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HomeMy WebLinkAboutDERR-2025-001176Arcadis U.S., Inc. 2100 Georgetown Drive, Suite 402 Sewickley Pennsylvania 15143 Phone: 724 934 9507 Fax: 724 742 9189 www.arcadis.com Mr. Mark Crim Utah Department of Environmental Quality Division of Environmental Response and Remediation P.O. Box 144840 195 North 1950 West Salt Lake City, Utah 84114-4840 Date: February 6, 2025 Our Ref: 30063821 Subject: Post-Corrective Action Soil Assessment Former Texaco Station No. 30-1661 974 North 900 West Salt Lake City, Utah Utah DERR Facility ID No.: 4002279 Utah DERR LUST ID: ELIH Dear Mr. Crim, On behalf of Chevron Environmental Management Company (CEMC), Arcadis U.S., Inc. (Arcadis) has prepared the attached Post-Corrective Action Soil Assessment for the Former Texaco Station No. 30-1661 site located at 974 North 900 West, Salt Lake City, Utah. In August 2024, the soil assessment was conducted in accordance with the December 20, 2023, Post-Corrective Action Soil Sampling Work Plan (Work Plan), prepared by Arcadis, and additional investigation as requested in the Utah Department of Environmental Quality (DEQ) Division of Environmental Response and Remediation (DERR) response letter, dated January 31, 2024. At the end of 2024 the project transitioned to AECOM as the environmental consultant for CEMC. Additional information will be communicated by CEMC. Should you have any questions regarding this submittal, please do not hesitate to contact me. Sincerely, Arcadis U.S., Inc. Gerald A. Robinson Project Manager Email: Gerald.robinson@arcadis.com Direct Line: 724.934.9507 CC. John Amato, CEMC (electronic copy) 1/4 Arcadis U.S., Inc. 2100 Georgetown Drive Suite 402 Sewickley, PA 15143 United States Phone: 724 742 9180 www.arcadis.com Mr. Mark Crim Utah Department of Environmental Quality Division of Environmental Response and Remediation 195 North 1950 West Salt Lake City, UT 84116 Date: February 6, 2025 Our Ref: 30063821 Subject: Post-Corrective Action Soil Assessment Former Texaco Station No. 30-1661 974 North 900 West, Salt Lake City, Utah Utah DERR Facility Identification No. 4002279 Utah DERR LUST ID: ELIH Dear Mr. Crim, On behalf of Chevron Environmental Management Company (CEMC), Arcadis U.S., Inc. (Arcadis) has prepared this Post-Corrective Action Soil Assessment to summarize field activities completed at the former Texaco Station No. 30-1661 located at 974 North 900 West, Salt Lake City, Utah (site; Figure 1). The soil assessment was conducted in accordance with the December 20, 2023, Post-Corrective Action Soil Sampling Work Plan (Work Plan), prepared by Arcadis, and additional investigation as requested in the Utah Department of Environmental Quality (DEQ) Division of Environmental Response and Remediation (DERR) response letter, dated January 31, 2024. Introduction The Corrective Action Completion Report (CACR) submitted by Arcadis on April 29, 2022, summarized remediation activities, pre-remediation soil sampling results (baseline soil sampling results) as well as the first post-remedy performance groundwater monitoring event performed after the installation of the permeable reactive barrier (PRB) trenches on site. As part of the PRB trench construction, soil baseline (sidewall) samples were collected from each trench in November 2021. The samples were submitted for laboratory analysis of benzene, toluene, ethylbenzene, and total xylenes (BTEX), methyl tertiary butyl ether (MTBE), naphthalene, total petroleum hydrocarbons as gasoline range organics (TPH-GRO), total petroleum hydrocarbons as diesel range organics (TPH-DRO), sulfate and total iron and the results were submitted in the CACR. The Utah DEQ DERR issued a directive on October 5, 2023, following their review of the CACR and requested a post-corrective action soil sampling plan. In the Work Plan, prepared by Arcadis, four confirmation soil samples (T-W-N-6_P, T-W-S-5_P, T-C-N-6_P, and T-E-S-7_P) were proposed to be collected at the same depths of the pre-remedy PRB sidewall locations. Additional investigation at six locations (GPTEX-4, MWTEX-4, GPTEX-2/SB- 1, HA-15, HA-18, and HA-22) were requested by the Utah DEQ DERR in a letter dated January 31, 2024. Mr. Mark Crim Utah Department of Environmental Quality February 6, 2025 www.arcadis.com 2/4 Chevron 301661 Post-Corrective Soil Sampling Results Letter 2024_draft (002) Soil Sampling Methodology Prior to the start of intrusive work, Arcadis marked the proposed soil boring locations with white paint and obtained a Blue Stakes of Utah 811 ticket for the soil assessment activities. Arcadis retained GPRS, a private utility locating company, to locate and mark any potential subsurface utilities not marked by the Blue Stakes program within a 10 foot-diameter perimeter centered on each of the proposed locations. Between August 12 and 13, 2024, ten (10) soil borings were advanced with a hand auger to pre-determined depths, based on historical sampled depths, ranging from 4 to 10 feet below ground surface (bgs). The locations of the soil borings are shown on Figure 2, and soil boring logs are included as Attachment 1. Soil samples were labeled, placed in sealed plastic sealable bags, immediately placed on ice in a chilled cooler, and transported to a National Environmental Laboratory Accreditation Program (NELAP)-certified analytical laboratory under chain-of-custody procedures. A total of 16 soil samples were collected from 15 co-located depth intervals and analyzed for the following constituents:  BTEX, naphthalene, and MTBE by United States Environmental Protection Agency (USEPA) Method 8260B; and  TPH-GRO and TPH-DRO by USEPA Method 8015;  Sulfate and total iron by USEPA Method 9056A. In addition, samples were collected for fractional organic carbon (foc) by American Standard Testing Method D2974. Total petroleum hydrocarbons as oil range organics (TPH-ORO) by USEPA Method 8015 were also collected from co-located sample intervals, although TPH-ORO is not a historical site contaminant of concern. Samples were submitted to Pace Analytical National Center for Testing & Innovation under standard chain-of- custody protocols. Results Analysis Analytical results from samples collected as part of the post-corrective action soil assessment are summarized in Table 1 and presented on Figure 3. The analytical report is included in Attachment 2. Based on site conditions and because impacts were detected within 30 feet of the property boundary and/or offsite utilities, the ISLs for soil are considered applicable for soil borings located along the western portion of the site (soil borings T-W-N-6, T-W- S-5, GPTEX-2/SB-1, HA-15, and HA-22); Tier 1 SLs are applicable for soil borings located within the interior of the site (soil borings T-C-N-6, T-E-S-7, MWTEX-4, GPTEX-4 and HA-18) that are greater than 30 feet from the property boundary and/or utilities. Naphthalene, MTBE, toluene, and total xylenes were not detected or were detected at concentrations less than the respective ISLs in the post-corrective action soil samples. The following constituent concentrations were detected in soil borings located within 30 feet of the property boundary and/or utilities exceeding the Utah LUST ISLs: - Benzene was detected above the ISL (0.2 milligrams per kilogram [mg/kg]) in two co-located soil samples, including T-W-N-6 at 6 feet bgs (0.327 mg/kg), and HA-22 at 4 to 5 feet bgs (0.389 mg/kg). - TPH-GRO was detected above the ISL (150 mg/kg) in five co-located soil samples, including T-W-N-6 at 6 feet bgs (1,960 mg/kg), T-W-S-5 at 5 feet bgs (1,840 mg/kg), GPTEX-2/SB-1 at 4 to 5 feet bgs (1,360 mg/kg), HA-15 at 4 to 5 feet bgs (1,900 mg/kg), and HA-22 at 4 to 5 feet bgs (3,410 mg/kg). Mr. Mark Crim Utah Department of Environmental Quality February 6, 2025 www.arcadis.com 3/4 Chevron 301661 Post-Corrective Soil Sampling Results Letter 2024_draft (002) The following constituent concentrations were detected in soil borings located greater than 30 feet from the property boundary and/or utilities exceeding the Tier 1 SLs: - TPH-DRO was detected above the Tier 1 SL (5,000 mg/kg) in one co-located soil sample from HA-18 at 4 to 5 feet bgs (7,920 J (estimated concentration) mg/kg). - TPH-GRO was detected above the Tier 1 SL (1,500 mg/kg) in four co-located soil samples, including T-C- N-6 at 6 feet bgs (1,760 mg/kg and 2,870 mg/kg [duplicate]), and HA-18 at 4 to 5 feet bgs (10,900 mg/kg), 5 to 6 feet bgs (3,240 mg/kg) and 6 to 7 feet bgs (2,280 mg/kg) As noted previously, the soil samples were also analyzed for sulfate, iron, and fractional organic carbon. Although there are no ISLs or Tier 1 SLs corresponding with these constituents, the analytical results are included in Table 1. As noted previously, TPH-ORO is not a historical site constituent of concern and there is not historical data for comparison. None of the detected concentrations for TPH-ORO exceeded the ISL or Tier 1 SL, as applicable to the location criteria. Although the concentrations detected at two co-located sample intervals, including MWTEX-4 at 4 to 5 feet bgs (2,240 mg/kg) and HA-18 at 4 to 5 feet bgs 7,920 J mg/kg) were above the ISL for TPH-ORO (1,000 mg/kg), the applicable standard for these two locations is the Tier 1 SL (10,000 mg/kg) which was not exceeded. The analytical results are included in Table 1. Conclusion and Recommendations The nature and extent of impacts at the site have been adequately characterized in accordance with Utah Code R311. Recent soil sampling has been completed to evaluate remedial effectiveness at locations of historically reported exceedances of the Utah LUST ISL and Tier 1 SL. Groundwater sampling conducted following installation of the PRB activities completed in 2021 demonstrates impacts are decreasing and/or are stable. The recent soil analysis data indicates that TPH-GRO is the primary constituent that exceeds the Tier 1 SL. In general, TPH-GRO constituents are preferentially adsorbed in soil organic carbon due to their high octanol-water partition coefficient (logKow > 5). The fraction of organic carbon (foc) data at the site is significantly higher than 0.01% which indicates that TPH-GRO is sorbed onto the soil organic carbon and less available for bioremediation to be effective over a short period. Additionally, limited effectiveness for bioremediation in groundwater could be attributed to the desorption of the constituents sorbed onto the soil organic carbon. The remaining sulfate will likely support continued degradation of COCs detected in groundwater which will eventually support the reduction of the soil impacts. Additionally, benzene concentrations that historically exceeded the Utah LUST ISLs are compared to the current benzene concentrations to calculate a percent reduction. Table 1 summarizes the reduction percent. Data demonstrate volatile organic compounds are being reduced by the sulfate remedial technology. Sulfate concentrations remain elevated; therefore, impacts in soil and groundwater are expected to continually attenuate. Mr. Mark Crim Utah Department of Environmental Quality February 6, 2025 www.arcadis.com 4/4 Chevron 301661 Post-Corrective Soil Sampling Results Letter 2024_draft (002) Sincerely, Arcadis U.S., Inc. Gerald A. Robinson Taura Nichols P.E. Project Manager Certified Consultant CC-0247 Utah PE License #8568538-2202 Email: gerald.robinson@arcadis.com Direct Line: 724.934.9507 Mobile: 412.735.2749 CC. John Amato, CEMC Enclosures: Table Figures Attachment 1 – Soil Boring Logs Attachment 2 – Laboratory Report Tables Table 1 Soil Analytical Results Former Texaco Station No. 30-1661 974 North 900 West Salt Lake City, Utah TPH-GRO (mg/kg) TPH-DRO (mg/kg) TPH-ORO (mg/kg) Benzene (mg/kg) Toluene (mg/kg) Ethylbenzene (mg/kg) Total Xylenes (mg/kg) Total BTEX MTBE (mg/kg) Naphthalene (mg/kg) Iron (mg/kg) Sulfate (mg/kg) 150 500 1,000 0.2 9 5 142 --0.3 51 ------ 1,500 5,000 10,000 0.9 25 23 142 --0.3 51 ------ 11/3/2021 6.0 1,980 196 --0.638 2.92 0.0575 0.657 4.27 0.00192 U 3.77 11,700 23.7 J 8/13/2024 6.0 1,960 31.1 7.54 0.327 0.353 U 0.134 J 0.113 J 0.63 0.0706 U 0.883 U 6,040 497 0.00900 1.56% 11/3/2021 5.0 713 265 --0.00692 0.082 0.00763 U 0.0453 0.14 0.00153 U 0.546 9,860 63.7 8/13/2024 5.0 1,840 298 34.2 0.0312 U 0.156 U 0.0348 J 0.0726 J 0.15 0.0312 U 0.390 U 10,600 339 0.00390 0.68% 11/3/2021 6.0 1,730 179 --0.742 9.79 0.106 0.633 11.27 0.0146 U 3.30 13,500 36.2 J 8/13/2024 6.0 1,760 [2,870]169 J [57.2 J]10.5 [6.13 U] 0.112 [0.146] 0.0518 J [0.0807 J] 0.0915 [0.228] 0.279 [0.467]0.03 0.0342 U [0.0423 U] 0.428 U [0.528 U] 4,170 [6,000]523 [558]0.00590 1.01% 11/3/2021 7.0 1,520 354 --0.395 0.306 0.0151 J 0.0891 0.80 0.00972 U 2.85 11,300 25.8 J 8/13/2024 7.0 423 69.8 224 0.334 0.00958 0.0711 0.0429 0.46 0.00140 U 0.0175 U 7,970 340 0.00750 1.30% 6/12/2001 4-5 70 18.0 --0.810 0.21 37.7 1.83 40.55 0.500 U 9.20 ---- 8/12/2024 4-5 1,360 148 12.4 0.0282 U 0.141 U 0.0705 U 0.183 U 0.21 0.0282 U 0.352 U 8,460 101 0.00330 0.57% 6/12/2001 3-4 44 14.0 --0.550 1.10 1.20 3.04 5.89 0.0500 U 1.60 ---- 8/13/2024 3-4 59.9 42.4 185 0.00342 0.00518 J 0.00709 0.0300 0.04 0.00232 U 0.0279 J 7,360 56.4 J 0.03130 5.39% 6/12/2001 5-6 141 79.0 --0.400 0.0500 U 1.36 0.22 2.01 0.0500 U 3.90 ---- 8/12/2024 4-5 446 478 2,240 0.244 0.0272 0.107 0.183 0.56 0.00138 U 0.149 10,800 17.1 J 0.00840 1.46% 6/12/2001 9-10 170 59.0 --0.530 0.0500 U 6.10 8.35 15.01 0.0500 U 3.90 ---- 8/12/2024 9-10 461 50.6 15.0 0.340 0.0192 0.992 0.184 1.54 0.00166 U 2.97 6,390 53.8 0.00420 0.73% 9/9/2013 4-5 920 J 200 --0.590 0.130 J 7.80 0.520 1.18 -------- 8/12/2024 4-5 1,900 134 5.91 0.0333 U 0.167 U 0.101 0.0781 J 0.24 0.0333 U 0.417 U 11,500 436 0.00440 0.76% 9/10/2013 4-5 1,900 J 8,400 J --0.066 J 0.420 U 1.5 0.420 U 1.95 -------- 8/12/2024 4-5 10,900 7,920 J 7,920 J 0.074 0.277 U 0.585 0.298 J 0.62 0.0554 U 3.58 5,700 250 0.02170 3.74% 9/10/2013 5-6 2,500 J 2,300 --0.370 U 0.370 U 0.210 J 0.370 U 0.66 -------- 8/12/2024 5-6 3,240 2,480 981 0.0967 U 0.484 U 0.242 U 0.143 J 0.55 0.0967 U 1.21 U 12,400 560 0.01730 2.99% 9/10/2013 6-7 180 J 110 --0.310 U 0.310 U 0.310 U 0.310 U 0.16 -------- 8/12/2024 6-7 2,280 387 303 0.0411 U 0.206 U 0.103 U 0.0615 J 0.24 0.0411 U 0.514 U 8,090 344 0.03310 5.71% 9/9/2013 4-5 2,100 J 180 --0.720 22 0.160 J 2.00 24.8 -------- 8/12/2024 4-5 3,410 151 5.25 J 0.389 0.372 U 0.352 0.773 1.70 0.0745 U 0.443 J 8,070 505 0.01060 1.83% 9/9/2013 5-6 910 J 140 --1.0 0.120 J 14 2.20 3.32 -------- 8/12/2024 5-6 76.7 4.54 J 5.33 J 0.0401 0.00296 J 0.0101 0.0118 0.06 0.00169 U 0.0133 J 11,300 526 0.00470 0.80% 9/9/2013 6-7 12 J 11 UJ --0.210 0.0046 J 0.150 0.021 0.24 -------- 8/12/2024 6-7 49.2 7.94 3.70 J 0.0124 0.00900 U 0.0107 0.0107 J 0.04 0.00180 U 0.0108 J 12,600 531 0.00470 0.80% Notes: ID = Identification ft = Feet TPH-DRO = Total petroleum hydrocarbons, diesel range organics(C10-C28) by GC according to USEPA Method 8015 = Values Highlighted Grey Exceed Tier 1 Screening Levels TPH-ORO = Total petroleum hydrocarbons, oil range organics (C28-C40) by GC according to USEPA Method 8015D Bold = Concentrations exceeds laboratory Initial Screening Levels VOCs = Volatile Organic Compounds by GC according to USEPA Method 8260 Grey = historical soil sample Additional analytes by USPEA Method 8260B: mg/kg = Milligrams per kilogram MTBE = Methyl tertiary-butyl ether J = Estimated Value between the method detection limit (MDL) and reported detection limit (RDL).Naph = Naphthalene -- = Not analyzed Iron by ICP according to USEPA Method 6010B B = The same analyte is found in the associated blank Sulfate according to USEPA Method 9056A U = The compound was analyzed for but not detected. The associated value is the RDL.USEPA = United States Environmental Protection Agency HA-15 HA-18 HA-22 MWTEX-4 GPTEX-4 Location ID Date Sample Depth (ft) Benzene % Reduction 97% 15% 85% T-W-N-6 T-E-S-7 GPTEX-2 TPH-GRO = Total petroleum hydrocarbons, gasoline range organics (C6-C12) by GC according to United States Environmental Protection Agency (USEPA) Method 8015 NA 49% Fractional Organic Matter (%) Fractional Organic Carbon (g C/g soil) 94% 96% 46% 73% 74% NA 94% TPH and VOCs Biodegradation Parameters 99% 36% 39% Tier 1 Screening Level Initial Screening Level T-C-N-6 T-W-S-5 https://arcadiso365.sharepoint.com/teams/portfolio-817733/Shared Documents/301661 Salt Lake City/4 Deliverables/9 - Draft Reports/2024 Post-Corrective Soil Assessment/Tables/Soil Table Comparison v1_FOC 1/1 Figures PROJECT LOCATION SITE LOCATION MAP GRAPHIC SCALE 0 2,000'4,000' REFERENCE: BASE MAP USGS 7.5 MINUTE QUADRANGLE, SALT LAKE CITY NORTH, UT, 2023. FORMER TEXACO STATION NO. 30-1661 974 NORTH 900 WEST, SALT LAKE CITY, UTAH POST-CORRECTIVE ACTION SOIL ASSESSMENT 1 IM A G E S : A r c a d i s L o g o . p n g U T _ S a l t _ L a k e _ C i t y _ N o r t h _ 2 0 2 3 0 7 3 1 _ T M . j p g XR E F S : PR O J E C T N A M E : -- - - C: \ U s e r s \ B S S m a l l \ D C \ A C C D o c s \ A r c a d i s A C C U S \ A U S - 9 9 9 9 9 9 9 9 - C H E V _ 3 0 1 6 6 1 _ S A L T L A K E C I T Y _ U T \ P r o j e c t F i l e s \ 1 0 _ W I P \ 1 0 T _ A R C _ E N V \ 2 0 2 4 \ 0 1 - D W G \ G E N - F 0 1 - S I T E L O C A T I O N M A P . d w g L A Y O U T : 1 S A V E D : 11 / 1 1 / 2 0 2 4 8 : 2 8 A M A C A D V E R : 24 . 2 S ( L M S T E C H ) P A G E S E T U P : -- - - P L O T S T Y L E T A B L E : PL T F U L L . C T B P L O T T E D : 11 / 1 1 / 2 0 2 4 8 : 2 8 A M B Y : SM A L L , B R I A N UTAH AREA LOCATION FIGURE X X X X X X X X X X X X X X X W W W W W W W W W W W W W W W W W W W W W W W W W W W W W W W G G G G G G G G G G G G G G G G G G S S S S S S S S S S S S T T T T T T E E E E E E D D D E E E E E E E E E MWTEX-13 GP-3 GP-4 GP-5 GP-6 GP-7 GP-8 MW-13 MW-14 MW-10 SB-1 GPTEX-2 GPTEX-3 GPTEX-4 GPTEX-5 MWTEX-1 MWTEX-5 MWTEX-6 GPTEX-1 4' S I D E W A L K (A 1 2 8 . 0 ' R . O . W . ) 90 0 W E S T S T R E E T U D O T P R O J E C T # R - 1 5 - 7 ( 1 5 4 ) 3 1 1 I N T E R S T A T E 1 5 LAWN LAWN LAWN FREEWAY SOUND WALL 6" CURB WALL (TYP.) POOR CONDITION LANDSCAPING SIGN BASE BENCHMARK TOP NW BOLT 12" WATERWAY BOLLARD MARKED UTILITY TYPE UNKNOWN 6" CURB WALL (TYP.) ASPHALT AP P R O X I M A T E AP P R O X I M A T E AP P R O X I M A T E AP P R O X I M A T E AP P R O X I M A T E APPROXIMATE HA-1 HA-2 HA-3 HA-5 HA-6 HA-7 HA-8 HA-9 HA-10 HA-11 HA-12 HA-13 HA-14 HA-15 HA-16 HA-17 HA-18 HA-19 HA-20 HA-21 HA-22 HA-23 HA-24 HA-25 HA-26 HA-27 HA-28 HA-29 HA-30 SB-2 FORMER STATION BUILDING FORMER TANK BASIN IDW STAGING AREA MWTEX-7 MWTEX-2 MWTEX-3 MWTEX-4 MWTEX-8 MWTEX-9 MWTEX-10 MWTEX-11 MWTEX-12 MWTEX-14 T-C-N-6 T-W-N-6 T-E-S-7 T-W-S-5 T-W-N-6 T-C-N-6 T-E-S-7 HA-22 HA-15 T-W-S-5 GPTEX-2/SB-1 MWTEX-4 GPTEX-4 HA-18 FORMER TEXACO STATION NO. 30-1661 974 NORTH 900 WEST, SALT LAKE CITY, UTAH POST-CORRECTIVE ACTION SOIL ASSESSMENT FIGURE 2 IM A G E S : A r c a d i s L o g o . p n g XR E F S : G E N - X - D - T I T L E G E N - X - B A S E M A P PR O J E C T N A M E : -- - - C: \ U s e r s \ B S S m a l l \ D C \ A C C D o c s \ A r c a d i s A C C U S \ A U S - 9 9 9 9 9 9 9 9 - C H E V _ 3 0 1 6 6 1 _ S A L T L A K E C I T Y _ U T \ P r o j e c t F i l e s \ 1 0 _ W I P \ 1 0 T _ A R C _ E N V \ 2 0 2 4 \ 0 1 - D W G \ G E N - F 0 2 - S I T E U T I L I T Y M A P . d w g L A Y O U T : 2 S A V E D : 11 / 1 1 / 2 0 2 4 1 1 : 5 8 A M A C A D V E R : 24 . 2 S ( L M S T E C H ) P A G E S E T U P : -- - - P L O T S T Y L E T A B L E : -- - - PL O T T E D : 11 / 1 1 / 2 0 2 4 3 : 5 8 P M B Y : SM A L L , B R I A N NOTES: 1.BASE MAP PERFORMED ON SEPTEMBER 13, 2013 BY BINGHAM ENGINEERING, INC. 2.HORIZONTAL DATUM IS NORTH AMERICAN DATUM OF 1983 (NAD83). VERTICAL DATUM IS NATIONAL GEODETIC VERTICAL DATUM OF 1988 (NGVD88). LEGEND: PROPERTY LINE (APPROXIMATE) EXISTING FENCE TREE GAS LINE WATER LINE TELEPHONE LINE UNDERGROUND ELECTRIC LINE SANITARY SEWER STORM SEWER LIMITS OF TRENCH EXCAVATION (ARCADIS 2022) UTILITY POLE FLAG POLE MONITORING WELL LOCATION SOIL BORING LOCATION (UNDERWOOD ENVIRONMENTAL 8/2000) SOIL BORING LOCATION (SECTION 6/2001) SOIL BORING LOCATION (ARCADIS 2011) SOIL BORING LOCATION (ARCADIS 2013) SOIL BORING LOCATION (ARCADIS 2021) SOIL BORING LOCATION (ARCADIS 2024) SITE UTILITY MAP 0 GRAPHIC SCALE 30'15' X X X X X X X X X X X X X X X W W W W W W W W W W W W W W W W W W W W W W W W W W W W W W W G G G G G G G G G G G G G G G G G G S S S S S S S S S S S S T T T T T T E E E E E E D D D E E E E E E E E E MWTEX-13 GP-3 GP-4 GP-5 GP-6 GP-7 GP-8 MW-13 MW-14 MW-10 SB-1 GPTEX-2 GPTEX-3 GPTEX-4 GPTEX-5 MWTEX-1 MWTEX-5 MWTEX-6 GPTEX-1 4' S I D E W A L K (A 1 2 8 . 0 ' R . O . W . ) 90 0 W E S T S T R E E T U D O T P R O J E C T # R - 1 5 - 7 ( 1 5 4 ) 3 1 1 I N T E R S T A T E 1 5 LAWN LAWN LAWN FREEWAY SOUND WALL 6" CURB WALL (TYP.) POOR CONDITION LANDSCAPING SIGN BASE BENCHMARK TOP NW BOLT 12" WATERWAY BOLLARD MARKED UTILITY TYPE UNKNOWN 6" CURB WALL (TYP.) ASPHALT AP P R O X I M A T E AP P R O X I M A T E AP P R O X I M A T E AP P R O X I M A T E AP P R O X I M A T E APPROXIMATE HA-1 HA-2 HA-3 HA-5 HA-6 HA-7 HA-8 HA-9 HA-10 HA-11 HA-12 HA-13 HA-14 HA-15 HA-16 HA-17 HA-18 HA-19 HA-20 HA-21 HA-22 HA-23 HA-24 HA-25 HA-26 HA-27 HA-28 HA-29 HA-30 SB-2 FORMER STATION BUILDING FORMER TANK BASIN IDW STAGING AREA MWTEX-7 MWTEX-2 MWTEX-3 MWTEX-4 MWTEX-8 MWTEX-9 MWTEX-10 MWTEX-11 MWTEX-12 MWTEX-14 T-C-N-6 T-W-N-6 T-E-S-7 T-W-S-5 T-W-N-6 T-C-N-6 T-E-S-7 HA-22 HA-15 T-W-S-5 GPTEX-2/SB-1 MWTEX-4 GPTEX-4 HA-18 FORMER TEXACO STATION NO. 30-1661 974 NORTH 900 WEST, SALT LAKE CITY, UTAH POST-CORRECTIVE ACTION SOIL ASSESSMENT FIGURE 3 IM A G E S : A r c a d i s L o g o . p n g XR E F S : G E N - X - D - T I T L E G E N - X - B A S E M A P PR O J E C T N A M E : -- - - C: \ U s e r s \ B S S m a l l \ D C \ A C C D o c s \ A r c a d i s A C C U S \ A U S - 9 9 9 9 9 9 9 9 - C H E V _ 3 0 1 6 6 1 _ S A L T L A K E C I T Y _ U T \ P r o j e c t F i l e s \ 1 0 _ W I P \ 1 0 T _ A R C _ E N V \ 2 0 2 4 \ 0 1 - D W G \ G W M - F 0 3 - S O I L A N A L Y T I C A L M A P . d w g L A Y O U T : 3 S A V E D : 11 / 1 1 / 2 0 2 4 3 : 4 6 P M A C A D V E R : 24 . 2 S ( L M S T E C H ) P A G E S E T U P : -- - - P L O T S T Y L E T A B L E : -- - - P L O T T E D : 11 / 1 1 / 2 0 2 4 3 : 5 8 P M B Y : SM A L L , B R I A N NOTES: 1.BASE MAP PERFORMED ON SEPTEMBER 13, 2013 BY BINGHAM ENGINEERING, INC. 2.MTBE = METHYL TERT-BUTYL ETHER 3.TPH-DRO = TOTAL PETROLEUM HYDROCARBONS AS DIESEL 4.TPH-GRO = TOTAL PETROLEUM HYDROCARBONS AS GASOLINE 5. = COMPOUND DETECTED 6. = CONCENTRATION ABOVE THE DIVISION OF ENVIRONMENTAL RESPONSE AND REMEDIATION INITIAL SCREENING LEVELS FOR GROUNDWATER 7.J = ANALYTE DETECTED AT A LEVEL LESS THAN THE REPORTING LIMIT. CONCENTRATIONS WITHIN THIS RANGE ARE ESTIMATED 8.U = CONSTITUENT IS BELOW LABORATORY DETECTION LIMIT 9.< = NON-DETECTS ARE REPORTED TO METHOD DETECTION LIMIT (MDL) 10.[ ] = DUPLICATE ANALYSIS RESULTS 11.ALL SAMPLE RESULTS REPORTED IN MILLIGRAMS PER KILOGRAM (mg/kg). 12.B = THE SAME ANALYTE IS FOUND IN THE ASSOCIATED BLANK 13.HORIZONTAL DATUM IS NORTH AMERICAN DATUM OF 1983 (NAD83). VERTICAL DATUM IS NATIONAL GEODETIC VERTICAL DATUM OF 1988 (NGVD88). LEGEND: PROPERTY LINE (APPROXIMATE) EXISTING FENCE TREE GAS LINE WATER LINE TELEPHONE LINE UNDERGROUND ELECTRIC LINE SANITARY SEWER STORM SEWER LIMITS OF TRENCH EXCAVATION (ARCADIS 2022) UTILITY POLE FLAG POLE MONITORING WELL LOCATION SOIL BORING LOCATION (UNDERWOOD ENVIRONMENTAL 8/2000) SOIL BORING LOCATION (SECTION 6/2001) SOIL BORING LOCATION (ARCADIS 2011) SOIL BORING LOCATION (ARCADIS 2013) SOIL BORING LOCATION (ARCADIS 2021) SOIL BORING LOCATION (ARCADIS 2024) HA-15 Date 08/12/2024 Depth 4-5 Benzene 0.0333 U Toluene 0.167 U Ethyl-benzene 0.101 Total Xylenes 0.0781 J Naph-thalene 0.417 U MTBE 0.0333 U TPH-GRO 1,900 TPH-DRO 134 SOIL ANALYTICAL MAP 0 GRAPHIC SCALE 30'15' BOLDED VALUES GREY SHADED CELLS MWTEX-4 Date 08/12/2024 Depth 4-5 9-10 Benzene 0.244 0.340 Toluene 0.0272 0.0192 Ethyl-benzene 0.107 0.992 Total Xylenes 0.183 0.184 Naph-thalene 0.149 2.97 MTBE 0.00138 U 0.00166 U TPH-GRO 446 TPH-DRO 478 50.6 461 T-W-N-6 Date 08/13/2024 Depth 6.0 Benzene 0.327 Toluene 0.353 U Ethyl-benzene 0.134 J Total Xylenes 0.113 J Naph-thalene 0.883 U MTBE 0.0706 U TPH-GRO 1,960 TPH-DRO 31.1 T-W-S-5 Date 08/13/2024 Depth 5.0 Benzene 0.0312 U Toluene 0.156 U Ethyl-benzene 0.0348 J Total Xylenes 0.0726 J Naph-thalene 0.390 U MTBE 0.0312 U TPH-GRO 1,840 TPH-DRO 298 T-C-N-6 Date 08/13/2024 Depth 6.0 Benzene 0.112 [0.146] Toluene 0.0518 J [0.0807 J] Ethyl-benzene 0.0915 [0.228] Total Xylenes 0.279 [0.467] Naph-thalene 0.428 U [0.528 U] MTBE 0.0342 U [0.0423 U] TPH-GRO 1,760 [2,870] TPH-DRO 169 J [57.2 J] T-E-S-7 Date 08/13/2024 Depth 7.0 Benzene 0.334 Toluene 0.00958 Ethyl-benzene 0.0711 Total Xylenes 0.0429 Naph-thalene 0.0175 U MTBE 0.00140 U TPH-GRO 423 TPH-DRO 69.8 GPTEX-2 Date 08/12/2024 Depth 4-5 Benzene 0.0282 U Toluene 0.141 U Ethyl-benzene 0.0705 U Total Xylenes 0.183 U Naph-thalene 0.352 U MTBE 0.0282 U TPH-GRO 1,360 TPH-DRO 148 GPTEX-4 Date 08/13/2024 Depth 3-4 Benzene 0.00342 Toluene 0.00518 J Ethyl-benzene 0.00709 Total Xylenes 0.030 Naph-thalene 0.0279 J MTBE 0.00232 U TPH-GRO 59.9 TPH-DRO 42.4 HA-18 Date 08/12/2024 Depth 4-5 5-6 6-7 Benzene 0.0740 J 0.0967 U 0.0411 U Toluene 0.277 U 0.484 U 0.206 U Ethyl-benzene 0.585 J 0.242 U 0.103 U Total Xylenes 0.298 J 0.143 J 0.0615 J Naph-thalene 3.58 J 1.21 U 0.514 U MTBE 0.0554 U 0.0967 U 0.0411 U TPH-GRO 10,900 3,240 2,280 TPH-DRO 7,920 J 2,480 387 HA-22 Date 08/12/2024 Depth 4-5 5-6 6-7 Benzene 0.389 0.0401 0.0124 Toluene 0.372 U 0.00296 J 0.00900 U Ethyl-benzene 0.352 0.0101 0.0107 Total Xylenes 0.773 0.0118 0.0107 J Naph-thalene 0.443 J 0.0133 J 0.0108 J MTBE 0.0745 U 0.00169 U 0.00180 U TPH-GRO 3,410 76.7 49.2 TPH-DRO 151 4.54 J 7.94 Legend Date 8/13/2024 Depth (Feet below ground surface) Compound ISLs Tier 1 SLs Benzene 0.2 0.9 Toluene 9 25 Ethylbenzene 5 23 Total Xylenes 142 142 Naphthalene 51 51 MTBE 0.3 0.3 TPH-GRO 150 1500 TPH-DRO 500 5000 Attachment 1 Soil Boring Logs Backfilled with Native Materials (0.0-0.167') ASPHALT. (0.167-2.0') SILTY SAND, fine to very coarse grained; some silt, non-plastic; some gravel, subangular to subrounded; poorly sorted; moist; (5YR 3/4). At 1.0 ft, more silt, organics, color changes to (5YR 3/2). (2.0-3.0') SANDY SILT, low plasticity; some sand, very fine to fine; moist; soft; (5YR 2.5/1). (3.0-4.0') CLAYEY SILT, low plasticity to medium plasticity; moist; very soft; (GLEY 1 3/1). (4.0-5.0') SILTY SAND, medium to very coarse grained; some silt, low plasticity; some gravel, subangular to subrounded; little clay; wet; (GLEY 1 5/1). End of boring at 5.0 ft bgs. 1.6 0.3 0.0 0.3 795GPTEX-2-S-4.0-5.0- 240812 @10:00 NoYes NA Hand Auger Drilling Co.: Driller: Drilling Method: Drilling Rig: Remarks: Cascade NA Travis Ratliff Hand Auger 4 - 5 ft Sampling Method: Sampling Interval: Water Level Start (ft. bgs.): Water Level Finish (ft. bgs.): Converted to Well: Surface Elev: North Coor: East Coor: 4 NA NA '/ft. bgs = feet below ground surface; "/in. = inches; ppm = parts per million; NA = not available / applicable.NA 301661 Salt Lake City 30063821 974 North 900 West, Salt Lake City, Utah Project Name: Project Number: Project Location: WellConstructionDetails Sheet: 1 of 1Soil Boring Log Boring No.:GPTEX-2 Depth(feet) 1 2 3 4 5 6 Date Started: Date Completed: Logger: Editor: Helper(s): 08/12/2024 08/12/2024 DescriptionPID(ppm) Emma Rodgers NA NA USCS Class Recovery(in.)Sample ID 30 1 6 6 1 C H E V R O N C : \ U S E R S \ P K V 7 6 3 1 \ O N E D R I V E - A R C A D I S \ D O C U M E N T S \ G I N T \ 3 0 1 6 6 1 C H E V R O N 3 0 - 1 6 6 1 \ T E M P L A T E \ 3 0 1 6 6 1 - P - N E W . G P J A R C A D I S . G D T 2 8 / 9 / 2 4 Backfilled with Native Materials (0.0-0.167') ASPHALT. (0.167-4.0') SILTY SAND, very fine to coarse grained; some silt, non-plastic to low plasticity; little to some gravel, granule to cobble, angular to subrounded; poorly sorted; moist; (2.5YR 2.5/1)+(2.5YR 4/2); organics; black fragments; shelter waste. End of boring at 4.0 ft bgs. 3.0 506 143 22GPTEX-4-S-3.0-4.0- 240813 @09:15 NoYes NA Hand Auger Drilling Co.: Driller: Drilling Method: Drilling Rig: Remarks: Cascade NA Travis Ratliff 3 -4 ft Hand Auger Sampling Method: Sampling Interval: Water Level Start (ft. bgs.): Water Level Finish (ft. bgs.): Converted to Well: Surface Elev: North Coor: East Coor: 4 NA NA '/ft. bgs = feet below ground surface; "/in. = inches; ppm = parts per million; NA = not available / applicable.NA 301661 Salt Lake City 30063821 974 North 900 West, Salt Lake City, Utah Project Name: Project Number: Project Location: WellConstructionDetails Sheet: 1 of 1Soil Boring Log Boring No.:GPTEX-4 Depth(feet) 1 2 3 4 5 Date Started: Date Completed: Logger: Editor: Helper(s): 08/13/2024 08/13/2024 DescriptionPID(ppm) Emma Rodgers NA NA USCS Class Recovery(in.)Sample ID 30 1 6 6 1 C H E V R O N C : \ U S E R S \ P K V 7 6 3 1 \ O N E D R I V E - A R C A D I S \ D O C U M E N T S \ G I N T \ 3 0 1 6 6 1 C H E V R O N 3 0 - 1 6 6 1 \ T E M P L A T E \ 3 0 1 6 6 1 - P - N E W . G P J A R C A D I S . G D T 2 8 / 9 / 2 4 Backfilled with Native Materials (0.0-0.167') ASPHALT. (0.167-2.5') SILTY SAND, fine to very coarse grained; some silt, non-plastic; some gravel, subangular to subrounded; poorly sorted; moist; (5YR 4/1) At 1.0 ft, more silt, organics, color changes to (5YR 3/2). (2.5-3.0') SILTY CLAY, medium plasticity; moist; soft; (GLEY 1 3/1). (3.0-3.5') CLAYEY SILT, low plasticity to medium plasticity; moist; very soft; (GLEY 1 5/1). (3.5-5.0') SILTY SAND, medium to very coarse grained; some silt, low plasticity to medium plasticity; some gravel, subangular to angular; little clay; wet; (GLEY 1 5/1). End of boring at 5.0 ft bgs. 241 301 311 478 360HA-15-S-4.0-5.0- 240812 @11:00 NoYes NA Hand Auger Drilling Co.: Driller: Drilling Method: Drilling Rig: Remarks: Cascade NA Travis Ratliff 4 - 5 ft Hand Auger Sampling Method: Sampling Interval: Water Level Start (ft. bgs.): Water Level Finish (ft. bgs.): Converted to Well: Surface Elev: North Coor: East Coor: 4.5 NA NA '/ft. bgs = feet below ground surface; "/in. = inches; ppm = parts per million; NA = not available / applicable.NA 301661 Salt Lake City 30063821 974 North 900 West, Salt Lake City, Utah Project Name: Project Number: Project Location: WellConstructionDetails Sheet: 1 of 1Soil Boring Log Boring No.:HA-15 Depth(feet) 1 2 3 4 5 6 Date Started: Date Completed: Logger: Editor: Helper(s): 08/12/2024 08/12/2024 DescriptionPID(ppm) Emma Rodgers NA NA USCS Class Recovery(in.)Sample ID 30 1 6 6 1 C H E V R O N C : \ U S E R S \ P K V 7 6 3 1 \ O N E D R I V E - A R C A D I S \ D O C U M E N T S \ G I N T \ 3 0 1 6 6 1 C H E V R O N 3 0 - 1 6 6 1 \ T E M P L A T E \ 3 0 1 6 6 1 - P - N E W . G P J A R C A D I S . G D T 2 8 / 9 / 2 4 Backfilled with Native Materials (0.0-0.167') ASPHALT. (0.167-2.5') SILTY SAND, fine sand; some silt, non-plastic; some gravel, subangular to subrounded; poorly sorted; moist; (5YR 3/2). At 1.0 ft, more silt, trace gravel, subrounded, color changes to (2.5Y 3/1)+(2.5Y 2.5/1). At 2.0 ft, more cobbles. (2.5-5.0') CLAYEY SILT; some gravel, subangular to subrounded; some sand, fine to coarse grained; moist; (GLEY 1 4/10Y)+(2.5Y 3/1). (5.0-7.0') CLAYEY SILT; trace sand; wet; (5YR 2.5/1). End of boring at 7.0 ft bgs. 1.7 143 97 657 488 457 142 HA-18-S-4.0-5.0- 240812 @14:35 HA-18-S-5.0-6.0- 240812 @14:40 HA-18-S-6.0-7.0- 240812 @14:45 NoYes NA Hand Auger Drilling Co.: Driller: Drilling Method: Drilling Rig: Remarks: Cascade NA Travis Ratliff 4 - 5 ft, 5 -6 ft, and 6 - 7 ft Hand Auger Sampling Method: Sampling Interval: Water Level Start (ft. bgs.): Water Level Finish (ft. bgs.): Converted to Well: Surface Elev: North Coor: East Coor: 5 NA NA '/ft. bgs = feet below ground surface; "/in. = inches; ppm = parts per million; NA = not available / applicable.NA 301661 Salt Lake City 30063821 974 North 900 West, Salt Lake City, Utah Project Name: Project Number: Project Location: WellConstructionDetails Sheet: 1 of 1Soil Boring Log Boring No.:HA-18 Depth(feet) 1 2 3 4 5 6 7 8 Date Started: Date Completed: Logger: Editor: Helper(s): 08/12/2024 08/12/2024 DescriptionPID(ppm) Emma Rodgers NA NA USCS Class Recovery(in.)Sample ID 30 1 6 6 1 C H E V R O N C : \ U S E R S \ P K V 7 6 3 1 \ O N E D R I V E - A R C A D I S \ D O C U M E N T S \ G I N T \ 3 0 1 6 6 1 C H E V R O N 3 0 - 1 6 6 1 \ T E M P L A T E \ 3 0 1 6 6 1 - P - N E W . G P J A R C A D I S . G D T 2 8 / 9 / 2 4 Backfilled with Native Materials (0.0-0.167') ASPHALT. (0.167-2.5') SILTY SAND; some silt, non-plastic; some gravel, subangular to subrounded; poorly sorted; moist; (5YR 3/1). At 1.0 ft, more silt, trace gravel, subrounded, color changes to (2.5Y 3/1)+(2.5Y 2.5/1). (2.5-3.5') CLAYEY SILT, low plasticity to medium plasticity; little sand, very fine to fine grained; wet; soft; (5YR 3/1). (3.5-4.5') CLAY, medium plasticity to high plasticity; trace silt; moist; medium stiff; (GLEY 3/10Y)+(2.5 1N); bonneville blue and black organics. (4.5-7.0') CLAYEY SILT, low plasticity to medium plasticity; some sand, very fine to very coarse grained; some gravel, medium pebble, subangular to subrounded; poorly sorted; wet; (2.5YR 5/1). End of boring at 7.0 ft bgs. 7.8 267 315 450 446 275 44 HA-22-S-4.0-5.0- 240812 @11:40 HA-22-S-5.0-6.0- 240812 @11:50 HA-22-S-6.0-7.0- 240812 @11:45 NoYes NA Hand Auger Drilling Co.: Driller: Drilling Method: Drilling Rig: Remarks: Cascade NA Travis Ratliff 4 - 5 ft, 5 - 6 ft, 6 - 7 ft Hand Auger Sampling Method: Sampling Interval: Water Level Start (ft. bgs.): Water Level Finish (ft. bgs.): Converted to Well: Surface Elev: North Coor: East Coor: 4.5 NA NA '/ft. bgs = feet below ground surface; "/in. = inches; ppm = parts per million; NA = not available / applicable.NA 301661 Salt Lake City 30063821 974 North 900 West, Salt Lake City, Utah Project Name: Project Number: Project Location: WellConstructionDetails Sheet: 1 of 1Soil Boring Log Boring No.:HA-22 Depth(feet) 1 2 3 4 5 6 7 8 Date Started: Date Completed: Logger: Editor: Helper(s): 08/12/2024 08/12/2024 DescriptionPID(ppm) Emma Rodgers NA NA USCS Class Recovery(in.)Sample ID 30 1 6 6 1 C H E V R O N C : \ U S E R S \ P K V 7 6 3 1 \ O N E D R I V E - A R C A D I S \ D O C U M E N T S \ G I N T \ 3 0 1 6 6 1 C H E V R O N 3 0 - 1 6 6 1 \ T E M P L A T E \ 3 0 1 6 6 1 - P - N E W . G P J A R C A D I S . G D T 2 8 / 9 / 2 4 Backfilled with Native Materials (0.0-0.167') ASPHALT. (0.167-3.0') SILTY SAND, fine to very coarse grained; some silt, non-plastic; some gravel, pebble, subangular to subrounded; poorly sorted; moist; (5YR 3/2). At 1.0 ft, more silt, low plasticity, some gravel, subrounded, cobbles, color changes to (2.5YR 3/1). (3.0-5.0') CLAYEY SILT, low plasticity; some sand, very fine to coarse grained; little gravel, small pebbles, subangular to subrounded; moist; (GLEY 4/10Y)+(2.5Y 3/1). (5.0-10.0') SAND, fine to coarse grained; trace silt, non-plastic; subangular to subrounded; poorly sorted; moist; (GLEY 1 3/10Y). End of boring at 10.0 ft bgs. 0.4 8.0 94 5.0 20 540 421 491 461 63.4 MWTEX-4-S-4.0-5.0- 240812 @13:40 MWTEX-4-S-9.0-10.0- 240812 @13:55 NoYes NA Hand Auger Drilling Co.: Driller: Drilling Method: Drilling Rig: Remarks: Cascade NA Travis Ratliff 4 - 5 ft, 9 - 10 ft Hand Auger Sampling Method: Sampling Interval: Water Level Start (ft. bgs.): Water Level Finish (ft. bgs.): Converted to Well: Surface Elev: North Coor: East Coor: 4.02 NA NA '/ft. bgs = feet below ground surface; "/in. = inches; ppm = parts per million; NA = not available / applicable.NA 301661 Salt Lake City 30063821 974 North 900 West, Salt Lake City, Utah Project Name: Project Number: Project Location: WellConstructionDetails Sheet: 1 of 1Soil Boring Log Boring No.:MWTEX-4 Depth(feet) 1 2 3 4 5 6 7 8 9 10 11 Date Started: Date Completed: Logger: Editor: Helper(s): 08/12/2024 08/12/2024 DescriptionPID(ppm) Emma Rodgers NA NA USCS Class Recovery(in.)Sample ID 30 1 6 6 1 C H E V R O N C : \ U S E R S \ P K V 7 6 3 1 \ O N E D R I V E - A R C A D I S \ D O C U M E N T S \ G I N T \ 3 0 1 6 6 1 C H E V R O N 3 0 - 1 6 6 1 \ T E M P L A T E \ 3 0 1 6 6 1 - P - N E W . G P J A R C A D I S . G D T 2 8 / 9 / 2 4 Backfilled with Native Materials (0.0-0.25') ASPHALT. (0.25-2.5') SILTY SAND, fine to very coarse grained; some silt, non-plastic; some gravel, subangular to subrounded; poorly sorted; moist; (10YR 6/4). At 1.0 ft, more silt, color changes to (2.5Y 3/1). (2.5-3.0') SILT, medium plasticity; some clay; trace sand; moist; (GLEY 2.5/N); organics. (3.0-3.5') SAND; trace silt, non-plastic; (GLEY 3/10Y). (3.5-5.5') CLAY, medium plasticity to high plasticity; little sand; little silt; (10YR 2/1). (5.5-6.0') SILT, low plasticity to medium plasticity; some sand; little clay; moist; (10YR 3/1). End of boring at 6.0 ft bgs. 5.0 373 546 602 516 267T-C-N-6-S-5.0-6.0- 240813 @10:50 NoYes NA Hand Auger Drilling Co.: Driller: Drilling Method: Drilling Rig: Remarks: Cascade NA Travis Ratliff 5 - 6 ft Hand Auger Sampling Method: Sampling Interval: Water Level Start (ft. bgs.): Water Level Finish (ft. bgs.): Converted to Well: Surface Elev: North Coor: East Coor: 5 NA NA '/ft. bgs = feet below ground surface; "/in. = inches; ppm = parts per million; NA = not available / applicable.NA 301661 Salt Lake City 30063821 974 North 900 West, Salt Lake City, Utah Project Name: Project Number: Project Location: WellConstructionDetails Sheet: 1 of 1Soil Boring Log Boring No.:T-C-N-6 Depth(feet) 1 2 3 4 5 6 7 Date Started: Date Completed: Logger: Editor: Helper(s): 08/13/2024 08/13/2024 DescriptionPID(ppm) Emma Rodgers NA NA USCS Class Recovery(in.)Sample ID 30 1 6 6 1 C H E V R O N C : \ U S E R S \ P K V 7 6 3 1 \ O N E D R I V E - A R C A D I S \ D O C U M E N T S \ G I N T \ 3 0 1 6 6 1 C H E V R O N 3 0 - 1 6 6 1 \ T E M P L A T E \ 3 0 1 6 6 1 - P - N E W . G P J A R C A D I S . G D T 2 8 / 9 / 2 4 Backfilled with Native Materials (0.0-0.25') ASPHALT. (0.25-6.0') SILTY SAND, fine to very coarse grained; some silt, non-plastic; some gravel, subangular to subrounded; poorly sorted; moist; (5YR 4/2). At 2.0 ft, more silt, low plasticity, little gravel, color changes to (2.5Y 3/1), reworked native and fill. (6.0-7.0') CLAYEY SILT, low plasticity to medium plasticity; some sand; some gravel, angular to subrounded; poorly sorted; wet; (GLEY 1 2.5/N); clumes of native clay mixed with surrounded cobbles and pebbles. End of boring at 7.0 ft bgs. 3.5 5.0 42 165 204 3.0 22T-E-S-7-S-6.0-7.0- 240813 @10:10 NoYes NA Hand Auger Drilling Co.: Driller: Drilling Method: Drilling Rig: Remarks: Cascade NA Travis Ratliff 6 - 7 ft Hand Auger Sampling Method: Sampling Interval: Water Level Start (ft. bgs.): Water Level Finish (ft. bgs.): Converted to Well: Surface Elev: North Coor: East Coor: 5.5 NA NA '/ft. bgs = feet below ground surface; "/in. = inches; ppm = parts per million; NA = not available / applicable.NA 301661 Salt Lake City 30063821 974 North 900 West, Salt Lake City, Utah Project Name: Project Number: Project Location: WellConstructionDetails Sheet: 1 of 1Soil Boring Log Boring No.:T-E-S-7 Depth(feet) 1 2 3 4 5 6 7 8 Date Started: Date Completed: Logger: Editor: Helper(s): 08/13/2024 08/13/2024 DescriptionPID(ppm) Emma Rodgers NA NA USCS Class Recovery(in.)Sample ID 30 1 6 6 1 C H E V R O N C : \ U S E R S \ P K V 7 6 3 1 \ O N E D R I V E - A R C A D I S \ D O C U M E N T S \ G I N T \ 3 0 1 6 6 1 C H E V R O N 3 0 - 1 6 6 1 \ T E M P L A T E \ 3 0 1 6 6 1 - P - N E W . G P J A R C A D I S . G D T 2 8 / 9 / 2 4 Backfilled with Native Materials (0.0-0.33') ASPHALT. (0.33-1.0') SILTY SAND, fine to very coarse grained; some silt, non-plastic; some gravel, subangular to subrounded; poorly sorted; moist; (10YR 6/4). (1.0-2.5') SILTY SAND; some silt, non-plastic; trace gravel, subangular to subrounded; moist; (10YR 3/1). (2.5-3.0') SILTY SAND; trace silt, non-plastic; moist; (10YR 4/1). (3.0-5.5') CLAYEY SILT, low plasticity; moist; (10YR 4/1). At 4.0 ft, grades to some sand, color changes to (10YR 2/1). At 5.0 ft, grades to silty clay, medium plasticity, organics. (5.5-6.0') SAND; trace silt, non-plastic; wet; (10YR 4/1); shells. End of boring at 6.0 ft bgs. 11.2 428 441 436 347 0.2T-W-N-6-S-5.0-6.0- 240813 @11:35 NoYes NA Hand Auger Drilling Co.: Driller: Drilling Method: Drilling Rig: Remarks: Cascade NA Travis Ratliff 5 - 6 ft Hand Auger Sampling Method: Sampling Interval: Water Level Start (ft. bgs.): Water Level Finish (ft. bgs.): Converted to Well: Surface Elev: North Coor: East Coor: 5.5 NA NA '/ft. bgs = feet below ground surface; "/in. = inches; ppm = parts per million; NA = not available / applicable.NA 301661 Salt Lake City 30063821 974 North 900 West, Salt Lake City, Utah Project Name: Project Number: Project Location: WellConstructionDetails Sheet: 1 of 1Soil Boring Log Boring No.:T-W-N-6 Depth(feet) 1 2 3 4 5 6 7 Date Started: Date Completed: Logger: Editor: Helper(s): 08/13/2024 08/13/2024 DescriptionPID(ppm) Emma Rodgers NA NA USCS Class Recovery(in.)Sample ID 30 1 6 6 1 C H E V R O N C : \ U S E R S \ P K V 7 6 3 1 \ O N E D R I V E - A R C A D I S \ D O C U M E N T S \ G I N T \ 3 0 1 6 6 1 C H E V R O N 3 0 - 1 6 6 1 \ T E M P L A T E \ 3 0 1 6 6 1 - P - N E W . G P J A R C A D I S . G D T 2 8 / 9 / 2 4 Backfilled with Native Materials (0.0-0.33') ASPHALT. (0.33-1.5') SILTY SAND, fine to very coarse grained; some silt, non-plastic; some gravel, subangular to subrounded; poorly sorted; moist; (10YR 6/4). (1.5-3.0') SAND; some silt, low plasticity to medium plasticity; trace gravel, subangular to subrounded; moist; (10YR 3/1). (3.0-3.5') SAND; some silt, non-plastic to low plasticity; moist; (5Y 5/1). (3.5-5.0') SAND and SILT, very fine grained; and silt, low plasticity to medium plasticity; little clay; little gravel, subangular to subrounded; poorly sorted; wet; (GLEY 1 5/N). End of boring at 5.0 ft bgs. 0.7 23 31 423 473T-W-S-5-S-4.0-5.0- 240813 @12:05 NoYes NA Hand Auger Drilling Co.: Driller: Drilling Method: Drilling Rig: Remarks: Cascade NA Travis Ratliff 4 - 5 ft Hand Auger Sampling Method: Sampling Interval: Water Level Start (ft. bgs.): Water Level Finish (ft. bgs.): Converted to Well: Surface Elev: North Coor: East Coor: 3.5 NA NA '/ft. bgs = feet below ground surface; "/in. = inches; ppm = parts per million; NA = not available / applicable.NA 301661 Salt Lake City 30063821 974 North 900 West, Salt Lake City, Utah Project Name: Project Number: Project Location: WellConstructionDetails Sheet: 1 of 1Soil Boring Log Boring No.:T-W-S-5 Depth(feet) 1 2 3 4 5 6 Date Started: Date Completed: Logger: Editor: Helper(s): 08/13/2024 08/13/2024 DescriptionPID(ppm) Emma Rodgers NA NA USCS Class Recovery(in.)Sample ID 30 1 6 6 1 C H E V R O N C : \ U S E R S \ P K V 7 6 3 1 \ O N E D R I V E - A R C A D I S \ D O C U M E N T S \ G I N T \ 3 0 1 6 6 1 C H E V R O N 3 0 - 1 6 6 1 \ T E M P L A T E \ 3 0 1 6 6 1 - P - N E W . G P J A R C A D I S . G D T 2 8 / 9 / 2 4 Attachment 2 Laboratory Report ANALYTICAL REPORT August 30, 2024 Arcadis - Chevron - UT Sample Delivery Group:L1767917 Samples Received:08/15/2024 Project Number:30063821 04.81 Description:301661 Site:974 N 900 WEST Report To:Skip Robinson 10 Exchange Place Suite 112 Salt Lake City, UT 84111 Entire Report Reviewed By: August 30, 2024 [Preliminary Report] Brian Ford 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: Arcadis - Chevron - UT 30063821 04.81 L1767917 08/30/24 14:20 1 of 47 August 30, 2024 Brian Ford Project Manager ACCOUNT:PROJECT:SDG:DATE/TIME:PAGE: Arcadis - Chevron - UT 30063821 04.81 L1767917 08/30/24 16:11 1 of 47 TABLE OF CONTENTS Cp: Cover Page 1 Tc: Table of Contents 2 Ss: Sample Summary 3 Cn: Case Narrative 7 Sr: Sample Results 8 T-W-N-6-S-5-6-240813 L1767917-01 8 T-W-S-5-S-4-5-240813 L1767917-02 9 T-C-N-6-S-5-6-240813 L1767917-03 10 T-E-S-7-S-6-7-240813 L1767917-04 11 GPTEX-2-S-4-5-240812 L1767917-05 12 GPTEX-4-S-3-4-240813 L1767917-06 13 MWTEX-4-S-4-5-240812 L1767917-07 14 MWTEX-4-S-9-10-240812 L1767917-08 15 HA-15-S-4-5-240812 L1767917-09 16 HA-18-S-4-5-240812 L1767917-10 17 HA-18-S-5-6-240812 L1767917-11 18 HA-18-S-6-7-240812 L1767917-12 19 HA-22-S-4-5-240812 L1767917-13 20 HA-22-S-5-6-240812 L1767917-14 21 HA-22-S-6-7-240812 L1767917-15 22 BD-S-240813 L1767917-16 23 TRIP BLANK-240812 L1767917-17 24 TRIP BLANK-240813 L1767917-18 25 Qc: Quality Control Summary 26 Total Solids by Method 2540 G-2011 26 Wet Chemistry by Method 9056A 28 Wet Chemistry by Method D2974 29 Metals (ICP) by Method 6010D 31 Volatile Organic Compounds (GC) by Method 8015D/GRO 32 Volatile Organic Compounds (GC/MS) by Method 8260D 37 Semi-Volatile Organic Compounds (GC) by Method 8015D 41 Gl: Glossary of Terms 43 Al: Accreditations & Locations 44 Sc: Sample Chain of Custody 45 1 Cp 2 Tc 3 Ss 4 Cn 5 Sr 6 Qc 7 Gl 8 Al 9 Sc ACCOUNT:PROJECT:SDG:DATE/TIME:PAGE: Arcadis - Chevron - UT 30063821 04.81 L1767917 08/30/24 14:20 2 of 47 ACCOUNT:PROJECT:SDG:DATE/TIME:PAGE: Arcadis - Chevron - UT 30063821 04.81 L1767917 08/30/24 16:11 2 of 47 SAMPLE SUMMARY Collected by Collected date/time Received date/time T-W-N-6-S-5-6-240813 L1767917-01 Solid Emma Rodgers 08/13/24 11:35 08/15/24 09:00 Method Batch Dilution Preparation Analysis Analyst Location date/time date/time Total Solids by Method 2540 G-2011 WG2345371 1 08/19/24 12:13 08/19/24 12:17 CMB Mt. Juliet, TN Wet Chemistry by Method 9056A WG2345850 5 08/22/24 11:52 08/22/24 16:48 JDG Mt. Juliet, TN Wet Chemistry by Method D2974 WG2345190 1 08/17/24 14:38 08/17/24 14:38 MMF Mt. Juliet, TN Metals (ICP) by Method 6010D WG2345457 1 08/21/24 08:43 08/21/24 21:44 MAP Mt. Juliet, TN Volatile Organic Compounds (GC) by Method 8015D/GRO WG2348293 500 08/13/24 11:35 08/22/24 17:33 NCD Mt. Juliet, TN Volatile Organic Compounds (GC/MS) by Method 8260D WG2347727 40 08/13/24 11:35 08/21/24 22:17 JHH Mt. Juliet, TN Semi-Volatile Organic Compounds (GC) by Method 8015D WG2348926 1 08/23/24 09:28 08/25/24 18:37 NH Mt. Juliet, TN Collected by Collected date/time Received date/time T-W-S-5-S-4-5-240813 L1767917-02 Solid Emma Rodgers 08/13/24 12:05 08/15/24 09:00 Method Batch Dilution Preparation Analysis Analyst Location date/time date/time Total Solids by Method 2540 G-2011 WG2345371 1 08/19/24 12:13 08/19/24 12:17 CMB Mt. Juliet, TN Wet Chemistry by Method 9056A WG2345850 5 08/22/24 11:52 08/22/24 17:01 JDG Mt. Juliet, TN Wet Chemistry by Method D2974 WG2345190 1 08/17/24 14:38 08/17/24 14:38 MMF Mt. Juliet, TN Metals (ICP) by Method 6010D WG2345457 1 08/21/24 08:43 08/21/24 21:46 MAP Mt. Juliet, TN Volatile Organic Compounds (GC) by Method 8015D/GRO WG2348293 200 08/13/24 12:05 08/22/24 17:56 NCD Mt. Juliet, TN Volatile Organic Compounds (GC/MS) by Method 8260D WG2347727 20 08/13/24 12:05 08/21/24 22:37 JHH Mt. Juliet, TN Semi-Volatile Organic Compounds (GC) by Method 8015D WG2348926 1 08/23/24 09:28 08/26/24 21:18 KKS Mt. Juliet, TN Semi-Volatile Organic Compounds (GC) by Method 8015D WG2348926 1 08/23/24 09:28 08/27/24 13:29 KKS Mt. Juliet, TN Collected by Collected date/time Received date/time T-C-N-6-S-5-6-240813 L1767917-03 Solid Emma Rodgers 08/13/24 10:50 08/15/24 09:00 Method Batch Dilution Preparation Analysis Analyst Location date/time date/time Total Solids by Method 2540 G-2011 WG2345371 1 08/19/24 12:13 08/19/24 12:17 CMB Mt. Juliet, TN Wet Chemistry by Method 9056A WG2345850 1.01 08/22/24 11:52 08/22/24 17:13 JDG Mt. Juliet, TN Wet Chemistry by Method D2974 WG2345190 1 08/17/24 14:38 08/17/24 14:38 MMF Mt. Juliet, TN Metals (ICP) by Method 6010D WG2345457 1 08/21/24 08:43 08/21/24 21:51 MAP Mt. Juliet, TN Volatile Organic Compounds (GC) by Method 8015D/GRO WG2348293 250 08/13/24 10:50 08/22/24 18:20 NCD Mt. Juliet, TN Volatile Organic Compounds (GC/MS) by Method 8260D WG2347001 20 08/13/24 10:50 08/21/24 12:55 JHH Mt. Juliet, TN Semi-Volatile Organic Compounds (GC) by Method 8015D WG2348926 1 08/23/24 09:28 08/25/24 18:51 NH Mt. Juliet, TN Collected by Collected date/time Received date/time T-E-S-7-S-6-7-240813 L1767917-04 Solid Emma Rodgers 08/13/24 10:10 08/15/24 09:00 Method Batch Dilution Preparation Analysis Analyst Location date/time date/time Total Solids by Method 2540 G-2011 WG2345371 1 08/19/24 12:13 08/19/24 12:17 CMB Mt. Juliet, TN Wet Chemistry by Method 9056A WG2345850 1.02 08/22/24 11:52 08/22/24 17:26 JDG Mt. Juliet, TN Wet Chemistry by Method D2974 WG2345190 1 08/17/24 14:38 08/17/24 14:38 MMF Mt. Juliet, TN Metals (ICP) by Method 6010D WG2345457 1 08/21/24 08:43 08/21/24 21:53 MAP Mt. Juliet, TN Volatile Organic Compounds (GC) by Method 8015D/GRO WG2348842 200 08/13/24 10:10 08/23/24 03:21 JHH Mt. Juliet, TN Volatile Organic Compounds (GC/MS) by Method 8260D WG2347001 1 08/13/24 10:10 08/21/24 07:20 JHH Mt. Juliet, TN Semi-Volatile Organic Compounds (GC) by Method 8015D WG2348926 5 08/23/24 09:28 08/25/24 21:14 NH Mt. Juliet, TN Collected by Collected date/time Received date/time GPTEX-2-S-4-5-240812 L1767917-05 Solid Emma Rodgers 08/12/24 10:00 08/15/24 09:00 Method Batch Dilution Preparation Analysis Analyst Location date/time date/time Total Solids by Method 2540 G-2011 WG2345371 1 08/19/24 12:13 08/19/24 12:17 CMB Mt. Juliet, TN Wet Chemistry by Method 9056A WG2345850 1 08/22/24 11:52 08/22/24 17:39 JDG Mt. Juliet, TN Wet Chemistry by Method D2974 WG2345190 1 08/17/24 14:38 08/17/24 14:38 MMF 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: Arcadis - Chevron - UT 30063821 04.81 L1767917 08/30/24 14:20 3 of 47 ACCOUNT:PROJECT:SDG:DATE/TIME:PAGE: Arcadis - Chevron - UT 30063821 04.81 L1767917 08/30/24 16:11 3 of 47 SAMPLE SUMMARY Collected by Collected date/time Received date/time GPTEX-2-S-4-5-240812 L1767917-05 Solid Emma Rodgers 08/12/24 10:00 08/15/24 09:00 Method Batch Dilution Preparation Analysis Analyst Location date/time date/time Metals (ICP) by Method 6010D WG2345457 1 08/21/24 08:43 08/21/24 21:55 MAP Mt. Juliet, TN Volatile Organic Compounds (GC) by Method 8015D/GRO WG2347851 200 08/12/24 10:00 08/22/24 05:03 DWR Mt. Juliet, TN Volatile Organic Compounds (GC/MS) by Method 8260D WG2347001 20 08/12/24 10:00 08/21/24 13:15 JHH Mt. Juliet, TN Semi-Volatile Organic Compounds (GC) by Method 8015D WG2348926 1 08/23/24 09:28 08/25/24 20:09 NH Mt. Juliet, TN Collected by Collected date/time Received date/time GPTEX-4-S-3-4-240813 L1767917-06 Solid Emma Rodgers 08/13/24 09:15 08/15/24 09:00 Method Batch Dilution Preparation Analysis Analyst Location date/time date/time Total Solids by Method 2540 G-2011 WG2345371 1 08/19/24 12:13 08/19/24 12:17 CMB Mt. Juliet, TN Wet Chemistry by Method 9056A WG2345850 1.02 08/22/24 11:52 08/22/24 17:52 JDG Mt. Juliet, TN Wet Chemistry by Method D2974 WG2345190 1 08/17/24 14:38 08/17/24 14:38 MMF Mt. Juliet, TN Metals (ICP) by Method 6010D WG2345457 1 08/21/24 08:43 08/21/24 21:34 MAP Mt. Juliet, TN Volatile Organic Compounds (GC) by Method 8015D/GRO WG2348293 28.5 08/13/24 09:15 08/22/24 16:23 NCD Mt. Juliet, TN Volatile Organic Compounds (GC/MS) by Method 8260D WG2347001 1.14 08/13/24 09:15 08/21/24 07:39 JHH Mt. Juliet, TN Semi-Volatile Organic Compounds (GC) by Method 8015D WG2348926 1 08/23/24 09:28 08/25/24 20:48 NH Mt. Juliet, TN Collected by Collected date/time Received date/time MWTEX-4-S-4-5-240812 L1767917-07 Solid Emma Rodgers 08/12/24 13:40 08/15/24 09:00 Method Batch Dilution Preparation Analysis Analyst Location date/time date/time Total Solids by Method 2540 G-2011 WG2345371 1 08/19/24 12:13 08/19/24 12:17 CMB Mt. Juliet, TN Wet Chemistry by Method 9056A WG2345850 1 08/22/24 11:52 08/22/24 18:44 JDG Mt. Juliet, TN Wet Chemistry by Method D2974 WG2345190 1 08/17/24 14:38 08/17/24 14:38 MMF Mt. Juliet, TN Metals (ICP) by Method 6010D WG2345457 1 08/21/24 08:43 08/21/24 21:57 MAP Mt. Juliet, TN Volatile Organic Compounds (GC) by Method 8015D/GRO WG2348232 100 08/12/24 13:40 08/22/24 20:59 ACG Mt. Juliet, TN Volatile Organic Compounds (GC/MS) by Method 8260D WG2347001 1 08/12/24 13:40 08/21/24 07:59 JHH Mt. Juliet, TN Semi-Volatile Organic Compounds (GC) by Method 8015D WG2348926 50 08/23/24 09:28 08/27/24 13:42 KKS Mt. Juliet, TN Collected by Collected date/time Received date/time MWTEX-4-S-9-10-240812 L1767917-08 Solid Emma Rodgers 08/12/24 13:55 08/15/24 09:00 Method Batch Dilution Preparation Analysis Analyst Location date/time date/time Total Solids by Method 2540 G-2011 WG2345372 1 08/19/24 15:32 08/19/24 15:42 CMB Mt. Juliet, TN Wet Chemistry by Method 9056A WG2345850 1.02 08/22/24 11:52 08/22/24 19:23 JDG Mt. Juliet, TN Wet Chemistry by Method D2974 WG2345190 1 08/17/24 14:38 08/17/24 14:38 MMF Mt. Juliet, TN Metals (ICP) by Method 6010D WG2345457 1 08/21/24 08:43 08/21/24 21:58 MAP Mt. Juliet, TN Volatile Organic Compounds (GC) by Method 8015D/GRO WG2348232 100 08/12/24 13:55 08/22/24 21:22 ACG Mt. Juliet, TN Volatile Organic Compounds (GC/MS) by Method 8260D WG2347001 1 08/12/24 13:55 08/21/24 08:19 JHH Mt. Juliet, TN Semi-Volatile Organic Compounds (GC) by Method 8015D WG2348926 1 08/23/24 09:28 08/25/24 20:35 NH Mt. Juliet, TN Collected by Collected date/time Received date/time HA-15-S-4-5-240812 L1767917-09 Solid Emma Rodgers 08/12/24 11:00 08/15/24 09:00 Method Batch Dilution Preparation Analysis Analyst Location date/time date/time Total Solids by Method 2540 G-2011 WG2345372 1 08/19/24 15:32 08/19/24 15:42 CMB Mt. Juliet, TN Wet Chemistry by Method 9056A WG2345850 1 08/22/24 11:52 08/22/24 19:36 JDG Mt. Juliet, TN Wet Chemistry by Method D2974 WG2345103 1 08/17/24 14:58 08/17/24 14:58 MMF Mt. Juliet, TN Metals (ICP) by Method 6010D WG2345457 1 08/21/24 08:43 08/21/24 22:00 MAP Mt. Juliet, TN Volatile Organic Compounds (GC) by Method 8015D/GRO WG2347851 200 08/12/24 11:00 08/22/24 05:23 DWR Mt. Juliet, TN Volatile Organic Compounds (GC/MS) by Method 8260D WG2347001 20 08/12/24 11:00 08/21/24 13:34 JHH Mt. Juliet, TN Semi-Volatile Organic Compounds (GC) by Method 8015D WG2348926 1 08/23/24 09:28 08/25/24 20:22 NH 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: Arcadis - Chevron - UT 30063821 04.81 L1767917 08/30/24 14:20 4 of 47 ACCOUNT:PROJECT:SDG:DATE/TIME:PAGE: Arcadis - Chevron - UT 30063821 04.81 L1767917 08/30/24 16:11 4 of 47 SAMPLE SUMMARY Collected by Collected date/time Received date/time HA-18-S-4-5-240812 L1767917-10 Solid Emma Rodgers 08/12/24 14:35 08/15/24 09:00 Method Batch Dilution Preparation Analysis Analyst Location date/time date/time Total Solids by Method 2540 G-2011 WG2345372 1 08/19/24 15:32 08/19/24 15:42 CMB Mt. Juliet, TN Wet Chemistry by Method 9056A WG2345850 1 08/22/24 11:52 08/22/24 19:48 JDG Mt. Juliet, TN Wet Chemistry by Method D2974 WG2345103 1 08/17/24 14:58 08/17/24 14:58 MMF Mt. Juliet, TN Metals (ICP) by Method 6010D WG2345457 1 08/21/24 08:43 08/21/24 22:02 MAP Mt. Juliet, TN Volatile Organic Compounds (GC) by Method 8015D/GRO WG2348232 2500 08/12/24 14:35 08/22/24 21:45 ACG Mt. Juliet, TN Volatile Organic Compounds (GC/MS) by Method 8260D WG2346948 40 08/12/24 14:35 08/21/24 03:23 JHH Mt. Juliet, TN Semi-Volatile Organic Compounds (GC) by Method 8015D WG2348926 200 08/23/24 09:28 08/25/24 22:18 NH Mt. Juliet, TN Collected by Collected date/time Received date/time HA-18-S-5-6-240812 L1767917-11 Solid Emma Rodgers 08/12/24 14:40 08/15/24 09:00 Method Batch Dilution Preparation Analysis Analyst Location date/time date/time Total Solids by Method 2540 G-2011 WG2345372 1 08/19/24 15:32 08/19/24 15:42 CMB Mt. Juliet, TN Wet Chemistry by Method 9056A WG2345850 1 08/22/24 11:52 08/22/24 20:01 JDG Mt. Juliet, TN Wet Chemistry by Method D2974 WG2345103 1 08/17/24 14:58 08/17/24 14:58 MMF Mt. Juliet, TN Metals (ICP) by Method 6010D WG2345457 1 08/21/24 08:43 08/21/24 22:04 MAP Mt. Juliet, TN Volatile Organic Compounds (GC) by Method 8015D/GRO WG2347851 500 08/12/24 14:40 08/22/24 06:01 DWR Mt. Juliet, TN Volatile Organic Compounds (GC/MS) by Method 8260D WG2346948 40 08/12/24 14:40 08/21/24 03:43 JHH Mt. Juliet, TN Semi-Volatile Organic Compounds (GC) by Method 8015D WG2348926 10 08/23/24 09:28 08/25/24 21:39 NH Mt. Juliet, TN Collected by Collected date/time Received date/time HA-18-S-6-7-240812 L1767917-12 Solid Emma Rodgers 08/12/24 14:45 08/15/24 09:00 Method Batch Dilution Preparation Analysis Analyst Location date/time date/time Total Solids by Method 2540 G-2011 WG2345372 1 08/19/24 15:32 08/19/24 15:42 CMB Mt. Juliet, TN Wet Chemistry by Method 9056A WG2345850 1 08/22/24 11:52 08/22/24 20:14 JDG Mt. Juliet, TN Wet Chemistry by Method D2974 WG2345103 1 08/17/24 14:58 08/17/24 14:58 MMF Mt. Juliet, TN Metals (ICP) by Method 6010D WG2345457 1 08/21/24 08:43 08/21/24 22:05 MAP Mt. Juliet, TN Volatile Organic Compounds (GC) by Method 8015D/GRO WG2347851 200 08/12/24 14:45 08/22/24 06:20 DWR Mt. Juliet, TN Volatile Organic Compounds (GC/MS) by Method 8260D WG2346948 20 08/12/24 14:45 08/21/24 04:03 JHH Mt. Juliet, TN Semi-Volatile Organic Compounds (GC) by Method 8015D WG2348926 10 08/23/24 09:28 08/26/24 22:10 KKS Mt. Juliet, TN Semi-Volatile Organic Compounds (GC) by Method 8015D WG2348926 10 08/23/24 09:28 08/27/24 13:29 KKS Mt. Juliet, TN Collected by Collected date/time Received date/time HA-22-S-4-5-240812 L1767917-13 Solid Emma Rodgers 08/12/24 11:40 08/15/24 09:00 Method Batch Dilution Preparation Analysis Analyst Location date/time date/time Total Solids by Method 2540 G-2011 WG2345372 1 08/19/24 15:32 08/19/24 15:42 CMB Mt. Juliet, TN Wet Chemistry by Method 9056A WG2345850 1 08/22/24 11:52 08/22/24 20:27 JDG Mt. Juliet, TN Wet Chemistry by Method D2974 WG2345103 1 08/17/24 14:58 08/17/24 14:58 MMF Mt. Juliet, TN Metals (ICP) by Method 6010D WG2345457 1 08/21/24 08:43 08/21/24 22:07 MAP Mt. Juliet, TN Volatile Organic Compounds (GC) by Method 8015D/GRO WG2347851 500 08/12/24 11:40 08/22/24 06:40 DWR Mt. Juliet, TN Volatile Organic Compounds (GC/MS) by Method 8260D WG2346948 40 08/12/24 11:40 08/21/24 04:23 JHH Mt. Juliet, TN Semi-Volatile Organic Compounds (GC) by Method 8015D WG2348926 1 08/23/24 09:28 08/25/24 19:55 NH Mt. Juliet, TN Collected by Collected date/time Received date/time HA-22-S-5-6-240812 L1767917-14 Solid Emma Rodgers 08/12/24 11:50 08/15/24 09:00 Method Batch Dilution Preparation Analysis Analyst Location date/time date/time Total Solids by Method 2540 G-2011 WG2345372 1 08/19/24 15:32 08/19/24 15:42 CMB Mt. Juliet, TN Wet Chemistry by Method 9056A WG2345850 1 08/22/24 11:52 08/22/24 20:40 JDG Mt. Juliet, TN Wet Chemistry by Method D2974 WG2345103 1 08/17/24 14:58 08/17/24 14:58 MMF 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: Arcadis - Chevron - UT 30063821 04.81 L1767917 08/30/24 14:20 5 of 47 ACCOUNT:PROJECT:SDG:DATE/TIME:PAGE: Arcadis - Chevron - UT 30063821 04.81 L1767917 08/30/24 16:11 5 of 47 SAMPLE SUMMARY Collected by Collected date/time Received date/time HA-22-S-5-6-240812 L1767917-14 Solid Emma Rodgers 08/12/24 11:50 08/15/24 09:00 Method Batch Dilution Preparation Analysis Analyst Location date/time date/time Metals (ICP) by Method 6010D WG2345457 1 08/21/24 08:43 08/21/24 22:18 MAP Mt. Juliet, TN Volatile Organic Compounds (GC) by Method 8015D/GRO WG2347851 25 08/12/24 11:50 08/22/24 03:07 DWR Mt. Juliet, TN Volatile Organic Compounds (GC/MS) by Method 8260D WG2346948 1 08/12/24 11:50 08/20/24 23:07 JHH Mt. Juliet, TN Semi-Volatile Organic Compounds (GC) by Method 8015D WG2349009 1 08/24/24 08:44 08/24/24 17:54 KDB Mt. Juliet, TN Collected by Collected date/time Received date/time HA-22-S-6-7-240812 L1767917-15 Solid Emma Rodgers 08/12/24 11:45 08/15/24 09:00 Method Batch Dilution Preparation Analysis Analyst Location date/time date/time Total Solids by Method 2540 G-2011 WG2345372 1 08/19/24 15:32 08/19/24 15:42 CMB Mt. Juliet, TN Wet Chemistry by Method 9056A WG2345850 1 08/22/24 11:52 08/22/24 20:53 JDG Mt. Juliet, TN Wet Chemistry by Method D2974 WG2345103 1 08/17/24 14:58 08/17/24 14:58 MMF Mt. Juliet, TN Metals (ICP) by Method 6010D WG2345457 1 08/21/24 08:43 08/21/24 22:20 MAP Mt. Juliet, TN Volatile Organic Compounds (GC) by Method 8015D/GRO WG2348746 25 08/12/24 11:45 08/23/24 05:22 DWR Mt. Juliet, TN Volatile Organic Compounds (GC/MS) by Method 8260D WG2346948 1 08/12/24 11:45 08/20/24 23:27 JHH Mt. Juliet, TN Semi-Volatile Organic Compounds (GC) by Method 8015D WG2349009 1 08/24/24 08:44 08/24/24 18:20 KDB Mt. Juliet, TN Collected by Collected date/time Received date/time BD-S-240813 L1767917-16 Solid Emma Rodgers 08/13/24 09:00 08/15/24 09:00 Method Batch Dilution Preparation Analysis Analyst Location date/time date/time Total Solids by Method 2540 G-2011 WG2345372 1 08/19/24 15:32 08/19/24 15:42 CMB Mt. Juliet, TN Wet Chemistry by Method 9056A WG2345850 1 08/22/24 11:52 08/22/24 21:06 DLH Mt. Juliet, TN Wet Chemistry by Method D2974 WG2345103 1 08/17/24 14:58 08/17/24 14:58 MMF Mt. Juliet, TN Metals (ICP) by Method 6010D WG2345457 1 08/21/24 08:43 08/21/24 22:21 MAP Mt. Juliet, TN Volatile Organic Compounds (GC) by Method 8015D/GRO WG2348746 250 08/13/24 09:00 08/23/24 07:42 DWR Mt. Juliet, TN Volatile Organic Compounds (GC/MS) by Method 8260D WG2346948 20 08/13/24 09:00 08/21/24 04:42 JHH Mt. Juliet, TN Semi-Volatile Organic Compounds (GC) by Method 8015D WG2349009 1 08/24/24 08:44 08/24/24 17:02 KDB Mt. Juliet, TN Collected by Collected date/time Received date/time TRIP BLANK-240812 L1767917-17 GW Emma Rodgers 08/12/24 09:00 08/15/24 09:00 Method Batch Dilution Preparation Analysis Analyst Location date/time date/time Volatile Organic Compounds (GC/MS) by Method 8260D WG2345653 1 08/19/24 01:19 08/19/24 01:19 JCP Mt. Juliet, TN Collected by Collected date/time Received date/time TRIP BLANK-240813 L1767917-18 GW Emma Rodgers 08/13/24 09:00 08/15/24 09:00 Method Batch Dilution Preparation Analysis Analyst Location date/time date/time Volatile Organic Compounds (GC/MS) by Method 8260D WG2345653 1 08/19/24 01:41 08/19/24 01:41 JCP 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: Arcadis - Chevron - UT 30063821 04.81 L1767917 08/30/24 14:20 6 of 47 ACCOUNT:PROJECT:SDG:DATE/TIME:PAGE: Arcadis - Chevron - UT 30063821 04.81 L1767917 08/30/24 16:11 6 of 47 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] Brian Ford 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: Arcadis - Chevron - UT 30063821 04.81 L1767917 08/30/24 14:20 7 of 47 Brian Ford Project Manager ACCOUNT:PROJECT:SDG:DATE/TIME:PAGE: Arcadis - Chevron - UT 30063821 04.81 L1767917 08/30/24 16:11 7 of 47 SAMPLE RESULTS - 01 L1767917 T-W-N-6-S-5-6-240813 Collected date/time: 08/13/24 11:35 Total Solids by Method 2540 G-2011 Result Qualifier Dilution Analysis Batch Analyte %date / time Total Solids 72.8 1 08/19/2024 12:17 WG2345371 Wet Chemistry by Method 9056A Result (dry)Qualifier MDL (dry)RDL (dry)Dilution Analysis Batch Analyte mg/kg mg/kg mg/kg date / time Sulfate 497 88.6 344 5 08/22/2024 16:48 WG2345850 Wet Chemistry by Method D2974 Result Units Qualifier Dilution Analysis Batch Analyte date / time Fractional Organic Carbon 0.00900 g C/g soil 1 08/17/2024 14:38 WG2345190 Fractional Organic Matter 1.56 %1 08/17/2024 14:38 WG2345190 Metals (ICP) by Method 6010D Result (dry)Qualifier MDL (dry)RDL (dry)Dilution Analysis Batch Analyte mg/kg mg/kg mg/kg date / time Iron 6040 3.08 13.7 1 08/21/2024 21:44 WG2345457 Volatile Organic Compounds (GC) by Method 8015D/GRO Result (dry)Qualifier MDL (dry)RDL (dry)Dilution Analysis Batch Analyte mg/kg mg/kg mg/kg date / time TPH (GC/FID) Low Fraction 1960 19.2 88.3 500 08/22/2024 17:33 WG2348293 (S) a,a,a-Trifluorotoluene(FID)103 77.0-120 08/22/2024 17:33 WG2348293 Volatile Organic Compounds (GC/MS) by Method 8260D Result (dry)Qualifier MDL (dry)RDL (dry)Dilution Analysis Batch Analyte mg/kg mg/kg mg/kg date / time Benzene 0.327 0.0330 0.0706 40 08/21/2024 22:17 WG2347727 Toluene U 0.0918 0.353 40 08/21/2024 22:17 WG2347727 Ethylbenzene 0.134 J 0.0521 0.177 40 08/21/2024 22:17 WG2347727 Total Xylenes 0.113 J 0.0621 0.459 40 08/21/2024 22:17 WG2347727 Methyl tert-butyl ether U 0.0247 0.0706 40 08/21/2024 22:17 WG2347727 Naphthalene U 0.344 0.883 40 08/21/2024 22:17 WG2347727 (S) Toluene-d8 96.2 75.0-131 08/21/2024 22:17 WG2347727 (S) 4-Bromofluorobenzene 96.3 67.0-138 08/21/2024 22:17 WG2347727 (S) 1,2-Dichloroethane-d4 98.8 70.0-130 08/21/2024 22:17 WG2347727 Sample Narrative: L1767917-01 WG2347727: Non-target compounds too high to run at a lower dilution. Semi-Volatile Organic Compounds (GC) by Method 8015D Result (dry)Qualifier MDL (dry)RDL (dry)Dilution Analysis Batch Analyte mg/kg mg/kg mg/kg date / time C10-C28 Diesel Range 31.1 2.21 5.50 1 08/25/2024 18:37 WG2348926 C28-C40 Oil Range 7.54 0.377 5.50 1 08/25/2024 18:37 WG2348926 (S) o-Terphenyl 65.3 18.0-148 08/25/2024 18:37 WG2348926 1 Cp 2 Tc 3 Ss 4 Cn 5 Sr 6 Qc 7 Gl 8 Al 9 Sc ACCOUNT:PROJECT:SDG:DATE/TIME:PAGE: Arcadis - Chevron - UT 30063821 04.81 L1767917 08/30/24 14:20 8 of 47 ACCOUNT:PROJECT:SDG:DATE/TIME:PAGE: Arcadis - Chevron - UT 30063821 04.81 L1767917 08/30/24 16:11 8 of 47 SAMPLE RESULTS - 02 L1767917 T-W-S-5-S-4-5-240813 Collected date/time: 08/13/24 12:05 Total Solids by Method 2540 G-2011 Result Qualifier Dilution Analysis Batch Analyte %date / time Total Solids 80.5 1 08/19/2024 12:17 WG2345371 Wet Chemistry by Method 9056A Result (dry)Qualifier MDL (dry)RDL (dry)Dilution Analysis Batch Analyte mg/kg mg/kg mg/kg date / time Sulfate 339 80.1 311 5 08/22/2024 17:01 WG2345850 Wet Chemistry by Method D2974 Result Units Qualifier Dilution Analysis Batch Analyte date / time Fractional Organic Carbon 0.00390 g C/g soil 1 08/17/2024 14:38 WG2345190 Fractional Organic Matter 0.679 %1 08/17/2024 14:38 WG2345190 Metals (ICP) by Method 6010D Result (dry)Qualifier MDL (dry)RDL (dry)Dilution Analysis Batch Analyte mg/kg mg/kg mg/kg date / time Iron 10600 2.78 12.4 1 08/21/2024 21:46 WG2345457 Volatile Organic Compounds (GC) by Method 8015D/GRO Result (dry)Qualifier MDL (dry)RDL (dry)Dilution Analysis Batch Analyte mg/kg mg/kg mg/kg date / time TPH (GC/FID) Low Fraction 1840 6.76 31.2 200 08/22/2024 17:56 WG2348293 (S) a,a,a-Trifluorotoluene(FID)113 77.0-120 08/22/2024 17:56 WG2348293 Volatile Organic Compounds (GC/MS) by Method 8260D Result (dry)Qualifier MDL (dry)RDL (dry)Dilution Analysis Batch Analyte mg/kg mg/kg mg/kg date / time Benzene U 0.0146 0.0312 20 08/21/2024 22:37 WG2347727 Toluene U 0.0405 0.156 20 08/21/2024 22:37 WG2347727 Ethylbenzene 0.0348 J 0.0229 0.0779 20 08/21/2024 22:37 WG2347727 Total Xylenes 0.0726 J 0.0274 0.203 20 08/21/2024 22:37 WG2347727 Methyl tert-butyl ether U 0.0109 0.0312 20 08/21/2024 22:37 WG2347727 Naphthalene U 0.152 0.390 20 08/21/2024 22:37 WG2347727 (S) Toluene-d8 98.6 75.0-131 08/21/2024 22:37 WG2347727 (S) 4-Bromofluorobenzene 101 67.0-138 08/21/2024 22:37 WG2347727 (S) 1,2-Dichloroethane-d4 99.4 70.0-130 08/21/2024 22:37 WG2347727 Sample Narrative: L1767917-02 WG2347727: Non-target compounds too high to run at a lower dilution. Semi-Volatile Organic Compounds (GC) by Method 8015D Result (dry)Qualifier MDL (dry)RDL (dry)Dilution Analysis Batch Analyte mg/kg mg/kg mg/kg date / time C10-C28 Diesel Range 298 2.00 4.97 1 08/26/2024 21:18 WG2348926 C28-C40 Oil Range 34.2 0.340 4.97 1 08/27/2024 13:29 WG2348926 (S) o-Terphenyl 70.9 18.0-148 08/26/2024 21:18 WG2348926 (S) o-Terphenyl 90.6 18.0-148 08/27/2024 13:29 WG2348926 1 Cp 2 Tc 3 Ss 4 Cn 5 Sr 6 Qc 7 Gl 8 Al 9 Sc ACCOUNT:PROJECT:SDG:DATE/TIME:PAGE: Arcadis - Chevron - UT 30063821 04.81 L1767917 08/30/24 14:20 9 of 47 ACCOUNT:PROJECT:SDG:DATE/TIME:PAGE: Arcadis - Chevron - UT 30063821 04.81 L1767917 08/30/24 16:11 9 of 47 SAMPLE RESULTS - 03 L1767917 T-C-N-6-S-5-6-240813 Collected date/time: 08/13/24 10:50 Total Solids by Method 2540 G-2011 Result Qualifier Dilution Analysis Batch Analyte %date / time Total Solids 75.7 1 08/19/2024 12:17 WG2345371 Wet Chemistry by Method 9056A Result (dry)Qualifier MDL (dry)RDL (dry)Dilution Analysis Batch Analyte mg/kg mg/kg mg/kg date / time Sulfate 523 17.2 66.7 1.01 08/22/2024 17:13 WG2345850 Wet Chemistry by Method D2974 Result Units Qualifier Dilution Analysis Batch Analyte date / time Fractional Organic Carbon 0.00590 g C/g soil 1 08/17/2024 14:38 WG2345190 Fractional Organic Matter 1.01 %1 08/17/2024 14:38 WG2345190 Metals (ICP) by Method 6010D Result (dry)Qualifier MDL (dry)RDL (dry)Dilution Analysis Batch Analyte mg/kg mg/kg mg/kg date / time Iron 4170 2.96 13.2 1 08/21/2024 21:51 WG2345457 Volatile Organic Compounds (GC) by Method 8015D/GRO Result (dry)Qualifier MDL (dry)RDL (dry)Dilution Analysis Batch Analyte mg/kg mg/kg mg/kg date / time TPH (GC/FID) Low Fraction 1760 9.29 42.8 250 08/22/2024 18:20 WG2348293 (S) a,a,a-Trifluorotoluene(FID)112 77.0-120 08/22/2024 18:20 WG2348293 Volatile Organic Compounds (GC/MS) by Method 8260D Result (dry)Qualifier MDL (dry)RDL (dry)Dilution Analysis Batch Analyte mg/kg mg/kg mg/kg date / time Benzene 0.112 0.0160 0.0342 20 08/21/2024 12:55 WG2347001 Toluene 0.0518 J 0.0445 0.171 20 08/21/2024 12:55 WG2347001 Ethylbenzene 0.0915 0.0252 0.0856 20 08/21/2024 12:55 WG2347001 Total Xylenes 0.279 0.0301 0.222 20 08/21/2024 12:55 WG2347001 Methyl tert-butyl ether U 0.0120 0.0342 20 08/21/2024 12:55 WG2347001 Naphthalene U 0.167 0.428 20 08/21/2024 12:55 WG2347001 (S) Toluene-d8 99.6 75.0-131 08/21/2024 12:55 WG2347001 (S) 4-Bromofluorobenzene 97.4 67.0-138 08/21/2024 12:55 WG2347001 (S) 1,2-Dichloroethane-d4 93.1 70.0-130 08/21/2024 12:55 WG2347001 Sample Narrative: L1767917-03 WG2347001: Non-target compounds too high to run at a lower dilution. Semi-Volatile Organic Compounds (GC) by Method 8015D Result (dry)Qualifier MDL (dry)RDL (dry)Dilution Analysis Batch Analyte mg/kg mg/kg mg/kg date / time C10-C28 Diesel Range 169 2.13 5.29 1 08/25/2024 18:51 WG2348926 C28-C40 Oil Range 10.5 0.362 5.29 1 08/25/2024 18:51 WG2348926 (S) o-Terphenyl 68.6 18.0-148 08/25/2024 18:51 WG2348926 1 Cp 2 Tc 3 Ss 4 Cn 5 Sr 6 Qc 7 Gl 8 Al 9 Sc ACCOUNT:PROJECT:SDG:DATE/TIME:PAGE: Arcadis - Chevron - UT 30063821 04.81 L1767917 08/30/24 14:20 10 of 47 ACCOUNT:PROJECT:SDG:DATE/TIME:PAGE: Arcadis - Chevron - UT 30063821 04.81 L1767917 08/30/24 16:11 10 of 47 SAMPLE RESULTS - 04 L1767917 T-E-S-7-S-6-7-240813 Collected date/time: 08/13/24 10:10 Total Solids by Method 2540 G-2011 Result Qualifier Dilution Analysis Batch Analyte %date / time Total Solids 84.3 1 08/19/2024 12:17 WG2345371 Wet Chemistry by Method 9056A Result (dry)Qualifier MDL (dry)RDL (dry)Dilution Analysis Batch Analyte mg/kg mg/kg mg/kg date / time Sulfate 340 15.7 60.5 1.02 08/22/2024 17:26 WG2345850 Wet Chemistry by Method D2974 Result Units Qualifier Dilution Analysis Batch Analyte date / time Fractional Organic Carbon 0.00750 g C/g soil 1 08/17/2024 14:38 WG2345190 Fractional Organic Matter 1.30 %1 08/17/2024 14:38 WG2345190 Metals (ICP) by Method 6010D Result (dry)Qualifier MDL (dry)RDL (dry)Dilution Analysis Batch Analyte mg/kg mg/kg mg/kg date / time Iron 7970 2.66 11.9 1 08/21/2024 21:53 WG2345457 Volatile Organic Compounds (GC) by Method 8015D/GRO Result (dry)Qualifier MDL (dry)RDL (dry)Dilution Analysis Batch Analyte mg/kg mg/kg mg/kg date / time TPH (GC/FID) Low Fraction 423 6.06 27.9 200 08/23/2024 03:21 WG2348842 (S) a,a,a-Trifluorotoluene(FID)84.8 77.0-120 08/23/2024 03:21 WG2348842 Volatile Organic Compounds (GC/MS) by Method 8260D Result (dry)Qualifier MDL (dry)RDL (dry)Dilution Analysis Batch Analyte mg/kg mg/kg mg/kg date / time Benzene 0.334 0.000652 0.00140 1 08/21/2024 07:20 WG2347001 Toluene 0.00958 0.00182 0.00699 1 08/21/2024 07:20 WG2347001 Ethylbenzene 0.0711 0.00103 0.00349 1 08/21/2024 07:20 WG2347001 Total Xylenes 0.0429 0.00123 0.00908 1 08/21/2024 07:20 WG2347001 Methyl tert-butyl ether U 0.000489 0.00140 1 08/21/2024 07:20 WG2347001 Naphthalene U 0.00682 0.0175 1 08/21/2024 07:20 WG2347001 (S) Toluene-d8 85.8 75.0-131 08/21/2024 07:20 WG2347001 (S) 4-Bromofluorobenzene 101 67.0-138 08/21/2024 07:20 WG2347001 (S) 1,2-Dichloroethane-d4 82.1 70.0-130 08/21/2024 07:20 WG2347001 Semi-Volatile Organic Compounds (GC) by Method 8015D Result (dry)Qualifier MDL (dry)RDL (dry)Dilution Analysis Batch Analyte mg/kg mg/kg mg/kg date / time C10-C28 Diesel Range 69.8 9.55 23.7 5 08/25/2024 21:14 WG2348926 C28-C40 Oil Range 224 1.63 23.7 5 08/25/2024 21:14 WG2348926 (S) o-Terphenyl 71.2 18.0-148 08/25/2024 21:14 WG2348926 1 Cp 2 Tc 3 Ss 4 Cn 5 Sr 6 Qc 7 Gl 8 Al 9 Sc ACCOUNT:PROJECT:SDG:DATE/TIME:PAGE: Arcadis - Chevron - UT 30063821 04.81 L1767917 08/30/24 14:20 11 of 47 ACCOUNT:PROJECT:SDG:DATE/TIME:PAGE: Arcadis - Chevron - UT 30063821 04.81 L1767917 08/30/24 16:11 11 of 47 SAMPLE RESULTS - 05 L1767917 GPTEX-2-S-4-5-240812 Collected date/time: 08/12/24 10:00 Total Solids by Method 2540 G-2011 Result Qualifier Dilution Analysis Batch Analyte %date / time Total Solids 83.5 1 08/19/2024 12:17 WG2345371 Wet Chemistry by Method 9056A Result (dry)Qualifier MDL (dry)RDL (dry)Dilution Analysis Batch Analyte mg/kg mg/kg mg/kg date / time Sulfate 101 15.4 59.9 1 08/22/2024 17:39 WG2345850 Wet Chemistry by Method D2974 Result Units Qualifier Dilution Analysis Batch Analyte date / time Fractional Organic Carbon 0.00330 g C/g soil 1 08/17/2024 14:38 WG2345190 Fractional Organic Matter 0.566 %1 08/17/2024 14:38 WG2345190 Metals (ICP) by Method 6010D Result (dry)Qualifier MDL (dry)RDL (dry)Dilution Analysis Batch Analyte mg/kg mg/kg mg/kg date / time Iron 8460 2.68 12.0 1 08/21/2024 21:55 WG2345457 Volatile Organic Compounds (GC) by Method 8015D/GRO Result (dry)Qualifier MDL (dry)RDL (dry)Dilution Analysis Batch Analyte mg/kg mg/kg mg/kg date / time TPH (GC/FID) Low Fraction 1360 6.12 28.2 200 08/22/2024 05:03 WG2347851 (S) a,a,a-Trifluorotoluene(FID)89.0 77.0-120 08/22/2024 05:03 WG2347851 Volatile Organic Compounds (GC/MS) by Method 8260D Result (dry)Qualifier MDL (dry)RDL (dry)Dilution Analysis Batch Analyte mg/kg mg/kg mg/kg date / time Benzene U 0.0132 0.0282 20 08/21/2024 13:15 WG2347001 Toluene U 0.0366 0.141 20 08/21/2024 13:15 WG2347001 Ethylbenzene U 0.0207 0.0705 20 08/21/2024 13:15 WG2347001 Total Xylenes U 0.0248 0.183 20 08/21/2024 13:15 WG2347001 Methyl tert-butyl ether U 0.00987 0.0282 20 08/21/2024 13:15 WG2347001 Naphthalene U 0.138 0.352 20 08/21/2024 13:15 WG2347001 (S) Toluene-d8 93.8 75.0-131 08/21/2024 13:15 WG2347001 (S) 4-Bromofluorobenzene 100 67.0-138 08/21/2024 13:15 WG2347001 (S) 1,2-Dichloroethane-d4 94.2 70.0-130 08/21/2024 13:15 WG2347001 Sample Narrative: L1767917-05 WG2347001: Non-target compounds too high to run at a lower dilution. Semi-Volatile Organic Compounds (GC) by Method 8015D Result (dry)Qualifier MDL (dry)RDL (dry)Dilution Analysis Batch Analyte mg/kg mg/kg mg/kg date / time C10-C28 Diesel Range 148 1.93 4.79 1 08/25/2024 20:09 WG2348926 C28-C40 Oil Range 12.4 0.328 4.79 1 08/25/2024 20:09 WG2348926 (S) o-Terphenyl 70.6 18.0-148 08/25/2024 20:09 WG2348926 1 Cp 2 Tc 3 Ss 4 Cn 5 Sr 6 Qc 7 Gl 8 Al 9 Sc ACCOUNT:PROJECT:SDG:DATE/TIME:PAGE: Arcadis - Chevron - UT 30063821 04.81 L1767917 08/30/24 14:20 12 of 47 ACCOUNT:PROJECT:SDG:DATE/TIME:PAGE: Arcadis - Chevron - UT 30063821 04.81 L1767917 08/30/24 16:11 12 of 47 SAMPLE RESULTS - 06 L1767917 GPTEX-4-S-3-4-240813 Collected date/time: 08/13/24 09:15 Total Solids by Method 2540 G-2011 Result Qualifier Dilution Analysis Batch Analyte %date / time Total Solids 64.4 1 08/19/2024 12:17 WG2345371 Wet Chemistry by Method 9056A Result (dry)Qualifier MDL (dry)RDL (dry)Dilution Analysis Batch Analyte mg/kg mg/kg mg/kg date / time Sulfate 56.4 J 20.5 79.2 1.02 08/22/2024 17:52 WG2345850 Wet Chemistry by Method D2974 Result Units Qualifier Dilution Analysis Batch Analyte date / time Fractional Organic Carbon 0.0313 g C/g soil 1 08/17/2024 14:38 WG2345190 Fractional Organic Matter 5.39 %1 08/17/2024 14:38 WG2345190 Metals (ICP) by Method 6010D Result (dry)Qualifier MDL (dry)RDL (dry)Dilution Analysis Batch Analyte mg/kg mg/kg mg/kg date / time Iron 7360 V 3.48 15.5 1 08/21/2024 21:34 WG2345457 Volatile Organic Compounds (GC) by Method 8015D/GRO Result (dry)Qualifier MDL (dry)RDL (dry)Dilution Analysis Batch Analyte mg/kg mg/kg mg/kg date / time TPH (GC/FID) Low Fraction 59.9 1.26 5.81 28.5 08/22/2024 16:23 WG2348293 (S) a,a,a-Trifluorotoluene(FID)99.0 77.0-120 08/22/2024 16:23 WG2348293 Volatile Organic Compounds (GC/MS) by Method 8260D Result (dry)Qualifier MDL (dry)RDL (dry)Dilution Analysis Batch Analyte mg/kg mg/kg mg/kg date / time Benzene 0.00342 0.00108 0.00232 1.14 08/21/2024 07:39 WG2347001 Toluene 0.00518 J 0.00302 0.0116 1.14 08/21/2024 07:39 WG2347001 Ethylbenzene 0.00709 0.00171 0.00581 1.14 08/21/2024 07:39 WG2347001 Total Xylenes 0.0300 0.00204 0.0151 1.14 08/21/2024 07:39 WG2347001 Methyl tert-butyl ether U 0.000813 0.00232 1.14 08/21/2024 07:39 WG2347001 Naphthalene 0.0279 J 0.0113 0.0291 1.14 08/21/2024 07:39 WG2347001 (S) Toluene-d8 96.9 75.0-131 08/21/2024 07:39 WG2347001 (S) 4-Bromofluorobenzene 101 67.0-138 08/21/2024 07:39 WG2347001 (S) 1,2-Dichloroethane-d4 88.8 70.0-130 08/21/2024 07:39 WG2347001 Semi-Volatile Organic Compounds (GC) by Method 8015D Result (dry)Qualifier MDL (dry)RDL (dry)Dilution Analysis Batch Analyte mg/kg mg/kg mg/kg date / time C10-C28 Diesel Range 42.4 2.50 6.22 1 08/25/2024 20:48 WG2348926 C28-C40 Oil Range 185 0.426 6.22 1 08/25/2024 20:48 WG2348926 (S) o-Terphenyl 69.4 18.0-148 08/25/2024 20:48 WG2348926 1 Cp 2 Tc 3 Ss 4 Cn 5 Sr 6 Qc 7 Gl 8 Al 9 Sc ACCOUNT:PROJECT:SDG:DATE/TIME:PAGE: Arcadis - Chevron - UT 30063821 04.81 L1767917 08/30/24 14:20 13 of 47 ACCOUNT:PROJECT:SDG:DATE/TIME:PAGE: Arcadis - Chevron - UT 30063821 04.81 L1767917 08/30/24 16:11 13 of 47 SAMPLE RESULTS - 07 L1767917 MWTEX-4-S-4-5-240812 Collected date/time: 08/12/24 13:40 Total Solids by Method 2540 G-2011 Result Qualifier Dilution Analysis Batch Analyte %date / time Total Solids 85.8 1 08/19/2024 12:17 WG2345371 Wet Chemistry by Method 9056A Result (dry)Qualifier MDL (dry)RDL (dry)Dilution Analysis Batch Analyte mg/kg mg/kg mg/kg date / time Sulfate 17.1 J 15.0 58.3 1 08/22/2024 18:44 WG2345850 Wet Chemistry by Method D2974 Result Units Qualifier Dilution Analysis Batch Analyte date / time Fractional Organic Carbon 0.00840 g C/g soil 1 08/17/2024 14:38 WG2345190 Fractional Organic Matter 1.46 %1 08/17/2024 14:38 WG2345190 Metals (ICP) by Method 6010D Result (dry)Qualifier MDL (dry)RDL (dry)Dilution Analysis Batch Analyte mg/kg mg/kg mg/kg date / time Iron 10800 2.61 11.7 1 08/21/2024 21:57 WG2345457 Volatile Organic Compounds (GC) by Method 8015D/GRO Result (dry)Qualifier MDL (dry)RDL (dry)Dilution Analysis Batch Analyte mg/kg mg/kg mg/kg date / time TPH (GC/FID) Low Fraction 446 2.99 13.8 100 08/22/2024 20:59 WG2348232 (S) a,a,a-Trifluorotoluene(FID)114 77.0-120 08/22/2024 20:59 WG2348232 Volatile Organic Compounds (GC/MS) by Method 8260D Result (dry)Qualifier MDL (dry)RDL (dry)Dilution Analysis Batch Analyte mg/kg mg/kg mg/kg date / time Benzene 0.244 0.000643 0.00138 1 08/21/2024 07:59 WG2347001 Toluene 0.0272 0.00179 0.00688 1 08/21/2024 07:59 WG2347001 Ethylbenzene 0.107 0.00101 0.00344 1 08/21/2024 07:59 WG2347001 Total Xylenes 0.183 0.00121 0.00894 1 08/21/2024 07:59 WG2347001 Methyl tert-butyl ether U 0.000482 0.00138 1 08/21/2024 07:59 WG2347001 Naphthalene 0.149 0.00671 0.0172 1 08/21/2024 07:59 WG2347001 (S) Toluene-d8 91.4 75.0-131 08/21/2024 07:59 WG2347001 (S) 4-Bromofluorobenzene 103 67.0-138 08/21/2024 07:59 WG2347001 (S) 1,2-Dichloroethane-d4 97.1 70.0-130 08/21/2024 07:59 WG2347001 Semi-Volatile Organic Compounds (GC) by Method 8015D Result (dry)Qualifier MDL (dry)RDL (dry)Dilution Analysis Batch Analyte mg/kg mg/kg mg/kg date / time C10-C28 Diesel Range 478 93.8 233 50 08/27/2024 13:42 WG2348926 C28-C40 Oil Range 2240 16.0 233 50 08/27/2024 13:42 WG2348926 (S) o-Terphenyl 90.7 J7 18.0-148 08/27/2024 13:42 WG2348926 1 Cp 2 Tc 3 Ss 4 Cn 5 Sr 6 Qc 7 Gl 8 Al 9 Sc ACCOUNT:PROJECT:SDG:DATE/TIME:PAGE: Arcadis - Chevron - UT 30063821 04.81 L1767917 08/30/24 14:20 14 of 47 ACCOUNT:PROJECT:SDG:DATE/TIME:PAGE: Arcadis - Chevron - UT 30063821 04.81 L1767917 08/30/24 16:11 14 of 47 SAMPLE RESULTS - 08 L1767917 MWTEX-4-S-9-10-240812 Collected date/time: 08/12/24 13:55 Total Solids by Method 2540 G-2011 Result Qualifier Dilution Analysis Batch Analyte %date / time Total Solids 78.1 1 08/19/2024 15:42 WG2345372 Wet Chemistry by Method 9056A Result (dry)Qualifier MDL (dry)RDL (dry)Dilution Analysis Batch Analyte mg/kg mg/kg mg/kg date / time Sulfate 53.8 J 16.9 65.3 1.02 08/22/2024 19:23 WG2345850 Wet Chemistry by Method D2974 Result Units Qualifier Dilution Analysis Batch Analyte date / time Fractional Organic Carbon 0.00420 g C/g soil 1 08/17/2024 14:38 WG2345190 Fractional Organic Matter 0.726 %1 08/17/2024 14:38 WG2345190 Metals (ICP) by Method 6010D Result (dry)Qualifier MDL (dry)RDL (dry)Dilution Analysis Batch Analyte mg/kg mg/kg mg/kg date / time Iron 6390 2.87 12.8 1 08/21/2024 21:58 WG2345457 Volatile Organic Compounds (GC) by Method 8015D/GRO Result (dry)Qualifier MDL (dry)RDL (dry)Dilution Analysis Batch Analyte mg/kg mg/kg mg/kg date / time TPH (GC/FID) Low Fraction 461 3.59 16.6 100 08/22/2024 21:22 WG2348232 (S) a,a,a-Trifluorotoluene(FID)112 77.0-120 08/22/2024 21:22 WG2348232 Volatile Organic Compounds (GC/MS) by Method 8260D Result (dry)Qualifier MDL (dry)RDL (dry)Dilution Analysis Batch Analyte mg/kg mg/kg mg/kg date / time Benzene 0.340 0.000774 0.00166 1 08/21/2024 08:19 WG2347001 Toluene 0.0192 0.00215 0.00828 1 08/21/2024 08:19 WG2347001 Ethylbenzene 0.992 0.00122 0.00414 1 08/21/2024 08:19 WG2347001 Total Xylenes 0.184 0.00146 0.0108 1 08/21/2024 08:19 WG2347001 Methyl tert-butyl ether U 0.000580 0.00166 1 08/21/2024 08:19 WG2347001 Naphthalene 2.97 0.00808 0.0207 1 08/21/2024 08:19 WG2347001 (S) Toluene-d8 90.3 75.0-131 08/21/2024 08:19 WG2347001 (S) 4-Bromofluorobenzene 106 67.0-138 08/21/2024 08:19 WG2347001 (S) 1,2-Dichloroethane-d4 101 70.0-130 08/21/2024 08:19 WG2347001 Semi-Volatile Organic Compounds (GC) by Method 8015D Result (dry)Qualifier MDL (dry)RDL (dry)Dilution Analysis Batch Analyte mg/kg mg/kg mg/kg date / time C10-C28 Diesel Range 50.6 2.06 5.12 1 08/25/2024 20:35 WG2348926 C28-C40 Oil Range 15.0 0.351 5.12 1 08/25/2024 20:35 WG2348926 (S) o-Terphenyl 64.1 18.0-148 08/25/2024 20:35 WG2348926 1 Cp 2 Tc 3 Ss 4 Cn 5 Sr 6 Qc 7 Gl 8 Al 9 Sc ACCOUNT:PROJECT:SDG:DATE/TIME:PAGE: Arcadis - Chevron - UT 30063821 04.81 L1767917 08/30/24 14:20 15 of 47 ACCOUNT:PROJECT:SDG:DATE/TIME:PAGE: Arcadis - Chevron - UT 30063821 04.81 L1767917 08/30/24 16:11 15 of 47 SAMPLE RESULTS - 09 L1767917 HA-15-S-4-5-240812 Collected date/time: 08/12/24 11:00 Total Solids by Method 2540 G-2011 Result Qualifier Dilution Analysis Batch Analyte %date / time Total Solids 76.8 1 08/19/2024 15:42 WG2345372 Wet Chemistry by Method 9056A Result (dry)Qualifier MDL (dry)RDL (dry)Dilution Analysis Batch Analyte mg/kg mg/kg mg/kg date / time Sulfate 436 16.8 65.1 1 08/22/2024 19:36 WG2345850 Wet Chemistry by Method D2974 Result Units Qualifier Dilution Analysis Batch Analyte date / time Fractional Organic Carbon 0.00440 g C/g soil 1 08/17/2024 14:58 WG2345103 Fractional Organic Matter 0.758 %1 08/17/2024 14:58 WG2345103 Metals (ICP) by Method 6010D Result (dry)Qualifier MDL (dry)RDL (dry)Dilution Analysis Batch Analyte mg/kg mg/kg mg/kg date / time Iron 11500 2.92 13.0 1 08/21/2024 22:00 WG2345457 Volatile Organic Compounds (GC) by Method 8015D/GRO Result (dry)Qualifier MDL (dry)RDL (dry)Dilution Analysis Batch Analyte mg/kg mg/kg mg/kg date / time TPH (GC/FID) Low Fraction 1900 7.23 33.3 200 08/22/2024 05:23 WG2347851 (S) a,a,a-Trifluorotoluene(FID)112 77.0-120 08/22/2024 05:23 WG2347851 Volatile Organic Compounds (GC/MS) by Method 8260D Result (dry)Qualifier MDL (dry)RDL (dry)Dilution Analysis Batch Analyte mg/kg mg/kg mg/kg date / time Benzene U 0.0156 0.0333 20 08/21/2024 13:34 WG2347001 Toluene U 0.0433 0.167 20 08/21/2024 13:34 WG2347001 Ethylbenzene 0.101 0.0245 0.0833 20 08/21/2024 13:34 WG2347001 Total Xylenes 0.0781 J 0.0293 0.217 20 08/21/2024 13:34 WG2347001 Methyl tert-butyl ether U 0.0117 0.0333 20 08/21/2024 13:34 WG2347001 Naphthalene U 0.163 0.417 20 08/21/2024 13:34 WG2347001 (S) Toluene-d8 93.7 75.0-131 08/21/2024 13:34 WG2347001 (S) 4-Bromofluorobenzene 95.1 67.0-138 08/21/2024 13:34 WG2347001 (S) 1,2-Dichloroethane-d4 92.1 70.0-130 08/21/2024 13:34 WG2347001 Sample Narrative: L1767917-09 WG2347001: Non-target compounds too high to run at a lower dilution. Semi-Volatile Organic Compounds (GC) by Method 8015D Result (dry)Qualifier MDL (dry)RDL (dry)Dilution Analysis Batch Analyte mg/kg mg/kg mg/kg date / time C10-C28 Diesel Range 134 2.10 5.21 1 08/25/2024 20:22 WG2348926 C28-C40 Oil Range 5.91 0.357 5.21 1 08/25/2024 20:22 WG2348926 (S) o-Terphenyl 60.0 18.0-148 08/25/2024 20:22 WG2348926 1 Cp 2 Tc 3 Ss 4 Cn 5 Sr 6 Qc 7 Gl 8 Al 9 Sc ACCOUNT:PROJECT:SDG:DATE/TIME:PAGE: Arcadis - Chevron - UT 30063821 04.81 L1767917 08/30/24 14:20 16 of 47 ACCOUNT:PROJECT:SDG:DATE/TIME:PAGE: Arcadis - Chevron - UT 30063821 04.81 L1767917 08/30/24 16:11 16 of 47 SAMPLE RESULTS - 10 L1767917 HA-18-S-4-5-240812 Collected date/time: 08/12/24 14:35 Total Solids by Method 2540 G-2011 Result Qualifier Dilution Analysis Batch Analyte %date / time Total Solids 85.0 1 08/19/2024 15:42 WG2345372 Wet Chemistry by Method 9056A Result (dry)Qualifier MDL (dry)RDL (dry)Dilution Analysis Batch Analyte mg/kg mg/kg mg/kg date / time Sulfate 250 15.2 58.8 1 08/22/2024 19:48 WG2345850 Wet Chemistry by Method D2974 Result Units Qualifier Dilution Analysis Batch Analyte date / time Fractional Organic Carbon 0.0217 g C/g soil 1 08/17/2024 14:58 WG2345103 Fractional Organic Matter 3.74 %1 08/17/2024 14:58 WG2345103 Metals (ICP) by Method 6010D Result (dry)Qualifier MDL (dry)RDL (dry)Dilution Analysis Batch Analyte mg/kg mg/kg mg/kg date / time Iron 5700 2.64 11.8 1 08/21/2024 22:02 WG2345457 Volatile Organic Compounds (GC) by Method 8015D/GRO Result (dry)Qualifier MDL (dry)RDL (dry)Dilution Analysis Batch Analyte mg/kg mg/kg mg/kg date / time TPH (GC/FID) Low Fraction 10900 75.2 346 2500 08/22/2024 21:45 WG2348232 (S) a,a,a-Trifluorotoluene(FID)106 77.0-120 08/22/2024 21:45 WG2348232 Volatile Organic Compounds (GC/MS) by Method 8260D Result (dry)Qualifier MDL (dry)RDL (dry)Dilution Analysis Batch Analyte mg/kg mg/kg mg/kg date / time Benzene 0.0740 0.0259 0.0554 40 08/21/2024 03:23 WG2346948 Toluene U 0.0720 0.277 40 08/21/2024 03:23 WG2346948 Ethylbenzene 0.585 0.0408 0.138 40 08/21/2024 03:23 WG2346948 Total Xylenes 0.298 J 0.0487 0.360 40 08/21/2024 03:23 WG2346948 Methyl tert-butyl ether U 0.0194 0.0554 40 08/21/2024 03:23 WG2346948 Naphthalene 3.58 0.270 0.692 40 08/21/2024 03:23 WG2346948 (S) Toluene-d8 86.0 75.0-131 08/21/2024 03:23 WG2346948 (S) 4-Bromofluorobenzene 232 J1 67.0-138 08/21/2024 03:23 WG2346948 (S) 1,2-Dichloroethane-d4 91.0 70.0-130 08/21/2024 03:23 WG2346948 Sample Narrative: L1767917-10 WG2346948: Non-target compounds too high to run at a lower dilution. Semi-Volatile Organic Compounds (GC) by Method 8015D Result (dry)Qualifier MDL (dry)RDL (dry)Dilution Analysis Batch Analyte mg/kg mg/kg mg/kg date / time C10-C28 Diesel Range 7920 379 941 200 08/25/2024 22:18 WG2348926 C28-C40 Oil Range 7920 64.5 941 200 08/25/2024 22:18 WG2348926 (S) o-Terphenyl 0.000 J7 18.0-148 08/25/2024 22:18 WG2348926 1 Cp 2 Tc 3 Ss 4 Cn 5 Sr 6 Qc 7 Gl 8 Al 9 Sc ACCOUNT:PROJECT:SDG:DATE/TIME:PAGE: Arcadis - Chevron - UT 30063821 04.81 L1767917 08/30/24 14:20 17 of 47 ACCOUNT:PROJECT:SDG:DATE/TIME:PAGE: Arcadis - Chevron - UT 30063821 04.81 L1767917 08/30/24 16:11 17 of 47 SAMPLE RESULTS - 11 L1767917 HA-18-S-5-6-240812 Collected date/time: 08/12/24 14:40 Total Solids by Method 2540 G-2011 Result Qualifier Dilution Analysis Batch Analyte %date / time Total Solids 59.3 1 08/19/2024 15:42 WG2345372 Wet Chemistry by Method 9056A Result (dry)Qualifier MDL (dry)RDL (dry)Dilution Analysis Batch Analyte mg/kg mg/kg mg/kg date / time Sulfate 560 21.8 84.3 1 08/22/2024 20:01 WG2345850 Wet Chemistry by Method D2974 Result Units Qualifier Dilution Analysis Batch Analyte date / time Fractional Organic Carbon 0.0173 g C/g soil 1 08/17/2024 14:58 WG2345103 Fractional Organic Matter 2.99 %1 08/17/2024 14:58 WG2345103 Metals (ICP) by Method 6010D Result (dry)Qualifier MDL (dry)RDL (dry)Dilution Analysis Batch Analyte mg/kg mg/kg mg/kg date / time Iron 12400 3.78 16.9 1 08/21/2024 22:04 WG2345457 Volatile Organic Compounds (GC) by Method 8015D/GRO Result (dry)Qualifier MDL (dry)RDL (dry)Dilution Analysis Batch Analyte mg/kg mg/kg mg/kg date / time TPH (GC/FID) Low Fraction 3240 26.4 121 500 08/22/2024 06:01 WG2347851 (S) a,a,a-Trifluorotoluene(FID)86.8 77.0-120 08/22/2024 06:01 WG2347851 Volatile Organic Compounds (GC/MS) by Method 8260D Result (dry)Qualifier MDL (dry)RDL (dry)Dilution Analysis Batch Analyte mg/kg mg/kg mg/kg date / time Benzene U 0.0452 0.0967 40 08/21/2024 03:43 WG2346948 Toluene U 0.126 0.484 40 08/21/2024 03:43 WG2346948 Ethylbenzene U 0.0713 0.242 40 08/21/2024 03:43 WG2346948 Total Xylenes 0.143 J 0.0851 0.629 40 08/21/2024 03:43 WG2346948 Methyl tert-butyl ether U 0.0339 0.0967 40 08/21/2024 03:43 WG2346948 Naphthalene U 0.472 1.21 40 08/21/2024 03:43 WG2346948 (S) Toluene-d8 95.9 75.0-131 08/21/2024 03:43 WG2346948 (S) 4-Bromofluorobenzene 99.8 67.0-138 08/21/2024 03:43 WG2346948 (S) 1,2-Dichloroethane-d4 92.9 70.0-130 08/21/2024 03:43 WG2346948 Sample Narrative: L1767917-11 WG2346948: Non-target compounds too high to run at a lower dilution. Semi-Volatile Organic Compounds (GC) by Method 8015D Result (dry)Qualifier MDL (dry)RDL (dry)Dilution Analysis Batch Analyte mg/kg mg/kg mg/kg date / time C10-C28 Diesel Range 2480 27.2 67.5 10 08/25/2024 21:39 WG2348926 C28-C40 Oil Range 981 4.62 67.5 10 08/25/2024 21:39 WG2348926 (S) o-Terphenyl 69.5 18.0-148 08/25/2024 21:39 WG2348926 1 Cp 2 Tc 3 Ss 4 Cn 5 Sr 6 Qc 7 Gl 8 Al 9 Sc ACCOUNT:PROJECT:SDG:DATE/TIME:PAGE: Arcadis - Chevron - UT 30063821 04.81 L1767917 08/30/24 14:20 18 of 47 ACCOUNT:PROJECT:SDG:DATE/TIME:PAGE: Arcadis - Chevron - UT 30063821 04.81 L1767917 08/30/24 16:11 18 of 47 SAMPLE RESULTS - 12 L1767917 HA-18-S-6-7-240812 Collected date/time: 08/12/24 14:45 Total Solids by Method 2540 G-2011 Result Qualifier Dilution Analysis Batch Analyte %date / time Total Solids 65.7 1 08/19/2024 15:42 WG2345372 Wet Chemistry by Method 9056A Result (dry)Qualifier MDL (dry)RDL (dry)Dilution Analysis Batch Analyte mg/kg mg/kg mg/kg date / time Sulfate 344 19.6 76.2 1 08/22/2024 20:14 WG2345850 Wet Chemistry by Method D2974 Result Units Qualifier Dilution Analysis Batch Analyte date / time Fractional Organic Carbon 0.0331 g C/g soil 1 08/17/2024 14:58 WG2345103 Fractional Organic Matter 5.71 %1 08/17/2024 14:58 WG2345103 Metals (ICP) by Method 6010D Result (dry)Qualifier MDL (dry)RDL (dry)Dilution Analysis Batch Analyte mg/kg mg/kg mg/kg date / time Iron 8090 3.41 15.2 1 08/21/2024 22:05 WG2345457 Volatile Organic Compounds (GC) by Method 8015D/GRO Result (dry)Qualifier MDL (dry)RDL (dry)Dilution Analysis Batch Analyte mg/kg mg/kg mg/kg date / time TPH (GC/FID) Low Fraction 2280 8.92 41.1 200 08/22/2024 06:20 WG2347851 (S) a,a,a-Trifluorotoluene(FID)88.2 77.0-120 08/22/2024 06:20 WG2347851 Volatile Organic Compounds (GC/MS) by Method 8260D Result (dry)Qualifier MDL (dry)RDL (dry)Dilution Analysis Batch Analyte mg/kg mg/kg mg/kg date / time Benzene U 0.0192 0.0411 20 08/21/2024 04:03 WG2346948 Toluene U 0.0535 0.206 20 08/21/2024 04:03 WG2346948 Ethylbenzene U 0.0302 0.103 20 08/21/2024 04:03 WG2346948 Total Xylenes 0.0615 J 0.0362 0.267 20 08/21/2024 04:03 WG2346948 Methyl tert-butyl ether U 0.0144 0.0411 20 08/21/2024 04:03 WG2346948 Naphthalene U 0.201 0.514 20 08/21/2024 04:03 WG2346948 (S) Toluene-d8 97.7 75.0-131 08/21/2024 04:03 WG2346948 (S) 4-Bromofluorobenzene 149 J1 67.0-138 08/21/2024 04:03 WG2346948 (S) 1,2-Dichloroethane-d4 88.1 70.0-130 08/21/2024 04:03 WG2346948 Sample Narrative: L1767917-12 WG2346948: Non-target compounds too high to run at a lower dilution. Semi-Volatile Organic Compounds (GC) by Method 8015D Result (dry)Qualifier MDL (dry)RDL (dry)Dilution Analysis Batch Analyte mg/kg mg/kg mg/kg date / time C10-C28 Diesel Range 387 24.5 60.9 10 08/26/2024 22:10 WG2348926 C28-C40 Oil Range 303 4.17 60.9 10 08/27/2024 13:29 WG2348926 (S) o-Terphenyl 81.2 18.0-148 08/26/2024 22:10 WG2348926 (S) o-Terphenyl 65.9 18.0-148 08/27/2024 13:29 WG2348926 1 Cp 2 Tc 3 Ss 4 Cn 5 Sr 6 Qc 7 Gl 8 Al 9 Sc ACCOUNT:PROJECT:SDG:DATE/TIME:PAGE: Arcadis - Chevron - UT 30063821 04.81 L1767917 08/30/24 14:20 19 of 47 ACCOUNT:PROJECT:SDG:DATE/TIME:PAGE: Arcadis - Chevron - UT 30063821 04.81 L1767917 08/30/24 16:11 19 of 47 SAMPLE RESULTS - 13 L1767917 HA-22-S-4-5-240812 Collected date/time: 08/12/24 11:40 Total Solids by Method 2540 G-2011 Result Qualifier Dilution Analysis Batch Analyte %date / time Total Solids 71.4 1 08/19/2024 15:42 WG2345372 Wet Chemistry by Method 9056A Result (dry)Qualifier MDL (dry)RDL (dry)Dilution Analysis Batch Analyte mg/kg mg/kg mg/kg date / time Sulfate 505 18.1 70.0 1 08/22/2024 20:27 WG2345850 Wet Chemistry by Method D2974 Result Units Qualifier Dilution Analysis Batch Analyte date / time Fractional Organic Carbon 0.0106 g C/g soil 1 08/17/2024 14:58 WG2345103 Fractional Organic Matter 1.83 %1 08/17/2024 14:58 WG2345103 Metals (ICP) by Method 6010D Result (dry)Qualifier MDL (dry)RDL (dry)Dilution Analysis Batch Analyte mg/kg mg/kg mg/kg date / time Iron 8070 3.14 14.0 1 08/21/2024 22:07 WG2345457 Volatile Organic Compounds (GC) by Method 8015D/GRO Result (dry)Qualifier MDL (dry)RDL (dry)Dilution Analysis Batch Analyte mg/kg mg/kg mg/kg date / time TPH (GC/FID) Low Fraction 3410 20.3 93.1 500 08/22/2024 06:40 WG2347851 (S) a,a,a-Trifluorotoluene(FID)97.5 77.0-120 08/22/2024 06:40 WG2347851 Volatile Organic Compounds (GC/MS) by Method 8260D Result (dry)Qualifier MDL (dry)RDL (dry)Dilution Analysis Batch Analyte mg/kg mg/kg mg/kg date / time Benzene 0.389 0.0348 0.0745 40 08/21/2024 04:23 WG2346948 Toluene U 0.0968 0.372 40 08/21/2024 04:23 WG2346948 Ethylbenzene 0.352 0.0549 0.186 40 08/21/2024 04:23 WG2346948 Total Xylenes 0.773 0.0655 0.484 40 08/21/2024 04:23 WG2346948 Methyl tert-butyl ether U 0.0261 0.0745 40 08/21/2024 04:23 WG2346948 Naphthalene 0.443 J 0.363 0.931 40 08/21/2024 04:23 WG2346948 (S) Toluene-d8 96.4 75.0-131 08/21/2024 04:23 WG2346948 (S) 4-Bromofluorobenzene 100 67.0-138 08/21/2024 04:23 WG2346948 (S) 1,2-Dichloroethane-d4 96.6 70.0-130 08/21/2024 04:23 WG2346948 Sample Narrative: L1767917-13 WG2346948: Non-target compounds too high to run at a lower dilution. Semi-Volatile Organic Compounds (GC) by Method 8015D Result (dry)Qualifier MDL (dry)RDL (dry)Dilution Analysis Batch Analyte mg/kg mg/kg mg/kg date / time C10-C28 Diesel Range 151 2.26 5.60 1 08/25/2024 19:55 WG2348926 C28-C40 Oil Range 5.25 J 0.384 5.60 1 08/25/2024 19:55 WG2348926 (S) o-Terphenyl 54.6 18.0-148 08/25/2024 19:55 WG2348926 1 Cp 2 Tc 3 Ss 4 Cn 5 Sr 6 Qc 7 Gl 8 Al 9 Sc ACCOUNT:PROJECT:SDG:DATE/TIME:PAGE: Arcadis - Chevron - UT 30063821 04.81 L1767917 08/30/24 14:20 20 of 47 ACCOUNT:PROJECT:SDG:DATE/TIME:PAGE: Arcadis - Chevron - UT 30063821 04.81 L1767917 08/30/24 16:11 20 of 47 SAMPLE RESULTS - 14 L1767917 HA-22-S-5-6-240812 Collected date/time: 08/12/24 11:50 Total Solids by Method 2540 G-2011 Result Qualifier Dilution Analysis Batch Analyte %date / time Total Solids 75.1 1 08/19/2024 15:42 WG2345372 Wet Chemistry by Method 9056A Result (dry)Qualifier MDL (dry)RDL (dry)Dilution Analysis Batch Analyte mg/kg mg/kg mg/kg date / time Sulfate 526 17.2 66.6 1 08/22/2024 20:40 WG2345850 Wet Chemistry by Method D2974 Result Units Qualifier Dilution Analysis Batch Analyte date / time Fractional Organic Carbon 0.00470 g C/g soil 1 08/17/2024 14:58 WG2345103 Fractional Organic Matter 0.802 %1 08/17/2024 14:58 WG2345103 Metals (ICP) by Method 6010D Result (dry)Qualifier MDL (dry)RDL (dry)Dilution Analysis Batch Analyte mg/kg mg/kg mg/kg date / time Iron 11300 2.98 13.3 1 08/21/2024 22:18 WG2345457 Volatile Organic Compounds (GC) by Method 8015D/GRO Result (dry)Qualifier MDL (dry)RDL (dry)Dilution Analysis Batch Analyte mg/kg mg/kg mg/kg date / time TPH (GC/FID) Low Fraction 76.7 0.919 4.23 25 08/22/2024 03:07 WG2347851 (S) a,a,a-Trifluorotoluene(FID)89.1 77.0-120 08/22/2024 03:07 WG2347851 Volatile Organic Compounds (GC/MS) by Method 8260D Result (dry)Qualifier MDL (dry)RDL (dry)Dilution Analysis Batch Analyte mg/kg mg/kg mg/kg date / time Benzene 0.0401 0.000791 0.00169 1 08/20/2024 23:07 WG2346948 Toluene 0.00296 J 0.00220 0.00847 1 08/20/2024 23:07 WG2346948 Ethylbenzene 0.0101 0.00125 0.00423 1 08/20/2024 23:07 WG2346948 Total Xylenes 0.0118 0.00149 0.0110 1 08/20/2024 23:07 WG2346948 Methyl tert-butyl ether U 0.000593 0.00169 1 08/20/2024 23:07 WG2346948 Naphthalene 0.0133 J 0.00826 0.0212 1 08/20/2024 23:07 WG2346948 (S) Toluene-d8 96.6 75.0-131 08/20/2024 23:07 WG2346948 (S) 4-Bromofluorobenzene 94.9 67.0-138 08/20/2024 23:07 WG2346948 (S) 1,2-Dichloroethane-d4 88.6 70.0-130 08/20/2024 23:07 WG2346948 Semi-Volatile Organic Compounds (GC) by Method 8015D Result (dry)Qualifier MDL (dry)RDL (dry)Dilution Analysis Batch Analyte mg/kg mg/kg mg/kg date / time C10-C28 Diesel Range 4.54 J 2.14 5.33 1 08/24/2024 17:54 WG2349009 C28-C40 Oil Range U 0.365 5.33 1 08/24/2024 17:54 WG2349009 (S) o-Terphenyl 51.4 18.0-148 08/24/2024 17:54 WG2349009 1 Cp 2 Tc 3 Ss 4 Cn 5 Sr 6 Qc 7 Gl 8 Al 9 Sc ACCOUNT:PROJECT:SDG:DATE/TIME:PAGE: Arcadis - Chevron - UT 30063821 04.81 L1767917 08/30/24 14:20 21 of 47 ACCOUNT:PROJECT:SDG:DATE/TIME:PAGE: Arcadis - Chevron - UT 30063821 04.81 L1767917 08/30/24 16:11 21 of 47 SAMPLE RESULTS - 15 L1767917 HA-22-S-6-7-240812 Collected date/time: 08/12/24 11:45 Total Solids by Method 2540 G-2011 Result Qualifier Dilution Analysis Batch Analyte %date / time Total Solids 74.1 1 08/19/2024 15:42 WG2345372 Wet Chemistry by Method 9056A Result (dry)Qualifier MDL (dry)RDL (dry)Dilution Analysis Batch Analyte mg/kg mg/kg mg/kg date / time Sulfate 531 17.4 67.5 1 08/22/2024 20:53 WG2345850 Wet Chemistry by Method D2974 Result Units Qualifier Dilution Analysis Batch Analyte date / time Fractional Organic Carbon 0.00470 g C/g soil 1 08/17/2024 14:58 WG2345103 Fractional Organic Matter 0.804 %1 08/17/2024 14:58 WG2345103 Metals (ICP) by Method 6010D Result (dry)Qualifier MDL (dry)RDL (dry)Dilution Analysis Batch Analyte mg/kg mg/kg mg/kg date / time Iron 12600 3.02 13.5 1 08/21/2024 22:20 WG2345457 Volatile Organic Compounds (GC) by Method 8015D/GRO Result (dry)Qualifier MDL (dry)RDL (dry)Dilution Analysis Batch Analyte mg/kg mg/kg mg/kg date / time TPH (GC/FID) Low Fraction 49.2 0.978 4.50 25 08/23/2024 05:22 WG2348746 (S) a,a,a-Trifluorotoluene(FID)99.8 77.0-120 08/23/2024 05:22 WG2348746 Volatile Organic Compounds (GC/MS) by Method 8260D Result (dry)Qualifier MDL (dry)RDL (dry)Dilution Analysis Batch Analyte mg/kg mg/kg mg/kg date / time Benzene 0.0124 0.000841 0.00180 1 08/20/2024 23:27 WG2346948 Toluene U 0.00234 0.00900 1 08/20/2024 23:27 WG2346948 Ethylbenzene 0.0107 0.00133 0.00450 1 08/20/2024 23:27 WG2346948 Total Xylenes 0.0107 J 0.00158 0.0117 1 08/20/2024 23:27 WG2346948 Methyl tert-butyl ether U 0.000630 0.00180 1 08/20/2024 23:27 WG2346948 Naphthalene 0.0108 J 0.00879 0.0225 1 08/20/2024 23:27 WG2346948 (S) Toluene-d8 100 75.0-131 08/20/2024 23:27 WG2346948 (S) 4-Bromofluorobenzene 95.9 67.0-138 08/20/2024 23:27 WG2346948 (S) 1,2-Dichloroethane-d4 87.9 70.0-130 08/20/2024 23:27 WG2346948 Semi-Volatile Organic Compounds (GC) by Method 8015D Result (dry)Qualifier MDL (dry)RDL (dry)Dilution Analysis Batch Analyte mg/kg mg/kg mg/kg date / time C10-C28 Diesel Range 7.94 2.17 5.40 1 08/24/2024 18:20 WG2349009 C28-C40 Oil Range 3.70 J 0.370 5.40 1 08/24/2024 18:20 WG2349009 (S) o-Terphenyl 51.1 18.0-148 08/24/2024 18:20 WG2349009 1 Cp 2 Tc 3 Ss 4 Cn 5 Sr 6 Qc 7 Gl 8 Al 9 Sc ACCOUNT:PROJECT:SDG:DATE/TIME:PAGE: Arcadis - Chevron - UT 30063821 04.81 L1767917 08/30/24 14:20 22 of 47 ACCOUNT:PROJECT:SDG:DATE/TIME:PAGE: Arcadis - Chevron - UT 30063821 04.81 L1767917 08/30/24 16:11 22 of 47 SAMPLE RESULTS - 16 L1767917 BD-S-240813 Collected date/time: 08/13/24 09:00 Total Solids by Method 2540 G-2011 Result Qualifier Dilution Analysis Batch Analyte %date / time Total Solids 65.2 1 08/19/2024 15:42 WG2345372 Wet Chemistry by Method 9056A Result (dry)Qualifier MDL (dry)RDL (dry)Dilution Analysis Batch Analyte mg/kg mg/kg mg/kg date / time Sulfate 558 19.8 76.6 1 08/22/2024 21:06 WG2345850 Wet Chemistry by Method D2974 Result Units Qualifier Dilution Analysis Batch Analyte date / time Fractional Organic Carbon 0.0104 g C/g soil 1 08/17/2024 14:58 WG2345103 Fractional Organic Matter 1.79 %1 08/17/2024 14:58 WG2345103 Metals (ICP) by Method 6010D Result (dry)Qualifier MDL (dry)RDL (dry)Dilution Analysis Batch Analyte mg/kg mg/kg mg/kg date / time Iron 6000 3.43 15.3 1 08/21/2024 22:21 WG2345457 Volatile Organic Compounds (GC) by Method 8015D/GRO Result (dry)Qualifier MDL (dry)RDL (dry)Dilution Analysis Batch Analyte mg/kg mg/kg mg/kg date / time TPH (GC/FID) Low Fraction 2870 11.5 52.8 250 08/23/2024 07:42 WG2348746 (S) a,a,a-Trifluorotoluene(FID)116 77.0-120 08/23/2024 07:42 WG2348746 Volatile Organic Compounds (GC/MS) by Method 8260D Result (dry)Qualifier MDL (dry)RDL (dry)Dilution Analysis Batch Analyte mg/kg mg/kg mg/kg date / time Benzene 0.146 0.0197 0.0423 20 08/21/2024 04:42 WG2346948 Toluene 0.0807 J 0.0549 0.211 20 08/21/2024 04:42 WG2346948 Ethylbenzene 0.228 0.0311 0.106 20 08/21/2024 04:42 WG2346948 Total Xylenes 0.467 0.0372 0.275 20 08/21/2024 04:42 WG2346948 Methyl tert-butyl ether U 0.0148 0.0423 20 08/21/2024 04:42 WG2346948 Naphthalene U 0.206 0.528 20 08/21/2024 04:42 WG2346948 (S) Toluene-d8 96.2 75.0-131 08/21/2024 04:42 WG2346948 (S) 4-Bromofluorobenzene 99.6 67.0-138 08/21/2024 04:42 WG2346948 (S) 1,2-Dichloroethane-d4 97.7 70.0-130 08/21/2024 04:42 WG2346948 Sample Narrative: L1767917-16 WG2346948: Non-target compounds too high to run at a lower dilution. Semi-Volatile Organic Compounds (GC) by Method 8015D Result (dry)Qualifier MDL (dry)RDL (dry)Dilution Analysis Batch Analyte mg/kg mg/kg mg/kg date / time C10-C28 Diesel Range 57.2 2.47 6.13 1 08/24/2024 17:02 WG2349009 C28-C40 Oil Range U 0.420 6.13 1 08/24/2024 17:02 WG2349009 (S) o-Terphenyl 52.8 18.0-148 08/24/2024 17:02 WG2349009 1 Cp 2 Tc 3 Ss 4 Cn 5 Sr 6 Qc 7 Gl 8 Al 9 Sc ACCOUNT:PROJECT:SDG:DATE/TIME:PAGE: Arcadis - Chevron - UT 30063821 04.81 L1767917 08/30/24 14:20 23 of 47 ACCOUNT:PROJECT:SDG:DATE/TIME:PAGE: Arcadis - Chevron - UT 30063821 04.81 L1767917 08/30/24 16:11 23 of 47 SAMPLE RESULTS - 17 L1767917 TRIP BLANK-240812 Collected date/time: 08/12/24 09:00 Volatile Organic Compounds (GC/MS) by Method 8260D Result Qualifier MDL RDL Dilution Analysis Batch Analyte mg/l mg/l mg/l date / time Benzene U 0.0000941 0.00100 1 08/19/2024 01:19 WG2345653 Toluene U 0.000278 0.00100 1 08/19/2024 01:19 WG2345653 Ethylbenzene U 0.000137 0.00100 1 08/19/2024 01:19 WG2345653 Total Xylenes U 0.000174 0.00300 1 08/19/2024 01:19 WG2345653 Methyl tert-butyl ether U 0.000101 0.00100 1 08/19/2024 01:19 WG2345653 Naphthalene U C3 0.00100 0.00500 1 08/19/2024 01:19 WG2345653 (S) Toluene-d8 103 80.0-120 08/19/2024 01:19 WG2345653 (S) 4-Bromofluorobenzene 105 77.0-126 08/19/2024 01:19 WG2345653 (S) 1,2-Dichloroethane-d4 113 70.0-130 08/19/2024 01:19 WG2345653 1 Cp 2 Tc 3 Ss 4 Cn 5 Sr 6 Qc 7 Gl 8 Al 9 Sc ACCOUNT:PROJECT:SDG:DATE/TIME:PAGE: Arcadis - Chevron - UT 30063821 04.81 L1767917 08/30/24 14:20 24 of 47 ACCOUNT:PROJECT:SDG:DATE/TIME:PAGE: Arcadis - Chevron - UT 30063821 04.81 L1767917 08/30/24 16:11 24 of 47 SAMPLE RESULTS - 18 L1767917 TRIP BLANK-240813 Collected date/time: 08/13/24 09:00 Volatile Organic Compounds (GC/MS) by Method 8260D Result Qualifier MDL RDL Dilution Analysis Batch Analyte mg/l mg/l mg/l date / time Benzene U 0.0000941 0.00100 1 08/19/2024 01:41 WG2345653 Toluene U 0.000278 0.00100 1 08/19/2024 01:41 WG2345653 Ethylbenzene U 0.000137 0.00100 1 08/19/2024 01:41 WG2345653 Total Xylenes U 0.000174 0.00300 1 08/19/2024 01:41 WG2345653 Methyl tert-butyl ether U 0.000101 0.00100 1 08/19/2024 01:41 WG2345653 Naphthalene U C3 0.00100 0.00500 1 08/19/2024 01:41 WG2345653 (S) Toluene-d8 103 80.0-120 08/19/2024 01:41 WG2345653 (S) 4-Bromofluorobenzene 105 77.0-126 08/19/2024 01:41 WG2345653 (S) 1,2-Dichloroethane-d4 112 70.0-130 08/19/2024 01:41 WG2345653 1 Cp 2 Tc 3 Ss 4 Cn 5 Sr 6 Qc 7 Gl 8 Al 9 Sc ACCOUNT:PROJECT:SDG:DATE/TIME:PAGE: Arcadis - Chevron - UT 30063821 04.81 L1767917 08/30/24 14:20 25 of 47 ACCOUNT:PROJECT:SDG:DATE/TIME:PAGE: Arcadis - Chevron - UT 30063821 04.81 L1767917 08/30/24 16:11 25 of 47 QUALITY CONTROL SUMMARYWG2345371 Total Solids by Method 2540 G-2011 L1767917-01,02,03,04,05,06,07 Method Blank (MB) (MB) R4108971-1 08/19/24 12:17 MB Result MB Qualifier MB MDL MB RDL Analyte %%% Total Solids 0.00100 L1768898-09 Original Sample (OS) • Duplicate (DUP) (OS) L1768898-09 08/19/24 12:17 • (DUP) R4108971-3 08/19/24 12:17 Original Result DUP Result Dilution DUP RPD DUP Qualifier DUP RPD Limits Analyte %%%% Total Solids 86.5 87.1 1 0.684 10 Laboratory Control Sample (LCS) (LCS) R4108971-2 08/19/24 12:17 Spike Amount LCS Result LCS Rec.Rec. Limits LCS Qualifier Analyte %%%% Total Solids 50.0 50.0 100 90.0-110 1 Cp 2 Tc 3 Ss 4 Cn 5 Sr 6 Qc 7 Gl 8 Al 9 Sc ACCOUNT:PROJECT:SDG:DATE/TIME:PAGE: Arcadis - Chevron - UT 30063821 04.81 L1767917 08/30/24 14:20 26 of 47 ACCOUNT:PROJECT:SDG:DATE/TIME:PAGE: Arcadis - Chevron - UT 30063821 04.81 L1767917 08/30/24 16:11 26 of 47 QUALITY CONTROL SUMMARYWG2345372 Total Solids by Method 2540 G-2011 L1767917-08,09,10,11,12,13,14,15,16 Method Blank (MB) (MB) R4109056-1 08/19/24 15:42 MB Result MB Qualifier MB MDL MB RDL Analyte %%% Total Solids 0.000 L1767917-09 Original Sample (OS) • Duplicate (DUP) (OS) L1767917-09 08/19/24 15:42 • (DUP) R4109056-3 08/19/24 15:42 Original Result DUP Result Dilution DUP RPD DUP Qualifier DUP RPD Limits Analyte %%%% Total Solids 76.8 75.9 1 1.16 10 Laboratory Control Sample (LCS) (LCS) R4109056-2 08/19/24 15:42 Spike Amount LCS Result LCS Rec.Rec. Limits LCS Qualifier Analyte %%%% Total Solids 50.0 50.0 100 90.0-110 1 Cp 2 Tc 3 Ss 4 Cn 5 Sr 6 Qc 7 Gl 8 Al 9 Sc ACCOUNT:PROJECT:SDG:DATE/TIME:PAGE: Arcadis - Chevron - UT 30063821 04.81 L1767917 08/30/24 14:20 27 of 47 ACCOUNT:PROJECT:SDG:DATE/TIME:PAGE: Arcadis - Chevron - UT 30063821 04.81 L1767917 08/30/24 16:11 27 of 47 QUALITY CONTROL SUMMARYWG2345850 Wet Chemistry by Method 9056A L1767917-01,02,03,04,05,06,07,08,09,10,11,12,13,14,15,16 Method Blank (MB) (MB) R4111599-1 08/22/24 16:09 MB Result MB Qualifier MB MDL MB RDL Analyte mg/kg mg/kg mg/kg Sulfate U 12.9 50.0 L1767917-06 Original Sample (OS) • Duplicate (DUP) (OS) L1767917-06 08/22/24 17:52 • (DUP) R4111599-3 08/22/24 18:05 Original Result (dry) DUP Result (dry)Dilution DUP RPD DUP Qualifier DUP RPD Limits Analyte mg/kg mg/kg %% Sulfate 56.4 74.5 1.04 27.6 J P1 15 L1767917-16 Original Sample (OS) • Duplicate (DUP) (OS) L1767917-16 08/22/24 21:06 • (DUP) R4111599-6 08/22/24 21:19 Original Result (dry) DUP Result (dry)Dilution DUP RPD DUP Qualifier DUP RPD Limits Analyte mg/kg mg/kg %% Sulfate 558 620 1 10.4 15 Laboratory Control Sample (LCS) (LCS) R4111599-2 08/22/24 16:22 Spike Amount LCS Result LCS Rec.Rec. Limits LCS Qualifier Analyte mg/kg mg/kg %% Sulfate 200 200 100 80.0-120 L1767917-06 Original Sample (OS) • Matrix Spike (MS) • Matrix Spike Duplicate (MSD) (OS) L1767917-06 08/22/24 17:52 • (MS) R4111599-4 08/22/24 18:18 • (MSD) R4111599-5 08/22/24 18:31 Spike Amount (dry) Original Result (dry)MS Result (dry)MSD Result (dry)MS Rec.MSD Rec.Dilution Rec. Limits MS Qualifier MSD Qualifier RPD RPD Limits Analyte mg/kg mg/kg mg/kg mg/kg %%%%% Sulfate 311 56.4 380 386 104 106 1.03 80.0-120 1.72 15 1 Cp 2 Tc 3 Ss 4 Cn 5 Sr 6 Qc 7 Gl 8 Al 9 Sc ACCOUNT:PROJECT:SDG:DATE/TIME:PAGE: Arcadis - Chevron - UT 30063821 04.81 L1767917 08/30/24 14:20 28 of 47 ACCOUNT:PROJECT:SDG:DATE/TIME:PAGE: Arcadis - Chevron - UT 30063821 04.81 L1767917 08/30/24 16:11 28 of 47 QUALITY CONTROL SUMMARYWG2345103 Wet Chemistry by Method D2974 L1767917-09,10,11,12,13,14,15,16 Method Blank (MB) (MB) R4109165-1 08/17/24 14:58 MB Result MB Qualifier MB MDL MB RDL Analyte g C/g soil g C/g soil g C/g soil Fractional Organic Carbon 0.000 Fractional Organic Matter 0.000100 L1767917-16 Original Sample (OS) • Duplicate (DUP) (OS) L1767917-16 08/17/24 14:58 • (DUP) R4109165-2 08/17/24 14:58 Original Result DUP Result Dilution DUP RPD DUP Qualifier DUP RPD Limits Analyte g C/g soil g C/g soil %% Fractional Organic Carbon 0.0104 0.00980 1 5.94 20 Fractional Organic Matter 1.79 1.70 1 5.10 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: Arcadis - Chevron - UT 30063821 04.81 L1767917 08/30/24 14:20 29 of 47 ACCOUNT:PROJECT:SDG:DATE/TIME:PAGE: Arcadis - Chevron - UT 30063821 04.81 L1767917 08/30/24 16:11 29 of 47 QUALITY CONTROL SUMMARYWG2345190 Wet Chemistry by Method D2974 L1767917-01,02,03,04,05,06,07,08 Method Blank (MB) (MB) R4109192-1 08/17/24 14:38 MB Result MB Qualifier MB MDL MB RDL Analyte g C/g soil g C/g soil g C/g soil Fractional Organic Carbon 0.000 Fractional Organic Matter 0.000200 L1767917-08 Original Sample (OS) • Duplicate (DUP) (OS) L1767917-08 08/17/24 14:38 • (DUP) R4109192-2 08/17/24 14:38 Original Result DUP Result Dilution DUP RPD DUP Qualifier DUP RPD Limits Analyte g C/g soil g C/g soil %% Fractional Organic Carbon 0.00420 0.00350 1 18.2 20 Fractional Organic Matter 0.726 0.610 1 17.4 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: Arcadis - Chevron - UT 30063821 04.81 L1767917 08/30/24 14:20 30 of 47 ACCOUNT:PROJECT:SDG:DATE/TIME:PAGE: Arcadis - Chevron - UT 30063821 04.81 L1767917 08/30/24 16:11 30 of 47 QUALITY CONTROL SUMMARYWG2345457 Metals (ICP) by Method 6010D L1767917-01,02,03,04,05,06,07,08,09,10,11,12,13,14,15,16 Method Blank (MB) (MB) R4109965-1 08/21/24 21:30 MB Result MB Qualifier MB MDL MB RDL Analyte mg/kg mg/kg mg/kg Iron U 2.24 10.0 Laboratory Control Sample (LCS) (LCS) R4109965-2 08/21/24 21:32 Spike Amount LCS Result LCS Rec.Rec. Limits LCS Qualifier Analyte mg/kg mg/kg %% Iron 1000 1020 102 80.0-120 L1767917-06 Original Sample (OS) • Matrix Spike (MS) • Matrix Spike Duplicate (MSD) (OS) L1767917-06 08/21/24 21:34 • (MS) R4109965-5 08/21/24 21:39 • (MSD) R4109965-6 08/21/24 21:41 Spike Amount (dry) Original Result (dry)MS Result (dry)MSD Result (dry)MS Rec.MSD Rec.Dilution Rec. Limits MS Qualifier MSD Qualifier RPD RPD Limits Analyte mg/kg mg/kg mg/kg mg/kg %%%%% Iron 1550 7360 8870 8340 97.5 63.3 1 75.0-125 V 6.18 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: Arcadis - Chevron - UT 30063821 04.81 L1767917 08/30/24 14:20 31 of 47 ACCOUNT:PROJECT:SDG:DATE/TIME:PAGE: Arcadis - Chevron - UT 30063821 04.81 L1767917 08/30/24 16:11 31 of 47 QUALITY CONTROL SUMMARYWG2347851 Volatile Organic Compounds (GC) by Method 8015D/GRO L1767917-05,09,11,12,13,14 Method Blank (MB) (MB) R4110069-2 08/21/24 21:39 MB Result MB Qualifier MB MDL MB RDL Analyte mg/kg mg/kg mg/kg TPH (GC/FID) Low Fraction U 0.543 2.50 (S) a,a,a-Trifluorotoluene(FID)88.8 77.0-120 Laboratory Control Sample (LCS) • Laboratory Control Sample Duplicate (LCSD) (LCS) R4110069-1 08/21/24 20:41 • (LCSD) R4110069-3 08/22/24 01:50 Spike Amount LCS Result LCSD Result LCS Rec.LCSD Rec.Rec. Limits LCS Qualifier LCSD Qualifier RPD RPD Limits Analyte mg/kg mg/kg mg/kg %%%%% TPH (GC/FID) Low Fraction 5.00 5.19 6.06 104 121 72.0-127 15.5 20 (S) a,a,a-Trifluorotoluene(FID) 94.2 104 77.0-120 L1768008-05 Original Sample (OS) • Matrix Spike (MS) • Matrix Spike Duplicate (MSD) (OS) L1768008-05 08/22/24 04:44 • (MS) R4110069-4 08/22/24 07:38 • (MSD) R4110069-5 08/22/24 07:57 Spike Amount (dry) Original Result (dry)MS Result (dry)MSD Result (dry)MS Rec.MSD Rec.Dilution Rec. Limits MS Qualifier MSD Qualifier RPD RPD Limits Analyte mg/kg %%%%% TPH (GC/FID) Low Fraction 132 5.76 143 142 104 103 25 10.0-151 0.602 28 (S) a,a,a-Trifluorotoluene(FID) 95.4 95.8 77.0-120 1 Cp 2 Tc 3 Ss 4 Cn 5 Sr 6 Qc 7 Gl 8 Al 9 Sc ACCOUNT:PROJECT:SDG:DATE/TIME:PAGE: Arcadis - Chevron - UT 30063821 04.81 L1767917 08/30/24 14:20 32 of 47 ACCOUNT:PROJECT:SDG:DATE/TIME:PAGE: Arcadis - Chevron - UT 30063821 04.81 L1767917 08/30/24 16:11 32 of 47 QUALITY CONTROL SUMMARYWG2348232 Volatile Organic Compounds (GC) by Method 8015D/GRO L1767917-07,08,10 Method Blank (MB) (MB) R4110749-3 08/22/24 18:00 MB Result MB Qualifier MB MDL MB RDL Analyte mg/kg mg/kg mg/kg TPH (GC/FID) Low Fraction U 0.543 2.50 (S) a,a,a-Trifluorotoluene(FID)107 77.0-120 Laboratory Control Sample (LCS) • Laboratory Control Sample Duplicate (LCSD) (LCS) R4110749-1 08/22/24 16:27 • (LCSD) R4110749-2 08/22/24 16:50 Spike Amount LCS Result LCSD Result LCS Rec.LCSD Rec.Rec. Limits LCS Qualifier LCSD Qualifier RPD RPD Limits Analyte mg/kg mg/kg mg/kg %%%%% TPH (GC/FID) Low Fraction 5.00 4.71 5.08 94.2 102 72.0-127 7.56 20 (S) a,a,a-Trifluorotoluene(FID) 111 111 77.0-120 1 Cp 2 Tc 3 Ss 4 Cn 5 Sr 6 Qc 7 Gl 8 Al 9 Sc ACCOUNT:PROJECT:SDG:DATE/TIME:PAGE: Arcadis - Chevron - UT 30063821 04.81 L1767917 08/30/24 14:20 33 of 47 ACCOUNT:PROJECT:SDG:DATE/TIME:PAGE: Arcadis - Chevron - UT 30063821 04.81 L1767917 08/30/24 16:11 33 of 47 QUALITY CONTROL SUMMARYWG2348293 Volatile Organic Compounds (GC) by Method 8015D/GRO L1767917-01,02,03,06 Method Blank (MB) (MB) R4110582-2 08/22/24 11:42 MB Result MB Qualifier MB MDL MB RDL Analyte mg/kg mg/kg mg/kg TPH (GC/FID) Low Fraction 1.19 J 0.543 2.50 (S) a,a,a-Trifluorotoluene(FID)98.6 77.0-120 Laboratory Control Sample (LCS) (LCS) R4110582-1 08/22/24 10:32 Spike Amount LCS Result LCS Rec.Rec. Limits LCS Qualifier Analyte mg/kg mg/kg %% TPH (GC/FID) Low Fraction 5.00 5.44 109 72.0-127 (S) a,a,a-Trifluorotoluene(FID) 110 77.0-120 1 Cp 2 Tc 3 Ss 4 Cn 5 Sr 6 Qc 7 Gl 8 Al 9 Sc ACCOUNT:PROJECT:SDG:DATE/TIME:PAGE: Arcadis - Chevron - UT 30063821 04.81 L1767917 08/30/24 14:20 34 of 47 ACCOUNT:PROJECT:SDG:DATE/TIME:PAGE: Arcadis - Chevron - UT 30063821 04.81 L1767917 08/30/24 16:11 34 of 47 QUALITY CONTROL SUMMARYWG2348746 Volatile Organic Compounds (GC) by Method 8015D/GRO L1767917-15,16 Method Blank (MB) (MB) R4110711-3 08/23/24 00:43 MB Result MB Qualifier MB MDL MB RDL Analyte mg/kg mg/kg mg/kg TPH (GC/FID) Low Fraction 0.981 J 0.543 2.50 (S) a,a,a-Trifluorotoluene(FID)99.5 77.0-120 Laboratory Control Sample (LCS) • Laboratory Control Sample Duplicate (LCSD) (LCS) R4110711-1 08/22/24 22:46 • (LCSD) R4110711-2 08/22/24 23:09 Spike Amount LCS Result LCSD Result LCS Rec.LCSD Rec.Rec. Limits LCS Qualifier LCSD Qualifier RPD RPD Limits Analyte mg/kg mg/kg mg/kg %%%%% TPH (GC/FID) Low Fraction 5.00 5.00 5.48 100 110 72.0-127 9.16 20 (S) a,a,a-Trifluorotoluene(FID) 107 107 77.0-120 L1768466-01 Original Sample (OS) • Matrix Spike (MS) • Matrix Spike Duplicate (MSD) (OS) L1768466-01 08/23/24 01:06 • (MS) R4110711-4 08/23/24 08:29 • (MSD) R4110711-5 08/23/24 08:56 Spike Amount (dry) Original Result (dry)MS Result (dry)MSD Result (dry)MS Rec.MSD Rec.Dilution Rec. Limits MS Qualifier MSD Qualifier RPD RPD Limits Analyte mg/kg mg/kg mg/kg mg/kg %%%%% TPH (GC/FID) Low Fraction 136 1.08 143 132 104 95.8 25 10.0-151 8.33 28 (S) a,a,a-Trifluorotoluene(FID) 106 107 77.0-120 1 Cp 2 Tc 3 Ss 4 Cn 5 Sr 6 Qc 7 Gl 8 Al 9 Sc ACCOUNT:PROJECT:SDG:DATE/TIME:PAGE: Arcadis - Chevron - UT 30063821 04.81 L1767917 08/30/24 14:20 35 of 47 ACCOUNT:PROJECT:SDG:DATE/TIME:PAGE: Arcadis - Chevron - UT 30063821 04.81 L1767917 08/30/24 16:11 35 of 47 QUALITY CONTROL SUMMARYWG2348842 Volatile Organic Compounds (GC) by Method 8015D/GRO L1767917-04 Method Blank (MB) (MB) R4110801-3 08/22/24 20:24 MB Result MB Qualifier MB MDL MB RDL Analyte mg/kg mg/kg mg/kg TPH (GC/FID) Low Fraction 0.684 J 0.543 2.50 (S) a,a,a-Trifluorotoluene(FID)82.5 77.0-120 Laboratory Control Sample (LCS) • Laboratory Control Sample Duplicate (LCSD) (LCS) R4110801-1 08/22/24 18:53 • (LCSD) R4110801-2 08/22/24 19:12 Spike Amount LCS Result LCSD Result LCS Rec.LCSD Rec.Rec. Limits LCS Qualifier LCSD Qualifier RPD RPD Limits Analyte mg/kg mg/kg mg/kg %%%%% TPH (GC/FID) Low Fraction 5.00 4.74 4.72 94.8 94.4 72.0-127 0.423 20 (S) a,a,a-Trifluorotoluene(FID) 94.7 93.0 77.0-120 1 Cp 2 Tc 3 Ss 4 Cn 5 Sr 6 Qc 7 Gl 8 Al 9 Sc ACCOUNT:PROJECT:SDG:DATE/TIME:PAGE: Arcadis - Chevron - UT 30063821 04.81 L1767917 08/30/24 14:20 36 of 47 ACCOUNT:PROJECT:SDG:DATE/TIME:PAGE: Arcadis - Chevron - UT 30063821 04.81 L1767917 08/30/24 16:11 36 of 47 QUALITY CONTROL SUMMARYWG2345653 Volatile Organic Compounds (GC/MS) by Method 8260D L1767917-17,18 Method Blank (MB) (MB) R4109194-4 08/18/24 23:56 MB Result MB Qualifier MB MDL MB RDL Analyte mg/l mg/l mg/l Benzene U 0.0000941 0.00100 Toluene U 0.000278 0.00100 Ethylbenzene U 0.000137 0.00100 Total Xylenes U 0.000174 0.00300 Methyl tert-butyl ether U 0.000101 0.00100 Naphthalene U 0.00100 0.00500 (S) Toluene-d8 103 80.0-120 (S) 4-Bromofluorobenzene 106 77.0-126 (S) 1,2-Dichloroethane-d4 114 70.0-130 Laboratory Control Sample (LCS) • Laboratory Control Sample Duplicate (LCSD) (LCS) R4109194-1 08/18/24 22:32 • (LCSD) R4109194-2 08/18/24 22:53 Spike Amount LCS Result LCSD Result LCS Rec.LCSD Rec.Rec. Limits LCS Qualifier LCSD Qualifier RPD RPD Limits Analyte mg/l mg/l mg/l %%%%% Benzene 0.00500 0.00531 0.00511 106 102 70.0-123 3.84 20 Toluene 0.00500 0.00504 0.00485 101 97.0 79.0-120 3.84 20 Ethylbenzene 0.00500 0.00492 0.00480 98.4 96.0 79.0-123 2.47 20 Total Xylenes 0.0150 0.0146 0.0141 97.3 94.0 79.0-123 3.48 20 Methyl tert-butyl ether 0.00500 0.00547 0.00539 109 108 68.0-125 1.47 20 Naphthalene 0.00500 0.00397 0.00401 79.4 80.2 54.0-135 J J 1.00 20 (S) Toluene-d8 102 103 80.0-120 (S) 4-Bromofluorobenzene 106 106 77.0-126 (S) 1,2-Dichloroethane-d4 118 117 70.0-130 L1767331-04 Original Sample (OS) • Matrix Spike (MS) • Matrix Spike Duplicate (MSD) (OS) L1767331-04 08/19/24 03:26 • (MS) R4109194-5 08/19/24 07:59 • (MSD) R4109194-6 08/19/24 08:20 Spike Amount Original Result MS Result MSD Result MS Rec.MSD Rec.Dilution Rec. Limits MS Qualifier MSD Qualifier RPD RPD Limits Analyte mg/l mg/l mg/l mg/l %%%%% Benzene 0.00500 U 0.00440 0.00421 88.0 84.2 1 17.0-158 4.41 27 Toluene 0.00500 U 0.00422 0.00410 84.4 82.0 1 26.0-154 2.88 28 Ethylbenzene 0.00500 U 0.00413 0.00425 82.6 85.0 1 30.0-155 2.86 27 Total Xylenes 0.0150 U 0.0124 0.0119 82.7 79.3 1 29.0-154 4.12 28 Methyl tert-butyl ether 0.00500 U 0.00458 0.00452 91.6 90.4 1 28.0-150 1.32 29 Naphthalene 0.00500 U 0.00330 0.00339 66.0 67.8 1 12.0-156 J J 2.69 35 (S) Toluene-d8 101 102 80.0-120 (S) 4-Bromofluorobenzene 105 106 77.0-126 (S) 1,2-Dichloroethane-d4 118 121 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: Arcadis - Chevron - UT 30063821 04.81 L1767917 08/30/24 14:20 37 of 47 ACCOUNT:PROJECT:SDG:DATE/TIME:PAGE: Arcadis - Chevron - UT 30063821 04.81 L1767917 08/30/24 16:11 37 of 47 QUALITY CONTROL SUMMARYWG2346948 Volatile Organic Compounds (GC/MS) by Method 8260D L1767917-10,11,12,13,14,15,16 Method Blank (MB) (MB) R4110076-2 08/20/24 21:12 MB Result MB Qualifier MB MDL MB RDL Analyte mg/kg mg/kg mg/kg Benzene U 0.000467 0.00100 Toluene U 0.00130 0.00500 Ethylbenzene U 0.000737 0.00250 Total Xylenes U 0.000880 0.00650 Methyl tert-butyl ether U 0.000350 0.00100 Naphthalene U 0.00488 0.0125 (S) Toluene-d8 99.7 75.0-131 (S) 4-Bromofluorobenzene 93.9 67.0-138 (S) 1,2-Dichloroethane-d4 91.6 70.0-130 Laboratory Control Sample (LCS) (LCS) R4110076-1 08/20/24 19:54 Spike Amount LCS Result LCS Rec.Rec. Limits LCS Qualifier Analyte mg/kg mg/kg %% Benzene 0.125 0.121 96.8 70.0-123 Toluene 0.125 0.117 93.6 75.0-121 Ethylbenzene 0.125 0.124 99.2 74.0-126 Total Xylenes 0.375 0.377 101 72.0-127 Methyl tert-butyl ether 0.125 0.135 108 66.0-132 Naphthalene 0.125 0.112 89.6 59.0-130 (S) Toluene-d8 98.8 75.0-131 (S) 4-Bromofluorobenzene 99.2 67.0-138 (S) 1,2-Dichloroethane-d4 101 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: Arcadis - Chevron - UT 30063821 04.81 L1767917 08/30/24 14:20 38 of 47 ACCOUNT:PROJECT:SDG:DATE/TIME:PAGE: Arcadis - Chevron - UT 30063821 04.81 L1767917 08/30/24 16:11 38 of 47 QUALITY CONTROL SUMMARYWG2347001 Volatile Organic Compounds (GC/MS) by Method 8260D L1767917-03,04,05,06,07,08,09 Method Blank (MB) (MB) R4110127-2 08/21/24 06:40 MB Result MB Qualifier MB MDL MB RDL Analyte mg/kg mg/kg mg/kg Benzene U 0.000467 0.00100 Toluene U 0.00130 0.00500 Ethylbenzene U 0.000737 0.00250 Total Xylenes U 0.000880 0.00650 Methyl tert-butyl ether U 0.000350 0.00100 Naphthalene U 0.00488 0.0125 (S) Toluene-d8 96.9 75.0-131 (S) 4-Bromofluorobenzene 91.4 67.0-138 (S) 1,2-Dichloroethane-d4 94.6 70.0-130 Laboratory Control Sample (LCS) (LCS) R4110127-1 08/21/24 05:42 Spike Amount LCS Result LCS Rec.Rec. Limits LCS Qualifier Analyte mg/kg mg/kg %% Benzene 0.125 0.116 92.8 70.0-123 Toluene 0.125 0.122 97.6 75.0-121 Ethylbenzene 0.125 0.122 97.6 74.0-126 Total Xylenes 0.375 0.366 97.6 72.0-127 Methyl tert-butyl ether 0.125 0.130 104 66.0-132 Naphthalene 0.125 0.101 80.8 59.0-130 (S) Toluene-d8 98.1 75.0-131 (S) 4-Bromofluorobenzene 94.1 67.0-138 (S) 1,2-Dichloroethane-d4 94.5 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: Arcadis - Chevron - UT 30063821 04.81 L1767917 08/30/24 14:20 39 of 47 ACCOUNT:PROJECT:SDG:DATE/TIME:PAGE: Arcadis - Chevron - UT 30063821 04.81 L1767917 08/30/24 16:11 39 of 47 QUALITY CONTROL SUMMARYWG2347727 Volatile Organic Compounds (GC/MS) by Method 8260D L1767917-01,02 Method Blank (MB) (MB) R4110128-3 08/21/24 15:53 MB Result MB Qualifier MB MDL MB RDL Analyte mg/kg mg/kg mg/kg Benzene U 0.000467 0.00100 Toluene U 0.00130 0.00500 Ethylbenzene U 0.000737 0.00250 Total Xylenes U 0.000880 0.00650 Methyl tert-butyl ether U 0.000350 0.00100 Naphthalene U 0.00488 0.0125 (S) Toluene-d8 95.9 75.0-131 (S) 4-Bromofluorobenzene 96.8 67.0-138 (S) 1,2-Dichloroethane-d4 90.8 70.0-130 Laboratory Control Sample (LCS) • Laboratory Control Sample Duplicate (LCSD) (LCS) R4110128-1 08/21/24 14:14 • (LCSD) R4110128-2 08/21/24 14:34 Spike Amount LCS Result LCSD Result LCS Rec.LCSD Rec.Rec. Limits LCS Qualifier LCSD Qualifier RPD RPD Limits Analyte mg/kg mg/kg mg/kg %%%%% Benzene 0.125 0.134 0.120 107 96.0 70.0-123 11.0 20 Toluene 0.125 0.140 0.125 112 100 75.0-121 11.3 20 Ethylbenzene 0.125 0.135 0.129 108 103 74.0-126 4.55 20 Total Xylenes 0.375 0.423 0.380 113 101 72.0-127 10.7 20 Methyl tert-butyl ether 0.125 0.149 0.135 119 108 66.0-132 9.86 20 Naphthalene 0.125 0.114 0.114 91.2 91.2 59.0-130 0.000 20 (S) Toluene-d8 97.2 97.4 75.0-131 (S) 4-Bromofluorobenzene 94.6 98.8 67.0-138 (S) 1,2-Dichloroethane-d4 94.1 96.9 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: Arcadis - Chevron - UT 30063821 04.81 L1767917 08/30/24 14:20 40 of 47 ACCOUNT:PROJECT:SDG:DATE/TIME:PAGE: Arcadis - Chevron - UT 30063821 04.81 L1767917 08/30/24 16:11 40 of 47 QUALITY CONTROL SUMMARYWG2348926 Semi-Volatile Organic Compounds (GC) by Method 8015D L1767917-01,02,03,04,05,06,07,08,09,10,11,12,13 Method Blank (MB) (MB) R4111492-1 08/25/24 17:19 MB Result MB Qualifier MB MDL MB RDL Analyte mg/kg mg/kg mg/kg C10-C28 Diesel Range U 1.61 4.00 C28-C40 Oil Range U 0.274 4.00 (S) o-Terphenyl 74.8 18.0-148 Laboratory Control Sample (LCS) (LCS) R4111492-2 08/25/24 17:32 Spike Amount LCS Result LCS Rec.Rec. Limits LCS Qualifier Analyte mg/kg mg/kg %% C10-C28 Diesel Range 50.0 36.7 73.4 50.0-150 (S) o-Terphenyl 75.1 18.0-148 1 Cp 2 Tc 3 Ss 4 Cn 5 Sr 6 Qc 7 Gl 8 Al 9 Sc ACCOUNT:PROJECT:SDG:DATE/TIME:PAGE: Arcadis - Chevron - UT 30063821 04.81 L1767917 08/30/24 14:20 41 of 47 ACCOUNT:PROJECT:SDG:DATE/TIME:PAGE: Arcadis - Chevron - UT 30063821 04.81 L1767917 08/30/24 16:11 41 of 47 QUALITY CONTROL SUMMARYWG2349009 Semi-Volatile Organic Compounds (GC) by Method 8015D L1767917-14,15,16 Method Blank (MB) (MB) R4111203-1 08/24/24 15:56 MB Result MB Qualifier MB MDL MB RDL Analyte mg/kg mg/kg mg/kg C10-C28 Diesel Range U 1.61 4.00 C28-C40 Oil Range U 0.274 4.00 (S) o-Terphenyl 63.4 18.0-148 Laboratory Control Sample (LCS) (LCS) R4111203-2 08/24/24 16:10 Spike Amount LCS Result LCS Rec.Rec. Limits LCS Qualifier Analyte mg/kg mg/kg %% C10-C28 Diesel Range 50.0 32.2 64.4 50.0-150 (S) o-Terphenyl 64.9 18.0-148 L1767917-16 Original Sample (OS) • Matrix Spike (MS) • Matrix Spike Duplicate (MSD) (OS) L1767917-16 08/24/24 17:02 • (MS) R4111203-3 08/24/24 17:15 • (MSD) R4111203-4 08/24/24 17:28 Spike Amount (dry) Original Result (dry)MS Result (dry)MSD Result (dry)MS Rec.MSD Rec.Dilution Rec. Limits MS Qualifier MSD Qualifier RPD RPD Limits Analyte mg/kg mg/kg mg/kg mg/kg %%%%% C10-C28 Diesel Range 73.9 57.2 125 113 92.3 75.1 1 50.0-150 10.4 20 (S) o-Terphenyl 52.5 52.2 18.0-148 1 Cp 2 Tc 3 Ss 4 Cn 5 Sr 6 Qc 7 Gl 8 Al 9 Sc ACCOUNT:PROJECT:SDG:DATE/TIME:PAGE: Arcadis - Chevron - UT 30063821 04.81 L1767917 08/30/24 14:20 42 of 47 ACCOUNT:PROJECT:SDG:DATE/TIME:PAGE: Arcadis - Chevron - UT 30063821 04.81 L1767917 08/30/24 16:11 42 of 47 GLOSSARY OF TERMS Guide to Reading and Understanding Your Laboratory Report The information below is designed to better explain the various terms used in your report of analytical results from the Laboratory. This is not intended as a comprehensive explanation, and if you have additional questions please contact your project representative. Results Disclaimer - Information that may be provided by the customer, and contained within this report, include Permit Limits, Project Name, Sample ID, Sample Matrix, Sample Preservation, Field Blanks, Field Spikes, Field Duplicates, On-Site Data, Sampling Collection Dates/Times, and Sampling Location. Results relate to the accuracy of this information provided, and as the samples are received. Abbreviations and Definitions (dry)Results are reported based on the dry weight of the sample. [this will only be present on a dry report basis for soils]. MDL Method Detection Limit. MDL (dry)Method Detection Limit. RDL Reported Detection Limit. RDL (dry)Reported Detection Limit. Rec.Recovery. RPD Relative Percent Difference. SDG Sample Delivery Group. (S) Surrogate (Surrogate Standard) - Analytes added to every blank, sample, Laboratory Control Sample/Duplicate and Matrix Spike/Duplicate; used to evaluate analytical efficiency by measuring recovery. Surrogates are not expected to be detected in all environmental media. U Not detected at the Reporting Limit (or MDL where applicable). Analyte The name of the particular compound or analysis performed. Some Analyses and Methods will have multiple analytes reported. Dilution If the sample matrix contains an interfering material, the sample preparation volume or weight values differ from the standard, or if concentrations of analytes in the sample are higher than the highest limit of concentration that the laboratory can accurately report, the sample may be diluted for analysis. If a value different than 1 is used in this field, the result reported has already been corrected for this factor. Limits These are the target % recovery ranges or % difference value that the laboratory has historically determined as normal for the method and analyte being reported. Successful QC Sample analysis will target all analytes recovered or duplicated within these ranges. Original Sample The non-spiked sample in the prep batch used to determine the Relative Percent Difference (RPD) from a quality control sample. The Original Sample may not be included within the reported SDG. Qualifier This column provides a letter and/or number designation that corresponds to additional information concerning the result reported. If a Qualifier is present, a definition per Qualifier is provided within the Glossary and Definitions page and potentially a discussion of possible implications of the Qualifier in the Case Narrative if applicable. Result The actual analytical final result (corrected for any sample specific characteristics) reported for your sample. If there was no measurable result returned for a specific analyte, the result in this column may state “ND” (Not Detected) or “BDL” (Below Detectable Levels). The information in the results column should always be accompanied by either an MDL (Method Detection Limit) or RDL (Reporting Detection Limit) that defines the lowest value that the laboratory could detect or report for this analyte. Uncertainty (Radiochemistry)Confidence level of 2 sigma. Case Narrative (Cn) A brief discussion about the included sample results, including a discussion of any non-conformances to protocol observed either at sample receipt by the laboratory from the field or during the analytical process. If present, there will be a section in the Case Narrative to discuss the meaning of any data qualifiers used in the report. Quality Control Summary (Qc) This section of the report includes the results of the laboratory quality control analyses required by procedure or analytical methods to assist in evaluating the validity of the results reported for your samples. These analyses are not being performed on your samples typically, but on laboratory generated material. Sample Chain of Custody (Sc) This is the document created in the field when your samples were initially collected. This is used to verify the time and date of collection, the person collecting the samples, and the analyses that the laboratory is requested to perform. This chain of custody also documents all persons (excluding commercial shippers) that have had control or possession of the samples from the time of collection until delivery to the laboratory for analysis. Sample Results (Sr) This section of your report will provide the results of all testing performed on your samples. These results are provided by sample ID and are separated by the analyses performed on each sample. The header line of each analysis section for each sample will provide the name and method number for the analysis reported. Sample Summary (Ss)This section of the Analytical Report defines the specific analyses performed for each sample ID, including the dates and times of preparation and/or analysis. Qualifier Description C3 The reported concentration is an estimate. The continuing calibration standard associated with this data responded low. Method sensitivity check is acceptable. J The identification of the analyte is acceptable; the reported value is an estimate. J1 Surrogate recovery limits have been exceeded; values are outside upper control limits. J7 Surrogate recovery cannot be used for control limit evaluation due to dilution. P1 RPD value not applicable for sample concentrations less than 5 times the reporting limit. V The sample concentration is too high to evaluate accurate spike recoveries. 1 Cp 2 Tc 3 Ss 4 Cn 5 Sr 6 Qc 7 Gl 8 Al 9 Sc ACCOUNT:PROJECT:SDG:DATE/TIME:PAGE: Arcadis - Chevron - UT 30063821 04.81 L1767917 08/30/24 14:20 43 of 47 ACCOUNT:PROJECT:SDG:DATE/TIME:PAGE: Arcadis - Chevron - UT 30063821 04.81 L1767917 08/30/24 16:11 43 of 47 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: Arcadis - Chevron - UT 30063821 04.81 L1767917 08/30/24 14:20 44 of 47 ACCOUNT:PROJECT:SDG:DATE/TIME:PAGE: Arcadis - Chevron - UT 30063821 04.81 L1767917 08/30/24 16:11 44 of 47