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HomeMy WebLinkAboutDERR-2025-004162Rockwell Solutions, Inc., 718 E. Bridger Lane, Elk Ridge, UT 84651 801-361-2930 rockwellutah@yahoo.com 1 Rockwell Solutions, Inc. 718 E Bridger Lane Elk Ridge, UT 84651 (801) 361-2930 May 23, 2025 Jeff Manning 5612 South 3700 West Roy, Utah 84067 Re: Additional Subsurface Investigation Manning Short Stop (Facility Identification No. 0100520, Release Site OLD) 3878 W Highway 13, Corinne, Utah Dear Mr. Manning: Rockwell Solutions, Inc. has completed additional subsurface investigation activities at the above- referenced facility in accordance with State of Utah Division of Environmental Response and Remediation (DERR) guidelines. INTRODUCTION A Phase II Environmental Site Assessment was conducted at the above-referenced site in July 2024. Based on hydrocarbon concentrations that exceeded Tier 1 levels, a release was reported to DERR on July 29, 2024. A subsurface investigation in October 2024 defined soil and groundwater contamination in some areas, but additional investigation was requested by DERR to define the extent of offsite contamination. SITE DESCRIPTION The site is an operating gas station and convenience store located at 3878 W Highway 13 in Corinne, Utah. The facility has two 6,000-gallon and one 5,000-gallon above ground storage tank (ASTs) in a concrete-walled containment on the west end of the property. All three ASTs contain gasoline. Diesel fuel is not sold at the facility. There are two dispensers under the canopy west of the convenience store. A previous dispenser was located between the ASTs and the canopy. A site map is provided as Figure 1. METHODOLOGY On April 10, 2025, five borings were installed around the site using direct push methodology. Monitoring wells were installed in four of the borings. Access to install the borings was obtained from Corinne City and property owners. Direct Push Services was employed as the drilling contractor under the supervision of a Rockwell Solutions representative. Five-foot soil core samples were collected continuously from the direct push borings. A portion of the soil core was put in a zip-lock baggie to allow hydrocarbons to volatilize. The air in the zip lock baggie was then screened with a photoionization detector (PID). The sample with the highest PID reading or the soil interval above the apparent water table in each boring was submitted for laboratory analysis of MTBE, benzene, toluene, ethylbenzene, xylenes, naphthalene (MBTEXN) Additional Investigation, Manning Short Stop, Corinne, UT, Facility #0100520, Release OLD Rockwell Solutions, Inc., 718 E. Bridger Lane, Elk Ridge, UT 84651 801-361-2930 rockwellutah@yahoo.com 2 total petroleum hydrocarbons-gasoline range organics (TPH-GRO) using EPA Method 8260, and TPH-diesel range organics (TPH-DRO) using EPA Method 8015. TPH-DRO is actually not required as diesel has never been stored or sold at the site. Groundwater was detected at approximately ten feet below grade (bg). Borings extended to approximately seventeen feet deep in which monitoring wells were installed with ten feet of 0.010- inch screen. The wells contain a silica sand filter around the screen and a bentonite seal above the screen. A flush grade well protector was installed at the surface. The top-of-casing elevation at each well was measured to the nearest 0.01 foot using a transit level. Monitoring well construction diagrams are attached. The monitoring wells were developed and groundwater samples were collected. Groundwater samples were submitted for laboratory analysis of MBTEXN and TPH-GRO using EPA Method 8260 and TPH-DRO using EPA Method 8015. RESULTS Soil Type Soil type was evaluated during the subsurface investigation by field analysis of soil samples. The native soil at the site generally consists of silt or silty clay from the ground surface to approximately ten to twelve feet bg. Below the silty clay layer is a silty sand to a depth of at least seventeen feet. Boring logs are attached. Soil Analytical Results Table 1 lists the analytical results of soil samples collected at the site. No hydrocarbons exceeding ISLs were detected in soil samples collected in April 2025. Figure 2 shows the approximate extent of benzene in soil contamination based on historic data. The main area of contamination is around the dispensers. The laboratory analytical reports and chain-of-custody records for soil samples collected during the additional investigation are attached. PID readings are shown on the boring logs. Groundwater Analytical Results Table 2 lists the historic analytical results of the groundwater samples collected from the site monitoring wells. Dissolved benzene exceeded the Tier 1 level in monitoring wells MW-1, MW-3, MW-5, MW-6, MW-7, and MW-8. The extent of groundwater contamination is defined to Tier 1 levels. Benzene in MW-11, east of the site, exceeded the ISL. Figure 3 shows approximate groundwater contamination areas. The laboratory analytical reports and chain-of-custody records for groundwater samples collected during the additional investigation are attached. Groundwater Flow Direction Groundwater elevation measurements indicate groundwater flow is to the east-northeast. Figure 4 is a groundwater contour map. CONCLUSIONS AND RECOMMENDATIONS Soil and groundwater contamination exists at the site, centered around the area of the dispensers. The groundwater contaminant plume has extended below the convenience store building and offsite to the northeast and east. Groundwater samples will be collected at the site in approximately three months, after which a corrective action plan can be prepared to address the contamination. Additional Investigation, Manning Short Stop, Corinne, UT, Facility #0100520, Release OLD Rockwell Solutions, Inc., 718 E. Bridger Lane, Elk Ridge, UT 84651 801-361-2930 rockwellutah@yahoo.com 3 Please feel free to contact me should you have any questions or concerns at 801-361-2930. Sincerely, David S Hansen Rockwell Solutions, Inc. Certified UST Consultant CC130 cc: Eileen Brennan, DERR MW-2 MW-8 MW-5 MW-3 MW-4 MW-6 MW-1 MW-7 NORTH Approx. scale in feet 00 60 Manning Short Stop 3878 W Highway 13 Corinne UT Figure 1 Site Map Monitoring WellMW-2 3.95Benzene (mg/L) Tier 1 Level (0.3 mg/L)(estimated) ISL (0.005 mg/L) (estimated) MW-9 MW-12 MW-10 MW-11 Boring B-7 B-3 B-6 B-4 B-1 B-2 B-5 NORTH Approx. scale in feet 00 60 Manning Short Stop 3878 W Highway 13 Corinne UT MW-2 3.95Benzene (mg/L) Tier 1 Level (0.3 mg/L)(estimated) ISL (0.005 mg/L) (estimated) MW-12 <0.001 Figure 2 Benzene in Soil MW-8 <0.01 MW-5 0.21 MW-4 <0.01 MW-6 0.30 MW-7 <0.01 B-2 0.15 B-7 <0.12 B-3 <0.13 B-1 0.85 MW-3 <0.01 B-4 0.52 B-5 0.85 MW-2 0.006 MW-11 <0.005 MW-1 NS MW-10 <0.001 MW-9 <0.001 Boring LocationMonitoring WellMW-6 0.30 Benzene (mg/kg) Tier 1 Level (0.9 mg/kg)(estimated) ISL (0.3 mg/kg) (estimated) B-6 1.31 NORTH Approx. scale in feet 00 60 Manning Short Stop 3878 W Highway 13 Corinne UT MW-12 <0.002 Figure 3 Dissolved Benzene 5/10/2025 MW-8 0.645 MW-5 0.885 MW-4 <0.01 MW-6 13.2 MW-7 1.21 MW-3 1.24 MW-2 <0.001 MW-11 0.118 MW-10 <0.002 MW-9 <0.002 Monitoring WellMW-2 3.95 Benzene (mg/L) Tier 1 Level (0.3 mg/L)(estimated) ISL (0.005 mg/L) (estimated) MW-1 7.31 -0.005- -0.3- -5.0 - NORTH Approx. scale in feet 00 60 Manning Short Stop 3878 W Highway 13 Corinne UT MW-12 91.12 Figure 4 Groundwater Elevation Map 5/10/25 MW-8 88.69 MW-5 90.32 MW-4 89.44 MW-6 89.52 MW-7 89.90 MW-3 90.21 MW-2 90.00 MW-11 88.87 MW-9 90.09 MW-1 89.68 Monitoring WellMW-2 90.34 Groundwater Elevation MW-10 86.60 - 9 1 - - 9 0 - - 8 9 - - 8 8 - - 8 7 - Sample Date DTW (ft) Groundwater Elevation (ft) Benzene (mg/L) Toluene (mg/L) Ethyl- benzene (mg/L) Xylenes (mg/L) Naph- thalene (mg/L) MTBE (mg/L) TPH- GRO (mg/L) TPH-DRO (mg/L) 0.005 1 0.7 10 0.7 0.2 1 1 0.3 3 4 10 0.7 0.2 10 10 MW-1 10/16/2024 NM NM 4.57 0.013 1.38 0.162 0.186 <0.008 7.96 NA 99.59 11/13/2024 10.35 89.24 5/2/2025 9.91 89.68 7.31 0.232 2.5 0.522 0.284 <0.030 10.80 2.50 MW-2 10/16/2024 NM NM 3.95 0.013 0.158 0.126 0.132 <0.008 5.50 NA 100.13 11/13/2024 9.79 90.34 5/2/2025 10.13 90.00 <0.001 <0.002 <0.002 <0.008 <0.002 <0.002 <0.025 <1 MW-3 10/16/2024 NM NM 1.24 0.012 0.012 0.098 0.069 <0.008 2.13 NA 100.00 11/13/2024 9.70 90.30 5/2/2025 9.79 90.21 0.156 <0.002 0.01 <0.008 0.016 0.018 0.422 2.0 MW-4 10/16/2024 NM NM <0.005 <0.012 <0.012 <0.038 <0.012 <0.008 <0.125 NA 98.76 11/13/2024 9.95 88.81 5/2/2025 9.32 89.44 <0.001 <0.002 <0.002 <0.008 <0.002 <0.002 <0.025 <1 MW-5 10/16/2024 NM NM 0.29 <0.012 0.247 <0.038 0.066 <0.008 0.919 NA 100.05 11/13/2024 9.37 90.68 5/2/2025 9.73 90.32 0.885 <0.05 0.618 <0.150 0.087 <0.03 1.59 4.70 MW-6 10/16/2024 NM NM 4.14 0.012 0.397 0.073 0.226 <0.008 6.12 NA 99.69 11/13/2024 10.95 88.74 5/2/2025 10.17 89.52 13.2 <0.05 1.87 3.35 0.432 <0.03 19.40 3.60 RBCA Tier 1 Screening Levels Table 2 Groundwater Analytical Results Manning Short Stop 3878 W Highway 13, Corinne, Utah TOC (ft) Not sampled Not sampled Not sampled Not sampled Not sampled Not sampled Page 1 of 2 Sample Date DTW (ft) Groundwater Elevation (ft) Benzene (mg/L) Toluene (mg/L) Ethyl- benzene (mg/L) Xylenes (mg/L) Naph- thalene (mg/L) MTBE (mg/L) TPH- GRO (mg/L) TPH-DRO (mg/L) 0.005 1 0.7 10 0.7 0.2 1 1 0.3 3 4 10 0.7 0.2 10 10RBCA Tier 1 Screening Levels Table 2 Groundwater Analytical Results Manning Short Stop 3878 W Highway 13, Corinne, Utah TOC (ft) MW-7 10/16/2024 NM NM 1.21 <0.012 <0.012 0.08 0.088 <0.008 2.05 NA 99.59 11/13/2024 11.28 88.31 5/2/2025 9.69 89.90 2.06 <0.05 <0.05 <0.150 0.169 <0.03 2.23 1.70 MW-8 10/16/2024 NM NM 0.645 <0.012 <0.012 <0.038 0.014 0.008 1.51 NA 99.50 11/13/2024 11.22 88.28 5/2/2025 10.81 88.69 0.99 <0.005 0.01 <0.015 0.025 <0.003 1.13 1.30 MW-9 5/2/2025 9.42 90.09 <0.002 <0.005 <0.005 <0.015 <0.005 <0.003 <0.05 <1 99.51 MW-10 5/2/2025 11.53 86.60 <0.002 <0.005 <0.005 <0.015 <0.005 <0.003 <0.05 <1 98.13 MW-11 5/2/2025 10.50 88.87 0.118 <0.005 0.018 <0.015 0.008 <0.003 0.330 <1 99.37 MW-12 5/2/2025 8.39 91.12 <0.002 <0.005 <0.005 <0.015 <0.005 <0.003 <0.05 <1 99.51 MBTEXN and TPH-GRO analyzed by EPA Method 8260. Pink shading = Exceeds Initial Screening Level Yellow shading = exceeds Tier 1 Level Not sampled Not sampled Page 2 of 2 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 Rockwell Solutions, Inc Attn: Dave Hansen 718 East Bridger Lane Elk Ridge, UT 84651 Work Order: 25D1054 Project: Corinne Short Stop 4/21/2025 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 8 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 Rockwell Solutions, Inc Dave Hansen 718 East Bridger Lane Elk Ridge, UT 84651 PO#: Receipt: Date Reported: Project Name: 4/11/25 12:10 @ 3.8 °C 4/21/2025 Corinne Short Stop Sample ID: MW- 9, 9.5-10' Lab ID: 25D1054-01Matrix: Solid Flag(s)Units Analysis Date/Time Date Sampled: 4/10/25 10:20 Preparation Date/Time Sampled By: David Hansen Minimum Reporting Limit MethodResult Inorganic %4/14/254/14/250.1 CTF800076.7Total Solids MBTEXn mg/kg dry 4/17/254/17/250.001 EPA 8260D/5030BNDBenzene mg/kg dry 4/17/254/17/250.003 EPA 8260D/5030BNDEthylbenzene mg/kg dry 4/17/254/17/250.002 EPA 8260D/5030BNDMethyl-tert-butyl ether (MTBE) mg/kg dry 4/17/254/17/250.003 EPA 8260D/5030BNDNaphthalene mg/kg dry 4/17/254/17/250.003 EPA 8260D/5030BNDToluene mg/kg dry 4/17/254/17/250.01 EPA 8260D/5030BNDXylenes, total Gasoline Range mg/kg dry 4/17/254/17/250.0321 EPA 8260B/C 5035A/[CALC]NDGasoline Range Organics Diesel Range mg/kg dry 4/15/254/14/2565EPA 8015 CNDDiesel Range Organics Project Name: Corinne Short Stop CtF WO#: 25D1054 www.ChemtechFord.com Page 2 of 8Page 2 of 8 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 Rockwell Solutions, Inc Dave Hansen 718 East Bridger Lane Elk Ridge, UT 84651 PO#: Receipt: Date Reported: Project Name: 4/11/25 12:10 @ 3.8 °C 4/21/2025 Corinne Short Stop Sample ID: MW- 10, 9.5-10' Lab ID: 25D1054-02Matrix: Solid Flag(s)Units Analysis Date/Time Date Sampled: 4/10/25 12:30 Preparation Date/Time Sampled By: David Hansen Minimum Reporting Limit MethodResult Inorganic %4/14/254/14/250.1 CTF800075.1Total Solids MBTEXn mg/kg dry 4/17/254/17/250.001 EPA 8260D/5030BNDBenzene mg/kg dry 4/17/254/17/250.003 EPA 8260D/5030BNDEthylbenzene mg/kg dry 4/17/254/17/250.002 EPA 8260D/5030BNDMethyl-tert-butyl ether (MTBE) mg/kg dry 4/17/254/17/250.003 EPA 8260D/5030BNDNaphthalene mg/kg dry 4/17/254/17/250.003 EPA 8260D/5030BNDToluene mg/kg dry 4/17/254/17/250.01 EPA 8260D/5030BNDXylenes, total Gasoline Range mg/kg dry 4/17/254/17/250.0323 EPA 8260B/C 5035A/[CALC]NDGasoline Range Organics Diesel Range mg/kg dry 4/15/254/15/2567EPA 8015 CNDDiesel Range Organics Project Name: Corinne Short Stop CtF WO#: 25D1054 www.ChemtechFord.com Page 3 of 8Page 3 of 8 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 Rockwell Solutions, Inc Dave Hansen 718 East Bridger Lane Elk Ridge, UT 84651 PO#: Receipt: Date Reported: Project Name: 4/11/25 12:10 @ 3.8 °C 4/21/2025 Corinne Short Stop Sample ID: MW- 11, 12-13' Lab ID: 25D1054-03Matrix: Solid Flag(s)Units Analysis Date/Time Date Sampled: 4/10/25 14:15 Preparation Date/Time Sampled By: David Hansen Minimum Reporting Limit MethodResult Inorganic %4/14/254/14/250.1 CTF800076.4Total Solids MBTEXn mg/kg dry 4/17/254/17/250.005 EPA 8260D/5030BNDBenzene mg/kg dry 4/17/254/17/250.01 EPA 8260D/5030B0.04Ethylbenzene mg/kg dry 4/17/254/17/250.008 EPA 8260D/5030BNDMethyl-tert-butyl ether (MTBE) mg/kg dry 4/17/254/17/250.01 EPA 8260D/5030B0.04Naphthalene mg/kg dry 4/17/254/17/250.01 EPA 8260D/5030BNDToluene mg/kg dry 4/17/254/17/250.04 EPA 8260D/5030BNDXylenes, total Gasoline Range mg/kg dry 4/17/254/17/250.128 EPA 8260B/C 5035A/[CALC]62.8Gasoline Range Organics Diesel Range mg/kg dry 4/15/254/15/2565EPA 8015 CNDDiesel Range Organics Project Name: Corinne Short Stop CtF WO#: 25D1054 www.ChemtechFord.com Page 4 of 8Page 4 of 8 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 Rockwell Solutions, Inc Dave Hansen 718 East Bridger Lane Elk Ridge, UT 84651 PO#: Receipt: Date Reported: Project Name: 4/11/25 12:10 @ 3.8 °C 4/21/2025 Corinne Short Stop Sample ID: MW- 12, 9.5-10' Lab ID: 25D1054-04Matrix: Solid Flag(s)Units Analysis Date/Time Date Sampled: 4/10/25 16:00 Preparation Date/Time Sampled By: David Hansen Minimum Reporting Limit MethodResult Inorganic %4/14/254/14/250.1 CTF800077.7Total Solids MBTEXn mg/kg dry 4/17/254/17/250.001 EPA 8260D/5030BNDBenzene mg/kg dry 4/17/254/17/250.003 EPA 8260D/5030BNDEthylbenzene mg/kg dry 4/17/254/17/250.002 EPA 8260D/5030BNDMethyl-tert-butyl ether (MTBE) mg/kg dry 4/17/254/17/250.003 EPA 8260D/5030BNDNaphthalene mg/kg dry 4/17/254/17/250.003 EPA 8260D/5030BNDToluene mg/kg dry 4/17/254/17/250.01 EPA 8260D/5030BNDXylenes, total Gasoline Range mg/kg dry 4/17/254/17/250.0317 EPA 8260B/C 5035A/[CALC]NDGasoline Range Organics Diesel Range mg/kg dry 4/15/254/15/2564EPA 8015 CNDDiesel Range Organics Project Name: Corinne Short Stop CtF WO#: 25D1054 www.ChemtechFord.com Page 5 of 8Page 5 of 8 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 Rockwell Solutions, Inc Dave Hansen 718 East Bridger Lane Elk Ridge, UT 84651 PO#: Receipt: Date Reported: Project Name: 4/11/25 12:10 @ 3.8 °C 4/21/2025 Corinne Short Stop Sample ID: MW- 2, 10.5-11' Lab ID: 25D1054-05Matrix: Solid Flag(s)Units Analysis Date/Time Date Sampled: 4/10/25 19:45 Preparation Date/Time Sampled By: David Hansen Minimum Reporting Limit MethodResult Inorganic %4/14/254/14/250.1 CTF800080.5Total Solids MBTEXn mg/kg dry 4/17/254/17/250.001 EPA 8260D/5030B0.006Benzene mg/kg dry 4/17/254/17/250.003 EPA 8260D/5030B0.004Ethylbenzene mg/kg dry 4/17/254/17/250.002 EPA 8260D/5030BNDMethyl-tert-butyl ether (MTBE) mg/kg dry 4/17/254/17/250.003 EPA 8260D/5030BNDNaphthalene mg/kg dry 4/17/254/17/250.003 EPA 8260D/5030B0.004Toluene mg/kg dry 4/17/254/17/250.009 EPA 8260D/5030BNDXylenes, total Gasoline Range mg/kg dry 4/17/254/17/250.0312 EPA 8260B/C 5035A/[CALC]0.301Gasoline Range Organics Diesel Range mg/kg dry 4/15/254/15/2562EPA 8015 CNDDiesel Range Organics Project Name: Corinne Short Stop CtF WO#: 25D1054 www.ChemtechFord.com Page 6 of 8Page 6 of 8 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 Rockwell Solutions, Inc Dave Hansen 718 East Bridger Lane Elk Ridge, UT 84651 PO#: Receipt: Date Reported: Project Name: 4/11/25 12:10 @ 3.8 °C 4/21/2025 Corinne Short Stop 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. Project Name: Corinne Short Stop CtF WO#: 25D1054 www.ChemtechFord.com Page 7 of 8Page 7 of 8 Page 8 of 8 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 Rockwell Solutions, Inc Attn: Dave Hansen 718 East Bridger Lane Elk Ridge, UT 84651 Work Order: 25E0200 Project: Corinne Short Stop 5/12/2025 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 15 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 Rockwell Solutions, Inc Dave Hansen 718 East Bridger Lane Elk Ridge, UT 84651 PO#: Receipt: Date Reported: Project Name: 5/5/25 10:25 @ 3.4 °C 5/12/2025 Corinne Short Stop Sample ID: MW - 1 Lab ID: 25E0200-01Matrix: Water Flag(s)Units Analysis Date/Time Date Sampled: 5/2/25 12:30 Preparation Date/Time Sampled By: David Hansen Minimum Reporting Limit MethodResult MBTEXn mg/L 5/5/255/5/250.200 EPA 8260D/5030B7.31Benzene mg/L 5/5/255/5/250.050 EPA 8260D/5030B2.50Ethylbenzene mg/L 5/5/255/5/250.030 EPA 8260D/5030BNDMethyl-tert-butyl ether (MTBE) mg/L 5/5/255/5/250.050 EPA 8260D/5030B0.284Naphthalene mg/L 5/5/255/5/250.050 EPA 8260D/5030B0.232Toluene mg/L 5/5/255/5/250.150 EPA 8260D/5030B0.522Xylenes, total Gasoline Range mg/L 5/5/255/5/250.500 EPA 8260B/C /5030A/[CALC]10.8Gasoline Range Organics Diesel Range mg/L 5/7/255/7/251.0 EPA 8015 C2.5Diesel Range Organics Project Name: Corinne Short Stop CtF WO#: 25E0200 www.ChemtechFord.com Page 2 of 15Page 2 of 15 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 Rockwell Solutions, Inc Dave Hansen 718 East Bridger Lane Elk Ridge, UT 84651 PO#: Receipt: Date Reported: Project Name: 5/5/25 10:25 @ 3.4 °C 5/12/2025 Corinne Short Stop Sample ID: MW - 2 Lab ID: 25E0200-02Matrix: Water Flag(s)Units Analysis Date/Time Date Sampled: 5/2/25 12:10 Preparation Date/Time Sampled By: David Hansen Minimum Reporting Limit MethodResult MBTEXn mg/L 5/5/255/5/250.001 EPA 8260D/5030BNDBenzene mg/L 5/5/255/5/250.002 EPA 8260D/5030BNDEthylbenzene mg/L 5/5/255/5/250.002 EPA 8260D/5030BNDMethyl-tert-butyl ether (MTBE) mg/L 5/5/255/5/250.002 EPA 8260D/5030BNDNaphthalene mg/L 5/5/255/5/250.002 EPA 8260D/5030BNDToluene mg/L 5/5/255/5/250.008 EPA 8260D/5030BNDXylenes, total Gasoline Range mg/L 5/5/255/5/250.0250 EPA 8260B/C /5030A/[CALC]NDGasoline Range Organics Diesel Range mg/L 5/6/255/6/251.0 EPA 8015 CNDDiesel Range Organics Project Name: Corinne Short Stop CtF WO#: 25E0200 www.ChemtechFord.com Page 3 of 15Page 3 of 15 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 Rockwell Solutions, Inc Dave Hansen 718 East Bridger Lane Elk Ridge, UT 84651 PO#: Receipt: Date Reported: Project Name: 5/5/25 10:25 @ 3.4 °C 5/12/2025 Corinne Short Stop Sample ID: MW - 3 Lab ID: 25E0200-03Matrix: Water Flag(s)Units Analysis Date/Time Date Sampled: 5/2/25 10:45 Preparation Date/Time Sampled By: David Hansen Minimum Reporting Limit MethodResult MBTEXn mg/L 5/5/255/5/250.001 EPA 8260D/5030B0.156Benzene mg/L 5/5/255/5/250.002 EPA 8260D/5030B0.010Ethylbenzene mg/L 5/5/255/5/250.002 EPA 8260D/5030B0.018Methyl-tert-butyl ether (MTBE) mg/L 5/5/255/5/250.002 EPA 8260D/5030B0.016Naphthalene mg/L 5/5/255/5/250.002 EPA 8260D/5030BNDToluene mg/L 5/5/255/5/250.008 EPA 8260D/5030BNDXylenes, total Gasoline Range mg/L 5/5/255/5/250.0250 EPA 8260B/C /5030A/[CALC]0.422Gasoline Range Organics Diesel Range mg/L 5/7/255/7/251.0 EPA 8015 C2.0Diesel Range Organics Project Name: Corinne Short Stop CtF WO#: 25E0200 www.ChemtechFord.com Page 4 of 15Page 4 of 15 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 Rockwell Solutions, Inc Dave Hansen 718 East Bridger Lane Elk Ridge, UT 84651 PO#: Receipt: Date Reported: Project Name: 5/5/25 10:25 @ 3.4 °C 5/12/2025 Corinne Short Stop Sample ID: MW - 4 Lab ID: 25E0200-04Matrix: Water Flag(s)Units Analysis Date/Time Date Sampled: 5/2/25 9:15 Preparation Date/Time Sampled By: David Hansen Minimum Reporting Limit MethodResult MBTEXn mg/L 5/5/255/5/250.001 EPA 8260D/5030BNDBenzene mg/L 5/5/255/5/250.002 EPA 8260D/5030BNDEthylbenzene mg/L 5/5/255/5/250.002 EPA 8260D/5030BNDMethyl-tert-butyl ether (MTBE) mg/L 5/5/255/5/250.002 EPA 8260D/5030BNDNaphthalene mg/L 5/5/255/5/250.002 EPA 8260D/5030BNDToluene mg/L 5/5/255/5/250.008 EPA 8260D/5030BNDXylenes, total Gasoline Range mg/L 5/5/255/5/250.0250 EPA 8260B/C /5030A/[CALC]NDGasoline Range Organics Diesel Range mg/L ISTD-015/7/255/7/251.0 EPA 8015 CNDDiesel Range Organics Project Name: Corinne Short Stop CtF WO#: 25E0200 www.ChemtechFord.com Page 5 of 15Page 5 of 15 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 Rockwell Solutions, Inc Dave Hansen 718 East Bridger Lane Elk Ridge, UT 84651 PO#: Receipt: Date Reported: Project Name: 5/5/25 10:25 @ 3.4 °C 5/12/2025 Corinne Short Stop Sample ID: MW - 5 Lab ID: 25E0200-05Matrix: Water Flag(s)Units Analysis Date/Time Date Sampled: 5/2/25 10:25 Preparation Date/Time Sampled By: David Hansen Minimum Reporting Limit MethodResult MBTEXn mg/L 5/5/255/5/250.020 EPA 8260D/5030B0.885Benzene mg/L 5/5/255/5/250.050 EPA 8260D/5030B0.618Ethylbenzene mg/L 5/5/255/5/250.030 EPA 8260D/5030BNDMethyl-tert-butyl ether (MTBE) mg/L 5/5/255/5/250.050 EPA 8260D/5030B0.087Naphthalene mg/L 5/5/255/5/250.050 EPA 8260D/5030BNDToluene mg/L 5/5/255/5/250.150 EPA 8260D/5030BNDXylenes, total Gasoline Range mg/L 5/5/255/5/250.500 EPA 8260B/C /5030A/[CALC]1.59Gasoline Range Organics Diesel Range mg/L ISTD-015/7/255/7/251.0 EPA 8015 C4.7Diesel Range Organics Project Name: Corinne Short Stop CtF WO#: 25E0200 www.ChemtechFord.com Page 6 of 15Page 6 of 15 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 Rockwell Solutions, Inc Dave Hansen 718 East Bridger Lane Elk Ridge, UT 84651 PO#: Receipt: Date Reported: Project Name: 5/5/25 10:25 @ 3.4 °C 5/12/2025 Corinne Short Stop Sample ID: MW - 6 Lab ID: 25E0200-06Matrix: Water Flag(s)Units Analysis Date/Time Date Sampled: 5/2/25 11:50 Preparation Date/Time Sampled By: David Hansen Minimum Reporting Limit MethodResult MBTEXn mg/L 5/5/255/5/250.200 EPA 8260D/5030B13.2Benzene mg/L 5/5/255/5/250.050 EPA 8260D/5030B1.87Ethylbenzene mg/L 5/5/255/5/250.030 EPA 8260D/5030BNDMethyl-tert-butyl ether (MTBE) mg/L 5/5/255/5/250.050 EPA 8260D/5030B0.432Naphthalene mg/L 5/5/255/5/250.050 EPA 8260D/5030BNDToluene mg/L 5/5/255/5/250.150 EPA 8260D/5030B3.35Xylenes, total Gasoline Range mg/L 5/5/255/5/250.500 EPA 8260B/C /5030A/[CALC]19.4Gasoline Range Organics Diesel Range mg/L ISTD-015/7/255/7/251.0 EPA 8015 C3.6Diesel Range Organics Project Name: Corinne Short Stop CtF WO#: 25E0200 www.ChemtechFord.com Page 7 of 15Page 7 of 15 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 Rockwell Solutions, Inc Dave Hansen 718 East Bridger Lane Elk Ridge, UT 84651 PO#: Receipt: Date Reported: Project Name: 5/5/25 10:25 @ 3.4 °C 5/12/2025 Corinne Short Stop Sample ID: MW - 7 Lab ID: 25E0200-07Matrix: Water Flag(s)Units Analysis Date/Time Date Sampled: 5/2/25 11:30 Preparation Date/Time Sampled By: David Hansen Minimum Reporting Limit MethodResult MBTEXn mg/L 5/5/255/5/250.020 EPA 8260D/5030B2.06Benzene mg/L 5/5/255/5/250.050 EPA 8260D/5030BNDEthylbenzene mg/L 5/5/255/5/250.030 EPA 8260D/5030BNDMethyl-tert-butyl ether (MTBE) mg/L 5/5/255/5/250.050 EPA 8260D/5030B0.169Naphthalene mg/L 5/5/255/5/250.050 EPA 8260D/5030BNDToluene mg/L 5/5/255/5/250.150 EPA 8260D/5030BNDXylenes, total Gasoline Range mg/L 5/5/255/5/250.500 EPA 8260B/C /5030A/[CALC]2.23Gasoline Range Organics Diesel Range mg/L ISTD-015/7/255/7/251.0 EPA 8015 C1.7Diesel Range Organics Project Name: Corinne Short Stop CtF WO#: 25E0200 www.ChemtechFord.com Page 8 of 15Page 8 of 15 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 Rockwell Solutions, Inc Dave Hansen 718 East Bridger Lane Elk Ridge, UT 84651 PO#: Receipt: Date Reported: Project Name: 5/5/25 10:25 @ 3.4 °C 5/12/2025 Corinne Short Stop Sample ID: MW - 8 Lab ID: 25E0200-08Matrix: Water Flag(s)Units Analysis Date/Time Date Sampled: 5/2/25 11:10 Preparation Date/Time Sampled By: David Hansen Minimum Reporting Limit MethodResult MBTEXn mg/L 5/6/255/6/250.020 EPA 8260D/5030B0.990Benzene mg/L 5/6/255/6/250.005 EPA 8260D/5030B0.010Ethylbenzene mg/L 5/6/255/6/250.003 EPA 8260D/5030BNDMethyl-tert-butyl ether (MTBE) mg/L 5/6/255/6/250.005 EPA 8260D/5030B0.025Naphthalene mg/L 5/6/255/6/250.005 EPA 8260D/5030BNDToluene mg/L 5/6/255/6/250.015 EPA 8260D/5030BNDXylenes, total Gasoline Range mg/L 5/6/255/6/250.0500 EPA 8260B/C /5030A/[CALC]1.13Gasoline Range Organics Diesel Range mg/L 5/6/255/6/251.0 EPA 8015 C1.3Diesel Range Organics Project Name: Corinne Short Stop CtF WO#: 25E0200 www.ChemtechFord.com Page 9 of 15Page 9 of 15 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 Rockwell Solutions, Inc Dave Hansen 718 East Bridger Lane Elk Ridge, UT 84651 PO#: Receipt: Date Reported: Project Name: 5/5/25 10:25 @ 3.4 °C 5/12/2025 Corinne Short Stop Sample ID: MW - 9 Lab ID: 25E0200-09Matrix: Water Flag(s)Units Analysis Date/Time Date Sampled: 5/2/25 8:50 Preparation Date/Time Sampled By: David Hansen Minimum Reporting Limit MethodResult MBTEXn mg/L 5/6/255/6/250.002 EPA 8260D/5030BNDBenzene mg/L 5/6/255/6/250.005 EPA 8260D/5030BNDEthylbenzene mg/L 5/6/255/6/250.003 EPA 8260D/5030BNDMethyl-tert-butyl ether (MTBE) mg/L 5/6/255/6/250.005 EPA 8260D/5030BNDNaphthalene mg/L 5/6/255/6/250.005 EPA 8260D/5030BNDToluene mg/L 5/6/255/6/250.015 EPA 8260D/5030BNDXylenes, total Gasoline Range mg/L 5/6/255/6/250.0500 EPA 8260B/C /5030A/[CALC]NDGasoline Range Organics Diesel Range mg/L 5/6/255/6/251.0 EPA 8015 CNDDiesel Range Organics Project Name: Corinne Short Stop CtF WO#: 25E0200 www.ChemtechFord.com Page 10 of 15Page 10 of 15 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 Rockwell Solutions, Inc Dave Hansen 718 East Bridger Lane Elk Ridge, UT 84651 PO#: Receipt: Date Reported: Project Name: 5/5/25 10:25 @ 3.4 °C 5/12/2025 Corinne Short Stop Sample ID: MW - 10 Lab ID: 25E0200-10Matrix: Water Flag(s)Units Analysis Date/Time Date Sampled: 5/2/25 9:40 Preparation Date/Time Sampled By: David Hansen Minimum Reporting Limit MethodResult MBTEXn mg/L 5/6/255/6/250.002 EPA 8260D/5030BNDBenzene mg/L 5/6/255/6/250.005 EPA 8260D/5030BNDEthylbenzene mg/L 5/6/255/6/250.003 EPA 8260D/5030BNDMethyl-tert-butyl ether (MTBE) mg/L 5/6/255/6/250.005 EPA 8260D/5030BNDNaphthalene mg/L 5/6/255/6/250.005 EPA 8260D/5030BNDToluene mg/L 5/6/255/6/250.015 EPA 8260D/5030BNDXylenes, total Gasoline Range mg/L 5/6/255/6/250.0500 EPA 8260B/C /5030A/[CALC]NDGasoline Range Organics Diesel Range mg/L 5/6/255/6/251.0 EPA 8015 CNDDiesel Range Organics Project Name: Corinne Short Stop CtF WO#: 25E0200 www.ChemtechFord.com Page 11 of 15Page 11 of 15 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 Rockwell Solutions, Inc Dave Hansen 718 East Bridger Lane Elk Ridge, UT 84651 PO#: Receipt: Date Reported: Project Name: 5/5/25 10:25 @ 3.4 °C 5/12/2025 Corinne Short Stop Sample ID: MW - 11 Lab ID: 25E0200-11Matrix: Water Flag(s)Units Analysis Date/Time Date Sampled: 5/2/25 10:00 Preparation Date/Time Sampled By: David Hansen Minimum Reporting Limit MethodResult MBTEXn mg/L 5/6/255/6/250.002 EPA 8260D/5030B0.118Benzene mg/L 5/6/255/6/250.005 EPA 8260D/5030B0.018Ethylbenzene mg/L 5/6/255/6/250.003 EPA 8260D/5030BNDMethyl-tert-butyl ether (MTBE) mg/L 5/6/255/6/250.005 EPA 8260D/5030B0.008Naphthalene mg/L 5/6/255/6/250.005 EPA 8260D/5030BNDToluene mg/L 5/6/255/6/250.015 EPA 8260D/5030BNDXylenes, total Gasoline Range mg/L 5/6/255/6/250.0500 EPA 8260B/C /5030A/[CALC]0.330Gasoline Range Organics Diesel Range mg/L 5/7/255/7/251.0 EPA 8015 CNDDiesel Range Organics Project Name: Corinne Short Stop CtF WO#: 25E0200 www.ChemtechFord.com Page 12 of 15Page 12 of 15 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 Rockwell Solutions, Inc Dave Hansen 718 East Bridger Lane Elk Ridge, UT 84651 PO#: Receipt: Date Reported: Project Name: 5/5/25 10:25 @ 3.4 °C 5/12/2025 Corinne Short Stop Sample ID: MW - 12 Lab ID: 25E0200-12Matrix: Water Flag(s)Units Analysis Date/Time Date Sampled: 5/2/25 8:30 Preparation Date/Time Sampled By: David Hansen Minimum Reporting Limit MethodResult MBTEXn mg/L 5/6/255/6/250.002 EPA 8260D/5030BNDBenzene mg/L 5/6/255/6/250.005 EPA 8260D/5030BNDEthylbenzene mg/L 5/6/255/6/250.003 EPA 8260D/5030BNDMethyl-tert-butyl ether (MTBE) mg/L 5/6/255/6/250.005 EPA 8260D/5030BNDNaphthalene mg/L 5/6/255/6/250.005 EPA 8260D/5030BNDToluene mg/L 5/6/255/6/250.015 EPA 8260D/5030BNDXylenes, total Gasoline Range mg/L 5/6/255/6/250.0500 EPA 8260B/C /5030A/[CALC]NDGasoline Range Organics Diesel Range mg/L 5/6/255/6/251.0 EPA 8015 CNDDiesel Range Organics Project Name: Corinne Short Stop CtF WO#: 25E0200 www.ChemtechFord.com Page 13 of 15Page 13 of 15 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 Rockwell Solutions, Inc Dave Hansen 718 East Bridger Lane Elk Ridge, UT 84651 PO#: Receipt: Date Reported: Project Name: 5/5/25 10:25 @ 3.4 °C 5/12/2025 Corinne Short Stop 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 ISTD-01 = Re-analysis confirms failing internal standard due to matrix interference. Project Name: Corinne Short Stop CtF WO#: 25E0200 www.ChemtechFord.com Page 14 of 15Page 14 of 15 Page 15 of 15 BORING LOG DRILLING METHOD ____________________________________________ DRILLER / COMPANY ___________________________________________ TOTAL DEPTH ____________ WATER DEPTH _______ BORING DIAMETER _________ CASING DIAMETER _________ CASING MATERIAL ____________ SLOT SIZE __________ SURFACE ELEV. ____________ TOP OF CASING ELEV. ___________ LOGGED BY _____________________________________________ DE P T H ( F T .) SA M P L E S BLOWS ON SAMPLER SA M P L E IN T E R VAL (f e e t ) DESCRIPTION / SOIL CLASSIFICATION GRAPHIC LOG AND WELL CONSTRUCTION DE P T H 00 05 15 PID Direct Push JT, Direct Push Services 3” End of Boring at 17 feet. Set monitoring well NA 10’ David Hansen 17’ 0-5 10-15 00 05 10 MW-9 DATE: 4/10/25 LOCATION: PROJECT: 3878 W Highway 13 Corinne, Utah Gravelly Silt (GM), brown, damp Manning Short Stop Silt (ML), low plasticity, brown, damp WELL NO: Sand (SW), fine to medium-grained, medium brown, saturated 10 5-10 15 bentonite seal 10-20 silica sand .010" Screen road box 2”PVC 0.010” 0 15-17 99.51 0 0 0Silty Clay (CL), low plasticity, brown, wet BORING LOG DRILLING METHOD ____________________________________________ DRILLER / COMPANY ___________________________________________ TOTAL DEPTH ____________ WATER DEPTH _______ BORING DIAMETER _________ CASING DIAMETER _________ CASING MATERIAL ____________ SLOT SIZE __________ SURFACE ELEV. ____________ TOP OF CASING ELEV. ___________ LOGGED BY _____________________________________________ DE P T H ( F T .) SA M P L E S BLOWS ON SAMPLER SA M P L E IN T E R VAL (f e e t ) DESCRIPTION / SOIL CLASSIFICATION GRAPHIC LOG AND WELL CONSTRUCTION DE P T H 00 05 15 PID Direct Push JT, Direct Push Services 3” End of Boring at 17 feet. Set monitoring well NA 10’ David Hansen 17’ 0-5 10-15 00 05 10 MW-10 DATE: 4/10/25 LOCATION: PROJECT: 3878 W Highway 13 Corinne, Utah Gravelly Silt (GM), brown, damp Manning Short Stop WELL NO: Sand (SW), fine to medium-grained, medium brown, saturated 10 5-10 15 bentonite seal 10-20 silica sand .010" Screen road box 2”PVC 0.010” 0 15-17 98.13 0 0 0 Silty Clay (CL), low plasticity, brown, wet BORING LOG DRILLING METHOD ____________________________________________ DRILLER / COMPANY ___________________________________________ TOTAL DEPTH ____________ WATER DEPTH _______ BORING DIAMETER _________ CASING DIAMETER _________ CASING MATERIAL ____________ SLOT SIZE __________ SURFACE ELEV. ____________ TOP OF CASING ELEV. ___________ LOGGED BY _____________________________________________ DE P T H ( F T .) SA M P L E S BLOWS ON SAMPLER SA M P L E IN T E R VAL (f e e t ) DESCRIPTION / SOIL CLASSIFICATION GRAPHIC LOG AND WELL CONSTRUCTION DE P T H 00 05 15 PID Direct Push JT, Direct Push Services 3” End of Boring at 17 feet. Set monitoring well NA 10’ David Hansen 17’ 0-5 10-15 00 05 10 MW-11 DATE: 4/10/25 LOCATION: PROJECT: 3878 W Highway 13 Corinne, Utah Gravelly Silt (GM), brown, damp Manning Short Stop WELL NO: Sand (SW), fine to medium-grained, medium brown, saturated 10 5-10 15 bentonite seal 10-20 silica sand .010" Screen road box 2”PVC 0.010” 0 15-17 99.37 9 3 0 Silty Clay (CL), low plasticity, brown, wet 306 BORING LOG DRILLING METHOD ____________________________________________ DRILLER / COMPANY ___________________________________________ TOTAL DEPTH ____________ WATER DEPTH _______ BORING DIAMETER _________ CASING DIAMETER _________ CASING MATERIAL ____________ SLOT SIZE __________ SURFACE ELEV. ____________ TOP OF CASING ELEV. ___________ LOGGED BY _____________________________________________ DE P T H ( F T .) SA M P L E S BLOWS ON SAMPLER SA M P L E IN T E R VAL (f e e t ) DESCRIPTION / SOIL CLASSIFICATION GRAPHIC LOG AND WELL CONSTRUCTION DE P T H 00 05 15 PID Direct Push JT, Direct Push Services 3” End of Boring at 17 feet. Set monitoring well NA 10’ David Hansen 17’ 0-5 10-15 00 05 10 MW-12 DATE: 4/10/25 LOCATION: PROJECT: 3878 W Highway 13 Corinne, Utah sand and gravel fill Manning Short Stop WELL NO: Sand (SW), fine to medium-grained, medium brown, saturated 10 5-10 15 bentonite seal 10-20 silica sand .010" Screen road box 2”PVC 0.010” 0 15-17 99.51 0 0 0 Silty Clay (CL), low plasticity, brown, wet BORING LOG DRILLING METHOD ____________________________________________ DRILLER / COMPANY ___________________________________________ TOTAL DEPTH ____________ WATER DEPTH _______ BORING DIAMETER _________ CASING DIAMETER _________ CASING MATERIAL ____________ SLOT SIZE __________ SURFACE ELEV. ____________ TOP OF CASING ELEV. ___________ LOGGED BY _____________________________________________ DE P T H ( F T .) SA M P L E S BLOWS ON SAMPLER SA M P L E IN T E R VAL (f e e t ) DESCRIPTION / SOIL CLASSIFICATION GRAPHIC LOG AND WELL CONSTRUCTION DE P T H 00 05 15 PID Direct Push JT, Direct Push Services 3” End of Boring at 15 feet NA 10’ David Hansen 15’ 0-5 10-15 00 05 10 MW-2 (boring only) DATE: 4/10/25 LOCATION: PROJECT: 3878 W Highway 13 Corinne, Utah Gravelly Silt (GM), brown, damp Manning Short Stop WELL NO: Sand (SW), fine to medium-grained, medium brown, saturated 10 5-10 1516 19 29 Silty Clay (CL), low plasticity, brown, wet 29 asphalt sand and gravel fill