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Home My WebLink AboutDERR-2024-012666GROUNDWATER MONITORING REPORT SEPTEMBER 2024 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, LUX, and OFS 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. 186 E. Main St. #99 Sandy, Utah 84070 (801)505-9251 October 25, 2024 Project No. 20-14-104 GROUNDWATER MONITORING REPORT, SEPTEMBER 2024 EVENT FLYING J TRAVEL CENTER #746 SALT LAKE CITY, UTAH Broadbent & Associates, Inc. (Broadbent) is pleased to present this Groundwater Monitoring Report, September 2024 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. Groundwater monitoring and sampling were conducted to assist with the evaluation of Site conditions associated with a dissolved phase petroleum hydrocarbon plume due to historic releases. The September 9, 2024 groundwater monitoring and sampling was performed by Sarah Hamilton (GS #1869). Details of work performed, 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, LUX, and OFS Current phase of project: 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 (January 2024 to September 2024): 1. Conducted groundwater monitoring and sampling on September 9, 2024. WORK SCHEDULED FOR NEXT PERIOD (September 2024 to March 2026): 1. Prepare and submit the Groundwater Monitoring Report, September 2024, Sampling Event (contained herein). 2. Conduct annual groundwater monitoring and sampling in March 2026. ANNUAL MONITORING PLAN SUMMARY: Groundwater level gauging: MW-1 through MW-4 and MW-7 through MW-12 (annual) Groundwater sample collection: MW-1 through MW-4 and MW-7 through MW-12 (annual) 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: 7.47 (MW-12) to 9.47 (MW-2) (ft below TOC) Gradient direction: MW-1 through MW-4: Southwest MW-7 through MW-12: Northwest (compass direction) Gradient magnitude: 0.001 (ft/ft) Average change in elevation: 0.22 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 wells (reported below). Broadbent & Associates, Inc. Groundwater Monitoring Report, September 2024 Event Salt Lake City, Utah Flying J Travel Center #746/Salt Lake City, Utah October 25, 2024 Page 2 ACTIVITIES CONDUCTED & RESULTS: Groundwater monitoring and sampling activities were conducted on September 9, 2024, by Sarah Hamilton, certified sampler GS-1869. The event followed the previous annual event conducted in June 2023. Monitoring wells MW-1 through MW-4, and MW-7 through MW-12 were gauged to measure depth to water and depth to LNAPL, if present. Well MW-5 appears to be blocked by roots or other obstruction at about 9 feet bgs, which prevented gauging and sampling. No other irregularities were reported during gauging activities. Depth to groundwater ranged from 7.47 feet (MW-12) to 9.47 feet (MW-2). LNAPL was not detected in the groundwater monitoring wells during the monitoring event. Groundwater flow is generally to the northwest at MW-1 through MW-4 and to the southwest at MW-7 through MW-12, with an average calculated magnitude of 0.001 ft/ft. Groundwater elevation increased approximately 0.22 feet across the Site since the previous event in June 2023. Broadbent’s groundwater monitoring and sampling field procedures are provided in Appendix A. Groundwater monitoring field data sheets are provided in Appendix B. Current and historical groundwater elevation data are presented in Table 1. A groundwater potentiometric surface map is attached as Figure 3. Groundwater samples were collected from monitoring wells MW-1 through MW-4 and MW-7 through MW-12 on September 9, 2024. 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 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 by EPA Method 3511/8015. No significant irregularities were reported by the laboratory. A groundwater analytical map is attached as Figure 4. Laboratory analytical results are summarized in Table 1. The laboratory report and chain-of-custody documentation are attached as Appendix C. Analytical results yield the following notable observations: • Benzene was detected in three (3) of the 10 groundwater samples with the detected concentration exceeding the UDEQ ISL of 5 µg/L (MW-1, 50.0 µg/L). • TPH-DRO was detected in four (4) of the 10 groundwater samples with one (1) sample exceeding the UDEQ ISL of 1,000 µg/L (MW-2, 1,560 µg/L). DISCUSSION: Based on the results of the groundwater monitoring and sampling conducted in September 2024, benzene exceeds the UDEQ ISL in monitoring well MW-1 and was detected at a similar concentration as the June 2023 event. TPH-DRO concentrations exceed the UDEQ ISL in monitoring well MW-2 and was detected at a slightly lower concentration as the June 2023 event. The groundwater gradient at the Site is toward the northwest and southwest with a flow magnitude of 0.001 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: Broadbent is recommending a slight modification to the standard monitoring schedule with conduct of the following: Timeframe Wells Fourth Quarter 2024 MW-7 through MW-12 only First Quarter 2025 MW-1 through MW-5 and MW- 7 through MW-12 Broadbent & Associates, Inc. Groundwater Monitoring Report, September 2024 Event Salt Lake City, Utah Flying J Travel Center #746/Salt Lake City, Utah October 25, 2024 Page 3 Results of First Quarter 2025 sampling will be evaluated to determine if well abandonment may be an option for monitor wells MW-7 through MW-12 associated with Release OFS. Residual mass associated with Releases FTX and LUX (monitor wells MW-1 through MW-5) will be evaluated to determine if additional action is warranted with these releases. 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. REFERENCES: Broadbent & Associates, Inc. 2023. Annual Groundwater Monitoring Report, December 2022 Event, Flying J Travel Center #746, January 24. Utah Department of Environmental Quality, 2005. Initial Screening Levels. November 5. Broadbent & Associates, Inc. Groundwater Monitoring Report, September 2024 Event Salt Lake City, Utah Flying J Travel Center #746/Salt Lake City, Utah October 25, 2024 Page 4 ATTACHMENTS: Figure 1 Site Location Map Figure 2 Site Layout Map Figure 3 Potentiometric Surface Map (9/9/24) Figure 4 Groundwater Analytical Map (9/9/24) Table 1 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 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 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 Site Layout 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: 10/23/24 2 0 SCALE: 1 inch = 80 feet 80 160 LEGEND Property Boundary (approximate) Monitoring Well LocationMW-2 4226.80 4226.82 4227.00 Well Blocked 4226.85 MW-3 MW-2 MW-5 MW-1 MW-7MW-8 MW-10 MW-12 MW-9 4226.50 4226.71 4226.59 4226.51 4226.71 4226.98 MW-11MW-11 MW-4 MW-3 MW-2 MW-5 MW-1 422 6 . 6 0 422 6 . 7 0 4 2 2 6 . 8 0 422 6 . 8 0 4 2 2 6 . 9 0 4226 . 9 0 MW-11 Potentiometric Surface Map (9/9/24) 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: 10/23/24 3 0 SCALE: 1 inch = 80 feet 80 160 LEGEND Property Boundary (approximate) MW-2 Monitoring Well Location and Groundwater Elevation (feet) Groundwater Elevation Contour 4226.9 0 Groundwater Flow Direction 4227.00 Not Sampled B=50.0 T=1.51 E=4.40 X=4.58 N=8.13 TPH-D=426 B=1.44 T<1.00 E<1.00 X=3.07 N<5.00 TPH-D=1,560 B<1.00 T<1.00 E<1.00 X<3.00 N<5.00 TPH-D<100 B<1.00 T<1.00 E<1.00 X<3.00 N<5.00 TPH-D=101 B<1.00 T<1.00 E<1.00 X<3.00 N<5.00 TPH-D<100 B=1.21 T<1.00 E<1.00 X<3.00 N<5.00 TPH-D<100 B<1.00 T<1.00 E<1.00 X<3.00 N<5.00 TPH-D<100 B<1.00 T<1.00 E<1.00 X<3.00 N<5.00 TPH-D<100 B<1.00 T<1.00 E<1.00 X<3.00 N<5.00 TPH-D=135 B<1.00 T<1.00 E<1.00 X<3.00 N<5.00 TPH-D<100 MW-7MW-8 MW-10 MW-12 MW-9 MW-4 MW-3 MW-2 MW-5 MW-1 MW-11 Groundwater Analytical Map (9/9/24) 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: 10/23/24 4 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 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 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 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 Date Depth to Groundwater (feet btoc) Concentrations (µg/L) MW-1 MW-2 RBCA Tier 1 SL Well No. Relative Groundwater Elevation (feet) Absolute Groundwater Elevation (feet) UDEQ ISL TABLE 1 Groundwater Monitoring and Analytical Results Flying J Travel Center No. 746 2025 South 900 West, Salt Lake City, Salt Lake County, Utah MW-3 Broadbent 746 Analytical Tables 9-4-24 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 Date Depth to Groundwater (feet btoc) Concentrations (µg/L) MW-1 RBCA Tier 1 SL Well No. Relative Groundwater Elevation (feet) Absolute Groundwater Elevation (feet) UDEQ ISL TABLE 1 Groundwater Monitoring and Analytical Results Flying J Travel Center No. 746 2025 South 900 West, Salt Lake City, Salt Lake County, Utah 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 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 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 93.25MW-6 Not sampled or gauged: Roots blocking well at ~9.0 ft BTOC MW-4 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 was destroyed during DEF install June 2011 Not sampled or gauged: Roots blocking well MW-5 Not sampled or gauged: Roots blocking well Not sampled or gauged: Roots blocking well at ~8.5 ft BTOC Broadbent 746 Analytical Tables 9-4-24 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 Date Depth to Groundwater (feet btoc) Concentrations (µg/L) MW-1 RBCA Tier 1 SL Well No. Relative Groundwater Elevation (feet) Absolute Groundwater Elevation (feet) UDEQ ISL TABLE 1 Groundwater Monitoring and Analytical Results Flying J Travel Center No. 746 2025 South 900 West, Salt Lake City, Salt Lake County, Utah 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 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-6 17 6.5 to 16.5 100.00 NA J = value is between laboratory minimum detection limit and reporting limit MW-7 15 5 to 15 NA 4235.48 B = analyte detected in laboratory method blank MW-8 15 5 to 15 NA 4234.76 NA = not applicable MW-9 15 5 to 15 NA 4235.31 NM = not measured MW-10 15 5 to 15 NA 4234.48 bold = sample result exceeds RBCA Tier 1 SL and/or UDEQ ISLs MW-11 15 5 to 15 NA 4234.03 Data reported prior to June 2021 was collected by ATC Group Services (ATC)MW-12 15 5 to 15 NA 4233.97 **wells resurveyed in 2024 from relative elevation to absolute elevation * 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 MW-9 MW-10 MW-11 Relative Top of Casing Elevation (feet) Well No. MW-12 MW-7 MW-8 Total Well Depth (feet bgs) Screened Interval (feet) Absolute Top of Casing Elevation (feet) Broadbent 746 Analytical Tables 9-4-24 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 APPENDIX C LABORATORY REPORT AND CHAIN-OF-CUSTODY DOCUMENTATION ANALYTICAL REPORT September 20, 2024 Broadbent & Associates - UT Pilot Sample Delivery Group:L1776133 Samples Received:09/11/2024 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: September 20, 2024 [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 L1776133 09/20/24 22:20 1 of 22 September 21, 2024 Jeff Carr Project Manager ACCOUNT:PROJECT:SDG:DATE/TIME:PAGE: Broadbent & Associates - UT Pilot 746-605-13 L1776133 09/21/24 07:14 1 of 22 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 L1776133-01 6 MW-2 L1776133-02 7 MW-3 L1776133-03 8 MW-4 L1776133-04 9 MW-7 L1776133-05 10 MW-8 L1776133-06 11 MW-9 L1776133-07 12 MW-10 L1776133-08 13 MW-11 L1776133-09 14 MW-12 L1776133-10 15 TRIP BLANK L1776133-11 16 Qc: Quality Control Summary 17 Volatile Organic Compounds (GC/MS) by Method 8260B 17 Semi-Volatile Organic Compounds (GC) by Method 3511/8015 18 Gl: Glossary of Terms 19 Al: Accreditations & Locations 20 Sc: Sample Chain of Custody 21 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 L1776133 09/20/24 22:20 2 of 22 ACCOUNT:PROJECT:SDG:DATE/TIME:PAGE: Broadbent & Associates - UT Pilot 746-605-13 L1776133 09/21/24 07:14 2 of 22 SAMPLE SUMMARY Collected by Collected date/time Received date/time MW-1 L1776133-01 GW 09/09/24 12:10 09/11/24 08:00 Method Batch Dilution Preparation Analysis Analyst Location date/time date/time Volatile Organic Compounds (GC/MS) by Method 8260B WG2362466 1 09/16/24 13:58 09/16/24 13:58 DYW Mt. Juliet, TN Semi-Volatile Organic Compounds (GC) by Method 3511/8015 WG2365435 1 09/19/24 08:17 09/19/24 18:35 DMG Mt. Juliet, TN Collected by Collected date/time Received date/time MW-2 L1776133-02 GW 09/09/24 11:40 09/11/24 08:00 Method Batch Dilution Preparation Analysis Analyst Location date/time date/time Volatile Organic Compounds (GC/MS) by Method 8260B WG2362466 1 09/16/24 14:19 09/16/24 14:19 DYW Mt. Juliet, TN Semi-Volatile Organic Compounds (GC) by Method 3511/8015 WG2365435 1 09/19/24 08:17 09/19/24 18:55 DMG Mt. Juliet, TN Collected by Collected date/time Received date/time MW-3 L1776133-03 GW 09/09/24 12:50 09/11/24 08:00 Method Batch Dilution Preparation Analysis Analyst Location date/time date/time Volatile Organic Compounds (GC/MS) by Method 8260B WG2362466 1 09/16/24 14:40 09/16/24 14:40 DYW Mt. Juliet, TN Semi-Volatile Organic Compounds (GC) by Method 3511/8015 WG2365435 1 09/19/24 08:17 09/19/24 19:15 DMG Mt. Juliet, TN Collected by Collected date/time Received date/time MW-4 L1776133-04 GW 09/09/24 09:50 09/11/24 08:00 Method Batch Dilution Preparation Analysis Analyst Location date/time date/time Volatile Organic Compounds (GC/MS) by Method 8260B WG2362466 1 09/16/24 15:01 09/16/24 15:01 DYW Mt. Juliet, TN Semi-Volatile Organic Compounds (GC) by Method 3511/8015 WG2365435 1 09/19/24 08:17 09/19/24 19:35 DMG Mt. Juliet, TN Collected by Collected date/time Received date/time MW-7 L1776133-05 GW 09/09/24 10:30 09/11/24 08:00 Method Batch Dilution Preparation Analysis Analyst Location date/time date/time Volatile Organic Compounds (GC/MS) by Method 8260B WG2362466 1 09/16/24 15:22 09/16/24 15:22 DYW Mt. Juliet, TN Semi-Volatile Organic Compounds (GC) by Method 3511/8015 WG2365435 1 09/19/24 08:17 09/19/24 19:56 DMG Mt. Juliet, TN Collected by Collected date/time Received date/time MW-8 L1776133-06 GW 09/09/24 11:10 09/11/24 08:00 Method Batch Dilution Preparation Analysis Analyst Location date/time date/time Volatile Organic Compounds (GC/MS) by Method 8260B WG2362466 1 09/16/24 15:42 09/16/24 15:42 DYW Mt. Juliet, TN Semi-Volatile Organic Compounds (GC) by Method 3511/8015 WG2365435 1 09/19/24 08:17 09/19/24 20:16 DMG Mt. Juliet, TN Collected by Collected date/time Received date/time MW-9 L1776133-07 GW 09/09/24 16:05 09/11/24 08:00 Method Batch Dilution Preparation Analysis Analyst Location date/time date/time Volatile Organic Compounds (GC/MS) by Method 8260B WG2362466 1 09/16/24 16:03 09/16/24 16:03 DYW Mt. Juliet, TN Semi-Volatile Organic Compounds (GC) by Method 3511/8015 WG2365435 1 09/19/24 08:17 09/19/24 20:36 DMG Mt. Juliet, TN 1 Cp 2 Tc 3 Ss 4 Cn 5 Sr 6 Qc 7 Gl 8 Al 9 Sc ACCOUNT:PROJECT:SDG:DATE/TIME:PAGE: Broadbent & Associates - UT Pilot 746-605-13 L1776133 09/20/24 22:20 3 of 22 ACCOUNT:PROJECT:SDG:DATE/TIME:PAGE: Broadbent & Associates - UT Pilot 746-605-13 L1776133 09/21/24 07:14 3 of 22 SAMPLE SUMMARY Collected by Collected date/time Received date/time MW-10 L1776133-08 GW 09/09/24 14:55 09/11/24 08:00 Method Batch Dilution Preparation Analysis Analyst Location date/time date/time Volatile Organic Compounds (GC/MS) by Method 8260B WG2362466 1 09/16/24 16:24 09/16/24 16:24 DYW Mt. Juliet, TN Semi-Volatile Organic Compounds (GC) by Method 3511/8015 WG2365435 1 09/19/24 08:17 09/19/24 20:56 DMG Mt. Juliet, TN Collected by Collected date/time Received date/time MW-11 L1776133-09 GW 09/09/24 14:25 09/11/24 08:00 Method Batch Dilution Preparation Analysis Analyst Location date/time date/time Volatile Organic Compounds (GC/MS) by Method 8260B WG2362466 1 09/16/24 16:45 09/16/24 16:45 DYW Mt. Juliet, TN Semi-Volatile Organic Compounds (GC) by Method 3511/8015 WG2365435 1 09/19/24 08:17 09/19/24 21:17 DMG Mt. Juliet, TN Collected by Collected date/time Received date/time MW-12 L1776133-10 GW 09/09/24 15:30 09/11/24 08:00 Method Batch Dilution Preparation Analysis Analyst Location date/time date/time Volatile Organic Compounds (GC/MS) by Method 8260B WG2362466 1 09/16/24 17:05 09/16/24 17:05 DYW Mt. Juliet, TN Semi-Volatile Organic Compounds (GC) by Method 3511/8015 WG2365435 1 09/19/24 08:17 09/19/24 21:37 DMG Mt. Juliet, TN Collected by Collected date/time Received date/time TRIP BLANK L1776133-11 GW 09/09/24 15:30 09/11/24 08:00 Method Batch Dilution Preparation Analysis Analyst Location date/time date/time Volatile Organic Compounds (GC/MS) by Method 8260B WG2362466 1 09/16/24 11:12 09/16/24 11:12 DYW 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 L1776133 09/20/24 22:20 4 of 22 ACCOUNT:PROJECT:SDG:DATE/TIME:PAGE: Broadbent & Associates - UT Pilot 746-605-13 L1776133 09/21/24 07:14 4 of 22 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 Sample Delivery Group (SDG) Narrative pH outside of method requirement. Lab Sample ID Project Sample ID Method L1776133-01 MW-1 3511/8015 L1776133-02 MW-2 3511/8015 L1776133-03 MW-3 3511/8015 L1776133-04 MW-4 3511/8015 L1776133-07 MW-9 3511/8015 L1776133-08 MW-10 3511/8015 L1776133-09 MW-11 3511/8015 L1776133-10 MW-12 3511/8015 1 Cp 2 Tc 3 Ss 4 Cn 5 Sr 6 Qc 7 Gl 8 Al 9 Sc ACCOUNT:PROJECT:SDG:DATE/TIME:PAGE: Broadbent & Associates - UT Pilot 746-605-13 L1776133 09/20/24 22:20 5 of 22 Jeff Carr Project Manager ACCOUNT:PROJECT:SDG:DATE/TIME:PAGE: Broadbent & Associates - UT Pilot 746-605-13 L1776133 09/21/24 07:14 5 of 22 SAMPLE RESULTS - 01 L1776133 MW-1 Collected date/time: 09/09/24 12:10 Volatile Organic Compounds (GC/MS) by Method 8260B Result Qualifier RDL Dilution Analysis Batch Analyte ug/l ug/l date / time Benzene 50.0 1.00 1 09/16/2024 13:58 WG2362466 Toluene 1.51 1.00 1 09/16/2024 13:58 WG2362466 Ethylbenzene 4.40 1.00 1 09/16/2024 13:58 WG2362466 Xylenes, Total 4.58 3.00 1 09/16/2024 13:58 WG2362466 Naphthalene 8.13 5.00 1 09/16/2024 13:58 WG2362466 (S) Toluene-d8 101 80.0-120 09/16/2024 13:58 WG2362466 (S) 4-Bromofluorobenzene 98.0 77.0-126 09/16/2024 13:58 WG2362466 (S) 1,2-Dichloroethane-d4 100 70.0-130 09/16/2024 13:58 WG2362466 Semi-Volatile Organic Compounds (GC) by Method 3511/8015 Result Qualifier RDL Dilution Analysis Batch Analyte ug/l ug/l date / time DRO w/ SGT 426 B 100 1 09/19/2024 18:35 WG2365435 (S) o-Terphenyl 66.3 52.0-156 09/19/2024 18:35 WG2365435 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 L1776133 09/20/24 22:20 6 of 22 ACCOUNT:PROJECT:SDG:DATE/TIME:PAGE: Broadbent & Associates - UT Pilot 746-605-13 L1776133 09/21/24 07:14 6 of 22 SAMPLE RESULTS - 02 L1776133 MW-2 Collected date/time: 09/09/24 11:40 Volatile Organic Compounds (GC/MS) by Method 8260B Result Qualifier RDL Dilution Analysis Batch Analyte ug/l ug/l date / time Benzene 1.44 1.00 1 09/16/2024 14:19 WG2362466 Toluene ND 1.00 1 09/16/2024 14:19 WG2362466 Ethylbenzene ND 1.00 1 09/16/2024 14:19 WG2362466 Xylenes, Total 3.07 3.00 1 09/16/2024 14:19 WG2362466 Naphthalene ND 5.00 1 09/16/2024 14:19 WG2362466 (S) Toluene-d8 102 80.0-120 09/16/2024 14:19 WG2362466 (S) 4-Bromofluorobenzene 97.7 77.0-126 09/16/2024 14:19 WG2362466 (S) 1,2-Dichloroethane-d4 98.4 70.0-130 09/16/2024 14:19 WG2362466 Semi-Volatile Organic Compounds (GC) by Method 3511/8015 Result Qualifier RDL Dilution Analysis Batch Analyte ug/l ug/l date / time DRO w/ SGT 1560 100 1 09/19/2024 18:55 WG2365435 (S) o-Terphenyl 81.6 52.0-156 09/19/2024 18:55 WG2365435 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 L1776133 09/20/24 22:20 7 of 22 ACCOUNT:PROJECT:SDG:DATE/TIME:PAGE: Broadbent & Associates - UT Pilot 746-605-13 L1776133 09/21/24 07:14 7 of 22 SAMPLE RESULTS - 03 L1776133 MW-3 Collected date/time: 09/09/24 12:50 Volatile Organic Compounds (GC/MS) by Method 8260B Result Qualifier RDL Dilution Analysis Batch Analyte ug/l ug/l date / time Benzene ND 1.00 1 09/16/2024 14:40 WG2362466 Toluene ND 1.00 1 09/16/2024 14:40 WG2362466 Ethylbenzene ND 1.00 1 09/16/2024 14:40 WG2362466 Xylenes, Total ND 3.00 1 09/16/2024 14:40 WG2362466 Naphthalene ND 5.00 1 09/16/2024 14:40 WG2362466 (S) Toluene-d8 104 80.0-120 09/16/2024 14:40 WG2362466 (S) 4-Bromofluorobenzene 97.1 77.0-126 09/16/2024 14:40 WG2362466 (S) 1,2-Dichloroethane-d4 96.1 70.0-130 09/16/2024 14:40 WG2362466 Semi-Volatile Organic Compounds (GC) by Method 3511/8015 Result Qualifier RDL Dilution Analysis Batch Analyte ug/l ug/l date / time DRO w/ SGT ND 100 1 09/19/2024 19:15 WG2365435 (S) o-Terphenyl 65.3 52.0-156 09/19/2024 19:15 WG2365435 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 L1776133 09/20/24 22:20 8 of 22 ACCOUNT:PROJECT:SDG:DATE/TIME:PAGE: Broadbent & Associates - UT Pilot 746-605-13 L1776133 09/21/24 07:14 8 of 22 SAMPLE RESULTS - 04 L1776133 MW-4 Collected date/time: 09/09/24 09:50 Volatile Organic Compounds (GC/MS) by Method 8260B Result Qualifier RDL Dilution Analysis Batch Analyte ug/l ug/l date / time Benzene ND 1.00 1 09/16/2024 15:01 WG2362466 Toluene ND 1.00 1 09/16/2024 15:01 WG2362466 Ethylbenzene ND 1.00 1 09/16/2024 15:01 WG2362466 Xylenes, Total ND 3.00 1 09/16/2024 15:01 WG2362466 Naphthalene ND 5.00 1 09/16/2024 15:01 WG2362466 (S) Toluene-d8 106 80.0-120 09/16/2024 15:01 WG2362466 (S) 4-Bromofluorobenzene 97.3 77.0-126 09/16/2024 15:01 WG2362466 (S) 1,2-Dichloroethane-d4 96.8 70.0-130 09/16/2024 15:01 WG2362466 Semi-Volatile Organic Compounds (GC) by Method 3511/8015 Result Qualifier RDL Dilution Analysis Batch Analyte ug/l ug/l date / time DRO w/ SGT 101 B 100 1 09/19/2024 19:35 WG2365435 (S) o-Terphenyl 63.2 52.0-156 09/19/2024 19:35 WG2365435 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 L1776133 09/20/24 22:20 9 of 22 ACCOUNT:PROJECT:SDG:DATE/TIME:PAGE: Broadbent & Associates - UT Pilot 746-605-13 L1776133 09/21/24 07:14 9 of 22 SAMPLE RESULTS - 05 L1776133 MW-7 Collected date/time: 09/09/24 10:30 Volatile Organic Compounds (GC/MS) by Method 8260B Result Qualifier RDL Dilution Analysis Batch Analyte ug/l ug/l date / time Benzene ND 1.00 1 09/16/2024 15:22 WG2362466 Toluene ND 1.00 1 09/16/2024 15:22 WG2362466 Ethylbenzene ND 1.00 1 09/16/2024 15:22 WG2362466 Xylenes, Total ND 3.00 1 09/16/2024 15:22 WG2362466 Naphthalene ND 5.00 1 09/16/2024 15:22 WG2362466 (S) Toluene-d8 106 80.0-120 09/16/2024 15:22 WG2362466 (S) 4-Bromofluorobenzene 97.8 77.0-126 09/16/2024 15:22 WG2362466 (S) 1,2-Dichloroethane-d4 104 70.0-130 09/16/2024 15:22 WG2362466 Semi-Volatile Organic Compounds (GC) by Method 3511/8015 Result Qualifier RDL Dilution Analysis Batch Analyte ug/l ug/l date / time DRO w/ SGT ND 100 1 09/19/2024 19:56 WG2365435 (S) o-Terphenyl 64.7 52.0-156 09/19/2024 19:56 WG2365435 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 L1776133 09/20/24 22:20 10 of 22 ACCOUNT:PROJECT:SDG:DATE/TIME:PAGE: Broadbent & Associates - UT Pilot 746-605-13 L1776133 09/21/24 07:14 10 of 22 SAMPLE RESULTS - 06 L1776133 MW-8 Collected date/time: 09/09/24 11:10 Volatile Organic Compounds (GC/MS) by Method 8260B Result Qualifier RDL Dilution Analysis Batch Analyte ug/l ug/l date / time Benzene 1.21 1.00 1 09/16/2024 15:42 WG2362466 Toluene ND 1.00 1 09/16/2024 15:42 WG2362466 Ethylbenzene ND 1.00 1 09/16/2024 15:42 WG2362466 Xylenes, Total ND 3.00 1 09/16/2024 15:42 WG2362466 Naphthalene ND 5.00 1 09/16/2024 15:42 WG2362466 (S) Toluene-d8 105 80.0-120 09/16/2024 15:42 WG2362466 (S) 4-Bromofluorobenzene 96.9 77.0-126 09/16/2024 15:42 WG2362466 (S) 1,2-Dichloroethane-d4 102 70.0-130 09/16/2024 15:42 WG2362466 Semi-Volatile Organic Compounds (GC) by Method 3511/8015 Result Qualifier RDL Dilution Analysis Batch Analyte ug/l ug/l date / time DRO w/ SGT ND 100 1 09/19/2024 20:16 WG2365435 (S) o-Terphenyl 66.8 52.0-156 09/19/2024 20:16 WG2365435 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 L1776133 09/20/24 22:20 11 of 22 ACCOUNT:PROJECT:SDG:DATE/TIME:PAGE: Broadbent & Associates - UT Pilot 746-605-13 L1776133 09/21/24 07:14 11 of 22 SAMPLE RESULTS - 07 L1776133 MW-9 Collected date/time: 09/09/24 16:05 Volatile Organic Compounds (GC/MS) by Method 8260B Result Qualifier RDL Dilution Analysis Batch Analyte ug/l ug/l date / time Benzene ND 1.00 1 09/16/2024 16:03 WG2362466 Toluene ND 1.00 1 09/16/2024 16:03 WG2362466 Ethylbenzene ND 1.00 1 09/16/2024 16:03 WG2362466 Xylenes, Total ND 3.00 1 09/16/2024 16:03 WG2362466 Naphthalene ND 5.00 1 09/16/2024 16:03 WG2362466 (S) Toluene-d8 106 80.0-120 09/16/2024 16:03 WG2362466 (S) 4-Bromofluorobenzene 96.6 77.0-126 09/16/2024 16:03 WG2362466 (S) 1,2-Dichloroethane-d4 103 70.0-130 09/16/2024 16:03 WG2362466 Semi-Volatile Organic Compounds (GC) by Method 3511/8015 Result Qualifier RDL Dilution Analysis Batch Analyte ug/l ug/l date / time DRO w/ SGT ND 100 1 09/19/2024 20:36 WG2365435 (S) o-Terphenyl 66.3 52.0-156 09/19/2024 20:36 WG2365435 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 L1776133 09/20/24 22:20 12 of 22 ACCOUNT:PROJECT:SDG:DATE/TIME:PAGE: Broadbent & Associates - UT Pilot 746-605-13 L1776133 09/21/24 07:14 12 of 22 SAMPLE RESULTS - 08 L1776133 MW-10 Collected date/time: 09/09/24 14:55 Volatile Organic Compounds (GC/MS) by Method 8260B Result Qualifier RDL Dilution Analysis Batch Analyte ug/l ug/l date / time Benzene ND 1.00 1 09/16/2024 16:24 WG2362466 Toluene ND 1.00 1 09/16/2024 16:24 WG2362466 Ethylbenzene ND 1.00 1 09/16/2024 16:24 WG2362466 Xylenes, Total ND 3.00 1 09/16/2024 16:24 WG2362466 Naphthalene ND 5.00 1 09/16/2024 16:24 WG2362466 (S) Toluene-d8 105 80.0-120 09/16/2024 16:24 WG2362466 (S) 4-Bromofluorobenzene 97.1 77.0-126 09/16/2024 16:24 WG2362466 (S) 1,2-Dichloroethane-d4 102 70.0-130 09/16/2024 16:24 WG2362466 Semi-Volatile Organic Compounds (GC) by Method 3511/8015 Result Qualifier RDL Dilution Analysis Batch Analyte ug/l ug/l date / time DRO w/ SGT ND 100 1 09/19/2024 20:56 WG2365435 (S) o-Terphenyl 65.8 52.0-156 09/19/2024 20:56 WG2365435 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 L1776133 09/20/24 22:20 13 of 22 ACCOUNT:PROJECT:SDG:DATE/TIME:PAGE: Broadbent & Associates - UT Pilot 746-605-13 L1776133 09/21/24 07:14 13 of 22 SAMPLE RESULTS - 09 L1776133 MW-11 Collected date/time: 09/09/24 14:25 Volatile Organic Compounds (GC/MS) by Method 8260B Result Qualifier RDL Dilution Analysis Batch Analyte ug/l ug/l date / time Benzene ND 1.00 1 09/16/2024 16:45 WG2362466 Toluene ND 1.00 1 09/16/2024 16:45 WG2362466 Ethylbenzene ND 1.00 1 09/16/2024 16:45 WG2362466 Xylenes, Total ND 3.00 1 09/16/2024 16:45 WG2362466 Naphthalene ND 5.00 1 09/16/2024 16:45 WG2362466 (S) Toluene-d8 106 80.0-120 09/16/2024 16:45 WG2362466 (S) 4-Bromofluorobenzene 96.5 77.0-126 09/16/2024 16:45 WG2362466 (S) 1,2-Dichloroethane-d4 100 70.0-130 09/16/2024 16:45 WG2362466 Semi-Volatile Organic Compounds (GC) by Method 3511/8015 Result Qualifier RDL Dilution Analysis Batch Analyte ug/l ug/l date / time DRO w/ SGT 135 B 100 1 09/19/2024 21:17 WG2365435 (S) o-Terphenyl 65.3 52.0-156 09/19/2024 21:17 WG2365435 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 L1776133 09/20/24 22:20 14 of 22 ACCOUNT:PROJECT:SDG:DATE/TIME:PAGE: Broadbent & Associates - UT Pilot 746-605-13 L1776133 09/21/24 07:14 14 of 22 SAMPLE RESULTS - 10 L1776133 MW-12 Collected date/time: 09/09/24 15:30 Volatile Organic Compounds (GC/MS) by Method 8260B Result Qualifier RDL Dilution Analysis Batch Analyte ug/l ug/l date / time Benzene ND 1.00 1 09/16/2024 17:05 WG2362466 Toluene ND 1.00 1 09/16/2024 17:05 WG2362466 Ethylbenzene ND 1.00 1 09/16/2024 17:05 WG2362466 Xylenes, Total ND 3.00 1 09/16/2024 17:05 WG2362466 Naphthalene ND 5.00 1 09/16/2024 17:05 WG2362466 (S) Toluene-d8 106 80.0-120 09/16/2024 17:05 WG2362466 (S) 4-Bromofluorobenzene 96.3 77.0-126 09/16/2024 17:05 WG2362466 (S) 1,2-Dichloroethane-d4 101 70.0-130 09/16/2024 17:05 WG2362466 Semi-Volatile Organic Compounds (GC) by Method 3511/8015 Result Qualifier RDL Dilution Analysis Batch Analyte ug/l ug/l date / time DRO w/ SGT ND 100 1 09/19/2024 21:37 WG2365435 (S) o-Terphenyl 64.2 52.0-156 09/19/2024 21:37 WG2365435 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 L1776133 09/20/24 22:20 15 of 22 ACCOUNT:PROJECT:SDG:DATE/TIME:PAGE: Broadbent & Associates - UT Pilot 746-605-13 L1776133 09/21/24 07:14 15 of 22 SAMPLE RESULTS - 11 L1776133 TRIP BLANK Collected date/time: 09/09/24 15:30 Volatile Organic Compounds (GC/MS) by Method 8260B Result Qualifier RDL Dilution Analysis Batch Analyte ug/l ug/l date / time Benzene ND 1.00 1 09/16/2024 11:12 WG2362466 Toluene ND 1.00 1 09/16/2024 11:12 WG2362466 Ethylbenzene ND 1.00 1 09/16/2024 11:12 WG2362466 Xylenes, Total ND 3.00 1 09/16/2024 11:12 WG2362466 Naphthalene ND 5.00 1 09/16/2024 11:12 WG2362466 (S) Toluene-d8 106 80.0-120 09/16/2024 11:12 WG2362466 (S) 4-Bromofluorobenzene 97.4 77.0-126 09/16/2024 11:12 WG2362466 (S) 1,2-Dichloroethane-d4 102 70.0-130 09/16/2024 11:12 WG2362466 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 L1776133 09/20/24 22:20 16 of 22 ACCOUNT:PROJECT:SDG:DATE/TIME:PAGE: Broadbent & Associates - UT Pilot 746-605-13 L1776133 09/21/24 07:14 16 of 22 QUALITY CONTROL SUMMARYWG2362466 Volatile Organic Compounds (GC/MS) by Method 8260B L1776133-01,02,03,04,05,06,07,08,09,10,11 Method Blank (MB) (MB) R4120922-3 09/16/24 10:10 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 Xylenes, Total U 0.174 3.00 Naphthalene U 1.00 5.00 (S) Toluene-d8 106 80.0-120 (S) 4-Bromofluorobenzene 94.8 77.0-126 (S) 1,2-Dichloroethane-d4 99.1 70.0-130 Laboratory Control Sample (LCS) • Laboratory Control Sample Duplicate (LCSD) (LCS) R4120922-1 09/16/24 09:07 • (LCSD) R4120922-2 09/16/24 09:28 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 5.24 5.43 105 109 70.0-123 3.56 20 Toluene 5.00 5.52 5.75 110 115 79.0-120 4.08 20 Ethylbenzene 5.00 5.35 5.48 107 110 79.0-123 2.40 20 Xylenes, Total 15.0 15.7 16.5 105 110 79.0-123 4.97 20 Naphthalene 5.00 4.23 4.74 84.6 94.8 54.0-135 11.4 20 (S) Toluene-d8 105 105 80.0-120 (S) 4-Bromofluorobenzene 95.1 93.4 77.0-126 (S) 1,2-Dichloroethane-d4 99.6 100 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 L1776133 09/20/24 22:20 17 of 22 ACCOUNT:PROJECT:SDG:DATE/TIME:PAGE: Broadbent & Associates - UT Pilot 746-605-13 L1776133 09/21/24 07:14 17 of 22 QUALITY CONTROL SUMMARYWG2365435 Semi-Volatile Organic Compounds (GC) by Method 3511/8015 L1776133-01,02,03,04,05,06,07,08,09,10 Method Blank (MB) (MB) R4122316-1 09/19/24 17:34 MB Result MB Qualifier MB MDL MB RDL Analyte ug/l ug/l ug/l DRO w/ SGT 54.9 J 24.7 100 (S) o-Terphenyl 63.5 52.0-156 Laboratory Control Sample (LCS) • Laboratory Control Sample Duplicate (LCSD) (LCS) R4122316-2 09/19/24 17:55 • (LCSD) R4122316-3 09/19/24 18:15 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 %%%%% DRO w/ SGT 1500 1170 1170 78.0 78.0 50.0-150 0.000 20 (S) o-Terphenyl 61.5 62.0 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 L1776133 09/20/24 22:20 18 of 22 ACCOUNT:PROJECT:SDG:DATE/TIME:PAGE: Broadbent & Associates - UT Pilot 746-605-13 L1776133 09/21/24 07:14 18 of 22 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 B The same analyte is found in the associated blank. J The identification of the analyte is acceptable; the reported value is an estimate. 1 Cp 2 Tc 3 Ss 4 Cn 5 Sr 6 Qc 7 Gl 8 Al 9 Sc ACCOUNT:PROJECT:SDG:DATE/TIME:PAGE: Broadbent & Associates - UT Pilot 746-605-13 L1776133 09/20/24 22:20 19 of 22 ACCOUNT:PROJECT:SDG:DATE/TIME:PAGE: Broadbent & Associates - UT Pilot 746-605-13 L1776133 09/21/24 07:14 19 of 22 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 L1776133 09/20/24 22:20 20 of 22 ACCOUNT:PROJECT:SDG:DATE/TIME:PAGE: Broadbent & Associates - UT Pilot 746-605-13 L1776133 09/21/24 07:14 20 of 22