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Home My WebLink AboutDERR-2024-0126656952 South High Tech Dr. Ste. B Midvale, Utah 84047 P (801) 545-8500 Terracon.com Cover Letter December 3, 2024 Utah Department of Environmental Quality Division of Environmental Response and Remediation 195 North 1950 West PO Box 144840 Salt Lake City, Utah 84114-4840 Attn: Mr. Hong-Lei Tao P: 801.536.0036 E:htao@utah.gov RE: Work Plan NQA-07—Report Love’s Travel Stop, 1080 West Main Street, Green River, Utah Facility ID 5000016, Release Site No. NQA Terracon Project No. 61197459 Dear Mr. Tao: This report documents completion of sampling activities for Work Plan NQA-07 – Revision 1 (dated February 6, 2024) for the former Gas-N-Go Conoco, now operating as the Love’s Travel and Convenience Store (Love’s) facility in Green River, Utah. The objective of the Work Plan was to sample one section of the landfarmed soil stockpile located on the site. 1.0 Project Background Information A fuel release associated with the former diesel fueling system located on the west side of the facility was initially discovered in 2017 during closure of dispensers and lines for the former UST system operated by the previous owner. The soil samples reported concentrations of diesel-range petroleum hydrocarbons above the DERR Initial Screening Levels (ISLs) and Tier 1 Screening Levels (Tier 1) for soils. From November 2017 through January 2018, soils were excavated from under the canopy to a depth of 4 feet below the ground surface, and surrounding soils were excavated to various depths (ECI; Gas-N-Go #13; Report of Corrective Action; October 15, 2018). Approximately 2,900 cubic yards of petroleum-impacted excavated soils were stockpiled on visqueen on the northern portion of the site. The intent was to landfarm the impacted soils until concentrations of petroleum hydrocarbons were below DERR screening levels. In August 2021, under Work Plan NQA-04, Terracon collected four composite soil samples from the stockpiled material to evaluate the current condition. The results indicated that concentrations of diesel-range hydrocarbons exceeded the ISLs (Table 1). Work Plan NQA-07 | Love’s Travel Stop Facility ID 5000016, Release Site NQA December 3, 2024 | Terracon Project 61197459 2 Based on the report that elevated concentrations of petroleum hydrocarbon persisted in the stockpiled soils, Terracon developed Work Plan NQA-05. The intent of Work Plan NQA-05 was to aerate the stockpiled soils in an effort to enhance degradation of the remaining low level petroleum hydrocarbons by conducting two soil turning events. The first “Stockpiled Soil Aeration Event” was conducted on March 25, 2022. Terracon mobilized to the site to direct and observe the turning and aeration of the stockpile by licensed remediation contractor Spackman Enterprises. Terracon directed the excavation contractor to excavate down to the base of the soils above the visqueen liner, without damaging the liner. The Terracon field technician used a PID to evaluate soils as they were exposed and identify any “hotspots”. No soil sample collection was planned for this event as the intent was only to turn and aerate the soils. Terracon returned to the site on November 5, 2022 to conduct a second turning event. Terracon directed and observed the turning and aeration of the stockpile by licensed remediation contractor Spackman Enterprises. The Terracon field technician used a PID to evaluate soils as they were exposed and identify any “hotspots”. The stockpiled soils were allowed to sit overnight, and Terracon returned to the site to collect soil samples for laboratory analyses to evaluate the current conditions. Terracon collected six 5-point composite soil samples from the stockpiled soils to document the concentrations of remaining petroleum hydrocarbons. The results of the 2022 (NQA-05) event reported a TPH-DRO concentration of 504 milligrams per kilogram (mg/kg), exceeding the unrestricted land use Initial Screening Level (ISL) of 500 mg/kg in the northwest corner of the stockpile (Sample Zone 1). The stockpiled soil was sampled again on September 14, 2023 under Work Plan NQA-06. Terracon collected six composite samples from the stockpile for laboratory analysis. The sampling event reported a TPH-DRO concentration of 588 mg/kg in the northwest corner (Sample Zone 6; previous Sample Zone 1). The remaining five composite sampling areas have remained consistently below the applicable ISLs for all petroleum hydrocarbons. 2.0 Current Sampling Event – NQA-07 As only one section of the stockpiled soils exceeded an ISL for the 2022 and 2023 sampling events, Work Plan NQA-07 detailed that only the one section that has consistently exceeded the ISL for TPH-DRO would be sampled to confirm the current concentrations of TPH-DRO in the soil in that section. On November 6, 2024, Terracon returned to the site to sample the impacted section, SP-6. A total of four grab samples were collected from section SP-6. The attached Exhibit 1 depicts the composite sampling areas from the 2022, 2023, and current sampling events Work Plan NQA-07 | Love’s Travel Stop Facility ID 5000016, Release Site NQA December 3, 2024 | Terracon Project 61197459 3 with the overlapping composite sample area which has exceeded TPH-DRO screening levels shaded. Table 1 displays the historical and current stockpile sampling results. 2.1 Results Historic and current analytical results of soil samples collected from the stockpile are shown in Table 1. For the current event, one grab sample, SS-3, report a concentration of TPH- DRO at 897 mg/kg, exceeding the ISL of 500 mg/kg. The three other grab samples did not report an exceedance of the ISL for TPH-DRO. As part of Work Plan NQA-07, if any of the soil samples collected from the impacted area exceeded the ISL for TPH-DRO, the sample would be further analyzed using the TPH- Fractionation methodology. Table 2 displays the TPH-Fractionation data input into the DERR Risk-based Corrective Action (RBCA) Site-specific Clean-up Level (SSCL) calculator. Based on the input of the data into the SSCL calculator, three aliphatic hydrocarbon ranges exceed the Outdoor Air Vapor Inhalation screening level for subsurface soil. The concentrations did not exceed the Leaching to Groundwater screening level for subsurface soil or the Ingestion of soil, inhalation of vapors and particles, and dermal contact screening level for surface soil. The area where the stockpiled soils are stored is not in an occupied or frequently used area of the site. The one portion of the stockpile soil that continues to exceed the ISL for TPH- DRO does not appear to pose an immediate threat to human health or environment based on the TPH-Fractionation data. If you have any questions concerning this submittal, please contact Amy Austin at (801) 746-5464. Sincerely, Terracon Consultants, Inc. Amy Austin Andy King Utah UST Consultant CC0238 Utah UST Consultant CC0030 Authorized Project Reviewer Attachments: Table 1 Table 2 Exhibit 1 Laboratory Analytical Report ' P \ ' X V W L Q Sample Location Sampling Event TPH-GRO TPH-DRO Benzene Toluene Ethylbenzene Xylenes, total Naphthalene MTBE units Date Sampled mg/kg dry mg/kg dry mg/kg dry mg/kg dry mg/kg dry mg/kg dry mg/kg dry mg/kg dry Comp 1 8/10/2021 <0.250 105 <0.01 <0.02 <0.02 <0.02 <0.02 <0.01 Comp 2 8/10/2021 <0.250 215 <0.01 <0.02 <0.02 <0.02 <0.02 <0.01 Comp 3 8/10/2021 <0.250 854 <0.01 <0.02 <0.02 <0.02 <0.02 <0.01 Comp 4 8/10/2021 <0.250 997 <0.01 <0.02 <0.02 <0.02 <0.02 <0.01 11/5/2022 <0.212 504 <0.008 <0.02 <0.02 <0.02 <0.02 <0.008 9/14/2023 <0.243 <50 <0.01 <0.02 <0.02 <0.02 <0.02 0.07 11/5/2022 <0.250 379 <0.01 <0.02 <0.02 <0.02 <0.02 <0.01 9/14/2023 <0.250 156 <0.01 <0.02 <0.02 <0.02 <0.02 0.06 11/5/2022 <0.208 275 <0.008 <0.02 <0.02 <0.02 <0.02 <0.008 9/14/2023 <0.258 162 <0.01 <0.03 <0.03 <0.03 <0.03 0.09 11/5/2022 <0.208 206 <0.008 <0.02 <0.02 <0.02 <0.02 <0.008 9/14/2023 <0.212 359 <0.008 <0.02 <0.02 <0.02 <0.02 0.06 11/5/2022 <0.250 257 <0.01 <0.02 <0.02 <0.02 <0.02 <0.01 9/14/2023 <0.240 326 <0.01 <0.02 <0.02 <0.02 <0.02 0.07 11/5/2022 <0.208 81 <0.008 <0.02 <0.02 <0.02 <0.02 <0.008 9/14/2023 <0.200 588 <0.008 <0.02 <0.02 <0.02 <0.02 0.05 SP Cell #6 SS-1 11/6/2024 na 190 na na na na na na SP Cell #6 SS-2 11/6/2024 na 128 na na na na na na SP Cell #6 SS-3 11/6/2024 na 897 na na na na na na SP Cell #6 SS-4 11/6/2024 na 75 na na na na na na 150 500 0.2 9 5 142 51 0.3 1500 5000 0.9 25 23 142 51 0.3 ISL - Initial Screening Level. Tier 1 - Tier 1 Screening Level. na - not analyzed as detailed in Work Plan. UDEQ ISL UDEQ Tier 1 Comp. SP-5 Comp. SP-6 Table 1 - Summary of Stockpiled Soil Sample Results Love’s Travel Stop, 1080 West Main Street, Green River, Utah Facility ID 5000016, Release Site No. NQA Terracon Project No. 61197459 Comp. SP-1 Comp. SP-2 Comp. SP-3 Comp. SP-4 SSCL Calculator Prepared for:SSCL Calculator Prepared by: Site name: Site address: Facility ID: Release ID: Contact name: Contact phone: Contact e-mail: Site-Specific Cleanup Levels* for Commercial/ Industrial Receptors Air Groundwater Soil SSCLair SSCLwing SSCLwesp SSCLwamb SSCLs-leach SSCLsesp SSCLsamb SSCLss (See Eq. D.1)(See Eq. D.2)(See Eq. D.3)(See Eq. D.4)(See Eq. D.5)(See Eq. D.6)(See Eq. D.7)(See Eq. D.8) Air Groundwater Groundwater Groundwater Subsurface soil Subsurface soil Subsurface soil Surface Soil Inhalation Ingestion Indoor air (enclosed space) vapor inhalation Outdoor air (ambient) vapor inhalation Leaching to groundwater (groundwater ingestion) Indoor air (enclosed space) vapor inhalation Outdoor air (ambient) vapor inhalation Ingestion of soil, inhalation of vapors and particles, and dermal contact µg/m3 air µg/m3 air mg/L water mg/L water mg/L water mg/L water mg/kg soil mg/kg soil mg/kg soil mg/kg soil mg/kg soil Benzene (71-43-2)c 4.93E-01 9.87E-03 4.18E+00 4.24E+02 2.10E-02 Missing Parameter 9.09E-07 5.25E+00 Toluene (108-88-3)nc 7.31E+03 8.18E+00 6.10E+04 6.69E+06 3.54E+01 Missing Parameter 2.25E-02 5.37E+03 Ethylbenzene (100-41-4)nc 1.48E+03 1.02E+01 1.23E+04 1.44E+06 8.90E+01 Missing Parameter 7.02E-03 6.27E+03 Xylenes (1330-20-7)nc 1.48E+02 2.04E+01 1.32E+03 1.37E+05 1.92E+02 Missing Parameter 1.08E-03 4.96E+03 Naphthalene (91-20-3)nc 4.39E+00 2.04E+00 2.76E+02 1.57E+04 2.66E+01 Missing Parameter 6.42E-04 8.76E+02 MTBE (1634-04-04)nc 4.38E+03 5.11E-01 4.50E+04 2.35E+06 5.54E-01 Missing Parameter 3.85E-02 3.40E+02 Alkyl benzenes (C9-C10) [average values]nc 3.07E+02 4.09E+00 2.68E+03 3.10E+05 7.81E+01 Missing Parameter 2.72E-03 2.40E+03 Alkyl naphthalenes (C11-C13) [average values]nc 3.07E+02 4.09E+00 1.83E+04 1.05E+06 4.18E+02 Missing Parameter 2.66E-01 1.88E+04 <0.21 SP Cell #6 SS-3 Total PAHs (C12-C22) [average values]nc 1.53E+02 3.07E+00 1.34E+03 1.05E+05 2.77E+03 Missing Parameter 6.56E-02 1.34E+04 <0.21 SP Cell #6 SS-3 Aliphatics (C5-C6) [Hexane (110-54-3)]nc 3.07E+02 6.13E+00 1.41E+03 2.31E+05 1.22E+02 Missing Parameter 2.89E-05 3.26E+03 Aliphatics (C7-C8) [Heptane (142-82-5)]nc 3.07E+02 6.13E+00 1.70E+03 2.80E+05 3.98E+02 Missing Parameter 5.04E-05 3.26E+03 Aliphatics (C9-C10) [Nonane (111-84-2)]nc 1.48E+03 1.02E+01 9.60E+03 1.58E+06 5.04E+03 Missing Parameter 8.91E-04 6.27E+03 Aliphatics (C11-C12) [Undecane (1120-21-4)]nc 1.48E+03 1.02E+01 1.09E+04 1.79E+06 4.68E+04 Missing Parameter 8.27E-03 6.33E+03 0.79 SP Cell #6 SS-3 Aliphatics (C13-C16) [Hexadecane (544-76-3)]nc 1.48E+03 1.02E+01 1.26E+04 2.07E+06 7.35E+05 Missing Parameter 1.30E-01 6.69E+03 16 SP Cell #6 SS-3 Aliphatics (C17-C21) [Hexadecane (544-76-3)]nc 1.02E+04 2.04E+02 1.04E+05 1.71E+07 1.17E+09 Missing Parameter 1.04E+02 1.36E+05 23.3 SP Cell #6 SS-3 Aliphatics (C22-C35) [Heptadecane (629-78-7)]nc 1.02E+04 2.04E+02 1.04E+05 1.71E+07 1.17E+09 Missing Parameter 1.04E+02 1.36E+05 167 SP Cell #6 SS-3 Highest Air Concentrations Remaining at the Site Air Comments (e.g. Sample ID, Sample Date, etc.) Groundwater Comments (e.g. Sample ID, Sample Date, etc.)Chemical Name (CAS #) Pr i m a r y C h e m i c a l s o f C o n c e r n To t a l P e t r o l e u m H y d r o c a r b o n F r a c t i o n s Highest Groundwater Concentrations Remaining at the Site Soil Comments (e.g. Sample ID, Sample Depth, Sample Date, etc.) Highest Soil Concentrations Remaining at the Site UST Consultant Name: Company: Phone: E-mail: UST Consultant Cert. #: 405-302-6673 Chris.Weldon@loves.com Craig D. Eaton CC0167 Terracon Consultants, Inc. 801-746-5446 craig.eaton@terracon.com Date prepared:11/26/2024 Former Gas-N-Go Conoco #13 1080 West Main Street, Green River, Utah 5000016 NQA Chris Weldon, Environmental Manager Site-Specific Cleanup Levels* for Commercial/ Industrial Receptors Air Groundwater Soil SSCLair SSCLwing SSCLwesp SSCLwamb SSCLs-leach SSCLsesp SSCLsamb SSCLss (See Eq. D.1)(See Eq. D.2)(See Eq. D.3)(See Eq. D.4)(See Eq. D.5)(See Eq. D.6)(See Eq. D.7)(See Eq. D.8) Air Groundwater Groundwater Groundwater Subsurface soil Subsurface soil Subsurface soil Surface Soil Inhalation Ingestion Indoor air (enclosed space) vapor inhalation Outdoor air (ambient) vapor inhalation Leaching to groundwater (groundwater ingestion) Indoor air (enclosed space) vapor inhalation Outdoor air (ambient) vapor inhalation Ingestion of soil, inhalation of vapors and particles, and dermal contact µg/m3 air µg/m3 air mg/L water mg/L water mg/L water mg/L water mg/kg soil mg/kg soil mg/kg soil mg/kg soil mg/kg soil Highest Air Concentrations Remaining at the Site Air Comments (e.g. Sample ID, Sample Date, etc.) Groundwater Comments (e.g. Sample ID, Sample Date, etc.)Chemical Name (CAS #) Highest Groundwater Concentrations Remaining at the Site Soil Comments (e.g. Sample ID, Sample Depth, Sample Date, etc.) Highest Soil Concentrations Remaining at the Site Acenaphthylene (208-96-8)nc 1.53E+02 3.07E+00 1.97E+04 1.03E+06 1.25E+02 Missing Parameter 3.59E-01 1.33E+04 <0.43 SP Cell #6 SS-3 Acenaphthene (83-32-9)nc 8.69E+01 6.13E+00 1.03E+04 5.39E+05 2.15E+02 Missing Parameter 1.21E-01 1.82E+04 <0.43 SP Cell #6 SS-3 Fluorene (86-73-7)nc 5.62E+01 4.09E+00 7.28E+03 3.78E+05 2.33E+02 Missing Parameter 1.96E-01 1.35E+04 <0.43 SP Cell #6 SS-3 Phenanthrene (85-01-8)nc 1.53E+02 3.07E+00 2.30E+04 1.18E+06 3.61E+02 Missing Parameter 2.69E+00 1.43E+04 <0.43 SP Cell #6 SS-3 Anthracene (120-12-7)nc 4.38E+02 3.07E+01 6.27E+04 3.24E+06 3.42E+03 Missing Parameter 5.94E+00 1.15E+05 <0.43 SP Cell #6 SS-3 Fluoranthene (206-44-0)nc 5.83E+01 4.09E+00 1.07E+04 5.51E+05 1.64E+03 Missing Parameter 1.09E+01 1.79E+04 <0.43 SP Cell #6 SS-3 Pyrene (129-00-0)nc 4.38E+01 3.07E+00 7.12E+03 3.66E+05 1.14E+03 Missing Parameter 8.51E+00 1.32E+04 <0.43 SP Cell #6 SS-3 Benz(a)Anthracene (56-55-3)c 1.96E-01 3.92E-04 2.57E+01 1.32E+03 5.75E-01 Missing Parameter 2.39E-01 2.00E+00 <0.43 SP Cell #6 SS-3 Chrysene (218-01-09)c 1.96E+00 3.92E-02 3.74E+02 1.92E+04 4.59E+01 Missing Parameter 2.48E+00 1.96E+02 <0.43 SP Cell #6 SS-3 Benzo(b)Fluoranthene (205-99-2) c 1.96E-02 3.92E-04 4.05E+00 2.09E+02 4.68E-01 Missing Parameter 5.45E-03 1.96E+00 <0.43 SP Cell #6 SS-3 Benzo(k)-Fluoranthene (207-08-09) c 1.96E-01 3.92E-03 4.22E+01 2.16E+03 6.82E+00 Missing Parameter 1.03E+01 1.97E+01 <0.43 SP Cell #6 SS-3 Benzo(a)-Pyrene (50-32-8)c 2.35E-03 3.92E-05 3.12E-01 1.60E+01 7.38E-02 Missing Parameter 4.63E-02 1.97E-01 <0.43 SP Cell #6 SS-3 Indeno(1, 2, 3-Cd)Pyrene (193-39- 5)c 2.35E-02 3.92E-04 1.14E+03 1.46E+03 4.54E-02 Missing Parameter 2.56E+04 1.89E+00 <0.43 SP Cell #6 SS-3 Dibenzo-(a, h)Anthracene (53-70- 3)c 2.35E-02 3.92E-04 5.35E+00 2.75E+02 4.17E+00 Missing Parameter 3.08E+00 2.00E+00 Benzo (g, h, i)-Perylene (191-24-2) nc 1.53E+02 3.07E+00 3.29E+04 1.69E+06 1.37E+04 Missing Parameter 4.41E+03 1.55E+04 <0.43 SP Cell #6 SS-3 Not used c Not used Not used Not used Not used Not used Not used Not used Not used Not used c Not used Not used Not used Not used Not used Not used Not used Not used Not used c Not used Not used Not used Not used Not used Not used Not used Not used Not used c Not used Not used Not used Not used Not used Not used Not used Not used Not used c Not used Not used Not used Not used Not used Not used Not used Not used Not used c Not used Not used Not used Not used Not used Not used Not used Not usedAd d i t i o n a l C h e m i c a l s o f C o n c e r n (c a r c i n o g e n t s ) In d i v i d u a l P o l y n u c l e a r A r o m a t i c H y d r o c a r b o n s ( P A H s ) Site-Specific Cleanup Levels* for Commercial/ Industrial Receptors Air Groundwater Soil SSCLair SSCLwing SSCLwesp SSCLwamb SSCLs-leach SSCLsesp SSCLsamb SSCLss (See Eq. D.1)(See Eq. D.2)(See Eq. D.3)(See Eq. D.4)(See Eq. D.5)(See Eq. D.6)(See Eq. D.7)(See Eq. D.8) Air Groundwater Groundwater Groundwater Subsurface soil Subsurface soil Subsurface soil Surface Soil Inhalation Ingestion Indoor air (enclosed space) vapor inhalation Outdoor air (ambient) vapor inhalation Leaching to groundwater (groundwater ingestion) Indoor air (enclosed space) vapor inhalation Outdoor air (ambient) vapor inhalation Ingestion of soil, inhalation of vapors and particles, and dermal contact µg/m3 air µg/m3 air mg/L water mg/L water mg/L water mg/L water mg/kg soil mg/kg soil mg/kg soil mg/kg soil mg/kg soil Highest Air Concentrations Remaining at the Site Air Comments (e.g. Sample ID, Sample Date, etc.) Groundwater Comments (e.g. Sample ID, Sample Date, etc.)Chemical Name (CAS #) Highest Groundwater Concentrations Remaining at the Site Soil Comments (e.g. Sample ID, Sample Depth, Sample Date, etc.) Highest Soil Concentrations Remaining at the Site Not used nc Not used Not used Not used Not used Not used Not used Not used Not used Not used nc Not used Not used Not used Not used Not used Not used Not used Not used Not used nc Not used Not used Not used Not used Not used Not used Not used Not used Not used nc Not used Not used Not used Not used Not used Not used Not used Not used Not used nc Not used Not used Not used Not used Not used Not used Not used Not used Not used nc Not used Not used Not used Not used Not used Not used Not used Not used * - Site-Specific Cleanup Levels assume a Natural Attenuation Factor of 1 (i.e. no natural attenuation). c - carcinogen; nc - non-carcinogen Site-specific Parameters used in Calculations Parameter Comments Soil Receptor i Lgw Ls Pavement Precip. Soil Zone W Ad d i t i o n a l C h e m i c a l s o f C o n c e r n (n o n - c a r c i n o g e n t s ) Width of contaminated source area parallel to groundwater flow or wind direction Annual precipitation Is contamination present in the saturated zone? Is contamination beneath pavement or bare soils? Depth to contaminated soil Depth to groundwater Hydraulic gradient Select the most sensitive Receptor that is present at the site Soil type representative of site Description 7.11 No 130 Value Silt Commercial/ Industrial 0.026 25 0 UNPAVED: contamination beneath bare soils Corrective Action Plan - Work Plan and Budget NQA-02, dated July 17, 2018 Impacted soil is at the surface in landfarm cells Google Earth Pro measurement of landfarm cell from northeast to southeast Corrective Action Plan - Work Plan and Budget NQA-02, dated July 17, 2018 Gas station and convenience store Delta Env, Ground Water Table Elevation Map 5/16/00 for south-adjoining Chevron Impacted soil is at the surface in landfarm cells Impacted soil is at the surface in landfarm cells Corrective Action Plan - Work Plan and Budget NQA-02, dated July 17, 2018 inches/year Not applicable ft Units Not applicable Not applicable ft-vertical/ft-lateral ft Not applicable ft The analyses presented on this report were performed in accordance with the National Environmental Laboratory Accreditation Program (NELAP) unless noted in the comments, flags, or case narrative. If the report is to be used for regulatory compliance, it should be presented in its entirety, and not be altered. Client Service Contact: 801.262.7299 Terracon IHI Attn: Amy Austin 6949 South High Tech Drive Midvale, UT 84047 Work Order: 24K0442 Project: Loves Travel Stop Green River, UT Project #61197459 11/19/2024 Approved By: Mark Broadhead, Project Manager 9632 South 500 West Sandy, Utah 84070 Serving the Intermountain West since 1953 801.262.7299 Main 866.792.0093 Fax www.ChemtechFord.com Page 1 of 7 xx Chemtech-Ford Laboratories Serving the Intermountain West Since 1953 Certificate of Analysis 9632 South 500 West Sandy, UT 84070 O:(801) 262-7299 F: (866) 792-0093 www.ChemtechFord.com Terracon IHI Amy Austin 6949 South High Tech Drive Midvale, UT 84047 PO#: Receipt: Date Reported: Project Name: 61197459 11/6/24 16:46 @ 0.9 °C 11/19/2024 Loves Travel Stop Green River, UT Project #61197459 Sample ID: SP Cell #6 SS-1 Lab ID: 24K0442-01Matrix: Solid Flag(s)Units Analysis Date/Time Date Sampled: 11/6/24 12:02 Preparation Date/Time Sampled By: Mark Lilly Minimum Reporting Limit MethodResult Inorganic %11/13/2411/13/240.1 CTF800091.8Total Solids Diesel Range mg/kg dry 11/8/2411/8/2454EPA 8015 C190Diesel Range Organics Project Name: Loves Travel Stop Green River, UT Project #61197 CtF WO#: 24K0442 www.ChemtechFord.com Page 2 of 7Page 2 of 7 xx Chemtech-Ford Laboratories Serving the Intermountain West Since 1953 Certificate of Analysis 9632 South 500 West Sandy, UT 84070 O:(801) 262-7299 F: (866) 792-0093 www.ChemtechFord.com Terracon IHI Amy Austin 6949 South High Tech Drive Midvale, UT 84047 PO#: Receipt: Date Reported: Project Name: 61197459 11/6/24 16:46 @ 0.9 °C 11/19/2024 Loves Travel Stop Green River, UT Project #61197459 Sample ID: SP Cell #6 SS-2 Lab ID: 24K0442-02Matrix: Solid Flag(s)Units Analysis Date/Time Date Sampled: 11/6/24 12:19 Preparation Date/Time Sampled By: Mark Lilly Minimum Reporting Limit MethodResult Inorganic %11/13/2411/13/240.1 CTF800093.2Total Solids Diesel Range mg/kg dry 11/8/2411/8/2454EPA 8015 C128Diesel Range Organics Project Name: Loves Travel Stop Green River, UT Project #61197 CtF WO#: 24K0442 www.ChemtechFord.com Page 3 of 7Page 3 of 7 xx Chemtech-Ford Laboratories Serving the Intermountain West Since 1953 Certificate of Analysis 9632 South 500 West Sandy, UT 84070 O:(801) 262-7299 F: (866) 792-0093 www.ChemtechFord.com Terracon IHI Amy Austin 6949 South High Tech Drive Midvale, UT 84047 PO#: Receipt: Date Reported: Project Name: 61197459 11/6/24 16:46 @ 0.9 °C 11/19/2024 Loves Travel Stop Green River, UT Project #61197459 Sample ID: SP Cell #6 SS-3 Lab ID: 24K0442-03Matrix: Solid Flag(s)Units Analysis Date/Time Date Sampled: 11/6/24 12:37 Preparation Date/Time Sampled By: Mark Lilly Minimum Reporting Limit MethodResult Inorganic %11/13/2411/13/240.1 CTF800094.0Total Solids Diesel Range mg/kg dry 11/8/2411/8/2453EPA 8015 C897Diesel Range Organics Semi-Volatile Compounds mg/kg dry 11/15/2411/15/240.21 EPA 8270E/35700.79C11-12 Aliphatic hydrocarbons mg/kg dry 11/15/2411/15/240.21 EPA 8270E/357016.0C13-C16 Aliphatic hydrocarbons mg/kg dry 11/15/2411/15/240.21 EPA 8270E/357023.3C17-C21 Aliphatic hydrocarbons mg/kg dry 11/15/2411/15/240.21 EPA 8270E/3570167C22-C35 Aliphatic hydrocarbons mg/kg dry 11/15/2411/15/240.21 EPA 8270E/3570NDC11-C13 Alkyl Naphthalenes mg/kg dry 11/15/2411/15/240.21 EPA 8270E/3570NDTotal C12-C22 PAH mg/kg dry 11/15/2411/15/240.43 EPA 8270E/3570NDAcenaphthene mg/kg dry 11/15/2411/15/240.43 EPA 8270E/3570NDAcenaphthylene mg/kg dry 11/15/2411/15/240.43 EPA 8270E/3570NDAnthracene mg/kg dry 11/15/2411/15/240.43 EPA 8270E/3570NDBenzo (a) anthracene mg/kg dry 11/15/2411/15/240.43 EPA 8270E/3570NDBenzo (a) pyrene mg/kg dry 11/15/2411/15/240.43 EPA 8270E/3570NDBenzo (b) fluoranthene mg/kg dry 11/15/2411/15/240.43 EPA 8270E/3570NDBenzo (g,h,i) perylene mg/kg dry 11/15/2411/15/240.43 EPA 8270E/3570NDBenzo (k) fluoranthene mg/kg dry 11/15/2411/15/240.43 EPA 8270E/3570NDChrysene mg/kg dry 11/15/2411/15/240.43 EPA 8270E/3570NDFluoranthene mg/kg dry 11/15/2411/15/240.43 EPA 8270E/3570NDFluorene mg/kg dry 11/15/2411/15/240.43 EPA 8270E/3570NDIndeno (1,2,3-cd) pyrene mg/kg dry 11/15/2411/15/240.43 EPA 8270E/3570NDPhenanthrene mg/kg dry 11/15/2411/15/240.43 EPA 8270E/3570NDPyrene Project Name: Loves Travel Stop Green River, UT Project #61197 CtF WO#: 24K0442 www.ChemtechFord.com Page 4 of 7Page 4 of 7 xx Chemtech-Ford Laboratories Serving the Intermountain West Since 1953 Certificate of Analysis 9632 South 500 West Sandy, UT 84070 O:(801) 262-7299 F: (866) 792-0093 www.ChemtechFord.com Terracon IHI Amy Austin 6949 South High Tech Drive Midvale, UT 84047 PO#: Receipt: Date Reported: Project Name: 61197459 11/6/24 16:46 @ 0.9 °C 11/19/2024 Loves Travel Stop Green River, UT Project #61197459 Sample ID: SP Cell #6 SS-4 Lab ID: 24K0442-04Matrix: Solid Flag(s)Units Analysis Date/Time Date Sampled: 11/6/24 12:48 Preparation Date/Time Sampled By: Mark Lilly Minimum Reporting Limit MethodResult Inorganic %11/13/2411/13/240.1 CTF800090.0Total Solids Diesel Range mg/kg dry 11/9/2411/8/2456EPA 8015 C75Diesel Range Organics Project Name: Loves Travel Stop Green River, UT Project #61197 CtF WO#: 24K0442 www.ChemtechFord.com Page 5 of 7Page 5 of 7 xx Chemtech-Ford Laboratories Serving the Intermountain West Since 1953 Certificate of Analysis 9632 South 500 West Sandy, UT 84070 O:(801) 262-7299 F: (866) 792-0093 www.ChemtechFord.com Terracon IHI Amy Austin 6949 South High Tech Drive Midvale, UT 84047 PO#: Receipt: Date Reported: Project Name: 61197459 11/6/24 16:46 @ 0.9 °C 11/19/2024 Loves Travel Stop Green River, UT Project #61197459 Report Footnotes Abbreviations ND = Not detected at the corresponding Minimum Reporting Limit (MRL). 1 mg/L = one milligram per liter or 1 mg/kg = one milligram per kilogram = 1 part per million. 1 ug/L = one microgram per liter or 1 ug/kg = one microgram per kilogram = 1 part per billion. 1 ng/L = one nanogram per liter or 1 ng/kg = one nanogram per kilogram = 1 part per trillion. On calculated parameters, there may be a slight difference between summing the rounded values shown on the report vs the unrounded values used in the calculation. Flag Descriptions S-04 = The surrogate recovery for this sample is outside of established control limits due to a sample matrix effect . Project Name: Loves Travel Stop Green River, UT Project #61197 CtF WO#: 24K0442 www.ChemtechFord.com Page 6 of 7Page 6 of 7 Page 7 of 7