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Home My WebLink AboutDERR-2025-003418 ADDITIONAL SUBSURFACE INVESTIGATION AND GROUNDWATER MONITORING REPORT, MARCH 2025 EVENT Flying J Travel Center #746 2025 South 900 West Salt Lake City, Salt Lake County, Utah DERR Facility ID #4000302, LUST Release Site ID: FTX and LUX Prepared for: Utah Department of Environmental Quality Division of Environmental Response and Remediation 195 North 1950 West P.O. Box 144840 Salt Lake City, Utah 84114-4840 Prepared by: Broadbent & Associates, Inc. 8787 S. Redwood Road St. #200 West Jordan, Utah 84088 (801) 505-9251 May 1, 2025 Project No. 20-14-104 ADDITIONAL SUBSURFACE INVESTIGATION AND GROUNDWATER MONITORING REPORT, MARCH 2025 EVENT FLYING J TRAVEL CENTER #746 SALT LAKE CITY, UTAH Broadbent & Associates, Inc. (Broadbent) is pleased to present this Additional Subsurface Investigation and Groundwater Monitoring Report, March 2025 Event on behalf of Pilot Travel Centers LLC (Pilot) associated with Flying J Travel Center #746 (Site) located in Salt Lake City, Utah. Figure 1 depicts the Site’s general location. Figure 2 depicts the general area of investigation associated with the Site. Additional monitoring wells were installed to address data gaps related to Release IDs FTX and LUX. Groundwater monitoring and sampling were conducted to assist with the evaluation of Site conditions associated with the dissolved phase petroleum hydrocarbon plume due to historic releases. Sarah Hamilton (GS #1869) conducted sampling associated with installation of new monitoring wells and the March 2025 groundwater monitoring and sampling event. Details of conducted work, discussion of results, and recommendations are provided below. Facility Name / Address: Flying J Travel Center #746, 2025 South 900 West, Salt Lake City, Utah Pilot Project Manager / Title: Mr. Joey Cupp – Sr. Director, Environmental, (865) 588-7488 Broadbent Contact: Mr. Aric Morton, (801) 505-9251 Broadbent Project No.: 20-14-104 Primary Regulatory Agency / ID No.: Utah Department of Environmental Quality DERR Facility ID #4000302, LUST Release ID: FTX and LUX Current phase of project: Additional subsurface investigation and monitoring and evaluation of Site conditions List of Acronyms / Abbreviations: See end of report text for list of acronyms/abbreviations used in report. WORK PERFORMED THIS PERIOD (September 2024 to March 2025): 1. Decommissioned monitoring well MW-5 on March 19, 2025 2. Installed replacement well MW-5a and new wells MW-13, and MW-14 between March 20-21, 2025. 3. Conducted groundwater monitoring and sampling on March 28 and March 30, 2025. WORK SCHEDULED FOR NEXT PERIOD (March 2025 to September 2025): 1. Prepare and submit the Additional Subsurface Investigation and Groundwater Monitoring Report, March 2025, Event (contained herein). 2. Prepare and submit the Well Decommissioning Report related to Release ID OFS on May 1, 2025. 3. Conduct annual groundwater monitoring and sampling in September 2025. ANNUAL MONITORING PLAN SUMMARY: Groundwater level gauging: MW-1 through MW-5a, MW-13, and MW-14 (semiannual) Groundwater sample collection: MW-1 through MW-5a, MW-13, and MW-14 (semiannual) ANNUAL RESULTS SUMMARY: LNAPL LNAPL observed this quarter: No (yes/no) LNAPL recovered this quarter: None (gal) Cumulative LNAPL recovered: None (gal) Groundwater Elevation and Gradient: Depth to groundwater: 7.69 feet (MW-2) to 10.20 feet (MW-13) (ft below TOC) Gradient direction: Southwest (compass direction) Broadbent & Associates, Inc. Groundwater Monitoring Report and Additional Subsurface Investigation, March 2025 Event West Jordan, Utah Flying J Travel Center #746/Salt Lake City, Utah May 1, 2025 Page 2 Gradient magnitude: 0.02 (ft/ft) Average change in elevation: 0.81 increase (ft since last measurement) Laboratory Analytical Data Summary: Benzene and TPH-DRO were detected above specific Utah Department of Environmental Quality (UDEQ) Initial Screening Levels (ISLs) in select groundwater and soil samples (reported below). ACTIVITIES CONDUCTED & RESULTS: Prior to initiating subsurface investigations, Broadbent marked the proposed drilling locations with white paint and notified Blue Stakes of Utah (811). Additional due diligence efforts were made by hand auguring and vacuum removal of the top five (5) feet of subsurface soils to verify that no fuel lines or other subsurface utilities were present. On March 20 and 21, 2025, Cascade advanced a total of three (3) borings using direct-push technology. Each boring was drilled to a total depth of approximately 15 feet with soil samples being collected at the capillary fringe and highest impacted interval. Field screening for potential volatile organics in soil cuttings were conducted with a portable PID which was properly calibrated at the start the workday. PID and olfactory observations suggested potential petroleum hydrocarbon impacts while drilling MW-13 with a maximum PID reading of 147.6 parts per million by volume [ppmV] was measured at approximately nine (9) feet bgs. No field evidence of petroleum hydrocarbon impacted soil or groundwater was noted in MW-5a or MW-14. No irregularities were reported during the sampling of the boring locations or installation of monitoring wells. Soil samples were submitted on ice, under chain-of-custody protocol, to Pace Analytical National in Mount Juliet, Tennessee for analysis of benzene, toluene, ethylbenzene, total xylenes (BTEX), and naphthalene by EPA Method 8260B, and for TPH diesel range organics (DRO) with silica gel treatment and TPH gasoline range organics (GRO) by EPA Method 3511/8015. No significant irregularities were reported by the laboratory. Laboratory soil analytical results are summarized in Table 1. A soil analytical map is attached as Figure 3. At the completion of drilling and soil sampling, each boring was completed as a two (2)-inch diameter PVC well with a 10-foot section of slotted casing extending from approximately five (5) feet to 15 feet bgs. Each well was finished at the surface in a traffic-rated flush-mounted well box. The completed wells were identified as MW-5a, MW-13 and MW-14. Soil lithologic logs including monitor well construction details are provided in Appendix B. Groundwater monitoring and sampling activities were conducted on March 28 and 30, 2025, by Sarah Hamilton, certified sampler GS-1869. The event followed the previous event conducted in September 2024. Monitoring wells MW-1 through MW-5a, MW-13, and MW-14 were gauged to measure depth to water and depth to LNAPL, if present. No irregularities were reported during gauging or sampling activities. Depth to groundwater ranged from 7.69 feet (MW-2) to 10.20 feet (MW-13). LNAPL was not detected in the groundwater monitoring wells during the monitoring event. Groundwater flow is generally to the southwest with an average calculated magnitude of 0.02 ft/ft. Groundwater elevation increased approximately 0.81 feet across the Site since the previous event in September 2024. Broadbent’s groundwater monitoring and sampling field procedures are provided in Appendix A. Groundwater monitoring field data sheets and lithologic logs are provided in Appendix B. Current and historical groundwater elevation data are presented in Table 2. A groundwater potentiometric surface map is attached as Figure 4. Groundwater samples were collected from monitoring wells MW-1 through MW-5a, MW-13, and MW-14 on March 28 and 30, 2025. No irregularities were reported during the purging or sampling of these wells. Samples were submitted on ice, under chain-of-custody protocol, to Pace Analytical National in Mount Juliet, Tennessee for analysis of benzene, toluene, ethylbenzene, total xylenes (BTEX), and naphthalene by EPA Method 8260B, and Broadbent & Associates, Inc. Groundwater Monitoring Report and Additional Subsurface Investigation, March 2025 Event West Jordan, Utah Flying J Travel Center #746/Salt Lake City, Utah May 1, 2025 Page 3 for TPH diesel range organics (DRO) with silica gel treatment and TPH gasoline range organics (GRO) by EPA Method 3511/8015. No significant irregularities were reported by the laboratory. A groundwater analytical map is attached as Figure 5. Laboratory groundwater analytical results are summarized in Table 2. The laboratory report and chain-of-custody documentation are attached as Appendix C. Soil analytical results yield the following notable observations: • TPH-DRO was detected above the UDEQ ISLs in two (2) of the six (6) soil samples submitted with MW-5a at 5 ft bgs at 738 milligrams per kilogram (mg/kg) and MW-13 at 9 ft bgs at 10,500 mg/kg. Groundwater analytical results yield the following notable observations: • Benzene was detected in one (1) of the seven (7) groundwater samples with the detected concentration exceeding the UDEQ ISL of 5 µg/L in sample MW-1 ant 22.2 µg/L. • TPH-DRO was detected in six (6) of the seven (7) groundwater samples with six (6) samples exceeding the UDEQ ISL of 1,000 µg/L ranging from 1,200 µg/L in MW-4 to 5,390 µg/L in MW-2. DISCUSSION: Based on the results of the groundwater monitoring and sampling conducted in March 2025, benzene exceeds the UDEQ ISL in monitoring well MW-1 and was detected above UDEQ ISL in the September 2024 event. TPH-DRO concentrations exceed the UDEQ ISL in six (6) of the seven (7) monitoring wells. The groundwater gradient at the Site is toward the southwest with a flow magnitude of 0.02 ft/ft which is consistent with previous monitoring events. Graphs 1 through 6 depict the concentrations of selected constituents versus time for select monitoring wells. RECOMMENDATIONS: Based on residual concentrations associated with Site wells, it is recommended that groundwater monitoring and sampling be conducted consistently during Second and Third Quarter 2025 to review trends in the replacement well MW-5a and new wells MW-13 and MW-14. Each Site well will be monitored and sampled during the next two (2) quarters. LIMITATIONS: The findings presented in this report are based upon observations of field personnel, points investigated, results of laboratory tests performed by Pace Analytical Inc. in Mt. Juliet, Tennessee, and our understanding of UDEQ practices. Our services were performed in accordance with the generally accepted standard of practice at the time this report was written. No other warranty expressed or implied was made. This report has been prepared for the exclusive use of Pilot Travel Centers LLC. It is possible that variations in soil or groundwater conditions could exist beyond points explored in this investigation. Also, changes in site conditions could occur in the future due to variations in rainfall, temperature, regional water usage, or other factors. Broadbent & Associates, Inc. Groundwater Monitoring Report and Additional Subsurface Investigation, March 2025 Event West Jordan, Utah Flying J Travel Center #746/Salt Lake City, Utah May 1, 2025 Page 4 REFERENCES: Broadbent & Associates, Inc. 2024. Annual Groundwater Monitoring Report, September 2024 Event, Flying J Travel Center #746, October 25. Broadbent & Associates, Inc. 2025. Monitor Well Decommissioning Report, Flying J Travel Center #746, May 1. Utah Department of Environmental Quality, 2005. Initial Screening Levels. November 5. Broadbent & Associates, Inc. Groundwater Monitoring Report and Additional Subsurface Investigation, March 2025 Event West Jordan, Utah Flying J Travel Center #746/Salt Lake City, Utah May 1, 2025 Page 5 ATTACHMENTS: Figure 1 Site Location Map Figure 2 Site Layout Map Figure 3 Soil Analytical Map (3/28/25) Figure 4 Potentiometric Surface Map (3/28/25) Figure 5 Groundwater Analytical Map (3/28/25) Table 1 Soil Analytical Results Table 2 Groundwater Monitoring and Analytical Results Graphs 1-6 Selected Concentrations and Depth to Groundwater vs. Time for Selected Wells Appendix A: Field Methods Appendix B: Field Data Sheets and Well Construction Logs Appendix C: Laboratory Report and Chain of Custody Documentation LIST OF COMMONLY USED ACCRONYMS/ABBREVIATIONS: BTEX: benzene, toluene, ethylbenzene, total xylenes MTBE: methyl tertiary butyl ether DO: dissolved oxygen NO3: nitrate as nitrogen DRO: diesel range organics PAHs: polycyclic aromatic hydrocarbons Eh: oxidation reduction potential SO4: sulfate Fe2+: ferrous iron SVOCs: semi-volatile organic compounds ft/ft: feet per foot TOC: top of casing gal: gallons TPH: total petroleum hydrocarbons GRO gasoline range organics g/L: micrograms per liter ISLs Initial Screening Levels UDEQ Utah Department of Environmental Quality bgs Below ground surface mg/kg milligrams per kilogram Site Location Map Flying J Travel Center #746 2025 South 900 West Salt Lake City, Utah Project No. 20-14-104 Figure Prepared by: JEH Reviewed by: ACM Date: 3/2/21 1 0 SCALE: 1 inch = 4000 feet 4000 8000 LEGEND Site Location MW-7MW-8 MW-10 MW-12 MW-9 MW-4 MW-3 MW-2 MW-5 MW-1 S 9 0 0 W Flying J Travel Center W 2100 S Auto Dispenser Canopy Truck Dispenser Canopy USTs MW-11 MW-13 MW-14 MW-5A Site Map Flying J Travel Center #746 2025 South 900 West Salt Lake City, Utah Project No. 20-14-104 Figure Prepared by: AGH Reviewed by: ACM Date: 4/28/25 2 0 SCALE: 1 inch = 80 feet 80 160 LEGEND Property Boundary (approximate) Monitoring Well LocationMW-2 MW-5 Decommissioned Well Location MW-7MW-8 MW-10 MW-12 MW-9 MW-4 MW-3 MW-2 MW-5 MW-1 MW-11 MW-13 MW-14 MW-5A MW-5A@5 B=0.00198 T=0.00691 E<0.00294 X=0.0156 M<0.00118 N<0.0147 TPH-D=738 TPH-G<2.94 MW-5A@10 B<0.00152 T<0.00759 E<0.00380 X<0.00987 M<0.00152 N<0.0190 TPH-D=7.37 TPH-G<3.80 MW-13@6 B<0.00137 T<0.00687 E<0.00343 X<0.00893 M<0.00137 N<0.0172 TPH-D=26.3 TPH-G<3.43 MW-13@9 B<0.00172 T<0.00861 E<0.00430 X<0.112 M<0.0172 N=5.46 TPH-D=10,500 TPH-G=193 MW-14@6 B=0.00136 T=0.00330 E<0.00299 X=0.0230 M<0.00120 N<0.0149 TPH-D=30.0 TPH-G<2.99 MW-14@9 B<0.00225 T<0.0112 E<0.00562 X<0.0146 M<0.00225 N<0.0281 TPH-D<6.34 TPH-G<5.62 Soil Analytical Map (3/28/25) Flying J Travel Center #746 2025 South 900 West Salt Lake City, Utah Project No. 20-14-104 Figure Prepared by: AGH Reviewed by: ACM Date: 4/28/25 3 0 SCALE: 1 inch = 80 feet 80 160 LEGEND Property Boundary (approximate) Monitoring Well LocationMW-2 Key to Dissolved Groundwater Concentrations* B = Benzene (mg/kg) T = Toluene (mg/kg) E = Ethylbenzene (mg/kg) X = Total Xylenes (mg/kg) M = Methyl tertiary-butyl ether (mg/kg) N = Naphthalene (mg/kg) TPH-G = Total Petroleum Hydrocarbons Gas Range (mg/kg) TPH-D = Total Petroleum Hydrocarbons Diesel Range (mg/kg) *Concentrations in BOLD exceed UDEQ ISL Regulatory Standards MW-5 Decommissioned Well Location 4227.27 4227.32 4228.78 4227.37 MW-2 MW-1 MW-7MW-8 MW-10 MW-12 MW-9MW-11 MW-4 MW-3 MW-2 MW-5 MW-1 MW-11 MW-13 MW-14 MW-5ANM NM NM 4 2 2 7 . 5 0 4 2 2 8 . 0 0 4 2 2 8 . 5 0 Potentiometric Surface Map (3/28/25) Flying J Travel Center #746 2025 South 900 West Salt Lake City, Utah Project No. 20-14-104 Figure Prepared by: AGH Reviewed by: ACM Date: 4/28/25 4 0 SCALE: 1 inch = 80 feet 80 160 LEGEND Property Boundary (approximate) MW-2 Monitoring Well Location and Groundwater Elevation (feet) Groundwater Elevation Contour 4228.0 0 Groundwater Flow Direction (0.02 feet/foot) 4228.78 MW-5 Decommissioned Well Location MW-7MW-8 MW-10 MW-12 MW-9 MW-4 MW-3 MW-2 MW-5 MW-1 MW-11 MW-13 MW-14 MW-5A Not Sampled B=22.2 T<1.00 E=2.73 X<3.00 N<5.00 TPH-D=2,550 B<1.00 T<1.00 E<1.00 X<3.00 N<5.00 TPH-D=5,390 B<1.00 T<1.00 E<1.00 X<3.00 N<5.00 TPH-D=1,210 B<1.00 T<1.00 E<1.00 X<3.00 N<5.00 TPH-D=1,200 B<1.00 T<1.00 E<1.00 X<3.00 N<5.00 TPH-D=1,450 B<1.00 T<1.00 E<1.00 X<3.00 N<5.00 TPH-D=3,330 B<1.00 T<1.00 E<1.00 X<3.00 N<5.00 TPH-D=442 Groundwater Analytical Map (3/28/25) Flying J Travel Center #746 2025 South 900 West Salt Lake City, Utah Project No. 20-14-104 Figure Prepared by: AGH Reviewed by: ACM Date: 4/28/25 5 0 SCALE: 1 inch = 80 feet 80 160 LEGEND Property Boundary (approximate) Monitoring Well LocationMW-2 Key to Dissolved Groundwater Concentrations* B = Benzene (µg/L) T = Toluene (µg/L) E = Ethylbenzene (µg/L) X = Total Xylenes (µg/L) M = Methyl tertiary-butyl ether (µg/L) N = Naphthalene (µg/L) TPH-G = Total Petroleum Hydrocarbons Gas Range (µg/L) TPH-D = Total Petroleum Hydrocarbons Diesel Range (µg/L) *Concentrations in BOLD exceed UDEQ ISL Regulatory Standards MW-5 Decommissioned Well Location Benzene Toluene Ethyl- benzene Total Xylenes Methyl- tert-butyl ether (MTBE) Naphthal ene TPH-GRO TPH-DRO 0.2 9 5 142 0.3 51 150 500 0.9 25 23 142 0.3 51 1,500 5,000 MW-5A 5 03/20/25 0.00198 0.00691 <0.00294 0.0156 <0.00118 <0.0147 <2.94 738 MW-5A 10 03/20/25 <0.00152 <0.00759 <0.00380 <0.00987 <0.00152 <0.0190 <3.80 73.7 MW-13 6 03/21/25 <0.00137 <0.00687 <0.00343 <0.00893 <0.00137 <0.0172 <3.43 26.3 MW-13 9 03/21/25 <0.0172 <0.0861 <0.0430 <0.112 <0.0172 5.46 193 10,500 MW-14 6 03/20/25 0.0136 0.0330 <0.00299 0.0230 <0.00120 <0.0149 <2.99 30.0 MW-14 9 03/20/25 <0.00225 <0.0112 <0.00562 <0.0146 <0.00225 <0.0281 <5.62 <6.34 Concentrations in BOLD exceed Reporting Limitsmg/kg = milligrams per kilogram Highlighted concentrations exceed ISLs or Tier 1TPH-GRO = Gasoline-range total petroleum hydrocarbons bgs = below ground surface TPH-DRO = Diesel-range total petroleum hydrocarbons EPA = United States Environmental Protection Agency(-) = not measured UDEQ = Utah Department of Environmental QualityNS = not sampled ISLs = Initial Screening Levels NA = not applicable Sample Date All results reported in milligrams per kilogram (mg/kg) EPA Method 8260B EPA Method 8015 UDEQ ISLs (mg/kg) Tier 1 Screening Criteria (mg/kg) 2025 South 900 West, Salt Lake City, Salt Lake County, Utah Table 1 Soil Analytical Results Flying J Travel Center No. 746 Sample ID Approxim ate Sample Depth (feet bgs) MTBE Benzene Toluene Ethyl Benzene Total Xylenes Naphth- alene TPH-GRO TPH-DRO 200 5 1,000 700 10,000 700 1,000 1,000 ** 200 300 3,000 4,000 10,000 700 10,000 10,000 10/19/07 36 600 <25 28 16 100 2,600 1,200 8.98 91.38 04/30/09 28 1,400 <25 55 49 120 3,200 5,600 8.23 92.13 06/07/10 38 1,200 17 54 39 89 3,800 8,200 8.21 92.15 06/01/11 6.7 351 8.1 36.7 30.2 112 1,830 1,200 7.35 93.01 11/30/11 22.1 318 4.9 20.3 16.9 54.4 2,240 754 8.65 91.71 06/07/12 19.3 248 3.2J 13.7 10.0 38.5 1,840 764 9.03 91.33 12/06/12 16.8 244 <10 15.8 11.2J 82.6 1,220 911 8.48 91.88 06/06/13 21.7 513 7.9J 29.3 25.4 94.0 2,140 957 8.35 92.01 12/11/13 16.1 163 <10 8.4J 10.7J 12.8J 1,250 390 8.91 91.45 06/17/14 23.2 333 5.8J 16.4 17.9 90.9 2,080 927 8.27 92.09 12/04/14 16.5 134 1.5J 4.4 2.6J 11.1J 1,240 589 8.88 91.48 06/02/16 16.5 46.3 0.58J 1.3 1.5 <4.0 1,460 133 8.41 91.95 12/07/17 13.5 35.7 0.74J 0.87J 1.5 <4.0 1,110 783 8.95 91.41 08/28/18 7.0 28.7 <1.0 1.1 <1.0 <4.0 613 381 9.01 91.35 12/12/19 5.96 87.4 1.73 4.50 2.94J 3.04J 1,210 B 2,470 8.65 91.71 06/23/21 4.75 86.4 <1.00 2.92 <3.00 <5.00 1,120 297 8.88 91.48 12/16/22 4.22 67.8 1.51 4.64 3.8 <5.00 1,570 363 8.35 92.01 06/29/23 5.20 52.1 <1.00 1.50 <3.00 <5.00 NM 241 8.87 91.49 09/09/24 NM 50.0 1.51 4.40 4.6 8.3 NM 426 8.85 91.51 4226.85 03/28/25 4.01 22.2 <1.00 2.73 <3.00 <5.00 996 2,550 8.33 92.03 4227.37 10/30/07 16 38 <5 <1 <3 100 200 1,900 9.71 91.51 04/30/09 8.6 34 <5.0 <1.0 <3.0 29 230 2,700 9.05 92.17 06/07/10 1.9 17 <5.0 <1.0 <3.0 140 <100 7,000 7.52 93.70 06/01/11 0.67J 28.7 <2.0 1.2J 2.7J 106 392 2,040 7.11 94.11 11/30/11 2.7 15.2 <2.0 0.75J 2.4J 51.3 401 2,110 9.40 91.82 06/07/12 <2.0 9.0 <2.0 0.52J <3.0 13.5 264 1,790 9.75 91.47 12/06/12 2.9 10.9 <2.0 0.54J <3.0 21.4 254 1,930 9.33 91.89 06/06/13 3.8 14.4 <2.0 1.1J 3.5 28.7 306 2,510 9.15 91.99 12/11/13 <2.0 7.6 <2.0 0.85J 2.8J 18.7 356 1,240 9.70 91.44 06/17/14 3.2 3.9 <2.0 0.81J 3.0 13.6 403 1,210 9.20 91.94 12/04/14 0.56J 1.3 0.38J 0.48J 2.2 25.1 413 2,590 9.66 91.48 06/02/16 <1.0 0.73J <1.0 <1.0 1.6 8.6 256 1,650 9.16 91.98 12/07/17 <1.0 0.57J <1.0 <1.0 2.8 2.0J 481 85,400 9.73 91.41 08/28/18 <1.0 1.0 0.57J <1.0 1.8 <4.0 634 2,170 9.55 91.59 12/12/19 <1.0 1.07 0.557J 0.496J 2.81J 4.69J 758 B 2,930 9.30 91.84 06/23/21 <1.00 <1.00 <1.00 <1.00 <3.00 <5.00 433 1,630 9.50 91.64 12/16/22 <1.00 <1.00 <1.00 <1.00 3.71 5.3 651 1,120 9.01 92.13 06/29/23 <1.00 <1.00 <1.00 <1.00 <3.00 <5.00 NM 1,920 9.99 91.15 09/09/24 NM 1.44 <1.00 <1.00 3.1 <5.00 NM 1,560 9.47 91.67 4227.00 03/28/25 <1.00 <1.00 <1.00 <1.00 <3.00 <5.00 474 5,390 7.69 93.45 4228.78 10/19/07 6,600 24 <5 1.6 <3 28 <100 1,000 9.39 91.37 04/30/09 1.4 3.8 <5.0 <1.0 <3.0 6.7 280 1,300 8.84 91.92 06/07/10 <1.0 2.2 <5.0 <1.0 <3.0 <5.0 <100 1,100 8.87 91.89 06/01/11 <2.0 2.1 <2.0 <2.0 <4.0 <10 415 NA 7.50 93.26 11/30/11 2.5 4.8 <2.0 0.85J <4.0 <10 <200 662 9.05 91.71 06/07/12 1.3J 0.77J <2.0 0.38J <3.0 <5.0 <200 419 9.40 91.36 12/06/12 1.3J 4.0 <2.0 0.63J <3.0 <5.0 <200 850 8.52 92.20 06/06/13 1.9J 0.59J <2.0 <2.0 <3.0 <5.0 <200 423 8.88 91.84 12/11/13 3.9 6.1 <2.0 1.3J <3.0 <5.0 207 322 9.34 91.38 06/17/14 <2.0 0.35J <2.0 <2.0 <3.0 <5.0 <200 374 8.97 91.75 12/04/14 1.9 0.40J <1.0 <1.0 <2.0 2.4J 138 421 9.28 91.44 06/02/16 <1.0 <1.0 <1.0 <1.0 <1.0 <4.0 <200 562 8.63 92.09 12/07/17 <1.0 <1.0 <1.0 <1.0 <1.0 <4.0 <200 1,030 9.20 91.52 08/28/18 0.68J <1.0 0.55J <1.0 <1.0 <4.0 <200 1,220 9.35 91.37 12/12/19 0.953J 0.418J <1.0 <1.0 <3.0 <5.0 458 JB 1,190 8.95 91.77 06/23/21 2.14 <1.00 <1.00 <1.00 <3.00 <5.00 <100 159 8.23 92.49 12/16/22 <1.00 <1.00 <1.00 <1.00 <3.00 <5.00 <100 <100 8.19 92.53 06/29/23 <1.00 <1.00 <1.00 <1.00 <3.00 <5.00 NM <100 9.33 91.39 09/09/24 NM <1.00 <1.00 <1.00 <3.00 <5.00 NM <100 9.22 91.50 4226.82 03/28/25 1.01 <1.00 <1.00 <1.00 <3.00 <5.00 <100 1,210 8.72 92.00 4227.32 Relative Groundwater Elevation (feet) Absolute Groundwater Elevation (feet) Date Concentrations (µg/L) MW-1 MW-2 RBCA Tier 1 SL Well No. UDEQ ISL Table 2 Groundwater Monitoring and Analytical Results Flying J Travel Center No. 746 2025 South 900 West, Salt Lake City, Salt Lake County, Utah MW-3 Depth to Groundwater (feet btoc) Broadbent 746 Analytical Tables 4-28-25 Page 1 of 3 MTBE Benzene Toluene Ethyl Benzene Total Xylenes Naphth- alene TPH-GRO TPH-DRO 200 5 1,000 700 10,000 700 1,000 1,000 ** 200 300 3,000 4,000 10,000 700 10,000 10,000 Relative Groundwater Elevation (feet) Absolute Groundwater Elevation (feet) Date Concentrations (µg/L) MW-1 RBCA Tier 1 SL Well No. UDEQ ISL Table 2 Groundwater Monitoring and Analytical Results Flying J Travel Center No. 746 2025 South 900 West, Salt Lake City, Salt Lake County, Utah Depth to Groundwater (feet btoc) 10/19/07 1.1 4 <5 <1 <3 <9.5 <100 2,600 9.27 91.31 04/30/09 <1.0 <1.0 <5.0 <1.0 <3.0 <5.0 220 1,400 8.73 91.85 06/07/10 <1.0 <1.0 <5.0 <1.0 <3.0 <5.0 <100 2,300 8.74 91.84 06/01/11 3.1 <1.0 <2.0 <2.0 <4.0 <10 <200 428 7.69 92.89 11/30/11 <2.0 <1.0 <2.0 <2.0 <4.0 <10 <200 428 8.91 91.67 06/07/12 <2.0 <1.0 <2.0 <2.0 <3.0 <5.0 <200 412 9.21 91.37 12/06/12 <2.0 <1.0 <2.0 <2.0 <3.0 <5.0 <200 490 8.94 91.64 06/06/13 2.7 <1.0 <2.0 <2.0 <3.0 <5.0 <200 363 8.70 91.82 12/11/13 <2.0 <1.0 <2.0 <2.0 <3.0 <5.0 <200 344 9.17 91.35 06/17/14 <2.0 <1.0 <2.0 <2.0 <3.0 <5.0 <200 472 8.79 91.73 12/04/14 5.5 <1.0 <1.0 <1.0 <2.0 <5.0 72.3 362 9.15 91.37 06/02/16 2.0 <1.0 <1.0 <1.0 <1.0 <4.0 <200 166 8.68 91.84 12/07/17 0.65J <1.0 <1.0 <1.0 <1.0 <4.0 <200 1,360 9.15 91.37 08/28/18 0.83J <1.0 <1.0 <1.0 <1.0 <4.0 <200 704 9.17 91.35 12/12/19 <1.0 0.571J <1.0 <1.0 <3.0 <5.0 416 JB 1,100 8.85 91.67 06/23/21 <1.00 <1.00 <1.00 <1.00 <3.00 <5.00 <100 137 9.03 91.49 12/16/22 <1.00 <1.00 <1.00 <1.00 <3.00 <5.00 106 <100 8.55 91.97 06/29/23 <1.00 <1.00 <1.00 <1.00 <3.00 <5.00 NM 157 9.18 91.34 09/09/24 NM <1.00 <1.00 <1.00 <3.00 <5.00 NM 101 8.96 91.56 4226.80 03/28/25 <1.00 <1.00 <1.00 <1.00 <3.00 <5.00 <100 1,200 8.52 92.00 4227.24 10/19/07 8.8 <1 <5 <1 <3 <5 520 770 8.71 94.30 04/30/09 <1.0 <1.0 <5.0 <1.0 <3.0 <5.0 <100 490 10.87 92.14 06/07/10 <1.0 <1.0 <5.0 <1.0 <3.0 <5.0 <100 290 10.16 92.85 06/01/11 <2.0 <1.0 <2.0 <2.0 <4.0 <10 <200 NA 7.29 95.72 11/30/11 <2.0 <1.0 <2.0 <2.0 <4.0 <10 <200 <380 10.44 92.57 06/07/12 <2.0 <1.0 <2.0 <2.0 <3.0 <5.0 <200 209 10.65 92.36 12/06/12 <2.0 <1.0 1.7J <2.0 <3.0 <5.0 <200 199 10.34 92.67 06/06/13 <2.0 <1.0 <2.0 <2.0 <3.0 <5.0 <200 171J 10.23 91.96 12/11/13 <2.0 <1.0 <2.0 <2.0 <3.0 <5.0 <200 NA 10.71 91.48 06/17/14 <2.0 <1.0 <2.0 <2.0 <3.0 <5.0 <200 <190 10.11 92.08 12/04/14 <1.0 <1.0 7.6 <1.0 <2.0 <5.0 46.3J 518 10.70 91.49 06/02/16 <1.0 <1.0 <1.0 <1.0 <1.0 <4.0 <200 98.7 10.22 91.97 12/07/17 08/28/18 06/23/21 12/16/22 06/29/23 09/09/24 03/30/25 <1.00 <1.00 <1.00 <1.00 <3.00 <5.00 <100 1,450 8.53 10/30/07 <1 <1 <5 <1 <3 <5 <100 1,100 11.56 88.44 04/30/09 <1.0 <1.0 <5.0 <1.0 <3.0 <5.0 <100 630 8.03 91.97 06/07/10 <1.0 <1.0 <5.0 <1.0 <3.0 <5.0 <100 590 8.04 91.96 06/01/11 <2.0 <1.0 <2.0 <2.0 <4.0 <10 <200 <380 6.75 93.25 09/09/24 NM <1.00 <1.00 <1.00 <3.00 <5.00 NM <100 8.50 NA 4226.98 09/09/24 NM 1.21 <1.00 <1.00 <3.00 <5.00 NM <100 8.05 NA 4226.71 09/09/24 NM <1.00 <1.00 <1.00 <3.00 <5.00 NM <100 8.60 NA 4226.71 09/09/24 NM <1.00 <1.00 <1.00 <3.00 <5.00 NM <100 7.89 NA 4226.59 09/09/24 NM <1.00 <1.00 <1.00 <3.00 <5.00 NM 135 7.52 NA 4226.51 09/09/24 NM <1.00 <1.00 <1.00 <3.00 <5.00 NM <100 7.47 NA 4226.50 MW-11 Well decommissioned 3/19/25 MW-12 Well decommissioned 3/19/25 MW-9 Well decommissioned 3/19/25 MW-10 Well decommissioned 3/19/25 MW-5b MW-7 Well decommissioned 3/19/25 Well decommissioned 3/19/25 Not sampled or gauged: Roots blocking well at ~9.0 ft BTOC MW-8 Well decommissioned 3/19/25 MW-6 MW-5 Not sampled or gauged: Roots blocking well Not sampled or gauged: Roots blocking well at ~8.5 ft BTOC Not sampled or gauged: Roots blocking well at ~9.0 ft BTOC Well destroyed during DEF install June 2011 Not sampled or gauged: Roots blocking well Not sampled or gauged: Roots blocking well at ~8.5 ft BTOC MW-4 Broadbent 746 Analytical Tables 4-28-25 Page 2 of 3 MTBE Benzene Toluene Ethyl Benzene Total Xylenes Naphth- alene TPH-GRO TPH-DRO 200 5 1,000 700 10,000 700 1,000 1,000 ** 200 300 3,000 4,000 10,000 700 10,000 10,000 Relative Groundwater Elevation (feet) Absolute Groundwater Elevation (feet) Date Concentrations (µg/L) MW-1 RBCA Tier 1 SL Well No. UDEQ ISL Table 2 Groundwater Monitoring and Analytical Results Flying J Travel Center No. 746 2025 South 900 West, Salt Lake City, Salt Lake County, Utah Depth to Groundwater (feet btoc) 03/30/25 <1.00 <1.00 <1.00 <1.00 <3.00 <5.00 104 3,330 10.20 03/30/25 10.9 <1.00 <1.00 <1.00 <3.00 <5.00 <100 442 8.75 Abbreviations and Notes: µg/L = micrograms per liter MTBE = methyl tertiary-butyl ether TPH-GRO = total petroleum hydrocarbons gasoline range organics TPH-DRO = total petroleum hydrocarbons diesel range organics MW-1 15.2 5 to 15 100.36 4235.704 UDEQ = Utah Department of Environmental Quality MW-2 15.2 5 to 15 101.14 4236.473 ISL = Initial Screening Level MW-3 15.1 5 to 15 100.72 4236.044 RBCA = Risk-Based Corrective Action MW-4 15 5 to 15 100.52 4235.756 SL = screening level MW-5 14 4 to 14 102.19 4237.571 <= analyte not detected above the minimum detection limit MW-5a 15 5 to 15 NA NA J = value is between laboratory minimum detection limit and reporting limit MW-6 17 6.5 to 16.5 100.00 NA B = analyte detected in laboratory method blank MW-7 15 5 to 15 NA 4235.48 NA = not applicable MW-8 15 5 to 15 NA 4234.76 NM = not measured MW-9 15 5 to 15 NA 4235.31 bold = sample result exceeds RBCA Tier 1 SL and/or UDEQ ISLs MW-10 15 5 to 15 NA 4234.48 Data reported prior to June 2021 was collected by ATC Group Services (ATC)MW-11 15 5 to 15 NA 4234.03 **wells resurveyed in 2024 from relative elevation to absolute elevation MW-12 15 5 to 15 NA 4233.97 MW-13 15 5 to 15 NA NA MW-14 15 5 to 15 NA NA * Wells resurveyed on 12-6-12. Previous elevations: MW-1=100.36, MW-2=101.22, MW-3=100.76 MW-4=100.58, MW-5=103.01, MW-6=100.00 Total Well Depth (feet bgs) Screened Interval (feet) MW-13 MW-14 Relative Top of Casing Elevation (feet) Well No. Absolute Top of Casing Elevation (feet) Broadbent 746 Analytical Tables 4-28-25 Page 3 of 3 5.0 6.0 7.0 8.0 9.0 10.0 11.0 12.00 200 400 600 800 1000 1200 1400 1600 Ju n - 0 6 Ju n - 0 7 Ju n - 0 8 Ju n - 0 9 Ju n - 1 0 Ju n - 1 1 Ju n - 1 2 Ju n - 1 3 Ju n - 1 4 Ju n - 1 5 Ju n - 1 6 Ju n - 1 7 Ju n - 1 8 Ju n - 1 9 Ju n - 2 0 Ju n - 2 1 Ju n - 2 2 Ju n - 2 3 Ju n - 2 4 Ju n - 2 5 De p t h t o G r o u n d w a t e r ( f e e t B T O C ) Co n c e n t r a t i o n ( u g / L ) DATE GRAPH 1 MW-1 Benzene Concentration vs. Time Flying J Travel Center No. 746 Benzene Depth to Groundwater 5.0 6.0 7.0 8.0 9.0 10.0 11.0 12.00 500 1,000 1,500 2,000 2,500 3,000 3,500 4,000 Ju n - 0 6 Ju n - 0 7 Ju n - 0 8 Ju n - 0 9 Ju n - 1 0 Ju n - 1 1 Ju n - 1 2 Ju n - 1 3 Ju n - 1 4 Ju n - 1 5 Ju n - 1 6 Ju n - 1 7 Ju n - 1 8 Ju n - 1 9 Ju n - 2 0 Ju n - 2 1 Ju n - 2 2 Ju n - 2 3 Ju n - 2 4 Ju n - 2 5 De p t h t o G r o u n d w a t e r ( f e e t B T O C ) Co n c e n t r a t i o n ( u g / L ) DATE GRAPH 2 MW-1 TPH-GRO Concentration vs. Time Flying J Travel Center No. 746 TPH-GRO Depth to Groundwater Page 1 of 3 5.0 6.0 7.0 8.0 9.0 10.0 11.0 12.00 1,000 2,000 3,000 4,000 5,000 6,000 7,000 8,000 9,000 Ju n - 0 6 Ju n - 0 7 Ju n - 0 8 Ju n - 0 9 Ju n - 1 0 Ju n - 1 1 Ju n - 1 2 Ju n - 1 3 Ju n - 1 4 Ju n - 1 5 Ju n - 1 6 Ju n - 1 7 Ju n - 1 8 Ju n - 1 9 Ju n - 2 0 Ju n - 2 1 Ju n - 2 2 Ju n - 2 3 Ju n - 2 4 Ju n - 2 5 De p t h t o G r o u n d w a t e r ( f e e t B T O C ) Co n c e n t r a t i o n ( u g / L ) DATE GRAPH 3 MW-1 TPH-DRO Concentration vs. Time Flying J Travel Center No. 746 TPH-DRO Depth to Groundwater 5.0 6.0 7.0 8.0 9.0 10.0 11.0 12.01 10 100 1,000 10,000 100,000 Ju n - 0 6 Ju n - 0 7 Ju n - 0 8 Ju n - 0 9 Ju n - 1 0 Ju n - 1 1 Ju n - 1 2 Ju n - 1 3 Ju n - 1 4 Ju n - 1 5 Ju n - 1 6 Ju n - 1 7 Ju n - 1 8 Ju n - 1 9 Ju n - 2 0 Ju n - 2 1 Ju n - 2 2 Ju n - 2 3 Ju n - 2 4 Ju n - 2 5 De p t h t o G r o u n d w a t e r ( f e e t B T O C ) Co n c e n t r a t i o n ( u g / L ) DATE GRAPH 4 MW-2 TPH-DRO Concentration vs. Time Flying J Travel Center No. 746 TPH-DRO Depth to Groundwater Page 2 of 3 5.0 6.0 7.0 8.0 9.0 10.0 11.0 12.00 200 400 600 800 1,000 1,200 1,400 Ju n - 0 6 Ju n - 0 7 Ju n - 0 8 Ju n - 0 9 Ju n - 1 0 Ju n - 1 1 Ju n - 1 2 Ju n - 1 3 Ju n - 1 4 Ju n - 1 5 Ju n - 1 6 Ju n - 1 7 Ju n - 1 8 Ju n - 1 9 Ju n - 2 0 Ju n - 2 1 Ju n - 2 2 Ju n - 2 3 Ju n - 2 4 Ju n - 2 5 De p t h t o G r o u n d w a t e r ( f e e t B T O C ) Co n c e n t r a t i o n ( u g / L ) DATE GRAPH 5 MW-3 TPH-DRO Concentration vs. Time Flying J Travel Center No. 746 TPH-DRO Depth to Groundwater 5.0 6.0 7.0 8.0 9.0 10.0 11.0 12.00 500 1,000 1,500 2,000 2,500 3,000 Ju n - 0 6 Ju n - 0 7 Ju n - 0 8 Ju n - 0 9 Ju n - 1 0 Ju n - 1 1 Ju n - 1 2 Ju n - 1 3 Ju n - 1 4 Ju n - 1 5 Ju n - 1 6 Ju n - 1 7 Ju n - 1 8 Ju n - 1 9 Ju n - 2 0 Ju n - 2 1 Ju n - 2 2 Ju n - 2 3 Ju n - 2 4 Ju n - 2 5 De p t h t o G r o u n d w a t e r ( f e e t B T O C ) Co n c e n t r a t i o n ( u g / L ) DATE GRAPH 6 MW-4 TPH-DRO Concentration vs. Time Flying J Travel Center No. 746 TPH-DRO Depth to Groundwater Page 3 of 3 APPENDIX A FIELD METHODS Page 1 of 4 QUALITY ASSURANCE/QUALITY CONTROL FIELD METHODS Field methods discussed herein were implemented to provide for accuracy and reliability of field activities, data collection, sample collection, and handling. Discussion of these methods is provided below. 1.0 EQUIPMENT CALIBRATION Equipment calibration was performed per equipment manufacturer specifications before use. 2.0 DEPTH TO GROUNDWATER AND LIGHT NON-AQUEOUS PHASE LIQUID MEASUREMENT Depth to groundwater was measured in wells identified for gauging in the scope of work using a decontaminated water level indicator. The depth to water measurement was taken from a cut notch or permanent mark at the top of the well casing to which the well head elevation was originally surveyed. Once depth to water was measured, an oil/water interface meter or a new disposable bailer was utilized to evaluate the presence and, if present, to measure the “apparent” thickness of light non-aqueous phase liquid (LNAPL) in the well. If LNAPL was present in the well, groundwater purging and sampling were not performed, unless sampling procedures in the scope of work specified collection of samples in the presence of LNAPL. Otherwise, time allowing, LNAPL was bailed from the well using either a new disposable bailer, or the disposal bailer previously used for initial LNAPL assessment. Bailing of LNAPL continued until the thickness of LNAPL (or volume) stabilized in each bailer pulled from the well, or LNAPL was no longer present. After LNAPL thickness either stabilized or was eliminated, periodic depth to water and depth to LNAPL measurements were collected as product came back into the well to evaluate product recovery rate and to aid in further assessment of LNAPL in the subsurface. LNAPL thickness measurements were recorded as “apparent.” If a bailer was used for LNAPL thickness measurement, the field sampler noted the bailer entry diameter and chamber diameter to enable correction of thickness measurements. Recovered LNAPL was stored on-site in a labeled steel drum(s) or other appropriate container(s) prior to disposal. 3.0 WELL PURGING AND GROUNDWATER SAMPLE COLLECTION Well purging and groundwater sampling were performed in wells specified in the scope of work after measuring depth to groundwater and evaluating the presence of LNAPL. Purging and sampling were performed using one of the methods detailed below. The method used was noted in the field records. Purge water was stored on-site in labeled steel drum(s) or other appropriate container(s) prior to disposal or on-site treatment (in cases where treatment using an on-site system is authorized). Broadbent & Associates, Inc. Quality Assurance/Quality Control Field Methods Page 2 of 4 3.1 Purging a Predetermined Well Volume Purging a predetermined well volume is performed per ASTM International (ASTM) D4448-01. This purging method has the objective of removing a predetermined volume of stagnant water from the well prior to sampling. The volume of stagnant water is defined as either the volume of water contained within the well casing, or the volume within the well casing and sand/gravel in the annulus if natural flow through these is deemed insufficient to keep them flushed out. This purging method involves removal of a minimum of three stagnant water volumes from the well using a decontaminated pump with new disposable plastic discharge or suction tubing, dedicated well tubing, or using a new disposable or decontaminated reusable bailer. If a new disposable bailer was used for assessment of LNAPL, that bailer may be used for purging. The withdrawal rate used is one that minimizes drawdown while satisfying time constraints. To evaluate when purging is complete, one or more groundwater stabilization parameters are monitored and recorded during purging activities until stabilization is achieved. Most commonly, stabilization parameters include temperature, conductivity, and pH, but field procedures detailed in the scope of work may also include monitoring of dissolved oxygen concentrations, oxidation reduction potential, and/or turbidity1. Parameters are considered stable when two (2) consecutive readings recorded three (3) minutes apart fall within ranges provided below in Table 1. In the event that the parameters have not stabilized and five (5) well casing volumes have been removed, purging activities will cease and be considered complete. Once the well is purged, a groundwater sample(s) is collected from the well using a new disposable bailer. If a new disposable bailer was used for purging, that bailer may be used to collect the sample(s). A sample is not collected if the well is inadvertently purged dry. Table 1. Criteria for Defining Stabilization of Water-Quality Indicator Parameters Parameter Stabilization Criterion Temperature ± 0.2ºC (± 0.36ºF) pH ± 0.1 standard units Conductivity ± 3% Dissolved oxygen ± 10% Oxidation reduction potential ± 10 mV Turbidity1 ± 10% or 1.0 NTU (whichever is greater) 3.2 Low-Flow Purging and Sampling “Low-Flow”, “Minimal Drawdown”, or "Low-Stress” purging is performed per ASTM D6771-02. It is a method of groundwater removal from within a well’s screened interval that is intended to minimize drawdown and mixing of the water column in the well 1 As stated in ASTM D6771-02, turbidity is not a chemical parameter and not i ndicative of when formation-quality water is being purged; however, turbidity may be helpful in evaluating stress on the formation during purging. Turbidity measurements are t aken at the same time that stabilization parameter measurements are made, or, at a minimum, once when purging is initiated and again just prior to sample collection, after stabilization parameters have stabilized. To avoid artifacts in sample analysis, turb idity should be as low as possible when samples are collected. If turbidity values are persistently high, the withdrawal rate is lowered until turbidity decreases. If high turbidity persists even after lowering the withdrawal rate, the purging is stopped for a period of time until turbidity settles, and the purging process is then restarted. If this fails to solve the problem, the purging/sampling process for the well is ceased, and well maintenance or redevelopment is considered. Broadbent & Associates, Inc. Quality Assurance/Quality Control Field Methods Page 3 of 4 casing. This is accomplished by pumping the well using a decontaminated pump with new disposable plastic discharge or suction tubing or dedicated well tubing at a low flow rate while evaluating the groundwater elevation during pumping. The low flow pumping rate is well specific and is generally established at a volume that is less than or equal to the natural recovery rate of the well. A pump with adjustable flow rate control is positioned with the intake at or near the mid-point of the submerged well screen. The pumping rate used during low-flow purging is low enough to minimize mobilization of particulate matter and drawdown (stress) of the water column. Low-flow purging rates will vary based on the individual well characteristics; however, the purge rate should not exceed 1.0 Liter per minute (L/min) or 0.25 gallon per minute (gal/min). Low-flow purging should begin at a rate of approximately 0.1 L/min (0.03 gal/min)2, or the lowest rate possible, and be adjusted based on an evaluation of drawdown. Water level measurements should be recorded at approximate one (1) to two (2) minute intervals until the low-flow rate has been established, and drawdown is minimized. As a general rule, drawdown should not exceed 25% of the distance between the top of the water column and the pump in-take. To evaluate when purging is complete, one or more groundwater stabilization parameters are monitored and recorded during purging activities until stabilization is achieved. Most commonly, stabilization parameters include temperature, conductivity, and pH, but field procedures detailed in the scope of work may also include monitoring of dissolved oxygen concentrations, oxidation reduction potential, and/or turbidity1. The frequency between measurements will be at an interval of one (1) to three (3) minutes; however, if a flow cell is used, the frequency will be determined based on the time required to evacuate one cell volume. Stabilization is defined as three (3) consecutive readings recorded several minutes apart falling within ranges provided in Table 1. Samples will be collected by filling appropriate containers from the pump discharge tubing at a rate not to exceed the established pumping rate. 3.3 Minimal Purge, Discrete Depth, and Passive Sampling In accordance with ASTM D4448-01, sampling techniques that do not rely on purging, or require only minimal purging, may be used if a particular zone within a screened interval is to be sampled or if a well is not capable of yielding sufficient groundwater for purging. To properly use these sampling techniques, a water sample is collected within the screened interval with little or no mixing of the water column within the casing. These techniques include minimal purge sampling which uses a dedicated sampling pump capable of pumping rates of less than 0.1 L/min (0.03 gal/min)2, discrete depth sampling using a bailer that allows groundwater entry at a controlled depth (e.g. differential pressure bailer), or passive (diffusion) sampling. These techniques are based on certain studies referenced in ASTM D4448-01 that indicate that under certain conditions, natural groundwater flow is laminar and horizontal with little or no mixing within the well screen. 2 According to ASTM D4448-01, studies have indicated that at flow rates of 0.1 L/min, low -density polyethylene (LDPE) and plasticized polypropylene tubing materials are prone to sorption. Therefore, TFE -fluorocarbon or other appropriate tubing material is used, particularly when tubing lengths of 50 feet or longer are used. Broadbent & Associates, Inc. Quality Assurance/Quality Control Field Methods Page 4 of 4 4.0 DECONTAMINATION Reusable groundwater sampling equipment were cleaned using a solution of Alconox or other acceptable detergent, rinsed with tap water, and finally rinsed with distilled water prior to use in each well. Decontamination water was stored on-site in appropriately labeled DOT approved steel drum(s) or other appropriate container(s) prior to disposal. 5.0 SAMPLE CONTAINERS, LABELING, AND STORAGE Samples were collected in laboratory prepared containers with appropriate preservative (if preservative was required). Samples were labeled (site name, sample I.D., sampler initials, date, and time of collection) and stored chilled (refrigerator or ice chest with ice) until delivery to a certified laboratory, under chain of custody procedures. 6.0 CHAIN OF CUSTODY RECORD AND PROCEDURE The field sampler was personally responsible for care and custody of the samples collected until they were properly transferred to another party. To document custody and transfer of samples, a Chain of Custody Record was prepared. The Chain of Custody Record provided identification of the samples corresponding to sample labels and specified analyses to be performed by the laboratory. The original Chain of Custody Record accompanied the shipment, and a copy of the record was stored in the project file. When the samples were transferred, the individuals relinquishing and receiving them signed, dated, and noted the time of transfer on the record. 7.0 FIELD RECORDS Daily Report and data forms were completed by staff personnel to provide daily record of significant events, observations, and measurements. Field records were signed, dated, and stored in the project file. APPENDIX B FIELD DATA SHEETS AND LITHOLOGIC LOGS PROJECT NAME:Flying J 746 LITHOLOGIC LOG ADDRESS: 2025 S 900 W, Salt Lake City, UT 20-14-104 BORING ID: MW-5A Cascade START: 1040 DATE: 03/20/25 DRILLING COMPANY: Direct Push STOP: 1110 DRILLING METHOD:DRILL OPERATOR: Jaden GEOLOGIST: SH 2-inch Flush Mount WELL CASING DIAMETER: SURFACE COMPLETION:PROJECT NUMBER: BORING DIAMETER: 3-inch DEPT H ( F T . ) LITH O L O G Y GW D E PTH USCS SAM P L E D E P T H ODO R PLAS T I C I T Y PID MOIS T U R E (pp m ) CON S TRU C T I O N WELL SOIL DE SCRIPT I O N 1 of 1 10-feetESTIMATED GROUNDWATER DEPTH:TOTAL BORING DEPTH: 15-feet Dry Moist Moist Wet NR 0.0 7.9 NR None None Mod. None None None AC NR GM SW ML 0 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 Asphalt No Recovery Gray to brown well graded sand and gravel Brown sand Gray silt Grout Blank PVC Bentonite seal Sand Screen PVC PROJECT NAME:Flying J 746 LITHOLOGIC LOG ADDRESS: 2025 S 900 W, Salt Lake City, UT 20-14-104 BORING ID: MW-13 Cascade START: 1320 DATE: 03/21/25 DRILLING COMPANY: Direct Push STOP: 1420 DRILLING METHOD:DRILL OPERATOR: Jaden GEOLOGIST: SH 2-inch Flush Mount WELL CASING DIAMETER: SURFACE COMPLETION:PROJECT NUMBER: BORING DIAMETER: 3-inch DEPTH ( F T . ) LITH O L O GY GW DE PTH USCS SAM P L E D E P T H ODO R PLASTI CITY PID MOIS TUR E (pp m ) CON STRU C T I O N WELL SOIL DE SCRIPTIO N 1 of 1 6-feetESTIMATED GROUNDWATER DEPTH:TOTAL BORING DEPTH: 15-feet Dry Moist Moist Wet Moist Moist 0 2.0 147.6 11.5 90.9 10.0 NR None None None Low None None None None NR GW SW ML ML SW 0 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 No Recovery Gray sand and gravel Brown well sorted sand Black silt little gravel Gray silt Gray to brown fine sand Grout Blank PVC Bentonite seal Sand Screen PVC PROJECT NAME:Flying J 746 LITHOLOGIC LOG ADDRESS: 2025 S 900 W, Salt Lake City, UT 20-14-104 BORING ID: MW-14 Cascade START: 1720 DATE: 03/20/25 DRILLING COMPANY: Direct Push STOP: 1750 DRILLING METHOD:DRILL OPERATOR: Jaden GEOLOGIST: SH 2-inch Flush Mount WELL CASING DIAMETER: SURFACE COMPLETION:PROJECT NUMBER: BORING DIAMETER: 3-inch DEPTH ( F T . ) LITH O L O GY GW DE PTH USCS SAM P L E D E P T H ODO R PLASTI CITY PID MOIS TUR E (pp m ) CON STRU C T I O N WELL SOIL DE SCRIPTIO N 1 of 1 9-feetESTIMATED GROUNDWATER DEPTH:TOTAL BORING DEPTH: 15-feet Dry Moist Moist Moist Moist Wet 0.0 0.0 0.0 NR None Low High Low High None None None NR GW SM ML ML CL 0 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 No Recovery Gray sand and gravel Black silty sand and gravel Gray silt Black to brown silt Dark gray silt and clay Grout Blank PVC Bentonite seal Sand Screen PVC APPENDIX C LABORATORY REPORT AND CHAIN-OF-CUSTODY DOCUMENTATION ANALYTICAL REPORT April 04, 2025 Broadbent & Associates - UT Pilot Sample Delivery Group:L1839869 Samples Received:03/25/2025 Project Number:746-605-13 Description:Flying J 746 - Salt Lake City, UT Report To:Aric Morton 186 East Main Street Suite 99 Sandy, UT 84070 Entire Report Reviewed By: April 04, 2025 [Preliminary Report] Jeff Carr Project Manager Results relate only to the items tested or calibrated and are reported as rounded values. This test report shall not be reproduced, except in full, without written approval of the laboratory. Where applicable, sampling conducted by Pace Analytical National is performed per guidance provided in laboratory standard operating procedures ENV-SOP-MTJL-0067 and ENV-SOP-MTJL-0068. Where sampling conducted by the customer, results relate to the accuracy of the information provided, and as the samples are received. Pace Analytical National 12065 Lebanon Rd Mount Juliet, TN 37122 615-758-5858 800-767-5859 mydata.pacelabs.com 1 Cp 2 Tc 3 Ss 4 Cn 5 Sr 6 Qc 7 Gl 8 Al 9 Sc ACCOUNT:PROJECT:SDG:DATE/TIME:PAGE: Broadbent & Associates - UT Pilot 746-605-13 L1839869 04/04/25 22:45 1 of 23 April 05, 2025 Jeff Carr Project Manager ACCOUNT:PROJECT:SDG:DATE/TIME:PAGE: Broadbent & Associates - UT Pilot 746-605-13 L1839869 04/05/25 10:14 1 of 23 TABLE OF CONTENTS Cp: Cover Page 1 Tc: Table of Contents 2 Ss: Sample Summary 3 Cn: Case Narrative 4 Sr: Sample Results 5 MW-5A@5 L1839869-01 5 MW-5A@10 L1839869-02 6 MW-13@6 L1839869-03 7 MW-13@9 L1839869-04 8 MW-14@6 L1839869-05 9 MW-14@9 L1839869-06 10 Qc: Quality Control Summary 11 Total Solids by Method 2540 G-2011 11 Volatile Organic Compounds (GC) by Method 8015D/GRO 13 Volatile Organic Compounds (GC/MS) by Method 8260B 15 Semi-Volatile Organic Compounds (GC) by Method 8015 18 Gl: Glossary of Terms 21 Al: Accreditations & Locations 22 Sc: Sample Chain of Custody 23 1 Cp 2 Tc 3 Ss 4 Cn 5 Sr 6 Qc 7 Gl 8 Al 9 Sc ACCOUNT:PROJECT:SDG:DATE/TIME:PAGE: Broadbent & Associates - UT Pilot 746-605-13 L1839869 04/04/25 22:45 2 of 23 ACCOUNT:PROJECT:SDG:DATE/TIME:PAGE: Broadbent & Associates - UT Pilot 746-605-13 L1839869 04/05/25 10:14 2 of 23 SAMPLE SUMMARY Collected by Collected date/time Received date/time MW-5A@5 L1839869-01 Solid Sarah Hamilton 03/20/25 10:50 03/25/25 08:00 Method Batch Dilution Preparation Analysis Analyst Location date/time date/time Total Solids by Method 2540 G-2011 WG2476682 1 03/26/25 11:24 03/26/25 11:31 KDW Mt. Juliet, TN Volatile Organic Compounds (GC) by Method 8015D/GRO WG2478994 25 03/20/25 10:50 03/28/25 22:14 NCD Mt. Juliet, TN Volatile Organic Compounds (GC/MS) by Method 8260B WG2479225 1 03/20/25 10:50 03/30/25 16:00 WHS Mt. Juliet, TN Semi-Volatile Organic Compounds (GC) by Method 8015 WG2479468 100 04/01/25 12:30 04/02/25 01:47 SGB Mt. Juliet, TN Collected by Collected date/time Received date/time MW-5A@10 L1839869-02 Solid Sarah Hamilton 03/20/25 11:00 03/25/25 08:00 Method Batch Dilution Preparation Analysis Analyst Location date/time date/time Total Solids by Method 2540 G-2011 WG2476682 1 03/26/25 11:24 03/26/25 11:31 KDW Mt. Juliet, TN Volatile Organic Compounds (GC) by Method 8015D/GRO WG2478994 25 03/20/25 11:00 03/28/25 22:34 NCD Mt. Juliet, TN Volatile Organic Compounds (GC/MS) by Method 8260B WG2479225 1 03/20/25 11:00 03/30/25 16:20 WHS Mt. Juliet, TN Semi-Volatile Organic Compounds (GC) by Method 8015 WG2480085 10 04/01/25 10:06 04/01/25 23:17 KKS Mt. Juliet, TN Collected by Collected date/time Received date/time MW-13@6 L1839869-03 Solid Sarah Hamilton 03/20/25 14:00 03/25/25 08:00 Method Batch Dilution Preparation Analysis Analyst Location date/time date/time Total Solids by Method 2540 G-2011 WG2476682 1 03/26/25 11:24 03/26/25 11:31 KDW Mt. Juliet, TN Volatile Organic Compounds (GC) by Method 8015D/GRO WG2478994 25 03/20/25 14:00 03/28/25 22:53 NCD Mt. Juliet, TN Volatile Organic Compounds (GC/MS) by Method 8260B WG2479225 1 03/20/25 14:00 03/30/25 16:40 WHS Mt. Juliet, TN Semi-Volatile Organic Compounds (GC) by Method 8015 WG2480085 5 04/01/25 10:06 04/01/25 23:04 KKS Mt. Juliet, TN Collected by Collected date/time Received date/time MW-13@9 L1839869-04 Solid Sarah Hamilton 03/20/25 14:10 03/25/25 08:00 Method Batch Dilution Preparation Analysis Analyst Location date/time date/time Total Solids by Method 2540 G-2011 WG2476682 1 03/26/25 11:24 03/26/25 11:31 KDW Mt. Juliet, TN Volatile Organic Compounds (GC) by Method 8015D/GRO WG2480344 100 03/20/25 14:10 04/01/25 00:59 CDD Mt. Juliet, TN Volatile Organic Compounds (GC/MS) by Method 8260B WG2480446 10 03/20/25 14:10 04/01/25 15:05 WHS Mt. Juliet, TN Semi-Volatile Organic Compounds (GC) by Method 8015 WG2480085 500 04/01/25 10:06 04/02/25 00:22 KKS Mt. Juliet, TN Collected by Collected date/time Received date/time MW-14@6 L1839869-05 Solid Sarah Hamilton 03/20/25 17:30 03/25/25 08:00 Method Batch Dilution Preparation Analysis Analyst Location date/time date/time Total Solids by Method 2540 G-2011 WG2476682 1 03/26/25 11:24 03/26/25 11:31 KDW Mt. Juliet, TN Volatile Organic Compounds (GC) by Method 8015D/GRO WG2478994 25 03/20/25 17:30 03/28/25 23:12 NCD Mt. Juliet, TN Volatile Organic Compounds (GC/MS) by Method 8260B WG2479385 1 03/20/25 17:30 03/31/25 00:57 JAH Mt. Juliet, TN Semi-Volatile Organic Compounds (GC) by Method 8015 WG2481834 2 04/03/25 12:47 04/04/25 13:24 KDB Mt. Juliet, TN Collected by Collected date/time Received date/time MW-14@9 L1839869-06 Solid Sarah Hamilton 03/20/25 17:40 03/25/25 08:00 Method Batch Dilution Preparation Analysis Analyst Location date/time date/time Total Solids by Method 2540 G-2011 WG2476709 1 03/26/25 11:15 03/26/25 11:21 KDW Mt. Juliet, TN Volatile Organic Compounds (GC) by Method 8015D/GRO WG2478994 25 03/20/25 17:40 03/28/25 23:32 NCD Mt. Juliet, TN Volatile Organic Compounds (GC/MS) by Method 8260B WG2479385 1 03/20/25 17:40 03/31/25 01:16 JAH Mt. Juliet, TN Semi-Volatile Organic Compounds (GC) by Method 8015 WG2480085 1 04/01/25 10:06 04/01/25 18:56 KKS Mt. Juliet, TN 1 Cp 2 Tc 3 Ss 4 Cn 5 Sr 6 Qc 7 Gl 8 Al 9 Sc ACCOUNT:PROJECT:SDG:DATE/TIME:PAGE: Broadbent & Associates - UT Pilot 746-605-13 L1839869 04/04/25 22:45 3 of 23 ACCOUNT:PROJECT:SDG:DATE/TIME:PAGE: Broadbent & Associates - UT Pilot 746-605-13 L1839869 04/05/25 10:14 3 of 23 CASE NARRATIVE All sample aliquots were received at the correct temperature, in the proper containers, with the appropriate preservatives, and within method specified holding times, unless qualified or notated within the report. Where applicable, all MDL (LOD) and RDL (LOQ) values reported for environmental samples have been corrected for the dilution factor used in the analysis. All Method and Batch Quality Control are within established criteria except where addressed in this case narrative, a non-conformance form or properly qualified within the sample results. By my digital signature below, I affirm to the best of my knowledge, all problems/anomalies observed by the laboratory as having the potential to affect the quality of the data have been identified by the laboratory, and no information or data have been knowingly withheld that would affect the quality of the data. [Preliminary Report] Jeff Carr Project Manager 1 Cp 2 Tc 3 Ss 4 Cn 5 Sr 6 Qc 7 Gl 8 Al 9 Sc ACCOUNT:PROJECT:SDG:DATE/TIME:PAGE: Broadbent & Associates - UT Pilot 746-605-13 L1839869 04/04/25 22:45 4 of 23 Jeff Carr Project Manager ACCOUNT:PROJECT:SDG:DATE/TIME:PAGE: Broadbent & Associates - UT Pilot 746-605-13 L1839869 04/05/25 10:14 4 of 23 SAMPLE RESULTS - 01 L1839869 MW-5A@5 Collected date/time: 03/20/25 10:50 Total Solids by Method 2540 G-2011 Result Qualifier Dilution Analysis Batch Analyte %date / time Total Solids 92.6 1 03/26/2025 11:31 WG2476682 Volatile Organic Compounds (GC) by Method 8015D/GRO Result (dry)Qualifier RDL (dry)Dilution Analysis Batch Analyte mg/kg mg/kg date / time TPH (GC/FID) Low Fraction ND 2.94 25 03/28/2025 22:14 WG2478994 (S) a,a,a-Trifluorotoluene(FID)96.0 77.0-120 03/28/2025 22:14 WG2478994 Volatile Organic Compounds (GC/MS) by Method 8260B Result (dry)Qualifier RDL (dry)Dilution Analysis Batch Analyte mg/kg mg/kg date / time Benzene 0.00198 0.00118 1 03/30/2025 16:00 WG2479225 Toluene 0.00691 0.00588 1 03/30/2025 16:00 WG2479225 Ethylbenzene ND 0.00294 1 03/30/2025 16:00 WG2479225 Total Xylenes 0.0156 0.00764 1 03/30/2025 16:00 WG2479225 Methyl tert-butyl ether ND 0.00118 1 03/30/2025 16:00 WG2479225 Naphthalene ND C3 0.0147 1 03/30/2025 16:00 WG2479225 (S) Toluene-d8 97.1 75.0-131 03/30/2025 16:00 WG2479225 (S) 4-Bromofluorobenzene 94.5 67.0-138 03/30/2025 16:00 WG2479225 (S) 1,2-Dichloroethane-d4 90.7 70.0-130 03/30/2025 16:00 WG2479225 Semi-Volatile Organic Compounds (GC) by Method 8015 Result (dry)Qualifier RDL (dry)Dilution Analysis Batch Analyte mg/kg mg/kg date / time TPH (GC/FID) High Fraction 738 432 100 04/02/2025 01:47 WG2479468 (S) o-Terphenyl 105 J7 18.0-148 04/02/2025 01:47 WG2479468 1 Cp 2 Tc 3 Ss 4 Cn 5 Sr 6 Qc 7 Gl 8 Al 9 Sc ACCOUNT:PROJECT:SDG:DATE/TIME:PAGE: Broadbent & Associates - UT Pilot 746-605-13 L1839869 04/04/25 22:45 5 of 23 ACCOUNT:PROJECT:SDG:DATE/TIME:PAGE: Broadbent & Associates - UT Pilot 746-605-13 L1839869 04/05/25 10:14 5 of 23 SAMPLE RESULTS - 02 L1839869 MW-5A@10 Collected date/time: 03/20/25 11:00 Total Solids by Method 2540 G-2011 Result Qualifier Dilution Analysis Batch Analyte %date / time Total Solids 82.3 1 03/26/2025 11:31 WG2476682 Volatile Organic Compounds (GC) by Method 8015D/GRO Result (dry)Qualifier RDL (dry)Dilution Analysis Batch Analyte mg/kg mg/kg date / time TPH (GC/FID) Low Fraction ND 3.80 25 03/28/2025 22:34 WG2478994 (S) a,a,a-Trifluorotoluene(FID)98.0 77.0-120 03/28/2025 22:34 WG2478994 Volatile Organic Compounds (GC/MS) by Method 8260B Result (dry)Qualifier RDL (dry)Dilution Analysis Batch Analyte mg/kg mg/kg date / time Benzene ND 0.00152 1 03/30/2025 16:20 WG2479225 Toluene ND 0.00759 1 03/30/2025 16:20 WG2479225 Ethylbenzene ND 0.00380 1 03/30/2025 16:20 WG2479225 Total Xylenes ND 0.00987 1 03/30/2025 16:20 WG2479225 Methyl tert-butyl ether ND 0.00152 1 03/30/2025 16:20 WG2479225 Naphthalene ND C3 0.0190 1 03/30/2025 16:20 WG2479225 (S) Toluene-d8 97.5 75.0-131 03/30/2025 16:20 WG2479225 (S) 4-Bromofluorobenzene 101 67.0-138 03/30/2025 16:20 WG2479225 (S) 1,2-Dichloroethane-d4 92.1 70.0-130 03/30/2025 16:20 WG2479225 Semi-Volatile Organic Compounds (GC) by Method 8015 Result (dry)Qualifier RDL (dry)Dilution Analysis Batch Analyte mg/kg mg/kg date / time TPH (GC/FID) High Fraction 73.7 48.6 10 04/01/2025 23:17 WG2480085 (S) o-Terphenyl 108 18.0-148 04/01/2025 23:17 WG2480085 1 Cp 2 Tc 3 Ss 4 Cn 5 Sr 6 Qc 7 Gl 8 Al 9 Sc ACCOUNT:PROJECT:SDG:DATE/TIME:PAGE: Broadbent & Associates - UT Pilot 746-605-13 L1839869 04/04/25 22:45 6 of 23 ACCOUNT:PROJECT:SDG:DATE/TIME:PAGE: Broadbent & Associates - UT Pilot 746-605-13 L1839869 04/05/25 10:14 6 of 23 SAMPLE RESULTS - 03 L1839869 MW-13@6 Collected date/time: 03/20/25 14:00 Total Solids by Method 2540 G-2011 Result Qualifier Dilution Analysis Batch Analyte %date / time Total Solids 86.5 1 03/26/2025 11:31 WG2476682 Volatile Organic Compounds (GC) by Method 8015D/GRO Result (dry)Qualifier RDL (dry)Dilution Analysis Batch Analyte mg/kg mg/kg date / time TPH (GC/FID) Low Fraction ND 3.43 25 03/28/2025 22:53 WG2478994 (S) a,a,a-Trifluorotoluene(FID)95.9 77.0-120 03/28/2025 22:53 WG2478994 Volatile Organic Compounds (GC/MS) by Method 8260B Result (dry)Qualifier RDL (dry)Dilution Analysis Batch Analyte mg/kg mg/kg date / time Benzene ND 0.00137 1 03/30/2025 16:40 WG2479225 Toluene ND 0.00687 1 03/30/2025 16:40 WG2479225 Ethylbenzene ND 0.00343 1 03/30/2025 16:40 WG2479225 Total Xylenes ND 0.00893 1 03/30/2025 16:40 WG2479225 Methyl tert-butyl ether ND 0.00137 1 03/30/2025 16:40 WG2479225 Naphthalene ND C3 0.0172 1 03/30/2025 16:40 WG2479225 (S) Toluene-d8 97.2 75.0-131 03/30/2025 16:40 WG2479225 (S) 4-Bromofluorobenzene 99.5 67.0-138 03/30/2025 16:40 WG2479225 (S) 1,2-Dichloroethane-d4 95.4 70.0-130 03/30/2025 16:40 WG2479225 Semi-Volatile Organic Compounds (GC) by Method 8015 Result (dry)Qualifier RDL (dry)Dilution Analysis Batch Analyte mg/kg mg/kg date / time TPH (GC/FID) High Fraction 26.3 23.1 5 04/01/2025 23:04 WG2480085 (S) o-Terphenyl 118 18.0-148 04/01/2025 23:04 WG2480085 1 Cp 2 Tc 3 Ss 4 Cn 5 Sr 6 Qc 7 Gl 8 Al 9 Sc ACCOUNT:PROJECT:SDG:DATE/TIME:PAGE: Broadbent & Associates - UT Pilot 746-605-13 L1839869 04/04/25 22:45 7 of 23 ACCOUNT:PROJECT:SDG:DATE/TIME:PAGE: Broadbent & Associates - UT Pilot 746-605-13 L1839869 04/05/25 10:14 7 of 23 SAMPLE RESULTS - 04 L1839869 MW-13@9 Collected date/time: 03/20/25 14:10 Total Solids by Method 2540 G-2011 Result Qualifier Dilution Analysis Batch Analyte %date / time Total Solids 74.5 1 03/26/2025 11:31 WG2476682 Volatile Organic Compounds (GC) by Method 8015D/GRO Result (dry)Qualifier RDL (dry)Dilution Analysis Batch Analyte mg/kg mg/kg date / time TPH (GC/FID) Low Fraction 193 17.2 100 04/01/2025 00:59 WG2480344 (S) a,a,a-Trifluorotoluene(FID)102 77.0-120 04/01/2025 00:59 WG2480344 Volatile Organic Compounds (GC/MS) by Method 8260B Result (dry)Qualifier RDL (dry)Dilution Analysis Batch Analyte mg/kg mg/kg date / time Benzene ND 0.0172 10 04/01/2025 15:05 WG2480446 Toluene ND 0.0861 10 04/01/2025 15:05 WG2480446 Ethylbenzene ND 0.0430 10 04/01/2025 15:05 WG2480446 Total Xylenes ND 0.112 10 04/01/2025 15:05 WG2480446 Methyl tert-butyl ether ND 0.0172 10 04/01/2025 15:05 WG2480446 Naphthalene 5.46 0.215 10 04/01/2025 15:05 WG2480446 (S) Toluene-d8 101 75.0-131 04/01/2025 15:05 WG2480446 (S) 4-Bromofluorobenzene 131 67.0-138 04/01/2025 15:05 WG2480446 (S) 1,2-Dichloroethane-d4 97.2 70.0-130 04/01/2025 15:05 WG2480446 Semi-Volatile Organic Compounds (GC) by Method 8015 Result (dry)Qualifier RDL (dry)Dilution Analysis Batch Analyte mg/kg mg/kg date / time TPH (GC/FID) High Fraction 10500 2680 500 04/02/2025 00:22 WG2480085 (S) o-Terphenyl 0.000 J7 18.0-148 04/02/2025 00:22 WG2480085 1 Cp 2 Tc 3 Ss 4 Cn 5 Sr 6 Qc 7 Gl 8 Al 9 Sc ACCOUNT:PROJECT:SDG:DATE/TIME:PAGE: Broadbent & Associates - UT Pilot 746-605-13 L1839869 04/04/25 22:45 8 of 23 ACCOUNT:PROJECT:SDG:DATE/TIME:PAGE: Broadbent & Associates - UT Pilot 746-605-13 L1839869 04/05/25 10:14 8 of 23 SAMPLE RESULTS - 05 L1839869 MW-14@6 Collected date/time: 03/20/25 17:30 Total Solids by Method 2540 G-2011 Result Qualifier Dilution Analysis Batch Analyte %date / time Total Solids 91.3 1 03/26/2025 11:31 WG2476682 Volatile Organic Compounds (GC) by Method 8015D/GRO Result (dry)Qualifier RDL (dry)Dilution Analysis Batch Analyte mg/kg mg/kg date / time TPH (GC/FID) Low Fraction ND 2.99 25 03/28/2025 23:12 WG2478994 (S) a,a,a-Trifluorotoluene(FID)96.0 77.0-120 03/28/2025 23:12 WG2478994 Volatile Organic Compounds (GC/MS) by Method 8260B Result (dry)Qualifier RDL (dry)Dilution Analysis Batch Analyte mg/kg mg/kg date / time Benzene 0.0136 0.00120 1 03/31/2025 00:57 WG2479385 Toluene 0.0330 0.00598 1 03/31/2025 00:57 WG2479385 Ethylbenzene ND 0.00299 1 03/31/2025 00:57 WG2479385 Total Xylenes 0.0230 0.00777 1 03/31/2025 00:57 WG2479385 Methyl tert-butyl ether ND 0.00120 1 03/31/2025 00:57 WG2479385 Naphthalene ND 0.0149 1 03/31/2025 00:57 WG2479385 (S) Toluene-d8 97.8 75.0-131 03/31/2025 00:57 WG2479385 (S) 4-Bromofluorobenzene 102 67.0-138 03/31/2025 00:57 WG2479385 (S) 1,2-Dichloroethane-d4 101 70.0-130 03/31/2025 00:57 WG2479385 Semi-Volatile Organic Compounds (GC) by Method 8015 Result (dry)Qualifier RDL (dry)Dilution Analysis Batch Analyte mg/kg mg/kg date / time TPH (GC/FID) High Fraction 30.0 8.76 2 04/04/2025 13:24 WG2481834 (S) o-Terphenyl 50.9 18.0-148 04/04/2025 13:24 WG2481834 Sample Narrative: L1839869-05 WG2481834: Dilution due to matrix impact during extract concentration procedure. 1 Cp 2 Tc 3 Ss 4 Cn 5 Sr 6 Qc 7 Gl 8 Al 9 Sc ACCOUNT:PROJECT:SDG:DATE/TIME:PAGE: Broadbent & Associates - UT Pilot 746-605-13 L1839869 04/04/25 22:45 9 of 23 ACCOUNT:PROJECT:SDG:DATE/TIME:PAGE: Broadbent & Associates - UT Pilot 746-605-13 L1839869 04/05/25 10:14 9 of 23 SAMPLE RESULTS - 06 L1839869 MW-14@9 Collected date/time: 03/20/25 17:40 Total Solids by Method 2540 G-2011 Result Qualifier Dilution Analysis Batch Analyte %date / time Total Solids 63.1 1 03/26/2025 11:21 WG2476709 Volatile Organic Compounds (GC) by Method 8015D/GRO Result (dry)Qualifier RDL (dry)Dilution Analysis Batch Analyte mg/kg mg/kg date / time TPH (GC/FID) Low Fraction ND 5.62 25 03/28/2025 23:32 WG2478994 (S) a,a,a-Trifluorotoluene(FID)99.5 77.0-120 03/28/2025 23:32 WG2478994 Volatile Organic Compounds (GC/MS) by Method 8260B Result (dry)Qualifier RDL (dry)Dilution Analysis Batch Analyte mg/kg mg/kg date / time Benzene ND 0.00225 1 03/31/2025 01:16 WG2479385 Toluene ND 0.0112 1 03/31/2025 01:16 WG2479385 Ethylbenzene ND 0.00562 1 03/31/2025 01:16 WG2479385 Total Xylenes ND 0.0146 1 03/31/2025 01:16 WG2479385 Methyl tert-butyl ether ND 0.00225 1 03/31/2025 01:16 WG2479385 Naphthalene ND 0.0281 1 03/31/2025 01:16 WG2479385 (S) Toluene-d8 105 75.0-131 03/31/2025 01:16 WG2479385 (S) 4-Bromofluorobenzene 109 67.0-138 03/31/2025 01:16 WG2479385 (S) 1,2-Dichloroethane-d4 102 70.0-130 03/31/2025 01:16 WG2479385 Semi-Volatile Organic Compounds (GC) by Method 8015 Result (dry)Qualifier RDL (dry)Dilution Analysis Batch Analyte mg/kg mg/kg date / time TPH (GC/FID) High Fraction ND 6.34 1 04/01/2025 18:56 WG2480085 (S) o-Terphenyl 88.4 18.0-148 04/01/2025 18:56 WG2480085 1 Cp 2 Tc 3 Ss 4 Cn 5 Sr 6 Qc 7 Gl 8 Al 9 Sc ACCOUNT:PROJECT:SDG:DATE/TIME:PAGE: Broadbent & Associates - UT Pilot 746-605-13 L1839869 04/04/25 22:45 10 of 23 ACCOUNT:PROJECT:SDG:DATE/TIME:PAGE: Broadbent & Associates - UT Pilot 746-605-13 L1839869 04/05/25 10:14 10 of 23 QUALITY CONTROL SUMMARYWG2476682 Total Solids by Method 2540 G-2011 L1839869-01,02,03,04,05 Method Blank (MB) (MB) R4191628-1 03/26/25 11:31 MB Result MB Qualifier MB MDL MB RDL Analyte %%% Total Solids 0.00100 L1839869-01 Original Sample (OS) • Duplicate (DUP) (OS) L1839869-01 03/26/25 11:31 • (DUP) R4191628-3 03/26/25 11:31 Original Result DUP Result Dilution DUP RPD DUP Qualifier DUP RPD Limits Analyte %%%% Total Solids 92.6 92.8 1 0.171 10 Laboratory Control Sample (LCS) (LCS) R4191628-2 03/26/25 11:31 Spike Amount LCS Result LCS Rec.Rec. Limits LCS Qualifier Analyte %%%% Total Solids 50.0 50.0 100 90.0-110 1 Cp 2 Tc 3 Ss 4 Cn 5 Sr 6 Qc 7 Gl 8 Al 9 Sc ACCOUNT:PROJECT:SDG:DATE/TIME:PAGE: Broadbent & Associates - UT Pilot 746-605-13 L1839869 04/04/25 22:45 11 of 23 ACCOUNT:PROJECT:SDG:DATE/TIME:PAGE: Broadbent & Associates - UT Pilot 746-605-13 L1839869 04/05/25 10:14 11 of 23 QUALITY CONTROL SUMMARYWG2476709 Total Solids by Method 2540 G-2011 L1839869-06 Method Blank (MB) (MB) R4191627-1 03/26/25 11:21 MB Result MB Qualifier MB MDL MB RDL Analyte %%% Total Solids 0.000 L1839879-02 Original Sample (OS) • Duplicate (DUP) (OS) L1839879-02 03/26/25 11:21 • (DUP) R4191627-3 03/26/25 11:21 Original Result DUP Result Dilution DUP RPD DUP Qualifier DUP RPD Limits Analyte %%%% Total Solids 75.3 78.1 1 3.64 10 Laboratory Control Sample (LCS) (LCS) R4191627-2 03/26/25 11:21 Spike Amount LCS Result LCS Rec.Rec. Limits LCS Qualifier Analyte %%%% Total Solids 50.0 50.0 100 90.0-110 1 Cp 2 Tc 3 Ss 4 Cn 5 Sr 6 Qc 7 Gl 8 Al 9 Sc ACCOUNT:PROJECT:SDG:DATE/TIME:PAGE: Broadbent & Associates - UT Pilot 746-605-13 L1839869 04/04/25 22:45 12 of 23 ACCOUNT:PROJECT:SDG:DATE/TIME:PAGE: Broadbent & Associates - UT Pilot 746-605-13 L1839869 04/05/25 10:14 12 of 23 QUALITY CONTROL SUMMARYWG2478994 Volatile Organic Compounds (GC) by Method 8015D/GRO L1839869-01,02,03,05,06 Method Blank (MB) (MB) R4193303-3 03/28/25 20:38 MB Result MB Qualifier MB MDL MB RDL Analyte mg/kg mg/kg mg/kg TPH (GC/FID) Low Fraction U 0.543 2.50 (S) a,a,a-Trifluorotoluene(FID)97.1 77.0-120 Laboratory Control Sample (LCS) • Laboratory Control Sample Duplicate (LCSD) (LCS) R4193303-1 03/28/25 18:55 • (LCSD) R4193303-2 03/28/25 19:14 Spike Amount LCS Result LCSD Result LCS Rec.LCSD Rec.Rec. Limits LCS Qualifier LCSD Qualifier RPD RPD Limits Analyte mg/kg mg/kg mg/kg %%%%% TPH (GC/FID) Low Fraction 5.00 4.65 5.61 93.0 112 72.0-127 18.7 20 (S) a,a,a-Trifluorotoluene(FID) 101 105 77.0-120 L1839869-01 Original Sample (OS) • Matrix Spike (MS) • Matrix Spike Duplicate (MSD) (OS) L1839869-01 03/28/25 22:14 • (MS) R4193303-4 03/29/25 07:44 • (MSD) R4193303-5 03/29/25 08:03 Spike Amount (dry) Original Result (dry)MS Result (dry)MSD Result (dry)MS Rec.MSD Rec.Dilution Rec. Limits MS Qualifier MSD Qualifier RPD RPD Limits Analyte mg/kg mg/kg mg/kg mg/kg %%%%% TPH (GC/FID) Low Fraction 121 ND 167 154 137 126 25 10.0-151 8.06 28 (S) a,a,a-Trifluorotoluene(FID) 114 108 77.0-120 1 Cp 2 Tc 3 Ss 4 Cn 5 Sr 6 Qc 7 Gl 8 Al 9 Sc ACCOUNT:PROJECT:SDG:DATE/TIME:PAGE: Broadbent & Associates - UT Pilot 746-605-13 L1839869 04/04/25 22:45 13 of 23 ACCOUNT:PROJECT:SDG:DATE/TIME:PAGE: Broadbent & Associates - UT Pilot 746-605-13 L1839869 04/05/25 10:14 13 of 23 QUALITY CONTROL SUMMARYWG2480344 Volatile Organic Compounds (GC) by Method 8015D/GRO L1839869-04 Method Blank (MB) (MB) R4193467-3 03/31/25 23:36 MB Result MB Qualifier MB MDL MB RDL Analyte mg/kg mg/kg mg/kg TPH (GC/FID) Low Fraction U 0.543 2.50 (S) a,a,a-Trifluorotoluene(FID)102 77.0-120 Laboratory Control Sample (LCS) • Laboratory Control Sample Duplicate (LCSD) (LCS) R4193467-1 03/31/25 21:05 • (LCSD) R4193467-2 03/31/25 22:21 Spike Amount LCS Result LCSD Result LCS Rec.LCSD Rec.Rec. Limits LCS Qualifier LCSD Qualifier RPD RPD Limits Analyte mg/kg mg/kg mg/kg %%%%% TPH (GC/FID) Low Fraction 5.00 5.63 4.96 113 99.2 72.0-127 12.7 20 (S) a,a,a-Trifluorotoluene(FID) 109 101 77.0-120 1 Cp 2 Tc 3 Ss 4 Cn 5 Sr 6 Qc 7 Gl 8 Al 9 Sc ACCOUNT:PROJECT:SDG:DATE/TIME:PAGE: Broadbent & Associates - UT Pilot 746-605-13 L1839869 04/04/25 22:45 14 of 23 ACCOUNT:PROJECT:SDG:DATE/TIME:PAGE: Broadbent & Associates - UT Pilot 746-605-13 L1839869 04/05/25 10:14 14 of 23 QUALITY CONTROL SUMMARYWG2479225 Volatile Organic Compounds (GC/MS) by Method 8260B L1839869-01,02,03 Method Blank (MB) (MB) R4193399-3 03/30/25 11:51 MB Result MB Qualifier MB MDL MB RDL Analyte mg/kg mg/kg mg/kg Benzene U 0.000467 0.00100 Toluene U 0.00130 0.00500 Ethylbenzene U 0.000737 0.00250 Total Xylenes U 0.000880 0.00650 Methyl tert-butyl ether U 0.000350 0.00100 Naphthalene U 0.00488 0.0125 (S) Toluene-d8 96.5 75.0-131 (S) 4-Bromofluorobenzene 98.2 67.0-138 (S) 1,2-Dichloroethane-d4 92.2 70.0-130 Laboratory Control Sample (LCS) • Laboratory Control Sample Duplicate (LCSD) (LCS) R4193399-1 03/30/25 10:11 • (LCSD) R4193399-2 03/30/25 10:31 Spike Amount LCS Result LCSD Result LCS Rec.LCSD Rec.Rec. Limits LCS Qualifier LCSD Qualifier RPD RPD Limits Analyte mg/kg mg/kg mg/kg %%%%% Benzene 0.125 0.138 0.115 110 92.0 70.0-123 18.2 20 Toluene 0.125 0.135 0.116 108 92.8 75.0-121 15.1 20 Ethylbenzene 0.125 0.132 0.117 106 93.6 74.0-126 12.0 20 Total Xylenes 0.375 0.364 0.336 97.1 89.6 72.0-127 8.00 20 Methyl tert-butyl ether 0.125 0.148 0.123 118 98.4 66.0-132 18.5 20 Naphthalene 0.125 0.0867 0.0763 69.4 61.0 59.0-130 12.8 20 (S) Toluene-d8 97.0 97.4 75.0-131 (S) 4-Bromofluorobenzene 97.0 97.9 67.0-138 (S) 1,2-Dichloroethane-d4 100 97.2 70.0-130 L1839417-05 Original Sample (OS) • Matrix Spike (MS) • Matrix Spike Duplicate (MSD) (OS) L1839417-05 03/30/25 13:01 • (MS) R4193399-4 03/30/25 19:40 • (MSD) R4193399-5 03/30/25 20:00 Spike Amount Original Result MS Result MSD Result MS Rec.MSD Rec.Dilution Rec. Limits MS Qualifier MSD Qualifier RPD RPD Limits Analyte mg/kg mg/kg mg/kg mg/kg %%%%% Benzene 0.125 ND 0.0654 0.0779 52.3 62.3 1 10.0-149 17.4 37 Toluene 0.125 ND 0.0676 0.0791 54.1 63.3 1 10.0-156 15.7 38 Ethylbenzene 0.125 ND 0.0662 0.0736 53.0 58.9 1 10.0-160 10.6 38 Total Xylenes 0.375 ND 0.205 0.193 54.7 51.5 1 10.0-160 6.03 38 Methyl tert-butyl ether 0.125 ND 0.121 0.121 96.8 96.8 1 11.0-147 0.000 35 Naphthalene 0.125 ND 0.0908 0.0821 72.6 65.7 1 10.0-160 10.1 36 (S) Toluene-d8 98.1 95.6 75.0-131 (S) 4-Bromofluorobenzene 100 92.8 67.0-138 (S) 1,2-Dichloroethane-d4 89.6 92.9 70.0-130 1 Cp 2 Tc 3 Ss 4 Cn 5 Sr 6 Qc 7 Gl 8 Al 9 Sc ACCOUNT:PROJECT:SDG:DATE/TIME:PAGE: Broadbent & Associates - UT Pilot 746-605-13 L1839869 04/04/25 22:45 15 of 23 ACCOUNT:PROJECT:SDG:DATE/TIME:PAGE: Broadbent & Associates - UT Pilot 746-605-13 L1839869 04/05/25 10:14 15 of 23 QUALITY CONTROL SUMMARYWG2479385 Volatile Organic Compounds (GC/MS) by Method 8260B L1839869-05,06 Method Blank (MB) (MB) R4193440-3 03/31/25 00:19 MB Result MB Qualifier MB MDL MB RDL Analyte mg/kg mg/kg mg/kg Benzene U 0.000467 0.00100 Toluene U 0.00130 0.00500 Ethylbenzene U 0.000737 0.00250 Total Xylenes U 0.000880 0.00650 Methyl tert-butyl ether U 0.000350 0.00100 Naphthalene U 0.00488 0.0125 (S) Toluene-d8 101 75.0-131 (S) 4-Bromofluorobenzene 101 67.0-138 (S) 1,2-Dichloroethane-d4 101 70.0-130 Laboratory Control Sample (LCS) • Laboratory Control Sample Duplicate (LCSD) (LCS) R4193440-1 03/30/25 22:44 • (LCSD) R4193440-2 03/30/25 23:03 Spike Amount LCS Result LCSD Result LCS Rec.LCSD Rec.Rec. Limits LCS Qualifier LCSD Qualifier RPD RPD Limits Analyte mg/kg mg/kg mg/kg %%%%% Benzene 0.125 0.120 0.115 96.0 92.0 70.0-123 4.26 20 Toluene 0.125 0.119 0.116 95.2 92.8 75.0-121 2.55 20 Ethylbenzene 0.125 0.131 0.123 105 98.4 74.0-126 6.30 20 Total Xylenes 0.375 0.385 0.354 103 94.4 72.0-127 8.39 20 Methyl tert-butyl ether 0.125 0.142 0.127 114 102 66.0-132 11.2 20 Naphthalene 0.125 0.143 0.147 114 118 59.0-130 2.76 20 (S) Toluene-d8 94.8 102 75.0-131 (S) 4-Bromofluorobenzene 101 98.0 67.0-138 (S) 1,2-Dichloroethane-d4 104 102 70.0-130 1 Cp 2 Tc 3 Ss 4 Cn 5 Sr 6 Qc 7 Gl 8 Al 9 Sc ACCOUNT:PROJECT:SDG:DATE/TIME:PAGE: Broadbent & Associates - UT Pilot 746-605-13 L1839869 04/04/25 22:45 16 of 23 ACCOUNT:PROJECT:SDG:DATE/TIME:PAGE: Broadbent & Associates - UT Pilot 746-605-13 L1839869 04/05/25 10:14 16 of 23 QUALITY CONTROL SUMMARYWG2480446 Volatile Organic Compounds (GC/MS) by Method 8260B L1839869-04 Method Blank (MB) (MB) R4193791-2 04/01/25 12:35 MB Result MB Qualifier MB MDL MB RDL Analyte mg/kg mg/kg mg/kg Benzene U 0.000467 0.00100 Toluene U 0.00130 0.00500 Ethylbenzene U 0.000737 0.00250 Total Xylenes U 0.000880 0.00650 Methyl tert-butyl ether U 0.000350 0.00100 Naphthalene U 0.00488 0.0125 (S) Toluene-d8 84.7 75.0-131 (S) 4-Bromofluorobenzene 114 67.0-138 (S) 1,2-Dichloroethane-d4 99.5 70.0-130 Laboratory Control Sample (LCS) (LCS) R4193791-1 04/01/25 11:18 Spike Amount LCS Result LCS Rec.Rec. Limits LCS Qualifier Analyte mg/kg mg/kg %% Benzene 0.125 0.125 100 70.0-123 Toluene 0.125 0.126 101 75.0-121 Ethylbenzene 0.125 0.123 98.4 74.0-126 Total Xylenes 0.375 0.375 100 72.0-127 Methyl tert-butyl ether 0.125 0.141 113 66.0-132 Naphthalene 0.125 0.128 102 59.0-130 (S) Toluene-d8 101 75.0-131 (S) 4-Bromofluorobenzene 106 67.0-138 (S) 1,2-Dichloroethane-d4 104 70.0-130 1 Cp 2 Tc 3 Ss 4 Cn 5 Sr 6 Qc 7 Gl 8 Al 9 Sc ACCOUNT:PROJECT:SDG:DATE/TIME:PAGE: Broadbent & Associates - UT Pilot 746-605-13 L1839869 04/04/25 22:45 17 of 23 ACCOUNT:PROJECT:SDG:DATE/TIME:PAGE: Broadbent & Associates - UT Pilot 746-605-13 L1839869 04/05/25 10:14 17 of 23 QUALITY CONTROL SUMMARYWG2479468 Semi-Volatile Organic Compounds (GC) by Method 8015 L1839869-01 Method Blank (MB) (MB) R4194106-1 04/01/25 19:43 MB Result MB Qualifier MB MDL MB RDL Analyte mg/kg mg/kg mg/kg TPH (GC/FID) High Fraction U 0.769 4.00 (S) o-Terphenyl 60.1 18.0-148 Laboratory Control Sample (LCS) (LCS) R4194106-2 04/01/25 19:57 Spike Amount LCS Result LCS Rec.Rec. Limits LCS Qualifier Analyte mg/kg mg/kg %% TPH (GC/FID) High Fraction 50.0 35.8 71.6 50.0-150 (S) o-Terphenyl 64.0 18.0-148 L1841207-01 Original Sample (OS) • Matrix Spike (MS) • Matrix Spike Duplicate (MSD) (OS) L1841207-01 04/01/25 22:59 • (MS) R4194106-3 04/01/25 23:13 • (MSD) R4194106-4 04/01/25 23:27 Spike Amount Original Result MS Result MSD Result MS Rec.MSD Rec.Dilution Rec. Limits MS Qualifier MSD Qualifier RPD RPD Limits Analyte mg/kg mg/kg mg/kg mg/kg %%%%% TPH (GC/FID) High Fraction 48.6 ND 30.5 33.9 62.8 70.6 1 50.0-150 10.6 20 (S) o-Terphenyl 49.8 59.4 18.0-148 1 Cp 2 Tc 3 Ss 4 Cn 5 Sr 6 Qc 7 Gl 8 Al 9 Sc ACCOUNT:PROJECT:SDG:DATE/TIME:PAGE: Broadbent & Associates - UT Pilot 746-605-13 L1839869 04/04/25 22:45 18 of 23 ACCOUNT:PROJECT:SDG:DATE/TIME:PAGE: Broadbent & Associates - UT Pilot 746-605-13 L1839869 04/05/25 10:14 18 of 23 QUALITY CONTROL SUMMARYWG2480085 Semi-Volatile Organic Compounds (GC) by Method 8015 L1839869-02,03,04,06 Method Blank (MB) (MB) R4194040-1 04/01/25 18:04 MB Result MB Qualifier MB MDL MB RDL Analyte mg/kg mg/kg mg/kg TPH (GC/FID) High Fraction U 0.769 4.00 (S) o-Terphenyl 150 J1 18.0-148 Laboratory Control Sample (LCS) (LCS) R4194040-2 04/01/25 18:17 Spike Amount LCS Result LCS Rec.Rec. Limits LCS Qualifier Analyte mg/kg mg/kg %% TPH (GC/FID) High Fraction 50.0 38.0 76.0 50.0-150 (S) o-Terphenyl 147 18.0-148 1 Cp 2 Tc 3 Ss 4 Cn 5 Sr 6 Qc 7 Gl 8 Al 9 Sc ACCOUNT:PROJECT:SDG:DATE/TIME:PAGE: Broadbent & Associates - UT Pilot 746-605-13 L1839869 04/04/25 22:45 19 of 23 ACCOUNT:PROJECT:SDG:DATE/TIME:PAGE: Broadbent & Associates - UT Pilot 746-605-13 L1839869 04/05/25 10:14 19 of 23 QUALITY CONTROL SUMMARYWG2481834 Semi-Volatile Organic Compounds (GC) by Method 8015 L1839869-05 Method Blank (MB) (MB) R4195465-1 04/04/25 10:47 MB Result MB Qualifier MB MDL MB RDL Analyte mg/kg mg/kg mg/kg TPH (GC/FID) High Fraction U 0.769 4.00 (S) o-Terphenyl 71.2 18.0-148 Laboratory Control Sample (LCS) (LCS) R4195465-2 04/04/25 11:01 Spike Amount LCS Result LCS Rec.Rec. Limits LCS Qualifier Analyte mg/kg mg/kg %% TPH (GC/FID) High Fraction 50.0 39.2 78.4 50.0-150 (S) o-Terphenyl 69.7 18.0-148 L1839869-05 Original Sample (OS) • Matrix Spike (MS) • Matrix Spike Duplicate (MSD) (OS) L1839869-05 04/04/25 13:24 • (MS) R4195465-3 04/04/25 13:38 • (MSD) R4195465-4 04/04/25 13:53 Spike Amount (dry) Original Result (dry)MS Result (dry)MSD Result (dry)MS Rec.MSD Rec.Dilution Rec. Limits MS Qualifier MSD Qualifier RPD RPD Limits Analyte mg/kg mg/kg mg/kg mg/kg %%%%% TPH (GC/FID) High Fraction 54.7 30.0 76.3 73.6 84.6 79.9 2 50.0-150 3.65 20 (S) o-Terphenyl 55.5 57.7 18.0-148 Sample Narrative: OS: Dilution due to matrix impact during extract concentration procedure. 1 Cp 2 Tc 3 Ss 4 Cn 5 Sr 6 Qc 7 Gl 8 Al 9 Sc ACCOUNT:PROJECT:SDG:DATE/TIME:PAGE: Broadbent & Associates - UT Pilot 746-605-13 L1839869 04/04/25 22:45 20 of 23 ACCOUNT:PROJECT:SDG:DATE/TIME:PAGE: Broadbent & Associates - UT Pilot 746-605-13 L1839869 04/05/25 10:14 20 of 23 GLOSSARY OF TERMS Guide to Reading and Understanding Your Laboratory Report The information below is designed to better explain the various terms used in your report of analytical results from the Laboratory. This is not intended as a comprehensive explanation, and if you have additional questions please contact your project representative. Results Disclaimer - Information that may be provided by the customer, and contained within this report, include Permit Limits, Project Name, Sample ID, Sample Matrix, Sample Preservation, Field Blanks, Field Spikes, Field Duplicates, On-Site Data, Sampling Collection Dates/Times, and Sampling Location. Results relate to the accuracy of this information provided, and as the samples are received. Abbreviations and Definitions (dry)Results are reported based on the dry weight of the sample. [this will only be present on a dry report basis for soils]. MDL Method Detection Limit. ND Not detected at the Reporting Limit (or MDL where applicable). RDL Reported Detection Limit. RDL (dry)Reported Detection Limit. Rec.Recovery. RPD Relative Percent Difference. SDG Sample Delivery Group. (S) Surrogate (Surrogate Standard) - Analytes added to every blank, sample, Laboratory Control Sample/Duplicate and Matrix Spike/Duplicate; used to evaluate analytical efficiency by measuring recovery. Surrogates are not expected to be detected in all environmental media. U Not detected at the Reporting Limit (or MDL where applicable). Analyte The name of the particular compound or analysis performed. Some Analyses and Methods will have multiple analytes reported. Dilution If the sample matrix contains an interfering material, the sample preparation volume or weight values differ from the standard, or if concentrations of analytes in the sample are higher than the highest limit of concentration that the laboratory can accurately report, the sample may be diluted for analysis. If a value different than 1 is used in this field, the result reported has already been corrected for this factor. Limits These are the target % recovery ranges or % difference value that the laboratory has historically determined as normal for the method and analyte being reported. Successful QC Sample analysis will target all analytes recovered or duplicated within these ranges. Original Sample The non-spiked sample in the prep batch used to determine the Relative Percent Difference (RPD) from a quality control sample. The Original Sample may not be included within the reported SDG. Qualifier This column provides a letter and/or number designation that corresponds to additional information concerning the result reported. If a Qualifier is present, a definition per Qualifier is provided within the Glossary and Definitions page and potentially a discussion of possible implications of the Qualifier in the Case Narrative if applicable. Result The actual analytical final result (corrected for any sample specific characteristics) reported for your sample. If there was no measurable result returned for a specific analyte, the result in this column may state “ND” (Not Detected) or “BDL” (Below Detectable Levels). The information in the results column should always be accompanied by either an MDL (Method Detection Limit) or RDL (Reporting Detection Limit) that defines the lowest value that the laboratory could detect or report for this analyte. Uncertainty (Radiochemistry)Confidence level of 2 sigma. Case Narrative (Cn) A brief discussion about the included sample results, including a discussion of any non-conformances to protocol observed either at sample receipt by the laboratory from the field or during the analytical process. If present, there will be a section in the Case Narrative to discuss the meaning of any data qualifiers used in the report. Quality Control Summary (Qc) This section of the report includes the results of the laboratory quality control analyses required by procedure or analytical methods to assist in evaluating the validity of the results reported for your samples. These analyses are not being performed on your samples typically, but on laboratory generated material. Sample Chain of Custody (Sc) This is the document created in the field when your samples were initially collected. This is used to verify the time and date of collection, the person collecting the samples, and the analyses that the laboratory is requested to perform. This chain of custody also documents all persons (excluding commercial shippers) that have had control or possession of the samples from the time of collection until delivery to the laboratory for analysis. Sample Results (Sr) This section of your report will provide the results of all testing performed on your samples. These results are provided by sample ID and are separated by the analyses performed on each sample. The header line of each analysis section for each sample will provide the name and method number for the analysis reported. Sample Summary (Ss)This section of the Analytical Report defines the specific analyses performed for each sample ID, including the dates and times of preparation and/or analysis. Qualifier Description C3 The reported concentration is an estimate. The continuing calibration standard associated with this data responded low. Method sensitivity check is acceptable. J1 Surrogate recovery limits have been exceeded; values are outside upper control limits. J7 Surrogate recovery cannot be used for control limit evaluation due to dilution. 1 Cp 2 Tc 3 Ss 4 Cn 5 Sr 6 Qc 7 Gl 8 Al 9 Sc ACCOUNT:PROJECT:SDG:DATE/TIME:PAGE: Broadbent & Associates - UT Pilot 746-605-13 L1839869 04/04/25 22:45 21 of 23 ACCOUNT:PROJECT:SDG:DATE/TIME:PAGE: Broadbent & Associates - UT Pilot 746-605-13 L1839869 04/05/25 10:14 21 of 23 Pace Analytical National 12065 Lebanon Rd Mount Juliet, TN 37122 Alabama 40660 Nebraska NE-OS-15-05 Alaska 17-026 Nevada TN000032021-1 Arizona AZ0612 New Hampshire 2975 Arkansas 88-0469 New Jersey–NELAP TN002 California 2932 New Mexico ¹TN00003 Colorado TN00003 New York 11742 Connecticut PH-0197 North Carolina Env375 Florida E87487 North Carolina ¹DW21704 Georgia NELAP North Carolina ³41 Georgia ¹923 North Dakota R-140 Idaho TN00003 Ohio–VAP CL0069 Illinois 200008 Oklahoma 9915 Indiana C-TN-01 Oregon TN200002 Iowa 364 Pennsylvania 68-02979 Kansas E-10277 Rhode Island LAO00356 Kentucky ¹ ⁶KY90010 South Carolina 84004002 Kentucky ²16 South Dakota n/a Louisiana AI30792 Tennessee ¹ ⁴2006 Louisiana LA018 Texas T104704245-20-18 Maine TN00003 Texas ⁵LAB0152 Maryland 324 Utah TN000032021-11 Massachusetts M-TN003 Vermont VT2006 Michigan 9958 Virginia 110033 Minnesota 047-999-395 Washington C847 Mississippi TN00003 West Virginia 233 Missouri 340 Wisconsin 998093910 Montana CERT0086 Wyoming A2LA A2LA – ISO 17025 1461.01 AIHA-LAP,LLC EMLAP 100789 A2LA – ISO 17025 ⁵1461.02 DOD 1461.01 Canada 1461.01 USDA P330-15-00234 EPA–Crypto TN00003 ACCREDITATIONS & LOCATIONS ¹ Drinking Water ² Underground Storage Tanks ³ Aquatic Toxicity ⁴ Chemical/Microbiological ⁵ Mold ⁶ Wastewater n/a Accreditation not applicable * Not all certifications held by the laboratory are applicable to the results reported in the attached report. * Accreditation is only applicable to the test methods specified on each scope of accreditation held by Pace Analytical. 1 Cp 2 Tc 3 Ss 4 Cn 5 Sr 6 Qc 7 Gl 8 Al 9 Sc ACCOUNT:PROJECT:SDG:DATE/TIME:PAGE: Broadbent & Associates - UT Pilot 746-605-13 L1839869 04/04/25 22:45 22 of 23 ACCOUNT:PROJECT:SDG:DATE/TIME:PAGE: Broadbent & Associates - UT Pilot 746-605-13 L1839869 04/05/25 10:14 22 of 23 ANALYTICAL REPORT April 08, 2025 Broadbent & Associates - UT Pilot Sample Delivery Group:L1841974 Samples Received:04/01/2025 Project Number:746-605-13 Description:Flying J 746 - Salt Lake City, UT Report To:Aric Morton 186 East Main Street Suite 99 Sandy, UT 84070 Entire Report Reviewed By: April 08, 2025 [Preliminary Report] Jeff Carr Project Manager Results relate only to the items tested or calibrated and are reported as rounded values. This test report shall not be reproduced, except in full, without written approval of the laboratory. Where applicable, sampling conducted by Pace Analytical National is performed per guidance provided in laboratory standard operating procedures ENV-SOP-MTJL-0067 and ENV-SOP-MTJL-0068. Where sampling conducted by the customer, results relate to the accuracy of the information provided, and as the samples are received. Pace Analytical National 12065 Lebanon Rd Mount Juliet, TN 37122 615-758-5858 800-767-5859 mydata.pacelabs.com 1 Cp 2 Tc 3 Ss 4 Cn 5 Sr 6 Qc 7 Gl 8 Al 9 Sc ACCOUNT:PROJECT:SDG:DATE/TIME:PAGE: Broadbent & Associates - UT Pilot 746-605-13 L1841974 04/08/25 08:04 1 of 19 April 08, 2025 Jeff Carr Project Manager ACCOUNT:PROJECT:SDG:DATE/TIME:PAGE: Broadbent & Associates - UT Pilot 746-605-13 L1841974 04/08/25 08:31 1 of 19 TABLE OF CONTENTS Cp: Cover Page 1 Tc: Table of Contents 2 Ss: Sample Summary 3 Cn: Case Narrative 5 Sr: Sample Results 6 MW-1 L1841974-01 6 MW-2 L1841974-02 7 MW-3 L1841974-03 8 MW-4 L1841974-04 9 MW-5A L1841974-05 10 MW-13 L1841974-06 11 MW-14 L1841974-07 12 Qc: Quality Control Summary 13 Volatile Organic Compounds (GC) by Method 8015D/GRO 13 Volatile Organic Compounds (GC/MS) by Method 8260D 15 Semi-Volatile Organic Compounds (GC) by Method 8015D 16 Gl: Glossary of Terms 17 Al: Accreditations & Locations 18 Sc: Sample Chain of Custody 19 1 Cp 2 Tc 3 Ss 4 Cn 5 Sr 6 Qc 7 Gl 8 Al 9 Sc ACCOUNT:PROJECT:SDG:DATE/TIME:PAGE: Broadbent & Associates - UT Pilot 746-605-13 L1841974 04/08/25 08:04 2 of 19 ACCOUNT:PROJECT:SDG:DATE/TIME:PAGE: Broadbent & Associates - UT Pilot 746-605-13 L1841974 04/08/25 08:31 2 of 19 SAMPLE SUMMARY Collected by Collected date/time Received date/time MW-1 L1841974-01 GW Sarah Hamilton 03/28/25 15:30 04/01/25 08:00 Method Batch Dilution Preparation Analysis Analyst Location date/time date/time Volatile Organic Compounds (GC) by Method 8015D/GRO WG2484821 1 04/07/25 16:14 04/07/25 16:14 NCD Mt. Juliet, TN Volatile Organic Compounds (GC/MS) by Method 8260D WG2483992 1 04/06/25 03:03 04/06/25 03:03 ACG Mt. Juliet, TN Semi-Volatile Organic Compounds (GC) by Method 8015D WG2482095 1 04/03/25 10:56 04/04/25 05:56 DMG Mt. Juliet, TN Collected by Collected date/time Received date/time MW-2 L1841974-02 GW Sarah Hamilton 03/28/25 18:00 04/01/25 08:00 Method Batch Dilution Preparation Analysis Analyst Location date/time date/time Volatile Organic Compounds (GC) by Method 8015D/GRO WG2484821 1 04/07/25 16:36 04/07/25 16:36 NCD Mt. Juliet, TN Volatile Organic Compounds (GC/MS) by Method 8260D WG2483992 1 04/06/25 03:23 04/06/25 03:23 ACG Mt. Juliet, TN Semi-Volatile Organic Compounds (GC) by Method 8015D WG2482095 1 04/03/25 10:56 04/04/25 06:16 DMG Mt. Juliet, TN Collected by Collected date/time Received date/time MW-3 L1841974-03 GW Sarah Hamilton 03/28/25 17:00 04/01/25 08:00 Method Batch Dilution Preparation Analysis Analyst Location date/time date/time Volatile Organic Compounds (GC) by Method 8015D/GRO WG2484334 1 04/06/25 19:56 04/06/25 19:56 AEB Mt. Juliet, TN Volatile Organic Compounds (GC/MS) by Method 8260D WG2483992 1 04/06/25 03:43 04/06/25 03:43 ACG Mt. Juliet, TN Semi-Volatile Organic Compounds (GC) by Method 8015D WG2482095 1 04/03/25 10:56 04/04/25 06:36 DMG Mt. Juliet, TN Collected by Collected date/time Received date/time MW-4 L1841974-04 GW Sarah Hamilton 03/28/25 14:45 04/01/25 08:00 Method Batch Dilution Preparation Analysis Analyst Location date/time date/time Volatile Organic Compounds (GC) by Method 8015D/GRO WG2484334 1 04/06/25 20:17 04/06/25 20:17 AEB Mt. Juliet, TN Volatile Organic Compounds (GC/MS) by Method 8260D WG2483992 1 04/06/25 04:03 04/06/25 04:03 ACG Mt. Juliet, TN Semi-Volatile Organic Compounds (GC) by Method 8015D WG2482095 1 04/03/25 10:56 04/04/25 06:55 DMG Mt. Juliet, TN Collected by Collected date/time Received date/time MW-5A L1841974-05 GW Sarah Hamilton 03/30/25 10:00 04/01/25 08:00 Method Batch Dilution Preparation Analysis Analyst Location date/time date/time Volatile Organic Compounds (GC) by Method 8015D/GRO WG2484334 1 04/06/25 20:38 04/06/25 20:38 AEB Mt. Juliet, TN Volatile Organic Compounds (GC/MS) by Method 8260D WG2483992 1 04/06/25 04:23 04/06/25 04:23 ACG Mt. Juliet, TN Semi-Volatile Organic Compounds (GC) by Method 8015D WG2482095 1 04/03/25 10:56 04/04/25 13:17 MAA Mt. Juliet, TN Collected by Collected date/time Received date/time MW-13 L1841974-06 GW Sarah Hamilton 03/30/25 10:40 04/01/25 08:00 Method Batch Dilution Preparation Analysis Analyst Location date/time date/time Volatile Organic Compounds (GC) by Method 8015D/GRO WG2484334 1 04/06/25 20:59 04/06/25 20:59 AEB Mt. Juliet, TN Volatile Organic Compounds (GC/MS) by Method 8260D WG2483992 1 04/06/25 04:43 04/06/25 04:43 ACG Mt. Juliet, TN Semi-Volatile Organic Compounds (GC) by Method 8015D WG2482095 1 04/03/25 10:56 04/04/25 11:16 MAA Mt. Juliet, TN 1 Cp 2 Tc 3 Ss 4 Cn 5 Sr 6 Qc 7 Gl 8 Al 9 Sc ACCOUNT:PROJECT:SDG:DATE/TIME:PAGE: Broadbent & Associates - UT Pilot 746-605-13 L1841974 04/08/25 08:04 3 of 19 ACCOUNT:PROJECT:SDG:DATE/TIME:PAGE: Broadbent & Associates - UT Pilot 746-605-13 L1841974 04/08/25 08:31 3 of 19 SAMPLE SUMMARY Collected by Collected date/time Received date/time MW-14 L1841974-07 GW Sarah Hamilton 03/30/25 11:25 04/01/25 08:00 Method Batch Dilution Preparation Analysis Analyst Location date/time date/time Volatile Organic Compounds (GC) by Method 8015D/GRO WG2484334 1 04/06/25 21:20 04/06/25 21:20 AEB Mt. Juliet, TN Volatile Organic Compounds (GC/MS) by Method 8260D WG2483992 1 04/06/25 05:03 04/06/25 05:03 ACG Mt. Juliet, TN Semi-Volatile Organic Compounds (GC) by Method 8015D WG2482095 1 04/03/25 10:56 04/04/25 11:36 MAA Mt. Juliet, TN 1 Cp 2 Tc 3 Ss 4 Cn 5 Sr 6 Qc 7 Gl 8 Al 9 Sc ACCOUNT:PROJECT:SDG:DATE/TIME:PAGE: Broadbent & Associates - UT Pilot 746-605-13 L1841974 04/08/25 08:04 4 of 19 ACCOUNT:PROJECT:SDG:DATE/TIME:PAGE: Broadbent & Associates - UT Pilot 746-605-13 L1841974 04/08/25 08:31 4 of 19 CASE NARRATIVE All sample aliquots were received at the correct temperature, in the proper containers, with the appropriate preservatives, and within method specified holding times, unless qualified or notated within the report. Where applicable, all MDL (LOD) and RDL (LOQ) values reported for environmental samples have been corrected for the dilution factor used in the analysis. All Method and Batch Quality Control are within established criteria except where addressed in this case narrative, a non-conformance form or properly qualified within the sample results. By my digital signature below, I affirm to the best of my knowledge, all problems/anomalies observed by the laboratory as having the potential to affect the quality of the data have been identified by the laboratory, and no information or data have been knowingly withheld that would affect the quality of the data. [Preliminary Report] Jeff Carr Project Manager 1 Cp 2 Tc 3 Ss 4 Cn 5 Sr 6 Qc 7 Gl 8 Al 9 Sc ACCOUNT:PROJECT:SDG:DATE/TIME:PAGE: Broadbent & Associates - UT Pilot 746-605-13 L1841974 04/08/25 08:04 5 of 19 Jeff Carr Project Manager ACCOUNT:PROJECT:SDG:DATE/TIME:PAGE: Broadbent & Associates - UT Pilot 746-605-13 L1841974 04/08/25 08:31 5 of 19 SAMPLE RESULTS - 01 L1841974 MW-1 Collected date/time: 03/28/25 15:30 Volatile Organic Compounds (GC) by Method 8015D/GRO Result Qualifier RDL Dilution Analysis Batch Analyte ug/l ug/l date / time TPH (GC/FID) Low Fraction 996 J3 100 1 04/07/2025 16:14 WG2484821 (S) a,a,a-Trifluorotoluene(FID)95.7 78.0-120 04/07/2025 16:14 WG2484821 Volatile Organic Compounds (GC/MS) by Method 8260D Result Qualifier RDL Dilution Analysis Batch Analyte ug/l ug/l date / time Benzene 22.2 1.00 1 04/06/2025 03:03 WG2483992 Toluene ND 1.00 1 04/06/2025 03:03 WG2483992 Ethylbenzene 2.73 1.00 1 04/06/2025 03:03 WG2483992 Total Xylenes ND 3.00 1 04/06/2025 03:03 WG2483992 Methyl tert-butyl ether 4.01 1.00 1 04/06/2025 03:03 WG2483992 Naphthalene ND 5.00 1 04/06/2025 03:03 WG2483992 (S) Toluene-d8 103 80.0-120 04/06/2025 03:03 WG2483992 (S) 4-Bromofluorobenzene 97.8 77.0-126 04/06/2025 03:03 WG2483992 (S) 1,2-Dichloroethane-d4 91.5 70.0-130 04/06/2025 03:03 WG2483992 Semi-Volatile Organic Compounds (GC) by Method 8015D Result Qualifier RDL Dilution Analysis Batch Analyte ug/l ug/l date / time TPH (GC/FID) High Fraction 2550 100 1 04/04/2025 05:56 WG2482095 (S) o-Terphenyl 92.6 52.0-156 04/04/2025 05:56 WG2482095 1 Cp 2 Tc 3 Ss 4 Cn 5 Sr 6 Qc 7 Gl 8 Al 9 Sc ACCOUNT:PROJECT:SDG:DATE/TIME:PAGE: Broadbent & Associates - UT Pilot 746-605-13 L1841974 04/08/25 08:04 6 of 19 ACCOUNT:PROJECT:SDG:DATE/TIME:PAGE: Broadbent & Associates - UT Pilot 746-605-13 L1841974 04/08/25 08:31 6 of 19 SAMPLE RESULTS - 02 L1841974 MW-2 Collected date/time: 03/28/25 18:00 Volatile Organic Compounds (GC) by Method 8015D/GRO Result Qualifier RDL Dilution Analysis Batch Analyte ug/l ug/l date / time TPH (GC/FID) Low Fraction 474 J3 100 1 04/07/2025 16:36 WG2484821 (S) a,a,a-Trifluorotoluene(FID)94.8 78.0-120 04/07/2025 16:36 WG2484821 Volatile Organic Compounds (GC/MS) by Method 8260D Result Qualifier RDL Dilution Analysis Batch Analyte ug/l ug/l date / time Benzene ND 1.00 1 04/06/2025 03:23 WG2483992 Toluene ND 1.00 1 04/06/2025 03:23 WG2483992 Ethylbenzene ND 1.00 1 04/06/2025 03:23 WG2483992 Total Xylenes ND 3.00 1 04/06/2025 03:23 WG2483992 Methyl tert-butyl ether ND 1.00 1 04/06/2025 03:23 WG2483992 Naphthalene ND 5.00 1 04/06/2025 03:23 WG2483992 (S) Toluene-d8 105 80.0-120 04/06/2025 03:23 WG2483992 (S) 4-Bromofluorobenzene 103 77.0-126 04/06/2025 03:23 WG2483992 (S) 1,2-Dichloroethane-d4 90.6 70.0-130 04/06/2025 03:23 WG2483992 Semi-Volatile Organic Compounds (GC) by Method 8015D Result Qualifier RDL Dilution Analysis Batch Analyte ug/l ug/l date / time TPH (GC/FID) High Fraction 5390 100 1 04/04/2025 06:16 WG2482095 (S) o-Terphenyl 101 52.0-156 04/04/2025 06:16 WG2482095 1 Cp 2 Tc 3 Ss 4 Cn 5 Sr 6 Qc 7 Gl 8 Al 9 Sc ACCOUNT:PROJECT:SDG:DATE/TIME:PAGE: Broadbent & Associates - UT Pilot 746-605-13 L1841974 04/08/25 08:04 7 of 19 ACCOUNT:PROJECT:SDG:DATE/TIME:PAGE: Broadbent & Associates - UT Pilot 746-605-13 L1841974 04/08/25 08:31 7 of 19 SAMPLE RESULTS - 03 L1841974 MW-3 Collected date/time: 03/28/25 17:00 Volatile Organic Compounds (GC) by Method 8015D/GRO Result Qualifier RDL Dilution Analysis Batch Analyte ug/l ug/l date / time TPH (GC/FID) Low Fraction ND 100 1 04/06/2025 19:56 WG2484334 (S) a,a,a-Trifluorotoluene(FID)98.6 78.0-120 04/06/2025 19:56 WG2484334 Volatile Organic Compounds (GC/MS) by Method 8260D Result Qualifier RDL Dilution Analysis Batch Analyte ug/l ug/l date / time Benzene ND 1.00 1 04/06/2025 03:43 WG2483992 Toluene ND 1.00 1 04/06/2025 03:43 WG2483992 Ethylbenzene ND 1.00 1 04/06/2025 03:43 WG2483992 Total Xylenes ND 3.00 1 04/06/2025 03:43 WG2483992 Methyl tert-butyl ether 1.01 1.00 1 04/06/2025 03:43 WG2483992 Naphthalene ND 5.00 1 04/06/2025 03:43 WG2483992 (S) Toluene-d8 106 80.0-120 04/06/2025 03:43 WG2483992 (S) 4-Bromofluorobenzene 99.3 77.0-126 04/06/2025 03:43 WG2483992 (S) 1,2-Dichloroethane-d4 92.1 70.0-130 04/06/2025 03:43 WG2483992 Semi-Volatile Organic Compounds (GC) by Method 8015D Result Qualifier RDL Dilution Analysis Batch Analyte ug/l ug/l date / time TPH (GC/FID) High Fraction 1210 100 1 04/04/2025 06:36 WG2482095 (S) o-Terphenyl 86.8 52.0-156 04/04/2025 06:36 WG2482095 1 Cp 2 Tc 3 Ss 4 Cn 5 Sr 6 Qc 7 Gl 8 Al 9 Sc ACCOUNT:PROJECT:SDG:DATE/TIME:PAGE: Broadbent & Associates - UT Pilot 746-605-13 L1841974 04/08/25 08:04 8 of 19 ACCOUNT:PROJECT:SDG:DATE/TIME:PAGE: Broadbent & Associates - UT Pilot 746-605-13 L1841974 04/08/25 08:31 8 of 19 SAMPLE RESULTS - 04 L1841974 MW-4 Collected date/time: 03/28/25 14:45 Volatile Organic Compounds (GC) by Method 8015D/GRO Result Qualifier RDL Dilution Analysis Batch Analyte ug/l ug/l date / time TPH (GC/FID) Low Fraction ND 100 1 04/06/2025 20:17 WG2484334 (S) a,a,a-Trifluorotoluene(FID)99.3 78.0-120 04/06/2025 20:17 WG2484334 Volatile Organic Compounds (GC/MS) by Method 8260D Result Qualifier RDL Dilution Analysis Batch Analyte ug/l ug/l date / time Benzene ND 1.00 1 04/06/2025 04:03 WG2483992 Toluene ND 1.00 1 04/06/2025 04:03 WG2483992 Ethylbenzene ND 1.00 1 04/06/2025 04:03 WG2483992 Total Xylenes ND 3.00 1 04/06/2025 04:03 WG2483992 Methyl tert-butyl ether ND 1.00 1 04/06/2025 04:03 WG2483992 Naphthalene ND 5.00 1 04/06/2025 04:03 WG2483992 (S) Toluene-d8 107 80.0-120 04/06/2025 04:03 WG2483992 (S) 4-Bromofluorobenzene 100 77.0-126 04/06/2025 04:03 WG2483992 (S) 1,2-Dichloroethane-d4 91.4 70.0-130 04/06/2025 04:03 WG2483992 Semi-Volatile Organic Compounds (GC) by Method 8015D Result Qualifier RDL Dilution Analysis Batch Analyte ug/l ug/l date / time TPH (GC/FID) High Fraction 1200 100 1 04/04/2025 06:55 WG2482095 (S) o-Terphenyl 83.2 52.0-156 04/04/2025 06:55 WG2482095 1 Cp 2 Tc 3 Ss 4 Cn 5 Sr 6 Qc 7 Gl 8 Al 9 Sc ACCOUNT:PROJECT:SDG:DATE/TIME:PAGE: Broadbent & Associates - UT Pilot 746-605-13 L1841974 04/08/25 08:04 9 of 19 ACCOUNT:PROJECT:SDG:DATE/TIME:PAGE: Broadbent & Associates - UT Pilot 746-605-13 L1841974 04/08/25 08:31 9 of 19 SAMPLE RESULTS - 05 L1841974 MW-5A Collected date/time: 03/30/25 10:00 Volatile Organic Compounds (GC) by Method 8015D/GRO Result Qualifier RDL Dilution Analysis Batch Analyte ug/l ug/l date / time TPH (GC/FID) Low Fraction ND 100 1 04/06/2025 20:38 WG2484334 (S) a,a,a-Trifluorotoluene(FID)99.0 78.0-120 04/06/2025 20:38 WG2484334 Volatile Organic Compounds (GC/MS) by Method 8260D Result Qualifier RDL Dilution Analysis Batch Analyte ug/l ug/l date / time Benzene ND 1.00 1 04/06/2025 04:23 WG2483992 Toluene ND 1.00 1 04/06/2025 04:23 WG2483992 Ethylbenzene ND 1.00 1 04/06/2025 04:23 WG2483992 Total Xylenes ND 3.00 1 04/06/2025 04:23 WG2483992 Methyl tert-butyl ether ND 1.00 1 04/06/2025 04:23 WG2483992 Naphthalene ND 5.00 1 04/06/2025 04:23 WG2483992 (S) Toluene-d8 107 80.0-120 04/06/2025 04:23 WG2483992 (S) 4-Bromofluorobenzene 100 77.0-126 04/06/2025 04:23 WG2483992 (S) 1,2-Dichloroethane-d4 91.1 70.0-130 04/06/2025 04:23 WG2483992 Semi-Volatile Organic Compounds (GC) by Method 8015D Result Qualifier RDL Dilution Analysis Batch Analyte ug/l ug/l date / time TPH (GC/FID) High Fraction 1450 100 1 04/04/2025 13:17 WG2482095 (S) o-Terphenyl 80.0 52.0-156 04/04/2025 13:17 WG2482095 1 Cp 2 Tc 3 Ss 4 Cn 5 Sr 6 Qc 7 Gl 8 Al 9 Sc ACCOUNT:PROJECT:SDG:DATE/TIME:PAGE: Broadbent & Associates - UT Pilot 746-605-13 L1841974 04/08/25 08:04 10 of 19 ACCOUNT:PROJECT:SDG:DATE/TIME:PAGE: Broadbent & Associates - UT Pilot 746-605-13 L1841974 04/08/25 08:31 10 of 19 SAMPLE RESULTS - 06 L1841974 MW-13 Collected date/time: 03/30/25 10:40 Volatile Organic Compounds (GC) by Method 8015D/GRO Result Qualifier RDL Dilution Analysis Batch Analyte ug/l ug/l date / time TPH (GC/FID) Low Fraction 104 100 1 04/06/2025 20:59 WG2484334 (S) a,a,a-Trifluorotoluene(FID)99.7 78.0-120 04/06/2025 20:59 WG2484334 Volatile Organic Compounds (GC/MS) by Method 8260D Result Qualifier RDL Dilution Analysis Batch Analyte ug/l ug/l date / time Benzene ND 1.00 1 04/06/2025 04:43 WG2483992 Toluene ND 1.00 1 04/06/2025 04:43 WG2483992 Ethylbenzene ND 1.00 1 04/06/2025 04:43 WG2483992 Total Xylenes ND 3.00 1 04/06/2025 04:43 WG2483992 Methyl tert-butyl ether ND 1.00 1 04/06/2025 04:43 WG2483992 Naphthalene ND 5.00 1 04/06/2025 04:43 WG2483992 (S) Toluene-d8 104 80.0-120 04/06/2025 04:43 WG2483992 (S) 4-Bromofluorobenzene 101 77.0-126 04/06/2025 04:43 WG2483992 (S) 1,2-Dichloroethane-d4 90.3 70.0-130 04/06/2025 04:43 WG2483992 Semi-Volatile Organic Compounds (GC) by Method 8015D Result Qualifier RDL Dilution Analysis Batch Analyte ug/l ug/l date / time TPH (GC/FID) High Fraction 3330 100 1 04/04/2025 11:16 WG2482095 (S) o-Terphenyl 87.4 52.0-156 04/04/2025 11:16 WG2482095 1 Cp 2 Tc 3 Ss 4 Cn 5 Sr 6 Qc 7 Gl 8 Al 9 Sc ACCOUNT:PROJECT:SDG:DATE/TIME:PAGE: Broadbent & Associates - UT Pilot 746-605-13 L1841974 04/08/25 08:04 11 of 19 ACCOUNT:PROJECT:SDG:DATE/TIME:PAGE: Broadbent & Associates - UT Pilot 746-605-13 L1841974 04/08/25 08:31 11 of 19 SAMPLE RESULTS - 07 L1841974 MW-14 Collected date/time: 03/30/25 11:25 Volatile Organic Compounds (GC) by Method 8015D/GRO Result Qualifier RDL Dilution Analysis Batch Analyte ug/l ug/l date / time TPH (GC/FID) Low Fraction ND 100 1 04/06/2025 21:20 WG2484334 (S) a,a,a-Trifluorotoluene(FID)97.1 78.0-120 04/06/2025 21:20 WG2484334 Volatile Organic Compounds (GC/MS) by Method 8260D Result Qualifier RDL Dilution Analysis Batch Analyte ug/l ug/l date / time Benzene ND 1.00 1 04/06/2025 05:03 WG2483992 Toluene ND 1.00 1 04/06/2025 05:03 WG2483992 Ethylbenzene ND 1.00 1 04/06/2025 05:03 WG2483992 Total Xylenes ND 3.00 1 04/06/2025 05:03 WG2483992 Methyl tert-butyl ether 10.9 1.00 1 04/06/2025 05:03 WG2483992 Naphthalene ND 5.00 1 04/06/2025 05:03 WG2483992 (S) Toluene-d8 106 80.0-120 04/06/2025 05:03 WG2483992 (S) 4-Bromofluorobenzene 101 77.0-126 04/06/2025 05:03 WG2483992 (S) 1,2-Dichloroethane-d4 90.6 70.0-130 04/06/2025 05:03 WG2483992 Semi-Volatile Organic Compounds (GC) by Method 8015D Result Qualifier RDL Dilution Analysis Batch Analyte ug/l ug/l date / time TPH (GC/FID) High Fraction 442 100 1 04/04/2025 11:36 WG2482095 (S) o-Terphenyl 84.2 52.0-156 04/04/2025 11:36 WG2482095 1 Cp 2 Tc 3 Ss 4 Cn 5 Sr 6 Qc 7 Gl 8 Al 9 Sc ACCOUNT:PROJECT:SDG:DATE/TIME:PAGE: Broadbent & Associates - UT Pilot 746-605-13 L1841974 04/08/25 08:04 12 of 19 ACCOUNT:PROJECT:SDG:DATE/TIME:PAGE: Broadbent & Associates - UT Pilot 746-605-13 L1841974 04/08/25 08:31 12 of 19 QUALITY CONTROL SUMMARYWG2484334 Volatile Organic Compounds (GC) by Method 8015D/GRO L1841974-03,04,05,06,07 Method Blank (MB) (MB) R4196238-3 04/06/25 18:25 MB Result MB Qualifier MB MDL MB RDL Analyte ug/l ug/l ug/l TPH (GC/FID) Low Fraction U 31.4 100 (S) a,a,a-Trifluorotoluene(FID)99.2 78.0-120 Laboratory Control Sample (LCS) • Laboratory Control Sample Duplicate (LCSD) (LCS) R4196238-1 04/06/25 16:46 • (LCSD) R4196238-2 04/06/25 17:08 Spike Amount LCS Result LCSD Result LCS Rec.LCSD Rec.Rec. Limits LCS Qualifier LCSD Qualifier RPD RPD Limits Analyte ug/l ug/l ug/l %%%%% TPH (GC/FID) Low Fraction 5000 4830 4700 96.6 94.0 72.0-127 2.73 20 (S) a,a,a-Trifluorotoluene(FID) 106 109 78.0-120 1 Cp 2 Tc 3 Ss 4 Cn 5 Sr 6 Qc 7 Gl 8 Al 9 Sc ACCOUNT:PROJECT:SDG:DATE/TIME:PAGE: Broadbent & Associates - UT Pilot 746-605-13 L1841974 04/08/25 08:04 13 of 19 ACCOUNT:PROJECT:SDG:DATE/TIME:PAGE: Broadbent & Associates - UT Pilot 746-605-13 L1841974 04/08/25 08:31 13 of 19 QUALITY CONTROL SUMMARYWG2484821 Volatile Organic Compounds (GC) by Method 8015D/GRO L1841974-01,02 Method Blank (MB) (MB) R4196324-3 04/07/25 13:07 MB Result MB Qualifier MB MDL MB RDL Analyte ug/l ug/l ug/l TPH (GC/FID) Low Fraction 36.5 J 31.4 100 (S) a,a,a-Trifluorotoluene(FID)95.3 78.0-120 Laboratory Control Sample (LCS) • Laboratory Control Sample Duplicate (LCSD) (LCS) R4196324-1 04/07/25 12:02 • (LCSD) R4196324-2 04/07/25 12:24 Spike Amount LCS Result LCSD Result LCS Rec.LCSD Rec.Rec. Limits LCS Qualifier LCSD Qualifier RPD RPD Limits Analyte ug/l ug/l ug/l %%%%% TPH (GC/FID) Low Fraction 5000 6150 4740 123 94.8 72.0-127 J3 25.9 20 (S) a,a,a-Trifluorotoluene(FID) 105 103 78.0-120 1 Cp 2 Tc 3 Ss 4 Cn 5 Sr 6 Qc 7 Gl 8 Al 9 Sc ACCOUNT:PROJECT:SDG:DATE/TIME:PAGE: Broadbent & Associates - UT Pilot 746-605-13 L1841974 04/08/25 08:04 14 of 19 ACCOUNT:PROJECT:SDG:DATE/TIME:PAGE: Broadbent & Associates - UT Pilot 746-605-13 L1841974 04/08/25 08:31 14 of 19 QUALITY CONTROL SUMMARYWG2483992 Volatile Organic Compounds (GC/MS) by Method 8260D L1841974-01,02,03,04,05,06,07 Method Blank (MB) (MB) R4196008-3 04/06/25 00:18 MB Result MB Qualifier MB MDL MB RDL Analyte ug/l ug/l ug/l Benzene U 0.0941 1.00 Toluene U 0.278 1.00 Ethylbenzene U 0.137 1.00 Total Xylenes U 0.174 3.00 Methyl tert-butyl ether U 0.101 1.00 Naphthalene U 1.00 5.00 (S) Toluene-d8 106 80.0-120 (S) 4-Bromofluorobenzene 100 77.0-126 (S) 1,2-Dichloroethane-d4 90.3 70.0-130 Laboratory Control Sample (LCS) • Laboratory Control Sample Duplicate (LCSD) (LCS) R4196008-1 04/05/25 23:18 • (LCSD) R4196008-2 04/05/25 23:38 Spike Amount LCS Result LCSD Result LCS Rec.LCSD Rec.Rec. Limits LCS Qualifier LCSD Qualifier RPD RPD Limits Analyte ug/l ug/l ug/l %%%%% Benzene 5.00 4.24 4.01 84.8 80.2 70.0-123 5.58 20 Toluene 5.00 4.52 4.24 90.4 84.8 79.0-120 6.39 20 Ethylbenzene 5.00 4.51 4.34 90.2 86.8 79.0-123 3.84 20 Total Xylenes 15.0 13.6 12.9 90.7 86.0 79.0-123 5.28 20 Methyl tert-butyl ether 5.00 4.24 4.07 84.8 81.4 68.0-125 4.09 20 Naphthalene 5.00 4.34 4.43 86.8 88.6 54.0-135 2.05 20 (S) Toluene-d8 105 105 80.0-120 (S) 4-Bromofluorobenzene 99.7 99.4 77.0-126 (S) 1,2-Dichloroethane-d4 93.8 92.6 70.0-130 1 Cp 2 Tc 3 Ss 4 Cn 5 Sr 6 Qc 7 Gl 8 Al 9 Sc ACCOUNT:PROJECT:SDG:DATE/TIME:PAGE: Broadbent & Associates - UT Pilot 746-605-13 L1841974 04/08/25 08:04 15 of 19 ACCOUNT:PROJECT:SDG:DATE/TIME:PAGE: Broadbent & Associates - UT Pilot 746-605-13 L1841974 04/08/25 08:31 15 of 19 QUALITY CONTROL SUMMARYWG2482095 Semi-Volatile Organic Compounds (GC) by Method 8015D L1841974-01,02,03,04,05,06,07 Method Blank (MB) (MB) R4194941-1 04/03/25 18:39 MB Result MB Qualifier MB MDL MB RDL Analyte ug/l ug/l ug/l TPH (GC/FID) High Fraction U 60.5 100 (S) o-Terphenyl 80.5 52.0-156 Laboratory Control Sample (LCS) • Laboratory Control Sample Duplicate (LCSD) (LCS) R4194941-2 04/03/25 18:58 • (LCSD) R4194941-3 04/03/25 19:18 Spike Amount LCS Result LCSD Result LCS Rec.LCSD Rec.Rec. Limits LCS Qualifier LCSD Qualifier RPD RPD Limits Analyte ug/l ug/l ug/l %%%%% TPH (GC/FID) High Fraction 1500 1610 1610 107 107 50.0-150 0.000 20 (S) o-Terphenyl 89.0 87.0 52.0-156 1 Cp 2 Tc 3 Ss 4 Cn 5 Sr 6 Qc 7 Gl 8 Al 9 Sc ACCOUNT:PROJECT:SDG:DATE/TIME:PAGE: Broadbent & Associates - UT Pilot 746-605-13 L1841974 04/08/25 08:04 16 of 19 ACCOUNT:PROJECT:SDG:DATE/TIME:PAGE: Broadbent & Associates - UT Pilot 746-605-13 L1841974 04/08/25 08:31 16 of 19 GLOSSARY OF TERMS Guide to Reading and Understanding Your Laboratory Report The information below is designed to better explain the various terms used in your report of analytical results from the Laboratory. This is not intended as a comprehensive explanation, and if you have additional questions please contact your project representative. Results Disclaimer - Information that may be provided by the customer, and contained within this report, include Permit Limits, Project Name, Sample ID, Sample Matrix, Sample Preservation, Field Blanks, Field Spikes, Field Duplicates, On-Site Data, Sampling Collection Dates/Times, and Sampling Location. Results relate to the accuracy of this information provided, and as the samples are received. Abbreviations and Definitions MDL Method Detection Limit. ND Not detected at the Reporting Limit (or MDL where applicable). RDL Reported Detection Limit. Rec.Recovery. RPD Relative Percent Difference. SDG Sample Delivery Group. (S) Surrogate (Surrogate Standard) - Analytes added to every blank, sample, Laboratory Control Sample/Duplicate and Matrix Spike/Duplicate; used to evaluate analytical efficiency by measuring recovery. Surrogates are not expected to be detected in all environmental media. U Not detected at the Reporting Limit (or MDL where applicable). Analyte The name of the particular compound or analysis performed. Some Analyses and Methods will have multiple analytes reported. Dilution If the sample matrix contains an interfering material, the sample preparation volume or weight values differ from the standard, or if concentrations of analytes in the sample are higher than the highest limit of concentration that the laboratory can accurately report, the sample may be diluted for analysis. If a value different than 1 is used in this field, the result reported has already been corrected for this factor. Limits These are the target % recovery ranges or % difference value that the laboratory has historically determined as normal for the method and analyte being reported. Successful QC Sample analysis will target all analytes recovered or duplicated within these ranges. Qualifier This column provides a letter and/or number designation that corresponds to additional information concerning the result reported. If a Qualifier is present, a definition per Qualifier is provided within the Glossary and Definitions page and potentially a discussion of possible implications of the Qualifier in the Case Narrative if applicable. Result The actual analytical final result (corrected for any sample specific characteristics) reported for your sample. If there was no measurable result returned for a specific analyte, the result in this column may state “ND” (Not Detected) or “BDL” (Below Detectable Levels). The information in the results column should always be accompanied by either an MDL (Method Detection Limit) or RDL (Reporting Detection Limit) that defines the lowest value that the laboratory could detect or report for this analyte. Uncertainty (Radiochemistry)Confidence level of 2 sigma. Case Narrative (Cn) A brief discussion about the included sample results, including a discussion of any non-conformances to protocol observed either at sample receipt by the laboratory from the field or during the analytical process. If present, there will be a section in the Case Narrative to discuss the meaning of any data qualifiers used in the report. Quality Control Summary (Qc) This section of the report includes the results of the laboratory quality control analyses required by procedure or analytical methods to assist in evaluating the validity of the results reported for your samples. These analyses are not being performed on your samples typically, but on laboratory generated material. Sample Chain of Custody (Sc) This is the document created in the field when your samples were initially collected. This is used to verify the time and date of collection, the person collecting the samples, and the analyses that the laboratory is requested to perform. This chain of custody also documents all persons (excluding commercial shippers) that have had control or possession of the samples from the time of collection until delivery to the laboratory for analysis. Sample Results (Sr) This section of your report will provide the results of all testing performed on your samples. These results are provided by sample ID and are separated by the analyses performed on each sample. The header line of each analysis section for each sample will provide the name and method number for the analysis reported. Sample Summary (Ss)This section of the Analytical Report defines the specific analyses performed for each sample ID, including the dates and times of preparation and/or analysis. Qualifier Description J The identification of the analyte is acceptable; the reported value is an estimate. J3 The associated batch QC was outside the established quality control range for precision. 1 Cp 2 Tc 3 Ss 4 Cn 5 Sr 6 Qc 7 Gl 8 Al 9 Sc ACCOUNT:PROJECT:SDG:DATE/TIME:PAGE: Broadbent & Associates - UT Pilot 746-605-13 L1841974 04/08/25 08:04 17 of 19 ACCOUNT:PROJECT:SDG:DATE/TIME:PAGE: Broadbent & Associates - UT Pilot 746-605-13 L1841974 04/08/25 08:31 17 of 19 Pace Analytical National 12065 Lebanon Rd Mount Juliet, TN 37122 Alabama 40660 Nebraska NE-OS-15-05 Alaska 17-026 Nevada TN000032021-1 Arizona AZ0612 New Hampshire 2975 Arkansas 88-0469 New Jersey–NELAP TN002 California 2932 New Mexico ¹TN00003 Colorado TN00003 New York 11742 Connecticut PH-0197 North Carolina Env375 Florida E87487 North Carolina ¹DW21704 Georgia NELAP North Carolina ³41 Georgia ¹923 North Dakota R-140 Idaho TN00003 Ohio–VAP CL0069 Illinois 200008 Oklahoma 9915 Indiana C-TN-01 Oregon TN200002 Iowa 364 Pennsylvania 68-02979 Kansas E-10277 Rhode Island LAO00356 Kentucky ¹ ⁶KY90010 South Carolina 84004002 Kentucky ²16 South Dakota n/a Louisiana AI30792 Tennessee ¹ ⁴2006 Louisiana LA018 Texas T104704245-20-18 Maine TN00003 Texas ⁵LAB0152 Maryland 324 Utah TN000032021-11 Massachusetts M-TN003 Vermont VT2006 Michigan 9958 Virginia 110033 Minnesota 047-999-395 Washington C847 Mississippi TN00003 West Virginia 233 Missouri 340 Wisconsin 998093910 Montana CERT0086 Wyoming A2LA A2LA – ISO 17025 1461.01 AIHA-LAP,LLC EMLAP 100789 A2LA – ISO 17025 ⁵1461.02 DOD 1461.01 Canada 1461.01 USDA P330-15-00234 EPA–Crypto TN00003 ACCREDITATIONS & LOCATIONS ¹ Drinking Water ² Underground Storage Tanks ³ Aquatic Toxicity ⁴ Chemical/Microbiological ⁵ Mold ⁶ Wastewater n/a Accreditation not applicable * Not all certifications held by the laboratory are applicable to the results reported in the attached report. * Accreditation is only applicable to the test methods specified on each scope of accreditation held by Pace Analytical. 1 Cp 2 Tc 3 Ss 4 Cn 5 Sr 6 Qc 7 Gl 8 Al 9 Sc ACCOUNT:PROJECT:SDG:DATE/TIME:PAGE: Broadbent & Associates - UT Pilot 746-605-13 L1841974 04/08/25 08:04 18 of 19 ACCOUNT:PROJECT:SDG:DATE/TIME:PAGE: Broadbent & Associates - UT Pilot 746-605-13 L1841974 04/08/25 08:31 18 of 19