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HomeMy WebLinkAboutDERR-2024-006822 LIMITED PHASE II ENVIRONMENTAL SITE ASSESSMENT Former Gas Station at South Washington Plaza 3965 South Washington Boulevard South Ogden, Weber County, Utah 84403 CMT PROJECT NO. 19219 FOR: MOUNTAIN CITY COMMERCIAL REAL ESTATE Attn: Mr. Brett Hendershot and Mr. Carl Holm 2036 Lincoln Avenue, Suite 101B Ogden, Utah 84401 SOUTH WASHINGTON PLAZA & ASSOCIATES, LC Attn: Mr. Craig R. Gasser 3441 100 East, Bountiful, Utah 84010 September 27, 2022 EN G I N E E R I N G  GE O T E C H N I C A L  GE 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 Phase II Environmental Site Assessment CMT Technical Services CMT Project 19219: Former Gas Station, South Ogden, UT September 27, 2022 v EXECUTIVE SUMMARY On behalf of Mountain City Commercial Real Estate (Mountain City), 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 business strip mall site, located on the northwest corner of the intersection of South Washington Boulevard (U.S. Highway 89) and 40 th Street/Chimes View Drive, at the listed address of 3965 South Washington Boulevard, South Ogden, Weber County, Utah. This report outlines the results from the LSI, which was requested in association with Mountain City’s interest in purchasing the property (hereafter referred to as the “Subject Property”). 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 assessment activities was to evaluate potential petroleum hydrocarbon impacts to soil and groundwater underneath the Property from the historic operation of a gasoline fueling station from approximately 1973 to 1981. The use of part of the Property as a fueling station could also represent a source of potential vapor migration and/or intrusion if related contamination is present in the subsurface. The entire Subject Property encompasses approximately 0.82 acres and is comprised of a single parcel with Weber County Parcel Number 05-134-0033. The Property is improved with a retail/commercial mini-strip mall with multiple tenants, associated asphalt-paved parking lots, associated landscaping, and drainage features. The Subject Property is currently owned by South Washington Plaza & Associates LC, a Utah limited company, and has owned the Property since 1983. The commercially-developed area of the Subject Property is currently occupied by the South Washington Shopping Plaza, constructed approximately in 1983. Project Background Partner Engineering and Science, Inc. (Partner) recently completed a Phase I ESA1 , for Wells Fargo Bank, dated August 25, 2022 for the Subject Property. Based on the observations, research, and interviews conducted while performing the Phase I ESA for the Property, Partner identified one potential recognized environmental condition (REC) in connection with the Subject Property, as defined by American Society of Testing and Materials (ASTM) Standard E1527-21. No historical RECs (HRECs) or controlled RECs (CRECs) were identified in connection 1 Partner, 2022. Phase I Environmental Site Assessment, Vista View LLC, 3965 Washington Boulevard, South Ogden, Utah 84403, August 25, 2022. Limited Phase II Environmental Site Assessment CMT Technical Services CMT Project 19219: Former Gas Station, South Ogden, UT September 27, 2022 vi with the Subject Property. A summary of historical background information and relevant findings from the Phase I ESA for the site is described below and in Section 1.2. During the Phase I investigation, Ninyo & Moore was made aware by the current property owner, Mr. Craig R. Gasser (Manager of South Washington Plaza & Associates, LC), that past uses of part of the Subject Property included a gasoline fueling station. According to Mr. Gasser, Albertsons Food Stores acquired the Subject Property and the adjoining property to the north in early 1983. At which time, the fueling station and the underground storage tanks (USTs) were possibly removed. Shortly after purchase, Albertsons began site work and construction of the adjoining building to the north. In November of 1983, the Subject Property was purchased from Albertsons for construction of the current retail building and the on-site parking lot was already completed at that time. To the best of the Mr. Gasser’s knowledge, the USTs were “likely removed around the time Albertson’s sold the property in 1983” and, “there has been no environmental study made during the time the seller has owned the property from 1983 to present”. Based on the length of time that the Subject Property had been utilized as a fuel station, and the absence of data confirming whether a release had occurred following the removal of any USTs, it is possible that petroleum hydrocarbons may have impacted the subsurface of the subject property. Therefore, the presence of the former fuel station and presumed storage of petroleum hydrocarbons in USTs is considered a REC and a potential Vapor Intrusion Condition (VEC). According to historical records, the Subject Property was occupied by a fueling station in the southeast property corner as early as 1973 to circa 1981. A 1982 topographic survey of the Subject Property vicinity depicted a small building with one dispenser island to the west and two dispenser islands to the east of the building. Two fuel tanks were depicted north of the tank and dispenser area. No information pertaining to the installation or removal dates, tank capacity, or construction details was available during the course of the Phase I assessment. Further, this fuel station was not listed in the regulatory database report and no records are on-file with the regulatory agencies. The former fuel system was located on the southeast side of Kiesel Avenue, a north-south roadway that was removed in the 1980s. City directory records for the address 3990 Kiesel Avenue, believed to be a historical Subject Property address, identified a Mister G’s Gas and Goodies for the year 1980. Based on the findings of the ESA, Partner recommended that additional investigation should be conducted in order to assess for potential impacts from the former fuel station on the Subject Property. Limited Phase II Environmental Site Assessment CMT Technical Services CMT Project 19219: Former Gas Station, South Ogden, UT September 27, 2022 vii Scope of Work In response to the findings presented in the Phase I ESA, CMT was contracted by Mountain City to conduct an LSI. The purpose of the LSI was to evaluate, characterize, and delineate the nature, source, and vertical extent (to the degree possible) of the identified REC on the Subject Property involving potential subsurface soil and groundwater contamination. On September 9, 2022, CMT submitted a Statement of Work for Limited Phase II Environmental Site Assessment proposal for the Subject Property. 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 and ground-penetrating radar (GPR);  Advancing seven (7) boreholes (B-1 through B-7) on the Subject Property;  Logging lithologies of soil collected during probing operations;  Analyzing selected soil and groundwater samples for selected contaminants of concern (COCs);  Preparing this report summarizing the assessment procedures and findings. CMT’s focus was on identifying the presence of any remaining underground structures (such as USTs or associated piping), evaluating whether potential impacts existed in the area of the former fueling station, and to determine if this area is acting as a source of, or if measured concentrations are caused by, migration of contaminants and associated vapors into the vicinity. Prior to conducting the site investigation, and at least 48 hours prior to arrival, Blue Stakes of Utah was notified to mark underground utilities at the site. Locations of other unmarked underground utilities and/or buried features were also scanned for using GPR. Site investigation work was performed on September 15, 2022. CMT had a subsurface scan of the Subject Property conducted in the southern parking lot of the Subject Property where the former fueling station was approximately located. The GPR scan indicated the presence of areas of disturbed soil located below the parking lot area consistent with two filled-in excavations measuring approximately 20 feet square, and one excavation approximately 80 feet long by 3 feet wide. No USTs or other extant structures were found. It is presumed that these excavations represent the USTs, station building, dispenser pumps, canopy footings, and piping. The utility scan indicated the presence of underground utilities around the proposed work area. The boring locations were situated to avoid these buried utilities. In order to evaluate the degree of potential soil and groundwater impacts to the Subject Property from the REC discussed above, a total of seven (7) shallow exploratory borings (B-1 through B-7) were advanced as close as Limited Phase II Environmental Site Assessment CMT Technical Services CMT Project 19219: Former Gas Station, South Ogden, UT September 27, 2022 viii possible to the presumed location of the historic fueling station structures, and where subsurface obstructions would allow. The presumed location of the eastern dispenser fell approximately 25 feet east of the parcel property line, so no boring was attempted there. The closest borehole location, B-7, was located immediately adjacent to the eastern property line on the approximate line of the station piping and near to the approximate middle dispenser location. CMT collected soil and groundwater samples from all seven of the borings. Each boring was located as follows:  Soil boring B-1 was completed on the north side of the presumed former location of the UST tankhold.  Soil boring B-2 was completed on the south side of the presumed former location of the UST tankhold.  Soil boring B-3 was completed on the west side of the presumed former location of the UST tankhold.  Soil boring B-4 was completed on the east side of the presumed former location of the UST tankhold.  Soil boring B-5 was completed near the approximate location of the western dispenser island.  Soil boring B-6 was completed south of the presumed former location of the fueling station building.  Soil boring B-7 was completed near the approximate location of the middle dispenser island, and adjacent to the eastern property line. Utilizing a GeoProbe™ 7822DT direct-push drill rig and hand tools, samples were collected to depths from the surface to 15 to 20 feet below ground surface (bgs), to evaluate the extent of potential petroleum hydrocarbon contamination. Approximate locations of the boring locations are shown in Figure 3 in Section 2.5.1. Sampling methods adhered to standard environmental sampling protocols. Fieldwork methodology is discussed further in Section 2.5. For soil boring logs, refer to Appendix A – Supporting Documentation. The soil samples collected from the site were transported following proper chain-of-custody procedures to Chemtech-Ford Laboratories of Sandy, Utah. The soil and groundwater samples were analyzed for the following selected COCs:  VOCs Full List by EPA Methods 8260D/5030A by Gas Chromatography/Mass Spectrometry (GC/MS);  Total Petroleum Hydrocarbons, Gasoline-Range Organics (TPH-GRO) Fractionation (C 5-C10) by EPA Method 8260D/5030A by GC/MS;  Total Petroleum Hydrocarbons, Diesel-Range Organics (TPH-DRO) (C 10-C28) by EPA Methods 8015C/3550B by Gas Chromatography/Flame Ionization Detector (GC/FID); Limited Phase II Environmental Site Assessment CMT Technical Services CMT Project 19219: Former Gas Station, South Ogden, UT September 27, 2022 ix Analytical Results Visual evidence of VOC contamination, such as staining, was observed as an approximately one to two-inch thick dark layer in all soil samples collected, and located consistently approximately six inches above the mean groundwater table. Olfactory evidence of hydrocarbon contamination was observed in multiple borings, particularly B-1, B-3, and B-5, with a strong petroleum odor. The presence of VOCs was indicated by photoionization detector (PID) measurements in all borings, with a maximum reading of 1,831 parts per million (ppm) in boring B-5 at a depth of 12 to 15 feet bgs. Based on field observations made by CMT, the geology is generally consistent across the Subject Property. The predominant subsurface lithology consisted of light brown to brown coarse to fine silty sands, sandy silts, and sandy silt and clay lenses. Groundwater was encountered during investigation activities in all borings at depths ranging between 11.5 and 18 feet bgs. Copies of the boring logs are provided in Appendix A – Supporting Documentation. Soil analytical results for VOC contamination were compared to the Utah Department of Environmental Quality (UDEQ) Initial Screening Levels (ISLs), as established by the Utah Underground Storage Tank (UST) Program (a regulatory branch of the UDEQ Division of Environmental Response and Remediation [DERR]). Of note, samples were not evaluated against the less-restrictive Tier 1 Screening Levels (SLs), as Tier 1 SLs 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. Soil analytical results were also evaluated against the EPA Regional Screening Levels (RSLs) for Industrial/Commercial Soil, with a Carcinogenic Screening Level of target cancer risk (TCR)=0.000001 (1E-06) and a target hazard quotient (THQ)=1.0. Groundwater analytical results were compared to the UDEQ ISLs, the EPA Maximum Contaminant Levels (MCLs), and the EPA Risk-Based Selective Screening Levels (SSLs) for protection of groundwater for VOCs. A summary of soil sample analytical data for VOCs is provided in Tables 2 and 3 of the attached data summary tables. Soil sampling result tables provide the applicable RSLs and ISLs, as well as the results from each sample and the depth at which each sample was taken. All results are listed in milligrams per kilogram (mg/kg), as specified in the laboratory report. Results with “ND <” are concentrations below the specified laboratory reporting limit (LRL), and results in bold are detections above the LRL. Results highlighted in pink are detections above the requisite RSL or CUL for the associated COC. The complete detailed laboratory analytical test results are included in the Appendix B - Analytical Data of this report. Limited Phase II Environmental Site Assessment CMT Technical Services CMT Project 19219: Former Gas Station, South Ogden, UT September 27, 2022 x Soil sample analytical results are summarized as:  All soil samples tested either below the LRLs, or the UDEQ ISLs or EPA RSLs for all VOCs. Concentrations of ethylbenzene, total xylenes, naphthalene, methyl tert-butyl ether (MTBE), 1,1,2-trichloroethane, 1,2,4-trimethylbenzene, 1,3,5-trimethylbenzene, p-isopropyl-toluene, acetone, isopropyl-benzene, methylene chloride, n-propyl benzene, and sec-butyl-benzene were detected but are all below ISLs or RSLs.  MTBE was detected in all of the seven soil samples. The maximum concentration of MTBE was 0.25 mg/kg in B2-11’. All concentrations of MTBE were below the EPA RSLs of 210 mg/kg for Commercial/Industrial soil and 47 mg/kg for Residential soil, and below the UDEQ ISL of 0.3 mg/kg.  TPH-GRO was detected in all soil samples except B7-16. All soil samples tested below the RSLs and ISLs for TPH-GRO. The maximum concentration of TPH-GRO was 24.6 mg/kg in B5-12’.  TPH-DRO was detected in three soil samples, B-1-12’, B-3-11’, and B-5-12’, with a maximum concentration of 516 mg/kg in B-3-11’ which exceeds the UDEQ ISL of 500 mg/kg. Groundwater sample analytical results are summarized as:  All groundwater samples tested either below the LRLs or below MCLs/ISLs for all VOCs.  Six VOC compounds were detected above LRLs, but do not have established MCls or UDEQ ISL: naphthalene, 1,2,4-trimethylbenzene, 1,3,5-trimethylbenzene, isopropylbenzene (cumene), n- propylbenzene, and sec-propylbenzene.  Four VOC compounds were detected above LRLs, at concentrations below their respective MCL or UDEQ ISLs: benzene, toluene, ethylbenzene, and total xylenes.  Benzene was detected in one sample, B3-W, with a concentration of 0.6 µg/L.  Toluene was detected in one sample, B3-W, with a concentration of 6.7 µg/L.  Ethylbenzene was detected in three samples, B3-W, B5-W, and B6-W, with concentrations of 1.4, 186, and 1.6 µg/L, respectively.  Total Xylenes was detected in three samples, B1-W, B3-W, and B5-W, with concentrations of 1.1, 23.2, and 50.2 µg/L, respectively.  Naphthalene was detected in two samples, B5-W and B6-W, with concentrations of 186 and 16.9 µg/L, respectively.  TPH-GRO was detected in every groundwater sample, with the exception of B7-W. Detections of TPH- GRO exceeded the UDEQ ISL of 1 mg/L in samples B1-W and B5-W with concentrations of 1.27 mg/L and 5.81 mg/L, respectively.  TPH-DRO was detected in only one groundwater sample, B5-W, at a concentration of 2.4 mg/L, exceeding the UDEQ ISL of 1 mg/L. The complete detailed laboratory analytical test results are included in the Appendix B - Analytical Data of this report. Limited Phase II Environmental Site Assessment CMT Technical Services CMT Project 19219: Former Gas Station, South Ogden, UT September 27, 2022 xi Conclusions Based on a review of the field and laboratory analytical data from the LSI, the following is summarized:  The GPR scan of the Subject Property found evidence for the former locations of the USTs, store, and dispenser pumps at the former fueling station that have since been removed. Soil disturbances were observed on the GPR survey, but the presence of extant USTs and piping at the site was not found.  MTBE was detected in all of the seven soil samples. All concentrations of MTBE were below the EPA RSLs for Commercial/Industrial soil for Residential soil, and below the UDEQ ISL.  TPH-GRO was detected in all soil samples except B7-16. All soil samples tested below the RSLs and ISLs for TPH-GRO.  TPH-DRO was detected in three soil samples, B-1-12’, B-3-11’, and B-5-12’, with a maximum concentration of 516 mg/kg in B-5-12’ which exceeds the UDEQ ISL of 500 mg/kg.  All groundwater samples tested either below the LRLs or below MCLs/ISLs for all VOCs.  TPH-GRO was detected in every groundwater sample, with the exception of B7-W. Detections of TPH- GRO exceeded the UDEQ ISL in samples B1-W and B5-W.  TPH-DRO was detected in only one groundwater sample, B5-W, exceeding the UDEQ ISL. In conclusion, petroleum hydrocarbons in the form of gasoline (TPH-GRO) and diesel (TPH-DRO) in groundwater pose a REC in connection with the Subject Property. The highest groundwater concentrations of gasoline, diesel, and VOCs were detected in the samples collected from the B-5 location, corresponding to the former western dispenser island. Concentrations of gasoline and diesel in groundwater exceed the UDEQ ISLs, but the concentrations of gasoline and diesel in the soil at these locations are lower. The levels of contamination in the soil and groundwater are not directly correlated. The concentration of diesel in B-3 soil is the only one that exceeds UDEQ ISLs. This suggests that contamination is primarily contained in the groundwater; the soil may not be a significant source of gasoline contamination. This interpretation could result if the western dispenser pump at B-5 leaked at some point during its operation. Product would have seeped down to the shallow groundwater. Natural groundwater flow would then disperse gasoline product around the area and downgradient. The diesel in soil detection at B-3 could be a remnant impact from the former USTs tankhold. The potential for migration or intrusion of hydrocarbon vapors into the current buildings is not known at this time due to the distance to the buildings from the source area (35-90 feet). The buildings are in the general direction of groundwater flow to the northwest. There is the potential that there is a plume leaving the source area and extending downgradient towards the retail businesses. Limited Phase II Environmental Site Assessment CMT Technical Services CMT Project 19219: Former Gas Station, South Ogden, UT September 27, 2022 xii Recommendations The following recommendations are based on the findings and conclusions presented in this report LSI and previous data obtained during the Phase I ESA. CMT recommends the following: 1. Characterization of the nature and extent of potential soil and groundwater impacts is needed as there is currently a data gap regarding remaining soil and groundwater contamination. Conduct additional characterization of the lateral and areal extent of soil and groundwater impacts, especially in the presumed downgradient direction to the northwest. Install additional soil borings to groundwater to collect samples from the soil column and groundwater table. 2. Install permanent downgradient groundwater monitoring wells to better gauge the impact to groundwater, and to determine the groundwater flow direction. 3. The potential health risk associated with the soil vapor concentrations detected during this investigation should be further evaluated with a Human Health Risk Assessment. 4. Consider entering the Voluntary Cleanup Program with Utah DEQ and pursue regulatory site closure. 5. Complete a focused feasibility study of appropriate remedial options and implement a remedial action for the cleanup of the site. The shallow groundwater and predominant silt and sand content observed in subsurface soils suggests groundwater extraction and treatment, with in situ chemical oxidation may be viable remedial techniques to consider. Remediation of VOCs in soil can be accomplished with localized excavations where elevated concentrations are determined to be present. Limited Phase II Environmental Site Assessment CMT Technical Services CMT Project 19219: Former Gas Station, South Ogden, UT September 27, 2022 xiii Table of Contents EXECUTIVE SUMMARY ............................................................................................................................................... v Project Background ............................................................................................................................................................. v Scope of Work ................................................................................................................................................................... vii Analytical Results ............................................................................................................................................................... ix Conclusions ........................................................................................................................................................................ xi Recommendations ............................................................................................................................................................ xii 1.0-INTRODUCTION .................................................................................................................................................. 13 1.1 General Site Location, Vicinity, and Description ......................................................................................................... 13 1.2 Site Recognized Environmental Conditions (RECs) ..................................................................................................... 13 1.3 Commonly Used Acronyms ......................................................................................................................................... 16 2.0-SCOPE OF WORK ................................................................................................................................................ 17 2.1 Objective ..................................................................................................................................................................... 17 2.2 Pre-Field Activities ....................................................................................................................................................... 17 2.3 Utility and Subsurface Scan ......................................................................................................................................... 17 2.4 Sample Locations and Designations ............................................................................................................................ 18 2.5 Sample Collection Procedures .................................................................................................................................... 19 2.5.1 Soil Sample Collection .......................................................................................................................................... 19 2.5.2 Groundwater Sample Collection .......................................................................................................................... 20 2.5.3 Documentation and Sample Custody ................................................................................................................... 21 2.6 Laboratory Analyses .................................................................................................................................................... 21 3.0-SOIL SAMPLING RESULTS .................................................................................................................................... 21 3.1 Field Observations ....................................................................................................................................................... 21 3.1.1 Site Geology ......................................................................................................................................................... 21 3.2 Analytical Data Results ................................................................................................................................................ 22 3.2.1 VOCs Full List ........................................................................................................................................................ 22 3.2.2 TPH-GRO and TPH-DRO ........................................................................................................................................ 26 4.0-GROUNDWATER SAMPLING RESULTS ................................................................................................................. 26 4.1 Field Observations ....................................................................................................................................................... 26 4.2 Analytical Data Results ................................................................................................................................................ 26 4.2.1 VOCs Full List ........................................................................................................................................................ 27 4.2.2 TPH-GRO and TPH-DRO ........................................................................................................................................ 31 5.0-CONCLUSIONS AND RECOMMENDATIONS .......................................................................................................... 31 5.1 Conclusions ................................................................................................................................................................. 31 5.2 Recommendations ...................................................................................................................................................... 32 6.0- LIMITATIONS ..................................................................................................................................................... 33 7.0-CLOSURE ............................................................................................................................................................ 34 8.0-REFERENCES ....................................................................................................................................................... 34 Limited Phase II Environmental Site Assessment CMT Technical Services CMT Project 19219: Former Gas Station, South Ogden, UT September 27, 2022 xiv FIGURES Figure 1: Vicinity Map Figure 2: Site Parcel Map Figure 3: Soil Sample Locations Map TABLES Table 1: Boring and Sample Locations Summary Table 2: Soil Analytical Results for VOCs (BTEXN Compounds) Table 3: Soil Analytical Results for VOCs (Full List) Table 4: Soil Analytical Results for TPH-GRO and TPH-DRO Table 5: Groundwater Analytical Results for VOCs (BTEXN Compounds) Table 6: Groundwater Analytical Results for VOCs (Full List) Table 7: Groundwater Analytical Results for TPH-GRO and TPH-DRO APPENDICES Appendix A: Supporting Documentation UDEQ Initial Screening Levels and Tier 1 Screening Criteria EPA Regional Screening Levels (RSL) Summary Table, November 2021 Soil Boring Logs (B-1 through B-7) Appendix B: Analytical Data Detailed Laboratory Soil Analytical Reports – Chemtech-Ford Laboratories Detailed Laboratory Groundwater Analytical Reports – Chemtech-Ford Laboratories Limited Phase II Environmental Site Assessment CMT Technical Services CMT Project 19219: Former Gas Station, South Ogden, UT September 27, 2022 13 1.0-INTRODUCTION CMT Technical Services (CMT) was retained by Mountain City Commercial Real Estate (Mountain City) to conduct a Limited Subsurface Investigation (LSI) Phase II Environmental Site Assessment (ESA) for part of a commercial business strip mall site. This report outlines the results from the LSI, which was requested in association with Mountain City’s interest in purchasing the property (hereafter referred to as the “Subject Property”). This report includes discussions concerning CMT’s investigative methods, the scope of work performed, and the analytical results of the collected samples. 1.1 General Site Location, Vicinity, and Description The Subject Property is located on the northwest corner of the intersection of South Washington Boulevard (U.S. Highway 89) and 40th Street/Chimes View Drive, at the listed address of 3965 South Washington Boulevard, South Ogden, Weber County, Utah. The entire Subject Property encompasses approximately 0.82 acres and is comprised of a single parcel with Weber County Parcel Number 05-134-0033. The Subject Property is currently owned by South Washington Plaza & Associates LC, a Utah limited company, which has owned the Property since 1983. The commercially-developed area of the Subject Property is currently occupied by the South Washington Plaza, constructed in approximately 1983. The Property is improved with a retail/commercial mini-strip mall with multiple tenants, associated asphalt-paved parking lots, associated landscaping, and drainage features. Surrounding properties are primarily commercial businesses and residential developments. The Subject Property is found at Latitude: 41.19100883° North and Longitude: 111.97255905° West. The location of the Subject Property is shown on Figure 1, on the next page. 1.2 Site Recognized Environmental Conditions (RECs) Partner Engineering and Science, Inc. (Partner) recently completed a Phase I ESA2 , for Wells Fargo Bank, dated August 25, 2022 for the Subject Property. Based on the observations, research, and interviews conducted while performing the Phase I ESA for the Property, Partner identified one potential recognized environmental condition (REC) in connection with the Subject Property, as defined by American Society of Testing and Materials 2 Partner, 2022. Phase I Environmental Site Assessment, Vista View LLC, 3965 Washington Boulevard, South Ogden, Utah 84403, August 25, 2022. Limited Phase II Environmental Site Assessment CMT Technical Services CMT Project 19219: Former Gas Station, South Ogden, UT September 27, 2022 14 (ASTM) Standard E1527-21. No historical RECs (HRECs) or controlled RECs (CRECs) were identified in connection with the Subject Property. A summary of historical background information and relevant findings from the Phase I ESA for the site is described below. FIGURE 1, VICINITY MAP During the Phase I investigation, Partner was made aware by the current property owner, Mr. Craig Gasser (Manager of South Washington Plaza & Associates LC), that past uses of part of the Subject Property included a gasoline fueling station. According to Mr. Gasser, Albertsons Food Stores acquired the Subject Property and the adjoining property to the north in early 1983. At which time, the fueling station and the underground storage tanks (USTs) were possibly removed. Shortly after purchase, Albertsons began site work and construction of the adjoining building to the north. In November of 1983, the Subject Property was purchased from Albertsons for construction of the current retail building and the on-site parking lot was already completed at that time. To the best of the Mr. Gasser’s knowledge, the USTs were “likely removed around the time Albertson’s sold the property in 1983” and, “there has been no environmental study made during the time the seller has owned the property from 1983 to present”. Based on the length of time that the Subject Property had been utilized as a fuel station, and the absence of data confirming whether a release had occurred following the removal of any USTs, it is possible that petroleum hydrocarbons may have impacted the subsurface of the subject property. Therefore, the presence of the former fuel station and presumed storage of petroleum hydrocarbons in USTs is considered a REC and a potential Vapor Intrusion Condition (VEC). Subject Property Wa s h i n g t o n B l v d ( U . S . 8 9 ) 40th Street Limited Phase II Environmental Site Assessment CMT Technical Services CMT Project 19219: Former Gas Station, South Ogden, UT September 27, 2022 15 According to historical records, the Subject Property was occupied by a fueling station in the southeast property corner as early as 1973 to circa 1981. A 1982 topographic survey of the Subject Property vicinity depicted a small building with one dispenser island to the west and two dispenser islands to the east of the building. Two fuel tanks were depicted north of the tank and dispenser area. No information pertaining to the installation or removal dates, tank capacity, or construction details was available during the course of the Phase I assessment. Further, this fuel station was not listed in the regulatory database report and no records are on-file with the regulatory agencies. The former fuel system was located on the southeast side of Kiesel Avenue, a north-south roadway that was removed in the 1980s. City directory records for the address 3990 Kiesel Avenue, believed to be a historical Subject Property address, identified a Mister G’s Gas and Goodies for the year 1980. Based on the findings of the ESA, Partner recommended that additional investigation should be conducted in order to assess for potential impacts from the former fuel station on the Subject Property. The approximate boundaries of parcels, the entire Subject Property (in red), and the smaller area of assessment (in blue/purple) where the former fueling station is believed to have been located, are shown on Figure 2 below. FIGURE 2, SITE PARCEL MAP Planet Fitness Approx. Parcel Boundaries N Ramz Auto Wa s h i n g t o n B l v d ( U . S . 8 9 ) 40th Street (400 South) E 39th Street Retail Strip Mall Former Fueling Station Area Limited Phase II Environmental Site Assessment CMT Technical Services CMT Project 19219: Former Gas Station, South Ogden, UT September 27, 2022 16 1.3 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. ASTM American Society of Testing and Materials bgs below ground surface BTEXN benzene, toluene, ethyl benzene, xylenes, and naphthalene CMT CMT Technical Services, Inc. COC contaminant of concern CREC Controlled Recognized Environmental Condition DERR Division of Environmental Response and Remediation (UDEQ) DPS Direct Push Services, Inc. EPA United States Environmental Protection Agency ESA Environmental Site Assessment GC/MS Gas Chromatography/Mass Spectrometer GC/FID Gas Chromatography/Flame Ionization Detector GPR ground penetrating radar LDPE high-density polyethylene HREC Historic Recognized Environmental Condition LRL laboratory reporting limit LSI Limited Subsurface Investigation mg/kg milligrams per kilogram mg/L milligrams per liter mL milliliter Mountain City Mountain City Commercial Real Estate ND < Not Detected (result lower than given laboratory reporting limit) NE regulatory limit is Not Established PID photoionization detector ppm parts per million REC Recognized Environmental Condition (as defined in ASTM Standard E1527-21) RSL EPA Regional Screening Level sq. ft. square feet TCR Target Cancer Risk THQ Target Hazard Quotient TPH-DRO Total Petroleum Hydrocarbons, Diesel-Range Organics TPH-GRO Total Petroleum Hydrocarbons, Gasoline-Range Organics µg/L micrograms per liter UDEQ Utah Department of Environmental Quality USCS Unified Soil Classification System UST underground storage tank VEC Vapor Intrusion Condition VOA volatile organic analysis VOC volatile organic compound Limited Phase II Environmental Site Assessment CMT Technical Services CMT Project 19219: Former Gas Station, South Ogden, UT September 27, 2022 17 2.0-SCOPE OF WORK 2.1 Objective The purpose and objective of the LSI assessment activities was to evaluate the shallow subsurface for potential petroleum hydrocarbon impacts to soil and groundwater underneath the Property from the historic operation of a gasoline fueling station from approximately 1973 to 1981, identified as potentially existing on the Subject Property during the Phase I ESA. The use of part of the Property as a fueling station could also represent a source of potential vapor migration and/or intrusion if related contamination is present in the subsurface. To accomplish this objective, samples of the shallow subsurface soils and soil gas were collected for analysis to determine the presence or absence of the selected contaminants of concern (COCs). CMT’s focus was on identifying the presence of any remaining underground structures (such as USTs or associated piping), evaluating whether potential impacts existed in the area of the former fueling station, and to determine if this area is acting as a source of, or if measured concentrations are caused by, migration of contaminants and associated vapors into the vicinity. 2.2 Pre-Field Activities One week prior to the start of field activities, CMT contacted Blue Stakes of Utah one-call to identify, locate, and mark all underground public utilities around and within the Subject Property assessment. 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. 2.3 Utility and Subsurface Scan CMT contracted with Chad Russell of Direct Push Services, Inc. (DPS) to conduct a subsurface scan of the Subject Property utilizing utility-sensing equipment, a magnetometer, and ground-penetrating radar (GPR) to attempt to locate and identify any buried structures or unmarked underground utilities that may exist on the premises. CMT had the subsurface scan of the conducted in the southern parking lot of the Subject Property where the former fueling station was approximately located. This scan also searched for any potential buried USTs that may still exist on the Subject Property premises. Site investigation work was performed on September 15, 2022 before drilling activities commenced. The GPR scan indicated the presence of areas of disturbed soil located below the parking lot area consistent with two filled- in excavations measuring approximately 20 feet square, and one excavation approximately 80 feet long by three Limited Phase II Environmental Site Assessment CMT Technical Services CMT Project 19219: Former Gas Station, South Ogden, UT September 27, 2022 18 feet wide. No USTs or other extant structures were found. It is presumed that these excavations represent the USTs, station building, dispenser pumps, canopy footings, and piping. The utility scan also indicated the presence of underground utilities around the proposed work area. The boring locations were situated to avoid these buried utilities. 2.4 Sample Locations and Designations In order to evaluate the degree of potential soil and groundwater impacts to the Subject Property from the REC discussed above, a total of seven (7) shallow exploratory borings (B-1 through B-7) were advanced as close as possible to the presumed location of the historic fueling station structures, and where subsurface obstructions would allow. The presumed location of the eastern dispenser fell approximately 25 feet east of the parcel property line, so no boring was attempted there. The closest borehole location, B-7, was located immediately adjacent to the eastern property line on the approximate line of the station piping and near to the approximate middle dispenser location. CMT collected soil and groundwater samples from all seven of the borings. Each boring was located as follows:  Soil boring B-1 was completed on the north side of the presumed former location of the UST tankhold.  Soil boring B-2 was completed on the west side of the presumed former location of the UST tankhold.  Soil boring B-3 was completed on the east side of the presumed former location of the UST tankhold.  Soil boring B-4 was completed on the south side of the presumed former location of the UST tankhold.  Soil boring B-5 was completed near the approximate location of the western dispenser island.  Soil boring B-6 was completed south of the presumed former location of the fueling station building.  Soil boring B-7 was completed near the approximate location of the middle dispenser island, and adjacent to the eastern property line. The Table 1 below lists soil boring and locations data. The approximate locations of the soil boring sampling locations are shown in Figure 3 on the next page. TABLE 1 – BORING AND SAMPLE LOCATIONS SUMMARY BORING # LOCATION TOTAL DEPTH SAMPLE DEPTH DEPTH TO WATER APPROXIMATE GPS LOCATION B-1 North of former UST tankhold. 15’ 12’ 12.5’ 41.190987° N 111.972392° W B-2 West of former UST tankhold. 15’ 11’ 11.5’ 41.190950° N 111.972433° W B-3 East of former UST tankhold. 15’ 11’ 11.5’ 41.190953° N 111.972329° W B-4 South of former UST tankhold. 15’ 12’ 13’ 41.190921° N 111.972387° W B-5 Former western dispenser area. 15’ 12’ 12’ 41.190831° N 111.972468° W B-6 South of former building area. 20’ 18’ 13’ 41.190805° N 111.972369° W B-7 Former middle dispenser area. 20’ 16’ 16.25’ 41.190832° N 111.972275° W Limited Phase II Environmental Site Assessment CMT Technical Services CMT Project 19219: Former Gas Station, South Ogden, UT September 27, 2022 19 FIGURE 3, SOIL SAMPLE LOCATIONS MAP 2.5 Sample Collection Procedures 2.5.1 Soil Sample Collection On September 15, 2022, an environmental professional from CMT supervised DPS, a State of Utah-certified drilling company, during field sampling activities. Drilling 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 soil boring was continuously sampled using a Macro Sampler equipped with an acetate sleeve for lithologic observation and sampling. Each soil boring was advanced to either the depth of encountered groundwater or the depth of refusal. The seven boreholes were drilled to depths from the surface to between 15 and 20 feet below ground surface (bgs). Utilizing clean hand tools, samples were all collected in native soils that had not been disturbed by construction or development activity. Sampling methods adhered to standard environmental sampling protocols. The soil samples were collected by hand, wearing new nitrile gloves, or using decontaminated hand tools. Portions of each four- or five-foot Macro Sampler were sealed and labeled in a Zip-Loc™-type plastic bag. The sealed bags were allowed to sit in the direct sunlight, where the VOC concentrations were allowed to equilibrate within the headspace of each bag. A photoionization detector (PID) was used to monitor soils for evidence of volatile organic compound (VOC) vapors to evaluate the extent of potential petroleum hydrocarbon contamination. After approximately five Wa s h i n g t o n B l v d ( U . S . 8 9 ) B-5 B-6 B-2 B-1 B-4 B-7 B-3 Former USTs Former Building Former Dispensers and trench Former Fueling Station Boundary Soil Borings Approx. Parcel Boundaries Retail Strip Mall N Limited Phase II Environmental Site Assessment CMT Technical Services CMT Project 19219: Former Gas Station, South Ogden, UT September 27, 2022 20 minutes, the headspace inside each bag was screened with a portable PID. Field identification of impact was based on staining, odor, and/or PID reading. One soil sample for laboratory analysis was collected from each borehole. The exact depth of each sample varied per borehole and was based on visual field observations, odor, and/or PID measurements. Soil samples collected for laboratory analysis were placed into two laboratory-provided, four-ounce clear glass jars with Teflon-lined lids. 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 soil samples were not collected. Each soil sample set was placed into an ice-chilled cooler for transport and hand-delivered, under chain-of-custody, to Chemtech-Ford Laboratories of Sandy, Utah, a Utah-certified laboratory, for chemical analysis. Soils encountered were field logged and classified by a CMT 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. 2.5.2 Groundwater Sample Collection 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 between each boring. A disposable, ¼-inch diameter low-density polyethylene (LDPE) tubing was inserted through the steel well screen. Groundwater samples were collected into lab-provided bottles using low-flow techniques. Groundwater was pumped out using a Geotech™ Series II Peristaltic Pump until residual silt decreased and the water became clear. One groundwater sample for laboratory analysis was collected from each borehole. Groundwater samples collected for laboratory analysis were placed into six laboratory-provided, 40-milliliter (mL) clear glass volatile organic analysis (VOA) vials with Teflon-lined lids and hydrochloric acid 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. Field duplicate groundwater samples were not collected. Each sample set was placed into an ice-chilled cooler for delivery, under chain-of-custody, to Chemtech-Ford Laboratories of Sandy, Utah for chemical analysis. 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 concrete and smoothed to Limited Phase II Environmental Site Assessment CMT Technical Services CMT Project 19219: Former Gas Station, South Ogden, UT September 27, 2022 21 match the pre-existing surface. Borehole logs describing lithologies encountered during sampling are shown in the soil boring logs in Appendix A – Supporting Documentation. 2.5.3 Documentation and Sample Custody All samples were transported and delivered with an appropriately-completed chain-of-custody record. Sample chain-of-custody procedures were followed to account for each sample during collection, storage, handling, and shipping activities. When transferring sample possession, the persons relinquishing and receiving the sample(s) signed, dated, and recorded the time of day on the chain-of-custody record. This record also served as a laboratory request form, specifying the analyses requested for each set of samples. 2.6 Laboratory Analyses The soil and groundwater samples were both analyzed for the following selected COCs:  VOCs Full List by EPA Methods 8260D/5030A by Gas Chromatography/Mass Spectrometry (GC/MS);  Total Petroleum Hydrocarbons, Gasoline-Range Organics (TPH-GRO) Fractionation (C 5-C10) by EPA Method 8260D/5030A by GC/MS;  Total Petroleum Hydrocarbons, Diesel-Range Organics (TPH-DRO) (C 10-C28) by EPA Methods 8015C/3550B by Gas Chromatography/Flame Ionization Detector (GC/FID); 3.0-SOIL SAMPLING RESULTS 3.1 Field Observations Visual evidence of VOC contamination, such as staining, was observed as an approximately one to two-inch thick dark layer in all soil samples collected, and located consistently approximately six inches above the mean groundwater table. Olfactory evidence of hydrocarbon contamination was observed in multiple borings, particularly B-1, B-3, and B-5, with a strong petroleum odor. The presence of VOCs was indicated by PID measurements in all borings, with a maximum reading of 1,831 parts per million (ppm) in boring B-5 at a depth of 12 to 15 feet bgs. 3.1.1 Site Geology Based on field observations made by CMT, the geology is generally consistent across the Subject Property. The predominant subsurface lithology consisted of light brown to brown coarse to fine silty sands, sandy silts, and sandy Limited Phase II Environmental Site Assessment CMT Technical Services CMT Project 19219: Former Gas Station, South Ogden, UT September 27, 2022 22 silt and clay lenses. Groundwater was encountered during investigation activities in all borings at depths ranging between 11.5 and 18 feet bgs. Copies of the boring logs are provided in Appendix A – Supporting Documentation. 3.2 Analytical Data Results Soil analytical results for VOC contamination were compared to the Utah Department of Environmental Quality (UDEQ) Initial Screening Levels (ISLs), as established by the Utah Underground Storage Tank (UST) Program (a regulatory branch of the UDEQ Division of Environmental Response and Remediation [DERR]). Of note, samples were not evaluated against the less-restrictive Tier 1 Screening Levels (SLs), as Tier 1 SLs 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. Soil analytical results were also evaluated against the EPA Regional Screening Levels (RSLs) for Industrial/Commercial Soil, with a Carcinogenic Screening Level of target cancer risk (TCR)=0.000001 (1E-06) and a target hazard quotient (THQ)=1.0. A summary of soil sample analytical data for VOCs, TPH-DRO, and TPH-GRO is provided in Tables 2, 3, and 4 of the attached data summary tables. Soil sampling result tables provide the applicable RSLs and ISLs, as well as the results from each sample and the depth at which each sample was taken. All results are listed in milligrams per kilogram (mg/kg), as specified in the laboratory report. Results with “ND <” are concentrations below the specified laboratory reporting limit (LRL), and results in bold are detections above the LRL. Results highlighted in pink are detections above the requisite RSL or CUL 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 VOCs Full List VOCs were analyzed by EPA Method 8260D/5030A by GC/MS. The list of VOCs included, but were not limited to, the five BTEXN compounds (benzene, toluene, ethylbenzene, total xylenes, and naphthalene). Soil sample analytical results are summarized as:  All soil samples tested either below the LRLs, or the UDEQ ISLs or EPA RSLs for all VOCs. Concentrations of ethylbenzene, total xylenes, naphthalene, methyl tert-butyl ether (MTBE), 1,1,2-trichloroethane, 1,2,4-trimethylbenzene, 1,3,5-trimethylbenzene, p-isopropyl-toluene, acetone, isopropyl-benzene, methylene chloride, n-propyl benzene, and sec-butyl-benzene were detected but are all below ISLs or RSLs.  MTBE was detected in each of the seven soil samples. The maximum concentration of MTBE was 0.25 mg/kg in B2-11’. All concentrations of MTBE were below the EPA RSLs of 210 mg/kg for Commercial/Industrial soil and 47 mg/kg for Residential soil, and below the UDEQ ISL of 0.3 mg/kg. Limited Phase II Environmental Site Assessment CMT Technical Services CMT Project 19219: Former Gas Station, South Ogden, UT September 27, 2022 23 TABLE 2 – SOIL SAMPLE ANALYTICAL RESULTS FOR VOCS (BTEXN compounds) SAMPLE # Benzene (mg/kg) (dry) Toluene (mg/kg) (dry) Ethylbenzene (mg/kg) (dry) Total Xylenes (mg/kg) (dry) Naphthalene (mg/kg) (dry) Methyl-tert-butyl ether (MTBE) (mg/kg) (dry) B1-12’ ND <0.002 ND <0.006 ND <0.006 ND <0.006 ND <0.006 0.15 B2-11’ ND <0.002 ND <0.006 ND <0.006 ND <0.006 ND <0.006 0.25 B3-11’ ND <0.002 ND <0.006 ND <0.006 0.05 ND <0.006 0.09 B4-12’ ND <0.002 ND <0.006 ND <0.006 ND <0.006 0.003 0.07 B5-12’ ND <0.002 ND <0.006 0.02 0.36 0.68 0.12 B6-18’ ND <0.002 ND <0.006 ND <0.006 ND <0.006 0.03 0.02 B7-16’ ND <0.002 ND <0.005 ND <0.005 ND <0.005 0.006 0.006 U.S. EPA RSLs 1.2 5.1 4,900 47,000 5.8 25 580 2,500 2.0 8.6 47 210 UDEQ ISLs 0.2 9.0 5.0 142 51 0.3 mg/kg = milligrams per kilogram ND < = Not Detected (result lower than given laboratory reporting limit) NE = regulatory limit is Not Established U.S. EPA RSLs = Environmental Protection Agency Regional Screening Levels for Residential Soil and Industrial/Commercial Soil UDEQ ISLs = Utah Department of Environmental Quality Initial Screening Levels TABLE 3 – SOIL SAMPLE ANALYTICAL RESULTS FOR VOCS (Full List) SAMPLE # 1,1,1,2- Tetrachloro- ethane (mg/kg) (dry) 1,1,1- Trichloro- ethane (mg/kg) (dry) 1,1,2,2- Tetra- chloro- ethane (mg/kg) (dry) 1,1,2- Trichloro- ethane (mg/kg) (dry) 1,1,2- Trichloro- trifluoro- ethane (mg/kg) (dry) 1,1- Dichloro- ethane (mg/kg) (dry) 1,1- Dichloro- ethene (mg/kg) (dry) 1,1- Dichloro- propene (mg/kg) (dry) B1-12’ ND <0.006 ND <0.006 ND <0.006 ND <0.006 ND <0.006 ND <0.006 ND <0.006 ND <0.006 B2-11’ ND <0.006 ND <0.006 ND <0.006 ND <0.006 ND <0.006 ND <0.006 ND <0.006 ND <0.006 B3-11’ ND <0.006 ND <0.006 ND <0.006 ND <0.006 ND <0.006 ND <0.006 ND <0.006 ND <0.006 B4-12’ ND <0.006 ND <0.006 ND <0.006 ND <0.006 ND <0.006 ND <0.006 ND <0.006 ND <0.006 B5-12’ ND <0.006 ND <0.006 ND <0.006 ND <0.006 ND <0.006 ND <0.006 ND <0.006 ND <0.006 B6-18’ ND <0.006 ND <0.006 ND <0.006 0.007 ND <0.006 ND <0.006 ND <0.006 ND <0.006 B7-16’ ND <0.005 ND <0.005 ND <0.005 ND <0.005 ND <0.005 ND <0.005 ND <0.005 ND <0.005 U.S. EPA RSLs 2.0 8.8 8,100 36,000 0.60 2.7 1.1 5.0 6,700 28,000 3.6 16 230 1,000 NE SAMPLE # 1,2,3- Trichloro- benzene (mg/kg) (dry) 1,2,3- Trichloro- propane (mg/kg) (dry) 1,2,4- Trichloro- benzene (mg/kg) (dry) 1,2,4- Trimethyl- benzene (mg/kg) (dry) 1,2-Dibromo- 3-chloro- propane (mg/kg) (dry) 1,2- Dibromo- ethane (EDB) (mg/kg) (dry) 1,2- Dichloro- benzene (mg/kg) (dry) 1,2- Dichloro- ethane (EDC) (mg/kg) (dry) B1-12’ ND <0.006 ND <0.006 ND <0.006 ND <0.006 ND <0.006 ND <0.006 ND <0.006 ND <0.006 B2-11’ ND <0.006 ND <0.006 ND <0.006 ND <0.006 ND <0.006 ND <0.006 ND <0.006 ND <0.006 B3-11’ ND <0.006 ND <0.006 ND <0.006 ND <0.006 ND <0.006 ND <0.006 ND <0.006 ND <0.006 B4-12’ ND <0.006 ND <0.006 ND <0.006 ND <0.006 ND <0.006 ND <0.006 ND <0.006 ND <0.006 B5-12’ ND <0.006 ND <0.006 ND <0.006 2.70 ND <0.006 ND <0.006 ND <0.006 ND <0.006 B6-18’ ND <0.006 ND <0.006 ND <0.006 ND <0.006 ND <0.006 ND <0.006 ND <0.006 ND <0.006 B7-16’ ND <0.005 ND <0.005 ND <0.005 ND <0.005 ND <0.005 ND <0.005 ND <0.005 ND <0.005 U.S. EPA RSLs 63 930 0.0051 0.11 24 110 300 1,800 0.0053 0.064 0.036 0.16 1,800 9,300 0.46 2.0 Limited Phase II Environmental Site Assessment CMT Technical Services CMT Project 19219: Former Gas Station, South Ogden, UT September 27, 2022 24 TABLE 3 – SOIL SAMPLE ANALYTICAL RESULTS FOR VOCS (Full List) SAMPLE # 1,2- Dichloro- propane (mg/kg) (dry) 1,3,5- Trimethyl- benzene (mg/kg) (dry) 1,3- Dichloro- benzene (mg/kg) (dry) 1,3- Dichloro- propane (mg/kg) (dry) 1,4- Dichloro- benzene (mg/kg) (dry) 2,2- Dichloro- propane (mg/kg) (dry) 2-Chloro- toluene (mg/kg) (dry) 2-Nitro- propane (mg/kg) (dry) B1-12’ ND <0.006 ND <0.006 ND <0.006 ND <0.006 ND <0.006 ND <0.006 ND <0.006 ND <0.06 B2-11’ ND <0.006 ND <0.006 ND <0.006 ND <0.006 ND <0.006 ND <0.006 ND <0.006 ND <0.06 B3-11’ ND <0.006 0.009 ND <0.006 ND <0.006 ND <0.006 ND <0.006 ND <0.006 ND <0.06 B4-12’ ND <0.006 ND <0.006 ND <0.006 ND <0.006 ND <0.006 ND <0.006 ND <0.006 ND <0.06 B5-12’ ND <0.006 0.99 ND <0.006 ND <0.006 ND <0.006 ND <0.006 ND <0.006 ND <0.06 B6-18’ ND <0.006 ND <0.006 ND <0.006 ND <0.006 ND <0.006 ND <0.006 ND <0.006 ND <0.06 B7-16’ ND <0.005 ND <0.005 ND <0.005 ND <0.005 ND <0.005 ND <0.005 ND <0.005 ND <0.05 U.S. EPA RSLs 2.5 11 270 1,500 NE 1,600 23,000 2.6 11 NE 1,600 23,000 0.064 0.28 SAMPLE # 4-Chloro- toluene (mg/kg) (dry) p- Isopropyl- toluene (mg/kg) (dry) Acetone (mg/kg) (dry) Bromo- benzene (mg/kg) (dry) Bromo- chloro- methane (mg/kg) (dry) Bromo- dichloro- methane (mg/kg) (dry) Bromoform (mg/kg) (dry) Bromo- methane (mg/kg) (dry) B1-12’ ND <0.006 ND <0.006 ND <0.06 ND <0.006 ND <0.006 ND <0.006 ND <0.006 ND <0.006 B2-11’ ND <0.006 ND <0.006 0.09 ND <0.006 ND <0.006 ND <0.006 ND <0.006 ND <0.006 B3-11’ ND <0.006 ND <0.006 ND <0.06 ND <0.006 ND <0.006 ND <0.006 ND <0.006 ND <0.006 B4-12’ ND <0.006 ND <0.006 4.94 ND <0.006 ND <0.006 ND <0.006 ND <0.006 ND <0.006 B5-12’ ND <0.006 0.07 0.12 ND <0.006 ND <0.006 ND <0.006 ND <0.006 ND <0.006 B6-18’ ND <0.006 ND <0.006 2.04 ND <0.006 ND <0.006 ND <0.006 ND <0.006 ND <0.006 B7-16’ ND <0.005 ND <0.005 ND <0.05 ND <0.005 ND <0.005 ND <0.005 ND <0.005 ND <0.005 U.S. EPA RSLs 1,600 23,000 NE 70,000 1,100K 290 1,800 150 630 0.29 1.3 19 86 6.8 30 SAMPLE # Carbon disulfide (mg/kg) (dry) Carbon Tetrachloride (CTC) (mg/kg) (dry) Chloro- benzene (mg/kg) (dry) Chloro- ethane (mg/kg) (dry) Chloroform (mg/kg) (dry) Chloro- methane (mg/kg) (dry) cis-1,2- Dichloro- ethene (mg/kg) (dry) cis-1,3- Dichloro- propene (mg/kg) (dry) B1-12’ ND <0.006 ND <0.006 ND <0.006 ND <0.006 ND <0.006 ND <0.006 ND <0.006 ND <0.006 B2-11’ ND <0.006 ND <0.006 ND <0.006 ND <0.006 ND <0.006 ND <0.006 ND <0.006 ND <0.006 B3-11’ ND <0.006 ND <0.006 ND <0.006 ND <0.006 ND <0.006 ND <0.006 ND <0.006 ND <0.006 B4-12’ ND <0.006 ND <0.006 ND <0.006 ND <0.006 ND <0.006 ND <0.006 ND <0.006 ND <0.006 B5-12’ ND <0.006 ND <0.006 ND <0.006 ND <0.006 ND <0.006 ND <0.006 ND <0.006 ND <0.006 B6-18’ ND <0.006 ND <0.006 ND <0.006 ND <0.006 ND <0.006 ND <0.006 ND <0.006 ND <0.006 B7-16’ ND <0.005 ND <0.005 ND <0.005 ND <0.005 ND <0.005 ND <0.005 ND <0.005 ND <0.005 U.S. EPA RSLs 770 3,500 0.65 2.9 280 1,300 5,400 23,000 0.32 1.4 110 460 160 2,300 1.8 8.2 mg/kg = milligrams per kilogram ND < = Not Detected (result lower than given laboratory reporting limit) NE = regulatory limit is Not Established U.S. EPA RSLs = Environmental Protection Agency Regional Screening Levels Limited Phase II Environmental Site Assessment CMT Technical Services CMT Project 19219: Former Gas Station, South Ogden, UT September 27, 2022 25 TABLE 3 – SOIL SAMPLE ANALYTICAL RESULTS FOR VOCS (Full List) SAMPLE # Cyclo- hexanone (mg/kg) (dry) Dibromo- chloro- methane (mg/kg) (dry) Dibromo- methane (mg/kg) (dry) Dichloro- difluoro- methane (mg/kg) (dry) Ethyl Acetate (mg/kg) (dry) Ethyl Ether (mg/kg) (dry) Hexachloro- butadiene (mg/kg) (dry) Isobutanol (mg/kg) (dry) B1-12’ ND <0.12 ND <0.006 ND <0.006 ND <0.006 ND <0.06 ND <0.006 ND <0.006 ND <0.12 B2-11’ ND <0.12 ND <0.006 ND <0.006 ND <0.006 ND <0.06 ND <0.006 ND <0.006 ND <0.12 B3-11’ ND <0.11 ND <0.006 ND <0.006 ND <0.006 ND <0.06 ND <0.006 ND <0.006 ND <0.11 B4-12’ ND <0.12 ND <0.006 ND <0.006 ND <0.006 ND <0.06 ND <0.006 ND <0.006 ND <0.12 B5-12’ ND <0.11 ND <0.006 ND <0.006 ND <0.006 ND <0.06 ND <0.006 ND <0.006 ND <0.11 B6-18’ ND <0.12 ND <0.006 ND <0.006 ND <0.006 ND <0.06 ND <0.006 ND <0.006 ND <0.12 B7-16’ ND <0.11 ND <0.005 ND <0.005 ND <0.005 ND <0.05 ND <0.005 ND <0.005 ND <0.11 U.S. EPA RSLs 28K 130K 8.3 390 24 99 87 370 620 2,600 16K 230K 1.2 5.3 23K 350K SAMPLE # Isopropyl- benzene (Cumene) (mg/kg) (dry) Methyl Ethyl Ketone (MEK) (mg/kg) (dry) Methyl Isobutyl Ketone (MIBK) (mg/kg) (dry) Methy- lene Chloride (mg/kg) (dry) n-Butyl Alcohol (mg/kg) (dry) n-Butyl- benzene (mg/kg) (dry) Nitro- benzene (mg/kg) (dry) n-Propyl Benzene (mg/kg) (dry) sec-Butyl- benzene (mg/kg) (dry) B1-12’ ND <0.006 ND <0.06 ND <0.06 ND <0.12 ND <0.12 ND <0.006 ND <0.12 ND <0.006 ND <0.006 B2-11’ ND <0.006 ND <0.06 ND <0.06 0.01 ND <0.12 ND <0.006 ND <0.12 ND <0.006 ND <0.006 B3-11’ ND <0.006 ND <0.06 ND <0.06 ND <0.11 ND <0.11 ND <0.006 ND <0.11 ND <0.006 ND <0.006 B4-12’ ND <0.006 ND <0.06 ND <0.06 ND <0.12 ND <0.12 ND <0.006 ND <0.12 ND <0.006 ND <0.006 B5-12’ 0.02 ND <0.06 ND <0.06 ND <0.11 ND <0.11 ND <0.006 ND <0.11 0.13 0.07 B6-18’ ND <0.006 ND <0.06 ND <0.06 ND <0.12 ND <0.12 ND <0.006 ND <0.12 0.005 0.007 B7-16’ ND <0.005 ND <0.05 ND <0.05 ND <0.11 ND <0.11 ND <0.005 ND <0.11 ND <0.005 ND <0.005 U.S. EPA RSLs 1,900 9,900 27K 190K 33K 140K 57 1,000 7,800 120K 3,900 58K 5.1 22 3,800 24K 7,800 120K SAMPLE # Styrene (mg/kg) (dry) tert-Butyl- benzene (mg/kg) (dry) Tetrachloro- ethene (PCE) (mg/kg) (dry) trans-1,2- Dichloro- ethene (mg/kg) (dry) trans-1,3- Dichloro- propene (mg/kg) (dry) Trichloro- ethene (TCE) (mg/kg) (dry) Trichloro- fluoro- methane (mg/kg) (dry) Vinyl chloride (mg/kg) (dry) B1-12’ ND <0.006 ND <0.006 ND <0.006 ND <0.006 ND <0.006 ND <0.006 ND <0.006 ND <0.006 B2-11’ ND <0.006 ND <0.006 ND <0.006 ND <0.006 ND <0.006 ND <0.006 ND <0.006 ND <0.006 B3-11’ ND <0.006 ND <0.006 ND <0.006 ND <0.006 ND <0.006 ND <0.006 ND <0.006 ND <0.006 B4-12’ ND <0.006 ND <0.006 ND <0.006 ND <0.006 ND <0.006 ND <0.006 ND <0.006 ND <0.006 B5-12’ ND <0.006 ND <0.006 ND <0.006 ND <0.006 ND <0.006 ND <0.006 ND <0.006 ND <0.006 B6-18’ ND <0.006 ND <0.006 ND <0.006 ND <0.006 ND <0.006 ND <0.006 ND <0.006 ND <0.006 B7-16’ ND <0.005 ND <0.005 ND <0.005 ND <0.005 ND <0.005 ND <0.005 ND <0.005 ND <0.005 U.S. EPA RSLs 6,000 35,000 7,800 120K 24 100 70 300 1.8 8.2 0.94 6.0 23K 350K 0.059 1.7 mg/kg = milligrams per kilogram ND < = Not Detected (result lower than given laboratory reporting limit) NE = regulatory limit is Not Established U.S. EPA RSLs = Environmental Protection Agency Regional Screening Levels Limited Phase II Environmental Site Assessment CMT Technical Services CMT Project 19219: Former Gas Station, South Ogden, UT September 27, 2022 26 3.2.2 TPH-GRO and TPH-DRO TPH-GRO (C6-C10) was analyzed by EPA Method 8260D/5035A by GC/MS, and TPH-DRO (C10-C28) was analyzed by EPA Methods 8015C/3550B by GC/FID. TPH-GRO was detected in all soil samples, with the exception of B7-16. All soil samples tested below the RSLs and ISLs for TPH-GRO. The maximum concentration of TPH-GRO was 24.6 mg/kg in B5-12’. TPH-DRO was detected in three soil samples, B-1-12’, B-3-11’, and B-5-12’, with a maximum concentration of 516 mg/kg in B- 3-11’ which exceeds the UDEQ ISL of 500 mg/kg. TABLE 4 – SOIL SAMPLE ANALYTICAL RESULTS FOR TPH-GRO and TPH-DRO SAMPLE # Aliphatic Hydrocarbons (C5-C6) (mg/kg, dry) Aliphatic Hydrocarbons (C7-C8) (mg/kg, dry) Aliphatic Hydrocarbons (C9-C10) (mg/kg, dry) Alkyl Benzenes (C9-C10) (mg/kg, dry) TPH-GRO (C6-C10) (mg/kg, dry) TPH-DRO (C10-C28) (mg/kg, dry) B1-12’ 0.10 ND <0.06 ND <0.06 ND <0.06 0.11 114 B2-11’ 0.16 ND <0.06 ND <0.06 ND <0.06 0.20 ND <64 B3-11’ 0.06 ND <0.06 ND <0.06 0.11 0.28 516 B4-12’ ND <0.06 0.06 0.12 ND <0.06 0.25 ND <62 B5-12’ 0.08 0.16 2.42 20.7 24.6 166 B6-18’ ND <0.06 0.18 0.08 0.27 0.57 ND <63 B7-16’ ND <0.05 ND <0.05 ND <0.05 ND <0.05 ND <0.05 ND <59 UDEQ ISLs NE NE NE NE 150 500 UDEQ Tier 1 SLs NE NE NE NE 1,500 5,000 TPH-GRO = Total Petroleum Hydrocarbons as Gasoline-Range Organics TPH-DRO = Total Petroleum Hydrocarbons as Diesel-Range Organics mg/kg = milligrams per kilogram ND < = Not Detected (result lower than given laboratory reporting limit) NE = regulatory limit is Not Established UDEQ ISLs = Utah Department of Environmental Quality Initial Screening Levels 4.0-GROUNDWATER SAMPLING RESULTS 4.1 Field Observations Groundwater was encountered during investigation activities in all borings at depths ranging between 11.5 and 18 feet bgs. The groundwater was observed to have a strong gasoline odor. 4.2 Analytical Data Results Groundwater analytical results were evaluated against the ISLs as established by the Utah LUST Program of the UDEQ-DERR, the EPA Maximum Contaminant Levels (MCLs) for Residential Soils with a Carcinogenic Screening Level of target cancer risk (TR)=0.000001 (1E-06), and the EPA Risk-Based Selective Screening Levels (SSLs) for protection of groundwater for VOCs. Of note, samples were not evaluated against the less-restrictive Tier 1 SLs, Limited Phase II Environmental Site Assessment CMT Technical Services CMT Project 19219: Former Gas Station, South Ogden, UT September 27, 2022 27 as Tier 1 SLs 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. A summary of groundwater sample analytical data for VOCs, TPH-GRO, and TPH-DRO is provided in Tables 5 and 6 of the attached data summary tables. Groundwater sampling results tables provide the applicable MCLs, ISLs, and Tier 1 SLs for each analyte, if available, as well as the results from each sample. All results are listed in milligrams per liter (mg/L) for BTEXN compounds, TPH-GRO, TPH-DRO, or in micrograms per liter (µg/L) for VOCs as specified in the laboratory report. Results with “ND <” are below the specified LRL, and results in bold are detections above the LRL. Results highlighted in pink are detections above the requisite MCL, ISL, or Tier 1 SL for the associated COC. The complete detailed groundwater laboratory analytical test results are included in the Appendix B - Analytical Data of this report. 4.2.1 VOCs Full List VOCs were analyzed by EPA Method 8260D/5030A by GC/MS. The list of VOCs included, but were not limited to, the five BTEXN compounds: benzene, toluene, ethylbenzene, total xylenes, and naphthalene. Groundwater sample analytical results for VOCs are summarized as:  All groundwater samples tested either below the LRLs or below MCLs/ISLs for all VOCs.  Six VOC compounds were detected above LRLs, but do not have established MCls or UDEQ ISL: naphthalene, 1,2,4-trimethylbenzene, 1,3,5-trimethylbenzene, isopropylbenzene (cumene), n- propylbenzene, and sec-propylbenzene.  Four VOC compounds were detected above LRLs, at concentrations below their respective MCL or UDEQ ISLs: benzene, toluene, ethylbenzene, and total xylenes.  Benzene was detected in one sample, B3-W, with a concentration of 0.6 µg/L.  Toluene was detected in one sample, B3-W, with a concentration of 6.7 µg/L.  Ethylbenzene was detected in three samples, B3-W, B5-W, and B6-W, with concentrations of 1.4, 186, and 1.6 µg/L, respectively.  Total Xylenes was detected in three samples, B1-W, B3-W, and B5-W, with concentrations of 1.1, 23.2, and 50.2 µg/L, respectively.  Naphthalene was detected in two samples, B5-W and B6-W, with concentrations of 186 and 16.9 µg/L, respectively. Limited Phase II Environmental Site Assessment CMT Technical Services CMT Project 19219: Former Gas Station, South Ogden, UT September 27, 2022 28 TABLE 5 – GROUNDWATER SAMPLE ANALYTICAL RESULTS FOR VOCS (Full List), BTEXN compounds SAMPLE # Benzene (µg/L) Toluene (µg/L) Ethylbenzene (µg/L) Total Xylenes (µg/L) Naphthalene (µg/L) Methyl-tert-butyl ether (MTBE) (µg/L) B1-W ND <0.4 ND <1.0 ND <1.0 1.1 ND <1.0 ND <1.0 B2-W ND <0.4 ND <1.0 ND <1.0 ND <1.0 ND <1.0 ND <1.0 B3-W 0.6 6.7 1.4 23.2 ND <1.0 ND <1.0 B4-W ND <0.4 ND <1.0 ND <1.0 ND <1.0 ND <1.0 ND <1.0 B5-W ND <0.4 ND <1.0 186 50.2 186 ND <1.0 B6-W ND <0.4 ND <1.0 1.6 ND <1.0 16.9 ND <1.0 B7-W ND <0.4 ND <1.0 ND <1.0 ND <1.0 ND <1.0 ND <1.0 U.S. EPA MCLs 5.0 1,000 700 10,000 NE NE UDEQ ISLs 5.0 1,000 700 10,000 700 200 UDEQ Tier 1 SLs 300 3,000 4,000 10,000 700 200 µg/L = micrograms per liter ND < = Not Detected (result lower than given laboratory reporting limit) NE = regulatory limit is Not Established U.S. EPA MCLs = Environmental Protection Agency Maximum Contaminant Levels UDEQ ISLs = Utah Department of Environmental Quality Initial Screening Levels TABLE 6 – GROUNDWATER SAMPLE ANALYTICAL RESULTS FOR VOCS (Full List) SAMPLE # 1,1,1,2- Tetrachloro- ethane (µg/L) 1,1,1- Trichloro- ethane (µg/L) 1,1,2,2- Tetra- chloro- ethane (µg L) 1,1,2- Trichloro- ethane (µg/L) 1,1,2- Trichloro- trifluoro- ethane (µg L) 1,1- Dichloro- ethane (µg/L) 1,1- Dichloro- ethene (µg/L) 1,1- Dichloro- propene (µg/L) B1-W ND <1.0 ND <1.0 ND <1.0 ND <1.0 ND <1.0 ND <1.0 ND <1.0 ND <1.0 B2-W ND <1.0 ND <1.0 ND <1.0 ND <1.0 ND <1.0 ND <1.0 ND <1.0 ND <1.0 B3-W ND <1.0 ND <1.0 ND <1.0 ND <1.0 ND <1.0 ND <1.0 ND <1.0 ND <1.0 B4-W ND <1.0 ND <1.0 ND <1.0 ND <1.0 ND <1.0 ND <1.0 ND <1.0 ND <1.0 B5-W ND <1.0 ND <1.0 ND <1.0 ND <1.0 ND <1.0 ND <1.0 ND <1.0 ND <1.0 B6-W ND <1.0 ND <1.0 ND <1.0 ND <1.0 ND <1.0 ND <1.0 ND <1.0 ND <1.0 B7-W ND <1.0 ND <1.0 ND <1.0 ND <1.0 ND <1.0 ND <1.0 ND <1.0 ND <1.0 U.S. EPA MCLs NE 200 NE 5.0 NE NE 7.0 NE SAMPLE # 2-Hexanone (µg/L) 1,2,3- Trichloro- benzene (µg/L) 1,2,3- Trichloro- propane (µg/L) 1,2,4- Trichloro- benzene (µg/L) 1,2,4- Trimethyl- benzene (µg/L) 1,2- Dibromo- 3-chloro- propane (µg/L) 1,2- Dibromo- ethane (EDB) (µg/L) 1,2- Dichloro- benzene (µg/L) B1-W ND <20.0 ND <1.0 ND <1.0 ND <1.0 ND <1.0 ND <1.0 ND <1.0 ND <1.0 B2-W ND <20.0 ND <1.0 ND <1.0 ND <1.0 ND <1.0 ND <1.0 ND <1.0 ND <1.0 B3-W ND <20.0 ND <1.0 ND <1.0 ND <1.0 1.2 ND <1.0 ND <1.0 ND <1.0 B4-W ND <20.0 ND <1.0 ND <1.0 ND <1.0 ND <1.0 ND <1.0 ND <1.0 ND <1.0 B5-W ND <20.0 ND <1.0 ND <1.0 ND <1.0 11.2 ND <1.0 ND <1.0 ND <1.0 B6-W ND <20.0 ND <1.0 ND <1.0 ND <1.0 ND <1.0 ND <1.0 ND <1.0 ND <1.0 B7-W ND <20.0 ND <1.0 ND <1.0 ND <1.0 ND <1.0 ND <1.0 ND <1.0 ND <1.0 U.S. EPA MCLs NE NE NE 70 NE 0.20 0.05 600 Limited Phase II Environmental Site Assessment CMT Technical Services CMT Project 19219: Former Gas Station, South Ogden, UT September 27, 2022 29 TABLE 6 – GROUNDWATER SAMPLE ANALYTICAL RESULTS FOR VOCS (Full List) SAMPLE # 1,2- Dichloro- ethane (µg/L) 1,2- Dichloro- propane (µg/L) 1,3,5- Trimethyl- benzene (µg/L) 1,3- Dichloro- benzene (µg/L) 1,3- Dichloro- propane (µg/L) 1,4- Dichloro- benzene (µg/L) 2,2- Dichloro- propane (µg/L) 2-Chloro- toluene (µg/L) B1-W ND <1.0 ND <1.0 ND <1.0 ND <1.0 ND <1.0 ND <1.0 ND <1.0 ND <1.0 B2-W ND <1.0 ND <1.0 ND <1.0 ND <1.0 ND <1.0 ND <1.0 ND <1.0 ND <1.0 B3-W ND <1.0 ND <1.0 ND <1.0 ND <1.0 ND <1.0 ND <1.0 ND <1.0 ND <1.0 B4-W ND <1.0 ND <1.0 ND <1.0 ND <1.0 ND <1.0 ND <1.0 ND <1.0 ND <1.0 B5-W ND <1.0 ND <1.0 3.7 ND <1.0 ND <1.0 ND <1.0 ND <1.0 ND <1.0 B6-W ND <1.0 ND <1.0 ND <1.0 ND <1.0 ND <1.0 ND <1.0 ND <1.0 ND <1.0 B7-W ND <1.0 ND <1.0 ND <1.0 ND <1.0 ND <1.0 ND <1.0 ND <1.0 ND <1.0 U.S. EPA MCLs 5.0 5.0 NE NE NE 75 NE NE SAMPLE # 2-Nitro- propane (µg/L) 4-Chloro- toluene (µg/L) Acetone (µg/L) Acrylonitrile (µg/L) Bromo- benzene (µg/L) Bromo- chloro- methane (µg/L) Bromo- dichloro- methane (µg/L) Bromoform (µg/L) Bromo- methane (µg/L) B1-W ND <10.0 ND <1.0 ND <10.0 ND <10.0 ND <1.0 ND <1.0 ND <1.0 ND <1.0 ND <1.0 B2-W ND <10.0 ND <1.0 ND <10.0 ND <10.0 ND <1.0 ND <1.0 ND <1.0 ND <1.0 ND <1.0 B3-W ND <10.0 ND <1.0 ND <10.0 ND <10.0 ND <1.0 ND <1.0 ND <1.0 ND <1.0 ND <1.0 B4-W ND <10.0 ND <1.0 ND <10.0 ND <10.0 ND <1.0 ND <1.0 ND <1.0 ND <1.0 ND <1.0 B5-W ND <10.0 ND <1.0 ND <10.0 ND <10.0 ND <1.0 ND <1.0 ND <1.0 ND <1.0 ND <1.0 B6-W ND <10.0 ND <1.0 ND <10.0 ND <10.0 ND <1.0 ND <1.0 ND <1.0 ND <1.0 ND <1.0 B7-W ND <10.0 ND <1.0 ND <10.0 ND <10.0 ND <1.0 ND <1.0 ND <1.0 ND <1.0 ND <1.0 U.S. EPA MCLs NE NE NE NE NE NE 80 80 NE SAMPLE # Carbon disulfide (µg/L) Carbon Tetrachloride (µg/L) Chloro- benzene (µg/L) Chloro- ethane (µg/L) Chloroform (µg/L) Chloro- methane (µg/L) cis-1,2- Dichloro- ethene (µg/L) cis-1,3- Dichloro- propene (µg/L) B1-W ND <1.0 ND <1.0 ND <1.0 ND <1.0 ND <1.0 ND <1.0 ND <1.0 ND <1.0 B2-W ND <1.0 ND <1.0 ND <1.0 ND <1.0 ND <1.0 ND <1.0 ND <1.0 ND <1.0 B3-W ND <1.0 ND <1.0 ND <1.0 ND <1.0 ND <1.0 ND <1.0 ND <1.0 ND <1.0 B4-W ND <1.0 ND <1.0 ND <1.0 ND <1.0 ND <1.0 ND <1.0 ND <1.0 ND <1.0 B5-W ND <1.0 ND <1.0 ND <1.0 ND <1.0 ND <1.0 ND <1.0 ND <1.0 ND <1.0 B6-W ND <1.0 ND <1.0 ND <1.0 ND <1.0 ND <1.0 ND <1.0 ND <1.0 ND <1.0 B7-W ND <1.0 ND <1.0 ND <1.0 ND <1.0 ND <1.0 ND <1.0 ND <1.0 ND <1.0 U.S. EPA MCLs NE 5.0 100 NE 80 NE 70 NE µg/L = micrograms per liter ND < = Not Detected (result lower than given laboratory reporting limit) NE = regulatory limit is Not Established U.S. EPA MCLs = Environmental Protection Agency Maximum Contaminant Levels Limited Phase II Environmental Site Assessment CMT Technical Services CMT Project 19219: Former Gas Station, South Ogden, UT September 27, 2022 30 TABLE 6 – GROUNDWATER SAMPLE ANALYTICAL RESULTS FOR VOCS (Full List) SAMPLE # Cyclo- hexanone (µg/L) Dibromo- chloro- methane (µg/L) Dibromo- methane (µg/L) Dichloro- difluoro- methane (µg/L) Ethyl Acetate (µg/L) Ethyl Ether (µg/L) Hexa- chloro- butadiene (µg/L) Isobutanol (µg/L) Isopropyl- benzene (Cumene) (µg/L) B1-W ND <20.0 ND <1.0 ND <1.0 ND <1.0 ND <10.0 ND <1.0 ND <1.0 ND <10.0 1.2 B2-W ND <20.0 ND <1.0 ND <1.0 ND <1.0 ND <10.0 ND <1.0 ND <1.0 ND <10.0 ND <1.0 B3-W ND <20.0 ND <1.0 ND <1.0 ND <1.0 ND <10.0 ND <1.0 ND <1.0 ND <10.0 ND <1.0 B4-W ND <20.0 ND <1.0 ND <1.0 ND <1.0 ND <10.0 ND <1.0 ND <1.0 ND <10.0 ND <1.0 B5-W ND <20.0 ND <1.0 ND <1.0 ND <1.0 ND <10.0 ND <1.0 ND <1.0 ND <10.0 45.6 B6-W ND <20.0 ND <1.0 ND <1.0 ND <1.0 ND <10.0 ND <1.0 ND <1.0 ND <10.0 2.8 B7-W ND <20.0 ND <1.0 ND <1.0 ND <1.0 ND <10.0 ND <1.0 ND <1.0 ND <10.0 ND <1.0 U.S. EPA MCLs NE 80 NE NE NE NE NE NE NE SAMPLE # Methyl Ethyl Ketone (MEK) (µg/L) Methyl Isobutyl Ketone (MIBK) (µg/L) Methylene Chloride (µg/L) n-Butyl Alcohol (µg/L) n-Butyl- benzene (µg/L) Nitro- benzene (µg/L) n-Propyl Benzene (µg/L) p- Isopropyl -toluene (µg/L) sec-Butyl- benzene (µg/L) B1-W ND <10.0 ND <10.0 ND <2.0 ND <40.0 ND <1.0 ND <20.0 4.6 ND <1.0 3.7 B2-W ND <10.0 ND <10.0 ND <2.0 ND <40.0 ND <1.0 ND <20.0 ND <1.0 ND <1.0 ND <1.0 B3-W ND <10.0 ND <10.0 ND <2.0 ND <40.0 ND <1.0 ND <20.0 ND <1.0 ND <1.0 ND <1.0 B4-W ND <10.0 ND <10.0 ND <2.0 ND <40.0 ND <1.0 ND <20.0 ND <1.0 ND <1.0 2.4 B5-W ND <10.0 ND <10.0 ND <2.0 ND <40.0 ND <1.0 ND <20.0 154 ND <1.0 25.8 B6-W ND <10.0 ND <10.0 ND <2.0 ND <40.0 ND <1.0 ND <20.0 9.7 ND <1.0 7.9 B7-W ND <10.0 ND <10.0 ND <2.0 ND <40.0 ND <1.0 ND <20.0 ND <1.0 ND <1.0 ND <1.0 U.S. EPA MCLs NE NE 5.0 NE NE NE NE NE NE SAMPLE # Styrene (µg/L) tert-Butyl- benzene (µg/L) Tetrachloro- ethene (PCE) (µg/L) trans-1,2- Dichloro- ethene (µg/L) trans-1,3- Dichloro- propene (µg/L) Trichloro- ethene (TCE) (µg/L) Trichloro- fluoro- methane (µg/L) Vinyl chloride (µg/L) B1-W ND <1.0 ND <1.0 ND <1.0 ND <1.0 ND <1.0 ND <1.0 ND <1.0 ND <1.0 B2-W ND <1.0 ND <1.0 ND <1.0 ND <1.0 ND <1.0 ND <1.0 ND <1.0 ND <1.0 B3-W ND <1.0 ND <1.0 ND <1.0 ND <1.0 ND <1.0 ND <1.0 ND <1.0 ND <1.0 B4-W ND <1.0 ND <1.0 ND <1.0 ND <1.0 ND <1.0 ND <1.0 ND <1.0 ND <1.0 B5-W ND <1.0 ND <1.0 ND <1.0 ND <1.0 ND <1.0 ND <1.0 ND <1.0 ND <1.0 B6-W ND <1.0 ND <1.0 ND <1.0 ND <1.0 ND <1.0 ND <1.0 ND <1.0 ND <1.0 B7-W ND <1.0 ND <1.0 ND <1.0 ND <1.0 ND <1.0 ND <1.0 ND <1.0 ND <1.0 U.S. EPA MCLs 100 NE 5.0 100 NE 5.0 NE 2.0 µg/L = micrograms per liter ND < = Not Detected (result lower than given laboratory reporting limit) NE = regulatory limit is Not Established U.S. EPA MCLs = Environmental Protection Agency Maximum Contaminant Levels Limited Phase II Environmental Site Assessment CMT Technical Services CMT Project 19219: Former Gas Station, South Ogden, UT September 27, 2022 31 4.2.2 TPH-GRO and TPH-DRO TPH-GRO (C6-C10) was analyzed by EPA Methods 8260D/5030A by GC/MS, and TPH-DRO (C 10-C28) was analyzed by EPA Methods 8015C/3510B by GC/FID. Groundwater sample analytical results for TPH-GRO and TPH-DRO are summarized as:  There are no established EPA MCLs for TPH-GRO, and TPH-DRO, so the UDEQ ISLs are the standard.  TPH-GRO was detected in every groundwater sample, with the exception of B7-W. Detections of TPH- GRO exceeded the UDEQ ISL of 1 mg/L in samples B1-W and B5-W with concentrations of 1.27 mg/L and 5.81 mg/L, respectively.  TPH-DRO was detected in only one groundwater sample, B5-W, at a concentration of 2.4 mg/L, exceeding the UDEQ ISL of 1 mg/L. TABLE 7 – GROUNDWATER SAMPLE ANALYTICAL RESULTS FOR TPH-GRO and TPH-DRO SAMPLE # Aliphatic Hydrocarbons (C5-C6) (mg/L) Aliphatic Hydrocarbons (C7-C8) (mg/L) Aliphatic Hydrocarbons (C9-C10) (mg/L) Alkyl Benzenes (C9-C10) (mg/L) TPH-GRO (C6-C10) (mg/L) TPH-DRO (C10-C28) (mg/L) B1-W 0.106 0.606 0.0172 0.538 1.270 ND <1.0 B2-W 0.0024 0.258 0.0099 0.0061 0.277 ND <1.0 B3-W 0.0025 0.131 0.0048 0.0402 0.211 ND <1.0 B4-W 0.0220 0.534 0.0120 0.0768 0.645 ND <1.0 B5-W 0.0482 1.040 0.0830 4.160 5.810 2.4 B6-W 0.007.2 0.392 0.019.3 0.534 0.970 ND <1.0 B7-W ND <0.0100 0.0052 0.0005 ND <0.0100 ND <0.0100 ND <1.0 UDEQ ISLs NE NE NE NE 1 1 UDEQ Tier 1 SLs NE NE NE NE 10 10 TPH-GRO = Total Petroleum Hydrocarbons as Gasoline-Range Organics TPH-DRO = Total Petroleum Hydrocarbons as Diesel-Range Organics mg/L = milligrams per liter ND < = Not Detected (result lower than given laboratory reporting limit) NE = Regulatory limit is Not Established U.S. EPA MCLs = Environmental Protection Agency Maximum Contaminant Levels UDEQ ISLs = Utah Department of Environmental Quality Initial Screening Levels 5.0-CONCLUSIONS AND RECOMMENDATIONS 5.1 Conclusions Based on a review of the field and laboratory analytical data from the LSI, the following is summarized:  The GPR scan of the Subject Property found evidence for the former locations of the USTs, store, and dispenser pumps at the former fueling station that have since been removed. Soil disturbances were observed on the GPR survey, but the presence of extant USTs and piping at the site was not found.  MTBE was detected in all of the seven soil samples. All concentrations of MTBE were below the EPA RSLs for Commercial/Industrial soil for Residential soil, and below the UDEQ ISL. Limited Phase II Environmental Site Assessment CMT Technical Services CMT Project 19219: Former Gas Station, South Ogden, UT September 27, 2022 32  TPH-GRO was detected in all soil samples except B7-16. All soil samples tested below the RSLs and ISLs for TPH-GRO.  TPH-DRO was detected in three soil samples, B-1-12’, B-3-11’, and B-5-12’, with a maximum concentration of 516 mg/kg in B-3-11’ which exceeds the UDEQ ISL.  All groundwater samples tested either below the LRLs or below MCLs/ISLs for all VOCs.  TPH-GRO was detected in every groundwater sample, with the exception of B7-W. Detections of TPH- GRO exceeded the UDEQ ISL in samples B1-W and B5-W.  TPH-DRO was detected in only one sample, B5-W, exceeding the UDEQ ISL. In conclusion, petroleum hydrocarbons in the form of gasoline (TPH-GRO) and diesel (TPH-DRO) in groundwater pose a REC in connection with the Subject Property. The highest groundwater concentrations of gasoline, diesel, and VOCs were detected in the samples collected from the B-5 location. corresponding to the former western dispenser island. Concentrations of gasoline and diesel in groundwater exceed the UDEQ ISLs, but the concentrations of gasoline and diesel in the soil at these locations are lower. The levels of contamination in the soil and groundwater are not directly correlated. The concentration of diesel in B-3 soil is the only one that exceeds UDEQ ISLs. This suggests that contamination is primarily contained in the groundwater; the soil may not be a significant source of gasoline contamination. This interpretation could result if the western dispenser pump at B-5 leaked at some point during its operation. Product would have seeped down to the shallow groundwater. Natural groundwater flow would then disperse gasoline product around the area and downgradient. The diesel in soil detection at B-3 could be a remnant impact from the former UST tankhold. The potential for migration or intrusion of hydrocarbon vapors into the current buildings is not known at this time due to the distance to the buildings from the source area (35-90 feet). The buildings are in the general direction of groundwater flow to the northwest. There is the potential that there is a plume leaving the source area and extending downgradient towards the retail businesses. 5.2 Recommendations The following recommendations are based on the findings and conclusions presented in this report LSI and previous data obtained during the Phase I ESA. CMT recommends the following: 1. Characterization of the nature and extent of potential soil and groundwater impacts is needed as there is currently a data gap regarding remaining soil and groundwater contamination. Conduct additional characterization of the lateral and areal extent of soil and groundwater impacts, especially in the presumed downgradient direction to the northwest. Install additional soil borings to groundwater to collect samples from the soil column and groundwater table. Limited Phase II Environmental Site Assessment CMT Technical Services CMT Project 19219: Former Gas Station, South Ogden, UT September 27, 2022 33 2. Install permanent downgradient groundwater monitoring wells to better gauge the impact to groundwater, and to determine the groundwater flow direction. 3. The potential health risk associated with the soil vapor concentrations detected during this investigation should be further evaluated with a Human Health Risk Assessment. 4. Consider entering the Voluntary Cleanup Program with Utah DEQ and pursue regulatory site closure. 5. Complete a focused feasibility study of appropriate remedial options and implement a remedial action for the cleanup of the site. The shallow groundwater and predominant silt and sand content observed in subsurface soils suggests groundwater extraction and treatment, with in situ chemical oxidation may be viable remedial techniques to consider. Remediation of VOCs in soil can be accomplished with localized excavations where elevated concentrations are determined to be present. 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. We have 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 Limited 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. This report is prepared for the sole use and benefit of Mountain City Commercial Real Estate, Craig Gasser, 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 Phase II Environmental Site Assessment CMT Technical Services CMT Project 19219: Former Gas Station, South Ogden, UT September 27, 2022 34 7.0-CLOSURE We appreciate the opportunity to be of service to you on this project. If you have any questions, please call. CMT Technical Services, Inc. Michael Sauerwein, P.G. Reviewed By: Mark C. Larsen, P.G. Environmental Specialist & Geologist Engineering Geologist 8.0-REFERENCES CMT Technical Services, 2022. Statement of Work for Limited Phase II Environmental Site Assessment, Former Fuel Station Property, 3965 S. Washington Boulevard, South Ogden, Weber County, Utah 84403 . Dated September 9, 2022. Partner, 2022. Phase I Environmental Site Assessment, Vista View LLC, 3965 Washington Boulevard, South Ogden, Utah 84403. Dated August 25, 2022. U.S. Environmental Protection Agency, Regional Screening Level (RSL) Summary and Resident Soil Table (TR=1E- 06, THQ=1) November 2021 https://www.epa.gov/risk/regional-screening-levels-rsls-generic-tables / Utah Department of Environmental Quality (UDEQ) website: http://www.deq.utah.gov/ Utah Department of Environmental Quality, Leaking Under Ground Storage Tank, Initial Screening Levels , November 1, 2005. Weber County Assessor’s Website: http://www3.co.weber.ut.us/psearch/index.php 09/27/22 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 2021 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 Tapwater (ug/L) k e y MCL (ug/L) Risk-based SSL (mg/kg) k e y MCL-based SSL (mg/kg) 3.0E-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 2.2E-06 I 9.0E-03 I V 1 1.1E+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** 2.0E-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 9.0E-01 I V 1 1.1E+05 Acetone 67-64-1 7.0E+04 n 1.1E+06 nms 1.8E+04 n 3.7E+00 n 2.0E-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 6.0E-02 I V 1 1.3E+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 1.0E-01 I V 1 2.5E+03 Acetophenone 98-86-2 7.8E+03 ns 1.2E+05 nms 1.9E+03 n 5.8E-01 n 3.8E+00 C 1.3E-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 5.0E-04 I 2.0E-05 I V 1 2.3E+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 5.0E-01 I 1.0E-04 I 2.0E-03 I 6.0E-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 5.0E-01 I 2.0E-04 P V 1 1.1E+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 5.4E-01 I 6.8E-05 I 1.0E-02 A 2.0E-03 I V 1 1.1E+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* 6.0E-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 5.6E-02 C 1.0E-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 1.0E-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 1.0E-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 1.7E+01 I 4.9E-03 I 3.0E-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 4.0E-03 P 1.0E-04 X V 1 1.1E+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 2.1E-02 C 6.0E-06 C 1.0E-03 I V 1 1.4E+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** 1.0E+00 P 5.0E-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 4.0E-04 I 1 Aluminum Phosphide 20859-73-8 3.1E+01 n 4.7E+02 n 8.0E+00 n 9.0E-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 2.1E+01 C 6.0E-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 8.0E-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 4.0E-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 2.0E-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 2.5E-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 5.0E-01 I V 1 Ammonia 7664-41-7 5.2E+02 n 2.2E+03 n 2.0E-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 2.0E-01 I 1 Ammonium Sulfamate 7773-06-0 1.6E+04 n 2.3E+05 nm 4.0E+03 n 3.0E-03 X V 1 1.4E+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 5.7E-03 I 1.6E-06 C 7.0E-03 P 1.0E-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* 4.0E-02 P 2.0E-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* 4.0E-04 I 3.0E-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 5.0E-04 H 0.15 Antimony Pentoxide 1314-60-9 3.9E+01 n 5.8E+02 n 9.7E+00 n 4.0E-04 H 0.15 Antimony Tetroxide 1332-81-6 3.1E+01 n 4.7E+02 n 7.8E+00 n 2.0E-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 1.5E+00 I 4.3E-03 I 3.0E-04 I 1.5E-05 C 1 0.03 Arsenic, Inorganic 7440-38-2 6.8E-01 c*R 3.0E+00 cR 6.5E-04 c* 2.9E-03 c* 5.2E-02 c 1.0E+01 1.5E-03 c 2.9E-01 3.5E-06 C 5.0E-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) 3.6E-02 O 1 0.1 Asulam 3337-71-1 2.3E+03 n 3.0E+04 n 7.2E+02 n 1.8E-01 n 2.3E-01 C 3.0E-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 8.8E-01 C 2.5E-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 4.0E-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 3.0E-03 A 1.0E-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 1.1E-01 I 3.1E-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 1.0E+00 P 7.0E-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 2.0E-01 I 5.0E-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 5.0E-03 O V 1 Benfluralin 1861-40-1 3.9E+02 n 5.8E+03 n 2.8E+01 n 9.4E-01 n 5.0E-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 2.0E-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 3.0E-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 4.0E-03 P 1.0E-01 I V 1 1.2E+03 Benzaldehyde 100-52-7 1.7E+02 c* 8.2E+02 c 1.9E+01 c 4.1E-03 c 5.5E-02 I 7.8E-06 I 4.0E-03 I 3.0E-02 I V 1 1.8E+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 1.0E-01 X 3.0E-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** 1.0E-03 P V 1 1.3E+03 Benzenethiol 108-98-5 7.8E+01 n 1.2E+03 n 1.7E+01 n 1.1E-02 n 2.3E+02 I 6.7E-02 I 3.0E-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 9.0E-05 X 2.0E-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 4.0E+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 1.3E+01 I V 1 3.2E+02 Benzotrichloride 98-07-7 5.3E-02 c 2.5E-01 c 3.0E-03 c 6.6E-06 c 1.0E-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 1.7E-01 I 4.9E-05 C 2.0E-03 P 1.0E-03 P V 1 1.5E+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* 2.4E-03 I 2.0E-03 I 2.0E-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 9.0E-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 1.5E-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 8.0E-03 I 5.0E-01 I 4.0E-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 4.0E-02 I V 1 1.0E+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 3.0E-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 1.1E+00 I 3.3E-04 I V 1 5.1E+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 2.2E+02 I 6.2E-02 I V 1 4.2E+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 5.0E-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 2.0E-01 I 2.0E-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 2.0E+00 P 2.0E-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 4.0E-02 C 1.3E-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 7.0E-01 I 4.0E-03 I 1 Bromate 15541-45-4 9.9E-01 c 4.7E+00 c 1.1E-01 c 1.0E+01 8.5E-04 c 7.7E-02 1.0E-04 X 6.0E-05 X V 1 2.4E+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 Key: I = IRIS; P = PPRTV; O = OPP; A = ATSDR; C = Cal EPA; X = PPRTV Screening Level; H = HEAST; W = TEF applied; E = RPF applied; G = user's guide Section 5; M = mutagen; V = volatile; R = RBA applied ; c = cancer; n = noncancer; * = where: n SL < 100X c SL; ** = where n SL < 10X c SL; SSL values are based on DAF=1; m = ceiling limit exceeded; s = Csat exceeded. Toxicity and Chemical-specific Information Contaminant Screening Levels Protection of Ground Water SSLs Page 1 of 11 TR = 1 E - 0 6 TH Q = 1 . 0 Regional Screening Level (RSL) Summary Table (TR=1E-06, HQ=1) November 2021 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 Tapwater (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; C = Cal EPA; X = PPRTV Screening Level; H = HEAST; W = TEF applied; E = RPF applied; G = user's guide Section 5; M = mutagen; V = volatile; R = RBA applied ; c = cancer; n = noncancer; * = where: n SL < 100X c SL; ** = where n SL < 10X c SL; SSL values are based on DAF=1; m = ceiling limit exceeded; s = Csat exceeded. Toxicity and Chemical-specific Information Contaminant Screening Levels Protection of Ground Water SSLs 3.0E-04 X V 1 9.0E+02 Bromo-3-fluorobenzene, 1-1073-06-9 2.3E+01 n 3.5E+02 n 4.9E+00 n 4.7E-03 n 3.0E-04 X V 1 3.2E+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 0.1 Bromoacetic acid 79-08-3 6.0E+01(G) 1.2E-02 8.0E-03 I 6.0E-02 I V 1 6.8E+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 4.0E-02 X V 1 4.0E+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 6.2E-02 I 3.7E-05 C 8.0E-03 P V 1 9.3E+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 7.9E-03 I 1.1E-06 I 2.0E-02 I V 1 9.2E+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 1.4E-03 I 5.0E-03 I V 1 3.6E+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 5.0E-03 H V 1 Bromophos 2104-96-3 3.9E+02 n 5.8E+03 n 3.5E+01 n 1.5E-01 n 1.0E-01 A V 1 9.7E+02 Bromopropane, 1-106-94-5 2.2E+02 n 9.4E+02 n 1.0E+02 n 4.4E+02 n 2.1E+02 n 6.4E-02 n 1.0E-01 O 1.5E-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 1.0E-01 O 1.5E-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 6.0E-01 C 3.0E-05 I 2.0E-03 I V 1 6.7E+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* 1.0E-01 I V 1 7.6E+03 Butanol, N-71-36-3 7.8E+03 ns 1.2E+05 nms 2.0E+03 n 4.1E-01 n 5.0E-04 I 4.0E-01 I 5.0E+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* 2.0E+00 P 3.0E+01 P V 1 2.1E+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 5.0E-02 I V 1 Butylate 2008-41-5 3.9E+03 n 5.8E+04 n 4.6E+02 n 4.5E-01 n 2.0E-04 C 5.7E-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 3.6E-03 P 3.0E-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 5.0E-02 P V 1 1.1E+02 Butylbenzene, n-104-51-8 3.9E+03 ns 5.8E+04 ns 1.0E+03 n 3.2E+00 n 1.0E-01 X V 1 1.5E+02 Butylbenzene, sec-135-98-8 7.8E+03 ns 1.2E+05 nms 2.0E+03 n 5.9E+00 n 1.0E-01 X V 1 1.8E+02 Butylbenzene, tert-98-06-6 7.8E+03 ns 1.2E+05 nms 6.9E+02 n 1.6E+00 n 2.0E-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 1.8E-03 I 1.0E-04 A 1.0E-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** 1.8E-03 I 1.0E-04 A 1.0E-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 5.0E-01 I 2.2E-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 1.5E-01 C 4.3E-05 C 2.0E-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* 2.3E-03 C 6.6E-07 C 1.3E-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* 1.0E-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 5.0E-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 1.0E-01 I 7.0E-01 I V 1 7.4E+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 7.0E-02 I 6.0E-06 I 4.0E-03 I 1.0E-01 I V 1 4.6E+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 1.0E-01 P V 1 5.9E+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 1.0E-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 1.0E-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 9.0E-04 I 1 Ceric oxide 1306-38-3 1.3E+06 nm 5.4E+06 nm 9.4E-01 n 3.9E+00 n 1.0E-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 1.5E-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 Chloramines, Organic E701235 4.0E+03(G) 4.0E-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 5.0E-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 5.0E-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 3.5E-01 I 1.0E-04 I 5.0E-04 I 7.0E-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 1.0E+01 I 4.6E-03 C 3.0E-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 7.0E-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 9.0E-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 1.0E-01 I 1.5E-04 A V 1 2.8E+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 3.0E-02 I 2.0E-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) 3.0E-02 I 1 Chlorite (Sodium Salt)7758-19-2 2.3E+03 n 3.5E+04 n 6.0E+02 n 1.0E+03 5.0E+01 I V 1 1.2E+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 3.0E-04 I 2.0E-02 H 2.0E-02 I V 1 7.9E+02 Chloro-1,3-butadiene, 2-126-99-8 1.0E-02 c 4.4E-02 c 9.4E-03 c 4.1E-02 c 1.9E-02 c 9.8E-06 c 4.6E-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 1.0E-01 P 7.7E-05 C 3.0E-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* 2.7E-01 X V 1 1.2E+04 Chloroacetaldehyde, 2-107-20-0 2.6E+00 c 1.2E+01 c 2.9E-01 c 5.8E-05 c 1 0.1 Chloroacetic Acid 79-11-8 6.0E+01(G) 1.2E-02 3.0E-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 2.0E-01 P 5.0E-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* 2.0E-02 I 5.0E-02 P V 1 7.6E+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 1.0E-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 1.1E-01 C 3.1E-05 C 2.0E-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 3.0E-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 8.6E-06 C 3.0E-03 P 3.0E-01 P V 1 2.9E+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* 4.0E-02 P V 1 7.3E+02 Chlorobutane, 1-109-69-3 3.1E+03 ns 4.7E+04 ns 6.4E+02 n 2.6E-01 n 5.0E+01 I V 1 1.7E+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 2.0E-02 P V 1 1.1E+05 Chloroethanol, 2-107-07-3 1.6E+03 n 2.3E+04 n 4.0E+02 n 8.1E-02 n 3.1E-02 C 2.3E-05 I 1.0E-02 I 9.8E-02 A V 1 2.5E+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 9.0E-02 I V 1 1.3E+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 2.4E+00 C 6.9E-04 C V 1 9.3E+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 3.0E-01 P 3.0E-03 P 1.0E-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 6.0E-02 P 7.0E-04 P 2.0E-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* 5.0E-03 I V 1 2.7E+04 Chlorophenol, 2-95-57-8 3.9E+02 n 5.8E+03 n 9.1E+01 n 8.9E-02 n 4.0E-04 C V 1 6.2E+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 1.7E-02 C 1.5E-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* 2.0E-02 I V 1 9.1E+02 Chlorotoluene, o-95-49-8 1.6E+03 ns 2.3E+04 ns 2.4E+02 n 2.3E-01 n 2.0E-02 X V 1 2.5E+02 Chlorotoluene, p-106-43-4 1.6E+03 ns 2.3E+04 ns 2.5E+02 n 2.4E-01 n 2.4E+02 C 6.9E-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 5.0E-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 Page 2 of 11 TR = 1 E - 0 6 TH Q = 1 . 0 Regional Screening Level (RSL) Summary Table (TR=1E-06, HQ=1) November 2021 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 Tapwater (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; C = Cal EPA; X = PPRTV Screening Level; H = HEAST; W = TEF applied; E = RPF applied; G = user's guide Section 5; M = mutagen; V = volatile; R = RBA applied ; c = cancer; n = noncancer; * = where: n SL < 100X c SL; ** = where n SL < 10X c SL; SSL values are based on DAF=1; m = ceiling limit exceeded; s = Csat exceeded. Toxicity and Chemical-specific Information Contaminant Screening Levels Protection of Ground Water SSLs 1.0E-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 1.0E-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 5.0E-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 1.0E-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 8.0E-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 1.5E+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 5.0E-01 C 8.4E-02 G 3.0E-03 I 1.0E-04 I M 0.025 Chromium(VI)18540-29-9 3.0E-01 c 6.3E+00 c 1.2E-05 c 1.5E-04 c 3.5E-02 c 6.7E-04 c 0.013 Chromium, Total 7440-47-3 1.0E+02 1.8E+05 1.3E-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 9.0E-03 P 3.0E-04 P 6.0E-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 6.2E-04 I V M 1 Coke Oven Emissions E649830 1.6E-03 c 2.0E-02 c 4.0E-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 5.0E-02 I 6.0E-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 5.0E-02 I 6.0E-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 2.0E-02 P 6.0E-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 1.0E-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 1.0E-01 A 6.0E-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 1.9E+00 H 1.0E-03 P V 1 1.7E+04 Crotonaldehyde, trans-123-73-9 3.7E-01 c 1.7E+00 c 4.0E-02 c 8.2E-06 c 1.0E-01 I 4.0E-01 I V 1 2.7E+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 2.2E-01 C 6.3E-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 8.4E-01 H 2.0E-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 1.0E-03 I 1 ~Calcium Cyanide 592-01-8 7.8E+01 n 1.2E+03 n 2.0E+01 n 5.0E-03 I 1 ~Copper Cyanide 544-92-3 3.9E+02 n 5.8E+03 n 1.0E+02 n 6.0E-04 I 8.0E-04 G V 1 9.5E+05 ~Cyanide (CN-)57-12-5 2.3E+01 n 1.5E+02 n 8.3E-01 n 3.5E+00 n 1.5E+00 n 2.0E+02 1.5E-02 n 2.0E+00 1.0E-03 I V 1 ~Cyanogen 460-19-5 7.8E+01 n 1.2E+03 n 2.0E+01 n 9.0E-02 I V 1 ~Cyanogen Bromide 506-68-3 7.0E+03 n 1.1E+05 nm 1.8E+03 n 5.0E-02 I V 1 ~Cyanogen Chloride 506-77-4 3.9E+03 n 5.8E+04 n 1.0E+03 n 6.0E-04 I 8.0E-04 I V 1 1.0E+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 2.0E-03 I 1 ~Potassium Cyanide 151-50-8 1.6E+02 n 2.3E+03 n 4.0E+01 n 5.0E-03 I 0.04 ~Potassium Silver Cyanide 506-61-6 3.9E+02 n 5.8E+03 n 8.2E+01 n 1.0E-01 I 0.04 ~Silver Cyanide 506-64-9 7.8E+03 n 1.2E+05 nm 1.8E+03 n 1.0E-03 I 1 ~Sodium Cyanide 143-33-9 7.8E+01 n 1.2E+03 n 2.0E+01 n 2.0E+02 2.0E-04 P 1 ~Thiocyanates E1790664 1.6E+01 n 2.3E+02 n 4.0E+00 n 2.0E-04 X V 1 ~Thiocyanic Acid 463-56-9 1.6E+01 n 2.3E+02 n 4.0E+00 n 5.0E-02 I 1 ~Zinc Cyanide 557-21-1 3.9E+03 n 5.8E+04 n 1.0E+03 n 6.0E+00 I V 1 1.2E+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 2.0E-02 X 2.0E-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 5.0E+00 I 7.0E-01 P V 1 5.1E+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 5.0E-03 P 1.0E+00 X V 1 2.8E+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 2.0E-01 I V 1 2.9E+05 Cyclohexylamine 108-91-8 1.6E+04 n 2.3E+05 nm 3.8E+03 n 1.0E+00 n 2.5E-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 7.2E-02 O 1 0.1 Cypermethrin 52315-07-8 4.5E+03 n 5.9E+04 n 1.4E+03 n 2.3E+02 n 5.0E-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 2.4E-01 I 6.9E-05 C 3.0E-05 X 1 0.1 DDD, p,p`- (DDD)72-54-8 1.9E+00 n 9.6E+00 c** 4.1E-02 c 1.8E-01 c 3.2E-02 c**7.5E-03 c** 3.4E-01 I 9.7E-05 C 3.0E-04 X V 1 DDE, p,p'-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 3.4E-01 I 9.7E-05 I 5.0E-04 I 1 0.03 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* 3.0E-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 1.8E-02 C 5.1E-06 C 1.5E-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 7.0E-04 I 7.0E-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** 4.0E-05 I 1 0.1 Demeton 8065-48-3 2.5E+00 n 3.3E+01 n 4.2E-01 n 1.2E-03 I 6.0E-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 6.1E-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 7.0E-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 1.0E-02 X V 1 Dibenzothiophene 132-65-0 7.8E+02 n 1.2E+04 n 6.5E+01 n 1.2E+00 n 8.0E-01 P 6.0E-03 P 2.0E-04 P 2.0E-04 I V M 1 9.8E+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 1 0.1 Dibromoacetic acid 631-64-1 6.0E+01(G) 1.2E-02 4.0E-04 X V 1 1.6E+02 Dibromobenzene, 1,3-108-36-1 3.1E+01 n 4.7E+02 ns 5.3E+00 n 5.1E-03 n 1.0E-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 8.4E-02 I 2.0E-02 I V 1 8.0E+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 2.0E+00 I 6.0E-04 I 9.0E-03 I 9.0E-03 I V 1 1.3E+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 4.0E-03 X V 1 2.8E+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 3.0E-04 P 1 0.1 Dibutyltin Compounds E1790660 1.9E+01 n 2.5E+02 n 6.0E+00 n 3.0E-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 Dichloramine 3400-09-7 4.0E+03(G) 4.2E-03 P V 1 5.5E+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 4.2E-03 P V 1 5.2E+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 4.2E-03 P V 1 7.6E+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 5.0E-02 I 4.0E-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 9.0E-02 I 2.0E-01 H V 1 3.8E+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 5.4E-03 C 1.1E-05 C 7.0E-02 A 8.0E-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 4.5E-01 I 3.4E-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 9.0E-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 2.0E-01 I 1.0E-01 X V 1 8.5E+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 5.7E-03 C 1.6E-06 C 2.0E-01 P V 1 1.7E+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 9.1E-02 I 2.6E-05 I 6.0E-03 X 7.0E-03 P V 1 3.0E+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 5.0E-02 I 2.0E-01 I V 1 1.2E+03 Dichloroethylene, 1,1-75-35-4 2.3E+02 n 1.0E+03 n 2.1E+02 n 8.8E+02 n 2.8E+02 n 7.0E+00 1.0E-01 n 2.5E-03 Page 3 of 11 TR = 1 E - 0 6 TH Q = 1 . 0 Regional Screening Level (RSL) Summary Table (TR=1E-06, HQ=1) November 2021 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 Tapwater (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; C = Cal EPA; X = PPRTV Screening Level; H = HEAST; W = TEF applied; E = RPF applied; G = user's guide Section 5; M = mutagen; V = volatile; R = RBA applied ; c = cancer; n = noncancer; * = where: n SL < 100X c SL; ** = where n SL < 10X c SL; SSL values are based on DAF=1; m = ceiling limit exceeded; s = Csat exceeded. Toxicity and Chemical-specific Information Contaminant Screening Levels Protection of Ground Water SSLs 2.0E-03 I V 1 2.4E+03 Dichloroethylene, cis-1,2-156-59-2 1.6E+02 n 2.3E+03 n 3.6E+01 n 7.0E+01 1.1E-02 n 2.1E-02 2.0E-02 I 4.0E-02 X V 1 1.9E+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 3.0E-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 1.0E-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 3.7E-02 P 3.7E-06 P 4.0E-02 P 4.0E-03 I V 1 1.4E+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 2.0E-02 P V 1 1.5E+03 Dichloropropane, 1,3-142-28-9 1.6E+03 ns 2.3E+04 ns 3.7E+02 n 1.3E-01 n 3.0E-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 1.0E-01 I 4.0E-06 I 3.0E-02 I 2.0E-02 I V 1 1.6E+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* 2.9E-01 I 8.3E-05 C 5.0E-04 I 5.0E-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* 3.0E-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 8.0E-02 P 3.0E-04 X V 1 2.6E+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 1.6E+01 I 4.6E-03 I 5.0E-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 3.0E-04 C 5.0E-03 I 1 0.1 Diesel Engine Exhaust E17136615 9.4E-03 c 4.1E-02 c 2.0E-03 P 2.0E-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 3.0E-02 P 1.0E-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 6.0E-02 P 3.0E-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 1.0E-03 P V 1 1.1E+05 Diethylformamide 617-84-5 7.8E+01 n 1.2E+03 n 2.0E+01 n 4.1E-03 n 3.5E+02 C 1.0E-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 8.3E-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 2.0E-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 4.0E+01 I V 1 1.4E+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 3.0E+01 X V 1 6.9E+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 4.4E-02 C 1.3E-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 7.0E-01 P V 1 2.3E+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 8.0E-02 I V 1 5.3E+02 Diisopropyl Methylphosphonate 1445-75-6 6.3E+03 ns 9.3E+04 ns 1.6E+03 n 4.5E-01 n 2.2E-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 2.2E-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 1.6E+00 P 1 0.1 Dimethoxybenzidine, 3,3'-119-90-4 3.4E-01 c 1.4E+00 c 4.7E-02 c 5.8E-05 c 1.7E-03 P 6.0E-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* 4.6E+00 C 1.3E-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 5.8E-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 2.0E-01 P 2.0E-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 2.7E-02 P 2.0E-03 I V 1 8.3E+02 Dimethylaniline, N,N-121-69-7 2.6E+01 c** 1.2E+02 c* 2.5E+00 c*9.0E-04 c* 1.1E+01 P 1 0.1 Dimethylbenzidine, 3,3'-119-93-7 4.9E-02 c 2.1E-01 c 6.5E-03 c 4.3E-05 c 1.0E-01 P 3.0E-02 I V 1 1.1E+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 1.0E-04 X 2.0E-06 X V 1 1.7E+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 5.5E+02 C 1.6E-01 C V 1 1.9E+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 2.0E-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 6.0E-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 1.0E-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 4.5E-02 C 1.3E-05 C V 1 4.7E+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 8.0E-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 2.0E-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 4.0E-04 X 2.0E-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 1.0E-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 1.0E-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 1.0E-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 2.0E-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 6.8E-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 3.1E-01 C 8.9E-05 C 2.0E-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 1.5E+00 P 3.0E-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 1.0E-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 1.0E-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 4.5E-01 X 9.0E-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 1.0E-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 1.0E-01 I 5.0E-06 I 3.0E-02 I 3.0E-02 I V 1 1.2E+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 6.2E+03 I 1.3E+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 1.3E+05 C 3.8E+01 C 7.0E-10 I 4.0E-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 3.0E-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 4.0E-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 8.0E-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 1.0E-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 8.0E-01 I 2.2E-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 2.2E-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 7.4E+00 C 2.1E-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 7.4E+00 C 2.1E-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 6.7E+00 C 1.9E-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 4.0E-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 1.0E-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 2.0E-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 2.0E-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 5.0E-02 O V 1 EPTC 759-94-4 3.9E+03 n 5.8E+04 n 7.5E+02 n 4.0E-01 n 6.0E-03 I V 1 Endosulfan 115-29-7 4.7E+02 n 7.0E+03 n 1.0E+02 n 1.4E+00 n 6.0E-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 2.0E-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 3.0E-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 Page 4 of 11 TR = 1 E - 0 6 TH Q = 1 . 0 Regional Screening Level (RSL) Summary Table (TR=1E-06, HQ=1) November 2021 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 Tapwater (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; C = Cal EPA; X = PPRTV Screening Level; H = HEAST; W = TEF applied; E = RPF applied; G = user's guide Section 5; M = mutagen; V = volatile; R = RBA applied ; c = cancer; n = noncancer; * = where: n SL < 100X c SL; ** = where n SL < 10X c SL; SSL values are based on DAF=1; m = ceiling limit exceeded; s = Csat exceeded. Toxicity and Chemical-specific Information Contaminant Screening Levels Protection of Ground Water SSLs 9.9E-03 I 1.2E-06 I 6.0E-03 P 1.0E-03 I V 1 1.1E+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 2.0E-02 I V 1 1.5E+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 4.0E-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 5.0E-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 5.0E-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 1.0E-01 P 6.0E-02 P V 1 2.4E+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 9.0E-02 P 4.0E-02 P V 1 1.1E+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 7.0E-01 P 7.0E-02 P V 1 1.1E+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 5.0E-03 P 8.0E-03 P V 1 2.5E+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 4.0E+00 P V 1 2.1E+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 2.0E-01 I V 1 1.0E+04 Ethyl Ether 60-29-7 1.6E+04 ns 2.3E+05 nms 3.9E+03 n 8.8E-01 n 3.0E-01 P V 1 1.1E+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 8.0E-08 I 1.0E+00 I 4.0E+01 I V 1 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 1.0E-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 1.1E-02 C 2.5E-06 C 5.0E-02 P 1.0E+00 I V 1 4.8E+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 7.0E-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 9.0E-02 P V 1 1.9E+05 Ethylene Diamine 107-15-3 7.0E+03 n 1.1E+05 nm 1.8E+03 n 4.1E-01 n 8.0E-01 A 4.0E-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 1.0E-01 I 1.6E+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 3.1E-01 C 3.0E-03 I 3.0E-02 C V M 1 1.2E+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 4.5E-02 C 1.3E-05 C 8.0E-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 6.5E+01 C 1.9E-02 C V 1 1.5E+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 3.0E+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 2.5E-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 2.5E-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 2.5E-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 1.3E-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 4.0E-02 C 1.3E-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 6.0E-02 I 1.3E-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 8.0E-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 4.0E-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 2.0E-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 5.0E-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 1.0E-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 9.0E-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 1.0E-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 2.0E-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 2.1E-02 C 1.3E-05 I 2.0E-01 I 9.8E-03 A V 1 4.2E+04 Formaldehyde 50-00-0 1.1E+01 c* 5.0E+01 c* 2.2E-01 c* 9.4E-01 c* 3.9E-01 c*7.8E-05 c* 9.0E-01 P 3.0E-04 X V 1 1.1E+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 2.5E+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 1.0E-03 X V 1 ~Dibenzofuran 132-64-9 7.8E+01 n 1.2E+03 n 7.9E+00 n 1.5E-01 n 1.0E-03 I V 1 6.2E+03 ~Furan 110-00-9 7.8E+01 n 1.2E+03 n 1.9E+01 n 7.3E-03 n 9.0E-01 I 2.0E+00 I V 1 1.7E+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 3.8E+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 3.0E-03 I 5.0E-02 H V 1 1.0E+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 1.5E+00 C 4.3E-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 3.0E-02 I 8.6E-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 6.0E-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 1.0E-01 A 8.0E-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 4.0E-04 I 1.0E-03 X V 1 1.1E+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 1.0E-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 1.0E-02 X V 1 Guanidine 113-00-8 7.8E+02 n 1.2E+04 n 2.0E+02 n 4.5E-02 n 2.0E-02 P 1 0.1 Guanidine Chloride 50-01-1 1.3E+03 n 1.6E+04 n 4.0E+02 n 3.0E-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 5.0E-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 4.5E+00 I 1.3E-03 I 1.0E-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 9.1E+00 I 2.6E-03 I 1.3E-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 3.0E-03 X V 1 2.1E+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 3.0E-04 X 4.0E-01 P V 1 5.8E+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 2.0E-03 I V 1 Hexabromobenzene 87-82-1 1.6E+02 n 2.3E+03 n 4.0E+01 n 2.3E-01 n 2.0E-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 1.6E+00 I 4.6E-04 I 1.0E-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 7.8E-02 I 2.2E-05 I 1.0E-03 P V 1 1.7E+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* 6.3E+00 I 1.8E-03 I 8.0E-03 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 1.8E+00 I 5.3E-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 1.1E+00 C 3.1E-04 C 1.0E-05 A 1 0.04 Hexachlorocyclohexane, Gamma- (Lindane)58-89-9 5.7E-01 c** 2.5E+00 c** 9.1E-03 c 4.0E-02 c 4.2E-02 c** 2.0E-01 2.4E-04 c** 1.2E-03 1.8E+00 I 5.1E-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 6.0E-03 I 2.0E-04 I V 1 1.6E+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 4.0E-02 I 1.1E-05 C 7.0E-04 I 3.0E-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* 3.0E-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 8.0E-02 I 4.0E-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* 1.0E-05 I V 1 3.4E+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 4.0E-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 4.0E-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 4.0E-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 2.0E-07 X 6.0E-01 P V 1 1.4E+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* Page 5 of 11 TR = 1 E - 0 6 TH Q = 1 . 0 Regional Screening Level (RSL) Summary Table (TR=1E-06, HQ=1) November 2021 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 Tapwater (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; C = Cal EPA; X = PPRTV Screening Level; H = HEAST; W = TEF applied; E = RPF applied; G = user's guide Section 5; M = mutagen; V = volatile; R = RBA applied ; c = cancer; n = noncancer; * = where: n SL < 100X c SL; ** = where n SL < 10X c SL; SSL values are based on DAF=1; m = ceiling limit exceeded; s = Csat exceeded. Toxicity and Chemical-specific Information Contaminant Screening Levels Protection of Ground Water SSLs 7.0E-01 I V 1 1.4E+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 2.0E+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 9.5E-03 P 7.0E-02 P 4.0E-04 P V 1 2.7E+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 5.0E-03 I 3.0E-02 I V 1 3.3E+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 3.3E-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 2.5E-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 1.7E-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 3.0E+00 I 4.9E-03 I 3.0E-05 P V 1 1.1E+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* 3.0E+00 I 4.9E-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 2.0E-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 4.0E-02 C 1.4E-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 2.0E-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 6.0E-02 P 4.0E-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 6.1E-02 O 1.1E-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 2.5E-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 2.5E+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 1.0E-02 A 1 Iodine 7553-56-2 7.8E+02 n 1.2E+04 n 2.0E+02 n 1.2E+01 n 4.0E-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 7.0E-01 P 1 Iron 7439-89-6 5.5E+04 n 8.2E+05 nm 1.4E+04 n 3.5E+02 n 3.0E-01 I V 1 1.0E+04 Isobutyl Alcohol 78-83-1 2.3E+04 ns 3.5E+05 nms 5.9E+03 n 1.2E+00 n 9.5E-04 I 2.0E-01 I 2.0E+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* 1.5E-02 I V 1 Isopropalin 33820-53-0 1.2E+03 n 1.8E+04 n 4.0E+01 n 9.2E-01 n 2.0E+00 P 2.0E-01 P V 1 1.1E+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 1.0E-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 5.0E-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 3.0E-01 A V 1 JP-7 E1737665 4.3E+08 nm 1.8E+09 nm 3.1E+02 n 1.3E+03 n 6.3E+02 n 8.0E-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 2.0E-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 5.0E-05 P 1 Lanthanum 7439-91-0 3.9E+00 n 5.8E+01 n 1.0E+00 n 2.1E-05 P 1 0.1 Lanthanum Acetate Hydrate 100587-90-4 1.3E+00 n 1.7E+01 n 4.2E-01 n 1.9E-05 P 1 Lanthanum Chloride Heptahydrate 10025-84-0 1.5E+00 n 2.2E+01 n 3.7E-01 n 2.8E-05 P 1 Lanthanum Chloride, Anhydrous 10099-58-8 2.2E+00 n 3.3E+01 n 5.7E-01 n 1.6E-05 P 1 Lanthanum Nitrate Hexahydrate 10277-43-7 1.3E+00 n 1.9E+01 n 3.2E-01 n Lead Compounds 8.5E-03 C 1.2E-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 2.1E-01 C 8.0E-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 4.0E+02 G 8.0E+02 G 1.5E-01 G 1.5E+01 G 1.5E+01 1.4E+01 3.8E-02 C 1.1E-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 1.0E-07 I V 1 2.4E+00 ~Tetraethyl Lead 78-00-2 7.8E-03 n 1.2E-01 n 1.3E-03 n 4.7E-06 n 5.0E-06 P V 1 3.8E+02 Lewisite 541-25-3 3.9E-01 n 5.8E+00 n 9.0E-02 n 3.8E-05 n 7.7E-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 2.0E-03 P 1 Lithium 7439-93-2 1.6E+02 n 2.3E+03 n 4.0E+01 n 1.2E+01 n 5.0E-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 4.4E-03 O 1 0.1 MCPB 94-81-5 2.8E+02 n 3.6E+03 n 6.5E+01 n 2.6E-02 n 1.0E-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 2.0E-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 1.0E-01 I 7.0E-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 5.0E-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 1.0E-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 3.0E-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 5.0E-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 1.4E-01 I 5.0E-05 I 1 Manganese (Diet)7439-96-5 5.2E-02 n 2.2E-01 n 2.4E-02 G 5.0E-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 9.0E-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 3.0E-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 1.1E-02 P 4.0E-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 3.0E-04 I 3.0E-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 3.0E-04 I V 1 3.1E+00 ~Mercury (elemental)7439-97-6 1.1E+01 ns 4.6E+01 ns 3.1E-01 n 1.3E+00 n 6.3E-01 n 2.0E+00 3.3E-02 n 1.0E-01 1.0E-04 I 1 ~Methyl Mercury 22967-92-6 7.8E+00 n 1.2E+02 n 2.0E+00 n 1.4E+01 n 8.0E-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 3.0E-05 I V 1 Merphos 150-50-5 2.3E+00 n 3.5E+01 n 6.0E-01 n 5.9E-02 n 6.0E-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 1.0E-04 I 3.0E-02 P V 1 4.6E+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 5.0E-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 2.0E+00 I 2.0E+01 I V 1 1.1E+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 1.5E-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 2.5E-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 4.9E-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 5.0E-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 8.0E-03 P 1.0E-03 P V 1 1.2E+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 5.0E-03 P 7.0E-03 P V 1 1.1E+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 1.0E+00 X V 1 2.9E+04 Methyl Acetate 79-20-9 7.8E+04 ns 1.2E+06 nms 2.0E+04 n 4.1E+00 n 2.0E-02 P V 1 6.8E+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 6.0E-01 I 5.0E+00 I V 1 2.8E+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 1.0E-03 X 1.0E-03 P 2.0E-05 X V 1 1.8E+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** 3.0E+00 I V 1 3.4E+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 Page 6 of 11 TR = 1 E - 0 6 TH Q = 1 . 0 Regional Screening Level (RSL) Summary Table (TR=1E-06, HQ=1) November 2021 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 Tapwater (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; C = Cal EPA; X = PPRTV Screening Level; H = HEAST; W = TEF applied; E = RPF applied; G = user's guide Section 5; M = mutagen; V = volatile; R = RBA applied ; c = cancer; n = noncancer; * = where: n SL < 100X c SL; ** = where n SL < 10X c SL; SSL values are based on DAF=1; m = ceiling limit exceeded; s = Csat exceeded. Toxicity and Chemical-specific Information Contaminant Screening Levels Protection of Ground Water SSLs 1.0E-03 C V 1 1.0E+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 1.4E+00 I 7.0E-01 I V 1 2.4E+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 2.5E-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 6.0E-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 6.0E-03 H 4.0E-02 H V 1 3.9E+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 9.9E-02 C 2.8E-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 1.8E-03 C 2.6E-07 C 3.0E+00 I V 1 8.9E+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 3.0E-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 3.0E+00 X V 1 2.5E+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 9.0E-03 P 2.0E-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* 8.3E+00 C 2.4E-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 1.3E-01 C 3.7E-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 1.0E-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 2.0E-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 1.0E-01 X 3.0E-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** 2.2E+01 C 6.3E-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 2.0E-03 I 1.0E-08 I 6.0E-03 I 6.0E-01 I V M 1 3.3E+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 1.0E-01 P 4.3E-04 C 2.0E-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 4.6E-02 I 1.3E-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 1.6E+00 C 4.6E-04 C 2.0E-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 6.0E-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 7.0E-02 H V 1 5.0E+02 Methylstyrene, Alpha-98-83-9 5.5E+03 ns 8.2E+04 ns 7.8E+02 n 1.2E+00 n 1.5E-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 2.5E-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 2.5E-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 4.5E-06 X 1.0E-02 X 1.0E-01 P V 1 6.9E+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* 3.0E+00 P V 1 3.4E-01 Mineral oils 8012-95-1 2.3E+05 nms 3.5E+06 nms 6.0E+04 n 2.4E+03 n 1.8E+01 C 5.1E-03 C 2.0E-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 2.0E-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 5.0E-03 I 2.0E-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 1.0E-01 I 1 Monochloramine 10599-90-3 7.8E+03 n 1.2E+05 nm 2.0E+03 n 4.0E+03(G) 2.0E-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 2.5E-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 3.0E-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 2.0E-03 I V 1 Naled 300-76-5 1.6E+02 n 2.3E+03 n 4.0E+01 n 1.8E-02 n 3.0E-02 X 1.0E-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 1.8E+00 C 0.0E+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 1.2E-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 2.6E-04 C 1.1E-02 C 1.4E-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 2.6E-04 C 1.1E-02 C 1.4E-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 2.6E-04 C 1.1E-02 C 1.4E-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** 2.6E-04 C 1.1E-02 C 1.4E-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 2.6E-04 C 1.1E-02 C 2.0E-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 2.4E-04 I 1.1E-02 C 1.4E-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 2.6E-04 C 2.0E-02 I 9.0E-05 A 0.04 Nickel Soluble Salts 7440-02-0 1.5E+03 n 2.2E+04 n 1.1E-02 c** 4.7E-02 c** 3.9E+02 n 2.6E+01 n 1.7E+00 C 4.8E-04 I 1.1E-02 C 1.4E-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 9.1E-01 C 2.6E-04 C 1.1E-02 C 1.4E-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 1.6E+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 1.0E-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 1.0E-02 X 5.0E-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 2.0E-02 P 4.0E-03 P 6.0E-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* 4.0E-05 I 2.0E-03 I 9.0E-03 I V 1 3.1E+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* 3.0E+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 7.0E-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 1.3E+00 C 3.7E-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 1.7E-02 P 1.0E-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 1.0E-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 8.8E-06 P 5.0E-03 P V 1 1.8E+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* 5.8E-04 X 2.0E-02 I V 1 4.9E+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 2.7E+01 C 7.7E-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 1.2E+02 C 3.4E-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 5.4E+00 I 1.6E-03 I V 1 Nitroso-di-N-butylamine, 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 7.0E+00 I 2.0E-03 C 1 0.1 Nitroso-di-N-propylamine, 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 2.8E+00 I 8.0E-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 1.5E+02 I 4.3E-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 5.1E+01 I 1.4E-02 I 8.0E-06 P 4.0E-05 X V M 1 2.4E+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 4.9E-03 I 2.6E-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 2.2E+01 I 6.3E-03 C V 1 1.1E+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 6.7E+00 C 1.9E-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 9.4E+00 C 2.7E-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 2.1E+00 I 6.1E-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 1.0E-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 2.2E-01 P 9.0E-04 P V 1 1.5E+03 Nitrotoluene, o-88-72-2 3.2E+00 c* 1.5E+01 c* 3.1E-01 c*3.0E-04 c* 1.6E-02 P 4.0E-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* 3.0E-04 X 2.0E-02 P V 1 6.9E+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 1.5E-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 Page 7 of 11 TR = 1 E - 0 6 TH Q = 1 . 0 Regional Screening Level (RSL) Summary Table (TR=1E-06, HQ=1) November 2021 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 Tapwater (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; C = Cal EPA; X = PPRTV Screening Level; H = HEAST; W = TEF applied; E = RPF applied; G = user's guide Section 5; M = mutagen; V = volatile; R = RBA applied ; c = cancer; n = noncancer; * = where: n SL < 100X c SL; ** = where n SL < 10X c SL; SSL values are based on DAF=1; m = ceiling limit exceeded; s = Csat exceeded. Toxicity and Chemical-specific Information Contaminant Screening Levels Protection of Ground Water SSLs 3.0E-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 5.0E-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 2.0E-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 7.8E-03 O 1.9E-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 5.0E-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 2.5E-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 7.3E-02 O 4.0E-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 1.3E-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 4.5E-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 6.0E-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 5.0E-02 H V 1 Pebulate 1114-71-2 3.9E+03 n 5.8E+04 n 5.6E+02 n 4.5E-01 n 3.0E-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 2.0E-03 I V 1 3.1E-01 Pentabromodiphenyl Ether 32534-81-9 1.6E+02 ns 2.3E+03 ns 4.0E+01 n 1.7E+00 n 1.0E-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 8.0E-04 I V 1 Pentachlorobenzene 608-93-5 6.3E+01 n 9.3E+02 n 3.2E+00 n 2.4E-02 n 9.0E-02 P V 1 4.6E+02 Pentachloroethane 76-01-7 7.7E+00 c 3.6E+01 c 6.5E-01 c 3.1E-04 c 2.6E-01 H 3.0E-03 I V 1 Pentachloronitrobenzene 82-68-8 2.7E+00 c* 1.3E+01 c 1.2E-01 c 1.5E-03 c 4.0E-01 I 5.1E-06 C 5.0E-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 4.3E-03 X 9.0E-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** 1.0E-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 1.0E+00 P V 1 3.9E+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) 3.0E-04 P 1 0.1 ~Perfluorobutanesulfonate 45187-15-3 1.9E+01 n 2.5E+02 n 6.0E+00 n 1.9E-03 n 3.0E-04 P 1 0.1 ~Perfluorobutanesulfonic acid (PFBS)375-73-5 1.9E+01 n 2.5E+02 n 6.0E+00 n 1.9E-03 n 3.0E-04 P 1 0.1 ~Potassium Perfluorobutane Sulfonate 29420-49-3 1.9E+01 n 2.5E+02 n 6.0E+00 n 3.0E-03 n Perchlorates 7.0E-04 I 1 ~Ammonium Perchlorate 7790-98-9 5.5E+01 n 8.2E+02 n 1.4E+01 n 7.0E-04 I 1 ~Lithium Perchlorate 7791-03-9 5.5E+01 n 8.2E+02 n 1.4E+01 n 7.0E-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) 7.0E-04 I 1 ~Potassium Perchlorate 7778-74-7 5.5E+01 n 8.2E+02 n 1.4E+01 n 7.0E-04 I 1 ~Sodium Perchlorate 7601-89-0 5.5E+01 n 8.2E+02 n 1.4E+01 n 5.0E-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 2.2E-03 C 6.3E-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 2.4E-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 3.0E-01 I 2.0E-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 4.0E-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 5.0E-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 2.0E-04 X V 1 1.3E+02 Phenyl Isothiocyanate 103-72-0 1.6E+01 n 2.3E+02 ns 2.6E+00 n 1.7E-03 n 6.0E-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 1.2E-01 P 4.0E-03 P 1 0.1 Phenylenediamine, o-95-54-5 4.5E+00 c* 1.9E+01 c 6.5E-01 c 1.7E-04 c 1.0E-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 1.9E-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 2.0E-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 3.0E-04 I V 1 1.6E+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 2.0E-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 3.0E-04 I 3.0E-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 1.0E-02 I 1 Phosphoric Acid 7664-38-2 1.4E+07 nm 6.0E+07 nm 1.0E+01 n 4.4E+01 n 2.0E-05 I V 1 Phosphorus, White 7723-14-0 1.6E+00 n 2.3E+01 n 4.0E-01 n 1.5E-03 n Phthalates 1.4E-02 I 2.4E-06 C 2.0E-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 1.9E-03 P 2.0E-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 1.0E+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 1.0E-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 8.0E-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 1.0E-01 I V 1 ~Dimethylterephthalate 120-61-6 7.8E+03 n 1.2E+05 nm 1.9E+03 n 4.9E-01 n 1.0E-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 5.0E-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 2.0E+00 I 2.0E-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 7.0E-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 1.0E-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 2.0E-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 7.3E-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 3.0E+01 C 8.6E-03 C 7.0E-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) 7.0E-02 G 2.0E-05 G 7.0E-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** 2.0E+00 G 5.7E-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 2.0E+00 G 5.7E-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 2.0E+00 G 5.7E-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 2.0E+00 G 5.7E-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 2.0E+00 G 5.7E-04 G 2.0E-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* 2.0E+00 G 5.7E-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 6.0E-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 3.9E+00 W 1.1E-03 W 2.3E-05 W 1.3E-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 3.9E+00 W 1.1E-03 W 2.3E-05 W 1.3E-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 3.9E+00 W 1.1E-03 W 2.3E-05 W 1.3E-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 3.9E+00 W 1.1E-03 W 2.3E-05 W 1.3E-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 3.9E+03 W 1.1E+00 W 2.3E-08 W 1.3E-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 Page 8 of 11 TR = 1 E - 0 6 TH Q = 1 . 0 Regional Screening Level (RSL) Summary Table (TR=1E-06, HQ=1) November 2021 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 Tapwater (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; C = Cal EPA; X = PPRTV Screening Level; H = HEAST; W = TEF applied; E = RPF applied; G = user's guide Section 5; M = mutagen; V = volatile; R = RBA applied ; c = cancer; n = noncancer; * = where: n SL < 100X c SL; ** = where n SL < 10X c SL; SSL values are based on DAF=1; m = ceiling limit exceeded; s = Csat exceeded. Toxicity and Chemical-specific Information Contaminant Screening Levels Protection of Ground Water SSLs 3.9E+00 W 1.1E-03 W 2.3E-05 W 1.3E-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 3.9E+00 W 1.1E-03 W 2.3E-05 W 1.3E-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 3.9E+00 W 1.1E-03 W 2.3E-05 W 1.3E-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 3.9E+00 W 1.1E-03 W 2.3E-05 W 1.3E-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 1.3E+04 W 3.8E+00 W 7.0E-09 W 4.0E-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 2.0E+00 I 5.7E-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 4.0E-01 I 1.0E-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 7.0E-02 I 2.0E-05 I V 1 0.14 ~Polychlorinated Biphenyls (lowest risk)1336-36-3 1.4E-01 c 6.1E-01 c 5.0E-01 1.3E+01 W 3.8E-03 W 7.0E-06 W 4.0E-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* 3.9E+01 W 1.1E-02 W 2.3E-06 W 1.3E-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 6.0E-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) 6.0E-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 3.0E-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 1.0E-01 E 6.0E-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 1.2E+00 C 1.1E-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 1.0E+00 I 6.0E-04 I 3.0E-04 I 2.0E-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 1.0E-01 E 6.0E-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 1.0E-02 E 6.0E-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 8.0E-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 1.0E-03 E 6.0E-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 1.0E+00 E 6.0E-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 1.2E+01 C 1.1E-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 2.5E+02 C 7.1E-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 4.0E-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 4.0E-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 1.0E-01 E 6.0E-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 2.9E-02 P 7.0E-02 A V 1 0.13 3.9E+02 ~Methylnaphthalene, 1-90-12-0 1.8E+01 c 7.3E+01 c 1.1E+00 c 6.0E-03 c 4.0E-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 1.2E-01 C 3.4E-05 C 2.0E-02 I 3.0E-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* 1.2E+00 C 1.1E-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 3.0E-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 1.5E-01 I 9.0E-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 6.0E-03 H V 1 Profluralin 26399-36-0 4.7E+02 n 7.0E+03 n 2.6E+01 n 1.6E+00 n 1.5E-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 4.0E-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 7.5E-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 1.3E-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 5.0E-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 1.9E-01 O 4.0E-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 2.0E-03 I V 1 1.1E+05 Propargyl Alcohol 107-19-7 1.6E+02 n 2.3E+03 n 4.0E+01 n 8.1E-03 n 2.0E-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 2.0E-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 1.0E-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 8.0E-03 I V 1 3.3E+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 1.0E-01 X 1.0E+00 X V 1 2.6E+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 3.0E+00 C V 1 3.5E+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 2.0E+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 2.7E-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 7.0E-01 H 2.0E+00 I V 1 1.1E+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 2.4E-01 I 3.7E-06 I 3.0E-02 I V 1 7.8E+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 1.0E-03 I V 1 5.3E+05 Pyridine 110-86-1 7.8E+01 n 1.2E+03 n 2.0E+01 n 6.8E-03 n 5.0E-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 3.0E+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 9.0E-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 3.0E+04 A 1 Refractory Ceramic Fibers (units in fibers)E715557 3.1E+04 G 1.3E+05 G 3.0E-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 5.0E-02 H V 1 Ronnel 299-84-3 3.9E+03 n 5.8E+04 n 4.1E+02 n 3.7E+00 n 4.0E-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 2.2E-01 C 6.3E-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 5.0E-03 I 1 Selenious Acid 7783-00-8 3.9E+02 n 5.8E+03 n 1.0E+02 n 5.0E-03 I 2.0E-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 5.0E-03 C 2.0E-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 1.4E-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 3.0E-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 5.0E-03 I 0.04 Silver 7440-22-4 3.9E+02 n 5.8E+03 n 9.4E+01 n 8.0E-01 n 1.2E-01 H 5.0E-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 1.3E-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 4.0E-03 I 1 Sodium Azide 26628-22-8 3.1E+02 n 4.7E+03 n 8.0E+01 n 2.7E-01 H 3.0E-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 5.0E-02 A 1.3E-02 C 1 Sodium Fluoride 7681-49-4 3.9E+03 n 5.8E+04 n 1.4E+01 n 5.7E+01 n 1.0E+03 n 4.0E+03 1.5E+02 n 6.0E+02 2.0E-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 1.0E-03 H 1 Sodium Metavanadate 13718-26-8 7.8E+01 n 1.2E+03 n 2.0E+01 n 8.0E-04 P 1 Sodium Tungstate 13472-45-2 6.3E+01 n 9.3E+02 n 1.6E+01 n 8.0E-04 P 1 Sodium Tungstate Dihydrate 10213-10-2 6.3E+01 n 9.3E+02 n 1.6E+01 n 2.4E-02 H 3.0E-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 6.0E-01 I 1 Strontium, Stable 7440-24-6 4.7E+04 n 7.0E+05 nm 1.2E+04 n 4.2E+02 n Page 9 of 11 TR = 1 E - 0 6 TH Q = 1 . 0 Regional Screening Level (RSL) Summary Table (TR=1E-06, HQ=1) November 2021 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 Tapwater (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; C = Cal EPA; X = PPRTV Screening Level; H = HEAST; W = TEF applied; E = RPF applied; G = user's guide Section 5; M = mutagen; V = volatile; R = RBA applied ; c = cancer; n = noncancer; * = where: n SL < 100X c SL; ** = where n SL < 10X c SL; SSL values are based on DAF=1; m = ceiling limit exceeded; s = Csat exceeded. Toxicity and Chemical-specific Information Contaminant Screening Levels Protection of Ground Water SSLs 3.0E-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 2.0E-01 I 1.0E+00 I V 1 8.7E+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 3.0E-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 3.0E-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 1.0E-03 P 2.0E-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 8.0E-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 1.0E-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 1.0E-03 C 1 Sulfuric Acid 7664-93-9 1.4E+06 nm 6.0E+06 nm 1.0E+00 n 4.4E+00 n 2.5E-02 I 7.1E-06 I 5.0E-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 3.0E-02 H 1 0.1 TCMTB 21564-17-0 1.9E+03 n 2.5E+04 n 4.8E+02 n 3.3E+00 n 7.0E-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 2.0E-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 1.3E-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 2.5E-05 H V 1 3.1E+01 Terbufos 13071-79-9 2.0E+00 n 2.9E+01 n 2.4E-01 n 5.2E-04 n 1.0E-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 5.0E-03 C 1.3E-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 1.0E-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 3.0E-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 2.6E-02 I 7.4E-06 I 3.0E-02 I V 1 6.8E+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 2.0E-01 I 5.8E-05 C 2.0E-02 I V 1 1.9E+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 2.1E-03 I 2.6E-07 I 6.0E-03 I 4.0E-02 I V 1 1.7E+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 3.0E-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 1.6E+01 X 6.0E-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 5.0E-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 8.0E+01 I V 1 2.1E+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 1.0E-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 2.0E-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 2.0E-05 G 1 Thallic Oxide 1314-32-5 1.6E+00 n 2.3E+01 n 4.0E-01 n 1.0E-05 X 1 Thallium (I) Nitrate 10102-45-1 7.8E-01 n 1.2E+01 n 2.0E-01 n 1.0E-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 1.0E-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 2.0E-05 X V 1 Thallium Carbonate 6533-73-9 1.6E+00 n 2.3E+01 n 4.0E-01 n 8.3E-05 n 1.0E-05 X 1 Thallium Chloride 7791-12-0 7.8E-01 n 1.2E+01 n 2.0E-01 n 1.0E-05 G 1 Thallium Selenite 12039-52-0 7.8E-01 n 1.2E+01 n 2.0E-01 n 2.0E-05 X 1 Thallium Sulfate 7446-18-6 1.6E+00 n 2.3E+01 n 4.0E-01 n 4.3E-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 1.0E-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 7.0E-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 3.0E-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 1.2E-02 O 1.6E-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 1.5E-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 6.0E-01 H 1 Tin 7440-31-5 4.7E+04 n 7.0E+05 nm 1.2E+04 n 3.0E+03 n 1.0E-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 8.0E-02 I 5.0E+00 I V 1 8.2E+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 3.9E-02 C 1.1E-05 C 8.0E-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 1.8E-01 X 2.0E-04 X 1 0.1 Toluene-2,5-diamine 95-70-5 3.0E+00 c** 1.3E+01 c* 4.3E-01 c**1.3E-04 c** 3.9E-02 C 1.1E-05 C 8.0E-06 C V 1 1.7E+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 1.0E-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 1.0E-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 5.0E-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 1.6E-02 P 5.1E-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 3.0E-02 P 4.0E-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* 3.0E+00 P V 1 3.4E-01 Total Petroleum Hydrocarbons (Aliphatic High)E1790670 2.3E+05 nms 3.5E+06 nms 6.0E+04 n 2.4E+03 n 6.0E-01 P V 1 1.4E+02 Total Petroleum Hydrocarbons (Aliphatic Low)E1790666 5.2E+02 ns 2.2E+03 ns 6.3E+02 n 2.6E+03 n 1.3E+03 n 8.8E+00 n 1.0E-02 X 1.0E-01 P V 1 6.9E+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 4.0E-02 P 1 0.13 Total Petroleum Hydrocarbons (Aromatic High)E1790676 2.4E+03 n 3.0E+04 n 8.0E+02 n 8.9E+01 n 4.0E-03 P 3.0E-02 P V 1 1.8E+03 Total Petroleum Hydrocarbons (Aromatic Low)E1790672 8.2E+01 n 4.2E+02 n 3.1E+01 n 1.3E+02 n 3.3E+01 n 1.7E-02 n 4.0E-03 P 3.0E-03 P V 1 0.13 Total Petroleum Hydrocarbons (Aromatic Medium)E1790674 9.7E+01 n 5.6E+02 n 3.1E+00 n 1.3E+01 n 5.5E+00 n 2.3E-02 n 1.1E+00 I 3.2E-04 I 9.0E-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 3.0E-05 X 1 0.1 Toxaphene, Weathered E1841606 1.9E+00 n 2.5E+01 n 6.0E-01 n 9.3E-02 n 7.5E-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 3.0E-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 8.0E+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 3.4E-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 7.2E-02 O 2.5E-02 O V 1 Triallate 2303-17-5 9.7E+00 c 4.6E+01 c 4.7E-01 c 1.0E-03 c 1.0E-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 8.0E-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 5.0E-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 9.0E-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 2.0E-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 9.0E-03 P 1.0E-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* 3.0E-04 P 1 0.1 Tributyltin Compounds E1790678 1.9E+01 n 2.5E+02 n 6.0E+00 n 3.0E-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 Trichloramine 10025-85-1 4.0E+03(G) 3.0E+01 I 5.0E+00 P V 1 9.1E+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 7.0E-02 I 2.0E-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 2.9E-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 Page 10 of 11 TR = 1 E - 0 6 TH Q = 1 . 0 Regional Screening Level (RSL) Summary Table (TR=1E-06, HQ=1) November 2021 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 Tapwater (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; C = Cal EPA; X = PPRTV Screening Level; H = HEAST; W = TEF applied; E = RPF applied; G = user's guide Section 5; M = mutagen; V = volatile; R = RBA applied ; c = cancer; n = noncancer; * = where: n SL < 100X c SL; ** = where n SL < 10X c SL; SSL values are based on DAF=1; m = ceiling limit exceeded; s = Csat exceeded. Toxicity and Chemical-specific Information Contaminant Screening Levels Protection of Ground Water SSLs 7.0E-03 X 3.0E-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 8.0E-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 2.9E-02 P 1.0E-02 I 2.0E-03 P V 1 4.0E+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 2.0E+00 I 5.0E+00 I V 1 6.4E+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 5.7E-02 I 1.6E-05 I 4.0E-03 I 2.0E-04 X V 1 2.2E+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 4.6E-02 I 4.1E-06 I 5.0E-04 I 2.0E-03 I V M 1 6.9E+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 3.0E-01 I V 1 1.2E+03 Trichlorofluoromethane 75-69-4 2.3E+04 ns 3.5E+05 nms 5.2E+03 n 3.3E+00 n 1.0E-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 1.1E-02 I 3.1E-06 I 1.0E-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** 1.0E-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 8.0E-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 5.0E-03 I V 1 1.3E+03 Trichloropropane, 1,1,2-598-77-6 3.9E+02 n 5.8E+03 ns 8.8E+01 n 3.5E-02 n 3.0E+01 I 4.0E-03 I 3.0E-04 I V M 1 1.4E+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 3.0E-03 X 3.0E-04 P V 1 3.1E+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 2.0E-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 3.0E-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 7.0E-03 I V 1 2.8E+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 2.0E+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 2.0E+01 P V 1 4.8E+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 7.7E-03 I 7.5E-03 I V 1 Trifluralin 1582-09-8 9.0E+01 c** 4.2E+02 c* 2.6E+00 c*8.4E-02 c* 2.0E-02 P 1.0E-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* 1.0E-02 I 6.0E-02 I V 1 2.9E+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 1.0E-02 I 6.0E-02 I V 1 2.2E+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 1.0E-02 I 6.0E-02 I V 1 1.8E+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 1.0E-02 X V 1 3.0E+01 Trimethylpentene, 2,4,4-25167-70-8 7.8E+02 ns 1.2E+04 ns 3.8E+01 n 1.3E-01 n 3.0E-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 3.0E-02 I 5.0E-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** 2.0E-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 2.0E-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 1.0E-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 2.3E+00 C 6.6E-04 C V 1 4.7E+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 2.0E-02 P 7.0E-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* 3.2E-03 P 1.0E-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* 8.0E-04 P 1 Tungsten 7440-33-7 6.3E+01 n 9.3E+02 n 1.6E+01 n 2.4E+00 n 2.0E-04 A 4.0E-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 1.0E+00 C 2.9E-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 8.3E-03 P 9.0E-03 I 7.0E-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 5.0E-03 G 1.0E-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 1.0E-03 I V 1 Vernolate 1929-77-7 7.8E+01 n 1.2E+03 n 1.1E+01 n 8.9E-03 n 1.2E-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 1.0E+00 H 2.0E-01 I V 1 2.8E+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 1.5E-05 P 3.0E-03 I V 1 2.5E+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* 7.2E-01 I 4.4E-06 I 3.0E-03 I 8.0E-02 A V M 1 3.9E+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 3.0E-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 2.0E-01 G 1.0E-01 G V 1 3.9E+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 2.0E-01 G 1.0E-01 G V 1 4.3E+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 2.0E-01 G 1.0E-01 G V 1 3.9E+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 2.0E-01 I 1.0E-01 I V 1 2.6E+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 3.0E-04 I 1 Zinc Phosphide 1314-84-7 2.3E+01 n 3.5E+02 n 6.0E+00 n 3.0E-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 5.0E-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 8.0E-05 X 1 Zirconium 7440-67-7 6.3E+00 n 9.3E+01 n 1.6E+00 n 4.8E+00 n Page 11 of 11 TR = 1 E - 0 6 TH Q = 1 . 0 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 Engineering Attn: Michael Sauerwein 2800 South Redwood Road West Valley City, UT 84119-2375 Work Order: 22I1431 Project: 19219-3965 S. Washington Blvd, Ogden, UT 9/22/2022 Approved By: Reed Hendricks, Director of Operations 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 43 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 Engineering Michael Sauerwein 2800 South Redwood Road West Valley City, UT 84119-2375 PO#: Receipt: Date Reported: Project Name: 9/16/22 10:25 @ 6.1 °C 9/22/2022 19219-3965 S. Washington Blvd, Ogden, UT Sample ID: B1-12' Lab ID: 22I1431-01Matrix: Solid Flag(s)Units Analysis Date/Time Date Sampled: 9/15/22 9:55 Preparation Date/Time Sampled By: Michael Sauerwein Minimum Reporting Limit MethodResult Inorganic %9/19/229/16/220.1 EPA 8000C82.2Total Solids Diesel Range mg/kg dry 9/20/229/19/2261EPA 8015C/3550B114Diesel Range Organics Volatile Organic Compounds mg/kg dry 9/21/229/21/220.006 EPA 8260D /5030AND1,1,1,2-Tetrachloroethane mg/kg dry 9/21/229/21/220.006 EPA 8260D /5030AND1,1,1-Trichloroethane mg/kg dry 9/21/229/21/220.006 EPA 8260D /5030AND1,1,2,2-Tetrachloroethane mg/kg dry 9/21/229/21/220.006 EPA 8260D /5030AND1,1,2-Trichloroethane mg/kg dry 9/21/229/21/220.006 EPA 8260D /5030AND1,1,2-Trichlorotrifluoroethane mg/kg dry 9/21/229/21/220.006 EPA 8260D /5030AND1,1-Dichloroethane mg/kg dry 9/21/229/21/220.006 EPA 8260D /5030AND1,1-Dichloroethene mg/kg dry 9/21/229/21/220.006 EPA 8260D /5030AND1,1-Dichloropropene mg/kg dry 9/21/229/21/220.006 EPA 8260D /5030AND1,2,3-Trichlorobenzene mg/kg dry 9/21/229/21/220.006 EPA 8260D /5030AND1,2,3-Trichloropropane mg/kg dry 9/21/229/21/220.006 EPA 8260D /5030AND1,2,4-Trichlorobenzene mg/kg dry 9/21/229/21/220.006 EPA 8260D /5030AND1,2,4-Trimethylbenzene mg/kg dry 9/21/229/21/220.006 EPA 8260D /5030AND1,2-Dibromo-3-chloropropane mg/kg dry 9/21/229/21/220.006 EPA 8260D /5030AND1,2-Dibromoethane (EDB) mg/kg dry 9/21/229/21/220.006 EPA 8260D /5030AND1,2-Dichlorobenzene mg/kg dry 9/21/229/21/220.006 EPA 8260D /5030AND1,2-Dichloroethane mg/kg dry 9/21/229/21/220.006 EPA 8260D /5030AND1,2-Dichloropropane mg/kg dry 9/21/229/21/220.006 EPA 8260D /5030AND1,3,5-Trimethylbenzene mg/kg dry 9/21/229/21/220.006 EPA 8260D /5030AND1,3-Dichlorobenzene mg/kg dry 9/21/229/21/220.006 EPA 8260D /5030AND1,3-Dichloropropane mg/kg dry 9/21/229/21/220.006 EPA 8260D /5030AND1,4-Dichlorobenzene mg/kg dry 9/21/229/21/220.006 EPA 8260D /5030AND2,2-Dichloropropane mg/kg dry 9/21/229/21/220.006 EPA 8260D /5030AND2-Chlorotoluene mg/kg dry 9/21/229/21/220.06 EPA 8260D /5030AND2-Nitropropane mg/kg dry 9/21/229/21/220.006 EPA 8260D /5030AND4-Chlorotoluene mg/kg dry 9/21/229/21/220.006 EPA 8260D /5030ANDp-Isopropyltoluene mg/kg dry 9/21/229/21/220.06 EPA 8260D /5030ANDAcetone mg/kg dry 9/21/229/21/220.002 EPA 8260D /5030ANDBenzene mg/kg dry 9/21/229/21/220.006 EPA 8260D /5030ANDBromobenzene mg/kg dry 9/21/229/21/220.006 EPA 8260D /5030ANDBromochloromethane mg/kg dry 9/21/229/21/220.006 EPA 8260D /5030ANDBromodichloromethane mg/kg dry 9/21/229/21/220.006 EPA 8260D /5030ANDBromoform mg/kg dry 9/21/229/21/220.006 EPA 8260D /5030ANDBromomethane Project Name: 19219-3965 S. Washington Blvd, Ogden, UT CtF WO#: 22I1431 www.ChemtechFord.com Page 2 of 43Page 2 of 43 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 Engineering Michael Sauerwein 2800 South Redwood Road West Valley City, UT 84119-2375 PO#: Receipt: Date Reported: Project Name: 9/16/22 10:25 @ 6.1 °C 9/22/2022 19219-3965 S. Washington Blvd, Ogden, UT Sample ID: B1-12' (cont.) Lab ID: 22I1431-01Matrix: Solid Flag(s)Units Analysis Date/Time Date Sampled: 9/15/22 9:55 Preparation Date/Time Sampled By: Michael Sauerwein Minimum Reporting Limit MethodResult Volatile Organic Compounds (cont.) mg/kg dry 9/21/229/21/220.006 EPA 8260D /5030ANDCarbon Disulfide mg/kg dry 9/21/229/21/220.006 EPA 8260D /5030ANDCarbon Tetrachloride mg/kg dry 9/21/229/21/220.006 EPA 8260D /5030ANDChlorobenzene mg/kg dry 9/21/229/21/220.006 EPA 8260D /5030ANDChloroethane mg/kg dry 9/21/229/21/220.006 EPA 8260D /5030ANDChloroform mg/kg dry 9/21/229/21/220.006 EPA 8260D /5030ANDChloromethane mg/kg dry 9/21/229/21/220.006 EPA 8260D /5030ANDcis-1,2-Dichloroethene mg/kg dry 9/21/229/21/220.006 EPA 8260D /5030ANDcis-1,3-Dichloropropene mg/kg dry 9/21/229/21/220.12 EPA 8260D /5030ANDCyclohexanone mg/kg dry 9/21/229/21/220.006 EPA 8260D /5030ANDDibromochloromethane mg/kg dry 9/21/229/21/220.006 EPA 8260D /5030ANDDibromomethane mg/kg dry 9/21/229/21/220.006 EPA 8260D /5030ANDDichlorodifluoromethane mg/kg dry 9/21/229/21/220.06 EPA 8260D /5030ANDEthyl Acetate mg/kg dry 9/21/229/21/220.006 EPA 8260D /5030ANDEthyl Ether mg/kg dry 9/21/229/21/220.006 EPA 8260D /5030ANDEthylbenzene mg/kg dry 9/21/229/21/220.006 EPA 8260D /5030ANDHexachlorobutadiene mg/kg dry 9/21/229/21/220.12 EPA 8260D /5030ANDIsobutanol mg/kg dry 9/21/229/21/220.006 EPA 8260D /5030ANDIsopropylbenzene mg/kg dry 9/21/229/21/220.06 EPA 8260D /5030ANDMethyl Ethyl Ketone mg/kg dry 9/21/229/21/220.06 EPA 8260D /5030ANDMethyl Isobutyl Ketone mg/kg dry 9/21/229/21/220.12 EPA 8260D /5030ANDMethylene Chloride mg/kg dry 9/21/229/21/220.006 EPA 8260D /5030A0.15Methyl-tert-butyl ether (MTBE) mg/kg dry 9/21/229/21/220.006 EPA 8260D /5030ANDNaphthalene mg/kg dry 9/21/229/21/220.12 EPA 8260D /5030ANDn-Butyl Alcohol mg/kg dry 9/21/229/21/220.006 EPA 8260D /5030ANDn-Butylbenzene mg/kg dry 9/21/229/21/220.12 EPA 8260D /5030ANDNitrobenzene mg/kg dry 9/21/229/21/220.006 EPA 8260D /5030ANDn-Propyl Benzene mg/kg dry 9/21/229/21/220.006 EPA 8260D /5030ANDsec-Butyl Benzene mg/kg dry 9/21/229/21/220.006 EPA 8260D /5030ANDStyrene mg/kg dry 9/21/229/21/220.006 EPA 8260D /5030ANDtert-Butylbenzene mg/kg dry 9/21/229/21/220.006 EPA 8260D /5030ANDTetrachloroethene mg/kg dry 9/21/229/21/220.006 EPA 8260D /5030ANDToluene mg/kg dry 9/21/229/21/220.006 EPA 8260D /5030ANDtrans-1,2-Dichloroethene mg/kg dry 9/21/229/21/220.006 EPA 8260D /5030ANDtrans-1,3-Dichloropropene mg/kg dry 9/21/229/21/220.006 EPA 8260D /5030ANDTrichloroethene mg/kg dry 9/21/229/21/220.006 EPA 8260D /5030ANDTrichlorofluoromethane mg/kg dry 9/21/229/21/220.006 EPA 8260D /5030ANDVinyl Chloride Project Name: 19219-3965 S. Washington Blvd, Ogden, UT CtF WO#: 22I1431 www.ChemtechFord.com Page 3 of 43Page 3 of 43 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 Engineering Michael Sauerwein 2800 South Redwood Road West Valley City, UT 84119-2375 PO#: Receipt: Date Reported: Project Name: 9/16/22 10:25 @ 6.1 °C 9/22/2022 19219-3965 S. Washington Blvd, Ogden, UT Sample ID: B1-12' (cont.) Lab ID: 22I1431-01Matrix: Solid Flag(s)Units Analysis Date/Time Date Sampled: 9/15/22 9:55 Preparation Date/Time Sampled By: Michael Sauerwein Minimum Reporting Limit MethodResult Volatile Organic Compounds (cont.) mg/kg dry 9/21/229/21/220.006 EPA 8260D /5030ANDXylenes, total mg/kg dry 9/21/229/21/220.06 EPA 8260D /5030A0.10C5-C6 Aliphatic hydrocarbons mg/kg dry 9/21/229/21/220.06 EPA 8260D /5030ANDC7-C8 Aliphatic hydrocarbons mg/kg dry 9/21/229/21/220.06 EPA 8260D /5030ANDC9-C10 Aliphatic hydrocarbons mg/kg dry 9/21/229/21/220.06 EPA 8260D /5030ANDC9-C10 Alkyl Benzenes mg/kg dry 9/21/229/21/220.06 EPA 8260D /5030A0.11Gasoline Range Organics Project Name: 19219-3965 S. Washington Blvd, Ogden, UT CtF WO#: 22I1431 www.ChemtechFord.com Page 4 of 43Page 4 of 43 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 Engineering Michael Sauerwein 2800 South Redwood Road West Valley City, UT 84119-2375 PO#: Receipt: Date Reported: Project Name: 9/16/22 10:25 @ 6.1 °C 9/22/2022 19219-3965 S. Washington Blvd, Ogden, UT Sample ID: B2-11' Lab ID: 22I1431-02Matrix: Solid Flag(s)Units Analysis Date/Time Date Sampled: 9/15/22 10:47 Preparation Date/Time Sampled By: Michael Sauerwein Minimum Reporting Limit MethodResult Inorganic %9/19/229/16/220.1 EPA 8000C78.1Total Solids Diesel Range mg/kg dry 9/20/229/19/2264EPA 8015C/3550BNDDiesel Range Organics Volatile Organic Compounds mg/kg dry 9/21/229/21/220.006 EPA 8260D /5030AND1,1,1,2-Tetrachloroethane mg/kg dry 9/21/229/21/220.006 EPA 8260D /5030AND1,1,1-Trichloroethane mg/kg dry 9/21/229/21/220.006 EPA 8260D /5030AND1,1,2,2-Tetrachloroethane mg/kg dry 9/21/229/21/220.006 EPA 8260D /5030AND1,1,2-Trichloroethane mg/kg dry 9/21/229/21/220.006 EPA 8260D /5030AND1,1,2-Trichlorotrifluoroethane mg/kg dry 9/21/229/21/220.006 EPA 8260D /5030AND1,1-Dichloroethane mg/kg dry 9/21/229/21/220.006 EPA 8260D /5030AND1,1-Dichloroethene mg/kg dry 9/21/229/21/220.006 EPA 8260D /5030AND1,1-Dichloropropene mg/kg dry 9/21/229/21/220.006 EPA 8260D /5030AND1,2,3-Trichlorobenzene mg/kg dry 9/21/229/21/220.006 EPA 8260D /5030AND1,2,3-Trichloropropane mg/kg dry 9/21/229/21/220.006 EPA 8260D /5030AND1,2,4-Trichlorobenzene mg/kg dry 9/21/229/21/220.006 EPA 8260D /5030AND1,2,4-Trimethylbenzene mg/kg dry 9/21/229/21/220.006 EPA 8260D /5030AND1,2-Dibromo-3-chloropropane mg/kg dry 9/21/229/21/220.006 EPA 8260D /5030AND1,2-Dibromoethane (EDB) mg/kg dry 9/21/229/21/220.006 EPA 8260D /5030AND1,2-Dichlorobenzene mg/kg dry 9/21/229/21/220.006 EPA 8260D /5030AND1,2-Dichloroethane mg/kg dry 9/21/229/21/220.006 EPA 8260D /5030AND1,2-Dichloropropane mg/kg dry 9/21/229/21/220.006 EPA 8260D /5030AND1,3,5-Trimethylbenzene mg/kg dry 9/21/229/21/220.006 EPA 8260D /5030AND1,3-Dichlorobenzene mg/kg dry 9/21/229/21/220.006 EPA 8260D /5030AND1,3-Dichloropropane mg/kg dry 9/21/229/21/220.006 EPA 8260D /5030AND1,4-Dichlorobenzene mg/kg dry 9/21/229/21/220.006 EPA 8260D /5030AND2,2-Dichloropropane mg/kg dry 9/21/229/21/220.006 EPA 8260D /5030AND2-Chlorotoluene mg/kg dry 9/21/229/21/220.06 EPA 8260D /5030AND2-Nitropropane mg/kg dry 9/21/229/21/220.006 EPA 8260D /5030AND4-Chlorotoluene mg/kg dry 9/21/229/21/220.006 EPA 8260D /5030ANDp-Isopropyltoluene mg/kg dry 9/21/229/21/220.06 EPA 8260D /5030A0.09Acetone mg/kg dry 9/21/229/21/220.002 EPA 8260D /5030ANDBenzene mg/kg dry 9/21/229/21/220.006 EPA 8260D /5030ANDBromobenzene mg/kg dry 9/21/229/21/220.006 EPA 8260D /5030ANDBromochloromethane mg/kg dry 9/21/229/21/220.006 EPA 8260D /5030ANDBromodichloromethane mg/kg dry 9/21/229/21/220.006 EPA 8260D /5030ANDBromoform mg/kg dry 9/21/229/21/220.006 EPA 8260D /5030ANDBromomethane Project Name: 19219-3965 S. Washington Blvd, Ogden, UT CtF WO#: 22I1431 www.ChemtechFord.com Page 5 of 43Page 5 of 43 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 Engineering Michael Sauerwein 2800 South Redwood Road West Valley City, UT 84119-2375 PO#: Receipt: Date Reported: Project Name: 9/16/22 10:25 @ 6.1 °C 9/22/2022 19219-3965 S. Washington Blvd, Ogden, UT Sample ID: B2-11' (cont.) Lab ID: 22I1431-02Matrix: Solid Flag(s)Units Analysis Date/Time Date Sampled: 9/15/22 10:47 Preparation Date/Time Sampled By: Michael Sauerwein Minimum Reporting Limit MethodResult Volatile Organic Compounds (cont.) mg/kg dry 9/21/229/21/220.006 EPA 8260D /5030ANDCarbon Disulfide mg/kg dry 9/21/229/21/220.006 EPA 8260D /5030ANDCarbon Tetrachloride mg/kg dry 9/21/229/21/220.006 EPA 8260D /5030ANDChlorobenzene mg/kg dry 9/21/229/21/220.006 EPA 8260D /5030ANDChloroethane mg/kg dry 9/21/229/21/220.006 EPA 8260D /5030ANDChloroform mg/kg dry 9/21/229/21/220.006 EPA 8260D /5030ANDChloromethane mg/kg dry 9/21/229/21/220.006 EPA 8260D /5030ANDcis-1,2-Dichloroethene mg/kg dry 9/21/229/21/220.006 EPA 8260D /5030ANDcis-1,3-Dichloropropene mg/kg dry 9/21/229/21/220.12 EPA 8260D /5030ANDCyclohexanone mg/kg dry 9/21/229/21/220.006 EPA 8260D /5030ANDDibromochloromethane mg/kg dry 9/21/229/21/220.006 EPA 8260D /5030ANDDibromomethane mg/kg dry 9/21/229/21/220.006 EPA 8260D /5030ANDDichlorodifluoromethane mg/kg dry 9/21/229/21/220.06 EPA 8260D /5030ANDEthyl Acetate mg/kg dry 9/21/229/21/220.006 EPA 8260D /5030ANDEthyl Ether mg/kg dry 9/21/229/21/220.006 EPA 8260D /5030ANDEthylbenzene mg/kg dry 9/21/229/21/220.006 EPA 8260D /5030ANDHexachlorobutadiene mg/kg dry 9/21/229/21/220.12 EPA 8260D /5030ANDIsobutanol mg/kg dry 9/21/229/21/220.006 EPA 8260D /5030ANDIsopropylbenzene mg/kg dry 9/21/229/21/220.06 EPA 8260D /5030ANDMethyl Ethyl Ketone mg/kg dry 9/21/229/21/220.06 EPA 8260D /5030ANDMethyl Isobutyl Ketone mg/kg dry J9/21/229/21/220.12 EPA 8260D /5030A0.01Methylene Chloride mg/kg dry 9/21/229/21/220.006 EPA 8260D /5030A0.25Methyl-tert-butyl ether (MTBE) mg/kg dry 9/21/229/21/220.006 EPA 8260D /5030ANDNaphthalene mg/kg dry 9/21/229/21/220.12 EPA 8260D /5030ANDn-Butyl Alcohol mg/kg dry 9/21/229/21/220.006 EPA 8260D /5030ANDn-Butylbenzene mg/kg dry 9/21/229/21/220.12 EPA 8260D /5030ANDNitrobenzene mg/kg dry 9/21/229/21/220.006 EPA 8260D /5030ANDn-Propyl Benzene mg/kg dry 9/21/229/21/220.006 EPA 8260D /5030ANDsec-Butyl Benzene mg/kg dry 9/21/229/21/220.006 EPA 8260D /5030ANDStyrene mg/kg dry 9/21/229/21/220.006 EPA 8260D /5030ANDtert-Butylbenzene mg/kg dry 9/21/229/21/220.006 EPA 8260D /5030ANDTetrachloroethene mg/kg dry 9/21/229/21/220.006 EPA 8260D /5030ANDToluene mg/kg dry 9/21/229/21/220.006 EPA 8260D /5030ANDtrans-1,2-Dichloroethene mg/kg dry 9/21/229/21/220.006 EPA 8260D /5030ANDtrans-1,3-Dichloropropene mg/kg dry 9/21/229/21/220.006 EPA 8260D /5030ANDTrichloroethene mg/kg dry 9/21/229/21/220.006 EPA 8260D /5030ANDTrichlorofluoromethane mg/kg dry 9/21/229/21/220.006 EPA 8260D /5030ANDVinyl Chloride Project Name: 19219-3965 S. Washington Blvd, Ogden, UT CtF WO#: 22I1431 www.ChemtechFord.com Page 6 of 43Page 6 of 43 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 Engineering Michael Sauerwein 2800 South Redwood Road West Valley City, UT 84119-2375 PO#: Receipt: Date Reported: Project Name: 9/16/22 10:25 @ 6.1 °C 9/22/2022 19219-3965 S. Washington Blvd, Ogden, UT Sample ID: B2-11' (cont.) Lab ID: 22I1431-02Matrix: Solid Flag(s)Units Analysis Date/Time Date Sampled: 9/15/22 10:47 Preparation Date/Time Sampled By: Michael Sauerwein Minimum Reporting Limit MethodResult Volatile Organic Compounds (cont.) mg/kg dry 9/21/229/21/220.006 EPA 8260D /5030ANDXylenes, total mg/kg dry 9/21/229/21/220.06 EPA 8260D /5030A0.16C5-C6 Aliphatic hydrocarbons mg/kg dry 9/21/229/21/220.06 EPA 8260D /5030ANDC7-C8 Aliphatic hydrocarbons mg/kg dry 9/21/229/21/220.06 EPA 8260D /5030ANDC9-C10 Aliphatic hydrocarbons mg/kg dry 9/21/229/21/220.06 EPA 8260D /5030ANDC9-C10 Alkyl Benzenes mg/kg dry 9/21/229/21/220.06 EPA 8260D /5030A0.20Gasoline Range Organics Project Name: 19219-3965 S. Washington Blvd, Ogden, UT CtF WO#: 22I1431 www.ChemtechFord.com Page 7 of 43Page 7 of 43 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 Engineering Michael Sauerwein 2800 South Redwood Road West Valley City, UT 84119-2375 PO#: Receipt: Date Reported: Project Name: 9/16/22 10:25 @ 6.1 °C 9/22/2022 19219-3965 S. Washington Blvd, Ogden, UT Sample ID: B3-11' Lab ID: 22I1431-03Matrix: Solid Flag(s)Units Analysis Date/Time Date Sampled: 9/15/22 11:36 Preparation Date/Time Sampled By: Michael Sauerwein Minimum Reporting Limit MethodResult Inorganic %9/19/229/16/220.1 EPA 8000C89.1Total Solids Diesel Range mg/kg dry 9/21/229/20/2256EPA 8015C/3550B516Diesel Range Organics Volatile Organic Compounds mg/kg dry 9/21/229/21/220.006 EPA 8260D /5030AND1,1,1,2-Tetrachloroethane mg/kg dry 9/21/229/21/220.006 EPA 8260D /5030AND1,1,1-Trichloroethane mg/kg dry 9/21/229/21/220.006 EPA 8260D /5030AND1,1,2,2-Tetrachloroethane mg/kg dry 9/21/229/21/220.006 EPA 8260D /5030AND1,1,2-Trichloroethane mg/kg dry 9/21/229/21/220.006 EPA 8260D /5030AND1,1,2-Trichlorotrifluoroethane mg/kg dry 9/21/229/21/220.006 EPA 8260D /5030AND1,1-Dichloroethane mg/kg dry 9/21/229/21/220.006 EPA 8260D /5030AND1,1-Dichloroethene mg/kg dry 9/21/229/21/220.006 EPA 8260D /5030AND1,1-Dichloropropene mg/kg dry 9/21/229/21/220.006 EPA 8260D /5030AND1,2,3-Trichlorobenzene mg/kg dry 9/21/229/21/220.006 EPA 8260D /5030AND1,2,3-Trichloropropane mg/kg dry 9/21/229/21/220.006 EPA 8260D /5030AND1,2,4-Trichlorobenzene mg/kg dry 9/21/229/21/220.006 EPA 8260D /5030A0.021,2,4-Trimethylbenzene mg/kg dry 9/21/229/21/220.006 EPA 8260D /5030AND1,2-Dibromo-3-chloropropane mg/kg dry 9/21/229/21/220.006 EPA 8260D /5030AND1,2-Dibromoethane (EDB) mg/kg dry 9/21/229/21/220.006 EPA 8260D /5030AND1,2-Dichlorobenzene mg/kg dry 9/21/229/21/220.006 EPA 8260D /5030AND1,2-Dichloroethane mg/kg dry 9/21/229/21/220.006 EPA 8260D /5030AND1,2-Dichloropropane mg/kg dry 9/21/229/21/220.006 EPA 8260D /5030A0.0091,3,5-Trimethylbenzene mg/kg dry 9/21/229/21/220.006 EPA 8260D /5030AND1,3-Dichlorobenzene mg/kg dry 9/21/229/21/220.006 EPA 8260D /5030AND1,3-Dichloropropane mg/kg dry 9/21/229/21/220.006 EPA 8260D /5030AND1,4-Dichlorobenzene mg/kg dry 9/21/229/21/220.006 EPA 8260D /5030AND2,2-Dichloropropane mg/kg dry 9/21/229/21/220.006 EPA 8260D /5030AND2-Chlorotoluene mg/kg dry 9/21/229/21/220.06 EPA 8260D /5030AND2-Nitropropane mg/kg dry 9/21/229/21/220.006 EPA 8260D /5030AND4-Chlorotoluene mg/kg dry 9/21/229/21/220.006 EPA 8260D /5030ANDp-Isopropyltoluene mg/kg dry 9/21/229/21/220.06 EPA 8260D /5030ANDAcetone mg/kg dry 9/21/229/21/220.002 EPA 8260D /5030ANDBenzene mg/kg dry 9/21/229/21/220.006 EPA 8260D /5030ANDBromobenzene mg/kg dry 9/21/229/21/220.006 EPA 8260D /5030ANDBromochloromethane mg/kg dry 9/21/229/21/220.006 EPA 8260D /5030ANDBromodichloromethane mg/kg dry 9/21/229/21/220.006 EPA 8260D /5030ANDBromoform mg/kg dry 9/21/229/21/220.006 EPA 8260D /5030ANDBromomethane Project Name: 19219-3965 S. Washington Blvd, Ogden, UT CtF WO#: 22I1431 www.ChemtechFord.com Page 8 of 43Page 8 of 43 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 Engineering Michael Sauerwein 2800 South Redwood Road West Valley City, UT 84119-2375 PO#: Receipt: Date Reported: Project Name: 9/16/22 10:25 @ 6.1 °C 9/22/2022 19219-3965 S. Washington Blvd, Ogden, UT Sample ID: B3-11' (cont.) Lab ID: 22I1431-03Matrix: Solid Flag(s)Units Analysis Date/Time Date Sampled: 9/15/22 11:36 Preparation Date/Time Sampled By: Michael Sauerwein Minimum Reporting Limit MethodResult Volatile Organic Compounds (cont.) mg/kg dry 9/21/229/21/220.006 EPA 8260D /5030ANDCarbon Disulfide mg/kg dry 9/21/229/21/220.006 EPA 8260D /5030ANDCarbon Tetrachloride mg/kg dry 9/21/229/21/220.006 EPA 8260D /5030ANDChlorobenzene mg/kg dry 9/21/229/21/220.006 EPA 8260D /5030ANDChloroethane mg/kg dry 9/21/229/21/220.006 EPA 8260D /5030ANDChloroform mg/kg dry 9/21/229/21/220.006 EPA 8260D /5030ANDChloromethane mg/kg dry 9/21/229/21/220.006 EPA 8260D /5030ANDcis-1,2-Dichloroethene mg/kg dry 9/21/229/21/220.006 EPA 8260D /5030ANDcis-1,3-Dichloropropene mg/kg dry 9/21/229/21/220.11 EPA 8260D /5030ANDCyclohexanone mg/kg dry 9/21/229/21/220.006 EPA 8260D /5030ANDDibromochloromethane mg/kg dry 9/21/229/21/220.006 EPA 8260D /5030ANDDibromomethane mg/kg dry 9/21/229/21/220.006 EPA 8260D /5030ANDDichlorodifluoromethane mg/kg dry 9/21/229/21/220.06 EPA 8260D /5030ANDEthyl Acetate mg/kg dry 9/21/229/21/220.006 EPA 8260D /5030ANDEthyl Ether mg/kg dry 9/21/229/21/220.006 EPA 8260D /5030ANDEthylbenzene mg/kg dry 9/21/229/21/220.006 EPA 8260D /5030ANDHexachlorobutadiene mg/kg dry 9/21/229/21/220.11 EPA 8260D /5030ANDIsobutanol mg/kg dry 9/21/229/21/220.006 EPA 8260D /5030ANDIsopropylbenzene mg/kg dry 9/21/229/21/220.06 EPA 8260D /5030ANDMethyl Ethyl Ketone mg/kg dry 9/21/229/21/220.06 EPA 8260D /5030ANDMethyl Isobutyl Ketone mg/kg dry 9/21/229/21/220.11 EPA 8260D /5030ANDMethylene Chloride mg/kg dry 9/21/229/21/220.006 EPA 8260D /5030A0.09Methyl-tert-butyl ether (MTBE) mg/kg dry 9/21/229/21/220.006 EPA 8260D /5030ANDNaphthalene mg/kg dry 9/21/229/21/220.11 EPA 8260D /5030ANDn-Butyl Alcohol mg/kg dry 9/21/229/21/220.006 EPA 8260D /5030ANDn-Butylbenzene mg/kg dry 9/21/229/21/220.11 EPA 8260D /5030ANDNitrobenzene mg/kg dry 9/21/229/21/220.006 EPA 8260D /5030ANDn-Propyl Benzene mg/kg dry 9/21/229/21/220.006 EPA 8260D /5030ANDsec-Butyl Benzene mg/kg dry 9/21/229/21/220.006 EPA 8260D /5030ANDStyrene mg/kg dry 9/21/229/21/220.006 EPA 8260D /5030ANDtert-Butylbenzene mg/kg dry 9/21/229/21/220.006 EPA 8260D /5030ANDTetrachloroethene mg/kg dry 9/21/229/21/220.006 EPA 8260D /5030ANDToluene mg/kg dry 9/21/229/21/220.006 EPA 8260D /5030ANDtrans-1,2-Dichloroethene mg/kg dry 9/21/229/21/220.006 EPA 8260D /5030ANDtrans-1,3-Dichloropropene mg/kg dry 9/21/229/21/220.006 EPA 8260D /5030ANDTrichloroethene mg/kg dry 9/21/229/21/220.006 EPA 8260D /5030ANDTrichlorofluoromethane mg/kg dry 9/21/229/21/220.006 EPA 8260D /5030ANDVinyl Chloride Project Name: 19219-3965 S. Washington Blvd, Ogden, UT CtF WO#: 22I1431 www.ChemtechFord.com Page 9 of 43Page 9 of 43 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 Engineering Michael Sauerwein 2800 South Redwood Road West Valley City, UT 84119-2375 PO#: Receipt: Date Reported: Project Name: 9/16/22 10:25 @ 6.1 °C 9/22/2022 19219-3965 S. Washington Blvd, Ogden, UT Sample ID: B3-11' (cont.) Lab ID: 22I1431-03Matrix: Solid Flag(s)Units Analysis Date/Time Date Sampled: 9/15/22 11:36 Preparation Date/Time Sampled By: Michael Sauerwein Minimum Reporting Limit MethodResult Volatile Organic Compounds (cont.) mg/kg dry 9/21/229/21/220.006 EPA 8260D /5030A0.05Xylenes, total mg/kg dry 9/21/229/21/220.06 EPA 8260D /5030A0.06C5-C6 Aliphatic hydrocarbons mg/kg dry 9/21/229/21/220.06 EPA 8260D /5030ANDC7-C8 Aliphatic hydrocarbons mg/kg dry 9/21/229/21/220.06 EPA 8260D /5030ANDC9-C10 Aliphatic hydrocarbons mg/kg dry 9/21/229/21/220.06 EPA 8260D /5030A0.11C9-C10 Alkyl Benzenes mg/kg dry 9/21/229/21/220.06 EPA 8260D /5030A0.28Gasoline Range Organics Project Name: 19219-3965 S. Washington Blvd, Ogden, UT CtF WO#: 22I1431 www.ChemtechFord.com Page 10 of 43Page 10 of 43 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 Engineering Michael Sauerwein 2800 South Redwood Road West Valley City, UT 84119-2375 PO#: Receipt: Date Reported: Project Name: 9/16/22 10:25 @ 6.1 °C 9/22/2022 19219-3965 S. Washington Blvd, Ogden, UT Sample ID: B4-12' Lab ID: 22I1431-04Matrix: Solid Flag(s)Units Analysis Date/Time Date Sampled: 9/15/22 15:30 Preparation Date/Time Sampled By: Michael Sauerwein Minimum Reporting Limit MethodResult Inorganic %9/19/229/16/220.1 EPA 8000C80.0Total Solids Diesel Range mg/kg dry 9/21/229/20/2262EPA 8015C/3550BNDDiesel Range Organics Volatile Organic Compounds mg/kg dry 9/22/229/22/220.006 EPA 8260D /5030AND1,1,1,2-Tetrachloroethane mg/kg dry 9/22/229/22/220.006 EPA 8260D /5030AND1,1,1-Trichloroethane mg/kg dry 9/22/229/22/220.006 EPA 8260D /5030AND1,1,2,2-Tetrachloroethane mg/kg dry 9/22/229/22/220.006 EPA 8260D /5030AND1,1,2-Trichloroethane mg/kg dry 9/22/229/22/220.006 EPA 8260D /5030AND1,1,2-Trichlorotrifluoroethane mg/kg dry 9/22/229/22/220.006 EPA 8260D /5030AND1,1-Dichloroethane mg/kg dry 9/22/229/22/220.006 EPA 8260D /5030AND1,1-Dichloroethene mg/kg dry 9/22/229/22/220.006 EPA 8260D /5030AND1,1-Dichloropropene mg/kg dry 9/22/229/22/220.006 EPA 8260D /5030AND1,2,3-Trichlorobenzene mg/kg dry 9/22/229/22/220.006 EPA 8260D /5030AND1,2,3-Trichloropropane mg/kg dry 9/22/229/22/220.006 EPA 8260D /5030AND1,2,4-Trichlorobenzene mg/kg dry 9/22/229/22/220.006 EPA 8260D /5030AND1,2,4-Trimethylbenzene mg/kg dry 9/22/229/22/220.006 EPA 8260D /5030AND1,2-Dibromo-3-chloropropane mg/kg dry 9/22/229/22/220.006 EPA 8260D /5030AND1,2-Dibromoethane (EDB) mg/kg dry 9/22/229/22/220.006 EPA 8260D /5030AND1,2-Dichlorobenzene mg/kg dry 9/22/229/22/220.006 EPA 8260D /5030AND1,2-Dichloroethane mg/kg dry 9/22/229/22/220.006 EPA 8260D /5030AND1,2-Dichloropropane mg/kg dry 9/22/229/22/220.006 EPA 8260D /5030AND1,3,5-Trimethylbenzene mg/kg dry 9/22/229/22/220.006 EPA 8260D /5030AND1,3-Dichlorobenzene mg/kg dry 9/22/229/22/220.006 EPA 8260D /5030AND1,3-Dichloropropane mg/kg dry 9/22/229/22/220.006 EPA 8260D /5030AND1,4-Dichlorobenzene mg/kg dry 9/22/229/22/220.006 EPA 8260D /5030AND2,2-Dichloropropane mg/kg dry 9/22/229/22/220.006 EPA 8260D /5030AND2-Chlorotoluene mg/kg dry J-LOW9/22/229/22/220.06 EPA 8260D /5030AND2-Nitropropane mg/kg dry 9/22/229/22/220.006 EPA 8260D /5030AND4-Chlorotoluene mg/kg dry 9/22/229/22/220.006 EPA 8260D /5030ANDp-Isopropyltoluene mg/kg dry 9/22/229/22/220.06 EPA 8260D /5030A4.94Acetone mg/kg dry 9/22/229/22/220.002 EPA 8260D /5030ANDBenzene mg/kg dry 9/22/229/22/220.006 EPA 8260D /5030ANDBromobenzene mg/kg dry 9/22/229/22/220.006 EPA 8260D /5030ANDBromochloromethane mg/kg dry 9/22/229/22/220.006 EPA 8260D /5030ANDBromodichloromethane mg/kg dry 9/22/229/22/220.006 EPA 8260D /5030ANDBromoform mg/kg dry 9/22/229/22/220.006 EPA 8260D /5030ANDBromomethane Project Name: 19219-3965 S. Washington Blvd, Ogden, UT CtF WO#: 22I1431 www.ChemtechFord.com Page 11 of 43Page 11 of 43 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 Engineering Michael Sauerwein 2800 South Redwood Road West Valley City, UT 84119-2375 PO#: Receipt: Date Reported: Project Name: 9/16/22 10:25 @ 6.1 °C 9/22/2022 19219-3965 S. Washington Blvd, Ogden, UT Sample ID: B4-12' (cont.) Lab ID: 22I1431-04Matrix: Solid Flag(s)Units Analysis Date/Time Date Sampled: 9/15/22 15:30 Preparation Date/Time Sampled By: Michael Sauerwein Minimum Reporting Limit MethodResult Volatile Organic Compounds (cont.) mg/kg dry 9/22/229/22/220.006 EPA 8260D /5030ANDCarbon Disulfide mg/kg dry 9/22/229/22/220.006 EPA 8260D /5030ANDCarbon Tetrachloride mg/kg dry 9/22/229/22/220.006 EPA 8260D /5030ANDChlorobenzene mg/kg dry 9/22/229/22/220.006 EPA 8260D /5030ANDChloroethane mg/kg dry 9/22/229/22/220.006 EPA 8260D /5030ANDChloroform mg/kg dry 9/22/229/22/220.006 EPA 8260D /5030ANDChloromethane mg/kg dry 9/22/229/22/220.006 EPA 8260D /5030ANDcis-1,2-Dichloroethene mg/kg dry 9/22/229/22/220.006 EPA 8260D /5030ANDcis-1,3-Dichloropropene mg/kg dry 9/22/229/22/220.12 EPA 8260D /5030ANDCyclohexanone mg/kg dry 9/22/229/22/220.006 EPA 8260D /5030ANDDibromochloromethane mg/kg dry 9/22/229/22/220.006 EPA 8260D /5030ANDDibromomethane mg/kg dry 9/22/229/22/220.006 EPA 8260D /5030ANDDichlorodifluoromethane mg/kg dry 9/22/229/22/220.06 EPA 8260D /5030ANDEthyl Acetate mg/kg dry 9/22/229/22/220.006 EPA 8260D /5030ANDEthyl Ether mg/kg dry 9/22/229/22/220.006 EPA 8260D /5030ANDEthylbenzene mg/kg dry 9/22/229/22/220.006 EPA 8260D /5030ANDHexachlorobutadiene mg/kg dry 9/22/229/22/220.12 EPA 8260D /5030ANDIsobutanol mg/kg dry 9/22/229/22/220.006 EPA 8260D /5030ANDIsopropylbenzene mg/kg dry 9/22/229/22/220.06 EPA 8260D /5030ANDMethyl Ethyl Ketone mg/kg dry 9/22/229/22/220.06 EPA 8260D /5030ANDMethyl Isobutyl Ketone mg/kg dry 9/22/229/22/220.12 EPA 8260D /5030ANDMethylene Chloride mg/kg dry 9/22/229/22/220.006 EPA 8260D /5030A0.07Methyl-tert-butyl ether (MTBE) mg/kg dry J9/22/229/22/220.006 EPA 8260D /5030A0.003Naphthalene mg/kg dry 9/22/229/22/220.12 EPA 8260D /5030ANDn-Butyl Alcohol mg/kg dry 9/22/229/22/220.006 EPA 8260D /5030ANDn-Butylbenzene mg/kg dry 9/22/229/22/220.12 EPA 8260D /5030ANDNitrobenzene mg/kg dry 9/22/229/22/220.006 EPA 8260D /5030ANDn-Propyl Benzene mg/kg dry 9/22/229/22/220.006 EPA 8260D /5030ANDsec-Butyl Benzene mg/kg dry 9/22/229/22/220.006 EPA 8260D /5030ANDStyrene mg/kg dry 9/22/229/22/220.006 EPA 8260D /5030ANDtert-Butylbenzene mg/kg dry 9/22/229/22/220.006 EPA 8260D /5030ANDTetrachloroethene mg/kg dry 9/22/229/22/220.006 EPA 8260D /5030ANDToluene mg/kg dry 9/22/229/22/220.006 EPA 8260D /5030ANDtrans-1,2-Dichloroethene mg/kg dry 9/22/229/22/220.006 EPA 8260D /5030ANDtrans-1,3-Dichloropropene mg/kg dry 9/22/229/22/220.006 EPA 8260D /5030ANDTrichloroethene mg/kg dry 9/22/229/22/220.006 EPA 8260D /5030ANDTrichlorofluoromethane mg/kg dry 9/22/229/22/220.006 EPA 8260D /5030ANDVinyl Chloride Project Name: 19219-3965 S. Washington Blvd, Ogden, UT CtF WO#: 22I1431 www.ChemtechFord.com Page 12 of 43Page 12 of 43 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 Engineering Michael Sauerwein 2800 South Redwood Road West Valley City, UT 84119-2375 PO#: Receipt: Date Reported: Project Name: 9/16/22 10:25 @ 6.1 °C 9/22/2022 19219-3965 S. Washington Blvd, Ogden, UT Sample ID: B4-12' (cont.) Lab ID: 22I1431-04Matrix: Solid Flag(s)Units Analysis Date/Time Date Sampled: 9/15/22 15:30 Preparation Date/Time Sampled By: Michael Sauerwein Minimum Reporting Limit MethodResult Volatile Organic Compounds (cont.) mg/kg dry 9/22/229/22/220.006 EPA 8260D /5030ANDXylenes, total mg/kg dry 9/22/229/22/220.06 EPA 8260D /5030ANDC5-C6 Aliphatic hydrocarbons mg/kg dry 9/22/229/22/220.06 EPA 8260D /5030A0.06C7-C8 Aliphatic hydrocarbons mg/kg dry 9/22/229/22/220.06 EPA 8260D /5030A0.12C9-C10 Aliphatic hydrocarbons mg/kg dry 9/22/229/22/220.06 EPA 8260D /5030ANDC9-C10 Alkyl Benzenes mg/kg dry 9/22/229/22/220.06 EPA 8260D /5030A0.25Gasoline Range Organics Project Name: 19219-3965 S. Washington Blvd, Ogden, UT CtF WO#: 22I1431 www.ChemtechFord.com Page 13 of 43Page 13 of 43 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 Engineering Michael Sauerwein 2800 South Redwood Road West Valley City, UT 84119-2375 PO#: Receipt: Date Reported: Project Name: 9/16/22 10:25 @ 6.1 °C 9/22/2022 19219-3965 S. Washington Blvd, Ogden, UT Sample ID: B5-12' Lab ID: 22I1431-05Matrix: Solid Flag(s)Units Analysis Date/Time Date Sampled: 9/15/22 12:37 Preparation Date/Time Sampled By: Michael Sauerwein Minimum Reporting Limit MethodResult Inorganic %9/19/229/16/220.1 EPA 8000C87.4Total Solids Diesel Range mg/kg dry 9/21/229/20/2257EPA 8015C/3550B166Diesel Range Organics Volatile Organic Compounds mg/kg dry 9/21/229/21/220.006 EPA 8260D /5030AND1,1,1,2-Tetrachloroethane mg/kg dry 9/21/229/21/220.006 EPA 8260D /5030AND1,1,1-Trichloroethane mg/kg dry 9/21/229/21/220.006 EPA 8260D /5030AND1,1,2,2-Tetrachloroethane mg/kg dry 9/21/229/21/220.006 EPA 8260D /5030AND1,1,2-Trichloroethane mg/kg dry 9/21/229/21/220.006 EPA 8260D /5030AND1,1,2-Trichlorotrifluoroethane mg/kg dry 9/21/229/21/220.006 EPA 8260D /5030AND1,1-Dichloroethane mg/kg dry 9/21/229/21/220.006 EPA 8260D /5030AND1,1-Dichloroethene mg/kg dry 9/21/229/21/220.006 EPA 8260D /5030AND1,1-Dichloropropene mg/kg dry 9/21/229/21/220.006 EPA 8260D /5030AND1,2,3-Trichlorobenzene mg/kg dry 9/21/229/21/220.006 EPA 8260D /5030AND1,2,3-Trichloropropane mg/kg dry 9/21/229/21/220.006 EPA 8260D /5030AND1,2,4-Trichlorobenzene mg/kg dry 9/21/229/21/220.28 EPA 8260D /5030A2.701,2,4-Trimethylbenzene mg/kg dry 9/21/229/21/220.006 EPA 8260D /5030AND1,2-Dibromo-3-chloropropane mg/kg dry 9/21/229/21/220.006 EPA 8260D /5030AND1,2-Dibromoethane (EDB) mg/kg dry 9/21/229/21/220.006 EPA 8260D /5030AND1,2-Dichlorobenzene mg/kg dry 9/21/229/21/220.006 EPA 8260D /5030AND1,2-Dichloroethane mg/kg dry 9/21/229/21/220.006 EPA 8260D /5030AND1,2-Dichloropropane mg/kg dry 9/21/229/21/220.28 EPA 8260D /5030A0.991,3,5-Trimethylbenzene mg/kg dry 9/21/229/21/220.006 EPA 8260D /5030AND1,3-Dichlorobenzene mg/kg dry 9/21/229/21/220.006 EPA 8260D /5030AND1,3-Dichloropropane mg/kg dry 9/21/229/21/220.006 EPA 8260D /5030AND1,4-Dichlorobenzene mg/kg dry 9/21/229/21/220.006 EPA 8260D /5030AND2,2-Dichloropropane mg/kg dry 9/21/229/21/220.006 EPA 8260D /5030AND2-Chlorotoluene mg/kg dry 9/21/229/21/220.06 EPA 8260D /5030AND2-Nitropropane mg/kg dry 9/21/229/21/220.006 EPA 8260D /5030AND4-Chlorotoluene mg/kg dry 9/21/229/21/220.006 EPA 8260D /5030A0.07p-Isopropyltoluene mg/kg dry 9/21/229/21/220.06 EPA 8260D /5030A0.12Acetone mg/kg dry 9/21/229/21/220.002 EPA 8260D /5030ANDBenzene mg/kg dry 9/21/229/21/220.006 EPA 8260D /5030ANDBromobenzene mg/kg dry 9/21/229/21/220.006 EPA 8260D /5030ANDBromochloromethane mg/kg dry 9/21/229/21/220.006 EPA 8260D /5030ANDBromodichloromethane mg/kg dry 9/21/229/21/220.006 EPA 8260D /5030ANDBromoform mg/kg dry 9/21/229/21/220.006 EPA 8260D /5030ANDBromomethane Project Name: 19219-3965 S. Washington Blvd, Ogden, UT CtF WO#: 22I1431 www.ChemtechFord.com Page 14 of 43Page 14 of 43 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 Engineering Michael Sauerwein 2800 South Redwood Road West Valley City, UT 84119-2375 PO#: Receipt: Date Reported: Project Name: 9/16/22 10:25 @ 6.1 °C 9/22/2022 19219-3965 S. Washington Blvd, Ogden, UT Sample ID: B5-12' (cont.) Lab ID: 22I1431-05Matrix: Solid Flag(s)Units Analysis Date/Time Date Sampled: 9/15/22 12:37 Preparation Date/Time Sampled By: Michael Sauerwein Minimum Reporting Limit MethodResult Volatile Organic Compounds (cont.) mg/kg dry 9/21/229/21/220.006 EPA 8260D /5030ANDCarbon Disulfide mg/kg dry 9/21/229/21/220.006 EPA 8260D /5030ANDCarbon Tetrachloride mg/kg dry 9/21/229/21/220.006 EPA 8260D /5030ANDChlorobenzene mg/kg dry 9/21/229/21/220.006 EPA 8260D /5030ANDChloroethane mg/kg dry 9/21/229/21/220.006 EPA 8260D /5030ANDChloroform mg/kg dry 9/21/229/21/220.006 EPA 8260D /5030ANDChloromethane mg/kg dry 9/21/229/21/220.006 EPA 8260D /5030ANDcis-1,2-Dichloroethene mg/kg dry 9/21/229/21/220.006 EPA 8260D /5030ANDcis-1,3-Dichloropropene mg/kg dry 9/21/229/21/220.11 EPA 8260D /5030ANDCyclohexanone mg/kg dry 9/21/229/21/220.006 EPA 8260D /5030ANDDibromochloromethane mg/kg dry 9/21/229/21/220.006 EPA 8260D /5030ANDDibromomethane mg/kg dry 9/21/229/21/220.006 EPA 8260D /5030ANDDichlorodifluoromethane mg/kg dry 9/21/229/21/220.06 EPA 8260D /5030ANDEthyl Acetate mg/kg dry 9/21/229/21/220.006 EPA 8260D /5030ANDEthyl Ether mg/kg dry 9/21/229/21/220.006 EPA 8260D /5030A0.02Ethylbenzene mg/kg dry 9/21/229/21/220.006 EPA 8260D /5030ANDHexachlorobutadiene mg/kg dry 9/21/229/21/220.11 EPA 8260D /5030ANDIsobutanol mg/kg dry 9/21/229/21/220.006 EPA 8260D /5030A0.02Isopropylbenzene mg/kg dry 9/21/229/21/220.06 EPA 8260D /5030ANDMethyl Ethyl Ketone mg/kg dry 9/21/229/21/220.06 EPA 8260D /5030ANDMethyl Isobutyl Ketone mg/kg dry 9/21/229/21/220.11 EPA 8260D /5030ANDMethylene Chloride mg/kg dry 9/21/229/21/220.006 EPA 8260D /5030A0.12Methyl-tert-butyl ether (MTBE) mg/kg dry 9/21/229/21/220.28 EPA 8260D /5030A0.68Naphthalene mg/kg dry 9/21/229/21/220.11 EPA 8260D /5030ANDn-Butyl Alcohol mg/kg dry 9/21/229/21/220.006 EPA 8260D /5030ANDn-Butylbenzene mg/kg dry 9/21/229/21/220.11 EPA 8260D /5030ANDNitrobenzene mg/kg dry 9/21/229/21/220.006 EPA 8260D /5030A0.13n-Propyl Benzene mg/kg dry 9/21/229/21/220.006 EPA 8260D /5030A0.07sec-Butyl Benzene mg/kg dry 9/21/229/21/220.006 EPA 8260D /5030ANDStyrene mg/kg dry 9/21/229/21/220.006 EPA 8260D /5030ANDtert-Butylbenzene mg/kg dry 9/21/229/21/220.006 EPA 8260D /5030ANDTetrachloroethene mg/kg dry 9/21/229/21/220.006 EPA 8260D /5030ANDToluene mg/kg dry 9/21/229/21/220.006 EPA 8260D /5030ANDtrans-1,2-Dichloroethene mg/kg dry 9/21/229/21/220.006 EPA 8260D /5030ANDtrans-1,3-Dichloropropene mg/kg dry 9/21/229/21/220.006 EPA 8260D /5030ANDTrichloroethene mg/kg dry 9/21/229/21/220.006 EPA 8260D /5030ANDTrichlorofluoromethane mg/kg dry 9/21/229/21/220.006 EPA 8260D /5030ANDVinyl Chloride Project Name: 19219-3965 S. Washington Blvd, Ogden, UT CtF WO#: 22I1431 www.ChemtechFord.com Page 15 of 43Page 15 of 43 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 Engineering Michael Sauerwein 2800 South Redwood Road West Valley City, UT 84119-2375 PO#: Receipt: Date Reported: Project Name: 9/16/22 10:25 @ 6.1 °C 9/22/2022 19219-3965 S. Washington Blvd, Ogden, UT Sample ID: B5-12' (cont.) Lab ID: 22I1431-05Matrix: Solid Flag(s)Units Analysis Date/Time Date Sampled: 9/15/22 12:37 Preparation Date/Time Sampled By: Michael Sauerwein Minimum Reporting Limit MethodResult Volatile Organic Compounds (cont.) mg/kg dry 9/21/229/21/220.006 EPA 8260D /5030A0.36Xylenes, total mg/kg dry 9/21/229/21/220.06 EPA 8260D /5030A0.08C5-C6 Aliphatic hydrocarbons mg/kg dry 9/21/229/21/220.06 EPA 8260D /5030A0.16C7-C8 Aliphatic hydrocarbons mg/kg dry 9/21/229/21/220.06 EPA 8260D /5030A2.42C9-C10 Aliphatic hydrocarbons mg/kg dry 9/21/229/21/220.06 EPA 8260D /5030A20.7C9-C10 Alkyl Benzenes mg/kg dry 9/21/229/21/220.06 EPA 8260D /5030A24.6Gasoline Range Organics Project Name: 19219-3965 S. Washington Blvd, Ogden, UT CtF WO#: 22I1431 www.ChemtechFord.com Page 16 of 43Page 16 of 43 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 Engineering Michael Sauerwein 2800 South Redwood Road West Valley City, UT 84119-2375 PO#: Receipt: Date Reported: Project Name: 9/16/22 10:25 @ 6.1 °C 9/22/2022 19219-3965 S. Washington Blvd, Ogden, UT Sample ID: B6-18' Lab ID: 22I1431-06Matrix: Solid Flag(s)Units Analysis Date/Time Date Sampled: 9/15/22 13:50 Preparation Date/Time Sampled By: Michael Sauerwein Minimum Reporting Limit MethodResult Inorganic %9/19/229/16/220.1 EPA 8000C78.9Total Solids Diesel Range mg/kg dry 9/21/229/20/2263EPA 8015C/3550BNDDiesel Range Organics Volatile Organic Compounds mg/kg dry 9/22/229/22/220.006 EPA 8260D /5030AND1,1,1,2-Tetrachloroethane mg/kg dry 9/22/229/22/220.006 EPA 8260D /5030AND1,1,1-Trichloroethane mg/kg dry 9/22/229/22/220.006 EPA 8260D /5030AND1,1,2,2-Tetrachloroethane mg/kg dry 9/22/229/22/220.006 EPA 8260D /5030A0.0071,1,2-Trichloroethane mg/kg dry 9/22/229/22/220.006 EPA 8260D /5030AND1,1,2-Trichlorotrifluoroethane mg/kg dry 9/22/229/22/220.006 EPA 8260D /5030AND1,1-Dichloroethane mg/kg dry 9/22/229/22/220.006 EPA 8260D /5030AND1,1-Dichloroethene mg/kg dry 9/22/229/22/220.006 EPA 8260D /5030AND1,1-Dichloropropene mg/kg dry 9/22/229/22/220.006 EPA 8260D /5030AND1,2,3-Trichlorobenzene mg/kg dry 9/22/229/22/220.006 EPA 8260D /5030AND1,2,3-Trichloropropane mg/kg dry 9/22/229/22/220.006 EPA 8260D /5030AND1,2,4-Trichlorobenzene mg/kg dry 9/22/229/22/220.006 EPA 8260D /5030AND1,2,4-Trimethylbenzene mg/kg dry 9/22/229/22/220.006 EPA 8260D /5030AND1,2-Dibromo-3-chloropropane mg/kg dry 9/22/229/22/220.006 EPA 8260D /5030AND1,2-Dibromoethane (EDB) mg/kg dry 9/22/229/22/220.006 EPA 8260D /5030AND1,2-Dichlorobenzene mg/kg dry 9/22/229/22/220.006 EPA 8260D /5030AND1,2-Dichloroethane mg/kg dry 9/22/229/22/220.006 EPA 8260D /5030AND1,2-Dichloropropane mg/kg dry 9/22/229/22/220.006 EPA 8260D /5030AND1,3,5-Trimethylbenzene mg/kg dry 9/22/229/22/220.006 EPA 8260D /5030AND1,3-Dichlorobenzene mg/kg dry 9/22/229/22/220.006 EPA 8260D /5030AND1,3-Dichloropropane mg/kg dry 9/22/229/22/220.006 EPA 8260D /5030AND1,4-Dichlorobenzene mg/kg dry 9/22/229/22/220.006 EPA 8260D /5030AND2,2-Dichloropropane mg/kg dry 9/22/229/22/220.006 EPA 8260D /5030AND2-Chlorotoluene mg/kg dry J-LOW9/22/229/22/220.06 EPA 8260D /5030AND2-Nitropropane mg/kg dry 9/22/229/22/220.006 EPA 8260D /5030AND4-Chlorotoluene mg/kg dry 9/22/229/22/220.006 EPA 8260D /5030ANDp-Isopropyltoluene mg/kg dry 9/22/229/22/220.06 EPA 8260D /5030A2.04Acetone mg/kg dry 9/22/229/22/220.002 EPA 8260D /5030ANDBenzene mg/kg dry 9/22/229/22/220.006 EPA 8260D /5030ANDBromobenzene mg/kg dry 9/22/229/22/220.006 EPA 8260D /5030ANDBromochloromethane mg/kg dry 9/22/229/22/220.006 EPA 8260D /5030ANDBromodichloromethane mg/kg dry 9/22/229/22/220.006 EPA 8260D /5030ANDBromoform mg/kg dry 9/22/229/22/220.006 EPA 8260D /5030ANDBromomethane Project Name: 19219-3965 S. Washington Blvd, Ogden, UT CtF WO#: 22I1431 www.ChemtechFord.com Page 17 of 43Page 17 of 43 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 Engineering Michael Sauerwein 2800 South Redwood Road West Valley City, UT 84119-2375 PO#: Receipt: Date Reported: Project Name: 9/16/22 10:25 @ 6.1 °C 9/22/2022 19219-3965 S. Washington Blvd, Ogden, UT Sample ID: B6-18' (cont.) Lab ID: 22I1431-06Matrix: Solid Flag(s)Units Analysis Date/Time Date Sampled: 9/15/22 13:50 Preparation Date/Time Sampled By: Michael Sauerwein Minimum Reporting Limit MethodResult Volatile Organic Compounds (cont.) mg/kg dry 9/22/229/22/220.006 EPA 8260D /5030ANDCarbon Disulfide mg/kg dry 9/22/229/22/220.006 EPA 8260D /5030ANDCarbon Tetrachloride mg/kg dry 9/22/229/22/220.006 EPA 8260D /5030ANDChlorobenzene mg/kg dry 9/22/229/22/220.006 EPA 8260D /5030ANDChloroethane mg/kg dry 9/22/229/22/220.006 EPA 8260D /5030ANDChloroform mg/kg dry 9/22/229/22/220.006 EPA 8260D /5030ANDChloromethane mg/kg dry 9/22/229/22/220.006 EPA 8260D /5030ANDcis-1,2-Dichloroethene mg/kg dry 9/22/229/22/220.006 EPA 8260D /5030ANDcis-1,3-Dichloropropene mg/kg dry 9/22/229/22/220.12 EPA 8260D /5030ANDCyclohexanone mg/kg dry 9/22/229/22/220.006 EPA 8260D /5030ANDDibromochloromethane mg/kg dry 9/22/229/22/220.006 EPA 8260D /5030ANDDibromomethane mg/kg dry 9/22/229/22/220.006 EPA 8260D /5030ANDDichlorodifluoromethane mg/kg dry 9/22/229/22/220.06 EPA 8260D /5030ANDEthyl Acetate mg/kg dry 9/22/229/22/220.006 EPA 8260D /5030ANDEthyl Ether mg/kg dry 9/22/229/22/220.006 EPA 8260D /5030ANDEthylbenzene mg/kg dry 9/22/229/22/220.006 EPA 8260D /5030ANDHexachlorobutadiene mg/kg dry 9/22/229/22/220.12 EPA 8260D /5030ANDIsobutanol mg/kg dry 9/22/229/22/220.006 EPA 8260D /5030ANDIsopropylbenzene mg/kg dry 9/22/229/22/220.06 EPA 8260D /5030ANDMethyl Ethyl Ketone mg/kg dry 9/22/229/22/220.06 EPA 8260D /5030ANDMethyl Isobutyl Ketone mg/kg dry 9/22/229/22/220.12 EPA 8260D /5030ANDMethylene Chloride mg/kg dry 9/22/229/22/220.006 EPA 8260D /5030A0.02Methyl-tert-butyl ether (MTBE) mg/kg dry 9/22/229/22/220.006 EPA 8260D /5030A0.03Naphthalene mg/kg dry 9/22/229/22/220.12 EPA 8260D /5030ANDn-Butyl Alcohol mg/kg dry 9/22/229/22/220.006 EPA 8260D /5030ANDn-Butylbenzene mg/kg dry 9/22/229/22/220.12 EPA 8260D /5030ANDNitrobenzene mg/kg dry J9/22/229/22/220.006 EPA 8260D /5030A0.005n-Propyl Benzene mg/kg dry 9/22/229/22/220.006 EPA 8260D /5030A0.007sec-Butyl Benzene mg/kg dry 9/22/229/22/220.006 EPA 8260D /5030ANDStyrene mg/kg dry 9/22/229/22/220.006 EPA 8260D /5030ANDtert-Butylbenzene mg/kg dry 9/22/229/22/220.006 EPA 8260D /5030ANDTetrachloroethene mg/kg dry 9/22/229/22/220.006 EPA 8260D /5030ANDToluene mg/kg dry 9/22/229/22/220.006 EPA 8260D /5030ANDtrans-1,2-Dichloroethene mg/kg dry 9/22/229/22/220.006 EPA 8260D /5030ANDtrans-1,3-Dichloropropene mg/kg dry 9/22/229/22/220.006 EPA 8260D /5030ANDTrichloroethene mg/kg dry 9/22/229/22/220.006 EPA 8260D /5030ANDTrichlorofluoromethane mg/kg dry 9/22/229/22/220.006 EPA 8260D /5030ANDVinyl Chloride Project Name: 19219-3965 S. Washington Blvd, Ogden, UT CtF WO#: 22I1431 www.ChemtechFord.com Page 18 of 43Page 18 of 43 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 Engineering Michael Sauerwein 2800 South Redwood Road West Valley City, UT 84119-2375 PO#: Receipt: Date Reported: Project Name: 9/16/22 10:25 @ 6.1 °C 9/22/2022 19219-3965 S. Washington Blvd, Ogden, UT Sample ID: B6-18' (cont.) Lab ID: 22I1431-06Matrix: Solid Flag(s)Units Analysis Date/Time Date Sampled: 9/15/22 13:50 Preparation Date/Time Sampled By: Michael Sauerwein Minimum Reporting Limit MethodResult Volatile Organic Compounds (cont.) mg/kg dry 9/22/229/22/220.006 EPA 8260D /5030ANDXylenes, total mg/kg dry 9/22/229/22/220.06 EPA 8260D /5030ANDC5-C6 Aliphatic hydrocarbons mg/kg dry 9/22/229/22/220.06 EPA 8260D /5030A0.18C7-C8 Aliphatic hydrocarbons mg/kg dry 9/22/229/22/220.06 EPA 8260D /5030A0.08C9-C10 Aliphatic hydrocarbons mg/kg dry 9/22/229/22/220.06 EPA 8260D /5030A0.27C9-C10 Alkyl Benzenes mg/kg dry 9/22/229/22/220.06 EPA 8260D /5030A0.57Gasoline Range Organics Project Name: 19219-3965 S. Washington Blvd, Ogden, UT CtF WO#: 22I1431 www.ChemtechFord.com Page 19 of 43Page 19 of 43 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 Engineering Michael Sauerwein 2800 South Redwood Road West Valley City, UT 84119-2375 PO#: Receipt: Date Reported: Project Name: 9/16/22 10:25 @ 6.1 °C 9/22/2022 19219-3965 S. Washington Blvd, Ogden, UT Sample ID: B7-16' Lab ID: 22I1431-07Matrix: Solid Flag(s)Units Analysis Date/Time Date Sampled: 9/15/22 14:50 Preparation Date/Time Sampled By: Michael Sauerwein Minimum Reporting Limit MethodResult Inorganic %9/19/229/16/220.1 EPA 8000C84.4Total Solids Diesel Range mg/kg dry 9/21/229/20/2259EPA 8015C/3550BNDDiesel Range Organics Volatile Organic Compounds mg/kg dry 9/21/229/21/220.005 EPA 8260D /5030AND1,1,1,2-Tetrachloroethane mg/kg dry 9/21/229/21/220.005 EPA 8260D /5030AND1,1,1-Trichloroethane mg/kg dry 9/21/229/21/220.005 EPA 8260D /5030AND1,1,2,2-Tetrachloroethane mg/kg dry 9/21/229/21/220.005 EPA 8260D /5030AND1,1,2-Trichloroethane mg/kg dry 9/21/229/21/220.005 EPA 8260D /5030AND1,1,2-Trichlorotrifluoroethane mg/kg dry 9/21/229/21/220.005 EPA 8260D /5030AND1,1-Dichloroethane mg/kg dry 9/21/229/21/220.005 EPA 8260D /5030AND1,1-Dichloroethene mg/kg dry 9/21/229/21/220.005 EPA 8260D /5030AND1,1-Dichloropropene mg/kg dry 9/21/229/21/220.005 EPA 8260D /5030AND1,2,3-Trichlorobenzene mg/kg dry 9/21/229/21/220.005 EPA 8260D /5030AND1,2,3-Trichloropropane mg/kg dry 9/21/229/21/220.005 EPA 8260D /5030AND1,2,4-Trichlorobenzene mg/kg dry 9/21/229/21/220.005 EPA 8260D /5030AND1,2,4-Trimethylbenzene mg/kg dry 9/21/229/21/220.005 EPA 8260D /5030AND1,2-Dibromo-3-chloropropane mg/kg dry 9/21/229/21/220.005 EPA 8260D /5030AND1,2-Dibromoethane (EDB) mg/kg dry 9/21/229/21/220.005 EPA 8260D /5030AND1,2-Dichlorobenzene mg/kg dry 9/21/229/21/220.005 EPA 8260D /5030AND1,2-Dichloroethane mg/kg dry 9/21/229/21/220.005 EPA 8260D /5030AND1,2-Dichloropropane mg/kg dry 9/21/229/21/220.005 EPA 8260D /5030AND1,3,5-Trimethylbenzene mg/kg dry 9/21/229/21/220.005 EPA 8260D /5030AND1,3-Dichlorobenzene mg/kg dry 9/21/229/21/220.005 EPA 8260D /5030AND1,3-Dichloropropane mg/kg dry 9/21/229/21/220.005 EPA 8260D /5030AND1,4-Dichlorobenzene mg/kg dry 9/21/229/21/220.005 EPA 8260D /5030AND2,2-Dichloropropane mg/kg dry 9/21/229/21/220.005 EPA 8260D /5030AND2-Chlorotoluene mg/kg dry 9/21/229/21/220.05 EPA 8260D /5030AND2-Nitropropane mg/kg dry 9/21/229/21/220.005 EPA 8260D /5030AND4-Chlorotoluene mg/kg dry 9/21/229/21/220.005 EPA 8260D /5030ANDp-Isopropyltoluene mg/kg dry 9/21/229/21/220.05 EPA 8260D /5030ANDAcetone mg/kg dry 9/21/229/21/220.002 EPA 8260D /5030ANDBenzene mg/kg dry 9/21/229/21/220.005 EPA 8260D /5030ANDBromobenzene mg/kg dry 9/21/229/21/220.005 EPA 8260D /5030ANDBromochloromethane mg/kg dry 9/21/229/21/220.005 EPA 8260D /5030ANDBromodichloromethane mg/kg dry 9/21/229/21/220.005 EPA 8260D /5030ANDBromoform mg/kg dry 9/21/229/21/220.005 EPA 8260D /5030ANDBromomethane Project Name: 19219-3965 S. Washington Blvd, Ogden, UT CtF WO#: 22I1431 www.ChemtechFord.com Page 20 of 43Page 20 of 43 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 Engineering Michael Sauerwein 2800 South Redwood Road West Valley City, UT 84119-2375 PO#: Receipt: Date Reported: Project Name: 9/16/22 10:25 @ 6.1 °C 9/22/2022 19219-3965 S. Washington Blvd, Ogden, UT Sample ID: B7-16' (cont.) Lab ID: 22I1431-07Matrix: Solid Flag(s)Units Analysis Date/Time Date Sampled: 9/15/22 14:50 Preparation Date/Time Sampled By: Michael Sauerwein Minimum Reporting Limit MethodResult Volatile Organic Compounds (cont.) mg/kg dry 9/21/229/21/220.005 EPA 8260D /5030ANDCarbon Disulfide mg/kg dry 9/21/229/21/220.005 EPA 8260D /5030ANDCarbon Tetrachloride mg/kg dry 9/21/229/21/220.005 EPA 8260D /5030ANDChlorobenzene mg/kg dry 9/21/229/21/220.005 EPA 8260D /5030ANDChloroethane mg/kg dry 9/21/229/21/220.005 EPA 8260D /5030ANDChloroform mg/kg dry 9/21/229/21/220.005 EPA 8260D /5030ANDChloromethane mg/kg dry 9/21/229/21/220.005 EPA 8260D /5030ANDcis-1,2-Dichloroethene mg/kg dry 9/21/229/21/220.005 EPA 8260D /5030ANDcis-1,3-Dichloropropene mg/kg dry 9/21/229/21/220.11 EPA 8260D /5030ANDCyclohexanone mg/kg dry 9/21/229/21/220.005 EPA 8260D /5030ANDDibromochloromethane mg/kg dry 9/21/229/21/220.005 EPA 8260D /5030ANDDibromomethane mg/kg dry 9/21/229/21/220.005 EPA 8260D /5030ANDDichlorodifluoromethane mg/kg dry 9/21/229/21/220.05 EPA 8260D /5030ANDEthyl Acetate mg/kg dry 9/21/229/21/220.005 EPA 8260D /5030ANDEthyl Ether mg/kg dry 9/21/229/21/220.005 EPA 8260D /5030ANDEthylbenzene mg/kg dry 9/21/229/21/220.005 EPA 8260D /5030ANDHexachlorobutadiene mg/kg dry 9/21/229/21/220.11 EPA 8260D /5030ANDIsobutanol mg/kg dry 9/21/229/21/220.005 EPA 8260D /5030ANDIsopropylbenzene mg/kg dry 9/21/229/21/220.05 EPA 8260D /5030ANDMethyl Ethyl Ketone mg/kg dry 9/21/229/21/220.05 EPA 8260D /5030ANDMethyl Isobutyl Ketone mg/kg dry 9/21/229/21/220.11 EPA 8260D /5030ANDMethylene Chloride mg/kg dry 9/21/229/21/220.005 EPA 8260D /5030A0.006Methyl-tert-butyl ether (MTBE) mg/kg dry 9/21/229/21/220.005 EPA 8260D /5030A0.006Naphthalene mg/kg dry 9/21/229/21/220.11 EPA 8260D /5030ANDn-Butyl Alcohol mg/kg dry 9/21/229/21/220.005 EPA 8260D /5030ANDn-Butylbenzene mg/kg dry 9/21/229/21/220.11 EPA 8260D /5030ANDNitrobenzene mg/kg dry 9/21/229/21/220.005 EPA 8260D /5030ANDn-Propyl Benzene mg/kg dry 9/21/229/21/220.005 EPA 8260D /5030ANDsec-Butyl Benzene mg/kg dry 9/21/229/21/220.005 EPA 8260D /5030ANDStyrene mg/kg dry 9/21/229/21/220.005 EPA 8260D /5030ANDtert-Butylbenzene mg/kg dry 9/21/229/21/220.005 EPA 8260D /5030ANDTetrachloroethene mg/kg dry 9/21/229/21/220.005 EPA 8260D /5030ANDToluene mg/kg dry 9/21/229/21/220.005 EPA 8260D /5030ANDtrans-1,2-Dichloroethene mg/kg dry 9/21/229/21/220.005 EPA 8260D /5030ANDtrans-1,3-Dichloropropene mg/kg dry 9/21/229/21/220.005 EPA 8260D /5030ANDTrichloroethene mg/kg dry 9/21/229/21/220.005 EPA 8260D /5030ANDTrichlorofluoromethane mg/kg dry 9/21/229/21/220.005 EPA 8260D /5030ANDVinyl Chloride Project Name: 19219-3965 S. Washington Blvd, Ogden, UT CtF WO#: 22I1431 www.ChemtechFord.com Page 21 of 43Page 21 of 43 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 Engineering Michael Sauerwein 2800 South Redwood Road West Valley City, UT 84119-2375 PO#: Receipt: Date Reported: Project Name: 9/16/22 10:25 @ 6.1 °C 9/22/2022 19219-3965 S. Washington Blvd, Ogden, UT Sample ID: B7-16' (cont.) Lab ID: 22I1431-07Matrix: Solid Flag(s)Units Analysis Date/Time Date Sampled: 9/15/22 14:50 Preparation Date/Time Sampled By: Michael Sauerwein Minimum Reporting Limit MethodResult Volatile Organic Compounds (cont.) mg/kg dry 9/21/229/21/220.005 EPA 8260D /5030ANDXylenes, total mg/kg dry 9/21/229/21/220.05 EPA 8260D /5030ANDC5-C6 Aliphatic hydrocarbons mg/kg dry 9/21/229/21/220.05 EPA 8260D /5030ANDC7-C8 Aliphatic hydrocarbons mg/kg dry 9/21/229/21/220.05 EPA 8260D /5030ANDC9-C10 Aliphatic hydrocarbons mg/kg dry 9/21/229/21/220.05 EPA 8260D /5030ANDC9-C10 Alkyl Benzenes mg/kg dry 9/21/229/21/220.05 EPA 8260D /5030ANDGasoline Range Organics Project Name: 19219-3965 S. Washington Blvd, Ogden, UT CtF WO#: 22I1431 www.ChemtechFord.com Page 22 of 43Page 22 of 43 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 Engineering Michael Sauerwein 2800 South Redwood Road West Valley City, UT 84119-2375 PO#: Receipt: Date Reported: Project Name: 9/16/22 10:25 @ 6.1 °C 9/22/2022 19219-3965 S. Washington Blvd, Ogden, UT 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. Flag Descriptions J = Detected but below the Reporting Limit; therefore, result is an estimated concentration (CLP J-Flag). J-LOW = Estimated low due to low recovery of LCS or CCV S-HB = Surrogate exceeds upper control limit. All associated analytes are non-detect and therefore accepted. Project Name: 19219-3965 S. Washington Blvd, Ogden, UT CtF WO#: 22I1431 www.ChemtechFord.com Page 23 of 43Page 23 of 43 Page 24 of 43 QC Report for Work Order (WO) - 22I1431 % Rec RPD RPD Max MRL DFResultSpk ValueLimitsSource ConcAnalyte Duplicate - EPA 8000C QC Sample ID: BWI0867-DUP1 QC Source Sample: XXXXXXX-XXBatch: BWI0867 Date Prepared: 09/16/2022 Date Analyzed: 09/19/2022 Total Solids 20 ND 98.9 0.1 1.00 QC Sample ID: BWI0867-DUP2 QC Source Sample: XXXXXXX-XXBatch: BWI0867 Date Prepared: 09/16/2022 Date Analyzed: 09/19/2022 Total Solids 20 ND 88.0 0.1 1.00 QC Sample ID: BWI0867-DUP3 QC Source Sample: XXXXXXX-XXBatch: BWI0867 Date Prepared: 09/16/2022 Date Analyzed: 09/19/2022 Total Solids 4.21 20 89.4 93.3 0.1 1.00 QC Sample ID: BWI0867-DUP4 QC Source Sample: XXXXXXX-XXBatch: BWI0867 Date Prepared: 09/16/2022 Date Analyzed: 09/19/2022 Total Solids 9.51 20 89.5 81.4 0.1 1.00 QC Sample ID: BWI0867-DUP5 QC Source Sample: XXXXXXX-XXBatch: BWI0867 Date Prepared: 09/16/2022 Date Analyzed: 09/19/2022 Total Solids 20 ND 93.8 0.1 1.00 CtF WO#: 22I1431 www.ChemtechFord.com Page 25 of 43 QC Report for Work Order (WO) - 22I1431 % Rec RPD RPD Max MRL DFResultSpk ValueLimitsSource ConcAnalyte Blank - EPA 8015C/3550B QC Sample ID: BWI0971-BLK1 Batch: BWI0971 Date Prepared: 09/19/2022 Date Analyzed: 09/20/2022 Diesel Range Organics ND 50 1.00 QC Sample ID: BWI1028-BLK1 Batch: BWI1028 Date Prepared: 09/20/2022 Date Analyzed: 09/20/2022 Diesel Range Organics ND 50 1.00 QC Sample ID: BWI1030-BLK1 Batch: BWI1030 Date Prepared: 09/20/2022 Date Analyzed: 09/21/2022 Diesel Range Organics ND 50 1.00 LCS - EPA 8015C/3550B QC Sample ID: BWI0971-BS1 Batch: BWI0971 Date Prepared: 09/19/2022 Date Analyzed: 09/20/2022 Diesel Range Organics 95.7 50 - 150 1910 2000 50 1.00 QC Sample ID: BWI1028-BS1 Batch: BWI1028 Date Prepared: 09/20/2022 Date Analyzed: 09/20/2022 Diesel Range Organics 105 50 - 150 2100 2000 50 1.00 QC Sample ID: BWI1030-BS1 Batch: BWI1030 Date Prepared: 09/20/2022 Date Analyzed: 09/21/2022 Diesel Range Organics 106 50 - 150 2110 2000 50 1.00 Matrix Spike - EPA 8015C/3550B QC Sample ID: BWI0971-MS1 QC Source Sample: 22I1431-02Batch: BWI0971 Date Prepared: 09/19/2022 Date Analyzed: 09/20/2022 Diesel Range Organics 99.7 50 - 150 2550 ND 2560 64 1.00 QC Sample ID: BWI1028-MS1 QC Source Sample: 22I1431-04Batch: BWI1028 Date Prepared: 09/20/2022 Date Analyzed: 09/20/2022 Diesel Range Organics 106 50 - 150 2650 ND 2500 62 1.00 QC Sample ID: BWI1030-MS1 QC Source Sample: XXXXXXX-XXBatch: BWI1030 Date Prepared: 09/20/2022 Date Analyzed: 09/21/2022 Diesel Range Organics 107 50 - 150 3030 ND 2840 71 1.00 Matrix Spike Dup - EPA 8015C/3550B QC Sample ID: BWI0971-MSD1 QC Source Sample: 22I1431-02Batch: BWI0971 Date Prepared: 09/19/2022 Date Analyzed: 09/20/2022 Diesel Range Organics 96.5 3.20 50 - 150 20 2470 ND 2560 64 1.00 QC Sample ID: BWI1028-MSD1 QC Source Sample: 22I1431-04Batch: BWI1028 Date Prepared: 09/20/2022 Date Analyzed: 09/20/2022 Diesel Range Organics 107 0.618 50 - 150 20 2670 ND 2500 62 1.00 QC Sample ID: BWI1030-MSD1 QC Source Sample: XXXXXXX-XXBatch: BWI1030 Date Prepared: 09/20/2022 Date Analyzed: 09/21/2022 Diesel Range Organics 103 3.35 50 - 150 20 2930 ND 2840 71 1.00 CtF WO#: 22I1431 www.ChemtechFord.com Page 26 of 43 QC Report for Work Order (WO) - 22I1431 % Rec RPD RPD Max MRL DFResultSpk ValueLimitsSource ConcAnalyte Blank - EPA 8260D /5030A QC Sample ID: BWI1119-BLK1 Batch: BWI1119 Date Prepared: 09/21/2022 Date Analyzed: 09/21/2022 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 0.01 1.00 4-Chlorotoluene ND 0.001 1.00 Acetone ND 0.01 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 0.001 1.00 Carbon Disulfide ND 0.001 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 0.02 1.00 Dibromochloromethane ND 0.001 1.00 Dibromomethane ND 0.001 1.00 Dichlorodifluoromethane ND 0.001 1.00 Ethyl Acetate ND 0.01 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 0.01 1.00 CtF WO#: 22I1431 www.ChemtechFord.com Page 27 of 43 QC Report for Work Order (WO) - 22I1431 % Rec RPD RPD Max MRL DFResultSpk ValueLimitsSource ConcAnalyte Blank - EPA 8260D /5030A (cont.) QC Sample ID: BWI1119-BLK1 Batch: BWI1119 Date Prepared: 09/21/2022 Date Analyzed: 09/21/2022 Methyl Isobutyl Ketone ND 0.01 1.00 Methylene Chloride ND 0.02 1.00 Methyl-tert-butyl ether (MTBE)ND 0.001 1.00 Naphthalene ND 0.001 1.00 n-Butyl Alcohol ND 0.02 1.00 n-Butylbenzene ND 0.001 1.00 Nitrobenzene ND 0.02 1.00 n-Propyl Benzene 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 0.001 1.00 Xylenes, total ND 0.001 1.00 QC Sample ID: BWI1163-BLK1 Batch: BWI1163 Date Prepared: 09/22/2022 Date Analyzed: 09/22/2022 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 0.01 1.00 J-LOW - Estimated low due to low recovery of LCS or CCV 4-Chlorotoluene ND 0.001 1.00 Acetone ND 0.01 1.00 Benzene ND 0.0004 1.00 CtF WO#: 22I1431 www.ChemtechFord.com Page 28 of 43 QC Report for Work Order (WO) - 22I1431 % Rec RPD RPD Max MRL DFResultSpk ValueLimitsSource ConcAnalyte Blank - EPA 8260D /5030A (cont.) QC Sample ID: BWI1163-BLK1 Batch: BWI1163 Date Prepared: 09/22/2022 Date Analyzed: 09/22/2022 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 0.001 1.00 Carbon Disulfide ND 0.001 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 0.02 1.00 Dibromochloromethane ND 0.001 1.00 Dibromomethane ND 0.001 1.00 Dichlorodifluoromethane ND 0.001 1.00 Ethyl Acetate ND 0.01 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 0.01 1.00 Methyl Isobutyl Ketone ND 0.01 1.00 Methylene Chloride ND 0.02 1.00 Methyl-tert-butyl ether (MTBE)ND 0.001 1.00 Naphthalene ND 0.001 1.00 n-Butyl Alcohol ND 0.02 1.00 n-Butylbenzene ND 0.001 1.00 Nitrobenzene ND 0.02 1.00 n-Propyl Benzene 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 0.001 1.00 Xylenes, total ND 0.001 1.00 LCS - EPA 8260D /5030A QC Sample ID: BWI1119-BS1 Batch: BWI1119 Date Prepared: 09/21/2022 Date Analyzed: 09/21/2022 1,1,1,2-Tetrachloroethane 128 70 - 130 0.01 0.0100 0.001 1.00 1,1,1-Trichloroethane 137 70 - 130 0.01 0.0100 0.001 1.00 CtF WO#: 22I1431 www.ChemtechFord.com Page 29 of 43 QC Report for Work Order (WO) - 22I1431 % Rec RPD RPD Max MRL DFResultSpk ValueLimitsSource ConcAnalyte LCS - EPA 8260D /5030A (cont.) QC Sample ID: BWI1119-BS1 Batch: BWI1119 Date Prepared: 09/21/2022 Date Analyzed: 09/21/2022 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. 1,1,2,2-Tetrachloroethane 115 70 - 130 0.01 0.0100 0.001 1.00 1,1,2-Trichloroethane 109 70 - 130 0.01 0.0100 0.001 1.00 1,1,2-Trichlorotrifluoroethane 110 70 - 130 0.01 0.0100 0.001 1.00 1,1-Dichloroethane 141 70 - 130 0.01 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-Dichloroethene 123 70 - 130 0.01 0.0100 0.001 1.00 1,1-Dichloropropene 120 70 - 130 0.01 0.0100 0.001 1.00 1,2,3-Trichlorobenzene 104 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 108 70 - 130 0.01 0.0100 0.001 1.00 1,2,4-Trimethylbenzene 129 70 - 130 0.01 0.0100 0.001 1.00 1,2-Dibromo-3-chloropropane 104 70 - 130 0.01 0.0100 0.001 1.00 1,2-Dibromoethane (EDB)113 70 - 130 0.01 0.0100 0.001 1.00 1,2-Dichlorobenzene 116 70 - 130 0.01 0.0100 0.001 1.00 1,2-Dichloroethane 115 70 - 130 0.01 0.0100 0.001 1.00 1,2-Dichloropropane 123 70 - 130 0.01 0.0100 0.001 1.00 1,3,5-Trimethylbenzene 131 70 - 130 0.01 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. 1,3-Dichlorobenzene 121 70 - 130 0.01 0.0100 0.001 1.00 1,3-Dichloropropane 116 70 - 130 0.01 0.0100 0.001 1.00 1,4-Dichlorobenzene 119 70 - 130 0.01 0.0100 0.001 1.00 2,2-Dichloropropane 151 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. 2-Chlorotoluene 129 70 - 130 0.01 0.0100 0.001 1.00 2-Nitropropane 76.4 70 - 130 0.03 0.0350 0.01 1.00 4-Chlorotoluene 127 70 - 130 0.01 0.0100 0.001 1.00 Acetone 73.2 70 - 130 0.07 0.100 0.01 1.00 Benzene 121 70 - 130 0.01 0.0100 0.0004 1.00 Bromobenzene 119 70 - 130 0.01 0.0100 0.001 1.00 Bromochloromethane 127 70 - 130 0.01 0.0100 0.001 1.00 Bromodichloromethane 119 70 - 130 0.01 0.0100 0.001 1.00 Bromoform 110 70 - 130 0.01 0.0100 0.001 1.00 Bromomethane 129 70 - 130 0.01 0.0100 0.001 1.00 Carbon Disulfide 112 70 - 130 0.01 0.0100 0.001 1.00 Carbon Tetrachloride 130 70 - 130 0.01 0.0100 0.001 1.00 Chlorobenzene 118 70 - 130 0.01 0.0100 0.001 1.00 Chloroethane 134 70 - 130 0.01 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. Chloroform 134 70 - 130 0.01 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. Chloromethane 103 70 - 130 0.01 0.0100 0.001 1.00 cis-1,2-Dichloroethene 129 70 - 130 0.01 0.0100 0.001 1.00 cis-1,3-Dichloropropene 114 70 - 130 0.01 0.0100 0.001 1.00 Cyclohexanone 83.5 70 - 130 0.17 0.200 0.02 1.00 Dibromochloromethane 119 70 - 130 0.01 0.0100 0.001 1.00 CtF WO#: 22I1431 www.ChemtechFord.com Page 30 of 43 QC Report for Work Order (WO) - 22I1431 % Rec RPD RPD Max MRL DFResultSpk ValueLimitsSource ConcAnalyte LCS - EPA 8260D /5030A (cont.) QC Sample ID: BWI1119-BS1 Batch: BWI1119 Date Prepared: 09/21/2022 Date Analyzed: 09/21/2022 Dibromomethane 105 70 - 130 0.01 0.0100 0.001 1.00 Dichlorodifluoromethane 123 70 - 130 0.01 0.0100 0.001 1.00 Ethyl Acetate 113 70 - 130 0.11 0.100 0.01 1.00 Ethyl Ether 103 70 - 130 0.01 0.0100 0.001 1.00 Ethylbenzene 122 70 - 130 0.01 0.0100 0.001 1.00 Hexachlorobutadiene 104 70 - 130 0.01 0.0100 0.001 1.00 Hexane 70 - 130 ND 0.0100 0.001 1.00 Isobutanol 116 70 - 130 0.23 0.200 0.02 1.00 Isopropylbenzene 129 70 - 130 0.01 0.0100 0.001 1.00 Methyl Ethyl Ketone 98.5 70 - 130 0.10 0.100 0.01 1.00 Methyl Isobutyl Ketone 108 70 - 130 0.11 0.100 0.01 1.00 Methylene Chloride 122 70 - 130 0.01 0.0100 0.02 1.00 J - Detected but below the Reporting Limit; therefore, result is an estimated concentration (CLP J-Flag). Methyl-tert-butyl ether (MTBE)111 70 - 130 0.01 0.0100 0.001 1.00 Naphthalene 86.4 70 - 130 0.009 0.0100 0.001 1.00 n-Butyl Alcohol 111 70 - 130 0.22 0.200 0.02 1.00 n-Butylbenzene 121 70 - 130 0.01 0.0100 0.001 1.00 Nitrobenzene 76.9 70 - 130 0.15 0.200 0.02 1.00 n-Propyl Benzene 130 70 - 130 0.01 0.0100 0.001 1.00 p-Isopropyltoluene 127 70 - 130 0.01 0.0100 0.001 1.00 sec-Butyl Benzene 130 70 - 130 0.01 0.0100 0.001 1.00 Styrene 122 70 - 130 0.01 0.0100 0.001 1.00 tert-Butylbenzene 125 70 - 130 0.01 0.0100 0.001 1.00 Tetrachloroethene 121 70 - 130 0.01 0.0100 0.001 1.00 Toluene 114 70 - 130 0.01 0.0100 0.001 1.00 trans-1,2-Dichloroethene 134 70 - 130 0.01 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. trans-1,3-Dichloropropene 113 70 - 130 0.01 0.0100 0.001 1.00 Trichloroethene 115 70 - 130 0.01 0.0100 0.001 1.00 Trichlorofluoromethane 123 70 - 130 0.01 0.0100 0.001 1.00 Vinyl Chloride 141 70 - 130 0.01 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. Xylenes, total 128 70 - 130 0.04 0.0300 0.001 1.00 QC Sample ID: BWI1163-BS1 Batch: BWI1163 Date Prepared: 09/22/2022 Date Analyzed: 09/22/2022 1,1,1,2-Tetrachloroethane 110 70 - 130 0.01 0.0100 0.001 1.00 1,1,1-Trichloroethane 110 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 96.9 70 - 130 0.01 0.0100 0.001 1.00 1,1,2-Trichlorotrifluoroethane 105 70 - 130 0.01 0.0100 0.001 1.00 1,1-Dichloroethane 112 70 - 130 0.01 0.0100 0.001 1.00 1,1-Dichloroethene 99.6 70 - 130 0.01 0.0100 0.001 1.00 1,1-Dichloropropene 103 70 - 130 0.01 0.0100 0.001 1.00 1,2,3-Trichlorobenzene 96.1 70 - 130 0.01 0.0100 0.001 1.00 1,2,3-Trichloropropane 104 70 - 130 0.01 0.0100 0.001 1.00 1,2,4-Trichlorobenzene 97.4 70 - 130 0.01 0.0100 0.001 1.00 1,2,4-Trimethylbenzene 112 70 - 130 0.01 0.0100 0.001 1.00 1,2-Dibromo-3-chloropropane 83.7 70 - 130 0.008 0.0100 0.001 1.00 1,2-Dibromoethane (EDB)101 70 - 130 0.01 0.0100 0.001 1.00 CtF WO#: 22I1431 www.ChemtechFord.com Page 31 of 43 QC Report for Work Order (WO) - 22I1431 % Rec RPD RPD Max MRL DFResultSpk ValueLimitsSource ConcAnalyte LCS - EPA 8260D /5030A (cont.) QC Sample ID: BWI1163-BS1 Batch: BWI1163 Date Prepared: 09/22/2022 Date Analyzed: 09/22/2022 1,2-Dichlorobenzene 100 70 - 130 0.01 0.0100 0.001 1.00 1,2-Dichloroethane 100 70 - 130 0.01 0.0100 0.001 1.00 1,2-Dichloropropane 103 70 - 130 0.01 0.0100 0.001 1.00 1,3,5-Trimethylbenzene 114 70 - 130 0.01 0.0100 0.001 1.00 1,3-Dichlorobenzene 105 70 - 130 0.01 0.0100 0.001 1.00 1,3-Dichloropropane 101 70 - 130 0.01 0.0100 0.001 1.00 1,4-Dichlorobenzene 106 70 - 130 0.01 0.0100 0.001 1.00 2,2-Dichloropropane 119 70 - 130 0.01 0.0100 0.001 1.00 2-Chlorotoluene 113 70 - 130 0.01 0.0100 0.001 1.00 2-Nitropropane 68.3 70 - 130 0.02 0.0350 0.01 1.00 J-LOW - Estimated low due to low recovery of LCS or CCV 4-Chlorotoluene 112 70 - 130 0.01 0.0100 0.001 1.00 Acetone 78.2 70 - 130 0.08 0.100 0.01 1.00 Benzene 105 70 - 130 0.01 0.0100 0.0004 1.00 Bromobenzene 107 70 - 130 0.01 0.0100 0.001 1.00 Bromochloromethane 106 70 - 130 0.01 0.0100 0.001 1.00 Bromodichloromethane 104 70 - 130 0.01 0.0100 0.001 1.00 Bromoform 99.4 70 - 130 0.01 0.0100 0.001 1.00 Bromomethane 76.4 70 - 130 0.008 0.0100 0.001 1.00 Carbon Disulfide 107 70 - 130 0.01 0.0100 0.001 1.00 Carbon Tetrachloride 115 70 - 130 0.01 0.0100 0.001 1.00 Chlorobenzene 104 70 - 130 0.01 0.0100 0.001 1.00 Chloroethane 77.1 70 - 130 0.008 0.0100 0.001 1.00 Chloroform 107 70 - 130 0.01 0.0100 0.001 1.00 Chloromethane 82.7 70 - 130 0.008 0.0100 0.001 1.00 cis-1,2-Dichloroethene 105 70 - 130 0.01 0.0100 0.001 1.00 cis-1,3-Dichloropropene 99.3 70 - 130 0.01 0.0100 0.001 1.00 Cyclohexanone 81.5 70 - 130 0.16 0.200 0.02 1.00 Dibromochloromethane 106 70 - 130 0.01 0.0100 0.001 1.00 Dibromomethane 96.0 70 - 130 0.01 0.0100 0.001 1.00 Dichlorodifluoromethane 99.9 70 - 130 0.01 0.0100 0.001 1.00 Ethyl Acetate 93.0 70 - 130 0.09 0.100 0.01 1.00 Ethyl Ether 72.2 70 - 130 0.007 0.0100 0.001 1.00 Ethylbenzene 106 70 - 130 0.01 0.0100 0.001 1.00 Hexachlorobutadiene 97.8 70 - 130 0.01 0.0100 0.001 1.00 Hexane 70 - 130 ND 0.0100 0.001 1.00 Isobutanol 97.3 70 - 130 0.19 0.200 0.02 1.00 Isopropylbenzene 113 70 - 130 0.01 0.0100 0.001 1.00 Methyl Ethyl Ketone 89.6 70 - 130 0.09 0.100 0.01 1.00 Methyl Isobutyl Ketone 100 70 - 130 0.10 0.100 0.01 1.00 Methylene Chloride 102 70 - 130 0.01 0.0100 0.02 1.00 J - Detected but below the Reporting Limit; therefore, result is an estimated concentration (CLP J-Flag). Methyl-tert-butyl ether (MTBE)101 70 - 130 0.01 0.0100 0.001 1.00 Naphthalene 79.8 70 - 130 0.008 0.0100 0.001 1.00 n-Butyl Alcohol 92.1 70 - 130 0.18 0.200 0.02 1.00 n-Butylbenzene 102 70 - 130 0.01 0.0100 0.001 1.00 Nitrobenzene 67.3 70 - 130 0.13 0.200 0.02 1.00 n-Propyl Benzene 113 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 112 70 - 130 0.01 0.0100 0.001 1.00 Styrene 108 70 - 130 0.01 0.0100 0.001 1.00 CtF WO#: 22I1431 www.ChemtechFord.com Page 32 of 43 QC Report for Work Order (WO) - 22I1431 % Rec RPD RPD Max MRL DFResultSpk ValueLimitsSource ConcAnalyte LCS - EPA 8260D /5030A (cont.) QC Sample ID: BWI1163-BS1 Batch: BWI1163 Date Prepared: 09/22/2022 Date Analyzed: 09/22/2022 tert-Butylbenzene 110 70 - 130 0.01 0.0100 0.001 1.00 Tetrachloroethene 110 70 - 130 0.01 0.0100 0.001 1.00 Toluene 101 70 - 130 0.01 0.0100 0.001 1.00 trans-1,2-Dichloroethene 109 70 - 130 0.01 0.0100 0.001 1.00 trans-1,3-Dichloropropene 100 70 - 130 0.01 0.0100 0.001 1.00 Trichloroethene 103 70 - 130 0.01 0.0100 0.001 1.00 Trichlorofluoromethane 90.6 70 - 130 0.009 0.0100 0.001 1.00 Vinyl Chloride 105 70 - 130 0.01 0.0100 0.001 1.00 Xylenes, total 113 70 - 130 0.03 0.0300 0.001 1.00 Matrix Spike - EPA 8260D /5030A QC Sample ID: BWI1119-MS1 QC Source Sample: XXXXXXX-XXBatch: BWI1119 Date Prepared: 09/21/2022 Date Analyzed: 09/21/2022 1,1,1,2-Tetrachloroethane 114 70 - 130 0.05 ND 0.0477 0.005 1.00 1,1,1-Trichloroethane 113 70 - 130 0.05 ND 0.0477 0.005 1.00 1,1,2,2-Tetrachloroethane 119 70 - 130 0.06 ND 0.0477 0.005 1.00 1,1,2-Trichloroethane 128 70 - 130 0.06 ND 0.0477 0.005 1.00 1,1,2-Trichlorotrifluoroethane 88.1 70 - 130 0.04 ND 0.0477 0.005 1.00 1,1-Dichloroethane 124 70 - 130 0.06 ND 0.0477 0.005 1.00 1,1-Dichloroethene 104 70 - 130 0.05 ND 0.0477 0.005 1.00 1,1-Dichloropropene 100 70 - 130 0.05 ND 0.0477 0.005 1.00 1,2,3-Trichlorobenzene 99.5 70 - 130 0.05 ND 0.0477 0.005 1.00 1,2,3-Trichloropropane 133 70 - 130 0.06 ND 0.0477 0.005 1.00 MS-High - Estimated high due to Matrix Spike recovery. 1,2,4-Trichlorobenzene 96.0 70 - 130 0.05 ND 0.0477 0.005 1.00 1,2,4-Trimethylbenzene 104 70 - 130 0.05 ND 0.0477 0.005 1.00 1,2-Dibromo-3-chloropropane 127 70 - 130 0.06 ND 0.0477 0.005 1.00 1,2-Dibromoethane (EDB)130 70 - 130 0.06 ND 0.0477 0.005 1.00 1,2-Dichlorobenzene 107 70 - 130 0.05 ND 0.0477 0.005 1.00 1,2-Dichloroethane 124 70 - 130 0.06 ND 0.0477 0.005 1.00 1,2-Dichloropropane 118 70 - 130 0.06 ND 0.0477 0.005 1.00 1,3,5-Trimethylbenzene 102 70 - 130 0.05 ND 0.0477 0.005 1.00 1,3-Dichlorobenzene 104 70 - 130 0.05 ND 0.0477 0.005 1.00 1,3-Dichloropropane 127 70 - 130 0.06 ND 0.0477 0.005 1.00 1,4-Dichlorobenzene 103 70 - 130 0.05 ND 0.0477 0.005 1.00 2,2-Dichloropropane 124 70 - 130 0.06 ND 0.0477 0.005 1.00 2-Chlorotoluene 101 70 - 130 0.05 ND 0.0477 0.005 1.00 2-Nitropropane 99.6 70 - 130 0.17 ND 0.167 0.05 1.00 4-Chlorotoluene 104 70 - 130 0.05 ND 0.0477 0.005 1.00 Acetone 86.9 70 - 130 0.41 ND 0.477 0.05 1.00 Benzene 109 70 - 130 0.05 ND 0.0477 0.002 1.00 Bromobenzene 105 70 - 130 0.05 ND 0.0477 0.005 1.00 Bromochloromethane 129 70 - 130 0.06 ND 0.0477 0.005 1.00 Bromodichloromethane 119 70 - 130 0.06 ND 0.0477 0.005 1.00 Bromoform 128 70 - 130 0.06 ND 0.0477 0.005 1.00 Bromomethane 114 70 - 130 0.05 ND 0.0477 0.005 1.00 Carbon Disulfide 97.5 70 - 130 0.05 ND 0.0477 0.005 1.00 Carbon Tetrachloride 108 70 - 130 0.05 ND 0.0477 0.005 1.00 Chlorobenzene 106 70 - 130 0.05 ND 0.0477 0.005 1.00 Chloroethane 115 70 - 130 0.05 ND 0.0477 0.005 1.00 Chloroform 121 70 - 130 0.06 ND 0.0477 0.005 1.00 CtF WO#: 22I1431 www.ChemtechFord.com Page 33 of 43 QC Report for Work Order (WO) - 22I1431 % Rec RPD RPD Max MRL DFResultSpk ValueLimitsSource ConcAnalyte Matrix Spike - EPA 8260D /5030A (cont.) QC Sample ID: BWI1119-MS1 QC Source Sample: XXXXXXX-XXBatch: BWI1119 Date Prepared: 09/21/2022 Date Analyzed: 09/21/2022 Chloromethane 109 70 - 130 0.05 ND 0.0477 0.005 1.00 cis-1,2-Dichloroethene 115 70 - 130 0.06 ND 0.0477 0.005 1.00 cis-1,3-Dichloropropene 117 70 - 130 0.06 ND 0.0477 0.005 1.00 Cyclohexanone 123 70 - 130 1.17 ND 0.954 0.09 1.00 Dibromochloromethane 123 70 - 130 0.06 ND 0.0477 0.005 1.00 Dibromomethane 121 70 - 130 0.06 ND 0.0477 0.005 1.00 Dichlorodifluoromethane 113 70 - 130 0.05 ND 0.0477 0.005 1.00 Ethyl Acetate 137 70 - 130 0.65 ND 0.477 0.05 1.00 MS-High - Estimated high due to Matrix Spike recovery. Ethyl Ether 103 70 - 130 0.05 ND 0.0477 0.005 1.00 Ethylbenzene 103 70 - 130 0.05 ND 0.0477 0.005 1.00 Hexachlorobutadiene 76.7 70 - 130 0.04 ND 0.0477 0.005 1.00 Hexane 70 - 130 ND ND 0.0477 0.005 1.00 Isobutanol 153 70 - 130 1.46 ND 0.954 0.09 1.00 MS-High - Estimated high due to Matrix Spike recovery. Isopropylbenzene 97.8 70 - 130 0.05 ND 0.0477 0.005 1.00 Methyl Ethyl Ketone 131 70 - 130 0.63 ND 0.477 0.05 1.00 MS-High - Estimated high due to Matrix Spike recovery. Methyl Isobutyl Ketone 148 70 - 130 0.71 ND 0.477 0.05 1.00 MS-High - Estimated high due to Matrix Spike recovery. Methylene Chloride 128 70 - 130 0.06 ND 0.0477 0.09 1.00 J - Detected but below the Reporting Limit; therefore, result is an estimated concentration (CLP J-Flag). Methyl-tert-butyl ether (MTBE)107 70 - 130 0.09 0.04 0.0477 0.005 1.00 Naphthalene 98.0 70 - 130 0.05 ND 0.0477 0.005 1.00 n-Butyl Alcohol 146 70 - 130 1.39 ND 0.954 0.09 1.00 MS-High - Estimated high due to Matrix Spike recovery. n-Butylbenzene 91.5 70 - 130 0.04 ND 0.0477 0.005 1.00 Nitrobenzene 112 70 - 130 1.07 ND 0.954 0.09 1.00 n-Propyl Benzene 100 70 - 130 0.05 ND 0.0477 0.005 1.00 p-Isopropyltoluene 96.6 70 - 130 0.05 ND 0.0477 0.005 1.00 sec-Butyl Benzene 96.2 70 - 130 0.05 ND 0.0477 0.005 1.00 Styrene 112 70 - 130 0.05 ND 0.0477 0.005 1.00 tert-Butylbenzene 96.5 70 - 130 0.05 ND 0.0477 0.005 1.00 Tetrachloroethene 98.7 70 - 130 0.05 ND 0.0477 0.005 1.00 Toluene 104 70 - 130 0.05 ND 0.0477 0.005 1.00 trans-1,2-Dichloroethene 114 70 - 130 0.05 ND 0.0477 0.005 1.00 trans-1,3-Dichloropropene 125 70 - 130 0.06 ND 0.0477 0.005 1.00 Trichloroethene 106 70 - 130 0.05 ND 0.0477 0.005 1.00 Trichlorofluoromethane 101 70 - 130 0.05 ND 0.0477 0.005 1.00 Vinyl Chloride 122 70 - 130 0.06 ND 0.0477 0.005 1.00 Xylenes, total 108 70 - 130 0.16 ND 0.143 0.005 1.00 QC Sample ID: BWI1163-MS1 QC Source Sample: XXXXXXX-XXBatch: BWI1163 Date Prepared: 09/22/2022 Date Analyzed: 09/22/2022 1,1,1,2-Tetrachloroethane 84.1 70 - 130 0.05 ND 0.0610 0.006 1.00 1,1,1-Trichloroethane 52.0 70 - 130 0.03 ND 0.0610 0.006 1.00 MS-Low - Estimated low due to Matrix Spike recovery. 1,1,2,2-Tetrachloroethane 84.5 70 - 130 0.05 ND 0.0610 0.006 1.00 1,1,2-Trichloroethane 93.4 70 - 130 0.06 ND 0.0610 0.006 1.00 1,1,2-Trichlorotrifluoroethane 36.4 70 - 130 0.02 ND 0.0610 0.006 1.00 MS-Low - Estimated low due to Matrix Spike recovery. CtF WO#: 22I1431 www.ChemtechFord.com Page 34 of 43 QC Report for Work Order (WO) - 22I1431 % Rec RPD RPD Max MRL DFResultSpk ValueLimitsSource ConcAnalyte Matrix Spike - EPA 8260D /5030A (cont.) QC Sample ID: BWI1163-MS1 QC Source Sample: XXXXXXX-XXBatch: BWI1163 Date Prepared: 09/22/2022 Date Analyzed: 09/22/2022 1,1-Dichloroethane 56.9 70 - 130 0.03 ND 0.0610 0.006 1.00 MS-Low - Estimated low due to Matrix Spike recovery. 1,1-Dichloroethene 45.6 70 - 130 0.03 ND 0.0610 0.006 1.00 MS-Low - Estimated low due to Matrix Spike recovery. 1,1-Dichloropropene 46.1 70 - 130 0.03 ND 0.0610 0.006 1.00 MS-Low - Estimated low due to Matrix Spike recovery. 1,2,3-Trichlorobenzene 73.6 70 - 130 0.04 ND 0.0610 0.006 1.00 1,2,3-Trichloropropane 96.5 70 - 130 0.06 ND 0.0610 0.006 1.00 1,2,4-Trichlorobenzene 69.4 70 - 130 0.04 ND 0.0610 0.006 1.00 1,2,4-Trimethylbenzene 64.0 70 - 130 0.04 ND 0.0610 0.006 1.00 MS-Low - Estimated low due to Matrix Spike recovery. 1,2-Dibromo-3-chloropropane 95.8 70 - 130 0.06 ND 0.0610 0.006 1.00 1,2-Dibromoethane (EDB)98.3 70 - 130 0.06 ND 0.0610 0.006 1.00 1,2-Dichlorobenzene 77.3 70 - 130 0.05 ND 0.0610 0.006 1.00 1,2-Dichloroethane 87.2 70 - 130 0.05 ND 0.0610 0.006 1.00 1,2-Dichloropropane 71.6 70 - 130 0.04 ND 0.0610 0.006 1.00 1,3,5-Trimethylbenzene 61.6 70 - 130 0.04 ND 0.0610 0.006 1.00 MS-Low - Estimated low due to Matrix Spike recovery. 1,3-Dichlorobenzene 70.9 70 - 130 0.04 ND 0.0610 0.006 1.00 1,3-Dichloropropane 83.7 70 - 130 0.05 ND 0.0610 0.006 1.00 1,4-Dichlorobenzene 75.6 70 - 130 0.05 ND 0.0610 0.006 1.00 2,2-Dichloropropane 56.8 70 - 130 0.03 ND 0.0610 0.006 1.00 MS-Low - Estimated low due to Matrix Spike recovery. 2-Chlorotoluene 64.3 70 - 130 0.04 ND 0.0610 0.006 1.00 MS-Low - Estimated low due to Matrix Spike recovery. 2-Nitropropane 78.2 70 - 130 0.17 ND 0.214 0.06 1.00 J-LOW - Estimated low due to low recovery of LCS or CCV 4-Chlorotoluene 65.9 70 - 130 0.04 ND 0.0610 0.006 1.00 MS-Low - Estimated low due to Matrix Spike recovery. Acetone 107 70 - 130 0.80 0.14 0.610 0.06 1.00 Benzene 65.4 70 - 130 0.04 ND 0.0610 0.002 1.00 MS-Low - Estimated low due to Matrix Spike recovery. Bromobenzene 76.6 70 - 130 0.05 ND 0.0610 0.006 1.00 Bromochloromethane 84.4 70 - 130 0.05 ND 0.0610 0.006 1.00 Bromodichloromethane 80.9 70 - 130 0.05 ND 0.0610 0.006 1.00 Bromoform 110 70 - 130 0.07 ND 0.0610 0.006 1.00 Bromomethane 51.3 70 - 130 0.03 ND 0.0610 0.006 1.00 MS-Low - Estimated low due to Matrix Spike recovery. Carbon Disulfide 56.9 70 - 130 0.03 ND 0.0610 0.006 1.00 MS-Low - Estimated low due to Matrix Spike recovery. Carbon Tetrachloride 53.5 70 - 130 0.03 ND 0.0610 0.006 1.00 MS-Low - Estimated low due to Matrix Spike recovery. Chlorobenzene 72.9 70 - 130 0.04 ND 0.0610 0.006 1.00 Chloroethane 50.2 70 - 130 0.03 ND 0.0610 0.006 1.00 MS-Low - Estimated low due to Matrix Spike recovery. Chloroform 66.5 70 - 130 0.04 ND 0.0610 0.006 1.00 MS-Low - Estimated low due to Matrix Spike recovery. Chloromethane 58.8 70 - 130 0.04 ND 0.0610 0.006 1.00 MS-Low - Estimated low due to Matrix Spike recovery. cis-1,2-Dichloroethene 65.2 70 - 130 0.04 ND 0.0610 0.006 1.00 MS-Low - Estimated low due to Matrix Spike recovery. CtF WO#: 22I1431 www.ChemtechFord.com Page 35 of 43 QC Report for Work Order (WO) - 22I1431 % Rec RPD RPD Max MRL DFResultSpk ValueLimitsSource ConcAnalyte Matrix Spike - EPA 8260D /5030A (cont.) QC Sample ID: BWI1163-MS1 QC Source Sample: XXXXXXX-XXBatch: BWI1163 Date Prepared: 09/22/2022 Date Analyzed: 09/22/2022 cis-1,3-Dichloropropene 79.1 70 - 130 0.05 ND 0.0610 0.006 1.00 Cyclohexanone 101 70 - 130 1.23 ND 1.22 0.12 1.00 Dibromochloromethane 95.2 70 - 130 0.06 ND 0.0610 0.006 1.00 Dibromomethane 102 70 - 130 0.06 ND 0.0610 0.006 1.00 Dichlorodifluoromethane 33.9 70 - 130 0.02 ND 0.0610 0.006 1.00 MS-Low - Estimated low due to Matrix Spike recovery. Ethyl Acetate 96.5 70 - 130 0.59 ND 0.610 0.06 1.00 Ethyl Ether 76.2 70 - 130 0.05 ND 0.0610 0.006 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. Ethylbenzene 63.4 70 - 130 0.04 ND 0.0610 0.006 1.00 MS-Low - Estimated low due to Matrix Spike recovery. Hexachlorobutadiene 40.2 70 - 130 0.02 ND 0.0610 0.006 1.00 MS-Low - Estimated low due to Matrix Spike recovery. Hexane 70 - 130 ND ND 0.0610 0.006 1.00 Isobutanol 105 70 - 130 1.28 ND 1.22 0.12 1.00 Isopropylbenzene 53.6 70 - 130 0.03 ND 0.0610 0.006 1.00 MS-Low - Estimated low due to Matrix Spike recovery. Methyl Ethyl Ketone 105 70 - 130 0.64 ND 0.610 0.06 1.00 Methyl Isobutyl Ketone 128 70 - 130 0.78 ND 0.610 0.06 1.00 Methylene Chloride 73.3 70 - 130 0.04 ND 0.0610 0.12 1.00 J - Detected but below the Reporting Limit; therefore, result is an estimated concentration (CLP J-Flag). Methyl-tert-butyl ether (MTBE)19.0 70 - 130 0.10 0.09 0.0610 0.006 1.00 MS-Low - Estimated low due to Matrix Spike recovery. Naphthalene 71.5 70 - 130 0.04 ND 0.0610 0.006 1.00 n-Butyl Alcohol 112 70 - 130 1.36 ND 1.22 0.12 1.00 n-Butylbenzene 49.6 70 - 130 0.03 ND 0.0610 0.006 1.00 MS-Low - Estimated low due to Matrix Spike recovery. Nitrobenzene 97.2 70 - 130 1.19 ND 1.22 0.12 1.00 n-Propyl Benzene 54.4 70 - 130 0.03 ND 0.0610 0.006 1.00 MS-Low - Estimated low due to Matrix Spike recovery. p-Isopropyltoluene 54.2 70 - 130 0.03 ND 0.0610 0.006 1.00 MS-Low - Estimated low due to Matrix Spike recovery. sec-Butyl Benzene 50.3 70 - 130 0.03 ND 0.0610 0.006 1.00 MS-Low - Estimated low due to Matrix Spike recovery. Styrene 75.3 70 - 130 0.05 ND 0.0610 0.006 1.00 tert-Butylbenzene 52.4 70 - 130 0.03 ND 0.0610 0.006 1.00 MS-Low - Estimated low due to Matrix Spike recovery. Tetrachloroethene 57.5 70 - 130 0.04 ND 0.0610 0.006 1.00 MS-Low - Estimated low due to Matrix Spike recovery. Toluene 64.8 70 - 130 0.04 ND 0.0610 0.006 1.00 MS-Low - Estimated low due to Matrix Spike recovery. trans-1,2-Dichloroethene 53.0 70 - 130 0.03 ND 0.0610 0.006 1.00 MS-Low - Estimated low due to Matrix Spike recovery. trans-1,3-Dichloropropene 87.6 70 - 130 0.05 ND 0.0610 0.006 1.00 Trichloroethene 64.9 70 - 130 0.04 ND 0.0610 0.006 1.00 MS-Low - Estimated low due to Matrix Spike recovery. Trichlorofluoromethane 37.8 70 - 130 0.02 ND 0.0610 0.006 1.00 Vinyl Chloride 52.4 70 - 130 0.03 ND 0.0610 0.006 1.00 MS-Low - Estimated low due to Matrix Spike recovery. Xylenes, total 69.9 70 - 130 0.13 ND 0.183 0.006 1.00 CtF WO#: 22I1431 www.ChemtechFord.com Page 36 of 43 QC Report for Work Order (WO) - 22I1431 % Rec RPD RPD Max MRL DFResultSpk ValueLimitsSource ConcAnalyte Matrix Spike - EPA 8260D /5030A (cont.) QC Sample ID: BWI1163-MS1 QC Source Sample: XXXXXXX-XXBatch: BWI1163 Date Prepared: 09/22/2022 Date Analyzed: 09/22/2022 MS-Low - Estimated low due to Matrix Spike recovery. Matrix Spike Dup - EPA 8260D /5030A QC Sample ID: BWI1119-MSD1 QC Source Sample: XXXXXXX-XXBatch: BWI1119 Date Prepared: 09/21/2022 Date Analyzed: 09/21/2022 1,1,1,2-Tetrachloroethane 112 1.51 70 - 130 20 0.06 ND 0.0498 0.005 1.00 1,1,1-Trichloroethane 109 3.61 70 - 130 20 0.05 ND 0.0498 0.005 1.00 1,1,2,2-Tetrachloroethane 116 1.95 70 - 130 20 0.06 ND 0.0498 0.005 1.00 1,1,2-Trichloroethane 127 0.550 70 - 130 20 0.06 ND 0.0498 0.005 1.00 1,1,2-Trichlorotrifluoroethane 83.3 5.60 70 - 130 20 0.04 ND 0.0498 0.005 1.00 1,1-Dichloroethane 120 2.78 70 - 130 20 0.06 ND 0.0498 0.005 1.00 1,1-Dichloroethene 102 2.23 70 - 130 20 0.05 ND 0.0498 0.005 1.00 1,1-Dichloropropene 98.6 1.81 70 - 130 20 0.05 ND 0.0498 0.005 1.00 1,2,3-Trichlorobenzene 99.9 0.401 70 - 130 20 0.05 ND 0.0498 0.005 1.00 1,2,3-Trichloropropane 134 0.750 70 - 130 20 0.07 ND 0.0498 0.005 1.00 MS-High - Estimated high due to Matrix Spike recovery. 1,2,4-Trichlorobenzene 95.9 0.104 70 - 130 20 0.05 ND 0.0498 0.005 1.00 1,2,4-Trimethylbenzene 104 0.0961 70 - 130 20 0.05 ND 0.0498 0.005 1.00 1,2-Dibromo-3-chloropropane 136 6.93 70 - 130 20 0.07 ND 0.0498 0.005 1.00 MS-High - Estimated high due to Matrix Spike recovery. 1,2-Dibromoethane (EDB)128 1.56 70 - 130 20 0.06 ND 0.0498 0.005 1.00 1,2-Dichlorobenzene 106 0.658 70 - 130 20 0.05 ND 0.0498 0.005 1.00 1,2-Dichloroethane 126 1.44 70 - 130 20 0.06 ND 0.0498 0.005 1.00 1,2-Dichloropropane 118 0.340 70 - 130 20 0.06 ND 0.0498 0.005 1.00 1,3,5-Trimethylbenzene 99.7 2.18 70 - 130 20 0.05 ND 0.0498 0.005 1.00 1,3-Dichlorobenzene 103 1.16 70 - 130 20 0.05 ND 0.0498 0.005 1.00 1,3-Dichloropropane 123 3.76 70 - 130 20 0.06 ND 0.0498 0.005 1.00 1,4-Dichlorobenzene 102 1.07 70 - 130 20 0.05 ND 0.0498 0.005 1.00 2,2-Dichloropropane 117 5.73 70 - 130 20 0.06 ND 0.0498 0.005 1.00 2-Chlorotoluene 101 0.693 70 - 130 20 0.05 ND 0.0498 0.005 1.00 2-Nitropropane 96.6 3.06 70 - 130 20 0.17 ND 0.174 0.05 1.00 4-Chlorotoluene 103 0.775 70 - 130 20 0.05 ND 0.0498 0.005 1.00 Acetone 126 37.0 70 - 130 20 0.63 ND 0.498 0.05 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. Benzene 108 1.01 70 - 130 20 0.05 ND 0.0498 0.002 1.00 Bromobenzene 104 1.53 70 - 130 20 0.05 ND 0.0498 0.005 1.00 Bromochloromethane 126 1.65 70 - 130 20 0.06 ND 0.0498 0.005 1.00 Bromodichloromethane 121 1.50 70 - 130 20 0.06 ND 0.0498 0.005 1.00 Bromoform 128 0.469 70 - 130 20 0.06 ND 0.0498 0.005 1.00 Bromomethane 115 0.959 70 - 130 20 0.06 ND 0.0498 0.005 1.00 Carbon Disulfide 97.1 0.411 70 - 130 20 0.05 ND 0.0498 0.005 1.00 Carbon Tetrachloride 104 2.93 70 - 130 20 0.05 ND 0.0498 0.005 1.00 Chlorobenzene 105 1.24 70 - 130 20 0.05 ND 0.0498 0.005 1.00 Chloroethane 118 2.41 70 - 130 20 0.06 ND 0.0498 0.005 1.00 Chloroform 117 2.94 70 - 130 20 0.06 ND 0.0498 0.005 1.00 Chloromethane 107 1.30 70 - 130 20 0.05 ND 0.0498 0.005 1.00 cis-1,2-Dichloroethene 115 0.696 70 - 130 20 0.06 ND 0.0498 0.005 1.00 cis-1,3-Dichloropropene 119 1.10 70 - 130 20 0.06 ND 0.0498 0.005 1.00 Cyclohexanone 130 5.75 70 - 130 20 1.29 ND 0.997 0.10 1.00 Dibromochloromethane 123 0.325 70 - 130 20 0.06 ND 0.0498 0.005 1.00 Dibromomethane 119 1.25 70 - 130 20 0.06 ND 0.0498 0.005 1.00 CtF WO#: 22I1431 www.ChemtechFord.com Page 37 of 43 QC Report for Work Order (WO) - 22I1431 % Rec RPD RPD Max MRL DFResultSpk ValueLimitsSource ConcAnalyte Matrix Spike Dup - EPA 8260D /5030A (cont.) QC Sample ID: BWI1119-MSD1 QC Source Sample: XXXXXXX-XXBatch: BWI1119 Date Prepared: 09/21/2022 Date Analyzed: 09/21/2022 Dichlorodifluoromethane 109 3.68 70 - 130 20 0.05 ND 0.0498 0.005 1.00 Ethyl Acetate 135 1.97 70 - 130 20 0.67 ND 0.498 0.05 1.00 MS-High - Estimated high due to Matrix Spike recovery. Ethyl Ether 110 6.94 70 - 130 20 0.05 ND 0.0498 0.005 1.00 Ethylbenzene 101 1.67 70 - 130 20 0.05 ND 0.0498 0.005 1.00 Hexachlorobutadiene 74.8 2.51 70 - 130 20 0.04 ND 0.0498 0.005 1.00 Hexane 70 - 130 20 ND ND 0.0498 0.005 1.00 Isobutanol 158 2.76 70 - 130 20 1.57 ND 0.997 0.10 1.00 MS-High - Estimated high due to Matrix Spike recovery. Isopropylbenzene 96.1 1.75 70 - 130 20 0.05 ND 0.0498 0.005 1.00 Methyl Ethyl Ketone 129 1.64 70 - 130 20 0.64 ND 0.498 0.05 1.00 Methyl Isobutyl Ketone 150 1.44 70 - 130 20 0.75 ND 0.498 0.05 1.00 MS-High - Estimated high due to Matrix Spike recovery. Methylene Chloride 127 0.393 70 - 130 20 0.06 ND 0.0498 0.10 1.00 J - Detected but below the Reporting Limit; therefore, result is an estimated concentration (CLP J-Flag). Methyl-tert-butyl ether (MTBE)112 5.08 70 - 130 20 0.10 0.04 0.0498 0.005 1.00 Naphthalene 103 5.17 70 - 130 20 0.05 ND 0.0498 0.005 1.00 n-Butyl Alcohol 156 6.52 70 - 130 20 1.56 ND 0.997 0.10 1.00 MS-High - Estimated high due to Matrix Spike recovery. n-Butylbenzene 88.9 2.88 70 - 130 20 0.04 ND 0.0498 0.005 1.00 Nitrobenzene 123 8.98 70 - 130 20 1.22 ND 0.997 0.10 1.00 n-Propyl Benzene 97.7 2.83 70 - 130 20 0.05 ND 0.0498 0.005 1.00 p-Isopropyltoluene 96.7 0.103 70 - 130 20 0.05 ND 0.0498 0.005 1.00 sec-Butyl Benzene 94.0 2.31 70 - 130 20 0.05 ND 0.0498 0.005 1.00 Styrene 110 1.62 70 - 130 20 0.05 ND 0.0498 0.005 1.00 tert-Butylbenzene 93.8 2.84 70 - 130 20 0.05 ND 0.0498 0.005 1.00 Tetrachloroethene 93.9 4.98 70 - 130 20 0.05 ND 0.0498 0.005 1.00 Toluene 106 1.91 70 - 130 20 0.05 ND 0.0498 0.005 1.00 trans-1,2-Dichloroethene 111 2.32 70 - 130 20 0.06 ND 0.0498 0.005 1.00 trans-1,3-Dichloropropene 125 0.160 70 - 130 20 0.06 ND 0.0498 0.005 1.00 Trichloroethene 110 3.69 70 - 130 20 0.05 ND 0.0498 0.005 1.00 Trichlorofluoromethane 102 0.988 70 - 130 20 0.05 ND 0.0498 0.005 1.00 Vinyl Chloride 120 0.991 70 - 130 20 0.06 ND 0.0498 0.005 1.00 Xylenes, total 108 0.401 70 - 130 20 0.16 ND 0.150 0.005 1.00 QC Sample ID: BWI1163-MSD1 QC Source Sample: XXXXXXX-XXBatch: BWI1163 Date Prepared: 09/22/2022 Date Analyzed: 09/22/2022 1,1,1,2-Tetrachloroethane 81.9 2.65 70 - 130 20 0.05 ND 0.0610 0.006 1.00 1,1,1-Trichloroethane 52.1 0.192 70 - 130 20 0.03 ND 0.0610 0.006 1.00 MS-Low - Estimated low due to Matrix Spike recovery. 1,1,2,2-Tetrachloroethane 81.0 4.23 70 - 130 20 0.05 ND 0.0610 0.006 1.00 1,1,2-Trichloroethane 94.4 1.06 70 - 130 20 0.06 ND 0.0610 0.006 1.00 1,1,2-Trichlorotrifluoroethane 31.9 13.2 70 - 130 20 0.02 ND 0.0610 0.006 1.00 MS-Low - Estimated low due to Matrix Spike recovery. 1,1-Dichloroethane 55.8 1.95 70 - 130 20 0.03 ND 0.0610 0.006 1.00 MS-Low - Estimated low due to Matrix Spike recovery. 1,1-Dichloroethene 33.7 30.0 70 - 130 20 0.02 ND 0.0610 0.006 1.00 MS-Low - Estimated low due to Matrix Spike recovery. 1,1-Dichloropropene 47.3 2.57 70 - 130 20 0.03 ND 0.0610 0.006 1.00 MS-Low - Estimated low due to Matrix Spike recovery. 1,2,3-Trichlorobenzene 68.9 6.60 70 - 130 20 0.04 ND 0.0610 0.006 1.00 CtF WO#: 22I1431 www.ChemtechFord.com Page 38 of 43 QC Report for Work Order (WO) - 22I1431 % Rec RPD RPD Max MRL DFResultSpk ValueLimitsSource ConcAnalyte Matrix Spike Dup - EPA 8260D /5030A (cont.) QC Sample ID: BWI1163-MSD1 QC Source Sample: XXXXXXX-XXBatch: BWI1163 Date Prepared: 09/22/2022 Date Analyzed: 09/22/2022 MS-Low - Estimated low due to Matrix Spike recovery. 1,2,3-Trichloropropane 93.2 3.48 70 - 130 20 0.06 ND 0.0610 0.006 1.00 1,2,4-Trichlorobenzene 63.1 9.51 70 - 130 20 0.04 ND 0.0610 0.006 1.00 1,2,4-Trimethylbenzene 59.0 8.13 70 - 130 20 0.04 ND 0.0610 0.006 1.00 MS-Low - Estimated low due to Matrix Spike recovery. 1,2-Dibromo-3-chloropropane 88.7 7.70 70 - 130 20 0.05 ND 0.0610 0.006 1.00 1,2-Dibromoethane (EDB)93.5 5.01 70 - 130 20 0.06 ND 0.0610 0.006 1.00 1,2-Dichlorobenzene 71.1 8.36 70 - 130 20 0.04 ND 0.0610 0.006 1.00 1,2-Dichloroethane 87.4 0.229 70 - 130 20 0.05 ND 0.0610 0.006 1.00 1,2-Dichloropropane 70.0 2.26 70 - 130 20 0.04 ND 0.0610 0.006 1.00 1,3,5-Trimethylbenzene 58.0 6.02 70 - 130 20 0.04 ND 0.0610 0.006 1.00 MS-Low - Estimated low due to Matrix Spike recovery. 1,3-Dichlorobenzene 68.1 4.03 70 - 130 20 0.04 ND 0.0610 0.006 1.00 MS-Low - Estimated low due to Matrix Spike recovery. 1,3-Dichloropropane 81.3 2.91 70 - 130 20 0.05 ND 0.0610 0.006 1.00 1,4-Dichlorobenzene 69.8 7.98 70 - 130 20 0.04 ND 0.0610 0.006 1.00 MS-Low - Estimated low due to Matrix Spike recovery. 2,2-Dichloropropane 56.4 0.707 70 - 130 20 0.03 ND 0.0610 0.006 1.00 MS-Low - Estimated low due to Matrix Spike recovery. 2-Chlorotoluene 61.9 3.80 70 - 130 20 0.04 ND 0.0610 0.006 1.00 MS-Low - Estimated low due to Matrix Spike recovery. 2-Nitropropane 75.0 4.21 70 - 130 20 0.16 ND 0.214 0.06 1.00 J-LOW - Estimated low due to low recovery of LCS or CCV 4-Chlorotoluene 62.9 4.66 70 - 130 20 0.04 ND 0.0610 0.006 1.00 MS-Low - Estimated low due to Matrix Spike recovery. Acetone 70.6 40.8 70 - 130 20 0.57 0.14 0.610 0.06 1.00 MS-Low - Estimated low due to Matrix Spike recovery. Benzene 64.7 1.08 70 - 130 20 0.04 ND 0.0610 0.002 1.00 MS-Low - Estimated low due to Matrix Spike recovery. Bromobenzene 72.7 5.22 70 - 130 20 0.04 ND 0.0610 0.006 1.00 Bromochloromethane 80.9 4.23 70 - 130 20 0.05 ND 0.0610 0.006 1.00 Bromodichloromethane 81.4 0.616 70 - 130 20 0.05 ND 0.0610 0.006 1.00 Bromoform 104 5.41 70 - 130 20 0.06 ND 0.0610 0.006 1.00 Bromomethane 71.3 32.6 70 - 130 20 0.04 ND 0.0610 0.006 1.00 Carbon Disulfide 50.8 11.3 70 - 130 20 0.03 ND 0.0610 0.006 1.00 MS-Low - Estimated low due to Matrix Spike recovery. Carbon Tetrachloride 54.9 2.58 70 - 130 20 0.03 ND 0.0610 0.006 1.00 MS-Low - Estimated low due to Matrix Spike recovery. Chlorobenzene 68.6 6.08 70 - 130 20 0.04 ND 0.0610 0.006 1.00 MS-Low - Estimated low due to Matrix Spike recovery. Chloroethane 40.6 21.1 70 - 130 20 0.02 ND 0.0610 0.006 1.00 MS-Low - Estimated low due to Matrix Spike recovery. Chloroform 64.6 2.90 70 - 130 20 0.04 ND 0.0610 0.006 1.00 MS-Low - Estimated low due to Matrix Spike recovery. Chloromethane 55.1 6.50 70 - 130 20 0.03 ND 0.0610 0.006 1.00 MS-Low - Estimated low due to Matrix Spike recovery. cis-1,2-Dichloroethene 62.4 4.39 70 - 130 20 0.04 ND 0.0610 0.006 1.00 MS-Low - Estimated low due to Matrix Spike recovery. cis-1,3-Dichloropropene 79.6 0.630 70 - 130 20 0.05 ND 0.0610 0.006 1.00 Cyclohexanone 93.1 7.82 70 - 130 20 1.14 ND 1.22 0.12 1.00 Dibromochloromethane 91.3 4.18 70 - 130 20 0.06 ND 0.0610 0.006 1.00 CtF WO#: 22I1431 www.ChemtechFord.com Page 39 of 43 QC Report for Work Order (WO) - 22I1431 % Rec RPD RPD Max MRL DFResultSpk ValueLimitsSource ConcAnalyte Matrix Spike Dup - EPA 8260D /5030A (cont.) QC Sample ID: BWI1163-MSD1 QC Source Sample: XXXXXXX-XXBatch: BWI1163 Date Prepared: 09/22/2022 Date Analyzed: 09/22/2022 Dibromomethane 102 0.00 70 - 130 20 0.06 ND 0.0610 0.006 1.00 Dichlorodifluoromethane 37.1 9.01 70 - 130 20 0.02 ND 0.0610 0.006 1.00 MS-Low - Estimated low due to Matrix Spike recovery. Ethyl Acetate 87.8 9.39 70 - 130 20 0.54 ND 0.610 0.06 1.00 Ethyl Ether 97.8 24.8 70 - 130 20 0.06 ND 0.0610 0.006 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. Ethylbenzene 60.0 5.51 70 - 130 20 0.04 ND 0.0610 0.006 1.00 MS-Low - Estimated low due to Matrix Spike recovery. Hexachlorobutadiene 36.7 9.10 70 - 130 20 0.02 ND 0.0610 0.006 1.00 MS-Low - Estimated low due to Matrix Spike recovery. Hexane 70 - 130 20 ND ND 0.0610 0.006 1.00 Isobutanol 93.3 11.9 70 - 130 20 1.14 ND 1.22 0.12 1.00 Isopropylbenzene 51.8 3.42 70 - 130 20 0.03 ND 0.0610 0.006 1.00 MS-Low - Estimated low due to Matrix Spike recovery. Methyl Ethyl Ketone 96.6 8.26 70 - 130 20 0.59 ND 0.610 0.06 1.00 Methyl Isobutyl Ketone 119 7.32 70 - 130 20 0.73 ND 0.610 0.06 1.00 Methylene Chloride 68.0 7.50 70 - 130 20 0.04 ND 0.0610 0.12 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. Methyl-tert-butyl ether (MTBE)14.0 30.4 70 - 130 20 0.10 0.09 0.0610 0.006 1.00 MS-Low - Estimated low due to Matrix Spike recovery. Naphthalene 67.3 6.05 70 - 130 20 0.04 ND 0.0610 0.006 1.00 MS-Low - Estimated low due to Matrix Spike recovery. n-Butyl Alcohol 100 10.8 70 - 130 20 1.22 ND 1.22 0.12 1.00 n-Butylbenzene 44.3 11.3 70 - 130 20 0.03 ND 0.0610 0.006 1.00 MS-Low - Estimated low due to Matrix Spike recovery. Nitrobenzene 95.5 1.72 70 - 130 20 1.17 ND 1.22 0.12 1.00 n-Propyl Benzene 51.9 4.70 70 - 130 20 0.03 ND 0.0610 0.006 1.00 MS-Low - Estimated low due to Matrix Spike recovery. p-Isopropyltoluene 49.3 9.47 70 - 130 20 0.03 ND 0.0610 0.006 1.00 MS-Low - Estimated low due to Matrix Spike recovery. sec-Butyl Benzene 45.7 9.58 70 - 130 20 0.03 ND 0.0610 0.006 1.00 MS-Low - Estimated low due to Matrix Spike recovery. Styrene 70.5 6.58 70 - 130 20 0.04 ND 0.0610 0.006 1.00 tert-Butylbenzene 51.2 2.32 70 - 130 20 0.03 ND 0.0610 0.006 1.00 MS-Low - Estimated low due to Matrix Spike recovery. Tetrachloroethene 57.1 0.698 70 - 130 20 0.03 ND 0.0610 0.006 1.00 MS-Low - Estimated low due to Matrix Spike recovery. Toluene 64.5 0.464 70 - 130 20 0.04 ND 0.0610 0.006 1.00 MS-Low - Estimated low due to Matrix Spike recovery. trans-1,2-Dichloroethene 53.7 1.31 70 - 130 20 0.03 ND 0.0610 0.006 1.00 MS-Low - Estimated low due to Matrix Spike recovery. trans-1,3-Dichloropropene 86.6 1.15 70 - 130 20 0.05 ND 0.0610 0.006 1.00 Trichloroethene 68.4 5.25 70 - 130 20 0.04 ND 0.0610 0.006 1.00 MS-Low - Estimated low due to Matrix Spike recovery. Trichlorofluoromethane 34.5 9.13 70 - 130 20 0.02 ND 0.0610 0.006 1.00 Vinyl Chloride 54.7 4.30 70 - 130 20 0.03 ND 0.0610 0.006 1.00 MS-Low - Estimated low due to Matrix Spike recovery. Xylenes, total 65.4 6.66 70 - 130 20 0.12 ND 0.183 0.006 1.00 MS-Low - Estimated low due to Matrix Spike recovery. CtF WO#: 22I1431 www.ChemtechFord.com Page 40 of 43 Surrogates Report for Work Order (WO) - 22I1431 Spk ValueResultUCL DF BatchLCL% RecAnalyteQC ID Blank - EPA 8015C/3550B BWI0971-BLK1 Bromofluorobenzene 97.7 50 BWI0971 1.00150 195 200 BWI1028-BLK1 Bromofluorobenzene 97.3 50 BWI1028 1.00150 195 200 BWI1030-BLK1 Bromofluorobenzene 97.2 50 BWI1030 1.00150 194 200 LCS - EPA 8015C/3550B BWI0971-BS1 Bromofluorobenzene 99.5 50 BWI0971 1.00150 199 200 BWI1028-BS1 Bromofluorobenzene 99.0 50 BWI1028 1.00150 198 200 BWI1030-BS1 Bromofluorobenzene 99.3 50 BWI1030 1.00150 199 200 Matrix Spike - EPA 8015C/3550B BWI0971-MS1 Bromofluorobenzene 90.9 50 BWI0971 1.00150 233 256 BWI1028-MS1 Bromofluorobenzene 98.1 50 BWI1028 1.00150 245 250 BWI1030-MS1 Bromofluorobenzene 93.0 50 BWI1030 1.00150 264 284 Matrix Spike Dup - EPA 8015C/3550B BWI0971-MSD1 Bromofluorobenzene 94.7 50 BWI0971 1.00150 242 256 BWI1028-MSD1 Bromofluorobenzene 97.4 50 BWI1028 1.00150 243 250 BWI1030-MSD1 Bromofluorobenzene 96.6 50 BWI1030 1.00150 275 284 Blank - EPA 8260D /5030A BWI1119-BLK1 1,2-Dichloroethane-d4 123 78.4 BWI1119 1.001230.0123 0.0100 BWI1119-BLK1 4-Bromofluorobenzene 102 65.6 BWI1119 1.001340.0102 0.0100 BWI1119-BLK1 Toluene-d8 100 82.2 BWI1119 1.001250.0100 0.0100 BWI1163-BLK1 1,2-Dichloroethane-d4 104 78.4 BWI1163 1.001230.0104 0.0100 BWI1163-BLK1 4-Bromofluorobenzene 93.6 65.6 BWI1163 1.001340.00936 0.0100 BWI1163-BLK1 Toluene-d8 100 82.2 BWI1163 1.001250.0100 0.0100 LCS - EPA 8260D /5030A BWI1119-BS1 1,2-Dichloroethane-d4 101 70 BWI1119 1.001300.0101 0.0100 BWI1119-BS1 4-Bromofluorobenzene 107 70 BWI1119 1.001300.0107 0.0100 BWI1119-BS1 Toluene-d8 100 70 BWI1119 1.001300.0100 0.0100 BWI1163-BS1 1,2-Dichloroethane-d4 96.7 70 BWI1163 1.001300.00967 0.0100 BWI1163-BS1 4-Bromofluorobenzene 106 70 BWI1163 1.001300.0106 0.0100 BWI1163-BS1 Toluene-d8 100 70 BWI1163 1.001300.0100 0.0100 Matrix Spike - EPA 8260D /5030A BWI1119-MS1 1,2-Dichloroethane-d4 117 78.4 BWI1119 1.001230.0560 0.0477 BWI1119-MS1 4-Bromofluorobenzene 103 65.6 BWI1119 1.001340.0491 0.0477 BWI1119-MS1 Toluene-d8 100 82.2 BWI1119 1.001250.0477 0.0477 BWI1163-MS1 1,2-Dichloroethane-d4 108 78.4 BWI1163 1.001230.0658 0.0610 BWI1163-MS1 4-Bromofluorobenzene 94.2 65.6 BWI1163 1.001340.0575 0.0610 BWI1163-MS1 Toluene-d8 100 82.2 BWI1163 1.001250.0610 0.0610 Matrix Spike Dup - EPA 8260D /5030A BWI1119-MSD1 1,2-Dichloroethane-d4 118 78.4 BWI1119 1.001230.0589 0.0498 BWI1119-MSD1 4-Bromofluorobenzene 102 65.6 BWI1119 1.001340.0510 0.0498 BWI1119-MSD1 Toluene-d8 100 82.2 BWI1119 1.001250.0498 0.0498 BWI1163-MSD1 1,2-Dichloroethane-d4 112 78.4 BWI1163 1.001230.0685 0.0610 BWI1163-MSD1 4-Bromofluorobenzene 96.4 65.6 BWI1163 1.001340.0588 0.0610 BWI1163-MSD1 Toluene-d8 100 82.2 BWI1163 1.001250.0610 0.0610 CtF WO#: 22I1431 www.ChemtechFord.com Page 41 of 43 UCLLCL%RecResultAnalyteLabNumber Surrogate Recoveries (Field Samples) SpkLvl Qualifier 8260 Low Level Volatiles 22I1431-01 4-Bromofluorobenzene 0.0601 99.0 65.6 1340.0607 22I1431-01 Toluene-d8 0.0607 100 82.2 1250.0607 22I1431-01 1,2-Dichloroethane-d4 0.0804 132 78.4 1230.0607 S-HB DRO 22I1431-01 Bromofluorobenzene 191 78.6 50 150243 8260 Low Level Volatiles 22I1431-02 1,2-Dichloroethane-d4 0.0801 131 78.4 1230.0612 S-HB 22I1431-02 4-Bromofluorobenzene 0.0590 96.4 65.6 1340.0612 22I1431-02 Toluene-d8 0.0607 99.2 82.2 1250.0612 DRO 22I1431-02 Bromofluorobenzene 185 72.1 50 150256 8260 Low Level Volatiles 22I1431-03 1,2-Dichloroethane-d4 0.0725 131 78.4 1230.0555 S-HB 22I1431-03 4-Bromofluorobenzene 0.0572 103 65.6 1340.0555 22I1431-03 Toluene-d8 0.0565 102 82.2 1250.0555 DRO 22I1431-03 Bromofluorobenzene 225 100 50 150225 8260 Low Level Volatiles 22I1431-04 Toluene-d8 0.0625 100 82.2 1250.0625 22I1431-04 4-Bromofluorobenzene 0.0614 98.2 65.6 1340.0625 22I1431-04 1,2-Dichloroethane-d4 0.0737 118 78.4 1230.0625 DRO 22I1431-04 Bromofluorobenzene 155 62.1 50 150250 8260 Low Level Volatiles 22I1431-05 1,2-Dichloroethane-d4 0.0732 132 78.4 1230.0555 S-HB 22I1431-05 4-Bromofluorobenzene 0.0597 108 65.6 1340.0555 22I1431-05 Toluene-d8 0.0613 110 82.2 1250.0555 DRO 22I1431-05 Bromofluorobenzene 204 89.1 50 150229 8260 Low Level Volatiles CtF WO#: 22I1431 www.ChemtechFord.com Page 42 of 43 22I1431-06 1,2-Dichloroethane-d4 0.0704 113 78.4 1230.0621 22I1431-06 4-Bromofluorobenzene 0.0611 98.4 65.6 1340.0621 22I1431-06 Toluene-d8 0.0621 100 82.2 1250.0621 DRO 22I1431-06 Bromofluorobenzene 181 71.5 50 150253 8260 Low Level Volatiles 22I1431-07 1,2-Dichloroethane-d4 0.0685 128 78.4 1230.0536 S-HB 22I1431-07 4-Bromofluorobenzene 0.0558 104 65.6 1340.0536 22I1431-07 Toluene-d8 0.0536 100 82.2 1250.0536 DRO 22I1431-07 Bromofluorobenzene 155 65.6 50 150237 CtF WO#: 22I1431 www.ChemtechFord.com Page 43 of 43 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 Engineering Attn: Michael Sauerwein 2800 South Redwood Road West Valley City, UT 84119-2375 Work Order: 22I1429 Project: 19219-3965 S. Washington Blvd, Ogden, UT 9/22/2022 Approved By: Mark Broadhead, Project Manager 9632 South 500 West Sandy, Utah 84070 Serving the Intermountain West since 1953 801.262.7299 Main 866.792.0093 Fax www.ChemtechFord.com Page 1 of 41 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 Engineering Michael Sauerwein 2800 South Redwood Road West Valley City, UT 84119-2375 PO#: Receipt: Date Reported: Project Name: 9/16/22 10:25 @ 6.1 °C 9/22/2022 19219-3965 S. Washington Blvd, Ogden, UT Sample ID: B1-W Lab ID: 22I1429-01Matrix: Water Flag(s)Units Analysis Date/Time Date Sampled: 9/15/22 10:20 Preparation Date/Time Sampled By: Michael Sauerwein Minimum Reporting Limit MethodResult Diesel Range mg/L 9/20/229/20/221.0 EPA 8015C/3510BNDDiesel Range Organics Volatile Organic Compounds ug/L 9/16/229/16/221.0 EPA 8260D /5030AND1,1,1,2-Tetrachloroethane ug/L 9/16/229/16/221.0 EPA 8260D /5030AND1,1,1-Trichloroethane ug/L 9/16/229/16/221.0 EPA 8260D /5030AND1,1,2,2-Tetrachloroethane ug/L 9/16/229/16/221.0 EPA 8260D /5030AND1,1,2-Trichloroethane ug/L 9/16/229/16/221.0 EPA 8260D /5030AND1,1,2-Trichlorotrifluoroethane ug/L 9/16/229/16/221.0 EPA 8260D /5030AND1,1-Dichloroethane ug/L 9/16/229/16/221.0 EPA 8260D /5030AND1,1-Dichloroethene ug/L 9/16/229/16/221.0 EPA 8260D /5030AND1,1-Dichloropropene ug/L 9/16/229/16/2220.0 EPA 8260D /5030AND2-Hexanone ug/L 9/16/229/16/221.0 EPA 8260D /5030AND1,2,3-Trichlorobenzene ug/L 9/16/229/16/221.0 EPA 8260D /5030AND1,2,3-Trichloropropane ug/L 9/16/229/16/221.0 EPA 8260D /5030AND1,2,4-Trichlorobenzene ug/L 9/16/229/16/221.0 EPA 8260D /5030AND1,2,4-Trimethylbenzene ug/L 9/16/229/16/221.0 EPA 8260D /5030AND1,2-Dibromo-3-chloropropane ug/L 9/16/229/16/221.0 EPA 8260D /5030AND1,2-Dibromoethane (EDB) ug/L 9/16/229/16/221.0 EPA 8260D /5030AND1,2-Dichlorobenzene ug/L 9/16/229/16/221.0 EPA 8260D /5030AND1,2-Dichloroethane ug/L 9/16/229/16/221.0 EPA 8260D /5030AND1,2-Dichloropropane ug/L 9/16/229/16/221.0 EPA 8260D /5030AND1,3,5-Trimethylbenzene ug/L 9/16/229/16/221.0 EPA 8260D /5030AND1,3-Dichlorobenzene ug/L 9/16/229/16/221.0 EPA 8260D /5030AND1,3-Dichloropropane ug/L 9/16/229/16/221.0 EPA 8260D /5030AND1,4-Dichlorobenzene ug/L 9/16/229/16/221.0 EPA 8260D /5030AND2,2-Dichloropropane ug/L 9/16/229/16/221.0 EPA 8260D /5030AND2-Chlorotoluene ug/L J-LOW9/16/229/16/2210.0 EPA 8260D /5030AND2-Nitropropane ug/L 9/16/229/16/221.0 EPA 8260D /5030AND4-Chlorotoluene ug/L 9/16/229/16/2210.0 EPA 8260D /5030ANDAcetone ug/L 9/16/229/16/2210.0 EPA 8260D /5030ANDAcrylonitrile ug/L 9/16/229/16/220.4 EPA 8260D /5030ANDBenzene ug/L 9/16/229/16/221.0 EPA 8260D /5030ANDBromobenzene ug/L 9/16/229/16/221.0 EPA 8260D /5030ANDBromochloromethane ug/L 9/16/229/16/221.0 EPA 8260D /5030ANDBromodichloromethane ug/L 9/16/229/16/221.0 EPA 8260D /5030ANDBromoform ug/L 9/16/229/16/221.0 EPA 8260D /5030ANDBromomethane ug/L 9/16/229/16/221.0 EPA 8260D /5030ANDCarbon Disulfide Project Name: 19219-3965 S. Washington Blvd, Ogden, UT CtF WO#: 22I1429 www.ChemtechFord.com Page 2 of 41Page 2 of 41 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 Engineering Michael Sauerwein 2800 South Redwood Road West Valley City, UT 84119-2375 PO#: Receipt: Date Reported: Project Name: 9/16/22 10:25 @ 6.1 °C 9/22/2022 19219-3965 S. Washington Blvd, Ogden, UT Sample ID: B1-W (cont.) Lab ID: 22I1429-01Matrix: Water Flag(s)Units Analysis Date/Time Date Sampled: 9/15/22 10:20 Preparation Date/Time Sampled By: Michael Sauerwein Minimum Reporting Limit MethodResult Volatile Organic Compounds (cont.) ug/L 9/16/229/16/221.0 EPA 8260D /5030ANDCarbon Tetrachloride ug/L 9/16/229/16/221.0 EPA 8260D /5030ANDChlorobenzene ug/L 9/16/229/16/221.0 EPA 8260D /5030ANDChloroethane ug/L 9/16/229/16/221.0 EPA 8260D /5030ANDChloroform ug/L 9/16/229/16/221.0 EPA 8260D /5030ANDChloromethane ug/L 9/16/229/16/221.0 EPA 8260D /5030ANDcis-1,2-Dichloroethene ug/L 9/16/229/16/221.0 EPA 8260D /5030ANDcis-1,3-Dichloropropene ug/L 9/16/229/16/2220.0 EPA 8260D /5030ANDCyclohexanone ug/L 9/16/229/16/221.0 EPA 8260D /5030ANDDibromochloromethane ug/L 9/16/229/16/221.0 EPA 8260D /5030ANDDibromomethane ug/L 9/16/229/16/221.0 EPA 8260D /5030ANDDichlorodifluoromethane ug/L 9/16/229/16/2210.0 EPA 8260D /5030ANDEthyl Acetate ug/L 9/16/229/16/221.0 EPA 8260D /5030ANDEthylbenzene ug/L 9/16/229/16/221.0 EPA 8260D /5030ANDEthyl Ether ug/L 9/16/229/16/221.0 EPA 8260D /5030ANDHexachlorobutadiene ug/L 9/16/229/16/2210.0 EPA 8260D /5030ANDIsobutanol ug/L 9/16/229/16/221.0 EPA 8260D /5030A1.2Isopropylbenzene ug/L 9/16/229/16/2210.0 EPA 8260D /5030ANDMethyl Ethyl Ketone ug/L 9/16/229/16/2210.0 EPA 8260D /5030ANDMethyl Isobutyl Ketone ug/L 9/16/229/16/222.0 EPA 8260D /5030ANDMethylene Chloride ug/L 9/16/229/16/221.0 EPA 8260D /5030ANDMethyl-tert-butyl ether (MTBE) ug/L 9/16/229/16/221.0 EPA 8260D /5030ANDNaphthalene ug/L J-LOW9/16/229/16/2240.0 EPA 8260D /5030ANDn-Butyl Alcohol ug/L 9/16/229/16/221.0 EPA 8260D /5030ANDn-Butylbenzene ug/L 9/16/229/16/2220.0 EPA 8260D /5030ANDNitrobenzene ug/L 9/16/229/16/221.0 EPA 8260D /5030A4.6n-Propyl Benzene ug/L 9/16/229/16/221.0 EPA 8260D /5030ANDp-Isopropyltoluene ug/L 9/16/229/16/221.0 EPA 8260D /5030A3.7sec-Butyl Benzene ug/L 9/16/229/16/221.0 EPA 8260D /5030ANDStyrene ug/L 9/16/229/16/221.0 EPA 8260D /5030ANDtert-Butylbenzene ug/L 9/16/229/16/221.0 EPA 8260D /5030ANDTetrachloroethene ug/L 9/16/229/16/221.0 EPA 8260D /5030ANDToluene ug/L 9/16/229/16/221.0 EPA 8260D /5030ANDtrans-1,2-Dichloroethene ug/L 9/16/229/16/221.0 EPA 8260D /5030ANDtrans-1,3-Dichloropropene ug/L 9/16/229/16/221.0 EPA 8260D /5030ANDTrichloroethene ug/L 9/16/229/16/221.0 EPA 8260D /5030ANDTrichlorofluoromethane ug/L 9/16/229/16/221.0 EPA 8260D /5030ANDVinyl Chloride Project Name: 19219-3965 S. Washington Blvd, Ogden, UT CtF WO#: 22I1429 www.ChemtechFord.com Page 3 of 41Page 3 of 41 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 Engineering Michael Sauerwein 2800 South Redwood Road West Valley City, UT 84119-2375 PO#: Receipt: Date Reported: Project Name: 9/16/22 10:25 @ 6.1 °C 9/22/2022 19219-3965 S. Washington Blvd, Ogden, UT Sample ID: B1-W (cont.) Lab ID: 22I1429-01Matrix: Water Flag(s)Units Analysis Date/Time Date Sampled: 9/15/22 10:20 Preparation Date/Time Sampled By: Michael Sauerwein Minimum Reporting Limit MethodResult Volatile Organic Compounds (cont.) ug/L 9/16/229/16/221.0 EPA 8260D /5030A1.1Xylenes, total ug/L 9/16/229/16/2210.0 EPA 8260D /5030A106C5-C6 Aliphatic hydrocarbons ug/L 9/16/229/16/2210.0 EPA 8260D /5030A606C7-C8 Aliphatic hydrocarbons ug/L 9/16/229/16/2210.0 EPA 8260D /5030A17.2C9-C10 Aliphatic hydrocarbons ug/L 9/16/229/16/2210.0 EPA 8260D /5030A538C9-C10 Alkyl Benzenes ug/L 9/16/229/16/2210.0 EPA 8260D /5030A1270Gasoline Range Organics Project Name: 19219-3965 S. Washington Blvd, Ogden, UT CtF WO#: 22I1429 www.ChemtechFord.com Page 4 of 41Page 4 of 41 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 Engineering Michael Sauerwein 2800 South Redwood Road West Valley City, UT 84119-2375 PO#: Receipt: Date Reported: Project Name: 9/16/22 10:25 @ 6.1 °C 9/22/2022 19219-3965 S. Washington Blvd, Ogden, UT Sample ID: B2-W Lab ID: 22I1429-02Matrix: Water Flag(s)Units Analysis Date/Time Date Sampled: 9/15/22 11:15 Preparation Date/Time Sampled By: Michael Sauerwein Minimum Reporting Limit MethodResult Diesel Range mg/L 9/20/229/20/221.0 EPA 8015C/3510BNDDiesel Range Organics Volatile Organic Compounds ug/L 9/16/229/16/221.0 EPA 8260D /5030AND1,1,1,2-Tetrachloroethane ug/L 9/16/229/16/221.0 EPA 8260D /5030AND1,1,1-Trichloroethane ug/L 9/16/229/16/221.0 EPA 8260D /5030AND1,1,2,2-Tetrachloroethane ug/L 9/16/229/16/221.0 EPA 8260D /5030AND1,1,2-Trichloroethane ug/L 9/16/229/16/221.0 EPA 8260D /5030AND1,1,2-Trichlorotrifluoroethane ug/L 9/16/229/16/221.0 EPA 8260D /5030AND1,1-Dichloroethane ug/L 9/16/229/16/221.0 EPA 8260D /5030AND1,1-Dichloroethene ug/L 9/16/229/16/221.0 EPA 8260D /5030AND1,1-Dichloropropene ug/L 9/16/229/16/2220.0 EPA 8260D /5030AND2-Hexanone ug/L 9/16/229/16/221.0 EPA 8260D /5030AND1,2,3-Trichlorobenzene ug/L 9/16/229/16/221.0 EPA 8260D /5030AND1,2,3-Trichloropropane ug/L 9/16/229/16/221.0 EPA 8260D /5030AND1,2,4-Trichlorobenzene ug/L 9/16/229/16/221.0 EPA 8260D /5030AND1,2,4-Trimethylbenzene ug/L 9/16/229/16/221.0 EPA 8260D /5030AND1,2-Dibromo-3-chloropropane ug/L 9/16/229/16/221.0 EPA 8260D /5030AND1,2-Dibromoethane (EDB) ug/L 9/16/229/16/221.0 EPA 8260D /5030AND1,2-Dichlorobenzene ug/L 9/16/229/16/221.0 EPA 8260D /5030AND1,2-Dichloroethane ug/L 9/16/229/16/221.0 EPA 8260D /5030AND1,2-Dichloropropane ug/L 9/16/229/16/221.0 EPA 8260D /5030AND1,3,5-Trimethylbenzene ug/L 9/16/229/16/221.0 EPA 8260D /5030AND1,3-Dichlorobenzene ug/L 9/16/229/16/221.0 EPA 8260D /5030AND1,3-Dichloropropane ug/L 9/16/229/16/221.0 EPA 8260D /5030AND1,4-Dichlorobenzene ug/L 9/16/229/16/221.0 EPA 8260D /5030AND2,2-Dichloropropane ug/L 9/16/229/16/221.0 EPA 8260D /5030AND2-Chlorotoluene ug/L J-LOW9/16/229/16/2210.0 EPA 8260D /5030AND2-Nitropropane ug/L 9/16/229/16/221.0 EPA 8260D /5030AND4-Chlorotoluene ug/L 9/16/229/16/2210.0 EPA 8260D /5030ANDAcetone ug/L 9/16/229/16/2210.0 EPA 8260D /5030ANDAcrylonitrile ug/L 9/16/229/16/220.4 EPA 8260D /5030ANDBenzene ug/L 9/16/229/16/221.0 EPA 8260D /5030ANDBromobenzene ug/L 9/16/229/16/221.0 EPA 8260D /5030ANDBromochloromethane ug/L 9/16/229/16/221.0 EPA 8260D /5030ANDBromodichloromethane ug/L 9/16/229/16/221.0 EPA 8260D /5030ANDBromoform ug/L 9/16/229/16/221.0 EPA 8260D /5030ANDBromomethane ug/L 9/16/229/16/221.0 EPA 8260D /5030ANDCarbon Disulfide Project Name: 19219-3965 S. Washington Blvd, Ogden, UT CtF WO#: 22I1429 www.ChemtechFord.com Page 5 of 41Page 5 of 41 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 Engineering Michael Sauerwein 2800 South Redwood Road West Valley City, UT 84119-2375 PO#: Receipt: Date Reported: Project Name: 9/16/22 10:25 @ 6.1 °C 9/22/2022 19219-3965 S. Washington Blvd, Ogden, UT Sample ID: B2-W (cont.) Lab ID: 22I1429-02Matrix: Water Flag(s)Units Analysis Date/Time Date Sampled: 9/15/22 11:15 Preparation Date/Time Sampled By: Michael Sauerwein Minimum Reporting Limit MethodResult Volatile Organic Compounds (cont.) ug/L 9/16/229/16/221.0 EPA 8260D /5030ANDCarbon Tetrachloride ug/L 9/16/229/16/221.0 EPA 8260D /5030ANDChlorobenzene ug/L 9/16/229/16/221.0 EPA 8260D /5030ANDChloroethane ug/L 9/16/229/16/221.0 EPA 8260D /5030ANDChloroform ug/L 9/16/229/16/221.0 EPA 8260D /5030ANDChloromethane ug/L 9/16/229/16/221.0 EPA 8260D /5030ANDcis-1,2-Dichloroethene ug/L 9/16/229/16/221.0 EPA 8260D /5030ANDcis-1,3-Dichloropropene ug/L 9/16/229/16/2220.0 EPA 8260D /5030ANDCyclohexanone ug/L 9/16/229/16/221.0 EPA 8260D /5030ANDDibromochloromethane ug/L 9/16/229/16/221.0 EPA 8260D /5030ANDDibromomethane ug/L 9/16/229/16/221.0 EPA 8260D /5030ANDDichlorodifluoromethane ug/L 9/16/229/16/2210.0 EPA 8260D /5030ANDEthyl Acetate ug/L 9/16/229/16/221.0 EPA 8260D /5030ANDEthylbenzene ug/L 9/16/229/16/221.0 EPA 8260D /5030ANDEthyl Ether ug/L 9/16/229/16/221.0 EPA 8260D /5030ANDHexachlorobutadiene ug/L 9/16/229/16/2210.0 EPA 8260D /5030ANDIsobutanol ug/L 9/16/229/16/221.0 EPA 8260D /5030ANDIsopropylbenzene ug/L 9/16/229/16/2210.0 EPA 8260D /5030ANDMethyl Ethyl Ketone ug/L 9/16/229/16/2210.0 EPA 8260D /5030ANDMethyl Isobutyl Ketone ug/L 9/16/229/16/222.0 EPA 8260D /5030ANDMethylene Chloride ug/L 9/16/229/16/221.0 EPA 8260D /5030ANDMethyl-tert-butyl ether (MTBE) ug/L 9/16/229/16/221.0 EPA 8260D /5030ANDNaphthalene ug/L J-LOW9/16/229/16/2240.0 EPA 8260D /5030ANDn-Butyl Alcohol ug/L 9/16/229/16/221.0 EPA 8260D /5030ANDn-Butylbenzene ug/L 9/16/229/16/2220.0 EPA 8260D /5030ANDNitrobenzene ug/L 9/16/229/16/221.0 EPA 8260D /5030ANDn-Propyl Benzene ug/L 9/16/229/16/221.0 EPA 8260D /5030ANDp-Isopropyltoluene ug/L 9/16/229/16/221.0 EPA 8260D /5030ANDsec-Butyl Benzene ug/L 9/16/229/16/221.0 EPA 8260D /5030ANDStyrene ug/L 9/16/229/16/221.0 EPA 8260D /5030ANDtert-Butylbenzene ug/L 9/16/229/16/221.0 EPA 8260D /5030ANDTetrachloroethene ug/L 9/16/229/16/221.0 EPA 8260D /5030ANDToluene ug/L 9/16/229/16/221.0 EPA 8260D /5030ANDtrans-1,2-Dichloroethene ug/L 9/16/229/16/221.0 EPA 8260D /5030ANDtrans-1,3-Dichloropropene ug/L 9/16/229/16/221.0 EPA 8260D /5030ANDTrichloroethene ug/L 9/16/229/16/221.0 EPA 8260D /5030ANDTrichlorofluoromethane ug/L 9/16/229/16/221.0 EPA 8260D /5030ANDVinyl Chloride Project Name: 19219-3965 S. Washington Blvd, Ogden, UT CtF WO#: 22I1429 www.ChemtechFord.com Page 6 of 41Page 6 of 41 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 Engineering Michael Sauerwein 2800 South Redwood Road West Valley City, UT 84119-2375 PO#: Receipt: Date Reported: Project Name: 9/16/22 10:25 @ 6.1 °C 9/22/2022 19219-3965 S. Washington Blvd, Ogden, UT Sample ID: B2-W (cont.) Lab ID: 22I1429-02Matrix: Water Flag(s)Units Analysis Date/Time Date Sampled: 9/15/22 11:15 Preparation Date/Time Sampled By: Michael Sauerwein Minimum Reporting Limit MethodResult Volatile Organic Compounds (cont.) ug/L 9/16/229/16/221.0 EPA 8260D /5030ANDXylenes, total ug/L J9/16/229/16/2210.0 EPA 8260D /5030A2.4C5-C6 Aliphatic hydrocarbons ug/L 9/16/229/16/2210.0 EPA 8260D /5030A258C7-C8 Aliphatic hydrocarbons ug/L J9/16/229/16/2210.0 EPA 8260D /5030A9.9C9-C10 Aliphatic hydrocarbons ug/L J9/16/229/16/2210.0 EPA 8260D /5030A6.1C9-C10 Alkyl Benzenes ug/L 9/16/229/16/2210.0 EPA 8260D /5030A277Gasoline Range Organics Project Name: 19219-3965 S. Washington Blvd, Ogden, UT CtF WO#: 22I1429 www.ChemtechFord.com Page 7 of 41Page 7 of 41 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 Engineering Michael Sauerwein 2800 South Redwood Road West Valley City, UT 84119-2375 PO#: Receipt: Date Reported: Project Name: 9/16/22 10:25 @ 6.1 °C 9/22/2022 19219-3965 S. Washington Blvd, Ogden, UT Sample ID: B3-W Lab ID: 22I1429-03Matrix: Water Flag(s)Units Analysis Date/Time Date Sampled: 9/15/22 12:15 Preparation Date/Time Sampled By: Michael Sauerwein Minimum Reporting Limit MethodResult Diesel Range mg/L 9/20/229/20/221.0 EPA 8015C/3510BNDDiesel Range Organics Volatile Organic Compounds ug/L 9/16/229/16/221.0 EPA 8260D /5030AND1,1,1,2-Tetrachloroethane ug/L 9/16/229/16/221.0 EPA 8260D /5030AND1,1,1-Trichloroethane ug/L 9/16/229/16/221.0 EPA 8260D /5030AND1,1,2,2-Tetrachloroethane ug/L 9/16/229/16/221.0 EPA 8260D /5030AND1,1,2-Trichloroethane ug/L 9/16/229/16/221.0 EPA 8260D /5030AND1,1,2-Trichlorotrifluoroethane ug/L 9/16/229/16/221.0 EPA 8260D /5030AND1,1-Dichloroethane ug/L 9/16/229/16/221.0 EPA 8260D /5030AND1,1-Dichloroethene ug/L 9/16/229/16/221.0 EPA 8260D /5030AND1,1-Dichloropropene ug/L 9/16/229/16/2220.0 EPA 8260D /5030AND2-Hexanone ug/L 9/16/229/16/221.0 EPA 8260D /5030AND1,2,3-Trichlorobenzene ug/L 9/16/229/16/221.0 EPA 8260D /5030AND1,2,3-Trichloropropane ug/L 9/16/229/16/221.0 EPA 8260D /5030AND1,2,4-Trichlorobenzene ug/L 9/16/229/16/221.0 EPA 8260D /5030A1.21,2,4-Trimethylbenzene ug/L 9/16/229/16/221.0 EPA 8260D /5030AND1,2-Dibromo-3-chloropropane ug/L 9/16/229/16/221.0 EPA 8260D /5030AND1,2-Dibromoethane (EDB) ug/L 9/16/229/16/221.0 EPA 8260D /5030AND1,2-Dichlorobenzene ug/L 9/16/229/16/221.0 EPA 8260D /5030AND1,2-Dichloroethane ug/L 9/16/229/16/221.0 EPA 8260D /5030AND1,2-Dichloropropane ug/L 9/16/229/16/221.0 EPA 8260D /5030AND1,3,5-Trimethylbenzene ug/L 9/16/229/16/221.0 EPA 8260D /5030AND1,3-Dichlorobenzene ug/L 9/16/229/16/221.0 EPA 8260D /5030AND1,3-Dichloropropane ug/L 9/16/229/16/221.0 EPA 8260D /5030AND1,4-Dichlorobenzene ug/L 9/16/229/16/221.0 EPA 8260D /5030AND2,2-Dichloropropane ug/L 9/16/229/16/221.0 EPA 8260D /5030AND2-Chlorotoluene ug/L J-LOW9/16/229/16/2210.0 EPA 8260D /5030AND2-Nitropropane ug/L 9/16/229/16/221.0 EPA 8260D /5030AND4-Chlorotoluene ug/L 9/16/229/16/2210.0 EPA 8260D /5030ANDAcetone ug/L 9/16/229/16/2210.0 EPA 8260D /5030ANDAcrylonitrile ug/L 9/16/229/16/220.4 EPA 8260D /5030A0.6Benzene ug/L 9/16/229/16/221.0 EPA 8260D /5030ANDBromobenzene ug/L 9/16/229/16/221.0 EPA 8260D /5030ANDBromochloromethane ug/L 9/16/229/16/221.0 EPA 8260D /5030ANDBromodichloromethane ug/L 9/16/229/16/221.0 EPA 8260D /5030ANDBromoform ug/L 9/16/229/16/221.0 EPA 8260D /5030ANDBromomethane ug/L 9/16/229/16/221.0 EPA 8260D /5030ANDCarbon Disulfide Project Name: 19219-3965 S. Washington Blvd, Ogden, UT CtF WO#: 22I1429 www.ChemtechFord.com Page 8 of 41Page 8 of 41 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 Engineering Michael Sauerwein 2800 South Redwood Road West Valley City, UT 84119-2375 PO#: Receipt: Date Reported: Project Name: 9/16/22 10:25 @ 6.1 °C 9/22/2022 19219-3965 S. Washington Blvd, Ogden, UT Sample ID: B3-W (cont.) Lab ID: 22I1429-03Matrix: Water Flag(s)Units Analysis Date/Time Date Sampled: 9/15/22 12:15 Preparation Date/Time Sampled By: Michael Sauerwein Minimum Reporting Limit MethodResult Volatile Organic Compounds (cont.) ug/L 9/16/229/16/221.0 EPA 8260D /5030ANDCarbon Tetrachloride ug/L 9/16/229/16/221.0 EPA 8260D /5030ANDChlorobenzene ug/L 9/16/229/16/221.0 EPA 8260D /5030ANDChloroethane ug/L 9/16/229/16/221.0 EPA 8260D /5030ANDChloroform ug/L 9/16/229/16/221.0 EPA 8260D /5030ANDChloromethane ug/L 9/16/229/16/221.0 EPA 8260D /5030ANDcis-1,2-Dichloroethene ug/L 9/16/229/16/221.0 EPA 8260D /5030ANDcis-1,3-Dichloropropene ug/L 9/16/229/16/2220.0 EPA 8260D /5030ANDCyclohexanone ug/L 9/16/229/16/221.0 EPA 8260D /5030ANDDibromochloromethane ug/L 9/16/229/16/221.0 EPA 8260D /5030ANDDibromomethane ug/L 9/16/229/16/221.0 EPA 8260D /5030ANDDichlorodifluoromethane ug/L 9/16/229/16/2210.0 EPA 8260D /5030ANDEthyl Acetate ug/L 9/16/229/16/221.0 EPA 8260D /5030A1.4Ethylbenzene ug/L 9/16/229/16/221.0 EPA 8260D /5030ANDEthyl Ether ug/L 9/16/229/16/221.0 EPA 8260D /5030ANDHexachlorobutadiene ug/L 9/16/229/16/2210.0 EPA 8260D /5030ANDIsobutanol ug/L 9/16/229/16/221.0 EPA 8260D /5030ANDIsopropylbenzene ug/L 9/16/229/16/2210.0 EPA 8260D /5030ANDMethyl Ethyl Ketone ug/L 9/16/229/16/2210.0 EPA 8260D /5030ANDMethyl Isobutyl Ketone ug/L 9/16/229/16/222.0 EPA 8260D /5030ANDMethylene Chloride ug/L 9/16/229/16/221.0 EPA 8260D /5030ANDMethyl-tert-butyl ether (MTBE) ug/L 9/16/229/16/221.0 EPA 8260D /5030ANDNaphthalene ug/L J-LOW9/16/229/16/2240.0 EPA 8260D /5030ANDn-Butyl Alcohol ug/L 9/16/229/16/221.0 EPA 8260D /5030ANDn-Butylbenzene ug/L 9/16/229/16/2220.0 EPA 8260D /5030ANDNitrobenzene ug/L 9/16/229/16/221.0 EPA 8260D /5030ANDn-Propyl Benzene ug/L 9/16/229/16/221.0 EPA 8260D /5030ANDp-Isopropyltoluene ug/L 9/16/229/16/221.0 EPA 8260D /5030ANDsec-Butyl Benzene ug/L 9/16/229/16/221.0 EPA 8260D /5030ANDStyrene ug/L 9/16/229/16/221.0 EPA 8260D /5030ANDtert-Butylbenzene ug/L 9/16/229/16/221.0 EPA 8260D /5030ANDTetrachloroethene ug/L 9/16/229/16/221.0 EPA 8260D /5030A6.7Toluene ug/L 9/16/229/16/221.0 EPA 8260D /5030ANDtrans-1,2-Dichloroethene ug/L 9/16/229/16/221.0 EPA 8260D /5030ANDtrans-1,3-Dichloropropene ug/L 9/16/229/16/221.0 EPA 8260D /5030ANDTrichloroethene ug/L 9/16/229/16/221.0 EPA 8260D /5030ANDTrichlorofluoromethane ug/L 9/16/229/16/221.0 EPA 8260D /5030ANDVinyl Chloride Project Name: 19219-3965 S. Washington Blvd, Ogden, UT CtF WO#: 22I1429 www.ChemtechFord.com Page 9 of 41Page 9 of 41 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 Engineering Michael Sauerwein 2800 South Redwood Road West Valley City, UT 84119-2375 PO#: Receipt: Date Reported: Project Name: 9/16/22 10:25 @ 6.1 °C 9/22/2022 19219-3965 S. Washington Blvd, Ogden, UT Sample ID: B3-W (cont.) Lab ID: 22I1429-03Matrix: Water Flag(s)Units Analysis Date/Time Date Sampled: 9/15/22 12:15 Preparation Date/Time Sampled By: Michael Sauerwein Minimum Reporting Limit MethodResult Volatile Organic Compounds (cont.) ug/L 9/16/229/16/221.0 EPA 8260D /5030A23.2Xylenes, total ug/L J9/16/229/16/2210.0 EPA 8260D /5030A2.5C5-C6 Aliphatic hydrocarbons ug/L 9/16/229/16/2210.0 EPA 8260D /5030A131C7-C8 Aliphatic hydrocarbons ug/L J9/16/229/16/2210.0 EPA 8260D /5030A4.8C9-C10 Aliphatic hydrocarbons ug/L 9/16/229/16/2210.0 EPA 8260D /5030A40.2C9-C10 Alkyl Benzenes ug/L 9/16/229/16/2210.0 EPA 8260D /5030A211Gasoline Range Organics Project Name: 19219-3965 S. Washington Blvd, Ogden, UT CtF WO#: 22I1429 www.ChemtechFord.com Page 10 of 41Page 10 of 41 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 Engineering Michael Sauerwein 2800 South Redwood Road West Valley City, UT 84119-2375 PO#: Receipt: Date Reported: Project Name: 9/16/22 10:25 @ 6.1 °C 9/22/2022 19219-3965 S. Washington Blvd, Ogden, UT Sample ID: B4-W Lab ID: 22I1429-04Matrix: Water Flag(s)Units Analysis Date/Time Date Sampled: 9/15/22 15:40 Preparation Date/Time Sampled By: Michael Sauerwein Minimum Reporting Limit MethodResult Diesel Range mg/L 9/20/229/20/221.0 EPA 8015C/3510BNDDiesel Range Organics Volatile Organic Compounds ug/L 9/16/229/16/221.0 EPA 8260D /5030AND1,1,1,2-Tetrachloroethane ug/L 9/16/229/16/221.0 EPA 8260D /5030AND1,1,1-Trichloroethane ug/L 9/16/229/16/221.0 EPA 8260D /5030AND1,1,2,2-Tetrachloroethane ug/L 9/16/229/16/221.0 EPA 8260D /5030AND1,1,2-Trichloroethane ug/L 9/16/229/16/221.0 EPA 8260D /5030AND1,1,2-Trichlorotrifluoroethane ug/L 9/16/229/16/221.0 EPA 8260D /5030AND1,1-Dichloroethane ug/L 9/16/229/16/221.0 EPA 8260D /5030AND1,1-Dichloroethene ug/L 9/16/229/16/221.0 EPA 8260D /5030AND1,1-Dichloropropene ug/L 9/16/229/16/2220.0 EPA 8260D /5030AND2-Hexanone ug/L 9/16/229/16/221.0 EPA 8260D /5030AND1,2,3-Trichlorobenzene ug/L 9/16/229/16/221.0 EPA 8260D /5030AND1,2,3-Trichloropropane ug/L 9/16/229/16/221.0 EPA 8260D /5030AND1,2,4-Trichlorobenzene ug/L 9/16/229/16/221.0 EPA 8260D /5030AND1,2,4-Trimethylbenzene ug/L 9/16/229/16/221.0 EPA 8260D /5030AND1,2-Dibromo-3-chloropropane ug/L 9/16/229/16/221.0 EPA 8260D /5030AND1,2-Dibromoethane (EDB) ug/L 9/16/229/16/221.0 EPA 8260D /5030AND1,2-Dichlorobenzene ug/L 9/16/229/16/221.0 EPA 8260D /5030AND1,2-Dichloroethane ug/L 9/16/229/16/221.0 EPA 8260D /5030AND1,2-Dichloropropane ug/L 9/16/229/16/221.0 EPA 8260D /5030AND1,3,5-Trimethylbenzene ug/L 9/16/229/16/221.0 EPA 8260D /5030AND1,3-Dichlorobenzene ug/L 9/16/229/16/221.0 EPA 8260D /5030AND1,3-Dichloropropane ug/L 9/16/229/16/221.0 EPA 8260D /5030AND1,4-Dichlorobenzene ug/L 9/16/229/16/221.0 EPA 8260D /5030AND2,2-Dichloropropane ug/L 9/16/229/16/221.0 EPA 8260D /5030AND2-Chlorotoluene ug/L J-LOW9/16/229/16/2210.0 EPA 8260D /5030AND2-Nitropropane ug/L 9/16/229/16/221.0 EPA 8260D /5030AND4-Chlorotoluene ug/L 9/16/229/16/2210.0 EPA 8260D /5030ANDAcetone ug/L 9/16/229/16/2210.0 EPA 8260D /5030ANDAcrylonitrile ug/L 9/16/229/16/220.4 EPA 8260D /5030ANDBenzene ug/L 9/16/229/16/221.0 EPA 8260D /5030ANDBromobenzene ug/L 9/16/229/16/221.0 EPA 8260D /5030ANDBromochloromethane ug/L 9/16/229/16/221.0 EPA 8260D /5030ANDBromodichloromethane ug/L 9/16/229/16/221.0 EPA 8260D /5030ANDBromoform ug/L 9/16/229/16/221.0 EPA 8260D /5030ANDBromomethane ug/L 9/16/229/16/221.0 EPA 8260D /5030ANDCarbon Disulfide Project Name: 19219-3965 S. Washington Blvd, Ogden, UT CtF WO#: 22I1429 www.ChemtechFord.com Page 11 of 41Page 11 of 41 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 Engineering Michael Sauerwein 2800 South Redwood Road West Valley City, UT 84119-2375 PO#: Receipt: Date Reported: Project Name: 9/16/22 10:25 @ 6.1 °C 9/22/2022 19219-3965 S. Washington Blvd, Ogden, UT Sample ID: B4-W (cont.) Lab ID: 22I1429-04Matrix: Water Flag(s)Units Analysis Date/Time Date Sampled: 9/15/22 15:40 Preparation Date/Time Sampled By: Michael Sauerwein Minimum Reporting Limit MethodResult Volatile Organic Compounds (cont.) ug/L 9/16/229/16/221.0 EPA 8260D /5030ANDCarbon Tetrachloride ug/L 9/16/229/16/221.0 EPA 8260D /5030ANDChlorobenzene ug/L 9/16/229/16/221.0 EPA 8260D /5030ANDChloroethane ug/L 9/16/229/16/221.0 EPA 8260D /5030ANDChloroform ug/L 9/16/229/16/221.0 EPA 8260D /5030ANDChloromethane ug/L 9/16/229/16/221.0 EPA 8260D /5030ANDcis-1,2-Dichloroethene ug/L 9/16/229/16/221.0 EPA 8260D /5030ANDcis-1,3-Dichloropropene ug/L 9/16/229/16/2220.0 EPA 8260D /5030ANDCyclohexanone ug/L 9/16/229/16/221.0 EPA 8260D /5030ANDDibromochloromethane ug/L 9/16/229/16/221.0 EPA 8260D /5030ANDDibromomethane ug/L 9/16/229/16/221.0 EPA 8260D /5030ANDDichlorodifluoromethane ug/L 9/16/229/16/2210.0 EPA 8260D /5030ANDEthyl Acetate ug/L 9/16/229/16/221.0 EPA 8260D /5030ANDEthylbenzene ug/L 9/16/229/16/221.0 EPA 8260D /5030ANDEthyl Ether ug/L 9/16/229/16/221.0 EPA 8260D /5030ANDHexachlorobutadiene ug/L 9/16/229/16/2210.0 EPA 8260D /5030ANDIsobutanol ug/L 9/16/229/16/221.0 EPA 8260D /5030ANDIsopropylbenzene ug/L 9/16/229/16/2210.0 EPA 8260D /5030ANDMethyl Ethyl Ketone ug/L 9/16/229/16/2210.0 EPA 8260D /5030ANDMethyl Isobutyl Ketone ug/L 9/16/229/16/222.0 EPA 8260D /5030ANDMethylene Chloride ug/L 9/16/229/16/221.0 EPA 8260D /5030ANDMethyl-tert-butyl ether (MTBE) ug/L 9/16/229/16/221.0 EPA 8260D /5030ANDNaphthalene ug/L J-LOW9/16/229/16/2240.0 EPA 8260D /5030ANDn-Butyl Alcohol ug/L 9/16/229/16/221.0 EPA 8260D /5030ANDn-Butylbenzene ug/L 9/16/229/16/2220.0 EPA 8260D /5030ANDNitrobenzene ug/L 9/16/229/16/221.0 EPA 8260D /5030ANDn-Propyl Benzene ug/L 9/16/229/16/221.0 EPA 8260D /5030ANDp-Isopropyltoluene ug/L 9/16/229/16/221.0 EPA 8260D /5030A2.4sec-Butyl Benzene ug/L 9/16/229/16/221.0 EPA 8260D /5030ANDStyrene ug/L 9/16/229/16/221.0 EPA 8260D /5030ANDtert-Butylbenzene ug/L 9/16/229/16/221.0 EPA 8260D /5030ANDTetrachloroethene ug/L 9/16/229/16/221.0 EPA 8260D /5030ANDToluene ug/L 9/16/229/16/221.0 EPA 8260D /5030ANDtrans-1,2-Dichloroethene ug/L 9/16/229/16/221.0 EPA 8260D /5030ANDtrans-1,3-Dichloropropene ug/L 9/16/229/16/221.0 EPA 8260D /5030ANDTrichloroethene ug/L 9/16/229/16/221.0 EPA 8260D /5030ANDTrichlorofluoromethane ug/L 9/16/229/16/221.0 EPA 8260D /5030ANDVinyl Chloride Project Name: 19219-3965 S. Washington Blvd, Ogden, UT CtF WO#: 22I1429 www.ChemtechFord.com Page 12 of 41Page 12 of 41 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 Engineering Michael Sauerwein 2800 South Redwood Road West Valley City, UT 84119-2375 PO#: Receipt: Date Reported: Project Name: 9/16/22 10:25 @ 6.1 °C 9/22/2022 19219-3965 S. Washington Blvd, Ogden, UT Sample ID: B4-W (cont.) Lab ID: 22I1429-04Matrix: Water Flag(s)Units Analysis Date/Time Date Sampled: 9/15/22 15:40 Preparation Date/Time Sampled By: Michael Sauerwein Minimum Reporting Limit MethodResult Volatile Organic Compounds (cont.) ug/L 9/16/229/16/221.0 EPA 8260D /5030ANDXylenes, total ug/L 9/16/229/16/2210.0 EPA 8260D /5030A22.0C5-C6 Aliphatic hydrocarbons ug/L 9/16/229/16/2210.0 EPA 8260D /5030A534C7-C8 Aliphatic hydrocarbons ug/L 9/16/229/16/2210.0 EPA 8260D /5030A12.0C9-C10 Aliphatic hydrocarbons ug/L 9/16/229/16/2210.0 EPA 8260D /5030A76.8C9-C10 Alkyl Benzenes ug/L 9/16/229/16/2210.0 EPA 8260D /5030A645Gasoline Range Organics Project Name: 19219-3965 S. Washington Blvd, Ogden, UT CtF WO#: 22I1429 www.ChemtechFord.com Page 13 of 41Page 13 of 41 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 Engineering Michael Sauerwein 2800 South Redwood Road West Valley City, UT 84119-2375 PO#: Receipt: Date Reported: Project Name: 9/16/22 10:25 @ 6.1 °C 9/22/2022 19219-3965 S. Washington Blvd, Ogden, UT Sample ID: B5-W Lab ID: 22I1429-05Matrix: Water Flag(s)Units Analysis Date/Time Date Sampled: 9/15/22 13:20 Preparation Date/Time Sampled By: Michael Sauerwein Minimum Reporting Limit MethodResult Diesel Range mg/L 9/20/229/20/221.0 EPA 8015C/3510B2.4Diesel Range Organics Volatile Organic Compounds ug/L 9/16/229/16/221.0 EPA 8260D /5030AND1,1,1,2-Tetrachloroethane ug/L 9/16/229/16/221.0 EPA 8260D /5030AND1,1,1-Trichloroethane ug/L 9/16/229/16/221.0 EPA 8260D /5030AND1,1,2,2-Tetrachloroethane ug/L 9/16/229/16/221.0 EPA 8260D /5030AND1,1,2-Trichloroethane ug/L 9/16/229/16/221.0 EPA 8260D /5030AND1,1,2-Trichlorotrifluoroethane ug/L 9/16/229/16/221.0 EPA 8260D /5030AND1,1-Dichloroethane ug/L 9/16/229/16/221.0 EPA 8260D /5030AND1,1-Dichloroethene ug/L 9/16/229/16/221.0 EPA 8260D /5030AND1,1-Dichloropropene ug/L 9/16/229/16/2220.0 EPA 8260D /5030AND2-Hexanone ug/L 9/16/229/16/221.0 EPA 8260D /5030AND1,2,3-Trichlorobenzene ug/L 9/16/229/16/221.0 EPA 8260D /5030AND1,2,3-Trichloropropane ug/L 9/16/229/16/221.0 EPA 8260D /5030AND1,2,4-Trichlorobenzene ug/L 9/16/229/16/221.0 EPA 8260D /5030A11.21,2,4-Trimethylbenzene ug/L 9/16/229/16/221.0 EPA 8260D /5030AND1,2-Dibromo-3-chloropropane ug/L 9/16/229/16/221.0 EPA 8260D /5030AND1,2-Dibromoethane (EDB) ug/L 9/16/229/16/221.0 EPA 8260D /5030AND1,2-Dichlorobenzene ug/L 9/16/229/16/221.0 EPA 8260D /5030AND1,2-Dichloroethane ug/L 9/16/229/16/221.0 EPA 8260D /5030AND1,2-Dichloropropane ug/L 9/16/229/16/221.0 EPA 8260D /5030A3.71,3,5-Trimethylbenzene ug/L 9/16/229/16/221.0 EPA 8260D /5030AND1,3-Dichlorobenzene ug/L 9/16/229/16/221.0 EPA 8260D /5030AND1,3-Dichloropropane ug/L 9/16/229/16/221.0 EPA 8260D /5030AND1,4-Dichlorobenzene ug/L 9/16/229/16/221.0 EPA 8260D /5030AND2,2-Dichloropropane ug/L 9/16/229/16/221.0 EPA 8260D /5030AND2-Chlorotoluene ug/L J-LOW9/16/229/16/2210.0 EPA 8260D /5030AND2-Nitropropane ug/L 9/16/229/16/221.0 EPA 8260D /5030AND4-Chlorotoluene ug/L 9/16/229/16/2210.0 EPA 8260D /5030ANDAcetone ug/L 9/16/229/16/2210.0 EPA 8260D /5030ANDAcrylonitrile ug/L 9/16/229/16/220.4 EPA 8260D /5030ANDBenzene ug/L 9/16/229/16/221.0 EPA 8260D /5030ANDBromobenzene ug/L 9/16/229/16/221.0 EPA 8260D /5030ANDBromochloromethane ug/L 9/16/229/16/221.0 EPA 8260D /5030ANDBromodichloromethane ug/L 9/16/229/16/221.0 EPA 8260D /5030ANDBromoform ug/L 9/16/229/16/221.0 EPA 8260D /5030ANDBromomethane ug/L 9/16/229/16/221.0 EPA 8260D /5030ANDCarbon Disulfide Project Name: 19219-3965 S. Washington Blvd, Ogden, UT CtF WO#: 22I1429 www.ChemtechFord.com Page 14 of 41Page 14 of 41 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 Engineering Michael Sauerwein 2800 South Redwood Road West Valley City, UT 84119-2375 PO#: Receipt: Date Reported: Project Name: 9/16/22 10:25 @ 6.1 °C 9/22/2022 19219-3965 S. Washington Blvd, Ogden, UT Sample ID: B5-W (cont.) Lab ID: 22I1429-05Matrix: Water Flag(s)Units Analysis Date/Time Date Sampled: 9/15/22 13:20 Preparation Date/Time Sampled By: Michael Sauerwein Minimum Reporting Limit MethodResult Volatile Organic Compounds (cont.) ug/L 9/16/229/16/221.0 EPA 8260D /5030ANDCarbon Tetrachloride ug/L 9/16/229/16/221.0 EPA 8260D /5030ANDChlorobenzene ug/L 9/16/229/16/221.0 EPA 8260D /5030ANDChloroethane ug/L 9/16/229/16/221.0 EPA 8260D /5030ANDChloroform ug/L 9/16/229/16/221.0 EPA 8260D /5030ANDChloromethane ug/L 9/16/229/16/221.0 EPA 8260D /5030ANDcis-1,2-Dichloroethene ug/L 9/16/229/16/221.0 EPA 8260D /5030ANDcis-1,3-Dichloropropene ug/L 9/16/229/16/2220.0 EPA 8260D /5030ANDCyclohexanone ug/L 9/16/229/16/221.0 EPA 8260D /5030ANDDibromochloromethane ug/L 9/16/229/16/221.0 EPA 8260D /5030ANDDibromomethane ug/L 9/16/229/16/221.0 EPA 8260D /5030ANDDichlorodifluoromethane ug/L 9/16/229/16/2210.0 EPA 8260D /5030ANDEthyl Acetate ug/L 9/16/229/16/2210.0 EPA 8260D /5030A186Ethylbenzene ug/L 9/16/229/16/221.0 EPA 8260D /5030ANDEthyl Ether ug/L 9/16/229/16/221.0 EPA 8260D /5030ANDHexachlorobutadiene ug/L 9/16/229/16/2210.0 EPA 8260D /5030ANDIsobutanol ug/L 9/16/229/16/221.0 EPA 8260D /5030A45.6Isopropylbenzene ug/L 9/16/229/16/2210.0 EPA 8260D /5030ANDMethyl Ethyl Ketone ug/L 9/16/229/16/2210.0 EPA 8260D /5030ANDMethyl Isobutyl Ketone ug/L 9/16/229/16/222.0 EPA 8260D /5030ANDMethylene Chloride ug/L 9/16/229/16/221.0 EPA 8260D /5030ANDMethyl-tert-butyl ether (MTBE) ug/L 9/16/229/16/2210.0 EPA 8260D /5030A186Naphthalene ug/L J-LOW9/16/229/16/2240.0 EPA 8260D /5030ANDn-Butyl Alcohol ug/L 9/16/229/16/221.0 EPA 8260D /5030ANDn-Butylbenzene ug/L 9/16/229/16/2220.0 EPA 8260D /5030ANDNitrobenzene ug/L 9/16/229/16/2210.0 EPA 8260D /5030A154n-Propyl Benzene ug/L 9/16/229/16/221.0 EPA 8260D /5030A1.1p-Isopropyltoluene ug/L 9/16/229/16/221.0 EPA 8260D /5030A25.8sec-Butyl Benzene ug/L 9/16/229/16/221.0 EPA 8260D /5030ANDStyrene ug/L 9/16/229/16/221.0 EPA 8260D /5030ANDtert-Butylbenzene ug/L 9/16/229/16/221.0 EPA 8260D /5030ANDTetrachloroethene ug/L 9/16/229/16/221.0 EPA 8260D /5030ANDToluene ug/L 9/16/229/16/221.0 EPA 8260D /5030ANDtrans-1,2-Dichloroethene ug/L 9/16/229/16/221.0 EPA 8260D /5030ANDtrans-1,3-Dichloropropene ug/L 9/16/229/16/221.0 EPA 8260D /5030ANDTrichloroethene ug/L 9/16/229/16/221.0 EPA 8260D /5030ANDTrichlorofluoromethane ug/L 9/16/229/16/221.0 EPA 8260D /5030ANDVinyl Chloride Project Name: 19219-3965 S. Washington Blvd, Ogden, UT CtF WO#: 22I1429 www.ChemtechFord.com Page 15 of 41Page 15 of 41 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 Engineering Michael Sauerwein 2800 South Redwood Road West Valley City, UT 84119-2375 PO#: Receipt: Date Reported: Project Name: 9/16/22 10:25 @ 6.1 °C 9/22/2022 19219-3965 S. Washington Blvd, Ogden, UT Sample ID: B5-W (cont.) Lab ID: 22I1429-05Matrix: Water Flag(s)Units Analysis Date/Time Date Sampled: 9/15/22 13:20 Preparation Date/Time Sampled By: Michael Sauerwein Minimum Reporting Limit MethodResult Volatile Organic Compounds (cont.) ug/L 9/16/229/16/221.0 EPA 8260D /5030A50.2Xylenes, total ug/L 9/16/229/16/2210.0 EPA 8260D /5030A48.2C5-C6 Aliphatic hydrocarbons ug/L 9/16/229/16/2210.0 EPA 8260D /5030A1040C7-C8 Aliphatic hydrocarbons ug/L 9/16/229/16/2210.0 EPA 8260D /5030A83.0C9-C10 Aliphatic hydrocarbons ug/L 9/16/229/16/2210.0 EPA 8260D /5030A4160C9-C10 Alkyl Benzenes ug/L 9/16/229/16/2210.0 EPA 8260D /5030A5810Gasoline Range Organics Project Name: 19219-3965 S. Washington Blvd, Ogden, UT CtF WO#: 22I1429 www.ChemtechFord.com Page 16 of 41Page 16 of 41 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 Engineering Michael Sauerwein 2800 South Redwood Road West Valley City, UT 84119-2375 PO#: Receipt: Date Reported: Project Name: 9/16/22 10:25 @ 6.1 °C 9/22/2022 19219-3965 S. Washington Blvd, Ogden, UT Sample ID: B6-W Lab ID: 22I1429-06Matrix: Water Flag(s)Units Analysis Date/Time Date Sampled: 9/15/22 14:10 Preparation Date/Time Sampled By: Michael Sauerwein Minimum Reporting Limit MethodResult Diesel Range mg/L 9/20/229/20/221.0 EPA 8015C/3510BNDDiesel Range Organics Volatile Organic Compounds ug/L 9/19/229/19/221.0 EPA 8260D /5030AND1,1,1,2-Tetrachloroethane ug/L 9/19/229/19/221.0 EPA 8260D /5030AND1,1,1-Trichloroethane ug/L 9/19/229/19/221.0 EPA 8260D /5030AND1,1,2,2-Tetrachloroethane ug/L 9/19/229/19/221.0 EPA 8260D /5030AND1,1,2-Trichloroethane ug/L J-LOW9/19/229/19/221.0 EPA 8260D /5030AND1,1,2-Trichlorotrifluoroethane ug/L 9/19/229/19/221.0 EPA 8260D /5030AND1,1-Dichloroethane ug/L 9/19/229/19/221.0 EPA 8260D /5030AND1,1-Dichloroethene ug/L 9/19/229/19/221.0 EPA 8260D /5030AND1,1-Dichloropropene ug/L 9/19/229/19/2220.0 EPA 8260D /5030AND2-Hexanone ug/L 9/19/229/19/221.0 EPA 8260D /5030AND1,2,3-Trichlorobenzene ug/L 9/19/229/19/221.0 EPA 8260D /5030AND1,2,3-Trichloropropane ug/L 9/19/229/19/221.0 EPA 8260D /5030AND1,2,4-Trichlorobenzene ug/L 9/19/229/19/221.0 EPA 8260D /5030AND1,2,4-Trimethylbenzene ug/L 9/19/229/19/221.0 EPA 8260D /5030AND1,2-Dibromo-3-chloropropane ug/L 9/19/229/19/221.0 EPA 8260D /5030AND1,2-Dibromoethane (EDB) ug/L 9/19/229/19/221.0 EPA 8260D /5030AND1,2-Dichlorobenzene ug/L 9/19/229/19/221.0 EPA 8260D /5030AND1,2-Dichloroethane ug/L 9/19/229/19/221.0 EPA 8260D /5030AND1,2-Dichloropropane ug/L 9/19/229/19/221.0 EPA 8260D /5030AND1,3,5-Trimethylbenzene ug/L 9/19/229/19/221.0 EPA 8260D /5030AND1,3-Dichlorobenzene ug/L 9/19/229/19/221.0 EPA 8260D /5030AND1,3-Dichloropropane ug/L 9/19/229/19/221.0 EPA 8260D /5030AND1,4-Dichlorobenzene ug/L 9/19/229/19/221.0 EPA 8260D /5030AND2,2-Dichloropropane ug/L 9/19/229/19/221.0 EPA 8260D /5030AND2-Chlorotoluene ug/L J-LOW9/19/229/19/2210.0 EPA 8260D /5030AND2-Nitropropane ug/L 9/19/229/19/221.0 EPA 8260D /5030AND4-Chlorotoluene ug/L 9/19/229/19/2210.0 EPA 8260D /5030ANDAcetone ug/L 9/19/229/19/2210.0 EPA 8260D /5030ANDAcrylonitrile ug/L 9/19/229/19/220.4 EPA 8260D /5030ANDBenzene ug/L 9/19/229/19/221.0 EPA 8260D /5030ANDBromobenzene ug/L 9/19/229/19/221.0 EPA 8260D /5030ANDBromochloromethane ug/L 9/19/229/19/221.0 EPA 8260D /5030ANDBromodichloromethane ug/L 9/19/229/19/221.0 EPA 8260D /5030ANDBromoform ug/L 9/19/229/19/221.0 EPA 8260D /5030ANDBromomethane ug/L 9/19/229/19/221.0 EPA 8260D /5030ANDCarbon Disulfide Project Name: 19219-3965 S. Washington Blvd, Ogden, UT CtF WO#: 22I1429 www.ChemtechFord.com Page 17 of 41Page 17 of 41 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 Engineering Michael Sauerwein 2800 South Redwood Road West Valley City, UT 84119-2375 PO#: Receipt: Date Reported: Project Name: 9/16/22 10:25 @ 6.1 °C 9/22/2022 19219-3965 S. Washington Blvd, Ogden, UT Sample ID: B6-W (cont.) Lab ID: 22I1429-06Matrix: Water Flag(s)Units Analysis Date/Time Date Sampled: 9/15/22 14:10 Preparation Date/Time Sampled By: Michael Sauerwein Minimum Reporting Limit MethodResult Volatile Organic Compounds (cont.) ug/L J-LOW, MS-Low 9/19/229/19/221.0 EPA 8260D /5030ANDCarbon Tetrachloride ug/L 9/19/229/19/221.0 EPA 8260D /5030ANDChlorobenzene ug/L 9/19/229/19/221.0 EPA 8260D /5030ANDChloroethane ug/L 9/19/229/19/221.0 EPA 8260D /5030ANDChloroform ug/L 9/19/229/19/221.0 EPA 8260D /5030ANDChloromethane ug/L 9/19/229/19/221.0 EPA 8260D /5030ANDcis-1,2-Dichloroethene ug/L 9/19/229/19/221.0 EPA 8260D /5030ANDcis-1,3-Dichloropropene ug/L MS-Low9/19/229/19/2220.0 EPA 8260D /5030ANDCyclohexanone ug/L 9/19/229/19/221.0 EPA 8260D /5030ANDDibromochloromethane ug/L 9/19/229/19/221.0 EPA 8260D /5030ANDDibromomethane ug/L J-LOW9/19/229/19/221.0 EPA 8260D /5030ANDDichlorodifluoromethane ug/L 9/19/229/19/2210.0 EPA 8260D /5030ANDEthyl Acetate ug/L 9/19/229/19/221.0 EPA 8260D /5030A1.6Ethylbenzene ug/L 9/19/229/19/221.0 EPA 8260D /5030ANDEthyl Ether ug/L 9/19/229/19/221.0 EPA 8260D /5030ANDHexachlorobutadiene ug/L 9/19/229/19/2210.0 EPA 8260D /5030ANDIsobutanol ug/L 9/19/229/19/221.0 EPA 8260D /5030A2.8Isopropylbenzene ug/L 9/19/229/19/2210.0 EPA 8260D /5030ANDMethyl Ethyl Ketone ug/L 9/19/229/19/2210.0 EPA 8260D /5030ANDMethyl Isobutyl Ketone ug/L 9/19/229/19/222.0 EPA 8260D /5030ANDMethylene Chloride ug/L 9/19/229/19/221.0 EPA 8260D /5030ANDMethyl-tert-butyl ether (MTBE) ug/L 9/19/229/19/221.0 EPA 8260D /5030A16.9Naphthalene ug/L J-LOW9/19/229/19/2240.0 EPA 8260D /5030ANDn-Butyl Alcohol ug/L 9/19/229/19/221.0 EPA 8260D /5030ANDn-Butylbenzene ug/L J-LOW9/19/229/19/2220.0 EPA 8260D /5030ANDNitrobenzene ug/L 9/19/229/19/221.0 EPA 8260D /5030A9.7n-Propyl Benzene ug/L 9/19/229/19/221.0 EPA 8260D /5030ANDp-Isopropyltoluene ug/L 9/19/229/19/221.0 EPA 8260D /5030A7.9sec-Butyl Benzene ug/L 9/19/229/19/221.0 EPA 8260D /5030ANDStyrene ug/L 9/19/229/19/221.0 EPA 8260D /5030ANDtert-Butylbenzene ug/L 9/19/229/19/221.0 EPA 8260D /5030ANDTetrachloroethene ug/L 9/19/229/19/221.0 EPA 8260D /5030ANDToluene ug/L 9/19/229/19/221.0 EPA 8260D /5030ANDtrans-1,2-Dichloroethene ug/L 9/19/229/19/221.0 EPA 8260D /5030ANDtrans-1,3-Dichloropropene ug/L 9/19/229/19/221.0 EPA 8260D /5030ANDTrichloroethene ug/L 9/19/229/19/221.0 EPA 8260D /5030ANDTrichlorofluoromethane Project Name: 19219-3965 S. Washington Blvd, Ogden, UT CtF WO#: 22I1429 www.ChemtechFord.com Page 18 of 41Page 18 of 41 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 Engineering Michael Sauerwein 2800 South Redwood Road West Valley City, UT 84119-2375 PO#: Receipt: Date Reported: Project Name: 9/16/22 10:25 @ 6.1 °C 9/22/2022 19219-3965 S. Washington Blvd, Ogden, UT Sample ID: B6-W (cont.) Lab ID: 22I1429-06Matrix: Water Flag(s)Units Analysis Date/Time Date Sampled: 9/15/22 14:10 Preparation Date/Time Sampled By: Michael Sauerwein Minimum Reporting Limit MethodResult Volatile Organic Compounds (cont.) ug/L MS-Low9/19/229/19/221.0 EPA 8260D /5030ANDVinyl Chloride ug/L 9/19/229/19/221.0 EPA 8260D /5030ANDXylenes, total ug/L J9/19/229/19/2210.0 EPA 8260D /5030A7.2C5-C6 Aliphatic hydrocarbons ug/L 9/19/229/19/2210.0 EPA 8260D /5030A392C7-C8 Aliphatic hydrocarbons ug/L 9/19/229/19/2210.0 EPA 8260D /5030A19.3C9-C10 Aliphatic hydrocarbons ug/L 9/19/229/19/2210.0 EPA 8260D /5030A534C9-C10 Alkyl Benzenes ug/L 9/19/229/19/2210.0 EPA 8260D /5030A970Gasoline Range Organics Project Name: 19219-3965 S. Washington Blvd, Ogden, UT CtF WO#: 22I1429 www.ChemtechFord.com Page 19 of 41Page 19 of 41 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 Engineering Michael Sauerwein 2800 South Redwood Road West Valley City, UT 84119-2375 PO#: Receipt: Date Reported: Project Name: 9/16/22 10:25 @ 6.1 °C 9/22/2022 19219-3965 S. Washington Blvd, Ogden, UT Sample ID: B7-W Lab ID: 22I1429-07Matrix: Water Flag(s)Units Analysis Date/Time Date Sampled: 9/15/22 15:05 Preparation Date/Time Sampled By: Michael Sauerwein Minimum Reporting Limit MethodResult Diesel Range mg/L 9/20/229/20/221.0 EPA 8015C/3510BNDDiesel Range Organics Volatile Organic Compounds ug/L 9/19/229/19/221.0 EPA 8260D /5030AND1,1,1,2-Tetrachloroethane ug/L 9/19/229/19/221.0 EPA 8260D /5030AND1,1,1-Trichloroethane ug/L 9/19/229/19/221.0 EPA 8260D /5030AND1,1,2,2-Tetrachloroethane ug/L 9/19/229/19/221.0 EPA 8260D /5030AND1,1,2-Trichloroethane ug/L J-LOW9/19/229/19/221.0 EPA 8260D /5030AND1,1,2-Trichlorotrifluoroethane ug/L 9/19/229/19/221.0 EPA 8260D /5030AND1,1-Dichloroethane ug/L 9/19/229/19/221.0 EPA 8260D /5030AND1,1-Dichloroethene ug/L 9/19/229/19/221.0 EPA 8260D /5030AND1,1-Dichloropropene ug/L 9/19/229/19/2220.0 EPA 8260D /5030AND2-Hexanone ug/L 9/19/229/19/221.0 EPA 8260D /5030AND1,2,3-Trichlorobenzene ug/L 9/19/229/19/221.0 EPA 8260D /5030AND1,2,3-Trichloropropane ug/L 9/19/229/19/221.0 EPA 8260D /5030AND1,2,4-Trichlorobenzene ug/L 9/19/229/19/221.0 EPA 8260D /5030AND1,2,4-Trimethylbenzene ug/L 9/19/229/19/221.0 EPA 8260D /5030AND1,2-Dibromo-3-chloropropane ug/L 9/19/229/19/221.0 EPA 8260D /5030AND1,2-Dibromoethane (EDB) ug/L 9/19/229/19/221.0 EPA 8260D /5030AND1,2-Dichlorobenzene ug/L 9/19/229/19/221.0 EPA 8260D /5030AND1,2-Dichloroethane ug/L 9/19/229/19/221.0 EPA 8260D /5030AND1,2-Dichloropropane ug/L 9/19/229/19/221.0 EPA 8260D /5030AND1,3,5-Trimethylbenzene ug/L 9/19/229/19/221.0 EPA 8260D /5030AND1,3-Dichlorobenzene ug/L 9/19/229/19/221.0 EPA 8260D /5030AND1,3-Dichloropropane ug/L 9/19/229/19/221.0 EPA 8260D /5030AND1,4-Dichlorobenzene ug/L 9/19/229/19/221.0 EPA 8260D /5030AND2,2-Dichloropropane ug/L 9/19/229/19/221.0 EPA 8260D /5030AND2-Chlorotoluene ug/L J-LOW9/19/229/19/2210.0 EPA 8260D /5030AND2-Nitropropane ug/L 9/19/229/19/221.0 EPA 8260D /5030AND4-Chlorotoluene ug/L 9/19/229/19/2210.0 EPA 8260D /5030ANDAcetone ug/L 9/19/229/19/2210.0 EPA 8260D /5030ANDAcrylonitrile ug/L 9/19/229/19/220.4 EPA 8260D /5030ANDBenzene ug/L 9/19/229/19/221.0 EPA 8260D /5030ANDBromobenzene ug/L 9/19/229/19/221.0 EPA 8260D /5030ANDBromochloromethane ug/L 9/19/229/19/221.0 EPA 8260D /5030ANDBromodichloromethane ug/L 9/19/229/19/221.0 EPA 8260D /5030ANDBromoform ug/L 9/19/229/19/221.0 EPA 8260D /5030ANDBromomethane ug/L 9/19/229/19/221.0 EPA 8260D /5030ANDCarbon Disulfide Project Name: 19219-3965 S. Washington Blvd, Ogden, UT CtF WO#: 22I1429 www.ChemtechFord.com Page 20 of 41Page 20 of 41 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 Engineering Michael Sauerwein 2800 South Redwood Road West Valley City, UT 84119-2375 PO#: Receipt: Date Reported: Project Name: 9/16/22 10:25 @ 6.1 °C 9/22/2022 19219-3965 S. Washington Blvd, Ogden, UT Sample ID: B7-W (cont.) Lab ID: 22I1429-07Matrix: Water Flag(s)Units Analysis Date/Time Date Sampled: 9/15/22 15:05 Preparation Date/Time Sampled By: Michael Sauerwein Minimum Reporting Limit MethodResult Volatile Organic Compounds (cont.) ug/L J-LOW9/19/229/19/221.0 EPA 8260D /5030ANDCarbon Tetrachloride ug/L 9/19/229/19/221.0 EPA 8260D /5030ANDChlorobenzene ug/L 9/19/229/19/221.0 EPA 8260D /5030ANDChloroethane ug/L 9/19/229/19/221.0 EPA 8260D /5030ANDChloroform ug/L 9/19/229/19/221.0 EPA 8260D /5030ANDChloromethane ug/L 9/19/229/19/221.0 EPA 8260D /5030ANDcis-1,2-Dichloroethene ug/L 9/19/229/19/221.0 EPA 8260D /5030ANDcis-1,3-Dichloropropene ug/L 9/19/229/19/2220.0 EPA 8260D /5030ANDCyclohexanone ug/L 9/19/229/19/221.0 EPA 8260D /5030ANDDibromochloromethane ug/L 9/19/229/19/221.0 EPA 8260D /5030ANDDibromomethane ug/L J-LOW9/19/229/19/221.0 EPA 8260D /5030ANDDichlorodifluoromethane ug/L 9/19/229/19/2210.0 EPA 8260D /5030ANDEthyl Acetate ug/L 9/19/229/19/221.0 EPA 8260D /5030ANDEthylbenzene ug/L 9/19/229/19/221.0 EPA 8260D /5030ANDEthyl Ether ug/L 9/19/229/19/221.0 EPA 8260D /5030ANDHexachlorobutadiene ug/L 9/19/229/19/2210.0 EPA 8260D /5030ANDIsobutanol ug/L 9/19/229/19/221.0 EPA 8260D /5030ANDIsopropylbenzene ug/L 9/19/229/19/2210.0 EPA 8260D /5030ANDMethyl Ethyl Ketone ug/L 9/19/229/19/2210.0 EPA 8260D /5030ANDMethyl Isobutyl Ketone ug/L 9/19/229/19/222.0 EPA 8260D /5030ANDMethylene Chloride ug/L 9/19/229/19/221.0 EPA 8260D /5030ANDMethyl-tert-butyl ether (MTBE) ug/L 9/19/229/19/221.0 EPA 8260D /5030ANDNaphthalene ug/L J-LOW9/19/229/19/2240.0 EPA 8260D /5030ANDn-Butyl Alcohol ug/L 9/19/229/19/221.0 EPA 8260D /5030ANDn-Butylbenzene ug/L J-LOW9/19/229/19/2220.0 EPA 8260D /5030ANDNitrobenzene ug/L 9/19/229/19/221.0 EPA 8260D /5030ANDn-Propyl Benzene ug/L 9/19/229/19/221.0 EPA 8260D /5030ANDp-Isopropyltoluene ug/L 9/19/229/19/221.0 EPA 8260D /5030ANDsec-Butyl Benzene ug/L 9/19/229/19/221.0 EPA 8260D /5030ANDStyrene ug/L 9/19/229/19/221.0 EPA 8260D /5030ANDtert-Butylbenzene ug/L 9/19/229/19/221.0 EPA 8260D /5030ANDTetrachloroethene ug/L 9/19/229/19/221.0 EPA 8260D /5030ANDToluene ug/L 9/19/229/19/221.0 EPA 8260D /5030ANDtrans-1,2-Dichloroethene ug/L 9/19/229/19/221.0 EPA 8260D /5030ANDtrans-1,3-Dichloropropene ug/L 9/19/229/19/221.0 EPA 8260D /5030ANDTrichloroethene ug/L 9/19/229/19/221.0 EPA 8260D /5030ANDTrichlorofluoromethane ug/L 9/19/229/19/221.0 EPA 8260D /5030ANDVinyl Chloride Project Name: 19219-3965 S. Washington Blvd, Ogden, UT CtF WO#: 22I1429 www.ChemtechFord.com Page 21 of 41Page 21 of 41 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 Engineering Michael Sauerwein 2800 South Redwood Road West Valley City, UT 84119-2375 PO#: Receipt: Date Reported: Project Name: 9/16/22 10:25 @ 6.1 °C 9/22/2022 19219-3965 S. Washington Blvd, Ogden, UT Sample ID: B7-W (cont.) Lab ID: 22I1429-07Matrix: Water Flag(s)Units Analysis Date/Time Date Sampled: 9/15/22 15:05 Preparation Date/Time Sampled By: Michael Sauerwein Minimum Reporting Limit MethodResult Volatile Organic Compounds (cont.) ug/L 9/19/229/19/221.0 EPA 8260D /5030ANDXylenes, total ug/L 9/19/229/19/2210.0 EPA 8260D /5030ANDC5-C6 Aliphatic hydrocarbons ug/L J9/19/229/19/2210.0 EPA 8260D /5030A5.2C7-C8 Aliphatic hydrocarbons ug/L J9/19/229/19/2210.0 EPA 8260D /5030A0.5C9-C10 Aliphatic hydrocarbons ug/L 9/19/229/19/2210.0 EPA 8260D /5030ANDC9-C10 Alkyl Benzenes ug/L 9/19/229/19/2210.0 EPA 8260D /5030ANDGasoline Range Organics Project Name: 19219-3965 S. Washington Blvd, Ogden, UT CtF WO#: 22I1429 www.ChemtechFord.com Page 22 of 41Page 22 of 41 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 Engineering Michael Sauerwein 2800 South Redwood Road West Valley City, UT 84119-2375 PO#: Receipt: Date Reported: Project Name: 9/16/22 10:25 @ 6.1 °C 9/22/2022 19219-3965 S. Washington Blvd, Ogden, UT 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. Flag Descriptions J = Detected but below the Reporting Limit; therefore, result is an estimated concentration (CLP J-Flag). J-LOW = Estimated low due to low recovery of LCS or CCV MS-Low = Estimated low due to Matrix Spike recovery. Project Name: 19219-3965 S. Washington Blvd, Ogden, UT CtF WO#: 22I1429 www.ChemtechFord.com Page 23 of 41Page 23 of 41 Page 24 of 41 QC Report for Work Order (WO) - 22I1429 % Rec RPD RPD Max MRL DFResultSpk ValueLimitsSource ConcAnalyte Blank - EPA 8015C/3510B QC Sample ID: BWI1023-BLK1 Batch: BWI1023 Date Prepared: 09/20/2022 Date Analyzed: 09/20/2022 Diesel Range Organics ND 1.0 1.00 LCS - EPA 8015C/3510B QC Sample ID: BWI1023-BS1 Batch: BWI1023 Date Prepared: 09/20/2022 Date Analyzed: 09/20/2022 Diesel Range Organics 95.6 50 - 150 38 40.0 1.0 1.00 Matrix Spike - EPA 8015C/3510B QC Sample ID: BWI1023-MS1 QC Source Sample: 22I1429-05Batch: BWI1023 Date Prepared: 09/20/2022 Date Analyzed: 09/20/2022 Diesel Range Organics 97.3 50 - 150 41 2 40.0 1.0 1.00 Matrix Spike Dup - EPA 8015C/3510B QC Sample ID: BWI1023-MSD1 QC Source Sample: 22I1429-05Batch: BWI1023 Date Prepared: 09/20/2022 Date Analyzed: 09/20/2022 Diesel Range Organics 95.3 1.90 50 - 150 20 40 2 40.0 1.0 1.00 CtF WO#: 22I1429 www.ChemtechFord.com Page 25 of 41 QC Report for Work Order (WO) - 22I1429 % Rec RPD RPD Max MRL DFResultSpk ValueLimitsSource ConcAnalyte Blank - EPA 8260D /5030A QC Sample ID: BWI0850-BLK1 Batch: BWI0850 Date Prepared: 09/16/2022 Date Analyzed: 09/16/2022 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 20.0 1.00 2-Nitropropane ND 10.0 1.00 J-LOW - Estimated low due to low recovery of LCS or CCV 4-Chlorotoluene ND 1.0 1.00 Acetone ND 10.0 1.00 Acrylonitrile ND 10.0 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 20.0 1.00 Dibromochloromethane ND 1.0 1.00 Dibromomethane ND 1.0 1.00 Dichlorodifluoromethane ND 1.0 1.00 Ethyl Acetate ND 10.0 1.00 Ethyl Ether ND 1.0 1.00 Ethylbenzene ND 1.0 1.00 Hexachlorobutadiene ND 1.0 1.00 CtF WO#: 22I1429 www.ChemtechFord.com Page 26 of 41 QC Report for Work Order (WO) - 22I1429 % Rec RPD RPD Max MRL DFResultSpk ValueLimitsSource ConcAnalyte Blank - EPA 8260D /5030A (cont.) QC Sample ID: BWI0850-BLK1 Batch: BWI0850 Date Prepared: 09/16/2022 Date Analyzed: 09/16/2022 Isobutanol ND 10.0 1.00 Isopropylbenzene ND 1.0 1.00 Methyl Ethyl Ketone ND 10.0 1.00 Methyl Isobutyl Ketone ND 10.0 1.00 Methylene Chloride ND 2.0 1.00 Methyl-tert-butyl ether (MTBE)ND 1.0 1.00 Naphthalene ND 1.0 1.00 n-Butyl Alcohol ND 40.0 1.00 J-LOW - Estimated low due to low recovery of LCS or CCV n-Butylbenzene ND 1.0 1.00 Nitrobenzene ND 20.0 1.00 n-Propyl Benzene 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 1.0 1.00 Xylenes, total ND 1.0 1.00 QC Sample ID: BWI0982-BLK1 Batch: BWI0982 Date Prepared: 09/19/2022 Date Analyzed: 09/19/2022 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 J-LOW - Estimated low due to low recovery of LCS or CCV 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 CtF WO#: 22I1429 www.ChemtechFord.com Page 27 of 41 QC Report for Work Order (WO) - 22I1429 % Rec RPD RPD Max MRL DFResultSpk ValueLimitsSource ConcAnalyte Blank - EPA 8260D /5030A (cont.) QC Sample ID: BWI0982-BLK1 Batch: BWI0982 Date Prepared: 09/19/2022 Date Analyzed: 09/19/2022 2-Hexanone ND 20.0 1.00 2-Nitropropane ND 10.0 1.00 J-LOW - Estimated low due to low recovery of LCS or CCV 4-Chlorotoluene ND 1.0 1.00 Acetone ND 10.0 1.00 Acrylonitrile ND 10.0 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 J-LOW - Estimated low due to low recovery of LCS or CCV 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 20.0 1.00 Dibromochloromethane ND 1.0 1.00 Dibromomethane ND 1.0 1.00 Dichlorodifluoromethane ND 1.0 1.00 Ethyl Acetate ND 10.0 1.00 Ethyl Ether ND 1.0 1.00 Ethylbenzene ND 1.0 1.00 Hexachlorobutadiene ND 1.0 1.00 Isobutanol ND 10.0 1.00 Isopropylbenzene ND 1.0 1.00 Methyl Ethyl Ketone ND 10.0 1.00 Methyl Isobutyl Ketone ND 10.0 1.00 Methylene Chloride ND 2.0 1.00 Methyl-tert-butyl ether (MTBE)ND 1.0 1.00 Naphthalene ND 1.0 1.00 n-Butyl Alcohol ND 40.0 1.00 J-LOW - Estimated low due to low recovery of LCS or CCV n-Butylbenzene ND 1.0 1.00 Nitrobenzene ND 20.0 1.00 J-LOW - Estimated low due to low recovery of LCS or CCV n-Propyl Benzene 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 CtF WO#: 22I1429 www.ChemtechFord.com Page 28 of 41 QC Report for Work Order (WO) - 22I1429 % Rec RPD RPD Max MRL DFResultSpk ValueLimitsSource ConcAnalyte Blank - EPA 8260D /5030A (cont.) QC Sample ID: BWI0982-BLK1 Batch: BWI0982 Date Prepared: 09/19/2022 Date Analyzed: 09/19/2022 Trichlorofluoromethane ND 1.0 1.00 Vinyl Chloride ND 1.0 1.00 Xylenes, total ND 1.0 1.00 QC Sample ID: BWI0982-BLK2 Batch: BWI0982 Date Prepared: 09/19/2022 Date Analyzed: 09/19/2022 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 J-LOW - Estimated low due to low recovery of LCS or CCV 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 20.0 1.00 2-Nitropropane ND 10.0 1.00 J-LOW - Estimated low due to low recovery of LCS or CCV 4-Chlorotoluene ND 1.0 1.00 Acetone ND 10.0 1.00 Acrylonitrile ND 10.0 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 J-LOW - Estimated low due to low recovery of LCS or CCV 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 CtF WO#: 22I1429 www.ChemtechFord.com Page 29 of 41 QC Report for Work Order (WO) - 22I1429 % Rec RPD RPD Max MRL DFResultSpk ValueLimitsSource ConcAnalyte Blank - EPA 8260D /5030A (cont.) QC Sample ID: BWI0982-BLK2 Batch: BWI0982 Date Prepared: 09/19/2022 Date Analyzed: 09/19/2022 Cyclohexanone ND 20.0 1.00 Dibromochloromethane ND 1.0 1.00 Dibromomethane ND 1.0 1.00 Dichlorodifluoromethane ND 1.0 1.00 Ethyl Acetate ND 10.0 1.00 Ethyl Ether ND 1.0 1.00 Ethylbenzene ND 1.0 1.00 Hexachlorobutadiene ND 1.0 1.00 Isobutanol ND 10.0 1.00 Isopropylbenzene ND 1.0 1.00 Methyl Ethyl Ketone ND 10.0 1.00 Methyl Isobutyl Ketone ND 10.0 1.00 Methylene Chloride ND 2.0 1.00 Methyl-tert-butyl ether (MTBE)ND 1.0 1.00 Naphthalene ND 1.0 1.00 n-Butyl Alcohol ND 40.0 1.00 J-LOW - Estimated low due to low recovery of LCS or CCV n-Butylbenzene ND 1.0 1.00 Nitrobenzene ND 20.0 1.00 J-LOW - Estimated low due to low recovery of LCS or CCV n-Propyl Benzene 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 1.0 1.00 Xylenes, total ND 1.0 1.00 LCS - EPA 8260D /5030A QC Sample ID: BWI0850-BS1 Batch: BWI0850 Date Prepared: 09/16/2022 Date Analyzed: 09/16/2022 1,1,1,2-Tetrachloroethane 101 70 - 130 10.1 10.0 1.0 1.00 1,1,1-Trichloroethane 107 70 - 130 10.7 10.0 1.0 1.00 1,1,2,2-Tetrachloroethane 113 70 - 130 11.3 10.0 1.0 1.00 1,1,2-Trichloroethane 107 70 - 130 10.7 10.0 1.0 1.00 1,1,2-Trichlorotrifluoroethane 126 70 - 130 12.6 10.0 1.0 1.00 1,1-Dichloroethane 130 70 - 130 13.0 10.0 1.0 1.00 1,1-Dichloroethene 122 70 - 130 12.2 10.0 1.0 1.00 1,1-Dichloropropene 121 70 - 130 12.1 10.0 1.0 1.00 1,2,3-Trichlorobenzene 106 70 - 130 10.6 10.0 1.0 1.00 1,2,3-Trichloropropane 109 70 - 130 10.9 10.0 1.0 1.00 1,2,4-Trichlorobenzene 108 70 - 130 10.8 10.0 1.0 1.00 1,2,4-Trimethylbenzene 113 70 - 130 11.3 10.0 1.0 1.00 1,2-Dibromo-3-chloropropane 105 70 - 130 10.5 10.0 1.0 1.00 1,2-Dibromoethane (EDB)115 70 - 130 11.5 10.0 1.0 1.00 CtF WO#: 22I1429 www.ChemtechFord.com Page 30 of 41 QC Report for Work Order (WO) - 22I1429 % Rec RPD RPD Max MRL DFResultSpk ValueLimitsSource ConcAnalyte LCS - EPA 8260D /5030A (cont.) QC Sample ID: BWI0850-BS1 Batch: BWI0850 Date Prepared: 09/16/2022 Date Analyzed: 09/16/2022 1,2-Dichlorobenzene 108 70 - 130 10.8 10.0 1.0 1.00 1,2-Dichloroethane 110 70 - 130 11.0 10.0 1.0 1.00 1,2-Dichloropropane 113 70 - 130 11.3 10.0 1.0 1.00 1,3,5-Trimethylbenzene 114 70 - 130 11.4 10.0 1.0 1.00 1,3-Dichlorobenzene 112 70 - 130 11.2 10.0 1.0 1.00 1,3-Dichloropropane 112 70 - 130 11.2 10.0 1.0 1.00 1,4-Dichlorobenzene 106 70 - 130 10.6 10.0 1.0 1.00 2,2-Dichloropropane 144 70 - 130 14.4 10.0 1.0 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. 2-Chlorotoluene 113 70 - 130 11.3 10.0 1.0 1.00 2-Hexanone 131 70 - 130 131 100 20.0 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. 2-Nitropropane 70 - 130 ND 35.0 10.0 1.00 J-LOW - Estimated low due to low recovery of LCS or CCV 4-Chlorotoluene 114 70 - 130 11.4 10.0 1.0 1.00 Acetone 124 70 - 130 124 100 10.0 1.00 Acrylonitrile 124 70 - 130 124 100 10.0 1.00 Benzene 113 70 - 130 11.3 10.0 0.4 1.00 Bromobenzene 113 70 - 130 11.3 10.0 1.0 1.00 Bromochloromethane 112 70 - 130 11.2 10.0 1.0 1.00 Bromodichloromethane 109 70 - 130 10.9 10.0 1.0 1.00 Bromoform 105 70 - 130 10.5 10.0 1.0 1.00 Bromomethane 112 70 - 130 11.2 10.0 1.0 1.00 Carbon Disulfide 137 70 - 130 13.7 10.0 1.0 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. Carbon Tetrachloride 96.3 70 - 130 9.63 10.0 1.0 1.00 Chlorobenzene 111 70 - 130 11.1 10.0 1.0 1.00 Chloroethane 138 70 - 130 13.8 10.0 1.0 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. Chloroform 108 70 - 130 10.8 10.0 1.0 1.00 Chloromethane 126 70 - 130 12.6 10.0 1.0 1.00 cis-1,2-Dichloroethene 108 70 - 130 10.8 10.0 1.0 1.00 cis-1,3-Dichloropropene 117 70 - 130 11.7 10.0 1.0 1.00 Cyclohexanone 111 70 - 130 223 200 20.0 1.00 Dibromochloromethane 103 70 - 130 10.3 10.0 1.0 1.00 Dibromomethane 115 70 - 130 11.5 10.0 1.0 1.00 Dichlorodifluoromethane 136 70 - 130 13.6 10.0 1.0 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. Ethyl Acetate 117 70 - 130 117 100 10.0 1.00 Ethyl Ether 118 70 - 130 11.8 10.0 1.0 1.00 Ethylbenzene 118 70 - 130 11.8 10.0 1.0 1.00 Hexachlorobutadiene 108 70 - 130 10.8 10.0 1.0 1.00 Hexane 0 - 200 ND 10.0 1.0 1.00 Isobutanol 106 70 - 130 211 200 10.0 1.00 Isopropylbenzene 116 70 - 130 11.6 10.0 1.0 1.00 Methyl Ethyl Ketone 113 70 - 130 113 100 10.0 1.00 Methyl Isobutyl Ketone 109 70 - 130 109 100 10.0 1.00 CtF WO#: 22I1429 www.ChemtechFord.com Page 31 of 41 QC Report for Work Order (WO) - 22I1429 % Rec RPD RPD Max MRL DFResultSpk ValueLimitsSource ConcAnalyte LCS - EPA 8260D /5030A (cont.) QC Sample ID: BWI0850-BS1 Batch: BWI0850 Date Prepared: 09/16/2022 Date Analyzed: 09/16/2022 Methylene Chloride 109 70 - 130 10.9 10.0 2.0 1.00 Methyl-tert-butyl ether (MTBE)114 70 - 130 11.4 10.0 1.0 1.00 Naphthalene 106 70 - 130 10.6 10.0 1.0 1.00 n-Butyl Alcohol 70 - 130 ND 200 40.0 1.00 J-LOW - Estimated low due to low recovery of LCS or CCV n-Butylbenzene 113 70 - 130 11.3 10.0 1.0 1.00 Nitrobenzene 72.9 70 - 130 146 200 20.0 1.00 n-Propyl Benzene 119 70 - 130 11.9 10.0 1.0 1.00 p-Isopropyltoluene 115 70 - 130 11.5 10.0 1.0 1.00 sec-Butyl Benzene 116 70 - 130 11.6 10.0 1.0 1.00 Styrene 111 70 - 130 11.1 10.0 1.0 1.00 tert-Butylbenzene 116 70 - 130 11.6 10.0 1.0 1.00 Tetrachloroethene 118 70 - 130 11.8 10.0 1.0 1.00 Tetrahydrofuran 94.4 70 - 130 9.44 10.0 1.0 1.00 Toluene 110 70 - 130 11.0 10.0 1.0 1.00 trans-1,2-Dichloroethene 110 70 - 130 11.0 10.0 1.0 1.00 trans-1,3-Dichloropropene 91.1 70 - 130 9.11 10.0 1.0 1.00 Trichloroethene 114 70 - 130 11.4 10.0 1.0 1.00 Trichlorofluoromethane 129 70 - 130 12.9 10.0 1.0 1.00 Vinyl Chloride 127 70 - 130 12.7 10.0 1.0 1.00 Xylenes, total 114 70 - 130 34.1 30.0 1.0 1.00 QC Sample ID: BWI0982-BS1 Batch: BWI0982 Date Prepared: 09/19/2022 Date Analyzed: 09/19/2022 1,1,1,2-Tetrachloroethane 120 70 - 130 5.98 5.00 1.0 1.00 1,1,1-Trichloroethane 85.8 70 - 130 4.29 5.00 1.0 1.00 1,1,2,2-Tetrachloroethane 172 70 - 130 8.58 5.00 1.0 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. 1,1,2-Trichloroethane 145 70 - 130 7.27 5.00 1.0 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. 1,1,2-Trichlorotrifluoroethane 62.0 70 - 130 3.10 5.00 1.0 1.00 J-LOW - Estimated low due to low recovery of LCS or CCV 1,1-Dichloroethane 132 70 - 130 6.60 5.00 1.0 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. 1,1-Dichloroethene 97.0 70 - 130 4.85 5.00 1.0 1.00 1,1-Dichloropropene 94.0 70 - 130 4.70 5.00 1.0 1.00 1,2,3-Trichlorobenzene 143 70 - 130 7.15 5.00 1.0 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. 1,2,3-Trichloropropane 161 70 - 130 8.07 5.00 1.0 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. 1,2,4-Trichlorobenzene 143 70 - 130 7.16 5.00 1.0 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. 1,2,4-Trimethylbenzene 128 70 - 130 6.39 5.00 1.0 1.00 1,2-Dibromo-3-chloropropane 164 70 - 130 8.21 5.00 1.0 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. 1,2-Dibromoethane (EDB)158 70 - 130 7.90 5.00 1.0 1.00 CtF WO#: 22I1429 www.ChemtechFord.com Page 32 of 41 QC Report for Work Order (WO) - 22I1429 % Rec RPD RPD Max MRL DFResultSpk ValueLimitsSource ConcAnalyte LCS - EPA 8260D /5030A (cont.) QC Sample ID: BWI0982-BS1 Batch: BWI0982 Date Prepared: 09/19/2022 Date Analyzed: 09/19/2022 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. 1,2-Dichlorobenzene 138 70 - 130 6.92 5.00 1.0 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. 1,2-Dichloroethane 145 70 - 130 7.25 5.00 1.0 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. 1,2-Dichloropropane 134 70 - 130 6.70 5.00 1.0 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. 1,3,5-Trimethylbenzene 119 70 - 130 5.93 5.00 1.0 1.00 1,3-Dichlorobenzene 140 70 - 130 7.01 5.00 1.0 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. 1,3-Dichloropropane 153 70 - 130 7.66 5.00 1.0 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. 1,4-Dichlorobenzene 139 70 - 130 6.94 5.00 1.0 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. 2,2-Dichloropropane 109 70 - 130 5.45 5.00 1.0 1.00 2-Chlorotoluene 133 70 - 130 6.66 5.00 1.0 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. 2-Hexanone 164 70 - 130 82.1 50.0 20.0 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. 2-Nitropropane 70 - 130 ND 17.5 10.0 1.00 J-LOW - Estimated low due to low recovery of LCS or CCV 4-Chlorotoluene 135 70 - 130 6.74 5.00 1.0 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. Acetone 180 70 - 130 90.2 50.0 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. Acrylonitrile 185 70 - 130 92.6 50.0 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. Benzene 120 70 - 130 5.99 5.00 0.4 1.00 Bromobenzene 147 70 - 130 7.37 5.00 1.0 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. Bromochloromethane 154 70 - 130 7.70 5.00 1.0 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. Bromodichloromethane 127 70 - 130 6.37 5.00 1.0 1.00 Bromoform 142 70 - 130 7.10 5.00 1.0 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. Bromomethane 96.6 70 - 130 4.83 5.00 1.0 1.00 Carbon Disulfide 96.2 70 - 130 4.81 5.00 1.0 1.00 Carbon Tetrachloride 44.6 70 - 130 2.23 5.00 1.0 1.00 J-LOW - Estimated low due to low recovery of LCS or CCV CtF WO#: 22I1429 www.ChemtechFord.com Page 33 of 41 QC Report for Work Order (WO) - 22I1429 % Rec RPD RPD Max MRL DFResultSpk ValueLimitsSource ConcAnalyte LCS - EPA 8260D /5030A (cont.) QC Sample ID: BWI0982-BS1 Batch: BWI0982 Date Prepared: 09/19/2022 Date Analyzed: 09/19/2022 Chlorobenzene 130 70 - 130 6.48 5.00 1.0 1.00 Chloroethane 109 70 - 130 5.47 5.00 1.0 1.00 Chloroform 115 70 - 130 5.76 5.00 1.0 1.00 Chloromethane 107 70 - 130 5.35 5.00 1.0 1.00 cis-1,2-Dichloroethene 117 70 - 130 5.83 5.00 1.0 1.00 cis-1,3-Dichloropropene 139 70 - 130 6.97 5.00 1.0 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. Cyclohexanone 119 70 - 130 119 100 20.0 1.00 Dibromochloromethane 134 70 - 130 6.72 5.00 1.0 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. Dibromomethane 160 70 - 130 7.99 5.00 1.0 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. Dichlorodifluoromethane 64.8 70 - 130 3.24 5.00 1.0 1.00 J-LOW - Estimated low due to low recovery of LCS or CCV Ethyl Acetate 172 70 - 130 86.2 50.0 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. Ethyl Ether 153 70 - 130 7.67 5.00 1.0 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. Ethylbenzene 117 70 - 130 5.84 5.00 1.0 1.00 Hexachlorobutadiene 89.8 70 - 130 4.49 5.00 1.0 1.00 Hexane 0 - 200 ND 5.00 1.0 1.00 Isobutanol 151 70 - 130 151 100 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. Isopropylbenzene 115 70 - 130 5.74 5.00 1.0 1.00 Methyl Ethyl Ketone 156 70 - 130 78.1 50.0 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. Methyl Isobutyl Ketone 172 70 - 130 86.2 50.0 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. Methylene Chloride 129 70 - 130 6.44 5.00 2.0 1.00 Methyl-tert-butyl ether (MTBE)163 70 - 130 8.15 5.00 1.0 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. Naphthalene 153 70 - 130 7.67 5.00 1.0 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. n-Butyl Alcohol 70 - 130 ND 100 40.0 1.00 J-LOW - Estimated low due to low recovery of LCS or CCV n-Butylbenzene 102 70 - 130 5.08 5.00 1.0 1.00 Nitrobenzene 109 70 - 130 109 100 20.0 1.00 J-LOW - Estimated low due to low recovery of LCS or CCV n-Propyl Benzene 113 70 - 130 5.65 5.00 1.0 1.00 p-Isopropyltoluene 108 70 - 130 5.42 5.00 1.0 1.00 sec-Butyl Benzene 99.8 70 - 130 4.99 5.00 1.0 1.00 Styrene 125 70 - 130 6.27 5.00 1.0 1.00 tert-Butylbenzene 107 70 - 130 5.36 5.00 1.0 1.00 CtF WO#: 22I1429 www.ChemtechFord.com Page 34 of 41 QC Report for Work Order (WO) - 22I1429 % Rec RPD RPD Max MRL DFResultSpk ValueLimitsSource ConcAnalyte LCS - EPA 8260D /5030A (cont.) QC Sample ID: BWI0982-BS1 Batch: BWI0982 Date Prepared: 09/19/2022 Date Analyzed: 09/19/2022 Tetrachloroethene 96.0 70 - 130 4.80 5.00 1.0 1.00 Tetrahydrofuran 140 70 - 130 6.99 5.00 1.0 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. Toluene 115 70 - 130 5.75 5.00 1.0 1.00 trans-1,2-Dichloroethene 103 70 - 130 5.15 5.00 1.0 1.00 trans-1,3-Dichloropropene 113 70 - 130 5.66 5.00 1.0 1.00 Trichloroethene 107 70 - 130 5.33 5.00 1.0 1.00 Trichlorofluoromethane 71.0 70 - 130 3.55 5.00 1.0 1.00 Vinyl Chloride 74.8 70 - 130 3.74 5.00 1.0 1.00 Xylenes, total 119 70 - 130 17.8 15.0 1.0 1.00 Matrix Spike - EPA 8260D /5030A QC Sample ID: BWI0850-MS1 QC Source Sample: XXXXXXX-XXBatch: BWI0850 Date Prepared: 09/16/2022 Date Analyzed: 09/16/2022 1,1,1,2-Tetrachloroethane 94.4 70 - 130 236000 ND 250000 25000 1.00 1,1,1-Trichloroethane 110 70 - 130 275000 ND 250000 25000 1.00 1,1,2,2-Tetrachloroethane 109 70 - 130 273000 ND 250000 25000 1.00 1,1,2-Trichloroethane 109 70 - 130 273000 ND 250000 25000 1.00 1,1,2-Trichlorotrifluoroethane 110 70 - 130 276000 ND 250000 25000 1.00 1,1-Dichloroethane 135 70 - 130 338000 ND 250000 25000 1.00 MS-High - Estimated high due to Matrix Spike recovery. 1,1-Dichloroethene 126 70 - 130 315000 ND 250000 25000 1.00 1,1-Dichloropropene 117 70 - 130 293000 ND 250000 25000 1.00 1,2,3-Trichlorobenzene 100 70 - 130 250000 ND 250000 25000 1.00 1,2,3-Trichloropropane 104 70 - 130 260000 ND 250000 25000 1.00 1,2,4-Trichlorobenzene 100 70 - 130 251000 ND 250000 25000 1.00 1,2,4-Trimethylbenzene 107 70 - 130 268000 ND 250000 25000 1.00 1,2-Dibromo-3-chloropropane 103 70 - 130 258000 ND 250000 25000 1.00 1,2-Dibromoethane (EDB)107 70 - 130 267000 ND 250000 25000 1.00 1,2-Dichlorobenzene 102 70 - 130 254000 ND 250000 25000 1.00 1,2-Dichloroethane 106 70 - 130 265000 ND 250000 25000 1.00 1,2-Dichloropropane 111 70 - 130 277000 ND 250000 25000 1.00 1,3,5-Trimethylbenzene 106 70 - 130 266000 ND 250000 25000 1.00 1,3-Dichlorobenzene 105 70 - 130 262000 ND 250000 25000 1.00 1,3-Dichloropropane 106 70 - 130 264000 ND 250000 25000 1.00 1,4-Dichlorobenzene 102 70 - 130 255000 ND 250000 25000 1.00 2,2-Dichloropropane 119 70 - 130 298000 ND 250000 25000 1.00 2-Chlorotoluene 107 70 - 130 267000 ND 250000 25000 1.00 2-Hexanone 99.9 70 - 130 2500000 ND 2500000 500000 1.00 2-Nitropropane 70 - 130 ND ND 875000 250000 1.00 MS-Low - Estimated low due to Matrix Spike recovery. 4-Chlorotoluene 111 70 - 130 278000 ND 250000 25000 1.00 Acetone 120 70 - 130 3000000 ND 2500000 250000 1.00 Acrylonitrile 121 70 - 130 3020000 ND 2500000 250000 1.00 Benzene 46.3 70 - 130 632000 516000 250000 10000 1.00 MS-Low - Estimated low due to Matrix Spike recovery. Bromobenzene 109 70 - 130 272000 ND 250000 25000 1.00 Bromochloromethane 106 70 - 130 266000 ND 250000 25000 1.00 Bromodichloromethane 107 70 - 130 267000 ND 250000 25000 1.00 Bromoform 98.0 70 - 130 245000 ND 250000 25000 1.00 Bromomethane 94.6 70 - 130 236000 ND 250000 25000 1.00 CtF WO#: 22I1429 www.ChemtechFord.com Page 35 of 41 QC Report for Work Order (WO) - 22I1429 % Rec RPD RPD Max MRL DFResultSpk ValueLimitsSource ConcAnalyte Matrix Spike - EPA 8260D /5030A (cont.) QC Sample ID: BWI0850-MS1 QC Source Sample: XXXXXXX-XXBatch: BWI0850 Date Prepared: 09/16/2022 Date Analyzed: 09/16/2022 Carbon Disulfide 128 70 - 130 320000 ND 250000 25000 1.00 Carbon Tetrachloride 80.8 70 - 130 202000 ND 250000 25000 1.00 Chlorobenzene 106 70 - 130 264000 ND 250000 25000 1.00 Chloroethane 148 70 - 130 370000 ND 250000 25000 1.00 MS-High - Estimated high due to Matrix Spike recovery. Chloroform 113 70 - 130 284000 ND 250000 25000 1.00 Chloromethane 126 70 - 130 316000 ND 250000 25000 1.00 cis-1,2-Dichloroethene 112 70 - 130 280000 ND 250000 25000 1.00 cis-1,3-Dichloropropene 110 70 - 130 274000 ND 250000 25000 1.00 Cyclohexanone 82.4 70 - 130 4120000 ND 5000000 500000 1.00 Dibromochloromethane 96.2 70 - 130 240000 ND 250000 25000 1.00 Dibromomethane 113 70 - 130 284000 ND 250000 25000 1.00 Dichlorodifluoromethane 132 70 - 130 330000 ND 250000 25000 1.00 MS-High - Estimated high due to Matrix Spike recovery. Ethyl Acetate 116 70 - 130 2900000 ND 2500000 250000 1.00 Ethyl Ether 117 70 - 130 292000 ND 250000 25000 1.00 Ethylbenzene 109 70 - 130 273000 ND 250000 25000 1.00 Hexachlorobutadiene 91.4 70 - 130 228000 ND 250000 25000 1.00 Hexane 70 - 130 ND ND 250000 25000 1.00 Isobutanol 91.9 70 - 130 4590000 ND 5000000 250000 1.00 Isopropylbenzene 109 70 - 130 272000 ND 250000 25000 1.00 Methyl Ethyl Ketone 110 70 - 130 2760000 ND 2500000 250000 1.00 Methyl Isobutyl Ketone 110 70 - 130 2760000 ND 2500000 250000 1.00 Methylene Chloride 113 70 - 130 283000 ND 250000 50000 1.00 Methyl-tert-butyl ether (MTBE)114 70 - 130 284000 ND 250000 25000 1.00 Naphthalene 99.4 70 - 130 248000 ND 250000 25000 1.00 n-Butyl Alcohol 70 - 130 ND ND 5000000 1000000 1.00 MS-Low - Estimated low due to Matrix Spike recovery. n-Butylbenzene 101 70 - 130 253000 ND 250000 25000 1.00 Nitrobenzene 68.8 70 - 130 3440000 ND 5000000 500000 1.00 MS-Low - Estimated low due to Matrix Spike recovery. n-Propyl Benzene 113 70 - 130 282000 ND 250000 25000 1.00 p-Isopropyltoluene 104 70 - 130 261000 ND 250000 25000 1.00 sec-Butyl Benzene 103 70 - 130 258000 ND 250000 25000 1.00 Styrene 103 70 - 130 257000 ND 250000 25000 1.00 tert-Butylbenzene 106 70 - 130 264000 ND 250000 25000 1.00 Tetrachloroethene 109 70 - 130 273000 ND 250000 25000 1.00 Tetrahydrofuran 102 70 - 130 254000 ND 250000 25000 1.00 Toluene 83.9 70 - 130 420000 210000 250000 25000 1.00 trans-1,2-Dichloroethene 114 70 - 130 286000 ND 250000 25000 1.00 trans-1,3-Dichloropropene 84.1 70 - 130 210000 ND 250000 25000 1.00 Trichloroethene 110 70 - 130 276000 ND 250000 25000 1.00 Trichlorofluoromethane 127 70 - 130 318000 ND 250000 25000 1.00 Vinyl Chloride 127 70 - 130 316000 ND 250000 25000 1.00 Xylenes, total 109 70 - 130 817000 ND 750000 25000 1.00 QC Sample ID: BWI0982-MS1 QC Source Sample: 22I1429-06Batch: BWI0982 Date Prepared: 09/19/2022 Date Analyzed: 09/19/2022 1,1,1,2-Tetrachloroethane 87.5 70 - 130 43.8 ND 50.0 5.0 1.00 1,1,1-Trichloroethane 82.7 70 - 130 41.4 ND 50.0 5.0 1.00 1,1,2,2-Tetrachloroethane 112 70 - 130 55.8 ND 50.0 5.0 1.00 CtF WO#: 22I1429 www.ChemtechFord.com Page 36 of 41 QC Report for Work Order (WO) - 22I1429 % Rec RPD RPD Max MRL DFResultSpk ValueLimitsSource ConcAnalyte Matrix Spike - EPA 8260D /5030A (cont.) QC Sample ID: BWI0982-MS1 QC Source Sample: 22I1429-06Batch: BWI0982 Date Prepared: 09/19/2022 Date Analyzed: 09/19/2022 1,1,2-Trichloroethane 106 70 - 130 53.0 ND 50.0 5.0 1.00 1,1,2-Trichlorotrifluoroethane 88.1 70 - 130 44.0 ND 50.0 5.0 1.00 J-LOW - Estimated low due to low recovery of LCS or CCV 1,1-Dichloroethane 111 70 - 130 55.4 ND 50.0 5.0 1.00 1,1-Dichloroethene 97.2 70 - 130 48.6 ND 50.0 5.0 1.00 1,1-Dichloropropene 95.2 70 - 130 47.6 ND 50.0 5.0 1.00 1,2,3-Trichlorobenzene 105 70 - 130 52.3 ND 50.0 5.0 1.00 1,2,3-Trichloropropane 107 70 - 130 53.4 ND 50.0 5.0 1.00 1,2,4-Trichlorobenzene 105 70 - 130 52.6 ND 50.0 5.0 1.00 1,2,4-Trimethylbenzene 103 70 - 130 51.5 ND 50.0 5.0 1.00 1,2-Dibromo-3-chloropropane 102 70 - 130 50.8 ND 50.0 5.0 1.00 1,2-Dibromoethane (EDB)110 70 - 130 54.8 ND 50.0 5.0 1.00 1,2-Dichlorobenzene 102 70 - 130 51.0 ND 50.0 5.0 1.00 1,2-Dichloroethane 98.9 70 - 130 49.4 ND 50.0 5.0 1.00 1,2-Dichloropropane 100 70 - 130 50.2 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 104 70 - 130 51.8 ND 50.0 5.0 1.00 1,3-Dichloropropane 106 70 - 130 52.8 ND 50.0 5.0 1.00 1,4-Dichlorobenzene 101 70 - 130 50.3 ND 50.0 5.0 1.00 2,2-Dichloropropane 98.1 70 - 130 49.0 ND 50.0 5.0 1.00 2-Chlorotoluene 104 70 - 130 51.8 ND 50.0 5.0 1.00 2-Hexanone 92.4 70 - 130 462 ND 500 100 1.00 2-Nitropropane 70 - 130 ND ND 175 50.0 1.00 MS-Low - Estimated low due to Matrix Spike recovery. 4-Chlorotoluene 99.6 70 - 130 49.8 ND 50.0 5.0 1.00 Acetone 105 70 - 130 526 ND 500 50.0 1.00 Acrylonitrile 106 70 - 130 528 ND 500 50.0 1.00 Benzene 98.1 70 - 130 49.0 ND 50.0 2.0 1.00 Bromobenzene 106 70 - 130 53.0 ND 50.0 5.0 1.00 Bromochloromethane 102 70 - 130 51.1 ND 50.0 5.0 1.00 Bromodichloromethane 96.0 70 - 130 48.0 ND 50.0 5.0 1.00 Bromoform 97.2 70 - 130 48.6 ND 50.0 5.0 1.00 Bromomethane 71.3 70 - 130 35.6 ND 50.0 5.0 1.00 Carbon Disulfide 94.1 70 - 130 47.0 ND 50.0 5.0 1.00 Carbon Tetrachloride 57.1 70 - 130 28.6 ND 50.0 5.0 1.00 MS-Low - Estimated low due to Matrix Spike recovery. Chlorobenzene 101 70 - 130 50.6 ND 50.0 5.0 1.00 Chloroethane 101 70 - 130 50.6 ND 50.0 5.0 1.00 Chloroform 95.0 70 - 130 47.5 ND 50.0 5.0 1.00 Chloromethane 92.8 70 - 130 46.4 ND 50.0 5.0 1.00 cis-1,2-Dichloroethene 95.9 70 - 130 48.0 ND 50.0 5.0 1.00 cis-1,3-Dichloropropene 104 70 - 130 52.2 ND 50.0 5.0 1.00 Cyclohexanone 69.1 70 - 130 691 ND 1000 100 1.00 MS-Low - Estimated low due to Matrix Spike recovery. Dibromochloromethane 92.8 70 - 130 46.4 ND 50.0 5.0 1.00 Dibromomethane 106 70 - 130 53.2 ND 50.0 5.0 1.00 Dichlorodifluoromethane 92.5 70 - 130 46.2 ND 50.0 5.0 1.00 Ethyl Acetate 129 70 - 130 646 ND 500 50.0 1.00 Ethyl Ether 101 70 - 130 50.3 ND 50.0 5.0 1.00 Ethylbenzene 99.7 70 - 130 51.4 1.60 50.0 5.0 1.00 Hexachlorobutadiene 99.5 70 - 130 49.8 ND 50.0 5.0 1.00 CtF WO#: 22I1429 www.ChemtechFord.com Page 37 of 41 QC Report for Work Order (WO) - 22I1429 % Rec RPD RPD Max MRL DFResultSpk ValueLimitsSource ConcAnalyte Matrix Spike - EPA 8260D /5030A (cont.) QC Sample ID: BWI0982-MS1 QC Source Sample: 22I1429-06Batch: BWI0982 Date Prepared: 09/19/2022 Date Analyzed: 09/19/2022 Hexane 70 - 130 ND ND 50.0 5.0 1.00 Isobutanol 82.0 70 - 130 820 ND 1000 50.0 1.00 Isopropylbenzene 100 70 - 130 52.8 2.79 50.0 5.0 1.00 Methyl Ethyl Ketone 91.7 70 - 130 458 ND 500 50.0 1.00 Methyl Isobutyl Ketone 97.4 70 - 130 487 ND 500 50.0 1.00 Methylene Chloride 98.2 70 - 130 49.1 ND 50.0 10.0 1.00 Methyl-tert-butyl ether (MTBE)103 70 - 130 51.4 ND 50.0 5.0 1.00 Naphthalene 99.9 70 - 130 66.8 16.9 50.0 5.0 1.00 n-Butyl Alcohol 70 - 130 ND ND 1000 200 1.00 MS-Low - Estimated low due to Matrix Spike recovery. n-Butylbenzene 110 70 - 130 55.0 ND 50.0 5.0 1.00 Nitrobenzene 66.4 70 - 130 664 ND 1000 100 1.00 J-LOW - Estimated low due to low recovery of LCS or CCV n-Propyl Benzene 99.1 70 - 130 59.2 9.66 50.0 5.0 1.00 p-Isopropyltoluene 102 70 - 130 50.8 ND 50.0 5.0 1.00 sec-Butyl Benzene 97.9 70 - 130 56.8 7.86 50.0 5.0 1.00 Styrene 98.0 70 - 130 49.0 ND 50.0 5.0 1.00 tert-Butylbenzene 104 70 - 130 51.8 ND 50.0 5.0 1.00 Tetrachloroethene 96.8 70 - 130 48.4 ND 50.0 5.0 1.00 Tetrahydrofuran 94.8 70 - 130 47.4 ND 50.0 5.0 1.00 Toluene 95.2 70 - 130 47.6 ND 50.0 5.0 1.00 trans-1,2-Dichloroethene 90.8 70 - 130 45.4 ND 50.0 5.0 1.00 trans-1,3-Dichloropropene 83.7 70 - 130 41.8 ND 50.0 5.0 1.00 Trichloroethene 93.4 70 - 130 46.7 ND 50.0 5.0 1.00 Trichlorofluoromethane 85.5 70 - 130 42.8 ND 50.0 5.0 1.00 Vinyl Chloride 80.1 70 - 130 40.0 ND 50.0 5.0 1.00 Xylenes, total 97.1 70 - 130 146 ND 150 5.0 1.00 Matrix Spike Dup - EPA 8260D /5030A QC Sample ID: BWI0850-MSD1 QC Source Sample: XXXXXXX-XXBatch: BWI0850 Date Prepared: 09/16/2022 Date Analyzed: 09/16/2022 1,1,1,2-Tetrachloroethane 91.2 3.45 70 - 130 20 228000 ND 250000 25000 1.00 1,1,1-Trichloroethane 100 9.61 70 - 130 20 250000 ND 250000 25000 1.00 1,1,2,2-Tetrachloroethane 107 2.13 70 - 130 20 268000 ND 250000 25000 1.00 1,1,2-Trichloroethane 103 5.64 70 - 130 20 258000 ND 250000 25000 1.00 1,1,2-Trichlorotrifluoroethane 106 4.35 70 - 130 20 264000 ND 250000 25000 1.00 1,1-Dichloroethane 129 4.61 70 - 130 20 323000 ND 250000 25000 1.00 1,1-Dichloroethene 114 9.92 70 - 130 20 285000 ND 250000 25000 1.00 1,1-Dichloropropene 110 6.79 70 - 130 20 274000 ND 250000 25000 1.00 1,2,3-Trichlorobenzene 99.3 0.902 70 - 130 20 248000 ND 250000 25000 1.00 1,2,3-Trichloropropane 104 0.0962 70 - 130 20 260000 ND 250000 25000 1.00 1,2,4-Trichlorobenzene 102 1.29 70 - 130 20 254000 ND 250000 25000 1.00 1,2,4-Trimethylbenzene 104 3.32 70 - 130 20 259000 ND 250000 25000 1.00 1,2-Dibromo-3-chloropropane 99.9 3.35 70 - 130 20 250000 ND 250000 25000 1.00 1,2-Dibromoethane (EDB)104 3.04 70 - 130 20 259000 ND 250000 25000 1.00 1,2-Dichlorobenzene 100 1.69 70 - 130 20 250000 ND 250000 25000 1.00 1,2-Dichloroethane 103 2.58 70 - 130 20 258000 ND 250000 25000 1.00 1,2-Dichloropropane 107 3.58 70 - 130 20 267000 ND 250000 25000 1.00 1,3,5-Trimethylbenzene 105 0.851 70 - 130 20 263000 ND 250000 25000 1.00 1,3-Dichlorobenzene 104 0.765 70 - 130 20 260000 ND 250000 25000 1.00 1,3-Dichloropropane 107 0.847 70 - 130 20 267000 ND 250000 25000 1.00 CtF WO#: 22I1429 www.ChemtechFord.com Page 38 of 41 QC Report for Work Order (WO) - 22I1429 % Rec RPD RPD Max MRL DFResultSpk ValueLimitsSource ConcAnalyte Matrix Spike Dup - EPA 8260D /5030A (cont.) QC Sample ID: BWI0850-MSD1 QC Source Sample: XXXXXXX-XXBatch: BWI0850 Date Prepared: 09/16/2022 Date Analyzed: 09/16/2022 1,4-Dichlorobenzene 99.2 2.88 70 - 130 20 248000 ND 250000 25000 1.00 2,2-Dichloropropane 123 3.47 70 - 130 20 308000 ND 250000 25000 1.00 2-Chlorotoluene 107 0.281 70 - 130 20 266000 ND 250000 25000 1.00 2-Hexanone 93.3 6.89 70 - 130 20 2330000 ND 2500000 500000 1.00 2-Nitropropane 30.3 70 - 130 20 265000 ND 875000 250000 1.00 MS-Low - Estimated low due to Matrix Spike recovery. 4-Chlorotoluene 109 1.73 70 - 130 20 273000 ND 250000 25000 1.00 Acetone 118 1.94 70 - 130 20 2940000 ND 2500000 250000 1.00 Acrylonitrile 116 4.32 70 - 130 20 2900000 ND 2500000 250000 1.00 Benzene 42.4 8.79 70 - 130 20 622000 516000 250000 10000 1.00 MS-Low - Estimated low due to Matrix Spike recovery. Bromobenzene 108 0.829 70 - 130 20 270000 ND 250000 25000 1.00 Bromochloromethane 101 4.62 70 - 130 20 254000 ND 250000 25000 1.00 Bromodichloromethane 101 5.69 70 - 130 20 252000 ND 250000 25000 1.00 Bromoform 93.6 4.59 70 - 130 20 234000 ND 250000 25000 1.00 Bromomethane 96.8 2.30 70 - 130 20 242000 ND 250000 25000 1.00 Carbon Disulfide 121 5.46 70 - 130 20 303000 ND 250000 25000 1.00 Carbon Tetrachloride 76.5 5.47 70 - 130 20 191000 ND 250000 25000 1.00 Chlorobenzene 104 1.72 70 - 130 20 259000 ND 250000 25000 1.00 Chloroethane 129 13.9 70 - 130 20 322000 ND 250000 25000 1.00 Chloroform 104 9.13 70 - 130 20 259000 ND 250000 25000 1.00 Chloromethane 119 6.19 70 - 130 20 297000 ND 250000 25000 1.00 cis-1,2-Dichloroethene 106 4.86 70 - 130 20 266000 ND 250000 25000 1.00 cis-1,3-Dichloropropene 106 3.25 70 - 130 20 265000 ND 250000 25000 1.00 Cyclohexanone 80.8 1.91 70 - 130 20 4040000 ND 5000000 500000 1.00 Dibromochloromethane 95.3 0.940 70 - 130 20 238000 ND 250000 25000 1.00 Dibromomethane 112 1.69 70 - 130 20 279000 ND 250000 25000 1.00 Dichlorodifluoromethane 122 8.04 70 - 130 20 304000 ND 250000 25000 1.00 Ethyl Acetate 110 5.65 70 - 130 20 2740000 ND 2500000 250000 1.00 Ethyl Ether 113 3.48 70 - 130 20 282000 ND 250000 25000 1.00 Ethylbenzene 108 0.919 70 - 130 20 271000 ND 250000 25000 1.00 Hexachlorobutadiene 86.4 5.62 70 - 130 20 216000 ND 250000 25000 1.00 Hexane 70 - 130 20 ND ND 250000 25000 1.00 Isobutanol 95.2 3.52 70 - 130 20 4760000 ND 5000000 250000 1.00 Isopropylbenzene 105 3.36 70 - 130 20 263000 ND 250000 25000 1.00 Methyl Ethyl Ketone 103 7.03 70 - 130 20 2570000 ND 2500000 250000 1.00 Methyl Isobutyl Ketone 105 5.32 70 - 130 20 2610000 ND 2500000 250000 1.00 Methylene Chloride 103 9.81 70 - 130 20 257000 ND 250000 50000 1.00 Methyl-tert-butyl ether (MTBE)112 1.33 70 - 130 20 281000 ND 250000 25000 1.00 Naphthalene 102 2.39 70 - 130 20 254000 ND 250000 25000 1.00 n-Butyl Alcohol 70 - 130 20 ND ND 5000000 1000000 1.00 MS-Low - Estimated low due to Matrix Spike recovery. n-Butylbenzene 95.3 6.10 70 - 130 20 238000 ND 250000 25000 1.00 Nitrobenzene 65.7 4.72 70 - 130 20 3280000 ND 5000000 500000 1.00 MS-Low - Estimated low due to Matrix Spike recovery. n-Propyl Benzene 106 6.13 70 - 130 20 265000 ND 250000 25000 1.00 p-Isopropyltoluene 96.7 7.66 70 - 130 20 242000 ND 250000 25000 1.00 sec-Butyl Benzene 98.0 4.98 70 - 130 20 245000 ND 250000 25000 1.00 Styrene 104 0.679 70 - 130 20 259000 ND 250000 25000 1.00 tert-Butylbenzene 99.3 6.24 70 - 130 20 248000 ND 250000 25000 1.00 Tetrachloroethene 104 4.87 70 - 130 20 260000 ND 250000 25000 1.00 CtF WO#: 22I1429 www.ChemtechFord.com Page 39 of 41 QC Report for Work Order (WO) - 22I1429 % Rec RPD RPD Max MRL DFResultSpk ValueLimitsSource ConcAnalyte Matrix Spike Dup - EPA 8260D /5030A (cont.) QC Sample ID: BWI0850-MSD1 QC Source Sample: XXXXXXX-XXBatch: BWI0850 Date Prepared: 09/16/2022 Date Analyzed: 09/16/2022 Tetrahydrofuran 96.5 5.25 70 - 130 20 241000 ND 250000 25000 1.00 Toluene 85.2 1.54 70 - 130 20 423000 210000 250000 25000 1.00 trans-1,2-Dichloroethene 106 7.72 70 - 130 20 264000 ND 250000 25000 1.00 trans-1,3-Dichloropropene 82.3 2.16 70 - 130 20 206000 ND 250000 25000 1.00 Trichloroethene 107 3.13 70 - 130 20 267000 ND 250000 25000 1.00 Trichlorofluoromethane 116 9.12 70 - 130 20 290000 ND 250000 25000 1.00 Vinyl Chloride 114 10.1 70 - 130 20 286000 ND 250000 25000 1.00 Xylenes, total 105 3.39 70 - 130 20 790000 ND 750000 25000 1.00 QC Sample ID: BWI0982-MSD1 QC Source Sample: 22I1429-06Batch: BWI0982 Date Prepared: 09/19/2022 Date Analyzed: 09/19/2022 1,1,1,2-Tetrachloroethane 82.5 5.88 70 - 130 20 41.2 ND 50.0 5.0 1.00 1,1,1-Trichloroethane 76.1 8.31 70 - 130 20 38.0 ND 50.0 5.0 1.00 1,1,2,2-Tetrachloroethane 116 3.60 70 - 130 20 57.9 ND 50.0 5.0 1.00 1,1,2-Trichloroethane 110 3.34 70 - 130 20 54.8 ND 50.0 5.0 1.00 1,1,2-Trichlorotrifluoroethane 75.2 15.8 70 - 130 20 37.6 ND 50.0 5.0 1.00 J-LOW - Estimated low due to low recovery of LCS or CCV 1,1-Dichloroethane 102 8.47 70 - 130 20 50.9 ND 50.0 5.0 1.00 1,1-Dichloroethene 88.8 9.03 70 - 130 20 44.4 ND 50.0 5.0 1.00 1,1-Dichloropropene 82.7 14.1 70 - 130 20 41.4 ND 50.0 5.0 1.00 1,2,3-Trichlorobenzene 106 0.951 70 - 130 20 52.8 ND 50.0 5.0 1.00 1,2,3-Trichloropropane 110 3.41 70 - 130 20 55.2 ND 50.0 5.0 1.00 1,2,4-Trichlorobenzene 104 1.53 70 - 130 20 51.8 ND 50.0 5.0 1.00 1,2,4-Trimethylbenzene 96.6 6.41 70 - 130 20 48.3 ND 50.0 5.0 1.00 1,2-Dibromo-3-chloropropane 108 6.29 70 - 130 20 54.2 ND 50.0 5.0 1.00 1,2-Dibromoethane (EDB)109 0.0914 70 - 130 20 54.7 ND 50.0 5.0 1.00 1,2-Dichlorobenzene 99.0 2.89 70 - 130 20 49.5 ND 50.0 5.0 1.00 1,2-Dichloroethane 97.4 1.53 70 - 130 20 48.7 ND 50.0 5.0 1.00 1,2-Dichloropropane 97.3 3.14 70 - 130 20 48.6 ND 50.0 5.0 1.00 1,3,5-Trimethylbenzene 93.0 9.33 70 - 130 20 46.5 ND 50.0 5.0 1.00 1,3-Dichlorobenzene 98.7 4.75 70 - 130 20 49.4 ND 50.0 5.0 1.00 1,3-Dichloropropane 104 1.33 70 - 130 20 52.1 ND 50.0 5.0 1.00 1,4-Dichlorobenzene 97.8 2.82 70 - 130 20 48.9 ND 50.0 5.0 1.00 2,2-Dichloropropane 94.2 4.06 70 - 130 20 47.1 ND 50.0 5.0 1.00 2-Chlorotoluene 95.6 7.94 70 - 130 20 47.8 ND 50.0 5.0 1.00 2-Hexanone 97.1 4.95 70 - 130 20 486 ND 500 100 1.00 2-Nitropropane 70 - 130 20 ND ND 175 50.0 1.00 MS-Low - Estimated low due to Matrix Spike recovery. 4-Chlorotoluene 97.7 1.93 70 - 130 20 48.8 ND 50.0 5.0 1.00 Acetone 114 7.99 70 - 130 20 570 ND 500 50.0 1.00 Acrylonitrile 115 8.57 70 - 130 20 576 ND 500 50.0 1.00 Benzene 89.3 9.39 70 - 130 20 44.6 ND 50.0 2.0 1.00 Bromobenzene 108 1.87 70 - 130 20 54.0 ND 50.0 5.0 1.00 Bromochloromethane 107 4.40 70 - 130 20 53.4 ND 50.0 5.0 1.00 Bromodichloromethane 95.1 0.942 70 - 130 20 47.6 ND 50.0 5.0 1.00 Bromoform 96.2 1.03 70 - 130 20 48.1 ND 50.0 5.0 1.00 Bromomethane 72.3 1.39 70 - 130 20 36.2 ND 50.0 5.0 1.00 Carbon Disulfide 83.7 11.7 70 - 130 20 41.8 ND 50.0 5.0 1.00 Carbon Tetrachloride 49.6 14.1 70 - 130 20 24.8 ND 50.0 5.0 1.00 MS-Low - Estimated low due to Matrix Spike recovery. Chlorobenzene 97.1 4.04 70 - 130 20 48.6 ND 50.0 5.0 1.00 CtF WO#: 22I1429 www.ChemtechFord.com Page 40 of 41 QC Report for Work Order (WO) - 22I1429 % Rec RPD RPD Max MRL DFResultSpk ValueLimitsSource ConcAnalyte Matrix Spike Dup - EPA 8260D /5030A (cont.) QC Sample ID: BWI0982-MSD1 QC Source Sample: 22I1429-06Batch: BWI0982 Date Prepared: 09/19/2022 Date Analyzed: 09/19/2022 Chloroethane 92.2 9.41 70 - 130 20 46.1 ND 50.0 5.0 1.00 Chloroform 91.8 3.43 70 - 130 20 45.9 ND 50.0 5.0 1.00 Chloromethane 84.8 9.01 70 - 130 20 42.4 ND 50.0 5.0 1.00 cis-1,2-Dichloroethene 92.6 3.50 70 - 130 20 46.3 ND 50.0 5.0 1.00 cis-1,3-Dichloropropene 103 1.74 70 - 130 20 51.3 ND 50.0 5.0 1.00 Cyclohexanone 83.2 18.4 70 - 130 20 832 ND 1000 100 1.00 Dibromochloromethane 94.6 1.92 70 - 130 20 47.3 ND 50.0 5.0 1.00 Dibromomethane 111 4.41 70 - 130 20 55.6 ND 50.0 5.0 1.00 Dichlorodifluoromethane 77.7 17.4 70 - 130 20 38.8 ND 50.0 5.0 1.00 Ethyl Acetate 140 8.19 70 - 130 20 702 ND 500 50.0 1.00 MS-High - Estimated high due to Matrix Spike recovery. Ethyl Ether 100 0.199 70 - 130 20 50.2 ND 50.0 5.0 1.00 Ethylbenzene 88.1 12.4 70 - 130 20 45.6 1.60 50.0 5.0 1.00 Hexachlorobutadiene 95.6 4.00 70 - 130 20 47.8 ND 50.0 5.0 1.00 Hexane 70 - 130 20 ND ND 50.0 5.0 1.00 Isobutanol 89.8 9.05 70 - 130 20 898 ND 1000 50.0 1.00 Isopropylbenzene 89.8 10.7 70 - 130 20 47.7 2.79 50.0 5.0 1.00 Methyl Ethyl Ketone 101 9.71 70 - 130 20 505 ND 500 50.0 1.00 Methyl Isobutyl Ketone 108 10.5 70 - 130 20 541 ND 500 50.0 1.00 Methylene Chloride 96.8 1.44 70 - 130 20 48.4 ND 50.0 10.0 1.00 Methyl-tert-butyl ether (MTBE)111 7.30 70 - 130 20 55.4 ND 50.0 5.0 1.00 Naphthalene 110 9.26 70 - 130 20 71.7 16.9 50.0 5.0 1.00 n-Butyl Alcohol 70 - 130 20 ND ND 1000 200 1.00 MS-Low - Estimated low due to Matrix Spike recovery. n-Butylbenzene 99.0 10.6 70 - 130 20 49.5 ND 50.0 5.0 1.00 Nitrobenzene 72.9 9.23 70 - 130 20 729 ND 1000 100 1.00 J-LOW - Estimated low due to low recovery of LCS or CCV n-Propyl Benzene 89.8 9.85 70 - 130 20 54.6 9.66 50.0 5.0 1.00 p-Isopropyltoluene 93.5 8.21 70 - 130 20 46.8 ND 50.0 5.0 1.00 sec-Butyl Benzene 85.1 14.0 70 - 130 20 50.4 7.86 50.0 5.0 1.00 Styrene 96.9 1.13 70 - 130 20 48.4 ND 50.0 5.0 1.00 tert-Butylbenzene 90.8 13.3 70 - 130 20 45.4 ND 50.0 5.0 1.00 Tetrachloroethene 82.8 15.6 70 - 130 20 41.4 ND 50.0 5.0 1.00 Tetrahydrofuran 104 8.87 70 - 130 20 51.8 ND 50.0 5.0 1.00 Toluene 87.0 9.00 70 - 130 20 43.5 ND 50.0 5.0 1.00 trans-1,2-Dichloroethene 87.4 3.82 70 - 130 20 43.7 ND 50.0 5.0 1.00 trans-1,3-Dichloropropene 83.5 0.239 70 - 130 20 41.8 ND 50.0 5.0 1.00 Trichloroethene 83.9 10.7 70 - 130 20 42.0 ND 50.0 5.0 1.00 Trichlorofluoromethane 75.0 13.1 70 - 130 20 37.5 ND 50.0 5.0 1.00 Vinyl Chloride 68.7 15.3 70 - 130 20 34.4 ND 50.0 5.0 1.00 MS-Low - Estimated low due to Matrix Spike recovery. Xylenes, total 90.3 7.22 70 - 130 20 136 ND 150 5.0 1.00 CtF WO#: 22I1429 www.ChemtechFord.com Page 41 of 41