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DERR-2025-000020
Stantec Consulting Services Inc. 2890 East Cottonwood Parkway Suite 300 Salt Lake City UT 84121-7283 Tel: (801) 617-3200 October 25, 2024 Ms. Leigh Anderson Utah Department of Environmental Quality Division of Environmental Response and Remediation 195 North 1950 West P.O. Box 144840 Salt Lake City, UT 84114-4840 Reference: August 2024 Sampling of Monitoring Well MW-3 Following BSS’ January 2024 Microbial Injection Program VCP Site #C052 Brown Strauss Steel Facility 800 South Chestnut Street Salt Lake City, Utah Dear Leigh: On behalf of Brown Strauss Steel (“BSS”), Stantec Consulting Services Inc. (“Stantec”) has prepared this summary letter-report to document recent August 2024 groundwater sampling and analysis efforts at the BSS facility located at 800 South Chestnut Street in Salt Lake City, Utah. As proposed within BSS/Stantec’s January 2024 Microbe Injection Summary Report (dated February 2024), and as agreed previously by the Utah Department of Environmental Quality, Division of Environmental Response and Remediation Voluntary Cleanup Program (DERR, VCP) in a letter to BSS dated April 5, 2023, Stantec collected a water sample from groundwater monitoring well MW-3 on August 9, 2024. The intent of the sampling of well MW-3 is to investigate the remedial progress of the January 2024 microbial injections at the site. As anticipated and observed following the January 2024 microbial injections, typical chlorinated constituents, such as tetrachloroethylene (PCE) and trichloroethylene (TCE) tend to degrade, under anaerobic, reduced dechlorination processes to isomer daughter, by-products, including 1,1-dichloroethane (DCA); 1,1-dichloroethene (DCE); cis/trans-1,2-DCE; and vinyl chloride. The injection of the microbes was intended to enhance the reductive dechlorination process in the uppermost aquifer in the vicinity of well MW-3, thereby helping promote ongoing, natural attenuation processes (biological degradation, dilution, dispersion, volatilization, etc.) and resultant breakdown of chlorinated contaminants. August 2024 Summary, Well MW-3 Sampling and Analysis 2 Herein is a comparison between the previous sampling event at well MW-3 of September 2022 (prior to the January 2024 microbial injections) and the most recent August 2024 sampling event (all results in micrograms per liter; aka, parts per billion-ppb): PCE TCE cis/trans-1,2-DCE 1,1-DCE 1,1-DCA Vinyl Chloride 9/22/2022 10.8 1.5 16/ < 1.0 < 1.0 < 1.0 12.7 8/9/2024 2 0.7 J 1/ 0.7 J < 1.0 < 1.0 3.1 ___________________________________________________________________________________________ DERR PRG: 5 5 none/none 7 none 2 PRG: Preliminary Remediation Goal J: estimated In summary, and as anticipated, the August 2024 sampling result indicated significant declines in contaminant (chlorinated aliphatic hydrocarbon) concentrations in the groundwater sample collected from well MW-3 in comparison to the preceding sampling event. The only constituent that exceeded its respective MCL of 2 ppb was vinyl chloride at 3.1 ppb. All other chlorinated aliphatic hydrocarbon constituent concentrations were below corollary MCLs (aka, Preliminary Remediation Goals, PRGs). The primary requisite mandated by the UDEQ for ultimate closure of the VCP site project is for BSS to sample well MW-3 on an annual basis - until all Volatile Organic Compound (VOC) constituents satisfy (at or less than) corollary US EPA and UDEQ Maximum Contaminant Level (MCL) concentrations – for three (3) consecutive years. If there are three consecutive years of annual sampling/analysis of well MW-3, where there are no MCL exceedances, then the VCP Site may be formally ‘closed’ by the UDEQ, VCP. AUGUST 9, 2024 GROUNDWATER MONITORING AND SAMPLING PROTOCOL On August 9, 2024, Stantec utilized an electronic water level meter to measure the depth to the static water level in groundwater monitoring well MW-3. Table 1 presents groundwater monitoring well construction details. Table 2 presents a summary of depths to the static water level measured in wells historically (including the August 2024 data associated with well MW-3: approximately 6.13 feet below grade). Following the water level measurement, well MW-3 was purged and sampled using a peristaltic pump and new disposable, polyethylene tubing. Average flow rates during purging were between 105 – 165 milliliters per minute (ml/min). Parameters were measured in the field during purging using an In-situ AquaTroll 500 with flow-through, sampling cell. A representative groundwater sample was collected, once the field parameters stabilized. Final field measurement data associated with pH, specific conductivity, Dissolved Oxygen (DO), temperature, turbidity, and Oxygen-Reduction Potential (ORP) are summarized in Table 3. Throughout the monitoring and sampling program, Stantec’s field personnel wore new disposable, nitrile gloves. August 2024 Summary, Well MW-3 Sampling and Analysis 3 A groundwater sample was collected from the end of the polyethylene tubing directly into laboratory-provided, sample containers. Sample containers were placed directly into a laboratory-provided, ice chest with ice. Ice bags were below and atop the sample containers. Shortly following sample collection, Stantec hand-delivered the ice chest and water sample under strict Chain-of-Custody (CoC) protocol to Chemtech-Ford Laboratories of Salt Lake City, Utah for analysis of VOCs by United States Environmental Protection Agency [US EPA] Method 8260D/5030B). GROUNDWATER ANALYTICAL RESULTS On August 9, 2024, Stantec submitted the well MW-3 water sample to ChemTech-Ford Laboratories of Salt Lake City, Utah, a Utah-certified, analytical laboratory, for analysis of VOCs by Method 8260D/5030A, including Level III quality control. A copy of the laboratory result report is presented in Appendix A herein. Historical analytical results for VOCs are presented in Table 4. In summary, only one analyte was quantified within well MW-3 in excess of its corollary MCL, as presented on Figure 3, namely: - Vinyl chloride at 3.1 ppb [with PRG: 2 ppb]. QUALITY ASSURANCE/QUALITY CONTROL All QA/QC protocol implemented during the 2024 sampling event were administered in accordance with BSS’ UDEQ-approved, May 2022 Site Management Plan, which included a Work Plan for annual groundwater sampling of well MW-3, as well as BSS’ April 2007 Proposed Site Characterization Work Plan report. In summary, the Proposed Work Plan presented BSS’s proposed approach for implementing future site characterization activities, including Standard Operating Procedures (SOPs) related to ground water sampling. The Quality Assurance Project Plan (QAPP) presented standardized means and methods (i.e., a “blueprint”) for obtaining the type and quality of environmental data needed to satisfy the DERR’s VCP. Sample Requirements, Containers, and Preservation The well MW-3 sample was collected within laboratory-provided and appropriately-preserved, sample containers as planned and approved. All sample containers were placed on ice in laboratory-provided, sample coolers immediately after collection. The sample cooler at the time of laboratory receipt was chilled with ice and the samples were delivered to the laboratory within approximately one-hour of actual sample collection. The laboratory reported a temperature of 3.3-degrees Celsius at time of sample delivery to the laboratory. Chain-of-Custody, Holding Time, and Record Keeping Chain-of-Custody (CoC), sample labeling, and record keeping procedures were in accordance with measures prescribed within BSS’s UDEQ-approved QAPP and therefore adequate for the objectives of the project. The sample remained in the secure custody of the sampler until hand- delivery to the laboratory. All extraction and holding times were met for the analyses performed. Cross-Contamination The potential for cross-contamination was mitigated by using new, disposable latex gloves; new, disposable polyethylene tubing; and new laboratory-supplied, sample containers and appropriate decontamination techniques. August 2024 Summary, Well MW-3 Sampling and Analysis 4 Field Instrumentation Quality Control An In-situ AquaTroll 500 multiparameter, water quality meter was calibrated before use. Calibration included pH, specific conductance, temperature, DO, ORP, and turbidity. Data Quality Indicators and QA/QC Samples As outlined within BSS’ May 2022 Site Management Plan, no duplicate or UDEQ spilt samples were collected as part of this sampling event, in light of several years of consistent groundwater quality data at the site. Several analytes were flagged by the laboratory as having been either estimated low due to low recovery of LCS (Laboratory Control Sample) or recoveries were outside control limits but deemed acceptable for reporting. In summary though, and when compared to similar historical water quality results, the sample results are deemed satisfactory for use in characterizing groundwater quality in the vicinity of monitoring well MW-3. The laboratories’ standard/normal Reporting Limits (RLs) for VOC analysis are less than the project PRGs. The primary contaminant of concern for this project is PCE and associated degradative isomer by-products, each of which had a RL well below its respective screening level. As a result, general sensitivity problems are not anticipated. In summary, all data appear to be valid and reflect adequate precision, accuracy, representativeness, completeness, and comparability and to be otherwise adequate for their intended use. At this time, BSS anticipates conducting the next annual sampling event at well MW-3, sometime during late-Summer 2025. If you or your colleagues have any questions, feel free to contact me at (801) 703-1927 or BSS’ Mr. Ryan Secrist at (303) 576-6213. Respectfully, Stantec Consulting Services, Inc Sr. Hydrogeologist, Environmental Risk Manager UT-Certified Professional Geologist CC: R. Secrist/BSS C. Fauth/Stantec FIGURES VCP Site #C052 Brown Strauss Steel Facility 800 South Chestnut Street Salt Lake City, Utah Project Location Client/Project Figure No. Title Utah ProjectArea Project Location 1 VCP Site C052 Brown Strauss Steel Notes 1. 2. 0 1,000 2,000 Feet Project Area X: \ U T \ C l i e n t s \ B r o w n S t r a u s s \ B r o w n S t r a u s s S t e e l _ 2 0 3 7 0 6 0 1 9 \ M X D s \ F i g u r e s \ A u g 2 0 1 4 \ F i g u r e 1 P r o j e c t L o c a t i o n . m x d R e v i s e d : 2 0 1 4 - 0 9 - 2 4 B y : j z e r b e ($$¯ DRAFT 1:24,000 (At Original document size of 8.5x11) 203706019 T11N, R12E, S05 Salt Lake County, Utah Disclaimer: Stantec assumes no responsibility for data supplied in electronic format. The recipient accepts full responsibility for verifying the accuracy and completeness of the data. The recipient releases Stantec, its officers, employees, consultants and agents, from any and all claims arising in any way from the content or provision of the data. Prepared by NF on 2014-09-15 Technical Review by ABC on 2014-01-16 Independent Review by ABC on 2014-01-16 Coordinate System: NAD 1983 UTM Zone 12N Service Layer Credits: Sources: Esri, HERE, DeLorme, USGS, Intermap, increment P Corp., NRCAN, Esri Japan, METI, Esri China (Hong Kong), Esri (Thailand), TomTom, MapmyIndia, © OpenStreetMap ProjectLocation Project Location Client/Project Figure No. Title Utah @? @? @? @? @? @? @? @?@? @? @? S u r p l u s C a n a l W a r e h o u s e MW-8 MW-11 MW-10MW-4MW-6 MW-9 MW-2 MW-1MW-3 MW-7 MW-5ProjectArea Site Location 2 VCP Site C052 Brown Strauss Steel Notes 1. 2. 0 150 300 Feet @?Monitoring Well Project Area X: \ U T \ C l i e n t s \ B r o w n S t r a u s s \ B r o w n S t r a u s s S t e e l _ 2 0 3 7 0 6 0 1 9 \ M X D s \ F i g u r e s \ A u g 2 0 1 4 \ F i g u r e 2 S i t e L o c a t i o n . m x d R e v i s e d : 2 0 1 4 - 0 9 - 2 4 B y : j z e r b e ($$¯ DRAFT 1:5,344 (At Original document size of 8.5x11) 203706019 T11N, R12E, S05 Salt Lake County, Utah Disclaimer: Stantec assumes no responsibility for data supplied in electronic format. The recipient accepts full responsibility for verifying the accuracy and completeness of the data. The recipient releases Stantec, its officers, employees, consultants and agents, from any and all claims arising in any way from the content or provision of the data. Prepared by NF on 2014-09-15 Technical Review by ABC on 2014-01-16 Independent Review by ABC on 2014-01-16 Coordinate System: NAD 1983 UTM Zone 12N Service Layer Credits: Source: Esri, DigitalGlobe, GeoEye, i-cubed, USDA, USGS, AEX, Getmapping, Aerogrid, IGN, IGP, swisstopo, and the GIS User Community ProjectLocation MW-11 NS MW-7 NS MW-5 NS MW-3 VC 3.1 MW-1 NS MW-8 NS MW-10 NS MW-6 NS W a r e h o u s e MW-9 NS MW-4 NS Inaccessible Monitoring Well (VOC Results*) All results in ug/l; PPB ND - Not Detected NS - Not Sampled Preliminary Remediation Goal - PRG PCE - Tetrachloroethene 5 TCE - Trichloroethylene DCA - Dichloroethane DCE - Dichloroethene cis-1,2-DCE: trans-1,2-DCE VC - Vinyl Chloride 5 none 70 100 2 0 80 160 Feet 1:1,920 (At Original document size of 8.5x11) Notes 1. Coordinate System: NAD 1983 UTM Zone 12N 2. Service Layer Credits: Source: Esri, DigitalGlobe, GeoEye, Earthstar Project Location T11N, R12E, S05 Salt Lake County, Utah Client/Project VCP Site C052 203706019 Prepared by NF on 2015-11-19 Technical Review by TH on 2015-11-19 Independent Review by JR on 2015-11-19 Brown Strauss Steel Figure No. 3 Title August 2024 Chlorinated VOC Detections above PRGs Disclaimer : Stantec assumes no responsibility for data supplied in electronic format. The recipient accepts full responsibility for verifying the accur acy and completeness of the data. The recipient r eleases Stantec, its officers, employees, consultants and agents, from any and all claims arising in any way from the content or pr ovision of the data. MW-2 X: \UT \ Cl ie n t s \Br o w n S t r a u s s \ Br o w n S t r a us s S t ee l _ 2 0 3 7 0 6 0 1 9 \MX D s \Fi g u r e s \Se p t 20 1 5 \ Fi gu r e 4 V OC De t e c t i o ns - Se pt 20 1 5 .m x d Re v i s e d : 2 0 1 5 -11 -19 B y : n f a u s t Project Utah Location TABLES VCP Site #C052 Brown Strauss Steel Facility 800 South Chestnut Street Salt Lake City, Utah MW-1 HSA 14.5 2- inch/PVC 97.29 4.5-14.5 MW-2 HSA 14.5 2- inch/PVC 98.87 4.5-14.5 MW-3 HSA 14.5 2- inch/PVC 99.60 4.5-14.5 MW-4 HSA 14.5 2- inch/PVC 100.00 4.5-14.5 MW-5 HSA 15.0 2- inch/PVC 97.90 5.0-15.0 MW-6 HSA 14.5 2- inch/PVC 100.13 4.5-14.5 MW-7 HSA 14.5 2- inch/PVC 98.83 4.5-14.5 MW-8 HSA 14.5 2- inch/PVC 99.72 4.5-14.5 MW-9 HSA 14.5 2- inch/PVC 100.41 4.5-14.5 MW-10 HSA 18 2- inch/PVC 100.21 5-18 MW-11 HSA 15 2- inch/PVC 98.78 5-15 BGS = Below Ground Surface RSB = Relative to Site Benchmark HSA = Hollow Stem Auger SCREENING INTERVAL (feet BGS) DRILLING METHOD DIAMETER/M ATERIAL WELL Salt Lake City, Utah Table 1 WELL CONSTRUCTION SUMMARY Brown-Strauss Steel Facility 800 S Chestnut Street MONITOR WELL I.D. TOTAL DEPTH (feet BGS) TOP OF CASING ELEVATION (feet RSB) MW-1 14.5 96.66 8/23/07 4.14 92.52 8/27/07 4.78 91.88 99.08 12/27/07 2.59 96.49 1/4/08 3.78 95.30 4/25/08 5.28 93.80 7/9/08 3.77 95.31 10/13/08 3.41 95.67 1/13/09 1.92 97.16 97.29 5/11/09 1.93 95.36 96.95 9/8/09 3.58 93.37 12/3/09 3.58 93.37 6/22/10 2.78 94.17 12/14/10 2.11 94.84 8/7/12 3.74 93.21 8/20/13 3.65 93.30 8/12/14 2.88 94.07 9/22/15 2.99 93.96 8/29/17 3.35 93.60 10/29/19 3.02 93.93 6/25/20 3.00 93.95 MW-2 14.5 98.68 8/23/07 5.63 93.05 8/27/07 4.45 94.23 100.75 12/27/07 4.27 96.48 1/4/08 4.34 96.41 4/25/08 5.29 95.46 7/9/08 4.81 95.94 10/13/08 4.80 95.95 1/13/09 3.39 97.36 98.87 5/11/09 3.70 95.17 9/8/09 4.96 93.91 12/3/09 5.17 93.70 6/22/10 3.83 95.04 12/14/10 3.32 95.55 2/29/12 4.61 94.26 8/20/13 4.60 94.27 8/12/14 4.19 94.68 9/22/15 3.95 94.92 8/30/17 5.32 93.55 10/29/19 5.83 93.04 6/25/20 3.72 95.15 MONITOR WELL I.D. TOTAL DEPTH (feet BGS) TOP OF CASING ELEVATION (feet RSB) GAUGING DATE GROUND WATER ELEVATION (feet RSB) DEPTH TO WATER (feet BTOC) Table 2 Brown-Strauss Steel Facility 800 S Chestnut Street Salt Lake City, Utah SUMMARY OF WATER LEVEL MEASUREMENT DATA MONITOR WELL I.D. TOTAL DEPTH (feet BGS) TOP OF CASING ELEVATION (feet RSB) GAUGING DATE GROUND WATER ELEVATION (feet RSB) DEPTH TO WATER (feet BTOC) Table 2 Brown-Strauss Steel Facility 800 S Chestnut Street Salt Lake City, Utah SUMMARY OF WATER LEVEL MEASUREMENT DATA MW-3 14.5 99.44 8/23/07 6.25 93.19 8/27/07 3.58 95.86 101.33 12/27/07 4.82 96.51 1/4/08 4.95 96.38 4/25/08 NA NA 7/9/08 5.43 NA 10/13/08 5.72 95.61 102.07 1/13/09 4.18 97.89 99.50 5/11/09 3.05 96.45 9/8/09 5.73 93.77 12/3/09 5.86 93.64 6/22/10 4.59 94.91 12/14/10 4.30 95.20 2/29/12 3.73 95.77 8/7/12 5.58 93.92 8/20/13 5.45 94.05 8/12/14 4.79 94.71 9/22/15 4.84 94.66 8/29/17 6.19 93.31 10/29/19 5.71 93.79 6/25/20 4.62 94.88 9/22/22 5.27 94.23 8/9/24 6.13 93.37 MW-4 14.5 100.40 8/23/07 7.35 93.05 8/27/07 5.03 4.5-14.5 101.59 12/27/07 5.16 96.43 1/4/08 5.19 96.40 4/25/08 5.90 95.69 7/9/08 5.61 95.98 10/13/08 6.05 95.54 1/13/09 4.44 97.15 100.00 5/11/09 3.91 96.09 9/8/09 6.07 93.93 12/3/09 6.03 93.97 6/22/10 5.00 95.00 12/14/10 4.27 95.73 2/29/12 5.00 95.00 8/7/12 5.92 94.08 8/20/13 5.84 94.16 8/12/14 5.06 94.94 9/22/15 4.90 95.10 8/30/17 6.86 93.14 10/29/19 6.48 93.52 inaccessible 6/25/2020 MONITOR WELL I.D. TOTAL DEPTH (feet BGS) TOP OF CASING ELEVATION (feet RSB) GAUGING DATE GROUND WATER ELEVATION (feet RSB) DEPTH TO WATER (feet BTOC) Table 2 Brown-Strauss Steel Facility 800 S Chestnut Street Salt Lake City, Utah SUMMARY OF WATER LEVEL MEASUREMENT DATA MW-5 15.0 97.58 8/23/07 4.65 92.93 8/27/07 3.08 94.50 99.65 12/27/07 4.50 95.15 1/4/08 3.58 96.07 4/25/08 NA NA 7/9/08 5.28 94.37 10/13/08 4.27 95.38 1/13/09 3.70 95.95 97.90 5/11/09 3.16 94.74 9/8/09 4.58 93.32 12/3/09 4.81 93.09 6/22/10 4.34 93.56 12/14/10 3.61 94.29 2/29/12 3.11 94.79 8/7/12 4.74 93.16 8/20/13 4.74 93.16 8/12/14 4.10 93.80 9/22/15 4.16 93.74 8/29/17 5.22 92.68 10/29/19 4.70 93.20 6/25/20 4.29 93.61 MW-6 14.5 99.17 8/23/07 6.37 92.80 8/27/07 4.21 94.96 102.03 12/27/07 6.11 95.92 1/4/08 5.58 96.45 4/25/08 5.85 96.18 7/9/08 5.58 96.45 10/13/08 5.88 96.15 1/13/09 4.65 97.38 100.13 5/11/09 3.65 96.48 9/8/09 5.54 94.59 12/3/09 5.82 94.31 6/22/10 4.51 95.62 12/14/10 4.11 96.02 2/29/12 4.80 95.33 8/7/12 5.83 94.30 8/20/13 5.57 94.56 8/12/14 4.70 95.43 9/22/15 4.62 95.51 8/29/17 6.12 94.01 10/29/19 5.88 94.25 6/25/20 5.05 95.08 MONITOR WELL I.D. TOTAL DEPTH (feet BGS) TOP OF CASING ELEVATION (feet RSB) GAUGING DATE GROUND WATER ELEVATION (feet RSB) DEPTH TO WATER (feet BTOC) Table 2 Brown-Strauss Steel Facility 800 S Chestnut Street Salt Lake City, Utah SUMMARY OF WATER LEVEL MEASUREMENT DATA MW-7 14.5 99.06 8/23/07 6.13 92.93 8/27/07 4.17 94.89 100.29 12/27/07 4.25 96.04 1/4/08 4.20 96.09 4/25/08 5.76 94.53 7/9/08 5.19 95.10 10/13/08 5.09 95.20 1/13/09 NA NA 98.83 5/11/09 3.70 95.13 9/8/09 5.38 93.45 12/3/09 5.29 93.54 6/22/10 4.18 94.65 12/14/10 3.76 95.07 2/29/12 3.21 95.62 8/7/12 5.30 93.53 8/20/13 5.28 93.55 8/12/14 4.70 94.13 9/22/15 4.36 94.47 8/29/17 5.56 93.27 10/29/19 4.96 93.87 6/25/20 4.11 94.72 MW-8 14.5 101.42 12/27/07 5.40 96.02 1/4/08 5.17 96.25 4/25/08 4.21 97.21 7/9/08 4.58 96.84 10/13/08 5.43 95.99 1/13/09 4.53 96.89 99.72 5/11/09 2.48 97.24 9/8/09 4.84 94.88 12/3/09 5.44 94.28 6/22/10 4.42 95.30 12/14/10 3.68 96.04 2/29/12 4.32 95.40 8/7/12 4.83 94.89 8/20/13 NA NA 8/12/14 4.15 95.57 9/22/15 3.78 95.94 8/29/17 not measured 10/29/19 4.78 94.94 6/25/20 3.47 96.25 MONITOR WELL I.D. TOTAL DEPTH (feet BGS) TOP OF CASING ELEVATION (feet RSB) GAUGING DATE GROUND WATER ELEVATION (feet RSB) DEPTH TO WATER (feet BTOC) Table 2 Brown-Strauss Steel Facility 800 S Chestnut Street Salt Lake City, Utah SUMMARY OF WATER LEVEL MEASUREMENT DATA MW-9 14.5 102.01 12/27/07 5.56 96.45 1/4/08 5.87 96.14 4/25/08 7.98 94.03 7/9/08 6.61 95.40 10/13/08 6.77 95.24 1/13/09 4.46 97.55 100.41 5/11/09 4.79 95.62 9/8/09 6.91 93.50 12/3/09 6.91 93.50 6/22/10 5.96 94.45 12/14/10 5.06 95.35 2/29/12 5.31 95.10 8/7/12 7.12 93.29 8/20/13 6.67 93.74 8/12/14 5.62 94.79 9/22/15 5.88 94.53 8/29/17 7.94 92.47 10/29/19 7.41 93.00 6/25/20 6.98 93.43 MW-10 14.5 100.21 5/11/09 4.70 95.51 9/8/09 6.80 93.41 12/3/09 6.67 93.54 6/22/10 5.87 94.34 12/14/10 5.00 95.21 2/29/12 5.63 94.58 8/7/12 6.86 93.35 8/20/13 4.64 95.57 8/12/14 6.09 94.12 9/22/15 6.03 94.18 8/29/17 7.42 92.79 10/29/19 6.77 93.44 6/25/20 5.51 94.70 MONITOR WELL I.D. TOTAL DEPTH (feet BGS) TOP OF CASING ELEVATION (feet RSB) GAUGING DATE GROUND WATER ELEVATION (feet RSB) DEPTH TO WATER (feet BTOC) Table 2 Brown-Strauss Steel Facility 800 S Chestnut Street Salt Lake City, Utah SUMMARY OF WATER LEVEL MEASUREMENT DATA MW-11 14.5 98.78 5/11/09 2.63 96.15 9/8/09 4.81 93.97 12/3/09 5.11 93.67 6/22/10 3.22 95.56 12/14/10 3.34 95.44 2/29/12 3.60 95.18 8/7/12 4.78 94.00 8/20/13 6.57 92.21 8/12/14 4.10 94.68 9/22/15 3.83 94.95 8/30/17 5.04 93.74 10/29/19 4.57 94.21 6/25/20 3.42 95.36 BTOC = Below Top of Casing RSB = Relative to Site Benchmark BGS = Below Ground Surface Sample Identification Date pH (Std. Units) Conductivity (uS/cm) Turbidity (NTU) Dissolved Oxygen (mg/L) Temperature (degrees Celsius) ORP (mV) MW-1 8/27/07 8.16 1,500 27.6 4.76 ---14 12/27/07 6.72 1,640 31.9 5.76 4.9 44 4/25/08 6.95 2,510 31.3 6.56 -2.1 -34 7/9/08 7.87 2,270 20.5 3.42 17.0 -44 10/13/08 7.09 2,640 236 4.42 16.9 -19 1/13/09 6.19 2,760 2.2 5.3 9.0 10.9 5/11/09 7.11 3,420 1.2 6.22 12.8 56 9/9/09 7.29 3,120 143 3.03 19.8 -14 12/3/09 8.23 3390 8.8 7.64 10.72 64 6/23/10 7.41 2220 134 5.09 16.65 -2 12/14/10 7.45 3150 58 0.35 12.35 26 8/7/12 7.2 2310 83.1 2.86 21.57 -131 8/20/13 7.16 4,280 350.0 0 26.46 -81 8/13/14 4.54 6,880 18.5 0.00 19.69 -133 9/23/15 7.25 2,063 91.5 1.1 23.2 -127 8/29/17 7.34 1,698 5.4 0.11 26.9 -115.2 10/29/19 7.73 1,295 10.0 0.37 15.27 -128.1 6/25/20 7.50 1,278 30.1 0.22 26.1 -268 MW-2 8/27/07 7.51 1,380 33.6 5.31 ---8 12/28/07 6.77 1,840 1.4 5.91 9.5 -9 4/24/08 6.88 2,180 53.3 5.81 -0.5 -54 7/9/08 8.18 1,850 27.6 3.42 16.7 -133 10/14/08 7.26 1,580 NA 4.81 16.1 -121 1/13/09 6.63 1,490 0.0 4.93 11.1 149 5/11/09 7.48 1,400 18.3 4.85 13.3 142 9/8/09 7.99 1,370 73.5 0.99 18.5 -127 12/4/09 9.09 1,550 3.1 0 5.55 143 2/29/12 7.61 1,880 116.0 0 10.57 -11 7/31/12 7.64 1,180 1.6 3.74 23.6 -132 8/20/13 7.56 1,930 139.0 0 26.02 -137 8/12/14 5.03 5,840 12.0 0.00 25.12 -174 9/22/15 7.21 5,768 305.0 0.3 20 -5.1 8/30/17 7.26 2,840 16.9 0.01 24.8 -99.3 10/29/19 7.7 1,837 6 0.67 15.69 -83.3 6/25/20 7.53 1,843 42.3 0.17 20.5 -125 MW-3 8/28/07 7.28 1,300 21.4 5.81 ---10 12/28/07 6.93 1,550 3 7.28 7.7 51 4/24/08 6.9 1,540 0.01 4.57 -2.4 92 7/9/08 7.94 1,340 24.2 4.00 19.2 -83 10/14/08 7.05 1,270 NA 4.23 17.1 -84 1/13/09 6.42 1,440 1.9 5.29 10.6 162 5/11/09 7.76 1,420 14.5 4.83 13.1 159 9/8/09 7.67 1,330 14.2 0.00 19.73 -84 12/4/09 8.61 1,420 0 0.10 11.24 14 6/22/10 7.34 1,530 6.6 11.74 16.45 -72 12/15/10 7.57 2,030 0 0.00 10.11 -21 2/29/12 7.9 1,440 18.3 0.00 10.3 37 8/7/12 7.27 1,480 5.8 2.12 24.39 -78 8/20/13 7.27 1,880 17 4.17 25.25 -70 8/12/14 4.91 2,250 11.9 0.00 24.53 -130 9/22/15 7.5 4,624 5.23 0.00 23.8 -288 8/29/17 7.74 3,324 1.1 0.07 28.4 -237.6 10/29/19 8.46 1,496 5 0.12 17.69 -271.8 6/25/20 8.95 1,924 21.1 0.18 25.9 -328 7/2/21 10.81 1,301 0.3 1.04 24.2 -222 9/22/22 11.44 3,074 6.6 0.00 24.7 -324 8/9/24 8.36 1,357 12.5 0.00 27.8 -297 Salt Lake City, Utah Table 3 Brown-Strauss Steel Facility 800 S Chestnut Street GROUNDWATER GEOCHEMICAL SUMMARY Table 3 GROUNDWATER GEOCHEMICAL SUMMARY MW-4 8/27/07 7.31 1,260 23.8 5.05 ---21 12/28/07 6.57 1,320 -2.4 7.93 2.9 153 4/25/08 6.91 2,060 3.6 6.18 -0.9 -119 7/9/08 7.90 2,180 13.5 2.92 17.3 -86 10/13/08 7.2 1,990 96.5 4.63 17.6 -112 1/13/09 6.8 2,550 306 5.29 10.3 110 5/11/09 7.38 1,850 36.3 4.76 13.9 110 9/8/09 7.91 1,960 252 0.00 19.8 -133 12/3/09 8.63 1,930 37.7 0.00 11.81 -181 6/22/10 7.54 2,120 3.6 4.40 17.55 -148 12/14/10 7.58 2,310 35.1 0.05 13.02 -47 2/29/12 7.76 1,730 843 0.00 9.61 -115 7/31/12 7.77 1,350 790 4.58 24.45 -185 8/20/13 7.77 1,680 999 0.77 24.58 -163 8/12/14 4.99 1,640 1000 0.00 23.78 -179 9/22/15 7.64 1,454 652 0.20 23.5 -215 8/30/17 7.66 1,476 419.6 0.54 28.8 -65.7 10/29/19 Not Accessible:N/A N/A N/A N/A N/A N/A 6/25/20 N/A N/A N/A N/A N/A N/A MW-5 8/27/07 7.32 1,220 19.9 3.43 ---66 12/28/07 5.44 1,170 61.1 4.47 9.1 -1 NS NS NS NS NS NS NS 7/10/08 7.77 1,180 6.6 3.55 16.6 162 10/13/08 7.09 1,180 153 3.37 17.73 80 1/13/09 6.29 1,240 0 5.44 11.5 133 5/11/09 7.30 1,430 13.6 4.68 13.8 151 9/8/09 7.58 1,440 48.5 1.19 18.56 40 12/4/09 8.44 1,590 0.1 9.05 7.59 175 6/22/10 7.14 1,570 20.7 4.4 17.3 57 12/14/10 ------------ 2/29/12 7.35 1,630 7.4 0 8.06 374 8/7/12 7.09 1,380 3.3 2.68 24.53 103 8/20/13 7.07 2,950 40.8 0 25.96 36 8/12/14 5.07 3,550 0.0 0.00 32.68 78 9/23/15 6.89 2,836 38.1 1.20 19.4 -26.7 8/29/17 6.91 3,609 2.2 0.11 26.0 154.6 10/29/19 7.31 2,169 1 0.45 17.00 -20.9 6/25/20 7.07 3,239 21.1 0.19 24.4 -83 MW-6 8/28/07 7.07 1,920 31.0 6.00 ---124 12/27/07 6.4 1,830 16.7 4.92 2.1 -65 4/24/08 6.11 2,720 1.8 2.54 0.9 -134 7/9/08 7.36 2,440 9.6 2.17 17.6 -139 10/13/08 6.75 2,300 68.2 4.42 17.61 -110 1/13/09 5.97 2,680 0.0 4.12 10.2 -60 5/11/09 6.94 2,710 7.3 9.18 12.7 22 9/8/09 8.05 4.230 10.3 0.00 18.5 -176 12/3/09 7.98 2,590 2.0 0.00 12.47 -117 6/22/10 7.83 994 585 3.22 18.24 -97 12/14/10 ------------ 2/29/12 7.39 2,780 363 0.00 9.64 -160 7/31/12 7.05 1,770 426 4.08 24.04 -181 8/20/13 7.16 2,490 999 0.00 24.32 -143 8/12/14 4.98 2,160 64.6 0.00 23.68 -177 9/22/15 7.02 2,765 106.0 0.50 22.7 -204 8/29/17 7.10 3,259 1.5 0.21 26.0 -208.0 10/29/19 7.68 2,596 5.5 0.21 14.55 -292.1 6/25/20 7.42 2,776 20.9 0.06 20.5 -333 Sample Identification Date pH (Std. Units) Conductivity (uS/cm) Turbidity (NTU) Dissolved Oxygen (mg/L) Temperature (degrees Celsius) ORP (mV) Table 3 GROUNDWATER GEOCHEMICAL SUMMARY MW-7 8/27/07 7.51 3,520 25.0 6.16 ---8 12/27/07 6.78 4,400 9.9 3.44 9.6 -12 4/24/08 5.79 5,600 18.9 6.20 1 -2.8 7/9/08 8.87 5,530 12.0 3.41 18.4 -95 10/14/08 7.51 4,610 NA 4.85 16.9 -103 1/14/09 ------------ 5/11/09 7.99 5,060 29.1 4.48 13.2 159 9/8/09 8.32 4,810 15.1 0.3 19.8 -119 12/4/09 9.25 4,400 1.0 0.42 10.18 159 6/22/10 7.91 4,940 -10.0 5.76 17.77 -99 12/14/10 7.33 1,980 0.0 0.66 13.42 97 2/29/12 7.19 5,350 10.4 0 8.1 -301 8/7/12 7.36 3,370 NA 2.54 25.87 -292 8/20/13 7.84 3,890 113.0 0 26.13 -157 8/12/14 4.80 3,760 0.0 0.00 24.00 -165 9/22/15 7.59 3,832 92.2 1.60 21.50 -157 8/29/17 7.99 3,698 9.5 0.02 23.9 -140 10/29/19 7.82 3,340 3 0.44 16.75 -185.9 6/25/20 7.62 3,719 57.3 0.21 24.0 -228 MW-8 12/27/07 6.70 5,400 33.9 5.53 8.5 157 4/24/08 6.70 6 9.7 2.37 0.5 91 7/9/08 7.97 5,070 5.9 8.99 16.2 225 10/13/08 7.22 5,260 75.9 5.22 16.8 119 1/13/09 6.41 5,500 0.0 4.54 11.0 174 5/11/09 7.34 5,030 8.1 4.51 11.7 246 9/8/09 7.55 4,860 153.0 5.34 19.0 -138 12/3/09 9.25 4,400 1.0 0.42 10.2 159 2/29/12 7.76 3,830 5.4 0 9.2 -91 10/29/19 7.83 3,115 0.5 0.62 14.22 9.5 6/25/20 7.59 3,323 35.0 0.19 20.2 -186 MW-9 12/28/07 6.58 1,610 1.2 7.03 9.7 86 4/25/08 6.90 2,070 -5.9 5.53 -0.2 60 9/10/08 7.83 2,010 7.00 2.53 18.5 143 10/13/08 7.18 1,950 51.50 4.93 16.8 146 1/14/09 6.58 2,100 0.0 12.88 8.5 121 5/12/09 7.57 2,360 0.0 8.67 11.8 138 9/9/09 7.08 2,160 26.0 0.48 20.67 195 12/3/09 8.81 2,120 0.4 0 11.75 272 6/22/10 7.40 2,330 -10.0 3.99 17.82 303 12/14/10 7.62 2,730 26.0 0.42 11.6 37 12/20/11 7.22 2,430 28.5 1.31 11.49 14 2/29/12 7.25 2,530 24.0 0 7.05 -230 8/7/12 7.05 2,060 25.1 2.20 25.20 -126 8/20/13 7.05 2,500 21.2 2.03 NS -85 8/12/14 4.66 1,970 0.0 0.00 23.80 -110 9/23/15 7.17 1,661 21.3 1.90 23.50 -126 8/29/17 7.18 2,993 1.6 0.14 24.4 70.7 10/29/19 7.64 2,301 15 0.69 13.35 156.4 6/25/20 7.44 2,107 25.7 0.28 21.4 -71 7/2/21 7.84 811 29.1 0.26 19.0 -122 MW-10 5/12/09 7.13 2,360 18.1 7.56 13.4 143 9/8/09 7.37 2,450 443 0.72 20.48 52 12/3/09 8.35 2,140 0.4 0 12.55 72 6/23/10 7.12 2,600 -3.0 5.54 17.61 46 12/15/10 7.18 3,650 0.0 0.12 11.17 0 2/29/12 7.31 2,090 42.0 0 9.72 19 7/31/12 7.36 1,300 98.9 5.02 29.75 -24 8/20/13 7.24 2,280 464.0 0 26.91 -16 8/13/14 4.35 1,730 0.0 0.00 21.78 22 9/23/15 7.16 1,921 40.1 2.00 22.7 19.4 8/29/17 7.10 2,365 2.4 0.30 25.9 20.5 10/29/19 7.38 1,776 1.9 0.40 17.02 -77.0 6/25/20 7.25 1,859 28.1 0.27 22.6 -80 Sample Identification Date pH (Std. Units) Conductivity (uS/cm) Turbidity (NTU) Dissolved Oxygen (mg/L) Temperature (degrees Celsius) ORP (mV) Salt Lake City, Utah Table 3 Brown-Strauss Steel Facility 800 S Chestnut Street GROUNDWATER GEOCHEMICAL SUMMARY MW-11 5/11/09 7.40 1,860 48.6 4.72 13.5 156 9/8/09 7.81 2,200 298 0.00 19.68 -51 12/4/09 8.47 1,970 12.3 0.00 9.04 39 2/29/12 7.46 2,040 30.3 0.00 9.21 55 7/31/12 7.24 1,610 18 2.67 21.81 -7 8/20/13 7.18 1,820 234 0.00 26.59 -35 8/12/14 4.72 2,540 0.0 0.00 24.23 38 9/22/15 6.98 3,474 54.3 19.50 20.5 150 8/30/17 6.89 4,815 5.5 0.08 24.1 89.5 10/29/19 7.19 4,525 1 0.63 13.25 -77.8 6/25/20 7.05 4,599 24.7 0.26 23.0 -88 Sample Identification Date pH (Std. Units) Conductivity (uS/cm) Turbidity (NTU) Dissolved Oxygen (mg/L) Temperature (degrees Celsius) ORP (mV) HISTORICAL GROUND WATER ANALYTICAL RESULTS, VOCs Monitor Well Date Te t r a c h l o r o e t h e n e Tr i c h l o r o e t h y l e n e tr a n s - 1 , 2 - D i c h l o r o e t h e n e ci s - 1 , 2 - D i c h l o r o e t h e n e 1, 1 - D i c h l o r o e t h a n e 1, 1 - D i c h l o r o e t h e n e Vi n y l C h l o r i d e Be n z e n e To l u e n e Xy l e n e s 1, 3 - D i c h l o r o b e n z e n e 2- B u t a n o n e Ac e t o n e Ch l o r o f o r m Na p h t h a l e n e Tr i c h l o r o f l u o r o m e t h a n e Ca r b o n d i s u l f i d e Et h y l b e n z e n e MW-1 8/27/07 21 32 6.2 12 <2 ND 4.5 ND ND ND ND ND ND ND NS ND ---- 12/27/07 2.2 4.6 0.81J 1.8 <2 ND 0.67J ND ND ND 2.0 ND ND ND NS ND ---- 2.5 4.9 0.81J 1.8 <2 ND 0.75J ND ND ND 2.0 ND ND 0.6J NS ND ---- 4.3 7.3 ND 2.7 <2 ND ND ND ND ND 2.6 ND ND ND <2 ND ---- 4/25/08 <2 <2 <2 <2 <2 <2 <2 <2 <2 <2 <2 <2 <2 <2 <2 <2 ---- <2 <2 <2 <2 <2 <2 <2 <2 <2 <2 <2 <2 <2 <2 <2 <2 ---- 7/9/08 <2 <2 <2 <2 <2 <2 <1 <2 <2 <2 <2 <10 <10 <2 <2 <2 ---- 10/13/08 <2 <2 <2 <2 <2 <2 <1 <2 <2 <2 <2 <10 <10 <2 <2 <2 ---- 1/13/09 0.3 0.3 <2 <2 <2 <2 <1 <2 <2 <2 <2 <10 <10 <2 0.8JB <2 ---- 5/11/09 <2 <2 <2 <2 <2 <2 <1 <2 <2 <2 <2 <10 <10 <2 <2 <2 ---- 9/9/09 <2 <2 <2 <2 <2 <2 <1 <2 <2 <2 <2 <10 <10 <2 <2 <2 ---- 12/3/09 <2 <2 <2 <2 <2 <2 <1 <2 <2 <2 <2 <10 <10 <2 <2 <2 ---- 6/23/10 <2 <2 <2 <2 <2 <2 <1 <2 <2 <2 <2 <10 <10 <2 <2 <2 ---- 12/14/10 <2 <2 <2 <2 <2 <2 <1 <2 <2 <2 <2 <10 13.3 <2 <2 <2 ---- 8/7/12 <2 <2 <2 <2 <2 <2 <1 <2 <2 <2 <2 <10 <10 <2 <2 <2 ---- 8/20/13 <2 <2 <2 <2 <2 <2 <1 <2 <2 <2 <2 <10 <10 <2 <2 <2 ---- 8/13/14 <1 <1 <1 <1 <1 <1 <1 <1 <1 <1 <1 <5 3.5J <1 <1 <1 0.62 <1 9/23/15 <2 <2 <2 <2 <2 <2 <1 <2 <2 <2 <2 <10 20.8 2.79 <2 <2 <2 <2 8/30/17 <2 <2 <2 <2 <2 <2 <1 <2 <2 <2 <2 <10 <10 <2 <2 <2 <2 <2 10/29/19 <2 <2 <2 <2 <2 <2 <1 <2 <2 <2 <2 <10 <10 <2 <2 <2 <2 <2 6/25/20 <2 <2 <2 <2 <2 <2 <1 <2 <2 <2 <2 <10 <10 <2 <2 <2 <2 <2 MW-2 8/27/07 ND 23 0.80J 23 <2 1.1 ND ND ND ND ND ND ND ND NS ND ---- 12/28/07 1.4 69 2.4 53 <2 1.8 0.37J ND ND ND 0.63 3.1J ND ND NS ND ---- 4/25/08 <2 16 <2 21 <2 <2 <2 <2 <2 <2 <2 <2 <2 <2 <2 <2 ---- 7/9/08 <2 10 <2 23 <2 <2 <1 <2 <2 <2 <2 <10 10 <2 <2 <2 ---- 10/13/08 <2 3.4 <2 9.7 <2 <2 <1 <2 <2 <2 <2 <10 <10 <2 <2 <2 ---- 1/13/09 <2 3.2 <2 4.9 <2 <2 <1 <2 <2 <2 <2 <10 <10 <2 0.2JB <2 ---- 5/11/09 <2 8.5 <2 68 <2 <2 <1 <2 <2 <2 <2 <10 <10 <2 <2 <2 ---- 9/8/09 <2 <2 <2 <2 <2 <2 <1 <2 <2 <2 <2 <10 <10 <2 <2 <2 ---- 12/4/09 <2 <2 <2 2.5 <2 <2 <1 <2 <2 <2 <2 <10 <10 <2 <2 <2 ---- 2/29/12 <2 <2 <2 12.4 <2 <2 <1 <2 <2 <2 <2 <10 <10 <2 <2 <2 ---- 7/31/12 <2 <2 <2 18.9 <2 <2 <1 <2 <2 <2 <2 <10 <10 <2 <2 <2 ---- 8/20/13 <2 <2 <2 24.2 <2 <2 <1 <2 <2 <2 <2 <10 <10 <2 <2 <2 ---- 8/12/14 <1 0.77 1.1 17 <1 <1 0.38J <1 <1 <1 <1 <5 <5 <1 <1 <1 1.6 <1 9/22/15 <2 <2 <2 18.4 <2 <2 <1 <2 <2 <2 <2 <10 <10 <2 <2 <2 <2 <2 8/30/17 <2 3.7 4.35 211 <2 <2 2.19 <2 <2 <2 <2 <10 <10 <2 <2 <2 <2 <2 10/29/19 <2 <2 <2 31.8 <2 <2 <1 <2 <2 <2 <2 <10 <10 <2 <2 <2 <2 <2 6/25/20 <2 <2 <2 12.7 <2 <2 <1 <2 <2 <2 <2 <10 <10 <2 <2 <2 <2 <2 5 5 100 70 NE 7 2 5 1,000 10,000 NE NE NE 80 NE NE NE 7005510070NE7251,000 10,000 NE NE NE NE NE NE NE 700NENENENENENENE51,000 10,000 NE NE NE NE 700 NE NE 700 US EPA MCLsUDEQ, DWQ, GWQS 12/27/07 Duplicate MW-106 12/27/07 UDEQ Split MW-1 4/25/08 Duplicate MW-106 UDEQ, DERR ISLs Table 4 Brown-Strauss 800 S Chestnut Salt Lake City, Utah VOC's - EPA Method 8260B (ug/l) HISTORICAL GROUND WATER ANALYTICAL RESULTS, VOCs Monitor Well Date Te t r a c h l o r o e t h e n e Tr i c h l o r o e t h y l e n e tr a n s - 1 , 2 - D i c h l o r o e t h e n e ci s - 1 , 2 - D i c h l o r o e t h e n e 1, 1 - D i c h l o r o e t h a n e 1, 1 - D i c h l o r o e t h e n e Vi n y l C h l o r i d e Be n z e n e To l u e n e Xy l e n e s 1, 3 - D i c h l o r o b e n z e n e 2- B u t a n o n e Ac e t o n e Ch l o r o f o r m Na p h t h a l e n e Tr i c h l o r o f l u o r o m e t h a n e Ca r b o n d i s u l f i d e Et h y l b e n z e n e Table 4 Brown-Strauss 800 S Chestnut Salt Lake City, Utah VOC's - EPA Method 8260B (ug/l) MW-3 8/28/07 1.2 9.8 0.24J 70 <2 0.43J 1.6 ND ND ND ND ND ND ND NS ND ---- 1.3 12 ND 69 <2 0.28J 1.6 ND ND ND ND ND ND ND NS ND ---- 12/28/07 0.42J 5.8 ND 42 <2 ND 1.1 ND 1.6 ND 8.7 8.8 ND ND NS ND ---- 4/24/08 <2 4.7 <2 64 <2 <2 <2 <2 <2 <2 <2 <2 <2 <2 <2 <2 ---- 7/9/08 <2 7.4 <2 69 <2 <2 <1 <2 <2 <2 <2 <10 <10 <2 <2 <2 ---- 10/13/08 <2 2.5 <2 66 <2 <2 <1 <2 <2 <2 <2 <10 <10 <2 <2 <2 ---- 1/13/09 <2 2.7 0.3J 67 <2 0.5J <1 <2 <2 0.4J <2 <10 <10 <2 <2 <2 ---- 5/11/09 <2 <2 <2 <2 <2 <2 <1 <2 <2 <2 <2 <10 <10 <2 <2 <2 ---- 9/8/09 <2 3.3 3.3 74 <2 <2 <1 <2 <2 <2 <2 <10 <10 <2 <2 <2 ---- 12/4/09 <3 <2 <2 67 <2 <2 <1 <2 <2 <2 <2 <10 <10 <2 <2 <2 ---- 6/22/10 <2 4.4 <2 78 <2 <2 <1 <2 <2 <2 <2 <10 <10 <2 <2 <2 ---- 12/15/10 <2 3.22 <2 74 <2 <2 <1 <2 <2 <2 <2 <10 81.9 <2 <2 <2 ---- 2/29/12 <2 8.2 <2 135 <2 <2 <1 <2 <2 <2 <2 <10 <10 <2 <2 <2 ---- 8/7/12 <2 17.4 <2 154 <2 2.31 <1 <2 <2 <2 <2 <10 <10 <2 <2 <2 ---- <2 17.4 <2 153 <2 2.33 <1 <2 <2 <2 <2 <10 <10 <2 <2 <2 ---- 8/20/13 <2 6.37 2.45 233 <2 3.04 <1 <2 <2 <2 <2 <10 <10 <2 <2 <2 ---- 8/12/14 0.64J 13 1.5 130 <1 2.4 6.4 0.5 <1 <1 <1 <5 <5 <1 <1 <1 <1 <1 0.56J 12 1.4 130 <1 2.2 6.2 0.49J <1 <1 <1 <5 <5 <1 <1 <1 <1 <1 9/22/15 <2 2.38 <2 70.5 <2 <2 20.6 <2 3.7 <2 <2 <10 <10 <2 6.01 <2 <2 <2 8/30/17 <2 <2 <2 43.0 <2 <2 18.0 <2 <2 <2 <2 <100 27.1 <2 5.43 <2 <2 <2 10/29/19 <2 <2 2.10 44.5 <2 <2 51.2 <2 2.64 2.12 <2 <10 11.8 <2 6.69 <2 <2 <2 6/25/20 2.35 <2 6.91 242 <2 <2 94.0 <2 <2 6.01 <2 <10 <10 <2 7.92 <2 <2 <2 7/2/21 2.82 < 2 < 2 23 < 2 < 2 < 2 < 2 2.07 4.7 < 2 < 2 15.8 <2 5.23 <2 <2 <2 9/22/22 10.8 1.5 < 1 16 < 1 < 1 12.7 0.5 4.8 5.2 < 1 < 10 16.8 < 1 13 < 1 < 1 < 1 8/9/24 2 0.7 J 0.7 J 1 < 1 < 1 3.1 0.5 4.1 7.3 < 1 < 2 23 < 1 20.7 < 1 < 2 1.2 MW-4 8/27/07 ND 6.3 1.5 230 <2 1.1 1.5 ND ND ND ND ND ND ND NS ND ---- 12/28/07 0.54J 93 0.71J 110 <2 0.92J ND ND 0.42J ND 1.5 ND ND ND NS ND ---- 4/25/08 <2 93 <2 80 <2 <2 <2 <2 <2 <2 <2 <2 <2 <2 <2 <2 ---- 7/9/08 2.7 80 <2 64 <2 <2 <1 <2 <2 <2 <2 <10 <10 <2 <2 <2 ---- 3 80 <2 62 <2 <2 <1 <2 <2 <2 <2 <10 <10 <2 <2 <2 ---- 10/13/08 <2 54 <2 91 <2 <2 <1 <2 <2 <2 <2 <10 <10 <2 <2 <2 ---- <2 52 <2 93 <2 <2 <1 <2 <2 <2 <2 <10 <10 <2 <2 <2 ---- 1/13/2009 0.4J 44 0.8J 52 <2 0.8J <1 <2 <2 <2 <2 <10 <10 <2 <2 <2 ---- 0.4J 45 0.9J 54 <2 0.7J <1 <2 <2 <2 <2 <10 7J <2 0.3BJ <2 ---- 5/11/09 <2 3.2 <2 45 <2 <2 <1 <2 <2 <2 <2 <10 <10 <2 <2 <2 ---- 9/8/09 <2 7.9 4.9 110 <2 <2 <1 <2 <2 <2 <2 <10 <10 <2 <2 <2 ---- <2 6.1 5.3 120 <2 <2 <1 <2 <2 <2 <2 <10 <10 <2 <2 <2 ---- 12/3/09 <3 3.9 <2 60 <2 <2 <1 <2 <2 <2 <2 <10 <10 <2 <2 <2 ---- <4 3.6 <3 61 <2 <2 <1 <2 <2 <2 <2 <10 <10 <2 <2 <2 ---- 6/22/10 <2 <2 <2 19 <2 <2 1.0 <2 <2 <2 <2 <10 <10 <2 <2 <2 ---- 12/14/10 <2 <2 <2 22 <2 <2 1.01 <2 <2 <2 <2 <10 56.7 <2 <2 <2 ---- 2/29/12 <2 <2 <2 4.65 <2 <2 <1 <2 <2 <2 <2 <10 <10 <2 <2 <2 ---- 7/31/12 <2 <2 <2 15.0 <2 <2 2.80 <2 <2 <2 <2 <10 <10 <2 <2 <2 ---- 8/20/13 <2 <2 <2 11.2 <2 <2 <1 <2 <2 <2 <2 <10 <10 <2 <2 <2 ---- 8/12/14 <1 0.36J 0.37J 24 <1 <1 2.2 <1 <1 <1 <1 <5 <5 <1 <1 <1 <1 <1 9/22/15 <2 <2 <2 13.2 <2 <2 <1 <2 <2 <2 <2 <10 <2 <2 <2 <2 <2 <2 8/30/17 Not Sampled: NS NS NS NS NS NS NS NS NS NS NS NS NS NS NS NS NS NS 10/29/19 NS NS NS NS NS NS NS NS NS NS NS NS NS NS NS NS NS NS 6/25/20 NS NS NS NS NS NS NS NS NS NS NS NS NS NS NS NS NS NS 5 5 100 70 NE 7 2 5 1,000 10,000 NE NE NE 80 NE NE NE 7005510070NE7251,000 10,000 NE NE NE NE NE NE NE 700NENENENENENENE51,000 10,000 NE NE NE NE 700 NE NE 700 1/13/09 Duplicate Dup-1 9/8/09 Duplicate Dup-2 12/3/09 Duplicate Dup-2 8/12/14 Duplicate Dup-1 7/9/08 Duplicate Dup-1 10/13/08 Duplicate Dup-1 8/7/12 Duplicate Dup-1 8/28/07 Duplicate MW-9 UDEQ, DERR ISLs US EPA MCLsUDEQ, DWQ, GWQS HISTORICAL GROUND WATER ANALYTICAL RESULTS, VOCs Monitor Well Date Te t r a c h l o r o e t h e n e Tr i c h l o r o e t h y l e n e tr a n s - 1 , 2 - D i c h l o r o e t h e n e ci s - 1 , 2 - D i c h l o r o e t h e n e 1, 1 - D i c h l o r o e t h a n e 1, 1 - D i c h l o r o e t h e n e Vi n y l C h l o r i d e Be n z e n e To l u e n e Xy l e n e s 1, 3 - D i c h l o r o b e n z e n e 2- B u t a n o n e Ac e t o n e Ch l o r o f o r m Na p h t h a l e n e Tr i c h l o r o f l u o r o m e t h a n e Ca r b o n d i s u l f i d e Et h y l b e n z e n e Table 4 Brown-Strauss 800 S Chestnut Salt Lake City, Utah VOC's - EPA Method 8260B (ug/l) MW-5 8/27/07 ND 0.63J 0.37J 1.8 <2 ND ND ND ND ND ND ND ND ND NS ND ---- 12/28/07 ND 0.57J ND 0.72J <2 ND ND ND ND ND 0.61J ND ND ND NS ND ---- 4/25/08 NS NS NS NS NS NS NS NS NS NS NS NS NS NS NS NS ---- 7/9/08 <2 <2 <2 <2 <2 <2 <2 <2 <2 <2 <2 <10 <10 <2 <2 <2 ---- 10/13/08 <2 <2 <2 <2 <2 <2 <1 <2 <2 <2 <2 <10 <10 <2 <2 <2 ---- 1/13/09 <2 0.2J <2 <2 <2 <2 <1 <2 <2 <2 <2 <10 <10 <2 <2 <2 ---- 5/11/09 <2 <2 <2 <2 <2 <2 <1 <2 <2 <2 <2 <10 <10 <2 <2 <2 ---- 9/8/09 <2 <2 <2 <2 <2 <2 <1 <2 <2 <2 <2 <10 <10 <2 <2 <2 ---- 12/4/09 <2 <2 <2 <2 <2 <2 <1 <2 <2 <2 <2 <10 <10 <2 <2 <2 ---- 6/22/10 <2 <2 <2 <2 <2 <2 <1 <2 <2 <2 <2 <10 <10 <2 <2 <2 ---- 12/14/10 <2 <2 <2 <2 <2 <2 <1 <2 <2 <2 <2 <10 16.2 <2 <2 <2 ---- 2/29/12 <2 <2 <2 3.41 <2 <2 <1 <2 <2 <2 <2 <10 <10 <2 <2 <2 ---- 8/7/12 <2 <2 <2 8.94 <2 <2 <1 <2 <2 <2 <2 <10 <10 <2 <2 <2 ---- 8/20/13 <2 <2 <2 2.76 <2 <2 <1 <2 <2 <2 <2 <10 <10 <2 <2 <2 ---- 8/12/14 <1 <1 <1 <1 <1 <1 <1 <1 <1 <1 <1 <5 <5 <1 <1 <1 <1 <1 9/23/15 <2 <2 <2 3.68 <2 <2 <1 <2 <2 <2 <2 <10 <10 <2 <2 <2 <2 <2 8/30/17 <2 <2 <2 23.9 <2 <2 <1 <2 <2 <2 <2 <10 <10 <2 <2 <2 <2 <2 10/29/19 <2 <2 <2 2.65 <2 <2 <1 <2 <2 <2 <2 <10 <10 <2 <2 <2 <2 <2 6/25/20 <2 <2 <2 5.01 <2 <2 <1 <2 <2 <2 <2 <10 <10 <2 <2 <2 <2 <2 MW-6 8/28/07 2.3 0.74J ND ND ND ND ND 0.41J 2.5J ND ND ND ND NS ND ---- 12/27/07 1.1 0.38J ND ND ND ND ND ND 0.56J 0.98J 1.8 1,900 26 ND NS ND ---- NS NS NS NS NS NS NS NS NS NS NS NS NS NS NS NS ---- 4/24/08 <2 <2 <2 <2 <2 <2 <2 <2 <2 4.2 <2 10.0 <2 <2 41 <2 ---- 7/9/08 <2 <2 <2 <2 <2 <2 >2 <2 <2 3.7 <2 <10 <10 <2 43 <2 ---- 10/13/08 <2 <2 <2 <2 <2 <2 <1 <2 <2 3.5 <2 <10 <10 <2 30 <2 ---- 1/13/09 <20 <20 <20 <20 <20 <20 <10 <20 <20 3J <20 <100 <100 <20 33B <20 ---- 5/11/09 <200 <200 <200 <200 <200 <200 <200 <200 <200 <200 <200 <1000 <1000 <200 <200 <200 ---- 9/8/09 3.1 2.4 <2 <2 <2 <2 <1 <2 <2 5.8 <2 <10 <10 <2 150 <2 ---- 4.6 2 <2 <2 <2 <2 <1 <2 <2 6.1 <2 <10 <10 <2 230 <2 ---- 12/4/09 <2 2.3 <2 <2 <2 <2 <1 <2 <2 2.7 <2 <10 <10 <2 36 <3 ---- 6/22/10 <2 <2 <2 <2 <2 <2 <1 <2 <2 <2 <2 <10 12 <2 32 <2 ---- 12/14/10 <2 <2 <2 <2 <2 <2 <1 <2 <2 <2 <2 <10 40.7 <2 29.1 <2 ---- 2/29/12 <2 2.54 <2 <2 <2 <2 <1 <2 <2 6.1 <2 <10 <10 <2 27.4 <2 ---- 7/31/12 <2 2.09 <2 <2 <2 <2 <1 <2 <2 <2 <2 <10 <10 <2 18.1 <2 ---- 8/20/13 <2 2.11 <2 <2 <2 <2 <1 <2 <2 10.2 <2 <10 <10 <2 28.6 <2 ---- 8/12/14 <1 2.2 <1 0.57 <1 <1 <1 0.38 0.42 0.76 <1 <5 <5 <1 8.7 <1 <1 0.38 9/22/15 <2 3.33 <2 <2 <2 <2 <1 <2 <2 <2 <2 <10 <10 <2 22.5 <2 <2 <2 8/30/17 <2 2.66 <2 <2 <2 <2 <1 <2 <2 <2 <2 <10 <10 <2 26.1 <<2 <2 10/29/19 <2 <2 <2 <2 <2 <2 <1 <2 <2 <2 <2 <10 <10 <2 52.6 <2 <2 <2 6/25/20 <2 <2 <2 <2 <2 <2 <1 <2 <2 <2 <2 <10 <10 <2 51.6 <2 <2 <2 5 5 100 70 NE 7 2 5 1,000 10,000 NE NE NE 80 NE NE NE 7005510070NE7251,000 10,000 NE NE NE NE NE NE NE 700NENENENENENENE51,000 10,000 NE NE NE NE 700 NE NE 700 9/8/09 Duplicate Dup-1 US EPA MCLsUDEQ, DWQ, GWQSUDEQ, DERR ISLs 12/27/07 UDEQ Split MW-6 HISTORICAL GROUND WATER ANALYTICAL RESULTS, VOCs Monitor Well Date Te t r a c h l o r o e t h e n e Tr i c h l o r o e t h y l e n e tr a n s - 1 , 2 - D i c h l o r o e t h e n e ci s - 1 , 2 - D i c h l o r o e t h e n e 1, 1 - D i c h l o r o e t h a n e 1, 1 - D i c h l o r o e t h e n e Vi n y l C h l o r i d e Be n z e n e To l u e n e Xy l e n e s 1, 3 - D i c h l o r o b e n z e n e 2- B u t a n o n e Ac e t o n e Ch l o r o f o r m Na p h t h a l e n e Tr i c h l o r o f l u o r o m e t h a n e Ca r b o n d i s u l f i d e Et h y l b e n z e n e Table 4 Brown-Strauss 800 S Chestnut Salt Lake City, Utah VOC's - EPA Method 8260B (ug/l) MW-7 8/27/07 ND 3.2 0.55J 13 <2 ND ND ND ND ND ND ND ND ND NS ND ---- 12/27/07 ND 2.9 0.57J 14 <2 0.26 ND ND ND ND 077J ND ND ND NS ND ---- 4/25/08 <2 <2 <2 22 <2 <2 <2 <2 <2 <2 <2 <2 <2 <2 <2 <2 ---- 7/9/08 <2 <2 <2 50 <2 <2 <2 <2 <2 3.7 <2 <10 <10 <2 <2 <2 ---- 10/13/08 <2 <2 <2 48 <2 <2 <1 <2 <2 <2 <2 <10 <10 <2 <2 <2 ---- 1/13/09 NS NS NS NS NS NS NS NS NS NS NS NS NS NS NS NS ---- 5/11/09 <2 <2 3.4 72 4.6 <2 1.7 <2 <2 <2 <2 <10 <10 <2 <2 <2 ---- <2 <2 3.4 77 4.6 <2 1.9 <2 <2 <2 <2 <10 <10 <2 <2 <2 ---- 9/8/2009 <2 <2 7.6 120 4.6 <2 2.6 <2 <2 <2 <2 <10 <10 <2 <2 <2 ---- 12/4/2009 <2 <2 3.7 88 <2 <2 1.4 <2 <2 <2 <2 <10 <10 <2 <2 <2 ---- 6/22/2010 <2 <2 3.4 85 <2 <2 1.8 <2 <2 <2 <2 <10 <10 <2 <2 <2 ---- <2 <2 3.5 86 <2 2.0 1.8 <2 <2 <2 <2 <10 <10 <2 <2 <2 ---- 12/14/2010 <2 <2 <2 46.2 <2 <2 <1 <2 <2 <2 <2 <10 <10 <2 <2 <2 ---- <2 <2 <2 47.8 <2 <2 <1 <2 <2 <2 <2 <10 <10 <2 <2 <2 ---- 10/24/2011 <2 <2 4.47 92.5 <2 2.01 2.01 <2 <2 <2 <2 <10 <10 <2 <2 <2 ---- <0.3 1.1 5.6 95 0.62 1.6 2.1 <0.3 <0.3 <0.3 <0.3 NS <2.5 <0.3 <0.3 <0.3 ---- 12/20/2011 NS NS NS NS NS NS NS NS NS NS NS NS NS NS NS NS ---- 2/29/12 <2 <2 <2 50.0 <2 <2 <1 <2 <2 <2 <2 <10 <10 <2 <2 <2 ---- 8/7/12 <2 <2 3.47 64.0 <2 <2 <1 <2 <2 <2 <2 <10 <10 <2 <2 <2 ---- 8/20/13 <2 <2 5.95 91.0 <2 <2 <1 <2 <2 <2 <2 <10 <10 <2 <2 <2 ---- <2 <2 5.54 92.0 <2 <2 <1 <2 <2 <2 <2 <10 <10 <2 <2 <2 ---- 8/12/14 <1 <1 3.6 65 <1 0.97J 1.0 <1 <1 <1 <1 <5 <5 <1 <1 <1 <1 <1 9/22/15 <2 <2 3.69 64.1 <2 <2 <2 <2 <2 <2 <2 <10 <10 <2 <2 <2 <2 <2 8/30/17 2.07 <2 4.62 93.4 <2 <2 2.1 <2 <2 <2 <2 <10 <10 Mp <2 <2 <2 <2 10/29/19 <2 <2 <2 32.8 <2 <2 <1 <2 <2 <2 <2 <10 <10 <2 <2 <2 <2 <2 10/29/2019 Duplicate Dup-1 <2 <2 <2 34.3 2.18 <2 <1 <2 <2 <2 <2 <10 <10 <2 <2 <2 <2 <2 6/25/20 <2 <2 2.18 42.0 <2 <2 <1 <2 <2 <2 <2 <10 <10 <2 <2 <2 <2 <2 6/25/20 Duplicate Dup-1 <2 <2 2.22 42.3 <2 <2 <1 <2 <2 <2 <2 <10 <10 <2 <2 <2 <2 <2 MW-8 12/27/07 ND ND ND ND <2 ND ND ND 0.23J ND 0.70J ND ND ND NS ND ---- 4/24/08 <2 <2 <2 <2 <2 <2 <2 <2 <2 <2 <2 <2 <10 <2 <2 <2 ---- 7/9/08 <2 <2 <2 <2 <2 <2 <2 <2 <2 <2 <2 <10 <10 <2 <2 <2 ---- 10/13/08 <2 <2 <2 <2 <2 <2 <1 <2 <2 <2 <2 <10 <10 <2 <2 <2 ---- 1/13/09 <2 <2 <2 <2 <2 <2 <1 <2 <2 0.4J <2 <10 <10 <2 <2 <2 ---- 5/11/09 <2 <2 <2 <2 <2 <2 <1 <2 <2 <2 <2 <10 <10 <2 <2 <2 ---- 9/8/09 <2 <2 <2 <2 <2 <2 <1 <2 <2 <2 <2 <10 <10 <2 <2 <2 ---- 12/3/09 <2 <2 <2 <2 <2 <2 <1 <2 <2 <2 <2 <10 <10 <2 <2 <2 ---- 2/29/12 <2 <2 <2 <2 <2 <2 <1 <2 <2 <2 <2 <10 <10 <2 <2 <2 ---- 8/20/13 NS NS NS NS NS NS NS NS NS NS NS NS NS NS NS NS NS NS 8/12/14 NS NS NS NS NS NS NS NS NS NS NS NS NS NS NS NS NS NS 8/30/17 NS NS NS NS NS NS NS NS NS NS NS NS NS NS NS NS NS NS 10/29/19 <2 <2 <2 <2 <2 <2 <1 <2 <2 <2 <2 <10 <10 <2 <2 <2 <2 <2 6/25/20 <2 <2 <2 <2 <2 <2 <1 <2 <2 <2 <2 <10 <10 <2 <2 <2 <2 <2 5 5 100 70 NE 7 2 5 1,000 10,000 NE NE NE 80 NE NE NE 7005510070NE7251,000 10,000 NE NE NE NE NE NE NE 700NENENENENENENE51,000 10,000 NE NE NE NE 700 NE NE 700UDEQ, DERR ISLsUDEQ, DWQ, GWQS 5/11/09 Duplicate Dup-1 8/20/2013 Duplicate Dup-1 6/22/10 Duplicate Dup-1 12/14/10 Duplicate Dup-1 10/24/11 UDEQ Split MW-7 US EPA MCLs HISTORICAL GROUND WATER ANALYTICAL RESULTS, VOCs Monitor Well Date Te t r a c h l o r o e t h e n e Tr i c h l o r o e t h y l e n e tr a n s - 1 , 2 - D i c h l o r o e t h e n e ci s - 1 , 2 - D i c h l o r o e t h e n e 1, 1 - D i c h l o r o e t h a n e 1, 1 - D i c h l o r o e t h e n e Vi n y l C h l o r i d e Be n z e n e To l u e n e Xy l e n e s 1, 3 - D i c h l o r o b e n z e n e 2- B u t a n o n e Ac e t o n e Ch l o r o f o r m Na p h t h a l e n e Tr i c h l o r o f l u o r o m e t h a n e Ca r b o n d i s u l f i d e Et h y l b e n z e n e Table 4 Brown-Strauss 800 S Chestnut Salt Lake City, Utah VOC's - EPA Method 8260B (ug/l) MW-9 12/27/07 120 27 ND 11 <2 ND ND ND ND ND 0.60J ND ND 0.49 NS ND ---- 4/25/08 87 16 <2 6.0 <2 <2 <2 <2 <2 <2 <2 <10 <2 2.1 <2 <2 ---- 86 15 <0.08 6.4 <2 <0.08 <0.215 ND <0.08 <0.227 <0.167 <1.89 <2.33 2.2 NS 0.48J ---- 7/10/08 110 18 <2 6.9 <2 <2 <2 <2 <2 <2 <2 <10 <10 3.2 <2 <2 ---- 88 15 <0.08 6.4 <2 0.136 <0.215 ND 0.14J <0.227 <0.167 <1.89 <2.33 3.0 NS 0.50J ---- 10/13/08 130 18 <2 6.2 <2 <2 <1 <2 <2 <2 <2 <10 <10 3.6 <2 <2 ---- 110 14 ND 4.6 <2 ND ND ND ND ND ND ND ND 3.0 ND 0.67J ---- 1/13/09 140 15 <2 5.2 <2 <2 <1 <2 <2 <2 <2 <10 <10 2.9 <2 0.7J ---- 96 11 ND 3.7 <2 ND ND ND ND ND ND ND 4.9J 2.1 NS .46J ---- 5/12/09 110 8.8 <2 2.6 <2 <2 <1 <2 <2 <2 <2 <10 <10 <2 <2 <2 ---- 71 8.3 <1 2.1 <1 <1 <1 0.14 J <1 <1 <1 NS <5 1.8 NS NS ---- 9/9/09 120 10 <2 2.1 <2 <2 <1 <2 <2 <2 <2 <10 <10 3.9 <2 <2 ---- 82 7.5 <1 1.8 <1 <1 <1 0.11 <1 <1 <1 NS <5 1.6 NS NS ---- 12/3/09 98 11 <2 <2 <2 <2 <1 <2 <2 <2 <2 <10 <10 <2 <2 <2 ---- 68 7.2 ND 1.2 ND ND ND ND ND ND ND ND ND ND ND ND ---- 6/22/10 61 9.8 <2 <2 <2 <2 <1 <2 <2 <2 <2 <10 <10 <2 <2 <2 ---- 60 9.2 <2 1.2 <2 <2 <1 <2 <2 <2 <2 NS NS 1 NS NS ---- 12/14/10 60.6 12.4 <2 <2 <2 <2 <1 <2 <2 <2 <2 <10 10.6 <2 <2 <2 ---- 77 12 <1 1.2 <1 <1 <1 <1 <1 <1 <1 NS 19 1.4 NS NS ---- 10/24/11 50.4 12.7 <2 <2 <2 <1 <2 <2 <2 <2 <2 <10 <10 <2 <2 <2 ---- 12/20/11 28.4 25.1 <2 3.37 <2 <1 <2 <2 <2 <2 <2 <10 <10 <2 <2 <2 ---- 26 22 <1 2.5 <1 <1 <1 <1 <1 <1 <1 NS <5 1.4 NS NS ---- 2/29/12 21 37.1 <2 4.92 <2 <1 <2 <2 <2 <2 <2 <10 <10 <2 <2 <2 ---- 16 31 <1 4.3 <1 <1 <1 <1 <1 <1 <1 NS <5 0.83 NS NS ---- 8/7/12 3.07 45.6 <2 12.5 <2 <1 <2 <2 <2 <2 <2 <10 <10 <2 <2 <2 ---- 2..4 41 0.42 13 <1 <1 <1 0.31 <1 <1 <1 <1 <5 <1 NS NS ---- 8/20/13 <2 10.6 <2 51.8 <2 <1 <2 <2 <2 <2 <2 <10 <10 <2 <2 <2 ---- 0.52J 12 0.62J 51 <1 <1 0.46J 0.48J <1 <1 <1 <1 <5 <1 NS NS ---- 8/12/14 <1 8.6 0.68J 50 <1 <1 0.58J 0.42J <1 <1 <1 <5 <5 <1 <1 <1 <1 <1 <5 11 <5 70J <5 <5 <5 <5 <5 <5 <5 <5 <20 <5 <10 <5 <1 <1 9/23/15 6.34 15.8 <2 34.3 <2 <2 <1 <2 <2 <2 <2 <10 <10 <2 <2 <2 <2 <2 5.9 15 < 0.3 30 < 0.3 < 0.3 1.1 0.39 < 0.3 < 0.3 < 0.3 < 0.3 < 0.3 < 0.3 < 0.3 < 0.3 < 0.3 < 0.3 8/30/17 11.9 5.63 <2 22.7 <2 <2 <1 <2 <2 <2 <2 <10 <10 <2 <2 <2 <2 <2 8/30/2017 UDEQ Split MW-9 9.8 5.1 0.65 21 < 0.3 < 0.3 0.86 < 0.3 < 0.3 < 0.3 < 0.3 < 0.3 < 0.3 < 0.3 < 0.3 < 0.3 < 0.3 < 0.3 10/29/19 4.69 3.35 <2 16.3 <2 <2 <1 <2 <2 <2 <2 <10 <10 <2 <2 <2 <2 <2 10/29/19 UDEQ Split MW-9 6.4 3.7 0.9 15.6 <2 <2 <1 <2 <2 <2 <2 <10 <10 <2 <2 <2 <2 <2 6/25/20 7.73 3.21 <2 10.0 <2 <2 <1 <2 <2 <2 <2 <10 <10 <2 <2 <2 <2 <2 6/25/20 UDEQ Split MW-9 10.6 2.8 0.5 J 6.9 <1 <1 0.7 J <1 <1 <1 <1 <10 <10 <1 <1 <1 <1 <1 7/2/21 3.4 < 2 < 2 7.6 < 2 < 2 1.09 < 2 < 2 < 2 < 2 < 2 < 2 < 2 < 2 < 2 < 2 < 2 MW-9 DUP 7/2/21 3.54 < 2 < 2 8.8 < 2 < 2 1.16 < 2 < 2 < 2 < 2 < 2 < 2 < 2 < 2 < 2 < 2 < 2 MW-10 5/12/09 <2 <2 <2 <2 <2 <2 <1 <2 <2 <2 <2 <10 <10 <2 <2 <2 ---- <2 <2 <2 <2 <2 <2 <1 <2 <2 <2 <2 <10 <10 <2 <2 <2 ---- 9/8/2009 <2 <2 <2 <2 <2 <2 <1 <2 <2 <2 <2 <10 <10 <2 <2 <2 ---- 12/3/2009 <2 <2 <2 <2 <2 <2 <1 <2 <2 <2 <2 <10 <10 <2 <2 <2 ---- <2 <2 <2 <2 <2 <2 <1 <2 <2 <2 <2 <10 <10 <2 <2 <2 ---- 6/23/2010 <2 <2 <2 <2 <2 <2 <1 <2 <2 <2 <2 <10 <10 <2 <2 <2 ---- 12/15/2010 <2 <2 <2 <2 <2 <2 <1 <2 <2 <2 <2 <10 21.6 <2 <2 <2 ---- 2/29/12 <2 <2 <2 <2 <2 <2 <1 <2 <2 <2 <2 <10 <10 <2 <2 <2 ---- 7/31/12 <2 <2 <2 <2 <2 <2 <1 <2 <2 <2 <2 <10 <10 <2 <2 <2 ---- 8/20/13 <2 <2 <2 <2 <2 <2 <1 <2 <2 <2 <2 <10 <10 <2 <2 <2 ---- 8/13/14 <1 0.41J <1 0.44J <1 <1 <1 <1 <1 <1 <1 <5 <5 <1 <1 <1 <1 <1 9/23/15 <2 <2 <2 <2 <2 <2 <1 <2 <2 <2 <2 <10 <10 <2 <2 <2 <2 <2 <2 <2 <2 <2 <2 <2 <1 <2 <2 <2 <2 <10 <2 <2 <2 <2 <2 <2 8/30/2017 <2 <2 <2 <2 <2 <2 <2 <2 <2 <2 <2 <10 <10 <2 <2 <2 <2 <2 10/29/2019 <2 <2 <2 <2 <2 <2 <1 <2 <2 <2 <2 <10 <10 <2 <2 <2 <2 <2 6/25/2020 <2 <2 <2 <2 <2 <2 <1 <2 <2 <2 <2 <10 <10 <2 <2 <2 <2 <2 10/13/08 UDEQ Split MW-9 4/25/08 UDEQ Split MW-9 5/12/09 Duplicate Dup-2 12/3/09 Duplicate Dup-1 6/22/10 UDEQ Split MW-9 12/14/10 UDEQ Split MW-9 12/22/11 UDEQ Split MW-9 2/29/12 UDEQ Split MW-9 8/12/14 UDEQ Split MW-9 9/23/15 UDEQ Split MW-9 1/13/09 UDEQ Split MW-9 5/12/09 UDEQ Split MW-9 8/7/12 UDEQ Split MW-9 8/20/13 UDEQ Split MW-9 9/23/2015 Duplicate Dup-1 9/9/09 UDEQ Split MW-9 12/3/09 UDEQ Split MW-9 7/10/08 UDEQ Split MW-9 HISTORICAL GROUND WATER ANALYTICAL RESULTS, VOCs Monitor Well Date Te t r a c h l o r o e t h e n e Tr i c h l o r o e t h y l e n e tr a n s - 1 , 2 - D i c h l o r o e t h e n e ci s - 1 , 2 - D i c h l o r o e t h e n e 1, 1 - D i c h l o r o e t h a n e 1, 1 - D i c h l o r o e t h e n e Vi n y l C h l o r i d e Be n z e n e To l u e n e Xy l e n e s 1, 3 - D i c h l o r o b e n z e n e 2- B u t a n o n e Ac e t o n e Ch l o r o f o r m Na p h t h a l e n e Tr i c h l o r o f l u o r o m e t h a n e Ca r b o n d i s u l f i d e Et h y l b e n z e n e Table 4 Brown-Strauss 800 S Chestnut Salt Lake City, Utah VOC's - EPA Method 8260B (ug/l) MW-11 5/12/09 <2 <2 <2 <2 <2 <2 <1 <2 <2 <2 <2 <10 <10 <2 <2 <2 ---- 9/8/09 <2 <2 <2 <2 <2 <2 <1 <2 <2 <2 <2 <10 <10 <2 <2 <2 ---- 12/4/09 <2 <2 <2 <2 <2 <2 <1 <2 <2 <2 <2 <10 <10 <2 <2 <2 ---- 2/29/12 <2 <2 <2 <2 <2 <2 <1 <2 <2 <2 <2 <10 <10 <2 <2 <2 ---- 7/31/12 <2 <2 <2 <2 <2 <2 <1 <2 <2 <2 <2 <10 <10 <2 <2 <2 ---- 8/20/13 <2 <2 <2 <2 <2 <2 <1 <2 <2 <2 <2 <10 <10 <2 <2 <2 ---- 8/12/14 <1 <1 <1 <1 <1 <1 <1 <1 <1 <1 <1 <5 <5 <1 <1 <1 <1 <1 9/22/15 <2 <2 <2 <2 <2 <2 <1 <2 <2 <2 <2 <10 <10 <2 <2 <2 <2 <2 8/30/17 <2 <2 <2 <2 <2 <2 <1 <2 <2 <2 <2 <10 <10 <2 <2 <2 <2 <2 10/29/19 <2 <2 <2 <2 <2 <2 <1 <2 <2 <2 <2 <10 <10 <2 <2 <2 <2 <2 6/25/20 <2 <2 <2 <2 <2 <2 <1 <2 <2 <2 <2 <10 <10 <2 <2 <2 <2 <2 5 5 100 70 NE 7 2 5 1,000 10,000 NE NE NE 80 NE NE NE 7005510070NE7251,000 10,000 NE NE NE 80 NE NE NE 700 NE NE NE NE NE NE NE 5 1,000 10,000 NE NE NE NE 700 NE NE 700 NS = Not Sampled VOCs = Volatile Organic Compounds ND - Not Detected MCL = Maximum Contaminant Level NE = Not Established J = estimated value ug/l = micrograms per liter (ppb)Values in "Bold" exceeded MCL B = in Method Blank below PQL UDEQ, DERR ISLs US EPA MCLsUDEQ, DWQ, GWQS ANALYTICAL RESULTS REPORT VCP Site #C052 Brown Strauss Steel Facility 800 South Chestnut Street Salt Lake City, Utah The analyses presented on this report were performed in accordance with the National Environmental Laboratory Accreditation Program (NELAP) unless noted in the comments, flags, or case narrative. If the report is to be used for regulatory compliance, it should be presented in its entirety, and not be altered. Client Service Contact: 801.262.7299 Stantec Consulting Inc. Attn: John Russell 2890 East Cottonwood Parkway, Suite 300 Salt Lake City, UT 84121 Work Order: 24H0884 Project: BSS 8/21/2024 Approved By: Mark Broadhead, Project Manager 9632 South 500 West Sandy, Utah 84070 Serving the Intermountain West since 1953 801.262.7299 Main 866.792.0093 Fax www.ChemtechFord.com Page 1 of 14 xx Chemtech-Ford Laboratories Serving the Intermountain West Since 1953 Certificate of Analysis 9632 South 500 West Sandy, UT 84070 O:(801) 262-7299 F: (866) 792-0093 www.ChemtechFord.com Stantec Consulting Inc. John Russell 2890 East Cottonwood Parkway, Suite 300 Salt Lake City, UT 84121 PO#: Receipt: Date Reported: Project Name: 203723323 8/9/24 14:50 @ 3.3 °C 8/21/2024 BSS Sample ID: MW-3 Lab ID: 24H0884-01Matrix: Water Flag(s)Units Analysis Date/Time Date Sampled: 8/9/24 12:30 Preparation Date/Time Sampled By: Cody Fauth Minimum Reporting Limit MethodResult Volatile Organic Compounds ug/L 8/14/248/14/241.0 EPA 8260D/5030BND1,1,1,2-Tetrachloroethane ug/L 8/14/248/14/241.0 EPA 8260D/5030BND1,1,1-Trichloroethane ug/L 8/14/248/14/241.0 EPA 8260D/5030BND1,1,2,2-Tetrachloroethane ug/L 8/14/248/14/241.0 EPA 8260D/5030BND1,1,2-Trichloroethane ug/L 8/14/248/14/241.0 EPA 8260D/5030BND1,1,2-Trichlorotrifluoroethane ug/L J-LOW-L8/14/248/14/241.0 EPA 8260D/5030BND1,1-Dichloroethane ug/L J-LOW-L8/14/248/14/241.0 EPA 8260D/5030BND1,1-Dichloroethene ug/L 8/14/248/14/241.0 EPA 8260D/5030BND1,1-Dichloropropene ug/L 8/14/248/14/2410.0 EPA 8260D/5030BND2-Hexanone ug/L 8/14/248/14/241.0 EPA 8260D/5030BND1,2,3-Trichlorobenzene ug/L 8/14/248/14/241.0 EPA 8260D/5030BND1,2,3-Trichloropropane ug/L 8/14/248/14/241.0 EPA 8260D/5030BND1,2,4-Trichlorobenzene ug/L 8/14/248/14/241.0 EPA 8260D/5030B2.21,2,4-Trimethylbenzene ug/L 8/14/248/14/241.0 EPA 8260D/5030BND1,2-Dibromo-3-chloropropane ug/L 8/14/248/14/241.0 EPA 8260D/5030BND1,2-Dibromoethane (EDB) ug/L 8/14/248/14/241.0 EPA 8260D/5030BND1,2-Dichlorobenzene ug/L 8/14/248/14/241.0 EPA 8260D/5030BND1,2-Dichloroethane ug/L 8/14/248/14/241.0 EPA 8260D/5030BND1,2-Dichloropropane ug/L 8/14/248/14/241.0 EPA 8260D/5030B2.11,3,5-Trimethylbenzene ug/L 8/14/248/14/241.0 EPA 8260D/5030BND1,3-Dichlorobenzene ug/L 8/14/248/14/241.0 EPA 8260D/5030BND1,3-Dichloropropane ug/L 8/14/248/14/241.0 EPA 8260D/5030BND1,4-Dichlorobenzene ug/L J-LOW-L8/14/248/14/241.0 EPA 8260D/5030BND2,2-Dichloropropane ug/L 8/14/248/14/241.0 EPA 8260D/5030BND2-Chlorotoluene ug/L J-LOW-L8/14/248/14/242.0 EPA 8260D/5030BND2-Nitropropane ug/L 8/14/248/14/241.0 EPA 8260D/5030BND4-Chlorotoluene ug/L 8/14/248/14/2420.0 EPA 8260D/5030B23.0Acetone ug/L 8/14/248/14/245.0 EPA 8260D/5030BNDAcrylonitrile ug/L 8/14/248/14/240.4 EPA 8260D/5030B0.5Benzene ug/L 8/14/248/14/241.0 EPA 8260D/5030BNDBromobenzene ug/L 8/14/248/14/241.0 EPA 8260D/5030BNDBromochloromethane ug/L 8/14/248/14/241.0 EPA 8260D/5030BNDBromodichloromethane ug/L 8/14/248/14/241.0 EPA 8260D/5030BNDBromoform ug/L J-LOW-L8/14/248/14/242.0 EPA 8260D/5030BNDBromomethane ug/L 8/14/248/14/242.0 EPA 8260D/5030BNDCarbon Disulfide ug/L 8/14/248/14/241.0 EPA 8260D/5030BNDCarbon Tetrachloride ug/L 8/14/248/14/241.0 EPA 8260D/5030BNDChlorobenzene Project Name: BSS CtF WO#: 24H0884 www.ChemtechFord.com Page 2 of 14Page 2 of 14 xx Chemtech-Ford Laboratories Serving the Intermountain West Since 1953 Certificate of Analysis 9632 South 500 West Sandy, UT 84070 O:(801) 262-7299 F: (866) 792-0093 www.ChemtechFord.com Stantec Consulting Inc. John Russell 2890 East Cottonwood Parkway, Suite 300 Salt Lake City, UT 84121 PO#: Receipt: Date Reported: Project Name: 203723323 8/9/24 14:50 @ 3.3 °C 8/21/2024 BSS Sample ID: MW-3 (cont.) Lab ID: 24H0884-01Matrix: Water Flag(s)Units Analysis Date/Time Date Sampled: 8/9/24 12:30 Preparation Date/Time Sampled By: Cody Fauth Minimum Reporting Limit MethodResult Volatile Organic Compounds (cont.) ug/L 8/14/248/14/241.0 EPA 8260D/5030BNDChloroethane ug/L 8/14/248/14/241.0 EPA 8260D/5030BNDChloroform ug/L J-LOW-L8/14/248/14/241.0 EPA 8260D/5030BNDChloromethane ug/L 8/14/248/14/241.0 EPA 8260D/5030B3.9cis-1,2-Dichloroethene ug/L 8/14/248/14/241.0 EPA 8260D/5030BNDcis-1,3-Dichloropropene ug/L J-LOW-L8/14/248/14/2410.0 EPA 8260D/5030BNDCyclohexanone ug/L 8/14/248/14/241.0 EPA 8260D/5030BNDDibromochloromethane ug/L 8/14/248/14/241.0 EPA 8260D/5030BNDDibromomethane ug/L J-LOW-L8/14/248/14/241.0 EPA 8260D/5030BNDDichlorodifluoromethane ug/L 8/14/248/14/242.0 EPA 8260D/5030BNDEthyl Acetate ug/L 8/14/248/14/241.0 EPA 8260D/5030B1.2Ethylbenzene ug/L 8/14/248/14/241.0 EPA 8260D/5030BNDEthyl Ether ug/L 8/14/248/14/241.0 EPA 8260D/5030BNDHexachlorobutadiene ug/L 8/14/248/14/2420.0 EPA 8260D/5030BNDIsobutanol ug/L 8/14/248/14/241.0 EPA 8260D/5030BNDIsopropylbenzene ug/L 8/14/248/14/242.0 EPA 8260D/5030BNDMethyl Ethyl Ketone ug/L J8/14/248/14/245.0 EPA 8260D/5030B1.5Methyl Isobutyl Ketone ug/L 8/14/248/14/241.0 EPA 8260D/5030BNDMethylene Chloride ug/L 8/14/248/14/240.6 EPA 8260D/5030BNDMethyl-tert-butyl ether (MTBE) ug/L 8/14/248/14/241.0 EPA 8260D/5030B20.7Naphthalene ug/L 8/14/248/14/2450.0 EPA 8260D/5030BNDn-Butyl Alcohol ug/L 8/14/248/14/241.0 EPA 8260D/5030BNDn-Butylbenzene ug/L 8/14/248/14/241.0 EPA 8260D/5030BNDn-Propyl Benzene ug/L 8/14/248/14/241.0 EPA 8260D/5030BNDPentachloroethane ug/L 8/14/248/14/241.0 EPA 8260D/5030BNDp-Isopropyltoluene ug/L 8/14/248/14/241.0 EPA 8260D/5030BNDsec-Butyl Benzene ug/L 8/14/248/14/241.0 EPA 8260D/5030BNDStyrene ug/L 8/14/248/14/241.0 EPA 8260D/5030BNDtert-Butylbenzene ug/L 8/14/248/14/241.0 EPA 8260D/5030B2.0Tetrachloroethene ug/L 8/14/248/14/241.0 EPA 8260D/5030B4.1Toluene ug/L J8/14/248/14/241.0 EPA 8260D/5030B0.7trans-1,2-Dichloroethene ug/L 8/14/248/14/241.0 EPA 8260D/5030BNDtrans-1,3-Dichloropropene ug/L J8/14/248/14/241.0 EPA 8260D/5030B0.7Trichloroethene ug/L 8/14/248/14/241.0 EPA 8260D/5030BNDTrichlorofluoromethane ug/L 8/14/248/14/240.8 EPA 8260D/5030B3.1Vinyl Chloride ug/L 8/14/248/14/243.0 EPA 8260D/5030B7.3Xylenes, total Project Name: BSS CtF WO#: 24H0884 www.ChemtechFord.com Page 3 of 14Page 3 of 14 xx Chemtech-Ford Laboratories Serving the Intermountain West Since 1953 Certificate of Analysis 9632 South 500 West Sandy, UT 84070 O:(801) 262-7299 F: (866) 792-0093 www.ChemtechFord.com Stantec Consulting Inc. John Russell 2890 East Cottonwood Parkway, Suite 300 Salt Lake City, UT 84121 PO#: Receipt: Date Reported: Project Name: 203723323 8/9/24 14:50 @ 3.3 °C 8/21/2024 BSS Report Footnotes Abbreviations ND = Not detected at the corresponding Minimum Reporting Limit (MRL). 1 mg/L = one milligram per liter or 1 mg/kg = one milligram per kilogram = 1 part per million. 1 ug/L = one microgram per liter or 1 ug/kg = one microgram per kilogram = 1 part per billion. 1 ng/L = one nanogram per liter or 1 ng/kg = one nanogram per kilogram = 1 part per trillion. On calculated parameters, there may be a slight difference between summing the rounded values shown on the report vs the unrounded values used in the calculation. Flag Descriptions J = Detected but below the Reporting Limit; therefore, result is an estimated concentration (CLP J-Flag). J-LOW-L = Estimated low due to low recovery of LCS Project Name: BSS CtF WO#: 24H0884 www.ChemtechFord.com Page 4 of 14Page 4 of 14 Page 5 of 14 QC Report for Work Order (WO) - 24H0884 % Rec RPD RPD Max MRL DFResultSpk ValueLimitsSource ConcAnalyte Blank - EPA 8260D QC Sample ID: BYH0685-BLK1 Batch: BYH0685 Date Prepared: 08/14/2024 Date Analyzed: 08/14/2024 1,1,1,2-Tetrachloroethane ND 1.0 1.00 1,1,1-Trichloroethane ND 1.0 1.00 1,1,2,2-Tetrachloroethane ND 1.0 1.00 1,1,2-Trichloroethane ND 1.0 1.00 1,1,2-Trichlorotrifluoroethane ND 1.0 1.00 1,1-Dichloroethane ND 1.0 1.00 1,1-Dichloroethene ND 1.0 1.00 1,1-Dichloropropene ND 1.0 1.00 1,2,3-Trichlorobenzene ND 1.0 1.00 1,2,3-Trichloropropane ND 1.0 1.00 1,2,4-Trichlorobenzene ND 1.0 1.00 1,2,4-Trimethylbenzene ND 1.0 1.00 1,2-Dibromo-3-chloropropane ND 1.0 1.00 1,2-Dibromoethane (EDB)ND 1.0 1.00 1,2-Dichlorobenzene ND 1.0 1.00 1,2-Dichloroethane ND 1.0 1.00 1,2-Dichloropropane ND 1.0 1.00 1,3,5-Trimethylbenzene ND 1.0 1.00 1,3-Dichlorobenzene ND 1.0 1.00 1,3-Dichloropropane ND 1.0 1.00 1,4-Dichlorobenzene ND 1.0 1.00 2,2-Dichloropropane ND 1.0 1.00 2-Chlorotoluene ND 1.0 1.00 2-Hexanone ND 10.0 1.00 2-Nitropropane ND 2.0 1.00 4-Chlorotoluene ND 1.0 1.00 Acetone ND 20.0 1.00 Acrylonitrile ND 5.0 1.00 Benzene ND 0.4 1.00 Bromobenzene ND 1.0 1.00 Bromochloromethane ND 1.0 1.00 Bromodichloromethane ND 1.0 1.00 Bromoform ND 1.0 1.00 Bromomethane ND 2.0 1.00 Carbon Disulfide ND 2.0 1.00 Carbon Tetrachloride ND 1.0 1.00 Chlorobenzene ND 1.0 1.00 Chloroethane ND 1.0 1.00 Chloroform ND 1.0 1.00 Chloromethane ND 1.0 1.00 cis-1,2-Dichloroethene ND 1.0 1.00 cis-1,3-Dichloropropene ND 1.0 1.00 Cyclohexanone ND 10.0 1.00 Dibromochloromethane ND 1.0 1.00 Dibromomethane ND 1.0 1.00 Dichlorodifluoromethane ND 1.0 1.00 Ethyl Acetate ND 2.0 1.00 Ethyl Ether ND 1.0 1.00 Ethylbenzene ND 1.0 1.00 Hexachlorobutadiene ND 1.0 1.00 Isobutanol ND 20.0 1.00 CtF WO#: 24H0884 www.ChemtechFord.com Page 6 of 14 QC Report for Work Order (WO) - 24H0884 % Rec RPD RPD Max MRL DFResultSpk ValueLimitsSource ConcAnalyte Blank - EPA 8260D (cont.) QC Sample ID: BYH0685-BLK1 Batch: BYH0685 Date Prepared: 08/14/2024 Date Analyzed: 08/14/2024 Isopropylbenzene ND 1.0 1.00 Methyl Ethyl Ketone ND 2.0 1.00 Methyl Isobutyl Ketone ND 5.0 1.00 Methylene Chloride ND 1.0 1.00 Methyl-tert-butyl ether (MTBE)ND 0.6 1.00 Naphthalene ND 1.0 1.00 n-Butyl Alcohol ND 50.0 1.00 n-Butylbenzene ND 1.0 1.00 n-Propyl Benzene ND 1.0 1.00 Pentachloroethane ND 1.0 1.00 p-Isopropyltoluene ND 1.0 1.00 sec-Butyl Benzene ND 1.0 1.00 Styrene ND 1.0 1.00 tert-Butylbenzene ND 1.0 1.00 Tetrachloroethene ND 1.0 1.00 Toluene ND 1.0 1.00 trans-1,2-Dichloroethene ND 1.0 1.00 trans-1,3-Dichloropropene ND 1.0 1.00 Trichloroethene ND 1.0 1.00 Trichlorofluoromethane ND 1.0 1.00 Vinyl Chloride ND 0.8 1.00 Xylenes, total ND 3.0 1.00 Calibration Check - EPA 8260D QC Sample ID: BYH0685-CCV1 Batch: BYH0685 Date Prepared: 08/14/2024 Date Analyzed: 08/14/2024 1,1,1,2-Tetrachloroethane 104 80 - 120 10.4 10.0 1.0 1.00 1,1,1-Trichloroethane 92.5 80 - 120 9.25 10.0 1.0 1.00 1,1,2,2-Tetrachloroethane 116 80 - 120 11.6 10.0 1.0 1.00 1,1,2-Trichloroethane 100 80 - 120 10.0 10.0 1.0 1.00 1,1,2-Trichlorotrifluoroethane 131 80 - 120 13.1 10.0 1.0 1.00 HB - Recovery for this parameter exceeded the upper acceptance limit. Associated sample(s) were all non-detect and therefore accepted and reported for this parameter. 1,1-Dichloroethane 80.4 80 - 120 8.04 10.0 1.0 1.00 1,1-Dichloroethene 87.1 80 - 120 8.71 10.0 1.0 1.00 1,1-Dichloropropene 95.0 80 - 120 9.50 10.0 1.0 1.00 1,2,3-Trichlorobenzene 120 80 - 120 12.0 10.0 1.0 1.00 1,2,3-Trichloropropane 111 80 - 120 11.1 10.0 1.0 1.00 1,2,4-Trichlorobenzene 121 80 - 120 12.1 10.0 1.0 1.00 HB - Recovery for this parameter exceeded the upper acceptance limit. Associated sample(s) were all non-detect and therefore accepted and reported for this parameter. 1,2,4-Trimethylbenzene 114 80 - 120 11.4 10.0 1.0 1.00 1,2-Dibromo-3-chloropropane 116 80 - 120 11.6 10.0 1.0 1.00 1,2-Dibromoethane (EDB)102 80 - 120 10.2 10.0 1.0 1.00 1,2-Dichlorobenzene 114 80 - 120 11.4 10.0 1.0 1.00 1,2-Dichloroethane 90.4 80 - 120 9.04 10.0 1.0 1.00 1,2-Dichloropropane 96.7 80 - 120 9.67 10.0 1.0 1.00 1,3,5-Trimethylbenzene 112 80 - 120 11.2 10.0 1.0 1.00 1,3-Dichlorobenzene 113 80 - 120 11.3 10.0 1.0 1.00 1,3-Dichloropropane 97.5 80 - 120 9.75 10.0 1.0 1.00 1,4-Dichlorobenzene 114 80 - 120 11.4 10.0 1.0 1.00 2,2-Dichloropropane 79.5 80 - 120 7.95 10.0 1.0 1.00 CtF WO#: 24H0884 www.ChemtechFord.com Page 7 of 14 QC Report for Work Order (WO) - 24H0884 % Rec RPD RPD Max MRL DFResultSpk ValueLimitsSource ConcAnalyte Calibration Check - EPA 8260D (cont.) QC Sample ID: BYH0685-CCV1 Batch: BYH0685 Date Prepared: 08/14/2024 Date Analyzed: 08/14/2024 LLV-1 - Recovery for this analyte is below established control limits. Low Level Verification confirms adequate sensitivity for this analyte at the reporting limit and non-detect sample analytes are acceptable for reporting. 2-Chlorotoluene 108 80 - 120 10.8 10.0 1.0 1.00 2-Hexanone 114 80 - 120 11.4 10.0 10.0 1.00 2-Nitropropane 72.0 80 - 120 21.6 30.0 2.0 1.00 LLV-1 - Recovery for this analyte is below established control limits. Low Level Verification confirms adequate sensitivity for this analyte at the reporting limit and non-detect sample analytes are acceptable for reporting. 4-Chlorotoluene 110 80 - 120 11.0 10.0 1.0 1.00 Acetone 103 80 - 120 103 100 20.0 1.00 Acrylonitrile 97.7 80 - 120 48.8 50.0 5.0 1.00 Benzene 96.2 80 - 120 9.62 10.0 0.4 1.00 Bromobenzene 105 80 - 120 10.5 10.0 1.0 1.00 Bromochloromethane 87.3 80 - 120 8.73 10.0 1.0 1.00 Bromodichloromethane 98.1 80 - 120 9.81 10.0 1.0 1.00 Bromoform 107 80 - 120 10.7 10.0 1.0 1.00 Bromomethane 68.5 80 - 120 6.85 10.0 2.0 1.00 LLV-1 - Recovery for this analyte is below established control limits. Low Level Verification confirms adequate sensitivity for this analyte at the reporting limit and non-detect sample analytes are acceptable for reporting. Carbon Disulfide 123 80 - 120 12.3 10.0 2.0 1.00 HB - Recovery for this parameter exceeded the upper acceptance limit. Associated sample(s) were all non-detect and therefore accepted and reported for this parameter. Carbon Tetrachloride 98.8 80 - 120 9.88 10.0 1.0 1.00 Chlorobenzene 102 80 - 120 10.2 10.0 1.0 1.00 Chloroethane 93.4 80 - 120 9.34 10.0 1.0 1.00 Chloroform 95.3 80 - 120 9.53 10.0 1.0 1.00 Chloromethane 85.5 80 - 120 8.55 10.0 1.0 1.00 cis-1,2-Dichloroethene 92.8 80 - 120 9.28 10.0 1.0 1.00 cis-1,3-Dichloropropene 98.3 80 - 120 9.83 10.0 1.0 1.00 Cyclohexanone 68.9 80 - 120 68.9 100 10.0 1.00 LLV-1 - Recovery for this analyte is below established control limits. Low Level Verification confirms adequate sensitivity for this analyte at the reporting limit and non-detect sample analytes are acceptable for reporting. Dibromochloromethane 102 80 - 120 10.2 10.0 1.0 1.00 Dibromomethane 101 80 - 120 10.1 10.0 1.0 1.00 Dichlorodifluoromethane 87.3 80 - 120 8.73 10.0 1.0 1.00 Ethyl Acetate 108 80 - 120 21.6 20.0 2.0 1.00 Ethyl Ether 99.8 80 - 120 9.98 10.0 1.0 1.00 Ethylbenzene 103 80 - 120 10.3 10.0 1.0 1.00 Hexachlorobutadiene 120 80 - 120 12.0 10.0 1.0 1.00 Isobutanol 93.5 80 - 120 187 200 20.0 1.00 Isopropylbenzene 112 80 - 120 11.2 10.0 1.0 1.00 Methyl Ethyl Ketone 168 80 - 120 16.8 10.0 2.0 1.00 HB - Recovery for this parameter exceeded the upper acceptance limit. Associated sample(s) were all non-detect and therefore accepted and reported for this parameter. Methyl Isobutyl Ketone 102 80 - 120 10.2 10.0 5.0 1.00 Methylene Chloride 89.8 80 - 120 8.98 10.0 1.0 1.00 Methyl-tert-butyl ether (MTBE)83.9 80 - 120 8.39 10.0 0.6 1.00 Naphthalene 115 80 - 120 11.5 10.0 1.0 1.00 n-Butyl Alcohol 86.3 80 - 120 86.3 100 50.0 1.00 n-Butylbenzene 122 80 - 120 12.2 10.0 1.0 1.00 HB - Recovery for this parameter exceeded the upper acceptance limit. Associated sample(s) were all non-detect and therefore accepted and reported for this parameter. n-Propyl Benzene 113 80 - 120 11.3 10.0 1.0 1.00 CtF WO#: 24H0884 www.ChemtechFord.com Page 8 of 14 QC Report for Work Order (WO) - 24H0884 % Rec RPD RPD Max MRL DFResultSpk ValueLimitsSource ConcAnalyte Calibration Check - EPA 8260D (cont.) QC Sample ID: BYH0685-CCV1 Batch: BYH0685 Date Prepared: 08/14/2024 Date Analyzed: 08/14/2024 Pentachloroethane 116 80 - 120 11.6 10.0 1.0 1.00 p-Isopropyltoluene 118 80 - 120 11.8 10.0 1.0 1.00 sec-Butyl Benzene 119 80 - 120 11.9 10.0 1.0 1.00 Styrene 108 80 - 120 10.8 10.0 1.0 1.00 tert-Butylbenzene 117 80 - 120 11.7 10.0 1.0 1.00 Tetrachloroethene 91.8 80 - 120 9.18 10.0 1.0 1.00 Toluene 95.2 80 - 120 9.52 10.0 1.0 1.00 trans-1,2-Dichloroethene 87.2 80 - 120 8.72 10.0 1.0 1.00 trans-1,3-Dichloropropene 99.0 80 - 120 9.90 10.0 1.0 1.00 Trichloroethene 96.7 80 - 120 9.67 10.0 1.0 1.00 Trichlorofluoromethane 99.1 80 - 120 9.91 10.0 1.0 1.00 Vinyl Chloride 96.2 80 - 120 9.62 10.0 0.8 1.00 Xylenes, total 107 80 - 120 32.0 30.0 3.0 1.00 LCS - EPA 8260D QC Sample ID: BYH0685-BS1 Batch: BYH0685 Date Prepared: 08/14/2024 Date Analyzed: 08/14/2024 1,1,1,2-Tetrachloroethane 97.9 70 - 130 9.79 10.0 1.0 1.00 1,1,1-Trichloroethane 77.6 70 - 130 7.76 10.0 1.0 1.00 1,1,2,2-Tetrachloroethane 113 70 - 130 11.3 10.0 1.0 1.00 1,1,2-Trichloroethane 96.1 70 - 130 9.61 10.0 1.0 1.00 1,1,2-Trichlorotrifluoroethane 103 70 - 130 10.3 10.0 1.0 1.00 1,1-Dichloroethane 68.0 70 - 130 6.80 10.0 1.0 1.00 J-LOW-L - Estimated low due to low recovery of LCS 1,1-Dichloroethene 69.8 70 - 130 6.98 10.0 1.0 1.00 J-LOW-L - Estimated low due to low recovery of LCS 1,1-Dichloropropene 78.0 70 - 130 7.80 10.0 1.0 1.00 1,2,3-Trichlorobenzene 116 70 - 130 11.6 10.0 1.0 1.00 1,2,3-Trichloropropane 110 70 - 130 11.0 10.0 1.0 1.00 1,2,4-Trichlorobenzene 117 70 - 130 11.7 10.0 1.0 1.00 1,2,4-Trimethylbenzene 102 70 - 130 10.2 10.0 1.0 1.00 1,2-Dibromo-3-chloropropane 113 70 - 130 11.3 10.0 1.0 1.00 1,2-Dibromoethane (EDB)98.9 70 - 130 9.89 10.0 1.0 1.00 1,2-Dichlorobenzene 108 70 - 130 10.8 10.0 1.0 1.00 1,2-Dichloroethane 87.0 70 - 130 8.70 10.0 1.0 1.00 1,2-Dichloropropane 89.8 70 - 130 8.98 10.0 1.0 1.00 1,3,5-Trimethylbenzene 102 70 - 130 10.2 10.0 1.0 1.00 1,3-Dichlorobenzene 106 70 - 130 10.6 10.0 1.0 1.00 1,3-Dichloropropane 96.9 70 - 130 9.69 10.0 1.0 1.00 1,4-Dichlorobenzene 107 70 - 130 10.7 10.0 1.0 1.00 2,2-Dichloropropane 65.9 70 - 130 6.59 10.0 1.0 1.00 J-LOW-L - Estimated low due to low recovery of LCS 2-Chlorotoluene 98.4 70 - 130 9.84 10.0 1.0 1.00 2-Hexanone 112 70 - 130 11.2 10.0 10.0 1.00 2-Nitropropane 65.8 70 - 130 19.8 30.0 2.0 1.00 J-LOW-L - Estimated low due to low recovery of LCS 4-Chlorotoluene 100 70 - 130 10.0 10.0 1.0 1.00 Acetone 96.1 70 - 130 96.1 100 20.0 1.00 Acrylonitrile 90.1 70 - 130 45.1 50.0 5.0 1.00 Benzene 85.8 70 - 130 8.58 10.0 0.4 1.00 Bromobenzene 98.7 70 - 130 9.87 10.0 1.0 1.00 CtF WO#: 24H0884 www.ChemtechFord.com Page 9 of 14 QC Report for Work Order (WO) - 24H0884 % Rec RPD RPD Max MRL DFResultSpk ValueLimitsSource ConcAnalyte LCS - EPA 8260D (cont.) QC Sample ID: BYH0685-BS1 Batch: BYH0685 Date Prepared: 08/14/2024 Date Analyzed: 08/14/2024 Bromochloromethane 78.4 70 - 130 7.84 10.0 1.0 1.00 Bromodichloromethane 92.6 70 - 130 9.26 10.0 1.0 1.00 Bromoform 105 70 - 130 10.5 10.0 1.0 1.00 Bromomethane 63.1 70 - 130 6.31 10.0 2.0 1.00 J-LOW-L - Estimated low due to low recovery of LCS Carbon Disulfide 96.9 70 - 130 9.69 10.0 2.0 1.00 Carbon Tetrachloride 81.4 70 - 130 8.14 10.0 1.0 1.00 Chlorobenzene 93.0 70 - 130 9.30 10.0 1.0 1.00 Chloroethane 72.6 70 - 130 7.26 10.0 1.0 1.00 Chloroform 82.7 70 - 130 8.27 10.0 1.0 1.00 Chloromethane 68.3 70 - 130 6.83 10.0 1.0 1.00 J-LOW-L - Estimated low due to low recovery of LCS cis-1,2-Dichloroethene 81.7 70 - 130 8.17 10.0 1.0 1.00 cis-1,3-Dichloropropene 92.8 70 - 130 9.28 10.0 1.0 1.00 Cyclohexanone 62.8 70 - 130 62.8 100 10.0 1.00 J-LOW-L - Estimated low due to low recovery of LCS Dibromochloromethane 99.2 70 - 130 9.92 10.0 1.0 1.00 Dibromomethane 95.1 70 - 130 9.51 10.0 1.0 1.00 Dichlorodifluoromethane 62.9 70 - 130 6.29 10.0 1.0 1.00 J-LOW-L - Estimated low due to low recovery of LCS Ethyl Acetate 96.8 70 - 130 19.4 20.0 2.0 1.00 Ethyl Ether 90.9 70 - 130 9.09 10.0 1.0 1.00 Ethylbenzene 90.2 70 - 130 9.02 10.0 1.0 1.00 Hexachlorobutadiene 106 70 - 130 10.6 10.0 1.0 1.00 Isobutanol 86.9 70 - 130 174 200 20.0 1.00 Isopropylbenzene 96.4 70 - 130 9.64 10.0 1.0 1.00 Methyl Ethyl Ketone 162 70 - 130 16.2 10.0 2.0 1.00 HB - Recovery for this parameter exceeded the upper acceptance limit. Associated sample(s) were all non-detect and therefore accepted and reported for this parameter. Methyl Isobutyl Ketone 98.4 70 - 130 9.84 10.0 5.0 1.00 Methylene Chloride 79.0 70 - 130 7.90 10.0 1.0 1.00 Methyl-tert-butyl ether (MTBE)78.4 70 - 130 7.84 10.0 0.6 1.00 Naphthalene 114 70 - 130 11.4 10.0 1.0 1.00 n-Butyl Alcohol 87.6 70 - 130 87.6 100 50.0 1.00 n-Butylbenzene 106 70 - 130 10.6 10.0 1.0 1.00 n-Propyl Benzene 97.5 70 - 130 9.75 10.0 1.0 1.00 Pentachloroethane 96.2 70 - 130 9.62 10.0 1.0 1.00 p-Isopropyltoluene 104 70 - 130 10.4 10.0 1.0 1.00 sec-Butyl Benzene 102 70 - 130 10.2 10.0 1.0 1.00 Styrene 99.3 70 - 130 9.93 10.0 1.0 1.00 tert-Butylbenzene 100 70 - 130 10.0 10.0 1.0 1.00 Tetrachloroethene 88.1 70 - 130 8.81 10.0 1.0 1.00 Toluene 84.4 70 - 130 8.44 10.0 1.0 1.00 trans-1,2-Dichloroethene 74.4 70 - 130 7.44 10.0 1.0 1.00 trans-1,3-Dichloropropene 94.6 70 - 130 9.46 10.0 1.0 1.00 Trichloroethene 83.2 70 - 130 8.32 10.0 1.0 1.00 Trichlorofluoromethane 73.9 70 - 130 7.39 10.0 1.0 1.00 Vinyl Chloride 74.2 70 - 130 7.42 10.0 0.8 1.00 Xylenes, total 95.2 70 - 130 28.6 30.0 3.0 1.00 Matrix Spike - EPA 8260D CtF WO#: 24H0884 www.ChemtechFord.com Page 10 of 14 QC Report for Work Order (WO) - 24H0884 % Rec RPD RPD Max MRL DFResultSpk ValueLimitsSource ConcAnalyte Matrix Spike - EPA 8260D (cont.) QC Sample ID: BYH0685-MS1 QC Source Sample: 24H0884-01Batch: BYH0685 Date Prepared: 08/14/2024 Date Analyzed: 08/14/2024 1,1,1,2-Tetrachloroethane 103 70 - 130 51.6 ND 50.0 5.0 1.00 1,1,1-Trichloroethane 88.8 70 - 130 44.4 ND 50.0 5.0 1.00 1,1,2,2-Tetrachloroethane 112 70 - 130 56.0 ND 50.0 5.0 1.00 1,1,2-Trichloroethane 94.4 70 - 130 47.2 ND 50.0 5.0 1.00 1,1,2-Trichlorotrifluoroethane 121 70 - 130 60.6 ND 50.0 5.0 1.00 1,1-Dichloroethane 82.9 70 - 130 41.4 ND 50.0 5.0 1.00 1,1-Dichloroethene 82.2 70 - 130 41.1 ND 50.0 5.0 1.00 1,1-Dichloropropene 91.3 70 - 130 45.6 ND 50.0 5.0 1.00 1,2,3-Trichlorobenzene 112 70 - 130 56.2 ND 50.0 5.0 1.00 1,2,3-Trichloropropane 104 70 - 130 52.2 ND 50.0 5.0 1.00 1,2,4-Trichlorobenzene 113 70 - 130 56.6 ND 50.0 5.0 1.00 1,2,4-Trimethylbenzene 106 70 - 130 55.0 2.19 50.0 5.0 1.00 1,2-Dibromo-3-chloropropane 99.7 70 - 130 49.8 ND 50.0 5.0 1.00 1,2-Dibromoethane (EDB)100 70 - 130 50.0 ND 50.0 5.0 1.00 1,2-Dichlorobenzene 106 70 - 130 52.8 ND 50.0 5.0 1.00 1,2-Dichloroethane 91.8 70 - 130 45.9 ND 50.0 5.0 1.00 1,2-Dichloropropane 94.8 70 - 130 47.4 ND 50.0 5.0 1.00 1,3,5-Trimethylbenzene 116 70 - 130 57.8 ND 50.0 5.0 1.00 1,3-Dichlorobenzene 108 70 - 130 54.2 ND 50.0 5.0 1.00 1,3-Dichloropropane 97.3 70 - 130 48.6 ND 50.0 5.0 1.00 1,4-Dichlorobenzene 104 70 - 130 51.9 ND 50.0 5.0 1.00 2,2-Dichloropropane 96.1 70 - 130 48.0 ND 50.0 5.0 1.00 2-Chlorotoluene 107 70 - 130 53.4 ND 50.0 5.0 1.00 2-Hexanone 104 70 - 130 51.8 ND 50.0 50.0 1.00 2-Nitropropane 78.2 70 - 130 117 ND 150 10.0 1.00 4-Chlorotoluene 107 70 - 130 53.6 ND 50.0 5.0 1.00 Acetone 93.2 70 - 130 466 ND 500 100 1.00 Acrylonitrile 89.2 70 - 130 223 ND 250 25.0 1.00 Benzene 94.9 70 - 130 47.4 ND 50.0 2.0 1.00 Bromobenzene 102 70 - 130 51.0 ND 50.0 5.0 1.00 Bromochloromethane 82.8 70 - 130 41.4 ND 50.0 5.0 1.00 Bromodichloromethane 96.5 70 - 130 48.2 ND 50.0 5.0 1.00 Bromoform 102 70 - 130 51.0 ND 50.0 5.0 1.00 Bromomethane 75.2 70 - 130 37.6 ND 50.0 10.0 1.00 Carbon Disulfide 119 70 - 130 59.3 ND 50.0 10.0 1.00 Carbon Tetrachloride 89.7 70 - 130 44.8 ND 50.0 5.0 1.00 Chlorobenzene 101 70 - 130 50.3 ND 50.0 5.0 1.00 Chloroethane 89.7 70 - 130 44.8 ND 50.0 5.0 1.00 Chloroform 86.1 70 - 130 43.0 ND 50.0 5.0 1.00 Chloromethane 77.2 70 - 130 38.6 ND 50.0 5.0 1.00 cis-1,2-Dichloroethene 84.9 70 - 130 46.4 3.90 50.0 5.0 1.00 cis-1,3-Dichloropropene 94.7 70 - 130 47.4 ND 50.0 5.0 1.00 Cyclohexanone 49.9 70 - 130 250 ND 500 50.0 1.00 QM-RPD - The recovery was outside acceptance limits for the MS and/or MSD. The RPD between the MS and MSD was acceptable and indicates the recovery is due to matrix interference. The batch was accepted based on the acceptable recovery of the LCS and the RPD. Dibromochloromethane 100 70 - 130 50.0 ND 50.0 5.0 1.00 Dibromomethane 96.0 70 - 130 48.0 ND 50.0 5.0 1.00 Dichlorodifluoromethane 78.4 70 - 130 39.2 ND 50.0 5.0 1.00 Ethyl Acetate 91.4 70 - 130 91.4 ND 100 10.0 1.00 Ethyl Ether 91.9 70 - 130 46.0 ND 50.0 5.0 1.00 CtF WO#: 24H0884 www.ChemtechFord.com Page 11 of 14 QC Report for Work Order (WO) - 24H0884 % Rec RPD RPD Max MRL DFResultSpk ValueLimitsSource ConcAnalyte Matrix Spike - EPA 8260D (cont.) QC Sample ID: BYH0685-MS1 QC Source Sample: 24H0884-01Batch: BYH0685 Date Prepared: 08/14/2024 Date Analyzed: 08/14/2024 Ethylbenzene 104 70 - 130 52.0 ND 50.0 5.0 1.00 Hexachlorobutadiene 113 70 - 130 56.6 ND 50.0 5.0 1.00 Isobutanol 80.7 70 - 130 807 ND 1000 100 1.00 Isopropylbenzene 108 70 - 130 54.2 ND 50.0 5.0 1.00 Methyl Ethyl Ketone 146 70 - 130 72.9 ND 50.0 10.0 1.00 QM-RPD - The recovery was outside acceptance limits for the MS and/or MSD. The RPD between the MS and MSD was acceptable and indicates the recovery is due to matrix interference. The batch was accepted based on the acceptable recovery of the LCS and the RPD. Methyl Isobutyl Ketone 96.3 70 - 130 48.2 ND 50.0 25.0 1.00 Methylene Chloride 84.1 70 - 130 42.0 ND 50.0 5.0 1.00 Methyl-tert-butyl ether (MTBE)80.6 70 - 130 40.3 ND 50.0 3.0 1.00 Naphthalene 94.5 70 - 130 68.0 20.7 50.0 5.0 1.00 n-Butyl Alcohol 83.4 70 - 130 417 ND 500 250 1.00 n-Butylbenzene 113 70 - 130 56.3 ND 50.0 5.0 1.00 n-Propyl Benzene 108 70 - 130 54.2 ND 50.0 5.0 1.00 Pentachloroethane 108 70 - 130 54.2 ND 50.0 5.0 1.00 p-Isopropyltoluene 109 70 - 130 54.4 ND 50.0 5.0 1.00 sec-Butyl Benzene 109 70 - 130 54.4 ND 50.0 5.0 1.00 Styrene 107 70 - 130 53.4 ND 50.0 5.0 1.00 tert-Butylbenzene 109 70 - 130 54.4 ND 50.0 5.0 1.00 Tetrachloroethene 91.6 70 - 130 45.8 ND 50.0 5.0 1.00 Toluene 92.5 70 - 130 50.3 4.06 50.0 5.0 1.00 trans-1,2-Dichloroethene 85.9 70 - 130 43.0 ND 50.0 5.0 1.00 trans-1,3-Dichloropropene 93.5 70 - 130 46.8 ND 50.0 5.0 1.00 Trichloroethene 94.4 70 - 130 47.2 ND 50.0 5.0 1.00 Trichlorofluoromethane 91.0 70 - 130 45.5 ND 50.0 5.0 1.00 Vinyl Chloride 87.7 70 - 130 47.0 3.11 50.0 4.0 1.00 Xylenes, total 106 70 - 130 166 7.32 150 15.0 1.00 Matrix Spike Dup - EPA 8260D QC Sample ID: BYH0685-MSD1 QC Source Sample: 24H0884-01Batch: BYH0685 Date Prepared: 08/14/2024 Date Analyzed: 08/14/2024 1,1,1,2-Tetrachloroethane 103 0.583 70 - 130 20 51.4 ND 50.0 5.0 1.00 1,1,1-Trichloroethane 88.4 0.451 70 - 130 20 44.2 ND 50.0 5.0 1.00 1,1,2,2-Tetrachloroethane 111 0.988 70 - 130 20 55.4 ND 50.0 5.0 1.00 1,1,2-Trichloroethane 97.6 3.33 70 - 130 20 48.8 ND 50.0 5.0 1.00 1,1,2-Trichlorotrifluoroethane 118 3.02 70 - 130 20 58.8 ND 50.0 5.0 1.00 1,1-Dichloroethane 79.8 3.81 70 - 130 20 39.9 ND 50.0 5.0 1.00 1,1-Dichloroethene 79.4 3.47 70 - 130 20 39.7 ND 50.0 5.0 1.00 1,1-Dichloropropene 86.4 5.51 70 - 130 20 43.2 ND 50.0 5.0 1.00 1,2,3-Trichlorobenzene 112 0.00 70 - 130 20 56.2 ND 50.0 5.0 1.00 1,2,3-Trichloropropane 104 0.962 70 - 130 20 51.8 ND 50.0 5.0 1.00 1,2,4-Trichlorobenzene 113 0.00 70 - 130 20 56.6 ND 50.0 5.0 1.00 1,2,4-Trimethylbenzene 101 3.89 70 - 130 20 52.9 2.19 50.0 5.0 1.00 1,2-Dibromo-3-chloropropane 108 8.45 70 - 130 20 54.2 ND 50.0 5.0 1.00 1,2-Dibromoethane (EDB)102 1.39 70 - 130 20 50.8 ND 50.0 5.0 1.00 1,2-Dichlorobenzene 103 2.01 70 - 130 20 51.7 ND 50.0 5.0 1.00 1,2-Dichloroethane 91.5 0.327 70 - 130 20 45.8 ND 50.0 5.0 1.00 1,2-Dichloropropane 94.3 0.529 70 - 130 20 47.2 ND 50.0 5.0 1.00 1,3,5-Trimethylbenzene 107 7.45 70 - 130 20 53.6 ND 50.0 5.0 1.00 1,3-Dichlorobenzene 103 5.50 70 - 130 20 51.3 ND 50.0 5.0 1.00 1,3-Dichloropropane 100 2.94 70 - 130 20 50.1 ND 50.0 5.0 1.00 CtF WO#: 24H0884 www.ChemtechFord.com Page 12 of 14 QC Report for Work Order (WO) - 24H0884 % Rec RPD RPD Max MRL DFResultSpk ValueLimitsSource ConcAnalyte Matrix Spike Dup - EPA 8260D (cont.) QC Sample ID: BYH0685-MSD1 QC Source Sample: 24H0884-01Batch: BYH0685 Date Prepared: 08/14/2024 Date Analyzed: 08/14/2024 1,4-Dichlorobenzene 102 1.46 70 - 130 20 51.2 ND 50.0 5.0 1.00 2,2-Dichloropropane 75.5 24.0 70 - 130 20 37.8 ND 50.0 5.0 1.00 RPD-01 - RPD between MS and MSD is outside established limits. Data is acceptable based on MS and MSD being within acceptable recovery limits. 2-Chlorotoluene 99.9 6.68 70 - 130 20 50.0 ND 50.0 5.0 1.00 2-Hexanone 111 6.53 70 - 130 20 55.4 ND 50.0 50.0 1.00 2-Nitropropane 77.2 1.33 70 - 130 20 116 ND 150 10.0 1.00 4-Chlorotoluene 102 4.88 70 - 130 20 51.0 ND 50.0 5.0 1.00 Acetone 96.2 3.14 70 - 130 20 481 ND 500 100 1.00 Acrylonitrile 89.9 0.849 70 - 130 20 225 ND 250 25.0 1.00 Benzene 93.7 1.27 70 - 130 20 46.8 ND 50.0 2.0 1.00 Bromobenzene 99.5 2.48 70 - 130 20 49.8 ND 50.0 5.0 1.00 Bromochloromethane 81.5 1.58 70 - 130 20 40.8 ND 50.0 5.0 1.00 Bromodichloromethane 95.9 0.624 70 - 130 20 48.0 ND 50.0 5.0 1.00 Bromoform 106 3.28 70 - 130 20 52.8 ND 50.0 5.0 1.00 Bromomethane 73.6 2.15 70 - 130 20 36.8 ND 50.0 10.0 1.00 Carbon Disulfide 114 4.39 70 - 130 20 56.8 ND 50.0 10.0 1.00 Carbon Tetrachloride 83.3 7.40 70 - 130 20 41.6 ND 50.0 5.0 1.00 Chlorobenzene 101 0.199 70 - 130 20 50.4 ND 50.0 5.0 1.00 Chloroethane 90.2 0.556 70 - 130 20 45.1 ND 50.0 5.0 1.00 Chloroform 84.2 2.23 70 - 130 20 42.1 ND 50.0 5.0 1.00 Chloromethane 74.6 3.43 70 - 130 20 37.3 ND 50.0 5.0 1.00 cis-1,2-Dichloroethene 85.8 0.966 70 - 130 20 46.8 3.90 50.0 5.0 1.00 cis-1,3-Dichloropropene 95.8 1.15 70 - 130 20 47.9 ND 50.0 5.0 1.00 Cyclohexanone 48.3 3.24 70 - 130 20 242 ND 500 50.0 1.00 QM-RPD - The recovery was outside acceptance limits for the MS and/or MSD. The RPD between the MS and MSD was acceptable and indicates the recovery is due to matrix interference. The batch was accepted based on the acceptable recovery of the LCS and the RPD. Dibromochloromethane 101 0.498 70 - 130 20 50.3 ND 50.0 5.0 1.00 Dibromomethane 97.4 1.45 70 - 130 20 48.7 ND 50.0 5.0 1.00 Dichlorodifluoromethane 76.4 2.58 70 - 130 20 38.2 ND 50.0 5.0 1.00 Ethyl Acetate 97.8 6.82 70 - 130 20 97.8 ND 100 10.0 1.00 Ethyl Ether 92.9 1.08 70 - 130 20 46.4 ND 50.0 5.0 1.00 Ethylbenzene 102 2.14 70 - 130 20 51.0 ND 50.0 5.0 1.00 Hexachlorobutadiene 110 3.32 70 - 130 20 54.8 ND 50.0 5.0 1.00 Isobutanol 78.8 2.46 70 - 130 20 788 ND 1000 100 1.00 Isopropylbenzene 104 4.52 70 - 130 20 51.8 ND 50.0 5.0 1.00 Methyl Ethyl Ketone 152 3.97 70 - 130 20 75.8 ND 50.0 10.0 1.00 QM-RPD - The recovery was outside acceptance limits for the MS and/or MSD. The RPD between the MS and MSD was acceptable and indicates the recovery is due to matrix interference. The batch was accepted based on the acceptable recovery of the LCS and the RPD. Methyl Isobutyl Ketone 98.8 2.56 70 - 130 20 49.4 ND 50.0 25.0 1.00 Methylene Chloride 79.9 5.12 70 - 130 20 40.0 ND 50.0 5.0 1.00 Methyl-tert-butyl ether (MTBE)76.2 5.61 70 - 130 20 38.1 ND 50.0 3.0 1.00 Naphthalene 100 4.18 70 - 130 20 70.8 20.7 50.0 5.0 1.00 n-Butyl Alcohol 85.9 2.92 70 - 130 20 430 ND 500 250 1.00 n-Butylbenzene 108 4.17 70 - 130 20 54.0 ND 50.0 5.0 1.00 n-Propyl Benzene 102 5.69 70 - 130 20 51.2 ND 50.0 5.0 1.00 Pentachloroethane 106 2.71 70 - 130 20 52.8 ND 50.0 5.0 1.00 p-Isopropyltoluene 104 4.61 70 - 130 20 52.0 ND 50.0 5.0 1.00 sec-Butyl Benzene 104 4.80 70 - 130 20 51.9 ND 50.0 5.0 1.00 Styrene 105 1.80 70 - 130 20 52.4 ND 50.0 5.0 1.00 CtF WO#: 24H0884 www.ChemtechFord.com Page 13 of 14 QC Report for Work Order (WO) - 24H0884 % Rec RPD RPD Max MRL DFResultSpk ValueLimitsSource ConcAnalyte Matrix Spike Dup - EPA 8260D (cont.) QC Sample ID: BYH0685-MSD1 QC Source Sample: 24H0884-01Batch: BYH0685 Date Prepared: 08/14/2024 Date Analyzed: 08/14/2024 tert-Butylbenzene 104 4.41 70 - 130 20 52.1 ND 50.0 5.0 1.00 Tetrachloroethene 90.6 1.10 70 - 130 20 45.3 ND 50.0 5.0 1.00 Toluene 89.8 2.72 70 - 130 20 49.0 4.06 50.0 5.0 1.00 trans-1,2-Dichloroethene 83.9 2.36 70 - 130 20 42.0 ND 50.0 5.0 1.00 trans-1,3-Dichloropropene 96.6 3.26 70 - 130 20 48.3 ND 50.0 5.0 1.00 Trichloroethene 93.6 0.851 70 - 130 20 46.8 ND 50.0 5.0 1.00 Trichlorofluoromethane 88.2 3.13 70 - 130 20 44.1 ND 50.0 5.0 1.00 Vinyl Chloride 85.8 2.04 70 - 130 20 46.0 3.11 50.0 4.0 1.00 Xylenes, total 103 2.04 70 - 130 20 162 7.32 150 15.0 1.00 CtF WO#: 24H0884 www.ChemtechFord.com Page 14 of 14 Login Summary Work Order Number 24H0884 Report To: Stantec Consulting Inc. John Russell 2890 East Cottonwood Parkway, Suite 300 Salt Lake City, UT 84121 Phone: (801) 617-3200 Fax: (801) 266-1671 Invoice To: Stantec Consulting Inc. John Russell 2890 East Cottonwood Parkway, Suite 300 Salt Lake City, UT 84121 Phone :(801) 617-3200 Fax: (801) 266-1671 Please review the data for accuracy and completeness. If there are changes to the information or other concerns, please contact us within 24 hours. Short sample holding times or other issues may make changes difficult if we are not contacted promptly. Project: 08/22/2024 16:00Estimated Completion Date: Delivered by:Walk-in BSS Conditions Upon Receipt Received on Ice: Received Within Holding Time: Sufficient Sample Volume: COC Included: COC Complete: COC matched to bottles:Sample Containers Intact:Headspace Present (VOC): Custody Seals Used:No Yes Yes Yes Yes No Yes Yes Yes 3.3 °CTemperature: Correct Containers: Cooler ID:Cooler #1 * Yes *EPA Guideline Sample Temperature Microbiology - 0 to 10 Deg. C Metals, Radiologicals, Flashpoint - [no requirement] All other parameters - 0 to 6 Deg. C Please Note: Results for samples received outside of the EPA temperature guidelines may be compromised for regulatory purposes. Please check with your regulator if you have questions. WaterMatrix: Site ID: Type: Depth: Sampler:Cody Fauth Analysis Client ID:MW-3 24H0884-01 Sampled:08/09/2024 12:30 Received:08/09/2024 14:50 Field pH:Field Chlorine: Received by:Adriane Tea Sample Comments: QC Source:YesPWSID: Source Code: Sample Point: Monitoring Type: Report to State: MW-3 8260 Low Level Volatiles Page 1 of 2 866.7922.0093 Fax www.ChemtechFord.com Serving the Intermountain West since 1953 801.262.7299 MainSandy, Utah 840709632 South 500 West wko_ChemtechLogin.rpt CLIENT PRO LabName SAMPL LABSAMPID MATRIX SAMPDATE ANADATE BATCH METHODCODE METHODNAMPREPNAME ANALYTE CASNUMBER SURROGAT TIC Result DL RL UNITS RPT BAS DILUSPIKE RECOUPCL LOCL ANALYANOTE Stantec C BSS Chemtech-Ford MW-3 24H0884-01 Water 08/09/2024 12:30:00 08/14/2024 13:31:00 BYH0685 8260 Low Level Volatiles EPA 8260D EPA 5030B 1,2-Dichloroethane-d4 17060-07-0 TRUE FALSE 11.8 ug/L ##NA 1 10.0 118 126 64.2 GLH Stantec C BSS Chemtech-Ford MW-3 24H0884-01 Water 08/09/2024 12:30:00 08/14/2024 13:31:00 BYH0685 8260 Low Level Volatiles EPA 8260D EPA 5030B 1,1,1,2-Tetrachloroethane 630-20-6 FALSE FALSE ND 0.3 1.0 ug/L ##NA 1 GLH Stantec C BSS Chemtech-Ford MW-3 24H0884-01 Water 08/09/2024 12:30:00 08/14/2024 13:31:00 BYH0685 8260 Low Level Volatiles EPA 8260D EPA 5030B 1,2,3-Trichloropropane 96-18-4 FALSE FALSE ND 0.5 1.0 ug/L ##NA 1 GLH Stantec C BSS Chemtech-Ford MW-3 24H0884-01 Water 08/09/2024 12:30:00 08/14/2024 13:31:00 BYH0685 8260 Low Level Volatiles EPA 8260D EPA 5030B 1,2,4-Trichlorobenzene 120-82-1 FALSE FALSE ND 0.9 1.0 ug/L ##NA 1 GLH Stantec C BSS Chemtech-Ford MW-3 24H0884-01 Water 08/09/2024 12:30:00 08/14/2024 13:31:00 BYH0685 8260 Low Level Volatiles EPA 8260D EPA 5030B 1,2,4-Trimethylbenzene 95-63-6 FALSE FALSE 2.2 0.4 1.0 ug/L ##NA 1 GLH Stantec C BSS Chemtech-Ford MW-3 24H0884-01 Water 08/09/2024 12:30:00 08/14/2024 13:31:00 BYH0685 8260 Low Level Volatiles EPA 8260D EPA 5030B 1,2-Dibromo-3-chloropropane 96-12-8 FALSE FALSE ND 0.6 1.0 ug/L ##NA 1 GLH Stantec C BSS Chemtech-Ford MW-3 24H0884-01 Water 08/09/2024 12:30:00 08/14/2024 13:31:00 BYH0685 8260 Low Level Volatiles EPA 8260D EPA 5030B 1,2-Dibromoethane (EDB)106-93-4 FALSE FALSE ND 0.4 1.0 ug/L ##NA 1 GLH Stantec C BSS Chemtech-Ford MW-3 24H0884-01 Water 08/09/2024 12:30:00 08/14/2024 13:31:00 BYH0685 8260 Low Level Volatiles EPA 8260D EPA 5030B 1,2-Dichlorobenzene 95-50-1 FALSE FALSE ND 0.3 1.0 ug/L ##NA 1 GLH Stantec C BSS Chemtech-Ford MW-3 24H0884-01 Water 08/09/2024 12:30:00 08/14/2024 13:31:00 BYH0685 8260 Low Level Volatiles EPA 8260D EPA 5030B 1,2-Dichloroethane 107-06-2 FALSE FALSE ND 0.4 1.0 ug/L ##NA 1 GLH Stantec C BSS Chemtech-Ford MW-3 24H0884-01 Water 08/09/2024 12:30:00 08/14/2024 13:31:00 BYH0685 8260 Low Level Volatiles EPA 8260D EPA 5030B 1,2-Dichloropropane 78-87-5 FALSE FALSE ND 0.2 1.0 ug/L ##NA 1 GLH Stantec C BSS Chemtech-Ford MW-3 24H0884-01 Water 08/09/2024 12:30:00 08/14/2024 13:31:00 BYH0685 8260 Low Level Volatiles EPA 8260D EPA 5030B 1,1,1-Trichloroethane 71-55-6 FALSE FALSE ND 0.4 1.0 ug/L ##NA 1 GLH Stantec C BSS Chemtech-Ford MW-3 24H0884-01 Water 08/09/2024 12:30:00 08/14/2024 13:31:00 BYH0685 8260 Low Level Volatiles EPA 8260D EPA 5030B 1,3,5-Trimethylbenzene 108-67-8 FALSE FALSE 2.1 0.5 1.0 ug/L ##NA 1 GLH Stantec C BSS Chemtech-Ford MW-3 24H0884-01 Water 08/09/2024 12:30:00 08/14/2024 13:31:00 BYH0685 8260 Low Level Volatiles EPA 8260D EPA 5030B 1,3-Dichlorobenzene 541-73-1 FALSE FALSE ND 0.5 1.0 ug/L ##NA 1 GLH Stantec C BSS Chemtech-Ford MW-3 24H0884-01 Water 08/09/2024 12:30:00 08/14/2024 13:31:00 BYH0685 8260 Low Level Volatiles EPA 8260D EPA 5030B 1,3-Dichloropropane 142-28-9 FALSE FALSE ND 0.3 1.0 ug/L ##NA 1 GLH Stantec C BSS Chemtech-Ford MW-3 24H0884-01 Water 08/09/2024 12:30:00 08/14/2024 13:31:00 BYH0685 8260 Low Level Volatiles EPA 8260D EPA 5030B 1,4-Dichlorobenzene 106-46-7 FALSE FALSE ND 0.4 1.0 ug/L ##NA 1 GLH Stantec C BSS Chemtech-Ford MW-3 24H0884-01 Water 08/09/2024 12:30:00 08/14/2024 13:31:00 BYH0685 8260 Low Level Volatiles EPA 8260D EPA 5030B 2,2-Dichloropropane 594-20-7 FALSE FALSE ND 0.6 1.0 ug/L ##NA 1 GLH J-LOW-L Stantec C BSS Chemtech-Ford MW-3 24H0884-01 Water 08/09/2024 12:30:00 08/14/2024 13:31:00 BYH0685 8260 Low Level Volatiles EPA 8260D EPA 5030B 2-Chlorotoluene 95-49-8 FALSE FALSE ND 0.5 1.0 ug/L ##NA 1 GLH Stantec C BSS Chemtech-Ford MW-3 24H0884-01 Water 08/09/2024 12:30:00 08/14/2024 13:31:00 BYH0685 8260 Low Level Volatiles EPA 8260D EPA 5030B 2-Nitropropane 79-46-9 FALSE FALSE ND 1.6 2.0 ug/L ##NA 1 GLH J-LOW-L Stantec C BSS Chemtech-Ford MW-3 24H0884-01 Water 08/09/2024 12:30:00 08/14/2024 13:31:00 BYH0685 8260 Low Level Volatiles EPA 8260D EPA 5030B 4-Chlorotoluene 106-43-4 FALSE FALSE ND 0.3 1.0 ug/L ##NA 1 GLH Stantec C BSS Chemtech-Ford MW-3 24H0884-01 Water 08/09/2024 12:30:00 08/14/2024 13:31:00 BYH0685 8260 Low Level Volatiles EPA 8260D EPA 5030B 4-Bromofluorobenzene 460-00-4 TRUE FALSE 10.1 ug/L ##NA 1 10.0 101 125 71.4 GLH Stantec C BSS Chemtech-Ford MW-3 24H0884-01 Water 08/09/2024 12:30:00 08/14/2024 13:31:00 BYH0685 8260 Low Level Volatiles EPA 8260D EPA 5030B 1,1,2,2-Tetrachloroethane 79-34-5 FALSE FALSE ND 0.5 1.0 ug/L ##NA 1 GLH Stantec C BSS Chemtech-Ford MW-3 24H0884-01 Water 08/09/2024 12:30:00 08/14/2024 13:31:00 BYH0685 8260 Low Level Volatiles EPA 8260D EPA 5030B Acetone 67-64-1 FALSE FALSE 23.0 11.2 20.0 ug/L ##NA 1 GLH Stantec C BSS Chemtech-Ford MW-3 24H0884-01 Water 08/09/2024 12:30:00 08/14/2024 13:31:00 BYH0685 8260 Low Level Volatiles EPA 8260D EPA 5030B Acrylonitrile 107-13-1 FALSE FALSE ND 4.7 5.0 ug/L ##NA 1 GLH Stantec C BSS Chemtech-Ford MW-3 24H0884-01 Water 08/09/2024 12:30:00 08/14/2024 13:31:00 BYH0685 8260 Low Level Volatiles EPA 8260D EPA 5030B Benzene 71-43-2 FALSE FALSE 0.5 0.4 0.4 ug/L ##NA 1 GLH Stantec C BSS Chemtech-Ford MW-3 24H0884-01 Water 08/09/2024 12:30:00 08/14/2024 13:31:00 BYH0685 8260 Low Level Volatiles EPA 8260D EPA 5030B Bromobenzene 108-86-1 FALSE FALSE ND 0.3 1.0 ug/L ##NA 1 GLH Stantec C BSS Chemtech-Ford MW-3 24H0884-01 Water 08/09/2024 12:30:00 08/14/2024 13:31:00 BYH0685 8260 Low Level Volatiles EPA 8260D EPA 5030B Bromochloromethane 74-97-5 FALSE FALSE ND 0.6 1.0 ug/L ##NA 1 GLH Stantec C BSS Chemtech-Ford MW-3 24H0884-01 Water 08/09/2024 12:30:00 08/14/2024 13:31:00 BYH0685 8260 Low Level Volatiles EPA 8260D EPA 5030B Bromodichloromethane 75-27-4 FALSE FALSE ND 0.2 1.0 ug/L ##NA 1 GLH Stantec C BSS Chemtech-Ford MW-3 24H0884-01 Water 08/09/2024 12:30:00 08/14/2024 13:31:00 BYH0685 8260 Low Level Volatiles EPA 8260D EPA 5030B Bromoform 75-25-2 FALSE FALSE ND 0.4 1.0 ug/L ##NA 1 GLH Stantec C BSS Chemtech-Ford MW-3 24H0884-01 Water 08/09/2024 12:30:00 08/14/2024 13:31:00 BYH0685 8260 Low Level Volatiles EPA 8260D EPA 5030B Bromomethane 74-83-9 FALSE FALSE ND 1.2 2.0 ug/L ##NA 1 GLH J-LOW-L Stantec C BSS Chemtech-Ford MW-3 24H0884-01 Water 08/09/2024 12:30:00 08/14/2024 13:31:00 BYH0685 8260 Low Level Volatiles EPA 8260D EPA 5030B Carbon Disulfide 75-15-0 FALSE FALSE ND 0.5 2.0 ug/L ##NA 1 GLH Stantec C BSS Chemtech-Ford MW-3 24H0884-01 Water 08/09/2024 12:30:00 08/14/2024 13:31:00 BYH0685 8260 Low Level Volatiles EPA 8260D EPA 5030B Carbon Tetrachloride 56-23-5 FALSE FALSE ND 0.7 1.0 ug/L ##NA 1 GLH Stantec C BSS Chemtech-Ford MW-3 24H0884-01 Water 08/09/2024 12:30:00 08/14/2024 13:31:00 BYH0685 8260 Low Level Volatiles EPA 8260D EPA 5030B 1,1,2-Trichloroethane 79-00-5 FALSE FALSE ND 0.6 1.0 ug/L ##NA 1 GLH Stantec C BSS Chemtech-Ford MW-3 24H0884-01 Water 08/09/2024 12:30:00 08/14/2024 13:31:00 BYH0685 8260 Low Level Volatiles EPA 8260D EPA 5030B Chlorobenzene 108-90-7 FALSE FALSE ND 0.4 1.0 ug/L ##NA 1 GLH Stantec C BSS Chemtech-Ford MW-3 24H0884-01 Water 08/09/2024 12:30:00 08/14/2024 13:31:00 BYH0685 8260 Low Level Volatiles EPA 8260D EPA 5030B Chloroethane 75-00-3 FALSE FALSE ND 0.7 1.0 ug/L ##NA 1 GLH Stantec C BSS Chemtech-Ford MW-3 24H0884-01 Water 08/09/2024 12:30:00 08/14/2024 13:31:00 BYH0685 8260 Low Level Volatiles EPA 8260D EPA 5030B Chloroform 67-66-3 FALSE FALSE ND 0.4 1.0 ug/L ##NA 1 GLH Stantec C BSS Chemtech-Ford MW-3 24H0884-01 Water 08/09/2024 12:30:00 08/14/2024 13:31:00 BYH0685 8260 Low Level Volatiles EPA 8260D EPA 5030B Chloromethane 74-87-3 FALSE FALSE ND 0.9 1.0 ug/L ##NA 1 GLH J-LOW-L Stantec C BSS Chemtech-Ford MW-3 24H0884-01 Water 08/09/2024 12:30:00 08/14/2024 13:31:00 BYH0685 8260 Low Level Volatiles EPA 8260D EPA 5030B cis-1,2-Dichloroethene 156-59-2 FALSE FALSE 3.9 0.4 1.0 ug/L ##NA 1 GLH Stantec C BSS Chemtech-Ford MW-3 24H0884-01 Water 08/09/2024 12:30:00 08/14/2024 13:31:00 BYH0685 8260 Low Level Volatiles EPA 8260D EPA 5030B cis-1,3-Dichloropropene 10061-01-5 FALSE FALSE ND 0.5 1.0 ug/L ##NA 1 GLH Stantec C BSS Chemtech-Ford MW-3 24H0884-01 Water 08/09/2024 12:30:00 08/14/2024 13:31:00 BYH0685 8260 Low Level Volatiles EPA 8260D EPA 5030B Cyclohexanone 108-94-1 FALSE FALSE ND 9.9 10.0 ug/L ##NA 1 GLH J-LOW-L Stantec C BSS Chemtech-Ford MW-3 24H0884-01 Water 08/09/2024 12:30:00 08/14/2024 13:31:00 BYH0685 8260 Low Level Volatiles EPA 8260D EPA 5030B Dibromochloromethane 124-48-1 FALSE FALSE ND 0.3 1.0 ug/L ##NA 1 GLH Stantec C BSS Chemtech-Ford MW-3 24H0884-01 Water 08/09/2024 12:30:00 08/14/2024 13:31:00 BYH0685 8260 Low Level Volatiles EPA 8260D EPA 5030B Dibromomethane 74-95-3 FALSE FALSE ND 0.4 1.0 ug/L ##NA 1 GLH Stantec C BSS Chemtech-Ford MW-3 24H0884-01 Water 08/09/2024 12:30:00 08/14/2024 13:31:00 BYH0685 8260 Low Level Volatiles EPA 8260D EPA 5030B Toluene-d8 2037-26-5 TRUE FALSE 10.6 ug/L ##NA 1 10.0 106 129 63.2 GLH Stantec C BSS Chemtech-Ford MW-3 24H0884-01 Water 08/09/2024 12:30:00 08/14/2024 13:31:00 BYH0685 8260 Low Level Volatiles EPA 8260D EPA 5030B 1,1,2-Trichlorotrifluoroethane 76-13-1 FALSE FALSE ND 0.6 1.0 ug/L ##NA 1 GLH Stantec C BSS Chemtech-Ford MW-3 24H0884-01 Water 08/09/2024 12:30:00 08/14/2024 13:31:00 BYH0685 8260 Low Level Volatiles EPA 8260D EPA 5030B Dichlorodifluoromethane 75-71-8 FALSE FALSE ND 0.5 1.0 ug/L ##NA 1 GLH J-LOW-L Stantec C BSS Chemtech-Ford MW-3 24H0884-01 Water 08/09/2024 12:30:00 08/14/2024 13:31:00 BYH0685 8260 Low Level Volatiles EPA 8260D EPA 5030B Ethyl Acetate 141-78-6 FALSE FALSE ND 1.1 2.0 ug/L ##NA 1 GLH Stantec C BSS Chemtech-Ford MW-3 24H0884-01 Water 08/09/2024 12:30:00 08/14/2024 13:31:00 BYH0685 8260 Low Level Volatiles EPA 8260D EPA 5030B Ethylbenzene 100-41-4 FALSE FALSE 1.2 0.3 1.0 ug/L ##NA 1 GLH Stantec C BSS Chemtech-Ford MW-3 24H0884-01 Water 08/09/2024 12:30:00 08/14/2024 13:31:00 BYH0685 8260 Low Level Volatiles EPA 8260D EPA 5030B Ethyl Ether 60-29-7 FALSE FALSE ND 0.4 1.0 ug/L ##NA 1 GLH Stantec C BSS Chemtech-Ford MW-3 24H0884-01 Water 08/09/2024 12:30:00 08/14/2024 13:31:00 BYH0685 8260 Low Level Volatiles EPA 8260D EPA 5030B Hexachlorobutadiene 87-68-3 FALSE FALSE ND 0.7 1.0 ug/L ##NA 1 GLH Stantec C BSS Chemtech-Ford MW-3 24H0884-01 Water 08/09/2024 12:30:00 08/14/2024 13:31:00 BYH0685 8260 Low Level Volatiles EPA 8260D EPA 5030B Isobutanol 78-83-1 FALSE FALSE ND 18.3 20.0 ug/L ##NA 1 GLH Stantec C BSS Chemtech-Ford MW-3 24H0884-01 Water 08/09/2024 12:30:00 08/14/2024 13:31:00 BYH0685 8260 Low Level Volatiles EPA 8260D EPA 5030B Isopropylbenzene 98-82-8 FALSE FALSE ND 0.5 1.0 ug/L ##NA 1 GLH Stantec C BSS Chemtech-Ford MW-3 24H0884-01 Water 08/09/2024 12:30:00 08/14/2024 13:31:00 BYH0685 8260 Low Level Volatiles EPA 8260D EPA 5030B Methyl Ethyl Ketone 78-93-3 FALSE FALSE ND 1.2 2.0 ug/L ##NA 1 GLH Stantec C BSS Chemtech-Ford MW-3 24H0884-01 Water 08/09/2024 12:30:00 08/14/2024 13:31:00 BYH0685 8260 Low Level Volatiles EPA 8260D EPA 5030B Methyl Isobutyl Ketone 108-10-1 FALSE FALSE 1.5 0.5 5.0 ug/L ##NA 1 GLH J Stantec C BSS Chemtech-Ford MW-3 24H0884-01 Water 08/09/2024 12:30:00 08/14/2024 13:31:00 BYH0685 8260 Low Level Volatiles EPA 8260D EPA 5030B Methylene Chloride 75-09-2 FALSE FALSE ND 0.7 1.0 ug/L ##NA 1 GLH Stantec C BSS Chemtech-Ford MW-3 24H0884-01 Water 08/09/2024 12:30:00 08/14/2024 13:31:00 BYH0685 8260 Low Level Volatiles EPA 8260D EPA 5030B 1,1-Dichloroethane 75-34-3 FALSE FALSE ND 0.6 1.0 ug/L ##NA 1 GLH J-LOW-L Stantec C BSS Chemtech-Ford MW-3 24H0884-01 Water 08/09/2024 12:30:00 08/14/2024 13:31:00 BYH0685 8260 Low Level Volatiles EPA 8260D EPA 5030B Methyl-tert-butyl ether (MTBE)1634-04-4 FALSE FALSE ND 0.5 0.6 ug/L ##NA 1 GLH Stantec C BSS Chemtech-Ford MW-3 24H0884-01 Water 08/09/2024 12:30:00 08/14/2024 13:31:00 BYH0685 8260 Low Level Volatiles EPA 8260D EPA 5030B Naphthalene 91-20-3 FALSE FALSE 20.7 0.6 1.0 ug/L ##NA 1 GLH Stantec C BSS Chemtech-Ford MW-3 24H0884-01 Water 08/09/2024 12:30:00 08/14/2024 13:31:00 BYH0685 8260 Low Level Volatiles EPA 8260D EPA 5030B n-Butyl Alcohol 71-36-3 FALSE FALSE ND 9.7 50.0 ug/L ##NA 1 GLH Stantec C BSS Chemtech-Ford MW-3 24H0884-01 Water 08/09/2024 12:30:00 08/14/2024 13:31:00 BYH0685 8260 Low Level Volatiles EPA 8260D EPA 5030B n-Butylbenzene 104-51-8 FALSE FALSE ND 0.7 1.0 ug/L ##NA 1 GLH Stantec C BSS Chemtech-Ford MW-3 24H0884-01 Water 08/09/2024 12:30:00 08/14/2024 13:31:00 BYH0685 8260 Low Level Volatiles EPA 8260D EPA 5030B n-Propyl Benzene 103-65-1 FALSE FALSE ND 0.5 1.0 ug/L ##NA 1 GLH Stantec C BSS Chemtech-Ford MW-3 24H0884-01 Water 08/09/2024 12:30:00 08/14/2024 13:31:00 BYH0685 8260 Low Level Volatiles EPA 8260D EPA 5030B Pentachloroethane 76-01-7 FALSE FALSE ND 0.6 1.0 ug/L ##NA 1 GLH Stantec C BSS Chemtech-Ford MW-3 24H0884-01 Water 08/09/2024 12:30:00 08/14/2024 13:31:00 BYH0685 8260 Low Level Volatiles EPA 8260D EPA 5030B p-Isopropyltoluene 99-87-6 FALSE FALSE ND 0.4 1.0 ug/L ##NA 1 GLH Stantec C BSS Chemtech-Ford MW-3 24H0884-01 Water 08/09/2024 12:30:00 08/14/2024 13:31:00 BYH0685 8260 Low Level Volatiles EPA 8260D EPA 5030B sec-Butyl Benzene 135-98-8 FALSE FALSE ND 0.5 1.0 ug/L ##NA 1 GLH Stantec C BSS Chemtech-Ford MW-3 24H0884-01 Water 08/09/2024 12:30:00 08/14/2024 13:31:00 BYH0685 8260 Low Level Volatiles EPA 8260D EPA 5030B Styrene 100-42-5 FALSE FALSE ND 0.5 1.0 ug/L ##NA 1 GLH Stantec C BSS Chemtech-Ford MW-3 24H0884-01 Water 08/09/2024 12:30:00 08/14/2024 13:31:00 BYH0685 8260 Low Level Volatiles EPA 8260D EPA 5030B tert-Butylbenzene 98-06-6 FALSE FALSE ND 0.4 1.0 ug/L ##NA 1 GLH Stantec C BSS Chemtech-Ford MW-3 24H0884-01 Water 08/09/2024 12:30:00 08/14/2024 13:31:00 BYH0685 8260 Low Level Volatiles EPA 8260D EPA 5030B 1,1-Dichloroethene 75-35-4 FALSE FALSE ND 0.5 1.0 ug/L ##NA 1 GLH J-LOW-L Stantec C BSS Chemtech-Ford MW-3 24H0884-01 Water 08/09/2024 12:30:00 08/14/2024 13:31:00 BYH0685 8260 Low Level Volatiles EPA 8260D EPA 5030B Tetrachloroethene 127-18-4 FALSE FALSE 2.0 0.6 1.0 ug/L ##NA 1 GLH Stantec C BSS Chemtech-Ford MW-3 24H0884-01 Water 08/09/2024 12:30:00 08/14/2024 13:31:00 BYH0685 8260 Low Level Volatiles EPA 8260D EPA 5030B Toluene 108-88-3 FALSE FALSE 4.1 0.7 1.0 ug/L ##NA 1 GLH Stantec C BSS Chemtech-Ford MW-3 24H0884-01 Water 08/09/2024 12:30:00 08/14/2024 13:31:00 BYH0685 8260 Low Level Volatiles EPA 8260D EPA 5030B trans-1,2-Dichloroethene 156-60-5 FALSE FALSE 0.7 0.3 1.0 ug/L ##NA 1 GLH J Stantec C BSS Chemtech-Ford MW-3 24H0884-01 Water 08/09/2024 12:30:00 08/14/2024 13:31:00 BYH0685 8260 Low Level Volatiles EPA 8260D EPA 5030B trans-1,3-Dichloropropene 10061-02-6 FALSE FALSE ND 0.5 1.0 ug/L ##NA 1 GLH Stantec C BSS Chemtech-Ford MW-3 24H0884-01 Water 08/09/2024 12:30:00 08/14/2024 13:31:00 BYH0685 8260 Low Level Volatiles EPA 8260D EPA 5030B Trichloroethene 79-01-6 FALSE FALSE 0.7 0.3 1.0 ug/L ##NA 1 GLH J Stantec C BSS Chemtech-Ford MW-3 24H0884-01 Water 08/09/2024 12:30:00 08/14/2024 13:31:00 BYH0685 8260 Low Level Volatiles EPA 8260D EPA 5030B Trichlorofluoromethane 75-69-4 FALSE FALSE ND 0.5 1.0 ug/L ##NA 1 GLH Stantec C BSS Chemtech-Ford MW-3 24H0884-01 Water 08/09/2024 12:30:00 08/14/2024 13:31:00 BYH0685 8260 Low Level Volatiles EPA 8260D EPA 5030B Vinyl Chloride 75-01-4 FALSE FALSE 3.1 0.4 0.8 ug/L ##NA 1 GLH Stantec C BSS Chemtech-Ford MW-3 24H0884-01 Water 08/09/2024 12:30:00 08/14/2024 13:31:00 BYH0685 8260 Low Level Volatiles EPA 8260D EPA 5030B Xylenes, total 1330-20-7 FALSE FALSE 7.3 1.1 3.0 ug/L ##NA 1 GLH Stantec C BSS Chemtech-Ford MW-3 24H0884-01 Water 08/09/2024 12:30:00 08/14/2024 13:31:00 BYH0685 8260 Low Level Volatiles EPA 8260D EPA 5030B 1,1-Dichloropropene 563-58-6 FALSE FALSE ND 0.3 1.0 ug/L ##NA 1 GLH Stantec C BSS Chemtech-Ford MW-3 24H0884-01 Water 08/09/2024 12:30:00 08/14/2024 13:31:00 BYH0685 8260 Low Level Volatiles EPA 8260D EPA 5030B 2-Hexanone 591-78-6 FALSE FALSE ND 8.3 10.0 ug/L ##NA 1 GLH Stantec C BSS Chemtech-Ford MW-3 24H0884-01 Water 08/09/2024 12:30:00 08/14/2024 13:31:00 BYH0685 8260 Low Level Volatiles EPA 8260D EPA 5030B 1,2,3-Trichlorobenzene 87-61-6 FALSE FALSE ND 0.8 1.0 ug/L ##NA 1 GLH