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HomeMy WebLinkAboutDERR-2024-011565ANNUAL GROUNDWATER MONITORING REPORT SEPTEMBER 2024 EVENT Flying J Travel Center #748 600 West 750 North Willard, Box Elder County, Utah DERR Facility ID #0100590, LUST Release Site ID: KWW 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 Street, Ste. #99 Sandy, Utah 84070 (801) 505-9251 October 21, 2024 Project No. 19-14-106 ANNUAL GROUNDWATER MONITORING REPORT, SEPTEMBER 2024 EVENT FLYING J TRAVEL CENTER #748 WILLARD, UTAH Broadbent & Associates, Inc. (Broadbent) is pleased to present this Annual Groundwater Monitoring Report, September 2024 Event on behalf of Pilot Travel Centers LLC (Pilot) associated with Flying J Travel Center #748 (Site) located in Willard, Box Elder County, Utah. Figure 1 depicts the general location of the Site. 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 that exists beneath the Site due to a historic release of fuel. Sarah Hamilton (GS #1869) performed the September 2024 groundwater monitoring and sampling. Details of work performed, discussion of results, and recommendations are provided below. Facility Name / Address: Flying J Travel Center #748, 600 West 750 North, Willard, 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.: 19-14-106 Primary Regulatory Agency / ID No.: Utah Department of Environmental Quality (UDEQ) DERR Facility ID #4000302, LUST Release ID: KWW 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 (2024): 1.Conducted groundwater monitoring and sampling on September 5, 2024. WORK SCHEDULED FOR NEXT PERIOD (2025): 1.Prepare and submit the Annual Groundwater Monitoring Report, September 2024 Event (contained herein). 2.Conduct groundwater monitoring and sampling in June 2025. ANNUAL MONITORING PLAN SUMMARY: Groundwater level gauging: MW-1 through MW-3, MW-5, MW-8 through MW-10, MW-12 through MW-15, MW-18 through MW-21 (annual) Groundwater sample collection: MW-1 through MW-3, MW-8 through MW-10, MW-12, MW-18, MW-21 (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: 2.59 (MW-13) to 10.52 (MW-5) (ft below TOC) Gradient direction: West (compass direction) Gradient magnitude: 0.03 (ft/ft) Average change in elevation: 1.59 increase (ft since last measurement) Laboratory Analytical Data Summary: Benzene was detected above specific UDEQ Initial Screening Levels (ISLs) in select wells (reported below). Broadbent & Associates, Inc. Salt Lake City, Utah Annual Groundwater Monitoring Report, September 2024 Event Flying J Travel Center #748/Willard, Utah October 21, 2024 Page 2 ACTIVITIES CONDUCTED & RESULTS: Annual groundwater monitoring and sampling activities were conducted on September 5, 2024. The event followed the previous annual event conducted in September 2023. Per Utah Department of Environmental Quality Division of Environmental Response and Remediation (DERR), groundwater monitoring and sampling is to be conducted on an annual basis alternating between summer and winter events. Monitoring wells MW-1 through MW-3, MW-5, MW-8 through MW-10, MW-12 through MW-15, and MW-18 through MW-21 were gauged to measure depth to water and depth to LNAPL, if present. Monitoring well MW-20 was unable to be located during this event, with MW-20 presumed to have vegetation covering over. No other irregularities were reported during gauging activities. Depth to groundwater ranged from 2.59 (MW-13) to 10.52 (MW-5). LNAPL was not detected in the groundwater monitoring wells during the monitoring event. Groundwater flow is generally to the west, with an average calculated gradient of 0.03 ft/ft. Groundwater elevations increased approximately 1.59 feet across the Site since the previous annual event. 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. Nine (9) groundwater samples were collected from monitoring wells MW-1 through MW-3, MW-8 through MW- 10, MW-12, MW-18, and MW-21 on September 5, 2024. No irregularities were reported during purging or sampling. 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), methyl tertiary-butyl ether (MTBE), and naphthalene by EPA Method 8260B, total petroleum hydrocarbons (TPH) gasoline range organics (GRO) by EPA Method 8015D, 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 MW-1 (13.5 µg/L) and MW-9 (6.71 µg/L) with concentrations exceeding the UDEQ ISL of 5 µg/L. •TPH-GRO was detected in five (5) of the nine (9) groundwater samples ranging from 117 µg/L (MW-3) to 612 µg/L (MW-9). •TPH-DRO was detected in six (6) of the nine (9) groundwater samples submitted ranging from 134 µg/L (MW-18) to 738 µg/L (MW-1). •MTBE was detected in six (6) of the nine (9) groundwater samples ranging from 4.05 µg/L (MW-12) to 128 µg/L (MW-18). DISCUSSION: Based on the results of the annual groundwater monitoring and sampling conducted on September 5, 2024, BTEX, TPH-DRO, TPH-GRO, and MTBE were below laboratory reported detection limits or below UDEQ ISLs in each submitted sample with the exception of benzene in MW-1 at 13.5 µg/L and MW-9 at 8.8 µg/L. The groundwater gradient at the Site is to the west, which is consistent with previous monitoring events. Graphs 1 through 3 depict the concentrations of selected constituents versus time for select monitoring wells. Broadbent & Associates, Inc. Salt Lake City, Utah Annual Groundwater Monitoring Report, September 2024 Event Flying J Travel Center #748/Willard, Utah October 21, 2024 Page 3 RECOMMENDATIONS: Broadbent recommends continuing with groundwater monitoring and sampling in accordance with the monitoring plan generally summarized above and as approved by DERR. The next annual groundwater monitoring and sampling event is estimated to occur in June 2025. It is recommended to evaluate the Site for no further action if concentrations of residual impacts are at or below UDEQ ISLs. 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 in vegetation. 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 2023 Groundwater Monitoring Report, September 2023 Event, Flying J Travel Center #748, 600 West 750 North, Willard Bay, Box Elder County, Utah, DERR Facility ID #0100590, LUST Release Site ID: KWW, October 23. Utah Department of Environmental Quality, 2005. Initial Screening Levels. November 5. Broadbent & Associates, Inc. Salt Lake City, Utah Annual Groundwater Monitoring Report, September 2024 Event Flying J Travel Center #748/Willard, Utah October 21, 2024 Page 4 ATTACHMENTS: Figure 1 Site Location Map Figure 2 Site Layout Map Figure 3 Potentiometric Surface Map (9/5/2024) Figure 4 Groundwater Analytical Map (9/5/2024) Table 1 Groundwater Monitoring and Analytical Results Graphs 1-3 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 LNAPL: light non-aqueous phase liquid DO: dissolved oxygen MTBE: methyl tertiary butyl ether DRO: diesel range organics NO3: nitrate as nitrogen Eh: oxidation reduction potential PAHs: polycyclic aromatic hydrocarbons Fe2+: ferrous iron SO4: sulfate ft/ft: feet per foot SVOCs: semi-volatile organic compounds gal: gallons TOC: top of casing TPH: Total petroleum hydrocarbons g/L: micrograms per liter UDEQ Utah Department of Environmental Quality IRLs Initial Screening Levels Site Location Map Flying J Travel Center #748 600 West 750 North Willard, Utah Project No. 19-14-106 Figure Prepared by: JEH Reviewed by: ACM Date: 3/2/21 1 0 SCALE: 1 inch = 5000 feet 5000 10000 LEGEND Site Location MW-25 MW-24 MW-23 MW-19 MW-18 MW-16 MW-12 MW-15 MW-13 MW-14 MW-9 MW-1 MW-3 MW-8MW-6 MW-10 MW-11 MW-5 MW-20 MW-7 MW-21 MW-17 MW-2 Au t o F u e l Is l a n d s Di e s e l F u e l Is l a n d s 60 0 W Flying J Travel Center W 750 N I n t e r s t a t e 1 5 Site Layout Map Flying J Travel Center #748 600 West 750 North Willard, Utah Project No. 19-14-106 Figure Prepared by: JEH Reviewed by: ACM Date: 3/2/21 2 0 SCALE: 1 inch = 120 feet 120 240 LEGEND Property Boundary (approximate) Monitoring Well LocationMW-3 Au t o F u e l Is l a n d s Di e s e l F u e l Is l a n d s 6 0 0 W Flying J Travel Center Not Measured MW-19 92.49 MW-18 MW-16 96.26 MW-12 96.09 MW-15 MW-13 MW-14 95.79 MW-9 93.47 MW-1 94.25 MW-3 89.03 MW-8MW-6 87.22 MW-10 MW-11 84.51 MW-5 92.10 MW-21 Not Measured MW-17 91.73 MW-2 Not Measured 96.86 97.47 89.53 Not Measured Not Measured Potentiometric Surface Map (9/5/24) Flying J Travel Center #748 600 West 750 North Willard, Utah Project No. 19-14-106 Figure Prepared by: AGH Reviewed by: ACM Date: 10/1/24 3 0 SCALE: 1 inch = 80 feet 80 160 LEGEND Property Boundary (approximate) MW-3 Monitoring Well Location and Groundwater Elevation (feet) Groundwater Elevation Contour (0.5 feet)92.00 Groundwater Flow Direction (0.03 feet/foot) 94.25 *Monitoring well not utilized for potentiometric surface depiction Au t o F u e l Is l a n d s Di e s e l F u e l Is l a n d s 6 0 0 W Flying J Travel Center B=13.5 T<1.00 E<1.00 X<3.00 M=5.98 N<5.00 TPH-G=141 TPH-D=738 B<1.00 T<1.00 E<1.00 X<3.00 M<1.00 N<5.00 TPH-G<100 TPH-D<100 B=6.71 T<1.00 E<1.00 X<3.00 M=6.86 N<5.00 TPH-G=612 TPH-D=630 B<1.00 T<1.00 E<1.00 X<3.00 M=9.46 N<5.00 TPH-G=117 TPH-D=633 B<1.00 T<1.00 E<1.00 X<3.00 M<1.00 N<5.00 TPH-G<100 TPH-D=351 B<1.00 T<1.00 E<1.00 X<3.00 M=4.05 N<5.00 TPH-G=142 TPH-D=275 B<1.00 T<1.00 E<1.00 X<3.00 M=128 N<5.00 TPH-G=171 TPH-D=134 Not Sampled Not Sampled Not Sampled Not Sampled Not Sampled Not Sampled Not Sampled Not Sampled Not Sampled B<1.00 T<1.00 E<1.00 X<3.00 M<1.00 N<5.00 TPH-G<100 TPH-D<100 B<1.00 T<1.00 E<1.00 X<3.00 M=1.99 N<5.00 TPH-G<100 TPH-D<100 MW-19 MW-18 MW-16 MW-12 MW-15 MW-13 MW-14 MW-9 MW-1 MW-3 MW-8MW-6 MW-10 MW-11 MW-5 MW-21 MW-17 MW-2 Groundwater Analytical Map (9/5/24) Flying J Travel Center #748 600 West 750 North Willard, Utah Project No. 19-14-106 Figure Prepared by: AGH Reviewed by: ACM Date: 10/1/24 4 0 SCALE: 1 inch = 80 feet 80 160 LEGEND Property Boundary (approximate) Monitoring Well LocationMW-3 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 08/11/99 16,100 10.9 <10 <10 <30 <10 <500 <500 6.67 92.09 05/16/00 9,600 <2 <2 <2 <6 <2 <500 <500 NM -- 10/17/00 NS NS NS NS NS NS NS NS 5.76 93.32 11/20/00 NS NS NS NS NS NS NS NS 7.63 91.45 09/13/01 2,020 108 <2 <2 <6 4 <500 900 8.48 90.60 05/14/02 823 3.8 <10 <10 <30 <10 <500 <500 6.23 92.85 07/01/03 246 18 <2 <2 <6 <2 <500 4,240 7.11 91.97 12/05/03 275 <2 <2 <2 <6 <2 <1,000 <2,000 8.67 90.41 01/25/06 50 30 <5.0 <1.0 <3.0 <5.0 280 530 6.33 92.75 09/27/06 120 270 <5.0 1.6 <3.0 <5.0 980 690 6.56 92.52 09/14/07 110 230 <5.0 <1.0 <3.0 <5.0 550 470 7.95 91.13 07/01/09 94 <1.0 <5.0 <1.0 <3.0 <5.0 230 5,300 7.33 91.75 12/18/09 120 1.6 <5.0 <1.0 <3.0 <5.0 180 3,700 9.41 89.67 04/20/11 <2.0 27.5 <2.0 <2.0 <2.0 3.4 260 1,430 5.55 93.53 10/19/11 61.9 9.9 <2.0 <2.0 <4.0 <10 <200 768 8.10 90.98 04/18/12 87.8 7.7 <2.0 <2.0 <4.0 2.4J 270 778 8.05 91.03 10/10/12 83.7 1.3 <2.0 0.39J <3.0 <5.0 211 777 10.31 88.77 04/29/13 76.9 2.5 <2.0 <2.0 <3.0 <5.0 <200 374 8.29 90.79 10/15/13 102 0.32J <2.0 <2.0 <3.0 <5.0 344 387 11.20 87.88 04/11/14 65.0 0.26J <2.0 <2.0 <3.0 <5.0 <200 404 8.63 90.45 10/09/14 69.6 0.38J <1.0 <1.0 <1.0 1.4J <200 638 9.69 89.39 04/21/15 48.9 <1.0 <1.0 <1.0 <2.0 <5.0 155 698 9.04 90.04 09/21/16 31.9 <1.0 <1.0 <1.0 <1.0 <4.0 <200 724 9.43 89.65 04/04/18 12.0 <1.0 <1.0 <1.0 <1.0 <4.0 <200 643 9.04 90.04 09/09/19 16.7 <1.0 <1.0 0.550J <3.0 12.0 384J 2,040 10.35 88.73 06/24/21 4.45 <1.00 <1.00 2.00 <3.00 <5.00 <100 633 9.33 89.75 12/05/22 4.38 <1.00 <1.00 3.00 <3.00 <5.00 <100 1,550 10.88 88.20 09/29/23 1.70 <1.00 <1.00 <1.00 <3.00 <5.00 <100 1,230 8.51 90.57 09/05/24 5.98 13.5 <1.00 <1.00 <3.00 <5.00 141 738 5.61 93.47 08/11/99 14,200 1,018 11.8 <10 <30 <10 <500 <500 7.00 92.09 05/16/00 5,870 6.5 <2 38.8 <6 <2 <500 <500 NM -- 10/17/00 NS NS NS NS NS NS NS NS 5.89 93.05 11/20/00 NS NS NS NS NS NS NS NS 7.95 90.99 09/13/01 NS NS NS NS NS NS NS NS 8.89 90.05 05/14/02 389 227 <10 15.8 97.1 54.9 1,900 1,000 6.52 92.42 07/01/03 120 502 <2 3.0 <6 32 1,830 4,920 7.52 91.42 12/05/03 205 246 <2 <2.0 <6 12 1,330 2,410 9.51 89.43 01/25/06 78 630 <50 <10 <30 <50 1,600 1,500 6.78 92.16 09/27/06 68 560 <5.0 1.1 <3.0 7.2 2,000 1,000 6.95 91.99 09/14/07 58 1,200 <5.0 <1.0 3.3 <5.0 990 1,000 8.50 90.44 07/01/09 27 360 <50 <10 <30 <50 1,300 2,900 7.08 91.86 12/18/09 23 190 <50 <10 <30 <50 1,200 1,600 10.10 88.84 04/20/11 38.2 61.7 1.1 <2.0 <2.0 5.6 363 626 5.70 93.24 10/19/11 31.5 163 3.8 <2.0 <4.0 <10 405 1,290 8.53 90.41 04/18/12 4.8 80.8 1.6J 0.49J 2.8J <5.0 419 715 8.60 90.34 10/10/12 a 23.9 1.4 <2.0 <2.0 <3.0 2.4J <200 3,040 10.93a 88.01 04/29/13 8.0 10.6 <2.0 <2.0 <3.0 <5.0 <200 894 8.88 90.06 10/15/13 28.6 <1.0 <2.0 <2.0 <3.0 <5.0 <200 641 11.84 87.10 04/11/14 12.5 2.4 <2.0 <2.0 <3.0 2.6J <200 1,100 9.35 89.59 10/09/14 25.8 <1.0 <1.0 <1.0 <1.0 <2.0 <200 1,430 10.55 88.39 04/21/15 5.5 0.90J <1.0 <1.0 <2.0 <5.0 134 856 10.00 88.94 09/21/16 16.9 <1.0 <1.0 <1.0 <1.0 <4.0 <200 1,090 10.37 88.57 04/04/18 5.3 <1.0 <1.0 <1.0 <1.0 <4.0 <200 957 10.19 88.75 09/09/19 7.36 <1.0 <1.0 <1.0 <3.0 10.8 398J 2,320 11.80 87.14 06/24/21 1.46 <1.00 <1.00 <1.00 <3.00 <5.00 <100 593 10.18 88.76 12/05/22 3.26 <1.00 <1.00 <1.00 <3.00 <5.00 <100 298 13.20 85.74 09/28/23 2.31 <1.00 <1.00 <1.00 <3.00 <5.00 <100 502 9.05 89.89 09/05/24 <1.00 <1.00 <1.00 <1.00 <3.00 <5.00 <100 351 7.21 91.73 RBCA Tier 1 SL Relative Groundwater Elevation (feet) MW-2 Date DEQ ISL Depth to Groundwater (feet btoc) Concentrations (µg/L) Well No. MW-1 TABLE 1 Groundwater Monitoring and Analytical Results Flying J Travel Center No. 748 600 West 750 North, Willard, Utah Broadbent 748 Analytical Tables 10-21-24 Page 1 of 11 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 10,000RBCA Tier 1 SL Relative Groundwater Elevation (feet) Date DEQ ISL Depth to Groundwater (feet btoc) Concentrations (µg/L) Well No. MW-1 TABLE 1 Groundwater Monitoring and Analytical Results Flying J Travel Center No. 748 600 West 750 North, Willard, Utah 08/11/99 17,600 <10 <10 <10 <30 <10 <500 <500 NM -- 05/16/00 1,820 59.7 <2 4.6 <6 <2 <500 <500 NM -- 11/20/00 NS NS NS NS NS NS NS NS 7.87 91.90 09/13/01 2,370 9.5 <2 <2 <6 <2 <500 <500 8.50 91.27 05/14/02 803 756 <10 <10 <30 <10 1,900 510 6.40 93.37 07/01/03 202 1,240 <2 <2 <6 2 2,830 4,300 7.01 92.76 12/05/03 216 239 <2 <2 <6 2 <1,000 2,130 8.67 91.10 01/25/06 110 1,200 <50 <10 <30 <50 3,200 360 6.61 93.16 09/27/06 120 2.4 <5.0 <1.0 <3.0 <5.0 <100 170 6.65 93.12 09/14/07 64 1,400 <25 <5.0 16 <25 1,600 650 7.95 91.82 07/01/09 31 750 <50 <10 <30 <50 2,600 4,000 7.45 92.32 12/18/09 <10 280 <50 <10 <30 <50 1,500 2,100 9.42 90.35 04/20/11 21.1 563 <10 11.8 15.0 17.7 1,890 918 5.80 93.97 10/19/11 19.1 57.9 <2.0 1.5J <4.0 <10 254 557 8.06 91.71 4/18/201+B+B81 18.2 276 8.9 5.5 7.1 14.1 1,690 922 8.15 91.62 10/09/12 37.1 118 <2.0 1.0J 2.9J 11.2 981 679 10.12 89.65 04/29/13 22.2 139 2.3 1.2J 5.4 18.2 1,920 1,250 8.39 91.38 10/15/13 36.1 20.8 <2.0 0.29J <3.0 5.8 605 663 10.62 89.15 04/11/14 14.9 45.3 <2.0 0.38J 3.3 12.1 520 879 8.59a 91.18 10/09/14 12.9 15.7 <1.0 <1.0 1.2 3.5 490 2,380 9.55 90.22 04/21/15 7.4 14.3 0.35J <1.0 <2.0 0.68J 529 2,130 9.08 90.69 09/21/16 19.9 <1.0 <1.0 <1.0 <1.0 <4.0 288 1,150 7.91 91.86 04/04/18 10.1 16.3 <1.0 <1.0 <1.0 <4.0 267 1,590 8.86 90.91 09/09/19 5.80 0.471J <1.0 <1.0 <3.0 12.4 476J 4,460 10.19 89.58 06/24/21 2.97 <1.00 <1.00 <1.00 <3.00 <5.00 <100 533 8.40 91.37 12/05/22 3.29 <1.00 <1.00 <1.00 <3.00 <5.00 <100 749 11.61 88.16 09/28/23 3.57 <1.00 <1.00 <1.00 <3.00 <5.00 <100 442 7.33 92.44 09/05/24 9.46 <1.00 <1.00 <1.00 <3.00 <5.00 117 633 5.52 94.25 05/16/00 4,140 <2 <2 <2 <6 <2 <500 <500 5.75 89.28 11/20/00 NS NS NS NS NS NS NS NS 7.31 87.72 09/13/01 5,440 <2 <2 <2 <6 <2 <500 <500 9.62 85.41 05/14/02 3,640 <10 <10 <10 <30 <10 <500 <500 6.12 88.91 07/01/03 1,770 <2 <2 <2 <6 <2 <500 <500 7.40 87.63 12/05/03 901 <2 <2 <2 <6 <2 <1,000 <2,000 9.29 85.74 01/24/06 NS NS NS NS NS NS NS NS 5.97 89.06 09/27/06 NS NS NS NS NS NS NS NS 6.29 88.74 09/14/07 140 <1.0 <5.0 <1.0 <3.0 <5.0 <100 <100 8.45 86.58 06/30/09 58 <1.0 <5.0 <1.0 <3.0 <5.0 <100 <100 8.20 86.83 12/18/09 60 <1.0 <5.0 <1.0 <3.0 <5.0 <100 <100 7.19 87.84 04/20/11 3.09 91.94 10/18/11 13.8 <1.0 <2.0 <2.0 <4.0 <10 <200 NA 7.63 87.40 04/17/12 3.8 <1.0 <2.0 <2.0 <4.0 <5.0 <200 NA 6.18 88.85 10/09/12 28.8 <1.0 <2.0 <2.0 <3.0 <5.0 <200 NA 10.25 84.78 04/29/13 NS NS NS NS NS NS NS NS 8.43 86.60 10/15/13 NS NS NS NS NS NS NS NS 10.81 84.22 04/11/14 NS NS NS NS NS NS NS NS 8.16 86.87 10/09/14 NS NS NS NS NS NS NS NS 9.51 85.52 04/21/15 NS NS NS NS NS NS NS NS 9.38 85.65 09/21/16 NS NS NS NS NS NS NS NS 12.68 82.35 04/04/18 NS NS NS NS NS NS NS NS 9.00 86.03 09/09/19 NS NS NS NS NS NS NS NS 12.38 82.65 06/24/21 NS NS NS NS NS NS NS NS 12.92 82.11 12/05/22 NS NS NS NS NS NS NS NS 13.50 81.53 09/28/23 NS NS NS NS NS NS NS NS 10.57 84.46 09/05/24 NS NS NS NS NS NS NS NS 10.52 84.51 MW-5 Not sampled- water level is above screened interval MW-3 Broadbent 748 Analytical Tables 10-21-24 Page 2 of 11 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 10,000RBCA Tier 1 SL Relative Groundwater Elevation (feet) Date DEQ ISL Depth to Groundwater (feet btoc) Concentrations (µg/L) Well No. MW-1 TABLE 1 Groundwater Monitoring and Analytical Results Flying J Travel Center No. 748 600 West 750 North, Willard, Utah 05/16/00 24,700 <2 <2 <2 <6 <2 <500 <500 6.64 89.99 11/20/00 NS NS NS NS NS NS NS NS 8.85 87.78 09/13/01 3,310 <2 <2 <2 <6 <2 <500 <500 10.30 86.33 05/14/02 2,870 <10 <10 <10 <30 <10 <500 <500 6.98 89.65 07/01/03 1,041 <2 <2 <2 <6 <2 <500 <500 8.46 88.17 12/05/03 788 <2 <2 <2 <6 <2 <1,000 <2,000 10.30 86.33 01/25/06 230 3.9 <5.0 <1.0 <3.0 <5.0 250 <100,000 7.07 89.56 09/27/06 150 <1.0 <5.0 <1.0 <3.0 <5.0 160 150 7.86 88.77 09/14/07 120 <1.0 <5.0 <1.0 <3.0 <5.0 <100 <100 9.44 87.19 06/30/09 120 <1.0 <5.0 <1.0 <3.0 <5.0 110 <100 9.38 87.25 12/18/09 75 <1.0 <5.0 <1.0 <3.0 <5.0 <100 <100 9.66 86.97 04/19/11 39.2 <1.0 <2.0 <2.0 <2.0 <5.0 <200 NA 4.82 91.81 10/18/11 33.5 <1.0 <2.0 <2.0 <4.0 <10 <200 NA 8.95 87.68 04/17/12 22.4 <1.0 <2.0 <2.0 <4.0 <5.0 <200 NA 8.49 88.14 10/09/12 27.7 <1.0 <2.0 <2.0 <3.0 <5.0 <200 NA 11.32 85.31 04/29/13 NS NS NS NS NS NS NS NS 9.44 87.19 10/15/13 NS NS NS NS NS NS NS NS 12.00 84.63 04/11/14 NS NS NS NS NS NS NS NS 9.77 86.86 10/09/14 04/21/15 09/21/16 NS NS NS NS NS NS NS NS 13.50 83.13 04/04/18 NS NS NS NS NS NS NS NS 11.63 85.00 09/09/19 NS NS NS NS NS NS NS NS 13.84 82.79 06/24/21 NS NS NS NS NS NS NS NS 13.98 82.65 12/05/22 NS NS NS NS NS NS NS NS 14.01 82.62 09/28/23 NS NS NS NS NS NS NS NS 11.88 84.75 09/05/24 05/16/00 140 <2 <2 <2 <6 <2 <500 <500 NM -- 10/17/00 NS NS NS NS NS NS NS NS 7.03 87.34 11/20/00 NS NS NS NS NS NS NS NS 8.19 86.18 09/13/01 68.7 <2 <2 <2 <6 <2 <500 <500 10.28 84.09 05/14/02 96.1 <2 <2 <2 <6 <2 <500 <500 7.67 86.70 07/01/03 83 <2 <2 <2 <6 <2 <500 <500 8.46 85.91 01/25/06 NS NS NS NS NS NS NS NS 7.24 87.13 09/27/06 NS NS NS NS NS NS NS NS 7.41 86.96 09/14/07 NS NS NS NS NS NS NS NS 9.25 85.12 06/30/09 11 <1.0 <5.0 <1.0 <3.0 <5.0 <100 <100 8.70 85.67 12/18/09 NS NS NS NS NS NS NS NS 9.02 85.35 Well inaccessible (under parked truck) Well inaccessible (under parked truck) MW-7 Well inaccessible (under parked truck) Well not found for any event since 4-19-11 MW-6 Broadbent 748 Analytical Tables 10-21-24 Page 3 of 11 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 10,000RBCA Tier 1 SL Relative Groundwater Elevation (feet) Date DEQ ISL Depth to Groundwater (feet btoc) Concentrations (µg/L) Well No. MW-1 TABLE 1 Groundwater Monitoring and Analytical Results Flying J Travel Center No. 748 600 West 750 North, Willard, Utah 05/16/00 10,000 <2 <2 <2 <6 <2 <500 <500 NM -- 10/17/00 NS NS NS NS NS NS NS NS 6.35 92.01 11/20/00 NS NS NS NS NS NS NS NS 8.87 89.49 09/13/01 1,330 <2 <2 <2 <6 <2 <500 <500 9.89 88.47 05/14/02 680 <10 <10 <10 <30 <10 <500 <500 7.12 91.24 07/01/03 NS NS NS NS NS NS NS NS NM -- 12/05/03 147 <2 <2 <2 <6 <2 <1,000 <2,000 10.35 88.01 01/25/06 63 17 <25 <5.0 <15 <25 <100 220 7.33 91.03 09/27/06 30 <1.0 <5.0 <1.0 <3.0 <5.0 <100 <100 7.55 90.81 09/14/07 12 <1.0 <5.0 <1.0 <3.0 <5.0 <100 <100 9.20 89.16 06/30/09 15 <1.0 <5.0 <1.0 <3.0 <5.0 <100 <100 9.12 89.24 12/18/09 19 <1.0 <5.0 <1.0 <3.0 <5.0 <100 <100 10.41 87.95 04/19/11 13.6 <1.0 <2.0 <2.0 <2.0 <5.0 <200 <380 5.51 92.85 10/18/11 15.2 <1.0 <2.0 <2.0 <4.0 <10 <200 <380 8.99 89.37 04/17/12 12.1 <1.0 <2.0 <2.0 <4.0 <5.0 <200 <380 9.20 89.16 10/09/12 11.6 <1.0 <2.0 <2.0 <3.0 <5.0 <200 <380 11.31 87.05 04/29/13 8.8 <1.0 <2.0 <2.0 <3.0 <5.0 <200 <190 9.58 88.78 10/15/13 9.0 <1.0 <2.0 <2.0 <3.0 <5.0 <200 <190 12.00 86.36 04/11/14 9.4 <1.0 <2.0 <2.0 <3.0 <5.0 <200 <190 10.11 88.25 10/09/14 8.6 <1.0 <1.0 <1.0 <1.0 <2.0 <200 <260 11.25 87.11 04/21/15 12.7 <1.0 <1.0 <1.0 <2.0 <5.0 49.5J <190 10.90 87.46 09/21/16 8.2 <1.0 <1.0 <1.0 <1.0 <4.0 <200 <200 11.42 86.94 04/04/18 2.8 <1.0 <1.0 <1.0 <1.0 <4.0 <200 <200 10.19 88.17 09/09/19 1.68 <1.0 <1.0 <1.0 <3.0 8.12 <500 300 13.05 85.31 06/24/21 <1.00 <1.00 <1.00 <1.00 <3.00 <5.00 <100 <100 12.03 86.33 12/05/22 13.83 84.53 09/28/23 2.21 <1.00 <1.00 <1.00 <3.00 <5.00 <100 <100 10.39 87.97 09/05/24 <1.00 <1.00 <1.00 <1.00 <3.00 <5.00 <100 <100 9.33 89.03 05/16/00 8,380 <2 <2 <2 <6 <2 <500 <500 NM -- 10/17/00 NS NS NS NS NS NS NS NS 6.78 94.01 11/20/00 NS NS NS NS NS NS NS NS 8.42 92.37 09/13/01 2,110 4.3 <2 <2 <6 <2 <500 <500 8.85 91.94 05/14/02 992 115 <10 <10 <30 <10 <500 <500 7.02 93.77 07/01/03 219 1,232 <2 <2 <6 <2 2,720 4,160 7.14 93.65 12/05/03 194 97 <2 <2 9 <2 <1,000 2,040 8.83 91.96 01/25/06 57 1,800 <100 <20 <60 <100 4,400 1,400 7.30 93.49 09/27/06 41 2,400 10 3.7 9.9 5.5 4,800 1,300 7.66 93.13 09/14/07 59 2,500 <250 <50 <150 <250 4,500 1,200 8.28 92.51 07/01/09 54 690 <120 <25 <75 <120 2,600 8,800 7.79 93.00 12/18/09 69 220 <120 <25 <75 <120 940 2,700 9.28 91.51 04/20/11 32.2 1,130 6.7 4.8 26.0 11.2 2,600 1,130 7.70 93.09 10/19/11 <20 457 <20 5.0J 26.8J <100 <2,000 2,720 7.66 93.13 04/18/12 14.2 355 <10 2.7J <20 <25 1,060 2,430 8.52 92.27 10/09/12 22.5 204 1.2J 1.3J 5.5 13.0 1,070 1,030 9.43 91.36 04/29/13 20.1 120 <2.0 1.1J 4.6 17.7 1,430 3,680 8.01 92.78 10/15/13 61.5 464 2.1 1.8J 4.5 17.0 1,310 1,290 10.18 90.61 04/11/14 23.6 106 <2.0 0.68J <3.0 6.0 594 2,080 9.28 91.51 10/09/14 39.6 158 <1.0 0.75J 1.2 4.7 603 4,860 9.00 91.79 04/21/15 27.2 94.2 0.26J 0.43J 0.72J 1.8J 658 3,930 8.75 92.04 09/22/16 18.9 29.0 <1.0 <1.0 <1.0 <4.0 245 3,530 8.47 92.32 04/04/18 22.2 45.3 <1.0 <1.0 <1.0 <4.0 563 2,030 8.63 92.16 09/09/19 19.7 30.9 0.622J 0.410J 1.34J 10.7 418J 8,120 9.43 91.36 06/24/21 105 83.0 <1.00 <1.00 <3.00 <5.00 1,100 956 9.26 91.53 12/05/22 5.77 <1.00 <1.00 <1.00 <3.00 <5.00 <100 288 11.10 89.69 09/28/23 25.3 8.82 <1.00 <1.00 <3.00 <5.00 184 749 7.68 93.11 09/05/24 6.86 6.71 <1.00 <1.00 <3.00 <5.00 612 630 5.00 95.79 MW-9 Dry When Sampling MW-8 Broadbent 748 Analytical Tables 10-21-24 Page 4 of 11 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 10,000RBCA Tier 1 SL Relative Groundwater Elevation (feet) Date DEQ ISL Depth to Groundwater (feet btoc) Concentrations (µg/L) Well No. MW-1 TABLE 1 Groundwater Monitoring and Analytical Results Flying J Travel Center No. 748 600 West 750 North, Willard, Utah 05/16/00 14,700 <2 <2 <2 <6 <2 <500 <500 NM -- 10/17/00 NS NS NS NS NS NS NS NS 5.22 91.40 11/20/00 NS NS NS NS NS NS NS NS 7.35 89.27 09/13/01 1,990 <2 <2 <2 <6 <2 <500 <500 8.61 88.01 05/14/02 1,090 <10 <10 <10 <30 <10 <500 <500 5.70 90.92 07/01/03 391 <2 <2 <2 <6 <2 <500 <500 7.15 89.47 12/05/03 251 <2 <2 <2 <6 <2 <1,000 <2,000 9.00 87.62 01/25/06 130 12 <5.0 <1.0 <3.0 <5.0 160 430 5.97 90.65 09/27/06 140 <1.0 <5.0 <1.0 <3.0 <5.0 150 <100 6.26 90.36 09/14/07 66 24 <5.0 <1.0 <3.0 <5.0 <100 <100 7.92 88.70 07/01/09 55 <1.0 <5.0 <1.0 <3.0 <5.0 <100 140 7.62 89.00 12/18/09 70 <1.0 <5.0 <1.0 <3.0 <5.0 <100 <100 8.81 87.81 04/20/11 57.3 0.44J <2.0 <2.0 <2.0 <5.0 <200 <380 4.35 92.27 10/18/11 37.8 <1.0 <2.0 <2.0 <4.0 <10 <200 <380 7.77 88.85 04/17/12 34.9 <1.0 <2.0 <2.0 <4.0 <5.0 <200 <380 7.46 89.16 10/09/12 49.7 <1.0 <2.0 <2.0 <3.0 <5.0 <200 <380 10.11 86.51 04/29/13 46.9 <1.0 <2.0 <2.0 <3.0 <5.0 <200 <190 8.19 88.43 10/15/13 45.4 <1.0 <2.0 <2.0 <3.0 <5.0 <200 <190 11.02 85.60 04/11/14 39.5 <1.0 <2.0 <2.0 <3.0 <5.0 <200 <190 8.69 87.93 10/09/14 59.8 <1.0 <1.0 <1.0 <1.0 <2.0 <200 204 9.91 86.71 04/21/15 66.3 <1.0 <1.0 <1.0 <2.0 <5.0 178 187J 9.52 87.10 09/21/16 30.5 <1.0 <1.0 <1.0 <1.0 <4.0 <200 473 11.87 84.75 04/04/18 10.7 <1.0 <1.0 <1.0 <1.0 <4.0 <200 232 10.40 86.22 09/09/19 9.81 <1.0 <1.0 <1.0 <3.0 11.8 <500 662 12.25 84.37 06/24/21 14.4 <1.00 <1.00 <1.00 <3.00 <5.00 <100 <100 12.34 84.28 12/05/22 13.98 82.64 09/28/23 3.80 <1.00 <1.00 <1.00 <3.00 <5.00 <100 <100 10.30 86.32 09/05/24 1.99 <1.00 <1.00 <1.00 <3.00 <5.00 <100 <100 9.40 87.22 05/16/00 37.4 <2 <2 <2 <6 <2 <500 <500 NM -- 10/17/00 NS NS NS NS NS NS NS NS 5.36 92.00 11/20/00 NS NS NS NS NS NS NS NS 7.32 90.04 09/13/01 443 <2 <2 <2 <6 <2 <500 <500 8.45 88.91 05/14/02 360 <5 <5 <5 <15 <5 <500 <500 5.65 91.71 07/01/03 148 <2 <2 <2 <6 <2 <500 <500 7.14 90.22 12/05/03 170 <2 <2 <2 <6 <2 <1,000 <2,000 8.81 88.55 01/25/06 35 <1.0 <5.0 <1.0 <3.0 <5.0 <100 250 5.94 91.42 09/27/06 26 <1.0 <5.0 <1.0 <3.0 <5.0 <100 <100 6.27 91.09 09/14/07 27 <1.0 <5.0 <1.0 <3.0 <5.0 <100 <100 7.72 89.64 06/30/09 6.5 <1.0 <5.0 <1.0 <3.0 <5.0 <100 <100 7.27 90.09 12/18/09 NS NS NS NS NS NS NS NS 9.15 88.21 04/20/11 22.6 <1.0 <2.0 <2.0 <2.0 <5.0 <200 <380 4.85 92.51 10/18/11 20.1 <1.0 <2.0 <2.0 <4.0 <10 <200 <380 7.93 89.43 04/17/12 11.5 <1.0 <2.0 <2.0 <4.0 <5.0 <200 NA 7.75 89.61 10/09/12 17.7 <1.0 <2.0 <2.0 <3.0 <5.0 <200 NA 10.26 87.10 04/29/13 NS NS NS NS NS NS NS NS 8.15 89.21 10/15/13 NS NS NS NS NS NS NS NS 11.37 85.99 04/11/14 NS NS NS NS NS NS NS NS 8.88 88.48 10/09/14 NS NS NS NS NS NS NS NS 10.11 87.25 04/21/15 NS NS NS NS NS NS NS NS 9.46 87.90 09/21/16 NS NS NS NS NS NS NS NS 12.20 85.16 04/04/18 NS NS NS NS NS NS NS NS 11.19 86.17 09/09/19 NS NS NS NS NS NS NS NS 12.45 84.91 06/24/21 NS NS NS NS NS NS NS NS 12.94 84.42 12/05/22 NS NS NS NS NS NS NS NS 12.93 84.43 09/28/23 NS NS NS NS NS NS NS NS 11.25 86.11 09/05/24 Well inaccessible (under parked truck) MW-10 Purged Dry MW-11 Broadbent 748 Analytical Tables 10-21-24 Page 5 of 11 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 10,000RBCA Tier 1 SL Relative Groundwater Elevation (feet) Date DEQ ISL Depth to Groundwater (feet btoc) Concentrations (µg/L) Well No. MW-1 TABLE 1 Groundwater Monitoring and Analytical Results Flying J Travel Center No. 748 600 West 750 North, Willard, Utah 05/16/00 2,130 <2 <2 <2 <6 <2 <500 <500 NM -- 10/17/00 NS NS NS NS NS NS NS NS 5.72 94.29 11/20/00 NS NS NS NS NS NS NS NS 7.54 92.47 09/16/01 425 <2 <2 <2 <6 <2 <500 <500 7.91 92.10 05/14/02 324 <5 <5 <5 <15 <5 <500 <500 6.46 93.55 07/01/03 227 14 <2 <2 <6 <2 <500 <500 6.19 93.82 12/05/03 147 <2 <2 <2 <6 <2 <1,000 <2,000 7.89 92.12 01/24/06 18 14 <5.0 <1.0 <3.0 <5.0 <100 130 5.98 94.03 09/27/06 14 48 <5.0 <1.0 <3.0 <5.0 260 180 5.94 94.07 09/14/07 13 1.8 <5.0 <1.0 <3.0 <5.0 <100 <100 7.41 92.60 06/30/09 81 19 <5.0 <1.0 <3.0 <5.0 190 610 6.76 93.25 12/18/09 160 <1.0 <5.0 <1.0 <3.0 <5.0 <100 220 8.62 91.39 04/19/11 83.5 4.3 <2.0 <2.0 <2.0 <5.0 155J <380 5.17 94.84 10/18/11 78.5 1.3 <2.0 <2.0 <4.0 <10 <200 <380 7.33 92.68 04/17/12 77.1 0.89J <2.0 <2.0 <4.0 <5.0 240 <380 7.05 92.96 10/09/12 69.9 0.47J <2.0 <2.0 <3.0 <5.0 331 <380 9.13 90.88 04/29/13 60.0 2.8 <2.0 <2.0 <3.0 <5.0 <200 171J 7.56 92.45 10/15/13 45.3 <1.0 <2.0 <2.0 <3.0 <5.0 <200 <190 9.90 90.11 04/11/14 44.7 4.9 <2.0 <2.0 <3.0 <5.0 <200 392 7.99 92.02 10/09/14 51.2 0.33J <1.0 <1.0 <1.0 1.2J <200 837 8.48 91.53 04/21/15 37.4 0.80J <1.0 <1.0 <2.0 <5.0 322 958 7.83 92.18 09/22/16 58.9 <1.0 <1.0 <1.0 <1.0 <4.0 235 2,080 7.08 92.93 04/04/18 23.2 <1.0 <1.0 <1.0 <1.0 <4.0 243 1,390 7.79 92.22 09/09/19 29.4 <1.0 <1.0 <1.0 <3.0 9.33 148J 1,980 8.59 91.42 06/24/21 12.6 <1.00 <1.00 <1.00 <3.00 <5.00 <100 <100 7.62 92.39 12/05/22 4.44 <1.00 <1.00 <1.00 <3.00 <5.00 <100 <100 10.52 89.49 09/28/23 3.21 <1.00 <1.00 <1.00 <3.00 <5.00 <100 <100 5.69 94.32 09/05/24 4.05 <1.00 <1.00 <1.00 <3.00 <5.00 142 275 3.75 96.26 05/16/00 3,110 8.6 <2 7.7 <6 <2 <500 <500 NM -- 12/05/22 9.44 90.62 09/28/23 5.03 95.03 09/05/24 2.59 97.47 05/16/00 3,610 4.9 <2 3 62.9 36.2 900 2,400 NM -- 12/05/22 9.70 90.05 09/28/23 5.33 94.42 09/05/24 2.89 96.86 MW-14 UST observation well: Not sampled during any sampling event since 5-16-00 MW-13 MW-12 UST observation well: Not sampled during any sampling event since 5-16-00 Broadbent 748 Analytical Tables 10-21-24 Page 6 of 11 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 10,000RBCA Tier 1 SL Relative Groundwater Elevation (feet) Date DEQ ISL Depth to Groundwater (feet btoc) Concentrations (µg/L) Well No. MW-1 TABLE 1 Groundwater Monitoring and Analytical Results Flying J Travel Center No. 748 600 West 750 North, Willard, Utah 10/17/00 <2 <2 <2 <2 <6 <2 <500 <500 6.54 93.75 11/20/00 NS NS NS NS NS NS NS NS 6.77 93.52 09/13/01 <2 <2 <2 <2 <6 <2 <500 <500 6.95 93.34 05/14/02 3.3 <2 <2 <2 <6 <2 <500 <500 5.69 94.60 07/01/03 <2 <2 <2 <2 <6 <2 <500 <500 6.43 93.86 12/05/03 <2 <2 <2 <2 <6 <2 <1,000 <2,000 6.95 93.34 01/25/06 NS NS NS NS NS NS NS NS 5.77 94.52 09/27/06 NS NS NS NS NS NS NS NS 6.00 94.29 09/14/07 NS NS NS NS NS NS NS NS 6.90 93.39 06/30/09 NS NS NS NS NS NS NS NS 6.36 93.93 12/18/09 NS NS NS NS NS NS NS NS 7.70 92.59 04/20/11 <2.0 <1.0 <2.0 <2.0 <2.0 <5.0 <200 <380 5.51 94.78 10/18/11 <2.0 <1.0 <2.0 <2.0 <4.0 <10 <200 NA 7.10 93.19 04/17/12 <2.0 <1.0 <2.0 <2.0 <4.0 <5.0 <200 NA 5.63 94.66 10/09/12 <2.0 <1.0 <2.0 <2.0 <3.0 <5.0 <200 NA 8.65 91.64 04/29/13 NS NS NS NS NS NS NS NS 6.73 93.56 10/15/13 NS NS NS NS NS NS NS NS 9.24 91.05 04/11/14 NS NS NS NS NS NS NS NS 6.35 93.94 10/09/14 NS NS NS NS NS NS NS NS 7.09 93.20 04/21/15 NS NS NS NS NS NS NS NS 6.76 93.53 09/21/16 NS NS NS NS NS NS NS NS 7.33 92.96 04/04/18 NS NS NS NS NS NS NS NS 6.78 93.51 09/09/19 NS NS NS NS NS NS NS NS 6.69 93.60 06/24/21 NS NS NS NS NS NS NS NS 5.98 94.31 12/05/22 NS NS NS NS NS NS NS NS 6.74 93.55 09/28/23 NS NS NS NS NS NS NS NS 5.34 94.95 09/05/24 NS NS NS NS NS NS NS NS 4.20 96.09 10/17/00 <2 <2 <2 <2 <6 <2 <500 <500 6.82 93.47 11/20/00 NS NS NS NS NS NS NS NS 7.20 93.09 09/13/01 <2 <2 <2 <2 <6 <2 <500 <500 7.36 92.93 05/14/02 15.7 <2 <2 <2 <6 <2 <500 <500 6.15 94.14 07/01/03 <2 <2 <2 <2 <6 <2 <500 <500 6.19 94.10 12/05/03 <2 <2 <2 <2 <6 <2 <1,000 <2,000 7.42 92.87 01/24/06 <1.0 <1.0 <5.0 <1.0 <3.0 <5.0 <100 <100 5.83 94.46 09/27/06 <1.0 <1.0 <5.0 <1.0 <3.0 <5.0 <100 110 6.22 94.07 09/14/07 NS NS NS NS NS NS NS NS 7.34 92.95 06/30/09 NS NS NS NS NS NS NS NS 6.49 93.80 12/18/09 NS NS NS NS NS NS NS NS 8.32 91.97 04/19/11 <2.0 <1.0 <2.0 <2.0 <2.0 <5.0 <200 259J 4.94 95.35 10/18/11 <2.0 <1.0 <2.0 <2.0 <4.0 <10 <200 NA 7.46 92.83 04/17/12 NS NS NS NS NS NS NS NS 6.80 93.49 10/09/12 NS NS NS NS NS NS NS NS 9.23 91.06 04/29/13 NS NS NS NS NS NS NS NS 7.32 92.97 10/15/13 NS NS NS NS NS NS NS NS 9.95 90.34 04/11/14 NS NS NS NS NS NS NS NS 7.46 92.83 10/09/14 NS NS NS NS NS NS NS NS 8.35 91.94 04/21/15 NS NS NS NS NS NS NS NS 7.81 92.48 09/22/16 NS NS NS NS NS NS NS NS 8.61 91.68 04/04/18 NS NS NS NS NS NS NS NS 7.28 93.01 09/09/19 NS NS NS NS NS NS NS NS 7.74 92.55 06/24/21 NS NS NS NS NS NS NS NS 7.28 93.01 12/05/22 NS NS NS NS NS NS NS NS NM -- 09/28/23 NS NS NS NS NS NS NS NS NM -- 09/05/24 NS NS NS NS NS NS NS NS NM -- MW-15 MW-16 Broadbent 748 Analytical Tables 10-21-24 Page 7 of 11 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 10,000RBCA Tier 1 SL Relative Groundwater Elevation (feet) Date DEQ ISL Depth to Groundwater (feet btoc) Concentrations (µg/L) Well No. MW-1 TABLE 1 Groundwater Monitoring and Analytical Results Flying J Travel Center No. 748 600 West 750 North, Willard, Utah 10/17/00 <2 <2 <2 <2 <6 <2 <500 <500 8.00 92.04 11/20/00 NS NS NS NS NS NS NS NS 8.37 91.67 09/13/01 NS NS NS NS NS NS NS NS 8.77 91.27 05/14/02 NS NS NS NS NS NS NS NS 7.01 93.03 07/01/03 <2 <2 <2 <2 <6 <2 <500 <500 8.02 92.02 12/05/03 NS NS NS NS NS NS NS NS NM NM 01/24/06 <1.0 <1.0 <5.0 <1.0 <3.0 <5.0 <100 <100 6.73 93.31 09/27/06 <1.0 <1.0 <5.0 <1.0 <3.0 <5.0 <100 <100 7.68 92.36 09/14/07 NS NS NS NS NS NS NS NS 8.75 91.29 06/30/09 NS NS NS NS NS NS NS NS 8.11 91.93 12/18/09 NS NS NS NS NS NS NS NS NM -- 10/17/00 <2 55.8 24.8 <2 <6 6.2 <500 <500 6.22 92.21 11/20/00 NS NS NS NS NS NS NS NS 7.05 91.38 09/13/01 66.2 8.6 <2 <2 <6 <2 <500 <500 7.24 91.19 05/14/02 202 62.4 <2 2 <6 13.9 <500 <500 5.25 93.18 07/01/03 86 20 <2 2 <6 2 <500 <500 5.47 92.96 12/05/03 51 4 <2 2 <6 2 <1,000 <2,000 7.55 90.88 01/24/06 27 5.6 <5.0 <1.0 <3.0 <5.0 <100 <100 5.87 92.56 09/27/06 44 <1.0 <5.0 <1.0 <3.0 <5.0 160 <100 5.48 92.95 09/14/07 55 1.7 <5.0 <1.0 <3.0 <5.0 <100 <100 6.84 91.59 06/30/09 31 1 <5.0 <1.0 <3.0 <5.0 <100 100 6.32 92.11 12/18/09 43 <1.0 <5.0 <1.0 <3.0 <5.0 <100 <100 8.31 90.12 04/19/11 11.6 2.1 <2.0 <2.0 <2.0 <5.0 <200 NA 3.52 94.91 10/18/11 48.2 <1.0 <2.0 <2.0 <4.0 <10 <200 NA 6.81 91.62 04/17/12 78.1 11.5 <2.0 <2.0 <4.0 <5.0 <200 NA 7.12 91.31 10/09/12 96.6 <1.0 <2.0 <2.0 <3.0 <5.0 <200 NA 8.67 89.76 04/29/13 35.7 1.8 <2.0 <2.0 <3.0 <5.0 <200 NA 7.03 91.40 10/15/13 111 <1.0 <2.0 <2.0 <3.0 <5.0 <200 NA 9.30 89.13 04/11/14 200 73.1 <2.0 0.58J <3.0 3.5J 318 NA 7.87 90.56 10/09/14 307 0.53J <1.0 <1.0 <1.0 1.3J 401 NA 8.80 89.63 04/21/15 131 <1.0 <1.0 <1.0 <2.0 <5.0 275 NA 8.24 90.19 09/22/16 180 0.69J <1.0 <1.0 <1.0 <4.0 273 NA 6.45 91.98 04/04/18 58.3 <1.0 <1.0 <1.0 <1.0 <4.0 <200 NA 7.75 90.68 09/09/19 125 <1.0 <1.0 <1.0 <3.0 7.77 191J NA 8.88 89.55 06/24/21 167 101 <1.00 <1.00 <3.00 43.4 527 612 7.73 90.70 12/05/22 59.3 <1.00 <1.00 <1.00 <3.00 <5.00 <100 <100 10.58 87.85 09/28/23 55.3 4.08 <1.00 <1.00 <3.00 <5.00 134 <100 5.92 92.51 09/05/24 128 <1.00 <1.00 <1.00 <3.00 <5.00 171 134 5.94 92.49 MW-18 Well not found for any event since 4-19-11 MW-17 Broadbent 748 Analytical Tables 10-21-24 Page 8 of 11 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 10,000RBCA Tier 1 SL Relative Groundwater Elevation (feet) Date DEQ ISL Depth to Groundwater (feet btoc) Concentrations (µg/L) Well No. MW-1 TABLE 1 Groundwater Monitoring and Analytical Results Flying J Travel Center No. 748 600 West 750 North, Willard, Utah 10/17/00 12.3 <2 <2 <2 <6 4.5 <500 <500 7.22 90.33 11/20/00 NS NS NS NS NS NS NS NS 7.98 89.57 09/13/01 50.9 <2 <2 <2 <6 <2 <500 <500 8.57 88.98 05/14/02 NS NS NS NS NS NS NS NS 5.97 91.58 07/01/03 79 <2 <2 <2 <6 <2 <500 <500 6.96 90.59 12/05/03 38 <2 <2 <2 <6 <2 <1,000 <2,000 9.03 88.52 01/25/06 <1.0 <1.0 <5.0 <1.0 <3.0 <5.0 <100 380 6.05 91.50 09/27/06 1.2 <1.0 <5.0 <1.0 <3.0 <5.0 <100 <100 6.40 91.15 09/14/07 6.1 <1.0 <5.0 <1.0 <3.0 <5.0 <100 <100 7.93 89.62 06/30/09 2.5 <1.0 <5.0 <1.0 <3.0 <5.0 <100 <100 7.92 89.63 12/18/09 NS NS NS NS NS NS NS NS 9.38 88.17 04/20/11 3.2 <1.0 <2.0 <2.0 <2.0 <5.0 <200 NA 4.08 93.47 10/18/11 5.7 <1.0 <2.0 <2.0 <4.0 <10 <200 <380 7.80 89.75 04/17/12 18.2 <1.0 <2.0 <2.0 <4.0 <5.0 <200 251J 8.32 89.23 10/09/12 39.1 <1.0 <2.0 <2.0 <3.0 <5.0 <200 <380 9.94 87.61 04/29/13 NS NS NS NS NS NS NS NS 8.30 89.25 10/15/13 NS NS NS NS NS NS NS NS 10.42 87.13 04/11/14 NS NS NS NS NS NS NS NS 9.03 88.52 10/09/14 NS NS NS NS NS NS NS NS 10.10 87.45 04/21/15 NS NS NS NS NS NS NS NS 9.66 87.89 09/22/16 NS NS NS NS NS NS NS NS 7.23 90.32 04/04/18 NS NS NS NS NS NS NS NS 9.50 88.05 09/09/19 NS NS NS NS NS NS NS NS 11.20 86.35 06/24/21 NS NS NS NS NS NS NS NS 10.33 87.22 12/05/22 NS NS NS NS NS NS NS NS 11.20 86.35 09/28/23 NM -- 09/05/24 NS NS NS NS NS NS NS NS 8.02 89.53 10/17/00 6.7 <2 <2 <2 <6 <2 <500 <500 6.16 87.47 11/20/00 NS NS NS NS NS NS NS NS 5.39 88.24 09/13/01 113 <2 <2 <2 <6 <2 <500 <500 10.50 83.13 05/14/02 14.4 <2 <2 <2 <6 <2 <500 <500 6.67 86.96 07/01/03 24 <2 <2 <2 <6 <2 <500 <500 5.35 88.28 12/05/03 5 <2 <2 <2 <6 <2 <1,000 <2,000 8.15 85.48 01/25/06 <1.0 <1.0 <5.0 <1.0 <3.0 <5.0 <100 510 5.99 87.64 09/27/06 <1.0 <1.0 <5.0 <1.0 <3.0 <5.0 <100 430 6.34 87.29 09/14/07 <1.0 <1.0 <5.0 <1.0 <3.0 <5.0 <100 810 8.92 84.71 07/01/09 <1.0 <1.0 <5.0 <1.0 <3.0 <5.0 <100 390 8.81 84.82 12/18/09 <1.0 <1.0 <5.0 <1.0 <3.0 <5.0 <100 <100 4.00 89.63 04/19/11 NS NS NS NS NS NS NS NS NM -- 10/18/11 NM -- 04/17/12 NS NS NS NS NS NS NS NS 3.93 89.70 10/09/12 NS NS NS NS NS NS NS NS NM -- 04/29/13 NS NS NS NS NS NS NS NS 9.02 84.61 10/15/13 NS NS NS NS NS NS NS NS 9.94 83.69 04/11/14 NS NS NS NS NS NS NS NS 7.40 86.23 10/09/14 NS NS NS NS NS NS NS NS 8.98 84.65 04/21/15 NS NS NS NS NS NS NS NS 8.57 85.06 09/22/16 NS NS NS NS NS NS NS NS 04/04/18 NS NS NS NS NS NS NS NS 7.18 86.45 09/09/19 NS NS NS NS NS NS NS NS 10.80 82.83 06/24/21 NM -- 12/05/22 NM -- 09/28/23 NM -- 09/05/24 NM -- Well not found Well not found MW-19 Well not found MW-20 Well not found Well not found Well Not Found Bee hive in well- not gauged Broadbent 748 Analytical Tables 10-21-24 Page 9 of 11 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 10,000RBCA Tier 1 SL Relative Groundwater Elevation (feet) Date DEQ ISL Depth to Groundwater (feet btoc) Concentrations (µg/L) Well No. MW-1 TABLE 1 Groundwater Monitoring and Analytical Results Flying J Travel Center No. 748 600 West 750 North, Willard, Utah 10/17/00 7.1 <2 <2 <2 <6 <2 <500 <500 7.51 91.59 11/20/00 NS NS NS NS NS NS NS NS 7.70 91.40 09/13/01 <2 <2 <2 <2 <6 <2 <500 <500 8.51 90.59 05/14/02 8.4 <2 <2 <2 <6 <2 <500 <500 5.91 93.19 07/01/03 <2 <2 <2 <2 <6 <2 <500 <500 7.20 91.90 12/05/03 <2 <2 3 <2 <6 <2 <1,000 <2,000 8.70 90.40 01/25/06 <1.0 <1.0 <5.0 <1.0 <3.0 <5.0 <100 <100 6.15 92.95 09/27/06 <1.0 <1.0 <5.0 <1.0 <3.0 <5.0 <100 <100 6.32 92.78 09/14/07 <1.0 <1.0 <5.0 <1.0 <3.0 <5.0 <100 <100 7.86 91.24 06/30/09 <1.0 <1.0 <5.0 <1.0 <3.0 <5.0 <100 <100 6.96 92.14 12/18/09 NS NS NS NS NS NS NS NS 8.98 90.12 04/20/11 <2.0 <1.0 <2.0 0.31J <2.0 <5.0 <200 NA 5.28 93.82 10/18/11 <2.0 <1.0 <2.0 <2.0 <4.0 <10 <200 NA 7.83 91.27 04/17/12 <2.0 <1.0 <2.0 <2.0 <4.0 <5.0 <200 NA 7.58 91.52 10/09/12 <2.0 <1.0 <2.0 <2.0 <3.0 <5.0 <200 NA 9.65 89.45 04/29/13 <2.0 <1.0 <2.0 <2.0 <3.0 <5.0 <200 NA 7.67 91.43 10/15/13 <2.0 <1.0 <2.0 <2.0 <3.0 <5.0 <200 NA 10.27 88.83 04/11/14 <2.0 <1.0 <2.0 <2.0 <3.0 <5.0 <200 NA 7.94 91.16 10/09/14 <1.0 <1.0 <1.0 <1.0 <1.0 <2.0 <200 NA 9.08 90.02 04/21/15 <1.0 <1.0 <1.0 <1.0 <2.0 <5.0 <50 NA 8.38 90.72 09/21/16 <1.0 <1.0 <1.0 <1.0 <1.0 <4.0 <200 NA 9.64 89.46 04/04/18 <1.0 <1.0 <1.0 <1.0 <1.0 <4.0 <200 NA 8.50 90.60 09/09/19 1.53 0.353J <1.0 <1.0 <3.0 10.5 <500 NA 9.55 89.55 06/24/21 <1.00 <1.00 <1.00 <1.00 <3.00 <5.00 <100 <100 9.36 89.74 12/05/22 <1.00 <1.00 <1.00 <1.00 <3.00 <5.00 <100 <100 10.75 88.35 09/28/23 <1.00 <1.00 <1.00 <1.00 <3.00 <5.00 <100 <100 8.65 90.45 09/05/24 <1.00 <1.00 <1.00 <1.00 <3.00 <5.00 <100 <100 7.00 92.10 12/05/03 87 <2 <2 <2 <6 <2 <1,000 <2,000 11.51 87.85 01/24/06 36 <1.0 <5.0 <1.0 <3.0 <5.0 170 <100 8.57 90.79 09/27/06 NS NS NS NS NS NS NS NS 9.22 90.14 12/05/03 1,075 <2 <2 <2 <6 <2 <1,000 <2,000 17.03 84.51 01/24/06 21 <1.0 <5.0 <1.0 <3.0 <5.0 <100 <100 14.37 87.17 09/27/06 8.8 <1.0 <5.0 <1.0 <3.0 <5.0 <100 <100 15.34 86.20 09/14/07 28 <1.0 <5.0 <1.0 <3.0 <5.0 <100 <100 16.70 84.84 06/30/09 7.9 <1.0 <5.0 <1.0 <3.0 <5.0 <100 <100 16.82 84.72 12/18/09 22 <1.0 <5.0 <1.0 <3.0 <5.0 <100 <100 16.58 84.96 12/05/03 120 <2 <2 <2 <6 <2 <1,000 <2,000 18.65 82.22 01/25/06 21 <1.0 <5.0 <1.0 <3.0 <5.0 <100 <100 17.01 83.86 09/27/06 8 <1.0 <5.0 <1.0 <3.0 <5.0 <100 160 17.82 83.05 09/14/07 17 <1.0 <5.0 <1.0 <3.0 <5.0 <100 <100 19.49 81.38 06/30/09 <1.0 <1.0 <5.0 <1.0 <3.0 <5.0 <100 <100 19.52 81.35 12/18/09 NS NS NS NS NS NS NS NS NM -- MW-24 Wellhead destroyed, well full of silt, unusable (observed 4-19-11) MW-21 MW-22 Well not found for any event since 4-19-11 Well not found for any event since 4-19-11 MW-23 Broadbent 748 Analytical Tables 10-21-24 Page 10 of 11 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 10,000RBCA Tier 1 SL Relative Groundwater Elevation (feet) Date DEQ ISL Depth to Groundwater (feet btoc) Concentrations (µg/L) Well No. MW-1 TABLE 1 Groundwater Monitoring and Analytical Results Flying J Travel Center No. 748 600 West 750 North, Willard, Utah 12/05/03 <2 <2 <2 <2 <6 <2 <1,000 <2,000 12.11 78.20 01/25/06 <1.0 <1.0 <5.0 <1.0 <3.0 <5.0 <100 <100 10.20 80.11 09/27/06 <1.0 <1.0 <5.0 <1.0 <3.0 <5.0 <100 110 10.85 79.46 09/14/07 1.2 <1.0 <5.0 <1.0 <3.0 <5.0 <100 <100 12.57 77.74 06/30/09 <1.0 <1.0 <5.0 <1.0 <3.0 <5.0 <100 <100 14.81 75.50 12/18/09 NS NS NS NS NS NS NS NS NM -- Abbreviations and Notes: Well No. Total Well Depth (feet) Screened Interval (feet) Top of Casing Elevation (feet) µg/L = micrograms per liter MW-1 14.5 4.5 to 14.5 99.08 MTBE = methyl tertiary butyl ether MW-2 14.5 4.5 to 14.5 98.94 TPH-GRO = gasoline-range total petroleum hydrocarbons MW-3 14.1 4.1 to 14.1 99.77 TPH-DRO = diesel-range total petroleum hydrocarbons MW-5 14.0 4.0 to 14.0 95.03 btoc = below top of casing MW-6 14.6 4.6 to 14.6 96.63 <= analyte concentration is below the specified practical quantitation limit MW-7 15 5 to 15 94.37 NM = not measured MW-8 14.7 4.7 to 14.7 98.36 NS = not sampled MW-9 14.4 4.4 to 14.4 100.79 NA = not analyzed MW-10 14.6 4.6 to 14.6 96.62 DEQ = Department of Environmental Quality MW-11 14.5 4.5 to 14.5 97.36 ISL = Initial Screening Level MW-12 14.7 4.7 to 14.7 100.01 RBCA = Risk-Based Corrective Action MW-13 100.06 SL = screening level MW-14 99.75 J = value is between laboratory reporting limit and minimum detection limit MW-15 14.2 4.2 to 14.2 100.29 bold = sample result exceeds DEQ ISLs MW-16 14.0 4.0 to 14.0 100.29 MW-17 15 5 to 15 100.04 MW-18 13.9 3.9 to 13.9 98.43 a MW-19 14.5 4.5 to 14.5 97.55 MW-20 15 5 to 15 93.63 On 4-11-14, a sheen was detected in well MW-3.MW-21 14.0 4.0 to 14.0 99.10 MW-22 20 5 to 20 99.36 Note: all screened intervals and depths were remeasured in April MW-23 25 10 to 25 101.54 2011, except for wells with depths listed as 15, 20 and 25 ft bgs.MW-24 25 10 to 25 100.87 Data for these wells was taken from original well logs.MW-25 20 5 to 20 90.31 MW-25 = MW-2 had 0.02 ft LNAPL measured on 10-9-12 (verified by bailer). On 10-10-12, only a sheen was detected so well was sampled. UST well UST well Well not found for any event since 4-19-11 Broadbent 748 Analytical Tables 10-21-24 Page 11 of 11 4.0 5.0 6.0 7.0 8.0 9.0 10.0 11.0 12.00 50 100 150 200 250 Se p - 0 5 Se p - 0 7 Se p - 0 9 Se p - 1 1 Se p - 1 3 Se p - 1 5 Se p - 1 7 Se p - 1 9 Se p - 2 1 Se p - 2 3 Se p - 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. 748 Benzene Depth to Groundwater 4.0 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 Se p - 9 9 Se p - 0 1 Se p - 0 3 Se p - 0 5 Se p - 0 7 Se p - 0 9 Se p - 1 1 Se p - 1 3 Se p - 1 5 Se p - 1 7 Se p - 1 9 Se p - 2 1 Se p - 2 3 Se p - 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-DRO Concentration vs. Time Flying J Travel Center No. 748 TPH-DRO Depth to Groundwater Page 1 of 3 4.0 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 Se p - 9 9 Se p - 0 1 Se p - 0 3 Se p - 0 5 Se p - 0 7 Se p - 0 9 Se p - 1 1 Se p - 1 3 Se p - 1 5 Se p - 1 7 Se p - 1 9 Se p - 2 1 Se p - 2 3 Se p - 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-9 Benzene Concentration vs. Time Flying J Travel Center No. 748 Benzene Depth to Groundwater 4.0 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 Se p - 9 9 Se p - 0 1 Se p - 0 3 Se p - 0 5 Se p - 0 7 Se p - 0 9 Se p - 1 1 Se p - 1 3 Se p - 1 5 Se p - 1 7 Se p - 1 9 Se p - 2 1 Se p - 2 3 Se p - 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-9 TPH-GRO Concentration vs. Time Flying J Travel Center No. 748 TPH-GRO Depth to Groundwater Page 2 of 3 3.0 4.0 5.0 6.0 7.0 8.0 9.0 10.0 11.00 20 40 60 80 100 120 Se p - 9 9 Se p - 0 1 Se p - 0 3 Se p - 0 5 Se p - 0 7 Se p - 0 9 Se p - 1 1 Se p - 1 3 Se p - 1 5 Se p - 1 7 Se p - 1 9 Se p - 2 1 Se p - 2 3 Se p - 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-18 Benzene Concentration vs. Time Flying J Travel Center No. 748 Benzene 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 16, 2024 Broadbent & Associates - UT Pilot Sample Delivery Group:L1775344 Samples Received:09/07/2024 Project Number:748-605-13 Description:Flying J 748 - Willard, UT Site:19-14-106 Report To:Aric Morton 186 E. Main Street #99 Sandy, UT 84070 Entire Report Reviewed By: September 16, 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 748-605-13 L1775344 09/16/24 20:31 1 of 20 September 17, 2024 Jeff Carr Project Manager ACCOUNT:PROJECT:SDG:DATE/TIME:PAGE: Broadbent & Associates - UT Pilot 748-605-13 L1775344 09/17/24 06:34 1 of 20 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 L1775344-01 6 MW-2 L1775344-02 7 MW-3 L1775344-03 8 MW-8 L1775344-04 9 MW-9 L1775344-05 10 MW-10 L1775344-06 11 MW-12 L1775344-07 12 MW-18 L1775344-08 13 MW-21 L1775344-09 14 Qc: Quality Control Summary 15 Volatile Organic Compounds (GC) by Method 8015D/GRO 15 Volatile Organic Compounds (GC/MS) by Method 8260B 16 Semi-Volatile Organic Compounds (GC) by Method 3511/8015 17 Gl: Glossary of Terms 18 Al: Accreditations & Locations 19 Sc: Sample Chain of Custody 20 1 Cp 2 Tc 3 Ss 4 Cn 5 Sr 6 Qc 7 Gl 8 Al 9 Sc ACCOUNT:PROJECT:SDG:DATE/TIME:PAGE: Broadbent & Associates - UT Pilot 748-605-13 L1775344 09/16/24 20:31 2 of 20 ACCOUNT:PROJECT:SDG:DATE/TIME:PAGE: Broadbent & Associates - UT Pilot 748-605-13 L1775344 09/17/24 06:34 2 of 20 SAMPLE SUMMARY Collected by Collected date/time Received date/time MW-1 L1775344-01 GW Sarah Hamilton 09/05/24 13:05 09/07/24 09:00 Method Batch Dilution Preparation Analysis Analyst Location date/time date/time Volatile Organic Compounds (GC) by Method 8015D/GRO WG2360275 1 09/11/24 14:45 09/11/24 14:45 DWR Mt. Juliet, TN Volatile Organic Compounds (GC/MS) by Method 8260B WG2361158 1 09/12/24 10:34 09/12/24 10:34 JTO Mt. Juliet, TN Semi-Volatile Organic Compounds (GC) by Method 3511/8015 WG2362483 1 09/14/24 11:09 09/14/24 19:07 DMG Mt. Juliet, TN Collected by Collected date/time Received date/time MW-2 L1775344-02 GW Sarah Hamilton 09/05/24 11:30 09/07/24 09:00 Method Batch Dilution Preparation Analysis Analyst Location date/time date/time Volatile Organic Compounds (GC) by Method 8015D/GRO WG2360275 1 09/11/24 15:09 09/11/24 15:09 DWR Mt. Juliet, TN Volatile Organic Compounds (GC/MS) by Method 8260B WG2361158 1 09/12/24 10:54 09/12/24 10:54 JTO Mt. Juliet, TN Semi-Volatile Organic Compounds (GC) by Method 3511/8015 WG2362483 1 09/14/24 11:09 09/14/24 19:27 DMG Mt. Juliet, TN Collected by Collected date/time Received date/time MW-3 L1775344-03 GW Sarah Hamilton 09/05/24 12:15 09/07/24 09:00 Method Batch Dilution Preparation Analysis Analyst Location date/time date/time Volatile Organic Compounds (GC) by Method 8015D/GRO WG2360275 1 09/11/24 15:33 09/11/24 15:33 DWR Mt. Juliet, TN Volatile Organic Compounds (GC/MS) by Method 8260B WG2361158 1 09/12/24 11:15 09/12/24 11:15 JTO Mt. Juliet, TN Semi-Volatile Organic Compounds (GC) by Method 3511/8015 WG2362483 1 09/14/24 11:09 09/14/24 19:47 DMG Mt. Juliet, TN Collected by Collected date/time Received date/time MW-8 L1775344-04 GW Sarah Hamilton 09/05/24 16:15 09/07/24 09:00 Method Batch Dilution Preparation Analysis Analyst Location date/time date/time Volatile Organic Compounds (GC) by Method 8015D/GRO WG2360275 1 09/11/24 15:57 09/11/24 15:57 DWR Mt. Juliet, TN Volatile Organic Compounds (GC/MS) by Method 8260B WG2361158 1 09/12/24 11:36 09/12/24 11:36 JTO Mt. Juliet, TN Semi-Volatile Organic Compounds (GC) by Method 3511/8015 WG2362483 1 09/14/24 11:09 09/14/24 20:06 DMG Mt. Juliet, TN Collected by Collected date/time Received date/time MW-9 L1775344-05 GW Sarah Hamilton 09/05/24 10:15 09/07/24 09:00 Method Batch Dilution Preparation Analysis Analyst Location date/time date/time Volatile Organic Compounds (GC) by Method 8015D/GRO WG2360275 1 09/11/24 16:21 09/11/24 16:21 DWR Mt. Juliet, TN Volatile Organic Compounds (GC/MS) by Method 8260B WG2361158 1 09/12/24 11:57 09/12/24 11:57 JTO Mt. Juliet, TN Semi-Volatile Organic Compounds (GC) by Method 3511/8015 WG2362483 1 09/14/24 11:09 09/14/24 20:26 DMG Mt. Juliet, TN Collected by Collected date/time Received date/time MW-10 L1775344-06 GW Sarah Hamilton 09/05/24 14:05 09/07/24 09:00 Method Batch Dilution Preparation Analysis Analyst Location date/time date/time Volatile Organic Compounds (GC) by Method 8015D/GRO WG2360275 1 09/11/24 16:46 09/11/24 16:46 DWR Mt. Juliet, TN Volatile Organic Compounds (GC/MS) by Method 8260B WG2361158 1 09/12/24 12:18 09/12/24 12:18 JTO Mt. Juliet, TN Semi-Volatile Organic Compounds (GC) by Method 3511/8015 WG2362483 1 09/14/24 11:09 09/14/24 22:06 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 748-605-13 L1775344 09/16/24 20:31 3 of 20 ACCOUNT:PROJECT:SDG:DATE/TIME:PAGE: Broadbent & Associates - UT Pilot 748-605-13 L1775344 09/17/24 06:34 3 of 20 SAMPLE SUMMARY Collected by Collected date/time Received date/time MW-12 L1775344-07 GW Sarah Hamilton 09/05/24 09:40 09/07/24 09:00 Method Batch Dilution Preparation Analysis Analyst Location date/time date/time Volatile Organic Compounds (GC) by Method 8015D/GRO WG2360275 1 09/11/24 17:10 09/11/24 17:10 DWR Mt. Juliet, TN Volatile Organic Compounds (GC/MS) by Method 8260B WG2361158 1 09/12/24 14:03 09/12/24 14:03 JTO Mt. Juliet, TN Semi-Volatile Organic Compounds (GC) by Method 3511/8015 WG2362483 1 09/14/24 11:09 09/14/24 22:26 DMG Mt. Juliet, TN Collected by Collected date/time Received date/time MW-18 L1775344-08 GW Sarah Hamilton 09/05/24 09:10 09/07/24 09:00 Method Batch Dilution Preparation Analysis Analyst Location date/time date/time Volatile Organic Compounds (GC) by Method 8015D/GRO WG2360275 1 09/11/24 17:34 09/11/24 17:34 DWR Mt. Juliet, TN Volatile Organic Compounds (GC/MS) by Method 8260B WG2361158 1 09/12/24 14:24 09/12/24 14:24 JTO Mt. Juliet, TN Semi-Volatile Organic Compounds (GC) by Method 3511/8015 WG2362483 1 09/14/24 11:09 09/14/24 22:46 DMG Mt. Juliet, TN Collected by Collected date/time Received date/time MW-21 L1775344-09 GW Sarah Hamilton 09/05/24 13:30 09/07/24 09:00 Method Batch Dilution Preparation Analysis Analyst Location date/time date/time Volatile Organic Compounds (GC) by Method 8015D/GRO WG2360275 1 09/11/24 17:58 09/11/24 17:58 DWR Mt. Juliet, TN Volatile Organic Compounds (GC/MS) by Method 8260B WG2361158 1 09/12/24 14:45 09/12/24 14:45 JTO Mt. Juliet, TN Semi-Volatile Organic Compounds (GC) by Method 3511/8015 WG2362483 1 09/14/24 11:09 09/14/24 23:06 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 748-605-13 L1775344 09/16/24 20:31 4 of 20 ACCOUNT:PROJECT:SDG:DATE/TIME:PAGE: Broadbent & Associates - UT Pilot 748-605-13 L1775344 09/17/24 06:34 4 of 20 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 748-605-13 L1775344 09/16/24 20:31 5 of 20 Jeff Carr Project Manager ACCOUNT:PROJECT:SDG:DATE/TIME:PAGE: Broadbent & Associates - UT Pilot 748-605-13 L1775344 09/17/24 06:34 5 of 20 SAMPLE RESULTS - 01 L1775344 MW-1 Collected date/time: 09/05/24 13:05 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 141 B 100 1 09/11/2024 14:45 WG2360275 (S) a,a,a-Trifluorotoluene(FID)95.7 78.0-120 09/11/2024 14:45 WG2360275 Volatile Organic Compounds (GC/MS) by Method 8260B Result Qualifier RDL Dilution Analysis Batch Analyte ug/l ug/l date / time Benzene 13.5 1.00 1 09/12/2024 10:34 WG2361158 Toluene ND 1.00 1 09/12/2024 10:34 WG2361158 Ethylbenzene ND 1.00 1 09/12/2024 10:34 WG2361158 Total Xylenes ND 3.00 1 09/12/2024 10:34 WG2361158 Methyl tert-butyl ether 5.98 1.00 1 09/12/2024 10:34 WG2361158 Naphthalene ND 5.00 1 09/12/2024 10:34 WG2361158 (S) Toluene-d8 103 80.0-120 09/12/2024 10:34 WG2361158 (S) 4-Bromofluorobenzene 95.1 77.0-126 09/12/2024 10:34 WG2361158 (S) 1,2-Dichloroethane-d4 104 70.0-130 09/12/2024 10:34 WG2361158 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 738 100 1 09/14/2024 19:07 WG2362483 (S) o-Terphenyl 74.2 52.0-156 09/14/2024 19:07 WG2362483 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 748-605-13 L1775344 09/16/24 20:31 6 of 20 ACCOUNT:PROJECT:SDG:DATE/TIME:PAGE: Broadbent & Associates - UT Pilot 748-605-13 L1775344 09/17/24 06:34 6 of 20 SAMPLE RESULTS - 02 L1775344 MW-2 Collected date/time: 09/05/24 11:30 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 ND 100 1 09/11/2024 15:09 WG2360275 (S) a,a,a-Trifluorotoluene(FID)95.7 78.0-120 09/11/2024 15:09 WG2360275 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 09/12/2024 10:54 WG2361158 Toluene ND 1.00 1 09/12/2024 10:54 WG2361158 Ethylbenzene ND 1.00 1 09/12/2024 10:54 WG2361158 Total Xylenes ND 3.00 1 09/12/2024 10:54 WG2361158 Methyl tert-butyl ether ND 1.00 1 09/12/2024 10:54 WG2361158 Naphthalene ND 5.00 1 09/12/2024 10:54 WG2361158 (S) Toluene-d8 104 80.0-120 09/12/2024 10:54 WG2361158 (S) 4-Bromofluorobenzene 99.4 77.0-126 09/12/2024 10:54 WG2361158 (S) 1,2-Dichloroethane-d4 105 70.0-130 09/12/2024 10:54 WG2361158 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 351 100 1 09/14/2024 19:27 WG2362483 (S) o-Terphenyl 74.2 52.0-156 09/14/2024 19:27 WG2362483 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 748-605-13 L1775344 09/16/24 20:31 7 of 20 ACCOUNT:PROJECT:SDG:DATE/TIME:PAGE: Broadbent & Associates - UT Pilot 748-605-13 L1775344 09/17/24 06:34 7 of 20 SAMPLE RESULTS - 03 L1775344 MW-3 Collected date/time: 09/05/24 12:15 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 117 B 100 1 09/11/2024 15:33 WG2360275 (S) a,a,a-Trifluorotoluene(FID)95.4 78.0-120 09/11/2024 15:33 WG2360275 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 09/12/2024 11:15 WG2361158 Toluene ND 1.00 1 09/12/2024 11:15 WG2361158 Ethylbenzene ND 1.00 1 09/12/2024 11:15 WG2361158 Total Xylenes ND 3.00 1 09/12/2024 11:15 WG2361158 Methyl tert-butyl ether 9.46 1.00 1 09/12/2024 11:15 WG2361158 Naphthalene ND 5.00 1 09/12/2024 11:15 WG2361158 (S) Toluene-d8 102 80.0-120 09/12/2024 11:15 WG2361158 (S) 4-Bromofluorobenzene 97.1 77.0-126 09/12/2024 11:15 WG2361158 (S) 1,2-Dichloroethane-d4 102 70.0-130 09/12/2024 11:15 WG2361158 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 633 100 1 09/14/2024 19:47 WG2362483 (S) o-Terphenyl 82.1 52.0-156 09/14/2024 19:47 WG2362483 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 748-605-13 L1775344 09/16/24 20:31 8 of 20 ACCOUNT:PROJECT:SDG:DATE/TIME:PAGE: Broadbent & Associates - UT Pilot 748-605-13 L1775344 09/17/24 06:34 8 of 20 SAMPLE RESULTS - 04 L1775344 MW-8 Collected date/time: 09/05/24 16:15 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 09/11/2024 15:57 WG2360275 (S) a,a,a-Trifluorotoluene(FID)95.1 78.0-120 09/11/2024 15:57 WG2360275 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 09/12/2024 11:36 WG2361158 Toluene ND 1.00 1 09/12/2024 11:36 WG2361158 Ethylbenzene ND 1.00 1 09/12/2024 11:36 WG2361158 Total Xylenes ND 3.00 1 09/12/2024 11:36 WG2361158 Methyl tert-butyl ether ND 1.00 1 09/12/2024 11:36 WG2361158 Naphthalene ND 5.00 1 09/12/2024 11:36 WG2361158 (S) Toluene-d8 103 80.0-120 09/12/2024 11:36 WG2361158 (S) 4-Bromofluorobenzene 96.1 77.0-126 09/12/2024 11:36 WG2361158 (S) 1,2-Dichloroethane-d4 103 70.0-130 09/12/2024 11:36 WG2361158 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 09/14/2024 20:06 WG2362483 (S) o-Terphenyl 66.8 52.0-156 09/14/2024 20:06 WG2362483 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 748-605-13 L1775344 09/16/24 20:31 9 of 20 ACCOUNT:PROJECT:SDG:DATE/TIME:PAGE: Broadbent & Associates - UT Pilot 748-605-13 L1775344 09/17/24 06:34 9 of 20 SAMPLE RESULTS - 05 L1775344 MW-9 Collected date/time: 09/05/24 10:15 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 612 B 100 1 09/11/2024 16:21 WG2360275 (S) a,a,a-Trifluorotoluene(FID)92.9 78.0-120 09/11/2024 16:21 WG2360275 Volatile Organic Compounds (GC/MS) by Method 8260B Result Qualifier RDL Dilution Analysis Batch Analyte ug/l ug/l date / time Benzene 6.71 1.00 1 09/12/2024 11:57 WG2361158 Toluene ND 1.00 1 09/12/2024 11:57 WG2361158 Ethylbenzene ND 1.00 1 09/12/2024 11:57 WG2361158 Total Xylenes ND 3.00 1 09/12/2024 11:57 WG2361158 Methyl tert-butyl ether 6.86 1.00 1 09/12/2024 11:57 WG2361158 Naphthalene ND 5.00 1 09/12/2024 11:57 WG2361158 (S) Toluene-d8 102 80.0-120 09/12/2024 11:57 WG2361158 (S) 4-Bromofluorobenzene 98.8 77.0-126 09/12/2024 11:57 WG2361158 (S) 1,2-Dichloroethane-d4 103 70.0-130 09/12/2024 11:57 WG2361158 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 630 100 1 09/14/2024 20:26 WG2362483 (S) o-Terphenyl 68.9 52.0-156 09/14/2024 20:26 WG2362483 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 748-605-13 L1775344 09/16/24 20:31 10 of 20 ACCOUNT:PROJECT:SDG:DATE/TIME:PAGE: Broadbent & Associates - UT Pilot 748-605-13 L1775344 09/17/24 06:34 10 of 20 SAMPLE RESULTS - 06 L1775344 MW-10 Collected date/time: 09/05/24 14:05 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 09/11/2024 16:46 WG2360275 (S) a,a,a-Trifluorotoluene(FID)95.0 78.0-120 09/11/2024 16:46 WG2360275 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 09/12/2024 12:18 WG2361158 Toluene ND 1.00 1 09/12/2024 12:18 WG2361158 Ethylbenzene ND 1.00 1 09/12/2024 12:18 WG2361158 Total Xylenes ND 3.00 1 09/12/2024 12:18 WG2361158 Methyl tert-butyl ether 1.99 1.00 1 09/12/2024 12:18 WG2361158 Naphthalene ND 5.00 1 09/12/2024 12:18 WG2361158 (S) Toluene-d8 106 80.0-120 09/12/2024 12:18 WG2361158 (S) 4-Bromofluorobenzene 96.6 77.0-126 09/12/2024 12:18 WG2361158 (S) 1,2-Dichloroethane-d4 102 70.0-130 09/12/2024 12:18 WG2361158 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 09/14/2024 22:06 WG2362483 (S) o-Terphenyl 68.4 52.0-156 09/14/2024 22:06 WG2362483 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 748-605-13 L1775344 09/16/24 20:31 11 of 20 ACCOUNT:PROJECT:SDG:DATE/TIME:PAGE: Broadbent & Associates - UT Pilot 748-605-13 L1775344 09/17/24 06:34 11 of 20 SAMPLE RESULTS - 07 L1775344 MW-12 Collected date/time: 09/05/24 09:40 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 142 B 100 1 09/11/2024 17:10 WG2360275 (S) a,a,a-Trifluorotoluene(FID)95.0 78.0-120 09/11/2024 17:10 WG2360275 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 09/12/2024 14:03 WG2361158 Toluene ND 1.00 1 09/12/2024 14:03 WG2361158 Ethylbenzene ND 1.00 1 09/12/2024 14:03 WG2361158 Total Xylenes ND 3.00 1 09/12/2024 14:03 WG2361158 Methyl tert-butyl ether 4.05 1.00 1 09/12/2024 14:03 WG2361158 Naphthalene ND 5.00 1 09/12/2024 14:03 WG2361158 (S) Toluene-d8 102 80.0-120 09/12/2024 14:03 WG2361158 (S) 4-Bromofluorobenzene 98.8 77.0-126 09/12/2024 14:03 WG2361158 (S) 1,2-Dichloroethane-d4 104 70.0-130 09/12/2024 14:03 WG2361158 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 275 100 1 09/14/2024 22:26 WG2362483 (S) o-Terphenyl 65.3 52.0-156 09/14/2024 22:26 WG2362483 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 748-605-13 L1775344 09/16/24 20:31 12 of 20 ACCOUNT:PROJECT:SDG:DATE/TIME:PAGE: Broadbent & Associates - UT Pilot 748-605-13 L1775344 09/17/24 06:34 12 of 20 SAMPLE RESULTS - 08 L1775344 MW-18 Collected date/time: 09/05/24 09:10 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 171 B 100 1 09/11/2024 17:34 WG2360275 (S) a,a,a-Trifluorotoluene(FID)95.0 78.0-120 09/11/2024 17:34 WG2360275 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 09/12/2024 14:24 WG2361158 Toluene ND 1.00 1 09/12/2024 14:24 WG2361158 Ethylbenzene ND 1.00 1 09/12/2024 14:24 WG2361158 Total Xylenes ND 3.00 1 09/12/2024 14:24 WG2361158 Methyl tert-butyl ether 128 1.00 1 09/12/2024 14:24 WG2361158 Naphthalene ND 5.00 1 09/12/2024 14:24 WG2361158 (S) Toluene-d8 105 80.0-120 09/12/2024 14:24 WG2361158 (S) 4-Bromofluorobenzene 98.9 77.0-126 09/12/2024 14:24 WG2361158 (S) 1,2-Dichloroethane-d4 104 70.0-130 09/12/2024 14:24 WG2361158 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 134 100 1 09/14/2024 22:46 WG2362483 (S) o-Terphenyl 67.9 52.0-156 09/14/2024 22:46 WG2362483 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 748-605-13 L1775344 09/16/24 20:31 13 of 20 ACCOUNT:PROJECT:SDG:DATE/TIME:PAGE: Broadbent & Associates - UT Pilot 748-605-13 L1775344 09/17/24 06:34 13 of 20 SAMPLE RESULTS - 09 L1775344 MW-21 Collected date/time: 09/05/24 13:30 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 ND 100 1 09/11/2024 17:58 WG2360275 (S) a,a,a-Trifluorotoluene(FID)95.6 78.0-120 09/11/2024 17:58 WG2360275 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 09/12/2024 14:45 WG2361158 Toluene ND 1.00 1 09/12/2024 14:45 WG2361158 Ethylbenzene ND 1.00 1 09/12/2024 14:45 WG2361158 Total Xylenes ND 3.00 1 09/12/2024 14:45 WG2361158 Methyl tert-butyl ether ND 1.00 1 09/12/2024 14:45 WG2361158 Naphthalene ND 5.00 1 09/12/2024 14:45 WG2361158 (S) Toluene-d8 105 80.0-120 09/12/2024 14:45 WG2361158 (S) 4-Bromofluorobenzene 96.9 77.0-126 09/12/2024 14:45 WG2361158 (S) 1,2-Dichloroethane-d4 103 70.0-130 09/12/2024 14:45 WG2361158 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 09/14/2024 23:06 WG2362483 (S) o-Terphenyl 70.5 52.0-156 09/14/2024 23:06 WG2362483 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 748-605-13 L1775344 09/16/24 20:31 14 of 20 ACCOUNT:PROJECT:SDG:DATE/TIME:PAGE: Broadbent & Associates - UT Pilot 748-605-13 L1775344 09/17/24 06:34 14 of 20 QUALITY CONTROL SUMMARYWG2360275 Volatile Organic Compounds (GC) by Method 8015D/GRO L1775344-01,02,03,04,05,06,07,08,09 Method Blank (MB) (MB) R4120022-2 09/11/24 10:38 MB Result MB Qualifier MB MDL MB RDL Analyte ug/l ug/l ug/l TPH (GC/FID) Low Fraction 88.4 J 31.4 100 (S) a,a,a-Trifluorotoluene(FID)95.1 78.0-120 Laboratory Control Sample (LCS) (LCS) R4120022-1 09/11/24 09:50 Spike Amount LCS Result LCS Rec.Rec. Limits LCS Qualifier Analyte ug/l ug/l %% TPH (GC/FID) Low Fraction 5000 5720 114 72.0-127 (S) a,a,a-Trifluorotoluene(FID) 98.8 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 748-605-13 L1775344 09/16/24 20:31 15 of 20 ACCOUNT:PROJECT:SDG:DATE/TIME:PAGE: Broadbent & Associates - UT Pilot 748-605-13 L1775344 09/17/24 06:34 15 of 20 QUALITY CONTROL SUMMARYWG2361158 Volatile Organic Compounds (GC/MS) by Method 8260B L1775344-01,02,03,04,05,06,07,08,09 Method Blank (MB) (MB) R4119543-3 09/12/24 09:32 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 105 80.0-120 (S) 4-Bromofluorobenzene 96.3 77.0-126 (S) 1,2-Dichloroethane-d4 108 70.0-130 Laboratory Control Sample (LCS) • Laboratory Control Sample Duplicate (LCSD) (LCS) R4119543-1 09/12/24 08:29 • (LCSD) R4119543-2 09/12/24 08:50 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 5.35 5.14 107 103 70.0-123 4.00 20 Toluene 5.00 5.30 5.19 106 104 79.0-120 2.10 20 Ethylbenzene 5.00 5.30 5.14 106 103 79.0-123 3.07 20 Total Xylenes 15.0 15.7 15.5 105 103 79.0-123 1.28 20 Methyl tert-butyl ether 5.00 5.32 5.23 106 105 68.0-125 1.71 20 Naphthalene 5.00 4.04 4.24 80.8 84.8 54.0-135 4.83 20 (S) Toluene-d8 105 104 80.0-120 (S) 4-Bromofluorobenzene 97.7 97.2 77.0-126 (S) 1,2-Dichloroethane-d4 105 103 70.0-130 1 Cp 2 Tc 3 Ss 4 Cn 5 Sr 6 Qc 7 Gl 8 Al 9 Sc ACCOUNT:PROJECT:SDG:DATE/TIME:PAGE: Broadbent & Associates - UT Pilot 748-605-13 L1775344 09/16/24 20:31 16 of 20 ACCOUNT:PROJECT:SDG:DATE/TIME:PAGE: Broadbent & Associates - UT Pilot 748-605-13 L1775344 09/17/24 06:34 16 of 20 QUALITY CONTROL SUMMARYWG2362483 Semi-Volatile Organic Compounds (GC) by Method 3511/8015 L1775344-01,02,03,04,05,06,07,08,09 Method Blank (MB) (MB) R4120234-1 09/14/24 17:47 MB Result MB Qualifier MB MDL MB RDL Analyte ug/l ug/l ug/l DRO w/ SGT U 24.7 100 (S) o-Terphenyl 63.0 52.0-156 Laboratory Control Sample (LCS) • Laboratory Control Sample Duplicate (LCSD) (LCS) R4120234-2 09/14/24 18:07 • (LCSD) R4120234-3 09/14/24 18:27 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 1300 1350 86.7 90.0 50.0-150 3.77 20 (S) o-Terphenyl 82.5 82.0 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 748-605-13 L1775344 09/16/24 20:31 17 of 20 ACCOUNT:PROJECT:SDG:DATE/TIME:PAGE: Broadbent & Associates - UT Pilot 748-605-13 L1775344 09/17/24 06:34 17 of 20 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 748-605-13 L1775344 09/16/24 20:31 18 of 20 ACCOUNT:PROJECT:SDG:DATE/TIME:PAGE: Broadbent & Associates - UT Pilot 748-605-13 L1775344 09/17/24 06:34 18 of 20 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 748-605-13 L1775344 09/16/24 20:31 19 of 20 ACCOUNT:PROJECT:SDG:DATE/TIME:PAGE: Broadbent & Associates - UT Pilot 748-605-13 L1775344 09/17/24 06:34 19 of 20