 57.0-150 15.1 20 Isopropylbenzene 0.125 0.130 0.138 104 110 72.0-127 5.97 20 p-Isopropyltoluene 0.125 0.107 0.120 85.6 96.0 72.0-133 11.5 20 2-Butanone (MEK)0.625 0.669 0.733 107 117 30.0-160 9.13 24 Methylene Chloride 0.125 0.127 0.139 102 111 68.0-123 9.02 20 4-Methyl-2-pentanone (MIBK) 0.625 0.509 0.554 81.4 88.6 56.0-143 8.47 20 Methyl tert-butyl ether 0.125 0.135 0.148 108 118 66.0-132 9.19 20 1 Cp 2 Tc 3 Ss 4 Cn 5 Sr 6 Qc 7 Gl 8 Al 9 Sc ACCOUNT:PROJECT:SDG:DATE/TIME:PAGE: Tetra Tech Inc. - UT L1540996 10/22/22 11:13 27 of 42 ACCOUNT:PROJECT:SDG:DATE/TIME:PAGE: Tetra Tech Inc. - UT L1540996 10/24/22 14:09 27 of 42 QUALITY CONTROL SUMMARYWG1936759 Volatile Organic Compounds (GC/MS) by Method 8260B L1540996-01 Laboratory Control Sample (LCS) • Laboratory Control Sample Duplicate (LCSD) (LCS) R3844509-1 10/03/22 23:16 • (LCSD) R3844509-2 10/03/22 23:35 Spike Amount LCS Result LCSD Result LCS Rec. LCSD Rec. Rec. Limits LCS Qualifier LCSD Qualifier RPD RPD Limits Analyte mg/kg mg/kg mg/kg %%%%% Naphthalene 0.125 0.0690 0.0805 55.2 64.4 59.0-130 J4 15.4 20 n-Propylbenzene 0.125 0.106 0.122 84.8 97.6 74.0-126 14.0 20 Styrene 0.125 0.122 0.132 97.6 106 72.0-127 7.87 20 1,1,1,2-Tetrachloroethane 0.125 0.138 0.141 110 113 74.0-129 2.15 20 1,1,2,2-Tetrachloroethane 0.125 0.0861 0.0974 68.9 77.9 68.0-128 12.3 20 1,1,2-Trichlorotrifluoroethane 0.125 0.132 0.141 106 113 61.0-139 6.59 20 Tetrachloroethene 0.125 0.148 0.163 118 130 70.0-136 9.65 20 Toluene 0.125 0.123 0.131 98.4 105 75.0-121 6.30 20 1,2,3-Trichlorobenzene 0.125 0.0794 0.0953 63.5 76.2 59.0-139 18.2 20 1,2,4-Trichlorobenzene 0.125 0.0939 0.110 75.1 88.0 62.0-137 15.8 20 1,1,1-Trichloroethane 0.125 0.137 0.147 110 118 69.0-126 7.04 20 1,1,2-Trichloroethane 0.125 0.113 0.119 90.4 95.2 78.0-123 5.17 20 Trichloroethene 0.125 0.153 0.166 122 133 76.0-126 J4 8.15 20 Trichlorofluoromethane 0.125 0.103 0.105 82.4 84.0 61.0-142 1.92 20 1,2,3-Trichloropropane 0.125 0.116 0.135 92.8 108 67.0-129 15.1 20 1,2,4-Trimethylbenzene 0.125 0.106 0.118 84.8 94.4 70.0-126 10.7 20 1,2,3-Trimethylbenzene 0.125 0.102 0.113 81.6 90.4 74.0-124 10.2 20 1,3,5-Trimethylbenzene 0.125 0.110 0.121 88.0 96.8 73.0-127 9.52 20 Vinyl chloride 0.125 0.105 0.109 84.0 87.2 63.0-134 3.74 20 Xylenes, Total 0.375 0.373 0.399 99.5 106 72.0-127 6.74 20 (S) Toluene-d8 100 98.9 75.0-131 (S) 4-Bromofluorobenzene 113 109 67.0-138 (S) 1,2-Dichloroethane-d4 110 109 70.0-130 1 Cp 2 Tc 3 Ss 4 Cn 5 Sr 6 Qc 7 Gl 8 Al 9 Sc ACCOUNT:PROJECT:SDG:DATE/TIME:PAGE: Tetra Tech Inc. - UT L1540996 10/22/22 11:13 28 of 42 ACCOUNT:PROJECT:SDG:DATE/TIME:PAGE: Tetra Tech Inc. - UT L1540996 10/24/22 14:09 28 of 42 QUALITY CONTROL SUMMARYWG1936772 Volatile Organic Compounds (GC/MS) by Method 8260B L1540996-02,03 Method Blank (MB) (MB) R3846090-3 10/04/22 00:23 MB Result MB Qualifier MB MDL MB RDL Analyte mg/kg mg/kg mg/kg Acetone U 0.0365 0.0500 Acrylonitrile U 0.00361 0.0125 Benzene U 0.000467 0.00100 Bromobenzene U 0.000900 0.0125 Bromodichloromethane U 0.000725 0.00250 Bromoform U 0.00117 0.0250 Bromomethane U 0.00197 0.0125 n-Butylbenzene U 0.00525 0.0125 sec-Butylbenzene U 0.00288 0.0125 tert-Butylbenzene U 0.00195 0.00500 Carbon tetrachloride U 0.000898 0.00500 Chlorobenzene U 0.000210 0.00250 Chlorodibromomethane U 0.000612 0.00250 Chloroethane U 0.00170 0.00500 Chloroform U 0.00103 0.00250 Chloromethane U 0.00435 0.0125 2-Chlorotoluene U 0.000865 0.00250 4-Chlorotoluene U 0.000450 0.00500 1,2-Dibromo-3-Chloropropane U 0.00390 0.0250 1,2-Dibromoethane U 0.000648 0.00250 Dibromomethane U 0.000750 0.00500 1,2-Dichlorobenzene U 0.000425 0.00500 1,3-Dichlorobenzene U 0.000600 0.00500 1,4-Dichlorobenzene U 0.000700 0.00500 Dichlorodifluoromethane U 0.00161 0.00250 1,1-Dichloroethane U 0.000491 0.00250 1,2-Dichloroethane U 0.000649 0.00250 1,1-Dichloroethene U 0.000606 0.00250 cis-1,2-Dichloroethene U 0.000734 0.00250 trans-1,2-Dichloroethene U 0.00104 0.00500 1,2-Dichloropropane U 0.00142 0.00500 1,1-Dichloropropene U 0.000809 0.00250 1,3-Dichloropropane U 0.000501 0.00500 cis-1,3-Dichloropropene U 0.000757 0.00250 trans-1,3-Dichloropropene U 0.00114 0.00500 2,2-Dichloropropane U 0.00138 0.00250 Di-isopropyl ether U 0.000410 0.00100 Ethylbenzene U 0.000737 0.00250 Hexachloro-1,3-butadiene U 0.00600 0.0250 Isopropylbenzene U 0.000425 0.00250 1 Cp 2 Tc 3 Ss 4 Cn 5 Sr 6 Qc 7 Gl 8 Al 9 Sc ACCOUNT:PROJECT:SDG:DATE/TIME:PAGE: Tetra Tech Inc. - UT L1540996 10/22/22 11:13 29 of 42 ACCOUNT:PROJECT:SDG:DATE/TIME:PAGE: Tetra Tech Inc. - UT L1540996 10/24/22 14:09 29 of 42 QUALITY CONTROL SUMMARYWG1936772 Volatile Organic Compounds (GC/MS) by Method 8260B L1540996-02,03 Method Blank (MB) (MB) R3846090-3 10/04/22 00:23 MB Result MB Qualifier MB MDL MB RDL Analyte mg/kg mg/kg mg/kg p-Isopropyltoluene U 0.00255 0.00500 2-Butanone (MEK)U 0.0635 0.100 Methylene Chloride U 0.00664 0.0250 4-Methyl-2-pentanone (MIBK) U 0.00228 0.0250 Methyl tert-butyl ether U 0.000350 0.00100 Naphthalene U 0.00488 0.0125 n-Propylbenzene U 0.000950 0.00500 Styrene 0.00255 J 0.000229 0.0125 1,1,1,2-Tetrachloroethane U 0.000948 0.00250 1,1,2,2-Tetrachloroethane U 0.000695 0.00250 1,1,2-Trichlorotrifluoroethane U 0.000754 0.00250 Tetrachloroethene U 0.000896 0.00250 Toluene U 0.00130 0.00500 1,2,3-Trichlorobenzene U 0.00733 0.0125 1,2,4-Trichlorobenzene U 0.00440 0.0125 1,1,1-Trichloroethane U 0.000923 0.00250 1,1,2-Trichloroethane U 0.000597 0.00250 Trichloroethene U 0.000584 0.00100 Trichlorofluoromethane U 0.000827 0.00250 1,2,3-Trichloropropane U 0.00162 0.0125 1,2,4-Trimethylbenzene U 0.00158 0.00500 1,2,3-Trimethylbenzene U 0.00158 0.00500 1,3,5-Trimethylbenzene U 0.00200 0.00500 Vinyl chloride U 0.00116 0.00250 Xylenes, Total U 0.000880 0.00650 (S) Toluene-d8 103 75.0-131 (S) 4-Bromofluorobenzene 103 67.0-138 (S) 1,2-Dichloroethane-d4 89.4 70.0-130 Laboratory Control Sample (LCS) • Laboratory Control Sample Duplicate (LCSD) (LCS) R3846090-1 10/03/22 23:08 • (LCSD) R3846090-2 10/03/22 23:27 Spike Amount LCS Result LCSD Result LCS Rec. LCSD Rec. Rec. Limits LCS Qualifier LCSD Qualifier RPD RPD Limits Analyte mg/kg mg/kg mg/kg %%%%% Acetone 0.625 0.578 0.559 92.5 89.4 10.0-160 3.34 31 Acrylonitrile 0.625 0.586 0.543 93.8 86.9 45.0-153 7.62 22 Benzene 0.125 0.138 0.132 110 106 70.0-123 4.44 20 Bromobenzene 0.125 0.136 0.122 109 97.6 73.0-121 10.9 20 Bromodichloromethane 0.125 0.127 0.120 102 96.0 73.0-121 5.67 20 1 Cp 2 Tc 3 Ss 4 Cn 5 Sr 6 Qc 7 Gl 8 Al 9 Sc ACCOUNT:PROJECT:SDG:DATE/TIME:PAGE: Tetra Tech Inc. - UT L1540996 10/22/22 11:13 30 of 42 ACCOUNT:PROJECT:SDG:DATE/TIME:PAGE: Tetra Tech Inc. - UT L1540996 10/24/22 14:09 30 of 42 QUALITY CONTROL SUMMARYWG1936772 Volatile Organic Compounds (GC/MS) by Method 8260B L1540996-02,03 Laboratory Control Sample (LCS) • Laboratory Control Sample Duplicate (LCSD) (LCS) R3846090-1 10/03/22 23:08 • (LCSD) R3846090-2 10/03/22 23:27 Spike Amount LCS Result LCSD Result LCS Rec. LCSD Rec. Rec. Limits LCS Qualifier LCSD Qualifier RPD RPD Limits Analyte mg/kg mg/kg mg/kg %%%%% Bromoform 0.125 0.144 0.136 115 109 64.0-132 5.71 20 Bromomethane 0.125 0.112 0.105 89.6 84.0 56.0-147 6.45 20 n-Butylbenzene 0.125 0.128 0.121 102 96.8 68.0-135 5.62 20 sec-Butylbenzene 0.125 0.128 0.121 102 96.8 74.0-130 5.62 20 tert-Butylbenzene 0.125 0.131 0.122 105 97.6 75.0-127 7.11 20 Carbon tetrachloride 0.125 0.118 0.124 94.4 99.2 66.0-128 4.96 20 Chlorobenzene 0.125 0.127 0.120 102 96.0 76.0-128 5.67 20 Chlorodibromomethane 0.125 0.132 0.122 106 97.6 74.0-127 7.87 20 Chloroethane 0.125 0.135 0.127 108 102 61.0-134 6.11 20 Chloroform 0.125 0.122 0.113 97.6 90.4 72.0-123 7.66 20 Chloromethane 0.125 0.112 0.104 89.6 83.2 51.0-138 7.41 20 2-Chlorotoluene 0.125 0.124 0.126 99.2 101 75.0-124 1.60 20 4-Chlorotoluene 0.125 0.129 0.119 103 95.2 75.0-124 8.06 20 1,2-Dibromo-3-Chloropropane 0.125 0.115 0.106 92.0 84.8 59.0-130 8.14 20 1,2-Dibromoethane 0.125 0.123 0.127 98.4 102 74.0-128 3.20 20 Dibromomethane 0.125 0.135 0.120 108 96.0 75.0-122 11.8 20 1,2-Dichlorobenzene 0.125 0.123 0.119 98.4 95.2 76.0-124 3.31 20 1,3-Dichlorobenzene 0.125 0.129 0.120 103 96.0 76.0-125 7.23 20 1,4-Dichlorobenzene 0.125 0.119 0.114 95.2 91.2 77.0-121 4.29 20 Dichlorodifluoromethane 0.125 0.126 0.109 101 87.2 43.0-156 14.5 20 1,1-Dichloroethane 0.125 0.127 0.118 102 94.4 70.0-127 7.35 20 1,2-Dichloroethane 0.125 0.111 0.108 88.8 86.4 65.0-131 2.74 20 1,1-Dichloroethene 0.125 0.131 0.124 105 99.2 65.0-131 5.49 20 cis-1,2-Dichloroethene 0.125 0.145 0.132 116 106 73.0-125 9.39 20 trans-1,2-Dichloroethene 0.125 0.130 0.120 104 96.0 71.0-125 8.00 20 1,2-Dichloropropane 0.125 0.134 0.129 107 103 74.0-125 3.80 20 1,1-Dichloropropene 0.125 0.134 0.125 107 100 73.0-125 6.95 20 1,3-Dichloropropane 0.125 0.140 0.127 112 102 80.0-125 9.74 20 cis-1,3-Dichloropropene 0.125 0.135 0.125 108 100 76.0-127 7.69 20 trans-1,3-Dichloropropene 0.125 0.125 0.120 100 96.0 73.0-127 4.08 20 2,2-Dichloropropane 0.125 0.133 0.130 106 104 59.0-135 2.28 20 Di-isopropyl ether 0.125 0.111 0.105 88.8 84.0 60.0-136 5.56 20 Ethylbenzene 0.125 0.122 0.125 97.6 100 74.0-126 2.43 20 Hexachloro-1,3-butadiene 0.125 0.130 0.136 104 109 57.0-150 4.51 20 Isopropylbenzene 0.125 0.128 0.126 102 101 72.0-127 1.57 20 p-Isopropyltoluene 0.125 0.127 0.125 102 100 72.0-133 1.59 20 2-Butanone (MEK)0.625 0.545 0.544 87.2 87.0 30.0-160 0.184 24 Methylene Chloride 0.125 0.142 0.127 114 102 68.0-123 11.2 20 4-Methyl-2-pentanone (MIBK) 0.625 0.559 0.540 89.4 86.4 56.0-143 3.46 20 Methyl tert-butyl ether 0.125 0.117 0.112 93.6 89.6 66.0-132 4.37 20 1 Cp 2 Tc 3 Ss 4 Cn 5 Sr 6 Qc 7 Gl 8 Al 9 Sc ACCOUNT:PROJECT:SDG:DATE/TIME:PAGE: Tetra Tech Inc. - UT L1540996 10/22/22 11:13 31 of 42 ACCOUNT:PROJECT:SDG:DATE/TIME:PAGE: Tetra Tech Inc. - UT L1540996 10/24/22 14:09 31 of 42 QUALITY CONTROL SUMMARYWG1936772 Volatile Organic Compounds (GC/MS) by Method 8260B L1540996-02,03 Laboratory Control Sample (LCS) • Laboratory Control Sample Duplicate (LCSD) (LCS) R3846090-1 10/03/22 23:08 • (LCSD) R3846090-2 10/03/22 23:27 Spike Amount LCS Result LCSD Result LCS Rec. LCSD Rec. Rec. Limits LCS Qualifier LCSD Qualifier RPD RPD Limits Analyte mg/kg mg/kg mg/kg %%%%% Naphthalene 0.125 0.129 0.141 103 113 59.0-130 8.89 20 n-Propylbenzene 0.125 0.127 0.123 102 98.4 74.0-126 3.20 20 Styrene 0.125 0.120 0.117 96.0 93.6 72.0-127 2.53 20 1,1,1,2-Tetrachloroethane 0.125 0.116 0.118 92.8 94.4 74.0-129 1.71 20 1,1,2,2-Tetrachloroethane 0.125 0.116 0.114 92.8 91.2 68.0-128 1.74 20 1,1,2-Trichlorotrifluoroethane 0.125 0.152 0.143 122 114 61.0-139 6.10 20 Tetrachloroethene 0.125 0.127 0.129 102 103 70.0-136 1.56 20 Toluene 0.125 0.125 0.123 100 98.4 75.0-121 1.61 20 1,2,3-Trichlorobenzene 0.125 0.139 0.142 111 114 59.0-139 2.14 20 1,2,4-Trichlorobenzene 0.125 0.131 0.136 105 109 62.0-137 3.75 20 1,1,1-Trichloroethane 0.125 0.114 0.121 91.2 96.8 69.0-126 5.96 20 1,1,2-Trichloroethane 0.125 0.139 0.142 111 114 78.0-123 2.14 20 Trichloroethene 0.125 0.134 0.125 107 100 76.0-126 6.95 20 Trichlorofluoromethane 0.125 0.127 0.119 102 95.2 61.0-142 6.50 20 1,2,3-Trichloropropane 0.125 0.111 0.102 88.8 81.6 67.0-129 8.45 20 1,2,4-Trimethylbenzene 0.125 0.121 0.122 96.8 97.6 70.0-126 0.823 20 1,2,3-Trimethylbenzene 0.125 0.117 0.115 93.6 92.0 74.0-124 1.72 20 1,3,5-Trimethylbenzene 0.125 0.125 0.125 100 100 73.0-127 0.000 20 Vinyl chloride 0.125 0.149 0.139 119 111 63.0-134 6.94 20 Xylenes, Total 0.375 0.383 0.386 102 103 72.0-127 0.780 20 (S) Toluene-d8 101 100 75.0-131 (S) 4-Bromofluorobenzene 96.8 99.1 67.0-138 (S) 1,2-Dichloroethane-d4 87.1 85.7 70.0-130 1 Cp 2 Tc 3 Ss 4 Cn 5 Sr 6 Qc 7 Gl 8 Al 9 Sc ACCOUNT:PROJECT:SDG:DATE/TIME:PAGE: Tetra Tech Inc. - UT L1540996 10/22/22 11:13 32 of 42 ACCOUNT:PROJECT:SDG:DATE/TIME:PAGE: Tetra Tech Inc. - UT L1540996 10/24/22 14:09 32 of 42 QUALITY CONTROL SUMMARYWG1938249 Semi-Volatile Organic Compounds (GC) by Method 8015 L1540996-01 Method Blank (MB) (MB) R3845979-2 10/07/22 11:13 MB Result MB Qualifier MB MDL MB RDL Analyte mg/kg mg/kg mg/kg C10-C28 Diesel Range U 1.61 4.00 C28-C40 Oil Range U 0.274 4.00 (S) o-Terphenyl 56.9 18.0-148 Laboratory Control Sample (LCS) (LCS) R3845979-1 10/07/22 10:59 Spike Amount LCS Result LCS Rec. Rec. Limits LCS Qualifier Analyte mg/kg mg/kg %% C10-C28 Diesel Range 50.0 34.1 68.2 50.0-150 (S) o-Terphenyl 62.9 18.0-148 L1540839-06 Original Sample (OS) • Matrix Spike (MS) • Matrix Spike Duplicate (MSD) (OS) L1540839-06 10/07/22 12:12 • (MS) R3845979-3 10/07/22 12:25 • (MSD) R3845979-4 10/07/22 12:39 Spike Amount (dry) Original Result (dry)MS Result (dry)MSD Result (dry)MS Rec. MSD Rec. Dilution Rec. Limits MS Qualifier MSD Qualifier RPD RPD Limits Analyte mg/kg %%%%% C10-C28 Diesel Range 52.1 ND 27.0 28.6 51.9 54.8 1 50.0-150 5.51 20 (S) o-Terphenyl 32.5 41.8 18.0-148 1 Cp 2 Tc 3 Ss 4 Cn 5 Sr 6 Qc 7 Gl 8 Al 9 Sc ACCOUNT:PROJECT:SDG:DATE/TIME:PAGE: Tetra Tech Inc. - UT L1540996 10/22/22 11:13 33 of 42 ACCOUNT:PROJECT:SDG:DATE/TIME:PAGE: Tetra Tech Inc. - UT L1540996 10/24/22 14:09 33 of 42 QUALITY CONTROL SUMMARYWG1938298 Semi-Volatile Organic Compounds (GC) by Method 8015 L1540996-02,03 Method Blank (MB) (MB) R3845980-2 10/07/22 14:33 MB Result MB Qualifier MB MDL MB RDL Analyte mg/kg mg/kg mg/kg C10-C28 Diesel Range U 1.61 4.00 C28-C40 Oil Range U 0.274 4.00 (S) o-Terphenyl 69.2 18.0-148 Laboratory Control Sample (LCS) (LCS) R3845980-1 10/07/22 14:19 Spike Amount LCS Result LCS Rec. Rec. Limits LCS Qualifier Analyte mg/kg mg/kg %% C10-C28 Diesel Range 50.0 37.3 74.6 50.0-150 (S) o-Terphenyl 67.1 18.0-148 L1541123-01 Original Sample (OS) • Matrix Spike (MS) • Matrix Spike Duplicate (MSD) (OS) L1541123-01 10/08/22 15:20 • (MS) R3846231-1 10/08/22 15:34 • (MSD) R3846231-2 10/08/22 15:47 Spike Amount (dry) Original Result (dry)MS Result (dry)MSD Result (dry)MS Rec. MSD Rec. Dilution Rec. Limits MS Qualifier MSD Qualifier RPD RPD Limits Analyte mg/kg mg/kg mg/kg mg/kg %%%%% C10-C28 Diesel Range 48.2 45.1 62.2 66.8 35.4 44.9 10 50.0-150 J6 J6 7.24 20 (S) o-Terphenyl 58.2 50.1 18.0-148 Sample Narrative: OS: Cannot run at lower dilution due to viscosity of extract 1 Cp 2 Tc 3 Ss 4 Cn 5 Sr 6 Qc 7 Gl 8 Al 9 Sc ACCOUNT:PROJECT:SDG:DATE/TIME:PAGE: Tetra Tech Inc. - UT L1540996 10/22/22 11:13 34 of 42 ACCOUNT:PROJECT:SDG:DATE/TIME:PAGE: Tetra Tech Inc. - UT L1540996 10/24/22 14:09 34 of 42 QUALITY CONTROL SUMMARYWG1938242 Semi Volatile Organic Compounds (GC/MS) by Method 8270C L1540996-01,02,03 Method Blank (MB) (MB) R3846781-2 10/09/22 10:30 MB Result MB Qualifier MB MDL MB RDL Analyte mg/kg mg/kg mg/kg Acenaphthene U 0.00539 0.0333 Acenaphthylene U 0.00469 0.0333 Anthracene U 0.00593 0.0333 Benzidine U 0.0626 1.67 Benzo(a)anthracene U 0.00587 0.0333 Benzo(b)fluoranthene U 0.00621 0.0333 Benzo(k)fluoranthene U 0.00592 0.0333 Benzo(g,h,i)perylene U 0.00609 0.0333 Benzo(a)pyrene U 0.00619 0.0333 Bis(2-chlorethoxy)methane U 0.0100 0.333 Bis(2-chloroethyl)ether U 0.0110 0.333 2,2-Oxybis(1-Chloropropane) U 0.0144 0.333 4-Bromophenyl-phenylether U 0.0117 0.333 2-Chloronaphthalene U 0.00585 0.0333 4-Chlorophenyl-phenylether U 0.0116 0.333 Chrysene U 0.00662 0.0333 Dibenz(a,h)anthracene U 0.00923 0.0333 3,3-Dichlorobenzidine U 0.0123 0.333 2,4-Dinitrotoluene U 0.00955 0.333 2,6-Dinitrotoluene U 0.0109 0.333 Fluoranthene U 0.00601 0.0333 Fluorene U 0.00542 0.0333 Hexachlorobenzene U 0.0118 0.333 Hexachloro-1,3-butadiene U 0.0112 0.333 Hexachlorocyclopentadiene U 0.0175 0.333 Hexachloroethane U 0.0131 0.333 Indeno(1,2,3-cd)pyrene U 0.00941 0.0333 Isophorone U 0.0102 0.333 Naphthalene U 0.00836 0.0333 Nitrobenzene U 0.0116 0.333 n-Nitrosodimethylamine U 0.0494 0.333 n-Nitrosodiphenylamine U 0.0252 0.333 n-Nitrosodi-n-propylamine U 0.0111 0.333 Phenanthrene U 0.00661 0.0333 Benzylbutyl phthalate U 0.0104 0.333 Bis(2-ethylhexyl)phthalate U 0.0422 0.333 Di-n-butyl phthalate U 0.0114 0.333 Diethyl phthalate U 0.0110 0.333 Dimethyl phthalate U 0.0706 0.333 Di-n-octyl phthalate U 0.0225 0.333 1 Cp 2 Tc 3 Ss 4 Cn 5 Sr 6 Qc 7 Gl 8 Al 9 Sc ACCOUNT:PROJECT:SDG:DATE/TIME:PAGE: Tetra Tech Inc. - UT L1540996 10/22/22 11:13 35 of 42 ACCOUNT:PROJECT:SDG:DATE/TIME:PAGE: Tetra Tech Inc. - UT L1540996 10/24/22 14:09 35 of 42 QUALITY CONTROL SUMMARYWG1938242 Semi Volatile Organic Compounds (GC/MS) by Method 8270C L1540996-01,02,03 Method Blank (MB) (MB) R3846781-2 10/09/22 10:30 MB Result MB Qualifier MB MDL MB RDL Analyte mg/kg mg/kg mg/kg Pyrene U 0.00648 0.0333 1,2,4-Trichlorobenzene U 0.0104 0.333 4-Chloro-3-methylphenol U 0.0108 0.333 2-Chlorophenol U 0.0110 0.333 2,4-Dichlorophenol U 0.00970 0.333 2,4-Dimethylphenol U 0.00870 0.333 4,6-Dinitro-2-methylphenol U 0.0755 0.333 2,4-Dinitrophenol U 0.0779 0.333 2-Nitrophenol U 0.0119 0.333 4-Nitrophenol U 0.0104 0.333 Pentachlorophenol U 0.00896 0.333 Phenol U 0.0134 0.333 2,4,6-Trichlorophenol U 0.0107 0.333 (S) Nitrobenzene-d5 66.7 10.0-122 (S) 2-Fluorobiphenyl 69.7 15.0-120 (S) p-Terphenyl-d14 69.7 10.0-120 (S) Phenol-d5 62.5 10.0-120 (S) 2-Fluorophenol 71.8 12.0-120 (S) 2,4,6-Tribromophenol 72.8 10.0-127 Laboratory Control Sample (LCS) (LCS) R3846781-1 10/09/22 10:10 Spike Amount LCS Result LCS Rec. Rec. Limits LCS Qualifier Analyte mg/kg mg/kg %% Acenaphthene 0.666 0.468 70.3 38.0-120 Acenaphthylene 0.666 0.510 76.6 40.0-120 Anthracene 0.666 0.470 70.6 42.0-120 Benzidine 1.33 0.351 26.4 10.0-120 Benzo(a)anthracene 0.666 0.531 79.7 44.0-120 Benzo(b)fluoranthene 0.666 0.518 77.8 43.0-120 Benzo(k)fluoranthene 0.666 0.514 77.2 44.0-120 Benzo(g,h,i)perylene 0.666 0.551 82.7 43.0-120 Benzo(a)pyrene 0.666 0.543 81.5 45.0-120 Bis(2-chlorethoxy)methane 0.666 0.402 60.4 20.0-120 Bis(2-chloroethyl)ether 0.666 0.459 68.9 16.0-120 2,2-Oxybis(1-Chloropropane) 0.666 0.408 61.3 23.0-120 4-Bromophenyl-phenylether 0.666 0.603 90.5 40.0-120 2-Chloronaphthalene 0.666 0.486 73.0 35.0-120 1 Cp 2 Tc 3 Ss 4 Cn 5 Sr 6 Qc 7 Gl 8 Al 9 Sc ACCOUNT:PROJECT:SDG:DATE/TIME:PAGE: Tetra Tech Inc. - UT L1540996 10/22/22 11:13 36 of 42 ACCOUNT:PROJECT:SDG:DATE/TIME:PAGE: Tetra Tech Inc. - UT L1540996 10/24/22 14:09 36 of 42 QUALITY CONTROL SUMMARYWG1938242 Semi Volatile Organic Compounds (GC/MS) by Method 8270C L1540996-01,02,03 Laboratory Control Sample (LCS) (LCS) R3846781-1 10/09/22 10:10 Spike Amount LCS Result LCS Rec. Rec. Limits LCS Qualifier Analyte mg/kg mg/kg %% 4-Chlorophenyl-phenylether 0.666 0.571 85.7 40.0-120 Chrysene 0.666 0.484 72.7 43.0-120 Dibenz(a,h)anthracene 0.666 0.526 79.0 44.0-120 3,3-Dichlorobenzidine 1.33 0.890 66.9 28.0-120 2,4-Dinitrotoluene 0.666 0.584 87.7 45.0-120 2,6-Dinitrotoluene 0.666 0.544 81.7 42.0-120 Fluoranthene 0.666 0.538 80.8 44.0-120 Fluorene 0.666 0.527 79.1 41.0-120 Hexachlorobenzene 0.666 0.533 80.0 39.0-120 Hexachloro-1,3-butadiene 0.666 0.474 71.2 15.0-120 Hexachlorocyclopentadiene 0.666 0.459 68.9 15.0-120 Hexachloroethane 0.666 0.383 57.5 17.0-120 Indeno(1,2,3-cd)pyrene 0.666 0.527 79.1 45.0-120 Isophorone 0.666 0.411 61.7 23.0-120 Naphthalene 0.666 0.383 57.5 18.0-120 Nitrobenzene 0.666 0.376 56.5 17.0-120 n-Nitrosodimethylamine 0.666 0.341 51.2 10.0-125 n-Nitrosodiphenylamine 0.666 0.401 60.2 40.0-120 n-Nitrosodi-n-propylamine 0.666 0.479 71.9 26.0-120 Phenanthrene 0.666 0.480 72.1 42.0-120 Benzylbutyl phthalate 0.666 0.444 66.7 40.0-120 Bis(2-ethylhexyl)phthalate 0.666 0.435 65.3 41.0-120 Di-n-butyl phthalate 0.666 0.447 67.1 43.0-120 Diethyl phthalate 0.666 0.520 78.1 43.0-120 Dimethyl phthalate 0.666 0.552 82.9 43.0-120 Di-n-octyl phthalate 0.666 0.456 68.5 40.0-120 Pyrene 0.666 0.475 71.3 41.0-120 1,2,4-Trichlorobenzene 0.666 0.472 70.9 17.0-120 4-Chloro-3-methylphenol 0.666 0.416 62.5 28.0-120 2-Chlorophenol 0.666 0.438 65.8 28.0-120 2,4-Dichlorophenol 0.666 0.472 70.9 25.0-120 2,4-Dimethylphenol 0.666 0.382 57.4 15.0-120 4,6-Dinitro-2-methylphenol 0.666 0.473 71.0 16.0-120 2,4-Dinitrophenol 0.666 0.387 58.1 10.0-120 2-Nitrophenol 0.666 0.434 65.2 20.0-120 4-Nitrophenol 0.666 0.452 67.9 27.0-120 Pentachlorophenol 0.666 0.473 71.0 29.0-120 Phenol 0.666 0.449 67.4 28.0-120 2,4,6-Trichlorophenol 0.666 0.548 82.3 37.0-120 (S) Nitrobenzene-d5 61.0 10.0-122 1 Cp 2 Tc 3 Ss 4 Cn 5 Sr 6 Qc 7 Gl 8 Al 9 Sc ACCOUNT:PROJECT:SDG:DATE/TIME:PAGE: Tetra Tech Inc. - UT L1540996 10/22/22 11:13 37 of 42 ACCOUNT:PROJECT:SDG:DATE/TIME:PAGE: Tetra Tech Inc. - UT L1540996 10/24/22 14:09 37 of 42 QUALITY CONTROL SUMMARYWG1938242 Semi Volatile Organic Compounds (GC/MS) by Method 8270C L1540996-01,02,03 Laboratory Control Sample (LCS) (LCS) R3846781-1 10/09/22 10:10 Spike Amount LCS Result LCS Rec. Rec. Limits LCS Qualifier Analyte mg/kg mg/kg %% (S) 2-Fluorobiphenyl 74.2 15.0-120 (S) p-Terphenyl-d14 69.1 10.0-120 (S) Phenol-d5 65.8 10.0-120 (S) 2-Fluorophenol 72.8 12.0-120 (S) 2,4,6-Tribromophenol 93.8 10.0-127 L1540973-02 Original Sample (OS) • Matrix Spike (MS) • Matrix Spike Duplicate (MSD) (OS) L1540973-02 10/10/22 23:18 • (MS) R3846958-1 10/10/22 23:41 • (MSD) R3846958-2 10/11/22 00:05 Spike Amount (dry) Original Result (dry)MS Result (dry)MSD Result (dry)MS Rec. MSD Rec. Dilution Rec. Limits MS Qualifier MSD Qualifier RPD RPD Limits Analyte mg/kg mg/kg mg/kg mg/kg %%%%% Acenaphthene 0.778 ND 0.506 0.485 65.0 62.0 2 18.0-120 4.13 32 Acenaphthylene 0.778 ND 0.543 0.543 69.8 69.4 2 25.0-120 0.000 32 Anthracene 0.778 ND 0.507 0.480 65.2 61.4 2 22.0-120 5.37 29 Benzidine 1.55 ND ND ND 12.8 12.8 2 10.0-120 0.604 40 Benzo(a)anthracene 0.778 ND 0.550 0.543 70.7 69.4 2 25.0-120 1.32 29 Benzo(b)fluoranthene 0.778 ND 0.538 0.533 69.2 68.2 2 19.0-122 0.899 31 Benzo(k)fluoranthene 0.778 ND 0.524 0.506 67.3 64.6 2 23.0-120 3.51 30 Benzo(g,h,i)perylene 0.778 ND 0.521 0.500 67.0 63.8 2 10.0-120 4.25 33 Benzo(a)pyrene 0.778 ND 0.610 0.590 78.5 75.4 2 24.0-120 3.41 30 Bis(2-chlorethoxy)methane 0.778 ND ND ND 63.5 60.0 2 10.0-120 5.00 34 Bis(2-chloroethyl)ether 0.778 ND ND ND 74.6 68.9 2 10.0-120 7.31 40 2,2-Oxybis(1-Chloropropane) 0.778 ND ND ND 59.8 56.6 2 10.0-120 4.77 40 4-Bromophenyl-phenylether 0.778 ND ND ND 68.1 66.6 2 27.0-120 1.60 30 2-Chloronaphthalene 0.778 ND 0.503 0.480 64.7 61.4 2 20.0-120 4.65 32 4-Chlorophenyl-phenylether 0.778 ND ND ND 67.6 64.3 2 24.0-120 4.44 29 Chrysene 0.778 ND 0.545 0.527 70.1 67.4 2 21.0-120 3.37 29 Dibenz(a,h)anthracene 0.778 ND 0.524 0.508 67.3 64.9 2 10.0-120 3.03 32 3,3-Dichlorobenzidine 1.55 ND ND ND 8.29 7.85 2 10.0-120 J6 J6 4.78 34 2,4-Dinitrotoluene 0.778 ND ND ND 73.7 70.9 2 30.0-120 3.20 31 2,6-Dinitrotoluene 0.778 ND ND ND 73.2 72.0 2 25.0-120 1.06 31 Fluoranthene 0.778 ND 0.551 0.538 70.9 68.8 2 18.0-126 2.43 32 Fluorene 0.778 ND 0.538 0.526 69.2 67.2 2 25.0-120 2.26 30 Hexachlorobenzene 0.778 ND ND ND 61.1 60.0 2 27.0-120 1.27 28 Hexachloro-1,3-butadiene 0.778 ND ND ND 56.3 52.5 2 10.0-120 6.52 38 Hexachlorocyclopentadiene 0.778 ND ND ND 0.000 5.80 2 10.0-120 J6 J6 200 40 Hexachloroethane 0.778 ND ND ND 41.5 34.3 2 10.0-120 18.3 40 Indeno(1,2,3-cd)pyrene 0.778 ND 0.550 0.533 70.7 68.2 2 10.0-120 3.11 32 Isophorone 0.778 ND ND ND 59.8 56.2 2 13.0-120 5.59 34 1 Cp 2 Tc 3 Ss 4 Cn 5 Sr 6 Qc 7 Gl 8 Al 9 Sc ACCOUNT:PROJECT:SDG:DATE/TIME:PAGE: Tetra Tech Inc. - UT L1540996 10/22/22 11:13 38 of 42 ACCOUNT:PROJECT:SDG:DATE/TIME:PAGE: Tetra Tech Inc. - UT L1540996 10/24/22 14:09 38 of 42 QUALITY CONTROL SUMMARYWG1938242 Semi Volatile Organic Compounds (GC/MS) by Method 8270C L1540996-01,02,03 L1540973-02 Original Sample (OS) • Matrix Spike (MS) • Matrix Spike Duplicate (MSD) (OS) L1540973-02 10/10/22 23:18 • (MS) R3846958-1 10/10/22 23:41 • (MSD) R3846958-2 10/11/22 00:05 Spike Amount (dry) Original Result (dry)MS Result (dry)MSD Result (dry)MS Rec. MSD Rec. Dilution Rec. Limits MS Qualifier MSD Qualifier RPD RPD Limits Analyte mg/kg mg/kg mg/kg mg/kg %%%%% Naphthalene 0.778 ND 0.471 0.451 60.5 57.7 2 10.0-120 4.18 35 Nitrobenzene 0.778 ND ND ND 60.2 56.0 2 10.0-120 6.64 36 n-Nitrosodimethylamine 0.778 ND ND ND 60.2 56.8 2 10.0-127 5.28 40 n-Nitrosodiphenylamine 0.778 ND ND ND 60.2 61.4 2 17.0-120 2.54 29 n-Nitrosodi-n-propylamine 0.778 ND ND ND 60.7 57.5 2 10.0-120 4.70 37 Phenanthrene 0.778 ND 0.540 0.515 69.5 65.8 2 17.0-120 4.79 31 Benzylbutyl phthalate 0.778 ND ND ND 90.4 83.7 2 23.0-120 7.09 30 Bis(2-ethylhexyl)phthalate 0.778 ND ND ND 58.0 56.0 2 17.0-126 1.84 30 Di-n-butyl phthalate 0.778 ND ND ND 78.0 75.7 2 30.0-120 2.41 29 Diethyl phthalate 0.778 ND ND ND 69.3 67.7 2 26.0-120 1.80 28 Dimethyl phthalate 0.778 ND ND ND 69.5 68.2 2 25.0-120 1.35 29 Di-n-octyl phthalate 0.778 ND ND ND 89.2 86.5 2 21.0-123 2.46 29 Pyrene 0.778 ND 0.530 0.510 68.1 65.2 2 16.0-121 3.70 32 1,2,4-Trichlorobenzene 0.778 ND ND ND 60.2 55.7 2 12.0-120 7.19 37 4-Chloro-3-methylphenol 0.778 ND ND ND 70.0 69.4 2 15.0-120 0.221 30 2-Chlorophenol 0.778 ND ND ND 66.6 63.5 2 15.0-120 4.03 37 2,4-Dichlorophenol 0.778 ND ND ND 70.1 66.6 2 20.0-120 4.51 31 2,4-Dimethylphenol 0.778 ND ND ND 65.5 62.2 2 10.0-120 4.59 33 4,6-Dinitro-2-methylphenol 0.778 ND ND ND 61.9 49.1 2 10.0-120 22.5 39 2,4-Dinitrophenol 0.778 ND ND ND 55.1 46.0 2 10.0-121 17.4 40 2-Nitrophenol 0.778 ND ND ND 75.4 69.5 2 12.0-120 7.45 39 4-Nitrophenol 0.778 ND ND ND 83.4 80.2 2 10.0-137 3.40 32 Pentachlorophenol 0.778 ND ND ND 70.4 68.8 2 10.0-160 1.77 31 Phenol 0.778 ND ND ND 67.8 63.5 2 12.0-120 5.88 38 2,4,6-Trichlorophenol 0.778 ND ND ND 70.1 69.7 2 19.0-120 0.000 32 (S) Nitrobenzene-d5 59.4 54.8 10.0-122 (S) 2-Fluorobiphenyl 60.1 55.4 15.0-120 (S) p-Terphenyl-d14 54.2 57.5 10.0-120 (S) Phenol-d5 66.3 60.9 10.0-120 (S) 2-Fluorophenol 71.4 64.5 12.0-120 (S) 2,4,6-Tribromophenol 66.9 64.0 10.0-127 1 Cp 2 Tc 3 Ss 4 Cn 5 Sr 6 Qc 7 Gl 8 Al 9 Sc ACCOUNT:PROJECT:SDG:DATE/TIME:PAGE: Tetra Tech Inc. - UT L1540996 10/22/22 11:13 39 of 42 ACCOUNT:PROJECT:SDG:DATE/TIME:PAGE: Tetra Tech Inc. - UT L1540996 10/24/22 14:09 39 of 42 GLOSSARY OF TERMS Guide to Reading and Understanding Your Laboratory Report The information below is designed to better explain the various terms used in your report of analytical results from the Laboratory. This is not intended as a comprehensive explanation, and if you have additional questions please contact your project representative. Results Disclaimer - Information that may be provided by the customer, and contained within this report, include Permit Limits, Project Name, Sample ID, Sample Matrix, Sample Preservation, Field Blanks, Field Spikes, Field Duplicates, On-Site Data, Sampling Collection Dates/Times, and Sampling Location. Results relate to the accuracy of this information provided, and as the samples are received. Abbreviations and Definitions (dry)Results are reported based on the dry weight of the sample. [this will only be present on a dry report basis for soils]. MDL Method Detection Limit. ND Not detected at the Reporting Limit (or MDL where applicable). RDL Reported Detection Limit. RDL (dry)Reported Detection Limit. Rec.Recovery. RPD Relative Percent Difference. SDG Sample Delivery Group. (S) Surrogate (Surrogate Standard) - Analytes added to every blank, sample, Laboratory Control Sample/Duplicate and Matrix Spike/Duplicate; used to evaluate analytical efficiency by measuring recovery. Surrogates are not expected to be detected in all environmental media. U Not detected at the Reporting Limit (or MDL where applicable). Analyte The name of the particular compound or analysis performed. Some Analyses and Methods will have multiple analytes reported. Dilution If the sample matrix contains an interfering material, the sample preparation volume or weight values differ from the standard, or if concentrations of analytes in the sample are higher than the highest limit of concentration that the laboratory can accurately report, the sample may be diluted for analysis. If a value different than 1 is used in this field, the result reported has already been corrected for this factor. Limits These are the target % recovery ranges or % difference value that the laboratory has historically determined as normal for the method and analyte being reported. Successful QC Sample analysis will target all analytes recovered or duplicated within these ranges. Original Sample The non-spiked sample in the prep batch used to determine the Relative Percent Difference (RPD) from a quality control sample. The Original Sample may not be included within the reported SDG. Qualifier This column provides a letter and/or number designation that corresponds to additional information concerning the result reported. If a Qualifier is present, a definition per Qualifier is provided within the Glossary and Definitions page and potentially a discussion of possible implications of the Qualifier in the Case Narrative if applicable. Result The actual analytical final result (corrected for any sample specific characteristics) reported for your sample. If there was no measurable result returned for a specific analyte, the result in this column may state “ND” (Not Detected) or “BDL” (Below Detectable Levels). The information in the results column should always be accompanied by either an MDL (Method Detection Limit) or RDL (Reporting Detection Limit) that defines the lowest value that the laboratory could detect or report for this analyte. Uncertainty (Radiochemistry)Confidence level of 2 sigma. Case Narrative (Cn) A brief discussion about the included sample results, including a discussion of any non-conformances to protocol observed either at sample receipt by the laboratory from the field or during the analytical process. If present, there will be a section in the Case Narrative to discuss the meaning of any data qualifiers used in the report. Quality Control Summary (Qc) This section of the report includes the results of the laboratory quality control analyses required by procedure or analytical methods to assist in evaluating the validity of the results reported for your samples. These analyses are not being performed on your samples typically, but on laboratory generated material. Sample Chain of Custody (Sc) This is the document created in the field when your samples were initially collected. This is used to verify the time and date of collection, the person collecting the samples, and the analyses that the laboratory is requested to perform. This chain of custody also documents all persons (excluding commercial shippers) that have had control or possession of the samples from the time of collection until delivery to the laboratory for analysis. Sample Results (Sr) This section of your report will provide the results of all testing performed on your samples. These results are provided by sample ID and are separated by the analyses performed on each sample. The header line of each analysis section for each sample will provide the name and method number for the analysis reported. Sample Summary (Ss)This section of the Analytical Report defines the specific analyses performed for each sample ID, including the dates and times of preparation and/or analysis. Qualifier Description B The same analyte is found in the associated blank. J The identification of the analyte is acceptable; the reported value is an estimate. J3 The associated batch QC was outside the established quality control range for precision. J4 The associated batch QC was outside the established quality control range for accuracy. J5 The sample matrix interfered with the ability to make any accurate determination; spike value is high. J6 The sample matrix interfered with the ability to make any accurate determination; spike value is low. J7 Surrogate recovery cannot be used for control limit evaluation due to dilution. 1 Cp 2 Tc 3 Ss 4 Cn 5 Sr 6 Qc 7 Gl 8 Al 9 Sc ACCOUNT:PROJECT:SDG:DATE/TIME:PAGE: Tetra Tech Inc. - UT L1540996 10/22/22 11:13 40 of 42 ACCOUNT:PROJECT:SDG:DATE/TIME:PAGE: Tetra Tech Inc. - UT L1540996 10/24/22 14:09 40 of 42 Pace Analytical National 12065 Lebanon Rd Mount Juliet, TN 37122 Alabama 40660 Nebraska NE-OS-15-05 Alaska 17-026 Nevada TN000032021-1 Arizona AZ0612 New Hampshire 2975 Arkansas 88-0469 New Jersey–NELAP TN002 California 2932 New Mexico ¹TN00003 Colorado TN00003 New York 11742 Connecticut PH-0197 North Carolina Env375 Florida E87487 North Carolina ¹DW21704 Georgia NELAP North Carolina ³41 Georgia ¹923 North Dakota R-140 Idaho TN00003 Ohio–VAP CL0069 Illinois 200008 Oklahoma 9915 Indiana C-TN-01 Oregon TN200002 Iowa 364 Pennsylvania 68-02979 Kansas E-10277 Rhode Island LAO00356 Kentucky ¹ ⁶KY90010 South Carolina 84004002 Kentucky ²16 South Dakota n/a Louisiana AI30792 Tennessee ¹ ⁴2006 Louisiana LA018 Texas T104704245-20-18 Maine TN00003 Texas ⁵LAB0152 Maryland 324 Utah TN000032021-11 Massachusetts M-TN003 Vermont VT2006 Michigan 9958 Virginia 110033 Minnesota 047-999-395 Washington C847 Mississippi TN00003 West Virginia 233 Missouri 340 Wisconsin 998093910 Montana CERT0086 Wyoming A2LA A2LA – ISO 17025 1461.01 AIHA-LAP,LLC EMLAP 100789 A2LA – ISO 17025 ⁵1461.02 DOD 1461.01 Canada 1461.01 USDA P330-15-00234 EPA–Crypto TN00003 ACCREDITATIONS & LOCATIONS ¹ Drinking Water ² Underground Storage Tanks ³ Aquatic Toxicity ⁴ Chemical/Microbiological ⁵ Mold ⁶ Wastewater n/a Accreditation not applicable * Not all certifications held by the laboratory are applicable to the results reported in the attached report. * Accreditation is only applicable to the test methods specified on each scope of accreditation held by Pace Analytical. 1 Cp 2 Tc 3 Ss 4 Cn 5 Sr 6 Qc 7 Gl 8 Al 9 Sc ACCOUNT:PROJECT:SDG:DATE/TIME:PAGE: Tetra Tech Inc. - UT L1540996 10/22/22 11:13 41 of 42 ACCOUNT:PROJECT:SDG:DATE/TIME:PAGE: Tetra Tech Inc. - UT L1540996 10/24/22 14:09 41 of 42 Appendix A-3 Ogden and UDEQ Samples The analyses presented on this report were performed in accordance with the National Environmental Laboratory Accreditation Program (NELAP) unless noted in the comments, flags, or case narrative. If the report is to be used for regulatory compliance, it should be presented in its entirety, and not be altered. Client Service Contact: 801.262.7299 Utah Division of Water Quality Attn: Danny Ryan 195 North 1950 West Salt Lake City, UT 84116 Work Order: 22H1973 Project: [none] 8/23/2022 Approved By: Reed Hendricks, Director of Operations 9632 South 500 West Sandy, Utah 84070 Serving the Intermountain West since 1953 801.262.7299 Main 866.792.0093 Fax www.ChemtechFord.com Page 1 of 14 xx Chemtech-Ford Laboratories Serving the Intermountain West Since 1953 Certificate of Analysis 9632 South 500 West Sandy, UT 84070 O:(801) 262-7299 F: (866) 792-0093 www.ChemtechFord.com Utah Division of Water Quality Danny Ryan 195 North 1950 West Salt Lake City, UT 84116 PO#: Receipt: Date Reported: Project Name: 8/18/22 17:18 @ 3.4 °C 8/23/2022 [none] Sample ID: RE Inlet Lab ID: 22H1973-01Matrix: Water Flag(s)Units Analysis Date/Time Date Sampled: 8/18/22 13:33 Preparation Date/Time Sampled By: Daniel Ryan Minimum Reporting Limit MethodResult Inorganic mg/L BOD-BL8/23/22 14:078/18/22 18:205SM 5210 B2810Biochemical Oxygen Demand mg/L 8/23/228/23/22100Hach 80008050Chemical Oxygen Demand mg/L 8/22/228/19/226EPA 1664A24Oil & Grease (HEM) pH Units SPH8/19/22 17:028/19/22 15:500.1 SM 4500 H-B6.7pH mg/L 8/19/228/19/224SM 2540 D52Total Suspended Solids (TSS) Metals mg/L 8/23/228/22/220.05 EPA 6010B/C/D0.12Arsenic, Total mg/L 8/23/228/22/220.005 EPA 6010B/C/D0.507Barium, Total mg/L 8/23/228/22/220.005 EPA 6010B/C/DNDCadmium, Total mg/L 8/23/228/22/220.005 EPA 6010B/C/D0.005Chromium, Total mg/L 8/23/228/22/220.02 EPA 6010B/C/DNDLead, Total mg/L 8/22/228/19/220.0002 EPA 7470ANDMercury, Total mg/L 8/23/228/22/220.05 EPA 6010B/C/D0.04Selenium, Total mg/L 8/23/228/22/220.005 EPA 6010B/C/DNDSilver, Total Volatile Organic Compounds mg/L 8/22/228/22/220.005 EPA 8260D /5030ANDBenzene mg/L 8/22/228/22/220.012 EPA 8260D /5030ANDEthylbenzene mg/L 8/22/228/22/220.012 EPA 8260D /5030ANDNaphthalene mg/L 8/22/228/22/220.012 EPA 8260D /5030A0.019Toluene mg/L 8/22/228/22/220.012 EPA 8260D /5030ANDXylenes, total Project Name: [none]CtF WO#: 22H1973 www.ChemtechFord.com Page 2 of 13Page 2 of 14 xx Chemtech-Ford Laboratories Serving the Intermountain West Since 1953 Certificate of Analysis 9632 South 500 West Sandy, UT 84070 O:(801) 262-7299 F: (866) 792-0093 www.ChemtechFord.com Utah Division of Water Quality Danny Ryan 195 North 1950 West Salt Lake City, UT 84116 PO#: Receipt: Date Reported: Project Name: 8/18/22 17:18 @ 3.4 °C 8/23/2022 [none] Sample ID: RE Storm Lab ID: 22H1973-02Matrix: Water Flag(s)Units Analysis Date/Time Date Sampled: 8/18/22 13:40 Preparation Date/Time Sampled By: Daniel Ryan Minimum Reporting Limit MethodResult Inorganic mg/L BOD-BL8/23/22 14:118/18/22 18:205SM 5210 B750Biochemical Oxygen Demand mg/L 8/23/228/23/2220Hach 80001100Chemical Oxygen Demand mg/L 8/22/228/19/225EPA 1664A5Oil & Grease (HEM) pH Units SPH8/19/22 17:048/19/22 15:500.1 SM 4500 H-B6.9pH mg/L 8/19/228/19/224SM 2540 D27Total Suspended Solids (TSS) Metals mg/L 8/23/228/22/220.05 EPA 6010B/C/D0.10Arsenic, Total mg/L 8/23/228/22/220.005 EPA 6010B/C/D0.907Barium, Total mg/L 8/23/228/22/220.005 EPA 6010B/C/DNDCadmium, Total mg/L 8/23/228/22/220.005 EPA 6010B/C/D0.006Chromium, Total mg/L 8/23/228/22/220.02 EPA 6010B/C/DNDLead, Total mg/L 8/22/228/19/220.0002 EPA 7470ANDMercury, Total mg/L 8/23/228/22/220.05 EPA 6010B/C/D0.01Selenium, Total mg/L 8/23/228/22/220.005 EPA 6010B/C/DNDSilver, Total Volatile Organic Compounds mg/L 8/22/228/22/220.005 EPA 8260D /5030ANDBenzene mg/L 8/22/228/22/220.012 EPA 8260D /5030ANDEthylbenzene mg/L 8/22/228/22/220.012 EPA 8260D /5030ANDNaphthalene mg/L 8/22/228/22/220.012 EPA 8260D /5030A0.057Toluene mg/L 8/22/228/22/220.012 EPA 8260D /5030ANDXylenes, total Project Name: [none]CtF WO#: 22H1973 www.ChemtechFord.com Page 3 of 13Page 3 of 14 xx Chemtech-Ford Laboratories Serving the Intermountain West Since 1953 Certificate of Analysis 9632 South 500 West Sandy, UT 84070 O:(801) 262-7299 F: (866) 792-0093 www.ChemtechFord.com Utah Division of Water Quality Danny Ryan 195 North 1950 West Salt Lake City, UT 84116 PO#: Receipt: Date Reported: Project Name: 8/18/22 17:18 @ 3.4 °C 8/23/2022 [none] Sample ID: AS Stream Lab ID: 22H1973-03Matrix: Water Flag(s)Units Analysis Date/Time Date Sampled: 8/18/22 14:20 Preparation Date/Time Sampled By: Daniel Ryan Minimum Reporting Limit MethodResult Inorganic mg/L BOD-BL8/23/22 14:128/18/22 18:205SM 5210 B434Biochemical Oxygen Demand mg/L 8/23/228/23/2210Hach 8000696Chemical Oxygen Demand mg/L 8/22/228/19/225EPA 1664ANDOil & Grease (HEM) pH Units SPH8/19/22 17:058/19/22 15:500.1 SM 4500 H-B7.4pH mg/L 8/19/228/19/2240SM 2540 D396Total Suspended Solids (TSS) Metals mg/L 8/23/228/22/220.05 EPA 6010B/C/DNDArsenic, Total mg/L 8/23/228/22/220.005 EPA 6010B/C/D0.631Barium, Total mg/L 8/23/228/22/220.005 EPA 6010B/C/DNDCadmium, Total mg/L 8/23/228/22/220.005 EPA 6010B/C/D0.009Chromium, Total mg/L 8/23/228/22/220.02 EPA 6010B/C/D0.01Lead, Total mg/L 8/22/228/19/220.0002 EPA 7470ANDMercury, Total mg/L 8/23/228/22/220.05 EPA 6010B/C/D0.007Selenium, Total mg/L 8/23/228/22/220.005 EPA 6010B/C/DNDSilver, Total Volatile Organic Compounds mg/L 8/22/228/22/220.005 EPA 8260D /5030ANDBenzene mg/L 8/22/228/22/220.012 EPA 8260D /5030ANDEthylbenzene mg/L 8/22/228/22/220.012 EPA 8260D /5030ANDNaphthalene mg/L 8/22/228/22/220.012 EPA 8260D /5030ANDToluene mg/L 8/22/228/22/220.012 EPA 8260D /5030ANDXylenes, total Project Name: [none]CtF WO#: 22H1973 www.ChemtechFord.com Page 4 of 13Page 4 of 14 xx Chemtech-Ford Laboratories Serving the Intermountain West Since 1953 Certificate of Analysis 9632 South 500 West Sandy, UT 84070 O:(801) 262-7299 F: (866) 792-0093 www.ChemtechFord.com Utah Division of Water Quality Danny Ryan 195 North 1950 West Salt Lake City, UT 84116 PO#: Receipt: Date Reported: Project Name: 8/18/22 17:18 @ 3.4 °C 8/23/2022 [none] Sample ID: 2550 South Lab ID: 22H1973-04Matrix: Water Flag(s)Units Analysis Date/Time Date Sampled: 8/18/22 14:45 Preparation Date/Time Sampled By: Daniel Ryan Minimum Reporting Limit MethodResult Inorganic mg/L BOD-BL8/23/22 14:158/18/22 18:205SM 5210 B300Biochemical Oxygen Demand mg/L 8/23/228/23/2210Hach 8000504Chemical Oxygen Demand mg/L 8/22/228/19/225EPA 1664ANDOil & Grease (HEM) pH Units SPH8/19/22 17:068/19/22 15:500.1 SM 4500 H-B7.1pH mg/L 8/19/228/19/2210SM 2540 D267Total Suspended Solids (TSS) Metals mg/L 8/23/228/22/220.05 EPA 6010B/C/DNDArsenic, Total mg/L 8/23/228/22/220.005 EPA 6010B/C/D0.620Barium, Total mg/L 8/23/228/22/220.005 EPA 6010B/C/DNDCadmium, Total mg/L 8/23/228/22/220.005 EPA 6010B/C/D0.02Chromium, Total mg/L 8/23/228/22/220.02 EPA 6010B/C/D0.02Lead, Total mg/L 8/22/228/19/220.0002 EPA 7470ANDMercury, Total mg/L 8/23/228/22/220.05 EPA 6010B/C/D0.008Selenium, Total mg/L 8/23/228/22/220.005 EPA 6010B/C/DNDSilver, Total Volatile Organic Compounds mg/L 8/22/228/22/220.005 EPA 8260D /5030ANDBenzene mg/L 8/22/228/22/220.012 EPA 8260D /5030ANDEthylbenzene mg/L 8/22/228/22/220.012 EPA 8260D /5030ANDNaphthalene mg/L 8/22/228/22/220.012 EPA 8260D /5030ANDToluene mg/L 8/22/228/22/220.012 EPA 8260D /5030ANDXylenes, total Project Name: [none]CtF WO#: 22H1973 www.ChemtechFord.com Page 5 of 13Page 5 of 14 xx Chemtech-Ford Laboratories Serving the Intermountain West Since 1953 Certificate of Analysis 9632 South 500 West Sandy, UT 84070 O:(801) 262-7299 F: (866) 792-0093 www.ChemtechFord.com Utah Division of Water Quality Danny Ryan 195 North 1950 West Salt Lake City, UT 84116 PO#: Receipt: Date Reported: Project Name: 8/18/22 17:18 @ 3.4 °C 8/23/2022 [none] Sample ID: 21st South Lab ID: 22H1973-05Matrix: Water Flag(s)Units Analysis Date/Time Date Sampled: 8/18/22 15:45 Preparation Date/Time Sampled By: Daniel Ryan Minimum Reporting Limit MethodResult Inorganic mg/L BOD-BL8/23/22 14:198/18/22 18:205SM 5210 B11Biochemical Oxygen Demand mg/L 8/23/228/23/2210Hach 800051Chemical Oxygen Demand mg/L 8/22/228/19/226EPA 1664ANDOil & Grease (HEM) pH Units SPH8/19/22 17:108/19/22 15:500.1 SM 4500 H-B7.9pH mg/L 8/19/228/19/224SM 2540 D10Total Suspended Solids (TSS) Metals mg/L 8/23/228/22/220.05 EPA 6010B/C/D0.06Arsenic, Total mg/L 8/23/228/22/220.005 EPA 6010B/C/D0.364Barium, Total mg/L 8/23/228/22/220.005 EPA 6010B/C/DNDCadmium, Total mg/L 8/23/228/22/220.005 EPA 6010B/C/DNDChromium, Total mg/L 8/23/228/22/220.02 EPA 6010B/C/DNDLead, Total mg/L 8/22/228/19/220.0002 EPA 7470ANDMercury, Total mg/L 8/23/228/22/220.05 EPA 6010B/C/D0.01Selenium, Total mg/L 8/23/228/22/220.005 EPA 6010B/C/DNDSilver, Total Volatile Organic Compounds mg/L 8/22/228/22/220.005 EPA 8260D /5030ANDBenzene mg/L 8/22/228/22/220.012 EPA 8260D /5030ANDEthylbenzene mg/L 8/22/228/22/220.012 EPA 8260D /5030ANDNaphthalene mg/L 8/22/228/22/220.012 EPA 8260D /5030ANDToluene mg/L 8/22/228/22/220.012 EPA 8260D /5030ANDXylenes, total Project Name: [none]CtF WO#: 22H1973 www.ChemtechFord.com Page 6 of 13Page 6 of 14 xx Chemtech-Ford Laboratories Serving the Intermountain West Since 1953 Certificate of Analysis 9632 South 500 West Sandy, UT 84070 O:(801) 262-7299 F: (866) 792-0093 www.ChemtechFord.com Utah Division of Water Quality Danny Ryan 195 North 1950 West Salt Lake City, UT 84116 PO#: Receipt: Date Reported: Project Name: 8/18/22 17:18 @ 3.4 °C 8/23/2022 [none] Sample ID: Soil Sample #1 Lab ID: 22H1973-06Matrix: Solid Flag(s)Units Analysis Date/Time Date Sampled: 8/18/22 0:00 Preparation Date/Time Sampled By: Daniel Ryan Minimum Reporting Limit MethodResult Inorganic %8/22/228/19/220.1 SM 2540G74.2Total Solids Metals mg/kg dry J8/23/228/22/220.57 EPA 6010B/C/D0.31Antimony, Total mg/kg dry 8/23/228/22/222.86 EPA 6010B/C/D5.82Arsenic, Total mg/kg dry J8/23/228/22/220.715 EPA 6010B/C/D0.157Cadmium, Total mg/kg dry 8/23/228/22/220.143 EPA 6010B/C/D4.42Chromium, Total mg/kg dry 8/23/228/22/220.29 EPA 6010B/C/D1.24Cobalt, Total mg/kg dry 8/23/228/22/220.143 EPA 6010B/C/D15.4Copper, Total mg/kg dry 8/23/228/22/221.43 EPA 6010B/C/D3.04Lead, Total mg/kg dry 8/23/228/22/220.143 EPA 6010B/C/D70.9Manganese, Total mg/kg dry J8/22/228/19/220.03 EPA 7471A0.01Mercury, Total mg/kg dry 8/23/228/22/220.29 EPA 6010B/C/D1.12Molybdenum, Total mg/kg dry 8/23/228/22/220.143 EPA 6010B/C/D3.08Nickel, Total mg/kg dry J8/23/228/22/221.43 EPA 6010B/C/D0.31Selenium, Total mg/kg dry J8/23/228/22/220.143 EPA 6010B/C/D0.040Silver, Total mg/kg dry 8/23/228/22/220.57 EPA 6010B/C/DNDThallium, Total mg/kg dry 8/23/228/22/220.29 EPA 6010B/C/D4.49Vanadium, Total Semi-Volatile Compounds mg/kg dry 8/19/228/18/225.39 EPA 8270E/3550BND1,2,4-Trichlorobenzene mg/kg dry 8/19/228/18/225.39 EPA 8270E/3550BND1,2-Dichlorobenzene mg/kg dry 8/19/228/18/225.39 EPA 8270E/3550BND1,3-Dichlorobenzene mg/kg dry 8/19/228/18/225.39 EPA 8270E/3550BND1,4-Dichlorobenzene mg/kg dry 8/19/228/18/225.39 EPA 8270E/3550BND2,3,4,6-Tetrachlorophenol mg/kg dry 8/19/228/18/225.39 EPA 8270E/3550BND2,4,5-Trichlorophenol mg/kg dry 8/19/228/18/225.39 EPA 8270E/3550BND2,4,6-Trichlorophenol mg/kg dry 8/19/228/18/225.39 EPA 8270E/3550BND1-Methylnaphthalene mg/kg dry 8/19/228/18/225.39 EPA 8270E/3550BND2,4-Dichlorophenol mg/kg dry 8/19/228/18/225.39 EPA 8270E/3550BND2,4-Dimethylphenol mg/kg dry 8/19/228/18/2220.2 EPA 8270E/3550BNDBenzidine mg/kg dry 8/19/228/18/2210.8 EPA 8270E/3550BND2,4-Dinitrophenol mg/kg dry 8/19/228/18/225.39 EPA 8270E/3550BND2,4-Dinitrotoluene mg/kg dry J8/19/228/18/225.39 EPA 8270E/3550B1.83n-Octadecane mg/kg dry 8/19/228/18/225.39 EPA 8270E/3550BND2,6-Dichlorophenol mg/kg dry 8/19/228/18/225.39 EPA 8270E/3550BND2,6-Dinitrotoluene mg/kg dry 8/19/228/18/225.39 EPA 8270E/3550BNDn-Decane mg/kg dry 8/19/228/18/225.39 EPA 8270E/3550BND2,2'-Oxybis(1-Chloropropane) mg/kg dry 8/19/228/18/225.39 EPA 8270E/3550BND2-Chloronaphthalene Project Name: [none]CtF WO#: 22H1973 www.ChemtechFord.com Page 7 of 13Page 7 of 14 xx Chemtech-Ford Laboratories Serving the Intermountain West Since 1953 Certificate of Analysis 9632 South 500 West Sandy, UT 84070 O:(801) 262-7299 F: (866) 792-0093 www.ChemtechFord.com Utah Division of Water Quality Danny Ryan 195 North 1950 West Salt Lake City, UT 84116 PO#: Receipt: Date Reported: Project Name: 8/18/22 17:18 @ 3.4 °C 8/23/2022 [none] Sample ID: Soil Sample #1 (cont.) Lab ID: 22H1973-06Matrix: Solid Flag(s)Units Analysis Date/Time Date Sampled: 8/18/22 0:00 Preparation Date/Time Sampled By: Daniel Ryan Minimum Reporting Limit MethodResult Semi-Volatile Compounds (cont.) mg/kg dry 8/19/228/18/225.39 EPA 8270E/3550BNDDibenz (a,h) anthracene mg/kg dry 8/19/228/18/225.39 EPA 8270E/3550BNDBiphenyl mg/kg dry 8/19/228/18/225.39 EPA 8270E/3550BND2-Chlorophenol mg/kg dry 8/19/228/18/225.39 EPA 8270E/3550BND2-Methylnaphthalene mg/kg dry 8/19/228/18/225.39 EPA 8270E/3550BND2-Methylphenol mg/kg dry 8/19/228/18/225.39 EPA 8270E/3550BND2-Nitroaniline mg/kg dry 8/19/228/18/225.39 EPA 8270E/3550BND2-Nitrophenol mg/kg dry J8/19/228/18/225.39 EPA 8270E/3550B3.393 & 4-Methylphenol mg/kg dry 8/19/228/18/225.39 EPA 8270E/3550BND3,3´-Dichlorobenzidine mg/kg dry 8/19/228/18/2213.5 EPA 8270E/3550BND3-Nitroaniline mg/kg dry 8/19/228/18/225.39 EPA 8270E/3550BND4-Chloroaniline mg/kg dry 8/19/228/18/2210.8 EPA 8270E/3550BND4,6-Dinitro-2-methylphenol mg/kg dry 8/19/228/18/225.39 EPA 8270E/3550BND4-Bromophenyl phenyl ether mg/kg dry 8/19/228/18/225.39 EPA 8270E/3550BND4-Chloro-3-methylphenol mg/kg dry 8/19/228/18/225.39 EPA 8270E/3550BND4-Chlorophenyl Phenyl Ether mg/kg dry 8/19/228/18/2213.5 EPA 8270E/3550BND4-Nitroaniline mg/kg dry 8/19/228/18/2210.8 EPA 8270E/3550BND4-Nitrophenol mg/kg dry 8/19/228/18/225.39 EPA 8270E/3550BNDAcenaphthene mg/kg dry 8/19/228/18/225.39 EPA 8270E/3550BNDAcenaphthylene mg/kg dry 8/19/228/18/2210.8 EPA 8270E/3550BNDAniline mg/kg dry 8/19/228/18/225.39 EPA 8270E/3550BNDAnthracene mg/kg dry 8/19/228/18/225.39 EPA 8270E/3550BNDAzobenzene mg/kg dry 8/19/228/18/225.39 EPA 8270E/3550BNDBenzo (a) anthracene mg/kg dry 8/19/228/18/225.39 EPA 8270E/3550BNDBenzo (a) pyrene mg/kg dry 8/19/228/18/225.39 EPA 8270E/3550BNDBenzo (b) fluoranthene mg/kg dry 8/19/228/18/225.39 EPA 8270E/3550BNDBenzo (g,h,i) perylene mg/kg dry 8/19/228/18/225.39 EPA 8270E/3550BNDBenzo (k) fluoranthene mg/kg dry 8/19/228/18/2213.5 EPA 8270E/3550BNDBenzoic acid mg/kg dry 8/19/228/18/225.39 EPA 8270E/3550BNDBenzyl Alcohol mg/kg dry 8/19/228/18/225.39 EPA 8270E/3550BNDBis (2-chloroethoxy) Methane mg/kg dry 8/19/228/18/225.39 EPA 8270E/3550BNDBis (2-chloroethyl) Ether mg/kg dry J8/19/228/18/225.39 EPA 8270E/3550B1.11Bis (2-ethylhexyl) Phthalate mg/kg dry 8/19/228/18/225.39 EPA 8270E/3550BNDButylbenzylphthalate mg/kg dry 8/19/228/18/225.39 EPA 8270E/3550BNDCarbazole mg/kg dry 8/19/228/18/225.39 EPA 8270E/3550BNDChrysene mg/kg dry 8/19/228/18/225.39 EPA 8270E/3550BNDDibenzofuran mg/kg dry 8/19/228/18/225.39 EPA 8270E/3550BNDDiethylphthalate Project Name: [none]CtF WO#: 22H1973 www.ChemtechFord.com Page 8 of 13Page 8 of 14 xx Chemtech-Ford Laboratories Serving the Intermountain West Since 1953 Certificate of Analysis 9632 South 500 West Sandy, UT 84070 O:(801) 262-7299 F: (866) 792-0093 www.ChemtechFord.com Utah Division of Water Quality Danny Ryan 195 North 1950 West Salt Lake City, UT 84116 PO#: Receipt: Date Reported: Project Name: 8/18/22 17:18 @ 3.4 °C 8/23/2022 [none] Sample ID: Soil Sample #1 (cont.) Lab ID: 22H1973-06Matrix: Solid Flag(s)Units Analysis Date/Time Date Sampled: 8/18/22 0:00 Preparation Date/Time Sampled By: Daniel Ryan Minimum Reporting Limit MethodResult Semi-Volatile Compounds (cont.) mg/kg dry 8/19/228/18/225.39 EPA 8270E/3550BNDDimethyl phthalate mg/kg dry 8/19/228/18/225.39 EPA 8270E/3550BNDDi-n-butylphthalate mg/kg dry J8/19/228/18/225.39 EPA 8270E/3550B1.12Di-n-Octylphthalate mg/kg dry 8/19/228/18/225.39 EPA 8270E/3550BNDDiphenylamine mg/kg dry 8/19/228/18/225.39 EPA 8270E/3550BNDFluoranthene mg/kg dry 8/19/228/18/225.39 EPA 8270E/3550BNDFluorene mg/kg dry 8/19/228/18/225.39 EPA 8270E/3550BNDHexachlorobenzene mg/kg dry 8/19/228/18/225.39 EPA 8270E/3550BNDHexachlorobutadiene mg/kg dry 8/19/228/18/225.39 EPA 8270E/3550BNDHexachlorocyclopentadiene mg/kg dry 8/19/228/18/225.39 EPA 8270E/3550BNDHexachloroethane mg/kg dry 8/19/228/18/225.39 EPA 8270E/3550BNDIndeno (1,2,3-cd) pyrene mg/kg dry 8/19/228/18/225.39 EPA 8270E/3550BNDIsophorone mg/kg dry 8/19/228/18/225.39 EPA 8270E/3550BNDNaphthalene mg/kg dry 8/19/228/18/225.39 EPA 8270E/3550BNDNitrobenzene mg/kg dry 8/19/228/18/2210.8 EPA 8270E/3550BNDN-Nitrosodimethylamine mg/kg dry 8/19/228/18/225.39 EPA 8270E/3550BNDN-Nitrosodi-n-propylamine mg/kg dry 8/19/228/18/225.39 EPA 8270E/3550BNDN-Nitrosodiphenylamine mg/kg dry 8/19/228/18/225.39 EPA 8270E/3550BNDPentachlorophenol mg/kg dry 8/19/228/18/225.39 EPA 8270E/3550BNDPhenanthrene mg/kg dry 8/19/228/18/225.39 EPA 8270E/3550B6.04Phenol mg/kg dry 8/19/228/18/225.39 EPA 8270E/3550BNDPyrene Volatile Organic Compounds mg/kg dry 8/23/228/23/220.03 EPA 8260D /5030AND1,1,1,2-Tetrachloroethane mg/kg dry 8/23/228/23/220.03 EPA 8260D /5030AND1,1,1-Trichloroethane mg/kg dry 8/23/228/23/220.03 EPA 8260D /5030AND1,1,2,2-Tetrachloroethane mg/kg dry 8/23/228/23/220.03 EPA 8260D /5030AND1,1,2-Trichloroethane mg/kg dry 8/23/228/23/220.03 EPA 8260D /5030AND1,1,2-Trichlorotrifluoroethane mg/kg dry 8/23/228/23/220.03 EPA 8260D /5030AND1,1-Dichloroethane mg/kg dry 8/23/228/23/220.03 EPA 8260D /5030AND1,1-Dichloroethene mg/kg dry 8/23/228/23/220.03 EPA 8260D /5030AND1,1-Dichloropropene mg/kg dry 8/23/228/23/220.03 EPA 8260D /5030AND1,2,3-Trichlorobenzene mg/kg dry 8/23/228/23/220.03 EPA 8260D /5030AND1,2,3-Trichloropropane mg/kg dry 8/23/228/23/220.03 EPA 8260D /5030AND1,2,4-Trichlorobenzene mg/kg dry 8/23/228/23/220.03 EPA 8260D /5030A0.071,2,4-Trimethylbenzene mg/kg dry 8/23/228/23/220.03 EPA 8260D /5030AND1,2-Dibromo-3-chloropropane mg/kg dry 8/23/228/23/220.03 EPA 8260D /5030AND1,2-Dibromoethane (EDB) mg/kg dry 8/23/228/23/220.03 EPA 8260D /5030AND1,2-Dichlorobenzene Project Name: [none]CtF WO#: 22H1973 www.ChemtechFord.com Page 9 of 13Page 9 of 14 xx Chemtech-Ford Laboratories Serving the Intermountain West Since 1953 Certificate of Analysis 9632 South 500 West Sandy, UT 84070 O:(801) 262-7299 F: (866) 792-0093 www.ChemtechFord.com Utah Division of Water Quality Danny Ryan 195 North 1950 West Salt Lake City, UT 84116 PO#: Receipt: Date Reported: Project Name: 8/18/22 17:18 @ 3.4 °C 8/23/2022 [none] Sample ID: Soil Sample #1 (cont.) Lab ID: 22H1973-06Matrix: Solid Flag(s)Units Analysis Date/Time Date Sampled: 8/18/22 0:00 Preparation Date/Time Sampled By: Daniel Ryan Minimum Reporting Limit MethodResult Volatile Organic Compounds (cont.) mg/kg dry 8/23/228/23/220.03 EPA 8260D /5030AND1,2-Dichloroethane mg/kg dry 8/23/228/23/220.03 EPA 8260D /5030AND1,2-Dichloropropane mg/kg dry 8/23/228/23/220.03 EPA 8260D /5030A0.031,3,5-Trimethylbenzene mg/kg dry 8/23/228/23/220.03 EPA 8260D /5030AND1,3-Dichlorobenzene mg/kg dry 8/23/228/23/220.03 EPA 8260D /5030AND1,3-Dichloropropane mg/kg dry 8/23/228/23/220.03 EPA 8260D /5030AND1,4-Dichlorobenzene mg/kg dry 8/23/228/23/220.03 EPA 8260D /5030AND2,2-Dichloropropane mg/kg dry 8/23/228/23/220.03 EPA 8260D /5030AND2-Chlorotoluene mg/kg dry J-LOW8/23/228/23/220.29 EPA 8260D /5030AND2-Nitropropane mg/kg dry 8/23/228/23/220.03 EPA 8260D /5030AND4-Chlorotoluene mg/kg dry 8/23/228/23/220.03 EPA 8260D /5030A0.05p-Isopropyltoluene mg/kg dry 8/23/228/23/220.29 EPA 8260D /5030A4.86Acetone mg/kg dry 8/23/228/23/220.01 EPA 8260D /5030ANDBenzene mg/kg dry 8/23/228/23/220.03 EPA 8260D /5030ANDBromobenzene mg/kg dry 8/23/228/23/220.03 EPA 8260D /5030ANDBromochloromethane mg/kg dry 8/23/228/23/220.03 EPA 8260D /5030ANDBromodichloromethane mg/kg dry 8/23/228/23/220.03 EPA 8260D /5030ANDBromoform mg/kg dry J-LOW8/23/228/23/220.03 EPA 8260D /5030ANDBromomethane mg/kg dry J8/23/228/23/220.03 EPA 8260D /5030A0.02Carbon Disulfide mg/kg dry 8/23/228/23/220.03 EPA 8260D /5030ANDCarbon Tetrachloride mg/kg dry 8/23/228/23/220.03 EPA 8260D /5030ANDChlorobenzene mg/kg dry 8/23/228/23/220.03 EPA 8260D /5030ANDChloroethane mg/kg dry 8/23/228/23/220.03 EPA 8260D /5030ANDChloroform mg/kg dry 8/23/228/23/220.03 EPA 8260D /5030ANDChloromethane mg/kg dry 8/23/228/23/220.03 EPA 8260D /5030ANDcis-1,2-Dichloroethene mg/kg dry 8/23/228/23/220.03 EPA 8260D /5030ANDcis-1,3-Dichloropropene mg/kg dry 8/23/228/23/220.58 EPA 8260D /5030ANDCyclohexanone mg/kg dry 8/23/228/23/220.03 EPA 8260D /5030ANDDibromochloromethane mg/kg dry 8/23/228/23/220.03 EPA 8260D /5030ANDDibromomethane mg/kg dry 8/23/228/23/220.03 EPA 8260D /5030ANDDichlorodifluoromethane mg/kg dry 8/23/228/23/220.03 EPA 8260D /5030ANDEthyl Acetate mg/kg dry 8/23/228/23/220.03 EPA 8260D /5030ANDEthyl Ether mg/kg dry J8/23/228/23/220.03 EPA 8260D /5030A0.01Ethylbenzene mg/kg dry 8/23/228/23/220.03 EPA 8260D /5030ANDHexachlorobutadiene mg/kg dry J-LOW8/23/228/23/220.58 EPA 8260D /5030A1.81Isobutanol mg/kg dry 8/23/228/23/220.03 EPA 8260D /5030ANDIsopropylbenzene mg/kg dry 8/23/228/23/220.29 EPA 8260D /5030A5.00Methyl Ethyl Ketone Project Name: [none]CtF WO#: 22H1973 www.ChemtechFord.com Page 10 of 13Page 10 of 14 xx Chemtech-Ford Laboratories Serving the Intermountain West Since 1953 Certificate of Analysis 9632 South 500 West Sandy, UT 84070 O:(801) 262-7299 F: (866) 792-0093 www.ChemtechFord.com Utah Division of Water Quality Danny Ryan 195 North 1950 West Salt Lake City, UT 84116 PO#: Receipt: Date Reported: Project Name: 8/18/22 17:18 @ 3.4 °C 8/23/2022 [none] Sample ID: Soil Sample #1 (cont.) Lab ID: 22H1973-06Matrix: Solid Flag(s)Units Analysis Date/Time Date Sampled: 8/18/22 0:00 Preparation Date/Time Sampled By: Daniel Ryan Minimum Reporting Limit MethodResult Volatile Organic Compounds (cont.) mg/kg dry 8/23/228/23/220.29 EPA 8260D /5030A3.05Methyl Isobutyl Ketone mg/kg dry 8/23/228/23/220.58 EPA 8260D /5030ANDMethylene Chloride mg/kg dry 8/23/228/23/220.03 EPA 8260D /5030ANDMethyl-tert-butyl ether (MTBE) mg/kg dry 8/23/228/23/220.03 EPA 8260D /5030A0.04Naphthalene mg/kg dry J-LOW8/23/228/23/220.58 EPA 8260D /5030A37.2n-Butyl Alcohol mg/kg dry 8/23/228/23/220.03 EPA 8260D /5030ANDn-Butylbenzene mg/kg dry 8/23/228/23/220.58 EPA 8260D /5030ANDNitrobenzene mg/kg dry 8/23/228/23/220.03 EPA 8260D /5030ANDn-Propyl Benzene mg/kg dry 8/23/228/23/220.03 EPA 8260D /5030ANDsec-Butyl Benzene mg/kg dry 8/23/228/23/220.03 EPA 8260D /5030ANDStyrene mg/kg dry 8/23/228/23/220.03 EPA 8260D /5030ANDtert-Butylbenzene mg/kg dry 8/23/228/23/220.03 EPA 8260D /5030ANDTetrachloroethene mg/kg dry 8/23/228/23/220.03 EPA 8260D /5030A0.17Toluene mg/kg dry 8/23/228/23/220.03 EPA 8260D /5030ANDtrans-1,2-Dichloroethene mg/kg dry 8/23/228/23/220.03 EPA 8260D /5030ANDtrans-1,3-Dichloropropene mg/kg dry 8/23/228/23/220.03 EPA 8260D /5030ANDTrichloroethene mg/kg dry 8/23/228/23/220.03 EPA 8260D /5030ANDTrichlorofluoromethane mg/kg dry 8/23/228/23/220.03 EPA 8260D /5030ANDVinyl Chloride mg/kg dry 8/23/228/23/220.03 EPA 8260D /5030A0.09Xylenes, total Project Name: [none]CtF WO#: 22H1973 www.ChemtechFord.com Page 11 of 13Page 11 of 14 xx Chemtech-Ford Laboratories Serving the Intermountain West Since 1953 Certificate of Analysis 9632 South 500 West Sandy, UT 84070 O:(801) 262-7299 F: (866) 792-0093 www.ChemtechFord.com Utah Division of Water Quality Danny Ryan 195 North 1950 West Salt Lake City, UT 84116 PO#: Receipt: Date Reported: Project Name: 8/18/22 17:18 @ 3.4 °C 8/23/2022 [none] Report Footnotes Abbreviations ND = Not detected at the corresponding Minimum Reporting Limit (MRL). 1 mg/L = one milligram per liter or 1 mg/kg = one milligram per kilogram = 1 part per million. 1 ug/L = one microgram per liter or 1 ug/kg = one microgram per kilogram = 1 part per billion. 1 ng/L = one nanogram per liter or 1 ng/kg = one nanogram per kilogram = 1 part per trillion. Flag Descriptions BOD-BL = Of the two dilution blanks that were set up with the batch, one slightly failed the maximum depletion criteria. Because the other blank passed, it was determined that the dilution water was not compromised. The BOD results are not adversely affected. J = Detected but below the Reporting Limit; therefore, result is an estimated concentration (CLP J-Flag). J-LOW = Estimated low due to low recovery of LCS or CCV SPH = Sample submitted past method specified holding time. Project Name: [none]CtF WO#: 22H1973 www.ChemtechFord.com Page 12 of 13Page 12 of 14 Sample submitted in plastic container instead of glass Page 13 of 14 Page 14 of 14 The analyses presented on this report were performed in accordance with the National Environmental Laboratory Accreditation Program (NELAP) unless noted in the comments, flags, or case narrative. If the report is to be used for regulatory compliance, it should be presented in its entirety, and not be altered. Client Service Contact: 801.262.7299 Enviro Care Attn: Josh Greenwood 505 North Main Street North Salt Lake, UT 84054 Work Order: 22H2111 Project: Ogden City 8/29/2022 Approved By: Dave Gayer, Laboratory Director 9632 South 500 West Sandy, Utah 84070 Serving the Intermountain West since 1953 801.262.7299 Main 866.792.0093 Fax www.ChemtechFord.com Page 1 of 9 xx Chemtech-Ford Laboratories Serving the Intermountain West Since 1953 Certificate of Analysis 9632 South 500 West Sandy, UT 84070 O:(801) 262-7299 F: (866) 792-0093 www.ChemtechFord.com Enviro Care Josh Greenwood 505 North Main Street North Salt Lake, UT 84054 PO#: Receipt: Date Reported: Project Name: 7908 8/22/22 15:10 @ 4.9 °C 8/29/2022 Ogden City Sample ID: Storm Drain Discharge Lab ID: 22H2111-01Matrix: Water Flag(s)Units Analysis Date/Time Date Sampled: 8/19/22 20:00 Preparation Date/Time Sampled By: Nate Weaver Minimum Reporting Limit MethodResult Metals mg/L 8/23/228/22/220.05 EPA 6010B/C/DNDArsenic, Total mg/L 8/23/228/22/220.005 EPA 6010B/C/D0.143Barium, Total mg/L 8/23/228/22/220.005 EPA 6010B/C/DNDCadmium, Total mg/L 8/23/228/22/220.005 EPA 6010B/C/DNDChromium, Total mg/L 8/23/228/22/220.02 EPA 6010B/C/DNDLead, Total mg/L 8/24/228/23/220.0002 EPA 7470ANDMercury, Total mg/L 8/23/228/22/220.05 EPA 6010B/C/D0.01Selenium, Total mg/L 8/23/228/22/220.005 EPA 6010B/C/DNDSilver, Total Herbicides ug/L 8/24/228/23/221.00 EPA 8321ND2,4,5-T ug/L 8/24/228/23/221.00 EPA 8321ND2,4,5-TP ug/L 8/24/228/23/221.00 EPA 832110.22,4-D ug/L 8/24/228/23/221.00 EPA 8321ND2,4-DB ug/L 8/24/228/23/221.00 EPA 8321NDDicamba ug/L 8/24/228/23/221.00 EPA 8321NDDinoseb ug/L 8/24/228/23/221.00 EPA 8321NDPentachlorophenol PCBs ug/L 8/24/228/23/222.0 EPA 8082NDPCB-1260 ug/L 8/24/228/23/222.0 EPA 8082NDPCB-1254 ug/L 8/24/228/23/222.0 EPA 8082NDPCB-1248 ug/L 8/24/228/23/222.0 EPA 8082NDPCB-1242 ug/L 8/24/228/23/222.0 EPA 8082NDPCB-1232 ug/L 8/24/228/23/222.0 EPA 8082NDPCB-1221 ug/L 8/24/228/23/222.0 EPA 8082NDPCB-1016 ug/L 8/24/228/23/222.0 EPA 8082NDPCB-1268 Pesticides ug/L 8/23/228/23/220.20 EPA 8081NDAldrin ug/L 8/23/228/23/220.05 EPA 8081NDalpha-BHC ug/L 8/23/228/23/220.10 EPA 8081NDalpha-Chlordane ug/L 8/23/228/23/220.10 EPA 8081NDbeta-BHC ug/L 8/23/228/23/220.20 EPA 8081NDDDD ug/L 8/23/228/23/220.10 EPA 8081NDDDE ug/L 8/23/228/23/220.20 EPA 8081NDDDT ug/L 8/23/228/23/220.10 EPA 8081NDdelta-BHC ug/L 8/23/228/23/220.10 EPA 8081NDDieldrin ug/L 8/23/228/23/220.10 EPA 8081NDEndosulfan I ug/L 8/23/228/23/220.20 EPA 8081NDEndosulfan II Project Name: Ogden City CtF WO#: 22H2111 www.ChemtechFord.com Page 2 of 9Page 2 of 9 xx Chemtech-Ford Laboratories Serving the Intermountain West Since 1953 Certificate of Analysis 9632 South 500 West Sandy, UT 84070 O:(801) 262-7299 F: (866) 792-0093 www.ChemtechFord.com Enviro Care Josh Greenwood 505 North Main Street North Salt Lake, UT 84054 PO#: Receipt: Date Reported: Project Name: 7908 8/22/22 15:10 @ 4.9 °C 8/29/2022 Ogden City Sample ID: Storm Drain Discharge (cont.) Lab ID: 22H2111-01Matrix: Water Flag(s)Units Analysis Date/Time Date Sampled: 8/19/22 20:00 Preparation Date/Time Sampled By: Nate Weaver Minimum Reporting Limit MethodResult Pesticides (cont.) ug/L 8/23/228/23/220.20 EPA 8081NDEndosulfan sulfate ug/L 8/23/228/23/220.10 EPA 8081NDEndrin ug/L 8/23/228/23/220.25 EPA 8081NDEndrin aldehyde ug/L 8/23/228/23/220.20 EPA 8081NDEndrin ketone ug/L 8/23/228/23/220.10 EPA 8081NDgamma-Chlordane ug/L 8/23/228/23/220.10 EPA 8081NDHeptachlor ug/L 8/23/228/23/220.10 EPA 8081NDHeptachlor epoxide ug/L 8/23/228/23/220.05 EPA 8081NDLindane ug/L 8/23/228/23/221.00 EPA 8081NDMethoxychlor ug/L 8/23/228/23/222.00 EPA 8081NDToxaphene Gasoline Range mg/L 8/23/228/23/220.01 EPA 8260/624NDGasoline Range Organics Diesel Range mg/L 8/24/228/23/221.0 EPA 8015C/3510B1.8Diesel Range Organics mg/L 8/24/228/23/221.0 EPA 8015 CNDOil Range Organics Semi-Volatile Compounds ug/L 8/24/228/23/2210EPA 8270E/3511ND1,2,4-Trichlorobenzene ug/L 8/24/228/23/2210EPA 8270E/3511ND1,2-Dichlorobenzene ug/L 8/24/228/23/2210EPA 8270E/3511ND1,3-Dichlorobenzene ug/L 8/24/228/23/2210EPA 8270E/3511ND1,4-Dichlorobenzene ug/L 8/24/228/23/2210EPA 8270E/3511ND1-Methylnaphthalene ug/L 8/24/228/23/2210EPA 8270E/3511ND2,2'-Oxybis(1-Chloropropane) ug/L 8/24/228/23/2210EPA 8270E/3511ND2,3,4,6-Tetrachlorophenol ug/L 8/24/228/23/2210EPA 8270E/3511ND2,4,5-Trichlorophenol ug/L 8/24/228/23/2210EPA 8270E/3511ND2,4,6-Trichlorophenol ug/L 8/24/228/23/2210EPA 8270E/3511ND2,4-Dichlorophenol ug/L 8/24/228/23/2210EPA 8270E/3511ND2,4-Dimethylphenol ug/L 8/24/228/23/2225EPA 8270E/3511ND2,4-Dinitrophenol ug/L 8/24/228/23/2210EPA 8270E/3511ND2,4-Dinitrotoluene ug/L 8/24/228/23/2210EPA 8270E/3511ND2,6-Dichlorophenol ug/L 8/24/228/23/2210EPA 8270E/3511ND2,6-Dinitrotoluene ug/L 8/24/228/23/2210EPA 8270E/3511ND2-Chlorophenol ug/L 8/24/228/23/2210EPA 8270E/3511ND2-Methylnaphthalene ug/L 8/24/228/23/2210EPA 8270E/3511ND2-Methylphenol ug/L 8/24/228/23/2210EPA 8270E/3511ND2-Nitroaniline ug/L 8/24/228/23/2210EPA 8270E/3511ND2-Nitrophenol ug/L J-High, J8/24/228/23/2210EPA 8270E/351143 & 4-Methylphenol Project Name: Ogden City CtF WO#: 22H2111 www.ChemtechFord.com Page 3 of 9Page 3 of 9 xx Chemtech-Ford Laboratories Serving the Intermountain West Since 1953 Certificate of Analysis 9632 South 500 West Sandy, UT 84070 O:(801) 262-7299 F: (866) 792-0093 www.ChemtechFord.com Enviro Care Josh Greenwood 505 North Main Street North Salt Lake, UT 84054 PO#: Receipt: Date Reported: Project Name: 7908 8/22/22 15:10 @ 4.9 °C 8/29/2022 Ogden City Sample ID: Storm Drain Discharge (cont.) Lab ID: 22H2111-01Matrix: Water Flag(s)Units Analysis Date/Time Date Sampled: 8/19/22 20:00 Preparation Date/Time Sampled By: Nate Weaver Minimum Reporting Limit MethodResult Semi-Volatile Compounds (cont.) ug/L 8/24/228/23/2210EPA 8270E/3511ND3,3´-Dichlorobenzidine ug/L 8/24/228/23/2210EPA 8270E/3511ND3-Nitroaniline ug/L 8/24/228/23/2225EPA 8270E/3511ND4,6-Dinitro-2-methylphenol ug/L 8/24/228/23/2210EPA 8270E/3511ND4-Bromophenyl phenyl ether ug/L 8/24/228/23/2210EPA 8270E/3511ND4-Chloro-3-methylphenol ug/L 8/24/228/23/2210EPA 8270E/3511ND4-Chloroaniline ug/L 8/24/228/23/2210EPA 8270E/3511ND4-Chlorophenyl Phenyl Ether ug/L 8/24/228/23/2210EPA 8270E/3511ND4-Nitroaniline ug/L 8/24/228/23/2220EPA 8270E/3511ND4-Nitrophenol ug/L 8/24/228/23/2210EPA 8270E/3511NDAcenaphthene ug/L 8/24/228/23/2210EPA 8270E/3511NDAcenaphthylene ug/L 8/24/228/23/2210EPA 8270E/3511NDAniline ug/L 8/24/228/23/2210EPA 8270E/3511NDAnthracene ug/L 8/24/228/23/2210EPA 8270E/3511NDAtrazine ug/L 8/24/228/23/2210EPA 8270E/3511NDAzobenzene ug/L 8/24/228/23/2210EPA 8270E/3511NDBenzo (a) anthracene ug/L 8/24/228/23/2240EPA 8270E/3511NDBenzaldehyde ug/L 8/24/228/23/2210EPA 8270E/3511NDBenzo (a) pyrene ug/L 8/24/228/23/2210EPA 8270E/3511NDBenzo (b) fluoranthene ug/L 8/24/228/23/2210EPA 8270E/3511NDBenzo (g,h,i) perylene ug/L 8/24/228/23/2210EPA 8270E/3511NDBenzo (k) fluoranthene ug/L 8/24/228/23/2210EPA 8270E/351142Benzoic acid ug/L 8/24/228/23/2210EPA 8270E/3511NDBenzyl Alcohol ug/L 8/24/228/23/2210EPA 8270E/3511NDBis (2-chloroethoxy) Methane ug/L 8/24/228/23/2210EPA 8270E/3511NDBis (2-chloroethyl) Ether ug/L 8/24/228/23/2210EPA 8270E/3511NDBis (2-ethylhexyl) Phthalate ug/L 8/24/228/23/2210EPA 8270E/3511NDButylbenzylphthalate ug/L 8/24/228/23/2210EPA 8270E/3511NDCarbazole ug/L 8/24/228/23/2210EPA 8270E/3511NDChrysene ug/L 8/24/228/23/2210EPA 8270E/3511NDDibenz (a,h) anthracene ug/L 8/24/228/23/2210EPA 8270E/3511NDDibenzofuran ug/L 8/24/228/23/2210EPA 8270E/3511NDDiethylphthalate ug/L 8/24/228/23/2210EPA 8270E/3511NDDimethyl phthalate ug/L J8/24/228/23/2210EPA 8270E/35114Di-n-butylphthalate ug/L 8/24/228/23/2210EPA 8270E/3511NDDi-n-Octylphthalate ug/L 8/24/228/23/2210EPA 8270E/3511NDDiphenylamine ug/L 8/24/228/23/2210EPA 8270E/3511NDFluoranthene Project Name: Ogden City CtF WO#: 22H2111 www.ChemtechFord.com Page 4 of 9Page 4 of 9 xx Chemtech-Ford Laboratories Serving the Intermountain West Since 1953 Certificate of Analysis 9632 South 500 West Sandy, UT 84070 O:(801) 262-7299 F: (866) 792-0093 www.ChemtechFord.com Enviro Care Josh Greenwood 505 North Main Street North Salt Lake, UT 84054 PO#: Receipt: Date Reported: Project Name: 7908 8/22/22 15:10 @ 4.9 °C 8/29/2022 Ogden City Sample ID: Storm Drain Discharge (cont.) Lab ID: 22H2111-01Matrix: Water Flag(s)Units Analysis Date/Time Date Sampled: 8/19/22 20:00 Preparation Date/Time Sampled By: Nate Weaver Minimum Reporting Limit MethodResult Semi-Volatile Compounds (cont.) ug/L 8/24/228/23/2210EPA 8270E/3511NDFluorene ug/L 8/24/228/23/2210EPA 8270E/3511NDHexachlorobenzene ug/L 8/24/228/23/2210EPA 8270E/3511NDHexachlorobutadiene ug/L 8/24/228/23/2210EPA 8270E/3511NDHexachlorocyclopentadiene ug/L 8/24/228/23/2210EPA 8270E/3511NDHexachloroethane ug/L 8/24/228/23/2210EPA 8270E/3511NDIndene ug/L 8/24/228/23/2210EPA 8270E/3511NDIndeno (1,2,3-cd) pyrene ug/L 8/24/228/23/2210EPA 8270E/3511NDIsophorone ug/L 8/24/228/23/2210EPA 8270E/3511NDNaphthalene ug/L 8/24/228/23/2210EPA 8270E/3511NDNitrobenzene ug/L 8/24/228/23/2210EPA 8270E/3511NDN-Nitrosodimethylamine ug/L 8/24/228/23/2210EPA 8270E/3511NDN-Nitrosodi-n-propylamine ug/L 8/24/228/23/2210EPA 8270E/3511NDN-Nitrosodiphenylamine ug/L 8/24/228/23/2210EPA 8270E/3511NDPentachlorophenol ug/L 8/24/228/23/2210EPA 8270E/3511NDPhenanthrene ug/L 8/24/228/23/2210EPA 8270E/3511NDPhenol ug/L 8/24/228/23/2210EPA 8270E/3511NDPyrene ug/L 8/24/228/23/2210EPA 8270E/3511NDPyridine Volatile Organic Compounds ug/L 8/23/228/23/221.0 EPA 8260D /5030AND1,1,1,2-Tetrachloroethane ug/L 8/23/228/23/221.0 EPA 8260D /5030AND1,1,1-Trichloroethane ug/L 8/23/228/23/221.0 EPA 8260D /5030AND1,1,2,2-Tetrachloroethane ug/L 8/23/228/23/221.0 EPA 8260D /5030AND1,1,2-Trichloroethane ug/L 8/23/228/23/221.0 EPA 8260D /5030AND1,1,2-Trichlorotrifluoroethane ug/L 8/23/228/23/221.0 EPA 8260D /5030AND1,1-Dichloroethane ug/L 8/23/228/23/221.0 EPA 8260D /5030AND1,1-Dichloroethene ug/L 8/23/228/23/221.0 EPA 8260D /5030AND1,1-Dichloropropene ug/L 8/23/228/23/2220.0 EPA 8260D /5030AND2-Hexanone ug/L 8/23/228/23/221.0 EPA 8260D /5030AND1,2,3-Trichlorobenzene ug/L 8/23/228/23/221.0 EPA 8260D /5030AND1,2,3-Trichloropropane ug/L 8/23/228/23/221.0 EPA 8260D /5030AND1,2,4-Trichlorobenzene ug/L 8/23/228/23/221.0 EPA 8260D /5030AND1,2,4-Trimethylbenzene ug/L 8/23/228/23/221.0 EPA 8260D /5030AND1,2-Dibromo-3-chloropropane ug/L 8/23/228/23/221.0 EPA 8260D /5030AND1,2-Dibromoethane (EDB) ug/L 8/23/228/23/221.0 EPA 8260D /5030AND1,2-Dichlorobenzene ug/L 8/23/228/23/221.0 EPA 8260D /5030AND1,2-Dichloroethane ug/L 8/23/228/23/221.0 EPA 8260D /5030AND1,2-Dichloropropane Project Name: Ogden City CtF WO#: 22H2111 www.ChemtechFord.com Page 5 of 9Page 5 of 9 xx Chemtech-Ford Laboratories Serving the Intermountain West Since 1953 Certificate of Analysis 9632 South 500 West Sandy, UT 84070 O:(801) 262-7299 F: (866) 792-0093 www.ChemtechFord.com Enviro Care Josh Greenwood 505 North Main Street North Salt Lake, UT 84054 PO#: Receipt: Date Reported: Project Name: 7908 8/22/22 15:10 @ 4.9 °C 8/29/2022 Ogden City Sample ID: Storm Drain Discharge (cont.) Lab ID: 22H2111-01Matrix: Water Flag(s)Units Analysis Date/Time Date Sampled: 8/19/22 20:00 Preparation Date/Time Sampled By: Nate Weaver Minimum Reporting Limit MethodResult Volatile Organic Compounds (cont.) ug/L 8/23/228/23/221.0 EPA 8260D /5030AND1,3,5-Trimethylbenzene ug/L 8/23/228/23/221.0 EPA 8260D /5030AND1,3-Dichlorobenzene ug/L 8/23/228/23/221.0 EPA 8260D /5030AND1,3-Dichloropropane ug/L 8/23/228/23/221.0 EPA 8260D /5030AND1,4-Dichlorobenzene ug/L 8/23/228/23/221.0 EPA 8260D /5030AND2,2-Dichloropropane ug/L 8/23/228/23/221.0 EPA 8260D /5030AND2-Chlorotoluene ug/L 8/23/228/23/2210.0 EPA 8260D /5030AND2-Nitropropane ug/L 8/23/228/23/221.0 EPA 8260D /5030AND4-Chlorotoluene ug/L 8/23/228/23/2210.0 EPA 8260D /5030A45.9Acetone ug/L 8/23/228/23/2210.0 EPA 8260D /5030ANDAcrylonitrile ug/L 8/23/228/23/220.4 EPA 8260D /5030A0.8Benzene ug/L 8/23/228/23/221.0 EPA 8260D /5030ANDBromobenzene ug/L 8/23/228/23/221.0 EPA 8260D /5030ANDBromochloromethane ug/L 8/23/228/23/221.0 EPA 8260D /5030ANDBromodichloromethane ug/L 8/23/228/23/221.0 EPA 8260D /5030ANDBromoform ug/L 8/23/228/23/221.0 EPA 8260D /5030ANDBromomethane ug/L J8/23/228/23/221.0 EPA 8260D /5030A0.8Carbon Disulfide ug/L 8/23/228/23/221.0 EPA 8260D /5030ANDCarbon Tetrachloride ug/L 8/23/228/23/221.0 EPA 8260D /5030ANDChlorobenzene ug/L 8/23/228/23/221.0 EPA 8260D /5030ANDChloroethane ug/L 8/23/228/23/221.0 EPA 8260D /5030ANDChloroform ug/L 8/23/228/23/221.0 EPA 8260D /5030ANDChloromethane ug/L 8/23/228/23/221.0 EPA 8260D /5030ANDcis-1,2-Dichloroethene ug/L 8/23/228/23/221.0 EPA 8260D /5030ANDcis-1,3-Dichloropropene ug/L 8/23/228/23/2220.0 EPA 8260D /5030ANDCyclohexanone ug/L 8/23/228/23/221.0 EPA 8260D /5030ANDDibromochloromethane ug/L 8/23/228/23/221.0 EPA 8260D /5030ANDDibromomethane ug/L 8/23/228/23/221.0 EPA 8260D /5030ANDDichlorodifluoromethane ug/L 8/23/228/23/2210.0 EPA 8260D /5030ANDEthyl Acetate ug/L 8/23/228/23/221.0 EPA 8260D /5030ANDEthylbenzene ug/L 8/23/228/23/221.0 EPA 8260D /5030ANDEthyl Ether ug/L 8/23/228/23/221.0 EPA 8260D /5030ANDHexachlorobutadiene ug/L 8/23/228/23/2210.0 EPA 8260D /5030ANDIsobutanol ug/L 8/23/228/23/221.0 EPA 8260D /5030ANDIsopropylbenzene ug/L 8/23/228/23/2210.0 EPA 8260D /5030A17.2Methyl Ethyl Ketone ug/L 8/23/228/23/2210.0 EPA 8260D /5030ANDMethyl Isobutyl Ketone ug/L 8/23/228/23/222.0 EPA 8260D /5030ANDMethylene Chloride Project Name: Ogden City CtF WO#: 22H2111 www.ChemtechFord.com Page 6 of 9Page 6 of 9 xx Chemtech-Ford Laboratories Serving the Intermountain West Since 1953 Certificate of Analysis 9632 South 500 West Sandy, UT 84070 O:(801) 262-7299 F: (866) 792-0093 www.ChemtechFord.com Enviro Care Josh Greenwood 505 North Main Street North Salt Lake, UT 84054 PO#: Receipt: Date Reported: Project Name: 7908 8/22/22 15:10 @ 4.9 °C 8/29/2022 Ogden City Sample ID: Storm Drain Discharge (cont.) Lab ID: 22H2111-01Matrix: Water Flag(s)Units Analysis Date/Time Date Sampled: 8/19/22 20:00 Preparation Date/Time Sampled By: Nate Weaver Minimum Reporting Limit MethodResult Volatile Organic Compounds (cont.) ug/L 8/23/228/23/221.0 EPA 8260D /5030ANDMethyl-tert-butyl ether (MTBE) ug/L J8/23/228/23/221.0 EPA 8260D /5030A0.9Naphthalene ug/L 8/23/228/23/2240.0 EPA 8260D /5030ANDn-Butyl Alcohol ug/L 8/23/228/23/221.0 EPA 8260D /5030ANDn-Butylbenzene ug/L 8/23/228/23/2220.0 EPA 8260D /5030ANDNitrobenzene ug/L 8/23/228/23/221.0 EPA 8260D /5030ANDn-Propyl Benzene ug/L 8/23/228/23/221.0 EPA 8260D /5030ANDp-Isopropyltoluene ug/L 8/23/228/23/221.0 EPA 8260D /5030ANDsec-Butyl Benzene ug/L 8/23/228/23/221.0 EPA 8260D /5030ANDStyrene ug/L 8/23/228/23/221.0 EPA 8260D /5030ANDtert-Butylbenzene ug/L J8/23/228/23/221.0 EPA 8260D /5030A0.9Tetrachloroethene ug/L 8/23/228/23/221.0 EPA 8260D /5030A1.5Toluene ug/L 8/23/228/23/221.0 EPA 8260D /5030ANDtrans-1,2-Dichloroethene ug/L 8/23/228/23/221.0 EPA 8260D /5030ANDtrans-1,3-Dichloropropene ug/L 8/23/228/23/221.0 EPA 8260D /5030ANDTrichloroethene ug/L 8/23/228/23/221.0 EPA 8260D /5030ANDTrichlorofluoromethane ug/L 8/23/228/23/221.0 EPA 8260D /5030ANDVinyl Chloride ug/L J8/23/228/23/221.0 EPA 8260D /5030A0.8Xylenes, total Project Name: Ogden City CtF WO#: 22H2111 www.ChemtechFord.com Page 7 of 9Page 7 of 9 xx Chemtech-Ford Laboratories Serving the Intermountain West Since 1953 Certificate of Analysis 9632 South 500 West Sandy, UT 84070 O:(801) 262-7299 F: (866) 792-0093 www.ChemtechFord.com Enviro Care Josh Greenwood 505 North Main Street North Salt Lake, UT 84054 PO#: Receipt: Date Reported: Project Name: 7908 8/22/22 15:10 @ 4.9 °C 8/29/2022 Ogden City Report Footnotes Abbreviations ND = Not detected at the corresponding Minimum Reporting Limit (MRL). 1 mg/L = one milligram per liter or 1 mg/kg = one milligram per kilogram = 1 part per million. 1 ug/L = one microgram per liter or 1 ug/kg = one microgram per kilogram = 1 part per billion. 1 ng/L = one nanogram per liter or 1 ng/kg = one nanogram per kilogram = 1 part per trillion. Flag Descriptions J = Detected but below the Reporting Limit; therefore, result is an estimated concentration (CLP J-Flag). J-High = Estimated High due to high recovery of LCS or CCV Project Name: Ogden City CtF WO#: 22H2111 www.ChemtechFord.com Page 8 of 9Page 8 of 9 Page 9 of 9 The analyses presented on this report were performed in accordance with the National Environmental Laboratory Accreditation Program (NELAP) unless noted in the comments, flags, or case narrative. If the report is to be used for regulatory compliance, it should be presented in its entirety, and not be altered. Client Service Contact: 801.262.7299 Utah Division of Water Quality Attn: Danny Ryan 195 North 1950 West Salt Lake City, UT 84116 Work Order: 22H2685 Project: [none] 9/6/2022 Approved By: Melissa Connolly, Project Manager 9632 South 500 West Sandy, Utah 84070 Serving the Intermountain West since 1953 801.262.7299 Main 866.792.0093 Fax www.ChemtechFord.com Page 1 of 18 xx Chemtech-Ford Laboratories Serving the Intermountain West Since 1953 Certificate of Analysis 9632 South 500 West Sandy, UT 84070 O:(801) 262-7299 F: (866) 792-0093 www.ChemtechFord.com Utah Division of Water Quality Danny Ryan 195 North 1950 West Salt Lake City, UT 84116 PO#: Receipt: Date Reported: Project Name: 7CRECEARTN 8/26/22 14:09 @ 15.0 °C 9/6/2022 [none] Sample ID: Outlet to Weber Lab ID: 22H2685-01Matrix: Water Flag(s)Units Analysis Date/Time Date Sampled: 8/25/22 10:55 Preparation Date/Time Sampled By: Daniel Ryan Minimum Reporting Limit MethodResult Inorganic mg/L 8/31/22 15:028/26/22 16:135SM 5210 BNDBiochemical Oxygen Demand mg/L 9/1/228/30/225EPA 1664ANDOil & Grease (HEM) mg/L 8/29/228/29/224SM 2540 D6Total Suspended Solids (TSS) Volatile Organic Compounds ug/L 8/29/228/29/221.0 EPA 8260D /5030AND1,1,1,2-Tetrachloroethane ug/L 8/29/228/29/221.0 EPA 8260D /5030AND1,1,1-Trichloroethane ug/L 8/29/228/29/221.0 EPA 8260D /5030AND1,1,2,2-Tetrachloroethane ug/L 8/29/228/29/221.0 EPA 8260D /5030AND1,1,2-Trichloroethane ug/L 8/29/228/29/221.0 EPA 8260D /5030AND1,1,2-Trichlorotrifluoroethane ug/L 8/29/228/29/221.0 EPA 8260D /5030AND1,1-Dichloroethane ug/L 8/29/228/29/221.0 EPA 8260D /5030AND1,1-Dichloroethene ug/L 8/29/228/29/221.0 EPA 8260D /5030AND1,1-Dichloropropene ug/L 8/29/228/29/2220.0 EPA 8260D /5030AND2-Hexanone ug/L 8/29/228/29/221.0 EPA 8260D /5030AND1,2,3-Trichlorobenzene ug/L 8/29/228/29/221.0 EPA 8260D /5030AND1,2,3-Trichloropropane ug/L 8/29/228/29/221.0 EPA 8260D /5030AND1,2,4-Trichlorobenzene ug/L 8/29/228/29/221.0 EPA 8260D /5030AND1,2,4-Trimethylbenzene ug/L 8/29/228/29/221.0 EPA 8260D /5030AND1,2-Dibromo-3-chloropropane ug/L 8/29/228/29/221.0 EPA 8260D /5030AND1,2-Dibromoethane (EDB) ug/L 8/29/228/29/221.0 EPA 8260D /5030AND1,2-Dichlorobenzene ug/L 8/29/228/29/221.0 EPA 8260D /5030AND1,2-Dichloroethane ug/L 8/29/228/29/221.0 EPA 8260D /5030AND1,2-Dichloropropane ug/L 8/29/228/29/221.0 EPA 8260D /5030AND1,3,5-Trimethylbenzene ug/L 8/29/228/29/221.0 EPA 8260D /5030AND1,3-Dichlorobenzene ug/L 8/29/228/29/221.0 EPA 8260D /5030AND1,3-Dichloropropane ug/L 8/29/228/29/221.0 EPA 8260D /5030AND1,4-Dichlorobenzene ug/L 8/29/228/29/221.0 EPA 8260D /5030AND2,2-Dichloropropane ug/L 8/29/228/29/221.0 EPA 8260D /5030AND2-Chlorotoluene ug/L 8/29/228/29/2210.0 EPA 8260D /5030AND2-Nitropropane ug/L 8/29/228/29/221.0 EPA 8260D /5030AND4-Chlorotoluene ug/L 8/29/228/29/2210.0 EPA 8260D /5030ANDAcetone ug/L 8/29/228/29/2210.0 EPA 8260D /5030ANDAcrylonitrile ug/L 8/29/228/29/220.4 EPA 8260D /5030ANDBenzene ug/L 8/29/228/29/221.0 EPA 8260D /5030ANDBromobenzene ug/L 8/29/228/29/221.0 EPA 8260D /5030ANDBromochloromethane ug/L 8/29/228/29/221.0 EPA 8260D /5030ANDBromodichloromethane ug/L 8/29/228/29/221.0 EPA 8260D /5030ANDBromoform Project Name: [none]CtF WO#: 22H2685 www.ChemtechFord.com Page 2 of 18Page 2 of 18 xx Chemtech-Ford Laboratories Serving the Intermountain West Since 1953 Certificate of Analysis 9632 South 500 West Sandy, UT 84070 O:(801) 262-7299 F: (866) 792-0093 www.ChemtechFord.com Utah Division of Water Quality Danny Ryan 195 North 1950 West Salt Lake City, UT 84116 PO#: Receipt: Date Reported: Project Name: 7CRECEARTN 8/26/22 14:09 @ 15.0 °C 9/6/2022 [none] Sample ID: Outlet to Weber (cont.) Lab ID: 22H2685-01Matrix: Water Flag(s)Units Analysis Date/Time Date Sampled: 8/25/22 10:55 Preparation Date/Time Sampled By: Daniel Ryan Minimum Reporting Limit MethodResult Volatile Organic Compounds (cont.) ug/L 8/29/228/29/221.0 EPA 8260D /5030ANDBromomethane ug/L 8/29/228/29/221.0 EPA 8260D /5030ANDCarbon Disulfide ug/L 8/29/228/29/221.0 EPA 8260D /5030ANDCarbon Tetrachloride ug/L 8/29/228/29/221.0 EPA 8260D /5030ANDChlorobenzene ug/L 8/29/228/29/221.0 EPA 8260D /5030ANDChloroethane ug/L 8/29/228/29/221.0 EPA 8260D /5030ANDChloroform ug/L 8/29/228/29/221.0 EPA 8260D /5030ANDChloromethane ug/L 8/29/228/29/221.0 EPA 8260D /5030ANDcis-1,2-Dichloroethene ug/L 8/29/228/29/221.0 EPA 8260D /5030ANDcis-1,3-Dichloropropene ug/L 8/29/228/29/2220.0 EPA 8260D /5030ANDCyclohexanone ug/L 8/29/228/29/221.0 EPA 8260D /5030ANDDibromochloromethane ug/L 8/29/228/29/221.0 EPA 8260D /5030ANDDibromomethane ug/L 8/29/228/29/221.0 EPA 8260D /5030ANDDichlorodifluoromethane ug/L 8/29/228/29/2210.0 EPA 8260D /5030ANDEthyl Acetate ug/L 8/29/228/29/221.0 EPA 8260D /5030ANDEthylbenzene ug/L 8/29/228/29/221.0 EPA 8260D /5030ANDEthyl Ether ug/L 8/29/228/29/221.0 EPA 8260D /5030ANDHexachlorobutadiene ug/L 8/29/228/29/2210.0 EPA 8260D /5030ANDIsobutanol ug/L 8/29/228/29/221.0 EPA 8260D /5030ANDIsopropylbenzene ug/L 8/29/228/29/2210.0 EPA 8260D /5030ANDMethyl Ethyl Ketone ug/L 8/29/228/29/2210.0 EPA 8260D /5030ANDMethyl Isobutyl Ketone ug/L 8/29/228/29/222.0 EPA 8260D /5030ANDMethylene Chloride ug/L 8/29/228/29/221.0 EPA 8260D /5030ANDMethyl-tert-butyl ether (MTBE) ug/L 8/29/228/29/221.0 EPA 8260D /5030ANDNaphthalene ug/L J-LOW8/29/228/29/2240.0 EPA 8260D /5030ANDn-Butyl Alcohol ug/L 8/29/228/29/221.0 EPA 8260D /5030ANDn-Butylbenzene ug/L J-LOW8/29/228/29/2220.0 EPA 8260D /5030ANDNitrobenzene ug/L 8/29/228/29/221.0 EPA 8260D /5030ANDn-Propyl Benzene ug/L 8/29/228/29/221.0 EPA 8260D /5030ANDp-Isopropyltoluene ug/L 8/29/228/29/221.0 EPA 8260D /5030ANDsec-Butyl Benzene ug/L 8/29/228/29/221.0 EPA 8260D /5030ANDStyrene ug/L 8/29/228/29/221.0 EPA 8260D /5030ANDtert-Butylbenzene ug/L 8/29/228/29/221.0 EPA 8260D /5030ANDTetrachloroethene ug/L 8/29/228/29/221.0 EPA 8260D /5030ANDToluene ug/L 8/29/228/29/221.0 EPA 8260D /5030ANDtrans-1,2-Dichloroethene ug/L 8/29/228/29/221.0 EPA 8260D /5030ANDtrans-1,3-Dichloropropene ug/L 8/29/228/29/221.0 EPA 8260D /5030ANDTrichloroethene Project Name: [none]CtF WO#: 22H2685 www.ChemtechFord.com Page 3 of 18Page 3 of 18 xx Chemtech-Ford Laboratories Serving the Intermountain West Since 1953 Certificate of Analysis 9632 South 500 West Sandy, UT 84070 O:(801) 262-7299 F: (866) 792-0093 www.ChemtechFord.com Utah Division of Water Quality Danny Ryan 195 North 1950 West Salt Lake City, UT 84116 PO#: Receipt: Date Reported: Project Name: 7CRECEARTN 8/26/22 14:09 @ 15.0 °C 9/6/2022 [none] Sample ID: Outlet to Weber (cont.) Lab ID: 22H2685-01Matrix: Water Flag(s)Units Analysis Date/Time Date Sampled: 8/25/22 10:55 Preparation Date/Time Sampled By: Daniel Ryan Minimum Reporting Limit MethodResult Volatile Organic Compounds (cont.) ug/L 8/29/228/29/221.0 EPA 8260D /5030ANDTrichlorofluoromethane ug/L 8/29/228/29/221.0 EPA 8260D /5030ANDVinyl Chloride ug/L 8/29/228/29/221.0 EPA 8260D /5030ANDXylenes, total Project Name: [none]CtF WO#: 22H2685 www.ChemtechFord.com Page 4 of 18Page 4 of 18 xx Chemtech-Ford Laboratories Serving the Intermountain West Since 1953 Certificate of Analysis 9632 South 500 West Sandy, UT 84070 O:(801) 262-7299 F: (866) 792-0093 www.ChemtechFord.com Utah Division of Water Quality Danny Ryan 195 North 1950 West Salt Lake City, UT 84116 PO#: Receipt: Date Reported: Project Name: 7CRECEARTN 8/26/22 14:09 @ 15.0 °C 9/6/2022 [none] Sample ID: Downstream Weber Lab ID: 22H2685-02Matrix: Water Flag(s)Units Analysis Date/Time Date Sampled: 8/25/22 11:07 Preparation Date/Time Sampled By: Daniel Ryan Minimum Reporting Limit MethodResult Inorganic mg/L 8/31/22 15:028/26/22 16:135SM 5210 BNDBiochemical Oxygen Demand mg/L 9/1/228/30/225EPA 1664ANDOil & Grease (HEM) mg/L 8/29/228/29/224SM 2540 D18Total Suspended Solids (TSS) Volatile Organic Compounds ug/L 8/29/228/29/221.0 EPA 8260D /5030AND1,1,1,2-Tetrachloroethane ug/L 8/29/228/29/221.0 EPA 8260D /5030AND1,1,1-Trichloroethane ug/L 8/29/228/29/221.0 EPA 8260D /5030AND1,1,2,2-Tetrachloroethane ug/L 8/29/228/29/221.0 EPA 8260D /5030AND1,1,2-Trichloroethane ug/L 8/29/228/29/221.0 EPA 8260D /5030AND1,1,2-Trichlorotrifluoroethane ug/L 8/29/228/29/221.0 EPA 8260D /5030AND1,1-Dichloroethane ug/L 8/29/228/29/221.0 EPA 8260D /5030AND1,1-Dichloroethene ug/L 8/29/228/29/221.0 EPA 8260D /5030AND1,1-Dichloropropene ug/L 8/29/228/29/2220.0 EPA 8260D /5030AND2-Hexanone ug/L 8/29/228/29/221.0 EPA 8260D /5030AND1,2,3-Trichlorobenzene ug/L 8/29/228/29/221.0 EPA 8260D /5030AND1,2,3-Trichloropropane ug/L 8/29/228/29/221.0 EPA 8260D /5030AND1,2,4-Trichlorobenzene ug/L 8/29/228/29/221.0 EPA 8260D /5030AND1,2,4-Trimethylbenzene ug/L 8/29/228/29/221.0 EPA 8260D /5030AND1,2-Dibromo-3-chloropropane ug/L 8/29/228/29/221.0 EPA 8260D /5030AND1,2-Dibromoethane (EDB) ug/L 8/29/228/29/221.0 EPA 8260D /5030AND1,2-Dichlorobenzene ug/L 8/29/228/29/221.0 EPA 8260D /5030AND1,2-Dichloroethane ug/L 8/29/228/29/221.0 EPA 8260D /5030AND1,2-Dichloropropane ug/L 8/29/228/29/221.0 EPA 8260D /5030AND1,3,5-Trimethylbenzene ug/L 8/29/228/29/221.0 EPA 8260D /5030AND1,3-Dichlorobenzene ug/L 8/29/228/29/221.0 EPA 8260D /5030AND1,3-Dichloropropane ug/L 8/29/228/29/221.0 EPA 8260D /5030AND1,4-Dichlorobenzene ug/L 8/29/228/29/221.0 EPA 8260D /5030AND2,2-Dichloropropane ug/L 8/29/228/29/221.0 EPA 8260D /5030AND2-Chlorotoluene ug/L 8/29/228/29/2210.0 EPA 8260D /5030AND2-Nitropropane ug/L 8/29/228/29/221.0 EPA 8260D /5030AND4-Chlorotoluene ug/L 8/29/228/29/2210.0 EPA 8260D /5030ANDAcetone ug/L 8/29/228/29/2210.0 EPA 8260D /5030ANDAcrylonitrile ug/L 8/29/228/29/220.4 EPA 8260D /5030ANDBenzene ug/L 8/29/228/29/221.0 EPA 8260D /5030ANDBromobenzene ug/L 8/29/228/29/221.0 EPA 8260D /5030ANDBromochloromethane ug/L 8/29/228/29/221.0 EPA 8260D /5030ANDBromodichloromethane ug/L 8/29/228/29/221.0 EPA 8260D /5030ANDBromoform Project Name: [none]CtF WO#: 22H2685 www.ChemtechFord.com Page 5 of 18Page 5 of 18 xx Chemtech-Ford Laboratories Serving the Intermountain West Since 1953 Certificate of Analysis 9632 South 500 West Sandy, UT 84070 O:(801) 262-7299 F: (866) 792-0093 www.ChemtechFord.com Utah Division of Water Quality Danny Ryan 195 North 1950 West Salt Lake City, UT 84116 PO#: Receipt: Date Reported: Project Name: 7CRECEARTN 8/26/22 14:09 @ 15.0 °C 9/6/2022 [none] Sample ID: Downstream Weber (cont.) Lab ID: 22H2685-02Matrix: Water Flag(s)Units Analysis Date/Time Date Sampled: 8/25/22 11:07 Preparation Date/Time Sampled By: Daniel Ryan Minimum Reporting Limit MethodResult Volatile Organic Compounds (cont.) ug/L 8/29/228/29/221.0 EPA 8260D /5030ANDBromomethane ug/L 8/29/228/29/221.0 EPA 8260D /5030ANDCarbon Disulfide ug/L 8/29/228/29/221.0 EPA 8260D /5030ANDCarbon Tetrachloride ug/L 8/29/228/29/221.0 EPA 8260D /5030ANDChlorobenzene ug/L 8/29/228/29/221.0 EPA 8260D /5030ANDChloroethane ug/L 8/29/228/29/221.0 EPA 8260D /5030ANDChloroform ug/L 8/29/228/29/221.0 EPA 8260D /5030ANDChloromethane ug/L 8/29/228/29/221.0 EPA 8260D /5030ANDcis-1,2-Dichloroethene ug/L 8/29/228/29/221.0 EPA 8260D /5030ANDcis-1,3-Dichloropropene ug/L 8/29/228/29/2220.0 EPA 8260D /5030ANDCyclohexanone ug/L 8/29/228/29/221.0 EPA 8260D /5030ANDDibromochloromethane ug/L 8/29/228/29/221.0 EPA 8260D /5030ANDDibromomethane ug/L 8/29/228/29/221.0 EPA 8260D /5030ANDDichlorodifluoromethane ug/L 8/29/228/29/2210.0 EPA 8260D /5030ANDEthyl Acetate ug/L 8/29/228/29/221.0 EPA 8260D /5030ANDEthylbenzene ug/L 8/29/228/29/221.0 EPA 8260D /5030ANDEthyl Ether ug/L 8/29/228/29/221.0 EPA 8260D /5030ANDHexachlorobutadiene ug/L 8/29/228/29/2210.0 EPA 8260D /5030ANDIsobutanol ug/L 8/29/228/29/221.0 EPA 8260D /5030ANDIsopropylbenzene ug/L 8/29/228/29/2210.0 EPA 8260D /5030ANDMethyl Ethyl Ketone ug/L 8/29/228/29/2210.0 EPA 8260D /5030ANDMethyl Isobutyl Ketone ug/L 8/29/228/29/222.0 EPA 8260D /5030ANDMethylene Chloride ug/L 8/29/228/29/221.0 EPA 8260D /5030ANDMethyl-tert-butyl ether (MTBE) ug/L 8/29/228/29/221.0 EPA 8260D /5030ANDNaphthalene ug/L J-LOW8/29/228/29/2240.0 EPA 8260D /5030ANDn-Butyl Alcohol ug/L 8/29/228/29/221.0 EPA 8260D /5030ANDn-Butylbenzene ug/L J-LOW8/29/228/29/2220.0 EPA 8260D /5030ANDNitrobenzene ug/L 8/29/228/29/221.0 EPA 8260D /5030ANDn-Propyl Benzene ug/L 8/29/228/29/221.0 EPA 8260D /5030ANDp-Isopropyltoluene ug/L 8/29/228/29/221.0 EPA 8260D /5030ANDsec-Butyl Benzene ug/L 8/29/228/29/221.0 EPA 8260D /5030ANDStyrene ug/L 8/29/228/29/221.0 EPA 8260D /5030ANDtert-Butylbenzene ug/L 8/29/228/29/221.0 EPA 8260D /5030ANDTetrachloroethene ug/L 8/29/228/29/221.0 EPA 8260D /5030ANDToluene ug/L 8/29/228/29/221.0 EPA 8260D /5030ANDtrans-1,2-Dichloroethene ug/L 8/29/228/29/221.0 EPA 8260D /5030ANDtrans-1,3-Dichloropropene ug/L 8/29/228/29/221.0 EPA 8260D /5030ANDTrichloroethene Project Name: [none]CtF WO#: 22H2685 www.ChemtechFord.com Page 6 of 18Page 6 of 18 xx Chemtech-Ford Laboratories Serving the Intermountain West Since 1953 Certificate of Analysis 9632 South 500 West Sandy, UT 84070 O:(801) 262-7299 F: (866) 792-0093 www.ChemtechFord.com Utah Division of Water Quality Danny Ryan 195 North 1950 West Salt Lake City, UT 84116 PO#: Receipt: Date Reported: Project Name: 7CRECEARTN 8/26/22 14:09 @ 15.0 °C 9/6/2022 [none] Sample ID: Downstream Weber (cont.) Lab ID: 22H2685-02Matrix: Water Flag(s)Units Analysis Date/Time Date Sampled: 8/25/22 11:07 Preparation Date/Time Sampled By: Daniel Ryan Minimum Reporting Limit MethodResult Volatile Organic Compounds (cont.) ug/L 8/29/228/29/221.0 EPA 8260D /5030ANDTrichlorofluoromethane ug/L 8/29/228/29/221.0 EPA 8260D /5030ANDVinyl Chloride ug/L 8/29/228/29/221.0 EPA 8260D /5030ANDXylenes, total Project Name: [none]CtF WO#: 22H2685 www.ChemtechFord.com Page 7 of 18Page 7 of 18 xx Chemtech-Ford Laboratories Serving the Intermountain West Since 1953 Certificate of Analysis 9632 South 500 West Sandy, UT 84070 O:(801) 262-7299 F: (866) 792-0093 www.ChemtechFord.com Utah Division of Water Quality Danny Ryan 195 North 1950 West Salt Lake City, UT 84116 PO#: Receipt: Date Reported: Project Name: 7CRECEARTN 8/26/22 14:09 @ 15.0 °C 9/6/2022 [none] Sample ID: Upstream Weber Lab ID: 22H2685-03Matrix: Water Flag(s)Units Analysis Date/Time Date Sampled: 8/25/22 11:20 Preparation Date/Time Sampled By: Daniel Ryan Minimum Reporting Limit MethodResult Inorganic mg/L 8/31/22 15:028/26/22 16:135SM 5210 BNDBiochemical Oxygen Demand mg/L 9/1/228/30/225EPA 1664ANDOil & Grease (HEM) mg/L 8/29/228/29/224SM 2540 D17Total Suspended Solids (TSS) Volatile Organic Compounds ug/L 8/29/228/29/221.0 EPA 8260D /5030AND1,1,1,2-Tetrachloroethane ug/L 8/29/228/29/221.0 EPA 8260D /5030AND1,1,1-Trichloroethane ug/L 8/29/228/29/221.0 EPA 8260D /5030AND1,1,2,2-Tetrachloroethane ug/L 8/29/228/29/221.0 EPA 8260D /5030AND1,1,2-Trichloroethane ug/L 8/29/228/29/221.0 EPA 8260D /5030AND1,1,2-Trichlorotrifluoroethane ug/L 8/29/228/29/221.0 EPA 8260D /5030AND1,1-Dichloroethane ug/L 8/29/228/29/221.0 EPA 8260D /5030AND1,1-Dichloroethene ug/L 8/29/228/29/221.0 EPA 8260D /5030AND1,1-Dichloropropene ug/L 8/29/228/29/2220.0 EPA 8260D /5030AND2-Hexanone ug/L 8/29/228/29/221.0 EPA 8260D /5030AND1,2,3-Trichlorobenzene ug/L 8/29/228/29/221.0 EPA 8260D /5030AND1,2,3-Trichloropropane ug/L 8/29/228/29/221.0 EPA 8260D /5030AND1,2,4-Trichlorobenzene ug/L 8/29/228/29/221.0 EPA 8260D /5030AND1,2,4-Trimethylbenzene ug/L 8/29/228/29/221.0 EPA 8260D /5030AND1,2-Dibromo-3-chloropropane ug/L 8/29/228/29/221.0 EPA 8260D /5030AND1,2-Dibromoethane (EDB) ug/L 8/29/228/29/221.0 EPA 8260D /5030AND1,2-Dichlorobenzene ug/L 8/29/228/29/221.0 EPA 8260D /5030AND1,2-Dichloroethane ug/L 8/29/228/29/221.0 EPA 8260D /5030AND1,2-Dichloropropane ug/L 8/29/228/29/221.0 EPA 8260D /5030AND1,3,5-Trimethylbenzene ug/L 8/29/228/29/221.0 EPA 8260D /5030AND1,3-Dichlorobenzene ug/L 8/29/228/29/221.0 EPA 8260D /5030AND1,3-Dichloropropane ug/L 8/29/228/29/221.0 EPA 8260D /5030AND1,4-Dichlorobenzene ug/L 8/29/228/29/221.0 EPA 8260D /5030AND2,2-Dichloropropane ug/L 8/29/228/29/221.0 EPA 8260D /5030AND2-Chlorotoluene ug/L 8/29/228/29/2210.0 EPA 8260D /5030AND2-Nitropropane ug/L 8/29/228/29/221.0 EPA 8260D /5030AND4-Chlorotoluene ug/L 8/29/228/29/2210.0 EPA 8260D /5030ANDAcetone ug/L 8/29/228/29/2210.0 EPA 8260D /5030ANDAcrylonitrile ug/L 8/29/228/29/220.4 EPA 8260D /5030ANDBenzene ug/L 8/29/228/29/221.0 EPA 8260D /5030ANDBromobenzene ug/L 8/29/228/29/221.0 EPA 8260D /5030ANDBromochloromethane ug/L 8/29/228/29/221.0 EPA 8260D /5030ANDBromodichloromethane ug/L 8/29/228/29/221.0 EPA 8260D /5030ANDBromoform Project Name: [none]CtF WO#: 22H2685 www.ChemtechFord.com Page 8 of 18Page 8 of 18 xx Chemtech-Ford Laboratories Serving the Intermountain West Since 1953 Certificate of Analysis 9632 South 500 West Sandy, UT 84070 O:(801) 262-7299 F: (866) 792-0093 www.ChemtechFord.com Utah Division of Water Quality Danny Ryan 195 North 1950 West Salt Lake City, UT 84116 PO#: Receipt: Date Reported: Project Name: 7CRECEARTN 8/26/22 14:09 @ 15.0 °C 9/6/2022 [none] Sample ID: Upstream Weber (cont.) Lab ID: 22H2685-03Matrix: Water Flag(s)Units Analysis Date/Time Date Sampled: 8/25/22 11:20 Preparation Date/Time Sampled By: Daniel Ryan Minimum Reporting Limit MethodResult Volatile Organic Compounds (cont.) ug/L 8/29/228/29/221.0 EPA 8260D /5030ANDBromomethane ug/L 8/29/228/29/221.0 EPA 8260D /5030ANDCarbon Disulfide ug/L 8/29/228/29/221.0 EPA 8260D /5030ANDCarbon Tetrachloride ug/L 8/29/228/29/221.0 EPA 8260D /5030ANDChlorobenzene ug/L 8/29/228/29/221.0 EPA 8260D /5030ANDChloroethane ug/L 8/29/228/29/221.0 EPA 8260D /5030ANDChloroform ug/L 8/29/228/29/221.0 EPA 8260D /5030ANDChloromethane ug/L 8/29/228/29/221.0 EPA 8260D /5030ANDcis-1,2-Dichloroethene ug/L 8/29/228/29/221.0 EPA 8260D /5030ANDcis-1,3-Dichloropropene ug/L 8/29/228/29/2220.0 EPA 8260D /5030ANDCyclohexanone ug/L 8/29/228/29/221.0 EPA 8260D /5030ANDDibromochloromethane ug/L 8/29/228/29/221.0 EPA 8260D /5030ANDDibromomethane ug/L 8/29/228/29/221.0 EPA 8260D /5030ANDDichlorodifluoromethane ug/L 8/29/228/29/2210.0 EPA 8260D /5030ANDEthyl Acetate ug/L 8/29/228/29/221.0 EPA 8260D /5030ANDEthylbenzene ug/L 8/29/228/29/221.0 EPA 8260D /5030ANDEthyl Ether ug/L 8/29/228/29/221.0 EPA 8260D /5030ANDHexachlorobutadiene ug/L 8/29/228/29/2210.0 EPA 8260D /5030ANDIsobutanol ug/L 8/29/228/29/221.0 EPA 8260D /5030ANDIsopropylbenzene ug/L 8/29/228/29/2210.0 EPA 8260D /5030ANDMethyl Ethyl Ketone ug/L 8/29/228/29/2210.0 EPA 8260D /5030ANDMethyl Isobutyl Ketone ug/L 8/29/228/29/222.0 EPA 8260D /5030ANDMethylene Chloride ug/L 8/29/228/29/221.0 EPA 8260D /5030ANDMethyl-tert-butyl ether (MTBE) ug/L 8/29/228/29/221.0 EPA 8260D /5030ANDNaphthalene ug/L J-LOW8/29/228/29/2240.0 EPA 8260D /5030ANDn-Butyl Alcohol ug/L 8/29/228/29/221.0 EPA 8260D /5030ANDn-Butylbenzene ug/L J-LOW8/29/228/29/2220.0 EPA 8260D /5030ANDNitrobenzene ug/L 8/29/228/29/221.0 EPA 8260D /5030ANDn-Propyl Benzene ug/L 8/29/228/29/221.0 EPA 8260D /5030ANDp-Isopropyltoluene ug/L 8/29/228/29/221.0 EPA 8260D /5030ANDsec-Butyl Benzene ug/L 8/29/228/29/221.0 EPA 8260D /5030ANDStyrene ug/L 8/29/228/29/221.0 EPA 8260D /5030ANDtert-Butylbenzene ug/L 8/29/228/29/221.0 EPA 8260D /5030ANDTetrachloroethene ug/L 8/29/228/29/221.0 EPA 8260D /5030ANDToluene ug/L 8/29/228/29/221.0 EPA 8260D /5030ANDtrans-1,2-Dichloroethene ug/L 8/29/228/29/221.0 EPA 8260D /5030ANDtrans-1,3-Dichloropropene ug/L 8/29/228/29/221.0 EPA 8260D /5030ANDTrichloroethene Project Name: [none]CtF WO#: 22H2685 www.ChemtechFord.com Page 9 of 18Page 9 of 18 xx Chemtech-Ford Laboratories Serving the Intermountain West Since 1953 Certificate of Analysis 9632 South 500 West Sandy, UT 84070 O:(801) 262-7299 F: (866) 792-0093 www.ChemtechFord.com Utah Division of Water Quality Danny Ryan 195 North 1950 West Salt Lake City, UT 84116 PO#: Receipt: Date Reported: Project Name: 7CRECEARTN 8/26/22 14:09 @ 15.0 °C 9/6/2022 [none] Sample ID: Upstream Weber (cont.) Lab ID: 22H2685-03Matrix: Water Flag(s)Units Analysis Date/Time Date Sampled: 8/25/22 11:20 Preparation Date/Time Sampled By: Daniel Ryan Minimum Reporting Limit MethodResult Volatile Organic Compounds (cont.) ug/L 8/29/228/29/221.0 EPA 8260D /5030ANDTrichlorofluoromethane ug/L 8/29/228/29/221.0 EPA 8260D /5030ANDVinyl Chloride ug/L 8/29/228/29/221.0 EPA 8260D /5030ANDXylenes, total Project Name: [none]CtF WO#: 22H2685 www.ChemtechFord.com Page 10 of 18Page 10 of 18 xx Chemtech-Ford Laboratories Serving the Intermountain West Since 1953 Certificate of Analysis 9632 South 500 West Sandy, UT 84070 O:(801) 262-7299 F: (866) 792-0093 www.ChemtechFord.com Utah Division of Water Quality Danny Ryan 195 North 1950 West Salt Lake City, UT 84116 PO#: Receipt: Date Reported: Project Name: 7CRECEARTN 8/26/22 14:09 @ 15.0 °C 9/6/2022 [none] Sample ID: Wilson Canal Lab ID: 22H2685-04Matrix: Water Flag(s)Units Analysis Date/Time Date Sampled: 8/25/22 11:50 Preparation Date/Time Sampled By: Daniel Ryan Minimum Reporting Limit MethodResult Inorganic mg/L 8/31/22 15:088/26/22 16:135SM 5210 B399Biochemical Oxygen Demand mg/L 9/1/228/30/225EPA 1664A9Oil & Grease (HEM) mg/L 8/29/228/29/2220SM 2540 D26Total Suspended Solids (TSS) Volatile Organic Compounds ug/L 8/29/228/29/221.0 EPA 8260D /5030AND1,1,1,2-Tetrachloroethane ug/L 8/29/228/29/221.0 EPA 8260D /5030AND1,1,1-Trichloroethane ug/L 8/29/228/29/221.0 EPA 8260D /5030AND1,1,2,2-Tetrachloroethane ug/L 8/29/228/29/221.0 EPA 8260D /5030AND1,1,2-Trichloroethane ug/L 8/29/228/29/221.0 EPA 8260D /5030AND1,1,2-Trichlorotrifluoroethane ug/L 8/29/228/29/221.0 EPA 8260D /5030AND1,1-Dichloroethane ug/L 8/29/228/29/221.0 EPA 8260D /5030AND1,1-Dichloroethene ug/L 8/29/228/29/221.0 EPA 8260D /5030AND1,1-Dichloropropene ug/L 8/29/228/29/2220.0 EPA 8260D /5030AND2-Hexanone ug/L 8/29/228/29/221.0 EPA 8260D /5030AND1,2,3-Trichlorobenzene ug/L 8/29/228/29/221.0 EPA 8260D /5030AND1,2,3-Trichloropropane ug/L 8/29/228/29/221.0 EPA 8260D /5030AND1,2,4-Trichlorobenzene ug/L J8/29/228/29/221.0 EPA 8260D /5030A0.41,2,4-Trimethylbenzene ug/L 8/29/228/29/221.0 EPA 8260D /5030AND1,2-Dibromo-3-chloropropane ug/L 8/29/228/29/221.0 EPA 8260D /5030AND1,2-Dibromoethane (EDB) ug/L 8/29/228/29/221.0 EPA 8260D /5030AND1,2-Dichlorobenzene ug/L 8/29/228/29/221.0 EPA 8260D /5030AND1,2-Dichloroethane ug/L 8/29/228/29/221.0 EPA 8260D /5030AND1,2-Dichloropropane ug/L 8/29/228/29/221.0 EPA 8260D /5030AND1,3,5-Trimethylbenzene ug/L 8/29/228/29/221.0 EPA 8260D /5030AND1,3-Dichlorobenzene ug/L 8/29/228/29/221.0 EPA 8260D /5030AND1,3-Dichloropropane ug/L 8/29/228/29/221.0 EPA 8260D /5030AND1,4-Dichlorobenzene ug/L 8/29/228/29/221.0 EPA 8260D /5030AND2,2-Dichloropropane ug/L 8/29/228/29/221.0 EPA 8260D /5030AND2-Chlorotoluene ug/L 8/29/228/29/2210.0 EPA 8260D /5030AND2-Nitropropane ug/L 8/29/228/29/221.0 EPA 8260D /5030AND4-Chlorotoluene ug/L 8/29/228/29/2210.0 EPA 8260D /5030A60.8Acetone ug/L 8/29/228/29/2210.0 EPA 8260D /5030ANDAcrylonitrile ug/L 8/29/228/29/220.4 EPA 8260D /5030ANDBenzene ug/L 8/29/228/29/221.0 EPA 8260D /5030ANDBromobenzene ug/L 8/29/228/29/221.0 EPA 8260D /5030ANDBromochloromethane ug/L 8/29/228/29/221.0 EPA 8260D /5030ANDBromodichloromethane ug/L 8/29/228/29/221.0 EPA 8260D /5030ANDBromoform Project Name: [none]CtF WO#: 22H2685 www.ChemtechFord.com Page 11 of 18Page 11 of 18 xx Chemtech-Ford Laboratories Serving the Intermountain West Since 1953 Certificate of Analysis 9632 South 500 West Sandy, UT 84070 O:(801) 262-7299 F: (866) 792-0093 www.ChemtechFord.com Utah Division of Water Quality Danny Ryan 195 North 1950 West Salt Lake City, UT 84116 PO#: Receipt: Date Reported: Project Name: 7CRECEARTN 8/26/22 14:09 @ 15.0 °C 9/6/2022 [none] Sample ID: Wilson Canal (cont.) Lab ID: 22H2685-04Matrix: Water Flag(s)Units Analysis Date/Time Date Sampled: 8/25/22 11:50 Preparation Date/Time Sampled By: Daniel Ryan Minimum Reporting Limit MethodResult Volatile Organic Compounds (cont.) ug/L 8/29/228/29/221.0 EPA 8260D /5030ANDBromomethane ug/L 8/29/228/29/221.0 EPA 8260D /5030A1.3Carbon Disulfide ug/L 8/29/228/29/221.0 EPA 8260D /5030ANDCarbon Tetrachloride ug/L 8/29/228/29/221.0 EPA 8260D /5030ANDChlorobenzene ug/L 8/29/228/29/221.0 EPA 8260D /5030ANDChloroethane ug/L 8/29/228/29/221.0 EPA 8260D /5030ANDChloroform ug/L 8/29/228/29/221.0 EPA 8260D /5030ANDChloromethane ug/L 8/29/228/29/221.0 EPA 8260D /5030ANDcis-1,2-Dichloroethene ug/L 8/29/228/29/221.0 EPA 8260D /5030ANDcis-1,3-Dichloropropene ug/L 8/29/228/29/2220.0 EPA 8260D /5030ANDCyclohexanone ug/L 8/29/228/29/221.0 EPA 8260D /5030ANDDibromochloromethane ug/L 8/29/228/29/221.0 EPA 8260D /5030ANDDibromomethane ug/L 8/29/228/29/221.0 EPA 8260D /5030ANDDichlorodifluoromethane ug/L 8/29/228/29/2210.0 EPA 8260D /5030ANDEthyl Acetate ug/L 8/29/228/29/221.0 EPA 8260D /5030ANDEthylbenzene ug/L 8/29/228/29/221.0 EPA 8260D /5030ANDEthyl Ether ug/L 8/29/228/29/221.0 EPA 8260D /5030ANDHexachlorobutadiene ug/L 8/29/228/29/2210.0 EPA 8260D /5030A73.2Isobutanol ug/L 8/29/228/29/221.0 EPA 8260D /5030ANDIsopropylbenzene ug/L 8/29/228/29/2210.0 EPA 8260D /5030A66.3Methyl Ethyl Ketone ug/L 8/29/228/29/2210.0 EPA 8260D /5030A39.3Methyl Isobutyl Ketone ug/L 8/29/228/29/222.0 EPA 8260D /5030ANDMethylene Chloride ug/L 8/29/228/29/221.0 EPA 8260D /5030ANDMethyl-tert-butyl ether (MTBE) ug/L 8/29/228/29/221.0 EPA 8260D /5030ANDNaphthalene ug/L J-LOW8/29/228/29/2240.0 EPA 8260D /5030ANDn-Butyl Alcohol ug/L 8/29/228/29/221.0 EPA 8260D /5030ANDn-Butylbenzene ug/L J-LOW8/29/228/29/2220.0 EPA 8260D /5030ANDNitrobenzene ug/L 8/29/228/29/221.0 EPA 8260D /5030ANDn-Propyl Benzene ug/L 8/29/228/29/221.0 EPA 8260D /5030ANDp-Isopropyltoluene ug/L 8/29/228/29/221.0 EPA 8260D /5030ANDsec-Butyl Benzene ug/L 8/29/228/29/221.0 EPA 8260D /5030ANDStyrene ug/L 8/29/228/29/221.0 EPA 8260D /5030ANDtert-Butylbenzene ug/L 8/29/228/29/221.0 EPA 8260D /5030ANDTetrachloroethene ug/L 8/29/228/29/221.0 EPA 8260D /5030A75.2Toluene ug/L 8/29/228/29/221.0 EPA 8260D /5030ANDtrans-1,2-Dichloroethene ug/L 8/29/228/29/221.0 EPA 8260D /5030ANDtrans-1,3-Dichloropropene ug/L 8/29/228/29/221.0 EPA 8260D /5030ANDTrichloroethene Project Name: [none]CtF WO#: 22H2685 www.ChemtechFord.com Page 12 of 18Page 12 of 18 xx Chemtech-Ford Laboratories Serving the Intermountain West Since 1953 Certificate of Analysis 9632 South 500 West Sandy, UT 84070 O:(801) 262-7299 F: (866) 792-0093 www.ChemtechFord.com Utah Division of Water Quality Danny Ryan 195 North 1950 West Salt Lake City, UT 84116 PO#: Receipt: Date Reported: Project Name: 7CRECEARTN 8/26/22 14:09 @ 15.0 °C 9/6/2022 [none] Sample ID: Wilson Canal (cont.) Lab ID: 22H2685-04Matrix: Water Flag(s)Units Analysis Date/Time Date Sampled: 8/25/22 11:50 Preparation Date/Time Sampled By: Daniel Ryan Minimum Reporting Limit MethodResult Volatile Organic Compounds (cont.) ug/L 8/29/228/29/221.0 EPA 8260D /5030ANDTrichlorofluoromethane ug/L 8/29/228/29/221.0 EPA 8260D /5030ANDVinyl Chloride ug/L 8/29/228/29/221.0 EPA 8260D /5030ANDXylenes, total Project Name: [none]CtF WO#: 22H2685 www.ChemtechFord.com Page 13 of 18Page 13 of 18 xx Chemtech-Ford Laboratories Serving the Intermountain West Since 1953 Certificate of Analysis 9632 South 500 West Sandy, UT 84070 O:(801) 262-7299 F: (866) 792-0093 www.ChemtechFord.com Utah Division of Water Quality Danny Ryan 195 North 1950 West Salt Lake City, UT 84116 PO#: Receipt: Date Reported: Project Name: 7CRECEARTN 8/26/22 14:09 @ 15.0 °C 9/6/2022 [none] Sample ID: RE Drainage Lab ID: 22H2685-05Matrix: Water Flag(s)Units Analysis Date/Time Date Sampled: 8/25/22 12:20 Preparation Date/Time Sampled By: Daniel Ryan Minimum Reporting Limit MethodResult Inorganic mg/L 8/31/22 15:128/26/22 16:135SM 5210 B11200Biochemical Oxygen Demand mg/L E9/1/228/30/225EPA 1664A16000Oil & Grease (HEM) mg/L 8/29/228/29/22200SM 2540 D19300Total Suspended Solids (TSS) Volatile Organic Compounds ug/L 8/29/228/29/221.0 EPA 8260D /5030AND1,1,1,2-Tetrachloroethane ug/L 8/29/228/29/221.0 EPA 8260D /5030AND1,1,1-Trichloroethane ug/L 8/29/228/29/221.0 EPA 8260D /5030AND1,1,2,2-Tetrachloroethane ug/L 8/29/228/29/221.0 EPA 8260D /5030AND1,1,2-Trichloroethane ug/L 8/29/228/29/221.0 EPA 8260D /5030AND1,1,2-Trichlorotrifluoroethane ug/L 8/29/228/29/221.0 EPA 8260D /5030AND1,1-Dichloroethane ug/L 8/29/228/29/221.0 EPA 8260D /5030AND1,1-Dichloroethene ug/L 8/29/228/29/221.0 EPA 8260D /5030AND1,1-Dichloropropene ug/L 8/29/228/29/2220.0 EPA 8260D /5030AND2-Hexanone ug/L 8/29/228/29/221.0 EPA 8260D /5030AND1,2,3-Trichlorobenzene ug/L 8/29/228/29/221.0 EPA 8260D /5030AND1,2,3-Trichloropropane ug/L 8/29/228/29/221.0 EPA 8260D /5030AND1,2,4-Trichlorobenzene ug/L 8/29/228/29/221.0 EPA 8260D /5030AND1,2,4-Trimethylbenzene ug/L 8/29/228/29/221.0 EPA 8260D /5030AND1,2-Dibromo-3-chloropropane ug/L 8/29/228/29/221.0 EPA 8260D /5030AND1,2-Dibromoethane (EDB) ug/L 8/29/228/29/221.0 EPA 8260D /5030AND1,2-Dichlorobenzene ug/L 8/29/228/29/221.0 EPA 8260D /5030AND1,2-Dichloroethane ug/L 8/29/228/29/221.0 EPA 8260D /5030AND1,2-Dichloropropane ug/L 8/29/228/29/221.0 EPA 8260D /5030AND1,3,5-Trimethylbenzene ug/L 8/29/228/29/221.0 EPA 8260D /5030AND1,3-Dichlorobenzene ug/L 8/29/228/29/221.0 EPA 8260D /5030AND1,3-Dichloropropane ug/L 8/29/228/29/221.0 EPA 8260D /5030AND1,4-Dichlorobenzene ug/L 8/29/228/29/221.0 EPA 8260D /5030AND2,2-Dichloropropane ug/L 8/29/228/29/221.0 EPA 8260D /5030AND2-Chlorotoluene ug/L 8/29/228/29/2210.0 EPA 8260D /5030AND2-Nitropropane ug/L 8/29/228/29/221.0 EPA 8260D /5030AND4-Chlorotoluene ug/L 8/29/228/29/2210.0 EPA 8260D /5030A10.8Acetone ug/L 8/29/228/29/2210.0 EPA 8260D /5030ANDAcrylonitrile ug/L 8/29/228/29/220.4 EPA 8260D /5030ANDBenzene ug/L 8/29/228/29/221.0 EPA 8260D /5030ANDBromobenzene ug/L 8/29/228/29/221.0 EPA 8260D /5030ANDBromochloromethane ug/L 8/29/228/29/221.0 EPA 8260D /5030ANDBromodichloromethane ug/L 8/29/228/29/221.0 EPA 8260D /5030ANDBromoform Project Name: [none]CtF WO#: 22H2685 www.ChemtechFord.com Page 14 of 18Page 14 of 18 xx Chemtech-Ford Laboratories Serving the Intermountain West Since 1953 Certificate of Analysis 9632 South 500 West Sandy, UT 84070 O:(801) 262-7299 F: (866) 792-0093 www.ChemtechFord.com Utah Division of Water Quality Danny Ryan 195 North 1950 West Salt Lake City, UT 84116 PO#: Receipt: Date Reported: Project Name: 7CRECEARTN 8/26/22 14:09 @ 15.0 °C 9/6/2022 [none] Sample ID: RE Drainage (cont.) Lab ID: 22H2685-05Matrix: Water Flag(s)Units Analysis Date/Time Date Sampled: 8/25/22 12:20 Preparation Date/Time Sampled By: Daniel Ryan Minimum Reporting Limit MethodResult Volatile Organic Compounds (cont.) ug/L 8/29/228/29/221.0 EPA 8260D /5030ANDBromomethane ug/L 8/29/228/29/221.0 EPA 8260D /5030ANDCarbon Disulfide ug/L 8/29/228/29/221.0 EPA 8260D /5030ANDCarbon Tetrachloride ug/L 8/29/228/29/221.0 EPA 8260D /5030ANDChlorobenzene ug/L 8/29/228/29/221.0 EPA 8260D /5030ANDChloroethane ug/L 8/29/228/29/221.0 EPA 8260D /5030ANDChloroform ug/L 8/29/228/29/221.0 EPA 8260D /5030ANDChloromethane ug/L 8/29/228/29/221.0 EPA 8260D /5030ANDcis-1,2-Dichloroethene ug/L 8/29/228/29/221.0 EPA 8260D /5030ANDcis-1,3-Dichloropropene ug/L 8/29/228/29/2220.0 EPA 8260D /5030ANDCyclohexanone ug/L 8/29/228/29/221.0 EPA 8260D /5030ANDDibromochloromethane ug/L 8/29/228/29/221.0 EPA 8260D /5030ANDDibromomethane ug/L 8/29/228/29/221.0 EPA 8260D /5030ANDDichlorodifluoromethane ug/L 8/29/228/29/2210.0 EPA 8260D /5030ANDEthyl Acetate ug/L 8/29/228/29/221.0 EPA 8260D /5030ANDEthylbenzene ug/L 8/29/228/29/221.0 EPA 8260D /5030ANDEthyl Ether ug/L 8/29/228/29/221.0 EPA 8260D /5030ANDHexachlorobutadiene ug/L 8/29/228/29/2210.0 EPA 8260D /5030ANDIsobutanol ug/L 8/29/228/29/221.0 EPA 8260D /5030ANDIsopropylbenzene ug/L 8/29/228/29/2210.0 EPA 8260D /5030ANDMethyl Ethyl Ketone ug/L 8/29/228/29/2210.0 EPA 8260D /5030ANDMethyl Isobutyl Ketone ug/L 8/29/228/29/222.0 EPA 8260D /5030ANDMethylene Chloride ug/L 8/29/228/29/221.0 EPA 8260D /5030ANDMethyl-tert-butyl ether (MTBE) ug/L 8/29/228/29/221.0 EPA 8260D /5030ANDNaphthalene ug/L J-LOW8/29/228/29/2240.0 EPA 8260D /5030ANDn-Butyl Alcohol ug/L 8/29/228/29/221.0 EPA 8260D /5030ANDn-Butylbenzene ug/L J-LOW8/29/228/29/2220.0 EPA 8260D /5030ANDNitrobenzene ug/L 8/29/228/29/221.0 EPA 8260D /5030ANDn-Propyl Benzene ug/L 8/29/228/29/221.0 EPA 8260D /5030ANDp-Isopropyltoluene ug/L 8/29/228/29/221.0 EPA 8260D /5030ANDsec-Butyl Benzene ug/L 8/29/228/29/221.0 EPA 8260D /5030ANDStyrene ug/L 8/29/228/29/221.0 EPA 8260D /5030ANDtert-Butylbenzene ug/L 8/29/228/29/221.0 EPA 8260D /5030ANDTetrachloroethene ug/L 8/29/228/29/221.0 EPA 8260D /5030ANDToluene ug/L 8/29/228/29/221.0 EPA 8260D /5030ANDtrans-1,2-Dichloroethene ug/L 8/29/228/29/221.0 EPA 8260D /5030ANDtrans-1,3-Dichloropropene ug/L 8/29/228/29/221.0 EPA 8260D /5030ANDTrichloroethene Project Name: [none]CtF WO#: 22H2685 www.ChemtechFord.com Page 15 of 18Page 15 of 18 xx Chemtech-Ford Laboratories Serving the Intermountain West Since 1953 Certificate of Analysis 9632 South 500 West Sandy, UT 84070 O:(801) 262-7299 F: (866) 792-0093 www.ChemtechFord.com Utah Division of Water Quality Danny Ryan 195 North 1950 West Salt Lake City, UT 84116 PO#: Receipt: Date Reported: Project Name: 7CRECEARTN 8/26/22 14:09 @ 15.0 °C 9/6/2022 [none] Sample ID: RE Drainage (cont.) Lab ID: 22H2685-05Matrix: Water Flag(s)Units Analysis Date/Time Date Sampled: 8/25/22 12:20 Preparation Date/Time Sampled By: Daniel Ryan Minimum Reporting Limit MethodResult Volatile Organic Compounds (cont.) ug/L 8/29/228/29/221.0 EPA 8260D /5030ANDTrichlorofluoromethane ug/L 8/29/228/29/221.0 EPA 8260D /5030ANDVinyl Chloride ug/L 8/29/228/29/221.0 EPA 8260D /5030ANDXylenes, total Project Name: [none]CtF WO#: 22H2685 www.ChemtechFord.com Page 16 of 18Page 16 of 18 xx Chemtech-Ford Laboratories Serving the Intermountain West Since 1953 Certificate of Analysis 9632 South 500 West Sandy, UT 84070 O:(801) 262-7299 F: (866) 792-0093 www.ChemtechFord.com Utah Division of Water Quality Danny Ryan 195 North 1950 West Salt Lake City, UT 84116 PO#: Receipt: Date Reported: Project Name: 7CRECEARTN 8/26/22 14:09 @ 15.0 °C 9/6/2022 [none] Report Footnotes Abbreviations ND = Not detected at the corresponding Minimum Reporting Limit (MRL). 1 mg/L = one milligram per liter or 1 mg/kg = one milligram per kilogram = 1 part per million. 1 ug/L = one microgram per liter or 1 ug/kg = one microgram per kilogram = 1 part per billion. 1 ng/L = one nanogram per liter or 1 ng/kg = one nanogram per kilogram = 1 part per trillion. Flag Descriptions E = The concentration indicated for this analyte is an estimated value above the calibration range of the instrument. This value is considered an estimate (CLP E-flag). J = Detected but below the Reporting Limit; therefore, result is an estimated concentration (CLP J-Flag). J-LOW = Estimated low due to low recovery of LCS or CCV Project Name: [none]CtF WO#: 22H2685 www.ChemtechFord.com Page 17 of 18Page 17 of 18 Page 18 of 18 ANALYTICAL REPORT October 14, 2022 Tetra Tech Inc. - UT Sample Delivery Group:L1540989 Samples Received:09/29/2022 Project Number: Description: Report To:Michael Egan 4750 West 2100 South Suite 400 Salt Lake City, UT 84120 Entire Report Reviewed By: October 14, 2022 [Preliminary Report] Chris Ward Project Manager Results relate only to the items tested or calibrated and are reported as rounded values. This test report shall not be reproduced, except in full, without written approval of the laboratory. Where applicable, sampling conducted by Pace Analytical National is performed per guidance provided in laboratory standard operating procedures ENV-SOP-MTJL-0067 and ENV-SOP-MTJL-0068. Where sampling conducted by the customer, results relate to the accuracy of the information provided, and as the samples are received. Pace Analytical National 12065 Lebanon Rd Mount Juliet, TN 37122 615-758-5858 800-767-5859 www.pacenational.com 1 Cp 2 Tc 3 Ss 4 Cn 5 Sr 6 Qc 7 Gl 8 Al 9 Sc ACCOUNT:PROJECT:SDG:DATE/TIME:PAGE: Tetra Tech Inc. - UT L1540989 10/14/22 15:00 1 of 34 October 14, 2022 Chris Ward Project Manager ACCOUNT:PROJECT:SDG:DATE/TIME:PAGE: Tetra Tech Inc. - UT L1540989 10/14/22 16:18 1 of 34 TABLE OF CONTENTS Cp: Cover Page 1 Tc: Table of Contents 2 Ss: Sample Summary 3 Cn: Case Narrative 4 Sr: Sample Results 5 RES-1 L1540989-01 5 RES-2 L1540989-02 9 Qc: Quality Control Summary 13 Mercury by Method 7470A 13 Metals (ICP) by Method 6010B 14 Volatile Organic Compounds (GC) by Method 8015D/GRO 16 Volatile Organic Compounds (GC/MS) by Method 8260B 17 Semi-Volatile Organic Compounds (GC) by Method 8015 23 Semi Volatile Organic Compounds (GC/MS) by Method 8270C 25 Gl: Glossary of Terms 32 Al: Accreditations & Locations 33 Sc: Sample Chain of Custody 34 1 Cp 2 Tc 3 Ss 4 Cn 5 Sr 6 Qc 7 Gl 8 Al 9 Sc ACCOUNT:PROJECT:SDG:DATE/TIME:PAGE: Tetra Tech Inc. - UT L1540989 10/14/22 15:00 2 of 34 ACCOUNT:PROJECT:SDG:DATE/TIME:PAGE: Tetra Tech Inc. - UT L1540989 10/14/22 16:18 2 of 34 SAMPLE SUMMARY Collected by Collected date/time Received date/time RES-1 L1540989-01 GW MW 09/26/22 14:40 09/29/22 13:00 Method Batch Dilution Preparation Analysis Analyst Location date/time date/time Mercury by Method 7470A WG1936171 1 10/13/22 08:14 10/14/22 12:27 ABL Mt. Juliet, TN Metals (ICP) by Method 6010B WG1940066 1 10/10/22 21:54 10/11/22 11:30 ZSA Mt. Juliet, TN Volatile Organic Compounds (GC) by Method 8015D/GRO WG1937632 10 10/06/22 04:10 10/06/22 04:10 DWR Mt. Juliet, TN Volatile Organic Compounds (GC/MS) by Method 8260B WG1936651 1 10/04/22 05:25 10/04/22 05:25 JAH Mt. Juliet, TN Semi-Volatile Organic Compounds (GC) by Method 8015 WG1940068 20 10/10/22 15:08 10/13/22 02:01 DMG Mt. Juliet, TN Semi Volatile Organic Compounds (GC/MS) by Method 8270C WG1935558 1 10/03/22 06:42 10/04/22 16:13 JNJ Mt. Juliet, TN Collected by Collected date/time Received date/time RES-2 L1540989-02 GW MW 09/26/22 15:25 09/29/22 13:00 Method Batch Dilution Preparation Analysis Analyst Location date/time date/time Mercury by Method 7470A WG1936171 1 10/13/22 08:14 10/14/22 12:34 ABL Mt. Juliet, TN Metals (ICP) by Method 6010B WG1940066 1 10/10/22 21:54 10/11/22 11:33 ZSA Mt. Juliet, TN Volatile Organic Compounds (GC) by Method 8015D/GRO WG1937632 10 10/06/22 04:32 10/06/22 04:32 DWR Mt. Juliet, TN Volatile Organic Compounds (GC/MS) by Method 8260B WG1936651 1 10/04/22 05:46 10/04/22 05:46 JAH Mt. Juliet, TN Semi-Volatile Organic Compounds (GC) by Method 8015 WG1938029 10 10/06/22 16:21 10/10/22 09:43 DMG Mt. Juliet, TN Semi Volatile Organic Compounds (GC/MS) by Method 8270C WG1935558 1 10/03/22 06:42 10/04/22 21:34 JNJ Mt. Juliet, TN 1 Cp 2 Tc 3 Ss 4 Cn 5 Sr 6 Qc 7 Gl 8 Al 9 Sc ACCOUNT:PROJECT:SDG:DATE/TIME:PAGE: Tetra Tech Inc. - UT L1540989 10/14/22 15:00 3 of 34 ACCOUNT:PROJECT:SDG:DATE/TIME:PAGE: Tetra Tech Inc. - UT L1540989 10/14/22 16:18 3 of 34 CASE NARRATIVE All sample aliquots were received at the correct temperature, in the proper containers, with the appropriate preservatives, and within method specified holding times, unless qualified or notated within the report. Where applicable, all MDL (LOD) and RDL (LOQ) values reported for environmental samples have been corrected for the dilution factor used in the analysis. All Method and Batch Quality Control are within established criteria except where addressed in this case narrative, a non-conformance form or properly qualified within the sample results. By my digital signature below, I affirm to the best of my knowledge, all problems/anomalies observed by the laboratory as having the potential to affect the quality of the data have been identified by the laboratory, and no information or data have been knowingly withheld that would affect the quality of the data. [Preliminary Report] Chris Ward Project Manager Sample Delivery Group (SDG) Narrative An aliquot for analysis was taken from the original container received due to volume requirements of the laboratory’s procedure. Rinsing of the original sample container for inclusion in the sample extraction was not performed. Lab Sample ID Project Sample ID Method L1540989-01 RES-1 8270C, 8015 L1540989-02 RES-2 8270C, 8015 1 Cp 2 Tc 3 Ss 4 Cn 5 Sr 6 Qc 7 Gl 8 Al 9 Sc ACCOUNT:PROJECT:SDG:DATE/TIME:PAGE: Tetra Tech Inc. - UT L1540989 10/14/22 15:00 4 of 34 Chris Ward Project Manager ACCOUNT:PROJECT:SDG:DATE/TIME:PAGE: Tetra Tech Inc. - UT L1540989 10/14/22 16:18 4 of 34 SAMPLE RESULTS - 01 L1540989 RES-1 Collected date/time: 09/26/22 14:40 Mercury by Method 7470A Result Qualifier RDL Dilution Analysis Batch Analyte mg/l mg/l date / time Mercury ND 0.000200 1 10/14/2022 12:27 WG1936171 Metals (ICP) by Method 6010B Result Qualifier RDL Dilution Analysis Batch Analyte mg/l mg/l date / time Antimony ND 0.0100 1 10/11/2022 11:30 WG1940066 Arsenic 0.0635 0.0100 1 10/11/2022 11:30 WG1940066 Beryllium ND 0.00200 1 10/11/2022 11:30 WG1940066 Cadmium ND 0.00200 1 10/11/2022 11:30 WG1940066 Chromium ND 0.0100 1 10/11/2022 11:30 WG1940066 Copper 0.0147 0.0100 1 10/11/2022 11:30 WG1940066 Lead ND 0.00600 1 10/11/2022 11:30 WG1940066 Nickel 0.0107 0.0100 1 10/11/2022 11:30 WG1940066 Selenium ND 0.0100 1 10/11/2022 11:30 WG1940066 Silver ND 0.00500 1 10/11/2022 11:30 WG1940066 Thallium ND 0.0100 1 10/11/2022 11:30 WG1940066 Zinc ND 0.0500 1 10/11/2022 11:30 WG1940066 Volatile Organic Compounds (GC) by Method 8015D/GRO Result Qualifier RDL Dilution Analysis Batch Analyte mg/l mg/l date / time TPH (GC/FID) Low Fraction ND 1.00 10 10/06/2022 04:10 WG1937632 (S) a,a,a-Trifluorotoluene(FID) 99.4 78.0-120 10/06/2022 04:10 WG1937632 Sample Narrative: L1540989-01 WG1937632: Lowest possible dilution due to sample foaming. Volatile Organic Compounds (GC/MS) by Method 8260B Result Qualifier RDL Dilution Analysis Batch Analyte mg/l mg/l date / time Acetone ND 0.0500 1 10/04/2022 05:25 WG1936651 Acrolein ND 0.0500 1 10/04/2022 05:25 WG1936651 Acrylonitrile ND 0.0100 1 10/04/2022 05:25 WG1936651 Benzene ND 0.00100 1 10/04/2022 05:25 WG1936651 Bromobenzene ND 0.00100 1 10/04/2022 05:25 WG1936651 Bromodichloromethane ND 0.00100 1 10/04/2022 05:25 WG1936651 Bromoform ND 0.00100 1 10/04/2022 05:25 WG1936651 Bromomethane ND 0.00500 1 10/04/2022 05:25 WG1936651 n-Butylbenzene ND 0.00100 1 10/04/2022 05:25 WG1936651 sec-Butylbenzene ND 0.00100 1 10/04/2022 05:25 WG1936651 tert-Butylbenzene ND 0.00100 1 10/04/2022 05:25 WG1936651 Carbon tetrachloride ND 0.00100 1 10/04/2022 05:25 WG1936651 Chlorobenzene ND 0.00100 1 10/04/2022 05:25 WG1936651 Chlorodibromomethane ND 0.00100 1 10/04/2022 05:25 WG1936651 Chloroethane ND 0.00500 1 10/04/2022 05:25 WG1936651 Chloroform ND 0.00500 1 10/04/2022 05:25 WG1936651 Chloromethane ND 0.00250 1 10/04/2022 05:25 WG1936651 2-Chlorotoluene ND 0.00100 1 10/04/2022 05:25 WG1936651 4-Chlorotoluene ND 0.00100 1 10/04/2022 05:25 WG1936651 1,2-Dibromo-3-Chloropropane ND 0.00500 1 10/04/2022 05:25 WG1936651 1,2-Dibromoethane ND 0.00100 1 10/04/2022 05:25 WG1936651 Dibromomethane ND 0.00100 1 10/04/2022 05:25 WG1936651 1,2-Dichlorobenzene ND 0.00100 1 10/04/2022 05:25 WG1936651 1,3-Dichlorobenzene ND 0.00100 1 10/04/2022 05:25 WG1936651 1 Cp 2 Tc 3 Ss 4 Cn 5 Sr 6 Qc 7 Gl 8 Al 9 Sc ACCOUNT:PROJECT:SDG:DATE/TIME:PAGE: Tetra Tech Inc. - UT L1540989 10/14/22 15:00 5 of 34 ACCOUNT:PROJECT:SDG:DATE/TIME:PAGE: Tetra Tech Inc. - UT L1540989 10/14/22 16:18 5 of 34 SAMPLE RESULTS - 01 L1540989 RES-1 Collected date/time: 09/26/22 14:40 Volatile Organic Compounds (GC/MS) by Method 8260B Result Qualifier RDL Dilution Analysis Batch Analyte mg/l mg/l date / time 1,4-Dichlorobenzene ND 0.00100 1 10/04/2022 05:25 WG1936651 Dichlorodifluoromethane ND 0.00500 1 10/04/2022 05:25 WG1936651 1,1-Dichloroethane ND 0.00100 1 10/04/2022 05:25 WG1936651 1,2-Dichloroethane ND 0.00100 1 10/04/2022 05:25 WG1936651 1,1-Dichloroethene ND 0.00100 1 10/04/2022 05:25 WG1936651 cis-1,2-Dichloroethene ND 0.00100 1 10/04/2022 05:25 WG1936651 trans-1,2-Dichloroethene ND 0.00100 1 10/04/2022 05:25 WG1936651 1,2-Dichloropropane ND 0.00100 1 10/04/2022 05:25 WG1936651 1,1-Dichloropropene ND 0.00100 1 10/04/2022 05:25 WG1936651 1,3-Dichloropropane ND 0.00100 1 10/04/2022 05:25 WG1936651 cis-1,3-Dichloropropene ND 0.00100 1 10/04/2022 05:25 WG1936651 trans-1,3-Dichloropropene ND 0.00100 1 10/04/2022 05:25 WG1936651 2,2-Dichloropropane ND 0.00100 1 10/04/2022 05:25 WG1936651 Di-isopropyl ether ND 0.00100 1 10/04/2022 05:25 WG1936651 Ethylbenzene ND 0.00100 1 10/04/2022 05:25 WG1936651 Hexachloro-1,3-butadiene ND 0.00100 1 10/04/2022 05:25 WG1936651 Isopropylbenzene ND 0.00100 1 10/04/2022 05:25 WG1936651 p-Isopropyltoluene ND 0.00100 1 10/04/2022 05:25 WG1936651 2-Butanone (MEK)0.0566 0.0100 1 10/04/2022 05:25 WG1936651 Methylene Chloride ND 0.00500 1 10/04/2022 05:25 WG1936651 4-Methyl-2-pentanone (MIBK) ND 0.0100 1 10/04/2022 05:25 WG1936651 Methyl tert-butyl ether ND 0.00100 1 10/04/2022 05:25 WG1936651 Naphthalene ND 0.00500 1 10/04/2022 05:25 WG1936651 n-Propylbenzene ND 0.00100 1 10/04/2022 05:25 WG1936651 Styrene ND 0.00100 1 10/04/2022 05:25 WG1936651 1,1,1,2-Tetrachloroethane ND 0.00100 1 10/04/2022 05:25 WG1936651 1,1,2,2-Tetrachloroethane ND 0.00100 1 10/04/2022 05:25 WG1936651 1,1,2-Trichlorotrifluoroethane ND 0.00100 1 10/04/2022 05:25 WG1936651 Tetrachloroethene ND 0.00100 1 10/04/2022 05:25 WG1936651 Toluene 0.00162 0.00100 1 10/04/2022 05:25 WG1936651 1,2,3-Trichlorobenzene ND 0.00100 1 10/04/2022 05:25 WG1936651 1,2,4-Trichlorobenzene ND 0.00100 1 10/04/2022 05:25 WG1936651 1,1,1-Trichloroethane ND 0.00100 1 10/04/2022 05:25 WG1936651 1,1,2-Trichloroethane ND 0.00100 1 10/04/2022 05:25 WG1936651 Trichloroethene ND 0.00100 1 10/04/2022 05:25 WG1936651 Trichlorofluoromethane ND 0.00500 1 10/04/2022 05:25 WG1936651 1,2,3-Trichloropropane ND 0.00250 1 10/04/2022 05:25 WG1936651 1,2,4-Trimethylbenzene ND 0.00100 1 10/04/2022 05:25 WG1936651 1,2,3-Trimethylbenzene ND 0.00100 1 10/04/2022 05:25 WG1936651 1,3,5-Trimethylbenzene ND 0.00100 1 10/04/2022 05:25 WG1936651 Vinyl chloride ND 0.00100 1 10/04/2022 05:25 WG1936651 Xylenes, Total ND 0.00300 1 10/04/2022 05:25 WG1936651 (S) Toluene-d8 118 80.0-120 10/04/2022 05:25 WG1936651 (S) 4-Bromofluorobenzene 103 77.0-126 10/04/2022 05:25 WG1936651 (S) 1,2-Dichloroethane-d4 74.9 70.0-130 10/04/2022 05:25 WG1936651 Semi-Volatile Organic Compounds (GC) by Method 8015 Result Qualifier RDL Dilution Analysis Batch Analyte mg/l mg/l date / time C10-C28 Diesel Range 3.41 J3 J5 2.00 20 10/13/2022 02:01 WG1940068 C28-C40 Oil Range 6.55 2.00 20 10/13/2022 02:01 WG1940068 (S) o-Terphenyl 0.000 J7 31.0-160 10/13/2022 02:01 WG1940068 1 Cp 2 Tc 3 Ss 4 Cn 5 Sr 6 Qc 7 Gl 8 Al 9 Sc ACCOUNT:PROJECT:SDG:DATE/TIME:PAGE: Tetra Tech Inc. - UT L1540989 10/14/22 15:00 6 of 34 ACCOUNT:PROJECT:SDG:DATE/TIME:PAGE: Tetra Tech Inc. - UT L1540989 10/14/22 16:18 6 of 34 SAMPLE RESULTS - 01 L1540989 RES-1 Collected date/time: 09/26/22 14:40 Semi Volatile Organic Compounds (GC/MS) by Method 8270C Result Qualifier RDL Dilution Analysis Batch Analyte mg/l mg/l date / time Acenaphthene ND 0.00100 1 10/04/2022 16:13 WG1935558 Acenaphthylene ND 0.00100 1 10/04/2022 16:13 WG1935558 Anthracene ND 0.00100 1 10/04/2022 16:13 WG1935558 Benzidine ND 0.0100 1 10/04/2022 16:13 WG1935558 Benzo(a)anthracene ND 0.00100 1 10/04/2022 16:13 WG1935558 Benzo(b)fluoranthene ND 0.00100 1 10/04/2022 16:13 WG1935558 Benzo(k)fluoranthene ND 0.00100 1 10/04/2022 16:13 WG1935558 Benzo(g,h,i)perylene ND 0.00100 1 10/04/2022 16:13 WG1935558 Benzo(a)pyrene ND 0.00100 1 10/04/2022 16:13 WG1935558 Bis(2-chlorethoxy)methane ND 0.0100 1 10/04/2022 16:13 WG1935558 Bis(2-chloroethyl)ether ND 0.0100 1 10/04/2022 16:13 WG1935558 2,2-Oxybis(1-Chloropropane) ND 0.0100 1 10/04/2022 16:13 WG1935558 4-Bromophenyl-phenylether ND 0.0100 1 10/04/2022 16:13 WG1935558 2-Chloronaphthalene ND 0.00100 1 10/04/2022 16:13 WG1935558 4-Chlorophenyl-phenylether ND 0.0100 1 10/04/2022 16:13 WG1935558 Chrysene ND 0.00100 1 10/04/2022 16:13 WG1935558 Dibenz(a,h)anthracene ND 0.00100 1 10/04/2022 16:13 WG1935558 1,2-Dichlorobenzene ND 0.0100 1 10/04/2022 16:13 WG1935558 1,3-Dichlorobenzene ND 0.0100 1 10/04/2022 16:13 WG1935558 1,4-Dichlorobenzene ND 0.0100 1 10/04/2022 16:13 WG1935558 3,3-Dichlorobenzidine ND 0.0100 1 10/04/2022 16:13 WG1935558 2,4-Dinitrotoluene ND 0.0100 1 10/04/2022 16:13 WG1935558 2,6-Dinitrotoluene ND 0.0100 1 10/04/2022 16:13 WG1935558 Fluoranthene ND 0.00100 1 10/04/2022 16:13 WG1935558 Fluorene ND 0.00100 1 10/04/2022 16:13 WG1935558 Hexachlorobenzene ND 0.00100 1 10/04/2022 16:13 WG1935558 Hexachloro-1,3-butadiene ND 0.0100 1 10/04/2022 16:13 WG1935558 Hexachlorocyclopentadiene ND 0.0100 1 10/04/2022 16:13 WG1935558 Hexachloroethane ND 0.0100 1 10/04/2022 16:13 WG1935558 Indeno(1,2,3-cd)pyrene ND 0.00100 1 10/04/2022 16:13 WG1935558 Isophorone ND 0.0100 1 10/04/2022 16:13 WG1935558 Naphthalene ND 0.00100 1 10/04/2022 16:13 WG1935558 Nitrobenzene ND 0.0100 1 10/04/2022 16:13 WG1935558 n-Nitrosodimethylamine ND 0.0100 1 10/04/2022 16:13 WG1935558 n-Nitrosodiphenylamine ND 0.0100 1 10/04/2022 16:13 WG1935558 n-Nitrosodi-n-propylamine ND 0.0100 1 10/04/2022 16:13 WG1935558 Phenanthrene ND 0.00100 1 10/04/2022 16:13 WG1935558 Benzylbutyl phthalate ND 0.00300 1 10/04/2022 16:13 WG1935558 Bis(2-ethylhexyl)phthalate ND 0.00300 1 10/04/2022 16:13 WG1935558 Di-n-butyl phthalate ND 0.00300 1 10/04/2022 16:13 WG1935558 Diethyl phthalate ND 0.00300 1 10/04/2022 16:13 WG1935558 Dimethyl phthalate ND 0.00300 1 10/04/2022 16:13 WG1935558 Di-n-octyl phthalate ND 0.00300 1 10/04/2022 16:13 WG1935558 Pyrene ND 0.00100 1 10/04/2022 16:13 WG1935558 1,2,4-Trichlorobenzene ND 0.0100 1 10/04/2022 16:13 WG1935558 4-Chloro-3-methylphenol ND 0.0100 1 10/04/2022 16:13 WG1935558 2-Chlorophenol ND 0.0100 1 10/04/2022 16:13 WG1935558 2,4-Dichlorophenol ND 0.0100 1 10/04/2022 16:13 WG1935558 2,4-Dimethylphenol ND 0.0100 1 10/04/2022 16:13 WG1935558 4,6-Dinitro-2-methylphenol ND 0.0100 1 10/04/2022 16:13 WG1935558 2,4-Dinitrophenol ND 0.0100 1 10/04/2022 16:13 WG1935558 2-Nitrophenol ND 0.0100 1 10/04/2022 16:13 WG1935558 4-Nitrophenol ND 0.0100 1 10/04/2022 16:13 WG1935558 Pentachlorophenol ND 0.0100 1 10/04/2022 16:13 WG1935558 Phenol ND 0.0100 1 10/04/2022 16:13 WG1935558 2,4,6-Trichlorophenol ND 0.0100 1 10/04/2022 16:13 WG1935558 1 Cp 2 Tc 3 Ss 4 Cn 5 Sr 6 Qc 7 Gl 8 Al 9 Sc ACCOUNT:PROJECT:SDG:DATE/TIME:PAGE: Tetra Tech Inc. - UT L1540989 10/14/22 15:00 7 of 34 ACCOUNT:PROJECT:SDG:DATE/TIME:PAGE: Tetra Tech Inc. - UT L1540989 10/14/22 16:18 7 of 34 SAMPLE RESULTS - 01 L1540989 RES-1 Collected date/time: 09/26/22 14:40 Semi Volatile Organic Compounds (GC/MS) by Method 8270C Result Qualifier RDL Dilution Analysis Batch Analyte mg/l mg/l date / time (S) 2-Fluorophenol 28.5 10.0-120 10/04/2022 16:13 WG1935558 (S) Phenol-d5 16.9 10.0-120 10/04/2022 16:13 WG1935558 (S) Nitrobenzene-d5 72.1 10.0-127 10/04/2022 16:13 WG1935558 (S) 2-Fluorobiphenyl 53.1 10.0-130 10/04/2022 16:13 WG1935558 (S) 2,4,6-Tribromophenol 52.0 10.0-155 10/04/2022 16:13 WG1935558 (S) p-Terphenyl-d14 33.7 10.0-128 10/04/2022 16:13 WG1935558 1 Cp 2 Tc 3 Ss 4 Cn 5 Sr 6 Qc 7 Gl 8 Al 9 Sc ACCOUNT:PROJECT:SDG:DATE/TIME:PAGE: Tetra Tech Inc. - UT L1540989 10/14/22 15:00 8 of 34 ACCOUNT:PROJECT:SDG:DATE/TIME:PAGE: Tetra Tech Inc. - UT L1540989 10/14/22 16:18 8 of 34 SAMPLE RESULTS - 02 L1540989 RES-2 Collected date/time: 09/26/22 15:25 Mercury by Method 7470A Result Qualifier RDL Dilution Analysis Batch Analyte mg/l mg/l date / time Mercury ND 0.000200 1 10/14/2022 12:34 WG1936171 Metals (ICP) by Method 6010B Result Qualifier RDL Dilution Analysis Batch Analyte mg/l mg/l date / time Antimony ND 0.0100 1 10/11/2022 11:33 WG1940066 Arsenic 0.0125 0.0100 1 10/11/2022 11:33 WG1940066 Beryllium ND 0.00200 1 10/11/2022 11:33 WG1940066 Cadmium ND 0.00200 1 10/11/2022 11:33 WG1940066 Chromium ND 0.0100 1 10/11/2022 11:33 WG1940066 Copper 0.0144 0.0100 1 10/11/2022 11:33 WG1940066 Lead ND 0.00600 1 10/11/2022 11:33 WG1940066 Nickel ND 0.0100 1 10/11/2022 11:33 WG1940066 Selenium ND 0.0100 1 10/11/2022 11:33 WG1940066 Silver ND 0.00500 1 10/11/2022 11:33 WG1940066 Thallium ND 0.0100 1 10/11/2022 11:33 WG1940066 Zinc ND 0.0500 1 10/11/2022 11:33 WG1940066 Volatile Organic Compounds (GC) by Method 8015D/GRO Result Qualifier RDL Dilution Analysis Batch Analyte mg/l mg/l date / time TPH (GC/FID) Low Fraction ND 1.00 10 10/06/2022 04:32 WG1937632 (S) a,a,a-Trifluorotoluene(FID) 105 78.0-120 10/06/2022 04:32 WG1937632 Sample Narrative: L1540989-02 WG1937632: Lowest possible dilution due to sample foaming. Volatile Organic Compounds (GC/MS) by Method 8260B Result Qualifier RDL Dilution Analysis Batch Analyte mg/l mg/l date / time Acetone ND 0.0500 1 10/04/2022 05:46 WG1936651 Acrolein ND 0.0500 1 10/04/2022 05:46 WG1936651 Acrylonitrile ND 0.0100 1 10/04/2022 05:46 WG1936651 Benzene ND 0.00100 1 10/04/2022 05:46 WG1936651 Bromobenzene ND 0.00100 1 10/04/2022 05:46 WG1936651 Bromodichloromethane ND 0.00100 1 10/04/2022 05:46 WG1936651 Bromoform ND 0.00100 1 10/04/2022 05:46 WG1936651 Bromomethane ND 0.00500 1 10/04/2022 05:46 WG1936651 n-Butylbenzene ND 0.00100 1 10/04/2022 05:46 WG1936651 sec-Butylbenzene ND 0.00100 1 10/04/2022 05:46 WG1936651 tert-Butylbenzene ND 0.00100 1 10/04/2022 05:46 WG1936651 Carbon tetrachloride ND 0.00100 1 10/04/2022 05:46 WG1936651 Chlorobenzene ND 0.00100 1 10/04/2022 05:46 WG1936651 Chlorodibromomethane ND 0.00100 1 10/04/2022 05:46 WG1936651 Chloroethane ND 0.00500 1 10/04/2022 05:46 WG1936651 Chloroform ND 0.00500 1 10/04/2022 05:46 WG1936651 Chloromethane ND 0.00250 1 10/04/2022 05:46 WG1936651 2-Chlorotoluene ND 0.00100 1 10/04/2022 05:46 WG1936651 4-Chlorotoluene ND 0.00100 1 10/04/2022 05:46 WG1936651 1,2-Dibromo-3-Chloropropane ND 0.00500 1 10/04/2022 05:46 WG1936651 1,2-Dibromoethane ND 0.00100 1 10/04/2022 05:46 WG1936651 Dibromomethane ND 0.00100 1 10/04/2022 05:46 WG1936651 1,2-Dichlorobenzene ND 0.00100 1 10/04/2022 05:46 WG1936651 1,3-Dichlorobenzene ND 0.00100 1 10/04/2022 05:46 WG1936651 1 Cp 2 Tc 3 Ss 4 Cn 5 Sr 6 Qc 7 Gl 8 Al 9 Sc ACCOUNT:PROJECT:SDG:DATE/TIME:PAGE: Tetra Tech Inc. - UT L1540989 10/14/22 15:00 9 of 34 ACCOUNT:PROJECT:SDG:DATE/TIME:PAGE: Tetra Tech Inc. - UT L1540989 10/14/22 16:18 9 of 34 SAMPLE RESULTS - 02 L1540989 RES-2 Collected date/time: 09/26/22 15:25 Volatile Organic Compounds (GC/MS) by Method 8260B Result Qualifier RDL Dilution Analysis Batch Analyte mg/l mg/l date / time 1,4-Dichlorobenzene ND 0.00100 1 10/04/2022 05:46 WG1936651 Dichlorodifluoromethane ND 0.00500 1 10/04/2022 05:46 WG1936651 1,1-Dichloroethane ND 0.00100 1 10/04/2022 05:46 WG1936651 1,2-Dichloroethane ND 0.00100 1 10/04/2022 05:46 WG1936651 1,1-Dichloroethene ND 0.00100 1 10/04/2022 05:46 WG1936651 cis-1,2-Dichloroethene ND 0.00100 1 10/04/2022 05:46 WG1936651 trans-1,2-Dichloroethene ND 0.00100 1 10/04/2022 05:46 WG1936651 1,2-Dichloropropane ND 0.00100 1 10/04/2022 05:46 WG1936651 1,1-Dichloropropene ND 0.00100 1 10/04/2022 05:46 WG1936651 1,3-Dichloropropane ND 0.00100 1 10/04/2022 05:46 WG1936651 cis-1,3-Dichloropropene ND 0.00100 1 10/04/2022 05:46 WG1936651 trans-1,3-Dichloropropene ND 0.00100 1 10/04/2022 05:46 WG1936651 2,2-Dichloropropane ND 0.00100 1 10/04/2022 05:46 WG1936651 Di-isopropyl ether ND 0.00100 1 10/04/2022 05:46 WG1936651 Ethylbenzene ND 0.00100 1 10/04/2022 05:46 WG1936651 Hexachloro-1,3-butadiene ND 0.00100 1 10/04/2022 05:46 WG1936651 Isopropylbenzene ND 0.00100 1 10/04/2022 05:46 WG1936651 p-Isopropyltoluene ND 0.00100 1 10/04/2022 05:46 WG1936651 2-Butanone (MEK)ND 0.0100 1 10/04/2022 05:46 WG1936651 Methylene Chloride ND 0.00500 1 10/04/2022 05:46 WG1936651 4-Methyl-2-pentanone (MIBK) ND 0.0100 1 10/04/2022 05:46 WG1936651 Methyl tert-butyl ether ND 0.00100 1 10/04/2022 05:46 WG1936651 Naphthalene ND 0.00500 1 10/04/2022 05:46 WG1936651 n-Propylbenzene ND 0.00100 1 10/04/2022 05:46 WG1936651 Styrene ND 0.00100 1 10/04/2022 05:46 WG1936651 1,1,1,2-Tetrachloroethane ND 0.00100 1 10/04/2022 05:46 WG1936651 1,1,2,2-Tetrachloroethane ND 0.00100 1 10/04/2022 05:46 WG1936651 1,1,2-Trichlorotrifluoroethane ND 0.00100 1 10/04/2022 05:46 WG1936651 Tetrachloroethene ND 0.00100 1 10/04/2022 05:46 WG1936651 Toluene 0.00414 0.00100 1 10/04/2022 05:46 WG1936651 1,2,3-Trichlorobenzene ND 0.00100 1 10/04/2022 05:46 WG1936651 1,2,4-Trichlorobenzene ND 0.00100 1 10/04/2022 05:46 WG1936651 1,1,1-Trichloroethane ND 0.00100 1 10/04/2022 05:46 WG1936651 1,1,2-Trichloroethane ND 0.00100 1 10/04/2022 05:46 WG1936651 Trichloroethene ND 0.00100 1 10/04/2022 05:46 WG1936651 Trichlorofluoromethane ND 0.00500 1 10/04/2022 05:46 WG1936651 1,2,3-Trichloropropane ND 0.00250 1 10/04/2022 05:46 WG1936651 1,2,4-Trimethylbenzene ND 0.00100 1 10/04/2022 05:46 WG1936651 1,2,3-Trimethylbenzene ND 0.00100 1 10/04/2022 05:46 WG1936651 1,3,5-Trimethylbenzene ND 0.00100 1 10/04/2022 05:46 WG1936651 Vinyl chloride ND 0.00100 1 10/04/2022 05:46 WG1936651 Xylenes, Total ND 0.00300 1 10/04/2022 05:46 WG1936651 (S) Toluene-d8 118 80.0-120 10/04/2022 05:46 WG1936651 (S) 4-Bromofluorobenzene 101 77.0-126 10/04/2022 05:46 WG1936651 (S) 1,2-Dichloroethane-d4 95.7 70.0-130 10/04/2022 05:46 WG1936651 Semi-Volatile Organic Compounds (GC) by Method 8015 Result Qualifier RDL Dilution Analysis Batch Analyte mg/l mg/l date / time C10-C28 Diesel Range 5.61 B 1.00 10 10/10/2022 09:43 WG1938029 C28-C40 Oil Range 7.58 B 1.00 10 10/10/2022 09:43 WG1938029 (S) o-Terphenyl 93.0 31.0-160 10/10/2022 09:43 WG1938029 1 Cp 2 Tc 3 Ss 4 Cn 5 Sr 6 Qc 7 Gl 8 Al 9 Sc ACCOUNT:PROJECT:SDG:DATE/TIME:PAGE: Tetra Tech Inc. - UT L1540989 10/14/22 15:00 10 of 34 ACCOUNT:PROJECT:SDG:DATE/TIME:PAGE: Tetra Tech Inc. - UT L1540989 10/14/22 16:18 10 of 34 SAMPLE RESULTS - 02 L1540989 RES-2 Collected date/time: 09/26/22 15:25 Semi Volatile Organic Compounds (GC/MS) by Method 8270C Result Qualifier RDL Dilution Analysis Batch Analyte mg/l mg/l date / time Acenaphthene ND 0.00100 1 10/04/2022 21:34 WG1935558 Acenaphthylene ND 0.00100 1 10/04/2022 21:34 WG1935558 Anthracene ND 0.00100 1 10/04/2022 21:34 WG1935558 Benzidine ND 0.0100 1 10/04/2022 21:34 WG1935558 Benzo(a)anthracene ND 0.00100 1 10/04/2022 21:34 WG1935558 Benzo(b)fluoranthene ND 0.00100 1 10/04/2022 21:34 WG1935558 Benzo(k)fluoranthene ND 0.00100 1 10/04/2022 21:34 WG1935558 Benzo(g,h,i)perylene ND 0.00100 1 10/04/2022 21:34 WG1935558 Benzo(a)pyrene ND 0.00100 1 10/04/2022 21:34 WG1935558 Bis(2-chlorethoxy)methane ND 0.0100 1 10/04/2022 21:34 WG1935558 Bis(2-chloroethyl)ether ND 0.0100 1 10/04/2022 21:34 WG1935558 2,2-Oxybis(1-Chloropropane) ND 0.0100 1 10/04/2022 21:34 WG1935558 4-Bromophenyl-phenylether ND 0.0100 1 10/04/2022 21:34 WG1935558 2-Chloronaphthalene ND 0.00100 1 10/04/2022 21:34 WG1935558 4-Chlorophenyl-phenylether ND 0.0100 1 10/04/2022 21:34 WG1935558 Chrysene ND 0.00100 1 10/04/2022 21:34 WG1935558 Dibenz(a,h)anthracene ND 0.00100 1 10/04/2022 21:34 WG1935558 1,2-Dichlorobenzene ND 0.0100 1 10/04/2022 21:34 WG1935558 1,3-Dichlorobenzene ND 0.0100 1 10/04/2022 21:34 WG1935558 1,4-Dichlorobenzene ND 0.0100 1 10/04/2022 21:34 WG1935558 3,3-Dichlorobenzidine ND 0.0100 1 10/04/2022 21:34 WG1935558 2,4-Dinitrotoluene ND 0.0100 1 10/04/2022 21:34 WG1935558 2,6-Dinitrotoluene ND 0.0100 1 10/04/2022 21:34 WG1935558 Fluoranthene ND 0.00100 1 10/04/2022 21:34 WG1935558 Fluorene ND 0.00100 1 10/04/2022 21:34 WG1935558 Hexachlorobenzene ND 0.00100 1 10/04/2022 21:34 WG1935558 Hexachloro-1,3-butadiene ND 0.0100 1 10/04/2022 21:34 WG1935558 Hexachlorocyclopentadiene ND 0.0100 1 10/04/2022 21:34 WG1935558 Hexachloroethane ND 0.0100 1 10/04/2022 21:34 WG1935558 Indeno(1,2,3-cd)pyrene ND 0.00100 1 10/04/2022 21:34 WG1935558 Isophorone ND 0.0100 1 10/04/2022 21:34 WG1935558 Naphthalene ND 0.00100 1 10/04/2022 21:34 WG1935558 Nitrobenzene ND 0.0100 1 10/04/2022 21:34 WG1935558 n-Nitrosodimethylamine ND 0.0100 1 10/04/2022 21:34 WG1935558 n-Nitrosodiphenylamine ND 0.0100 1 10/04/2022 21:34 WG1935558 n-Nitrosodi-n-propylamine ND 0.0100 1 10/04/2022 21:34 WG1935558 Phenanthrene ND 0.00100 1 10/04/2022 21:34 WG1935558 Benzylbutyl phthalate ND 0.00300 1 10/04/2022 21:34 WG1935558 Bis(2-ethylhexyl)phthalate ND 0.00300 1 10/04/2022 21:34 WG1935558 Di-n-butyl phthalate ND 0.00300 1 10/04/2022 21:34 WG1935558 Diethyl phthalate ND 0.00300 1 10/04/2022 21:34 WG1935558 Dimethyl phthalate ND 0.00300 1 10/04/2022 21:34 WG1935558 Di-n-octyl phthalate ND 0.00300 1 10/04/2022 21:34 WG1935558 Pyrene ND 0.00100 1 10/04/2022 21:34 WG1935558 1,2,4-Trichlorobenzene ND 0.0100 1 10/04/2022 21:34 WG1935558 4-Chloro-3-methylphenol ND 0.0100 1 10/04/2022 21:34 WG1935558 2-Chlorophenol ND 0.0100 1 10/04/2022 21:34 WG1935558 2,4-Dichlorophenol ND 0.0100 1 10/04/2022 21:34 WG1935558 2,4-Dimethylphenol ND 0.0100 1 10/04/2022 21:34 WG1935558 4,6-Dinitro-2-methylphenol ND 0.0100 1 10/04/2022 21:34 WG1935558 2,4-Dinitrophenol ND 0.0100 1 10/04/2022 21:34 WG1935558 2-Nitrophenol ND 0.0100 1 10/04/2022 21:34 WG1935558 4-Nitrophenol ND 0.0100 1 10/04/2022 21:34 WG1935558 Pentachlorophenol ND 0.0100 1 10/04/2022 21:34 WG1935558 Phenol 0.0103 0.0100 1 10/04/2022 21:34 WG1935558 2,4,6-Trichlorophenol ND 0.0100 1 10/04/2022 21:34 WG1935558 1 Cp 2 Tc 3 Ss 4 Cn 5 Sr 6 Qc 7 Gl 8 Al 9 Sc ACCOUNT:PROJECT:SDG:DATE/TIME:PAGE: Tetra Tech Inc. - UT L1540989 10/14/22 15:00 11 of 34 ACCOUNT:PROJECT:SDG:DATE/TIME:PAGE: Tetra Tech Inc. - UT L1540989 10/14/22 16:18 11 of 34 SAMPLE RESULTS - 02 L1540989 RES-2 Collected date/time: 09/26/22 15:25 Semi Volatile Organic Compounds (GC/MS) by Method 8270C Result Qualifier RDL Dilution Analysis Batch Analyte mg/l mg/l date / time (S) 2-Fluorophenol 24.2 10.0-120 10/04/2022 21:34 WG1935558 (S) Phenol-d5 19.1 10.0-120 10/04/2022 21:34 WG1935558 (S) Nitrobenzene-d5 64.8 10.0-127 10/04/2022 21:34 WG1935558 (S) 2-Fluorobiphenyl 45.1 10.0-130 10/04/2022 21:34 WG1935558 (S) 2,4,6-Tribromophenol 44.9 10.0-155 10/04/2022 21:34 WG1935558 (S) p-Terphenyl-d14 33.0 10.0-128 10/04/2022 21:34 WG1935558 1 Cp 2 Tc 3 Ss 4 Cn 5 Sr 6 Qc 7 Gl 8 Al 9 Sc ACCOUNT:PROJECT:SDG:DATE/TIME:PAGE: Tetra Tech Inc. - UT L1540989 10/14/22 15:00 12 of 34 ACCOUNT:PROJECT:SDG:DATE/TIME:PAGE: Tetra Tech Inc. - UT L1540989 10/14/22 16:18 12 of 34 QUALITY CONTROL SUMMARYWG1936171 Mercury by Method 7470A L1540989-01,02 Method Blank (MB) (MB) R3848599-1 10/14/22 11:58 MB Result MB Qualifier MB MDL MB RDL Analyte mg/l mg/l mg/l Mercury U 0.000100 0.000200 Laboratory Control Sample (LCS) (LCS) R3848599-2 10/14/22 12:01 Spike Amount LCS Result LCS Rec. Rec. Limits LCS Qualifier Analyte mg/l mg/l %% Mercury 0.00300 0.00302 101 80.0-120 L1540970-01 Original Sample (OS) • Matrix Spike (MS) • Matrix Spike Duplicate (MSD) (OS) L1540970-01 10/14/22 12:07 • (MS) R3848599-3 10/14/22 12:09 • (MSD) R3848599-4 10/14/22 12:12 Spike Amount Original Result MS Result MSD Result MS Rec. MSD Rec. Dilution Rec. Limits MS Qualifier MSD Qualifier RPD RPD Limits Analyte mg/l mg/l mg/l mg/l %%%%% Mercury 0.00300 ND 0.00224 0.00219 74.7 73.0 1 75.0-125 J6 J6 2.26 20 1 Cp 2 Tc 3 Ss 4 Cn 5 Sr 6 Qc 7 Gl 8 Al 9 Sc ACCOUNT:PROJECT:SDG:DATE/TIME:PAGE: Tetra Tech Inc. - UT L1540989 10/14/22 15:00 13 of 34 ACCOUNT:PROJECT:SDG:DATE/TIME:PAGE: Tetra Tech Inc. - UT L1540989 10/14/22 16:18 13 of 34 QUALITY CONTROL SUMMARYWG1940066 Metals (ICP) by Method 6010B L1540989-01,02 Method Blank (MB) (MB) R3847217-1 10/11/22 14:31 MB Result MB Qualifier MB MDL MB RDL Analyte mg/l mg/l mg/l Antimony U 0.00430 0.0100 Arsenic U 0.00440 0.0100 Beryllium U 0.000330 0.00200 Cadmium U 0.000479 0.00200 Chromium U 0.00140 0.0100 Copper U 0.00368 0.0100 Lead U 0.00299 0.00600 Nickel U 0.00161 0.0100 Selenium U 0.00735 0.0100 Silver U 0.00154 0.00500 Thallium U 0.00431 0.0100 Zinc U 0.00652 0.0500 Laboratory Control Sample (LCS) (LCS) R3847217-2 10/11/22 14:34 Spike Amount LCS Result LCS Rec. Rec. Limits LCS Qualifier Analyte mg/l mg/l %% Antimony 1.00 0.915 91.5 80.0-120 Arsenic 1.00 0.892 89.2 80.0-120 Beryllium 1.00 0.946 94.6 80.0-120 Cadmium 1.00 0.907 90.7 80.0-120 Chromium 1.00 0.902 90.2 80.0-120 Copper 1.00 0.918 91.8 80.0-120 Lead 1.00 0.888 88.8 80.0-120 Nickel 1.00 0.899 89.9 80.0-120 Selenium 1.00 0.924 92.4 80.0-120 Silver 0.200 0.178 89.1 80.0-120 Thallium 1.00 0.910 91.0 80.0-120 Zinc 1.00 0.916 91.6 80.0-120 L1540970-01 Original Sample (OS) • Matrix Spike (MS) • Matrix Spike Duplicate (MSD) (OS) L1540970-01 10/11/22 14:37 • (MS) R3847217-4 10/11/22 14:42 • (MSD) R3847217-5 10/11/22 14:44 Spike Amount Original Result MS Result MSD Result MS Rec. MSD Rec. Dilution Rec. Limits MS Qualifier MSD Qualifier RPD RPD Limits Analyte mg/l mg/l mg/l mg/l %%%%% Antimony 1.00 ND 0.941 0.939 94.1 93.9 1 75.0-125 0.255 20 Arsenic 1.00 ND 0.924 0.936 91.7 92.8 1 75.0-125 1.20 20 Beryllium 1.00 ND 0.937 0.948 93.7 94.8 1 75.0-125 1.21 20 1 Cp 2 Tc 3 Ss 4 Cn 5 Sr 6 Qc 7 Gl 8 Al 9 Sc ACCOUNT:PROJECT:SDG:DATE/TIME:PAGE: Tetra Tech Inc. - UT L1540989 10/14/22 15:00 14 of 34 ACCOUNT:PROJECT:SDG:DATE/TIME:PAGE: Tetra Tech Inc. - UT L1540989 10/14/22 16:18 14 of 34 QUALITY CONTROL SUMMARYWG1940066 Metals (ICP) by Method 6010B L1540989-01,02 L1540970-01 Original Sample (OS) • Matrix Spike (MS) • Matrix Spike Duplicate (MSD) (OS) L1540970-01 10/11/22 14:37 • (MS) R3847217-4 10/11/22 14:42 • (MSD) R3847217-5 10/11/22 14:44 Spike Amount Original Result MS Result MSD Result MS Rec. MSD Rec. Dilution Rec. Limits MS Qualifier MSD Qualifier RPD RPD Limits Analyte mg/l mg/l mg/l mg/l %%%%% Cadmium 1.00 ND 0.913 0.923 91.3 92.3 1 75.0-125 1.07 20 Chromium 1.00 ND 0.880 0.885 88.0 88.5 1 75.0-125 0.559 20 Copper 1.00 ND 0.915 0.921 90.9 91.5 1 75.0-125 0.635 20 Lead 1.00 ND 0.870 0.880 86.6 87.6 1 75.0-125 1.16 20 Nickel 1.00 0.0247 0.903 0.909 87.8 88.4 1 75.0-125 0.681 20 Selenium 1.00 ND 0.951 0.954 95.1 95.4 1 75.0-125 0.328 20 Silver 0.200 ND 0.182 0.183 91.1 91.4 1 75.0-125 0.350 20 Thallium 1.00 ND 0.881 0.888 88.1 88.8 1 75.0-125 0.878 20 Zinc 1.00 ND 0.894 0.901 88.6 89.3 1 75.0-125 0.730 20 1 Cp 2 Tc 3 Ss 4 Cn 5 Sr 6 Qc 7 Gl 8 Al 9 Sc ACCOUNT:PROJECT:SDG:DATE/TIME:PAGE: Tetra Tech Inc. - UT L1540989 10/14/22 15:00 15 of 34 ACCOUNT:PROJECT:SDG:DATE/TIME:PAGE: Tetra Tech Inc. - UT L1540989 10/14/22 16:18 15 of 34 QUALITY CONTROL SUMMARYWG1937632 Volatile Organic Compounds (GC) by Method 8015D/GRO L1540989-01,02 Method Blank (MB) (MB) R3846381-2 10/06/22 03:48 MB Result MB Qualifier MB MDL MB RDL Analyte mg/l mg/l mg/l TPH (GC/FID) Low Fraction U 0.0314 0.100 (S) a,a,a-Trifluorotoluene(FID)106 78.0-120 Laboratory Control Sample (LCS) (LCS) R3846381-1 10/06/22 02:54 Spike Amount LCS Result LCS Rec. Rec. Limits LCS Qualifier Analyte mg/l mg/l %% TPH (GC/FID) Low Fraction 5.50 5.50 100 72.0-127 (S) a,a,a-Trifluorotoluene(FID) 102 78.0-120 1 Cp 2 Tc 3 Ss 4 Cn 5 Sr 6 Qc 7 Gl 8 Al 9 Sc ACCOUNT:PROJECT:SDG:DATE/TIME:PAGE: Tetra Tech Inc. - UT L1540989 10/14/22 15:00 16 of 34 ACCOUNT:PROJECT:SDG:DATE/TIME:PAGE: Tetra Tech Inc. - UT L1540989 10/14/22 16:18 16 of 34 QUALITY CONTROL SUMMARYWG1936651 Volatile Organic Compounds (GC/MS) by Method 8260B L1540989-01,02 Method Blank (MB) (MB) R3845172-2 10/04/22 00:10 MB Result MB Qualifier MB MDL MB RDL Analyte mg/l mg/l mg/l Acetone U 0.0113 0.0500 Acrolein U 0.00254 0.0500 Acrylonitrile U 0.000671 0.0100 Benzene U 0.0000941 0.00100 Bromobenzene U 0.000118 0.00100 Bromodichloromethane U 0.000136 0.00100 Bromoform U 0.000129 0.00100 Bromomethane U 0.000605 0.00500 n-Butylbenzene U 0.000157 0.00100 sec-Butylbenzene U 0.000125 0.00100 tert-Butylbenzene U 0.000127 0.00100 Carbon tetrachloride U 0.000128 0.00100 Chlorobenzene U 0.000116 0.00100 Chlorodibromomethane U 0.000140 0.00100 Chloroethane U 0.000192 0.00500 Chloroform U 0.000111 0.00500 Chloromethane U 0.000960 0.00250 2-Chlorotoluene U 0.000106 0.00100 4-Chlorotoluene U 0.000114 0.00100 1,2-Dibromo-3-Chloropropane U 0.000276 0.00500 1,2-Dibromoethane U 0.000126 0.00100 Dibromomethane U 0.000122 0.00100 1,2-Dichlorobenzene U 0.000107 0.00100 1,3-Dichlorobenzene U 0.000110 0.00100 1,4-Dichlorobenzene U 0.000120 0.00100 Dichlorodifluoromethane U 0.000374 0.00500 1,1-Dichloroethane U 0.000100 0.00100 1,2-Dichloroethane U 0.0000819 0.00100 1,1-Dichloroethene U 0.000188 0.00100 cis-1,2-Dichloroethene U 0.000126 0.00100 trans-1,2-Dichloroethene U 0.000149 0.00100 1,2-Dichloropropane U 0.000149 0.00100 1,1-Dichloropropene U 0.000142 0.00100 1,3-Dichloropropane U 0.000110 0.00100 cis-1,3-Dichloropropene U 0.000111 0.00100 trans-1,3-Dichloropropene U 0.000118 0.00100 2,2-Dichloropropane U 0.000161 0.00100 Di-isopropyl ether U 0.000105 0.00100 Ethylbenzene U 0.000137 0.00100 Hexachloro-1,3-butadiene U 0.000337 0.00100 1 Cp 2 Tc 3 Ss 4 Cn 5 Sr 6 Qc 7 Gl 8 Al 9 Sc ACCOUNT:PROJECT:SDG:DATE/TIME:PAGE: Tetra Tech Inc. - UT L1540989 10/14/22 15:00 17 of 34 ACCOUNT:PROJECT:SDG:DATE/TIME:PAGE: Tetra Tech Inc. - UT L1540989 10/14/22 16:18 17 of 34 QUALITY CONTROL SUMMARYWG1936651 Volatile Organic Compounds (GC/MS) by Method 8260B L1540989-01,02 Method Blank (MB) (MB) R3845172-2 10/04/22 00:10 MB Result MB Qualifier MB MDL MB RDL Analyte mg/l mg/l mg/l Isopropylbenzene U 0.000105 0.00100 p-Isopropyltoluene U 0.000120 0.00100 2-Butanone (MEK)U 0.00119 0.0100 Methylene Chloride U 0.000430 0.00500 4-Methyl-2-pentanone (MIBK) U 0.000478 0.0100 Methyl tert-butyl ether U 0.000101 0.00100 Naphthalene U 0.00100 0.00500 n-Propylbenzene U 0.0000993 0.00100 Styrene U 0.000118 0.00100 1,1,1,2-Tetrachloroethane U 0.000147 0.00100 1,1,2,2-Tetrachloroethane U 0.000133 0.00100 1,1,2-Trichlorotrifluoroethane U 0.000180 0.00100 Tetrachloroethene U 0.000300 0.00100 Toluene U 0.000278 0.00100 1,2,3-Trichlorobenzene U 0.000230 0.00100 1,2,4-Trichlorobenzene U 0.000481 0.00100 1,1,1-Trichloroethane U 0.000149 0.00100 1,1,2-Trichloroethane U 0.000158 0.00100 Trichloroethene U 0.000190 0.00100 Trichlorofluoromethane U 0.000160 0.00500 1,2,3-Trichloropropane U 0.000237 0.00250 1,2,4-Trimethylbenzene U 0.000322 0.00100 1,2,3-Trimethylbenzene U 0.000104 0.00100 1,3,5-Trimethylbenzene U 0.000104 0.00100 Vinyl chloride U 0.000234 0.00100 Xylenes, Total U 0.000174 0.00300 (S) Toluene-d8 120 80.0-120 (S) 4-Bromofluorobenzene 96.3 77.0-126 (S) 1,2-Dichloroethane-d4 90.4 70.0-130 Laboratory Control Sample (LCS) (LCS) R3845172-1 10/03/22 23:07 Spike Amount LCS Result LCS Rec. Rec. Limits LCS Qualifier Analyte mg/l mg/l %% Acetone 0.0250 0.0203 81.2 19.0-160 Acrolein 0.0250 0.0226 90.4 10.0-160 Acrylonitrile 0.0250 0.0194 77.6 55.0-149 Benzene 0.00500 0.00512 102 70.0-123 1 Cp 2 Tc 3 Ss 4 Cn 5 Sr 6 Qc 7 Gl 8 Al 9 Sc ACCOUNT:PROJECT:SDG:DATE/TIME:PAGE: Tetra Tech Inc. - UT L1540989 10/14/22 15:00 18 of 34 ACCOUNT:PROJECT:SDG:DATE/TIME:PAGE: Tetra Tech Inc. - UT L1540989 10/14/22 16:18 18 of 34 QUALITY CONTROL SUMMARYWG1936651 Volatile Organic Compounds (GC/MS) by Method 8260B L1540989-01,02 Laboratory Control Sample (LCS) (LCS) R3845172-1 10/03/22 23:07 Spike Amount LCS Result LCS Rec. Rec. Limits LCS Qualifier Analyte mg/l mg/l %% Bromobenzene 0.00500 0.00506 101 73.0-121 Bromodichloromethane 0.00500 0.00407 81.4 75.0-120 Bromoform 0.00500 0.00353 70.6 68.0-132 Bromomethane 0.00500 0.00333 66.6 10.0-160 n-Butylbenzene 0.00500 0.00619 124 73.0-125 sec-Butylbenzene 0.00500 0.00566 113 75.0-125 tert-Butylbenzene 0.00500 0.00580 116 76.0-124 Carbon tetrachloride 0.00500 0.00440 88.0 68.0-126 Chlorobenzene 0.00500 0.00514 103 80.0-121 Chlorodibromomethane 0.00500 0.00437 87.4 77.0-125 Chloroethane 0.00500 0.00367 73.4 47.0-150 Chloroform 0.00500 0.00474 94.8 73.0-120 Chloromethane 0.00500 0.00243 48.6 41.0-142 2-Chlorotoluene 0.00500 0.00519 104 76.0-123 4-Chlorotoluene 0.00500 0.00540 108 75.0-122 1,2-Dibromo-3-Chloropropane 0.00500 0.00338 67.6 58.0-134 1,2-Dibromoethane 0.00500 0.00479 95.8 80.0-122 Dibromomethane 0.00500 0.00477 95.4 80.0-120 1,2-Dichlorobenzene 0.00500 0.00553 111 79.0-121 1,3-Dichlorobenzene 0.00500 0.00532 106 79.0-120 1,4-Dichlorobenzene 0.00500 0.00472 94.4 79.0-120 Dichlorodifluoromethane 0.00500 0.00390 78.0 51.0-149 1,1-Dichloroethane 0.00500 0.00410 82.0 70.0-126 1,2-Dichloroethane 0.00500 0.00415 83.0 70.0-128 1,1-Dichloroethene 0.00500 0.00487 97.4 71.0-124 cis-1,2-Dichloroethene 0.00500 0.00451 90.2 73.0-120 trans-1,2-Dichloroethene 0.00500 0.00474 94.8 73.0-120 1,2-Dichloropropane 0.00500 0.00443 88.6 77.0-125 1,1-Dichloropropene 0.00500 0.00481 96.2 74.0-126 1,3-Dichloropropane 0.00500 0.00530 106 80.0-120 cis-1,3-Dichloropropene 0.00500 0.00424 84.8 80.0-123 trans-1,3-Dichloropropene 0.00500 0.00414 82.8 78.0-124 2,2-Dichloropropane 0.00500 0.00403 80.6 58.0-130 Di-isopropyl ether 0.00500 0.00365 73.0 58.0-138 Ethylbenzene 0.00500 0.00524 105 79.0-123 Hexachloro-1,3-butadiene 0.00500 0.00551 110 54.0-138 Isopropylbenzene 0.00500 0.00553 111 76.0-127 p-Isopropyltoluene 0.00500 0.00569 114 76.0-125 2-Butanone (MEK)0.0250 0.0205 82.0 44.0-160 Methylene Chloride 0.00500 0.00466 93.2 67.0-120 1 Cp 2 Tc 3 Ss 4 Cn 5 Sr 6 Qc 7 Gl 8 Al 9 Sc ACCOUNT:PROJECT:SDG:DATE/TIME:PAGE: Tetra Tech Inc. - UT L1540989 10/14/22 15:00 19 of 34 ACCOUNT:PROJECT:SDG:DATE/TIME:PAGE: Tetra Tech Inc. - UT L1540989 10/14/22 16:18 19 of 34 QUALITY CONTROL SUMMARYWG1936651 Volatile Organic Compounds (GC/MS) by Method 8260B L1540989-01,02 Laboratory Control Sample (LCS) (LCS) R3845172-1 10/03/22 23:07 Spike Amount LCS Result LCS Rec. Rec. Limits LCS Qualifier Analyte mg/l mg/l %% 4-Methyl-2-pentanone (MIBK) 0.0250 0.0207 82.8 68.0-142 Methyl tert-butyl ether 0.00500 0.00467 93.4 68.0-125 Naphthalene 0.00500 0.00469 93.8 54.0-135 n-Propylbenzene 0.00500 0.00605 121 77.0-124 Styrene 0.00500 0.00459 91.8 73.0-130 1,1,1,2-Tetrachloroethane 0.00500 0.00417 83.4 75.0-125 1,1,2,2-Tetrachloroethane 0.00500 0.00506 101 65.0-130 1,1,2-Trichlorotrifluoroethane 0.00500 0.00486 97.2 69.0-132 Tetrachloroethene 0.00500 0.00542 108 72.0-132 Toluene 0.00500 0.00543 109 79.0-120 1,2,3-Trichlorobenzene 0.00500 0.00603 121 50.0-138 1,2,4-Trichlorobenzene 0.00500 0.00528 106 57.0-137 1,1,1-Trichloroethane 0.00500 0.00431 86.2 73.0-124 1,1,2-Trichloroethane 0.00500 0.00528 106 80.0-120 Trichloroethene 0.00500 0.00460 92.0 78.0-124 Trichlorofluoromethane 0.00500 0.00532 106 59.0-147 1,2,3-Trichloropropane 0.00500 0.00516 103 73.0-130 1,2,4-Trimethylbenzene 0.00500 0.00560 112 76.0-121 1,2,3-Trimethylbenzene 0.00500 0.00571 114 77.0-120 1,3,5-Trimethylbenzene 0.00500 0.00592 118 76.0-122 Vinyl chloride 0.00500 0.00418 83.6 67.0-131 Xylenes, Total 0.0150 0.0154 103 79.0-123 (S) Toluene-d8 115 80.0-120 (S) 4-Bromofluorobenzene 97.4 77.0-126 (S) 1,2-Dichloroethane-d4 92.6 70.0-130 L1540990-23 Original Sample (OS) • Matrix Spike (MS) • Matrix Spike Duplicate (MSD) (OS) L1540990-23 10/04/22 08:13 • (MS) R3845172-3 10/04/22 09:17 • (MSD) R3845172-4 10/04/22 09:38 Spike Amount Original Result MS Result MSD Result MS Rec. MSD Rec. Dilution Rec. Limits MS Qualifier MSD Qualifier RPD RPD Limits Analyte mg/l mg/l mg/l mg/l %%%%% Acetone 0.0250 ND ND ND 90.0 91.2 1 10.0-160 1.32 35 Acrolein 0.0250 ND ND ND 108 108 1 10.0-160 0.370 39 Acrylonitrile 0.0250 ND 0.0237 0.0242 94.8 96.8 1 21.0-160 2.09 32 Benzene 0.00500 ND 0.00658 0.00652 132 130 1 17.0-158 0.916 27 Bromobenzene 0.00500 ND 0.00615 0.00626 123 125 1 30.0-149 1.77 28 Bromodichloromethane 0.00500 ND 0.00519 0.00560 104 112 1 31.0-150 7.60 27 Bromoform 0.00500 ND 0.00453 0.00489 90.6 97.8 1 29.0-150 7.64 29 Bromomethane 0.00500 ND ND ND 50.2 50.6 1 10.0-160 0.794 38 1 Cp 2 Tc 3 Ss 4 Cn 5 Sr 6 Qc 7 Gl 8 Al 9 Sc ACCOUNT:PROJECT:SDG:DATE/TIME:PAGE: Tetra Tech Inc. - UT L1540989 10/14/22 15:00 20 of 34 ACCOUNT:PROJECT:SDG:DATE/TIME:PAGE: Tetra Tech Inc. - UT L1540989 10/14/22 16:18 20 of 34 QUALITY CONTROL SUMMARYWG1936651 Volatile Organic Compounds (GC/MS) by Method 8260B L1540989-01,02 L1540990-23 Original Sample (OS) • Matrix Spike (MS) • Matrix Spike Duplicate (MSD) (OS) L1540990-23 10/04/22 08:13 • (MS) R3845172-3 10/04/22 09:17 • (MSD) R3845172-4 10/04/22 09:38 Spike Amount Original Result MS Result MSD Result MS Rec. MSD Rec. Dilution Rec. Limits MS Qualifier MSD Qualifier RPD RPD Limits Analyte mg/l mg/l mg/l mg/l %%%%% n-Butylbenzene 0.00500 ND 0.00686 0.00748 137 150 1 31.0-150 8.65 30 sec-Butylbenzene 0.00500 ND 0.00690 0.00686 138 137 1 33.0-155 0.581 29 tert-Butylbenzene 0.00500 ND 0.00700 0.00723 140 145 1 34.0-153 3.23 28 Carbon tetrachloride 0.00500 ND 0.00516 0.00561 103 112 1 23.0-159 8.36 28 Chlorobenzene 0.00500 ND 0.00621 0.00635 124 127 1 33.0-152 2.23 27 Chlorodibromomethane 0.00500 ND 0.00534 0.00550 107 110 1 37.0-149 2.95 27 Chloroethane 0.00500 ND ND ND 89.6 97.4 1 10.0-160 8.34 30 Chloroform 0.00500 ND 0.00593 0.00602 119 120 1 29.0-154 1.51 28 Chloromethane 0.00500 ND 0.00296 0.00294 59.2 58.8 1 10.0-160 0.678 29 2-Chlorotoluene 0.00500 ND 0.00637 0.00669 127 134 1 32.0-153 4.90 28 4-Chlorotoluene 0.00500 ND 0.00652 0.00657 130 131 1 32.0-150 0.764 28 1,2-Dibromo-3-Chloropropane 0.00500 ND ND ND 84.8 80.8 1 22.0-151 4.83 34 1,2-Dibromoethane 0.00500 ND 0.00576 0.00587 115 117 1 34.0-147 1.89 27 Dibromomethane 0.00500 ND 0.00587 0.00606 117 121 1 30.0-151 3.19 27 1,2-Dichlorobenzene 0.00500 ND 0.00631 0.00668 126 134 1 34.0-149 5.70 28 1,3-Dichlorobenzene 0.00500 ND 0.00606 0.00641 121 128 1 36.0-146 5.61 27 1,4-Dichlorobenzene 0.00500 ND 0.00569 0.00596 114 119 1 35.0-142 4.64 27 Dichlorodifluoromethane 0.00500 ND 0.00510 0.00515 102 103 1 10.0-160 0.976 29 1,1-Dichloroethane 0.00500 ND 0.00527 0.00527 105 105 1 25.0-158 0.000 27 1,2-Dichloroethane 0.00500 ND 0.00498 0.00526 99.6 105 1 29.0-151 5.47 27 1,1-Dichloroethene 0.00500 ND 0.00647 0.00682 129 136 1 11.0-160 5.27 29 cis-1,2-Dichloroethene 0.00500 ND 0.00598 0.00625 120 125 1 10.0-160 4.42 27 trans-1,2-Dichloroethene 0.00500 ND 0.00587 0.00588 117 118 1 17.0-153 0.170 27 1,2-Dichloropropane 0.00500 ND 0.00534 0.00548 107 110 1 30.0-156 2.59 27 1,1-Dichloropropene 0.00500 ND 0.00624 0.00635 125 127 1 25.0-158 1.75 27 1,3-Dichloropropane 0.00500 ND 0.00646 0.00675 129 135 1 38.0-147 4.39 27 cis-1,3-Dichloropropene 0.00500 ND 0.00510 0.00540 102 108 1 34.0-149 5.71 28 trans-1,3-Dichloropropene 0.00500 ND 0.00495 0.00510 99.0 102 1 32.0-149 2.99 28 2,2-Dichloropropane 0.00500 ND 0.00557 0.00587 111 117 1 24.0-152 5.24 29 Di-isopropyl ether 0.00500 ND 0.00452 0.00469 90.4 93.8 1 21.0-160 3.69 28 Ethylbenzene 0.00500 ND 0.00702 0.00672 140 134 1 30.0-155 4.37 27 Hexachloro-1,3-butadiene 0.00500 ND 0.00698 0.00801 140 160 1 20.0-154 J5 13.7 34 Isopropylbenzene 0.00500 ND 0.00690 0.00692 138 138 1 28.0-157 0.289 27 p-Isopropyltoluene 0.00500 ND 0.00677 0.00713 135 143 1 30.0-154 5.18 29 2-Butanone (MEK)0.0250 ND 0.0241 0.0242 96.4 96.8 1 10.0-160 0.414 32 Methylene Chloride 0.00500 ND 0.00538 0.00551 108 110 1 23.0-144 2.39 28 4-Methyl-2-pentanone (MIBK) 0.0250 ND 0.0244 0.0257 97.6 103 1 29.0-160 5.19 29 Methyl tert-butyl ether 0.00500 ND 0.00584 0.00591 117 118 1 28.0-150 1.19 29 Naphthalene 0.00500 0.00764 0.217 0.0425 4190 697 1 12.0-156 E J5 J3 J5 134 35 n-Propylbenzene 0.00500 ND 0.00710 0.00740 142 148 1 31.0-154 4.14 28 1 Cp 2 Tc 3 Ss 4 Cn 5 Sr 6 Qc 7 Gl 8 Al 9 Sc ACCOUNT:PROJECT:SDG:DATE/TIME:PAGE: Tetra Tech Inc. - UT L1540989 10/14/22 15:00 21 of 34 ACCOUNT:PROJECT:SDG:DATE/TIME:PAGE: Tetra Tech Inc. - UT L1540989 10/14/22 16:18 21 of 34 QUALITY CONTROL SUMMARYWG1936651 Volatile Organic Compounds (GC/MS) by Method 8260B L1540989-01,02 L1540990-23 Original Sample (OS) • Matrix Spike (MS) • Matrix Spike Duplicate (MSD) (OS) L1540990-23 10/04/22 08:13 • (MS) R3845172-3 10/04/22 09:17 • (MSD) R3845172-4 10/04/22 09:38 Spike Amount Original Result MS Result MSD Result MS Rec. MSD Rec. Dilution Rec. Limits MS Qualifier MSD Qualifier RPD RPD Limits Analyte mg/l mg/l mg/l mg/l %%%%% Styrene 0.00500 ND 0.00592 0.00607 118 121 1 33.0-155 2.50 28 1,1,1,2-Tetrachloroethane 0.00500 ND 0.00568 0.00571 114 114 1 36.0-151 0.527 29 1,1,2,2-Tetrachloroethane 0.00500 ND 0.00612 0.00649 122 130 1 33.0-150 5.87 28 1,1,2-Trichlorotrifluoroethane 0.00500 ND 0.00687 0.00667 137 133 1 23.0-160 2.95 30 Tetrachloroethene 0.00500 ND 0.00636 0.00695 127 139 1 10.0-160 8.87 27 Toluene 0.00500 ND 0.00693 0.00710 139 142 1 26.0-154 2.42 28 1,2,3-Trichlorobenzene 0.00500 ND 0.00643 0.00684 129 137 1 17.0-150 6.18 36 1,2,4-Trichlorobenzene 0.00500 ND 0.00631 0.00688 126 138 1 24.0-150 8.64 33 1,1,1-Trichloroethane 0.00500 ND 0.00590 0.00612 118 122 1 23.0-160 3.66 28 1,1,2-Trichloroethane 0.00500 ND 0.00662 0.00694 132 139 1 35.0-147 4.72 27 Trichloroethene 0.00500 ND 0.00541 0.00570 108 114 1 10.0-160 5.22 25 Trichlorofluoromethane 0.00500 ND 0.00678 0.00686 136 137 1 17.0-160 1.17 31 1,2,3-Trichloropropane 0.00500 ND 0.00616 0.00598 123 120 1 34.0-151 2.97 29 1,2,4-Trimethylbenzene 0.00500 ND 0.00741 0.00700 148 140 1 26.0-154 5.69 27 1,2,3-Trimethylbenzene 0.00500 ND 0.00709 0.00693 142 139 1 32.0-149 2.28 28 1,3,5-Trimethylbenzene 0.00500 ND 0.00698 0.00698 140 140 1 28.0-153 0.000 27 Vinyl chloride 0.00500 ND 0.00551 0.00551 110 110 1 10.0-160 0.000 27 Xylenes, Total 0.0150 ND 0.0207 0.0200 138 133 1 29.0-154 3.44 28 (S) Toluene-d8 118 118 80.0-120 (S) 4-Bromofluorobenzene 98.3 101 77.0-126 (S) 1,2-Dichloroethane-d4 93.6 93.4 70.0-130 1 Cp 2 Tc 3 Ss 4 Cn 5 Sr 6 Qc 7 Gl 8 Al 9 Sc ACCOUNT:PROJECT:SDG:DATE/TIME:PAGE: Tetra Tech Inc. - UT L1540989 10/14/22 15:00 22 of 34 ACCOUNT:PROJECT:SDG:DATE/TIME:PAGE: Tetra Tech Inc. - UT L1540989 10/14/22 16:18 22 of 34 QUALITY CONTROL SUMMARYWG1938029 Semi-Volatile Organic Compounds (GC) by Method 8015 L1540989-02 Method Blank (MB) (MB) R3846605-1 10/10/22 07:38 MB Result MB Qualifier MB MDL MB RDL Analyte mg/l mg/l mg/l C10-C28 Diesel Range 0.0937 J 0.0222 0.100 C28-C40 Oil Range 0.742 0.0118 0.100 (S) o-Terphenyl 92.5 31.0-160 Laboratory Control Sample (LCS) (LCS) R3846605-2 10/10/22 08:23 Spike Amount LCS Result LCS Rec. Rec. Limits LCS Qualifier Analyte mg/l mg/l %% C10-C28 Diesel Range 1.50 1.21 80.7 50.0-150 (S) o-Terphenyl 90.0 31.0-160 1 Cp 2 Tc 3 Ss 4 Cn 5 Sr 6 Qc 7 Gl 8 Al 9 Sc ACCOUNT:PROJECT:SDG:DATE/TIME:PAGE: Tetra Tech Inc. - UT L1540989 10/14/22 15:00 23 of 34 ACCOUNT:PROJECT:SDG:DATE/TIME:PAGE: Tetra Tech Inc. - UT L1540989 10/14/22 16:18 23 of 34 QUALITY CONTROL SUMMARYWG1940068 Semi-Volatile Organic Compounds (GC) by Method 8015 L1540989-01 Method Blank (MB) (MB) R3847476-1 10/11/22 17:43 MB Result MB Qualifier MB MDL MB RDL Analyte mg/l mg/l mg/l C10-C28 Diesel Range U 0.0222 0.100 C28-C40 Oil Range U 0.0118 0.100 (S) o-Terphenyl 55.5 31.0-160 Laboratory Control Sample (LCS) (LCS) R3847476-2 10/11/22 18:09 Spike Amount LCS Result LCS Rec. Rec. Limits LCS Qualifier Analyte mg/l mg/l %% C10-C28 Diesel Range 1.50 1.32 88.0 50.0-150 (S) o-Terphenyl 81.0 31.0-160 L1540989-01 Original Sample (OS) • Matrix Spike (MS) • Matrix Spike Duplicate (MSD) (OS) L1540989-01 10/13/22 02:01 • (MS) R3847835-1 10/13/22 02:27 • (MSD) R3847835-2 10/13/22 02:53 Spike Amount Original Result MS Result MSD Result MS Rec. MSD Rec. Dilution Rec. Limits MS Qualifier MSD Qualifier RPD RPD Limits Analyte mg/l mg/l mg/l mg/l %%%%% C10-C28 Diesel Range 1.50 3.41 4.79 7.49 92.0 272 20 50.0-150 J3 J5 44.0 20 (S) o-Terphenyl 0.000 0.000 31.0-160 J7 J7 1 Cp 2 Tc 3 Ss 4 Cn 5 Sr 6 Qc 7 Gl 8 Al 9 Sc ACCOUNT:PROJECT:SDG:DATE/TIME:PAGE: Tetra Tech Inc. - UT L1540989 10/14/22 15:00 24 of 34 ACCOUNT:PROJECT:SDG:DATE/TIME:PAGE: Tetra Tech Inc. - UT L1540989 10/14/22 16:18 24 of 34 QUALITY CONTROL SUMMARYWG1935558 Semi Volatile Organic Compounds (GC/MS) by Method 8270C L1540989-01,02 Method Blank (MB) (MB) R3844977-2 10/04/22 14:04 MB Result MB Qualifier MB MDL MB RDL Analyte mg/l mg/l mg/l Acenaphthene U 0.0000886 0.00100 Acenaphthylene U 0.0000921 0.00100 Anthracene U 0.0000804 0.00100 Benzidine U 0.00374 0.0100 Benzo(a)anthracene U 0.000199 0.00100 Benzo(b)fluoranthene U 0.000130 0.00100 Benzo(k)fluoranthene U 0.000120 0.00100 Benzo(g,h,i)perylene U 0.000121 0.00100 Benzo(a)pyrene U 0.0000381 0.00100 Bis(2-chlorethoxy)methane U 0.000116 0.0100 Bis(2-chloroethyl)ether U 0.000137 0.0100 2,2-Oxybis(1-Chloropropane) U 0.000210 0.0100 4-Bromophenyl-phenylether U 0.0000877 0.0100 2-Chloronaphthalene U 0.0000648 0.00100 4-Chlorophenyl-phenylether U 0.0000926 0.0100 Chrysene U 0.000130 0.00100 Dibenz(a,h)anthracene U 0.0000644 0.00100 1,2-Dichlorobenzene U 0.0000713 0.0100 1,3-Dichlorobenzene U 0.000132 0.0100 1,4-Dichlorobenzene U 0.0000942 0.0100 3,3-Dichlorobenzidine U 0.000212 0.0100 2,4-Dinitrotoluene U 0.0000983 0.0100 2,6-Dinitrotoluene U 0.000250 0.0100 Fluoranthene U 0.000102 0.00100 Fluorene U 0.0000844 0.00100 Hexachlorobenzene U 0.0000755 0.00100 Hexachloro-1,3-butadiene U 0.0000968 0.0100 Hexachlorocyclopentadiene U 0.0000598 0.0100 Hexachloroethane U 0.000127 0.0100 Indeno(1,2,3-cd)pyrene U 0.000279 0.00100 Isophorone U 0.000143 0.0100 Naphthalene U 0.000159 0.00100 Nitrobenzene U 0.000297 0.0100 n-Nitrosodimethylamine U 0.000998 0.0100 n-Nitrosodiphenylamine U 0.00237 0.0100 n-Nitrosodi-n-propylamine U 0.000261 0.0100 Phenanthrene U 0.000112 0.00100 Benzylbutyl phthalate U 0.000765 0.00300 Bis(2-ethylhexyl)phthalate U 0.000895 0.00300 Di-n-butyl phthalate U 0.000453 0.00300 1 Cp 2 Tc 3 Ss 4 Cn 5 Sr 6 Qc 7 Gl 8 Al 9 Sc ACCOUNT:PROJECT:SDG:DATE/TIME:PAGE: Tetra Tech Inc. - UT L1540989 10/14/22 15:00 25 of 34 ACCOUNT:PROJECT:SDG:DATE/TIME:PAGE: Tetra Tech Inc. - UT L1540989 10/14/22 16:18 25 of 34 QUALITY CONTROL SUMMARYWG1935558 Semi Volatile Organic Compounds (GC/MS) by Method 8270C L1540989-01,02 Method Blank (MB) (MB) R3844977-2 10/04/22 14:04 MB Result MB Qualifier MB MDL MB RDL Analyte mg/l mg/l mg/l Diethyl phthalate U 0.000287 0.00300 Dimethyl phthalate U 0.000260 0.00300 Di-n-octyl phthalate U 0.000932 0.00300 Pyrene U 0.000107 0.00100 1,2,4-Trichlorobenzene U 0.0000698 0.0100 4-Chloro-3-methylphenol U 0.000131 0.0100 2-Chlorophenol U 0.000133 0.0100 2,4-Dichlorophenol U 0.000102 0.0100 2,4-Dimethylphenol U 0.0000636 0.0100 4,6-Dinitro-2-methylphenol U 0.00112 0.0100 2,4-Dinitrophenol U 0.00593 0.0100 2-Nitrophenol U 0.000117 0.0100 4-Nitrophenol U 0.000143 0.0100 Pentachlorophenol U 0.000313 0.0100 Phenol U 0.00433 0.0100 2,4,6-Trichlorophenol U 0.000100 0.0100 (S) 2-Fluorophenol 28.0 10.0-120 (S) Phenol-d5 18.4 10.0-120 (S) Nitrobenzene-d5 82.1 10.0-127 (S) 2-Fluorobiphenyl 72.7 10.0-130 (S) 2,4,6-Tribromophenol 59.0 10.0-155 (S) p-Terphenyl-d14 64.8 10.0-128 Method Blank (MB) (MB) R3846469-1 10/07/22 22:50 MB Result MB Qualifier MB MDL MB RDL Analyte mg/l mg/l mg/l Acenaphthene U 0.0000886 0.00100 Acenaphthylene U 0.0000921 0.00100 Anthracene U 0.0000804 0.00100 Benzidine U 0.00374 0.0100 Benzo(a)anthracene U 0.000199 0.00100 Benzo(b)fluoranthene U 0.000130 0.00100 Benzo(k)fluoranthene U 0.000120 0.00100 Benzo(g,h,i)perylene U 0.000121 0.00100 Benzo(a)pyrene U 0.0000381 0.00100 Bis(2-chlorethoxy)methane U 0.000116 0.0100 Bis(2-chloroethyl)ether U 0.000137 0.0100 1 Cp 2 Tc 3 Ss 4 Cn 5 Sr 6 Qc 7 Gl 8 Al 9 Sc ACCOUNT:PROJECT:SDG:DATE/TIME:PAGE: Tetra Tech Inc. - UT L1540989 10/14/22 15:00 26 of 34 ACCOUNT:PROJECT:SDG:DATE/TIME:PAGE: Tetra Tech Inc. - UT L1540989 10/14/22 16:18 26 of 34 QUALITY CONTROL SUMMARYWG1935558 Semi Volatile Organic Compounds (GC/MS) by Method 8270C L1540989-01,02 Method Blank (MB) (MB) R3846469-1 10/07/22 22:50 MB Result MB Qualifier MB MDL MB RDL Analyte mg/l mg/l mg/l 2,2-Oxybis(1-Chloropropane) U 0.000210 0.0100 4-Bromophenyl-phenylether U 0.0000877 0.0100 2-Chloronaphthalene U 0.0000648 0.00100 4-Chlorophenyl-phenylether U 0.0000926 0.0100 Chrysene U 0.000130 0.00100 Dibenz(a,h)anthracene U 0.0000644 0.00100 1,2-Dichlorobenzene U 0.0000713 0.0100 1,3-Dichlorobenzene U 0.000132 0.0100 1,4-Dichlorobenzene U 0.0000942 0.0100 3,3-Dichlorobenzidine U 0.000212 0.0100 2,4-Dinitrotoluene U 0.0000983 0.0100 2,6-Dinitrotoluene U 0.000250 0.0100 Fluoranthene U 0.000102 0.00100 Fluorene U 0.0000844 0.00100 Hexachlorobenzene U 0.0000755 0.00100 Hexachloro-1,3-butadiene U 0.0000968 0.0100 Hexachlorocyclopentadiene U 0.0000598 0.0100 Hexachloroethane U 0.000127 0.0100 Indeno(1,2,3-cd)pyrene U 0.000279 0.00100 Isophorone U 0.000143 0.0100 Naphthalene U 0.000159 0.00100 Nitrobenzene U 0.000297 0.0100 n-Nitrosodimethylamine U 0.000998 0.0100 n-Nitrosodiphenylamine U 0.00237 0.0100 n-Nitrosodi-n-propylamine U 0.000261 0.0100 Phenanthrene U 0.000112 0.00100 Benzylbutyl phthalate U 0.000765 0.00300 Bis(2-ethylhexyl)phthalate U 0.000895 0.00300 Di-n-butyl phthalate U 0.000453 0.00300 Diethyl phthalate U 0.000287 0.00300 Dimethyl phthalate U 0.000260 0.00300 Di-n-octyl phthalate U 0.000932 0.00300 Pyrene U 0.000107 0.00100 1,2,4-Trichlorobenzene U 0.0000698 0.0100 4-Chloro-3-methylphenol U 0.000131 0.0100 2-Chlorophenol U 0.000133 0.0100 2,4-Dichlorophenol U 0.000102 0.0100 2,4-Dimethylphenol U 0.0000636 0.0100 4,6-Dinitro-2-methylphenol U 0.00112 0.0100 2,4-Dinitrophenol U 0.00593 0.0100 1 Cp 2 Tc 3 Ss 4 Cn 5 Sr 6 Qc 7 Gl 8 Al 9 Sc ACCOUNT:PROJECT:SDG:DATE/TIME:PAGE: Tetra Tech Inc. - UT L1540989 10/14/22 15:00 27 of 34 ACCOUNT:PROJECT:SDG:DATE/TIME:PAGE: Tetra Tech Inc. - UT L1540989 10/14/22 16:18 27 of 34 QUALITY CONTROL SUMMARYWG1935558 Semi Volatile Organic Compounds (GC/MS) by Method 8270C L1540989-01,02 Method Blank (MB) (MB) R3846469-1 10/07/22 22:50 MB Result MB Qualifier MB MDL MB RDL Analyte mg/l mg/l mg/l 2-Nitrophenol U 0.000117 0.0100 4-Nitrophenol U 0.000143 0.0100 Pentachlorophenol U 0.000313 0.0100 Phenol U 0.00433 0.0100 2,4,6-Trichlorophenol U 0.000100 0.0100 (S) 2-Fluorophenol 26.8 10.0-120 (S) Phenol-d5 20.1 10.0-120 (S) Nitrobenzene-d5 72.0 10.0-127 (S) 2-Fluorobiphenyl 75.1 10.0-130 (S) 2,4,6-Tribromophenol 72.0 10.0-155 (S) p-Terphenyl-d14 72.2 10.0-128 Laboratory Control Sample (LCS) (LCS) R3844977-1 10/04/22 13:42 Spike Amount LCS Result LCS Rec. Rec. Limits LCS Qualifier Analyte mg/l mg/l %% Acenaphthene 0.0500 0.0402 80.4 41.0-120 Acenaphthylene 0.0500 0.0405 81.0 43.0-120 Anthracene 0.0500 0.0398 79.6 45.0-120 Benzidine 0.100 0.0160 16.0 10.0-120 Benzo(a)anthracene 0.0500 0.0391 78.2 47.0-120 Benzo(b)fluoranthene 0.0500 0.0402 80.4 46.0-120 Benzo(k)fluoranthene 0.0500 0.0391 78.2 46.0-120 Benzo(g,h,i)perylene 0.0500 0.0386 77.2 48.0-121 Benzo(a)pyrene 0.0500 0.0432 86.4 47.0-120 Bis(2-chlorethoxy)methane 0.0500 0.0377 75.4 33.0-120 Bis(2-chloroethyl)ether 0.0500 0.0393 78.6 23.0-120 2,2-Oxybis(1-Chloropropane) 0.0500 0.0342 68.4 28.0-120 4-Bromophenyl-phenylether 0.0500 0.0392 78.4 45.0-120 2-Chloronaphthalene 0.0500 0.0382 76.4 37.0-120 4-Chlorophenyl-phenylether 0.0500 0.0452 90.4 44.0-120 Chrysene 0.0500 0.0411 82.2 48.0-120 Dibenz(a,h)anthracene 0.0500 0.0406 81.2 47.0-120 1,2-Dichlorobenzene 0.0500 0.0364 72.8 20.0-120 1,3-Dichlorobenzene 0.0500 0.0357 71.4 17.0-120 1,4-Dichlorobenzene 0.0500 0.0359 71.8 18.0-120 3,3-Dichlorobenzidine 0.100 0.0823 82.3 44.0-120 2,4-Dinitrotoluene 0.0500 0.0508 102 49.0-124 1 Cp 2 Tc 3 Ss 4 Cn 5 Sr 6 Qc 7 Gl 8 Al 9 Sc ACCOUNT:PROJECT:SDG:DATE/TIME:PAGE: Tetra Tech Inc. - UT L1540989 10/14/22 15:00 28 of 34 ACCOUNT:PROJECT:SDG:DATE/TIME:PAGE: Tetra Tech Inc. - UT L1540989 10/14/22 16:18 28 of 34 QUALITY CONTROL SUMMARYWG1935558 Semi Volatile Organic Compounds (GC/MS) by Method 8270C L1540989-01,02 Laboratory Control Sample (LCS) (LCS) R3844977-1 10/04/22 13:42 Spike Amount LCS Result LCS Rec. Rec. Limits LCS Qualifier Analyte mg/l mg/l %% 2,6-Dinitrotoluene 0.0500 0.0456 91.2 46.0-120 Fluoranthene 0.0500 0.0444 88.8 51.0-120 Fluorene 0.0500 0.0438 87.6 47.0-120 Hexachlorobenzene 0.0500 0.0380 76.0 44.0-120 Hexachloro-1,3-butadiene 0.0500 0.0376 75.2 19.0-120 Hexachlorocyclopentadiene 0.0500 0.0140 28.0 15.0-120 Hexachloroethane 0.0500 0.0382 76.4 15.0-120 Indeno(1,2,3-cd)pyrene 0.0500 0.0390 78.0 49.0-122 Isophorone 0.0500 0.0378 75.6 36.0-120 Naphthalene 0.0500 0.0319 63.8 27.0-120 Nitrobenzene 0.0500 0.0414 82.8 27.0-120 n-Nitrosodimethylamine 0.0500 0.0235 47.0 10.0-120 n-Nitrosodiphenylamine 0.0500 0.0355 71.0 47.0-120 n-Nitrosodi-n-propylamine 0.0500 0.0449 89.8 31.0-120 Phenanthrene 0.0500 0.0389 77.8 46.0-120 Benzylbutyl phthalate 0.0500 0.0424 84.8 43.0-121 Bis(2-ethylhexyl)phthalate 0.0500 0.0413 82.6 43.0-122 Di-n-butyl phthalate 0.0500 0.0440 88.0 49.0-121 Diethyl phthalate 0.0500 0.0464 92.8 48.0-122 Dimethyl phthalate 0.0500 0.0456 91.2 48.0-120 Di-n-octyl phthalate 0.0500 0.0410 82.0 42.0-125 Pyrene 0.0500 0.0409 81.8 47.0-120 1,2,4-Trichlorobenzene 0.0500 0.0386 77.2 24.0-120 4-Chloro-3-methylphenol 0.0500 0.0367 73.4 40.0-120 2-Chlorophenol 0.0500 0.0275 55.0 25.0-120 2,4-Dichlorophenol 0.0500 0.0364 72.8 36.0-120 2,4-Dimethylphenol 0.0500 0.0356 71.2 33.0-120 4,6-Dinitro-2-methylphenol 0.0500 0.0452 90.4 38.0-138 2,4-Dinitrophenol 0.0500 0.0413 82.6 10.0-120 2-Nitrophenol 0.0500 0.0370 74.0 31.0-120 4-Nitrophenol 0.0500 0.0133 26.6 10.0-120 Pentachlorophenol 0.0500 0.0369 73.8 23.0-120 Phenol 0.0500 0.0111 22.2 10.0-120 2,4,6-Trichlorophenol 0.0500 0.0402 80.4 42.0-120 (S) 2-Fluorophenol 29.3 10.0-120 (S) Phenol-d5 20.7 10.0-120 (S) Nitrobenzene-d5 75.2 10.0-127 (S) 2-Fluorobiphenyl 73.1 10.0-130 (S) 2,4,6-Tribromophenol 77.5 10.0-155 (S) p-Terphenyl-d14 65.8 10.0-128 1 Cp 2 Tc 3 Ss 4 Cn 5 Sr 6 Qc 7 Gl 8 Al 9 Sc ACCOUNT:PROJECT:SDG:DATE/TIME:PAGE: Tetra Tech Inc. - UT L1540989 10/14/22 15:00 29 of 34 ACCOUNT:PROJECT:SDG:DATE/TIME:PAGE: Tetra Tech Inc. - UT L1540989 10/14/22 16:18 29 of 34 QUALITY CONTROL SUMMARYWG1935558 Semi Volatile Organic Compounds (GC/MS) by Method 8270C L1540989-01,02 L1540990-02 Original Sample (OS) • Matrix Spike (MS) • Matrix Spike Duplicate (MSD) (OS) L1540990-02 10/04/22 16:56 • (MS) R3844977-3 10/04/22 17:17 • (MSD) R3844977-4 10/04/22 17:39 Spike Amount Original Result MS Result MSD Result MS Rec. MSD Rec. Dilution Rec. Limits MS Qualifier MSD Qualifier RPD RPD Limits Analyte mg/l mg/l mg/l mg/l %%%%% Acenaphthene 0.0500 ND 0.0314 0.0364 62.8 72.8 1 28.0-120 14.7 25 Acenaphthylene 0.0500 ND 0.0327 0.0356 65.4 71.2 1 31.0-121 8.49 25 Anthracene 0.0500 ND 0.0302 0.0371 60.4 74.2 1 36.0-120 20.5 23 Benzidine 0.100 ND 0.0108 0.0209 10.8 20.9 1 10.0-120 J3 63.7 37 Benzo(a)anthracene 0.0500 ND 0.0310 0.0362 62.0 72.4 1 39.0-120 15.5 23 Benzo(b)fluoranthene 0.0500 ND 0.0306 0.0375 61.2 75.0 1 37.0-120 20.3 23 Benzo(k)fluoranthene 0.0500 ND 0.0318 0.0372 63.6 74.4 1 37.0-120 15.7 26 Benzo(g,h,i)perylene 0.0500 ND 0.0298 0.0354 59.6 70.8 1 37.0-123 17.2 25 Benzo(a)pyrene 0.0500 ND 0.0341 0.0408 68.2 81.6 1 37.0-120 17.9 24 Bis(2-chlorethoxy)methane 0.0500 ND 0.0301 0.0333 60.2 66.6 1 17.0-120 10.1 31 Bis(2-chloroethyl)ether 0.0500 ND 0.0311 0.0336 62.2 67.2 1 14.0-120 7.73 33 2,2-Oxybis(1-Chloropropane) 0.0500 ND 0.0277 0.0298 55.4 59.6 1 18.0-120 7.30 34 4-Bromophenyl-phenylether 0.0500 ND 0.0296 0.0364 59.2 72.8 1 37.0-120 20.6 24 2-Chloronaphthalene 0.0500 ND 0.0296 0.0331 59.2 66.2 1 29.0-120 11.2 28 4-Chlorophenyl-phenylether 0.0500 ND 0.0338 0.0407 67.6 81.4 1 36.0-120 18.5 23 Chrysene 0.0500 ND 0.0318 0.0379 63.6 75.8 1 38.0-120 17.5 23 Dibenz(a,h)anthracene 0.0500 ND 0.0310 0.0365 62.0 73.0 1 36.0-121 16.3 24 1,2-Dichlorobenzene 0.0500 ND 0.0269 0.0294 53.8 58.8 1 18.0-120 8.88 40 1,3-Dichlorobenzene 0.0500 ND 0.0257 0.0284 51.4 56.8 1 15.0-120 9.98 40 1,4-Dichlorobenzene 0.0500 ND 0.0261 0.0287 52.2 57.4 1 17.0-120 9.49 40 3,3-Dichlorobenzidine 0.100 ND 0.0591 0.0672 59.1 67.2 1 10.0-134 12.8 30 2,4-Dinitrotoluene 0.0500 ND 0.0431 0.0464 86.2 92.8 1 39.0-125 7.37 25 2,6-Dinitrotoluene 0.0500 ND 0.0374 0.0421 74.8 84.2 1 36.0-120 11.8 27 Fluoranthene 0.0500 ND 0.0341 0.0415 68.2 83.0 1 41.0-121 19.6 22 Fluorene 0.0500 ND 0.0335 0.0400 67.0 80.0 1 37.0-120 17.7 24 Hexachlorobenzene 0.0500 ND 0.0288 0.0345 57.6 69.0 1 35.0-122 18.0 24 Hexachloro-1,3-butadiene 0.0500 ND 0.0275 0.0305 55.0 61.0 1 12.0-120 10.3 34 Hexachlorocyclopentadiene 0.0500 ND 0.0117 0.0134 23.4 26.8 1 10.0-120 13.5 33 Hexachloroethane 0.0500 ND 0.0268 0.0303 53.6 60.6 1 10.0-120 12.3 40 Indeno(1,2,3-cd)pyrene 0.0500 ND 0.0303 0.0354 60.6 70.8 1 38.0-125 15.5 24 Isophorone 0.0500 ND 0.0298 0.0329 59.6 65.8 1 21.0-120 9.89 27 Naphthalene 0.0500 ND 0.0248 0.0272 49.6 54.4 1 10.0-120 9.23 31 Nitrobenzene 0.0500 ND 0.0337 0.0347 67.4 69.4 1 12.0-120 2.92 30 n-Nitrosodimethylamine 0.0500 ND 0.0214 0.0227 42.8 45.4 1 10.0-120 5.90 40 n-Nitrosodiphenylamine 0.0500 ND 0.0287 0.0330 57.4 66.0 1 37.0-120 13.9 24 n-Nitrosodi-n-propylamine 0.0500 ND 0.0360 0.0415 72.0 83.0 1 16.0-120 14.2 30 Phenanthrene 0.0500 ND 0.0301 0.0371 60.2 74.2 1 33.0-120 20.8 22 Benzylbutyl phthalate 0.0500 ND 0.0334 0.0404 66.8 80.8 1 34.0-126 19.0 24 Bis(2-ethylhexyl)phthalate 0.0500 ND 0.0325 0.0401 65.0 80.2 1 33.0-126 20.9 25 Di-n-butyl phthalate 0.0500 ND 0.0327 0.0401 65.4 80.2 1 35.0-128 20.3 23 1 Cp 2 Tc 3 Ss 4 Cn 5 Sr 6 Qc 7 Gl 8 Al 9 Sc ACCOUNT:PROJECT:SDG:DATE/TIME:PAGE: Tetra Tech Inc. - UT L1540989 10/14/22 15:00 30 of 34 ACCOUNT:PROJECT:SDG:DATE/TIME:PAGE: Tetra Tech Inc. - UT L1540989 10/14/22 16:18 30 of 34 QUALITY CONTROL SUMMARYWG1935558 Semi Volatile Organic Compounds (GC/MS) by Method 8270C L1540989-01,02 L1540990-02 Original Sample (OS) • Matrix Spike (MS) • Matrix Spike Duplicate (MSD) (OS) L1540990-02 10/04/22 16:56 • (MS) R3844977-3 10/04/22 17:17 • (MSD) R3844977-4 10/04/22 17:39 Spike Amount Original Result MS Result MSD Result MS Rec. MSD Rec. Dilution Rec. Limits MS Qualifier MSD Qualifier RPD RPD Limits Analyte mg/l mg/l mg/l mg/l %%%%% Diethyl phthalate 0.0500 ND 0.0385 0.0432 77.0 86.4 1 39.0-125 11.5 24 Dimethyl phthalate 0.0500 ND 0.0361 0.0409 72.2 81.8 1 37.0-120 12.5 24 Di-n-octyl phthalate 0.0500 ND 0.0314 0.0387 62.8 77.4 1 25.0-135 20.8 26 Pyrene 0.0500 ND 0.0318 0.0387 63.6 77.4 1 39.0-120 19.6 22 1,2,4-Trichlorobenzene 0.0500 ND 0.0291 0.0306 58.2 61.2 1 15.0-120 5.03 31 4-Chloro-3-methylphenol 0.0500 ND 0.0317 0.0316 63.4 63.2 1 26.0-120 0.316 27 2-Chlorophenol 0.0500 ND 0.0241 0.0230 48.2 46.0 1 18.0-120 4.67 34 2,4-Dichlorophenol 0.0500 ND 0.0309 0.0305 61.8 61.0 1 19.0-120 1.30 27 2,4-Dimethylphenol 0.0500 ND 0.0313 0.0305 62.6 61.0 1 15.0-120 2.59 28 4,6-Dinitro-2-methylphenol 0.0500 ND 0.0372 0.0404 74.4 80.8 1 10.0-144 8.25 39 2,4-Dinitrophenol 0.0500 ND 0.0384 0.0397 76.8 79.4 1 10.0-120 3.33 40 2-Nitrophenol 0.0500 ND 0.0303 0.0293 60.6 58.6 1 20.0-120 3.36 30 4-Nitrophenol 0.0500 ND 0.0151 0.0135 30.2 27.0 1 10.0-120 11.2 40 Pentachlorophenol 0.0500 ND 0.0301 0.0319 60.2 63.8 1 10.0-128 5.81 37 Phenol 0.0500 ND 0.0116 0.0100 23.2 20.0 1 10.0-120 14.8 40 2,4,6-Trichlorophenol 0.0500 ND 0.0334 0.0334 66.8 66.8 1 26.0-120 0.000 31 (S) 2-Fluorophenol 30.8 27.6 10.0-120 (S) Phenol-d5 22.0 18.4 10.0-120 (S) Nitrobenzene-d5 62.9 69.6 10.0-127 (S) 2-Fluorobiphenyl 62.5 67.3 10.0-130 (S) 2,4,6-Tribromophenol 63.0 63.5 10.0-155 (S) p-Terphenyl-d14 56.2 62.7 10.0-128 1 Cp 2 Tc 3 Ss 4 Cn 5 Sr 6 Qc 7 Gl 8 Al 9 Sc ACCOUNT:PROJECT:SDG:DATE/TIME:PAGE: Tetra Tech Inc. - UT L1540989 10/14/22 15:00 31 of 34 ACCOUNT:PROJECT:SDG:DATE/TIME:PAGE: Tetra Tech Inc. - UT L1540989 10/14/22 16:18 31 of 34 GLOSSARY OF TERMS Guide to Reading and Understanding Your Laboratory Report The information below is designed to better explain the various terms used in your report of analytical results from the Laboratory. This is not intended as a comprehensive explanation, and if you have additional questions please contact your project representative. Results Disclaimer - Information that may be provided by the customer, and contained within this report, include Permit Limits, Project Name, Sample ID, Sample Matrix, Sample Preservation, Field Blanks, Field Spikes, Field Duplicates, On-Site Data, Sampling Collection Dates/Times, and Sampling Location. Results relate to the accuracy of this information provided, and as the samples are received. Abbreviations and Definitions MDL Method Detection Limit. ND Not detected at the Reporting Limit (or MDL where applicable). RDL Reported Detection Limit. Rec.Recovery. RPD Relative Percent Difference. SDG Sample Delivery Group. (S) Surrogate (Surrogate Standard) - Analytes added to every blank, sample, Laboratory Control Sample/Duplicate and Matrix Spike/Duplicate; used to evaluate analytical efficiency by measuring recovery. Surrogates are not expected to be detected in all environmental media. U Not detected at the Reporting Limit (or MDL where applicable). Analyte The name of the particular compound or analysis performed. Some Analyses and Methods will have multiple analytes reported. Dilution If the sample matrix contains an interfering material, the sample preparation volume or weight values differ from the standard, or if concentrations of analytes in the sample are higher than the highest limit of concentration that the laboratory can accurately report, the sample may be diluted for analysis. If a value different than 1 is used in this field, the result reported has already been corrected for this factor. Limits These are the target % recovery ranges or % difference value that the laboratory has historically determined as normal for the method and analyte being reported. Successful QC Sample analysis will target all analytes recovered or duplicated within these ranges. Original Sample The non-spiked sample in the prep batch used to determine the Relative Percent Difference (RPD) from a quality control sample. The Original Sample may not be included within the reported SDG. Qualifier This column provides a letter and/or number designation that corresponds to additional information concerning the result reported. If a Qualifier is present, a definition per Qualifier is provided within the Glossary and Definitions page and potentially a discussion of possible implications of the Qualifier in the Case Narrative if applicable. Result The actual analytical final result (corrected for any sample specific characteristics) reported for your sample. If there was no measurable result returned for a specific analyte, the result in this column may state “ND” (Not Detected) or “BDL” (Below Detectable Levels). The information in the results column should always be accompanied by either an MDL (Method Detection Limit) or RDL (Reporting Detection Limit) that defines the lowest value that the laboratory could detect or report for this analyte. Uncertainty (Radiochemistry)Confidence level of 2 sigma. Case Narrative (Cn) A brief discussion about the included sample results, including a discussion of any non-conformances to protocol observed either at sample receipt by the laboratory from the field or during the analytical process. If present, there will be a section in the Case Narrative to discuss the meaning of any data qualifiers used in the report. Quality Control Summary (Qc) This section of the report includes the results of the laboratory quality control analyses required by procedure or analytical methods to assist in evaluating the validity of the results reported for your samples. These analyses are not being performed on your samples typically, but on laboratory generated material. Sample Chain of Custody (Sc) This is the document created in the field when your samples were initially collected. This is used to verify the time and date of collection, the person collecting the samples, and the analyses that the laboratory is requested to perform. This chain of custody also documents all persons (excluding commercial shippers) that have had control or possession of the samples from the time of collection until delivery to the laboratory for analysis. Sample Results (Sr) This section of your report will provide the results of all testing performed on your samples. These results are provided by sample ID and are separated by the analyses performed on each sample. The header line of each analysis section for each sample will provide the name and method number for the analysis reported. Sample Summary (Ss)This section of the Analytical Report defines the specific analyses performed for each sample ID, including the dates and times of preparation and/or analysis. Qualifier Description B The same analyte is found in the associated blank. E The analyte concentration exceeds the upper limit of the calibration range of the instrument established by the initial calibration (ICAL). J The identification of the analyte is acceptable; the reported value is an estimate. J3 The associated batch QC was outside the established quality control range for precision. J5 The sample matrix interfered with the ability to make any accurate determination; spike value is high. J6 The sample matrix interfered with the ability to make any accurate determination; spike value is low. J7 Surrogate recovery cannot be used for control limit evaluation due to dilution. 1 Cp 2 Tc 3 Ss 4 Cn 5 Sr 6 Qc 7 Gl 8 Al 9 Sc ACCOUNT:PROJECT:SDG:DATE/TIME:PAGE: Tetra Tech Inc. - UT L1540989 10/14/22 15:00 32 of 34 ACCOUNT:PROJECT:SDG:DATE/TIME:PAGE: Tetra Tech Inc. - UT L1540989 10/14/22 16:18 32 of 34 Pace Analytical National 12065 Lebanon Rd Mount Juliet, TN 37122 Alabama 40660 Nebraska NE-OS-15-05 Alaska 17-026 Nevada TN000032021-1 Arizona AZ0612 New Hampshire 2975 Arkansas 88-0469 New Jersey–NELAP TN002 California 2932 New Mexico ¹TN00003 Colorado TN00003 New York 11742 Connecticut PH-0197 North Carolina Env375 Florida E87487 North Carolina ¹DW21704 Georgia NELAP North Carolina ³41 Georgia ¹923 North Dakota R-140 Idaho TN00003 Ohio–VAP CL0069 Illinois 200008 Oklahoma 9915 Indiana C-TN-01 Oregon TN200002 Iowa 364 Pennsylvania 68-02979 Kansas E-10277 Rhode Island LAO00356 Kentucky ¹ ⁶KY90010 South Carolina 84004002 Kentucky ²16 South Dakota n/a Louisiana AI30792 Tennessee ¹ ⁴2006 Louisiana LA018 Texas T104704245-20-18 Maine TN00003 Texas ⁵LAB0152 Maryland 324 Utah TN000032021-11 Massachusetts M-TN003 Vermont VT2006 Michigan 9958 Virginia 110033 Minnesota 047-999-395 Washington C847 Mississippi TN00003 West Virginia 233 Missouri 340 Wisconsin 998093910 Montana CERT0086 Wyoming A2LA A2LA – ISO 17025 1461.01 AIHA-LAP,LLC EMLAP 100789 A2LA – ISO 17025 ⁵1461.02 DOD 1461.01 Canada 1461.01 USDA P330-15-00234 EPA–Crypto TN00003 ACCREDITATIONS & LOCATIONS ¹ Drinking Water ² Underground Storage Tanks ³ Aquatic Toxicity ⁴ Chemical/Microbiological ⁵ Mold ⁶ Wastewater n/a Accreditation not applicable * Not all certifications held by the laboratory are applicable to the results reported in the attached report. * Accreditation is only applicable to the test methods specified on each scope of accreditation held by Pace Analytical. 1 Cp 2 Tc 3 Ss 4 Cn 5 Sr 6 Qc 7 Gl 8 Al 9 Sc ACCOUNT:PROJECT:SDG:DATE/TIME:PAGE: Tetra Tech Inc. - UT L1540989 10/14/22 15:00 33 of 34 ACCOUNT:PROJECT:SDG:DATE/TIME:PAGE: Tetra Tech Inc. - UT L1540989 10/14/22 16:18 33 of 34 Appendix B Gas Chromatogram Analysis for Clean Harbors Samples Clean Harbors Samples GC and GC/MS Analysis Summary: Although some similar peaks can be found in several of the on-site and off-site samples, the chromatograms are significantly different. These analyses do not provide evidence of a positive match between the on-site and off-site samples. The labelled chromatograms are included as Attachment B-1. A more detailed discussion is provided below. i. Water - GC Fingerprint Sample ID Comment Major Peaks Labelled on Figure Conclusion 22H2736-02 Water #1, on-site 1 through 10, UCM 2.4 to 3.0 minutes (max approximately 2.75 minutes Except for peak 10, major peaks with RT <2 minutes are not found in off-site samples 22H2736-03 Water #2, off-site 1 through 10, no UCM No match to on-site sample 22H2736-05 RRC water, off-site 1 through 10, no UCM No match to on-site sample 22H2736-06 WC, off-site UCM 2.2 to 3.0 minutes (max approximately 2.5 minutes), several minor peaks at 2.4 to 2.6 minutes (not present in on- site sample) No match to on-site sample 22H2736-08 WC, off-site 1 through 10, no UCM No match to on-site sample Notes: UCM = unresolved complex mixture Discussion: All sample chromatograms (fingerprints) contain a major solvent peak, retention time (RT) less than 1.2 minutes and surrogate peaks at approximately 1.35 minutes and 1.5 minutes. Major peaks present in off-site samples are not found in on-site samples and/or relative ratios do not match. Major peaks present in on-site sample are not found in off-site samples. ii. Water – GC/MS Sample ID Comment Major Peaks Labelled on Figure Conclusion 22H2736-02 Water #1, on-site TIC: 1 through 9, I and S SIM: 2 through 7, 9, I and S Major peaks are internal standards and surrogates 22H2736-03 Water #2, off-site TIC: 3, 5, 6, I and S SIM: 6, I and S Ethanol, isopropyl alcohol, and acetone are common laboratory contaminants. No match to on-site sample. 22H2736-05 RRC water, off-site TIC: 5, 6, I and S SIM: 6, I and S Isopropyl alcohol, and acetone are common laboratory contaminants. No match to on-site sample. 22H2736-06 WC, off-site TIC: 5, 6, I and S SIM: 6, I and S Isopropyl alcohol, and acetone are common Sample ID Comment Major Peaks Labelled on Figure Conclusion laboratory contaminants. No match to on-site sample. 22H2736-08 WC, off-site TIC: 5, 6, I and S SIM: 6, I and S Isopropyl alcohol, and acetone are common laboratory contaminants. No match to on-site sample. Notes: I = internal standard S = surrogate SIM = select ion monitoring TIC = total ion chromatogram UCM = unresolved complex mixture Discussion: All sample chromatograms (fingerprints) contain internal standards and surrogates. Major peaks present in off-site samples and on-site sample are common laboratory contaminants (ethanol, isopropyl alcohol, and acetone). iii. Soil Sample ID Comment Major Peaks Labelled on Figure Conclusion 22H2736-01 Soil #1, on-site Multiple including number 5 and surrogates Except for peak 5, major peaks are not found in off- site samples 22H2736-04 RRC soil, off-site 1, 2, 3, 4 (not present in on-site sample) and surrogates No match to on-site sample 22H2736-07 WC soil, off-site UCM 5.5 to 7.5 minutes, peaks at 5.3 and 7.2 minutes (not present in on-site sample) and surrogates No match to on-site sample 22H2736-09 WC Base soil, off-site 3, 4, 5 (peak 3 not present in on- site sample) and surrogates No match to on-site sample Notes: UCM = unresolved complex mixture Discussion: All sample chromatograms (fingerprints) contain a major solvent peak, retention time (RT) less than 1.0 minute and surrogate peaks at approximately 1.3 minutes (labelled as 1a) and 1.6 minutes (labelled as 2a). Major peaks present in off-site samples are not found in on-site samples and/or relative ratios do not match. Major peaks present in on-site sample are not found in off-site samples. iv. Soil – GC/MS Sample ID Comment Major Peaks Labelled on Figure Conclusion 22H2736-01 Soil #1, on-site Bromomethane, ethanol, isopropyl alcohol, C9 and C10 alkyl benzenes, I and S Major peaks or alkyl benzenes, internal standards, and surrogates. 22H2736-04 RRC soil, off-site Bromomethane, I and S No match to on-site sample 22H2736-07 WC soil, off-site Bromomethane, I and S No match to on-site sample 22H2736-09 WC Base soil, off-site Bromomethane, I and S No match to on-site sample Notes: UCM = unresolved complex mixture Discussion: All sample chromatograms (fingerprints) contain a major solvent peak, retention time (RT) less than 1.0 minute and surrogate peaks at approximately 1.3 minutes and 1.6 minutes. Major peaks present in off- site samples are not found in on-site samples and/or relative ratios do not match. Major peaks present in on-site sample are not found in off-site samples. Attachment B-1 Labelled Chromatograms Appendix C Ogden City Sonde Measurements Specific Conductivity (µS/cm) Salinity (PSU)Resistivity (µS/cm)Total Dissolved Solids (ppt) pH s.u.) RDO Concentration (mg/L) Near 2550 8/16/2022 1966 1.01 558 1.28 7.9 6.8 Stock Rd & Midland 8/16/2022 1406 0.71 765 0.91 7.3 4.0 Recycled Earth Source 8/17/2022 2679 1.40 338 1.74 7.1 5.6 Recycled Earth Detention Pond 8/25/2022 1922 0.99 544 1.25 7.1 0.2 Wilson Canal Crossing 8/25/2022 1516 0.77 712 0.99 7.8 3.9 End of Pollutant Flow Path 8/25/2022 1301 0.66 854 0.85 7.9 1.9 Weber River At Discharge 8/25/2022 1212 0.61 890 0.79 8.1 7.4 Weber River Upstream 8/25/2022 752 0.37 1432 0.49 8.7 10.0 Weber River Down Stream 8/25/2022 991 0.49 1073 0.64 8.5 9.7 RE pond 9/27/2022 828 0.41 1450 0.54 7.5 0.8 Stock and midland 9/27/2022 807 0.40 1422 0.53 8.0 5.2 2550 catch basin upstream RE flow 9/27/2022 1136 0.57 985 0.74 7.9 6.8 Re flow flared end section 9/27/2022 1260 0.61 1153 0.79 8.3 7.2 Pipe discharge RE flow 9/27/2022 1270 0.64 865 0.83 7.8 3.4 Re flow Wilson canal 9/27/2022 1263 0.64 889 0.82 8.1 6.0 RE flow 21st street 9/27/2022 1435 0.72 854 0.93 7.9 2.0 Daily Average Date Location Description Appendix D Standard Operating Procedures Tetra Tech, Inc. – Environmental SOP No. 002 Page 1 of 8 Title: Recording Notes in Field Logbooks and Daily Report Forms Revision No. 3, March 2019 Last Reviewed: March 2019 1.0 BACKGROUND Complete and accurate field documentation is critical to a successful project and the field log book is an important tool to support field documentation needs. The field logbook should include detailed records of all field activities, document interviews with people, and record observations of conditions at a site. Entries should be described in a level of detail to allow personnel to reconstruct, after the fact, activities and events that occurred during their field assignm ents. Furthermore, entries should be limited to facts. Avoid speculation related to field events and do not record hearsay or unfounded information that may be presented by other parties during field activities. For example, do not record theories regarding the presence or absence of contamination when you are collecting field screening data or speculation regarding the reasons for a property owner’s refusal to grant access for sampling. Field logbooks are considered accountable documents in enforcement proceedings and may be subject to review. Therefore, the entries in the logbook must be accurate and detailed but should not contain speculative information that could conflict with information presented in subsequent project deliverables and correspondence. Also, be aware that the field logbooks for a site may be a primary source of information for depositions and other legal proceedings that may occur months or years after field work is complete and long after our memories have faded. The accuracy, neatness, and completeness of field logbooks are essential for recreating a meaningful account of events. 1.1 PURPOSE The purpose of this standard operating procedure (SOP) is to provide guidance to ensure that field logbook documentation collected during field activities meets all requirements for its later use. Among other things, field logbooks may be used for: • Identifying, locating, labeling, and tracking samples • Recording site activities and the whereabouts of field personnel throughout the day • Documenting any deviations from the project approach, work plans, quality assurance project plans, health and safety plans, sampling plans, and any changes in project personnel • Recording arrival and departure times for field personnel each morning and evening and weather conditions each day Tetra Tech, Inc. – Environmental SOP No. 002 Page 2 of 8 Title: Recording Notes in Field Logbooks and Daily Report Forms Revision No. 3, March 2019 Last Reviewed: March 2019 • Describing photographs taken during the project.In addition, the data recorded in the field logbook may later assist in the interpretation of analytical results. A complete and accurate logbook also aids in maintaining quality control, because it can verify adherence to project scope and requirements. 1.2 SCOPE This SOP establishes the general requirements and procedures for documenting site activities in the field logbook. 1.3 DEFINITIONS None. 1.4 REFERENCES Compton, R.R. 1985. Geology in the Field . John Wiley and Sons. New York, NY. 1.5 REQUIREMENTS AND RESOURCES The following items are required for field notation: • Field logbooks • Ballpoint pens or Sharpies with permanent waterproof ink • 6-inch ruler (optional) Field logbooks should be bound (sewn) with water-resistant and acid-proof covers, and each page should have preprinted lines, numbered pages, and a single column. They should be approximately 71/2 by 41/2 inches or 81/2 by 11 inches in size. Loose-leaf sheets are not acceptable for use as field notes.* If notes are written on loose paper, they must be transcribed as soon as possible into a bound field logbook by the same person who recorded the notes originally. *Note: Data collection logs and field forms used to record field measurements and data are acceptable as loose-leaf sheets maintained in a three-ring binder with numbered pages. Ideally, distribution of logbooks should be controlled by a designated person in each office. This person assigns a document control number to each logbook and records the assignment of each logbook distributed (name of person, date distributed, and project number). The purpose of this Tetra Tech, Inc. – Environmental SOP No. 002 Page 3 of 8 Title: Recording Notes in Field Logbooks and Daily Report Forms Revision No. 3, March 2019 Last Reviewed: March 2019 procedure is to ensure the integrity of the logbook before its use in the field, and to document each logbook assigned to a project. If more than one logbook is assigned to a project, this process will ensure that all logbooks are accounted for at project closeout. 2.0 PROCEDURES The following subsections provide general guidelines and formatting requirements for field logbooks, and detailed procedures for completing field logbooks. 2.1 GENERAL GUIDELINES • A separate field logbook must be maintained for each project. If a site consists of multiple subsites (or operable units), designate a separate field logbook for each subsite. Similarly, if multiple activities are occurring simultaneously requiring more than one task leader (well installation, private well sampling, or geophysical survey.), each task leader should maintain a separate field logbook to ensure that each activity is documented in sufficient detail. • At larger sites, a general field log may be kept at the site trailer or designated field office to track site visitors, document daily safety meetings, and record overall site issues or occurrences. • Data from multiple subsites may be entered in one logbook that contains only one type of information for special tasks, such as periodic well water-level measurements. • All logbooks must be bound and contain consecutively numbered pages. • No pages can be removed from the logbook for any purpose. • All information must be entered using permanent, waterproof ink. Do not use pens with “wet ink,” because the ink may wash out if the paper gets wet. Pencils are not permissible for field notes because information can be erased. The entries should be written dark enough so that the logbook can be easily photocopied. • Be sure that all entries are legible. Use print rather than cursive and keep the logbook pages free of dirt and moisture to the extent possible. • Do not enter information in the logbook that is not related to the project. The language used in the logbook should be factual and objective. Avoid speculation that could conflict with information presented in subsequent project deliverables and correspondence (see Section 1.0 above). • Use military time, unless otherwise specified by the client. • Include site sketches, as appropriate. • Begin a new page for each day’s notes. Tetra Tech, Inc. – Environmental SOP No. 002 Page 4 of 8 Title: Recording Notes in Field Logbooks and Daily Report Forms Revision No. 3, March 2019 Last Reviewed: March 2019 • Include the date at the top of each page. • At the end of a day, draw a single diagonal line through any unused lines on the page, and sign at the bottom of the page. Note and implement any client specific requirements (for example, some U.S. Environmental Protection Agency (EPA) programs require each logbook page to be signed). • Write notes on every line of the logbook. Do not skip any pages or parts of pages unless a day’s activity ends in the middle of a page. • If a line is left blank for some reason, cross out (with a single line) and initial to prevent unauthorized entries. • Cross out (with a single line) and initial any edits to the logbook entries. Edits should only be made if the initial entry is illegible or erroneous. Do not make corrections for grammar. 2.2 LOGBOOK AND DAILY REPORT FORM FORMAT The layout and organization of each field logbook and daily report form should be consistent and generally follow the format guidelines presented below. Some clients or contracts may have specific formatting guidelines that differ somewhat from this SOP; review client requirements at the start of the project to help ensure any client-specific guidelines are integrated. 2.2.1 Logbook Cover Write the following information on the front cover of each logbook using a Sharpie or similar type permanent ink marker: • Logbook document control number (assigned by issuer) • “Book # of #” (determined by the project manager if there is more than one logbook for the project) • Contract and task order numbers • Name of the site and site location (city and state) • Name of subsite (or operable unit), if applicable • Type of activity (if logbook is for specific activity, such as well installation or indoor air sampling) • Beginning and ending dates of activities entered in the logbook 2.2.2 Inside Cover or First Page Tetra Tech, Inc. – Environmental SOP No. 002 Page 5 of 8 Title: Recording Notes in Field Logbooks and Daily Report Forms Revision No. 3, March 2019 Last Reviewed: March 2019 Spaces are usually provided on the inside front cover (or the opening page in some logbooks) for the company name, address, contact names, and telephone numbers. If preprinted spaces for this information are not provided in the logbook, write the information on the first available page. Information to be included on the inside front cover or first page includes: • Tetra Tech project manager and site manager and phone numbers • Tetra Tech office address • Client contact and phone number • Site safety officer and phone number • Emergency contact phone number (911, if applicable, or nearest hospital) • Subcontractor contacts and phone numbers • Site property owner or property manager contact information 2.2.2 Daily Report Form The daily report form is a pre-printed template that uses loose leaf pages, numbered sequentially, for each day of work. Each field data form will include a field to enter project-specific information. All the general guidelines and procedures for field logbook entries will apply for entries in the field form. Specific details for daily report form entries are provided in Section 2.3. 2.3 ENTERING INFORMATION IN THE LOGBOOK OR DAILY REPORT FORM The following lists provide guidance on the type of information to be included in a typical field logbook and daily report form. This guidance is general and is not intended to be all-inclusive. Certain projects or clients may specify logbook requirements that are beyond the elements presented in this SOP. General Daily Entries: • Document what time field personnel depart the Tetra Tech office and arrive at the hotel or site. If permitted by the client to charge travel time for site work, document what time personnel leave and arrive at the hotel each day. (This information may be needed at remote sites where hotel accommodations are not near the site.) • Indicate when all subcontractors arrive and depart the site. • Note weather conditions. • Include the date at the top of each page. Tetra Tech, Inc. – Environmental SOP No. 002 Page 6 of 8 Title: Recording Notes in Field Logbooks and Daily Report Forms Revision No. 3, March 2019 Last Reviewed: March 2019 • Document that a site safety meeting was held and include the basic contents of the meeting. • List the level of protection to be used for health and safety. • Summarize the day’s planned activities. • Summarize which activities each field team member will be doing. Field Activity Entries: • Refer to field data collection forms for details about field data collection activities (for example time, date, depth of samples, field measurements). If separate field sampling sheets are not used, see section below regarding logbook entries for sampling activities. • Refer to well purge forms, well construction logs, and other activity-specific forms as applicable rather than including this type of information in the field logbook. These other forms allow the information to be more accessible at a later date. • List any air monitoring instrumentation used, with readings and locations. • Refer to instrument field logs for equipment calibration information. • Summarize pertinent conversations with site visitors (agency representatives, property owners, client contacts, and local citizens). • Summarize any problems or deviations from the quality assurance project plan (QAPP) or field sampling plan. • Document the activities and whereabouts of each team member. (As indicated in Section 2.1, multiple logbooks may be required to ensure sufficient detail for contemporaneous activities). • Indicate when utility clearances are completed, including which companies participated. • Indicate when verbal access to a property is obtained. • Include names, addresses, and phone numbers of any pertinent site contacts, property owners, and any other relevant personnel. • Document when lunch breaks or other work stoppages occur. • Include approximate scale for all diagrams. If a scale is not available, write “not to scale” on the diagram. Indicate the north direction on all maps and cross-sections, and label features on each diagram. Sampling Activity Entries: The following information should typically be on a sample collection log and referenced in the log book. If the project does not use sample sheets as a result of project-specific requirements, this information should be included in the logbook. • Location description • Names of samplers Tetra Tech, Inc. – Environmental SOP No. 002 Page 7 of 8 Title: Recording Notes in Field Logbooks and Daily Report Forms Revision No. 3, March 2019 Last Reviewed: March 2019 • Collection time • Designation of sample as a grab or composite sample • Type of sample (water, sediment, soil gas, or other medium) • On-site measurement data (examples: pH, temperature, dissolved oxygen, and specific conductivity) • Field observations (odors, colors, weather) • Preliminary sample description • Type of preservative used. • Instrument readings, if applicable Closing Daily Entries: • Describe decontamination procedures (personnel and equipment). • Describe handling and disposition of any investigation-derived wastes. • Summarize which planned activities were completed and which ones were not. • Note the times that personnel depart site for the day. • Summarize any activities conducted after departing the site (paperwork, sample packaging, etc.). This may be required to document billable time incurred after field activities were completed for the day. Photographic Log Entries: • For digital photographs, indicate in the text that photographs were taken and the location where the photographs can be found (for example, in the project file). • Camera and serial # • Photographer • Date and time of photograph • Sequential number of the photograph and the film roll number or disposable camera used (if applicable) • Direction of photograph • Description of photograph 2.4 LOGBOOK AND DAILY REPORT FORM STORAGE Tetra Tech, Inc. – Environmental SOP No. 002 Page 8 of 8 Title: Recording Notes in Field Logbooks and Daily Report Forms Revision No. 3, March 2019 Last Reviewed: March 2019 Custody of logbooks and daily report forms must be maintained at all times. During field activities, field personnel must keep the logbooks and daily report forms in a secure place (locked car, trailer, or field office) when the logbook is not in personal possession. When the field work is over, the logbook should be included in the project file, which should be in a secured file cabinet. The logbook or daily report forms may be referenced in preparing subsequent reports and may also be scanned for inclusion as an appendix to a report. However, it is advisable to obtain direction directly from the client before including the logbook as a report appendix, because its inclusion may not be appropriate in all cases. 2.5 HEALTH AND SAFETY CONSIDERATIONS In addition to the procedures outlined in this SOP, all field staff must be aware of and follow the health and safety practices that result from the Activity Hazard Analyses (AHAs) for a project. The AHAs include critical safety procedures, required controls, and minimum personal protective equipment (PPE) necessary to address potential hazards. The hazards specific to project tasks must be identified and controlled to the extent practicable and communicated to all project personnel via the approved, project-specific Health and Safety Plan (HASP). Tetra Tech, Inc. – Environmental SOP No. 007 Page 1 of 20 Title: Soil Sampling Revision No. 3, February 2017 Last Reviewed: March 2019 1.0 BACKGROUND Soil is sampled for three main reasons: (1) for chemical analysis in the laboratory, (2) for physical analysis in the laboratory, or (3) for evaluation in the field (for example, visual classification, assessment of staining, and field screening). These three sampling objectives can be achieved separately or in combination. Sampling locations are typically chosen to provide information in both the horizontal and vertical directions. A sampling and analysis plan or a site-specific quality assurance project plan (QAPP) is used to outline sampling methods and to provide a preliminary rationale for sampling locations. Sampling locations may be adjusted in the field based on the screening or sampling methods used and the physical features of the area. 1.1 PURPOSE This standard operating procedure (SOP) establishes the requirements and procedures for soil sampling. Soil is sampled to evaluate the chemical and physical characteristics of surface and subsurface soils. 1.2 SCOPE This SOP describes procedures for soil sampling in different areas using various implements. It includes procedures for test pit, surface soil, and subsurface soil sampling and describes a variety of soil sampling devices. 1.3 DEFINITIONS Bucket Auger: A type of auger that consists of a cylindrical bucket 10 to 72 inches in diameter with teeth arranged at the bottom. Composite Sample: A sample that consists of soil combined from more than one discrete location. Typically, composite samples consist of soil obtained from several locations and homogenized in a stainless steel or Teflon bowl, tray, or plastic bag. Tetra Tech, Inc. – Environmental SOP No. 007 Page 2 of 20 Title: Soil Sampling Revision No. 3, February 2017 Last Reviewed: March 2019 Core Sampler: A thin-walled cylindrical metal tube with diameter of 0.5 to 3 inches, a tapered nosepiece, a “T” handle to facilitate sampler deployment and retrieval, and a check valve (flutter valve) in the headpiece. Direct-push technology (DPT): Investigation tools that drive or push small-diameter rods and tools (typically not exceeding 4 inches in diameter) into the subsurface by hydraulic or percussive methods. Geoprobe Systems is a manufacturer of DPT equipment, and its brand name is often used interchangeably with “DPT.” EnCore Sampler: A disposable volumetric sampling device. It comes in sample sizes of 5 and 25 grams. It is a hermetically sealed, single-use soil sampler made from a high-tech, inert polymer. EnCore samplers are used to collect soil samples with zero headspace, as required for volatile organic compound (VOC) analysis (including purgeable total petroleum hydrocarbons). Each sample is collected using a reusable “T” handle. Grab Sample: A sample collected from a discrete location or depth. Hand Auger: An instrument attached to the bottom of a length of pipe that has a crossarm or “T” handle at the top. The auger can be closed-spiral or open-spiral. Spatulas or Spoons: Stainless steel or disposable instruments for collecting loose unconsolidated material. Split-Spoon (or Split-Barrel) Sampler: A thick-walled steel tube that is split lengthwise. A cutting shoe is attached to the lower end; the upper end contains a check valve and is connected to drill rods. Terra Core Sampler: A disposable volumetric sampling device. It comes in sample sizes of 5 and 10 grams and is part of a sampling kit. It is a single-use sampler used to collect soil samples with zero headspace, as required for VOCs. Each sample is collected with the disposable coring device. However, unlike the EnCore sampler, the sample is placed directly into a 40-milliliter (mL) glass volatile organics analysis (VOA) vial after the soil is collected. The VOA vial is included in the sampling kit. Tetra Tech, Inc. – Environmental SOP No. 007 Page 3 of 20 Title: Soil Sampling Revision No. 3, February 2017 Last Reviewed: March 2019 Thin-Wall Tube Sampler: A steel tube (1 to 3 millimeters thick) with a tapered bottom edge for cutting. The upper end is fastened to a check valve that is attached to drill rods. Trier: A tube cut in half lengthwise with a sharpened tip that allows for collecting sticky solids or loosening cohesive soils. Trowel: A metal or disposable tool with a scooped blade 4 to 8 inches long and 2 to 3 inches wide with a handle. VOA Plunger: A disposable, plastic, single-use soil device to collect samples for analysis of VOCs. 1.4 REFERENCES ASTM International (ASTM). D1452-09, Standard Practice for Soil Exploration and Sampling by Auger Borings, West Conshohocken, PA. 2009. ASTM D1586-11, Standard Test Method for Standard Penetration Test (SPT) and Split-Barrel Sampling of Soils, ASTM International, West Conshohocken, PA. 2011. ASTM D1587-08, Standard Practice for Thin-Walled Tube Sampling of Fine-Grained Soils for Geotechnical Purposes, ASTM International, West Conshohocken, PA. 2012. ASTM D2488-09a, Standard Practice for Description and Identification of Soils (Visual- Manual Procedure), ASTM International, West Conshohocken, PA. 2009. ASTM D4220 / D4220M-14, Standard Practices for Preserving and Transporting Soil Samples, ASTM International, West Conshohocken, PA. 2014. ASTM D4700-91, Standard Guide for Soil Sampling from the Vadose Zone, West Conshohocken, PA. 2006. ASTM D6151-08, Standard Practice for Using Hollow-Stem Augers for Geotechnical Exploration and Soil Sampling, ASTM International, West Conshohocken, PA. 2008. ASTM D6286-12, Standard Guide for Selection of Drilling Methods for Environmental Site Characterization, ASTM International, West Conshohocken, PA. 2012. ASTM D6282 / D6282M-14, Standard Guide for Direct Push Soil Sampling for Environmental Site Characterizations, ASTM International, West Conshohocken, PA. 2014. Tetra Tech, Inc. – Environmental SOP No. 007 Page 4 of 20 Title: Soil Sampling Revision No. 3, February 2017 Last Reviewed: March 2019 ASTM D6640-01 (2015), Standard Practice for Collection and Handling of Soils Obtained in Core Barrel Samplers for Environmental Investigations, ASTM International, West Conshohocken, PA. 2015. ASTM D6907-05 (2010), Standard Practice for Sampling Soils and Contaminated Media with Hand- Operated Bucket Augers, ASTM International, West Conshohocken, PA. 2010. U.S. Environmental Protection Agency (EPA). 1980. Samplers and Sampling Procedures for Hazardous Waste Streams. EPA/600/2-80/018. January. EPA. 1987. A Compendium of Superfund Field Operations Methods. OSWER Directive 9355.0-14 EPA/540/P-87/001. EPA. 1989. Soil Sampling Quality Assurance Users Guide; Second Edition. EPA/600/8-89/046. March. EPA. 1991. Handbook of Suggested Practices for the Design and Installation of Ground- Water Monitoring Wells. EPA/600/4-89/034. March. EPA. 1992. Preparation of Soil Sampling Protocol: Techniques and Strategies. EPA/600/SR-92/128. EPA. 2001a. Soil Sampling. Environmental Response Team SOP #2012 (Rev. #1.0, 07/11/01) https://response.epa.gov/sites/2107/files/2012-r10.pdf EPA. 2001b. Environmental Investigations Standard Operating Procedures and Quality Assurance Manual. November. https://www.orau.org/ptp/PTP%20Library/library/EPA/samplings/eisopqam.pdf EPA. 2002. Method 5035A (SW-846): Closed-System Purge-and-Trap and Extraction for Volatile Organics in Soil and Waste Samples, Draft Revision 1. https://www.epa.gov/sites/production/files/2015-12/documents/5035a_r1.pdf EPA. 2014. Sampler’s Guide, Contract Laboratory Program Guidance for Field Samplers. EPA/540/R-104/013. October. https://www.epa.gov/sites/production/files/2015- 03/documents/samplers_guide.pdf 1.5 REQUIREMENTS AND RESOURCES Soil sampling requires the use of one or more of the following types of equipment: •Spoon and spatula •Trowel •Shovel or spade •Trier •Core sampler •EnCore sampler Tetra Tech, Inc. – Environmental SOP No. 007 Page 5 of 20 Title: Soil Sampling Revision No. 3, February 2017 Last Reviewed: March 2019 •Terra Core sampler •VOA plunger •Hand auger •Bucket auger •Split-spoon •Thin-wall tube In addition, the following equipment may also be needed for various methods: •Sample containers, labels, and chain-of-custody forms •Logbook and field forms •Stakes or flags for marking sample locations •Tape for measuring recovery •Soil classification information •Wax or caps for sealing ends of thin-wall tube •“T” Handles •Stainless steel or Teflon bowls, aluminum pans, or other vessels for composite sampling (made from material that will not interfere with the planned analyses) •Plastic sheeting •Decontamination equipment •Drilling equipment •Backhoe •Health and safety equipment 2.0 SOIL SAMPLING PROCEDURES This SOP presents procedures for collecting test pit, surface soil, and subsurface soil samples. The site sampling plan will specify which of the following procedures will be used. Soil samples for chemical analysis should be collected in order of decreasing volatility, typically in the following order: (1) volatile organics, (2) semi-volatile organics, and (3) metals. Samples for physical analysis can be containerized after the chemical samples have been containerized. Typical physical analyses conducted include (1) grain size distribution, (2) moisture content, (3) saturated permeability, (4) unsaturated permeability, and (5) Atterberg limits. Additionally, visual descriptions of samples, using the Tetra Tech, Inc. – Environmental SOP No. 007 Page 6 of 20 Title: Soil Sampling Revision No. 3, February 2017 Last Reviewed: March 2019 Unified Soil Classification System (USCS, ASTM D2488-09a), should be recorded. Field tests such as head-space analysis can also be conducted using a photoionization detector or a flame ionization detector before samples are collected for chemical or physical analysis. Soil samples for chemical analysis can be collected either as grab samples or as composite samples. A grab sample is collected from a discrete location or depth. A composite sample consists of soil combined from more than one discrete location. Typically, composite samples consist of soil obtained from several locations and homogenized in a stainless steel or Teflon bowl, tray, or plastic bag. Refer to the site-specific QAPP for the methodology for composite sample collection. Samples for VOC analysis should not be composited. All non-disposable equipment used for soil sampling should be decontaminated between sampling locations in accordance with SOP 026, General Equipment Decontamination. 2.1 SOIL SAMPLE COLLECTION PROCEDURES Soil samples can be collected as discrete samples for VOC analysis using specialized equipment for preservation in the laboratory or in the field. Samples for VOC analysis should not be composited. Soil samples collected for non-VOC analysis can be collected as either grab or composite samples using standard equipment. 2.1.1 Procedure for Preserving and Collecting Soil Samples for VOC Analysis Samples collected for VOC analysis using traditional methods, such as collection in ajar with no preservation, are shown to yield non-representative results based on loss of VOCs. Samples can be preserved with methanol or sodium bisulfite to reduce volatilization and biodegradation to minimize loss of VOCs. However, these preservatives are not compatible with all VOCs; refer to the unique requirements in the project-specific QAPP or work plan. Preservatives may be added to containers by the laboratory before samples are collected, or preservatives may be added in the field. Alternatively, samples may be collected directly using devices like the EnCore sampler, which minimizes soil contact with the atmosphere. The specific sampling methodology will be identified in the project-specific QAPP or work Tetra Tech, Inc. – Environmental SOP No. 007 Page 7 of 20 Title: Soil Sampling Revision No. 3, February 2017 Last Reviewed: March 2019 plan. Be aware that other methods of sample preservation (such as freezing) are available (EPA 2014), but are not detailed in this SOP. Soil samples to be preserved in the laboratory are collected using SW-846 Method 5035A (EPA 2002). For samples preserved in the field, laboratories may perform low-level analysis (sodium bisulfate preservation) or high- to medium-level analysis (methanol preservation), depending on the project- specific QAPP. The following procedures outline the steps necessary for collecting soil samples to be preserved at the laboratory and for collecting soil samples to be preserved in the field with methanol or sodium bisulfate. 2.1.1.1 Soil Samples to be Preserved at the Laboratory EnCore Sampler Soil samples collected for VOC analysis that are to be preserved at the laboratory may be obtained using a hand-operated, hermetically sealed sample vial such as an EnCore sampler. Each sample is collected using a reusable sampling handle (“T” handle) that can be provided with the EnCore sampler when it is requested and purchased. Collect the soil sample in the following manner for each EnCore sampler. The EnCore sampler is loaded into the “T” handle with the plunger fully depressed. Press the “T” handle into the soil to be sampled. The plunger will be forced upward as the cavity fills with soil. When the sampler is full, rotate the plunger and lock it into place using the “T” handle. If the plunger does not lock, then it is not filled with soil. Soft soil may require several plunges or soil may be forced against a hard surface such as a decontaminated sample trowel to ensure headspace has been eliminated. Remove soil from the outside of the sampler so a tight seal can be made between the sample cap and the O-ring. With soil slightly piled above the rim of the sampler, force the cap on until the catches hook the side of the sampler. Remove any surface soil from outside of the sampler and place the sampler in the foil bag provided with the sampler. Seal the bag and label it with sample location information. Typically, collect three EnCore samplers per sample location. Decontaminate the “T” handle between sample locations. Using the EnCore sampler eliminates the need for field preservation and the shipping restrictions associated with preservatives. A complete set of instructions is included with each EnCore sampler. Tetra Tech, Inc. – Environmental SOP No. 007 Page 8 of 20 Title: Soil Sampling Revision No. 3, February 2017 Last Reviewed: March 2019 After the EnCore samples are collected, they should be placed on ice immediately and delivered to the laboratory within 48 hours. The samples must be preserved by the laboratory within 48 hours after they are collected. Terra Core Sampler New sampling collection equipment such as Terra Core have been developed to compete with EnCore when samples are collected for VOC analysis. Depending on the laboratory conducting the analysis, one of these two common VOC sampling devices may be used. In the case that Terra Core samplers are provided, collect the soil sample in the following manner. Each Terra Core sampling kit comes with one Terra Core sampler that collects either a 5- or a 10-gram aliquot into multiple containers: one methanol-preserved 40 mL VOA vial for high-level analysis, two 40- mL VOA vials containing stir bars for undiluted/low-level analysis, and one 60-gram sample jar for percent moisture analysis. To collect a sample, with the plunger seated in the handle, push the sampler into freshly exposed soil until the sample chamber is filled. Wipe any excess soil and debris from the exterior of the sampler and remove any soil that extends beyond the mouth of the sampler. Then, rotate the plunger that was seated in the handler top 90 degrees until it aligns with the slots in the body. Place the mouth of the sampler into the desired 40 mL VOA vial and extrude the sample by pushing the plunger down. Quickly place the lid back on the VOA vial. After all vials provided have been filled, the sampler is now contaminated and must be disposed of unless additional, bulk sampling will be conducted. After the Terra Core samples are collected, they should be placed on ice immediately and delivered to the laboratory within 48 hours. The samples must be preserved by the laboratory within 48 hours after they are collected. Because the vials are pre-weighed, no additional labels should be added. Sampling information should be written directly on the label already on the vial. 2.1.1.2 Soil Samples to be Preserved in the Field Soil samples preserved in the field may be prepared for analysis using both the low-level (sodium bisulfate preservation) and the high- to medium-level (methanol preservation) methods. If samples effervesce when they are placed in preservative, it is necessary to collect a sample unpreserved, in deionized water. In Tetra Tech, Inc. – Environmental SOP No. 007 Page 9 of 20 Title: Soil Sampling Revision No. 3, February 2017 Last Reviewed: March 2019 addition, an unpreserved sample for determination of moisture content must also be collected when soil samples to be preserved in the field are collected. Methanol Preservation (High to Medium Level). Bottles may be pre-spiked with methanol in the laboratory or prepared in the field. Use 40- to 60-mL glass vials with septum-lined lids for soil samples to be preserved in the field with methanol. Fill each sample bottle with 25 mL of demonstrated analyte- free purge-and-trap grade 3 methanol. The preferred method for adding methanol to the sample bottle is by removing the lid and using a pipette or scaled syringe to add the methanol directly to the bottle. Use a decontaminated (or disposable), small-diameter coring device such as a disposable VOA plunger to collect the soil. The outside diameter of the coring device must be smaller than the inside of the sample bottle neck. To collect the sample, pull the plunger back to the required location, insert it into the soil to be sampled, push the coring device into the soil, extrude the soil sample into the methanol- preserved sample bottle, and cap the bottle tightly. Swirl the sample (do not shake) in the methanol to break up the soil such that all of the soil is covered with methanol. After the samples are collected, place them on ice immediately and deliver to the laboratory within 48 hours. Sodium Bisulfate Preservation (Low Level). Bottles may be prepared in the laboratory or in the field with sodium bisulfate solution. Samples to be preserved in the field using sodium bisulfate are collected using the same procedures described for methanol preservation. 2.1.2 Procedure for Collecting Soil Samples for Non-VOC Analysis Samples collected for non-VOC analysis may be either grab or composite samples as follows. When collecting a grab sample, transfer a portion of soil to be analyzed to a stainless-steel or Teflon bowl, disposable inert plastic tray, or plastic bag. Avoid or remove vegetation and small stones. When a composite sample is collected, collect four to five discrete soil samples of roughly equal volume, based on the sample design in the QAPP. Remove roots, vegetation, sticks, and stones larger than the size of pea gravel (about 1/4- to 1/2-inch diameter). Thoroughly mix the soil with a stainless-steel spoon to obtain as uniform a texture and color as practicable. Transfer the mixed soil to the appropriate sample containers and close the containers. Label the sample containers and immediately place on ice. Tetra Tech, Inc. – Environmental SOP No. 007 Page 10 of 20 Title: Soil Sampling Revision No. 3, February 2017 Last Reviewed: March 2019 2.2 TEST PIT AND TRENCH SOIL SAMPLING Test pit and trench soil samples are collected when a complete soil profile is required or as a means of locating visually detectable contamination. This type of sampling provides a detailed description of the soil profile and allows for multiple samples to be collected from specific soil horizons. The sampling team should ensure that the sampling area is clear of utility lines, subsurface pipes, and poles before any test pit or trench is excavated with a backhoe. A test pit or trench is excavated by incrementally removing soil with a backhoe bucket. The excavated soil is placed on plastic sheeting well away from the edge of the test pit. A test pit should not be excavated to depths greater than 4 feet unless its walls are properly sloped or stabilized. No personnel may enter any test pit or trench excavation more than 4 feet deep; such action would constitute confined space entry and must conform with Occupational Safety and Health Administration (OSHA) regulations at Title 29 of the Code ofFederal Regulations § 1910. Personnel entering the test pit may be exposed to toxic or explosive gases and oxygen deficient environments. Air monitoring is required before they may enter the test pit, and use of appropriate respiratory gear and protective clothing is mandatory. At least two persons must be present at the test pit before sampling personnel may enter the excavation and begin soil sampling. Refer to project-specific health and safety plans for required safety procedures for excavations. Soil samples can also be obtained directly from the backhoe bucket or from the excavated material after it has been removed and deposited on plastic sheeting. The sampling personnel may direct the backhoe excavator to obtain material from the selected depth and location within the excavation. The backhoe operator will set the backhoe bucket on the ground in a designated location, at a sufficient distance from the excavation to allow the sampler safe access to the bucket. The backhoe operator must disengage the controls and signal to the sampler that it is safe to approach the bucket. Collect the soil sample from the center of the backhoe bucket to reduce the potential for cross-contamination of the sample. Test pits are not practical for sampling at depths greater than 15 feet. If soil samples are required from depths greater than 15 feet, samples should be obtained using test borings instead of test pits. Test pits are Tetra Tech, Inc. – Environmental SOP No. 007 Page 11 of 20 Title: Soil Sampling Revision No. 3, February 2017 Last Reviewed: March 2019 also usually limited to a few feet below the water table. In some cases, a pumping system may be required to control the water level within the pits. Access to open test pits should be restricted by flagging, tape, or fencing. If a fence is used, it should be erected at least 6 feet from the perimeter of the test pit. The test pit should be backfilled as soon as possible after sampling is completed. Various equipment may be used to collect soil samples from the walls or bottom of a test pit. A hand auger, bucket auger, or core sampler can be used to obtain samples from various depths. A trier, trowel, EnCore sampler, Terra Core sampler, VOA plunger, or spoon can be used to obtain samples from the walls or pit bottom surface. 2.3 SURFACE SOIL SAMPLING Surface soil samples can be used to investigate contaminants that exist in the near-surface environment. Contaminants detected in the near-surface environment may extend to considerable depths, potentially migrating to groundwater, surface water, the atmosphere, or biological systems. Sampling depths for surface soil are typically those that can be reached without use of a drill rig, DPT, or other mechanized equipment. Sample depths typically extend up to 1 foot below ground surface (bgs). However, the definition of “surface soil” and the resultant sample depths may vary based on risk assessment or other project requirements. Be aware of these site-specific constraints and follow the requirements of the QAPP to select the depths for surface soil samples. 2.3.1 Surface Soil Sampling Equipment The surface soil sampling equipment presented in this SOP is best suited for sampling to depths of 0 to 6 feet bgs. The sample depth, analytical suite, soil type, and soil moisture will also dictate the most suitable sampling equipment. The sampling locations should be cleared of any surface debris such as twigs, rocks, and litter before samples are collected. The following table presents various surface soil sampling equipment and their effective depth ranges, operating means (manual or power), and sample types collected (disturbed or undisturbed). Tetra Tech, Inc. – Environmental SOP No. 007 Page 12 of 20 Title: Soil Sampling Revision No. 3, February 2017 Last Reviewed: March 2019 Sampling Equipment Effective Depth Range (feet below ground surface) Operating Means Sample TypeHand Auger 0 to 6 Manual Disturbed Bucket Auger 0 to 4 Power Disturbed Core Sampler 0 to 4 Manual or Power Undisturbed EnCore or Terra Core Sampler Not Applicable Manual Disturbed Spoon/Spatula 0 to 0.5 Manual Disturbed Trowel 0 to 1 Manual Disturbed Volatile Organic Analysis (VOA) Plunger Not Applicable Manual Disturbed The procedures for using these various types of sampling equipment are discussed below. 2.3.1.1 Hand Auger A hand auger equipped with extensions and a “T” handle is used to obtain samples from depths of up to 6 feet bgs. It is possible to hand auger deeper than 6 feet. However, hand-augering below this depth is uncommon because of the time, effort, and cost effectiveness when sampling to depths greater than 6 feet bgs. If necessary, a shovel may be used to excavate the topsoil to reach the desired subsoil level. If topsoil is removed, its thickness should be recorded. Samples obtained using a hand auger are disturbed in their collection; establishing the exact depth where samples are obtained is difficult. The hand auger is screwed into the soil at an angle of 45 to 90 degrees from horizontal. When the entire auger blade has penetrated the soil, the auger is removed from the soil by lifting it straight up without turning it, if possible. If the desired sampling depth has not been reached, the soil is removed from the auger and deposited onto plastic sheeting. This procedure is repeated until the desired depth is reached and the soil sample is obtained. The auger is then removed from the boring and the soil sample is collected directly from the auger into an appropriate sample container. Tetra Tech, Inc. – Environmental SOP No. 007 Page 13 of 20 Title: Soil Sampling Revision No. 3, February 2017 Last Reviewed: March 2019 2.3.1.2 Bucket Auger A bucket auger, similar to the hand auger, is used to obtain disturbed samples from depths of up to 4 feet bgs. A bucket auger should be used when stony or dense soil is sampled that prohibits the use of a hand-operated core or screw auger. A bucket auger with closed blades is used in soil that cannot generally be penetrated or retrieved by a core sampler. The bucket auger is rotated while downward pressure is exerted until the bucket is full. The bucket is then removed from the boring, the soil collected is placed on plastic sheeting, and this procedure is repeated until the appropriate depth is reached and a sample is obtained. The bucket is then removed from the boring and the soil sample is transferred from the bucket to an appropriate sample container. 2.3.1.3 Core Sampler A hand-operated core sampler (Figure 1), similar to the hand auger, is used to obtain samples from depths of up to 4 feet bgs in uncompacted soil. The core sampler is capable of retrieving undisturbed soil samples and is appropriate when low concentrations of metals or organics are of concern. The core sampler should be constructed of stainless steel. A polypropylene core sampler is generally not suitable for sampling dense soils or sampling at greater depths. The core sampler is pressed or driven (for example, using a slide hammer) into the soil at an angle of 45 to 90 degrees from horizontal and is rotated when the desired depth is reached. The core is then removed, and the sample is placed into an appropriate sample container. 2.3.1.4 Shovel A shovel or spade may be used to obtain large quantities of soil that are not readily obtained with a trowel. A shovel is used when soil samples from depths of up to 6 feet bgs are to be collected by hand excavation; a tiling spade (sharpshooter) is recommended for excavation and sampling. A standard steel shovel may be used for excavation; either a stainless-steel or polypropylene shovel may be used for sampling. Soil excavated from above the desired sampling depth should be stockpiled on plastic sheeting. Soil samples should be collected from the shovel and placed into the sample container using a stainless-steel scoop, plastic spoon, or other appropriate tool. Tetra Tech, Inc. – Environmental SOP No. 007 Page 14 of 20 Title: Soil Sampling Revision No. 3, February 2017 Last Reviewed: March 2019 2.3.1.5 Trier A trier (Figure 2) is used to sample soil from depths up to 1 foot bgs. A trier should be made of stainless steel or polypropylene. A chrome-plated steel trier may be suitable when samples are to be analyzed for organics and heavy metal content is not a concern. Samples are obtained by inserting the trier into soil at an angle of up to 45 degrees from horizontal. The trier is rotated to cut a core and is then pulled from the soil being sampled. The sample is then transferred to an appropriate sample container. 2.3.1.6 Trowel A trowel is used to obtain surface soil samples that do not require excavation beyond a depth of 1 foot. A trowel may also be used to collect soil subsamples from profiles exposed in test pits. Use of a trowel is practical when sample volumes of approximately 1 pint (0.5 liter) or less are to be obtained. Excess soil should be placed on plastic sheeting until sampling is completed. A trowel should be made of stainless or galvanized steel. It can be purchased from a hardware or garden store. Soil samples to be analyzed for organics should be collected using a stainless-steel trowel. Samples may be placed directly from the trowel into sample containers. 2.4 SUBSURFACE SOIL SAMPLING Subsurface soil sampling is accomplished in conjunction with borehole drilling for depths greater than approximately 6 feet bgs. Subsurface soil sampling is frequently coupled with exploratory boreholes or monitoring well installation. As described above for surface soil, the definition of “subsurface soil” may vary based on risk assessment or other project requirements. Be aware of site-specific constraints and follow the requirements of the QAPP to select the depths for subsurface soil samples. 2.4.1 Subsurface Soil Sampling Equipment and Methods Subsurface soil may be sampled using a drilling rig, power auger, or DPT. Selection of sampling equipment depends on geologic conditions and the scope of the sampling program. Two types of samplers Tetra Tech, Inc. – Environmental SOP No. 007 Page 15 of 20 Title: Soil Sampling Revision No. 3, February 2017 Last Reviewed: March 2019 used with machine-driven augers — the split-spoon sampler and the thin-wall tube sampler — are discussed below. All sampling tools should be cleaned before and after each use in accordance with SOP 026, General Equipment Decontamination. Both the split-spoon sampler and the thin-wall tube sampler can be used to collect undisturbed samples from unconsolidated soils. The procedures for DPT sampling are also presented below. 2.4.1.1 Split-Spoon Sampler Split-spoon samplers are available in a variety of types and sizes. Site conditions and project needs, such as large sample volume for multiple analyses, dictate the specific type of split-spoon sampler to be used. Figure 3 shows a generic split-spoon sampler. The split-spoon sampler is advanced into the undisturbed soil beneath the bottom of the casing or borehole using a weighted hammer and a drill rod. The relationship between hammer weight, hammer drop, and number of blows required to advance the split-spoon sampler in 6-inch increments indicates the density or consistency of the subsurface soil. After the split-spoon sampler has been driven to its intended depth, it should be removed carefully to avoid loss of sample material. A catcher or basket should be used to help retain the sample in non-cohesive or saturated soil. After the split-spoon sampler is removed from the casing, it is detached from the drill rod and opened. If VOA samples are to be collected, EnCore samplers, Terra Core samplers, or VOA plungers should be filled with soil taken directly from the split-spoon sampler. Samples for other specific chemical analyses should be taken as soon as the VOA sample has been collected. The remainder of the soil recovered can then be used for visual classification of the sample and containerized for physical analysis. The entire sample (except for the top several inches of possibly disturbed material) is retained for analysis or disposal. 2.4.1.2 Thin-Wall Tube Sampler A thin-wall tube sampler, sometimes called the Shelby tube (Figure 4), is used to collect soil samples for geophysical analysis. Tube samplers are best suited for collecting cohesive soils such as clays and silts. The tube sampler may be pressed or driven into soil inside a hollow-stem auger flight, wash bore casing, or uncased borehole. The tube sampler is pressed into the soil, without rotation, to the desired depth or until Tetra Tech, Inc. – Environmental SOP No. 007 Page 16 of 20 Title: Soil Sampling Revision No. 3, February 2017 Last Reviewed: March 2019 it meets refusal. If the tube cannot be advanced by pushing, it may be necessary to drive it into the soil without rotation using a hammer and drill rod. The tube sampler is then rotated to collect the sample from the soil and removed from the borehole. After the tube sampler is removed from the drilling equipment, the tube sampler should be inspected for adequate sample recovery. The sampling procedure should be repeated until an adequate soil core is obtained (if the tube sampler can retain the sample material). The soil core obtained should be documented in the logbook. Any disturbed soil is removed from each end of the tube sampler. If chemical analysis is required, VOA samples must be collected immediately after the tube sampler is withdrawn. EnCore samplers, Terra Core samplers, or VOA plungers should be filled with soil taken directly from the tube sampler. Before use, and during storage and transport, the tube sampler should be capped with a non- reactive material. The tube is sealed using plastic caps for physical sampling parameters. The top and bottom of the tube sampler should be labeled and the tube sampler should be stored accordingly. 2.4.1.3 Direct-Push Technology Methods In many cases, DPT is less expensive and faster than collecting soil samples with a standard drilling rig. In addition, the use of DPT causes minimal disturbance to the ground surface and generates little to no soil cuttings. DPT drill rigs, as well as traditional drill rigs, often use acetate or clear polyvinyl chloride sleeves or brass liners inside of split-spoon or thin-wall tube samplers for collecting soil samples. The sample sleeve is extruded from the sampling rod when the sampling rod is retrieved from the ground. The sleeve is sliced lengthwise twice to open the sleeve. Soil samples can be collected directly from the opened sleeve. EnCore samplers, Terra Core samplers, or VOA plungers should be filled with soil taken directly from the opened DPT sampler if VOA samples are to be collected. Samples for other specific chemical analysis should be collected after the VOA sample. The remainder of the recovered soil can then be used for visual classification of the sample and containerized for physical analysis. The entire sample is retained for analysis or disposal. Tetra Tech, Inc. – Environmental SOP No. 007 Page 17 of 20 Title: Soil Sampling Revision No. 3, February 2017 Last Reviewed: March 2019 FIGURE 1 HAND-OPERATED CORE SAMPLER Tetra Tech, Inc. – Environmental SOP No. 007 Page 18 of 20 Title: Soil Sampling Revision No. 3, February 2017 Last Reviewed: March 2019 FIGURE 2 TRIER Tetra Tech, Inc. – Environmental SOP No. 007 Page 19 of 20 Title: Soil Sampling Revision No. 3, February 2017 Last Reviewed: March 2019 FIGURE 3 GENERIC SPLIT-SPOON SAMPLER Tetra Tech, Inc. – Environmental SOP No. 007 Page 20 of 20 Title: Soil Sampling Revision No. 3, February 2017 Last Reviewed: March 2019 FIGURE 4 THIN-WALL TUBE SAMPLER Tetra Tech, Inc. - Environmental SOP No. 009 Page 1 of 7 Title: Bulk Materials Sampling Revision No. 4, May 2021 Last Reviewed: May 2021 1.0 BACKGROUND Bulk materials are typically sampled to characterize a homogeneous collection of a single, identifiable product. 1.1 PURPOSE This standard operating procedure (SOP) establishes the requirements and procedures for sampling bulk materials. 1.2 SCOPE This SOP applies to field sampling of bulk materials with a scoop, trier, or grain thief. It provides detailed procedures for gathering such samples with specific sampling equipment. 1.3 DEFINITIONS Photoionization Detector (MiniRae Lite®, MiniRae 3000 or equivalent): A direct-reading air monitoring instrument used to measure the level of organic vapors in air. Grain Thief: A sampling device made of two slotted, concentric, telescoping tubes designed to penetrate solid material. Trier: A sampling device consisting of a long tube cut in half lengthwise with a sharpened tip that allows the sampler to cut into sticky solids and to loosen cohesive soil. 1.4 REFERENCES deVera, E.R., and others. 1980. “Samplers and Sampling Procedures for Hazardous Waste Streams.” EPA-600/2-80-018. January. Tetra Tech, Inc. - Environmental SOP No. 009 Page 2 of 7 Title: Bulk Materials Sampling Revision No. 4, May 2021 Last Reviewed: May 2021 Horwitz, W., and others. 1979. “Animal Feed: Sampling Procedure.” Official Methods of Analysis. The Association of Official Analytical Chemists. 12th Edition. Washington, DC. U.S. Environmental Protection Agency. 1984. “Characterization of Hazardous Waste Sites—A Methods Manual: Volume II. Available Sampling Methods.” Second Edition. EPA-600/4-84- 076. December. 1.5 REQUIREMENTS AND RESOURCES Sampling of bulk materials can be performed by a variety of equipment. The selection of sampling equipment and procedures should be based on site-specific conditions such as the type and volume of material to be sampled. The selected sampling equipment should be constructed of inert materials that will not react with the material being sampled. The following equipment may be required to sample bulk materials: • Trier • Scoop • Trowel • Grain thief • Spoons or spatulas • OVA® or HNu® • Decontamination materials • Sample containers and labels • Chain-of-custody and shipping materials • Field logbook • Stainless-steel or Teflon® tray Additional resources for sampling bulk materials are discussed in The Sampling of Bulk Materials by R. Smith and G. V. James of the Royal Society of Chemistry, London (1981). Although this book does not deal specifically with hazardous waste sampling, the concepts discussed are applicable, especially those regarding establishment of a sampling scheme. Also refer to the Soil Sampling SOP (SOP No. 007). Tetra Tech, Inc. - Environmental SOP No. 009 Page 3 of 7 Title: Bulk Materials Sampling Revision No. 4, May 2021 Last Reviewed: May 2021 2.0 PROCEDURES Bulk materials are usually contained in bags, drums, or hoppers, although large amounts of material may be piled on the ground, either deliberately or as the result of a spill. Material surfaces exposed to the atmosphere may undergo chemical alteration or degradation and should be removed before initiating sample collection. Because the process conditions that produced the bulk material may have varied over time, a series of samples should be collected and composited into one sample to represent the material. Samples collected for volatile organic compound analysis should not be composited. The following sections provide detailed procedures for sampling bulk materials with a trier, scoop, or trowel, and with a grain thief. 2.1 SAMPLING BULK MATERIALS WITH A TRIER, SCOOP, OR TROWEL A typical trier (Figure 1) is a long tube with a slot that extends almost its entire length. The tip and edges of the tube slot are sharpened to allow the trier to cut a core after being inserted into the material. A trier is most useful when sampling moist or sticky solids and powdered or granular material with a particle diameter less than half the diameter of the trier. Sampling triers are usually made of stainless steel and have wooden handles. Triers are 24 to 40 inches long and 0.5 to 1.0 inch in diameter. They can be purchased from laboratory supply companies. A scoop or trowel may be used for sampling bulk materials as well as dry, granular, or powdered material in bins or other shallow containers. A scoop is preferred over a trowel because the scoop is usually made of materials less subject to corrosion and chemical reactions. A trowel is shaped like a small shovel; the blade is usually 3 to 5 inches long and has a sharp tip. A scoop is similar to a trowel, but the blade is usually more curved and has a closed upper end to contain the sampled material. Scoops are available in different sizes and shapes; stainless-steel and polypropylene scoops with blades 3 to 6 inches long are recommended. Trowels can be purchased from hardware stores; scoops are generally available from laboratory supply companies. Tetra Tech, Inc. - Environmental SOP No. 009 Page 4 of 7 Title: Bulk Materials Sampling Revision No. 4, May 2021 Last Reviewed: May 2021 The following procedure can be used to sample bulk materials with a trier, scoop, or trowel: 1. Place all sampling equipment on plastic sheeting next to the sampling location. Sample containers should be selected in accordance with the requirements in SOP No. 027, Sample Collection Container Requirements. 2. Wear appropriate protective clothing and gear. Use an HNu® or OVA® to monitor for levels of volatile organic vapors that may be present in accordance with SOP No. 025, Organic Vapor Air Monitoring. 3. Affix a completed sample container label to the appropriate sample container. 4. Insert a clean trier, scoop, or trowel (implement) into the material at a 0 to 45 degree angle from horizontal. This orientation minimizes sample spillage. 5. If the material is cohesive, rotate the implement once or twice to cut a core of material. 6. Slowly withdraw the implement, making sure the slot or blade is facing upward. 7. If grab sampling is required, soil from a grab sample location that will be subsampled into multiple containers should be combined in a stainless steel or Teflon bowl, tray, or plastic bag to homogenize. 8. If composite sampling is required, repeat steps 4 through 6 at different points two or more times. Combine the samples in a stainless steel or Teflon bowl, tray, or plastic bag to homogenize. 9. To homogenize grab and composite samples, thoroughly mix the soil placed in the stainless steel or Teflon bowl or tray with a stainless-steel spoon or soil placed in a sealed plastic bag by hand to obtain as uniform a texture and color as practicable. 10. Transfer the sample into the labeled container using a gloved hand, stainless-steel or plastic spoon, spatula, or similar tool. 11. Ensure that a Teflon® liner is present in the cap of the sample container cap, if required. Secure the cap tightly on the sample container. 12. Complete all chain-of-custody documents, field logbook entries, and packaging requirements. 13. Decontaminate all non-disposable sampling implements after each use and between sampling locations using the procedures in SOP No. 026, General Equipment Decontamination. Tetra Tech, Inc. - Environmental SOP No. 009 Page 5 of 7 Title: Bulk Materials Sampling Revision No. 4, May 2021 Last Reviewed: May 2021 2.2 SAMPLING BULK MATERIALS WITH A GRAIN THIEF A grain thief is used for sampling powdered or granular materials in bags, fiber drums, sacks, or similar containers. This sampler is useful when the material contains particles no greater than 0.25 inch in diameter. A grain thief (Figure 2) consists of two slotted, concentric, telescoping tubes, usually made of brass or stainless steel. The outer tube has a conical, pointed tip on one end that permits the sampler to penetrate the material being sampled. The sampler is about 24 to 40 inches long and 0.5 to 1 inch in diameter. Grain thieves are commercially available from laboratory supply companies. The following procedure can be used to sample bulk materials with a thief: 1. Place all sampling equipment on plastic sheeting next to the sampling location. Sample containers should be selected in accordance with the requirements in SOP No. 027, Sample Collection Container Requirements. 2. Wear appropriate protective clothing and gear. Use an HNu® or OVA® to monitor for levels of volatile organic vapors that may be present in accordance with SOP No. 025, Organic Vapor Air Monitoring. 3. Affix a completed sample container label to an appropriate sample container. 4. Insert a clean grain thief in the closed position into the material. Insert it from a point near the top edge or corner of the material, through the center, and to a point opposite the point of entry. 5. Rotate the inner tube of the grain thief into the open position. Wiggle the thief a few times to allow the material being sampled to enter the open slots. Close the grain thief and withdraw it from the material. 6. Place the grain thief in a horizontal position with the slots facing upward. Rotate the outer tube and slide it away from the inner tube. 7. If grab sampling is required, soil from a grab sample location that will be subsampled into multiple containers should be combined in a stainless steel or Teflon bowl, tray, or plastic bag to homogenize. 8. If composite sampling is required, repeat steps 4 through 6 at different points two or more times. Combine the samples in a stainless steel or Teflon bowl, tray, or plastic bag to homogenize. Tetra Tech, Inc. - Environmental SOP No. 009 Page 6 of 7 Title: Bulk Materials Sampling Revision No. 4, May 2021 Last Reviewed: May 2021 9. To homogenize grab and composite samples, thoroughly mix the soil placed in the stainless steel or Teflon bowl or tray with a stainless-steel spoon or soil placed in a sealed plastic bag by hand to obtain as uniform a texture and color as practicable. 10. Transfer the sample into the labeled container using a gloved hand, stainless-steel or plastic spoon, spatula, or similar tool. 9. Ensure that a Teflon® liner is present in the cap of the sample container, if required. Secure the cap tightly on the sample container. 10. Complete all chain-of-custody documents, field logbook entries, and packaging requirements. 11. Decontaminate all non-disposable sampling equipment after each use and between sampling locations using the procedures in SOP No. 026, General Equipment Decontamination. FIGURE 1 TRIER Tetra Tech, Inc. - Environmental SOP No. 009 Page 7 of 7 Title: Bulk Materials Sampling Revision No. 4, May 2021 Last Reviewed: May 2021 FIGURE 2 GRAIN THIEF TETRA TECH, INC. Standard Operating Procedure No. 010 Revision Date: 10/25/2022 Created by: Anthony Camacho Project name: Recycled Earth Page 1 of 8 Surface water sampling 1. PURPOSE The purpose of this procedure is to obtain representative water samples. Site-specific surface water sampling requirements, if necessary, will be described in work plans or field sampling plans. 2. PROCEDURE 2.1 FIELD PREPARATION Notify client, property owner prior to sampling date in case there is any requirement to reach property. 2.1.1 Forms Gather proper field forms necessary for field sampling such as: Water Level Data Sheet Daily Report Sheets Chain of Custodies Water Quality Data Sheet Field Service Request Tailgate Health and Safety 2.1.2 Equipment Gather necessary equipment required for sampling: Laboratory provided containers and labels Laboratory-cleaned cooler Electronic water level indicator waders/rubber boots Interface probe (if free-product is expected at the site) TETRA TECH, INC. Standard Operating Procedure Revision Date: 10/25/2022 Created by: Anthony Camacho Project name: Recycled Earth Page 2 of 8 Calculator Latex or nitrile gloves Knife, or scissors Garbage bags Two graduated 5-gallon pails to collect purge water pH, temperature, and specific conductivity meter Decontamination equipment including: Deionized or distilled water Alconox graduated cylinders paper towel One of: surface water sampling device (e.g., Niskin bottle or stainless steel beaker) If needed: DOT-approved sealed drums for storage of purged well water, or a suitable location to disperse of liquid (i.e., on-site treatment system) Quantab TM and HachTM Titration kits Boat with appropriate motor (gas or electric) 2.1.3 Documents Any field documents that will help with sampling: Well Construction Log Well location map/site map Work Plan TETRA TECH, INC. Standard Operating Procedure Revision Date: 10/25/2022 Created by: Anthony Camacho Project name: Recycled Earth Page 3 of 8 Health and Safety Plan Signed site access agreement 2.1.4 Other Cellular phone Replacement locks Writing implements and an indelible marker Crushed ice Bubble wrap if required to protect samples during shipment to the laboratory First aid kit Personal comfort items Machete or other vegetation-clearing tool 2.2 FIELD ACTIVITIES 2.2.1 Sampling methods On arrival at the site, set up and organize sampling equipment near the first (farthest downstream) sampling location. Cut a section of plastic sheeting and place it on the ground as a clean staging area for sampling equipment. Arrange sample containers, sampling equipment, and decontaminated equipment on the plastic sheet. Be careful not to step on or otherwise contaminate this clean working surface. Don PPE in accordance with the site Health and Safety Plan (HSP). Collect surface water samples as described below. Note: Collection of surface water samples in deep water areas may require the use of a boat. The Health and Safety Manager shall be consulted for additional health and safety requirements for this exercise. TETRA TECH, INC. Standard Operating Procedure Revision Date: 10/25/2022 Created by: Anthony Camacho Project name: Recycled Earth Page 4 of 8 2.2.2 Bottle Preparation Prior to sample collection, label all appropriate fields on the sample container labels with an indelible marker. Apply labels to appropriate containers. 2.2.3 Sample Collection 2.2.3.1 Direct Grab Method for Unpreserved Samples Samples from shallow depths can readily be collected by the direct grab method, i.e., submerging the sample container. This method can be performed when preservatives have not been added to sample containers prior to sampling. Use the following procedures for direct grab method sample collection: Label the sample bottle with appropriate label and cover with clear waterproof sealing tape. Record all applicable information in the field logbook and complete the chain-of custody form. Samples for VOC or EDB analysis shall be collected first. With minimum surface disturbance, submerge the unpreserved sample bottle with the mouth of the container facing upstream and allow sample stream to flow gently into the bottle. For VOC or EDB analysis, the container shall be completely filled without headspace present. In the event headspace is present, discard water in vial downstream from the sampling site and attempt this procedure a maximum of three times before substituting with a new vial. For other samples, fill the container approximately two-thirds full, leaving adequate space to allow for expansion. After sample collection is completed, submerge the YSI unit at the sampling site to take water quality measurements. 2.2.3.2 Sampling (or Transfer) Device Method for Preserved Samples TETRA TECH, INC. Standard Operating Procedure Revision Date: 10/25/2022 Created by: Anthony Camacho Project name: Recycled Earth Page 5 of 8 It is prudent to use the sampling or transfer device method when preservatives have been added to sample containers prior to sampling. This device may be disposable or constructed of a non-reactive material, such as glass, stainless steel, or Teflon, and it can be utilized in most sampling situations except where adhesion of a contaminant to the surface of the transfer container (oils and grease) may pose a problem. The sampling device shall have a capacity of at least 500 mL to minimize the number of times the liquid must be sampled, thus reducing possible disturbance to any sediment layers. Though not preferred, sampling for VOC or EDB analysis may be performed if the direct grab method is not applicable (sample container preserved). A carboy, dipper, beaker with pour spout and handle, ladle, ice scooper, pond sampler, or other container constructed of inert material, such as glass, stainless steel or Teflon can be used to transfer water from the sample source to a sample bottle. This prevents unnecessary contamination of the outer surface of the sample bottle that might otherwise result from direct immersion of the sample bottle in the water. Use of a sampling device also prevents the technician from having to physically contact the sample media. Depending upon the sampling application, the transfer vessel can be either disposed or reused. If reused, the vessel and any other apparatus that could come into contact with sample will be thoroughly decontaminated. Decontamination, prior to sampling a different source. Use the following procedures for transfer device method sample collection: Label the sample bottle with an appropriate label and cover with clear waterproof sealing tape. Record all applicable information in the field logbook and complete the chain-of custody form. Samples for VOC then EDB analysis shall be collected first. If a carboy is used to collect large quantities of surface water, the carboy shall be filled to 1/10 capacity and rinsed three times with the water to be sampled, prior to sample collection. Rinse water shall be discarded downstream or away from the sampling location. The mouth of the carboy shall be facing upstream during sampling. Downstream samples shall be collected prior to upstream samples. TETRA TECH, INC. Standard Operating Procedure Revision Date: 10/25/2022 Created by: Anthony Camacho Project name: Recycled Earth Page 6 of 8 Care shall be taken not to disturb bottom sediments. If a pond sampler will be used, ensure that the sampling beaker and the bolts and nuts that secure the clamp to the pole are tightened properly. With minimal surface disturbance, submerge a pre-cleaned stainless steel dipper or similar device. The mouth of the container shall be facing upstream. The sampler, if wading, shall remain downstream of the sample collection point. In addition, downstream samples shall be collected prior to upstream samples. Care shall be taken not to disturb bottom sediments. Allow the device to fill slowly and continuously. If disturbed, wait until the sediment settles. To collect an at-depth sample, the Niskin bottle sampler shall be locked in an open position and slowly lowered through the water column to the required depth; the weighted messenger is then sent down to close the sampler. Samples for VOC and EDB analysis shall be collected immediately after filling the sampling device to ensure the integrity of the sample where possible aeration could occur. Remove the cap from the sample bottle and slightly tilt the mouth of the bottle below the device. Empty the device slowly, allowing the sample stream to flow gently into the bottle with minimal disturbance. For samples to be analyzed for VOCs or EDB, the container shall be completely filled with no headspace present. For other samples, fill the container approximately two thirds full, leaving adequate space to allow for expansion. Take water quality measurements. Properly discard or decontaminate the sampling devices. 2.2.3.2 Passive Surface Water Sampler Sampling close to the bottom of a pond or lake is difficult and becomes more difficult as depths increase. The Passive Water Sampler was designed to reach these increased depths with as little mixing of the sample water as possible. The device is constructed of a PVC casing, which can be elongated by adding 4-foot to 6-foot sections until the desired length is reached. Teflon tubing is placed inside the PVC for each individual sampling port (.25 ft., .50 ft., 1.0 ft., 2.0 ft., TETRA TECH, INC. Standard Operating Procedure Revision Date: 10/25/2022 Created by: Anthony Camacho Project name: Recycled Earth Page 7 of 8 3.0 ft. and 4.0 ft.). Peristaltic tubing is cut to a length adequate enough to reach the surface of the water and allow the peristaltic pump to operate freely. Be sure to mark the tubing before deploying the sampler; this way the sampler will know which tube leads to which sampling port depth. From the Teflon tubing, run lengths of peristaltic tubing to the peristaltic pump and begin the initial purge. Label the sample bottle with an appropriate label and cover with clear waterproof sealing tape. Record all applicable information in the field logbook and complete the chain-of custody form. Samples for VOC then EDB analysis shall be collected first. To collect a sample using the Passive Surface Water Sampler, the sampling device shall be constructed for the necessary depth and the tubing marked for the correct sampling port. Enough peristaltic tubing shall be left for the pump to operate freely. Retrieve the dipper from the surface water with minimal disturbance. For samples to be analyzed for VOCs or EDB, the container shall be completely filled with no headspace present. For other samples, fill the container approximately two thirds full, leaving adequate space to allow for expansion. Take water quality measurements. Properly decontaminate the sampling device. 2.2.4 Sample Preservation Tighten lids of sample containers and place in coolers Wrap all glass containers in bubble wrap or foam; then place into large 1-2 gallon zip-lock bags, label the outside of the bag, and place into the coolers. Completely fill out the Chain-of-Custody. When shipping samples, seal Chain-of-Custody in a watertight zip-lock bag and attach to the underside of the cooler lid with packaging tape. Ship coolers or arrange delivery to the laboratory as soon as possible and before the sample “hold- time” expires. TETRA TECH, INC. Standard Operating Procedure Revision Date: 10/25/2022 Created by: Anthony Camacho Project name: Recycled Earth Page 8 of 8 2.2.5 Decontamination Decontaminate electronic water level indicator, pH, temperature, and specific conductivity meter between sampling points. A DI rinse of the sampling equipment is an appropriate decon procedure for use between samples collected from the same surface water ecosystem. It is not necessary to decon the YSI meter when sampling downstream to upstream in the same surface water ecosystem. 3. QUALITY ASSURANCE Avoid cross-contamination of sampling equipment by conducting proper decontamination procedures described above. Take care in labeling the samples, and the corresponding Chain- of-Custody with the correct sample date, time and well identification. All labeling must be consistent between samples and the Chain of Custody. Keep samples on ice following collection and be conscience of “hold-times” for the samples. It is imperative that samples are submitted to the laboratory prior to the exceedance of hold times. TETRA TECH, INC. Standard Operating Procedure No. 011 Revision Date: 10/24/2022 Created by: Anthony Camacho Project name: Recycled Earth Page 1 of 6 Groundwater S ampling 1. PURPOSE The purpose of this procedure is to obtain representative groundwater samples from groundwater monitoring wells or piezometers with a bailer, peristaltic, or submersible pump. Site-specific groundwater sampling requirements, if necessary, will be described in work plans or field sampling plans. 2. PROCEDURE 2.1 FIELD PREPARATION Notify client, property owner prior to sampling date in case there is any requirement to reach property. 2.1.1 Forms Gather proper field forms necessary for field sampling such as: Water Level Data Sheet Daily Report Sheets Chain of Custodies Water Quality Data Sheet Field Service Request Tailgate Health and Safety 2.1.2 Equipment Gather necessary equipment required for sampling: Laboratory provided containers and labels Laboratory-cleaned cooler Well keys TETRA TECH, INC. Standard Operating Procedure Revision Date: 10/24/2022 Created by: Anthony Camacho Project name: Recycled Earth Page 2 of 6 Electronic water level indicator Interface probe (if free-product is expected at the site) Calculator Latex or nitrile gloves Tools to access wells Knife, or scissors Garbage bags Two graduated 5-gallon pails to collect purge water pH, temperature, and specific conductivity meter Decontamination equipment including: Deionized or distilled water Alconox graduated cylinders paper towel One of: Disposable high-density polyethylene sampling bailers and bailer rope Peristaltic pump and sufficient disposable Silicon (approximately 10 inches per sample) and tubing (length measured from pump head to sampling depth) Submersible pump and tubing If needed: DOT-approved sealed drums for storage of purged well water, or a suitable location to disperse of liquid (i.e., on-site treatment system) Quantab TM and HachTM Titration kits TETRA TECH, INC. Standard Operating Procedure Revision Date: 10/24/2022 Created by: Anthony Camacho Project name: Recycled Earth Page 3 of 6 2.1.3 Documents Any field documents that will help with sampling: Well Construction Log Well location map/site map Work Plan Health and Safety Plan Signed site access agreement 2.1.4 Other Cellular phone Replacement locks Writing implements and an indelible marker Crushed ice Bubble wrap if required to protect samples during shipment to the laboratory First aid kit Personal comfort items Machete or other vegetation-clearing tool 2.2 FIELD ACTIVITIES 2.2.1 Well Purge Don a new pair of latex or nitrile gloves. First sample those wells with the lowest historical or suspected concentrations, then advance to the wells more likely to be contaminated. Set plastic sheeting or a garbage bag near the well to set sample bottles on and to rest sampling equipment. Obtain the water level measurement, noting any occurrence of LNAPL or DNAPL. Calculate three TETRA TECH, INC. Standard Operating Procedure Revision Date: 10/24/2022 Created by: Anthony Camacho Project name: Recycled Earth Page 4 of 6 or five times the volume of groundwater present in the well casing, as indicated on the Field Service Request Form. Purge the well using a dedicated HDPE disposable bailer and a new length of clean rope, a peristaltic pump with new Teflon and tubing, a submersible pump with new tubing. Purge the groundwater monitoring well of a minimum of 3 to 5 well casing volumes prior to collecting the samples. Measure the volume of purged water using a graduated pail, or other container of known volume. Purging and sampling should be conducted using slow and steady motions to avoid excessive agitation, increased sample turbidity, and sample volatilization. Empty purge water onto the ground, away from the well, or in the event containerizing is required, transfer purged water from the pail into the appropriate storage container for storage until disposal is arranged. NOTE: If well goes dry before 3 well volumes can be purged from the well, allow groundwater to recharge, then collect sample. 2.2.2 Field Measured Parameters After at least 3 well volumes have been purged from the well, measure temperature, pH, conductivity, and any other field parameters as specified in the Field Service Request Form. Once three measurements are obtained within 10-percent of each other, the groundwater quality may be considered representative of the groundwater as it exists in the formation. If well goes dry before 3 well volumes can be purged from the well, a single round of field parameter measurements will be obtained following recharge of a sufficient amount of groundwater to complete the sampling activities. 2.2.3 Bottle Preparation Prior to sample collection, label all appropriate fields on the sample container labels with an indelible marker. Apply labels to appropriate containers. TETRA TECH, INC. Standard Operating Procedure Revision Date: 10/24/2022 Created by: Anthony Camacho Project name: Recycled Earth Page 5 of 6 2.2.4 Sample Collection 2.2.4.1 Bailers Samples will be collected using the same HDPE disposable bailer used for purging. Transfer groundwater samples from the bailer to their appropriate sample bottle, minimizing turbulent flow between the bailer and the sample bottles. Place samples in the appropriate containers in decreasing order of volatility (e.g., purgeables and aromatics first, then PNAs and phenols, then cyanides, and lastly, nitrate, sulfate and metals). Samples for dissolved metals analysis may be field filtered. If there is insufficient sample volume to provide all sampling needs, retrieve additional bailer volumes until all samples are collected. 2.2.4.2 Peristaltic, submersible Samples for laboratory analysis of parameters, other than VOCs, will be collected directly from the pump tubing following purging of 3 to 5 well volumes, and stabilization of field parameter measurements. A 0.45 µm filter will be used to field filter samples for dissolved metals into a preserved laboratory container. 2.2.5 Sample Preservation Tighten lids of sample containers and place in coolers Wrap all glass containers in bubble wrap or foam; then place into large 1-2 gallon zip-lock bags, label the outside of the bag, and place into the coolers. Completely fill out the Chain-of-Custody. When shipping samples, seal Chain-of-Custody in a watertight zip-lock bag and attach to the underside of the cooler lid with packaging tape. Ship coolers or arrange delivery to the laboratory as soon as possible and before the sample “hold- time” expires. TETRA TECH, INC. Standard Operating Procedure Revision Date: 10/24/2022 Created by: Anthony Camacho Project name: Recycled Earth Page 6 of 6 2.2.6 Decontamination Decontaminate electronic water level indicator, pH, temperature, and specific conductivity meter between sampling points. If peristaltic pump is used, dispose used flow-through tubing and filters. If submersible pump is used, place pump in a graduated cylinder filled with a solution of Alconox and deionized or distilled water. Allowing the soap and water solution to re-circulate through the pump and tubing for a maximum of five minutes. Rinse cylinder and outside of pump and tubing with deionized or distilled water. Fill cylinder with deionized or distilled water and allow at least 4 liters to run though the pump and tubing and onto the ground away from the well. NOTE: During pump use and decontamination, take care to assure tubing and pump does not come in contact with the ground or other surfaces. Following sampling of the last well, remove and throw away submersible pump tubing prior to decontamination of the pump. Dispose of all gloves, bailers, rope/string, tubing, and filters used to collect the sample prior to accessing the next well. 3. QUALITY ASSURANCE Avoid cross-contamination of wells with the water level indicator, and sampling equipment by conducting proper decontamination procedures described above. Take care in labeling the samples, and the corresponding Chain-of-Custody with the correct sample date, time and well identification. All labeling must be consistent between samples and the Chain of Custody. Keep samples on ice following collection and be conscience of “hold-times” for the samples. It is imperative that samples are submitted to the laboratory prior to the exceedance of hold times. Tetra Tech, Inc. – Environmental SOP No. 012 Page 1 of 3 Title: Soil Descriptions Last Review: March 2019 1. PURPOSE The purpose of this procedure is to describe and classify soil samples in the field during soil boring advancement. 2. PROCEDURE 2.1 FIELD PREPARATION Call Miss Dig (1-800-482-7171 or 811) at least 72 hours in advance to arrange utility staking in any subsurface boring or exploration area. Notify client, property owner, and MDEQ if necessary. 2.1.1 Forms Soil Boring and Monitoring Well Logs Tailgate Health and Safety Field Service Request Daily Report Sheets 2.1.2 Equipment •Knife or spatula •Ruler, tape measure, or scale •Latex or nitrile gloves •Sand gauge and geotechnical gauge, if necessary 2.1.3 Documents Health and Safety Plan; Workplan; Maps Site, Access agreements 2.1.4 Other Cellular telephone; First aid kit Personal comfort items; Daily Field Forms or Logbook 2.2 FIELD ACTIVITIES Include the following information in the soil sample description: color (including mottling); moisture; density; major and minor soil types; content and grain sizes; and other additional descriptors including contaminant observations; bedding and lamination. Particle shape or angularity are also useful for coarse- grained materials. Record these descriptors in the following order: 1) color, 2) moisture content, 3) density, 4) composition and grain sizes, and 5) other descriptors. 1) Color: Use best judgment in describing soil color. Munsell color charts may be used on specific projects if required. Observed mottling should also be reported, as an “other” descriptor at the end of the description. Be sure to include corresponding quantity and contrast terms and specify the mottled colors. Mottling: Contrast Term Description Faint indistinct Distinct easily seen Prominent outstanding Tetra Tech, Inc. – Environmental SOP No. 012 Page 2 of 3 Title: Soil Descriptions Last Review: March 2019 2)Moisture content: Dry Little or no perceptible moisture Damp Some perceptible moisture, not compactable Moist Compactable Wet Above compactable range Saturated Pores, voids filled with water (note: compressed, structureless clay does not “saturate,” as filled micropores in clay soil will not drain with gravity due to capillarity/cohesion) 0) Density, based upon blow counts:Silt or Clay Blows per foot Thumb Penetration Very loose 0 - 4 Very soft 0 - 2 Very easily Loose 4 - 10 Soft 2 - 4 Easily Medium dense 10 - 30 Medium stiff 4 - 8 Moderate effort Dense 30 - 50 Stiff 8 - 15 Indented easily Very dense >50 Very stiff 15 - 30 Indented by nail Hard >30 Difficult by nail 3)Content and grain size (Unified Soil Classification System (USCS)): Tetra Tech, Inc. – Environmental SOP No. 012 Page 3 of 3 Title: Soil Descriptions Last Review: March 2019 5) Additional descriptors, such as Bedding and laminations Term Thickness (feet/meters) Very Thickly Bedded > 3.3’ (1 m) Thickly Bedded 1’- 3.3’ (30 - 100 cm) Medium Bedded 4” - 1’ (10 - 30 cm) Thinly Bedded 1” - 4” (3 - 10 cm) Very Thinly Bedded 0.4” - 1” (1 - 3 cm) Thickly Laminated 0.12” - 0.4” (0.1 - 1 cm) Thinly Laminated <0.12” (<0.3 cm) Descriptive terms: Lens Zone equal to or less than 1-inch (2.5 cm) in thickness Layer Zone greater than 1-inch (2.5 cm) in thickness Interbedded Alternating lenses and/or layers of different media types Pockets Inclusion of one media type in a matrix of another media type Examples of soil descriptions: Fine to coarse SAND, and medium to coarse GRAVEL Fine GRAVEL, some fine to coarse Sand, little Silt, trace Clay Medium to coarse SAND, trace fine Gravel, trace fine Sand Gray, wet, medium dense, fine to coarse SAND, some fine Gravel Brown with distinct gray mottling, moist, soft, interbedded SILT and CLAY, trace fine Sand, very thinly bedded. Notes: -Always use capital letters for primary constituents, or both primary constituents if you use “and”. The first letter of each subsequent component of soil content is capitalized. -Describe grain size small to large (ex. fine to coarse Gravel). -Within one percentage category, list in decreasing grain-size (ex. trace fine Gravel, trace fine Sand). Tetra Tech, Inc. – Environmental SOP No. 026 Page 1 of 8 Title: General Equipment Decontamination Revision No. 3, June 2009 Last Reviewed: March 2019 1.0 BACKGROUND All non-disposable field equipment must be decontaminated before and after each use at each sampling location to obtain representative samples and to reduce the possibility of cross-contamination. 1.1 PURPOSE This standard operating procedure (SOP) establishes the requirements and procedures for decontaminating equipment in the field. 1.2 SCOPE This SOP applies to decontaminating general non-disposable field equipment. To prevent contamination of samples, all sampling equipment must be thoroughly cleaned prior to each use. 1.3 DEFINITIONS Alconox: Non-phosphate soap, obtained in powder detergent form and dissolved in water Liquinox: Non- phosphate soap, obtained in liquid form for mixing with water 1.4 REFERENCES U.S. Environmental Protection Agency (EPA). 1992a. “Guide to Management of Investigation -Derived Wastes.” Office of Solid Waste and Emergency Response. Washington D.C. EPA 9345.3 -03FS. January. EPA. 1992b. “RCRA Ground-Water Monitoring: Draft Technical Guidance.” Office of Solid Waste. Washington, DC. EPA/530-R-93-001. November. EPA. 1994. “Sampling Equipment Decontamination.” Environmental Response Team SOP #2006 (Rev. #0.0, 08/11/94). http://www.ert.org/mainContent.asp?section=Products&subsection=List Tetra Tech, Inc. – Environmental SOP No. 026 Page 2 of 8 Title: General Equipment Decontamination Revision No. 3, June 2009 Last Reviewed: March 2019 1.5 REQUIREMENTS AND RESOURCES The equipment required to conduct decontamination is as follows: • Scrub brushes • Large wash tubs or buckets • Squirt bottles • Alconox or Liquinox • Tap water • Distilled water • Plastic sheeting • Aluminum foil • Methanol or hexane • Isopropanol (pesticide grade) • Dilute (0.1 N) nitric acid 2.0 PROCEDURE The procedures below discuss decontamination of personal protective equipment (PPE), drilling and monitoring well installation equipment, borehole soil sampling equipment, water level measurement equipment, general sampling equipment, and groundwater sampling equipment. 2.1 PERSONAL PROTECTIVE EQUIPMENT DECONTAMINATION Personnel working in the field are required to follow specific procedures for decontamination prior to leaving the work area so that contamination is not spread off site or to clean areas. All used disposable protective clothing, such as Tyvek coveralls, gloves, and booties, will be containerized for later disposal. Decontamination water will be containerized in 55-gallon drums (refer to Section 3.0). Personnel decontamination procedures will be as follows: 1. Select an area removed from sampling locations that is both downwind and downgradient. Decontamination must not cause cross-contamination between sampling points. 2. Maintain the same level of personal protection as was used for sampling. Tetra Tech, Inc. – Environmental SOP No. 026 Page 3 of 8 Title: General Equipment Decontamination Revision No. 3, June 2009 Last Reviewed: March 2019 3. Wash neoprene boots (or neoprene boots with disposable booties) with Liquinox or Alconox solution and rinse with clean water. Remove booties and retain boots for subsequent reuse. 4. Wash outer gloves in Liquinox or Alconox solution and rinse in clean water. Remove outer gloves and place into plastic bag for disposal. 5. Remove Tyvek or coveralls. Containerize Tyvek for disposal and place coveralls in plastic bag for reuse. 6. Remove air purifying respirator (APR), if used, and place the spent filters into a plastic bag for disposal. Filters should be changed daily or sooner depending on use and application. Place respirator into a separate plastic bag after cleaning and disinfecting. 7. Remove disposable gloves and place them in plastic bag for disposal. 8. Thoroughly wash hands and face in clean water and soap. 2.2 DRILLING AND MONITORING WELL INSTALLATION EQUIPMENT DECONTAMINATION All drilling equipment should be decontaminated at a designated location on site before drilling operations begin, between borings, and at completion of the project. Decontamination may be conducted on a temporary decontamination pad constructed at satellite locations within the site area in support of temporary work areas. The purpose of the decontamination pad is to contain wash waters and potentially contaminated soil generated during decontamination procedures. Decontamination pads may be constructed of concrete, wood, or plastic sheeting, depending on the site-specific needs and plans. Wash waters and contaminated soil generated during decontamination activities should be considered contaminated and thus, should be collected and containerized for proper disposal. Monitoring well casing, screens, and fittings are assumed to be delivered to the site in a clean condition. However, they should be steam cleaned and placed on polyethylene sheeting on-site prior to placement downhole. The drilling subcontractor will typically furnish the steam cleaner and water. The drilling auger, bits, drill pipe, any portion of drill rig that is over the borehole, temporary casing, surface casing, and other equipment used in or near the borehole should be decontaminated by the drilling subcontractor as follows: 1. Select an area removed from sampling locations that is both downwind and Tetra Tech, Inc. – Environmental SOP No. 026 Page 4 of 8 Title: General Equipment Decontamination Revision No. 3, June 2009 Last Reviewed: March 2019 downgradient. Decontamination must not cause cross-contamination between sampling points. 2. Maintain the same level of personal protection as was used for sampling. 3. Remove loose soil using shovels, scrapers, wire brush, etc. 4. Steam clean or pressure wash to remove all visible dirt. 5. If equipment has directly or indirectly contacted contaminated media and is known or suspected of being contaminated with oil, grease, polynuclear aromatic hydrocarbons (PAH), polychlorinated biphenyls (PCB), or other hard to remove organic materials, rinse equipment with pesticide-grade isopropanol. 6. To the extent possible, allow components to air dry. 7. Wrap or cover equipment in clear plastic until it is time to be used. 8. All wastewater from decontamination procedures should be containerized. 2.3 BOREHOLE SOIL SAMPLING DOWNHOLE EQUIPMENT DECONTAMINATION All soil sampling downhole equipment should be decontaminated before use and after each sample as follows: 1. Select an area removed from sampling locations that is both downwind and downgradient. Decontamination must not cause cross-contamination between sampling points. 2. Maintain the same level of personal protection as was used for sampling. 3. Prior to sampling, scrub the split-barrel sampler and sampling tools in a wash bucket or tub using a stiff, long bristle brush and Liquinox or Alconox solution. 4. After sampling, steam clean the sampling equipment over the rinsate tub and allow to air dry. 5. Place cleaned equipment in a clean area on plastic sheeting and wrap with aluminum foil. 6. Containerize all water and rinsate; disposable single-use sampling equipment should also be containerized. 7. Decontaminate all equipment placed down the hole as described for drilling equipment. 2.4 WATER LEVEL MEASUREMENT EQUIPMENT DECONTAMINATION Tetra Tech, Inc. – Environmental SOP No. 026 Page 5 of 8 Title: General Equipment Decontamination Revision No. 3, June 2009 Last Reviewed: March 2019 Field personnel should decontaminate the well sounder and interface probe before inserting and after removing them from each well. The following decontamination procedures should be used: 1. Select an area removed from sampling locations that is both downwind and downgradient. Decontamination must not cause cross-contamination between sampling points. 2. Maintain the same level of personal protection as was used for sampling. 3. Wipe the tape and probe with a disposable Alconox- or Liquinox-impregnated cloth or paper towel. 4. If immiscible layers are encountered, the interface probe may require steam cleaning or washing with pesticide-grade isopropanol. 5. Rinse with deionized water. 2.5 GENERAL SAMPLING EQUIPMENT DECONTAMINATION All non-disposable sampling equipment should be decontaminated using the following procedures: 1. Select an area removed from sampling locations that is both downwind and downgradient. Decontamination must not cause cross-contamination between sampling points. 2. Maintain the same level of personal protection as was used for sampling. 3. To decontaminate a piece of equipment, use an Alconox wash; a tap water wash; a solvent (isopropanol, methanol, or hexane) rinse, if applicable, or dilute (0.1 N) nitric acid rinse, if applicable; a distilled water rinse; and air drying. Use a solvent (isopropanol, methanol, or hexane) rinse for grossly contaminated equipment (for example, equipment that is not readily cleaned by the Alconox wash). The dilute nitric acid rinse may be used if metals are the analyte of concern. 4. Place cleaned equipment in a clean area on plastic sheeting and wrap with aluminum foil. 5. Containerize all water and rinsate. 2.6 GROUNDWATER SAMPLING EQUIPMENT The following procedures are to be employed for the decontamination of equipment used for groundwater sampling. Decontamination is not necessary when using disposable (single-use) pump Tetra Tech, Inc. – Environmental SOP No. 026 Page 6 of 8 Title: General Equipment Decontamination Revision No. 3, June 2009 Last Reviewed: March 2019 tubing or bailers. Bailer and downhole pumps and tubing decontamination procedures are described in the following sections. 2.6.1 Bailers 1. Select an area removed from sampling locations that is both downwind and downgradient. Decontamination must not cause cross-contamination between sampling points. 2. Maintain the same level of personal protection as was used for sampling. 3. Evacuate any purge water in the bailer. 4. Scrub using soap and water and/or steam clean the outside of the bailer. 5. Insert the bailer into a clean container of soapy water. Thoroughly rinse the interior of the bailer with the soapy water. If possible, scrub the inside of the bailer with a scrub brush. 6. Remove the bailer from the container of soapy water. 7. Rinse the interior and exterior of the bailer using tap water. 8. If groundwater contains or is suspected to contain oil, grease, PAH, PCB, or other hard to remove organic materials, rinse equipment with pesticide-grade isopropanol. 9. Rinse the bailer interior and exterior with deionized water to rinse off the tap water and solvent residue, as applicable. 10. Drain residual deionized water to the extent possible. 11. Allow components to air dry. 12. Wrap the bailer in aluminum foil or a clean plastic bag for storage. 13. Containerize the decontamination wash waters for proper disposal. 2.6.2 Downhole Pumps and Tubing 1. Select an area removed from sampling locations that is both downwind and downgradient. Decontamination must not cause cross-contamination between sampling points. 2. Maintain the same level of personal protection as was used for sampling. 3. Evacuate any purge water in the pump and tubing. Tetra Tech, Inc. – Environmental SOP No. 026 Page 7 of 8 Title: General Equipment Decontamination Revision No. 3, June 2009 Last Reviewed: March 2019 4. Scrub using soap and water and/or steam clean the outside of the pump and, if applicable, the pump tubing. 5. Insert the pump and tubing into a clean container of soapy water. Pump/run a sufficient amount of soapy water to flush out any residual well water. After the pump and tubing are flushed, circulate soapy water through the pump and tubing to ensure that the internal components are thoroughly flushed. 6. Remove the pump and tubing from the container. 7. Rinse external pump components using tap water. 8. Insert the pump and tubing into a clean container of tap water. Pump/run a sufficient amount of tap water through the pump to evacuate all of the soapy water (until clear). 9. If groundwater contains or is suspected to contain oil, grease, PAH, PCB, or other hard to remove organic materials, rinse the pump and tubing with pesticide-grade isopropanol. 10. Rinse the pump and tubing with deionized water to flush out the tap water and solvent residue, as applicable. 11. Drain residual deionized water to the extent possible. 12. Allow components to air dry. 13. For submersible bladder pumps, disassemble the pump and wash the internal components with soap and water, rinse with tap water, isopropanol (if necessary), and deionized water, and allow to air dry. 14. Wrap pump and tubing in aluminum foil or a clean plastic bag for storage. 15. Containerize the decontamination wash waters for proper disposal. 3.0 INVESTIGATION-DERIVED WASTE Investigation-derived waste (IDW) can include disposable single-use PPE and sampling equipment, soil cuttings, and decontamination wash waters and sediments. Requirements for waste storage may differ from one facility to the next. Facility-specific directions for waste storage will be provided in project - specific documents, or separate direction will be provided by the project manager. The following guidelines are provided for general use: 1. Assume that all IDW generated from decontamination activities contains the hazardous chemicals associated with the site unless there are analytical or other data to the contrary. Tetra Tech, Inc. – Environmental SOP No. 026 Page 8 of 8 Title: General Equipment Decontamination Revision No. 3, June 2009 Last Reviewed: March 2019 Waste solution volumes could vary from a few gallons to several hundred gallons in cases where large equipment required cleaning. 2. Containerized waste rinse solutions are best stored in 55-gallon drums (or equivalent containers) that can be sealed until ultimate disposal at an approved facility. 3. Label IDW storage containers with the facility name and address, date, contents, company generating the waste, and an emergency contact name and phone number. 4. Temporarily store the IDW in a protected area that provides access to the containers and allows for spill/leak monitoring, sampling of containers, and removal following determination of the disposal method. Tetra Tech, Inc.– Environmental SOP No. 027 Page 1 of 17 Title: Packaging and Shipping Samples Revision No. 7, November 2014 Last Reviewed: March 2019 1.0 BACKGROUND In any sampling program, the integrity of a sample must be ensured from its point of collection to its final disposition. This standard operating procedure (SOP) describes procedures for packaging and shipping samples. Steps in the procedures should be followed to ensure sample integrity and to protect the welfare of persons involved in shipping and receiving samples. 1.1 PURPOSE This SOP establishes the requirements and procedures for packaging and shipping samples. It has been prepared in accordance with the U.S. Environmental Protection Agency (EPA) “Contract Laboratory Program Guidance for Field Samplers.” Procedures described in this SOP should be followed for all routine sample packaging and shipping. If procedures are to be modified for particular contract- or laboratory-specific requirements, modified procedures should be clearly described in site-specific plans such as work plans, field sampling plans (FSPs), or quality assurance project plans (QAPPs). Deviations from the procedures in this SOP must be documented in a field logbook. This SOP assumes that samples are already in the appropriate sample jars and that the sample jars are labeled. This SOP does not cover the packaging and shipment of Dangerous Goods or Hazardous Materials. The shipment of Dangerous Goods (by air) and Hazardous Materials (by ground) requires specialized training. If you have NOT received this training in the last two years, you are NOT qualified to package or ship these materials and may be personally liable for any damages or fines. Contact one of Tetra Tech’s shipping experts for assistance. Instructions to access the training course, shipping experts and health and safety (H&S) contacts, and general information on packaging and shipping hazardous su bstances and dangerous goods can be obtained by checking the links provided in Section 1.4 (References). 1.2 SCOPE This SOP applies to packaging and shipping of environmental and non-hazardous samples. This SOP does not address shipping dangerous goods or hazardous materials. Tetra Tech, Inc.– Environmental SOP No. 027 Page 2 of 17 Title: Packaging and Shipping Samples Revision No. 7, November 2014 Last Reviewed: March 2019 1.3 DEFINITIONS Airbill: An airbill is a shipping form (such as a FedEx shipping form) acquired from the commercial shipper and is used to document shipment of the samples from the sampler to the designated analytical laboratory (see Figure 1). Custody-of-Custody form: A chain-of-custody form is used to document the transfer of custody of samples from the field to the designated analytical laboratory (see Figure 2). The chain-of-custody form is critical to the chain-of-custody process and is used to identify the samples in each shipping container to be shipped or delivered to the laboratory for chemical or physical (geotechnical) analysis (see Figure 3). Custody seal: A custody seal is a tape-like seal and is used to indicate that samples are intact and have not been disturbed during shipping or transport after the samples have been released from the sampler to the shipper (see Figure 4). The custody seal is part of the chain-of-custody process and is used to prevent tampering with samples after they have been packaged for shipping (see Figure 5). Environmental samples: Environmental samples include drinking water, most groundwater and surface water, soil, sediment, treated municipal and industrial wastewater effluent, indoor and ambient air, non-hazardous bulk materials, soil gas, dust, asbestos, and biological specimens. Environmental samples typically contain low concentrations of contaminants and, when handled, require only limited precautionary procedures. Field Blank: A field blank is any blank sample that is packaged and shipped from the field. Each field blank is assigned its own unique sample number. Field blanks include trip blanks, rinse blanks, and equipment blanks, all intended to assess potential cross-contamination. For example, a trip blank checks for contamination during sample handling, storage, and shipment from the field to the laboratory. Non-hazardous samples: Non-hazardous samples are those samples that do not meet the definition of a hazardous sample and do not need to be packaged and shipped in accordance with the International Air Travel Association’s (IATA’s) “Dangerous Goods Regulations” (DGR) or U.S. Department of Transportation’s (U.S. DOT’s) “Hazardous Materials Regulations” (HMR) defined in Title 49 Code of Federal Regulations (CFR). Tetra Tech, Inc.– Environmental SOP No. 027 Page 3 of 17 Title: Packaging and Shipping Samples Revision No. 7, November 2014 Last Reviewed: March 2019 The following definitions are provided to further distinguish environmental and non-hazardous samples from dangerous good and hazardous samples: Dangerous goods: Dangerous goods are articles or substances that can pose a significant risk to health, safety, or property when transported by air; they are classified as defined in Section 3 of the DGR (IATA 2014). Hazardous samples: Hazardous samples include dangerous goods and hazardous substances. Hazardous samples shipped by air should be packaged and labeled in accordance with procedures specified by the DGR; ground shipments should be packaged and labeled in accordance with the HMR. Hazardous substance: A hazardous substance is any material, including its mixtures and solutions, that is listed in 49 CFR 172.101 and its quantity, in one package, equals or exceeds the reportable quantity (RQ) listed in Table 1 to Appendix A of 49 CFR 172.101. 1.4 REFERENCES General Awareness, H&S contacts, and course training information” click here. (Tetra Tech, Inc., EMI Operating Unit. Intranet) Available on-line at: https://int.tetratech.com/sites/EMI/hs/Pages/Dangerous-Goods-Shipping.aspx International Air Transport Association (IATA). 2014. “Dangerous Goods Regulations. 2014.” For sale at: http://www.iata.org/publications/Pages/standards-manuals.aspx. Updated annually, with new edition available late in year. U.S. Environmental Protection Agency (EPA). 40 CFR, 763 Subpart F, Asbestos Hazards Emergency Response Act (AHERA). EPA. 2011. “Contract Laboratory Program Guidance for Field Samplers.” EPA 540-R-09-03. Available on-line at: http://www.epa.gov/oerrpage/superfund/programs/clp/download/sampler/CLPSamp-01- 2011.pdf. January. 1.5 REQUIREMENTS AND RESOURCES The procedures for packaging and shipping samples require the following: • Coolers (insulated ice chest) or other shipping containers appropriate to sample type • Ice • Bubble wrap or similar cushioning material • Chain-of-custody forms and seals Tetra Tech, Inc.– Environmental SOP No. 027 Page 4 of 17 Title: Packaging and Shipping Samples Revision No. 7, November 2014 Last Reviewed: March 2019 • Airbills • Resealable plastic bags for sample jars and ice • Tape (strapping and clear) • Large plastic garbage bags for lining the cooler • Temperature blank sample bottle filled with distilled water can be included in the cooler if appropriate to sample type Trip blank samples used to check for volatile contamination during sample handling in the field and shipment from field to laboratory should be included in the cooler if volatile organic compounds are requested for analysis. Also see Field Blank under definitions. 2.0 PROCEDURES The following procedures apply to packaging and shipping non-hazardous and environmental samples. 2.1 PACKAGING SAMPLES After they have been appropriately containerized and labeled, environmental samples should be packaged as described in this section. This section covers procedures for packing samples for delivery by commercial carrier (air or ground) and hand delivery of environmental samples (by employee or courier), as well as shipping asbestos and air quality samples. Note that these instructions are general; samplers also should be aware of client-specific requirements concerning the placement of custody seals or other packaging provisions. 2.1.1 Packaging Samples for Delivery by Commercial Carrier (Air or Ground) Samples shipped by commercial carriers should be packed for shipment using the following procedures and in compliance with all carrier requirements: Preparing the sample: 1. Allow a small amount of headspace in all bottles, or as instructed by the laboratory (except volatile organic compound [VOC] containers with a septum seal) to compensate for any changes in pressure and temperature during transfer. 2. Be sure the lids on all bottles are tight (will not leak). Lids maybe taped or sealed with custody seals as added protection or as required. 3. Place sample containers in resealable plastic bags. Preparing the cooler: Tetra Tech, Inc.– Environmental SOP No. 027 Page 5 of 17 Title: Packaging and Shipping Samples Revision No. 7, November 2014 Last Reviewed: March 2019 1. Secure and tape the drain plug of the cooler with fiber or duct tape. 2. It is recommended that the cooler be lined with a large plastic garbage bag before samples, ice, and absorbent packing material are placed in the cooler. 3. Wrap the sample containers in bubble wrap or line the cooler (bottom and sides) with a cushioning material to prevent breakage of bottles or jars during shipment. 4. Add a sufficient quantity of ice to the cooler to cool samples to 4 °C (+ 2 °C). Ice should be double bagged in resealable plastic bags to prevent the melted ice from leaking out. If required, include one temperature blank (a sample bottle filled with distilled water) per cooler. 5. For volatile organic analysis (VOA) samples only, include one trip blank for VOA analysis per shipment matrix in each cooler. 6. Fill all remaining space between the bottles or jars with bubble wrap. 7. Securely fasten the top of the large garbage bag with tape (preferably plastic electrical tape). 8. If more than one cooler is being shipped, mark each cooler as “1 of 2,” “2 of 2,” and so forth. 9. Place the chain-of-custody forms (see Figure 2) into a resealable plastic bag, and tape the bag to the inner side of the cooler lid (see Figure 3). If you are shipping more than one cooler, copy the chain-of-custody form so that there is one copy of all forms in each cooler. The samples listed on the chain-of-custody form must match exactly with the contents of the cooler. Tape any instructions for returning the cooler to the inside of the lid. 10. Close the lid of the cooler and tape it shut by wrapping strapping tape around both ends and hinges of the cooler at least once. 11. Place two signed custody seals (see Figure 4) on opposite sides of the cooler, ensuring that each one covers the cooler lid and side of the cooler (see Figure 5; note that in contrast to the figure, the seals should be placed on the opposite sides of the cooler and offset from each other, rather than directly across from each other as shown in Figure 5). Place clear plastic tape over the custody seals so that the cooler cannot be opened without breaking the seal. 12. Shipping containers must be marked "THIS END UP.” Arrow labels, which indicate the proper upward position of the container, may also be affixed to the container (see Figures 3 and 5). A label containing the name, phone number, and address of the shipper should be placed on the outside of the container (Federal Express [FedEx] label) (see Figure 1). 13. Ship samples overnight using a commercial carrier such as FedEx. 2.1.2 Hand Delivery of Environmental Samples (by Employee or Courier) Samples hand-delivered to the laboratory should be packed for shipment using the following procedures: Preparing the sample: 1. Bottles can be filled completely with sample (required for VOC containers with a septum seal). 2. Be sure the lids on all bottles are tight (will not leak). Preparing the cooler: 1. Secure and tape the drain plug of the cooler with fiber or duct tape. Tetra Tech, Inc.– Environmental SOP No. 027 Page 6 of 17 Title: Packaging and Shipping Samples Revision No. 7, November 2014 Last Reviewed: March 2019 2. Wrap the sample containers in bubble wrap and/or line the cooler (bottom and sides). 3. Add a sufficient quantity of ice to the cooler to cool samples to 4 °C. Ice should be double bagged in resealable plastic bags to prevent the melted ice from leaking out. If required, include one temperature blank (a sample bottle filled with distilled water) per cooler. 4. For VOA samples only, include one trip blank for VOA analysis per shipment matrix in each cooler. 5. If more than one cooler is being shipped, mark each cooler as “1 of 2,” “2 of 2,”and so forth. 6. Place chain-of-custody form (see Figure 2) in a resealable plastic bag and tape to the inside of the cooler lid, close the lid, seal with custody seals, and transfer the cooler to the courier (see Figure 3). Alternatively, when samples will be delivered directly to the laboratory, close the cooler and hand-deliver it with the chain-of-custody form. The samples listed on the chain-of- custody form must match exactly with the contents of the cooler. 7. Include any instructions for returning the cooler to the inside of the lid. 8. Place two signed custody seals (see Figure 4) on opposite sides of the cooler, ensuring that each one covers the cooler lid and side of the cooler (see Figure 5, note that the seals should be placed on the opposite sides of the cooler and offset from each other, rather than directly across from each other as shown in Figure 5). Place clear plastic tape over the custody seals so that the cooler cannot be opened without breaking the seal. 9. Shipping containers must be marked “THIS END UP,” and arrow labels, which indicate the proper upward position of the container should be affixed to the container (see Figures 3 and 5). 2.1.3 Shipping Asbestos Samples Asbestos samples shipped by commercial carriers should be packed for shipment using the following procedures and in compliance with all carrier requirements: 1. Place each asbestos sample in a small resealable plastic bag. Place the bags of asbestos samples in a large resealable plastic bag. 2. Select a rigid shipping container (FedEx box) and pack the cassettes upright in a non- contaminating, non-fibrous medium such as a bubble pack to prevent excessive movement during shipping. 3. Avoid using expanded polystyrene because of its static charge potential. Also avoid using particle-based packaging materials because of possible contamination. 4. Affix custody seals to the top of the cassettes or outer sample bag so that the bags cannot be opened without breaking the seal. 5. Insert the chain-of-custody form in the box. Include a shipping bill and a detailed listing of samples shipped, their descriptions and all identifying numbers or marks, sampling data, shipper’s name, and contact information. 6. Ship bulk samples in a separate container from air samples. Bulk samples and air samples delivered to the analytical laboratory in the same container will be rejected. Tetra Tech, Inc.– Environmental SOP No. 027 Page 7 of 17 Title: Packaging and Shipping Samples Revision No. 7, November 2014 Last Reviewed: March 2019 7. For each sample set, designate which are the ambient samples, which are the abatement area samples, which are the field blanks, and which is the sealed blank if sequential analysis is to be performed. 8. Hand-carry samples to the laboratory in an upright position if possible; otherwise, choose that mode of transportation least likely to jar the samples in transit. 9. Address the package to the laboratory sample coordinator by name when known and alert him or her of the package description, shipment mode, and anticipated arrival as part of the chain-of-custody and sample tracking procedures. This information will also help the laboratory schedule timely analysis for the samples when they are received. 2.1.4 Shipping Air Samples Packaging and shipping requirements for air samples vary depending on the media used to collect the samples and the analyses required. Sampling media typically include Summa canisters and Tedlar bags for whole air samples, filters for metals and particulate matter, and sorbent tubes for organic contaminants. This section of the SOP provides general guidelines for packaging and shipping air samples collected using these media. The project FSP or QAPP should also be reviewed for any additional project-specific requirements or instructions. Summa Canister Samples 1. Close the canister valve by tightening the knob clockwise or flipping the toggle switch. Replace the brass cap on the canister inlet. 2. If a flow controller was used to collect the air sample over a specified time interval, the flow controller should be removed before replacing the brass cap. 3. Fill out the sample tag on the canister with the sample number and the date and time of collection. Include the identification number of the flow controller on the sample tag if one was used. Make sure the information on the sample tag matches the chain-of-custody form. 4. Complete the chain-of-custody form. In addition to the information normally included, the form should include the following data: sample start and stop dates and times; initial and final Summa canister vacuum readings; Summa canister identification number; and flow controller identification number. 5. Package the Summa canister (and flow controller) in its original shipping box with the original packaging material. Tape the box shut and apply custody seals if required. Note: Summa canisters should never be packaged with ice. 6. Summa canister shipments typically include several canisters, and may include more than one shipping box. The chain-of-custody form for the shipment should be sealed within one of the shipping boxes. 7. Ship the samples by a method that will meet the holding time. Summa canister samples should be analyzed within 30 days of sample collection. Tedlar Bag Samples 1. Close the Tedlar bag by tightening the valve clockwise. Tetra Tech, Inc.– Environmental SOP No. 027 Page 8 of 17 Title: Packaging and Shipping Samples Revision No. 7, November 2014 Last Reviewed: March 2019 2. Fill out the label on the bag with the sample number and the date and time of sample collection. Make sure the information on the label matches the chain-of-custody form. 3. Complete the chain-of-custody form. 4. Package the Tedlar bag in a shipping box with appropriate packing material. Multiple bags can be packaged in the same box. Tape the box shut and apply custody seals if required. Note: Tedlar bag samples should not be cooled or packaged with ice. 5. Tedlar bag shipments may include more than one shipping box. The chain-of-custody form for the shipment should be sealed within one of the shipping boxes. 6. Ship the samples using priority overnight delivery. Tedlar bag samples should be analyzed within 3 days of sample collection. Filter Cassette Samples 1. Disconnect the filter cassette from the air sampling pump and replace the plastic caps on the inlet and outlet openings. 2. Attach a label to the sample that includes the sample number and the date and time of sample collection. Make sure the information on the label matches the chain-of-custody form. 3. Complete the chain-of-custody form. In addition to the information normally included, the form should include the following data: sample start and stop dates and time s; initial and final air flow rates (or average flow rate); volume of air sampled; and sampling pump identification number. 4. Package the filter cassettes in a shipping box (such as a FedEx box). Use an appropriate packing material (such as bubble wrap) to separate the samples and prevent damage. 5. Place the chain-of-custody form within the box, seal the box, and apply custody seals if required. Filter cassette samples typically do not need to be cooled, but check the FSP or QAPP for project-specific requirements. 6. Ship the samples by a method that will meet the holding time. Sorbent Tube Samples 1. Disconnect the sample tube from the air sampling pump and seal both ends of the tube with plastic caps. 2. Complete a sample label that includes the sample number and the date and time of sample collection. Make sure the information on the label matches the chain-of-custody form. 3. If the tube is small and the label cannot be attached to the tube, the tube can be placed in a small sealable plastic bag and the label can be attached to the bag or placed inside the bag with the tube. 4. Complete the chain-of-custody form. In addition to the information normally included, the form should include the following data: sample start and stop dates and times; initial and final air flow rates (or average flow rate); volume of air sampled; and sampling pump identification number. Tetra Tech, Inc.– Environmental SOP No. 027 Page 9 of 17 Title: Packaging and Shipping Samples Revision No. 7, November 2014 Last Reviewed: March 2019 5. Packaging requirements for the sample tubes will depend on the analysis required, and the sampler should check the FSP or QAPP for project-specific requirements (for example, tubes may need to be wrapped in aluminum foil to prevent exposure to light). Packaging containers and methods include (1) shipping boxes (as described under filter cassette samples), (2) small sample coolers filled with double-bagged ice, and (3) small sample coolers filled with blue ice. 6. Place the chain-of-custody form within the box or container, seal the box or container, and apply a custody seal if required. 7. If coolers are used for shipping, tape instructions for returning the cooler to the inside of the lid. 8. Ship the samples by a method that will meet the holding time. Polyurethane Foam (PUF) Tube Samples 1. Disconnect the PUF tube from the air sampling pump and wrap the tube in aluminum foil. 2. Attach a label to the wrapped sample tube that includes the sample number and the date and time of sample collection. Make sure the information on the label matches the chain-of- custody form. 3. Wrap the PUF tube in bubble wrap and place the tube in a glass shipping jar. 4. Complete the chain-of-custody form. In addition to the information normally included, the form should include the following data: sample start and stop dates and times; initial and final air flow rates (or average flow rate); volume of air sampled; and sampling pump identification number. 5. Package the PUF tube jars in a cooler that is filled with double-bagged ice. Use bubble wrap or other cushioning material to separate the samples and prevent breakage. 6. Place the chain-of-custody form within the cooler, seal the cooler, and apply a custody seal if required. 7. If coolers are used for shipping, tape instructions for returning the cooler to the inside of the lid. 8. Ship the samples by a method that will meet the holding time. Samples collected in PUF tubes typically must be extracted within 7 days of collection. 2.2 SHIPPING DOCUMENTATION FOR SAMPLES Airbills, chain-of-custody forms, and custody seals must be completed for each shipment of non- hazardous environmental samples. Figures 1, 2, and 4 provide examples of these forms and instructions for completing them. Field staff collecting samples should also review their field work plans to confirm what documentation must be completed during each sampling event, including client-specific requirements. For example, some EPA programs have a specific requirement to use Scribe software, an environmental data management system, to create sample documentation, electronically input information into Traffic Report or chain-of-custody forms, and enter other data. Tetra Tech, Inc.– Environmental SOP No. 027 Page 10 of 17 Title: Packaging and Shipping Samples Revision No. 7, November 2014 Last Reviewed: March 2019 • The Scribe software can be accessed from the EPA Environmental Response Team (ERT) at the following address: http://www.ertsupport.org/scribe_home.htm • The ERT User Manual for Scribe, reference, and training materials can be accessed from the Scribe Support Web site at the following address: http://www.epaosc.org/scribe Note that some laboratories must routinely return sample shipping coolers within 14 calendar days after the shipment has been received. Therefore, the sampler should also include instructions for returning the cooler with each shipment, when possible. The sampler (not the laboratory) is responsible for paying for return of the cooler and should include shipping airbills bearing the sampler’s shipping account number, as well as a return address to allow for return of the cooler (see Figure 1). Samplers shoul d use the least expensive option possible for returning coolers. 2.3 SHIPMENT DELIVERY AND NOTIFICATION A member of the field sampling team must contact the laboratory to confirm it accepts deliveries on any given day, especially Saturdays. In addition, samplers should ensure the laboratory has been notified in advance of the pending shipment and notify any additional parties as required. The sampler needs to know the laboratory’s contact name, address, and telephone number and be aware of the laboratory’s requirements for receiving samples. The sampler needs to know the shipping company’s name, address, and telephone number (see Figure 1). In addition, samplers should be aware of the sample holding times, shipping company’s hours of operation, shipping schedule, and pick-up and drop-off requirements to avoid delays in analytical testing. Priority Overnight Delivery Priority overnight delivery is typically the best method for shipment. Delays caused by longer shipment times may cause the sample temperature to rise above the acceptable range of 4° C (+ 2 ° C) and technical holding may expire, which in turn may compromise sample integrity and require recollection of samples for analysis. If sample delivery procedures are to be modified for particular contract- or laboratory-specific requirements, the procedures should be clearly described in site- specific plans such as work plans, FSPs, or QAPPs. Saturday Delivery Tetra Tech, Inc.– Environmental SOP No. 027 Page 11 of 17 Title: Packaging and Shipping Samples Revision No. 7, November 2014 Last Reviewed: March 2019 If planning to ship samples for Saturday delivery, the laboratory must be contacted in advance to confirm it will accept deliveries on Saturdays or arrange for them to be accepted. In addition, samplers should ensure the laboratory has been notified in advance of the pending shipment and notify any additional parties as required. 2.4 HEALTH AND SAFETY CONSIDERATIONS In addition to the procedures outlined in this SOP, all field staff must be aware of and follow the health and safety practices that result from the Activity Hazard Analyses (AHA) for the project. The AHAs include critical safety procedures, required controls, and minimum personal protective equipment (PPE) necessary to address potential hazards. The hazards specific to project tasks must be identified and controlled to the extent practicable and communicated to all project personnel via the approved, project-specific Health and Safety Plan (HASP). 3.0 POTENTIAL PROBLEMS The following potential problems may occur during sample shipment: • Leaking package. If a package leaks, the carrier may open the package and return the package. Special care should be taken during sample packaging to minimize potential leaks. • Improper labeling and marking of package. If mistakes are made in labeling and marking the package, the carrier will most likely notice the mistakes and return the package to the shipper, thus delaying sample shipment. A good practice is to have labels, forms, and container markings double checked by a member of the field team. • Bulk samples and air samples delivered to the analytical laboratory in the same container. If samples are combined in this way, they will be rejected. Always ship bulk samples in separate containers from air samples. • Issues in packing asbestos samples. When asbestos samples are shipped, avoid using expanded polystyrene because of its static charge potential. Also avoid using particle-based packaging materials with asbestos samples because of possible contamination. • Improper, misspelled, or missing information on the shipper’s declaration. The carrier will most likely notice these errors as well and return the package to the shipper. A good practice is to have another field tram member double check this information. • Missed drop off time or wrong location. Missing the drop off time or having the wrong location identified for drop off will delay delivery to the laboratory and may cause technical holding times to expire. Establish the time requirements in advance of completing the field Tetra Tech, Inc.– Environmental SOP No. 027 Page 12 of 17 Title: Packaging and Shipping Samples Revision No. 7, November 2014 Last Reviewed: March 2019 effort and be sure and provide some contingency time for potential delays such as traffic or checking and redoing paperwork. • Incorrectly packaging samples for analysis at multiple laboratories. For example, inorganic samples may be shipped to one laboratory for analysis, while organic samples may need to be shipped to another laboratory. All field staff should be aware which samples are to be shipped to which laboratory they package samples for multiple types of analysis. • Holidays or weather-related delays. Be aware of holidays and weather forecasts that could cause delays in delivery. Delays caused by longer shipping times may cause technical holding times to expire, which in turn may compromise sample integrity or require recollection of samples for analysis. • Not noting field variances in field log book. Field variances should be noted in the field log book and the project manager notified. Common field variances include: − Less sample volume collected than planned. Notify appropriate staff and the laboratory to ensure there is an adequate amount for analysis. − Sample collected into incorrect jar because of broken or missing bottle-ware. Notify appropriate laboratory staff to ensure there is no confusion regarding the analysis of the sample. Tetra Tech, Inc.– Environmental SOP No. 027 Page 13 of 17 Title: Packaging and Shipping Samples Revision No. 7, November 2014 Last Reviewed: March 2019 FIGURE 1 EXAMPLE OF A FEDEX US AIRBILL FOR LOW LEVEL ENVIRONMENTAL SAMPLES Filling Out the FedEx US Airbill The sender must complete the following fields on the pre-printed airbill: − Section 1: Date − Section 1: Sender’s FedEx Account Number − Section 1: Sender’s Name, Company, Address, and Phone Number − Section 2: Internal Billing Reference (Project Number) − Section 3: Recipient’s Name, Company, Address, and Phone Number − Section 4: Express Package or Freight Services (Priority Overnight) − Section 5: Packaging (usually “Other,” your own packaging) − Section 6: Special Handling (Saturday delivery if prearranged with receiving laboratory; “No” dangerous goods contained in shipment) − Section 7: Payment (“Bill to Sender”) − Section 7: Total Number of Packages − Section 7: Total Weight (completed by FedEx employee) − Section 8: Delivery Signature Options (“No Signature Required”) Tetra Tech, Inc.– Environmental SOP No. 027 Page 14 of 17 Title: Packaging and Shipping Samples Revision No. 7, November 2014 Last Reviewed: March 2019 FIGURE 2 EXAMPLE OF A CHAIN-OF-CUSTODY FORM (WHITE COPY) Completing a Sample Chain-of-Custody Form After samples have been collected, they will be maintained under chain-of-custody procedures. These procedures are used to document the transfer of custody of the samples from the field to the designated analytical laboratory. The same chain-of-custody procedures will be used for the transfer of samples from one laboratory to another, if required. The field sampling personnel will complete a Chain-of-Custody and Request for Analysis (CC/RA) Form (Figure 1, Chain of Custody Record) for each separate container of samples to be shipped or delivered to the laboratory for chemical or physical (geotechnical) analysis. Information contained on the triplicate, carbonless form will include: Tetra Tech, Inc.– Environmental SOP No. 027 Page 15 of 17 Title: Packaging and Shipping Samples Revision No. 7, November 2014 Last Reviewed: March 2019 1. Project identification (ID) (for example, contract and task order number); 2. Project Contract Task Order (CTO) number; 3. Laboratory Project Order (PO) number; 4. Tetra Tech Technical Contact; 5. Tetra Tech Project Manager 6. Laboratory name; 7. Field sampler names; 8. Field sampler signature; 9. Sample ID; 10. Point ID and Depth (Do NOT include this information on the laboratory copy of the chain-of- custody (top white copy); 11. Date and time of sampling; 12. Sample matrix type; 13. Sample preservation method; note “NONE” if no preservatives; 14. Number and types of sample containers and container capacity; 15. Sample hazards (if any); 16. Requested analysis; 17. Requested sample turnaround time or any special remarks; 18. Page __ of __; 19. Method of shipment; 20. Carrier/waybill number (if any); 21. Signature, name, and company of the person relinquishing the samples and the person receiving the samples when custody is transferred; 22. Date and time of sample custody transfer; 23. Condition of samples when they are received by the laboratory. The sample collector will cross out any blank space on the CC/RA Form below the last sample number listed on the part of the form where samples are listed. The sampling personnel whose signature appears on the CC/RA Form is responsible for the custody of a sample from time the sample is collected until the custody of the sample is transferred to a designated laboratory, a courier, or to another Tetra Tech employee for transporting a sample to the designated laboratory. A sample is considered to be in custody when the custodian: (1) has direct possession of it; (2) has plain view of it; or (3) has securely locked it in a restricted access area. Tetra Tech, Inc.– Environmental SOP No. 027 Page 16 of 17 Title: Packaging and Shipping Samples Revision No. 7, November 2014 Last Reviewed: March 2019 Custody is transferred when both parties to the transfer complete the portion of the CC/RA Form under “Relinquished by” and “Received by” or a sample is left at a FedEx facility pending shipment. Signatures, printed names, company names, and date and time of custody transfer are required. When custody is transferred, the Tetra Tech sampling personnel who relinquished the samples will retain the third sheet (pink copy) of the CC/RA Form. When the samples are shipped by a common carrier, a Bill of Lading supplied by the carrier will be used to document the sample custody, and its identification number will be entered on the CC/RA Form. Receipts of Bills of Lading will be retained as part of the permanent documentation in the Tetra Tech project file. FIGURE 3 EXAMPLE OF A SAMPLE COOLER WITH ATTACHED DOCUMENTATION Place the necessary paperwork (chain-of-custody form, cooler return instructions, and associated paperwork) in the shipping cooler or acceptable container. All paperwork must be placed in a plastic bag or pouch and then secured to the underside of the shipping container lid. Source: U.S. Environmental Protection Agency. 2011. Tetra Tech, Inc.– Environmental SOP No. 027 Page 17 of 17 Title: Packaging and Shipping Samples Revision No. 7, November 2014 Last Reviewed: March 2019 FIGURE 4 EXAMPLE OF A CUSTODY SEAL FIGURE 5 EXAMPLE OF SHIPPING COOLER WITH CUSTODY SEALS Source: U.S. Environmental Protection Agency. 2011. Please note that the two seals typically are affixed to opposite sides of the cooler and offset from each other, although the offset is not depicted on the EPA figure above. TETRA TECH, INC. Standard Operating Procedure No. 030 Revision Date: 10/26/2022 Created by: Anthony Camacho Project name: Recycled Earth Page 1 of 15 Groundwater M onitoring W ell I nstallation 1. PURPOSE The purpose of this Standard Operating Procedure (SOP) is to delineate the quality control measures required to ensure the accurate installation of groundwater monitoring wells. The term monitoring well is used to denote any environmental sampling well. 2. PROCEDURE 2.1 FIELD PREPARATION Notify client, property owner prior to sampling date in case there is any requirement to reach property. 2.1.1 Forms Gather proper field forms necessary for field sampling such as: Daily Report Sheets Field Service Request Tailgate Health and Safety Excavation Permits Utility clearances Borehole logging form Well completion forms Appropriate work plan 2.1.2 Drilling Equipment Appropriately sized drill rig adequately equipped with augers, bits, drill stem, etc. Steam cleaner and water obtained from an approved source for decontaminating drilling equipment TETRA TECH, INC. Standard Operating Procedure Revision Date: 10/26/2022 Created by: Anthony Camacho Project name: Recycled Earth Page 2 of 15 PID Water level indicator LEL-oxygen monitor Steel drums for investigation derived waste (drill cuttings, contaminated PPE, decon solution) (if necessary) Source of approved water Heavy plastic sheeting Decontamination area 2.1.3 Well installation materials The specifications for the following materials are included in the well construction: Well screen Riser pipe Plugs/caps Filter pack Bentonite Portland cement Steel protective casing Submersible pump Surge block Concrete Decontamination equipment including: Deionized or distilled water Alconox graduated cylinders paper towel TETRA TECH, INC. Standard Operating Procedure Revision Date: 10/26/2022 Created by: Anthony Camacho Project name: Recycled Earth Page 3 of 15 2.1.4 Personal Equipment Appropriate PPE (see HASP) Munsell color chart Hand lens Folding rule First aid kit Fire extinguisher 2.2 WELL DRILLING PROCEDURE 2.2.1 Rationale Sound groundwater sample integrity is dependent primarily on strict adherence to properly conceived monitor well construction and development procedures. In addition, it is equally important that boreholes (i.e., soil borings, wells, and piezometers) be abandoned properly, when necessary, to preclude the possibility of cross-contamination of water-bearing zones. To ensure that these goals are met, the following monitoring well drilling, and completion procedures will be utilized. 2.2.2 Preliminary procedures Never assume the rig will arrive on-site completely decontaminated from the previous job. Always inspect it. Road dust can have elevated levels of organics and inorganics attached to it. It is always a good idea to have the drillers lay out all the tools from their side tool panels and wash both the tools and the storage compartments. Between holes and on-site locations, ensure that dirty tools are decontaminated before being returned to these compartments The following standard field procedures should be followed at each borehole location: Check the location and number of the drilling location against a map and against the flag or stake. A good rule of thumb is to measure twice, and drill once. TETRA TECH, INC. Standard Operating Procedure Revision Date: 10/26/2022 Created by: Anthony Camacho Project name: Recycled Earth Page 4 of 15 Make sure you have a utility clearance for that location. Back the rig into position so you do not have to drive over the finished hole. Set up the work area (and sample holding area) to be upwind of the rig exhaust. This may require the work area to be moved several times during the day. Check the condition of the driller’s downhole measuring device. Often these devices are missing several inches, tenths of inches, or feet, and, if used, will result in contradictory hole and well completion information. Remove any electrical tape or materials from any devices that, if lost downhole, could result in possible contamination of groundwater. Ensure that the measuring device is decontaminated each time it is used. Drilling is a team effort that includes personnel and the driller. Arrange with the driller before activities begin to keep you informed of what he/she sees or believes is happening downhole. For example, the driller can often tell you when the soil is getting harder or softer, or when he/she is losing or gaining fluids (the hole is making water). These comments often may be related later to lithologic and hydro stratigraphic changes and, therefore, may verify logs. 2.2.3 Hollow-stem auger drilling Hollow-stem auger (HSA) drilling techniques will be employed to advance most of the borings. HSA drilling uses a series of interlocking auger flights that consist of a continuous spiral or thread that is wrapped around and welded to a central hollow (tubular) stem or axle. The finished tool resembles a wood or machine screw, but without the taper. The lead auger has a set of teeth that cut into the penetrated earth materials. The auger threads then convey the cuttings to the surface. Hollow-stem augers are specified by their inside diameter (ID) and not the outer diameter (OD) of the hole they drill. 2.2.3.1 Advantages Usually, smaller sized rig than other drilling methods, resulting in more mobility. Shorter boom also allows this type of rig to drill in areas of low clearance. TETRA TECH, INC. Standard Operating Procedure Revision Date: 10/26/2022 Created by: Anthony Camacho Project name: Recycled Earth Page 5 of 15 Generally less messy than mud rotary techniques that require a water supply and may result in the need to containerize drilling fluids (e.g., muds) as well as cuttings. Because no drilling muds are used (introduced to the hole), soil and groundwater samples are considered more accurate or representative. Well development time should also be less than for the methods that use mud. Sample moisture content is more likely to be representative of the formation. Small-diameter monitoring wells can be installed quickly and efficiently. The augers provide a temporary casing that prevents hole collapse, and there are no extra drilling fluids with which to contend. 2.2.3.2 Limitations Limited in depth of penetration to approximately 75 feet (even less as auger size increases), depending on the materials encountered and the size of the drill rig. Difficult to drill through running or heaving sands. Can smear a layer of fine-grained soil on the side of borehole that may prevent groundwater from entering. In tight formations or in areas of difficult drilling, the friction of the augers may bake this skin, resulting in the finished well having limited or no recharge. The finer the matrix, the greater the chance for smearing the side of the hole. The augers can carry contamination down the hole during the drilling process. In many formations, the auguring process can be slower than other methods. Not effective in gravelly or in bouldery soils. The method limits the size of hole that can be drilled. Generally limited to overburden, weathered, or extremely soft bedrock. 2.2.3.2 Procedures Once the rig is in place, ensure that it is level by insisting that the driller have a carpenter’s level on each rig. Use the level on the rig and the auger. Some rigs have TETRA TECH, INC. Standard Operating Procedure Revision Date: 10/26/2022 Created by: Anthony Camacho Project name: Recycled Earth Page 6 of 15 built-in bubble levels. Hanging the first auger and visually assessing its plumbness is not as acceptable, particularly on holes expected to be 15 feet or greater in depth. The first split-spoon is generally taken outside the augers. Samples within the first 1 to 2 feet of the surface are often compressed by the split-spoon advancement process, resulting in what appears to be reduced recoveries. Do not allow the driller to double spoon during sampling. This is done by sampling an interval (e.g., 5 to 7 ft below ground surface (bgs)) and, without auguring over that interval, immediately sampling the next interval (e.g., 7 to 9 ft bgs) using the previous split-spoon’s hole for guidance. This usually results in soil from the upper hole collecting in the second spoon, thereby compromising the sample. After the first sample is collected, a 5-foot length of auger is advanced, and a split-spoon sample is collected from 5 to 7 feet. This is referred to as a 5-foot sampling interval. Continuous sampling is done by split-spooning an interval (e.g., 10 to 12 feet), then advancing the augers over that same interval. So the next sample would be taken ahead of the augers, from 12 to 14 feet and so on. A center plug, which prevents earthen materials from moving up into the augers, should be used in all but the hardest of sediments. The center plug is connected to the drive head of the rig by rods to ensure that the plug and rods rotate with the auger flights. The rods used to lower the split-spoon into the augers are also used, along with the auger count, to measure the relative position of the spoon from the surface. Inspect the rods prior to use to ensure that they are the lengths the drillers perceive them to be. Carefully watch the progression of the spoon while recording blow counts and note irregularities in the penetration rate. The use of “fingers” or sand catchers in the sampler may help produce better retrieval volumes in non-cohesive soils. Record observations of: - Auger penetration rates. TETRA TECH, INC. Standard Operating Procedure Revision Date: 10/26/2022 Created by: Anthony Camacho Project name: Recycled Earth Page 7 of 15 - Characteristics of auger cuttings (i.e., moisture content, color, and texture), including changes in the nature (behavior) of the cuttings. For example, if the soil begins to form balls or rope, moisture in the soil has probably increased at that depth. - Gravel, boulders, and competent bedrock will make the rig bounce, vibrate, or dance as well as chatter. - Steam coming off the augers. Slow the rig down if possible to prevent baking. - Remember that the cuttings appear at the surface after a time lag, and that this lag increases with the depth of the hole; therefore, it is not possible to correlate cuttings with the exact depth being drilled. Running, heaving, or flowing sands occur when augers intercept a saturated soil unit whose fluid or formational pressure pushes its materials out into the boring and up the augers. The use of a center plug can help prevent this from happening, but not after the fact. If running sands are encountered, the following techniques may be used: - Remove augers and continue the hole using the rotary-flush technique. - Fill the augers with potable water to apply a reverse/positive pressure against that of the sands. - Drill down below the running sand unit and muck out the augers using a sand pump, dart bailer, and/or roller bit wash. Drilling into or through sand (flowing and non-flowing), gravel, or expanding clay (i.e., clay units that, because of overburden pressures, expand into the hole) can lock up and bind the augers. Avoid leaving the augers in the hole for any prolonged period (e.g., overnight) if any of these conditions are encountered. This may be difficult when rock coring is required. Record on a routine basis the levels of any fluids (depth to water and/or product) in the auger string. Depth to bedrock is based on a combination of both split-spoon and auger refusal. If spoon refusal (50 blows with no penetration) is met and the recovered sample does TETRA TECH, INC. Standard Operating Procedure Revision Date: 10/26/2022 Created by: Anthony Camacho Project name: Recycled Earth Page 8 of 15 not verify bedrock, attempt to auger deeper. A boulder may have stopped the spoon. Continuing the hole using the augers may push the obstruction aside. If the augers advance, continue to the next scheduled sampling internal and attempt to collect another spoon sample. Continue this process until both the spoon and augers have met refusal. Document all refusals (being careful to label them as being either spoon or auger refusal), rig gyrations, and physical conditions of spoons. The only sure way to determine bedrock refusal is to take a core. If a boulder is struck with the augers and the target depth has not been achieved, move approximately 5 feet away from the hole if you are installing a well (10 feet away if you are not) and begin drilling a new borehole. Ensure that the original borehole is properly abandoned. The 6-inch ID augers used for 2-inch diameter groundwater monitoring well placement can generally be used to a depth of 50 feet. At locations where the overburden is greater than 50 or where heaving sands are expected, HSA methods may be replaced with the case-and-wash drilling method described in the following subsections. 2.3 Well Construction 2.3.1 Casing/Screen Typically, only polyvinyl chloride (PVC), Teflon (polytetrafluoroethylene or PTFE), and/or stainless steel will be used. All well screens will be commercially fabricated, slotted or continuously wound, and have an inside diameter (ID) equal to or greater than the ID of the well casing. An exception may be needed in the case of continuously wound screens because their supporting rods may reduce the full ID. Stainless steel screens may be used with PVC or PTFE well casing. No fitting will restrict the ID of the joined casing and/or screen. All screens, casings, and fittings will be new. Screens will have the largest open area per unit length that is practical for the adjacent aquifer and available filter. TETRA TECH, INC. Standard Operating Procedure Revision Date: 10/26/2022 Created by: Anthony Camacho Project name: Recycled Earth Page 9 of 15 Couplings within the casing and between the casing and screen will be compatibly threaded. Thermal or solvent welded couplings on plastic pipe will not be used. This also applies to threaded or slip-joint couplings thermally welded to the casing by the manufacturer or in the field. Each cap will be constructed to preclude binding to the well casing due to tightness of fit, unclean surface, or frost, and secure enough to preclude debris and insects from entering the well. Caps and risers may be threaded; however, sufficient annular space will be allowed between the well and protective casing to enable one to thaw any frosted shut caps. Preferably, unfiltered vents will not be placed in these caps or in the well riser/stickup. Unfiltered vents may compromise water sample integrity by allowing foreign materials to enter the well between sampling events. Caps will be loose enough to allow equilibration between hydrostatic and atmospheric pressures or have filtered vents. Special cap (and riser) designs will be provided for wells in floodplains and those instances where the top of the well may be below grade, e.g., in roadways and parking lots. The use of well centralizers will be considered for wells deeper than 20 ft. When used, they will be of PVC, PTFE, or stainless steel and attached to the casing at regular intervals by means of stainless steel fasteners or strapping. Centralizers will not be attached to the well screen or to that part of the well casing exposed to the granular filter or bentonite seal. Centralizers will be oriented to allow for the unrestricted passage of the tremie pipe(s) used for filter pack and grout placement. 2.3.2 Filter Pack All granular filters will be approved prior to drilling and will be discussed in the work plans. Discussions will include composition, source, placement, and gradation. If the actual gradation is to be determined during drilling, then more than one filter pack gradation will be on hand so that well installation will not be unnecessarily delayed. Granular filter packs will be visually free of material that would pass through a No. 200 (75- micrometer (µm)) sieve, inert, siliceous, composed of rounded grains, and of appropriate size for TETRA TECH, INC. Standard Operating Procedure Revision Date: 10/26/2022 Created by: Anthony Camacho Project name: Recycled Earth Page 10 of 15 the well screen and host environment. The filter material will be packaged in bags by the supplier and therein delivered to the site. 2.3.2 Bentonite Seal Bentonite is the only material that is allowed for sealing or as drilling mud under normal circumstances. This includes any form of bentonite (powders, granules, or pellets) intended for drilling mud, grout, seals, etc. Chips or pellets of an appropriate size depending on the annular space available will be used to form the well seal. If chips are used, they should be sieved to remove fine-grained material. Organic additives will not be used in drilling mud. An exception might be made for some high yield bentonites, to which the manufacturer has added a small quantity of polymer. The use of any bentonite will be discussed in the work plans. Bentonite will only be used if absolutely necessary to ensure that the borehole will not collapse or to improve cuttings removal. 2.3.3 Grout Grout, when used in monitor well construction or borehole/well abandonment, will be composed of Portland cement, bentonite (0-10% dry bentonite per 94-lb sack of dry cement), and a maximum 6 to 7 gallons of approved water per sack of cement. The amount of water per sack of cement required for a pumpable mix will vary with the amount of bentonite used. The amount of water used will be kept to a minimum. Neither additives nor borehole cuttings will be mixed with the grout. All grout materials will be combined in an aboveground rigid container or mixer, and mechanically (not manually) blended on-site to produce a thick, lump-free mixture throughout the mixing vessel. The mixed grout will be recirculated through the grout pump prior to placement. Grout will be placed using a grout pump and pipe/tremie. The grout pipe will be of rigid construction for vertical control of pipe placement. Drill rods, rigid PVC, or metal pipes are suggested stock for tremie pipes. If hoses or flexible plastics must be used, they may have to be TETRA TECH, INC. Standard Operating Procedure Revision Date: 10/26/2022 Created by: Anthony Camacho Project name: Recycled Earth Page 11 of 15 fitted with a length of steel pipe at the downhole end to keep the flexible material from curling and embedding itself into the borehole wall. This is especially true in cold weather when the coiled material resists straightening. Grout pipes will have side discharge. The side discharge will help to maintain the integrity of the underlying material (especially the bentonite seal). 2.4 Water Source To the extent practical, the use of drilling water will be held to a minimum. When water usage is deemed necessary, the source of any water used in drilling, grouting, sealing, filter placement, well installation, well decommissioning/abandonment, equipment washing, etc. will be approved prior to arrival of the drilling equipment on-site and specified in the work plans. If a suitable source exists on-site, that source will be used. The drilling subcontractor will have the responsibility to procure, transport, and store the water required for project needs in a manner to avoid the chemical contamination or degradation of the water once obtained. The drilling subcontractor will also be responsible for any heating, thermal insulation, or agitation of the water to maintain the water as a fluid for its intended uses. 2.5 Delivery, storage, and handling of materials Materials will be delivered to the site and stored in a secure area. Subcontractors are generally responsible for scheduling delivery and ordering those supplies pertaining to the installation of wells. An inventory will be kept to track the materials. Perishable materials will be covered with tarps and secured to prevent water damage. All materials will be handled in a safe manner and in accordance with health and safety protocols TETRA TECH, INC. Standard Operating Procedure Revision Date: 10/26/2022 Created by: Anthony Camacho Project name: Recycled Earth Page 12 of 15 3. WELL INSTALLATION 3.1 Preparation Every morning before entering the field, the field team and drilling subcontractor will meet to discuss the location and construction criteria for the day’s activities. The field geologist will also ensure that the drilling subcontractor obtains all necessary supplies for the day’s work (e.g., bentonite, Portland cement, and screen and riser), and has decontaminated all equipment and manmade construction materials to be used downhole (e.g., augers and PVC or stainless-steel screen and riser). All available areal data (e.g., borehole logs) should be reviewed to determine expected formation depths prior to the day’s drilling. 3.2 Documentation During any activities pertaining to well construction, abandonment, or development, the field geologist will note in the GEOLIS logbook the following information: Length of time required to perform all drill rig activities (e.g., overdrilling, well construction, abandonment/grouting, development times, and pumping rates). All well construction/abandonment supplies used (e.g., bentonite, Portland cement, filter sand, and screen/riser footage). Any difficulties in well construction, development, or abandonment. This information may be used to substantiate a change of scope or explain anomalous sampling data. Exact measurements (using a tape measure) of screen, end cap trap, and riser lengths. A completed well construction diagram. 4. WELL COMPLETION 4.1 Background Elements of well protection are intended to protect the monitoring well from physical damage, to prevent erosion and/or ponding in the immediate vicinity of the monitoring well, and to enhance TETRA TECH, INC. Standard Operating Procedure Revision Date: 10/26/2022 Created by: Anthony Camacho Project name: Recycled Earth Page 13 of 15 the validity of the water samples. The potential for physical damage is lessened by the installation of padlocked, protective iron/steel casing over the monitor well and iron/steel posts around the well (when needed for protection). The casing and posts will be new. The protective casing diameter or minimum dimension will be 2 in. greater than the nominal diameter of the monitor well, and the nominal length will be 5 ft. The concrete/cement filled posts will be at least 3 in. in diameter and the top modified to preclude the entry of water. Nominal length of the posts will be 6 ft. Special circumstances necessitating different materials will be addressed in the work plan. Erosion and/or ponding in the immediate vicinity of the monitoring well may be prevented by assuring that the ground surface slopes away from the monitor well protective casing by the installation of a 2-ft by 2-ft coarse gravel blanket around the well. Wells will contain a locking cover on the protective casing. The cover will be hinged or telescoped, but not threaded. All locks on these covers should be opened by a single key, if possible. 4.2 Aboveground well completion Aboveground wells will be completed as follows: Extend the well casing 2 to 3 feet above ground surface. Provide an end plug or casing cap for each well. Use a filtered vented cap or drill a small (0.125- inch) hole into the PVC riser just below the PVC cap or into the PVC cap to allow air circulation in the well. Shield the extended well casing with a carbon steel protective casing that is set over the well casing and cap and extends to a depth of 3 ft bgs. Grout the annular space between the borehole and the protective casing with cement/bentonite grout to a depth of 4 ft bgs. Fill the annular space between the well casing and the protective casing with pure sodium bentonite slurry to protect the well casing from frost heave. Construct a 2- by 2-foot by 4-inch coarse gravel blanket at the surface, sloped away from the protective casing. TETRA TECH, INC. Standard Operating Procedure Revision Date: 10/26/2022 Created by: Anthony Camacho Project name: Recycled Earth Page 14 of 15 Drill a small diameter hole (0.25- to 0.375-inch) in the protective casing (weep hole) near the top of the cement pad to allow for drainage and mark a survey location on the inner casing (mark with an indelible marker or cut a small notch in the PVC on the side toward the hinge). Install a lockable cap or lid on the protective casing. Mark the well number clearly on the protective casing cap using impact lettering. Install three 3-inch-diameter, concrete-filled steel guard posts, if directed to do so by the on-site geologist. The guard posts will be 6 feet in total length and installed radially from each well head. Recess the guard posts approximately 2 feet into the ground outside of the cement pad and set in concrete approximately 3 to 5 feet from the protective casing. Fill each guard post with concrete. All wells will be secured as soon as possible after drilling. Corrosion-resistant locks will be used for both flush and aboveground well assemblies. The locks must have extended shanks. 4.3 Flush-mounted well completion Groundwater monitoring wells will be completed aboveground at most locations. Where well stickup is of concern, the well will be completed as a flush mount, level with the ground surface. Flush-mounted wells will be completed as follows: Cut the casing 2 to 3 in. bgs and install a protective locking lid consisting of a cast iron valve box assembly or manhole cover. Center the lid assembly in a 3-foot-diameter concrete pad sloped away from the valve box. Provide a cap with a filtered vent for equilibrium and to prevent infiltration of surface water. Maintain a minimum of 1 foot of clearance between the casing top and the bottom of the valve box. Clearly mark the well number on the valve box lid and well casing using an impact-labeling method, and mark a surveying point on the inner casing. TETRA TECH, INC. Standard Operating Procedure Revision Date: 10/26/2022 Created by: Anthony Camacho Project name: Recycled Earth Page 15 of 15 5. MAINTENCE Wells need to be examined periodically (normally during sampling) to determine if they have been damaged, vandalized, or otherwise compromised, and to check for evidence of disintegration such as cracked casing, pads, or surface seals, and to check the security of the well (locked cap). Appendix E Field Forms DAILY REPORT Signature: Date: Page of Reviewed by: Project Name: Date of Site Activity: Project Number: Site Location: Weather: Contractors on-site working for Tetra Tech: Contractor's Employees: Contractor’s Equipment: Tetra Tech Employees: Odometer: / Tetra Tech Equipment: Calibrated Today? (Y/N) Visitors: =============================================================================== Objective/Scope of Work: Site Activity: Photograph Log Summary Form Project Name:Field Contact: Address:Telephone #: City:Event Due Date: Project Manager:Project Number: Field Resource: Type of Photo Equipment: Number Direction Description Page ___ of ___ NORTHING EASTING Material Codes: AG=Amber Glass; CG=Clear Glass; PE=polyethylene; WM=wide mouth; O=Other (Specify): __________________________________ Signature(s): _________________________________ Volume Preserv. Sample Container Specification Intended Analysis and/or Method Remarks: (color, odor, sand & silt content, factors possibly affecting samples; condition of sampling apparatus, etc.) No. Material Code Sampling Initiated (hrs):Sampling Ended (hrs):COC No.:COC Time:** Sample Type: C = Composite; D = Duplicate; G = Grab; P = Primary; other ______________________________ SOIL SAMPLING LOG Sampling Method/ Equipment:Decontamination Method:\ Sample ID Date Time Location (coordinates or description) Soil Description (USCS Classification, texture, color, biota, debris, sheens, odor, moisture, vertical changes, etc.)Sample Type** Project: Sample Notes Field Staff:Weather:Date: Task: Intended Analyses WATER QUALITY DATA SHEET SAMPLE LOCATION:SAMPLE ID NUMBER: CLIENT:PROJECT NAME:PROJECT NO.: PERSONNEL:DATE: WEATHER: FIELD INSTRUMENTS: GENERAL COMMENTS: (C°)(ms/cm)(mg/l)(S.U.)(mV)(NTU) SAMPLE TAKEN AT: _____:______FILTER USED? N/Y_________ TEMP TETRA TECH TIME VISUAL AND OLFACTORY OBSERVATIONS / NOTES pH ORP TURBSPECIFIC CONDUCTANCE O2