Loading...
The URL can be used to link to this page
Your browser does not support the video tag.
Home
My WebLink
About
DERR-2024-004603
Page 1 ATLAS February 6, 2024 Mr. Mark Crim Utah Department of Environmental Quality Division of Environmental Response and Remediation 195 North 1950 West Salt Lake City, Utah 84114-4840 SUBJECT: Groundwater Monitoring Report Former Circle C Store 1271 North Carbonville Road Price, Utah Facility ID #5000322 UST Release Site KXV Work Assignment KXV-34 UDEQ Technical Services Contract #216364 Dear Mr. Crim: Please find attached the Groundwater Monitoring Report for the above referenced site. INTRODUCTION On December 4, 2023, Atlas Technical Consultants (Atlas) conducted a groundwater sampling event at the former Circle C Store facility located at 1271 North Carbonville Road, Price, Utah (see Figure 1). The work was performed on behalf of the Utah Department Environmental Quality, Division of Environmental Response and Remediation (DERR) under Work Assignment KXV-34. The field effort and laboratory procedures utilized to collect the information presented in this report are discussed in the following sections. FIELD PARAMETER WELL PURGING PROCEDURES AND CHEMICAL ANALYSIS The approved work plan included collecting water levels from all of the monitoring wells, then sampling monitoring wells MW -7, MW -12, and MW-13. The site map depicting the groundwater monitoring well locations and surrounding area features is presented as Figure 1. Prior to well purging, groundwater depth was measured in each well using an electronic water level/free product interface probe. No free product was observed in any of the monitoring wells sampled. The water level/free product interface probe was decontaminated between each well with an Alconox detergent wash and tap water rinse. Following field parameter measurements all monitoring wells were purged a minimum of three well volumes or until dry of water using new, factory-sealed, disposable PVC bailers. Following the purging process, the wells were allowed to recharge to within 95 percent of the pre-purge water level and then sampled. The samples were transferred to appropriate containers and immediately placed on ice in an insulated cooler and then transported under chain-of-custody documentation to a Utah-certified laboratory for analysis. 358 South 700 East, B518 Salt Lake City, Utah 84102 Office: 801.935.4917 www.oneatlas.com Page 2 ATLAS The groundwater samples were analyzed for methyl t-butyl ether, benzene, toluene, ethyl benzene, total xylenes, naphthalene (MBTEXN), using EPA Method 8260; and for total petroleum hydrocarbons as gasoline (TPH-GRO) and TPH as diesel (TPH-DRO) using EPA Method 8015. Field Parameter and Chemical Analysis Results Groundwater measurements and laboratory results are presented in Table 1. The December 2023 groundwater elevation data were utilized to prepare a groundwater contour map (Figure 2) for the site. The groundwater flow direction appears to be toward the south-southeast as measured between MW-12 and MW-7 at a gradient of 0.024 feet/foot. The laboratory results for the samples collected from the monitoring wells in December 2023 indicated the detection of constituents above their respective Initial Screening Levels (ISL) in MW -7, MW -12, and MW -13. Benzene was detected above the ISL of 0.005 mg/L in MW -7 (0.00605 mg/L), MW -12 (0.7140 mg/L), and MW-13 (4.090 mg/L). Ethylbenzene was detected above the ISL of 0.7 in MW -13 (0.791 mg/L). No other MBTEXN constituents were measured above their respective ISLs. The Benzene Isoconcentration Map is presented as Figure 3. The TPH-GRO Initial Screening Level of 1.0 mg/L was exceeded in MW -12 (5.600 mg/L) and MW -13 (42.100 mg/L). The TPH-GRO Isoconcentration Map is presented as Figure 4. The TPH-DRO Initial Screening Level of 1.0 mg/L was also exceeded in MW -12 (3.090 mg/L) and MW -13 (31.200 mg/L). The laboratory data are summarized in Table 1 and a copy of the laboratory report is included in Appendix A. CONCLUSIONS AND RECOMMENDATIONS The results of the December 2023 groundwater monitoring event indicate the detection of benzene above its ISL in all three wells sampled (MW -7, MW -12, and MW -13) and ethylbenzene above its ISL in MW -7. No other MBTEXN constituents were measured above their respective ISLs in any of the wells. TPH-GRO and TPH-DRO ISLs were exceeded in MW - 12 and MW -13. Based upon review of the December 2023 groundwater data, and review of historical groundwater data, Atlas recommends that semi-annual groundwater monitoring continue at the site. The December 2023 groundwater monitoring event was the first monitoring event under work assignment KXV-34. The next groundwater monitoring event is scheduled for June 2024. Our services consist of professional opinions and recommendations made in accordance with generally accepted geotechnical and environmental engineering principles and practices. This warranty is in lieu of all other warranties either expressed or implied. Should you have any questions, please do not hesitate to call us at (801) 935-4917. Sincerely, Atlas Technical Consultants, LLC Olaf Questereit Jim Coletta, P.G. Senior Technician Branch Manager Utah Certified UST Consultant FIGURES FIGURE 1 FIGURE 2 FIGURE 3 FIGURE 4 TABLES Sample TOC Benzene Ethyl Benzene MTBE Naph- thalene Toluene Total Xylenes TPH-GRO TPH-DRO Initial Screening Level 0.005 0.7 0.2 0.7 1.0 10 1.0 1.0 RBCA Tier 1 Screening Level 0.3 4.0 0.2 0.7 3.0 10 10 10 MW-1 03/20/08 0.12 0.0092 <0.002 <0.002 0.0065 0.019 0.20 <0.50 16.63 80.17 96.80 12/15/08 0.91 0.056 0.0023 0.0052 0.030 0.059 1.4 <0.50 15.62 81.18 Destroyed 08/2010 03/17/09 0.055 0.0029 <0.002 <0.002 0.0021 0.0069 0.075 <0.51 16.47 80.33 06/16/09 0.33 0.021 <0.002 0.0031 0.013 0.050 0.79 <0.50 15.61 81.19 09/21/09 0.026 <0.002 <0.002 <0.002 <0.002 0.0037 0.037 <0.51 14.87 81.93 06/11/10 0.383 0.009 <0.001 0.008 0.011 0.027 0.507 <1 14.38 82.42 MW-1A 09/30/10 0.002 <0.001 <0.001 0.003 <0.001 <0.003 <0.05 <1 14.11 82.71 96.82 12/21/10 <0.001 <0.001 <0.001 <0.002 <0.001 <0.003 0.069 <1 15.71 81.11 06/06/11 <0.001 <0.001 <0.001 0.005 <0.001 <0.003 <0.05 <1 14.48 82.34 11/02/11 <0.001 <0.001 <0.001 <0.002 <0.001 <0.003 <0.05 <1 15.12 81.70 02/15/12 <0.001 <0.001 <0.001 <0.002 <0.001 <0.003 <0.05 <1 16.35 80.47 05/29/12 <0.001 <0.001 <0.001 <0.002 <0.001 <0.003 <0.05 <1 13.94 82.88 12/19/12 <0.001 <0.001 <0.001 0.006 0.003 <0.003 <0.05 <1 16.17 80.65 06/28/13 <0.001 <0.001 <0.001 <0.005 <0.001 <0.003 <0.05 <1 15.52 81.30 12/19/13 <0.0010 <0.0010 <0.0010 <0.0050 <0.0050 <0.0030 <0.10 <0.10 15.78 81.04 06/30/14 <0.0010 <0.0010 <0.0010 <0.0050 <0.0050 <0.0030 <0.10 <0.10 15.78 81.04 10/25/16 18.48 78.34 MW-2 03/20/08 <0.001 <0.002 <0.002 <0.002 <0.002 <0.002 <0.02 <0.50 14.97 80.67 95.64 12/15/08 <0.001 <0.002 <0.002 <0.002 <0.002 <0.002 <0.02 <0.50 13.75 81.89 03/17/09 <0.002 <0.002 <0.002 <0.002 <0.002 <0.002 <0.02 <0.50 14.70 80.94 06/16/09 <0.001 <0.002 <0.002 <0.002 <0.002 <0.002 <0.02 <0.50 13.80 81.84 09/21/09 <0.001 <0.002 <0.002 <0.002 <0.002 <0.002 <0.02 <0.51 13.02 82.62 06/11/10 <0.001 <0.001 <0.001 0.004 <0.001 <0.003 <0.05 <1 12.91 82.73 09/30/10 <0.001 <0.001 <0.001 <0.002 <0.001 <0.003 <0.05 <1 14.11 81.53 12/22/10 <0.001 <0.001 <0.001 0.002 <0.001 <0.003 0.054 <1 13.60 82.04 06/06/11 <0.001 <0.001 <0.001 0.002 <0.001 <0.003 <0.05 <1 12.79 82.85 11/02/11 <0.001 <0.001 <0.001 0.002 <0.001 <0.003 <0.05 <1 12.99 82.65 02/15/12 <0.001 <0.001 <0.001 <0.002 <0.001 <0.003 <0.05 <1 14.27 81.37 05/29/12 <0.001 <0.001 <0.001 <0.002 <0.001 <0.003 <0.05 <1 12.56 83.08 12/19/12 <0.001 <0.001 <0.001 0.002 <0.001 <0.003 <0.05 <1 14.12 81.52 06/28/13 <0.001 <0.001 <0.001 <0.005 <0.001 <0.003 <0.05 <1 13.78 81.86 12/18/13 <0.0010 <0.0010 <0.0010 <0.0050 <0.0050 <0.0030 <0.10 <0.10 13.83 81.81 06/30/14 <0.0010 <0.0010 <0.0010 <0.0050 <0.0050 <0.0030 <0.10 <0.10 13.83 81.81 10/25/16 16.61 79.03 MW-3 03/20/08 <0.001 <0.002 <0.002 <0.002 <0.002 <0.002 <0.02 <0.50 16.61 78.99 95.60 12/15/08 <0.001 <0.002 <0.002 <0.002 <0.002 <0.002 <0.02 <0.50 15.68 79.92 03/17/09 <0.002 <0.002 <0.002 <0.002 <0.002 <0.002 <0.02 <0.51 16.47 79.13 06/16/09 <0.001 <0.002 <0.002 <0.002 <0.002 <0.002 <0.02 <0.50 15.74 79.86 09/21/09 <0.001 <0.002 <0.002 <0.002 <0.002 <0.002 0.064 <0.51 14.95 80.65 06/11/10 <0.001 <0.001 <0.001 0.003 <0.001 <0.003 <0.05 <1 14.18 81.42 09/30/10 <0.001 <0.001 <0.001 <0.002 <0.001 <0.003 <0.05 <1 12.13 83.47 12/22/10 <0.001 <0.001 <0.001 0.004 <0.001 <0.003 0.070 <1 15.48 80.12 06/06/11 <0.001 <0.001 <0.001 <0.002 <0.001 <0.003 <0.05 <1 13.99 81.61 11/02/11 <0.001 <0.001 <0.001 0.002 <0.001 <0.003 <0.05 <1 14.79 80.81 02/15/12 <0.001 <0.001 <0.001 <0.002 <0.001 <0.003 <0.05 <1 16.01 79.59 05/29/12 <0.001 <0.001 <0.001 <0.002 <0.001 <0.003 <0.05 <1 13.33 82.27 12/19/12 <0.001 <0.001 <0.001 <0.002 <0.001 <0.003 <0.05 <1 15.82 79.78 06/28/13 <0.001 <0.001 <0.001 <0.005 <0.001 <0.003 <0.05 <1 15.05 80.55 12/18/13 <0.0010 <0.0010 <0.0010 <0.0050 <0.0050 <0.0030 <0.10 <0.10 15.36 80.24 06/30/14 <0.0010 <0.0010 <0.0010 <0.0050 <0.0050 <0.0030 <0.10 <0.10 15.36 80.24 10/25/16 18.09 77.51 Date WELL WAS NOT INCLUDED IN SAMPLING EVENT WELL WAS DECOMMISSIONED 10/25/16 TABLE 1 GROUNDWATER ANALYTICAL SUMMARY FORMER CIRCLE C STORE 1271 NORTH CARBONVILLE ROAD PRICE, UTAH LUST I.D. KXV DTW (feet) Groundwater Concentrations (mg/L) Facility I.D. #5000322 WELL WAS DECOMMISSIONED 10/25/16 WTE (feet) Page 1 of 6 Sample TOC Benzene Ethyl Benzene MTBE Naph- thalene Toluene Total Xylenes TPH-GRO TPH-DRO Initial Screening Level 0.005 0.7 0.2 0.7 1.0 10 1.0 1.0 RBCA Tier 1 Screening Level 0.3 4.0 0.2 0.7 3.0 10 10 10 Date TABLE 1 GROUNDWATER ANALYTICAL SUMMARY FORMER CIRCLE C STORE 1271 NORTH CARBONVILLE ROAD PRICE, UTAH LUST I.D. KXV DTW (feet) Groundwater Concentrations (mg/L) Facility I.D. #5000322 WTE (feet) MW-4 03/20/08 0.20 0.0093 <0.002 0.0024 0.0022 0.017 0.61 0.50 15.25 78.49 93.74 12/15/08 1.4 0.096 <0.002 0.016 0.035 0.11 2.9 1.2 14.34 79.40 03/17/09 1.2 0.055 <0.002 <0.002 0.019 0.058 2.1 1.1 15.07 13.75 06/16/09 0.30 0.016 <0.002 <0.002 0.0029 0.025 1.4 <0.50 14.41 79.33 09/21/09 0.064 <0.002 <0.002 <0.002 <0.002 <0.002 0.064 1.4 13.75 79.99 06/11/10 0.154 0.002 <0.001 0.003 0.001 0.003 0.267 <1 13.02 80.72 09/30/10 0.060 0.003 <0.001 <0.002 <0.001 <0.003 0.241 <1 12.63 81.11 12/21/10 0.121 0.017 <0.001 <0.002 0.001 0.023 0.915 1.9 14.18 79.56 06/06/11 0.029 0.024 <0.001 0.002 <0.001 0.027 1.78 <1 12.88 80.86 11/02/11 0.062 0.011 <0.001 <0.002 <0.001 0.015 2.63 <1 13.65 80.09 02/15/12 0.455 0.017 <0.001 <0.002 <0.001 <0.003 1.82 <1 14.74 79.00 05/29/12 0.015 0.017 <0.001 <0.002 <0.001 0.007 0.571 <1 12.32 81.42 12/19/12 0.020 0.021 <0.001 0.002 0.004 0.005 1.44 <1 14.61 79.13 06/28/13 0.007 0.035 <0.005 <0.01 <0.005 0.042 1.35 <1 13.95 79.79 12/18/13 0.004 0.022 0.0011 <0.0050 <0.0050 <0.0030 1.2 0.047 14.23 79.51 07/01/14 0.0099 0.016 <0.0010 <0.0050 <0.0050 <0.0030 2.8 0.66 14.23 79.51 10/25/16 16.77 76.97 07/10/18 <0.005 <0.012 <0.005 <0.012 <0.012 <0.012 <0.125 <1.0 16.11 77.63 03/25/20 <0.00100 0.000713J 0.000566J <0.00500 <0.00100 <0.00300 0.257 0.101 16.49 77.25 09/22/20 <0.00100 0.000487J 0.000222J <0.00500 <0.00100 <0.00300 0.302 0.128 16.64 77.10 09/20/21 <0.00100 <0.00100 0.000238J 0.00131J <0.00100 0.000226J 0.0807J <0.100J3 18.01 75.73 03/21/22 <0.00100 0.000605J 0.000427J <0.00500 <0.00100 <0.00300 0.541 0.248 16.65 77.09 09/28/22 0.000710J 0.00248 0.000187J 0.0144 <0.00100 0.00197J 0.0694J,T8 <0.100 17.35 76.39 03/02/23 <0.00100 0.000237J 0.000195J <0.00500 <0.00100 <0.00300 0.199 0.147J3 16.23 77.51 12/04/23 16.56 77.18 MW-5 03/20/08 <0.001 0.016 <0.002 <0.002 0.0023 0.038 0.18 <0.50 14.53 76.00 90.53 12/15/08 0.0084 0.28 <0.002 0.064 0.037 0.45 1.9 <0.50 13.73 76.80 03/17/09 0.0030 0.064 <0.002 0.007 0.0047 0.013 0.47 <0.51 14.38 76.15 06/16/09 <0.001 <0.002 <0.002 <0.002 <0.002 <0.002 <0.02 <0.50 13.81 76.72 09/21/09 0.042 <0.002 <0.002 <0.002 <0.002 0.0034 0.092 <0.51 13.30 77.23 06/11/10 <0.001 <0.001 <0.001 0.003 <0.001 <0.003 <0.05 <1 12.69 77.84 09/30/10 <0.001 <0.001 <0.001 <0.002 <0.001 <0.003 <0.05 <1 12.39 78.14 12/22/10 <0.001 0.044 <0.001 0.006 0.004 0.065 0.541 <1 13.58 76.95 06/06/11 <0.001 <0.001 <0.001 <0.002 <0.001 <0.003 <0.05 <1 12.41 78.12 11/02/11 <0.001 0.047 <0.001 0.007 0.004 0.066 0.328 <1 13.13 77.40 02/15/12 <0.001 <0.001 <0.001 <0.002 <0.001 <0.003 0.071 <1 14.11 76.42 05/29/12 <0.001 <0.001 <0.001 <0.002 <0.001 <0.003 0.178 <1 12.13 78.40 12/19/12 <0.001 0.016 <0.001 0.003 <0.001 <0.003 0.217 <1 14.06 76.47 06/28/13 <0.001 0.004 <0.001 <0.005 0.006 0.014 <0.05 <1 13.60 76.93 12/18/13 <0.0010 0.0013 <0.0010 <0.0050 <0.0050 <0.0030 <0.10 <0.10 13.84 76.69 07/01/14 <0.0010 <0.0010 <0.0010 <0.0050 <0.0050 <0.0030 <0.10 <0.10 13.84 76.69 10/25/16 NM NM MW-6 03/20/08 0.0012 <0.002 <0.002 <0.002 <0.002 <0.002 <0.02 <0.50 15.26 76.18 91.44 12/15/08 0.0011 <0.002 <0.002 <0.002 <0.002 <0.002 <0.02 <0.50 14.44 77.00 03/17/09 <0.002 <0.002 <0.002 <0.002 <0.002 <0.002 <0.02 <0.51 15.14 76.30 06/16/09 <0.001 <0.002 <0.002 <0.002 <0.002 <0.002 <0.02 <0.50 14.43 77.01 09/21/09 <0.001 <0.002 <0.002 <0.002 <0.002 <0.002 <0.02 <0.51 13.92 77.52 06/11/10 <0.001 <0.001 <0.001 0.003 <0.001 <0.003 <0.05 <1 13.17 78.27 09/30/10 <0.001 <0.001 <0.001 <0.002 <0.001 <0.003 <0.05 <1 12.92 78.52 12/22/10 <0.001 <0.001 <0.001 0.004 <0.001 <0.003 0.123 <1 13.45 77.99 06/06/11 <0.001 <0.001 <0.001 <0.002 <0.001 <0.003 <0.05 <1 12.96 78.48 11/02/11 <0.001 <0.001 <0.001 0.002 <0.001 <0.003 <0.05 <1 13.80 77.64 WELL WAS NOT INCLUDED IN SAMPLING EVENT WELL WAS NOT LOCATED WELL WAS NOT INCLUDED IN SAMPLING EVENT Page 2 of 6 Sample TOC Benzene Ethyl Benzene MTBE Naph- thalene Toluene Total Xylenes TPH-GRO TPH-DRO Initial Screening Level 0.005 0.7 0.2 0.7 1.0 10 1.0 1.0 RBCA Tier 1 Screening Level 0.3 4.0 0.2 0.7 3.0 10 10 10 Date TABLE 1 GROUNDWATER ANALYTICAL SUMMARY FORMER CIRCLE C STORE 1271 NORTH CARBONVILLE ROAD PRICE, UTAH LUST I.D. KXV DTW (feet) Groundwater Concentrations (mg/L) Facility I.D. #5000322 WTE (feet) MW-6 02/15/12 <0.001 <0.001 <0.001 <0.002 <0.001 <0.003 0.097 <1 14.75 76.69 Cont.05/29/12 <0.001 <0.001 <0.001 <0.002 <0.001 <0.003 <0.05 <1 12.50 78.94 12/19/12 <0.001 <0.001 <0.001 0.002 <0.001 <0.003 <0.05 <1 14.73 76.71 06/28/13 <0.001 <0.001 <0.001 <0.005 <0.001 <0.003 <0.05 <1 14.08 77.36 12/18/13 <0.0010 <0.0010 <0.0010 <0.0050 <0.0050 <0.0030 <0.10 0.33 14.39 77.05 07/01/14 <0.0010 <0.0010 <0.0010 <0.0050 <0.0050 <0.0030 <0.10 <0.10 14.39 77.05 10/25/16 NM NM MW-7 03/20/08 0.32 0.044 <0.002 0.0047 0.058 0.13 1.5 0.56 14.50 75.56 90.06 12/15/08 0.75 0.046 <0.002 0.0079 0.017 0.06 1.6 1.5 13.72 76.34 03/17/09 1.2 0.030 <0.002 0.0030 0.019 0.037 1.6 2.5 14.38 75.68 06/16/09 0.045 0.0031 <0.002 <0.002 <0.002 0.0041 0.11 <0.50 13.79 76.27 09/21/09 <0.001 <0.002 <0.002 <0.002 <0.002 <0.002 <0.02 <0.51 13.33 76.73 06/11/10 0.029 0.003 <0.001 0.003 0.001 <0.003 0.125 <1 12.69 77.37 09/30/10 0.022 0.002 <0.001 <0.002 <0.001 <0.003 0.105 <1 12.37 77.69 12/22/10 0.102 0.007 <0.001 <0.002 <0.001 <0.003 0.176 <1 13.60 76.46 06/06/11 0.009 <0.001 <0.001 <0.002 <0.001 <0.003 <0.05 <1 12.38 77.68 11/01/11 0.140 0.013 <0.001 0.003 0.008 0.029 0.654 <1 13.01 77.05 02/15/12 0.027 <0.001 <0.001 <0.002 <0.001 <0.003 0.124 <1 14.10 75.96 05/29/12 0.017 0.001 <0.001 <0.002 0.001 <0.003 <0.05 <1 12.03 78.03 12/19/12 0.001 <0.001 <0.001 <0.002 <0.001 <0.003 <0.05 <1 13.99 76.07 06/28/13 <0.001 <0.001 <0.001 <0.002 <0.001 <0.003 <0.05 <1 13.57 76.49 12/18/13 0.058 0.001 <0.0010 <0.0050 0.0008 <0.0030 <0.10 0.25 13.85 76.21 07/01/14 0.030 0.001 <0.0010 <0.0050 <0.0050 <0.0030 0.20 0.23 13.85 76.21 10/25/16 1.49 0.062 <0.050 <0.050 0.124 0.056 2.40 8.0 16.08 73.98 07/10/18 2.48 0.202 <0.005 <0.012 0.110 0.211 5.28 10.0 15.51 74.55 03/25/20 0.325 0.0277 <0.00500 <0.0250 0.0471 0.0270 2.180 1.670 14.90 75.16 09/22/20 0.198 0.0176 <0.00100 <0.00500 0.00752 0.00798 1.030 0.949 15.99 74.07 09/20/21 0.00743 0.000552J <0.00100 <0.00500 0.000336J 0.00252J 0.048J 0.134J3 17.28 72.78 03/21/22 0.0122 0.000882J <0.00100 <0.00500 0.000490J 0.000342J 0.215B 0.138 15.84 74.22 09/28/22 0.00521 0.000809J <0.00100 0.00276J <0.00100 0.000341J 0.0721B,J 0.107B 16.62 73.44 03/02/23 0.0104 0.000586J <0.00100 <0.00500 0.000446J 0.000280J 0.229 0.248J3 15.38 74.68 12/04/23 0.00605 0.000474J <0.00100 <0.00500 <0.00100 <0.00300 0.0550J 0.0326J 15.82 74.24 MW-7A 12/15/08 0.88 0.036 <0.002 0.0069 0.013 0.045 1.5 3.5 NM NM Field Dup.03/17/09 0.60 0.029 <0.002 0.0027 0.018 0.035 1.0 3.0 NM NM 06/16/09 0.029 0.0021 <0.002 <0.002 <0.002 0.0027 0.070 0.59 NM NM 09/21/09 0.025 <0.002 <0.002 <0.002 <0.002 0.0023 0.035 <0.51 NM NM 06/11/10 0.039 0.003 <0.001 <0.002 0.001 <0.003 <0.05 <1 NM NM 09/30/10 0.028 0.002 <0.001 <0.002 <0.001 <0.003 0.082 <1 NM NM 12/22/10 0.109 0.008 <0.001 <0.002 0.001 <0.003 0.326 <1 NM NM 06/06/11 0.008 <0.001 <0.001 <0.002 <0.001 <0.003 <0.05 <1 NM NM 11/01/11 0.140 0.013 <0.001 0.003 0.008 0.031 0.579 <1 NM NM 02/15/12 0.033 <0.001 <0.001 <0.002 <0.001 <0.003 0.147 <1 NM NM 05/29/12 0.020 0.002 <0.001 <0.002 0.001 <0.003 <0.05 <1 NM NM 12/19/12 0.001 <0.001 <0.001 <0.002 <0.001 <0.003 <0.05 <1 NM NM 06/28/13 <0.001 <0.001 <0.001 <0.002 <0.001 <0.003 <0.05 <1 NM NM 07/01/14 0.026 0.0011 <0.0010 <0.0050 <0.0050 <0.0030 0.120 0.28 NM NM 10/25/16 NM NM NM NM NM NM NM NM NM NM MW-8 03/20/08 <0.001 <0.002 <0.002 <0.002 <0.002 <0.002 <0.02 <0.50 13.35 72.54 85.89 12/15/08 <0.001 <0.002 <0.002 <0.002 <0.002 <0.002 <0.02 <0.50 12.66 73.23 03/17/09 <0.002 <0.002 <0.002 <0.002 <0.002 <0.002 <0.02 <0.51 13.24 72.65 06/16/09 <0.001 <0.002 <0.002 <0.002 <0.002 <0.002 <0.02 <0.50 12.70 73.19 WELL WAS DRY Page 3 of 6 Sample TOC Benzene Ethyl Benzene MTBE Naph- thalene Toluene Total Xylenes TPH-GRO TPH-DRO Initial Screening Level 0.005 0.7 0.2 0.7 1.0 10 1.0 1.0 RBCA Tier 1 Screening Level 0.3 4.0 0.2 0.7 3.0 10 10 10 Date TABLE 1 GROUNDWATER ANALYTICAL SUMMARY FORMER CIRCLE C STORE 1271 NORTH CARBONVILLE ROAD PRICE, UTAH LUST I.D. KXV DTW (feet) Groundwater Concentrations (mg/L) Facility I.D. #5000322 WTE (feet) MW-8 09/21/09 0.035 <0.002 <0.002 <0.002 <0.002 0.0026 0.037 <0.51 12.39 73.50 Cont.06/11/10 <0.001 <0.001 <0.001 0.003 <0.001 <0.003 <0.05 <1 11.68 74.21 09/30/10 <0.001 <0.001 <0.001 <0.002 <0.001 <0.003 <0.05 <1 11.41 74.48 12/22/10 <0.001 <0.001 <0.001 0.004 <0.001 <0.003 <0.05 <1 12.56 73.33 06/06/11 <0.001 <0.001 <0.001 <0.002 <0.001 <0.003 <0.05 <1 11.28 74.61 11/01/11 <0.001 <0.001 <0.001 0.002 <0.001 <0.003 <0.05 <1 11.99 73.90 02/15/12 <0.001 <0.001 <0.001 <0.002 <0.001 <0.003 <0.05 <1 12.98 72.91 05/29/12 <0.001 <0.001 <0.001 <0.002 <0.001 <0.003 <0.05 <1 11.02 74.87 12/20/12 <0.001 <0.001 <0.001 0.002 <0.001 <0.003 <0.05 <1 12.91 72.98 06/28/13 <0.001 <0.001 <0.001 <0.002 <0.001 <0.003 <0.05 <1 12.55 73.34 12/18/13 <0.0010 <0.0010 <0.0010 <0.0050 <0.0050 <0.0030 <0.10 <0.10 12.80 73.09 07/01/14 <0.0010 <0.0010 <0.0010 <0.0050 <0.0050 <0.0030 <0.10 <0.10 12.80 73.09 10/25/16 DRY NM MW-9 03/20/08 <0.001 <0.002 <0.002 <0.002 <0.002 <0.002 <0.02 <0.50 15.93 69.60 85.53 12/15/08 <0.001 <0.002 <0.002 <0.002 <0.002 <0.002 <0.02 <0.50 12.10 73.43 03/17/09 <0.002 <0.002 <0.002 <0.002 <0.002 <0.002 <0.02 0.56 12.52 73.01 06/16/09 <0.001 <0.002 <0.002 <0.002 <0.002 <0.002 <0.02 <0.50 11.10 74.43 09/21/09 <0.001 <0.002 <0.002 <0.002 <0.002 <0.002 2.4 <0.51 11.99 73.54 06/11/10 <0.001 <0.001 <0.001 <0.002 <0.001 <0.003 <0.05 <1 11.45 74.08 09/30/10 <0.001 <0.001 <0.001 <0.002 0.003 <0.003 <0.05 <1 11.33 74.20 12/22/10 <0.001 <0.001 <0.001 0.004 <0.001 <0.003 <0.05 <1 11.91 73.62 06/06/11 <0.001 <0.001 <0.001 <0.002 <0.001 <0.003 <0.05 <1 10.79 74.74 11/01/11 <0.001 <0.001 <0.001 0.002 <0.001 <0.003 <0.05 <1 11.50 74.03 02/15/12 <0.001 <0.001 <0.001 <0.002 <0.001 <0.003 <0.05 <1 12.33 73.20 05/29/12 <0.001 <0.001 <0.001 <0.002 <0.001 <0.003 <0.05 <1 10.86 74.67 12/20/12 0.003 <0.001 <0.001 0.002 <0.001 <0.003 <0.05 <1 11.91 73.62 06/28/13 <0.001 0.004 <0.001 <0.005 <0.001 <0.003 <0.05 <1 12.26 73.27 12/18/13 <0.0010 <0.0010 <0.0010 <0.0050 <0.0050 <0.0030 <0.10 0.34 12.40 73.13 07/01/14 <0.0010 <0.0010 <0.0010 <0.0050 <0.0050 <0.0030 <0.10 0.35 12.40 73.13 10/25/16 NM NM MW-10 09/30/10 0.003 0.059 <0.001 0.031 0.005 0.115 2.51 <1 12.64 83.02 95.66 12/21/10 0.008 0.062 <0.005 0.019 0.011 0.111 2.61 2.2 14.04 81.62 06/06/11 0.001 0.003 <0.001 0.003 <0.001 0.004 1.00 <1 13.19 82.47 11/02/11 0.011 0.044 <0.001 0.015 0.010 0.063 0.873 <1 13.44 82.22 02/15/12 <0.001 0.043 <0.001 0.015 <0.001 0.045 1.96 <1 14.73 80.93 05/29/12 <0.001 0.002 <0.001 <0.002 <0.001 <0.003 0.093 <1 12.75 82.91 12/20/12 <0.001 0.001 <0.001 <0.002 <0.001 <0.003 0.428 <1 14.60 81.06 06/28/13 <0.001 0.004 <0.001 <0.002 <0.001 0.008 0.071 <1 14.09 81.57 12/18/13 <0.0010 <0.0010 <0.0010 <0.0050 <0.0050 <0.0030 0.29 <0.10 14.20 81.46 06/30/14 <0.0010 <0.0010 <0.0010 <0.0050 <0.0050 <0.0030 0.10 <0.10 14.20 81.46 10/25/16 16.94 78.72 MW-11 09/30/10 0.085 0.026 <0.001 0.009 0.003 0.029 0.417 <1 13.66 82.10 95.76 12/21/10 0.129 0.002 <0.005 0.007 0.004 0.027 0.376 <1 15.29 80.47 06/06/11 0.117 0.006 <0.001 0.008 0.003 0.013 0.457 <1 13.99 81.77 11/02/11 0.201 0.013 <0.001 0.006 0.006 0.025 0.271 <1 14.69 81.07 02/15/12 0.093 <0.001 <0.001 <0.002 <0.001 <0.003 0.262 <1 15.91 79.85 05/29/12 0.195 0.007 <0.001 0.002 0.005 0.013 0.483 <1 13.39 82.37 12/20/12 0.187 0.003 <0.001 <0.002 0.004 0.009 0.445 <1 15.74 80.02 06/28/13 0.025 0.005 <0.001 <0.002 0.005 0.010 0.131 <1 15.04 80.72 12/18/13 0.038 <0.0010 <0.0010 <0.0050 <0.0050 <0.0030 0.18 <0.10 15.33 80.43 06/30/14 0.013 <0.0010 <0.0010 <0.0050 <0.0050 <0.0030 <0.10 <0.10 15.33 80.43 WELL WAS DECOMMISSIONED 10/25/16 WELL WAS NOT LOCATED WELL WAS NOT INCLUDED IN SAMPLING EVENT Page 4 of 6 Sample TOC Benzene Ethyl Benzene MTBE Naph- thalene Toluene Total Xylenes TPH-GRO TPH-DRO Initial Screening Level 0.005 0.7 0.2 0.7 1.0 10 1.0 1.0 RBCA Tier 1 Screening Level 0.3 4.0 0.2 0.7 3.0 10 10 10 Date TABLE 1 GROUNDWATER ANALYTICAL SUMMARY FORMER CIRCLE C STORE 1271 NORTH CARBONVILLE ROAD PRICE, UTAH LUST I.D. KXV DTW (feet) Groundwater Concentrations (mg/L) Facility I.D. #5000322 WTE (feet) MW-11 10/25/16 17.97 77.79 Cont.07/10/18 0.355 0.043 <0.005 <0.012 <0.012 0.038 1.42 <1.0 17.39 78.37 03/25/20 2.280 0.333 0.000499J 0.0567 0.177 0.677 7.830 4.120 16.49 79.27 09/22/20 2.890 0.457 0.000757J 0.0495 0.0636 0.793 10.700 3.880 17.44 78.32 09/20/21 0.000167J 0.000145J 0.000360J <0.00500 <0.00100 <0.00300 <0.100 <0.100J3 19.23 76.53 03/21/22 0.000677J <0.00100 0.000313J <0.00500 <0.00100 <0.00300 <0.100 0.0620J 17.92 77.84 09/28/22 0.000256J 0.000228J 0.000218J <0.00500 <0.00100 <0.00300 0.0452B,J 0.0384B,J 18.58 77.18 03/02/23 0.000998J <0.00100 0.000228J <0.00500 <0.00100 <0.00300 <0.100 0.0683J,J3 17.52 78.24 12/04/23 17.80 77.96 MW-12 12/22/10 0.320 0.322 <0.01 0.046 0.693 1.48 5.17 1.1 12.80 82.75 95.55 06/06/11 1.19 0.251 <0.01 0.111 0.430 0.74 6.18 <1 13.73 81.82 11/02/11 3.26 0.510 <0.02 0.187 2.06 3.07 16.6 <1 13.81 81.74 02/15/12 0.209 0.044 <0.001 0.018 0.121 0.223 2.29 <1 14.09 81.46 05/29/12 0.148 0.023 0.011 0.013 0.049 0.086 2.13 <1 13.38 82.17 12/19/12 0.013 <0.001 0.002 <0.002 <0.001 <0.003 0.132 <1 15.18 80.37 06/28/13 0.423 0.032 <0.005 <0.01 0.048 0.189 1.36 <1 14.71 80.84 12/19/13 0.43 0.0092 0.0070 <0.0050 0.010 0.018 1.4 2.8 14.89 80.66 06/30/14 1.5 0.095 <0.050 <0.25 <0.25 0.20 6.6 6.1 14.89 80.66 10/25/16 17.53 78.02 07/10/18 2.95 0.514 <0.005 0.090 0.248 1.25 8.03 3.0 17.08 78.47 03/25/20 <0.00100 <0.00100 <0.00100 <0.00500 <0.00100 <0.00300 0.652 0.799 15.89 79.66 09/22/20 <0.00100 0.000353J <0.00100 <0.00500 <0.00100 0.000336J 0.823 0.137 16.85 78.70 09/20/21 <0.00100 0.00321 <0.00100 <0.00500 <0.00100 0.00419 0.269 <0.100J3 18.20 77.35 03/21/22 0.834 0.334 0.000271J 0.0177 0.0739 0.642 8.090 3.420 17.50 78.05 09/28/22 1.140 0.290 0.000487J 0.00448J 0.0501 0.206 5.670B 2.180 18.21 77.34 03/02/23 0.0647 0.0743 <0.00100 0.00860 0.0103 0.369 2.410 1.310J3 17.07 78.48 12/04/23 0.7140 0.166 0.000472J 0.00531 0.0418 0.260 5.600 3.090 17.37 78.18 MW-13 12/22/10 6.03 0.508 <0.01 0.080 1.72 1.82 13.0 8.2 14.50 79.59 94.09 06/06/11 5.73 0.511 <0.025 0.109 1.7 1.76 22.5 <1 12.34 81.75 11/02/11 9.83 0.776 <0.01 0.139 4.43 3.53 36.9 5.6 13.98 80.11 02/15/12 9.14 0.626 <0.01 0.067 0.813 2.12 30.9 2.0 15.11 78.98 05/29/12 4.66 0.404 <0.01 0.094 0.769 1.02 15.4 <1 12.96 81.13 12/19/12 5.77 0.541 <0.01 0.098 1.33 2.11 9.59 5.0 14.99 79.10 06/28/13 3.72 0.487 <0.05 <0.1 1.02 1.63 13.4 <1 14.44 79.65 12/18/13 4.8 0.40 <0.10 <0.50 1.3 1.7 22 12 14.70 79.39 Duplicate 12/18/13 6.6 0.81 <0.10 <0.50 1.6 2.1 26 12 NA NA 07/01/14 6.4 0.81 <0.10 <0.50 1.6 3.2 34 12 14.70 79.39 10/25/16 9.09 1.04 <0.250 <0.250 1.40 3.35 22.8 17.7 17.10 76.99 Duplicate 10/25/16 9.56 1.00 <0.500 <0.500 1.33 3.14 21.6 18.9 NA NA 07/10/18 5.62 1.00 <0.005 0.232 1.15 4.47 24.0 14.1 16.57 77.52 03/25/20 4.030 0.614 <0.0500 0.130J 0.522 1.620 29.300 14.200 16.01 78.08 09/22/20 4.190 0.712 <0.0100 0.125 0.649 1.920 34.900 9.740 17.03 77.06 09/20/21 2.660 0.633 <0.0250 0.0811J 0.317 1.100 26.900 6.360J3 18.35 75.74 03/21/22 3.480 0.837 <0.0250 0.000121J 0.512 1.600 24.800 12.300 16.98 77.11 09/28/22 2.150 0.662 <0.100 0.000140J 0.371 1.310 19.300 6.140 17.71 76.38 03/02/23 1.280 0.305 <0.00100 0.0698 0.238 1.000 15.700 6.080 16.53 77.56 12/04/23 4.090 0.791 <0.0500 0.193J 0.926 2.710 42.100 31.200 16.87 77.22 MW-14 12/22/10 <0.001 <0.001 <0.001 <0.002 <0.001 <0.003 <0.05 <1 13.63 77.96 91.59 06/06/11 <0.001 <0.001 <0.001 0.008 <0.001 <0.003 <0.05 <1 13.37 78.22 11/02/11 0.001 <0.001 <0.001 <0.002 <0.001 <0.003 <0.05 <1 13.14 78.45 02/15/12 <0.001 <0.001 <0.001 <0.002 <0.001 <0.003 <0.05 <1 14.08 77.51 WELL WAS NOT INCLUDED IN SAMPLING EVENT WELL WAS NOT INCLUDED IN SAMPLING EVENT WELL WAS NOT INCLUDED IN SAMPLING EVENT Page 5 of 6 Sample TOC Benzene Ethyl Benzene MTBE Naph- thalene Toluene Total Xylenes TPH-GRO TPH-DRO Initial Screening Level 0.005 0.7 0.2 0.7 1.0 10 1.0 1.0 RBCA Tier 1 Screening Level 0.3 4.0 0.2 0.7 3.0 10 10 10 Date TABLE 1 GROUNDWATER ANALYTICAL SUMMARY FORMER CIRCLE C STORE 1271 NORTH CARBONVILLE ROAD PRICE, UTAH LUST I.D. KXV DTW (feet) Groundwater Concentrations (mg/L) Facility I.D. #5000322 WTE (feet) MW-14 05/29/12 <0.001 <0.001 <0.001 <0.002 0.001 <0.003 <0.05 <1 12.16 79.43 Cont.12/19/12 <0.001 <0.001 <0.001 <0.002 <0.001 <0.003 <0.05 <1 13.98 77.61 06/28/13 <0.001 <0.001 <0.001 <0.002 0.005 <0.003 <0.05 <1 13.63 77.96 12/18/13 <0.0010 <0.0010 <0.0010 <0.0050 <0.0050 <0.0030 <0.10 <0.10 13.86 77.73 07/01/14 <0.0010 <0.0010 <0.0010 <0.0050 <0.0050 <0.0030 <0.10 <0.10 13.86 77.73 10/25/16 15.97 75.62 03/25/20 NM NM 09/22/20 <0.00100 <0.00100 <0.00100 <0.00500 <0.00100 <0.00300 <0.100 <0.100 15.92 75.67 09/20/21 <0.00100 <0.00100 <0.00100 <0.00500 <0.00100 <0.00300 <0.100 <0.100J3 17.17 74.42 03/21/22 NM NM 09/28/22 <0.00100 0.000268J <0.00100 0.00134J <0.00100 <0.00300 0.0372B,J 0.0648J 16.50 75.09 03/02/23 <0.00100 <0.00100 <0.00100 0.00373J <0.00100 <0.00300 <0.100 0.0490J,J3 15.24 76.35 12/04/23 15.70 75.89 MW-15 12/22/10 <0.001 <0.001 <0.001 <0.002 <0.001 <0.003 <0.05 <1 12.38 76.37 88.75 06/06/11 <0.001 <0.001 <0.001 <0.002 <0.001 <0.003 <0.05 <1 10.91 77.84 11/02/11 <0.001 <0.001 <0.001 <0.002 <0.001 <0.003 <0.05 <1 11.58 77.17 02/15/12 <0.001 <0.001 <0.001 <0.002 <0.001 <0.003 <0.05 <1 12.50 76.25 05/29/12 <0.001 <0.001 <0.001 <0.002 <0.001 <0.003 <0.05 <1 10.92 77.83 12/20/12 <0.001 <0.001 <0.001 <0.002 <0.001 <0.003 <0.05 <1 12.40 76.35 06/28/13 <0.001 0.004 <0.001 <0.002 0.005 <0.003 <0.05 <1 12.32 76.43 12/18/16 <0.0010 <0.0010 <0.0010 <0.0050 <0.0050 <0.0030 <0.10 <0.10 12.50 76.25 07/01/14 <0.0010 <0.0010 <0.0010 <0.0050 <0.0050 <0.0030 <0.10 <0.10 12.50 76.25 10/25/16 NM NM GP-20 <0.001 <0.002 <0.002 <0.002 <0.002 <0.002 <0.20 <0.50 18.07 GP-22 <0.001 <0.002 0.0044 <0.002 <0.002 <0.002 0.064 3.6 13.91 mg/L = Milligrams per liter WTE = Water Table Elevation RBCA = Risk Based Corrective Action NM = Not Measured TOC = Top of well casing elevation NA = Not Applicable MTBE = Methyl Tertiary Butyl Ether by EPA Method 8260 TPH-GRO = Gasoline range total petroleum hydrocarbons by EPA Method 8260 TPH-DRO = Diesel range total petroleum hydrocarbons by EPA Method 8015 Red concentrations indicate an exceedence of Initial Screening Level (ISL) J = The identification of the analyte is acceptable; the reported vanlue is an estimate J3 = The associated batch QC was outside the established quality control range for precision B = The same analyte is found in the associated blank T8 = Sample(s) received past/too close to holding time expiration. Notes: WELL WAS UNDER A VEHICLE AND COULD NOT BE ACCESSED WELL WAS UNDER A VEHICLE AND COULD NOT BE ACCESSED WELL WAS NOT LOCATED WELL WAS NOT INCLUDED IN SAMPLING EVENT WELL WAS NOT INCLUDED IN SAMPLING EVENT Page 6 of 6 APPENDIX A LABORATORY ANALYTICAL REPORT ANALYTICAL REPORT December 13, 2023 One Atlas Sample Delivery Group:L1684957 Samples Received:12/06/2023 Project Number: Description:Circle-C Report To:Jim Coletta 1775 South 4130 West, Ste A Salt Lake City, UT 84104 Entire Report Reviewed By: December 13, 2023 [Preliminary Report] Daphne Richards Project Manager Results relate only to the items tested or calibrated and are reported as rounded values. This test report shall not be reproduced, except in full, without written approval of the laboratory. Where applicable, sampling conducted by Pace Analytical National is performed per guidance provided in laboratory standard operating procedures ENV-SOP-MTJL-0067 and ENV-SOP-MTJL-0068. Where sampling conducted by the customer, results relate to the accuracy of the information provided, and as the samples are received. Pace Analytical National 12065 Lebanon Rd Mount Juliet, TN 37122 615-758-5858 800-767-5859 www.pacenational.com 1 Cp 2 Tc 3 Ss 4 Cn 5 Sr 6 Qc 7 Gl 8 Al 9 Sc ACCOUNT:PROJECT:SDG:DATE/TIME:PAGE: One Atlas L1684957 12/13/23 14:05 1 of 17 December 13, 2023 Daphne Richards Project Manager ACCOUNT:PROJECT:SDG:DATE/TIME:PAGE: One Atlas L1684957 12/13/23 14:10 1 of 17 TABLE OF CONTENTS Cp: Cover Page 1 Tc: Table of Contents 2 Ss: Sample Summary 3 Cn: Case Narrative 4 Sr: Sample Results 5 MW-7 L1684957-01 5 MW-12 L1684957-02 6 MW-13 L1684957-03 7 FIELD BLANK L1684957-04 8 TRIP BLANK L1684957-05 9 Qc: Quality Control Summary 10 Volatile Organic Compounds (GC) by Method 8015D/GRO 10 Volatile Organic Compounds (GC/MS) by Method 8260B 11 Semi-Volatile Organic Compounds (GC) by Method 3511/8015 14 Gl: Glossary of Terms 15 Al: Accreditations & Locations 16 Sc: Sample Chain of Custody 17 1 Cp 2 Tc 3 Ss 4 Cn 5 Sr 6 Qc 7 Gl 8 Al 9 Sc ACCOUNT:PROJECT:SDG:DATE/TIME:PAGE: One Atlas L1684957 12/13/23 14:05 2 of 17 ACCOUNT:PROJECT:SDG:DATE/TIME:PAGE: One Atlas L1684957 12/13/23 14:10 2 of 17 SAMPLE SUMMARY Collected by Collected date/time Received date/time MW-7 L1684957-01 GW Olaf Questereit 12/04/23 13:40 12/06/23 08:30 Method Batch Dilution Preparation Analysis Analyst Location date/time date/time Volatile Organic Compounds (GC) by Method 8015D/GRO WG2186927 1 12/11/23 21:04 12/11/23 21:04 JAH Mt. Juliet, TN Volatile Organic Compounds (GC/MS) by Method 8260B WG2186679 1 12/11/23 07:09 12/11/23 07:09 DYW Mt. Juliet, TN Semi-Volatile Organic Compounds (GC) by Method 3511/8015 WG2185412 1 12/09/23 06:24 12/09/23 20:25 MAA Mt. Juliet, TN Collected by Collected date/time Received date/time MW-12 L1684957-02 GW Olaf Questereit 12/04/23 13:00 12/06/23 08:30 Method Batch Dilution Preparation Analysis Analyst Location date/time date/time Volatile Organic Compounds (GC) by Method 8015D/GRO WG2186927 5 12/11/23 22:42 12/11/23 22:42 JAH Mt. Juliet, TN Volatile Organic Compounds (GC/MS) by Method 8260B WG2186679 1 12/11/23 07:29 12/11/23 07:29 DYW Mt. Juliet, TN Volatile Organic Compounds (GC/MS) by Method 8260B WG2188010 25 12/13/23 02:28 12/13/23 02:28 DWR Mt. Juliet, TN Semi-Volatile Organic Compounds (GC) by Method 3511/8015 WG2185412 1 12/09/23 06:24 12/09/23 20:45 MAA Mt. Juliet, TN Collected by Collected date/time Received date/time MW-13 L1684957-03 GW Olaf Questereit 12/04/23 13:20 12/06/23 08:30 Method Batch Dilution Preparation Analysis Analyst Location date/time date/time Volatile Organic Compounds (GC) by Method 8015D/GRO WG2186927 10 12/11/23 23:07 12/11/23 23:07 JAH Mt. Juliet, TN Volatile Organic Compounds (GC/MS) by Method 8260B WG2186679 50 12/11/23 08:31 12/11/23 08:31 DYW Mt. Juliet, TN Semi-Volatile Organic Compounds (GC) by Method 3511/8015 WG2185412 20 12/09/23 06:24 12/10/23 22:41 MAA Mt. Juliet, TN Collected by Collected date/time Received date/time FIELD BLANK L1684957-04 GW Olaf Questereit 12/04/23 13:30 12/06/23 08:30 Method Batch Dilution Preparation Analysis Analyst Location date/time date/time Volatile Organic Compounds (GC) by Method 8015D/GRO WG2186927 1 12/11/23 16:46 12/11/23 16:46 JAH Mt. Juliet, TN Volatile Organic Compounds (GC/MS) by Method 8260B WG2186679 1 12/11/23 07:50 12/11/23 07:50 DYW Mt. Juliet, TN Volatile Organic Compounds (GC/MS) by Method 8260B WG2188010 1 12/13/23 04:03 12/13/23 04:03 DWR Mt. Juliet, TN Semi-Volatile Organic Compounds (GC) by Method 3511/8015 WG2185412 1 12/09/23 06:24 12/09/23 21:26 MAA Mt. Juliet, TN Collected by Collected date/time Received date/time TRIP BLANK L1684957-05 GW Olaf Questereit 12/04/23 00:00 12/06/23 08:30 Method Batch Dilution Preparation Analysis Analyst Location date/time date/time Volatile Organic Compounds (GC/MS) by Method 8260B WG2186701 1 12/10/23 18:53 12/10/23 18:53 JBE Mt. Juliet, TN 1 Cp 2 Tc 3 Ss 4 Cn 5 Sr 6 Qc 7 Gl 8 Al 9 Sc ACCOUNT:PROJECT:SDG:DATE/TIME:PAGE: One Atlas L1684957 12/13/23 14:05 3 of 17 ACCOUNT:PROJECT:SDG:DATE/TIME:PAGE: One Atlas L1684957 12/13/23 14:10 3 of 17 CASE NARRATIVE All sample aliquots were received at the correct temperature, in the proper containers, with the appropriate preservatives, and within method specified holding times, unless qualified or notated within the report. Where applicable, all MDL (LOD) and RDL (LOQ) values reported for environmental samples have been corrected for the dilution factor used in the analysis. All Method and Batch Quality Control are within established criteria except where addressed in this case narrative, a non-conformance form or properly qualified within the sample results. By my digital signature below, I affirm to the best of my knowledge, all problems/anomalies observed by the laboratory as having the potential to affect the quality of the data have been identified by the laboratory, and no information or data have been knowingly withheld that would affect the quality of the data. [Preliminary Report] Daphne Richards 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: One Atlas L1684957 12/13/23 14:05 4 of 17 Daphne Richards Project Manager ACCOUNT:PROJECT:SDG:DATE/TIME:PAGE: One Atlas L1684957 12/13/23 14:10 4 of 17 SAMPLE RESULTS - 01 L1684957 MW-7 Collected date/time: 12/04/23 13:40 Volatile Organic Compounds (GC) by Method 8015D/GRO Result Qualifier MDL RDL Dilution Analysis Batch Analyte ug/l ug/l ug/l date / time TPH (GC/FID) Low Fraction 55.0 J 31.4 100 1 12/11/2023 21:04 WG2186927 (S) a,a,a-Trifluorotoluene(FID)89.9 78.0-120 12/11/2023 21:04 WG2186927 Volatile Organic Compounds (GC/MS) by Method 8260B Result Qualifier MDL RDL Dilution Analysis Batch Analyte ug/l ug/l ug/l date / time Benzene 6.05 0.0941 1.00 1 12/11/2023 07:09 WG2186679 Toluene U 0.278 1.00 1 12/11/2023 07:09 WG2186679 Ethylbenzene 0.474 J 0.137 1.00 1 12/11/2023 07:09 WG2186679 Total Xylenes U 0.174 3.00 1 12/11/2023 07:09 WG2186679 Methyl tert-butyl ether U 0.101 1.00 1 12/11/2023 07:09 WG2186679 Naphthalene U 1.00 5.00 1 12/11/2023 07:09 WG2186679 (S) Toluene-d8 90.6 80.0-120 12/11/2023 07:09 WG2186679 (S) 4-Bromofluorobenzene 94.1 77.0-126 12/11/2023 07:09 WG2186679 (S) 1,2-Dichloroethane-d4 105 70.0-130 12/11/2023 07:09 WG2186679 Semi-Volatile Organic Compounds (GC) by Method 3511/8015 Result Qualifier MDL RDL Dilution Analysis Batch Analyte ug/l ug/l ug/l date / time TPH (GC/FID) High Fraction 32.6 J 24.7 100 1 12/09/2023 20:25 WG2185412 (S) o-Terphenyl 97.4 31.0-160 12/09/2023 20:25 WG2185412 1 Cp 2 Tc 3 Ss 4 Cn 5 Sr 6 Qc 7 Gl 8 Al 9 Sc ACCOUNT:PROJECT:SDG:DATE/TIME:PAGE: One Atlas L1684957 12/13/23 14:05 5 of 17 ACCOUNT:PROJECT:SDG:DATE/TIME:PAGE: One Atlas L1684957 12/13/23 14:10 5 of 17 SAMPLE RESULTS - 02 L1684957 MW-12 Collected date/time: 12/04/23 13:00 Volatile Organic Compounds (GC) by Method 8015D/GRO Result Qualifier MDL RDL Dilution Analysis Batch Analyte ug/l ug/l ug/l date / time TPH (GC/FID) Low Fraction 5600 157 500 5 12/11/2023 22:42 WG2186927 (S) a,a,a-Trifluorotoluene(FID)93.4 78.0-120 12/11/2023 22:42 WG2186927 Volatile Organic Compounds (GC/MS) by Method 8260B Result Qualifier MDL RDL Dilution Analysis Batch Analyte ug/l ug/l ug/l date / time Benzene 714 2.35 25.0 25 12/13/2023 02:28 WG2188010 Toluene 41.8 0.278 1.00 1 12/11/2023 07:29 WG2186679 Ethylbenzene 166 3.43 25.0 25 12/13/2023 02:28 WG2188010 Total Xylenes 260 0.174 3.00 1 12/11/2023 07:29 WG2186679 Methyl tert-butyl ether 0.472 J 0.101 1.00 1 12/11/2023 07:29 WG2186679 Naphthalene 5.31 1.00 5.00 1 12/11/2023 07:29 WG2186679 (S) Toluene-d8 87.7 80.0-120 12/11/2023 07:29 WG2186679 (S) Toluene-d8 99.7 80.0-120 12/13/2023 02:28 WG2188010 (S) 4-Bromofluorobenzene 98.1 77.0-126 12/11/2023 07:29 WG2186679 (S) 4-Bromofluorobenzene 104 77.0-126 12/13/2023 02:28 WG2188010 (S) 1,2-Dichloroethane-d4 128 70.0-130 12/11/2023 07:29 WG2186679 (S) 1,2-Dichloroethane-d4 102 70.0-130 12/13/2023 02:28 WG2188010 Semi-Volatile Organic Compounds (GC) by Method 3511/8015 Result Qualifier MDL RDL Dilution Analysis Batch Analyte ug/l ug/l ug/l date / time TPH (GC/FID) High Fraction 3090 24.7 100 1 12/09/2023 20:45 WG2185412 (S) o-Terphenyl 69.5 31.0-160 12/09/2023 20:45 WG2185412 1 Cp 2 Tc 3 Ss 4 Cn 5 Sr 6 Qc 7 Gl 8 Al 9 Sc ACCOUNT:PROJECT:SDG:DATE/TIME:PAGE: One Atlas L1684957 12/13/23 14:05 6 of 17 ACCOUNT:PROJECT:SDG:DATE/TIME:PAGE: One Atlas L1684957 12/13/23 14:10 6 of 17 SAMPLE RESULTS - 03 L1684957 MW-13 Collected date/time: 12/04/23 13:20 Volatile Organic Compounds (GC) by Method 8015D/GRO Result Qualifier MDL RDL Dilution Analysis Batch Analyte ug/l ug/l ug/l date / time TPH (GC/FID) Low Fraction 42100 314 1000 10 12/11/2023 23:07 WG2186927 (S) a,a,a-Trifluorotoluene(FID)106 78.0-120 12/11/2023 23:07 WG2186927 Volatile Organic Compounds (GC/MS) by Method 8260B Result Qualifier MDL RDL Dilution Analysis Batch Analyte ug/l ug/l ug/l date / time Benzene 4090 4.71 50.0 50 12/11/2023 08:31 WG2186679 Toluene 926 13.9 50.0 50 12/11/2023 08:31 WG2186679 Ethylbenzene 791 6.85 50.0 50 12/11/2023 08:31 WG2186679 Total Xylenes 2710 8.70 150 50 12/11/2023 08:31 WG2186679 Methyl tert-butyl ether U 5.05 50.0 50 12/11/2023 08:31 WG2186679 Naphthalene 193 J 50.0 250 50 12/11/2023 08:31 WG2186679 (S) Toluene-d8 91.9 80.0-120 12/11/2023 08:31 WG2186679 (S) 4-Bromofluorobenzene 101 77.0-126 12/11/2023 08:31 WG2186679 (S) 1,2-Dichloroethane-d4 101 70.0-130 12/11/2023 08:31 WG2186679 Semi-Volatile Organic Compounds (GC) by Method 3511/8015 Result Qualifier MDL RDL Dilution Analysis Batch Analyte ug/l ug/l ug/l date / time TPH (GC/FID) High Fraction 31200 494 2000 20 12/10/2023 22:41 WG2185412 (S) o-Terphenyl 0.000 J7 31.0-160 12/10/2023 22:41 WG2185412 1 Cp 2 Tc 3 Ss 4 Cn 5 Sr 6 Qc 7 Gl 8 Al 9 Sc ACCOUNT:PROJECT:SDG:DATE/TIME:PAGE: One Atlas L1684957 12/13/23 14:05 7 of 17 ACCOUNT:PROJECT:SDG:DATE/TIME:PAGE: One Atlas L1684957 12/13/23 14:10 7 of 17 SAMPLE RESULTS - 04 L1684957 FIELD BLANK Collected date/time: 12/04/23 13:30 Volatile Organic Compounds (GC) by Method 8015D/GRO Result Qualifier MDL RDL Dilution Analysis Batch Analyte ug/l ug/l ug/l date / time TPH (GC/FID) Low Fraction U 31.4 100 1 12/11/2023 16:46 WG2186927 (S) a,a,a-Trifluorotoluene(FID)92.5 78.0-120 12/11/2023 16:46 WG2186927 Volatile Organic Compounds (GC/MS) by Method 8260B Result Qualifier MDL RDL Dilution Analysis Batch Analyte ug/l ug/l ug/l date / time Benzene U 0.0941 1.00 1 12/13/2023 04:03 WG2188010 Toluene U 0.278 1.00 1 12/11/2023 07:50 WG2186679 Ethylbenzene U 0.137 1.00 1 12/13/2023 04:03 WG2188010 Total Xylenes U 0.174 3.00 1 12/11/2023 07:50 WG2186679 Methyl tert-butyl ether U 0.101 1.00 1 12/11/2023 07:50 WG2186679 Naphthalene U 1.00 5.00 1 12/11/2023 07:50 WG2186679 (S) Toluene-d8 91.4 80.0-120 12/11/2023 07:50 WG2186679 (S) Toluene-d8 101 80.0-120 12/13/2023 04:03 WG2188010 (S) 4-Bromofluorobenzene 95.1 77.0-126 12/11/2023 07:50 WG2186679 (S) 4-Bromofluorobenzene 102 77.0-126 12/13/2023 04:03 WG2188010 (S) 1,2-Dichloroethane-d4 102 70.0-130 12/11/2023 07:50 WG2186679 (S) 1,2-Dichloroethane-d4 98.9 70.0-130 12/13/2023 04:03 WG2188010 Semi-Volatile Organic Compounds (GC) by Method 3511/8015 Result Qualifier MDL RDL Dilution Analysis Batch Analyte ug/l ug/l ug/l date / time TPH (GC/FID) High Fraction U 24.7 100 1 12/09/2023 21:26 WG2185412 (S) o-Terphenyl 95.3 31.0-160 12/09/2023 21:26 WG2185412 1 Cp 2 Tc 3 Ss 4 Cn 5 Sr 6 Qc 7 Gl 8 Al 9 Sc ACCOUNT:PROJECT:SDG:DATE/TIME:PAGE: One Atlas L1684957 12/13/23 14:05 8 of 17 ACCOUNT:PROJECT:SDG:DATE/TIME:PAGE: One Atlas L1684957 12/13/23 14:10 8 of 17 SAMPLE RESULTS - 05 L1684957 TRIP BLANK Collected date/time: 12/04/23 00:00 Volatile Organic Compounds (GC/MS) by Method 8260B Result Qualifier MDL RDL Dilution Analysis Batch Analyte ug/l ug/l ug/l date / time Benzene U 0.0941 1.00 1 12/10/2023 18:53 WG2186701 Toluene U 0.278 1.00 1 12/10/2023 18:53 WG2186701 Ethylbenzene U 0.137 1.00 1 12/10/2023 18:53 WG2186701 Total Xylenes U 0.174 3.00 1 12/10/2023 18:53 WG2186701 Methyl tert-butyl ether U 0.101 1.00 1 12/10/2023 18:53 WG2186701 Naphthalene U 1.00 5.00 1 12/10/2023 18:53 WG2186701 (S) Toluene-d8 98.2 80.0-120 12/10/2023 18:53 WG2186701 (S) 4-Bromofluorobenzene 94.4 77.0-126 12/10/2023 18:53 WG2186701 (S) 1,2-Dichloroethane-d4 106 70.0-130 12/10/2023 18:53 WG2186701 1 Cp 2 Tc 3 Ss 4 Cn 5 Sr 6 Qc 7 Gl 8 Al 9 Sc ACCOUNT:PROJECT:SDG:DATE/TIME:PAGE: One Atlas L1684957 12/13/23 14:05 9 of 17 ACCOUNT:PROJECT:SDG:DATE/TIME:PAGE: One Atlas L1684957 12/13/23 14:10 9 of 17 QUALITY CONTROL SUMMARYWG2186927 Volatile Organic Compounds (GC) by Method 8015D/GRO L1684957-01,02,03,04 Method Blank (MB) (MB) R4011308-3 12/11/23 12:15 MB Result MB Qualifier MB MDL MB RDL Analyte ug/l ug/l ug/l TPH (GC/FID) Low Fraction U 31.4 100 (S) a,a,a-Trifluorotoluene(FID)90.8 78.0-120 Laboratory Control Sample (LCS) • Laboratory Control Sample Duplicate (LCSD) (LCS) R4011308-1 12/11/23 11:02 • (LCSD) R4011308-2 12/11/23 11:26 Spike Amount LCS Result LCSD Result LCS Rec.LCSD Rec.Rec. Limits LCS Qualifier LCSD Qualifier RPD RPD Limits Analyte ug/l ug/l ug/l %%%%% TPH (GC/FID) Low Fraction 5500 5780 5150 105 93.6 72.0-127 11.5 20 (S) a,a,a-Trifluorotoluene(FID) 97.2 96.7 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: One Atlas L1684957 12/13/23 14:05 10 of 17 ACCOUNT:PROJECT:SDG:DATE/TIME:PAGE: One Atlas L1684957 12/13/23 14:10 10 of 17 QUALITY CONTROL SUMMARYWG2186679 Volatile Organic Compounds (GC/MS) by Method 8260B L1684957-01,02,03,04 Method Blank (MB) (MB) R4011483-3 12/11/23 01:38 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 94.3 80.0-120 (S) 4-Bromofluorobenzene 92.5 77.0-126 (S) 1,2-Dichloroethane-d4 100 70.0-130 Laboratory Control Sample (LCS) • Laboratory Control Sample Duplicate (LCSD) (LCS) R4011483-1 12/11/23 00:36 • (LCSD) R4011483-2 12/11/23 00:57 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 5.02 4.74 100 94.8 70.0-123 5.74 20 Toluene 5.00 4.77 4.46 95.4 89.2 79.0-120 6.72 20 Ethylbenzene 5.00 5.12 4.70 102 94.0 79.0-123 8.55 20 Total Xylenes 15.0 15.8 14.0 105 93.3 79.0-123 12.1 20 Methyl tert-butyl ether 5.00 5.54 5.03 111 101 68.0-125 9.65 20 Naphthalene 5.00 5.42 4.82 108 96.4 54.0-135 11.7 20 (S) Toluene-d8 89.1 90.1 80.0-120 (S) 4-Bromofluorobenzene 96.1 90.6 77.0-126 (S) 1,2-Dichloroethane-d4 101 99.9 70.0-130 1 Cp 2 Tc 3 Ss 4 Cn 5 Sr 6 Qc 7 Gl 8 Al 9 Sc ACCOUNT:PROJECT:SDG:DATE/TIME:PAGE: One Atlas L1684957 12/13/23 14:05 11 of 17 ACCOUNT:PROJECT:SDG:DATE/TIME:PAGE: One Atlas L1684957 12/13/23 14:10 11 of 17 QUALITY CONTROL SUMMARYWG2186701 Volatile Organic Compounds (GC/MS) by Method 8260B L1684957-05 Method Blank (MB) (MB) R4011844-3 12/10/23 18:26 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 102 80.0-120 (S) 4-Bromofluorobenzene 102 77.0-126 (S) 1,2-Dichloroethane-d4 104 70.0-130 Laboratory Control Sample (LCS) • Laboratory Control Sample Duplicate (LCSD) (LCS) R4011844-1 12/10/23 17:24 • (LCSD) R4011844-2 12/10/23 17:45 Spike Amount LCS Result LCSD Result LCS Rec.LCSD Rec.Rec. Limits LCS Qualifier LCSD Qualifier RPD RPD Limits Analyte ug/l ug/l ug/l %%%%% Benzene 5.00 4.73 4.62 94.6 92.4 70.0-123 2.35 20 Toluene 5.00 4.74 4.90 94.8 98.0 79.0-120 3.32 20 Ethylbenzene 5.00 4.80 4.69 96.0 93.8 79.0-123 2.32 20 Total Xylenes 15.0 13.7 14.4 91.3 96.0 79.0-123 4.98 20 Methyl tert-butyl ether 5.00 4.46 4.77 89.2 95.4 68.0-125 6.72 20 Naphthalene 5.00 4.14 4.65 82.8 93.0 54.0-135 11.6 20 (S) Toluene-d8 103 108 80.0-120 (S) 4-Bromofluorobenzene 106 112 77.0-126 (S) 1,2-Dichloroethane-d4 102 103 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: One Atlas L1684957 12/13/23 14:05 12 of 17 ACCOUNT:PROJECT:SDG:DATE/TIME:PAGE: One Atlas L1684957 12/13/23 14:10 12 of 17 QUALITY CONTROL SUMMARYWG2188010 Volatile Organic Compounds (GC/MS) by Method 8260B L1684957-02,04 Method Blank (MB) (MB) R4011800-2 12/12/23 18:57 MB Result MB Qualifier MB MDL MB RDL Analyte ug/l ug/l ug/l Benzene U 0.0941 1.00 Ethylbenzene U 0.137 1.00 (S) Toluene-d8 101 80.0-120 (S) 4-Bromofluorobenzene 99.7 77.0-126 (S) 1,2-Dichloroethane-d4 102 70.0-130 Laboratory Control Sample (LCS) (LCS) R4011800-1 12/12/23 18:15 Spike Amount LCS Result LCS Rec.Rec. Limits LCS Qualifier Analyte ug/l ug/l %% Benzene 5.00 4.80 96.0 70.0-123 Ethylbenzene 5.00 4.73 94.6 79.0-123 (S) Toluene-d8 96.1 80.0-120 (S) 4-Bromofluorobenzene 119 77.0-126 (S) 1,2-Dichloroethane-d4 105 70.0-130 1 Cp 2 Tc 3 Ss 4 Cn 5 Sr 6 Qc 7 Gl 8 Al 9 Sc ACCOUNT:PROJECT:SDG:DATE/TIME:PAGE: One Atlas L1684957 12/13/23 14:05 13 of 17 ACCOUNT:PROJECT:SDG:DATE/TIME:PAGE: One Atlas L1684957 12/13/23 14:10 13 of 17 QUALITY CONTROL SUMMARYWG2185412 Semi-Volatile Organic Compounds (GC) by Method 3511/8015 L1684957-01,02,03,04 Method Blank (MB) (MB) R4010333-1 12/09/23 19:04 MB Result MB Qualifier MB MDL MB RDL Analyte ug/l ug/l ug/l TPH (GC/FID) High Fraction U 24.7 100 (S) o-Terphenyl 96.0 31.0-160 Laboratory Control Sample (LCS) • Laboratory Control Sample Duplicate (LCSD) (LCS) R4010333-2 12/09/23 19:24 • (LCSD) R4010333-3 12/09/23 19:45 Spike Amount LCS Result LCSD Result LCS Rec.LCSD Rec.Rec. Limits LCS Qualifier LCSD Qualifier RPD RPD Limits Analyte ug/l ug/l ug/l %%%%% TPH (GC/FID) High Fraction 1500 1670 1730 111 115 50.0-150 3.53 20 (S) o-Terphenyl 85.0 85.5 31.0-160 1 Cp 2 Tc 3 Ss 4 Cn 5 Sr 6 Qc 7 Gl 8 Al 9 Sc ACCOUNT:PROJECT:SDG:DATE/TIME:PAGE: One Atlas L1684957 12/13/23 14:05 14 of 17 ACCOUNT:PROJECT:SDG:DATE/TIME:PAGE: One Atlas L1684957 12/13/23 14:10 14 of 17 GLOSSARY OF TERMS Guide to Reading and Understanding Your Laboratory Report The information below is designed to better explain the various terms used in your report of analytical results from the Laboratory. This is not intended as a comprehensive explanation, and if you have additional questions please contact your project representative. Results Disclaimer - Information that may be provided by the customer, and contained within this report, include Permit Limits, Project Name, Sample ID, Sample Matrix, Sample Preservation, Field Blanks, Field Spikes, Field Duplicates, On-Site Data, Sampling Collection Dates/Times, and Sampling Location. Results relate to the accuracy of this information provided, and as the samples are received. Abbreviations and Definitions MDL Method Detection Limit. RDL Reported Detection Limit. Rec.Recovery. RPD Relative Percent Difference. SDG Sample Delivery Group. (S) Surrogate (Surrogate Standard) - Analytes added to every blank, sample, Laboratory Control Sample/Duplicate and Matrix Spike/Duplicate; used to evaluate analytical efficiency by measuring recovery. Surrogates are not expected to be detected in all environmental media. U Not detected at the Reporting Limit (or MDL where applicable). Analyte The name of the particular compound or analysis performed. Some Analyses and Methods will have multiple analytes reported. Dilution If the sample matrix contains an interfering material, the sample preparation volume or weight values differ from the standard, or if concentrations of analytes in the sample are higher than the highest limit of concentration that the laboratory can accurately report, the sample may be diluted for analysis. If a value different than 1 is used in this field, the result reported has already been corrected for this factor. Limits These are the target % recovery ranges or % difference value that the laboratory has historically determined as normal for the method and analyte being reported. Successful QC Sample analysis will target all analytes recovered or duplicated within these ranges. Qualifier This column provides a letter and/or number designation that corresponds to additional information concerning the result reported. If a Qualifier is present, a definition per Qualifier is provided within the Glossary and Definitions page and potentially a discussion of possible implications of the Qualifier in the Case Narrative if applicable. Result The actual analytical final result (corrected for any sample specific characteristics) reported for your sample. If there was no measurable result returned for a specific analyte, the result in this column may state “ND” (Not Detected) or “BDL” (Below Detectable Levels). The information in the results column should always be accompanied by either an MDL (Method Detection Limit) or RDL (Reporting Detection Limit) that defines the lowest value that the laboratory could detect or report for this analyte. Uncertainty (Radiochemistry)Confidence level of 2 sigma. Case Narrative (Cn) A brief discussion about the included sample results, including a discussion of any non-conformances to protocol observed either at sample receipt by the laboratory from the field or during the analytical process. If present, there will be a section in the Case Narrative to discuss the meaning of any data qualifiers used in the report. Quality Control Summary (Qc) This section of the report includes the results of the laboratory quality control analyses required by procedure or analytical methods to assist in evaluating the validity of the results reported for your samples. These analyses are not being performed on your samples typically, but on laboratory generated material. Sample Chain of Custody (Sc) This is the document created in the field when your samples were initially collected. This is used to verify the time and date of collection, the person collecting the samples, and the analyses that the laboratory is requested to perform. This chain of custody also documents all persons (excluding commercial shippers) that have had control or possession of the samples from the time of collection until delivery to the laboratory for analysis. Sample Results (Sr) This section of your report will provide the results of all testing performed on your samples. These results are provided by sample ID and are separated by the analyses performed on each sample. The header line of each analysis section for each sample will provide the name and method number for the analysis reported. Sample Summary (Ss)This section of the Analytical Report defines the specific analyses performed for each sample ID, including the dates and times of preparation and/or analysis. Qualifier Description J The identification of the analyte is acceptable; the reported value is an estimate. J7 Surrogate recovery cannot be used for control limit evaluation due to dilution. 1 Cp 2 Tc 3 Ss 4 Cn 5 Sr 6 Qc 7 Gl 8 Al 9 Sc ACCOUNT:PROJECT:SDG:DATE/TIME:PAGE: One Atlas L1684957 12/13/23 14:05 15 of 17 ACCOUNT:PROJECT:SDG:DATE/TIME:PAGE: One Atlas L1684957 12/13/23 14:10 15 of 17 Pace Analytical National 12065 Lebanon Rd Mount Juliet, TN 37122 Alabama 40660 Nebraska NE-OS-15-05 Alaska 17-026 Nevada TN000032021-1 Arizona AZ0612 New Hampshire 2975 Arkansas 88-0469 New Jersey–NELAP TN002 California 2932 New Mexico ¹TN00003 Colorado TN00003 New York 11742 Connecticut PH-0197 North Carolina Env375 Florida E87487 North Carolina ¹DW21704 Georgia NELAP North Carolina ³41 Georgia ¹923 North Dakota R-140 Idaho TN00003 Ohio–VAP CL0069 Illinois 200008 Oklahoma 9915 Indiana C-TN-01 Oregon TN200002 Iowa 364 Pennsylvania 68-02979 Kansas E-10277 Rhode Island LAO00356 Kentucky ¹ ⁶KY90010 South Carolina 84004002 Kentucky ²16 South Dakota n/a Louisiana AI30792 Tennessee ¹ ⁴2006 Louisiana LA018 Texas T104704245-20-18 Maine TN00003 Texas ⁵LAB0152 Maryland 324 Utah TN000032021-11 Massachusetts M-TN003 Vermont VT2006 Michigan 9958 Virginia 110033 Minnesota 047-999-395 Washington C847 Mississippi TN00003 West Virginia 233 Missouri 340 Wisconsin 998093910 Montana CERT0086 Wyoming A2LA A2LA – ISO 17025 1461.01 AIHA-LAP,LLC EMLAP 100789 A2LA – ISO 17025 ⁵1461.02 DOD 1461.01 Canada 1461.01 USDA P330-15-00234 EPA–Crypto TN00003 ACCREDITATIONS & LOCATIONS ¹ Drinking Water ² Underground Storage Tanks ³ Aquatic Toxicity ⁴ Chemical/Microbiological ⁵ Mold ⁶ Wastewater n/a Accreditation not applicable * Not all certifications held by the laboratory are applicable to the results reported in the attached report. * Accreditation is only applicable to the test methods specified on each scope of accreditation held by Pace Analytical. 1 Cp 2 Tc 3 Ss 4 Cn 5 Sr 6 Qc 7 Gl 8 Al 9 Sc ACCOUNT:PROJECT:SDG:DATE/TIME:PAGE: One Atlas L1684957 12/13/23 14:05 16 of 17 ACCOUNT:PROJECT:SDG:DATE/TIME:PAGE: One Atlas L1684957 12/13/23 14:10 16 of 17