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Home My WebLink AboutDERR-2024-009171 SOIL AND GROUNDWATER SAMPLING REPORT Utah Department of Transportation Maintenance Station No. 332 362 West 100 North, Hanksville, Utah Facility Identification No. 2000208, Release Site FOP March 2024 March 28, 2024 Mr. Bret Gurney Utah Department of Government Operations Division of Fleet Operations – Fuel Manager P.O Box 14117 Salt Lake City, UT 84114 Ms, Eileen Brennan Utah Department of Environmental Quality Division of Environmental Response and Remediation 195 North 1950 West Salt Lake City, UT 84114 Re: Soil and Groundwater Report UDOT Maintenance Station No. 332 362 West 100 North, Hanksville, Utah Facility Identification No. 2000208, Release FOP Dear Mr. Gurney and Ms. Brennan: WSP USA Environment & Infrastructure Inc. (WSP) is pleased to submit this soil and groundwater sampling report for the Utah Department of Transportation (UDOT) Station No. 332, located at 362 West 100 North, Hanksville, Utah (Site). The Site has Facility ID No. 2000208, Release Site FOP. The sampling was requested by the Utah Division of Environmental Response and Remediation in a letter dated September 25, 2023 (DERR document No. ERRL-0333-23). This report documents the findings of the sampling conducted at the Site on February 13-15 and March 6-7, 2024. Please contact Ehud Ardon at ehud.ardon@wsp.com if you have any questions or comments regarding this report. Sincerely, WSP USA Environment & Infrastructure Inc. Corey Buchanan, P.G Ehud Ardon Project Manager Senior Environmental Scientist Certified UST Consultant # CC-275 Certified UST Consultant # CC-279 SOIL AND GROUNDWATER SAMPLING REPORT Utah Department of Transportation Maintenance Station No. 332 362 West 100 North, Hanksville, Utah Facility Identification No. 2000208, Release Site FOP Prepared for: Utah Department of Government Operations State Fuel Network 447 West 13800 South Draper, Utah 84070 And Utah Department of Environmental Quality Division of Environmental Response and Remediation 195 North 1950 West Salt Lake City, Utah 84116 Prepared by: WSP USA Environment & Infrastructure Inc. 10876 S. River Front Parkway Suite 250 South Jordan, Utah 84095 WSP Project No. 2381400522 March, 2024 Submitted by Reviewed By Corey Buchanan, PG Ehud Ardon Project Manager Senior Environmental Scientist Certified UST Consultant CC-275 Certified UST Consultant CC-279 Utah Department of Transportation Maintenance Station No. 332 Project No. 2381400522 Soil and Groundwater Sampling Report TABLE OF CONTENTS Page EXECUTIVE SUMMARY ....................................................................................................................................................................... 3 1.0 INTRODUCTION ................................................................................................................................................................... 4 1.1 SITE BACKGROUND ......................................................................................................................................................... 4 2.0 SITE ASSESSMENT ACTIVITIES ........................................................................................................................................ 5 2.1 SHALLOW SOIL BORINGS AND SOIL SAMPLING ........................................................................................................... 5 2.2 MONITORING WELLS INSTALLATION AND DEVELOPMENT .......................................................................................... 5 2.3 GROUNDWATER SAMPLING ........................................................................................................................................... 6 2.4 SAMPLES HANDLING AND ANALYSIS............................................................................................................................ 6 2.5 INVESTIGATION DERIVED WASTE ................................................................................................................................. 6 2.6 MONITORING WELL ELEVATIONS SURVEY .................................................................................................................... 6 3.0 ENVIRONMENTAL SETTING............................................................................................................................................. 6 3.1 SITE SOIL TYPE ............................................................................................................................................................... 7 3.2 GROUNDWATER DEPTH AND FLOW DIRECTION ........................................................................................................ 7 4.0 ANALYTICAL RESULTS ........................................................................................................................................................ 7 4.1 SOIL SAMPLING RESULTS ............................................................................................................................................... 7 4.2 GROUNDWATER SAMPLING RESULTS .......................................................................................................................... 7 4.3 QUALITY ASSURANCE/QUALITY CONTROL ................................................................................................................... 7 5.0 CONCLUSIONS AND RECOMMENDATIONS ............................................................................................................ 8 LIST OF FIGURES Figure 1 Site Location Map Figure 2 Site Layout Map Figure 3 Potentiometric Surface Map LIST OF TABLES Table 1 Well Gauging Data Table 2 Groundwater Analytical Results Table 3 Soil Analytical Results LIST OF APPENDICES Appendix A Historical Data Appendix B Soil Boring Logs Appendix C Field Data Sheets Appendix D Laboratory Analytical Reports Utah Department of Transportation Maintenance Station No. 332 Project No. 2381400522 Soil and Groundwater Sampling Report ACRONYMS Units of Measurement mg/kg milligrams per kilogram mg/L milligrams per liter ppm parts per million Bgs Below Ground Surface DERR Division of Environmental Response and Remediation DRO Diesel Range Organics EPA Environmental Protection Agency ISL Initial Screening Level PID Photoionization Detector QA/QC Quality Assurance/Quality Control TPH Total Petroleum Hydrocarbons UDEQ Utah Department of Environmental Quality UST Underground Storage Tank VOC Volatile Organic Compound Utah Department of Transportation Maintenance Station No. 332 Project No. 2381400522 Soil and Groundwater Sampling Report EXECUTIVE SUMMARY WSP USA Environment & Infrastructure Inc. (WSP) prepared this Soil and Groundwater Sampling Report (Report) for the Utah Department of Transportation (UDOT) Hanksville Maintenance Station No. 332 (Site). The Report was prepared for the Utah State Fuel Network (SFN) and for the Utah Division of Environmental Response and Remediation (DERR) and details the results of the soil and groundwater sampling activities performed by WSP in February-March, 2024. In May 1990, one 3,000-gallon unleaded gasoline underground storage tank (UST) and one 3,000-gallon diesel- fuel UST were removed from the Site. During closure activities, a release of petroleum hydrocarbons was encountered. The DERR assigned the Site Release Site FOP. Investigations at the Site in the early 1990s indicated a petroleum hydrocarbon plume had resulted from the release, extending approximately 50 feet north and northeast of the former UST locations. Corrective actions at the Site included excavation of approximately 150 cubic yards of impacted soil from the former UST location and immediate vicinity, and installation of two recovery wells for implementation of ‘pump and treat’ measures. Groundwater monitoring was conducted at the Site at various intervals through 2007. No exceedances of petroleum hydrocarbon contaminants were detected in any of the samples collected during the last reported monitoring event, conducted in April 2007. WSP completed additional soil and groundwater sampling by advancing four soil boring, collecting subsurface soil samples, installing four monitoring wells in the vicinity of the former UST basin, and collecting groundwater samples from one existing monitoring well and the four newly installed monitoring wells . Collected soil and groundwater samples and were submitted for laboratory analysis of petroleum hydrocarbon parameters. None of the reported concentrations of petroleum hydrocarbon parameters exceeded the Utah ISLs in soil and groundwater samples. Based on the analytical results and review of historical data it is recommended that Release FOP should be closed with a no further action. Utah Department of Transportation Maintenance Station No. 332 Project No. 2381400522 Soil and Groundwater Sampling Report 1.0 INTRODUCTION WSP USA Environment & Infrastructure Inc. (WSP) was retained by the Utah State Fuel Network (SFN) to conduct subsurface soil and groundwater sampling at the Utah Department of Transportation (UDOT) Maintenance Station No. 332 (Site), located at 362 West 100 North, Hanksville, Utah (Figure 1). The facility has Utah Department of Environmental Quality (UDEQ) identification No. 2000208. WSP conducted the sampling in response to the UDEQ Division of Environmental Response and Remediation (DERR) letter dated September 25, 2023 (DERR document No. ERRL-0333-23), requesting that soil and groundwater samples would be collected at the Site. The purpose of this sampling is to provide current information regarding the petroleum contamination at the Site so that a path to release closure can be established. The DERR assigned the Site Release Site OFU. This Report presents the finding of the soil and groundwater sampling conducted at the Site on February 13-15, 2024 and on March 7, 2024. 1.1 SITE BACKGROUND In May 1990, one 3,000-gallon unleaded gasoline underground storage tank (UST) and one 3,000-gallon diesel- fuel UST were removed from the Site. During closure activities, a release of petroleum hydrocarbons was encountered. The DERR assigned the Site Release Site FOP. Approximately 150 cubic yards of impacted soil were excavated from the former UST location and immediate vicinity. Investigations at the Site in the early 1990s indicated a petroleum hydrocarbon plume had resulted from the release, extending approximately 50 feet north and northeast of the former UST locations. A replacement UST system was installed at the Site in 1990 immediately west of the former UST basin. That system was closed by removal in December 2021 with no required corrective action. The approximate locations of the former UST basins are depicted on Figure 2. The release history (Release FOP) and historical monitoring data from 1990 through 2007 were summarized in a 2007 Semi-annual monitoring report (Kleinfelder, 2007)1. Summary tables of historical soil and groundwater sampling analytical results found in the Kleinfelder 2007 Report, along with a Site Plan showing the locations of all previously installed soil borings and monitoring wells at the Site, are provided in Appendix A. Based on the information provided Appendix A, 21 monitoring wells were installed at the Site between 1990 and 1992 (MW-1 through MW-21). Total petroleum hydrocarbon (TPH; not differentiated) was found at concentration level above the DERR initial screening level (ISL) for soil in one soil sample collected during installation of MW-5 at 15-feet below ground surface (bgs). Additional five monitoring wells (MW-22 through MW-26) were installed at the Site in 2005. Petroleum hydrocarbon contaminants including benzene, toluene, ethylbenzene, total xylenes (BTEX), and TPH diesel-range organics (TPH-DRO) were found at concentration levels above their respective DERR ISLs in soil sample collected from the boring of MW-26 at 9.5 feet bgs. TPH gasoline range organics (TPH-GRO) was found at concentration levels above the ISL in soil samples collected from MW-26 at 9.5 and 30 feet bgs. The approximate locations of MW-5 and MW-26 are depicted on Figure 2. Petroleum hydrocarbon contaminants concentration levels in groundwater from most monitoring wells at the Site had decreased below laboratory method detection limits by 1995. However, contaminants concentration levels in groundwater remained above DERR ISLs in monitoring wells MW-5 (TPH-GRO/DRO, BTEX), and MW-20 (TPH-GRO/DRO, benzene), which were located within or immediately adjacent to the former UST basin (Figure 2). Free-phase petroleum was encountered in monitoring well MW-5 between 1994 1 Kleinfelder 2007. Semi-Annual Groundwater Monitoring Event, UDOT Station #332, Hanksville, Utah, Facility ID No 2000208, Release Site EFOP, Kleinfelder, May 10, 2007 Utah Department of Transportation Maintenance Station No. 332 Project No. 2381400522 Soil and Groundwater Sampling Report and 1999. Free-phase petroleum was not encountered in any other monitoring well at the Site and was not measured at MW-5 in monitoring events in 2003 and 2004. Starting at 1995, decreasing groundwater level was observed at the Site, and by 2002 the groundwater level had dropped below the screened intervals in all monitoring wells except in MW-20. TPH-GRO and TPH-DRO were detected at concentration levels greater the ISLs in the groundwater sample collected from MW-26 in 2005 and 2006. No exceedances of petroleum hydrocarbon contaminants were detected in any of the samples collected during the last reported monitoring event, conducted in April 2007. 2.0 SITE ASSESSMENT ACTIVITIES Site assessment activities were conducted on February 13 through 15, 2024, and on March 6 through 7, 2024. Field work was completed by Ms. Rylie Burke of WSP (Certified UST Groundwater and Soil Samplers GS 1939). Prior to Site activities, Blue Stakes was contacted by WSP to have public utilities located and marked on, and near, the Site. Additionally, a private utility locating subcontractor was used to clear each proposed boring location. Site assessment activities included advancing four soil borings, collecting subsurface soil samples, installing and developing four monitoring wells, and collecting groundwater samples. One existing monitoring well, MW-26, was identified at the Site. The additional monitoring wells, MW-101 through MW-104 were arranged in relation to the former MW-26: MW-101 was installed 6 feet south and 6 feet west of MW-26; MW-102 was installed approximately 10 feet to the east of MW-26; MW-103 was installed approximately 10 feet to the west of MW-26, within footprint of the former UST basin, between MW-5 and MW-20: and MW-104 was installed northeast of the former UST basin, approximately 15 feet to the north of MW-26. The soil boring/monitoring well locations are shown on Figure 2. 2.1 SHALLOW SOIL BORINGS AND SOIL SAMPLING On February 14 through February 15, 2024, four soil borings were advanced by direct push dual tube drilling method using a track mounted Geoprobe™ rig to approximate depth of 35 feet bgs. Soil cores were collected continuously during advancement of soil borings. The soils were logged by WSP personnel and screened for organic vapors using field-calibrated photoionization detector (PID). Soil boring logs are provided in Appendix B. Soil borings SB-101, SB-102, and SB-104 exhibited PID readings of zero parts per million (ppm) throughout the length of the soil cores. In soil boring SB-103, PID reading were recorded above zero ppm in soil retrieved from the 21 to 25 feet bgs interval, with the highest reading of 50 ppm. Based on the screening data, two soil samples were collected from each boring from two predetermined depth intervals: one shallow sample at approximately 10 feet bgs; and one deep sample collected at the bottom of the boring. Sample depths were adjusted in the field based on recovery so that sufficient amount of soil would be submitted for analysis. An additional soil sample was collected from SB-103 from the depth interval where the highest PID reading was observed. Actual sample depths are noted on the soil borings (Appendix B). One field duplicate sample was collected from SB-103 for quality control. 2.2 MONITORING WELLS INSTALLATION AND DEVELOPMENT Upon completion of the soil sampling from each boring, a monitoring well was installed in the open borehole. All monitoring wells were completed to an approximate depth of 35 feet bgs. The wells were constructed of 15-feet-2-inch diameter schedule 40 polyvinyl chloride (PVC) factory slotted (0.010-inch) well screen and 20 Utah Department of Transportation Maintenance Station No. 332 Project No. 2381400522 Soil and Groundwater Sampling Report feet riser, and completed as flush-mounted, with an 8-inch diameter protective surface casing. Each monitoring well annulus was backfilled with 10/20 grade washed silica sand to approximately 2 feet above the top of the well screen, followed by hydrated medium bentonite chips placed above the sand pack to approximately 1 foot below the surface. The surface seal of the well annulus was completed with cement. Monitoring wells construction details are noted on the soil boring logs (Appendix A) and are summarized in Table 1. On March 6, 2024, WSP personnel returned to the Site to develop the wells. Well casing volumes were calculated using depth to water (DTW) and depth to bottom (DTB) measurements. A minimum of three well volumes were removed using disposable bailers until the water was mostly sediment free. 2.3 GROUNDWATER SAMPLING On March 7, 2024, following monitoring wells development, water levels were gauged again and were found to have complete recovery. Gauging information is summarized in Table 1. Prior to sampling, three additional casing volumes of water were removed from the wells using new disposable bailers. During purging , the water quality parameters of pH, conductivity, temperature, oxidation-reduction potential (ORP), and Dissolved Oxygen were measured in the sampling water using YSI-556 multiprobe meter. The calculated and actual purge volume data and the water quality parameters were recorded on field data sheets included in Appendix C. After purging was complete, disposable bailers were used to collect groundwater samples from the well into clean, laboratory-provided, 40-milliliter Volatile Organic Analysis (VOA) bottles. 2.4 SAMPLES HANDLING AND ANALYSIS Collected soil and water samples were placed directly into new, clean, sample containers provided by the analytical laboratory. Following collection, each sample was labeled with the sample identification number, WSP project number, and date and time of sample collection, and placed in an ice filled cooler and chilled to approximately 4° Celsius. Chain-of-custody forms were completed on-site to document delivery of the samples to the analytical laboratory. The samples were submitted for analysis of BTEXN and TPH-GRO by United State Environmental Protection Agency (US EPA) Method 8260, and for TPH-DRO by US EPA method 8015. Field quality control samples, including two field duplicates and two trip blank samples, were also submitted for analysis. Samples were submitted to Pace Analytical in Mount Juliet, Tennessee. 2.5 INVESTIGATION DERIVED WASTE Soil and water investigation derived waste (IDW) generated during drilling and sampling activities were collected into steel 55-gallon DOT-approved drums and stored onsite for later disposal. To facilitate waste removal and disposal, one soil sample was collected to establish a soil profile. The waste characterization laboratory analytical results are included in Appendix D. Disposal manifest for IDW will be submitted to DERR following completion of disposal activities. 2.6 MONITORING WELL ELEVATIONS SURVEY Monitoring well elevations were surveyed in the field relative to Site benchmark which was assumed at arbitrary elevation of 100 ft. Relative Top of Casing (TOC) elevations are presented in Table 1. 3.0 ENVIRONMENTAL SETTING The Site is located approximately 2509 feet south and 103 feet east from the N4 corner of Section 16, Township 28 South, Range 11 East, Salt Lake Base & Meridian. The local topography at the Site is moderately Utah Department of Transportation Maintenance Station No. 332 Project No. 2381400522 Soil and Groundwater Sampling Report flat. The area topography slopes gently to the north toward the Fremont River located approximately 0.24 miles at its point nearest to the Site. The Fremont River is the nearest surface water which trends from west to east. 3.1 SITE SOIL TYPE Soil samples collected during the February 2024 event were collected from the borings (SB-101 through SB- 104)at depths between 0 and 35 feet bgs. Soil encountered onsite at the shallow depths consisted of silty sand to clayey silt from the ground surface to approximately 25 feet bgs and silty clay with interbedded silty sand layers and consolidated gravels at depth from 25 feet bgs to the depth explored. Groundwater bearing zone was observed at approximately 25 feet throughout all the borings. 3.2 GROUNDWATER DEPTH AND FLOW DIRECTION Depth to groundwater at the Site was identified consistent throughout all four borings (Appendix B) at approximately 25 feet bgs. Relative TOC elevations and DTW measurements collected on March 6, 2024 were used to determine the relative groundwater elevations (Table 1). Potentiometric contours map was modeled based on the relative groundwater elevations and is presented on Figure 3. Groundwater gradient at the Site is approximately 0.005 foot per foot to the northeast. 4.0 ANALYTICAL RESULTS Soil and groundwater samples analytical results from the February-March 2024 sampling events were compared to the DERR ISLs. The analytical results and the ISLs for soil and groundwater are summarized in Table 2 and Table 3, respectively. A copy of the laboratory analytical reports and chain-of-custody documentation are attached to this Report as Appendix D. None of the analytical parameters, in any of the soil or groundwater samples collected at the Site, exceeded their respective ISLs. 4.1 SOIL SAMPLING RESULTS A total of nine parent soil samples were collected from four soil borings (SB-101 through SB-104). Low concentration levels of TPH-DRO and BTEX, below their respective ISLs, were detected in all soil samples. Low concentration levels of TPH-GRO, below the ISL, were detected in all soil samples except for the sample collected at 9.5-10.5 feet bgs from SB-101. The highest concentration level of TPH-DRO and TPH-GRO detected in the sample collected at 23.5-25 feet bgs from SB-103, at 46.6 mg/kg and 8.82 mg/kg, below the ISLs of 500 mg/kg and 150 mg/kg, respectively. 4.2 GROUNDWATER SAMPLING RESULTS A total of five groundwater samples were collected from onsite wells including the existing monitoring well MW-26 and four newly installed monitoring wells (MW-101 through MW-104). TPH-DRO was detected in all five groundwater samples at concentration levels ranging from 0.105 mg/L to 0.158 mg/L, below the ISL of 1 mg/L. TPH-GRO was detected in groundwater samples from MW-26, MW-102, MW-103, and MW-104 at concentration levels ranging from 0.0395 mg/L to 0.0529 mg/L, below the ISL of 1 mg/L. 4.3 QUALITY ASSURANCE/QUALITY CONTROL Quality Assurance/Quality Control (QA/QC) measures for the February-March sampling events included field and laboratory QA/QC procedures. Samples were collected and submitted for analysis in general accordance with soil and groundwater sampling and handling standard operating procedure (SOPs). All samples were Utah Department of Transportation Maintenance Station No. 332 Project No. 2381400522 Soil and Groundwater Sampling Report delivered to the analytical laboratory under chain-of-custody documentation in the correct temperature and analyzed within the analytical method specified holding times. Field QC samples, including field duplicates and trip blanks, were collected and submitted for analysis. Soil and groundwater QC samples analytical results are included in Table 2 and Table 3, respectively. Upon review of the laboratory analytical reports, none of the data was rejected based on QA/QC parameters, and the data is considered valid for the intended use. 5.0 CONCLUSIONS AND RECOMMENDATIONS Based upon a review of the February-March, 2024 soil and groundwater sampling analytical data presented in this Report and review of the historical data (Appendix A), it is concluded that the results are consistent with previously reported data; that the extent of soil and groundwater contamination had been adequately defined; and that the contaminants concentration levels remain well below the ISLs for all analytical parameters. Based on these findings it is recommended that Release FOF will be closed with no further action. Utah Department of Transportation Maintenance Station No. 332 Project No. 2381400522 Soil and Groundwater Sampling Report Figures ¬«24 W 100 N W Main St. S 100 W S 100 E E 100 N¬«24 S Center St. W North River Rd. Fremont River Hanksville Path: (X:\US\USXSJ100-SLC1\ProjectF\Environmental\Projects\2023_Projec ts_(0501-0536)\2381400522 S FN Hanksville Release\13 GIS \_Sampling_Report\Figure 1 - Site Location Map.mxd) 3/18/2024 1:47:09 PM Vicinity Map Site Location Map The map shown here has been created with all due and reasonable care and is strictlyfor use with WSP USA Project Number 23-814-00522. This map has not been certified by a licensed land surveyor, and any third party use of this map comes without warranties of any kind. WSP USA assumes no liability, direct or indirect, whatsoever for any such third party or unintended use. 23-814-00522EA3/18/2024 Job No.PM:Date:Scale: FIGURE1 Legen d Site Boundary 0 1,000500 Feet ± 1 in = 1,000 feet Site Location Utah Department of TransportationHanksville Station No. 332362 W 100 N, Hanksville, UtahFacility Identification No. 2000208, Release Site FOP DD DD DD DD DD DD DD DD DD DD DD DD DD DD DD DD DD DD DD DD DD DD DD DD DD DD DD DD DD DD DD DD DD DD DD DD DD DD DD DD DD DD DD DD DD DD DD DD DD DD DD DD DD DD &< &< &< &<&< &< &< W 100 N¬«24 Maintenance/OfficeBuilding EntranceGate MW-26 MW-103 MW-101 MW-102 MW-104 MW-20 MW-5 Underground Storage Tank System(removed 2021) Underground Storage Tank System(removed 1990) Path: (\\corp.pbwan.net\GLB-E&I\US\USXSJ100-SLC1\ProjectF\Environmental\Projects\2023_Projects_(0501-0536)\2381400522 S FN Hanksville Release\13 GIS\_Sampling_Report\Figure 2 - Site Layout Map.mxd) 3/18/2024 12:09:54 PM Vicinity Map The imagery service is provided by Google as part of a licenseagreement with the State of Utah. Site Layout Map Utah Department of TransportationHanksville Station No. 332362 W 100 N, Hanksville, UtahFacility Identification No. 2000208, Release Site FOP The map shown here has been created with all due and reasonable care and is strictlyfor use with WSP USA Project Number 23-814-00522. This map has not been certified by a licensed land surveyor, and any third party use of this map comes without warranties of any kind. WSP USA assumes no liability, direct or indirect, whatsoever for any such third party or unintended use. 23-814-00522EA3/18/2024 Job No.PM:Date:Scale: FIGURE2 Legen d &<Monitoring Well Location &<Former Monitoring Well Location* DD DD Chain-Link Fence 0 3015 Feet ± 1 in = 30 feet * Approximate Locations; Wells Abandoned/Destroyed &<&<&< &< &< Underground Storage Tank System(removed 2021) Underground Storage Tank System(removed 1990) MW-103 MW-26 MW-102 MW-104 MW-101 0.005 ft/ft 75.89 75.88 75.82 75.87 75.83 75.86 75.8475.85 Path: (\\corp.pbwan.net\GLB-E&I\US\USXSJ100-SLC1\ProjectF\Environmental\Projects\2023_Projects_(0501-0536)\2381400522 S FN Hanksville Release\13 GIS\_Sampling_Report\Figure 3 - Potentiometric Surface Map.mxd) 3/18/2024 12:45:49 PM Vicinity Map The imagery service is provided by Google as part of a licenseagreement with the State of Utah. Potentiometric Surface Map Utah Department of TransportationHanksville Station No. 332362 W 100 N, Hanksville, UtahFacility Identification No. 2000208, Release Site FOP The map shown here has been created with all due and reasonable care and is strictlyfor use with WSP USA Project Number 23-814-00522. This map has not been certified by a licensed land surveyor, and any third party use of this map comes without warranties of any kind. WSP USA assumes no liability, direct or indirect, whatsoever for any such third party or unintended use. 23-814-00522EA3/18/2024 Job No.PM:Date:Scale: FIGURE3 Legen d &<Monitoring Well Location Groundwater Elevation Contour(see note) Groundwater Flow 0 157.5 Feet ± 1 in = 15 feet Note:Elevations measured relative to arbitrary site benchmark of 100' Utah Department of Transportation Maintenance Station No. 332 Project No. 2381400522 Soil and Groundwater Sampling Report Tables Table 1: Monitoring Well Construction and Gauging Data Well ID Date Installed Date Gauged Well Diameter (Inch) Screen interval (ft below TOC) TOC Elevation^ (ft) TD (ft below TOC) DTW (ft below TOC) Groundwater Relative Elevation^ MW-26 10/2005 3/6/2024 2 20-35 99.82 33.33 23.96 75.86 MW-101 2/2024 3/6/2024 2 20-35 99.32 35.10 23.45 75.87 MW-102 2/2024 3/6/2024 2 20-36 99.74 34.05 23.90 75.84 MW-103 2/2024 3/6/2024 2 20-37 99.82 35.03 23.92 75.90 MW-104 2/2023 3/6/2024 2 20-38 99.84 35.64 24.03 75.81 Notes: ^Monitoring well elevations surveyed by WSP, March 2023; all elevations are relative to site datum ft - feet TOC - Top of Casing DTW- depth to water TD - total depth Hanksville UDOT Station No. 332 Soil and Groundwater Sampling Report Table 2: Soil Analytical Results Method Analyte ISL Units Result Qual Result Qual Result Qual Result Qual Result Qual Result Qual Result Qual 8260B/ 5030A TPH - GRO 150.0 mg/kg <0.183 0.467 J V3 0.554 B 0.4620 B J 0.542 B 8.82 0.498 J 8260 BENZENE 0.2 mg/kg 0.00395 0.00492 V3 0.00621 0.00213 0.00641 0.00504 0.00470 8260 ETHYLBENZENE 5.0 mg/kg 0.00174 0.0112 V3 0.00361 0.00772 0.00366 0.00311 0.0123 8260 METHYL TERT-BUTYL ETHER 0.3 mg/kg <0.000350 <0.000350 <0.000350 <0.000350 <0.000350 <0.000350 <0.000350 8260 NAPHTHALENE 51.0 mg/kg <0.00498 <0.00498 <0.00498 <0.00498 <0.00498 <0.00498 <0.00498 8260 TOLUENE 9.0 mg/kg 0.00510 0.0175 V3 0.00862 0.00849 0.00664 0.00480 J 0.0168 8260 XYLENES, TOTAL 142.0 mg/kg 0.00180 J 0.00310 V3 0.00274 J 0.0017 J 0.00379 0.00338 0.00303 8015 TPH - DRO 500.0 mg/kg 5.27 B 1.70 B J 39.5 B 1.52 B J 12.3 B 46.6 2.47 B J Notes: Non-detect results are reported less than the Method Detection Limit ISL - Utah Initial Screening Level TPH - total ptetroleum hydrocarbons DRO - diesel range organics GRO - gasoline range organics mg/kg - milligrams per kilograms Bold - Denotes analyte exceeded the ISL Qual - Qualifiers NA - not analyzed Qualifiers: J: The identification of the analyte is acceptable; the reported value is an estimate J2: Surrogate recovery limits have been exceeded; values are outside lower control limits J3: The associated batch QC was outside the established quality control range for precision V3: The internal standard exhibited poor recovery due to sample matrix interference. The analytical results will be biased high. B: The same analyte is found in the associated blank SB-103 (23.5-25) L1706989-07 2/15/2024 SB-103 (31.5-32.5) L1706989-09 2/15/2024Sample Date 2/15/2024 2/15/2024 2/14/2024 2/14/2024 2/15/2024 Lab Sample ID L1706989-05 L1706989-06 L1706989-03 L1706989-04 L1706989-08 Sample ID SB-101 (9.5-10.5) SB-101 (31.5-32.5) SB-102 (9.5-10.5) SB-102 (34-35) SB-103 (9.5-10.5) Hanksville UDOT Station No. 332 Soil and Groundwater Sampling Report Page 1 of 2 Table 2: Soil Analytical Results Method Analyte ISL Units 8260B/ 5030A TPH - GRO 150.0 mg/kg 8260 BENZENE 0.2 mg/kg 8260 ETHYLBENZENE 5.0 mg/kg 8260 METHYL TERT-BUTYL ETHER 0.3 mg/kg 8260 NAPHTHALENE 51.0 mg/kg 8260 TOLUENE 9.0 mg/kg 8260 XYLENES, TOTAL 142.0 mg/kg 8015 TPH - DRO 500.0 mg/kg Notes: Non-detect results are reported less than the Method Detection Limit ISL - Utah Initial Screening Level TPH - total ptetroleum hydrocarbons DRO - diesel range organics GRO - gasoline range organics mg/kg - milligrams per kilograms Bold - Denotes analyte exceeded the ISL Qual - Qualifiers NA - not analyzed Qualifiers: J: The identification of the analyte is acceptable; the reported value is an estimate J2: Surrogate recovery limits have been exceeded; values are outside lower control limits J3: The associated batch QC was outside the established quality control range for precision V3: The internal standard exhibited poor recovery due to sample matrix interference. The analytical results will be biased high. B: The same analyte is found in the associated blank Sample Date Lab Sample ID Sample ID Result Qual Result Qual Result Qual Result Qual 0.534 B 0.710 B 55.1 <0.108 0.00413 0.00514 <0.00938 <0.0000941 0.00317 0.00945 0.00794 J <0.000137 <0.000350 <0.000350 <0.00875 J3 <0.000101 <0.00498 <0.00498 <0.125 <0.00100 0.00651 0.0129 <0.0308 <0.000278 0.00269 J 0.00303 0.0238 J <0.000174 6.12 5.21 B 44.5 NR SB-104 (9.5-10.5) L1706989-01 2/14/2024 SB-104 (24-25) L1706989-02 2/14/2024 2/15/2024 2/15/2024 DUP-021524 Trip Blank L1706989-10 L1706989-13 Hanksville UDOT Station No. 332 Soil and Groundwater Sampling Report Page 2 of 2 Table 3: Groundwater Analytical Results Method Analyte ISL Units Result Qual Result Qual Result Qual Result Qual Result Qual Result Qual Result Qual 8015D/GRO TPH - GRO 1.0 mg/L <0.0314 0.0480 B J 0.0398 B J 0.0529 B J 0.0395 B J 0.0330 B J NA 8260B BENZENE 0.005 mg/L <0.0000941 <0.0000941 <0.0000941 <0.0000941 <0.0000941 <0.0000941 <0.0000941 8260B TOLUENE 1.0 mg/L <0.000278 <0.000278 <0.000278 <0.000278 <0.000278 <0.000278 <0.000278 8260B ETHYLBENZENE 0.7 mg/L <0.000137 <0.000137 <0.000137 <0.000137 <0.000137 <0.000137 <0.000137 8260B XYLENES, TOTAL 10 mg/L <0.000174 0.000218 J <0.000174 <0.000174 <0.000174 <0.000174 <0.000174 8260B METHYL TERT-BUTYL ETHER 0.2 mg/L <0.000101 <0.000101 <0.000101 <0.000101 <0.000101 <0.000101 <0.000101 8260B NAPHTHALENE 0.7 mg/L <0.00100 <0.00100 <0.00100 <0.00100 <0.00100 <0.00100 <0.00100 3511/8015 TPH - DRO 1.0 mg/L 0.135 B 0.119 B 0.105 B 0.158 B 0.109 B 0.134 B NA Notes: Non-detect results are reported less than the Method Detection Limit ISL - Utah Initial Screening Level TPH - total ptetroleum hydrocarbons DRO - diesel range organics GRO - gasoline range organics mg/L - milligrams per liter Bold - Denotes analyte exceeded the ISL Qual - Qualifiers NA - not analyzed Qualifiers: J: The identification of the analyte is acceptable; the reported value is an estimate B: The same analyte is found in the associated blank 3/7/2024 3/7/2024 L1713760-09 L1713760-11 3/7/2024 3/7/2024 3/7/2024Sample Date MW-101 3/7/2024 3/7/2024 L1713760-08 MW-102 MW-103 MW-104 MW-26 L1713760-10 Trip BlankDUP-030724Sample ID Lab Sample ID L1713760-01 L1713760-13L1713760-12 Hanksville UDOT Station No. 332 Soil and Groundwater Sampling Report Page 1 of 1 Utah Department of Transportation Maintenance Station No. 332 Project No. 2381400522 Soil and Groundwater Sampling Report Appendix A Historical Data J .,.. 0 30' -x -x -x LEGEND --x Gatte X -X -X 7 ♦New Monitoring Well Location (Installed October 2005)Used Oil AST X I ♦Existing Monitoring Well Location (Prior to 2005) S Boring Location (Installed August 1990) Pre-Existing Wells (Destroyed/Lost) >< >< 0 C I ffl "'O C Q) Q) .c cW >< 'iij I � X >< MW-18 >< Propane�' Tank x Current UST x System B-4 Truck Wash and Salt Storage >< >< >< ;. ♦ViW-21 ♦X V 1 MW-4 ♦MW-24 ♦MW-3 MW-25 ... ♦.-+-MW-23 . )x . MW-10 ♦ -------.,; MW-26-+-MW-2 +Neighboring Mv[l' : ♦ /Trailer -� \ •MW-5 /+ MW-1 + M:-22 Fo:rner UST N-i 1 Locations I Domestic \ Supply x Well ,>< 120' ---Lx _ex -�- -x -x J _/ Gale Approximate Scale: 1 11 = 60' KLEINFELDER 849 West Levoy Drive, Suite 200 Salt Lake City, Utah 84123-2544 PH. (801) 261-3336 fAX. (801) 261-3306 www.kleinfelder.com DRAWN: 04/25/2007 APPROVED BY· Propane Tank M\A-16 SITE PLAN UDOT Maintenance Station #332 Hanksvile�Ulah PROJECT NO. 75138.005 FILE NAME: SLC7d079.dw 1 DRAWN BY: s.c. K.R. ~ CHECKED BY: K.S. , FIGURE 1 @ by Kleinfelder Inc., 2007 37 Ex. B-3 G2 TableA-2 Historical Groundwat--11:levation Data and Analytical Results -Groundwater Mor"-lring :aksville UDOT Maintenance Station #332 MW-1 08/08/90 CTC 97.37 ND 13 1.1 1.4 0.15 0.83 NA NA 05/20/91 CTC 97.37 ND 4.8 1.1 0.3 0.12 0.32 NA NA 02/26/92 CTC 97.37 ND <1 0.121 0.0377 0.0218 0.0898 NA NA 08/08/92 CTC 97.37 ND 2.7 0.345 0.0822 0.0285 0.0898 NA NA 01/08193 CESI 97.37 ND <0.5 0.0953 0.0089 0.0068 0.0206 <0.002 NA 04/07/93 CESI 97.37 ND <0.5 0.0183 <0.002 <0.002 <0.006 <0.002 NA 11/17/93 CESI 97.37 18.63 78.74 Data Not Available 01/07/94 EWP 4,298.79 20.28 4,278.51 <0.5 0.201 0.0065 0.0256 0.0232 <0.002 <0.002· 03/30/94 EWP 4,298.79 20.69 4,278.10 Measured Water Levels Only 07/20/94 EWP 4,298.79 18.99 4,279.80 <0.5 0.0412 0.0031 0.0104 0.0088 <0.002 NA 02/15/95 EWP 4,298.79 19.70 4,279.09 <0.5 0.0365 <0.002 0.0301 0.0062 <0.002 NA 09/20/95 EWP 4,298.79 18.81 4,279.98 <0.5 0.074 0.005 0.0234 0.019 <0.002 NA 01/03196 EWP 4,298.79 19.69 4,279.10 <0.5 0.0161 <0.002 0.0155 0.0073 <0.002 NA 07/01/96 EWP 4,298.79 20.31 4,278.48 <0.5 0.0031 <0.002 <0.002 <0.006 <0.002 NA 07/29/97 EWP 4,298.79 2208 4,276.71 <0.5 <0.002 <0.002 <0.002 <0.006 <0.002 NA 06fl5/98 EWP 4,298.79 22.32 4,276.47 <0.5 <0.002 <0.002 <0.002 <0.006 <0.002 <0.002 08/26/98 EWP 4,298.79 22.35 4,276.44 Measured Water Levels Only, Well Not Sampled 05/12/99 EWP 4,298.79 23.00 4,275.79 <0.5 <0.002 <0.002 <0.002 <0.006 <0.002 <0.002 04f22/03 KA 4,298.79 24.10 4,274.69 Measured Water Levels Only, Well Not Sampled 10/09/03 KA 4,298.79 24.10 4,274.69 Measured Water Levels Only, Well Not Sampled 04120/04 KA 4,298.79 23.85 4,274.94 Measured Water Levels Only, Well Not Sampled 12/16/04 KA 4,298.79 24.49 4,274.30 Measured Water Levels Only, Well Not Sampled 04126/05 KA 4,298.79 23.84 4,274.95 Measured Water Levels Only, Well Not Sampled 10/26/05 KA 4,298.79 24.19 4,274.60 Measured Water Levels Onl , Well Not Sam led MW-2 08/08/90 CTC 97.54 ND 20 1.9 1.5 0.36 0.74 NA NA 05/20/91 CTC 97.54 ND Well Not Sampled 02/26/92 CTC 97.54 ND 1.8 2.13 0.0703 0.0675 0.1055 · NA NA 08/08/92 CTC 97.54 ND 5.6 0.0245 0.0398 0.0373 0.1247 NA NA 01/08193 CESI 97.54 ND <0.5 0.0557 <0.002 <0.002 <0.006 <0.002 NA 04/07/93 CESI 97.54 ND <0.5 0.0077 0.0025 <0.002 <0.006 <0.002 NA 11/17/93 CESI 97.54 19.32 78.22 Data Not Available 01/07/94 EWP 4,298.96 20.18 4,278.78 <0.5 <0.002 <0.002 <0.002 <0.006 NA 03/30/94 EWP 4,298.96 21.20 4,277.76 Measured Water Levels Only 07/20/94 EWP 4,298.96 19.81 4,279.15 <0.5 <0.002 <0.002 . <0.002 <0.006 <0.002 NA 02/15/95 EWP 4,298.96 20.37 4,278.59 <0.5 <0.002 <0.002 _<0.002 <0.006 <0.002 NA 09/20/95 EWP 4,298.96 19.56 4,279.40 <0.5 <0.002 <0.002 <0.002 <0.006. <0.002 NA 01/03196 EWP 4,298.96 20.31 4,278.65, <0.5 <0.002 <0.002 <0.002 <0.006 <0.002 NA 07/01/96 EWP 4,298.96 21.12 4,277.84 <0.5 <0.002 <0.002 <0.002 <0.006 <0.002 NA I07/29/97 EWP 4,298.96 22.85 4,276.11 <0.5 <0.002 <0.002 <0.002 <0.006 <0.002 <0.002 06/25/98 EWP 4,298.96 22.90 4,276.06 <0.5 <0.002 <0.002 <0.002 <0.006 <0.002 <0.002 08/26/98 EWP 4,298.96 22.99 4,275.97 Me�sured Water Levels Only, Well Not Sampled 05/12/99 EWP 4,298.96 23.58 4,275.38 Measured Water Levels Only (Not representative of aquifer conditions), Well not Sampled 04/22/03 KA 4,298.96 ND Dry Well 10/09/03 KA 4,298.96 ND Dry Well 04/20/04 KA 4,298.96 ND DryWell 12/16/04 KA 4,298.96 ND Ory Well 04126/05 KA 4,298.96 ND Dry Well 10/26/05 KA 4,298.96 ND D Well MW-3 08/08/90 CTC 97.58 ND 3.30 0.36 0.034 0.019 0.029 NA NA 05/20/91 CTC 97.58 ND NS NS NS NS NS NS NS 02/26/92 CTC 97.58 NO <1 <0.001 <0.001 <0.001 <0.002 NA NA 08/08/92 CTC 97.58 ND 4.30 <0.001 <0.001 <0.001 <0.002 NA NA 01/08/93 CESI 97.58 ND <0.5 <0.002 <0.002 <0.002 <0.006 <0.002 NA 04/07/93 CESI 97.58 ND <0.5 <0.002 <0.002 <0.002 <0.006 <0.002 NA 11/17/93 CESI 97.58 19.67 . 77.91 Data Not Available 01/07/94 EWP 4,298.99 20.50 4,278.49 <0.5 <0.002 <0.002 <0.002 <0.006 <0.002 NA 03/30/94 EWP 4,298.99 21.51 4,277.48 Measured Water Levels Only, Well Not Sampled 07/20/94 EWP 4,298.99 20.24 4,278.75 <0.5 <0.002 <0.002 <0.002 <0.006 <0.002 NA 02/15/95 EWP 4,298.99 20.70 4,278.29 <0.5 <0.002 <0.002 <0.002 <0.006 <0.002 NA 09/20/95 EWP 4,298.99 19.98 4,279.01 <0.5 <0.002 <0.002 <0.002 <0.006 <0.002 NA 01/03196 EWP 4,298.99 20.61 4,278.38 <0.5 <0.002 <0.002 <0.002 <0.006 <0.002 NA 07/01/96 EWP 4,298.99 21.39 4,277.60 <0.5 <0.002 <0.002 <0.002 <0.006 <0.002 NA 07/29/97 EWP 4,298.99 23.07 4,275.92 <0.5 <0.002 <0.002 <0.002 <0.006 <0.002 <0.002 06/25/98 EWP 4,298.99 23.17 4,275.82 <0.5 <0.002 <0.002 <0.002 <0.006 <0.002 <0.002 08126/98 EWP 4,298.99 23.28 4,275.71 Measured Water Levels Only, Well Not Sampled 05/12/99 EWP 4,298.99 23.78 4,275.21 Measured Water Levels Only (Not representative of aquifer conditions), Well not Sampled 04/22/03 KA 4,298.99 ND Dry Well 10/09/03 KA 4,298.99 ND Dry Well 04/20/04 KA 4,298.99 ND Dry Well 12/16/04 KA 4,298.99 ND Ory Well 04126/05 KA 4,298.99 ND Ory Well 10/26/05 KA 4,298.99 ND D Well UOAS/75138.005/SLC7L 135 Page 1 of 7 May9,2007 Copyright 2007 Kleinfelder MW-4 MW-5 MW-6 Hlsto 08/08/90 CTC 97.63 · 05/20191 CTC 97.63,. 02/26/92 CTC 97.63 08/08/92 CTC 97.63 01/08193 CESr 97.63 0.W7/93 CESI 97.63 11/17/93 CESI 97.63 01/07/94 EWP 4,299.02 03/30/94 EWP 4,299.02 07/20/94 EWP 4,299.02 03/14/95 EWP 4,299.02 09/20/95 EWP 4,299.02 01/03/96 EWP 4,299.02 07/01/96 EWP 4,299.02 07/29/97 EWP 4,299.02 06/25/98 EWf> 4,299.02 08/26/98 EWP 4,299.02 05/12/99 EWP 4,299.02 04/22/03 KA 4,299.02 10/09/03 KA 4,299.02 04120/04 KA 4,299.02 12/16/04 KA 4,299.02 04/26/05 KA 4,299.02 10/26/05 KA 4,299.02 08/08/90 CTC 97.61 05/20/91 CTC 97.61 02/26/92 CTC 97.61 08/28/92 CTC 97.61 01/08/93 CESI 97.61 04/07/93 CESI 97.61 11/17/93 CESI 97.61 01/07/94 EWP 4,299.01 03/30/94 EWP 4,299.01 07/20/94 EWP 4,299.01 02/15/95 EWP 4,299.01 09/19/95 EWP 4,299.01 01/03/96 EWP 4,299.01 07/01/96 EWP 4,299.01 07/29/97 EWP 4,299.01 06/25/98 EWP 4,299.01 08/26/98 EWP 4,299.01 05/12/99 EWP 4,299.01 04/22/03 KA 4;299.01 10/09/03 KA 4,299.01 04/20/04 KA 4,299.01 12/16/04 KA 4,299.01 04126/05 KA 4,299.01 10/26/05 KA 4,299.01 09/14/90 CTC 98.00 05/20/91 CTC 98.00 02/26/92 CTC 98.00 08/08/92 CTC 98.00 01/08193 CESI 98.00 0.W7/93 CESI 98.00 � 1/17/93 CESI 98.00 01/07/94 EWP 4,299.37 03/30/94 EWP 4,299.37 07/20/94 EWP 4,299.37 02/15/95 EWP 4,299.37 09/19/95 EWP 4,299.37 01/02/96 EWP 4,299.37 07/01/96 EWP 4,299.37 07/29/97 EWP 4,299.37 . 06/25/98 EWP 4,299.37 08/26/98 EWP 4,299.37 05/12/99 EWP 4,299.37 UDAS/75138.005/SLC7L 135 Copyright 2007 Kleinfelder. Table A-2 roundwater Elevation Data and Analytical Results - Hanksville UDOT Maintenance Station #33� r Monitoring ND 19 2.1 1.1 0.2 0.52 NA NA ND NS NS NS NS NS NS NS ND 1.7 1.2 0.041 0.028 <0.05 NA NA ND 3.5 12.4 0.141 0.337 <0.05 NA NA ND <0.5 0.499 <0.002 <0.002 <0.006 <0.002 NA ND <0.5 0.0994 <0.002 <0.002 · <0.006 <0.002 NA 19.64 77.99 Data Not Available 20.48 <0.5 0.0374 <0.002 <0.002 <0.006 <0.002 ·NA 21.54 4,277.48 Mea�ured Water Levels Only 20.18 4,278.84 <0.5 0.0102 <0.002 <0.002 <0.006 <0.002 NA 20.66 4,278.36 <0.5 0.0024 <0.002 <0.002 <0.006 <0.002 NA 19.90 4,279.12 <0.5 0.005 <0.002 <0.002 <0.006 <0.002 NA 20.61 4,278.41 <0.5 <0.002 <0.002 <0.002 <0.006 <0.002 NA 21.21 4,277.81 <0.5 <0.002 <0.002 <0.002 <0.006 <0.002 NA 23.60 4,275.42 <0.5 <0.002 <0.002 <0.002 <0.006 <0.002 NA 23.47 4,275.55 Well Not Sampled-Insufficient Water in Well 23.25 4,275.77 Measured Water Levels Only, Well Not Sampled 23.69 4,275.33 Measured Water Levels Only (Not representative of aquifer conditions), Well not Sampled DryWell DryWell Dry Well DryWell DryWell D Well ND 150 25 45 1.9 13 NA NA ND NS NS NS NS NS NS NS ND 880 20.4 33.4 2.34 13.87 NA NA ND 18700 46.3 66.6 1.2 16.1 NA NA ND 140 13.5 46.1 3.51 21.7 0.283 NA ND 61 3.92 5.08 1.12 4.34 0.316 NA 19.32 78.29 Data Not Available LH Well not sampled because of liquid hydrocarbons 21.29 21.37 0.08 4,277.64 Measured Water Levels Only 19.81 4,279.20 , Well not sampled because of liquid hydrocarbons 20.36 20.37 0.01 4,278.64 · Well not sampled because of liquid hydrocarbons 19.55 19.56 0.01 4,279.45 Well not sampled because of liquid hydrocarbons 20.31 4,278.70 Well not sampled because of liquid hydrocarbons 21.08 4,277.93 56.8 2.36 3.23 2.26 6.24 0.388 NA 22.70 23.28 0.58 4,275.73 Well not sampled because of liquid hydrocarbons 23.47 23.47 0.01 4,275.54 Well not sampled because of liquid hydrocarbons 23.24 23.25 0.01 4,275.76 Measured water & liquid hydrocarbon _levels only-well not sampled 23.60 23.68 . 0.08 4,275.48 Measured Water Levels Only (Not representative of aquifer conditions), Well not Sampled 24.04 4,274.97 Measured Water Levels Only, Well Not Sampled· 24.09 4,274.92 Measured Water Levels Only, Well Not Sampled 23.83 4,275.18 Measured Water Levels Only, Well Not Sampled Measured Water Levels Only, Well Not Sampled Measured Water Levels Only, Well Not Sampled Measured Water Levels Onl , Well Not Sam led ND 0.02 <0.002 <0.002 <0.002 <0.002 NA NA ND <.02 <0.002 <0.002 <0.002 <0.002 NA NA ND <1 <0.001 <0.001 <0.001 <0.002 NA NA ND <1 <0.001 <0.001 <0.001 <0.002 NA NA ND <0.5 <0.002 <0.002 <0.002 <0.006 <0.002 NA ND <0.5 <0.002 <0.002 <0.002 <0.006 <0.002 NA 20.18 77.82 Data Not Available 21.00 4,278.37 <0.5 <0.002 <0.002 <0.002 <0.006 <0.002 NA 22.09 4,277.28 Measured Water Levels Only 20.25 4,279.12 <0.5 <0.002 <0.002· <0.002 <0.006 <0.002 NA 21.20 4,278.17 <0.5 <0.002 <0.002 <0.002 <0.006 <0.002 NA 20.47 4,278.90 <0.5 <0.002 <0.002 <0.002 <0.006 <0.002 NA 21.12 4,278.25 <0.5 <0.002 <0.002 <0.002 <0.006 <0.002 NA 21.68 4,277.69 <0.5 <0.002 <0.002 <0.002 <0.006 <0.002 NA 23.39 4,275.98 <0.5 <0.002 <0.002 <0.002 <0.006 <0.002 NA 23.67 4,275.70 Well Not Sampled-Insufficient Water in Well 23.62 4,275.75 Measured Water Levels Only, Well Not Sampled DRY D Well Page 2of7 May 9,2007 TableA-2 Historical Groundwarl;levation Data and Analytical Results -Groundwater Mor�ng 1ksville UDOT Maintenance Station #332 09/1419() CTC 0.2 0.13 <0.002 <0.002 05/20/91 CTC No data, well destroyed No data, well destroyed 02/26/92 CTC No data, well destroyed No data, well destroyed 08/28/92 CTC No data, well destroyed No data, well destroyed 01/08/93 CESI No data, well destroyed No data, well destroyed 04/07/93 CESI No data, well destroyed No data, well destroyed 11/17/93 CESI No data, well destroyed No data, well destroyed 01/07/94 EWP No data, wen destroyed No data, well destroyed 03/30/94 EWP No data, well destroyed No data. well destroyed 07/20i94 EWP No data, well destroyed No data, well destroyed 02/15/95 EWP No data. well destroyed No data, well destroyed 09/19/95 EWP No data, well destroyed No data, weU destroyed 01/03/96 EWP No data, well destroyed No data, well destroyed 07/01/96 EWP No data, well destroyed No data, well destroyed 07/29/97 EWP No data, well destroyed No data, wen destroyed 06/25/98 EWP No data, well destroyed No data, well destroyed 08/26/98 EWP No data, well destroyed No data, wen destroyed 05/12/99 EWP No data, well destro ed No data, well destro ed MW-8 09/1419() CTC ND <.02 <0.002 <0.002 <0.002 <0.002 NA NA 05/20/91 CTC ND Well not sampled 02/26/92 CTC ND <1 <0.001-<0.001 <0.001 <0.002 NA NA 08/28/92 CTC ND <1 <0.001 <0.001 <0.001 <0.002 NA NA 01/08/93 CESI ND <0.5 <0.002 <0.002 <0.002 <0.006 <0.002 NA 04/07/93 CESI ND Well not sampled 11/17/93 CESI NM Data Not Available 01/07/94 EWP 4,298.20 19.94 4,278.26 <0.5 <0.002 <0.002 <0.002 <0.006 <0.002 NA 03/30/94 EWP 4,298.20 21.00 4,277.20 Measured Water Levels Only, Well Not Sampled 07/20/94 EWP 4,298.20 19.81 4,278.39 Measured Water Levels Only, Well Not Sampled 02/15/95 EWP 4,298.20 20.14 4,278.06 Measured Water Levels Only, Well Not Sampled 09/19/95 EWP 4,298.20 No data, well lid stuck shu Measured Water Levels Only, Well Not Sampled 01/03/96 EWP 4,298.20 20.06 4,278.14 Measured Water Levels Only, Well Not Sampled 07/01/96 EWP 4,298.20 20.97 4,277.23 Measured Water Levels Only, Well Not Sampled 07/29/97 EWP 4,298.20 22.58 4,275.62 Measured Water Levels Only, Well Not Sa mpled 06/25/98 EWP 4,298.20 NM Well Not Sampled 08126/98 EWP 4,298.20 22.76 4,275.44 Measured Water Levels Only, Well Not Sampled 05/12/99 EWP 4,298.20 23.18 4,275.02 Measured Water Levels Onl Not re resentative of a uifer conditions , Well not Sam led MW-9 09/14/90 CTC 97.16 ND <.02 <0.002 <0.002 <0.002 <0.002 NA NA 05/20/91 CTC 97.16 ND Well not sampled. 02/26/92 CTC 97.16 ND <1 <0.001 <0.001 <0.001 <0.002 ,NA NA 08/28/92 CTC 97.16 ND <1 <0.001 <0.001 <0.001 <0.002 NA 01/08/93 CESI 97.16 ND <0.5 <0.002 <0.002 <0.002 <0.006 NA 04/07/93 CESI 97.16 ND Well not sampled . 11/17/93 CESI 97.16 19.30 77.86 Data Not Available 01/07/94 EWP 4,298.58 20.13 4,278.45 <0.5 <0.002 <0.002 <0.002 <0.006 <0.002 NA 03/30/94 EWP 4,298.58 21.09 4,2TT.49 Measured Water Levels Only, Well Not Sampled 07/20/94 EWP 4,298.58 19.94 4,278.64 Measured Water Levels Only, Well Not Sampled 02/15/95 EWP 4,298.58 20.29 4,278.29 Measured Water Levels Only, Well Not Sampled 09/19/95 EWP 4,298.58 19.65 4,278.93 Measured Water Levels Only, Well Not Sampled 01/03/96 EWP 4,298.58 20.22 4,278.36 Measured Water Levels Only, Well Not Sampled 07/01/96 EWP 4,298.58 21.18 4,2TT.40 Measured Water Levels Only, Well Not Sampled 07/29/97 EWP 4,298.58 22.83 4,275.75 Measured Water Levels Only, Well Not Sampled 06/25/98 EWP 4,298.58 NM Well not sampled 08/26/98 EWP 4,298.58 23.07 4,275.51 Measured Water Levels Only, Well Not Sampled 05/12/99 EWP 4,298.58 23.55 4,275.03 Measured Water Levels Onl Not re resentative of a uifer conditions • Well ,not Sam led MW-10 09/14/90 CTC ND 0.03 0.0024 <0.002· <0.002 <0.002 NA .NA 05/20/91 CTC ND Well not sampled 02/26/92 CTC ND <1 <0.001 <0.001 <0.001 "<0.002 NA 08/28/92 CTC ND <1 <0.001 <0.001 <0.001 <0.002 NA 01/08/93 CESI ND <0.5 ·<0.002 <0.002 <0.002 <0.006 NA . 04/07/93 CESI ND Well not sampled 11/17/93 CESI 18.84 Data Not Available 01/07/94 EWP 4,298.44 19.71 4,278.73 <0.5 <0.002 <0.002 <0.002 <0.006 <0.002 NA 03/30/94 EWP 4,298.44 Well not located Well not located 07/20/94 EWP 4,298.44 Well not located Well not located 02/15/95 EWP 4,298.44 Well not located Well not located . 09/19/95 EWP 4,298.44 Well not located Well not located 01/03/96 EWP 4,298.44 Well not located Well not located 07/01/96 EWP 4,298.44. Well not located Well not located 07/29/97 EWP 4,298.44 Well not located Well not located 06/25/98 EWP 4,298.44 Well not located Well not located 08/26/98 EWP 4,298.44 Well not located Well not located 05/12/99 EWP 4,298.44 Well not located Well not located UDAS/75138.005/SLC7L 135 Page 3 of 7 May 9,2007 Copyright 2007 Kleinfelder MW-11 MW-12 MW-13 Hist .. 09/14/90 CTC 97.62 05/20/91 CTC 97.62 02/26/92 CTC 97.62 08/28/92 CTC 97.62 01108/93 CESI 97.62 04/07/93 CESI 97.62 11/17/93 CESI 97.62 01/07/94 EWP 4,298.38 03/30/94 EWP 4,298.38 07/20/94 EWP 4,298.38 02/15195 EWP 4,298.38 09/19/95 EWP 4,298.38 01103196 EWP 4,298.38 . 07101/96 EWP 4,298.38 07/29/97 EWP 4,298.38 06/25/98 EWP 4,298.38 08/26/98 EWP 4,298.38 05/12/99 EWP 4,298.38 09/14/90 CTC 05/20/91 CTC 02/26/92 CTC 08/28/92 CTC 01/08/93 CESI 04/07/93 CESI 11/17/93 CESI ????? 01107/94 EWP 4,299.00 03/30/94 EWP 4,299.00 07/20/94 EWP 4,299.00 02/15/95 EWP 4,299.00 09/19/95 EWP 4,299.00 01103196 EWP 4,299.00 07101/96 EWP 4,299.00 07/29/97 EWP 4,299.00 06/25/98 EWP 4,299.00 08/26/98 EWP 4,299.00 05/12/99 EWP 4,299.00 04/22/03 KA 4,299.00 10109/03 KA 4,299.00 04/20/04 KA 4,299.00 12/16/04 KA 4,299.00 04/26/05 KA 4,299.00 10/26/05 KA 4,299.00 09/14/90 CTC 97.85 05/20/91 CTC 97.85 02/26/92 CTC 97.85 08/28/92 CTC 97.85 01108/93 CESI 97.85 04/07/93 CESI 97.85 11/17/93 CESI 97.85 01/07/94 EWP 4,299.23 03/30/94 EWP 4,299.23 07/20/94 EWP 4,299.23 02/15/95 EWP 4,299.23 09/19/95 EWP 4,299.23 01/03196 EWP 4,299.23 07/01/96 EWP 4,299.23 07/29/97 EWP 4,299.23 06/25/98 EWP 4,299.23 08/26/98 EWP 4,299.23 05/12/99 EWP 4,299.23 UDAS/75138.005/SLC7L 135 Copyright 2007 Kleinfelder TableA-2 roundwater Elevation Data and Analytical Results - Hanksville UDOT Maintenance Station #33 .. ND 0.09 0.036 0.021 <0.002 0.0027 NA NA ND Well not sampled ND <1 <0.001 <0.001 <0.001 <0.002 NA NA ND Well not sampled ND <0.5 <0.002 <0.002 <0.002 <0.006 <0.002 NA ND <0.5 <0.002 <0.002 <0.002 . <0.006 <0.002 NA 17.98 79.64 Data Not Available 18.93 4,279.45 <0.5 <0.002 <0.002 <0.002 <0.006 <0.002 NA 20.09 4,278.29 Measured Water Levels Only, Well Not Sampled 18.29 4,280.09 Measured Water Levels Only, Well Not Sampled 19.16 4,279.22 . Measured Water Levels Only, Well Not Sampled 18.19 4,280.19 Measured Water Levels Only, Well Not Sampled 19.13 4,279.25 Measured Water Levels Only, Well Not Sampled 19.88 4,278.50 Measured Water Leve� Only, Well Not Sampled 21.72 4,276.66 Measured Water Levels Only, Well Not Sampled NM Well Not Sampled 21.94 4,276.44 Measured Water Levels Only. Well Not Sampled 22.67 4,275.71 Measured Water Levels On Not re resentative of a uifer conditions • Well not Sam led ND 1.3 0.42 0.34 0.042 0.13 NA NAND Well not sampled ND <1 0.0116 <0.001 <0.001 0.0021 NA NA ND <1 0.0341 <0.001 <0.001 NA NA ND <0.5 <0.002 <0.002 <0.002 <0.006 <0.002 NA ND <0.5 <0.002 <0.002 <0.002 <0.006 <0.002 NA 18.86 ????? Well not sampled 19.96 4,279.04 <0.5 <0.002 <0.002 <0.002 <0.006 <0.002 NA 21.30 4,2TT.70 Data Not Available 19.55 4,279.45 <0.5 <0.002 <0.002 <0.002 <0.006 <0.002 NA 20.24 4,278.76 <0.5 <0.002 <0.002 <0.002 <0.006 <0.002 NA 19.23 4,279.77 <0.5 <0.002 <0.002 <0.002 <0.006 <0.002 NA 20.36 4,278.64 <0.5 <0.002 <0.002 <0.002 <0.006 <0.002 NA 20.75 4,278.25 · <0.5 <0.002 <0.002 <0.002 <0.006 <0.002 NA 22.48 4,276.52 <0.5 <0.002 <0.002 <0.002 <0.006 <0.002 <0.002 22.75 4,276.25 <0.5 <0.002 <0.002 <0.002 <0.006 <0.002 <0.002 22.75 4,276.25 Measured Water Levels Only, Well Not Sampled 23.31 4,275.69 <0.5 <0.002 <0.002 <0.002 <0.006 <0.002 <0.002 DRY Measured Water Levels Only, Well Not Sampled 24.54 4,274.46 Measured Water Levels Only, Well Not Sampled 24.21 4,274.79 Measured Water Levels Only, Well Not Sampled NA Well Not Acessible Due to Asphalt Covering NA Well Not Acessible Due to Asphalt Covering NA Well Not Acessible Due to As halt Coverin ND 1.1 0.61 0.12 0.Q11 0.004 NA NA ND Well not sampled ND <1 <0.001 <0.001 <0.001 <0.002 NA NA ND <1 <0.001 <0.001 <0.001 <0.002 NA NA ND <0.5 <0.002 <0.002 <0.002 <0.006 <0.002 NA ND Data Not Available 19.58 78.27 <0.5 <0.002 <0.002 <0.002 <0.006 <0.002 NA 20.41 4,278.82 <.0.5 <0.002 <0.002 <0.002 <0.006 <0.002 NA 21.60 4,277.63 Measured Water Levels Only, Well Not Sampled 20.05 4,279.18 Measured Water Levels Only, Well Not Sampled 20.63 4,278.60 Measured Water Levels Only, Well Not Sampled 19.79 4,279.44 Measured Water Levels Only, Well Not Sampled 20.56 4,278.67 Measured Water Levels Only, Well Not Sampled 21.00 4,278.23 Measured Water Levels Only, Well Not Sampled 22.90 4,276.33 Measured Water Levels Only, Well Not Sampled NM Well Not Sampled 23.17 4,276.06 Measured Water Levels Only, Well Not Sampled 23.68 4,275.55 Measured Water Levels Onl Not re resentative of a uifer conditions , Well not Sam led Page 4of 7 May 9, 2007 I MW-15 MW-16 MW-17 09/14/90 CTC 05/20/91 CTC 02/26/92 CTC 08/28/92 CTC 01/08193 CESI 04/07193 CESI 11/17193 CESI 01/07194 EWP 03/30194 EWP 07/20194 EWP 02/15195 EWP 09/19195 EWP 01/03196 EWP 07/01196 EWP 07/29197 EWP 06/25198 EWP 08/26/98 EWP 05/12/99 EWP 10/26/90 CTC 05/20191 CTC 02/26192 CTC 08/28/92 CTC 01/08/93 CESI 04/07/93 CESI . 11/17/93 CESI 01/07194 EWP 03/30194 EWP 07/20194 EWP 02/15195 EWP 09/20195 EWP 01/03196 EWP 07/01196 EWP 07/29197 EWP 06/25/98 EWP 08/26198 EWP 05/12/99 EWP 10/26/90 CTC 05/20191 CTC 02/26192 CTC 08/28/92 CTC 01/08193 CESI 04/07193 CESI 11/17193 CESI 01/07194 EWP 03/30194 EWP 07/20194 EWP 02/15195 EWP 09/19195 EWP 01/03196 EWP 07/01196 EWP 07/29197 EWP 06/25/98 EWP 08/26198 EWP 05/12/99 EWP 10/26/90 CTC 05/20191 CTC 02/26/92 CTC 08/28192 CTC 01/08193 CESI 04/07193 CESI 11/17193 CESI 01/07/94 EWP 03/30194 EWP 07/20194 EWP 02/15/95 EWP 09/19/95 EWP 01/03196 EWP 07/01196 EWP 07/29197 EWP 06/25198 EWP 08/26/98 EWP. 05/12/99 EWP TableA-2 Historical GroundwaJer �levation Data and Analytical Results -Groundwater Mooitoring 1ksville UDOT Maintenance Station #332 ND <0.002 ND Well not sampled ND <1 <0.001 <0.001 <0.001 <0.002 NA ND <1 <0.001 <0.001 <0.001 <0.002 NA ND <0.5 <0.002 <0.002 <0.002 <0.006 <0.002 ND Well Not Sampled 19.58 82.27 Data Not Available 20.41 4,276.55 <0.5 <0.002 <0.002 <0.002 <0.006 <0.002 21.60 4,275.36 Measured Water Levels Only, Well Not Sampled 20.05 4,276.91 Measured Water Levels Only, Well Not Sampled 20.63 4,276.33 Measured Water Levels Only, Well Not Sampled 19.79 4,2n.11 Measured Water Levels Only, Well Not Sampled 20.56 4,276.40 Measured Water Levels Only, Well Not Sampled 19.61 4,2n.35 Measured Water Levels Only, Well Not Sampled ND No data, well silted in NM No data, well silted in NM No data, well silted in NM No data, well silted in Data Not Available 0.07 0.071 <0.002 <0.002 <0.002 <0.002 No data, wen destroyed No data, well destroyed No data, well destroyed No data, well destroyed No data, well destroyed No data, well destroyed No data, well destroyed No data, well destroyed No data, well destroyed No data, well destroyed No data, well destroyed No data, well destroyed No data, well destroyed No data, well destroyed No data, well destroyed No data, well destroyed No data, well destroyed No data, well destroyed No data, well destroyed No data, well destroyed No data, well destroyed No data, well destroyed No data, well destroyed No data, well destroyed No data, well destroyed No data, well destroyed No data, well destroyed No data, well destroyed No data, well destroyed No data, well destroyed No data, well destroyed No data, well destroyed No data, well destro ed No data, well destro ed 96.46 ND <.02 <0.002 <0.002 <0.002 <0.002 <0.002 96.46 ND Well not sampled 96.46 ND <1 <0.001 <0.001 <0.001 <0.002 NA 96.46 ND <1 <0.001 <0.001 <0.001 <0.002 NA 96.46 ND <0.5 <0.002 <0.002 <0.002 . <0.006 <0.002 96.46 ND Well not sampled 96.46 17.19 79.27 Data Not Available 4,297.91 18.14 4,279.n <0.5 <0.002 <0.002 <0.002 <0.006 <0.002 4,297.91 19.30 4,278.61 Measured Water Levels Only; Well Not Sampled 4,297.91 17.30 4,280.61 Measured Water Levels Only; Well Not Sampled 4,297.91 18.30 4,279.60 Measured Water Levels Only; Well Not Sampled 4,297.91 17.28 4,280.63 Measured Water Levels Only; Well Not Sampled 4,297.91 18.32 4,279.59 Measured Water Levels Only; Well Not Sampled 4,297.91 19.08 4,278.83 Measured Water Levels Only; Well Not Sampled 4,297.91 20.93 4,276.98 Measured Water Levels Only; Well Not Sampled 4,297.91 NM Well Not Sampled 4,297.91 21.15 4,276.76 Measured Water Levels Only; Well Not Sampled NA NA NA NA <0.002 <0:002 NA NA NA NA 4,297.91 22.01 4,275.90 Measured Water Levels Onl Not re resentative of a uifer conditions , Well not Sam led 97.31 ND <.02 <0.002 <0.002 <0.002 <0.002 <0.002 <0.002 97.31 NO Well not sampled 97.31 ND <1 <0.001 <0.001 <0.001 <0.002 NA NA 97.31 NO <1 <0.001 <0.001 <0.001 <0.002 NA NA 97.31 ND <.05 <0.002 <0.002 <0.002 <0.006 <0.002 NA 97.31 ND Well not sampled 97.31 18.04 79.27 Data Not Available 4,298.70 18.97 4,279.73 <.05 <0.002· <0.002 <0.002 <0.006 <0.002 NA 4,298.70 20.25 4,278.45 Measured Water Levels Only; Well Not Sampled 4,298.70 18.29 4,280.41 <.05 <0.002 <0.002 <0.002 <0.006 <0.002 NA 4,298.70 19.18 4,279.52 <.05 <0.002 <0.002 <0.002 <0.006 <0.002 NA 4,298.70 18.19 4,280.51 <.05 <0.002 <0.002 <0.002 <0.006 <0.002 NA 4,298.70 19.17 4,279.53 <.05 <0.002 <0.002 <0.002 <0.006 <0.002 NA 4,298.70 19.60 4,279.10 · <.05 <0.002 <0.002 <0.002 <0.006 <0.002 NA 4,298.70 21.46 4,2n.24 <.05 <0.002 <0.002 <0.002 <0.006 <0.002 <0.002 4,298.70 21.98 4,276.72 <.05 <0.002 <0.002 <0.002 <0.006 <0.002 <0.002 4,298.70 21.88 4,276.82 Measured Water Levels Only; Well Not Sampled 4,298.70 22.57 4,276.13 <.05 <0.002 <0.002 <0.002 • <0.006 <0.002 <0.002 UDAS/75138.005/SLC7L 135 Page 5of7 May 9, 2007 Copyright 2007 Kleinfelder MW-18 10/26/90 CTC 05/20/91 CTC 02/26/92 CTC 08/28/92 CTC 01/08/93 CESI 04/07/93 CESI 11/17/93 CESI 01/07/94 EWP 03/30/94 .EWP 07/20/94 EWP 02/15/95 EWP 09/19/95 EWP 01/03/96 EWP 07/01/96 EWP 07/29/97 EWP 06/25/98 EWP 08/26/98 EWP 05/12/99 EWP MW-19 10/26/90 CTC 05/20/91 CTC 02/26/92 CTC 08/28/92 CTC 01,US/93 CESI 04/07193 CESI 11/17/93 CESI 01/07194 EWP 03/30/94 EWP 07/20/94 EWP 02/15/95 EWP 09/19/95 EWP 01/03/96 EWP 07/01/96 EWP 07/29/97 EWP 06/25198 EWP. 08/26198 EWP 05/12/99 EWP MW-20 08/28/92 CTC 01/08/93 CESI 04/07/93 CESI 11/17/93 CESI 01/07194 EWP 03/30194 EWP 07/20/94 EWP 02/15/95 EWP 09/19/95 EWP 01/03/96 EWP 07/01/96 EWP 07/29/97 EWP 06/25/98 EWP 08/26/98 EWP 05/12/99 EWP 04/22ro3 KA 10ro9/03 KA 04/20/04 KA 12/16/04 KA 04/26/05 KA 10/26/05 KA 10/13ro6 KA 04/02/07 MP MW-21 08/28/92 CTC 01/08/93 CESI 04/07/93 CESI 11/17/93 CESI 01/07/94 EWP 03/30/94 EWP 07/20194 EWP 02/15/95 EWP 09/19/95 EWP 01/03/96 EWP -07/01/96 EWP 07/29/97 EWP 06/25/98 EWP 08/26198 EWP UD�.005/SWOL 1 TableA-2 Histo�roundwater Elevation Data and Anaiytical Results - r.•� ......... ·ter Monitoring Hanksville UDOT Maintenance Station m .. 97.84 ND <.02 <0.002 <0.002 <0.002 <0.002 <0.002 97.84 ND Well not sampled 97.84 ND <1 <0.001 <0.001 <0.001 <0.002 NA 97.84 ND <1 <0.001 <0.001 <0.001 <0.002 NA 97.84 . ND <0.5 <0.002 <0.002 <0.002 <0.006 <0.002 97.84 ND Well not sampled 97.84 18.04 78.90 Data Not Available 4,299.21 19.78 4,279.43 <0.5 <0.002 <0.002 <0.002 <0.006 <0.002 4,299.21 21.03 4,278.18 Measured Water Levels Only, Wen Not Sampled 4,299.21 19.29 4,279.92 Measured Water Levels Only, Well Not Sampled 4,299.21 20.04 4,279.17 Measured Water Levels Only, Well Not Sampled 4,299.21 19.03 4,280.18 Measured Water Levels Only, Well Not Sampled 4,299.21 19.96 4,279.25 Measured Water Levels Only, Well Not Sampled 4,299.21 19.98 4,279.23 Measured Water Levels Only, Well Not Sampled 4,299.21 22.11 4,277.10 Measured Water Levels Only, Well Not Sampled 4,299.21 NM Well Not Sampled 4,299.21 22.20 4,277.01 Measured Water Levels Only, Well Not Sampled <0.002 NA NA NA NA 4,299.21 23.84 4,275.37 Measured Water Levels Onl Not re resentative of a uifer conditions , Well not Sam, led 99.25 ND <.02 <0.002 <0.002 <0.002 <0.002 <0.002 <0.002 99.25 ND Well not sampled 99.25 ND <1 <0.001. <0.001 <0.001 <0.002 NA NA 99.25 ND <1 <0.001 <0.001 <0.001 <0.002 NA NA 99.25 ND <0.5 <0.002 <0.002 <0.002 <0.006 <0.002 NA 99.25 ND Well not sampled 99.25 20.29 78.96 Data Not Available 4,298.09 19.71 4,278.38 <0.5 <0.002 <0.002 <0.002 <0.002 <0.002 NA 4,298.09 20.83 4,277.26 Measured Water Levels Only; Well Not Sampled 4,298.09 19.45 4,278.64 I Measured Water Levels Only; Well Not Sampled 4,298.09 19.98 4,278.11 I Measured Water Levels Only; Well Not Sampled 4,298.09 19.15 4,278.94' Measured Water Levels Only; Wen Not Sampled 4,298.09 19.84 4,278.25 Measured Water Levels Only; Well Not Sampled 4,298.09 Well not located 4,298.09 22.01 4,276.08 Measured Water Levels Only; Well Not Sampled 4,298.09 NM Well Not Sampled 4,298.09 22.22 4,275.87 Measured Water Levels Only; Well Not Sampled 4,298.09 DRY D Well 97.55 ND 6;8 8.47 0.76 0.85 0.295 NA NA 97.55 ND 20 9.66 0.408 1.24 0.596 0.149 NA 97.55 ND 3.6 0.457 0.111 0.19 0.0791 0.0434 NA 97.55 19.46 78.09 Data Not Available 4,298.09 19.52 4,278.57 1.4 0.118 0.0538 0.0279 0.0146 0.0052 NA 4,298.09 21.37 4,276.72 Measured Water Levels Only; Well Not Sampled 4,298.09 ·19.92 4,278.17 2.5 0.519 0.392 0.263 0.138 0.03 NA 4,298.09 20.42 4,277.67 4.4 0.28 0.171 0.02703 0.0418 <0.002 NA 4,298.09 19.66 4,278.43 3.1 0.883 0.804 0.126· 0.287 <0.040 NA 4,298.09 20.48 4,277.61 1.1 0.47 0.245 0.0435 0.103 <0.002 NA 4,298.09 21.03 4,277.06 0.9 0.218 0.213 0.0634 0.112 <0.010 NA 4,298.09 22.85 4,275.24 1.5 0.247 0.235 0.112 0.19 <0.010 <0.010 4,298.09 22.94 4,275.15 <0.5 0.053 0.0597 0.0365 0.0578 0.002 <0.002 4,298.09 23.01 4,275.08 Measured Water Levels Only; Well Not Sampled 4,298.09 23.53 4,274.56 5.8 0.161 0.183 0.317 0.196 0.0315 <10 4,298.09 27.90 4,270.19 2.415.8* 0.0206 <0.005 0.256 <0.015 0.862 <0.005 4,298.09 24.93 4,273.16 Measured Water Levels Only; Well Not Sampled 4,298.09 24.44 4,273.65 0.83/3.18 0.002 0.005 0.079 0.119 0.002 <0.002 4,298.09 NA Well Not Acessible Due to Asphalt Covering 4,298.09 25.58 4,272.51 <0.5/<0.5 <0.002 <0.002 0.045 0.055 <0.002 <0.002 4,298.09 NM Well Not Sampled 4,298.09 26.05 4,272.04 <0.5/0.15 .<0.0010 <0.0050 0.0032 0.01 <0.0050 <0.0010 4,298.09 25.46 4,272.63 0.25 <0.0010 <0.0050 0.046 0.015 0.024 <0.0010 97.72 ND <1 0.0038 <0.001 <0.001 <0.002 NA NA 97.72 ND <0.5 <0.002 <0.002 <0.002 <0.006 <0.002 NA 97.72 ND 0.71 <0.002 <0.002 <0.002 <0.006 <0.002 NA 97.72 20.04 77.68 Data Not Available 4,299.12 20.86 4,278.26 <0.5 <0.002 <0.002 <0.002 <0.006 <0.002 NA 4,299.12 21.71 4,277.41 Measured Water Levels Only; Well Not Sampled 4,299.12 20.48 4,278.64 Measured Water Levels Only; Well Not Sampled 4,299.12 20.90 4,278.22 Measured Water Levels Only; Well Not Sampled 4,299.12 20.19 4,278.93 Measured Water Levels Only; Well Not Sampled 4,299.12 20.79 4,278.33 Measured Water Levels Only; Well Not Sampled 4,299.12 21.40 4,277.72 Measured Water Levels Only; Well Not Sampled 4,299.12 23.12 4,276.00 Measured Water Levels Only; Well Not Sampled 4,299.12 NM Measured Water Levels Only; Well Not Sampled 4,299.12 23.33 4,275.79 Measured Water Levels Only; Well Not Sampled ,299.12 23.79 4,275.33 a��7ed Water Levels Onl Not re resentative of aquifer condition �ell iOOSampled 4,295.34 4,275.42 10/13/06 4,298.47 1.34 5.7 0.543 0.204 5.8 0.95 0:0444 0.327 0.0132 Utah Department of Transportation Maintenance Station No. 332 Project No. 2381400522 Soil and Groundwater Sampling Report Appendix B Soil Boring Logs Sheet 1 of 4 Logged By: Rylie Burke Diameter of Borehole: Drilling Company: Pacific West Sampler Type: Macrocore We l l Ma t e r i a l Pa c k Ma t e r i a l 0'-5.5' 0 50% (0-5') Brown fine silty sand w/ 0.5"-1" gravel dry 1 5.5'-7.8' 0 70% (5-10')Alternating layers of brown fine silty sand and silty clay (approx. 3" thick) w/ minor 0.25" angular gravelsdry 7.8'-11' 0 70% (10-15') Brown clayey silt w/ 0.5" angular gravels dry 11'-12' 0 Alternating layers of brown clayey silt and brown fine silty sand dry 12'-14.5' 0 Tan fine silty sand dry 14.5'-14.9' 0 Dark brown silty clay dry 14.9'-16.5' 0 60% (15-20') Brown fine to medium silty sand w/ 0.25" sub-angular gravels dry 16.5'-17.2' 0 Brown fine clayey sand dry 16.5'-17.2' 0 Brown fine clayey sand dry 18 17.2'-19' 0 Tan fine to medium sand with 0.15" sub-angular gravels dry 20 19'-21.5' 0 40% (20-25') Tan/orange fine silty sand dry 21.5'-23' 0 Gray fine silty sand w/ 0.25" sub-rounded gravels slightly moist 23'-25' 0 Dark gray clayey sand w/ reddish vein at 23' very moist 25'-26' 0 40% (25-30') Reddish gray medium silty sand w/ 0.25" sub-angular gravels very moist 26'-26.5' 0 Reddish gray fine clayey sand wet 26.5-27.5' 0 Gray fine to medium silty sand wet 27.5'-28' 0 Dark grey/black clayey fine sand w/ 0.15" sub-angular gravels wet 28'-32.5' 0 Gray medium to large silty sand wet 32.5'-35' 0% (32.5-35') Total Depth = 35 feet 35 Start Time: 0720 WELL Finish Time: 0800 North: Surf. Elev: Log of: SB-101 East: Casing Elev: Notes: No odors detected or PID hits. Samples collected for TPH-DRO, TPH-GRO, MBTEXN: SB-101 (9.5'-10.5') @ 0805 SB-101 (31.5'-32.5') @ 0825 SB-101 converted to MW-101 immediately following boring. well total depth = 35 ft and completed with 15 ft of screen from 35'-20'. MW-101 developed on 3/6/24 @ 14:20 by purging approx. 7 gal of water with bailer. Approximate Groundwater Elev.: 25 ft Total Depth: 35 ft PI D Project: Hanksville UDOT Station #332 Drilling Method: Direct PushDrill Rig Type: Geoprobe- 72822DT Driller's Name: Justin Heath Project Location: Hanksville, UT Project Number: 2381400522 LITHOLOGIC DESCRIPTION De p t h , F e e t Date(s) Drilled: 2-15-24 Pe r c e n t Re c o v e r y REMARKS/ OTHER TESTS De p t h , F e e t Be n t o n i t e C h i p s 10 / 2 0 s i l i c a s a n d 0. 0 1 0 - i n c h s l o t t e d w e l l sc r e e n 2- i n c h S C H 4 0 P V C ce m e n t Sheet 2 of 4 Logged By: Rylie Burke Diameter of Borehole: Drilling Company: Pacific West Sampler Type: Macrocore We l l Ma t e r i a l Pa c k Ma t e r i a l 0'-0.2' 0 30% (0-5') Brown fine silty sand dry 1 0'-0.5' 0 Brown fine silty clay dry 0.5'-4.3' 0 Brown fine silty sand dry 4.3'-6.4' 0 Brown clayey silt dry 6.4'-8' 0 60% (5-10') Alternating layers of brown clayey silt and brown fine silty sand dry 8'-9' 0 Brown fine silty sand with interbedded reddish silty fine sand at 8.0' and 8.7' dry 9'-9.5' 0 Tan silty sand dry 9.5'-10.5' 0 Dark brown/black silty clay dry 10.5'-11' 0 60% (10-15') Tan fine silty sand dry 11'-14' 0 Dark brown silty clay w/ 2" fine sand lense at 12-12.5' dry 14'-15' 0 Brown fine clayey sand dry 15'-16.7' 0 50% (15-20') Brown/reddish fine silty sand w/ minor 0.05" to 0.5" sub-angular gravels dry 16.7'-17' 0 Dark brown silty clay dry 17'-20' 0 Tan fine clayey sand w/ 0.15" to 0.5" sub-angular gravels dry 18 20 20'-22' 0 50% (20-25') Same as above dry 22'-23.5' 0 Dark brown silty clay dry 23.5'-25' 0 Reddish brown fine clayey sand w/ 0.15" to 0.25" sub-angular gravels slightly moist 25'-26.5' 0 50% (25-30') Gray medium silty sand w/ 0.15" sub-rounded gravels very moist 26.5'- 28.5' 0 Gray medium sandy clay wet 28.5'-30' 0 Gray silty clay wet 30'-33.5' 0 50% (30-35') Gray fine to medium silty sand wet 33.5'-35' 0 Gray medium to large sand and 0.15" sub-rounded gravels wet Total Depth = 35 feet 35 Notes: No odors detected or PID hits. Samples collected for TPH-DRO, TPH-GRO, MBTEXN: SB-102 (9.5'-10.5') @ 1315 SB-102 (34'-35') @ 1335 SB-102 converted to MW-102 immediately following boring. well total depth = 35 ft and completed with 15 ft of screen from 20'-35'. MW-102 developed on 3/6/24 @ 15:40 by purging approx. 5.25 gal of water with bailer. Driller's Name: Justin Heath Total Depth: 35 ft De p t h , F e e t PI D Pe r c e n t Re c o v e r y LITHOLOGIC DESCRIPTION REMARKS/ OTHER TESTS WELL De p t h , F e e t Date(s) Drilled: 2-14-24 Start Time: 12:30 Drilling Method: Direct Push Finish Time: 13:00Drill Rig Type: Geoprobe- 72822DT Approximate Groundwater Elev.: 25 ft Project: Hanksville UDOT Station #332 Log of: SB-102 Project Location: Hanksville, UT North: East: Project Number: 2381400522 Surf. Elev: Casing Elev: Be n t o n i t e C h i p s 10 / 2 0 s i l i c a s a n d 0. 0 1 0 - i n c h s l o t t e d w e l l sc r e e n 2- i n c h S C H 4 0 P V C ce m e n t Sheet 3 of 4 Logged By: Rylie Burke Diameter of Borehole: Drilling Company: Pacific West Sampler Type: Macrocore We l l Ma t e r i a l Pa c k Ma t e r i a l 0'-2' 0 50% (0-5') Brown clayey silt w/ minor 0.25" to 1" sub-angular gravels dry 1 2'-2.3' 0 Gray silty clay dry 2.3'-7' 0 Alternating layers of brown fine silty sand and brown clayey silt w/ minor 0.25" sub-angular gravels dry 50% (5-10') 7'-8.5' 0 Brown clayey silt w/ 1" sub-angular gravels (1%) and interbedded veins of reddish fine silty sand dry 8.5'-11' 0 Grennish/black fine silty sand w/ 1" sub-angular gravels (3%) dry 50% (10-15') 11'-11.7' 0 Tan/orange fine silty sand w/ 1" sub-rounded clasts of calcite (1%) dry 11.7'-13' 0 Dark gray silty clay dry 13'-14.8' 0 Tan fine silty sand w/ clay lense (approx. 3" thick) at 14.5 to 14.8' dry 14.8'-20' 60% (15-20') Tan fine to medium silty sand w/ 0.15" sub-angular gravels dry 0 18 dry 20 20'-21.5' 1 (21') 50% (20-25') same as above dry 21.5'-22' 10 (22') Orange fine silty sand dry 22'-23' 11 (23') Brown clayey sand w/ 0.25" sub-angular gravels slightly moist, strong odor 23'-24.5' 50 (24') Gray silty clay slightly moist, strong odor 24.5'-26' 21 (25') Dark gray silty sand w/ 0.15" to 0.25" gravels moist 30% (25-30') 26'-28' 0 Gray silty clay wet 28'-32.5' 0 Gray medium to large silty sand wet Total Depth = 35 feet 35 Notes: PID hits from 21 to 25'. Samples collected for TPH-DRO, TPH-GRO, MBTEXN: SB-103 (9.5'-10.5') @ 1220 SB-103 (23.5'-25') @ 1205 SB-103 (31.5'-32.5') @ 1240 SB-102 converted to MW-103 immediately following boring. well total depth = 35 ft and completed with 15 ft of screen from 20'-35'. MW-102 developed on 3/6/24 @ 17:15 by purging approx. 5 gal of water with bailer. Driller's Name: Justin Heath Total Depth: 35 ft De p t h , F e e t PI D Pe r c e n t Re c o v e r y LITHOLOGIC DESCRIPTION REMARKS/ OTHER TESTS WELL De p t h , F e e t Date(s) Drilled: 2-15-24 Start Time: 10:55 Drilling Method: Direct Push Finish Time: 11:45 Drill Rig Type: Geoprobe-72822DT Approximate Groundwater Elev.: 25 ft Project: Hanksville UDOT Station #332 Log of: SB-103 Project Location: Hanksville, UT North: East: Project Number: 2381400522 Surf. Elev: Casing Elev: Be n t o n i t e C h i p s 10 / 2 0 s i l i c a s a n d 0. 0 1 0 - i n c h s l o t t e d w e l l sc r e e n 2- i n c h S C H 4 0 P V C ce m e n t Sheet 4 of 4 Logged By: Rylie Burke Diameter of Borehole: Drilling Company: Pacific West Sampler Type: Macrocore We l l Ma t e r i a l Pa c k Ma t e r i a l 0'-1.8' 0 50% (0-5') Brown fine sandy silt w/ minor 0.10" sub-angular gravels dry 1 1.8'-4.3' 0 Brown silty clay dry 4.3'-6.4' 0 60% (5-10') Brown fine silty sand dry 6.4'-7.2' 0 Dark brown silty clay dry 7.2'-11' 0 60% (10-15') Alternating layers of brown silty clay and brown fine silty sand (approx. 3" thick) dry 11'-15.3' 0 50% (15-20') Brown clayey fine sand dry 15.3'-16.7' 0 Brown/reddish fine silty sdand w/ minor 0.15" to 0.5" sub-angular gravels dry 16.7'-22' 0 70% (20-25') Tan clayey fine sand w/ 0.5" sub-angular gravels (5%) slightly moist 18 20 22'-23.5' 0 Dark brown silty clay moist 23.5'-23.8' 0 Interbedded reddish brown fine silty sand w/ 0.25" sub-angular gravels moist 23.8'-25' 0 Tan fine sand w/ 0.25" sub-rounded gravels wet 25' 0 Gray medium sand wet 25-30' 0% 30-35 0% Total Depth = 35 feet 35 Notes: No odors detected or PID hits. Samples collected for TPH-DRO, TPH-GRO, MBTEXN: SB-104 (9.5'-10.5') @ 0850 SB-104 (24'-25') @ 0925 SB-102 converted to MW-104 immediately following boring. well total depth = 35 ft and completed with 15 ft of screen from 20'-35'. MW-102 developed on 3/6/24 @ 16:25 by purging approx. 5 gal of water with bailer. Driller's Name: Justin Heath Total Depth: 35 ft De p t h , F e e t PI D Pe r c e n t Re c o v e r y LITHOLOGIC DESCRIPTION REMARKS/ OTHER TESTS WELL De p t h , F e e t Date(s) Drilled: 2-14-24 Start Time: 08:00 Drilling Method: Direct Push Finish Time: 09:25Drill Rig Type: Geoprobe- 72822DT Approximate Groundwater Elev.: 25 ft Project: Hanksville UDOT Station #332 Log of: SB-104 Project Location: Hanksville, UT North: East: Project Number: 2381400522 Surf. Elev: Casing Elev: Be n t o n i t e C h i p s 10 / 2 0 s i l i c a s a n d 0. 0 1 0 - i n c h s l o t t e d w e l l sc r e e n 2- i n c h S C H 4 0 P V C ce m e n t Utah Department of Transportation Maintenance Station No. 332 Project No. 2381400522 Soil and Groundwater Sampling Report Appendix C Field Data Sheets Groundwater Field Data Sheet Project Name:SFN Hanksville Release Project Number:2381400522 Project Manager Bryan Morse Field Personnel(s): Rylie Burke Well ID:MW-26 Date:3/7/2024 Initial Depth to Water (ft): 23.96 Well Diameter (in): 2.0 Total Depth of Well (ft): 33.33 1 Casing Volume (gal): 1.50 Method of Purging: Bailer 3 Casing Volumes (gal): 4.50 Measuring Point (TOC, etc.):Top of Casing Pump Intake Depth (feet):NA Time Volume (gal.) Cum. Volume (gal.) Temp. (°C) pH (SU) Specific Electrical Conductance (mS/cm) DO (mg/L) ORP (mV)Comments/Observations During Purging (color, sediment, odor, etc.) Stabilization Criteria ±3%±0.1 ±3%±10% or <0.5 mg/L ±10 mV 11:40 1.50 1.50 18.81 7.27 3.440 3.97 9.8 slightly turbid w/ orange tinge 12:05 4.50 4.50 19.13 5.61 3.506 2.65 -17.7 Stability Reached (Y/N):NA If No, Provide Explanation NA Final Values: 19.13 5.61 3.506 2.65 -17.7 Sample ID: MW-101 Method of Sampling: Bailer QA/QC Samples (Yes/No): No Sample Date:3/7/2024 Duplicate ID: NA Sample Collection Time:12:05 Sample Container Type(s):VOA Total Volume Purged (gal): 4.50 Preservative(s):Hydrochloric Acid Sample Depth (ft):NA Analysis/Method(s):TPH-GRO/DRO, BTEX Depth to Water After Sampling (ft): NA Instruments (Manufacturer, Model, and Serial No.): Equipment Calibrated (Y/N):Y Calibrated Within Criteria (Y/N):Y Water Quality Meter, Water Level Meter, YSI Pro Series 146100778 Calculations:Signature: Well casing volume: V= 0.16*(33.33-23.96)*(3) = 4.5 gal. Where: V = Casing Volume (gallons) Water Column = DTB-DTW (feet) Notes:Name (print): Rylie Burke QA/QC’d by: Ehud Ardon QA/QC Date:3/26/2024 𝑉={𝑊𝑎𝑡𝑒𝑟 𝐶𝑜𝑙𝑢𝑚𝑛}∗# 𝑜𝑓 𝑣𝑜𝑙𝑢𝑚𝑒𝑠 𝑒𝑣𝑎𝑐𝑢𝑎𝑡𝑒𝑑∗0.16 Groundwater Field Data Sheet Project Name:SFN Hanksville Release Project Number:2381400522 Project Manager Bryan Morse Field Personnel(s): Rylie Burke Well ID:MW-101 Date:3/7/2024 Initial Depth to Water (ft): 23.45 Well Diameter (in): 2.0 Total Depth of Well (ft): 35.10 1 Casing Volume (gal): 1.86 Method of Purging: Bailer 3 Casing Volumes (gal): 5.6 Measuring Point (TOC, etc.):Top of Casing Pump Intake Depth (feet):NA Time Volume (gal.) Cum. Volume (gal.) Temp. (°C) pH (SU) Specific Electrical Conductance (mS/cm) DO (mg/L) ORP (mV)Comments/Observations During Purging (color, sediment, odor, etc.) Stabilization Criteria ±3%±0.1 ±3%±10% or <0.5 mg/L ±10 mV 7:55 1.86 1.86 16.12 5.87 3.429 2.25 100.1 cloudy, high turbidity 8:45 5.60 5.60 15.64 7.99 3.375 2.31 4.80 Stability Reached (Y/N):NA If No, Provide Explanation NA Final Values: 15.64 7.99 3.375 2.31 4.8 Sample ID: MW-101 Method of Sampling: Bailer QA/QC Samples (Yes/No): Yes Sample Date:3/7/2024 Duplicate ID: DUP-030724 Sample Collection Time:8:45, 12:00 (DUP) Sample Container Type(s):VOA Total Volume Purged (gal): 5.60 Preservative(s):Hydrochloric Acid Sample Depth (ft):NA Analysis/Method(s):TPH-GRO/DRO, BTEX Depth to Water After Sampling (ft): NA Instruments (Manufacturer, Model, and Serial No.): Equipment Calibrated (Y/N):Y Calibrated Within Criteria (Y/N):Y Water Quality Meter, Water Level Meter, YSI Pro Series 146100778 Calculations:Signature: Well casing volume: V= 0.16*(35.10-23.45)*(3) = 5.6 gal. Where: V = Casing Volume (gallons) Water Column = DTB-DTW (feet) Notes:Name (print): Rylie Burke QA/QC’d by: Ehud Ardon QA/QC Date:3/26/2024 𝑉={𝑊𝑎𝑡𝑒𝑟 𝐶𝑜𝑙𝑢𝑚𝑛}∗# 𝑜𝑓 𝑣𝑜𝑙𝑢𝑚𝑒𝑠 𝑒𝑣𝑎𝑐𝑢𝑎𝑡𝑒𝑑∗0.16 Groundwater Field Data Sheet Project Name:SFN Hanksville Release Project Number:2381400522 Project Manager Bryan Morse Field Personnel(s): Rylie Burke Well ID:MW-102 Date:3/7/2024 Initial Depth to Water (ft): 23.90 Well Diameter (in): 2.0 Total Depth of Well (ft): 34.05 1 Casing Volume (gal): 1.62 Method of Purging: Bailer 3 Casing Volumes (gal): 4.90 Measuring Point (TOC, etc.):Top of Casing Pump Intake Depth (feet):NA Time Volume (gal.) Cum. Volume (gal.) Temp. (°C) pH (SU) Specific Electrical Conductance (mS/cm) DO (mg/L) ORP (mV)Comments/Observations During Purging (color, sediment, odor, etc.) Stabilization Criteria ±3%±0.1 ±3%±10% or <0.5 mg/L ±10 mV 9:00 1.62 1.62 18.17 10.73 3.267 5.26 -134.3 high turbidity, brownish 9:50 4.90 4.90 17.90 10.15 3.317 2.26 -164.3 Stability Reached (Y/N):NA If No, Provide Explanation NA Final Values: 17.9 10.15 3.317 2.26 -164.3 Sample ID: MW-102 Method of Sampling: Bailer QA/QC Samples (Yes/No): No Sample Date:3/7/2024 Duplicate ID: NA Sample Collection Time:9:50 Sample Container Type(s):VOA Total Volume Purged (gal): 4.90 Preservative(s):Hydrochloric Acid Sample Depth (ft):NA Analysis/Method(s):TPH-GRO/DRO, BTEX Depth to Water After Sampling (ft): NA Instruments (Manufacturer, Model, and Serial No.): Equipment Calibrated (Y/N):Y Calibrated Within Criteria (Y/N):Y Water Quality Meter, Water Level Meter, YSI Pro Series 146100778 Calculations:Signature: Well casing volume: V= 0.16*(34.05-23.90)*(3) = 4.9 gal. Where: V = Casing Volume (gallons) Water Column = DTB-DTW (feet) Notes:Name (print): Rylie Burke QA/QC’d by: Ehud Ardon QA/QC Date:3/26/2024 𝑉={𝑊𝑎𝑡𝑒𝑟 𝐶𝑜𝑙𝑢𝑚𝑛}∗# 𝑜𝑓 𝑣𝑜𝑙𝑢𝑚𝑒𝑠 𝑒𝑣𝑎𝑐𝑢𝑎𝑡𝑒𝑑∗0.16 Groundwater Field Data Sheet Project Name:SFN Hanksville Release Project Number:2381400522 Project Manager Bryan Morse Field Personnel(s): Rylie Burke Well ID:MW-103 Date:3/7/2024 Initial Depth to Water (ft): 23.92 Well Diameter (in): 2.0 Total Depth of Well (ft): 35.03 1 Casing Volume (gal): 1.77 Method of Purging: Bailer 3 Casing Volumes (gal): 5.30 Measuring Point (TOC, etc.):Top of Casing Pump Intake Depth (feet):NA Time Volume (gal.) Cum. Volume (gal.) Temp. (°C) pH (SU) Specific Electrical Conductance (mS/cm) DO (mg/L) ORP (mV)Comments/Observations During Purging (color, sediment, odor, etc.) Stabilization Criteria ±3%±0.1 ±3%±10% or <0.5 mg/L ±10 mV 10:35 1.77 1.77 18.69 7.08 3.365 4.40 -88.7 high turbidity, brownish 10:42 5.30 5.30 18.22 5.12 3.385 1.03 -99.00 Stability Reached (Y/N):NA If No, Provide Explanation NA Final Values: 18.22 5.12 3.385 1.03 -99 Sample ID: MW-103 Method of Sampling: Bailer QA/QC Samples (Yes/No): No Sample Date:3/7/2024 Duplicate ID: NA Sample Collection Time:10:42 Sample Container Type(s):VOA Total Volume Purged (gal): 5.30 Preservative(s):Hydrochloric Acid Sample Depth (ft):NA Analysis/Method(s):TPH-GRO/DRO, BTEX Depth to Water After Sampling (ft): NA Instruments (Manufacturer, Model, and Serial No.): Equipment Calibrated (Y/N):Y Calibrated Within Criteria (Y/N):Y Water Quality Meter, Water Level Meter, YSI Pro Series 146100778 Calculations:Signature: Well casing volume: V= 0.16*(35.10-23.45)*(3) = 5.6 gal. Where: V = Casing Volume (gallons) Water Column = DTB-DTW (feet) Notes:Name (print): Rylie Burke QA/QC’d by: Ehud Ardon QA/QC Date:3/26/2024 𝑉={𝑊𝑎𝑡𝑒𝑟 𝐶𝑜𝑙𝑢𝑚𝑛}∗# 𝑜𝑓 𝑣𝑜𝑙𝑢𝑚𝑒𝑠 𝑒𝑣𝑎𝑐𝑢𝑎𝑡𝑒𝑑∗0.16 Groundwater Field Data Sheet Project Name:SFN Hanksville Release Project Number:2381400522 Project Manager Bryan Morse Field Personnel(s): Rylie Burke Well ID:MW-104 Date:3/7/2024 Initial Depth to Water (ft): 24.03 Well Diameter (in): 2.0 Total Depth of Well (ft): 35.64 1 Casing Volume (gal): 1.86 Method of Purging: Bailer 3 Casing Volumes (gal): 5.60 Measuring Point (TOC, etc.):Top of Casing Pump Intake Depth (feet):NA Time Volume (gal.) Cum. Volume (gal.) Temp. (°C) pH (SU) Specific Electrical Conductance (mS/cm) DO (mg/L) ORP (mV)Comments/Observations During Purging (color, sediment, odor, etc.) Stabilization Criteria ±3%±0.1 ±3%±10% or <0.5 mg/L ±10 mV 11:10 1.86 1.86 17.62 4.89 3.241 3.51 -125.9 cloudy, high turbidity 11:20 5.60 5.60 18.27 4.85 3.318 0.26 -153.0 Stability Reached (Y/N):NA If No, Provide Explanation NA Final Values: 18.27 4.85 3.318 0.26 -153 Sample ID: MW-104 Method of Sampling: Bailer QA/QC Samples (Yes/No): No Sample Date:3/7/2024 Duplicate ID: NA Sample Collection Time:11:20 Sample Container Type(s):VOA Total Volume Purged (gal): 5.60 Preservative(s):Hydrochloric Acid Sample Depth (ft):NA Analysis/Method(s):TPH-GRO/DRO, BTEX Depth to Water After Sampling (ft): NA Instruments (Manufacturer, Model, and Serial No.): Equipment Calibrated (Y/N):Y Calibrated Within Criteria (Y/N):Y Water Quality Meter, Water Level Meter, YSI Pro Series 146100778 Calculations:Signature: Well casing volume: V= 0.16*(35.64-24.03)*(3) = 5.6 gal. Where: V = Casing Volume (gallons) Water Column = DTB-DTW (feet) Notes:Name (print): Rylie Burke QA/QC’d by: Ehud Ardon QA/QC Date:3/26/2024 𝑉={𝑊𝑎𝑡𝑒𝑟 𝐶𝑜𝑙𝑢𝑚𝑛}∗# 𝑜𝑓 𝑣𝑜𝑙𝑢𝑚𝑒𝑠 𝑒𝑣𝑎𝑐𝑢𝑎𝑡𝑒𝑑∗0.16 Utah Department of Transportation Maintenance Station No. 332 Project No. 2381400522 Soil and Groundwater Sampling Report Appendix D Laboratory Analytical Reports ANALYTICAL REPORT February 28, 2024 WSP (Formely Wood E&I)-UT Sample Delivery Group:L1706989 Samples Received:02/17/2024 Project Number:2381400522 Description:Hanksville UDOT Station #332 Site:HANKSVILLE VDOT Report To:Corey Buchanan 10876 South River Front Parkway South Jordan, UT 84095 Entire Report Reviewed By: February 28, 2024 [Preliminary Report] Daphne Richards Project Manager Results relate only to the items tested or calibrated and are reported as rounded values. This test report shall not be reproduced, except in full, without written approval of the laboratory. Where applicable, sampling conducted by Pace Analytical National is performed per guidance provided in laboratory standard operating procedures ENV-SOP-MTJL-0067 and ENV-SOP-MTJL-0068. Where sampling conducted by the customer, results relate to the accuracy of the information provided, and as the samples are received. Pace Analytical National 12065 Lebanon Rd Mount Juliet, TN 37122 615-758-5858 800-767-5859 www.pacenational.com 1 Cp 2 Tc 3 Ss 4 Cn 5 Sr 6 Qc 7 Gl 8 Al 9 Sc ACCOUNT:PROJECT:SDG:DATE/TIME:PAGE: WSP (Formely Wood E&I)-UT 2381400522 L1706989 02/28/24 07:47 1 of 32 February 28, 2024 Daphne Richards Project Manager ACCOUNT:PROJECT:SDG:DATE/TIME:PAGE: WSP (Formely Wood E&I)-UT 2381400522 L1706989 02/28/24 09:03 1 of 32 TABLE OF CONTENTS Cp: Cover Page 1 Tc: Table of Contents 2 Ss: Sample Summary 3 Cn: Case Narrative 5 Sr: Sample Results 6 SB-104 (9.5-10.5) L1706989-01 6 SB-104 (24-25) L1706989-02 7 SB-102 (9.5-10.5) L1706989-03 8 SB-102 (34-35) L1706989-04 9 SB-101 (9.5-10.5) L1706989-05 10 SB-101 (31.5-32.5) L1706989-06 11 SB-103 (23.5-25) L1706989-07 12 SB-103 (9.5-10.5) L1706989-08 13 SB-103 (31.5-32.5) L1706989-09 14 DUP-021524 L1706989-10 15 WSC-021524 L1706989-11 16 WSC-021524 L1706989-12 17 TRIP BLANK L1706989-13 18 Qc: Quality Control Summary 19 Total Solids by Method 2540 G-2011 19 Metals (ICP) by Method 6010B 21 Metals (ICP) by Method 6010D 22 Volatile Organic Compounds (GC/MS) by Method 8260B/8260B/OA1 23 Semi-Volatile Organic Compounds (GC) by Method 8015 27 Gl: Glossary of Terms 29 Al: Accreditations & Locations 30 Sc: Sample Chain of Custody 31 1 Cp 2 Tc 3 Ss 4 Cn 5 Sr 6 Qc 7 Gl 8 Al 9 Sc ACCOUNT:PROJECT:SDG:DATE/TIME:PAGE: WSP (Formely Wood E&I)-UT 2381400522 L1706989 02/28/24 07:47 2 of 32 ACCOUNT:PROJECT:SDG:DATE/TIME:PAGE: WSP (Formely Wood E&I)-UT 2381400522 L1706989 02/28/24 09:03 2 of 32 SAMPLE SUMMARY Collected by Collected date/time Received date/time SB-104 (9.5-10.5) L1706989-01 Solid Rylie Burke 02/14/24 08:50 02/17/24 09:00 Method Batch Dilution Preparation Analysis Analyst Location date/time date/time Total Solids by Method 2540 G-2011 WG2229033 1 02/20/24 15:37 02/20/24 15:53 CMB Mt. Juliet, TN Volatile Organic Compounds (GC/MS) by Method 8260B/8260B/OA1 WG2230816 1 02/14/24 08:50 02/21/24 12:42 ADM Mt. Juliet, TN Semi-Volatile Organic Compounds (GC) by Method 8015 WG2228726 1 02/19/24 17:35 02/19/24 23:51 JAS Mt. Juliet, TN Collected by Collected date/time Received date/time SB-104 (24-25) L1706989-02 Solid Rylie Burke 02/14/24 09:25 02/17/24 09:00 Method Batch Dilution Preparation Analysis Analyst Location date/time date/time Total Solids by Method 2540 G-2011 WG2229033 1 02/20/24 15:37 02/20/24 15:53 CMB Mt. Juliet, TN Volatile Organic Compounds (GC/MS) by Method 8260B WG2231394 1 02/14/24 09:25 02/22/24 12:27 JHH Mt. Juliet, TN Volatile Organic Compounds (GC/MS) by Method 8260B/8260B/OA1 WG2230816 1 02/14/24 09:25 02/21/24 13:04 ADM Mt. Juliet, TN Semi-Volatile Organic Compounds (GC) by Method 8015 WG2229606 1 02/20/24 15:33 02/21/24 10:15 JAS Mt. Juliet, TN Collected by Collected date/time Received date/time SB-102 (9.5-10.5) L1706989-03 Solid Rylie Burke 02/14/24 13:15 02/17/24 09:00 Method Batch Dilution Preparation Analysis Analyst Location date/time date/time Total Solids by Method 2540 G-2011 WG2229033 1 02/20/24 15:37 02/20/24 15:53 CMB Mt. Juliet, TN Volatile Organic Compounds (GC/MS) by Method 8260B WG2231394 1 02/14/24 13:15 02/22/24 12:48 JHH Mt. Juliet, TN Volatile Organic Compounds (GC/MS) by Method 8260B/8260B/OA1 WG2230816 1 02/14/24 13:15 02/21/24 13:26 ADM Mt. Juliet, TN Semi-Volatile Organic Compounds (GC) by Method 8015 WG2229606 5 02/20/24 15:33 02/21/24 11:21 JAS Mt. Juliet, TN Collected by Collected date/time Received date/time SB-102 (34-35) L1706989-04 Solid Rylie Burke 02/14/24 13:35 02/17/24 09:00 Method Batch Dilution Preparation Analysis Analyst Location date/time date/time Total Solids by Method 2540 G-2011 WG2229033 1 02/20/24 15:37 02/20/24 15:53 CMB Mt. Juliet, TN Volatile Organic Compounds (GC/MS) by Method 8260B/8260B/OA1 WG2230816 1 02/14/24 13:35 02/21/24 13:48 ADM Mt. Juliet, TN Semi-Volatile Organic Compounds (GC) by Method 8015 WG2229606 1 02/20/24 15:33 02/21/24 10:03 JAS Mt. Juliet, TN Collected by Collected date/time Received date/time SB-101 (9.5-10.5) L1706989-05 Solid Rylie Burke 02/15/24 08:05 02/17/24 09:00 Method Batch Dilution Preparation Analysis Analyst Location date/time date/time Total Solids by Method 2540 G-2011 WG2229034 1 02/20/24 15:12 02/20/24 15:24 CMB Mt. Juliet, TN Volatile Organic Compounds (GC/MS) by Method 8260B/8260B/OA1 WG2231394 1 02/15/24 08:05 02/22/24 13:10 JHH Mt. Juliet, TN Semi-Volatile Organic Compounds (GC) by Method 8015 WG2229606 1 02/20/24 15:33 02/21/24 10:40 JAS Mt. Juliet, TN Collected by Collected date/time Received date/time SB-101 (31.5-32.5) L1706989-06 Solid Rylie Burke 02/15/24 08:25 02/17/24 09:00 Method Batch Dilution Preparation Analysis Analyst Location date/time date/time Total Solids by Method 2540 G-2011 WG2229034 1 02/20/24 15:12 02/20/24 15:24 CMB Mt. Juliet, TN Volatile Organic Compounds (GC/MS) by Method 8260B/8260B/OA1 WG2231394 1 02/15/24 08:25 02/22/24 13:31 JHH Mt. Juliet, TN Semi-Volatile Organic Compounds (GC) by Method 8015 WG2229606 1 02/20/24 15:33 02/21/24 09:51 JAS 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: WSP (Formely Wood E&I)-UT 2381400522 L1706989 02/28/24 07:47 3 of 32 ACCOUNT:PROJECT:SDG:DATE/TIME:PAGE: WSP (Formely Wood E&I)-UT 2381400522 L1706989 02/28/24 09:03 3 of 32 SAMPLE SUMMARY Collected by Collected date/time Received date/time SB-103 (23.5-25) L1706989-07 Solid Rylie Burke 02/15/24 12:05 02/17/24 09:00 Method Batch Dilution Preparation Analysis Analyst Location date/time date/time Total Solids by Method 2540 G-2011 WG2229034 1 02/20/24 15:12 02/20/24 15:24 CMB Mt. Juliet, TN Volatile Organic Compounds (GC/MS) by Method 8260B/8260B/OA1 WG2231394 1 02/15/24 12:05 02/22/24 13:52 JHH Mt. Juliet, TN Semi-Volatile Organic Compounds (GC) by Method 8015 WG2229606 1 02/20/24 15:33 02/21/24 10:15 JAS Mt. Juliet, TN Collected by Collected date/time Received date/time SB-103 (9.5-10.5) L1706989-08 Solid Rylie Burke 02/15/24 12:20 02/17/24 09:00 Method Batch Dilution Preparation Analysis Analyst Location date/time date/time Total Solids by Method 2540 G-2011 WG2229034 1 02/20/24 15:12 02/20/24 15:24 CMB Mt. Juliet, TN Volatile Organic Compounds (GC/MS) by Method 8260B/8260B/OA1 WG2230816 1 02/15/24 12:20 02/21/24 15:17 ADM Mt. Juliet, TN Semi-Volatile Organic Compounds (GC) by Method 8015 WG2229606 2 02/20/24 15:33 02/21/24 11:21 JAS Mt. Juliet, TN Collected by Collected date/time Received date/time SB-103 (31.5-32.5) L1706989-09 Solid Rylie Burke 02/15/24 12:40 02/17/24 09:00 Method Batch Dilution Preparation Analysis Analyst Location date/time date/time Total Solids by Method 2540 G-2011 WG2229034 1 02/20/24 15:12 02/20/24 15:24 CMB Mt. Juliet, TN Volatile Organic Compounds (GC/MS) by Method 8260B/8260B/OA1 WG2231394 1 02/15/24 12:40 02/22/24 14:13 JHH Mt. Juliet, TN Semi-Volatile Organic Compounds (GC) by Method 8015 WG2229606 1 02/20/24 15:33 02/21/24 10:28 JAS Mt. Juliet, TN Collected by Collected date/time Received date/time DUP-021524 L1706989-10 Solid Rylie Burke 02/15/24 12:00 02/17/24 09:00 Method Batch Dilution Preparation Analysis Analyst Location date/time date/time Total Solids by Method 2540 G-2011 WG2229034 1 02/20/24 15:12 02/20/24 15:24 CMB Mt. Juliet, TN Volatile Organic Compounds (GC/MS) by Method 8260B/8260B/OA1 WG2231391 25 02/15/24 12:00 02/23/24 16:32 JAH Mt. Juliet, TN Semi-Volatile Organic Compounds (GC) by Method 8015 WG2229606 1 02/20/24 15:33 02/21/24 10:28 JAS Mt. Juliet, TN Collected by Collected date/time Received date/time WSC-021524 L1706989-11 Solid Rylie Burke 02/15/24 12:50 02/17/24 09:00 Method Batch Dilution Preparation Analysis Analyst Location date/time date/time Total Solids by Method 2540 G-2011 WG2229034 1 02/20/24 15:12 02/20/24 15:24 CMB Mt. Juliet, TN Metals (ICP) by Method 6010D WG2234747 1 02/27/24 09:13 02/27/24 17:52 ZSA Mt. Juliet, TN Collected by Collected date/time Received date/time WSC-021524 L1706989-12 Waste Rylie Burke 02/15/24 12:50 02/17/24 09:00 Method Batch Dilution Preparation Analysis Analyst Location date/time date/time Preparation by Method 1311 WG2229020 1 02/20/24 10:16 02/20/24 10:16 WC Mt. Juliet, TN Metals (ICP) by Method 6010B WG2230840 1 02/21/24 12:50 02/21/24 16:31 ZSA Mt. Juliet, TN Collected by Collected date/time Received date/time TRIP BLANK L1706989-13 GW Rylie Burke 02/15/24 13:00 02/17/24 09:00 Method Batch Dilution Preparation Analysis Analyst Location date/time date/time Volatile Organic Compounds (GC/MS) by Method 8260B/8260B/OA1 WG2233474 1 02/24/24 16:58 02/24/24 16:58 ADM 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: WSP (Formely Wood E&I)-UT 2381400522 L1706989 02/28/24 07:47 4 of 32 ACCOUNT:PROJECT:SDG:DATE/TIME:PAGE: WSP (Formely Wood E&I)-UT 2381400522 L1706989 02/28/24 09:03 4 of 32 CASE NARRATIVE All sample aliquots were received at the correct temperature, in the proper containers, with the appropriate preservatives, and within method specified holding times, unless qualified or notated within the report. Where applicable, all MDL (LOD) and RDL (LOQ) values reported for environmental samples have been corrected for the dilution factor used in the analysis. All Method and Batch Quality Control are within established criteria except where addressed in this case narrative, a non-conformance form or properly qualified within the sample results. By my digital signature below, I affirm to the best of my knowledge, all problems/anomalies observed by the laboratory as having the potential to affect the quality of the data have been identified by the laboratory, and no information or data have been knowingly withheld that would affect the quality of the data. [Preliminary Report] Daphne Richards Project Manager 1 Cp 2 Tc 3 Ss 4 Cn 5 Sr 6 Qc 7 Gl 8 Al 9 Sc ACCOUNT:PROJECT:SDG:DATE/TIME:PAGE: WSP (Formely Wood E&I)-UT 2381400522 L1706989 02/28/24 07:47 5 of 32 Daphne Richards Project Manager ACCOUNT:PROJECT:SDG:DATE/TIME:PAGE: WSP (Formely Wood E&I)-UT 2381400522 L1706989 02/28/24 09:03 5 of 32 SAMPLE RESULTS - 01 L1706989 SB-104 (9.5-10.5) Collected date/time: 02/14/24 08:50 Total Solids by Method 2540 G-2011 Result Qualifier Dilution Analysis Batch Analyte %date / time Total Solids 89.5 1 02/20/2024 15:53 WG2229033 Volatile Organic Compounds (GC/MS) by Method 8260B/8260B/OA1 Result Qualifier MDL RDL Dilution Analysis Batch Analyte mg/kg mg/kg mg/kg date / time TPH (GC/MS) Low Fraction 0.534 B 0.183 0.500 1 02/21/2024 12:42 WG2230816 Benzene 0.00413 0.000375 0.00100 1 02/21/2024 12:42 WG2230816 1,2-Dichloroethane U 0.000450 0.00100 1 02/21/2024 12:42 WG2230816 1,2-Dibromoethane U 0.000250 0.00100 1 02/21/2024 12:42 WG2230816 Ethylbenzene 0.00317 0.000300 0.00100 1 02/21/2024 12:42 WG2230816 Methyl tert-butyl ether U 0.000350 0.00100 1 02/21/2024 12:42 WG2230816 Naphthalene U 0.00498 0.00500 1 02/21/2024 12:42 WG2230816 Toluene 0.00651 0.00123 0.00500 1 02/21/2024 12:42 WG2230816 Xylenes, Total 0.00269 J 0.000500 0.00300 1 02/21/2024 12:42 WG2230816 (S) Toluene-d8 113 75.0-131 02/21/2024 12:42 WG2230816 (S) 4-Bromofluorobenzene 105 67.0-138 02/21/2024 12:42 WG2230816 (S) 1,2-Dichloroethane-d4 119 70.0-130 02/21/2024 12:42 WG2230816 Semi-Volatile Organic Compounds (GC) by Method 8015 Result Qualifier MDL RDL Dilution Analysis Batch Analyte mg/kg mg/kg mg/kg date / time TPH (GC/FID) High Fraction 6.12 0.769 4.00 1 02/19/2024 23:51 WG2228726 (S) o-Terphenyl 41.2 18.0-148 02/19/2024 23:51 WG2228726 1 Cp 2 Tc 3 Ss 4 Cn 5 Sr 6 Qc 7 Gl 8 Al 9 Sc ACCOUNT:PROJECT:SDG:DATE/TIME:PAGE: WSP (Formely Wood E&I)-UT 2381400522 L1706989 02/28/24 07:47 6 of 32 ACCOUNT:PROJECT:SDG:DATE/TIME:PAGE: WSP (Formely Wood E&I)-UT 2381400522 L1706989 02/28/24 09:03 6 of 32 SAMPLE RESULTS - 02 L1706989 SB-104 (24-25) Collected date/time: 02/14/24 09:25 Total Solids by Method 2540 G-2011 Result Qualifier Dilution Analysis Batch Analyte %date / time Total Solids 88.7 1 02/20/2024 15:53 WG2229033 Volatile Organic Compounds (GC/MS) by Method 8260B/8260B/OA1 Result Qualifier MDL RDL Dilution Analysis Batch Analyte mg/kg mg/kg mg/kg date / time TPH (GC/MS) Low Fraction 0.710 B 0.183 0.500 1 02/21/2024 13:04 WG2230816 Benzene 0.00514 0.000375 0.00100 1 02/21/2024 13:04 WG2230816 1,2-Dichloroethane U 0.000450 0.00100 1 02/21/2024 13:04 WG2230816 1,2-Dibromoethane U 0.000250 0.00100 1 02/21/2024 13:04 WG2230816 Ethylbenzene 0.00945 0.000300 0.00100 1 02/21/2024 13:04 WG2230816 Methyl tert-butyl ether U 0.000350 0.00100 1 02/21/2024 13:04 WG2230816 Naphthalene U 0.00498 0.00500 1 02/22/2024 12:27 WG2231394 Toluene 0.0129 0.00123 0.00500 1 02/21/2024 13:04 WG2230816 Xylenes, Total 0.00303 0.000500 0.00300 1 02/21/2024 13:04 WG2230816 (S) Toluene-d8 100 75.0-131 02/21/2024 13:04 WG2230816 (S) Toluene-d8 109 75.0-131 02/22/2024 12:27 WG2231394 (S) 4-Bromofluorobenzene 96.4 67.0-138 02/21/2024 13:04 WG2230816 (S) 4-Bromofluorobenzene 97.1 67.0-138 02/22/2024 12:27 WG2231394 (S) 1,2-Dichloroethane-d4 117 70.0-130 02/21/2024 13:04 WG2230816 (S) 1,2-Dichloroethane-d4 87.9 70.0-130 02/22/2024 12:27 WG2231394 Semi-Volatile Organic Compounds (GC) by Method 8015 Result Qualifier MDL RDL Dilution Analysis Batch Analyte mg/kg mg/kg mg/kg date / time TPH (GC/FID) High Fraction 5.21 B 0.769 4.00 1 02/21/2024 10:15 WG2229606 (S) o-Terphenyl 36.1 18.0-148 02/21/2024 10:15 WG2229606 1 Cp 2 Tc 3 Ss 4 Cn 5 Sr 6 Qc 7 Gl 8 Al 9 Sc ACCOUNT:PROJECT:SDG:DATE/TIME:PAGE: WSP (Formely Wood E&I)-UT 2381400522 L1706989 02/28/24 07:47 7 of 32 ACCOUNT:PROJECT:SDG:DATE/TIME:PAGE: WSP (Formely Wood E&I)-UT 2381400522 L1706989 02/28/24 09:03 7 of 32 SAMPLE RESULTS - 03 L1706989 SB-102 (9.5-10.5) Collected date/time: 02/14/24 13:15 Total Solids by Method 2540 G-2011 Result Qualifier Dilution Analysis Batch Analyte %date / time Total Solids 88.6 1 02/20/2024 15:53 WG2229033 Volatile Organic Compounds (GC/MS) by Method 8260B/8260B/OA1 Result Qualifier MDL RDL Dilution Analysis Batch Analyte mg/kg mg/kg mg/kg date / time TPH (GC/MS) Low Fraction 0.554 B 0.183 0.500 1 02/21/2024 13:26 WG2230816 Benzene 0.00621 0.000375 0.00100 1 02/21/2024 13:26 WG2230816 1,2-Dichloroethane U 0.000450 0.00100 1 02/21/2024 13:26 WG2230816 1,2-Dibromoethane U 0.000250 0.00100 1 02/21/2024 13:26 WG2230816 Ethylbenzene 0.00361 0.000300 0.00100 1 02/21/2024 13:26 WG2230816 Methyl tert-butyl ether U 0.000350 0.00100 1 02/21/2024 13:26 WG2230816 Naphthalene U 0.00498 0.00500 1 02/22/2024 12:48 WG2231394 Toluene 0.00862 0.00123 0.00500 1 02/21/2024 13:26 WG2230816 Xylenes, Total 0.00274 J 0.000500 0.00300 1 02/21/2024 13:26 WG2230816 (S) Toluene-d8 107 75.0-131 02/21/2024 13:26 WG2230816 (S) Toluene-d8 103 75.0-131 02/22/2024 12:48 WG2231394 (S) 4-Bromofluorobenzene 103 67.0-138 02/21/2024 13:26 WG2230816 (S) 4-Bromofluorobenzene 95.1 67.0-138 02/22/2024 12:48 WG2231394 (S) 1,2-Dichloroethane-d4 128 70.0-130 02/21/2024 13:26 WG2230816 (S) 1,2-Dichloroethane-d4 91.3 70.0-130 02/22/2024 12:48 WG2231394 Semi-Volatile Organic Compounds (GC) by Method 8015 Result Qualifier MDL RDL Dilution Analysis Batch Analyte mg/kg mg/kg mg/kg date / time TPH (GC/FID) High Fraction 39.5 B 3.85 20.0 5 02/21/2024 11:21 WG2229606 (S) o-Terphenyl 30.0 18.0-148 02/21/2024 11:21 WG2229606 1 Cp 2 Tc 3 Ss 4 Cn 5 Sr 6 Qc 7 Gl 8 Al 9 Sc ACCOUNT:PROJECT:SDG:DATE/TIME:PAGE: WSP (Formely Wood E&I)-UT 2381400522 L1706989 02/28/24 07:47 8 of 32 ACCOUNT:PROJECT:SDG:DATE/TIME:PAGE: WSP (Formely Wood E&I)-UT 2381400522 L1706989 02/28/24 09:03 8 of 32 SAMPLE RESULTS - 04 L1706989 SB-102 (34-35) Collected date/time: 02/14/24 13:35 Total Solids by Method 2540 G-2011 Result Qualifier Dilution Analysis Batch Analyte %date / time Total Solids 86.2 1 02/20/2024 15:53 WG2229033 Volatile Organic Compounds (GC/MS) by Method 8260B/8260B/OA1 Result Qualifier MDL RDL Dilution Analysis Batch Analyte mg/kg mg/kg mg/kg date / time TPH (GC/MS) Low Fraction 0.462 B J 0.183 0.500 1 02/21/2024 13:48 WG2230816 Benzene 0.00213 0.000375 0.00100 1 02/21/2024 13:48 WG2230816 1,2-Dichloroethane U 0.000450 0.00100 1 02/21/2024 13:48 WG2230816 1,2-Dibromoethane U 0.000250 0.00100 1 02/21/2024 13:48 WG2230816 Ethylbenzene 0.00772 0.000300 0.00100 1 02/21/2024 13:48 WG2230816 Methyl tert-butyl ether U 0.000350 0.00100 1 02/21/2024 13:48 WG2230816 Naphthalene U 0.00498 0.00500 1 02/21/2024 13:48 WG2230816 Toluene 0.00849 0.00123 0.00500 1 02/21/2024 13:48 WG2230816 Xylenes, Total 0.00170 J 0.000500 0.00300 1 02/21/2024 13:48 WG2230816 (S) Toluene-d8 99.6 75.0-131 02/21/2024 13:48 WG2230816 (S) 4-Bromofluorobenzene 94.6 67.0-138 02/21/2024 13:48 WG2230816 (S) 1,2-Dichloroethane-d4 127 70.0-130 02/21/2024 13:48 WG2230816 Semi-Volatile Organic Compounds (GC) by Method 8015 Result Qualifier MDL RDL Dilution Analysis Batch Analyte mg/kg mg/kg mg/kg date / time TPH (GC/FID) High Fraction 1.52 B J 0.769 4.00 1 02/21/2024 10:03 WG2229606 (S) o-Terphenyl 55.8 18.0-148 02/21/2024 10:03 WG2229606 1 Cp 2 Tc 3 Ss 4 Cn 5 Sr 6 Qc 7 Gl 8 Al 9 Sc ACCOUNT:PROJECT:SDG:DATE/TIME:PAGE: WSP (Formely Wood E&I)-UT 2381400522 L1706989 02/28/24 07:47 9 of 32 ACCOUNT:PROJECT:SDG:DATE/TIME:PAGE: WSP (Formely Wood E&I)-UT 2381400522 L1706989 02/28/24 09:03 9 of 32 SAMPLE RESULTS - 05 L1706989 SB-101 (9.5-10.5) Collected date/time: 02/15/24 08:05 Total Solids by Method 2540 G-2011 Result Qualifier Dilution Analysis Batch Analyte %date / time Total Solids 87.8 1 02/20/2024 15:24 WG2229034 Volatile Organic Compounds (GC/MS) by Method 8260B/8260B/OA1 Result Qualifier MDL RDL Dilution Analysis Batch Analyte mg/kg mg/kg mg/kg date / time TPH (GC/MS) Low Fraction U 0.183 0.500 1 02/22/2024 13:10 WG2231394 Benzene 0.00395 0.000375 0.00100 1 02/22/2024 13:10 WG2231394 1,2-Dichloroethane U 0.000450 0.00100 1 02/22/2024 13:10 WG2231394 1,2-Dibromoethane U 0.000250 0.00100 1 02/22/2024 13:10 WG2231394 Ethylbenzene 0.00174 0.000300 0.00100 1 02/22/2024 13:10 WG2231394 Methyl tert-butyl ether U 0.000350 0.00100 1 02/22/2024 13:10 WG2231394 Naphthalene U 0.00498 0.00500 1 02/22/2024 13:10 WG2231394 Toluene 0.00510 0.00123 0.00500 1 02/22/2024 13:10 WG2231394 Xylenes, Total 0.00180 J 0.000500 0.00300 1 02/22/2024 13:10 WG2231394 (S) Toluene-d8 107 75.0-131 02/22/2024 13:10 WG2231394 (S) 4-Bromofluorobenzene 93.3 67.0-138 02/22/2024 13:10 WG2231394 (S) 1,2-Dichloroethane-d4 94.1 70.0-130 02/22/2024 13:10 WG2231394 Semi-Volatile Organic Compounds (GC) by Method 8015 Result Qualifier MDL RDL Dilution Analysis Batch Analyte mg/kg mg/kg mg/kg date / time TPH (GC/FID) High Fraction 5.27 B 0.769 4.00 1 02/21/2024 10:40 WG2229606 (S) o-Terphenyl 42.9 18.0-148 02/21/2024 10:40 WG2229606 1 Cp 2 Tc 3 Ss 4 Cn 5 Sr 6 Qc 7 Gl 8 Al 9 Sc ACCOUNT:PROJECT:SDG:DATE/TIME:PAGE: WSP (Formely Wood E&I)-UT 2381400522 L1706989 02/28/24 07:47 10 of 32 ACCOUNT:PROJECT:SDG:DATE/TIME:PAGE: WSP (Formely Wood E&I)-UT 2381400522 L1706989 02/28/24 09:03 10 of 32 SAMPLE RESULTS - 06 L1706989 SB-101 (31.5-32.5) Collected date/time: 02/15/24 08:25 Total Solids by Method 2540 G-2011 Result Qualifier Dilution Analysis Batch Analyte %date / time Total Solids 90.2 1 02/20/2024 15:24 WG2229034 Volatile Organic Compounds (GC/MS) by Method 8260B/8260B/OA1 Result Qualifier MDL RDL Dilution Analysis Batch Analyte mg/kg mg/kg mg/kg date / time TPH (GC/MS) Low Fraction 0.467 J V3 0.183 0.500 1 02/22/2024 13:31 WG2231394 Benzene 0.00492 V3 0.000375 0.00100 1 02/22/2024 13:31 WG2231394 1,2-Dichloroethane U 0.000450 0.00100 1 02/22/2024 13:31 WG2231394 1,2-Dibromoethane U 0.000250 0.00100 1 02/22/2024 13:31 WG2231394 Ethylbenzene 0.0112 V3 0.000300 0.00100 1 02/22/2024 13:31 WG2231394 Methyl tert-butyl ether U 0.000350 0.00100 1 02/22/2024 13:31 WG2231394 Naphthalene U 0.00498 0.00500 1 02/22/2024 13:31 WG2231394 Toluene 0.0175 V3 0.00123 0.00500 1 02/22/2024 13:31 WG2231394 Xylenes, Total 0.00310 V3 0.000500 0.00300 1 02/22/2024 13:31 WG2231394 (S) Toluene-d8 112 75.0-131 02/22/2024 13:31 WG2231394 (S) 4-Bromofluorobenzene 99.8 67.0-138 02/22/2024 13:31 WG2231394 (S) 1,2-Dichloroethane-d4 110 70.0-130 02/22/2024 13:31 WG2231394 Sample Narrative: L1706989-06 WG2231394: Previous run also had low IS/SURR recovery. Matrix effect. Semi-Volatile Organic Compounds (GC) by Method 8015 Result Qualifier MDL RDL Dilution Analysis Batch Analyte mg/kg mg/kg mg/kg date / time TPH (GC/FID) High Fraction 1.70 B J 0.769 4.00 1 02/21/2024 09:51 WG2229606 (S) o-Terphenyl 48.9 18.0-148 02/21/2024 09:51 WG2229606 1 Cp 2 Tc 3 Ss 4 Cn 5 Sr 6 Qc 7 Gl 8 Al 9 Sc ACCOUNT:PROJECT:SDG:DATE/TIME:PAGE: WSP (Formely Wood E&I)-UT 2381400522 L1706989 02/28/24 07:47 11 of 32 ACCOUNT:PROJECT:SDG:DATE/TIME:PAGE: WSP (Formely Wood E&I)-UT 2381400522 L1706989 02/28/24 09:03 11 of 32 SAMPLE RESULTS - 07 L1706989 SB-103 (23.5-25) Collected date/time: 02/15/24 12:05 Total Solids by Method 2540 G-2011 Result Qualifier Dilution Analysis Batch Analyte %date / time Total Solids 87.3 1 02/20/2024 15:24 WG2229034 Volatile Organic Compounds (GC/MS) by Method 8260B/8260B/OA1 Result Qualifier MDL RDL Dilution Analysis Batch Analyte mg/kg mg/kg mg/kg date / time TPH (GC/MS) Low Fraction 8.82 0.183 0.500 1 02/22/2024 13:52 WG2231394 Benzene 0.00504 0.000375 0.00100 1 02/22/2024 13:52 WG2231394 1,2-Dichloroethane U 0.000450 0.00100 1 02/22/2024 13:52 WG2231394 1,2-Dibromoethane U 0.000250 0.00100 1 02/22/2024 13:52 WG2231394 Ethylbenzene 0.00311 0.000300 0.00100 1 02/22/2024 13:52 WG2231394 Methyl tert-butyl ether U 0.000350 0.00100 1 02/22/2024 13:52 WG2231394 Naphthalene U 0.00498 0.00500 1 02/22/2024 13:52 WG2231394 Toluene 0.00480 J 0.00123 0.00500 1 02/22/2024 13:52 WG2231394 Xylenes, Total 0.00338 0.000500 0.00300 1 02/22/2024 13:52 WG2231394 (S) Toluene-d8 54.0 J2 75.0-131 02/22/2024 13:52 WG2231394 (S) 4-Bromofluorobenzene 55.2 J2 67.0-138 02/22/2024 13:52 WG2231394 (S) 1,2-Dichloroethane-d4 95.1 70.0-130 02/22/2024 13:52 WG2231394 Sample Narrative: L1706989-07 WG2231394: Surrogate failure due to matrix interference. Semi-Volatile Organic Compounds (GC) by Method 8015 Result Qualifier MDL RDL Dilution Analysis Batch Analyte mg/kg mg/kg mg/kg date / time TPH (GC/FID) High Fraction 46.6 0.769 4.00 1 02/21/2024 10:15 WG2229606 (S) o-Terphenyl 45.5 18.0-148 02/21/2024 10:15 WG2229606 1 Cp 2 Tc 3 Ss 4 Cn 5 Sr 6 Qc 7 Gl 8 Al 9 Sc ACCOUNT:PROJECT:SDG:DATE/TIME:PAGE: WSP (Formely Wood E&I)-UT 2381400522 L1706989 02/28/24 07:47 12 of 32 ACCOUNT:PROJECT:SDG:DATE/TIME:PAGE: WSP (Formely Wood E&I)-UT 2381400522 L1706989 02/28/24 09:03 12 of 32 SAMPLE RESULTS - 08 L1706989 SB-103 (9.5-10.5) Collected date/time: 02/15/24 12:20 Total Solids by Method 2540 G-2011 Result Qualifier Dilution Analysis Batch Analyte %date / time Total Solids 92.8 1 02/20/2024 15:24 WG2229034 Volatile Organic Compounds (GC/MS) by Method 8260B/8260B/OA1 Result Qualifier MDL RDL Dilution Analysis Batch Analyte mg/kg mg/kg mg/kg date / time TPH (GC/MS) Low Fraction 0.542 B 0.183 0.500 1 02/21/2024 15:17 WG2230816 Benzene 0.00641 0.000375 0.00100 1 02/21/2024 15:17 WG2230816 1,2-Dichloroethane U 0.000450 0.00100 1 02/21/2024 15:17 WG2230816 1,2-Dibromoethane U 0.000250 0.00100 1 02/21/2024 15:17 WG2230816 Ethylbenzene 0.00366 0.000300 0.00100 1 02/21/2024 15:17 WG2230816 Methyl tert-butyl ether U 0.000350 0.00100 1 02/21/2024 15:17 WG2230816 Naphthalene U 0.00498 0.00500 1 02/21/2024 15:17 WG2230816 Toluene 0.00664 0.00123 0.00500 1 02/21/2024 15:17 WG2230816 Xylenes, Total 0.00379 0.000500 0.00300 1 02/21/2024 15:17 WG2230816 (S) Toluene-d8 106 75.0-131 02/21/2024 15:17 WG2230816 (S) 4-Bromofluorobenzene 94.4 67.0-138 02/21/2024 15:17 WG2230816 (S) 1,2-Dichloroethane-d4 130 70.0-130 02/21/2024 15:17 WG2230816 Semi-Volatile Organic Compounds (GC) by Method 8015 Result Qualifier MDL RDL Dilution Analysis Batch Analyte mg/kg mg/kg mg/kg date / time TPH (GC/FID) High Fraction 12.3 B 1.54 8.00 2 02/21/2024 11:21 WG2229606 (S) o-Terphenyl 53.0 18.0-148 02/21/2024 11:21 WG2229606 1 Cp 2 Tc 3 Ss 4 Cn 5 Sr 6 Qc 7 Gl 8 Al 9 Sc ACCOUNT:PROJECT:SDG:DATE/TIME:PAGE: WSP (Formely Wood E&I)-UT 2381400522 L1706989 02/28/24 07:47 13 of 32 ACCOUNT:PROJECT:SDG:DATE/TIME:PAGE: WSP (Formely Wood E&I)-UT 2381400522 L1706989 02/28/24 09:03 13 of 32 SAMPLE RESULTS - 09 L1706989 SB-103 (31.5-32.5) Collected date/time: 02/15/24 12:40 Total Solids by Method 2540 G-2011 Result Qualifier Dilution Analysis Batch Analyte %date / time Total Solids 88.3 1 02/20/2024 15:24 WG2229034 Volatile Organic Compounds (GC/MS) by Method 8260B/8260B/OA1 Result Qualifier MDL RDL Dilution Analysis Batch Analyte mg/kg mg/kg mg/kg date / time TPH (GC/MS) Low Fraction 0.498 J 0.183 0.500 1 02/22/2024 14:13 WG2231394 Benzene 0.00470 0.000375 0.00100 1 02/22/2024 14:13 WG2231394 1,2-Dichloroethane U 0.000450 0.00100 1 02/22/2024 14:13 WG2231394 1,2-Dibromoethane U 0.000250 0.00100 1 02/22/2024 14:13 WG2231394 Ethylbenzene 0.0123 0.000300 0.00100 1 02/22/2024 14:13 WG2231394 Methyl tert-butyl ether U 0.000350 0.00100 1 02/22/2024 14:13 WG2231394 Naphthalene U 0.00498 0.00500 1 02/22/2024 14:13 WG2231394 Toluene 0.0168 0.00123 0.00500 1 02/22/2024 14:13 WG2231394 Xylenes, Total 0.00303 0.000500 0.00300 1 02/22/2024 14:13 WG2231394 (S) Toluene-d8 107 75.0-131 02/22/2024 14:13 WG2231394 (S) 4-Bromofluorobenzene 91.8 67.0-138 02/22/2024 14:13 WG2231394 (S) 1,2-Dichloroethane-d4 104 70.0-130 02/22/2024 14:13 WG2231394 Semi-Volatile Organic Compounds (GC) by Method 8015 Result Qualifier MDL RDL Dilution Analysis Batch Analyte mg/kg mg/kg mg/kg date / time TPH (GC/FID) High Fraction 2.47 B J 0.769 4.00 1 02/21/2024 10:28 WG2229606 (S) o-Terphenyl 55.7 18.0-148 02/21/2024 10:28 WG2229606 1 Cp 2 Tc 3 Ss 4 Cn 5 Sr 6 Qc 7 Gl 8 Al 9 Sc ACCOUNT:PROJECT:SDG:DATE/TIME:PAGE: WSP (Formely Wood E&I)-UT 2381400522 L1706989 02/28/24 07:47 14 of 32 ACCOUNT:PROJECT:SDG:DATE/TIME:PAGE: WSP (Formely Wood E&I)-UT 2381400522 L1706989 02/28/24 09:03 14 of 32 SAMPLE RESULTS - 10 L1706989 DUP-021524 Collected date/time: 02/15/24 12:00 Total Solids by Method 2540 G-2011 Result Qualifier Dilution Analysis Batch Analyte %date / time Total Solids 89.8 1 02/20/2024 15:24 WG2229034 Volatile Organic Compounds (GC/MS) by Method 8260B/8260B/OA1 Result Qualifier MDL RDL Dilution Analysis Batch Analyte mg/kg mg/kg mg/kg date / time TPH (GC/MS) Low Fraction 55.1 4.58 12.5 25 02/23/2024 16:32 WG2231391 Benzene U 0.00938 0.0250 25 02/23/2024 16:32 WG2231391 1,2-Dichloroethane U 0.0113 0.0250 25 02/23/2024 16:32 WG2231391 1,2-Dibromoethane U 0.00625 0.0250 25 02/23/2024 16:32 WG2231391 Ethylbenzene 0.00794 J 0.00750 0.0250 25 02/23/2024 16:32 WG2231391 Methyl tert-butyl ether U J3 0.00875 0.0250 25 02/23/2024 16:32 WG2231391 Naphthalene U 0.125 0.125 25 02/23/2024 16:32 WG2231391 Toluene U 0.0308 0.125 25 02/23/2024 16:32 WG2231391 Xylenes, Total 0.0238 J 0.0125 0.0750 25 02/23/2024 16:32 WG2231391 (S) Toluene-d8 87.5 75.0-131 02/23/2024 16:32 WG2231391 (S) 4-Bromofluorobenzene 77.3 67.0-138 02/23/2024 16:32 WG2231391 (S) 1,2-Dichloroethane-d4 78.1 70.0-130 02/23/2024 16:32 WG2231391 Sample Narrative: L1706989-10 WG2231391: Non-target compounds too high to run at a lower dilution. Semi-Volatile Organic Compounds (GC) by Method 8015 Result Qualifier MDL RDL Dilution Analysis Batch Analyte mg/kg mg/kg mg/kg date / time TPH (GC/FID) High Fraction 44.5 0.769 4.00 1 02/21/2024 10:28 WG2229606 (S) o-Terphenyl 36.4 18.0-148 02/21/2024 10:28 WG2229606 1 Cp 2 Tc 3 Ss 4 Cn 5 Sr 6 Qc 7 Gl 8 Al 9 Sc ACCOUNT:PROJECT:SDG:DATE/TIME:PAGE: WSP (Formely Wood E&I)-UT 2381400522 L1706989 02/28/24 07:47 15 of 32 ACCOUNT:PROJECT:SDG:DATE/TIME:PAGE: WSP (Formely Wood E&I)-UT 2381400522 L1706989 02/28/24 09:03 15 of 32 SAMPLE RESULTS - 11 L1706989 WSC-021524 Collected date/time: 02/15/24 12:50 Total Solids by Method 2540 G-2011 Result Qualifier Dilution Analysis Batch Analyte %date / time Total Solids 93.4 1 02/20/2024 15:24 WG2229034 Metals (ICP) by Method 6010D Result Qualifier MDL RDL Dilution Analysis Batch Analyte mg/kg mg/kg mg/kg date / time Lead 7.53 0.208 0.500 1 02/27/2024 17:52 WG2234747 1 Cp 2 Tc 3 Ss 4 Cn 5 Sr 6 Qc 7 Gl 8 Al 9 Sc ACCOUNT:PROJECT:SDG:DATE/TIME:PAGE: WSP (Formely Wood E&I)-UT 2381400522 L1706989 02/28/24 07:47 16 of 32 ACCOUNT:PROJECT:SDG:DATE/TIME:PAGE: WSP (Formely Wood E&I)-UT 2381400522 L1706989 02/28/24 09:03 16 of 32 SAMPLE RESULTS - 12 L1706989 WSC-021524 Collected date/time: 02/15/24 12:50 Preparation by Method 1311 Result Qualifier Prep Batch Analyte date / time TCLP Extraction -2/20/2024 10:16:28 AM WG2229020 Initial pH 6.59 2/20/2024 10:16:28 AM WG2229020 Final pH 5.65 2/20/2024 10:16:28 AM WG2229020 Metals (ICP) by Method 6010B Result Qualifier RDL Limit Dilution Analysis Batch Analyte mg/l mg/l mg/l date / time Lead ND 0.100 5 1 02/21/2024 16:31 WG2230840 1 Cp 2 Tc 3 Ss 4 Cn 5 Sr 6 Qc 7 Gl 8 Al 9 Sc ACCOUNT:PROJECT:SDG:DATE/TIME:PAGE: WSP (Formely Wood E&I)-UT 2381400522 L1706989 02/28/24 07:47 17 of 32 ACCOUNT:PROJECT:SDG:DATE/TIME:PAGE: WSP (Formely Wood E&I)-UT 2381400522 L1706989 02/28/24 09:03 17 of 32 SAMPLE RESULTS - 13 L1706989 TRIP BLANK Collected date/time: 02/15/24 13:00 Volatile Organic Compounds (GC/MS) by Method 8260B/8260B/OA1 Result Qualifier MDL RDL Dilution Analysis Batch Analyte mg/l mg/l mg/l date / time TPH (GC/MS) Low Fraction U 0.108 0.500 1 02/24/2024 16:58 WG2233474 Benzene U 0.0000941 0.00100 1 02/24/2024 16:58 WG2233474 1,2-Dichloroethane U 0.0000819 0.00100 1 02/24/2024 16:58 WG2233474 1,2-Dibromoethane U 0.000126 0.00100 1 02/24/2024 16:58 WG2233474 Ethylbenzene U 0.000137 0.00100 1 02/24/2024 16:58 WG2233474 Methyl tert-butyl ether U 0.000101 0.00100 1 02/24/2024 16:58 WG2233474 Naphthalene U 0.00100 0.00500 1 02/24/2024 16:58 WG2233474 Toluene U 0.000278 0.00100 1 02/24/2024 16:58 WG2233474 Xylenes, Total U 0.000174 0.00300 1 02/24/2024 16:58 WG2233474 (S) Toluene-d8 107 80.0-120 02/24/2024 16:58 WG2233474 (S) 4-Bromofluorobenzene 104 77.0-126 02/24/2024 16:58 WG2233474 (S) 1,2-Dichloroethane-d4 111 70.0-130 02/24/2024 16:58 WG2233474 1 Cp 2 Tc 3 Ss 4 Cn 5 Sr 6 Qc 7 Gl 8 Al 9 Sc ACCOUNT:PROJECT:SDG:DATE/TIME:PAGE: WSP (Formely Wood E&I)-UT 2381400522 L1706989 02/28/24 07:47 18 of 32 ACCOUNT:PROJECT:SDG:DATE/TIME:PAGE: WSP (Formely Wood E&I)-UT 2381400522 L1706989 02/28/24 09:03 18 of 32 QUALITY CONTROL SUMMARYWG2229033 Total Solids by Method 2540 G-2011 L1706989-01,02,03,04 Method Blank (MB) (MB) R4036275-1 02/20/24 15:53 MB Result MB Qualifier MB MDL MB RDL Analyte %%% Total Solids 0.00100 L1706974-01 Original Sample (OS) • Duplicate (DUP) (OS) L1706974-01 02/20/24 15:53 • (DUP) R4036275-3 02/20/24 15:53 Original Result DUP Result Dilution DUP RPD DUP Qualifier DUP RPD Limits Analyte %%%% Total Solids 88.9 91.2 1 2.62 10 Laboratory Control Sample (LCS) (LCS) R4036275-2 02/20/24 15:53 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: WSP (Formely Wood E&I)-UT 2381400522 L1706989 02/28/24 07:47 19 of 32 ACCOUNT:PROJECT:SDG:DATE/TIME:PAGE: WSP (Formely Wood E&I)-UT 2381400522 L1706989 02/28/24 09:03 19 of 32 QUALITY CONTROL SUMMARYWG2229034 Total Solids by Method 2540 G-2011 L1706989-05,06,07,08,09,10,11 Method Blank (MB) (MB) R4036271-1 02/20/24 15:24 MB Result MB Qualifier MB MDL MB RDL Analyte %%% Total Solids 0.00300 L1706989-09 Original Sample (OS) • Duplicate (DUP) (OS) L1706989-09 02/20/24 15:24 • (DUP) R4036271-3 02/20/24 15:24 Original Result DUP Result Dilution DUP RPD DUP Qualifier DUP RPD Limits Analyte %%%% Total Solids 88.3 88.6 1 0.337 10 Laboratory Control Sample (LCS) (LCS) R4036271-2 02/20/24 15:24 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: WSP (Formely Wood E&I)-UT 2381400522 L1706989 02/28/24 07:47 20 of 32 ACCOUNT:PROJECT:SDG:DATE/TIME:PAGE: WSP (Formely Wood E&I)-UT 2381400522 L1706989 02/28/24 09:03 20 of 32 QUALITY CONTROL SUMMARYWG2230840 Metals (ICP) by Method 6010B L1706989-12 Method Blank (MB) (MB) R4036709-1 02/21/24 16:08 MB Result MB Qualifier MB MDL MB RDL Analyte mg/l mg/l mg/l Lead U 0.0330 0.100 Laboratory Control Sample (LCS) (LCS) R4036709-2 02/21/24 16:09 Spike Amount LCS Result LCS Rec.Rec. Limits LCS Qualifier Analyte mg/l mg/l %% Lead 10.0 9.84 98.4 80.0-120 L1706828-02 Original Sample (OS) • Matrix Spike (MS) • Matrix Spike Duplicate (MSD) (OS) L1706828-02 02/21/24 16:11 • (MS) R4036709-4 02/21/24 16:15 • (MSD) R4036709-5 02/21/24 16:16 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 %%%%% Lead 10.0 ND 9.83 9.92 97.9 98.7 1 75.0-125 0.861 20 L1707011-04 Original Sample (OS) • Matrix Spike (MS) • Matrix Spike Duplicate (MSD) (OS) L1707011-04 02/21/24 16:18 • (MS) R4036709-6 02/21/24 16:20 • (MSD) R4036709-7 02/21/24 16:21 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 %%%%% Lead 10.0 ND 9.81 9.81 98.1 98.1 1 75.0-125 0.0261 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: WSP (Formely Wood E&I)-UT 2381400522 L1706989 02/28/24 07:47 21 of 32 ACCOUNT:PROJECT:SDG:DATE/TIME:PAGE: WSP (Formely Wood E&I)-UT 2381400522 L1706989 02/28/24 09:03 21 of 32 QUALITY CONTROL SUMMARYWG2234747 Metals (ICP) by Method 6010D L1706989-11 Method Blank (MB) (MB) R4039006-1 02/27/24 17:33 MB Result MB Qualifier MB MDL MB RDL Analyte mg/kg mg/kg mg/kg Lead U 0.208 0.500 Laboratory Control Sample (LCS) (LCS) R4039006-2 02/27/24 17:36 Spike Amount LCS Result LCS Rec.Rec. Limits LCS Qualifier Analyte mg/kg mg/kg %% Lead 100 93.7 93.7 80.0-120 L1708819-02 Original Sample (OS) • Matrix Spike (MS) • Matrix Spike Duplicate (MSD) (OS) L1708819-02 02/27/24 17:39 • (MS) R4039006-5 02/27/24 17:47 • (MSD) R4039006-6 02/27/24 17:49 Spike Amount Original Result MS Result MSD Result MS Rec.MSD Rec.Dilution Rec. Limits MS Qualifier MSD Qualifier RPD RPD Limits Analyte mg/kg mg/kg mg/kg mg/kg %%%%% Lead 100 303 385 326 81.4 23.2 1 75.0-125 J6 16.4 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: WSP (Formely Wood E&I)-UT 2381400522 L1706989 02/28/24 07:47 22 of 32 ACCOUNT:PROJECT:SDG:DATE/TIME:PAGE: WSP (Formely Wood E&I)-UT 2381400522 L1706989 02/28/24 09:03 22 of 32 QUALITY CONTROL SUMMARYWG2230816 Volatile Organic Compounds (GC/MS) by Method 8260B/8260B/OA1 L1706989-01,02,03,04,08 Method Blank (MB) (MB) R4036774-5 02/21/24 11:53 MB Result MB Qualifier MB MDL MB RDL Analyte mg/kg mg/kg mg/kg TPH (GC/MS) Low Fraction 0.184 J 0.183 0.500 Benzene U 0.000375 0.00100 1,2-Dichloroethane U 0.000450 0.00100 1,2-Dibromoethane U 0.000250 0.00100 Ethylbenzene U 0.000300 0.00100 Methyl tert-butyl ether U 0.000350 0.00100 Naphthalene U 0.00498 0.00500 Toluene U 0.00123 0.00500 Xylenes, Total U 0.000500 0.00300 (S) Toluene-d8 115 75.0-131 (S) 4-Bromofluorobenzene 92.8 67.0-138 (S) 1,2-Dichloroethane-d4 112 70.0-130 Laboratory Control Sample (LCS) • Laboratory Control Sample Duplicate (LCSD) (LCS) R4036774-1 02/21/24 08:11 • (LCSD) R4036774-2 02/21/24 08:34 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 0.0250 0.0251 0.0252 100 101 70.0-123 0.398 20 1,2-Dichloroethane 0.0250 0.0259 0.0273 104 109 65.0-131 5.26 20 1,2-Dibromoethane 0.0250 0.0227 0.0229 90.8 91.6 74.0-128 0.877 20 Ethylbenzene 0.0250 0.0265 0.0254 106 102 74.0-126 4.24 20 Methyl tert-butyl ether 0.0250 0.0299 0.0313 120 125 66.0-132 4.58 20 Naphthalene 0.0250 0.0242 0.0255 96.8 102 59.0-130 5.23 20 Toluene 0.0250 0.0240 0.0235 96.0 94.0 75.0-121 2.11 20 Xylenes, Total 0.0750 0.0740 0.0712 98.7 94.9 72.0-127 3.86 20 (S) Toluene-d8 105 103 75.0-131 (S) 4-Bromofluorobenzene 97.9 97.7 67.0-138 (S) 1,2-Dichloroethane-d4 121 114 70.0-130 Laboratory Control Sample (LCS) (LCS) R4036774-4 02/21/24 11:09 Spike Amount LCS Result LCS Rec.Rec. Limits LCS Qualifier Analyte mg/kg mg/kg %% TPH (GC/MS) Low Fraction 5.00 5.83 117 52.0-154 (S) Toluene-d8 109 75.0-131 (S) 4-Bromofluorobenzene 94.8 67.0-138 (S) 1,2-Dichloroethane-d4 122 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: WSP (Formely Wood E&I)-UT 2381400522 L1706989 02/28/24 07:47 23 of 32 ACCOUNT:PROJECT:SDG:DATE/TIME:PAGE: WSP (Formely Wood E&I)-UT 2381400522 L1706989 02/28/24 09:03 23 of 32 QUALITY CONTROL SUMMARYWG2231391 Volatile Organic Compounds (GC/MS) by Method 8260B/8260B/OA1 L1706989-10 Method Blank (MB) (MB) R4038035-4 02/23/24 14:42 MB Result MB Qualifier MB MDL MB RDL Analyte mg/kg mg/kg mg/kg TPH (GC/MS) Low Fraction U 4.58 12.5 Benzene U 0.00938 0.0250 1,2-Dichloroethane U 0.0113 0.0250 1,2-Dibromoethane U 0.00625 0.0250 Ethylbenzene U 0.00750 0.0250 Methyl tert-butyl ether U 0.00875 0.0250 Naphthalene U 0.125 0.125 Toluene U 0.0308 0.125 Xylenes, Total U 0.0125 0.0750 (S) Toluene-d8 105 75.0-131 (S) 4-Bromofluorobenzene 90.6 67.0-138 (S) 1,2-Dichloroethane-d4 115 70.0-130 Laboratory Control Sample (LCS) • Laboratory Control Sample Duplicate (LCSD) (LCS) R4038035-1 02/23/24 11:31 • (LCSD) R4038035-2 02/23/24 11:52 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 0.0250 0.0258 0.0247 103 98.8 70.0-123 4.36 20 1,2-Dichloroethane 0.0250 0.0228 0.0213 91.2 85.2 65.0-131 6.80 20 1,2-Dibromoethane 0.0250 0.0275 0.0265 110 106 74.0-128 3.70 20 Ethylbenzene 0.0250 0.0248 0.0249 99.2 99.6 74.0-126 0.402 20 Methyl tert-butyl ether 0.0250 0.0271 0.0206 108 82.4 66.0-132 J3 27.3 20 Naphthalene 0.0250 0.0219 0.0217 87.6 86.8 59.0-130 0.917 20 Toluene 0.0250 0.0272 0.0255 109 102 75.0-121 6.45 20 Xylenes, Total 0.0750 0.0760 0.0780 101 104 72.0-127 2.60 20 (S) Toluene-d8 109 102 75.0-131 (S) 4-Bromofluorobenzene 85.0 88.9 67.0-138 (S) 1,2-Dichloroethane-d4 102 90.8 70.0-130 Laboratory Control Sample (LCS) (LCS) R4038035-3 02/23/24 12:35 Spike Amount LCS Result LCS Rec.Rec. Limits LCS Qualifier Analyte mg/kg mg/kg %% TPH (GC/MS) Low Fraction 5.00 4.96 99.2 52.0-154 (S) Toluene-d8 93.7 75.0-131 (S) 4-Bromofluorobenzene 87.9 67.0-138 (S) 1,2-Dichloroethane-d4 102 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: WSP (Formely Wood E&I)-UT 2381400522 L1706989 02/28/24 07:47 24 of 32 ACCOUNT:PROJECT:SDG:DATE/TIME:PAGE: WSP (Formely Wood E&I)-UT 2381400522 L1706989 02/28/24 09:03 24 of 32 QUALITY CONTROL SUMMARYWG2231394 Volatile Organic Compounds (GC/MS) by Method 8260B/8260B/OA1 L1706989-02,03,05,06,07,09 Method Blank (MB) (MB) R4037613-5 02/22/24 10:57 MB Result MB Qualifier MB MDL MB RDL Analyte mg/kg mg/kg mg/kg TPH (GC/MS) Low Fraction U 0.183 0.500 Benzene U 0.000375 0.00100 1,2-Dichloroethane U 0.000450 0.00100 1,2-Dibromoethane U 0.000250 0.00100 Ethylbenzene U 0.000300 0.00100 Methyl tert-butyl ether U 0.000350 0.00100 Naphthalene U 0.00498 0.00500 Toluene U 0.00123 0.00500 Xylenes, Total U 0.000500 0.00300 (S) Toluene-d8 108 75.0-131 (S) 4-Bromofluorobenzene 91.1 67.0-138 (S) 1,2-Dichloroethane-d4 83.7 70.0-130 Laboratory Control Sample (LCS) • Laboratory Control Sample Duplicate (LCSD) (LCS) R4037613-1 02/22/24 08:04 • (LCSD) R4037613-2 02/22/24 08:26 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 0.0250 0.0247 0.0210 98.8 84.0 70.0-123 16.2 20 1,2-Dichloroethane 0.0250 0.0209 0.0219 83.6 87.6 65.0-131 4.67 20 1,2-Dibromoethane 0.0250 0.0270 0.0288 108 115 74.0-128 6.45 20 Ethylbenzene 0.0250 0.0257 0.0262 103 105 74.0-126 1.93 20 Methyl tert-butyl ether 0.0250 0.0210 0.0209 84.0 83.6 66.0-132 0.477 20 Naphthalene 0.0250 0.0233 0.0248 93.2 99.2 59.0-130 6.24 20 Toluene 0.0250 0.0262 0.0275 105 110 75.0-121 4.84 20 Xylenes, Total 0.0750 0.0798 0.0826 106 110 72.0-127 3.45 20 (S) Toluene-d8 103 105 75.0-131 (S) 4-Bromofluorobenzene 90.4 83.6 67.0-138 (S) 1,2-Dichloroethane-d4 89.6 81.8 70.0-130 Laboratory Control Sample (LCS) (LCS) R4037613-3 02/22/24 09:08 Spike Amount LCS Result LCS Rec.Rec. Limits LCS Qualifier Analyte mg/kg mg/kg %% TPH (GC/MS) Low Fraction 5.00 5.57 111 52.0-154 (S) Toluene-d8 110 75.0-131 (S) 4-Bromofluorobenzene 98.8 67.0-138 (S) 1,2-Dichloroethane-d4 80.3 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: WSP (Formely Wood E&I)-UT 2381400522 L1706989 02/28/24 07:47 25 of 32 ACCOUNT:PROJECT:SDG:DATE/TIME:PAGE: WSP (Formely Wood E&I)-UT 2381400522 L1706989 02/28/24 09:03 25 of 32 QUALITY CONTROL SUMMARYWG2233474 Volatile Organic Compounds (GC/MS) by Method 8260B/8260B/OA1 L1706989-13 Method Blank (MB) (MB) R4038800-5 02/24/24 15:43 MB Result MB Qualifier MB MDL MB RDL Analyte mg/l mg/l mg/l TPH (GC/MS) Low Fraction U 0.108 0.500 Benzene U 0.0000941 0.00100 1,2-Dichloroethane U 0.0000819 0.00100 1,2-Dibromoethane U 0.000126 0.00100 Ethylbenzene U 0.000137 0.00100 Methyl tert-butyl ether U 0.000101 0.00100 Naphthalene 0.00162 J 0.00100 0.00500 Toluene U 0.000278 0.00100 Xylenes, Total U 0.000174 0.00300 (S) Toluene-d8 104 80.0-120 (S) 4-Bromofluorobenzene 102 77.0-126 (S) 1,2-Dichloroethane-d4 111 70.0-130 Laboratory Control Sample (LCS) • Laboratory Control Sample Duplicate (LCSD) (LCS) R4038800-1 02/24/24 13:49 • (LCSD) R4038800-2 02/24/24 14:12 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 0.00504 0.00519 101 104 70.0-123 2.93 20 1,2-Dichloroethane 0.00500 0.00479 0.00504 95.8 101 70.0-128 5.09 20 1,2-Dibromoethane 0.00500 0.00438 0.00452 87.6 90.4 80.0-122 3.15 20 Ethylbenzene 0.00500 0.00444 0.00450 88.8 90.0 79.0-123 1.34 20 Methyl tert-butyl ether 0.00500 0.00524 0.00532 105 106 68.0-125 1.52 20 Naphthalene 0.00500 0.00450 0.00414 90.0 82.8 54.0-135 8.33 20 Toluene 0.00500 0.00453 0.00455 90.6 91.0 79.0-120 0.441 20 Xylenes, Total 0.0150 0.0134 0.0139 89.3 92.7 79.0-123 3.66 20 (S) Toluene-d8 101 101 80.0-120 (S) 4-Bromofluorobenzene 98.5 99.3 77.0-126 (S) 1,2-Dichloroethane-d4 109 107 70.0-130 Laboratory Control Sample (LCS) (LCS) R4038800-4 02/24/24 14:57 Spike Amount LCS Result LCS Rec.Rec. Limits LCS Qualifier Analyte mg/l mg/l %% TPH (GC/MS) Low Fraction 5.00 5.00 100 66.0-132 (S) Toluene-d8 102 80.0-120 (S) 4-Bromofluorobenzene 110 77.0-126 (S) 1,2-Dichloroethane-d4 102 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: WSP (Formely Wood E&I)-UT 2381400522 L1706989 02/28/24 07:47 26 of 32 ACCOUNT:PROJECT:SDG:DATE/TIME:PAGE: WSP (Formely Wood E&I)-UT 2381400522 L1706989 02/28/24 09:03 26 of 32 QUALITY CONTROL SUMMARYWG2228726 Semi-Volatile Organic Compounds (GC) by Method 8015 L1706989-01 Method Blank (MB) (MB) R4035706-1 02/20/24 08:50 MB Result MB Qualifier MB MDL MB RDL Analyte mg/kg mg/kg mg/kg TPH (GC/FID) High Fraction U 0.769 4.00 (S) o-Terphenyl 57.4 18.0-148 Laboratory Control Sample (LCS) (LCS) R4035706-2 02/20/24 09:03 Spike Amount LCS Result LCS Rec.Rec. Limits LCS Qualifier Analyte mg/kg mg/kg %% TPH (GC/FID) High Fraction 50.0 32.5 65.0 50.0-150 (S) o-Terphenyl 50.9 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: WSP (Formely Wood E&I)-UT 2381400522 L1706989 02/28/24 07:47 27 of 32 ACCOUNT:PROJECT:SDG:DATE/TIME:PAGE: WSP (Formely Wood E&I)-UT 2381400522 L1706989 02/28/24 09:03 27 of 32 QUALITY CONTROL SUMMARYWG2229606 Semi-Volatile Organic Compounds (GC) by Method 8015 L1706989-02,03,04,05,06,07,08,09,10 Method Blank (MB) (MB) R4036482-1 02/21/24 09:51 MB Result MB Qualifier MB MDL MB RDL Analyte mg/kg mg/kg mg/kg TPH (GC/FID) High Fraction 0.903 J 0.769 4.00 (S) o-Terphenyl 49.8 18.0-148 Laboratory Control Sample (LCS) (LCS) R4036482-2 02/21/24 10:03 Spike Amount LCS Result LCS Rec.Rec. Limits LCS Qualifier Analyte mg/kg mg/kg %% TPH (GC/FID) High Fraction 50.0 34.5 69.0 50.0-150 (S) o-Terphenyl 50.0 18.0-148 L1706989-08 Original Sample (OS) • Matrix Spike (MS) • Matrix Spike Duplicate (MSD) (OS) L1706989-08 02/21/24 11:21 • (MS) R4036482-3 02/21/24 11:34 • (MSD) R4036482-4 02/21/24 11:46 Spike Amount Original Result MS Result MSD Result 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) High Fraction 49.0 12.3 44.7 36.9 66.1 50.7 2 50.0-150 19.1 20 (S) o-Terphenyl 48.8 45.4 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: WSP (Formely Wood E&I)-UT 2381400522 L1706989 02/28/24 07:47 28 of 32 ACCOUNT:PROJECT:SDG:DATE/TIME:PAGE: WSP (Formely Wood E&I)-UT 2381400522 L1706989 02/28/24 09:03 28 of 32 GLOSSARY OF TERMS Guide to Reading and Understanding Your Laboratory Report The information below is designed to better explain the various terms used in your report of analytical results from the Laboratory. This is not intended as a comprehensive explanation, and if you have additional questions please contact your project representative. Results Disclaimer - Information that may be provided by the customer, and contained within this report, include Permit Limits, Project Name, Sample ID, Sample Matrix, Sample Preservation, Field Blanks, Field Spikes, Field Duplicates, On-Site Data, Sampling Collection Dates/Times, and Sampling Location. Results relate to the accuracy of this information provided, and as the samples are received. Abbreviations and Definitions MDL Method Detection Limit. ND Not detected at the Reporting Limit (or MDL where applicable). RDL Reported Detection Limit. Rec.Recovery. RPD Relative Percent Difference. SDG Sample Delivery Group. (S) Surrogate (Surrogate Standard) - Analytes added to every blank, sample, Laboratory Control Sample/Duplicate and Matrix Spike/Duplicate; used to evaluate analytical efficiency by measuring recovery. Surrogates are not expected to be detected in all environmental media. U Not detected at the Reporting Limit (or MDL where applicable). Analyte The name of the particular compound or analysis performed. Some Analyses and Methods will have multiple analytes reported. Dilution If the sample matrix contains an interfering material, the sample preparation volume or weight values differ from the standard, or if concentrations of analytes in the sample are higher than the highest limit of concentration that the laboratory can accurately report, the sample may be diluted for analysis. If a value different than 1 is used in this field, the result reported has already been corrected for this factor. Limits These are the target % recovery ranges or % difference value that the laboratory has historically determined as normal for the method and analyte being reported. Successful QC Sample analysis will target all analytes recovered or duplicated within these ranges. 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 B The same analyte is found in the associated blank. J The identification of the analyte is acceptable; the reported value is an estimate. J2 Surrogate recovery limits have been exceeded; values are outside lower control limits. J3 The associated batch QC was outside the established quality control range for precision. J6 The sample matrix interfered with the ability to make any accurate determination; spike value is low. V3 The internal standard exhibited poor recovery due to sample matrix interference. The analytical results will be biased high. BDL results will be unaffected. 1 Cp 2 Tc 3 Ss 4 Cn 5 Sr 6 Qc 7 Gl 8 Al 9 Sc ACCOUNT:PROJECT:SDG:DATE/TIME:PAGE: WSP (Formely Wood E&I)-UT 2381400522 L1706989 02/28/24 07:47 29 of 32 ACCOUNT:PROJECT:SDG:DATE/TIME:PAGE: WSP (Formely Wood E&I)-UT 2381400522 L1706989 02/28/24 09:03 29 of 32 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: WSP (Formely Wood E&I)-UT 2381400522 L1706989 02/28/24 07:47 30 of 32 ACCOUNT:PROJECT:SDG:DATE/TIME:PAGE: WSP (Formely Wood E&I)-UT 2381400522 L1706989 02/28/24 09:03 30 of 32 ANALYTICAL REPORT March 19, 2024 WSP (Formely Wood E&I)-UT Sample Delivery Group:L1713760 Samples Received:03/09/2024 Project Number:2381400522 Description:Hanksville UDOT #332 Site:HANKSVILLE UDOT Report To:Corey Buchanan 10876 South River Front Parkway South Jordan, UT 84095 Entire Report Reviewed By: March 19, 2024 [Preliminary Report] Daphne Richards Project Manager Results relate only to the items tested or calibrated and are reported as rounded values. This test report shall not be reproduced, except in full, without written approval of the laboratory. Where applicable, sampling conducted by Pace Analytical National is performed per guidance provided in laboratory standard operating procedures ENV-SOP-MTJL-0067 and ENV-SOP-MTJL-0068. Where sampling conducted by the customer, results relate to the accuracy of the information provided, and as the samples are received. Pace Analytical National 12065 Lebanon Rd Mount Juliet, TN 37122 615-758-5858 800-767-5859 www.pacenational.com 1 Cp 2 Tc 3 Ss 4 Cn 5 Sr 6 Qc 7 Gl 8 Al 9 Sc ACCOUNT:PROJECT:SDG:DATE/TIME:PAGE: WSP (Formely Wood E&I)-UT 2381400522 L1713760 03/19/24 08:48 1 of 19 March 19, 2024 Daphne Richards Project Manager ACCOUNT:PROJECT:SDG:DATE/TIME:PAGE: WSP (Formely Wood E&I)-UT 2381400522 L1713760 03/19/24 08:52 1 of 19 TABLE OF CONTENTS Cp: Cover Page 1 Tc: Table of Contents 2 Ss: Sample Summary 3 Cn: Case Narrative 5 Sr: Sample Results 6 MW-101 L1713760-01 6 MW-102 L1713760-08 7 MW-103 L1713760-09 8 MW-104 L1713760-10 9 MW-26 L1713760-11 10 DUP-030724 L1713760-12 11 TB-030724 L1713760-13 12 Qc: Quality Control Summary 13 Volatile Organic Compounds (GC) by Method 8015D/GRO 13 Volatile Organic Compounds (GC/MS) by Method 8260B 15 Semi-Volatile Organic Compounds (GC) by Method 3511/8015 16 Gl: Glossary of Terms 17 Al: Accreditations & Locations 18 Sc: Sample Chain of Custody 19 1 Cp 2 Tc 3 Ss 4 Cn 5 Sr 6 Qc 7 Gl 8 Al 9 Sc ACCOUNT:PROJECT:SDG:DATE/TIME:PAGE: WSP (Formely Wood E&I)-UT 2381400522 L1713760 03/19/24 08:48 2 of 19 ACCOUNT:PROJECT:SDG:DATE/TIME:PAGE: WSP (Formely Wood E&I)-UT 2381400522 L1713760 03/19/24 08:52 2 of 19 SAMPLE SUMMARY Collected by Collected date/time Received date/time MW-101 L1713760-01 GW Rylie Burke 03/07/24 08:45 03/09/24 08:00 Method Batch Dilution Preparation Analysis Analyst Location date/time date/time Volatile Organic Compounds (GC) by Method 8015D/GRO WG2244498 1 03/12/24 08:52 03/12/24 08:52 CDD Mt. Juliet, TN Volatile Organic Compounds (GC/MS) by Method 8260B WG2244820 1 03/12/24 17:13 03/12/24 17:13 JCP Mt. Juliet, TN Semi-Volatile Organic Compounds (GC) by Method 3511/8015 WG2245490 1 03/14/24 18:51 03/15/24 16:42 MAA Mt. Juliet, TN Collected by Collected date/time Received date/time MW-102 L1713760-08 GW Rylie Burke 03/07/24 09:50 03/09/24 08:00 Method Batch Dilution Preparation Analysis Analyst Location date/time date/time Volatile Organic Compounds (GC) by Method 8015D/GRO WG2244806 1 03/12/24 15:53 03/12/24 15:53 DWR Mt. Juliet, TN Volatile Organic Compounds (GC/MS) by Method 8260B WG2244820 1 03/12/24 17:35 03/12/24 17:35 JCP Mt. Juliet, TN Semi-Volatile Organic Compounds (GC) by Method 3511/8015 WG2245490 1 03/14/24 18:51 03/15/24 17:02 MAA Mt. Juliet, TN Collected by Collected date/time Received date/time MW-103 L1713760-09 GW Rylie Burke 03/07/24 10:42 03/09/24 08:00 Method Batch Dilution Preparation Analysis Analyst Location date/time date/time Volatile Organic Compounds (GC) by Method 8015D/GRO WG2244806 1 03/12/24 16:16 03/12/24 16:16 DWR Mt. Juliet, TN Volatile Organic Compounds (GC/MS) by Method 8260B WG2244820 1 03/12/24 17:58 03/12/24 17:58 JCP Mt. Juliet, TN Semi-Volatile Organic Compounds (GC) by Method 3511/8015 WG2245490 1 03/14/24 18:51 03/15/24 17:22 MAA Mt. Juliet, TN Collected by Collected date/time Received date/time MW-104 L1713760-10 GW Rylie Burke 03/07/24 11:20 03/09/24 08:00 Method Batch Dilution Preparation Analysis Analyst Location date/time date/time Volatile Organic Compounds (GC) by Method 8015D/GRO WG2244806 1 03/12/24 16:39 03/12/24 16:39 DWR Mt. Juliet, TN Volatile Organic Compounds (GC/MS) by Method 8260B WG2244820 1 03/12/24 18:20 03/12/24 18:20 JCP Mt. Juliet, TN Semi-Volatile Organic Compounds (GC) by Method 3511/8015 WG2245490 1 03/14/24 18:51 03/15/24 17:42 MAA Mt. Juliet, TN Collected by Collected date/time Received date/time MW-26 L1713760-11 GW Rylie Burke 03/07/24 12:05 03/09/24 08:00 Method Batch Dilution Preparation Analysis Analyst Location date/time date/time Volatile Organic Compounds (GC) by Method 8015D/GRO WG2244806 1 03/12/24 17:02 03/12/24 17:02 DWR Mt. Juliet, TN Volatile Organic Compounds (GC/MS) by Method 8260B WG2244820 1 03/12/24 18:43 03/12/24 18:43 JCP Mt. Juliet, TN Semi-Volatile Organic Compounds (GC) by Method 3511/8015 WG2245490 1 03/14/24 18:51 03/15/24 18:02 MAA Mt. Juliet, TN Collected by Collected date/time Received date/time DUP-030724 L1713760-12 GW Rylie Burke 03/07/24 12:00 03/09/24 08:00 Method Batch Dilution Preparation Analysis Analyst Location date/time date/time Volatile Organic Compounds (GC) by Method 8015D/GRO WG2244806 1 03/12/24 17:25 03/12/24 17:25 DWR Mt. Juliet, TN Volatile Organic Compounds (GC/MS) by Method 8260B WG2244820 1 03/12/24 19:06 03/12/24 19:06 JCP Mt. Juliet, TN Semi-Volatile Organic Compounds (GC) by Method 3511/8015 WG2245490 1 03/14/24 18:51 03/15/24 18:22 MAA 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: WSP (Formely Wood E&I)-UT 2381400522 L1713760 03/19/24 08:48 3 of 19 ACCOUNT:PROJECT:SDG:DATE/TIME:PAGE: WSP (Formely Wood E&I)-UT 2381400522 L1713760 03/19/24 08:52 3 of 19 SAMPLE SUMMARY Collected by Collected date/time Received date/time TB-030724 L1713760-13 GW Rylie Burke 03/07/24 13:00 03/09/24 08:00 Method Batch Dilution Preparation Analysis Analyst Location date/time date/time Volatile Organic Compounds (GC/MS) by Method 8260B WG2244820 1 03/12/24 11:56 03/12/24 11:56 ACG 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: WSP (Formely Wood E&I)-UT 2381400522 L1713760 03/19/24 08:48 4 of 19 ACCOUNT:PROJECT:SDG:DATE/TIME:PAGE: WSP (Formely Wood E&I)-UT 2381400522 L1713760 03/19/24 08:52 4 of 19 CASE NARRATIVE All sample aliquots were received at the correct temperature, in the proper containers, with the appropriate preservatives, and within method specified holding times, unless qualified or notated within the report. Where applicable, all MDL (LOD) and RDL (LOQ) values reported for environmental samples have been corrected for the dilution factor used in the analysis. All Method and Batch Quality Control are within established criteria except where addressed in this case narrative, a non-conformance form or properly qualified within the sample results. By my digital signature below, I affirm to the best of my knowledge, all problems/anomalies observed by the laboratory as having the potential to affect the quality of the data have been identified by the laboratory, and no information or data have been knowingly withheld that would affect the quality of the data. [Preliminary Report] Daphne Richards Project Manager 1 Cp 2 Tc 3 Ss 4 Cn 5 Sr 6 Qc 7 Gl 8 Al 9 Sc ACCOUNT:PROJECT:SDG:DATE/TIME:PAGE: WSP (Formely Wood E&I)-UT 2381400522 L1713760 03/19/24 08:48 5 of 19 Daphne Richards Project Manager ACCOUNT:PROJECT:SDG:DATE/TIME:PAGE: WSP (Formely Wood E&I)-UT 2381400522 L1713760 03/19/24 08:52 5 of 19 SAMPLE RESULTS - 01 L1713760 MW-101 Collected date/time: 03/07/24 08:45 Volatile Organic Compounds (GC) by Method 8015D/GRO Result Qualifier MDL RDL Dilution Analysis Batch Analyte mg/l mg/l mg/l date / time TPH (GC/FID) Low Fraction U 0.0314 0.100 1 03/12/2024 08:52 WG2244498 (S) a,a,a-Trifluorotoluene(FID)101 78.0-120 03/12/2024 08:52 WG2244498 Volatile Organic Compounds (GC/MS) by Method 8260B Result Qualifier MDL RDL Dilution Analysis Batch Analyte mg/l mg/l mg/l date / time Benzene U 0.0000941 0.00100 1 03/12/2024 17:13 WG2244820 Toluene U 0.000278 0.00100 1 03/12/2024 17:13 WG2244820 Ethylbenzene U 0.000137 0.00100 1 03/12/2024 17:13 WG2244820 Total Xylenes U 0.000174 0.00300 1 03/12/2024 17:13 WG2244820 Methyl tert-butyl ether U 0.000101 0.00100 1 03/12/2024 17:13 WG2244820 Naphthalene U 0.00100 0.00500 1 03/12/2024 17:13 WG2244820 (S) Toluene-d8 110 80.0-120 03/12/2024 17:13 WG2244820 (S) 4-Bromofluorobenzene 102 77.0-126 03/12/2024 17:13 WG2244820 (S) 1,2-Dichloroethane-d4 96.4 70.0-130 03/12/2024 17:13 WG2244820 Semi-Volatile Organic Compounds (GC) by Method 3511/8015 Result Qualifier MDL RDL Dilution Analysis Batch Analyte mg/l mg/l mg/l date / time TPH (GC/FID) High Fraction 0.135 B 0.0247 0.100 1 03/15/2024 16:42 WG2245490 (S) o-Terphenyl 60.0 52.0-156 03/15/2024 16:42 WG2245490 1 Cp 2 Tc 3 Ss 4 Cn 5 Sr 6 Qc 7 Gl 8 Al 9 Sc ACCOUNT:PROJECT:SDG:DATE/TIME:PAGE: WSP (Formely Wood E&I)-UT 2381400522 L1713760 03/19/24 08:48 6 of 19 ACCOUNT:PROJECT:SDG:DATE/TIME:PAGE: WSP (Formely Wood E&I)-UT 2381400522 L1713760 03/19/24 08:52 6 of 19 SAMPLE RESULTS - 08 L1713760 MW-102 Collected date/time: 03/07/24 09:50 Volatile Organic Compounds (GC) by Method 8015D/GRO Result Qualifier MDL RDL Dilution Analysis Batch Analyte mg/l mg/l mg/l date / time TPH (GC/FID) Low Fraction 0.0480 B J 0.0314 0.100 1 03/12/2024 15:53 WG2244806 (S) a,a,a-Trifluorotoluene(FID)85.8 78.0-120 03/12/2024 15:53 WG2244806 Volatile Organic Compounds (GC/MS) by Method 8260B Result Qualifier MDL RDL Dilution Analysis Batch Analyte mg/l mg/l mg/l date / time Benzene U 0.0000941 0.00100 1 03/12/2024 17:35 WG2244820 Toluene U 0.000278 0.00100 1 03/12/2024 17:35 WG2244820 Ethylbenzene U 0.000137 0.00100 1 03/12/2024 17:35 WG2244820 Total Xylenes 0.000218 J 0.000174 0.00300 1 03/12/2024 17:35 WG2244820 Methyl tert-butyl ether U 0.000101 0.00100 1 03/12/2024 17:35 WG2244820 Naphthalene U 0.00100 0.00500 1 03/12/2024 17:35 WG2244820 (S) Toluene-d8 109 80.0-120 03/12/2024 17:35 WG2244820 (S) 4-Bromofluorobenzene 103 77.0-126 03/12/2024 17:35 WG2244820 (S) 1,2-Dichloroethane-d4 96.9 70.0-130 03/12/2024 17:35 WG2244820 Semi-Volatile Organic Compounds (GC) by Method 3511/8015 Result Qualifier MDL RDL Dilution Analysis Batch Analyte mg/l mg/l mg/l date / time TPH (GC/FID) High Fraction 0.119 B 0.0247 0.100 1 03/15/2024 17:02 WG2245490 (S) o-Terphenyl 83.2 52.0-156 03/15/2024 17:02 WG2245490 1 Cp 2 Tc 3 Ss 4 Cn 5 Sr 6 Qc 7 Gl 8 Al 9 Sc ACCOUNT:PROJECT:SDG:DATE/TIME:PAGE: WSP (Formely Wood E&I)-UT 2381400522 L1713760 03/19/24 08:48 7 of 19 ACCOUNT:PROJECT:SDG:DATE/TIME:PAGE: WSP (Formely Wood E&I)-UT 2381400522 L1713760 03/19/24 08:52 7 of 19 SAMPLE RESULTS - 09 L1713760 MW-103 Collected date/time: 03/07/24 10:42 Volatile Organic Compounds (GC) by Method 8015D/GRO Result Qualifier MDL RDL Dilution Analysis Batch Analyte mg/l mg/l mg/l date / time TPH (GC/FID) Low Fraction 0.0398 B J 0.0314 0.100 1 03/12/2024 16:16 WG2244806 (S) a,a,a-Trifluorotoluene(FID)86.1 78.0-120 03/12/2024 16:16 WG2244806 Volatile Organic Compounds (GC/MS) by Method 8260B Result Qualifier MDL RDL Dilution Analysis Batch Analyte mg/l mg/l mg/l date / time Benzene U 0.0000941 0.00100 1 03/12/2024 17:58 WG2244820 Toluene U 0.000278 0.00100 1 03/12/2024 17:58 WG2244820 Ethylbenzene U 0.000137 0.00100 1 03/12/2024 17:58 WG2244820 Total Xylenes U 0.000174 0.00300 1 03/12/2024 17:58 WG2244820 Methyl tert-butyl ether U 0.000101 0.00100 1 03/12/2024 17:58 WG2244820 Naphthalene U 0.00100 0.00500 1 03/12/2024 17:58 WG2244820 (S) Toluene-d8 109 80.0-120 03/12/2024 17:58 WG2244820 (S) 4-Bromofluorobenzene 102 77.0-126 03/12/2024 17:58 WG2244820 (S) 1,2-Dichloroethane-d4 97.3 70.0-130 03/12/2024 17:58 WG2244820 Semi-Volatile Organic Compounds (GC) by Method 3511/8015 Result Qualifier MDL RDL Dilution Analysis Batch Analyte mg/l mg/l mg/l date / time TPH (GC/FID) High Fraction 0.105 B 0.0247 0.100 1 03/15/2024 17:22 WG2245490 (S) o-Terphenyl 80.0 52.0-156 03/15/2024 17:22 WG2245490 1 Cp 2 Tc 3 Ss 4 Cn 5 Sr 6 Qc 7 Gl 8 Al 9 Sc ACCOUNT:PROJECT:SDG:DATE/TIME:PAGE: WSP (Formely Wood E&I)-UT 2381400522 L1713760 03/19/24 08:48 8 of 19 ACCOUNT:PROJECT:SDG:DATE/TIME:PAGE: WSP (Formely Wood E&I)-UT 2381400522 L1713760 03/19/24 08:52 8 of 19 SAMPLE RESULTS - 10 L1713760 MW-104 Collected date/time: 03/07/24 11:20 Volatile Organic Compounds (GC) by Method 8015D/GRO Result Qualifier MDL RDL Dilution Analysis Batch Analyte mg/l mg/l mg/l date / time TPH (GC/FID) Low Fraction 0.0529 B J 0.0314 0.100 1 03/12/2024 16:39 WG2244806 (S) a,a,a-Trifluorotoluene(FID)85.8 78.0-120 03/12/2024 16:39 WG2244806 Volatile Organic Compounds (GC/MS) by Method 8260B Result Qualifier MDL RDL Dilution Analysis Batch Analyte mg/l mg/l mg/l date / time Benzene U 0.0000941 0.00100 1 03/12/2024 18:20 WG2244820 Toluene U 0.000278 0.00100 1 03/12/2024 18:20 WG2244820 Ethylbenzene U 0.000137 0.00100 1 03/12/2024 18:20 WG2244820 Total Xylenes U 0.000174 0.00300 1 03/12/2024 18:20 WG2244820 Methyl tert-butyl ether U 0.000101 0.00100 1 03/12/2024 18:20 WG2244820 Naphthalene U 0.00100 0.00500 1 03/12/2024 18:20 WG2244820 (S) Toluene-d8 110 80.0-120 03/12/2024 18:20 WG2244820 (S) 4-Bromofluorobenzene 103 77.0-126 03/12/2024 18:20 WG2244820 (S) 1,2-Dichloroethane-d4 95.3 70.0-130 03/12/2024 18:20 WG2244820 Semi-Volatile Organic Compounds (GC) by Method 3511/8015 Result Qualifier MDL RDL Dilution Analysis Batch Analyte mg/l mg/l mg/l date / time TPH (GC/FID) High Fraction 0.158 B 0.0247 0.100 1 03/15/2024 17:42 WG2245490 (S) o-Terphenyl 85.5 52.0-156 03/15/2024 17:42 WG2245490 1 Cp 2 Tc 3 Ss 4 Cn 5 Sr 6 Qc 7 Gl 8 Al 9 Sc ACCOUNT:PROJECT:SDG:DATE/TIME:PAGE: WSP (Formely Wood E&I)-UT 2381400522 L1713760 03/19/24 08:48 9 of 19 ACCOUNT:PROJECT:SDG:DATE/TIME:PAGE: WSP (Formely Wood E&I)-UT 2381400522 L1713760 03/19/24 08:52 9 of 19 SAMPLE RESULTS - 11 L1713760 MW-26 Collected date/time: 03/07/24 12:05 Volatile Organic Compounds (GC) by Method 8015D/GRO Result Qualifier MDL RDL Dilution Analysis Batch Analyte mg/l mg/l mg/l date / time TPH (GC/FID) Low Fraction 0.0395 B J 0.0314 0.100 1 03/12/2024 17:02 WG2244806 (S) a,a,a-Trifluorotoluene(FID)87.4 78.0-120 03/12/2024 17:02 WG2244806 Volatile Organic Compounds (GC/MS) by Method 8260B Result Qualifier MDL RDL Dilution Analysis Batch Analyte mg/l mg/l mg/l date / time Benzene U 0.0000941 0.00100 1 03/12/2024 18:43 WG2244820 Toluene U 0.000278 0.00100 1 03/12/2024 18:43 WG2244820 Ethylbenzene U 0.000137 0.00100 1 03/12/2024 18:43 WG2244820 Total Xylenes U 0.000174 0.00300 1 03/12/2024 18:43 WG2244820 Methyl tert-butyl ether U 0.000101 0.00100 1 03/12/2024 18:43 WG2244820 Naphthalene U 0.00100 0.00500 1 03/12/2024 18:43 WG2244820 (S) Toluene-d8 110 80.0-120 03/12/2024 18:43 WG2244820 (S) 4-Bromofluorobenzene 99.8 77.0-126 03/12/2024 18:43 WG2244820 (S) 1,2-Dichloroethane-d4 97.4 70.0-130 03/12/2024 18:43 WG2244820 Semi-Volatile Organic Compounds (GC) by Method 3511/8015 Result Qualifier MDL RDL Dilution Analysis Batch Analyte mg/l mg/l mg/l date / time TPH (GC/FID) High Fraction 0.109 B 0.0247 0.100 1 03/15/2024 18:02 WG2245490 (S) o-Terphenyl 81.1 52.0-156 03/15/2024 18:02 WG2245490 1 Cp 2 Tc 3 Ss 4 Cn 5 Sr 6 Qc 7 Gl 8 Al 9 Sc ACCOUNT:PROJECT:SDG:DATE/TIME:PAGE: WSP (Formely Wood E&I)-UT 2381400522 L1713760 03/19/24 08:48 10 of 19 ACCOUNT:PROJECT:SDG:DATE/TIME:PAGE: WSP (Formely Wood E&I)-UT 2381400522 L1713760 03/19/24 08:52 10 of 19 SAMPLE RESULTS - 12 L1713760 DUP-030724 Collected date/time: 03/07/24 12:00 Volatile Organic Compounds (GC) by Method 8015D/GRO Result Qualifier MDL RDL Dilution Analysis Batch Analyte mg/l mg/l mg/l date / time TPH (GC/FID) Low Fraction 0.0330 B J 0.0314 0.100 1 03/12/2024 17:25 WG2244806 (S) a,a,a-Trifluorotoluene(FID)86.5 78.0-120 03/12/2024 17:25 WG2244806 Volatile Organic Compounds (GC/MS) by Method 8260B Result Qualifier MDL RDL Dilution Analysis Batch Analyte mg/l mg/l mg/l date / time Benzene U 0.0000941 0.00100 1 03/12/2024 19:06 WG2244820 Toluene U 0.000278 0.00100 1 03/12/2024 19:06 WG2244820 Ethylbenzene U 0.000137 0.00100 1 03/12/2024 19:06 WG2244820 Total Xylenes U 0.000174 0.00300 1 03/12/2024 19:06 WG2244820 Methyl tert-butyl ether U 0.000101 0.00100 1 03/12/2024 19:06 WG2244820 Naphthalene U 0.00100 0.00500 1 03/12/2024 19:06 WG2244820 (S) Toluene-d8 108 80.0-120 03/12/2024 19:06 WG2244820 (S) 4-Bromofluorobenzene 102 77.0-126 03/12/2024 19:06 WG2244820 (S) 1,2-Dichloroethane-d4 94.6 70.0-130 03/12/2024 19:06 WG2244820 Semi-Volatile Organic Compounds (GC) by Method 3511/8015 Result Qualifier MDL RDL Dilution Analysis Batch Analyte mg/l mg/l mg/l date / time TPH (GC/FID) High Fraction 0.134 B 0.0247 0.100 1 03/15/2024 18:22 WG2245490 (S) o-Terphenyl 80.5 52.0-156 03/15/2024 18:22 WG2245490 1 Cp 2 Tc 3 Ss 4 Cn 5 Sr 6 Qc 7 Gl 8 Al 9 Sc ACCOUNT:PROJECT:SDG:DATE/TIME:PAGE: WSP (Formely Wood E&I)-UT 2381400522 L1713760 03/19/24 08:48 11 of 19 ACCOUNT:PROJECT:SDG:DATE/TIME:PAGE: WSP (Formely Wood E&I)-UT 2381400522 L1713760 03/19/24 08:52 11 of 19 SAMPLE RESULTS - 13 L1713760 TB-030724 Collected date/time: 03/07/24 13:00 Volatile Organic Compounds (GC/MS) by Method 8260B Result Qualifier MDL RDL Dilution Analysis Batch Analyte mg/l mg/l mg/l date / time Benzene U 0.0000941 0.00100 1 03/12/2024 11:56 WG2244820 Toluene U 0.000278 0.00100 1 03/12/2024 11:56 WG2244820 Ethylbenzene U 0.000137 0.00100 1 03/12/2024 11:56 WG2244820 Total Xylenes U 0.000174 0.00300 1 03/12/2024 11:56 WG2244820 Methyl tert-butyl ether U 0.000101 0.00100 1 03/12/2024 11:56 WG2244820 Naphthalene U 0.00100 0.00500 1 03/12/2024 11:56 WG2244820 (S) Toluene-d8 110 80.0-120 03/12/2024 11:56 WG2244820 (S) 4-Bromofluorobenzene 104 77.0-126 03/12/2024 11:56 WG2244820 (S) 1,2-Dichloroethane-d4 98.4 70.0-130 03/12/2024 11:56 WG2244820 1 Cp 2 Tc 3 Ss 4 Cn 5 Sr 6 Qc 7 Gl 8 Al 9 Sc ACCOUNT:PROJECT:SDG:DATE/TIME:PAGE: WSP (Formely Wood E&I)-UT 2381400522 L1713760 03/19/24 08:48 12 of 19 ACCOUNT:PROJECT:SDG:DATE/TIME:PAGE: WSP (Formely Wood E&I)-UT 2381400522 L1713760 03/19/24 08:52 12 of 19 QUALITY CONTROL SUMMARYWG2244498 Volatile Organic Compounds (GC) by Method 8015D/GRO L1713760-01 Method Blank (MB) (MB) R4044912-2 03/12/24 01:43 MB Result MB Qualifier MB MDL MB RDL Analyte mg/l mg/l mg/l TPH (GC/FID) Low Fraction U 0.0314 0.100 (S) a,a,a-Trifluorotoluene(FID)100 78.0-120 Laboratory Control Sample (LCS) (LCS) R4044912-1 03/12/24 00:59 Spike Amount LCS Result LCS Rec.Rec. Limits LCS Qualifier Analyte mg/l mg/l %% TPH (GC/FID) Low Fraction 5.50 5.42 98.5 72.0-127 (S) a,a,a-Trifluorotoluene(FID) 102 78.0-120 L1713735-01 Original Sample (OS) • Matrix Spike (MS) • Matrix Spike Duplicate (MSD) (OS) L1713735-01 03/12/24 03:45 • (MS) R4044912-3 03/12/24 10:41 • (MSD) R4044912-4 03/12/24 11:03 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 %%%%% TPH (GC/FID) Low Fraction 5.50 U 6.39 6.22 116 113 1 10.0-160 2.70 22 (S) a,a,a-Trifluorotoluene(FID) 105 103 78.0-120 1 Cp 2 Tc 3 Ss 4 Cn 5 Sr 6 Qc 7 Gl 8 Al 9 Sc ACCOUNT:PROJECT:SDG:DATE/TIME:PAGE: WSP (Formely Wood E&I)-UT 2381400522 L1713760 03/19/24 08:48 13 of 19 ACCOUNT:PROJECT:SDG:DATE/TIME:PAGE: WSP (Formely Wood E&I)-UT 2381400522 L1713760 03/19/24 08:52 13 of 19 QUALITY CONTROL SUMMARYWG2244806 Volatile Organic Compounds (GC) by Method 8015D/GRO L1713760-08,09,10,11,12 Method Blank (MB) (MB) R4046853-3 03/12/24 12:30 MB Result MB Qualifier MB MDL MB RDL Analyte mg/l mg/l mg/l TPH (GC/FID) Low Fraction 0.0375 J 0.0314 0.100 (S) a,a,a-Trifluorotoluene(FID)86.8 78.0-120 Laboratory Control Sample (LCS) • Laboratory Control Sample Duplicate (LCSD) (LCS) R4046853-1 03/12/24 11:21 • (LCSD) R4046853-2 03/12/24 11:44 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 %%%%% TPH (GC/FID) Low Fraction 5.00 4.54 4.74 90.8 94.8 72.0-127 4.31 20 (S) a,a,a-Trifluorotoluene(FID) 105 106 78.0-120 L1713909-04 Original Sample (OS) • Matrix Spike (MS) • Matrix Spike Duplicate (MSD) (OS) L1713909-04 03/12/24 21:48 • (MS) R4046853-4 03/12/24 22:11 • (MSD) R4046853-5 03/12/24 22:35 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 %%%%% TPH (GC/FID) Low Fraction 5.00 0.0323 3.51 3.26 69.6 64.6 1 10.0-160 7.39 22 (S) a,a,a-Trifluorotoluene(FID) 96.7 97.4 78.0-120 1 Cp 2 Tc 3 Ss 4 Cn 5 Sr 6 Qc 7 Gl 8 Al 9 Sc ACCOUNT:PROJECT:SDG:DATE/TIME:PAGE: WSP (Formely Wood E&I)-UT 2381400522 L1713760 03/19/24 08:48 14 of 19 ACCOUNT:PROJECT:SDG:DATE/TIME:PAGE: WSP (Formely Wood E&I)-UT 2381400522 L1713760 03/19/24 08:52 14 of 19 QUALITY CONTROL SUMMARYWG2244820 Volatile Organic Compounds (GC/MS) by Method 8260B L1713760-01,08,09,10,11,12,13 Method Blank (MB) (MB) R4044645-3 03/12/24 11:16 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 111 80.0-120 (S) 4-Bromofluorobenzene 103 77.0-126 (S) 1,2-Dichloroethane-d4 99.4 70.0-130 Laboratory Control Sample (LCS) • Laboratory Control Sample Duplicate (LCSD) (LCS) R4044645-1 03/12/24 09:46 • (LCSD) R4044645-2 03/12/24 10:08 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 0.00439 0.00442 87.8 88.4 70.0-123 0.681 20 Toluene 0.00500 0.00521 0.00506 104 101 79.0-120 2.92 20 Ethylbenzene 0.00500 0.00482 0.00479 96.4 95.8 79.0-123 0.624 20 Total Xylenes 0.0150 0.0149 0.0144 99.3 96.0 79.0-123 3.41 20 Methyl tert-butyl ether 0.00500 0.00426 0.00388 85.2 77.6 68.0-125 9.34 20 Naphthalene 0.00500 0.00446 0.00449 89.2 89.8 54.0-135 0.670 20 (S) Toluene-d8 111 110 80.0-120 (S) 4-Bromofluorobenzene 103 102 77.0-126 (S) 1,2-Dichloroethane-d4 101 100 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: WSP (Formely Wood E&I)-UT 2381400522 L1713760 03/19/24 08:48 15 of 19 ACCOUNT:PROJECT:SDG:DATE/TIME:PAGE: WSP (Formely Wood E&I)-UT 2381400522 L1713760 03/19/24 08:52 15 of 19 QUALITY CONTROL SUMMARYWG2245490 Semi-Volatile Organic Compounds (GC) by Method 3511/8015 L1713760-01,08,09,10,11,12 Method Blank (MB) (MB) R4046398-1 03/15/24 11:38 MB Result MB Qualifier MB MDL MB RDL Analyte mg/l mg/l mg/l TPH (GC/FID) High Fraction 0.0371 J 0.0247 0.100 (S) o-Terphenyl 84.5 52.0-156 Laboratory Control Sample (LCS) • Laboratory Control Sample Duplicate (LCSD) (LCS) R4046398-2 03/15/24 11:58 • (LCSD) R4046398-3 03/15/24 12:19 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 %%%%% TPH (GC/FID) High Fraction 1.50 1.70 1.71 113 114 50.0-150 0.587 20 (S) o-Terphenyl 103 101 52.0-156 1 Cp 2 Tc 3 Ss 4 Cn 5 Sr 6 Qc 7 Gl 8 Al 9 Sc ACCOUNT:PROJECT:SDG:DATE/TIME:PAGE: WSP (Formely Wood E&I)-UT 2381400522 L1713760 03/19/24 08:48 16 of 19 ACCOUNT:PROJECT:SDG:DATE/TIME:PAGE: WSP (Formely Wood E&I)-UT 2381400522 L1713760 03/19/24 08:52 16 of 19 GLOSSARY OF TERMS Guide to Reading and Understanding Your Laboratory Report The information below is designed to better explain the various terms used in your report of analytical results from the Laboratory. This is not intended as a comprehensive explanation, and if you have additional questions please contact your project representative. Results Disclaimer - Information that may be provided by the customer, and contained within this report, include Permit Limits, Project Name, Sample ID, Sample Matrix, Sample Preservation, Field Blanks, Field Spikes, Field Duplicates, On-Site Data, Sampling Collection Dates/Times, and Sampling Location. Results relate to the accuracy of this information provided, and as the samples are received. Abbreviations and Definitions MDL Method Detection Limit. RDL Reported Detection Limit. Rec.Recovery. RPD Relative Percent Difference. SDG Sample Delivery Group. (S) Surrogate (Surrogate Standard) - Analytes added to every blank, sample, Laboratory Control Sample/Duplicate and Matrix Spike/Duplicate; used to evaluate analytical efficiency by measuring recovery. Surrogates are not expected to be detected in all environmental media. U Not detected at the Reporting Limit (or MDL where applicable). Analyte The name of the particular compound or analysis performed. Some Analyses and Methods will have multiple analytes reported. Dilution If the sample matrix contains an interfering material, the sample preparation volume or weight values differ from the standard, or if concentrations of analytes in the sample are higher than the highest limit of concentration that the laboratory can accurately report, the sample may be diluted for analysis. If a value different than 1 is used in this field, the result reported has already been corrected for this factor. Limits These are the target % recovery ranges or % difference value that the laboratory has historically determined as normal for the method and analyte being reported. Successful QC Sample analysis will target all analytes recovered or duplicated within these ranges. 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 B The same analyte is found in the associated blank. J The identification of the analyte is acceptable; the reported value is an estimate. 1 Cp 2 Tc 3 Ss 4 Cn 5 Sr 6 Qc 7 Gl 8 Al 9 Sc ACCOUNT:PROJECT:SDG:DATE/TIME:PAGE: WSP (Formely Wood E&I)-UT 2381400522 L1713760 03/19/24 08:48 17 of 19 ACCOUNT:PROJECT:SDG:DATE/TIME:PAGE: WSP (Formely Wood E&I)-UT 2381400522 L1713760 03/19/24 08:52 17 of 19 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: WSP (Formely Wood E&I)-UT 2381400522 L1713760 03/19/24 08:48 18 of 19 ACCOUNT:PROJECT:SDG:DATE/TIME:PAGE: WSP (Formely Wood E&I)-UT 2381400522 L1713760 03/19/24 08:52 18 of 19