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HomeMy WebLinkAboutDERR-2025-000580 LIMITED SUBSURFACE INVESTIGATION, PHASE II ENVIRONMENTAL SITE ASSESSMENT Maverik Clearfield 1350 East 1350 and 1352 East 700 South Clearfield, Davis County, Utah 84015 Davis County Parcel Numbers: 094350001 and 094350002 DERR Facility ID: 3000089 CMT PROJECT NO. 23501 FOR: Mr. Thomas Hunt and Mr. Greg Day Hunt Day Engineering 3445 West Antelope Drive, Suite 200 Syracuse, UT 84075 January 17, 2025 EN G I N E E R I N G  G E O T E C H N I C A L  G E O L O G Y  EN V I R O N M E N T A L ( E S A I & I I )  M A T E R I A L S T E S T I N G  SP E C I A L I N S P E C T I O N S  O R G A N I C C H E M I S T R Y  SU R V E Y I N G  P A V E M E N T D E S I G N  Limited Subsurface Investigation, Phase II Environmental Site Assessment CMT Technical Services CMT Project 23501: Maverik Clearfield 1350 East January 17, 2025 i EXECUTIVE SUMMARY On behalf Hunt Day Engineering (the “Client”), CMT Technical Services (CMT) has prepared the following Limited Subsurface Investigation (LSI) Phase II Environmental Site Assessment (ESA) describing the results of subsurface assessment activities conducted on a site containing a Chevron-branded fueling station, convenience store, and automobile service and repair garage. This report outlines the results from the LSI, which was requested in association with the Client’s interest in purchasing and redeveloping the site (hereafter referred to as the “Subject Property”) as a new Maverik-branded fueling station and convenience store. The Subject Property is located at the listed addresses of 1350 and 1352 East 700 South in Clearfield, Davis County, Utah. This report includes discussions concerning CMT’s investigative methods, the scope of work performed, and the analytical results of the collected samples. The purpose of the LSI assessment activities was to evaluate, characterize, and delineate the nature, source, and extent to the degree possible (both horizontally and vertically) various potential impacts to the soil and groundwater underneath the Subject Property. Potential contaminants include gasoline, diesel fuel, lubricating oils and grease, waste oil, heavy metals, degreasing solvents, detergents, fuel additives, and vehicle/equipment maintenance fluids. Possible sources for these potential contaminants include the current on-site fueling station operations on the north side, the historical car wash operations on the northwest corner, and the current service and repair garage operations on the south side of the Subject Property. These uses of the Subject Property could also represent a source of potential vapor intrusion and/or migration if related contamination is present in the subsurface. The entire Subject Property is trapezoidal and comprised of two parcels totaling approximately 1.204-acres, with the Davis County Parcel ID Numbers 094350001 and 094350002. The Subject Property is zoned as Commercial, and is currently occupied by a Chevron fueling station, convenience store, automobile service garage, and a closed detached car wash building. The fueling station currently contains four underground storage tanks (USTs). The fueling station formerly contained one 500- gallon used oil steel UST. The Subject Property has operated as a fueling station and convenience store since mid-1966. The automobile service and repair garage has been open since 1980. Limited Subsurface Investigation, Phase II Environmental Site Assessment CMT Technical Services CMT Project 23501: Maverik Clearfield 1350 East January 17, 2025 ii Project Background Two petroleum releases have been reported at this facility. Petroleum Release LFC was reported in March 2000 after the product lines were upgraded on the Subject Property. Regulators determined the release was relatively insignificant, as petroleum contaminant concentrations were below the Recommended Cleanup Levels (RCLs) and closed the release file in May 2000. Petroleum Release MZS was reported in November 2011 after diesel fuel was observed in the UST sump. Regulators determined remaining petroleum contamination at the site did not pose a threat to human health or the environment and closed the release file in July 2013. A Phase I ESA that included the Subject Property (CMT, 2025) noted Recognized Environmental Conditions (RECs) related to the storage of waste oil, surficial oil staining in the repair garage, and contaminated sump drains. A detailed summary of historical background information and relevant findings for the Subject Property is described in Section 1.1. Additional details on the identified REC and HRECs are provided in Section 1.3. Scope of Work Due to the Subject Property’s known use as a fueling station and automobile service garage, the presence of current or historical RECs was anticipated. CMT was contracted by Hunt Day to conduct an LSI on the Subject Property. The purpose of the LSI was to evaluate, characterize, and delineate the nature, source, and extent, to the degree possible (both horizontally and vertically), of potential impacts to the soil and groundwater stemming from historical releases from the operation of the fueling station, car wash, and automobile service and repair garage on the Subject Property. Releases may originate from the on-site storage and dispensing of gasoline, diesel fuel, fuel additives, waste oil, vehicle/equipment maintenance fluids, degreasing solvents, and storage of automobiles on the Subject Property. Site investigation work was performed on December 10 and 11, 2024. In order to evaluate the degree of potential soil and groundwater impacts to the Subject Property from the identified REC, CMT directed that a total of 11 shallow exploratory borings be advanced to the estimated depth of groundwater in various locations of potential contamination across the Subject Property. CMT collected soil and groundwater samples from all of the borings. Borings were not placed outside of the Subject Property boundaries. Limited Subsurface Investigation, Phase II Environmental Site Assessment CMT Technical Services CMT Project 23501: Maverik Clearfield 1350 East January 17, 2025 iii The soil and groundwater samples were analyzed for the following selected COCs:  Volatile organic compounds (VOCs) Full List by the United States Environmental Protection Agency (U.S. EPA) Methods 8260D/5030A by Gas Chromatography/Mass Spectrometry (GC/MS);  TPH-GRO (C5-C10) Fractionation by EPA Methods 8260D/5030A by GC/MS;  TPH-DRO (C10-C28) by EPA Method 8015C by Gas Chromatography/Flame Ionization Detector (GC/FID); and  Soil sample locations B-1, B-2, and B-3, due to their respective proximities to the service garage, waste oil AST, and car wash clarifier/oil-water separator, were also analyzed for: o Oil and Grease (O&G) by EPA Method 1664B-Mod and silica gel treated-hexane extractable material (SGT-HEM), also known as Total Recoverable Petroleum Hydrocarbons (TRPH), by EPA Method 1664B-Mod.; and o Total Metals, Resource Conservation and Recovery Act (RCRA)-D List 8 for arsenic, barium, cadmium, chromium, lead, selenium, and silver by EPA Methods 6020A/3050B by Inductively Coupled Plasma/Mass Spectrometry (ICP/MS), and for mercury by EPA Method 7471A by cold- vapor atomic absorption (CVAA). All soil and groundwater analytical results were compared, where applicable, to the UDEQ’s Initial Screening Levels (ISLs) as established by the Utah Leaking Petroleum Storage Tank (LPST) Program, a regulatory branch of the UDEQ–DERR. Soil analytical results were also evaluated against the EPA Regional Screening Levels (RSLs) for Residential and Industrial Soils, and the EPA Risk-Based Selective Screening Levels (RBSSLs) for protection of groundwater. Analytical Results Soil sample analytical results are summarized as:  TPH-GRO concentrations exceeded the UDEQ ISL of 150 mg/kg in B-7-8.5’, at 2,100 mg/kg.  TPH-DRO concentrations exceeded the UDEQ ISL of 500 mg/kg in B-7-8.5’, at 4,990 mg/kg.  O&G and TRPH were not detected above the LRLs in all soil samples.  Benzene concentrations exceeded the Utah ISL of 0.2 mg/kg in B-7-8.5’, at B-7-8.5’. None of the concentrations exceeded either of the EPA RSLs for residential or commercial/industrial soil.  Ethylbenzene concentrations exceeded the Utah ISL of 5 mg/kg and the EPA RSLs for residential or commercial/industrial soil of 5.8 and 25 mg/kg, respectively, in B-7-8.5’, at 39.7 mg/kg.  Total Xylene concentrations exceeded the Utah ISL of 142 mg/kg in B-7-8.5’, at 388 mg/kg. None of the concentrations exceeded either of the EPA RSLs for residential or commercial/industrial soil.  Naphthalene concentrations exceeded the Utah ISL of 51 mg/kg, and both of the EPA RSLs for residential or commercial/industrial soil of 2.0 and 8.6 mg/kg, respectively, in B-7-8.5’, at 62.0 mg/kg. Limited Subsurface Investigation, Phase II Environmental Site Assessment CMT Technical Services CMT Project 23501: Maverik Clearfield 1350 East January 17, 2025 iv  Concentrations of all other VOCs were detected below the Utah ISLs and EPA RSLs.  Arsenic concentrations exceeded the EPA RSL for residential soil of 0.68 mg/kg, and the EPA RSL for commercial/industrial soil of 3.0 mg/kg in B-3-8.5’, at 5.70 mg/kg. However, all concentrations were within the estimated Utah regional natural soil background level range for arsenic of 2.8 to 10.9 mg/kg (U.S. EPA, Region 8 Risk Assessment Contacts).  Concentrations of all other metals were detected at concentrations that did not exceed the respective EPA RSLs for residential and commercial-industrial soils. During investigation activities groundwater was encountered at depths ranging approximately between 14 and 17.5 feet bgs. No unusual odors were observed from the groundwater samples. Oil & Grease concentrations exceeded the Utah ISL of 10 mg/L in B-1-W, at 17 mg/L. No other groundwater samples indicated concentrations that exceeded the UDEQ ISLs or EPA MCLs. Conclusions In conclusion, the Subject Property is underlain by soils impacted by petroleum hydrocarbons in multiple locations and from multiple possible sources. The primary impacted locations are in the vicinity of boreholes B-7, B-8, and B-1 with contaminants of TPH-DRO, TPH-GRO, O&G, and benzene. B-7 is located adjacent to dispenser pump #7, B-8 is located in the approximate location of the south dispenser from the original canopy removed in 2000, and B-1 is located downgradient of the automobile service and repair garage. The potential for migration or intrusion of hydrocarbon vapors into the current and future proposed structures is possible and a concern in these areas. This includes vapors emanating from impacted groundwater as well as soils, even where soil contaminant levels are below screening limits. The convenience store building is also in the general direction of groundwater flow to the southwest from dispenser pump #7. There is the potential that there is a source area under the automobile service and repair garage with a plume extending downgradient. Recommendations CMT recommends based on the available data, under current conditions and site use of the Subject Property and under the proposed future conditions and site uses, additional characterization of the nature and extent of potential soil and groundwater impacts on the Subject Property is needed to delineate the O&G/TRPH source area under the automobile service and repair garage, and that remedial actions are warranted. The following recommendations Limited Subsurface Investigation, Phase II Environmental Site Assessment CMT Technical Services CMT Project 23501: Maverik Clearfield 1350 East January 17, 2025 v are based on the findings and conclusions presented in this LSI Phase II report and previous data obtained from the Phase I ESA. 1. Provide a copy of this Phase II LSI report to the UDEQ-DERR for review and determination of a new release or LUST investigation. 2. Additional characterization of the nature and extent of potential soil and groundwater impacts on the Subject Property is needed to confirm and delineate the source areas, specifically the O&G detections in groundwater downgradient of the automobile service and repair garage (location B-1). The entire area of the garage building was filled with vehicles, automotive parts, repair equipment, and supplies during the Phase I ESA and the Phase II soil sampling. Due to the lack of accessibility inside the garage building at the time of the Phase II, direct soil and groundwater samples could not be collected. After the service and repair garage business has been closed and moved out, additional borings located adjacent to each of the sump drains or any other potential preferential pathway should be drilled and the soil and groundwater sampled for petroleum hydrocarbons, VOCs, and heavy metals. Following the additional characterization and assessment discussed above, and as warranted based on findings, a focused feasibility study of appropriate remedial options and implement remedial action for the cleanup of the site should be completed. Cost estimates and procedures should be prepared for the following two remedial actions: Excavation and Removal (soil remediation), Cap and Grade (isolate soil and groundwater from future development), and Soil Vapor Intrusion Mitigation. Remedial Action #1: Excavation and Removal. As the Subject Property has been proposed to be redeveloped, potential vapor intrusion can be significantly mitigated by excavation and removal of any impacted soils encountered as part of demolition and construction activities. CMT anticipates that the USTs, dispensers, and associated product piping will be decommissioned, excavated, and removed, and the existing convenience store, car wash, canopy, and service garage will be demolished and cleared. CMT recommends that soils near borings B- 7 (dispenser pump #7) and B-8 (former location of south dispenser), and any other petroleum hydrocarbon- impacted soils encountered during the future construction activities, be removed by excavation, the material disposed of at an appropriate facility, and confirmation sampling and testing be conducted. During construction activities and excavations in the confirmed or suspected areas, CMT can be onsite to monitor vapors from excavated soil with a PID or FID (flame-ionization detector) in excavations in any confirmed or suspected areas. Once soil with PID or FID measurements near zero is reached in the excavations, CMT will conduct confirmation soil sampling on the bottom and the sidewalls of the excavations according to UDEQ–DERR protocols for UST removal. This procedure can be repeated for any other areas discovered during the additional assessment or construction found to be impacted by petroleum hydrocarbons and heavy metals should likewise be excavated, and samples collected Limited Subsurface Investigation, Phase II Environmental Site Assessment CMT Technical Services CMT Project 23501: Maverik Clearfield 1350 East January 17, 2025 vi to confirm removal of impacted soil. CMT does not recommend excavating deeper than the groundwater table, or approximately 15 feet bgs, to prevent cross-contamination of potentially uncontaminated groundwater. Contaminated soil should be removed from the Subject Property, transported, and disposed of at a registered landfill accepting petroleum contaminated soil. Excavated materials should then be replaced with imported clean fill. Remedial Action #2: Soil Vapor Intrusion Mitigation. The potential health risk associated with present or future soil vapor concentrations should be evaluated with a Human Health Risk Assessment. Given the planned commercial redevelopment of the Subject Property from the current fueling station, convenience store, and service garage into a new fueling station and convenience store, the potential is considered to be high for adverse human exposure to gasoline and diesel contamination in the shallow subsurface soils or as vapor intrusion into possible future structures at the Subject Property. In combination with the previous Action to remove hydrocarbon source contamination, a vapor membrane barrier and sub-slab vapor extraction system venting can be installed to prevent intrusion of gasoline and diesel hydrocarbon vapors into future occupied commercial structures. Limited Subsurface Investigation, Phase II Environmental Site Assessment CMT Technical Services CMT Project 23501: Maverik Clearfield 1350 East January 17, 2025 vii Table of Contents EXECUTIVE SUMMARY ............................................................................................................................................... i Project Background ............................................................................................................................................................. ii Scope of Work ..................................................................................................................................................................... ii Analytical Results ............................................................................................................................................................... iii Conclusions ........................................................................................................................................................................ iv Recommendations ............................................................................................................................................................. iv 1.0-INTRODUCTION ....................................................................................................................................................1 1.1. General Site Location, Vicinity, and Description .......................................................................................................... 1 1.2 Background ................................................................................................................................................................... 3 1.3 Historical Recognized Environmental Conditions (HRECs)............................................................................................ 4 1.4 Site Recognized Environmental Conditions (RECs) ....................................................................................................... 7 1.5 Commonly Used Acronyms ........................................................................................................................................... 8 2.0-SCOPE OF WORK ..................................................................................................................................................9 2.1 Objective ....................................................................................................................................................................... 9 2.2 Pre-Field Activities ....................................................................................................................................................... 10 2.2.1 Blue Stakes Notification ....................................................................................................................................... 10 2.2.2 Utility and Subsurface Scan .................................................................................................................................. 11 2.3 Sample Locations and Designations ............................................................................................................................ 11 2.4 Sample Collection Procedures .................................................................................................................................... 12 2.4.1 Soil Sample Collection .......................................................................................................................................... 14 2.4.2 Groundwater Sample Collection .......................................................................................................................... 14 2.4.3 Documentation and Sample Custody ................................................................................................................... 15 2.5 Laboratory Analyses .................................................................................................................................................... 15 3.0-SOIL SAMPLING RESULTS .................................................................................................................................... 16 3.1 Field Observations ....................................................................................................................................................... 16 3.2 Analytical Data Results ................................................................................................................................................ 17 3.2.1 TPH-GRO, TPH-DRO, TRPH, and Oil & Grease ...................................................................................................... 17 3.2.2 VOCs: BTEXN and Full List .................................................................................................................................... 18 3.2.3 Total Metals (RCRA-D List 8) ................................................................................................................................ 22 4.0-GROUNDWATER SAMPLING RESULTS ................................................................................................................. 23 4.1 Field Observations ....................................................................................................................................................... 23 4.2 Analytical Data Results ................................................................................................................................................ 23 4.2.1 TPH-GRO, TPH-DRO, TRPH, and Oil & Grease ...................................................................................................... 24 4.2.2 VOCs: BTEXN and Full List .................................................................................................................................... 25 4.2.3 Total Metals (RCRA-D List 8) ................................................................................................................................ 28 5.0-CONCLUSIONS AND RECOMMENDATIONS .......................................................................................................... 29 5.1 Conclusions ................................................................................................................................................................. 29 5.2 Recommendations ...................................................................................................................................................... 33 6.0- LIMITATIONS ..................................................................................................................................................... 35 7.0-CLOSURE ............................................................................................................................................................ 36 8.0-REFERENCES ....................................................................................................................................................... 37 Limited Subsurface Investigation, Phase II Environmental Site Assessment CMT Technical Services CMT Project 23501: Maverik Clearfield 1350 East January 17, 2025 viii FIGURES Figure 1: Vicinity Map Figure 2: Site Map Figure 3: Borings Locations Map TABLES Table 1: Boring and Sample Locations Summary Table 2: Soil Sample Analytical Results for TPH-GRO, TPH-DRO, O&G, and TRPH Table 3: Soil Sample Analytical Results for VOCs (MBTEXN Compounds) Table 4: Soil Sample Analytical Results for VOCs (Full List) Table 5: Soil Sample Analytical Results for Total Metals (RCRA-D List 8) Table 6: Groundwater Sample Analytical Results for TPH-GRO, TPH-DRO, O&G, and TRPH Table 7: Groundwater Sample Analytical Results for VOCs (MBTEXN Compounds) Table 8: Groundwater Sample Analytical Results for VOCs (Full List) Table 9: Groundwater Sample Analytical Results for Total Metals (RCRA-D List 8) APPENDICES Appendix A: Supporting Documentation UDEQ Initial Screening Levels (ISLs) and Tier 1 Screening Criteria, November 2005 EPA Regional Screening Levels (RSLs) Summary Table, November 2024 Soil Boring Logs (B-1 through B-11) Site Photographs Appendix B: Analytical Data Detailed Laboratory Soil and Groundwater Analytical Reports – Chemtech-Ford Laboratories Limited Subsurface Investigation, Phase II Environmental Site Assessment CMT Technical Services CMT Project 23501: Maverik Clearfield 1350 East January 17, 2025 1 1.0-INTRODUCTION CMT Technical Services (CMT) has prepared the following Limited Subsurface Investigation (LSI) Phase II Environmental Site Assessment (ESA) describing the results of subsurface assessment activities conducted on a commercial site containing a Chevron-branded fueling station, a convenience store, and an automobile service and repair garage. CMT was authorized by Hunt Day Engineering (Hunt Day, the “Client”) to perform these services according to CMT’s Statement of Work for Limited Phase II Environmental Site Assessment and ACM Inspection and Testing dated November 13, 2024 (CMT, 2024). This report outlines the results from the LSI, which was requested in association with the Client’s interest in purchasing and redeveloping the Site (hereafter referred to as the “Subject Property”) as a Maverik-branded fueling station and convenience store. This report was prepared for the Client and it may not be utilized or relied upon by any other person or entity without the prior written permission of CMT. This report includes discussions concerning CMT’s investigative methods, the scope of work performed, and the analytical results of the collected samples. This report concludes CMT’s services on this portion of this project. 1.1. General Site Location, Vicinity, and Description The Subject Property (Utah Department of Environmental Quality [UDEQ] Division of Environmental Response and Remediation [DERR] Facility ID No. 3000089) is located at the listed addresses of 1350 and 1352 East 700 South in Clearfield, Davis County, Utah. The entire Subject Property is trapezoidal and comprised of two parcels totaling approximately 1.2 acres, with the Davis County Parcel ID Numbers 094350001 and 094350002. The Subject Property parcels are listed as owned by Dreamworks 1350 Clearfield LLC and Ida Holdings LLC (Interstate Diesel and Automotive), respectively. The Subject Property is bordered on the on the north by East 700 South Street (Utah State Route 193), on the east by a large parking lot for the Living Spaces furniture store to the southeast, on the south by the Clearfield Canal Trail then the Pepper Ridge Apartments, and on the west by the Clearfield Canal Trail, then an Enbridge high-pressure natural gas pipeline valve station. The Subject Property lies at an elevation of approximately 4,561.5 feet above mean sea level (amsl), and overall is relatively flat with a downward slope to the southwest. The Subject Property is found at latitude: Limited Subsurface Investigation, Phase II Environmental Site Assessment CMT Technical Services CMT Project 23501: Maverik Clearfield 1350 East January 17, 2025 2 41.10294758° North and longitude -112.0002812° West. The vicinity and approximate location of the Subject Property is shown on Figure 1 below. The Subject Property is zoned as commercial, and is currently developed with a Chevron-branded fueling and service station, a convenience store (JP’s Food Mart), and an attached automobile service and repair garage business. The fueling station includes an east-west oriented fueling station canopy with four gasoline dispenser pump islands, three gasoline underground storage tanks (USTs), one separate off-road diesel dispenser pump island, one off-road diesel UST, one liquified propane (LP) aboveground storage tank (AST) with dispenser, and one detached drive-through car wash building (closed). According to Davis County records, the single-level convenience store portion of the building is 2,244 square feet (sq. ft.) and the single-level service garage and office portion of the building is 5,290 sq. ft. The detached car wash structure is 736 sq. ft. and is located on the northwest portion of the site, northwest of the convenience store building. The existing fuel pump islands with canopy cover are located on the northern margin of the site, and the existing USTs are located adjacent to the northeast of the convenience store building. The off-road diesel UST is located along the eastern margin of the site, east of the convenience store building. FIGURE 1. VICINITY MAP W. 3000 North (UT-193) Subject Property E. 700 South (UT-193) N Limited Subsurface Investigation, Phase II Environmental Site Assessment CMT Technical Services CMT Project 23501: Maverik Clearfield 1350 East January 17, 2025 3 The buildings and structure are surrounded by a shared parking lot and driveways, mostly asphalt pavement with some concrete paving over the fueling station surfaces. Landscaping along the west and south edges consists of bare soil and weeds. Lot access is by concrete driveways on the north side and on the east side from the furniture store parking lot. The fueling station is Chevron-branded and currently contains four USTs: one 10,000-gallon regular gasoline UST installed in April 1966, one 10,000-gallon premium gasoline UST installed in April 1966, one 8,000-gallon diesel UST installed in April 1974, one 2,000-gallon non-ethanol gasoline UST installed in April 1986, four self-service gasoline dispenser pump islands, one self-service diesel dispenser pump island, and associated underground piping. All USTs are listed as cathodically-protected steel with double-walled flexible plastic product piping. The approximate boundaries and labeled site features of the entire Subject Property are shown on Figure 2 below. FIGURE 2 – SITE MAP 1.2 Background Historically, the Subject Property was vacant or agricultural land since at least 1937. The Subject Property has operated as a fueling station and convenience store since mid-1966. The automobile service and repair garage has been open since 1980 under the name JP’s American Car Care. The original canopy was oriented north-south attached to the northern side of convenience store and had four west-east oriented dispenser islands. N IN T E R S T A T E 1 5 off -ra m p Approx. Site Boundary E. 700 South (UT-193) Canopy Ca r W a s h Store Office Ga r a g e Limited Subsurface Investigation, Phase II Environmental Site Assessment CMT Technical Services CMT Project 23501: Maverik Clearfield 1350 East January 17, 2025 4 The second store building was added onto to or replaced the first sometime in 1984-1985. The service garage structure was constructed sometime between 1985 and 1993. The original north-south oriented canopy and dispenser islands were removed and replaced with the current west-east oriented structure in 2000. The fueling station formerly contained one 500-gallon used oil steel UST from December 1964 to October 1999. A former diesel dispenser was also located northeast of the current off-road diesel UST. The Subject Property is located to the south of the southwest corner of Hill Air Force Base (HAFB). The south boundary of HAFB is on the north side of 700 South, just north of the Subject Property. According to United States Environmental Protection Agency (EPA) records pertaining to known and documented groundwater contamination plumes extending from HAFB and into surrounding communities, the Subject Property is not located within any of the documented plume areas. The nearest documented groundwater contamination plume has been designated Operable Unit 8 (OU-8) and is more than 4,000 feet east-southeast of the Subject Property and does not project towards it. The geology of the Subject Property is mapped as: Qldp - Deltaic deposits related to the Provo (regressive) phase of the Bonneville lake cycle (upper Pleistocene): Thin to thick beds of moderately to well-sorted, moderately to well-rounded sand, silty sand, and gravelly sand; locally overlain by a thin veneer of eolian sand and partly cemented with calcium carbonate. Based on available water well logs in the vicinity, the depth to groundwater at the Subject Property was estimated to be between 20 and 30 feet below ground surface (bgs). Regional groundwater flow is inferred to be generally toward the south-southwest at the location of the Subject Property based on topography. 1.3 Historical Recognized Environmental Conditions (HRECs) HREC: 2000 Historic Petroleum Release LFC In March 2000, the product lines were upgraded at the Subject Property. Line closure soil sampling results indicated the presence in the soil of Total Petroleum Hydrocarbons-Gasoline Range Organics (TPH-GRO), Total Petroleum Hydrocarbons-Diesel Range Organics (TPH-DRO), and xylenes. Release LFC was opened. On May 24, 2000, the UDEQ-DERR issued a Closure Memo for Release LFC. The contaminant concentrations detected were concluded to be relatively insignificant. Maximum contaminant concentrations were below the Recommended Cleanup Levels (RCLs) except one sample that was slightly above RCLs but below Tier 1 Screening Levels (T1SLs). TPH concentrations were judged to be low enough that significant petroleum contamination does not exist or remains on the Subject Property, and what does remain does not constitute a current or Limited Subsurface Investigation, Phase II Environmental Site Assessment CMT Technical Services CMT Project 23501: Maverik Clearfield 1350 East January 17, 2025 5 potential threat to human health or the environment. The DERR recommended a Leaking UST (LUST) file closeout and that no LUST file was to be maintained. HREC: 2013 Historic Petroleum Release MZS On November 23, 2011, the UDEQ–DERR conducted an UST inspection found various compliance issues, including diesel fuel accumulation observed in the diesel UST sump, indicating a release to the environment may have occurred. Other compliance issues included: water accumulation in the E85 gasoline UST sump that makes it inoperable, cracking damage to the spill buckets in the E85 and premium gasoline USTs, product accumulation and debris in all dispenser sumps, incompatibility of E85 gasoline with steel USTs, the leak detection is not certified for E85 gasoline, and periodic testing of the cathodic corrosion protection system. On March 7, 2012, the UDEQ–DERR issued a Notice of Non-Compliance for the compliance issues documented in the November 2011 inspection. On May 4, 2012, the UDEQ–DERR issued a Notice of Violation and Order to Comply for the unaddressed compliance issues. By September 2012, repairs on the violations had been partially completed. UST and dispenser sumps were pumped and cleaned, and the spill buckets were replaced. Inspection and testing of the cathodic corrosion protection system was planned but not completed. In December 2012, the 2000-gallon E85 gasoline UST was emptied. On January 16, 2013, the UST testing company PEC performed a containment sump test on the diesel UST. The test indicated the presence of diesel product in the containment sump and a faulty penetration boot where the product piping enters the sump around the submersible turbine pump. A hydrostatic test also failed and indicated that diesel fuel could have leaked out around the faulty boot. The boot was repaired immediately and a retest passed inspection. Release MZS was opened. On February 19, 2013, Rockwell Solutions, Inc. supervised drilling of two direct push soil borings, B-1 and B-2, to 20 feet bgs. B-1 was placed between the diesel UST (near the diesel sump) and pump #7, and B-2 was placed west (downgradient) of the diesel UST. Soil samples collected from 10, 15, and 20 feet bgs from each boring and analyzed for TPH-GRO, TPH-DRO, benzene, toluene, ethylbenzene, total xylenes, and naphthalene (BTEXN), and methyl-tert-butyl ether (MTBE). Groundwater was encountered in B-2at 15 feet bgs and a sample collected. TPH-GRO was detected at 4,270 milligrams per kilogram (mg/kg) in B-2 at a depth of 9 to 10 feet bgs. TPH DRO was also detected in B-1 at 10 feet bgs but was below T1SLs. BTEXN and MTBE concentrations were detected Limited Subsurface Investigation, Phase II Environmental Site Assessment CMT Technical Services CMT Project 23501: Maverik Clearfield 1350 East January 17, 2025 6 in B-2 but were also below T1SLs. Groundwater also had hydrocarbon detections below T1SLs. A Subsurface Report was issued by Rockwell dated March 9, 2013. On July 30, 2013, the UDEQ–DERR issued a Letter of No Further Action (NFA) for Release MZS. Based on the laboratory results and the field observations, there has been no impact to the subsurface from the leaking diesel boot. The small zone of old gasoline contamination at B-2 has been vertically defined. The groundwater sample collected at B-2 indicates groundwater has not been significantly impacted. Petroleum contaminated soil remains from this release but at depths and locations such that it does not constitute a current or potential threat to human health or the environment. A “restricted area” related to this contamination was implemented and any large-scale excavation within the restricted area requires notification of the UDEQ prior to excavation work. Based on the closure status of the two reported releases, these are not anticipated to pose an environmental risk nor to represent a recognized environmental condition (REC) in connection the Subject Property, as the both Releases LFC and MZS returned results below Utah T1SLs. However, these releases do appear to represent historical RECs (HRECs) in connection the Subject Property. This conforms to the definition of an HREC as given in American Society of Testing and Materials (ASTM) Standard E 1527-21: “A previous release of hazardous substances or petroleum products affecting the subject property that has been addressed to the satisfaction of the applicable regulatory authority or authorities and meeting unrestricted use criteria established by the applicable regulatory authority or authorities without subjecting the subject property to any controls (for example, activity and use limitations or other property use limitations).” Post Release History: 2013-2024 On June 27, 2017, the spill fill bucket was replaced on the 2000-gallon UST, now containing ethanol-free gasoline. Hydrostatic and vacuum testing were also conducted following installation. On September 24, 2018, the UDEQ–DERR issued a Notice of Non-Compliance for documentation of removal of liquid from the spill bucket of the 2000-gallon UST and posting an emergency contact sign. On March 5, 2019, the UDEQ–DERR issued a Notice of Non-Compliance for documentation of UST Class A operator certification training, exam, and registration. Limited Subsurface Investigation, Phase II Environmental Site Assessment CMT Technical Services CMT Project 23501: Maverik Clearfield 1350 East January 17, 2025 7 On July 30, 2019, the UDEQ–DERR issued a Notice of Non-Compliance for documentation of identification, removal, and disposal of liquid from the spill bucket of the 2000-gallon UST, and any necessary repairs conducted. The spill bucket was replaced and hydrostatic testing was conducted on October 22, 2019. On April 13, 2021, the UDEQ–DERR issued a Notice of Non-Compliance for documentation of UST Class A operator certification training, exam, and registration. On August 9, 2021, the UDEQ–DERR issued a Notice of Violation and Order to Comply for the unaddressed operator certification issues. 1.4 Site Recognized Environmental Conditions (RECs) CMT recently completed one Phase I ESA report for the Subject Property, dated January 17, 2025 (CMT, 2025). Based on the observations, research, and interviews conducted while performing the Phase I ESA, three (3) potential RECs, as defined by the ASTM Standard E 1527-21, were identified in connection with the Subject Property. During the site reconnaissance, the storage/use of gasoline, diesel, waste oil, and various vehicle/equipment maintenance fluids were observed on the Subject Property. Storage containers observed on the Subject Propety included one plastic 500-gallon AST, several 55-gallon drums, many 5-gallon motor oil buckets, many 1-gallon fluid jugs, and many other smaller cans, bottles, and jugs of hazardous substances. The three identified RECs are: 1. Waste Oil AST: A plastic 500-gallon AST containing waste oil was located on the south side of the convenience store and the northwest side of the service and repair garage. A steel pool secondary containment was present for the AST, and the pool was partially filled with a scummy water-oil mixture. The AST and containment pool had significant surficial oil staining and a strong odor of petroleum was present around the AST and pool. 2. Storage and Use of Petroleum Hydrocarbons: Surficial oil staining, likely from dripping vehicles or spill- over from vehicle maintenance, was observed at numerous locations across the Subject Property, particularly inside the service and repair garage. Other hazardous substances or petroleum products observed on the Subject Property included lubricating oils, grease, degreasing solvents, detergents, fuel additives, antifreeze, and other vehicle/equipment maintenance fluids. 3. Sump Drains: Additionally, multiple sump drains were observed inside the garage along the north-south centerline of the building. All the drains contained some unidentified dark fluids. Petroleum hydrocarbons and other contaminated fluids could collect and seep into the underlying soil and groundwater from these sump drains. Limited Subsurface Investigation, Phase II Environmental Site Assessment CMT Technical Services CMT Project 23501: Maverik Clearfield 1350 East January 17, 2025 8 Until the extent of potential contamination on the Subject Property can be determined, the RECs identified above should also be considered a source of a potential groundwater plume, subsurface vapor migration, and of potential vapor intrusion into any future structures that may be constructed there, such as the proposed Maverik fueling station. 1.5 Commonly Used Acronyms The following list contains some of the commonly used acronyms used in this report and supporting documentation. This list is not considered to be all inclusive. amsl above mean sea level AST aboveground storage tank ASTM American Society of Testing and Materials bgs below ground surface CMT CMT Technical Services, Inc. COC contaminant of concern CVAA cold-vapor atomic absorption DERR Division of Environmental Remediation and Response (UDEQ) DPS Direct Push Services, Inc. E85 gasoline mixture containing 85% ethanol and 15% gasoline EP environmental professional EPA Environmental Protection Agency ESA Environmental Site Assessment FID flame ionization detector GC/FID Gas Chromatography/Flame Ionization Detector GC/MS Gas Chromatography/Mass Spectrometry GPR ground penetrating radar HAFB Hill Air Force Base HCl hydrochloric acid HNO3 nitric acid HREC Historic Recognized Environmental Condition Hunt Day Hunt Day Engineering, Inc. (The Client) ICP/MS Inductively Coupled Plasma/Mass Spectrometry ISL Initial Screening Level (DERR) LDPE low-density polyethylene LP liquefied propane LPST Leaking Petroleum Storage Tank (UDEQ) LRL laboratory reporting limit LSI Limited Subsurface Investigation LUST leaking underground storage tank MBTEXN MTBE, benzene, toluene, ethyl benzene, total xylenes, and naphthalene MCL Maximum Contaminant Level (EPA) MEK methyl ethyl ketone Limited Subsurface Investigation, Phase II Environmental Site Assessment CMT Technical Services CMT Project 23501: Maverik Clearfield 1350 East January 17, 2025 9 MIBK Methyl Isobutyl Ketone mg/kg milligrams per kilogram mg/L milligrams per liter mL milliliter MTBE methyl tert-butyl ether ND < Not Detected (result lower than given laboratory reporting limit) NE regulatory limit is Not Established NFA No Further Action O&G Oil & Grease OU Operable Unit (HAFB plume) PCE tetrachloroethene PID photoionization detector ppm parts per million RBSSL Risk-Based Selective Screening Level RCRA Resource Conservation and Recovery Act RCL Recommended Cleanup Level (UDEQ) REC Recognized Environmental Condition (as defined in ASTM Standard E 1527-21) RSL Regional Screening Level (EPA) SGT-HEM silica gel treated-hexane extractable material sq. ft. square feet T1SLs Tier 1 Screening Levels (UDEQ) TCE trichloroethene TCR Target Cancer Risk THQ Target Hazard Quotient TPH-DRO Total Petroleum Hydrocarbons, Diesel-Range Organics TPH-GRO Total Petroleum Hydrocarbons, Gasoline-Range Organics TRPH Total Recoverable Petroleum Hydrocarbons UDEQ Utah Department of Environmental Quality µg/L micrograms per liter U.S. United States USCS Unified Soil Classification System UST underground storage tank VOA volatile organic analysis VOC volatile organic compound 2.0-SCOPE OF WORK 2.1 Objective Due to the Subject Property’s known use as a fueling station and automobile service garage, the presence of current or historical RECs was anticipated by the client. CMT was contracted by Hunt Day to conduct an LSI on the Subject Property. The purpose of the LSI assessment activities was to evaluate, characterize, and delineate the nature, Limited Subsurface Investigation, Phase II Environmental Site Assessment CMT Technical Services CMT Project 23501: Maverik Clearfield 1350 East January 17, 2025 10 source, and extent, to the degree possible (both horizontally and vertically), of various potential impacts to the soil and groundwater underneath the Subject Property stemming from potential releases from the historical and current operation of a fueling station, car wash (potential clarifier/oil-water separator), and automobile service and repair garage (potential sub-grade hydraulic lifts and/or grease traps/sump drains) on the Subject Property. Releases may originate from the on-site storage and dispensing of potential contaminants, including, but not limited to: petroleum hydrocarbons such as gasoline, diesel fuel, lubricating oils and grease, and waste oil, as well as volatile organic compounds (VOCs) such as degreasing solvents, detergents, fuel additives, and vehicle/equipment maintenance fluids, and heavy metals. Possible sources for these potential contaminants include the current on-site fueling station operations on the north side, the historical car wash operations on the northwest corner, and the current service and repair garage operations on the south side of the Subject Property. These uses of the Subject Property could also represent a source of potential vapor intrusion and/or migration if related contamination is present in the subsurface. On November 13, 2024, CMT submitted a Statement of Work for Limited Phase II Environmental Site Assessment and ACM Inspection and Testing proposal for the Subject Property (CMT, 2024). The scope of services for this project was based on CMT’s recommendations made in the Statement of Work. To accomplish this objective, samples of the shallow subsurface soils and groundwater were proposed to be collected for analysis to determine the presence, location, and concentrations of the selected contaminants of concern (COCs). The scope of work for this assessment included:  Notifying Utah Blue Stakes to identify and mark subsurface public utilities;  Conducting a site scan utilizing utility-sensing equipment;  Advancing eleven (11) boreholes (B-1 through B-11) on the Subject Property to the groundwater depth;  Logging lithologies of soil collected during probing operations;  Analyzing selected soil and groundwater samples for selected COCs;  Preparing this report summarizing the assessment procedures and findings. 2.2 Pre-Field Activities 2.2.1 Blue Stakes Notification Approximately one week prior to conducting the site investigation, CMT contacted Blue Stakes of Utah to identify, locate, and mark all underground public utilities around and within the Subject Property assessment Limited Subsurface Investigation, Phase II Environmental Site Assessment CMT Technical Services CMT Project 23501: Maverik Clearfield 1350 East January 17, 2025 11 area. Blue Stakes of Utah notifies local underground utility companies of the anticipated work. The utility company locators identified and marked underground utilities around the Subject Property for natural gas, water, electrical, traffic lighting, communications lines, and sanitary sewer. 2.2.2 Utility and Subsurface Scan CMT contracted with Chad Russell of Direct Push Services, Inc. (DPS) of South Salt Lake, Utah, to conduct a subsurface scan of the Subject Property utilizing utility-sensing equipment to attempt to locate and identify any buried and unmarked underground structures, utilities, piping, USTs and/or disturbed ground that exist on the Subject Property premises. The utility scan was performed on December 3, 2024, one week before drilling activities commenced. The utility scan, including a magnetometer and ground-penetrating radar (GPR), was conducted in the areas of proposed boreholes and indicated the presence and locations of unmarked underground utilities and/or buried features around and through the proposed work areas. The boring locations were situated to avoid these buried utilities but be as close as possible to the proposed locations of the infrastructure of the fueling station, car wash, and service garage. Borings were not placed outside of the Subject Property boundaries. 2.3 Sample Locations and Designations Due to the Subject Property’s known use as a fueling station and automobile service garage, the presence of potential current or historical RECs was anticipated by the Client. Based on the findings of the Phase I ESA (CMT, 2025), CMT recommended additional investigation be conducted to evaluate the degree of potential soil impacts to the Subject Property. CMT proposed to advance up to eleven (11) boreholes to groundwater depth, or refusal, for collection of soil and groundwater samples from the subsurface. Each soil boring was sequentially designated by CMT as B-1 through B-11, photographed, and the approximate latitude/longitude coordinates recorded. All borings were advanced measuring approximately two-inches in diameter to approximately 20 feet bgs. Each boring was located as follows:  Soil boring B-1 was completed downgradient of the service and repair garage, to evaluate for impact migrating from the garage.  Soil boring B-2 was completed adjacent to and downgradient of the waste oil AST, to evaluate for impact from the AST or spills.  Soil boring B-3 was completed adjacent to and north of the closed car wash building, to evaluate for impact from the clarifier/oil-water separator. Limited Subsurface Investigation, Phase II Environmental Site Assessment CMT Technical Services CMT Project 23501: Maverik Clearfield 1350 East January 17, 2025 12  Soil borings B-4, B-5, B-6, and B-7 were completed adjacent to and downgradient of each gasoline dispenser, to evaluate for impact from the dispensers or product piping. Soil boring B-5 was also in the location of the north side of the original dispenser canopy, to evaluate for residual historic impact from the former dispenser location.  Soil boring B-8 was completed in the location of the south side of the original dispenser canopy, to evaluate for residual historic impact from the former dispenser location.  Soil boring B-9 was completed adjacent to and downgradient of the gasoline USTs, to evaluate for impact from the USTs or spills.  Soil boring B-10 was completed adjacent to and downgradient of the gasoline USTs and the diesel dispenser, to evaluate for impact from the USTs and diesel dispenser.  Soil boring B-11 was completed adjacent to and downgradient of the diesel UST, to evaluate for impact from the UST or spills. Soil boring location data is listed on Table 1 below. The approximate locations of the soil boring locations are shown in Figure 3 on page 13. TABLE 1 – BORING AND SAMPLE LOCATIONS SUMMARY BORING ID AREA OF CONCERN TOTAL DEPTH SAMPLE DEPTH DEPTH TO WATER APPROXIMATE GPS LOCATION B-1 Downgradient of service and repair garage. 20’ 17.5’ 17.5’ 41.102755° N 112.000405° W B-2 Downgradient of and adjacent to waste oil AST. 20’ 10’ 16’ 41.103000° N 112.000385° W B-3 North of car wash, adjacent to oil-water separator/clarifier. 20’ 8.5’ 15’ 41.103325° N 112.000570° W B-4 Downgradient of and adjacent to dispenser #1. 20’ 8.0’ 15’ 41.103285° N 112.000450° W B-5 Downgradient of and adjacent to dispenser #3. Approximate location of original canopy and north dispenser. 20’ 8.0’ 15’ 41.103285° N 112.000360° W B-6 Downgradient of and adjacent to dispenser #5. 20’ 12’ 15’ 41.103285° N 112.000260° W B-7 Downgradient of and adjacent to dispenser #7. 20’ 8.5’ 14’ 41.103285° N 112.000185° W B-8 Approximate location of original canopy and south dispenser. 20’ 10’ 15’ 41.103205° N 112.000360° W B-9 Downgradient of gasoline USTs. 20’ 10’ 15’ 41.102205° N 112.000260° W B-10 Downgradient of gasoline and diesel USTs and diesel dispenser. 20’ 9.75’ 15’ 41.103130° N 112.000130° W B-11 Downgradient of and adjacent to diesel UST. 20’ 10’ 15’ 41.103110° N 112.000055° W 2.4 Sample Collection Procedures On December 10 and 11, 2024, an environmental professional (EP) from CMT supervised a drill rig and operator from DPS, a State of Utah-certified drilling company, during field sampling activities. Drilling and field sampling was conducted by DPS utilizing a Geoprobe™ Model 7822DT track-mounted direct-push drill rig equipped with two-inch diameter, five-foot-long direct-push rods. Each boring was continuously sampled using a Macro Limited Subsurface Investigation, Phase II Environmental Site Assessment CMT Technical Services CMT Project 23501: Maverik Clearfield 1350 East January 17, 2025 13 Sampler equipped with an acetate sleeve for lithologic observation and sampling. Each soil boring was advanced to the depth of encountered groundwater, approximately between 14 and 17.5 feet bgs, and then advanced to a depth of 20 feet bgs to collect a sufficient quantity of groundwater for sampling. FIGURE 3 – BORINGS LOCATION MAP N Current product pipes B-1 Former canopy B-4 B-5 B-2 B-6 B-10 B-11 B-9 B-8 Ca r W a s h (c l ose d ) Convenience Store Garage Office and Storage Service and Repair Garage Canopy & pumps Soil and Groundwater Boring Approx. Site Boundary B-3 Storage B-7 Storage Former diesel pump Former pumps and piping Limited Subsurface Investigation, Phase II Environmental Site Assessment CMT Technical Services CMT Project 23501: Maverik Clearfield 1350 East January 17, 2025 14 2.4.1 Soil Sample Collection Soils encountered were field logged and classified by the CMT EP/Geologist for soil type using visual-manual procedures based on the Unified Soil Classification System (USCS). Soil boring logs were completed to record the lithology (including grain size, moisture content, soil color, consistency, staining, and odor), sample recovery, and other field observations. For soil boring logs, refer to Appendix A – Supporting Documentation. Sampling methods adhered to standard environmental sampling protocols. The soil samples were collected by hand, wearing new nitrile gloves, utilizing decontaminated hand tools, and were all collected in native soils that had not been disturbed by construction or development activity. For headspace analysis, a portion of each four- or five-foot Macro Sampler was placed into a Zip-Loc ™-type plastic bag, sealed, and labeled. The sealed bags were allowed to sit in the direct sunlight, where VOC concentrations were allowed to equilibrate within the bag headspace. A portable photoionization detector (PID) was used to monitor the soil for VOC vapors to evaluate the extent of potential petroleum hydrocarbon contamination. After approximately five minutes, the headspace inside each bag was screened with the PID. One soil sample for laboratory analysis was collected from each borehole. The exact depth of each sample varied per borehole and was based on identification of potential impact through field observations of color, staining, moisture, odor, and/or PID reading. Every sample collected at the site was identified with a sample label, with the sample identification number corresponding with the sample location, the depth collected, and the collection date and time. Field duplicate samples were not collected. Soil samples were collected for analysis into laboratory-provided two-ounce and four-ounce clear glass jars with Teflon-lined lids, and no preservative. Each soil sample set collected was placed into an ice-chilled cooler for transport following proper chain-of-custody documentation procedures, and were hand-delivered to Chemtech-Ford Laboratories of Sandy, Utah, a Utah-certified laboratory. 2.4.2 Groundwater Sample Collection Groundwater was encountered in all boreholes at depth of approximately between 14 and 17.5 feet bgs. After completion of the soil borings, a temporary stainless-steel slotted well screen was set into each borehole. A fresh and clean screen was used at each boring. A disposable, 0.25-inch diameter low-density polyethylene (LDPE) tubing was inserted through the steel well screen. Groundwater was pumped out using a Geotech ™ Series II Peristaltic Pump until residual silt decreased and the water became clear. Limited Subsurface Investigation, Phase II Environmental Site Assessment CMT Technical Services CMT Project 23501: Maverik Clearfield 1350 East January 17, 2025 15 One groundwater sample was collected from each borehole for laboratory analysis. Groundwater samples were collected using low-flow techniques into the following laboratory-provided sample bottles:  Four (4) 40-milliliter (mL) amber glass volatile organic analysis (VOA) vial sample bottles, with Teflon- septum lids, and hydrochloric acid (HCl) preservative.  One (1) 1,000-mL amber glass bottle, with a Teflon-lined lid, and HCl preservative.  One (1) 500-mL polyethylene bottle, with a Teflon-lined lid, and nitric acid (HNO 3) preservative. Every sample collected at the site was identified with a sample label, with the sample identification number corresponding with the sample location, and the collection date and time. Bottles intended for Total Metals were filtered in the laboratory. Field duplicate groundwater samples were not collected. Each groundwater sample set collected was placed into an ice-chilled cooler for transport following proper chain-of-custody documentation procedures, and were hand-delivered to Chemtech-Ford Laboratories of Sandy, Utah. Following the collection of soil and groundwater samples, each borehole was backfilled with granular bentonite chips and hydrated to the surface to seal the boring. The surface was capped with cold-patch asphalt and smoothed to match the pre-existing surface. 2.4.3 Documentation and Sample Custody All soil and groundwater samples were transported and delivered with an appropriately-completed chain-of- custody documentation record. Sample chain-of-custody procedures were followed to account for each sample during collection, storage, handling, and shipping. When transferring sample possession, the persons relinquishing and receiving the samples each signed, dated, and recorded the time on the chain-of-custody record. This record also served as a laboratory request form specifying the analyses requested for each set of samples. 2.5 Laboratory Analyses The soil samples were analyzed for the following selected COCs:  VOCs Full List by EPA Methods 8260D/5030B by Gas Chromatography/Mass Spectrometry (GC/MS);  TPH-GRO (C5-C10) Fractionation by EPA Methods 8260D/5030B by GC/MS;  TPH-DRO (C10-C28) by EPA Method 8015C by Gas Chromatography/Flame Ionization Detector (GC/FID);  Soil sample locations B-1, B-2, and B-3, due to their respective proximities to the service garage, waste oil AST, and car wash clarifier/oil-water separator, were additionally analyzed for: Limited Subsurface Investigation, Phase II Environmental Site Assessment CMT Technical Services CMT Project 23501: Maverik Clearfield 1350 East January 17, 2025 16 o Oil and Grease (O&G) and silica gel treated-hexane extractable material (SGT-HEM), also known as Total Recoverable Petroleum Hydrocarbons (TRPH), both by EPA Method 1664B-Mod; and o Total Metals, Resource Conservation and Recovery Act (RCRA)-D List 8 for arsenic, barium, cadmium, chromium, lead, selenium, and silver by EPA Methods 6020A/3050B by Inductively Coupled Plasma/Mass Spectrometry (ICP/MS), and for mercury by EPA Method 7471A by cold- vapor atomic absorption (CVAA). The groundwater samples were analyzed for the following selected COCs:  VOCs Full List by EPA Methods 8260D/5030B by GC/MS;  TPH-GRO Fractionation (C5-C10) by EPA Methods 8260D/5030B by GC/MS;  TPH-DRO (C10-C28) by EPA Methods 8015C by GC/FID;  Groundwater sample locations B-1, B-2, and B-3, due to their respective proximities to the service garage, waste oil AST, and car wash clarifier/oil-water separator, were additionally analyzed for: o O&G and TRPH (SGT-HEM), by EPA Method 1664B; and o Total Metals, RCRA-D List 8 for arsenic, barium, cadmium, chromium, lead, selenium, and silver by EPA Methods 6010D/3010A by ICP/MS, and for mercury by EPA Method 7470A by CVAA. 3.0-SOIL SAMPLING RESULTS 3.1 Field Observations Visual evidence of VOC or hydrocarbon contamination, such as staining, was not observed in any of the collected soil samples. Olfactory evidence of VOC or hydrocarbon contamination, such as a strong petroleum odor, was observed in boreholes B-4 through B-9 at depths ranging between 7.25 and 10 feet bgs. Olfactory evidence was not observed in any of the other boreholes. The presence of VOCs was confirmed by PID measurements above 10 parts per million (ppm) in the same boreholes in the same depth range. A maximum reading of 1,711 ppm was recorded in boring B-7 at a depth of 7.25-8.5 feet bgs. Based on field observations made by CMT, the site geology is generally consistent across the Subject Property. The surface of the Subject Property is composed of approximately 3 to 6 inches of asphalt or 6 to 8 inches of concrete pavement. Below the pavement to approximately 6 to 15 feet bgs is artificial fill composed of poorly graded brown sand with silt (SP-SM) and silty sand (SM) with gravel, dark brown to light brown lean clay (CL), and well-graded gravels (GW). Native soil was encountered at a depth of approximately 7.5 to 15.5 feet bgs. The predominant native subsurface lithology consisted of dark brown lean silt (ML) and sandy silt, dark brown to brown lean clay (CL) and sandy clay, with lenses of moderately to well-sorted silty sand (SM), down to the total depth explored of 20 Limited Subsurface Investigation, Phase II Environmental Site Assessment CMT Technical Services CMT Project 23501: Maverik Clearfield 1350 East January 17, 2025 17 feet bgs. Groundwater was encountered between 13 and 17.5 feet bgs. Copies of the boring logs are provided in Appendix A – Supporting Documentation. 3.2 Analytical Data Results All soil analytical results were compared, where applicable, to the UDEQ Initial Screening Levels (ISLs) as established by the Utah Leaking Petroleum Storage Tank (LPST) Program, a regulatory branch of the UDEQ– DERR. Soil analytical results were also evaluated against the EPA Regional Screening Levels (RSLs) for Residential and Industrial Soils, with a Carcinogenic Screening Level of target cancer risk (TCR)=0.000001 (1E-06) and a target hazard quotient (THQ)=1.0. Contaminant screening levels for which a regulatory limit is Not Established are marked as “NE”. Copies of the UDEQ ISLs and Tier 1 Screening Levels (T1SLs), and EPA RSLs are provided in Appendix A – Supporting Documentation . Of note, samples were not evaluated against the less-restrictive T1SLs, as T1SLs are only applicable when there are no buildings, property lines, or utility lines within 30 feet, or water wells or surface water within 500 feet, of the highest measured concentration of any contaminant. These criteria do not apply to the Subject Property. In the case of the RCRA D-List of eight heavy metals, regional natural soil background levels are also provided for comparison. A summary of soil sample analytical data is provided in Tables 2 through 5. Soil sample result tables provide the applicable Utah ISLs and EPA RSLs, as well as the results from each sample and the depth at which each sample was taken. All results are listed in mg/kg, as specified in the laboratory reports. Results with “ND <” are Non- Detect concentrations below the specified laboratory reporting limit (LRL), results in bold are detections above the LRL, and results highlighted in pink are detections above the requisite ISL or RSL for the associated COC. The complete detailed laboratory analytical test results are included in the Appendix B - Analytical Data of this report. 3.2.1 TPH-GRO, TPH-DRO, TRPH, and Oil & Grease TPH-GRO (C5-C10) was analyzed by EPA Methods 8260D/5030B by GC/MS, and TPH-DRO (C10-C28) was analyzed by EPA Method 8015C by GC/FID. Due to their respective proximities to the service garage, waste oil AST, and car wash clarifier/oil-water separator, soil sample locations B-1, B-2, and B-3 were additionally analyzed for O&G (C20-C32) and SGT-HEM, also known as TRPH, both by EPA Method 1664B-Mod. Values for EPA RSLs have not Limited Subsurface Investigation, Phase II Environmental Site Assessment CMT Technical Services CMT Project 23501: Maverik Clearfield 1350 East January 17, 2025 18 been established for TPH-GRO, TPH-DRO, O&G, and TRPH. Soil sample analytical results for TPH-GRO, TPH-DRO, O&G, and TRPH are shown in Table 2 and are summarized as:  Concentrations of TPH-GRO were detected above the LRLs in all 11 soil samples. All concentrations were below the UDEQ ISL of 150 mg/kg except for B-7-8.5’, reported at 2,100 mg/kg.  Concentrations of TPH-DRO were detected above the LRLs in four soil samples: B-1-17.5’, B-2-10’, B-7- 8.5’, and B-8-10’. All concentrations were below the UDEQ ISL of 500 mg/kg except for B-7-8.5’, reported at 4,990 mg/kg.  O&G and TRPH were not detected above the LRLs in all soil samples. TABLE 2 – SOIL SAMPLE ANALYTICAL RESULTS FOR TPH-GRO, TPH-DRO, O&G, and TRPH ANALYTE UDEQ ISLs (mg/kg) SAMPLE # B-1- 17.5’ B-2- 10’ B-3- 8.5’ B-4- 8’ B-5- 8’ B-6- 12’ B-7- 8.5’ B-8- 10’ B-9- 10’ B-10- 9.75’ B-11- 10’ RESULTS (mg/kg, dry) TPH-GRO 150 0.13 0.26 0.18 0.35 0.21 0.06 2,100 2.61 0.17 0.08 0.12 TPH-DRO 500 103 71 ND <58 ND <58 ND <56 ND <56 4,990 111 ND <56 ND <59 ND <60 O&G 1,000 ND <308 ND <303 ND <291 NA NA NA NA NA NA NA NA TRPH 1,000 ND <308 ND <303 ND <291 NA NA NA NA NA NA NA NA UDEQ ISLs = Utah Department of Environmental Quality Initial Screening Levels mg/kg = milligrams per kilogram TPH-GRO = Total Petroleum Hydrocarbons-Gasoline-Range Organics TPH-DRO = Total Petroleum Hydrocarbons-Diesel-Range Organics O&G = Oil and Grease TRPH = Total Recoverable Petroleum Hydrocarbons ND <### = Not Detected (result lower than given laboratory reporting limit) NA = Not Analyzed BOLD = Detection above the Laboratory Reporting Limit = DetecƟon Above the requisite ISL 3.2.2 VOCs: BTEXN and Full List VOCs were analyzed by EPA Method 8260D/5030A by GC/MS. The list of VOCs includes, but was not limited to, the five BTEXN compounds. Soil sample analytical results for VOCs are shown in Tables 3 and 4. Soil sample analytical results for VOCs are summarized as:  Benzene was detected above the LRLs in soil samples B-1-17.5’, B-2-10’, B-3-8.5’, B-4-8’, B-7-8.5’, B-8-10’, B-10-9.75’, and B-11-10’. None exceeded the Utah ISL or EPA RSLs for residential or commercial/industrial soil except for sample B-7-8.5’. The concentration of benzene of 0.35 mg/kg in sample B-7-8.5’ exceeds the Utah ISL of 0.2 mg/kg, but neither of the EPA RSLs.  Toluene was detected above the LRLs in soil samples B-1-17.5’, B-2-10’, B-3-8.5’, B-4-8’, B-5-8’, B-7-8.5’, B-8-10’, B-10-9.75’, and B-11-10’. None exceeded the Utah ISL or EPA RSLs for residential or commercial/industrial soil.  Ethylbenzene was detected above the LRLs in soil samples B-2-10’, B-4-8’, B-5-8’, B-7-8.5’, and B-8-10’. None exceeded the Utah ISL or EPA RSLs for residential or commercial/industrial soil except for sample Limited Subsurface Investigation, Phase II Environmental Site Assessment CMT Technical Services CMT Project 23501: Maverik Clearfield 1350 East January 17, 2025 19 B-7-8.5’. The concentration of ethylbenzene of 39.7 mg/kg in sample B-7-8.5’ exceeds the Utah ISL of 5 mg/kg, and both of the EPA RSLs of 5.8 and 25 mg/kg, respectively.  Total xylenes was detected above the LRLs in soil samples B-1-17.5’, B-2-10’, B-3-8.5’, B-4-8’, B-5-8’, B- 6-12’, B-7-8.5’, B-8-10’, and B-11-10’. None exceeded the Utah ISL or EPA RSLs for residential or commercial/industrial soil except for sample B-7-8.5’. The concentration of total xylenes of 388 mg/kg in sample B-7-8.5’ exceeds the Utah ISL of 142 mg/kg, but neither of the EPA RSLs.  Naphthalene was detected above the LRLs in soil samples B-4-8’ and B-7-8.5’. The concentration of naphthalene in soil sample B-4-8’ did not exceed the Utah ISL or EPA RSLs for residential or commercial/industrial soil. The concentration of naphthalene of 62.0 mg/kg in sample B-7-8.5’ exceeds the Utah ISL of 51 mg/kg, and both of the EPA RSLs of 2.0 and 8.6 mg/kg, respectively.  1,2,4-trimethylbenzene was detected above the LRLs in soil samples B-4-8’, B-5-8’, B-7-8.5’, B-8-10’, and B-9-10’. None exceeded the EPA RSLs for residential or commercial/industrial soil.  1,3,5-trimethylbenzene was detected above the LRLs in soil samples B-4-8’, B-5-8’, B-7-8.5’, and B-8-10’. None exceeded the EPA RSLs for residential or commercial/industrial soil.  p-isopropyltoluene, isopropylbenzene (cumene), n-propylbenzene, and sec-butylbenzene were detected above the LRLs in soil sample B-7-8.5’, and did not exceed the respective EPA RSLs for either residential or commercial/industrial soil.  Acetone was detected above the LRL in soil sample B-8-10’, and did not exceed the respective EPA RSLs for either residential or commercial/industrial soil.  Methyl ethyl ketone (MEK) was detected above the LRL in soil samples B-1-17.5’, B-2-10’, and B-3-8.5’. None exceeded the EPA RSLs for either residential or commercial/industrial soil.  n-butyl alcohol was detected above the LRL in soil sample B-1-17.5’, and did not exceed the respective EPA RSLs for either residential or commercial/industrial soil.  Concentrations of all other VOCs were not detected above LRLs in all soil samples. TABLE 3 – SOIL SAMPLE ANALYTICAL RESULTS FOR VOCS (MBTEXN compounds) ANALYTE UDEQ ISLs (mg/kg) EPA RSLs (mg/kg) SAMPLE # B-1- 17.5’ B-2- 10’ B-3- 8.5’ B-4- 8’ B-5- 8’ B-6- 12’ B-7- 8.5’ B-8- 10’ B-9- 10’ B-10- 9.75’ B-11- 10’ RES I/C RESULTS (mg/kg, dry) Benzene 0.2 1.2 5.1 0.01 0.03 0.01 0.003 ND < 0.002 ND < 0.002 0.35 0.01 ND < 0.002 0.006 0.007 Toluene 9 4,900 47,000 0.02 0.07 0.02 0.02 0.009 ND < 0.006 8.08 0.02 ND < 0.006 0.007 0.02 Ethylbenzene 5 5.8 25 ND < 0.006 0.009 ND < 0.006 0.01 0.006 ND < 0.006 39.7 0.009 ND < 0.006 ND < 0.006 ND < 0.006 Total Xylenes 142 580 2,500 0.04 0.06 0.02 0.10 0.05 0.02 388 0.05 ND < 0.02 ND < 0.02 0.02 Naphthalene 51 2.0 8.6 ND < 0.006 ND < 0.006 ND < 0.006 0.006 ND < 0.005 ND < 0.006 62.0 ND < 0.007 ND < 0.006 ND < 0.006 ND < 0.006 MTBE 0.3 47 210 ND < 0.004 ND < 0.004 ND < 0.004 ND < 0.004 ND < 0.003 ND < 0.003 ND < 0.18 ND < 0.004 ND < 0.003 ND < 0.004 ND < 0.004 UDEQ ISLs = Utah Department of Environmental Quality Initial Screening Levels EPA RSLs = Environmental Protection Agency Regional Screening Levels for Residential (RES) Soil and Industrial/Commercial (I/C) Soil Limited Subsurface Investigation, Phase II Environmental Site Assessment CMT Technical Services CMT Project 23501: Maverik Clearfield 1350 East January 17, 2025 20 mg/kg = milligrams per kilogram MTBE Methyl-tert-butyl ether ND <### = Not Detected (result lower than given laboratory reporting limit) BOLD = Detection above the Laboratory Reporting Limit = DetecƟon Above the requisite ISL or RSL TABLE 4 – SOIL SAMPLE ANALYTICAL RESULTS FOR VOCS (Full List) ANALYTE EPA RSLs (mg/kg) SAMPLE # B-1- 17.5’ B-2- 10’ B-3- 8.5’ B-4- 8’ B-5- 8’ B-6- 12’ B-7- 8.5’ B-8- 10’ B-9- 10’ B-10- 9.75’ B-11- 10’ RES I/C RESULTS (mg/kg, dry) 1,1,1,2-Tetrachloroethane 2.0 8.8 ND < 0.006 ND < 0.006 ND < 0.006 ND < 0.006 ND < 0.005 ND < 0.006 ND < 0.29 ND < 0.007 ND < 0.006 ND < 0.006 ND < 0.006 1,1,1-Trichloroethane 8,100 36,000 ND < 0.006 ND < 0.006 ND < 0.006 ND < 0.006 ND < 0.005 ND < 0.006 ND < 0.29 ND < 0.007 ND < 0.006 ND < 0.006 ND < 0.006 1,1,2,2-Tetrachloroethane 0.60 2.7 ND < 0.006 ND < 0.006 ND < 0.006 ND < 0.006 ND < 0.005 ND < 0.006 ND < 0.29 ND < 0.007 ND < 0.006 ND < 0.006 ND < 0.006 1,1,2-Trichloroethane 1.1 5.0 ND < 0.006 ND < 0.006 ND < 0.006 ND < 0.006 ND < 0.005 ND < 0.006 ND < 0.29 ND < 0.007 ND < 0.006 ND < 0.006 ND < 0.006 1,1,2-Trichlorotrifluoroethane 6,700 28,000 ND < 0.006 ND < 0.006 ND < 0.006 ND < 0.006 ND < 0.005 ND < 0.006 ND < 0.29 ND < 0.007 ND < 0.006 ND < 0.006 ND < 0.006 1,1-Dichloroethane 3.6 16 ND < 0.006 ND < 0.006 ND < 0.006 ND < 0.006 ND < 0.005 ND < 0.006 ND < 0.29 ND < 0.007 ND < 0.006 ND < 0.006 ND < 0.006 1,1-Dichloroethene 4.8 20 ND < 0.006 ND < 0.006 ND < 0.006 ND < 0.006 ND < 0.005 ND < 0.006 ND < 0.29 ND < 0.007 ND < 0.006 ND < 0.006 ND < 0.006 1,1-Dichloropropene NE NE ND < 0.006 ND < 0.006 ND < 0.006 ND < 0.006 ND < 0.005 ND < 0.006 ND < 0.29 ND < 0.007 ND < 0.006 ND < 0.006 ND < 0.006 1,2,3-Trichlorobenzene 63 930 ND < 0.006 ND < 0.006 ND < 0.006 ND < 0.006 ND < 0.005 ND < 0.006 ND < 0.29 ND < 0.007 ND < 0.006 ND < 0.006 ND < 0.006 1,2,3-Trichloropropane 0.0051 0.11 ND < 0.006 ND < 0.006 ND < 0.006 ND < 0.006 ND < 0.005 ND < 0.006 ND < 0.29 ND < 0.007 ND < 0.006 ND < 0.006 ND < 0.006 1,2,4-Trichlorobenzene 24 110 ND < 0.006 ND < 0.006 ND < 0.006 ND < 0.006 ND < 0.005 ND < 0.006 ND < 0.29 ND < 0.007 ND < 0.006 ND < 0.006 ND < 0.006 1,2,4-Trimethylbenzene 300 1,800 ND < 0.006 ND < 0.006 ND < 0.006 0.02 0.01 ND < 0.006 297 0.02 0.006 ND < 0.006 ND < 0.006 1,2-Dibromo-3-chloropropane 0.0053 0.064 ND < 0.006 ND < 0.006 ND < 0.006 ND < 0.006 ND < 0.005 ND < 0.006 ND < 0.29 ND < 0.007 ND < 0.006 ND < 0.006 ND < 0.006 1,2-Dibromoethane (EDB) 0.036 0.16 ND < 0.006 ND < 0.006 ND < 0.006 ND < 0.006 ND < 0.005 ND < 0.006 ND < 0.29 ND < 0.007 ND < 0.006 ND < 0.006 ND < 0.006 1,2-Dichlorobenzene 1,800 9,300 ND < 0.006 ND < 0.006 ND < 0.006 ND < 0.006 ND < 0.005 ND < 0.006 ND < 0.29 ND < 0.007 ND < 0.006 ND < 0.006 ND < 0.006 1,2-Dichloroethane (EDC) 0.46 2.0 ND < 0.006 ND < 0.006 ND < 0.006 ND < 0.006 ND < 0.005 ND < 0.006 ND < 0.29 ND < 0.007 ND < 0.006 ND < 0.006 ND < 0.006 1,2-Dichloropropane 2.5 11 ND < 0.006 ND < 0.006 ND < 0.006 ND < 0.006 ND < 0.005 ND < 0.006 ND < 0.29 ND < 0.007 ND < 0.006 ND < 0.006 ND < 0.006 1,3,5-Trimethylbenzene 270 1,500 ND < 0.006 ND < 0.006 ND < 0.006 0.01 0.006 ND < 0.006 107 0.007 ND < 0.006 ND < 0.006 ND < 0.006 1,3-Dichlorobenzene NE NE ND < 0.006 ND < 0.006 ND < 0.006 ND < 0.006 ND < 0.005 ND < 0.006 ND < 0.29 ND < 0.007 ND < 0.006 ND < 0.006 ND < 0.006 1,3-Dichloropropane 1,600 23,000 ND < 0.006 ND < 0.006 ND < 0.006 ND < 0.006 ND < 0.005 ND < 0.006 ND < 0.29 ND < 0.007 ND < 0.006 ND < 0.006 ND < 0.006 1,4-Dichlorobenzene 2.6 11 ND < 0.006 ND < 0.006 ND < 0.006 ND < 0.006 ND < 0.005 ND < 0.006 ND < 0.29 ND < 0.007 ND < 0.006 ND < 0.006 ND < 0.006 2,2-Dichloropropane NE NE ND < 0.006 ND < 0.006 ND < 0.006 ND < 0.006 ND < 0.005 ND < 0.006 ND < 0.29 ND < 0.007 ND < 0.006 ND < 0.006 ND < 0.006 2-Chlorotoluene 1,600 23,000 ND < 0.006 ND < 0.006 ND < 0.006 ND < 0.006 ND < 0.005 ND < 0.006 ND < 0.29 ND < 0.007 ND < 0.006 ND < 0.006 ND < 0.006 2-Nitropropane 0.064 0.28 ND < 0.01 ND < 0.01 ND < 0.01 ND < 0.01 ND < 0.01 ND < 0.01 ND < 0.58 ND < 0.01 ND < 0.01 ND < 0.01 ND < 0.01 4-Chlorotoluene 1,600 23,000 ND < 0.006 ND < 0.006 ND < 0.006 ND < 0.006 ND < 0.005 ND < 0.006 ND < 0.29 ND < 0.007 ND < 0.006 ND < 0.006 ND < 0.006 Limited Subsurface Investigation, Phase II Environmental Site Assessment CMT Technical Services CMT Project 23501: Maverik Clearfield 1350 East January 17, 2025 21 ANALYTE EPA RSLs (mg/kg) SAMPLE # B-1- 17.5’ B-2- 10’ B-3- 8.5’ B-4- 8’ B-5- 8’ B-6- 12’ B-7- 8.5’ B-8- 10’ B-9- 10’ B-10- 9.75’ B-11- 10’ RES I/C RESULTS (mg/kg, dry) p-Isopropyltoluene 170 1,100 ND < 0.006 ND < 0.006 ND < 0.006 ND < 0.006 ND < 0.005 ND < 0.006 2.14 ND < 0.007 ND < 0.006 ND < 0.006 ND < 0.006 Acetone 70K 1.1M ND < 0.12 ND < 0.12 ND < 0.12 ND < 0.12 ND < 0.11 ND < 0.12 ND < 5.84 0.18 ND < 0.11 ND < 0.12 ND < 0.12 Bromobenzene 290 1,800 ND < 0.006 ND < 0.006 ND < 0.006 ND < 0.006 ND < 0.005 ND < 0.006 ND < 0.29 ND < 0.007 ND < 0.006 ND < 0.006 ND < 0.006 Bromochloromethane 150 630 ND < 0.006 ND < 0.006 ND < 0.006 ND < 0.006 ND < 0.005 ND < 0.006 ND < 0.29 ND < 0.007 ND < 0.006 ND < 0.006 ND < 0.006 Bromodichloromethane 0.29 1.3 ND < 0.006 ND < 0.006 ND < 0.006 ND < 0.006 ND < 0.005 ND < 0.006 ND < 0.29 ND < 0.007 ND < 0.006 ND < 0.006 ND < 0.006 Bromoform 19 86 ND < 0.006 ND < 0.006 ND < 0.006 ND < 0.006 ND < 0.005 ND < 0.006 ND < 0.29 ND < 0.007 ND < 0.006 ND < 0.006 ND < 0.006 Bromomethane 6.8 30 ND < 0.01 ND < 0.01 ND < 0.01 ND < 0.01 ND < 0.01 ND < 0.01 ND < 0.58 ND < 0.01 ND < 0.01 ND < 0.01 ND < 0.01 Carbon disulfide 770 3,500 ND < 0.01 ND < 0.01 ND < 0.01 ND < 0.01 ND < 0.01 ND < 0.01 ND < 0.58 ND < 0.01 ND < 0.01 ND < 0.01 ND < 0.01 Carbon tetrachloride 0.65 2.9 ND < 0.006 ND < 0.006 ND < 0.006 ND < 0.006 ND < 0.005 ND < 0.006 ND < 0.29 ND < 0.007 ND < 0.006 ND < 0.006 ND < 0.006 Chlorobenzene 280 1,300 ND < 0.006 ND < 0.006 ND < 0.006 ND < 0.006 ND < 0.005 ND < 0.006 ND < 0.29 ND < 0.007 ND < 0.006 ND < 0.006 ND < 0.006 Chloroethane 5,400 23,000 ND < 0.006 ND < 0.006 ND < 0.006 ND < 0.006 ND < 0.005 ND < 0.006 ND < 0.29 ND < 0.007 ND < 0.006 ND < 0.006 ND < 0.006 Chloroform 0.32 1.4 ND < 0.006 ND < 0.006 ND < 0.006 ND < 0.006 ND < 0.005 ND < 0.006 ND < 0.29 ND < 0.007 ND < 0.006 ND < 0.006 ND < 0.006 Chloromethane 110 460 ND < 0.006 ND < 0.006 ND < 0.006 ND < 0.006 ND < 0.005 ND < 0.006 ND < 0.29 ND < 0.007 ND < 0.006 ND < 0.006 ND < 0.006 cis-1,2-Dichloroethene 63 370 ND < 0.006 ND < 0.006 ND < 0.006 ND < 0.006 ND < 0.005 ND < 0.006 ND < 0.29 ND < 0.007 ND < 0.006 ND < 0.006 ND < 0.006 cis-1,3-Dichloropropene 1.8 8.2 ND < 0.006 ND < 0.006 ND < 0.006 ND < 0.006 ND < 0.005 ND < 0.006 ND < 0.29 ND < 0.007 ND < 0.006 ND < 0.006 ND < 0.006 Cyclohexanone 28K 130K ND < 0.06 ND < 0.06 ND < 0.06 ND < 0.06 ND < 0.05 ND < 0.06 ND < 2.92 ND < 0.07 ND < 0.06 ND < 0.06 ND < 0.06 Dibromochloromethane 8.3 39 ND < 0.006 ND < 0.006 ND < 0.006 ND < 0.006 ND < 0.005 ND < 0.006 ND < 0.29 ND < 0.007 ND < 0.006 ND < 0.006 ND < 0.006 Dibromomethane 24 99 ND < 0.006 ND < 0.006 ND < 0.006 ND < 0.006 ND < 0.005 ND < 0.006 ND < 0.29 ND < 0.007 ND < 0.006 ND < 0.006 ND < 0.006 Dichlorodifluoromethane 87 370 ND < 0.006 ND < 0.006 ND < 0.006 ND < 0.006 ND < 0.005 ND < 0.006 ND < 0.29 ND < 0.007 ND < 0.006 ND < 0.006 ND < 0.006 Ethyl Acetate 620 2,600 ND < 0.01 ND < 0.01 ND < 0.01 ND < 0.01 ND < 0.01 ND < 0.01 ND < 0.58 ND < 0.01 ND < 0.01 ND < 0.01 ND < 0.01 Ethyl Ether 16K 230K ND < 0.006 ND < 0.006 ND < 0.006 ND < 0.006 ND < 0.005 ND < 0.006 ND < 0.29 ND < 0.007 ND < 0.006 ND < 0.006 ND < 0.006 Hexachlorobutadiene 1.2 5.3 ND < 0.006 ND < 0.006 ND < 0.006 ND < 0.006 ND < 0.005 ND < 0.006 ND < 0.29 ND < 0.007 ND < 0.006 ND < 0.006 ND < 0.006 Isobutanol 7,800 43,000 ND < 0.12 ND < 0.12 ND < 0.12 ND < 0.12 ND < 0.11 ND < 0.12 ND < 5.84 ND < 0.14 ND < 0.11 ND < 0.12 ND < 0.12 Isopropylbenzene (Cumene) 1,900 9,900 ND < 0.006 ND < 0.006 ND < 0.006 ND < 0.006 ND < 0.005 ND < 0.006 3.25 ND < 0.007 ND < 0.006 ND < 0.006 ND < 0.006 Methyl Ethyl Ketone (MEK) 27K 190K 0.01 0.01 0.02 ND < 0.01 ND < 0.01 ND < 0.01 ND < 0.58 ND < 0.01 ND < 0.01 ND < 0.01 ND < 0.01 Methyl Isobutyl Ketone (MIBK) 33K 140K ND < 0.03 ND < 0.03 ND < 0.03 ND < 0.03 ND < 0.03 ND < 0.03 ND < 1.46 ND < 0.04 ND < 0.03 ND < 0.03 ND < 0.03 Methylene Chloride 57 1,000 ND < 0.006 ND < 0.006 ND < 0.006 ND < 0.006 ND < 0.005 ND < 0.006 ND < 0.29 ND < 0.007 ND < 0.006 ND < 0.006 ND < 0.006 n-Butyl Alcohol 7,800 120K 0.50 ND < 0.30 ND < 0.31 ND < 0.30 ND < 0.27 ND < 0.29 ND < 14.6 ND < 0.35 ND < 0.28 ND < 0.31 ND < 0.31 n-Butylbenzene 3,900 58,000 ND < 0.006 ND < 0.006 ND < 0.006 ND < 0.006 ND < 0.005 ND < 0.006 ND < 0.29 ND < 0.007 ND < 0.006 ND < 0.006 ND < 0.006 Limited Subsurface Investigation, Phase II Environmental Site Assessment CMT Technical Services CMT Project 23501: Maverik Clearfield 1350 East January 17, 2025 22 ANALYTE EPA RSLs (mg/kg) SAMPLE # B-1- 17.5’ B-2- 10’ B-3- 8.5’ B-4- 8’ B-5- 8’ B-6- 12’ B-7- 8.5’ B-8- 10’ B-9- 10’ B-10- 9.75’ B-11- 10’ RES I/C RESULTS (mg/kg, dry) n-Propylbenzene 3,800 24,000 ND < 0.006 ND < 0.006 ND < 0.006 ND < 0.006 ND < 0.005 ND < 0.006 23.0 ND < 0.007 ND < 0.006 ND < 0.006 ND < 0.006 Pentachloroethane 7.7 36 ND < 0.006 ND < 0.006 ND < 0.006 ND < 0.006 ND < 0.005 ND < 0.006 ND < 0.29 ND < 0.007 ND < 0.006 ND < 0.006 ND < 0.006 sec-Butylbenzene 7,800 120K ND < 0.006 ND < 0.006 ND < 0.006 ND < 0.006 ND < 0.005 ND < 0.006 5.98 ND < 0.007 ND < 0.006 ND < 0.006 ND < 0.006 Styrene 6,000 35,000 ND < 0.006 ND < 0.006 ND < 0.006 ND < 0.006 ND < 0.005 ND < 0.006 ND < 0.29 ND < 0.007 ND < 0.006 ND < 0.006 ND < 0.006 tert-Butylbenzene 7,800 120K ND < 0.006 ND < 0.006 ND < 0.006 ND < 0.006 ND < 0.005 ND < 0.006 ND < 0.29 ND < 0.007 ND < 0.006 ND < 0.006 ND < 0.006 Tetrachloroethene (PCE) 24 100 ND < 0.006 ND < 0.006 ND < 0.006 ND < 0.006 ND < 0.005 ND < 0.006 ND < 0.29 ND < 0.007 ND < 0.006 ND < 0.006 ND < 0.006 trans-1,2-Dichloroethene 70 300 ND < 0.006 ND < 0.006 ND < 0.006 ND < 0.006 ND < 0.005 ND < 0.006 ND < 0.29 ND < 0.007 ND < 0.006 ND < 0.006 ND < 0.006 trans-1,3-Dichloropropene 1.8 8.2 ND < 0.006 ND < 0.006 ND < 0.006 ND < 0.006 ND < 0.005 ND < 0.006 ND < 0.29 ND < 0.007 ND < 0.006 ND < 0.006 ND < 0.006 Trichloroethene (TCE) 0.94 6.0 ND < 0.006 ND < 0.006 ND < 0.006 ND < 0.006 ND < 0.005 ND < 0.006 ND < 0.29 ND < 0.007 ND < 0.006 ND < 0.006 ND < 0.006 Trichlorofluoromethane 23K 350K ND < 0.006 ND < 0.006 ND < 0.006 ND < 0.006 ND < 0.005 ND < 0.006 ND < 0.29 ND < 0.007 ND < 0.006 ND < 0.006 ND < 0.006 Vinyl chloride 0.059 1.7 ND < 0.005 ND < 0.005 ND < 0.005 ND < 0.005 ND < 0.004 ND < 0.005 ND < 0.23 ND < 0.006 ND < 0.004 ND < 0.005 ND < 0.005 EPA RSLs = Environmental Protection Agency Regional Screening Levels for Residential (RES) Soil and Industrial/Commercial (I/C) Soil mg/kg = milligrams per kilogram NE = Not Established ND <### = Not Detected (result lower than given laboratory reporting limit) BOLD = Detection above the Laboratory Reporting Limit = DetecƟon Above the requisite RSL 3.2.3 Total Metals (RCRA-D List 8) Due to their respective proximities to the service garage, waste oil AST, and car wash clarifier/oil-water separator, only soil sample locations B-1, B-2, and B-3 were analyzed for the RCRA-D List of eight metals: arsenic, barium, cadmium, chromium, lead, selenium, and silver by EPA Methods 6020A/3050B by ICP/MS, and for mercury by EPA Method 7471A by CVAA. Total Metals results are shown in Table 5. The natural background levels for soils listed were taken from Utah-specific background arsenic levels currently listed by the EPA (Appendix A). The soil sample analytical results for metals are summarized as follows:  Concentrations of arsenic were detected in all three soil samples, with a maximum concentration of 5.70 mg/kg in soil sample B-3-8.5’. All concentrations of arsenic detected exceeded the EPA RSL for residential soil of 0.68 mg/kg, and the EPA RSL for commercial/industrial soil of 3.0 mg/kg. However, these concentrations were within the estimated Utah regional natural soil background level range for arsenic of 2.8 to 10.9 mg/kg (US EPA, Region 8 Risk Assessment Contacts).  Concentrations of barium, lead, and selenium were detected in all three soil samples, but all concentrations were below the respective EPA RSLs for residential and commercial-industrial soils. The Limited Subsurface Investigation, Phase II Environmental Site Assessment CMT Technical Services CMT Project 23501: Maverik Clearfield 1350 East January 17, 2025 23 concentrations of barium and lead detected were within or below the respective estimated Utah regional natural soil background level ranges.  Concentrations of chromium were detected in all three soil samples, but there is not an established EPA RSL in soil for chromium. The concentrations of chromium detected were within or below the estimated Utah regional natural soil background level range.  One concentration of mercury was detected in soil sample B-1-17.5’, but below the EPA RSLs for residential and commercial-industrial soils. The concentration of mercury detected was within or below the estimated Utah regional natural soil background level range.  Concentrations of cadmium and silver were not detected above the respective LRLs in any soil samples. TABLE 5 – SOIL SAMPLE ANALYTICAL RESULTS FOR TOTAL METALS (RCRA-D List 8) ANALYTE EPA RSLs (mg/kg) Utah Regional Background EsƟmate (mg/kg) SAMPLE # B-1-17.5’ B-2-10’ B-3-8.5’ RES I/C RESULTS (mg/kg, dry) Arsenic 0.68 3.0 2.8 – 10.9 5.11 4.20 5.70 Barium 15,000 200,000 337 – 998 112 118 116 Cadmium 7.1 100 0.1 – 0.5 ND <1.63 ND <1.62 ND <2.17 Chromium NE NE 19 – 90 12.0 12.2 9.96 Lead 200 800 9 – 31 8.81 9.17 20.0 Mercury 7.1 30 0.02 – 0.11 0.024 ND <0.025 ND <0.029 Selenium 390 5,800 0.09 – 0.56 3.92 3.12 3.43 Silver 390 5,800 0.1 – 0.5 ND <1.63 ND <1.62 ND <2.17 EPA RSLs = Environmental Protection Agency Regional Screening Levels for Residential (RES) Soil and Industrial/Commercial (I/C) Soil mg/kg = milligrams per kilogram ND <### = Not Detected (result lower than given laboratory reporting limit) Underlined = Concentration exceeds Utah Regional Background estimate NE = Regulatory limit is Not Established BOLD = Detection above the Laboratory Reporting Limit = DetecƟon Above the requisite RSL 4.0-GROUNDWATER SAMPLING RESULTS 4.1 Field Observations Each soil boring was advanced to a depth of 20 feet bgs in order to obtain a sufficient quantity of groundwater for sampling. During investigation activities groundwater was encountered at depths ranging approximately between 13 and 17.5 feet bgs. No unusual odors were observed from the groundwater samples. 4.2 Analytical Data Results Groundwater analytical results were compared to the UDEQ ISLs for TPH and VOC analytes where applicable, as established by the Utah LPST Program (UDEQ–DERR). Groundwater analytical results were also evaluated Limited Subsurface Investigation, Phase II Environmental Site Assessment CMT Technical Services CMT Project 23501: Maverik Clearfield 1350 East January 17, 2025 24 against the EPA Maximum Contaminant Levels (MCLs), and the EPA Risk-Based Selective Screening Levels (RBSSLs) for protection of groundwater, with a Carcinogenic Screening Level of TCR=0.000001 (1E-06) and a THQ=1.0. Contaminant screening levels for which a regulatory limit is Not Established are marked as “NE”. Copies of the UDEQ ISLs and Tier 1 SLs, and EPA MCLs are provided in Appendix A – Supporting Documentation. Of note, samples were not evaluated against the less-restrictive T1SLs, as T1SLs are only applicable when there are no buildings, property lines, or utility lines within 30 feet, or water wells or surface water within 500 feet, of the highest measured concentration of any contaminant. These criteria do not apply to the Subject Property. A summary of groundwater sample analytical data is provided in Tables 6 through 9. Groundwater sampling result tables provide the applicable Utah ISLs and EPA MCLs, as well as the results from each sample. All results are listed in milligrams per liter (mg/L) or micrograms per liter (µg/L), as specified in the laboratory reports. Results with “ND <” are concentrations below the specified LRL, and results in bold are detections above the LRL. Results highlighted in pink are detections above the requisite ISL or MCL for the associated COC. The complete detailed laboratory analytical test results are included in the Appendix B - Analytical Data of this report. 4.2.1 TPH-GRO, TPH-DRO, TRPH, and Oil & Grease TPH-GRO (C5-C10) was analyzed by EPA Methods 8260D/5030B by GC/MS, and TPH-DRO (C10-C28) was analyzed by EPA Method 8015C by GC/FID. Due to their respective proximities to the service garage, waste oil AST, and car wash clarifier/oil-water separator, groundwater sample locations B-1, B-2, and B-3 were additionally analyzed for O&G (C20-C32) and SGT-HEM, also known as TRPH, both by EPA Method 1664B. Values for EPA MCLs have not been established for TPH-GRO, TPH-DRO, O&G, and TRPH. Groundwater sample analytical results for TPH-GRO, TPH-DRO, O&G, and TRPH are shown in Table 6 and are summarized as:  TPH-GRO was detected above the LRLs in five groundwater samples: B-4-W, B-5-W, B-6-W, B-7-W, and B-9-W, with all concentrations below the UDEQ ISL of 1 mg/L.  O&G and TRPH were detected in one groundwater sample, B-1-W. The concentration of O&G was reported at 17 mg/L, exceeding the UDEQ ISL of 10 mg/L. The concentration of TRPH did not exceed the UDEQ ISL of 10 mg/L.  TPH-DRO was not detected above the LRLs in all groundwater samples. Limited Subsurface Investigation, Phase II Environmental Site Assessment CMT Technical Services CMT Project 23501: Maverik Clearfield 1350 East January 17, 2025 25 TABLE 6 – GROUNDWATER SAMPLE ANALYTICAL RESULTS FOR TPH-GRO, TPH-DRO, O&G, and TRPH ANALYTE UDEQ ISLs (mg/L) SAMPLE # B-1-W B-2-W B-3-W B-4-W B-5-W B-6-W B-7-W B-8-W B-9-W B-10-W B-11-W RESULTS (mg/L) TPH-GRO 1 ND < 0.0100 ND < 0.0100 ND < 0.0100 0.149 0.0302 0.0345 0.168 ND < 0.0100 0.0349 ND < 0.0100 ND < 0.0100 TPH-DRO 1 ND <1.0 ND <1.0 ND <1.0 ND <1.0 ND <1.0 ND <1.0 ND <1.0 ND <1.0 ND <1.0 ND <1.0 ND <1.0 O&G 10 17 ND <5 ND <5 NA NA NA NA NA NA NA NA TRPH 10 9 ND <5 ND <5 NA NA NA NA NA NA NA NA UDEQ ISLs = Utah Department of Environmental Quality Initial Screening Levels mg/L = milligrams per liter TPH-GRO = Total Petroleum Hydrocarbons as Gasoline-Range Organics TPH-DRO = Total Petroleum Hydrocarbons as Diesel-Range Organics O&G = Oil and Grease TRPH = Total Recoverable Petroleum Hydrocarbons ND <### = Not Detected (result lower than given laboratory reporting limit) NA = Not Analyzed BOLD = Detection above the Laboratory Reporting Limit = DetecƟon Above the requisite ISL 4.2.2 VOCs: BTEXN and Full List VOCs were analyzed by EPA Method 8260D/5030B by GC/MS. The list of VOCs includes, but was not limited to, the five BTEXN compounds and MTBE. Groundwater sample analytical results for VOCs are shown in Table 7 and 8. Groundwater sample analytical results for VOCs are summarized as:  VOCs were not detected above LRLs in groundwater samples B-1-W through B-4-W and B-8-W through B-11-W.  Benzene was detected above the LRLs in groundwater samples B-5-W and B-6-W. Neither concentration exceeded the Utah ISL and EPA MCL.  Toluene was detected above the LRL in groundwater sample B-7-W; the concentration was below the Utah ISL and EPA MCL.  Ethylbenzene was detected above the LRLs in groundwater samples B-6-W and B-7-W. Neither concentration exceeded the Utah ISL and EPA MCL.  Total xylenes were detected above the LRLs in groundwater samples B-5-W, B-6-W, and B-7-W. None of the concentrations exceeded the Utah ISL and EPA MCL.  Naphthalene was detected above the LRL in groundwater sample B-7-W; the concentration was below the Utah ISL and EPA MCL.  1,2,4-trimethylbenzene was detected above the LRLs in groundwater samples B-5-W, B-6-W, and B-7- W. There is not an established EPA MCL in groundwater for 1,2,4-trimethylbenzene.  1,3,5-trimethylbenzene was detected above the LRL in groundwater sample B-7-W. There is not an established EPA MCL in groundwater for 1,3,5-trimethylbenzene.  Concentrations of all other VOCs were not detected above LRLs in all groundwater samples. Limited Subsurface Investigation, Phase II Environmental Site Assessment CMT Technical Services CMT Project 23501: Maverik Clearfield 1350 East January 17, 2025 26 TABLE 7 – GROUNDWATER SAMPLE ANALYTICAL RESULTS FOR VOCS (MBTEXN compounds) ANALYTE UDEQ ISLs (µg/L) EPA MCLs (µg/L) SAMPLE # B-1-W B-2-W B-3-W B-4-W B-5-W B-6-W B-7-W B-8-W B-9-W B-10-W B-11-W RESULTS (µg/L) Benzene 5 5 ND<0.4 ND<0.4 ND<0.4 ND<0.4 0.5 1.1 ND<0.4 ND<0.4 ND<0.4 ND<0.4 ND<0.4 Toluene 1,000 1,000 ND<1.0 ND<1.0 ND<1.0 ND<1.0 ND<1.0 ND<1.0 2.1 ND<1.0 ND<1.0 ND<1.0 ND<1.0 Ethylbenzene 700 700 ND<1.0 ND<1.0 ND<1.0 ND<1.0 ND<1.0 5.0 4.3 ND<1.0 ND<1.0 ND<1.0 ND<1.0 Total Xylenes 10,000 10,000 ND<3.0 ND<3.0 ND<3.0 ND<3.0 4.5 11.8 39.8 ND<3.0 ND<3.0 ND<3.0 ND<3.0 Naphthalene 700 NE ND<1.0 ND<1.0 ND<1.0 ND<1.0 ND<1.0 ND<1.0 3.8 ND<1.0 ND<1.0 ND<1.0 ND<1.0 MTBE 200 NE ND<0.6 ND<0.6 ND<0.6 ND<0.6 ND<0.6 ND<0.6 ND<0.6 ND<0.6 ND<0.6 ND<0.6 ND<0.6 UDEQ ISLs = Utah Department of Environmental Quality Initial Screening Levels EPA MCLs = Environmental Protection Agency Maximum Contaminant Levels µg/L = micrograms per liter MTBE Methyl-tert-butyl ether NE = regulatory limit is Not Established ND <### = Not Detected (result lower than given laboratory reporting limit) BOLD = Detection above the Laboratory Reporting Limit = DetecƟon Above the requisite ISL or MCL TABLE 8 – GROUNDWATER SAMPLE ANALYTICAL RESULTS FOR VOCS (Full List) ANALYTE EPA MCLs (µg/L) SAMPLE # B-1-W B-2-W B-3-W B-4-W B-5-W B-6-W B-7-W B-8-W B-9-W B-10-W B-11-W RESULTS (µg/L) 1,1,1,2-Tetrachloroethane NE ND<1.0 ND<1.0 ND<1.0 ND<1.0 ND<1.0 ND<1.0 ND<1.0 ND<1.0 ND<1.0 ND<1.0 ND<1.0 1,1,1-Trichloroethane 200 ND<1.0 ND<1.0 ND<1.0 ND<1.0 ND<1.0 ND<1.0 ND<1.0 ND<1.0 ND<1.0 ND<1.0 ND<1.0 1,1,2,2-Tetrachloroethane NE ND<1.0 ND<1.0 ND<1.0 ND<1.0 ND<1.0 ND<1.0 ND<1.0 ND<1.0 ND<1.0 ND<1.0 ND<1.0 1,1,2-Trichloroethane 5.0 ND<1.0 ND<1.0 ND<1.0 ND<1.0 ND<1.0 ND<1.0 ND<1.0 ND<1.0 ND<1.0 ND<1.0 ND<1.0 1,1,2-Trichlorotrifluoroethane NE ND<1.0 ND<1.0 ND<1.0 ND<1.0 ND<1.0 ND<1.0 ND<1.0 ND<1.0 ND<1.0 ND<1.0 ND<1.0 1,1-Dichloroethane NE ND<1.0 ND<1.0 ND<1.0 ND<1.0 ND<1.0 ND<1.0 ND<1.0 ND<1.0 ND<1.0 ND<1.0 ND<1.0 1,1-Dichloroethene 7.0 ND<1.0 ND<1.0 ND<1.0 ND<1.0 ND<1.0 ND<1.0 ND<1.0 ND<1.0 ND<1.0 ND<1.0 ND<1.0 1,1-Dichloropropene NE ND<1.0 ND<1.0 ND<1.0 ND<1.0 ND<1.0 ND<1.0 ND<1.0 ND<1.0 ND<1.0 ND<1.0 ND<1.0 2-Hexanone (Methyl butyl ketone, MBK) NE ND < 10.0 ND < 10.0 ND < 10.0 ND < 10.0 ND < 10.0 ND < 10.0 ND < 10.0 ND < 10.0 ND < 10.0 ND < 10.0 ND < 10.0 1,2,3-Trichlorobenzene NE ND<1.0 ND<1.0 ND<1.0 ND<1.0 ND<1.0 ND<1.0 ND<1.0 ND<1.0 ND<1.0 ND<1.0 ND<1.0 1,2,3-Trichloropropane NE ND<1.0 ND<1.0 ND<1.0 ND<1.0 ND<1.0 ND<1.0 ND<1.0 ND<1.0 ND<1.0 ND<1.0 ND<1.0 1,2,4-Trichlorobenzene 70 ND<1.0 ND<1.0 ND<1.0 ND<1.0 ND<1.0 ND<1.0 ND<1.0 ND<1.0 ND<1.0 ND<1.0 ND<1.0 1,2,4-Trimethylbenzene NE ND<1.0 ND<1.0 ND<1.0 ND<1.0 1.7 1.5 18.4 ND<1.0 ND<1.0 ND<1.0 ND<1.0 1,2-Dibromo-3-chloropropane 0.2 ND<1.0 ND<1.0 ND<1.0 ND<1.0 ND<1.0 ND<1.0 ND<1.0 ND<1.0 ND<1.0 ND<1.0 ND<1.0 1,2-Dibromoethane (EDB) 0.05 ND<1.0 ND<1.0 ND<1.0 ND<1.0 ND<1.0 ND<1.0 ND<1.0 ND<1.0 ND<1.0 ND<1.0 ND<1.0 1,2-Dichlorobenzene 600 ND<1.0 ND<1.0 ND<1.0 ND<1.0 ND<1.0 ND<1.0 ND<1.0 ND<1.0 ND<1.0 ND<1.0 ND<1.0 1,2-Dichloroethane (EDC) 5.0 ND<1.0 ND<1.0 ND<1.0 ND<1.0 ND<1.0 ND<1.0 ND<1.0 ND<1.0 ND<1.0 ND<1.0 ND<1.0 1,2-Dichloropropane 5.0 ND<1.0 ND<1.0 ND<1.0 ND<1.0 ND<1.0 ND<1.0 ND<1.0 ND<1.0 ND<1.0 ND<1.0 ND<1.0 1,3,5-Trimethylbenzene NE ND<1.0 ND<1.0 ND<1.0 ND<1.0 ND<1.0 ND<1.0 7.1 ND<1.0 ND<1.0 ND<1.0 ND<1.0 1,3-Dichlorobenzene NE ND<1.0 ND<1.0 ND<1.0 ND<1.0 ND<1.0 ND<1.0 ND<1.0 ND<1.0 ND<1.0 ND<1.0 ND<1.0 1,3-Dichloropropane NE ND<1.0 ND<1.0 ND<1.0 ND<1.0 ND<1.0 ND<1.0 ND<1.0 ND<1.0 ND<1.0 ND<1.0 ND<1.0 1,4-Dichlorobenzene 75 ND<1.0 ND<1.0 ND<1.0 ND<1.0 ND<1.0 ND<1.0 ND<1.0 ND<1.0 ND<1.0 ND<1.0 ND<1.0 2,2-Dichloropropane NE ND<1.0 ND<1.0 ND<1.0 ND<1.0 ND<1.0 ND<1.0 ND<1.0 ND<1.0 ND<1.0 ND<1.0 ND<1.0 2-Chlorotoluene NE ND<1.0 ND<1.0 ND<1.0 ND<1.0 ND<1.0 ND<1.0 ND<1.0 ND<1.0 ND<1.0 ND<1.0 ND<1.0 2-Nitropropane NE ND<2.0 ND<2.0 ND<2.0 ND<2.0 ND<2.0 ND<2.0 ND<2.0 ND<2.0 ND<2.0 ND<2.0 ND<2.0 4-Chlorotoluene NE ND<1.0 ND<1.0 ND<1.0 ND<1.0 ND<1.0 ND<1.0 ND<1.0 ND<1.0 ND<1.0 ND<1.0 ND<1.0 Acetone NE ND < 20.0 ND < 20.0 ND < 20.0 ND < 20.0 ND < 20.0 ND < 20.0 ND < 20.0 ND < 20.0 ND < 20.0 ND < 20.0 ND < 20.0 Acrylonitrile NE ND<5.0 ND<5.0 ND<5.0 ND<5.0 ND<5.0 ND<5.0 ND<5.0 ND<5.0 ND<5.0 ND<5.0 ND<5.0 Limited Subsurface Investigation, Phase II Environmental Site Assessment CMT Technical Services CMT Project 23501: Maverik Clearfield 1350 East January 17, 2025 27 ANALYTE EPA MCLs (µg/L) SAMPLE # B-1-W B-2-W B-3-W B-4-W B-5-W B-6-W B-7-W B-8-W B-9-W B-10-W B-11-W RESULTS (µg/L) Bromobenzene NE ND<1.0 ND<1.0 ND<1.0 ND<1.0 ND<1.0 ND<1.0 ND<1.0 ND<1.0 ND<1.0 ND<1.0 ND<1.0 Bromochloromethane NE ND<1.0 ND<1.0 ND<1.0 ND<1.0 ND<1.0 ND<1.0 ND<1.0 ND<1.0 ND<1.0 ND<1.0 ND<1.0 Bromodichloromethane 80 ND<1.0 ND<1.0 ND<1.0 ND<1.0 ND<1.0 ND<1.0 ND<1.0 ND<1.0 ND<1.0 ND<1.0 ND<1.0 Bromoform 80 ND<1.0 ND<1.0 ND<1.0 ND<1.0 ND<1.0 ND<1.0 ND<1.0 ND<1.0 ND<1.0 ND<1.0 ND<1.0 Bromomethane NE ND<2.0 ND<2.0 ND<2.0 ND<2.0 ND<2.0 ND<2.0 ND<2.0 ND<2.0 ND<2.0 ND<2.0 ND<2.0 Carbon disulfide NE ND<2.0 ND<2.0 ND<2.0 ND<2.0 ND<2.0 ND<2.0 ND<2.0 ND<2.0 ND<2.0 ND<2.0 ND<2.0 Carbon tetrachloride 5.0 ND<1.0 ND<1.0 ND<1.0 ND<1.0 ND<1.0 ND<1.0 ND<1.0 ND<1.0 ND<1.0 ND<1.0 ND<1.0 Chlorobenzene 100 ND<1.0 ND<1.0 ND<1.0 ND<1.0 ND<1.0 ND<1.0 ND<1.0 ND<1.0 ND<1.0 ND<1.0 ND<1.0 Chloroethane NE ND<1.0 ND<1.0 ND<1.0 ND<1.0 ND<1.0 ND<1.0 ND<1.0 ND<1.0 ND<1.0 ND<1.0 ND<1.0 Chloroform 80 ND<1.0 ND<1.0 ND<1.0 ND<1.0 ND<1.0 ND<1.0 ND<1.0 ND<1.0 ND<1.0 ND<1.0 ND<1.0 Chloromethane NE ND<1.0 ND<1.0 ND<1.0 ND<1.0 ND<1.0 ND<1.0 ND<1.0 ND<1.0 ND<1.0 ND<1.0 ND<1.0 cis-1,2-Dichloroethene 70 ND<1.0 ND<1.0 ND<1.0 ND<1.0 ND<1.0 ND<1.0 ND<1.0 ND<1.0 ND<1.0 ND<1.0 ND<1.0 cis-1,3-Dichloropropene NE ND<1.0 ND<1.0 ND<1.0 ND<1.0 ND<1.0 ND<1.0 ND<1.0 ND<1.0 ND<1.0 ND<1.0 ND<1.0 Cyclohexanone NE ND < 10.0 ND < 10.0 ND < 10.0 ND < 10.0 ND < 10.0 ND < 10.0 ND < 10.0 ND < 10.0 ND < 10.0 ND < 10.0 ND < 10.0 Dibromochloromethane 80 ND<1.0 ND<1.0 ND<1.0 ND<1.0 ND<1.0 ND<1.0 ND<1.0 ND<1.0 ND<1.0 ND<1.0 ND<1.0 Dibromomethane NE ND<1.0 ND<1.0 ND<1.0 ND<1.0 ND<1.0 ND<1.0 ND<1.0 ND<1.0 ND<1.0 ND<1.0 ND<1.0 Dichlorodifluoromethane NE ND<1.0 ND<1.0 ND<1.0 ND<1.0 ND<1.0 ND<1.0 ND<1.0 ND<1.0 ND<1.0 ND<1.0 ND<1.0 Ethyl Acetate NE ND<2.0 ND<2.0 ND<2.0 ND<2.0 ND<2.0 ND<2.0 ND<2.0 ND<2.0 ND<2.0 ND<2.0 ND<2.0 Ethyl Ether NE ND<1.0 ND<1.0 ND<1.0 ND<1.0 ND<1.0 ND<1.0 ND<1.0 ND<1.0 ND<1.0 ND<1.0 ND<1.0 Hexachlorobutadiene NE ND<1.0 ND<1.0 ND<1.0 ND<1.0 ND<1.0 ND<1.0 ND<1.0 ND<1.0 ND<1.0 ND<1.0 ND<1.0 Isobutanol NE ND < 20.0 ND < 20.0 ND < 20.0 ND < 20.0 ND < 20.0 ND < 20.0 ND < 20.0 ND < 20.0 ND < 20.0 ND < 20.0 ND < 20.0 Isopropylbenzene (Cumene) NE ND<1.0 ND<1.0 ND<1.0 ND<1.0 ND<1.0 ND<1.0 ND<1.0 ND<1.0 ND<1.0 ND<1.0 ND<1.0 Methyl Ethyl Ketone (MEK) NE ND<2.0 ND<2.0 ND<2.0 ND<2.0 ND<2.0 ND<2.0 ND<2.0 ND<2.0 ND<2.0 ND<2.0 ND<2.0 Methyl Isobutyl Ketone (MIBK) NE ND<5.0 ND<5.0 ND<5.0 ND<5.0 ND<5.0 ND<5.0 ND<5.0 ND<5.0 ND<5.0 ND<5.0 ND<5.0 Methylene Chloride 5.0 ND<1.0 ND<1.0 ND<1.0 ND<1.0 ND<1.0 ND<1.0 ND<1.0 ND<1.0 ND<1.0 ND<1.0 ND<1.0 n-Butyl Alcohol NE ND < 50.0 ND < 50.0 ND < 50.0 ND < 50.0 ND < 50.0 ND < 50.0 ND < 50.0 ND < 50.0 ND < 50.0 ND < 50.0 ND < 50.0 n-Butylbenzene NE ND<1.0 ND<1.0 ND<1.0 ND<1.0 ND<1.0 ND<1.0 ND<1.0 ND<1.0 ND<1.0 ND<1.0 ND<1.0 n-Propylbenzene NE ND<1.0 ND<1.0 ND<1.0 ND<1.0 ND<1.0 ND<1.0 ND<1.0 ND<1.0 ND<1.0 ND<1.0 ND<1.0 Pentachloroethane NE ND<1.0 ND<1.0 ND<1.0 ND<1.0 ND<1.0 ND<1.0 ND<1.0 ND<1.0 ND<1.0 ND<1.0 ND<1.0 p-Isopropyltoluene NE ND<1.0 ND<1.0 ND<1.0 ND<1.0 ND<1.0 ND<1.0 ND<1.0 ND<1.0 ND<1.0 ND<1.0 ND<1.0 sec-Butylbenzene NE ND<1.0 ND<1.0 ND<1.0 ND<1.0 ND<1.0 ND<1.0 ND<1.0 ND<1.0 ND<1.0 ND<1.0 ND<1.0 Styrene 100 ND<1.0 ND<1.0 ND<1.0 ND<1.0 ND<1.0 ND<1.0 ND<1.0 ND<1.0 ND<1.0 ND<1.0 ND<1.0 tert-Butylbenzene NE ND<1.0 ND<1.0 ND<1.0 ND<1.0 ND<1.0 ND<1.0 ND<1.0 ND<1.0 ND<1.0 ND<1.0 ND<1.0 Tetrachloroethene (PCE) 5.0 ND<1.0 ND<1.0 ND<1.0 ND<1.0 ND<1.0 ND<1.0 ND<1.0 ND<1.0 ND<1.0 ND<1.0 ND<1.0 trans-1,2-Dichloroethene 100 ND<1.0 ND<1.0 ND<1.0 ND<1.0 ND<1.0 ND<1.0 ND<1.0 ND<1.0 ND<1.0 ND<1.0 ND<1.0 trans-1,3-Dichloropropene NE ND<1.0 ND<1.0 ND<1.0 ND<1.0 ND<1.0 ND<1.0 ND<1.0 ND<1.0 ND<1.0 ND<1.0 ND<1.0 Trichloroethene (TCE) 5.0 ND<1.0 ND<1.0 ND<1.0 ND<1.0 ND<1.0 ND<1.0 ND<1.0 ND<1.0 ND<1.0 ND<1.0 ND<1.0 Trichlorofluoromethane NE ND<1.0 ND<1.0 ND<1.0 ND<1.0 ND<1.0 ND<1.0 ND<1.0 ND<1.0 ND<1.0 ND<1.0 ND<1.0 Vinyl chloride 2.0 ND<0.8 ND<0.8 ND<0.8 ND<0.8 ND<0.8 ND<0.8 ND<0.8 ND<0.8 ND<0.8 ND<0.8 ND<0.8 EPA MCLs = Environmental Protection Agency Maximum Contaminant Levels µg/L = micrograms per liter NE = regulatory limit is Not Established ND <### = Not Detected (result lower than given laboratory reporting limit) BOLD = Detection above the Laboratory Reporting Limit = DetecƟon Above the requisite MCL Limited Subsurface Investigation, Phase II Environmental Site Assessment CMT Technical Services CMT Project 23501: Maverik Clearfield 1350 East January 17, 2025 28 4.2.3 Total Metals (RCRA-D List 8) Due to their respective proximities to the service garage, waste oil AST, and car wash clarifier/oil-water separator, only groundwater sample locations B-1-W, B-2-W, and B-3-W were analyzed for the RCRA-D List of eight metals: arsenic, barium, cadmium, chromium, lead, selenium, and silver by EPA Methods 6010D/3010A by ICP/MS, and for mercury by EPA Method 7470A by CVAA. Total Metals results are shown in Table 8. The groundwater sample analytical results for metals are summarized as follows:  Barium was detected above the respective LRLs in all three groundwater samples, but all concentrations were below the respective EPA MCL.  Chromium was detected in all three groundwater samples. Only the concentration in sample B-1-W exceeded the respective EPA MCL of 0.100 mg/L at 0.135 mg/L.  Lead was detected in two groundwater samples, B-1-W and B-2-W, and both concentrations exceeded the EPA MCL of 0.010 mg/L at 0.0512 mg/L and 0.0388 mg/L, respectively.  Arsenic, cadmium, mercury, selenium, and silver were not detected above the respective LRLs in any groundwater samples. TABLE 8 – GROUNDWATER SAMPLE ANALYTICAL RESULTS FOR TOTAL METALS (RCRA-D List 8) ANALYTE EPA MCLs (mg/L) SAMPLE # B-1-W B-2-W’ B-3-W’ RESULTS (mg/L) Arsenic 0.010 ND <0.0500 ND <0.0500 ND <0.0500 Barium 2.0 1.53 1.12 0.857 Cadmium 0.0050 ND <0.005 ND <0.005 ND <0.005 Chromium 0.100 0.135 0.0899 0.0385 Lead 0.010 0.0512 0.0388 ND <0.0200 Mercury 0.0020 ND <0.0002 ND <0.0002 ND <0.0002 Selenium 0.050 ND <0.0300 ND <0.0300 ND <0.0300 Silver NE ND <0.005 ND <0.005 ND <0.005 EPA MCLs = Environmental Protection Agency Maximum Contaminant Levels mg/L = milligrams per liter ND <### = Not Detected (result lower than given laboratory reporting limit) NE = Regulatory limit is Not Established BOLD = Detection above the Laboratory Reporting Limit = DetecƟon Above the requisite MCL Limited Subsurface Investigation, Phase II Environmental Site Assessment CMT Technical Services CMT Project 23501: Maverik Clearfield 1350 East January 17, 2025 29 5.0-CONCLUSIONS AND RECOMMENDATIONS 5.1 Conclusions Based on a review of the field and laboratory analytical data from the LSI Phase II ESA, the following is summarized:  Visual evidence of hydrocarbon contamination, such as staining, was not observed in any of the soil samples collected. Olfactory evidence of hydrocarbon contamination, such as a strong petroleum or chemical odor, was observed in boreholes B-4 through B-9 at depths ranging between 7.25 and 10 feet bgs. Olfactory evidence was not observed in any of the other boreholes. The presence of VOCs was confirmed by PID measurements above 10 ppm in the same boreholes at the same depth range. A maximum reading of 1,711 ppm was recorded in boring B-7 at a depth of 7.25-8.5 feet bgs.  TPH-GRO was detected above the LRLs in all 11 soil samples. None of the concentrations exceeded the UDEQ ISL of 150 mg/kg except for B-7-8.5’, which registered a concentration of 2,100.  TPH-DRO was detected above the LRLs in four soil samples: B-1-17.5’, B-2-10’, B-7-8.5’, and B-8-10’. None of the concentrations exceeded the UDEQ ISL of 500 mg/kg except for B-7-8.5’, which registered a concentration of 4,990 mg/kg.  O&G, TRPH, and MTBE were not detected above the LRLs in all soil samples.  Benzene was detected above the LRLs in soil samples B-1-17.5’, B-2-10’, B-3-8.5’, B-4-8’, B-7-8.5’, B-8-10’, B-10-9.75’, and B-11-10’. Only the benzene concentration of 0.35 mg/kg in sample B-7-8.5’ exceeded the Utah ISL of 0.2 mg/kg. None of the concentrations exceeded either of the EPA RSLs for residential or commercial/industrial soil.  Toluene was detected above the LRLs in soil samples B-1-17.5’, B-2-10’, B-3-8.5’, B-4-8’, B-5-8’, B-7-8.5’, B-8-10’, B-10-9.75’, and B-11-10’, and none exceeded the Utah ISL or EPA RSLs for residential or commercial/industrial soil.  Ethylbenzene was detected above the LRLs in soil samples B-2-10’, B-4-8’, B-5-8’, B-7-8.5’, and B-8-10’. Only the concentration of 39.7 mg/kg in sample B-7-8.5’ exceeded the Utah ISL of 5 mg/kg and both of the EPA RSLs for residential or commercial/industrial soil of 5.8 and 25 mg/kg, respectively. None of the other detected concentrations exceeded the Utah ISL or EPA RSLs.  Total xylenes were detected above the LRLs in all soil samples except B-9-10’ and B-10-9.75’. Only the concentration of 388 mg/kg in sample B-7-8.5’ exceeded the Utah ISL of 142 mg/kg, but not the EPA RSLs for residential or commercial/industrial soil. None of the other concentrations exceeded the Utah ISL or either EPA RSL.  Naphthalene was detected above the LRLs in soil samples B-4-8’ and B-7-8.5’. The concentration of naphthalene of 62.0 mg/kg in sample B-7-8.5’ exceeded the Utah ISL of 51 mg/kg, and both of the EPA RSLs of 2.0 and 8.6 mg/kg, respectively. The concentration of naphthalene in soil sample B-4-8’ did not exceed the Utah ISL or either EPA RSL.  1,2,4-trimethylbenzene was detected above the LRLs in soil samples B-4-8’, B-5-8’, B-7-8.5’, B-8-10’, and B-9-10’, and none exceeded the EPA RSLs for residential or commercial/industrial soil. Limited Subsurface Investigation, Phase II Environmental Site Assessment CMT Technical Services CMT Project 23501: Maverik Clearfield 1350 East January 17, 2025 30  1,3,5-trimethylbenzene was detected above the LRLs in soil samples B-4-8’, B-5-8’, B-7-8.5’, and B-8-10’. None of the concentrations exceeded the EPA RSLs for residential or commercial/industrial soil.  p-isopropyltoluene, isopropylbenzene (cumene), n-propylbenzene, and sec-butylbenzene were detected above the LRLs in soil sample B-7-8.5’, and none exceeded the respective EPA RSLs for either residential or commercial/industrial soil.  Acetone was detected above the LRL in soil sample B-8-10’, and did not exceed the respective EPA RSLs for either residential or commercial/industrial soil.  MEK was detected above the LRL in soil samples B-1-17.5’, B-2-10’, and B-3-8.5’. None of the concentrations exceeded the EPA RSLs for either residential or commercial/industrial soil.  n-butyl alcohol was detected above the LRL in soil sample B-1-17.5’, and did not exceed the respective EPA RSLs for either residential or commercial/industrial soil.  Concentrations of all other VOCs were not detected above LRLs in all soil samples.  Arsenic was detected in all three soil samples, and all concentrations of arsenic detected exceeded the EPA RSL for residential soil of 0.68 mg/kg, and the EPA RSL for commercial/industrial soil of 3.0 mg/kg. The maximum concentration detected was 5.70 mg/kg in soil sample B-3-8.5’. However, all concentrations were within the estimated Utah regional natural soil background level range for arsenic of 2.8 to 10.9 mg/kg (U.S. EPA, Region 8 Risk Assessment Contacts).  Barium, lead, and selenium were detected in all three soil samples, and all concentrations did not exceed the respective EPA RSLs for residential and commercial-industrial soils. The concentrations of barium and lead detected were within or below the respective estimated Utah regional natural soil background level ranges.  Chromium was detected in all three soil samples, and all concentrations were within or below the estimated Utah regional natural soil background level range. There are not established EPA RSLs in soil for chromium.  Mercury was detected in soil sample B-1-17.5’. The concentration of mercury detected did not exceed the EPA RSLs for residential and commercial-industrial soils, and was within or below the estimated Utah regional natural soil background level range.  Concentrations of cadmium and silver were not detected above the respective LRLs in any soil samples.  During investigation activities groundwater was encountered at depths ranging between approximately 14 and 17.5 feet bgs. No unusual odors were observed from the groundwater samples.  TPH-GRO was detected above the LRLs in five groundwater samples: B-4-W, B-5-W, B-6-W, B-7-W, and B-9-W, and all concentrations did not exceed the UDEQ ISL of 1 mg/L.  O&G and TRPH were detected in one groundwater sample, B-1-W. The concentration of O&G was reported at 17 mg/L, exceeding the UDEQ ISL of 10 mg/L. The concentration of TRPH did not exceed the UDEQ ISL of 10 mg/L.  TPH-DRO was not detected above the LRLs in all groundwater samples.  VOCs were not detected above LRLs in groundwater samples B-1-W through B-4-W and B-8-W through B-11-W. Limited Subsurface Investigation, Phase II Environmental Site Assessment CMT Technical Services CMT Project 23501: Maverik Clearfield 1350 East January 17, 2025 31  Benzene was detected above the LRLs in groundwater samples B-5-W and B-6-W, and both concentrations did not exceed the Utah ISL and EPA MCL.  Toluene was detected above the LRL in groundwater sample B-7-W and the concentration did not exceed the Utah ISL and EPA MCL.  Ethylbenzene was detected above the LRLs in groundwater samples B-6-W and B-7-W, and none exceeded the Utah ISL and EPA MCL.  Total xylenes were detected above the LRLs in groundwater samples B-5-W, B-6-W, and B-7-W, and none exceeded the Utah ISL and EPA MCL.  Naphthalene was detected above the LRL in groundwater sample B-7-W and did not exceed the Utah ISL and EPA MCL.  MTBE was not detected above the LRLs in all groundwater samples.  1,2,4-trimethylbenzene was detected above the LRLs in groundwater samples B-5-W, B-6-W, and B-7- W. There is not an established EPA MCL in groundwater for 1,2,4-trimethylbenzene.  1,3,5-trimethylbenzene was detected above the LRL in groundwater sample B-7-W. There is not an established EPA MCL in groundwater for 1,3,5-trimethylbenzene.  Barium was detected above the respective LRLs in all three groundwater samples, and all did not exceed the EPA MCL.  Chromium was detected in all three groundwater samples. Only the concentration in sample B-1-W exceeded the respective EPA MCL of 0.100 mg/L.  Lead was detected in two groundwater samples, B-1-W and B-2-W, and both concentrations exceeded the EPA MCL of 0.010 mg/L.  Arsenic, cadmium, mercury, selenium, and silver were not detected above the respective LRLs in any groundwater samples. In conclusion, the Subject Property is underlain by soils impacted by petroleum hydrocarbons in multiple locations and from multiple possible sources. The primary impacted locations are in the vicinity of boreholes B-7, B-8, and B-1. B-7 is located adjacent to dispenser pump #7, B-8 is located in the approximate location of the south dispenser from the original canopy removed in 2000, and B-1 is located downgradient of the automobile service and repair garage. The primary contaminants in the B-7 location are TPH-DRO, TPH-GRO and BTEXN VOCs in soil. These contaminants likely originate with recent or historic releases. These pose a REC in connection with the Subject Property. The primary contaminants in the B-8 location are TPH-GRO in soil. This contaminant likely originated with historic releases. This poses a REC in connection with the Subject Property. Limited Subsurface Investigation, Phase II Environmental Site Assessment CMT Technical Services CMT Project 23501: Maverik Clearfield 1350 East January 17, 2025 32 The primary contaminants in the B-1 location are O&G and TRPH in groundwater. As O&G and TRPH were not detected in soil from B-1, these concentrations indicate that these contaminants are not from soil at the B-1 location but have migrated from elsewhere, and that there has been some O&G release on the Subject Property, likely from the s automobile service and repair garage operations. We hypothesize that there is a contamination plume originating under the garage building and parallelling the estimated groundwater flow direction to the southwest. During the Phase I ESA (CMT, 2025), multiple sump drains were observed inside the garage where petroleum hydrocarbons and other contaminated fluids could collect and seep into the underlying soil and groundwater. Concentrations of arsenic in the soil were detected and exceeded the EPA RSL for commercial/industrial soil in all three locations analyzed. However, all three concentrations, while above regulatory limits, were within the estimated regional natural soil background level range expected in Utah for arsenic and may not be indicative of “contaminated” soil. Chromium and lead concentrations in the groundwater were detected and exceeded the EPA MCLs in location B-1 downgradient of the automobile service and repair garage. These concentrations may or may not be indicative of “contaminated” groundwater. The chromium and lead in groundwater may not be contained within the boundaries of the Subject Property and are not necessarily from a source within the Subject Property, or are from natural sources in the soil. Alternatively, the concentrations may be, like the O&G and TRPH in B-1, indicative of a contamination plume originating under the automobile service and repair garage and parallelling the estimated groundwater flow direction to the southwest. While petroleum hydrocarbons and VOCs were detected below regulatory limits in the groundwater, , the groundwater does not appear to be significantly impacted in most locations other than in the vicinity and upgradient of B-1. The detections of the various VOCs in soil and groundwater are either below EPA RSLs and MCLs, or do not have an established regulatory limit. According to Utah law and UDEQ–DERR regulations, the UST operator is required to report, control, abate, and characterize the release by defining the extent and degree of contamination, and conduct remediation (clean- up) if necessary. These sampling results indicate TPH-DRO and TPH-GRO contamination in the soil and O&G contamination in the groundwater exceeding UDEQ ISLs that were not previously known. This would require a Limited Subsurface Investigation, Phase II Environmental Site Assessment CMT Technical Services CMT Project 23501: Maverik Clearfield 1350 East January 17, 2025 33 release notification to the DERR and possible LUST investigation. Regardless of proposed plans for redevelopment, these two petroleum hydrocarbon impacts require remediation. The potential for migration or intrusion of hydrocarbon vapors into the current and future proposed structures is possible and a concern in these areas. This includes vapors emanating from impacted groundwater as well as soils, even where soil contaminant levels are below screening limits. The convenience store building is also in the general direction of groundwater flow to the southwest from dispenser pump #7. There is the potential that there is a source area under the automobile service and repair garage with a plume extending downgradient. 5.2 Recommendations CMT concludes that based on the available data, under current conditions and site use of the Subject Property and under the proposed future conditions and site uses, additional characterization of the nature and extent of potential soil and groundwater impacts on the Subject Property is needed to delineate the O&G source area under the automobile service and repair garage, and remedial actions are warranted. The following recommendations are based on the findings and conclusions presented in this LSI Phase II report and previous data obtained from the Phase I ESA (CMT, 2025). 1. Provide a copy of this Phase II LSI report to the UDEQ-DERR for review and determination of a new release or LUST investigation. 2. Additional characterization of the nature and extent of potential soil and groundwater impacts on the Subject Property is needed to confirm and delineate the source areas, specifically the O&G detections in groundwater downgradient of the automobile service and repair garage (location B-1). The entire area of the garage building was filled with vehicles, automotive parts, repair equipment, and supplies during the Phase I ESA and the Phase II soil sampling. Due to the lack of accessibility inside the garage building at the time of the Phase II, direct soil and groundwater samples could not be collected. After the service and repair garage business has been closed and moved out, additional borings located adjacent to each of the sump drains or any other potential preferential pathway should be drilled and the soil and groundwater sampled for petroleum hydrocarbons, VOCs, and heavy metals. Following the additional characterization and assessment discussed above, and as warranted based on findings, a focused feasibility study of appropriate remedial options and implement remedial action for the cleanup of the site should be completed. Cost estimates and procedures should be prepared for the following two remedial actions: Excavation and Removal (soil remediation) and Soil Vapor Intrusion Mitigation. Limited Subsurface Investigation, Phase II Environmental Site Assessment CMT Technical Services CMT Project 23501: Maverik Clearfield 1350 East January 17, 2025 34 Remedial Action #1: Excavation and Removal. As the Subject Property has been proposed to be redeveloped, potential vapor intrusion can be significantly mitigated by excavation and removal of any impacted soils encountered as part of demolition and construction activities. CMT anticipates that the USTs, dispensers, and associated product piping will be decommissioned, excavated, and removed, and the existing convenience store, car wash, canopy, and service garage will be demolished and cleared. CMT recommends that the soils near borings B-7 (dispenser pump #7) and B-8 (former location of south dispenser), and any other petroleum hydrocarbon- impacted soils encountered during the future construction activities, be removed by excavation, the material disposed of at an appropriate facility, and confirmation sampling and testing be conducted. During construction activities and excavations in the confirmed or suspected areas, CMT can be onsite to monitor vapors from excavated soil with a PID or FID (flame-ionization detector) in excavations of any confirmed or suspected areas. Once soil with PID or FID measurements near zero is reached in the excavations, CMT will conduct confirmation soil sampling on the bottom and the sidewalls of the excavations according to UDEQ-DERR protocols for UST removal. This procedure can be repeated for any other areas discovered during the additional assessment or construction found to be impacted by petroleum hydrocarbons and heavy metals should likewise be excavated, and samples collected to confirm removal of impacted soil. CMT does not recommend excavating deeper than the groundwater table, or approximately 15 feet bgs, to prevent cross-contamination of potentially uncontaminated groundwater. Contaminated soil should be removed from the Subject Property, transported, and disposed of at a registered landfill accepting petroleum contaminated soil. Excavated materials should then be replaced with imported clean fill. Remedial Action #2: Soil Vapor Intrusion Mitigation. The potential health risk associated with present or future soil vapor concentrations should be evaluated with a Human Health Risk Assessment. Given the planned commercial redevelopment of the Subject Property from the current fueling station, convenience store, and service garage into a new fueling station and convenience store, the potential is considered to be high for adverse human exposure to gasoline and diesel contamination in the shallow subsurface soils or as vapor intrusion into possible future structures at the Subject Property. In combination with the previous action to remove hydrocarbon source contamination, a vapor membrane barrier and sub-slab vapor extraction system venting can be installed to prevent intrusion of gasoline and diesel hydrocarbon vapors into future occupied commercial structures. Limited Subsurface Investigation, Phase II Environmental Site Assessment CMT Technical Services CMT Project 23501: Maverik Clearfield 1350 East January 17, 2025 35 6.0- LIMITATIONS CMT has performed this assessment with the usual care and thoroughness of a consulting professional based on the scope-of-work, time limitations, cost, and analytical information. CMT has made no attempt to determine the marketability of the Subject Property, nor its suitability for any particular use, and such a determination should not be inferred based solely on this report. The information and findings presented in this report is not, and should not be, considered a warranty regarding the presence or non-presence of additional RECs in connection with the Subject Property. The sampling and analysis completed for this LSI Phase II ESA included only a limited number of samples of shallow subsurface material at the Subject Property. There is always a possibility that existing contaminants could escape detection using the methods employed. The conclusions in this report are based on industry- accepted methods and best professional judgment concerning the methods employed and the significance of the data gathered. This assessment does not attempt to analyze possible contamination sources, modes of transport, or the lateral or vertical extent of contamination. Conditions can exist below the ground surface that are not apparent visually or disclosed by sampling data. This study is limited to the conditions expressly disclosed in this report, and it does not represent the assessment or absence of any other conditions on or affecting the Subject Property. CMT’s findings assume that the sampling locations, and the resulting data, are representative of assessed conditions. CMT’s interpretations, discussion, and opinions of the results obtained from the referenced methods, observed conditions, and tested samples are applicable only to the specifically tested locations at the times stated herein. The regulatory standards referenced in this report are based on our knowledge of applicable regulatory standards in effect at the time the work was performed. CMT cannot anticipate potential future changes to regulatory standards by relevant governmental agencies. CMT performed our services in accordance with our contract with the Client, utilizing the ordinary degree of skill and care practiced by other firms providing similar services in the locality of the site. No other warranty or representation, either expressed or implied, is made. This report is prepared for the sole use and benefit of Mr. Thomas Hunt and Mr. Greg Day of Hunt Day, and their duly-authorized representatives, affiliates, and assigns, and may not be relied upon by any other person or entity without the written authorization (by reliance letter) of CMT. Limited Subsurface Investigation, Phase II Environmental Site Assessment CMT Technical Services CMT Project 23501: Maverik Clearfield 1350 East January 17, 2025 36 7.0-CLOSURE We appreciate the opportunity to be of service to you on this project. If you have any questions, please call. Sincerely, CMT Technical Services, Inc. Michael Sauerwein, P.G. Reviewed By: Krystal Walker Environmental Specialist & Geologist Environmental Engineer 1/17/25 Limited Subsurface Investigation, Phase II Environmental Site Assessment CMT Technical Services CMT Project 23501: Maverik Clearfield 1350 East January 17, 2025 37 8.0-REFERENCES CMT Technical Services (CMT), 2024. Statement of Work for Limited Phase II Environmental Site Assessment and ACM Inspection and Testing, Proposed Maverik Convenience Store, About 1350 East 700 South, Clearfield, Utah. Dated November 13, 2024. CMT, 2025. Phase I Environmental Site Assessment – Proposed Maverik Clearfield 1350 East. 1350 East 700 South, Clearfield, Davis County, Utah. CMT Project No. 23501. Unpublished consultant’s report prepared for Hunt Day Engineering. Dated January 17, 2025. Davis County Parcel Viewer website: https://webportal.daviscountyutah.gov/App/PropertySearch/esri/map Utah Department of Environmental Quality (UDEQ) website: www.deq.utah.gov/ Shacklette, H.T. and Boerngen, J.G.; 1984: Element Concentration in Soils and other Surficial Materials of the Conterminous United States. U.S. Geological Survey Professional Paper 1270, 105 pp. Environmental Protection Agency (EPA), Regional Screening Level (RSL) Summary and Resident Soil Table (TR=1E-06, THQ=1) November 2024: www.epa.gov/risk/regional-screening-levels-rsls-generic-tables EPA, Region 8 Risk Assessment Contacts (includes State-specific background soil arsenic levels): www.epa.gov/risk/region-8-risk-assessment-contacts/ UDEQ, Leaking Petroleum Storage Tanks (LPST) Program: Initial Screening Levels, Tier 1 Screening Criteria, November 1, 2005. documents.deq.utah.gov/environmental-response-and-remediation/ust-lust/branch/initial-screening-levels.pdf SUPPORTING DOCUMENTATION APPENDIX A Initial Screening Levels November 1, 2005 Contaminants* Groundwater (mg/L) Soil (mg/kg) Benzene 0.005 0.2 Toluene 1.0 9 Ethylbenzene 0.7 5 Xylenes 10.0 142 Naphthalene 0.7 51 Methyl t-butyl ether (MTBE) 0.2 0.3 Total Petroleum Hydrocarbons (TPH) as gasoline 1 150 Total Petroleum Hydrocarbons (TPH) as diesel 1 500 Oil and Grease or Total Recoverable Petroleum Hydrocarbons (TRPH) 10 1000 Tier 1 Screening Criteria November 1, 2005 Tier 1 Screening Levels are applicable only when the following site conditions are met: 1.) No buildings, property boundaries or utility lines within 30 feet of the highest measured concentration of any contaminant that is greater than the initial screening levels but less than or equal to the Tier 1 screening levels AND, 2.) No water wells or surface water within 500 feet of highest measured concentration of any contaminant that is greater than the initial screening levels but less than or equal to the Tier 1 screening levels. Contaminants * Groundwater (mg/L) Soil (mg/kg) Benzene 0.3 0.9 Toluene 3 25 Ethylbenzene 4 23 Xylenes 10 142 Naphthalene 0.7 51 Methyl t-butyl ether (MTBE) 0.2 0.3 Total Petroleum Hydrocarbons (TPH) as gasoline 10 1500 Total Petroleum Hydrocarbons (TPH) as diesel 10 5000 Oil and Grease or Total Recoverable Petroleum Hydrocarbons (TRPH) 10 10000 Regional Screening Level (RSL) Summary Table (TR=1E-06, HQ=1) November 2024 SFO (mg/kg-day)-1 k e y IUR (ug/m3)-1 k e y RfDo (mg/kg-day) k e y RfCi (mg/m3) k e y v o l mutagen GIABS ABSd Csat (mg/kg) Analyte CAS No. Resident Soil (mg/kg) k e y Industrial Soil (mg/kg) k e y Resident Air (ug/m3) k e y Industrial Air (ug/m3) k e y Tap Water (ug/L) k e y MCL (ug/L) Risk-based SSL (mg/kg) k e y MCL-based SSL (mg/kg) 3.00E-04 O 1 0.1 Acephate 30560-19-1 1.9E+01 n 2.5E+02 n 6.0E+00 n 1.3E-03 n 2.20E-06 I 9.00E-03 I V 1 1.07E+05 Acetaldehyde 75-07-0 1.1E+01 c**4.9E+01 c**1.3E+00 c**5.6E+00 c**2.6E+00 c**5.2E-04 c** 2.00E-02 I 1 0.1 Acetochlor 34256-82-1 1.3E+03 n 1.6E+04 n 3.5E+02 n 2.8E-01 n 9.00E-01 I V 1 1.14E+05 Acetone 67-64-1 7.0E+04 n 1.1E+06 nms 1.8E+04 n 3.7E+00 n 2.00E-03 X 1 0.1 Acetone Cyanohydrin 75-86-5 2.8E+06 nm 1.2E+07 nm 2.1E+00 n 8.8E+00 n 6.00E-02 I V 1 1.28E+05 Acetonitrile 75-05-8 8.1E+02 n 3.4E+03 n 6.3E+01 n 2.6E+02 n 1.3E+02 n 2.6E-02 n 1.00E-01 I V 1 2.52E+03 Acetophenone 98-86-2 7.8E+03 ns 1.2E+05 nms 1.9E+03 n 5.8E-01 n 3.80E+00 C 1.30E-03 C 1 0.1 Acetylaminofluorene, 2-53-96-3 1.4E-01 c 6.0E-01 c 2.2E-03 c 9.4E-03 c 1.6E-02 c 7.5E-05 c 5.00E-04 I 2.00E-05 I V 1 2.27E+04 Acrolein 107-02-8 1.4E-01 n 6.0E-01 n 2.1E-02 n 8.8E-02 n 4.2E-02 n 8.4E-06 n 5.00E-01 I 1.00E-04 I 2.00E-03 I 6.00E-03 I M 1 0.1 Acrylamide 79-06-1 2.4E-01 c 4.6E+00 c 1.0E-02 c 1.2E-01 c 5.0E-02 c 1.1E-05 c 5.00E-01 I 2.00E-04 P V 1 1.09E+05 Acrylic Acid 79-10-7 2.0E+01 n 8.3E+01 n 2.1E-01 n 8.8E-01 n 4.2E-01 n 8.5E-05 n 5.40E-01 I 6.80E-05 I 9.00E-05 T 2.00E-03 I V 1 1.13E+04 Acrylonitrile 107-13-1 2.5E-01 c*1.1E+00 c*4.1E-02 c*1.8E-01 c*5.2E-02 c*1.1E-05 c* 6.00E-03 P 1 0.1 Adiponitrile 111-69-3 8.5E+06 nm 3.6E+07 nm 6.3E+00 n 2.6E+01 n 5.60E-02 C 1.00E-02 I 1 0.1 Alachlor 15972-60-8 9.7E+00 c*4.1E+01 c 1.1E+00 c 2.0E+00 8.7E-04 c 1.6E-03 1.00E-03 I 1 0.1 Aldicarb 116-06-3 6.3E+01 n 8.2E+02 n 2.0E+01 n 3.0E+00 4.9E-03 n 7.5E-04 1.00E-03 I 1 0.1 Aldicarb Sulfone 1646-88-4 6.3E+01 n 8.2E+02 n 2.0E+01 n 2.0E+00 4.4E-03 n 4.4E-04 1 0.1 Aldicarb sulfoxide 1646-87-3 4.0E+00 8.8E-04 1.70E+01 I 4.90E-03 I 3.00E-05 I V 1 Aldrin 309-00-2 3.9E-02 c*1.8E-01 c 5.7E-04 c 2.5E-03 c 9.2E-04 c 1.5E-04 c 4.00E-03 P 1.00E-04 X V 1 1.11E+05 Allyl Alcohol 107-18-6 3.5E+00 n 1.5E+01 n 1.0E-01 n 4.4E-01 n 2.1E-01 n 4.2E-05 n 2.10E-02 C 6.00E-06 C 1.00E-03 I V 1 1.42E+03 Allyl Chloride 107-05-1 7.2E-01 c**3.2E+00 c**4.7E-01 c**2.0E+00 c**7.3E-01 c**2.3E-04 c** 1.00E+00 P 5.00E-03 P 1 Aluminum 7429-90-5 7.7E+04 n 1.1E+06 nm 5.2E+00 n 2.2E+01 n 2.0E+04 n 3.0E+04 n 4.00E-04 I 1 Aluminum Phosphide 20859-73-8 3.1E+01 n 4.7E+02 n 8.0E+00 n 9.00E-03 I 1 0.1 Ametryn 834-12-8 5.7E+02 n 7.4E+03 n 1.5E+02 n 1.6E-01 n 2.10E+01 C 6.00E-03 C 1 0.1 Aminobiphenyl, 4-92-67-1 2.6E-02 c 1.1E-01 c 4.7E-04 c 2.0E-03 c 3.0E-03 c 1.5E-05 c 8.00E-02 P 1 0.1 Aminophenol, m-591-27-5 5.1E+03 n 6.6E+04 n 1.6E+03 n 6.1E-01 n 4.00E-03 X 1 0.1 Aminophenol, o-95-55-6 2.5E+02 n 3.3E+03 n 7.9E+01 n 3.0E-02 n 2.00E-02 P 1 0.1 Aminophenol, p-123-30-8 1.3E+03 n 1.6E+04 n 4.0E+02 n 1.5E-01 n 2.50E-03 I 1 0.1 Amitraz 33089-61-1 1.6E+02 n 2.1E+03 n 8.2E+00 n 4.2E+00 n 5.00E-01 I V 1 Ammonia 7664-41-7 5.2E+02 n 2.2E+03 n 2.00E-03 X 1 0.1 Ammonium Picrate 131-74-8 1.3E+02 n 1.6E+03 n 4.0E+01 n 1.9E-01 n 2.00E-01 I 1 Ammonium Sulfamate 7773-06-0 1.6E+04 n 2.3E+05 nm 4.0E+03 n 3.00E-03 X V 1 1.37E+04 Amyl Alcohol, tert-75-85-4 8.2E+01 n 3.4E+02 n 3.1E+00 n 1.3E+01 n 6.3E+00 n 1.3E-03 n 5.70E-03 I 1.60E-06 C 7.00E-03 P 1.00E-03 I 1 0.1 Aniline 62-53-3 9.5E+01 c**4.0E+02 c*1.0E+00 n 4.4E+00 n 1.3E+01 c*4.6E-03 c* 4.00E-02 P 2.00E-03 X 1 0.1 Anthraquinone, 9,10-84-65-1 1.4E+01 c**5.7E+01 c*1.4E+00 c*1.4E-02 c* 4.00E-04 I 3.00E-04 A 0.15 Antimony (metallic)7440-36-0 3.1E+01 n 4.7E+02 n 3.1E-01 n 1.3E+00 n 7.8E+00 n 6.0E+00 3.5E-01 n 2.7E-01 5.00E-04 H 0.15 Antimony Pentoxide 1314-60-9 3.9E+01 n 5.8E+02 n 9.7E+00 n 4.00E-04 H 0.15 Antimony Tetroxide 1332-81-6 3.1E+01 n 4.7E+02 n 7.8E+00 n 2.00E-04 I 0.15 Antimony Trioxide 1309-64-4 2.8E+05 nm 1.2E+06 nm 2.1E-01 n 8.8E-01 n 1.50E+00 I 4.30E-03 I 3.00E-04 I 1.50E-05 C 1 0.03 Arsenic, Inorganic 7440-38-2 6.8E-01 c*G 3.0E+00 cG 6.5E-04 c*2.9E-03 c*5.2E-02 c 1.0E+01 1.5E-03 c 2.9E-01 3.50E-06 C 5.00E-05 I 1 Arsine 7784-42-1 2.7E-01 n 4.1E+00 n 5.2E-02 n 2.2E-01 n 7.0E-02 n 1 Asbestos (units in fibers)1332-21-4 7.0E+06(G) 3.60E-01 O 1 0.1 Asulam 3337-71-1 2.3E+04 n 3.0E+05 nm 7.2E+03 n 1.8E+00 n 2.30E-01 C 3.00E-03 A 1 0.1 Atrazine 1912-24-9 2.4E+00 c*1.0E+01 c 3.0E-01 c 3.0E+00 2.0E-04 c 1.9E-03 8.80E-01 C 2.50E-04 C 1 0.1 Auramine 492-80-8 6.2E-01 c 2.6E+00 c 1.1E-02 c 4.9E-02 c 7.8E-02 c 7.1E-04 c 4.00E-04 I 1 0.1 Avermectin B1 65195-55-3 2.5E+01 n 3.3E+02 n 8.0E+00 n 1.4E+01 n 3.00E-03 A 1.00E-02 A 1 0.1 Azinphos-methyl 86-50-0 1.9E+02 n 2.5E+03 n 1.0E+01 n 4.4E+01 n 5.6E+01 n 1.7E-02 n 1.10E-01 I 3.10E-05 I V 1 Azobenzene 103-33-3 5.6E+00 c 2.6E+01 c 9.1E-02 c 4.0E-01 c 1.2E-01 c 9.3E-04 c 1.00E+00 P 7.00E-06 P 1 0.1 Azodicarbonamide 123-77-3 8.6E+03 n 4.0E+04 n 7.3E-03 n 3.1E-02 n 2.0E+04 n 6.8E+00 n 2.00E-01 I 5.00E-04 H 0.07 Barium 7440-39-3 1.5E+04 n 2.2E+05 nm 5.2E-01 n 2.2E+00 n 3.8E+03 n 2.0E+03 1.6E+02 n 8.2E+01 5.00E-03 O V 1 Benfluralin 1861-40-1 3.9E+02 n 5.8E+03 n 2.8E+01 n 9.4E-01 n 5.00E-02 I 1 0.1 Benomyl 17804-35-2 3.2E+03 n 4.1E+04 n 9.7E+02 n 8.5E-01 n 2.00E-01 I 1 0.1 Bensulfuron-methyl 83055-99-6 1.3E+04 n 1.6E+05 nm 3.9E+03 n 1.0E+00 n 3.00E-02 I 1 0.1 Bentazon 25057-89-0 1.9E+03 n 2.5E+04 n 5.7E+02 n 1.2E-01 n 4.00E-03 P 1.00E-01 I V 1 1.16E+03 Benzaldehyde 100-52-7 1.7E+02 c*8.2E+02 c 1.9E+01 c 4.1E-03 c 5.50E-02 I 7.80E-06 I 4.00E-03 I 3.00E-02 I V 1 1.82E+03 Benzene 71-43-2 1.2E+00 c*5.1E+00 c*3.6E-01 c*1.6E+00 c*4.6E-01 c*5.0E+00 2.3E-04 c*2.6E-03 4.00E-03 C V 1 1.82E+02 Benzene, Trimethyl 25551-13-7 5.1E+01 n 2.2E+02 ns 4.2E+00 n 1.8E+01 n 8.3E+00 n 1.2E-02 n 1.00E-01 X 3.00E-04 X 1 0.1 Benzenediamine-2-methyl sulfate, 1,4-6369-59-1 5.4E+00 c**2.3E+01 c*7.8E-01 c**2.2E-04 c** 1.00E-03 P V 1 1.26E+03 Benzenethiol 108-98-5 7.8E+01 n 1.2E+03 n 1.7E+01 n 1.1E-02 n 2.30E+02 I 6.70E-02 I 3.00E-03 I M 1 0.1 Benzidine 92-87-5 5.3E-04 c 1.0E-02 c 1.5E-05 c 1.8E-04 c 1.1E-04 c 2.8E-07 c 4.00E+00 I 1 0.1 Benzoic Acid 65-85-0 2.5E+05 nm 3.3E+06 nm 7.5E+04 n 1.5E+01 n 1.30E+01 I V 1 3.24E+02 Benzotrichloride 98-07-7 5.3E-02 c 2.5E-01 c 3.0E-03 c 6.6E-06 c 1.00E-01 P 1 0.1 Benzyl Alcohol 100-51-6 6.3E+03 n 8.2E+04 n 2.0E+03 n 4.8E-01 n 1.70E-01 I 4.90E-05 C 2.00E-03 P 1.00E-03 P V 1 1.46E+03 Benzyl Chloride 100-44-7 1.1E+00 c*4.8E+00 c*5.7E-02 c*2.5E-01 c*8.9E-02 c*9.8E-05 c* 2.40E-03 I 2.00E-03 I 2.00E-05 I 0.007 Beryllium and compounds 7440-41-7 1.6E+02 n 2.3E+03 n 1.2E-03 c*5.1E-03 c*2.5E+01 n 4.0E+00 1.9E+01 n 3.2E+00 9.00E-03 P 1 0.1 Bifenox 42576-02-3 5.7E+02 n 7.4E+03 n 1.0E+02 n 7.6E-01 n 1.50E-02 I 1 0.1 Biphenthrin 82657-04-3 9.5E+02 n 1.2E+04 n 3.0E+02 n 1.4E+03 n 8.00E-03 I 5.00E-01 I 4.00E-04 X V 1 Biphenyl, 1,1'-92-52-4 4.7E+01 n 2.0E+02 n 4.2E-01 n 1.8E+00 n 8.3E-01 n 8.7E-03 n 4.00E-02 I V 1 1.02E+03 Bis(2-chloro-1-methylethyl) ether 108-60-1 3.1E+03 ns 4.7E+04 ns 7.1E+02 n 2.6E-01 n 3.00E-03 P 1 0.1 Bis(2-chloroethoxy)methane 111-91-1 1.9E+02 n 2.5E+03 n 5.9E+01 n 1.3E-02 n 1.10E+00 I 3.30E-04 I V 1 5.05E+03 Bis(2-chloroethyl)ether 111-44-4 2.3E-01 c 1.0E+00 c 8.5E-03 c 3.7E-02 c 1.4E-02 c 3.6E-06 c 2.20E+02 I 6.20E-02 I V 1 4.22E+03 Bis(chloromethyl)ether 542-88-1 8.3E-05 c 3.6E-04 c 4.5E-05 c 2.0E-04 c 7.2E-05 c 1.7E-08 c 5.00E-02 I 1 0.1 Bisphenol A 80-05-7 3.2E+03 n 4.1E+04 n 7.7E+02 n 5.8E+01 n 2.00E-01 I 2.00E-02 H 1 Boron And Borates Only 7440-42-8 1.6E+04 n 2.3E+05 nm 2.1E+01 n 8.8E+01 n 4.0E+03 n 1.3E+01 n 2.00E+00 P 2.00E-02 P V 1 Boron Trichloride 10294-34-5 1.6E+05 nm 2.3E+06 nm 2.1E+01 n 8.8E+01 n 4.2E+01 n 4.00E-02 C 1.30E-02 C V 1 Boron Trifluoride 7637-07-2 3.1E+03 n 4.7E+04 n 1.4E+01 n 5.7E+01 n 2.6E+01 n 7.00E-01 I 1.40E-04 C 4.00E-03 I 1 Bromate 15541-45-4 9.9E-01 c 4.7E+00 c 2.0E-02 c 8.8E-02 c 1.1E-01 c 1.0E+01 8.5E-04 c 7.7E-02 1.00E-04 X 6.00E-05 X V 1 2.38E+03 Bromo-2-chloroethane, 1-107-04-0 3.5E-01 n 1.5E+00 n 6.3E-02 n 2.6E-01 n 1.2E-01 n 3.3E-05 n 3.00E-04 X V 1 8.96E+02 Bromo-3-fluorobenzene, 1-1073-06-9 2.3E+01 n 3.5E+02 n 4.9E+00 n 4.7E-03 n Key: I = IRIS; P = PPRTV; O = OPP; A = ATSDR; T = ATSDR DRAFT; C = Cal EPA; X = PPRTV Screening Level; H = HEAST; D = OW; R = ORD; N = WI; W = TEF applied; E = RPF applied; G = see user's guide; c = cancer; n = noncancer; * = where: nc SL < 100X ca SL; ** = where nc SL < 10X ca SL; SSL values are based on DAF=1; m = ceiling limit exceeded; s = Csat exceeded; V = volatile; M = mutagen. Toxicity and Chemical-specific Information Contaminant Screening Levels Protection of Groundwater Page 1 of 12 Regional Screening Level (RSL) Summary Table (TR=1E-06, HQ=1) November 2024 SFO (mg/kg-day)-1 k e y IUR (ug/m3)-1 k e y RfDo (mg/kg-day) k e y RfCi (mg/m3) k e y v o l mutagen GIABS ABSd Csat (mg/kg) Analyte CAS No. Resident Soil (mg/kg) k e y Industrial Soil (mg/kg) k e y Resident Air (ug/m3) k e y Industrial Air (ug/m3) k e y Tap Water (ug/L) k e y MCL (ug/L) Risk-based SSL (mg/kg) k e y MCL-based SSL (mg/kg) Key: I = IRIS; P = PPRTV; O = OPP; A = ATSDR; T = ATSDR DRAFT; C = Cal EPA; X = PPRTV Screening Level; H = HEAST; D = OW; R = ORD; N = WI; W = TEF applied; E = RPF applied; G = see user's guide; c = cancer; n = noncancer; * = where: nc SL < 100X ca SL; ** = where nc SL < 10X ca SL; SSL values are based on DAF=1; m = ceiling limit exceeded; s = Csat exceeded; V = volatile; M = mutagen. Toxicity and Chemical-specific Information Contaminant Screening Levels Protection of Groundwater 3.00E-04 X V 1 3.23E+02 Bromo-4-fluorobenzene, 1-460-00-4 2.3E+01 n 3.5E+02 ns 4.6E+00 n 4.4E-03 n 1.70E-03 C 1 0.1 Bromoacetic acid 79-08-3 1.1E+02 n 1.4E+03 n 3.4E+01 n 6.0E+01(G)6.9E-03 n 1.2E-02 8.00E-03 I 6.00E-02 I V 1 6.79E+02 Bromobenzene 108-86-1 2.9E+02 n 1.8E+03 ns 6.3E+01 n 2.6E+02 n 6.2E+01 n 4.2E-02 n 4.00E-02 X V 1 4.04E+03 Bromochloromethane 74-97-5 1.5E+02 n 6.3E+02 n 4.2E+01 n 1.8E+02 n 8.3E+01 n 2.1E-02 n 6.20E-02 I 3.70E-05 C 8.00E-03 P V 1 9.32E+02 Bromodichloromethane 75-27-4 2.9E-01 c 1.3E+00 c 7.6E-02 c 3.3E-01 c 1.3E-01 c 8.0E+01(G)3.6E-05 c 2.2E-02 7.90E-03 I 1.10E-06 I 2.00E-02 I V 1 9.15E+02 Bromoform 75-25-2 1.9E+01 c*8.6E+01 c 2.6E+00 c 1.1E+01 c 3.3E+00 c 8.0E+01(G)8.7E-04 c 2.1E-02 1.40E-03 I 5.00E-03 I V 1 3.59E+03 Bromomethane 74-83-9 6.8E+00 n 3.0E+01 n 5.2E+00 n 2.2E+01 n 7.5E+00 n 1.9E-03 n 5.00E-03 H V 1 Bromophos 2104-96-3 3.9E+02 n 5.8E+03 n 3.5E+01 n 1.5E-01 n 3.70E-06 C 1.00E-01 A V 1 9.66E+02 Bromopropane, 1-106-94-5 1.6E+00 c 7.1E+00 c 7.6E-01 c 3.3E+00 c 1.5E+00 c 4.6E-04 c 1.03E-01 O 1.50E-02 O 1 0.1 Bromoxynil 1689-84-5 5.3E+00 c 2.2E+01 c 6.1E-01 c 5.2E-04 c 1.03E-01 O 1.50E-02 O V 1 Bromoxynil Octanoate 1689-99-2 6.7E+00 c 3.2E+01 c 2.4E-01 c 2.1E-03 c 6.00E-01 C 3.00E-05 I 2.00E-03 I V 1 6.67E+02 Butadiene, 1,3-106-99-0 7.6E-02 c*3.3E-01 c*9.4E-02 c*4.1E-01 c*7.1E-02 c*3.9E-05 c* 1.00E-01 I V 1 7.64E+03 Butanol, N-71-36-3 7.8E+03 ns 1.2E+05 nms 2.0E+03 n 4.1E-01 n 5.00E-04 I 4.00E-01 I 5.00E+00 I V 1 Butyl Alcohol, t-75-65-0 1.4E+03 c*6.5E+03 c*5.2E+03 n 2.2E+04 n 1.5E+02 c*3.2E-02 c* 2.00E+00 P 3.00E+01 P V 1 2.13E+04 Butyl alcohol, sec-78-92-2 1.3E+05 nms 1.5E+06 nms 3.1E+04 n 1.3E+05 n 2.4E+04 n 5.0E+00 n 5.00E-02 I V 1 Butylate 2008-41-5 3.9E+03 n 5.8E+04 n 4.6E+02 n 4.5E-01 n 2.00E-04 C 5.70E-08 C 1 0.1 Butylated hydroxyanisole 25013-16-5 2.7E+03 c 1.1E+04 c 4.9E+01 c 2.2E+02 c 1.5E+02 c 2.9E-01 c 3.60E-03 P 3.00E-01 P 1 0.1 Butylated hydroxytoluene 128-37-0 1.5E+02 c 6.4E+02 c 3.4E+00 c 1.0E-01 c 5.00E-02 P V 1 1.08E+02 Butylbenzene, n-104-51-8 3.9E+03 ns 5.8E+04 ns 1.0E+03 n 3.2E+00 n 1.00E-01 X V 1 1.45E+02 Butylbenzene, sec-135-98-8 7.8E+03 ns 1.2E+05 nms 2.0E+03 n 5.9E+00 n 1.00E-01 X V 1 1.83E+02 Butylbenzene, tert-98-06-6 7.8E+03 ns 1.2E+05 nms 6.9E+02 n 1.6E+00 n 2.00E-02 A 1 0.1 Cacodylic Acid 75-60-5 1.3E+03 n 1.6E+04 n 4.0E+02 n 1.1E-01 n 1.80E-03 I 1.00E-04 A 1.00E-05 A 0.025 0.001 Cadmium (Diet)7440-43-9 7.1E+00 n 1.0E+02 n 1.6E-03 c**6.8E-03 c** 1.80E-03 I 1.00E-04 A 1.00E-05 A 0.05 0.001 Cadmium (Water)7440-43-9 1.6E-03 c**6.8E-03 c**1.8E+00 n 5.0E+00 1.4E-01 n 3.8E-01 5.00E-01 I 2.20E-03 C 1 0.1 Caprolactam 105-60-2 3.1E+04 n 4.0E+05 nm 2.3E+00 n 9.6E+00 n 9.9E+03 n 2.5E+00 n 1.50E-01 C 4.30E-05 C 2.00E-03 I 1 0.1 Captafol 2425-06-1 3.6E+00 c*1.5E+01 c 6.5E-02 c 2.9E-01 c 4.0E-01 c*7.1E-04 c* 2.30E-03 C 6.60E-07 C 1.30E-01 I 1 0.1 Captan 133-06-2 2.4E+02 c*1.0E+03 c 4.3E+00 c 1.9E+01 c 3.1E+01 c*2.2E-02 c* 1.00E-01 I 1 0.1 Carbaryl 63-25-2 6.3E+03 n 8.2E+04 n 1.8E+03 n 1.7E+00 n 5.00E-03 I 1 0.1 Carbofuran 1563-66-2 3.2E+02 n 4.1E+03 n 9.4E+01 n 4.0E+01 3.7E-02 n 1.6E-02 1.00E-01 I 7.00E-01 I V 1 7.38E+02 Carbon Disulfide 75-15-0 7.7E+02 ns 3.5E+03 ns 7.3E+02 n 3.1E+03 n 8.1E+02 n 2.4E-01 n 7.00E-02 I 6.00E-06 I 4.00E-03 I 1.00E-01 I V 1 4.58E+02 Carbon Tetrachloride 56-23-5 6.5E-01 c 2.9E+00 c 4.7E-01 c 2.0E+00 c 4.6E-01 c 5.0E+00 1.8E-04 c 1.9E-03 1.00E-01 P V 1 5.89E+03 Carbonyl Sulfide 463-58-1 6.7E+01 n 2.8E+02 n 1.0E+02 n 4.4E+02 n 2.1E+02 n 5.1E-01 n 1.00E-02 I 1 0.1 Carbosulfan 55285-14-8 6.3E+02 n 8.2E+03 n 5.1E+01 n 1.2E+00 n 1.00E-01 I 1 0.1 Carboxin 5234-68-4 6.3E+03 n 8.2E+04 n 1.9E+03 n 1.0E+00 n 9.00E-04 I 1 Ceric oxide 1306-38-3 1.3E+06 nm 5.4E+06 nm 9.4E-01 n 3.9E+00 n 1.00E-01 I V 1 Chloral Hydrate 302-17-0 7.8E+03 n 1.2E+05 nm 2.0E+03 n 4.0E-01 n 1.50E-02 I 1 0.1 Chloramben 133-90-4 9.5E+02 n 1.2E+04 n 2.9E+02 n 7.0E-02 n 1 0.1 Chloramines, Organic E701235 4.0E+03(G) 4.03E-01 H 1 0.1 Chloranil 118-75-2 1.3E+00 c 5.7E+00 c 1.8E-01 c 1.5E-04 c 5.00E-04 G V 1 0.04 Chlordane (alpha)5103-71-9 3.6E+01 n 5.0E+02 n 3.6E+00 n 4.9E-01 n 5.00E-04 G V 1 0.04 Chlordane (gamma)5103-74-2 3.6E+01 n 5.0E+02 n 1.0E+01 n 1.4E+00 n 3.50E-01 I 1.00E-04 I 5.00E-04 I 7.00E-04 I V 1 0.04 Chlordane (technical mixture)12789-03-6 1.7E+00 c*7.7E+00 c*2.8E-02 c*1.2E-01 c*2.0E-02 c*2.0E+00 2.7E-03 c*2.7E-01 1.00E+01 I 4.60E-03 C 3.00E-04 I 1 0.1 Chlordecone (Kepone)143-50-0 5.4E-02 c 2.3E-01 c 6.1E-04 c 2.7E-03 c 3.5E-03 c 1.2E-04 c 7.00E-04 A 1 0.1 Chlorfenvinphos 470-90-6 4.4E+01 n 5.7E+02 n 1.1E+01 n 3.1E-02 n 9.00E-02 O 1 0.1 Chlorimuron, Ethyl-90982-32-4 5.7E+03 n 7.4E+04 n 1.8E+03 n 6.0E-01 n 1.00E-01 I 1.45E-04 A V 1 2.78E+03 Chlorine 7782-50-5 1.8E-01 n 7.8E-01 n 1.5E-01 n 6.4E-01 n 3.0E-01 n 4.0E+03(G)1.5E-04 n 2.0E+00 3.00E-02 I 2.00E-04 I V 1 Chlorine Dioxide 10049-04-4 2.3E+03 n 3.4E+04 n 2.1E-01 n 8.8E-01 n 4.2E-01 n 8.0E+02(G) 3.00E-02 I 1 Chlorite (Sodium Salt)7758-19-2 2.3E+03 n 3.5E+04 n 6.0E+02 n 1.0E+03 5.00E+01 I V 1 1.15E+03 Chloro-1,1-difluoroethane, 1-75-68-3 5.4E+04 ns 2.3E+05 nms 5.2E+04 n 2.2E+05 n 1.0E+05 n 5.2E+01 n 3.00E-04 I 2.00E-02 H 2.00E-02 I V M 1 7.86E+02 Chloro-1,3-butadiene, 2- (Chloroprene)126-99-8 3.6E-03 c 4.4E-02 c 3.4E-03 c 4.1E-02 c 6.8E-03 c 3.6E-06 c 4.60E-01 H 1 0.1 Chloro-2-methylaniline HCl, 4-3165-93-3 1.2E+00 c 5.0E+00 c 1.7E-01 c 1.5E-04 c 1.00E-01 P 7.70E-05 C 3.00E-03 X 1 0.1 Chloro-2-methylaniline, 4-95-69-2 5.4E+00 c*2.3E+01 c 3.6E-02 c 1.6E-01 c 7.0E-01 c*4.0E-04 c* 2.70E-01 X V 1 1.18E+04 Chloroacetaldehyde, 2-107-20-0 2.6E+00 c 1.2E+01 c 2.9E-01 c 5.8E-05 c 3.50E-03 C 1 0.1 Chloroacetic Acid 79-11-8 2.2E+02 n 2.9E+03 n 7.0E+01 n 6.0E+01(G)1.4E-02 n 1.2E-02 3.00E-05 I 1 0.1 Chloroacetophenone, 2-532-27-4 4.3E+04 n 1.8E+05 nm 3.1E-02 n 1.3E-01 n 2.00E-01 P 5.00E-04 P 1 0.1 Chloroaniline, p-106-47-8 2.7E+00 c*1.1E+01 c*3.7E-01 c*1.6E-04 c* 2.00E-02 I 5.00E-02 P V 1 7.61E+02 Chlorobenzene 108-90-7 2.8E+02 n 1.3E+03 ns 5.2E+01 n 2.2E+02 n 7.8E+01 n 1.0E+02 5.3E-02 n 6.8E-02 1.00E-01 X 1 0.1 Chlorobenzene sulfonic acid, p-98-66-8 6.3E+03 n 8.2E+04 n 2.0E+03 n 4.7E-01 n 1.10E-01 C 3.10E-05 C 2.00E-02 I 1 0.1 Chlorobenzilate 510-15-6 4.9E+00 c 2.1E+01 c 9.1E-02 c 4.0E-01 c 3.1E-01 c 1.0E-03 c 3.00E-02 X 1 0.1 Chlorobenzoic Acid, p-74-11-3 1.9E+03 n 2.5E+04 n 5.1E+02 n 1.3E-01 n 8.60E-06 C 3.00E-03 P 3.00E-01 P V 1 2.90E+02 Chlorobenzotrifluoride, 4-98-56-6 2.2E+00 c*9.6E+00 c 3.3E-01 c 1.4E+00 c 6.5E-01 c*2.3E-03 c* 4.00E-02 P V 1 7.28E+02 Chlorobutane, 1-109-69-3 3.1E+03 ns 4.7E+04 ns 6.4E+02 n 2.6E-01 n 5.00E+01 I V 1 1.68E+03 Chlorodifluoromethane 75-45-6 4.9E+04 ns 2.1E+05 nms 5.2E+04 n 2.2E+05 n 1.0E+05 n 4.3E+01 n 2.00E-02 P V 1 1.11E+05 Chloroethanol, 2-107-07-3 1.6E+03 n 2.3E+04 n 4.0E+02 n 8.1E-02 n 3.10E-02 C 2.30E-05 I 1.00E-02 I 1.95E-03 T V 1 2.54E+03 Chloroform 67-66-3 3.2E-01 c*1.4E+00 c*1.2E-01 c*5.3E-01 c*2.2E-01 c*8.0E+01(G)6.1E-05 c*2.2E-02 9.00E-02 I V 1 1.32E+03 Chloromethane 74-87-3 1.1E+02 n 4.6E+02 n 9.4E+01 n 3.9E+02 n 1.9E+02 n 4.9E-02 n 2.40E+00 C 6.90E-04 C V 1 9.32E+03 Chloromethyl Methyl Ether 107-30-2 2.0E-02 c 8.9E-02 c 4.1E-03 c 1.8E-02 c 6.5E-03 c 1.4E-06 c 3.00E-01 P 3.00E-03 P 1.00E-05 X 1 0.1 Chloronitrobenzene, o-88-73-3 1.8E+00 c 7.7E+00 c 1.0E-02 n 4.4E-02 n 2.4E-01 c 2.2E-04 c 6.00E-02 P 7.00E-04 P 2.00E-03 P 1 0.1 Chloronitrobenzene, p-100-00-5 9.0E+00 c**3.8E+01 c*2.1E+00 n 8.8E+00 n 1.2E+00 c*1.1E-03 c* 5.00E-03 I V 1 2.74E+04 Chlorophenol, 2-95-57-8 3.9E+02 n 5.8E+03 n 9.1E+01 n 8.9E-02 n 4.00E-04 C V 1 6.17E+02 Chloropicrin 76-06-2 2.0E+00 n 8.2E+00 n 4.2E-01 n 1.8E+00 n 8.3E-01 n 2.5E-04 n 1.70E-02 C 1.50E-02 I 1 0.1 Chlorothalonil 1897-45-6 3.2E+01 c*1.4E+02 c*4.0E+00 c*9.0E-03 c* 2.00E-02 I V 1 9.07E+02 Chlorotoluene, o-95-49-8 1.6E+03 ns 2.3E+04 ns 2.4E+02 n 2.3E-01 n 2.00E-02 X V 1 2.53E+02 Chlorotoluene, p-106-43-4 1.6E+03 ns 2.3E+04 ns 2.5E+02 n 2.4E-01 n 2.40E+02 C 6.90E-02 C 1 0.1 Chlorozotocin 54749-90-5 2.3E-03 c 9.6E-03 c 4.1E-05 c 1.8E-04 c 3.2E-04 c 7.1E-08 c 5.00E-03 O 1 0.1 Chlorpropham 101-21-3 3.2E+02 n 4.1E+03 n 7.1E+01 n 6.4E-02 n 1.00E-03 A 1 0.1 Chlorpyrifos 2921-88-2 6.3E+01 n 8.2E+02 n 8.4E+00 n 1.2E-01 n 1.00E-02 H 1 0.1 Chlorpyrifos Methyl 5598-13-0 6.3E+02 n 8.2E+03 n 1.2E+02 n 5.4E-01 n Page 2 of 12 Regional Screening Level (RSL) Summary Table (TR=1E-06, HQ=1) November 2024 SFO (mg/kg-day)-1 k e y IUR (ug/m3)-1 k e y RfDo (mg/kg-day) k e y RfCi (mg/m3) k e y v o l mutagen GIABS ABSd Csat (mg/kg) Analyte CAS No. Resident Soil (mg/kg) k e y Industrial Soil (mg/kg) k e y Resident Air (ug/m3) k e y Industrial Air (ug/m3) k e y Tap Water (ug/L) k e y MCL (ug/L) Risk-based SSL (mg/kg) k e y MCL-based SSL (mg/kg) Key: I = IRIS; P = PPRTV; O = OPP; A = ATSDR; T = ATSDR DRAFT; C = Cal EPA; X = PPRTV Screening Level; H = HEAST; D = OW; R = ORD; N = WI; W = TEF applied; E = RPF applied; G = see user's guide; c = cancer; n = noncancer; * = where: nc SL < 100X ca SL; ** = where nc SL < 10X ca SL; SSL values are based on DAF=1; m = ceiling limit exceeded; s = Csat exceeded; V = volatile; M = mutagen. Toxicity and Chemical-specific Information Contaminant Screening Levels Protection of Groundwater 5.00E-02 O 1 0.1 Chlorsulfuron 64902-72-3 3.2E+03 n 4.1E+04 n 9.9E+02 n 8.3E-01 n 1.00E-02 I 1 0.1 Chlorthal-dimethyl 1861-32-1 6.3E+02 n 8.2E+03 n 1.2E+02 n 1.5E-01 n 8.00E-04 H 1 0.1 Chlorthiophos 60238-56-4 5.1E+01 n 6.6E+02 n 2.8E+00 n 7.3E-02 n 6.00E-05 C 0.013 Chromium(III) (Soluble Compounds)16065-83-1 8.5E+04 n 3.6E+05 nm 6.3E-02 n 2.6E-01 n 1.50E+00 I 0.013 Chromium(III), Insoluble Salts 16065-83-1 1.2E+05 nm 1.8E+06 nm 2.2E+04 n 4.0E+07 n 1.60E-01 I 1.10E-02 I 9.00E-04 I 3.00E-05 I M 0.025 Chromium(VI)18540-29-9 9.5E-01 c*2.0E+01 c*9.2E-05 c 1.1E-03 c 1.1E-01 c 2.1E-03 c 0.013 Chromium, Total 7440-47-3 1.0E+02 1.8E+05 1.30E-02 I 1 0.1 Clofentezine 74115-24-5 8.2E+02 n 1.1E+04 n 2.3E+02 n 1.4E+01 n 9.00E-03 P 3.00E-04 P 6.00E-06 P 1 Cobalt 7440-48-4 2.3E+01 n 3.5E+02 n 3.1E-04 c*1.4E-03 c*6.0E+00 n 2.7E-01 n 6.20E-04 I V M 1 Coke Oven Emissions E649830 1.6E-03 c 2.0E-02 c 4.00E-02 H 1 Copper 7440-50-8 3.1E+03 n 4.7E+04 n 8.0E+02 n 1.3E+03 2.8E+01 n 4.6E+01 5.00E-02 I 6.00E-01 C 1 0.1 Cresol, m-108-39-4 3.2E+03 n 4.1E+04 n 6.3E+02 n 2.6E+03 n 9.3E+02 n 7.4E-01 n 5.00E-02 I 6.00E-01 C 1 0.1 Cresol, o-95-48-7 3.2E+03 n 4.1E+04 n 6.3E+02 n 2.6E+03 n 9.3E+02 n 7.5E-01 n 2.00E-02 P 6.00E-01 C 1 0.1 Cresol, p-106-44-5 1.3E+03 n 1.6E+04 n 6.3E+02 n 2.6E+03 n 3.7E+02 n 3.0E-01 n 1.00E-01 A 1 0.1 Cresol, p-chloro-m-59-50-7 6.3E+03 n 8.2E+04 n 1.4E+03 n 1.7E+00 n 1.00E-01 A 6.00E-01 C 1 0.1 Cresols 1319-77-3 6.3E+03 n 8.2E+04 n 6.3E+02 n 2.6E+03 n 1.5E+03 n 1.3E+00 n 1.90E+00 H 1.00E-03 P V 1 1.66E+04 Crotonaldehyde, trans-123-73-9 3.7E-01 c 1.7E+00 c 4.0E-02 c 8.2E-06 c 1.00E-01 I 4.00E-01 I V 1 2.68E+02 Cumene 98-82-8 1.9E+03 ns 9.9E+03 ns 4.2E+02 n 1.8E+03 n 4.5E+02 n 7.4E-01 n 2.20E-01 C 6.30E-05 C 1 0.1 Cupferron 135-20-6 2.5E+00 c 1.0E+01 c 4.5E-02 c 1.9E-01 c 3.5E-01 c 6.1E-04 c 8.40E-01 H 2.00E-03 H 1 0.1 Cyanazine 21725-46-2 6.5E-01 c 2.7E+00 c 8.8E-02 c 4.1E-05 c Cyanides 1.00E-03 I 9.00E-03 C 1 ~Calcium Cyanide 592-01-8 7.8E+01 n 1.2E+03 n 9.4E+00 n 3.9E+01 n 2.0E+01 n 5.00E-03 I 1 ~Copper Cyanide 544-92-3 3.9E+02 n 5.8E+03 n 1.0E+02 n 6.00E-04 I 8.00E-04 G V 1 9.54E+05 ~Cyanide (CN-)57-12-5 2.4E+01 n 1.6E+02 n 8.3E-01 n 3.5E+00 n 1.5E+00 n 2.0E+02 1.5E-02 n 2.0E+00 1.00E-03 I V 1 ~Cyanogen 460-19-5 7.8E+01 n 1.2E+03 n 2.0E+01 n 9.00E-02 I V 1 ~Cyanogen Bromide 506-68-3 7.0E+03 n 1.1E+05 nm 1.8E+03 n 5.00E-02 I V 1 ~Cyanogen Chloride 506-77-4 3.9E+03 n 5.8E+04 n 1.0E+03 n 6.00E-04 I 8.00E-04 I V 1 1.00E+07 ~Hydrogen Cyanide 74-90-8 2.3E+01 n 1.5E+02 n 8.3E-01 n 3.5E+00 n 1.5E+00 n 1.5E-02 n 2.00E-03 I 9.00E-03 C 1 ~Potassium Cyanide 151-50-8 1.6E+02 n 2.3E+03 n 9.4E+00 n 3.9E+01 n 4.0E+01 n 5.00E-03 I 0.04 ~Potassium Silver Cyanide 506-61-6 3.9E+02 n 5.8E+03 n 8.2E+01 n 1.00E-01 I 0.04 ~Silver Cyanide 506-64-9 7.8E+03 n 1.2E+05 nm 1.8E+03 n 1.00E-03 I 9.00E-03 C 1 ~Sodium Cyanide 143-33-9 7.8E+01 n 1.2E+03 n 9.4E+00 n 3.9E+01 n 2.0E+01 n 2.0E+02 5.00E-02 I 1 ~Zinc Cyanide 557-21-1 3.9E+03 n 5.8E+04 n 1.0E+03 n 6.00E+00 I V 1 1.17E+02 Cyclohexane 110-82-7 6.5E+03 ns 2.7E+04 ns 6.3E+03 n 2.6E+04 n 1.3E+04 n 1.3E+01 n 2.00E-02 X 2.00E-02 X 1 0.1 Cyclohexane, 1,2,3,4,5-pentabromo-6-chloro-87-84-3 2.7E+01 c*1.1E+02 c 2.8E+00 c 1.6E-02 c 5.00E+00 I 7.00E-01 P V 1 5.11E+03 Cyclohexanone 108-94-1 2.8E+04 ns 1.3E+05 nms 7.3E+02 n 3.1E+03 n 1.4E+03 n 3.4E-01 n 5.00E-03 P 1.00E+00 X V 1 2.83E+02 Cyclohexene 110-83-8 3.1E+02 ns 3.1E+03 ns 1.0E+03 n 4.4E+03 n 7.0E+01 n 4.6E-02 n 2.00E-01 I V 1 2.93E+05 Cyclohexylamine 108-91-8 1.6E+04 n 2.3E+05 nm 3.8E+03 n 1.0E+00 n 2.50E-02 I 1 0.1 Cyfluthrin 68359-37-5 1.6E+03 n 2.1E+04 n 1.2E+02 n 3.1E+01 n 5.00E-01 O 1 0.1 Cyromazine 66215-27-8 3.2E+04 n 4.1E+05 nm 9.9E+03 n 2.5E+00 n 3.00E-02 I 1 0.1 Dalapon 75-99-0 1.9E+03 n 2.5E+04 n 6.0E+02 n 2.0E+02 1.2E-01 n 4.1E-02 1.80E-02 C 5.10E-06 C 1.50E-01 I 1 0.1 Daminozide 1596-84-5 3.0E+01 c 1.3E+02 c 5.5E-01 c 2.4E+00 c 4.3E+00 c 9.5E-04 c 7.00E-04 I 7.00E-03 I 1 0.1 Decabromodiphenyl ether, 2,2',3,3',4,4',5,5',6,6'- (BDE-209)1163-19-5 4.4E+02 n 3.3E+03 c**1.1E+02 c**6.2E+01 c** 4.00E-05 I 1 0.1 Demeton 8065-48-3 2.5E+00 n 3.3E+01 n 4.2E-01 n 1.20E-03 I 6.00E-01 I 1 0.1 Di(2-ethylhexyl)adipate 103-23-1 4.5E+02 c*1.9E+03 c 6.5E+01 c 4.0E+02 4.7E+00 c 2.9E+01 6.10E-02 H 1 0.1 Diallate 2303-16-4 8.9E+00 c 3.8E+01 c 5.4E-01 c 8.0E-04 c 7.00E-04 A 1 0.1 Diazinon 333-41-5 4.4E+01 n 5.7E+02 n 1.0E+01 n 6.5E-02 n 8.00E-01 P 6.00E-03 P 2.00E-04 P 2.00E-04 I V M 1 9.79E+02 Dibromo-3-chloropropane, 1,2-96-12-8 5.3E-03 c 6.4E-02 c 1.7E-04 c 2.0E-03 c 3.3E-04 c 2.0E-01 1.4E-07 c 8.6E-05 2.50E-01 C 3.00E-04 C 1 0.1 Dibromoacetic acid 631-64-1 2.2E+00 c**9.2E+00 c*3.1E-01 c*6.0E+01(G)6.3E-05 c*1.2E-02 4.00E-04 X V 1 1.59E+02 Dibromobenzene, 1,3-108-36-1 3.1E+01 n 4.7E+02 ns 5.3E+00 n 5.1E-03 n 1.00E-02 I V 1 Dibromobenzene, 1,4-106-37-6 7.8E+02 n 1.2E+04 n 1.3E+02 n 1.2E-01 n 8.40E-02 I 2.00E-02 I V 1 8.02E+02 Dibromochloromethane 124-48-1 8.3E+00 c 3.9E+01 c 8.7E-01 c 8.0E+01(G)2.3E-04 c 2.1E-02 2.00E+00 I 6.00E-04 I 9.00E-03 I 9.00E-03 I V 1 1.34E+03 Dibromoethane, 1,2-106-93-4 3.6E-02 c 1.6E-01 c 4.7E-03 c 2.0E-02 c 7.5E-03 c 5.0E-02 2.1E-06 c 1.4E-05 4.00E-03 X V 1 2.82E+03 Dibromomethane (Methylene Bromide)74-95-3 2.4E+01 n 9.9E+01 n 4.2E+00 n 1.8E+01 n 8.3E+00 n 2.1E-03 n 3.00E-04 P 1 0.1 Dibutyltin Compounds E1790661 1.9E+01 n 2.5E+02 n 6.0E+00 n 3.00E-02 I 1 0.1 Dicamba 1918-00-9 1.9E+03 n 2.5E+04 n 5.7E+02 n 1.5E-01 n 1 0.1 Dichloramine 3400-09-7 4.0E+03(G) 4.20E-03 P V 1 5.54E+02 Dichloro-2-butene, 1,4-764-41-0 2.1E-03 c 9.4E-03 c 6.7E-04 c 2.9E-03 c 1.3E-03 c 6.6E-07 c 4.20E-03 P V 1 5.19E+02 Dichloro-2-butene, cis-1,4-1476-11-5 7.4E-03 c 3.2E-02 c 6.7E-04 c 2.9E-03 c 1.3E-03 c 6.2E-07 c 4.20E-03 P V 1 7.60E+02 Dichloro-2-butene, trans-1,4-110-57-6 7.4E-03 c 3.2E-02 c 6.7E-04 c 2.9E-03 c 1.3E-03 c 6.2E-07 c 5.00E-02 I 4.00E-03 I 1 0.1 Dichloroacetic Acid 79-43-6 1.1E+01 c*4.6E+01 c*1.5E+00 c*6.0E+01(G)3.1E-04 c*1.2E-02 9.00E-02 I 2.00E-01 H V 1 3.76E+02 Dichlorobenzene, 1,2-95-50-1 1.8E+03 ns 9.3E+03 ns 2.1E+02 n 8.8E+02 n 3.0E+02 n 6.0E+02 3.0E-01 n 5.8E-01 5.40E-03 C 1.10E-05 C 7.00E-02 A 8.00E-01 I V 1 Dichlorobenzene, 1,4-106-46-7 2.6E+00 c 1.1E+01 c 2.6E-01 c 1.1E+00 c 4.8E-01 c 7.5E+01 4.6E-04 c 7.2E-02 4.50E-01 I 3.40E-04 C 1 0.1 Dichlorobenzidine, 3,3'-91-94-1 1.2E+00 c 5.1E+00 c 8.3E-03 c 3.6E-02 c 1.3E-01 c 8.2E-04 c 9.00E-03 X 1 0.1 Dichlorobenzophenone, 4,4'-90-98-2 5.7E+02 n 7.4E+03 n 7.8E+01 n 4.7E-01 n 2.00E-01 I 1.00E-01 X V 1 8.45E+02 Dichlorodifluoromethane 75-71-8 8.7E+01 n 3.7E+02 n 1.0E+02 n 4.4E+02 n 2.0E+02 n 3.0E-01 n 2.40E-01 I 6.90E-05 C 5.00E-04 A 1 0.1 Dichlorodiphenyldichloroethane, p,p'- (DDD)72-54-8 2.3E+00 c*9.6E+00 c*4.1E-02 c 1.8E-01 c 3.2E-02 c*7.5E-03 c* 3.40E-01 I 9.70E-05 C 5.00E-04 A V 1 Dichlorodiphenyldichloroethylene, p,p'- (DDE)72-55-9 2.0E+00 c*9.3E+00 c*2.9E-02 c 1.3E-01 c 4.6E-02 c 1.1E-02 c 3.40E-01 I 9.70E-05 I 5.00E-04 I 1 0.03 Dichlorodiphenyltrichloroethane, p,p'- (DDT)50-29-3 1.9E+00 c*8.5E+00 c*2.9E-02 c 1.3E-01 c 2.3E-01 c*7.7E-02 c* 5.70E-03 C 1.60E-06 C 2.00E-01 P V 1 1.69E+03 Dichloroethane, 1,1-75-34-3 3.6E+00 c 1.6E+01 c 1.8E+00 c 7.7E+00 c 2.8E+00 c 7.8E-04 c 9.10E-02 I 2.60E-05 I 6.00E-03 X 7.00E-03 P V 1 2.98E+03 Dichloroethane, 1,2-107-06-2 4.6E-01 c*2.0E+00 c*1.1E-01 c*4.7E-01 c*1.7E-01 c*5.0E+00 4.8E-05 c*1.4E-03 5.00E-02 I 3.96E-03 A V 1 1.19E+03 Dichloroethylene, 1,1-75-35-4 4.8E+00 n 2.0E+01 n 4.1E+00 n 1.7E+01 n 8.2E+00 n 7.0E+00 2.9E-03 n 2.5E-03 2.00E-03 I 4.00E-02 X V 1 2.37E+03 Dichloroethylene, cis-1,2-156-59-2 6.3E+01 n 3.7E+02 n 4.2E+01 n 1.8E+02 n 2.5E+01 n 7.0E+01 7.4E-03 n 2.1E-02 2.00E-02 I 4.00E-02 X V 1 1.85E+03 Dichloroethylene, trans-1,2-156-60-5 7.0E+01 n 3.0E+02 n 4.2E+01 n 1.8E+02 n 6.8E+01 n 1.0E+02 2.1E-02 n 3.1E-02 3.00E-03 I 1 0.1 Dichlorophenol, 2,4-120-83-2 1.9E+02 n 2.5E+03 n 4.6E+01 n 2.3E-02 n 1.00E-02 I 1 0.05 Dichlorophenoxy Acetic Acid, 2,4-94-75-7 7.0E+02 n 9.6E+03 n 1.7E+02 n 7.0E+01 4.5E-02 n 1.8E-02 3.70E-02 P 3.70E-06 P 4.00E-02 P 4.00E-03 I V 1 1.36E+03 Dichloropropane, 1,2-78-87-5 2.5E+00 c**1.1E+01 c**7.6E-01 c**3.3E+00 c**8.5E-01 c**5.0E+00 2.8E-04 c**1.7E-03 2.00E-02 P V 1 1.49E+03 Dichloropropane, 1,3-142-28-9 1.6E+03 ns 2.3E+04 ns 3.7E+02 n 1.3E-01 n Page 3 of 12 Regional Screening Level (RSL) Summary Table (TR=1E-06, HQ=1) November 2024 SFO (mg/kg-day)-1 k e y IUR (ug/m3)-1 k e y RfDo (mg/kg-day) k e y RfCi (mg/m3) k e y v o l mutagen GIABS ABSd Csat (mg/kg) Analyte CAS No. Resident Soil (mg/kg) k e y Industrial Soil (mg/kg) k e y Resident Air (ug/m3) k e y Industrial Air (ug/m3) k e y Tap Water (ug/L) k e y MCL (ug/L) Risk-based SSL (mg/kg) k e y MCL-based SSL (mg/kg) Key: I = IRIS; P = PPRTV; O = OPP; A = ATSDR; T = ATSDR DRAFT; C = Cal EPA; X = PPRTV Screening Level; H = HEAST; D = OW; R = ORD; N = WI; W = TEF applied; E = RPF applied; G = see user's guide; c = cancer; n = noncancer; * = where: nc SL < 100X ca SL; ** = where nc SL < 10X ca SL; SSL values are based on DAF=1; m = ceiling limit exceeded; s = Csat exceeded; V = volatile; M = mutagen. Toxicity and Chemical-specific Information Contaminant Screening Levels Protection of Groundwater 3.00E-03 I 1 0.1 Dichloropropanol, 2,3-616-23-9 1.9E+02 n 2.5E+03 n 5.9E+01 n 1.3E-02 n 1.00E-01 I 4.00E-06 I 3.00E-02 I 2.00E-02 I V 1 1.57E+03 Dichloropropene, 1,3-542-75-6 1.8E+00 c*8.2E+00 c*7.0E-01 c*3.1E+00 c*4.7E-01 c*1.7E-04 c* 2.90E-01 I 8.30E-05 C 5.00E-04 I 5.00E-04 I 1 0.1 Dichlorvos 62-73-7 1.9E+00 c*7.9E+00 c*3.4E-02 c*1.5E-01 c*2.6E-01 c*8.1E-05 c* 3.00E-05 O 1 0.1 Dicrotophos 141-66-2 1.9E+00 n 2.5E+01 n 6.0E-01 n 1.4E-04 n 8.00E-02 P 3.00E-04 X V 1 2.56E+02 Dicyclopentadiene 77-73-6 1.3E+00 n 5.4E+00 n 3.1E-01 n 1.3E+00 n 6.3E-01 n 2.2E-03 n 1.60E+01 I 4.60E-03 I 5.00E-05 I 1 0.1 Dieldrin 60-57-1 3.4E-02 c*1.4E-01 c 6.1E-04 c 2.7E-03 c 1.8E-03 c 7.1E-05 c 3.00E-04 C 5.00E-03 I 1 0.1 Diesel Engine Exhaust E17136615 9.4E-03 c 4.1E-02 c 2.00E-03 P 2.00E-04 P 1 0.1 Diethanolamine 111-42-2 1.3E+02 n 1.6E+03 n 2.1E-01 n 8.8E-01 n 4.0E+01 n 8.1E-03 n 3.00E-02 P 1.00E-04 P 1 0.1 Diethylene Glycol Monobutyl Ether 112-34-5 1.9E+03 n 2.4E+04 n 1.0E-01 n 4.4E-01 n 6.0E+02 n 1.3E-01 n 6.00E-02 P 3.00E-04 P 1 0.1 Diethylene Glycol Monoethyl Ether 111-90-0 3.8E+03 n 4.8E+04 n 3.1E-01 n 1.3E+00 n 1.2E+03 n 2.4E-01 n 1.00E-03 P V 1 1.12E+05 Diethylformamide 617-84-5 7.8E+01 n 1.2E+03 n 2.0E+01 n 4.1E-03 n 3.50E+02 C 1.00E-01 C 1 0.1 Diethylstilbestrol 56-53-1 1.6E-03 c 6.6E-03 c 2.8E-05 c 1.2E-04 c 5.1E-05 c 2.8E-05 c 8.30E-02 O 1 0.1 Difenzoquat 43222-48-6 5.2E+03 n 6.8E+04 n 1.7E+03 n 2.6E+02 n 2.00E-02 I 1 0.1 Diflubenzuron 35367-38-5 1.3E+03 n 1.6E+04 n 2.9E+02 n 3.3E-01 n 4.00E+01 I V 1 1.43E+03 Difluoroethane, 1,1-75-37-6 4.8E+04 ns 2.0E+05 nms 4.2E+04 n 1.8E+05 n 8.3E+04 n 2.8E+01 n 3.00E+01 X V 1 6.91E+02 Difluoropropane, 2,2-420-45-1 2.4E+04 ns 1.0E+05 ns 3.1E+04 n 1.3E+05 n 6.3E+04 n 1.4E+02 n 4.40E-02 C 1.30E-05 C V 1 Dihydrosafrole 94-58-6 9.9E+00 c 4.5E+01 c 2.2E-01 c 9.4E-01 c 3.0E-01 c 1.9E-04 c 7.00E-01 P V 1 2.26E+03 Diisopropyl Ether 108-20-3 2.2E+03 n 9.4E+03 ns 7.3E+02 n 3.1E+03 n 1.5E+03 n 3.7E-01 n 8.00E-02 I V 1 5.30E+02 Diisopropyl Methylphosphonate 1445-75-6 6.3E+03 ns 9.3E+04 ns 1.6E+03 n 4.5E-01 n 2.18E-02 O 1 0.1 Dimethipin 55290-64-7 1.4E+03 n 1.8E+04 n 4.4E+02 n 9.6E-02 n 2.20E-03 O 1 0.1 Dimethoate 60-51-5 1.4E+02 n 1.8E+03 n 4.4E+01 n 9.9E-03 n 1.60E+00 P M 1 0.1 Dimethoxybenzidine, 3,3'-119-90-4 7.6E-02 c 1.4E+00 c 1.5E-02 c 1.9E-05 c 2.00E-02 X 2.00E-04 X V 1 5.35E+03 Dimethyl Sulfide 75-18-3 6.2E-01 n 2.6E+00 n 2.1E-01 n 8.8E-01 n 4.2E-01 n 1.0E-04 n 1.70E-03 P 6.00E-02 P 1 0.1 Dimethyl methylphosphonate 756-79-6 3.2E+02 c*1.4E+03 c*4.6E+01 c*9.6E-03 c* 4.60E+00 C 1.30E-03 C 1 0.1 Dimethylamino azobenzene [p-]60-11-7 1.2E-01 c 5.0E-01 c 2.2E-03 c 9.4E-03 c 5.0E-03 c 2.1E-05 c 5.80E-01 H 1 0.1 Dimethylaniline HCl, 2,4-21436-96-4 9.4E-01 c 4.0E+00 c 1.3E-01 c 1.2E-04 c 2.00E-01 P 2.00E-03 X 1 0.1 Dimethylaniline, 2,4-95-68-1 2.7E+00 c*1.1E+01 c 3.7E-01 c 2.1E-04 c 2.70E-02 P 2.00E-03 I V 1 8.30E+02 Dimethylaniline, N,N-121-69-7 2.6E+01 c**1.2E+02 c*2.5E+00 c*9.0E-04 c* 1.10E+01 P M 1 0.1 Dimethylbenzidine, 3,3'-119-93-7 1.1E-02 c 2.1E-01 c 2.1E-03 c 1.4E-05 c 1.00E-01 P 3.00E-02 I V 1 1.06E+05 Dimethylformamide 68-12-2 2.6E+03 n 1.5E+04 n 3.1E+01 n 1.3E+02 n 6.1E+01 n 1.2E-02 n 1.00E-04 X 2.00E-06 X V 1 1.72E+05 Dimethylhydrazine, 1,1-57-14-7 5.7E-02 n 2.4E-01 n 2.1E-03 n 8.8E-03 n 4.2E-03 n 9.3E-07 n 5.50E+02 C 1.60E-01 C V 1 1.89E+05 Dimethylhydrazine, 1,2-540-73-8 8.8E-04 c 4.1E-03 c 1.8E-05 c 7.7E-05 c 2.8E-05 c 6.5E-09 c 2.00E-02 I 1 0.1 Dimethylphenol, 2,4-105-67-9 1.3E+03 n 1.6E+04 n 3.6E+02 n 4.2E-01 n 6.00E-04 I 1 0.1 Dimethylphenol, 2,6-576-26-1 3.8E+01 n 4.9E+02 n 1.1E+01 n 1.3E-02 n 1.00E-03 I 1 0.1 Dimethylphenol, 3,4-95-65-8 6.3E+01 n 8.2E+02 n 1.8E+01 n 2.1E-02 n 4.50E-02 C 1.30E-05 C V 1 4.73E+02 Dimethylvinylchloride 513-37-1 1.1E+00 c 4.8E+00 c 2.2E-01 c 9.4E-01 c 3.3E-01 c 1.1E-04 c 8.00E-05 X 1 0.1 Dinitro-o-cresol, 4,6-534-52-1 5.1E+00 n 6.6E+01 n 1.5E+00 n 2.6E-03 n 2.00E-03 I 1 0.1 Dinitro-o-cyclohexyl Phenol, 4,6-131-89-5 1.3E+02 n 1.6E+03 n 2.3E+01 n 7.7E-01 n 4.00E-04 X 2.00E-03 X 1 0.1 Dinitroaniline, 3,5-618-87-1 2.5E+01 n 3.3E+02 n 2.1E+00 n 8.8E+00 n 7.7E+00 n 4.1E-03 n 1.00E-04 P 1 0.1 Dinitrobenzene, 1,2-528-29-0 6.3E+00 n 8.2E+01 n 1.9E+00 n 1.8E-03 n 1.00E-04 I 1 0.1 Dinitrobenzene, 1,3-99-65-0 6.3E+00 n 8.2E+01 n 2.0E+00 n 1.8E-03 n 1.00E-04 P 1 0.1 Dinitrobenzene, 1,4-100-25-4 6.3E+00 n 8.2E+01 n 2.0E+00 n 1.8E-03 n 2.00E-03 I 1 0.1 Dinitrophenol, 2,4-51-28-5 1.3E+02 n 1.6E+03 n 3.9E+01 n 4.4E-02 n 6.80E-01 I 1 0.1 Dinitrotoluene Mixture, 2,4/2,6-E1615210 8.0E-01 c 3.4E+00 c 1.1E-01 c 1.5E-04 c 3.10E-01 C 8.90E-05 C 2.00E-03 I 1 0.102 Dinitrotoluene, 2,4-121-14-2 1.7E+00 c*7.4E+00 c 3.2E-02 c 1.4E-01 c 2.4E-01 c 3.2E-04 c 1.50E+00 P 3.00E-04 X 1 0.099 Dinitrotoluene, 2,6-606-20-2 3.6E-01 c*1.5E+00 c 4.9E-02 c 6.7E-05 c 1.00E-04 X 1 0.006 Dinitrotoluene, 2-Amino-4,6-35572-78-2 7.7E+00 n 1.1E+02 n 1.9E+00 n 1.5E-03 n 1.00E-04 X 1 0.009 Dinitrotoluene, 4-Amino-2,6-19406-51-0 7.7E+00 n 1.1E+02 n 1.9E+00 n 1.5E-03 n 4.50E-01 X 9.00E-04 X 1 0.1 Dinitrotoluene, Technical grade 25321-14-6 1.2E+00 c*5.1E+00 c 1.0E-01 c 1.4E-04 c 1.00E-03 I 1 0.1 Dinoseb 88-85-7 6.3E+01 n 8.2E+02 n 1.5E+01 n 7.0E+00 1.3E-01 n 6.2E-02 1.00E-01 I 5.00E-06 I 3.00E-02 I 3.00E-02 I V 1 1.16E+05 Dioxane, 1,4-123-91-1 5.3E+00 c 2.4E+01 c 5.6E-01 c*2.5E+00 c*4.6E-01 c 9.4E-05 c Dioxins 6.20E+03 I 1.30E+00 I 1 0.03 ~Hexachlorodibenzo-p-dioxin, Mixture 34465-46-8 1.0E-04 c 4.7E-04 c 2.2E-06 c 9.4E-06 c 1.3E-05 c 1.7E-05 c 1.30E+05 C 3.80E+01 C 7.00E-10 I 4.00E-08 C V 1 0.03 ~TCDD, 2,3,7,8-1746-01-6 4.8E-06 c*2.2E-05 c*7.4E-08 c 3.2E-07 c 1.2E-07 c 3.0E-05 5.9E-08 c 1.5E-05 3.00E-02 I 1 0.1 Diphenamid 957-51-7 1.9E+03 n 2.5E+04 n 5.3E+02 n 5.2E+00 n 4.00E-04 X V 1 Diphenyl Ether 101-84-8 3.4E+01 n 1.4E+02 n 4.2E-01 n 1.8E+00 n 8.3E-01 n 3.4E-03 n 8.00E-04 X 1 0.1 Diphenyl Sulfone 127-63-9 5.1E+01 n 6.6E+02 n 1.5E+01 n 3.6E-02 n 1.00E-01 O 1 0.1 Diphenylamine 122-39-4 6.3E+03 n 8.2E+04 n 1.3E+03 n 2.3E+00 n 8.00E-01 I 2.20E-04 I 1 0.1 Diphenylhydrazine, 1,2-122-66-7 6.8E-01 c 2.9E+00 c 1.3E-02 c 5.6E-02 c 7.8E-02 c 2.5E-04 c 2.20E-03 I 1 0.1 Diquat 2764-72-9 1.4E+02 n 1.8E+03 n 4.0E+01 n 2.0E+01 3.3E-01 n 1.7E-01 7.40E+00 C 2.10E-03 C 1 0.1 Direct Black 38 1937-37-7 7.3E-02 c 3.1E-01 c 1.3E-03 c 5.8E-03 c 1.1E-02 c 5.1E+00 c 7.40E+00 C 2.10E-03 C 1 0.1 Direct Blue 6 2602-46-2 7.3E-02 c 3.1E-01 c 1.3E-03 c 5.8E-03 c 1.1E-02 c 1.7E+01 c 6.70E+00 C 1.90E-03 C 1 0.1 Direct Brown 95 16071-86-6 8.1E-02 c 3.4E-01 c 1.5E-03 c 6.5E-03 c 1.2E-02 c 1.6E-01 c 4.00E-05 I 1 0.1 Disulfoton 298-04-4 2.5E+00 n 3.3E+01 n 5.0E-01 n 9.4E-04 n 1.00E-02 I V 1 Dithiane, 1,4-505-29-3 7.8E+02 n 1.2E+04 n 2.0E+02 n 9.7E-02 n 2.00E-03 I 1 0.1 Diuron 330-54-1 1.3E+02 n 1.6E+03 n 3.6E+01 n 1.5E-02 n 2.00E-02 O 1 0.1 Dodine 2439-10-3 1.3E+03 n 1.6E+04 n 4.0E+02 n 2.1E+00 n 5.00E-02 O V 1 EPTC 759-94-4 3.9E+03 n 5.8E+04 n 7.5E+02 n 4.0E-01 n 6.00E-03 I V 1 Endosulfan 115-29-7 4.7E+02 n 7.0E+03 n 1.0E+02 n 1.4E+00 n 6.00E-03 P 1 0.1 Endosulfan Sulfate 1031-07-8 3.8E+02 n 4.9E+03 n 1.1E+02 n 2.1E+00 n 2.00E-02 I 1 0.1 Endothall 145-73-3 1.3E+03 n 1.6E+04 n 3.8E+02 n 1.0E+02 9.1E-02 n 2.4E-02 3.00E-04 I 1 0.1 Endrin 72-20-8 1.9E+01 n 2.5E+02 n 2.3E+00 n 2.0E+00 9.2E-02 n 8.1E-02 9.90E-03 I 1.20E-06 I 6.00E-03 P 1.00E-03 I V 1 1.05E+04 Epichlorohydrin 106-89-8 1.9E+01 n 8.2E+01 n 1.0E+00 n 4.4E+00 n 2.0E+00 n 4.5E-04 n 2.00E-02 I V 1 1.53E+04 Epoxybutane, 1,2-106-88-7 1.6E+02 n 6.7E+02 n 2.1E+01 n 8.8E+01 n 4.2E+01 n 9.2E-03 n 4.00E-02 P 1 0.1 Ethanol, 2-(2-methoxyethoxy)-111-77-3 2.5E+03 n 3.3E+04 n 8.0E+02 n 1.6E-01 n 5.00E-03 I 1 0.1 Ethephon 16672-87-0 3.2E+02 n 4.1E+03 n 1.0E+02 n 2.1E-02 n 5.00E-04 I 1 0.1 Ethion 563-12-2 3.2E+01 n 4.1E+02 n 4.3E+00 n 8.5E-03 n 1.00E-01 P 6.00E-02 P V 1 2.38E+04 Ethoxyethanol Acetate, 2-111-15-9 2.6E+03 n 1.4E+04 n 6.3E+01 n 2.6E+02 n 1.2E+02 n 2.5E-02 n Page 4 of 12 Regional Screening Level (RSL) Summary Table (TR=1E-06, HQ=1) November 2024 SFO (mg/kg-day)-1 k e y IUR (ug/m3)-1 k e y RfDo (mg/kg-day) k e y RfCi (mg/m3) k e y v o l mutagen GIABS ABSd Csat (mg/kg) Analyte CAS No. Resident Soil (mg/kg) k e y Industrial Soil (mg/kg) k e y Resident Air (ug/m3) k e y Industrial Air (ug/m3) k e y Tap Water (ug/L) k e y MCL (ug/L) Risk-based SSL (mg/kg) k e y MCL-based SSL (mg/kg) Key: I = IRIS; P = PPRTV; O = OPP; A = ATSDR; T = ATSDR DRAFT; C = Cal EPA; X = PPRTV Screening Level; H = HEAST; D = OW; R = ORD; N = WI; W = TEF applied; E = RPF applied; G = see user's guide; c = cancer; n = noncancer; * = where: nc SL < 100X ca SL; ** = where nc SL < 10X ca SL; SSL values are based on DAF=1; m = ceiling limit exceeded; s = Csat exceeded; V = volatile; M = mutagen. Toxicity and Chemical-specific Information Contaminant Screening Levels Protection of Groundwater 9.00E-02 P 4.00E-02 P V 1 1.06E+05 Ethoxyethanol, 2-110-80-5 2.6E+03 n 1.5E+04 n 4.2E+01 n 1.8E+02 n 8.0E+01 n 1.6E-02 n 7.00E-01 P 7.00E-02 P V 1 1.08E+04 Ethyl Acetate 141-78-6 6.2E+02 n 2.6E+03 n 7.3E+01 n 3.1E+02 n 1.4E+02 n 3.1E-02 n 5.00E-03 P 8.00E-03 P V 1 2.50E+03 Ethyl Acrylate 140-88-5 4.7E+01 n 2.1E+02 n 8.3E+00 n 3.5E+01 n 1.4E+01 n 3.2E-03 n 4.00E+00 P V 1 2.12E+03 Ethyl Chloride (Chloroethane)75-00-3 5.4E+03 ns 2.3E+04 ns 4.2E+03 n 1.8E+04 n 8.3E+03 n 2.4E+00 n 2.00E-01 I V 1 1.01E+04 Ethyl Ether 60-29-7 1.6E+04 ns 2.3E+05 nms 3.9E+03 n 8.8E-01 n 3.00E-01 P V 1 1.10E+03 Ethyl Methacrylate 97-63-2 1.8E+03 ns 7.6E+03 ns 3.1E+02 n 1.3E+03 n 6.3E+02 n 1.5E-01 n 8.00E-08 I 1.00E+00 I 4.00E+01 I V 1 2.87E+03 Ethyl Tertiary Butyl Ether (ETBE)637-92-3 1.3E+02 c 5.6E+02 c 3.5E+01 c 1.5E+02 c 7.0E+01 c 1.7E-02 c 1.00E-05 I 1 0.1 Ethyl-p-nitrophenyl Phosphonate 2104-64-5 6.3E-01 n 8.2E+00 n 8.9E-02 n 2.8E-03 n 1.10E-02 C 2.50E-06 C 5.00E-02 P 1.00E+00 I V 1 4.80E+02 Ethylbenzene 100-41-4 5.8E+00 c 2.5E+01 c 1.1E+00 c 4.9E+00 c 1.5E+00 c 7.0E+02 1.7E-03 c 7.8E-01 7.00E-02 P 1 0.1 Ethylene Cyanohydrin 109-78-4 4.4E+03 n 5.7E+04 n 1.4E+03 n 2.8E-01 n 9.00E-02 P V 1 1.89E+05 Ethylene Diamine 107-15-3 7.0E+03 n 1.1E+05 nm 1.8E+03 n 4.1E-01 n 8.00E-01 A 4.00E-01 C 1 0.1 Ethylene Glycol 107-21-1 5.1E+04 n 6.6E+05 nm 4.2E+02 n 1.8E+03 n 1.6E+04 n 3.2E+00 n 1.00E-01 I 1.60E+00 I 1 0.1 Ethylene Glycol Monobutyl Ether 111-76-2 6.3E+03 n 8.2E+04 n 1.7E+03 n 7.0E+03 n 2.0E+03 n 4.1E-01 n 3.10E-01 C 3.00E-03 I 3.00E-02 C V M 1 1.21E+05 Ethylene Oxide 75-21-8 2.0E-03 c 2.5E-02 c 3.4E-04 c 4.1E-03 c 6.7E-04 c 1.4E-07 c 4.50E-02 C 1.30E-05 C 8.00E-05 I 1 0.1 Ethylene Thiourea 96-45-7 5.1E+00 n 5.1E+01 c**2.2E-01 c 9.4E-01 c 1.6E+00 n 3.6E-04 n 6.50E+01 C 1.90E-02 C V 1 1.54E+05 Ethyleneimine 151-56-4 2.7E-03 c 1.2E-02 c 1.5E-04 c 6.5E-04 c 2.4E-04 c 5.2E-08 c 3.00E+00 I 1 0.1 Ethylphthalyl Ethyl Glycolate 84-72-0 1.9E+05 nm 2.5E+06 nm 5.8E+04 n 1.3E+02 n 2.50E-04 I 1 0.1 Fenamiphos 22224-92-6 1.6E+01 n 2.1E+02 n 4.4E+00 n 4.3E-03 n 2.50E-02 I 1 0.1 Fenpropathrin 39515-41-8 1.6E+03 n 2.1E+04 n 6.4E+01 n 2.9E+00 n 2.50E-02 I 1 0.1 Fenvalerate 51630-58-1 1.6E+03 n 2.1E+04 n 5.0E+02 n 3.2E+02 n 1.30E-02 I 1 0.1 Fluometuron 2164-17-2 8.2E+02 n 1.1E+04 n 2.4E+02 n 1.9E-01 n 4.00E-02 C 1.30E-02 C 1 Fluoride 16984-48-8 3.1E+03 n 4.7E+04 n 1.4E+01 n 5.7E+01 n 8.0E+02 n 4.0E+03 1.2E+02 n 6.0E+02 6.00E-02 I 1.30E-02 C 1 Fluorine (Soluble Fluoride)7782-41-4 4.7E+03 n 7.0E+04 n 1.4E+01 n 5.7E+01 n 1.2E+03 n 4.0E+03 1.8E+02 n 6.0E+02 8.00E-02 I 1 0.1 Fluridone 59756-60-4 5.1E+03 n 6.6E+04 n 1.4E+03 n 1.6E+02 n 4.00E-02 O 1 0.1 Flurprimidol 56425-91-3 2.5E+03 n 3.3E+04 n 6.9E+02 n 3.1E+00 n 2.00E-03 O 1 0.1 Flusilazole 85509-19-9 1.3E+02 n 1.6E+03 n 3.1E+01 n 5.1E+00 n 5.00E-01 O 1 0.1 Flutolanil 66332-96-5 3.2E+04 n 4.1E+05 nm 7.9E+03 n 4.2E+01 n 1.00E-02 I 1 0.1 Fluvalinate 69409-94-5 6.3E+02 n 8.2E+03 n 2.0E+02 n 2.9E+02 n 9.00E-02 O 1 0.1 Folpet 133-07-3 5.7E+03 n 7.4E+04 n 1.6E+03 n 3.9E-01 n 1.00E-02 O 1 0.1 Fomesafen 72178-02-0 6.3E+02 n 8.2E+03 n 1.9E+02 n 6.3E-01 n 2.00E-03 I 1 0.1 Fonofos 944-22-9 1.3E+02 n 1.6E+03 n 2.4E+01 n 4.7E-02 n 2.10E-02 C 7.40E-06 I 2.00E-01 I 7.00E-03 I V M 1 4.24E+04 Formaldehyde 50-00-0 4.3E+00 c 7.0E+01 c*1.4E-01 c*1.7E+00 c*2.2E-01 c*4.5E-05 c* 9.00E-01 P 3.00E-04 X V 1 1.06E+05 Formic Acid 64-18-6 2.9E+01 n 1.2E+02 n 3.1E-01 n 1.3E+00 n 6.3E-01 n 1.3E-04 n 2.50E+00 O 1 0.1 Fosetyl-AL 39148-24-8 1.6E+05 nm 2.1E+06 nm 5.0E+04 n 6.6E+02 n Furans 1.00E-03 X V 1 ~Dibenzofuran 132-64-9 7.8E+01 n 1.2E+03 n 7.9E+00 n 1.5E-01 n 1.00E-03 I V 1 6.22E+03 ~Furan 110-00-9 7.8E+01 n 1.2E+03 n 1.9E+01 n 7.3E-03 n 9.00E-01 I 2.00E+00 I V 1 1.65E+05 ~Tetrahydrofuran 109-99-9 1.8E+04 n 9.5E+04 n 2.1E+03 n 8.8E+03 n 3.4E+03 n 7.5E-01 n 3.80E+00 H 1 0.1 Furazolidone 67-45-8 1.4E-01 c 6.0E-01 c 2.0E-02 c 3.9E-05 c 3.00E-03 I 5.00E-02 H V 1 1.01E+04 Furfural 98-01-1 2.1E+02 n 2.6E+03 n 5.2E+01 n 2.2E+02 n 3.8E+01 n 8.1E-03 n 1.50E+00 C 4.30E-04 C 1 0.1 Furium 531-82-8 3.6E-01 c 1.5E+00 c 6.5E-03 c 2.9E-02 c 5.1E-02 c 6.8E-05 c 3.00E-02 I 8.60E-06 C 1 0.1 Furmecyclox 60568-05-0 1.8E+01 c 7.7E+01 c 3.3E-01 c 1.4E+00 c 1.1E+00 c 1.2E-03 c 6.00E-03 O 1 0.1 Glufosinate, Ammonium 77182-82-2 3.8E+02 n 4.9E+03 n 1.2E+02 n 2.6E-02 n 1.00E-01 A 8.00E-05 C 1 0.1 Glutaraldehyde 111-30-8 6.0E+03 n 7.0E+04 n 8.3E-02 n 3.5E-01 n 2.0E+03 n 4.0E-01 n 4.00E-04 I 1.00E-03 X V 1 1.06E+05 Glycidaldehyde 765-34-4 2.3E+01 n 2.1E+02 n 1.0E+00 n 4.4E+00 n 1.7E+00 n 3.3E-04 n 1.00E-01 I 1 0.1 Glyphosate 1071-83-6 6.3E+03 n 8.2E+04 n 2.0E+03 n 7.0E+02 8.8E+00 n 3.1E+00 1.00E-02 X V 1 Guanidine 113-00-8 7.8E+02 n 1.2E+04 n 2.0E+02 n 4.5E-02 n 2.00E-02 P 1 0.1 Guanidine Chloride 50-01-1 1.3E+03 n 1.6E+04 n 4.0E+02 n 3.00E-02 X 1 0.1 Guanidine Nitrate 506-93-4 1.9E+03 n 2.5E+04 n 6.0E+02 n 1.5E-01 n 5.00E-05 I 1 0.1 Haloxyfop, Methyl 69806-40-2 3.2E+00 n 4.1E+01 n 7.6E-01 n 8.4E-03 n 4.50E+00 I 1.30E-03 I 1.00E-04 A V 1 Heptachlor 76-44-8 1.3E-01 c*6.3E-01 c 2.2E-03 c 9.4E-03 c 1.4E-03 c 4.0E-01 1.2E-04 c 3.3E-02 9.10E+00 I 2.60E-03 I 1.30E-05 I V 1 Heptachlor Epoxide 1024-57-3 7.0E-02 c*3.3E-01 c*1.1E-03 c 4.7E-03 c 1.4E-03 c*2.0E-01 2.8E-05 c*4.1E-03 3.00E-03 X V 1 2.09E+02 Heptanal, n-111-71-7 2.4E+01 n 1.0E+02 n 3.1E+00 n 1.3E+01 n 6.3E+00 n 1.4E-03 n 3.00E-04 X 4.00E-01 P V 1 5.79E+01 Heptane, N-142-82-5 2.2E+01 n 2.9E+02 ns 4.2E+02 n 1.8E+03 n 6.0E+00 n 4.8E-02 n 2.00E-03 I V 1 Hexabromobenzene 87-82-1 1.6E+02 n 2.3E+03 n 4.0E+01 n 2.3E-01 n 2.00E-04 I 1 0.1 Hexabromodiphenyl ether, 2,2',4,4',5,5'- (BDE-153)68631-49-2 1.3E+01 n 1.6E+02 n 4.0E+00 n 1.60E+00 I 4.60E-04 I 1.00E-05 P V 1 Hexachlorobenzene 118-74-1 2.1E-01 c**9.6E-01 c*6.1E-03 c 2.7E-02 c 9.8E-03 c*1.0E+00 1.2E-04 c*1.3E-02 7.80E-02 I 2.20E-05 I 1.00E-03 P V 1 1.68E+01 Hexachlorobutadiene 87-68-3 1.2E+00 c*5.3E+00 c 1.3E-01 c 5.6E-01 c 1.4E-01 c*2.7E-04 c* 6.30E+00 I 1.80E-03 I 9.00E-04 A 1 0.1 Hexachlorocyclohexane, Alpha-319-84-6 8.6E-02 c 3.6E-01 c 1.6E-03 c 6.8E-03 c 7.2E-03 c 4.2E-05 c 1.80E+00 I 5.30E-04 I 1 0.1 Hexachlorocyclohexane, Beta-319-85-7 3.0E-01 c 1.3E+00 c 5.3E-03 c 2.3E-02 c 2.5E-02 c 1.5E-04 c 6.00E-08 X 1 0.1 Hexachlorocyclohexane, Delta-319-86-8 3.8E-03 n 4.9E-02 n 7.3E-04 n 4.2E-06 n 1.10E+00 C 3.10E-04 C 8.00E-07 A 1 0.04 Hexachlorocyclohexane, Gamma- (Lindane)58-89-9 5.7E-02 n 8.0E-01 n 9.1E-03 c 4.0E-02 c 9.7E-03 n 2.0E-01 5.7E-05 n 1.2E-03 1.80E+00 I 5.10E-04 I 1 0.1 Hexachlorocyclohexane, Technical 608-73-1 3.0E-01 c 1.3E+00 c 5.5E-03 c 2.4E-02 c 2.5E-02 c 1.5E-04 c 6.00E-03 I 2.00E-04 I V 1 1.57E+01 Hexachlorocyclopentadiene 77-47-4 1.8E+00 n 7.5E+00 n 2.1E-01 n 8.8E-01 n 4.1E-01 n 5.0E+01 1.3E-03 n 1.6E-01 4.00E-02 I 1.10E-05 C 7.00E-04 I 3.00E-02 I V 1 Hexachloroethane 67-72-1 1.8E+00 c*8.0E+00 c*2.6E-01 c 1.1E+00 c 3.3E-01 c*2.0E-04 c* 3.00E-04 I 1 0.1 Hexachlorophene 70-30-4 1.9E+01 n 2.5E+02 n 6.0E+00 n 8.0E+00 n 8.00E-02 I 4.00E-03 I 1 0.015 Hexahydro-1,3,5-trinitro-1,3,5-triazine (RDX)121-82-4 8.3E+00 c*3.8E+01 c 9.7E-01 c*3.7E-04 c* 1.00E-05 I V 1 3.39E+03 Hexamethylene Diisocyanate, 1,6-822-06-0 3.1E+00 n 1.3E+01 n 1.0E-02 n 4.4E-02 n 2.1E-02 n 2.1E-04 n 4.00E-04 C 1 0.1 Hexamethylene diisocyanate biuret 4035-89-6 5.7E+05 nm 2.4E+06 nm 4.2E-01 n 1.8E+00 n 4.00E-04 C 1 0.1 Hexamethylene diisocyanate isocyanurate 3779-63-3 5.7E+05 nm 2.4E+06 nm 4.2E-01 n 1.8E+00 n 4.00E-04 P 1 0.1 Hexamethylphosphoramide 680-31-9 2.5E+01 n 3.3E+02 n 8.0E+00 n 1.8E-03 n 2.00E-07 X 6.00E-01 P V 1 1.41E+02 Hexane, Commercial E5241997 1.2E+01 c*5.1E+01 c*1.4E+01 c*6.1E+01 c*2.8E+01 c*2.0E-01 c* 7.00E-01 I V 1 1.41E+02 Hexane, N-110-54-3 6.1E+02 ns 2.5E+03 ns 7.3E+02 n 3.1E+03 n 1.5E+03 n 1.0E+01 n 2.00E+00 P 1 0.1 Hexanedioic Acid 124-04-9 1.3E+05 nm 1.6E+06 nm 4.0E+04 n 9.9E+00 n 9.50E-03 P 7.00E-02 P 4.00E-04 P V 1 2.74E+02 Hexanol, 1-,2-ethyl- (2-Ethyl-1-hexanol)104-76-7 1.5E+01 n 6.3E+01 n 4.2E-01 n 1.8E+00 n 8.3E-01 n 2.3E-04 n 5.00E-03 I 3.00E-02 I V 1 3.28E+03 Hexanone, 2-591-78-6 2.0E+02 n 1.3E+03 n 3.1E+01 n 1.3E+02 n 3.8E+01 n 8.8E-03 n 3.30E-02 I 1 0.1 Hexazinone 51235-04-2 2.1E+03 n 2.7E+04 n 6.4E+02 n 3.0E-01 n 2.50E-02 I 1 0.1 Hexythiazox 78587-05-0 1.6E+03 n 2.1E+04 n 1.1E+02 n 5.0E-01 n Page 5 of 12 Regional Screening Level (RSL) Summary Table (TR=1E-06, HQ=1) November 2024 SFO (mg/kg-day)-1 k e y IUR (ug/m3)-1 k e y RfDo (mg/kg-day) k e y RfCi (mg/m3) k e y v o l mutagen GIABS ABSd Csat (mg/kg) Analyte CAS No. Resident Soil (mg/kg) k e y Industrial Soil (mg/kg) k e y Resident Air (ug/m3) k e y Industrial Air (ug/m3) k e y Tap Water (ug/L) k e y MCL (ug/L) Risk-based SSL (mg/kg) k e y MCL-based SSL (mg/kg) Key: I = IRIS; P = PPRTV; O = OPP; A = ATSDR; T = ATSDR DRAFT; C = Cal EPA; X = PPRTV Screening Level; H = HEAST; D = OW; R = ORD; N = WI; W = TEF applied; E = RPF applied; G = see user's guide; c = cancer; n = noncancer; * = where: nc SL < 100X ca SL; ** = where nc SL < 10X ca SL; SSL values are based on DAF=1; m = ceiling limit exceeded; s = Csat exceeded; V = volatile; M = mutagen. Toxicity and Chemical-specific Information Contaminant Screening Levels Protection of Groundwater 1.70E-02 O 1 0.1 Hydramethylnon 67485-29-4 1.1E+03 n 1.4E+04 n 3.4E+02 n 1.2E+05 n 3.00E+00 I 4.90E-03 I 3.00E-05 P V 1 1.12E+05 Hydrazine 302-01-2 3.2E-02 c*1.4E-01 c*5.7E-04 c*2.5E-03 c*1.1E-03 c*2.2E-07 c* 3.00E+00 I 4.90E-03 I 1 Hydrazine Sulfate 10034-93-2 2.3E-01 c 1.1E+00 c 5.7E-04 c 2.5E-03 c 2.6E-02 c 2.00E-02 I V 1 Hydrogen Chloride 7647-01-0 2.8E+07 nm 1.2E+08 nm 2.1E+01 n 8.8E+01 n 4.2E+01 n 4.00E-02 C 1.40E-02 C V 1 Hydrogen Fluoride 7664-39-3 3.1E+03 n 4.7E+04 n 1.5E+01 n 6.1E+01 n 2.8E+01 n 2.00E-03 I V 1 Hydrogen Sulfide 7783-06-4 2.8E+06 nm 1.2E+07 nm 2.1E+00 n 8.8E+00 n 4.2E+00 n 6.00E-02 P 4.00E-02 P 1 0.1 Hydroquinone 123-31-9 9.0E+00 c 3.8E+01 c 1.3E+00 c 8.7E-04 c 6.11E-02 O 1.08E-01 O 1 0.1 Imazalil 35554-44-0 8.9E+00 c 3.8E+01 c 9.0E-01 c 1.5E-02 c 2.50E-01 I 1 0.1 Imazaquin 81335-37-7 1.6E+04 n 2.1E+05 nm 4.9E+03 n 2.4E+01 n 2.50E+00 O 1 0.1 Imazethapyr 81335-77-5 1.6E+05 nm 2.1E+06 nm 4.7E+04 n 4.1E+01 n 1.00E-02 A 1 Iodine 7553-56-2 7.8E+02 n 1.2E+04 n 2.0E+02 n 1.2E+01 n 4.00E-02 I 1 0.1 Iprodione 36734-19-7 2.5E+03 n 3.3E+04 n 7.4E+02 n 2.2E-01 n 7.00E-01 P 1 Iron 7439-89-6 5.5E+04 n 8.2E+05 nm 1.4E+04 n 3.5E+02 n 3.00E-01 I 4.00E-01 X V 1 1.00E+04 Isobutyl Alcohol 78-83-1 7.8E+03 n 4.3E+04 ns 4.2E+02 n 1.8E+03 n 7.3E+02 n 1.5E-01 n 9.50E-04 I 2.00E-01 I 2.00E+00 C 1 0.1 Isophorone 78-59-1 5.7E+02 c*2.4E+03 c*2.1E+03 n 8.8E+03 n 7.8E+01 c*2.6E-02 c* 1.50E-02 I V 1 Isopropalin 33820-53-0 1.2E+03 n 1.8E+04 n 4.0E+01 n 9.2E-01 n 2.00E+00 P 2.00E-01 P V 1 1.09E+05 Isopropanol 67-63-0 5.6E+03 n 2.4E+04 n 2.1E+02 n 8.8E+02 n 4.1E+02 n 8.4E-02 n 1.00E-01 I 1 0.1 Isopropyl Methyl Phosphonic Acid 1832-54-8 6.3E+03 n 8.2E+04 n 2.0E+03 n 4.3E-01 n 4.00E-03 X 4.00E-02 X V 1 1.62E+02 Dichloropropene 99-87-6 1.7E+02 ns 1.1E+03 ns 4.2E+01 n 1.8E+02 n 2.1E+01 n 5.2E-02 n 5.00E-02 I 1 0.1 Isoxaben 82558-50-7 3.2E+03 n 4.1E+04 n 7.3E+02 n 2.0E+00 n 3.00E-01 A V 1 Jet propulsion fuel 7 (JP-7)E1737665 4.3E+08 nm 1.8E+09 nm 3.1E+02 n 1.3E+03 n 6.3E+02 n 8.00E-03 O 1 0.1 Lactofen 77501-63-4 5.1E+02 n 6.6E+03 n 1.0E+02 n 4.6E+00 n 2.00E-04 X 1 0.1 Lactonitrile 78-97-7 1.3E+01 n 1.6E+02 n 4.0E+00 n 8.1E-04 n 5.00E-05 P 1 Lanthanum 7439-91-0 3.9E+00 n 5.8E+01 n 1.0E+00 n 2.08E-05 P 1 0.1 Lanthanum Acetate Hydrate 100587-90-4 1.3E+00 n 1.7E+01 n 4.2E-01 n 1.87E-05 P 1 Lanthanum Chloride Heptahydrate 10025-84-0 1.5E+00 n 2.2E+01 n 3.7E-01 n 2.83E-05 P 1 Lanthanum Chloride, Anhydrous 10099-58-8 2.2E+00 n 3.3E+01 n 5.7E-01 n 1.60E-05 P 1 Lanthanum Nitrate Hexahydrate 10277-43-7 1.3E+00 n 1.9E+01 n 3.2E-01 n Lead Compounds 8.50E-03 C 1.20E-05 C 1 ~Lead Phosphate 7446-27-7 8.2E+01 c 3.8E+02 c 2.3E-01 c 1.0E+00 c 9.1E+00 c 2.10E-01 C 8.00E-05 C 1 0.1 ~Lead acetate 301-04-2 2.6E+00 c 1.1E+01 c 3.5E-02 c 1.5E-01 c 3.7E-01 c 7.5E-05 c 1 ~Lead and Compounds 7439-92-1 2.0E+02 G 8.0E+02 G 1.5E-01 G 1.0E+01 G 1.0E+01 9.0E+00 1 ~Lead and Compounds (with other sources of lead present, see Guidance)7439-92-1 1.0E+02 G 3.80E-02 C 1.10E-05 C 1 0.1 ~Lead subacetate 1335-32-6 1.4E+01 c 6.0E+01 c 2.6E-01 c 1.1E+00 c 2.1E+00 c 4.5E-04 c 1.00E-07 I V 1 2.43E+00 ~Tetraethyl Lead 78-00-2 7.8E-03 n 1.2E-01 n 1.3E-03 n 4.7E-06 n 5.00E-06 P V 1 3.83E+02 Lewisite 541-25-3 3.9E-01 n 5.8E+00 n 9.0E-02 n 3.8E-05 n 7.70E-03 O 1 0.1 Linuron 330-55-2 4.9E+02 n 6.3E+03 n 1.3E+02 n 1.1E-01 n 2.00E-03 P 1 Lithium 7439-93-2 1.6E+02 n 2.3E+03 n 4.0E+01 n 1.2E+01 n 5.00E-04 I 1 0.1 MCPA 94-74-6 3.2E+01 n 4.1E+02 n 7.5E+00 n 2.0E-03 n 4.40E-02 O 1 0.1 MCPB 94-81-5 2.8E+03 n 3.6E+04 n 6.5E+02 n 2.6E-01 n 1.00E-03 I 1 0.1 MCPP 93-65-2 6.3E+01 n 8.2E+02 n 1.6E+01 n 4.7E-03 n 2.00E-02 I 1 0.1 Malathion 121-75-5 1.3E+03 n 1.6E+04 n 3.9E+02 n 1.0E-01 n 1.00E-01 I 7.00E-04 C 1 0.1 Maleic Anhydride 108-31-6 6.3E+03 n 8.0E+04 n 7.3E-01 n 3.1E+00 n 1.9E+03 n 3.8E-01 n 5.00E-01 I 1 0.1 Maleic Hydrazide 123-33-1 3.2E+04 n 4.1E+05 nm 1.0E+04 n 2.1E+00 n 1.00E-04 P 1 0.1 Malononitrile 109-77-3 6.3E+00 n 8.2E+01 n 2.0E+00 n 4.1E-04 n 3.00E-02 H 1 0.1 Mancozeb 8018-01-7 1.9E+03 n 2.5E+04 n 5.4E+02 n 7.6E-01 n 5.00E-03 I 1 0.1 Maneb 12427-38-2 3.2E+02 n 4.1E+03 n 9.8E+01 n 1.4E-01 n 1.40E-01 I 5.00E-05 I 1 Manganese (Diet)7439-96-5 5.2E-02 n 2.2E-01 n 2.40E-02 G 5.00E-05 I 0.04 Manganese (Non-diet)7439-96-5 1.8E+03 n 2.6E+04 n 5.2E-02 n 2.2E-01 n 4.3E+02 n 2.8E+01 n 9.00E-05 H 1 0.1 Mephosfolan 950-10-7 5.7E+00 n 7.4E+01 n 1.8E+00 n 2.6E-03 n 3.00E-02 I 1 0.1 Mepiquat Chloride 24307-26-4 1.9E+03 n 2.5E+04 n 6.0E+02 n 2.0E-01 n 1.10E-02 P 4.00E-03 P 1 0.1 Mercaptobenzothiazole, 2-149-30-4 4.9E+01 c**2.1E+02 c*6.3E+00 c*1.8E-02 c* Mercury Compounds 3.00E-04 I 3.00E-04 G 0.07 ~Mercuric Chloride (and other Mercury salts)7487-94-7 2.3E+01 n 3.5E+02 n 3.1E-01 n 1.3E+00 n 5.7E+00 n 2.0E+00 3.00E-04 I V 1 3.13E+00 ~Mercury (elemental)7439-97-6 7.1E+00 ns 3.0E+01 ns 3.1E-01 n 1.3E+00 n 6.3E-01 n 2.0E+00 3.3E-02 n 1.0E-01 1.00E-04 I 1 ~Methyl Mercury 22967-92-6 7.8E+00 n 1.2E+02 n 2.0E+00 n 1.4E+01 n 8.00E-05 I 1 0.1 ~Phenylmercuric Acetate 62-38-4 5.1E+00 n 6.6E+01 n 1.6E+00 n 5.0E-04 n 3.00E-05 I V 1 Merphos 150-50-5 2.3E+00 n 3.5E+01 n 6.0E-01 n 5.9E-02 n 6.00E-02 I 1 0.1 Metalaxyl 57837-19-1 3.8E+03 n 4.9E+04 n 1.2E+03 n 3.3E-01 n 1.00E-04 I 3.00E-02 P V 1 4.58E+03 Methacrylonitrile 126-98-7 7.5E+00 n 1.0E+02 n 3.1E+01 n 1.3E+02 n 1.9E+00 n 4.3E-04 n 5.00E-05 I 1 0.1 Methamidophos 10265-92-6 3.2E+00 n 4.1E+01 n 1.0E+00 n 2.1E-04 n 2.00E+00 I 2.00E+01 I V 1 1.06E+05 Methanol 67-56-1 1.2E+05 nms 1.2E+06 nms 2.1E+04 n 8.8E+04 n 2.0E+04 n 4.1E+00 n 1.50E-03 O 1 0.1 Methidathion 950-37-8 9.5E+01 n 1.2E+03 n 2.9E+01 n 7.1E-03 n 2.50E-02 I 1 0.1 Methomyl 16752-77-5 1.6E+03 n 2.1E+04 n 5.0E+02 n 1.1E-01 n 4.90E-02 C 1 0.1 Methoxy-5-nitroaniline, 2-99-59-2 1.1E+01 c 4.7E+01 c 1.5E+00 c 5.3E-04 c 5.00E-03 I 1 0.1 Methoxychlor 72-43-5 3.2E+02 n 4.1E+03 n 3.7E+01 n 4.0E+01 2.0E+00 n 2.2E+00 8.00E-03 P 1.00E-03 P V 1 1.15E+05 Methoxyethanol Acetate, 2-110-49-6 1.1E+02 n 5.1E+02 n 1.0E+00 n 4.4E+00 n 2.1E+00 n 4.2E-04 n 5.00E-03 P 7.00E-03 P V 1 1.06E+05 Methoxyethanol, 2-109-86-4 2.6E+02 n 2.0E+03 n 7.3E+00 n 3.1E+01 n 1.3E+01 n 2.6E-03 n 1.00E+00 X V 1 2.90E+04 Methyl Acetate 79-20-9 7.8E+04 ns 1.2E+06 nms 2.0E+04 n 4.1E+00 n 2.00E-02 P V 1 6.75E+03 Methyl Acrylate 96-33-3 1.5E+02 n 6.1E+02 n 2.1E+01 n 8.8E+01 n 4.2E+01 n 8.9E-03 n 6.00E-01 I 5.00E+00 I V 1 2.84E+04 Methyl Ethyl Ketone (2-Butanone)78-93-3 2.7E+04 n 1.9E+05 nms 5.2E+03 n 2.2E+04 n 5.6E+03 n 1.2E+00 n 1.00E-03 X 1.00E-03 P 2.00E-05 X V 1 1.80E+05 Methyl Hydrazine 60-34-4 1.4E-01 c**6.2E-01 c**2.8E-03 c**1.2E-02 c**5.6E-03 c**1.3E-06 c** 3.00E+00 I V 1 3.36E+03 Methyl Isobutyl Ketone (4-methyl-2-pentanone)108-10-1 3.3E+04 ns 1.4E+05 nms 3.1E+03 n 1.3E+04 n 6.3E+03 n 1.4E+00 n 1.00E-03 C V 1 1.01E+04 Methyl Isocyanate 624-83-9 4.6E+00 n 1.9E+01 n 1.0E+00 n 4.4E+00 n 2.1E+00 n 5.9E-04 n 1.40E+00 I 7.00E-01 I V 1 2.36E+03 Methyl Methacrylate 80-62-6 4.4E+03 ns 1.9E+04 ns 7.3E+02 n 3.1E+03 n 1.4E+03 n 3.0E-01 n 2.50E-04 I 1 0.1 Methyl Parathion 298-00-0 1.6E+01 n 2.1E+02 n 4.5E+00 n 7.4E-03 n 6.00E-02 X 1 0.1 Methyl Phosphonic Acid 993-13-5 3.8E+03 n 4.9E+04 n 1.2E+03 n 2.4E-01 n 6.00E-03 H 4.00E-02 H V 1 3.93E+02 Methyl Styrene (Mixed Isomers)25013-15-4 3.2E+02 n 2.6E+03 ns 4.2E+01 n 1.8E+02 n 2.3E+01 n 3.8E-02 n Page 6 of 12 Regional Screening Level (RSL) Summary Table (TR=1E-06, HQ=1) November 2024 SFO (mg/kg-day)-1 k e y IUR (ug/m3)-1 k e y RfDo (mg/kg-day) k e y RfCi (mg/m3) k e y v o l mutagen GIABS ABSd Csat (mg/kg) Analyte CAS No. Resident Soil (mg/kg) k e y Industrial Soil (mg/kg) k e y Resident Air (ug/m3) k e y Industrial Air (ug/m3) k e y Tap Water (ug/L) k e y MCL (ug/L) Risk-based SSL (mg/kg) k e y MCL-based SSL (mg/kg) Key: I = IRIS; P = PPRTV; O = OPP; A = ATSDR; T = ATSDR DRAFT; C = Cal EPA; X = PPRTV Screening Level; H = HEAST; D = OW; R = ORD; N = WI; W = TEF applied; E = RPF applied; G = see user's guide; c = cancer; n = noncancer; * = where: nc SL < 100X ca SL; ** = where nc SL < 10X ca SL; SSL values are based on DAF=1; m = ceiling limit exceeded; s = Csat exceeded; V = volatile; M = mutagen. Toxicity and Chemical-specific Information Contaminant Screening Levels Protection of Groundwater 9.90E-02 C 2.80E-05 C 1 0.1 Methyl methanesulfonate 66-27-3 5.5E+00 c 2.3E+01 c 1.0E-01 c 4.4E-01 c 7.9E-01 c 1.6E-04 c 1.80E-03 C 2.60E-07 C 3.00E+00 I V 1 8.87E+03 Methyl tert-Butyl Ether (MTBE)1634-04-4 4.7E+01 c 2.1E+02 c 1.1E+01 c 4.7E+01 c 1.4E+01 c 3.2E-03 c 3.00E-04 X 1 0.1 Methyl-1,4-benzenediamine dihydrochloride, 2-615-45-2 1.9E+01 n 2.5E+02 n 6.0E+00 n 3.6E-03 n 3.00E+00 X V 1 2.45E+03 Methyl-2-Pentanol, 4-108-11-2 5.4E+04 ns 2.3E+05 nms 3.1E+03 n 1.3E+04 n 6.3E+03 n 1.4E+00 n 9.00E-03 P 2.00E-02 X 1 0.1 Methyl-5-Nitroaniline, 2-99-55-8 6.0E+01 c*2.6E+02 c*8.2E+00 c*4.6E-03 c* 8.30E+00 C 2.40E-03 C 1 0.1 Methyl-N-nitro-N-nitrosoguanidine, N-70-25-7 6.5E-02 c 2.8E-01 c 1.2E-03 c 5.1E-03 c 9.4E-03 c 3.2E-06 c 1.30E-01 C 3.70E-05 C 1 0.1 Methylaniline Hydrochloride, 2-636-21-5 4.2E+00 c 1.8E+01 c 7.6E-02 c 3.3E-01 c 6.0E-01 c 2.6E-04 c 1.00E-02 A 1 0.1 Methylarsonic acid 124-58-3 6.3E+02 n 8.2E+03 n 2.0E+02 n 5.8E-02 n 2.00E-04 X 1 0.1 Methylbenzene,1-4-diamine monohydrochloride, 2-74612-12-7 1.3E+01 n 1.6E+02 n 4.0E+00 n 1.00E-01 X 3.00E-04 X 1 0.1 Methylbenzene-1,4-diamine sulfate, 2-615-50-9 5.4E+00 c**2.3E+01 c*7.8E-01 c** 2.20E+01 C 6.30E-03 C M 1 0.1 Methylcholanthrene, 3-56-49-5 5.5E-03 c 1.0E-01 c 1.6E-04 c 1.9E-03 c 1.1E-03 c 2.2E-03 c 9.50E-02 X V 1 6.76E+01 Methylcyclohexane 108-87-2 9.8E+01 ns 4.1E+02 ns 9.9E+01 n 4.2E+02 n 2.0E+02 n 4.4E-01 n 2.00E-03 I 1.00E-08 I 6.00E-03 I 6.00E-01 I V M 1 3.32E+03 Methylene Chloride 75-09-2 5.7E+01 c**1.0E+03 c**1.0E+02 c**1.2E+03 c**1.1E+01 c**5.0E+00 2.9E-03 c**1.3E-03 1.00E-01 P 4.30E-04 C 2.00E-03 P M 1 0.1 Methylene-bis(2-chloroaniline), 4,4'-101-14-4 1.2E+00 c 2.3E+01 c*2.4E-03 c 2.9E-02 c 1.6E-01 c 1.8E-03 c 4.60E-02 I 1.30E-05 C 1 0.1 Methylene-bis(N,N-dimethyl) Aniline, 4,4'-101-61-1 1.2E+01 c 5.0E+01 c 2.2E-01 c 9.4E-01 c 7.0E-01 c 3.9E-03 c 1.60E+00 C 4.60E-04 C 2.00E-02 C 1 0.1 Methylenebisbenzenamine, 4,4'-101-77-9 3.4E-01 c 1.4E+00 c 6.1E-03 c 2.7E-02 c 4.7E-02 c 2.1E-04 c 6.00E-04 I 1 0.1 Methylenediphenyl Diisocyanate 101-68-8 8.5E+05 nm 3.6E+06 nm 6.3E-01 n 2.6E+00 n 7.00E-02 H V 1 5.00E+02 Methylstyrene, Alpha-98-83-9 5.5E+03 ns 8.2E+04 ns 7.8E+02 n 1.2E+00 n 1.50E-01 I 1 0.1 Metolachlor 51218-45-2 9.5E+03 n 1.2E+05 nm 2.7E+03 n 3.2E+00 n 2.50E-02 I 1 0.1 Metribuzin 21087-64-9 1.6E+03 n 2.1E+04 n 4.9E+02 n 1.5E-01 n 2.50E-01 I 1 0.1 Metsulfuron-methyl 74223-64-6 1.6E+04 n 2.1E+05 nm 4.9E+03 n 1.9E+00 n 4.50E-06 X 1.00E-02 X 1.00E-01 P V 1 6.86E+00 Midrange Aliphatic Hydrocarbon Streams E1790669 6.5E-01 c 2.8E+00 c 6.2E-01 c 2.7E+00 c 1.2E+00 c*1.8E-02 c* 3.00E+00 P V 1 3.42E-01 Mineral oils 8012-95-1 2.3E+05 nms 3.5E+06 nms 6.0E+04 n 2.4E+03 n 1.80E+01 C 5.10E-03 C 2.00E-04 I V 1 Mirex 2385-85-5 3.6E-02 c 1.7E-01 c 5.5E-04 c 2.4E-03 c 8.8E-04 c 6.3E-04 c 2.00E-03 I 1 0.1 Molinate 2212-67-1 1.3E+02 n 1.6E+03 n 3.0E+01 n 1.7E-02 n 5.00E-03 I 2.00E-03 A 1 Molybdenum 7439-98-7 3.9E+02 n 5.8E+03 n 2.1E+00 n 8.8E+00 n 1.0E+02 n 2.0E+00 n 1.00E-01 I 1 Monochloramine 10599-90-3 7.8E+03 n 1.2E+05 nm 2.0E+03 n 4.0E+03(G) 2.00E-03 P 1 0.1 Monomethylaniline 100-61-8 1.3E+02 n 1.6E+03 n 3.8E+01 n 1.4E-02 n 2.50E-02 I 1 0.1 Myclobutanil 88671-89-0 1.6E+03 n 2.1E+04 n 4.5E+02 n 5.6E+00 n 3.00E-04 X 1 0.1 N,N'-Diphenyl-1,4-benzenediamine 74-31-7 1.9E+01 n 2.5E+02 n 3.6E+00 n 3.7E-01 n 2.00E-03 I V 1 Naled 300-76-5 1.6E+02 n 2.3E+03 n 4.0E+01 n 1.8E-02 n 3.00E-02 X 1.00E-01 P V 1 Naphtha, High Flash Aromatic (HFAN)64742-95-6 2.3E+03 n 3.5E+04 n 1.0E+02 n 4.4E+02 n 1.5E+02 n 1.80E+00 C 0.00E+00 C 1 0.1 Naphthylamine, 2-91-59-8 3.0E-01 c 1.3E+00 c 3.9E-02 c 2.0E-04 c 1.20E-01 O 1 0.1 Napropamide 15299-99-7 7.6E+03 n 9.8E+04 n 2.0E+03 n 1.3E+01 n 2.60E-04 C 1.10E-02 C 1.40E-05 C 1 0.1 Nickel Acetate 373-02-4 6.7E+02 n 8.1E+03 n 1.1E-02 c**4.7E-02 c**2.2E+02 n 4.5E-02 n 2.60E-04 C 1.10E-02 C 1.40E-05 C 1 0.1 Nickel Carbonate 3333-67-3 6.7E+02 n 8.1E+03 n 1.1E-02 c**4.7E-02 c**2.2E+02 n 2.60E-04 C 1.10E-02 C 1.40E-05 C V 1 Nickel Carbonyl 13463-39-3 8.2E+02 n 1.1E+04 n 1.1E-02 c**4.7E-02 c**2.2E-02 c** 2.60E-04 C 1.10E-02 C 1.40E-05 C 0.04 Nickel Hydroxide 12054-48-7 8.2E+02 n 1.1E+04 n 1.1E-02 c**4.7E-02 c**2.0E+02 n 2.60E-04 C 1.10E-02 C 2.00E-05 C 0.04 Nickel Oxide 1313-99-1 8.4E+02 n 1.2E+04 n 1.1E-02 c**4.7E-02 c**2.0E+02 n 2.40E-04 I 1.10E-02 C 1.40E-05 C 0.04 Nickel Refinery Dust E715532 8.2E+02 n 1.1E+04 n 1.2E-02 c**5.1E-02 c**2.2E+02 n 3.2E+01 n 2.60E-04 C 2.00E-02 I 1.00E-05 T 0.04 Nickel Soluble Salts 7440-02-0 1.4E+03 n 1.7E+04 n 1.0E-02 n 4.4E-02 n 3.9E+02 n 2.6E+01 n 1.70E+00 C 4.80E-04 I 1.10E-02 C 1.40E-05 C 0.04 Nickel Subsulfide 12035-72-2 4.1E-01 c 1.9E+00 c 5.8E-03 c**2.6E-02 c**4.5E-02 c 9.10E-01 C 2.60E-04 C 1.10E-02 C 1.40E-05 C 1 0.1 Nickelocene 1271-28-9 6.0E-01 c 2.5E+00 c 1.1E-02 c**4.7E-02 c**8.6E-02 c 1.60E+00 I 1 Nitrate (measured as nitrogen)14797-55-8 1.3E+05 nm 1.9E+06 nm 3.2E+04 n 1.0E+04 1 Nitrate + Nitrite (measured as nitrogen)E701177 1.0E+04 1.00E-01 I 1 Nitrite (measured as nitrogen)14797-65-0 7.8E+03 n 1.2E+05 nm 2.0E+03 n 1.0E+03 1.00E-02 X 5.00E-05 X 1 0.1 Nitroaniline, 2-88-74-4 6.3E+02 n 8.0E+03 n 5.2E-02 n 2.2E-01 n 1.9E+02 n 8.0E-02 n 2.00E-02 P 4.00E-03 P 6.00E-03 P 1 0.1 Nitroaniline, 4-100-01-6 2.7E+01 c**1.1E+02 c*6.3E+00 n 2.6E+01 n 3.8E+00 c*1.6E-03 c* 4.00E-05 I 2.00E-03 I 9.00E-03 I V 1 3.05E+03 Nitrobenzene 98-95-3 5.1E+00 c*2.2E+01 c*7.0E-02 c 3.1E-01 c 1.4E-01 c*9.2E-05 c* 3.00E+03 P 1 0.1 Nitrocellulose 9004-70-0 1.9E+08 nm 2.5E+09 nm 6.0E+07 n 1.3E+04 n 7.00E-02 H 1 0.1 Nitrofurantoin 67-20-9 4.4E+03 n 5.7E+04 n 1.4E+03 n 6.1E-01 n 1.30E+00 C 3.70E-04 C 1 0.1 Nitrofurazone 59-87-0 4.2E-01 c 1.8E+00 c 7.6E-03 c 3.3E-02 c 6.0E-02 c 5.4E-05 c 1.70E-02 P 1.00E-04 P 1 0.1 Nitroglycerin 55-63-0 6.3E+00 n 8.2E+01 n 2.0E+00 n 8.5E-04 n 1.00E-01 I 1 0.1 Nitroguanidine 556-88-7 6.3E+03 n 8.2E+04 n 2.0E+03 n 4.8E-01 n 8.80E-06 P 5.00E-03 P V 1 1.80E+04 Nitromethane 75-52-5 5.4E+00 c*2.4E+01 c*3.2E-01 c*1.4E+00 c*6.4E-01 c*1.4E-04 c* 5.80E-04 X 2.00E-02 I V 1 4.86E+03 Nitropropane, 2-79-46-9 6.4E-02 c 2.8E-01 c 4.8E-03 c 2.1E-02 c 9.7E-03 c 2.5E-06 c 2.70E+01 C 7.70E-03 C M 1 0.1 Nitroso-N-ethylurea, N-759-73-9 4.5E-03 c 8.5E-02 c 1.3E-04 c 1.6E-03 c 9.2E-04 c 2.2E-07 c 1.20E+02 C 3.40E-02 C M 1 0.1 Nitroso-N-methylurea, N-684-93-5 1.0E-03 c 1.9E-02 c 3.0E-05 c 3.6E-04 c 2.1E-04 c 4.6E-08 c 5.40E+00 I 1.60E-03 I V 1 Nitrosodibutylamine, N-924-16-3 9.9E-02 c 4.6E-01 c 1.8E-03 c 7.7E-03 c 2.7E-03 c 5.5E-06 c 2.80E+00 I 8.00E-04 C 1 0.1 Nitrosodiethanolamine, N-1116-54-7 1.9E-01 c 8.2E-01 c 3.5E-03 c 1.5E-02 c 2.8E-02 c 5.6E-06 c 1.50E+02 I 4.30E-02 I M 1 0.1 Nitrosodiethylamine, N-55-18-5 8.1E-04 c 1.5E-02 c 2.4E-05 c 2.9E-04 c 1.7E-04 c 6.1E-08 c 5.10E+01 I 1.40E-02 I 8.00E-06 P 4.00E-05 X V M 1 2.37E+05 Nitrosodimethylamine, N-62-75-9 2.0E-03 c 3.4E-02 c 7.2E-05 c 8.8E-04 c 1.1E-04 c 2.7E-08 c 4.90E-03 I 2.60E-06 C 1 0.1 Nitrosodiphenylamine, N-86-30-6 1.1E+02 c 4.7E+02 c 1.1E+00 c 4.7E+00 c 1.2E+01 c 6.7E-02 c 7.00E+00 I 2.00E-03 C 1 0.1 Nitrosodipropylamine, N-621-64-7 7.8E-02 c 3.3E-01 c 1.4E-03 c 6.1E-03 c 1.1E-02 c 8.1E-06 c 2.20E+01 I 6.30E-03 C V 1 1.08E+05 Nitrosomethylethylamine, N-10595-95-6 2.0E-02 c 9.1E-02 c 4.5E-04 c 1.9E-03 c 7.1E-04 c 2.0E-07 c 6.70E+00 C 1.90E-03 C 1 0.1 Nitrosomorpholine [N-]59-89-2 8.1E-02 c 3.4E-01 c 1.5E-03 c 6.5E-03 c 1.2E-02 c 2.8E-06 c 9.40E+00 C 2.70E-03 C 1 0.1 Nitrosopiperidine [N-]100-75-4 5.8E-02 c 2.4E-01 c 1.0E-03 c 4.5E-03 c 8.2E-03 c 4.4E-06 c 2.10E+00 I 6.10E-04 I 1 0.1 Nitrosopyrrolidine, N-930-55-2 2.6E-01 c 1.1E+00 c 4.6E-03 c 2.0E-02 c 3.7E-02 c 1.4E-05 c 1.00E-04 X 1 0.1 Nitrotoluene, m-99-08-1 6.3E+00 n 8.2E+01 n 1.7E+00 n 1.6E-03 n 2.20E-01 P 9.00E-04 P V 1 1.51E+03 Nitrotoluene, o-88-72-2 3.2E+00 c*1.5E+01 c*3.1E-01 c*3.0E-04 c* 1.60E-02 P 4.00E-03 P 1 0.1 Nitrotoluene, p-99-99-0 3.4E+01 c**1.4E+02 c*4.3E+00 c*4.0E-03 c* 3.00E-04 X 2.00E-02 P V 1 6.86E+00 Nonane, n-111-84-2 1.1E+01 ns 7.2E+01 ns 2.1E+01 n 8.8E+01 n 5.3E+00 n 7.5E-02 n 1.50E-03 O 1 0.1 Norflurazon 27314-13-2 9.5E+01 n 1.2E+03 n 2.9E+01 n 1.9E-01 n 3.00E-03 I 1 0.1 Octabromodiphenyl Ether 32536-52-0 1.9E+02 n 2.5E+03 n 6.0E+01 n 1.2E+01 n 5.00E-02 I 1 0.006 Octahydro-1,3,5,7-tetranitro-1,3,5,7-tetrazocine (HMX)2691-41-0 3.9E+03 n 5.7E+04 n 1.0E+03 n 1.3E+00 n 2.00E-03 H 1 0.1 Octamethylpyrophosphoramide 152-16-9 1.3E+02 n 1.6E+03 n 4.0E+01 n 9.6E-03 n 7.79E-03 O 1.90E-01 O 1 0.1 Oryzalin 19044-88-3 7.0E+01 c 2.9E+02 c 7.9E+00 c 1.5E-02 c 5.00E-03 I 1 0.1 Oxadiazon 19666-30-9 3.2E+02 n 4.1E+03 n 4.7E+01 n 4.8E-01 n Page 7 of 12 Regional Screening Level (RSL) Summary Table (TR=1E-06, HQ=1) November 2024 SFO (mg/kg-day)-1 k e y IUR (ug/m3)-1 k e y RfDo (mg/kg-day) k e y RfCi (mg/m3) k e y v o l mutagen GIABS ABSd Csat (mg/kg) Analyte CAS No. Resident Soil (mg/kg) k e y Industrial Soil (mg/kg) k e y Resident Air (ug/m3) k e y Industrial Air (ug/m3) k e y Tap Water (ug/L) k e y MCL (ug/L) Risk-based SSL (mg/kg) k e y MCL-based SSL (mg/kg) Key: I = IRIS; P = PPRTV; O = OPP; A = ATSDR; T = ATSDR DRAFT; C = Cal EPA; X = PPRTV Screening Level; H = HEAST; D = OW; R = ORD; N = WI; W = TEF applied; E = RPF applied; G = see user's guide; c = cancer; n = noncancer; * = where: nc SL < 100X ca SL; ** = where nc SL < 10X ca SL; SSL values are based on DAF=1; m = ceiling limit exceeded; s = Csat exceeded; V = volatile; M = mutagen. Toxicity and Chemical-specific Information Contaminant Screening Levels Protection of Groundwater 2.50E-02 I 1 0.1 Oxamyl 23135-22-0 1.6E+03 n 2.1E+04 n 5.0E+02 n 2.0E+02 1.1E-01 n 4.4E-02 7.32E-02 O 4.00E-02 O 1 0.1 Oxyfluorfen 42874-03-3 7.4E+00 c 3.1E+01 c 5.4E-01 c 4.3E-02 c 1.30E-02 I 1 0.1 Paclobutrazol 76738-62-0 8.2E+02 n 1.1E+04 n 2.3E+02 n 4.6E-01 n 4.50E-03 I 1 0.1 Paraquat Dichloride 1910-42-5 2.8E+02 n 3.7E+03 n 9.0E+01 n 1.2E+00 n 6.00E-03 H 1 0.1 Parathion 56-38-2 3.8E+02 n 4.9E+03 n 8.6E+01 n 4.3E-01 n 5.00E-02 H V 1 Pebulate 1114-71-2 3.9E+03 n 5.8E+04 n 5.6E+02 n 4.5E-01 n 3.00E-01 O 1 0.1 Pendimethalin 40487-42-1 1.9E+04 n 2.5E+05 nm 1.4E+03 n 1.6E+01 n 2.00E-03 I V 1 3.12E-01 Pentabromodiphenyl Ether 32534-81-9 1.6E+02 ns 2.3E+03 ns 4.0E+01 n 1.7E+00 n 1.00E-04 I 1 0.1 Pentabromodiphenyl ether, 2,2',4,4',5- (BDE-99)60348-60-9 6.3E+00 n 8.2E+01 n 2.0E+00 n 8.7E-02 n 8.00E-04 I V 1 Pentachlorobenzene 608-93-5 6.3E+01 n 9.3E+02 n 3.2E+00 n 2.4E-02 n 9.00E-02 P V 1 4.57E+02 Pentachloroethane 76-01-7 7.7E+00 c 3.6E+01 c 6.5E-01 c 3.1E-04 c 2.60E-01 H 3.00E-03 I V 1 Pentachloronitrobenzene 82-68-8 2.7E+00 c*1.3E+01 c 1.2E-01 c 1.5E-03 c 4.00E-01 I 5.10E-06 C 5.00E-03 I 1 0.25 Pentachlorophenol 87-86-5 1.0E+00 c 4.0E+00 c 5.5E-01 c 2.4E+00 c 4.1E-02 c 1.0E+00 5.7E-05 c 1.4E-03 4.30E-03 X 9.00E-03 P 1 0.1 Pentaerythritol tetranitrate (PETN)78-11-5 1.3E+02 c**5.3E+02 c*1.7E+01 c**2.6E-02 c** 1.00E-04 X 1 0.1 Pentamethylphosphoramide (PMPA)10159-46-3 6.3E+00 n 8.2E+01 n 2.0E+00 n 4.1E-04 n 1.00E+00 P V 1 3.88E+02 Pentane, n-109-66-0 8.1E+02 ns 3.4E+03 ns 1.0E+03 n 4.4E+03 n 2.1E+03 n 1.0E+01 n Per- and Polyfluoroalkyl Substances (PFAS) 3.00E-06 D 1 0.1 ~Ammonium perfluoro-2-methyl-3-oxahexanoate 62037-80-3 1.9E-01 n 2.5E+00 n 2.1E-02 n 2.2E-05 n 1.00E-03 I V 1 2.68E+02 ~Ammonium perfluorobutanoate 10495-86-0 7.8E+01 n 1.2E+03 ns 1.9E+01 n 6.8E-03 n 2.07E-09 I 1 0.1 ~Ammonium perfluorodecanoate 3108-42-7 1.3E-04 n 1.7E-03 n 4.2E-05 n 4.1E-08 n 5.00E-04 I 1 0.1 ~Ammonium perfluorohexanoate 21615-47-4 3.2E+01 n 4.1E+02 n 7.2E+00 n 1.7E-03 n 2.93E+04 D 3.00E-08 D 1 0.1 ~Ammonium perfluorooctanoate 3825-26-1 1.9E-05 c 7.8E-05 c 2.7E-06 c 4.0E-08 c 3.00E-04 R V 1 ~Bis(trifluoromethylsulfonyl)amine (TFSI)82113-65-3 2.3E+01 n 3.5E+02 n 5.9E+00 n 1.9E-03 n 3.00E-06 D V 1 1.92E+06 ~Hexafluoropropylene oxide dimer acid (HFPO-DA)13252-13-6 2.3E-01 n 3.5E+00 n 1.5E-02 n 1.0E-02(G)1.5E-05 n 1.0E-05 3.00E-04 R V 1 ~Lithium bis[(trifluoromethyl)sulfonyl]azanide 90076-65-6 2.3E+01 n 3.5E+02 n 6.0E+00 n 1.9E-03 n 3.00E-06 D V 1 1.92E+06 ~Perfluoro(2-propoxypropanoate)122499-17-6 2.3E-01 n 3.5E+00 n 6.0E-02 n 1.0E-02(G)6.1E-05 n 1.0E-05 3.00E-04 P 1 0.1 ~Perfluorobutanesulfonate 45187-15-3 1.9E+01 n 2.5E+02 n 6.0E+00 n (G)3.0E-03 n 3.00E-04 P 1 0.1 ~Perfluorobutanesulfonic acid (PFBS)375-73-5 1.9E+01 n 2.5E+02 n 6.0E+00 n (G)3.0E-03 n 1.00E-03 I V 1 2.56E+03 ~Perfluorobutanoate 45048-62-2 7.8E+01 n 1.2E+03 n 1.8E+01 n 6.3E-03 n 1.00E-03 I V 1 2.57E+03 ~Perfluorobutanoic acid (PFBA)375-22-4 7.8E+01 n 1.2E+03 n 1.8E+01 n 6.5E-03 n 2.00E-09 I 1 0.1 ~Perfluorodecanoate 73829-36-4 1.3E-04 n 1.6E-03 n 4.0E-05 n 4.0E-08 n 2.00E-09 I 1 0.1 ~Perfluorodecanoic acid (PFDA)335-76-2 1.3E-04 n 1.6E-03 n 4.0E-05 n 8.1E-08 n 5.00E-05 N 1 0.1 ~Perfluorododecanoic acid (PFDoDA)307-55-1 3.2E+00 n 4.1E+01 n 1.0E+00 n 1.7E-01 n 2.00E-05 A 1 0.1 ~Perfluorohexanesulfonate 108427-53-8 1.3E+00 n 1.6E+01 n 3.9E-01 n 1.0E-02(G)1.7E-04 n 4.2E-06 2.00E-05 A 1 0.1 ~Perfluorohexanesulfonic acid (PFHxS)355-46-4 1.3E+00 n 1.6E+01 n 3.9E-01 n 1.0E-02(G)1.7E-04 n 4.2E-06 5.00E-04 I 1 0.1 ~Perfluorohexanoate 92612-52-7 3.2E+01 n 4.1E+02 n 6.1E+00 n 1.5E-03 n 5.00E-04 I 1 0.1 ~Perfluorohexanoic acid (PFHxA)307-24-4 3.2E+01 n 4.1E+02 n 9.9E+00 n 2.4E-03 n 3.00E-06 A 1 0.1 ~Perfluorononanoate 72007-68-2 1.9E-01 n 2.5E+00 n 5.9E-02 n 1.0E-02(G)2.5E-04 n 4.2E-05 3.00E-06 A 1 0.1 ~Perfluorononanoic acid (PFNA)375-95-1 1.9E-01 n 2.5E+00 n 5.9E-02 n 1.0E-02(G)2.5E-04 n 4.2E-05 4.00E-02 N 1 0.1 ~Perfluorooctadecanoic acid (PFODA)16517-11-6 2.5E+03 n 3.3E+04 n 8.0E+02 n 2.2E+02 n 3.95E+01 D 1.00E-07 D 1 0.1 ~Perfluorooctanesulfonate 45298-90-6 6.3E-03 n 5.8E-02 c**2.0E-03 c**4.0E-03 1.5E-05 c**3.0E-05 3.95E+01 D 1.00E-07 D 1 0.1 ~Perfluorooctanesulfonic acid (PFOS)1763-23-1 6.3E-03 n 5.8E-02 c**2.0E-03 c**4.0E-03 1.5E-05 c**3.0E-05 2.93E+04 D 3.00E-08 D 1 0.1 ~Perfluorooctanoate 45285-51-6 1.9E-05 c 7.8E-05 c 2.7E-06 c 4.0E-03 4.0E-08 c 6.1E-05 2.93E+04 D 3.00E-08 D 1 0.1 ~Perfluorooctanoic acid (PFOA)335-67-1 1.9E-05 c 7.8E-05 c 2.7E-06 c 4.0E-03 4.0E-08 c 6.1E-05 5.00E-04 R V 1 1.36E+04 ~Perfluoropropanoic acid (PFPrA)422-64-0 3.9E+01 n 5.8E+02 n 9.8E+00 n 2.1E-03 n 1.00E-03 N 1 0.1 ~Perfluorotetradecanoic acid (PFTetDA)376-06-7 6.3E+01 n 8.2E+02 n 2.0E+01 n 9.4E+00 n 3.00E-04 N 1 0.1 ~Perfluoroundecanoic acid (PFUDA)2058-94-8 1.9E+01 n 2.5E+02 n 6.0E+00 n 4.5E-02 n 3.00E-04 P 1 0.1 ~Potassium perfluorobutanesulfonate 29420-49-3 1.9E+01 n 2.5E+02 n 6.0E+00 n 3.0E-03 n 2.00E-03 I V 1 9.61E+04 ~Potassium perfluorobutanoate 2966-54-3 1.6E+02 n 2.3E+03 n 3.8E+01 n 1.3E-02 n 2.15E-09 I 1 0.1 ~Potassium perfluorodecanoate 51604-85-4 1.4E-04 n 1.8E-03 n 4.3E-05 n 4.3E-08 n 3.95E+01 D 1.00E-07 D 1 0.1 ~Potassium perfluorooctanesulfonate 2795-39-3 6.3E-03 n 5.8E-02 c**2.0E-03 c**1.5E-05 c** 1.00E-03 I V 1 8.99E+04 ~Sodium perfluorobutanoate 2218-54-4 7.8E+01 n 1.2E+03 n 1.8E+01 n 6.4E-03 n 2.09E-09 I 1 0.1 ~Sodium perfluorodecanoate 3830-45-3 1.3E-04 n 1.7E-03 n 4.2E-05 n 4.2E-08 n 5.00E-04 I 1 0.1 ~Sodium perfluorohexanoate 2923-26-4 3.2E+01 n 4.1E+02 n 1.0E+01 n 2.4E-03 n Perchlorates 7.00E-04 I 1 ~Ammonium Perchlorate 7790-98-9 5.5E+01 n 8.2E+02 n 1.4E+01 n 7.00E-04 I 1 ~Lithium Perchlorate 7791-03-9 5.5E+01 n 8.2E+02 n 1.4E+01 n 7.00E-04 I 1 ~Perchlorate and Perchlorate Salts 14797-73-0 5.5E+01 n 8.2E+02 n 1.4E+01 n 1.5E+01(G) 7.00E-04 I 1 ~Potassium Perchlorate 7778-74-7 5.5E+01 n 8.2E+02 n 1.4E+01 n 7.00E-04 I 1 ~Sodium Perchlorate 7601-89-0 5.5E+01 n 8.2E+02 n 1.4E+01 n 5.00E-02 I 1 0.1 Permethrin 52645-53-1 3.2E+03 n 4.1E+04 n 1.0E+03 n 2.4E+02 n 2.20E-03 C 6.30E-07 C 1 0.1 Phenacetin 62-44-2 2.5E+02 c 1.0E+03 c 4.5E+00 c 1.9E+01 c 3.4E+01 c 9.7E-03 c 2.40E-01 O 1 0.1 Phenmedipham 13684-63-4 1.5E+04 n 2.0E+05 nm 3.8E+03 n 2.1E+01 n 3.00E-01 I 2.00E-01 C 1 0.1 Phenol 108-95-2 1.9E+04 n 2.5E+05 nm 2.1E+02 n 8.8E+02 n 5.8E+03 n 3.3E+00 n 4.00E-03 I 1 0.1 Phenol, 2-(1-methylethoxy)-, methylcarbamate 114-26-1 2.5E+02 n 3.3E+03 n 7.8E+01 n 2.5E-02 n 5.00E-04 X 1 0.1 Phenothiazine 92-84-2 3.2E+01 n 4.1E+02 n 4.3E+00 n 1.4E-02 n 2.00E-04 X V 1 1.29E+02 Phenyl Isothiocyanate 103-72-0 1.6E+01 n 2.3E+02 ns 2.6E+00 n 1.7E-03 n 6.00E-03 I 1 0.1 Phenylenediamine, m-108-45-2 3.8E+02 n 4.9E+03 n 1.2E+02 n 3.2E-02 n 1.20E-01 P 4.00E-03 P M 1 0.1 Phenylenediamine, o-95-54-5 1.0E+00 c 1.9E+01 c 2.1E-01 c 5.6E-05 c 1.00E-03 X 1 0.1 Phenylenediamine, p-106-50-3 6.3E+01 n 8.2E+02 n 2.0E+01 n 5.4E-03 n 1.94E-03 H 1 0.1 Phenylphenol, 2-90-43-7 2.8E+02 c 1.2E+03 c 3.0E+01 c 4.1E-01 c 2.00E-04 H 1 0.1 Phorate 298-02-2 1.3E+01 n 1.6E+02 n 3.0E+00 n 3.4E-03 n 3.00E-04 I V 1 1.61E+03 Phosgene 75-44-5 3.1E-01 n 1.3E+00 n 3.1E-01 n 1.3E+00 n 6.3E-01 n 1.6E-04 n 2.00E-02 I 1 0.1 Phosmet 732-11-6 1.3E+03 n 1.6E+04 n 3.7E+02 n 8.2E-02 n Phosphates, Inorganic 2.93E+00 X 1 ~Aluminum metaphosphate 13776-88-0 2.3E+05 nm 3.4E+06 nm 5.9E+04 n 3.00E-01 X 1 ~Aluminum salts of inorganic phosphates E524680405 2.3E+04 n 3.5E+05 nm 6.0E+03 n 1.00E+00 P 1 ~Dipotassium phosphate 7758-11-4 7.8E+04 n 1.2E+06 nm 2.0E+04 n Page 8 of 12 Regional Screening Level (RSL) Summary Table (TR=1E-06, HQ=1) November 2024 SFO (mg/kg-day)-1 k e y IUR (ug/m3)-1 k e y RfDo (mg/kg-day) k e y RfCi (mg/m3) k e y v o l mutagen GIABS ABSd Csat (mg/kg) Analyte CAS No. Resident Soil (mg/kg) k e y Industrial Soil (mg/kg) k e y Resident Air (ug/m3) k e y Industrial Air (ug/m3) k e y Tap Water (ug/L) k e y MCL (ug/L) Risk-based SSL (mg/kg) k e y MCL-based SSL (mg/kg) Key: I = IRIS; P = PPRTV; O = OPP; A = ATSDR; T = ATSDR DRAFT; C = Cal EPA; X = PPRTV Screening Level; H = HEAST; D = OW; R = ORD; N = WI; W = TEF applied; E = RPF applied; G = see user's guide; c = cancer; n = noncancer; * = where: nc SL < 100X ca SL; ** = where nc SL < 10X ca SL; SSL values are based on DAF=1; m = ceiling limit exceeded; s = Csat exceeded; V = volatile; M = mutagen. Toxicity and Chemical-specific Information Contaminant Screening Levels Protection of Groundwater 1.00E+00 P 1 ~Disodium phosphate 7558-79-4 7.8E+04 n 1.2E+06 nm 2.0E+04 n 3.54E+00 X 1 ~Monoaluminum phosphate 13530-50-2 2.8E+05 nm 4.1E+06 nm 7.1E+04 n 1.00E+00 P 1 ~Monopotassium phosphate 7778-77-0 7.8E+04 n 1.2E+06 nm 2.0E+04 n 1.00E+00 P 1 ~Monosodium phosphate 7558-80-7 7.8E+04 n 1.2E+06 nm 2.0E+04 n 1.00E+00 P 1.00E-02 I 1 ~Phosphoric Acid 7664-38-2 7.8E+04 n 1.1E+06 nm 1.0E+01 n 4.4E+01 n 2.0E+04 n 1.36E+00 X 1 0.1 ~Phosphoric acid, aluminum salt (1:1) [aluminum phosphate]7784-30-7 8.6E+04 n 1.1E+06 nm 2.7E+04 n 4.26E+00 X 1 ~Phosphoric acid, aluminum sodium salt (1:X:X) [sodium aluminum phosphate acidic (acidic SALP)]7785-88-8 3.3E+05 nm 5.0E+06 nm 8.5E+04 n 1.00E+00 P 1 ~Polyphosphoric acid 8017-16-1 7.8E+04 n 1.2E+06 nm 2.0E+04 n 1.00E+00 P 1 ~Potassium salts of inorganic phosphates E524680403 7.8E+04 n 1.2E+06 nm 2.0E+04 n 1.00E+00 P 1 ~Potassium tripolyphosphate 13845-36-8 7.8E+04 n 1.2E+06 nm 2.0E+04 n 4.99E+00 X 1 ~Sodium aluminum phosphate (anhydrous)10279-59-1 3.9E+05 nm 5.8E+06 nm 1.0E+05 n 3.52E+00 X 1 ~Sodium aluminum phosphate (tetrahydrate)10305-76-7 2.8E+05 nm 4.1E+06 nm 7.0E+04 n 1.00E+00 P 1 ~Sodium hexametaphosphate 10124-56-8 7.8E+04 n 1.2E+06 nm 2.0E+04 n 1.00E+00 P 1 ~Sodium polyphosphate 68915-31-1 7.8E+04 n 1.2E+06 nm 2.0E+04 n 1.00E+00 P 1 ~Sodium pyrophosphate 7758-16-9 7.8E+04 n 1.2E+06 nm 2.0E+04 n 1.00E+00 P 1 ~Sodium salts of inorganic phosphates E524680404 7.8E+04 n 1.2E+06 nm 2.0E+04 n 1.00E+00 P 1 ~Sodium trimetaphosphate 7785-84-4 7.8E+04 n 1.2E+06 nm 2.0E+04 n 1.00E+00 P 1 ~Sodium tripolyphosphate 7758-29-4 7.8E+04 n 1.2E+06 nm 2.0E+04 n 1.00E+00 P 1 ~Tetrapotassium phosphate 7320-34-5 7.8E+04 n 1.2E+06 nm 2.0E+04 n 1.00E+00 P 1 ~Tetrasodium pyrophosphate 7722-88-5 7.8E+04 n 1.2E+06 nm 2.0E+04 n 3.25E+00 X 1 ~Trialuminum sodium tetra decahydrogenoctaorthophosphate (dihydrate)15136-87-5 2.5E+05 nm 3.8E+06 nm 6.5E+04 n 3.13E+00 X 1 0.1 ~Triphosphoric acid, aluminum salt (1:1) [aluminum triphosphate]13939-25-8 2.0E+05 nm 2.6E+06 nm 6.2E+04 n 1.00E+00 P 1 ~Tripotassium phosphate 7778-53-2 7.8E+04 n 1.2E+06 nm 2.0E+04 n 1.00E+00 P 1 ~Trisodium phosphate 7601-54-9 7.8E+04 n 1.2E+06 nm 2.0E+04 n 3.00E-04 I 3.00E-04 I V 1 Phosphine 7803-51-2 2.3E+01 n 3.5E+02 n 3.1E-01 n 1.3E+00 n 5.7E-01 n 2.00E-05 I V 1 Phosphorus 7723-14-0 1.6E+00 n 2.3E+01 n 4.0E-01 n 1.5E-03 n 2.00E-05 G V 1 Phosphorus, white 12185-10-3 1.6E+00 n 2.3E+01 n 4.0E-01 n 1.5E-03 n Phthalates 1.40E-02 I 2.40E-06 C 2.00E-02 I 1 0.1 ~Bis(2-ethylhexyl)phthalate 117-81-7 3.9E+01 c*1.6E+02 c 1.2E+00 c 5.1E+00 c 5.6E+00 c*6.0E+00 1.3E+00 c*1.4E+00 1.90E-03 P 2.00E-01 I 1 0.1 ~Butyl Benzyl Phthalate 85-68-7 2.9E+02 c*1.2E+03 c 1.6E+01 c 2.4E-01 c 1.00E+00 I 1 0.1 ~Butylphthalyl Butylglycolate 85-70-1 6.3E+04 n 8.2E+05 nm 1.3E+04 n 3.1E+02 n 1.00E-01 I 1 0.1 ~Dibutyl Phthalate 84-74-2 6.3E+03 n 8.2E+04 n 9.0E+02 n 2.3E+00 n 8.00E-01 I 1 0.1 ~Diethyl Phthalate 84-66-2 5.1E+04 n 6.6E+05 nm 1.5E+04 n 6.1E+00 n 1.00E-01 I V 1 ~Dimethylterephthalate 120-61-6 7.8E+03 n 1.2E+05 nm 1.9E+03 n 4.9E-01 n 1.00E-02 P 1 0.1 ~Octyl Phthalate, di-N-117-84-0 6.3E+02 n 8.2E+03 n 2.0E+02 n 5.7E+01 n 5.00E-01 X 1 0.1 ~Phthalic Acid, p-100-21-0 3.2E+04 n 4.1E+05 nm 9.4E+03 n 3.4E+00 n 2.00E+00 I 2.00E-02 C 1 0.1 ~Phthalic Anhydride 85-44-9 1.3E+05 nm 1.6E+06 nm 2.1E+01 n 8.8E+01 n 3.9E+04 n 8.5E+00 n 7.00E-02 I 1 0.1 Picloram 1918-02-1 4.4E+03 n 5.7E+04 n 1.4E+03 n 5.0E+02 3.8E-01 n 1.4E-01 1.00E-04 X 1 0.1 Picramic Acid (2-Amino-4,6-dinitrophenol)96-91-3 6.3E+00 n 8.2E+01 n 2.0E+00 n 1.3E-03 n 2.00E-03 X 1 0.1 Picric Acid (2,4,6-Trinitrophenol)88-89-1 1.3E+02 n 1.6E+03 n 4.0E+01 n 1.9E-01 n 7.30E-04 O 1 0.1 Pirimiphos, Methyl 29232-93-7 4.6E+01 n 6.0E+02 n 8.9E+00 n 8.4E-03 n 3.00E+01 C 8.60E-03 C 7.00E-06 H 1 0.1 Polybrominated Biphenyls 36355-01-8 1.8E-02 c*7.7E-02 c*3.3E-04 c 1.4E-03 c 2.6E-03 c* Polychlorinated Biphenyls (PCBs) 7.00E-02 G 2.00E-05 G 7.00E-05 I V 1 0.14 ~Aroclor 1016 12674-11-2 4.1E+00 n 2.7E+01 c**1.4E-01 c 6.1E-01 c 2.2E-01 c**2.1E-02 c** 2.00E+00 G 5.71E-04 G V 1 0.14 ~Aroclor 1221 11104-28-2 2.0E-01 c 8.3E-01 c 4.9E-03 c 2.1E-02 c 4.7E-03 c 8.0E-05 c 2.00E+00 G 5.71E-04 G V 1 0.14 ~Aroclor 1232 11141-16-5 1.7E-01 c 7.2E-01 c 4.9E-03 c 2.1E-02 c 4.7E-03 c 8.0E-05 c 2.00E+00 G 5.71E-04 G V 1 0.14 ~Aroclor 1242 53469-21-9 2.3E-01 c 9.5E-01 c 4.9E-03 c 2.1E-02 c 7.8E-03 c 1.2E-03 c 2.00E+00 G 5.71E-04 G V 1 0.14 ~Aroclor 1248 12672-29-6 2.3E-01 c 9.4E-01 c 4.9E-03 c 2.1E-02 c 7.8E-03 c 1.2E-03 c 2.00E+00 G 5.71E-04 G 2.00E-05 I V 1 0.14 ~Aroclor 1254 11097-69-1 2.4E-01 c**9.7E-01 c*4.9E-03 c 2.1E-02 c 7.8E-03 c*2.0E-03 c* 2.00E+00 G 5.71E-04 G V 1 0.14 ~Aroclor 1260 11096-82-5 2.4E-01 c 9.9E-01 c 4.9E-03 c 2.1E-02 c 7.8E-03 c 5.5E-03 c 6.00E-04 X V 1 0.14 ~Aroclor 5460 11126-42-4 3.5E+01 n 4.4E+02 n 1.2E+01 n 2.0E+00 n 3.90E+00 W 1.14E-03 W 2.33E-05 W 1.33E-03 W V 1 0.14 ~Heptachlorobiphenyl, 2,3,3',4,4',5,5'- (PCB 189)39635-31-9 1.3E-01 c*5.2E-01 c*2.5E-03 c 1.1E-02 c 4.0E-03 c 2.8E-03 c 3.90E+00 W 1.14E-03 W 2.33E-05 W 1.33E-03 W V 1 0.14 ~Hexachlorobiphenyl, 2,3',4,4',5,5'- (PCB 167)52663-72-6 1.2E-01 c*5.1E-01 c*2.5E-03 c 1.1E-02 c 4.0E-03 c 1.7E-03 c 3.90E+00 W 1.14E-03 W 2.33E-05 W 1.33E-03 W V 1 0.14 ~Hexachlorobiphenyl, 2,3,3',4,4',5'- (PCB 157)69782-90-7 1.2E-01 c*5.0E-01 c*2.5E-03 c 1.1E-02 c 4.0E-03 c 1.7E-03 c 3.90E+00 W 1.14E-03 W 2.33E-05 W 1.33E-03 W V 1 0.14 ~Hexachlorobiphenyl, 2,3,3',4,4',5- (PCB 156)38380-08-4 1.2E-01 c*5.0E-01 c*2.5E-03 c 1.1E-02 c 4.0E-03 c 1.7E-03 c 3.90E+03 W 1.14E+00 W 2.33E-08 W 1.33E-06 W V 1 0.14 ~Hexachlorobiphenyl, 3,3',4,4',5,5'- (PCB 169)32774-16-6 1.2E-04 c*5.1E-04 c*2.5E-06 c 1.1E-05 c 4.0E-06 c 1.7E-06 c 3.90E+00 W 1.14E-03 W 2.33E-05 W 1.33E-03 W V 1 0.14 ~Pentachlorobiphenyl, 2',3,4,4',5- (PCB 123)65510-44-3 1.2E-01 c*4.9E-01 c*2.5E-03 c 1.1E-02 c 4.0E-03 c 1.0E-03 c 3.90E+00 W 1.14E-03 W 2.33E-05 W 1.33E-03 W V 1 0.14 ~Pentachlorobiphenyl, 2,3',4,4',5- (PCB 118)31508-00-6 1.2E-01 c*4.9E-01 c*2.5E-03 c 1.1E-02 c 4.0E-03 c 1.0E-03 c 3.90E+00 W 1.14E-03 W 2.33E-05 W 1.33E-03 W V 1 0.14 ~Pentachlorobiphenyl, 2,3,3',4,4'- (PCB 105)32598-14-4 1.2E-01 c*4.9E-01 c*2.5E-03 c 1.1E-02 c 4.0E-03 c 1.0E-03 c 3.90E+00 W 1.14E-03 W 2.33E-05 W 1.33E-03 W V 1 0.14 ~Pentachlorobiphenyl, 2,3,4,4',5- (PCB 114)74472-37-0 1.2E-01 c*5.0E-01 c*2.5E-03 c 1.1E-02 c 4.0E-03 c 1.0E-03 c 1.30E+04 W 3.80E+00 W 7.00E-09 W 4.00E-07 W V 1 0.14 ~Pentachlorobiphenyl, 3,3',4,4',5- (PCB 126)57465-28-8 3.6E-05 c*1.5E-04 c*7.4E-07 c 3.2E-06 c 1.2E-06 c 3.0E-07 c 2.00E+00 I 5.71E-04 I V 1 0.14 ~Polychlorinated Biphenyls (high risk)1336-36-3 2.3E-01 c 9.4E-01 c 4.9E-03 c 2.1E-02 c 5.0E-01 4.00E-01 I 1.00E-04 I V 1 0.14 ~Polychlorinated Biphenyls (low risk)1336-36-3 2.8E-02 c 1.2E-01 c 4.4E-02 c 5.0E-01 6.8E-03 c 7.8E-02 7.00E-02 I 2.00E-05 I V 1 0.14 ~Polychlorinated Biphenyls (lowest risk)1336-36-3 1.4E-01 c 6.1E-01 c 5.0E-01 1.30E+01 W 3.80E-03 W 7.00E-06 W 4.00E-04 W 1 0.14 ~Tetrachlorobiphenyl, 3,3',4,4'- (PCB 77)32598-13-3 3.8E-02 c*1.6E-01 c*7.4E-04 c 3.2E-03 c 6.0E-03 c*9.4E-04 c* 3.90E+01 W 1.14E-02 W 2.33E-06 W 1.33E-04 W V 1 0.14 ~Tetrachlorobiphenyl, 3,4,4',5- (PCB 81)70362-50-4 1.2E-02 c*4.8E-02 c*2.5E-04 c 1.1E-03 c 4.0E-04 c 6.2E-05 c 6.00E-04 I 1 0.1 Polymeric Methylene Diphenyl Diisocyanate (PMDI)9016-87-9 8.5E+05 nm 3.6E+06 nm 6.3E-01 n 2.6E+00 n Polynuclear Aromatic Hydrocarbons (PAHs) 6.00E-02 I V 1 0.13 ~Acenaphthene 83-32-9 3.6E+03 n 4.5E+04 n 5.3E+02 n 5.5E+00 n 3.00E-01 I V 1 0.13 ~Anthracene 120-12-7 1.8E+04 n 2.3E+05 nm 1.8E+03 n 5.8E+01 n 1.00E-01 E 6.00E-05 E V M 1 0.13 ~Benz[a]anthracene 56-55-3 1.1E+00 c 2.1E+01 c 1.7E-02 c 2.0E-01 c 3.0E-02 c 1.1E-02 c 1.00E+00 I 6.00E-04 I 3.00E-04 I 2.00E-06 I M 1 0.13 ~Benzo[a]pyrene 50-32-8 1.1E-01 c 2.1E+00 c 1.7E-03 c**8.8E-03 n 2.5E-02 c 2.0E-01 2.9E-02 c 2.4E-01 1.00E-01 E 6.00E-05 E M 1 0.13 ~Benzo[b]fluoranthene 205-99-2 1.1E+00 c 2.1E+01 c 1.7E-02 c 2.0E-01 c 2.5E-01 c 3.0E-01 c 9.00E-05 X 2.00E-06 X 1 0.1 ~Benzo[e]pyrene 192-97-2 5.7E+00 n 7.3E+01 n 2.1E-03 n 8.8E-03 n 1.8E+00 n 2.2E+00 n 1.20E+00 C 1.10E-04 C 1 0.13 ~Benzo[j]fluoranthene 205-82-3 4.2E-01 c 1.8E+00 c 2.6E-02 c 1.1E-01 c 6.5E-02 c 7.8E-02 c 1.00E-02 E 6.00E-06 E M 1 0.13 ~Benzo[k]fluoranthene 207-08-9 1.1E+01 c 2.1E+02 c 1.7E-01 c 2.0E+00 c 2.5E+00 c 2.9E+00 c 5.00E-03 X 1 0.1 ~Benzofluorene, 2,3-243-17-4 3.2E+02 n 4.1E+03 n 1.0E+02 n 1.9E+01 n 8.00E-02 I V 1 0.13 ~Chloronaphthalene, Beta-91-58-7 4.8E+03 n 6.0E+04 n 7.5E+02 n 3.9E+00 n Page 9 of 12 Regional Screening Level (RSL) Summary Table (TR=1E-06, HQ=1) November 2024 SFO (mg/kg-day)-1 k e y IUR (ug/m3)-1 k e y RfDo (mg/kg-day) k e y RfCi (mg/m3) k e y v o l mutagen GIABS ABSd Csat (mg/kg) Analyte CAS No. Resident Soil (mg/kg) k e y Industrial Soil (mg/kg) k e y Resident Air (ug/m3) k e y Industrial Air (ug/m3) k e y Tap Water (ug/L) k e y MCL (ug/L) Risk-based SSL (mg/kg) k e y MCL-based SSL (mg/kg) Key: I = IRIS; P = PPRTV; O = OPP; A = ATSDR; T = ATSDR DRAFT; C = Cal EPA; X = PPRTV Screening Level; H = HEAST; D = OW; R = ORD; N = WI; W = TEF applied; E = RPF applied; G = see user's guide; c = cancer; n = noncancer; * = where: nc SL < 100X ca SL; ** = where nc SL < 10X ca SL; SSL values are based on DAF=1; m = ceiling limit exceeded; s = Csat exceeded; V = volatile; M = mutagen. Toxicity and Chemical-specific Information Contaminant Screening Levels Protection of Groundwater 1.00E-03 E 6.00E-07 E M 1 0.13 ~Chrysene 218-01-9 1.1E+02 c 2.1E+03 c 1.7E+00 c 2.0E+01 c 2.5E+01 c 9.0E+00 c 1.00E+00 E 6.00E-04 E M 1 0.13 ~Dibenz[a,h]anthracene 53-70-3 1.1E-01 c 2.1E+00 c 1.7E-03 c 2.0E-02 c 2.5E-02 c 9.6E-02 c 1.20E+01 C 1.10E-03 C 1 0.13 ~Dibenzo[a,e]pyrene 192-65-4 4.2E-02 c 1.8E-01 c 2.6E-03 c 1.1E-02 c 6.5E-03 c 8.4E-02 c 2.50E+02 C 7.10E-02 C M 1 0.13 ~Dimethylbenz[a]anthracene, 7,12-57-97-6 4.6E-04 c 8.4E-03 c 1.4E-05 c 1.7E-04 c 1.0E-04 c 9.9E-05 c 4.00E-02 I 1 0.13 ~Fluoranthene 206-44-0 2.4E+03 n 3.0E+04 n 8.0E+02 n 8.9E+01 n 4.00E-02 I V 1 0.13 ~Fluorene 86-73-7 2.4E+03 n 3.0E+04 n 2.9E+02 n 5.4E+00 n 1.00E-01 E 6.00E-05 E M 1 0.13 ~Indeno[1,2,3-cd]pyrene 193-39-5 1.1E+00 c 2.1E+01 c 1.7E-02 c 2.0E-01 c 2.5E-01 c 9.8E-01 c 5.10E-02 X 7.00E-02 T 3.00E-06 P V 1 0.13 3.94E+02 ~Methylnaphthalene, 1-90-12-0 1.8E-01 n 7.7E-01 n 3.1E-03 n 1.3E-02 n 6.3E-03 n 3.3E-05 n 4.00E-03 I V 1 0.13 ~Methylnaphthalene, 2-91-57-6 2.4E+02 n 3.0E+03 n 3.6E+01 n 1.9E-01 n 1.20E-01 C 3.40E-05 C 2.00E-02 I 3.00E-03 I V 1 0.13 ~Naphthalene 91-20-3 2.0E+00 c*8.6E+00 c*8.3E-02 c*3.6E-01 c*1.2E-01 c*3.8E-04 c* 1.20E+00 C 1.10E-04 C 1 0.13 ~Nitropyrene, 4-57835-92-4 4.2E-01 c 1.8E+00 c 2.6E-02 c 1.1E-01 c 1.9E-02 c 3.3E-03 c 9.00E-05 X 2.00E-06 X 1 0.13 ~Perylene 198-55-0 5.4E+00 n 6.7E+01 n 2.1E-03 n 8.8E-03 n 1.8E+00 n 2.2E+00 n 3.00E-02 I V 1 0.13 ~Pyrene 129-00-0 1.8E+03 n 2.3E+04 n 1.2E+02 n 1.3E+01 n 1.50E-01 I 9.00E-03 I 1 0.1 Prochloraz 67747-09-5 3.6E+00 c 1.5E+01 c 3.8E-01 c 1.9E-03 c 6.00E-03 H V 1 Profluralin 26399-36-0 4.7E+02 n 7.0E+03 n 2.6E+01 n 1.6E+00 n 1.50E-02 I 1 0.1 Prometon 1610-18-0 9.5E+02 n 1.2E+04 n 2.5E+02 n 1.2E-01 n 4.00E-02 O 1 0.1 Prometryn 7287-19-6 2.5E+03 n 3.3E+04 n 6.0E+02 n 9.0E-01 n 7.50E-02 I 1 0.1 Pronamide 23950-58-5 4.7E+03 n 6.2E+04 n 1.2E+03 n 1.2E+00 n 1.30E-02 I 1 0.1 Propachlor 1918-16-7 8.2E+02 n 1.1E+04 n 2.5E+02 n 1.5E-01 n 5.00E-03 I 1 0.1 Propanil 709-98-8 3.2E+02 n 4.1E+03 n 8.2E+01 n 4.5E-02 n 1.92E-01 O 4.00E-02 O 1 0.1 Propargite 2312-35-8 2.8E+00 c 1.2E+01 c 1.6E-01 c 1.1E-02 c 2.00E-03 I V 1 1.11E+05 Propargyl Alcohol 107-19-7 1.6E+02 n 2.3E+03 n 4.0E+01 n 8.1E-03 n 2.00E-02 I 1 0.1 Propazine 139-40-2 1.3E+03 n 1.6E+04 n 3.4E+02 n 3.0E-01 n 2.00E-02 I 1 0.1 Propham 122-42-9 1.3E+03 n 1.6E+04 n 3.5E+02 n 2.2E-01 n 1.00E-01 O 1 0.1 Propiconazole 60207-90-1 6.3E+03 n 8.2E+04 n 1.6E+03 n 5.3E+00 n 8.00E-03 I V 1 3.26E+04 Propionaldehyde 123-38-6 7.5E+01 n 3.1E+02 n 8.3E+00 n 3.5E+01 n 1.7E+01 n 3.4E-03 n 1.00E-01 X 1.00E+00 X V 1 2.64E+02 Propyl benzene 103-65-1 3.8E+03 ns 2.4E+04 ns 1.0E+03 n 4.4E+03 n 6.6E+02 n 1.2E+00 n 3.00E+00 C V 1 3.49E+02 Propylene 115-07-1 2.2E+03 ns 9.3E+03 ns 3.1E+03 n 1.3E+04 n 6.3E+03 n 6.0E+00 n 2.00E+01 P 1 0.1 Propylene Glycol 57-55-6 1.3E+06 nm 1.6E+07 nm 4.0E+05 n 8.1E+01 n 2.72E-04 A 1 0.1 Propylene Glycol Dinitrate 6423-43-4 3.9E+05 nm 1.6E+06 nm 2.8E-01 n 1.2E+00 n 7.00E-01 H 2.00E+00 I V 1 1.06E+05 Propylene Glycol Monomethyl Ether 107-98-2 4.1E+04 n 3.7E+05 nms 2.1E+03 n 8.8E+03 n 3.2E+03 n 6.5E-01 n 2.40E-01 I 3.70E-06 I 3.00E-02 I V 1 7.77E+04 Propylene Oxide 75-56-9 2.1E+00 c 9.7E+00 c 7.6E-01 c*3.3E+00 c*2.7E-01 c 5.6E-05 c 1.00E-03 I V 1 5.30E+05 Pyridine 110-86-1 7.8E+01 n 1.2E+03 n 2.0E+01 n 6.8E-03 n 5.00E-04 I 1 0.1 Quinalphos 13593-03-8 3.2E+01 n 4.1E+02 n 5.1E+00 n 4.3E-02 n 3.00E+00 I 1 0.1 Quinoline 91-22-5 1.8E-01 c 7.7E-01 c 2.4E-02 c 7.8E-05 c 9.00E-03 I 1 0.1 Quizalofop-ethyl 76578-14-8 5.7E+02 n 7.4E+03 n 1.2E+02 n 1.9E+00 n 3.00E+04 A 1 Refractory Ceramic Fibers (units in fibers)E715557 3.1E+04 G 1.3E+05 G 3.00E-02 I 1 0.1 Resmethrin 10453-86-8 1.9E+03 n 2.5E+04 n 6.7E+01 n 4.2E+01 n 5.00E-02 H V 1 Ronnel 299-84-3 3.9E+03 n 5.8E+04 n 4.1E+02 n 3.7E+00 n 4.00E-03 I 1 0.1 Rotenone 83-79-4 2.5E+02 n 3.3E+03 n 6.1E+01 n 3.2E+01 n 2.20E-01 C 6.30E-05 C M 1 0.1 Safrole 94-59-7 5.5E-01 c 1.0E+01 c 1.6E-02 c 1.9E-01 c 9.6E-02 c 5.9E-05 c 5.00E-03 I 1 Selenious Acid 7783-00-8 3.9E+02 n 5.8E+03 n 1.0E+02 n 5.00E-03 I 2.00E-02 C 1 Selenium 7782-49-2 3.9E+02 n 5.8E+03 n 2.1E+01 n 8.8E+01 n 1.0E+02 n 5.0E+01 5.2E-01 n 2.6E-01 5.00E-03 C 2.00E-02 C 1 Selenium Sulfide 7446-34-6 3.9E+02 n 5.8E+03 n 2.1E+01 n 8.8E+01 n 1.0E+02 n 1.40E-01 O 1 0.1 Sethoxydim 74051-80-2 8.8E+03 n 1.1E+05 nm 1.6E+03 n 1.4E+01 n 3.00E-03 C 1 Silica (crystalline, respirable)7631-86-9 4.3E+06 nm 1.8E+07 nm 3.1E+00 n 1.3E+01 n 5.00E-03 I 0.04 Silver 7440-22-4 3.9E+02 n 5.8E+03 n 9.4E+01 n 8.0E-01 n 1.20E-01 H 5.00E-03 I 1 0.1 Simazine 122-34-9 4.5E+00 c*1.9E+01 c 6.1E-01 c 4.0E+00 3.0E-04 c 2.0E-03 1.30E-02 I 1 0.1 Sodium Acifluorfen 62476-59-9 8.2E+02 n 1.1E+04 n 2.6E+02 n 2.1E+00 n 4.00E-03 I 1 Sodium Azide 26628-22-8 3.1E+02 n 4.7E+03 n 8.0E+01 n 2.70E-01 H 3.00E-02 I 1 0.1 Sodium Diethyldithiocarbamate 148-18-5 2.0E+00 c 8.5E+00 c 2.9E-01 c 1.8E-04 c 5.00E-02 A 1.40E-02 C 1 Sodium Fluoride 7681-49-4 3.9E+03 n 5.8E+04 n 1.5E+01 n 6.1E+01 n 1.0E+03 n 4.0E+03 1.5E+02 n 6.0E+02 2.00E-05 I 1 0.1 Sodium Fluoroacetate 62-74-8 1.3E+00 n 1.6E+01 n 4.0E-01 n 8.1E-05 n 1.00E-03 H 1 Sodium Metavanadate 13718-26-8 7.8E+01 n 1.2E+03 n 2.0E+01 n 8.00E-04 P 1 Sodium Tungstate 13472-45-2 6.3E+01 n 9.3E+02 n 1.6E+01 n 8.00E-04 P 1 Sodium Tungstate Dihydrate 10213-10-2 6.3E+01 n 9.3E+02 n 1.6E+01 n 2.40E-02 H 3.00E-02 I 1 0.1 Stirofos (Tetrachlorovinphos)961-11-5 2.3E+01 c*9.6E+01 c 2.8E+00 c 8.2E-03 c 6.00E-01 I 1 Strontium, Stable 7440-24-6 4.7E+04 n 7.0E+05 nm 1.2E+04 n 4.2E+02 n 3.00E-04 I 1 0.1 Strychnine 57-24-9 1.9E+01 n 2.5E+02 n 5.9E+00 n 6.5E-02 n 2.00E-01 I 1.00E+00 I V 1 8.67E+02 Styrene 100-42-5 6.0E+03 ns 3.5E+04 ns 1.0E+03 n 4.4E+03 n 1.2E+03 n 1.0E+02 1.3E+00 n 1.1E-01 3.00E-03 P 1 0.1 Styrene-Acrylonitrile (SAN) Trimer (THNA isomer)57964-39-3 1.9E+02 n 2.5E+03 n 4.8E+01 n 3.00E-03 P 1 0.1 Styrene-Acrylonitrile (SAN) Trimer (THNP isomer)57964-40-6 1.9E+02 n 2.5E+03 n 4.8E+01 n 1.00E-03 P 2.00E-03 X 1 0.1 Sulfolane 126-33-0 6.3E+01 n 8.2E+02 n 2.1E+00 n 8.8E+00 n 2.0E+01 n 4.4E-03 n 8.00E-04 P 1 0.1 Sulfonylbis(4-chlorobenzene), 1,1'-80-07-9 5.1E+01 n 6.6E+02 n 1.1E+01 n 6.5E-02 n 1.00E-03 C V 1 Sulfur Trioxide 7446-11-9 1.4E+06 nm 6.0E+06 nm 1.0E+00 n 4.4E+00 n 2.1E+00 n 1.00E-03 C 1 Sulfuric Acid 7664-93-9 1.4E+06 nm 6.0E+06 nm 1.0E+00 n 4.4E+00 n 2.50E-02 I 7.10E-06 I 5.00E-02 H 1 0.1 Sulfurous acid, 2-chloroethyl 2-[4-(1,1-dimethylethyl)phenoxy]-1-methylethyl ester 140-57-8 2.2E+01 c 9.2E+01 c 4.0E-01 c 1.7E+00 c 1.3E+00 c 1.5E-02 c 7.00E-02 I 1 0.1 Tebuthiuron 34014-18-1 4.4E+03 n 5.7E+04 n 1.4E+03 n 3.9E-01 n 2.00E-02 H 1 0.1 Temephos 3383-96-8 1.3E+03 n 1.6E+04 n 4.0E+02 n 7.6E+01 n 1.30E-02 I 1 0.1 Terbacil 5902-51-2 8.2E+02 n 1.1E+04 n 2.5E+02 n 7.5E-02 n 2.50E-05 H V 1 3.09E+01 Terbufos 13071-79-9 2.0E+00 n 2.9E+01 n 2.4E-01 n 5.2E-04 n 1.00E-03 I 1 0.1 Terbutryn 886-50-0 6.3E+01 n 8.2E+02 n 1.3E+01 n 1.9E-02 n 5.00E-03 C 1.30E-06 C V 1 Tert-Butyl Acetate 540-88-5 8.1E+00 c 3.6E+01 c 2.2E+00 c 9.4E+00 c 3.3E+00 c 7.6E-04 c 1.00E-04 I 1 0.1 Tetrabromodiphenyl ether, 2,2',4,4'- (BDE-47)5436-43-1 6.3E+00 n 8.2E+01 n 2.0E+00 n 5.3E-02 n 3.00E-05 P V 1 Tetrachlorobenzene, 1,2,4,5-95-94-3 2.3E+00 n 3.5E+01 n 1.7E-01 n 7.9E-04 n 2.60E-02 I 7.40E-06 I 3.00E-02 I V 1 6.80E+02 Tetrachloroethane, 1,1,1,2-630-20-6 2.0E+00 c 8.8E+00 c 3.8E-01 c 1.7E+00 c 5.7E-01 c 2.2E-04 c 2.00E-01 I 5.80E-05 C 2.00E-02 I V 1 1.90E+03 Tetrachloroethane, 1,1,2,2-79-34-5 6.0E-01 c 2.7E+00 c 4.8E-02 c 2.1E-01 c 7.6E-02 c 3.0E-05 c 2.10E-03 I 2.60E-07 I 6.00E-03 I 4.00E-02 I V 1 1.66E+02 Tetrachloroethylene 127-18-4 2.4E+01 c**1.0E+02 c**1.1E+01 c**4.7E+01 c**1.1E+01 c**5.0E+00 5.1E-03 c**2.3E-03 Page 10 of 12 Regional Screening Level (RSL) Summary Table (TR=1E-06, HQ=1) November 2024 SFO (mg/kg-day)-1 k e y IUR (ug/m3)-1 k e y RfDo (mg/kg-day) k e y RfCi (mg/m3) k e y v o l mutagen GIABS ABSd Csat (mg/kg) Analyte CAS No. Resident Soil (mg/kg) k e y Industrial Soil (mg/kg) k e y Resident Air (ug/m3) k e y Industrial Air (ug/m3) k e y Tap Water (ug/L) k e y MCL (ug/L) Risk-based SSL (mg/kg) k e y MCL-based SSL (mg/kg) Key: I = IRIS; P = PPRTV; O = OPP; A = ATSDR; T = ATSDR DRAFT; C = Cal EPA; X = PPRTV Screening Level; H = HEAST; D = OW; R = ORD; N = WI; W = TEF applied; E = RPF applied; G = see user's guide; c = cancer; n = noncancer; * = where: nc SL < 100X ca SL; ** = where nc SL < 10X ca SL; SSL values are based on DAF=1; m = ceiling limit exceeded; s = Csat exceeded; V = volatile; M = mutagen. Toxicity and Chemical-specific Information Contaminant Screening Levels Protection of Groundwater 3.00E-02 I 1 0.1 Tetrachlorophenol, 2,3,4,6-58-90-2 1.9E+03 n 2.5E+04 n 2.4E+02 n 1.8E-01 n 1.60E+01 X 6.00E-05 X V 1 Tetrachlorotoluene, p- alpha, alpha, alpha-5216-25-1 4.3E-02 c 2.0E-01 c 1.7E-03 c 5.7E-06 c 5.00E-04 I 1 0.1 Tetraethyl Dithiopyrophosphate 3689-24-5 3.2E+01 n 4.1E+02 n 7.1E+00 n 5.2E-03 n 8.00E+01 I V 1 2.05E+03 Tetrafluoroethane, 1,1,1,2-811-97-2 1.0E+05 nms 4.3E+05 nms 8.3E+04 n 3.5E+05 n 1.7E+05 n 9.3E+01 n 1.00E-04 X 1 0.1 Tetramethylphosphoramide, -N,N,N',N" (TMPA)16853-36-4 6.3E+00 n 8.2E+01 n 2.0E+00 n 2.00E-03 P 1 0.00065 Tetryl (Trinitrophenylmethylnitramine)479-45-8 1.6E+02 n 2.3E+03 n 3.9E+01 n 3.7E-01 n 2.00E-05 G 1 Thallic Oxide 1314-32-5 1.6E+00 n 2.3E+01 n 4.0E-01 n 1.00E-05 X 1 Thallium (I) Nitrate 10102-45-1 7.8E-01 n 1.2E+01 n 2.0E-01 n 1.00E-05 X 1 Thallium (Soluble Salts)7440-28-0 7.8E-01 n 1.2E+01 n 2.0E-01 n 2.0E+00 1.4E-02 n 1.4E-01 1.00E-05 X V 1 Thallium Acetate 563-68-8 7.8E-01 n 1.2E+01 n 2.0E-01 n 4.1E-05 n 2.00E-05 X 1 0.1 Thallium Carbonate 6533-73-9 1.3E+00 n 1.6E+01 n 4.0E-01 n 8.3E-05 n 1.00E-05 X 1 Thallium Chloride 7791-12-0 7.8E-01 n 1.2E+01 n 2.0E-01 n 1.00E-05 G 1 Thallium Selenite 12039-52-0 7.8E-01 n 1.2E+01 n 2.0E-01 n 2.00E-05 X 1 Thallium Sulfate 7446-18-6 1.6E+00 n 2.3E+01 n 4.0E-01 n 4.30E-02 O 1 0.1 Thifensulfuron-methyl 79277-27-3 2.7E+03 n 3.5E+04 n 8.6E+02 n 2.6E-01 n 1.00E-02 I 1 0.1 Thiobencarb 28249-77-6 6.3E+02 n 8.2E+03 n 1.6E+02 n 5.5E-01 n 2.00E-04 P 1 Thiocyanates E1790665 1.6E+01 n 2.3E+02 n 4.0E+00 n 2.00E-04 X V 1 Thiocyanic Acid 463-56-9 1.6E+01 n 2.3E+02 n 4.0E+00 n 3.00E-02 H 1 0.1 Thiocyanic acid, (2-benzothiazolylthio)methyl ester (TCMTB)21564-17-0 1.9E+03 n 2.5E+04 n 4.8E+02 n 3.3E+00 n 7.00E-02 X 1 0.0075 Thiodiglycol 111-48-8 5.4E+03 n 7.9E+04 n 1.4E+03 n 2.8E-01 n 3.00E-04 H 1 0.1 Thiofanox 39196-18-4 1.9E+01 n 2.5E+02 n 5.3E+00 n 1.8E-03 n 1.16E-02 O 1.60E-01 O 1 0.1 Thiophanate, Methyl 23564-05-8 4.7E+01 c 2.0E+02 c 6.7E+00 c 5.7E-03 c 1.50E-02 O 1 0.1 Thiram 137-26-8 9.5E+02 n 1.2E+04 n 2.9E+02 n 4.2E-01 n 6.00E-01 H 1 Tin 7440-31-5 4.7E+04 n 7.0E+05 nm 1.2E+04 n 3.0E+03 n 1.00E-04 A V 1 Titanium Tetrachloride 7550-45-0 1.4E+05 nm 6.0E+05 nm 1.0E-01 n 4.4E-01 n 2.1E-01 n 8.00E-02 I 5.00E+00 I V 1 8.18E+02 Toluene 108-88-3 4.9E+03 ns 4.7E+04 ns 5.2E+03 n 2.2E+04 n 1.1E+03 n 1.0E+03 7.6E-01 n 6.9E-01 3.90E-02 C 1.10E-05 C 8.00E-06 C V 1 Toluene-2,4-diisocyanate 584-84-9 6.4E+00 n 2.7E+01 n 8.3E-03 n 3.5E-02 n 1.7E-02 n 2.5E-04 n 3.90E-02 C 1.10E-05 C 8.00E-06 C V 1 1.71E+03 Toluene-2,6-diisocyanate 91-08-7 5.3E+00 n 2.2E+01 n 8.3E-03 n 3.5E-02 n 1.7E-02 n 2.6E-04 n 1.00E-04 X 1 0.1 Toluenediamine, 2,3-2687-25-4 6.3E+00 n 8.2E+01 n 2.0E+00 n 6.2E-04 n 1.80E-01 X 2.00E-04 X 1 0.1 Toluenediamine, 2,5-95-70-5 3.0E+00 c**1.3E+01 c*4.3E-01 c**1.3E-04 c** 1.00E-04 X 1 0.1 Toluenediamine, 3,4-496-72-0 6.3E+00 n 8.2E+01 n 2.0E+00 n 6.2E-04 n 5.00E-03 P 1 0.1 Toluic Acid, p-99-94-5 3.2E+02 n 4.1E+03 n 9.0E+01 n 2.3E-02 n 1.60E-02 P 5.10E-05 C 1 0.1 Toluidine, o- (Methylaniline, 2-)95-53-4 3.4E+01 c 1.4E+02 c 5.5E-02 c 2.4E-01 c 4.7E+00 c 2.0E-03 c 3.00E-02 P 4.00E-03 X 1 0.1 Toluidine, p-106-49-0 1.8E+01 c*7.7E+01 c*2.5E+00 c*1.1E-03 c* 3.00E+00 P V 1 3.42E-01 Total Petroleum Hydrocarbons (Aliphatic High)E1790670 2.3E+05 nms 3.5E+06 nms 6.0E+04 n 2.4E+03 n 5.00E-03 P 4.00E-01 P V 1 1.12E+02 Total Petroleum Hydrocarbons (Aliphatic Low)E1790666 2.5E+02 ns 1.9E+03 ns 4.2E+02 n 1.8E+03 n 2.8E+01 n 2.0E-02 n 1.00E-02 X 1.00E-01 P V 1 6.86E+00 Total Petroleum Hydrocarbons (Aliphatic Medium)E1790668 9.6E+01 ns 4.4E+02 ns 1.0E+02 n 4.4E+02 n 1.0E+02 n 1.5E+00 n 3.00E-04 P 2.00E-06 P M 1 0.13 Total Petroleum Hydrocarbons (Aromatic High)E1790676 1.8E+01 n 2.2E+02 n 2.1E-03 n 8.8E-03 n 6.0E+00 n 7.1E+00 n 1.00E-02 P 6.00E-02 P V 1 2.31E+02 Total Petroleum Hydrocarbons (Aromatic Medium)E1790674 3.0E+02 ns 1.7E+03 ns 6.3E+01 n 2.6E+02 n 5.7E+01 n 8.3E-02 n 1.10E+00 I 3.20E-04 I 9.00E-05 P 1 0.1 Toxaphene 8001-35-2 4.9E-01 c*2.1E+00 c*8.8E-03 c 3.8E-02 c 7.1E-02 c*3.0E+00 1.1E-02 c*4.6E-01 3.00E-05 X 1 0.1 Toxaphene, Weathered E1841606 1.9E+00 n 2.5E+01 n 6.0E-01 n 9.3E-02 n 7.50E-03 I 1 0.1 Tralomethrin 66841-25-6 4.7E+02 n 6.2E+03 n 1.5E+02 n 5.8E+01 n 3.00E-04 A V 1 Tri-n-butyltin 688-73-3 2.3E+01 n 3.5E+02 n 3.7E+00 n 8.2E-02 n 8.00E+01 X 1 0.1 Triacetin 102-76-1 5.1E+06 nm 6.6E+07 nm 1.6E+06 n 4.5E+02 n 3.40E-02 O 1 0.1 Triadimefon 43121-43-3 2.1E+03 n 2.8E+04 n 6.3E+02 n 5.0E-01 n 7.17E-02 O 2.50E-02 O V 1 Triallate 2303-17-5 9.7E+00 c 4.6E+01 c 4.7E-01 c 1.0E-03 c 1.00E-02 I 1 0.1 Triasulfuron 82097-50-5 6.3E+02 n 8.2E+03 n 2.0E+02 n 2.1E-01 n 8.00E-03 I 1 0.1 Tribenuron-methyl 101200-48-0 5.1E+02 n 6.6E+03 n 1.6E+02 n 6.1E-02 n 5.00E-03 I V 1 Tribromobenzene, 1,2,4-615-54-3 3.9E+02 n 5.8E+03 n 4.5E+01 n 6.4E-02 n 9.00E-03 X 1 0.1 Tribromophenol, 2,4,6-118-79-6 5.7E+02 n 7.4E+03 n 1.2E+02 n 2.2E-01 n 2.00E-04 O 1 0.1 Tribufos 78-48-8 1.3E+01 n 1.6E+02 n 5.7E-01 n 2.8E-03 n 9.00E-03 P 1.00E-02 P 1 0.1 Tributyl Phosphate 126-73-8 6.0E+01 c*2.6E+02 c*5.2E+00 c*2.5E-02 c* 3.00E-04 P 1 0.1 Tributyltin Compounds E1790679 1.9E+01 n 2.5E+02 n 6.0E+00 n 3.00E-04 I 1 0.1 Tributyltin Oxide 56-35-9 1.9E+01 n 2.5E+02 n 5.7E+00 n 2.9E+02 n 1 0.1 Trichloramine 10025-85-1 4.0E+03(G) 3.00E+01 I 5.00E+00 P V 1 9.10E+02 Trichloro-1,2,2-trifluoroethane, 1,1,2-76-13-1 6.7E+03 ns 2.8E+04 ns 5.2E+03 n 2.2E+04 n 1.0E+04 n 2.6E+01 n 7.00E-02 I 2.00E-02 I 1 0.1 Trichloroacetic Acid 76-03-9 7.8E+00 c 3.3E+01 c 1.1E+00 c 6.0E+01(G)2.2E-04 c 1.2E-02 2.90E-02 H 1 0.1 Trichloroaniline HCl, 2,4,6-33663-50-2 1.9E+01 c 7.9E+01 c 2.7E+00 c 7.4E-03 c 7.00E-03 X 3.00E-05 X 1 0.1 Trichloroaniline, 2,4,6-634-93-5 1.9E+00 n 2.5E+01 n 4.0E-01 n 3.6E-03 n 8.00E-04 X V 1 Trichlorobenzene, 1,2,3-87-61-6 6.3E+01 n 9.3E+02 n 7.0E+00 n 2.1E-02 n 2.90E-02 P 1.00E-02 I 2.00E-03 P V 1 4.04E+02 Trichlorobenzene, 1,2,4-120-82-1 2.4E+01 c**1.1E+02 c**2.1E+00 n 8.8E+00 n 1.2E+00 c**7.0E+01 3.4E-03 c**2.0E-01 2.00E+00 I 5.00E+00 I V 1 6.40E+02 Trichloroethane, 1,1,1-71-55-6 8.1E+03 ns 3.6E+04 ns 5.2E+03 n 2.2E+04 n 8.0E+03 n 2.0E+02 2.8E+00 n 7.0E-02 5.70E-02 I 1.60E-05 I 4.00E-03 I 2.00E-04 X V 1 2.16E+03 Trichloroethane, 1,1,2-79-00-5 1.1E+00 c**5.0E+00 c**1.8E-01 c**7.7E-01 c**2.8E-01 c**5.0E+00 8.9E-05 c**1.6E-03 4.60E-02 I 4.10E-06 I 5.00E-04 I 2.00E-03 I V M 1 6.92E+02 Trichloroethylene 79-01-6 9.4E-01 c**6.0E+00 c**4.8E-01 c**3.0E+00 c**4.9E-01 c**5.0E+00 1.8E-04 c**1.8E-03 3.00E-01 I V 1 1.23E+03 Trichlorofluoromethane 75-69-4 2.3E+04 ns 3.5E+05 nms 5.2E+03 n 3.3E+00 n 1.00E-01 I 1 0.1 Trichlorophenol, 2,4,5-95-95-4 6.3E+03 n 8.2E+04 n 1.2E+03 n 4.0E+00 n 1.10E-02 I 3.10E-06 I 1.00E-03 P 1 0.1 Trichlorophenol, 2,4,6-88-06-2 4.9E+01 c**2.1E+02 c**9.1E-01 c 4.0E+00 c 4.1E+00 c**4.0E-03 c** 1.00E-02 I 1 0.1 Trichlorophenoxyacetic Acid, 2,4,5-93-76-5 6.3E+02 n 8.2E+03 n 1.6E+02 n 6.8E-02 n 8.00E-03 I 1 0.1 Trichlorophenoxypropionic acid, -2,4,5 93-72-1 5.1E+02 n 6.6E+03 n 1.1E+02 n 5.0E+01 6.1E-02 n 2.8E-02 5.00E-03 I V 1 1.28E+03 Trichloropropane, 1,1,2-598-77-6 3.9E+02 n 5.8E+03 ns 8.8E+01 n 3.5E-02 n 3.00E+01 I 4.00E-03 I 3.00E-04 I V M 1 1.40E+03 Trichloropropane, 1,2,3-96-18-4 5.1E-03 c 1.1E-01 c 3.1E-01 n 1.3E+00 n 7.5E-04 c 3.2E-07 c 3.00E-03 X 3.00E-04 P V 1 3.11E+02 Trichloropropene, 1,2,3-96-19-5 7.3E-01 n 3.1E+00 n 3.1E-01 n 1.3E+00 n 6.2E-01 n 3.1E-04 n 2.00E-02 A 1 0.1 Tricresyl Phosphate (TCP)1330-78-5 1.3E+03 n 1.6E+04 n 1.6E+02 n 1.5E+01 n 3.00E-03 I 1 0.1 Tridiphane 58138-08-2 1.9E+02 n 2.5E+03 n 1.8E+01 n 1.3E-01 n 7.00E-03 I V 1 2.79E+04 Triethylamine 121-44-8 1.2E+02 n 4.8E+02 n 7.3E+00 n 3.1E+01 n 1.5E+01 n 4.4E-03 n 2.00E+00 P 1 0.1 Triethylene Glycol 112-27-6 1.3E+05 nm 1.6E+06 nm 4.0E+04 n 8.8E+00 n 2.00E+01 P V 1 4.81E+03 Trifluoroethane, 1,1,1-420-46-2 1.5E+04 ns 6.2E+04 ns 2.1E+04 n 8.8E+04 n 4.2E+04 n 1.3E+02 n 7.70E-03 I 7.50E-03 I V 1 Trifluralin 1582-09-8 9.0E+01 c**4.2E+02 c*2.6E+00 c*8.4E-02 c* Page 11 of 12 Regional Screening Level (RSL) Summary Table (TR=1E-06, HQ=1) November 2024 SFO (mg/kg-day)-1 k e y IUR (ug/m3)-1 k e y RfDo (mg/kg-day) k e y RfCi (mg/m3) k e y v o l mutagen GIABS ABSd Csat (mg/kg) Analyte CAS No. Resident Soil (mg/kg) k e y Industrial Soil (mg/kg) k e y Resident Air (ug/m3) k e y Industrial Air (ug/m3) k e y Tap Water (ug/L) k e y MCL (ug/L) Risk-based SSL (mg/kg) k e y MCL-based SSL (mg/kg) Key: I = IRIS; P = PPRTV; O = OPP; A = ATSDR; T = ATSDR DRAFT; C = Cal EPA; X = PPRTV Screening Level; H = HEAST; D = OW; R = ORD; N = WI; W = TEF applied; E = RPF applied; G = see user's guide; c = cancer; n = noncancer; * = where: nc SL < 100X ca SL; ** = where nc SL < 10X ca SL; SSL values are based on DAF=1; m = ceiling limit exceeded; s = Csat exceeded; V = volatile; M = mutagen. Toxicity and Chemical-specific Information Contaminant Screening Levels Protection of Groundwater 2.00E-02 P 1.00E-02 P 1 0.1 Trimethyl Phosphate 512-56-1 2.7E+01 c*1.1E+02 c*3.9E+00 c*8.6E-04 c* 1.00E-02 I 6.00E-02 I V 1 2.93E+02 Trimethylbenzene, 1,2,3-526-73-8 3.4E+02 ns 2.0E+03 ns 6.3E+01 n 2.6E+02 n 5.5E+01 n 8.1E-02 n 1.00E-02 I 6.00E-02 I V 1 2.19E+02 Trimethylbenzene, 1,2,4-95-63-6 3.0E+02 ns 1.8E+03 ns 6.3E+01 n 2.6E+02 n 5.6E+01 n 8.1E-02 n 1.00E-02 I 6.00E-02 I V 1 1.82E+02 Trimethylbenzene, 1,3,5-108-67-8 2.7E+02 ns 1.5E+03 ns 6.3E+01 n 2.6E+02 n 6.0E+01 n 8.7E-02 n 1.00E-02 X V 1 2.96E+01 Trimethylpentene, 2,4,4-25167-70-8 7.8E+02 ns 1.2E+04 ns 3.8E+01 n 1.3E-01 n 3.00E-02 I 1 0.019 Trinitrobenzene, 1,3,5-99-35-4 2.2E+03 n 3.2E+04 n 5.9E+02 n 2.1E+00 n 3.00E-02 I 5.00E-04 I 1 0.032 Trinitrotoluene, 2,4,6-118-96-7 2.1E+01 c**9.6E+01 c**2.5E+00 c**1.5E-02 c** 2.00E-02 P 1 0.1 Triphenylphosphine Oxide 791-28-6 1.3E+03 n 1.6E+04 n 3.6E+02 n 1.5E+00 n 2.00E-02 A 1 0.1 Tris(1,3-Dichloro-2-propyl) Phosphate 13674-87-8 1.3E+03 n 1.6E+04 n 3.6E+02 n 8.0E+00 n 1.00E-02 X 1 0.1 Tris(1-chloro-2-propyl)phosphate 13674-84-5 6.3E+02 n 8.2E+03 n 1.9E+02 n 6.5E-01 n 2.30E+00 C 6.60E-04 C V 1 4.67E+02 Tris(2,3-dibromopropyl)phosphate 126-72-7 2.8E-01 c 1.3E+00 c 4.3E-03 c 1.9E-02 c 6.8E-03 c 1.3E-04 c 2.00E-02 P 7.00E-03 P 1 0.1 Tris(2-chloroethyl)phosphate 115-96-8 2.7E+01 c*1.1E+02 c*3.8E+00 c*3.8E-03 c* 3.20E-03 P 1.00E-01 P 1 0.1 Tris(2-ethylhexyl)phosphate 78-42-2 1.7E+02 c*7.2E+02 c 2.4E+01 c*1.2E+02 c* 8.00E-04 P 1 Tungsten 7440-33-7 6.3E+01 n 9.3E+02 n 1.6E+01 n 2.4E+00 n 2.00E-04 A 4.00E-05 A 1 Uranium 7440-61-1 1.6E+01 n 2.3E+02 n 4.2E-02 n 1.8E-01 n 4.0E+00 n 3.0E+01 1.8E+00 n 1.4E+01 1.00E+00 C 2.90E-04 C M 1 0.1 Urethane 51-79-6 1.2E-01 c 2.3E+00 c 3.5E-03 c 4.2E-02 c 2.5E-02 c 5.6E-06 c 8.30E-03 P 9.00E-03 I 7.00E-06 P 0.026 Vanadium Pentoxide 1314-62-1 4.6E+02 c**2.0E+03 c**3.4E-04 c*1.5E-03 c*1.5E+02 n 5.04E-03 G 1.00E-04 A 0.026 Vanadium and Compounds 7440-62-2 3.9E+02 n 5.8E+03 n 1.0E-01 n 4.4E-01 n 8.6E+01 n 8.6E+01 n 1.00E-03 I V 1 Vernolate 1929-77-7 7.8E+01 n 1.2E+03 n 1.1E+01 n 8.9E-03 n 1.20E-03 O 1 0.1 Vinclozolin 50471-44-8 7.6E+01 n 9.8E+02 n 2.1E+01 n 1.6E-02 n 1.00E+00 H 2.00E-01 I V 1 2.75E+03 Vinyl Acetate 108-05-4 9.1E+02 n 3.8E+03 ns 2.1E+02 n 8.8E+02 n 4.1E+02 n 8.7E-02 n 1.50E-05 P 3.00E-03 I V 1 2.47E+03 Vinyl Bromide 593-60-2 2.6E-01 c*1.1E+00 c*1.9E-01 c*8.2E-01 c*3.7E-01 c*1.1E-04 c* 7.20E-01 I 4.40E-06 I 3.00E-03 I 5.11E-02 A V M 1 3.92E+03 Vinyl Chloride 75-01-4 5.9E-02 c 1.7E+00 c 1.7E-01 c 2.8E+00 c*1.9E-02 c 2.0E+00 6.5E-06 c 6.9E-04 3.00E-04 I 1 0.1 Warfarin 81-81-2 1.9E+01 n 2.5E+02 n 5.6E+00 n 5.9E-03 n 2.00E-01 G 1.00E-01 G V 1 3.88E+02 Xylene, m-108-38-3 5.5E+02 ns 2.4E+03 ns 1.0E+02 n 4.4E+02 n 1.9E+02 n 1.9E-01 n 2.00E-01 G 1.00E-01 G V 1 4.34E+02 Xylene, o-95-47-6 6.4E+02 ns 2.8E+03 ns 1.0E+02 n 4.4E+02 n 1.9E+02 n 1.9E-01 n 2.00E-01 G 1.00E-01 G V 1 3.90E+02 Xylene, p-106-42-3 5.6E+02 ns 2.4E+03 ns 1.0E+02 n 4.4E+02 n 1.9E+02 n 1.9E-01 n 2.00E-01 I 1.00E-01 I V 1 2.60E+02 Xylenes 1330-20-7 5.8E+02 ns 2.5E+03 ns 1.0E+02 n 4.4E+02 n 1.9E+02 n 1.0E+04 1.9E-01 n 9.9E+00 3.00E-04 I 1 Zinc Phosphide 1314-84-7 2.3E+01 n 3.5E+02 n 6.0E+00 n 3.00E-01 I 1 Zinc and Compounds 7440-66-6 2.3E+04 n 3.5E+05 nm 6.0E+03 n 3.7E+02 n 5.00E-02 I 1 0.1 Zineb 12122-67-7 3.2E+03 n 4.1E+04 n 9.9E+02 n 2.9E+00 n 8.00E-05 X 1 Zirconium 7440-67-7 6.3E+00 n 9.3E+01 n 1.6E+00 n 4.8E+00 n Page 12 of 12 PHOTO 1 | View of boring location B-1, looking east towards the southwest corner of the garage. Geotechnical boring B-4-30ft is visible to the left. PHOTO 2 | View of boring location B-3, looking south towards the north side of the closed car wash. PHOTO 3 | View of boring location B-2, looking east towards the waste oil AST and secondary containment, with the garage in the background. PHOTO 4 | View of boring location B-4, looking north towards Pump #1. PHOTO 5 | View of boring location B-5, looking north towards Pump #3. PHOTO 6 | View of boring location B-6, looking north towards Pump #5. PHOTO 7 | View of boring location B-7, looking north towards Pump #7. PHOTO 8 | View of boring location B-8, looking north towards B-5 and Pump #3 in background. PHOTO 9 | View of boring location B-9, looking north towards B-6 and Pump #5 in background. PHOTO 10 | View of boring location B-10, looking east towards diesel/ethanol free Pump #9 in background. PHOTO 11 | View of boring location B-11, looking west towards diesel/ethanol free Pump #10 in background. ANALYTICAL DATA APPENDIX B The analyses presented on this report were performed in accordance with the National Environmental Laboratory Accreditation Program (NELAP) unless noted in the comments, flags, or case narrative. If the report is to be used for regulatory compliance, it should be presented in its entirety, and not be altered. Client Service Contact: 801.262.7299 CMT Technical Services, Inc. Attn: Michael Sauerwein 2800 South Redwood Road West Valley City, UT 84119-2375 Work Order: 24L1006 Project: 23501 Maverik (Chevron), 1350 E 700 S, Clearfield-Limited Phase II ESA 12/26/2024 Approved By: Andrew Royer, Project Manager 9632 South 500 West Sandy, Utah 84070 Serving the Intermountain West since 1953 801.262.7299 Main 866.792.0093 Fax www.ChemtechFord.com Page 1 of 55 xx Chemtech-Ford Laboratories Serving the Intermountain West Since 1953 Certificate of Analysis 9632 South 500 West Sandy, UT 84070 O:(801) 262-7299 F: (866) 792-0093 www.ChemtechFord.com CMT Technical Services, Inc. Michael Sauerwein 2800 South Redwood Road West Valley City, UT 84119-2375 PO#: Receipt: Date Reported: Project Name: 12/11/24 17:10 @ 4.9 °C 12/26/2024 23501 Maverik (Chevron), 1350 E 700 S, Clearfield-Limited Phase II ESA Sample ID: B-1-17.5' Lab ID: 24L1006-01Matrix: Solid Flag(s)Units Analysis Date/Time Date Sampled: 12/10/24 10:02 Preparation Date/Time Sampled By: Michael Sauerwein Minimum Reporting Limit MethodResult Inorganic mg/kg dry 12/13/2412/13/24308EPA 1664BModNDOil & Grease (HEM) %12/12/2412/12/240.1 CTF800081.2Total Solids mg/kg dry 12/13/2412/13/24308EPA 1664BModNDTRPH (SGT-HEM) Metals mg/kg dry 12/18/2412/17/241.63 EPA 6020A/3050B5.11Arsenic, Total mg/kg dry 12/18/2412/17/249.76 EPA 6020A/3050B112Barium, Total mg/kg dry 12/18/2412/17/241.63 EPA 6020A/3050BNDCadmium, Total mg/kg dry 12/18/2412/17/243.25 EPA 6020A/3050B12.0Chromium, Total mg/kg dry 12/18/2412/17/241.95 EPA 6020A/3050B8.81Lead, Total mg/kg dry 12/16/2412/12/240.023 EPA 7471A0.024Mercury, Total mg/kg dry 12/18/2412/17/241.95 EPA 6020A/3050B3.92Selenium, Total mg/kg dry 12/18/2412/17/241.63 EPA 6020A/3050BNDSilver, Total Diesel Range mg/kg dry 12/17/2412/16/2462EPA 8015 C103Diesel Range Organics Volatile Organic Compounds mg/kg dry 12/18/2412/18/240.006 EPA 8260D/5030BND1,1,1,2-Tetrachloroethane mg/kg dry 12/18/2412/18/240.006 EPA 8260D/5030BND1,1,1-Trichloroethane mg/kg dry 12/18/2412/18/240.006 EPA 8260D/5030BND1,1,2,2-Tetrachloroethane mg/kg dry 12/18/2412/18/240.006 EPA 8260D/5030BND1,1,2-Trichloroethane mg/kg dry 12/18/2412/18/240.006 EPA 8260D/5030BND1,1,2-Trichlorotrifluoroethane mg/kg dry 12/18/2412/18/240.006 EPA 8260D/5030BND1,1-Dichloroethane mg/kg dry 12/18/2412/18/240.006 EPA 8260D/5030BND1,1-Dichloroethene mg/kg dry 12/18/2412/18/240.006 EPA 8260D/5030BND1,1-Dichloropropene mg/kg dry 12/18/2412/18/240.006 EPA 8260D/5030BND1,2,3-Trichlorobenzene mg/kg dry 12/18/2412/18/240.006 EPA 8260D/5030BND1,2,3-Trichloropropane mg/kg dry 12/18/2412/18/240.006 EPA 8260D/5030BND1,2,4-Trichlorobenzene mg/kg dry 12/18/2412/18/240.006 EPA 8260D/5030BND1,2,4-Trimethylbenzene mg/kg dry 12/18/2412/18/240.006 EPA 8260D/5030BND1,2-Dibromo-3-chloropropane mg/kg dry 12/18/2412/18/240.006 EPA 8260D/5030BND1,2-Dibromoethane (EDB) mg/kg dry 12/18/2412/18/240.006 EPA 8260D/5030BND1,2-Dichlorobenzene mg/kg dry 12/18/2412/18/240.006 EPA 8260D/5030BND1,2-Dichloroethane mg/kg dry 12/18/2412/18/240.006 EPA 8260D/5030BND1,2-Dichloropropane mg/kg dry 12/18/2412/18/240.006 EPA 8260D/5030BND1,3,5-Trimethylbenzene mg/kg dry 12/18/2412/18/240.006 EPA 8260D/5030BND1,3-Dichlorobenzene mg/kg dry 12/18/2412/18/240.006 EPA 8260D/5030BND1,3-Dichloropropane mg/kg dry 12/18/2412/18/240.006 EPA 8260D/5030BND1,4-Dichlorobenzene Project Name: 23501 Maverik (Chevron), 1350 E 700 S, Clearfield-CtF WO#: 24L1006 www.ChemtechFord.com Page 2 of 54Page 2 of 55 xx Chemtech-Ford Laboratories Serving the Intermountain West Since 1953 Certificate of Analysis 9632 South 500 West Sandy, UT 84070 O:(801) 262-7299 F: (866) 792-0093 www.ChemtechFord.com CMT Technical Services, Inc. Michael Sauerwein 2800 South Redwood Road West Valley City, UT 84119-2375 PO#: Receipt: Date Reported: Project Name: 12/11/24 17:10 @ 4.9 °C 12/26/2024 23501 Maverik (Chevron), 1350 E 700 S, Clearfield-Limited Phase II ESA Sample ID: B-1-17.5' (cont.) Lab ID: 24L1006-01Matrix: Solid Flag(s)Units Analysis Date/Time Date Sampled: 12/10/24 10:02 Preparation Date/Time Sampled By: Michael Sauerwein Minimum Reporting Limit MethodResult Volatile Organic Compounds (cont.) mg/kg dry 12/18/2412/18/240.006 EPA 8260D/5030BND2,2-Dichloropropane mg/kg dry 12/18/2412/18/240.006 EPA 8260D/5030BND2-Chlorotoluene mg/kg dry 12/18/2412/18/240.01 EPA 8260D/5030BND2-Nitropropane mg/kg dry 12/18/2412/18/240.006 EPA 8260D/5030BND4-Chlorotoluene mg/kg dry 12/18/2412/18/240.006 EPA 8260D/5030BNDp-Isopropyltoluene mg/kg dry 12/18/2412/18/240.12 EPA 8260D/5030BNDAcetone mg/kg dry 12/18/2412/18/240.002 EPA 8260D/5030B0.01Benzene mg/kg dry 12/18/2412/18/240.006 EPA 8260D/5030BNDBromobenzene mg/kg dry 12/18/2412/18/240.006 EPA 8260D/5030BNDBromochloromethane mg/kg dry 12/18/2412/18/240.006 EPA 8260D/5030BNDBromodichloromethane mg/kg dry 12/18/2412/18/240.006 EPA 8260D/5030BNDBromoform mg/kg dry 12/18/2412/18/240.01 EPA 8260D/5030BNDBromomethane mg/kg dry 12/18/2412/18/240.01 EPA 8260D/5030BNDCarbon Disulfide mg/kg dry 12/18/2412/18/240.006 EPA 8260D/5030BNDCarbon Tetrachloride mg/kg dry 12/18/2412/18/240.006 EPA 8260D/5030BNDChlorobenzene mg/kg dry 12/18/2412/18/240.006 EPA 8260D/5030BNDChloroethane mg/kg dry 12/18/2412/18/240.006 EPA 8260D/5030BNDChloroform mg/kg dry 12/18/2412/18/240.006 EPA 8260D/5030BNDChloromethane mg/kg dry 12/18/2412/18/240.006 EPA 8260D/5030BNDcis-1,2-Dichloroethene mg/kg dry 12/18/2412/18/240.006 EPA 8260D/5030BNDcis-1,3-Dichloropropene mg/kg dry 12/18/2412/18/240.06 EPA 8260D/5030BNDCyclohexanone mg/kg dry 12/18/2412/18/240.006 EPA 8260D/5030BNDDibromochloromethane mg/kg dry 12/18/2412/18/240.006 EPA 8260D/5030BNDDibromomethane mg/kg dry 12/18/2412/18/240.006 EPA 8260D/5030BNDDichlorodifluoromethane mg/kg dry 12/18/2412/18/240.01 EPA 8260D/5030BNDEthyl Acetate mg/kg dry 12/18/2412/18/240.006 EPA 8260D/5030BNDEthyl Ether mg/kg dry 12/18/2412/18/240.006 EPA 8260D/5030BNDEthylbenzene mg/kg dry 12/18/2412/18/240.006 EPA 8260D/5030BNDHexachlorobutadiene mg/kg dry 12/18/2412/18/240.12 EPA 8260D/5030BNDIsobutanol mg/kg dry 12/18/2412/18/240.006 EPA 8260D/5030BNDIsopropylbenzene mg/kg dry 12/18/2412/18/240.01 EPA 8260D/5030B0.01Methyl Ethyl Ketone mg/kg dry 12/18/2412/18/240.03 EPA 8260D/5030BNDMethyl Isobutyl Ketone mg/kg dry 12/18/2412/18/240.006 EPA 8260D/5030BNDMethylene Chloride mg/kg dry J-LOW-L12/18/2412/18/240.004 EPA 8260D/5030BNDMethyl-tert-butyl ether (MTBE) mg/kg dry 12/18/2412/18/240.006 EPA 8260D/5030BNDNaphthalene mg/kg dry J-LOW-L12/18/2412/18/240.31 EPA 8260D/5030B0.50n-Butyl Alcohol Project Name: 23501 Maverik (Chevron), 1350 E 700 S, Clearfield-CtF WO#: 24L1006 www.ChemtechFord.com Page 3 of 54Page 3 of 55 xx Chemtech-Ford Laboratories Serving the Intermountain West Since 1953 Certificate of Analysis 9632 South 500 West Sandy, UT 84070 O:(801) 262-7299 F: (866) 792-0093 www.ChemtechFord.com CMT Technical Services, Inc. Michael Sauerwein 2800 South Redwood Road West Valley City, UT 84119-2375 PO#: Receipt: Date Reported: Project Name: 12/11/24 17:10 @ 4.9 °C 12/26/2024 23501 Maverik (Chevron), 1350 E 700 S, Clearfield-Limited Phase II ESA Sample ID: B-1-17.5' (cont.) Lab ID: 24L1006-01Matrix: Solid Flag(s)Units Analysis Date/Time Date Sampled: 12/10/24 10:02 Preparation Date/Time Sampled By: Michael Sauerwein Minimum Reporting Limit MethodResult Volatile Organic Compounds (cont.) mg/kg dry 12/18/2412/18/240.006 EPA 8260D/5030BNDn-Butylbenzene mg/kg dry 12/18/2412/18/240.006 EPA 8260D/5030BNDn-Propyl Benzene mg/kg dry 12/18/2412/18/240.006 EPA 8260D/5030BNDPentachloroethane mg/kg dry 12/18/2412/18/240.006 EPA 8260D/5030BNDsec-Butyl Benzene mg/kg dry 12/18/2412/18/240.006 EPA 8260D/5030BNDStyrene mg/kg dry 12/18/2412/18/240.006 EPA 8260D/5030BNDtert-Butylbenzene mg/kg dry 12/18/2412/18/240.006 EPA 8260D/5030BNDTetrachloroethene mg/kg dry 12/18/2412/18/240.006 EPA 8260D/5030B0.02Toluene mg/kg dry 12/18/2412/18/240.006 EPA 8260D/5030BNDtrans-1,2-Dichloroethene mg/kg dry 12/18/2412/18/240.006 EPA 8260D/5030BNDtrans-1,3-Dichloropropene mg/kg dry 12/18/2412/18/240.006 EPA 8260D/5030BNDTrichloroethene mg/kg dry 12/18/2412/18/240.006 EPA 8260D/5030BNDTrichlorofluoromethane mg/kg dry 12/18/2412/18/240.005 EPA 8260D/5030BNDVinyl Chloride mg/kg dry 12/18/2412/18/240.02 EPA 8260D/5030B0.04Xylenes, total mg/kg dry 12/18/2412/18/240.06 EPA 8260D/5030B0.13Gasoline Range Organics Project Name: 23501 Maverik (Chevron), 1350 E 700 S, Clearfield-CtF WO#: 24L1006 www.ChemtechFord.com Page 4 of 54Page 4 of 55 xx Chemtech-Ford Laboratories Serving the Intermountain West Since 1953 Certificate of Analysis 9632 South 500 West Sandy, UT 84070 O:(801) 262-7299 F: (866) 792-0093 www.ChemtechFord.com CMT Technical Services, Inc. Michael Sauerwein 2800 South Redwood Road West Valley City, UT 84119-2375 PO#: Receipt: Date Reported: Project Name: 12/11/24 17:10 @ 4.9 °C 12/26/2024 23501 Maverik (Chevron), 1350 E 700 S, Clearfield-Limited Phase II ESA Sample ID: B-2-10' Lab ID: 24L1006-02Matrix: Solid Flag(s)Units Analysis Date/Time Date Sampled: 12/10/24 10:50 Preparation Date/Time Sampled By: Michael Sauerwein Minimum Reporting Limit MethodResult Inorganic mg/kg dry 12/13/2412/13/24303EPA 1664BModNDOil & Grease (HEM) %12/12/2412/12/240.1 CTF800082.5Total Solids mg/kg dry 12/13/2412/13/24303EPA 1664BModNDTRPH (SGT-HEM) Metals mg/kg dry 12/18/2412/17/241.62 EPA 6020A/3050B4.20Arsenic, Total mg/kg dry 12/18/2412/17/249.71 EPA 6020A/3050B118Barium, Total mg/kg dry 12/18/2412/17/241.62 EPA 6020A/3050BNDCadmium, Total mg/kg dry 12/18/2412/17/243.24 EPA 6020A/3050B12.2Chromium, Total mg/kg dry 12/18/2412/17/241.94 EPA 6020A/3050B9.17Lead, Total mg/kg dry 12/16/2412/12/240.025 EPA 7471ANDMercury, Total mg/kg dry 12/18/2412/17/241.94 EPA 6020A/3050B3.12Selenium, Total mg/kg dry 12/18/2412/17/241.62 EPA 6020A/3050BNDSilver, Total Diesel Range mg/kg dry 12/17/2412/16/2461EPA 8015 C71Diesel Range Organics Volatile Organic Compounds mg/kg dry 12/18/2412/18/240.006 EPA 8260D/5030BND1,1,1,2-Tetrachloroethane mg/kg dry 12/18/2412/18/240.006 EPA 8260D/5030BND1,1,1-Trichloroethane mg/kg dry 12/18/2412/18/240.006 EPA 8260D/5030BND1,1,2,2-Tetrachloroethane mg/kg dry 12/18/2412/18/240.006 EPA 8260D/5030BND1,1,2-Trichloroethane mg/kg dry 12/18/2412/18/240.006 EPA 8260D/5030BND1,1,2-Trichlorotrifluoroethane mg/kg dry 12/18/2412/18/240.006 EPA 8260D/5030BND1,1-Dichloroethane mg/kg dry 12/18/2412/18/240.006 EPA 8260D/5030BND1,1-Dichloroethene mg/kg dry 12/18/2412/18/240.006 EPA 8260D/5030BND1,1-Dichloropropene mg/kg dry 12/18/2412/18/240.006 EPA 8260D/5030BND1,2,3-Trichlorobenzene mg/kg dry 12/18/2412/18/240.006 EPA 8260D/5030BND1,2,3-Trichloropropane mg/kg dry 12/18/2412/18/240.006 EPA 8260D/5030BND1,2,4-Trichlorobenzene mg/kg dry 12/18/2412/18/240.006 EPA 8260D/5030BND1,2,4-Trimethylbenzene mg/kg dry 12/18/2412/18/240.006 EPA 8260D/5030BND1,2-Dibromo-3-chloropropane mg/kg dry 12/18/2412/18/240.006 EPA 8260D/5030BND1,2-Dibromoethane (EDB) mg/kg dry 12/18/2412/18/240.006 EPA 8260D/5030BND1,2-Dichlorobenzene mg/kg dry 12/18/2412/18/240.006 EPA 8260D/5030BND1,2-Dichloroethane mg/kg dry 12/18/2412/18/240.006 EPA 8260D/5030BND1,2-Dichloropropane mg/kg dry 12/18/2412/18/240.006 EPA 8260D/5030BND1,3,5-Trimethylbenzene mg/kg dry 12/18/2412/18/240.006 EPA 8260D/5030BND1,3-Dichlorobenzene mg/kg dry 12/18/2412/18/240.006 EPA 8260D/5030BND1,3-Dichloropropane mg/kg dry 12/18/2412/18/240.006 EPA 8260D/5030BND1,4-Dichlorobenzene Project Name: 23501 Maverik (Chevron), 1350 E 700 S, Clearfield-CtF WO#: 24L1006 www.ChemtechFord.com Page 5 of 54Page 5 of 55 xx Chemtech-Ford Laboratories Serving the Intermountain West Since 1953 Certificate of Analysis 9632 South 500 West Sandy, UT 84070 O:(801) 262-7299 F: (866) 792-0093 www.ChemtechFord.com CMT Technical Services, Inc. Michael Sauerwein 2800 South Redwood Road West Valley City, UT 84119-2375 PO#: Receipt: Date Reported: Project Name: 12/11/24 17:10 @ 4.9 °C 12/26/2024 23501 Maverik (Chevron), 1350 E 700 S, Clearfield-Limited Phase II ESA Sample ID: B-2-10' (cont.) Lab ID: 24L1006-02Matrix: Solid Flag(s)Units Analysis Date/Time Date Sampled: 12/10/24 10:50 Preparation Date/Time Sampled By: Michael Sauerwein Minimum Reporting Limit MethodResult Volatile Organic Compounds (cont.) mg/kg dry 12/18/2412/18/240.006 EPA 8260D/5030BND2,2-Dichloropropane mg/kg dry 12/18/2412/18/240.006 EPA 8260D/5030BND2-Chlorotoluene mg/kg dry 12/18/2412/18/240.01 EPA 8260D/5030BND2-Nitropropane mg/kg dry 12/18/2412/18/240.006 EPA 8260D/5030BND4-Chlorotoluene mg/kg dry 12/18/2412/18/240.006 EPA 8260D/5030BNDp-Isopropyltoluene mg/kg dry 12/18/2412/18/240.12 EPA 8260D/5030BNDAcetone mg/kg dry 12/18/2412/18/240.002 EPA 8260D/5030B0.03Benzene mg/kg dry 12/18/2412/18/240.006 EPA 8260D/5030BNDBromobenzene mg/kg dry 12/18/2412/18/240.006 EPA 8260D/5030BNDBromochloromethane mg/kg dry 12/18/2412/18/240.006 EPA 8260D/5030BNDBromodichloromethane mg/kg dry 12/18/2412/18/240.006 EPA 8260D/5030BNDBromoform mg/kg dry 12/18/2412/18/240.01 EPA 8260D/5030BNDBromomethane mg/kg dry 12/18/2412/18/240.01 EPA 8260D/5030BNDCarbon Disulfide mg/kg dry 12/18/2412/18/240.006 EPA 8260D/5030BNDCarbon Tetrachloride mg/kg dry 12/18/2412/18/240.006 EPA 8260D/5030BNDChlorobenzene mg/kg dry 12/18/2412/18/240.006 EPA 8260D/5030BNDChloroethane mg/kg dry 12/18/2412/18/240.006 EPA 8260D/5030BNDChloroform mg/kg dry 12/18/2412/18/240.006 EPA 8260D/5030BNDChloromethane mg/kg dry 12/18/2412/18/240.006 EPA 8260D/5030BNDcis-1,2-Dichloroethene mg/kg dry 12/18/2412/18/240.006 EPA 8260D/5030BNDcis-1,3-Dichloropropene mg/kg dry 12/18/2412/18/240.06 EPA 8260D/5030BNDCyclohexanone mg/kg dry 12/18/2412/18/240.006 EPA 8260D/5030BNDDibromochloromethane mg/kg dry 12/18/2412/18/240.006 EPA 8260D/5030BNDDibromomethane mg/kg dry 12/18/2412/18/240.006 EPA 8260D/5030BNDDichlorodifluoromethane mg/kg dry 12/18/2412/18/240.01 EPA 8260D/5030BNDEthyl Acetate mg/kg dry 12/18/2412/18/240.006 EPA 8260D/5030BNDEthyl Ether mg/kg dry 12/18/2412/18/240.006 EPA 8260D/5030B0.009Ethylbenzene mg/kg dry 12/18/2412/18/240.006 EPA 8260D/5030BNDHexachlorobutadiene mg/kg dry 12/18/2412/18/240.12 EPA 8260D/5030BNDIsobutanol mg/kg dry 12/18/2412/18/240.006 EPA 8260D/5030BNDIsopropylbenzene mg/kg dry 12/18/2412/18/240.01 EPA 8260D/5030B0.01Methyl Ethyl Ketone mg/kg dry 12/18/2412/18/240.03 EPA 8260D/5030BNDMethyl Isobutyl Ketone mg/kg dry 12/18/2412/18/240.006 EPA 8260D/5030BNDMethylene Chloride mg/kg dry J-LOW-L12/18/2412/18/240.004 EPA 8260D/5030BNDMethyl-tert-butyl ether (MTBE) mg/kg dry 12/18/2412/18/240.006 EPA 8260D/5030BNDNaphthalene mg/kg dry J-LOW-L12/18/2412/18/240.30 EPA 8260D/5030BNDn-Butyl Alcohol Project Name: 23501 Maverik (Chevron), 1350 E 700 S, Clearfield-CtF WO#: 24L1006 www.ChemtechFord.com Page 6 of 54Page 6 of 55 xx Chemtech-Ford Laboratories Serving the Intermountain West Since 1953 Certificate of Analysis 9632 South 500 West Sandy, UT 84070 O:(801) 262-7299 F: (866) 792-0093 www.ChemtechFord.com CMT Technical Services, Inc. Michael Sauerwein 2800 South Redwood Road West Valley City, UT 84119-2375 PO#: Receipt: Date Reported: Project Name: 12/11/24 17:10 @ 4.9 °C 12/26/2024 23501 Maverik (Chevron), 1350 E 700 S, Clearfield-Limited Phase II ESA Sample ID: B-2-10' (cont.) Lab ID: 24L1006-02Matrix: Solid Flag(s)Units Analysis Date/Time Date Sampled: 12/10/24 10:50 Preparation Date/Time Sampled By: Michael Sauerwein Minimum Reporting Limit MethodResult Volatile Organic Compounds (cont.) mg/kg dry 12/18/2412/18/240.006 EPA 8260D/5030BNDn-Butylbenzene mg/kg dry 12/18/2412/18/240.006 EPA 8260D/5030BNDn-Propyl Benzene mg/kg dry 12/18/2412/18/240.006 EPA 8260D/5030BNDPentachloroethane mg/kg dry 12/18/2412/18/240.006 EPA 8260D/5030BNDsec-Butyl Benzene mg/kg dry 12/18/2412/18/240.006 EPA 8260D/5030BNDStyrene mg/kg dry 12/18/2412/18/240.006 EPA 8260D/5030BNDtert-Butylbenzene mg/kg dry 12/18/2412/18/240.006 EPA 8260D/5030BNDTetrachloroethene mg/kg dry 12/18/2412/18/240.006 EPA 8260D/5030B0.07Toluene mg/kg dry 12/18/2412/18/240.006 EPA 8260D/5030BNDtrans-1,2-Dichloroethene mg/kg dry 12/18/2412/18/240.006 EPA 8260D/5030BNDtrans-1,3-Dichloropropene mg/kg dry 12/18/2412/18/240.006 EPA 8260D/5030BNDTrichloroethene mg/kg dry 12/18/2412/18/240.006 EPA 8260D/5030BNDTrichlorofluoromethane mg/kg dry 12/18/2412/18/240.005 EPA 8260D/5030BNDVinyl Chloride mg/kg dry 12/18/2412/18/240.02 EPA 8260D/5030B0.06Xylenes, total mg/kg dry 12/18/2412/18/240.06 EPA 8260D/5030B0.26Gasoline Range Organics Project Name: 23501 Maverik (Chevron), 1350 E 700 S, Clearfield-CtF WO#: 24L1006 www.ChemtechFord.com Page 7 of 54Page 7 of 55 xx Chemtech-Ford Laboratories Serving the Intermountain West Since 1953 Certificate of Analysis 9632 South 500 West Sandy, UT 84070 O:(801) 262-7299 F: (866) 792-0093 www.ChemtechFord.com CMT Technical Services, Inc. Michael Sauerwein 2800 South Redwood Road West Valley City, UT 84119-2375 PO#: Receipt: Date Reported: Project Name: 12/11/24 17:10 @ 4.9 °C 12/26/2024 23501 Maverik (Chevron), 1350 E 700 S, Clearfield-Limited Phase II ESA Sample ID: B-3-8.5' Lab ID: 24L1006-03Matrix: Solid Flag(s)Units Analysis Date/Time Date Sampled: 12/10/24 12:00 Preparation Date/Time Sampled By: Michael Sauerwein Minimum Reporting Limit MethodResult Inorganic mg/kg dry 12/13/2412/13/24291EPA 1664BModNDOil & Grease (HEM) %12/12/2412/12/240.1 CTF800085.9Total Solids mg/kg dry 12/13/2412/13/24291EPA 1664BModNDTRPH (SGT-HEM) Metals mg/kg dry 12/18/2412/17/242.17 EPA 6020A/3050B5.70Arsenic, Total mg/kg dry 12/18/2412/17/2413.0 EPA 6020A/3050B116Barium, Total mg/kg dry 12/18/2412/17/242.17 EPA 6020A/3050BNDCadmium, Total mg/kg dry 12/18/2412/17/244.34 EPA 6020A/3050B9.96Chromium, Total mg/kg dry 12/18/2412/17/242.60 EPA 6020A/3050B20.0Lead, Total mg/kg dry 12/16/2412/12/240.029 EPA 7471ANDMercury, Total mg/kg dry 12/18/2412/17/242.60 EPA 6020A/3050B3.43Selenium, Total mg/kg dry 12/18/2412/17/242.17 EPA 6020A/3050BNDSilver, Total Diesel Range mg/kg dry 12/17/2412/16/2458EPA 8015 CNDDiesel Range Organics Volatile Organic Compounds mg/kg dry 12/19/2412/19/240.006 EPA 8260D/5030BND1,1,1,2-Tetrachloroethane mg/kg dry 12/19/2412/19/240.006 EPA 8260D/5030BND1,1,1-Trichloroethane mg/kg dry 12/19/2412/19/240.006 EPA 8260D/5030BND1,1,2,2-Tetrachloroethane mg/kg dry 12/19/2412/19/240.006 EPA 8260D/5030BND1,1,2-Trichloroethane mg/kg dry 12/19/2412/19/240.006 EPA 8260D/5030BND1,1,2-Trichlorotrifluoroethane mg/kg dry 12/19/2412/19/240.006 EPA 8260D/5030BND1,1-Dichloroethane mg/kg dry 12/19/2412/19/240.006 EPA 8260D/5030BND1,1-Dichloroethene mg/kg dry 12/19/2412/19/240.006 EPA 8260D/5030BND1,1-Dichloropropene mg/kg dry 12/19/2412/19/240.006 EPA 8260D/5030BND1,2,3-Trichlorobenzene mg/kg dry 12/19/2412/19/240.006 EPA 8260D/5030BND1,2,3-Trichloropropane mg/kg dry 12/19/2412/19/240.006 EPA 8260D/5030BND1,2,4-Trichlorobenzene mg/kg dry 12/19/2412/19/240.006 EPA 8260D/5030BND1,2,4-Trimethylbenzene mg/kg dry 12/19/2412/19/240.006 EPA 8260D/5030BND1,2-Dibromo-3-chloropropane mg/kg dry 12/19/2412/19/240.006 EPA 8260D/5030BND1,2-Dibromoethane (EDB) mg/kg dry 12/19/2412/19/240.006 EPA 8260D/5030BND1,2-Dichlorobenzene mg/kg dry 12/19/2412/19/240.006 EPA 8260D/5030BND1,2-Dichloroethane mg/kg dry 12/19/2412/19/240.006 EPA 8260D/5030BND1,2-Dichloropropane mg/kg dry 12/19/2412/19/240.006 EPA 8260D/5030BND1,3,5-Trimethylbenzene mg/kg dry 12/19/2412/19/240.006 EPA 8260D/5030BND1,3-Dichlorobenzene mg/kg dry 12/19/2412/19/240.006 EPA 8260D/5030BND1,3-Dichloropropane mg/kg dry 12/19/2412/19/240.006 EPA 8260D/5030BND1,4-Dichlorobenzene Project Name: 23501 Maverik (Chevron), 1350 E 700 S, Clearfield-CtF WO#: 24L1006 www.ChemtechFord.com Page 8 of 54Page 8 of 55 xx Chemtech-Ford Laboratories Serving the Intermountain West Since 1953 Certificate of Analysis 9632 South 500 West Sandy, UT 84070 O:(801) 262-7299 F: (866) 792-0093 www.ChemtechFord.com CMT Technical Services, Inc. Michael Sauerwein 2800 South Redwood Road West Valley City, UT 84119-2375 PO#: Receipt: Date Reported: Project Name: 12/11/24 17:10 @ 4.9 °C 12/26/2024 23501 Maverik (Chevron), 1350 E 700 S, Clearfield-Limited Phase II ESA Sample ID: B-3-8.5' (cont.) Lab ID: 24L1006-03Matrix: Solid Flag(s)Units Analysis Date/Time Date Sampled: 12/10/24 12:00 Preparation Date/Time Sampled By: Michael Sauerwein Minimum Reporting Limit MethodResult Volatile Organic Compounds (cont.) mg/kg dry 12/19/2412/19/240.006 EPA 8260D/5030BND2,2-Dichloropropane mg/kg dry 12/19/2412/19/240.006 EPA 8260D/5030BND2-Chlorotoluene mg/kg dry 12/19/2412/19/240.01 EPA 8260D/5030BND2-Nitropropane mg/kg dry 12/19/2412/19/240.006 EPA 8260D/5030BND4-Chlorotoluene mg/kg dry 12/19/2412/19/240.006 EPA 8260D/5030BNDp-Isopropyltoluene mg/kg dry 12/19/2412/19/240.12 EPA 8260D/5030BNDAcetone mg/kg dry 12/19/2412/19/240.002 EPA 8260D/5030B0.01Benzene mg/kg dry 12/19/2412/19/240.006 EPA 8260D/5030BNDBromobenzene mg/kg dry 12/19/2412/19/240.006 EPA 8260D/5030BNDBromochloromethane mg/kg dry 12/19/2412/19/240.006 EPA 8260D/5030BNDBromodichloromethane mg/kg dry 12/19/2412/19/240.006 EPA 8260D/5030BNDBromoform mg/kg dry 12/19/2412/19/240.01 EPA 8260D/5030BNDBromomethane mg/kg dry 12/19/2412/19/240.01 EPA 8260D/5030BNDCarbon Disulfide mg/kg dry 12/19/2412/19/240.006 EPA 8260D/5030BNDCarbon Tetrachloride mg/kg dry 12/19/2412/19/240.006 EPA 8260D/5030BNDChlorobenzene mg/kg dry 12/19/2412/19/240.006 EPA 8260D/5030BNDChloroethane mg/kg dry 12/19/2412/19/240.006 EPA 8260D/5030BNDChloroform mg/kg dry 12/19/2412/19/240.006 EPA 8260D/5030BNDChloromethane mg/kg dry 12/19/2412/19/240.006 EPA 8260D/5030BNDcis-1,2-Dichloroethene mg/kg dry 12/19/2412/19/240.006 EPA 8260D/5030BNDcis-1,3-Dichloropropene mg/kg dry 12/19/2412/19/240.06 EPA 8260D/5030BNDCyclohexanone mg/kg dry 12/19/2412/19/240.006 EPA 8260D/5030BNDDibromochloromethane mg/kg dry 12/19/2412/19/240.006 EPA 8260D/5030BNDDibromomethane mg/kg dry 12/19/2412/19/240.006 EPA 8260D/5030BNDDichlorodifluoromethane mg/kg dry 12/19/2412/19/240.01 EPA 8260D/5030BNDEthyl Acetate mg/kg dry 12/19/2412/19/240.006 EPA 8260D/5030BNDEthyl Ether mg/kg dry 12/19/2412/19/240.006 EPA 8260D/5030BNDEthylbenzene mg/kg dry 12/19/2412/19/240.006 EPA 8260D/5030BNDHexachlorobutadiene mg/kg dry 12/19/2412/19/240.12 EPA 8260D/5030BNDIsobutanol mg/kg dry 12/19/2412/19/240.006 EPA 8260D/5030BNDIsopropylbenzene mg/kg dry 12/19/2412/19/240.01 EPA 8260D/5030B0.02Methyl Ethyl Ketone mg/kg dry 12/19/2412/19/240.03 EPA 8260D/5030BNDMethyl Isobutyl Ketone mg/kg dry 12/19/2412/19/240.006 EPA 8260D/5030BNDMethylene Chloride mg/kg dry 12/19/2412/19/240.004 EPA 8260D/5030BNDMethyl-tert-butyl ether (MTBE) mg/kg dry 12/19/2412/19/240.006 EPA 8260D/5030BNDNaphthalene mg/kg dry 12/19/2412/19/240.31 EPA 8260D/5030BNDn-Butyl Alcohol Project Name: 23501 Maverik (Chevron), 1350 E 700 S, Clearfield-CtF WO#: 24L1006 www.ChemtechFord.com Page 9 of 54Page 9 of 55 xx Chemtech-Ford Laboratories Serving the Intermountain West Since 1953 Certificate of Analysis 9632 South 500 West Sandy, UT 84070 O:(801) 262-7299 F: (866) 792-0093 www.ChemtechFord.com CMT Technical Services, Inc. Michael Sauerwein 2800 South Redwood Road West Valley City, UT 84119-2375 PO#: Receipt: Date Reported: Project Name: 12/11/24 17:10 @ 4.9 °C 12/26/2024 23501 Maverik (Chevron), 1350 E 700 S, Clearfield-Limited Phase II ESA Sample ID: B-3-8.5' (cont.) Lab ID: 24L1006-03Matrix: Solid Flag(s)Units Analysis Date/Time Date Sampled: 12/10/24 12:00 Preparation Date/Time Sampled By: Michael Sauerwein Minimum Reporting Limit MethodResult Volatile Organic Compounds (cont.) mg/kg dry 12/19/2412/19/240.006 EPA 8260D/5030BNDn-Butylbenzene mg/kg dry 12/19/2412/19/240.006 EPA 8260D/5030BNDn-Propyl Benzene mg/kg dry 12/19/2412/19/240.006 EPA 8260D/5030BNDPentachloroethane mg/kg dry 12/19/2412/19/240.006 EPA 8260D/5030BNDsec-Butyl Benzene mg/kg dry 12/19/2412/19/240.006 EPA 8260D/5030BNDStyrene mg/kg dry 12/19/2412/19/240.006 EPA 8260D/5030BNDtert-Butylbenzene mg/kg dry 12/19/2412/19/240.006 EPA 8260D/5030BNDTetrachloroethene mg/kg dry 12/19/2412/19/240.006 EPA 8260D/5030B0.02Toluene mg/kg dry 12/19/2412/19/240.006 EPA 8260D/5030BNDtrans-1,2-Dichloroethene mg/kg dry 12/19/2412/19/240.006 EPA 8260D/5030BNDtrans-1,3-Dichloropropene mg/kg dry 12/19/2412/19/240.006 EPA 8260D/5030BNDTrichloroethene mg/kg dry 12/19/2412/19/240.006 EPA 8260D/5030BNDTrichlorofluoromethane mg/kg dry 12/19/2412/19/240.005 EPA 8260D/5030BNDVinyl Chloride mg/kg dry 12/19/2412/19/240.02 EPA 8260D/5030B0.02Xylenes, total mg/kg dry 12/19/2412/19/240.06 EPA 8260D/5030B0.18Gasoline Range Organics Project Name: 23501 Maverik (Chevron), 1350 E 700 S, Clearfield-CtF WO#: 24L1006 www.ChemtechFord.com Page 10 of 54Page 10 of 55 xx Chemtech-Ford Laboratories Serving the Intermountain West Since 1953 Certificate of Analysis 9632 South 500 West Sandy, UT 84070 O:(801) 262-7299 F: (866) 792-0093 www.ChemtechFord.com CMT Technical Services, Inc. Michael Sauerwein 2800 South Redwood Road West Valley City, UT 84119-2375 PO#: Receipt: Date Reported: Project Name: 12/11/24 17:10 @ 4.9 °C 12/26/2024 23501 Maverik (Chevron), 1350 E 700 S, Clearfield-Limited Phase II ESA Sample ID: B-4-8' Lab ID: 24L1006-04Matrix: Solid Flag(s)Units Analysis Date/Time Date Sampled: 12/10/24 12:47 Preparation Date/Time Sampled By: Michael Sauerwein Minimum Reporting Limit MethodResult Inorganic %12/12/2412/12/240.1 CTF800086.9Total Solids Diesel Range mg/kg dry 12/17/2412/16/2458EPA 8015 CNDDiesel Range Organics Volatile Organic Compounds mg/kg dry 12/19/2412/19/240.006 EPA 8260D/5030BND1,1,1,2-Tetrachloroethane mg/kg dry 12/19/2412/19/240.006 EPA 8260D/5030BND1,1,1-Trichloroethane mg/kg dry 12/19/2412/19/240.006 EPA 8260D/5030BND1,1,2,2-Tetrachloroethane mg/kg dry 12/19/2412/19/240.006 EPA 8260D/5030BND1,1,2-Trichloroethane mg/kg dry 12/19/2412/19/240.006 EPA 8260D/5030BND1,1,2-Trichlorotrifluoroethane mg/kg dry 12/19/2412/19/240.006 EPA 8260D/5030BND1,1-Dichloroethane mg/kg dry 12/19/2412/19/240.006 EPA 8260D/5030BND1,1-Dichloroethene mg/kg dry 12/19/2412/19/240.006 EPA 8260D/5030BND1,1-Dichloropropene mg/kg dry 12/19/2412/19/240.006 EPA 8260D/5030BND1,2,3-Trichlorobenzene mg/kg dry 12/19/2412/19/240.006 EPA 8260D/5030BND1,2,3-Trichloropropane mg/kg dry 12/19/2412/19/240.006 EPA 8260D/5030BND1,2,4-Trichlorobenzene mg/kg dry 12/19/2412/19/240.006 EPA 8260D/5030B0.021,2,4-Trimethylbenzene mg/kg dry 12/19/2412/19/240.006 EPA 8260D/5030BND1,2-Dibromo-3-chloropropane mg/kg dry 12/19/2412/19/240.006 EPA 8260D/5030BND1,2-Dibromoethane (EDB) mg/kg dry 12/19/2412/19/240.006 EPA 8260D/5030BND1,2-Dichlorobenzene mg/kg dry 12/19/2412/19/240.006 EPA 8260D/5030BND1,2-Dichloroethane mg/kg dry 12/19/2412/19/240.006 EPA 8260D/5030BND1,2-Dichloropropane mg/kg dry 12/19/2412/19/240.006 EPA 8260D/5030B0.011,3,5-Trimethylbenzene mg/kg dry 12/19/2412/19/240.006 EPA 8260D/5030BND1,3-Dichlorobenzene mg/kg dry 12/19/2412/19/240.006 EPA 8260D/5030BND1,3-Dichloropropane mg/kg dry 12/19/2412/19/240.006 EPA 8260D/5030BND1,4-Dichlorobenzene mg/kg dry 12/19/2412/19/240.006 EPA 8260D/5030BND2,2-Dichloropropane mg/kg dry 12/19/2412/19/240.006 EPA 8260D/5030BND2-Chlorotoluene mg/kg dry 12/19/2412/19/240.01 EPA 8260D/5030BND2-Nitropropane mg/kg dry 12/19/2412/19/240.006 EPA 8260D/5030BND4-Chlorotoluene mg/kg dry 12/19/2412/19/240.006 EPA 8260D/5030BNDp-Isopropyltoluene mg/kg dry 12/19/2412/19/240.12 EPA 8260D/5030BNDAcetone mg/kg dry 12/19/2412/19/240.002 EPA 8260D/5030B0.003Benzene mg/kg dry 12/19/2412/19/240.006 EPA 8260D/5030BNDBromobenzene mg/kg dry 12/19/2412/19/240.006 EPA 8260D/5030BNDBromochloromethane mg/kg dry 12/19/2412/19/240.006 EPA 8260D/5030BNDBromodichloromethane mg/kg dry 12/19/2412/19/240.006 EPA 8260D/5030BNDBromoform Project Name: 23501 Maverik (Chevron), 1350 E 700 S, Clearfield-CtF WO#: 24L1006 www.ChemtechFord.com Page 11 of 54Page 11 of 55 xx Chemtech-Ford Laboratories Serving the Intermountain West Since 1953 Certificate of Analysis 9632 South 500 West Sandy, UT 84070 O:(801) 262-7299 F: (866) 792-0093 www.ChemtechFord.com CMT Technical Services, Inc. Michael Sauerwein 2800 South Redwood Road West Valley City, UT 84119-2375 PO#: Receipt: Date Reported: Project Name: 12/11/24 17:10 @ 4.9 °C 12/26/2024 23501 Maverik (Chevron), 1350 E 700 S, Clearfield-Limited Phase II ESA Sample ID: B-4-8' (cont.) Lab ID: 24L1006-04Matrix: Solid Flag(s)Units Analysis Date/Time Date Sampled: 12/10/24 12:47 Preparation Date/Time Sampled By: Michael Sauerwein Minimum Reporting Limit MethodResult Volatile Organic Compounds (cont.) mg/kg dry 12/19/2412/19/240.01 EPA 8260D/5030BNDBromomethane mg/kg dry 12/19/2412/19/240.01 EPA 8260D/5030BNDCarbon Disulfide mg/kg dry 12/19/2412/19/240.006 EPA 8260D/5030BNDCarbon Tetrachloride mg/kg dry 12/19/2412/19/240.006 EPA 8260D/5030BNDChlorobenzene mg/kg dry 12/19/2412/19/240.006 EPA 8260D/5030BNDChloroethane mg/kg dry 12/19/2412/19/240.006 EPA 8260D/5030BNDChloroform mg/kg dry 12/19/2412/19/240.006 EPA 8260D/5030BNDChloromethane mg/kg dry 12/19/2412/19/240.006 EPA 8260D/5030BNDcis-1,2-Dichloroethene mg/kg dry 12/19/2412/19/240.006 EPA 8260D/5030BNDcis-1,3-Dichloropropene mg/kg dry 12/19/2412/19/240.06 EPA 8260D/5030BNDCyclohexanone mg/kg dry 12/19/2412/19/240.006 EPA 8260D/5030BNDDibromochloromethane mg/kg dry 12/19/2412/19/240.006 EPA 8260D/5030BNDDibromomethane mg/kg dry 12/19/2412/19/240.006 EPA 8260D/5030BNDDichlorodifluoromethane mg/kg dry 12/19/2412/19/240.01 EPA 8260D/5030BNDEthyl Acetate mg/kg dry 12/19/2412/19/240.006 EPA 8260D/5030BNDEthyl Ether mg/kg dry 12/19/2412/19/240.006 EPA 8260D/5030B0.01Ethylbenzene mg/kg dry 12/19/2412/19/240.006 EPA 8260D/5030BNDHexachlorobutadiene mg/kg dry 12/19/2412/19/240.12 EPA 8260D/5030BNDIsobutanol mg/kg dry 12/19/2412/19/240.006 EPA 8260D/5030BNDIsopropylbenzene mg/kg dry 12/19/2412/19/240.01 EPA 8260D/5030BNDMethyl Ethyl Ketone mg/kg dry 12/19/2412/19/240.03 EPA 8260D/5030BNDMethyl Isobutyl Ketone mg/kg dry 12/19/2412/19/240.006 EPA 8260D/5030BNDMethylene Chloride mg/kg dry 12/19/2412/19/240.004 EPA 8260D/5030BNDMethyl-tert-butyl ether (MTBE) mg/kg dry 12/19/2412/19/240.006 EPA 8260D/5030B0.006Naphthalene mg/kg dry 12/19/2412/19/240.30 EPA 8260D/5030BNDn-Butyl Alcohol mg/kg dry 12/19/2412/19/240.006 EPA 8260D/5030BNDn-Butylbenzene mg/kg dry 12/19/2412/19/240.006 EPA 8260D/5030BNDn-Propyl Benzene mg/kg dry 12/19/2412/19/240.006 EPA 8260D/5030BNDPentachloroethane mg/kg dry 12/19/2412/19/240.006 EPA 8260D/5030BNDsec-Butyl Benzene mg/kg dry 12/19/2412/19/240.006 EPA 8260D/5030BNDStyrene mg/kg dry 12/19/2412/19/240.006 EPA 8260D/5030BNDtert-Butylbenzene mg/kg dry 12/19/2412/19/240.006 EPA 8260D/5030BNDTetrachloroethene mg/kg dry 12/19/2412/19/240.006 EPA 8260D/5030B0.02Toluene mg/kg dry 12/19/2412/19/240.006 EPA 8260D/5030BNDtrans-1,2-Dichloroethene mg/kg dry 12/19/2412/19/240.006 EPA 8260D/5030BNDtrans-1,3-Dichloropropene mg/kg dry 12/19/2412/19/240.006 EPA 8260D/5030BNDTrichloroethene Project Name: 23501 Maverik (Chevron), 1350 E 700 S, Clearfield-CtF WO#: 24L1006 www.ChemtechFord.com Page 12 of 54Page 12 of 55 xx Chemtech-Ford Laboratories Serving the Intermountain West Since 1953 Certificate of Analysis 9632 South 500 West Sandy, UT 84070 O:(801) 262-7299 F: (866) 792-0093 www.ChemtechFord.com CMT Technical Services, Inc. Michael Sauerwein 2800 South Redwood Road West Valley City, UT 84119-2375 PO#: Receipt: Date Reported: Project Name: 12/11/24 17:10 @ 4.9 °C 12/26/2024 23501 Maverik (Chevron), 1350 E 700 S, Clearfield-Limited Phase II ESA Sample ID: B-4-8' (cont.) Lab ID: 24L1006-04Matrix: Solid Flag(s)Units Analysis Date/Time Date Sampled: 12/10/24 12:47 Preparation Date/Time Sampled By: Michael Sauerwein Minimum Reporting Limit MethodResult Volatile Organic Compounds (cont.) mg/kg dry 12/19/2412/19/240.006 EPA 8260D/5030BNDTrichlorofluoromethane mg/kg dry 12/19/2412/19/240.005 EPA 8260D/5030BNDVinyl Chloride mg/kg dry 12/19/2412/19/240.02 EPA 8260D/5030B0.10Xylenes, total mg/kg dry 12/19/2412/19/240.06 EPA 8260D/5030B0.35Gasoline Range Organics Project Name: 23501 Maverik (Chevron), 1350 E 700 S, Clearfield-CtF WO#: 24L1006 www.ChemtechFord.com Page 13 of 54Page 13 of 55 xx Chemtech-Ford Laboratories Serving the Intermountain West Since 1953 Certificate of Analysis 9632 South 500 West Sandy, UT 84070 O:(801) 262-7299 F: (866) 792-0093 www.ChemtechFord.com CMT Technical Services, Inc. Michael Sauerwein 2800 South Redwood Road West Valley City, UT 84119-2375 PO#: Receipt: Date Reported: Project Name: 12/11/24 17:10 @ 4.9 °C 12/26/2024 23501 Maverik (Chevron), 1350 E 700 S, Clearfield-Limited Phase II ESA Sample ID: B-5-8' Lab ID: 24L1006-05Matrix: Solid Flag(s)Units Analysis Date/Time Date Sampled: 12/10/24 13:32 Preparation Date/Time Sampled By: Michael Sauerwein Minimum Reporting Limit MethodResult Inorganic %12/12/2412/12/240.1 CTF800089.7Total Solids Diesel Range mg/kg dry 12/18/2412/18/2456EPA 8015 CNDDiesel Range Organics Volatile Organic Compounds mg/kg dry 12/19/2412/19/240.005 EPA 8260D/5030BND1,1,1,2-Tetrachloroethane mg/kg dry 12/19/2412/19/240.005 EPA 8260D/5030BND1,1,1-Trichloroethane mg/kg dry 12/19/2412/19/240.005 EPA 8260D/5030BND1,1,2,2-Tetrachloroethane mg/kg dry 12/19/2412/19/240.005 EPA 8260D/5030BND1,1,2-Trichloroethane mg/kg dry 12/19/2412/19/240.005 EPA 8260D/5030BND1,1,2-Trichlorotrifluoroethane mg/kg dry 12/19/2412/19/240.005 EPA 8260D/5030BND1,1-Dichloroethane mg/kg dry 12/19/2412/19/240.005 EPA 8260D/5030BND1,1-Dichloroethene mg/kg dry 12/19/2412/19/240.005 EPA 8260D/5030BND1,1-Dichloropropene mg/kg dry 12/19/2412/19/240.005 EPA 8260D/5030BND1,2,3-Trichlorobenzene mg/kg dry 12/19/2412/19/240.005 EPA 8260D/5030BND1,2,3-Trichloropropane mg/kg dry 12/19/2412/19/240.005 EPA 8260D/5030BND1,2,4-Trichlorobenzene mg/kg dry 12/19/2412/19/240.005 EPA 8260D/5030B0.011,2,4-Trimethylbenzene mg/kg dry 12/19/2412/19/240.005 EPA 8260D/5030BND1,2-Dibromo-3-chloropropane mg/kg dry 12/19/2412/19/240.005 EPA 8260D/5030BND1,2-Dibromoethane (EDB) mg/kg dry 12/19/2412/19/240.005 EPA 8260D/5030BND1,2-Dichlorobenzene mg/kg dry 12/19/2412/19/240.005 EPA 8260D/5030BND1,2-Dichloroethane mg/kg dry 12/19/2412/19/240.005 EPA 8260D/5030BND1,2-Dichloropropane mg/kg dry 12/19/2412/19/240.005 EPA 8260D/5030B0.0061,3,5-Trimethylbenzene mg/kg dry 12/19/2412/19/240.005 EPA 8260D/5030BND1,3-Dichlorobenzene mg/kg dry 12/19/2412/19/240.005 EPA 8260D/5030BND1,3-Dichloropropane mg/kg dry 12/19/2412/19/240.005 EPA 8260D/5030BND1,4-Dichlorobenzene mg/kg dry 12/19/2412/19/240.005 EPA 8260D/5030BND2,2-Dichloropropane mg/kg dry 12/19/2412/19/240.005 EPA 8260D/5030BND2-Chlorotoluene mg/kg dry 12/19/2412/19/240.01 EPA 8260D/5030BND2-Nitropropane mg/kg dry 12/19/2412/19/240.005 EPA 8260D/5030BND4-Chlorotoluene mg/kg dry 12/19/2412/19/240.005 EPA 8260D/5030BNDp-Isopropyltoluene mg/kg dry 12/19/2412/19/240.11 EPA 8260D/5030BNDAcetone mg/kg dry 12/19/2412/19/240.002 EPA 8260D/5030BNDBenzene mg/kg dry 12/19/2412/19/240.005 EPA 8260D/5030BNDBromobenzene mg/kg dry 12/19/2412/19/240.005 EPA 8260D/5030BNDBromochloromethane mg/kg dry 12/19/2412/19/240.005 EPA 8260D/5030BNDBromodichloromethane mg/kg dry 12/19/2412/19/240.005 EPA 8260D/5030BNDBromoform Project Name: 23501 Maverik (Chevron), 1350 E 700 S, Clearfield-CtF WO#: 24L1006 www.ChemtechFord.com Page 14 of 54Page 14 of 55 xx Chemtech-Ford Laboratories Serving the Intermountain West Since 1953 Certificate of Analysis 9632 South 500 West Sandy, UT 84070 O:(801) 262-7299 F: (866) 792-0093 www.ChemtechFord.com CMT Technical Services, Inc. Michael Sauerwein 2800 South Redwood Road West Valley City, UT 84119-2375 PO#: Receipt: Date Reported: Project Name: 12/11/24 17:10 @ 4.9 °C 12/26/2024 23501 Maverik (Chevron), 1350 E 700 S, Clearfield-Limited Phase II ESA Sample ID: B-5-8' (cont.) Lab ID: 24L1006-05Matrix: Solid Flag(s)Units Analysis Date/Time Date Sampled: 12/10/24 13:32 Preparation Date/Time Sampled By: Michael Sauerwein Minimum Reporting Limit MethodResult Volatile Organic Compounds (cont.) mg/kg dry 12/19/2412/19/240.01 EPA 8260D/5030BNDBromomethane mg/kg dry 12/19/2412/19/240.01 EPA 8260D/5030BNDCarbon Disulfide mg/kg dry 12/19/2412/19/240.005 EPA 8260D/5030BNDCarbon Tetrachloride mg/kg dry 12/19/2412/19/240.005 EPA 8260D/5030BNDChlorobenzene mg/kg dry 12/19/2412/19/240.005 EPA 8260D/5030BNDChloroethane mg/kg dry 12/19/2412/19/240.005 EPA 8260D/5030BNDChloroform mg/kg dry 12/19/2412/19/240.005 EPA 8260D/5030BNDChloromethane mg/kg dry 12/19/2412/19/240.005 EPA 8260D/5030BNDcis-1,2-Dichloroethene mg/kg dry 12/19/2412/19/240.005 EPA 8260D/5030BNDcis-1,3-Dichloropropene mg/kg dry 12/19/2412/19/240.05 EPA 8260D/5030BNDCyclohexanone mg/kg dry 12/19/2412/19/240.005 EPA 8260D/5030BNDDibromochloromethane mg/kg dry 12/19/2412/19/240.005 EPA 8260D/5030BNDDibromomethane mg/kg dry 12/19/2412/19/240.005 EPA 8260D/5030BNDDichlorodifluoromethane mg/kg dry 12/19/2412/19/240.01 EPA 8260D/5030BNDEthyl Acetate mg/kg dry 12/19/2412/19/240.005 EPA 8260D/5030BNDEthyl Ether mg/kg dry 12/19/2412/19/240.005 EPA 8260D/5030B0.006Ethylbenzene mg/kg dry 12/19/2412/19/240.005 EPA 8260D/5030BNDHexachlorobutadiene mg/kg dry 12/19/2412/19/240.11 EPA 8260D/5030BNDIsobutanol mg/kg dry 12/19/2412/19/240.005 EPA 8260D/5030BNDIsopropylbenzene mg/kg dry 12/19/2412/19/240.01 EPA 8260D/5030BNDMethyl Ethyl Ketone mg/kg dry 12/19/2412/19/240.03 EPA 8260D/5030BNDMethyl Isobutyl Ketone mg/kg dry 12/19/2412/19/240.005 EPA 8260D/5030BNDMethylene Chloride mg/kg dry 12/19/2412/19/240.003 EPA 8260D/5030BNDMethyl-tert-butyl ether (MTBE) mg/kg dry 12/19/2412/19/240.005 EPA 8260D/5030BNDNaphthalene mg/kg dry 12/19/2412/19/240.27 EPA 8260D/5030BNDn-Butyl Alcohol mg/kg dry 12/19/2412/19/240.005 EPA 8260D/5030BNDn-Butylbenzene mg/kg dry 12/19/2412/19/240.005 EPA 8260D/5030BNDn-Propyl Benzene mg/kg dry 12/19/2412/19/240.005 EPA 8260D/5030BNDPentachloroethane mg/kg dry 12/19/2412/19/240.005 EPA 8260D/5030BNDsec-Butyl Benzene mg/kg dry 12/19/2412/19/240.005 EPA 8260D/5030BNDStyrene mg/kg dry 12/19/2412/19/240.005 EPA 8260D/5030BNDtert-Butylbenzene mg/kg dry 12/19/2412/19/240.005 EPA 8260D/5030BNDTetrachloroethene mg/kg dry 12/19/2412/19/240.005 EPA 8260D/5030B0.009Toluene mg/kg dry 12/19/2412/19/240.005 EPA 8260D/5030BNDtrans-1,2-Dichloroethene mg/kg dry 12/19/2412/19/240.005 EPA 8260D/5030BNDtrans-1,3-Dichloropropene mg/kg dry 12/19/2412/19/240.005 EPA 8260D/5030BNDTrichloroethene Project Name: 23501 Maverik (Chevron), 1350 E 700 S, Clearfield-CtF WO#: 24L1006 www.ChemtechFord.com Page 15 of 54Page 15 of 55 xx Chemtech-Ford Laboratories Serving the Intermountain West Since 1953 Certificate of Analysis 9632 South 500 West Sandy, UT 84070 O:(801) 262-7299 F: (866) 792-0093 www.ChemtechFord.com CMT Technical Services, Inc. Michael Sauerwein 2800 South Redwood Road West Valley City, UT 84119-2375 PO#: Receipt: Date Reported: Project Name: 12/11/24 17:10 @ 4.9 °C 12/26/2024 23501 Maverik (Chevron), 1350 E 700 S, Clearfield-Limited Phase II ESA Sample ID: B-5-8' (cont.) Lab ID: 24L1006-05Matrix: Solid Flag(s)Units Analysis Date/Time Date Sampled: 12/10/24 13:32 Preparation Date/Time Sampled By: Michael Sauerwein Minimum Reporting Limit MethodResult Volatile Organic Compounds (cont.) mg/kg dry 12/19/2412/19/240.005 EPA 8260D/5030BNDTrichlorofluoromethane mg/kg dry 12/19/2412/19/240.004 EPA 8260D/5030BNDVinyl Chloride mg/kg dry 12/19/2412/19/240.02 EPA 8260D/5030B0.05Xylenes, total mg/kg dry 12/19/2412/19/240.05 EPA 8260D/5030B0.21Gasoline Range Organics Project Name: 23501 Maverik (Chevron), 1350 E 700 S, Clearfield-CtF WO#: 24L1006 www.ChemtechFord.com Page 16 of 54Page 16 of 55 xx Chemtech-Ford Laboratories Serving the Intermountain West Since 1953 Certificate of Analysis 9632 South 500 West Sandy, UT 84070 O:(801) 262-7299 F: (866) 792-0093 www.ChemtechFord.com CMT Technical Services, Inc. Michael Sauerwein 2800 South Redwood Road West Valley City, UT 84119-2375 PO#: Receipt: Date Reported: Project Name: 12/11/24 17:10 @ 4.9 °C 12/26/2024 23501 Maverik (Chevron), 1350 E 700 S, Clearfield-Limited Phase II ESA Sample ID: B-6-12' Lab ID: 24L1006-06Matrix: Solid Flag(s)Units Analysis Date/Time Date Sampled: 12/10/24 14:34 Preparation Date/Time Sampled By: Michael Sauerwein Minimum Reporting Limit MethodResult Inorganic %12/12/2412/12/240.1 CTF800089.3Total Solids Diesel Range mg/kg dry 12/18/2412/18/2456EPA 8015 CNDDiesel Range Organics Volatile Organic Compounds mg/kg dry 12/19/2412/19/240.006 EPA 8260D/5030BND1,1,1,2-Tetrachloroethane mg/kg dry 12/19/2412/19/240.006 EPA 8260D/5030BND1,1,1-Trichloroethane mg/kg dry 12/19/2412/19/240.006 EPA 8260D/5030BND1,1,2,2-Tetrachloroethane mg/kg dry 12/19/2412/19/240.006 EPA 8260D/5030BND1,1,2-Trichloroethane mg/kg dry 12/19/2412/19/240.006 EPA 8260D/5030BND1,1,2-Trichlorotrifluoroethane mg/kg dry 12/19/2412/19/240.006 EPA 8260D/5030BND1,1-Dichloroethane mg/kg dry 12/19/2412/19/240.006 EPA 8260D/5030BND1,1-Dichloroethene mg/kg dry 12/19/2412/19/240.006 EPA 8260D/5030BND1,1-Dichloropropene mg/kg dry 12/19/2412/19/240.006 EPA 8260D/5030BND1,2,3-Trichlorobenzene mg/kg dry 12/19/2412/19/240.006 EPA 8260D/5030BND1,2,3-Trichloropropane mg/kg dry 12/19/2412/19/240.006 EPA 8260D/5030BND1,2,4-Trichlorobenzene mg/kg dry 12/19/2412/19/240.006 EPA 8260D/5030BND1,2,4-Trimethylbenzene mg/kg dry 12/19/2412/19/240.006 EPA 8260D/5030BND1,2-Dibromo-3-chloropropane mg/kg dry 12/19/2412/19/240.006 EPA 8260D/5030BND1,2-Dibromoethane (EDB) mg/kg dry 12/19/2412/19/240.006 EPA 8260D/5030BND1,2-Dichlorobenzene mg/kg dry 12/19/2412/19/240.006 EPA 8260D/5030BND1,2-Dichloroethane mg/kg dry 12/19/2412/19/240.006 EPA 8260D/5030BND1,2-Dichloropropane mg/kg dry 12/19/2412/19/240.006 EPA 8260D/5030BND1,3,5-Trimethylbenzene mg/kg dry 12/19/2412/19/240.006 EPA 8260D/5030BND1,3-Dichlorobenzene mg/kg dry 12/19/2412/19/240.006 EPA 8260D/5030BND1,3-Dichloropropane mg/kg dry 12/19/2412/19/240.006 EPA 8260D/5030BND1,4-Dichlorobenzene mg/kg dry 12/19/2412/19/240.006 EPA 8260D/5030BND2,2-Dichloropropane mg/kg dry 12/19/2412/19/240.006 EPA 8260D/5030BND2-Chlorotoluene mg/kg dry 12/19/2412/19/240.01 EPA 8260D/5030BND2-Nitropropane mg/kg dry 12/19/2412/19/240.006 EPA 8260D/5030BND4-Chlorotoluene mg/kg dry 12/19/2412/19/240.006 EPA 8260D/5030BNDp-Isopropyltoluene mg/kg dry 12/19/2412/19/240.12 EPA 8260D/5030BNDAcetone mg/kg dry 12/19/2412/19/240.002 EPA 8260D/5030BNDBenzene mg/kg dry 12/19/2412/19/240.006 EPA 8260D/5030BNDBromobenzene mg/kg dry 12/19/2412/19/240.006 EPA 8260D/5030BNDBromochloromethane mg/kg dry 12/19/2412/19/240.006 EPA 8260D/5030BNDBromodichloromethane mg/kg dry 12/19/2412/19/240.006 EPA 8260D/5030BNDBromoform Project Name: 23501 Maverik (Chevron), 1350 E 700 S, Clearfield-CtF WO#: 24L1006 www.ChemtechFord.com Page 17 of 54Page 17 of 55 xx Chemtech-Ford Laboratories Serving the Intermountain West Since 1953 Certificate of Analysis 9632 South 500 West Sandy, UT 84070 O:(801) 262-7299 F: (866) 792-0093 www.ChemtechFord.com CMT Technical Services, Inc. Michael Sauerwein 2800 South Redwood Road West Valley City, UT 84119-2375 PO#: Receipt: Date Reported: Project Name: 12/11/24 17:10 @ 4.9 °C 12/26/2024 23501 Maverik (Chevron), 1350 E 700 S, Clearfield-Limited Phase II ESA Sample ID: B-6-12' (cont.) Lab ID: 24L1006-06Matrix: Solid Flag(s)Units Analysis Date/Time Date Sampled: 12/10/24 14:34 Preparation Date/Time Sampled By: Michael Sauerwein Minimum Reporting Limit MethodResult Volatile Organic Compounds (cont.) mg/kg dry 12/19/2412/19/240.01 EPA 8260D/5030BNDBromomethane mg/kg dry 12/19/2412/19/240.01 EPA 8260D/5030BNDCarbon Disulfide mg/kg dry 12/19/2412/19/240.006 EPA 8260D/5030BNDCarbon Tetrachloride mg/kg dry 12/19/2412/19/240.006 EPA 8260D/5030BNDChlorobenzene mg/kg dry 12/19/2412/19/240.006 EPA 8260D/5030BNDChloroethane mg/kg dry 12/19/2412/19/240.006 EPA 8260D/5030BNDChloroform mg/kg dry 12/19/2412/19/240.006 EPA 8260D/5030BNDChloromethane mg/kg dry 12/19/2412/19/240.006 EPA 8260D/5030BNDcis-1,2-Dichloroethene mg/kg dry 12/19/2412/19/240.006 EPA 8260D/5030BNDcis-1,3-Dichloropropene mg/kg dry 12/19/2412/19/240.06 EPA 8260D/5030BNDCyclohexanone mg/kg dry 12/19/2412/19/240.006 EPA 8260D/5030BNDDibromochloromethane mg/kg dry 12/19/2412/19/240.006 EPA 8260D/5030BNDDibromomethane mg/kg dry 12/19/2412/19/240.006 EPA 8260D/5030BNDDichlorodifluoromethane mg/kg dry 12/19/2412/19/240.01 EPA 8260D/5030BNDEthyl Acetate mg/kg dry 12/19/2412/19/240.006 EPA 8260D/5030BNDEthyl Ether mg/kg dry 12/19/2412/19/240.006 EPA 8260D/5030BNDEthylbenzene mg/kg dry 12/19/2412/19/240.006 EPA 8260D/5030BNDHexachlorobutadiene mg/kg dry 12/19/2412/19/240.12 EPA 8260D/5030BNDIsobutanol mg/kg dry 12/19/2412/19/240.006 EPA 8260D/5030BNDIsopropylbenzene mg/kg dry 12/19/2412/19/240.01 EPA 8260D/5030BNDMethyl Ethyl Ketone mg/kg dry 12/19/2412/19/240.03 EPA 8260D/5030BNDMethyl Isobutyl Ketone mg/kg dry 12/19/2412/19/240.006 EPA 8260D/5030BNDMethylene Chloride mg/kg dry 12/19/2412/19/240.003 EPA 8260D/5030BNDMethyl-tert-butyl ether (MTBE) mg/kg dry 12/19/2412/19/240.006 EPA 8260D/5030BNDNaphthalene mg/kg dry 12/19/2412/19/240.29 EPA 8260D/5030BNDn-Butyl Alcohol mg/kg dry 12/19/2412/19/240.006 EPA 8260D/5030BNDn-Butylbenzene mg/kg dry 12/19/2412/19/240.006 EPA 8260D/5030BNDn-Propyl Benzene mg/kg dry 12/19/2412/19/240.006 EPA 8260D/5030BNDPentachloroethane mg/kg dry 12/19/2412/19/240.006 EPA 8260D/5030BNDsec-Butyl Benzene mg/kg dry 12/19/2412/19/240.006 EPA 8260D/5030BNDStyrene mg/kg dry 12/19/2412/19/240.006 EPA 8260D/5030BNDtert-Butylbenzene mg/kg dry 12/19/2412/19/240.006 EPA 8260D/5030BNDTetrachloroethene mg/kg dry 12/19/2412/19/240.006 EPA 8260D/5030BNDToluene mg/kg dry 12/19/2412/19/240.006 EPA 8260D/5030BNDtrans-1,2-Dichloroethene mg/kg dry 12/19/2412/19/240.006 EPA 8260D/5030BNDtrans-1,3-Dichloropropene mg/kg dry 12/19/2412/19/240.006 EPA 8260D/5030BNDTrichloroethene Project Name: 23501 Maverik (Chevron), 1350 E 700 S, Clearfield-CtF WO#: 24L1006 www.ChemtechFord.com Page 18 of 54Page 18 of 55 xx Chemtech-Ford Laboratories Serving the Intermountain West Since 1953 Certificate of Analysis 9632 South 500 West Sandy, UT 84070 O:(801) 262-7299 F: (866) 792-0093 www.ChemtechFord.com CMT Technical Services, Inc. Michael Sauerwein 2800 South Redwood Road West Valley City, UT 84119-2375 PO#: Receipt: Date Reported: Project Name: 12/11/24 17:10 @ 4.9 °C 12/26/2024 23501 Maverik (Chevron), 1350 E 700 S, Clearfield-Limited Phase II ESA Sample ID: B-6-12' (cont.) Lab ID: 24L1006-06Matrix: Solid Flag(s)Units Analysis Date/Time Date Sampled: 12/10/24 14:34 Preparation Date/Time Sampled By: Michael Sauerwein Minimum Reporting Limit MethodResult Volatile Organic Compounds (cont.) mg/kg dry 12/19/2412/19/240.006 EPA 8260D/5030BNDTrichlorofluoromethane mg/kg dry 12/19/2412/19/240.005 EPA 8260D/5030BNDVinyl Chloride mg/kg dry 12/19/2412/19/240.02 EPA 8260D/5030B0.02Xylenes, total mg/kg dry 12/19/2412/19/240.06 EPA 8260D/5030B0.06Gasoline Range Organics Project Name: 23501 Maverik (Chevron), 1350 E 700 S, Clearfield-CtF WO#: 24L1006 www.ChemtechFord.com Page 19 of 54Page 19 of 55 xx Chemtech-Ford Laboratories Serving the Intermountain West Since 1953 Certificate of Analysis 9632 South 500 West Sandy, UT 84070 O:(801) 262-7299 F: (866) 792-0093 www.ChemtechFord.com CMT Technical Services, Inc. Michael Sauerwein 2800 South Redwood Road West Valley City, UT 84119-2375 PO#: Receipt: Date Reported: Project Name: 12/11/24 17:10 @ 4.9 °C 12/26/2024 23501 Maverik (Chevron), 1350 E 700 S, Clearfield-Limited Phase II ESA Sample ID: B-7-8.5' Lab ID: 24L1006-07Matrix: Solid Flag(s)Units Analysis Date/Time Date Sampled: 12/11/24 9:52 Preparation Date/Time Sampled By: Michael Sauerwein Minimum Reporting Limit MethodResult Inorganic %12/12/2412/12/240.1 CTF800085.6Total Solids Diesel Range mg/kg dry 12/18/2412/18/2458EPA 8015 C4990Diesel Range Organics Volatile Organic Compounds mg/kg dry 12/19/2412/19/240.29 EPA 8260D/5030BND1,1,1,2-Tetrachloroethane mg/kg dry 12/19/2412/19/240.29 EPA 8260D/5030BND1,1,1-Trichloroethane mg/kg dry 12/19/2412/19/240.29 EPA 8260D/5030BND1,1,2,2-Tetrachloroethane mg/kg dry 12/19/2412/19/240.29 EPA 8260D/5030BND1,1,2-Trichloroethane mg/kg dry 12/19/2412/19/240.29 EPA 8260D/5030BND1,1,2-Trichlorotrifluoroethane mg/kg dry 12/19/2412/19/240.29 EPA 8260D/5030BND1,1-Dichloroethane mg/kg dry 12/19/2412/19/240.29 EPA 8260D/5030BND1,1-Dichloroethene mg/kg dry 12/19/2412/19/240.29 EPA 8260D/5030BND1,1-Dichloropropene mg/kg dry 12/19/2412/19/240.29 EPA 8260D/5030BND1,2,3-Trichlorobenzene mg/kg dry 12/19/2412/19/240.29 EPA 8260D/5030BND1,2,3-Trichloropropane mg/kg dry 12/19/2412/19/240.29 EPA 8260D/5030BND1,2,4-Trichlorobenzene mg/kg dry 12/19/2412/19/245.84 EPA 8260D/5030B2971,2,4-Trimethylbenzene mg/kg dry 12/19/2412/19/240.29 EPA 8260D/5030BND1,2-Dibromo-3-chloropropane mg/kg dry 12/19/2412/19/240.29 EPA 8260D/5030BND1,2-Dibromoethane (EDB) mg/kg dry 12/19/2412/19/240.29 EPA 8260D/5030BND1,2-Dichlorobenzene mg/kg dry 12/19/2412/19/240.29 EPA 8260D/5030BND1,2-Dichloroethane mg/kg dry 12/19/2412/19/240.29 EPA 8260D/5030BND1,2-Dichloropropane mg/kg dry 12/19/2412/19/245.84 EPA 8260D/5030B1071,3,5-Trimethylbenzene mg/kg dry 12/19/2412/19/240.29 EPA 8260D/5030BND1,3-Dichlorobenzene mg/kg dry 12/19/2412/19/240.29 EPA 8260D/5030BND1,3-Dichloropropane mg/kg dry 12/19/2412/19/240.29 EPA 8260D/5030BND1,4-Dichlorobenzene mg/kg dry 12/19/2412/19/240.29 EPA 8260D/5030BND2,2-Dichloropropane mg/kg dry 12/19/2412/19/240.29 EPA 8260D/5030BND2-Chlorotoluene mg/kg dry 12/19/2412/19/240.58 EPA 8260D/5030BND2-Nitropropane mg/kg dry 12/19/2412/19/240.29 EPA 8260D/5030BND4-Chlorotoluene mg/kg dry 12/19/2412/19/240.29 EPA 8260D/5030B2.14p-Isopropyltoluene mg/kg dry 12/19/2412/19/245.84 EPA 8260D/5030BNDAcetone mg/kg dry 12/19/2412/19/240.12 EPA 8260D/5030B0.35Benzene mg/kg dry 12/19/2412/19/240.29 EPA 8260D/5030BNDBromobenzene mg/kg dry 12/19/2412/19/240.29 EPA 8260D/5030BNDBromochloromethane mg/kg dry 12/19/2412/19/240.29 EPA 8260D/5030BNDBromodichloromethane mg/kg dry 12/19/2412/19/240.29 EPA 8260D/5030BNDBromoform Project Name: 23501 Maverik (Chevron), 1350 E 700 S, Clearfield-CtF WO#: 24L1006 www.ChemtechFord.com Page 20 of 54Page 20 of 55 xx Chemtech-Ford Laboratories Serving the Intermountain West Since 1953 Certificate of Analysis 9632 South 500 West Sandy, UT 84070 O:(801) 262-7299 F: (866) 792-0093 www.ChemtechFord.com CMT Technical Services, Inc. Michael Sauerwein 2800 South Redwood Road West Valley City, UT 84119-2375 PO#: Receipt: Date Reported: Project Name: 12/11/24 17:10 @ 4.9 °C 12/26/2024 23501 Maverik (Chevron), 1350 E 700 S, Clearfield-Limited Phase II ESA Sample ID: B-7-8.5' (cont.) Lab ID: 24L1006-07Matrix: Solid Flag(s)Units Analysis Date/Time Date Sampled: 12/11/24 9:52 Preparation Date/Time Sampled By: Michael Sauerwein Minimum Reporting Limit MethodResult Volatile Organic Compounds (cont.) mg/kg dry 12/19/2412/19/240.58 EPA 8260D/5030BNDBromomethane mg/kg dry 12/19/2412/19/240.58 EPA 8260D/5030BNDCarbon Disulfide mg/kg dry 12/19/2412/19/240.29 EPA 8260D/5030BNDCarbon Tetrachloride mg/kg dry 12/19/2412/19/240.29 EPA 8260D/5030BNDChlorobenzene mg/kg dry 12/19/2412/19/240.29 EPA 8260D/5030BNDChloroethane mg/kg dry 12/19/2412/19/240.29 EPA 8260D/5030BNDChloroform mg/kg dry 12/19/2412/19/240.29 EPA 8260D/5030BNDChloromethane mg/kg dry 12/19/2412/19/240.29 EPA 8260D/5030BNDcis-1,2-Dichloroethene mg/kg dry 12/19/2412/19/240.29 EPA 8260D/5030BNDcis-1,3-Dichloropropene mg/kg dry 12/19/2412/19/242.92 EPA 8260D/5030BNDCyclohexanone mg/kg dry 12/19/2412/19/240.29 EPA 8260D/5030BNDDibromochloromethane mg/kg dry 12/19/2412/19/240.29 EPA 8260D/5030BNDDibromomethane mg/kg dry 12/19/2412/19/240.29 EPA 8260D/5030BNDDichlorodifluoromethane mg/kg dry 12/19/2412/19/240.58 EPA 8260D/5030BNDEthyl Acetate mg/kg dry 12/19/2412/19/240.29 EPA 8260D/5030BNDEthyl Ether mg/kg dry 12/19/2412/19/245.84 EPA 8260D/5030B39.7Ethylbenzene mg/kg dry 12/19/2412/19/240.29 EPA 8260D/5030BNDHexachlorobutadiene mg/kg dry 12/19/2412/19/245.84 EPA 8260D/5030BNDIsobutanol mg/kg dry 12/19/2412/19/240.29 EPA 8260D/5030B3.25Isopropylbenzene mg/kg dry 12/19/2412/19/240.58 EPA 8260D/5030BNDMethyl Ethyl Ketone mg/kg dry 12/19/2412/19/241.46 EPA 8260D/5030BNDMethyl Isobutyl Ketone mg/kg dry 12/19/2412/19/240.29 EPA 8260D/5030BNDMethylene Chloride mg/kg dry 12/19/2412/19/240.18 EPA 8260D/5030BNDMethyl-tert-butyl ether (MTBE) mg/kg dry 12/19/2412/19/245.84 EPA 8260D/5030B62.0Naphthalene mg/kg dry 12/19/2412/19/2414.6 EPA 8260D/5030BNDn-Butyl Alcohol mg/kg dry 12/19/2412/19/240.29 EPA 8260D/5030BNDn-Butylbenzene mg/kg dry 12/19/2412/19/245.84 EPA 8260D/5030B23.0n-Propyl Benzene mg/kg dry 12/19/2412/19/240.29 EPA 8260D/5030BNDPentachloroethane mg/kg dry 12/19/2412/19/240.29 EPA 8260D/5030B5.98sec-Butyl Benzene mg/kg dry 12/19/2412/19/240.29 EPA 8260D/5030BNDStyrene mg/kg dry 12/19/2412/19/240.29 EPA 8260D/5030BNDtert-Butylbenzene mg/kg dry 12/19/2412/19/240.29 EPA 8260D/5030BNDTetrachloroethene mg/kg dry 12/19/2412/19/240.29 EPA 8260D/5030B8.08Toluene mg/kg dry 12/19/2412/19/240.29 EPA 8260D/5030BNDtrans-1,2-Dichloroethene mg/kg dry 12/19/2412/19/240.29 EPA 8260D/5030BNDtrans-1,3-Dichloropropene mg/kg dry 12/19/2412/19/240.29 EPA 8260D/5030BNDTrichloroethene Project Name: 23501 Maverik (Chevron), 1350 E 700 S, Clearfield-CtF WO#: 24L1006 www.ChemtechFord.com Page 21 of 54Page 21 of 55 xx Chemtech-Ford Laboratories Serving the Intermountain West Since 1953 Certificate of Analysis 9632 South 500 West Sandy, UT 84070 O:(801) 262-7299 F: (866) 792-0093 www.ChemtechFord.com CMT Technical Services, Inc. Michael Sauerwein 2800 South Redwood Road West Valley City, UT 84119-2375 PO#: Receipt: Date Reported: Project Name: 12/11/24 17:10 @ 4.9 °C 12/26/2024 23501 Maverik (Chevron), 1350 E 700 S, Clearfield-Limited Phase II ESA Sample ID: B-7-8.5' (cont.) Lab ID: 24L1006-07Matrix: Solid Flag(s)Units Analysis Date/Time Date Sampled: 12/11/24 9:52 Preparation Date/Time Sampled By: Michael Sauerwein Minimum Reporting Limit MethodResult Volatile Organic Compounds (cont.) mg/kg dry 12/19/2412/19/240.29 EPA 8260D/5030BNDTrichlorofluoromethane mg/kg dry 12/19/2412/19/240.23 EPA 8260D/5030BNDVinyl Chloride mg/kg dry 12/19/2412/19/2417.5 EPA 8260D/5030B388Xylenes, total mg/kg dry 12/19/2412/19/242.92 EPA 8260D/5030B2100Gasoline Range Organics Project Name: 23501 Maverik (Chevron), 1350 E 700 S, Clearfield-CtF WO#: 24L1006 www.ChemtechFord.com Page 22 of 54Page 22 of 55 xx Chemtech-Ford Laboratories Serving the Intermountain West Since 1953 Certificate of Analysis 9632 South 500 West Sandy, UT 84070 O:(801) 262-7299 F: (866) 792-0093 www.ChemtechFord.com CMT Technical Services, Inc. Michael Sauerwein 2800 South Redwood Road West Valley City, UT 84119-2375 PO#: Receipt: Date Reported: Project Name: 12/11/24 17:10 @ 4.9 °C 12/26/2024 23501 Maverik (Chevron), 1350 E 700 S, Clearfield-Limited Phase II ESA Sample ID: B-8-10' Lab ID: 24L1006-08Matrix: Solid Flag(s)Units Analysis Date/Time Date Sampled: 12/11/24 10:56 Preparation Date/Time Sampled By: Michael Sauerwein Minimum Reporting Limit MethodResult Inorganic %12/12/2412/12/240.1 CTF800080.6Total Solids Diesel Range mg/kg dry 12/18/2412/18/2462EPA 8015 C111Diesel Range Organics Volatile Organic Compounds mg/kg dry 12/19/2412/19/240.007 EPA 8260D/5030BND1,1,1,2-Tetrachloroethane mg/kg dry 12/19/2412/19/240.007 EPA 8260D/5030BND1,1,1-Trichloroethane mg/kg dry 12/19/2412/19/240.007 EPA 8260D/5030BND1,1,2,2-Tetrachloroethane mg/kg dry 12/19/2412/19/240.007 EPA 8260D/5030BND1,1,2-Trichloroethane mg/kg dry 12/19/2412/19/240.007 EPA 8260D/5030BND1,1,2-Trichlorotrifluoroethane mg/kg dry 12/19/2412/19/240.007 EPA 8260D/5030BND1,1-Dichloroethane mg/kg dry 12/19/2412/19/240.007 EPA 8260D/5030BND1,1-Dichloroethene mg/kg dry 12/19/2412/19/240.007 EPA 8260D/5030BND1,1-Dichloropropene mg/kg dry 12/19/2412/19/240.007 EPA 8260D/5030BND1,2,3-Trichlorobenzene mg/kg dry 12/19/2412/19/240.007 EPA 8260D/5030BND1,2,3-Trichloropropane mg/kg dry 12/19/2412/19/240.007 EPA 8260D/5030BND1,2,4-Trichlorobenzene mg/kg dry 12/19/2412/19/240.007 EPA 8260D/5030B0.021,2,4-Trimethylbenzene mg/kg dry 12/19/2412/19/240.007 EPA 8260D/5030BND1,2-Dibromo-3-chloropropane mg/kg dry 12/19/2412/19/240.007 EPA 8260D/5030BND1,2-Dibromoethane (EDB) mg/kg dry 12/19/2412/19/240.007 EPA 8260D/5030BND1,2-Dichlorobenzene mg/kg dry 12/19/2412/19/240.007 EPA 8260D/5030BND1,2-Dichloroethane mg/kg dry 12/19/2412/19/240.007 EPA 8260D/5030BND1,2-Dichloropropane mg/kg dry 12/19/2412/19/240.007 EPA 8260D/5030B0.0071,3,5-Trimethylbenzene mg/kg dry 12/19/2412/19/240.007 EPA 8260D/5030BND1,3-Dichlorobenzene mg/kg dry 12/19/2412/19/240.007 EPA 8260D/5030BND1,3-Dichloropropane mg/kg dry 12/19/2412/19/240.007 EPA 8260D/5030BND1,4-Dichlorobenzene mg/kg dry 12/19/2412/19/240.007 EPA 8260D/5030BND2,2-Dichloropropane mg/kg dry 12/19/2412/19/240.007 EPA 8260D/5030BND2-Chlorotoluene mg/kg dry 12/19/2412/19/240.01 EPA 8260D/5030BND2-Nitropropane mg/kg dry 12/19/2412/19/240.007 EPA 8260D/5030BND4-Chlorotoluene mg/kg dry 12/19/2412/19/240.007 EPA 8260D/5030BNDp-Isopropyltoluene mg/kg dry 12/19/2412/19/240.14 EPA 8260D/5030B0.18Acetone mg/kg dry 12/19/2412/19/240.003 EPA 8260D/5030B0.01Benzene mg/kg dry 12/19/2412/19/240.007 EPA 8260D/5030BNDBromobenzene mg/kg dry 12/19/2412/19/240.007 EPA 8260D/5030BNDBromochloromethane mg/kg dry 12/19/2412/19/240.007 EPA 8260D/5030BNDBromodichloromethane mg/kg dry 12/19/2412/19/240.007 EPA 8260D/5030BNDBromoform Project Name: 23501 Maverik (Chevron), 1350 E 700 S, Clearfield-CtF WO#: 24L1006 www.ChemtechFord.com Page 23 of 54Page 23 of 55 xx Chemtech-Ford Laboratories Serving the Intermountain West Since 1953 Certificate of Analysis 9632 South 500 West Sandy, UT 84070 O:(801) 262-7299 F: (866) 792-0093 www.ChemtechFord.com CMT Technical Services, Inc. Michael Sauerwein 2800 South Redwood Road West Valley City, UT 84119-2375 PO#: Receipt: Date Reported: Project Name: 12/11/24 17:10 @ 4.9 °C 12/26/2024 23501 Maverik (Chevron), 1350 E 700 S, Clearfield-Limited Phase II ESA Sample ID: B-8-10' (cont.) Lab ID: 24L1006-08Matrix: Solid Flag(s)Units Analysis Date/Time Date Sampled: 12/11/24 10:56 Preparation Date/Time Sampled By: Michael Sauerwein Minimum Reporting Limit MethodResult Volatile Organic Compounds (cont.) mg/kg dry 12/19/2412/19/240.01 EPA 8260D/5030BNDBromomethane mg/kg dry 12/19/2412/19/240.01 EPA 8260D/5030BNDCarbon Disulfide mg/kg dry 12/19/2412/19/240.007 EPA 8260D/5030BNDCarbon Tetrachloride mg/kg dry 12/19/2412/19/240.007 EPA 8260D/5030BNDChlorobenzene mg/kg dry 12/19/2412/19/240.007 EPA 8260D/5030BNDChloroethane mg/kg dry 12/19/2412/19/240.007 EPA 8260D/5030BNDChloroform mg/kg dry 12/19/2412/19/240.007 EPA 8260D/5030BNDChloromethane mg/kg dry 12/19/2412/19/240.007 EPA 8260D/5030BNDcis-1,2-Dichloroethene mg/kg dry 12/19/2412/19/240.007 EPA 8260D/5030BNDcis-1,3-Dichloropropene mg/kg dry 12/19/2412/19/240.07 EPA 8260D/5030BNDCyclohexanone mg/kg dry 12/19/2412/19/240.007 EPA 8260D/5030BNDDibromochloromethane mg/kg dry 12/19/2412/19/240.007 EPA 8260D/5030BNDDibromomethane mg/kg dry 12/19/2412/19/240.007 EPA 8260D/5030BNDDichlorodifluoromethane mg/kg dry 12/19/2412/19/240.01 EPA 8260D/5030BNDEthyl Acetate mg/kg dry 12/19/2412/19/240.007 EPA 8260D/5030BNDEthyl Ether mg/kg dry 12/19/2412/19/240.007 EPA 8260D/5030B0.009Ethylbenzene mg/kg dry 12/19/2412/19/240.007 EPA 8260D/5030BNDHexachlorobutadiene mg/kg dry 12/19/2412/19/240.14 EPA 8260D/5030BNDIsobutanol mg/kg dry 12/19/2412/19/240.007 EPA 8260D/5030BNDIsopropylbenzene mg/kg dry 12/19/2412/19/240.01 EPA 8260D/5030BNDMethyl Ethyl Ketone mg/kg dry 12/19/2412/19/240.04 EPA 8260D/5030BNDMethyl Isobutyl Ketone mg/kg dry 12/19/2412/19/240.007 EPA 8260D/5030BNDMethylene Chloride mg/kg dry 12/19/2412/19/240.004 EPA 8260D/5030BNDMethyl-tert-butyl ether (MTBE) mg/kg dry 12/19/2412/19/240.007 EPA 8260D/5030BNDNaphthalene mg/kg dry 12/19/2412/19/240.35 EPA 8260D/5030BNDn-Butyl Alcohol mg/kg dry 12/19/2412/19/240.007 EPA 8260D/5030BNDn-Butylbenzene mg/kg dry 12/19/2412/19/240.007 EPA 8260D/5030BNDn-Propyl Benzene mg/kg dry 12/19/2412/19/240.007 EPA 8260D/5030BNDPentachloroethane mg/kg dry 12/19/2412/19/240.007 EPA 8260D/5030BNDsec-Butyl Benzene mg/kg dry 12/19/2412/19/240.007 EPA 8260D/5030BNDStyrene mg/kg dry 12/19/2412/19/240.007 EPA 8260D/5030BNDtert-Butylbenzene mg/kg dry 12/19/2412/19/240.007 EPA 8260D/5030BNDTetrachloroethene mg/kg dry 12/19/2412/19/240.007 EPA 8260D/5030B0.02Toluene mg/kg dry 12/19/2412/19/240.007 EPA 8260D/5030BNDtrans-1,2-Dichloroethene mg/kg dry 12/19/2412/19/240.007 EPA 8260D/5030BNDtrans-1,3-Dichloropropene mg/kg dry 12/19/2412/19/240.007 EPA 8260D/5030BNDTrichloroethene Project Name: 23501 Maverik (Chevron), 1350 E 700 S, Clearfield-CtF WO#: 24L1006 www.ChemtechFord.com Page 24 of 54Page 24 of 55 xx Chemtech-Ford Laboratories Serving the Intermountain West Since 1953 Certificate of Analysis 9632 South 500 West Sandy, UT 84070 O:(801) 262-7299 F: (866) 792-0093 www.ChemtechFord.com CMT Technical Services, Inc. Michael Sauerwein 2800 South Redwood Road West Valley City, UT 84119-2375 PO#: Receipt: Date Reported: Project Name: 12/11/24 17:10 @ 4.9 °C 12/26/2024 23501 Maverik (Chevron), 1350 E 700 S, Clearfield-Limited Phase II ESA Sample ID: B-8-10' (cont.) Lab ID: 24L1006-08Matrix: Solid Flag(s)Units Analysis Date/Time Date Sampled: 12/11/24 10:56 Preparation Date/Time Sampled By: Michael Sauerwein Minimum Reporting Limit MethodResult Volatile Organic Compounds (cont.) mg/kg dry 12/19/2412/19/240.007 EPA 8260D/5030BNDTrichlorofluoromethane mg/kg dry 12/19/2412/19/240.006 EPA 8260D/5030BNDVinyl Chloride mg/kg dry 12/19/2412/19/240.02 EPA 8260D/5030B0.05Xylenes, total mg/kg dry 12/19/2412/19/240.07 EPA 8260D/5030B2.61Gasoline Range Organics Project Name: 23501 Maverik (Chevron), 1350 E 700 S, Clearfield-CtF WO#: 24L1006 www.ChemtechFord.com Page 25 of 54Page 25 of 55 xx Chemtech-Ford Laboratories Serving the Intermountain West Since 1953 Certificate of Analysis 9632 South 500 West Sandy, UT 84070 O:(801) 262-7299 F: (866) 792-0093 www.ChemtechFord.com CMT Technical Services, Inc. Michael Sauerwein 2800 South Redwood Road West Valley City, UT 84119-2375 PO#: Receipt: Date Reported: Project Name: 12/11/24 17:10 @ 4.9 °C 12/26/2024 23501 Maverik (Chevron), 1350 E 700 S, Clearfield-Limited Phase II ESA Sample ID: B-9-10' Lab ID: 24L1006-09Matrix: Solid Flag(s)Units Analysis Date/Time Date Sampled: 12/11/24 11:15 Preparation Date/Time Sampled By: Michael Sauerwein Minimum Reporting Limit MethodResult Inorganic %12/12/2412/12/240.1 CTF800089.8Total Solids Diesel Range mg/kg dry 12/18/2412/18/2456EPA 8015 CNDDiesel Range Organics Volatile Organic Compounds mg/kg dry 12/19/2412/19/240.006 EPA 8260D/5030BND1,1,1,2-Tetrachloroethane mg/kg dry 12/19/2412/19/240.006 EPA 8260D/5030BND1,1,1-Trichloroethane mg/kg dry 12/19/2412/19/240.006 EPA 8260D/5030BND1,1,2,2-Tetrachloroethane mg/kg dry 12/19/2412/19/240.006 EPA 8260D/5030BND1,1,2-Trichloroethane mg/kg dry 12/19/2412/19/240.006 EPA 8260D/5030BND1,1,2-Trichlorotrifluoroethane mg/kg dry 12/19/2412/19/240.006 EPA 8260D/5030BND1,1-Dichloroethane mg/kg dry 12/19/2412/19/240.006 EPA 8260D/5030BND1,1-Dichloroethene mg/kg dry 12/19/2412/19/240.006 EPA 8260D/5030BND1,1-Dichloropropene mg/kg dry 12/19/2412/19/240.006 EPA 8260D/5030BND1,2,3-Trichlorobenzene mg/kg dry 12/19/2412/19/240.006 EPA 8260D/5030BND1,2,3-Trichloropropane mg/kg dry 12/19/2412/19/240.006 EPA 8260D/5030BND1,2,4-Trichlorobenzene mg/kg dry 12/19/2412/19/240.006 EPA 8260D/5030B0.0061,2,4-Trimethylbenzene mg/kg dry 12/19/2412/19/240.006 EPA 8260D/5030BND1,2-Dibromo-3-chloropropane mg/kg dry 12/19/2412/19/240.006 EPA 8260D/5030BND1,2-Dibromoethane (EDB) mg/kg dry 12/19/2412/19/240.006 EPA 8260D/5030BND1,2-Dichlorobenzene mg/kg dry 12/19/2412/19/240.006 EPA 8260D/5030BND1,2-Dichloroethane mg/kg dry 12/19/2412/19/240.006 EPA 8260D/5030BND1,2-Dichloropropane mg/kg dry 12/19/2412/19/240.006 EPA 8260D/5030BND1,3,5-Trimethylbenzene mg/kg dry 12/19/2412/19/240.006 EPA 8260D/5030BND1,3-Dichlorobenzene mg/kg dry 12/19/2412/19/240.006 EPA 8260D/5030BND1,3-Dichloropropane mg/kg dry 12/19/2412/19/240.006 EPA 8260D/5030BND1,4-Dichlorobenzene mg/kg dry 12/19/2412/19/240.006 EPA 8260D/5030BND2,2-Dichloropropane mg/kg dry 12/19/2412/19/240.006 EPA 8260D/5030BND2-Chlorotoluene mg/kg dry 12/19/2412/19/240.01 EPA 8260D/5030BND2-Nitropropane mg/kg dry 12/19/2412/19/240.006 EPA 8260D/5030BND4-Chlorotoluene mg/kg dry 12/19/2412/19/240.006 EPA 8260D/5030BNDp-Isopropyltoluene mg/kg dry 12/19/2412/19/240.11 EPA 8260D/5030BNDAcetone mg/kg dry 12/19/2412/19/240.002 EPA 8260D/5030BNDBenzene mg/kg dry 12/19/2412/19/240.006 EPA 8260D/5030BNDBromobenzene mg/kg dry 12/19/2412/19/240.006 EPA 8260D/5030BNDBromochloromethane mg/kg dry 12/19/2412/19/240.006 EPA 8260D/5030BNDBromodichloromethane mg/kg dry 12/19/2412/19/240.006 EPA 8260D/5030BNDBromoform Project Name: 23501 Maverik (Chevron), 1350 E 700 S, Clearfield-CtF WO#: 24L1006 www.ChemtechFord.com Page 26 of 54Page 26 of 55 xx Chemtech-Ford Laboratories Serving the Intermountain West Since 1953 Certificate of Analysis 9632 South 500 West Sandy, UT 84070 O:(801) 262-7299 F: (866) 792-0093 www.ChemtechFord.com CMT Technical Services, Inc. Michael Sauerwein 2800 South Redwood Road West Valley City, UT 84119-2375 PO#: Receipt: Date Reported: Project Name: 12/11/24 17:10 @ 4.9 °C 12/26/2024 23501 Maverik (Chevron), 1350 E 700 S, Clearfield-Limited Phase II ESA Sample ID: B-9-10' (cont.) Lab ID: 24L1006-09Matrix: Solid Flag(s)Units Analysis Date/Time Date Sampled: 12/11/24 11:15 Preparation Date/Time Sampled By: Michael Sauerwein Minimum Reporting Limit MethodResult Volatile Organic Compounds (cont.) mg/kg dry 12/19/2412/19/240.01 EPA 8260D/5030BNDBromomethane mg/kg dry 12/19/2412/19/240.01 EPA 8260D/5030BNDCarbon Disulfide mg/kg dry 12/19/2412/19/240.006 EPA 8260D/5030BNDCarbon Tetrachloride mg/kg dry 12/19/2412/19/240.006 EPA 8260D/5030BNDChlorobenzene mg/kg dry 12/19/2412/19/240.006 EPA 8260D/5030BNDChloroethane mg/kg dry 12/19/2412/19/240.006 EPA 8260D/5030BNDChloroform mg/kg dry 12/19/2412/19/240.006 EPA 8260D/5030BNDChloromethane mg/kg dry 12/19/2412/19/240.006 EPA 8260D/5030BNDcis-1,2-Dichloroethene mg/kg dry 12/19/2412/19/240.006 EPA 8260D/5030BNDcis-1,3-Dichloropropene mg/kg dry 12/19/2412/19/240.06 EPA 8260D/5030BNDCyclohexanone mg/kg dry 12/19/2412/19/240.006 EPA 8260D/5030BNDDibromochloromethane mg/kg dry 12/19/2412/19/240.006 EPA 8260D/5030BNDDibromomethane mg/kg dry 12/19/2412/19/240.006 EPA 8260D/5030BNDDichlorodifluoromethane mg/kg dry 12/19/2412/19/240.01 EPA 8260D/5030BNDEthyl Acetate mg/kg dry 12/19/2412/19/240.006 EPA 8260D/5030BNDEthyl Ether mg/kg dry 12/19/2412/19/240.006 EPA 8260D/5030BNDEthylbenzene mg/kg dry 12/19/2412/19/240.006 EPA 8260D/5030BNDHexachlorobutadiene mg/kg dry 12/19/2412/19/240.11 EPA 8260D/5030BNDIsobutanol mg/kg dry 12/19/2412/19/240.006 EPA 8260D/5030BNDIsopropylbenzene mg/kg dry 12/19/2412/19/240.01 EPA 8260D/5030BNDMethyl Ethyl Ketone mg/kg dry 12/19/2412/19/240.03 EPA 8260D/5030BNDMethyl Isobutyl Ketone mg/kg dry 12/19/2412/19/240.006 EPA 8260D/5030BNDMethylene Chloride mg/kg dry 12/19/2412/19/240.003 EPA 8260D/5030BNDMethyl-tert-butyl ether (MTBE) mg/kg dry 12/19/2412/19/240.006 EPA 8260D/5030BNDNaphthalene mg/kg dry 12/19/2412/19/240.28 EPA 8260D/5030BNDn-Butyl Alcohol mg/kg dry 12/19/2412/19/240.006 EPA 8260D/5030BNDn-Butylbenzene mg/kg dry 12/19/2412/19/240.006 EPA 8260D/5030BNDn-Propyl Benzene mg/kg dry 12/19/2412/19/240.006 EPA 8260D/5030BNDPentachloroethane mg/kg dry 12/19/2412/19/240.006 EPA 8260D/5030BNDsec-Butyl Benzene mg/kg dry 12/19/2412/19/240.006 EPA 8260D/5030BNDStyrene mg/kg dry 12/19/2412/19/240.006 EPA 8260D/5030BNDtert-Butylbenzene mg/kg dry 12/19/2412/19/240.006 EPA 8260D/5030BNDTetrachloroethene mg/kg dry 12/19/2412/19/240.006 EPA 8260D/5030BNDToluene mg/kg dry 12/19/2412/19/240.006 EPA 8260D/5030BNDtrans-1,2-Dichloroethene mg/kg dry 12/19/2412/19/240.006 EPA 8260D/5030BNDtrans-1,3-Dichloropropene mg/kg dry 12/19/2412/19/240.006 EPA 8260D/5030BNDTrichloroethene Project Name: 23501 Maverik (Chevron), 1350 E 700 S, Clearfield-CtF WO#: 24L1006 www.ChemtechFord.com Page 27 of 54Page 27 of 55 xx Chemtech-Ford Laboratories Serving the Intermountain West Since 1953 Certificate of Analysis 9632 South 500 West Sandy, UT 84070 O:(801) 262-7299 F: (866) 792-0093 www.ChemtechFord.com CMT Technical Services, Inc. Michael Sauerwein 2800 South Redwood Road West Valley City, UT 84119-2375 PO#: Receipt: Date Reported: Project Name: 12/11/24 17:10 @ 4.9 °C 12/26/2024 23501 Maverik (Chevron), 1350 E 700 S, Clearfield-Limited Phase II ESA Sample ID: B-9-10' (cont.) Lab ID: 24L1006-09Matrix: Solid Flag(s)Units Analysis Date/Time Date Sampled: 12/11/24 11:15 Preparation Date/Time Sampled By: Michael Sauerwein Minimum Reporting Limit MethodResult Volatile Organic Compounds (cont.) mg/kg dry 12/19/2412/19/240.006 EPA 8260D/5030BNDTrichlorofluoromethane mg/kg dry 12/19/2412/19/240.004 EPA 8260D/5030BNDVinyl Chloride mg/kg dry 12/19/2412/19/240.02 EPA 8260D/5030BNDXylenes, total mg/kg dry 12/19/2412/19/240.06 EPA 8260D/5030B0.17Gasoline Range Organics Project Name: 23501 Maverik (Chevron), 1350 E 700 S, Clearfield-CtF WO#: 24L1006 www.ChemtechFord.com Page 28 of 54Page 28 of 55 xx Chemtech-Ford Laboratories Serving the Intermountain West Since 1953 Certificate of Analysis 9632 South 500 West Sandy, UT 84070 O:(801) 262-7299 F: (866) 792-0093 www.ChemtechFord.com CMT Technical Services, Inc. Michael Sauerwein 2800 South Redwood Road West Valley City, UT 84119-2375 PO#: Receipt: Date Reported: Project Name: 12/11/24 17:10 @ 4.9 °C 12/26/2024 23501 Maverik (Chevron), 1350 E 700 S, Clearfield-Limited Phase II ESA Sample ID: B-10-9.75' Lab ID: 24L1006-10Matrix: Solid Flag(s)Units Analysis Date/Time Date Sampled: 12/11/24 12:40 Preparation Date/Time Sampled By: Michael Sauerwein Minimum Reporting Limit MethodResult Inorganic %12/12/2412/12/240.1 CTF800084.1Total Solids Diesel Range mg/kg dry 12/18/2412/18/2459EPA 8015 CNDDiesel Range Organics Volatile Organic Compounds mg/kg dry 12/19/2412/19/240.006 EPA 8260D/5030BND1,1,1,2-Tetrachloroethane mg/kg dry 12/19/2412/19/240.006 EPA 8260D/5030BND1,1,1-Trichloroethane mg/kg dry 12/19/2412/19/240.006 EPA 8260D/5030BND1,1,2,2-Tetrachloroethane mg/kg dry 12/19/2412/19/240.006 EPA 8260D/5030BND1,1,2-Trichloroethane mg/kg dry 12/19/2412/19/240.006 EPA 8260D/5030BND1,1,2-Trichlorotrifluoroethane mg/kg dry 12/19/2412/19/240.006 EPA 8260D/5030BND1,1-Dichloroethane mg/kg dry 12/19/2412/19/240.006 EPA 8260D/5030BND1,1-Dichloroethene mg/kg dry 12/19/2412/19/240.006 EPA 8260D/5030BND1,1-Dichloropropene mg/kg dry 12/19/2412/19/240.006 EPA 8260D/5030BND1,2,3-Trichlorobenzene mg/kg dry 12/19/2412/19/240.006 EPA 8260D/5030BND1,2,3-Trichloropropane mg/kg dry 12/19/2412/19/240.006 EPA 8260D/5030BND1,2,4-Trichlorobenzene mg/kg dry 12/19/2412/19/240.006 EPA 8260D/5030BND1,2,4-Trimethylbenzene mg/kg dry 12/19/2412/19/240.006 EPA 8260D/5030BND1,2-Dibromo-3-chloropropane mg/kg dry 12/19/2412/19/240.006 EPA 8260D/5030BND1,2-Dibromoethane (EDB) mg/kg dry 12/19/2412/19/240.006 EPA 8260D/5030BND1,2-Dichlorobenzene mg/kg dry 12/19/2412/19/240.006 EPA 8260D/5030BND1,2-Dichloroethane mg/kg dry 12/19/2412/19/240.006 EPA 8260D/5030BND1,2-Dichloropropane mg/kg dry 12/19/2412/19/240.006 EPA 8260D/5030BND1,3,5-Trimethylbenzene mg/kg dry 12/19/2412/19/240.006 EPA 8260D/5030BND1,3-Dichlorobenzene mg/kg dry 12/19/2412/19/240.006 EPA 8260D/5030BND1,3-Dichloropropane mg/kg dry 12/19/2412/19/240.006 EPA 8260D/5030BND1,4-Dichlorobenzene mg/kg dry 12/19/2412/19/240.006 EPA 8260D/5030BND2,2-Dichloropropane mg/kg dry 12/19/2412/19/240.006 EPA 8260D/5030BND2-Chlorotoluene mg/kg dry 12/19/2412/19/240.01 EPA 8260D/5030BND2-Nitropropane mg/kg dry 12/19/2412/19/240.006 EPA 8260D/5030BND4-Chlorotoluene mg/kg dry 12/19/2412/19/240.006 EPA 8260D/5030BNDp-Isopropyltoluene mg/kg dry 12/19/2412/19/240.12 EPA 8260D/5030BNDAcetone mg/kg dry 12/19/2412/19/240.002 EPA 8260D/5030B0.006Benzene mg/kg dry 12/19/2412/19/240.006 EPA 8260D/5030BNDBromobenzene mg/kg dry 12/19/2412/19/240.006 EPA 8260D/5030BNDBromochloromethane mg/kg dry 12/19/2412/19/240.006 EPA 8260D/5030BNDBromodichloromethane mg/kg dry 12/19/2412/19/240.006 EPA 8260D/5030BNDBromoform Project Name: 23501 Maverik (Chevron), 1350 E 700 S, Clearfield-CtF WO#: 24L1006 www.ChemtechFord.com Page 29 of 54Page 29 of 55 xx Chemtech-Ford Laboratories Serving the Intermountain West Since 1953 Certificate of Analysis 9632 South 500 West Sandy, UT 84070 O:(801) 262-7299 F: (866) 792-0093 www.ChemtechFord.com CMT Technical Services, Inc. Michael Sauerwein 2800 South Redwood Road West Valley City, UT 84119-2375 PO#: Receipt: Date Reported: Project Name: 12/11/24 17:10 @ 4.9 °C 12/26/2024 23501 Maverik (Chevron), 1350 E 700 S, Clearfield-Limited Phase II ESA Sample ID: B-10-9.75' (cont.) Lab ID: 24L1006-10Matrix: Solid Flag(s)Units Analysis Date/Time Date Sampled: 12/11/24 12:40 Preparation Date/Time Sampled By: Michael Sauerwein Minimum Reporting Limit MethodResult Volatile Organic Compounds (cont.) mg/kg dry 12/19/2412/19/240.01 EPA 8260D/5030BNDBromomethane mg/kg dry 12/19/2412/19/240.01 EPA 8260D/5030BNDCarbon Disulfide mg/kg dry 12/19/2412/19/240.006 EPA 8260D/5030BNDCarbon Tetrachloride mg/kg dry 12/19/2412/19/240.006 EPA 8260D/5030BNDChlorobenzene mg/kg dry 12/19/2412/19/240.006 EPA 8260D/5030BNDChloroethane mg/kg dry 12/19/2412/19/240.006 EPA 8260D/5030BNDChloroform mg/kg dry 12/19/2412/19/240.006 EPA 8260D/5030BNDChloromethane mg/kg dry 12/19/2412/19/240.006 EPA 8260D/5030BNDcis-1,2-Dichloroethene mg/kg dry 12/19/2412/19/240.006 EPA 8260D/5030BNDcis-1,3-Dichloropropene mg/kg dry 12/19/2412/19/240.06 EPA 8260D/5030BNDCyclohexanone mg/kg dry 12/19/2412/19/240.006 EPA 8260D/5030BNDDibromochloromethane mg/kg dry 12/19/2412/19/240.006 EPA 8260D/5030BNDDibromomethane mg/kg dry 12/19/2412/19/240.006 EPA 8260D/5030BNDDichlorodifluoromethane mg/kg dry 12/19/2412/19/240.01 EPA 8260D/5030BNDEthyl Acetate mg/kg dry 12/19/2412/19/240.006 EPA 8260D/5030BNDEthyl Ether mg/kg dry 12/19/2412/19/240.006 EPA 8260D/5030BNDEthylbenzene mg/kg dry 12/19/2412/19/240.006 EPA 8260D/5030BNDHexachlorobutadiene mg/kg dry 12/19/2412/19/240.12 EPA 8260D/5030BNDIsobutanol mg/kg dry 12/19/2412/19/240.006 EPA 8260D/5030BNDIsopropylbenzene mg/kg dry 12/19/2412/19/240.01 EPA 8260D/5030BNDMethyl Ethyl Ketone mg/kg dry 12/19/2412/19/240.03 EPA 8260D/5030BNDMethyl Isobutyl Ketone mg/kg dry 12/19/2412/19/240.006 EPA 8260D/5030BNDMethylene Chloride mg/kg dry 12/19/2412/19/240.004 EPA 8260D/5030BNDMethyl-tert-butyl ether (MTBE) mg/kg dry 12/19/2412/19/240.006 EPA 8260D/5030BNDNaphthalene mg/kg dry 12/19/2412/19/240.31 EPA 8260D/5030BNDn-Butyl Alcohol mg/kg dry 12/19/2412/19/240.006 EPA 8260D/5030BNDn-Butylbenzene mg/kg dry 12/19/2412/19/240.006 EPA 8260D/5030BNDn-Propyl Benzene mg/kg dry 12/19/2412/19/240.006 EPA 8260D/5030BNDPentachloroethane mg/kg dry 12/19/2412/19/240.006 EPA 8260D/5030BNDsec-Butyl Benzene mg/kg dry 12/19/2412/19/240.006 EPA 8260D/5030BNDStyrene mg/kg dry 12/19/2412/19/240.006 EPA 8260D/5030BNDtert-Butylbenzene mg/kg dry 12/19/2412/19/240.006 EPA 8260D/5030BNDTetrachloroethene mg/kg dry 12/19/2412/19/240.006 EPA 8260D/5030B0.007Toluene mg/kg dry 12/19/2412/19/240.006 EPA 8260D/5030BNDtrans-1,2-Dichloroethene mg/kg dry 12/19/2412/19/240.006 EPA 8260D/5030BNDtrans-1,3-Dichloropropene mg/kg dry 12/19/2412/19/240.006 EPA 8260D/5030BNDTrichloroethene Project Name: 23501 Maverik (Chevron), 1350 E 700 S, Clearfield-CtF WO#: 24L1006 www.ChemtechFord.com Page 30 of 54Page 30 of 55 xx Chemtech-Ford Laboratories Serving the Intermountain West Since 1953 Certificate of Analysis 9632 South 500 West Sandy, UT 84070 O:(801) 262-7299 F: (866) 792-0093 www.ChemtechFord.com CMT Technical Services, Inc. Michael Sauerwein 2800 South Redwood Road West Valley City, UT 84119-2375 PO#: Receipt: Date Reported: Project Name: 12/11/24 17:10 @ 4.9 °C 12/26/2024 23501 Maverik (Chevron), 1350 E 700 S, Clearfield-Limited Phase II ESA Sample ID: B-10-9.75' (cont.) Lab ID: 24L1006-10Matrix: Solid Flag(s)Units Analysis Date/Time Date Sampled: 12/11/24 12:40 Preparation Date/Time Sampled By: Michael Sauerwein Minimum Reporting Limit MethodResult Volatile Organic Compounds (cont.) mg/kg dry 12/19/2412/19/240.006 EPA 8260D/5030BNDTrichlorofluoromethane mg/kg dry 12/19/2412/19/240.005 EPA 8260D/5030BNDVinyl Chloride mg/kg dry 12/19/2412/19/240.02 EPA 8260D/5030BNDXylenes, total mg/kg dry 12/19/2412/19/240.06 EPA 8260D/5030B0.08Gasoline Range Organics Project Name: 23501 Maverik (Chevron), 1350 E 700 S, Clearfield-CtF WO#: 24L1006 www.ChemtechFord.com Page 31 of 54Page 31 of 55 xx Chemtech-Ford Laboratories Serving the Intermountain West Since 1953 Certificate of Analysis 9632 South 500 West Sandy, UT 84070 O:(801) 262-7299 F: (866) 792-0093 www.ChemtechFord.com CMT Technical Services, Inc. Michael Sauerwein 2800 South Redwood Road West Valley City, UT 84119-2375 PO#: Receipt: Date Reported: Project Name: 12/11/24 17:10 @ 4.9 °C 12/26/2024 23501 Maverik (Chevron), 1350 E 700 S, Clearfield-Limited Phase II ESA Sample ID: B-11-10' Lab ID: 24L1006-11Matrix: Solid Flag(s)Units Analysis Date/Time Date Sampled: 12/11/24 13:28 Preparation Date/Time Sampled By: Michael Sauerwein Minimum Reporting Limit MethodResult Inorganic %12/12/2412/12/240.1 CTF800083.8Total Solids Diesel Range mg/kg dry 12/18/2412/18/2460EPA 8015 CNDDiesel Range Organics Volatile Organic Compounds mg/kg dry 12/19/2412/19/240.006 EPA 8260D/5030BND1,1,1,2-Tetrachloroethane mg/kg dry 12/19/2412/19/240.006 EPA 8260D/5030BND1,1,1-Trichloroethane mg/kg dry 12/19/2412/19/240.006 EPA 8260D/5030BND1,1,2,2-Tetrachloroethane mg/kg dry 12/19/2412/19/240.006 EPA 8260D/5030BND1,1,2-Trichloroethane mg/kg dry 12/19/2412/19/240.006 EPA 8260D/5030BND1,1,2-Trichlorotrifluoroethane mg/kg dry 12/19/2412/19/240.006 EPA 8260D/5030BND1,1-Dichloroethane mg/kg dry 12/19/2412/19/240.006 EPA 8260D/5030BND1,1-Dichloroethene mg/kg dry 12/19/2412/19/240.006 EPA 8260D/5030BND1,1-Dichloropropene mg/kg dry 12/19/2412/19/240.006 EPA 8260D/5030BND1,2,3-Trichlorobenzene mg/kg dry 12/19/2412/19/240.006 EPA 8260D/5030BND1,2,3-Trichloropropane mg/kg dry 12/19/2412/19/240.006 EPA 8260D/5030BND1,2,4-Trichlorobenzene mg/kg dry 12/19/2412/19/240.006 EPA 8260D/5030BND1,2,4-Trimethylbenzene mg/kg dry 12/19/2412/19/240.006 EPA 8260D/5030BND1,2-Dibromo-3-chloropropane mg/kg dry 12/19/2412/19/240.006 EPA 8260D/5030BND1,2-Dibromoethane (EDB) mg/kg dry 12/19/2412/19/240.006 EPA 8260D/5030BND1,2-Dichlorobenzene mg/kg dry 12/19/2412/19/240.006 EPA 8260D/5030BND1,2-Dichloroethane mg/kg dry 12/19/2412/19/240.006 EPA 8260D/5030BND1,2-Dichloropropane mg/kg dry 12/19/2412/19/240.006 EPA 8260D/5030BND1,3,5-Trimethylbenzene mg/kg dry 12/19/2412/19/240.006 EPA 8260D/5030BND1,3-Dichlorobenzene mg/kg dry 12/19/2412/19/240.006 EPA 8260D/5030BND1,3-Dichloropropane mg/kg dry 12/19/2412/19/240.006 EPA 8260D/5030BND1,4-Dichlorobenzene mg/kg dry 12/19/2412/19/240.006 EPA 8260D/5030BND2,2-Dichloropropane mg/kg dry 12/19/2412/19/240.006 EPA 8260D/5030BND2-Chlorotoluene mg/kg dry 12/19/2412/19/240.01 EPA 8260D/5030BND2-Nitropropane mg/kg dry 12/19/2412/19/240.006 EPA 8260D/5030BND4-Chlorotoluene mg/kg dry 12/19/2412/19/240.006 EPA 8260D/5030BNDp-Isopropyltoluene mg/kg dry 12/19/2412/19/240.12 EPA 8260D/5030BNDAcetone mg/kg dry 12/19/2412/19/240.002 EPA 8260D/5030B0.007Benzene mg/kg dry 12/19/2412/19/240.006 EPA 8260D/5030BNDBromobenzene mg/kg dry 12/19/2412/19/240.006 EPA 8260D/5030BNDBromochloromethane mg/kg dry 12/19/2412/19/240.006 EPA 8260D/5030BNDBromodichloromethane mg/kg dry 12/19/2412/19/240.006 EPA 8260D/5030BNDBromoform Project Name: 23501 Maverik (Chevron), 1350 E 700 S, Clearfield-CtF WO#: 24L1006 www.ChemtechFord.com Page 32 of 54Page 32 of 55 xx Chemtech-Ford Laboratories Serving the Intermountain West Since 1953 Certificate of Analysis 9632 South 500 West Sandy, UT 84070 O:(801) 262-7299 F: (866) 792-0093 www.ChemtechFord.com CMT Technical Services, Inc. Michael Sauerwein 2800 South Redwood Road West Valley City, UT 84119-2375 PO#: Receipt: Date Reported: Project Name: 12/11/24 17:10 @ 4.9 °C 12/26/2024 23501 Maverik (Chevron), 1350 E 700 S, Clearfield-Limited Phase II ESA Sample ID: B-11-10' (cont.) Lab ID: 24L1006-11Matrix: Solid Flag(s)Units Analysis Date/Time Date Sampled: 12/11/24 13:28 Preparation Date/Time Sampled By: Michael Sauerwein Minimum Reporting Limit MethodResult Volatile Organic Compounds (cont.) mg/kg dry 12/19/2412/19/240.01 EPA 8260D/5030BNDBromomethane mg/kg dry 12/19/2412/19/240.01 EPA 8260D/5030BNDCarbon Disulfide mg/kg dry 12/19/2412/19/240.006 EPA 8260D/5030BNDCarbon Tetrachloride mg/kg dry 12/19/2412/19/240.006 EPA 8260D/5030BNDChlorobenzene mg/kg dry 12/19/2412/19/240.006 EPA 8260D/5030BNDChloroethane mg/kg dry 12/19/2412/19/240.006 EPA 8260D/5030BNDChloroform mg/kg dry 12/19/2412/19/240.006 EPA 8260D/5030BNDChloromethane mg/kg dry 12/19/2412/19/240.006 EPA 8260D/5030BNDcis-1,2-Dichloroethene mg/kg dry 12/19/2412/19/240.006 EPA 8260D/5030BNDcis-1,3-Dichloropropene mg/kg dry 12/19/2412/19/240.06 EPA 8260D/5030BNDCyclohexanone mg/kg dry 12/19/2412/19/240.006 EPA 8260D/5030BNDDibromochloromethane mg/kg dry 12/19/2412/19/240.006 EPA 8260D/5030BNDDibromomethane mg/kg dry 12/19/2412/19/240.006 EPA 8260D/5030BNDDichlorodifluoromethane mg/kg dry 12/19/2412/19/240.01 EPA 8260D/5030BNDEthyl Acetate mg/kg dry 12/19/2412/19/240.006 EPA 8260D/5030BNDEthyl Ether mg/kg dry 12/19/2412/19/240.006 EPA 8260D/5030BNDEthylbenzene mg/kg dry 12/19/2412/19/240.006 EPA 8260D/5030BNDHexachlorobutadiene mg/kg dry 12/19/2412/19/240.12 EPA 8260D/5030BNDIsobutanol mg/kg dry 12/19/2412/19/240.006 EPA 8260D/5030BNDIsopropylbenzene mg/kg dry 12/19/2412/19/240.01 EPA 8260D/5030BNDMethyl Ethyl Ketone mg/kg dry 12/19/2412/19/240.03 EPA 8260D/5030BNDMethyl Isobutyl Ketone mg/kg dry 12/19/2412/19/240.006 EPA 8260D/5030BNDMethylene Chloride mg/kg dry 12/19/2412/19/240.004 EPA 8260D/5030BNDMethyl-tert-butyl ether (MTBE) mg/kg dry 12/19/2412/19/240.006 EPA 8260D/5030BNDNaphthalene mg/kg dry 12/19/2412/19/240.31 EPA 8260D/5030BNDn-Butyl Alcohol mg/kg dry 12/19/2412/19/240.006 EPA 8260D/5030BNDn-Butylbenzene mg/kg dry 12/19/2412/19/240.006 EPA 8260D/5030BNDn-Propyl Benzene mg/kg dry 12/19/2412/19/240.006 EPA 8260D/5030BNDPentachloroethane mg/kg dry 12/19/2412/19/240.006 EPA 8260D/5030BNDsec-Butyl Benzene mg/kg dry 12/19/2412/19/240.006 EPA 8260D/5030BNDStyrene mg/kg dry 12/19/2412/19/240.006 EPA 8260D/5030BNDtert-Butylbenzene mg/kg dry 12/19/2412/19/240.006 EPA 8260D/5030BNDTetrachloroethene mg/kg dry 12/19/2412/19/240.006 EPA 8260D/5030B0.02Toluene mg/kg dry 12/19/2412/19/240.006 EPA 8260D/5030BNDtrans-1,2-Dichloroethene mg/kg dry 12/19/2412/19/240.006 EPA 8260D/5030BNDtrans-1,3-Dichloropropene mg/kg dry 12/19/2412/19/240.006 EPA 8260D/5030BNDTrichloroethene Project Name: 23501 Maverik (Chevron), 1350 E 700 S, Clearfield-CtF WO#: 24L1006 www.ChemtechFord.com Page 33 of 54Page 33 of 55 xx Chemtech-Ford Laboratories Serving the Intermountain West Since 1953 Certificate of Analysis 9632 South 500 West Sandy, UT 84070 O:(801) 262-7299 F: (866) 792-0093 www.ChemtechFord.com CMT Technical Services, Inc. Michael Sauerwein 2800 South Redwood Road West Valley City, UT 84119-2375 PO#: Receipt: Date Reported: Project Name: 12/11/24 17:10 @ 4.9 °C 12/26/2024 23501 Maverik (Chevron), 1350 E 700 S, Clearfield-Limited Phase II ESA Sample ID: B-11-10' (cont.) Lab ID: 24L1006-11Matrix: Solid Flag(s)Units Analysis Date/Time Date Sampled: 12/11/24 13:28 Preparation Date/Time Sampled By: Michael Sauerwein Minimum Reporting Limit MethodResult Volatile Organic Compounds (cont.) mg/kg dry 12/19/2412/19/240.006 EPA 8260D/5030BNDTrichlorofluoromethane mg/kg dry 12/19/2412/19/240.005 EPA 8260D/5030BNDVinyl Chloride mg/kg dry 12/19/2412/19/240.02 EPA 8260D/5030B0.02Xylenes, total mg/kg dry 12/19/2412/19/240.06 EPA 8260D/5030B0.12Gasoline Range Organics Project Name: 23501 Maverik (Chevron), 1350 E 700 S, Clearfield-CtF WO#: 24L1006 www.ChemtechFord.com Page 34 of 54Page 34 of 55 xx Chemtech-Ford Laboratories Serving the Intermountain West Since 1953 Certificate of Analysis 9632 South 500 West Sandy, UT 84070 O:(801) 262-7299 F: (866) 792-0093 www.ChemtechFord.com CMT Technical Services, Inc. Michael Sauerwein 2800 South Redwood Road West Valley City, UT 84119-2375 PO#: Receipt: Date Reported: Project Name: 12/11/24 17:10 @ 4.9 °C 12/26/2024 23501 Maverik (Chevron), 1350 E 700 S, Clearfield-Limited Phase II ESA Report Footnotes Abbreviations ND = Not detected at the corresponding Minimum Reporting Limit (MRL). 1 mg/L = one milligram per liter or 1 mg/kg = one milligram per kilogram = 1 part per million. 1 ug/L = one microgram per liter or 1 ug/kg = one microgram per kilogram = 1 part per billion. 1 ng/L = one nanogram per liter or 1 ng/kg = one nanogram per kilogram = 1 part per trillion. On calculated parameters, there may be a slight difference between summing the rounded values shown on the report vs the unrounded values used in the calculation. Flag Descriptions J-LOW-L = Estimated low due to low recovery of LCS Project Name: 23501 Maverik (Chevron), 1350 E 700 S, Clearfield-CtF WO#: 24L1006 www.ChemtechFord.com Page 35 of 54Page 35 of 55 Page 36 of 55 Page 37 of 55 QC Report for Work Order (WO) - 24L1006 % Rec RPD RPD Max MRL DFResultSpk ValueLimitsSource ConcAnalyte Blank - EPA 1664BMod QC Sample ID: BYL0639-BLK1 Batch: BYL0639 Date Prepared: 12/13/2024 Date Analyzed: 12/13/2024 Oil & Grease (HEM)ND 250 1.00 TRPH (SGT-HEM)ND 250 1.00 OG-ND - The total OG was ND for associated samples, therefore TRPH is also ND. QC not required. LCS - EPA 1664BMod QC Sample ID: BYL0639-BS1 Batch: BYL0639 Date Prepared: 12/13/2024 Date Analyzed: 12/13/2024 Oil & Grease (HEM)96.0 78 - 114 1920 2000 250 1.00 TRPH (SGT-HEM)192 64 - 132 1920 1000 250 1.00 OG-ND - The total OG was ND for associated samples, therefore TRPH is also ND. QC not required. LCS Dup - EPA 1664BMod QC Sample ID: BYL0639-BSD1 Batch: BYL0639 Date Prepared: 12/13/2024 Date Analyzed: 12/13/2024 Oil & Grease (HEM)95.8 0.261 78 - 114 18 1920 2000 250 1.00 TRPH (SGT-HEM)192 0.261 64 - 132 34 1920 1000 250 1.00 OG-ND - The total OG was ND for associated samples, therefore TRPH is also ND. QC not required. CtF WO#: 24L1006 www.ChemtechFord.com Page 38 of 55 QC Report for Work Order (WO) - 24L1006 % Rec RPD RPD Max MRL DFResultSpk ValueLimitsSource ConcAnalyte Blank - EPA 6020A QC Sample ID: BYL0737-BLK1 Batch: BYL0737 Date Prepared: 12/17/2024 Date Analyzed: 12/18/2024 Arsenic, Total ND 0.050 1.00 Barium, Total ND 0.30 1.00 Cadmium, Total ND 0.050 1.00 Chromium, Total ND 0.100 1.00 Lead, Total ND 0.060 1.00 Selenium, Total ND 0.060 1.00 Silver, Total ND 0.050 1.00 Matrix Spike - EPA 6020A QC Sample ID: BYL0737-MS1 QC Source Sample: 24L1006-01Batch: BYL0737 Date Prepared: 12/17/2024 Date Analyzed: 12/18/2024 Arsenic, Total 109 75 - 125 20.1 5.11 13.8 1.72 10.00 Barium, Total 507 75 - 125 182 112 13.8 10.3 10.00 QM-05 - The spike recovery was outside acceptance limits for the MS and/or MSD due to matrix interference. The analytical batch was accepted based on the acceptable data provided by the Laboratory Control Sample(s) [LCS] and/or LCS Duplicates. Cadmium, Total 98.9 75 - 125 14.1 0.407 13.8 1.72 10.00 Chromium, Total 98.6 75 - 125 25.6 12.0 13.8 3.45 10.00 Lead, Total 88.9 75 - 125 21.1 8.81 13.8 2.07 10.00 Selenium, Total 67.1 75 - 125 13.2 3.92 13.8 2.07 10.00 QM-06 - Due to non-homogeneity of the sample matrix, the MS/MSD did not provide reliable results for accuracy and precision. Sample results for the QC batch were accepted based on LCS/LCSD percent recoveries and RPD values. Silver, Total 97.1 75 - 125 13.4 ND 13.8 1.72 10.00 Matrix Spike Dup - EPA 6020A QC Sample ID: BYL0737-MSD1 QC Source Sample: 24L1006-01Batch: BYL0737 Date Prepared: 12/17/2024 Date Analyzed: 12/18/2024 Arsenic, Total 97.5 11.4 75 - 125 20 17.9 5.11 13.1 1.64 10.00 Barium, Total 119 34.9 75 - 125 20 128 112 13.1 9.86 10.00 QM-05 - The spike recovery was outside acceptance limits for the MS and/or MSD due to matrix interference. The analytical batch was accepted based on the acceptable data provided by the Laboratory Control Sample(s) [LCS] and/or LCS Duplicates. Cadmium, Total 99.5 4.09 75 - 125 20 13.5 0.407 13.1 1.64 10.00 Chromium, Total 110 3.14 75 - 125 20 26.4 12.0 13.1 3.29 10.00 Lead, Total 103 5.73 75 - 125 20 22.3 8.81 13.1 1.97 10.00 Selenium, Total 103 27.6 75 - 125 20 17.4 3.92 13.1 1.97 10.00 QM-06 - Due to non-homogeneity of the sample matrix, the MS/MSD did not provide reliable results for accuracy and precision. Sample results for the QC batch were accepted based on LCS/LCSD percent recoveries and RPD values. Silver, Total 99.8 2.18 75 - 125 20 13.1 ND 13.1 1.64 10.00 Reference - EPA 6020A QC Sample ID: BYL0737-SRM1 Batch: BYL0737 Date Prepared: 12/17/2024 Date Analyzed: 12/18/2024 Arsenic, Total 107 78 - 144 71.4 66.6 0.192 1.00 Barium, Total 93.0 66 - 110 329 354 1.15 1.00 Cadmium, Total 84.3 62 - 110 77.4 91.8 0.192 1.00 Chromium, Total 82.6 59 - 110 113 137 0.384 1.00 Lead, Total 87.5 63 - 121 216 247 0.230 1.00 Selenium, Total 87.6 50 - 110 82.0 93.6 0.230 1.00 Silver, Total 85.3 58 - 110 68.8 80.6 0.192 1.00 CtF WO#: 24L1006 www.ChemtechFord.com Page 39 of 55 QC Report for Work Order (WO) - 24L1006 % Rec RPD RPD Max MRL DFResultSpk ValueLimitsSource ConcAnalyte Blank - EPA 7471A QC Sample ID: BYL0549-BLK1 Batch: BYL0549 Date Prepared: 12/12/2024 Date Analyzed: 12/16/2024 Mercury, Total ND 0.030 1.00 Matrix Spike - EPA 7471A QC Sample ID: BYL0549-MS1 QC Source Sample: XXXXXXX-XXBatch: BYL0549 Date Prepared: 12/12/2024 Date Analyzed: 12/16/2024 Mercury, Total 81.4 70 - 130 0.775 0.189 0.720 0.026 1.00 Matrix Spike Dup - EPA 7471A QC Sample ID: BYL0549-MSD1 QC Source Sample: XXXXXXX-XXBatch: BYL0549 Date Prepared: 12/12/2024 Date Analyzed: 12/16/2024 Mercury, Total 79.8 3.85 70 - 130 20 0.805 0.189 0.772 0.028 1.00 Reference - EPA 7471A QC Sample ID: BYL0549-SRM1 Batch: BYL0549 Date Prepared: 12/12/2024 Date Analyzed: 12/16/2024 Mercury, Total 100 54.636 - 127.27 11.0 11.0 0.578 10.00 CtF WO#: 24L1006 www.ChemtechFord.com Page 40 of 55 QC Report for Work Order (WO) - 24L1006 % Rec RPD RPD Max MRL DFResultSpk ValueLimitsSource ConcAnalyte Blank - EPA 8015 C QC Sample ID: BYL0712-BLK1 Batch: BYL0712 Date Prepared: 12/16/2024 Date Analyzed: 12/17/2024 Diesel Range Organics ND 50 1.00 QC Sample ID: BYL0856-BLK1 Batch: BYL0856 Date Prepared: 12/18/2024 Date Analyzed: 12/18/2024 Diesel Range Organics ND 50 1.00 LCS - EPA 8015 C QC Sample ID: BYL0712-BS1 Batch: BYL0712 Date Prepared: 12/16/2024 Date Analyzed: 12/17/2024 Diesel Range Organics 92.7 50 - 150 1850 2000 50 1.00 QC Sample ID: BYL0856-BS1 Batch: BYL0856 Date Prepared: 12/18/2024 Date Analyzed: 12/18/2024 Diesel Range Organics 102 50 - 150 2040 2000 50 1.00 Matrix Spike - EPA 8015 C QC Sample ID: BYL0712-MS1 QC Source Sample: XXXXXXX-XXBatch: BYL0712 Date Prepared: 12/16/2024 Date Analyzed: 12/17/2024 Diesel Range Organics 518 50 - 150 11500 147 2190 55 1.00 QC Sample ID: BYL0856-MS1 QC Source Sample: 24L1006-05Batch: BYL0856 Date Prepared: 12/18/2024 Date Analyzed: 12/18/2024 Diesel Range Organics 101 50 - 150 2240 ND 2230 56 1.00 Matrix Spike Dup - EPA 8015 C QC Sample ID: BYL0712-MSD1 QC Source Sample: XXXXXXX-XXBatch: BYL0712 Date Prepared: 12/16/2024 Date Analyzed: 12/17/2024 Diesel Range Organics 545 4.99 50 - 150 20 12100 147 2190 55 1.00 QC Sample ID: BYL0856-MSD1 QC Source Sample: 24L1006-05Batch: BYL0856 Date Prepared: 12/18/2024 Date Analyzed: 12/18/2024 Diesel Range Organics 99.4 1.25 50 - 150 20 2220 ND 2230 56 1.00 CtF WO#: 24L1006 www.ChemtechFord.com Page 41 of 55 QC Report for Work Order (WO) - 24L1006 % Rec RPD RPD Max MRL DFResultSpk ValueLimitsSource ConcAnalyte Blank - EPA 8260D QC Sample ID: BYL0870-BLK1 Batch: BYL0870 Date Prepared: 12/18/2024 Date Analyzed: 12/18/2024 1,1,1,2-Tetrachloroethane ND 0.001 1.00 1,1,1-Trichloroethane ND 0.001 1.00 1,1,2,2-Tetrachloroethane ND 0.001 1.00 1,1,2-Trichloroethane ND 0.001 1.00 1,1,2-Trichlorotrifluoroethane ND 0.001 1.00 1,1-Dichloroethane ND 0.001 1.00 1,1-Dichloroethene ND 0.001 1.00 1,1-Dichloropropene ND 0.001 1.00 1,2,3-Trichlorobenzene ND 0.001 1.00 1,2,3-Trichloropropane ND 0.001 1.00 1,2,4-Trichlorobenzene ND 0.001 1.00 1,2,4-Trimethylbenzene ND 0.001 1.00 1,2-Dibromo-3-chloropropane ND 0.001 1.00 1,2-Dibromoethane (EDB)ND 0.001 1.00 1,2-Dichlorobenzene ND 0.001 1.00 1,2-Dichloroethane ND 0.001 1.00 1,2-Dichloropropane ND 0.001 1.00 1,3,5-Trimethylbenzene ND 0.001 1.00 1,3-Dichlorobenzene ND 0.001 1.00 1,3-Dichloropropane ND 0.001 1.00 1,4-Dichlorobenzene ND 0.001 1.00 2,2-Dichloropropane ND 0.001 1.00 2-Chlorotoluene ND 0.001 1.00 2-Nitropropane ND 0.002 1.00 4-Chlorotoluene ND 0.001 1.00 Acetone ND 0.02 1.00 Benzene ND 0.0004 1.00 Bromobenzene ND 0.001 1.00 Bromochloromethane ND 0.001 1.00 Bromodichloromethane ND 0.001 1.00 Bromoform ND 0.001 1.00 Bromomethane ND 0.002 1.00 Carbon Disulfide ND 0.002 1.00 Carbon Tetrachloride ND 0.001 1.00 Chlorobenzene ND 0.001 1.00 Chloroethane ND 0.001 1.00 Chloroform ND 0.001 1.00 Chloromethane ND 0.001 1.00 cis-1,2-Dichloroethene ND 0.001 1.00 cis-1,3-Dichloropropene ND 0.001 1.00 Cyclohexanone ND 0.01 1.00 Dibromochloromethane ND 0.001 1.00 Dibromomethane ND 0.001 1.00 Dichlorodifluoromethane ND 0.001 1.00 Ethyl Acetate ND 0.002 1.00 Ethyl Ether ND 0.001 1.00 Ethylbenzene ND 0.001 1.00 Hexachlorobutadiene ND 0.001 1.00 Isobutanol ND 0.02 1.00 Isopropylbenzene ND 0.001 1.00 Methyl Ethyl Ketone ND 0.002 1.00 CtF WO#: 24L1006 www.ChemtechFord.com Page 42 of 55 QC Report for Work Order (WO) - 24L1006 % Rec RPD RPD Max MRL DFResultSpk ValueLimitsSource ConcAnalyte Blank - EPA 8260D (cont.) QC Sample ID: BYL0870-BLK1 Batch: BYL0870 Date Prepared: 12/18/2024 Date Analyzed: 12/18/2024 Methyl Isobutyl Ketone ND 0.005 1.00 Methylene Chloride ND 0.001 1.00 Methyl-tert-butyl ether (MTBE)ND 0.0006 1.00 Naphthalene ND 0.001 1.00 n-Butyl Alcohol ND 0.05 1.00 n-Butylbenzene ND 0.001 1.00 n-Propyl Benzene ND 0.001 1.00 Pentachloroethane ND 0.001 1.00 p-Isopropyltoluene ND 0.001 1.00 sec-Butyl Benzene ND 0.001 1.00 Styrene ND 0.001 1.00 tert-Butylbenzene ND 0.001 1.00 Tetrachloroethene ND 0.001 1.00 Toluene ND 0.001 1.00 trans-1,2-Dichloroethene ND 0.001 1.00 trans-1,3-Dichloropropene ND 0.001 1.00 Trichloroethene ND 0.001 1.00 Trichlorofluoromethane ND 0.001 1.00 Vinyl Chloride ND 0.0008 1.00 Xylenes, total ND 0.003 1.00 QC Sample ID: BYL0913-BLK1 Batch: BYL0913 Date Prepared: 12/19/2024 Date Analyzed: 12/19/2024 1,1,1,2-Tetrachloroethane ND 0.001 1.00 1,1,1-Trichloroethane ND 0.001 1.00 1,1,2,2-Tetrachloroethane ND 0.001 1.00 1,1,2-Trichloroethane ND 0.001 1.00 1,1,2-Trichlorotrifluoroethane ND 0.001 1.00 1,1-Dichloroethane ND 0.001 1.00 1,1-Dichloroethene ND 0.001 1.00 1,1-Dichloropropene ND 0.001 1.00 1,2,3-Trichlorobenzene ND 0.001 1.00 1,2,3-Trichloropropane ND 0.001 1.00 1,2,4-Trichlorobenzene ND 0.001 1.00 1,2,4-Trimethylbenzene ND 0.001 1.00 1,2-Dibromo-3-chloropropane ND 0.001 1.00 1,2-Dibromoethane (EDB)ND 0.001 1.00 1,2-Dichlorobenzene ND 0.001 1.00 1,2-Dichloroethane ND 0.001 1.00 1,2-Dichloropropane ND 0.001 1.00 1,3,5-Trimethylbenzene ND 0.001 1.00 1,3-Dichlorobenzene ND 0.001 1.00 1,3-Dichloropropane ND 0.001 1.00 1,4-Dichlorobenzene ND 0.001 1.00 2,2-Dichloropropane ND 0.001 1.00 2-Chlorotoluene ND 0.001 1.00 2-Nitropropane ND 0.002 1.00 4-Chlorotoluene ND 0.001 1.00 Acetone ND 0.02 1.00 Benzene ND 0.0004 1.00 Bromobenzene ND 0.001 1.00 CtF WO#: 24L1006 www.ChemtechFord.com Page 43 of 55 QC Report for Work Order (WO) - 24L1006 % Rec RPD RPD Max MRL DFResultSpk ValueLimitsSource ConcAnalyte Blank - EPA 8260D (cont.) QC Sample ID: BYL0913-BLK1 Batch: BYL0913 Date Prepared: 12/19/2024 Date Analyzed: 12/19/2024 Bromochloromethane ND 0.001 1.00 Bromodichloromethane ND 0.001 1.00 Bromoform ND 0.001 1.00 Bromomethane ND 0.002 1.00 Carbon Disulfide ND 0.002 1.00 Carbon Tetrachloride ND 0.001 1.00 Chlorobenzene ND 0.001 1.00 Chloroethane ND 0.001 1.00 Chloroform ND 0.001 1.00 Chloromethane ND 0.001 1.00 cis-1,2-Dichloroethene ND 0.001 1.00 cis-1,3-Dichloropropene ND 0.001 1.00 Cyclohexanone ND 0.01 1.00 Dibromochloromethane ND 0.001 1.00 Dibromomethane ND 0.001 1.00 Dichlorodifluoromethane ND 0.001 1.00 Ethyl Acetate ND 0.002 1.00 Ethyl Ether ND 0.001 1.00 Ethylbenzene ND 0.001 1.00 Hexachlorobutadiene ND 0.001 1.00 Isobutanol ND 0.02 1.00 Isopropylbenzene ND 0.001 1.00 Methyl Ethyl Ketone ND 0.002 1.00 Methyl Isobutyl Ketone ND 0.005 1.00 Methylene Chloride ND 0.001 1.00 Methyl-tert-butyl ether (MTBE)ND 0.0006 1.00 Naphthalene ND 0.001 1.00 n-Butyl Alcohol ND 0.05 1.00 n-Butylbenzene ND 0.001 1.00 n-Propyl Benzene ND 0.001 1.00 Pentachloroethane ND 0.001 1.00 p-Isopropyltoluene ND 0.001 1.00 sec-Butyl Benzene ND 0.001 1.00 Styrene ND 0.001 1.00 tert-Butylbenzene ND 0.001 1.00 Tetrachloroethene ND 0.001 1.00 Toluene ND 0.001 1.00 trans-1,2-Dichloroethene ND 0.001 1.00 trans-1,3-Dichloropropene ND 0.001 1.00 Trichloroethene ND 0.001 1.00 Trichlorofluoromethane ND 0.001 1.00 Vinyl Chloride ND 0.0008 1.00 Xylenes, total ND 0.003 1.00 LCS - EPA 8260D QC Sample ID: BYL0870-BS1 Batch: BYL0870 Date Prepared: 12/18/2024 Date Analyzed: 12/18/2024 1,1,1,2-Tetrachloroethane 116 70 - 130 0.01 0.0100 0.001 1.00 1,1,1-Trichloroethane 93.7 70 - 130 0.009 0.0100 0.001 1.00 1,1,2,2-Tetrachloroethane 98.3 70 - 130 0.01 0.0100 0.001 1.00 1,1,2-Trichloroethane 95.0 70 - 130 0.01 0.0100 0.001 1.00 CtF WO#: 24L1006 www.ChemtechFord.com Page 44 of 55 QC Report for Work Order (WO) - 24L1006 % Rec RPD RPD Max MRL DFResultSpk ValueLimitsSource ConcAnalyte LCS - EPA 8260D (cont.) QC Sample ID: BYL0870-BS1 Batch: BYL0870 Date Prepared: 12/18/2024 Date Analyzed: 12/18/2024 1,1,2-Trichlorotrifluoroethane 155 70 - 130 0.02 0.0100 0.001 1.00 HB - Recovery for this parameter exceeded the upper acceptance limit. Associated sample(s) were all non-detect and therefore accepted and reported for this parameter. 1,1-Dichloroethane 79.2 70 - 130 0.008 0.0100 0.001 1.00 1,1-Dichloroethene 91.4 70 - 130 0.009 0.0100 0.001 1.00 1,1-Dichloropropene 101 70 - 130 0.01 0.0100 0.001 1.00 1,2,3-Trichlorobenzene 106 70 - 130 0.01 0.0100 0.001 1.00 1,2,3-Trichloropropane 106 70 - 130 0.01 0.0100 0.001 1.00 1,2,4-Trichlorobenzene 116 70 - 130 0.01 0.0100 0.001 1.00 1,2,4-Trimethylbenzene 110 70 - 130 0.01 0.0100 0.001 1.00 1,2-Dibromo-3-chloropropane 94.8 70 - 130 0.009 0.0100 0.001 1.00 1,2-Dibromoethane (EDB)112 70 - 130 0.01 0.0100 0.001 1.00 1,2-Dichlorobenzene 114 70 - 130 0.01 0.0100 0.001 1.00 1,2-Dichloroethane 87.6 70 - 130 0.009 0.0100 0.001 1.00 1,2-Dichloropropane 91.1 70 - 130 0.009 0.0100 0.001 1.00 1,3,5-Trimethylbenzene 110 70 - 130 0.01 0.0100 0.001 1.00 1,3-Dichlorobenzene 115 70 - 130 0.01 0.0100 0.001 1.00 1,3-Dichloropropane 99.2 70 - 130 0.01 0.0100 0.001 1.00 1,4-Dichlorobenzene 113 70 - 130 0.01 0.0100 0.001 1.00 2,2-Dichloropropane 88.4 70 - 130 0.009 0.0100 0.001 1.00 2-Chlorotoluene 112 70 - 130 0.01 0.0100 0.001 1.00 2-Nitropropane 75.4 70 - 130 0.02 0.0200 0.002 1.00 4-Chlorotoluene 113 70 - 130 0.01 0.0100 0.001 1.00 Acetone 82.1 70 - 130 0.08 0.100 0.02 1.00 Benzene 97.3 70 - 130 0.01 0.0100 0.0004 1.00 Bromobenzene 114 70 - 130 0.01 0.0100 0.001 1.00 Bromochloromethane 88.9 70 - 130 0.009 0.0100 0.001 1.00 Bromodichloromethane 101 70 - 130 0.01 0.0100 0.001 1.00 Bromoform 115 70 - 130 0.01 0.0100 0.001 1.00 Bromomethane 103 70 - 130 0.01 0.0100 0.002 1.00 Carbon Disulfide 145 70 - 130 0.01 0.0100 0.002 1.00 HB - Recovery for this parameter exceeded the upper acceptance limit. Associated sample(s) were all non-detect and therefore accepted and reported for this parameter. Carbon Tetrachloride 123 70 - 130 0.01 0.0100 0.001 1.00 Chlorobenzene 110 70 - 130 0.01 0.0100 0.001 1.00 Chloroethane 87.8 70 - 130 0.009 0.0100 0.001 1.00 Chloroform 84.7 70 - 130 0.008 0.0100 0.001 1.00 Chloromethane 81.7 70 - 130 0.008 0.0100 0.001 1.00 cis-1,2-Dichloroethene 86.1 70 - 130 0.009 0.0100 0.001 1.00 cis-1,3-Dichloropropene 95.5 70 - 130 0.01 0.0100 0.001 1.00 Cyclohexanone 105 70 - 130 0.11 0.100 0.01 1.00 Dibromochloromethane 115 70 - 130 0.01 0.0100 0.001 1.00 Dibromomethane 115 70 - 130 0.01 0.0100 0.001 1.00 Dichlorodifluoromethane 111 70 - 130 0.01 0.0100 0.001 1.00 Ethyl Acetate 80.0 70 - 130 0.02 0.0200 0.002 1.00 Ethyl Ether 87.5 70 - 130 0.009 0.0100 0.001 1.00 Ethylbenzene 110 70 - 130 0.01 0.0100 0.001 1.00 Hexachlorobutadiene 113 70 - 130 0.01 0.0100 0.001 1.00 Isobutanol 77.4 70 - 130 0.15 0.200 0.02 1.00 Isopropylbenzene 110 70 - 130 0.01 0.0100 0.001 1.00 Methyl Ethyl Ketone 105 70 - 130 0.01 0.0100 0.002 1.00 CtF WO#: 24L1006 www.ChemtechFord.com Page 45 of 55 QC Report for Work Order (WO) - 24L1006 % Rec RPD RPD Max MRL DFResultSpk ValueLimitsSource ConcAnalyte LCS - EPA 8260D (cont.) QC Sample ID: BYL0870-BS1 Batch: BYL0870 Date Prepared: 12/18/2024 Date Analyzed: 12/18/2024 Methyl Isobutyl Ketone 92.3 70 - 130 0.009 0.0100 0.005 1.00 Methylene Chloride 82.5 70 - 130 0.008 0.0100 0.001 1.00 Methyl-tert-butyl ether (MTBE)70 - 130 ND 0.0100 0.0006 1.00 J-LOW-L - Estimated low due to low recovery of LCS Naphthalene 102 70 - 130 0.01 0.0100 0.001 1.00 n-Butyl Alcohol 66.4 70 - 130 0.07 0.100 0.05 1.00 J-LOW-L - Estimated low due to low recovery of LCS n-Butylbenzene 111 70 - 130 0.01 0.0100 0.001 1.00 n-Propyl Benzene 114 70 - 130 0.01 0.0100 0.001 1.00 Pentachloroethane 101 70 - 130 0.01 0.0100 0.001 1.00 p-Isopropyltoluene 110 70 - 130 0.01 0.0100 0.001 1.00 sec-Butyl Benzene 114 70 - 130 0.01 0.0100 0.001 1.00 Styrene 105 70 - 130 0.01 0.0100 0.001 1.00 tert-Butylbenzene 115 70 - 130 0.01 0.0100 0.001 1.00 Tetrachloroethene 121 70 - 130 0.01 0.0100 0.001 1.00 Toluene 97.4 70 - 130 0.01 0.0100 0.001 1.00 trans-1,2-Dichloroethene 90.5 70 - 130 0.009 0.0100 0.001 1.00 trans-1,3-Dichloropropene 98.1 70 - 130 0.01 0.0100 0.001 1.00 Trichloroethene 113 70 - 130 0.01 0.0100 0.001 1.00 Trichlorofluoromethane 94.7 70 - 130 0.009 0.0100 0.001 1.00 Vinyl Chloride 87.6 70 - 130 0.009 0.0100 0.0008 1.00 Xylenes, total 109 70 - 130 0.03 0.0300 0.003 1.00 QC Sample ID: BYL0913-BS1 Batch: BYL0913 Date Prepared: 12/19/2024 Date Analyzed: 12/19/2024 1,1,1,2-Tetrachloroethane 116 70 - 130 0.01 0.0100 0.001 1.00 1,1,1-Trichloroethane 96.2 70 - 130 0.01 0.0100 0.001 1.00 1,1,2,2-Tetrachloroethane 101 70 - 130 0.01 0.0100 0.001 1.00 1,1,2-Trichloroethane 99.5 70 - 130 0.01 0.0100 0.001 1.00 1,1,2-Trichlorotrifluoroethane 165 70 - 130 0.02 0.0100 0.001 1.00 HB - Recovery for this parameter exceeded the upper acceptance limit. Associated sample(s) were all non-detect and therefore accepted and reported for this parameter. 1,1-Dichloroethane 77.8 70 - 130 0.008 0.0100 0.001 1.00 1,1-Dichloroethene 96.3 70 - 130 0.01 0.0100 0.001 1.00 1,1-Dichloropropene 101 70 - 130 0.01 0.0100 0.001 1.00 1,2,3-Trichlorobenzene 114 70 - 130 0.01 0.0100 0.001 1.00 1,2,3-Trichloropropane 110 70 - 130 0.01 0.0100 0.001 1.00 1,2,4-Trichlorobenzene 121 70 - 130 0.01 0.0100 0.001 1.00 1,2,4-Trimethylbenzene 113 70 - 130 0.01 0.0100 0.001 1.00 1,2-Dibromo-3-chloropropane 94.7 70 - 130 0.009 0.0100 0.001 1.00 1,2-Dibromoethane (EDB)114 70 - 130 0.01 0.0100 0.001 1.00 1,2-Dichlorobenzene 115 70 - 130 0.01 0.0100 0.001 1.00 1,2-Dichloroethane 89.8 70 - 130 0.009 0.0100 0.001 1.00 1,2-Dichloropropane 91.8 70 - 130 0.009 0.0100 0.001 1.00 1,3,5-Trimethylbenzene 113 70 - 130 0.01 0.0100 0.001 1.00 1,3-Dichlorobenzene 117 70 - 130 0.01 0.0100 0.001 1.00 1,3-Dichloropropane 100 70 - 130 0.01 0.0100 0.001 1.00 1,4-Dichlorobenzene 117 70 - 130 0.01 0.0100 0.001 1.00 2,2-Dichloropropane 76.4 70 - 130 0.008 0.0100 0.001 1.00 2-Chlorotoluene 114 70 - 130 0.01 0.0100 0.001 1.00 2-Nitropropane 80.4 70 - 130 0.02 0.0200 0.002 1.00 4-Chlorotoluene 116 70 - 130 0.01 0.0100 0.001 1.00 CtF WO#: 24L1006 www.ChemtechFord.com Page 46 of 55 QC Report for Work Order (WO) - 24L1006 % Rec RPD RPD Max MRL DFResultSpk ValueLimitsSource ConcAnalyte LCS - EPA 8260D (cont.) QC Sample ID: BYL0913-BS1 Batch: BYL0913 Date Prepared: 12/19/2024 Date Analyzed: 12/19/2024 Acetone 94.6 70 - 130 0.09 0.100 0.02 1.00 Benzene 97.2 70 - 130 0.01 0.0100 0.0004 1.00 Bromobenzene 116 70 - 130 0.01 0.0100 0.001 1.00 Bromochloromethane 89.5 70 - 130 0.009 0.0100 0.001 1.00 Bromodichloromethane 102 70 - 130 0.01 0.0100 0.001 1.00 Bromoform 118 70 - 130 0.01 0.0100 0.001 1.00 Bromomethane 96.8 70 - 130 0.01 0.0100 0.002 1.00 Carbon Disulfide 153 70 - 130 0.02 0.0100 0.002 1.00 HB - Recovery for this parameter exceeded the upper acceptance limit. Associated sample(s) were all non-detect and therefore accepted and reported for this parameter. Carbon Tetrachloride 122 70 - 130 0.01 0.0100 0.001 1.00 Chlorobenzene 110 70 - 130 0.01 0.0100 0.001 1.00 Chloroethane 89.4 70 - 130 0.009 0.0100 0.001 1.00 Chloroform 87.2 70 - 130 0.009 0.0100 0.001 1.00 Chloromethane 81.2 70 - 130 0.008 0.0100 0.001 1.00 cis-1,2-Dichloroethene 89.7 70 - 130 0.009 0.0100 0.001 1.00 cis-1,3-Dichloropropene 97.3 70 - 130 0.01 0.0100 0.001 1.00 Cyclohexanone 119 70 - 130 0.12 0.100 0.01 1.00 Dibromochloromethane 117 70 - 130 0.01 0.0100 0.001 1.00 Dibromomethane 116 70 - 130 0.01 0.0100 0.001 1.00 Dichlorodifluoromethane 108 70 - 130 0.01 0.0100 0.001 1.00 Ethyl Acetate 95.7 70 - 130 0.02 0.0200 0.002 1.00 Ethyl Ether 97.9 70 - 130 0.01 0.0100 0.001 1.00 Ethylbenzene 112 70 - 130 0.01 0.0100 0.001 1.00 Hexachlorobutadiene 120 70 - 130 0.01 0.0100 0.001 1.00 Isobutanol 93.5 70 - 130 0.19 0.200 0.02 1.00 Isopropylbenzene 114 70 - 130 0.01 0.0100 0.001 1.00 Methyl Ethyl Ketone 114 70 - 130 0.01 0.0100 0.002 1.00 Methyl Isobutyl Ketone 99.7 70 - 130 0.01 0.0100 0.005 1.00 Methylene Chloride 84.0 70 - 130 0.008 0.0100 0.001 1.00 Methyl-tert-butyl ether (MTBE)70 - 130 ND 0.0100 0.0006 1.00 HB - Recovery for this parameter exceeded the upper acceptance limit. Associated sample(s) were all non-detect and therefore accepted and reported for this parameter. Naphthalene 106 70 - 130 0.01 0.0100 0.001 1.00 n-Butyl Alcohol 77.0 70 - 130 0.08 0.100 0.05 1.00 n-Butylbenzene 121 70 - 130 0.01 0.0100 0.001 1.00 n-Propyl Benzene 116 70 - 130 0.01 0.0100 0.001 1.00 Pentachloroethane 116 70 - 130 0.01 0.0100 0.001 1.00 p-Isopropyltoluene 120 70 - 130 0.01 0.0100 0.001 1.00 sec-Butyl Benzene 121 70 - 130 0.01 0.0100 0.001 1.00 Styrene 107 70 - 130 0.01 0.0100 0.001 1.00 tert-Butylbenzene 119 70 - 130 0.01 0.0100 0.001 1.00 Tetrachloroethene 122 70 - 130 0.01 0.0100 0.001 1.00 Toluene 98.3 70 - 130 0.01 0.0100 0.001 1.00 trans-1,2-Dichloroethene 92.2 70 - 130 0.009 0.0100 0.001 1.00 trans-1,3-Dichloropropene 99.2 70 - 130 0.01 0.0100 0.001 1.00 Trichloroethene 114 70 - 130 0.01 0.0100 0.001 1.00 Trichlorofluoromethane 97.2 70 - 130 0.01 0.0100 0.001 1.00 Vinyl Chloride 88.7 70 - 130 0.009 0.0100 0.0008 1.00 Xylenes, total 110 70 - 130 0.03 0.0300 0.003 1.00 Matrix Spike - EPA 8260D CtF WO#: 24L1006 www.ChemtechFord.com Page 47 of 55 QC Report for Work Order (WO) - 24L1006 % Rec RPD RPD Max MRL DFResultSpk ValueLimitsSource ConcAnalyte Matrix Spike - EPA 8260D (cont.) QC Sample ID: BYL0870-MS1 QC Source Sample: XXXXXXX-XXBatch: BYL0870 Date Prepared: 12/18/2024 Date Analyzed: 12/18/2024 1,1,1,2-Tetrachloroethane 110 70 - 130 3.32 ND 3.03 0.30 1.00 1,1,1-Trichloroethane 89.4 70 - 130 2.71 ND 3.03 0.30 1.00 1,1,2,2-Tetrachloroethane 98.7 70 - 130 2.99 ND 3.03 0.30 1.00 1,1,2-Trichloroethane 96.5 70 - 130 2.92 ND 3.03 0.30 1.00 1,1,2-Trichlorotrifluoroethane 143 70 - 130 4.34 ND 3.03 0.30 1.00 HB - Recovery for this parameter exceeded the upper acceptance limit. Associated sample(s) were all non-detect and therefore accepted and reported for this parameter. 1,1-Dichloroethane 80.6 70 - 130 2.44 ND 3.03 0.30 1.00 1,1-Dichloroethene 92.2 70 - 130 2.79 ND 3.03 0.30 1.00 1,1-Dichloropropene 95.6 70 - 130 2.89 ND 3.03 0.30 1.00 1,2,3-Trichlorobenzene 102 70 - 130 3.09 ND 3.03 0.30 1.00 1,2,3-Trichloropropane 103 70 - 130 3.12 ND 3.03 0.30 1.00 1,2,4-Trichlorobenzene 108 70 - 130 3.26 ND 3.03 0.30 1.00 1,2,4-Trimethylbenzene 103 70 - 130 3.11 ND 3.03 0.30 1.00 1,2-Dibromo-3-chloropropane 94.2 70 - 130 2.85 ND 3.03 0.30 1.00 1,2-Dibromoethane (EDB)110 70 - 130 3.34 ND 3.03 0.30 1.00 1,2-Dichlorobenzene 108 70 - 130 3.29 ND 3.03 0.30 1.00 1,2-Dichloroethane 87.4 70 - 130 2.65 ND 3.03 0.30 1.00 1,2-Dichloropropane 90.0 70 - 130 2.73 ND 3.03 0.30 1.00 1,3,5-Trimethylbenzene 102 70 - 130 3.10 ND 3.03 0.30 1.00 1,3-Dichlorobenzene 108 70 - 130 3.27 ND 3.03 0.30 1.00 1,3-Dichloropropane 96.7 70 - 130 2.93 ND 3.03 0.30 1.00 1,4-Dichlorobenzene 112 70 - 130 3.38 ND 3.03 0.30 1.00 2,2-Dichloropropane 70.9 70 - 130 2.15 ND 3.03 0.30 1.00 2-Chlorotoluene 107 70 - 130 3.24 ND 3.03 0.30 1.00 2-Nitropropane 70.2 70 - 130 4.25 ND 6.06 0.61 1.00 4-Chlorotoluene 108 70 - 130 3.25 ND 3.03 0.30 1.00 Acetone 82.4 70 - 130 25.0 ND 30.3 6.06 1.00 Benzene 94.2 70 - 130 2.85 ND 3.03 0.12 1.00 Bromobenzene 112 70 - 130 3.39 ND 3.03 0.30 1.00 Bromochloromethane 89.5 70 - 130 2.71 ND 3.03 0.30 1.00 Bromodichloromethane 97.1 70 - 130 2.94 ND 3.03 0.30 1.00 Bromoform 110 70 - 130 3.33 ND 3.03 0.30 1.00 Bromomethane 89.3 70 - 130 2.70 ND 3.03 0.61 1.00 Carbon Disulfide 141 70 - 130 4.26 ND 3.03 0.61 1.00 HB - Recovery for this parameter exceeded the upper acceptance limit. Associated sample(s) were all non-detect and therefore accepted and reported for this parameter. Carbon Tetrachloride 114 70 - 130 3.45 ND 3.03 0.30 1.00 Chlorobenzene 106 70 - 130 3.20 ND 3.03 0.30 1.00 Chloroethane 89.9 70 - 130 2.72 ND 3.03 0.30 1.00 Chloroform 83.2 70 - 130 2.52 ND 3.03 0.30 1.00 Chloromethane 79.3 70 - 130 2.40 ND 3.03 0.30 1.00 cis-1,2-Dichloroethene 85.5 70 - 130 2.59 ND 3.03 0.30 1.00 cis-1,3-Dichloropropene 91.9 70 - 130 2.78 ND 3.03 0.30 1.00 Cyclohexanone 89.7 70 - 130 27.2 ND 30.3 3.03 1.00 Dibromochloromethane 110 70 - 130 3.34 ND 3.03 0.30 1.00 Dibromomethane 114 70 - 130 3.46 ND 3.03 0.30 1.00 Dichlorodifluoromethane 105 70 - 130 3.18 ND 3.03 0.30 1.00 Ethyl Acetate 81.4 70 - 130 4.93 ND 6.06 0.61 1.00 Ethyl Ether 89.6 70 - 130 2.71 ND 3.03 0.30 1.00 Ethylbenzene 108 70 - 130 3.26 ND 3.03 0.30 1.00 CtF WO#: 24L1006 www.ChemtechFord.com Page 48 of 55 QC Report for Work Order (WO) - 24L1006 % Rec RPD RPD Max MRL DFResultSpk ValueLimitsSource ConcAnalyte Matrix Spike - EPA 8260D (cont.) QC Sample ID: BYL0870-MS1 QC Source Sample: XXXXXXX-XXBatch: BYL0870 Date Prepared: 12/18/2024 Date Analyzed: 12/18/2024 Hexachlorobutadiene 87.5 70 - 130 2.65 ND 3.03 0.30 1.00 Isobutanol 71.5 70 - 130 43.3 ND 60.6 6.06 1.00 Isopropylbenzene 103 70 - 130 3.12 ND 3.03 0.30 1.00 Methyl Ethyl Ketone 102 70 - 130 3.10 ND 3.03 0.61 1.00 Methyl Isobutyl Ketone 94.3 70 - 130 2.86 ND 3.03 1.51 1.00 Methylene Chloride 85.8 70 - 130 2.60 ND 3.03 0.30 1.00 Methyl-tert-butyl ether (MTBE)70 - 130 ND ND 3.03 0.18 1.00 MS-Low - Estimated low due to Matrix Spike recovery. Naphthalene 99.7 70 - 130 3.02 ND 3.03 0.30 1.00 n-Butyl Alcohol 58.0 70 - 130 17.6 ND 30.3 15.1 1.00 MS-Low - Estimated low due to Matrix Spike recovery. n-Butylbenzene 98.8 70 - 130 2.99 ND 3.03 0.30 1.00 n-Propyl Benzene 103 70 - 130 3.12 ND 3.03 0.30 1.00 Pentachloroethane 95.3 70 - 130 2.89 ND 3.03 0.30 1.00 p-Isopropyltoluene 101 70 - 130 3.05 ND 3.03 0.30 1.00 sec-Butyl Benzene 102 70 - 130 3.09 ND 3.03 0.30 1.00 Styrene 103 70 - 130 3.12 ND 3.03 0.30 1.00 tert-Butylbenzene 105 70 - 130 3.19 ND 3.03 0.30 1.00 Tetrachloroethene 114 70 - 130 3.46 ND 3.03 0.30 1.00 Toluene 94.2 70 - 130 2.85 ND 3.03 0.30 1.00 trans-1,2-Dichloroethene 88.1 70 - 130 2.67 ND 3.03 0.30 1.00 trans-1,3-Dichloropropene 94.3 70 - 130 2.86 ND 3.03 0.30 1.00 Trichloroethene 114 70 - 130 3.46 ND 3.03 0.30 1.00 Trichlorofluoromethane 93.7 70 - 130 2.84 ND 3.03 0.30 1.00 Vinyl Chloride 82.5 70 - 130 2.50 ND 3.03 0.24 1.00 Xylenes, total 113 70 - 130 10.3 ND 9.08 0.91 1.00 QC Sample ID: BYL0913-MS1 QC Source Sample: 24L1006-03Batch: BYL0913 Date Prepared: 12/19/2024 Date Analyzed: 12/19/2024 1,1,1,2-Tetrachloroethane 94.3 70 - 130 0.26 ND 0.272 0.03 1.00 1,1,1-Trichloroethane 67.6 70 - 130 0.18 ND 0.272 0.03 1.00 QM-RPD - The recovery was outside acceptance limits for the MS and/or MSD. The RPD between the MS and MSD was acceptable and indicates the recovery is due to matrix interference. The batch was accepted based on the acceptable recovery of the LCS and the RPD. 1,1,2,2-Tetrachloroethane 96.1 70 - 130 0.26 ND 0.272 0.03 1.00 1,1,2-Trichloroethane 90.5 70 - 130 0.25 ND 0.272 0.03 1.00 1,1,2-Trichlorotrifluoroethane 107 70 - 130 0.29 ND 0.272 0.03 1.00 1,1-Dichloroethane 57.3 70 - 130 0.16 ND 0.272 0.03 1.00 QM-RPD - The recovery was outside acceptance limits for the MS and/or MSD. The RPD between the MS and MSD was acceptable and indicates the recovery is due to matrix interference. The batch was accepted based on the acceptable recovery of the LCS and the RPD. 1,1-Dichloroethene 70.2 70 - 130 0.19 ND 0.272 0.03 1.00 1,1-Dichloropropene 69.5 70 - 130 0.19 ND 0.272 0.03 1.00 QM-RPD - The recovery was outside acceptance limits for the MS and/or MSD. The RPD between the MS and MSD was acceptable and indicates the recovery is due to matrix interference. The batch was accepted based on the acceptable recovery of the LCS and the RPD. 1,2,3-Trichlorobenzene 99.7 70 - 130 0.27 ND 0.272 0.03 1.00 1,2,3-Trichloropropane 100 70 - 130 0.27 ND 0.272 0.03 1.00 1,2,4-Trichlorobenzene 104 70 - 130 0.28 ND 0.272 0.03 1.00 1,2,4-Trimethylbenzene 90.3 70 - 130 0.25 ND 0.272 0.03 1.00 1,2-Dibromo-3-chloropropane 94.3 70 - 130 0.26 ND 0.272 0.03 1.00 1,2-Dibromoethane (EDB)103 70 - 130 0.28 ND 0.272 0.03 1.00 CtF WO#: 24L1006 www.ChemtechFord.com Page 49 of 55 QC Report for Work Order (WO) - 24L1006 % Rec RPD RPD Max MRL DFResultSpk ValueLimitsSource ConcAnalyte Matrix Spike - EPA 8260D (cont.) QC Sample ID: BYL0913-MS1 QC Source Sample: 24L1006-03Batch: BYL0913 Date Prepared: 12/19/2024 Date Analyzed: 12/19/2024 1,2-Dichlorobenzene 98.3 70 - 130 0.27 ND 0.272 0.03 1.00 1,2-Dichloroethane 77.7 70 - 130 0.21 ND 0.272 0.03 1.00 1,2-Dichloropropane 74.9 70 - 130 0.20 ND 0.272 0.03 1.00 1,3,5-Trimethylbenzene 87.6 70 - 130 0.24 ND 0.272 0.03 1.00 1,3-Dichlorobenzene 95.3 70 - 130 0.26 ND 0.272 0.03 1.00 1,3-Dichloropropane 88.6 70 - 130 0.24 ND 0.272 0.03 1.00 1,4-Dichlorobenzene 97.0 70 - 130 0.26 ND 0.272 0.03 1.00 2,2-Dichloropropane 65.8 70 - 130 0.18 ND 0.272 0.03 1.00 QM-RPD - The recovery was outside acceptance limits for the MS and/or MSD. The RPD between the MS and MSD was acceptable and indicates the recovery is due to matrix interference. The batch was accepted based on the acceptable recovery of the LCS and the RPD. 2-Chlorotoluene 90.0 70 - 130 0.24 ND 0.272 0.03 1.00 2-Nitropropane 66.2 70 - 130 0.36 ND 0.544 0.05 1.00 QM-RPD - The recovery was outside acceptance limits for the MS and/or MSD. The RPD between the MS and MSD was acceptable and indicates the recovery is due to matrix interference. The batch was accepted based on the acceptable recovery of the LCS and the RPD. 4-Chlorotoluene 91.1 70 - 130 0.25 ND 0.272 0.03 1.00 Acetone 89.2 70 - 130 2.43 ND 2.72 0.54 1.00 Benzene 74.5 70 - 130 0.22 0.01 0.272 0.01 1.00 Bromobenzene 95.4 70 - 130 0.26 ND 0.272 0.03 1.00 Bromochloromethane 80.9 70 - 130 0.22 ND 0.272 0.03 1.00 Bromodichloromethane 85.4 70 - 130 0.23 ND 0.272 0.03 1.00 Bromoform 103 70 - 130 0.28 ND 0.272 0.03 1.00 Bromomethane 74.3 70 - 130 0.20 ND 0.272 0.05 1.00 Carbon Disulfide 109 70 - 130 0.30 ND 0.272 0.05 1.00 Carbon Tetrachloride 83.7 70 - 130 0.23 ND 0.272 0.03 1.00 Chlorobenzene 88.0 70 - 130 0.24 ND 0.272 0.03 1.00 Chloroethane 66.6 70 - 130 0.18 ND 0.272 0.03 1.00 QM-RPD - The recovery was outside acceptance limits for the MS and/or MSD. The RPD between the MS and MSD was acceptable and indicates the recovery is due to matrix interference. The batch was accepted based on the acceptable recovery of the LCS and the RPD. Chloroform 68.5 70 - 130 0.19 ND 0.272 0.03 1.00 QM-RPD - The recovery was outside acceptance limits for the MS and/or MSD. The RPD between the MS and MSD was acceptable and indicates the recovery is due to matrix interference. The batch was accepted based on the acceptable recovery of the LCS and the RPD. Chloromethane 61.7 70 - 130 0.17 ND 0.272 0.03 1.00 QM-RPD - The recovery was outside acceptance limits for the MS and/or MSD. The RPD between the MS and MSD was acceptable and indicates the recovery is due to matrix interference. The batch was accepted based on the acceptable recovery of the LCS and the RPD. cis-1,2-Dichloroethene 69.8 70 - 130 0.19 ND 0.272 0.03 1.00 QM-RPD - The recovery was outside acceptance limits for the MS and/or MSD. The RPD between the MS and MSD was acceptable and indicates the recovery is due to matrix interference. The batch was accepted based on the acceptable recovery of the LCS and the RPD. cis-1,3-Dichloropropene 81.4 70 - 130 0.22 ND 0.272 0.03 1.00 Cyclohexanone 112 70 - 130 3.06 ND 2.72 0.27 1.00 Dibromochloromethane 99.9 70 - 130 0.27 ND 0.272 0.03 1.00 Dibromomethane 105 70 - 130 0.28 ND 0.272 0.03 1.00 Dichlorodifluoromethane 73.9 70 - 130 0.20 ND 0.272 0.03 1.00 Ethyl Acetate 85.6 70 - 130 0.47 ND 0.544 0.05 1.00 Ethyl Ether 82.4 70 - 130 0.22 ND 0.272 0.03 1.00 Ethylbenzene 85.3 70 - 130 0.23 ND 0.272 0.03 1.00 Hexachlorobutadiene 80.9 70 - 130 0.22 ND 0.272 0.03 1.00 Isobutanol 89.2 70 - 130 4.85 ND 5.44 0.54 1.00 CtF WO#: 24L1006 www.ChemtechFord.com Page 50 of 55 QC Report for Work Order (WO) - 24L1006 % Rec RPD RPD Max MRL DFResultSpk ValueLimitsSource ConcAnalyte Matrix Spike - EPA 8260D (cont.) QC Sample ID: BYL0913-MS1 QC Source Sample: 24L1006-03Batch: BYL0913 Date Prepared: 12/19/2024 Date Analyzed: 12/19/2024 Isopropylbenzene 82.8 70 - 130 0.23 ND 0.272 0.03 1.00 Methyl Ethyl Ketone 113 70 - 130 0.31 ND 0.272 0.05 1.00 Methyl Isobutyl Ketone 93.5 70 - 130 0.25 ND 0.272 0.14 1.00 Methylene Chloride 72.3 70 - 130 0.20 ND 0.272 0.03 1.00 Methyl-tert-butyl ether (MTBE)70 - 130 ND ND 0.272 0.02 1.00 QM-RPD - The recovery was outside acceptance limits for the MS and/or MSD. The RPD between the MS and MSD was acceptable and indicates the recovery is due to matrix interference. The batch was accepted based on the acceptable recovery of the LCS and the RPD. Naphthalene 100 70 - 130 0.27 ND 0.272 0.03 1.00 n-Butyl Alcohol 71.8 70 - 130 1.95 ND 2.72 1.36 1.00 n-Butylbenzene 85.7 70 - 130 0.23 ND 0.272 0.03 1.00 n-Propyl Benzene 85.0 70 - 130 0.23 ND 0.272 0.03 1.00 Pentachloroethane 87.9 70 - 130 0.24 ND 0.272 0.03 1.00 p-Isopropyltoluene 84.8 70 - 130 0.23 ND 0.272 0.03 1.00 sec-Butyl Benzene 86.9 70 - 130 0.24 ND 0.272 0.03 1.00 Styrene 87.2 70 - 130 0.24 ND 0.272 0.03 1.00 tert-Butylbenzene 88.1 70 - 130 0.24 ND 0.272 0.03 1.00 Tetrachloroethene 90.6 70 - 130 0.25 ND 0.272 0.03 1.00 Toluene 78.0 70 - 130 0.23 0.02 0.272 0.03 1.00 trans-1,2-Dichloroethene 66.3 70 - 130 0.18 ND 0.272 0.03 1.00 QM-RPD - The recovery was outside acceptance limits for the MS and/or MSD. The RPD between the MS and MSD was acceptable and indicates the recovery is due to matrix interference. The batch was accepted based on the acceptable recovery of the LCS and the RPD. trans-1,3-Dichloropropene 84.8 70 - 130 0.23 ND 0.272 0.03 1.00 Trichloroethene 81.6 70 - 130 0.22 ND 0.272 0.03 1.00 Trichlorofluoromethane 68.9 70 - 130 0.19 ND 0.272 0.03 1.00 QM-RPD - The recovery was outside acceptance limits for the MS and/or MSD. The RPD between the MS and MSD was acceptable and indicates the recovery is due to matrix interference. The batch was accepted based on the acceptable recovery of the LCS and the RPD. Vinyl Chloride 62.9 70 - 130 0.17 ND 0.272 0.02 1.00 QM-RPD - The recovery was outside acceptance limits for the MS and/or MSD. The RPD between the MS and MSD was acceptable and indicates the recovery is due to matrix interference. The batch was accepted based on the acceptable recovery of the LCS and the RPD. Xylenes, total 89.8 70 - 130 0.73 ND 0.816 0.08 1.00 Matrix Spike Dup - EPA 8260D QC Sample ID: BYL0870-MSD1 QC Source Sample: XXXXXXX-XXBatch: BYL0870 Date Prepared: 12/18/2024 Date Analyzed: 12/18/2024 1,1,1,2-Tetrachloroethane 110 0.364 70 - 130 20 3.33 ND 3.03 0.30 1.00 1,1,1-Trichloroethane 88.8 0.673 70 - 130 20 2.69 ND 3.03 0.30 1.00 1,1,2,2-Tetrachloroethane 96.9 1.84 70 - 130 20 2.93 ND 3.03 0.30 1.00 1,1,2-Trichloroethane 92.7 4.02 70 - 130 20 2.81 ND 3.03 0.30 1.00 1,1,2-Trichlorotrifluoroethane 142 0.841 70 - 130 20 4.30 ND 3.03 0.30 1.00 HB - Recovery for this parameter exceeded the upper acceptance limit. Associated sample(s) were all non-detect and therefore accepted and reported for this parameter. 1,1-Dichloroethane 82.4 2.21 70 - 130 20 2.49 ND 3.03 0.30 1.00 1,1-Dichloroethene 93.5 1.40 70 - 130 20 2.83 ND 3.03 0.30 1.00 1,1-Dichloropropene 93.2 2.54 70 - 130 20 2.82 ND 3.03 0.30 1.00 1,2,3-Trichlorobenzene 111 8.37 70 - 130 20 3.35 ND 3.03 0.30 1.00 1,2,3-Trichloropropane 103 0.292 70 - 130 20 3.11 ND 3.03 0.30 1.00 1,2,4-Trichlorobenzene 116 7.76 70 - 130 20 3.53 ND 3.03 0.30 1.00 1,2,4-Trimethylbenzene 105 2.02 70 - 130 20 3.18 ND 3.03 0.30 1.00 1,2-Dibromo-3-chloropropane 93.0 1.28 70 - 130 20 2.82 ND 3.03 0.30 1.00 CtF WO#: 24L1006 www.ChemtechFord.com Page 51 of 55 QC Report for Work Order (WO) - 24L1006 % Rec RPD RPD Max MRL DFResultSpk ValueLimitsSource ConcAnalyte Matrix Spike Dup - EPA 8260D (cont.) QC Sample ID: BYL0870-MSD1 QC Source Sample: XXXXXXX-XXBatch: BYL0870 Date Prepared: 12/18/2024 Date Analyzed: 12/18/2024 1,2-Dibromoethane (EDB)109 1.28 70 - 130 20 3.30 ND 3.03 0.30 1.00 1,2-Dichlorobenzene 113 3.71 70 - 130 20 3.41 ND 3.03 0.30 1.00 1,2-Dichloroethane 86.1 1.50 70 - 130 20 2.61 ND 3.03 0.30 1.00 1,2-Dichloropropane 89.0 1.12 70 - 130 20 2.69 ND 3.03 0.30 1.00 1,3,5-Trimethylbenzene 104 1.26 70 - 130 20 3.14 ND 3.03 0.30 1.00 1,3-Dichlorobenzene 112 3.82 70 - 130 20 3.39 ND 3.03 0.30 1.00 1,3-Dichloropropane 94.5 2.30 70 - 130 20 2.86 ND 3.03 0.30 1.00 1,4-Dichlorobenzene 113 1.60 70 - 130 20 3.43 ND 3.03 0.30 1.00 2,2-Dichloropropane 80.5 12.7 70 - 130 20 2.44 ND 3.03 0.30 1.00 2-Chlorotoluene 110 2.40 70 - 130 20 3.32 ND 3.03 0.30 1.00 2-Nitropropane 70.6 0.639 70 - 130 20 4.28 ND 6.06 0.61 1.00 4-Chlorotoluene 110 2.21 70 - 130 20 3.33 ND 3.03 0.30 1.00 Acetone 79.7 3.38 70 - 130 20 24.1 ND 30.3 6.06 1.00 Benzene 93.2 1.07 70 - 130 20 2.82 ND 3.03 0.12 1.00 Bromobenzene 114 1.77 70 - 130 20 3.45 ND 3.03 0.30 1.00 Bromochloromethane 93.8 4.69 70 - 130 20 2.84 ND 3.03 0.30 1.00 Bromodichloromethane 95.5 1.66 70 - 130 20 2.89 ND 3.03 0.30 1.00 Bromoform 107 2.39 70 - 130 20 3.25 ND 3.03 0.30 1.00 Bromomethane 98.1 9.39 70 - 130 20 2.97 ND 3.03 0.61 1.00 Carbon Disulfide 145 2.80 70 - 130 20 4.38 ND 3.03 0.61 1.00 HB - Recovery for this parameter exceeded the upper acceptance limit. Associated sample(s) were all non-detect and therefore accepted and reported for this parameter. Carbon Tetrachloride 112 1.51 70 - 130 20 3.39 ND 3.03 0.30 1.00 Chlorobenzene 105 0.380 70 - 130 20 3.19 ND 3.03 0.30 1.00 Chloroethane 91.5 1.76 70 - 130 20 2.77 ND 3.03 0.30 1.00 Chloroform 82.4 0.966 70 - 130 20 2.49 ND 3.03 0.30 1.00 Chloromethane 86.4 8.57 70 - 130 20 2.62 ND 3.03 0.30 1.00 cis-1,2-Dichloroethene 84.3 1.41 70 - 130 20 2.55 ND 3.03 0.30 1.00 cis-1,3-Dichloropropene 90.4 1.65 70 - 130 20 2.74 ND 3.03 0.30 1.00 Cyclohexanone 86.7 3.43 70 - 130 20 26.3 ND 30.3 3.03 1.00 Dibromochloromethane 108 2.48 70 - 130 20 3.26 ND 3.03 0.30 1.00 Dibromomethane 112 1.77 70 - 130 20 3.40 ND 3.03 0.30 1.00 Dichlorodifluoromethane 107 1.98 70 - 130 20 3.24 ND 3.03 0.30 1.00 Ethyl Acetate 82.6 1.59 70 - 130 20 5.00 ND 6.06 0.61 1.00 Ethyl Ether 89.3 0.335 70 - 130 20 2.70 ND 3.03 0.30 1.00 Ethylbenzene 109 0.832 70 - 130 20 3.29 ND 3.03 0.30 1.00 Hexachlorobutadiene 88.7 1.36 70 - 130 20 2.69 ND 3.03 0.30 1.00 Isobutanol 70.7 1.10 70 - 130 20 42.8 ND 60.6 6.06 1.00 Isopropylbenzene 105 1.73 70 - 130 20 3.18 ND 3.03 0.30 1.00 Methyl Ethyl Ketone 97.2 5.11 70 - 130 20 2.94 ND 3.03 0.61 1.00 Methyl Isobutyl Ketone 86.4 8.74 70 - 130 20 2.62 ND 3.03 1.51 1.00 Methylene Chloride 86.9 1.27 70 - 130 20 2.63 ND 3.03 0.30 1.00 Methyl-tert-butyl ether (MTBE)70 - 130 20 ND ND 3.03 0.18 1.00 MS-Low - Estimated low due to Matrix Spike recovery. RPD-MSOut - The RPD between MS and MSD is outside established control limits. Naphthalene 108 8.08 70 - 130 20 3.27 ND 3.03 0.30 1.00 n-Butyl Alcohol 56.8 2.07 70 - 130 20 17.2 ND 30.3 15.1 1.00 MS-Low - Estimated low due to Matrix Spike recovery. n-Butylbenzene 101 2.30 70 - 130 20 3.06 ND 3.03 0.30 1.00 n-Propyl Benzene 106 2.87 70 - 130 20 3.22 ND 3.03 0.30 1.00 Pentachloroethane 94.3 1.05 70 - 130 20 2.86 ND 3.03 0.30 1.00 CtF WO#: 24L1006 www.ChemtechFord.com Page 52 of 55 QC Report for Work Order (WO) - 24L1006 % Rec RPD RPD Max MRL DFResultSpk ValueLimitsSource ConcAnalyte Matrix Spike Dup - EPA 8260D (cont.) QC Sample ID: BYL0870-MSD1 QC Source Sample: XXXXXXX-XXBatch: BYL0870 Date Prepared: 12/18/2024 Date Analyzed: 12/18/2024 p-Isopropyltoluene 103 1.87 70 - 130 20 3.11 ND 3.03 0.30 1.00 sec-Butyl Benzene 104 1.56 70 - 130 20 3.14 ND 3.03 0.30 1.00 Styrene 104 0.484 70 - 130 20 3.14 ND 3.03 0.30 1.00 tert-Butylbenzene 107 1.69 70 - 130 20 3.24 ND 3.03 0.30 1.00 Tetrachloroethene 114 0.263 70 - 130 20 3.45 ND 3.03 0.30 1.00 Toluene 93.6 0.639 70 - 130 20 2.83 ND 3.03 0.30 1.00 trans-1,2-Dichloroethene 86.8 1.49 70 - 130 20 2.63 ND 3.03 0.30 1.00 trans-1,3-Dichloropropene 93.3 1.07 70 - 130 20 2.82 ND 3.03 0.30 1.00 Trichloroethene 114 0.702 70 - 130 20 3.44 ND 3.03 0.30 1.00 Trichlorofluoromethane 96.6 3.05 70 - 130 20 2.92 ND 3.03 0.30 1.00 Vinyl Chloride 84.4 2.28 70 - 130 20 2.56 ND 3.03 0.24 1.00 Xylenes, total 115 1.78 70 - 130 20 10.5 ND 9.08 0.91 1.00 QC Sample ID: BYL0913-MSD1 QC Source Sample: 24L1006-03Batch: BYL0913 Date Prepared: 12/19/2024 Date Analyzed: 12/19/2024 1,1,1,2-Tetrachloroethane 89.8 0.104 70 - 130 20 0.26 ND 0.285 0.03 1.00 1,1,1-Trichloroethane 61.7 4.35 70 - 130 20 0.18 ND 0.285 0.03 1.00 QM-RPD - The recovery was outside acceptance limits for the MS and/or MSD. The RPD between the MS and MSD was acceptable and indicates the recovery is due to matrix interference. The batch was accepted based on the acceptable recovery of the LCS and the RPD. 1,1,2,2-Tetrachloroethane 92.8 1.29 70 - 130 20 0.26 ND 0.285 0.03 1.00 1,1,2-Trichloroethane 90.6 4.90 70 - 130 20 0.26 ND 0.285 0.03 1.00 1,1,2-Trichlorotrifluoroethane 95.5 6.86 70 - 130 20 0.27 ND 0.285 0.03 1.00 1,1-Dichloroethane 54.4 0.408 70 - 130 20 0.16 ND 0.285 0.03 1.00 QM-RPD - The recovery was outside acceptance limits for the MS and/or MSD. The RPD between the MS and MSD was acceptable and indicates the recovery is due to matrix interference. The batch was accepted based on the acceptable recovery of the LCS and the RPD. 1,1-Dichloroethene 59.1 12.4 70 - 130 20 0.17 ND 0.285 0.03 1.00 QM-RPD - The recovery was outside acceptance limits for the MS and/or MSD. The RPD between the MS and MSD was acceptable and indicates the recovery is due to matrix interference. The batch was accepted based on the acceptable recovery of the LCS and the RPD. 1,1-Dichloropropene 62.3 6.15 70 - 130 20 0.18 ND 0.285 0.03 1.00 QM-RPD - The recovery was outside acceptance limits for the MS and/or MSD. The RPD between the MS and MSD was acceptable and indicates the recovery is due to matrix interference. The batch was accepted based on the acceptable recovery of the LCS and the RPD. 1,2,3-Trichlorobenzene 96.4 1.42 70 - 130 20 0.28 ND 0.285 0.03 1.00 1,2,3-Trichloropropane 100 5.18 70 - 130 20 0.29 ND 0.285 0.03 1.00 1,2,4-Trichlorobenzene 99.2 0.446 70 - 130 20 0.28 ND 0.285 0.03 1.00 1,2,4-Trimethylbenzene 82.7 4.01 70 - 130 20 0.24 ND 0.285 0.03 1.00 1,2-Dibromo-3-chloropropane 92.7 3.07 70 - 130 20 0.26 ND 0.285 0.03 1.00 1,2-Dibromoethane (EDB)102 3.03 70 - 130 20 0.29 ND 0.285 0.03 1.00 1,2-Dichlorobenzene 93.6 0.114 70 - 130 20 0.27 ND 0.285 0.03 1.00 1,2-Dichloroethane 76.0 2.57 70 - 130 20 0.22 ND 0.285 0.03 1.00 1,2-Dichloropropane 70.6 1.13 70 - 130 20 0.20 ND 0.285 0.03 1.00 1,3,5-Trimethylbenzene 79.7 4.66 70 - 130 20 0.23 ND 0.285 0.03 1.00 1,3-Dichlorobenzene 89.3 1.72 70 - 130 20 0.25 ND 0.285 0.03 1.00 1,3-Dichloropropane 85.9 1.69 70 - 130 20 0.25 ND 0.285 0.03 1.00 1,4-Dichlorobenzene 91.8 0.724 70 - 130 20 0.26 ND 0.285 0.03 1.00 2,2-Dichloropropane 65.9 4.94 70 - 130 20 0.19 ND 0.285 0.03 1.00 QM-RPD - The recovery was outside acceptance limits for the MS and/or MSD. The RPD between the MS and MSD was acceptable and indicates the recovery is due to matrix interference. The batch was accepted based on the acceptable recovery of the LCS and the RPD. 2-Chlorotoluene 82.4 4.04 70 - 130 20 0.24 ND 0.285 0.03 1.00 CtF WO#: 24L1006 www.ChemtechFord.com Page 53 of 55 QC Report for Work Order (WO) - 24L1006 % Rec RPD RPD Max MRL DFResultSpk ValueLimitsSource ConcAnalyte Matrix Spike Dup - EPA 8260D (cont.) QC Sample ID: BYL0913-MSD1 QC Source Sample: 24L1006-03Batch: BYL0913 Date Prepared: 12/19/2024 Date Analyzed: 12/19/2024 2-Nitropropane 65.7 4.10 70 - 130 20 0.37 ND 0.571 0.06 1.00 QM-RPD - The recovery was outside acceptance limits for the MS and/or MSD. The RPD between the MS and MSD was acceptable and indicates the recovery is due to matrix interference. The batch was accepted based on the acceptable recovery of the LCS and the RPD. 4-Chlorotoluene 84.4 2.85 70 - 130 20 0.24 ND 0.285 0.03 1.00 Acetone 88.3 3.75 70 - 130 20 2.52 ND 2.85 0.57 1.00 Benzene 70.8 0.344 70 - 130 20 0.22 0.01 0.285 0.01 1.00 Bromobenzene 92.2 1.37 70 - 130 20 0.26 ND 0.285 0.03 1.00 Bromochloromethane 76.2 1.20 70 - 130 20 0.22 ND 0.285 0.03 1.00 Bromodichloromethane 82.2 0.967 70 - 130 20 0.23 ND 0.285 0.03 1.00 Bromoform 101 2.72 70 - 130 20 0.29 ND 0.285 0.03 1.00 Bromomethane 69.8 1.46 70 - 130 20 0.20 ND 0.285 0.06 1.00 QM-RPD - The recovery was outside acceptance limits for the MS and/or MSD. The RPD between the MS and MSD was acceptable and indicates the recovery is due to matrix interference. The batch was accepted based on the acceptable recovery of the LCS and the RPD. Carbon Disulfide 95.8 7.75 70 - 130 20 0.27 ND 0.285 0.06 1.00 Carbon Tetrachloride 76.3 4.47 70 - 130 20 0.22 ND 0.285 0.03 1.00 Chlorobenzene 82.4 1.79 70 - 130 20 0.24 ND 0.285 0.03 1.00 Chloroethane 58.9 7.50 70 - 130 20 0.17 ND 0.285 0.03 1.00 QM-RPD - The recovery was outside acceptance limits for the MS and/or MSD. The RPD between the MS and MSD was acceptable and indicates the recovery is due to matrix interference. The batch was accepted based on the acceptable recovery of the LCS and the RPD. Chloroform 63.3 3.11 70 - 130 20 0.18 ND 0.285 0.03 1.00 QM-RPD - The recovery was outside acceptance limits for the MS and/or MSD. The RPD between the MS and MSD was acceptable and indicates the recovery is due to matrix interference. The batch was accepted based on the acceptable recovery of the LCS and the RPD. Chloromethane 53.7 9.10 70 - 130 20 0.15 ND 0.285 0.03 1.00 QM-RPD - The recovery was outside acceptance limits for the MS and/or MSD. The RPD between the MS and MSD was acceptable and indicates the recovery is due to matrix interference. The batch was accepted based on the acceptable recovery of the LCS and the RPD. cis-1,2-Dichloroethene 64.6 2.96 70 - 130 20 0.18 ND 0.285 0.03 1.00 QM-RPD - The recovery was outside acceptance limits for the MS and/or MSD. The RPD between the MS and MSD was acceptable and indicates the recovery is due to matrix interference. The batch was accepted based on the acceptable recovery of the LCS and the RPD. cis-1,3-Dichloropropene 78.1 0.647 70 - 130 20 0.22 ND 0.285 0.03 1.00 Cyclohexanone 121 12.5 70 - 130 20 3.47 ND 2.85 0.29 1.00 Dibromochloromethane 99.6 4.48 70 - 130 20 0.28 ND 0.285 0.03 1.00 Dibromomethane 100 0.388 70 - 130 20 0.29 ND 0.285 0.03 1.00 Dichlorodifluoromethane 64.2 9.28 70 - 130 20 0.18 ND 0.285 0.03 1.00 QM-RPD - The recovery was outside acceptance limits for the MS and/or MSD. The RPD between the MS and MSD was acceptable and indicates the recovery is due to matrix interference. The batch was accepted based on the acceptable recovery of the LCS and the RPD. Ethyl Acetate 85.5 4.78 70 - 130 20 0.49 ND 0.571 0.06 1.00 Ethyl Ether 81.8 4.05 70 - 130 20 0.23 ND 0.285 0.03 1.00 Ethylbenzene 78.2 3.90 70 - 130 20 0.22 ND 0.285 0.03 1.00 Hexachlorobutadiene 74.7 3.19 70 - 130 20 0.21 ND 0.285 0.03 1.00 Isobutanol 93.4 9.38 70 - 130 20 5.33 ND 5.71 0.57 1.00 Isopropylbenzene 75.0 5.11 70 - 130 20 0.21 ND 0.285 0.03 1.00 Methyl Ethyl Ketone 109 1.36 70 - 130 20 0.31 ND 0.285 0.06 1.00 Methyl Isobutyl Ketone 98.4 9.89 70 - 130 20 0.28 ND 0.285 0.14 1.00 Methylene Chloride 66.9 2.98 70 - 130 20 0.19 ND 0.285 0.03 1.00 CtF WO#: 24L1006 www.ChemtechFord.com Page 54 of 55 QC Report for Work Order (WO) - 24L1006 % Rec RPD RPD Max MRL DFResultSpk ValueLimitsSource ConcAnalyte Matrix Spike Dup - EPA 8260D (cont.) QC Sample ID: BYL0913-MSD1 QC Source Sample: 24L1006-03Batch: BYL0913 Date Prepared: 12/19/2024 Date Analyzed: 12/19/2024 QM-RPD - The recovery was outside acceptance limits for the MS and/or MSD. The RPD between the MS and MSD was acceptable and indicates the recovery is due to matrix interference. The batch was accepted based on the acceptable recovery of the LCS and the RPD. Methyl-tert-butyl ether (MTBE)70 - 130 20 ND ND 0.285 0.02 1.00 QM-RPD - The recovery was outside acceptance limits for the MS and/or MSD. The RPD between the MS and MSD was acceptable and indicates the recovery is due to matrix interference. The batch was accepted based on the acceptable recovery of the LCS and the RPD. Naphthalene 97.9 2.66 70 - 130 20 0.28 ND 0.285 0.03 1.00 n-Butyl Alcohol 77.7 12.7 70 - 130 20 2.22 ND 2.85 1.43 1.00 n-Butylbenzene 76.8 6.18 70 - 130 20 0.22 ND 0.285 0.03 1.00 n-Propyl Benzene 76.6 5.62 70 - 130 20 0.22 ND 0.285 0.03 1.00 Pentachloroethane 72.8 14.0 70 - 130 20 0.21 ND 0.285 0.03 1.00 p-Isopropyltoluene 77.7 3.96 70 - 130 20 0.22 ND 0.285 0.03 1.00 sec-Butyl Benzene 76.6 7.83 70 - 130 20 0.22 ND 0.285 0.03 1.00 Styrene 81.7 1.73 70 - 130 20 0.23 ND 0.285 0.03 1.00 tert-Butylbenzene 78.5 6.75 70 - 130 20 0.22 ND 0.285 0.03 1.00 Tetrachloroethene 94.5 8.99 70 - 130 20 0.27 ND 0.285 0.03 1.00 Toluene 74.3 0.0114 70 - 130 20 0.23 0.02 0.285 0.03 1.00 trans-1,2-Dichloroethene 60.7 4.04 70 - 130 20 0.17 ND 0.285 0.03 1.00 QM-RPD - The recovery was outside acceptance limits for the MS and/or MSD. The RPD between the MS and MSD was acceptable and indicates the recovery is due to matrix interference. The batch was accepted based on the acceptable recovery of the LCS and the RPD. trans-1,3-Dichloropropene 82.9 2.52 70 - 130 20 0.24 ND 0.285 0.03 1.00 Trichloroethene 76.0 2.32 70 - 130 20 0.22 ND 0.285 0.03 1.00 Trichlorofluoromethane 59.7 9.54 70 - 130 20 0.17 ND 0.285 0.03 1.00 QM-RPD - The recovery was outside acceptance limits for the MS and/or MSD. The RPD between the MS and MSD was acceptable and indicates the recovery is due to matrix interference. The batch was accepted based on the acceptable recovery of the LCS and the RPD. Vinyl Chloride 53.9 10.6 70 - 130 20 0.15 ND 0.285 0.02 1.00 QM-RPD - The recovery was outside acceptance limits for the MS and/or MSD. The RPD between the MS and MSD was acceptable and indicates the recovery is due to matrix interference. The batch was accepted based on the acceptable recovery of the LCS and the RPD. Xylenes, total 83.1 2.89 70 - 130 20 0.71 ND 0.856 0.09 1.00 CtF WO#: 24L1006 www.ChemtechFord.com Page 55 of 55 The analyses presented on this report were performed in accordance with the National Environmental Laboratory Accreditation Program (NELAP) unless noted in the comments, flags, or case narrative. If the report is to be used for regulatory compliance, it should be presented in its entirety, and not be altered. Client Service Contact: 801.262.7299 CMT Technical Services, Inc. Attn: Michael Sauerwein 2800 South Redwood Road West Valley City, UT 84119-2375 Work Order: 24L1007 Project: 23501- Maverik (Chevron), 1350 E 700 S, Clearfield - Limited Phase II ESA 12/26/2024 Approved By: Andrew Royer, Project Manager 9632 South 500 West Sandy, Utah 84070 Serving the Intermountain West since 1953 801.262.7299 Main 866.792.0093 Fax www.ChemtechFord.com Page 1 of 67 xx Chemtech-Ford Laboratories Serving the Intermountain West Since 1953 Certificate of Analysis 9632 South 500 West Sandy, UT 84070 O:(801) 262-7299 F: (866) 792-0093 www.ChemtechFord.com CMT Technical Services, Inc. Michael Sauerwein 2800 South Redwood Road West Valley City, UT 84119-2375 PO#: Receipt: Date Reported: Project Name: 12/11/24 17:10 @ 4.9 °C 12/26/2024 23501- Maverik (Chevron), 1350 E 700 S, Clearfield - Limited Phase II ESA Sample ID: B-1-W Lab ID: 24L1007-01Matrix: Water Flag(s)Units Analysis Date/Time Date Sampled: 12/10/24 10:15 Preparation Date/Time Sampled By: Michael Sauerwein Minimum Reporting Limit MethodResult Inorganic mg/L 12/16/2412/16/245EPA 1664B17Oil & Grease (HEM) mg/L 12/17/2412/16/245EPA 1664B9TRPH (SGT-HEM) Metals mg/L 12/13/2412/12/240.0500 EPA 6010D/3010ANDArsenic, Total mg/L 12/13/2412/12/240.005 EPA 6010D/3010A1.53Barium, Total mg/L 12/13/2412/12/240.005 EPA 6010D/3010ANDCadmium, Total mg/L 12/13/2412/12/240.0050 EPA 6010D/3010A0.135Chromium, Total mg/L 12/13/2412/12/240.0200 EPA 6010D/3010A0.0512Lead, Total mg/L 12/13/2412/12/240.0002 EPA 7470ANDMercury, Total mg/L 12/13/2412/12/240.0300 EPA 6010D/3010ANDSelenium, Total mg/L 12/13/2412/12/240.005 EPA 6010D/3010ANDSilver, Total Diesel Range mg/L 12/18/2412/16/241.0 EPA 8015 CNDDiesel Range Organics Volatile Organic Compounds ug/L 12/19/2412/19/241.0 EPA 8260D/5030BND1,1,1,2-Tetrachloroethane ug/L 12/19/2412/19/241.0 EPA 8260D/5030BND1,1,1-Trichloroethane ug/L 12/19/2412/19/241.0 EPA 8260D/5030BND1,1,2,2-Tetrachloroethane ug/L 12/19/2412/19/241.0 EPA 8260D/5030BND1,1,2-Trichloroethane ug/L J-LOW-L12/19/2412/19/241.0 EPA 8260D/5030BND1,1,2-Trichlorotrifluoroethane ug/L 12/19/2412/19/241.0 EPA 8260D/5030BND1,1-Dichloroethane ug/L 12/19/2412/19/241.0 EPA 8260D/5030BND1,1-Dichloroethene ug/L 12/19/2412/19/241.0 EPA 8260D/5030BND1,1-Dichloropropene ug/L J-LOW-C12/19/2412/19/2410.0 EPA 8260D/5030BND2-Hexanone ug/L 12/19/2412/19/241.0 EPA 8260D/5030BND1,2,3-Trichlorobenzene ug/L 12/19/2412/19/241.0 EPA 8260D/5030BND1,2,3-Trichloropropane ug/L 12/19/2412/19/241.0 EPA 8260D/5030BND1,2,4-Trichlorobenzene ug/L 12/19/2412/19/241.0 EPA 8260D/5030BND1,2,4-Trimethylbenzene ug/L 12/19/2412/19/241.0 EPA 8260D/5030BND1,2-Dibromo-3-chloropropane ug/L 12/19/2412/19/241.0 EPA 8260D/5030BND1,2-Dibromoethane (EDB) ug/L 12/19/2412/19/241.0 EPA 8260D/5030BND1,2-Dichlorobenzene ug/L 12/19/2412/19/241.0 EPA 8260D/5030BND1,2-Dichloroethane ug/L 12/19/2412/19/241.0 EPA 8260D/5030BND1,2-Dichloropropane ug/L 12/19/2412/19/241.0 EPA 8260D/5030BND1,3,5-Trimethylbenzene ug/L 12/19/2412/19/241.0 EPA 8260D/5030BND1,3-Dichlorobenzene ug/L 12/19/2412/19/241.0 EPA 8260D/5030BND1,3-Dichloropropane ug/L 12/19/2412/19/241.0 EPA 8260D/5030BND1,4-Dichlorobenzene Project Name: 23501- Maverik (Chevron), 1350 E 700 S, Clearfield CtF WO#: 24L1007 www.ChemtechFord.com Page 2 of 66Page 2 of 67 xx Chemtech-Ford Laboratories Serving the Intermountain West Since 1953 Certificate of Analysis 9632 South 500 West Sandy, UT 84070 O:(801) 262-7299 F: (866) 792-0093 www.ChemtechFord.com CMT Technical Services, Inc. Michael Sauerwein 2800 South Redwood Road West Valley City, UT 84119-2375 PO#: Receipt: Date Reported: Project Name: 12/11/24 17:10 @ 4.9 °C 12/26/2024 23501- Maverik (Chevron), 1350 E 700 S, Clearfield - Limited Phase II ESA Sample ID: B-1-W (cont.) Lab ID: 24L1007-01Matrix: Water Flag(s)Units Analysis Date/Time Date Sampled: 12/10/24 10:15 Preparation Date/Time Sampled By: Michael Sauerwein Minimum Reporting Limit MethodResult Volatile Organic Compounds (cont.) ug/L 12/19/2412/19/241.0 EPA 8260D/5030BND2,2-Dichloropropane ug/L 12/19/2412/19/241.0 EPA 8260D/5030BND2-Chlorotoluene ug/L 12/19/2412/19/242.0 EPA 8260D/5030BND2-Nitropropane ug/L 12/19/2412/19/241.0 EPA 8260D/5030BND4-Chlorotoluene ug/L 12/19/2412/19/2420.0 EPA 8260D/5030BNDAcetone ug/L 12/19/2412/19/245.0 EPA 8260D/5030BNDAcrylonitrile ug/L 12/19/2412/19/240.4 EPA 8260D/5030BNDBenzene ug/L 12/19/2412/19/241.0 EPA 8260D/5030BNDBromobenzene ug/L 12/19/2412/19/241.0 EPA 8260D/5030BNDBromochloromethane ug/L 12/19/2412/19/241.0 EPA 8260D/5030BNDBromodichloromethane ug/L 12/19/2412/19/241.0 EPA 8260D/5030BNDBromoform ug/L J-LOW-C12/19/2412/19/242.0 EPA 8260D/5030BNDBromomethane ug/L 12/19/2412/19/242.0 EPA 8260D/5030BNDCarbon Disulfide ug/L 12/19/2412/19/241.0 EPA 8260D/5030BNDCarbon Tetrachloride ug/L 12/19/2412/19/241.0 EPA 8260D/5030BNDChlorobenzene ug/L 12/19/2412/19/241.0 EPA 8260D/5030BNDChloroethane ug/L 12/19/2412/19/241.0 EPA 8260D/5030BNDChloroform ug/L J-LOW-L12/19/2412/19/241.0 EPA 8260D/5030BNDChloromethane ug/L 12/19/2412/19/241.0 EPA 8260D/5030BNDcis-1,2-Dichloroethene ug/L 12/19/2412/19/241.0 EPA 8260D/5030BNDcis-1,3-Dichloropropene ug/L J-LOW-C12/19/2412/19/2410.0 EPA 8260D/5030BNDCyclohexanone ug/L 12/19/2412/19/241.0 EPA 8260D/5030BNDDibromochloromethane ug/L 12/19/2412/19/241.0 EPA 8260D/5030BNDDibromomethane ug/L J-LOW-L12/19/2412/19/241.0 EPA 8260D/5030BNDDichlorodifluoromethane ug/L 12/19/2412/19/242.0 EPA 8260D/5030BNDEthyl Acetate ug/L 12/19/2412/19/241.0 EPA 8260D/5030BNDEthylbenzene ug/L 12/19/2412/19/241.0 EPA 8260D/5030BNDEthyl Ether ug/L 12/19/2412/19/241.0 EPA 8260D/5030BNDHexachlorobutadiene ug/L J-LOW-L12/19/2412/19/2420.0 EPA 8260D/5030BNDIsobutanol ug/L 12/19/2412/19/241.0 EPA 8260D/5030BNDIsopropylbenzene ug/L 12/19/2412/19/242.0 EPA 8260D/5030BNDMethyl Ethyl Ketone ug/L J-LOW-C12/19/2412/19/245.0 EPA 8260D/5030BNDMethyl Isobutyl Ketone ug/L 12/19/2412/19/241.0 EPA 8260D/5030BNDMethylene Chloride ug/L 12/19/2412/19/240.6 EPA 8260D/5030BNDMethyl-tert-butyl ether (MTBE) ug/L 12/19/2412/19/241.0 EPA 8260D/5030BNDNaphthalene ug/L J-LOW-C12/19/2412/19/2450.0 EPA 8260D/5030BNDn-Butyl Alcohol Project Name: 23501- Maverik (Chevron), 1350 E 700 S, Clearfield CtF WO#: 24L1007 www.ChemtechFord.com Page 3 of 66Page 3 of 67 xx Chemtech-Ford Laboratories Serving the Intermountain West Since 1953 Certificate of Analysis 9632 South 500 West Sandy, UT 84070 O:(801) 262-7299 F: (866) 792-0093 www.ChemtechFord.com CMT Technical Services, Inc. Michael Sauerwein 2800 South Redwood Road West Valley City, UT 84119-2375 PO#: Receipt: Date Reported: Project Name: 12/11/24 17:10 @ 4.9 °C 12/26/2024 23501- Maverik (Chevron), 1350 E 700 S, Clearfield - Limited Phase II ESA Sample ID: B-1-W (cont.) Lab ID: 24L1007-01Matrix: Water Flag(s)Units Analysis Date/Time Date Sampled: 12/10/24 10:15 Preparation Date/Time Sampled By: Michael Sauerwein Minimum Reporting Limit MethodResult Volatile Organic Compounds (cont.) ug/L 12/19/2412/19/241.0 EPA 8260D/5030BNDn-Butylbenzene ug/L 12/19/2412/19/241.0 EPA 8260D/5030BNDn-Propyl Benzene ug/L J-LOW-L12/19/2412/19/241.0 EPA 8260D/5030BNDPentachloroethane ug/L 12/19/2412/19/241.0 EPA 8260D/5030BNDp-Isopropyltoluene ug/L 12/19/2412/19/241.0 EPA 8260D/5030BNDsec-Butyl Benzene ug/L 12/19/2412/19/241.0 EPA 8260D/5030BNDStyrene ug/L 12/19/2412/19/241.0 EPA 8260D/5030BNDtert-Butylbenzene ug/L 12/19/2412/19/241.0 EPA 8260D/5030BNDTetrachloroethene ug/L 12/19/2412/19/241.0 EPA 8260D/5030BNDToluene ug/L 12/19/2412/19/241.0 EPA 8260D/5030BNDtrans-1,2-Dichloroethene ug/L 12/19/2412/19/241.0 EPA 8260D/5030BNDtrans-1,3-Dichloropropene ug/L 12/19/2412/19/241.0 EPA 8260D/5030BNDTrichloroethene ug/L 12/19/2412/19/241.0 EPA 8260D/5030BNDTrichlorofluoromethane ug/L J-LOW-L12/19/2412/19/240.8 EPA 8260D/5030BNDVinyl Chloride ug/L 12/19/2412/19/243.0 EPA 8260D/5030BNDXylenes, total ug/L 12/19/2412/19/2410.0 EPA 8260D/5030BNDGasoline Range Organics Project Name: 23501- Maverik (Chevron), 1350 E 700 S, Clearfield CtF WO#: 24L1007 www.ChemtechFord.com Page 4 of 66Page 4 of 67 xx Chemtech-Ford Laboratories Serving the Intermountain West Since 1953 Certificate of Analysis 9632 South 500 West Sandy, UT 84070 O:(801) 262-7299 F: (866) 792-0093 www.ChemtechFord.com CMT Technical Services, Inc. Michael Sauerwein 2800 South Redwood Road West Valley City, UT 84119-2375 PO#: Receipt: Date Reported: Project Name: 12/11/24 17:10 @ 4.9 °C 12/26/2024 23501- Maverik (Chevron), 1350 E 700 S, Clearfield - Limited Phase II ESA Sample ID: B-2-W Lab ID: 24L1007-02Matrix: Water Flag(s)Units Analysis Date/Time Date Sampled: 12/10/24 11:25 Preparation Date/Time Sampled By: Michael Sauerwein Minimum Reporting Limit MethodResult Inorganic mg/L 12/16/2412/16/245EPA 1664BNDOil & Grease (HEM) mg/L 12/16/2412/16/245EPA 1664BNDTRPH (SGT-HEM) Metals mg/L 12/13/2412/12/240.0500 EPA 6010D/3010ANDArsenic, Total mg/L 12/13/2412/12/240.005 EPA 6010D/3010A1.12Barium, Total mg/L 12/13/2412/12/240.005 EPA 6010D/3010ANDCadmium, Total mg/L 12/13/2412/12/240.0050 EPA 6010D/3010A0.0899Chromium, Total mg/L 12/13/2412/12/240.0200 EPA 6010D/3010A0.0388Lead, Total mg/L 12/13/2412/12/240.0002 EPA 7470ANDMercury, Total mg/L 12/13/2412/12/240.0300 EPA 6010D/3010ANDSelenium, Total mg/L 12/13/2412/12/240.005 EPA 6010D/3010ANDSilver, Total Diesel Range mg/L 12/18/2412/16/241.0 EPA 8015 CNDDiesel Range Organics Volatile Organic Compounds ug/L 12/19/2412/19/241.0 EPA 8260D/5030BND1,1,1,2-Tetrachloroethane ug/L 12/19/2412/19/241.0 EPA 8260D/5030BND1,1,1-Trichloroethane ug/L 12/19/2412/19/241.0 EPA 8260D/5030BND1,1,2,2-Tetrachloroethane ug/L 12/19/2412/19/241.0 EPA 8260D/5030BND1,1,2-Trichloroethane ug/L J-LOW-L12/19/2412/19/241.0 EPA 8260D/5030BND1,1,2-Trichlorotrifluoroethane ug/L 12/19/2412/19/241.0 EPA 8260D/5030BND1,1-Dichloroethane ug/L 12/19/2412/19/241.0 EPA 8260D/5030BND1,1-Dichloroethene ug/L 12/19/2412/19/241.0 EPA 8260D/5030BND1,1-Dichloropropene ug/L J-LOW-C12/19/2412/19/2410.0 EPA 8260D/5030BND2-Hexanone ug/L 12/19/2412/19/241.0 EPA 8260D/5030BND1,2,3-Trichlorobenzene ug/L 12/19/2412/19/241.0 EPA 8260D/5030BND1,2,3-Trichloropropane ug/L 12/19/2412/19/241.0 EPA 8260D/5030BND1,2,4-Trichlorobenzene ug/L 12/19/2412/19/241.0 EPA 8260D/5030BND1,2,4-Trimethylbenzene ug/L 12/19/2412/19/241.0 EPA 8260D/5030BND1,2-Dibromo-3-chloropropane ug/L 12/19/2412/19/241.0 EPA 8260D/5030BND1,2-Dibromoethane (EDB) ug/L 12/19/2412/19/241.0 EPA 8260D/5030BND1,2-Dichlorobenzene ug/L 12/19/2412/19/241.0 EPA 8260D/5030BND1,2-Dichloroethane ug/L 12/19/2412/19/241.0 EPA 8260D/5030BND1,2-Dichloropropane ug/L 12/19/2412/19/241.0 EPA 8260D/5030BND1,3,5-Trimethylbenzene ug/L 12/19/2412/19/241.0 EPA 8260D/5030BND1,3-Dichlorobenzene ug/L 12/19/2412/19/241.0 EPA 8260D/5030BND1,3-Dichloropropane ug/L 12/19/2412/19/241.0 EPA 8260D/5030BND1,4-Dichlorobenzene Project Name: 23501- Maverik (Chevron), 1350 E 700 S, Clearfield CtF WO#: 24L1007 www.ChemtechFord.com Page 5 of 66Page 5 of 67 xx Chemtech-Ford Laboratories Serving the Intermountain West Since 1953 Certificate of Analysis 9632 South 500 West Sandy, UT 84070 O:(801) 262-7299 F: (866) 792-0093 www.ChemtechFord.com CMT Technical Services, Inc. Michael Sauerwein 2800 South Redwood Road West Valley City, UT 84119-2375 PO#: Receipt: Date Reported: Project Name: 12/11/24 17:10 @ 4.9 °C 12/26/2024 23501- Maverik (Chevron), 1350 E 700 S, Clearfield - Limited Phase II ESA Sample ID: B-2-W (cont.) Lab ID: 24L1007-02Matrix: Water Flag(s)Units Analysis Date/Time Date Sampled: 12/10/24 11:25 Preparation Date/Time Sampled By: Michael Sauerwein Minimum Reporting Limit MethodResult Volatile Organic Compounds (cont.) ug/L 12/19/2412/19/241.0 EPA 8260D/5030BND2,2-Dichloropropane ug/L 12/19/2412/19/241.0 EPA 8260D/5030BND2-Chlorotoluene ug/L 12/19/2412/19/242.0 EPA 8260D/5030BND2-Nitropropane ug/L 12/19/2412/19/241.0 EPA 8260D/5030BND4-Chlorotoluene ug/L 12/19/2412/19/2420.0 EPA 8260D/5030BNDAcetone ug/L 12/19/2412/19/245.0 EPA 8260D/5030BNDAcrylonitrile ug/L 12/19/2412/19/240.4 EPA 8260D/5030BNDBenzene ug/L 12/19/2412/19/241.0 EPA 8260D/5030BNDBromobenzene ug/L 12/19/2412/19/241.0 EPA 8260D/5030BNDBromochloromethane ug/L 12/19/2412/19/241.0 EPA 8260D/5030BNDBromodichloromethane ug/L 12/19/2412/19/241.0 EPA 8260D/5030BNDBromoform ug/L J-LOW-C12/19/2412/19/242.0 EPA 8260D/5030BNDBromomethane ug/L 12/19/2412/19/242.0 EPA 8260D/5030BNDCarbon Disulfide ug/L 12/19/2412/19/241.0 EPA 8260D/5030BNDCarbon Tetrachloride ug/L 12/19/2412/19/241.0 EPA 8260D/5030BNDChlorobenzene ug/L 12/19/2412/19/241.0 EPA 8260D/5030BNDChloroethane ug/L 12/19/2412/19/241.0 EPA 8260D/5030BNDChloroform ug/L J-LOW-L12/19/2412/19/241.0 EPA 8260D/5030BNDChloromethane ug/L 12/19/2412/19/241.0 EPA 8260D/5030BNDcis-1,2-Dichloroethene ug/L 12/19/2412/19/241.0 EPA 8260D/5030BNDcis-1,3-Dichloropropene ug/L J-LOW-C12/19/2412/19/2410.0 EPA 8260D/5030BNDCyclohexanone ug/L 12/19/2412/19/241.0 EPA 8260D/5030BNDDibromochloromethane ug/L 12/19/2412/19/241.0 EPA 8260D/5030BNDDibromomethane ug/L J-LOW-L12/19/2412/19/241.0 EPA 8260D/5030BNDDichlorodifluoromethane ug/L 12/19/2412/19/242.0 EPA 8260D/5030BNDEthyl Acetate ug/L 12/19/2412/19/241.0 EPA 8260D/5030BNDEthylbenzene ug/L 12/19/2412/19/241.0 EPA 8260D/5030BNDEthyl Ether ug/L 12/19/2412/19/241.0 EPA 8260D/5030BNDHexachlorobutadiene ug/L J-LOW-L12/19/2412/19/2420.0 EPA 8260D/5030BNDIsobutanol ug/L 12/19/2412/19/241.0 EPA 8260D/5030BNDIsopropylbenzene ug/L 12/19/2412/19/242.0 EPA 8260D/5030BNDMethyl Ethyl Ketone ug/L J-LOW-C12/19/2412/19/245.0 EPA 8260D/5030BNDMethyl Isobutyl Ketone ug/L 12/19/2412/19/241.0 EPA 8260D/5030BNDMethylene Chloride ug/L 12/19/2412/19/240.6 EPA 8260D/5030BNDMethyl-tert-butyl ether (MTBE) ug/L 12/19/2412/19/241.0 EPA 8260D/5030BNDNaphthalene ug/L J-LOW-C12/19/2412/19/2450.0 EPA 8260D/5030BNDn-Butyl Alcohol Project Name: 23501- Maverik (Chevron), 1350 E 700 S, Clearfield CtF WO#: 24L1007 www.ChemtechFord.com Page 6 of 66Page 6 of 67 xx Chemtech-Ford Laboratories Serving the Intermountain West Since 1953 Certificate of Analysis 9632 South 500 West Sandy, UT 84070 O:(801) 262-7299 F: (866) 792-0093 www.ChemtechFord.com CMT Technical Services, Inc. Michael Sauerwein 2800 South Redwood Road West Valley City, UT 84119-2375 PO#: Receipt: Date Reported: Project Name: 12/11/24 17:10 @ 4.9 °C 12/26/2024 23501- Maverik (Chevron), 1350 E 700 S, Clearfield - Limited Phase II ESA Sample ID: B-2-W (cont.) Lab ID: 24L1007-02Matrix: Water Flag(s)Units Analysis Date/Time Date Sampled: 12/10/24 11:25 Preparation Date/Time Sampled By: Michael Sauerwein Minimum Reporting Limit MethodResult Volatile Organic Compounds (cont.) ug/L 12/19/2412/19/241.0 EPA 8260D/5030BNDn-Butylbenzene ug/L 12/19/2412/19/241.0 EPA 8260D/5030BNDn-Propyl Benzene ug/L J-LOW-L12/19/2412/19/241.0 EPA 8260D/5030BNDPentachloroethane ug/L 12/19/2412/19/241.0 EPA 8260D/5030BNDp-Isopropyltoluene ug/L 12/19/2412/19/241.0 EPA 8260D/5030BNDsec-Butyl Benzene ug/L 12/19/2412/19/241.0 EPA 8260D/5030BNDStyrene ug/L 12/19/2412/19/241.0 EPA 8260D/5030BNDtert-Butylbenzene ug/L 12/19/2412/19/241.0 EPA 8260D/5030BNDTetrachloroethene ug/L 12/19/2412/19/241.0 EPA 8260D/5030BNDToluene ug/L 12/19/2412/19/241.0 EPA 8260D/5030BNDtrans-1,2-Dichloroethene ug/L 12/19/2412/19/241.0 EPA 8260D/5030BNDtrans-1,3-Dichloropropene ug/L 12/19/2412/19/241.0 EPA 8260D/5030BNDTrichloroethene ug/L 12/19/2412/19/241.0 EPA 8260D/5030BNDTrichlorofluoromethane ug/L J-LOW-L12/19/2412/19/240.8 EPA 8260D/5030BNDVinyl Chloride ug/L 12/19/2412/19/243.0 EPA 8260D/5030BNDXylenes, total ug/L 12/19/2412/19/2410.0 EPA 8260D/5030BNDGasoline Range Organics Project Name: 23501- Maverik (Chevron), 1350 E 700 S, Clearfield CtF WO#: 24L1007 www.ChemtechFord.com Page 7 of 66Page 7 of 67 xx Chemtech-Ford Laboratories Serving the Intermountain West Since 1953 Certificate of Analysis 9632 South 500 West Sandy, UT 84070 O:(801) 262-7299 F: (866) 792-0093 www.ChemtechFord.com CMT Technical Services, Inc. Michael Sauerwein 2800 South Redwood Road West Valley City, UT 84119-2375 PO#: Receipt: Date Reported: Project Name: 12/11/24 17:10 @ 4.9 °C 12/26/2024 23501- Maverik (Chevron), 1350 E 700 S, Clearfield - Limited Phase II ESA Sample ID: B-3-W Lab ID: 24L1007-03Matrix: Water Flag(s)Units Analysis Date/Time Date Sampled: 12/10/24 12:20 Preparation Date/Time Sampled By: Michael Sauerwein Minimum Reporting Limit MethodResult Inorganic mg/L 12/16/2412/16/245EPA 1664BNDOil & Grease (HEM) mg/L 12/16/2412/16/245EPA 1664BNDTRPH (SGT-HEM) Metals mg/L 12/13/2412/12/240.0500 EPA 6010D/3010ANDArsenic, Total mg/L 12/13/2412/12/240.005 EPA 6010D/3010A0.857Barium, Total mg/L 12/13/2412/12/240.005 EPA 6010D/3010ANDCadmium, Total mg/L 12/13/2412/12/240.0050 EPA 6010D/3010A0.0385Chromium, Total mg/L 12/13/2412/12/240.0200 EPA 6010D/3010ANDLead, Total mg/L 12/13/2412/12/240.0002 EPA 7470ANDMercury, Total mg/L 12/13/2412/12/240.0300 EPA 6010D/3010ANDSelenium, Total mg/L 12/13/2412/12/240.005 EPA 6010D/3010ANDSilver, Total Diesel Range mg/L 12/18/2412/16/241.0 EPA 8015 CNDDiesel Range Organics Volatile Organic Compounds ug/L 12/19/2412/19/241.0 EPA 8260D/5030BND1,1,1,2-Tetrachloroethane ug/L 12/19/2412/19/241.0 EPA 8260D/5030BND1,1,1-Trichloroethane ug/L 12/19/2412/19/241.0 EPA 8260D/5030BND1,1,2,2-Tetrachloroethane ug/L 12/19/2412/19/241.0 EPA 8260D/5030BND1,1,2-Trichloroethane ug/L J-LOW-L12/19/2412/19/241.0 EPA 8260D/5030BND1,1,2-Trichlorotrifluoroethane ug/L 12/19/2412/19/241.0 EPA 8260D/5030BND1,1-Dichloroethane ug/L 12/19/2412/19/241.0 EPA 8260D/5030BND1,1-Dichloroethene ug/L 12/19/2412/19/241.0 EPA 8260D/5030BND1,1-Dichloropropene ug/L J-LOW-C12/19/2412/19/2410.0 EPA 8260D/5030BND2-Hexanone ug/L 12/19/2412/19/241.0 EPA 8260D/5030BND1,2,3-Trichlorobenzene ug/L 12/19/2412/19/241.0 EPA 8260D/5030BND1,2,3-Trichloropropane ug/L 12/19/2412/19/241.0 EPA 8260D/5030BND1,2,4-Trichlorobenzene ug/L 12/19/2412/19/241.0 EPA 8260D/5030BND1,2,4-Trimethylbenzene ug/L 12/19/2412/19/241.0 EPA 8260D/5030BND1,2-Dibromo-3-chloropropane ug/L 12/19/2412/19/241.0 EPA 8260D/5030BND1,2-Dibromoethane (EDB) ug/L 12/19/2412/19/241.0 EPA 8260D/5030BND1,2-Dichlorobenzene ug/L 12/19/2412/19/241.0 EPA 8260D/5030BND1,2-Dichloroethane ug/L 12/19/2412/19/241.0 EPA 8260D/5030BND1,2-Dichloropropane ug/L 12/19/2412/19/241.0 EPA 8260D/5030BND1,3,5-Trimethylbenzene ug/L 12/19/2412/19/241.0 EPA 8260D/5030BND1,3-Dichlorobenzene ug/L 12/19/2412/19/241.0 EPA 8260D/5030BND1,3-Dichloropropane ug/L 12/19/2412/19/241.0 EPA 8260D/5030BND1,4-Dichlorobenzene Project Name: 23501- Maverik (Chevron), 1350 E 700 S, Clearfield CtF WO#: 24L1007 www.ChemtechFord.com Page 8 of 66Page 8 of 67 xx Chemtech-Ford Laboratories Serving the Intermountain West Since 1953 Certificate of Analysis 9632 South 500 West Sandy, UT 84070 O:(801) 262-7299 F: (866) 792-0093 www.ChemtechFord.com CMT Technical Services, Inc. Michael Sauerwein 2800 South Redwood Road West Valley City, UT 84119-2375 PO#: Receipt: Date Reported: Project Name: 12/11/24 17:10 @ 4.9 °C 12/26/2024 23501- Maverik (Chevron), 1350 E 700 S, Clearfield - Limited Phase II ESA Sample ID: B-3-W (cont.) Lab ID: 24L1007-03Matrix: Water Flag(s)Units Analysis Date/Time Date Sampled: 12/10/24 12:20 Preparation Date/Time Sampled By: Michael Sauerwein Minimum Reporting Limit MethodResult Volatile Organic Compounds (cont.) ug/L 12/19/2412/19/241.0 EPA 8260D/5030BND2,2-Dichloropropane ug/L 12/19/2412/19/241.0 EPA 8260D/5030BND2-Chlorotoluene ug/L 12/19/2412/19/242.0 EPA 8260D/5030BND2-Nitropropane ug/L 12/19/2412/19/241.0 EPA 8260D/5030BND4-Chlorotoluene ug/L 12/19/2412/19/2420.0 EPA 8260D/5030BNDAcetone ug/L 12/19/2412/19/245.0 EPA 8260D/5030BNDAcrylonitrile ug/L 12/19/2412/19/240.4 EPA 8260D/5030BNDBenzene ug/L 12/19/2412/19/241.0 EPA 8260D/5030BNDBromobenzene ug/L 12/19/2412/19/241.0 EPA 8260D/5030BNDBromochloromethane ug/L 12/19/2412/19/241.0 EPA 8260D/5030BNDBromodichloromethane ug/L 12/19/2412/19/241.0 EPA 8260D/5030BNDBromoform ug/L J-LOW-C12/19/2412/19/242.0 EPA 8260D/5030BNDBromomethane ug/L 12/19/2412/19/242.0 EPA 8260D/5030BNDCarbon Disulfide ug/L 12/19/2412/19/241.0 EPA 8260D/5030BNDCarbon Tetrachloride ug/L 12/19/2412/19/241.0 EPA 8260D/5030BNDChlorobenzene ug/L 12/19/2412/19/241.0 EPA 8260D/5030BNDChloroethane ug/L 12/19/2412/19/241.0 EPA 8260D/5030BNDChloroform ug/L J-LOW-L12/19/2412/19/241.0 EPA 8260D/5030BNDChloromethane ug/L 12/19/2412/19/241.0 EPA 8260D/5030BNDcis-1,2-Dichloroethene ug/L 12/19/2412/19/241.0 EPA 8260D/5030BNDcis-1,3-Dichloropropene ug/L J-LOW-C12/19/2412/19/2410.0 EPA 8260D/5030BNDCyclohexanone ug/L 12/19/2412/19/241.0 EPA 8260D/5030BNDDibromochloromethane ug/L 12/19/2412/19/241.0 EPA 8260D/5030BNDDibromomethane ug/L J-LOW-L12/19/2412/19/241.0 EPA 8260D/5030BNDDichlorodifluoromethane ug/L 12/19/2412/19/242.0 EPA 8260D/5030BNDEthyl Acetate ug/L 12/19/2412/19/241.0 EPA 8260D/5030BNDEthylbenzene ug/L 12/19/2412/19/241.0 EPA 8260D/5030BNDEthyl Ether ug/L 12/19/2412/19/241.0 EPA 8260D/5030BNDHexachlorobutadiene ug/L J-LOW-L12/19/2412/19/2420.0 EPA 8260D/5030BNDIsobutanol ug/L 12/19/2412/19/241.0 EPA 8260D/5030BNDIsopropylbenzene ug/L 12/19/2412/19/242.0 EPA 8260D/5030BNDMethyl Ethyl Ketone ug/L J-LOW-C12/19/2412/19/245.0 EPA 8260D/5030BNDMethyl Isobutyl Ketone ug/L 12/19/2412/19/241.0 EPA 8260D/5030BNDMethylene Chloride ug/L 12/19/2412/19/240.6 EPA 8260D/5030BNDMethyl-tert-butyl ether (MTBE) ug/L 12/19/2412/19/241.0 EPA 8260D/5030BNDNaphthalene ug/L J-LOW-C12/19/2412/19/2450.0 EPA 8260D/5030BNDn-Butyl Alcohol Project Name: 23501- Maverik (Chevron), 1350 E 700 S, Clearfield CtF WO#: 24L1007 www.ChemtechFord.com Page 9 of 66Page 9 of 67 xx Chemtech-Ford Laboratories Serving the Intermountain West Since 1953 Certificate of Analysis 9632 South 500 West Sandy, UT 84070 O:(801) 262-7299 F: (866) 792-0093 www.ChemtechFord.com CMT Technical Services, Inc. Michael Sauerwein 2800 South Redwood Road West Valley City, UT 84119-2375 PO#: Receipt: Date Reported: Project Name: 12/11/24 17:10 @ 4.9 °C 12/26/2024 23501- Maverik (Chevron), 1350 E 700 S, Clearfield - Limited Phase II ESA Sample ID: B-3-W (cont.) Lab ID: 24L1007-03Matrix: Water Flag(s)Units Analysis Date/Time Date Sampled: 12/10/24 12:20 Preparation Date/Time Sampled By: Michael Sauerwein Minimum Reporting Limit MethodResult Volatile Organic Compounds (cont.) ug/L 12/19/2412/19/241.0 EPA 8260D/5030BNDn-Butylbenzene ug/L 12/19/2412/19/241.0 EPA 8260D/5030BNDn-Propyl Benzene ug/L J-LOW-L12/19/2412/19/241.0 EPA 8260D/5030BNDPentachloroethane ug/L 12/19/2412/19/241.0 EPA 8260D/5030BNDp-Isopropyltoluene ug/L 12/19/2412/19/241.0 EPA 8260D/5030BNDsec-Butyl Benzene ug/L 12/19/2412/19/241.0 EPA 8260D/5030BNDStyrene ug/L 12/19/2412/19/241.0 EPA 8260D/5030BNDtert-Butylbenzene ug/L 12/19/2412/19/241.0 EPA 8260D/5030BNDTetrachloroethene ug/L 12/19/2412/19/241.0 EPA 8260D/5030BNDToluene ug/L 12/19/2412/19/241.0 EPA 8260D/5030BNDtrans-1,2-Dichloroethene ug/L 12/19/2412/19/241.0 EPA 8260D/5030BNDtrans-1,3-Dichloropropene ug/L 12/19/2412/19/241.0 EPA 8260D/5030BNDTrichloroethene ug/L 12/19/2412/19/241.0 EPA 8260D/5030BNDTrichlorofluoromethane ug/L J-LOW-L12/19/2412/19/240.8 EPA 8260D/5030BNDVinyl Chloride ug/L 12/19/2412/19/243.0 EPA 8260D/5030BNDXylenes, total ug/L 12/19/2412/19/2410.0 EPA 8260D/5030BNDGasoline Range Organics Project Name: 23501- Maverik (Chevron), 1350 E 700 S, Clearfield CtF WO#: 24L1007 www.ChemtechFord.com Page 10 of 66Page 10 of 67 xx Chemtech-Ford Laboratories Serving the Intermountain West Since 1953 Certificate of Analysis 9632 South 500 West Sandy, UT 84070 O:(801) 262-7299 F: (866) 792-0093 www.ChemtechFord.com CMT Technical Services, Inc. Michael Sauerwein 2800 South Redwood Road West Valley City, UT 84119-2375 PO#: Receipt: Date Reported: Project Name: 12/11/24 17:10 @ 4.9 °C 12/26/2024 23501- Maverik (Chevron), 1350 E 700 S, Clearfield - Limited Phase II ESA Sample ID: B-4-W Lab ID: 24L1007-04Matrix: Water Flag(s)Units Analysis Date/Time Date Sampled: 12/10/24 13:10 Preparation Date/Time Sampled By: Michael Sauerwein Minimum Reporting Limit MethodResult Diesel Range mg/L 12/18/2412/16/241.0 EPA 8015 CNDDiesel Range Organics Volatile Organic Compounds ug/L 12/19/2412/19/241.0 EPA 8260D/5030BND1,1,1,2-Tetrachloroethane ug/L 12/19/2412/19/241.0 EPA 8260D/5030BND1,1,1-Trichloroethane ug/L 12/19/2412/19/241.0 EPA 8260D/5030BND1,1,2,2-Tetrachloroethane ug/L 12/19/2412/19/241.0 EPA 8260D/5030BND1,1,2-Trichloroethane ug/L J-LOW-L12/19/2412/19/241.0 EPA 8260D/5030BND1,1,2-Trichlorotrifluoroethane ug/L 12/19/2412/19/241.0 EPA 8260D/5030BND1,1-Dichloroethane ug/L 12/19/2412/19/241.0 EPA 8260D/5030BND1,1-Dichloroethene ug/L 12/19/2412/19/241.0 EPA 8260D/5030BND1,1-Dichloropropene ug/L J-LOW-C12/19/2412/19/2410.0 EPA 8260D/5030BND2-Hexanone ug/L 12/19/2412/19/241.0 EPA 8260D/5030BND1,2,3-Trichlorobenzene ug/L 12/19/2412/19/241.0 EPA 8260D/5030BND1,2,3-Trichloropropane ug/L 12/19/2412/19/241.0 EPA 8260D/5030BND1,2,4-Trichlorobenzene ug/L 12/19/2412/19/241.0 EPA 8260D/5030BND1,2,4-Trimethylbenzene ug/L 12/19/2412/19/241.0 EPA 8260D/5030BND1,2-Dibromo-3-chloropropane ug/L 12/19/2412/19/241.0 EPA 8260D/5030BND1,2-Dibromoethane (EDB) ug/L 12/19/2412/19/241.0 EPA 8260D/5030BND1,2-Dichlorobenzene ug/L 12/19/2412/19/241.0 EPA 8260D/5030BND1,2-Dichloroethane ug/L 12/19/2412/19/241.0 EPA 8260D/5030BND1,2-Dichloropropane ug/L 12/19/2412/19/241.0 EPA 8260D/5030BND1,3,5-Trimethylbenzene ug/L 12/19/2412/19/241.0 EPA 8260D/5030BND1,3-Dichlorobenzene ug/L 12/19/2412/19/241.0 EPA 8260D/5030BND1,3-Dichloropropane ug/L 12/19/2412/19/241.0 EPA 8260D/5030BND1,4-Dichlorobenzene ug/L 12/19/2412/19/241.0 EPA 8260D/5030BND2,2-Dichloropropane ug/L 12/19/2412/19/241.0 EPA 8260D/5030BND2-Chlorotoluene ug/L 12/19/2412/19/242.0 EPA 8260D/5030BND2-Nitropropane ug/L 12/19/2412/19/241.0 EPA 8260D/5030BND4-Chlorotoluene ug/L 12/19/2412/19/2420.0 EPA 8260D/5030BNDAcetone ug/L 12/19/2412/19/245.0 EPA 8260D/5030BNDAcrylonitrile ug/L 12/19/2412/19/240.4 EPA 8260D/5030BNDBenzene ug/L 12/19/2412/19/241.0 EPA 8260D/5030BNDBromobenzene ug/L 12/19/2412/19/241.0 EPA 8260D/5030BNDBromochloromethane ug/L 12/19/2412/19/241.0 EPA 8260D/5030BNDBromodichloromethane ug/L 12/19/2412/19/241.0 EPA 8260D/5030BNDBromoform ug/L J-LOW-C12/19/2412/19/242.0 EPA 8260D/5030BNDBromomethane Project Name: 23501- Maverik (Chevron), 1350 E 700 S, Clearfield CtF WO#: 24L1007 www.ChemtechFord.com Page 11 of 66Page 11 of 67 xx Chemtech-Ford Laboratories Serving the Intermountain West Since 1953 Certificate of Analysis 9632 South 500 West Sandy, UT 84070 O:(801) 262-7299 F: (866) 792-0093 www.ChemtechFord.com CMT Technical Services, Inc. Michael Sauerwein 2800 South Redwood Road West Valley City, UT 84119-2375 PO#: Receipt: Date Reported: Project Name: 12/11/24 17:10 @ 4.9 °C 12/26/2024 23501- Maverik (Chevron), 1350 E 700 S, Clearfield - Limited Phase II ESA Sample ID: B-4-W (cont.) Lab ID: 24L1007-04Matrix: Water Flag(s)Units Analysis Date/Time Date Sampled: 12/10/24 13:10 Preparation Date/Time Sampled By: Michael Sauerwein Minimum Reporting Limit MethodResult Volatile Organic Compounds (cont.) ug/L 12/19/2412/19/242.0 EPA 8260D/5030BNDCarbon Disulfide ug/L 12/19/2412/19/241.0 EPA 8260D/5030BNDCarbon Tetrachloride ug/L 12/19/2412/19/241.0 EPA 8260D/5030BNDChlorobenzene ug/L 12/19/2412/19/241.0 EPA 8260D/5030BNDChloroethane ug/L 12/19/2412/19/241.0 EPA 8260D/5030BNDChloroform ug/L J-LOW-L12/19/2412/19/241.0 EPA 8260D/5030BNDChloromethane ug/L 12/19/2412/19/241.0 EPA 8260D/5030BNDcis-1,2-Dichloroethene ug/L 12/19/2412/19/241.0 EPA 8260D/5030BNDcis-1,3-Dichloropropene ug/L J-LOW-C12/19/2412/19/2410.0 EPA 8260D/5030BNDCyclohexanone ug/L 12/19/2412/19/241.0 EPA 8260D/5030BNDDibromochloromethane ug/L 12/19/2412/19/241.0 EPA 8260D/5030BNDDibromomethane ug/L J-LOW-L12/19/2412/19/241.0 EPA 8260D/5030BNDDichlorodifluoromethane ug/L 12/19/2412/19/242.0 EPA 8260D/5030BNDEthyl Acetate ug/L 12/19/2412/19/241.0 EPA 8260D/5030BNDEthylbenzene ug/L 12/19/2412/19/241.0 EPA 8260D/5030BNDEthyl Ether ug/L 12/19/2412/19/241.0 EPA 8260D/5030BNDHexachlorobutadiene ug/L J-LOW-L12/19/2412/19/2420.0 EPA 8260D/5030BNDIsobutanol ug/L 12/19/2412/19/241.0 EPA 8260D/5030BNDIsopropylbenzene ug/L 12/19/2412/19/242.0 EPA 8260D/5030BNDMethyl Ethyl Ketone ug/L J-LOW-C12/19/2412/19/245.0 EPA 8260D/5030BNDMethyl Isobutyl Ketone ug/L 12/19/2412/19/241.0 EPA 8260D/5030BNDMethylene Chloride ug/L 12/19/2412/19/240.6 EPA 8260D/5030BNDMethyl-tert-butyl ether (MTBE) ug/L 12/19/2412/19/241.0 EPA 8260D/5030BNDNaphthalene ug/L J-LOW-C12/19/2412/19/2450.0 EPA 8260D/5030BNDn-Butyl Alcohol ug/L 12/19/2412/19/241.0 EPA 8260D/5030BNDn-Butylbenzene ug/L 12/19/2412/19/241.0 EPA 8260D/5030BNDn-Propyl Benzene ug/L J-LOW-L12/19/2412/19/241.0 EPA 8260D/5030BNDPentachloroethane ug/L 12/19/2412/19/241.0 EPA 8260D/5030BNDp-Isopropyltoluene ug/L 12/19/2412/19/241.0 EPA 8260D/5030BNDsec-Butyl Benzene ug/L 12/19/2412/19/241.0 EPA 8260D/5030BNDStyrene ug/L 12/19/2412/19/241.0 EPA 8260D/5030BNDtert-Butylbenzene ug/L 12/19/2412/19/241.0 EPA 8260D/5030BNDTetrachloroethene ug/L 12/19/2412/19/241.0 EPA 8260D/5030BNDToluene ug/L 12/19/2412/19/241.0 EPA 8260D/5030BNDtrans-1,2-Dichloroethene ug/L 12/19/2412/19/241.0 EPA 8260D/5030BNDtrans-1,3-Dichloropropene ug/L 12/19/2412/19/241.0 EPA 8260D/5030BNDTrichloroethene Project Name: 23501- Maverik (Chevron), 1350 E 700 S, Clearfield CtF WO#: 24L1007 www.ChemtechFord.com Page 12 of 66Page 12 of 67 xx Chemtech-Ford Laboratories Serving the Intermountain West Since 1953 Certificate of Analysis 9632 South 500 West Sandy, UT 84070 O:(801) 262-7299 F: (866) 792-0093 www.ChemtechFord.com CMT Technical Services, Inc. Michael Sauerwein 2800 South Redwood Road West Valley City, UT 84119-2375 PO#: Receipt: Date Reported: Project Name: 12/11/24 17:10 @ 4.9 °C 12/26/2024 23501- Maverik (Chevron), 1350 E 700 S, Clearfield - Limited Phase II ESA Sample ID: B-4-W (cont.) Lab ID: 24L1007-04Matrix: Water Flag(s)Units Analysis Date/Time Date Sampled: 12/10/24 13:10 Preparation Date/Time Sampled By: Michael Sauerwein Minimum Reporting Limit MethodResult Volatile Organic Compounds (cont.) ug/L 12/19/2412/19/241.0 EPA 8260D/5030BNDTrichlorofluoromethane ug/L J-LOW-L12/19/2412/19/240.8 EPA 8260D/5030BNDVinyl Chloride ug/L 12/19/2412/19/243.0 EPA 8260D/5030BNDXylenes, total ug/L 12/19/2412/19/2410.0 EPA 8260D/5030B149Gasoline Range Organics Project Name: 23501- Maverik (Chevron), 1350 E 700 S, Clearfield CtF WO#: 24L1007 www.ChemtechFord.com Page 13 of 66Page 13 of 67 xx Chemtech-Ford Laboratories Serving the Intermountain West Since 1953 Certificate of Analysis 9632 South 500 West Sandy, UT 84070 O:(801) 262-7299 F: (866) 792-0093 www.ChemtechFord.com CMT Technical Services, Inc. Michael Sauerwein 2800 South Redwood Road West Valley City, UT 84119-2375 PO#: Receipt: Date Reported: Project Name: 12/11/24 17:10 @ 4.9 °C 12/26/2024 23501- Maverik (Chevron), 1350 E 700 S, Clearfield - Limited Phase II ESA Sample ID: B-5-W Lab ID: 24L1007-05Matrix: Water Flag(s)Units Analysis Date/Time Date Sampled: 12/10/24 14:10 Preparation Date/Time Sampled By: Michael Sauerwein Minimum Reporting Limit MethodResult Diesel Range mg/L 12/18/2412/16/241.0 EPA 8015 CNDDiesel Range Organics Volatile Organic Compounds ug/L 12/19/2412/19/241.0 EPA 8260D/5030BND1,1,1,2-Tetrachloroethane ug/L 12/19/2412/19/241.0 EPA 8260D/5030BND1,1,1-Trichloroethane ug/L 12/19/2412/19/241.0 EPA 8260D/5030BND1,1,2,2-Tetrachloroethane ug/L 12/19/2412/19/241.0 EPA 8260D/5030BND1,1,2-Trichloroethane ug/L J-LOW-L12/19/2412/19/241.0 EPA 8260D/5030BND1,1,2-Trichlorotrifluoroethane ug/L 12/19/2412/19/241.0 EPA 8260D/5030BND1,1-Dichloroethane ug/L 12/19/2412/19/241.0 EPA 8260D/5030BND1,1-Dichloroethene ug/L 12/19/2412/19/241.0 EPA 8260D/5030BND1,1-Dichloropropene ug/L J-LOW-C12/19/2412/19/2410.0 EPA 8260D/5030BND2-Hexanone ug/L 12/19/2412/19/241.0 EPA 8260D/5030BND1,2,3-Trichlorobenzene ug/L 12/19/2412/19/241.0 EPA 8260D/5030BND1,2,3-Trichloropropane ug/L 12/19/2412/19/241.0 EPA 8260D/5030BND1,2,4-Trichlorobenzene ug/L 12/19/2412/19/241.0 EPA 8260D/5030B1.71,2,4-Trimethylbenzene ug/L 12/19/2412/19/241.0 EPA 8260D/5030BND1,2-Dibromo-3-chloropropane ug/L 12/19/2412/19/241.0 EPA 8260D/5030BND1,2-Dibromoethane (EDB) ug/L 12/19/2412/19/241.0 EPA 8260D/5030BND1,2-Dichlorobenzene ug/L 12/19/2412/19/241.0 EPA 8260D/5030BND1,2-Dichloroethane ug/L 12/19/2412/19/241.0 EPA 8260D/5030BND1,2-Dichloropropane ug/L 12/19/2412/19/241.0 EPA 8260D/5030BND1,3,5-Trimethylbenzene ug/L 12/19/2412/19/241.0 EPA 8260D/5030BND1,3-Dichlorobenzene ug/L 12/19/2412/19/241.0 EPA 8260D/5030BND1,3-Dichloropropane ug/L 12/19/2412/19/241.0 EPA 8260D/5030BND1,4-Dichlorobenzene ug/L 12/19/2412/19/241.0 EPA 8260D/5030BND2,2-Dichloropropane ug/L 12/19/2412/19/241.0 EPA 8260D/5030BND2-Chlorotoluene ug/L 12/19/2412/19/242.0 EPA 8260D/5030BND2-Nitropropane ug/L 12/19/2412/19/241.0 EPA 8260D/5030BND4-Chlorotoluene ug/L 12/19/2412/19/2420.0 EPA 8260D/5030BNDAcetone ug/L 12/19/2412/19/245.0 EPA 8260D/5030BNDAcrylonitrile ug/L 12/19/2412/19/240.4 EPA 8260D/5030B0.5Benzene ug/L 12/19/2412/19/241.0 EPA 8260D/5030BNDBromobenzene ug/L 12/19/2412/19/241.0 EPA 8260D/5030BNDBromochloromethane ug/L 12/19/2412/19/241.0 EPA 8260D/5030BNDBromodichloromethane ug/L 12/19/2412/19/241.0 EPA 8260D/5030BNDBromoform ug/L J-LOW-C12/19/2412/19/242.0 EPA 8260D/5030BNDBromomethane Project Name: 23501- Maverik (Chevron), 1350 E 700 S, Clearfield CtF WO#: 24L1007 www.ChemtechFord.com Page 14 of 66Page 14 of 67 xx Chemtech-Ford Laboratories Serving the Intermountain West Since 1953 Certificate of Analysis 9632 South 500 West Sandy, UT 84070 O:(801) 262-7299 F: (866) 792-0093 www.ChemtechFord.com CMT Technical Services, Inc. Michael Sauerwein 2800 South Redwood Road West Valley City, UT 84119-2375 PO#: Receipt: Date Reported: Project Name: 12/11/24 17:10 @ 4.9 °C 12/26/2024 23501- Maverik (Chevron), 1350 E 700 S, Clearfield - Limited Phase II ESA Sample ID: B-5-W (cont.) Lab ID: 24L1007-05Matrix: Water Flag(s)Units Analysis Date/Time Date Sampled: 12/10/24 14:10 Preparation Date/Time Sampled By: Michael Sauerwein Minimum Reporting Limit MethodResult Volatile Organic Compounds (cont.) ug/L 12/19/2412/19/242.0 EPA 8260D/5030BNDCarbon Disulfide ug/L 12/19/2412/19/241.0 EPA 8260D/5030BNDCarbon Tetrachloride ug/L 12/19/2412/19/241.0 EPA 8260D/5030BNDChlorobenzene ug/L 12/19/2412/19/241.0 EPA 8260D/5030BNDChloroethane ug/L 12/19/2412/19/241.0 EPA 8260D/5030BNDChloroform ug/L J-LOW-L12/19/2412/19/241.0 EPA 8260D/5030BNDChloromethane ug/L 12/19/2412/19/241.0 EPA 8260D/5030BNDcis-1,2-Dichloroethene ug/L 12/19/2412/19/241.0 EPA 8260D/5030BNDcis-1,3-Dichloropropene ug/L J-LOW-C12/19/2412/19/2410.0 EPA 8260D/5030BNDCyclohexanone ug/L 12/19/2412/19/241.0 EPA 8260D/5030BNDDibromochloromethane ug/L 12/19/2412/19/241.0 EPA 8260D/5030BNDDibromomethane ug/L J-LOW-L12/19/2412/19/241.0 EPA 8260D/5030BNDDichlorodifluoromethane ug/L 12/19/2412/19/242.0 EPA 8260D/5030BNDEthyl Acetate ug/L 12/19/2412/19/241.0 EPA 8260D/5030BNDEthylbenzene ug/L 12/19/2412/19/241.0 EPA 8260D/5030BNDEthyl Ether ug/L 12/19/2412/19/241.0 EPA 8260D/5030BNDHexachlorobutadiene ug/L J-LOW-L12/19/2412/19/2420.0 EPA 8260D/5030BNDIsobutanol ug/L 12/19/2412/19/241.0 EPA 8260D/5030BNDIsopropylbenzene ug/L 12/19/2412/19/242.0 EPA 8260D/5030BNDMethyl Ethyl Ketone ug/L J-LOW-C12/19/2412/19/245.0 EPA 8260D/5030BNDMethyl Isobutyl Ketone ug/L 12/19/2412/19/241.0 EPA 8260D/5030BNDMethylene Chloride ug/L 12/19/2412/19/240.6 EPA 8260D/5030BNDMethyl-tert-butyl ether (MTBE) ug/L 12/19/2412/19/241.0 EPA 8260D/5030BNDNaphthalene ug/L J-LOW-C12/19/2412/19/2450.0 EPA 8260D/5030BNDn-Butyl Alcohol ug/L 12/19/2412/19/241.0 EPA 8260D/5030BNDn-Butylbenzene ug/L 12/19/2412/19/241.0 EPA 8260D/5030BNDn-Propyl Benzene ug/L J-LOW-L12/19/2412/19/241.0 EPA 8260D/5030BNDPentachloroethane ug/L 12/19/2412/19/241.0 EPA 8260D/5030BNDp-Isopropyltoluene ug/L 12/19/2412/19/241.0 EPA 8260D/5030BNDsec-Butyl Benzene ug/L 12/19/2412/19/241.0 EPA 8260D/5030BNDStyrene ug/L 12/19/2412/19/241.0 EPA 8260D/5030BNDtert-Butylbenzene ug/L 12/19/2412/19/241.0 EPA 8260D/5030BNDTetrachloroethene ug/L 12/19/2412/19/241.0 EPA 8260D/5030BNDToluene ug/L 12/19/2412/19/241.0 EPA 8260D/5030BNDtrans-1,2-Dichloroethene ug/L 12/19/2412/19/241.0 EPA 8260D/5030BNDtrans-1,3-Dichloropropene ug/L 12/19/2412/19/241.0 EPA 8260D/5030BNDTrichloroethene Project Name: 23501- Maverik (Chevron), 1350 E 700 S, Clearfield CtF WO#: 24L1007 www.ChemtechFord.com Page 15 of 66Page 15 of 67 xx Chemtech-Ford Laboratories Serving the Intermountain West Since 1953 Certificate of Analysis 9632 South 500 West Sandy, UT 84070 O:(801) 262-7299 F: (866) 792-0093 www.ChemtechFord.com CMT Technical Services, Inc. Michael Sauerwein 2800 South Redwood Road West Valley City, UT 84119-2375 PO#: Receipt: Date Reported: Project Name: 12/11/24 17:10 @ 4.9 °C 12/26/2024 23501- Maverik (Chevron), 1350 E 700 S, Clearfield - Limited Phase II ESA Sample ID: B-5-W (cont.) Lab ID: 24L1007-05Matrix: Water Flag(s)Units Analysis Date/Time Date Sampled: 12/10/24 14:10 Preparation Date/Time Sampled By: Michael Sauerwein Minimum Reporting Limit MethodResult Volatile Organic Compounds (cont.) ug/L 12/19/2412/19/241.0 EPA 8260D/5030BNDTrichlorofluoromethane ug/L J-LOW-L12/19/2412/19/240.8 EPA 8260D/5030BNDVinyl Chloride ug/L 12/19/2412/19/243.0 EPA 8260D/5030B4.5Xylenes, total ug/L 12/19/2412/19/2410.0 EPA 8260D/5030B30.2Gasoline Range Organics Project Name: 23501- Maverik (Chevron), 1350 E 700 S, Clearfield CtF WO#: 24L1007 www.ChemtechFord.com Page 16 of 66Page 16 of 67 xx Chemtech-Ford Laboratories Serving the Intermountain West Since 1953 Certificate of Analysis 9632 South 500 West Sandy, UT 84070 O:(801) 262-7299 F: (866) 792-0093 www.ChemtechFord.com CMT Technical Services, Inc. Michael Sauerwein 2800 South Redwood Road West Valley City, UT 84119-2375 PO#: Receipt: Date Reported: Project Name: 12/11/24 17:10 @ 4.9 °C 12/26/2024 23501- Maverik (Chevron), 1350 E 700 S, Clearfield - Limited Phase II ESA Sample ID: B-6-W Lab ID: 24L1007-06Matrix: Water Flag(s)Units Analysis Date/Time Date Sampled: 12/10/24 15:00 Preparation Date/Time Sampled By: Michael Sauerwein Minimum Reporting Limit MethodResult Diesel Range mg/L 12/18/2412/16/241.0 EPA 8015 CNDDiesel Range Organics Volatile Organic Compounds ug/L 12/19/2412/19/241.0 EPA 8260D/5030BND1,1,1,2-Tetrachloroethane ug/L 12/19/2412/19/241.0 EPA 8260D/5030BND1,1,1-Trichloroethane ug/L 12/19/2412/19/241.0 EPA 8260D/5030BND1,1,2,2-Tetrachloroethane ug/L 12/19/2412/19/241.0 EPA 8260D/5030BND1,1,2-Trichloroethane ug/L J-LOW-L12/19/2412/19/241.0 EPA 8260D/5030BND1,1,2-Trichlorotrifluoroethane ug/L 12/19/2412/19/241.0 EPA 8260D/5030BND1,1-Dichloroethane ug/L 12/19/2412/19/241.0 EPA 8260D/5030BND1,1-Dichloroethene ug/L 12/19/2412/19/241.0 EPA 8260D/5030BND1,1-Dichloropropene ug/L J-LOW-C12/19/2412/19/2410.0 EPA 8260D/5030BND2-Hexanone ug/L 12/19/2412/19/241.0 EPA 8260D/5030BND1,2,3-Trichlorobenzene ug/L 12/19/2412/19/241.0 EPA 8260D/5030BND1,2,3-Trichloropropane ug/L 12/19/2412/19/241.0 EPA 8260D/5030BND1,2,4-Trichlorobenzene ug/L 12/19/2412/19/241.0 EPA 8260D/5030B1.51,2,4-Trimethylbenzene ug/L 12/19/2412/19/241.0 EPA 8260D/5030BND1,2-Dibromo-3-chloropropane ug/L 12/19/2412/19/241.0 EPA 8260D/5030BND1,2-Dibromoethane (EDB) ug/L 12/19/2412/19/241.0 EPA 8260D/5030BND1,2-Dichlorobenzene ug/L 12/19/2412/19/241.0 EPA 8260D/5030BND1,2-Dichloroethane ug/L 12/19/2412/19/241.0 EPA 8260D/5030BND1,2-Dichloropropane ug/L 12/19/2412/19/241.0 EPA 8260D/5030BND1,3,5-Trimethylbenzene ug/L 12/19/2412/19/241.0 EPA 8260D/5030BND1,3-Dichlorobenzene ug/L 12/19/2412/19/241.0 EPA 8260D/5030BND1,3-Dichloropropane ug/L 12/19/2412/19/241.0 EPA 8260D/5030BND1,4-Dichlorobenzene ug/L 12/19/2412/19/241.0 EPA 8260D/5030BND2,2-Dichloropropane ug/L 12/19/2412/19/241.0 EPA 8260D/5030BND2-Chlorotoluene ug/L 12/19/2412/19/242.0 EPA 8260D/5030BND2-Nitropropane ug/L 12/19/2412/19/241.0 EPA 8260D/5030BND4-Chlorotoluene ug/L 12/19/2412/19/2420.0 EPA 8260D/5030BNDAcetone ug/L 12/19/2412/19/245.0 EPA 8260D/5030BNDAcrylonitrile ug/L 12/19/2412/19/240.4 EPA 8260D/5030B1.1Benzene ug/L 12/19/2412/19/241.0 EPA 8260D/5030BNDBromobenzene ug/L 12/19/2412/19/241.0 EPA 8260D/5030BNDBromochloromethane ug/L 12/19/2412/19/241.0 EPA 8260D/5030BNDBromodichloromethane ug/L 12/19/2412/19/241.0 EPA 8260D/5030BNDBromoform ug/L J-LOW-C12/19/2412/19/242.0 EPA 8260D/5030BNDBromomethane Project Name: 23501- Maverik (Chevron), 1350 E 700 S, Clearfield CtF WO#: 24L1007 www.ChemtechFord.com Page 17 of 66Page 17 of 67 xx Chemtech-Ford Laboratories Serving the Intermountain West Since 1953 Certificate of Analysis 9632 South 500 West Sandy, UT 84070 O:(801) 262-7299 F: (866) 792-0093 www.ChemtechFord.com CMT Technical Services, Inc. Michael Sauerwein 2800 South Redwood Road West Valley City, UT 84119-2375 PO#: Receipt: Date Reported: Project Name: 12/11/24 17:10 @ 4.9 °C 12/26/2024 23501- Maverik (Chevron), 1350 E 700 S, Clearfield - Limited Phase II ESA Sample ID: B-6-W (cont.) Lab ID: 24L1007-06Matrix: Water Flag(s)Units Analysis Date/Time Date Sampled: 12/10/24 15:00 Preparation Date/Time Sampled By: Michael Sauerwein Minimum Reporting Limit MethodResult Volatile Organic Compounds (cont.) ug/L 12/19/2412/19/242.0 EPA 8260D/5030BNDCarbon Disulfide ug/L 12/19/2412/19/241.0 EPA 8260D/5030BNDCarbon Tetrachloride ug/L 12/19/2412/19/241.0 EPA 8260D/5030BNDChlorobenzene ug/L 12/19/2412/19/241.0 EPA 8260D/5030BNDChloroethane ug/L 12/19/2412/19/241.0 EPA 8260D/5030BNDChloroform ug/L J-LOW-L12/19/2412/19/241.0 EPA 8260D/5030BNDChloromethane ug/L 12/19/2412/19/241.0 EPA 8260D/5030BNDcis-1,2-Dichloroethene ug/L 12/19/2412/19/241.0 EPA 8260D/5030BNDcis-1,3-Dichloropropene ug/L J-LOW-C12/19/2412/19/2410.0 EPA 8260D/5030BNDCyclohexanone ug/L 12/19/2412/19/241.0 EPA 8260D/5030BNDDibromochloromethane ug/L 12/19/2412/19/241.0 EPA 8260D/5030BNDDibromomethane ug/L J-LOW-L12/19/2412/19/241.0 EPA 8260D/5030BNDDichlorodifluoromethane ug/L 12/19/2412/19/242.0 EPA 8260D/5030BNDEthyl Acetate ug/L 12/19/2412/19/241.0 EPA 8260D/5030B5.0Ethylbenzene ug/L 12/19/2412/19/241.0 EPA 8260D/5030BNDEthyl Ether ug/L 12/19/2412/19/241.0 EPA 8260D/5030BNDHexachlorobutadiene ug/L J-LOW-L12/19/2412/19/2420.0 EPA 8260D/5030BNDIsobutanol ug/L 12/19/2412/19/241.0 EPA 8260D/5030BNDIsopropylbenzene ug/L 12/19/2412/19/242.0 EPA 8260D/5030BNDMethyl Ethyl Ketone ug/L J-LOW-C12/19/2412/19/245.0 EPA 8260D/5030BNDMethyl Isobutyl Ketone ug/L 12/19/2412/19/241.0 EPA 8260D/5030BNDMethylene Chloride ug/L 12/19/2412/19/240.6 EPA 8260D/5030BNDMethyl-tert-butyl ether (MTBE) ug/L 12/19/2412/19/241.0 EPA 8260D/5030BNDNaphthalene ug/L J-LOW-C12/19/2412/19/2450.0 EPA 8260D/5030BNDn-Butyl Alcohol ug/L 12/19/2412/19/241.0 EPA 8260D/5030BNDn-Butylbenzene ug/L 12/19/2412/19/241.0 EPA 8260D/5030BNDn-Propyl Benzene ug/L J-LOW-L12/19/2412/19/241.0 EPA 8260D/5030BNDPentachloroethane ug/L 12/19/2412/19/241.0 EPA 8260D/5030BNDp-Isopropyltoluene ug/L 12/19/2412/19/241.0 EPA 8260D/5030BNDsec-Butyl Benzene ug/L 12/19/2412/19/241.0 EPA 8260D/5030BNDStyrene ug/L 12/19/2412/19/241.0 EPA 8260D/5030BNDtert-Butylbenzene ug/L 12/19/2412/19/241.0 EPA 8260D/5030BNDTetrachloroethene ug/L 12/19/2412/19/241.0 EPA 8260D/5030BNDToluene ug/L 12/19/2412/19/241.0 EPA 8260D/5030BNDtrans-1,2-Dichloroethene ug/L 12/19/2412/19/241.0 EPA 8260D/5030BNDtrans-1,3-Dichloropropene ug/L 12/19/2412/19/241.0 EPA 8260D/5030BNDTrichloroethene Project Name: 23501- Maverik (Chevron), 1350 E 700 S, Clearfield CtF WO#: 24L1007 www.ChemtechFord.com Page 18 of 66Page 18 of 67 xx Chemtech-Ford Laboratories Serving the Intermountain West Since 1953 Certificate of Analysis 9632 South 500 West Sandy, UT 84070 O:(801) 262-7299 F: (866) 792-0093 www.ChemtechFord.com CMT Technical Services, Inc. Michael Sauerwein 2800 South Redwood Road West Valley City, UT 84119-2375 PO#: Receipt: Date Reported: Project Name: 12/11/24 17:10 @ 4.9 °C 12/26/2024 23501- Maverik (Chevron), 1350 E 700 S, Clearfield - Limited Phase II ESA Sample ID: B-6-W (cont.) Lab ID: 24L1007-06Matrix: Water Flag(s)Units Analysis Date/Time Date Sampled: 12/10/24 15:00 Preparation Date/Time Sampled By: Michael Sauerwein Minimum Reporting Limit MethodResult Volatile Organic Compounds (cont.) ug/L 12/19/2412/19/241.0 EPA 8260D/5030BNDTrichlorofluoromethane ug/L J-LOW-L12/19/2412/19/240.8 EPA 8260D/5030BNDVinyl Chloride ug/L 12/19/2412/19/243.0 EPA 8260D/5030B11.8Xylenes, total ug/L 12/19/2412/19/2410.0 EPA 8260D/5030B34.5Gasoline Range Organics Project Name: 23501- Maverik (Chevron), 1350 E 700 S, Clearfield CtF WO#: 24L1007 www.ChemtechFord.com Page 19 of 66Page 19 of 67 xx Chemtech-Ford Laboratories Serving the Intermountain West Since 1953 Certificate of Analysis 9632 South 500 West Sandy, UT 84070 O:(801) 262-7299 F: (866) 792-0093 www.ChemtechFord.com CMT Technical Services, Inc. Michael Sauerwein 2800 South Redwood Road West Valley City, UT 84119-2375 PO#: Receipt: Date Reported: Project Name: 12/11/24 17:10 @ 4.9 °C 12/26/2024 23501- Maverik (Chevron), 1350 E 700 S, Clearfield - Limited Phase II ESA Sample ID: B-7-W Lab ID: 24L1007-07Matrix: Water Flag(s)Units Analysis Date/Time Date Sampled: 12/11/24 10:25 Preparation Date/Time Sampled By: Michael Sauerwein Minimum Reporting Limit MethodResult Diesel Range mg/L 12/18/2412/16/241.0 EPA 8015 CNDDiesel Range Organics Volatile Organic Compounds ug/L 12/20/2412/20/241.0 EPA 8260D/5030BND1,1,1,2-Tetrachloroethane ug/L 12/20/2412/20/241.0 EPA 8260D/5030BND1,1,1-Trichloroethane ug/L 12/20/2412/20/241.0 EPA 8260D/5030BND1,1,2,2-Tetrachloroethane ug/L 12/20/2412/20/241.0 EPA 8260D/5030BND1,1,2-Trichloroethane ug/L J-LOW-L12/20/2412/20/241.0 EPA 8260D/5030BND1,1,2-Trichlorotrifluoroethane ug/L 12/20/2412/20/241.0 EPA 8260D/5030BND1,1-Dichloroethane ug/L 12/20/2412/20/241.0 EPA 8260D/5030BND1,1-Dichloroethene ug/L 12/20/2412/20/241.0 EPA 8260D/5030BND1,1-Dichloropropene ug/L J-LOW-C12/20/2412/20/2410.0 EPA 8260D/5030BND2-Hexanone ug/L J-LOW-L12/20/2412/20/241.0 EPA 8260D/5030BND1,2,3-Trichlorobenzene ug/L 12/20/2412/20/241.0 EPA 8260D/5030BND1,2,3-Trichloropropane ug/L 12/20/2412/20/241.0 EPA 8260D/5030BND1,2,4-Trichlorobenzene ug/L 12/20/2412/20/241.0 EPA 8260D/5030B18.41,2,4-Trimethylbenzene ug/L 12/20/2412/20/241.0 EPA 8260D/5030BND1,2-Dibromo-3-chloropropane ug/L 12/20/2412/20/241.0 EPA 8260D/5030BND1,2-Dibromoethane (EDB) ug/L 12/20/2412/20/241.0 EPA 8260D/5030BND1,2-Dichlorobenzene ug/L 12/20/2412/20/241.0 EPA 8260D/5030BND1,2-Dichloroethane ug/L 12/20/2412/20/241.0 EPA 8260D/5030BND1,2-Dichloropropane ug/L 12/20/2412/20/241.0 EPA 8260D/5030B7.11,3,5-Trimethylbenzene ug/L 12/20/2412/20/241.0 EPA 8260D/5030BND1,3-Dichlorobenzene ug/L 12/20/2412/20/241.0 EPA 8260D/5030BND1,3-Dichloropropane ug/L 12/20/2412/20/241.0 EPA 8260D/5030BND1,4-Dichlorobenzene ug/L 12/20/2412/20/241.0 EPA 8260D/5030BND2,2-Dichloropropane ug/L 12/20/2412/20/241.0 EPA 8260D/5030BND2-Chlorotoluene ug/L J-LOW-C12/20/2412/20/242.0 EPA 8260D/5030BND2-Nitropropane ug/L 12/20/2412/20/241.0 EPA 8260D/5030BND4-Chlorotoluene ug/L 12/20/2412/20/2420.0 EPA 8260D/5030BNDAcetone ug/L 12/20/2412/20/245.0 EPA 8260D/5030BNDAcrylonitrile ug/L 12/20/2412/20/240.4 EPA 8260D/5030BNDBenzene ug/L 12/20/2412/20/241.0 EPA 8260D/5030BNDBromobenzene ug/L 12/20/2412/20/241.0 EPA 8260D/5030BNDBromochloromethane ug/L 12/20/2412/20/241.0 EPA 8260D/5030BNDBromodichloromethane ug/L 12/20/2412/20/241.0 EPA 8260D/5030BNDBromoform ug/L 12/20/2412/20/242.0 EPA 8260D/5030BNDBromomethane Project Name: 23501- Maverik (Chevron), 1350 E 700 S, Clearfield CtF WO#: 24L1007 www.ChemtechFord.com Page 20 of 66Page 20 of 67 xx Chemtech-Ford Laboratories Serving the Intermountain West Since 1953 Certificate of Analysis 9632 South 500 West Sandy, UT 84070 O:(801) 262-7299 F: (866) 792-0093 www.ChemtechFord.com CMT Technical Services, Inc. Michael Sauerwein 2800 South Redwood Road West Valley City, UT 84119-2375 PO#: Receipt: Date Reported: Project Name: 12/11/24 17:10 @ 4.9 °C 12/26/2024 23501- Maverik (Chevron), 1350 E 700 S, Clearfield - Limited Phase II ESA Sample ID: B-7-W (cont.) Lab ID: 24L1007-07Matrix: Water Flag(s)Units Analysis Date/Time Date Sampled: 12/11/24 10:25 Preparation Date/Time Sampled By: Michael Sauerwein Minimum Reporting Limit MethodResult Volatile Organic Compounds (cont.) ug/L 12/20/2412/20/242.0 EPA 8260D/5030BNDCarbon Disulfide ug/L 12/20/2412/20/241.0 EPA 8260D/5030BNDCarbon Tetrachloride ug/L 12/20/2412/20/241.0 EPA 8260D/5030BNDChlorobenzene ug/L 12/20/2412/20/241.0 EPA 8260D/5030BNDChloroethane ug/L 12/20/2412/20/241.0 EPA 8260D/5030BNDChloroform ug/L 12/20/2412/20/241.0 EPA 8260D/5030BNDChloromethane ug/L 12/20/2412/20/241.0 EPA 8260D/5030BNDcis-1,2-Dichloroethene ug/L 12/20/2412/20/241.0 EPA 8260D/5030BNDcis-1,3-Dichloropropene ug/L J-LOW-L12/20/2412/20/2410.0 EPA 8260D/5030BNDCyclohexanone ug/L 12/20/2412/20/241.0 EPA 8260D/5030BNDDibromochloromethane ug/L 12/20/2412/20/241.0 EPA 8260D/5030BNDDibromomethane ug/L 12/20/2412/20/241.0 EPA 8260D/5030BNDDichlorodifluoromethane ug/L 12/20/2412/20/242.0 EPA 8260D/5030BNDEthyl Acetate ug/L 12/20/2412/20/241.0 EPA 8260D/5030B4.3Ethylbenzene ug/L 12/20/2412/20/241.0 EPA 8260D/5030BNDEthyl Ether ug/L J-LOW-L12/20/2412/20/241.0 EPA 8260D/5030BNDHexachlorobutadiene ug/L 12/20/2412/20/2420.0 EPA 8260D/5030BNDIsobutanol ug/L 12/20/2412/20/241.0 EPA 8260D/5030BNDIsopropylbenzene ug/L 12/20/2412/20/242.0 EPA 8260D/5030BNDMethyl Ethyl Ketone ug/L J-LOW-C12/20/2412/20/245.0 EPA 8260D/5030BNDMethyl Isobutyl Ketone ug/L 12/20/2412/20/241.0 EPA 8260D/5030BNDMethylene Chloride ug/L 12/20/2412/20/240.6 EPA 8260D/5030BNDMethyl-tert-butyl ether (MTBE) ug/L 12/20/2412/20/241.0 EPA 8260D/5030B3.8Naphthalene ug/L J-LOW-C12/20/2412/20/2450.0 EPA 8260D/5030BNDn-Butyl Alcohol ug/L 12/20/2412/20/241.0 EPA 8260D/5030BNDn-Butylbenzene ug/L 12/20/2412/20/241.0 EPA 8260D/5030BNDn-Propyl Benzene ug/L 12/20/2412/20/241.0 EPA 8260D/5030BNDPentachloroethane ug/L 12/20/2412/20/241.0 EPA 8260D/5030BNDp-Isopropyltoluene ug/L 12/20/2412/20/241.0 EPA 8260D/5030BNDsec-Butyl Benzene ug/L 12/20/2412/20/241.0 EPA 8260D/5030BNDStyrene ug/L 12/20/2412/20/241.0 EPA 8260D/5030BNDtert-Butylbenzene ug/L 12/20/2412/20/241.0 EPA 8260D/5030BNDTetrachloroethene ug/L 12/20/2412/20/241.0 EPA 8260D/5030B2.1Toluene ug/L 12/20/2412/20/241.0 EPA 8260D/5030BNDtrans-1,2-Dichloroethene ug/L 12/20/2412/20/241.0 EPA 8260D/5030BNDtrans-1,3-Dichloropropene ug/L 12/20/2412/20/241.0 EPA 8260D/5030BNDTrichloroethene Project Name: 23501- Maverik (Chevron), 1350 E 700 S, Clearfield CtF WO#: 24L1007 www.ChemtechFord.com Page 21 of 66Page 21 of 67 xx Chemtech-Ford Laboratories Serving the Intermountain West Since 1953 Certificate of Analysis 9632 South 500 West Sandy, UT 84070 O:(801) 262-7299 F: (866) 792-0093 www.ChemtechFord.com CMT Technical Services, Inc. Michael Sauerwein 2800 South Redwood Road West Valley City, UT 84119-2375 PO#: Receipt: Date Reported: Project Name: 12/11/24 17:10 @ 4.9 °C 12/26/2024 23501- Maverik (Chevron), 1350 E 700 S, Clearfield - Limited Phase II ESA Sample ID: B-7-W (cont.) Lab ID: 24L1007-07Matrix: Water Flag(s)Units Analysis Date/Time Date Sampled: 12/11/24 10:25 Preparation Date/Time Sampled By: Michael Sauerwein Minimum Reporting Limit MethodResult Volatile Organic Compounds (cont.) ug/L 12/20/2412/20/241.0 EPA 8260D/5030BNDTrichlorofluoromethane ug/L 12/20/2412/20/240.8 EPA 8260D/5030BNDVinyl Chloride ug/L 12/20/2412/20/243.0 EPA 8260D/5030B39.8Xylenes, total ug/L 12/20/2412/20/2410.0 EPA 8260D/5030B168Gasoline Range Organics Project Name: 23501- Maverik (Chevron), 1350 E 700 S, Clearfield CtF WO#: 24L1007 www.ChemtechFord.com Page 22 of 66Page 22 of 67 xx Chemtech-Ford Laboratories Serving the Intermountain West Since 1953 Certificate of Analysis 9632 South 500 West Sandy, UT 84070 O:(801) 262-7299 F: (866) 792-0093 www.ChemtechFord.com CMT Technical Services, Inc. Michael Sauerwein 2800 South Redwood Road West Valley City, UT 84119-2375 PO#: Receipt: Date Reported: Project Name: 12/11/24 17:10 @ 4.9 °C 12/26/2024 23501- Maverik (Chevron), 1350 E 700 S, Clearfield - Limited Phase II ESA Sample ID: B-8-W Lab ID: 24L1007-08Matrix: Water Flag(s)Units Analysis Date/Time Date Sampled: 12/11/24 11:20 Preparation Date/Time Sampled By: Michael Sauerwein Minimum Reporting Limit MethodResult Diesel Range mg/L 12/18/2412/16/241.0 EPA 8015 CNDDiesel Range Organics Volatile Organic Compounds ug/L 12/20/2412/20/241.0 EPA 8260D/5030BND1,1,1,2-Tetrachloroethane ug/L 12/20/2412/20/241.0 EPA 8260D/5030BND1,1,1-Trichloroethane ug/L 12/20/2412/20/241.0 EPA 8260D/5030BND1,1,2,2-Tetrachloroethane ug/L 12/20/2412/20/241.0 EPA 8260D/5030BND1,1,2-Trichloroethane ug/L J-LOW-L12/20/2412/20/241.0 EPA 8260D/5030BND1,1,2-Trichlorotrifluoroethane ug/L 12/20/2412/20/241.0 EPA 8260D/5030BND1,1-Dichloroethane ug/L 12/20/2412/20/241.0 EPA 8260D/5030BND1,1-Dichloroethene ug/L 12/20/2412/20/241.0 EPA 8260D/5030BND1,1-Dichloropropene ug/L J-LOW-C12/20/2412/20/2410.0 EPA 8260D/5030BND2-Hexanone ug/L J-LOW-L12/20/2412/20/241.0 EPA 8260D/5030BND1,2,3-Trichlorobenzene ug/L 12/20/2412/20/241.0 EPA 8260D/5030BND1,2,3-Trichloropropane ug/L 12/20/2412/20/241.0 EPA 8260D/5030BND1,2,4-Trichlorobenzene ug/L 12/20/2412/20/241.0 EPA 8260D/5030BND1,2,4-Trimethylbenzene ug/L 12/20/2412/20/241.0 EPA 8260D/5030BND1,2-Dibromo-3-chloropropane ug/L 12/20/2412/20/241.0 EPA 8260D/5030BND1,2-Dibromoethane (EDB) ug/L 12/20/2412/20/241.0 EPA 8260D/5030BND1,2-Dichlorobenzene ug/L 12/20/2412/20/241.0 EPA 8260D/5030BND1,2-Dichloroethane ug/L 12/20/2412/20/241.0 EPA 8260D/5030BND1,2-Dichloropropane ug/L 12/20/2412/20/241.0 EPA 8260D/5030BND1,3,5-Trimethylbenzene ug/L 12/20/2412/20/241.0 EPA 8260D/5030BND1,3-Dichlorobenzene ug/L 12/20/2412/20/241.0 EPA 8260D/5030BND1,3-Dichloropropane ug/L 12/20/2412/20/241.0 EPA 8260D/5030BND1,4-Dichlorobenzene ug/L 12/20/2412/20/241.0 EPA 8260D/5030BND2,2-Dichloropropane ug/L 12/20/2412/20/241.0 EPA 8260D/5030BND2-Chlorotoluene ug/L J-LOW-C12/20/2412/20/242.0 EPA 8260D/5030BND2-Nitropropane ug/L 12/20/2412/20/241.0 EPA 8260D/5030BND4-Chlorotoluene ug/L 12/20/2412/20/2420.0 EPA 8260D/5030BNDAcetone ug/L 12/20/2412/20/245.0 EPA 8260D/5030BNDAcrylonitrile ug/L 12/20/2412/20/240.4 EPA 8260D/5030BNDBenzene ug/L 12/20/2412/20/241.0 EPA 8260D/5030BNDBromobenzene ug/L 12/20/2412/20/241.0 EPA 8260D/5030BNDBromochloromethane ug/L 12/20/2412/20/241.0 EPA 8260D/5030BNDBromodichloromethane ug/L 12/20/2412/20/241.0 EPA 8260D/5030BNDBromoform ug/L 12/20/2412/20/242.0 EPA 8260D/5030BNDBromomethane Project Name: 23501- Maverik (Chevron), 1350 E 700 S, Clearfield CtF WO#: 24L1007 www.ChemtechFord.com Page 23 of 66Page 23 of 67 xx Chemtech-Ford Laboratories Serving the Intermountain West Since 1953 Certificate of Analysis 9632 South 500 West Sandy, UT 84070 O:(801) 262-7299 F: (866) 792-0093 www.ChemtechFord.com CMT Technical Services, Inc. Michael Sauerwein 2800 South Redwood Road West Valley City, UT 84119-2375 PO#: Receipt: Date Reported: Project Name: 12/11/24 17:10 @ 4.9 °C 12/26/2024 23501- Maverik (Chevron), 1350 E 700 S, Clearfield - Limited Phase II ESA Sample ID: B-8-W (cont.) Lab ID: 24L1007-08Matrix: Water Flag(s)Units Analysis Date/Time Date Sampled: 12/11/24 11:20 Preparation Date/Time Sampled By: Michael Sauerwein Minimum Reporting Limit MethodResult Volatile Organic Compounds (cont.) ug/L 12/20/2412/20/242.0 EPA 8260D/5030BNDCarbon Disulfide ug/L 12/20/2412/20/241.0 EPA 8260D/5030BNDCarbon Tetrachloride ug/L 12/20/2412/20/241.0 EPA 8260D/5030BNDChlorobenzene ug/L 12/20/2412/20/241.0 EPA 8260D/5030BNDChloroethane ug/L 12/20/2412/20/241.0 EPA 8260D/5030BNDChloroform ug/L 12/20/2412/20/241.0 EPA 8260D/5030BNDChloromethane ug/L 12/20/2412/20/241.0 EPA 8260D/5030BNDcis-1,2-Dichloroethene ug/L 12/20/2412/20/241.0 EPA 8260D/5030BNDcis-1,3-Dichloropropene ug/L J-LOW-L12/20/2412/20/2410.0 EPA 8260D/5030BNDCyclohexanone ug/L 12/20/2412/20/241.0 EPA 8260D/5030BNDDibromochloromethane ug/L 12/20/2412/20/241.0 EPA 8260D/5030BNDDibromomethane ug/L 12/20/2412/20/241.0 EPA 8260D/5030BNDDichlorodifluoromethane ug/L 12/20/2412/20/242.0 EPA 8260D/5030BNDEthyl Acetate ug/L 12/20/2412/20/241.0 EPA 8260D/5030BNDEthylbenzene ug/L 12/20/2412/20/241.0 EPA 8260D/5030BNDEthyl Ether ug/L J-LOW-L12/20/2412/20/241.0 EPA 8260D/5030BNDHexachlorobutadiene ug/L 12/20/2412/20/2420.0 EPA 8260D/5030BNDIsobutanol ug/L 12/20/2412/20/241.0 EPA 8260D/5030BNDIsopropylbenzene ug/L 12/20/2412/20/242.0 EPA 8260D/5030BNDMethyl Ethyl Ketone ug/L J-LOW-C12/20/2412/20/245.0 EPA 8260D/5030BNDMethyl Isobutyl Ketone ug/L 12/20/2412/20/241.0 EPA 8260D/5030BNDMethylene Chloride ug/L 12/20/2412/20/240.6 EPA 8260D/5030BNDMethyl-tert-butyl ether (MTBE) ug/L 12/20/2412/20/241.0 EPA 8260D/5030BNDNaphthalene ug/L J-LOW-C12/20/2412/20/2450.0 EPA 8260D/5030BNDn-Butyl Alcohol ug/L 12/20/2412/20/241.0 EPA 8260D/5030BNDn-Butylbenzene ug/L 12/20/2412/20/241.0 EPA 8260D/5030BNDn-Propyl Benzene ug/L 12/20/2412/20/241.0 EPA 8260D/5030BNDPentachloroethane ug/L 12/20/2412/20/241.0 EPA 8260D/5030BNDp-Isopropyltoluene ug/L 12/20/2412/20/241.0 EPA 8260D/5030BNDsec-Butyl Benzene ug/L 12/20/2412/20/241.0 EPA 8260D/5030BNDStyrene ug/L 12/20/2412/20/241.0 EPA 8260D/5030BNDtert-Butylbenzene ug/L 12/20/2412/20/241.0 EPA 8260D/5030BNDTetrachloroethene ug/L 12/20/2412/20/241.0 EPA 8260D/5030BNDToluene ug/L 12/20/2412/20/241.0 EPA 8260D/5030BNDtrans-1,2-Dichloroethene ug/L 12/20/2412/20/241.0 EPA 8260D/5030BNDtrans-1,3-Dichloropropene ug/L 12/20/2412/20/241.0 EPA 8260D/5030BNDTrichloroethene Project Name: 23501- Maverik (Chevron), 1350 E 700 S, Clearfield CtF WO#: 24L1007 www.ChemtechFord.com Page 24 of 66Page 24 of 67 xx Chemtech-Ford Laboratories Serving the Intermountain West Since 1953 Certificate of Analysis 9632 South 500 West Sandy, UT 84070 O:(801) 262-7299 F: (866) 792-0093 www.ChemtechFord.com CMT Technical Services, Inc. Michael Sauerwein 2800 South Redwood Road West Valley City, UT 84119-2375 PO#: Receipt: Date Reported: Project Name: 12/11/24 17:10 @ 4.9 °C 12/26/2024 23501- Maverik (Chevron), 1350 E 700 S, Clearfield - Limited Phase II ESA Sample ID: B-8-W (cont.) Lab ID: 24L1007-08Matrix: Water Flag(s)Units Analysis Date/Time Date Sampled: 12/11/24 11:20 Preparation Date/Time Sampled By: Michael Sauerwein Minimum Reporting Limit MethodResult Volatile Organic Compounds (cont.) ug/L 12/20/2412/20/241.0 EPA 8260D/5030BNDTrichlorofluoromethane ug/L 12/20/2412/20/240.8 EPA 8260D/5030BNDVinyl Chloride ug/L 12/20/2412/20/243.0 EPA 8260D/5030BNDXylenes, total ug/L 12/20/2412/20/2410.0 EPA 8260D/5030BNDGasoline Range Organics Project Name: 23501- Maverik (Chevron), 1350 E 700 S, Clearfield CtF WO#: 24L1007 www.ChemtechFord.com Page 25 of 66Page 25 of 67 xx Chemtech-Ford Laboratories Serving the Intermountain West Since 1953 Certificate of Analysis 9632 South 500 West Sandy, UT 84070 O:(801) 262-7299 F: (866) 792-0093 www.ChemtechFord.com CMT Technical Services, Inc. Michael Sauerwein 2800 South Redwood Road West Valley City, UT 84119-2375 PO#: Receipt: Date Reported: Project Name: 12/11/24 17:10 @ 4.9 °C 12/26/2024 23501- Maverik (Chevron), 1350 E 700 S, Clearfield - Limited Phase II ESA Sample ID: B-9-W Lab ID: 24L1007-09Matrix: Water Flag(s)Units Analysis Date/Time Date Sampled: 12/11/24 12:15 Preparation Date/Time Sampled By: Michael Sauerwein Minimum Reporting Limit MethodResult Diesel Range mg/L 12/18/2412/16/241.0 EPA 8015 CNDDiesel Range Organics Volatile Organic Compounds ug/L 12/20/2412/20/241.0 EPA 8260D/5030BND1,1,1,2-Tetrachloroethane ug/L 12/20/2412/20/241.0 EPA 8260D/5030BND1,1,1-Trichloroethane ug/L 12/20/2412/20/241.0 EPA 8260D/5030BND1,1,2,2-Tetrachloroethane ug/L 12/20/2412/20/241.0 EPA 8260D/5030BND1,1,2-Trichloroethane ug/L J-LOW-L12/20/2412/20/241.0 EPA 8260D/5030BND1,1,2-Trichlorotrifluoroethane ug/L 12/20/2412/20/241.0 EPA 8260D/5030BND1,1-Dichloroethane ug/L 12/20/2412/20/241.0 EPA 8260D/5030BND1,1-Dichloroethene ug/L 12/20/2412/20/241.0 EPA 8260D/5030BND1,1-Dichloropropene ug/L J-LOW-C12/20/2412/20/2410.0 EPA 8260D/5030BND2-Hexanone ug/L J-LOW-L12/20/2412/20/241.0 EPA 8260D/5030BND1,2,3-Trichlorobenzene ug/L 12/20/2412/20/241.0 EPA 8260D/5030BND1,2,3-Trichloropropane ug/L 12/20/2412/20/241.0 EPA 8260D/5030BND1,2,4-Trichlorobenzene ug/L 12/20/2412/20/241.0 EPA 8260D/5030BND1,2,4-Trimethylbenzene ug/L 12/20/2412/20/241.0 EPA 8260D/5030BND1,2-Dibromo-3-chloropropane ug/L 12/20/2412/20/241.0 EPA 8260D/5030BND1,2-Dibromoethane (EDB) ug/L 12/20/2412/20/241.0 EPA 8260D/5030BND1,2-Dichlorobenzene ug/L 12/20/2412/20/241.0 EPA 8260D/5030BND1,2-Dichloroethane ug/L 12/20/2412/20/241.0 EPA 8260D/5030BND1,2-Dichloropropane ug/L 12/20/2412/20/241.0 EPA 8260D/5030BND1,3,5-Trimethylbenzene ug/L 12/20/2412/20/241.0 EPA 8260D/5030BND1,3-Dichlorobenzene ug/L 12/20/2412/20/241.0 EPA 8260D/5030BND1,3-Dichloropropane ug/L 12/20/2412/20/241.0 EPA 8260D/5030BND1,4-Dichlorobenzene ug/L 12/20/2412/20/241.0 EPA 8260D/5030BND2,2-Dichloropropane ug/L 12/20/2412/20/241.0 EPA 8260D/5030BND2-Chlorotoluene ug/L J-LOW-C12/20/2412/20/242.0 EPA 8260D/5030BND2-Nitropropane ug/L 12/20/2412/20/241.0 EPA 8260D/5030BND4-Chlorotoluene ug/L 12/20/2412/20/2420.0 EPA 8260D/5030BNDAcetone ug/L 12/20/2412/20/245.0 EPA 8260D/5030BNDAcrylonitrile ug/L 12/20/2412/20/240.4 EPA 8260D/5030BNDBenzene ug/L 12/20/2412/20/241.0 EPA 8260D/5030BNDBromobenzene ug/L 12/20/2412/20/241.0 EPA 8260D/5030BNDBromochloromethane ug/L 12/20/2412/20/241.0 EPA 8260D/5030BNDBromodichloromethane ug/L 12/20/2412/20/241.0 EPA 8260D/5030BNDBromoform ug/L 12/20/2412/20/242.0 EPA 8260D/5030BNDBromomethane Project Name: 23501- Maverik (Chevron), 1350 E 700 S, Clearfield CtF WO#: 24L1007 www.ChemtechFord.com Page 26 of 66Page 26 of 67 xx Chemtech-Ford Laboratories Serving the Intermountain West Since 1953 Certificate of Analysis 9632 South 500 West Sandy, UT 84070 O:(801) 262-7299 F: (866) 792-0093 www.ChemtechFord.com CMT Technical Services, Inc. Michael Sauerwein 2800 South Redwood Road West Valley City, UT 84119-2375 PO#: Receipt: Date Reported: Project Name: 12/11/24 17:10 @ 4.9 °C 12/26/2024 23501- Maverik (Chevron), 1350 E 700 S, Clearfield - Limited Phase II ESA Sample ID: B-9-W (cont.) Lab ID: 24L1007-09Matrix: Water Flag(s)Units Analysis Date/Time Date Sampled: 12/11/24 12:15 Preparation Date/Time Sampled By: Michael Sauerwein Minimum Reporting Limit MethodResult Volatile Organic Compounds (cont.) ug/L 12/20/2412/20/242.0 EPA 8260D/5030BNDCarbon Disulfide ug/L 12/20/2412/20/241.0 EPA 8260D/5030BNDCarbon Tetrachloride ug/L 12/20/2412/20/241.0 EPA 8260D/5030BNDChlorobenzene ug/L 12/20/2412/20/241.0 EPA 8260D/5030BNDChloroethane ug/L 12/20/2412/20/241.0 EPA 8260D/5030BNDChloroform ug/L 12/20/2412/20/241.0 EPA 8260D/5030BNDChloromethane ug/L 12/20/2412/20/241.0 EPA 8260D/5030BNDcis-1,2-Dichloroethene ug/L 12/20/2412/20/241.0 EPA 8260D/5030BNDcis-1,3-Dichloropropene ug/L J-LOW-L12/20/2412/20/2410.0 EPA 8260D/5030BNDCyclohexanone ug/L 12/20/2412/20/241.0 EPA 8260D/5030BNDDibromochloromethane ug/L 12/20/2412/20/241.0 EPA 8260D/5030BNDDibromomethane ug/L 12/20/2412/20/241.0 EPA 8260D/5030BNDDichlorodifluoromethane ug/L 12/20/2412/20/242.0 EPA 8260D/5030BNDEthyl Acetate ug/L 12/20/2412/20/241.0 EPA 8260D/5030BNDEthylbenzene ug/L 12/20/2412/20/241.0 EPA 8260D/5030BNDEthyl Ether ug/L J-LOW-L12/20/2412/20/241.0 EPA 8260D/5030BNDHexachlorobutadiene ug/L 12/20/2412/20/2420.0 EPA 8260D/5030BNDIsobutanol ug/L 12/20/2412/20/241.0 EPA 8260D/5030BNDIsopropylbenzene ug/L 12/20/2412/20/242.0 EPA 8260D/5030BNDMethyl Ethyl Ketone ug/L J-LOW-C12/20/2412/20/245.0 EPA 8260D/5030BNDMethyl Isobutyl Ketone ug/L 12/20/2412/20/241.0 EPA 8260D/5030BNDMethylene Chloride ug/L 12/20/2412/20/240.6 EPA 8260D/5030BNDMethyl-tert-butyl ether (MTBE) ug/L 12/20/2412/20/241.0 EPA 8260D/5030BNDNaphthalene ug/L J-LOW-C12/20/2412/20/2450.0 EPA 8260D/5030BNDn-Butyl Alcohol ug/L 12/20/2412/20/241.0 EPA 8260D/5030BNDn-Butylbenzene ug/L 12/20/2412/20/241.0 EPA 8260D/5030BNDn-Propyl Benzene ug/L 12/20/2412/20/241.0 EPA 8260D/5030BNDPentachloroethane ug/L 12/20/2412/20/241.0 EPA 8260D/5030BNDp-Isopropyltoluene ug/L 12/20/2412/20/241.0 EPA 8260D/5030BNDsec-Butyl Benzene ug/L 12/20/2412/20/241.0 EPA 8260D/5030BNDStyrene ug/L 12/20/2412/20/241.0 EPA 8260D/5030BNDtert-Butylbenzene ug/L 12/20/2412/20/241.0 EPA 8260D/5030BNDTetrachloroethene ug/L 12/20/2412/20/241.0 EPA 8260D/5030BNDToluene ug/L 12/20/2412/20/241.0 EPA 8260D/5030BNDtrans-1,2-Dichloroethene ug/L 12/20/2412/20/241.0 EPA 8260D/5030BNDtrans-1,3-Dichloropropene ug/L 12/20/2412/20/241.0 EPA 8260D/5030BNDTrichloroethene Project Name: 23501- Maverik (Chevron), 1350 E 700 S, Clearfield CtF WO#: 24L1007 www.ChemtechFord.com Page 27 of 66Page 27 of 67 xx Chemtech-Ford Laboratories Serving the Intermountain West Since 1953 Certificate of Analysis 9632 South 500 West Sandy, UT 84070 O:(801) 262-7299 F: (866) 792-0093 www.ChemtechFord.com CMT Technical Services, Inc. Michael Sauerwein 2800 South Redwood Road West Valley City, UT 84119-2375 PO#: Receipt: Date Reported: Project Name: 12/11/24 17:10 @ 4.9 °C 12/26/2024 23501- Maverik (Chevron), 1350 E 700 S, Clearfield - Limited Phase II ESA Sample ID: B-9-W (cont.) Lab ID: 24L1007-09Matrix: Water Flag(s)Units Analysis Date/Time Date Sampled: 12/11/24 12:15 Preparation Date/Time Sampled By: Michael Sauerwein Minimum Reporting Limit MethodResult Volatile Organic Compounds (cont.) ug/L 12/20/2412/20/241.0 EPA 8260D/5030BNDTrichlorofluoromethane ug/L 12/20/2412/20/240.8 EPA 8260D/5030BNDVinyl Chloride ug/L 12/20/2412/20/243.0 EPA 8260D/5030BNDXylenes, total ug/L 12/20/2412/20/2410.0 EPA 8260D/5030B34.9Gasoline Range Organics Project Name: 23501- Maverik (Chevron), 1350 E 700 S, Clearfield CtF WO#: 24L1007 www.ChemtechFord.com Page 28 of 66Page 28 of 67 xx Chemtech-Ford Laboratories Serving the Intermountain West Since 1953 Certificate of Analysis 9632 South 500 West Sandy, UT 84070 O:(801) 262-7299 F: (866) 792-0093 www.ChemtechFord.com CMT Technical Services, Inc. Michael Sauerwein 2800 South Redwood Road West Valley City, UT 84119-2375 PO#: Receipt: Date Reported: Project Name: 12/11/24 17:10 @ 4.9 °C 12/26/2024 23501- Maverik (Chevron), 1350 E 700 S, Clearfield - Limited Phase II ESA Sample ID: B-10-W Lab ID: 24L1007-10Matrix: Water Flag(s)Units Analysis Date/Time Date Sampled: 12/11/24 13:00 Preparation Date/Time Sampled By: Michael Sauerwein Minimum Reporting Limit MethodResult Diesel Range mg/L 12/18/2412/16/241.0 EPA 8015 CNDDiesel Range Organics Volatile Organic Compounds ug/L 12/23/2412/23/241.0 EPA 8260D/5030BND1,1,1,2-Tetrachloroethane ug/L 12/23/2412/23/241.0 EPA 8260D/5030BND1,1,1-Trichloroethane ug/L 12/23/2412/23/241.0 EPA 8260D/5030BND1,1,2,2-Tetrachloroethane ug/L 12/23/2412/23/241.0 EPA 8260D/5030BND1,1,2-Trichloroethane ug/L J-LOW-L12/23/2412/23/241.0 EPA 8260D/5030BND1,1,2-Trichlorotrifluoroethane ug/L 12/23/2412/23/241.0 EPA 8260D/5030BND1,1-Dichloroethane ug/L 12/23/2412/23/241.0 EPA 8260D/5030BND1,1-Dichloroethene ug/L J-LOW-L12/23/2412/23/241.0 EPA 8260D/5030BND1,1-Dichloropropene ug/L J-LOW-C12/23/2412/23/2410.0 EPA 8260D/5030BND2-Hexanone ug/L 12/23/2412/23/241.0 EPA 8260D/5030BND1,2,3-Trichlorobenzene ug/L 12/23/2412/23/241.0 EPA 8260D/5030BND1,2,3-Trichloropropane ug/L 12/23/2412/23/241.0 EPA 8260D/5030BND1,2,4-Trichlorobenzene ug/L 12/23/2412/23/241.0 EPA 8260D/5030BND1,2,4-Trimethylbenzene ug/L 12/23/2412/23/241.0 EPA 8260D/5030BND1,2-Dibromo-3-chloropropane ug/L 12/23/2412/23/241.0 EPA 8260D/5030BND1,2-Dibromoethane (EDB) ug/L 12/23/2412/23/241.0 EPA 8260D/5030BND1,2-Dichlorobenzene ug/L 12/23/2412/23/241.0 EPA 8260D/5030BND1,2-Dichloroethane ug/L 12/23/2412/23/241.0 EPA 8260D/5030BND1,2-Dichloropropane ug/L 12/23/2412/23/241.0 EPA 8260D/5030BND1,3,5-Trimethylbenzene ug/L 12/23/2412/23/241.0 EPA 8260D/5030BND1,3-Dichlorobenzene ug/L 12/23/2412/23/241.0 EPA 8260D/5030BND1,3-Dichloropropane ug/L 12/23/2412/23/241.0 EPA 8260D/5030BND1,4-Dichlorobenzene ug/L 12/23/2412/23/241.0 EPA 8260D/5030BND2,2-Dichloropropane ug/L 12/23/2412/23/241.0 EPA 8260D/5030BND2-Chlorotoluene ug/L J-LOW-C12/23/2412/23/242.0 EPA 8260D/5030BND2-Nitropropane ug/L 12/23/2412/23/241.0 EPA 8260D/5030BND4-Chlorotoluene ug/L 12/23/2412/23/2420.0 EPA 8260D/5030BNDAcetone ug/L 12/23/2412/23/245.0 EPA 8260D/5030BNDAcrylonitrile ug/L 12/23/2412/23/240.4 EPA 8260D/5030BNDBenzene ug/L 12/23/2412/23/241.0 EPA 8260D/5030BNDBromobenzene ug/L 12/23/2412/23/241.0 EPA 8260D/5030BNDBromochloromethane ug/L 12/23/2412/23/241.0 EPA 8260D/5030BNDBromodichloromethane ug/L 12/23/2412/23/241.0 EPA 8260D/5030BNDBromoform ug/L J-LOW-C12/23/2412/23/242.0 EPA 8260D/5030BNDBromomethane Project Name: 23501- Maverik (Chevron), 1350 E 700 S, Clearfield CtF WO#: 24L1007 www.ChemtechFord.com Page 29 of 66Page 29 of 67 xx Chemtech-Ford Laboratories Serving the Intermountain West Since 1953 Certificate of Analysis 9632 South 500 West Sandy, UT 84070 O:(801) 262-7299 F: (866) 792-0093 www.ChemtechFord.com CMT Technical Services, Inc. Michael Sauerwein 2800 South Redwood Road West Valley City, UT 84119-2375 PO#: Receipt: Date Reported: Project Name: 12/11/24 17:10 @ 4.9 °C 12/26/2024 23501- Maverik (Chevron), 1350 E 700 S, Clearfield - Limited Phase II ESA Sample ID: B-10-W (cont.) Lab ID: 24L1007-10Matrix: Water Flag(s)Units Analysis Date/Time Date Sampled: 12/11/24 13:00 Preparation Date/Time Sampled By: Michael Sauerwein Minimum Reporting Limit MethodResult Volatile Organic Compounds (cont.) ug/L 12/23/2412/23/242.0 EPA 8260D/5030BNDCarbon Disulfide ug/L J-LOW-L12/23/2412/23/241.0 EPA 8260D/5030BNDCarbon Tetrachloride ug/L 12/23/2412/23/241.0 EPA 8260D/5030BNDChlorobenzene ug/L 12/23/2412/23/241.0 EPA 8260D/5030BNDChloroethane ug/L 12/23/2412/23/241.0 EPA 8260D/5030BNDChloroform ug/L J-LOW-L12/23/2412/23/241.0 EPA 8260D/5030BNDChloromethane ug/L 12/23/2412/23/241.0 EPA 8260D/5030BNDcis-1,2-Dichloroethene ug/L 12/23/2412/23/241.0 EPA 8260D/5030BNDcis-1,3-Dichloropropene ug/L J-LOW-C12/23/2412/23/2410.0 EPA 8260D/5030BNDCyclohexanone ug/L 12/23/2412/23/241.0 EPA 8260D/5030BNDDibromochloromethane ug/L 12/23/2412/23/241.0 EPA 8260D/5030BNDDibromomethane ug/L J-LOW-L12/23/2412/23/241.0 EPA 8260D/5030BNDDichlorodifluoromethane ug/L 12/23/2412/23/242.0 EPA 8260D/5030BNDEthyl Acetate ug/L 12/23/2412/23/241.0 EPA 8260D/5030BNDEthylbenzene ug/L 12/23/2412/23/241.0 EPA 8260D/5030BNDEthyl Ether ug/L J-LOW-L12/23/2412/23/241.0 EPA 8260D/5030BNDHexachlorobutadiene ug/L 12/23/2412/23/2420.0 EPA 8260D/5030BNDIsobutanol ug/L 12/23/2412/23/241.0 EPA 8260D/5030BNDIsopropylbenzene ug/L J-LOW-C12/23/2412/23/242.0 EPA 8260D/5030BNDMethyl Ethyl Ketone ug/L 12/23/2412/23/245.0 EPA 8260D/5030BNDMethyl Isobutyl Ketone ug/L 12/23/2412/23/241.0 EPA 8260D/5030BNDMethylene Chloride ug/L 12/23/2412/23/240.6 EPA 8260D/5030BNDMethyl-tert-butyl ether (MTBE) ug/L 12/23/2412/23/241.0 EPA 8260D/5030BNDNaphthalene ug/L J-LOW-C12/23/2412/23/2450.0 EPA 8260D/5030BNDn-Butyl Alcohol ug/L 12/23/2412/23/241.0 EPA 8260D/5030BNDn-Butylbenzene ug/L 12/23/2412/23/241.0 EPA 8260D/5030BNDn-Propyl Benzene ug/L J-LOW-L12/23/2412/23/241.0 EPA 8260D/5030BNDPentachloroethane ug/L 12/23/2412/23/241.0 EPA 8260D/5030BNDp-Isopropyltoluene ug/L 12/23/2412/23/241.0 EPA 8260D/5030BNDsec-Butyl Benzene ug/L 12/23/2412/23/241.0 EPA 8260D/5030BNDStyrene ug/L 12/23/2412/23/241.0 EPA 8260D/5030BNDtert-Butylbenzene ug/L J-LOW-L12/23/2412/23/241.0 EPA 8260D/5030BNDTetrachloroethene ug/L 12/23/2412/23/241.0 EPA 8260D/5030BNDToluene ug/L J-LOW-L12/23/2412/23/241.0 EPA 8260D/5030BNDtrans-1,2-Dichloroethene ug/L J-LOW-L12/23/2412/23/241.0 EPA 8260D/5030BNDtrans-1,3-Dichloropropene ug/L 12/23/2412/23/241.0 EPA 8260D/5030BNDTrichloroethene Project Name: 23501- Maverik (Chevron), 1350 E 700 S, Clearfield CtF WO#: 24L1007 www.ChemtechFord.com Page 30 of 66Page 30 of 67 xx Chemtech-Ford Laboratories Serving the Intermountain West Since 1953 Certificate of Analysis 9632 South 500 West Sandy, UT 84070 O:(801) 262-7299 F: (866) 792-0093 www.ChemtechFord.com CMT Technical Services, Inc. Michael Sauerwein 2800 South Redwood Road West Valley City, UT 84119-2375 PO#: Receipt: Date Reported: Project Name: 12/11/24 17:10 @ 4.9 °C 12/26/2024 23501- Maverik (Chevron), 1350 E 700 S, Clearfield - Limited Phase II ESA Sample ID: B-10-W (cont.) Lab ID: 24L1007-10Matrix: Water Flag(s)Units Analysis Date/Time Date Sampled: 12/11/24 13:00 Preparation Date/Time Sampled By: Michael Sauerwein Minimum Reporting Limit MethodResult Volatile Organic Compounds (cont.) ug/L J-LOW-L12/23/2412/23/241.0 EPA 8260D/5030BNDTrichlorofluoromethane ug/L J-LOW-L12/23/2412/23/240.8 EPA 8260D/5030BNDVinyl Chloride ug/L 12/23/2412/23/243.0 EPA 8260D/5030BNDXylenes, total ug/L 12/23/2412/23/2410.0 EPA 8260D/5030BNDGasoline Range Organics Project Name: 23501- Maverik (Chevron), 1350 E 700 S, Clearfield CtF WO#: 24L1007 www.ChemtechFord.com Page 31 of 66Page 31 of 67 xx Chemtech-Ford Laboratories Serving the Intermountain West Since 1953 Certificate of Analysis 9632 South 500 West Sandy, UT 84070 O:(801) 262-7299 F: (866) 792-0093 www.ChemtechFord.com CMT Technical Services, Inc. Michael Sauerwein 2800 South Redwood Road West Valley City, UT 84119-2375 PO#: Receipt: Date Reported: Project Name: 12/11/24 17:10 @ 4.9 °C 12/26/2024 23501- Maverik (Chevron), 1350 E 700 S, Clearfield - Limited Phase II ESA Sample ID: B-11-W Lab ID: 24L1007-11Matrix: Water Flag(s)Units Analysis Date/Time Date Sampled: 12/11/24 13:05 Preparation Date/Time Sampled By: Michael Sauerwein Minimum Reporting Limit MethodResult Diesel Range mg/L 12/18/2412/16/241.0 EPA 8015 CNDDiesel Range Organics Volatile Organic Compounds ug/L 12/20/2412/20/241.0 EPA 8260D/5030BND1,1,1,2-Tetrachloroethane ug/L 12/20/2412/20/241.0 EPA 8260D/5030BND1,1,1-Trichloroethane ug/L 12/20/2412/20/241.0 EPA 8260D/5030BND1,1,2,2-Tetrachloroethane ug/L 12/20/2412/20/241.0 EPA 8260D/5030BND1,1,2-Trichloroethane ug/L J-LOW-L12/20/2412/20/241.0 EPA 8260D/5030BND1,1,2-Trichlorotrifluoroethane ug/L 12/20/2412/20/241.0 EPA 8260D/5030BND1,1-Dichloroethane ug/L 12/20/2412/20/241.0 EPA 8260D/5030BND1,1-Dichloroethene ug/L 12/20/2412/20/241.0 EPA 8260D/5030BND1,1-Dichloropropene ug/L J-LOW-C12/20/2412/20/2410.0 EPA 8260D/5030BND2-Hexanone ug/L J-LOW-L12/20/2412/20/241.0 EPA 8260D/5030BND1,2,3-Trichlorobenzene ug/L 12/20/2412/20/241.0 EPA 8260D/5030BND1,2,3-Trichloropropane ug/L 12/20/2412/20/241.0 EPA 8260D/5030BND1,2,4-Trichlorobenzene ug/L 12/20/2412/20/241.0 EPA 8260D/5030BND1,2,4-Trimethylbenzene ug/L 12/20/2412/20/241.0 EPA 8260D/5030BND1,2-Dibromo-3-chloropropane ug/L 12/20/2412/20/241.0 EPA 8260D/5030BND1,2-Dibromoethane (EDB) ug/L 12/20/2412/20/241.0 EPA 8260D/5030BND1,2-Dichlorobenzene ug/L 12/20/2412/20/241.0 EPA 8260D/5030BND1,2-Dichloroethane ug/L 12/20/2412/20/241.0 EPA 8260D/5030BND1,2-Dichloropropane ug/L 12/20/2412/20/241.0 EPA 8260D/5030BND1,3,5-Trimethylbenzene ug/L 12/20/2412/20/241.0 EPA 8260D/5030BND1,3-Dichlorobenzene ug/L 12/20/2412/20/241.0 EPA 8260D/5030BND1,3-Dichloropropane ug/L 12/20/2412/20/241.0 EPA 8260D/5030BND1,4-Dichlorobenzene ug/L 12/20/2412/20/241.0 EPA 8260D/5030BND2,2-Dichloropropane ug/L 12/20/2412/20/241.0 EPA 8260D/5030BND2-Chlorotoluene ug/L J-LOW-C12/20/2412/20/242.0 EPA 8260D/5030BND2-Nitropropane ug/L 12/20/2412/20/241.0 EPA 8260D/5030BND4-Chlorotoluene ug/L 12/20/2412/20/2420.0 EPA 8260D/5030BNDAcetone ug/L 12/20/2412/20/245.0 EPA 8260D/5030BNDAcrylonitrile ug/L 12/20/2412/20/240.4 EPA 8260D/5030BNDBenzene ug/L 12/20/2412/20/241.0 EPA 8260D/5030BNDBromobenzene ug/L 12/20/2412/20/241.0 EPA 8260D/5030BNDBromochloromethane ug/L 12/20/2412/20/241.0 EPA 8260D/5030BNDBromodichloromethane ug/L 12/20/2412/20/241.0 EPA 8260D/5030BNDBromoform ug/L 12/20/2412/20/242.0 EPA 8260D/5030BNDBromomethane Project Name: 23501- Maverik (Chevron), 1350 E 700 S, Clearfield CtF WO#: 24L1007 www.ChemtechFord.com Page 32 of 66Page 32 of 67 xx Chemtech-Ford Laboratories Serving the Intermountain West Since 1953 Certificate of Analysis 9632 South 500 West Sandy, UT 84070 O:(801) 262-7299 F: (866) 792-0093 www.ChemtechFord.com CMT Technical Services, Inc. Michael Sauerwein 2800 South Redwood Road West Valley City, UT 84119-2375 PO#: Receipt: Date Reported: Project Name: 12/11/24 17:10 @ 4.9 °C 12/26/2024 23501- Maverik (Chevron), 1350 E 700 S, Clearfield - Limited Phase II ESA Sample ID: B-11-W (cont.) Lab ID: 24L1007-11Matrix: Water Flag(s)Units Analysis Date/Time Date Sampled: 12/11/24 13:05 Preparation Date/Time Sampled By: Michael Sauerwein Minimum Reporting Limit MethodResult Volatile Organic Compounds (cont.) ug/L 12/20/2412/20/242.0 EPA 8260D/5030BNDCarbon Disulfide ug/L 12/20/2412/20/241.0 EPA 8260D/5030BNDCarbon Tetrachloride ug/L 12/20/2412/20/241.0 EPA 8260D/5030BNDChlorobenzene ug/L 12/20/2412/20/241.0 EPA 8260D/5030BNDChloroethane ug/L 12/20/2412/20/241.0 EPA 8260D/5030BNDChloroform ug/L 12/20/2412/20/241.0 EPA 8260D/5030BNDChloromethane ug/L 12/20/2412/20/241.0 EPA 8260D/5030BNDcis-1,2-Dichloroethene ug/L 12/20/2412/20/241.0 EPA 8260D/5030BNDcis-1,3-Dichloropropene ug/L J-LOW-L12/20/2412/20/2410.0 EPA 8260D/5030BNDCyclohexanone ug/L 12/20/2412/20/241.0 EPA 8260D/5030BNDDibromochloromethane ug/L 12/20/2412/20/241.0 EPA 8260D/5030BNDDibromomethane ug/L 12/20/2412/20/241.0 EPA 8260D/5030BNDDichlorodifluoromethane ug/L 12/20/2412/20/242.0 EPA 8260D/5030BNDEthyl Acetate ug/L 12/20/2412/20/241.0 EPA 8260D/5030BNDEthylbenzene ug/L 12/20/2412/20/241.0 EPA 8260D/5030BNDEthyl Ether ug/L J-LOW-L12/20/2412/20/241.0 EPA 8260D/5030BNDHexachlorobutadiene ug/L 12/20/2412/20/2420.0 EPA 8260D/5030BNDIsobutanol ug/L 12/20/2412/20/241.0 EPA 8260D/5030BNDIsopropylbenzene ug/L 12/20/2412/20/242.0 EPA 8260D/5030BNDMethyl Ethyl Ketone ug/L J-LOW-C12/20/2412/20/245.0 EPA 8260D/5030BNDMethyl Isobutyl Ketone ug/L 12/20/2412/20/241.0 EPA 8260D/5030BNDMethylene Chloride ug/L 12/20/2412/20/240.6 EPA 8260D/5030BNDMethyl-tert-butyl ether (MTBE) ug/L 12/20/2412/20/241.0 EPA 8260D/5030BNDNaphthalene ug/L J-LOW-C12/20/2412/20/2450.0 EPA 8260D/5030BNDn-Butyl Alcohol ug/L 12/20/2412/20/241.0 EPA 8260D/5030BNDn-Butylbenzene ug/L 12/20/2412/20/241.0 EPA 8260D/5030BNDn-Propyl Benzene ug/L 12/20/2412/20/241.0 EPA 8260D/5030BNDPentachloroethane ug/L 12/20/2412/20/241.0 EPA 8260D/5030BNDp-Isopropyltoluene ug/L 12/20/2412/20/241.0 EPA 8260D/5030BNDsec-Butyl Benzene ug/L 12/20/2412/20/241.0 EPA 8260D/5030BNDStyrene ug/L 12/20/2412/20/241.0 EPA 8260D/5030BNDtert-Butylbenzene ug/L 12/20/2412/20/241.0 EPA 8260D/5030BNDTetrachloroethene ug/L 12/20/2412/20/241.0 EPA 8260D/5030BNDToluene ug/L 12/20/2412/20/241.0 EPA 8260D/5030BNDtrans-1,2-Dichloroethene ug/L 12/20/2412/20/241.0 EPA 8260D/5030BNDtrans-1,3-Dichloropropene ug/L 12/20/2412/20/241.0 EPA 8260D/5030BNDTrichloroethene Project Name: 23501- Maverik (Chevron), 1350 E 700 S, Clearfield CtF WO#: 24L1007 www.ChemtechFord.com Page 33 of 66Page 33 of 67 xx Chemtech-Ford Laboratories Serving the Intermountain West Since 1953 Certificate of Analysis 9632 South 500 West Sandy, UT 84070 O:(801) 262-7299 F: (866) 792-0093 www.ChemtechFord.com CMT Technical Services, Inc. Michael Sauerwein 2800 South Redwood Road West Valley City, UT 84119-2375 PO#: Receipt: Date Reported: Project Name: 12/11/24 17:10 @ 4.9 °C 12/26/2024 23501- Maverik (Chevron), 1350 E 700 S, Clearfield - Limited Phase II ESA Sample ID: B-11-W (cont.) Lab ID: 24L1007-11Matrix: Water Flag(s)Units Analysis Date/Time Date Sampled: 12/11/24 13:05 Preparation Date/Time Sampled By: Michael Sauerwein Minimum Reporting Limit MethodResult Volatile Organic Compounds (cont.) ug/L 12/20/2412/20/241.0 EPA 8260D/5030BNDTrichlorofluoromethane ug/L 12/20/2412/20/240.8 EPA 8260D/5030BNDVinyl Chloride ug/L 12/20/2412/20/243.0 EPA 8260D/5030BNDXylenes, total ug/L 12/20/2412/20/2410.0 EPA 8260D/5030BNDGasoline Range Organics Project Name: 23501- Maverik (Chevron), 1350 E 700 S, Clearfield CtF WO#: 24L1007 www.ChemtechFord.com Page 34 of 66Page 34 of 67 xx Chemtech-Ford Laboratories Serving the Intermountain West Since 1953 Certificate of Analysis 9632 South 500 West Sandy, UT 84070 O:(801) 262-7299 F: (866) 792-0093 www.ChemtechFord.com CMT Technical Services, Inc. Michael Sauerwein 2800 South Redwood Road West Valley City, UT 84119-2375 PO#: Receipt: Date Reported: Project Name: 12/11/24 17:10 @ 4.9 °C 12/26/2024 23501- Maverik (Chevron), 1350 E 700 S, Clearfield - Limited Phase II ESA Report Footnotes Abbreviations ND = Not detected at the corresponding Minimum Reporting Limit (MRL). 1 mg/L = one milligram per liter or 1 mg/kg = one milligram per kilogram = 1 part per million. 1 ug/L = one microgram per liter or 1 ug/kg = one microgram per kilogram = 1 part per billion. 1 ng/L = one nanogram per liter or 1 ng/kg = one nanogram per kilogram = 1 part per trillion. On calculated parameters, there may be a slight difference between summing the rounded values shown on the report vs the unrounded values used in the calculation. Flag Descriptions J-LOW-C = Estimated low due to low recovery of CCV J-LOW-L = Estimated low due to low recovery of LCS Project Name: 23501- Maverik (Chevron), 1350 E 700 S, Clearfield CtF WO#: 24L1007 www.ChemtechFord.com Page 35 of 66Page 35 of 67 Page 36 of 67 Page 37 of 67 QC Report for Work Order (WO) - 24L1007 % Rec RPD RPD Max MRL DFResultSpk ValueLimitsSource ConcAnalyte Blank - EPA 1664B QC Sample ID: BYL0671-BLK1 Batch: BYL0671 Date Prepared: 12/16/2024 Date Analyzed: 12/16/2024 Oil & Grease (HEM)ND 5 1.00 TRPH (SGT-HEM)ND 5 1.00 LCS - EPA 1664B QC Sample ID: BYL0671-BS1 Batch: BYL0671 Date Prepared: 12/16/2024 Date Analyzed: 12/16/2024 Oil & Grease (HEM)92.8 78 - 114 37 40.0 5 1.00 TRPH (SGT-HEM)96.0 64 - 132 19 20.0 5 1.00 LCS Dup - EPA 1664B QC Sample ID: BYL0671-BSD1 Batch: BYL0671 Date Prepared: 12/16/2024 Date Analyzed: 12/16/2024 Oil & Grease (HEM)85.0 8.72 78 - 114 18 34 40.0 5 1.00 TRPH (SGT-HEM)90.5 5.90 64 - 132 34 18 20.0 5 1.00 CtF WO#: 24L1007 www.ChemtechFord.com Page 38 of 67 QC Report for Work Order (WO) - 24L1007 % Rec RPD RPD Max MRL DFResultSpk ValueLimitsSource ConcAnalyte Blank - EPA 6010D QC Sample ID: BYL0557-BLK1 Batch: BYL0557 Date Prepared: 12/12/2024 Date Analyzed: 12/13/2024 Arsenic, Total ND 0.0500 1.00 Barium, Total ND 0.005 1.00 Cadmium, Total ND 0.005 1.00 Chromium, Total ND 0.0050 1.00 Lead, Total ND 0.0200 1.00 Selenium, Total ND 0.0300 1.00 Silver, Total ND 0.005 1.00 LCS - EPA 6010D QC Sample ID: BYL0557-BS1 Batch: BYL0557 Date Prepared: 12/12/2024 Date Analyzed: 12/13/2024 Arsenic, Total 91.0 85 - 115 0.182 0.200 0.0500 1.00 Barium, Total 103 85 - 115 0.256 0.250 0.005 1.00 Cadmium, Total 89.2 85 - 115 0.178 0.200 0.005 1.00 Chromium, Total 94.6 85 - 115 0.189 0.200 0.0050 1.00 Lead, Total 88.3 85 - 115 0.177 0.200 0.0200 1.00 Selenium, Total 76.8 85 - 115 0.154 0.200 0.0300 1.00 QM-11 - The Laboratory Control Sample recovery was outside acceptance limits. The analytical batch was accepted based on the recovery of the Method Spike. Silver, Total 89.1 85 - 115 0.089 0.100 0.005 1.00 Matrix Spike - EPA 6010D QC Sample ID: BYL0557-MS1 QC Source Sample: XXXXXXX-XXBatch: BYL0557 Date Prepared: 12/12/2024 Date Analyzed: 12/13/2024 Arsenic, Total 99.2 75 - 125 0.198 ND 0.200 0.0500 1.00 Barium, Total 102 75 - 125 0.351 0.096 0.250 0.005 1.00 Cadmium, Total 87.2 75 - 125 0.174 ND 0.200 0.005 1.00 Chromium, Total 93.0 75 - 125 0.191 0.005 0.200 0.0050 1.00 Lead, Total 87.8 75 - 125 0.176 ND 0.200 0.0200 1.00 Selenium, Total 86.3 75 - 125 0.173 ND 0.200 0.0300 1.00 Silver, Total 91.7 75 - 125 0.092 ND 0.100 0.005 1.00 Matrix Spike Dup - EPA 6010D QC Sample ID: BYL0557-MSD1 QC Source Sample: XXXXXXX-XXBatch: BYL0557 Date Prepared: 12/12/2024 Date Analyzed: 12/13/2024 Arsenic, Total 100 0.854 75 - 125 20 0.200 ND 0.200 0.0500 1.00 Barium, Total 100 1.66 75 - 125 20 0.346 0.096 0.250 0.005 1.00 Cadmium, Total 86.2 1.15 75 - 125 20 0.172 ND 0.200 0.005 1.00 Chromium, Total 92.2 0.787 75 - 125 20 0.190 0.005 0.200 0.0050 1.00 Lead, Total 88.5 0.851 75 - 125 20 0.177 ND 0.200 0.0200 1.00 Selenium, Total 92.8 7.26 75 - 125 20 0.186 ND 0.200 0.0300 1.00 Silver, Total 91.2 0.547 75 - 125 20 0.091 ND 0.100 0.005 1.00 CtF WO#: 24L1007 www.ChemtechFord.com Page 39 of 67 QC Report for Work Order (WO) - 24L1007 % Rec RPD RPD Max MRL DFResultSpk ValueLimitsSource ConcAnalyte Blank - EPA 7470A QC Sample ID: BYL0525-BLK1 Batch: BYL0525 Date Prepared: 12/12/2024 Date Analyzed: 12/13/2024 Mercury, Total ND 0.0002 1.00 LCS - EPA 7470A QC Sample ID: BYL0525-BS1 Batch: BYL0525 Date Prepared: 12/12/2024 Date Analyzed: 12/13/2024 Mercury, Total 94.1 85 - 115 0.0047 0.00500 0.0002 1.00 Matrix Spike - EPA 7470A QC Sample ID: BYL0525-MS1 QC Source Sample: XXXXXXX-XXBatch: BYL0525 Date Prepared: 12/12/2024 Date Analyzed: 12/13/2024 Mercury, Total 98.2 75 - 125 0.0049 ND 0.00500 0.0002 1.00 Matrix Spike Dup - EPA 7470A QC Sample ID: BYL0525-MSD1 QC Source Sample: XXXXXXX-XXBatch: BYL0525 Date Prepared: 12/12/2024 Date Analyzed: 12/13/2024 Mercury, Total 99.7 1.53 75 - 125 20 0.0050 ND 0.00500 0.0002 1.00 CtF WO#: 24L1007 www.ChemtechFord.com Page 40 of 67 QC Report for Work Order (WO) - 24L1007 % Rec RPD RPD Max MRL DFResultSpk ValueLimitsSource ConcAnalyte Blank - EPA 8015 C QC Sample ID: BYL0714-BLK1 Batch: BYL0714 Date Prepared: 12/16/2024 Date Analyzed: 12/18/2024 Diesel Range Organics ND 1.0 1.00 LCS - EPA 8015 C QC Sample ID: BYL0714-BS1 Batch: BYL0714 Date Prepared: 12/16/2024 Date Analyzed: 12/18/2024 Diesel Range Organics 114 50 - 150 46 40.0 1.0 1.00 Matrix Spike - EPA 8015 C QC Sample ID: BYL0714-MS1 QC Source Sample: 24L1007-01Batch: BYL0714 Date Prepared: 12/16/2024 Date Analyzed: 12/18/2024 Diesel Range Organics 97.6 50 - 150 39 ND 40.0 1.0 1.00 Matrix Spike Dup - EPA 8015 C QC Sample ID: BYL0714-MSD1 QC Source Sample: 24L1007-01Batch: BYL0714 Date Prepared: 12/16/2024 Date Analyzed: 12/18/2024 Diesel Range Organics 102 4.19 50 - 150 20 41 ND 40.0 1.0 1.00 CtF WO#: 24L1007 www.ChemtechFord.com Page 41 of 67 QC Report for Work Order (WO) - 24L1007 % Rec RPD RPD Max MRL DFResultSpk ValueLimitsSource ConcAnalyte Blank - EPA 8260D QC Sample ID: BYL0912-BLK1 Batch: BYL0912 Date Prepared: 12/19/2024 Date Analyzed: 12/19/2024 1,1,1,2-Tetrachloroethane ND 1.0 1.00 1,1,1-Trichloroethane ND 1.0 1.00 1,1,2,2-Tetrachloroethane ND 1.0 1.00 1,1,2-Trichloroethane ND 1.0 1.00 1,1,2-Trichlorotrifluoroethane ND 1.0 1.00 1,1-Dichloroethane ND 1.0 1.00 1,1-Dichloroethene ND 1.0 1.00 1,1-Dichloropropene ND 1.0 1.00 1,2,3-Trichlorobenzene ND 1.0 1.00 1,2,3-Trichloropropane ND 1.0 1.00 1,2,4-Trichlorobenzene ND 1.0 1.00 1,2,4-Trimethylbenzene ND 1.0 1.00 1,2-Dibromo-3-chloropropane ND 1.0 1.00 1,2-Dibromoethane (EDB)ND 1.0 1.00 1,2-Dichlorobenzene ND 1.0 1.00 1,2-Dichloroethane ND 1.0 1.00 1,2-Dichloropropane ND 1.0 1.00 1,3,5-Trimethylbenzene ND 1.0 1.00 1,3-Dichlorobenzene ND 1.0 1.00 1,3-Dichloropropane ND 1.0 1.00 1,4-Dichlorobenzene ND 1.0 1.00 2,2-Dichloropropane ND 1.0 1.00 2-Chlorotoluene ND 1.0 1.00 2-Hexanone ND 10.0 1.00 2-Nitropropane ND 2.0 1.00 4-Chlorotoluene ND 1.0 1.00 Acetone ND 20.0 1.00 Acrylonitrile ND 5.0 1.00 Benzene ND 0.4 1.00 Bromobenzene ND 1.0 1.00 Bromochloromethane ND 1.0 1.00 Bromodichloromethane ND 1.0 1.00 Bromoform ND 1.0 1.00 Bromomethane ND 2.0 1.00 Carbon Disulfide ND 2.0 1.00 Carbon Tetrachloride ND 1.0 1.00 Chlorobenzene ND 1.0 1.00 Chloroethane ND 1.0 1.00 Chloroform ND 1.0 1.00 Chloromethane ND 1.0 1.00 cis-1,2-Dichloroethene ND 1.0 1.00 cis-1,3-Dichloropropene ND 1.0 1.00 Cyclohexanone ND 10.0 1.00 Dibromochloromethane ND 1.0 1.00 Dibromomethane ND 1.0 1.00 Dichlorodifluoromethane ND 1.0 1.00 Ethyl Acetate ND 2.0 1.00 Ethyl Ether ND 1.0 1.00 Ethylbenzene ND 1.0 1.00 Hexachlorobutadiene ND 1.0 1.00 Isobutanol ND 20.0 1.00 CtF WO#: 24L1007 www.ChemtechFord.com Page 42 of 67 QC Report for Work Order (WO) - 24L1007 % Rec RPD RPD Max MRL DFResultSpk ValueLimitsSource ConcAnalyte Blank - EPA 8260D (cont.) QC Sample ID: BYL0912-BLK1 Batch: BYL0912 Date Prepared: 12/19/2024 Date Analyzed: 12/19/2024 Isopropylbenzene ND 1.0 1.00 Methyl Ethyl Ketone ND 2.0 1.00 Methyl Isobutyl Ketone ND 5.0 1.00 Methylene Chloride ND 1.0 1.00 Methyl-tert-butyl ether (MTBE)ND 0.6 1.00 Naphthalene ND 1.0 1.00 n-Butyl Alcohol ND 50.0 1.00 n-Butylbenzene ND 1.0 1.00 n-Propyl Benzene ND 1.0 1.00 Pentachloroethane ND 1.0 1.00 p-Isopropyltoluene ND 1.0 1.00 sec-Butyl Benzene ND 1.0 1.00 Styrene ND 1.0 1.00 tert-Butylbenzene ND 1.0 1.00 Tetrachloroethene ND 1.0 1.00 Toluene ND 1.0 1.00 trans-1,2-Dichloroethene ND 1.0 1.00 trans-1,3-Dichloropropene ND 1.0 1.00 Trichloroethene ND 1.0 1.00 Trichlorofluoromethane ND 1.0 1.00 Vinyl Chloride ND 0.8 1.00 Xylenes, total ND 3.0 1.00 QC Sample ID: BYL1014-BLK1 Batch: BYL1014 Date Prepared: 12/20/2024 Date Analyzed: 12/20/2024 1,1,1,2-Tetrachloroethane ND 1.0 1.00 1,1,1-Trichloroethane ND 1.0 1.00 1,1,2,2-Tetrachloroethane ND 1.0 1.00 1,1,2-Trichloroethane ND 1.0 1.00 1,1,2-Trichlorotrifluoroethane ND 1.0 1.00 1,1-Dichloroethane ND 1.0 1.00 1,1-Dichloroethene ND 1.0 1.00 1,1-Dichloropropene ND 1.0 1.00 1,2,3-Trichlorobenzene ND 1.0 1.00 1,2,3-Trichloropropane ND 1.0 1.00 1,2,4-Trichlorobenzene ND 1.0 1.00 1,2,4-Trimethylbenzene ND 1.0 1.00 1,2-Dibromo-3-chloropropane ND 1.0 1.00 1,2-Dibromoethane (EDB)ND 1.0 1.00 1,2-Dichlorobenzene ND 1.0 1.00 1,2-Dichloroethane ND 1.0 1.00 1,2-Dichloropropane ND 1.0 1.00 1,3,5-Trimethylbenzene ND 1.0 1.00 1,3-Dichlorobenzene ND 1.0 1.00 1,3-Dichloropropane ND 1.0 1.00 1,4-Dichlorobenzene ND 1.0 1.00 2,2-Dichloropropane ND 1.0 1.00 2-Chlorotoluene ND 1.0 1.00 2-Hexanone ND 10.0 1.00 2-Nitropropane ND 2.0 1.00 4-Chlorotoluene ND 1.0 1.00 CtF WO#: 24L1007 www.ChemtechFord.com Page 43 of 67 QC Report for Work Order (WO) - 24L1007 % Rec RPD RPD Max MRL DFResultSpk ValueLimitsSource ConcAnalyte Blank - EPA 8260D (cont.) QC Sample ID: BYL1014-BLK1 Batch: BYL1014 Date Prepared: 12/20/2024 Date Analyzed: 12/20/2024 Acetone ND 20.0 1.00 Acrylonitrile ND 5.0 1.00 Benzene ND 0.4 1.00 Bromobenzene ND 1.0 1.00 Bromochloromethane ND 1.0 1.00 Bromodichloromethane ND 1.0 1.00 Bromoform ND 1.0 1.00 Bromomethane ND 2.0 1.00 Carbon Disulfide ND 2.0 1.00 Carbon Tetrachloride ND 1.0 1.00 Chlorobenzene ND 1.0 1.00 Chloroethane ND 1.0 1.00 Chloroform ND 1.0 1.00 Chloromethane ND 1.0 1.00 cis-1,2-Dichloroethene ND 1.0 1.00 cis-1,3-Dichloropropene ND 1.0 1.00 Cyclohexanone ND 10.0 1.00 Dibromochloromethane ND 1.0 1.00 Dibromomethane ND 1.0 1.00 Dichlorodifluoromethane ND 1.0 1.00 Ethyl Acetate ND 2.0 1.00 Ethyl Ether ND 1.0 1.00 Ethylbenzene ND 1.0 1.00 Hexachlorobutadiene ND 1.0 1.00 Isobutanol ND 20.0 1.00 Isopropylbenzene ND 1.0 1.00 Methyl Ethyl Ketone ND 2.0 1.00 Methyl Isobutyl Ketone ND 5.0 1.00 Methylene Chloride ND 1.0 1.00 Methyl-tert-butyl ether (MTBE)ND 0.6 1.00 Naphthalene ND 1.0 1.00 n-Butyl Alcohol ND 50.0 1.00 n-Butylbenzene ND 1.0 1.00 n-Propyl Benzene ND 1.0 1.00 Pentachloroethane ND 1.0 1.00 p-Isopropyltoluene ND 1.0 1.00 sec-Butyl Benzene ND 1.0 1.00 Styrene ND 1.0 1.00 tert-Butylbenzene ND 1.0 1.00 Tetrachloroethene ND 1.0 1.00 Toluene ND 1.0 1.00 trans-1,2-Dichloroethene ND 1.0 1.00 trans-1,3-Dichloropropene ND 1.0 1.00 Trichloroethene ND 1.0 1.00 Trichlorofluoromethane ND 1.0 1.00 Vinyl Chloride ND 0.8 1.00 Xylenes, total ND 3.0 1.00 QC Sample ID: BYL1057-BLK1 Batch: BYL1057 Date Prepared: 12/23/2024 Date Analyzed: 12/23/2024 1,1,1,2-Tetrachloroethane ND 1.0 1.00 CtF WO#: 24L1007 www.ChemtechFord.com Page 44 of 67 QC Report for Work Order (WO) - 24L1007 % Rec RPD RPD Max MRL DFResultSpk ValueLimitsSource ConcAnalyte Blank - EPA 8260D (cont.) QC Sample ID: BYL1057-BLK1 Batch: BYL1057 Date Prepared: 12/23/2024 Date Analyzed: 12/23/2024 1,1,1-Trichloroethane ND 1.0 1.00 1,1,2,2-Tetrachloroethane ND 1.0 1.00 1,1,2-Trichloroethane ND 1.0 1.00 1,1,2-Trichlorotrifluoroethane ND 1.0 1.00 1,1-Dichloroethane ND 1.0 1.00 1,1-Dichloroethene ND 1.0 1.00 1,1-Dichloropropene ND 1.0 1.00 1,2,3-Trichlorobenzene ND 1.0 1.00 1,2,3-Trichloropropane ND 1.0 1.00 1,2,4-Trichlorobenzene ND 1.0 1.00 1,2,4-Trimethylbenzene ND 1.0 1.00 1,2-Dibromo-3-chloropropane ND 1.0 1.00 1,2-Dibromoethane (EDB)ND 1.0 1.00 1,2-Dichlorobenzene ND 1.0 1.00 1,2-Dichloroethane ND 1.0 1.00 1,2-Dichloropropane ND 1.0 1.00 1,3,5-Trimethylbenzene ND 1.0 1.00 1,3-Dichlorobenzene ND 1.0 1.00 1,3-Dichloropropane ND 1.0 1.00 1,4-Dichlorobenzene ND 1.0 1.00 2,2-Dichloropropane ND 1.0 1.00 2-Chlorotoluene ND 1.0 1.00 2-Hexanone ND 10.0 1.00 2-Nitropropane ND 2.0 1.00 4-Chlorotoluene ND 1.0 1.00 Acetone ND 10.0 1.00 Acrylonitrile ND 5.0 1.00 Benzene ND 0.4 1.00 Bromobenzene ND 1.0 1.00 Bromochloromethane ND 1.0 1.00 Bromodichloromethane ND 1.0 1.00 Bromoform ND 1.0 1.00 Bromomethane ND 1.0 1.00 Carbon Disulfide ND 1.0 1.00 Carbon Tetrachloride ND 1.0 1.00 Chlorobenzene ND 1.0 1.00 Chloroethane ND 1.0 1.00 Chloroform ND 1.0 1.00 Chloromethane ND 1.0 1.00 cis-1,2-Dichloroethene ND 1.0 1.00 cis-1,3-Dichloropropene ND 1.0 1.00 Cyclohexanone ND 10.0 1.00 Dibromochloromethane ND 1.0 1.00 Dibromomethane ND 1.0 1.00 Dichlorodifluoromethane ND 1.0 1.00 Ethyl Acetate ND 2.0 1.00 Ethyl Ether ND 1.0 1.00 Ethylbenzene ND 1.0 1.00 Hexachlorobutadiene ND 1.0 1.00 Isobutanol ND 20.0 1.00 Isopropylbenzene ND 1.0 1.00 CtF WO#: 24L1007 www.ChemtechFord.com Page 45 of 67 QC Report for Work Order (WO) - 24L1007 % Rec RPD RPD Max MRL DFResultSpk ValueLimitsSource ConcAnalyte Blank - EPA 8260D (cont.) QC Sample ID: BYL1057-BLK1 Batch: BYL1057 Date Prepared: 12/23/2024 Date Analyzed: 12/23/2024 Methyl Ethyl Ketone ND 2.0 1.00 Methyl Isobutyl Ketone ND 5.0 1.00 Methylene Chloride ND 1.0 1.00 Methyl-tert-butyl ether (MTBE)ND 0.6 1.00 Naphthalene ND 1.0 1.00 n-Butyl Alcohol ND 50.0 1.00 n-Butylbenzene ND 1.0 1.00 n-Propyl Benzene ND 1.0 1.00 Pentachloroethane ND 1.0 1.00 p-Isopropyltoluene ND 1.0 1.00 sec-Butyl Benzene ND 1.0 1.00 Styrene ND 1.0 1.00 tert-Butylbenzene ND 1.0 1.00 Tetrachloroethene ND 1.0 1.00 Toluene ND 1.0 1.00 trans-1,2-Dichloroethene ND 1.0 1.00 trans-1,3-Dichloropropene ND 1.0 1.00 Trichloroethene ND 1.0 1.00 Trichlorofluoromethane ND 1.0 1.00 Vinyl Chloride ND 0.8 1.00 Xylenes, total ND 1.0 1.00 LCS - EPA 8260D QC Sample ID: BYL0912-BS1 Batch: BYL0912 Date Prepared: 12/19/2024 Date Analyzed: 12/19/2024 1,1,1,2-Tetrachloroethane 81.4 70 - 130 8.14 10.0 1.0 1.00 1,1,1-Trichloroethane 91.7 70 - 130 9.17 10.0 1.0 1.00 1,1,2,2-Tetrachloroethane 114 70 - 130 11.4 10.0 1.0 1.00 1,1,2-Trichloroethane 92.9 70 - 130 9.29 10.0 1.0 1.00 1,1,2-Trichlorotrifluoroethane 67.6 70 - 130 6.76 10.0 1.0 1.00 J-LOW-L - Estimated low due to low recovery of LCS 1,1-Dichloroethane 102 70 - 130 10.2 10.0 1.0 1.00 1,1-Dichloroethene 88.0 70 - 130 8.80 10.0 1.0 1.00 1,1-Dichloropropene 80.5 70 - 130 8.05 10.0 1.0 1.00 1,2,3-Trichlorobenzene 88.7 70 - 130 8.87 10.0 1.0 1.00 1,2,3-Trichloropropane 97.8 70 - 130 9.78 10.0 1.0 1.00 1,2,4-Trichlorobenzene 91.5 70 - 130 9.15 10.0 1.0 1.00 1,2,4-Trimethylbenzene 85.3 70 - 130 8.53 10.0 1.0 1.00 1,2-Dibromo-3-chloropropane 79.8 70 - 130 7.98 10.0 1.0 1.00 1,2-Dibromoethane (EDB)105 70 - 130 10.5 10.0 1.0 1.00 1,2-Dichlorobenzene 102 70 - 130 10.2 10.0 1.0 1.00 1,2-Dichloroethane 96.4 70 - 130 9.64 10.0 1.0 1.00 1,2-Dichloropropane 96.9 70 - 130 9.69 10.0 1.0 1.00 1,3,5-Trimethylbenzene 87.2 70 - 130 8.72 10.0 1.0 1.00 1,3-Dichlorobenzene 94.1 70 - 130 9.41 10.0 1.0 1.00 1,3-Dichloropropane 81.7 70 - 130 8.17 10.0 1.0 1.00 1,4-Dichlorobenzene 105 70 - 130 10.5 10.0 1.0 1.00 2,2-Dichloropropane 95.0 70 - 130 9.50 10.0 1.0 1.00 2-Chlorotoluene 94.1 70 - 130 9.41 10.0 1.0 1.00 2-Hexanone 70 - 130 ND 10.0 10.0 1.00 J-LOW-L - Estimated low due to low recovery of LCS CtF WO#: 24L1007 www.ChemtechFord.com Page 46 of 67 QC Report for Work Order (WO) - 24L1007 % Rec RPD RPD Max MRL DFResultSpk ValueLimitsSource ConcAnalyte LCS - EPA 8260D (cont.) QC Sample ID: BYL0912-BS1 Batch: BYL0912 Date Prepared: 12/19/2024 Date Analyzed: 12/19/2024 2-Nitropropane 202 70 - 130 40.5 20.0 2.0 1.00 HB - Recovery for this parameter exceeded the upper acceptance limit. Associated sample(s) were all non-detect and therefore accepted and reported for this parameter. 4-Chlorotoluene 96.3 70 - 130 9.63 10.0 1.0 1.00 Acetone 88.1 70 - 130 88.1 100 20.0 1.00 Acrylonitrile 112 70 - 130 55.9 50.0 5.0 1.00 Benzene 89.2 70 - 130 8.92 10.0 0.4 1.00 Bromobenzene 92.8 70 - 130 9.28 10.0 1.0 1.00 Bromochloromethane 117 70 - 130 11.7 10.0 1.0 1.00 Bromodichloromethane 92.7 70 - 130 9.27 10.0 1.0 1.00 Bromoform 92.3 70 - 130 9.23 10.0 1.0 1.00 Bromomethane 72.5 70 - 130 7.25 10.0 2.0 1.00 Carbon Disulfide 84.0 70 - 130 8.40 10.0 2.0 1.00 Carbon Tetrachloride 71.8 70 - 130 7.18 10.0 1.0 1.00 Chlorobenzene 94.1 70 - 130 9.41 10.0 1.0 1.00 Chloroethane 99.1 70 - 130 9.91 10.0 1.0 1.00 Chloroform 97.4 70 - 130 9.74 10.0 1.0 1.00 Chloromethane 55.4 70 - 130 5.54 10.0 1.0 1.00 J-LOW-L - Estimated low due to low recovery of LCS cis-1,2-Dichloroethene 93.8 70 - 130 9.38 10.0 1.0 1.00 cis-1,3-Dichloropropene 102 70 - 130 10.2 10.0 1.0 1.00 Cyclohexanone 65.5 70 - 130 65.5 100 10.0 1.00 J-LOW-L - Estimated low due to low recovery of LCS Dibromochloromethane 95.4 70 - 130 9.54 10.0 1.0 1.00 Dibromomethane 78.7 70 - 130 7.87 10.0 1.0 1.00 Dichlorodifluoromethane 66.3 70 - 130 6.63 10.0 1.0 1.00 J-LOW-L - Estimated low due to low recovery of LCS Ethyl Acetate 87.6 70 - 130 17.5 20.0 2.0 1.00 Ethyl Ether 74.5 70 - 130 7.45 10.0 1.0 1.00 Ethylbenzene 92.2 70 - 130 9.22 10.0 1.0 1.00 Hexachlorobutadiene 71.7 70 - 130 7.17 10.0 1.0 1.00 Isobutanol 66.7 70 - 130 133 200 20.0 1.00 J-LOW-L - Estimated low due to low recovery of LCS Isopropylbenzene 85.9 70 - 130 8.59 10.0 1.0 1.00 Methyl Ethyl Ketone 119 70 - 130 11.9 10.0 2.0 1.00 Methyl Isobutyl Ketone 66.8 70 - 130 6.68 10.0 5.0 1.00 J-LOW-L - Estimated low due to low recovery of LCS Methylene Chloride 119 70 - 130 11.9 10.0 1.0 1.00 Methyl-tert-butyl ether (MTBE)82.8 70 - 130 8.28 10.0 0.6 1.00 Naphthalene 93.0 70 - 130 9.30 10.0 1.0 1.00 n-Butyl Alcohol 60.7 70 - 130 60.7 100 50.0 1.00 J-LOW-L - Estimated low due to low recovery of LCS n-Butylbenzene 80.0 70 - 130 8.00 10.0 1.0 1.00 n-Propyl Benzene 83.7 70 - 130 8.37 10.0 1.0 1.00 Pentachloroethane 66.4 70 - 130 6.64 10.0 1.0 1.00 J-LOW-L - Estimated low due to low recovery of LCS p-Isopropyltoluene 87.9 70 - 130 8.79 10.0 1.0 1.00 sec-Butyl Benzene 79.6 70 - 130 7.96 10.0 1.0 1.00 Styrene 91.7 70 - 130 9.17 10.0 1.0 1.00 tert-Butylbenzene 80.7 70 - 130 8.07 10.0 1.0 1.00 Tetrachloroethene 79.2 70 - 130 7.92 10.0 1.0 1.00 CtF WO#: 24L1007 www.ChemtechFord.com Page 47 of 67 QC Report for Work Order (WO) - 24L1007 % Rec RPD RPD Max MRL DFResultSpk ValueLimitsSource ConcAnalyte LCS - EPA 8260D (cont.) QC Sample ID: BYL0912-BS1 Batch: BYL0912 Date Prepared: 12/19/2024 Date Analyzed: 12/19/2024 Toluene 83.2 70 - 130 8.32 10.0 1.0 1.00 trans-1,2-Dichloroethene 78.1 70 - 130 7.81 10.0 1.0 1.00 trans-1,3-Dichloropropene 88.8 70 - 130 8.88 10.0 1.0 1.00 Trichloroethene 87.8 70 - 130 8.78 10.0 1.0 1.00 Trichlorofluoromethane 75.0 70 - 130 7.50 10.0 1.0 1.00 Vinyl Chloride 67.2 70 - 130 6.72 10.0 0.8 1.00 J-LOW-L - Estimated low due to low recovery of LCS Xylenes, total 93.9 70 - 130 28.2 30.0 3.0 1.00 QC Sample ID: BYL1014-BS1 Batch: BYL1014 Date Prepared: 12/20/2024 Date Analyzed: 12/20/2024 1,1,1,2-Tetrachloroethane 99.1 70 - 130 9.91 10.0 1.0 1.00 1,1,1-Trichloroethane 117 70 - 130 11.7 10.0 1.0 1.00 1,1,2,2-Tetrachloroethane 104 70 - 130 10.4 10.0 1.0 1.00 1,1,2-Trichloroethane 84.2 70 - 130 8.42 10.0 1.0 1.00 1,1,2-Trichlorotrifluoroethane 64.8 70 - 130 6.48 10.0 1.0 1.00 J-LOW-L - Estimated low due to low recovery of LCS 1,1-Dichloroethane 124 70 - 130 12.4 10.0 1.0 1.00 1,1-Dichloroethene 124 70 - 130 12.4 10.0 1.0 1.00 1,1-Dichloropropene 97.1 70 - 130 9.71 10.0 1.0 1.00 1,2,3-Trichlorobenzene 69.4 70 - 130 6.94 10.0 1.0 1.00 J-LOW-L - Estimated low due to low recovery of LCS 1,2,3-Trichloropropane 84.2 70 - 130 8.42 10.0 1.0 1.00 1,2,4-Trichlorobenzene 76.8 70 - 130 7.68 10.0 1.0 1.00 1,2,4-Trimethylbenzene 86.7 70 - 130 8.67 10.0 1.0 1.00 1,2-Dibromo-3-chloropropane 93.4 70 - 130 9.34 10.0 1.0 1.00 1,2-Dibromoethane (EDB)92.7 70 - 130 9.27 10.0 1.0 1.00 1,2-Dichlorobenzene 83.0 70 - 130 8.30 10.0 1.0 1.00 1,2-Dichloroethane 104 70 - 130 10.4 10.0 1.0 1.00 1,2-Dichloropropane 98.1 70 - 130 9.81 10.0 1.0 1.00 1,3,5-Trimethylbenzene 87.0 70 - 130 8.70 10.0 1.0 1.00 1,3-Dichlorobenzene 83.2 70 - 130 8.32 10.0 1.0 1.00 1,3-Dichloropropane 96.0 70 - 130 9.60 10.0 1.0 1.00 1,4-Dichlorobenzene 93.5 70 - 130 9.35 10.0 1.0 1.00 2,2-Dichloropropane 108 70 - 130 10.8 10.0 1.0 1.00 2-Chlorotoluene 91.8 70 - 130 9.18 10.0 1.0 1.00 2-Hexanone 70 - 130 ND 10.0 10.0 1.00 J-LOW-L - Estimated low due to low recovery of LCS 2-Nitropropane 14.8 70 - 130 2.95 20.0 2.0 1.00 J-LOW-L - Estimated low due to low recovery of LCS 4-Chlorotoluene 92.7 70 - 130 9.27 10.0 1.0 1.00 Acetone 84.1 70 - 130 84.1 100 20.0 1.00 Acrylonitrile 105 70 - 130 52.7 50.0 5.0 1.00 Benzene 101 70 - 130 10.1 10.0 0.4 1.00 Bromobenzene 91.3 70 - 130 9.13 10.0 1.0 1.00 Bromochloromethane 118 70 - 130 11.8 10.0 1.0 1.00 Bromodichloromethane 97.5 70 - 130 9.75 10.0 1.0 1.00 Bromoform 74.3 70 - 130 7.43 10.0 1.0 1.00 Bromomethane 111 70 - 130 11.1 10.0 2.0 1.00 Carbon Disulfide 108 70 - 130 10.8 10.0 2.0 1.00 Carbon Tetrachloride 98.2 70 - 130 9.82 10.0 1.0 1.00 CtF WO#: 24L1007 www.ChemtechFord.com Page 48 of 67 QC Report for Work Order (WO) - 24L1007 % Rec RPD RPD Max MRL DFResultSpk ValueLimitsSource ConcAnalyte LCS - EPA 8260D (cont.) QC Sample ID: BYL1014-BS1 Batch: BYL1014 Date Prepared: 12/20/2024 Date Analyzed: 12/20/2024 Chlorobenzene 93.3 70 - 130 9.33 10.0 1.0 1.00 Chloroethane 127 70 - 130 12.7 10.0 1.0 1.00 Chloroform 110 70 - 130 11.0 10.0 1.0 1.00 Chloromethane 86.1 70 - 130 8.61 10.0 1.0 1.00 cis-1,2-Dichloroethene 106 70 - 130 10.6 10.0 1.0 1.00 cis-1,3-Dichloropropene 101 70 - 130 10.1 10.0 1.0 1.00 Cyclohexanone 51.6 70 - 130 51.6 100 10.0 1.00 J-LOW-L - Estimated low due to low recovery of LCS Dibromochloromethane 88.3 70 - 130 8.83 10.0 1.0 1.00 Dibromomethane 78.9 70 - 130 7.89 10.0 1.0 1.00 Dichlorodifluoromethane 89.8 70 - 130 8.98 10.0 1.0 1.00 Ethyl Acetate 87.7 70 - 130 17.5 20.0 2.0 1.00 Ethyl Ether 70.9 70 - 130 7.09 10.0 1.0 1.00 Ethylbenzene 95.0 70 - 130 9.50 10.0 1.0 1.00 Hexachlorobutadiene 67.1 70 - 130 6.71 10.0 1.0 1.00 J-LOW-L - Estimated low due to low recovery of LCS Isobutanol 77.9 70 - 130 156 200 20.0 1.00 Isopropylbenzene 84.1 70 - 130 8.41 10.0 1.0 1.00 Methyl Ethyl Ketone 80.6 70 - 130 8.06 10.0 2.0 1.00 Methyl Isobutyl Ketone 99.7 70 - 130 9.97 10.0 5.0 1.00 Methylene Chloride 119 70 - 130 11.9 10.0 1.0 1.00 Methyl-tert-butyl ether (MTBE)86.5 70 - 130 8.65 10.0 0.6 1.00 Naphthalene 74.4 70 - 130 7.44 10.0 1.0 1.00 n-Butyl Alcohol 21.1 70 - 130 21.1 100 50.0 1.00 J - Detected but below the Reporting Limit; therefore, result is an estimated concentration (CLP J-Flag). J-LOW-L - Estimated low due to low recovery of LCS n-Butylbenzene 74.1 70 - 130 7.41 10.0 1.0 1.00 n-Propyl Benzene 86.2 70 - 130 8.62 10.0 1.0 1.00 Pentachloroethane 84.6 70 - 130 8.46 10.0 1.0 1.00 p-Isopropyltoluene 86.3 70 - 130 8.63 10.0 1.0 1.00 sec-Butyl Benzene 85.8 70 - 130 8.58 10.0 1.0 1.00 Styrene 90.9 70 - 130 9.09 10.0 1.0 1.00 tert-Butylbenzene 84.5 70 - 130 8.45 10.0 1.0 1.00 Tetrachloroethene 80.3 70 - 130 8.03 10.0 1.0 1.00 Toluene 95.1 70 - 130 9.51 10.0 1.0 1.00 trans-1,2-Dichloroethene 112 70 - 130 11.2 10.0 1.0 1.00 trans-1,3-Dichloropropene 88.4 70 - 130 8.84 10.0 1.0 1.00 Trichloroethene 96.9 70 - 130 9.69 10.0 1.0 1.00 Trichlorofluoromethane 124 70 - 130 12.4 10.0 1.0 1.00 Vinyl Chloride 120 70 - 130 12.0 10.0 0.8 1.00 Xylenes, total 95.7 70 - 130 28.7 30.0 3.0 1.00 QC Sample ID: BYL1057-BS1 Batch: BYL1057 Date Prepared: 12/23/2024 Date Analyzed: 12/23/2024 1,1,1,2-Tetrachloroethane 79.8 70 - 130 7.98 10.0 1.0 1.00 1,1,1-Trichloroethane 81.2 70 - 130 8.12 10.0 1.0 1.00 1,1,2,2-Tetrachloroethane 101 70 - 130 10.1 10.0 1.0 1.00 1,1,2-Trichloroethane 85.6 70 - 130 8.56 10.0 1.0 1.00 1,1,2-Trichlorotrifluoroethane 61.6 70 - 130 6.16 10.0 1.0 1.00 J-LOW-L - Estimated low due to low recovery of LCS 1,1-Dichloroethane 92.6 70 - 130 9.26 10.0 1.0 1.00 CtF WO#: 24L1007 www.ChemtechFord.com Page 49 of 67 QC Report for Work Order (WO) - 24L1007 % Rec RPD RPD Max MRL DFResultSpk ValueLimitsSource ConcAnalyte LCS - EPA 8260D (cont.) QC Sample ID: BYL1057-BS1 Batch: BYL1057 Date Prepared: 12/23/2024 Date Analyzed: 12/23/2024 1,1-Dichloroethene 75.3 70 - 130 7.53 10.0 1.0 1.00 1,1-Dichloropropene 68.7 70 - 130 6.87 10.0 1.0 1.00 J-LOW-L - Estimated low due to low recovery of LCS 1,2,3-Trichlorobenzene 80.9 70 - 130 8.09 10.0 1.0 1.00 1,2,3-Trichloropropane 83.9 70 - 130 8.39 10.0 1.0 1.00 1,2,4-Trichlorobenzene 93.2 70 - 130 9.32 10.0 1.0 1.00 1,2,4-Trimethylbenzene 86.7 70 - 130 8.67 10.0 1.0 1.00 1,2-Dibromo-3-chloropropane 93.3 70 - 130 9.33 10.0 1.0 1.00 1,2-Dibromoethane (EDB)94.2 70 - 130 9.42 10.0 1.0 1.00 1,2-Dichlorobenzene 95.0 70 - 130 9.50 10.0 1.0 1.00 1,2-Dichloroethane 94.7 70 - 130 9.47 10.0 1.0 1.00 1,2-Dichloropropane 75.1 70 - 130 7.51 10.0 1.0 1.00 1,3,5-Trimethylbenzene 88.6 70 - 130 8.86 10.0 1.0 1.00 1,3-Dichlorobenzene 94.3 70 - 130 9.43 10.0 1.0 1.00 1,3-Dichloropropane 87.9 70 - 130 8.79 10.0 1.0 1.00 1,4-Dichlorobenzene 104 70 - 130 10.4 10.0 1.0 1.00 2,2-Dichloropropane 82.0 70 - 130 8.20 10.0 1.0 1.00 2-Chlorotoluene 98.1 70 - 130 9.81 10.0 1.0 1.00 2-Hexanone 70 - 130 ND 10.0 10.0 1.00 J-LOW-L - Estimated low due to low recovery of LCS 2-Nitropropane 142 70 - 130 28.3 20.0 2.0 1.00 HB - Recovery for this parameter exceeded the upper acceptance limit. Associated sample(s) were all non-detect and therefore accepted and reported for this parameter. 4-Chlorotoluene 104 70 - 130 10.4 10.0 1.0 1.00 Acetone 81.6 70 - 130 81.6 100 10.0 1.00 Acrylonitrile 100 70 - 130 50.2 50.0 5.0 1.00 Benzene 82.8 70 - 130 8.28 10.0 0.4 1.00 Bromobenzene 91.6 70 - 130 9.16 10.0 1.0 1.00 Bromochloromethane 109 70 - 130 10.9 10.0 1.0 1.00 Bromodichloromethane 84.9 70 - 130 8.49 10.0 1.0 1.00 Bromoform 71.7 70 - 130 7.17 10.0 1.0 1.00 Bromomethane 70 - 130 ND 10.0 1.0 1.00 J-LOW-L - Estimated low due to low recovery of LCS Carbon Disulfide 78.5 70 - 130 7.85 10.0 1.0 1.00 Carbon Tetrachloride 65.4 70 - 130 6.54 10.0 1.0 1.00 J-LOW-L - Estimated low due to low recovery of LCS Chlorobenzene 82.8 70 - 130 8.28 10.0 1.0 1.00 Chloroethane 80.7 70 - 130 8.07 10.0 1.0 1.00 Chloroform 89.2 70 - 130 8.92 10.0 1.0 1.00 Chloromethane 52.5 70 - 130 5.25 10.0 1.0 1.00 J-LOW-L - Estimated low due to low recovery of LCS cis-1,2-Dichloroethene 82.4 70 - 130 8.24 10.0 1.0 1.00 cis-1,3-Dichloropropene 76.1 70 - 130 7.61 10.0 1.0 1.00 Cyclohexanone 43.5 70 - 130 43.5 100 10.0 1.00 J-LOW-L - Estimated low due to low recovery of LCS Dibromochloromethane 78.1 70 - 130 7.81 10.0 1.0 1.00 Dibromomethane 84.3 70 - 130 8.43 10.0 1.0 1.00 Dichlorodifluoromethane 55.5 70 - 130 5.55 10.0 1.0 1.00 J-LOW-L - Estimated low due to low recovery of LCS Ethyl Acetate 88.1 70 - 130 17.6 20.0 2.0 1.00 Ethyl Ether 71.4 70 - 130 7.14 10.0 1.0 1.00 CtF WO#: 24L1007 www.ChemtechFord.com Page 50 of 67 QC Report for Work Order (WO) - 24L1007 % Rec RPD RPD Max MRL DFResultSpk ValueLimitsSource ConcAnalyte LCS - EPA 8260D (cont.) QC Sample ID: BYL1057-BS1 Batch: BYL1057 Date Prepared: 12/23/2024 Date Analyzed: 12/23/2024 Ethylbenzene 81.8 70 - 130 8.18 10.0 1.0 1.00 Hexachlorobutadiene 66.1 70 - 130 6.61 10.0 1.0 1.00 J-LOW-L - Estimated low due to low recovery of LCS Isobutanol 70.1 70 - 130 140 200 20.0 1.00 Isopropylbenzene 84.3 70 - 130 8.43 10.0 1.0 1.00 Methyl Ethyl Ketone 77.2 70 - 130 7.72 10.0 2.0 1.00 Methyl Isobutyl Ketone 75.7 70 - 130 7.57 10.0 5.0 1.00 Methylene Chloride 96.7 70 - 130 9.67 10.0 1.0 1.00 Methyl-tert-butyl ether (MTBE)76.9 70 - 130 7.69 10.0 0.6 1.00 Naphthalene 97.4 70 - 130 9.74 10.0 1.0 1.00 n-Butyl Alcohol 53.7 70 - 130 53.7 100 50.0 1.00 J-LOW-L - Estimated low due to low recovery of LCS n-Butylbenzene 74.0 70 - 130 7.40 10.0 1.0 1.00 n-Propyl Benzene 76.3 70 - 130 7.63 10.0 1.0 1.00 Pentachloroethane 69.5 70 - 130 6.95 10.0 1.0 1.00 J-LOW-L - Estimated low due to low recovery of LCS p-Isopropyltoluene 84.1 70 - 130 8.41 10.0 1.0 1.00 sec-Butyl Benzene 77.3 70 - 130 7.73 10.0 1.0 1.00 Styrene 84.0 70 - 130 8.40 10.0 1.0 1.00 tert-Butylbenzene 78.9 70 - 130 7.89 10.0 1.0 1.00 Tetrachloroethene 65.0 70 - 130 6.50 10.0 1.0 1.00 J-LOW-L - Estimated low due to low recovery of LCS Toluene 80.4 70 - 130 8.04 10.0 1.0 1.00 trans-1,2-Dichloroethene 69.4 70 - 130 6.94 10.0 1.0 1.00 J-LOW-L - Estimated low due to low recovery of LCS trans-1,3-Dichloropropene 69.4 70 - 130 6.94 10.0 1.0 1.00 J-LOW-L - Estimated low due to low recovery of LCS Trichloroethene 77.9 70 - 130 7.79 10.0 1.0 1.00 Trichlorofluoromethane 62.6 70 - 130 6.26 10.0 1.0 1.00 J-LOW-L - Estimated low due to low recovery of LCS Vinyl Chloride 66.9 70 - 130 6.69 10.0 0.8 1.00 J-LOW-L - Estimated low due to low recovery of LCS Xylenes, total 85.1 70 - 130 25.5 30.0 1.0 1.00 Leach Fluid Blank - EPA 8260D QC Sample ID: BYL0912-LBK1 Batch: BYL0912 Date Prepared: 12/19/2024 Date Analyzed: 12/19/2024 1,1,1,2-Tetrachloroethane ND 250 1.00 1,1,1-Trichloroethane ND 250 1.00 1,1,2,2-Tetrachloroethane ND 250 1.00 1,1,2-Trichloroethane ND 250 1.00 1,1,2-Trichlorotrifluoroethane ND 250 1.00 1,1-Dichloroethane ND 250 1.00 1,1-Dichloroethene ND 250 1.00 1,1-Dichloropropene ND 250 1.00 1,2,3-Trichlorobenzene ND 250 1.00 1,2,3-Trichloropropane ND 250 1.00 1,2,4-Trichlorobenzene ND 250 1.00 1,2,4-Trimethylbenzene ND 250 1.00 1,2-Dibromo-3-chloropropane ND 250 1.00 1,2-Dibromoethane (EDB)ND 250 1.00 CtF WO#: 24L1007 www.ChemtechFord.com Page 51 of 67 QC Report for Work Order (WO) - 24L1007 % Rec RPD RPD Max MRL DFResultSpk ValueLimitsSource ConcAnalyte Leach Fluid Blank - EPA 8260D (cont.) QC Sample ID: BYL0912-LBK1 Batch: BYL0912 Date Prepared: 12/19/2024 Date Analyzed: 12/19/2024 1,2-Dichlorobenzene ND 250 1.00 1,2-Dichloroethane ND 250 1.00 1,2-Dichloropropane ND 250 1.00 1,3,5-Trimethylbenzene ND 250 1.00 1,3-Dichlorobenzene ND 250 1.00 1,3-Dichloropropane ND 250 1.00 1,4-Dichlorobenzene ND 250 1.00 2,2-Dichloropropane ND 250 1.00 2-Chlorotoluene ND 250 1.00 2-Hexanone ND 2500 1.00 2-Nitropropane ND 500 1.00 4-Chlorotoluene ND 250 1.00 Acetone ND 5000 1.00 Acrylonitrile ND 1250 1.00 Benzene ND 100 1.00 Bromobenzene ND 250 1.00 Bromochloromethane ND 250 1.00 Bromodichloromethane ND 250 1.00 Bromoform ND 250 1.00 Bromomethane ND 500 1.00 Carbon Disulfide ND 500 1.00 Carbon Tetrachloride ND 250 1.00 Chlorobenzene ND 250 1.00 Chloroethane ND 250 1.00 Chloroform ND 250 1.00 Chloromethane ND 250 1.00 cis-1,2-Dichloroethene ND 250 1.00 cis-1,3-Dichloropropene ND 250 1.00 Cyclohexanone ND 2500 1.00 Dibromochloromethane ND 250 1.00 Dibromomethane ND 250 1.00 Dichlorodifluoromethane ND 250 1.00 Ethyl Acetate ND 500 1.00 Ethyl Ether ND 250 1.00 Ethylbenzene ND 250 1.00 Hexachlorobutadiene ND 250 1.00 Isobutanol ND 5000 1.00 Isopropylbenzene ND 250 1.00 Methyl Ethyl Ketone ND 500 1.00 Methyl Isobutyl Ketone ND 1250 1.00 Methylene Chloride ND 250 1.00 Methyl-tert-butyl ether (MTBE)ND 150 1.00 Naphthalene ND 250 1.00 n-Butyl Alcohol ND 12500 1.00 n-Butylbenzene ND 250 1.00 n-Propyl Benzene ND 250 1.00 Pentachloroethane ND 250 1.00 p-Isopropyltoluene ND 250 1.00 sec-Butyl Benzene ND 250 1.00 Styrene ND 250 1.00 tert-Butylbenzene ND 250 1.00 CtF WO#: 24L1007 www.ChemtechFord.com Page 52 of 67 QC Report for Work Order (WO) - 24L1007 % Rec RPD RPD Max MRL DFResultSpk ValueLimitsSource ConcAnalyte Leach Fluid Blank - EPA 8260D (cont.) QC Sample ID: BYL0912-LBK1 Batch: BYL0912 Date Prepared: 12/19/2024 Date Analyzed: 12/19/2024 Tetrachloroethene ND 250 1.00 Toluene ND 250 1.00 trans-1,2-Dichloroethene ND 250 1.00 trans-1,3-Dichloropropene ND 250 1.00 Trichloroethene ND 250 1.00 Trichlorofluoromethane ND 250 1.00 Vinyl Chloride ND 200 1.00 Xylenes, total ND 750 1.00 QC Sample ID: BYL1057-LBK1 Batch: BYL1057 Date Prepared: 12/23/2024 Date Analyzed: 12/23/2024 1,1,1,2-Tetrachloroethane ND 250 1.00 1,1,1-Trichloroethane ND 250 1.00 1,1,2,2-Tetrachloroethane ND 250 1.00 1,1,2-Trichloroethane ND 250 1.00 1,1,2-Trichlorotrifluoroethane ND 250 1.00 1,1-Dichloroethane ND 250 1.00 1,1-Dichloroethene ND 250 1.00 1,1-Dichloropropene ND 250 1.00 1,2,3-Trichlorobenzene ND 250 1.00 1,2,3-Trichloropropane ND 250 1.00 1,2,4-Trichlorobenzene ND 250 1.00 1,2,4-Trimethylbenzene ND 250 1.00 1,2-Dibromo-3-chloropropane ND 250 1.00 1,2-Dibromoethane (EDB)ND 250 1.00 1,2-Dichlorobenzene ND 250 1.00 1,2-Dichloroethane ND 250 1.00 1,2-Dichloropropane ND 250 1.00 1,3,5-Trimethylbenzene ND 250 1.00 1,3-Dichlorobenzene ND 250 1.00 1,3-Dichloropropane ND 250 1.00 1,4-Dichlorobenzene ND 250 1.00 2,2-Dichloropropane ND 250 1.00 2-Chlorotoluene ND 250 1.00 2-Hexanone ND 2500 1.00 2-Nitropropane ND 500 1.00 4-Chlorotoluene ND 250 1.00 Acetone ND 2500 1.00 Acrylonitrile ND 1250 1.00 Benzene ND 100 1.00 Bromobenzene ND 250 1.00 Bromochloromethane ND 250 1.00 Bromodichloromethane ND 250 1.00 Bromoform ND 250 1.00 Bromomethane ND 250 1.00 Carbon Disulfide ND 250 1.00 Carbon Tetrachloride ND 250 1.00 Chlorobenzene ND 250 1.00 Chloroethane ND 250 1.00 Chloroform ND 250 1.00 Chloromethane ND 250 1.00 CtF WO#: 24L1007 www.ChemtechFord.com Page 53 of 67 QC Report for Work Order (WO) - 24L1007 % Rec RPD RPD Max MRL DFResultSpk ValueLimitsSource ConcAnalyte Leach Fluid Blank - EPA 8260D (cont.) QC Sample ID: BYL1057-LBK1 Batch: BYL1057 Date Prepared: 12/23/2024 Date Analyzed: 12/23/2024 cis-1,2-Dichloroethene ND 250 1.00 cis-1,3-Dichloropropene ND 250 1.00 Cyclohexanone ND 2500 1.00 Dibromochloromethane ND 250 1.00 Dibromomethane ND 250 1.00 Dichlorodifluoromethane ND 250 1.00 Ethyl Acetate ND 500 1.00 Ethyl Ether ND 250 1.00 Ethylbenzene ND 250 1.00 Hexachlorobutadiene ND 250 1.00 Isobutanol ND 5000 1.00 Isopropylbenzene ND 250 1.00 Methyl Ethyl Ketone ND 500 1.00 Methyl Isobutyl Ketone ND 1250 1.00 Methylene Chloride ND 250 1.00 Methyl-tert-butyl ether (MTBE)ND 150 1.00 Naphthalene ND 250 1.00 n-Butyl Alcohol ND 12500 1.00 n-Butylbenzene ND 250 1.00 n-Propyl Benzene ND 250 1.00 Pentachloroethane ND 250 1.00 p-Isopropyltoluene ND 250 1.00 sec-Butyl Benzene ND 250 1.00 Styrene ND 250 1.00 tert-Butylbenzene ND 250 1.00 Tetrachloroethene ND 250 1.00 Toluene ND 250 1.00 trans-1,2-Dichloroethene ND 250 1.00 trans-1,3-Dichloropropene ND 250 1.00 Trichloroethene ND 250 1.00 Trichlorofluoromethane ND 250 1.00 Vinyl Chloride ND 200 1.00 Xylenes, total ND 250 1.00 QC Sample ID: BYL1057-LBK2 Batch: BYL1057 Date Prepared: 12/23/2024 Date Analyzed: 12/23/2024 1,1,1,2-Tetrachloroethane ND 250 1.00 1,1,1-Trichloroethane ND 250 1.00 1,1,2,2-Tetrachloroethane ND 250 1.00 1,1,2-Trichloroethane ND 250 1.00 1,1,2-Trichlorotrifluoroethane ND 250 1.00 1,1-Dichloroethane ND 250 1.00 1,1-Dichloroethene ND 250 1.00 1,1-Dichloropropene ND 250 1.00 1,2,3-Trichlorobenzene ND 250 1.00 1,2,3-Trichloropropane ND 250 1.00 1,2,4-Trichlorobenzene ND 250 1.00 1,2,4-Trimethylbenzene ND 250 1.00 1,2-Dibromo-3-chloropropane ND 250 1.00 1,2-Dibromoethane (EDB)ND 250 1.00 1,2-Dichlorobenzene ND 250 1.00 CtF WO#: 24L1007 www.ChemtechFord.com Page 54 of 67 QC Report for Work Order (WO) - 24L1007 % Rec RPD RPD Max MRL DFResultSpk ValueLimitsSource ConcAnalyte Leach Fluid Blank - EPA 8260D (cont.) QC Sample ID: BYL1057-LBK2 Batch: BYL1057 Date Prepared: 12/23/2024 Date Analyzed: 12/23/2024 1,2-Dichloroethane ND 250 1.00 1,2-Dichloropropane ND 250 1.00 1,3,5-Trimethylbenzene ND 250 1.00 1,3-Dichlorobenzene ND 250 1.00 1,3-Dichloropropane ND 250 1.00 1,4-Dichlorobenzene ND 250 1.00 2,2-Dichloropropane ND 250 1.00 2-Chlorotoluene ND 250 1.00 2-Hexanone ND 2500 1.00 2-Nitropropane ND 500 1.00 4-Chlorotoluene ND 250 1.00 Acetone ND 2500 1.00 Acrylonitrile ND 1250 1.00 Benzene ND 100 1.00 Bromobenzene ND 250 1.00 Bromochloromethane ND 250 1.00 Bromodichloromethane ND 250 1.00 Bromoform ND 250 1.00 Bromomethane ND 250 1.00 Carbon Disulfide ND 250 1.00 Carbon Tetrachloride ND 250 1.00 Chlorobenzene ND 250 1.00 Chloroethane ND 250 1.00 Chloroform ND 250 1.00 Chloromethane ND 250 1.00 cis-1,2-Dichloroethene ND 250 1.00 cis-1,3-Dichloropropene ND 250 1.00 Cyclohexanone ND 2500 1.00 Dibromochloromethane ND 250 1.00 Dibromomethane ND 250 1.00 Dichlorodifluoromethane ND 250 1.00 Ethyl Acetate ND 500 1.00 Ethyl Ether ND 250 1.00 Ethylbenzene ND 250 1.00 Hexachlorobutadiene ND 250 1.00 Isobutanol ND 5000 1.00 Isopropylbenzene ND 250 1.00 Methyl Ethyl Ketone ND 500 1.00 Methyl Isobutyl Ketone ND 1250 1.00 Methylene Chloride ND 250 1.00 Methyl-tert-butyl ether (MTBE)ND 150 1.00 Naphthalene ND 250 1.00 n-Butyl Alcohol ND 12500 1.00 n-Butylbenzene ND 250 1.00 n-Propyl Benzene ND 250 1.00 Pentachloroethane ND 250 1.00 p-Isopropyltoluene ND 250 1.00 sec-Butyl Benzene ND 250 1.00 Styrene ND 250 1.00 tert-Butylbenzene ND 250 1.00 Tetrachloroethene ND 250 1.00 CtF WO#: 24L1007 www.ChemtechFord.com Page 55 of 67 QC Report for Work Order (WO) - 24L1007 % Rec RPD RPD Max MRL DFResultSpk ValueLimitsSource ConcAnalyte Leach Fluid Blank - EPA 8260D (cont.) QC Sample ID: BYL1057-LBK2 Batch: BYL1057 Date Prepared: 12/23/2024 Date Analyzed: 12/23/2024 Toluene ND 250 1.00 trans-1,2-Dichloroethene ND 250 1.00 trans-1,3-Dichloropropene ND 250 1.00 Trichloroethene ND 250 1.00 Trichlorofluoromethane ND 250 1.00 Vinyl Chloride ND 200 1.00 Xylenes, total ND 250 1.00 Matrix Spike - EPA 8260D QC Sample ID: BYL0912-MS1 QC Source Sample: XXXXXXX-XXBatch: BYL0912 Date Prepared: 12/19/2024 Date Analyzed: 12/19/2024 1,1,1,2-Tetrachloroethane 91.7 70 - 130 45.8 ND 50.0 5.0 1.00 1,1,1-Trichloroethane 113 70 - 130 56.6 ND 50.0 5.0 1.00 1,1,2,2-Tetrachloroethane 98.8 70 - 130 49.4 ND 50.0 5.0 1.00 1,1,2-Trichloroethane 87.3 70 - 130 43.6 ND 50.0 5.0 1.00 1,1,2-Trichlorotrifluoroethane 91.9 70 - 130 46.0 ND 50.0 5.0 1.00 1,1-Dichloroethane 114 70 - 130 56.8 ND 50.0 5.0 1.00 1,1-Dichloroethene 103 70 - 130 51.6 ND 50.0 5.0 1.00 1,1-Dichloropropene 102 70 - 130 51.1 ND 50.0 5.0 1.00 1,2,3-Trichlorobenzene 78.6 70 - 130 39.3 ND 50.0 5.0 1.00 1,2,3-Trichloropropane 111 70 - 130 55.6 ND 50.0 5.0 1.00 1,2,4-Trichlorobenzene 97.9 70 - 130 49.0 ND 50.0 5.0 1.00 1,2,4-Trimethylbenzene 97.0 70 - 130 48.5 ND 50.0 5.0 1.00 1,2-Dibromo-3-chloropropane 83.6 70 - 130 41.8 ND 50.0 5.0 1.00 1,2-Dibromoethane (EDB)95.5 70 - 130 47.8 ND 50.0 5.0 1.00 1,2-Dichlorobenzene 95.1 70 - 130 47.6 ND 50.0 5.0 1.00 1,2-Dichloroethane 111 70 - 130 55.4 ND 50.0 5.0 1.00 1,2-Dichloropropane 96.3 70 - 130 48.2 ND 50.0 5.0 1.00 1,3,5-Trimethylbenzene 102 70 - 130 51.0 ND 50.0 5.0 1.00 1,3-Dichlorobenzene 103 70 - 130 51.6 ND 50.0 5.0 1.00 1,3-Dichloropropane 87.1 70 - 130 43.6 ND 50.0 5.0 1.00 1,4-Dichlorobenzene 97.4 70 - 130 48.7 ND 50.0 5.0 1.00 2,2-Dichloropropane 96.5 70 - 130 48.2 ND 50.0 5.0 1.00 2-Chlorotoluene 95.0 70 - 130 47.5 ND 50.0 5.0 1.00 2-Hexanone 70 - 130 ND ND 50.0 50.0 1.00 QM-RPD - The recovery was outside acceptance limits for the MS and/or MSD. The RPD between the MS and MSD was acceptable and indicates the recovery is due to matrix interference. The batch was accepted based on the acceptable recovery of the LCS and the RPD. 2-Nitropropane 184 70 - 130 184 ND 100 10.0 1.00 QM-RPD - The recovery was outside acceptance limits for the MS and/or MSD. The RPD between the MS and MSD was acceptable and indicates the recovery is due to matrix interference. The batch was accepted based on the acceptable recovery of the LCS and the RPD. 4-Chlorotoluene 104 70 - 130 51.8 ND 50.0 5.0 1.00 Acetone 87.9 70 - 130 440 ND 500 100 1.00 Acrylonitrile 111 70 - 130 277 ND 250 25.0 1.00 Benzene 105 70 - 130 52.6 ND 50.0 2.0 1.00 Bromobenzene 92.3 70 - 130 46.2 ND 50.0 5.0 1.00 Bromochloromethane 126 70 - 130 63.0 ND 50.0 5.0 1.00 Bromodichloromethane 105 70 - 130 52.3 ND 50.0 5.0 1.00 Bromoform 76.5 70 - 130 38.2 ND 50.0 5.0 1.00 Bromomethane 82.1 70 - 130 41.0 ND 50.0 10.0 1.00 Carbon Disulfide 109 70 - 130 54.7 ND 50.0 10.0 1.00 CtF WO#: 24L1007 www.ChemtechFord.com Page 56 of 67 QC Report for Work Order (WO) - 24L1007 % Rec RPD RPD Max MRL DFResultSpk ValueLimitsSource ConcAnalyte Matrix Spike - EPA 8260D (cont.) QC Sample ID: BYL0912-MS1 QC Source Sample: XXXXXXX-XXBatch: BYL0912 Date Prepared: 12/19/2024 Date Analyzed: 12/19/2024 Carbon Tetrachloride 86.3 70 - 130 43.2 ND 50.0 5.0 1.00 Chlorobenzene 97.9 70 - 130 49.0 ND 50.0 5.0 1.00 Chloroethane 112 70 - 130 56.2 ND 50.0 5.0 1.00 Chloroform 103 70 - 130 51.3 ND 50.0 5.0 1.00 Chloromethane 72.0 70 - 130 36.0 ND 50.0 5.0 1.00 cis-1,2-Dichloroethene 94.0 70 - 130 47.0 ND 50.0 5.0 1.00 cis-1,3-Dichloropropene 95.7 70 - 130 47.8 ND 50.0 5.0 1.00 Cyclohexanone 87.1 70 - 130 435 ND 500 50.0 1.00 Dibromochloromethane 83.1 70 - 130 41.6 ND 50.0 5.0 1.00 Dibromomethane 101 70 - 130 50.5 ND 50.0 5.0 1.00 Dichlorodifluoromethane 93.9 70 - 130 47.0 ND 50.0 5.0 1.00 Ethyl Acetate 97.1 70 - 130 97.1 ND 100 10.0 1.00 Ethyl Ether 86.2 70 - 130 43.1 ND 50.0 5.0 1.00 Ethylbenzene 92.7 70 - 130 46.4 ND 50.0 5.0 1.00 Hexachlorobutadiene 78.1 70 - 130 39.0 ND 50.0 5.0 1.00 Isobutanol 78.1 70 - 130 781 ND 1000 100 1.00 Isopropylbenzene 94.1 70 - 130 47.0 ND 50.0 5.0 1.00 Methyl Ethyl Ketone 86.2 70 - 130 43.1 ND 50.0 10.0 1.00 Methyl Isobutyl Ketone 69.9 70 - 130 35.0 ND 50.0 25.0 1.00 QM-RPD - The recovery was outside acceptance limits for the MS and/or MSD. The RPD between the MS and MSD was acceptable and indicates the recovery is due to matrix interference. The batch was accepted based on the acceptable recovery of the LCS and the RPD. Methylene Chloride 138 70 - 130 68.8 ND 50.0 5.0 1.00 QM-RPD - The recovery was outside acceptance limits for the MS and/or MSD. The RPD between the MS and MSD was acceptable and indicates the recovery is due to matrix interference. The batch was accepted based on the acceptable recovery of the LCS and the RPD. Methyl-tert-butyl ether (MTBE)94.5 70 - 130 47.2 ND 50.0 3.0 1.00 Naphthalene 75.5 70 - 130 37.8 ND 50.0 5.0 1.00 n-Butyl Alcohol 25.2 70 - 130 126 ND 500 250 1.00 J - Detected but below the Reporting Limit; therefore, result is an estimated concentration (CLP J-Flag). RPD-MSOut - The RPD between MS and MSD is outside established control limits. n-Butylbenzene 85.7 70 - 130 42.8 ND 50.0 5.0 1.00 n-Propyl Benzene 98.6 70 - 130 49.3 ND 50.0 5.0 1.00 Pentachloroethane 82.5 70 - 130 41.2 ND 50.0 5.0 1.00 p-Isopropyltoluene 102 70 - 130 51.2 ND 50.0 5.0 1.00 sec-Butyl Benzene 101 70 - 130 50.4 ND 50.0 5.0 1.00 Styrene 87.8 70 - 130 43.9 ND 50.0 5.0 1.00 tert-Butylbenzene 87.4 70 - 130 43.7 ND 50.0 5.0 1.00 Tetrachloroethene 86.3 70 - 130 43.2 ND 50.0 5.0 1.00 Toluene 100 70 - 130 50.0 ND 50.0 5.0 1.00 trans-1,2-Dichloroethene 98.2 70 - 130 49.1 ND 50.0 5.0 1.00 trans-1,3-Dichloropropene 93.3 70 - 130 46.6 ND 50.0 5.0 1.00 Trichloroethene 96.1 70 - 130 48.0 ND 50.0 5.0 1.00 Trichlorofluoromethane 107 70 - 130 53.4 ND 50.0 5.0 1.00 Vinyl Chloride 109 70 - 130 54.6 ND 50.0 4.0 1.00 Xylenes, total 96.2 70 - 130 144 ND 150 15.0 1.00 QC Sample ID: BYL1014-MS1 QC Source Sample: XXXXXXX-XXBatch: BYL1014 Date Prepared: 12/20/2024 Date Analyzed: 12/20/2024 1,1,1,2-Tetrachloroethane 90.4 70 - 130 45.2 ND 50.0 5.0 1.00 1,1,1-Trichloroethane 90.7 70 - 130 45.4 ND 50.0 5.0 1.00 1,1,2,2-Tetrachloroethane 107 70 - 130 53.7 ND 50.0 5.0 1.00 CtF WO#: 24L1007 www.ChemtechFord.com Page 57 of 67 QC Report for Work Order (WO) - 24L1007 % Rec RPD RPD Max MRL DFResultSpk ValueLimitsSource ConcAnalyte Matrix Spike - EPA 8260D (cont.) QC Sample ID: BYL1014-MS1 QC Source Sample: XXXXXXX-XXBatch: BYL1014 Date Prepared: 12/20/2024 Date Analyzed: 12/20/2024 1,1,2-Trichloroethane 76.1 70 - 130 38.0 ND 50.0 5.0 1.00 1,1,2-Trichlorotrifluoroethane 61.2 70 - 130 30.6 ND 50.0 5.0 1.00 MS-Low - Estimated low due to Matrix Spike recovery. 1,1-Dichloroethane 112 70 - 130 56.2 ND 50.0 5.0 1.00 1,1-Dichloroethene 101 70 - 130 50.4 ND 50.0 5.0 1.00 1,1-Dichloropropene 87.0 70 - 130 43.5 ND 50.0 5.0 1.00 1,2,3-Trichlorobenzene 73.3 70 - 130 36.6 ND 50.0 5.0 1.00 1,2,3-Trichloropropane 102 70 - 130 50.8 ND 50.0 5.0 1.00 1,2,4-Trichlorobenzene 83.0 70 - 130 41.5 ND 50.0 5.0 1.00 1,2,4-Trimethylbenzene 77.2 70 - 130 38.6 ND 50.0 5.0 1.00 1,2-Dibromo-3-chloropropane 94.1 70 - 130 47.0 ND 50.0 5.0 1.00 1,2-Dibromoethane (EDB)98.3 70 - 130 49.2 ND 50.0 5.0 1.00 1,2-Dichlorobenzene 89.3 70 - 130 44.6 ND 50.0 5.0 1.00 1,2-Dichloroethane 110 70 - 130 55.0 ND 50.0 5.0 1.00 1,2-Dichloropropane 96.7 70 - 130 48.4 ND 50.0 5.0 1.00 1,3,5-Trimethylbenzene 82.6 70 - 130 41.3 ND 50.0 5.0 1.00 1,3-Dichlorobenzene 94.5 70 - 130 47.2 ND 50.0 5.0 1.00 1,3-Dichloropropane 87.5 70 - 130 43.8 ND 50.0 5.0 1.00 1,4-Dichlorobenzene 96.5 70 - 130 48.2 ND 50.0 5.0 1.00 2,2-Dichloropropane 106 70 - 130 52.9 ND 50.0 5.0 1.00 2-Chlorotoluene 84.7 70 - 130 42.4 ND 50.0 5.0 1.00 2-Hexanone 70 - 130 ND ND 50.0 50.0 1.00 MS-Low - Estimated low due to Matrix Spike recovery. 2-Nitropropane 215 70 - 130 215 ND 100 10.0 1.00 HB - Recovery for this parameter exceeded the upper acceptance limit. Associated sample(s) were all non-detect and therefore accepted and reported for this parameter. 4-Chlorotoluene 90.2 70 - 130 45.1 ND 50.0 5.0 1.00 Acetone 113 70 - 130 564 ND 500 100 1.00 Acrylonitrile 113 70 - 130 284 ND 250 25.0 1.00 Benzene 92.9 70 - 130 46.4 ND 50.0 2.0 1.00 Bromobenzene 85.7 70 - 130 42.8 ND 50.0 5.0 1.00 Bromochloromethane 109 70 - 130 54.4 ND 50.0 5.0 1.00 Bromodichloromethane 96.5 70 - 130 48.2 ND 50.0 5.0 1.00 Bromoform 89.9 70 - 130 45.0 ND 50.0 5.0 1.00 Bromomethane 121 70 - 130 60.6 ND 50.0 10.0 1.00 Carbon Disulfide 108 70 - 130 54.2 ND 50.0 10.0 1.00 Carbon Tetrachloride 82.1 70 - 130 41.0 ND 50.0 5.0 1.00 Chlorobenzene 89.7 70 - 130 44.8 ND 50.0 5.0 1.00 Chloroethane 122 70 - 130 61.1 ND 50.0 5.0 1.00 Chloroform 90.4 70 - 130 45.2 ND 50.0 5.0 1.00 Chloromethane 73.1 70 - 130 36.6 ND 50.0 5.0 1.00 cis-1,2-Dichloroethene 94.0 70 - 130 47.0 ND 50.0 5.0 1.00 cis-1,3-Dichloropropene 89.2 70 - 130 44.6 ND 50.0 5.0 1.00 Cyclohexanone 98.7 70 - 130 493 ND 500 50.0 1.00 Dibromochloromethane 84.9 70 - 130 42.4 ND 50.0 5.0 1.00 Dibromomethane 91.0 70 - 130 45.5 ND 50.0 5.0 1.00 Dichlorodifluoromethane 75.3 70 - 130 37.6 ND 50.0 5.0 1.00 Ethyl Acetate 113 70 - 130 113 ND 100 10.0 1.00 Ethyl Ether 80.9 70 - 130 40.4 ND 50.0 5.0 1.00 Ethylbenzene 85.7 70 - 130 42.8 ND 50.0 5.0 1.00 Hexachlorobutadiene 61.6 70 - 130 30.8 ND 50.0 5.0 1.00 CtF WO#: 24L1007 www.ChemtechFord.com Page 58 of 67 QC Report for Work Order (WO) - 24L1007 % Rec RPD RPD Max MRL DFResultSpk ValueLimitsSource ConcAnalyte Matrix Spike - EPA 8260D (cont.) QC Sample ID: BYL1014-MS1 QC Source Sample: XXXXXXX-XXBatch: BYL1014 Date Prepared: 12/20/2024 Date Analyzed: 12/20/2024 QM-RPD - The recovery was outside acceptance limits for the MS and/or MSD. The RPD between the MS and MSD was acceptable and indicates the recovery is due to matrix interference. The batch was accepted based on the acceptable recovery of the LCS and the RPD. Isobutanol 88.0 70 - 130 880 ND 1000 100 1.00 Isopropylbenzene 87.2 70 - 130 43.6 ND 50.0 5.0 1.00 Methyl Ethyl Ketone 85.8 70 - 130 42.9 ND 50.0 10.0 1.00 Methyl Isobutyl Ketone 93.8 70 - 130 46.9 ND 50.0 25.0 1.00 Methylene Chloride 120 70 - 130 60.1 ND 50.0 5.0 1.00 Methyl-tert-butyl ether (MTBE)83.1 70 - 130 41.6 ND 50.0 3.0 1.00 Naphthalene 73.3 70 - 130 36.6 ND 50.0 5.0 1.00 n-Butyl Alcohol 46.1 70 - 130 230 ND 500 250 1.00 J - Detected but below the Reporting Limit; therefore, result is an estimated concentration (CLP J-Flag). MS-Low - Estimated low due to Matrix Spike recovery. n-Butylbenzene 68.3 70 - 130 34.2 ND 50.0 5.0 1.00 MS-Low - Estimated low due to Matrix Spike recovery. n-Propyl Benzene 80.1 70 - 130 40.0 ND 50.0 5.0 1.00 Pentachloroethane 82.2 70 - 130 41.1 ND 50.0 5.0 1.00 p-Isopropyltoluene 85.2 70 - 130 42.6 ND 50.0 5.0 1.00 sec-Butyl Benzene 76.8 70 - 130 38.4 ND 50.0 5.0 1.00 Styrene 87.6 70 - 130 43.8 ND 50.0 5.0 1.00 tert-Butylbenzene 78.2 70 - 130 39.1 ND 50.0 5.0 1.00 Tetrachloroethene 74.4 70 - 130 37.2 ND 50.0 5.0 1.00 Toluene 89.8 70 - 130 44.9 ND 50.0 5.0 1.00 trans-1,2-Dichloroethene 88.3 70 - 130 44.2 ND 50.0 5.0 1.00 trans-1,3-Dichloropropene 91.3 70 - 130 45.6 ND 50.0 5.0 1.00 Trichloroethene 93.8 70 - 130 46.9 ND 50.0 5.0 1.00 Trichlorofluoromethane 100 70 - 130 50.0 ND 50.0 5.0 1.00 Vinyl Chloride 96.6 70 - 130 48.3 ND 50.0 4.0 1.00 Xylenes, total 88.4 70 - 130 133 ND 150 15.0 1.00 QC Sample ID: BYL1057-MS1 QC Source Sample: XXXXXXX-XXBatch: BYL1057 Date Prepared: 12/23/2024 Date Analyzed: 12/23/2024 1,1,1,2-Tetrachloroethane 90.8 70 - 130 45.4 ND 50.0 5.0 1.00 1,1,1-Trichloroethane 93.2 70 - 130 46.6 ND 50.0 5.0 1.00 1,1,2,2-Tetrachloroethane 92.9 70 - 130 46.4 ND 50.0 5.0 1.00 1,1,2-Trichloroethane 84.9 70 - 130 42.4 ND 50.0 5.0 1.00 1,1,2-Trichlorotrifluoroethane 65.8 70 - 130 32.9 ND 50.0 5.0 1.00 QM-RPD - The recovery was outside acceptance limits for the MS and/or MSD. The RPD between the MS and MSD was acceptable and indicates the recovery is due to matrix interference. The batch was accepted based on the acceptable recovery of the LCS and the RPD. 1,1-Dichloroethane 106 70 - 130 53.1 ND 50.0 5.0 1.00 1,1-Dichloroethene 93.8 70 - 130 46.9 ND 50.0 5.0 1.00 1,1-Dichloropropene 87.6 70 - 130 43.8 ND 50.0 5.0 1.00 1,2,3-Trichlorobenzene 79.0 70 - 130 39.5 ND 50.0 5.0 1.00 1,2,3-Trichloropropane 96.2 70 - 130 48.1 ND 50.0 5.0 1.00 1,2,4-Trichlorobenzene 86.2 70 - 130 43.1 ND 50.0 5.0 1.00 1,2,4-Trimethylbenzene 84.6 70 - 130 42.3 ND 50.0 5.0 1.00 1,2-Dibromo-3-chloropropane 71.7 70 - 130 35.8 ND 50.0 5.0 1.00 1,2-Dibromoethane (EDB)93.3 70 - 130 46.6 ND 50.0 5.0 1.00 1,2-Dichlorobenzene 87.5 70 - 130 43.8 ND 50.0 5.0 1.00 1,2-Dichloroethane 103 70 - 130 51.4 ND 50.0 5.0 1.00 1,2-Dichloropropane 104 70 - 130 52.0 ND 50.0 5.0 1.00 CtF WO#: 24L1007 www.ChemtechFord.com Page 59 of 67 QC Report for Work Order (WO) - 24L1007 % Rec RPD RPD Max MRL DFResultSpk ValueLimitsSource ConcAnalyte Matrix Spike - EPA 8260D (cont.) QC Sample ID: BYL1057-MS1 QC Source Sample: XXXXXXX-XXBatch: BYL1057 Date Prepared: 12/23/2024 Date Analyzed: 12/23/2024 1,3,5-Trimethylbenzene 81.1 70 - 130 40.6 ND 50.0 5.0 1.00 1,3-Dichlorobenzene 93.5 70 - 130 46.8 ND 50.0 5.0 1.00 1,3-Dichloropropane 88.6 70 - 130 44.3 ND 50.0 5.0 1.00 1,4-Dichlorobenzene 84.4 70 - 130 42.2 ND 50.0 5.0 1.00 2,2-Dichloropropane 100 70 - 130 50.0 ND 50.0 5.0 1.00 2-Chlorotoluene 89.8 70 - 130 44.9 ND 50.0 5.0 1.00 2-Hexanone 70 - 130 ND ND 50.0 50.0 1.00 RPD-MSOut - The RPD between MS and MSD is outside established control limits. 2-Nitropropane 19.4 70 - 130 19.4 ND 100 10.0 1.00 MS-Low - Estimated low due to Matrix Spike recovery. 4-Chlorotoluene 77.9 70 - 130 39.0 ND 50.0 5.0 1.00 Acetone 89.1 70 - 130 446 ND 500 50.0 1.00 Acrylonitrile 117 70 - 130 294 ND 250 25.0 1.00 Benzene 100 70 - 130 50.0 ND 50.0 2.0 1.00 Bromobenzene 91.1 70 - 130 45.6 ND 50.0 5.0 1.00 Bromochloromethane 117 70 - 130 58.4 ND 50.0 5.0 1.00 Bromodichloromethane 104 70 - 130 51.8 ND 50.0 5.0 1.00 Bromoform 83.8 70 - 130 41.9 ND 50.0 5.0 1.00 Bromomethane 16.0 70 - 130 8.00 ND 50.0 5.0 1.00 QM-RPD - The recovery was outside acceptance limits for the MS and/or MSD. The RPD between the MS and MSD was acceptable and indicates the recovery is due to matrix interference. The batch was accepted based on the acceptable recovery of the LCS and the RPD. Carbon Disulfide 88.2 70 - 130 44.1 ND 50.0 5.0 1.00 Carbon Tetrachloride 74.9 70 - 130 37.4 ND 50.0 5.0 1.00 Chlorobenzene 90.6 70 - 130 45.3 ND 50.0 5.0 1.00 Chloroethane 81.0 70 - 130 40.5 ND 50.0 5.0 1.00 Chloroform 156 70 - 130 353 275 50.0 5.0 1.00 QM-4X - The spike recovery was outside of QC acceptance limits for the MS and/or MSD due to analyte concentration at 4 times or greater the spike concentration. The QC batch was accepted based on LCS and/or LCSD recoveries within the acceptance limits. Chloromethane 63.8 70 - 130 31.9 ND 50.0 5.0 1.00 QM-RPD - The recovery was outside acceptance limits for the MS and/or MSD. The RPD between the MS and MSD was acceptable and indicates the recovery is due to matrix interference. The batch was accepted based on the acceptable recovery of the LCS and the RPD. cis-1,2-Dichloroethene 98.9 70 - 130 49.4 ND 50.0 5.0 1.00 cis-1,3-Dichloropropene 86.8 70 - 130 43.4 ND 50.0 5.0 1.00 Cyclohexanone 76.7 70 - 130 384 ND 500 50.0 1.00 Dibromochloromethane 78.0 70 - 130 39.0 ND 50.0 5.0 1.00 Dibromomethane 88.6 70 - 130 44.3 ND 50.0 5.0 1.00 Dichlorodifluoromethane 63.7 70 - 130 31.8 ND 50.0 5.0 1.00 QM-RPD - The recovery was outside acceptance limits for the MS and/or MSD. The RPD between the MS and MSD was acceptable and indicates the recovery is due to matrix interference. The batch was accepted based on the acceptable recovery of the LCS and the RPD. Ethyl Acetate 94.2 70 - 130 94.2 ND 100 10.0 1.00 Ethyl Ether 82.0 70 - 130 41.0 ND 50.0 5.0 1.00 Ethylbenzene 77.6 70 - 130 38.8 ND 50.0 5.0 1.00 Hexachlorobutadiene 62.3 70 - 130 31.2 ND 50.0 5.0 1.00 QM-RPD - The recovery was outside acceptance limits for the MS and/or MSD. The RPD between the MS and MSD was acceptable and indicates the recovery is due to matrix interference. The batch was accepted based on the acceptable recovery of the LCS and the RPD. Isobutanol 79.5 70 - 130 795 ND 1000 100 1.00 Isopropylbenzene 88.4 70 - 130 44.2 ND 50.0 5.0 1.00 Methyl Ethyl Ketone 133 70 - 130 66.6 ND 50.0 10.0 1.00 CtF WO#: 24L1007 www.ChemtechFord.com Page 60 of 67 QC Report for Work Order (WO) - 24L1007 % Rec RPD RPD Max MRL DFResultSpk ValueLimitsSource ConcAnalyte Matrix Spike - EPA 8260D (cont.) QC Sample ID: BYL1057-MS1 QC Source Sample: XXXXXXX-XXBatch: BYL1057 Date Prepared: 12/23/2024 Date Analyzed: 12/23/2024 QM-010 - The MS recovery was outside acceptance limits but passed Duplicate Spike acceptance limits. The batch was accepted based on the acceptability of the MSD as the batch Spike. Methyl Isobutyl Ketone 54.5 70 - 130 27.2 ND 50.0 25.0 1.00 QM-RPD - The recovery was outside acceptance limits for the MS and/or MSD. The RPD between the MS and MSD was acceptable and indicates the recovery is due to matrix interference. The batch was accepted based on the acceptable recovery of the LCS and the RPD. Methylene Chloride 106 70 - 130 53.1 ND 50.0 5.0 1.00 Methyl-tert-butyl ether (MTBE)90.1 70 - 130 45.0 ND 50.0 3.0 1.00 Naphthalene 111 70 - 130 55.4 ND 50.0 5.0 1.00 n-Butyl Alcohol 40.1 70 - 130 200 ND 500 250 1.00 J - Detected but below the Reporting Limit; therefore, result is an estimated concentration (CLP J-Flag). RPD-MSOut - The RPD between MS and MSD is outside established control limits. n-Butylbenzene 75.0 70 - 130 37.5 ND 50.0 5.0 1.00 n-Propyl Benzene 80.6 70 - 130 40.3 ND 50.0 5.0 1.00 Pentachloroethane 80.4 70 - 130 40.2 ND 50.0 5.0 1.00 p-Isopropyltoluene 86.8 70 - 130 43.4 ND 50.0 5.0 1.00 sec-Butyl Benzene 68.3 70 - 130 34.2 ND 50.0 5.0 1.00 QM-010 - The MS recovery was outside acceptance limits but passed Duplicate Spike acceptance limits. The batch was accepted based on the acceptability of the MSD as the batch Spike. Styrene 89.5 70 - 130 44.8 ND 50.0 5.0 1.00 tert-Butylbenzene 80.6 70 - 130 40.3 ND 50.0 5.0 1.00 Tetrachloroethene 76.0 70 - 130 38.0 ND 50.0 5.0 1.00 Toluene 91.7 70 - 130 45.8 ND 50.0 5.0 1.00 trans-1,2-Dichloroethene 87.9 70 - 130 44.0 ND 50.0 5.0 1.00 trans-1,3-Dichloropropene 81.8 70 - 130 40.9 ND 50.0 5.0 1.00 Trichloroethene 88.2 70 - 130 44.1 ND 50.0 5.0 1.00 Trichlorofluoromethane 71.2 70 - 130 35.6 ND 50.0 5.0 1.00 Vinyl Chloride 73.6 70 - 130 36.8 ND 50.0 4.0 1.00 Xylenes, total 88.9 70 - 130 133 ND 150 5.0 1.00 Matrix Spike Dup - EPA 8260D QC Sample ID: BYL0912-MSD1 QC Source Sample: XXXXXXX-XXBatch: BYL0912 Date Prepared: 12/19/2024 Date Analyzed: 12/19/2024 1,1,1,2-Tetrachloroethane 91.2 0.547 70 - 130 20 45.6 ND 50.0 5.0 1.00 1,1,1-Trichloroethane 106 6.85 70 - 130 20 52.8 ND 50.0 5.0 1.00 1,1,2,2-Tetrachloroethane 91.5 7.67 70 - 130 20 45.8 ND 50.0 5.0 1.00 1,1,2-Trichloroethane 91.1 4.26 70 - 130 20 45.6 ND 50.0 5.0 1.00 1,1,2-Trichlorotrifluoroethane 82.2 11.1 70 - 130 20 41.1 ND 50.0 5.0 1.00 1,1-Dichloroethane 119 4.98 70 - 130 20 59.6 ND 50.0 5.0 1.00 1,1-Dichloroethene 106 2.20 70 - 130 20 52.8 ND 50.0 5.0 1.00 1,1-Dichloropropene 97.3 4.91 70 - 130 20 48.6 ND 50.0 5.0 1.00 1,2,3-Trichlorobenzene 82.0 4.23 70 - 130 20 41.0 ND 50.0 5.0 1.00 1,2,3-Trichloropropane 84.3 27.4 70 - 130 20 42.2 ND 50.0 5.0 1.00 RPD-01 - RPD between MS and MSD is outside established limits. Data is acceptable based on MS and MSD being within acceptable recovery limits. 1,2,4-Trichlorobenzene 84.7 14.5 70 - 130 20 42.4 ND 50.0 5.0 1.00 1,2,4-Trimethylbenzene 87.0 10.9 70 - 130 20 43.5 ND 50.0 5.0 1.00 1,2-Dibromo-3-chloropropane 88.6 5.81 70 - 130 20 44.3 ND 50.0 5.0 1.00 1,2-Dibromoethane (EDB)100 4.60 70 - 130 20 50.0 ND 50.0 5.0 1.00 1,2-Dichlorobenzene 97.8 2.80 70 - 130 20 48.9 ND 50.0 5.0 1.00 1,2-Dichloroethane 101 9.05 70 - 130 20 50.6 ND 50.0 5.0 1.00 1,2-Dichloropropane 102 5.75 70 - 130 20 51.0 ND 50.0 5.0 1.00 CtF WO#: 24L1007 www.ChemtechFord.com Page 61 of 67 QC Report for Work Order (WO) - 24L1007 % Rec RPD RPD Max MRL DFResultSpk ValueLimitsSource ConcAnalyte Matrix Spike Dup - EPA 8260D (cont.) QC Sample ID: BYL0912-MSD1 QC Source Sample: XXXXXXX-XXBatch: BYL0912 Date Prepared: 12/19/2024 Date Analyzed: 12/19/2024 1,3,5-Trimethylbenzene 88.8 13.8 70 - 130 20 44.4 ND 50.0 5.0 1.00 1,3-Dichlorobenzene 97.0 6.19 70 - 130 20 48.5 ND 50.0 5.0 1.00 1,3-Dichloropropane 84.7 2.79 70 - 130 20 42.4 ND 50.0 5.0 1.00 1,4-Dichlorobenzene 95.4 2.07 70 - 130 20 47.7 ND 50.0 5.0 1.00 2,2-Dichloropropane 98.6 2.15 70 - 130 20 49.3 ND 50.0 5.0 1.00 2-Chlorotoluene 97.5 2.60 70 - 130 20 48.8 ND 50.0 5.0 1.00 2-Hexanone 70 - 130 20 ND ND 50.0 50.0 1.00 QM-RPD - The recovery was outside acceptance limits for the MS and/or MSD. The RPD between the MS and MSD was acceptable and indicates the recovery is due to matrix interference. The batch was accepted based on the acceptable recovery of the LCS and the RPD. 2-Nitropropane 191 3.55 70 - 130 20 191 ND 100 10.0 1.00 QM-RPD - The recovery was outside acceptance limits for the MS and/or MSD. The RPD between the MS and MSD was acceptable and indicates the recovery is due to matrix interference. The batch was accepted based on the acceptable recovery of the LCS and the RPD. 4-Chlorotoluene 98.2 5.35 70 - 130 20 49.1 ND 50.0 5.0 1.00 Acetone 89.8 2.13 70 - 130 20 449 ND 500 100 1.00 Acrylonitrile 131 16.5 70 - 130 20 327 ND 250 25.0 1.00 QM-RPD - The recovery was outside acceptance limits for the MS and/or MSD. The RPD between the MS and MSD was acceptable and indicates the recovery is due to matrix interference. The batch was accepted based on the acceptable recovery of the LCS and the RPD. Benzene 98.9 6.17 70 - 130 20 49.4 ND 50.0 2.0 1.00 Bromobenzene 86.8 6.14 70 - 130 20 43.4 ND 50.0 5.0 1.00 Bromochloromethane 140 10.4 70 - 130 20 69.8 ND 50.0 5.0 1.00 QM-RPD - The recovery was outside acceptance limits for the MS and/or MSD. The RPD between the MS and MSD was acceptable and indicates the recovery is due to matrix interference. The batch was accepted based on the acceptable recovery of the LCS and the RPD. Bromodichloromethane 96.6 7.95 70 - 130 20 48.3 ND 50.0 5.0 1.00 Bromoform 80.4 4.97 70 - 130 20 40.2 ND 50.0 5.0 1.00 Bromomethane 106 25.6 70 - 130 20 53.1 ND 50.0 10.0 1.00 RPD-01 - RPD between MS and MSD is outside established limits. Data is acceptable based on MS and MSD being within acceptable recovery limits. Carbon Disulfide 108 1.38 70 - 130 20 54.0 ND 50.0 10.0 1.00 Carbon Tetrachloride 86.4 0.116 70 - 130 20 43.2 ND 50.0 5.0 1.00 Chlorobenzene 95.9 2.06 70 - 130 20 48.0 ND 50.0 5.0 1.00 Chloroethane 114 1.24 70 - 130 20 57.0 ND 50.0 5.0 1.00 Chloroform 101 1.67 70 - 130 20 50.4 ND 50.0 5.0 1.00 Chloromethane 76.2 5.67 70 - 130 20 38.1 ND 50.0 5.0 1.00 cis-1,2-Dichloroethene 99.7 5.89 70 - 130 20 49.8 ND 50.0 5.0 1.00 cis-1,3-Dichloropropene 93.3 2.54 70 - 130 20 46.6 ND 50.0 5.0 1.00 Cyclohexanone 58.5 39.2 70 - 130 20 293 ND 500 50.0 1.00 RPD-MSOut - The RPD between MS and MSD is outside established control limits. Dibromochloromethane 84.8 2.03 70 - 130 20 42.4 ND 50.0 5.0 1.00 Dibromomethane 98.5 2.51 70 - 130 20 49.2 ND 50.0 5.0 1.00 Dichlorodifluoromethane 93.4 0.534 70 - 130 20 46.7 ND 50.0 5.0 1.00 Ethyl Acetate 100 3.44 70 - 130 20 100 ND 100 10.0 1.00 Ethyl Ether 83.1 3.66 70 - 130 20 41.6 ND 50.0 5.0 1.00 Ethylbenzene 95.3 2.77 70 - 130 20 47.6 ND 50.0 5.0 1.00 Hexachlorobutadiene 93.9 18.4 70 - 130 20 47.0 ND 50.0 5.0 1.00 Isobutanol 66.1 16.7 70 - 130 20 661 ND 1000 100 1.00 QM-RPD - The recovery was outside acceptance limits for the MS and/or MSD. The RPD between the MS and MSD was acceptable and indicates the recovery is due to matrix interference. The batch was accepted based on the acceptable recovery of the LCS and the RPD. Isopropylbenzene 84.8 10.4 70 - 130 20 42.4 ND 50.0 5.0 1.00 CtF WO#: 24L1007 www.ChemtechFord.com Page 62 of 67 QC Report for Work Order (WO) - 24L1007 % Rec RPD RPD Max MRL DFResultSpk ValueLimitsSource ConcAnalyte Matrix Spike Dup - EPA 8260D (cont.) QC Sample ID: BYL0912-MSD1 QC Source Sample: XXXXXXX-XXBatch: BYL0912 Date Prepared: 12/19/2024 Date Analyzed: 12/19/2024 Methyl Ethyl Ketone 100 14.9 70 - 130 20 50.0 ND 50.0 10.0 1.00 Methyl Isobutyl Ketone 75.0 7.04 70 - 130 20 37.5 ND 50.0 25.0 1.00 Methylene Chloride 121 12.6 70 - 130 20 60.6 ND 50.0 5.0 1.00 Methyl-tert-butyl ether (MTBE)94.3 0.212 70 - 130 20 47.2 ND 50.0 3.0 1.00 Naphthalene 82.4 8.74 70 - 130 20 41.2 ND 50.0 5.0 1.00 n-Butyl Alcohol 41.5 48.7 70 - 130 20 207 ND 500 250 1.00 RPD-MSOut - The RPD between MS and MSD is outside established control limits. J - Detected but below the Reporting Limit; therefore, result is an estimated concentration (CLP J-Flag). n-Butylbenzene 85.3 0.468 70 - 130 20 42.6 ND 50.0 5.0 1.00 n-Propyl Benzene 89.5 9.68 70 - 130 20 44.8 ND 50.0 5.0 1.00 Pentachloroethane 67.6 19.9 70 - 130 20 33.8 ND 50.0 5.0 1.00 QM-RPD - The recovery was outside acceptance limits for the MS and/or MSD. The RPD between the MS and MSD was acceptable and indicates the recovery is due to matrix interference. The batch was accepted based on the acceptable recovery of the LCS and the RPD. p-Isopropyltoluene 92.3 10.5 70 - 130 20 46.2 ND 50.0 5.0 1.00 sec-Butyl Benzene 85.1 17.0 70 - 130 20 42.6 ND 50.0 5.0 1.00 Styrene 91.1 3.69 70 - 130 20 45.6 ND 50.0 5.0 1.00 tert-Butylbenzene 88.3 1.02 70 - 130 20 44.2 ND 50.0 5.0 1.00 Tetrachloroethene 80.1 7.45 70 - 130 20 40.0 ND 50.0 5.0 1.00 Toluene 94.4 5.76 70 - 130 20 47.2 ND 50.0 5.0 1.00 trans-1,2-Dichloroethene 93.9 4.48 70 - 130 20 47.0 ND 50.0 5.0 1.00 trans-1,3-Dichloropropene 97.3 4.20 70 - 130 20 48.6 ND 50.0 5.0 1.00 Trichloroethene 89.1 7.56 70 - 130 20 44.6 ND 50.0 5.0 1.00 Trichlorofluoromethane 105 2.08 70 - 130 20 52.3 ND 50.0 5.0 1.00 Vinyl Chloride 106 2.50 70 - 130 20 53.2 ND 50.0 4.0 1.00 Xylenes, total 100 4.07 70 - 130 20 150 ND 150 15.0 1.00 QC Sample ID: BYL1014-MSD1 QC Source Sample: XXXXXXX-XXBatch: BYL1014 Date Prepared: 12/20/2024 Date Analyzed: 12/20/2024 1,1,1,2-Tetrachloroethane 91.5 1.21 70 - 130 20 45.8 ND 50.0 5.0 1.00 1,1,1-Trichloroethane 108 17.1 70 - 130 20 53.8 ND 50.0 5.0 1.00 1,1,2,2-Tetrachloroethane 96.3 10.9 70 - 130 20 48.2 ND 50.0 5.0 1.00 1,1,2-Trichloroethane 83.1 8.79 70 - 130 20 41.6 ND 50.0 5.0 1.00 1,1,2-Trichlorotrifluoroethane 69.4 12.6 70 - 130 20 34.7 ND 50.0 5.0 1.00 MS-Low - Estimated low due to Matrix Spike recovery. 1,1-Dichloroethane 121 7.20 70 - 130 20 60.4 ND 50.0 5.0 1.00 1,1-Dichloroethene 107 6.35 70 - 130 20 53.6 ND 50.0 5.0 1.00 1,1-Dichloropropene 97.1 11.0 70 - 130 20 48.6 ND 50.0 5.0 1.00 1,2,3-Trichlorobenzene 80.8 9.73 70 - 130 20 40.4 ND 50.0 5.0 1.00 1,2,3-Trichloropropane 107 4.70 70 - 130 20 53.3 ND 50.0 5.0 1.00 1,2,4-Trichlorobenzene 91.6 9.85 70 - 130 20 45.8 ND 50.0 5.0 1.00 1,2,4-Trimethylbenzene 88.5 13.6 70 - 130 20 44.2 ND 50.0 5.0 1.00 1,2-Dibromo-3-chloropropane 112 17.1 70 - 130 20 55.8 ND 50.0 5.0 1.00 1,2-Dibromoethane (EDB)98.3 0.00 70 - 130 20 49.2 ND 50.0 5.0 1.00 1,2-Dichlorobenzene 96.3 7.54 70 - 130 20 48.2 ND 50.0 5.0 1.00 1,2-Dichloroethane 106 4.17 70 - 130 20 52.8 ND 50.0 5.0 1.00 1,2-Dichloropropane 90.6 6.51 70 - 130 20 45.3 ND 50.0 5.0 1.00 1,3,5-Trimethylbenzene 88.9 7.35 70 - 130 20 44.4 ND 50.0 5.0 1.00 1,3-Dichlorobenzene 91.3 3.44 70 - 130 20 45.6 ND 50.0 5.0 1.00 1,3-Dichloropropane 87.2 0.343 70 - 130 20 43.6 ND 50.0 5.0 1.00 1,4-Dichlorobenzene 95.9 0.624 70 - 130 20 48.0 ND 50.0 5.0 1.00 2,2-Dichloropropane 105 0.759 70 - 130 20 52.5 ND 50.0 5.0 1.00 CtF WO#: 24L1007 www.ChemtechFord.com Page 63 of 67 QC Report for Work Order (WO) - 24L1007 % Rec RPD RPD Max MRL DFResultSpk ValueLimitsSource ConcAnalyte Matrix Spike Dup - EPA 8260D (cont.) QC Sample ID: BYL1014-MSD1 QC Source Sample: XXXXXXX-XXBatch: BYL1014 Date Prepared: 12/20/2024 Date Analyzed: 12/20/2024 2-Chlorotoluene 92.9 9.23 70 - 130 20 46.4 ND 50.0 5.0 1.00 2-Hexanone 70 - 130 20 ND ND 50.0 50.0 1.00 MS-Low - Estimated low due to Matrix Spike recovery. RPD-MSOut - The RPD between MS and MSD is outside established control limits. 2-Nitropropane 70 - 130 20 ND ND 100 10.0 1.00 MS-Low - Estimated low due to Matrix Spike recovery. 4-Chlorotoluene 93.3 3.38 70 - 130 20 46.6 ND 50.0 5.0 1.00 Acetone 114 1.08 70 - 130 20 570 ND 500 100 1.00 Acrylonitrile 127 10.9 70 - 130 20 316 ND 250 25.0 1.00 Benzene 99.0 6.36 70 - 130 20 49.5 ND 50.0 2.0 1.00 Bromobenzene 84.8 1.06 70 - 130 20 42.4 ND 50.0 5.0 1.00 Bromochloromethane 123 12.3 70 - 130 20 61.6 ND 50.0 5.0 1.00 Bromodichloromethane 98.2 1.75 70 - 130 20 49.1 ND 50.0 5.0 1.00 Bromoform 95.2 5.73 70 - 130 20 47.6 ND 50.0 5.0 1.00 Bromomethane 80.1 40.9 70 - 130 20 40.0 ND 50.0 10.0 1.00 RPD-MSOut - The RPD between MS and MSD is outside established control limits. Carbon Disulfide 112 3.44 70 - 130 20 56.2 ND 50.0 10.0 1.00 Carbon Tetrachloride 82.3 0.243 70 - 130 20 41.2 ND 50.0 5.0 1.00 Chlorobenzene 100 11.2 70 - 130 20 50.2 ND 50.0 5.0 1.00 Chloroethane 105 15.3 70 - 130 20 52.4 ND 50.0 5.0 1.00 Chloroform 102 11.9 70 - 130 20 50.9 ND 50.0 5.0 1.00 Chloromethane 84.0 13.9 70 - 130 20 42.0 ND 50.0 5.0 1.00 cis-1,2-Dichloroethene 95.7 1.79 70 - 130 20 47.8 ND 50.0 5.0 1.00 cis-1,3-Dichloropropene 90.0 0.893 70 - 130 20 45.0 ND 50.0 5.0 1.00 Cyclohexanone 81.4 19.2 70 - 130 20 407 ND 500 50.0 1.00 Dibromochloromethane 91.8 7.81 70 - 130 20 45.9 ND 50.0 5.0 1.00 Dibromomethane 84.3 7.64 70 - 130 20 42.2 ND 50.0 5.0 1.00 Dichlorodifluoromethane 80.4 6.55 70 - 130 20 40.2 ND 50.0 5.0 1.00 Ethyl Acetate 98.0 13.8 70 - 130 20 98.0 ND 100 10.0 1.00 Ethyl Ether 96.4 17.5 70 - 130 20 48.2 ND 50.0 5.0 1.00 Ethylbenzene 92.4 7.52 70 - 130 20 46.2 ND 50.0 5.0 1.00 Hexachlorobutadiene 61.9 0.486 70 - 130 20 31.0 ND 50.0 5.0 1.00 QM-RPD - The recovery was outside acceptance limits for the MS and/or MSD. The RPD between the MS and MSD was acceptable and indicates the recovery is due to matrix interference. The batch was accepted based on the acceptable recovery of the LCS and the RPD. Isobutanol 84.5 4.05 70 - 130 20 845 ND 1000 100 1.00 Isopropylbenzene 90.1 3.27 70 - 130 20 45.0 ND 50.0 5.0 1.00 Methyl Ethyl Ketone 83.7 2.48 70 - 130 20 41.8 ND 50.0 10.0 1.00 Methyl Isobutyl Ketone 64.0 37.8 70 - 130 20 32.0 ND 50.0 25.0 1.00 RPD-MSOut - The RPD between MS and MSD is outside established control limits. MS-Low - Estimated low due to Matrix Spike recovery. Methylene Chloride 121 0.415 70 - 130 20 60.4 ND 50.0 5.0 1.00 Methyl-tert-butyl ether (MTBE)87.5 5.16 70 - 130 20 43.8 ND 50.0 3.0 1.00 Naphthalene 89.3 19.7 70 - 130 20 44.6 ND 50.0 5.0 1.00 n-Butyl Alcohol 51.6 11.2 70 - 130 20 258 ND 500 250 1.00 MS-Low - Estimated low due to Matrix Spike recovery. n-Butylbenzene 70.5 3.17 70 - 130 20 35.2 ND 50.0 5.0 1.00 n-Propyl Benzene 80.8 0.870 70 - 130 20 40.4 ND 50.0 5.0 1.00 Pentachloroethane 76.1 7.71 70 - 130 20 38.0 ND 50.0 5.0 1.00 p-Isopropyltoluene 90.0 5.48 70 - 130 20 45.0 ND 50.0 5.0 1.00 sec-Butyl Benzene 80.1 4.21 70 - 130 20 40.0 ND 50.0 5.0 1.00 CtF WO#: 24L1007 www.ChemtechFord.com Page 64 of 67 QC Report for Work Order (WO) - 24L1007 % Rec RPD RPD Max MRL DFResultSpk ValueLimitsSource ConcAnalyte Matrix Spike Dup - EPA 8260D (cont.) QC Sample ID: BYL1014-MSD1 QC Source Sample: XXXXXXX-XXBatch: BYL1014 Date Prepared: 12/20/2024 Date Analyzed: 12/20/2024 Styrene 89.0 1.59 70 - 130 20 44.5 ND 50.0 5.0 1.00 tert-Butylbenzene 86.0 9.50 70 - 130 20 43.0 ND 50.0 5.0 1.00 Tetrachloroethene 78.9 5.87 70 - 130 20 39.4 ND 50.0 5.0 1.00 Toluene 93.0 3.50 70 - 130 20 46.5 ND 50.0 5.0 1.00 trans-1,2-Dichloroethene 93.0 5.18 70 - 130 20 46.5 ND 50.0 5.0 1.00 trans-1,3-Dichloropropene 92.3 1.09 70 - 130 20 46.2 ND 50.0 5.0 1.00 Trichloroethene 95.9 2.21 70 - 130 20 48.0 ND 50.0 5.0 1.00 Trichlorofluoromethane 110 9.25 70 - 130 20 54.8 ND 50.0 5.0 1.00 Vinyl Chloride 99.2 2.66 70 - 130 20 49.6 ND 50.0 4.0 1.00 Xylenes, total 94.5 6.64 70 - 130 20 142 ND 150 15.0 1.00 QC Sample ID: BYL1057-MSD1 QC Source Sample: XXXXXXX-XXBatch: BYL1057 Date Prepared: 12/23/2024 Date Analyzed: 12/23/2024 1,1,1,2-Tetrachloroethane 88.1 3.02 70 - 130 20 44.0 ND 50.0 5.0 1.00 1,1,1-Trichloroethane 82.9 11.7 70 - 130 20 41.4 ND 50.0 5.0 1.00 1,1,2,2-Tetrachloroethane 103 10.5 70 - 130 20 51.6 ND 50.0 5.0 1.00 1,1,2-Trichloroethane 87.0 2.44 70 - 130 20 43.5 ND 50.0 5.0 1.00 1,1,2-Trichlorotrifluoroethane 63.7 3.24 70 - 130 20 31.8 ND 50.0 5.0 1.00 QM-RPD - The recovery was outside acceptance limits for the MS and/or MSD. The RPD between the MS and MSD was acceptable and indicates the recovery is due to matrix interference. The batch was accepted based on the acceptable recovery of the LCS and the RPD. 1,1-Dichloroethane 94.9 11.2 70 - 130 20 47.4 ND 50.0 5.0 1.00 1,1-Dichloroethene 80.2 15.6 70 - 130 20 40.1 ND 50.0 5.0 1.00 1,1-Dichloropropene 82.0 6.60 70 - 130 20 41.0 ND 50.0 5.0 1.00 1,2,3-Trichlorobenzene 78.8 0.253 70 - 130 20 39.4 ND 50.0 5.0 1.00 1,2,3-Trichloropropane 105 9.03 70 - 130 20 52.6 ND 50.0 5.0 1.00 1,2,4-Trichlorobenzene 94.2 8.87 70 - 130 20 47.1 ND 50.0 5.0 1.00 1,2,4-Trimethylbenzene 77.5 8.76 70 - 130 20 38.8 ND 50.0 5.0 1.00 1,2-Dibromo-3-chloropropane 85.7 17.8 70 - 130 20 42.8 ND 50.0 5.0 1.00 1,2-Dibromoethane (EDB)91.3 2.17 70 - 130 20 45.6 ND 50.0 5.0 1.00 1,2-Dichlorobenzene 85.7 2.08 70 - 130 20 42.8 ND 50.0 5.0 1.00 1,2-Dichloroethane 97.4 5.49 70 - 130 20 48.7 ND 50.0 5.0 1.00 1,2-Dichloropropane 89.8 14.7 70 - 130 20 44.9 ND 50.0 5.0 1.00 1,3,5-Trimethylbenzene 85.0 4.70 70 - 130 20 42.5 ND 50.0 5.0 1.00 1,3-Dichlorobenzene 91.1 2.60 70 - 130 20 45.6 ND 50.0 5.0 1.00 1,3-Dichloropropane 94.7 6.66 70 - 130 20 47.4 ND 50.0 5.0 1.00 1,4-Dichlorobenzene 89.5 5.87 70 - 130 20 44.8 ND 50.0 5.0 1.00 2,2-Dichloropropane 90.3 10.3 70 - 130 20 45.2 ND 50.0 5.0 1.00 2-Chlorotoluene 90.3 0.555 70 - 130 20 45.2 ND 50.0 5.0 1.00 2-Hexanone 91.5 67.0 70 - 130 20 45.8 ND 50.0 50.0 1.00 J - Detected but below the Reporting Limit; therefore, result is an estimated concentration (CLP J-Flag). RPD-MSOut - The RPD between MS and MSD is outside established control limits. 2-Nitropropane 70 - 130 20 ND ND 100 10.0 1.00 MS-Low - Estimated low due to Matrix Spike recovery. 4-Chlorotoluene 86.0 9.88 70 - 130 20 43.0 ND 50.0 5.0 1.00 Acetone 85.7 3.87 70 - 130 20 429 ND 500 50.0 1.00 Acrylonitrile 107 9.71 70 - 130 20 266 ND 250 25.0 1.00 Benzene 88.9 11.9 70 - 130 20 44.4 ND 50.0 2.0 1.00 Bromobenzene 89.1 2.22 70 - 130 20 44.6 ND 50.0 5.0 1.00 Bromochloromethane 110 5.91 70 - 130 20 55.0 ND 50.0 5.0 1.00 Bromodichloromethane 95.9 7.72 70 - 130 20 48.0 ND 50.0 5.0 1.00 Bromoform 78.9 6.02 70 - 130 20 39.4 ND 50.0 5.0 1.00 CtF WO#: 24L1007 www.ChemtechFord.com Page 65 of 67 QC Report for Work Order (WO) - 24L1007 % Rec RPD RPD Max MRL DFResultSpk ValueLimitsSource ConcAnalyte Matrix Spike Dup - EPA 8260D (cont.) QC Sample ID: BYL1057-MSD1 QC Source Sample: XXXXXXX-XXBatch: BYL1057 Date Prepared: 12/23/2024 Date Analyzed: 12/23/2024 Bromomethane 15.0 6.45 70 - 130 20 7.50 ND 50.0 5.0 1.00 QM-RPD - The recovery was outside acceptance limits for the MS and/or MSD. The RPD between the MS and MSD was acceptable and indicates the recovery is due to matrix interference. The batch was accepted based on the acceptable recovery of the LCS and the RPD. Carbon Disulfide 86.0 2.53 70 - 130 20 43.0 ND 50.0 5.0 1.00 Carbon Tetrachloride 75.0 0.133 70 - 130 20 37.5 ND 50.0 5.0 1.00 Chlorobenzene 87.4 3.60 70 - 130 20 43.7 ND 50.0 5.0 1.00 Chloroethane 70.6 13.7 70 - 130 20 35.3 ND 50.0 5.0 1.00 Chloroform 100 8.26 70 - 130 20 325 275 50.0 5.0 1.00 Chloromethane 56.0 13.0 70 - 130 20 28.0 ND 50.0 5.0 1.00 QM-RPD - The recovery was outside acceptance limits for the MS and/or MSD. The RPD between the MS and MSD was acceptable and indicates the recovery is due to matrix interference. The batch was accepted based on the acceptable recovery of the LCS and the RPD. cis-1,2-Dichloroethene 80.1 21.0 70 - 130 20 40.0 ND 50.0 5.0 1.00 RPD-01 - RPD between MS and MSD is outside established limits. Data is acceptable based on MS and MSD being within acceptable recovery limits. cis-1,3-Dichloropropene 92.1 5.93 70 - 130 20 46.0 ND 50.0 5.0 1.00 Cyclohexanone 73.7 4.04 70 - 130 20 368 ND 500 50.0 1.00 Dibromochloromethane 77.2 1.03 70 - 130 20 38.6 ND 50.0 5.0 1.00 Dibromomethane 86.2 2.75 70 - 130 20 43.1 ND 50.0 5.0 1.00 Dichlorodifluoromethane 60.1 5.82 70 - 130 20 30.0 ND 50.0 5.0 1.00 QM-RPD - The recovery was outside acceptance limits for the MS and/or MSD. The RPD between the MS and MSD was acceptable and indicates the recovery is due to matrix interference. The batch was accepted based on the acceptable recovery of the LCS and the RPD. Ethyl Acetate 85.6 9.68 70 - 130 20 85.6 ND 100 10.0 1.00 Ethyl Ether 65.1 23.0 70 - 130 20 32.6 ND 50.0 5.0 1.00 RPD-MSOut - The RPD between MS and MSD is outside established control limits. Ethylbenzene 90.0 14.8 70 - 130 20 45.0 ND 50.0 5.0 1.00 Hexachlorobutadiene 63.9 2.54 70 - 130 20 32.0 ND 50.0 5.0 1.00 QM-RPD - The recovery was outside acceptance limits for the MS and/or MSD. The RPD between the MS and MSD was acceptable and indicates the recovery is due to matrix interference. The batch was accepted based on the acceptable recovery of the LCS and the RPD. Isobutanol 66.6 17.5 70 - 130 20 666 ND 1000 100 1.00 QM-12 - The MSD recovery was outside acceptance limits, but passed duplicate spike acceptance criteria. The batch was accepted based on the acceptability of the MS. Isopropylbenzene 77.2 13.5 70 - 130 20 38.6 ND 50.0 5.0 1.00 Methyl Ethyl Ketone 117 13.3 70 - 130 20 58.4 ND 50.0 10.0 1.00 Methyl Isobutyl Ketone 54.9 0.731 70 - 130 20 27.4 ND 50.0 25.0 1.00 QM-RPD - The recovery was outside acceptance limits for the MS and/or MSD. The RPD between the MS and MSD was acceptable and indicates the recovery is due to matrix interference. The batch was accepted based on the acceptable recovery of the LCS and the RPD. Methylene Chloride 101 4.82 70 - 130 20 50.6 ND 50.0 5.0 1.00 Methyl-tert-butyl ether (MTBE)83.8 7.25 70 - 130 20 41.9 ND 50.0 3.0 1.00 Naphthalene 104 6.33 70 - 130 20 52.0 ND 50.0 5.0 1.00 n-Butyl Alcohol 29.7 29.7 70 - 130 20 148 ND 500 250 1.00 J - Detected but below the Reporting Limit; therefore, result is an estimated concentration (CLP J-Flag). RPD-MSOut - The RPD between MS and MSD is outside established control limits. n-Butylbenzene 74.4 0.803 70 - 130 20 37.2 ND 50.0 5.0 1.00 n-Propyl Benzene 82.1 1.84 70 - 130 20 41.0 ND 50.0 5.0 1.00 Pentachloroethane 75.2 6.68 70 - 130 20 37.6 ND 50.0 5.0 1.00 p-Isopropyltoluene 81.5 6.30 70 - 130 20 40.8 ND 50.0 5.0 1.00 sec-Butyl Benzene 80.4 16.3 70 - 130 20 40.2 ND 50.0 5.0 1.00 Styrene 82.2 8.50 70 - 130 20 41.1 ND 50.0 5.0 1.00 CtF WO#: 24L1007 www.ChemtechFord.com Page 66 of 67 QC Report for Work Order (WO) - 24L1007 % Rec RPD RPD Max MRL DFResultSpk ValueLimitsSource ConcAnalyte Matrix Spike Dup - EPA 8260D (cont.) QC Sample ID: BYL1057-MSD1 QC Source Sample: XXXXXXX-XXBatch: BYL1057 Date Prepared: 12/23/2024 Date Analyzed: 12/23/2024 tert-Butylbenzene 80.6 0.00 70 - 130 20 40.3 ND 50.0 5.0 1.00 Tetrachloroethene 67.2 12.3 70 - 130 20 33.6 ND 50.0 5.0 1.00 QM-12 - The MSD recovery was outside acceptance limits, but passed duplicate spike acceptance criteria. The batch was accepted based on the acceptability of the MS. Toluene 83.4 9.48 70 - 130 20 41.7 ND 50.0 5.0 1.00 trans-1,2-Dichloroethene 85.9 2.30 70 - 130 20 43.0 ND 50.0 5.0 1.00 trans-1,3-Dichloropropene 82.0 0.244 70 - 130 20 41.0 ND 50.0 5.0 1.00 Trichloroethene 72.6 19.4 70 - 130 20 36.3 ND 50.0 5.0 1.00 Trichlorofluoromethane 72.6 1.95 70 - 130 20 36.3 ND 50.0 5.0 1.00 Vinyl Chloride 66.0 10.9 70 - 130 20 33.0 ND 50.0 4.0 1.00 QM-12 - The MSD recovery was outside acceptance limits, but passed duplicate spike acceptance criteria. The batch was accepted based on the acceptability of the MS. Xylenes, total 84.3 5.31 70 - 130 20 126 ND 150 5.0 1.00 CtF WO#: 24L1007 www.ChemtechFord.com Page 67 of 67