Loading...
HomeMy WebLinkAboutDERR-2024-006163 Chevron Environmental Management Company Additional Subsurface Investigation and Groundwater Monitoring Well Installation Report Chevron Site No. 377252 1917 West 1700 South Salt Lake City, Utah March 28, 2024 ADDITIONAL SUBSURFACE INVESTIGATION AND GROUNDWATER MONITORING WELL INSTALLATION REPORT This document is intended only for the use of the individual or entity for which it was prepared and may contain information that is privileged, confidential and exempt from disclosure under applicable law. Any dissemination, distribution or copying of this document is strictly prohibited. www.arcadis.com i 377352_Addtl Subsurface Investigation and MW Installation Report Additional Subsurface Investigation and Groundwater Monitoring Well Installation Report Chevron Site No. 377352 1917 West 1700 South Salt Lake City, Utah March 28, 2024 Prepared By: Prepared For: Arcadis U.S., Inc. Chevron Environmental Management Company 530 B Street, Suite 1000 San Diego, CA 92101 United States Phone: 858 278 2716 Fax: 619 234 4109 Our Ref: 30064298 ________________________________________ Jason Cristino Project Manager ________________________________________ Taura Nichols, P.E. No. 8568538-2202, Certified Consultant CC-0247 Principal Engineer ADDITIONAL SUBSURFACE INVESTIGATION AND GROUNDWATER MONITORING WELL INSTALLATION REPORT www.arcadis.com 377352_Addtl Subsurface Investigation and MW Installation Report ii Contents Acronyms and Abbreviations ................................................................................................................................ iv 1 Introduction ..................................................................................................................................................... 1 2 Site Description ............................................................................................................................................... 1 2.1 Site Description and Operational History ............................................................................................. 1 2.2 Site Investigative History ........................................................................................................................ 2 2.3 Site Topography, Geology, and Hydrogeology .................................................................................... 2 2.3.1 Site Topography and Land Use .......................................................................................................... 2 2.3.2 Regional and Site Geology ................................................................................................................. 3 2.3.3 Regional and Site Hydrogeology ....................................................................................................... 3 3 Pre-Field Activities .......................................................................................................................................... 3 3.1 Site-Specific Health and Safety Plan ..................................................................................................... 4 3.2 Permitting ................................................................................................................................................. 4 3.3 Utility Locating ......................................................................................................................................... 4 4 Field Activities ................................................................................................................................................. 4 4.1 Well Installation ....................................................................................................................................... 4 4.2 Soil Sampling Activities .......................................................................................................................... 5 4.3 Well Development .................................................................................................................................... 6 4.4 Groundwater Gauging and Sampling .................................................................................................... 6 4.5 Quality Assurance/Quality Control ........................................................................................................ 7 4.6 Well Survey .............................................................................................................................................. 7 4.7 Decontamination ...................................................................................................................................... 7 4.8 Investigation-Derived Waste .................................................................................................................. 7 5 Investigation Results ....................................................................................................................................... 7 5.1 Screening Criteria .................................................................................................................................... 7 5.2 Soil Results .............................................................................................................................................. 8 5.3 Groundwater Results .............................................................................................................................. 8 5.3.1 TPH Fractionation ................................................................................................................................ 9 5.3.2 TPH-DRO with Silica Gel Treatment .................................................................................................. 9 6 Summary ........................................................................................................................................................ 11 7 References ..................................................................................................................................................... 12 ADDITIONAL SUBSURFACE INVESTIGATION AND GROUNDWATER MONITORING WELL INSTALLATION REPORT www.arcadis.com 377352_Addtl Subsurface Investigation and MW Installation Report iii Tables Table 1 Soil Analytical Results – TPH and Volatile Organic Compounds Table 2 Soil Analytical Results – TPH Fractionation Table 3 Current Groundwater Gauging and Analytical Results – TPH and Volatile Organic Compounds Table 4 Historical Groundwater Gauging and Analytical Results Table 5 Groundwater Analytical Results – TPH Fractionation Table 6 Questar Test Pit Soil Data Table 7 Direct-Push Boring Soil Data Table 8 Direct-Push Boring Soil TPH Fractionation Data Table 9 Direct-Push Boring Groundwater Data Table 10 Direct-Push Boring Groundwater TPH Fractionation Data Figures Figure 1 Site Location Map Figure 2 Site Plan Figure 3 Groundwater Elevation Contour Map – October 31, 2023 Figure 4 Soil Analytical Map – November 10-12, 2020 and October 17-23, 2023 Figure 5 Groundwater Analytical Map - October 30-31 and November 1-3, 2023 Appendices Appendix A Regulatory Directives Appendix B Permits Appendix C Boring Logs Appendix D Well Sampling Forms Appendix E Survey Data Appendix F Waste Manifests Appendix G Laboratory Analytical Reports ADDITIONAL SUBSURFACE INVESTIGATION AND GROUNDWATER MONITORING WELL INSTALLATION REPORT www.arcadis.com 377352_Addtl Subsurface Investigation and MW Installation Report iv Acronyms and Abbreviations 1,2-DBA 1,2-dibromoethane 1,2-DCA 1,2-dichloroethane AST aboveground storage tank AECOM AECOM Technical Services Arcadis Arcadis U.S., Inc. bgs below ground surface btoc below top of casing BTEX benzene, toluene, ethylbenzene and total xylenes CEMC Chevron Environmental Management Company Chemtech-Ford Chemtech-Ford Laboratories COC/COCs constituent of concern/constituents of concern DERR Division of Environmental Response and Remediation DRO diesel range organics EDB ethylene dibromide, 1,2-dibromoethane EDC 1,2 dichloroethane GRO gasoline range organics HASP Health and Safety Plan ISL Utah DERR initial screening level ITRC Interstate Technology & Regulatory Council IDW investigation derived waste LDS Latter-Day Saints LUST leaking underground storage tank LNAPL light non-aqueous phase liquid MTBE methyl tert-butyl ether mg/kg milligrams per kilogram mg/L milligrams per liter NRCS National Resource Conservation Service NELAP National Environmental Laboratory Accreditation Program Pace Pace National Laboratories ADDITIONAL SUBSURFACE INVESTIGATION AND GROUNDWATER MONITORING WELL INSTALLATION REPORT www.arcadis.com 377352_Addtl Subsurface Investigation and MW Installation Report v PID photoionization detector PVC polyvinyl chloride Report Additional Subsurface Investigation and Groundwater Monitoring Well Installation Report RSLs regional screening levels ROW right-of-way Site Chevron Site No. 377352, located at 1917 West 1700 South, Salt Lake City, Utah TOC Total Organic Carbon TPH total petroleum hydrocarbons UDEQ Utah Department of Environmental Quality UDWR Utah Division of Water Rights USEPA United States Environmental Protection Agency UST underground storage tank VOA volatile organic analysis VOC volatile organic compound Work Plan Additional Subsurface Investigation and Groundwater Monitoring Well Installation Work Plan ADDITIONAL SUBSURFACE INVESTIGATION AND GROUNDWATER MONITORING WELL INSTALLATION REPORT www.arcadis.com 377352_Addtl Subsurface Investigation and MW Installation Report 1 1 Introduction On behalf of Chevron Environmental Management Company (CEMC), Arcadis U.S., Inc. (Arcadis) prepared this Additional Subsurface Investigation and Groundwater Monitoring Well Installation Report (Report) for Chevron Site No. 377352, located at 1917 West 1700 South in Salt Lake City, Utah (the Site; Figure 1). Utah Department of Environmental Quality (UDEQ), Division of Environmental Response and Remediation (DERR) has designated the Site as Release Site MKS and assigned the former underground storage tank (UST) facility as Facility Identification No. 4002428. This report is being submitted to UDEQ DERR to satisfy a directive for subsurface investigation to define the extent of subsurface petroleum hydrocarbon contamination in soil and groundwater. This report presents the results of monitoring well installation and soil and groundwater sampling activities conducted at the site between October 16 and November 3, 2023. Installation activities were completed in general accordance with the Additional Subsurface Investigation and Groundwater Monitoring Well Installation Work Plan (Work Plan; Arcadis 2021b) and the DERR directive letters dated March 15, 2021, and June 21, 2021 (Appendix A). A Site plan showing existing monitoring well locations and the new monitoring well locations is presented on Figure 2. 2 Site Description The following sections detail Site background information and general site information. 2.1 Site Description and Operational History The Site is located in an industrial area of Salt Lake City, Utah (Figure 1). According to lease records, the Site was developed as a gas station and service shop prior to approximately 1955 on the corner of 1700 South Street and Industrial Road. However, per a 1943 aerial photograph, the gas station and service shop were likely operating at that time. Per the historic lease information from 1957, inventory present at the Site included two 15,000-gallon USTs and one 30,000-gallon aboveground storage tank (AST) described as an “Oil Tank” on the 1950 Sanborn Fire Insurance Map (Sanborn Map Company 1950; EDR 2020). In addition, a review of historical records indicate that dispensers and USTs may have been located to the north of the former site building, the AST location was located west of the former service building in a secondary containment area, and that railroad tracks appear to have extended to the former site building. The gasoline station and shop activities reportedly ended prior to 1981, as the widening of 1700 South is noted and the site features appear to have been removed (1981 aerial photograph; Historic Aerials 2021). Some portions of the former Site are currently located in the public right-of-way (ROW) of 1700 South Street; the remaining portions of the Site are now on private property currently owned by Church of Jesus Christ Latter-Day Saints (LDS). The private property south of the former UST area currently operates as a Printing and Distribution Center, while the property north of the former UST area currently operates as a Thrift Store and Donation Center. Former and current site features are shown on Figure 2 and are based on a review of historical records presented by Arcadis in the previously submitted Subsurface Investigation Report (Arcadis 2021a). ADDITIONAL SUBSURFACE INVESTIGATION AND GROUNDWATER MONITORING WELL INSTALLATION REPORT www.arcadis.com 377352_Addtl Subsurface Investigation and MW Installation Report 2 2.2 Site Investigative History In 2008, Questar Gas excavated test pits in conjunction with planned utility work in the vicinity of the Site. Questar collected soil samples as part of their activities, and the test results indicated a potential petroleum hydrocarbon release; this release was reported to Utah DERR in October 2008. Utah DERR contracted AECOM Technical Services (AECOM) to perform an initial Site investigation in 2019. The soil and groundwater results from this Site investigation indicated the presence of petroleum hydrocarbons in soil and groundwater which exceeded Utah DERR’s leaking UST (LUST) initial screening levels (ISLs) for both total petroleum hydrocarbons (TPH) as gasoline range organics (GRO) and diesel range organics (DRO) (AECOM 2019). The extent of impacts was not defined during this initial site investigation, and it is noted that the impacts are off site and adjacent to adjoining properties. Results from the 2008 and 2019 investigations are presented in Tables 6 through 10. The approximate locations of the Questar Gas test pits are depicted on Figure 2. In November 2020, Arcadis installed four monitoring wells in the right-of-way of 1700 South and collected soil samples. Several soil sample results were identified with petroleum hydrocarbon impacts exceeding the Utah LUST ISLs. Free product (i.e. light non-aqueous phase liquid (LNAPL)) was observed in MW-1 during the December 2020 groundwater sampling event (Arcadis 2021a). In March 2021, Arcadis conducted an additional groundwater monitoring event and removed free product. Measurable LNAPL was detected in MW-1. Free product removal was conducted by bailing out the LNAPL. A total of 2.11 gallons of LNAPL and groundwater mixture was evacuated from well MW-1. An absorbent sock was installed at well MW-1 during the March 2021 event to continue recovery of LNAPL from the well (Arcadis 2021c). An additional groundwater gauging and free product removal event was conducted in September 2021. Measurable LNAPL, observed in MW-1, was removed via bailing. Approximately 6 gallons of LNAPL and groundwater mixture was removed from well MW-1. A two-stage absorbent sock assembly was deployed in MW-1 during the event to continue recovery of LNAPL. 2.3 Site Topography, Geology, and Hydrogeology 2.3.1 Site Topography and Land Use The Site topographically is relatively flat. The portion of the former Site that is located on the LDS Printing and Distribution Center property and the eastbound lanes of 1700 South Street consists of parking areas, sidewalks and landscaping. Access to this private property is provided from two entrances: one on the south side of 1700 South at approximately 1980 West and the other on the west side of the Site along Industrial Road (1900 West) at approximately 1720 South (AECOM 2019). The Site location and topography map is presented in Figure 1 and the detailed Site layout map, with former and current features, is presented in Figure 2. Historical land use in the immediate vicinity of the property has been commercial/industrial, and currently remains primarily commercial/industrial. Current uses in the immediate vicinity of the subject property are as follows:  North: 1700 South, and then warehouse and manufacturing buildings  South: Warehouse printing and distribution center  East: Industrial Road, and then warehouse and manufacturing buildings  West: Warehouse printing and distribution center ADDITIONAL SUBSURFACE INVESTIGATION AND GROUNDWATER MONITORING WELL INSTALLATION REPORT www.arcadis.com 377352_Addtl Subsurface Investigation and MW Installation Report 3 2.3.2 Regional and Site Geology The Site is located in the Salt Lake Valley, situated at the eastern boundary of the Basin and Range Physiographic Province. The Basin and Range Province is characterized by north-south trending normal fault systems that form down-faulted, sediment-filled valleys separated by uplifted mountain ranges (Stokes 1977; Utah Geological Survey 2021). Sediments eroded from the Wasatch and Oquirrh Mountains compose the Salt Lake Valley fill. These deposits are unconsolidated and consist of laminated to thick-bedded clay and silt interfingered with sand and gravel layers (Arnow et al 1970; Wallace and Lowe 2008). The uppermost valley fill material beneath the Site is primarily lacustrine in origin, consisting of unconsolidated sediments deposited into Lake Bonneville during the Quaternary Period (Marine and Price 1964). These lacustrine clays and silts generally have low permeabilities with higher permeabilities in coarser sandy layers. Soils at and near the Site have been mapped by the National Resource Conservation Service (NRCS) as Made Land and Lasil Silt Loam (NRCS 2019; AECOM 2019). The Site is underlain predominately by clay, with interbedded layers of silty clay, sandy clay, or sand. The subsurface geology observed at the Site to date consists of sandy silt, silty sand or clay sand mixed at times with concrete or asphalt aggregate to a depth of approximately 5 feet below ground surface (bgs). These soils are thought to be fill material associated with the roadway. Per recent investigations, underlying the fill material are layers of clay, silty or sandy clay, interbedded with layers of silty sand, clayey sand, and sand to a maximum depth of 20 feet bgs. 2.3.3 Regional and Site Hydrogeology Groundwater in the Salt Lake Valley generally occurs in a multi-aquifer system with shallow unconfined aquifers (i.e., approximately 50 feet bgs; Arnow et al 1970; Wallace and Lowe 2008), deep confined aquifers (i.e., greater than approximately 150 feet bgs; Wallace and Lowe 2008), and unconfined perched aquifers of limited extent. The major sources of groundwater recharge are mountain front alluvial fans along the Wasatch Range to the east, direct infiltration from precipitation, seepage from major rivers and streams, and irrigated areas. Deep confined aquifers are a primary source of water supply to communities in the valley. Groundwater in the Salt Lake Valley generally flows toward the northwest from recharge areas along the Wasatch Range to the Great Salt Lake (Hely et al 1971; Thiros 2003; Thiros and Manning 2004; Wallace and Lowe 2008). Based on a review of nearby LUST cases under Utah DERR oversight (located within 0.5-mile of the Site), local groundwater flow was estimated to be to the north, northwest, or northeast. During the 2019 investigation, groundwater was observed at approximately 6 to 10 feet bgs in soil borings (AECOM 2019). During the 2020 investigation, groundwater was initially observed at approximately 8 to 11 feet bgs (Arcadis 2021a). Depth to groundwater measurements during the March 5, 2021 sampling event, ranged from 4.40 feet below top of casing (btoc) (well MW-3) to 7.30 feet btoc (well MW-1), with groundwater elevations ranging from 4227.57 feet (MW-1) to 4229.69 feet (MW-3). The 2021 groundwater sampling event interpreted a southwest flow with a gradient of 0.015 feet per foot, though that interpretation was limited due to a small number of wells and the monitoring well network orientation (Arcadis 2021c). Updates on groundwater conditions based on the most recent investigation are presented in Section 4.4. 3 Pre-Field Activities This section discusses activities that were conducted prior to beginning assessment activities at the Site. ADDITIONAL SUBSURFACE INVESTIGATION AND GROUNDWATER MONITORING WELL INSTALLATION REPORT www.arcadis.com 377352_Addtl Subsurface Investigation and MW Installation Report 4 3.1 Site-Specific Health and Safety Plan As required by the Occupational Safety and Health Administration 29 Code of Federal Regulations 1910.120 (Hazardous Waste Operations and Emergency Responses), Arcadis prepared a site-specific Health and Safety Plan (HASP) addressing the health and safety issues related to field activities conducted at the Site. 3.2 Permitting Due to the anticipated depth to water, a well permit was not filed with Utah Division of Water Rights (UDWR) (i.e., a permit is required when the total depth of the well is at or exceeds 30 feet bgs). However, the monitoring wells were installed in accordance with the Utah Water Well Handbook (UDWR 2022). An encroachment permit (Permit to Work in the Public Way) from the Salt Lake City Corporation (Permit No. ENG2023-01318); additionally, the Salt Lake City Corporation Department of Public Utilities approved the project work in the right-of-way in an email dated October 12, 2023. Two traffic control permits (Permit No. TRN2023- 02038 and TRN2023-02504) were obtained from the Salt Lake City Community and Neighborhoods Division of Transportation. Copies of the permits are provided in Appendix B. All permitting agencies were notified before commencement of work, per their notification schedule. Utah Barricade provided traffic control for all activities in the right-of-way. 3.3 Utility Locating The proposed boring locations were marked with white paint prior to the work. On October 6, 2023, Blue Stakes of Utah 811 was contacted (ticket number C32790576) to notify companies with public utilities in the area of the proposed field activities. Additionally, private utility-locating company Ground Penetrating Radar Systems, LLC performed geophysical locating services on October 16 and 23, 2023 to locate and mark any additional subsurface utilities near the proposed well locations. 4 Field Activities This section discusses field activities conducted as part of the monitoring well installations, including soil boring advancement, monitoring well installation, decontamination of drilling and sampling equipment, and management of investigation-derived waste. All work was performed under the guidance of a Utah-licensed Professional Geologist. 4.1 Well Installation Ten wells (MW-5 through MW-14) were installed using a hollow stem auger drill rig operated by Cascade Drilling LLC (Utah Well Driller’s license # 626) of Salt Lake City, Utah from October 17 through 24, 2023. Installation activities were conducted under the oversight of an Arcadis Utah-Certified Soil and Groundwater Sampler and a licensed geologist. The first five feet of each location was advanced using a hand auger or air knife to clear the location for potential underground utilities prior to commencement of drilling. The locations of five monitoring wells (MW-5, MW-6, MW-7, MW-11, and MW-12) were adjusted slightly from proposed locations due to utility conflicts ADDITIONAL SUBSURFACE INVESTIGATION AND GROUNDWATER MONITORING WELL INSTALLATION REPORT www.arcadis.com 377352_Addtl Subsurface Investigation and MW Installation Report 5 and access issues. Due to observation of LNAPL in MW-12 the day after installation, conditionally proposed locations MW-13 and MW-14 were installed. When advancing each borehole, the drillers cored semi-continuously at each location using a split spoon sampler. From the continuous cores, soils were logged for lithologic properties including soil type, color and moisture content and photoionization detector (PID) readings were taken periodically. The soil types were described using the visual-manual Unified Soil Classification System in general accordance with ASTM International Method ASTM D2488-00, and soil color was determined using a Munsell soil chart. Soils were screened for the presence of volatile organic compounds with a photoionization detector (PID) at 5-foot intervals. Soil screening procedures involved measuring approximately 50 grams from a relatively undisturbed soil sample and placing this sample in a seam-sealing plastic bag. The plastic bag was exposed to sunlight for approximately 15 to 20 minutes to allow for volatilization; the headspace within the bag was then tested for total organic vapor and measured in parts per million. Observations were also noted if staining was visually observed. In addition, select soil samples were collected for laboratory analysis as described in Section 4.2. The soil boring log, including well construction information and PID results, is provided in Appendix C. Upon completion of drilling each boring, a well was installed using schedule 40 polyvinyl chloride (PVC), 0.010- inch slot size screen from approximately 5 to 20 feet bgs and schedule 40 PVC blank casing from 0 to 5 feet bgs. For well MW-6, the screen interval is approximately 4 to 19 feet bgs, while well MW-10 was screened 5-25 feet bgs. The annular space around the well was backfilled from approximately 3 to 20 feet (25 feet in the case of MW- 10) with 10/20 silica sand, followed by 2 feet of medium hydrated bentonite chips and lastly neat cement to ground surface. Flush mounted, traffic-rated steel well boxes with a concrete apron surround were installed and set at grade. Monitoring well locations are depicted on Figure 2. Well construction details are displayed on the boring logs in Appendix C. 4.2 Soil Sampling Activities Soil sampling was conducted during the well installation activities in accordance with Utah’s Groundwater and Soil Sampling Study Guide (UDEQ 2013) by a Utah-Certified Soil and Groundwater Sampler. At a minimum, one soil sample was intended to evaluate potential impacts at the capillary fringe and one was collected at the borehole terminus. In addition, a third soil sample was chosen at select locations based on elevated PID readings. Arcadis collected soil samples following United States Environmental Protection Agency (USEPA) Method 5035 guidelines. Soils were sampled using Terra Core® sample kits and placed into 40-milliliter preserved volatile organic analysis (VOA) vials supplied by the analytical laboratory. Soil samples were labeled, placed in sealed Ziploc® bags, immediately placed on ice in a chilled cooler, and transported to a National Environmental Laboratory Accreditation Program (NELAP)-certified analytical laboratory under chain-of-custody procedures. A total of thirty-one soil samples (including twenty-seven primary samples and three duplicates) were collected and analyzed for the following constituents:  TPH-GRO (carbon range C6-C12) by USEPA Method 8260B;  TPH-DRO with and without silica gel treatment (SGT) (carbon range C10-C28) and TPH as oil range organics (ORO) (carbon range C28-C40) by USEPA Method 8015;  Oil and grease by USEPA Method 9071B; ADDITIONAL SUBSURFACE INVESTIGATION AND GROUNDWATER MONITORING WELL INSTALLATION REPORT www.arcadis.com 377352_Addtl Subsurface Investigation and MW Installation Report 6  Benzene, toluene, ethylbenzene and total xylenes (BTEX), naphthalene, 1,2-dichloroethane (1,2-DCA or EDC), 1,2-dibromoethane (1,2-DBA or EDB) and methyl-tert butyl ether (MTBE) by USEPA Method 8260B; and  Total organic carbon (TOC) by Method USDA LOI (from select intervals). In addition, to assist with future risk assessment, six soil samples were also analyzed for TPH fractionation by USEPA Methods 8260D and 8270E. Samples were submitted to Pace National Laboratories (Pace) in Mount Juliet, Tennessee, with the exception of the soil samples for TPH fractionation analyses, which were submitted to Chemtech-Ford Laboratories (Chemtech-Ford) in Sandy, Utah. The results are discussed in section 5.2 and are summarized in Tables 1 and 2. 4.3 Well Development On October 26, 27, and 30, 2023, Cascade conducted well development at the newly installed wells to enhance the hydraulic connection with the surrounding water-bearing formation and to remove any fine-grained material from the well casing and the newly installed filter pack. The groundwater monitoring wells were developed using a stainless-steel bailer, surge block, and a submersible pump until depth to groundwater and water quality parameters (turbidity, temperature, specific conductivity, and pH) stabilized. 4.4 Groundwater Gauging and Sampling On October 30 through November 3, 2023, Arcadis conducted the initial groundwater sampling event at the Site in accordance with Utah’s Groundwater and Soil Sampling Study Guide (UDEQ 2013). Depth to groundwater measurements were collected on October 31, 2023. Depth to groundwater ranged from 4.53 feet btoc at MW-6 to 7.77 btoc at MW-1. Free product (i.e., light non-aqueous phase liquid [LNAPL]) was observed in monitoring wells MW-1, MW-2, MW-9, MW-10, and MW-12. Observed LNAPL thickness ranged from 0.34 feet at MW-9 to 1.14 feet at MW-2. LNAPL was pumped off to the extent possible before groundwater sampling began. For well MW- 12, LNAPL recharged too fast to allow for total removal before sampling, so a grab sample was collected from the middle of the water column. Groundwater samples were collected from the remainder of the wells using a peristaltic pump. Groundwater sampling was conducted by Bridger Cherry, a Utah-Certified soil and groundwater sampler. Field parameters, including pH, temperature, conductivity, dissolved oxygen and turbidity, were measured during the groundwater sampling stabilization measures. Groundwater samples were collected using laboratory-provided containers. Groundwater samples were labeled, placed in sealed Ziploc® bags, immediately placed on ice in a chilled cooler, and transported to a NELAP-certified analytical laboratory under chain-of-custody procedures. The samples were analyzed for the following constituents:  TPH-GRO by USEPA Method 8260B;  TPH-DRO with and without SGT and TPH-ORO by USEPA Method 8015;  Oil and grease by USEPA Method 1664A; and  BTEX, naphthalene, EDB, EDC, and MTBE by USEPA Method 8260B. ADDITIONAL SUBSURFACE INVESTIGATION AND GROUNDWATER MONITORING WELL INSTALLATION REPORT www.arcadis.com 377352_Addtl Subsurface Investigation and MW Installation Report 7 In addition, to assist with future risk assessment, three groundwater sample were also collected to be analyzed for TPH fractionation by USEPA Methods 8260D and 8270E. Samples were submitted to Pace in Mount Juliet, Tennessee, with the exception of the groundwater samples for TPH fractionation analyses, which were submitted to Chemtech-Ford in Sandy, Utah. Due to an administrative issue at Chemtech-Ford, two samples were not analyzed. These two will be recollected during the next groundwater sampling event. The results are discussed in section 5.3 and are summarized in Tables 3 and 4. 4.5 Quality Assurance/Quality Control Quality assurance procedures included decontamination of non-disposable equipment (e.g., split spoon samplers), use of disposable gloves, bailers, and pump tubing, care in sample collection, and proper chain-of- custody documentation. Quality control samples included trip blanks. 4.6 Well Survey On October 26, 2023, a licensed surveyor, EDM Partners, surveyed all monitoring well locations to top-of-casing elevations and horizontal locations. Wells were surveyed to 0.001-foot accuracy to a common benchmark, and referenced to the North American Data 1983, Utah State Plane Central Zone and North American Vertical Datum 1998. The survey data is included in Appendix E. 4.7 Decontamination Drilling and sampling equipment were pressure washed following the completion of each borehole. Decontamination of nondedicated or non-disposable field equipment was conducted using an Alconox® solution (or equivalent) and deionized water rinse. 4.8 Investigation-Derived Waste Investigation-derived waste (IDW) soil, groundwater and/or decontamination water generated during the field activities were containerized in a Department of Transportation approved roll-off bin and/or 55-gallon drums, labeled with their contents, and stored in a secure location prior to pickup. Waste characterization samples for soil cuttings and purged groundwater and LNAPL were collected on November 3, 2023 for laboratory analyses. Following completion of waste characterization and profiling, the bin and drums were transported off-site by an approved disposal contractor and properly disposed of at appropriate disposal facilities. The waste manifests are included in Appendix F. 5 Investigation Results 5.1 Screening Criteria Soil and groundwater sample results were compared to Utah LUST Initial and Tier 1 Screening Levels (UDEQ, 2005). Initial and Tier 1 SLs are summarized for soil and groundwater in Tables 1 and 3, respectively, and are described in the following sections. Neither groundwater nor soil samples exceeded the Tier 1 Screening Levels; ADDITIONAL SUBSURFACE INVESTIGATION AND GROUNDWATER MONITORING WELL INSTALLATION REPORT www.arcadis.com 377352_Addtl Subsurface Investigation and MW Installation Report 8 however, it was noted in the previous subsurface investigation report (Arcadis 2021a) that the presence of nearby buildings and subsurface utilities precludes the applicability of Tier 1 screening criteria to this release site. 5.2 Soil Results This section summarizes the results of the October 2023 soil sampling activities conducted as part of the subsurface investigation drilling activities. Soil samples collected contained detectable concentrations of TPH-GRO, TPH-DRO, oil and grease above the ISLs. Benzene, toluene, ethylbenzene, total xylenes, and naphthalene were either not detected or not detected above the ISLs. MTBE, EDB and EDC were not detected above the reporting limits in the soil samples analyzed and the reporting limit values were below that of the ISLs, where applicable. The TPH and volatile organic compound (VOC) constituent results are summarized in Tables 1 and 2 and presented on Figure 4. The following constituents were detected at concentrations exceeding the Utah LUST ISLs:  TPH-GRO was detected above the ISL of 150 milligrams per kilogram (mg/kg) in the soil sample from MW-7 at 6.0 to 6.5 feet bgs at a concentration of 188 mg/kg.  TPH-DRO was detected above the ISL of 500 mg/kg in six soil samples at concentrations ranging from 1,050 mg/kg at 5.5-6.5 ft bgs in MW-9 to 3,300 mg/kg at 5.0-6.5 ft bgs in MW-11. Noted exceedances of the ISL for TPH-DRO occurred in samples from shallower than 6.5 ft bgs.  TPH-DRO with SGT concentrations exceeding the ISL was detected in the same six samples with concentrations ranging from 773 mg/kg at 5.0-6.5 ft bgs in MW-10 to 2,580 mg/kg at 5-6 ft bgs in MW-8.  Oil and grease was detected above the ISL of 1,000 mg/kg in four samples at concentrations ranging from 1,080 mg/kg at 10.0-10.5 ft bgs in MW-13 to 2,400 mg/kg at 4.0-5.0 ft bgs in MW-9. Soil TPH fractions ISLs are not currently available. However, the USEPA provides regional screening levels (RSLs) for TPH aliphatic and aromatic fractions (USEPA 2020), which are located in Table 2 (as well as the 2019 data presented in Table 8). The RSLs are presented as low, medium and high aliphatic and aromatic fractions. The TPH fraction analytical data from the laboratory does not align with the screening levels. As a result, interpellation of the analytical data was performed consistent with the recommendation in the Interstate Technology & Regulatory Council (ITRC) TPH Risk Assessment guidance document (ITRC 2019). The aligned analytical results were above the residential RSLs but below the commercial RSLs for C13-C16 aliphatic hydrocarbons in the soil samples from 5.0-6.0 ft bgs and 10.0-10.75 ft bgs in MW-8 and the soil sample from 5.0- 6.5 ft bgs in MW-10. The aligned analytical results were below the residential and commercial RSLs for remaining components detected in the samples. Laboratory analytical results are included in Appendix G. 5.3 Groundwater Results This section summarizes the results of the October and November 2020 groundwater sampling activities. As mentioned in Section 4.4, LNAPL was observed in monitoring wells MW-1, MW-2, MW-9, MW-10, and MW-12. To evaluate dissolved groundwater conditions at these locations, sampling procedures involved removing LNAPL prior to purging or collecting a grab sample from the middle of the water column where LNAPL could not be sufficiently removed by practical means. ADDITIONAL SUBSURFACE INVESTIGATION AND GROUNDWATER MONITORING WELL INSTALLATION REPORT www.arcadis.com 377352_Addtl Subsurface Investigation and MW Installation Report 9 Groundwater elevations were calculated, based on the depth-to-water measurements, and a groundwater elevation contour figure is presented as Figure 3. Contouring of the groundwater elevations results in an interpreted groundwater flow direction to the northwest at a gradient of approximately 0.0049 feet per foot. Note that the groundwater elevation at monitoring wells MW-1, MW-2, MW-9, MW-10, and MW-12 is calculated assuming a specific gravity of 0.75. The groundwater samples collected during the sampling event contained detectable concentrations of TPH-GRO, TPH-DRO, TPH-ORO, oil and grease, BTEX, and/or naphthalene (depending on the sample). MTBE, EDB, and EDC were not detected, and the reporting limit values were below the respective ISLs. Several groundwater sample results were identified with petroleum hydrocarbon constituents of concern (COCs) exceeding the Utah ISLs. The TPH and VOC COC results are summarized in Tables 3 and 5 and presented on Figure 5. Historical groundwater results are provided in Table 4. The following constituents were detected at concentrations exceeding the Utah LUST ISLs:  TPH-GRO was detected above the ISL of 1.0 milligrams per liter (mg/L) in the groundwater samples at MW-4 [and the duplicate] and MW-5 at concentrations of 2.20 [2.82] mg/L and 1.57 mg/L, respectively.  TPH-DRO was detected above the ISL of 1.0 mg/L in seven groundwater samples, with concentrations ranging from 1.30 mg/L at MW-2 to 5.88 mg/L at MW-1. Results of TPH-DRO with SGT detected concentrations exceeding the ISL in five samples with concentrations ranging from 1.12 mg/L at MW-9 to 4.99 mg/L at MW-8.  Benzene was detected above the ISL of 0.005 mg/L in the groundwater sample at MW-2 at a concentration of 0.00644 mg/L. 5.3.1 TPH Fractionation Groundwater TPH fractionation ISLs are not currently available. However, the USEPA provides tap water RSLs for TPH aliphatic and aromatic fractions (USEPA 2020), which are located in Table 5 (as well as the 2019 data presented in Table 10). As with soil, the groundwater RSLs are presented as low, medium and high aliphatic and aromatic fractions. The TPH fraction analytical data from the laboratory does not align with the screening levels. As a result, interpretation of the analytical data was performed consistent with the recommendation in the ITRC TPH Risk Assessment guidance document (ITRC 2019). The aligned analytical results were above the tap water RSL for C9&C10 aliphatic hydrocarbons and C13-C16 aliphatic hydrocarbons (which are both medium aliphatic hydrocarbons). The aligned analytical results were below the tap water RSL for the other components detected in the sample. Laboratory analytical results are included in Appendix G. The TPH fractionation detections in MW-10 do not align with the data previously collected in 2019 and 2020, suggesting that well may have influence from a different source. Further sampling and analysis will be necessary to determine groundwater direction and plume geometries to suggest whether the difference in composition is from a different onsite source or if there are off-site influences as well. 5.3.2 TPH-DRO with Silica Gel Treatment The soil and groundwater samples collected during this monitoring event were analyzed for both TPH-DRO and TPH-DRO with SGT. SGT provides a way to determine whether TPH-DRO detected in soil and groundwater is related to petroleum hydrocarbons or is from a natural organic carbon source such as organic soils or polar byproducts from degradation of petroleum hydrocarbons present in the diesel that was historically released at the ADDITIONAL SUBSURFACE INVESTIGATION AND GROUNDWATER MONITORING WELL INSTALLATION REPORT www.arcadis.com 377352_Addtl Subsurface Investigation and MW Installation Report 10 Site. Polar byproducts from diesel degradation are unregulated and are considered less toxic to human health and the environment than the petroleum hydrocarbons from which they are derived (Zemo and Foote 2003; Zemo et al. 2013; Patterson et al. 2020). The Site is located in an industrial area where other sources of organic carbon may exist. Petroleum hydrocarbon products (e.g., crude oil and products derived from crude oil, including diesel fuel and motor oil) are complex mixtures consisting of hundreds to thousands of different compounds, including PAH and biomarker compounds (Wang and Stout 2007). The chemical composition of petroleum hydrocarbon products varies based on factors such as the crude oil source, refining processes, and weathering processes (e.g., volatilization, dissolution, and biological degradation). Because of the complex composition of petroleum hydrocarbon products, such as diesel fuel, analytical forensic or fingerprinting techniques (not performed for the site) have been developed to characterize petroleum hydrocarbons based on the molecular mass and structure of compounds. Analytical results and composition of hydrocarbons can then be used to identify the type(s) of hydrocarbons present, assess potential hydrocarbon source(s), and evaluate the extent of weathering (Stout et al. 2002). A primary technique used for identifying the presence or absence of diesel in groundwater samples is based on evaluation of TPH-DRO concentrations and chromatograms with and without SGT. The TPH-DRO analysis measures the sum of hydrocarbon compounds in the diesel range (C10 to C28) that can be extracted from a sample using a solvent (commonly hexane or methylene chloride). For samples analyzed for TPH-DRO for comparison to regulatory criteria, it is appropriate to include results using SGT. The TPH-DRO analysis (Method 8015B) is not specific to hydrocarbons unless SGT is used. For samples analyzed without SGT, the reported TPH-DRO concentration can include polar non-hydrocarbon compounds in addition to petroleum-related hydrocarbons that may be present in a water sample (Zemo and Foote 2003; Munzar et al. 2011; Zemo et al. 2013; Patterson et al. 2020). Various sources can contribute to measured TPH- DRO concentrations, including metabolites from biodegradation of petroleum (primarily alcohols and organic acids, with possible phenols, aldehydes, and ketones) and natural organic matter (Zemo and Foote 2003; Munzar et al. 2011; Mohler et al. 2020). Petroleum hydrocarbon degradation metabolites generally degrade quickly in aerobic environments downgradient of source areas (Zemo et al. 2015). Analysis of these polar compounds is complex and requires special analytical equipment and analytical techniques that generally are not available from commercial laboratories (Zemo et al. 2013; Patterson et al. 2020; O’Reilly et al. 2015; Mohler et al. 2020). At sites with biodegrading petroleum, a large fraction of the organic compounds being measured as TPH-DRO (without SGT) can be polar compounds and not dissolved petroleum hydrocarbons (Munzar et al. 2011; Zemo et al. 2013; Mohler et al. 2020). It has been established that SGT does not remove the dissolved hydrocarbons in a sample (Lundegard and Sweeney 2004). Further, the potential for removal of hydrocarbons by SGT is monitored as part of routine laboratory quality assurance reporting where laboratory control samples are spiked with a hydrocarbon (surrogate) and subjected to SGT, and recovery of the surrogate is measured and must be within acceptable ranges.  When comparing TPH-DRO with TPH-DRO with SGT concentrations for the site, the average percent reduction in soil samples is approximately 20 percent and in groundwater samples is 24 percent, indicating polar compounds and/or other carbon sources exist. The total organic carbon concentrations detected in the soil range between 820 mg/km and 14,700 mg/kg. ADDITIONAL SUBSURFACE INVESTIGATION AND GROUNDWATER MONITORING WELL INSTALLATION REPORT www.arcadis.com 377352_Addtl Subsurface Investigation and MW Installation Report 11 6 Summary Based on the results obtained from the subsurface investigation conducted in October and November 2023, concentrations of COCs observed in soil and groundwater are comparable to those reported in previous investigations. Concentrations of constituents in soil exceeding their respective ISLs are primarily limited to TPH-GRO, TPH- DRO (with and without SGT), and oil and grease, and those exceedances are located primarily around the footprint of the former corner service gas station building and former aboveground storage tank, with additional shallow exceedances in the parking lot of Deseret Industries Manufacturing to the northwest of the former buildings associated with the Site. Individual VOC constituents in soil were not detected above their respective ISLs. LNAPL is present in monitoring wells MW-1, MW-2, MW-9, MW-10, and MW-12, which, with the exception of MW- 2) are within and/or downgradient of the former AST. LNAPL was removed from the wells and dissolved phase groundwater concentrations were evaluated at each of these locations. TPH-DRO (with and without SGT) and benzene (MW-2 only) were detected above their respective ISL. For the wells in the vicinity of the former UST, concentrations exceeding their respective ISLs are primarily limited to TPH-GRO. Dissolved phase concentrations were evaluated in the wells where LNAPL was detected following LNAPL removal. Going forward, an evaluation of additional delineation needs will be performed, and access requirements associated with potential delineation will also be evaluated. A work plan will be prepared and presented to DERR for consideration. ADDITIONAL SUBSURFACE INVESTIGATION AND GROUNDWATER MONITORING WELL INSTALLATION REPORT www.arcadis.com 377352_Addtl Subsurface Investigation and MW Installation Report 12 7 References AECOM. 2019. Corner Service Subsurface Investigation Report, 1917 West 1700 South, Salt Lake City, Utah, Facility ID #4002428, Release ID MKS, Work Assignment MKS-2-AEC, December 16. Arcadis. 2021a. Subsurface Investigation Report, Chevron Site No. 377352, 1917 West 1700 South, Salt Lake City, Utah. February 12. Arcadis. 2021b. Additional Subsurface Investigation and Monitoring Well Installation Work Plan, CEMC Site No. 377352, 1917 West 1700 South, Salt Lake City, Utah, DERR Facility Identification 4002428, Release Site MKS. March 31. Arcadis. 2021c. March 2021 Groundwater Monitoring and Free Product Removal Report, CEMC Site No. 377352, 1917 West 1700 South, Salt Lake City, Utah, DERR Facility Identification 4002428, Release Site MKS. May 21. Arnow, T., R. Van Horn, and R. LaPray. 1970. The pre-Quaternary Surface in the Jordan Valley, Utah, in Geological Survey Research 1970, U.S. Geological Survey Professional Paper 700-D, p. D257-D261. Hely, A.G., R.W. Mower, and C.A. Harr. 1971. Water Resources of Salt Lake County, Utah, Utah Department of Natural Resources Technical Publication, No. 31, 244 p. Historic Aerials. 2021 https://www.historicaerials.com/viewer/191889#. February. ITRC 2019. Interstate Technology Regulatory Council: TPH Risk Evaluation at Petroleum Contaminated Sites. October. Available at https://tphrisk-1.itrcweb.org/ Lundegard, P.D. and R.E. Sweeney. 2004. Total petroleum hydrocarbons in groundwater: Evaluation of non- dissolved and nonhydrocarbon fractions. Environmental Forensics 5:85-95. Mohler, R., S. Ahn, K. O’Reilly, D. Zemo, C. Espino Devine, R. Magaw, and N. Sihota. 2020. Towards comprehensive analysis of oxygen containing organic compounds in groundwater at a crude oil spill site using GCˣGC-TOFMS and Orbitrap ESI-MS. Chemosphere 224(2020):125504.  Munzar, S., D. Zemo, R. North, and J. Mair. 2011. Occurrence of Polar Organic Compounds in Groundwater Resulting from Biodegradation – Implication for Petroleum Site Investigations and Remediation. Remediation Technologies Symposium 2011, Banff, Alberta. October.  NRCS. 2019. National Resource Conservation Service Web Soil Survey. http://websoilsurvey.nrcs.usda.gov/app , accessed November 2018. O‘Reilly, K., R. Mohler, D. Zemo, S. Ahn, A. Tiwary, R. Magaw, C. Espino Devine, K. Synowiec. 2015. Identification of ester metabolites from petroleum hydrocarbon biodegradation in groundwater using GCˣGC-TOFMS. Environmental Toxicology and Chemistry 34(9):1959-1961.  Patterson, T., L. Kristofco, A. Tiwary, R. Magaw, D. Zemo, K. O’Reilly, R. Mohler, S. Ahn, N. Sihota, and C. Espino Devine. 2020. Human and aquatic toxicity potential of petroleum biodegradation metabolite mixtures in groundwater from fuel release sites. Environmental Toxicology and Chemistry 39(8):1634- 1645.  2023-05 Closure Request and GWMR.docxSAIC. 2010b. Multi-Phase Extraction Pilot Test Results Report. Former Chevron Terminal #129-0350. 2464 Pennsylvania Avenue, Ogden, Utah. January 31. Sanborn Map Company. 1950. Salt Lake City, Salt Lake, Utah, 1950. Sanborn Library LLC. ADDITIONAL SUBSURFACE INVESTIGATION AND GROUNDWATER MONITORING WELL INSTALLATION REPORT www.arcadis.com 377352_Addtl Subsurface Investigation and MW Installation Report 13 Stokes, W.L. 1977. Subdivisions of the Major Physiographic Provinces in Utah, Utah Geology, Volume 4, No. 1, p. 1-17. Stout, S.A., A.D. Uhler, K.J. McCarthy, and S.D. Emsbo-Mattingly. 2002. Chemical fingerprinting of hydrocarbons, In: B. L. Murphy and R. D. Morrison, eds., Introduction to Environmental Forensics. Academic Press, Boston, pp.137-260.  Thiros, S.A. 2003. Hydrogeology of shallow basin-fill deposits in areas of Salt Lake Valley, Salt Lake County, Utah, U.S. Geological Survey Water-Resources Investigations Report 03-4029, 23 p. Thiros, S.A. and A.H. Manning. 2004. Quality and Sources of Ground-water Used for Public Supply in Salt Lake Valley, Salt Lake County, Utah, U.S. Geological Survey Water-Resources Investigations Report 03-4325, 95 p. USEPA. 2020. Regional Screening Levels. (https://semspub.epa.gov/work/HQ/400431.pdf) UDEQ. 2005. Utah Department of Environmental Quality, Division of Emergency Response and Remediation. Initial and Tier I Screening Levels November 2005. (http://www.undergroundtanks.utah.gov/docs/cleanupLevels.pdf) UDEQ. 2013. Utah Groundwater & Soil Sampling Study Guide. June (www.undergroundtanks.utah.gov) http://www.undergroundtanks.utah.gov/docs/cleanupLevels.pdf Utah Division of Water Rights (UDWR). 2022. State of Utah Water Well Handbook. July. Utah Geological Survey. 2021. https://geology.utah.gov/popular/general-geology/utah-landforms/physiographic- provinces/ Wallace, J. and M. Lowe. 2008. Ground-Water Quality Classification for the Principal Basin-Fill Aquifer, Salt Lake Valley, Salt Lake County, Utah. Wang, Z., and S.A. Stout. 2007. Oil Spill Environmental Forensics: Fingerprinting and Source Identification, Z. Wang and S.A. Stout, Eds., Academic Press, New York.  Zemo, D. and G. Foote. 2003. The technical case for eliminating the use of the TPH analysis in assessing and regulating dissolved petroleum hydrocarbons in ground water. Ground Water Monitoring & Remediation 23(3):95-104.  Zemo, D., K. O’Reilly, R. Mohler, A. Tiwary, R. Magaw, and K. Synowiec. 2013. Nature and estimated human toxicity of polar metabolite mixtures in groundwater quantified as TPHd/DRO at biodegrading fuel release sites. Groundwater Monitoring & Remediation 33(4):44-56. Zemo, D., K. O’Reilly, R. Mohler, R. Magaw, C. Espino Devine, S. Ahn, and A. Tiwary. 2015. Life cycle of petroleum biodegradation metabolite plumes, and implications for risk management at fuel release sites. Integrated Environmental Assessment and Management 13(4):714-727.  Tables Table 1 Soil Analytical Results - TPH and Volatile Organic Compounds Chevron Site No. 377352 1917 West 1700 South Salt Lake City, Utah TPH-GRO (mg/kg) TPH-DRO (mg/kg) TPH-DRO w/SGT (mg/kg) TPH-ORO (mg/kg) OIL & GREASE (mg/kg) Benzene (mg/kg) Toluene (mg/kg) Ethylbenzene (mg/kg) Total Xylenes (mg/kg) MTBE (mg/kg) Naph (mg/kg) EDB (mg/kg) EDC (mg/kg) Total Solids (%) TOC (Total Organic Carbon) (mg/kg) Utah DERR Initial Screening Level 150 500 500 --1,000 0.2 9 5 142 0.3 51 -------- 1,500 5,000 5,000 --10,000 0.9 25 23 142 0.3 51 -------- 11/11/2020 8.8-10.0 73.0 2,430 --153 549 0.0178 J <0.192 0.0526 B 0.0435 B J <0.0384 2.89 <0.0384 <0.0384 79.2 6,070 11/11/2020 11.2-12.5 83.1 3,110 --407 1,350 0.0325 J <0.173 0.0469 B 0.0394 B J <0.0346 3.72 <0.0346 <0.0346 85.7 -- 11/11/2020 8.7-10.0 208 226 --12.0 447 0.152 <0.220 0.0557 B 0.0569 B J <0.0439 4.09 <0.0439 <0.0439 73.3 -- 11/11/2020 11.2-12.5 360 405 --<4.93 56.7 J 0.0980 J <0.777 0.0701 B J 0.102 B J <0.155 3.74 <0.155 <0.155 81.2 -- 11/12/2020 5.0-6.2 --------------------------76.6 4,000 11/12/2020 6.2-7.5 52.8 142 --23.2 <124 <0.0382 <0.191 <0.0382 <0.115 <0.0382 <0.191 <0.0382 <0.0382 80.9 -- 11/12/2020 8.7-10.0 18.1 J 38.4 --4.62 B J <126 <0.0384 <0.192 <0.0384 <0.115 <0.0384 <0.192 <0.0384 <0.0384 -- 11/10/2020 8.5-9.5 58.4 25.0 --57.1 121 J <0.0466 <0.233 <0.0466 <0.139 <0.0466 <0.233 <0.0466 <0.0466 82.1 -- 11/10/2020 10.5-11.5 52.1 199 --391 70.8 <0.0445 <0.222 <0.0445 <0.133 <0.0445 <0.222 <0.0445 <0.0445 83.1 -- 10/24/2023 10-10.75 1.63 J 13.1 J3 12.4 J3 <4.85 96.7 J <0.00147 <0.00735 <0.00367 <0.00955 <0.00147 <0.0184 <0.00367 <0.00367 82.4 5,850 10/24/2023 20-21.5 3.58 J <5.12 <5.12 4.01 J 89.2 J 0.00548 <0.00799 <0.00400 <0.0104 <0.00160 <0.0200 <0.00400 <0.00400 78.1 4,140 MW-5 (DUP)10/24/2023 20-21.5 1.99 J <4.98 <4.98 3.31 J 135 0.00357 0.00236 J <0.00376 <0.00978 <0.00150 <0.0188 <0.00376 <0.00376 80.3 3,870 10/21/2023 3.5-4 0.843 B J 3.93 J <4.70 7.54 82.2 JP1 <0.00141 <0.00705 <0.00353 <0.00917 <0.00141 <0.0176 <0.00353 <0.00353 85.2 3,890 10/21/2023 5.0-6.0 2.20 B J 3.93 J 3.93 J 3.56 J 173 <0.00158 <0.00791 <0.00396 <0.0103 <0.00158 <0.0198 <0.00396 <0.00396 79.3 2,070 10/21/2023 20-21 0.800 J 3.31 J 3.31 J 3.49 J 84.0 J <0.00145 <0.00727 <0.00364 <0.00946 <0.00145 <0.0182 <0.00364 <0.00364 82.6 820 10/23/2023 6.0-6.5 188 221 161 56 688 <0.0129 <0.0647 <0.0323 <0.0841 <0.0129 <0.162 <0.0323 <0.0323 78.9 4,440 10/23/2023 20.0-21.0 <4.00 2.08 J 2.08 J 2.79 J 138 <0.00160 <0.00801 <0.00400 <0.0104 <0.00160 <0.0200 <0.00400 <0.00400 78.9 3,200 MW-7 (DUP)10/23/2023 20.0-21.0 <4.07 5.08 J 5.08 J 3.63 J 75.6 J <0.00163 <0.00813 <0.00407 <0.0106 <0.00163 <0.0203 <0.00407 <0.00407 78.8 3,730 10/23/2023 5.0-6.0 25.9 2,810 2,580 18.5 J 501 <0.0128 <0.0639 0.0864 0.0296 J <0.0128 1.59 <0.0320 <0.0320 79.4 4,080 10/23/2023 10.0-10.75 33.5 279 264 5.23 1,190 0.00145 <0.00709 0.0117 0.00598 J <0.00142 0.172 <0.00354 <0.00354 84.1 2,290 10/23/2023 21.0-21.5 5.05 B 4.94 J 2.68 J 7.34 78.2 J <0.00169 <0.00847 <0.00424 <0.0110 <0.00169 <0.0212 <0.00424 <0.00424 76.4 5,640 10/20/2023 4.0-5.0 124 B 1,190 1,070 4.48 J 2,440 0.0165 0.0186 J 0.0394 0.0485 J <0.0120 12.9 <0.0299 <0.0299 81.0 8,370 10/20/2023 5.5-6.5 93.0 B 1,050 1,060 29.5 J 673 0.00714 J <0.0669 0.0135 J <0.0870 <0.0134 4.4 <0.0335 <0.0335 77.1 6,190 10/20/2023 20.0-21.5 2.03 B J 6.37 4.75 J 2.00 J 151 <0.00165 <0.00824 <0.00412 <0.0107 <0.00165 0.0275 <0.00412 <0.00412 77.8 1,360 10/19/2023 5.0-6.5 44.6 1,090 773 11.4 439 0.00137 J <0.00877 0.00249 J 0.00825 J <0.00175 0.239 <0.00439 <0.00439 75.2 5,300 10/19/2023 10-11.5 1.81 B J 51.6 42.4 16.4 150 <0.00142 <0.00708 <0.00354 <0.00921 <0.00142 <0.0177 <0.00354 <0.00354 84.2 4,470 10/19/2023 20.0-21.5 3.63 B J 3.01 J 3.01 J 4.04 J 122 J <0.00182 <0.00912 <0.00456 <0.0119 <0.00182 <0.0228 <0.00456 <0.00456 72.0 4,260 10/19/2023 23.5-25 1.98 B J 2.19 J 2.19 J 1.32 J 143 <0.00150 <0.00749 <0.00374 <0.00973 <0.00150 <0.0187 <0.00374 <0.00374 82.8 1,900 MW-10 (DUP)10/19/2023 23.5-25 1.94 B J 2.37 J 2.37 J 2.20 J 108 J <0.00148 <0.00742 <0.00371 <0.00965 <0.00148 <0.0185 <0.00371 <0.00371 82.6 2,000 10/18/2023 5.0-6.5 29.8 3,300 2,120 304 1,420 0.00664 0.0212 0.0403 0.109 <0.00142 0.259 <0.00356 <0.00356 84.5 14,700 10/18/2023 15.5-16.5 1.50 J <5.66 <5.66 1.70 J 96.4 J <0.00187 <0.00933 <0.00467 <0.0121 <0.00187 0.0145 J <0.00467 <0.00467 70.6 7,510 10/18/2023 20-21.5 4.30 J 30.5 26.8 10.8 57.5 J <0.00194 <0.00968 0.0224 <0.0126 <0.00194 <0.0242 <0.00484 <0.00484 68.2 7,500 10/17/2023 2.0-3.0 2.50 B J 2.32 J <5.07 7.52 <127 0.000936 J 0.00567 J <0.00398 0.00341 J <0.00159 <0.0199 <0.00398 <0.00398 79.0 5,890 10/17/2023 5.0-6.0 47.0 238 183 5.84 134 <0.00158 <0.00792 0.00228 J 0.0124 <0.00158 0.342 <0.00396 <0.00396 79.8 4,700 10/17/2023 20.0-21.0 2.30 J 15.3 14.1 8.76 62.2 J <0.00158 0.00330 J 0.0130 0.0103 <0.00158 0.0152 J <0.00394 <0.00394 78.9 3,020 10/20/2023 10.0-10.5 2.47 B J <244 <244 542 1,080 <0.00147 0.0116 <0.00368 0.00731 J <0.00147 0.0111 J <0.00368 <0.00368 82.0 6,090 10/20/2023 15.0-16.25 3.58 B J <5.58 <5.58 2.62 J 232 <0.00207 <0.0103 <0.00517 <0.0134 <0.00207 <0.0258 <0.00517 <0.00517 71.7 4,690 10/20/2023 21.5-23 1.09 B J 4.39 J 4.39 J 4.99 J 138 <0.00159 <0.00793 <0.00396 <0.0103 <0.00159 <0.0198 <0.00396 <0.00396 78.9 2,440 10/18/2023 5.5-6.5 30.8 2,840 1,330 26.9 J 472 <0.00164 <0.00818 0.00740 0.00391 J <0.00164 <0.0205 <0.00409 <0.00409 78.1 4,160 10/18/2023 20.0-21.5 <4.36 11.1 8.86 3.73 J 77.7 J <0.00174 <0.00872 <0.00436 <0.0113 <0.00174 <0.0218 <0.00436 <0.00436 75.4 4,340 Notes: ID = Identification MW = Groundwater monitoring well ft = Feet TPH-DRO = Total petroleum hydrocarbons, diesel range organics(C10-C28) by GC according to USEPA Method 8015 Bold = Concentrations exceeds DERR ISL.TPH-ORO = Total petroleum hydrocarbons, oil range organics (C28-C40) by GC according to USEPA Method 8015 = Values Highlighted Grey Exceed Tier 1 SL.TPH - Oil & Grease = Total Petroleum hydrocarons, oil & grease by Method 9071B mg/kg = Milligrams per kilogram Analytes by USPEA Method 8260B/8260B/OA1: < = Analyte was not detected above the specified reported detection limit (RDL)MTBE = Methyl tertiary-butyl ether VOCs = Volatile Organic Compounds Naph = Naphthalene J = Estimated Value between the MDL and RDL EDB = 1,2-Dibromoethane -- = Not analyzed EDC = 1,2-Dichloroethane B = The same analyte is found in the associated blank Total Solids by Method 2540 G-2011 TOC (Total Organic Carbon) by Method USDA LOI SGT = Silica Gel Treatment J3 = The associated batch QC was outside the established quality control range for precision. TPH and VOCs Sample Depth (ft) MW-1 MW-2 MW-3 Well ID Date MW-13 Tier 1 Screening Level MW-7 MW-10 TPH-GRO = Total petroleum hydrocarbons, gasoline range organics (C6-C12) by GC according to United States Environmental Protection Agency (USEPA) Method 8260B/8260B/OA1 MW-4 MW-6 MW-8 MW-5 MW-14 MW-9 MW-11 MW-12 Table 1 Arcadis Page 1 of 10 Table 2 Soil Analytical Results - TPH Fractionation Chevron Site No. 377352 1917 West 1700 South Salt Lake City, Utah NA NA NA NA NA NA NA NA NA NA Residential 2,400 Commercial 30,000 11/11/2020 8.8-10.0 <1.23 6.23 6.23 35.1 48.9 68.9 153 120 14.5 135 38.8 14.5 53.3 2.86 11/11/2020 11.2-12.5 <1.04 7.82 7.82 37.4 52.8 80.5 171 110 21.7 132 41.0 12.5 53.5 3.23 11/11/2020 8.7-10.0 <1.37 27.9 27.9 39.0 11.3 16.2 66.5 35.0 5.33 40.3 25.1 2.78 27.9 0.55 11/11/2020 11.2-12.5 <1.32 45.6 45.6 43.5 23.5 33.40 100 57.0 4.51 61.5 28.2 5.30 33.5 0.89 11/12/2020 5.0-6.2 ---------------------------- 11/12/2020 6.2-7.5 <0.303 3.47 3.47 20.0 7.89 12.5 40.4 11.2 3.41 14.6 1.93 <0.453 1.93 <0.453 11/12/2020 8.7-10.0 <0.0226 1.57 1.57 14.4 14.6 21.9 50.9 20.5 3.27 23.8 0.48 <0.426 0.48 <0.426 11/10/2020 8.5-9.5 <1.18 82.5 82.5 89.5 2.00 3.88 95.4 0.85 2.69 3.54 9.03 <0.403 9.03 <0.403 11/10/2020 10.5-11.5 1.44 67.5 68.9 24.3 2.48 4.38 31.2 6.31 <0.409 6.31 5.62 <0.409 5.62 <0.409 10/23/2023 5.0-6.0 <3.18 <3.18 <3.18 5.40 0.90 333 339 156 342 498 4.06 <0.25 4.06 6.05 10/23/2023 10.0-10.75 <3.02 <3.02 <3.02 5.61 0.52 195 201 3,090 182 3,272 <3.02 <0.24 <3.02 0.75 10/19/2023 5.0-6.5 <3.16 <3.16 <3.16 6.05 0.62 192 199 74.7 185 260 <3.16 <0.25 <3.16 0.83 10/19/2023 20.0-21.5 <3.50 <3.50 <3.50 <3.50 0.41 0.52 0.93 3.61 6.16 9.77 <3.50 <0.28 <3.50 <0.28 10/17/2023 5.0-6.5 <3.14 <3.14 <3.14 3.45 0.43 19.6 23.48 7.68 23.20 30.9 <3.14 <0.25 <3.14 <0.25 10/17/2023 20.0-21.5 <3.25 <3.25 <3.25 <3.25 0.43 1.98 2.41 2.26 6.08 8.34 <3.25 <0.26 <3.25 <0.26 Notes: ID = Identification MW = Groundwater monitoring well ft = Feet USEPA RSL = US Environmental Protection Agency Regional Screening Level = Values Highlighted Grey Exceed an USEPA RSL Bold = Concentrations exceeds laboratory reporting limit (RL) mg/kg = Milligrams per kilogram < = Analyte was not detected above the specified reported detection limit (RDL) TPH = Total petroleum hydrocarbon PAH = Poly Aromatic Hydrocarbon Analytes by Method SW8260D and SW8270E -- = Not applicable USEPA RSLs are for range TPH aromatic or aliphatic carbon range: low, medium and high available at https://semspub.epa.gov/work/HQ/400431.pdf Concentrations within the range are added together for screening purposes. Example- MW-1-S 8.8-10.0 aliphatic medium ((35.1 + 48.9 + 68.9 = 152.9 mg/kg) which is less than the commercial RSL of 440 mg/kg). Low aromatic evaluated through BTEX (benzene, toluene, ethylbenzene, xylenes) detections 3,500,000 560 520 Medium Aromatics (mg/kg) MW-1-S 97 2,200 96 440 230,000 MW-2-S MW-3-S MW-4-S Well ID USEPA RSL Date Utah DERR Initial Screening Level Sample Depth (ft) USEPA RSL MW-8-S MW-10-S MW-12-S Total C12-C22 PAH Summation (High Aromatics) (mg/kg) C5&C6 Aliphatic Hydrocarbons (mg/kg) C7&C8 Aliphatic Hydrocarbons (mg/kg) C9&C10 Aliphatic Hydrocarbons (mg/kg) C9&C10 Alkyl Benzenes (mg/kg) C11-C12 Aliphatic Hydrocarbons (mg/kg) C11-C13 Alkyl Naphthalenes (mg/kg) C13-C16 Aliphatic Hydrocarbons (mg/kg) C17-C21 Aliphatic Hydrocarbons (mg/kg) C22-C35 Aliphatic Hydrocarbons (mg/kg) Low Aliphatic (mg/kg) Medium Aliphatic (mg/kg) High Aliphatic (mg/kg) Table 2 Arcadis Page 2 of 10 Table 3 Current Groundwater Gauging and Analytical Results - TPH and Volatile Organic Compounds Chevron Site No. 377352 1917 West 1700 South Salt Lake City, Utah TPH-GRO (mg/L) TPH-DRO (mg/L) TPH-DRO w/SGT (mg/L) TPH-ORO (mg/L) OIL & GREASE (mg/L) Benzene (mg/L) Toluene (mg/L) Ethylbenzene (mg/L) Total Xylenes (mg/L) MTBE (mg/L) Naph (mg/L) EDB (mg/L) EDC (mg/L) 1 1 1 --10 0.005 1 0.7 10 0.2 0.7 ---- 10 10 10 --10 0.300 3 4.0 10 0.2 0.7 ---- MW-1 10/31/2023 4233.95 7.77 6.70 1.07 4226.98 0.283 5.88 4.83 0.155 B 5.24 J 0.00456 <0.00100 0.000499 J 0.000323 J <0.00100 0.0877 <0.00100 <0.00100 MW-2 10/31/2023 4234.00 7.67 6.53 1.14 4227.19 0.363 1.30 0.720 0.224 B <5.68 0.00644 0.000372 J 0.000382 J <0.00300 <0.00100 0.0172 <0.00100 <0.00100 MW-3 11/1/2023 4233.86 6.33 ND ND 4227.53 0.445 0.793 0.519 <0.100 <6.17 0.000535 J <0.00500 0.00179 J <0.0150 <0.00500 <0.0250 <0.00500 <0.00500 MW-4 11/1/2023 4233.78 5.93 5.93 0.00 4227.85 2.20 0.704 0.447 B 0.0831 B J <6.17 0.000740 J <0.00500 0.0171 <0.0150 <0.00500 <0.0250 <0.00500 <0.00500 MW-4 (DUP)11/1/2023 ----------2.82 0.687 0.539 0.0531 B J <5.26 0.000571 J 0.000711 J 0.0191 0.000661 J <0.00100 0.00181 J <0.00100 <0.00100 MW-5 11/3/2023 4234.19 6.53 6.53 0.00 4227.66 1.57 0.625 0.304 0.131 <5.81 0.000487 J 0.000413 J 0.0174 0.00198 J <0.00100 0.00728 <0.00100 <0.00100 MW-6 11/2/2023 4231.81 4.53 4.53 0.00 4227.28 0.134 0.196 B 0.0350 BJ 0.220 B <5.88 <0.00100 <0.00100 <0.00100 <0.00300 <0.00100 <0.00500 <0.00100 <0.00100 MW-7 11/3/2023 4234.32 6.89 ND ND 4227.43 0.0901 J 0.157 0.546 J 0.0879 J <6.25 <0.00100 <0.00100 <0.00100 <0.00300 <0.00100 0.00122 J <0.00100 <0.00100 MW-8 11/3/2023 4234.30 6.82 6.82 0.00 4227.48 0.100 J 2.35 0.561 0.557 <5.56 0.00121 <0.00100 0.00274 0.000204 J <0.00100 0.0161 <0.00100 <0.00100 MW-9 11/1/2023 4233.91 6.98 6.64 0.34 4227.19 0.110 1.96 1.12 0.214 B <6.10 0.000345 J <0.00100 <0.00100 <0.00300 <0.00100 0.0198 <0.00100 <0.00100 MW-10 10/31/2023 4233.64 7.02 6.40 0.62 4227.09 0.140 5.25 4.99 0.0841 B J 1.95 J 0.000543 J <0.00100 0.000717 J 0.000927 J <0.00100 0.0580 <0.00100 <0.00100 MW-11 10/30/2023 4233.87 6.94 6.94 0.00 4226.93 0.108 2.38 1.51 0.257 B <5.56 0.00118 <0.00100 <0.00100 <0.00300 <0.00100 0.0136 <0.00100 <0.00100 MW-12 11/2/2023 4233.52 7.50 6.70 0.80 4226.62 0.119 2.02 1.49 0.330 B <5.56 0.00154 <0.00100 0.000288 J 0.000689 J <0.00100 0.0480 <0.00100 <0.00100 MW-13 11/2/2023 4233.71 6.83 6.83 0.00 4226.88 0.0365 J 0.516 0.164 B 0.289 B <5.81 <0.00100 <0.00100 <0.00100 <0.00300 <0.00100 <0.00500 <0.00100 <0.00100 MW-14 11/2/2023 4234.21 7.53 7.53 0.00 4226.68 0.0601 J 0.474 0.160 B 0.289 B <5.56 <0.00100 <0.00100 <0.00100 <0.00300 <0.00100 <0.00500 <0.00100 <0.00100 Notes: ID = Identification MW = Groundwater monitoring well TOC = Top of casing (surveyed to a relative datum; MW-1 = 4234 ft relative elevation)TPH-DRO = Total petroleum hydrocarbons, diesel range organics (C10-C28) by GC according to USEPA Method 8015 ft bTOC = Feet below top of casing TPH-ORO = Total petroleum hydrocarbons, oil range organics (C28-C40) by GC according to USEPA Method 8015 DTW = Depth to Water TPH - Oil & Grease = Total Petroleum hydrocarbons, oil & grease by Method 1664A LNAPL = Light non-aqueous phase liquid Individual VOCs by USPEA Method 8260B GWE = Calculated groundwater elevation MTBE = Methyl tertiary-butyl ether Bold = Concentrations exceeds DERR ISL.Naph = Naphthalene = Values Highlighted Grey Exceed Tier 1 SL.EDB = 1,2-Dibromoethane mg/L = Milligrams per liter EDC = 1,2-Dichloroethane < = Analyte was not detected above the specified reported detection limit (RDL)GWE = (TOC-DTW) + (Specific Gravity x LNAPL thickness), specific gravity was assumed to be 0.75 B = The same analyte is found in the associated blank. SGT = Silica Gel Treatment J = Estimated Value between the MDL and RDL 1 LNAPL thickness measurements of 0.00 indicate a sheen was observed, that was unmeasurable; a value of ND indicates no LNAPL was observed. VOCs = Volatile Organic Compounds ND = Not detected TPH-GRO = Total petroleum hydrocarbons, gasoline range organics (C6-C12) by GC according to United States Environmental Protection Agency (USEPA) Method 8260B/8260B/OA1 Tier 1 SL DTW (ft-btoc) LNAPL Thickness (feet)1 Well ID GWE (feet)Date TOC (ft) TPH and VOCsDepth to LNAPL (ft-btoc) Utah DERR Initial Screening Level Table 3 Arcadis Page 3 of 10 Table 4 Historical Groundwater Gauging and Analytical Results - TPH and Volatile Organic Compounds Chevron Site No. 377352 1917 West 1700 South Salt Lake City, Utah TPH-GRO (mg/L) TPH-DRO (mg/L) TPH-DRO w/SGT (mg/L) TPH-ORO (mg/L) OIL & GREASE (mg/L) Benzene (mg/L) Toluene (mg/L) Ethylbenzene (mg/L) Total Xylenes (mg/L) MTBE (mg/L) Naph (mg/L) EDB (mg/L) EDC (mg/L) 1 1 1 --10 0.005 1 0.7 10 0.2 0.7 ---- 10 10 10 --10 0.300 3 4.0 10 0.2 0.7 ---- MW-1 12/10/2020 4234.19 8.32 6.75 1.57 4227.05 -------------------------- MW-1 3/5/2021 4234.19 7.30 6.39 0.91 4227.57 -------------------------- MW-1 9/28/2021 4234.19 7.57 6.29 1.28 4227.58 -------------------------- MW-1 10/31/2023 4233.95 7.77 6.70 1.07 4226.98 0.283 5.88 4.83 0.155 B 5.24 J 0.00456 <0.00100 0.000499 J 0.000323 J <0.00100 0.0877 <0.00100 <0.00100 MW-2 12/10/2020 4234.15 6.72 ND NA 4227.43 0.634 1.37 --<0.100 1.700 J 0.0152 0.00122 0.00174 0.00108 J <0.001 0.0824 <0.001 <0.001 MW-2 3/5/2021 4234.15 6.18 ND NA 4227.97 0.838 [0.822]2.140 [2.260]--0.0764 J [0.0853 J]<5.56 [1.0 J]0.0124 [0.0121]0.00123 [0.00118] 0.00202 [0.00191] 0.00109 J [0.00106 J] <0.001 [<0.001] 0.0892 [0.0949] <0.001 [<0.001] <0.001 [<0.001] MW-2 9/28/2021 4234.15 6.13 ND NA 4228.02 -------------------------- MW-2 10/31/2023 4234.01 7.67 6.53 1.14 4226.34 0.363 1.3 0.720 0.224 B <5.68 0.00644 0.000372 J 0.000382 J <0.00300 <0.00100 0.0172 <0.00100 <0.00100 MW-3 12/10/2020 4234.09 5.94 ND NA 4228.15 <2.500 1 0.818 B --<0.100 <6.100 0.0148 <0.005 0.00155 J <0.015 <0.005 0.0772 <0.005 <0.005 MW-3 3/5/2021 4234.09 4.40 ND NA 4229.69 <2.500 1 1.080 --<0.100 <5.88 <0.005 <0.005 <0.005 <0.015 <0.005 <0.025 <0.005 <0.005 MW-3 9/28/2021 4234.09 4.19 ND NA 4229.90 -------------------------- MW-3 11/1/2023 4233.86 6.33 ND NA 4227.53 0.445 0.793 0.519 <0.1 <6.17 0.000535 J <0.00500 0.00179 J <0.0150 <0.00500 <0.0250 <0.00500 <0.00500 MW-4 12/10/2020 4234.08 5.62 ND NA 4228.46 1.710 J 0.822 B --0.132 B <6.580 0.000893 J <0.005 0.00312 0.00102 J <0.005 0.0611 J <0.005 <0.005 MW-4 3/5/2021 4234.08 5.20 ND NA 4228.88 <2.500 1 1.37 --0.758 <5.56 0.000565 J <0.005 0.00772 <0.015 <0.005 0.00511 J <0.005 <0.005 MW-4 11/1/2023 4233.78 5.93 5.93 0.00 4227.85 2.2 0.704 0.447 B 0.0831 B J <6.17 0.000740 J <0.00500 0.0171 <0.0150 <0.00500 <0.0250 <0.00500 <0.00500 MW-4 (DUP)11/1/2023 ----------2.82 0.687 0.539 0.0531 B J <5.26 0.000571 J 0.000711 J 0.0191 0.000661 J <0.00100 0.00181 J <0.00100 <0.00100 MW-5 11/3/2023 4234.19 6.53 6.53 0.00 4227.66 1.57 0.625 0.304 0.131 <5.81 0.000487 J 0.000413 J 0.0174 0.00198 J <0.00100 0.00728 <0.00100 <0.00100 MW-6 11/2/2023 4231.81 4.53 4.53 0.00 4227.28 0.134 0.196 B 0.0350 BJ 0.22 B <5.88 <0.00100 <0.00100 <0.00100 <0.00300 <0.00100 <0.00500 <0.00100 <0.00100 MW-7 11/3/2023 4234.32 6.89 ND ND 4227.43 0.0901 J 0.157 0.546 J 0.0879 J <6.25 <0.00100 <0.00100 <0.00100 <0.00300 <0.00100 0.00122 J <0.00100 <0.00100 MW-8 11/3/2023 4234.30 6.82 6.82 0.00 4227.48 0.1 J 2.35 0.561 0.557 <5.56 0.00121 <0.00100 0.00274 0.000204 J <0.00100 0.0161 <0.00100 <0.00100 MW-9 11/1/2023 4233.91 6.98 6.64 0.34 4226.93 0.11 1.96 1.12 0.214 B <6.10 0.000345 J <0.00100 <0.00100 <0.00300 <0.00100 0.0198 <0.00100 <0.00100 MW-10 10/31/2023 4233.64 7.02 6.40 0.62 4226.62 0.14 5.25 4.99 0.0841 B J 1.95 J 0.000543 J <0.00100 0.000717 J 0.000927 J <0.00100 0.058 <0.00100 <0.00100 MW-11 10/30/2023 4233.87 6.94 6.94 0.00 4226.93 0.108 2.38 1.51 0.257 B <5.56 0.00118 <0.00100 <0.00100 <0.00300 <0.00100 0.0136 <0.00100 <0.00100 MW-12 11/2/2023 4233.52 7.50 6.70 0.80 4226.02 0.119 2.02 1.49 0.33 B <5.56 0.00154 <0.00100 0.000288 J 0.000689 J <0.00100 0.048 <0.00100 <0.00100 MW-13 11/2/2023 4233.71 6.83 6.83 0.00 4226.88 0.0365 J 0.516 0.164 B 0.289 B <5.81 <0.00100 <0.00100 <0.00100 <0.00300 <0.00100 <0.00500 <0.00100 <0.00100 MW-14 11/2/2023 4234.21 7.53 7.53 0.00 4226.68 0.0601 J 0.474 0.160 B 0.289 B <5.56 <0.00100 <0.00100 <0.00100 <0.00300 <0.00100 <0.00500 <0.00100 <0.00100 Notes: ID = Identification TPH-GRO = Total petroleum hydrocarbons, gasoline range organics (C6-C12) by GC according to United States Environmental Protection Agency (USEPA) Method 8260B/OA1 MW = Groundwater monitoring well TPH-DRO = Total petroleum hydrocarbons, diesel range organics (C10-C28) by GC according to USEPA Method 8015 TOC = Top of casing (surveyed to a relative datum; MW-1 = 4234 ft relative elevation)TPH-ORO = Total petroleum hydrocarbons, oil range organics (C28-C40) by GC according to USEPA Method 8015 ft bTOC = Feet below top of casing TPH - Oil & Grease = Total Petroleum hydrocarbons, oil & grease by Method 1664A DERR = Division of Environmental Response and Remediation Individual VOCs by USPEA Method 8260B/OA1 DTW = Depth to Water MTBE = Methyl tertiary-butyl ether LNAPL = Light non-aqueous phase liquid Naph = Naphthalene GWE = Calculated groundwater elevation EDB = 1,2-Dibromoethane J = Estimated Value between the MDL and RDL EDC = 1,2-Dichloroethane VOCs = Volatile Organic Compounds GWE = (TOC-DTW) + (Specific Gravity x LNAPL thickness), specific gravity was assumed to be 0.75 NA = Not applicable 1 TPH-GRO reportlng limits (RLs) were elevated in samples from MW-3 and MW-4 in both December 2020 and March 2021 due to dliution required during sample analysis. Method detection ND = Not detected limit (MDL), however, was 0.540 mg/L, and any detections of TPH-GRO would have been reported as an estimated value (i.e., J-flagged) for detections between the MDL and RL. Bold = Concentrations exceeds DERR ISL.SGT - Silica Gel Treatment = Values Highlighted Grey Exceed Tier 1 SL.2 LNAPL thickness measurements of 0.00 indicate a sheen was observed, that was unmeasurable; a value of ND indicates no LNAPL was observed. mg/L = Milligrams per liter < = Analyte was not detected above the specified reported detection limit (RDL) [ ] = duplicate sample Tier 1 SL GWE (feet) TPH and VOCs Utah DERR Initial Screening Level Well ID Date TOC (ft) DTW (ft-btoc) Depth to LNAPL (ft-btoc) LNAPL Thickness (feet)2 Table 1 Arcadis Page 4 of 10 Table 5 Groundwater Analytical Results - TPH Fractionation Chevron Site No. 377352 1917 West 1700 South Salt Lake City, Utah NA NA NA NA NA NA NA NA NA NA 0.080 MW-2 12/10/2020 0.0258 0.103 0.129 <0.020 <0.00955 <0.00955 <0.020 <0.00955 <0.00955 <0.00955 0.0926 0.130 0.223 <0.00955 MW-3 12/10/2020 <0.0200 0.401 0.401 0.0731 <0.00966 <0.00966 0.0731 <0.00966 <0.00966 <0.00966 0.131 0.0187 0.150 <0.00966 MW-4 12/10/2020 0.433 0.623 1.056 0.0420 <0.00955 <0.00955 0.0420 <0.00955 <0.00955 <0.00955 0.228 0.0123 0.240 <0.00955 MW-10 10/31/2023 <0.125 <0.125 <0.125 0.2990 0.054 0.149 0.2990 0.140 0.415 0.555 <0.125 <0.010 <0.125 0.016 Notes: ID = Identification MW = Groundwater monitoring well = Values Highlighted Grey Exceed an USEPA RSL Bold = Concentrations exceeds laboratory method detection limit (MDL) ug/L = Micrograms per liter < = Analyte was not detected above the specified reporting limit (RL) USEPA RSL = US Environmental Protection Agency Regional Screening Level https://semspub.epa.gov/work/HQ/400431.pdf TPH = Total petroleum hydrocarbon PAH = Poly Aromatic Hydrocarbon Analytes by Method SW8260D and SW8270E Low aromatic evaluated through BTEX (benzene, toluene, ethylbenzene, xylenes) detections 0.005560 Medium Aromatics (mg/L) Initial Screening Level Well ID Date C5&C6 Aliphatic Hydrocarbons (mg/L) USEPA Tap Water RSL C7&C8 Aliphatic Hydrocarbons (mg/L) 1.300 Low Aliphatic (mg/L) 0.100 Total C12-C22 PAH Summation (High Aromatics) (mg/L) C9&C10 Aliphatic Hydrocarbons (mg/L) C9&C10 Alkyl Benzenes (mg/L) C22-C35 Aliphatic Hydrocarbons (mg/L) C11-C13 Alkyl Naphthalenes (mg/L) C13-C16 Aliphatic Hydrocarbons (mg/L) C17-C21 Aliphatic Hydrocarbons (mg/L) C11-C12 Aliphatic Hydrocarbons (mg/L) Medium Aliphatic (mg/L) High Aliphatic (mg/L) Table 4 Arcadis Page 5 of 10 Table 6 Questar Test Pit Soil Data Chevron Site No. 377352 1917 West 1700 South Salt Lake City, Utah TPH-GRO (mg/kg) TPH-DRO (mg/kg) OIL & GREASE (mg/kg) Benzene (mg/kg) Toluene (mg/kg) Ethylbenzene (mg/kg) Total Xylenes (mg/kg) MTBE (mg/kg) Naph (mg/kg) 150 500 1,000 0.2 9 5 142 0.3 51 1,500 5,000 10,000 0.9 25 23 142 0.3 51 Test Pit 10/9/2008 10-09-08-01 < 6 ----1,100 ------------ Test Pit 10/9/2008 10-09-08-02 < 6 ----570 ------------ Test Pit 10/9/2008 10-09-08-03 < 6 ----1,200 ------------ Test Pit 10/9/2008 10-09-08-04 < 6 310 ---------------- Test Pit 10/9/2008 10-09-08-05 < 6 410 ---------------- Test Pit 10/9/2008 10-09-08-06 < 6 81 ---------------- Test Pit 10/9/2008 10-09-08-07 < 6 ------<0.061 <0.12 3.1 0.48 <0.12 1.3 Test Pit 10/9/2008 10-09-08-08 < 6 ------<0.061 <0.12 3.4 0.46 <0.12 1.9 Test Pit 10/9/2008 10-09-08-09 < 6 ----<0.060 <0.12 2.9 0.44 <0.12 1.4 Test Pit 10/9/2008 10-09-08-10 < 6 --910 -------------- Test Pit 10/9/2008 10-09-08-11 < 6 --1,500 -------------- Test Pit 10/9/2008 10-09-08-12 < 6 --260 -------------- from Table Provided by UDEQ/DERR Notes: ft bgs = Feet below ground surface mg/kg = milligrams per kilogram = Values Highlighted Grey Exceed Initial Screening Levels Bold = Values in Bold Exceed Initial Screening Levels < = Analyte was not detected above the specified method reporting limit TPH = Total Petroleum Hydrocarbon VOCs = Volatile Organic Compounds TPH-GRO = Total Petroleum Hydrocarbons-Gasoline Range Organics TPH-DRO = Total Petroleum Hydrocarbons-Diesel Range Organics MTBE = Methyl tert-butyl ether Naph = Naphthalene -- = Not available Initial Screening Level Tier 1 Screening Level TPH and VOCs Sample Location Date Sample Identification Sample Depth (ft bgs) Table 5 Arcadis Page 6 of 10 Table 7 Direct-Push Boring Soil Data Chevron Site No. 377352 1917 West 1700 South Salt Lake City, Utah TPH-GRO (mg/kg) TPH-DRO (mg/kg) OIL & GREASE (mg/kg) Benzene (mg/kg) Toluene (mg/kg) Ethylbenzene (mg/kg) Total Xylenes (mg/kg) MTBE (mg/kg) Naph (mg/kg) 150 500 1,000 0.2 9 5 142 0.3 51 1,500 5,000 10,000 0.9 25 23 142 0.3 51 B-1 9/25/2019 B-1-SO-0708 7-8 312 3.21 J 241 <0.255 <1.27 <0.255 <0.764 <0.255 <1.27 B-2 9/25/2019 B-2-SO-0910 9-10 87.2 1.99 J 82.9 J <0.119 <0.593 <0.119 0.0935 J <0.119 <0.593 B-3 9/25/2019 B-3-SO-0809 8-9 748 2,630 566 0.0396 J <0.605 <0.121 <0.363 <0.121 3.29 from Pace National Lab Report - L1143603 - 10-9-2019 Notes: B = Direct push boring location ft bgs = Feet below ground surface mg/kg = milligrams per kilogram Bold = Values in Bold Exceed Initial Screening Levels = Values Highlighted Grey Exceed Initial Screening Levels < = Analyte was not detected above the specified method reporting limit J = estimated value, the result is greater than the Method Detection Limit and less than the Reported Detection Limit TPH = Total Petroleum Hydrocarbon VOCs = Volatile Organic Compounds TPH-GRO = Total Petroleum Hydrocarbons-Gasoline Range Organics TPH-DRO = Total Petroleum Hydrocarbons-Diesel Range Organics MTBE = Methyl tert-butyl ether Naph = Naphthalene TPH and VOCs Tier 1 Screening Level Initial Screening Level Sample Location Date Sample Identification Sample Depth (ft bgs) Table 6 Arcadis Page 7 of 10 Table 8 Direct-Push Boring Soil TPH Fractionation Data Chevron Site No. 377352 1917 West 1700 South Salt Lake City, Utah 2,400 30,000 B-1 11/1/2019 B-1-SO-0708 7-8 0.0312 15.3 15.3 10.5 6.21 8.08 24.79 7.23 <0.425 7.23 1.36 <0.425 1.36 <0.425 B-2 11/1/2019 B-2-SO-0910 9-10 0.29 1.83 2.1 2.11 16.9 15.5 34.51 15.3 4.14 19.44 0.543 <0.430 0.543 <0.430 B-3 11/1/2019 B-3-SO-0809 8-9 3.54 8.20 11.7 9.79 93.3 239 342.09 184 22 206.00 3.43 18.3 21.7 4.74 from Pace National Lab Report - L1157876 - 11-13-2019 and AWAL Lab Report 1911014 - 11-08-2019 Notes: B = Direct push boring location ft bgs = Feet below ground surface mg/kg = milligrams per kilogram = Values Highlighted Grey Exceed an USEPA RSL Bold = Values in Bold Exceed MDLs USEPA RSLs are for range TPH aromatic or aliphatic carbon range: low, medium and high available at https://semspub.epa.gov/work/HQ/400431.pdf < = Analyte was not detected above the specified method reporting limit TPH = Total Petroleum Hydrocarbons PAH = Poly Aromatic Hydrocarbon Concentrations within the range are added together for screening purposes. Example- B-1 aliphatic medium ((10.5 + 6.21 + 8.08 = 24.79 mg/kg) which is less than both the residential and commercial RSLs of 96 mg/kg and 440 mg/kg respectively). Low aromatic evaluated through BTEX (benzene, toluene, ethylbenzene, xylenes) detections USEPA RSL Commercial C5&C6 Aliphatic Hydrocarbons (mg/kg) Low Aliphatic (mg/kg) Medium Aliphatic (mg/kg) High Aliphatic (mg/kg) 2,200 520 96 440 230,000 3,500,000 USEPS RSL Residential C11-C12 Aliphatic Hydrocarbons (mg/kg) Date Sample Identification Sample Depth (ft bgs) Sample Location C13-C16 Aliphatic Hydrocarbons (mg/kg) C17-C21 Aliphatic Hydrocarbons (mg/kg) C22-C35 Aliphatic Hydrocarbons (mg/kg) C7&C8 Aliphatic Hydrocarbons (mg/kg) C9&C10 Aliphatic Hydrocarbons (mg/kg) 97 560 Total C12-C22 PAH Summation (High Aromatics) (mg/kg) C11-C13 Alkyl Naphthalenes (mg/kg) C9&C10 Alkyl Benzenes (mg/kg) Medium Aromatics (mg/kg) Table 7 Arcadis Page 8 of 10 Table 9 Direct-Push Boring Groundwater Data Chevron Site No. 377352 1917 West 1700 South Salt Lake City, Utah TPH-GRO (mg/L) TPH-DRO (mg/L) OIL & GREASE (mg/L) Benzene (mg/L) Toluene (mg/L) Ethylbenzene (mg/L) Total Xylenes (mg/L) MTBE (mg/L) Naph (mg/L) 1 1 10 0.005 1 0.7 10 0.2 0.7 10 10 10 0.3 3 4 10 0.2 0.7 B-1 9/25/2019 B-1-GW-0812 8-12 2.04 1.17 <5.15 0.00183 0.00232 0.0211 0.00288 J <0.001 0.00906 B-2 9/25/2019 B-2-GW-1014 10-14 0.218 J 0.915 <5.15 <0.001 <0.001 <0.001 <0.003 <0.001 0.00293 J B-3 9/25/2019 B-3-GW-1014 10-14 0.517 1.05 <5.00 0.0015 <0.001 <0.001 <0.003 <0.001 0.00501 from Pace National Lab Report - L1143603 - 10-9-2019 Notes: B = Direct push boring location ft bgs = Feet below ground surface mg/L = milligrams per liter Bold = Values in Bold Exceed Initial Screening Levels < = Analyte was not detected above the specified method reporting limit J = estimated value, the result is greater than the Method Detection Limit and less than the Reported Detection Limit TPH = Total Petroleum Hydrocarbon VOCs = Volatile Organic Compounds TPH-GRO = Total Petroleum Hydrocarbons-Gasoline Range Organics TPH-DRO = Total Petroleum Hydrocarbons-Diesel Range Organics MTBE = Methyl tert-butyl ether Naph = Naphthalene TPH and VOCs Tier 1 Screening Level Initial Screening Level Sample Location Date Sample Identification Sample Depth (ft bgs) Table 8 Arcadis Page 9 of 10 Table 10 Direct-Push Boring Groundwater TPH Fractionation Data Chevron Site No. 377352 1917 West 1700 South Salt Lake City, Utah NA NA NA NA NA NA NA NA NA NA 0.080 B-1 11/1/2019 B-1-GW-0812 8-12 0.0211 0.076 0.097 <0.020 <0.00968 <0.00968 <0.020 <0.00968 <0.00968 <0.00968 0.158 0.0246 0.183 <0.00968 B-2 11/1/2019 B-2-GW-1014 10-14 <0.020 <0.020 <0.020 <0.020 <0.00969 <0.00969 <0.020 <0.00969 <0.00969 <0.00969 <0.020 <0.00969 <0.020 <0.00969 B-3 11/1/2019 B-3-GW-1014 10-14 <0.020 0.141 0.141 <0.020 <0.00968 <0.00968 <0.020 <0.00968 <0.00968 <0.00968 <0.020 <0.00968 <0.020 <0.00968 from Pace National Lab Report - L1143603 - 10-9-2019 Notes: B = Direct push boring location ft bgs = Feet below ground surface mg/L = milligrams per liter = Values Highlighted Grey Exceed an USEPA RSL Bold = Values in Bold Exceed MDL USEPA RSL = US Environmental Protection Agency Regional Screening Level https://semspub.epa.gov/work/HQ/400431.pdf < = Analyte was not detected above the specified method reporting limit TPH = Total Petroleum Hydrocarbons PAH = Poly Aromatic Hydrocarbon Analytes by Method SW8260D and SW8270E Low aromatic evaluated through BTEX (benzene, toluene, ethylbenzene, xylenes) detections 0.0055 Low Aliphatic (mg/L) Medium Aliphatic (mg/L) High Aliphatic (mg/L) Medium Aromatics (mg/L) C17-C21 Aliphatic Hydrocarbons (mg/L) C22-C35 Aliphatic Hydrocarbons (mg/L) 1.300 0.100 60 Total C12-C22 PAH Summation (High Aromatics) (mg/L) Initial Screening Level USEPA Tap Water RSL C11-C13 Alkyl Naphthalenes (mg/L) C11-C12 Aliphatic Hydrocarbons (mg/L) Sample Location Date Sample Identification Sample Depth (ft bgs) C5&C6 Aliphatic Hydrocarbons (mg/L) C7&C8 Aliphatic Hydrocarbons (mg/L) C9&C10 Aliphatic Hydrocarbons (mg/L) C9&C10 Alkyl Benzenes (mg/L) C13-C16 Aliphatic Hydrocarbons (mg/L) Table 9 Arcadis Page 10 of 10 Figures REFERENCE:BASE MAP USGS 7.5. MIN. TOPO. QUAD., SALT LAKE CITY SOUTH AND SALT LAKE CITY NORTH, UTAH, 2020 APPROXIMATE SCALE : 1 in. = 2,000 ft. 0 2,000'4,000' N SITE LOCATION MAP CHEVRON SITE NO. 377352 1917 WEST 1700 SOUTH SALT LAKE CITY, UTAH 1 FIGURE CI T Y : ( R e q d ) D I V / G R O U P : ( R e q d ) D B : ( R e q d ) L D : ( O p t ) P I C : ( O p t ) P M : ( R e q d ) T M : ( O p t ) L Y R : ( O p t ) O N = * ; O F F = * R E F * C: \ U s e r s \ f m i 0 0 8 4 1 \ B I M 3 6 0 \ A r c a d i s \ A N A - C H E V R O N C O R P O R A T I O N \ P r o j e c t F i l e s \ 3 7 7 3 5 2 - S a l t L a k e C i t y \ 2 0 2 0 \ 3 0 0 6 4 2 9 8 \ 0 1 - D W G \ 4 Q 2 0 2 0 - F I G 0 1 - S L M . d w g L A Y O U T : 1 S A V E D : 1/ 6 / 2 0 2 1 1 1 : 5 0 A M A C A D V E R : 23 . 1 S ( L M S T E C H ) P A G E S E T U P : -- - - P L O T S T Y L E T A B L E : PL T F U L L . C T B P L O T T E D : 1/ 1 6 / 2 0 2 1 5: 0 4 A M B Y : MO H D , F A R H A N U L L A H SITE LOCATION UTAH AREA LOCATION © 2023 Microsoft Corporation © 2022 Maxar ©CNES (2022) Distribution Airbus DS WA L L A C E R O A D 1700 SOUTH IN D U S T R I A L R O A D IN D U S T R I A L R O A D CHURCH MW-2 MW-3MW-1 MW-4 B-1 B-2 B-3 MW-6 MW-5 MW-7MW-8 MW-9 MW-10 MW-12 MW-11 MW-14MW-13 SITE PLAN LEGEND: CI T Y : I R V I N E , C A D I V / G R O U P : E N V C A D D B : J . H A R R I S , E . M U R E S A N L D : E M U R E S A N P I C : M . F L E I S C H N E R P M : A . H O O K T M : G . R A Y M O N D C: \ U s e r s \ k m 7 6 8 5 \ D C \ A C C D o c s \ A r c a d i s A C C U S \ A U S - 9 9 9 9 9 9 9 9 - C H E V _ 3 7 7 3 5 2 _ S A L T L A K E C I T Y _ U T \ P r o j e c t F i l e s \ 1 0 _ W I P \ 1 0 T _ A R C _ E N V \ 2 0 2 4 \ 0 1 - D W G \ G E N - F 0 2 - S I T E P L A N . d w g L A Y O U T : 2 S A V E D : 1/ 1 9 / 2 0 2 4 1 0 : 0 9 A M A C A D V E R : 24 . 2 S ( L M S T E C H ) P A G E S E T U P : -- - - P L O T S T Y L E T A B L E : PL T F U L L . C T B PL O T T E D : 1/ 1 9 / 2 0 2 4 1 0 : 1 7 A M B Y : K, M A H E N D R A N FORMER CHEVRON SITE NO. 377352 1917 WEST 1700 SOUTH SALT LAKE CITY, UTAH 50'100' APPROXIMATE SCALE : 1 in. = 50 ft. 0 MW-1 B-1 NOTE: THIS DRAWING IS REFERENCED FROM THE FOLLOWING: A.“FIGURE 2, SITE PLAN” , BY AECOM DATED: DECEMBER 2019, SCALE: 1’’=100’ FIGURE 2 GROUNDWATER MONITORING WELL FORMER DIRECT-PUSH BORING LOCATION FORMER ABOVEGROUND STORAGE TANK FORMER CORNER SERVICE GAS STATION BUILDING FORMER UNDERGROUND STORAGE TANKS/DISPENSER APPROXIMATE LOCATION OF QUESTAR GAS TEST PIT (8'W x 10'L x 6'D) FORMER SECONDARY CONTAINMENT AERIAL SOURCE: ©2023 MICROSOFT CORPORATION © 2022 MAXAR ©CNES (2022) © 2023 Microsoft Corporation © 2022 Maxar ©CNES (2022) Distribution Airbus DS WA L L A C E R O A D 1700 SOUTH IN D U S T R I A L R O A D IN D U S T R I A L R O A D CHURCH MW-2 (4227.19)MW-3 (4227.53) MW-1 (4226.98) MW-4 (4227.85) B-1 B-2 B-3 MW-6 (4227.28) MW-5 (4227.66) MW-7 (4227.43)MW-8 (4227.48) MW-9 (4227.19) MW-10 (4227.09) MW-11 (4226.93) MW-14 (4226.68) MW-13 (4226.88) 4227 . 6 0 4227.20 4227 . 6 0 4227.2 0 4226.8 0 4226.80 0.34 1.07 1.14 0.80 0.62 MW-12 (4226.62) GROUNDWATER ELEVATION CONTOUR MAP OCTOBER 31, 2023 LEGEND: CI T Y : I R V I N E , C A D I V / G R O U P : E N V C A D D B : J . H A R R I S , E . M U R E S A N L D : E M U R E S A N P I C : M . F L E I S C H N E R P M : A . H O O K T M : G . R A Y M O N D C: \ U s e r s \ J D L o v i n g \ A R C A D I S \ E n v i r o n m e n t a l C A D T e a m - B I M 3 6 0 - O n e D r i v e S y n c L o c a t i o n \ A U S - 9 9 9 9 9 9 9 9 - C H E V _ 3 7 7 3 5 2 _ S A L T L A K E C I T Y _ U T \ 1 0 _ W I P \ 1 0 T _ A R C _ E N V \ 2 0 2 4 \ 0 1 - I n P r o g r e s s \ 0 1 - D W G \ G W M - 2 0 2 3 Q 4 - F 0 3 - G W C M . d w g L A Y O U T : 3 S A V E D : 2/ 2 3 / 2 0 2 4 1 0 : 3 1 A M A C A D V E R : 24 . 2 S ( L M S T E C H ) P A G E S E T U P : -- - - PL O T S T Y L E T A B L E : PL T F U L L . C T B PL O T T E D : 2/ 2 3 / 2 0 2 4 1 0 : 3 1 A M B Y : LO V I N G , J E F F N FORMER CHEVRON SITE NO. 377352 1917 WEST 1700 SOUTH SALT LAKE CITY, UTAH 50'100' APPROXIMATE SCALE : 1 in. = 50 ft. 0 MW-1 B-1 NOTE: THIS DRAWING IS REFERENCED FROM THE FOLLOWING: A.“FIGURE 2, SITE PLAN” , BY AECOM DATED: DECEMBER 2019, SCALE: 1’’=100’ FIGURE 3 GROUNDWATER MONITORING WELL FORMER DIRECT-PUSH BORING LOCATION FORMER ABOVEGROUND STORAGE TANK FORMER CORNER SERVICE GAS STATION BUILDING FORMER UNDERGROUND STORAGE TANKS/DISPENSER APPROXIMATE LOCATION OF QUESTAR GAS TEST PIT (8'W x 10'L x 6'D) FORMER SECONDARY CONTAINMENT GROUNDWATER ELEVATION CONTOUR (DASHED WHERE INFERRED) GROUNDWATER ELEVATION (FEET) APPROXIMATE DIRECTION OF GROUNDWATER FLOW APPROXIMATE HYDRAULIC GRADIENT (FEET/FOOT) CALCULATED GROUNDWATER ELEVATION GWE = (TOC - DTW) + (0.75 X LNAPL THICKNESS) LIGHT NON-AQUEOUS PHASE LIQUID AERIAL SOURCE: ©2023 MICROSOFT CORPORATION © 2022 MAXAR ©CNES (2022) 4227.60 (4227.85) 0. 0 0 4 9 F T / F T GW ELEV. 0.0049 FT/FT 0.34 © 2023 Microsoft Corporation © 2022 Maxar ©CNES (2022) Distribution Airbus DS WA L L A C E R O A D 1700 SOUTH IN D U S T R I A L R O A D IN D U S T R I A L R O A D CHURCH MW-2 MW-3MW-1 MW-4 B-1 B-2 B-3 MW-6 MW-5 MW-7MW-8 MW-9 MW-10 MW-12 MW-11 MW-14MW-13 SOIL ANALYTICAL MAP NOVEMBER 10-12, 2020 AND OCTOBER 17-24 2023 LEGEND: CI T Y : I R V I N E , C A D I V / G R O U P : E N V C A D D B : J . H A R R I S , E . M U R E S A N L D : E M U R E S A N P I C : M . F L E I S C H N E R P M : A . H O O K T M : G . R A Y M O N D C: \ U s e r s \ J D L o v i n g \ A R C A D I S \ E n v i r o n m e n t a l C A D T e a m - B I M 3 6 0 - O n e D r i v e S y n c L o c a t i o n \ A U S - 9 9 9 9 9 9 9 9 - C H E V _ 3 7 7 3 5 2 _ S A L T L A K E C I T Y _ U T \ 1 0 _ W I P \ 1 0 T _ A R C _ E N V \ 2 0 2 4 \ 0 1 - I n P r o g r e s s \ 0 1 - D W G \ G W M - 2 0 2 3 Q 4 - F 0 4 - S A M . d w g L A Y O U T : 4 S A V E D : 2/ 2 2 / 2 0 2 4 6 : 3 7 P M A C A D V E R : 24 . 2 S ( L M S T E C H ) P A G E S E T U P : -- - - PL O T S T Y L E T A B L E : PL T F U L L . C T B PL O T T E D : 2/ 2 2 / 2 0 2 4 6 : 3 7 P M B Y : LO V I N G , J E F F N FORMER CHEVRON SITE NO. 377352 1917 WEST 1700 SOUTH SALT LAKE CITY, UTAH 50'100' APPROXIMATE SCALE : 1 in. = 50 ft. 0 MW-1 B-1 NOTE: THIS DRAWING IS REFERENCED FROM THE FOLLOWING: A.“FIGURE 2, SITE PLAN” , BY AECOM DATED: DECEMBER 2019, SCALE: 1’’=100’ FIGURE 4 GROUNDWATER MONITORING WELL FORMER DIRECT-PUSH BORING LOCATION FORMER ABOVEGROUND STORAGE TANK FORMER CORNER SERVICE GAS STATION BUILDING FORMER UNDERGROUND STORAGE TANKS/DISPENSER APPROXIMATE LOCATION OF QUESTAR GAS TEST PIT (8'W x 10'L x 6'D) FORMER SECONDARY CONTAINMENT TOTAL PETROLEUM HYDROCARBONS AS GASOLINE RANGE ORGANICS TOTAL PETROLEUM HYDROCARBONS AS DIESEL RANGE ORGANICS TOTAL PETROLEUM HYDROCARBONS AS DIESEL RANGE ORGANICS WITH SILICA GEL TREATMENT TOTAL PETROLEUM HYDROCARBONS AS OIL RANGE ORGANICS METHYL TERT-BUTYL ETHER 1,2-DIBROMOETHANE 1,2-DICHLOROETHANE VALUE DETECTED LABORATORY METHOD DETECTION LIMIT (MDL) NOT DETECTED AT OR ABOVE THE LABORATORY REPORTING LIMIT (LRL) ESTIMATED VALUE BETWEEN MDL AND RDL THE SAME ANALYTE IS FOUND IN THE ASSOCIATED BLANK FEET AERIAL SOURCE: ©2023 MICROSOFT CORPORATION © 2022 MAXAR ©CNES (2022) TPH-GRO MW-2 Date 11/11/2020 11/11/2020 Sample Depth (ft)8.7-10.0 11.2-12.5 TPH-GRO 208 360 TPH-DRO 226 405 TPH-DRO w/SGT ---- TPH-ORO 12 <4.93 OIL & GREASE 447 56.7 J Benzene 0.152 0.0980 J Toluene <0.220 <0.777 Ethylbenzene 0.0557 B 0.0701 B J Total Xylenes 0.0569 B J 0.102 B J MTBE <0.0439 <0.155 EDB <0.0439 <0.155 EDC <0.0439 <0.155 Napthalene 4.09 3.74 TPH-DRO TPH-ORO MTBE BOLD <5.00 J B EDB EDC MW-1 Date 11/11/2020 11/11/2020 Sample Depth (ft)8.8-10.0 11.2-12.5 TPH-GRO 73 83.1 TPH-DRO 2,430 3,110 TPH-DRO w/SGT ---- TPH-ORO 153 407 OIL & GREASE 549 1,350 Benzene 0.0178 J 0.0325 J Toluene <0.192 <0.173 Ethylbenzene 0.0526 B 0.0469 B Total Xylenes 0.0435 B J 0.0394 B J MTBE <0.0384 <0.0346 EDB <0.0384 <0.0346 EDC <0.0384 <0.0346 Napthalene 2.89 3.72 MW-3 Date 11/12/2020 11/12/2020 Sample Depth (ft)6.2-7.5 8.7-10.0 TPH-GRO 52.8 18.1 J TPH-DRO 142 38.4 TPH-DRO w/SGT ---- TPH-ORO 23.2 4.62 B J OIL & GREASE <124 <126 Benzene <0.0382 <0.0384 Toluene <0.191 <0.192 Ethylbenzene <0.0382 <0.0384 Total Xylenes <0.115 <0.115 MTBE <0.0382 <0.0384 EDB <0.0382 <0.0384 EDC <0.0382 <0.0384 Napthalene <0.191 <0.192 MW-4 Date 11/10/2020 11/10/2020 Sample Depth (ft)8.5-9.5 10.5-11.5 TPH-GRO 58.4 52.1 TPH-DRO 25 199 TPH-DRO w/SGT ---- TPH-ORO 57.1 391 OIL & GREASE 121 J 70.8 Benzene <0.0466 <0.0445 Toluene <0.233 <0.222 Ethylbenzene <0.0466 <0.0445 Total Xylenes <0.139 <0.133 MTBE <0.0466 <0.0445 EDB <0.0466 <0.0445 EDC <0.0466 <0.0445 Napthalene <0.233 <0.222 MW-5 Date 10/24/2023 10/24/2023 Sample Depth (ft)10-10.75 20-21.5 TPH-GRO 1.63 J 3.58 J [1.99 J] TPH-DRO 13.1 J3 <5.12 [<4.98] TPH-DRO w/SGT 12.4 J3 <5.12 [<4.98] TPH-ORO <4.85 4.01 J [3.31 J] OIL & GREASE 96.7 J 89.2 J [135] Benzene <0.00147 0.00548 [0.00357] Toluene <0.00735 <0.00799 [0.00236 J] Ethylbenzene <0.00367 <0.00400 [<0.00376] Total Xylenes <0.00955 <0.0104 [<0.00978] MTBE <0.00147 <0.00160 [<0.00150] EDB <0.00367 <0.00400 [<0.00376] EDC <0.00367 <0.00400 [<0.00376] Napthalene <0.0184 <0.0200 [<0.0188] MW-6 Date 10/21/2023 10/21/2023 10/21/2023 Sample Depth (ft)3.5-4 5.0-6.0 20-21 TPH-GRO 0.843 B J 2.20 B J 0.800 J TPH-DRO 3.93 J 3.93 J 3.31 J TPH-DRO w/SGT <4.70 3.93 J 3.31 J TPH-ORO 7.54 3.56 J 3.49 J OIL & GREASE 82.2 JP1 173 84.0 J Benzene <0.00141 <0.00158 <0.00145 Toluene <0.00705 <0.00791 <0.00727 Ethylbenzene <0.00353 <0.00396 <0.00364 Total Xylenes <0.00917 <0.0103 <0.00946 MTBE <0.00141 <0.00158 <0.00145 EDB <0.00353 <0.00396 <0.00364 EDC <0.00353 <0.00396 <0.00364 Napthalene <0.0176 <0.0198 <0.0182 MW-7 Date 10/23/2023 10/23/2023 Sample Depth (ft)6.0-6.5 20.0-21.0 TPH-GRO 188 <4.00 [<4.07 ] TPH-DRO 221 2.08 J [5.08 J] TPH-DRO w/SGT 161 2.08 J [5.08 J] TPH-ORO 56 2.79 J [3.63 J] OIL & GREASE 688 138 [75.6 J] Benzene <0.0129 <0.00160 [<0.00163] Toluene <0.0647 <0.00801 [<0.00813] Ethylbenzene <0.0323 <0.00400 [<0.00407] Total Xylenes <0.0841 <0.0104 [<0.0106] MTBE <0.0129 <0.00160 [<0.00163] EDB <0.0323 <0.00400 [<0.00407] EDC <0.0323 <0.00400 [<0.00407] Napthalene <0.162 <0.0200 [<0.0203] MW-8 Date 10/23/2023 10/23/2023 10/23/2023 Sample Depth (ft)5.0-6.0 10.0-10.75 21.0-21.5 TPH-GRO 25.9 33.5 5.05 B TPH-DRO 2,810 279 4.94 J TPH-DRO w/SGT 2,580 264 2.68 J TPH-ORO 18.5 J 5.23 7.34 OIL & GREASE 501 1,190 78.2 J Benzene <0.0128 0.00145 <0.00169 Toluene <0.0639 <0.00709 <0.00847 Ethylbenzene 0.0864 0.0117 <0.00424 Total Xylenes 0.0296 J 0.00598 J <0.0110 MTBE <0.0128 <0.00142 <0.00169 EDB <0.0320 <0.00354 <0.00424 EDC <0.0320 <0.00354 <0.00424 Napthalene 1.59 0.172 <0.0212 MW-9 Date 10/20/2023 10/20/2023 10/20/2023 Sample Depth (ft)4.0-5.0 5.5-6.5 20.0-21.5 TPH-GRO 124 B 93.0 B 2.03 B J TPH-DRO 1,190 1,050 6.37 TPH-DRO w/SGT 1,070 1,060 4.75 J TPH-ORO 4.48 J 29.5 J 2.00 J OIL & GREASE 2,440 673 151 Benzene 0.0165 0.00714 J <0.00165 Toluene 0.0186 J <0.0669 <0.00824 Ethylbenzene 0.0394 0.0135 J <0.00412 Total Xylenes 0.0485 J <0.0870 <0.0107 MTBE <0.0120 <0.0134 <0.00165 EDB <0.0299 <0.0335 <0.00412 EDC <0.0299 <0.0335 <0.00412 Napthalene 12.9 4.4 0.0275 MW-10 Date 10/19/2023 10/19/2023 10/19/2023 10/19/2023 Sample Depth (ft)5.0-6.5 15.5-16.5 20.0-21.5 23.5-25 TPH-GRO 44.6 1.81 B J 3.63 B J 1.98 B J [1.94 B J] TPH-DRO 1,090 51.6 3.01 J 2.19 J [2.37 J] TPH-DRO w/SGT 773 42.4 3.01 J 2.19 J [2.37 J] TPH-ORO 11.4 16.4 4.04 J 1.32 J [2.20 J] OIL & GREASE 439 150 122 J 143 [108 J] Benzene 0.00137 J <0.00142 <0.00182 <0.00150 [<0.00148 ] Toluene <0.00877 <0.00708 <0.00912 <0.00749 [<0.00742 ] Ethylbenzene 0.00249 J <0.00354 <0.00456 <0.00374 [<0.00371 ] Total Xylenes 0.00825 J <0.00921 <0.0119 <0.00973 [<0.00965 ] MTBE <0.00175 <0.00142 <0.00182 <0.00150 [<0.00148 ] EDB <0.00439 <0.00354 <0.00456 <0.00374 [<0.00371 ] EDC <0.00439 <0.00354 <0.00456 <0.00374 [<0.00371 ] Napthalene 0.239 <0.0177 <0.0228 <0.0187 [<0.0185 ] MW-11 Date 10/18/2023 10/18/2023 10/18/2023 Sample Depth (ft)5.0-6.5 15.5-16.5 20-21.5 TPH-GRO 29.8 1.50 J 4.30 J TPH-DRO 3,300 <5.66 30.5 TPH-DRO w/SGT 2,120 <5.66 26.8 TPH-ORO 304 1.70 J 10.8 OIL & GREASE 1,420 96.4 J 57.5 J Benzene 0.00664 <0.00187 <0.00194 Toluene 0.0212 <0.00933 <0.00968 Ethylbenzene 0.0403 <0.00467 0.0224 Total Xylenes 0.109 <0.0121 <0.0126 MTBE <0.00142 <0.00187 <0.00194 EDB <0.00356 <0.00467 <0.00484 EDC <0.00356 <0.00467 <0.00484 Napthalene 0.259 0.0145 J <0.0242 MW-12 Date 10/17/2023 10/17/2023 10/17/2023 Sample Depth (ft)2.0-3.0 5.0-6.0 20.0-21.0 TPH-GRO 2.50 B J 47 2.30 J TPH-DRO 2.32 J 238 15.3 TPH-DRO w/SGT <5.07 183 14.1 TPH-ORO 7.52 5.84 8.76 OIL & GREASE <127 134 62.2 J Benzene 0.000936 J <0.00158 <0.00158 Toluene 0.00567 J <0.00792 0.00330 J Ethylbenzene <0.00398 0.00228 J 0.013 Total Xylenes 0.00341 J 0.0124 0.0103 MTBE <0.00159 <0.00158 <0.00158 EDB <0.00398 <0.00396 <0.00394 EDC <0.00398 <0.00396 <0.00394 Napthalene <0.0199 0.342 0.0152 J MW-13 Date 10/20/2023 10/20/2023 10/20/2023 Sample Depth (ft)10.0-10.5 15.0-16.25 21.5-23 TPH-GRO 2.47 B J 3.58 B J 1.09 B J TPH-DRO <244 <5.58 4.39 J TPH-DRO w/SGT <244 <5.58 4.39 J TPH-ORO 542 2.62 J 4.99 J OIL & GREASE 1,080 232 138 Benzene <0.00147 <0.00207 <0.00159 Toluene 0.0116 <0.0103 <0.00793 Ethylbenzene <0.00368 <0.00517 <0.00396 Total Xylenes 0.00731 J <0.0134 <0.0103 MTBE <0.00147 <0.00207 <0.00159 EDB <0.00368 <0.00517 <0.00396 EDC <0.00368 <0.00517 <0.00396 Napthalene 0.0111 J <0.0258 <0.0198 MW-14 Date 10/18/2023 10/18/2023 Sample Depth (ft)5.5-6.5 20.0-21.5 TPH-GRO 30.8 <4.36 TPH-DRO 2,840 11.1 TPH-DRO w/SGT 1,330 8.86 TPH-ORO 26.9 J 3.73 J OIL & GREASE 472 77.7 J Benzene <0.00164 <0.00174 Toluene <0.00818 <0.00872 Ethylbenzene 0.0074 <0.00436 Total Xylenes 0.00391 J <0.0113 MTBE <0.00164 <0.00174 EDB <0.00409 <0.00436 EDC <0.00409 <0.00436 Napthalene <0.0205 <0.0218 ft TPH-DRO w/ SGT © 2023 Microsoft Corporation © 2022 Maxar ©CNES (2022) Distribution Airbus DS WA L L A C E R O A D 1700 SOUTH IN D U S T R I A L R O A D IN D U S T R I A L R O A D CHURCH MW-2 MW-3MW-1 MW-4 B-1 B-2 B-3 MW-6 MW-5 MW-7MW-8 MW-9 MW-10 MW-12 MW-11 MW-14 MW-13 GROUNDWATER ANALYTICAL MAP OCTOBER 30-31 AND NOVEMBER 1-3, 2023 LEGEND: CI T Y : I R V I N E , C A D I V / G R O U P : E N V C A D D B : J . H A R R I S , E . M U R E S A N L D : E M U R E S A N P I C : M . F L E I S C H N E R P M : A . H O O K T M : G . R A Y M O N D C: \ U s e r s \ J D L o v i n g \ A R C A D I S \ E n v i r o n m e n t a l C A D T e a m - B I M 3 6 0 - O n e D r i v e S y n c L o c a t i o n \ A U S - 9 9 9 9 9 9 9 9 - C H E V _ 3 7 7 3 5 2 _ S A L T L A K E C I T Y _ U T \ 1 0 _ W I P \ 1 0 T _ A R C _ E N V \ 2 0 2 4 \ 0 1 - I n P r o g r e s s \ 0 1 - D W G \ G W M - 2 0 2 3 Q 4 - F 0 5 - G W A M . d w g L A Y O U T : 5 S A V E D : 2/ 2 2 / 2 0 2 4 6 : 2 8 P M A C A D V E R : 24 . 2 S ( L M S T E C H ) P A G E S E T U P : -- - - PL O T S T Y L E T A B L E : PL T F U L L . C T B PL O T T E D : 2/ 2 2 / 2 0 2 4 6 : 3 7 P M B Y : LO V I N G , J E F F N FORMER CHEVRON SITE NO. 377352 1917 WEST 1700 SOUTH SALT LAKE CITY, UTAH 50'100' APPROXIMATE SCALE : 1 in. = 50 ft. 0 MW-1 B-1 NOTE: 1.THIS DRAWING IS REFERENCED FROM THE FOLLOWING: A.“FIGURE 2, SITE PLAN” , BY AECOM DATED: DECEMBER 2019, SCALE: 1’’=100’ 2. ALL VALUES REPORTED IN MILLIGRAMS PER LITER (mg/L). FIGURE 5 GROUNDWATER MONITORING WELL FORMER DIRECT-PUSH BORING LOCATION FORMER ABOVEGROUND STORAGE TANK FORMER CORNER SERVICE GAS STATION BUILDING FORMER UNDERGROUND STORAGE TANKS/DISPENSER APPROXIMATE LOCATION OF QUESTAR GAS TEST PIT (8'W x 10'L x 6'D) FORMER SECONDARY CONTAINMENT TOTAL PETROLEUM HYDROCARBONS AS GASOLINE RANGE ORGANICS TOTAL PETROLEUM HYDROCARBONS AS DIESEL RANGE ORGANICS TOTAL PETROLEUM HYDROCARBONS AS DIESEL RANGE ORGANICS WITH SILICA GEL TREATMENT TOTAL PETROLEUM HYDROCARBONS AS OIL RANGE ORGANICS METHYL TERT-BUTYL ETHER 1,2-DIBROMOETHANE 1,2-DICHLOROETHANE VALUE DETECTED LABORATORY METHOD DETECTION LIMIT (MDL) NOT DETECTED AT OR ABOVE THE LABORATORY REPORTING LIMIT (LRL) ESTIMATED VALUE BETWEEN MDL AND RDL THE SAME ANALYTE IS FOUND IN THE ASSOCIATED BLANK AERIAL SOURCE: ©2023 MICROSOFT CORPORATION © 2022 MAXAR ©CNES (2022) TPH-GRO TPH-DRO TPH-ORO MTBE BOLD <0.192 J B EDB EDC MW-1 Date 10/31/2023 TPH-GRO 0.283 TPH-DRO 5.88 TPH-DRO w/SGT 4.83 TPH-ORO 0.155 B OIL & GREASE 5.24 J Benzene 0.00456 Toluene <0.00100 Ethylbenzene 0.000499 J Total Xylenes 0.000323 J MTBE <0.00100 EDB <0.00100 EDC <0.00100 Napthalene 0.0877 MW-2 Date 10/31/2023 TPH-GRO 0.363 TPH-DRO 1.30 TPH-DRO w/SGT 0.720 TPH-ORO 0.224 B OIL & GREASE <5.68 Benzene 0.00644 Toluene 0.000372 J Ethylbenzene 0.000382 J Total Xylenes <0.00300 MTBE <0.00100 EDB <0.00100 EDC <0.00100 Napthalene 0.0172 MW-3 Date 11/1/2023 TPH-GRO 0.445 TPH-DRO 0.793 TPH-DRO w/SGT 0.519 TPH-ORO <0.100 OIL & GREASE <6.17 Benzene 0.000535 J Toluene <0.00500 Ethylbenzene 0.00179 J Total Xylenes <0.0150 MTBE <0.00500 EDB <0.00500 EDC <0.00500 Napthalene <0.0250 MW-5 Date 11/3/2023 TPH-GRO 1.57 TPH-DRO 0.625 TPH-DRO w/SGT 0.304 TPH-ORO 0.131 OIL & GREASE <5.81 Benzene 0.000487 J Toluene 0.000413 J Ethylbenzene 0.0174 Total Xylenes 0.00198 J MTBE <0.00100 EDB <0.00100 EDC <0.00100 Napthalene 0.00728 MW-6 Date 11/2/2023 TPH-GRO 0.134 TPH-DRO 0.196 B TPH-DRO w/SGT 0.0350 BJ TPH-ORO 0.220 B OIL & GREASE <5.88 Benzene <0.00100 Toluene <0.00100 Ethylbenzene <0.00100 Total Xylenes <0.00300 MTBE <0.00100 EDB <0.00100 EDC <0.00100 Napthalene <0.00500 MW-7 Date 11/3/2023 TPH-GRO 0.0901 J TPH-DRO 0.157 TPH-DRO w/SGT 0.546 J TPH-ORO 0.0879 J OIL & GREASE <6.25 Benzene <0.00100 Toluene <0.00100 Ethylbenzene <0.00100 Total Xylenes <0.00300 MTBE <0.00100 EDB <0.00100 EDC <0.00100 Napthalene 0.00122 J MW-8 Date 11/3/2023 TPH-GRO 0.100 J TPH-DRO 2.35 TPH-DRO w/SGT 0.561 TPH-ORO 0.557 OIL & GREASE <5.56 Benzene 0.00121 Toluene <0.00100 Ethylbenzene 0.00274 Total Xylenes 0.000204 J MTBE <0.00100 EDB <0.00100 EDC <0.00100 Napthalene 0.0161 MW-9 Date 11/1/2023 TPH-GRO 0.11 TPH-DRO 1.96 TPH-DRO w/SGT 1.12 TPH-ORO 0.214 B OIL & GREASE <6.10 Benzene 0.000345 J Toluene <0.00100 Ethylbenzene <0.00100 Total Xylenes <0.00300 MTBE <0.00100 EDB <0.00100 EDC <0.00100 Napthalene 0.0198 MW-10 Date 10/31/2023 TPH-GRO 0.14 TPH-DRO 5.25 TPH-DRO w/SGT 4.99 TPH-ORO 0.0841 B J OIL & GREASE 1.95 J Benzene 0.000543 J Toluene <0.00100 Ethylbenzene 0.000717 J Total Xylenes 0.000927 J MTBE <0.00100 EDB <0.00100 EDC <0.00100 Napthalene 0.058 MW-11 Date 10/30/2023 TPH-GRO 0.108 TPH-DRO 2.38 TPH-DRO w/SGT 1.51 TPH-ORO 0.257 B OIL & GREASE <5.56 Benzene 0.00118 Toluene <0.00100 Ethylbenzene <0.00100 Total Xylenes <0.00300 MTBE <0.00100 EDB <0.00100 EDC <0.00100 Napthalene 0.0136 MW-12 Date 11/2/2023 TPH-GRO 0.119 TPH-DRO 2.02 TPH-DRO w/SGT 1.49 TPH-ORO 0.330 B OIL & GREASE <5.56 Benzene 0.00154 Toluene <0.00100 Ethylbenzene 0.000288 J Total Xylenes 0.000689 J MTBE <0.00100 EDB <0.00100 EDC <0.00100 Napthalene 0.048 MW-13 Date 11/2/2023 TPH-GRO 0.0365 J TPH-DRO 0.516 TPH-DRO w/SGT 0.164 B TPH-ORO 0.289 B OIL & GREASE <5.81 Benzene <0.00100 Toluene <0.00100 Ethylbenzene <0.00100 Total Xylenes <0.00300 MTBE <0.00100 EDB <0.00100 EDC <0.00100 Napthalene <0.00500 MW-14 Date 11/2/2023 TPH-GRO 0.0601 J TPH-DRO 0.474 TPH-DRO w/SGT 0.160 B TPH-ORO 0.289 B OIL & GREASE <5.56 Benzene <0.00100 Toluene <0.00100 Ethylbenzene <0.00100 Total Xylenes <0.00300 MTBE <0.00100 EDB <0.00100 EDC <0.00100 Napthalene <0.00500 MW-4 Date 11/1/2023 TPH-GRO 2.20 [2.82] TPH-DRO 0.704 [0.687] TPH-DRO w/SGT 0.447 B [0.539] TPH-ORO 0.0831 B J [0.0531 B J] OIL & GREASE <6.17 [<5.26] Benzene 0.000740 J [0.000571 J] Toluene <0.00500 [0.000711 J] Ethylbenzene 0.0171 [0.0191] Total Xylenes <0.0150 [0.000661 J] MTBE <0.00500 [<0.00100] EDB <0.00500 [<0.00100] EDC <0.00500 [<0.00100] Napthalene <0.0250 [0.00181 J] TPH-DRO w/ SGT Appendix A Regulatory Directives Appendix B Permits PERMIT TO WORK IN THE PUBLIC WAY ENG2023-01318SALT LAKE CITY CORPORATION ENGINEERING DIVISION 349 SOUTH 200 EAST, SUITE 100 SALT LAKE CITY, UTAH 84111 PHONE (801) 535-6396 FAX (801) 535-6093 engpermit@slcgov.com Assigned Inspector: Jacob Easter Office Phone: (801) 913-5725 Cell Phone: Job Address:Contractor Phone Numbers:1917 W 1700 S Phone1: Phone2: 7606023810 FAX: Applicant Name: Lauren Lindham Business Name: Mailing Address: 530 B Street Suite 1000 San Diego, CA 92101 Traffic Control Plan Starting and Ending Dates Fee Barricade Manual Figure No.: See attached Traffic Control Plan Begin Date:10/11/2023 Total Fee:$1,019.52 Traffic Permit Number:TRN2023-02038 Expiration Date: 11/01/2023 Certificate of Insurance as Per City Ordinance ±Chapter 14.32.065 Number: Bonds As Per City Ordinance ±Chapter 14.32.070 Number: State Contractors License As Per City Ordinance ±Chapter 14.32.025 Number: Work Type:Test Bore Drawing Included:Yes APWA Standard: Field Contact: Bridger Cherry Phone: 3852879066 Comments or Additional Requirements: Installation of two, 2-inch groundwater monitoring wells to a maximum depth of 20 feet below ground surface (bgs) in the City's right-of-way (1700 S). The wells will be finished with the wellhead sealed with a locking cap and contained within a flush mounted, traffic-rated, watertight well box. Prior to drilling/installation, a private utility locator will perform a geophysical survey to identify/confirm any utilities in the vicinity. Both locations will be cleared to a minimum of 5 feet bgs via hand auger and/or air knife prior to commencement of drilling. 10/11 ±Utility locate 10/17 ±Hole clearance of two locations 10/19 & 10/20 ±Drilling/well installation at two locations (1 well each day + TC left up overnight) 10/26 ±Well development of two locations 10/30-11/1 ±GW sampling of 6 locations Notice: For Public Utility inspections, please call 801-483-6727 at least 24 hours before commencing work. To activate the permit with SLC Engineering, please call the assigned inspector (see top right hand corner of the permit) at least 24 hours before commencing work. For work to begin on a Monday or after a holiday, please call the Friday before commencing work. Digging within ten feet ¶ of any parkstrip street tree requires written authorization from Salt Lake City Urban Forestry. Contact Urban Forestry at (801) 972-7818, before any excavation with in ten feet of a street tree, for inspection and authorization. BEFORE EXCAVATION CONTACT BLUE STAKES ±or 1-800-662-4111 PERMIT APPLICATION:Application is hereby made for a permit to work in the public way as specified above. Applicant agrees to the terms on the reverse side and to any increase in fees should they be required by Engineering. Print name of Applicant: Lauren Lindham Signature of Applicant:Date: 10/10/2023 Permit Issued By: Scott Weiler ** WORK GUARANTEED - 3 YEARS FROM ACCEPTANCE DATE ** Please contact inspector 24 hours before beginning work GENERAL CONDITIONS ACCEPTANCE OF CONDITIONS. It is understood and agreed by the Permittee that performing any work under this permit constitutes acceptance of Title 14 Chapter 32 of the Revised Ordinances of Salt Lake City and the City's Regulations for controlling construction, excavation and obstructions in the Public Right ¬of ¬Way, latest revision. PROXIMATE WORK. Applicant agrees that no other work shall be done under this permit except that specifically set forth herein. It is the applicants responsibility to verify the exact location of city and private facilities prior to commencing excavation operations. PERMIT AND DRAWINGS AT JOB SITE. The permittee shall have at the work site a copy of the permit, the traffic control plan, and the City approved drawings. NOTIFICATION. Notify the assigned inspector 24 hours before commencing work. Provide the following information: permit number, name and telephone number of permittee, date/time work is to commence, location of work and any other information which may be relevant to the work. CONFORMANCE TO EXISTING LAWS AND CITY SPECIFICATIONS. Permittee agrees to be fully informed of all federal, state and local laws, ordinances, rules, regulations, and City Construction Specifications which, in any manner, affect the work, and at all times shall observe and comply with such laws, ordinances, rules, regulations and specifications. The City Engineer reserves the right to shut down and/or issue a citation for violation of these provisions. ENVIRONMENTAL LIABILITY. Permittee agrees to indemnify, defend and hold harmless Salt Lake City, its officers, agents and employees against any claims, losses, damages, or expenses, including, without limitation, any fees or penalties imposed by the United States Environmental Protection Agency, the Utah State Department of Environmental Protection Agency, the Utah State Department of Environmental Quality or any other government or regulatory agency and any attorney's fees or costs sustained on account of, or related to, the presence, release, discovery or creation of hazardous wastes or similar materials as those materials are defined under applicable federal or state statutes or regulations, including, without limitation, the Resource Conservation and Recovery Act of 1976. STANDARD SPECIFICATIONS AND STANDARD DRAWINGS. Comply with all Salt Lake City Standard Specifications and Standard Drawings for cutting surface, traffic control, backfill, compaction, selection of subgrade materials, asphalt and concrete surfacing requirements. Printed copies of the Regulations and Specifications can be obtained through the City Engineer's Office. WARRANTY. Permittee shall guarantee the worksite restoration for a period of three years from completion and acceptance of the work, reasonable wear and tear excepted. PAYMENT DUE within 20 calendar days: If you do not respond to a payment due EMAIL within 10 business days, the Salt Lake City Collections Department can take further action as it deems appropriate and additional fees may be assessed. The Salt Lake City Collections Department will aggressively pursue collection of this debt and will use every means necessary to collect this debt. This process may include court action, garnishment of income tax refund, bank accounts, or wages. The debt may be referred to third-party collection vendors and submitted to credit reporting agencies. SPECIAL CONDITIONS EXCAVATION OPERATIONS BLUE STAKES. Before commencing excavation operations, Permittee shall call "Blue Stakes" at 811 TRAFFIC CONTROL DEVICES. Traffic control devices must be in place before excavation begins. ENVIRONMENTAL CONTROL DUST AND DEBRIS. Keep dust and debris controlled at the work site at all times. If necessary, wet down dusty areas with water and provide containers for debris. WHEEL CLEANING ORDINANCE. Conform to Section 18.20.210 of the Revised Ordinances of Salt Lake City, 1987. The ordinance describes the City's requirements for keeping the public way clean. NOISE. Permittee shall control noise in accordance with the Salt Lake County Health Department Noise Ordinance. CLEANUP. Remove all equipment, material, barricades and similar items from the right of way. Areas used for storage of excavated material will be smoothed and returned to their original contour. Vacuum sweeping or hand sweeping is required when Engineer determines cleaning equipment is ineffective. CONFORMANCE TO ENGINEERING REGULATIONS. All provisions of Salt Lake City Engineering Regulation 5¬R¬4, "Regulations for Controlling Construction in the City's Public Way", and other pertinent Engineering Regulations, will be adhered to. Engineering Regulations can be obtained in the office of the City Engineer, 349 South 200 East, Suite 100, Salt Lake City, Utah 84111. TRAFFIC INTERRUPTION. Construction operations will be conducted in a manner to minimize the amount of interference or interruption of roadway traffic. Except during emergency conditions or unless authorized by the Engineer, construction operations such as excavation, backfill and pavement restoration on major/collector and CBD streets are prohibited during peak traffic hours of 7:00 to 9:00 a.m. and 4:00 to 6:00 p.m. TRAFFIC CONTROL MANUAL. All provisions of the current "Traffic Control Manual" shall be adhered to. This manual provides regulations concerning traffic control construction barricades, road closures, public and private access, traffic control signing, traffic control in Central Business Area and traffic control devices. EMERGENCY INFORMATION. Permittee shall clearly post on barricades in letters not less than two inches (2 in.) high emergency information consisting of the name and emergency telephone number of the permittee, and the permittee shall cause at least one such barricade per block to be erected at every job site until the work is complete and formally accepted by the City. STREET EXCAVATION IN WINTER. Excavation of City Streets during the winter months (herein defined as November 15 to April 1) will be allowed only if the work is a new service connection, required maintenance or emergency, or otherwise approved by the Engineer. Permanent patching of City streets excavated in the winter may be delayed until April 1, provided the permittee provides and maintains a temporary asphalt surface until such time as the permanent surfacing is accomplished. PRECONSTRUCTION PICTURES OF EXISTING PUBLIC WAY IMPROVEMENTS. Prior to commencing the permit work, the permittee is encouraged to secure pictures of the conditions of the existing public way improvements such as curbing, sidewalk, landscaping, asphalt surfaces, etc. TIME LIMIT. Unless authorized otherwise by the Engineer on the permit, all paving and replacement of street facilities shall be done within seven (7) calendar days from the time the excavation commences, or within three (3) calendar days on major or collector streets from the time excavation commences, except as provided for during excavation in winter or during weather conditions that do not allow paving according to applicable standards and specifications. If work is expected to exceed the above duration, the permittee shall submit a detailed construction schedule for approval. The schedule will address means and methods to minimize traffic disruption and complete the construction as soon as possible. EXCAVATION WITHIN 10 FEET OF STREET TREES. Before commencing excavation activities, Permittee shall contact Salt Lake City Urban Forestry (801) 535-7818 for an inspection. 1 Lindham, Lauren From:Utility Coordinator <Utility.Coordinator@slcgov.com> Sent:Thursday, October 12, 2023 6:23 AM To:Lindham, Lauren; Graves, Anita Cc:Mason, Carissa Subject:RE: (EXTERNAL) ENG2023-01318 - 1917 W 1700 S Attachments:Site Map with utilities_2023.pdf Lauren The proposed project located at 1917 West 1700 South is approved by the Salt Lake City Department of Public Utilities. Reminder that you are still required to obtain all applicable permits for this work including but not limited to the right of way permit, traffic control permit, and real estate services. If the work is to take place during the work week (Monday – Friday) within the normal hours of operations, please call 48 hours before construction. Contact Fabrizio Terzo at (801) 654-1398 or Anita Graves at (801) 483-6806 (during normal working hours) to schedule a Salt Lake City Department of Public Utilities inspector to be on site. If the work is to take place on the weekend (Saturday - Sunday), Holliday, or outside of normal working hours please call 96 hours before construction. Contact Fabrizio Terzo at (801) 654-1398 or Anita Graves at (801) 483-6806 (during normal working hours) to schedule a Salt Lake City Department of Public Utilities inspector to be on site. Please note that I will be on vacation starting Monday October 16th, 2023 and returning to work on Monday November 13th, 2023. If you have comments or question about a permit durning that time please contact Nathan Page at Nathan.page@slcgov.com or (801) 483-6828. ROBERT J. BAHR Engineering Technician V DEPARTMENT of PUBLIC UTILITIES | SALT LAKE CITY CORPORATION 1805 West 500 South, Salt Lake City, Utah, 84104 Office:(801) 483-6803 |Mobile:(801) 915-1270 Email:robert.bahr@slcgov.com Email: utility.coordinator@slcgov.com WWW.SLC.GOV/UTILITIES WWW.SLC.GOV From: Lindham, Lauren <Lauren.Lindham@arcadis.com> Sent: Wednesday, October 11, 2023 4:25 PM To: Utility Coordinator <Utility.Coordinator@slcgov.com>; Graves, Anita <Anita.Graves@slcgov.com> Cc: Mason, Carissa <Carissa.Mason@arcadis.com> Subject: RE: (EXTERNAL) ENG2023-01318 - 1917 W 1700 S Hi Robert, Appendix C Boring Logs 18 0 13 0 (0.0-0.5 ft) NOTE: Asphalt. (0.5-2.5 ft) No Recovery. NOTE: Base rock for road. (2.5-3.5 ft): CLAY, some silt, little very fine to fine sand; soft, low to medium plasticity, slow dilatancy, well sorted, dry to moist, 2.5Y 6/4 - light yellowish brown. (3.0-3.5 ft) NOTE: Increased clay. (3.5-6.5 ft): CLAY, little silt, trace very fine sand; soft, high plasticity, no dilatancy, moist, 2.5Y 5/4 - light olive brown, iron oxide staining. (5.75-6.5 ft) NOTE: Olive staining. (6.5-10.0 ft) No Recovery. (10.0-11.0 ft) CLAY, little silt, trace very fine sand; soft, high plasticity, no dilatancy, dry to moist, 2.5Y 5/4 - light olive brown. (11.0-11.16 ft): SAND, medium to very coarse, subangular and CLAY, little silt; dense, high plasticity, slow dilatancy, well sorted, moist, 2.5Y 5/1 - gray, slight odor, hydrocarbon staining. (11.16-11.25 ft): SAND, very fine to medium, subangular to subround, trace silt, trace clay; medium dense, no plasticity, rapid dilatancy, poorly sorted, wet, 2.5Y 5/1 - gray, moderate odor, hydrocarbon staining, stratified structure. NOTE: Little olive staining. (11.25-11.5 ft): SAND, very fine to very coarse, angular to subangular, very loose, poorly sorted, wet, 2.5Y 6/2 - light brownish gray, no staining. (11.5-15.0 ft) No Recovery. Concrete Bentonite Chips #10/20 Sand 2" 0.01-Slot Sch. 40 PVC Screen 1 1 1 2 4 6 0.0 0.1 53.7 1.4 45.6 NoYes Drilling Co.: Driller: Drilling Method: Drilling Rig: Remarks: Cascade Drilling Arturo Hollow-Stem Auger (HSA) CME TR7 J65 4234.069 Split-Spoon 5 ft Not Recorded 7.02 ft btoc 7436131.422 " = inches; ft = feet; bgs = below ground surface; PVC = polyvinyl chloride, PPM = parts per million Sampling Method: Sampling Interval: Water Level Start (ft. bgs.): Water Level Finish (ft. btoc.): Converted to Well: Surface Elev: North Coor: East Coor:1516803.25 Chevron 377352 - Salt Lake City, UT 30063755 13957th street Oakland CA 94607 US Project Name: Project Number: Project Location: Sheet: 1 of 2Soil Boring Log SampleInterval Recovery(in.) Logger: Reviewer: Lea Milando Minda Moe Date Started: Date Completed: Boring No.:MW-10 Depth(feet) 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 USCSClass Description WellConstructionDetails 10/19/2023 10/19/2023 BlowCounts PID(ppm)Sample ID CH E V R O N 3 7 7 3 5 2 C : \ U S E R S \ M K 1 9 3 2 \ O N E D R I V E - A R C A D I S \ G I N T B O R E L O G S \ H A R I R A A M \ C H E V R O N L O G S \ C H E V R O N 3 7 7 3 5 2 \ W O R K I N G \ A R C H I V E \ C H E V R O N 3 7 7 3 5 2 P R O J E C T . G P J W I L L M I N G T O N - . G D T 3 / 1 / 2 4 18 0 18 18 0 18 (15.0-16.25 ft): CLAY, very soft, medium plasticity, wet, 2.5Y 2.5/1 - black, strong odor, hydrocarbon staining, homogeneous structure. (16.25-16.5 ft): CLAY, little very fine to very coarse sand, angular to subangular, little gravel, granules to small pebbles, angular, little silt; very soft, medium plasticity, slow dilatancy, poorly sorted, wet, 2.5Y 2.5/1 - black, strong odor, hydrocarbon staining. (16.5-20.0 ft) No Recovery. (20.0-21.25 ft): CLAY, trace coarse sand, subangular; very soft, high plasticity, wet, 2.5Y 2.5/1 - black, strong odor, hydrocarbon staining. NOTE: No dilatancy. (21.25-21.5 ft): SAND, very fine to fine, soft, well sorted, wet, 2.5Y 2.5/1 - black, strong odor, hydrocarbon staining. (21.5-22.5 ft): CLAY, little silt, trace coarse sand, angular; very soft, low plasticity, rapid dilatancy, poorly sorted, wet, 2.5Y 2.5/1 - black, hydrocarbon staining. (22.5-23.0 ft): SAND, very fine to fine, some silt, some clay; stiff, no plasticity, slow dilatancy, well sorted, dry to moist, 2.5Y 4/1 - dark gray, hydrocarbon staining. (23.0-23.5 ft) No Recovery. (23.5-25.0 ft): SAND, very fine to fine, little silt; soft, rapid dilatancy, well sorted, wet, 2.5Y 3/1 - very dark gray. End of boring at 25.0 ft bgs. 2" 0.01-Slot Sch. 40 PVC Screen End Cap 1 1 1 2 4 6 15 17 17 0.0 0.0 0.1 0.0 " = inches; ft = feet; bgs = below ground surface; PVC = polyvinyl chloride, PPM = parts per millionRemarks: Chevron 377352 - Salt Lake City, UT 30063755 13957th street Oakland CA 94607 US Project Name: Project Number: Project Location: Sheet: 2 of 2Soil Boring Log SampleInterval Recovery(in.) Logger: Reviewer: Lea Milando Minda Moe Date Started: Date Completed: Boring No.:MW-10 Depth(feet) 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 USCSClass Description WellConstructionDetails 10/19/2023 10/19/2023 BlowCounts PID(ppm)Sample ID CH E V R O N 3 7 7 3 5 2 C : \ U S E R S \ M K 1 9 3 2 \ O N E D R I V E - A R C A D I S \ G I N T B O R E L O G S \ H A R I R A A M \ C H E V R O N L O G S \ C H E V R O N 3 7 7 3 5 2 \ W O R K I N G \ A R C H I V E \ C H E V R O N 3 7 7 3 5 2 P R O J E C T . G P J W I L L M I N G T O N - . G D T 3 / 1 / 2 4 13.8 0 18 0 18 0 18 (0.0-0.05 ft) NOTE: Asphalt. (0.05-1.0 ft): GRAVEL, granules to large pebbles, subangular to subround, some clay, little silt, little very fine to very coarse sand, angular to subangular; dense, low plasticity, slow dilatancy, poorly sorted, moist, 2.5Y 4/4 - olive brown, blocky structure. (1.0-3.0 ft): SILT, some clay, little gravel, granules to medium pebbles, subangular to round, little very fine to medium sand, subangular to subround; soft, no to low plasticity, no dilatancy, poorly sorted, moist, 2.5Y 5/3 - light olive brown, iron oxide staining. NOTE: 1% debris (porcelain shard) (3.0-5.0 ft): CLAY and SILT, trace very fine to fine sand; medium stiff, high plasticity, no dilatancy, well sorted, dry to moist, 2.5Y 6/4 - light yellowish brown, iron oxide staining. (5.0-6.5 ft): CLAY, some silt, some very fine to fine sand, trace gravel, granules to small pebbles, angular to subround; medium stiff, high plasticity, no dilatancy, poorly sorted, dry to moist, 2.5Y 6/4 - light yellowish brown, moderate odor, hydrocarbon staining. (6.5-10.0 ft) No Recovery. (10.0-11.5 ft): SAND, fine to medium, subangular to subround, little clay, trace silt; soft, medium plasticity, slow dilatancy, well sorted, moist, 2.5Y 5/1 - gray, slight odor, no staining, homogeneous structure. (11.5-15.0 ft) No Recovery. (15.0-15.5 ft): SAND, fine to medium, subangular to subround, little clay, trace silt; soft, medium plasticity, slow dilatancy, well sorted, moist, 2.5Y 5/1 - gray, slight odor, no staining, homogeneous structure. (15.5-16.5 ft): CLAY, trace silt; stiff, high plasticity, no dilatancy, moist, 2.5Y 5/2 - grayish brown, slight odor, iron oxide staining, homogeneous structure. (16.5-20.0 ft) No Recovery. (20.0-21.5 ft): CLAY, trace medium to coarse sand, angular to subangular, trace silt; soft, high plasticity, slow dilatancy, moist to wet, 2.5Y 4/1 - dark gray, slight odor, hydrocarbon staining. End of boring at 21.5 ft bgs. Concrete Bentonite Chips #10/20 Sand 2" 0.01-Slot Sch. 40 PVC Screen End Cap 2 2 2 4 9 11 1 1 1 4 4 15 0.2 32.8 0.9 0.5 MW-11-S-5-6.5 231018 MW-11-S-15.5-16.5 231018 MW-11-S-20-21.5 231018 NoYes Drilling Co.: Driller: Drilling Method: Drilling Rig: Remarks: Cascade Drilling Arturo Hollow-Stem Auger (HSA) TR7J65 4234.564 Split-Spoon 5 ft Not Recorded 6.94 ft btoc 7436205.023 " = inches; ft = feet; bgs = below ground surface; PVC = polyvinyl chloride, PPM = parts per million Sampling Method: Sampling Interval: Water Level Start (ft. bgs.): Water Level Finish (ft. btoc.): Converted to Well: Surface Elev: North Coor: East Coor:1516898.779 Chevron 377352 - Salt Lake City, UT 30063755 13957th street Oakland CA 94607 US Project Name: Project Number: Project Location: Sheet: 1 of 1Soil Boring Log SampleInterval Recovery(in.) Logger: Reviewer: Bridger Cherry Minda Moe Date Started: Date Completed: Boring No.:MW-11 Depth(feet) 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 USCSClass Description WellConstructionDetails 10/18/2023 10/18/2023 BlowCounts PID(ppm)Sample ID CH E V R O N 3 7 7 3 5 2 C : \ U S E R S \ M K 1 9 3 2 \ O N E D R I V E - A R C A D I S \ G I N T B O R E L O G S \ H A R I R A A M \ C H E V R O N L O G S \ C H E V R O N 3 7 7 3 5 2 \ W O R K I N G \ A R C H I V E \ C H E V R O N 3 7 7 3 5 2 P R O J E C T . G P J W I L L M I N G T O N - . G D T 3 / 1 / 2 4 12 0 12 0 12 0 12 (0-0.08 ft) NOTE: Asphalt. (0.08-1.5 ft): SILT and SAND, with little clay, low to medium plasticity, slow dilatancy; very soft, dry to moist, olive brown - 2.5Y 1/4, fining downward. (1.5-2.0 ft): SILT; some clay, low to medium plasticity, slow dilatancy, little sand; very soft, dry to moist, light olive brown - 2.5Y 5/3. (2.0-4.5 ft): SILT, some clay, medium plasticity, slow dilatancy, little sand; very soft, moist; light grayish brown - 2.5Y 6/2, micaceous sand. At 4.0 ft Iron staining. (4.5-5.75 ft) SILT and CLAY with little sand, medium plasticity, slow dilatancy; very soft, moist to wet, grayish brown - 2.5Y 5/2, gray to black staining, micaceous. At 5.5 ft <1" lense with 10% very coarse sand (5.75-6.0 ft) SILT and CLAY with little sand, medium plasticity, slow dilatancy; very soft, moist to wet, very dark gray - 2.5Y 3/1, gray to black staining, micaceous. (6.0-10.0 ft): No Recovery. (10.0-10.5 ft): SAND with little silt and clay, no to low plasticity, angular to subangular; poorly sorted; grayish brown - 2.5 Y 5/2. (10.5-11.0 ft): SAND with trace silt, trace granules, angular to subangular; poorly sorted;wet, gray - 2.5Y 5/1, gray staining. (11.0-15.0 ft): No Recovery. (15.0-15.25 ft): SAND with trace silt, fining upward, subangular; moderately sorted, wet, dark grayish brown - 2.5Y 4/2. (15.25-15.5 ft): SAND with trace silt and trace gravel, granules to small pebbles, subrounded, angular to subrounded; poorly sorted; wet, dark grayish brown - 2.5Y 4/2, fining upward. (15.5-16.0 ft): CLAY with little silt, high plasticity, no dilatancy; hard, dry to moist, black - 2.5Y 2.5/1, black staining. (16.0-20.0 ft): No Recovery. (20-20.25 ft): SANDY SILT, slow dilatancy, no to low plasticity, angular; soft, wet; black - 2.5Y 2.5/1, mild to strong hydrocarbon odor, black staining. (20.25-21.0 ft): SILT, non plastic, rapid dilatancy; well sorted, medium stiff, moist to wet, dark gray - 2.5Y 4/1, gray staining, micaceous / angular. End of boring at 21.0 ft bgs. Concrete Hydrated Bentonite Chips #10/20 Sand 2" 0.01-Slot Sch. 40 PVC Screen End Cap 3 3 4 4 8 3 6 NoYes Drilling Co.: Driller: Drilling Method: Drilling Rig: Remarks: Cascade Drilling Arturo Hollow-Stem Auger (HSA) Hand Auger, Hollow Stem Auger 4234.080 Split-Spoon 5 ft Not Recorded 7.5 ft btoc 7436201.667 " = inches; ft = feet; bgs = below ground surface; PVC = polyvinyl chloride, PPM = parts per million Sampling Method: Sampling Interval: Water Level Start (ft. bgs.): Water Level Finish (ft. btoc.): Converted to Well: Surface Elev: North Coor: East Coor:1516830.819 Chevron 377352 - Salt Lake City, UT 30063755 13957th street Oakland CA 94607 US Project Name: Project Number: Project Location: Sheet: 1 of 1Soil Boring Log SampleInterval Recovery(in.) Logger: Reviewer: Lea Milando Minda Moe Date Started: Date Completed: Boring No.:MW-12 Depth(feet) 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 USCSClass Description WellConstructionDetails 10/17/2023 10/17/2023 BlowCounts PID(ppm)Sample ID CH E V R O N 3 7 7 3 5 2 C : \ U S E R S \ M K 1 9 3 2 \ O N E D R I V E - A R C A D I S \ G I N T B O R E L O G S \ H A R I R A A M \ C H E V R O N L O G S \ C H E V R O N 3 7 7 3 5 2 \ W O R K I N G \ A R C H I V E \ C H E V R O N 3 7 7 3 5 2 P R O J E C T . G P J W I L L M I N G T O N - . G D T 3 / 1 / 2 4 18 0 18 0 18 0 18 18 (0.1-2.5 ft): SAND, very fine to coarse, angular to subround, some silt, little clay; loose, medium plasticity, slow dilatancy, poorly sorted, dry to moist, 2.5Y 5/4 - light olive brown. (2.5-5.0 ft): CLAY and SILT, little very fine to medium sand, angular to subround; soft, high plasticity, no dilatancy, poorly sorted, dry to moist, 2.5Y 6/3 - light yellowish brown, iron oxide staining. (5.0-6.5 ft): SILT, little very fine to medium sand, subangular to subround, little clay; medium stiff, high plasticity, slow dilatancy, poorly sorted, moist, 2.5Y 6/4 - light yellowish brown, iron oxide staining. (6.5-10.0 ft) No Recovery. (10.0-10.5 ft): SILT, some clay, little very fine to medium sand, angular to subround; stiff, medium plasticity, no dilatancy, poorly sorted, moist, 2.5Y 5/4 - light olive brown. (10.5-11.0 ft): SILT, some clay, little very fine to coarse sand, angular to subround; stiff, medium plasticity, no dilatancy, poorly sorted, moist, 2.5Y 5/4 - light olive brown. (11.0-11.5 ft): GRAVEL, granules to small pebbles, subangular to subround and SAND, medium to very coarse, angular to round, loose, poorly sorted, wet, 2.5Y 5/1 - gray. (11.5-15.0 ft) No Recovery. (15.0-16.5 ft): CLAY, some silt, little gravel, granules to small pebbles, subangular to subround, little medium sand, subangular to subround; medium dense, medium to high plasticity, slow dilatancy, poorly sorted, wet, 2.5Y 2.5/1 - black, hydrocarbon staining. (16.25-16.5 ft) NOTE: 16.25 to 16.5 is mostly silt, firm consistency. (16.5-20.0 ft) No Recovery. (20.0-21.5 ft): CLAY, some silt, little gravel, granules to small pebbles, subangular to subround, little medium sand, subangular to subround; medium dense, medium to high plasticity, slow dilatancy, poorly sorted, wet, 2.5Y 2.5/1 - black, hydrocarbon staining. End of boring at 21.5 ft bgs. Concrete Bentonite Chips #10/20 Sand 2" 0.01-Slot Sch. 40 PVC Screen End Cap 1 3 4 3 5 2 2 3 4 5 6 7 3 3 6 NoYes Drilling Co.: Driller: Drilling Method: Drilling Rig: Remarks: Cascade Drilling Arturo Hollow-Stem Auger (HSA) CME TR7 J65 4233.905 Split-Spoon 5 ft Not Recorded 6.83 ft btoc 7436239.508 " = inches; ft = feet; bgs = below ground surface; PVC = polyvinyl chloride, PPM = parts per million Sampling Method: Sampling Interval: Water Level Start (ft. bgs.): Water Level Finish (ft. btoc.): Converted to Well: Surface Elev: North Coor: East Coor:1516809.256 Chevron 377352 - Salt Lake City, UT 30063755 13957th street Oakland CA 94607 US Project Name: Project Number: Project Location: Sheet: 1 of 1Soil Boring Log SampleInterval Recovery(in.) Logger: Reviewer: Lea Milando Minda Moe Date Started: Date Completed: Boring No.:MW-13 Depth(feet) 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 USCSClass Description WellConstructionDetails 10/20/2023 10/21/2023 BlowCounts PID(ppm)Sample ID CH E V R O N 3 7 7 3 5 2 C : \ U S E R S \ M K 1 9 3 2 \ O N E D R I V E - A R C A D I S \ G I N T B O R E L O G S \ H A R I R A A M \ C H E V R O N L O G S \ C H E V R O N 3 7 7 3 5 2 \ W O R K I N G \ A R C H I V E \ C H E V R O N 3 7 7 3 5 2 P R O J E C T . G P J W I L L M I N G T O N - . G D T 3 / 1 / 2 4 16 0 18 0 18 0 18 (0.0-0.17 ft) NOTE: Asphalt. (0.17-2.0 ft): SAND, very fine to very coarse, angular to subangular, some gravel, granules to very large pebbles, angular to round, little silt, little clay; medium dense, no plasticity, slow dilatancy, poorly sorted, moist, 2.5Y 4/3 - olive brown. NOTE: Fill. (1.5-2.0 ft) NOTE: Increase in clay. (2.0-3.5 ft): CLAY, some very fine to very coarse sand, angular, little silt; soft, low to medium plasticity, no dilatancy, dry, 2.5Y 6/3 - light yellowish brown. (3.5-6.5 ft): CLAY, little silt, trace very fine sand; soft, medium to high plasticity, no dilatancy, dry to moist, 2.5Y 6/3 - light yellowish brown. (5.5-6.5 ft) NOTE: Moist. (6.5-10.0 ft) No Recovery. (10.0-11.5 ft): SAND, very fine to very coarse, angular to subangular, little clay, trace silt; medium dense, poorly sorted, wet, 2.5Y 6/1 - gray, 5y 5/6 olive staining, lensed structure. NOTE: Clay in lenses (1/4” and can see where some taper off) (11.5-15.0 ft): No Recovery. (15.0-15.25 ft): SAND, fine to very coarse, angular to subangular, trace clay, trace gravel, small pebbles, round; loose, poorly sorted, wet, 2.5Y 5/2 - grayish brown. (15.25-16.5 ft): CLAY, trace silt; medium stiff, high plasticity, no dilatancy, moist to wet, 2.5Y 4/1 - dark gray, Iron, green, and yellowish staining staining. (16.5-20.0 ft) No Recovery. (20.0-21.5 ft): CLAY, little silt, trace very fine to medium sand, subangular; soft, high plasticity, slow dilatancy, wet, 2.5Y 5/1 - gray, iron oxide staining. NOTE: Sand lenses (can see them end mid core) End of boring at 21.5 ft bgs. Concrete Bentonite Chips #10/20 Sand End Cap 2 4 4 4 7 8 1 1 1 2 2 4 0.4 34.8 0.1 0.4 0.8 MW-14-S- 5.5-6.5 231018 MW-13-4-20-21.5 231018 NoYes Drilling Co.: Driller: Drilling Method: Drilling Rig: Remarks: Cascade Drilling Arturo Hollow-Stem Auger (HSA) CME TR7 J65 4234.710 Split-Spoon 5 ft Not Recorded 7.53 ft btoc 7436239.579 " = inches; ft = feet; bgs = below ground surface; PVC = polyvinyl chloride, PPM = parts per million Sampling Method: Sampling Interval: Water Level Start (ft. bgs.): Water Level Finish (ft. btoc.): Converted to Well: Surface Elev: North Coor: East Coor:1516890.336 Chevron 377352 - Salt Lake City, UT 30063755 13957th street Oakland CA 94607 US Project Name: Project Number: Project Location: Sheet: 1 of 1Soil Boring Log SampleInterval Recovery(in.) Logger: Reviewer: Lea Milando Minda Moe Date Started: Date Completed: Boring No.:MW-14 Depth(feet) 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 USCSClass Description WellConstructionDetails 10/18/2023 10/19/2023 BlowCounts PID(ppm)Sample ID CH E V R O N 3 7 7 3 5 2 C : \ U S E R S \ M K 1 9 3 2 \ O N E D R I V E - A R C A D I S \ G I N T B O R E L O G S \ H A R I R A A M \ C H E V R O N L O G S \ C H E V R O N 3 7 7 3 5 2 \ W O R K I N G \ A R C H I V E \ C H E V R O N 3 7 7 3 5 2 P R O J E C T . G P J W I L L M I N G T O N - . G D T 3 / 1 / 2 4 16 0 18 0 18 0 18 (0.0-3.0 ft) No Recovery. NOTE: Top 8” is asphalt. (3.0-5.0 ft): CLAY, little silt, trace medium sand, subangular to subround; soft, high plasticity, no dilatancy, well sorted, dry, 2.5Y 5/4 - light olive brown. (5.0-5.5 ft) No Recovery. (5.5-6.25 ft): SILT, little clay, trace very fine sand; soft, low plasticity, rapid dilatancy, well sorted, dry to moist, 2.5Y 6/3 - light yellowish brown, moderate odor, hydrocarbon staining. (6.25-6.5 ft): SAND, very fine to fine and SILT, trace clay; soft, medium plasticity, rapid dilatancy, well sorted, moist to wet, 2.5Y 4/1 - dark gray. (6.5-10.0 ft) No Recovery. (10.0-10.5 ft): CLAY, trace silt; soft, high plasticity, no dilatancy, dry to moist, 2.5Y 7/3 - pale yellow, iron oxide staining. (10.5-11.0 ft): SAND, very fine to fine, little silt, trace clay; soft, no plasticity, rapid dilatancy, well sorted, moist, 2.5Y 5/1 - gray. (10.75-11.0 ft) NOTE: Wet. (11.0-11.5 ft): CLAY, some very fine sand, trace silt; very soft, medium to high plasticity, rapid dilatancy, wet, 2.5Y 7/2 - light gray, strong odor, iron oxide staining. (11.5-15.0 ft) No Recovery. (15.0-16.5 ft): SAND, fine to medium, angular to subround, trace clay, trace gravel, granules, subangular; very soft, no plasticity, poorly sorted, wet, 2.5Y 5/1 - gray. (16.5-20.0 ft) No Recovery. (20.0-20.5 ft): SAND, fine to medium, angular to subround, trace clay, trace gravel, granules, subangular; very soft, no plasticity, poorly sorted, wet, 2.5Y 5/1 - gray. (20.5-21.0 ft): CLAY, trace fine to coarse sand, subangular to subround, trace silt; soft, high plasticity, slow dilatancy, poorly sorted, wet, 2.5Y 5/1 - gray. (21.0-21.25 ft): SAND, very fine to fine and SILT, soft, rapid dilatancy, poorly sorted, moist to wet, 2.5Y 5/1 - gray. (21.25-21.5 ft): CLAY, some silt, trace very fine to medium sand, subangular to subround; soft, high plasticity, no dilatancy, poorly sorted, wet, 2.5Y 5/1 - gray. End of boring at 21.5 ft bgs. Concrete Bentonite #10/20 sand 2" 0.01-Slot Sch. 40 PVC Screen End Cap 5 5 5 2 2 2 10 30 26 5 4 3 0.1 0.4 101.3 9.0 0.1 NoYes Drilling Co.: Driller: Drilling Method: Drilling Rig: Remarks: Cascade Drilling Arturo Hollow-Stem Auger (HSA) CME TR7 J65 4234.663 Split-Spoon 5 ft Not Recorded 6.53 ft btoc 7436014.047 " = inches; ft = feet; bgs = below ground surface; PVC = polyvinyl chloride, PPM = parts per million Sampling Method: Sampling Interval: Water Level Start (ft. bgs.): Water Level Finish (ft. btoc.): Converted to Well: Surface Elev: North Coor: East Coor:1517087.743 Chevron 377352 - Salt Lake City, UT 30063755 13957th street Oakland CA 94607 US Project Name: Project Number: Project Location: Sheet: 1 of 1Soil Boring Log SampleInterval Recovery(in.) Logger: Reviewer: Lea Milando Minda Moe Date Started: Date Completed: Boring No.:MW-5 Depth(feet) 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 USCSClass Description WellConstructionDetails 10/24/2023 10/24/2023 BlowCounts PID(ppm)Sample ID CH E V R O N 3 7 7 3 5 2 C : \ U S E R S \ M K 1 9 3 2 \ O N E D R I V E - A R C A D I S \ G I N T B O R E L O G S \ H A R I R A A M \ C H E V R O N L O G S \ C H E V R O N 3 7 7 3 5 2 \ W O R K I N G \ A R C H I V E \ C H E V R O N 3 7 7 3 5 2 P R O J E C T . G P J W I L L M I N G T O N - . G D T 3 / 1 / 2 4 11 0 18 0 16 0 10 (0.0-0.16 ft) NOTE: Asphalt. (0.16-1.0 ft) No Recovery. (1.0-4.0 ft): SAND, very fine to fine, some silt, trace clay; soft, no to low plasticity, rapid dilatancy, well sorted, dry to moist, 2.5Y 5/6 - light olive brown, iron oxide staining, blocky structure. (4.0-6.25 ft): SAND, very fine to medium, subangular, trace silt; very soft, rapid dilatancy, poorly sorted, wet, 5Y 4/2 - olive gray, moderate odor, no staining. NOTE: 10% very fine sand. (6.25-6.5 ft): SAND, very fine to fine, little silt, little clay; soft, medium plasticity, slow dilatancy, well sorted, wet, 5Y 6/4 - pale olive, hydrocarbon staining. NOTE: Trace staining. (6.5-10.0 ft) No Recovery. (10.0-11.0 ft): SAND, very fine to medium, subangular, little silt, trace clay; very soft, low plasticity, rapid dilatancy, poorly sorted, wet, 5Y 4/2 - olive gray, moderate odor, no staining. NOTE: Trace black staining, little iron staining , micaceous. (11.0-11.5 ft): SAND, very fine to very coarse, angular to subangular, trace silt, trace clay; loose, no to low plasticity, rapid dilatancy, poorly sorted, wet, 5Y 5/4 - olive, green staining. NOTE: Micaceous. (11.25-11.5 ft) NOTE: 5y 5/3 Olive. (11.5-15.0 ft) No Recovery. (15.0-16.5 ft): SAND, fine to very coarse, angular to subangular, loose, no to low plasticity, rapid dilatancy, poorly sorted, wet, 2.5Y 5/1 - gray. (16.5-20.0 ft) No Recovery. (20.0-21.5 ft): SAND, fine to very coarse, angular to subangular, loose, no to low plasticity, rapid dilatancy, poorly sorted, wet, 2.5Y 5/1 - gray, lensed structure. NOTE: Micaceous, lenses with increased coarse to very coarse sand. End of boring at 21.5 ft bgs. Concrete Bentonite Chips #10/20 sand Natural Collapse/Sand Backfill 2" 0.01-Slot Sch. 40 PVC Screen End Cap 3 2 3 3 3 4 13 15 15 9 10 11 0.0 3.4 0.8 0.2 0.0 MW-6-S-3.5-4 231021 MW-6-S-5-6 231021 MW-6-S-20-21 231021 NoYes Drilling Co.: Driller: Drilling Method: Drilling Rig: Remarks: Cascade Drilling Arturo Hollow-Stem Auger (HSA) CME TR7 J65 4232.077 Split-Spoon 5 ft Not Recorded 4.53 ft btoc 7436197.251 " = inches; ft = feet; bgs = below ground surface; PVC = polyvinyl chloride, PPM = parts per million Sampling Method: Sampling Interval: Water Level Start (ft. bgs.): Water Level Finish (ft. btoc.): Converted to Well: Surface Elev: North Coor: East Coor:1517119.353 Chevron 377352 - Salt Lake City, UT 30063755 13957th street Oakland CA 94607 US Project Name: Project Number: Project Location: Sheet: 1 of 1Soil Boring Log SampleInterval Recovery(in.) Logger: Reviewer: Lea Milando Minda Moe Date Started: Date Completed: Boring No.:MW-6 Depth(feet) 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 USCSClass Description WellConstructionDetails 10/21/2023 10/21/2023 BlowCounts PID(ppm)Sample ID CH E V R O N 3 7 7 3 5 2 C : \ U S E R S \ M K 1 9 3 2 \ O N E D R I V E - A R C A D I S \ G I N T B O R E L O G S \ H A R I R A A M \ C H E V R O N L O G S \ C H E V R O N 3 7 7 3 5 2 \ W O R K I N G \ A R C H I V E \ C H E V R O N 3 7 7 3 5 2 P R O J E C T . G P J W I L L M I N G T O N - . G D T 3 / 1 / 2 4 0 12 0 18 0 (0.0-4.5 ft) No Recovery. (4.5-5.0 ft): SILT, little clay, trace fine to medium sand, angular to subangular; medium stiff, high plasticity, no dilatancy, poorly sorted, dry, 2.5Y 6/4 - light yellowish brown. (5.0-5.5 ft) No Recovery. (5.5-6.5 ft): CLAY, little silt; medium stiff, medium to high plasticity, no dilatancy, moist, 2.5Y 5/4 - light olive brown, iron oxide staining. (6.0-6.5 ft) (6.5-10.0 ft) No Recovery. (10.0-11.5 ft): SAND, fine to medium, subangular to subround, trace gravel, granules, angular to subangular; soft, well sorted, wet, 2.5Y 6/1 - gray, iron oxide staining. (11.5-15.0 ft) No Recovery. Concrete Bentonite Chips #10/20 sand 2" 0.01-Slot Sch. 40 PVC Screen 3 2 2 4 7 8 61.1 0.6 NoYes Drilling Co.: Driller: Drilling Method: Drilling Rig: Remarks: Cascade Drilling Arturo Hollow-Stem Auger (HSA) CME TR7 J65 4234.944 Split-Spoon 5 ft Not Recorded 6.89 ft btoc 7436050.512 " = inches; ft = feet; bgs = below ground surface; PVC = polyvinyl chloride, PPM = parts per million Sampling Method: Sampling Interval: Water Level Start (ft. bgs.): Water Level Finish (ft. btoc.): Converted to Well: Surface Elev: North Coor: East Coor:1517005.454 Chevron 377352 - Salt Lake City, UT 30063755 13957th street Oakland CA 94607 US Project Name: Project Number: Project Location: Sheet: 1 of 2Soil Boring Log SampleInterval Recovery(in.) Logger: Reviewer: Lea Milando Minda Moe Date Started: Date Completed: Boring No.:MW-7 Depth(feet) 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 USCSClass Description WellConstructionDetails 10/23/2023 10/23/2023 BlowCounts PID(ppm)Sample ID CH E V R O N 3 7 7 3 5 2 C : \ U S E R S \ M K 1 9 3 2 \ O N E D R I V E - A R C A D I S \ G I N T B O R E L O G S \ H A R I R A A M \ C H E V R O N L O G S \ C H E V R O N 3 7 7 3 5 2 \ W O R K I N G \ A R C H I V E \ C H E V R O N 3 7 7 3 5 2 P R O J E C T . G P J W I L L M I N G T O N - . G D T 3 / 1 / 2 4 18 0 18 (15.0-16.5 ft): CLAY, little silt, trace very fine sand; soft, medium to high plasticity, slow dilatancy, wet, 2.5Y 6/1 - gray, iron oxide staining. (16.5-20.0 ft) No Recovery. (20.0-20.5 ft): CLAY, little very fine to fine sand, angular to subround, little silt; soft, medium plasticity, slow dilatancy, wet, 2.5Y 5/2 - grayish brown, stratified structure. NOTE: Thin layers of sand+silt. (20.5-20.9 ft): CLAY, little silt, trace very fine to fine sand; soft, medium to high plasticity, slow dilatancy, wet, 2.5Y 3/1 - very dark gray. (20.9-21.0 ft): CLAY and SILT, trace very fine to fine sand; soft, high plasticity, slow dilatancy, wet, 2.5Y 2.5/1 - black, slight odor, hydrocarbon staining. (21.0-21.25 ft): CLAY, little silt; medium stiff, high plasticity, slow dilatancy, wet, 2.5Y 5/1 - gray. (21.25-21.5 ft): SAND, very fine to fine, trace silt, trace clay; medium stiff, no plasticity, rapid dilatancy, well sorted, wet, 2.5Y 5/1 - gray. End of boring at 21.5 ft bgs. 2" 0.01-Slot Sch. 40 PVC Screen End Cap 3 4 5 5 6 7 0.4 0.0 " = inches; ft = feet; bgs = below ground surface; PVC = polyvinyl chloride, PPM = parts per millionRemarks: Chevron 377352 - Salt Lake City, UT 30063755 13957th street Oakland CA 94607 US Project Name: Project Number: Project Location: Sheet: 2 of 2Soil Boring Log SampleInterval Recovery(in.) Logger: Reviewer: Lea Milando Minda Moe Date Started: Date Completed: Boring No.:MW-7 Depth(feet) 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 USCSClass Description WellConstructionDetails 10/23/2023 10/23/2023 BlowCounts PID(ppm)Sample ID CH E V R O N 3 7 7 3 5 2 C : \ U S E R S \ M K 1 9 3 2 \ O N E D R I V E - A R C A D I S \ G I N T B O R E L O G S \ H A R I R A A M \ C H E V R O N L O G S \ C H E V R O N 3 7 7 3 5 2 \ W O R K I N G \ A R C H I V E \ C H E V R O N 3 7 7 3 5 2 P R O J E C T . G P J W I L L M I N G T O N - . G D T 3 / 1 / 2 4 18 0 18 0 14 0 18 (0.0-0.33 ft) NOTE: Asphalt. (0.33-4.0 ft) NOTE: Fill underlain by black tarp. (4.0-6.5 ft): CLAY, little silt, trace gravel, small pebbles, angular, trace very fine to fine sand; medium stiff, high plasticity, no dilatancy, dry, 2.5Y 3/1 - very dark gray, strong odor, hydrocarbon staining. (6.5-10.0 ft) No Recovery. (10.0-10.5 ft): SAND, very fine to fine, little silt, trace clay; very soft, low plasticity, rapid dilatancy, well sorted, wet, 2.5Y 3/1 - very dark gray, strong odor, hydrocarbon staining. (10.5-10.6 ft): SAND, very fine to medium, subangular, little silt; very soft, low plasticity, rapid dilatancy, poorly sorted, wet, 2.5Y 4/1 - dark gray, hydrocarbon staining. (10.6-10.75 ft): SAND, very fine to very coarse, subangular, trace silt; very soft, low plasticity, rapid dilatancy, poorly sorted, wet, 2.5Y 2.5/1 - black, strong odor, hydrocarbon staining. (10.75-11.0 ft): SAND, very fine, little silt; medium stiff, rapid dilatancy, well sorted, wet, 5Y 6/2 - light olive gray. (11.0-11.25 ft): SAND, very fine to very coarse, subangular to subround, trace gravel, granules, subangular to subround; loose, poorly sorted, wet, 5Y 4/1 - dark gray. (11.25-11.5 ft): SAND, very fine to medium, subangular to subround, soft, poorly sorted, wet, 5Y 4/1 - dark gray. (11.5-15.0 ft) No Recovery. (15.0-16.5 ft): CLAY, trace fine sand, trace silt; very soft, high plasticity, no dilatancy, well sorted, wet, 2.5Y 5/1 - gray, iron oxide staining. (16.5-20.0 ft) No Recovery. (20.0-21.25 ft): CLAY, trace very fine sand, trace silt; very soft, high plasticity, no dilatancy, well sorted, wet, 2.5Y 5/1 - gray, iron oxide staining. (21.25-21.5 ft): SAND, very fine to fine, stiff, well sorted, moist to wet, 5Y 5/1 - gray. End of boring at 21.5 ft bgs. Concrete Bentonite Chips #10/20 sand 2" 0.01-Slot Sch. 40 PVC Screen End Cap 5 7 7 4 5 6 3 3 3 4 5 7 95.8 73.5 0.3 0.1 NoYes Drilling Co.: Driller: Drilling Method: Drilling Rig: Remarks: Cascade Drilling Arturo Hollow-Stem Auger (HSA) CME TR7 J65 4234.790 Split-Spoon 5 ft Not Recorded 6.82 ft btoc 7436046.795 " = inches; ft = feet; bgs = below ground surface; PVC = polyvinyl chloride, PPM = parts per million Sampling Method: Sampling Interval: Water Level Start (ft. bgs.): Water Level Finish (ft. btoc.): Converted to Well: Surface Elev: North Coor: East Coor:1516843.385 Chevron 377352 - Salt Lake City, UT 30063755 13957th street Oakland CA 94607 US Project Name: Project Number: Project Location: Sheet: 1 of 1Soil Boring Log SampleInterval Recovery(in.) Logger: Reviewer: Lea Milando Minda Moe Date Started: Date Completed: Boring No.:MW-8 Depth(feet) 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 USCSClass Description WellConstructionDetails 10/23/2023 10/24/2023 BlowCounts PID(ppm)Sample ID CH E V R O N 3 7 7 3 5 2 C : \ U S E R S \ M K 1 9 3 2 \ O N E D R I V E - A R C A D I S \ G I N T B O R E L O G S \ H A R I R A A M \ C H E V R O N L O G S \ C H E V R O N 3 7 7 3 5 2 \ W O R K I N G \ A R C H I V E \ C H E V R O N 3 7 7 3 5 2 P R O J E C T . G P J W I L L M I N G T O N - . G D T 3 / 1 / 2 4 18 0 18 0 18 0 17 (0.0-0.5 ft) NOTE: Asphalt. (0.5-2.5 ft) NOTE: Road base. (2.5-3.5 ft): CLAY, some silt, little very fine sand; soft, low plasticity, slow dilatancy, well sorted, dry, 2.5Y 5/4 - light olive brown. (3.0-3.5 ft) NOTE: Increased clay. (3.5-6.5 ft): CLAY, little silt, trace very fine sand; very soft, medium to high plasticity, no dilatancy, well sorted, dry to moist, 2.5Y 3/1 - very dark gray, strong odor, hydrocarbon staining. (5.0-6.5 ft) NOTE: Decreased staining. (6.5-10.0 ft) No Recovery. (10.0-10.75 ft): SAND, very fine to medium, subangular, trace silt, trace gravel, small pebbles, subangular to subround, trace clay; soft, no plasticity, rapid dilatancy, poorly sorted, wet, 2.5Y 4/1 - dark gray. (10.5-10.75 ft) (10.75-11.0 ft): SAND, very fine to very coarse, subangular to round, little clay, little gravel, small pebbles, subround, trace silt; medium dense, low plasticity, rapid dilatancy, poorly sorted, wet, 2.5Y 5/4 - light olive brown, hydrocarbon staining. (11.0-11.5 ft): CLAY, little very fine sand, little silt; soft, high plasticity, no dilatancy, well sorted, moist to wet, 5Y 6/2 - light olive gray, iron oxide staining. (11.5-15.0 ft) No Recovery. (15.0-15.25 ft): SAND, very fine to medium, subangular, little clay, trace silt; very soft, rapid dilatancy, poorly sorted, wet, 5Y 4/1 - dark gray. (15.25-16.5 ft): CLAY, little silt; soft, high plasticity, no dilatancy, moist to wet, 2.5Y 6/2 - light brownish gray, iron oxide staining. (16.5-20.0 ft) No Recovery. (20.0-21.0 ft): CLAY, some silt, trace medium sand, subangular; very soft, high plasticity, slow dilatancy, well sorted, moist to wet, 2.5Y 6/2 - light brownish gray, iron oxide staining. (21.0-21.5 ft): SAND, very fine to fine, stiff, well sorted, wet, 5Y 4/1 - dark gray. End of boring at 21.5 ft bgs. Concrete Bentonite Chips #10/20 Sand 2" 0.01-Slot Sch. 40 PVC Screen End Cap 3 2 2 3 2 2 5 6 8 7.6 247.1 96.9 6.5 0.5 5.5 NoYes Drilling Co.: Driller: Drilling Method: Drilling Rig: Remarks: Cascade Drilling Arturo Hollow-Stem Auger (HSA) CME TR7 J65 4234.231 Split-Spoon 5 ft Not Recorded 6.98 ft btoc 7436080.035 " = inches; ft = feet; bgs = below ground surface; PVC = polyvinyl chloride, PPM = parts per million Sampling Method: Sampling Interval: Water Level Start (ft. bgs.): Water Level Finish (ft. btoc.): Converted to Well: Surface Elev: North Coor: East Coor:1516840.781 Chevron 377352 - Salt Lake City, UT 30063755 13957th street Oakland CA 94607 US Project Name: Project Number: Project Location: Sheet: 1 of 1Soil Boring Log SampleInterval Recovery(in.) Logger: Reviewer: Lea Milando Minda Moe Date Started: Date Completed: Boring No.:MW-9 Depth(feet) 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 USCSClass Description WellConstructionDetails 10/20/2023 10/20/2023 BlowCounts PID(ppm)Sample ID CH E V R O N 3 7 7 3 5 2 C : \ U S E R S \ M K 1 9 3 2 \ O N E D R I V E - A R C A D I S \ G I N T B O R E L O G S \ H A R I R A A M \ C H E V R O N L O G S \ C H E V R O N 3 7 7 3 5 2 \ W O R K I N G \ A R C H I V E \ C H E V R O N 3 7 7 3 5 2 P R O J E C T . G P J W I L L M I N G T O N - . G D T 3 / 1 / 2 4 Appendix D Well Sampling Forms Time 13:16 Sample Information Sample ID:MW-1-W-231031 Sample Time:13:25 Sample Depth (ft-bmp) (e.g. pump intake):13.5 Analytes and Methods:See Chain-of-Custody.Depth to Water at Time of Sampling 7.23 Well Casing Volume Conversion Well diameter (in.) = gallons per foot 1 = 0.04 1.5 = 0.09 2.5 = 0.26 3.5 = 0.50 6 = 1.47 1.25 = 0.06 2 = 0.16 3 = 0.37 4 = 0.65 0.95 20.00 -235.1 Clear Comments:None NA 7.23 7.68 13.5 29.4 Depth to Water (ft) pH (standard units) Conductivity (mS/cm) Turbidity (NTU) Dissolved Oxygen (mg/L) Temperature (°C) Redox (mV) Color MW-1-W- 231031 Purge Equipment Peristaltic Purge Start --Gallons Purged Duplicate ID --Sample Equipment Peristaltic Purge End --Total Purge Time(h:m) -- Sample Time 13:25 Well Volumes Purged N/A Sample ID 12.33 Gallons in Well 2 Water Quality Meter Make/Model YSI Pro Quatro Purge Method Grab sample Collection Type Grab Static Water Level (ft-bmp)7.77 Total Depth (ft-bmp)20.1 Water Column(ft) Sampled by Bridger Cherry Measuring Point Description Top of Casing Screen Depth Interval (ft-bmp)5 to 20 Casing Diameter (in.)2 Well Casing Material PVC Site Location Salt Lake City, Utah Site ID 377352 Weather(°F)Clear Chevron Groundwater Sampling Form Project Number 30064298 Well ID MW-1 Date 10/31/2023 ft-bmp = feet below measuring point mS/cm = milliSiemens per centimeter mV = millivolts in. = inches NTU = Nephe Time 14:39 14:44 14:49 14:54 14:59 15:04 15:09 15:14 15:19 15:24 15:29 15:34 15:39 15:44 15:49 Sample Information Sample ID:MW-2-W-231031 Sample Time:16:00 Sample Depth (ft-bmp) (e.g. pump intake):13.5 Analytes and Methods:See Chain-of-Custody.Depth to Water at Time of Sampling 6.92 Well Casing Volume Conversion Well diameter (in.) = gallons per foot 1 = 0.04 1.5 = 0.09 2.5 = 0.26 3.5 = 0.50 6 = 1.47 1.25 = 0.06 2 = 0.16 3 = 0.37 4 = 0.65 0.31 20.30 -243.9 Clear Comments:None 125 6.92 7.52 6.61 4.1 0.30 20.50 -247.2 Clear 125 6.92 7.55 6.71 3.6 0.39 20.10 -246.7 Clear 125 6.92 7.21 6.80 3.9 0.32 20.30 -249.1 Clear 125 6.92 7.54 6.96 3.9 0.36 20.30 -247.7 Clear 125 6.92 7.57 7.13 3.8 0.48 20.30 -247.3 Clear 125 6.92 7.57 7.41 3.7 0.45 20.10 -248.1 Clear 125 6.92 7.59 7.69 4.8 0.50 20.20 -279.4 Clear 125 6.92 7.56 8.12 4.9 0.46 20.40 -249.3 Clear 125 6.92 7.50 8.44 4.5 0.54 20.50 -256.4 Clear 125 6.92 7.59 8.78 4.7 0.57 20.40 -252.8 Clear 125 6.92 7.60 9.83 4.6 1.26 20.60 -250.1 Clear 125 6.93 7.86 10.8 5.2 0.72 20.60 -251.4 Clear 125 6.92 7.66 12.1 8.4 0.73 20.50 -231.7 Clear 125 6.92 7.66 13.9 9.8 0.55 20.50 -246.3 Clear 125 6.92 7.78 14.9 21.2 Rate (ml/min) Depth to Water (ft) pH (standard units) Conductivity (mS/cm) Turbidity (NTU) Dissolved Oxygen (mg/L) Temperature (°C) Redox (mV) Color MW-2-W- 231031 Purge Equipment Peristaltic Purge Start 14:34 Gallons Purged 2.64 Duplicate ID --Sample Equipment Peristaltic Purge End 15:54 Total Purge Time(h:m) 1:20 Sample Time 16:00 Well Volumes Purged 1.21 Sample ID 13.41 Gallons in Well 2.18 Water Quality Meter Make/Model YSI Pro Quatro Purge Method Low-Flow Collection Type Grab Static Water Level (ft-bmp)7.67 Total Depth (ft-bmp)21.08 Water Column(ft) Sampled by Bridger Cherry Measuring Point Description Top of Casing Screen Depth Interval (ft-bmp)5 to 20 Casing Diameter (in.) 2 Well Casing Material PVC Site Location Salt Lake City, Utah Site ID 377352 Weather(°F)Clear Chevron Groundwater Sampling Form Project Number 30064298 Well ID MW-2 Date 10/31/2023 ft-bmp = feet below measuring point mS/cm = milliSiemens per centimeter mV = millivolts in. = inches NTU = Nephe Time 09:05 09:10 09:15 09:20 09:25 09:30 09:35 09:40 09:45 09:50 09:55 10:00 10:05 10:10 13.5 Analytes and Methods:See Chain-of-Custody.Depth to Water at Time of Sampling 7.65 Sample ID:MW-3-W-231101 Sample Time:10:20 Sample Depth (ft-bmp) (e.g. pump intake): Well diameter (in.) = gallons per foot 1 = 0.04 1.5 = 0.09 2.5 = 0.26 3.5 = 0.50 6 = 1.47 1.25 = 0.06 2 = 0.16 3 = 0.37 4 = 0.65 Sample Information Comments:None Well Casing Volume Conversion 0.68 19.70 -263.2 Clear 100 7.65 8.05 2.06 4.9 0.63 19.40 -260.7 Clear 100 7.69 8.01 2.03 4.5 0.44 19.70 -266.6 Clear 100 7.68 8.03 1.99 3.9 0.68 19.80 -264.4 Clear 100 7.6 8.05 2.00 3.9 0.28 19.60 -268.9 Clear 100 7.54 8.08 2.04 4.4 0.29 19.70 -268 Clear 100 7.39 7.96 2.15 4.1 0.47 19.10 -262.7 Clear 100 7.27 8.16 2.20 8.3 0.28 19.70 -269.2 Clear 100 7.17 8.20 3.04 5.8 0.51 19.30 -254.2 Clear 100 7.21 8.21 3.48 8.8 0.49 19.40 -260.3 Clear 100 7.08 8.25 3.62 14.5 0.75 18.60 -244 Clear 100 6.96 8.25 3.69 16.2 0.55 18.60 -248.3 Clear 100 6.95 8.38 3.74 17.7 1.29 18.40 -299.9 Clear 100 6.93 8.34 3.76 22.0 0.81 18.60 -240.6 Clear 100 6.78 8.16 3.77 23.4 Rate (ml/min) Depth to Water (ft) pH (standard units) Conductivity (mS/cm) Turbidity (NTU) Dissolved Oxygen (mg/L) Temperature (°C) Redox (mV) Color MW-3-W- 231101 Purge Equipment Peristaltic Purge Start 09:02 Gallons Purged 1.72 Duplicate ID --Sample Equipment Peristaltic Purge End 10:12 Total Purge Time(h:m) 1:10 Sample Time 10:20 Well Volumes Purged 0.87 Sample ID 12.16 Gallons in Well 1.98 Water Quality Meter Make/Model YSI Pro Quatro Purge Method Low-Flow Collection Type Grab Static Water Level (ft-bmp)6.41 Total Depth (ft-bmp)18.57 Water Column(ft) Sampled by Bridger Cherry Measuring Point Description Top of Casing Screen Depth Interval (ft-bmp)5 to 20 Casing Diameter (in.)2 Well Casing Material PVC Site Location Salt Lake City, Utah Site ID 377352 Weather(°F)Clear Chevron Groundwater Sampling Form Project Number 30064298 Well ID MW-3 Date 11/1/2023 ft-bmp = feet below measuring point mS/cm = milliSiemens per centimeter mV = millivolts in. = inches NTU = Nephe Time 14:50 14:55 15:00 15:05 15:10 15:15 15:20 15:25 15:30 15:35 15:40 15:45 15:50 Sample Information Sample ID:MW-4-W-231101 Sample Time:16:05 Sample Depth (ft-bmp) (e.g. pump intake):13.5 Analytes and Methods:See Chain-of-Custody.Depth to Water at Time of Sampling 8.89 Well Casing Volume Conversion Well diameter (in.) = gallons per foot 1 = 0.04 1.5 = 0.09 2.5 = 0.26 3.5 = 0.50 6 = 1.47 1.25 = 0.06 2 = 0.16 3 = 0.37 4 = 0.65 0.38 19.80 -275 Clear Comments:None 100 8.71 7.55 3.73 5.3 0.35 19.60 -272.8 Clear 100 8.68 7.56 3.74 6.0 0.37 19.70 -273.6 Clear 100 8.69 7.56 3.76 6.1 0.38 19.70 -270.1 Clear 100 8.71 7.55 3.79 7.4 0.38 19.60 -271.3 Clear 100 8.75 7.54 3.80 9.3 0.42 19.70 -266.9 Clear 100 8.78 7.54 3.83 14.8 0.38 19.70 -269 Clear 100 8.81 7.53 3.85 21.4 0.40 19.80 -262.5 Gray 100 8.91 7.39 3.84 32.2 0.43 19.80 -264.3 Gray 100 8.99 7.47 3.83 37.9 0.27 20.00 -257.5 Gray 120 9.11 7.45 3.86 47.6 0.44 19.90 -259.3 Gray 120 9.05 7.40 3.84 50.1 0.72 20.00 -257.7 Gray 180 8.7 7.38 3.79 36.1 0.53 20.20 -258.9 Gray 180 7.93 7.41 3.83 19.8 Rate (ml/min) Depth to Water (ft) pH (standard units) Conductivity (mS/cm) Turbidity (NTU) Dissolved Oxygen (mg/L) Temperature (°C) Redox (mV) Color MW-4-W- 231101 Purge Equipment Peristaltic Purge Start 14:45 Gallons Purged 2.11 Duplicate ID BD-1-W-231101 Sample Equipment Peristaltic Purge End 15:55 Total Purge Time(h:m) 1:10 Sample Time 16:05 Well Volumes Purged 1.13 Sample ID 11.53 Gallons in Well 1.87 Water Quality Meter Make/Model YSI Pro Quatro Purge Method Low-Flow Collection Type Grab Static Water Level (ft-bmp)6.11 Total Depth (ft-bmp)17.64 Water Column(ft) Sampled by Bridger Cherry Measuring Point Description Top of Casing Screen Depth Interval (ft-bmp)5 to 20 Casing Diameter (in.) 2 Well Casing Material PVC Site Location Salt Lake City, Utah Site ID 377352 Weather(°F)Clear Chevron Groundwater Sampling Form Project Number 30064298 Well ID MW-4 Date 11/1/2023 ft-bmp = feet below measuring point mS/cm = milliSiemens per centimeter mV = millivolts in. = inches NTU = Nephe Time 11:05 11:10 11:15 11:20 11:25 11:30 11:35 Sample Information Sample ID:MW-5-W-231103 Sample Time:11:45 Sample Depth (ft-bmp) (e.g. pump intake):13.5 Analytes and Methods:See Chain-of-Custody.Depth to Water at Time of Sampling 6.59 Well Casing Volume Conversion Well diameter (in.) = gallons per foot 1 = 0.04 1.5 = 0.09 2.5 = 0.26 3.5 = 0.50 6 = 1.47 1.25 = 0.06 2 = 0.16 3 = 0.37 4 = 0.65 0.48 19.30 -240.1 Clear Comments:None 100 6.59 7.95 3.67 6.8 0.50 19.20 -233.9 Clear 100 6.59 7.94 3.68 6.7 0.42 19.20 -236.2 Clear 100 6.59 7.94 3.67 6.6 0.67 19.20 -220.1 Clear 100 6.59 7.95 3.67 6.1 0.59 19.10 -227.6 Clear 100 6.59 7.95 3.69 6.4 0.76 19.30 -202.5 Clear 100 6.6 7.96 3.68 6.8 0.74 19.20 -213.4 Clear 100 6.6 7.95 3.71 4.1 Rate (ml/min) Depth to Water (ft) pH (standard Conductivity (mS/cm) Turbidity (NTU) Dissolved Oxygen (mg/L) Temperature (°C) Redox (mV) Color MW-5-W- 231103 Purge Equipment Peristaltic Purge Start 11:02 Gallons Purged 0.95 Duplicate ID --Sample Equipment Peristaltic Purge End 11:36 Total Purge Time(h:m) 0:34 Sample Time 11:45 Well Volumes Purged 0.43 Sample ID 13.69 Gallons in Well 2.22 Water Quality Meter Make/Model YSI Pro Quatro Purge Method Low-Flow Collection Type Grab Static Water Level (ft-bmp)6.58 Total Depth (ft-bmp)20.27 Water Column(ft) Sampled by Bridger Cherry Measuring Point Description Top of Casing Screen Depth Interval (ft-bmp)5 to 20 Casing Diameter (in.) 2 Well Casing Material PVC Site Location Salt Lake City, Utah Site ID 377352 Weather(°F)Clear Chevron Groundwater Sampling Form Project Number 30064298 Well ID MW-5 Date 11/3/2023 ft-bmp = feet below measuring point mS/cm = milliSiemens per centimeter mV = millivolts in. = inches NTU = Nephe Time 08:35 08:40 08:45 08:50 08:55 09:00 09:05 09:10 09:15 09:20 09:25 09:30 09:35 09:40 12 Analytes and Methods:See Chain-of-Custody.Depth to Water at Time of Sampling 4.59 Sample ID:MW-6-W-231102 Sample Time:09:50 Sample Depth (ft-bmp) (e.g. pump intake): Well diameter (in.) = gallons per foot 1 = 0.04 1.5 = 0.09 2.5 = 0.26 3.5 = 0.50 6 = 1.47 1.25 = 0.06 2 = 0.16 3 = 0.37 4 = 0.65 Sample Information Comments:None Well Casing Volume Conversion 0.95 17.70 -226.2 Clear 100 4.59 7.73 3.32 21.3 0.91 17.70 -226.9 Clear 100 4.59 7.74 3.31 21.1 1.03 17.50 -225 Clear 100 4.59 7.73 3.31 20.8 0.98 17.40 -225 Clear 100 4.59 7.73 3.32 21.4 1.17 18.10 -224.9 Clear 100 4.59 7.73 3.31 15.9 1.05 18.20 -226.1 Clear 100 4.59 7.73 3.31 15.4 1.34 18.20 -220.6 Clear 100 4.59 7.73 3.31 14.9 1.31 18.00 -223.2 Clear 100 4.59 7.74 3.31 14.3 1.69 17.90 -215.1 Clear 100 4.59 7.74 3.31 13.9 1.50 18.10 -218.5 Clear 100 4.59 7.74 3.30 13.0 0.97 17.70 -203.5 Clear 100 4.59 7.74 3.26 16.8 1.25 18.10 -209.6 Clear 100 4.59 7.74 3.26 23.3 1.16 17.70 -181.4 Clear 100 4.59 7.79 3.25 29.4 0.91 17.60 -195 Clear 125 4.6 7.79 3.24 36.8 Rate (ml/min) Depth to Water (ft) pH (standard units) Conductivity (mS/cm) Turbidity (NTU) Dissolved Oxygen (mg/L) Temperature (°C) Redox (mV) Color MW-6-W- 231102 Purge Equipment Peristaltic Purge Start 08:30 Gallons Purged 2.01 Duplicate ID --Sample Equipment Peristaltic Purge End 09:45 Total Purge Time(h:m) 1:15 Sample Time 09:50 Well Volumes Purged 0.85 Sample ID 14.52 Gallons in Well 2.36 Water Quality Meter Make/Model YSI Pro Quatro Purge Method Low-Flow Collection Type Grab Static Water Level (ft-bmp)4.58 Total Depth (ft-bmp)19.1 Water Column(ft) Sampled by Bridger Cherry Measuring Point Description Ground Surface Screen Depth Interval (ft-bmp)5 to 20 Casing Diameter (in.) 2 Well Casing Material PVC Site Location Salt Lake City, Utah Site ID 377352 Weather(°F)Clear Chevron Groundwater Sampling Form Project Number 30064298 Well ID MW-6 Date 11/2/2023 ft-bmp = feet below measuring point mS/cm = milliSiemens per centimeter mV = millivolts in. = inches NTU = Nephe Time 09:45 09:50 09:55 10:00 10:05 10:10 10:15 10:20 13.5 Analytes and Methods:See Chain-of-Custody.Depth to Water at Time of Sampling 7.04 Sample ID:MW-7-W-231103 Sample Time:10:30 Sample Depth (ft-bmp) (e.g. pump intake): Well diameter (in.) = gallons per foot 1 = 0.04 1.5 = 0.09 2.5 = 0.26 3.5 = 0.50 6 = 1.47 1.25 = 0.06 2 = 0.16 3 = 0.37 4 = 0.65 Sample Information Comments:None Well Casing Volume Conversion 0.39 23.10 -183 Clear 100 7.04 7.42 3.76 4.5 0.35 23.00 -177.4 Clear 100 7.04 7.41 3.74 4.1 0.51 22.70 -184.1 Clear 100 7.04 7.41 3.75 4.8 0.48 22.80 -184.8 Clear 100 7.04 7.42 3.74 6.3 0.57 22.50 -177 Clear 100 7.03 7.41 3.73 7.8 0.50 22.50 -181.1 Clear 100 7.03 7.42 3.74 9.9 1.58 21.80 -152.1 Clear 100 7.03 7.44 3.78 12.4 0.89 22.30 -169.4 Clear 100 7.02 7.47 3.87 26.3 Rate (ml/min) Depth to Water (ft) pH (standard units) Conductivity (mS/cm) Turbidity (NTU) Dissolved Oxygen (mg/L) Temperature (°C) Redox (mV) Color MW-7-W- 231103 Purge Equipment Peristaltic Purge Start 09:40 Gallons Purged 1.06 Duplicate ID --Sample Equipment Peristaltic Purge End 10:20 Total Purge Time(h:m) 0:40 Sample Time 10:30 Well Volumes Purged 0.49 Sample ID 13.24 Gallons in Well 2.15 Water Quality Meter Make/Model YSI Pro Quatro Purge Method Low-Flow Collection Type Grab Static Water Level (ft-bmp)6.99 Total Depth (ft-bmp)20.23 Water Column(ft) Sampled by Bridger Cherry Measuring Point Description Top of Casing Screen Depth Interval (ft-bmp)5 to 20 Casing Diameter (in.) 2 Well Casing Material Site Location Salt Lake City, Utah Site ID 377352 Weather(°F)Clear Chevron Groundwater Sampling Form Project Number 30064298 Well ID MW-7 Date 11/3/2023 ft-bmp = feet below measuring point mS/cm = milliSiemens per centimeter mV = millivolts in. = inches NTU = Nephe Time 08:02 08:07 08:12 08:17 08:22 08:27 08:32 08:37 08:42 08:47 13.5 Analytes and Methods:See Chain-of-Custody.Depth to Water at Time of Sampling 6.98 Sample ID:MW-8-W-231103 Sample Time:08:55 Sample Depth (ft-bmp) (e.g. pump intake): Well diameter (in.) = gallons per foot 1 = 0.04 1.5 = 0.09 2.5 = 0.26 3.5 = 0.50 6 = 1.47 1.25 = 0.06 2 = 0.16 3 = 0.37 4 = 0.65 Sample Information Comments:None Well Casing Volume Conversion 0.39 21.60 -247.3 Clear 100 6.98 7.63 4.43 4.2 0.35 21.70 -247.7 Clear 100 6.98 7.63 4.43 3.6 0.48 21.80 -248 Clear 100 6.99 7.63 4.42 4.9 0.44 21.70 -247.1 Clear 100 7 7.63 4.40 6.5 0.71 22.20 -248.6 Clear 100 7.01 7.63 4.38 8.9 0.59 22.10 -249.1 Clear 100 7.01 7.64 4.38 12.5 1.36 22.10 -243.6 Clear 100 6.98 7.65 4.44 16.0 1.03 21.40 -245.4 Clear 100 7 7.68 4.85 22.0 1.85 21.20 -231.5 Clear 100 6.99 7.74 5.16 44.7 1.52 21.80 -240.3 Clear 100 6.98 7.73 5.16 26.2 Rate (ml/min) Depth to Water (ft) pH (standard units) Conductivity (mS/cm) Turbidity (NTU) Dissolved Oxygen (mg/L) Temperature (°C) Redox (mV) Color MW-8-W- 231103 Purge Equipment Peristaltic Purge Start 07:58 Gallons Purged 1.40 Duplicate ID --Sample Equipment Peristaltic Purge End 08:48 Total Purge Time(h:m) 0:50 Sample Time 08:55 Well Volumes Purged 0.65 Sample ID 13.27 Gallons in Well 2.16 Water Quality Meter Make/Model YSI Pro Quatro Purge Method Low-Flow Collection Type Grab Static Water Level (ft-bmp)6.92 Total Depth (ft-bmp)20.19 Water Column(ft) Sampled by Bridger Cherry Measuring Point Description Top of Casing Screen Depth Interval (ft-bmp)5 to 20 Casing Diameter (in.) 2 Well Casing Material PVC Site Location Salt Lake City, Utah Site ID 377352 Weather(°F)Clear Chevron Groundwater Sampling Form Project Number 30064298 Well ID MW-8 Date 11/3/2023 ft-bmp = feet below measuring point mS/cm = milliSiemens per centimeter mV = millivolts in. = inches NTU = Nephe Time 12:50 12:55 13:00 13:05 13:10 13:15 13:20 13:25 13:30 13:35 13:40 13:45 13:50 Sample Information Sample ID:MW-9-W-231101 Sample Time:14:00 Sample Depth (ft-bmp) (e.g. pump intake):13.5 Analytes and Methods:See Chain-of-Custody.Depth to Water at Time of Sampling 6.78 Well Casing Volume Conversion Well diameter (in.) = gallons per foot 1 = 0.04 1.5 = 0.09 2.5 = 0.26 3.5 = 0.50 6 = 1.47 1.25 = 0.06 2 = 0.16 3 = 0.37 4 = 0.65 0.50 19.00 -223.9 Clear Comments:None 100 6.78 7.44 7.01 3.0 0.54 19.00 -222.9 Clear 100 6.78 7.46 7.05 3.4 0.52 18.90 -223.8 Clear 100 6.78 7.45 7.04 3.5 0.61 18.90 -222.3 Clear 100 6.78 7.46 7.11 5.7 0.56 18.90 -222.5 Clear 100 6.78 7.45 7.25 10.6 0.74 19.50 -223.3 Clear 100 6.78 7.46 7.31 21.1 0.62 19.00 -222.2 Clear 100 6.82 7.42 6.91 43.9 1.04 19.20 -222.5 Clear 100 6.8 7.45 6.79 5.6 0.83 19.20 -219.7 Clear 100 6.79 7.46 6.64 7.9 1.70 19.00 -223.1 Clear 100 6.78 7.51 6.41 13.8 1.33 19.10 -222.2 Clear 100 6.77 7.53 6.13 21.7 1.26 18.80 -219.4 Clear 100 6.77 7.55 6.05 24.4 1.34 19.00 -221.7 Clear 100 6.79 7.56 6.05 19.5 Rate (ml/min) Depth to Water (ft) pH (standard units) Conductivity (mS/cm) Turbidity (NTU) Dissolved Oxygen (mg/L) Temperature (°C) Redox (mV) Color MW-9-W- 231101 Purge Equipment Peristaltic Purge Start 12:45 Gallons Purged 1.72 Duplicate ID --Sample Equipment Peristaltic Purge End 13:50 Total Purge Time(h:m) 1:5 Sample Time 14:00 Well Volumes Purged 0.81 Sample ID 12.97 Gallons in Well 2.11 Water Quality Meter Make/Model YSI Pro Quatro Purge Method Low-Flow Collection Type Grab Static Water Level (ft-bmp)7.03 Total Depth (ft-bmp)20 Water Column(ft) Sampled by Bridger Cherry Measuring Point Description Top of Casing Screen Depth Interval (ft-bmp)5 to 20 Casing Diameter (in.) 2 Well Casing Material PVC Site Location Salt Lake City, Utah Site ID 377352 Weather(°F)Clear Chevron Groundwater Sampling Form Project Number 30064298 Well ID MW-9 Date 11/1/2023 ft-bmp = feet below measuring point mS/cm = milliSiemens per centimeter mV = millivolts in. = inches NTU = Nephe Time 11:58 Sample Information Sample ID:MW-10-W-231031 Sample Time:12:05 Sample Depth (ft-bmp) (e.g. pump intake):17 Analytes and Methods:See Chain-of-Custody.Depth to Water at Time of Sampling 6.72 Well Casing Volume Conversion Well diameter (in.) = gallons per foot 1 = 0.04 1.5 = 0.09 2.5 = 0.26 3.5 = 0.50 6 = 1.47 1.25 = 0.06 2 = 0.16 3 = 0.37 4 = 0.65 0.98 18.50 -187.7 Clear Comments:None NA 6.73 7.84 5.67 32.0 Depth to Water (ft) pH (standard units) Conductivity (mS/cm) Turbidity (NTU) Dissolved Oxygen (mg/L) Temperature (°C) Redox (mV) Color MW-10-W- 231031 Purge Equipment Peristaltic Purge Start --Gallons Purged 0.08 Duplicate ID --Sample Equipment Peristaltic Purge End --Total Purge Time(h:m) -- Sample Time 12:05 Well Volumes Purged 0.03 Sample ID 18 Gallons in Well 2.92 Water Quality Meter Make/Model YSI Pro Quatro Purge Method Grab sample Collection Type Grab Static Water Level (ft-bmp)7.02 Total Depth (ft-bmp)25.02 Water Column(ft) Sampled by Bridger Cherry Measuring Point Description Top of Casing Screen Depth Interval (ft-bmp)5 to 20 Casing Diameter (in.) 2 Well Casing Material PVC Site Location Salt Lake City, Utah Site ID 377352 Weather(°F)Clear Chevron Groundwater Sampling Form Project Number 30064298 Well ID MW-10 Date 10/31/2023 ft-bmp = feet below measuring point mS/cm = milliSiemens per centimeter mV = millivolts in. = inches NTU = Nephe Time 15:38 15:43 15:48 15:53 15:58 16:03 16:08 16:13 16:18 16:23 16:28 16:33 16:38 Sample Information Sample ID:MW-11-W-231030 Sample Time:16:40 Sample Depth (ft-bmp) (e.g. pump intake):13.4 Analytes and Methods:See Chain-of-Custody.Depth to Water at Time of Sampling 6.93 Well Casing Volume Conversion Well diameter (in.) = gallons per foot 1 = 0.04 1.5 = 0.09 2.5 = 0.26 3.5 = 0.50 6 = 1.47 1.25 = 0.06 2 = 0.16 3 = 0.37 4 = 0.65 0.22 20.10 -216.9 Clear Comments:None 180 6.93 7.32 4.49 6.7 0.24 20.10 -214.8 Clear 180 6.93 7.33 4.49 7.9 0.22 20.00 -216.6 Clear 180 6.93 7.31 4.50 10.0 0.38 20.00 -213.2 Clear 180 6.93 7.30 4.50 11.8 0.29 20.20 -214.5 Clear 180 6.93 7.31 4.51 13.2 0.25 20.00 -211.4 Clear 180 6.93 7.29 4.52 16.5 0.24 20.00 -212.2 Clear 180 6.92 7.33 4.58 16.0 0.31 19.90 -208.3 Clear 180 6.92 7.27 4.61 19.0 0.27 20.00 -209.9 Clear 180 6.92 7.27 4.68 26.9 0.41 19.80 -209.5 Clear 180 6.92 7.35 4.94 36.2 0.35 19.90 -208.9 Clear 180 6.92 7.65 5.17 50.2 0.59 19.90 -224.6 Clear 180 6.92 7.53 5.45 58.6 0.44 19.80 -212.6 Clear 240 6.93 7.46 7.27 80.9 Rate (ml/min) Depth to Water (ft) pH (standard units) Conductivity (mS/cm) Turbidity (NTU) Dissolved Oxygen (mg/L) Temperature (°C) Redox (mV) Color MW-11-W- 231030 Purge Equipment Peristaltic Purge Start 15:33 Gallons Purged 3.25 Duplicate ID --Sample Equipment Peristaltic Purge End 16:40 Total Purge Time(h:m) 1:7 Sample Time 16:40 Well Volumes Purged 1.49 Sample ID 13.43 Gallons in Well 2.18 Water Quality Meter Make/Model YSI Pro Quatro Purge Method Low-Flow Collection Type Grab Static Water Level (ft-bmp)6.87 Total Depth (ft-bmp)20.3 Water Column(ft) Sampled by Lauren Lindham Measuring Point Description Top of Casing Screen Depth Interval (ft-bmp)5 to 20 Casing Diameter (in.)2 Well Casing Material PVC Site Location Salt Lake City, Utah Site ID 377352 Weather(°F)Clear Chevron Groundwater Sampling Form Project Number 30064298 Well ID MW-11 Date 10/30/2023 ft-bmp = feet below measuring point mS/cm = milliSiemens per centimeter mV = millivolts in. = inches NTU = Nephe Time 16:00 Sample Information Sample ID:MW-12-W-231102 Sample Time:16:05 Sample Depth (ft-bmp) (e.g. pump intake):14 Analytes and Methods:See Chain-of-Custody.Depth to Water at Time of Sampling 7.09 Well Casing Volume Conversion Well diameter (in.) = gallons per foot 1 = 0.04 1.5 = 0.09 2.5 = 0.26 3.5 = 0.50 6 = 1.47 1.25 = 0.06 2 = 0.16 3 = 0.37 4 = 0.65 1.95 21.60 -219.7 Clear Comments:None NA 7.09 7.67 10.8 19.6 Depth to Water (ft) pH (standard units) Conductivity (mS/cm) Turbidity (NTU) Dissolved Oxygen (mg/L) Temperature (°C) Redox (mV) Color MW-12-W- 231102 Purge Equipment Peristaltic Purge Start 15:55 Gallons Purged 0.13 Duplicate ID --Sample Equipment Peristaltic Purge End --Total Purge Time(h:m) 15:55 Sample Time 16:05 Well Volumes Purged 0.07 Sample ID 12.13 Gallons in Well 1.97 Water Quality Meter Make/Model YSI Pro Quatro Purge Method Grab Collection Type Grab Static Water Level (ft-bmp)7.73 Total Depth (ft-bmp)19.86 Water Column(ft) Sampled by Bridger Cherry Measuring Point Description Top of Casing Screen Depth Interval (ft-bmp)5 to 20 Casing Diameter (in.) 2 Well Casing Material PVC Site Location Salt Lake City, Utah Site ID 377352 Weather(°F)Clear Chevron Groundwater Sampling Form Project Number 30064298 Well ID MW-12 Date 11/2/2023 ft-bmp = feet below measuring point mS/cm = milliSiemens per centimeter mV = millivolts in. = inches NTU = Nephe Time 10:55 11:00 11:05 11:10 11:15 11:20 11:25 11:30 11:35 11:40 11:45 11:50 11:55 Sample Information Sample ID:MW-13-W-231102 Sample Time:12:00 Sample Depth (ft-bmp) (e.g. pump intake):13.5 Analytes and Methods:See Chain-of-Custody.Depth to Water at Time of Sampling 6.93 Well Casing Volume Conversion Well diameter (in.) = gallons per foot 1 = 0.04 1.5 = 0.09 2.5 = 0.26 3.5 = 0.50 6 = 1.47 1.25 = 0.06 2 = 0.16 3 = 0.37 4 = 0.65 0.73 21.40 -233.2 Clear Comments:None 100 6.93 7.57 6.41 2.5 0.75 21.60 -232.1 Clear 100 6.93 7.60 6.50 2.6 0.76 21.50 -231.6 Clear 100 6.93 7.59 6.57 3.7 0.73 21.40 -234.8 Clear 100 6.93 7.63 6.61 8.0 0.71 21.50 -233.2 Clear 100 6.93 7.60 6.67 7.1 0.75 21.60 -245 Clear 100 6.93 7.62 6.77 13.6 0.67 21.40 -236.2 Clear 100 6.93 7.62 7.11 12.7 0.68 21.00 -253.7 Clear 100 6.93 7.65 7.76 12.9 0.90 21.20 -249 Clear 100 6.93 7.74 8.54 20.2 0.74 21.00 -257 Clear 100 6.93 7.74 9.57 31.0 0.71 21.00 -256.7 Clear 100 6.93 7.76 10.3 57.7 1.05 20.90 -243.8 Clear 100 6.93 7.70 10.4 70.7 0.81 20.90 -252.4 Clear 100 6.93 7.76 10.4 41.0 Rate (ml/min) Depth to Water (ft) pH (standard units) Conductivity (mS/cm) Turbidity (NTU) Dissolved Oxygen (mg/L) Temperature (°C) Redox (mV) Color MW-13-W- 231102 Purge Equipment Peristaltic Purge Start 10:52 Gallons Purged 1.93 Duplicate ID --Sample Equipment Peristaltic Purge End 11:57 Total Purge Time(h:m) 1:5 Sample Time 12:00 Well Volumes Purged 0.86 Sample ID 13.83 Gallons in Well 2.25 Water Quality Meter Make/Model YSI Pro Quatro Purge Method Low-Flow Collection Type Grab Static Water Level (ft-bmp)6.91 Total Depth (ft-bmp)20.74 Water Column(ft) Sampled by Bridger Cherry Measuring Point Description Top of Casing Screen Depth Interval (ft-bmp)5 to 20 Casing Diameter (in.) 2 Well Casing Material PVC Site Location Salt Lake City, Utah Site ID 377352 Weather(°F)Clear Chevron Groundwater Sampling Form Project Number 30064298 Well ID MW-13 Date 11/2/2023 ft-bmp = feet below measuring point mS/cm = milliSiemens per centimeter mV = millivolts in. = inches NTU = Nephe Time 12:55 13:00 13:05 13:10 13:15 13:20 13:25 13:30 13:35 13:40 13:45 13:50 13:55 14:00 13.5 Analytes and Methods:See Chain-of-Custody.Depth to Water at Time of Sampling 8.16 Sample ID:MW-14-W-231102 Sample Time:14:05 Sample Depth (ft-bmp) (e.g. pump intake): Well diameter (in.) = gallons per foot 1 = 0.04 1.5 = 0.09 2.5 = 0.26 3.5 = 0.50 6 = 1.47 1.25 = 0.06 2 = 0.16 3 = 0.37 4 = 0.65 Sample Information Comments:None Well Casing Volume Conversion 0.30 21.50 -223.2 Clear 100 8.16 7.62 7.56 3.4 0.25 21.50 -224.8 Clear 100 8.21 7.63 7.53 4.2 0.35 21.50 -224.5 Clear 100 8.16 7.63 7.56 4.2 0.34 21.50 -223.6 Clear 100 8.16 7.63 7.48 5.0 0.42 21.50 -220.9 Clear 100 8.13 7.68 7.73 7.2 0.43 21.50 -222 Clear 100 8.11 7.64 7.71 8.8 0.61 21.30 -219.9 Clear 100 8.09 7.68 7.82 10.1 0.46 21.30 -220.1 Clear 100 8.06 7.65 7.98 11.7 1.18 21.10 -217.9 Clear 100 8.01 7.65 8.01 13.5 0.85 21.10 -219.2 Clear 100 7.99 7.66 8.00 16.9 0.65 21.30 -222.6 Clear 100 7.97 7.67 8.33 21.2 0.91 21.20 -218 Clear 100 7.92 7.68 9.80 35.5 0.48 20.90 -211 Clear 100 7.86 7.71 12.7 42.5 0.52 21.20 -220.5 Clear 100 7.81 7.49 12.8 26.3 Rate (ml/min) Depth to Water (ft) pH (standard units) Conductivity (mS/cm) Turbidity (NTU) Dissolved Oxygen (mg/L) Temperature (°C) Redox (mV) Color MW-14-W- 231102 Purge Equipment Peristaltic Purge Start 12:50 Gallons Purged 1.85 Duplicate ID --Sample Equipment Peristaltic Purge End 14:00 Total Purge Time(h:m) 1:10 Sample Time 14:05 Well Volumes Purged 0.91 Sample ID 12.52 Gallons in Well 2.03 Water Quality Meter Make/Model YSI Pro Quatro Purge Method Low-Flow Collection Type Grab Static Water Level (ft-bmp)7.63 Total Depth (ft-bmp)20.15 Water Column(ft) Sampled by Bridger Cherry Measuring Point Description Top of Casing Screen Depth Interval (ft-bmp)5 to 20 Casing Diameter (in.) 2 Well Casing Material Site Location Salt Lake City, Utah Site ID 377352 Weather(°F)Clear Chevron Groundwater Sampling Form Project Number 30064298 Well ID MW-14 Date 11/2/2023 ft-bmp = feet below measuring point mS/cm = milliSiemens per centimeter mV = millivolts in. = inches NTU = Nephe Appendix E Survey Data POINT ID NORTHING EASTING ELEVATION DESCRIPTION 1026000 7436131.36 1516803.338 4234.069 CL MON WELL MW10 1026001 7436131.422 1516803.25 4233.644 N SIDE PIPE MW10 1026002 7436131.132 1516872.662 4234.084 CL MW01 1026003 7436131.144 1516872.651 4233.952 N SIDE PIPE MW01 1026004 7436131.313 1516965.254 4234.315 CL MW2 1026005 7436131.464 1516965.282 4234.009 N SIDE MW2 1026006 7436129.314 1517069.721 4234.313 CL MW03 1026007 7436129.402 1517069.686 4233.86 N SIDE PIPE MW03 1026008 7436197.267 1517119.345 4232.077 CL MW06 1026009 7436197.251 1517119.353 4231.812 N SIDE MW06 1026010 7436239.442 1516809.303 4233.905 CL MW13 1026011 7436239.508 1516809.256 4233.711 N SIDE MW13 1026012 7436239.591 1516890.253 4234.71 CL MW14 1026013 7436239.579 1516890.336 4234.208 N SIDE PIPE MW14 1026014 7436204.963 1516898.746 4234.564 CL MW11 1026015 7436205.023 1516898.779 4233.865 N SIDE PIPE MW11 1026016 7436201.559 1516830.811 4234.08 CL MW12 1026017 7436201.667 1516830.819 4233.517 N SIDE PIPE MW12 1026018 7436046.574 1516843.391 4234.79 CL MW08 1026019 7436046.795 1516843.385 4234.295 N SIDE MW08 1026020 7436050.434 1517005.383 4234.944 CL MW07 1026021 7436050.512 1517005.454 4234.315 N SIDE MW07 1026022 7436013.896 1517087.709 4234.663 CL MW05 1026023 7436014.047 1517087.743 4234.191 N SIDE MW05 1026024 7436080.007 1516840.822 4234.231 CL MW09 1026025 7436080.035 1516840.781 4233.913 N SIDE MW09 1026026 7436079.354 1517047.022 4234.202 CL MW04 1026027 7436079.393 1517046.955 4233.781 N SIDE MW04 1026028 7436137.86 1517074.551 4234.24 FH 1026029 7436145.664 1517094.66 4234.254 BUILD COR 1026030 7436145.066 1516999.122 4235.062 BUILD COR Units: U.S. Survey Feet Horizontal Data: Utah Coordinate System, Central Zone 4302, NAD83 Datum Vertical Data: NAVD 88 Survey Conducted by EDM Partners of Salt Lake City, UT Appendix F Waste Manifests Appendix G Laboratory Analytical Reports ANALYTICAL REPORT November 02, 2023 Arcadis - Chevron - UT Sample Delivery Group:L1669100 Samples Received:10/21/2023 Project Number:30064298 07.21 Description:377352 Site:1917 WEST 1700 SOUTH, SLC Report To:Carissa Mason 10 Exchange Place Suite 112 Salt Lake City, UT 84111 Entire Report Reviewed By: November 02, 2023 [Preliminary Report] Brian Ford 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: Arcadis - Chevron - UT 30064298 07.21 L1669100 11/02/23 08:52 1 of 27 November 02, 2023 Brian Ford Project Manager ACCOUNT:PROJECT:SDG:DATE/TIME:PAGE: Arcadis - Chevron - UT 30064298 07.21 L1669100 11/02/23 09:10 1 of 27 TABLE OF CONTENTS Cp: Cover Page 1 Tc: Table of Contents 2 Ss: Sample Summary 3 Cn: Case Narrative 5 Sr: Sample Results 6 MW-12-S-2-3-231017 L1669100-01 6 MW-12-S-5-6-231017 L1669100-02 7 MW-12-S-20-21-231017 L1669100-03 8 MW-11-S-5-6.5-231018 L1669100-04 9 MW-11-S-15.5-16.5-231018 L1669100-05 10 MW-11-S-20-21.5-231018 L1669100-06 11 MW-14-S-5.5-6.5-231018 L1669100-07 12 MW-14-S-20-21.5-231018 L1669100-08 14 Qc: Quality Control Summary 15 Total Solids by Method 2540 G-2011 15 Wet Chemistry by Method 9071B 17 Wet Chemistry by Method USDA LOI 18 Volatile Organic Compounds (GC) by Method 8015D/GRO 19 Volatile Organic Compounds (GC/MS) by Method 8260B 22 Semi-Volatile Organic Compounds (GC) by Method 8015D 23 Semi-Volatile Organic Compounds (GC) by Method 8015-SGT 24 Gl: Glossary of Terms 25 Al: Accreditations & Locations 26 Sc: Sample Chain of Custody 27 1 Cp 2 Tc 3 Ss 4 Cn 5 Sr 6 Qc 7 Gl 8 Al 9 Sc ACCOUNT:PROJECT:SDG:DATE/TIME:PAGE: Arcadis - Chevron - UT 30064298 07.21 L1669100 11/02/23 08:52 2 of 27 ACCOUNT:PROJECT:SDG:DATE/TIME:PAGE: Arcadis - Chevron - UT 30064298 07.21 L1669100 11/02/23 09:10 2 of 27 SAMPLE SUMMARY Collected by Collected date/time Received date/time MW-12-S-2-3-231017 L1669100-01 Solid LM/BC 10/17/23 13:05 10/21/23 08:00 Method Batch Dilution Preparation Analysis Analyst Location date/time date/time Total Solids by Method 2540 G-2011 WG2158330 1 10/27/23 11:45 10/27/23 12:04 KDW Mt. Juliet, TN Wet Chemistry by Method 9071B WG2156855 1 10/24/23 16:02 10/25/23 00:21 WAW Mt. Juliet, TN Wet Chemistry by Method USDA LOI WG2161083 1 10/31/23 08:30 10/31/23 09:20 JAC Mt. Juliet, TN Volatile Organic Compounds (GC) by Method 8015D/GRO WG2159425 25 10/17/23 13:05 10/28/23 13:48 DWR Mt. Juliet, TN Volatile Organic Compounds (GC/MS) by Method 8260B WG2158141 1 10/17/23 13:05 10/26/23 00:04 JHH Mt. Juliet, TN Semi-Volatile Organic Compounds (GC) by Method 8015D WG2160102 1 10/30/23 20:50 10/31/23 13:17 KAP Mt. Juliet, TN Semi-Volatile Organic Compounds (GC) by Method 8015-SGT WG2160105 1 10/30/23 20:50 10/31/23 21:26 JAS Mt. Juliet, TN Collected by Collected date/time Received date/time MW-12-S-5-6-231017 L1669100-02 Solid LM/BC 10/17/23 13:40 10/21/23 08:00 Method Batch Dilution Preparation Analysis Analyst Location date/time date/time Total Solids by Method 2540 G-2011 WG2158330 1 10/27/23 11:45 10/27/23 12:04 KDW Mt. Juliet, TN Wet Chemistry by Method 9071B WG2156855 1 10/24/23 16:02 10/25/23 00:21 WAW Mt. Juliet, TN Wet Chemistry by Method USDA LOI WG2161083 1 10/31/23 08:30 10/31/23 09:20 JAC Mt. Juliet, TN Volatile Organic Compounds (GC) by Method 8015D/GRO WG2159686 25 10/17/23 13:40 10/29/23 08:56 JHH Mt. Juliet, TN Volatile Organic Compounds (GC/MS) by Method 8260B WG2158141 1 10/17/23 13:40 10/26/23 00:24 JHH Mt. Juliet, TN Semi-Volatile Organic Compounds (GC) by Method 8015D WG2160102 1 10/30/23 20:50 10/31/23 12:41 KAP Mt. Juliet, TN Semi-Volatile Organic Compounds (GC) by Method 8015-SGT WG2160105 1 10/30/23 20:50 10/31/23 21:13 JAS Mt. Juliet, TN Collected by Collected date/time Received date/time MW-12-S-20-21-231017 L1669100-03 Solid LM/BC 10/17/23 15:15 10/21/23 08:00 Method Batch Dilution Preparation Analysis Analyst Location date/time date/time Total Solids by Method 2540 G-2011 WG2158330 1 10/27/23 11:45 10/27/23 12:04 KDW Mt. Juliet, TN Wet Chemistry by Method 9071B WG2156855 1 10/24/23 16:02 10/25/23 00:21 WAW Mt. Juliet, TN Wet Chemistry by Method USDA LOI WG2161083 1 10/31/23 08:30 10/31/23 09:20 JAC Mt. Juliet, TN Volatile Organic Compounds (GC) by Method 8015D/GRO WG2159686 25 10/17/23 15:15 10/29/23 09:15 JHH Mt. Juliet, TN Volatile Organic Compounds (GC/MS) by Method 8260B WG2158141 1 10/17/23 15:15 10/26/23 00:43 JHH Mt. Juliet, TN Semi-Volatile Organic Compounds (GC) by Method 8015D WG2160102 1 10/30/23 20:50 10/31/23 12:28 KAP Mt. Juliet, TN Semi-Volatile Organic Compounds (GC) by Method 8015-SGT WG2160105 1 10/30/23 20:50 10/31/23 21:50 JAS Mt. Juliet, TN Collected by Collected date/time Received date/time MW-11-S-5-6.5-231018 L1669100-04 Solid LM/BC 10/18/23 09:00 10/21/23 08:00 Method Batch Dilution Preparation Analysis Analyst Location date/time date/time Total Solids by Method 2540 G-2011 WG2158330 1 10/27/23 11:45 10/27/23 12:04 KDW Mt. Juliet, TN Wet Chemistry by Method 9071B WG2156855 1 10/24/23 16:02 10/25/23 00:21 WAW Mt. Juliet, TN Wet Chemistry by Method USDA LOI WG2161083 1 10/31/23 08:30 10/31/23 09:20 JAC Mt. Juliet, TN Volatile Organic Compounds (GC) by Method 8015D/GRO WG2159686 25 10/18/23 09:00 10/29/23 09:35 JHH Mt. Juliet, TN Volatile Organic Compounds (GC/MS) by Method 8260B WG2158141 1 10/18/23 09:00 10/26/23 01:02 JHH Mt. Juliet, TN Semi-Volatile Organic Compounds (GC) by Method 8015D WG2160102 25 10/30/23 20:50 10/31/23 13:54 KAP Mt. Juliet, TN Semi-Volatile Organic Compounds (GC) by Method 8015-SGT WG2160105 25 10/30/23 20:50 10/31/23 22:56 JAS Mt. Juliet, TN Collected by Collected date/time Received date/time MW-11-S-15.5-16.5-231018 L1669100-05 Solid LM/BC 10/18/23 09:35 10/21/23 08:00 Method Batch Dilution Preparation Analysis Analyst Location date/time date/time Total Solids by Method 2540 G-2011 WG2158330 1 10/27/23 11:45 10/27/23 12:04 KDW Mt. Juliet, TN Wet Chemistry by Method 9071B WG2156855 1 10/24/23 16:02 10/25/23 00:21 WAW Mt. Juliet, TN Wet Chemistry by Method USDA LOI WG2161083 1 10/31/23 08:30 10/31/23 09:20 JAC Mt. Juliet, TN Volatile Organic Compounds (GC) by Method 8015D/GRO WG2159686 25 10/18/23 09:35 10/29/23 09:54 JHH 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: Arcadis - Chevron - UT 30064298 07.21 L1669100 11/02/23 08:52 3 of 27 ACCOUNT:PROJECT:SDG:DATE/TIME:PAGE: Arcadis - Chevron - UT 30064298 07.21 L1669100 11/02/23 09:10 3 of 27 SAMPLE SUMMARY Collected by Collected date/time Received date/time MW-11-S-15.5-16.5-231018 L1669100-05 Solid LM/BC 10/18/23 09:35 10/21/23 08:00 Method Batch Dilution Preparation Analysis Analyst Location date/time date/time Volatile Organic Compounds (GC/MS) by Method 8260B WG2158141 1 10/18/23 09:35 10/26/23 01:20 JHH Mt. Juliet, TN Semi-Volatile Organic Compounds (GC) by Method 8015D WG2160102 1 10/30/23 20:50 10/31/23 12:16 KAP Mt. Juliet, TN Semi-Volatile Organic Compounds (GC) by Method 8015-SGT WG2160105 1 10/30/23 20:50 10/31/23 12:16 JAS Mt. Juliet, TN Collected by Collected date/time Received date/time MW-11-S-20-21.5-231018 L1669100-06 Solid LM/BC 10/18/23 09:50 10/21/23 08:00 Method Batch Dilution Preparation Analysis Analyst Location date/time date/time Total Solids by Method 2540 G-2011 WG2158330 1 10/27/23 11:45 10/27/23 12:04 KDW Mt. Juliet, TN Wet Chemistry by Method 9071B WG2156855 1 10/24/23 16:02 10/25/23 00:21 WAW Mt. Juliet, TN Wet Chemistry by Method USDA LOI WG2161083 1 10/31/23 08:30 10/31/23 09:20 JAC Mt. Juliet, TN Volatile Organic Compounds (GC) by Method 8015D/GRO WG2159686 25 10/18/23 09:50 10/29/23 10:13 JHH Mt. Juliet, TN Volatile Organic Compounds (GC/MS) by Method 8260B WG2158141 1 10/18/23 09:50 10/26/23 01:39 JHH Mt. Juliet, TN Semi-Volatile Organic Compounds (GC) by Method 8015D WG2160102 1 10/30/23 20:50 10/31/23 12:53 KAP Mt. Juliet, TN Semi-Volatile Organic Compounds (GC) by Method 8015-SGT WG2160105 1 10/30/23 20:50 10/31/23 21:50 JAS Mt. Juliet, TN Collected by Collected date/time Received date/time MW-14-S-5.5-6.5-231018 L1669100-07 Solid LM/BC 10/18/23 14:15 10/21/23 08:00 Method Batch Dilution Preparation Analysis Analyst Location date/time date/time Total Solids by Method 2540 G-2011 WG2158332 1 10/27/23 11:19 10/27/23 11:39 KDW Mt. Juliet, TN Wet Chemistry by Method 9071B WG2156855 1 10/24/23 16:02 10/25/23 00:21 WAW Mt. Juliet, TN Wet Chemistry by Method USDA LOI WG2161083 1 10/31/23 08:30 10/31/23 09:20 JAC Mt. Juliet, TN Volatile Organic Compounds (GC) by Method 8015D/GRO WG2159686 25 10/18/23 14:15 10/29/23 10:33 JHH Mt. Juliet, TN Volatile Organic Compounds (GC/MS) by Method 8260B WG2158141 1 10/18/23 14:15 10/26/23 01:58 JHH Mt. Juliet, TN Semi-Volatile Organic Compounds (GC) by Method 8015D WG2160102 10 10/30/23 20:50 10/31/23 13:30 KAP Mt. Juliet, TN Semi-Volatile Organic Compounds (GC) by Method 8015D WG2160102 50 10/30/23 20:50 10/31/23 14:55 KAP Mt. Juliet, TN Semi-Volatile Organic Compounds (GC) by Method 8015-SGT WG2160105 50 10/30/23 20:50 10/31/23 23:08 JAS Mt. Juliet, TN Collected by Collected date/time Received date/time MW-14-S-20-21.5-231018 L1669100-08 Solid LM/BC 10/18/23 15:02 10/21/23 08:00 Method Batch Dilution Preparation Analysis Analyst Location date/time date/time Total Solids by Method 2540 G-2011 WG2158332 1 10/27/23 11:19 10/27/23 11:39 KDW Mt. Juliet, TN Wet Chemistry by Method 9071B WG2156855 1 10/24/23 16:02 10/25/23 00:21 WAW Mt. Juliet, TN Wet Chemistry by Method USDA LOI WG2161083 1 10/31/23 08:30 10/31/23 09:20 JAC Mt. Juliet, TN Volatile Organic Compounds (GC) by Method 8015D/GRO WG2160620 25 10/18/23 15:02 10/30/23 21:08 DWR Mt. Juliet, TN Volatile Organic Compounds (GC/MS) by Method 8260B WG2158141 1 10/18/23 15:02 10/26/23 02:16 JHH Mt. Juliet, TN Semi-Volatile Organic Compounds (GC) by Method 8015D WG2160102 1 10/30/23 20:50 10/31/23 12:04 KAP Mt. Juliet, TN Semi-Volatile Organic Compounds (GC) by Method 8015-SGT WG2160105 1 10/30/23 20:50 10/31/23 21:01 JAS 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: Arcadis - Chevron - UT 30064298 07.21 L1669100 11/02/23 08:52 4 of 27 ACCOUNT:PROJECT:SDG:DATE/TIME:PAGE: Arcadis - Chevron - UT 30064298 07.21 L1669100 11/02/23 09:10 4 of 27 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] Brian Ford 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: Arcadis - Chevron - UT 30064298 07.21 L1669100 11/02/23 08:52 5 of 27 Brian Ford Project Manager ACCOUNT:PROJECT:SDG:DATE/TIME:PAGE: Arcadis - Chevron - UT 30064298 07.21 L1669100 11/02/23 09:10 5 of 27 SAMPLE RESULTS - 01 L1669100 MW-12-S-2-3-231017 Collected date/time: 10/17/23 13:05 Total Solids by Method 2540 G-2011 Result Qualifier Dilution Analysis Batch Analyte %date / time Total Solids 79.0 1 10/27/2023 12:04 WG2158330 Wet Chemistry by Method 9071B Result (dry)Qualifier MDL (dry)RDL (dry)Dilution Analysis Batch Analyte mg/kg mg/kg mg/kg date / time Oil & Grease (Hexane Extr)U 41.8 127 1 10/25/2023 00:21 WG2156855 Wet Chemistry by Method USDA LOI Result Qualifier MDL RDL Dilution Analysis Batch Analyte mg/kg mg/kg mg/kg date / time TOC (Total Organic Carbon)5890 3.33 10.0 1 10/31/2023 09:20 WG2161083 Volatile Organic Compounds (GC) by Method 8015D/GRO Result (dry)Qualifier MDL (dry)RDL (dry)Dilution Analysis Batch Analyte mg/kg mg/kg mg/kg date / time TPH (GC/FID) Low Fraction 2.50 B J 0.866 3.98 25 10/28/2023 13:48 WG2159425 (S) a,a,a-Trifluorotoluene(FID)91.2 77.0-120 10/28/2023 13:48 WG2159425 Volatile Organic Compounds (GC/MS) by Method 8260B Result (dry)Qualifier MDL (dry)RDL (dry)Dilution Analysis Batch Analyte mg/kg mg/kg mg/kg date / time Benzene 0.000936 J 0.000744 0.00159 1 10/26/2023 00:04 WG2158141 Toluene 0.00567 J 0.00207 0.00797 1 10/26/2023 00:04 WG2158141 Ethylbenzene U 0.00117 0.00398 1 10/26/2023 00:04 WG2158141 Total Xylenes 0.00341 J 0.00140 0.0104 1 10/26/2023 00:04 WG2158141 Methyl tert-butyl ether U 0.000558 0.00159 1 10/26/2023 00:04 WG2158141 1,2-Dibromoethane U 0.00103 0.00398 1 10/26/2023 00:04 WG2158141 1,2-Dichloroethane U 0.00103 0.00398 1 10/26/2023 00:04 WG2158141 Naphthalene U 0.00778 0.0199 1 10/26/2023 00:04 WG2158141 (S) Toluene-d8 104 75.0-131 10/26/2023 00:04 WG2158141 (S) 4-Bromofluorobenzene 97.8 67.0-138 10/26/2023 00:04 WG2158141 (S) 1,2-Dichloroethane-d4 97.4 70.0-130 10/26/2023 00:04 WG2158141 Semi-Volatile Organic Compounds (GC) by Method 8015D Result (dry)Qualifier MDL (dry)RDL (dry)Dilution Analysis Batch Analyte mg/kg mg/kg mg/kg date / time C10-C28 Diesel Range 2.32 J 2.04 5.07 1 10/31/2023 13:17 WG2160102 C28-C40 Oil Range 7.52 0.347 5.07 1 10/31/2023 13:17 WG2160102 (S) o-Terphenyl 61.4 18.0-148 10/31/2023 13:17 WG2160102 Semi-Volatile Organic Compounds (GC) by Method 8015-SGT Result (dry)Qualifier MDL (dry)RDL (dry)Dilution Analysis Batch Analyte mg/kg mg/kg mg/kg date / time C10-C28 Diesel Range U 2.04 5.07 1 10/31/2023 21:26 WG2160105 C28-C40 Oil Range 4.13 J 0.347 5.07 1 10/31/2023 21:26 WG2160105 (S) o-Terphenyl 53.0 18.0-148 10/31/2023 21:26 WG2160105 1 Cp 2 Tc 3 Ss 4 Cn 5 Sr 6 Qc 7 Gl 8 Al 9 Sc ACCOUNT:PROJECT:SDG:DATE/TIME:PAGE: Arcadis - Chevron - UT 30064298 07.21 L1669100 11/02/23 08:52 6 of 27 ACCOUNT:PROJECT:SDG:DATE/TIME:PAGE: Arcadis - Chevron - UT 30064298 07.21 L1669100 11/02/23 09:10 6 of 27 SAMPLE RESULTS - 02 L1669100 MW-12-S-5-6-231017 Collected date/time: 10/17/23 13:40 Total Solids by Method 2540 G-2011 Result Qualifier Dilution Analysis Batch Analyte %date / time Total Solids 79.8 1 10/27/2023 12:04 WG2158330 Wet Chemistry by Method 9071B Result (dry)Qualifier MDL (dry)RDL (dry)Dilution Analysis Batch Analyte mg/kg mg/kg mg/kg date / time Oil & Grease (Hexane Extr)134 41.4 125 1 10/25/2023 00:21 WG2156855 Wet Chemistry by Method USDA LOI Result Qualifier MDL RDL Dilution Analysis Batch Analyte mg/kg mg/kg mg/kg date / time TOC (Total Organic Carbon)4700 3.33 10.0 1 10/31/2023 09:20 WG2161083 Volatile Organic Compounds (GC) by Method 8015D/GRO Result (dry)Qualifier MDL (dry)RDL (dry)Dilution Analysis Batch Analyte mg/kg mg/kg mg/kg date / time TPH (GC/FID) Low Fraction 47.0 0.860 3.96 25 10/29/2023 08:56 WG2159686 (S) a,a,a-Trifluorotoluene(FID)98.8 77.0-120 10/29/2023 08:56 WG2159686 Volatile Organic Compounds (GC/MS) by Method 8260B Result (dry)Qualifier MDL (dry)RDL (dry)Dilution Analysis Batch Analyte mg/kg mg/kg mg/kg date / time Benzene U 0.000740 0.00158 1 10/26/2023 00:24 WG2158141 Toluene U 0.00206 0.00792 1 10/26/2023 00:24 WG2158141 Ethylbenzene 0.00228 J 0.00117 0.00396 1 10/26/2023 00:24 WG2158141 Total Xylenes 0.0124 0.00139 0.0103 1 10/26/2023 00:24 WG2158141 Methyl tert-butyl ether U 0.000554 0.00158 1 10/26/2023 00:24 WG2158141 1,2-Dibromoethane U 0.00103 0.00396 1 10/26/2023 00:24 WG2158141 1,2-Dichloroethane U 0.00103 0.00396 1 10/26/2023 00:24 WG2158141 Naphthalene 0.342 0.00773 0.0198 1 10/26/2023 00:24 WG2158141 (S) Toluene-d8 100 75.0-131 10/26/2023 00:24 WG2158141 (S) 4-Bromofluorobenzene 103 67.0-138 10/26/2023 00:24 WG2158141 (S) 1,2-Dichloroethane-d4 97.6 70.0-130 10/26/2023 00:24 WG2158141 Semi-Volatile Organic Compounds (GC) by Method 8015D Result (dry)Qualifier MDL (dry)RDL (dry)Dilution Analysis Batch Analyte mg/kg mg/kg mg/kg date / time C10-C28 Diesel Range 238 2.02 5.01 1 10/31/2023 12:41 WG2160102 C28-C40 Oil Range 5.84 0.343 5.01 1 10/31/2023 12:41 WG2160102 (S) o-Terphenyl 93.4 18.0-148 10/31/2023 12:41 WG2160102 Semi-Volatile Organic Compounds (GC) by Method 8015-SGT Result (dry)Qualifier MDL (dry)RDL (dry)Dilution Analysis Batch Analyte mg/kg mg/kg mg/kg date / time C10-C28 Diesel Range 183 2.02 5.01 1 10/31/2023 21:13 WG2160105 C28-C40 Oil Range 2.93 J 0.343 5.01 1 10/31/2023 21:13 WG2160105 (S) o-Terphenyl 86.3 18.0-148 10/31/2023 21:13 WG2160105 1 Cp 2 Tc 3 Ss 4 Cn 5 Sr 6 Qc 7 Gl 8 Al 9 Sc ACCOUNT:PROJECT:SDG:DATE/TIME:PAGE: Arcadis - Chevron - UT 30064298 07.21 L1669100 11/02/23 08:52 7 of 27 ACCOUNT:PROJECT:SDG:DATE/TIME:PAGE: Arcadis - Chevron - UT 30064298 07.21 L1669100 11/02/23 09:10 7 of 27 SAMPLE RESULTS - 03 L1669100 MW-12-S-20-21-231017 Collected date/time: 10/17/23 15:15 Total Solids by Method 2540 G-2011 Result Qualifier Dilution Analysis Batch Analyte %date / time Total Solids 78.9 1 10/27/2023 12:04 WG2158330 Wet Chemistry by Method 9071B Result (dry)Qualifier MDL (dry)RDL (dry)Dilution Analysis Batch Analyte mg/kg mg/kg mg/kg date / time Oil & Grease (Hexane Extr)62.2 J 41.8 127 1 10/25/2023 00:21 WG2156855 Wet Chemistry by Method USDA LOI Result Qualifier MDL RDL Dilution Analysis Batch Analyte mg/kg mg/kg mg/kg date / time TOC (Total Organic Carbon)3020 3.33 10.0 1 10/31/2023 09:20 WG2161083 Volatile Organic Compounds (GC) by Method 8015D/GRO Result (dry)Qualifier MDL (dry)RDL (dry)Dilution Analysis Batch Analyte mg/kg mg/kg mg/kg date / time TPH (GC/FID) Low Fraction 2.30 J 0.857 3.94 25 10/29/2023 09:15 WG2159686 (S) a,a,a-Trifluorotoluene(FID)98.8 77.0-120 10/29/2023 09:15 WG2159686 Volatile Organic Compounds (GC/MS) by Method 8260B Result (dry)Qualifier MDL (dry)RDL (dry)Dilution Analysis Batch Analyte mg/kg mg/kg mg/kg date / time Benzene U 0.000737 0.00158 1 10/26/2023 00:43 WG2158141 Toluene 0.00330 J 0.00205 0.00789 1 10/26/2023 00:43 WG2158141 Ethylbenzene 0.0130 0.00116 0.00394 1 10/26/2023 00:43 WG2158141 Total Xylenes 0.0103 0.00139 0.0103 1 10/26/2023 00:43 WG2158141 Methyl tert-butyl ether U 0.000552 0.00158 1 10/26/2023 00:43 WG2158141 1,2-Dibromoethane U 0.00102 0.00394 1 10/26/2023 00:43 WG2158141 1,2-Dichloroethane U 0.00102 0.00394 1 10/26/2023 00:43 WG2158141 Naphthalene 0.0152 J 0.00770 0.0197 1 10/26/2023 00:43 WG2158141 (S) Toluene-d8 108 75.0-131 10/26/2023 00:43 WG2158141 (S) 4-Bromofluorobenzene 105 67.0-138 10/26/2023 00:43 WG2158141 (S) 1,2-Dichloroethane-d4 92.8 70.0-130 10/26/2023 00:43 WG2158141 Semi-Volatile Organic Compounds (GC) by Method 8015D Result (dry)Qualifier MDL (dry)RDL (dry)Dilution Analysis Batch Analyte mg/kg mg/kg mg/kg date / time C10-C28 Diesel Range 15.3 2.04 5.07 1 10/31/2023 12:28 WG2160102 C28-C40 Oil Range 8.76 0.347 5.07 1 10/31/2023 12:28 WG2160102 (S) o-Terphenyl 57.4 18.0-148 10/31/2023 12:28 WG2160102 Semi-Volatile Organic Compounds (GC) by Method 8015-SGT Result (dry)Qualifier MDL (dry)RDL (dry)Dilution Analysis Batch Analyte mg/kg mg/kg mg/kg date / time C10-C28 Diesel Range 14.1 2.04 5.07 1 10/31/2023 21:50 WG2160105 C28-C40 Oil Range 3.52 J 0.347 5.07 1 10/31/2023 21:50 WG2160105 (S) o-Terphenyl 45.4 18.0-148 10/31/2023 21:50 WG2160105 1 Cp 2 Tc 3 Ss 4 Cn 5 Sr 6 Qc 7 Gl 8 Al 9 Sc ACCOUNT:PROJECT:SDG:DATE/TIME:PAGE: Arcadis - Chevron - UT 30064298 07.21 L1669100 11/02/23 08:52 8 of 27 ACCOUNT:PROJECT:SDG:DATE/TIME:PAGE: Arcadis - Chevron - UT 30064298 07.21 L1669100 11/02/23 09:10 8 of 27 SAMPLE RESULTS - 04 L1669100 MW-11-S-5-6.5-231018 Collected date/time: 10/18/23 09:00 Total Solids by Method 2540 G-2011 Result Qualifier Dilution Analysis Batch Analyte %date / time Total Solids 84.5 1 10/27/2023 12:04 WG2158330 Wet Chemistry by Method 9071B Result (dry)Qualifier MDL (dry)RDL (dry)Dilution Analysis Batch Analyte mg/kg mg/kg mg/kg date / time Oil & Grease (Hexane Extr)1420 39.1 118 1 10/25/2023 00:21 WG2156855 Wet Chemistry by Method USDA LOI Result Qualifier MDL RDL Dilution Analysis Batch Analyte mg/kg mg/kg mg/kg date / time TOC (Total Organic Carbon)14700 3.33 10.0 1 10/31/2023 09:20 WG2161083 Volatile Organic Compounds (GC) by Method 8015D/GRO Result (dry)Qualifier MDL (dry)RDL (dry)Dilution Analysis Batch Analyte mg/kg mg/kg mg/kg date / time TPH (GC/FID) Low Fraction 29.8 0.774 3.56 25 10/29/2023 09:35 WG2159686 (S) a,a,a-Trifluorotoluene(FID)99.9 77.0-120 10/29/2023 09:35 WG2159686 Volatile Organic Compounds (GC/MS) by Method 8260B Result (dry)Qualifier MDL (dry)RDL (dry)Dilution Analysis Batch Analyte mg/kg mg/kg mg/kg date / time Benzene 0.00664 0.000665 0.00142 1 10/26/2023 01:02 WG2158141 Toluene 0.0212 0.00185 0.00712 1 10/26/2023 01:02 WG2158141 Ethylbenzene 0.0403 0.00105 0.00356 1 10/26/2023 01:02 WG2158141 Total Xylenes 0.109 0.00125 0.00926 1 10/26/2023 01:02 WG2158141 Methyl tert-butyl ether U 0.000499 0.00142 1 10/26/2023 01:02 WG2158141 1,2-Dibromoethane U 0.000923 0.00356 1 10/26/2023 01:02 WG2158141 1,2-Dichloroethane U 0.000925 0.00356 1 10/26/2023 01:02 WG2158141 Naphthalene 0.259 0.00695 0.0178 1 10/26/2023 01:02 WG2158141 (S) Toluene-d8 109 75.0-131 10/26/2023 01:02 WG2158141 (S) 4-Bromofluorobenzene 103 67.0-138 10/26/2023 01:02 WG2158141 (S) 1,2-Dichloroethane-d4 88.8 70.0-130 10/26/2023 01:02 WG2158141 Semi-Volatile Organic Compounds (GC) by Method 8015D Result (dry)Qualifier MDL (dry)RDL (dry)Dilution Analysis Batch Analyte mg/kg mg/kg mg/kg date / time C10-C28 Diesel Range 3300 47.7 118 25 10/31/2023 13:54 WG2160102 C28-C40 Oil Range 304 8.11 118 25 10/31/2023 13:54 WG2160102 (S) o-Terphenyl 488 J7 18.0-148 10/31/2023 13:54 WG2160102 Sample Narrative: L1669100-04 WG2160102: Dilution and surrogate failure due to matrix interference. Semi-Volatile Organic Compounds (GC) by Method 8015-SGT Result (dry)Qualifier MDL (dry)RDL (dry)Dilution Analysis Batch Analyte mg/kg mg/kg mg/kg date / time C10-C28 Diesel Range 2120 47.7 118 25 10/31/2023 22:56 WG2160105 C28-C40 Oil Range 143 8.11 118 25 10/31/2023 22:56 WG2160105 (S) o-Terphenyl 0.000 J7 18.0-148 10/31/2023 22:56 WG2160105 1 Cp 2 Tc 3 Ss 4 Cn 5 Sr 6 Qc 7 Gl 8 Al 9 Sc ACCOUNT:PROJECT:SDG:DATE/TIME:PAGE: Arcadis - Chevron - UT 30064298 07.21 L1669100 11/02/23 08:52 9 of 27 ACCOUNT:PROJECT:SDG:DATE/TIME:PAGE: Arcadis - Chevron - UT 30064298 07.21 L1669100 11/02/23 09:10 9 of 27 SAMPLE RESULTS - 05 L1669100 MW-11-S-15.5-16.5-231018 Collected date/time: 10/18/23 09:35 Total Solids by Method 2540 G-2011 Result Qualifier Dilution Analysis Batch Analyte %date / time Total Solids 70.6 1 10/27/2023 12:04 WG2158330 Wet Chemistry by Method 9071B Result (dry)Qualifier MDL (dry)RDL (dry)Dilution Analysis Batch Analyte mg/kg mg/kg mg/kg date / time Oil & Grease (Hexane Extr)96.4 J 46.7 142 1 10/25/2023 00:21 WG2156855 Wet Chemistry by Method USDA LOI Result Qualifier MDL RDL Dilution Analysis Batch Analyte mg/kg mg/kg mg/kg date / time TOC (Total Organic Carbon)7510 3.33 10.0 1 10/31/2023 09:20 WG2161083 Volatile Organic Compounds (GC) by Method 8015D/GRO Result (dry)Qualifier MDL (dry)RDL (dry)Dilution Analysis Batch Analyte mg/kg mg/kg mg/kg date / time TPH (GC/FID) Low Fraction 1.50 J 1.01 4.67 25 10/29/2023 09:54 WG2159686 (S) a,a,a-Trifluorotoluene(FID)97.9 77.0-120 10/29/2023 09:54 WG2159686 Volatile Organic Compounds (GC/MS) by Method 8260B Result (dry)Qualifier MDL (dry)RDL (dry)Dilution Analysis Batch Analyte mg/kg mg/kg mg/kg date / time Benzene U 0.000871 0.00187 1 10/26/2023 01:20 WG2158141 Toluene U 0.00243 0.00933 1 10/26/2023 01:20 WG2158141 Ethylbenzene U 0.00138 0.00467 1 10/26/2023 01:20 WG2158141 Total Xylenes U 0.00164 0.0121 1 10/26/2023 01:20 WG2158141 Methyl tert-butyl ether U 0.000653 0.00187 1 10/26/2023 01:20 WG2158141 1,2-Dibromoethane U 0.00121 0.00467 1 10/26/2023 01:20 WG2158141 1,2-Dichloroethane U 0.00121 0.00467 1 10/26/2023 01:20 WG2158141 Naphthalene 0.0145 J 0.00911 0.0233 1 10/26/2023 01:20 WG2158141 (S) Toluene-d8 110 75.0-131 10/26/2023 01:20 WG2158141 (S) 4-Bromofluorobenzene 105 67.0-138 10/26/2023 01:20 WG2158141 (S) 1,2-Dichloroethane-d4 85.6 70.0-130 10/26/2023 01:20 WG2158141 Semi-Volatile Organic Compounds (GC) by Method 8015D Result (dry)Qualifier MDL (dry)RDL (dry)Dilution Analysis Batch Analyte mg/kg mg/kg mg/kg date / time C10-C28 Diesel Range U 2.28 5.66 1 10/31/2023 12:16 WG2160102 C28-C40 Oil Range 1.70 J 0.388 5.66 1 10/31/2023 12:16 WG2160102 (S) o-Terphenyl 55.3 18.0-148 10/31/2023 12:16 WG2160102 Semi-Volatile Organic Compounds (GC) by Method 8015-SGT Result (dry)Qualifier MDL (dry)RDL (dry)Dilution Analysis Batch Analyte mg/kg mg/kg mg/kg date / time C10-C28 Diesel Range U 2.28 5.66 1 10/31/2023 12:16 WG2160105 C28-C40 Oil Range 1.70 J 0.388 5.66 1 10/31/2023 12:16 WG2160105 (S) o-Terphenyl 55.3 18.0-148 10/31/2023 12:16 WG2160105 Sample Narrative: L1669100-05 WG2160105: Reporting from non-silica gel data due to non-detect to the RDL. 1 Cp 2 Tc 3 Ss 4 Cn 5 Sr 6 Qc 7 Gl 8 Al 9 Sc ACCOUNT:PROJECT:SDG:DATE/TIME:PAGE: Arcadis - Chevron - UT 30064298 07.21 L1669100 11/02/23 08:52 10 of 27 ACCOUNT:PROJECT:SDG:DATE/TIME:PAGE: Arcadis - Chevron - UT 30064298 07.21 L1669100 11/02/23 09:10 10 of 27 SAMPLE RESULTS - 06 L1669100 MW-11-S-20-21.5-231018 Collected date/time: 10/18/23 09:50 Total Solids by Method 2540 G-2011 Result Qualifier Dilution Analysis Batch Analyte %date / time Total Solids 68.2 1 10/27/2023 12:04 WG2158330 Wet Chemistry by Method 9071B Result (dry)Qualifier MDL (dry)RDL (dry)Dilution Analysis Batch Analyte mg/kg mg/kg mg/kg date / time Oil & Grease (Hexane Extr)57.5 J 48.4 147 1 10/25/2023 00:21 WG2156855 Wet Chemistry by Method USDA LOI Result Qualifier MDL RDL Dilution Analysis Batch Analyte mg/kg mg/kg mg/kg date / time TOC (Total Organic Carbon)7500 3.33 10.0 1 10/31/2023 09:20 WG2161083 Volatile Organic Compounds (GC) by Method 8015D/GRO Result (dry)Qualifier MDL (dry)RDL (dry)Dilution Analysis Batch Analyte mg/kg mg/kg mg/kg date / time TPH (GC/FID) Low Fraction 4.30 J 1.05 4.84 25 10/29/2023 10:13 WG2159686 (S) a,a,a-Trifluorotoluene(FID)97.1 77.0-120 10/29/2023 10:13 WG2159686 Volatile Organic Compounds (GC/MS) by Method 8260B Result (dry)Qualifier MDL (dry)RDL (dry)Dilution Analysis Batch Analyte mg/kg mg/kg mg/kg date / time Benzene U 0.000904 0.00194 1 10/26/2023 01:39 WG2158141 Toluene U 0.00252 0.00968 1 10/26/2023 01:39 WG2158141 Ethylbenzene 0.0224 0.00143 0.00484 1 10/26/2023 01:39 WG2158141 Total Xylenes U 0.00170 0.0126 1 10/26/2023 01:39 WG2158141 Methyl tert-butyl ether U 0.000677 0.00194 1 10/26/2023 01:39 WG2158141 1,2-Dibromoethane U 0.00125 0.00484 1 10/26/2023 01:39 WG2158141 1,2-Dichloroethane U 0.00126 0.00484 1 10/26/2023 01:39 WG2158141 Naphthalene U 0.00944 0.0242 1 10/26/2023 01:39 WG2158141 (S) Toluene-d8 109 75.0-131 10/26/2023 01:39 WG2158141 (S) 4-Bromofluorobenzene 104 67.0-138 10/26/2023 01:39 WG2158141 (S) 1,2-Dichloroethane-d4 90.6 70.0-130 10/26/2023 01:39 WG2158141 Semi-Volatile Organic Compounds (GC) by Method 8015D Result (dry)Qualifier MDL (dry)RDL (dry)Dilution Analysis Batch Analyte mg/kg mg/kg mg/kg date / time C10-C28 Diesel Range 30.5 2.36 5.86 1 10/31/2023 12:53 WG2160102 C28-C40 Oil Range 10.8 0.401 5.86 1 10/31/2023 12:53 WG2160102 (S) o-Terphenyl 62.3 18.0-148 10/31/2023 12:53 WG2160102 Semi-Volatile Organic Compounds (GC) by Method 8015-SGT Result (dry)Qualifier MDL (dry)RDL (dry)Dilution Analysis Batch Analyte mg/kg mg/kg mg/kg date / time C10-C28 Diesel Range 26.8 2.36 5.86 1 10/31/2023 21:50 WG2160105 C28-C40 Oil Range 5.69 J 0.401 5.86 1 10/31/2023 21:50 WG2160105 (S) o-Terphenyl 61.7 18.0-148 10/31/2023 21:50 WG2160105 1 Cp 2 Tc 3 Ss 4 Cn 5 Sr 6 Qc 7 Gl 8 Al 9 Sc ACCOUNT:PROJECT:SDG:DATE/TIME:PAGE: Arcadis - Chevron - UT 30064298 07.21 L1669100 11/02/23 08:52 11 of 27 ACCOUNT:PROJECT:SDG:DATE/TIME:PAGE: Arcadis - Chevron - UT 30064298 07.21 L1669100 11/02/23 09:10 11 of 27 SAMPLE RESULTS - 07 L1669100 MW-14-S-5.5-6.5-231018 Collected date/time: 10/18/23 14:15 Total Solids by Method 2540 G-2011 Result Qualifier Dilution Analysis Batch Analyte %date / time Total Solids 78.1 1 10/27/2023 11:39 WG2158332 Wet Chemistry by Method 9071B Result (dry)Qualifier MDL (dry)RDL (dry)Dilution Analysis Batch Analyte mg/kg mg/kg mg/kg date / time Oil & Grease (Hexane Extr)472 42.3 128 1 10/25/2023 00:21 WG2156855 Wet Chemistry by Method USDA LOI Result Qualifier MDL RDL Dilution Analysis Batch Analyte mg/kg mg/kg mg/kg date / time TOC (Total Organic Carbon)4160 3.33 10.0 1 10/31/2023 09:20 WG2161083 Volatile Organic Compounds (GC) by Method 8015D/GRO Result (dry)Qualifier MDL (dry)RDL (dry)Dilution Analysis Batch Analyte mg/kg mg/kg mg/kg date / time TPH (GC/FID) Low Fraction 30.8 0.889 4.09 25 10/29/2023 10:33 WG2159686 (S) a,a,a-Trifluorotoluene(FID)97.5 77.0-120 10/29/2023 10:33 WG2159686 Volatile Organic Compounds (GC/MS) by Method 8260B Result (dry)Qualifier MDL (dry)RDL (dry)Dilution Analysis Batch Analyte mg/kg mg/kg mg/kg date / time Benzene U 0.000764 0.00164 1 10/26/2023 01:58 WG2158141 Toluene U 0.00213 0.00818 1 10/26/2023 01:58 WG2158141 Ethylbenzene 0.00740 0.00121 0.00409 1 10/26/2023 01:58 WG2158141 Total Xylenes 0.00391 J 0.00144 0.0106 1 10/26/2023 01:58 WG2158141 Methyl tert-butyl ether U 0.000573 0.00164 1 10/26/2023 01:58 WG2158141 1,2-Dibromoethane U 0.00106 0.00409 1 10/26/2023 01:58 WG2158141 1,2-Dichloroethane U 0.00106 0.00409 1 10/26/2023 01:58 WG2158141 Naphthalene U 0.00799 0.0205 1 10/26/2023 01:58 WG2158141 (S) Toluene-d8 109 75.0-131 10/26/2023 01:58 WG2158141 (S) 4-Bromofluorobenzene 106 67.0-138 10/26/2023 01:58 WG2158141 (S) 1,2-Dichloroethane-d4 87.3 70.0-130 10/26/2023 01:58 WG2158141 Semi-Volatile Organic Compounds (GC) by Method 8015D Result (dry)Qualifier MDL (dry)RDL (dry)Dilution Analysis Batch Analyte mg/kg mg/kg mg/kg date / time C10-C28 Diesel Range 2840 103 256 50 10/31/2023 14:55 WG2160102 C28-C40 Oil Range 26.9 J 3.51 51.2 10 10/31/2023 13:30 WG2160102 (S) o-Terphenyl 0.000 J7 18.0-148 10/31/2023 14:55 WG2160102 (S) o-Terphenyl 696 J1 18.0-148 10/31/2023 13:30 WG2160102 Sample Narrative: L1669100-07 WG2160102: Dilution and surrogate failure due to matrix interference. Semi-Volatile Organic Compounds (GC) by Method 8015-SGT Result (dry)Qualifier MDL (dry)RDL (dry)Dilution Analysis Batch Analyte mg/kg mg/kg mg/kg date / time C10-C28 Diesel Range 1330 103 256 50 10/31/2023 23:08 WG2160105 C28-C40 Oil Range U 17.5 256 50 10/31/2023 23:08 WG2160105 (S) o-Terphenyl 0.000 J7 18.0-148 10/31/2023 23:08 WG2160105 Sample Narrative: 1 Cp 2 Tc 3 Ss 4 Cn 5 Sr 6 Qc 7 Gl 8 Al 9 Sc ACCOUNT:PROJECT:SDG:DATE/TIME:PAGE: Arcadis - Chevron - UT 30064298 07.21 L1669100 11/02/23 08:52 12 of 27 ACCOUNT:PROJECT:SDG:DATE/TIME:PAGE: Arcadis - Chevron - UT 30064298 07.21 L1669100 11/02/23 09:10 12 of 27 SAMPLE RESULTS - 07 L1669100 MW-14-S-5.5-6.5-231018 Collected date/time: 10/18/23 14:15 Semi-Volatile Organic Compounds (GC) by Method 8015-SGT Result (dry)Qualifier MDL (dry)RDL (dry)Dilution Analysis Batch Analyte mg/kg mg/kg mg/kg date / time L1669100-07 WG2160105: 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: Arcadis - Chevron - UT 30064298 07.21 L1669100 11/02/23 08:52 13 of 27 ACCOUNT:PROJECT:SDG:DATE/TIME:PAGE: Arcadis - Chevron - UT 30064298 07.21 L1669100 11/02/23 09:10 13 of 27 SAMPLE RESULTS - 08 L1669100 MW-14-S-20-21.5-231018 Collected date/time: 10/18/23 15:02 Total Solids by Method 2540 G-2011 Result Qualifier Dilution Analysis Batch Analyte %date / time Total Solids 75.4 1 10/27/2023 11:39 WG2158332 Wet Chemistry by Method 9071B Result (dry)Qualifier MDL (dry)RDL (dry)Dilution Analysis Batch Analyte mg/kg mg/kg mg/kg date / time Oil & Grease (Hexane Extr)77.7 J 43.8 133 1 10/25/2023 00:21 WG2156855 Wet Chemistry by Method USDA LOI Result Qualifier MDL RDL Dilution Analysis Batch Analyte mg/kg mg/kg mg/kg date / time TOC (Total Organic Carbon)4340 3.33 10.0 1 10/31/2023 09:20 WG2161083 Volatile Organic Compounds (GC) by Method 8015D/GRO Result (dry)Qualifier MDL (dry)RDL (dry)Dilution Analysis Batch Analyte mg/kg mg/kg mg/kg date / time TPH (GC/FID) Low Fraction U 0.948 4.36 25 10/30/2023 21:08 WG2160620 (S) a,a,a-Trifluorotoluene(FID)96.3 77.0-120 10/30/2023 21:08 WG2160620 Volatile Organic Compounds (GC/MS) by Method 8260B Result (dry)Qualifier MDL (dry)RDL (dry)Dilution Analysis Batch Analyte mg/kg mg/kg mg/kg date / time Benzene U 0.000815 0.00174 1 10/26/2023 02:16 WG2158141 Toluene U 0.00227 0.00872 1 10/26/2023 02:16 WG2158141 Ethylbenzene U 0.00129 0.00436 1 10/26/2023 02:16 WG2158141 Total Xylenes U 0.00154 0.0113 1 10/26/2023 02:16 WG2158141 Methyl tert-butyl ether U 0.000611 0.00174 1 10/26/2023 02:16 WG2158141 1,2-Dibromoethane U 0.00113 0.00436 1 10/26/2023 02:16 WG2158141 1,2-Dichloroethane U 0.00113 0.00436 1 10/26/2023 02:16 WG2158141 Naphthalene U 0.00852 0.0218 1 10/26/2023 02:16 WG2158141 (S) Toluene-d8 105 75.0-131 10/26/2023 02:16 WG2158141 (S) 4-Bromofluorobenzene 107 67.0-138 10/26/2023 02:16 WG2158141 (S) 1,2-Dichloroethane-d4 87.5 70.0-130 10/26/2023 02:16 WG2158141 Semi-Volatile Organic Compounds (GC) by Method 8015D Result (dry)Qualifier MDL (dry)RDL (dry)Dilution Analysis Batch Analyte mg/kg mg/kg mg/kg date / time C10-C28 Diesel Range 11.1 2.14 5.31 1 10/31/2023 12:04 WG2160102 C28-C40 Oil Range 3.73 J 0.364 5.31 1 10/31/2023 12:04 WG2160102 (S) o-Terphenyl 63.6 18.0-148 10/31/2023 12:04 WG2160102 Semi-Volatile Organic Compounds (GC) by Method 8015-SGT Result (dry)Qualifier MDL (dry)RDL (dry)Dilution Analysis Batch Analyte mg/kg mg/kg mg/kg date / time C10-C28 Diesel Range 8.86 2.14 5.31 1 10/31/2023 21:01 WG2160105 C28-C40 Oil Range 1.26 J 0.364 5.31 1 10/31/2023 21:01 WG2160105 (S) o-Terphenyl 56.9 18.0-148 10/31/2023 21:01 WG2160105 1 Cp 2 Tc 3 Ss 4 Cn 5 Sr 6 Qc 7 Gl 8 Al 9 Sc ACCOUNT:PROJECT:SDG:DATE/TIME:PAGE: Arcadis - Chevron - UT 30064298 07.21 L1669100 11/02/23 08:52 14 of 27 ACCOUNT:PROJECT:SDG:DATE/TIME:PAGE: Arcadis - Chevron - UT 30064298 07.21 L1669100 11/02/23 09:10 14 of 27 QUALITY CONTROL SUMMARYWG2158330 Total Solids by Method 2540 G-2011 L1669100-01,02,03,04,05,06 Method Blank (MB) (MB) R3992315-1 10/27/23 12:04 MB Result MB Qualifier MB MDL MB RDL Analyte %%% Total Solids 0.00100 L1669065-02 Original Sample (OS) • Duplicate (DUP) (OS) L1669065-02 10/27/23 12:04 • (DUP) R3992315-3 10/27/23 12:04 Original Result DUP Result Dilution DUP RPD DUP Qualifier DUP RPD Limits Analyte %%%% Total Solids 78.4 78.8 1 0.612 10 Laboratory Control Sample (LCS) (LCS) R3992315-2 10/27/23 12:04 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: Arcadis - Chevron - UT 30064298 07.21 L1669100 11/02/23 08:52 15 of 27 ACCOUNT:PROJECT:SDG:DATE/TIME:PAGE: Arcadis - Chevron - UT 30064298 07.21 L1669100 11/02/23 09:10 15 of 27 QUALITY CONTROL SUMMARYWG2158332 Total Solids by Method 2540 G-2011 L1669100-07,08 Method Blank (MB) (MB) R3992314-1 10/27/23 11:39 MB Result MB Qualifier MB MDL MB RDL Analyte %%% Total Solids 0.00100 L1669348-02 Original Sample (OS) • Duplicate (DUP) (OS) L1669348-02 10/27/23 11:39 • (DUP) R3992314-3 10/27/23 11:39 Original Result DUP Result Dilution DUP RPD DUP Qualifier DUP RPD Limits Analyte %%%% Total Solids 43.1 42.3 1 1.99 10 Laboratory Control Sample (LCS) (LCS) R3992314-2 10/27/23 11:39 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: Arcadis - Chevron - UT 30064298 07.21 L1669100 11/02/23 08:52 16 of 27 ACCOUNT:PROJECT:SDG:DATE/TIME:PAGE: Arcadis - Chevron - UT 30064298 07.21 L1669100 11/02/23 09:10 16 of 27 QUALITY CONTROL SUMMARYWG2156855 Wet Chemistry by Method 9071B L1669100-01,02,03,04,05,06,07,08 Method Blank (MB) (MB) R3990913-1 10/25/23 00:21 MB Result MB Qualifier MB MDL MB RDL Analyte mg/kg mg/kg mg/kg Oil & Grease (Hexane Extr)U 33.0 100 L1668181-01 Original Sample (OS) • Duplicate (DUP) (OS) L1668181-01 10/25/23 00:21 • (DUP) R3990913-4 10/25/23 00:21 Original Result (dry) DUP Result (dry)Dilution DUP RPD DUP Qualifier DUP RPD Limits Analyte mg/kg mg/kg %% Oil & Grease (Hexane Extr)73.0 322 1 126 P1 20 Laboratory Control Sample (LCS) • Laboratory Control Sample Duplicate (LCSD) (LCS) R3990913-2 10/25/23 00:21 • (LCSD) R3990913-3 10/25/23 00:21 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 %%%%% Oil & Grease (Hexane Extr)4000 3830 3620 95.8 90.5 80.0-120 5.64 20 L1668181-01 Original Sample (OS) • Matrix Spike (MS) • Matrix Spike Duplicate (MSD) (OS) L1668181-01 10/25/23 00:21 • (MS) R3990913-5 10/25/23 00:21 • (MSD) R3990913-6 10/25/23 00:21 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 %%%%% Oil & Grease (Hexane Extr)5000 73.0 4680 4500 92.1 88.5 1 80.0-120 3.94 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: Arcadis - Chevron - UT 30064298 07.21 L1669100 11/02/23 08:52 17 of 27 ACCOUNT:PROJECT:SDG:DATE/TIME:PAGE: Arcadis - Chevron - UT 30064298 07.21 L1669100 11/02/23 09:10 17 of 27 QUALITY CONTROL SUMMARYWG2161083 Wet Chemistry by Method USDA LOI L1669100-01,02,03,04,05,06,07,08 Method Blank (MB) (MB) R3994281-1 10/31/23 09:20 MB Result MB Qualifier MB MDL MB RDL Analyte mg/kg mg/kg mg/kg TOC (Total Organic Carbon)U 3.33 10.0 L1669100-01 Original Sample (OS) • Duplicate (DUP) (OS) L1669100-01 10/31/23 09:20 • (DUP) R3994281-3 10/31/23 09:20 Original Result DUP Result Dilution DUP RPD DUP Qualifier DUP RPD Limits Analyte mg/kg mg/kg %% TOC (Total Organic Carbon)5890 5630 1 4.53 20 L1669100-02 Original Sample (OS) • Duplicate (DUP) (OS) L1669100-02 10/31/23 09:20 • (DUP) R3994281-4 10/31/23 09:20 Original Result DUP Result Dilution DUP RPD DUP Qualifier DUP RPD Limits Analyte mg/kg mg/kg %% TOC (Total Organic Carbon)4700 4490 1 4.71 20 Laboratory Control Sample (LCS) (LCS) R3994281-2 10/31/23 09:20 Spike Amount LCS Result LCS Rec.Rec. Limits LCS Qualifier Analyte mg/kg mg/kg %% TOC (Total Organic Carbon)10300 13400 130 9.07-184 1 Cp 2 Tc 3 Ss 4 Cn 5 Sr 6 Qc 7 Gl 8 Al 9 Sc ACCOUNT:PROJECT:SDG:DATE/TIME:PAGE: Arcadis - Chevron - UT 30064298 07.21 L1669100 11/02/23 08:52 18 of 27 ACCOUNT:PROJECT:SDG:DATE/TIME:PAGE: Arcadis - Chevron - UT 30064298 07.21 L1669100 11/02/23 09:10 18 of 27 QUALITY CONTROL SUMMARYWG2159425 Volatile Organic Compounds (GC) by Method 8015D/GRO L1669100-01 Method Blank (MB) (MB) R3992724-3 10/28/23 11:31 MB Result MB Qualifier MB MDL MB RDL Analyte mg/kg mg/kg mg/kg TPH (GC/FID) Low Fraction 0.995 J 0.543 2.50 (S) a,a,a-Trifluorotoluene(FID)92.2 77.0-120 Laboratory Control Sample (LCS) • Laboratory Control Sample Duplicate (LCSD) (LCS) R3992724-1 10/28/23 09:59 • (LCSD) R3992724-2 10/28/23 10:22 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 5.86 5.38 107 97.8 72.0-127 8.54 20 (S) a,a,a-Trifluorotoluene(FID) 101 99.9 77.0-120 L1670359-01 Original Sample (OS) • Matrix Spike (MS) • Matrix Spike Duplicate (MSD) (OS) L1670359-01 10/28/23 20:18 • (MS) R3992724-4 10/28/23 20:43 • (MSD) R3992724-5 10/28/23 21:30 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 %%%%% TPH (GC/FID) Low Fraction 169 4.12 125 140 71.6 80.7 25 10.0-151 11.6 28 (S) a,a,a-Trifluorotoluene(FID) 96.8 97.9 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: Arcadis - Chevron - UT 30064298 07.21 L1669100 11/02/23 08:52 19 of 27 ACCOUNT:PROJECT:SDG:DATE/TIME:PAGE: Arcadis - Chevron - UT 30064298 07.21 L1669100 11/02/23 09:10 19 of 27 QUALITY CONTROL SUMMARYWG2159686 Volatile Organic Compounds (GC) by Method 8015D/GRO L1669100-02,03,04,05,06,07 Method Blank (MB) (MB) R3992688-2 10/29/23 02:08 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)97.4 77.0-120 Laboratory Control Sample (LCS) (LCS) R3992688-1 10/28/23 23:47 Spike Amount LCS Result LCS Rec.Rec. Limits LCS Qualifier Analyte mg/kg mg/kg %% TPH (GC/FID) Low Fraction 5.50 5.64 103 72.0-127 (S) a,a,a-Trifluorotoluene(FID) 102 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: Arcadis - Chevron - UT 30064298 07.21 L1669100 11/02/23 08:52 20 of 27 ACCOUNT:PROJECT:SDG:DATE/TIME:PAGE: Arcadis - Chevron - UT 30064298 07.21 L1669100 11/02/23 09:10 20 of 27 QUALITY CONTROL SUMMARYWG2160620 Volatile Organic Compounds (GC) by Method 8015D/GRO L1669100-08 Method Blank (MB) (MB) R3993324-2 10/30/23 20:19 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)96.1 77.0-120 Laboratory Control Sample (LCS) (LCS) R3993324-1 10/30/23 19:21 Spike Amount LCS Result LCS Rec.Rec. Limits LCS Qualifier Analyte mg/kg mg/kg %% TPH (GC/FID) Low Fraction 5.50 5.50 100 72.0-127 (S) a,a,a-Trifluorotoluene(FID) 104 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: Arcadis - Chevron - UT 30064298 07.21 L1669100 11/02/23 08:52 21 of 27 ACCOUNT:PROJECT:SDG:DATE/TIME:PAGE: Arcadis - Chevron - UT 30064298 07.21 L1669100 11/02/23 09:10 21 of 27 QUALITY CONTROL SUMMARYWG2158141 Volatile Organic Compounds (GC/MS) by Method 8260B L1669100-01,02,03,04,05,06,07,08 Method Blank (MB) (MB) R3991672-3 10/25/23 22:44 MB Result MB Qualifier MB MDL MB RDL Analyte mg/kg mg/kg mg/kg Benzene U 0.000467 0.00100 Toluene U 0.00130 0.00500 Ethylbenzene U 0.000737 0.00250 Total Xylenes U 0.000880 0.00650 Methyl tert-butyl ether U 0.000350 0.00100 1,2-Dibromoethane U 0.000648 0.00250 1,2-Dichloroethane U 0.000649 0.00250 Naphthalene U 0.00488 0.0125 (S) Toluene-d8 103 75.0-131 (S) 4-Bromofluorobenzene 100 67.0-138 (S) 1,2-Dichloroethane-d4 105 70.0-130 Laboratory Control Sample (LCS) • Laboratory Control Sample Duplicate (LCSD) (LCS) R3991672-1 10/25/23 21:10 • (LCSD) R3991672-2 10/25/23 21:29 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 %%%%% Benzene 0.125 0.127 0.125 102 100 70.0-123 1.59 20 Toluene 0.125 0.131 0.128 105 102 75.0-121 2.32 20 Ethylbenzene 0.125 0.135 0.141 108 113 74.0-126 4.35 20 Total Xylenes 0.375 0.387 0.398 103 106 72.0-127 2.80 20 Methyl tert-butyl ether 0.125 0.108 0.107 86.4 85.6 66.0-132 0.930 20 1,2-Dibromoethane 0.125 0.118 0.121 94.4 96.8 74.0-128 2.51 20 1,2-Dichloroethane 0.125 0.118 0.115 94.4 92.0 65.0-131 2.58 20 Naphthalene 0.125 0.128 0.128 102 102 59.0-130 0.000 20 (S) Toluene-d8 103 105 75.0-131 (S) 4-Bromofluorobenzene 101 104 67.0-138 (S) 1,2-Dichloroethane-d4 98.8 101 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: Arcadis - Chevron - UT 30064298 07.21 L1669100 11/02/23 08:52 22 of 27 ACCOUNT:PROJECT:SDG:DATE/TIME:PAGE: Arcadis - Chevron - UT 30064298 07.21 L1669100 11/02/23 09:10 22 of 27 QUALITY CONTROL SUMMARYWG2160102 Semi-Volatile Organic Compounds (GC) by Method 8015D L1669100-01,02,03,04,05,06,07,08 Method Blank (MB) (MB) R3993289-1 10/31/23 10:18 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 66.7 18.0-148 Laboratory Control Sample (LCS) (LCS) R3993289-2 10/31/23 10:31 Spike Amount LCS Result LCS Rec.Rec. Limits LCS Qualifier Analyte mg/kg mg/kg %% C10-C28 Diesel Range 50.0 38.2 76.4 50.0-150 (S) o-Terphenyl 72.1 18.0-148 L1669100-01 Original Sample (OS) • Matrix Spike (MS) • Matrix Spike Duplicate (MSD) (OS) L1669100-01 10/31/23 13:17 • (MS) R3993530-1 10/31/23 13:30 • (MSD) R3993530-2 10/31/23 13:42 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 63.3 2.32 46.0 49.6 68.9 74.7 1 50.0-150 7.68 20 (S) o-Terphenyl 60.5 54.5 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: Arcadis - Chevron - UT 30064298 07.21 L1669100 11/02/23 08:52 23 of 27 ACCOUNT:PROJECT:SDG:DATE/TIME:PAGE: Arcadis - Chevron - UT 30064298 07.21 L1669100 11/02/23 09:10 23 of 27 QUALITY CONTROL SUMMARYWG2160105 Semi-Volatile Organic Compounds (GC) by Method 8015-SGT L1669100-01,02,03,04,05,06,07,08 Method Blank (MB) (MB) R3993640-1 10/31/23 21:01 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 43.4 18.0-148 Laboratory Control Sample (LCS) (LCS) R3993640-2 10/31/23 21:13 Spike Amount LCS Result LCS Rec.Rec. Limits LCS Qualifier Analyte mg/kg mg/kg %% C10-C28 Diesel Range 50.0 34.5 69.0 50.0-150 (S) o-Terphenyl 55.7 18.0-148 L1669100-01 Original Sample (OS) • Matrix Spike (MS) • Matrix Spike Duplicate (MSD) (OS) L1669100-01 10/31/23 21:26 • (MS) R3993640-4 11/01/23 01:28 • (MSD) R3993640-3 10/31/23 21:38 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 63.3 U 42.5 42.3 67.2 66.8 1 50.0-150 0.597 20 (S) o-Terphenyl 54.1 56.9 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: Arcadis - Chevron - UT 30064298 07.21 L1669100 11/02/23 08:52 24 of 27 ACCOUNT:PROJECT:SDG:DATE/TIME:PAGE: Arcadis - Chevron - UT 30064298 07.21 L1669100 11/02/23 09:10 24 of 27 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. MDL (dry)Method Detection Limit. 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. J1 Surrogate recovery limits have been exceeded; values are outside upper control limits. J7 Surrogate recovery cannot be used for control limit evaluation due to dilution. P1 RPD value not applicable for sample concentrations less than 5 times the reporting limit. 1 Cp 2 Tc 3 Ss 4 Cn 5 Sr 6 Qc 7 Gl 8 Al 9 Sc ACCOUNT:PROJECT:SDG:DATE/TIME:PAGE: Arcadis - Chevron - UT 30064298 07.21 L1669100 11/02/23 08:52 25 of 27 ACCOUNT:PROJECT:SDG:DATE/TIME:PAGE: Arcadis - Chevron - UT 30064298 07.21 L1669100 11/02/23 09:10 25 of 27 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: Arcadis - Chevron - UT 30064298 07.21 L1669100 11/02/23 08:52 26 of 27 ACCOUNT:PROJECT:SDG:DATE/TIME:PAGE: Arcadis - Chevron - UT 30064298 07.21 L1669100 11/02/23 09:10 26 of 27 ANALYTICAL REPORT November 13, 2023 Arcadis - Chevron - UT Sample Delivery Group:L1670618 Samples Received:10/26/2023 Project Number:30064298 07.21 Description:377352 Site:1917 WEST 1700 SOUTH, SLC Report To:Carissa Mason 10 Exchange Place Suite 112 Salt Lake City, UT 84111 Entire Report Reviewed By: November 13, 2023 [Preliminary Report] Brian Ford 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: Arcadis - Chevron - UT 30064298 07.21 L1670618 11/13/23 12:00 1 of 39 November 13, 2023 Brian Ford Project Manager ACCOUNT:PROJECT:SDG:DATE/TIME:PAGE: Arcadis - Chevron - UT 30064298 07.21 L1670618 11/13/23 13:02 1 of 39 TABLE OF CONTENTS Cp: Cover Page 1 Tc: Table of Contents 2 Ss: Sample Summary 3 Cn: Case Narrative 5 Sr: Sample Results 6 MW-8-S-5-6-231023 L1670618-01 6 MW-8-S-10-10.75-231023 L1670618-02 8 MW-8-S-21-21.5-231023 L1670618-03 9 MW-5-S-10-10.75-231024 L1670618-04 10 MW-5-S-20-21.5-231024 L1670618-05 11 BD-4-S-231024 L1670618-06 12 EB-1-231024 L1670618-07 13 EB-2-231024 L1670618-08 14 TRIP BLANK-231024 L1670618-09 15 Qc: Quality Control Summary 16 Total Solids by Method 2540 G-2011 16 Wet Chemistry by Method 1664A 18 Wet Chemistry by Method 9060A 19 Wet Chemistry by Method 9071B 20 Wet Chemistry by Method USDA LOI 21 Volatile Organic Compounds (GC) by Method 8015D/GRO 24 Volatile Organic Compounds (GC/MS) by Method 8260B 27 Semi-Volatile Organic Compounds (GC) by Method 8015D 30 Semi-Volatile Organic Compounds (GC) by Method 8015-SGT 33 Gl: Glossary of Terms 36 Al: Accreditations & Locations 37 Sc: Sample Chain of Custody 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: Arcadis - Chevron - UT 30064298 07.21 L1670618 11/13/23 12:00 2 of 39 ACCOUNT:PROJECT:SDG:DATE/TIME:PAGE: Arcadis - Chevron - UT 30064298 07.21 L1670618 11/13/23 13:02 2 of 39 SAMPLE SUMMARY Collected by Collected date/time Received date/time MW-8-S-5-6-231023 L1670618-01 Solid LM/BC 10/23/23 16:15 10/26/23 08:00 Method Batch Dilution Preparation Analysis Analyst Location date/time date/time Total Solids by Method 2540 G-2011 WG2160435 1 10/30/23 13:34 10/30/23 13:39 CMK Mt. Juliet, TN Wet Chemistry by Method 9071B WG2162049 1 11/01/23 12:01 11/02/23 17:07 WAW Mt. Juliet, TN Wet Chemistry by Method USDA LOI WG2161077 1 10/31/23 11:16 10/31/23 12:03 JAC Mt. Juliet, TN Volatile Organic Compounds (GC) by Method 8015D/GRO WG2162686 25 10/23/23 16:15 11/02/23 02:13 JAH Mt. Juliet, TN Volatile Organic Compounds (GC/MS) by Method 8260B WG2160051 8 10/28/23 22:21 10/29/23 14:11 JHH Mt. Juliet, TN Semi-Volatile Organic Compounds (GC) by Method 8015D WG2160102 25 10/30/23 20:50 10/31/23 13:42 KAP Mt. Juliet, TN Semi-Volatile Organic Compounds (GC) by Method 8015-SGT WG2160105 25 10/30/23 20:50 10/31/23 23:08 JAS Mt. Juliet, TN Collected by Collected date/time Received date/time MW-8-S-10-10.75-231023 L1670618-02 Solid LM/BC 10/23/23 16:50 10/26/23 08:00 Method Batch Dilution Preparation Analysis Analyst Location date/time date/time Total Solids by Method 2540 G-2011 WG2160435 1 10/30/23 13:34 10/30/23 13:39 CMK Mt. Juliet, TN Wet Chemistry by Method 9071B WG2162049 1 11/01/23 12:01 11/02/23 17:07 WAW Mt. Juliet, TN Wet Chemistry by Method USDA LOI WG2163308 1 11/02/23 14:13 11/02/23 15:23 MM Mt. Juliet, TN Volatile Organic Compounds (GC) by Method 8015D/GRO WG2162719 25 10/23/23 16:50 11/02/23 05:38 ADM Mt. Juliet, TN Volatile Organic Compounds (GC/MS) by Method 8260B WG2160051 1 10/27/23 11:12 10/29/23 12:17 JHH Mt. Juliet, TN Semi-Volatile Organic Compounds (GC) by Method 8015D WG2160402 1 11/02/23 04:52 11/02/23 13:49 JAS Mt. Juliet, TN Semi-Volatile Organic Compounds (GC) by Method 8015-SGT WG2160403 1 11/02/23 04:53 11/02/23 17:21 JAS Mt. Juliet, TN Collected by Collected date/time Received date/time MW-8-S-21-21.5-231023 L1670618-03 Solid LM/BC 10/23/23 17:25 10/26/23 08:00 Method Batch Dilution Preparation Analysis Analyst Location date/time date/time Total Solids by Method 2540 G-2011 WG2160436 1 10/31/23 10:27 10/31/23 10:53 CMK Mt. Juliet, TN Wet Chemistry by Method 9071B WG2162049 1 11/01/23 12:01 11/02/23 17:07 WAW Mt. Juliet, TN Wet Chemistry by Method USDA LOI WG2161313 1 10/31/23 13:24 10/31/23 13:51 JAC Mt. Juliet, TN Volatile Organic Compounds (GC) by Method 8015D/GRO WG2162719 25 10/23/23 17:25 11/02/23 06:07 ADM Mt. Juliet, TN Volatile Organic Compounds (GC/MS) by Method 8260B WG2160051 1 10/28/23 22:21 10/29/23 12:36 JHH Mt. Juliet, TN Semi-Volatile Organic Compounds (GC) by Method 8015D WG2160402 1 11/02/23 04:52 11/02/23 13:49 JAS Mt. Juliet, TN Semi-Volatile Organic Compounds (GC) by Method 8015-SGT WG2160403 1 11/02/23 04:53 11/02/23 17:33 JAS Mt. Juliet, TN Collected by Collected date/time Received date/time MW-5-S-10-10.75-231024 L1670618-04 Solid LM/BC 10/24/23 10:30 10/26/23 08:00 Method Batch Dilution Preparation Analysis Analyst Location date/time date/time Total Solids by Method 2540 G-2011 WG2160436 1 10/31/23 10:27 10/31/23 10:53 CMK Mt. Juliet, TN Wet Chemistry by Method 9071B WG2162049 1 11/01/23 12:01 11/02/23 17:07 WAW Mt. Juliet, TN Wet Chemistry by Method USDA LOI WG2161313 1 10/31/23 13:24 10/31/23 13:51 JAC Mt. Juliet, TN Volatile Organic Compounds (GC) by Method 8015D/GRO WG2162686 25 10/24/23 10:30 11/02/23 02:33 JAH Mt. Juliet, TN Volatile Organic Compounds (GC/MS) by Method 8260B WG2160051 1 10/24/23 10:30 10/29/23 12:56 JHH Mt. Juliet, TN Semi-Volatile Organic Compounds (GC) by Method 8015D WG2160402 1 11/02/23 04:52 11/02/23 13:12 JAS Mt. Juliet, TN Semi-Volatile Organic Compounds (GC) by Method 8015-SGT WG2160403 1 11/02/23 04:53 11/02/23 17:33 JAS Mt. Juliet, TN Collected by Collected date/time Received date/time MW-5-S-20-21.5-231024 L1670618-05 Solid LM/BC 10/24/23 12:00 10/26/23 08:00 Method Batch Dilution Preparation Analysis Analyst Location date/time date/time Total Solids by Method 2540 G-2011 WG2160436 1 10/31/23 10:27 10/31/23 10:53 CMK Mt. Juliet, TN Wet Chemistry by Method 9071B WG2162049 1 11/01/23 12:01 11/02/23 17:07 WAW Mt. Juliet, TN Wet Chemistry by Method USDA LOI WG2161313 1 10/31/23 13:24 10/31/23 13:51 JAC Mt. Juliet, TN Volatile Organic Compounds (GC) by Method 8015D/GRO WG2162686 25 10/24/23 12:00 11/02/23 02:52 JAH 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: Arcadis - Chevron - UT 30064298 07.21 L1670618 11/13/23 12:00 3 of 39 ACCOUNT:PROJECT:SDG:DATE/TIME:PAGE: Arcadis - Chevron - UT 30064298 07.21 L1670618 11/13/23 13:02 3 of 39 SAMPLE SUMMARY Collected by Collected date/time Received date/time MW-5-S-20-21.5-231024 L1670618-05 Solid LM/BC 10/24/23 12:00 10/26/23 08:00 Method Batch Dilution Preparation Analysis Analyst Location date/time date/time Volatile Organic Compounds (GC/MS) by Method 8260B WG2160051 1 10/28/23 22:21 10/29/23 13:14 JHH Mt. Juliet, TN Semi-Volatile Organic Compounds (GC) by Method 8015D WG2160402 1 11/02/23 04:52 11/02/23 13:00 JAS Mt. Juliet, TN Semi-Volatile Organic Compounds (GC) by Method 8015-SGT WG2160403 1 11/02/23 04:53 11/02/23 13:00 JAS Mt. Juliet, TN Collected by Collected date/time Received date/time BD-4-S-231024 L1670618-06 Solid LM/BC 10/24/23 00:00 10/26/23 08:00 Method Batch Dilution Preparation Analysis Analyst Location date/time date/time Total Solids by Method 2540 G-2011 WG2160436 1 10/31/23 10:27 10/31/23 10:53 CMK Mt. Juliet, TN Wet Chemistry by Method 9071B WG2162049 1 11/01/23 12:01 11/02/23 17:07 WAW Mt. Juliet, TN Wet Chemistry by Method USDA LOI WG2161313 1 10/31/23 13:24 10/31/23 13:51 JAC Mt. Juliet, TN Volatile Organic Compounds (GC) by Method 8015D/GRO WG2162686 25 10/24/23 00:00 11/02/23 03:12 JAH Mt. Juliet, TN Volatile Organic Compounds (GC/MS) by Method 8260B WG2160051 1 10/24/23 00:00 10/29/23 13:33 JHH Mt. Juliet, TN Semi-Volatile Organic Compounds (GC) by Method 8015D WG2160402 1 11/02/23 04:52 11/02/23 13:12 JAS Mt. Juliet, TN Semi-Volatile Organic Compounds (GC) by Method 8015-SGT WG2160403 1 11/02/23 04:53 11/02/23 13:12 JAS Mt. Juliet, TN Collected by Collected date/time Received date/time EB-1-231024 L1670618-07 GW LM/BC 10/24/23 12:40 10/26/23 08:00 Method Batch Dilution Preparation Analysis Analyst Location date/time date/time Wet Chemistry by Method 1664A WG2162054 1 11/01/23 12:07 11/01/23 17:35 WAW Mt. Juliet, TN Wet Chemistry by Method 9060A WG2167709 1 11/11/23 17:02 11/11/23 17:02 ASH Mt. Juliet, TN Volatile Organic Compounds (GC) by Method 8015D/GRO WG2163844 1 11/03/23 13:52 11/03/23 13:52 DWR Mt. Juliet, TN Volatile Organic Compounds (GC/MS) by Method 8260B WG2161370 1 10/31/23 14:11 10/31/23 14:11 JCP Mt. Juliet, TN Semi-Volatile Organic Compounds (GC) by Method 8015D WG2160130 1 10/30/23 13:23 11/01/23 01:25 MAA Mt. Juliet, TN Semi-Volatile Organic Compounds (GC) by Method 8015-SGT WG2160131 1 10/30/23 13:25 11/02/23 23:11 DMG Mt. Juliet, TN Collected by Collected date/time Received date/time EB-2-231024 L1670618-08 GW LM/BC 10/24/23 14:25 10/26/23 08:00 Method Batch Dilution Preparation Analysis Analyst Location date/time date/time Wet Chemistry by Method 1664A WG2162054 1 11/01/23 12:07 11/01/23 17:35 WAW Mt. Juliet, TN Wet Chemistry by Method 9060A WG2167709 1 11/11/23 18:13 11/11/23 18:13 ASH Mt. Juliet, TN Volatile Organic Compounds (GC) by Method 8015D/GRO WG2163844 1 11/03/23 14:14 11/03/23 14:14 DWR Mt. Juliet, TN Volatile Organic Compounds (GC/MS) by Method 8260B WG2161370 1 10/31/23 14:32 10/31/23 14:32 JCP Mt. Juliet, TN Semi-Volatile Organic Compounds (GC) by Method 8015D WG2160130 1 10/30/23 13:23 11/01/23 00:24 MAA Mt. Juliet, TN Semi-Volatile Organic Compounds (GC) by Method 8015-SGT WG2160131 1 10/30/23 13:25 11/01/23 00:24 MAA Mt. Juliet, TN Collected by Collected date/time Received date/time TRIP BLANK-231024 L1670618-09 GW LM/BC 10/24/23 15:45 10/26/23 08:00 Method Batch Dilution Preparation Analysis Analyst Location date/time date/time Volatile Organic Compounds (GC/MS) by Method 8260B WG2161370 1 10/31/23 13:51 10/31/23 13:51 JCP 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: Arcadis - Chevron - UT 30064298 07.21 L1670618 11/13/23 12:00 4 of 39 ACCOUNT:PROJECT:SDG:DATE/TIME:PAGE: Arcadis - Chevron - UT 30064298 07.21 L1670618 11/13/23 13:02 4 of 39 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] Brian Ford 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: Arcadis - Chevron - UT 30064298 07.21 L1670618 11/13/23 12:00 5 of 39 Brian Ford Project Manager ACCOUNT:PROJECT:SDG:DATE/TIME:PAGE: Arcadis - Chevron - UT 30064298 07.21 L1670618 11/13/23 13:02 5 of 39 SAMPLE RESULTS - 01 L1670618 MW-8-S-5-6-231023 Collected date/time: 10/23/23 16:15 Total Solids by Method 2540 G-2011 Result Qualifier Dilution Analysis Batch Analyte %date / time Total Solids 79.4 1 10/30/2023 13:39 WG2160435 Wet Chemistry by Method 9071B Result (dry)Qualifier MDL (dry)RDL (dry)Dilution Analysis Batch Analyte mg/kg mg/kg mg/kg date / time Oil & Grease (Hexane Extr)501 41.5 126 1 11/02/2023 17:07 WG2162049 Wet Chemistry by Method USDA LOI Result Qualifier MDL RDL Dilution Analysis Batch Analyte mg/kg mg/kg mg/kg date / time TOC (Total Organic Carbon)4080 3.33 10.0 1 10/31/2023 12:03 WG2161077 Volatile Organic Compounds (GC) by Method 8015D/GRO Result (dry)Qualifier MDL (dry)RDL (dry)Dilution Analysis Batch Analyte mg/kg mg/kg mg/kg date / time TPH (GC/FID) Low Fraction 25.9 0.868 3.99 25 11/02/2023 02:13 WG2162686 (S) a,a,a-Trifluorotoluene(FID)98.1 77.0-120 11/02/2023 02:13 WG2162686 Volatile Organic Compounds (GC/MS) by Method 8260B Result (dry)Qualifier MDL (dry)RDL (dry)Dilution Analysis Batch Analyte mg/kg mg/kg mg/kg date / time Benzene U 0.00598 0.0128 8 10/29/2023 14:11 WG2160051 Toluene U 0.0166 0.0639 8 10/29/2023 14:11 WG2160051 Ethylbenzene 0.0864 0.00943 0.0320 8 10/29/2023 14:11 WG2160051 Total Xylenes 0.0296 J 0.0112 0.0831 8 10/29/2023 14:11 WG2160051 Methyl tert-butyl ether U 0.00447 0.0128 8 10/29/2023 14:11 WG2160051 1,2-Dibromoethane U 0.00828 0.0320 8 10/29/2023 14:11 WG2160051 1,2-Dichloroethane U 0.00829 0.0320 8 10/29/2023 14:11 WG2160051 Naphthalene 1.59 0.0623 0.160 8 10/29/2023 14:11 WG2160051 (S) Toluene-d8 99.9 75.0-131 10/29/2023 14:11 WG2160051 (S) 4-Bromofluorobenzene 101 67.0-138 10/29/2023 14:11 WG2160051 (S) 1,2-Dichloroethane-d4 119 70.0-130 10/29/2023 14:11 WG2160051 Sample Narrative: L1670618-01 WG2160051: Non-target compounds too high to run at a lower dilution. Semi-Volatile Organic Compounds (GC) by Method 8015D Result (dry)Qualifier MDL (dry)RDL (dry)Dilution Analysis Batch Analyte mg/kg mg/kg mg/kg date / time C10-C28 Diesel Range 2810 50.7 126 25 10/31/2023 13:42 WG2160102 C28-C40 Oil Range 18.5 J 8.62 126 25 10/31/2023 13:42 WG2160102 (S) o-Terphenyl 540 J7 18.0-148 10/31/2023 13:42 WG2160102 Sample Narrative: L1670618-01 WG2160102: Dilution and surrogate failure due to matrix interference. 1 Cp 2 Tc 3 Ss 4 Cn 5 Sr 6 Qc 7 Gl 8 Al 9 Sc ACCOUNT:PROJECT:SDG:DATE/TIME:PAGE: Arcadis - Chevron - UT 30064298 07.21 L1670618 11/13/23 12:00 6 of 39 ACCOUNT:PROJECT:SDG:DATE/TIME:PAGE: Arcadis - Chevron - UT 30064298 07.21 L1670618 11/13/23 13:02 6 of 39 SAMPLE RESULTS - 01 L1670618 MW-8-S-5-6-231023 Collected date/time: 10/23/23 16:15 Semi-Volatile Organic Compounds (GC) by Method 8015-SGT Result (dry)Qualifier MDL (dry)RDL (dry)Dilution Analysis Batch Analyte mg/kg mg/kg mg/kg date / time C10-C28 Diesel Range 2580 50.7 126 25 10/31/2023 23:08 WG2160105 C28-C40 Oil Range U 8.62 126 25 10/31/2023 23:08 WG2160105 (S) o-Terphenyl 511 J7 18.0-148 10/31/2023 23:08 WG2160105 Sample Narrative: L1670618-01 WG2160105: 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: Arcadis - Chevron - UT 30064298 07.21 L1670618 11/13/23 12:00 7 of 39 ACCOUNT:PROJECT:SDG:DATE/TIME:PAGE: Arcadis - Chevron - UT 30064298 07.21 L1670618 11/13/23 13:02 7 of 39 SAMPLE RESULTS - 02 L1670618 MW-8-S-10-10.75-231023 Collected date/time: 10/23/23 16:50 Total Solids by Method 2540 G-2011 Result Qualifier Dilution Analysis Batch Analyte %date / time Total Solids 84.1 1 10/30/2023 13:39 WG2160435 Wet Chemistry by Method 9071B Result (dry)Qualifier MDL (dry)RDL (dry)Dilution Analysis Batch Analyte mg/kg mg/kg mg/kg date / time Oil & Grease (Hexane Extr)1190 39.2 119 1 11/02/2023 17:07 WG2162049 Wet Chemistry by Method USDA LOI Result Qualifier MDL RDL Dilution Analysis Batch Analyte mg/kg mg/kg mg/kg date / time TOC (Total Organic Carbon)2290 3.33 10.0 1 11/02/2023 15:23 WG2163308 Volatile Organic Compounds (GC) by Method 8015D/GRO Result (dry)Qualifier MDL (dry)RDL (dry)Dilution Analysis Batch Analyte mg/kg mg/kg mg/kg date / time TPH (GC/FID) Low Fraction 33.5 0.770 3.54 25 11/02/2023 05:38 WG2162719 (S) a,a,a-Trifluorotoluene(FID)99.2 77.0-120 11/02/2023 05:38 WG2162719 Volatile Organic Compounds (GC/MS) by Method 8260B Result (dry)Qualifier MDL (dry)RDL (dry)Dilution Analysis Batch Analyte mg/kg mg/kg mg/kg date / time Benzene 0.00145 0.000662 0.00142 1 10/29/2023 12:17 WG2160051 Toluene U 0.00184 0.00709 1 10/29/2023 12:17 WG2160051 Ethylbenzene 0.0117 0.00104 0.00354 1 10/29/2023 12:17 WG2160051 Total Xylenes 0.00598 J 0.00125 0.00922 1 10/29/2023 12:17 WG2160051 Methyl tert-butyl ether U 0.000496 0.00142 1 10/29/2023 12:17 WG2160051 1,2-Dibromoethane U 0.000919 0.00354 1 10/29/2023 12:17 WG2160051 1,2-Dichloroethane U 0.000920 0.00354 1 10/29/2023 12:17 WG2160051 Naphthalene 0.172 0.00692 0.0177 1 10/29/2023 12:17 WG2160051 (S) Toluene-d8 96.7 75.0-131 10/29/2023 12:17 WG2160051 (S) 4-Bromofluorobenzene 132 67.0-138 10/29/2023 12:17 WG2160051 (S) 1,2-Dichloroethane-d4 115 70.0-130 10/29/2023 12:17 WG2160051 Semi-Volatile Organic Compounds (GC) by Method 8015D Result (dry)Qualifier MDL (dry)RDL (dry)Dilution Analysis Batch Analyte mg/kg mg/kg mg/kg date / time C10-C28 Diesel Range 279 1.91 4.76 1 11/02/2023 13:49 WG2160402 C28-C40 Oil Range 5.23 0.326 4.76 1 11/02/2023 13:49 WG2160402 (S) o-Terphenyl 67.9 18.0-148 11/02/2023 13:49 WG2160402 Semi-Volatile Organic Compounds (GC) by Method 8015-SGT Result (dry)Qualifier MDL (dry)RDL (dry)Dilution Analysis Batch Analyte mg/kg mg/kg mg/kg date / time C10-C28 Diesel Range 264 1.91 4.76 1 11/02/2023 17:21 WG2160403 C28-C40 Oil Range 0.761 B J 0.326 4.76 1 11/02/2023 17:21 WG2160403 (S) o-Terphenyl 38.2 18.0-148 11/02/2023 17:21 WG2160403 1 Cp 2 Tc 3 Ss 4 Cn 5 Sr 6 Qc 7 Gl 8 Al 9 Sc ACCOUNT:PROJECT:SDG:DATE/TIME:PAGE: Arcadis - Chevron - UT 30064298 07.21 L1670618 11/13/23 12:00 8 of 39 ACCOUNT:PROJECT:SDG:DATE/TIME:PAGE: Arcadis - Chevron - UT 30064298 07.21 L1670618 11/13/23 13:02 8 of 39 SAMPLE RESULTS - 03 L1670618 MW-8-S-21-21.5-231023 Collected date/time: 10/23/23 17:25 Total Solids by Method 2540 G-2011 Result Qualifier Dilution Analysis Batch Analyte %date / time Total Solids 76.4 1 10/31/2023 10:53 WG2160436 Wet Chemistry by Method 9071B Result (dry)Qualifier MDL (dry)RDL (dry)Dilution Analysis Batch Analyte mg/kg mg/kg mg/kg date / time Oil & Grease (Hexane Extr)78.2 J 43.2 131 1 11/02/2023 17:07 WG2162049 Wet Chemistry by Method USDA LOI Result Qualifier MDL RDL Dilution Analysis Batch Analyte mg/kg mg/kg mg/kg date / time TOC (Total Organic Carbon)5640 3.33 10.0 1 10/31/2023 13:51 WG2161313 Volatile Organic Compounds (GC) by Method 8015D/GRO Result (dry)Qualifier MDL (dry)RDL (dry)Dilution Analysis Batch Analyte mg/kg mg/kg mg/kg date / time TPH (GC/FID) Low Fraction 5.05 B 0.920 4.24 25 11/02/2023 06:07 WG2162719 (S) a,a,a-Trifluorotoluene(FID)102 77.0-120 11/02/2023 06:07 WG2162719 Volatile Organic Compounds (GC/MS) by Method 8260B Result (dry)Qualifier MDL (dry)RDL (dry)Dilution Analysis Batch Analyte mg/kg mg/kg mg/kg date / time Benzene U 0.000791 0.00169 1 10/29/2023 12:36 WG2160051 Toluene U 0.00220 0.00847 1 10/29/2023 12:36 WG2160051 Ethylbenzene U 0.00125 0.00424 1 10/29/2023 12:36 WG2160051 Total Xylenes U 0.00149 0.0110 1 10/29/2023 12:36 WG2160051 Methyl tert-butyl ether U 0.000593 0.00169 1 10/29/2023 12:36 WG2160051 1,2-Dibromoethane U 0.00110 0.00424 1 10/29/2023 12:36 WG2160051 1,2-Dichloroethane U 0.00110 0.00424 1 10/29/2023 12:36 WG2160051 Naphthalene U 0.00827 0.0212 1 10/29/2023 12:36 WG2160051 (S) Toluene-d8 99.2 75.0-131 10/29/2023 12:36 WG2160051 (S) 4-Bromofluorobenzene 94.4 67.0-138 10/29/2023 12:36 WG2160051 (S) 1,2-Dichloroethane-d4 115 70.0-130 10/29/2023 12:36 WG2160051 Semi-Volatile Organic Compounds (GC) by Method 8015D Result (dry)Qualifier MDL (dry)RDL (dry)Dilution Analysis Batch Analyte mg/kg mg/kg mg/kg date / time C10-C28 Diesel Range 4.94 J 2.11 5.24 1 11/02/2023 13:49 WG2160402 C28-C40 Oil Range 7.34 0.359 5.24 1 11/02/2023 13:49 WG2160402 (S) o-Terphenyl 53.5 18.0-148 11/02/2023 13:49 WG2160402 Semi-Volatile Organic Compounds (GC) by Method 8015-SGT Result (dry)Qualifier MDL (dry)RDL (dry)Dilution Analysis Batch Analyte mg/kg mg/kg mg/kg date / time C10-C28 Diesel Range 2.68 J 2.11 5.24 1 11/02/2023 17:33 WG2160403 C28-C40 Oil Range 3.23 B J 0.359 5.24 1 11/02/2023 17:33 WG2160403 (S) o-Terphenyl 59.3 18.0-148 11/02/2023 17:33 WG2160403 1 Cp 2 Tc 3 Ss 4 Cn 5 Sr 6 Qc 7 Gl 8 Al 9 Sc ACCOUNT:PROJECT:SDG:DATE/TIME:PAGE: Arcadis - Chevron - UT 30064298 07.21 L1670618 11/13/23 12:00 9 of 39 ACCOUNT:PROJECT:SDG:DATE/TIME:PAGE: Arcadis - Chevron - UT 30064298 07.21 L1670618 11/13/23 13:02 9 of 39 SAMPLE RESULTS - 04 L1670618 MW-5-S-10-10.75-231024 Collected date/time: 10/24/23 10:30 Total Solids by Method 2540 G-2011 Result Qualifier Dilution Analysis Batch Analyte %date / time Total Solids 82.4 1 10/31/2023 10:53 WG2160436 Wet Chemistry by Method 9071B Result (dry)Qualifier MDL (dry)RDL (dry)Dilution Analysis Batch Analyte mg/kg mg/kg mg/kg date / time Oil & Grease (Hexane Extr)96.7 J 40.0 121 1 11/02/2023 17:07 WG2162049 Wet Chemistry by Method USDA LOI Result Qualifier MDL RDL Dilution Analysis Batch Analyte mg/kg mg/kg mg/kg date / time TOC (Total Organic Carbon)5850 3.33 10.0 1 10/31/2023 13:51 WG2161313 Volatile Organic Compounds (GC) by Method 8015D/GRO Result (dry)Qualifier MDL (dry)RDL (dry)Dilution Analysis Batch Analyte mg/kg mg/kg mg/kg date / time TPH (GC/FID) Low Fraction 1.63 J 0.798 3.67 25 11/02/2023 02:33 WG2162686 (S) a,a,a-Trifluorotoluene(FID)97.1 77.0-120 11/02/2023 02:33 WG2162686 Volatile Organic Compounds (GC/MS) by Method 8260B Result (dry)Qualifier MDL (dry)RDL (dry)Dilution Analysis Batch Analyte mg/kg mg/kg mg/kg date / time Benzene U 0.000686 0.00147 1 10/29/2023 12:56 WG2160051 Toluene U 0.00191 0.00735 1 10/29/2023 12:56 WG2160051 Ethylbenzene U 0.00108 0.00367 1 10/29/2023 12:56 WG2160051 Total Xylenes U 0.00129 0.00955 1 10/29/2023 12:56 WG2160051 Methyl tert-butyl ether U 0.000514 0.00147 1 10/29/2023 12:56 WG2160051 1,2-Dibromoethane U 0.000952 0.00367 1 10/29/2023 12:56 WG2160051 1,2-Dichloroethane U 0.000954 0.00367 1 10/29/2023 12:56 WG2160051 Naphthalene U 0.00717 0.0184 1 10/29/2023 12:56 WG2160051 (S) Toluene-d8 101 75.0-131 10/29/2023 12:56 WG2160051 (S) 4-Bromofluorobenzene 94.6 67.0-138 10/29/2023 12:56 WG2160051 (S) 1,2-Dichloroethane-d4 117 70.0-130 10/29/2023 12:56 WG2160051 Semi-Volatile Organic Compounds (GC) by Method 8015D Result (dry)Qualifier MDL (dry)RDL (dry)Dilution Analysis Batch Analyte mg/kg mg/kg mg/kg date / time C10-C28 Diesel Range 13.1 J3 1.95 4.85 1 11/02/2023 13:12 WG2160402 C28-C40 Oil Range U 0.332 4.85 1 11/02/2023 13:12 WG2160402 (S) o-Terphenyl 37.3 18.0-148 11/02/2023 13:12 WG2160402 Semi-Volatile Organic Compounds (GC) by Method 8015-SGT Result (dry)Qualifier MDL (dry)RDL (dry)Dilution Analysis Batch Analyte mg/kg mg/kg mg/kg date / time C10-C28 Diesel Range 12.4 J3 1.95 4.85 1 11/02/2023 17:33 WG2160403 C28-C40 Oil Range U 0.332 4.85 1 11/02/2023 17:33 WG2160403 (S) o-Terphenyl 39.2 18.0-148 11/02/2023 17:33 WG2160403 1 Cp 2 Tc 3 Ss 4 Cn 5 Sr 6 Qc 7 Gl 8 Al 9 Sc ACCOUNT:PROJECT:SDG:DATE/TIME:PAGE: Arcadis - Chevron - UT 30064298 07.21 L1670618 11/13/23 12:00 10 of 39 ACCOUNT:PROJECT:SDG:DATE/TIME:PAGE: Arcadis - Chevron - UT 30064298 07.21 L1670618 11/13/23 13:02 10 of 39 SAMPLE RESULTS - 05 L1670618 MW-5-S-20-21.5-231024 Collected date/time: 10/24/23 12:00 Total Solids by Method 2540 G-2011 Result Qualifier Dilution Analysis Batch Analyte %date / time Total Solids 78.1 1 10/31/2023 10:53 WG2160436 Wet Chemistry by Method 9071B Result (dry)Qualifier MDL (dry)RDL (dry)Dilution Analysis Batch Analyte mg/kg mg/kg mg/kg date / time Oil & Grease (Hexane Extr)89.2 J 42.3 128 1 11/02/2023 17:07 WG2162049 Wet Chemistry by Method USDA LOI Result Qualifier MDL RDL Dilution Analysis Batch Analyte mg/kg mg/kg mg/kg date / time TOC (Total Organic Carbon)4140 3.33 10.0 1 10/31/2023 13:51 WG2161313 Volatile Organic Compounds (GC) by Method 8015D/GRO Result (dry)Qualifier MDL (dry)RDL (dry)Dilution Analysis Batch Analyte mg/kg mg/kg mg/kg date / time TPH (GC/FID) Low Fraction 3.58 J 0.868 4.00 25 11/02/2023 02:52 WG2162686 (S) a,a,a-Trifluorotoluene(FID)95.2 77.0-120 11/02/2023 02:52 WG2162686 Volatile Organic Compounds (GC/MS) by Method 8260B Result (dry)Qualifier MDL (dry)RDL (dry)Dilution Analysis Batch Analyte mg/kg mg/kg mg/kg date / time Benzene 0.00548 0.000747 0.00160 1 10/29/2023 13:14 WG2160051 Toluene U 0.00208 0.00799 1 10/29/2023 13:14 WG2160051 Ethylbenzene U 0.00118 0.00400 1 10/29/2023 13:14 WG2160051 Total Xylenes U 0.00141 0.0104 1 10/29/2023 13:14 WG2160051 Methyl tert-butyl ether U 0.000560 0.00160 1 10/29/2023 13:14 WG2160051 1,2-Dibromoethane U 0.00104 0.00400 1 10/29/2023 13:14 WG2160051 1,2-Dichloroethane U 0.00104 0.00400 1 10/29/2023 13:14 WG2160051 Naphthalene U 0.00780 0.0200 1 10/29/2023 13:14 WG2160051 (S) Toluene-d8 101 75.0-131 10/29/2023 13:14 WG2160051 (S) 4-Bromofluorobenzene 95.4 67.0-138 10/29/2023 13:14 WG2160051 (S) 1,2-Dichloroethane-d4 119 70.0-130 10/29/2023 13:14 WG2160051 Semi-Volatile Organic Compounds (GC) by Method 8015D Result (dry)Qualifier MDL (dry)RDL (dry)Dilution Analysis Batch Analyte mg/kg mg/kg mg/kg date / time C10-C28 Diesel Range U 2.06 5.12 1 11/02/2023 13:00 WG2160402 C28-C40 Oil Range 4.01 J 0.351 5.12 1 11/02/2023 13:00 WG2160402 (S) o-Terphenyl 52.2 18.0-148 11/02/2023 13:00 WG2160402 Semi-Volatile Organic Compounds (GC) by Method 8015-SGT Result (dry)Qualifier MDL (dry)RDL (dry)Dilution Analysis Batch Analyte mg/kg mg/kg mg/kg date / time C10-C28 Diesel Range U 2.06 5.12 1 11/02/2023 13:00 WG2160403 C28-C40 Oil Range 4.01 J 0.351 5.12 1 11/02/2023 13:00 WG2160403 (S) o-Terphenyl 52.2 18.0-148 11/02/2023 13:00 WG2160403 1 Cp 2 Tc 3 Ss 4 Cn 5 Sr 6 Qc 7 Gl 8 Al 9 Sc ACCOUNT:PROJECT:SDG:DATE/TIME:PAGE: Arcadis - Chevron - UT 30064298 07.21 L1670618 11/13/23 12:00 11 of 39 ACCOUNT:PROJECT:SDG:DATE/TIME:PAGE: Arcadis - Chevron - UT 30064298 07.21 L1670618 11/13/23 13:02 11 of 39 SAMPLE RESULTS - 06 L1670618 BD-4-S-231024 Collected date/time: 10/24/23 00:00 Total Solids by Method 2540 G-2011 Result Qualifier Dilution Analysis Batch Analyte %date / time Total Solids 80.3 1 10/31/2023 10:53 WG2160436 Wet Chemistry by Method 9071B Result (dry)Qualifier MDL (dry)RDL (dry)Dilution Analysis Batch Analyte mg/kg mg/kg mg/kg date / time Oil & Grease (Hexane Extr)135 41.1 124 1 11/02/2023 17:07 WG2162049 Wet Chemistry by Method USDA LOI Result Qualifier MDL RDL Dilution Analysis Batch Analyte mg/kg mg/kg mg/kg date / time TOC (Total Organic Carbon)3870 3.33 10.0 1 10/31/2023 13:51 WG2161313 Volatile Organic Compounds (GC) by Method 8015D/GRO Result (dry)Qualifier MDL (dry)RDL (dry)Dilution Analysis Batch Analyte mg/kg mg/kg mg/kg date / time TPH (GC/FID) Low Fraction 1.99 J 0.817 3.76 25 11/02/2023 03:12 WG2162686 (S) a,a,a-Trifluorotoluene(FID)94.8 77.0-120 11/02/2023 03:12 WG2162686 Volatile Organic Compounds (GC/MS) by Method 8260B Result (dry)Qualifier MDL (dry)RDL (dry)Dilution Analysis Batch Analyte mg/kg mg/kg mg/kg date / time Benzene 0.00357 0.000703 0.00150 1 10/29/2023 13:33 WG2160051 Toluene 0.00236 J 0.00196 0.00752 1 10/29/2023 13:33 WG2160051 Ethylbenzene U 0.00111 0.00376 1 10/29/2023 13:33 WG2160051 Total Xylenes U 0.00132 0.00978 1 10/29/2023 13:33 WG2160051 Methyl tert-butyl ether U 0.000527 0.00150 1 10/29/2023 13:33 WG2160051 1,2-Dibromoethane U 0.000975 0.00376 1 10/29/2023 13:33 WG2160051 1,2-Dichloroethane U 0.000976 0.00376 1 10/29/2023 13:33 WG2160051 Naphthalene U 0.00734 0.0188 1 10/29/2023 13:33 WG2160051 (S) Toluene-d8 100 75.0-131 10/29/2023 13:33 WG2160051 (S) 4-Bromofluorobenzene 94.8 67.0-138 10/29/2023 13:33 WG2160051 (S) 1,2-Dichloroethane-d4 115 70.0-130 10/29/2023 13:33 WG2160051 Semi-Volatile Organic Compounds (GC) by Method 8015D Result (dry)Qualifier MDL (dry)RDL (dry)Dilution Analysis Batch Analyte mg/kg mg/kg mg/kg date / time C10-C28 Diesel Range U 2.00 4.98 1 11/02/2023 13:12 WG2160402 C28-C40 Oil Range 3.31 J 0.341 4.98 1 11/02/2023 13:12 WG2160402 (S) o-Terphenyl 46.9 18.0-148 11/02/2023 13:12 WG2160402 Semi-Volatile Organic Compounds (GC) by Method 8015-SGT Result (dry)Qualifier MDL (dry)RDL (dry)Dilution Analysis Batch Analyte mg/kg mg/kg mg/kg date / time C10-C28 Diesel Range U 2.00 4.98 1 11/02/2023 13:12 WG2160403 C28-C40 Oil Range 3.31 J 0.341 4.98 1 11/02/2023 13:12 WG2160403 (S) o-Terphenyl 46.9 18.0-148 11/02/2023 13:12 WG2160403 1 Cp 2 Tc 3 Ss 4 Cn 5 Sr 6 Qc 7 Gl 8 Al 9 Sc ACCOUNT:PROJECT:SDG:DATE/TIME:PAGE: Arcadis - Chevron - UT 30064298 07.21 L1670618 11/13/23 12:00 12 of 39 ACCOUNT:PROJECT:SDG:DATE/TIME:PAGE: Arcadis - Chevron - UT 30064298 07.21 L1670618 11/13/23 13:02 12 of 39 SAMPLE RESULTS - 07 L1670618 EB-1-231024 Collected date/time: 10/24/23 12:40 Wet Chemistry by Method 1664A Result Qualifier MDL RDL Dilution Analysis Batch Analyte mg/l mg/l mg/l date / time Oil & Grease (Hexane Extr)U 1.40 6.02 1 11/01/2023 17:35 WG2162054 Wet Chemistry by Method 9060A Result Qualifier MDL RDL Dilution Analysis Batch Analyte mg/l mg/l mg/l date / time TOC (Total Organic Carbon)0.218 B J 0.102 1.00 1 11/11/2023 17:02 WG2167709 Volatile Organic Compounds (GC) by Method 8015D/GRO Result Qualifier MDL RDL Dilution Analysis Batch Analyte mg/l mg/l mg/l date / time TPH (GC/FID) Low Fraction U 0.0314 0.100 1 11/03/2023 13:52 WG2163844 (S) a,a,a-Trifluorotoluene(FID)99.0 78.0-120 11/03/2023 13:52 WG2163844 Volatile Organic Compounds (GC/MS) by Method 8260B Result Qualifier MDL RDL Dilution Analysis Batch Analyte mg/l mg/l mg/l date / time Benzene U 0.0000941 0.00100 1 10/31/2023 14:11 WG2161370 Toluene U 0.000278 0.00100 1 10/31/2023 14:11 WG2161370 Ethylbenzene U 0.000137 0.00100 1 10/31/2023 14:11 WG2161370 Total Xylenes U 0.000174 0.00300 1 10/31/2023 14:11 WG2161370 Methyl tert-butyl ether U 0.000101 0.00100 1 10/31/2023 14:11 WG2161370 1,2-Dichloroethane U 0.0000819 0.00100 1 10/31/2023 14:11 WG2161370 1,2-Dibromoethane U 0.000126 0.00100 1 10/31/2023 14:11 WG2161370 Naphthalene U 0.00100 0.00500 1 10/31/2023 14:11 WG2161370 (S) Toluene-d8 105 80.0-120 10/31/2023 14:11 WG2161370 (S) 4-Bromofluorobenzene 96.6 77.0-126 10/31/2023 14:11 WG2161370 (S) 1,2-Dichloroethane-d4 113 70.0-130 10/31/2023 14:11 WG2161370 Semi-Volatile Organic Compounds (GC) by Method 8015D Result Qualifier MDL RDL Dilution Analysis Batch Analyte mg/l mg/l mg/l date / time C10-C28 Diesel Range 0.110 B 0.0222 0.100 1 11/01/2023 01:25 WG2160130 C28-C40 Oil Range 0.148 0.0118 0.100 1 11/01/2023 01:25 WG2160130 (S) o-Terphenyl 123 52.0-156 11/01/2023 01:25 WG2160130 Semi-Volatile Organic Compounds (GC) by Method 8015-SGT Result Qualifier MDL RDL Dilution Analysis Batch Analyte mg/l mg/l mg/l date / time C10-C28 Diesel Range 0.0470 B J 0.0222 0.100 1 11/02/2023 23:11 WG2160131 C28-C40 Oil Range 0.0906 B J 0.0118 0.100 1 11/02/2023 23:11 WG2160131 (S) o-Terphenyl 87.4 52.0-156 11/02/2023 23:11 WG2160131 1 Cp 2 Tc 3 Ss 4 Cn 5 Sr 6 Qc 7 Gl 8 Al 9 Sc ACCOUNT:PROJECT:SDG:DATE/TIME:PAGE: Arcadis - Chevron - UT 30064298 07.21 L1670618 11/13/23 12:00 13 of 39 ACCOUNT:PROJECT:SDG:DATE/TIME:PAGE: Arcadis - Chevron - UT 30064298 07.21 L1670618 11/13/23 13:02 13 of 39 SAMPLE RESULTS - 08 L1670618 EB-2-231024 Collected date/time: 10/24/23 14:25 Wet Chemistry by Method 1664A Result Qualifier MDL RDL Dilution Analysis Batch Analyte mg/l mg/l mg/l date / time Oil & Grease (Hexane Extr)U 1.41 6.10 1 11/01/2023 17:35 WG2162054 Wet Chemistry by Method 9060A Result Qualifier MDL RDL Dilution Analysis Batch Analyte mg/l mg/l mg/l date / time TOC (Total Organic Carbon)0.204 B J P1 0.102 1.00 1 11/11/2023 18:13 WG2167709 Volatile Organic Compounds (GC) by Method 8015D/GRO Result Qualifier MDL RDL Dilution Analysis Batch Analyte mg/l mg/l mg/l date / time TPH (GC/FID) Low Fraction U 0.0314 0.100 1 11/03/2023 14:14 WG2163844 (S) a,a,a-Trifluorotoluene(FID)99.0 78.0-120 11/03/2023 14:14 WG2163844 Volatile Organic Compounds (GC/MS) by Method 8260B Result Qualifier MDL RDL Dilution Analysis Batch Analyte mg/l mg/l mg/l date / time Benzene U 0.0000941 0.00100 1 10/31/2023 14:32 WG2161370 Toluene U 0.000278 0.00100 1 10/31/2023 14:32 WG2161370 Ethylbenzene U 0.000137 0.00100 1 10/31/2023 14:32 WG2161370 Total Xylenes U 0.000174 0.00300 1 10/31/2023 14:32 WG2161370 Methyl tert-butyl ether U 0.000101 0.00100 1 10/31/2023 14:32 WG2161370 1,2-Dichloroethane U 0.0000819 0.00100 1 10/31/2023 14:32 WG2161370 1,2-Dibromoethane U 0.000126 0.00100 1 10/31/2023 14:32 WG2161370 Naphthalene U 0.00100 0.00500 1 10/31/2023 14:32 WG2161370 (S) Toluene-d8 105 80.0-120 10/31/2023 14:32 WG2161370 (S) 4-Bromofluorobenzene 96.9 77.0-126 10/31/2023 14:32 WG2161370 (S) 1,2-Dichloroethane-d4 114 70.0-130 10/31/2023 14:32 WG2161370 Semi-Volatile Organic Compounds (GC) by Method 8015D Result Qualifier MDL RDL Dilution Analysis Batch Analyte mg/l mg/l mg/l date / time C10-C28 Diesel Range 0.0398 B J 0.0222 0.100 1 11/01/2023 00:24 WG2160130 C28-C40 Oil Range 0.0429 J 0.0118 0.100 1 11/01/2023 00:24 WG2160130 (S) o-Terphenyl 127 52.0-156 11/01/2023 00:24 WG2160130 Semi-Volatile Organic Compounds (GC) by Method 8015-SGT Result Qualifier MDL RDL Dilution Analysis Batch Analyte mg/l mg/l mg/l date / time C10-C28 Diesel Range 0.0398 B J 0.0222 0.100 1 11/01/2023 00:24 WG2160131 C28-C40 Oil Range 0.0429 J 0.0118 0.100 1 11/01/2023 00:24 WG2160131 (S) o-Terphenyl 127 52.0-156 11/01/2023 00:24 WG2160131 Sample Narrative: L1670618-08 WG2160131: Reporting from non-silica gel data due to non-detect to the RDL. 1 Cp 2 Tc 3 Ss 4 Cn 5 Sr 6 Qc 7 Gl 8 Al 9 Sc ACCOUNT:PROJECT:SDG:DATE/TIME:PAGE: Arcadis - Chevron - UT 30064298 07.21 L1670618 11/13/23 12:00 14 of 39 ACCOUNT:PROJECT:SDG:DATE/TIME:PAGE: Arcadis - Chevron - UT 30064298 07.21 L1670618 11/13/23 13:02 14 of 39 SAMPLE RESULTS - 09 L1670618 TRIP BLANK-231024 Collected date/time: 10/24/23 15:45 Volatile Organic Compounds (GC/MS) by Method 8260B Result Qualifier MDL RDL Dilution Analysis Batch Analyte mg/l mg/l mg/l date / time Benzene U 0.0000941 0.00100 1 10/31/2023 13:51 WG2161370 Toluene U 0.000278 0.00100 1 10/31/2023 13:51 WG2161370 Ethylbenzene U 0.000137 0.00100 1 10/31/2023 13:51 WG2161370 Total Xylenes U 0.000174 0.00300 1 10/31/2023 13:51 WG2161370 Methyl tert-butyl ether U 0.000101 0.00100 1 10/31/2023 13:51 WG2161370 1,2-Dichloroethane U 0.0000819 0.00100 1 10/31/2023 13:51 WG2161370 1,2-Dibromoethane U 0.000126 0.00100 1 10/31/2023 13:51 WG2161370 Naphthalene U 0.00100 0.00500 1 10/31/2023 13:51 WG2161370 (S) Toluene-d8 107 80.0-120 10/31/2023 13:51 WG2161370 (S) 4-Bromofluorobenzene 101 77.0-126 10/31/2023 13:51 WG2161370 (S) 1,2-Dichloroethane-d4 112 70.0-130 10/31/2023 13:51 WG2161370 1 Cp 2 Tc 3 Ss 4 Cn 5 Sr 6 Qc 7 Gl 8 Al 9 Sc ACCOUNT:PROJECT:SDG:DATE/TIME:PAGE: Arcadis - Chevron - UT 30064298 07.21 L1670618 11/13/23 12:00 15 of 39 ACCOUNT:PROJECT:SDG:DATE/TIME:PAGE: Arcadis - Chevron - UT 30064298 07.21 L1670618 11/13/23 13:02 15 of 39 QUALITY CONTROL SUMMARYWG2160435 Total Solids by Method 2540 G-2011 L1670618-01,02 Method Blank (MB) (MB) R3993092-1 10/30/23 13:39 MB Result MB Qualifier MB MDL MB RDL Analyte %%% Total Solids 0.00300 L1670618-01 Original Sample (OS) • Duplicate (DUP) (OS) L1670618-01 10/30/23 13:39 • (DUP) R3993092-3 10/30/23 13:39 Original Result DUP Result Dilution DUP RPD DUP Qualifier DUP RPD Limits Analyte %%%% Total Solids 79.4 79.9 1 0.637 10 Laboratory Control Sample (LCS) (LCS) R3993092-2 10/30/23 13:39 Spike Amount LCS Result LCS Rec.Rec. Limits LCS Qualifier Analyte %%%% Total Solids 50.0 50.1 100 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: Arcadis - Chevron - UT 30064298 07.21 L1670618 11/13/23 12:00 16 of 39 ACCOUNT:PROJECT:SDG:DATE/TIME:PAGE: Arcadis - Chevron - UT 30064298 07.21 L1670618 11/13/23 13:02 16 of 39 QUALITY CONTROL SUMMARYWG2160436 Total Solids by Method 2540 G-2011 L1670618-03,04,05,06 Method Blank (MB) (MB) R3993658-1 10/31/23 10:53 MB Result MB Qualifier MB MDL MB RDL Analyte %%% Total Solids 0.00100 L1671115-02 Original Sample (OS) • Duplicate (DUP) (OS) L1671115-02 10/31/23 10:53 • (DUP) R3993658-3 10/31/23 10:53 Original Result DUP Result Dilution DUP RPD DUP Qualifier DUP RPD Limits Analyte %%%% Total Solids 80.6 81.3 1 0.881 10 Laboratory Control Sample (LCS) (LCS) R3993658-2 10/31/23 10:53 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: Arcadis - Chevron - UT 30064298 07.21 L1670618 11/13/23 12:00 17 of 39 ACCOUNT:PROJECT:SDG:DATE/TIME:PAGE: Arcadis - Chevron - UT 30064298 07.21 L1670618 11/13/23 13:02 17 of 39 QUALITY CONTROL SUMMARYWG2162054 Wet Chemistry by Method 1664A L1670618-07,08 Method Blank (MB) (MB) R3994186-1 11/01/23 17:35 MB Result MB Qualifier MB MDL MB RDL Analyte mg/l mg/l mg/l Oil & Grease (Hexane Extr)U 1.16 5.00 Laboratory Control Sample (LCS) • Laboratory Control Sample Duplicate (LCSD) (LCS) R3994186-2 11/01/23 17:35 • (LCSD) R3994186-3 11/01/23 17:35 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 %%%%% Oil & Grease (Hexane Extr)40.0 39.0 38.1 97.5 95.3 78.0-114 2.33 20 L1670618-07 Original Sample (OS) • Matrix Spike (MS) (OS) L1670618-07 11/01/23 17:35 • (MS) R3994186-4 11/01/23 17:35 Spike Amount Original Result MS Result MS Rec.Dilution Rec. Limits MS Qualifier Analyte mg/l mg/l mg/l %% Oil & Grease (Hexane Extr)40.0 U 45.7 114 1 78.0-114 1 Cp 2 Tc 3 Ss 4 Cn 5 Sr 6 Qc 7 Gl 8 Al 9 Sc ACCOUNT:PROJECT:SDG:DATE/TIME:PAGE: Arcadis - Chevron - UT 30064298 07.21 L1670618 11/13/23 12:00 18 of 39 ACCOUNT:PROJECT:SDG:DATE/TIME:PAGE: Arcadis - Chevron - UT 30064298 07.21 L1670618 11/13/23 13:02 18 of 39 QUALITY CONTROL SUMMARYWG2167709 Wet Chemistry by Method 9060A L1670618-07,08 Method Blank (MB) (MB) R3998747-2 11/11/23 15:35 MB Result MB Qualifier MB MDL MB RDL Analyte mg/l mg/l mg/l TOC (Total Organic Carbon)0.259 J 0.102 1.00 L1670746-02 Original Sample (OS) • Duplicate (DUP) (OS) L1670746-02 11/12/23 12:07 • (DUP) R3998747-8 11/12/23 12:29 Original Result DUP Result Dilution DUP RPD DUP Qualifier DUP RPD Limits Analyte mg/l mg/l %% TOC (Total Organic Carbon)59.6 59.4 2 0.336 20 L1670618-08 Original Sample (OS) • Duplicate (DUP) (OS) L1670618-08 11/11/23 18:13 • (DUP) R3998747-5 11/11/23 18:31 Original Result DUP Result Dilution DUP RPD DUP Qualifier DUP RPD Limits Analyte mg/l mg/l %% TOC (Total Organic Carbon)0.204 0.253 1 21.3 J P1 20 Laboratory Control Sample (LCS) (LCS) R3998747-1 11/11/23 15:18 Spike Amount LCS Result LCS Rec.Rec. Limits LCS Qualifier Analyte mg/l mg/l %% TOC (Total Organic Carbon)25.0 24.6 98.3 85.0-115 L1670618-07 Original Sample (OS) • Matrix Spike (MS) • Matrix Spike Duplicate (MSD) (OS) L1670618-07 11/11/23 17:02 • (MS) R3998747-3 11/11/23 17:24 • (MSD) R3998747-4 11/11/23 17:46 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 %%%%% TOC (Total Organic Carbon)25.0 0.218 24.4 25.1 96.7 99.4 1 85.0-115 2.75 20 L1670746-05 Original Sample (OS) • Matrix Spike (MS) • Matrix Spike Duplicate (MSD) (OS) L1670746-05 11/11/23 22:18 • (MS) R3998747-6 11/11/23 22:42 • (MSD) R3998747-7 11/11/23 23:07 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 %%%%% TOC (Total Organic Carbon)25.0 10.1 34.4 35.1 97.0 99.8 1 85.0-115 2.05 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: Arcadis - Chevron - UT 30064298 07.21 L1670618 11/13/23 12:00 19 of 39 ACCOUNT:PROJECT:SDG:DATE/TIME:PAGE: Arcadis - Chevron - UT 30064298 07.21 L1670618 11/13/23 13:02 19 of 39 QUALITY CONTROL SUMMARYWG2162049 Wet Chemistry by Method 9071B L1670618-01,02,03,04,05,06 Method Blank (MB) (MB) R3994744-1 11/02/23 17:07 MB Result MB Qualifier MB MDL MB RDL Analyte mg/kg mg/kg mg/kg Oil & Grease (Hexane Extr)U 33.0 100 L1671287-01 Original Sample (OS) • Duplicate (DUP) (OS) L1671287-01 11/02/23 17:07 • (DUP) R3994744-4 11/02/23 17:07 Original Result DUP Result Dilution DUP RPD DUP Qualifier DUP RPD Limits Analyte mg/kg mg/kg %% Oil & Grease (Hexane Extr)79.3 108 1 30.9 P1 20 Laboratory Control Sample (LCS) • Laboratory Control Sample Duplicate (LCSD) (LCS) R3994744-2 11/02/23 17:07 • (LCSD) R3994744-3 11/02/23 17:07 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 %%%%% Oil & Grease (Hexane Extr)4000 3900 3860 97.5 96.5 80.0-120 1.03 20 L1671287-01 Original Sample (OS) • Matrix Spike (MS) • Matrix Spike Duplicate (MSD) (OS) L1671287-01 11/02/23 17:07 • (MS) R3994744-5 11/02/23 17:07 • (MSD) R3994744-6 11/02/23 17:07 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 %%%%% Oil & Grease (Hexane Extr)4000 79.3 3450 3500 84.3 85.6 1 80.0-120 1.45 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: Arcadis - Chevron - UT 30064298 07.21 L1670618 11/13/23 12:00 20 of 39 ACCOUNT:PROJECT:SDG:DATE/TIME:PAGE: Arcadis - Chevron - UT 30064298 07.21 L1670618 11/13/23 13:02 20 of 39 QUALITY CONTROL SUMMARYWG2161077 Wet Chemistry by Method USDA LOI L1670618-01 Method Blank (MB) (MB) R3995659-1 10/31/23 12:03 MB Result MB Qualifier MB MDL MB RDL Analyte mg/kg mg/kg mg/kg TOC (Total Organic Carbon)U 3.33 10.0 L1670495-01 Original Sample (OS) • Duplicate (DUP) (OS) L1670495-01 10/31/23 12:03 • (DUP) R3995659-3 10/31/23 12:03 Original Result DUP Result Dilution DUP RPD DUP Qualifier DUP RPD Limits Analyte mg/kg mg/kg %% TOC (Total Organic Carbon)450 456 1 1.30 20 L1670495-02 Original Sample (OS) • Duplicate (DUP) (OS) L1670495-02 10/31/23 12:03 • (DUP) R3995659-4 10/31/23 12:03 Original Result DUP Result Dilution DUP RPD DUP Qualifier DUP RPD Limits Analyte mg/kg mg/kg %% TOC (Total Organic Carbon)3980 3850 1 3.15 20 Laboratory Control Sample (LCS) (LCS) R3995659-2 10/31/23 12:03 Spike Amount LCS Result LCS Rec.Rec. Limits LCS Qualifier Analyte mg/kg mg/kg %% TOC (Total Organic Carbon)10300 13200 128 9.07-184 1 Cp 2 Tc 3 Ss 4 Cn 5 Sr 6 Qc 7 Gl 8 Al 9 Sc ACCOUNT:PROJECT:SDG:DATE/TIME:PAGE: Arcadis - Chevron - UT 30064298 07.21 L1670618 11/13/23 12:00 21 of 39 ACCOUNT:PROJECT:SDG:DATE/TIME:PAGE: Arcadis - Chevron - UT 30064298 07.21 L1670618 11/13/23 13:02 21 of 39 QUALITY CONTROL SUMMARYWG2161313 Wet Chemistry by Method USDA LOI L1670618-03,04,05,06 Method Blank (MB) (MB) R3994050-1 10/31/23 13:51 MB Result MB Qualifier MB MDL MB RDL Analyte mg/kg mg/kg mg/kg TOC (Total Organic Carbon)U 3.33 10.0 L1671287-01 Original Sample (OS) • Duplicate (DUP) (OS) L1671287-01 10/31/23 13:51 • (DUP) R3994050-3 10/31/23 13:51 Original Result DUP Result Dilution DUP RPD DUP Qualifier DUP RPD Limits Analyte mg/kg mg/kg %% TOC (Total Organic Carbon)6760 6710 1 0.737 20 Laboratory Control Sample (LCS) (LCS) R3994050-2 10/31/23 13:51 Spike Amount LCS Result LCS Rec.Rec. Limits LCS Qualifier Analyte mg/kg mg/kg %% TOC (Total Organic Carbon)10300 11500 111 9.07-184 1 Cp 2 Tc 3 Ss 4 Cn 5 Sr 6 Qc 7 Gl 8 Al 9 Sc ACCOUNT:PROJECT:SDG:DATE/TIME:PAGE: Arcadis - Chevron - UT 30064298 07.21 L1670618 11/13/23 12:00 22 of 39 ACCOUNT:PROJECT:SDG:DATE/TIME:PAGE: Arcadis - Chevron - UT 30064298 07.21 L1670618 11/13/23 13:02 22 of 39 QUALITY CONTROL SUMMARYWG2163308 Wet Chemistry by Method USDA LOI L1670618-02 Method Blank (MB) (MB) R3995726-1 11/02/23 15:23 MB Result MB Qualifier MB MDL MB RDL Analyte mg/kg mg/kg mg/kg TOC (Total Organic Carbon)U 3.33 10.0 L1667315-07 Original Sample (OS) • Duplicate (DUP) (OS) L1667315-07 11/02/23 15:23 • (DUP) R3995726-3 11/02/23 15:23 Original Result DUP Result Dilution DUP RPD DUP Qualifier DUP RPD Limits Analyte mg/kg mg/kg %% TOC (Total Organic Carbon)4530 4640 1 2.36 20 L1667315-08 Original Sample (OS) • Duplicate (DUP) (OS) L1667315-08 11/02/23 15:23 • (DUP) R3995726-4 11/02/23 15:23 Original Result DUP Result Dilution DUP RPD DUP Qualifier DUP RPD Limits Analyte mg/kg mg/kg %% TOC (Total Organic Carbon)4080 4100 1 0.540 20 Laboratory Control Sample (LCS) (LCS) R3995726-2 11/02/23 15:23 Spike Amount LCS Result LCS Rec.Rec. Limits LCS Qualifier Analyte mg/kg mg/kg %% TOC (Total Organic Carbon)10300 17800 173 9.07-184 1 Cp 2 Tc 3 Ss 4 Cn 5 Sr 6 Qc 7 Gl 8 Al 9 Sc ACCOUNT:PROJECT:SDG:DATE/TIME:PAGE: Arcadis - Chevron - UT 30064298 07.21 L1670618 11/13/23 12:00 23 of 39 ACCOUNT:PROJECT:SDG:DATE/TIME:PAGE: Arcadis - Chevron - UT 30064298 07.21 L1670618 11/13/23 13:02 23 of 39 QUALITY CONTROL SUMMARYWG2162686 Volatile Organic Compounds (GC) by Method 8015D/GRO L1670618-01,04,05,06 Method Blank (MB) (MB) R3994590-2 11/01/23 21:33 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)97.2 77.0-120 Laboratory Control Sample (LCS) (LCS) R3994590-1 11/01/23 20:35 Spike Amount LCS Result LCS Rec.Rec. Limits LCS Qualifier Analyte mg/kg mg/kg %% TPH (GC/FID) Low Fraction 5.50 4.84 88.0 72.0-127 (S) a,a,a-Trifluorotoluene(FID) 100 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: Arcadis - Chevron - UT 30064298 07.21 L1670618 11/13/23 12:00 24 of 39 ACCOUNT:PROJECT:SDG:DATE/TIME:PAGE: Arcadis - Chevron - UT 30064298 07.21 L1670618 11/13/23 13:02 24 of 39 QUALITY CONTROL SUMMARYWG2162719 Volatile Organic Compounds (GC) by Method 8015D/GRO L1670618-02,03 Method Blank (MB) (MB) R3994650-3 11/02/23 00:00 MB Result MB Qualifier MB MDL MB RDL Analyte mg/kg mg/kg mg/kg TPH (GC/FID) Low Fraction 0.989 J 0.543 2.50 (S) a,a,a-Trifluorotoluene(FID)101 77.0-120 Laboratory Control Sample (LCS) • Laboratory Control Sample Duplicate (LCSD) (LCS) R3994650-1 11/01/23 22:51 • (LCSD) R3994650-2 11/01/23 23:14 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 5.06 5.11 92.0 92.9 72.0-127 0.983 20 (S) a,a,a-Trifluorotoluene(FID) 99.7 100 77.0-120 L1670617-01 Original Sample (OS) • Matrix Spike (MS) • Matrix Spike Duplicate (MSD) (OS) L1670617-01 11/02/23 01:44 • (MS) R3994650-4 11/02/23 09:36 • (MSD) R3994650-5 11/02/23 10:00 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 %%%%% TPH (GC/FID) Low Fraction 157 0.911 148 151 93.5 95.7 25 10.0-151 2.35 28 (S) a,a,a-Trifluorotoluene(FID) 104 104 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: Arcadis - Chevron - UT 30064298 07.21 L1670618 11/13/23 12:00 25 of 39 ACCOUNT:PROJECT:SDG:DATE/TIME:PAGE: Arcadis - Chevron - UT 30064298 07.21 L1670618 11/13/23 13:02 25 of 39 QUALITY CONTROL SUMMARYWG2163844 Volatile Organic Compounds (GC) by Method 8015D/GRO L1670618-07,08 Method Blank (MB) (MB) R3995615-3 11/03/23 11:21 MB Result MB Qualifier MB MDL MB RDL Analyte mg/l mg/l mg/l TPH (GC/FID) Low Fraction 0.0323 J 0.0314 0.100 (S) a,a,a-Trifluorotoluene(FID)99.6 78.0-120 Laboratory Control Sample (LCS) • Laboratory Control Sample Duplicate (LCSD) (LCS) R3995615-1 11/03/23 10:13 • (LCSD) R3995615-2 11/03/23 10:36 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 %%%%% TPH (GC/FID) Low Fraction 5.50 5.20 5.22 94.5 94.9 72.0-127 0.384 20 (S) a,a,a-Trifluorotoluene(FID) 105 105 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: Arcadis - Chevron - UT 30064298 07.21 L1670618 11/13/23 12:00 26 of 39 ACCOUNT:PROJECT:SDG:DATE/TIME:PAGE: Arcadis - Chevron - UT 30064298 07.21 L1670618 11/13/23 13:02 26 of 39 QUALITY CONTROL SUMMARYWG2160051 Volatile Organic Compounds (GC/MS) by Method 8260B L1670618-01,02,03,04,05,06 Method Blank (MB) (MB) R3992974-2 10/29/23 08:11 MB Result MB Qualifier MB MDL MB RDL Analyte mg/kg mg/kg mg/kg Benzene U 0.000467 0.00100 Toluene U 0.00130 0.00500 Ethylbenzene U 0.000737 0.00250 Total Xylenes U 0.000880 0.00650 Methyl tert-butyl ether U 0.000350 0.00100 1,2-Dibromoethane U 0.000648 0.00250 1,2-Dichloroethane U 0.000649 0.00250 Naphthalene U 0.00488 0.0125 (S) Toluene-d8 102 75.0-131 (S) 4-Bromofluorobenzene 92.6 67.0-138 (S) 1,2-Dichloroethane-d4 124 70.0-130 Laboratory Control Sample (LCS) (LCS) R3992974-1 10/29/23 06:56 Spike Amount LCS Result LCS Rec.Rec. Limits LCS Qualifier Analyte mg/kg mg/kg %% Benzene 0.125 0.115 92.0 70.0-123 Toluene 0.125 0.112 89.6 75.0-121 Ethylbenzene 0.125 0.108 86.4 74.0-126 Total Xylenes 0.375 0.321 85.6 72.0-127 Methyl tert-butyl ether 0.125 0.100 80.0 66.0-132 1,2-Dibromoethane 0.125 0.117 93.6 74.0-128 1,2-Dichloroethane 0.125 0.151 121 65.0-131 Naphthalene 0.125 0.109 87.2 59.0-130 (S) Toluene-d8 98.3 75.0-131 (S) 4-Bromofluorobenzene 93.1 67.0-138 (S) 1,2-Dichloroethane-d4 126 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: Arcadis - Chevron - UT 30064298 07.21 L1670618 11/13/23 12:00 27 of 39 ACCOUNT:PROJECT:SDG:DATE/TIME:PAGE: Arcadis - Chevron - UT 30064298 07.21 L1670618 11/13/23 13:02 27 of 39 QUALITY CONTROL SUMMARYWG2161370 Volatile Organic Compounds (GC/MS) by Method 8260B L1670618-07,08,09 Method Blank (MB) (MB) R3993928-3 10/31/23 12:10 MB Result MB Qualifier MB MDL MB RDL Analyte mg/l mg/l mg/l Benzene U 0.0000941 0.00100 Toluene U 0.000278 0.00100 Ethylbenzene U 0.000137 0.00100 Total Xylenes U 0.000174 0.00300 Methyl tert-butyl ether U 0.000101 0.00100 1,2-Dichloroethane U 0.0000819 0.00100 1,2-Dibromoethane U 0.000126 0.00100 Naphthalene 0.00102 J 0.00100 0.00500 (S) Toluene-d8 104 80.0-120 (S) 4-Bromofluorobenzene 98.1 77.0-126 (S) 1,2-Dichloroethane-d4 111 70.0-130 Laboratory Control Sample (LCS) (LCS) R3993928-1 10/31/23 10:48 Spike Amount LCS Result LCS Rec.Rec. Limits LCS Qualifier Analyte mg/l mg/l %% Benzene 0.00500 0.00559 112 70.0-123 Toluene 0.00500 0.00515 103 79.0-120 Ethylbenzene 0.00500 0.00512 102 79.0-123 Total Xylenes 0.0150 0.0149 99.3 79.0-123 Methyl tert-butyl ether 0.00500 0.00507 101 68.0-125 1,2-Dichloroethane 0.00500 0.00565 113 70.0-128 1,2-Dibromoethane 0.00500 0.00518 104 80.0-122 Naphthalene 0.00500 0.00402 80.4 54.0-135 (S) Toluene-d8 101 80.0-120 (S) 4-Bromofluorobenzene 97.7 77.0-126 (S) 1,2-Dichloroethane-d4 111 70.0-130 L1670622-07 Original Sample (OS) • Matrix Spike (MS) • Matrix Spike Duplicate (MSD) (OS) L1670622-07 10/31/23 19:36 • (MS) R3993928-4 10/31/23 20:17 • (MSD) R3993928-5 10/31/23 20:37 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 %%%%% Benzene 0.0250 0.147 0.186 0.177 156 120 5 17.0-158 4.96 27 Toluene 0.0250 0.00688 0.0352 0.0338 113 108 5 26.0-154 4.06 28 Ethylbenzene 0.0250 0.00438 0.0339 0.0321 118 111 5 30.0-155 5.45 27 Total Xylenes 0.0750 U 0.110 0.105 147 140 5 29.0-154 4.65 28 Methyl tert-butyl ether 0.0250 U 0.0278 0.0279 111 112 5 28.0-150 0.359 29 1 Cp 2 Tc 3 Ss 4 Cn 5 Sr 6 Qc 7 Gl 8 Al 9 Sc ACCOUNT:PROJECT:SDG:DATE/TIME:PAGE: Arcadis - Chevron - UT 30064298 07.21 L1670618 11/13/23 12:00 28 of 39 ACCOUNT:PROJECT:SDG:DATE/TIME:PAGE: Arcadis - Chevron - UT 30064298 07.21 L1670618 11/13/23 13:02 28 of 39 QUALITY CONTROL SUMMARYWG2161370 Volatile Organic Compounds (GC/MS) by Method 8260B L1670618-07,08,09 L1670622-07 Original Sample (OS) • Matrix Spike (MS) • Matrix Spike Duplicate (MSD) (OS) L1670622-07 10/31/23 19:36 • (MS) R3993928-4 10/31/23 20:17 • (MSD) R3993928-5 10/31/23 20:37 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 %%%%% 1,2-Dichloroethane 0.0250 U 0.0306 0.0305 122 122 5 29.0-151 0.327 27 1,2-Dibromoethane 0.0250 U 0.0288 0.0289 115 116 5 34.0-147 0.347 27 Naphthalene 0.0250 U 0.0314 0.0269 126 108 5 12.0-156 15.4 35 (S) Toluene-d8 98.7 98.9 80.0-120 (S) 4-Bromofluorobenzene 95.9 96.3 77.0-126 (S) 1,2-Dichloroethane-d4 110 111 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: Arcadis - Chevron - UT 30064298 07.21 L1670618 11/13/23 12:00 29 of 39 ACCOUNT:PROJECT:SDG:DATE/TIME:PAGE: Arcadis - Chevron - UT 30064298 07.21 L1670618 11/13/23 13:02 29 of 39 QUALITY CONTROL SUMMARYWG2160102 Semi-Volatile Organic Compounds (GC) by Method 8015D L1670618-01 Method Blank (MB) (MB) R3993289-1 10/31/23 10:18 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 66.7 18.0-148 Laboratory Control Sample (LCS) (LCS) R3993289-2 10/31/23 10:31 Spike Amount LCS Result LCS Rec.Rec. Limits LCS Qualifier Analyte mg/kg mg/kg %% C10-C28 Diesel Range 50.0 38.2 76.4 50.0-150 (S) o-Terphenyl 72.1 18.0-148 L1669100-01 Original Sample (OS) • Matrix Spike (MS) • Matrix Spike Duplicate (MSD) (OS) L1669100-01 10/31/23 13:17 • (MS) R3993530-1 10/31/23 13:30 • (MSD) R3993530-2 10/31/23 13:42 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 63.3 2.32 46.0 49.6 68.9 74.7 1 50.0-150 7.68 20 (S) o-Terphenyl 60.5 54.5 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: Arcadis - Chevron - UT 30064298 07.21 L1670618 11/13/23 12:00 30 of 39 ACCOUNT:PROJECT:SDG:DATE/TIME:PAGE: Arcadis - Chevron - UT 30064298 07.21 L1670618 11/13/23 13:02 30 of 39 QUALITY CONTROL SUMMARYWG2160402 Semi-Volatile Organic Compounds (GC) by Method 8015D L1670618-02,03,04,05,06 Method Blank (MB) (MB) R3994625-1 11/02/23 12:48 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 64.3 18.0-148 Laboratory Control Sample (LCS) (LCS) R3994625-2 11/02/23 13:00 Spike Amount LCS Result LCS Rec.Rec. Limits LCS Qualifier Analyte mg/kg mg/kg %% C10-C28 Diesel Range 50.0 36.9 73.8 50.0-150 (S) o-Terphenyl 58.0 18.0-148 L1670618-04 Original Sample (OS) • Matrix Spike (MS) • Matrix Spike Duplicate (MSD) (OS) L1670618-04 11/02/23 13:12 • (MS) R3994625-3 11/02/23 13:24 • (MSD) R3994625-4 11/02/23 13:36 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 58.9 13.1 53.9 69.5 69.1 95.7 1 50.0-150 J3 25.4 20 (S) o-Terphenyl 36.9 43.7 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: Arcadis - Chevron - UT 30064298 07.21 L1670618 11/13/23 12:00 31 of 39 ACCOUNT:PROJECT:SDG:DATE/TIME:PAGE: Arcadis - Chevron - UT 30064298 07.21 L1670618 11/13/23 13:02 31 of 39 QUALITY CONTROL SUMMARYWG2160130 Semi-Volatile Organic Compounds (GC) by Method 8015D L1670618-07,08 Method Blank (MB) (MB) R3993545-1 10/30/23 23:47 MB Result MB Qualifier MB MDL MB RDL Analyte mg/l mg/l mg/l C10-C28 Diesel Range 0.0278 J 0.0222 0.100 C28-C40 Oil Range U 0.0118 0.100 (S) o-Terphenyl 128 52.0-156 Laboratory Control Sample (LCS) • Laboratory Control Sample Duplicate (LCSD) (LCS) R3993545-2 10/31/23 00:07 • (LCSD) R3993545-3 10/31/23 00:27 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 1.64 1.72 109 115 50.0-150 4.76 20 (S) o-Terphenyl 147 151 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: Arcadis - Chevron - UT 30064298 07.21 L1670618 11/13/23 12:00 32 of 39 ACCOUNT:PROJECT:SDG:DATE/TIME:PAGE: Arcadis - Chevron - UT 30064298 07.21 L1670618 11/13/23 13:02 32 of 39 QUALITY CONTROL SUMMARYWG2160105 Semi-Volatile Organic Compounds (GC) by Method 8015-SGT L1670618-01 Method Blank (MB) (MB) R3993640-1 10/31/23 21:01 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 43.4 18.0-148 Laboratory Control Sample (LCS) (LCS) R3993640-2 10/31/23 21:13 Spike Amount LCS Result LCS Rec.Rec. Limits LCS Qualifier Analyte mg/kg mg/kg %% C10-C28 Diesel Range 50.0 34.5 69.0 50.0-150 (S) o-Terphenyl 55.7 18.0-148 L1669100-01 Original Sample (OS) • Matrix Spike (MS) • Matrix Spike Duplicate (MSD) (OS) L1669100-01 10/31/23 21:26 • (MS) R3993640-4 11/01/23 01:28 • (MSD) R3993640-3 10/31/23 21:38 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 63.3 U 42.5 42.3 67.2 66.8 1 50.0-150 0.597 20 (S) o-Terphenyl 54.1 56.9 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: Arcadis - Chevron - UT 30064298 07.21 L1670618 11/13/23 12:00 33 of 39 ACCOUNT:PROJECT:SDG:DATE/TIME:PAGE: Arcadis - Chevron - UT 30064298 07.21 L1670618 11/13/23 13:02 33 of 39 QUALITY CONTROL SUMMARYWG2160403 Semi-Volatile Organic Compounds (GC) by Method 8015-SGT L1670618-02,03,04,05,06 Method Blank (MB) (MB) R3994776-1 11/02/23 17:08 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 0.752 J 0.274 4.00 (S) o-Terphenyl 68.9 18.0-148 Laboratory Control Sample (LCS) (LCS) R3994776-2 11/02/23 17:21 Spike Amount LCS Result LCS Rec.Rec. Limits LCS Qualifier Analyte mg/kg mg/kg %% C10-C28 Diesel Range 50.0 40.0 80.0 50.0-150 (S) o-Terphenyl 51.2 18.0-148 L1670618-04 Original Sample (OS) • Matrix Spike (MS) • Matrix Spike Duplicate (MSD) (OS) L1670618-04 11/02/23 17:33 • (MS) R3994776-3 11/02/23 17:45 • (MSD) R3994776-4 11/02/23 17:58 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 58.9 12.4 56.0 73.5 74.1 104 1 50.0-150 J3 27.0 20 (S) o-Terphenyl 34.0 41.2 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: Arcadis - Chevron - UT 30064298 07.21 L1670618 11/13/23 12:00 34 of 39 ACCOUNT:PROJECT:SDG:DATE/TIME:PAGE: Arcadis - Chevron - UT 30064298 07.21 L1670618 11/13/23 13:02 34 of 39 QUALITY CONTROL SUMMARYWG2160131 Semi-Volatile Organic Compounds (GC) by Method 8015-SGT L1670618-07,08 Method Blank (MB) (MB) R3993546-1 10/31/23 00:48 MB Result MB Qualifier MB MDL MB RDL Analyte mg/l mg/l mg/l C10-C28 Diesel Range 0.0934 J 0.0222 0.100 C28-C40 Oil Range 0.0769 J 0.0118 0.100 (S) o-Terphenyl 82.5 52.0-156 Laboratory Control Sample (LCS) • Laboratory Control Sample Duplicate (LCSD) (LCS) R3993546-2 10/31/23 01:08 • (LCSD) R3993546-3 10/31/23 01:28 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 1.24 1.39 82.7 92.7 50.0-150 11.4 20 (S) o-Terphenyl 108 118 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: Arcadis - Chevron - UT 30064298 07.21 L1670618 11/13/23 12:00 35 of 39 ACCOUNT:PROJECT:SDG:DATE/TIME:PAGE: Arcadis - Chevron - UT 30064298 07.21 L1670618 11/13/23 13:02 35 of 39 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. MDL (dry)Method Detection Limit. 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. J7 Surrogate recovery cannot be used for control limit evaluation due to dilution. P1 RPD value not applicable for sample concentrations less than 5 times the reporting limit. 1 Cp 2 Tc 3 Ss 4 Cn 5 Sr 6 Qc 7 Gl 8 Al 9 Sc ACCOUNT:PROJECT:SDG:DATE/TIME:PAGE: Arcadis - Chevron - UT 30064298 07.21 L1670618 11/13/23 12:00 36 of 39 ACCOUNT:PROJECT:SDG:DATE/TIME:PAGE: Arcadis - Chevron - UT 30064298 07.21 L1670618 11/13/23 13:02 36 of 39 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: Arcadis - Chevron - UT 30064298 07.21 L1670618 11/13/23 12:00 37 of 39 ACCOUNT:PROJECT:SDG:DATE/TIME:PAGE: Arcadis - Chevron - UT 30064298 07.21 L1670618 11/13/23 13:02 37 of 39 ANALYTICAL REPORT November 17, 2023 Arcadis - Chevron - UT Sample Delivery Group:L1672674 Samples Received:11/01/2023 Project Number:30064298 07.21 Description:377352 Site:1917 WEST 1700 SOUTH, SLC Report To:Carissa Mason 10 Exchange Place Suite 112 Salt Lake City, UT 84111 Entire Report Reviewed By: November 17, 2023 [Preliminary Report] Brian Ford 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: Arcadis - Chevron - UT 30064298 07.21 L1672674 11/17/23 17:18 1 of 17 November 18, 2023 Brian Ford Project Manager ACCOUNT:PROJECT:SDG:DATE/TIME:PAGE: Arcadis - Chevron - UT 30064298 07.21 L1672674 11/18/23 10:08 1 of 17 TABLE OF CONTENTS Cp: Cover Page 1 Tc: Table of Contents 2 Ss: Sample Summary 3 Cn: Case Narrative 4 Sr: Sample Results 5 EB-3-231027 L1672674-01 5 MW-11-W-231030 L1672674-02 6 TB-231030 L1672674-03 7 Qc: Quality Control Summary 8 Wet Chemistry by Method 1664A 8 Wet Chemistry by Method 9060A 9 Volatile Organic Compounds (GC) by Method 8015D/GRO 10 Volatile Organic Compounds (GC/MS) by Method 8260B 11 Semi-Volatile Organic Compounds (GC) by Method 8015D 12 Semi-Volatile Organic Compounds (GC) by Method 8015-SGT 13 Gl: Glossary of Terms 15 Al: Accreditations & Locations 16 Sc: Sample Chain of Custody 17 1 Cp 2 Tc 3 Ss 4 Cn 5 Sr 6 Qc 7 Gl 8 Al 9 Sc ACCOUNT:PROJECT:SDG:DATE/TIME:PAGE: Arcadis - Chevron - UT 30064298 07.21 L1672674 11/17/23 17:18 2 of 17 ACCOUNT:PROJECT:SDG:DATE/TIME:PAGE: Arcadis - Chevron - UT 30064298 07.21 L1672674 11/18/23 10:08 2 of 17 SAMPLE SUMMARY Collected by Collected date/time Received date/time EB-3-231027 L1672674-01 GW Bridger Cherry 10/27/23 17:17 11/01/23 08:00 Method Batch Dilution Preparation Analysis Analyst Location date/time date/time Wet Chemistry by Method 1664A WG2164601 1 11/04/23 16:30 11/04/23 23:02 DAL Mt. Juliet, TN Wet Chemistry by Method 9060A WG2171401 1 11/16/23 18:19 11/16/23 18:19 ASH Mt. Juliet, TN Volatile Organic Compounds (GC) by Method 8015D/GRO WG2165744 1 11/07/23 02:33 11/07/23 02:33 DWR Mt. Juliet, TN Volatile Organic Compounds (GC/MS) by Method 8260B WG2164611 1 11/05/23 00:37 11/05/23 00:37 JAH Mt. Juliet, TN Semi-Volatile Organic Compounds (GC) by Method 8015D WG2164389 1 11/06/23 05:38 11/07/23 09:41 TJD Mt. Juliet, TN Semi-Volatile Organic Compounds (GC) by Method 8015-SGT WG2168873 1 11/06/23 05:40 11/07/23 09:41 DMG Mt. Juliet, TN Collected by Collected date/time Received date/time MW-11-W-231030 L1672674-02 GW Bridger Cherry 10/30/23 16:45 11/01/23 08:00 Method Batch Dilution Preparation Analysis Analyst Location date/time date/time Wet Chemistry by Method 1664A WG2164601 1 11/04/23 16:30 11/04/23 23:02 DAL Mt. Juliet, TN Wet Chemistry by Method 9060A WG2171401 1 11/16/23 18:40 11/16/23 18:40 ASH Mt. Juliet, TN Volatile Organic Compounds (GC) by Method 8015D/GRO WG2165744 1 11/07/23 02:52 11/07/23 02:52 DWR Mt. Juliet, TN Volatile Organic Compounds (GC/MS) by Method 8260B WG2164611 1 11/05/23 01:49 11/05/23 01:49 JAH Mt. Juliet, TN Semi-Volatile Organic Compounds (GC) by Method 8015D WG2164389 1 11/06/23 05:38 11/07/23 10:01 TJD Mt. Juliet, TN Semi-Volatile Organic Compounds (GC) by Method 8015-SGT WG2164390 1 11/06/23 05:40 11/07/23 20:23 DMG Mt. Juliet, TN Collected by Collected date/time Received date/time TB-231030 L1672674-03 GW Bridger Cherry 10/30/23 00:00 11/01/23 08:00 Method Batch Dilution Preparation Analysis Analyst Location date/time date/time Volatile Organic Compounds (GC/MS) by Method 8260B WG2164611 1 11/05/23 00:56 11/05/23 00:56 JAH 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: Arcadis - Chevron - UT 30064298 07.21 L1672674 11/17/23 17:18 3 of 17 ACCOUNT:PROJECT:SDG:DATE/TIME:PAGE: Arcadis - Chevron - UT 30064298 07.21 L1672674 11/18/23 10:08 3 of 17 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] Brian Ford 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: Arcadis - Chevron - UT 30064298 07.21 L1672674 11/17/23 17:18 4 of 17 Brian Ford Project Manager ACCOUNT:PROJECT:SDG:DATE/TIME:PAGE: Arcadis - Chevron - UT 30064298 07.21 L1672674 11/18/23 10:08 4 of 17 SAMPLE RESULTS - 01 L1672674 EB-3-231027 Collected date/time: 10/27/23 17:17 Wet Chemistry by Method 1664A Result Qualifier MDL RDL Dilution Analysis Batch Analyte mg/l mg/l mg/l date / time Oil & Grease (Hexane Extr)U 1.33 5.71 1 11/04/2023 23:02 WG2164601 Wet Chemistry by Method 9060A Result Qualifier MDL RDL Dilution Analysis Batch Analyte mg/l mg/l mg/l date / time TOC (Total Organic Carbon)0.313 B J 0.102 1.00 1 11/16/2023 18:19 WG2171401 Volatile Organic Compounds (GC) by Method 8015D/GRO Result Qualifier MDL RDL Dilution Analysis Batch Analyte mg/l mg/l mg/l date / time TPH (GC/FID) Low Fraction U 0.0314 0.100 1 11/07/2023 02:33 WG2165744 (S) a,a,a-Trifluorotoluene(FID)95.4 78.0-120 11/07/2023 02:33 WG2165744 Volatile Organic Compounds (GC/MS) by Method 8260B Result Qualifier MDL RDL Dilution Analysis Batch Analyte mg/l mg/l mg/l date / time Benzene U 0.0000941 0.00100 1 11/05/2023 00:37 WG2164611 Toluene U 0.000278 0.00100 1 11/05/2023 00:37 WG2164611 Ethylbenzene U 0.000137 0.00100 1 11/05/2023 00:37 WG2164611 Total Xylenes U 0.000174 0.00300 1 11/05/2023 00:37 WG2164611 Methyl tert-butyl ether U 0.000101 0.00100 1 11/05/2023 00:37 WG2164611 1,2-Dichloroethane U 0.0000819 0.00100 1 11/05/2023 00:37 WG2164611 1,2-Dibromoethane U 0.000126 0.00100 1 11/05/2023 00:37 WG2164611 Naphthalene U 0.00100 0.00500 1 11/05/2023 00:37 WG2164611 (S) Toluene-d8 108 80.0-120 11/05/2023 00:37 WG2164611 (S) 4-Bromofluorobenzene 98.3 77.0-126 11/05/2023 00:37 WG2164611 (S) 1,2-Dichloroethane-d4 94.3 70.0-130 11/05/2023 00:37 WG2164611 Semi-Volatile Organic Compounds (GC) by Method 8015D Result Qualifier MDL RDL Dilution Analysis Batch Analyte mg/l mg/l mg/l date / time C10-C28 Diesel Range 0.0289 B J 0.0222 0.100 1 11/07/2023 09:41 WG2164389 C28-C40 Oil Range U 0.0118 0.100 1 11/07/2023 09:41 WG2164389 (S) o-Terphenyl 92.1 52.0-156 11/07/2023 09:41 WG2164389 Semi-Volatile Organic Compounds (GC) by Method 8015-SGT Result Qualifier MDL RDL Dilution Analysis Batch Analyte mg/l mg/l mg/l date / time C10-C28 Diesel Range 0.0289 B J 0.0222 0.100 1 11/07/2023 09:41 WG2168873 C28-C40 Oil Range U 0.0118 0.100 1 11/07/2023 09:41 WG2168873 (S) o-Terphenyl 92.1 52.0-156 11/07/2023 09:41 WG2168873 Sample Narrative: L1672674-01 WG2168873: Reporting from non-silica gel data due to non-detect to the RDL. 1 Cp 2 Tc 3 Ss 4 Cn 5 Sr 6 Qc 7 Gl 8 Al 9 Sc ACCOUNT:PROJECT:SDG:DATE/TIME:PAGE: Arcadis - Chevron - UT 30064298 07.21 L1672674 11/17/23 17:18 5 of 17 ACCOUNT:PROJECT:SDG:DATE/TIME:PAGE: Arcadis - Chevron - UT 30064298 07.21 L1672674 11/18/23 10:08 5 of 17 SAMPLE RESULTS - 02 L1672674 MW-11-W-231030 Collected date/time: 10/30/23 16:45 Wet Chemistry by Method 1664A Result Qualifier MDL RDL Dilution Analysis Batch Analyte mg/l mg/l mg/l date / time Oil & Grease (Hexane Extr)U 1.29 5.56 1 11/04/2023 23:02 WG2164601 Wet Chemistry by Method 9060A Result Qualifier MDL RDL Dilution Analysis Batch Analyte mg/l mg/l mg/l date / time TOC (Total Organic Carbon)4.56 0.102 1.00 1 11/16/2023 18:40 WG2171401 Volatile Organic Compounds (GC) by Method 8015D/GRO Result Qualifier MDL RDL Dilution Analysis Batch Analyte mg/l mg/l mg/l date / time TPH (GC/FID) Low Fraction 0.108 0.0314 0.100 1 11/07/2023 02:52 WG2165744 (S) a,a,a-Trifluorotoluene(FID)95.9 78.0-120 11/07/2023 02:52 WG2165744 Volatile Organic Compounds (GC/MS) by Method 8260B Result Qualifier MDL RDL Dilution Analysis Batch Analyte mg/l mg/l mg/l date / time Benzene 0.00118 0.0000941 0.00100 1 11/05/2023 01:49 WG2164611 Toluene U 0.000278 0.00100 1 11/05/2023 01:49 WG2164611 Ethylbenzene U 0.000137 0.00100 1 11/05/2023 01:49 WG2164611 Total Xylenes U 0.000174 0.00300 1 11/05/2023 01:49 WG2164611 Methyl tert-butyl ether U 0.000101 0.00100 1 11/05/2023 01:49 WG2164611 1,2-Dichloroethane U 0.0000819 0.00100 1 11/05/2023 01:49 WG2164611 1,2-Dibromoethane U 0.000126 0.00100 1 11/05/2023 01:49 WG2164611 Naphthalene 0.0136 0.00100 0.00500 1 11/05/2023 01:49 WG2164611 (S) Toluene-d8 103 80.0-120 11/05/2023 01:49 WG2164611 (S) 4-Bromofluorobenzene 98.6 77.0-126 11/05/2023 01:49 WG2164611 (S) 1,2-Dichloroethane-d4 90.9 70.0-130 11/05/2023 01:49 WG2164611 Semi-Volatile Organic Compounds (GC) by Method 8015D Result Qualifier MDL RDL Dilution Analysis Batch Analyte mg/l mg/l mg/l date / time C10-C28 Diesel Range 2.38 0.0222 0.100 1 11/07/2023 10:01 WG2164389 C28-C40 Oil Range 0.257 B 0.0118 0.100 1 11/07/2023 10:01 WG2164389 (S) o-Terphenyl 112 52.0-156 11/07/2023 10:01 WG2164389 Semi-Volatile Organic Compounds (GC) by Method 8015-SGT Result Qualifier MDL RDL Dilution Analysis Batch Analyte mg/l mg/l mg/l date / time C10-C28 Diesel Range 1.51 0.0222 0.100 1 11/07/2023 20:23 WG2164390 C28-C40 Oil Range U 0.0118 0.100 1 11/07/2023 20:23 WG2164390 (S) o-Terphenyl 100 52.0-156 11/07/2023 20:23 WG2164390 Sample Narrative: L1672674-02 WG2164390: Sample resembles laboratory standard for Diesel. 1 Cp 2 Tc 3 Ss 4 Cn 5 Sr 6 Qc 7 Gl 8 Al 9 Sc ACCOUNT:PROJECT:SDG:DATE/TIME:PAGE: Arcadis - Chevron - UT 30064298 07.21 L1672674 11/17/23 17:18 6 of 17 ACCOUNT:PROJECT:SDG:DATE/TIME:PAGE: Arcadis - Chevron - UT 30064298 07.21 L1672674 11/18/23 10:08 6 of 17 SAMPLE RESULTS - 03 L1672674 TB-231030 Collected date/time: 10/30/23 00:00 Volatile Organic Compounds (GC/MS) by Method 8260B Result Qualifier MDL RDL Dilution Analysis Batch Analyte mg/l mg/l mg/l date / time Benzene U 0.0000941 0.00100 1 11/05/2023 00:56 WG2164611 Toluene U 0.000278 0.00100 1 11/05/2023 00:56 WG2164611 Ethylbenzene U 0.000137 0.00100 1 11/05/2023 00:56 WG2164611 Total Xylenes U 0.000174 0.00300 1 11/05/2023 00:56 WG2164611 Methyl tert-butyl ether U 0.000101 0.00100 1 11/05/2023 00:56 WG2164611 1,2-Dichloroethane U 0.0000819 0.00100 1 11/05/2023 00:56 WG2164611 1,2-Dibromoethane U 0.000126 0.00100 1 11/05/2023 00:56 WG2164611 Naphthalene U 0.00100 0.00500 1 11/05/2023 00:56 WG2164611 (S) Toluene-d8 105 80.0-120 11/05/2023 00:56 WG2164611 (S) 4-Bromofluorobenzene 98.2 77.0-126 11/05/2023 00:56 WG2164611 (S) 1,2-Dichloroethane-d4 94.9 70.0-130 11/05/2023 00:56 WG2164611 1 Cp 2 Tc 3 Ss 4 Cn 5 Sr 6 Qc 7 Gl 8 Al 9 Sc ACCOUNT:PROJECT:SDG:DATE/TIME:PAGE: Arcadis - Chevron - UT 30064298 07.21 L1672674 11/17/23 17:18 7 of 17 ACCOUNT:PROJECT:SDG:DATE/TIME:PAGE: Arcadis - Chevron - UT 30064298 07.21 L1672674 11/18/23 10:08 7 of 17 QUALITY CONTROL SUMMARYWG2164601 Wet Chemistry by Method 1664A L1672674-01,02 Method Blank (MB) (MB) R3995521-1 11/04/23 23:02 MB Result MB Qualifier MB MDL MB RDL Analyte mg/l mg/l mg/l Oil & Grease (Hexane Extr)U 1.16 5.00 Laboratory Control Sample (LCS) • Laboratory Control Sample Duplicate (LCSD) (LCS) R3995521-2 11/04/23 23:02 • (LCSD) R3995521-3 11/04/23 23:02 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 %%%%% Oil & Grease (Hexane Extr)40.0 34.2 36.7 85.5 91.8 78.0-114 7.05 20 L1672674-01 Original Sample (OS) • Matrix Spike (MS) (OS) L1672674-01 11/04/23 23:02 • (MS) R3995521-4 11/04/23 23:02 Spike Amount Original Result MS Result MS Rec.Dilution Rec. Limits MS Qualifier Analyte mg/l mg/l mg/l %% Oil & Grease (Hexane Extr)40.0 U 41.5 104 1 78.0-114 1 Cp 2 Tc 3 Ss 4 Cn 5 Sr 6 Qc 7 Gl 8 Al 9 Sc ACCOUNT:PROJECT:SDG:DATE/TIME:PAGE: Arcadis - Chevron - UT 30064298 07.21 L1672674 11/17/23 17:18 8 of 17 ACCOUNT:PROJECT:SDG:DATE/TIME:PAGE: Arcadis - Chevron - UT 30064298 07.21 L1672674 11/18/23 10:08 8 of 17 QUALITY CONTROL SUMMARYWG2171401 Wet Chemistry by Method 9060A L1672674-01,02 Method Blank (MB) (MB) R4001183-2 11/16/23 18:01 MB Result MB Qualifier MB MDL MB RDL Analyte mg/l mg/l mg/l TOC (Total Organic Carbon)0.221 J 0.102 1.00 L1672681-06 Original Sample (OS) • Duplicate (DUP) (OS) L1672681-06 11/16/23 18:56 • (DUP) R4001183-3 11/16/23 19:14 Original Result DUP Result Dilution DUP RPD DUP Qualifier DUP RPD Limits Analyte mg/l mg/l %% TOC (Total Organic Carbon)1.25 1.29 1 3.54 20 L1672900-03 Original Sample (OS) • Duplicate (DUP) (OS) L1672900-03 11/16/23 23:04 • (DUP) R4001183-6 11/16/23 23:24 Original Result DUP Result Dilution DUP RPD DUP Qualifier DUP RPD Limits Analyte mg/l mg/l %% TOC (Total Organic Carbon)5.09 5.10 1 0.137 20 Laboratory Control Sample (LCS) (LCS) R4001183-1 11/16/23 17:45 Spike Amount LCS Result LCS Rec.Rec. Limits LCS Qualifier Analyte mg/l mg/l %% TOC (Total Organic Carbon)25.0 24.4 97.6 85.0-115 L1672802-02 Original Sample (OS) • Matrix Spike (MS) • Matrix Spike Duplicate (MSD) (OS) L1672802-02 11/16/23 20:05 • (MS) R4001183-4 11/16/23 20:28 • (MSD) R4001183-5 11/16/23 20:52 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 %%%%% TOC (Total Organic Carbon)25.0 0.443 23.3 23.8 91.5 93.3 1 85.0-115 1.83 20 L1672900-08 Original Sample (OS) • Matrix Spike (MS) • Matrix Spike Duplicate (MSD) (OS) L1672900-08 11/17/23 00:28 • (MS) R4001183-7 11/17/23 00:55 • (MSD) R4001183-8 11/17/23 01:23 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 %%%%% TOC (Total Organic Carbon)25.0 23.9 47.8 47.7 95.6 95.4 1 85.0-115 0.126 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: Arcadis - Chevron - UT 30064298 07.21 L1672674 11/17/23 17:18 9 of 17 ACCOUNT:PROJECT:SDG:DATE/TIME:PAGE: Arcadis - Chevron - UT 30064298 07.21 L1672674 11/18/23 10:08 9 of 17 QUALITY CONTROL SUMMARYWG2165744 Volatile Organic Compounds (GC) by Method 8015D/GRO L1672674-01,02 Method Blank (MB) (MB) R3996968-2 11/07/23 01:40 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)96.4 78.0-120 Laboratory Control Sample (LCS) (LCS) R3996968-1 11/07/23 01:02 Spike Amount LCS Result LCS Rec.Rec. Limits LCS Qualifier Analyte mg/l mg/l %% TPH (GC/FID) Low Fraction 5.50 5.10 92.7 72.0-127 (S) a,a,a-Trifluorotoluene(FID) 104 78.0-120 L1673233-01 Original Sample (OS) • Matrix Spike (MS) • Matrix Spike Duplicate (MSD) (OS) L1673233-01 11/07/23 09:06 • (MS) R3996968-3 11/07/23 11:40 • (MSD) R3996968-4 11/07/23 12:00 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 %%%%% TPH (GC/FID) Low Fraction 5.50 U 5.12 5.00 93.1 90.9 1 10.0-160 2.37 22 (S) a,a,a-Trifluorotoluene(FID) 104 103 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: Arcadis - Chevron - UT 30064298 07.21 L1672674 11/17/23 17:18 10 of 17 ACCOUNT:PROJECT:SDG:DATE/TIME:PAGE: Arcadis - Chevron - UT 30064298 07.21 L1672674 11/18/23 10:08 10 of 17 QUALITY CONTROL SUMMARYWG2164611 Volatile Organic Compounds (GC/MS) by Method 8260B L1672674-01,02,03 Method Blank (MB) (MB) R3997070-3 11/05/23 00:18 MB Result MB Qualifier MB MDL MB RDL Analyte mg/l mg/l mg/l Benzene U 0.0000941 0.00100 Toluene U 0.000278 0.00100 Ethylbenzene U 0.000137 0.00100 Total Xylenes U 0.000174 0.00300 Methyl tert-butyl ether U 0.000101 0.00100 1,2-Dichloroethane U 0.0000819 0.00100 1,2-Dibromoethane U 0.000126 0.00100 Naphthalene U 0.00100 0.00500 (S) Toluene-d8 105 80.0-120 (S) 4-Bromofluorobenzene 96.8 77.0-126 (S) 1,2-Dichloroethane-d4 93.0 70.0-130 Laboratory Control Sample (LCS) • Laboratory Control Sample Duplicate (LCSD) (LCS) R3997070-1 11/04/23 23:21 • (LCSD) R3997070-2 11/04/23 23:40 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 %%%%% Benzene 0.00500 0.00533 0.00552 107 110 70.0-123 3.50 20 Toluene 0.00500 0.00527 0.00529 105 106 79.0-120 0.379 20 Ethylbenzene 0.00500 0.00538 0.00548 108 110 79.0-123 1.84 20 Total Xylenes 0.0150 0.0157 0.0162 105 108 79.0-123 3.13 20 Methyl tert-butyl ether 0.00500 0.00499 0.00533 99.8 107 68.0-125 6.59 20 1,2-Dichloroethane 0.00500 0.00485 0.00499 97.0 99.8 70.0-128 2.85 20 1,2-Dibromoethane 0.00500 0.00539 0.00548 108 110 80.0-122 1.66 20 Naphthalene 0.00500 0.00504 0.00564 101 113 54.0-135 11.2 20 (S) Toluene-d8 102 101 80.0-120 (S) 4-Bromofluorobenzene 97.2 99.9 77.0-126 (S) 1,2-Dichloroethane-d4 98.1 98.5 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: Arcadis - Chevron - UT 30064298 07.21 L1672674 11/17/23 17:18 11 of 17 ACCOUNT:PROJECT:SDG:DATE/TIME:PAGE: Arcadis - Chevron - UT 30064298 07.21 L1672674 11/18/23 10:08 11 of 17 QUALITY CONTROL SUMMARYWG2164389 Semi-Volatile Organic Compounds (GC) by Method 8015D L1672674-01,02 Method Blank (MB) (MB) R3996809-1 11/07/23 08:20 MB Result MB Qualifier MB MDL MB RDL Analyte mg/l mg/l mg/l C10-C28 Diesel Range 0.0419 J 0.0222 0.100 C28-C40 Oil Range 0.0380 J 0.0118 0.100 (S) o-Terphenyl 111 52.0-156 Laboratory Control Sample (LCS) • Laboratory Control Sample Duplicate (LCSD) (LCS) R3996809-2 11/07/23 08:40 • (LCSD) R3996809-3 11/07/23 09:01 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 1.52 1.52 101 101 50.0-150 0.000 20 (S) o-Terphenyl 106 102 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: Arcadis - Chevron - UT 30064298 07.21 L1672674 11/17/23 17:18 12 of 17 ACCOUNT:PROJECT:SDG:DATE/TIME:PAGE: Arcadis - Chevron - UT 30064298 07.21 L1672674 11/18/23 10:08 12 of 17 QUALITY CONTROL SUMMARYWG2164390 Semi-Volatile Organic Compounds (GC) by Method 8015-SGT L1672674-02 Method Blank (MB) (MB) R3997689-1 11/07/23 18:42 MB Result MB Qualifier MB MDL MB RDL Analyte mg/l mg/l mg/l C10-C28 Diesel Range 0.0512 J 0.0222 0.100 C28-C40 Oil Range 0.0666 J 0.0118 0.100 (S) o-Terphenyl 98.0 52.0-156 Laboratory Control Sample (LCS) • Laboratory Control Sample Duplicate (LCSD) (LCS) R3997689-2 11/07/23 19:02 • (LCSD) R3997689-3 11/07/23 19:22 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 1.52 1.50 101 100 50.0-150 1.32 20 (S) o-Terphenyl 100 93.0 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: Arcadis - Chevron - UT 30064298 07.21 L1672674 11/17/23 17:18 13 of 17 ACCOUNT:PROJECT:SDG:DATE/TIME:PAGE: Arcadis - Chevron - UT 30064298 07.21 L1672674 11/18/23 10:08 13 of 17 QUALITY CONTROL SUMMARYWG2168873 Semi-Volatile Organic Compounds (GC) by Method 8015-SGT L1672674-01 Method Blank (MB) (MB) R3998265-1 11/07/23 18:42 MB Result MB Qualifier MB MDL MB RDL Analyte mg/l mg/l mg/l C10-C28 Diesel Range 0.0512 J 0.0222 0.100 C28-C40 Oil Range 0.0666 J 0.0118 0.100 (S) o-Terphenyl 98.0 52.0-156 Laboratory Control Sample (LCS) • Laboratory Control Sample Duplicate (LCSD) (LCS) R3998265-2 11/07/23 19:02 • (LCSD) R3998265-3 11/07/23 19:22 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 1.52 1.50 101 100 50.0-150 1.32 20 (S) o-Terphenyl 100 93.0 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: Arcadis - Chevron - UT 30064298 07.21 L1672674 11/17/23 17:18 14 of 17 ACCOUNT:PROJECT:SDG:DATE/TIME:PAGE: Arcadis - Chevron - UT 30064298 07.21 L1672674 11/18/23 10:08 14 of 17 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. 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. J The identification of the analyte is acceptable; the reported value is an estimate. 1 Cp 2 Tc 3 Ss 4 Cn 5 Sr 6 Qc 7 Gl 8 Al 9 Sc ACCOUNT:PROJECT:SDG:DATE/TIME:PAGE: Arcadis - Chevron - UT 30064298 07.21 L1672674 11/17/23 17:18 15 of 17 ACCOUNT:PROJECT:SDG:DATE/TIME:PAGE: Arcadis - Chevron - UT 30064298 07.21 L1672674 11/18/23 10:08 15 of 17 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: Arcadis - Chevron - UT 30064298 07.21 L1672674 11/17/23 17:18 16 of 17 ACCOUNT:PROJECT:SDG:DATE/TIME:PAGE: Arcadis - Chevron - UT 30064298 07.21 L1672674 11/18/23 10:08 16 of 17 ANALYTICAL REPORT November 17, 2023 Arcadis - Chevron - UT Sample Delivery Group:L1672957 Samples Received:11/02/2023 Project Number:30064298 07.21 Description:377352 Site:1917 WEST 1700 SOUTH, SLC Report To:Carissa Mason 10 Exchange Place Suite 112 Salt Lake City, UT 84111 Entire Report Reviewed By: November 17, 2023 [Preliminary Report] Brian Ford 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: Arcadis - Chevron - UT 30064298 07.21 L1672957 11/17/23 17:18 1 of 18 November 18, 2023 Brian Ford Project Manager ACCOUNT:PROJECT:SDG:DATE/TIME:PAGE: Arcadis - Chevron - UT 30064298 07.21 L1672957 11/18/23 10:09 1 of 18 TABLE OF CONTENTS Cp: Cover Page 1 Tc: Table of Contents 2 Ss: Sample Summary 3 Cn: Case Narrative 4 Sr: Sample Results 5 MW-10-W-231031 L1672957-01 5 MW-1-W-231031 L1672957-02 6 MW-2-W-231031 L1672957-03 7 TRIP BLANK-231031 L1672957-04 8 Qc: Quality Control Summary 9 Wet Chemistry by Method 1664A 9 Wet Chemistry by Method 9060A 10 Volatile Organic Compounds (GC) by Method 8015D/GRO 11 Volatile Organic Compounds (GC/MS) by Method 8260B 12 Semi-Volatile Organic Compounds (GC) by Method 8015D 13 Semi-Volatile Organic Compounds (GC) by Method 8015-SGT 14 Gl: Glossary of Terms 15 Al: Accreditations & Locations 16 Sc: Sample Chain of Custody 17 1 Cp 2 Tc 3 Ss 4 Cn 5 Sr 6 Qc 7 Gl 8 Al 9 Sc ACCOUNT:PROJECT:SDG:DATE/TIME:PAGE: Arcadis - Chevron - UT 30064298 07.21 L1672957 11/17/23 17:18 2 of 18 ACCOUNT:PROJECT:SDG:DATE/TIME:PAGE: Arcadis - Chevron - UT 30064298 07.21 L1672957 11/18/23 10:09 2 of 18 SAMPLE SUMMARY Collected by Collected date/time Received date/time MW-10-W-231031 L1672957-01 GW Bridger Cherry 10/31/23 13:25 11/02/23 09:00 Method Batch Dilution Preparation Analysis Analyst Location date/time date/time Wet Chemistry by Method 1664A WG2165008 1 11/06/23 09:34 11/07/23 09:28 WAW Mt. Juliet, TN Wet Chemistry by Method 9060A WG2171405 1 11/15/23 22:16 11/15/23 22:16 AW Mt. Juliet, TN Volatile Organic Compounds (GC) by Method 8015D/GRO WG2165904 1 11/07/23 11:38 11/07/23 11:38 ACG Mt. Juliet, TN Volatile Organic Compounds (GC/MS) by Method 8260B WG2165059 1 11/06/23 02:27 11/06/23 02:27 ACG Mt. Juliet, TN Semi-Volatile Organic Compounds (GC) by Method 8015D WG2164389 1 11/06/23 05:38 11/07/23 10:21 TJD Mt. Juliet, TN Semi-Volatile Organic Compounds (GC) by Method 8015-SGT WG2164390 1 11/06/23 05:40 11/07/23 20:43 DMG Mt. Juliet, TN Collected by Collected date/time Received date/time MW-1-W-231031 L1672957-02 GW Bridger Cherry 10/31/23 16:00 11/02/23 09:00 Method Batch Dilution Preparation Analysis Analyst Location date/time date/time Wet Chemistry by Method 1664A WG2165008 1 11/06/23 09:34 11/07/23 09:28 WAW Mt. Juliet, TN Wet Chemistry by Method 9060A WG2171405 1 11/15/23 23:12 11/15/23 23:12 AW Mt. Juliet, TN Volatile Organic Compounds (GC) by Method 8015D/GRO WG2165904 1 11/07/23 12:01 11/07/23 12:01 ACG Mt. Juliet, TN Volatile Organic Compounds (GC/MS) by Method 8260B WG2165059 1 11/06/23 02:48 11/06/23 02:48 ACG Mt. Juliet, TN Semi-Volatile Organic Compounds (GC) by Method 8015D WG2164389 1 11/06/23 05:38 11/07/23 10:41 TJD Mt. Juliet, TN Semi-Volatile Organic Compounds (GC) by Method 8015-SGT WG2164390 1 11/06/23 05:40 11/07/23 21:03 DMG Mt. Juliet, TN Collected by Collected date/time Received date/time MW-2-W-231031 L1672957-03 GW Bridger Cherry 10/31/23 00:00 11/02/23 09:00 Method Batch Dilution Preparation Analysis Analyst Location date/time date/time Wet Chemistry by Method 1664A WG2165008 1 11/06/23 09:34 11/07/23 09:28 WAW Mt. Juliet, TN Wet Chemistry by Method 9060A WG2171405 1 11/15/23 23:41 11/15/23 23:41 AW Mt. Juliet, TN Volatile Organic Compounds (GC) by Method 8015D/GRO WG2165904 1 11/07/23 12:23 11/07/23 12:23 ACG Mt. Juliet, TN Volatile Organic Compounds (GC/MS) by Method 8260B WG2165059 1 11/06/23 03:08 11/06/23 03:08 ACG Mt. Juliet, TN Semi-Volatile Organic Compounds (GC) by Method 8015D WG2164389 1 11/06/23 05:38 11/07/23 11:01 TJD Mt. Juliet, TN Semi-Volatile Organic Compounds (GC) by Method 8015-SGT WG2164390 1 11/06/23 05:40 11/07/23 21:40 DMG Mt. Juliet, TN Collected by Collected date/time Received date/time TRIP BLANK-231031 L1672957-04 GW Bridger Cherry 10/31/23 00:00 11/02/23 09:00 Method Batch Dilution Preparation Analysis Analyst Location date/time date/time Volatile Organic Compounds (GC/MS) by Method 8260B WG2165059 1 11/06/23 02:06 11/06/23 02:06 ACG 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: Arcadis - Chevron - UT 30064298 07.21 L1672957 11/17/23 17:18 3 of 18 ACCOUNT:PROJECT:SDG:DATE/TIME:PAGE: Arcadis - Chevron - UT 30064298 07.21 L1672957 11/18/23 10:09 3 of 18 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] Brian Ford 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: Arcadis - Chevron - UT 30064298 07.21 L1672957 11/17/23 17:18 4 of 18 Brian Ford Project Manager ACCOUNT:PROJECT:SDG:DATE/TIME:PAGE: Arcadis - Chevron - UT 30064298 07.21 L1672957 11/18/23 10:09 4 of 18 SAMPLE RESULTS - 01 L1672957 MW-10-W-231031 Collected date/time: 10/31/23 13:25 Wet Chemistry by Method 1664A Result Qualifier MDL RDL Dilution Analysis Batch Analyte mg/l mg/l mg/l date / time Oil & Grease (Hexane Extr)1.95 J 1.41 6.10 1 11/07/2023 09:28 WG2165008 Wet Chemistry by Method 9060A Result Qualifier MDL RDL Dilution Analysis Batch Analyte mg/l mg/l mg/l date / time TOC (Total Organic Carbon)5.53 J6 0.102 1.00 1 11/15/2023 22:16 WG2171405 Volatile Organic Compounds (GC) by Method 8015D/GRO Result Qualifier MDL RDL Dilution Analysis Batch Analyte mg/l mg/l mg/l date / time TPH (GC/FID) Low Fraction 0.140 0.0314 0.100 1 11/07/2023 11:38 WG2165904 (S) a,a,a-Trifluorotoluene(FID)98.1 78.0-120 11/07/2023 11:38 WG2165904 Volatile Organic Compounds (GC/MS) by Method 8260B Result Qualifier MDL RDL Dilution Analysis Batch Analyte mg/l mg/l mg/l date / time Benzene 0.000543 J 0.0000941 0.00100 1 11/06/2023 02:27 WG2165059 Toluene U 0.000278 0.00100 1 11/06/2023 02:27 WG2165059 Ethylbenzene 0.000717 J 0.000137 0.00100 1 11/06/2023 02:27 WG2165059 Total Xylenes 0.000927 J 0.000174 0.00300 1 11/06/2023 02:27 WG2165059 Methyl tert-butyl ether U 0.000101 0.00100 1 11/06/2023 02:27 WG2165059 1,2-Dichloroethane U 0.0000819 0.00100 1 11/06/2023 02:27 WG2165059 1,2-Dibromoethane U 0.000126 0.00100 1 11/06/2023 02:27 WG2165059 Naphthalene 0.0580 0.00100 0.00500 1 11/06/2023 02:27 WG2165059 (S) Toluene-d8 95.7 80.0-120 11/06/2023 02:27 WG2165059 (S) 4-Bromofluorobenzene 98.2 77.0-126 11/06/2023 02:27 WG2165059 (S) 1,2-Dichloroethane-d4 105 70.0-130 11/06/2023 02:27 WG2165059 Semi-Volatile Organic Compounds (GC) by Method 8015D Result Qualifier MDL RDL Dilution Analysis Batch Analyte mg/l mg/l mg/l date / time C10-C28 Diesel Range 5.25 0.0222 0.100 1 11/07/2023 10:21 WG2164389 C28-C40 Oil Range 0.0841 B J 0.0118 0.100 1 11/07/2023 10:21 WG2164389 (S) o-Terphenyl 124 52.0-156 11/07/2023 10:21 WG2164389 Semi-Volatile Organic Compounds (GC) by Method 8015-SGT Result Qualifier MDL RDL Dilution Analysis Batch Analyte mg/l mg/l mg/l date / time C10-C28 Diesel Range 4.99 0.0222 0.100 1 11/07/2023 20:43 WG2164390 C28-C40 Oil Range 0.0325 B J 0.0118 0.100 1 11/07/2023 20:43 WG2164390 (S) o-Terphenyl 95.3 52.0-156 11/07/2023 20:43 WG2164390 Sample Narrative: L1672957-01 WG2164390: Sample resembles laboratory standard for Diesel. 1 Cp 2 Tc 3 Ss 4 Cn 5 Sr 6 Qc 7 Gl 8 Al 9 Sc ACCOUNT:PROJECT:SDG:DATE/TIME:PAGE: Arcadis - Chevron - UT 30064298 07.21 L1672957 11/17/23 17:18 5 of 18 ACCOUNT:PROJECT:SDG:DATE/TIME:PAGE: Arcadis - Chevron - UT 30064298 07.21 L1672957 11/18/23 10:09 5 of 18 SAMPLE RESULTS - 02 L1672957 MW-1-W-231031 Collected date/time: 10/31/23 16:00 Wet Chemistry by Method 1664A Result Qualifier MDL RDL Dilution Analysis Batch Analyte mg/l mg/l mg/l date / time Oil & Grease (Hexane Extr)5.24 J 1.41 6.10 1 11/07/2023 09:28 WG2165008 Wet Chemistry by Method 9060A Result Qualifier MDL RDL Dilution Analysis Batch Analyte mg/l mg/l mg/l date / time TOC (Total Organic Carbon)4.90 0.102 1.00 1 11/15/2023 23:12 WG2171405 Volatile Organic Compounds (GC) by Method 8015D/GRO Result Qualifier MDL RDL Dilution Analysis Batch Analyte mg/l mg/l mg/l date / time TPH (GC/FID) Low Fraction 0.283 0.0314 0.100 1 11/07/2023 12:01 WG2165904 (S) a,a,a-Trifluorotoluene(FID)100 78.0-120 11/07/2023 12:01 WG2165904 Volatile Organic Compounds (GC/MS) by Method 8260B Result Qualifier MDL RDL Dilution Analysis Batch Analyte mg/l mg/l mg/l date / time Benzene 0.00456 0.0000941 0.00100 1 11/06/2023 02:48 WG2165059 Toluene U 0.000278 0.00100 1 11/06/2023 02:48 WG2165059 Ethylbenzene 0.000499 J 0.000137 0.00100 1 11/06/2023 02:48 WG2165059 Total Xylenes 0.000323 J 0.000174 0.00300 1 11/06/2023 02:48 WG2165059 Methyl tert-butyl ether U 0.000101 0.00100 1 11/06/2023 02:48 WG2165059 1,2-Dichloroethane U 0.0000819 0.00100 1 11/06/2023 02:48 WG2165059 1,2-Dibromoethane U 0.000126 0.00100 1 11/06/2023 02:48 WG2165059 Naphthalene 0.0877 0.00100 0.00500 1 11/06/2023 02:48 WG2165059 (S) Toluene-d8 97.9 80.0-120 11/06/2023 02:48 WG2165059 (S) 4-Bromofluorobenzene 96.7 77.0-126 11/06/2023 02:48 WG2165059 (S) 1,2-Dichloroethane-d4 103 70.0-130 11/06/2023 02:48 WG2165059 Semi-Volatile Organic Compounds (GC) by Method 8015D Result Qualifier MDL RDL Dilution Analysis Batch Analyte mg/l mg/l mg/l date / time C10-C28 Diesel Range 5.88 0.0222 0.100 1 11/07/2023 10:41 WG2164389 C28-C40 Oil Range 0.155 B 0.0118 0.100 1 11/07/2023 10:41 WG2164389 (S) o-Terphenyl 132 52.0-156 11/07/2023 10:41 WG2164389 Semi-Volatile Organic Compounds (GC) by Method 8015-SGT Result Qualifier MDL RDL Dilution Analysis Batch Analyte mg/l mg/l mg/l date / time C10-C28 Diesel Range 4.83 0.0222 0.100 1 11/07/2023 21:03 WG2164390 C28-C40 Oil Range U 0.0118 0.100 1 11/07/2023 21:03 WG2164390 (S) o-Terphenyl 96.3 52.0-156 11/07/2023 21:03 WG2164390 Sample Narrative: L1672957-02 WG2164390: Sample resembles laboratory standard for Diesel. 1 Cp 2 Tc 3 Ss 4 Cn 5 Sr 6 Qc 7 Gl 8 Al 9 Sc ACCOUNT:PROJECT:SDG:DATE/TIME:PAGE: Arcadis - Chevron - UT 30064298 07.21 L1672957 11/17/23 17:18 6 of 18 ACCOUNT:PROJECT:SDG:DATE/TIME:PAGE: Arcadis - Chevron - UT 30064298 07.21 L1672957 11/18/23 10:09 6 of 18 SAMPLE RESULTS - 03 L1672957 MW-2-W-231031 Collected date/time: 10/31/23 00:00 Wet Chemistry by Method 1664A Result Qualifier MDL RDL Dilution Analysis Batch Analyte mg/l mg/l mg/l date / time Oil & Grease (Hexane Extr)U 1.32 5.68 1 11/07/2023 09:28 WG2165008 Wet Chemistry by Method 9060A Result Qualifier MDL RDL Dilution Analysis Batch Analyte mg/l mg/l mg/l date / time TOC (Total Organic Carbon)5.24 0.102 1.00 1 11/15/2023 23:41 WG2171405 Volatile Organic Compounds (GC) by Method 8015D/GRO Result Qualifier MDL RDL Dilution Analysis Batch Analyte mg/l mg/l mg/l date / time TPH (GC/FID) Low Fraction 0.363 0.0314 0.100 1 11/07/2023 12:23 WG2165904 (S) a,a,a-Trifluorotoluene(FID)98.5 78.0-120 11/07/2023 12:23 WG2165904 Volatile Organic Compounds (GC/MS) by Method 8260B Result Qualifier MDL RDL Dilution Analysis Batch Analyte mg/l mg/l mg/l date / time Benzene 0.00644 0.0000941 0.00100 1 11/06/2023 03:08 WG2165059 Toluene 0.000372 J 0.000278 0.00100 1 11/06/2023 03:08 WG2165059 Ethylbenzene 0.000382 J 0.000137 0.00100 1 11/06/2023 03:08 WG2165059 Total Xylenes U 0.000174 0.00300 1 11/06/2023 03:08 WG2165059 Methyl tert-butyl ether U 0.000101 0.00100 1 11/06/2023 03:08 WG2165059 1,2-Dichloroethane U 0.0000819 0.00100 1 11/06/2023 03:08 WG2165059 1,2-Dibromoethane U 0.000126 0.00100 1 11/06/2023 03:08 WG2165059 Naphthalene 0.0172 0.00100 0.00500 1 11/06/2023 03:08 WG2165059 (S) Toluene-d8 97.5 80.0-120 11/06/2023 03:08 WG2165059 (S) 4-Bromofluorobenzene 95.6 77.0-126 11/06/2023 03:08 WG2165059 (S) 1,2-Dichloroethane-d4 102 70.0-130 11/06/2023 03:08 WG2165059 Semi-Volatile Organic Compounds (GC) by Method 8015D Result Qualifier MDL RDL Dilution Analysis Batch Analyte mg/l mg/l mg/l date / time C10-C28 Diesel Range 1.30 0.0222 0.100 1 11/07/2023 11:01 WG2164389 C28-C40 Oil Range 0.224 B 0.0118 0.100 1 11/07/2023 11:01 WG2164389 (S) o-Terphenyl 106 52.0-156 11/07/2023 11:01 WG2164389 Semi-Volatile Organic Compounds (GC) by Method 8015-SGT Result Qualifier MDL RDL Dilution Analysis Batch Analyte mg/l mg/l mg/l date / time C10-C28 Diesel Range 0.720 0.0222 0.100 1 11/07/2023 21:40 WG2164390 C28-C40 Oil Range U 0.0118 0.100 1 11/07/2023 21:40 WG2164390 (S) o-Terphenyl 95.3 52.0-156 11/07/2023 21:40 WG2164390 Sample Narrative: L1672957-03 WG2164390: Sample resembles laboratory standard for Diesel. 1 Cp 2 Tc 3 Ss 4 Cn 5 Sr 6 Qc 7 Gl 8 Al 9 Sc ACCOUNT:PROJECT:SDG:DATE/TIME:PAGE: Arcadis - Chevron - UT 30064298 07.21 L1672957 11/17/23 17:18 7 of 18 ACCOUNT:PROJECT:SDG:DATE/TIME:PAGE: Arcadis - Chevron - UT 30064298 07.21 L1672957 11/18/23 10:09 7 of 18 SAMPLE RESULTS - 04 L1672957 TRIP BLANK-231031 Collected date/time: 10/31/23 00:00 Volatile Organic Compounds (GC/MS) by Method 8260B Result Qualifier MDL RDL Dilution Analysis Batch Analyte mg/l mg/l mg/l date / time Benzene U 0.0000941 0.00100 1 11/06/2023 02:06 WG2165059 Toluene U 0.000278 0.00100 1 11/06/2023 02:06 WG2165059 Ethylbenzene U 0.000137 0.00100 1 11/06/2023 02:06 WG2165059 Total Xylenes U 0.000174 0.00300 1 11/06/2023 02:06 WG2165059 Methyl tert-butyl ether U 0.000101 0.00100 1 11/06/2023 02:06 WG2165059 1,2-Dichloroethane U 0.0000819 0.00100 1 11/06/2023 02:06 WG2165059 1,2-Dibromoethane U 0.000126 0.00100 1 11/06/2023 02:06 WG2165059 Naphthalene U 0.00100 0.00500 1 11/06/2023 02:06 WG2165059 (S) Toluene-d8 98.4 80.0-120 11/06/2023 02:06 WG2165059 (S) 4-Bromofluorobenzene 89.7 77.0-126 11/06/2023 02:06 WG2165059 (S) 1,2-Dichloroethane-d4 111 70.0-130 11/06/2023 02:06 WG2165059 1 Cp 2 Tc 3 Ss 4 Cn 5 Sr 6 Qc 7 Gl 8 Al 9 Sc ACCOUNT:PROJECT:SDG:DATE/TIME:PAGE: Arcadis - Chevron - UT 30064298 07.21 L1672957 11/17/23 17:18 8 of 18 ACCOUNT:PROJECT:SDG:DATE/TIME:PAGE: Arcadis - Chevron - UT 30064298 07.21 L1672957 11/18/23 10:09 8 of 18 QUALITY CONTROL SUMMARYWG2165008 Wet Chemistry by Method 1664A L1672957-01,02,03 Method Blank (MB) (MB) R3996339-1 11/07/23 09:28 MB Result MB Qualifier MB MDL MB RDL Analyte mg/l mg/l mg/l Oil & Grease (Hexane Extr)U 1.16 5.00 Laboratory Control Sample (LCS) • Laboratory Control Sample Duplicate (LCSD) (LCS) R3996339-2 11/07/23 09:28 • (LCSD) R3996339-3 11/07/23 09:28 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 %%%%% Oil & Grease (Hexane Extr)40.0 38.9 39.0 97.3 97.5 78.0-114 0.257 20 L1673195-01 Original Sample (OS) • Matrix Spike (MS) (OS) L1673195-01 11/07/23 09:28 • (MS) R3996339-4 11/07/23 09:28 Spike Amount Original Result MS Result MS Rec.Dilution Rec. Limits MS Qualifier Analyte mg/l mg/l mg/l %% Oil & Grease (Hexane Extr)40.0 23.9 69.8 115 1 78.0-114 J5 1 Cp 2 Tc 3 Ss 4 Cn 5 Sr 6 Qc 7 Gl 8 Al 9 Sc ACCOUNT:PROJECT:SDG:DATE/TIME:PAGE: Arcadis - Chevron - UT 30064298 07.21 L1672957 11/17/23 17:18 9 of 18 ACCOUNT:PROJECT:SDG:DATE/TIME:PAGE: Arcadis - Chevron - UT 30064298 07.21 L1672957 11/18/23 10:09 9 of 18 QUALITY CONTROL SUMMARYWG2171405 Wet Chemistry by Method 9060A L1672957-01,02,03 Method Blank (MB) (MB) R4001006-2 11/15/23 18:06 MB Result MB Qualifier MB MDL MB RDL Analyte mg/l mg/l mg/l TOC (Total Organic Carbon)0.141 J 0.102 1.00 L1672957-02 Original Sample (OS) • Duplicate (DUP) (OS) L1672957-02 11/15/23 23:12 • (DUP) R4001006-5 11/15/23 23:26 Original Result DUP Result Dilution DUP RPD DUP Qualifier DUP RPD Limits Analyte mg/l mg/l %% TOC (Total Organic Carbon)4.90 4.47 1 8.99 20 L1673293-04 Original Sample (OS) • Duplicate (DUP) (OS) L1673293-04 11/16/23 01:28 • (DUP) R4001006-6 11/16/23 01:43 Original Result DUP Result Dilution DUP RPD DUP Qualifier DUP RPD Limits Analyte mg/l mg/l %% TOC (Total Organic Carbon)6.02 6.02 1 0.000 20 Laboratory Control Sample (LCS) (LCS) R4001006-1 11/15/23 17:54 Spike Amount LCS Result LCS Rec.Rec. Limits LCS Qualifier Analyte mg/l mg/l %% TOC (Total Organic Carbon)25.0 24.3 97.3 85.0-115 L1672957-01 Original Sample (OS) • Matrix Spike (MS) • Matrix Spike Duplicate (MSD) (OS) L1672957-01 11/15/23 22:16 • (MS) R4001006-3 11/15/23 22:37 • (MSD) R4001006-4 11/15/23 22:57 Spike Amount Original Result MS Result MSD Result MS Rec.MSD Rec.Dilution Rec. Limits MS Qualifier MSD Qualifier RPD RPD Limits Analyte mg/l mg/l mg/l mg/l %%%%% TOC (Total Organic Carbon)25.0 5.53 26.1 26.2 82.4 82.7 1 85.0-115 J6 J6 0.268 20 L1673438-01 Original Sample (OS) • Matrix Spike (MS) • Matrix Spike Duplicate (MSD) (OS) L1673438-01 11/16/23 02:52 • (MS) R4001006-7 11/16/23 03:11 • (MSD) R4001006-8 11/16/23 03:33 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 %%%%% TOC (Total Organic Carbon)25.0 7.57 31.6 32.5 96.1 99.6 1 85.0-115 2.71 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: Arcadis - Chevron - UT 30064298 07.21 L1672957 11/17/23 17:18 10 of 18 ACCOUNT:PROJECT:SDG:DATE/TIME:PAGE: Arcadis - Chevron - UT 30064298 07.21 L1672957 11/18/23 10:09 10 of 18 QUALITY CONTROL SUMMARYWG2165904 Volatile Organic Compounds (GC) by Method 8015D/GRO L1672957-01,02,03 Method Blank (MB) (MB) R3997153-2 11/07/23 10:29 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)99.7 78.0-120 Laboratory Control Sample (LCS) (LCS) R3997153-1 11/07/23 09:44 Spike Amount LCS Result LCS Rec.Rec. Limits LCS Qualifier Analyte mg/l mg/l %% TPH (GC/FID) Low Fraction 5.50 4.91 89.3 72.0-127 (S) a,a,a-Trifluorotoluene(FID) 103 78.0-120 L1673645-08 Original Sample (OS) • Matrix Spike (MS) • Matrix Spike Duplicate (MSD) (OS) L1673645-08 11/07/23 18:48 • (MS) R3997153-3 11/07/23 19:10 • (MSD) R3997153-4 11/07/23 19:33 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 %%%%% TPH (GC/FID) Low Fraction 55.0 4.80 49.1 34.6 80.5 54.2 10 10.0-160 J3 34.6 22 (S) a,a,a-Trifluorotoluene(FID) 106 105 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: Arcadis - Chevron - UT 30064298 07.21 L1672957 11/17/23 17:18 11 of 18 ACCOUNT:PROJECT:SDG:DATE/TIME:PAGE: Arcadis - Chevron - UT 30064298 07.21 L1672957 11/18/23 10:09 11 of 18 QUALITY CONTROL SUMMARYWG2165059 Volatile Organic Compounds (GC/MS) by Method 8260B L1672957-01,02,03,04 Method Blank (MB) (MB) R3995829-4 11/05/23 23:12 MB Result MB Qualifier MB MDL MB RDL Analyte mg/l mg/l mg/l Benzene U 0.0000941 0.00100 Toluene U 0.000278 0.00100 Ethylbenzene U 0.000137 0.00100 Total Xylenes U 0.000174 0.00300 Methyl tert-butyl ether U 0.000101 0.00100 1,2-Dichloroethane U 0.0000819 0.00100 1,2-Dibromoethane U 0.000126 0.00100 Naphthalene U 0.00100 0.00500 (S) Toluene-d8 99.9 80.0-120 (S) 4-Bromofluorobenzene 91.6 77.0-126 (S) 1,2-Dichloroethane-d4 103 70.0-130 Laboratory Control Sample (LCS) • Laboratory Control Sample Duplicate (LCSD) (LCS) R3995829-1 11/05/23 19:59 • (LCSD) R3995829-3 11/05/23 22:51 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 %%%%% Benzene 0.00500 0.00452 0.00522 90.4 104 70.0-123 14.4 20 Toluene 0.00500 0.00480 0.00565 96.0 113 79.0-120 16.3 20 Ethylbenzene 0.00500 0.00487 0.00542 97.4 108 79.0-123 10.7 20 Total Xylenes 0.0150 0.0152 0.0170 101 113 79.0-123 11.2 20 Methyl tert-butyl ether 0.00500 0.00471 0.00547 94.2 109 68.0-125 14.9 20 1,2-Dichloroethane 0.00500 0.00531 0.00582 106 116 70.0-128 9.16 20 1,2-Dibromoethane 0.00500 0.00511 0.00565 102 113 80.0-122 10.0 20 Naphthalene 0.00500 0.00408 0.00440 81.6 88.0 54.0-135 7.55 20 (S) Toluene-d8 96.6 99.2 80.0-120 (S) 4-Bromofluorobenzene 88.8 95.1 77.0-126 (S) 1,2-Dichloroethane-d4 110 102 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: Arcadis - Chevron - UT 30064298 07.21 L1672957 11/17/23 17:18 12 of 18 ACCOUNT:PROJECT:SDG:DATE/TIME:PAGE: Arcadis - Chevron - UT 30064298 07.21 L1672957 11/18/23 10:09 12 of 18 QUALITY CONTROL SUMMARYWG2164389 Semi-Volatile Organic Compounds (GC) by Method 8015D L1672957-01,02,03 Method Blank (MB) (MB) R3996809-1 11/07/23 08:20 MB Result MB Qualifier MB MDL MB RDL Analyte mg/l mg/l mg/l C10-C28 Diesel Range 0.0419 J 0.0222 0.100 C28-C40 Oil Range 0.0380 J 0.0118 0.100 (S) o-Terphenyl 111 52.0-156 Laboratory Control Sample (LCS) • Laboratory Control Sample Duplicate (LCSD) (LCS) R3996809-2 11/07/23 08:40 • (LCSD) R3996809-3 11/07/23 09:01 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 1.52 1.52 101 101 50.0-150 0.000 20 (S) o-Terphenyl 106 102 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: Arcadis - Chevron - UT 30064298 07.21 L1672957 11/17/23 17:18 13 of 18 ACCOUNT:PROJECT:SDG:DATE/TIME:PAGE: Arcadis - Chevron - UT 30064298 07.21 L1672957 11/18/23 10:09 13 of 18 QUALITY CONTROL SUMMARYWG2164390 Semi-Volatile Organic Compounds (GC) by Method 8015-SGT L1672957-01,02,03 Method Blank (MB) (MB) R3997689-1 11/07/23 18:42 MB Result MB Qualifier MB MDL MB RDL Analyte mg/l mg/l mg/l C10-C28 Diesel Range 0.0512 J 0.0222 0.100 C28-C40 Oil Range 0.0666 J 0.0118 0.100 (S) o-Terphenyl 98.0 52.0-156 Laboratory Control Sample (LCS) • Laboratory Control Sample Duplicate (LCSD) (LCS) R3997689-2 11/07/23 19:02 • (LCSD) R3997689-3 11/07/23 19:22 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 1.52 1.50 101 100 50.0-150 1.32 20 (S) o-Terphenyl 100 93.0 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: Arcadis - Chevron - UT 30064298 07.21 L1672957 11/17/23 17:18 14 of 18 ACCOUNT:PROJECT:SDG:DATE/TIME:PAGE: Arcadis - Chevron - UT 30064298 07.21 L1672957 11/18/23 10:09 14 of 18 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. 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. 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. 1 Cp 2 Tc 3 Ss 4 Cn 5 Sr 6 Qc 7 Gl 8 Al 9 Sc ACCOUNT:PROJECT:SDG:DATE/TIME:PAGE: Arcadis - Chevron - UT 30064298 07.21 L1672957 11/17/23 17:18 15 of 18 ACCOUNT:PROJECT:SDG:DATE/TIME:PAGE: Arcadis - Chevron - UT 30064298 07.21 L1672957 11/18/23 10:09 15 of 18 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: Arcadis - Chevron - UT 30064298 07.21 L1672957 11/17/23 17:18 16 of 18 ACCOUNT:PROJECT:SDG:DATE/TIME:PAGE: Arcadis - Chevron - UT 30064298 07.21 L1672957 11/18/23 10:09 16 of 18 ANALYTICAL REPORT November 22, 2023 Arcadis - Chevron - UT Sample Delivery Group:L1673884 Samples Received:11/04/2023 Project Number:30064298 07.21 Description:377352 Site:1917 WEST 1700 SOUTH, SLC Report To:Carissa Mason 10 Exchange Place Suite 112 Salt Lake City, UT 84111 Entire Report Reviewed By: November 22, 2023 [Preliminary Report] Brian Ford 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: Arcadis - Chevron - UT 30064298 07.21 L1673884 11/22/23 11:14 1 of 27 November 22, 2023 Brian Ford Project Manager ACCOUNT:PROJECT:SDG:DATE/TIME:PAGE: Arcadis - Chevron - UT 30064298 07.21 L1673884 11/22/23 15:48 1 of 27 TABLE OF CONTENTS Cp: Cover Page 1 Tc: Table of Contents 2 Ss: Sample Summary 3 Cn: Case Narrative 5 Sr: Sample Results 6 MW-3-W-231101 L1673884-01 6 MW-9-W-231101 L1673884-02 7 MW-4-W-231101 L1673884-03 8 BD-1-W-231101 L1673884-04 9 MW-6-W-231102 L1673884-05 10 MW-13-W-231102 L1673884-06 11 MW-14-W-231102 L1673884-07 12 MW-12-W-231102 L1673884-08 13 TRIP BLANK-231102 L1673884-09 14 Qc: Quality Control Summary 15 Wet Chemistry by Method 1664A 15 Wet Chemistry by Method 9060A 16 Volatile Organic Compounds (GC) by Method 8015D/GRO 18 Volatile Organic Compounds (GC/MS) by Method 8260B 20 Semi-Volatile Organic Compounds (GC) by Method 8015D 22 Semi-Volatile Organic Compounds (GC) by Method 8015-SGT 23 Gl: Glossary of Terms 24 Al: Accreditations & Locations 25 Sc: Sample Chain of Custody 26 1 Cp 2 Tc 3 Ss 4 Cn 5 Sr 6 Qc 7 Gl 8 Al 9 Sc ACCOUNT:PROJECT:SDG:DATE/TIME:PAGE: Arcadis - Chevron - UT 30064298 07.21 L1673884 11/22/23 11:14 2 of 27 ACCOUNT:PROJECT:SDG:DATE/TIME:PAGE: Arcadis - Chevron - UT 30064298 07.21 L1673884 11/22/23 15:48 2 of 27 SAMPLE SUMMARY Collected by Collected date/time Received date/time MW-3-W-231101 L1673884-01 GW Bridger Cherry 11/01/23 10:20 11/04/23 08:00 Method Batch Dilution Preparation Analysis Analyst Location date/time date/time Wet Chemistry by Method 1664A WG2166514 1 11/07/23 18:05 11/08/23 02:36 AIW Mt. Juliet, TN Wet Chemistry by Method 9060A WG2174451 1 11/21/23 02:58 11/21/23 02:58 ASH Mt. Juliet, TN Volatile Organic Compounds (GC) by Method 8015D/GRO WG2170508 1 11/13/23 23:53 11/13/23 23:53 JHH Mt. Juliet, TN Volatile Organic Compounds (GC/MS) by Method 8260B WG2167086 5 11/08/23 19:28 11/08/23 19:28 JBE Mt. Juliet, TN Semi-Volatile Organic Compounds (GC) by Method 8015D WG2164389 1 11/06/23 05:38 11/07/23 13:02 TJD Mt. Juliet, TN Semi-Volatile Organic Compounds (GC) by Method 8015-SGT WG2164390 1 11/06/23 05:40 11/07/23 22:00 DMG Mt. Juliet, TN Collected by Collected date/time Received date/time MW-9-W-231101 L1673884-02 GW Bridger Cherry 11/01/23 14:00 11/04/23 08:00 Method Batch Dilution Preparation Analysis Analyst Location date/time date/time Wet Chemistry by Method 1664A WG2166514 1 11/07/23 18:05 11/08/23 02:36 AIW Mt. Juliet, TN Wet Chemistry by Method 9060A WG2174451 1 11/21/23 03:27 11/21/23 03:27 ASH Mt. Juliet, TN Volatile Organic Compounds (GC) by Method 8015D/GRO WG2167514 1 11/09/23 04:03 11/09/23 04:03 JHH Mt. Juliet, TN Volatile Organic Compounds (GC/MS) by Method 8260B WG2167086 1 11/08/23 16:19 11/08/23 16:19 JBE Mt. Juliet, TN Volatile Organic Compounds (GC/MS) by Method 8260B WG2168281 1 11/10/23 04:18 11/10/23 04:18 JHH Mt. Juliet, TN Semi-Volatile Organic Compounds (GC) by Method 8015D WG2164389 1 11/06/23 05:38 11/07/23 13:22 TJD Mt. Juliet, TN Semi-Volatile Organic Compounds (GC) by Method 8015-SGT WG2164390 1 11/06/23 05:40 11/07/23 22:21 DMG Mt. Juliet, TN Collected by Collected date/time Received date/time MW-4-W-231101 L1673884-03 GW Bridger Cherry 11/01/23 16:05 11/04/23 08:00 Method Batch Dilution Preparation Analysis Analyst Location date/time date/time Wet Chemistry by Method 1664A WG2166514 1 11/07/23 18:05 11/08/23 02:36 AIW Mt. Juliet, TN Wet Chemistry by Method 9060A WG2175127 1 11/21/23 19:23 11/21/23 19:23 DMA Mt. Juliet, TN Volatile Organic Compounds (GC) by Method 8015D/GRO WG2167514 5 11/09/23 08:48 11/09/23 08:48 JHH Mt. Juliet, TN Volatile Organic Compounds (GC/MS) by Method 8260B WG2167086 5 11/08/23 19:47 11/08/23 19:47 JBE Mt. Juliet, TN Semi-Volatile Organic Compounds (GC) by Method 8015D WG2164389 1 11/06/23 05:38 11/07/23 13:43 TJD Mt. Juliet, TN Semi-Volatile Organic Compounds (GC) by Method 8015-SGT WG2164390 1 11/06/23 05:40 11/07/23 22:41 DMG Mt. Juliet, TN Collected by Collected date/time Received date/time BD-1-W-231101 L1673884-04 GW Bridger Cherry 11/01/23 00:00 11/04/23 08:00 Method Batch Dilution Preparation Analysis Analyst Location date/time date/time Wet Chemistry by Method 1664A WG2166514 1 11/07/23 18:05 11/08/23 02:36 AIW Mt. Juliet, TN Wet Chemistry by Method 9060A WG2175127 1 11/21/23 19:38 11/21/23 19:38 DMA Mt. Juliet, TN Volatile Organic Compounds (GC) by Method 8015D/GRO WG2167514 1 11/09/23 04:25 11/09/23 04:25 JHH Mt. Juliet, TN Volatile Organic Compounds (GC/MS) by Method 8260B WG2167086 1 11/08/23 16:38 11/08/23 16:38 JBE Mt. Juliet, TN Semi-Volatile Organic Compounds (GC) by Method 8015D WG2164389 1 11/06/23 05:38 11/07/23 14:03 TJD Mt. Juliet, TN Semi-Volatile Organic Compounds (GC) by Method 8015-SGT WG2164390 1 11/06/23 05:40 11/07/23 23:01 DMG Mt. Juliet, TN Collected by Collected date/time Received date/time MW-6-W-231102 L1673884-05 GW Bridger Cherry 11/02/23 09:50 11/04/23 08:00 Method Batch Dilution Preparation Analysis Analyst Location date/time date/time Wet Chemistry by Method 1664A WG2166514 1 11/07/23 18:05 11/08/23 02:36 AIW Mt. Juliet, TN Wet Chemistry by Method 9060A WG2175127 1 11/21/23 19:54 11/21/23 19:54 DMA Mt. Juliet, TN Volatile Organic Compounds (GC) by Method 8015D/GRO WG2167514 1 11/09/23 04:47 11/09/23 04:47 JHH Mt. Juliet, TN Volatile Organic Compounds (GC/MS) by Method 8260B WG2167086 1 11/08/23 16:56 11/08/23 16:56 JBE Mt. Juliet, TN Semi-Volatile Organic Compounds (GC) by Method 8015D WG2164389 1 11/06/23 05:38 11/07/23 14:23 TJD Mt. Juliet, TN Semi-Volatile Organic Compounds (GC) by Method 8015-SGT WG2164390 1 11/06/23 05:40 11/07/23 23:21 DMG 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: Arcadis - Chevron - UT 30064298 07.21 L1673884 11/22/23 11:14 3 of 27 ACCOUNT:PROJECT:SDG:DATE/TIME:PAGE: Arcadis - Chevron - UT 30064298 07.21 L1673884 11/22/23 15:48 3 of 27 SAMPLE SUMMARY Collected by Collected date/time Received date/time MW-13-W-231102 L1673884-06 GW Bridger Cherry 11/02/23 12:00 11/04/23 08:00 Method Batch Dilution Preparation Analysis Analyst Location date/time date/time Wet Chemistry by Method 1664A WG2166514 1 11/07/23 18:05 11/08/23 02:36 AIW Mt. Juliet, TN Wet Chemistry by Method 9060A WG2175127 1 11/21/23 20:25 11/21/23 20:25 DMA Mt. Juliet, TN Volatile Organic Compounds (GC) by Method 8015D/GRO WG2167514 1 11/09/23 05:09 11/09/23 05:09 JHH Mt. Juliet, TN Volatile Organic Compounds (GC/MS) by Method 8260B WG2167086 1 11/08/23 17:15 11/08/23 17:15 JBE Mt. Juliet, TN Semi-Volatile Organic Compounds (GC) by Method 8015D WG2164389 1 11/06/23 05:38 11/07/23 14:43 TJD Mt. Juliet, TN Semi-Volatile Organic Compounds (GC) by Method 8015-SGT WG2164390 1 11/06/23 05:40 11/07/23 23:41 DMG Mt. Juliet, TN Collected by Collected date/time Received date/time MW-14-W-231102 L1673884-07 GW Bridger Cherry 11/02/23 14:05 11/04/23 08:00 Method Batch Dilution Preparation Analysis Analyst Location date/time date/time Wet Chemistry by Method 1664A WG2166514 1 11/07/23 18:05 11/08/23 02:36 AIW Mt. Juliet, TN Wet Chemistry by Method 9060A WG2175127 1 11/21/23 22:00 11/21/23 22:00 DMA Mt. Juliet, TN Volatile Organic Compounds (GC) by Method 8015D/GRO WG2167514 1 11/09/23 05:31 11/09/23 05:31 JHH Mt. Juliet, TN Volatile Organic Compounds (GC/MS) by Method 8260B WG2167086 1 11/08/23 17:34 11/08/23 17:34 JBE Mt. Juliet, TN Semi-Volatile Organic Compounds (GC) by Method 8015D WG2164389 1 11/06/23 05:38 11/07/23 15:03 TJD Mt. Juliet, TN Semi-Volatile Organic Compounds (GC) by Method 8015-SGT WG2164390 1 11/06/23 05:40 11/08/23 00:01 DMG Mt. Juliet, TN Collected by Collected date/time Received date/time MW-12-W-231102 L1673884-08 GW Bridger Cherry 11/02/23 16:05 11/04/23 08:00 Method Batch Dilution Preparation Analysis Analyst Location date/time date/time Wet Chemistry by Method 1664A WG2166514 1 11/07/23 18:05 11/08/23 02:36 AIW Mt. Juliet, TN Wet Chemistry by Method 9060A WG2175127 1 11/21/23 22:16 11/21/23 22:16 DMA Mt. Juliet, TN Volatile Organic Compounds (GC) by Method 8015D/GRO WG2167514 1 11/09/23 05:53 11/09/23 05:53 JHH Mt. Juliet, TN Volatile Organic Compounds (GC/MS) by Method 8260B WG2167086 1 11/08/23 17:53 11/08/23 17:53 JBE Mt. Juliet, TN Semi-Volatile Organic Compounds (GC) by Method 8015D WG2164389 1 11/06/23 05:38 11/07/23 15:23 TJD Mt. Juliet, TN Semi-Volatile Organic Compounds (GC) by Method 8015-SGT WG2164390 1 11/06/23 05:40 11/08/23 00:22 DMG Mt. Juliet, TN Collected by Collected date/time Received date/time TRIP BLANK-231102 L1673884-09 GW Bridger Cherry 11/02/23 00:00 11/04/23 08:00 Method Batch Dilution Preparation Analysis Analyst Location date/time date/time Volatile Organic Compounds (GC/MS) by Method 8260B WG2167086 1 11/08/23 14:08 11/08/23 14:08 JBE 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: Arcadis - Chevron - UT 30064298 07.21 L1673884 11/22/23 11:14 4 of 27 ACCOUNT:PROJECT:SDG:DATE/TIME:PAGE: Arcadis - Chevron - UT 30064298 07.21 L1673884 11/22/23 15:48 4 of 27 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] Brian Ford 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: Arcadis - Chevron - UT 30064298 07.21 L1673884 11/22/23 11:14 5 of 27 Brian Ford Project Manager ACCOUNT:PROJECT:SDG:DATE/TIME:PAGE: Arcadis - Chevron - UT 30064298 07.21 L1673884 11/22/23 15:48 5 of 27 SAMPLE RESULTS - 01 L1673884 MW-3-W-231101 Collected date/time: 11/01/23 10:20 Wet Chemistry by Method 1664A Result Qualifier MDL RDL Dilution Analysis Batch Analyte mg/l mg/l mg/l date / time Oil & Grease (Hexane Extr)U 1.43 6.17 1 11/08/2023 02:36 WG2166514 Wet Chemistry by Method 9060A Result Qualifier MDL RDL Dilution Analysis Batch Analyte mg/l mg/l mg/l date / time TOC (Total Organic Carbon)2.23 0.102 1.00 1 11/21/2023 02:58 WG2174451 Volatile Organic Compounds (GC) by Method 8015D/GRO Result Qualifier MDL RDL Dilution Analysis Batch Analyte mg/l mg/l mg/l date / time TPH (GC/FID) Low Fraction 0.445 0.0314 0.100 1 11/13/2023 23:53 WG2170508 (S) a,a,a-Trifluorotoluene(FID)103 78.0-120 11/13/2023 23:53 WG2170508 Volatile Organic Compounds (GC/MS) by Method 8260B Result Qualifier MDL RDL Dilution Analysis Batch Analyte mg/l mg/l mg/l date / time Benzene 0.000535 J 0.000471 0.00500 5 11/08/2023 19:28 WG2167086 Toluene U 0.00139 0.00500 5 11/08/2023 19:28 WG2167086 Ethylbenzene 0.00179 J 0.000685 0.00500 5 11/08/2023 19:28 WG2167086 Total Xylenes U 0.000870 0.0150 5 11/08/2023 19:28 WG2167086 Methyl tert-butyl ether U 0.000505 0.00500 5 11/08/2023 19:28 WG2167086 1,2-Dichloroethane U 0.000409 0.00500 5 11/08/2023 19:28 WG2167086 1,2-Dibromoethane U 0.000630 0.00500 5 11/08/2023 19:28 WG2167086 Naphthalene U 0.00500 0.0250 5 11/08/2023 19:28 WG2167086 (S) Toluene-d8 99.9 80.0-120 11/08/2023 19:28 WG2167086 (S) 4-Bromofluorobenzene 109 77.0-126 11/08/2023 19:28 WG2167086 (S) 1,2-Dichloroethane-d4 107 70.0-130 11/08/2023 19:28 WG2167086 Sample Narrative: L1673884-01 WG2167086: Non-target compounds too high to run at a lower dilution. Semi-Volatile Organic Compounds (GC) by Method 8015D Result Qualifier MDL RDL Dilution Analysis Batch Analyte mg/l mg/l mg/l date / time C10-C28 Diesel Range 0.793 0.0222 0.100 1 11/07/2023 13:02 WG2164389 C28-C40 Oil Range U 0.0118 0.100 1 11/07/2023 13:02 WG2164389 (S) o-Terphenyl 117 52.0-156 11/07/2023 13:02 WG2164389 Semi-Volatile Organic Compounds (GC) by Method 8015-SGT Result Qualifier MDL RDL Dilution Analysis Batch Analyte mg/l mg/l mg/l date / time C10-C28 Diesel Range 0.519 0.0222 0.100 1 11/07/2023 22:00 WG2164390 C28-C40 Oil Range U 0.0118 0.100 1 11/07/2023 22:00 WG2164390 (S) o-Terphenyl 94.7 52.0-156 11/07/2023 22:00 WG2164390 1 Cp 2 Tc 3 Ss 4 Cn 5 Sr 6 Qc 7 Gl 8 Al 9 Sc ACCOUNT:PROJECT:SDG:DATE/TIME:PAGE: Arcadis - Chevron - UT 30064298 07.21 L1673884 11/22/23 11:14 6 of 27 ACCOUNT:PROJECT:SDG:DATE/TIME:PAGE: Arcadis - Chevron - UT 30064298 07.21 L1673884 11/22/23 15:48 6 of 27 SAMPLE RESULTS - 02 L1673884 MW-9-W-231101 Collected date/time: 11/01/23 14:00 Wet Chemistry by Method 1664A Result Qualifier MDL RDL Dilution Analysis Batch Analyte mg/l mg/l mg/l date / time Oil & Grease (Hexane Extr)U 1.41 6.10 1 11/08/2023 02:36 WG2166514 Wet Chemistry by Method 9060A Result Qualifier MDL RDL Dilution Analysis Batch Analyte mg/l mg/l mg/l date / time TOC (Total Organic Carbon)3.13 0.102 1.00 1 11/21/2023 03:27 WG2174451 Volatile Organic Compounds (GC) by Method 8015D/GRO Result Qualifier MDL RDL Dilution Analysis Batch Analyte mg/l mg/l mg/l date / time TPH (GC/FID) Low Fraction 0.110 0.0314 0.100 1 11/09/2023 04:03 WG2167514 (S) a,a,a-Trifluorotoluene(FID)103 78.0-120 11/09/2023 04:03 WG2167514 Volatile Organic Compounds (GC/MS) by Method 8260B Result Qualifier MDL RDL Dilution Analysis Batch Analyte mg/l mg/l mg/l date / time Benzene 0.000345 J 0.0000941 0.00100 1 11/08/2023 16:19 WG2167086 Toluene U 0.000278 0.00100 1 11/08/2023 16:19 WG2167086 Ethylbenzene U 0.000137 0.00100 1 11/10/2023 04:18 WG2168281 Total Xylenes U 0.000174 0.00300 1 11/10/2023 04:18 WG2168281 Methyl tert-butyl ether U 0.000101 0.00100 1 11/08/2023 16:19 WG2167086 1,2-Dichloroethane U 0.0000819 0.00100 1 11/08/2023 16:19 WG2167086 1,2-Dibromoethane U 0.000126 0.00100 1 11/08/2023 16:19 WG2167086 Naphthalene 0.0198 0.00100 0.00500 1 11/10/2023 04:18 WG2168281 (S) Toluene-d8 103 80.0-120 11/08/2023 16:19 WG2167086 (S) Toluene-d8 105 80.0-120 11/10/2023 04:18 WG2168281 (S) 4-Bromofluorobenzene 109 77.0-126 11/08/2023 16:19 WG2167086 (S) 4-Bromofluorobenzene 95.4 77.0-126 11/10/2023 04:18 WG2168281 (S) 1,2-Dichloroethane-d4 97.6 70.0-130 11/08/2023 16:19 WG2167086 (S) 1,2-Dichloroethane-d4 104 70.0-130 11/10/2023 04:18 WG2168281 Semi-Volatile Organic Compounds (GC) by Method 8015D Result Qualifier MDL RDL Dilution Analysis Batch Analyte mg/l mg/l mg/l date / time C10-C28 Diesel Range 1.96 0.0222 0.100 1 11/07/2023 13:22 WG2164389 C28-C40 Oil Range 0.214 B 0.0118 0.100 1 11/07/2023 13:22 WG2164389 (S) o-Terphenyl 115 52.0-156 11/07/2023 13:22 WG2164389 Semi-Volatile Organic Compounds (GC) by Method 8015-SGT Result Qualifier MDL RDL Dilution Analysis Batch Analyte mg/l mg/l mg/l date / time C10-C28 Diesel Range 1.12 0.0222 0.100 1 11/07/2023 22:21 WG2164390 C28-C40 Oil Range U 0.0118 0.100 1 11/07/2023 22:21 WG2164390 (S) o-Terphenyl 94.7 52.0-156 11/07/2023 22:21 WG2164390 1 Cp 2 Tc 3 Ss 4 Cn 5 Sr 6 Qc 7 Gl 8 Al 9 Sc ACCOUNT:PROJECT:SDG:DATE/TIME:PAGE: Arcadis - Chevron - UT 30064298 07.21 L1673884 11/22/23 11:14 7 of 27 ACCOUNT:PROJECT:SDG:DATE/TIME:PAGE: Arcadis - Chevron - UT 30064298 07.21 L1673884 11/22/23 15:48 7 of 27 SAMPLE RESULTS - 03 L1673884 MW-4-W-231101 Collected date/time: 11/01/23 16:05 Wet Chemistry by Method 1664A Result Qualifier MDL RDL Dilution Analysis Batch Analyte mg/l mg/l mg/l date / time Oil & Grease (Hexane Extr)U 1.43 6.17 1 11/08/2023 02:36 WG2166514 Wet Chemistry by Method 9060A Result Qualifier MDL RDL Dilution Analysis Batch Analyte mg/l mg/l mg/l date / time TOC (Total Organic Carbon)4.53 0.102 1.00 1 11/21/2023 19:23 WG2175127 Volatile Organic Compounds (GC) by Method 8015D/GRO Result Qualifier MDL RDL Dilution Analysis Batch Analyte mg/l mg/l mg/l date / time TPH (GC/FID) Low Fraction 2.20 0.157 0.500 5 11/09/2023 08:48 WG2167514 (S) a,a,a-Trifluorotoluene(FID)98.8 78.0-120 11/09/2023 08:48 WG2167514 Volatile Organic Compounds (GC/MS) by Method 8260B Result Qualifier MDL RDL Dilution Analysis Batch Analyte mg/l mg/l mg/l date / time Benzene 0.000740 J 0.000471 0.00500 5 11/08/2023 19:47 WG2167086 Toluene U 0.00139 0.00500 5 11/08/2023 19:47 WG2167086 Ethylbenzene 0.0171 0.000685 0.00500 5 11/08/2023 19:47 WG2167086 Total Xylenes U 0.000870 0.0150 5 11/08/2023 19:47 WG2167086 Methyl tert-butyl ether U 0.000505 0.00500 5 11/08/2023 19:47 WG2167086 1,2-Dichloroethane U 0.000409 0.00500 5 11/08/2023 19:47 WG2167086 1,2-Dibromoethane U 0.000630 0.00500 5 11/08/2023 19:47 WG2167086 Naphthalene U 0.00500 0.0250 5 11/08/2023 19:47 WG2167086 (S) Toluene-d8 99.9 80.0-120 11/08/2023 19:47 WG2167086 (S) 4-Bromofluorobenzene 109 77.0-126 11/08/2023 19:47 WG2167086 (S) 1,2-Dichloroethane-d4 106 70.0-130 11/08/2023 19:47 WG2167086 Sample Narrative: L1673884-03 WG2167086: Non-target compounds too high to run at a lower dilution. Semi-Volatile Organic Compounds (GC) by Method 8015D Result Qualifier MDL RDL Dilution Analysis Batch Analyte mg/l mg/l mg/l date / time C10-C28 Diesel Range 0.704 0.0222 0.100 1 11/07/2023 13:43 WG2164389 C28-C40 Oil Range 0.0831 B J 0.0118 0.100 1 11/07/2023 13:43 WG2164389 (S) o-Terphenyl 109 52.0-156 11/07/2023 13:43 WG2164389 Semi-Volatile Organic Compounds (GC) by Method 8015-SGT Result Qualifier MDL RDL Dilution Analysis Batch Analyte mg/l mg/l mg/l date / time C10-C28 Diesel Range 0.447 B 0.0222 0.100 1 11/07/2023 22:41 WG2164390 C28-C40 Oil Range U 0.0118 0.100 1 11/07/2023 22:41 WG2164390 (S) o-Terphenyl 91.1 52.0-156 11/07/2023 22:41 WG2164390 1 Cp 2 Tc 3 Ss 4 Cn 5 Sr 6 Qc 7 Gl 8 Al 9 Sc ACCOUNT:PROJECT:SDG:DATE/TIME:PAGE: Arcadis - Chevron - UT 30064298 07.21 L1673884 11/22/23 11:14 8 of 27 ACCOUNT:PROJECT:SDG:DATE/TIME:PAGE: Arcadis - Chevron - UT 30064298 07.21 L1673884 11/22/23 15:48 8 of 27 SAMPLE RESULTS - 04 L1673884 BD-1-W-231101 Collected date/time: 11/01/23 00:00 Wet Chemistry by Method 1664A Result Qualifier MDL RDL Dilution Analysis Batch Analyte mg/l mg/l mg/l date / time Oil & Grease (Hexane Extr)U 1.22 5.26 1 11/08/2023 02:36 WG2166514 Wet Chemistry by Method 9060A Result Qualifier MDL RDL Dilution Analysis Batch Analyte mg/l mg/l mg/l date / time TOC (Total Organic Carbon)4.41 0.102 1.00 1 11/21/2023 19:38 WG2175127 Volatile Organic Compounds (GC) by Method 8015D/GRO Result Qualifier MDL RDL Dilution Analysis Batch Analyte mg/l mg/l mg/l date / time TPH (GC/FID) Low Fraction 2.82 0.0314 0.100 1 11/09/2023 04:25 WG2167514 (S) a,a,a-Trifluorotoluene(FID)108 78.0-120 11/09/2023 04:25 WG2167514 Volatile Organic Compounds (GC/MS) by Method 8260B Result Qualifier MDL RDL Dilution Analysis Batch Analyte mg/l mg/l mg/l date / time Benzene 0.000571 J 0.0000941 0.00100 1 11/08/2023 16:38 WG2167086 Toluene 0.000711 J 0.000278 0.00100 1 11/08/2023 16:38 WG2167086 Ethylbenzene 0.0191 0.000137 0.00100 1 11/08/2023 16:38 WG2167086 Total Xylenes 0.000661 J 0.000174 0.00300 1 11/08/2023 16:38 WG2167086 Methyl tert-butyl ether U 0.000101 0.00100 1 11/08/2023 16:38 WG2167086 1,2-Dichloroethane U 0.0000819 0.00100 1 11/08/2023 16:38 WG2167086 1,2-Dibromoethane U 0.000126 0.00100 1 11/08/2023 16:38 WG2167086 Naphthalene 0.00181 J 0.00100 0.00500 1 11/08/2023 16:38 WG2167086 (S) Toluene-d8 99.6 80.0-120 11/08/2023 16:38 WG2167086 (S) 4-Bromofluorobenzene 106 77.0-126 11/08/2023 16:38 WG2167086 (S) 1,2-Dichloroethane-d4 99.2 70.0-130 11/08/2023 16:38 WG2167086 Semi-Volatile Organic Compounds (GC) by Method 8015D Result Qualifier MDL RDL Dilution Analysis Batch Analyte mg/l mg/l mg/l date / time C10-C28 Diesel Range 0.687 0.0222 0.100 1 11/07/2023 14:03 WG2164389 C28-C40 Oil Range 0.0531 B J 0.0118 0.100 1 11/07/2023 14:03 WG2164389 (S) o-Terphenyl 113 52.0-156 11/07/2023 14:03 WG2164389 Semi-Volatile Organic Compounds (GC) by Method 8015-SGT Result Qualifier MDL RDL Dilution Analysis Batch Analyte mg/l mg/l mg/l date / time C10-C28 Diesel Range 0.539 0.0222 0.100 1 11/07/2023 23:01 WG2164390 C28-C40 Oil Range U 0.0118 0.100 1 11/07/2023 23:01 WG2164390 (S) o-Terphenyl 110 52.0-156 11/07/2023 23:01 WG2164390 1 Cp 2 Tc 3 Ss 4 Cn 5 Sr 6 Qc 7 Gl 8 Al 9 Sc ACCOUNT:PROJECT:SDG:DATE/TIME:PAGE: Arcadis - Chevron - UT 30064298 07.21 L1673884 11/22/23 11:14 9 of 27 ACCOUNT:PROJECT:SDG:DATE/TIME:PAGE: Arcadis - Chevron - UT 30064298 07.21 L1673884 11/22/23 15:48 9 of 27 SAMPLE RESULTS - 05 L1673884 MW-6-W-231102 Collected date/time: 11/02/23 09:50 Wet Chemistry by Method 1664A Result Qualifier MDL RDL Dilution Analysis Batch Analyte mg/l mg/l mg/l date / time Oil & Grease (Hexane Extr)U 1.36 5.88 1 11/08/2023 02:36 WG2166514 Wet Chemistry by Method 9060A Result Qualifier MDL RDL Dilution Analysis Batch Analyte mg/l mg/l mg/l date / time TOC (Total Organic Carbon)4.40 0.102 1.00 1 11/21/2023 19:54 WG2175127 Volatile Organic Compounds (GC) by Method 8015D/GRO Result Qualifier MDL RDL Dilution Analysis Batch Analyte mg/l mg/l mg/l date / time TPH (GC/FID) Low Fraction 0.134 0.0314 0.100 1 11/09/2023 04:47 WG2167514 (S) a,a,a-Trifluorotoluene(FID)103 78.0-120 11/09/2023 04:47 WG2167514 Volatile Organic Compounds (GC/MS) by Method 8260B Result Qualifier MDL RDL Dilution Analysis Batch Analyte mg/l mg/l mg/l date / time Benzene U 0.0000941 0.00100 1 11/08/2023 16:56 WG2167086 Toluene U 0.000278 0.00100 1 11/08/2023 16:56 WG2167086 Ethylbenzene U 0.000137 0.00100 1 11/08/2023 16:56 WG2167086 Total Xylenes U 0.000174 0.00300 1 11/08/2023 16:56 WG2167086 Methyl tert-butyl ether U 0.000101 0.00100 1 11/08/2023 16:56 WG2167086 1,2-Dichloroethane U 0.0000819 0.00100 1 11/08/2023 16:56 WG2167086 1,2-Dibromoethane U 0.000126 0.00100 1 11/08/2023 16:56 WG2167086 Naphthalene U 0.00100 0.00500 1 11/08/2023 16:56 WG2167086 (S) Toluene-d8 103 80.0-120 11/08/2023 16:56 WG2167086 (S) 4-Bromofluorobenzene 106 77.0-126 11/08/2023 16:56 WG2167086 (S) 1,2-Dichloroethane-d4 100 70.0-130 11/08/2023 16:56 WG2167086 Semi-Volatile Organic Compounds (GC) by Method 8015D Result Qualifier MDL RDL Dilution Analysis Batch Analyte mg/l mg/l mg/l date / time C10-C28 Diesel Range 0.196 B 0.0222 0.100 1 11/07/2023 14:23 WG2164389 C28-C40 Oil Range 0.220 B 0.0118 0.100 1 11/07/2023 14:23 WG2164389 (S) o-Terphenyl 103 52.0-156 11/07/2023 14:23 WG2164389 Semi-Volatile Organic Compounds (GC) by Method 8015-SGT Result Qualifier MDL RDL Dilution Analysis Batch Analyte mg/l mg/l mg/l date / time C10-C28 Diesel Range 0.0350 B J 0.0222 0.100 1 11/07/2023 23:21 WG2164390 C28-C40 Oil Range U 0.0118 0.100 1 11/07/2023 23:21 WG2164390 (S) o-Terphenyl 90.0 52.0-156 11/07/2023 23:21 WG2164390 1 Cp 2 Tc 3 Ss 4 Cn 5 Sr 6 Qc 7 Gl 8 Al 9 Sc ACCOUNT:PROJECT:SDG:DATE/TIME:PAGE: Arcadis - Chevron - UT 30064298 07.21 L1673884 11/22/23 11:14 10 of 27 ACCOUNT:PROJECT:SDG:DATE/TIME:PAGE: Arcadis - Chevron - UT 30064298 07.21 L1673884 11/22/23 15:48 10 of 27 SAMPLE RESULTS - 06 L1673884 MW-13-W-231102 Collected date/time: 11/02/23 12:00 Wet Chemistry by Method 1664A Result Qualifier MDL RDL Dilution Analysis Batch Analyte mg/l mg/l mg/l date / time Oil & Grease (Hexane Extr)U 1.35 5.81 1 11/08/2023 02:36 WG2166514 Wet Chemistry by Method 9060A Result Qualifier MDL RDL Dilution Analysis Batch Analyte mg/l mg/l mg/l date / time TOC (Total Organic Carbon)4.53 0.102 1.00 1 11/21/2023 20:25 WG2175127 Volatile Organic Compounds (GC) by Method 8015D/GRO Result Qualifier MDL RDL Dilution Analysis Batch Analyte mg/l mg/l mg/l date / time TPH (GC/FID) Low Fraction 0.0365 J 0.0314 0.100 1 11/09/2023 05:09 WG2167514 (S) a,a,a-Trifluorotoluene(FID)102 78.0-120 11/09/2023 05:09 WG2167514 Volatile Organic Compounds (GC/MS) by Method 8260B Result Qualifier MDL RDL Dilution Analysis Batch Analyte mg/l mg/l mg/l date / time Benzene U 0.0000941 0.00100 1 11/08/2023 17:15 WG2167086 Toluene U 0.000278 0.00100 1 11/08/2023 17:15 WG2167086 Ethylbenzene U 0.000137 0.00100 1 11/08/2023 17:15 WG2167086 Total Xylenes U 0.000174 0.00300 1 11/08/2023 17:15 WG2167086 Methyl tert-butyl ether U 0.000101 0.00100 1 11/08/2023 17:15 WG2167086 1,2-Dichloroethane U 0.0000819 0.00100 1 11/08/2023 17:15 WG2167086 1,2-Dibromoethane U 0.000126 0.00100 1 11/08/2023 17:15 WG2167086 Naphthalene U 0.00100 0.00500 1 11/08/2023 17:15 WG2167086 (S) Toluene-d8 101 80.0-120 11/08/2023 17:15 WG2167086 (S) 4-Bromofluorobenzene 106 77.0-126 11/08/2023 17:15 WG2167086 (S) 1,2-Dichloroethane-d4 105 70.0-130 11/08/2023 17:15 WG2167086 Semi-Volatile Organic Compounds (GC) by Method 8015D Result Qualifier MDL RDL Dilution Analysis Batch Analyte mg/l mg/l mg/l date / time C10-C28 Diesel Range 0.516 0.0222 0.100 1 11/07/2023 14:43 WG2164389 C28-C40 Oil Range 0.289 B 0.0118 0.100 1 11/07/2023 14:43 WG2164389 (S) o-Terphenyl 114 52.0-156 11/07/2023 14:43 WG2164389 Semi-Volatile Organic Compounds (GC) by Method 8015-SGT Result Qualifier MDL RDL Dilution Analysis Batch Analyte mg/l mg/l mg/l date / time C10-C28 Diesel Range 0.164 B 0.0222 0.100 1 11/07/2023 23:41 WG2164390 C28-C40 Oil Range U 0.0118 0.100 1 11/07/2023 23:41 WG2164390 (S) o-Terphenyl 105 52.0-156 11/07/2023 23:41 WG2164390 1 Cp 2 Tc 3 Ss 4 Cn 5 Sr 6 Qc 7 Gl 8 Al 9 Sc ACCOUNT:PROJECT:SDG:DATE/TIME:PAGE: Arcadis - Chevron - UT 30064298 07.21 L1673884 11/22/23 11:14 11 of 27 ACCOUNT:PROJECT:SDG:DATE/TIME:PAGE: Arcadis - Chevron - UT 30064298 07.21 L1673884 11/22/23 15:48 11 of 27 SAMPLE RESULTS - 07 L1673884 MW-14-W-231102 Collected date/time: 11/02/23 14:05 Wet Chemistry by Method 1664A Result Qualifier MDL RDL Dilution Analysis Batch Analyte mg/l mg/l mg/l date / time Oil & Grease (Hexane Extr)U 1.29 5.56 1 11/08/2023 02:36 WG2166514 Wet Chemistry by Method 9060A Result Qualifier MDL RDL Dilution Analysis Batch Analyte mg/l mg/l mg/l date / time TOC (Total Organic Carbon)4.50 0.102 1.00 1 11/21/2023 22:00 WG2175127 Volatile Organic Compounds (GC) by Method 8015D/GRO Result Qualifier MDL RDL Dilution Analysis Batch Analyte mg/l mg/l mg/l date / time TPH (GC/FID) Low Fraction 0.0601 J 0.0314 0.100 1 11/09/2023 05:31 WG2167514 (S) a,a,a-Trifluorotoluene(FID)103 78.0-120 11/09/2023 05:31 WG2167514 Volatile Organic Compounds (GC/MS) by Method 8260B Result Qualifier MDL RDL Dilution Analysis Batch Analyte mg/l mg/l mg/l date / time Benzene U 0.0000941 0.00100 1 11/08/2023 17:34 WG2167086 Toluene U 0.000278 0.00100 1 11/08/2023 17:34 WG2167086 Ethylbenzene U 0.000137 0.00100 1 11/08/2023 17:34 WG2167086 Total Xylenes U 0.000174 0.00300 1 11/08/2023 17:34 WG2167086 Methyl tert-butyl ether U 0.000101 0.00100 1 11/08/2023 17:34 WG2167086 1,2-Dichloroethane U 0.0000819 0.00100 1 11/08/2023 17:34 WG2167086 1,2-Dibromoethane U 0.000126 0.00100 1 11/08/2023 17:34 WG2167086 Naphthalene U 0.00100 0.00500 1 11/08/2023 17:34 WG2167086 (S) Toluene-d8 99.2 80.0-120 11/08/2023 17:34 WG2167086 (S) 4-Bromofluorobenzene 105 77.0-126 11/08/2023 17:34 WG2167086 (S) 1,2-Dichloroethane-d4 106 70.0-130 11/08/2023 17:34 WG2167086 Semi-Volatile Organic Compounds (GC) by Method 8015D Result Qualifier MDL RDL Dilution Analysis Batch Analyte mg/l mg/l mg/l date / time C10-C28 Diesel Range 0.474 0.0222 0.100 1 11/07/2023 15:03 WG2164389 C28-C40 Oil Range 0.289 B 0.0118 0.100 1 11/07/2023 15:03 WG2164389 (S) o-Terphenyl 109 52.0-156 11/07/2023 15:03 WG2164389 Semi-Volatile Organic Compounds (GC) by Method 8015-SGT Result Qualifier MDL RDL Dilution Analysis Batch Analyte mg/l mg/l mg/l date / time C10-C28 Diesel Range 0.160 B 0.0222 0.100 1 11/08/2023 00:01 WG2164390 C28-C40 Oil Range U 0.0118 0.100 1 11/08/2023 00:01 WG2164390 (S) o-Terphenyl 89.5 52.0-156 11/08/2023 00:01 WG2164390 1 Cp 2 Tc 3 Ss 4 Cn 5 Sr 6 Qc 7 Gl 8 Al 9 Sc ACCOUNT:PROJECT:SDG:DATE/TIME:PAGE: Arcadis - Chevron - UT 30064298 07.21 L1673884 11/22/23 11:14 12 of 27 ACCOUNT:PROJECT:SDG:DATE/TIME:PAGE: Arcadis - Chevron - UT 30064298 07.21 L1673884 11/22/23 15:48 12 of 27 SAMPLE RESULTS - 08 L1673884 MW-12-W-231102 Collected date/time: 11/02/23 16:05 Wet Chemistry by Method 1664A Result Qualifier MDL RDL Dilution Analysis Batch Analyte mg/l mg/l mg/l date / time Oil & Grease (Hexane Extr)U 1.29 5.56 1 11/08/2023 02:36 WG2166514 Wet Chemistry by Method 9060A Result Qualifier MDL RDL Dilution Analysis Batch Analyte mg/l mg/l mg/l date / time TOC (Total Organic Carbon)5.32 0.102 1.00 1 11/21/2023 22:16 WG2175127 Volatile Organic Compounds (GC) by Method 8015D/GRO Result Qualifier MDL RDL Dilution Analysis Batch Analyte mg/l mg/l mg/l date / time TPH (GC/FID) Low Fraction 0.119 0.0314 0.100 1 11/09/2023 05:53 WG2167514 (S) a,a,a-Trifluorotoluene(FID)101 78.0-120 11/09/2023 05:53 WG2167514 Volatile Organic Compounds (GC/MS) by Method 8260B Result Qualifier MDL RDL Dilution Analysis Batch Analyte mg/l mg/l mg/l date / time Benzene 0.00154 0.0000941 0.00100 1 11/08/2023 17:53 WG2167086 Toluene U 0.000278 0.00100 1 11/08/2023 17:53 WG2167086 Ethylbenzene 0.000288 J 0.000137 0.00100 1 11/08/2023 17:53 WG2167086 Total Xylenes 0.000689 J 0.000174 0.00300 1 11/08/2023 17:53 WG2167086 Methyl tert-butyl ether U 0.000101 0.00100 1 11/08/2023 17:53 WG2167086 1,2-Dichloroethane U 0.0000819 0.00100 1 11/08/2023 17:53 WG2167086 1,2-Dibromoethane U 0.000126 0.00100 1 11/08/2023 17:53 WG2167086 Naphthalene 0.0480 0.00100 0.00500 1 11/08/2023 17:53 WG2167086 (S) Toluene-d8 100 80.0-120 11/08/2023 17:53 WG2167086 (S) 4-Bromofluorobenzene 104 77.0-126 11/08/2023 17:53 WG2167086 (S) 1,2-Dichloroethane-d4 103 70.0-130 11/08/2023 17:53 WG2167086 Semi-Volatile Organic Compounds (GC) by Method 8015D Result Qualifier MDL RDL Dilution Analysis Batch Analyte mg/l mg/l mg/l date / time C10-C28 Diesel Range 2.02 0.0222 0.100 1 11/07/2023 15:23 WG2164389 C28-C40 Oil Range 0.330 B 0.0118 0.100 1 11/07/2023 15:23 WG2164389 (S) o-Terphenyl 119 52.0-156 11/07/2023 15:23 WG2164389 Semi-Volatile Organic Compounds (GC) by Method 8015-SGT Result Qualifier MDL RDL Dilution Analysis Batch Analyte mg/l mg/l mg/l date / time C10-C28 Diesel Range 1.49 0.0222 0.100 1 11/08/2023 00:22 WG2164390 C28-C40 Oil Range U 0.0118 0.100 1 11/08/2023 00:22 WG2164390 (S) o-Terphenyl 117 52.0-156 11/08/2023 00:22 WG2164390 1 Cp 2 Tc 3 Ss 4 Cn 5 Sr 6 Qc 7 Gl 8 Al 9 Sc ACCOUNT:PROJECT:SDG:DATE/TIME:PAGE: Arcadis - Chevron - UT 30064298 07.21 L1673884 11/22/23 11:14 13 of 27 ACCOUNT:PROJECT:SDG:DATE/TIME:PAGE: Arcadis - Chevron - UT 30064298 07.21 L1673884 11/22/23 15:48 13 of 27 SAMPLE RESULTS - 09 L1673884 TRIP BLANK-231102 Collected date/time: 11/02/23 00:00 Volatile Organic Compounds (GC/MS) by Method 8260B Result Qualifier MDL RDL Dilution Analysis Batch Analyte mg/l mg/l mg/l date / time Benzene U 0.0000941 0.00100 1 11/08/2023 14:08 WG2167086 Toluene U 0.000278 0.00100 1 11/08/2023 14:08 WG2167086 Ethylbenzene U 0.000137 0.00100 1 11/08/2023 14:08 WG2167086 Total Xylenes U 0.000174 0.00300 1 11/08/2023 14:08 WG2167086 Methyl tert-butyl ether U 0.000101 0.00100 1 11/08/2023 14:08 WG2167086 1,2-Dichloroethane U 0.0000819 0.00100 1 11/08/2023 14:08 WG2167086 1,2-Dibromoethane U 0.000126 0.00100 1 11/08/2023 14:08 WG2167086 Naphthalene U 0.00100 0.00500 1 11/08/2023 14:08 WG2167086 (S) Toluene-d8 99.6 80.0-120 11/08/2023 14:08 WG2167086 (S) 4-Bromofluorobenzene 105 77.0-126 11/08/2023 14:08 WG2167086 (S) 1,2-Dichloroethane-d4 108 70.0-130 11/08/2023 14:08 WG2167086 1 Cp 2 Tc 3 Ss 4 Cn 5 Sr 6 Qc 7 Gl 8 Al 9 Sc ACCOUNT:PROJECT:SDG:DATE/TIME:PAGE: Arcadis - Chevron - UT 30064298 07.21 L1673884 11/22/23 11:14 14 of 27 ACCOUNT:PROJECT:SDG:DATE/TIME:PAGE: Arcadis - Chevron - UT 30064298 07.21 L1673884 11/22/23 15:48 14 of 27 QUALITY CONTROL SUMMARYWG2166514 Wet Chemistry by Method 1664A L1673884-01,02,03,04,05,06,07,08 Method Blank (MB) (MB) R3996815-1 11/08/23 02:36 MB Result MB Qualifier MB MDL MB RDL Analyte mg/l mg/l mg/l Oil & Grease (Hexane Extr)U 1.16 5.00 Laboratory Control Sample (LCS) • Laboratory Control Sample Duplicate (LCSD) (LCS) R3996815-2 11/08/23 02:36 • (LCSD) R3996815-3 11/08/23 02:36 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 %%%%% Oil & Grease (Hexane Extr)40.0 39.6 38.7 99.0 96.8 78.0-114 2.30 20 L1673884-01 Original Sample (OS) • Matrix Spike (MS) (OS) L1673884-01 11/08/23 02:36 • (MS) R3996815-4 11/08/23 02:36 Spike Amount Original Result MS Result MS Rec.Dilution Rec. Limits MS Qualifier Analyte mg/l mg/l mg/l %% Oil & Grease (Hexane Extr)40.0 U 37.3 93.3 1 78.0-114 1 Cp 2 Tc 3 Ss 4 Cn 5 Sr 6 Qc 7 Gl 8 Al 9 Sc ACCOUNT:PROJECT:SDG:DATE/TIME:PAGE: Arcadis - Chevron - UT 30064298 07.21 L1673884 11/22/23 11:14 15 of 27 ACCOUNT:PROJECT:SDG:DATE/TIME:PAGE: Arcadis - Chevron - UT 30064298 07.21 L1673884 11/22/23 15:48 15 of 27 QUALITY CONTROL SUMMARYWG2174451 Wet Chemistry by Method 9060A L1673884-01,02 Method Blank (MB) (MB) R4002993-2 11/21/23 02:44 MB Result MB Qualifier MB MDL MB RDL Analyte mg/l mg/l mg/l TOC (Total Organic Carbon)0.132 J 0.102 1.00 L1673884-01 Original Sample (OS) • Duplicate (DUP) (OS) L1673884-01 11/21/23 02:58 • (DUP) R4002993-3 11/21/23 03:12 Original Result DUP Result Dilution DUP RPD DUP Qualifier DUP RPD Limits Analyte mg/l mg/l %% TOC (Total Organic Carbon)2.23 2.21 1 1.17 20 L1674126-06 Original Sample (OS) • Duplicate (DUP) (OS) L1674126-06 11/21/23 14:12 • (DUP) R4002993-8 11/21/23 14:35 Original Result DUP Result Dilution DUP RPD DUP Qualifier DUP RPD Limits Analyte mg/l mg/l %% TOC (Total Organic Carbon)65.2 63.6 2 2.59 20 Laboratory Control Sample (LCS) (LCS) R4002993-1 11/21/23 02:33 Spike Amount LCS Result LCS Rec.Rec. Limits LCS Qualifier Analyte mg/l mg/l %% TOC (Total Organic Carbon)25.0 24.5 97.9 85.0-115 L1673884-02 Original Sample (OS) • Matrix Spike (MS) • Matrix Spike Duplicate (MSD) (OS) L1673884-02 11/21/23 03:27 • (MS) R4002993-4 11/21/23 03:48 • (MSD) R4002993-5 11/21/23 04:10 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 %%%%% TOC (Total Organic Carbon)25.0 3.13 27.8 27.9 98.5 99.1 1 85.0-115 0.539 20 L1674126-04 Original Sample (OS) • Matrix Spike (MS) (OS) L1674126-04 11/21/23 06:59 • (MS) R4002993-6 11/21/23 07:25 Spike Amount Original Result MS Result MS Rec.Dilution Rec. Limits MS Qualifier Analyte mg/l mg/l mg/l %% TOC (Total Organic Carbon)25.0 17.1 39.3 88.8 1 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: Arcadis - Chevron - UT 30064298 07.21 L1673884 11/22/23 11:14 16 of 27 ACCOUNT:PROJECT:SDG:DATE/TIME:PAGE: Arcadis - Chevron - UT 30064298 07.21 L1673884 11/22/23 15:48 16 of 27 QUALITY CONTROL SUMMARYWG2175127 Wet Chemistry by Method 9060A L1673884-03,04,05,06,07,08 Method Blank (MB) (MB) R4003292-2 11/21/23 18:38 MB Result MB Qualifier MB MDL MB RDL Analyte mg/l mg/l mg/l TOC (Total Organic Carbon)0.167 J 0.102 1.00 L1673884-05 Original Sample (OS) • Duplicate (DUP) (OS) L1673884-05 11/21/23 19:54 • (DUP) R4003292-3 11/21/23 20:09 Original Result DUP Result Dilution DUP RPD DUP Qualifier DUP RPD Limits Analyte mg/l mg/l %% TOC (Total Organic Carbon)4.40 4.14 1 6.16 20 L1673953-01 Original Sample (OS) • Duplicate (DUP) (OS) L1673953-01 11/21/23 22:37 • (DUP) R4003292-6 11/21/23 22:58 Original Result DUP Result Dilution DUP RPD DUP Qualifier DUP RPD Limits Analyte mg/l mg/l %% TOC (Total Organic Carbon)8.57 8.33 1 2.76 20 Laboratory Control Sample (LCS) (LCS) R4003292-1 11/21/23 18:26 Spike Amount LCS Result LCS Rec.Rec. Limits LCS Qualifier Analyte mg/l mg/l %% TOC (Total Organic Carbon)25.0 24.1 96.3 85.0-115 L1673884-06 Original Sample (OS) • Matrix Spike (MS) • Matrix Spike Duplicate (MSD) (OS) L1673884-06 11/21/23 20:25 • (MS) R4003292-4 11/21/23 20:47 • (MSD) R4003292-5 11/21/23 21:09 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 %%%%% TOC (Total Organic Carbon)25.0 4.53 28.9 28.8 97.3 96.9 1 85.0-115 0.278 20 L1673953-04 Original Sample (OS) • Matrix Spike (MS) • Matrix Spike Duplicate (MSD) (OS) L1673953-04 11/21/23 23:41 • (MS) R4003292-7 11/22/23 00:02 • (MSD) R4003292-8 11/22/23 00:22 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 %%%%% TOC (Total Organic Carbon)25.0 0.181 24.3 24.3 96.6 96.6 1 85.0-115 0.0411 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: Arcadis - Chevron - UT 30064298 07.21 L1673884 11/22/23 11:14 17 of 27 ACCOUNT:PROJECT:SDG:DATE/TIME:PAGE: Arcadis - Chevron - UT 30064298 07.21 L1673884 11/22/23 15:48 17 of 27 QUALITY CONTROL SUMMARYWG2167514 Volatile Organic Compounds (GC) by Method 8015D/GRO L1673884-02,03,04,05,06,07,08 Method Blank (MB) (MB) R3999262-2 11/09/23 02:35 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)104 78.0-120 Laboratory Control Sample (LCS) (LCS) R3999262-1 11/09/23 00:40 Spike Amount LCS Result LCS Rec.Rec. Limits LCS Qualifier Analyte mg/l mg/l %% TPH (GC/FID) Low Fraction 5.50 5.06 92.0 72.0-127 (S) a,a,a-Trifluorotoluene(FID) 105 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: Arcadis - Chevron - UT 30064298 07.21 L1673884 11/22/23 11:14 18 of 27 ACCOUNT:PROJECT:SDG:DATE/TIME:PAGE: Arcadis - Chevron - UT 30064298 07.21 L1673884 11/22/23 15:48 18 of 27 QUALITY CONTROL SUMMARYWG2170508 Volatile Organic Compounds (GC) by Method 8015D/GRO L1673884-01 Method Blank (MB) (MB) R3999540-2 11/13/23 23:31 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)104 78.0-120 Laboratory Control Sample (LCS) (LCS) R3999540-1 11/13/23 22:33 Spike Amount LCS Result LCS Rec.Rec. Limits LCS Qualifier Analyte mg/l mg/l %% TPH (GC/FID) Low Fraction 5.50 4.76 86.5 72.0-127 (S) a,a,a-Trifluorotoluene(FID) 103 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: Arcadis - Chevron - UT 30064298 07.21 L1673884 11/22/23 11:14 19 of 27 ACCOUNT:PROJECT:SDG:DATE/TIME:PAGE: Arcadis - Chevron - UT 30064298 07.21 L1673884 11/22/23 15:48 19 of 27 QUALITY CONTROL SUMMARYWG2167086 Volatile Organic Compounds (GC/MS) by Method 8260B L1673884-01,02,03,04,05,06,07,08,09 Method Blank (MB) (MB) R3997920-3 11/08/23 13:09 MB Result MB Qualifier MB MDL MB RDL Analyte mg/l mg/l mg/l Benzene U 0.0000941 0.00100 Toluene U 0.000278 0.00100 Ethylbenzene U 0.000137 0.00100 Total Xylenes U 0.000174 0.00300 Methyl tert-butyl ether U 0.000101 0.00100 1,2-Dichloroethane U 0.0000819 0.00100 1,2-Dibromoethane U 0.000126 0.00100 Naphthalene U 0.00100 0.00500 (S) Toluene-d8 102 80.0-120 (S) 4-Bromofluorobenzene 106 77.0-126 (S) 1,2-Dichloroethane-d4 101 70.0-130 Laboratory Control Sample (LCS) • Laboratory Control Sample Duplicate (LCSD) (LCS) R3997920-1 11/08/23 11:55 • (LCSD) R3997920-2 11/08/23 12:13 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 %%%%% Benzene 0.00500 0.00470 0.00496 94.0 99.2 70.0-123 5.38 20 Toluene 0.00500 0.00455 0.00487 91.0 97.4 79.0-120 6.79 20 Ethylbenzene 0.00500 0.00516 0.00525 103 105 79.0-123 1.73 20 Total Xylenes 0.0150 0.0141 0.0151 94.0 101 79.0-123 6.85 20 Methyl tert-butyl ether 0.00500 0.00496 0.00486 99.2 97.2 68.0-125 2.04 20 1,2-Dichloroethane 0.00500 0.00425 0.00506 85.0 101 70.0-128 17.4 20 1,2-Dibromoethane 0.00500 0.00471 0.00502 94.2 100 80.0-122 6.37 20 Naphthalene 0.00500 0.00550 0.00484 110 96.8 54.0-135 12.8 20 (S) Toluene-d8 101 102 80.0-120 (S) 4-Bromofluorobenzene 108 107 77.0-126 (S) 1,2-Dichloroethane-d4 104 103 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: Arcadis - Chevron - UT 30064298 07.21 L1673884 11/22/23 11:14 20 of 27 ACCOUNT:PROJECT:SDG:DATE/TIME:PAGE: Arcadis - Chevron - UT 30064298 07.21 L1673884 11/22/23 15:48 20 of 27 QUALITY CONTROL SUMMARYWG2168281 Volatile Organic Compounds (GC/MS) by Method 8260B L1673884-02 Method Blank (MB) (MB) R3998606-2 11/10/23 01:19 MB Result MB Qualifier MB MDL MB RDL Analyte mg/l mg/l mg/l Ethylbenzene U 0.000137 0.00100 Total Xylenes U 0.000174 0.00300 Naphthalene U 0.00100 0.00500 (S) Toluene-d8 104 80.0-120 (S) 4-Bromofluorobenzene 97.1 77.0-126 (S) 1,2-Dichloroethane-d4 105 70.0-130 Laboratory Control Sample (LCS) (LCS) R3998606-1 11/10/23 00:13 Spike Amount LCS Result LCS Rec.Rec. Limits LCS Qualifier Analyte mg/l mg/l %% Ethylbenzene 0.00500 0.00447 89.4 79.0-123 Total Xylenes 0.0150 0.0130 86.7 79.0-123 Naphthalene 0.00500 0.00421 84.2 54.0-135 (S) Toluene-d8 104 80.0-120 (S) 4-Bromofluorobenzene 97.3 77.0-126 (S) 1,2-Dichloroethane-d4 105 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: Arcadis - Chevron - UT 30064298 07.21 L1673884 11/22/23 11:14 21 of 27 ACCOUNT:PROJECT:SDG:DATE/TIME:PAGE: Arcadis - Chevron - UT 30064298 07.21 L1673884 11/22/23 15:48 21 of 27 QUALITY CONTROL SUMMARYWG2164389 Semi-Volatile Organic Compounds (GC) by Method 8015D L1673884-01,02,03,04,05,06,07,08 Method Blank (MB) (MB) R3996809-1 11/07/23 08:20 MB Result MB Qualifier MB MDL MB RDL Analyte mg/l mg/l mg/l C10-C28 Diesel Range 0.0419 J 0.0222 0.100 C28-C40 Oil Range 0.0380 J 0.0118 0.100 (S) o-Terphenyl 111 52.0-156 Laboratory Control Sample (LCS) • Laboratory Control Sample Duplicate (LCSD) (LCS) R3996809-2 11/07/23 08:40 • (LCSD) R3996809-3 11/07/23 09:01 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 1.52 1.52 101 101 50.0-150 0.000 20 (S) o-Terphenyl 106 102 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: Arcadis - Chevron - UT 30064298 07.21 L1673884 11/22/23 11:14 22 of 27 ACCOUNT:PROJECT:SDG:DATE/TIME:PAGE: Arcadis - Chevron - UT 30064298 07.21 L1673884 11/22/23 15:48 22 of 27 QUALITY CONTROL SUMMARYWG2164390 Semi-Volatile Organic Compounds (GC) by Method 8015-SGT L1673884-01,02,03,04,05,06,07,08 Method Blank (MB) (MB) R3997689-1 11/07/23 18:42 MB Result MB Qualifier MB MDL MB RDL Analyte mg/l mg/l mg/l C10-C28 Diesel Range 0.0512 J 0.0222 0.100 C28-C40 Oil Range 0.0666 J 0.0118 0.100 (S) o-Terphenyl 98.0 52.0-156 Laboratory Control Sample (LCS) • Laboratory Control Sample Duplicate (LCSD) (LCS) R3997689-2 11/07/23 19:02 • (LCSD) R3997689-3 11/07/23 19:22 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 1.52 1.50 101 100 50.0-150 1.32 20 (S) o-Terphenyl 100 93.0 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: Arcadis - Chevron - UT 30064298 07.21 L1673884 11/22/23 11:14 23 of 27 ACCOUNT:PROJECT:SDG:DATE/TIME:PAGE: Arcadis - Chevron - UT 30064298 07.21 L1673884 11/22/23 15:48 23 of 27 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. 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. J The identification of the analyte is acceptable; the reported value is an estimate. 1 Cp 2 Tc 3 Ss 4 Cn 5 Sr 6 Qc 7 Gl 8 Al 9 Sc ACCOUNT:PROJECT:SDG:DATE/TIME:PAGE: Arcadis - Chevron - UT 30064298 07.21 L1673884 11/22/23 11:14 24 of 27 ACCOUNT:PROJECT:SDG:DATE/TIME:PAGE: Arcadis - Chevron - UT 30064298 07.21 L1673884 11/22/23 15:48 24 of 27 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: Arcadis - Chevron - UT 30064298 07.21 L1673884 11/22/23 11:14 25 of 27 ACCOUNT:PROJECT:SDG:DATE/TIME:PAGE: Arcadis - Chevron - UT 30064298 07.21 L1673884 11/22/23 15:48 25 of 27 ANALYTICAL REPORT November 22, 2023 Arcadis - Chevron - UT Sample Delivery Group:L1673953 Samples Received:11/04/2023 Project Number:30064298 07.21 Description:377352 Site:1917 WEST 1700 SOUTH, SLC Report To:Carissa Mason 10 Exchange Place Suite 112 Salt Lake City, UT 84111 Entire Report Reviewed By: November 22, 2023 [Preliminary Report] Brian Ford 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: Arcadis - Chevron - UT 30064298 07.21 L1673953 11/22/23 12:54 1 of 17 November 22, 2023 Brian Ford Project Manager ACCOUNT:PROJECT:SDG:DATE/TIME:PAGE: Arcadis - Chevron - UT 30064298 07.21 L1673953 11/22/23 15:18 1 of 17 TABLE OF CONTENTS Cp: Cover Page 1 Tc: Table of Contents 2 Ss: Sample Summary 3 Cn: Case Narrative 4 Sr: Sample Results 5 MW-8-W-231103 L1673953-01 5 MW-7-W-231103 L1673953-02 6 MW-5-W-231103 L1673953-03 7 EB-4-231103 L1673953-04 8 Qc: Quality Control Summary 9 Wet Chemistry by Method 1664A 9 Wet Chemistry by Method 9060A 10 Volatile Organic Compounds (GC) by Method 8015D/GRO 11 Volatile Organic Compounds (GC/MS) by Method 8260B 12 Semi-Volatile Organic Compounds (GC) by Method 8015D 14 Gl: Glossary of Terms 15 Al: Accreditations & Locations 16 Sc: Sample Chain of Custody 17 1 Cp 2 Tc 3 Ss 4 Cn 5 Sr 6 Qc 7 Gl 8 Al 9 Sc ACCOUNT:PROJECT:SDG:DATE/TIME:PAGE: Arcadis - Chevron - UT 30064298 07.21 L1673953 11/22/23 12:54 2 of 17 ACCOUNT:PROJECT:SDG:DATE/TIME:PAGE: Arcadis - Chevron - UT 30064298 07.21 L1673953 11/22/23 15:18 2 of 17 SAMPLE SUMMARY Collected by Collected date/time Received date/time MW-8-W-231103 L1673953-01 GW Bridger Cherry 11/03/23 08:55 11/04/23 09:00 Method Batch Dilution Preparation Analysis Analyst Location date/time date/time Wet Chemistry by Method 1664A WG2166514 1 11/07/23 18:05 11/08/23 02:36 AIW Mt. Juliet, TN Wet Chemistry by Method 9060A WG2175127 1 11/21/23 22:37 11/21/23 22:37 DMA Mt. Juliet, TN Volatile Organic Compounds (GC) by Method 8015D/GRO WG2167514 1 11/09/23 06:15 11/09/23 06:15 JHH Mt. Juliet, TN Volatile Organic Compounds (GC/MS) by Method 8260B WG2167086 1 11/08/23 18:11 11/08/23 18:11 JBE Mt. Juliet, TN Semi-Volatile Organic Compounds (GC) by Method 8015D WG2166699 1 11/08/23 07:57 11/09/23 05:58 MAA Mt. Juliet, TN Collected by Collected date/time Received date/time MW-7-W-231103 L1673953-02 GW Bridger Cherry 11/03/23 10:30 11/04/23 09:00 Method Batch Dilution Preparation Analysis Analyst Location date/time date/time Wet Chemistry by Method 1664A WG2166514 1 11/07/23 18:05 11/08/23 02:36 AIW Mt. Juliet, TN Wet Chemistry by Method 9060A WG2175127 1 11/21/23 23:13 11/21/23 23:13 DMA Mt. Juliet, TN Volatile Organic Compounds (GC) by Method 8015D/GRO WG2167514 1 11/09/23 06:37 11/09/23 06:37 JHH Mt. Juliet, TN Volatile Organic Compounds (GC/MS) by Method 8260B WG2167086 1 11/08/23 18:32 11/08/23 18:32 JBE Mt. Juliet, TN Semi-Volatile Organic Compounds (GC) by Method 8015D WG2166699 1 11/08/23 07:57 11/09/23 13:15 MAA Mt. Juliet, TN Collected by Collected date/time Received date/time MW-5-W-231103 L1673953-03 GW Bridger Cherry 11/03/23 11:45 11/04/23 09:00 Method Batch Dilution Preparation Analysis Analyst Location date/time date/time Wet Chemistry by Method 1664A WG2166514 1 11/07/23 18:05 11/08/23 02:36 AIW Mt. Juliet, TN Wet Chemistry by Method 9060A WG2175127 1 11/21/23 23:29 11/21/23 23:29 DMA Mt. Juliet, TN Volatile Organic Compounds (GC) by Method 8015D/GRO WG2167514 1 11/09/23 06:59 11/09/23 06:59 JHH Mt. Juliet, TN Volatile Organic Compounds (GC/MS) by Method 8260B WG2167703 1 11/09/23 11:43 11/09/23 11:43 JCP Mt. Juliet, TN Semi-Volatile Organic Compounds (GC) by Method 8015D WG2166699 1 11/08/23 07:57 11/09/23 13:36 MAA Mt. Juliet, TN Collected by Collected date/time Received date/time EB-4-231103 L1673953-04 GW Bridger Cherry 11/03/23 12:45 11/04/23 09:00 Method Batch Dilution Preparation Analysis Analyst Location date/time date/time Wet Chemistry by Method 1664A WG2166514 1 11/07/23 18:05 11/08/23 02:36 AIW Mt. Juliet, TN Wet Chemistry by Method 9060A WG2175127 1 11/21/23 23:41 11/21/23 23:41 DMA Mt. Juliet, TN Volatile Organic Compounds (GC) by Method 8015D/GRO WG2167514 1 11/09/23 03:19 11/09/23 03:19 JHH Mt. Juliet, TN Volatile Organic Compounds (GC/MS) by Method 8260B WG2167703 1 11/09/23 12:04 11/09/23 12:04 JCP Mt. Juliet, TN Semi-Volatile Organic Compounds (GC) by Method 8015D WG2166699 1 11/08/23 07:57 11/09/23 13:56 MAA 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: Arcadis - Chevron - UT 30064298 07.21 L1673953 11/22/23 12:54 3 of 17 ACCOUNT:PROJECT:SDG:DATE/TIME:PAGE: Arcadis - Chevron - UT 30064298 07.21 L1673953 11/22/23 15:18 3 of 17 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] Brian Ford Project Manager Sample Delivery Group (SDG) Narrative pH outside of method requirement. Lab Sample ID Project Sample ID Method L1673953-01 MW-8-W-231103 8015D 1 Cp 2 Tc 3 Ss 4 Cn 5 Sr 6 Qc 7 Gl 8 Al 9 Sc ACCOUNT:PROJECT:SDG:DATE/TIME:PAGE: Arcadis - Chevron - UT 30064298 07.21 L1673953 11/22/23 12:54 4 of 17 Brian Ford Project Manager ACCOUNT:PROJECT:SDG:DATE/TIME:PAGE: Arcadis - Chevron - UT 30064298 07.21 L1673953 11/22/23 15:18 4 of 17 SAMPLE RESULTS - 01 L1673953 MW-8-W-231103 Collected date/time: 11/03/23 08:55 Wet Chemistry by Method 1664A Result Qualifier MDL RDL Dilution Analysis Batch Analyte mg/l mg/l mg/l date / time Oil & Grease (Hexane Extr)U 1.29 5.56 1 11/08/2023 02:36 WG2166514 Wet Chemistry by Method 9060A Result Qualifier MDL RDL Dilution Analysis Batch Analyte mg/l mg/l mg/l date / time TOC (Total Organic Carbon)8.57 0.102 1.00 1 11/21/2023 22:37 WG2175127 Volatile Organic Compounds (GC) by Method 8015D/GRO Result Qualifier MDL RDL Dilution Analysis Batch Analyte mg/l mg/l mg/l date / time TPH (GC/FID) Low Fraction 0.100 J 0.0314 0.100 1 11/09/2023 06:15 WG2167514 (S) a,a,a-Trifluorotoluene(FID)101 78.0-120 11/09/2023 06:15 WG2167514 Volatile Organic Compounds (GC/MS) by Method 8260B Result Qualifier MDL RDL Dilution Analysis Batch Analyte mg/l mg/l mg/l date / time Benzene 0.00121 0.0000941 0.00100 1 11/08/2023 18:11 WG2167086 Toluene U 0.000278 0.00100 1 11/08/2023 18:11 WG2167086 Ethylbenzene 0.00274 0.000137 0.00100 1 11/08/2023 18:11 WG2167086 Total Xylenes 0.000204 J 0.000174 0.00300 1 11/08/2023 18:11 WG2167086 Methyl tert-butyl ether U 0.000101 0.00100 1 11/08/2023 18:11 WG2167086 1,2-Dichloroethane U 0.0000819 0.00100 1 11/08/2023 18:11 WG2167086 1,2-Dibromoethane U 0.000126 0.00100 1 11/08/2023 18:11 WG2167086 Naphthalene 0.0161 0.00100 0.00500 1 11/08/2023 18:11 WG2167086 (S) Toluene-d8 103 80.0-120 11/08/2023 18:11 WG2167086 (S) 4-Bromofluorobenzene 103 77.0-126 11/08/2023 18:11 WG2167086 (S) 1,2-Dichloroethane-d4 105 70.0-130 11/08/2023 18:11 WG2167086 Semi-Volatile Organic Compounds (GC) by Method 8015D Result Qualifier MDL RDL Dilution Analysis Batch Analyte mg/l mg/l mg/l date / time C10-C28 Diesel Range 2.35 0.0222 0.100 1 11/09/2023 05:58 WG2166699 C28-C40 Oil Range 0.557 0.0118 0.100 1 11/09/2023 05:58 WG2166699 (S) o-Terphenyl 111 52.0-156 11/09/2023 05:58 WG2166699 1 Cp 2 Tc 3 Ss 4 Cn 5 Sr 6 Qc 7 Gl 8 Al 9 Sc ACCOUNT:PROJECT:SDG:DATE/TIME:PAGE: Arcadis - Chevron - UT 30064298 07.21 L1673953 11/22/23 12:54 5 of 17 ACCOUNT:PROJECT:SDG:DATE/TIME:PAGE: Arcadis - Chevron - UT 30064298 07.21 L1673953 11/22/23 15:18 5 of 17 SAMPLE RESULTS - 02 L1673953 MW-7-W-231103 Collected date/time: 11/03/23 10:30 Wet Chemistry by Method 1664A Result Qualifier MDL RDL Dilution Analysis Batch Analyte mg/l mg/l mg/l date / time Oil & Grease (Hexane Extr)U 1.45 6.25 1 11/08/2023 02:36 WG2166514 Wet Chemistry by Method 9060A Result Qualifier MDL RDL Dilution Analysis Batch Analyte mg/l mg/l mg/l date / time TOC (Total Organic Carbon)3.35 0.102 1.00 1 11/21/2023 23:13 WG2175127 Volatile Organic Compounds (GC) by Method 8015D/GRO Result Qualifier MDL RDL Dilution Analysis Batch Analyte mg/l mg/l mg/l date / time TPH (GC/FID) Low Fraction 0.0901 J 0.0314 0.100 1 11/09/2023 06:37 WG2167514 (S) a,a,a-Trifluorotoluene(FID)103 78.0-120 11/09/2023 06:37 WG2167514 Volatile Organic Compounds (GC/MS) by Method 8260B Result Qualifier MDL RDL Dilution Analysis Batch Analyte mg/l mg/l mg/l date / time Benzene U 0.0000941 0.00100 1 11/08/2023 18:32 WG2167086 Toluene U 0.000278 0.00100 1 11/08/2023 18:32 WG2167086 Ethylbenzene U 0.000137 0.00100 1 11/08/2023 18:32 WG2167086 Total Xylenes U 0.000174 0.00300 1 11/08/2023 18:32 WG2167086 Methyl tert-butyl ether U 0.000101 0.00100 1 11/08/2023 18:32 WG2167086 1,2-Dichloroethane U 0.0000819 0.00100 1 11/08/2023 18:32 WG2167086 1,2-Dibromoethane U 0.000126 0.00100 1 11/08/2023 18:32 WG2167086 Naphthalene 0.00122 J 0.00100 0.00500 1 11/08/2023 18:32 WG2167086 (S) Toluene-d8 99.6 80.0-120 11/08/2023 18:32 WG2167086 (S) 4-Bromofluorobenzene 103 77.0-126 11/08/2023 18:32 WG2167086 (S) 1,2-Dichloroethane-d4 103 70.0-130 11/08/2023 18:32 WG2167086 Semi-Volatile Organic Compounds (GC) by Method 8015D Result Qualifier MDL RDL Dilution Analysis Batch Analyte mg/l mg/l mg/l date / time C10-C28 Diesel Range 0.157 0.0222 0.100 1 11/09/2023 13:15 WG2166699 C28-C40 Oil Range 0.0879 J 0.0118 0.100 1 11/09/2023 13:15 WG2166699 (S) o-Terphenyl 124 52.0-156 11/09/2023 13:15 WG2166699 1 Cp 2 Tc 3 Ss 4 Cn 5 Sr 6 Qc 7 Gl 8 Al 9 Sc ACCOUNT:PROJECT:SDG:DATE/TIME:PAGE: Arcadis - Chevron - UT 30064298 07.21 L1673953 11/22/23 12:54 6 of 17 ACCOUNT:PROJECT:SDG:DATE/TIME:PAGE: Arcadis - Chevron - UT 30064298 07.21 L1673953 11/22/23 15:18 6 of 17 SAMPLE RESULTS - 03 L1673953 MW-5-W-231103 Collected date/time: 11/03/23 11:45 Wet Chemistry by Method 1664A Result Qualifier MDL RDL Dilution Analysis Batch Analyte mg/l mg/l mg/l date / time Oil & Grease (Hexane Extr)U 1.35 5.81 1 11/08/2023 02:36 WG2166514 Wet Chemistry by Method 9060A Result Qualifier MDL RDL Dilution Analysis Batch Analyte mg/l mg/l mg/l date / time TOC (Total Organic Carbon)4.56 0.102 1.00 1 11/21/2023 23:29 WG2175127 Volatile Organic Compounds (GC) by Method 8015D/GRO Result Qualifier MDL RDL Dilution Analysis Batch Analyte mg/l mg/l mg/l date / time TPH (GC/FID) Low Fraction 1.57 0.0314 0.100 1 11/09/2023 06:59 WG2167514 (S) a,a,a-Trifluorotoluene(FID)99.6 78.0-120 11/09/2023 06:59 WG2167514 Volatile Organic Compounds (GC/MS) by Method 8260B Result Qualifier MDL RDL Dilution Analysis Batch Analyte mg/l mg/l mg/l date / time Benzene 0.000487 J 0.0000941 0.00100 1 11/09/2023 11:43 WG2167703 Toluene 0.000413 J 0.000278 0.00100 1 11/09/2023 11:43 WG2167703 Ethylbenzene 0.0174 0.000137 0.00100 1 11/09/2023 11:43 WG2167703 Total Xylenes 0.00198 J 0.000174 0.00300 1 11/09/2023 11:43 WG2167703 Methyl tert-butyl ether U 0.000101 0.00100 1 11/09/2023 11:43 WG2167703 1,2-Dichloroethane U 0.0000819 0.00100 1 11/09/2023 11:43 WG2167703 1,2-Dibromoethane U 0.000126 0.00100 1 11/09/2023 11:43 WG2167703 Naphthalene 0.00728 0.00100 0.00500 1 11/09/2023 11:43 WG2167703 (S) Toluene-d8 88.9 80.0-120 11/09/2023 11:43 WG2167703 (S) 4-Bromofluorobenzene 89.3 77.0-126 11/09/2023 11:43 WG2167703 (S) 1,2-Dichloroethane-d4 119 70.0-130 11/09/2023 11:43 WG2167703 Semi-Volatile Organic Compounds (GC) by Method 8015D Result Qualifier MDL RDL Dilution Analysis Batch Analyte mg/l mg/l mg/l date / time C10-C28 Diesel Range 0.625 0.0222 0.100 1 11/09/2023 13:36 WG2166699 C28-C40 Oil Range 0.131 0.0118 0.100 1 11/09/2023 13:36 WG2166699 (S) o-Terphenyl 127 52.0-156 11/09/2023 13:36 WG2166699 1 Cp 2 Tc 3 Ss 4 Cn 5 Sr 6 Qc 7 Gl 8 Al 9 Sc ACCOUNT:PROJECT:SDG:DATE/TIME:PAGE: Arcadis - Chevron - UT 30064298 07.21 L1673953 11/22/23 12:54 7 of 17 ACCOUNT:PROJECT:SDG:DATE/TIME:PAGE: Arcadis - Chevron - UT 30064298 07.21 L1673953 11/22/23 15:18 7 of 17 SAMPLE RESULTS - 04 L1673953 EB-4-231103 Collected date/time: 11/03/23 12:45 Wet Chemistry by Method 1664A Result Qualifier MDL RDL Dilution Analysis Batch Analyte mg/l mg/l mg/l date / time Oil & Grease (Hexane Extr)U 1.35 5.81 1 11/08/2023 02:36 WG2166514 Wet Chemistry by Method 9060A Result Qualifier MDL RDL Dilution Analysis Batch Analyte mg/l mg/l mg/l date / time TOC (Total Organic Carbon)0.181 B J 0.102 1.00 1 11/21/2023 23:41 WG2175127 Volatile Organic Compounds (GC) by Method 8015D/GRO Result Qualifier MDL RDL Dilution Analysis Batch Analyte mg/l mg/l mg/l date / time TPH (GC/FID) Low Fraction 0.0348 J 0.0314 0.100 1 11/09/2023 03:19 WG2167514 (S) a,a,a-Trifluorotoluene(FID)103 78.0-120 11/09/2023 03:19 WG2167514 Volatile Organic Compounds (GC/MS) by Method 8260B Result Qualifier MDL RDL Dilution Analysis Batch Analyte mg/l mg/l mg/l date / time Benzene U 0.0000941 0.00100 1 11/09/2023 12:04 WG2167703 Toluene U 0.000278 0.00100 1 11/09/2023 12:04 WG2167703 Ethylbenzene U 0.000137 0.00100 1 11/09/2023 12:04 WG2167703 Total Xylenes U 0.000174 0.00300 1 11/09/2023 12:04 WG2167703 Methyl tert-butyl ether U 0.000101 0.00100 1 11/09/2023 12:04 WG2167703 1,2-Dichloroethane U 0.0000819 0.00100 1 11/09/2023 12:04 WG2167703 1,2-Dibromoethane U 0.000126 0.00100 1 11/09/2023 12:04 WG2167703 Naphthalene U 0.00100 0.00500 1 11/09/2023 12:04 WG2167703 (S) Toluene-d8 97.6 80.0-120 11/09/2023 12:04 WG2167703 (S) 4-Bromofluorobenzene 95.4 77.0-126 11/09/2023 12:04 WG2167703 (S) 1,2-Dichloroethane-d4 111 70.0-130 11/09/2023 12:04 WG2167703 Semi-Volatile Organic Compounds (GC) by Method 8015D Result Qualifier MDL RDL Dilution Analysis Batch Analyte mg/l mg/l mg/l date / time C10-C28 Diesel Range 0.0435 J 0.0222 0.100 1 11/09/2023 13:56 WG2166699 C28-C40 Oil Range 0.0399 J 0.0118 0.100 1 11/09/2023 13:56 WG2166699 (S) o-Terphenyl 125 52.0-156 11/09/2023 13:56 WG2166699 1 Cp 2 Tc 3 Ss 4 Cn 5 Sr 6 Qc 7 Gl 8 Al 9 Sc ACCOUNT:PROJECT:SDG:DATE/TIME:PAGE: Arcadis - Chevron - UT 30064298 07.21 L1673953 11/22/23 12:54 8 of 17 ACCOUNT:PROJECT:SDG:DATE/TIME:PAGE: Arcadis - Chevron - UT 30064298 07.21 L1673953 11/22/23 15:18 8 of 17 QUALITY CONTROL SUMMARYWG2166514 Wet Chemistry by Method 1664A L1673953-01,02,03,04 Method Blank (MB) (MB) R3996815-1 11/08/23 02:36 MB Result MB Qualifier MB MDL MB RDL Analyte mg/l mg/l mg/l Oil & Grease (Hexane Extr)U 1.16 5.00 Laboratory Control Sample (LCS) • Laboratory Control Sample Duplicate (LCSD) (LCS) R3996815-2 11/08/23 02:36 • (LCSD) R3996815-3 11/08/23 02:36 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 %%%%% Oil & Grease (Hexane Extr)40.0 39.6 38.7 99.0 96.8 78.0-114 2.30 20 L1673884-01 Original Sample (OS) • Matrix Spike (MS) (OS) L1673884-01 11/08/23 02:36 • (MS) R3996815-4 11/08/23 02:36 Spike Amount Original Result MS Result MS Rec.Dilution Rec. Limits MS Qualifier Analyte mg/l mg/l mg/l %% Oil & Grease (Hexane Extr)40.0 U 37.3 93.3 1 78.0-114 1 Cp 2 Tc 3 Ss 4 Cn 5 Sr 6 Qc 7 Gl 8 Al 9 Sc ACCOUNT:PROJECT:SDG:DATE/TIME:PAGE: Arcadis - Chevron - UT 30064298 07.21 L1673953 11/22/23 12:54 9 of 17 ACCOUNT:PROJECT:SDG:DATE/TIME:PAGE: Arcadis - Chevron - UT 30064298 07.21 L1673953 11/22/23 15:18 9 of 17 QUALITY CONTROL SUMMARYWG2175127 Wet Chemistry by Method 9060A L1673953-01,02,03,04 Method Blank (MB) (MB) R4003292-2 11/21/23 18:38 MB Result MB Qualifier MB MDL MB RDL Analyte mg/l mg/l mg/l TOC (Total Organic Carbon)0.167 J 0.102 1.00 L1673884-05 Original Sample (OS) • Duplicate (DUP) (OS) L1673884-05 11/21/23 19:54 • (DUP) R4003292-3 11/21/23 20:09 Original Result DUP Result Dilution DUP RPD DUP Qualifier DUP RPD Limits Analyte mg/l mg/l %% TOC (Total Organic Carbon)4.40 4.14 1 6.16 20 L1673953-01 Original Sample (OS) • Duplicate (DUP) (OS) L1673953-01 11/21/23 22:37 • (DUP) R4003292-6 11/21/23 22:58 Original Result DUP Result Dilution DUP RPD DUP Qualifier DUP RPD Limits Analyte mg/l mg/l %% TOC (Total Organic Carbon)8.57 8.33 1 2.76 20 Laboratory Control Sample (LCS) (LCS) R4003292-1 11/21/23 18:26 Spike Amount LCS Result LCS Rec.Rec. Limits LCS Qualifier Analyte mg/l mg/l %% TOC (Total Organic Carbon)25.0 24.1 96.3 85.0-115 L1673884-06 Original Sample (OS) • Matrix Spike (MS) • Matrix Spike Duplicate (MSD) (OS) L1673884-06 11/21/23 20:25 • (MS) R4003292-4 11/21/23 20:47 • (MSD) R4003292-5 11/21/23 21:09 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 %%%%% TOC (Total Organic Carbon)25.0 4.53 28.9 28.8 97.3 96.9 1 85.0-115 0.278 20 L1673953-04 Original Sample (OS) • Matrix Spike (MS) • Matrix Spike Duplicate (MSD) (OS) L1673953-04 11/21/23 23:41 • (MS) R4003292-7 11/22/23 00:02 • (MSD) R4003292-8 11/22/23 00:22 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 %%%%% TOC (Total Organic Carbon)25.0 0.181 24.3 24.3 96.6 96.6 1 85.0-115 0.0411 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: Arcadis - Chevron - UT 30064298 07.21 L1673953 11/22/23 12:54 10 of 17 ACCOUNT:PROJECT:SDG:DATE/TIME:PAGE: Arcadis - Chevron - UT 30064298 07.21 L1673953 11/22/23 15:18 10 of 17 QUALITY CONTROL SUMMARYWG2167514 Volatile Organic Compounds (GC) by Method 8015D/GRO L1673953-01,02,03,04 Method Blank (MB) (MB) R3999262-2 11/09/23 02:35 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)104 78.0-120 Laboratory Control Sample (LCS) (LCS) R3999262-1 11/09/23 00:40 Spike Amount LCS Result LCS Rec.Rec. Limits LCS Qualifier Analyte mg/l mg/l %% TPH (GC/FID) Low Fraction 5.50 5.06 92.0 72.0-127 (S) a,a,a-Trifluorotoluene(FID) 105 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: Arcadis - Chevron - UT 30064298 07.21 L1673953 11/22/23 12:54 11 of 17 ACCOUNT:PROJECT:SDG:DATE/TIME:PAGE: Arcadis - Chevron - UT 30064298 07.21 L1673953 11/22/23 15:18 11 of 17 QUALITY CONTROL SUMMARYWG2167086 Volatile Organic Compounds (GC/MS) by Method 8260B L1673953-01,02 Method Blank (MB) (MB) R3997920-3 11/08/23 13:09 MB Result MB Qualifier MB MDL MB RDL Analyte mg/l mg/l mg/l Benzene U 0.0000941 0.00100 Toluene U 0.000278 0.00100 Ethylbenzene U 0.000137 0.00100 Total Xylenes U 0.000174 0.00300 Methyl tert-butyl ether U 0.000101 0.00100 1,2-Dichloroethane U 0.0000819 0.00100 1,2-Dibromoethane U 0.000126 0.00100 Naphthalene U 0.00100 0.00500 (S) Toluene-d8 102 80.0-120 (S) 4-Bromofluorobenzene 106 77.0-126 (S) 1,2-Dichloroethane-d4 101 70.0-130 Laboratory Control Sample (LCS) • Laboratory Control Sample Duplicate (LCSD) (LCS) R3997920-1 11/08/23 11:55 • (LCSD) R3997920-2 11/08/23 12:13 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 %%%%% Benzene 0.00500 0.00470 0.00496 94.0 99.2 70.0-123 5.38 20 Toluene 0.00500 0.00455 0.00487 91.0 97.4 79.0-120 6.79 20 Ethylbenzene 0.00500 0.00516 0.00525 103 105 79.0-123 1.73 20 Total Xylenes 0.0150 0.0141 0.0151 94.0 101 79.0-123 6.85 20 Methyl tert-butyl ether 0.00500 0.00496 0.00486 99.2 97.2 68.0-125 2.04 20 1,2-Dichloroethane 0.00500 0.00425 0.00506 85.0 101 70.0-128 17.4 20 1,2-Dibromoethane 0.00500 0.00471 0.00502 94.2 100 80.0-122 6.37 20 Naphthalene 0.00500 0.00550 0.00484 110 96.8 54.0-135 12.8 20 (S) Toluene-d8 101 102 80.0-120 (S) 4-Bromofluorobenzene 108 107 77.0-126 (S) 1,2-Dichloroethane-d4 104 103 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: Arcadis - Chevron - UT 30064298 07.21 L1673953 11/22/23 12:54 12 of 17 ACCOUNT:PROJECT:SDG:DATE/TIME:PAGE: Arcadis - Chevron - UT 30064298 07.21 L1673953 11/22/23 15:18 12 of 17 QUALITY CONTROL SUMMARYWG2167703 Volatile Organic Compounds (GC/MS) by Method 8260B L1673953-03,04 Method Blank (MB) (MB) R3999122-4 11/09/23 08:33 MB Result MB Qualifier MB MDL MB RDL Analyte mg/l mg/l mg/l Benzene U 0.0000941 0.00100 Toluene U 0.000278 0.00100 Ethylbenzene U 0.000137 0.00100 Total Xylenes U 0.000174 0.00300 Methyl tert-butyl ether U 0.000101 0.00100 1,2-Dichloroethane U 0.0000819 0.00100 1,2-Dibromoethane U 0.000126 0.00100 Naphthalene U 0.00100 0.00500 (S) Toluene-d8 99.6 80.0-120 (S) 4-Bromofluorobenzene 90.5 77.0-126 (S) 1,2-Dichloroethane-d4 113 70.0-130 Laboratory Control Sample (LCS) • Laboratory Control Sample Duplicate (LCSD) (LCS) R3999122-1 11/09/23 07:08 • (LCSD) R3999122-2 11/09/23 07:29 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 %%%%% Benzene 0.00500 0.00523 0.00504 105 101 70.0-123 3.70 20 Toluene 0.00500 0.00573 0.00537 115 107 79.0-120 6.49 20 Ethylbenzene 0.00500 0.00557 0.00558 111 112 79.0-123 0.179 20 Total Xylenes 0.0150 0.0177 0.0166 118 111 79.0-123 6.41 20 Methyl tert-butyl ether 0.00500 0.00527 0.00544 105 109 68.0-125 3.17 20 1,2-Dichloroethane 0.00500 0.00597 0.00624 119 125 70.0-128 4.42 20 1,2-Dibromoethane 0.00500 0.00582 0.00568 116 114 80.0-122 2.43 20 Naphthalene 0.00500 0.00444 0.00462 88.8 92.4 54.0-135 3.97 20 (S) Toluene-d8 96.8 92.6 80.0-120 (S) 4-Bromofluorobenzene 96.6 95.1 77.0-126 (S) 1,2-Dichloroethane-d4 111 112 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: Arcadis - Chevron - UT 30064298 07.21 L1673953 11/22/23 12:54 13 of 17 ACCOUNT:PROJECT:SDG:DATE/TIME:PAGE: Arcadis - Chevron - UT 30064298 07.21 L1673953 11/22/23 15:18 13 of 17 QUALITY CONTROL SUMMARYWG2166699 Semi-Volatile Organic Compounds (GC) by Method 8015D L1673953-01,02,03,04 Method Blank (MB) (MB) R3997974-1 11/08/23 14:08 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 72.5 52.0-156 Laboratory Control Sample (LCS) • Laboratory Control Sample Duplicate (LCSD) (LCS) R3997974-2 11/08/23 14:28 • (LCSD) R3997974-3 11/08/23 14:48 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 1.69 1.73 113 115 50.0-150 2.34 20 (S) o-Terphenyl 104 103 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: Arcadis - Chevron - UT 30064298 07.21 L1673953 11/22/23 12:54 14 of 17 ACCOUNT:PROJECT:SDG:DATE/TIME:PAGE: Arcadis - Chevron - UT 30064298 07.21 L1673953 11/22/23 15:18 14 of 17 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. 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. J The identification of the analyte is acceptable; the reported value is an estimate. 1 Cp 2 Tc 3 Ss 4 Cn 5 Sr 6 Qc 7 Gl 8 Al 9 Sc ACCOUNT:PROJECT:SDG:DATE/TIME:PAGE: Arcadis - Chevron - UT 30064298 07.21 L1673953 11/22/23 12:54 15 of 17 ACCOUNT:PROJECT:SDG:DATE/TIME:PAGE: Arcadis - Chevron - UT 30064298 07.21 L1673953 11/22/23 15:18 15 of 17 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: Arcadis - Chevron - UT 30064298 07.21 L1673953 11/22/23 12:54 16 of 17 ACCOUNT:PROJECT:SDG:DATE/TIME:PAGE: Arcadis - Chevron - UT 30064298 07.21 L1673953 11/22/23 15:18 16 of 17 Arcadis. Improving quality of life. Arcadis U.S., Inc. 2240 S. County Trail, Suite 5 East Greenwich, RI 02818 United States Phone: 401 738 3887 Fax: 401 732 1686 www.arcadis.com