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Home My WebLink AboutMO-8802_40323_CA_MRP_20231201_Former East Lincoln FD CES Group Engineers, LLP IMPROVING. PROTECTING. RESTORING. CHARLOTTE, NC 3525 Whitehall Park Drive, Suite 150 Charlotte, NC 28273 COLUMBIA, SC 1411 Gervais Street, Suite 140 Columbia, SC 29201 www.ces-group.net November 30, 2023 Ryan Mills Environmental Specialist North Carolina Department of Environmental Quality Mooresville Regional Office 610 East Center Avenue Mooresville, North Carolina 28115 RE: Groundwater Monitoring Report Former East Lincoln Fire Station Property Incident No.: 40323 7654 NC Highway 73 Stanley, Lincoln County, North Carolina 28164 Dear Mr. Mills: CES Group Engineers, LLP (CES), on behalf of the East Lincoln Fire Department (ELFD), is submitting this Groundwater Monitoring Report to the North Carolina Department of Environmental Quality (NCDEQ) electronically via email. Should you have any questions in regards to this submittal, please do not hesitate to contact me at (704) 325-5408. Regards, CES GROUP ENGINEERS, LLP Greg Hans, PMP Matt Sumner Environmental Division Manager Environmental Scientist/Project Manager Enclosures: Groundwater Monitoring Report CES Project No. 7604.0321ED November 30, 2023 GROUNDWATER MONITORING REPORT FORMER EAST LINCOLN FIRE STATION PROPERTY 7654 NC HIGHWAY 73 STANLEY, NC 28164 Prepared for: East Lincoln Fire Department 406 South Pilot Knob Road Stanley, NC 28164 Prepared by: CES Group Engineers, LLP 3525 Whitehall Park Drive, Suite 150 Charlotte, NC 28273 November 30, 2023 ii CES Project No. 7604.0321ED November 30, 2023 TABLE OF CONTENTS Page 1.0 SITE INFORMATION .......................................................................................... 1 1.1 Identification ........................................................................................................ 1 1.2 Contact Information............................................................................................. 1 1.3 Release Information ............................................................................................ 1 1.4 Certification ......................................................................................................... 2 2.0 EXECUTIVE SUMMARY .................................................................................... 3 3.0 SITE HISTORY AND CHARACTERIZATION .................................................... 5 3.1 UST Owner and Operator Information ............................................................... 5 3.2 UST Information .................................................................................................. 6 3.3 Non-UST Information .......................................................................................... 6 3.4 Release Description ............................................................................................ 6 3.5 Site Characteristics ............................................................................................. 6 3.6 Affected Property Owners and Occupants ......................................................... 7 3.7 Receptor Information .......................................................................................... 7 3.8 Remedial Plan Implementation ........................................................................... 8 3.9 Remediation Progress ........................................................................................ 8 4.0 CURRENT SITE ASSESSMENT INFORMATION ............................................. 9 4.1 Water Level and Free Product Thickness Measurements ................................. 9 4.2 Groundwater Monitoring Event ........................................................................... 9 4.3 Surface Water Monitoring Event ......................................................................... 9 4.4 Soil Monitoring Events ........................................................................................ 9 4.5 Summary of Soil, Groundwater, Surface Water and Free Product Assessment Information .......................................................................................................... 9 4.6 Site Geology and Hydrogeology ....................................................................... 10 4.7 Evaluation of Soil, Groundwater, Surface Water and Free Product Thickness Information ........................................................................................................ 10 4.8 Soil and Groundwater Remediation ................................................................. 11 5.0 CONCLUSIONS AND RECOMMENDATIONS ................................................ 12 5.1 Conclusions ....................................................................................................... 12 5.2 Recommendations ............................................................................................ 12 iii CES Project No. 7604.0321ED November 30, 2023 FIGURES FIGURE 1 1500’ RADIUS AND POTENTIAL RECEPTOR MAP FIGURE 2 SITE PLAN FIGURE 3 GROUNDWATER ELEVATION PLAN (SEPTEMBER 2023) FIGURE 4 BENZENE ISOCONCENTRATION PLAN (SEPTEMBER 2023) TABLES TABLE B-1 SITE HISTORY – UST/AST SYSTEM AND OTHER RELEASE INFORMATION TABLE B-2 SITE HISTORY – UST/AST OWNER/OPERATOR AND OTHER RESPONSIBLE PARTY INFORMATION TABLE B-4A SUMMARY OF SEPEMBER 26, 2023 GROUNDWATER SAMPLING RESULTS TABLE B-4B SUMMARY OF HISTORICAL GROUNDWATER AND WATER SUPPLY WELL SAMPLING RESULTS TABLE B-4C SUMMARY OF HISTORICAL WATER SUPPLY WELL SAMPLING RESULTS TABLE B-5 PUBLIC AND PRIVATE WATER SUPPLY WELL AND OTHER RECEPTOR INFORMATION TABLE B-6 PROPERTY OWNERS/OCCUPANTS TABLE B-9 CURRENT AND HISTORICAL GROUNDWATER ELEVATIONS AND FREE PRODUCT THICKNESS TABLE B-10 LAND USE APPENDICES APPENDIX A GROUNDWATER AND WATER SUPPLY WELL LABORATORY REPORTS AND CHAIN-OF-CUSTODY RECORDS iv CES Project No. 7604.0321ED November 30, 2023 ACROYNMS AND ABBREVIATIONS AS Air Sparge AST Aboveground Storage Tank bgs Below Ground Surface B-N Neighborhood Business CA Design Corrective Action Design CAP Corrective Action Plan CES CES Group Engineers, LLP COC Chain-of-Custody DTW Depth to Groundwater ELFD East Lincoln Fire Department EPA U.S. Environmental Protection Agency GCL Gross Contaminant Level GW Report Groundwater Monitoring Report ID Identification LNAPL Light Non-Aqueous Phase Liquid MADEP Massachusetts Department of Environmental Protection MW Monitoring Well N/A Not Applicable NC North Carolina NCDEQ North Carolina Department of Environmental Quality PE Professional Engineer PIN Parcel Identification Number ppm Parts Per Million ROD Record of Decision SVE Soil Vapor Extraction TOC Top of Casing TPH Total Petroleum Hydrocarbons UST Underground Storage Tank VOCs Volatile Organic Compounds VPH Volatile Petroleum Hydrocarbons Waypoint Waypoint Analytical, LLC 1 CES Project No. 7604.0321ED November 30, 2023 1.0 SITE INFORMATION 1.1 Identification Date of Report: November 30, 2023 Site Risk/Ranking: HIGH Facility Identification (ID):N/A UST Incident Number (if known): 40323 Site Name: Former East Lincoln Fire Station Street Address:7654 NC Highway 73 City/Town:Stanley Zip Code: 28164 County: Lincoln Description of Geographical Data Point (e.g., diesel fill port):Approximate Former Tank Basin Location Method (GPS, topographical map, online map, other):GIS Address Matching Latitude (decimal degrees):35.442855 Longitude (decimal degrees): -80.990130 1.2 Contact Information UST/AST Owner: Shelton Duckworth Email: Not Applicable (N/A) Address: 8019 NC Highway 73, Stanley, NC 28164 Tel: 704-827-2625 UST/AST Operator: N/A Email: N/A Address: N/A Tel: N/A Property Owner: Timothy and Mary Norman Email: N/A Address: 8059 St. Andrew Lane, Stanley, NC 28164 Tel: N/A Property Occupant: Norman Tire & Auto Email: normantireandauto@yahoo.com Address: 7654 NC Highway 73, Stanley, NC 28164 Tel: 704-827-4144 Consultant/Contractor: CES Group Engineers, LLP. Email: ghans@ces-group.net Address: 274 N NC Highway 16 Business, Denver, NC 28037 Tel: 704-489-1500 Analytical Laboratory: Waypoint Analytical State Certification No: 402 Address: 449 Springbrook Road, Charlotte, NC 28217 Tel: 704-529-6364 Other Person Associated With Release: East Lincoln Fire Department Email: ttench@eastlincolnfd.org Address: 406 S Pilot Knob Road, Stanley, NC 28164 Tel: 704-822-5999 1.3 Release Information Date Discovered: March 5, 2014 Estimated Quantity of Release: Unknown Cause of Release: Unknown Source of Release (e.g., Dispenser/Piping/UST):Unknown Sizes and Contents of Tanks or Other Containment from which the Release Occurred: Two (2) 500-gallon Gasoline, w/ Dispensers Above 2 CES Project No. 7604.0321ED November 30, 2023 1.4 Certification I, Charles D. Heleine, a North Carolina (NC) Licensed Professional Engineer (PE) employed by CES Group Engineers, LLP (CES), do certify that the information contained in this report is accurate, to the best of my knowledge. E-Signature 11/20/2023 Charles D. Heleine, NC PE No. 27196 CES is licensed to practice engineering in North Carolina (license number is F-1240). 3 CES Project No. 7604.0321ED November 30, 2023 2.0 EXECUTIVE SUMMARY This Groundwater Monitoring Report (GW Report) summarizes petroleum hydrocarbon impacts in groundwater since the submission of the last GW Report, dated April 22, 2022, for the suspected release of gasoline from two (2) adjacent underground storage tank (UST) systems at the Former East Lincoln Fire Station, located at 7654 NC Highway 73 in Stanley, North Carolina (hereafter identified as the site, subject site, subject property, or property). CES has been authorized to perform groundwater monitoring and sampling activities by the East Lincoln Fire Department (ELFD), represented by Timothy Tench, Fire Chief. During this monitoring period, groundwater samples were collected from monitoring wells (MW) MW-101, MW-103, MW-104, MW-201, MW-202, MW-203, MW-301, MW-303, MW-401, MW-402, and MW-501 and analyzed for petroleum hydrocarbon constituents on September 26, 2023. Petroleum hydrocarbon constituents were reported above the 2L Standards in monitoring wells MW-101, MW-103, MW-104, MW-301, MW-401, and MW-501. Petroleum hydrocarbon constituents were reported above the Gross Contamination Level (GCL) from the following monitoring wells during this monitoring and sampling period:  MW-101: benzene (24,000 ug/l), 1,2-dibromoethane (818 ug/l) and 1,2-dichloroethane (1,690 ug/l).  MW-104: benzene (24,100 ug/l) and 1,2-dibromoethane (445 ug/l).  MW-301: benzene (6,820 ug/l).  MW-401: benzene (8,510 ug/l) and 1,2-dibromoethane (93.1 ug/l). A summary of groundwater analytical results for this September 26, 2023, groundwater monitoring and sampling event are included in Table B-4A. A summary of historical groundwater analytical results dating back to June 2014 are included in Table B-4B. A summary of historical water supply well analytical results dating back to July 2014 are included in Table B-4C. Light non-aqueous phase liquid (LNAPL) or free product was not detected in any of the onsite groundwater monitoring wells. Because active water supply wells were identified within 1,000-feet of the site, and groundwater contamination was reported above the GCLs, the site was previously assigned a High-Risk classification by North Carolina Department of Environmental Quality (NCDEQ). However, based on a defined linear contaminant plume, historical groundwater flow direction to the southeast, the previous abandonment of water supply well (SW-5) located on the adjacent property to the south-southwest, and during recent conversations with NCDEQ representatives, reclassification of the site will be evaluated during the implementation of the Corrective Action Plan (CAP). A CAP – Record of Decision (ROD), summarizing the objectives, schedules, and milestones to track cleanup progress for the air sparge (AS) and soil vapor extraction (SVE) system that was approved in the previously submitted CAP – Corrective Action Design (CA Design) has been approved, and CES is currently working with remedial subcontractors and vendors to revise costs, schedules, and timelines after noted delays in the approval process. To date, no receptors have been reported to have been impacted by the reported petroleum release, nor are said receptors at imminent risk of being impacted based on a review of historical and current groundwater and water supply well data. Figure 1 depicts the 1,500-feet radius and potential receptor map. 4 CES Project No. 7604.0321ED November 30, 2023 This report provides data necessary to fulfill a GW Report, in accordance with 15A NCAC 2L.0100, and is formatted in conformance with Appendix A of the Guidelines for Assessment and Corrective Action for UST Releases, effective June 21, 2023. 5 CES Project No. 7604.0321ED November 30, 2023 3.0 SITE HISTORY AND CHARACTERIZATION The subject site consists of two (2) parcels, identified as east and west, respectively, situated along the south line of NC Highway 73, with the west parcel being adjacent to the east line of South Pilot Knob Road, as shown on Figure 2. A general merchandise retail store that also sold gasoline was located on the west parcel, from the 1930s until approximately 1969. A wrecker service, owned and operated by Shelton Duckworth, occupied the referenced retail store building from 1969 until 2004. The retail sale of gasoline was reportedly conducted in association with both the general merchandise store and the wrecker service until 1984. The gasoline UST systems, consisting of two (2) adjacent 500-gallon tanks and a dispenser pump directly above each tank, were reportedly removed from the site in early 1985, prior to tank registration mandates by the State of North Carolina. A building housing the newly formed ELFD was constructed on the site’s east parcel in 1956. Following demolition of the first ELFD building in February 1990, the currently existing onsite building was constructed and first occupied by the ELFD in October 1990. In 2002, ELFD acquired the subject property from Shelton Duckworth, including both the east and west parcels. Duckworth Wrecker Service moved to an offsite location in 2004, and the building on the site’s west parcel was demolished to provide space for the currently existing parking lot, where the former tank basin is located. ELFD occupied the existing onsite building from 1990 until 2008, when ELFD moved to its current location at 406 South Pilot Knob Road. The existing onsite building was leased and occupied by Tim Norman, Norman Tire and Auto from 2011 until January 2017. At that time, Mr. Norman purchased the property from the ELFD and continues to operate an automobile tire and repair facility. It is understood that Mr. Norman did not assume the environmental liability for NCDEQ Incident 40323 from the ELFD during this property transaction. An onsite water supply well reportedly served both the retail store/wrecker service building and the initial ELFD building. The currently existing building, first occupied by ELFD in October 1990, has reportedly been served by the Lincoln County public water distribution system since 1991. The onsite well was reportedly abandoned in conjunction with the demolition of the former retail store/wrecker service building in 2004. 3.1 UST Owner and Operator Information *UST Owner/Operator (Former): Shelton Duckworth Address: 8019 NC Highway 73, Stanley, NC 28164 Phone: 704-827-2625 *USTs were removed in early 1985. Other Person Associated With Release: East Lincoln Fire Department Address: 406 S Pilot Knob Road, Stanley, NC 28164 Phone: 704-822-5999 Current Property Owner: Norman Tire & Auto Address: 7654 NC Highway 73, Stanley, NC 28164 Phone: 704-827-4144 Additional responsible party information is provided in Table B-2, and above in Section 1.2. 6 CES Project No. 7604.0321ED November 30, 2023 3.2 UST Information The retail sale of gasoline at the site was reportedly terminated in 1984, and the subject tanks were reportedly removed in early 1985, prior to tank registration mandates by the State of North Carolina. The gasoline UST systems reportedly consisted of two (2) adjacent 500-gallon tanks and a dispenser pump directly above each tank. Procedural details of the 1985 closure and removal of the two (2) gasoline UST systems are reportedly undocumented and unknown. Disposal details concerning the UST systems, tank contents, soils, and/or other residual materials are reportedly undocumented and unknown. The estimated location of the former adjacent UST systems was determined in consultation with the tank owner/operator, Shelton Duckworth, and the current site representative, Timothy Tench. Orientation of the adjacent tanks could not be recalled by the owner/operator. Currently available information concerning the two (2) subject USTs is summarized in Tables B-1 and B-2. 3.3 Non-UST Information Not applicable. No aboveground storage tanks (AST) or other above ground vessels or substantial petroleum storage containers are known to exist at the site. 3.4 Release Description Soil contamination indicative of a petroleum product release near the reported location of two (2) 500-gallon gasoline USTs that were removed in 1985 was discovered during a Limited Phase II Environmental Site Assessment in March 2014. Following receipt of laboratory data for collected soil samples on March 5, 2014, indicating total petroleum hydrocarbon (TPH) levels equal to or greater than the action level of 10-parts per million (ppm), a release was reported to NCDEQ on March 6, 2014, and NCDEQ Incident 40323 was subsequently issued for the release condition. Procedural details of the 1985 closure and removal of the two (2) 500-gallon gasoline UST systems are reportedly undocumented and unknown. Disposal details concerning the UST systems, tank contents, soils, and/or other residual materials are reportedly undocumented and unknown. The release is believed to have occurred over an extended period, prior to 1985. 3.5 Site Characteristics The subject commercial property, zoned for Neighborhood Business (B-N) use, includes two (2) parcels, with Lincoln County Parcel Identification Number (PIN) 53015 and 30063, occupying a total area of approximately 0.95-acre. Site improvements include an approximately 6,000-square feet, single story, slab-on-grade building, with limited concrete paving along the building’s front face, additional gravel-surfaced drives and parking areas, limited asphalt paving, and appurtenances. The onsite building is situated on the eastern parcel, while the western parcel, where the subject former tank basin is located, is occupied by a gravel-surfaced parking lot. The onsite building was formerly a fire station utilized by the previous property owner, East Lincoln Fire Department, and the entire site is currently occupied by Norman Tire & Auto, a retail and service business. The site is situated in an unincorporated area of Lincoln County, in the southeastern quadrant of the intersection of NC Highway 73 and South Pilot Knob Road, both of which are two (2)-lane, asphalt surfaced, rural section roadways, with additional turn lanes at the referenced intersection. The subject site is served by electrical and natural gas public utilities, as well as water distribution service provided by Lincoln County. The site is currently served by an onsite septic system, with no county sewer system service. 7 CES Project No. 7604.0321ED November 30, 2023 The subject site is situated in an area of mixed commercial, agricultural, and low-density single- family residential land use. Adjacent down-gradient land to the south and east of the site is an approximately 45-acre tract that is undeveloped, except for a single-family residence that is currently unoccupied. The site location in relation to area land use is illustrated in Figures 1 and 2. 3.6 Affected Property Owners and Occupants The subject property (i.e., Lincoln County PIN 53015 and 30063) where the contamination was discovered, and where the reported source area of the contaminated plume has come to be located is currently owned by Tim Norman, who owns and operates Norman Tire & Auto on these two (2) adjoining parcels. An adjoining, and downgradient property (i.e., Lincoln County PIN 32896) to the south of the subject property, where the contaminant plume has been documented to have migrated, is currently owned by Chastain Terry Napier (Nixon Family). Currently available information concerning Affected Property Owners and Occupants and Land Use are summarized in Tables B-6 and B-10, respectively. 3.7 Receptor Information Water Supply Wells: Three (3) confirmed active drinking water supply wells, including two (2) inactive wells, were identified within 1,000-feet of the subject site during initial site assessment activities. In July 2014, samples were collected from the three (3) active drinking water supply wells, identified as SW-1, SW-2, and SW-3, with historical analytical results presented in Table B-4C. A review of the analytical results for these active water supply wells by an NCDEQ Environmental Toxicologist in July 2014 resulted in a finding that no detected contaminants exceed applicable water standards, and no use restrictions were recommended. The two (2) inactive water supply wells have reportedly not been in use for more than 20 years and could not be sampled by conventional procedures in July 2014. One (1) additional active drinking water supply well was identified within 1,500-feet from the site and was not sampled in July 2014. On May 26, 2016, one (1) of the inactive private wells, located approximately 270-feet downgradient of the site at 133 S. Pilot Knob Road (identified as Well #5, PIN 32896, Owner: Bernice Nixon on Figure 3 and Table B-5), was abandoned by Carolina Soil Investigations, Inc. In June 2017, samples were collected from four (4) active drinking water supply wells, identified as SW-1, SW-2, SW-3, and SW-4, and reported concentrations relatively consistent with the results from the July 2014 event. Additionally, in March 2018, a sample collected from a newly installed drinking water supply well, identified as SW-7 and located approximately 1,220-feet downgradient of the contaminant plume, reported concentrations of chloroform (1.0 ug/l) and tetrachloroethylene (1.6 ug/l) above laboratory method detection limits. A review of historical water supply well results indicate that the concentrations reported from water supply well SW-7 in March 2018 are relatively consistent with concentrations reported from water supply wells SW-1, SW-3, and/or SW-4. Active drinking water supply wells (WSW-1, WSW-3, WSW-4, WSW-7) are scheduled to be sampled in late November 2023, with the results being provided to Mr. Chris Clark of the Inactive Hazardous Waste Section of NCDEQ, with a copy of the results to be provided to the UST Section of NCDEQ. 8 CES Project No. 7604.0321ED November 30, 2023 A summary of historical water supply well analytical results dating back to June 2014 are included in Tables B-4B. Specific information concerning each of the water supply wells within 1,500-feet from the site is presented in Table B-5. Corresponding supply well locations are depicted on Figure 1. Public Water Supplies: No public water supplies were identified within 1,500-feet of the subject site. The Lincoln County public water distribution system is available at the site. Surface Water: No surface water bodies were identified within 500-feet of the site. Wellhead Protection Areas: Per the NCDEQ website, no wellhead protection areas are in Lincoln County. Deep Aquifers in the Coastal Plain Physiographic Region: Not applicable to the subject site. Subsurface Structures: Underground utilities have been identified at and adjacent to the subject site, and soil contamination may be in contact with these underground utilities. Groundwater has historically been measured at approximately 10 to 25-feet below ground surface (bgs) at the site. Because the underground utilities are expected to be at a substantially shallower depth than 10-feet, the utility lines would not be considered receptors or conduits for ground water contaminant migration. No subsurface structures have been identified at the site. 3.8 Remedial Plan Implementation A CAP – ROD, summarizing the objectives, schedules, and milestones to track cleanup progress for the AS/SVE system proposed in the CAP – CA Design has been approved, and CES is currently working with remedial subcontractors and vendors to revise costs, schedules, and timelines after noted delays in the approval process. 3.9 Remediation Progress Upon planned implementation of the proposed AS/SVE remedial system, progress of remediation will be reported in future monitoring reports. 9 CES Project No. 7604.0321ED November 30, 2023 4.0 CURRENT SITE ASSESSMENT INFORMATION 4.1 Water Level and Free Product Thickness Measurements During this groundwater monitoring and sampling period, depth to groundwater (DTW) measurements were collected from monitoring wells MW-101, MW-103, MW-104, MW-201, MW- 202, MW-203, MW-301, MW-303, MW-401, MW-402, and MW-501 on September 26, 2023. Depth to groundwater was measured and recorded utilizing a water level meter capable of detecting LNAPL or free product to an accuracy of 0.01-feet. Free product was not detected in any site related monitoring wells. After measuring DTW at each monitoring well, the water level meters were decontaminated by using a soapy water mixture (alconox and water). Depth to groundwater September 26, 2023, ranged from 19.29-feet below top of casing (TOC) in monitoring well MW-203 to 22.03-feet below TOC in monitoring well MW-501. A summary of historical DTW measurements is included on Table B-9. 4.2 Groundwater Monitoring Event After calculating the volume of water to be removed from the above referenced monitoring wells, dedicated 1.5-inch disposable bailers were used to purge approximately three to five well volumes from each monitoring well. Groundwater samples were then collected, placed on ice, and hand delivered under chain of custody (COC) procedures to Waypoint Analytical (Waypoint), of Charlotte, North Carolina, for analysis of volatile organic compounds (VOCs) by the U.S. Environmental Protection Agency (EPA) Method 6200B and volatile petroleum hydrocarbons (VPH) by Massachusetts Department of Environmental Protection (MADEP) methodologies. 4.3 Surface Water Monitoring Event Not applicable. No surface water monitoring events were conducted during this groundwater monitoring and sampling period. 4.4 Soil Monitoring Events Not applicable. No soil monitoring events were conducted during this groundwater monitoring and sampling period. 4.5 Summary of Soil, Groundwater, Surface Water and Free Product Assessment Information Petroleum hydrocarbon constituents were reported above the 2L Standards in monitoring wells MW-101, MW-103, MW-104, MW-301, MW-401, and MW-501. Petroleum hydrocarbon constituents, including site concentration levels, were reported above the GCL from the following monitoring wells during this monitoring and sampling period:  MW-101: benzene (24,000 ug/l), 1,2-dibromoethane (818 ug/l) and 1,2-dichloroethane (1,690 ug/l). 10 CES Project No. 7604.0321ED November 30, 2023  MW-104: benzene (24,100 ug/l) and 1,2-dibromoethane (445 ug/l).  MW-301: benzene (6,820 ug/l).  MW-401: benzene (8,510 ug/l) and 1,2-dibromoethane (93.1 ug/l). A groundwater elevation plan for the September 26, 2023, groundwater monitoring and sampling event is included as Figure 3. A benzene isoconcentration plan for the September 26, 2023, groundwater monitoring and sampling event is included as Figure 4. A summary of historical groundwater analytical results dating back to June 2014 are included in Table B-4B. Copies of groundwater laboratory analytical reports are included as Appendix A. 4.6 Site Geology and Hydrogeology Underlying rock stratigraphy near the subject site is of the Paleozoic era, the Ordovian system, and the Lower Paleozoic granitic rocks series. The area's predominant surficial soil component is identified as Gaston, having the texture of a sandy clay loam. Gaston soils reportedly have moderately fine or fine textures and slow infiltration rates. While the corrosion potential of site soils is reported to be high, Gaston soils do not meet the requirements for classification as a hydric soil. Other surficial and deeper soil types that may be expected to be found near the subject site are generally classified as sandy loam, clay, loam, gravelly sandy loam, and fine sandy loam. Site specific soils noted during the monitoring well installations at the site have consisted of mostly Silt and Silty Clays from grade to approximately 30-feet bgs. Deeper soils observed during the installation of two (2) Type III monitoring wells in the immediate vicinity of the source area were comprised of Silt and Silty Clays to approximately 45-feet bgs, with Partially Weathered Rock around 60-feet bgs and bedrock being encountered at 95-feet bgs. Based upon top of casing and groundwater surface elevations, as measured in onsite and offsite monitoring wells, and summarized in Table B-9, apparent groundwater movement across the site during this groundwater monitoring and sampling period is in a southeasterly direction, which is consistent with historical groundwater flow directions. A groundwater elevation plan for the September 26, 2023, groundwater monitoring and sampling event, depicting the groundwater elevations and flow direction, is presented as Figure 3. 4.7 Evaluation of Soil, Groundwater, Surface Water and Free Product Thickness Information The extent of the petroleum hydrocarbon plume appears to be defined in the northern, eastern, western, and vertical directions. Concentrations of the contaminants of concern appear to be generally reducing in the southern direction, yet petroleum hydrocarbon detections beyond the natural gas pipeline easement, in MW-501 (previously above GCLs and currently above 2L Standards), indicate that the southern extent of the plume has not been reached. Further soil sampling and laboratory analysis would be necessary to evaluate the extent of petroleum hydrocarbons in soil. In accordance with recent NCDEQ correspondences, upon completion and implementation of the CAP, additional downgradient monitoring wells, located beyond the natural gas pipeline and monitoring well MW-501, may be installed to evaluate the southern extent of the contaminant plume. Free product was not detected in any of the onsite groundwater monitoring wells. 11 CES Project No. 7604.0321ED November 30, 2023 The data obtained and reported herein is representative of conditions only at the referenced boring and monitoring well locations and is not necessarily indicative of conditions elsewhere on the subject or adjacent properties. During the groundwater monitoring and sampling of all offsite monitoring wells, access agreements previously executed with the adjacent property owners were utilized. 4.8 Soil and Groundwater Remediation No soil and/or groundwater remediation activities were conducted during this groundwater monitoring and sampling event. 12 CES Project No. 7604.0321ED November 30, 2023 5.0 CONCLUSIONS AND RECOMMENDATIONS 5.1 Conclusions Since the submission of the GW Report, dated April 22, 2022, one groundwater monitoring and sampling event has been conducted at the site to monitor groundwater concentrations and trends. Active drinking water supply wells (WSW-1, WSW-3, WSW-4, WSW-7) are scheduled to be sampled in late November 2023, with the results being provided to Mr. Chris Clark of the Inactive Hazardous Waste Section of NCDEQ, with a copy of the results to be provided to the UST Section of NCDEQ. During this September 26, 2023, groundwater monitoring and sampling event, petroleum hydrocarbon constituents were reported above the 2L Standards in monitoring wells MW-101, MW- 103, MW-104, MW-301, MW-401, and MW-501. Petroleum hydrocarbon constituents were reported above GCL in monitoring wells MW-101, MW-104, MW-301 and MW-401, with maximum site concentration levels of 24,100 ug/l (benzene in MW-104), 818 ug/l (1,2-dibromoethane in MW-101), and 1,690 ug/l (1,2-dichloroethane in MW-101). Free product was not detected in any of the onsite groundwater monitoring wells. Groundwater laboratory results from this September 26, 2023, groundwater monitoring and sampling event are relatively consistent with historical results, and indicate that the contaminant plume is stable, not expanding, but exhibiting continued migration along the calculated groundwater flow direction to the south (MW-501). A review of groundwater analytical results from monitoring well MW-501 indicates that the southern extent of the contaminant plume has not been reached, based on petroleum hydrocarbon constituents remaining above 2L Standards and previously above GCLs. 5.2 Recommendations Based upon groundwater concentration levels reported above GCLs, and the High-Risk classification, it is recommended that groundwater and drinking water supply well monitoring activities continue on a semi-annual to annual basis, until the remedial strategy under the recently approved CAP is implemented. In accordance with recent NCDEQ correspondences, upon completion and implementation of the CAP, additional downgradient monitoring wells, located beyond the natural gas pipeline easement and monitoring well MW-501, may be installed to evaluate the southern extent of the contaminant plume. Additionally, based on a defined linear contaminant plume, historical groundwater flow direction to the southeast, the previous abandonment of water supply well (WSW-5) located on the adjacent property to the south- southwest, and during recent conversations with NCDEQ representatives, reclassification of the Site from High-Risk to Low-Risk will be evaluated upon implementation and operation of the AS/SVE remedial system. During the proposed semi-annual to annual groundwater sampling events, monitoring wells located within the GCL plume, and immediately up gradient (i.e., monitoring wells MW-103 and/or MW-303), cross gradient (i.e., monitoring wells MW-201, MW-203 through MW-206, MW-302 and/or MW-305) and down gradient (i.e., monitoring well MW-501) should be analyzed for petroleum hydrocarbon constituents. 13 CES Project No. 7604.0321ED November 30, 2023 As previously reported in Groundwater Monitoring Reports and the CA Design, if modifications to the AS/SVE remedial system are required based on final NCDOT design and/or construction plans associated with NC Highway 73 Project (STIP: R-5721/U-5765), which currently includes the preliminary design of a turn-lane over a portion of the source area, NCDEQ representatives will be contacted to discuss the proposed changes and potential impacts to the operation of the remedial system. FIGURES ^_ !(!( !( !( !( !( OUTLET RISER BERM STORMWATER DETENTION POND OUTFALL #001 TRUCKWASH OUT JUNCTION BOX LAB 1000 GAL.HIGHWAYDIESEL TANK 550 GAL.OFF-ROADDIESEL TANK OIL STORAGEBUILDING CEMENT SILO FLY ASH SILO OFFICE ENTRANCE SAND AND AGGREGATESTORAGE CEMENT SILO BOX SHOP TRUCK MAINTENANCE AREAMANHOLE SHOP SITE LOCATION 4602 8 2 0 9 1 7 4602 8 2 0 8 7 6 4602 8 2 0 9 1 7 4602 7 3 9 3 0 5 46027239704602723614 460 2 6 2 4 6 4 8 460 2 6 2 2 7 9 6 4602 6 2 4 6 4 8 4602 6 2 6 5 1 5 4602721 3 6 9 4602723 6 1 4 4602 7 2 1 3 6 9 460 2 6 2 9 4 5 7 4602 7 0 2 9 0 7 4602 7 0 3 3 2 7 4602 7 0 2 9 0 7 4602 7 0 0 7 2 3 4602 7 0 2 9 0 7 4602 6 0 8 9 1 8 4602 7 0 2 9 0 7 4602 7 1 4 3 9 5 4602 7 0 2 9 0 7 4602 7 1 4 3 9 5 460 2 7 0 2 9 0 7 460 2 7 1 4 3 9 5 46 0 2 7 0 2 9 0 7 46 0 2 7 1 4 3 9 5 460 2 6 1 4 6 8 8 460 2 6 1 6 7 2 1 460 2 6 1 4 6 8 8 46 0 2 6 1 2 6 4 7 460 2 6 1 5 2 2 8 460 2 6 1 2 2 4 0 4602615 2 2 8 4602608 9 1 8 460 2 9 0 6 4 5 0 46 0 2 9 0 8 4 3 4 46029 0 6 4 5 0 46029 1 2 3 9 5 46027 2 9 8 4 6 46027 3 9 3 0 5 460 2 7 2 3 6 1 4 4602 6 3 4 2 1 4 4602911 1 0 746029102 4 7 46029 1 1 1 0 7 46029 1 1 0 7 6 460 2 6 2 2 7 9 6 460 2 6 2 1 9 0 7 46 0 2 8 1 3 2 6 1 46 0 2 8 1 4 2 6 0 4602813261 4602714395 46 0 2 8 1 4 7 5 2 46 0 2 8 1 5 6 5 1 46 0 2 8 1 4 7 5 2 46 0 2 8 1 3 7 6 3 46 0 2 8 1 6 6 6 7 46 0 2 8 1 7 6 7 5 46 0 2 8 1 6 6 6 7 46 0 2 8 1 5 6 5 1 4602828 0 9 0 4602935 1 3 5 4602 8 2 8 0 9 0 4602 9 2 8 9 2 2 46028 2 8 0 9 0 4612 0 0 0 4 1 7 46 0 2 8 2 8 0 9 0 46 0 2 7 2 8 3 7 3 4602828 0 9 0 4602930 4 1 1460 2 6 2 9 4 5 7 4602 6 2 7 5 8 8 4602714986 4602714395 460 2 8 1 9 5 1 7 460 2 8 1 7 6 7 5 4602 6 1 7 4 5 7 460 2 6 1 8 5 5 8 46 0 2 8 1 7 4 8 6 46 0 2 8 1 6 4 2 5 4602 8 0 5 9 7 7 4602 7 1 4 3 9 5 46 0 2 8 1 5 2 2 1 46 0 2 8 1 6 2 1 1 4602725434 4602728373 46 0 2 9 0 8 4 3 4 461 2 0 0 0 4 1 7 46 0 2 9 0 8 4 3 4 46 1 2 0 0 0 4 1 7 4602 5 2 7 7 0 3 460 2 5 2 6 4 0 5 4602 9 3 5 1 3 5 4602 9 2 8 9 2 2 4602 9 3 5 1 3 5 460 2 9 3 0 4 1 1 460 2 6 1 8 5 5 8 460 2 7 1 0 4 7 3 4602911558 4602912478 46 0 2 8 1 2 7 0 6 46 0 2 7 1 4 3 9 5 46 0 2 8 1 9 1 1 8 46 0 2 8 1 7 1 9 9 46027393 0 546027351 6 1 4602 7 3 9 3 0 5 4602 7 3 6 2 6 4 46027393054602736628 460273930 5 460273662 8 46027 3 9 3 0 5 46027 2 8 3 7 3 4602 7 3 9 3 0 5 4602 9 3 0 4 1 1 460291239 5460291247 8 46027 3 5 1 6 1 4602 7 3 6 2 6 4 460 2 5 1 7 9 1 9 460 2 5 2 8 3 9 0 46026 2 5 3 4 1 46026 2 5 0 5 3 460262 5 3 4 1 460262 1 1 3 4 460 2 6 2 5 3 4 1 4602 7 2 0 0 0 5 460 2 6 2 5 0 5 3 460 2 6 2 1 1 3 4 460262 1 6 1 1460262 1 1 3 4 46026 1 8 9 5 1 46027 2 0 0 0 5 460 2 6 2 1 1 3 4 46 0 2 5 2 8 3 9 0 46026211344602612647 46029029 1 146029110 7 6 46029029 1 1 46029027 8 8 46 0 2 5 2 8 3 9 0 46 0 2 5 2 6 4 0 5 4602703 3 2 74602700 7 2 3 46028 0 8 8 6 8 46028 0 8 5 8 3 46026122404602614017 4602700 7 2 34602608 9 1 8 46027 0 0 7 2 3 46026 0 8 7 0 7 46026 0 8 9 1 8 46026 0 8 7 0 7 4602638558 4602634214 460 2 8 2 2 7 9 3 460 2 9 3 0 4 1 1 46027 2 8 3 7 3 46029 3 0 4 1 1 46027 2 8 3 7 3 46029 3 0 4 1 1 4602710623 4602714395 4602 7 1 0 6 2 3 4602 7 1 1 7 6 9 4602714395 460 2 7 1 1 7 6 9 4602 6 2 6 5 1 5 4602627588 46026 2 1 9 0 7 46026 3 4 2 1 4 4602627588 4602634214 BRENTWOODRD SEDGEBROOKDR BAXLEYLN GLENCRESTDR BLUFFPOINTLN WATERSIDECROSSINGBLVD KILL I A N F A R M R D OTTS CIR AU S T I N L N PILOTCOVE CT NC 73 HWY PILOTKNOB RD Drawn on: 11/2/2023 Drawn by: Amy Schmidt Reviewed by: Matthew Sumner 3525 Whitehall Park DriveSuite 150Charlotte, North Carolina 28273T: 704-489-1500www.ces-group.net³ 0 150 300 450 60075 FEET Legend ^_Site Location 500' Radius 1,000' Radius 1,500' Radius Parcels !(Water Supply Wells - Active !(Water Supply Wells - Inactive REFERENCE:ESRI Maxar Vivid Advanced Charlotte, United States aerial orthoimagery dated2022. Parcel data and street data obtained from NC OneMap and Lincoln County. Fi g u r e 1 1, 5 0 0 - F T R a d i u s M a p Fo r m e r E a s t L i n c o l n F i r e S t a t i o n P r o p e r t y 76 5 4 N C H i g h w a y 7 3 St a n l e y , L i n c o l n C o u n t y , N o r t h C a r o l i n a CES Project No. 7604.0321ED !( !( Abandoned 05/26/2016) CE S G R O U P en g i n e e r s , L L P . 27 4 N . H w y . 1 6 , SU I T E 3 0 0 DE N V E R , N C 2 8 0 3 7 (7 0 4 ) 4 8 9 - 1 5 0 0 FR R M : F - 1 2 4 0 CE S G R O U P en g i n e e r s , L L P . 27 4 N . H w y . 1 6 , SU I T E 3 0 0 DE N V E R , N C 2 8 0 3 7 (7 0 4 ) 4 8 9 - 1 5 0 0 FR R M : F - 1 2 4 0 CE S G R O U P en g i n e e r s , L L P . 27 4 N . H w y . 1 6 , SU I T E 3 0 0 DE N V E R , N C 2 8 0 3 7 (7 0 4 ) 4 8 9 - 1 5 0 0 FR R M : F - 1 2 4 0 TABLES Table B-1: Site History – UST/AST System and Other Release Information Revision Date: 10/30/2023 Incident Number and Name: Incident No. 40323; ELFD Facility ID#: N/A Incident Number Material Released Date of Release 40323 Gasoline Unknown *Gasoline (unleaded or leaded), diesel, used oil, waste oil, aviation fuel, etc., or pesticides, non-halogenated or halogenated solvents, etc. **Fiberglass (single- or double-walled), steel (single- or double-walled), steel with FRP (single- or double-walled), steel with liner, other, unknown. ***Currently operational, not in use or temporarily closed (specify date), permanently closed in place (specify date), permanently closed by removal (specify date) No AST or other aboveground vessel or substantial petroleum storage containers are know to have existed for the site. Unleaded Gasoline Leaded Gasoline AST ID Number Current/Last Contents * Previous Contents * Capacity (in gallons) Construction Details **Tank Dimensions Status of AST *** Description of Release Release is expected to have occurred during an extended period of time, prior to 1985. 2 500 Unknown Unknown UST ID Number Unleaded Gasoline 500 Unknown Unknown1Leaded Gasoline Tank DimensionsConstruction Details ** Capacity (in gallons) Previous Contents * Current/Last Contents * Yes (Assumed) Description of Associated Piping and Pumps Was release associated with the UST System? Description of Associated Piping and Pumps Was release associated with the AST System? Status of UST *** Date Tank Installed Unknown Unknown Removed in 1985 Unknown Unknown Removed in 1985 Yes (Assumed) Date Tank Installed Page 1 of 1 Table B-2: Site History - UST/AST Owner/Operator and Other Responsible Party Information Revision Date: 10/30/2023 Incident Number and Name: 40323; ELFD Facility ID#:N/A State Zip NC 28164 State Zip NC 28164 State Zip NC 28164 Street Address 8019 NC Hwy 73 City Telephone Number Name of Operator Dates of Operation (mm/dd/yy to mm/dd/yy) Shelton Duckworth 1969 to 1984 Stanley 704-827-2625 Incident Number 40323 Stanley 704-822-5999 Name of Other Responsible Party Dates of Release(s) (mm/dd/yy to mm/dd/yy) East Lincoln Fire Department Unknown Street Address 406 S Pilot Knob Road City Telephone Number City Telephone Number Stanley 704-827-2625 8019 NC Hwy 73 Street Address Shelton Duckworth 1969 to 1984 UST ID Number 1 2 Facility ID Number Name of Owner Dates of Operation (mm/dd/yy to mm/dd/yy) N/A Table B-4A: September 26, 2023 Groundwater Sampling Results Revision Date: 10/30/23 Incident Number and Name: Incident No. 40323; ELFD Facility ID#: N/A 6010C 6010C 504.1 6200B 6200B 6200B 6200B 6200B 6200B 6200B 6200B 6200B 6200B 6200B 6200B 6200B 6200B 6200B 6200B 6200B 6200B 6200B 6200B 6200B 6200B 6200B 6200B 6200B 6200B 6200B 6200B 6200B 6200B 6200B VPH VPH VPH Well or SW ID Date Collected (m/dd/yy)Sample ID Incident Phase MW-101 9/26/23 MW-101 CAP NA NA NA BDL BDL 2360 818 1690 577 BDL BDL 24000 BDL BDL BDL BDL 2770 BDL 79.9 11700 BDL 1140 BDL 938 1240 26.9 J 249 5510 BDL 29.0 J BDL 34900 BDL 17200 82500 33800 5720 MW-103 9/26/23 MW-103 CAP NA NA NA BDL BDL 444 BDL BDL 78.2 BDL BDL 3120 BDL BDL BDL BDL 520 BDL 45.4 J 848 BDL BDL BDL BDL BDL 34 J 169 492 BDL BDL BDL 1320 BDL 1340 7800 5040 2000 MW-104 9/26/23 MW-104 CAP NA NA NA BDL BDL 1980 445 207 486 BDL BDL 24100 BDL BDL BDL BDL 2300 326 64.9 10100 BDL 2790 BDL BDL 1150 BDL 178 4780 BDL 140 BDL 39400 BDL 14900 99600 32600 5310 MW-201 9/26/23 MW-104 CAP NA NA NA BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL MW-202 9/26/23 MW-202 CAP NA NA NA BDL BDL 2520 27.7 J BDL 642 BDL BDL 7460 BDL BDL BDL BDL 2990 BDL 92.9 11400 BDL BDL BDL BDL 1260 28.1 J 286 5230 BDL 256 BDL 33100 BDL 16600 68400 34800 6170 MW-203 9/26/23 MW-203 CAP NA NA NA BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL 0.300 J BDL BDL BDL BDL BDL MW-301 9/26/23 MW-301 CAP NA NA NA BDL BDL 2150 31.9 J BDL 537 BDL BDL 6820 BDL BDL BDL BDL 2710 BDL 89.6 10200 BDL 795 BDL BDL 1200 BDL 238 4950 BDL 28.2 J BDL 28400 BDL 15200 61000 34800 5910 MW-303 9/26/23 MW-303 CAP NA NA NA BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL MW-401 9/26/23 MW-401 CAP NA NA NA BDL BDL 2630 93.1 BDL 660 BDL 3580 8510 BDL BDL BDL BDL 3380 BDL 110 12800 BDL 1780 BDL BDL 1240 BDL 298 5890 BDL BDL BDL 28200 BDL 18700 57800 40500 5970 MW-402 9/26/23 MW-402 CAP NA NA NA BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL MW-501 9/26/23 MW-501 CAP NA NA NA BDL BDL 2800 BDL BDL 761 BDL BDL 440 BDL BDL BDL BDL 1940 BDL 86.2 9430 BDL BDL BDL BDL 1210 BDL 209 4210 BDL 55.5 BDL 5770 BDL 13600 13800 3550 7840 0.01 0.005 1.3 0.5 5.1 10 10 10 10 10 200 100 6.2 0.5 0.5 8.1 10 10 10 200 20 1000 20 20 20 10 10 100 10 10 0.5 100 50 300 1000 1000 1000 700 15 0.02 350 NA 400 0.02 0.4 400 25 6000 1 NA 70 3 0.4 600 70 70 500 40 400 100 20 6 70 70 500 70 70 0.7 600 0.03 500 400 700 200 700000 15000 50 350000 NA 28500 50 400 24100 11700 6000000 5000 NA 70000 3000 400 80000 70000 30500 85500 40000 4000000 100000 20000 6000 5900 26100 85500 8800 70000 700 260000 30 85500 NA NA NA µg/l =micrograms per liter Aa, Ab, Ac, Ad, Ae: Analyte reported with possible high bias GCL = gross contamination level J: Detected but below the Reporting Limit; therefore, result is an estimated concentration BDL = Below Laboratory Detection Limit NA = Not Applicable Bold = Values exceeding the 2L Standard Highlighted Bold = Values exceeding GCLs 1,3 , 5 - T r i m e t h y l b e n z e n e 1,1 - D i c h l o r o e t h y l e n e 1,1 - D i c h l o r o p r o p y l e n e 1,2 , 4 - T r i m e t h y l b e n z e n e 1,2 - D i b r o m o e t h a n e 1.2 - D i c h l o r o e t h a n e Analytical Method (e.g., VOC by EPA 8260)  Contaminant of Concern (ug/L)  Bar i u m Le a d 1,2 - D i b r o m o e t h a n e ( E D B ) C9 - C 1 2 A l i p h a t i c s C9 - C 1 0 A r o m a t i c s Minimum Reporting Limit (ug/L) 2L Standard (ug/L) GCL (ug/L) sec - B u t y l b e n z e n e Sty r e n e Tet r a c h l o r o e t h y l e n e To l u e n e Vin y l C h l o r i d e Xy l e n e s , t o t a l Me t h y l I s o b u t y l K e t o n e Me t h y l - t e r t - B u t y l E t h e r Na p h t h a l e n e Met h y l E t h y l K e t o n e ( M E K ) Ac e t o n e n- B u t y l b e n z e n e n-P r o p y l b e n z e n e o-X y l e n e C5 - C 8 A l i p h a t i c s Ben z e n e Bro m o d i c h l o r o m e t h a n e Ch l o r o f o r m Ch l o r o m e t h a n e Dib r o m o c h l o r o m e t h a n e Eth y l b e n z e n e Iso p r o p y l E t h e r Is o p r o p y l b e n z e n e m,p - X y l e n e s Me t h y l B u t y l K e t o n e 4- I s o p r o p y l t o l u e n e Page 1 of 1 Table B-4B: Summary of Historical Groundwater Sampling ResultsRevision Date: 10/30/23 Incident Number and Name: Incident No. 40323; ELFD Facility ID#: N/A 6010C 6010C 504.1 6200B 6200B 6200B 6200B 6200B 6200B 6200B 6200B 6200B 6200B 6200B 6200B 6200B 6200B 6200B 6200B 6200B 6200B 6200B 6200B 6200B 6200B 6200B 6200B 6200B 6200B 6200B 6200B 6200B 6200B 6200B VPH VPH VPH Well or SW ID Date Collected (m/dd/yy)Sample ID Incident Phase MW-101 6/30/14 MW-101 LSA 84 9.9 NA BDL BDL 1900 1100 2200 460 38 6500 31000 BDL BDL BDL BDL 2300 3600 76 8100 360 2700 370 1500 940 12 220 4000 41 76 BDL 40000 BDL 12000 120000 17000 6400 MW-101 6/8/16 MW-101 CAP NA NA 930 BDL BDL 2300 1200 3700 600 BDL 3700 65000 BDL 75 BDL BDL 3600 6500 88 14000 940 2300 540 1300 1100 BDL 290 6700 BDL 79 BDL 98000 BDL 20000 170000 40000 8300 MW-101 6/29/17 MW-101 CAP NA NA 740 BDL BDL 1900 970 1900 490 BDL 1500 25000 BDL BDL BDL BDL 2500 3000 72 9900 770 1200 350 750 860 BDL 200 4700 BDL 53 BDL 37000 BDL 15000 120000 38000 7500 MW-101 2/28/18 MW-101 CAP NA NA NA BDL BDL 1700 1100 2500 540 BDL 1800 27000 BDL BDL BDL BDL 2800 4200 280 11000 720 1600 400 1100 870 BDL 340 5000 BDL 170 BDL 41000 BDL 16000 110000 84000 8400 MW-101 1/18/19 MW-101 CAP NA NA NA BDL BDL 2200 950 2000 580 BDL 2000 34000 BDL BDL BDL BDL 3400 3600 84 12000 1100 1400 490 620 1000 BDL 260 5800 BDL 51 BDL 46000 BDL 18000 110000 40000 6300 MW-101 10/3/19 MW-101 CAP NA NA NA BDL BDL 2000 920 2100 400 3.7 J 2600 26000 BDL BDL BDL BDL 2800 3600 62 11000 810 1400 380 880 840 14 190 5000 6.9 38 BDL 34000 BDL 16000 130000 41000 6500 MW-101 6/8/20 MW-101 CAP NA NA NA BDL BDL 2000 800 2300 500 BDL 3600 20000 BDL BDL BDL BDL 2100 4200 57 10000 750 1300 290 1400 870 BDL 190 4700 BDL 34 J BDL 29000 BDL 15000 110000 38000 8200 MW-101 1/22/21 MW-101 CAP NA NA NA BDL BDL 2600 960 2700 700 BDL 3700 20000 BDL BDL BDL BDL 2600 4500 100 11000 850 1900 320 1500 1400 22 J 270 5600 BDL 30 J BDL 30000 BDL 17000 95000 40000 5900 MW-101 9/23/21 MW-101 CAP NA NA NA BDL BDL 2030 805 1500 505 BDL 1030 25700 32.8 J BDL BDL BDL 2850 2940 75.4 9950 899 1380 326 720 1030 BDL 224 4940 BDL 37 J BDL 36600 BDL 14900 94400 31800 6170 MW-101 3/18/22 MW-101 CAP NA NA NA BDL BDL 1650 526 1210 406 BDL BDL 24100 BDL BDL BDL BDL 2770 BDL 62.6 10500 BDL 1210 BDL 577 804 BDL 192 4800 BDL 31.6 J BDL 38300 BDL 15300 90000 29900 5960 MW-101 9/26/23 MW-101 CAP NA NA NA BDL BDL 2360 818 1690 577 BDL BDL 2400 BDL BDL BDL BDL 2770 BDL 79.9 11700 BDL 1140 BDL 938 1240 26.9 J 249 5510 BDL 29.0 J BDL 34900 BDL 17200 82500 33800 5720 MW-102 6/30/14 MW-102 LSA 53 BDL NA BDL BDL 1800 21 13 520 39 2000 3500 BDL BDL BDL BDL 1900 11 91 6700 750 3000 780 BDL 600 56 260 2500 43 BDL BDL 11000 BDL 9200 23000 12000 6600 MW-102 6/6/16 MW-102 CAP NA NA 16 BDL BDL 1700 21 BDL 390 BDL 1400 3300 BDL BDL BDL BDL 1600 11 60 5200 1500 1600 640 BDL 280 38 180 2200 8 BDL BDL 11000 BDL 7400 37000 16000 6400 MW-102 12/7/16 MW-102 CAP NA NA NA BDL BDL 2600 38 17 610 9.6 2000 4000 BDL BDL BDL BDL 2300 13 100 8100 680 3800 610 BDL 750 BDL 310 3300 15 BDL BDL 12000 BDL 11000 NA NA NA MW-102 6/29/17 MW-102 CAP NA NA 47 BDL BDL 2100 56 27 470 6.5 2500 6900 BDL BDL BDL BDL 2400 22 73 8400 1200 2400 500 BDL 630 17 220 3700 9.5 BDL BDL 23000 BDL 12000 61000 32000 7500 MW-102 2/15/19 MW-102 CAP NA NA NA BDL BDL 1900 BDL 50 550 BDL 3700 9300 BDL BDL BDL BDL 2900 36 J 180 10000 1400 3500 710 BDL 1000 29 J 260 3600 110 BDL BDL 28000 BDL 14000 67000 38000 7100 MW-102 10/3/19 MW-102 CAP NA NA NA BDL BDL 2500 32 20 590 7.5 2000 5000 BDL BDL BDL BDL 2200 18 95 7800 1500 2300 710 BDL 690 27 310 3100 13 BDL BDL 13000 BDL 1100 45000 35000 9200 MW-103 8/21/14 MW-103 LSA 27 BDL NA BDL BDL 1200 BDL BDL 460 BDL 660 6700 BDL BDL BDL BDL 930 BDL 270 2800 670 BDL 650 BDL BDL BDL 320 960 BDL BDL BDL 7900 BDL 3800 25000 5800 7700 MW-103 6/8/16 MW-103 CAP NA NA BDL BDL BDL 1200 BDL 23 380 BDL BDL 7200 BDL BDL BDL BDL 910 40 69 3400 770 BDL 550 BDL 17 39 260 1200 14 BDL BDL 9800 BDL 4500 35000 15000 7900 MW-103 6/29/17 MW-103 CAP NA NA BDL BDL BDL 480 12 BDL 83 7 BDL 3700 BDL BDL BDL BDL 450 20 33 1200 130 BDL 96 BDL BDL 47 130 500 10 BDL BDL 4500 BDL 1700 20000 4700 3600 MW-103 2/28/18 MW-103 CAP NA NA NA BDL BDL 180 BDL 42 110 BDL BDL 2300 BDL BDL BDL BDL 170 91 32 520 30 BDL 36 BDL 9 J BDL 54 550 BDL BDL BDL 1900 BDL 1100 9000 8400 2900 MW-103 1/18/19 MW-103 CAP NA NA NA BDL BDL 170 BDL 50 86 3.8 J 140 3500 BDL BDL BDL BDL 260 110 18 560 40 BDL BDL BDL BDL 9.7 59 610 5.8 BDL BDL 2600 BDL 1200 11000 5300 1800 MW-103 10/3/19 MW-103 CAP NA NA NA BDL BDL 610 BDL 47 180 6.5 620 4300 BDL BDL BDL BDL 630 110 44 1500 490 260 330 BDL 14 22 160 970 10 BDL BDL 4500 BDL 2500 21000 8800 3700 MW-103 6/8/20 MW-103 CAP NA NA NA BDL BDL 470 BDL BDL 150 BDL BDL 4600 BDL BDL BDL BDL 650 130 39 J 1200 360 BDL 300 BDL BDL BDL 150 960 BDL BDL BDL 4100 BDL 2200 18000 7200 2500 MW-103 1/22/21 MW-103 CAP NA NA NA BDL BDL 700 BDL BDL 160 BDL 260 J 4400 BDL BDL BDL BDL 720 100 54 1500 370 BDL 250 BDL BDL 28 J 200 950 BDL BDL BDL 4200 BDL 2400 14000 8100 2100 MW-103 9/23/21 MW-103 CAP NA NA NA BDL BDL 5230 BDL 258 1150 76 905 J 31500 49.1 J BDL BDL BDL 4940 581 451 9550 2080 1190 1660 BDL 82.9 272 J 1560 6860 126 BDL BDL 27600 BDL 16400 10500 6040 2580 MW-103 3/18/22 MW-103 CAP NA NA NA BDL BDL 157 BDL 24.2 64.4 3.33 J BDL 1660 BDL BDL BDL BDL 152 BDL 12.7 368 BDL BDL BDL BDL 9.92 J 9.04 42.2 398 4.50 J BDL BDL 1210 BDL 766 5840 3390 785 MW-103 9/26/23 MW-103 CAP NA NA NA BDL BDL 444 BDL BDL 78.2 BDL BDL 3120 BDL BDL BDL BDL 520 BDL 45.4 J 848 BDL BDL BDL BDL BDL 34 J 169 492 BDL BDL BDL 1320 BDL 1340 7800 5040 2000 0.01 0.005 1.3 0.5 5.1 10 10 10 10 10 200 100 6.2 0.5 0.5 8.1 10 10 10 200 20 1000 20 20 20 10 10 100 10 10 0.5 100 50 300 1000 1000 1000 700 15 0.02 350 NA 400 0.02 0.4 400 25 6000 1 NA 70 3 NA 600 70 70 500 40 4000 100 20 6 70 70 500 70 70 0.7 600 0.03 500 400 700 200 700000 15000 50 350000 NA 28500 50 400 25000 11700 6000000 5000 NA 70000 3000 NA 84500 70000 25000 85500 40000 4000000 100000 20000 6000 6900 30000 85500 8500 70000 700 260000 30 85500 NA NA NA µg/l =micrograms per liter Aa, Ab, Ac, Ad, Ae: Analyte reported with possible high biasGCL = gross contamination level J: Detected but below the Reporting Limit; therefore, result is an estimated concentration BDL = Below Laboratory Detection Limit NA = Not ApplicableBold = Values exceeding the 2L Standard Highlighted Bold = Values exceeding GCLs 1,1 - D i c h l o r o p r o p y l e n e 1,2 , 4 - T r i m e t h y l b e n z e n e 1,2 - D i b r o m o e t h a n e 1.2 - D i c h l o r o e t h a n e 1,3 , 5 - T r i m e t h y l b e n z e n e 4-I s o p r o p y l t o l u e n e Analytical Method (e.g., VOC by EPA 8260)  Contaminant of Concern (ug/L)  Ba r i u m Lea d 1,2 - D i b r o m o e t h a n e 1,1 - D i c h l o r o e t h y l e n e Eth y l b e n z e n e Iso p r o p y l E t h e r Is o p r o p y l b e n z e n e m,p - X y l e n e s Met h y l B u t y l K e t o n e Met h y l E t h y l K e t o n e ( M E K ) Ace t o n e Be n z e n e Br o m o d i c h l o r o m e t h a n e Ch l o r o f o r m Chl o r o m e t h a n e Dib r o m o c h l o r o m e t h a n e C5 - C 8 A l i p h a t i c s C9- C 1 2 A l i p h a t i c s C9- C 1 0 A r o m a t i c s Minimum Reporting Limit (ug/L) 2L Standard (ug/L) GCL (ug/L) se c - B u t y l b e n z e n e Sty r e n e Tet r a c h l o r o e t h y l e n e To l u e n e Vin y l C h l o r i d e Xy l e n e s , t o t a l Met h y l I s o b u t y l K e t o n e Met h y l - t e r t - B u t y l E t h e r Nap h t h a l e n e n-B u t y l b e n z e n e n-P r o p y l b e n z e n e o-X y l e n e Page 1 of 6 Table B-4B: Summary of Historical Groundwater Sampling ResultsRevision Date: 10/30/23 Incident Number and Name: Incident No. 40323; ELFD Facility ID#: N/A 6010C 6010C 504.1 6200B 6200B 6200B 6200B 6200B 6200B 6200B 6200B 6200B 6200B 6200B 6200B 6200B 6200B 6200B 6200B 6200B 6200B 6200B 6200B 6200B 6200B 6200B 6200B 6200B 6200B 6200B 6200B 6200B 6200B 6200B VPH VPH VPH Well or SW ID Date Collected (m/dd/yy) Sample ID Incident Phase MW-104 8/21/14 MW-104 LSA 120 18 NA BDL BDL 1500 1000 420 460 BDL 2200 38000 BDL BDL BDL BDL 2500 740 270 7800 290 1600 290 BDL 890 BDL 290 4100 BDL 420 BDL 43000 BDL 12000 120000 27000 5800 MW-104 6/6/16 MW-104 CAP NA NA 600 BDL BDL 1700 700 340 420 BDL 920 J 30000 BDL 50 BDL BDL 2600 530 65 10000 460 1000 230 BDL 390 BDL 200 4400 BDL 150 BDL 40000 BDL 15000 150000 37000 5900 J MW-104 6/29/17 MW-104 CAP NA NA 670 BDL BDL 1800 840 300 470 BDL 1600 26000 BDL BDL BDL BDL 2600 490 67 10000 540 1500 220 BDL 660 BDL 210 4700 BDL 200 BDL 38000 BDL 15000 130000 38000 7000 MW-104 1/18/19 MW-104 CAP NA NA NA BDL BDL 2300 720 360 560 BDL 2400 32000 BDL BDL BDL BDL 2700 590 80 12000 750 2000 340 BDL 970 BDL 260 5300 BDL 180 BDL 44000 BDL 17000 100000 30000 6700 MW-104 10/3/19 MW-104 CAP NA NA NA BDL BDL 1900 650 240 400 4.5 J 1800 29000 BDL BDL BDL BDL 2500 420 60 9400 570 1800 260 BDL 850 14 190 4300 7.9 160 BDL 39000 BDL 14000 99000 36000 7600 MW-104 6/8/20 MW-104 CAP NA NA NA BDL BDL 1800 620 280 450 BDL 1900 24000 BDL BDL BDL BDL 2300 480 63 9500 700 2000 330 BDL 860 BDL 190 4400 BDL 180 BDL 36000 BDL 14000 120000 27000 7800 MW-104 1/22/21 MW-104 CAP NA NA NA BDL BDL 2000 530 270 520 BDL 1400 26000 BDL BDL BDL BDL 2600 440 79 9400 820 2800 420 BDL 1000 BDL 210 4600 BDL 180 BDL 38000 BDL 14000 110000 30000 5500 MW-104 9/23/21 MW-104 CAP NA NA NA BDL BDL 1790 576 217 425 BDL 1330 27500 BDL BDL BDL BDL 2790 373 70.9 9330 1050 2770 426 BDL 826 BDL 209 4500 BDL 211 BDL 39800 BDL 13800 88300 27700 5730 MW-104 3/18/22 MW-104 CAP NA NA NA BDL BDL 1530 458 279 375 BDL BDL 28800 BDL BDL BDL BDL 2540 449 56.1 9650 BDL 3200 BDL BDL 678 BDL 172 4450 BDL 144 BDL 45800 BDL 14100 949 338 53.7 MW-104 9/26/23 MW-104 CAP NA NA NA BDL BDL 1980 445 207 486 BDL BDL 24100 BDL BDL BDL BDL 2300 326 64.9 10100 BDL 2790 BDL BDL 1150 BDL 178 4780 BDL 140 BDL 39400 BDL 14900 99600 32600 5310 MW-201 2/11/15 MW-201 CSA NA NA 2.0 BDL BDL 14 2.2 14 4.5 BDL BDL 310 BDL 0.9 BDL BDL 5.3 2.1 0.81 74 BDL BDL BDL BDL 9.9 BDL 1.1 12 BDL BDL BDL 4.2 BDL 86 800 200 49 MW-201 6/6/16 MW-201 CAP NA NA BDL BDL BDL 7 BDL BDL 4.8 BDL BDL 8.8 BDL 0.92 BDL BDL 9.7 BDL 0.55 30 BDL BDL 1.9 BDL 4.3 BDL 1.2 16 BDL BDL BDL 55 BDL 46 780 170 40 J MW-201 6/29/17 MW-201 CAP NA NA BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL 1.6 BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL MW-201 2/28/18 MW-201 CAP NA NA BDL BDL BDL BDL BDL BDL 1.8 BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL 1.8 BDL BDL BDL BDL BDL BDL BDL 30 J 17 J BDL MW-201 6/8/20 MW-201 CAP NA NA BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL 0.48 J BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL MW-201 1/22/21 MW-201 CAP NA NA NA BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL 5.7 J BDL BDL MW-201 9/23/21 MW-201 CAP NA NA NA BDL BDL 0.269 J BDL BDL 0.278 J BDL BDL BDL BDL 0.541 BDL BDL BDL BDL BDL BDL 6.5 BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL 30.2 J BDL MW-201 3/18/22 MW-104 CAP NA NA NA BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL 0.704 BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL 0.444 J BDL BDL BDL BDL BDL MW-201 9/26/23 MW-104 CAP NA NA NA BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL MW-202 2/11/15 MW-202 CSA NA NA 160 BDL BDL 2100 180 BDL 540 BDL BDL 17000 BDL BDL BDL BDL 2800 BDL 100 9900 160 BDL BDL BDL 940 BDL 290 4300 BDL 320 BDL 29000 BDL 1400 150000 35000 9800 MW-202 6/6/16 MW-202 CAP NA NA 39 BDL BDL 3200 BDL BDL 760 BDL BDL 8400 BDL 51 BDL BDL 4000 BDL 130 17000 BDL BDL BDL BDL 720 BDL 380 6700 BDL 230 BDL 38000 BDL 24000 130000 49000 17000 MW-202 6/29/17 MW-202 CAP NA NA 75 BDL BDL 2300 84 BDL 580 BDL BDL 11000 BDL BDL BDL BDL 3100 BDL 89 11000 120 BDL BDL BDL 760 BDL 270 5400 BDL 360 BDL 40000 BDL 17000 110000 41000 9400 MW-202 2/28/18 MW-202 CAP NA NA NA BDL BDL 2200 150 BDL 670 BDL BDL 13000 BDL BDL BDL BDL 3200 BDL 290 12000 110 BDL 72 J BDL 990 BDL 410 5200 BDL 430 BDL 42000 BDL 17000 97000 82000 9500 MW-202 1/18/19 MW-202 CAP NA NA NA BDL BDL 2200 120 BDL 540 BDL 590 J 14000 BDL BDL BDL BDL 3200 BDL 85 11000 130 320 J 71 J BDL 890 56 280 5200 BDL 340 BDL 44000 BDL 16000 82000 42000 7100 MW-202 10/3/19 MW-202 CAP NA NA NA BDL BDL 2300 33 BDL 550 7.2 550 8500 BDL BDL BDL BDL 3000 BDL 87 11000 98 250 37 BDL 840 25 270 5000 13 250 BDL 35000 BDL 16000 100000 44000 8400 MW-202 1/22/21 MW-202 CAP NA NA NA BDL BDL 2700 32 J BDL 660 BDL 490 J 6400 BDL BDL BDL BDL 2900 BDL 100 10000 110 BDL BDL BDL 950 63 300 4700 BDL 190 BDL 26000 BDL 15000 6400 40000 6200 MW-202 9/23/21 MW-202 CAP NA NA NA BDL BDL 2390 39.1 J BDL 584 BDL 309 7470 BDL BDL BDL BDL 2920 BDL 96 9690 338 J BDL 38.1 J BDL 867 24.9 J 274 4720 BDL 245 BDL 33500 BDL 14400 45900 30600 6370 MW-202 3/18/22 MW-202 CAP NA NA NA BDL BDL 1900 90.7 BDL 460 BDL BDL 11100 BDL BDL BDL BDL 2590 BDL 72.8 9740 BDL 527 BDL BDL 725 20.3 J 226 4370 BDL 235 BDL 32300 BDL 14100 73500 38900 7810 MW-202 9/26/23 MW-202 CAP NA NA NA BDL BDL 2520 27.7 J BDL 642 BDL BDL 7460 BDL BDL BDL BDL 2990 BDL 92.9 11400 BDL BDL BDL BDL 1260 28.1 J 286 5230 BDL 256 BDL 33100 BDL 16600 68400 34800 6170 0.01 0.005 1.3 0.5 5.1 10 10 10 10 10 200 100 6.2 0.5 0.5 8.1 10 10 10 200 20 1000 20 20 20 10 10 100 10 10 0.5 100 50 300 1000 1000 1000 700 15 0.02 350 NA 400 0.02 0.4 400 25 6000 1 NA 70 3 NA 600 70 70 500 40 4000 100 20 6 70 70 500 70 70 0.7 600 0.03 500 400 700 200 700000 15000 50 350000 NA 28500 50 400 25000 11700 6000000 5000 NA 70000 3000 NA 84500 70000 25000 85500 40000 4000000 100000 20000 6000 6900 30000 85500 8500 70000 700 260000 30 85500 NA NA NA µg/l =micrograms per liter Aa, Ab, Ac, Ad, Ae: Analyte reported with possible high bias GCL = gross contamination level J: Detected but below the Reporting Limit; therefore, result is an estimated concentrationBDL = Below Laboratory Detection Limit NA = Not Applicable Bold = Values exceeding the 2L StandardHighlighted Bold = Values exceeding GCLs Analytical Method (e.g., VOC by EPA 8260)  Contaminant of Concern (ug/L)  Bar i u m Le a d C9 - C 1 2 A l i p h a t i c s C9 - C 1 0 A r o m a t i c s Minimum Reporting Limit (ug/L) n-P r o p y l b e n z e n e o-X y l e n e se c - B u t y l b e n z e n e Sty r e n e Te t r a c h l o r o e t h y l e n e To l u e n e Me t h y l B u t y l K e t o n e Me t h y l E t h y l K e t o n e Met h y l I s o b u t y l K e t o n e Met h y l - t e r t - B u t y l E t h e r Na p h t h a l e n e n-B u t y l b e n z e n e Ch l o r o m e t h a n e Dib r o m o c h l o r o m e t h a n e Eth y l b e n z e n e Is o p r o p y l E t h e r Iso p r o p y l b e n z e n e m,p - X y l e n e s 1,3 , 5 - T r i m e t h y l b e n z e n e 4- I s o p r o p y l t o l u e n e Ac e t o n e 2L Standard (ug/L) GCL (ug/L) Vin y l C h l o r i d e Xyl e n e s , t o t a l C5 - C 8 A l i p h a t i c s Ben z e n e Bro m o d i c h l o r o m e t h a n e Ch l o r o f o r m 1,2 - D i b r o m o e t h a n e 1,1 - D i c h l o r o e t h y l e n e 1,1 - D i c h l o r o p r o p y l e n e 1,2 , 4 - T r i m e t h y l b e n z e n e 1,2 - D i b r o m o e t h a n e 1.2 - D i c h l o r o e t h a n e Page 2 of 6 Table B-4B: Summary of Historical Groundwater Sampling ResultsRevision Date: 10/30/23 Incident Number and Name: Incident No. 40323; ELFD Facility ID#: N/A 6010C 6010C 504.1 6200B 6200B 6200B 6200B 6200B 6200B 6200B 6200B 6200B 6200B 6200B 6200B 6200B 6200B 6200B 6200B 6200B 6200B 6200B 6200B 6200B 6200B 6200B 6200B 6200B 6200B 6200B 6200B 6200B 6200B 6200B VPH VPH VPH Well or SW ID Date Collected (m/dd/yy)Sample ID Incident Phase MW-203 2/11/15 MW-203 CSA NA NA 4.5 BDL BDL 59 3.2 2.5 19 BDL BDL 290 BDL BDL BDL BDL 68 BDL 3.1 320 BDL BDL BDL BDL 28 1.6 10 130 0.55 8.5 BDL 970 BDL 440 4700 1300 380 MW-203 6/6/16 MW-204 CAP NA NA 6 BDL BDL 67 5.7 BDL 15 BDL BDL 240 BDL BDL BDL BDL 86 BDL 2.6 280 BDL BDL BDL BDL 14 1.7 7.1 140 BDL 4.8 BDL 1100 BDL 420 3300 1400 290 J MW-203 12/7/16 MW-203 CAP NA NA NA BDL BDL 6.2 BDL BDL 1.8 BDL BDL BDL BDL BDL BDL BDL 1.2 BDL BDL 6.6 BDL BDL BDL BDL 2.2 BDL 0.67 2.8 BDL BDL BDL 1.8 BDL 9.4 NA NA NA MW-203 2/28/18 MW-203 CAP NA NA NA BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL 9.5 J BDL MW-203 6/8/20 MW-203 CAP NA NA NA BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL MW-203 1/22/21 MW-203 CAP NA NA NA BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL MW-203 9/23/21 MW-203 CAP NA NA NA BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL 0.31 J BDL BDL BDL BDL BDL MW-203 3/18/22 MW-203 CAP NA NA NA BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL MW-203 9/26/23 MW-203 CAP NA NA NA BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL 0.300 J BDL BDL BDL BDL BDL MW-204 2/11/15 MW-204 CSA NA NA 2.3 BDL BDL 17 1.9 9.5 3.9 BDL BDL 190 BDL BDL BDL BDL 5.2 1.5 0.90 86 BDL BDL BDL BDL 11 BDL 1.3 10 BDL BDL BDL 2.6 BDL 96 570 230 49 MW-204 10/3/19 MW-204 CSA NA NA NA BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL MW-204 1/22/21 MW-204 CAP NA NA NA BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL MW-204 3/18/22 MW-204 CAP NA NA NA BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL 0.202 J BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL MW-205 2/11/15 MW-205 CSA NA NA 5.4 BDL BDL 36 4.9 24 8.6 BDL BDL 680 BDL BDL BDL BDL 11 3.9 2.2 230 BDL BDL BDL BDL 23 BDL 2.8 21 BDL BDL BDL 5.3 BDL 250 1100 340 91 MW-205 6/6/16 MW-205 CAP NA NA 5.4 BDL BDL 55 3.8 BDL 13 BDL BDL 150 BDL BDL BDL BDL 72 BDL 2.3 230 BDL BDL BDL BDL 12 BDL 6 120 BDL 4.5 BDL 860 BDL 350 2500 1100 200 J MW-205 10/3/19 MW-205 CAP NA NA NA BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL 6.9 J 11 J BDL MW-205 1/26/21 MW-205 CAP NA NA NA BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL MW-206 2/11/15 MW-206 CSA NA NA 14 BDL BDL 47 12 72 12 BDL BDL 1500 BDL BDL BDL BDL 17 17 2.8 340 2.0 BDL BDL BDL 32 BDL 3.9 32 BDL BDL BDL 9.2 BDL 370 3500 480 140 MW-206 6/6/16 MW-206 CAP NA NA 2.6 BDL BDL 60 2.8 BDL 14 BDL BDL 110 BDL BDL BDL BDL 95 0.7 2.3 240 BDL BDL BDL BDL 14 BDL 6.2 120 BDL 2.2 BDL 630 BDL 350 1600 960 200 J MW-206 12/7/16 MW-206 CAP NA NA NA BDL BDL 1.7 BDL BDL 0.61 BDL 1.0E+09 BDL BDL BDL BDL BDL 0.89 BDL BDL 3.2 BDL BDL BDL BDL BDL BDL BDL 1.2 BDL BDL BDL 2.6 BDL 4.4 NA NA NA MW-206 6/29/17 MW-206 CAP NA NA BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL MW-206 1/26/21 MW-206 CAP NA NA NA BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL MW-207 2/11/15 MW-207 CSA NA NA 140 BDL BDL 1000 160 2300 250 BDL BDL 22000 BDL BDL BDL BDL 200 2500 52 3000 100 BDL 120 26 570 BDL 92 370 BDL BDL BDL 94 BDL 3400 69000 9400 3100 MW-207 6/6/16 MW-207 CAP NA NA 65 BDL BDL 320 99 2200 99 BDL BDL 19000 BDL 53 BDL BDL 200 2200 BDL 1400 BDL BDL BDL BDL 170 BDL BDL 210 BDL BDL BDL 180 BDL 1600 48000 6200 2000 J 0.01 0.005 1.3 0.5 5.1 10 10 10 10 10 200 100 6.2 0.5 0.5 8.1 10 10 10 200 20 1000 20 20 20 10 10 100 10 10 0.5 100 50 300 1000 1000 1000 700 15 0.02 350 NA 400 0.02 0.4 400 25 6000 1 NA 70 3 NA 600 70 70 500 40 4000 100 20 6 70 70 500 70 70 0.7 600 0.03 500 400 700 200 700000 15000 50 350000 NA 28500 50 400 25000 11700 6000000 5000 NA 70000 3000 NA 84500 70000 25000 85500 40000 4000000 100000 20000 6000 6900 30000 85500 8500 70000 700 260000 30 85500 NA NA NA µg/l =micrograms per liter Aa, Ab, Ac, Ad, Ae: Analyte reported with possible high bias GCL = gross contamination level J: Detected but below the Reporting Limit; therefore, result is an estimated concentration BDL = Below Laboratory Detection Limit NA = Not ApplicableBold = Values exceeding the 2L StandardHighlighted Bold = Values exceeding GCLs Analytical Method (e.g., VOC by EPA 8260)  Contaminant of Concern (ug/L)  Ba r i u m 1.2 - D i c h l o r o e t h a n e 1,3 , 5 - T r i m e t h y l b e n z e n e 4-I s o p r o p y l t o l u e n e Ace t o n e Ben z e n e Bro m o d i c h l o r o m e t h a n e Lea d 1,2 - D i b r o m o e t h a n e 1,1 - D i c h l o r o e t h y l e n e 1,1 - D i c h l o r o p r o p y l e n e 1,2 , 4 - T r i m e t h y l b e n z e n e 1,2 - D i b r o m o e t h a n e m,p - X y l e n e s Met h y l B u t y l K e t o n e Met h y l E t h y l K e t o n e Me t h y l I s o b u t y l K e t o n e Me t h y l - t e r t - B u t y l E t h e r Na p h t h a l e n e Chl o r o f o r m Ch l o r o m e t h a n e Dib r o m o c h l o r o m e t h a n e Eth y l b e n z e n e Iso p r o p y l E t h e r Iso p r o p y l b e n z e n e Tol u e n e Vin y l C h l o r i d e Xy l e n e s , t o t a l C5- C 8 A l i p h a t i c s C9 - C 1 2 A l i p h a t i c s C9 - C 1 0 A r o m a t i c s n-B u t y l b e n z e n e n-P r o p y l b e n z e n e o-X y l e n e sec - B u t y l b e n z e n e Sty r e n e Tet r a c h l o r o e t h y l e n e Minimum Reporting Limit (ug/L) 2L Standard (ug/L) GCL (ug/L) Page 3 of 6 Table B-4B: Summary of Historical Groundwater Sampling ResultsRevision Date: 10/30/23 Incident Number and Name: Incident No. 40323; ELFD Facility ID#: N/A 6010C 6010C 504.1 6200B 6200B 6200B 6200B 6200B 6200B 6200B 6200B 6200B 6200B 6200B 6200B 6200B 6200B 6200B 6200B 6200B 6200B 6200B 6200B 6200B 6200B 6200B 6200B 6200B 6200B 6200B 6200B 6200B 6200B 6200B VPH VPH VPH Well or SW ID Date Collected (m/dd/yy)Sample ID Incident Phase MW-301 8/18/15 MW-301 CSA NA NA 63 BDL BDL 3000 170 BDL 620 8.2 1400 16000 BDL BDL BDL BDL 3400 16 100 12000 510 BDL 240 BDL 920 70 290 5000 14 34 BDL 41000 BDL 17000 120000 32000 5900 MW-301 6/6/16 MW-301 CAP NA NA 84 BDL BDL 1700 94 BDL 420 BDL BDL 11000 BDL BDL BDL BDL 2600 BDL 72 10000 440 500 200 BDL 460 BDL 210 4400 BDL BDL BDL 35000 BDL 14000 100000 35000 6400 J MW-301 12/7/16 MW-301 CAP NA NA NA BDL BDL 2500 180 BDL 620 BDL 780 J 12000 BDL BDL BDL BDL 3000 BDL 97 11000 380 500 140 BDL 880 BDL 290 5100 BDL BDL BDL 30000 BDL 16000 NA NA NA MW-301 6/29/17 MW-301 CAP NA NA 130 BDL BDL 1800 150 BDL 460 BDL 760 J 15000 BDL BDL BDL BDL 2800 BDL 73 10000 310 490 J 140 BDL 570 BDL 220 3700 BDL 51 BDL 42000 BDL 15000 110000 38000 6600 MW-301 2/28/18 MW-301 CAP NA NA NA BDL BDL 1600 220 BDL 510 BDL 1300 20000 BDL BDL BDL BDL 2700 BDL 280 9500 310 850 170 BDL 820 BDL 340 4500 BDL BDL BDL 45000 BDL 14000 96000 75000 7400 MW-301 1/18/19 MW-301 CAP NA NA NA BDL BDL 2100 160 34 J 530 BDL 1300 19000 BDL BDL BDL BDL 3000 BDL 84 11000 370 770 190 BDL 800 BDL 260 5000 BDL 40 J BDL 49000 BDL 16000 86000 29000 6300 MW-301 10/3/19 MW-301 CAP NA NA NA BDL BDL 2300 72 BDL 520 5.4 1900 J 11000 BDL BDL BDL BDL 3100 BDL 86 11000 580 880 270 BDL 810 18 260 5100 11 55 BDL 39000 BDL 16000 130000 34000 6800 MW-301 6/8/20 MW-301 CAP NA NA NA BDL BDL 2000 72 BDL 520 BDL 930 J 12000 BDL BDL BDL BDL 2600 BDL 78 9700 370 620 210 BDL 750 BDL 230 4400 BDL 49 J BDL 38000 BDL 14000 99000 28000 8000 MW-301 1/22/21 MW-301 CAP NA NA NA BDL BDL 2200 60 BDL 560 BDL 760 J 9200 BDL BDL BDL BDL 2800 BDL 91 9700 510 800 330 BDL 1000 BDL 250 4700 BDL 58 BDL 34000 BDL 14000 71000 30000 5700 MW-301 9/23/21 MW-301 CAP NA NA NA BDL BDL 2160 52.8 BDL 529 BDL 1020 8770 BDL BDL BDL BDL 3140 BDL 92 10200 498 902 209 BDL 858 BDL 259 5060 BDL 62.4 BDL 38600 BDL 15300 65600 32100 5960 MW-301 3/18/22 MW-301 CAP NA NA NA BDL BDL 1680 127 BDL 409 BDL BDL 13800 BDL BDL BDL BDL 2810 BDL 72.7 10100 BDL 1090 BDL BDL 727 BDL 205 4660 BDL 62.1 BDL 41500 BDL 14800 77400 33200 5220 MW-301 9/26/23 MW-301 CAP NA NA NA BDL BDL 2150 31.9 J BDL 537 BDL BDL 6820 BDL BDL BDL BDL 2710 BDL 89.6 10200 BDL 795 BDL BDL 1200 BDL 238 4950 BDL 28.2 J BDL 28400 BDL 15200 61000 34800 5910 MW-302 8/18/15 MW-302 CSA NA NA BDL BDL BDL BDL BDL BDL BDL BDL BDL 8.1 BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL 24 BDL BDL MW-302 6/6/16 MW-302 CAP NA NA 0.018 J BDL BDL 6.6 BDL BDL 1.7 BDL BDL 16 BDL BDL BDL BDL 14 BDL BDL 46 BDL BDL BDL BDL 1.5 BDL 0.78 24 BDL 0.61 BDL 150 E BDL 71 93 110 21 J MW-302 1/18/19 MW-302 CAP NA NA NA BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL 18 J BDL MW-302 6/8/20 MW-302 CAP NA NA NA BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL MW-302 1/22/21 MW-302 CAP NA NA NA BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL MW-303 8/18/15 MW-303 CSA NA NA BDL BDL BDL BDL BDL 1.1 BDL BDL BDL 33 1.3 0.76 BDL 2.3 BDL BDL BDL BDL BDL BDL BDL BDL 0.70 BDL BDL BDL BDL BDL BDL BDL BDL BDL 12 BDL BDL MW-303 6/29/17 MW-303 CAP NA NA BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL MW-303 1/18/19 MW-303 CAP NA NA NA BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL 2.2 J 14 J BDL MW-303 10/3/19 MW-303 CAP NA NA NA BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL MW-303 6/8/20 MW-303 CAP NA NA NA BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL MW-303 1/26/21 MW-303 CAP NA NA NA BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL MW-303 9/23/21 MW-303 CAP NA NA NA BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL MW-303 3/18/22 MW-303 CAP NA NA NA BDL BDL 1.49 BDL BDL 0.563 BDL BDL 0.815 BDL BDL BDL BDL 0.988 BDL BDL 4.19 BDL BDL BDL BDL BDL BDL BDL 1.81 BDL BDL BDL 5.15 BDL 6 13 J 52.1 BDL MW-303 9/26/23 MW-303 CAP NA NA NA BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL 0.01 0.005 1.3 0.5 5.1 10 10 10 10 10 200 100 6.2 0.5 0.5 8.1 10 10 10 200 20 1000 20 20 20 10 10 100 10 10 0.5 100 50 300 1000 1000 1000 700 15 0.02 350 NA 400 0.02 0.4 400 25 6000 1 NA 70 3 NA 600 70 70 500 40 4000 100 20 6 70 70 500 70 70 0.7 600 0.03 500 400 700 200 700000 15000 50 350000 NA 28500 50 400 25000 11700 6000000 5000 NA 70000 3000 NA 84500 70000 25000 85500 40000 4000000 100000 20000 6000 6900 30000 85500 8500 70000 700 260000 30 85500 NA NA NA µg/l =micrograms per liter Aa, Ab, Ac, Ad, Ae: Analyte reported with possible high bias GCL = gross contamination level J: Detected but below the Reporting Limit; therefore, result is an estimated concentrationBDL = Below Laboratory Detection LimitNA = Not Applicable Bold = Values exceeding the 2L StandardHighlighted Bold = Values exceeding GCLs Bar i u m Lea d 1,2 - D i b r o m o e t h a n e 1,1 - D i c h l o r o e t h y l e n e 1,1 - D i c h l o r o p r o p y l e n e 1,2 , 4 - T r i m e t h y l b e n z e n e Analytical Method (e.g., VOC by EPA 8260)  Contaminant of Concern (ug/L)  Chl o r o f o r m Ch l o r o m e t h a n e Dib r o m o c h l o r o m e t h a n e Eth y l b e n z e n e Iso p r o p y l E t h e r 1,2 - D i b r o m o e t h a n e 1.2 - D i c h l o r o e t h a n e 1,3 , 5 - T r i m e t h y l b e n z e n e 4-I s o p r o p y l t o l u e n e Ac e t o n e Ben z e n e C9 - C 1 0 A r o m a t i c s Minimum Reporting Limit (ug/L) 2L Standard (ug/L) GCL (ug/L) Tet r a c h l o r o e t h y l e n e To l u e n e Vin y l C h l o r i d e Xy l e n e s , t o t a l C5 - C 8 A l i p h a t i c s C9 - C 1 2 A l i p h a t i c s Na p h t h a l e n e n- B u t y l b e n z e n e n-P r o p y l b e n z e n e o-X y l e n e sec - B u t y l b e n z e n e Sty r e n e Iso p r o p y l b e n z e n e m,p - X y l e n e s Me t h y l B u t y l K e t o n e Me t h y l E t h y l K e t o n e Met h y l I s o b u t y l K e t o n e Me t h y l - t e r t - B u t y l E t h e r Bro m o d i c h l o r o m e t h a n e Page 4 of 6 Table B-4B: Summary of Historical Groundwater Sampling ResultsRevision Date: 10/30/23 Incident Number and Name: Incident No. 40323; ELFD Facility ID#: N/A 6010C 6010C 504.1 6200B 6200B 6200B 6200B 6200B 6200B 6200B 6200B 6200B 6200B 6200B 6200B 6200B 6200B 6200B 6200B 6200B 6200B 6200B 6200B 6200B 6200B 6200B 6200B 6200B 6200B 6200B 6200B 6200B 6200B 6200B VPH VPH VPH Well or SW ID Date Collected (m/dd/yy)Sample ID Incident Phase MW-304 8/18/15 MW-304 CSA NA NA BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL MW-305 8/17/15 MW-305 CSA NA NA BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL MW-305 1/26/21 MW-305 CAP NA NA NA BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL MW-306 8/17/15 MW-306 CSA NA NA 0.22 BDL BDL 3.3 BDL 45 BDL BDL BDL 740 BDL BDL BDL BDL BDL 39 1.9 0.56 BDL BDL BDL BDL 14 BDL BDL 2 BDL BDL BDL 0.55 BDL 2.6 2500 57 35 MW-306 12/7/16 MW-306 CAP NA NA NA BDL BDL 110 BDL 220 46 0.76 BDL 1300 BDL BDL BDL BDL 2.5 300 BDL 460 BDL BDL BDL 75 31 2.2 BDL 110 BDL BDL BDL 5 1.8 570 NA NA NA MW-306 2/28/18 MW-306 CAP NA NA NA BDL BDL 1.6 BDL 230 1.7 BDL BDL 600 BDL BDL BDL BDL 13 330 3.4 1.6 BDL BDL 2.7 84 19 BDL 2.6 2 BDL BDL BDL BDL 1.8 3.5 2300 310 97 MW-401 11/17/15 MW-401 CSA NA NA 180 BDL 550 2200 210 140 590 BDL 3600 12000 BDL BDL BDL BDL 2600 160 93 8400 780 2000 350 BDL 940 BDL 280 3900 BDL BDL BDL 26000 BDL 12000 9100 29000 6100 MW-401 6/6/16 MW-401 CAP NA NA 110 BDL BDL 2200 130 67 540 BDL 1300 11000 BDL BDL BDL BDL 3000 61 80 12000 930 760 360 BDL 410 BDL 240 5200 9.3 BDL BDL 23000 BDL 17000 85000 38000 7700 J MW-401 12/7/16 MW-401 CAP NA NA NA BDL BDL 2400 210 100 590 BDL 2600 10000 BDL BDL BDL BDL 3200 91 92 11000 960 1400 270 BDL 1300 BDL 280 5300 BDL BDL BDL 28000 BDL 16000 NA NA NA MW-401 6/29/17 MW-401 CAP NA NA 160 BDL BDL 1900 190 110 490 BDL 2800 12000 BDL BDL BDL BDL 3000 91 76 11000 880 1500 340 BDL 660 BDL 230 5200 BDL BDL BDL 34000 BDL 16000 85000 39000 6700 MW-401 2/28/18 MW-401 CAP NA NA NA BDL BDL 1800 240 140 500 BDL 3800 14000 BDL BDL BDL BDL 3300 130 180 10000 850 2300 420 BDL 910 BDL 290 4700 BDL BDL BDL 36000 BDL 15000 74000 82000 8600 MW-401 1/18/19 MW-401 CAP NA NA NA BDL BDL 2300 200 130 590 BDL 3900 15000 BDL BDL BDL BDL 3600 110 100 13000 1300 2200 530 BDL 930 27 J 290 5800 BDL BDL BDL 41000 BDL 19000 75000 45000 7300 MW-401 10/3/19 MW-401 CAP NA NA NA BDL BDL 2800 120 56 610 6.7 2500 9300 BDL BDL BDL BDL 3600 58 100 13000 1500 1400 520 BDL 930 21 310 5800 12 BDL BDL 30000 BDL 19000 79000 49000 9300 MW-401 6/8/20 MW-401 CAP NA NA NA BDL BDL 2200 83 BDL 580 BDL 1100 7400 BDL BDL BDL BDL 3000 35 J 87 11000 1100 750 460 BDL 740 22 J 270 4900 BDL BDL BDL 25000 BDL 16000 67000 41000 9400 MW-401 1/22/21 MW-401 CAP NA NA NA BDL BDL 2600 74 BDL 650 BDL 1200 7000 BDL BDL BDL BDL 3100 24 J 100 11000 1000 1100 530 BDL 990 21 J 310 5000 BDL BDL BDL 24000 BDL 16000 62000 39000 5900 MW-401 9/23/21 MW-401 CAP NA NA NA BDL BDL 2770 122 68.4 674 BDL 1880 8500 BDL BDL BDL BDL 3480 61 113 11200 1270 2070 441 BDL 1070 25.8 J 335 5540 BDL BDL BDL 28300 BDL 16700 52300 36200 7700 MW-401 3/18/22 MW-401 CAP NA NA NA BDL BDL 2160 143 93.7 532 BDL 4480 10200 BDL BDL BDL BDL 3430 84.3 90.6 12500 BDL 3030 BDL BDL 871 BDL 263 5660 BDL BDL BDL 32100 BDL 18200 56700 38600 7040 MW-401 9/26/23 MW-401 CAP NA NA NA BDL BDL 2630 93.1 BDL 660 BDL 3580 8510 BDL BDL BDL BDL 3380 BDL 110 12800 BDL 1780 BDL BDL 1240 BDL 298 5890 BDL BDL BDL 28200 BDL 18700 57800 40500 5970 MW-402 11/17/15 MW-402 CSA NA NA BDL BDL BDL 180 BDL BDL 58 1.3 BDL BDL BDL BDL BDL BDL 0.77 3.2 BDL 53 1.7 BDL 4.1 BDL 12 0.94 3.1 48 0.80 BDL BDL BDL BDL 100 1200 920 880 MW-402 6/6/16 MW-402 CAP NA NA BDL BDL BDL 75 BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL 52 BDL BDL BDL BDL 480 190 220 MW-402 2/28/18 MW-402 CAP NA NA NA BDL BDL 140 BDL BDL 42 0.95 BDL BDL BDL BDL BDL BDL 0.56 BDL 6.2 33 BDL BDL 0.81 J BDL 21 3.7 4 40 1.1 BDL BDL BDL BDL 73 730 920 520 MW-402 6/8/20 MW-402 CAP NA NA NA BDL BDL 0.40 J BDL BDL 0.31 J BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL 7.3 J 36 J 11 J MW-402 1/22/21 MW-402 CAP NA NA NA BDL BDL 3.1 BDL BDL 1.5 BDL BDL BDL BDL BDL BDL BDL BDL BDL 0.22 J 0.25 J BDL BDL BDL BDL 0.39 J BDL BDL 0.74 BDL BDL BDL BDL BDL 0.99 J BDL 38 J BDL MW-402 9/23/21 MW-402 CAP NA NA NA BDL BDL 91.4 BDL BDL 30.4 0.459 J BDL BDL BDL BDL BDL BDL 0.39 J BDL 3.04 18.3 0.282 J BDL BDL BDL 9.44 BDL 2.41 11.2 0.76 BDL BDL BDL BDL 29.5 106 357 259 MW-402 3/18/22 MW-402 CAP NA NA NA BDL BDL 4.52 BDL BDL 1.46 BDL BDL 12.6 BDL BDL BDL BDL 3.1 BDL BDL 12.8 BDL BDL BDL BDL 0.982 J BDL 0.381 J 6.49 BDL BDL BDL 36.7 BDL 19.3 59 79.5 BDL MW-402 9/26/23 MW-402 CAP NA NA NA BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL 0.01 0.005 1.3 0.5 5.1 10 10 10 10 10 200 100 6.2 0.5 0.5 8.1 10 10 10 200 20 1000 20 20 20 10 10 100 10 10 0.5 100 50 300 1000 1000 1000 700 15 0.02 350 NA 400 0.02 0.4 400 25 6000 1 NA 70 3 NA 600 70 70 500 40 4000 100 20 6 70 70 500 70 70 0.7 600 0.03 500 400 700 200 700000 15000 50 350000 NA 28500 50 400 25000 11700 6000000 5000 NA 70000 3000 NA 84500 70000 25000 85500 40000 4000000 100000 20000 6000 6900 30000 85500 8500 70000 700 260000 30 85500 NA NA NA µg/l =micrograms per liter Aa, Ab, Ac, Ad, Ae: Analyte reported with possible high bias GCL = gross contamination level J: Detected but below the Reporting Limit; therefore, result is an estimated concentration BDL = Below Laboratory Detection Limit NA = Not ApplicableBold = Values exceeding the 2L StandardHighlighted Bold = Values exceeding GCLs Analytical Method (e.g., VOC by EPA 8260)  1,2 , 4 - T r i m e t h y l b e n z e n e 1,2 - D i b r o m o e t h a n e 1.2 - D i c h l o r o e t h a n e 1,3 , 5 - T r i m e t h y l b e n z e n e 4-I s o p r o p y l t o l u e n e Ace t o n e Contaminant of Concern (ug/L)  Ba r i u m Lea d 1,2 - D i b r o m o e t h a n e 1,1 - D i c h l o r o e t h y l e n e 1,1 - D i c h l o r o p r o p y l e n e Iso p r o p y l E t h e r Is o p r o p y l b e n z e n e m,p - X y l e n e s Met h y l B u t y l K e t o n e Met h y l E t h y l K e t o n e Met h y l I s o b u t y l K e t o n e Be n z e n e Br o m o d i c h l o r o m e t h a n e Ch l o r o f o r m Chl o r o m e t h a n e Dib r o m o c h l o r o m e t h a n e Eth y l b e n z e n e C9- C 1 2 A l i p h a t i c s C9- C 1 0 A r o m a t i c s Minimum Reporting Limit (ug/L) 2L Standard (ug/L) GCL (ug/L) Sty r e n e Tet r a c h l o r o e t h y l e n e To l u e n e Vin y l C h l o r i d e Xy l e n e s , t o t a l C5 - C 8 A l i p h a t i c s Met h y l - t e r t - B u t y l E t h e r Nap h t h a l e n e n-B u t y l b e n z e n e n-P r o p y l b e n z e n e o-X y l e n e se c - B u t y l b e n z e n e Page 5 of 6 Table B-4B: Summary of Historical Groundwater Sampling ResultsRevision Date: 10/30/23 Incident Number and Name: Incident No. 40323; ELFD Facility ID#: N/A 6010C 6010C 504.1 6200B 6200B 6200B 6200B 6200B 6200B 6200B 6200B 6200B 6200B 6200B 6200B 6200B 6200B 6200B 6200B 6200B 6200B 6200B 6200B 6200B 6200B 6200B 6200B 6200B 6200B 6200B 6200B 6200B 6200B 6200B VPH VPH VPH Well or SW ID Date Collected (m/dd/yy)Sample ID Incident Phase MW-403 11/17/15 MW-403 CSA NA NA 0.022 BDL BDL 0.79 BDL BDL BDL BDL BDL 2.6 BDL 1.6 BDL BDL 0.60 0.64 BDL 2.6 BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL 3.7 14 19 4.5 MW-403 6/6/16 MW-403 CAP NA NA 0.084 BDL BDL 11 A BDL 1.2 BDL BDL BDL 26 BDL 1.4 BDL BDL 4.3 Ad BDL BDL 18 Aa 5 BDL BDL BDL BDL BDL BDL 7.9 Ae BDL BDL BDL 19 Ab BDL 26 Ac 61 38 J 17 J MW-501 6/2/16 MW-501 CAP NA NA 22 BDL BDL 2200 BDL 78 580 BDL BDL 4900 BDL BDL BDL BDL 3000 78 94 11000 580 350 210 BDL 840 BDL 290 4900 BDL 120 BDL 21000 BDL 16000 72000 30000 8900 MW-501 12/7/16 MW-501 CAP NA NA NA BDL BDL 3000 BDL 69 750 BDL 770 J 4400 BDL BDL BDL BDL 3100 62 110 12000 1000 BDL 280 BDL 950 110 370 5100 BDL 130 BDL 18000 BDL 17000 NA NA NA MW-501 6/29/17 MW-501 CAP NA NA 25 BDL BDL 2500 28 95 820 14 630 5500 BDL BDL BDL BDL 2500 83 110 9600 580 BDL 200 BDL 1300 44 360 4400 20 75 BDL 19000 BDL 14000 54000 36000 7900 MW-501 2/28/18 MW-501 CAP NA NA NA BDL BDL 1800 38 120 520 BDL 790 6400 BDL BDL BDL BDL 2600 110 170 9800 700 660 300 BDL 850 BDL 270 4400 BDL 130 BDL 21000 BDL 14000 53000 78000 10000 MW-501 1/18/19 MW-501 CAP NA NA NA BDL BDL 2800 22 J 94 740 13 J 670 5000 BDL BDL BDL BDL 2500 90 90 9900 630 400 240 BDL 820 32 270 4500 16 J 50 BDL 17000 BDL 14000 32000 25000 9400 MW-501 10/3/19 MW-501 CAP NA NA NA BDL BDL 3200 5 20 770 9.5 250 970 BDL BDL BDL BDL 1700 20 66 9200 240 BDL 110 BDL 630 21 170 4300 13 60 BDL 8500 BDL 14000 25000 31000 11000 MW-501 6/8/20 MW-501 CAP NA NA NA BDL BDL 1200 64 BDL 320 BDL BDL 2800 BDL BDL BDL BDL 1500 69 43 J 5900 330 BDL 130 BDL 410 BDL 120 2600 BDL 23 J BDL 9700 BDL 8500 34000 21000 5500 MW-501 1/22/21 MW-501 CAP NA NA NA BDL BDL 1400 BDL 51 350 BDL 470 J 2300 BDL BDL BDL BDL 1500 52 52 5600 340 BDL 110 BDL 440 37 J 140 2500 BDL 28 J BDL 8200 BDL 8200 21000 20000 3100 MW-501 9/23/21 MW-501 CAP NA NA NA BDL BDL 2750 BDL 42.9 J 719 BDL 271 J 1970 BDL BDL BDL BDL 1880 BDL 79.1 8250 446 282 J 166 BDL 811 24.1 J 202 3710 BDL 52.6 BDL 8440 BDL 12000 18300 26500 6990 MW-501 3/18/22 MW-501 CAP NA NA NA BDL BDL 1760 BDL 78.3 499 BDL BDL 4190 BDL BDL BDL BDL 2110 71.1 53.1 8240 BDL 529 BDL BDL 553 BDL 152 3950 BDL 35.3 J BDL 13100 BDL 12200 27400 33100 7200 MW-501 9/26/23 MW-501 CAP NA NA NA BDL BDL 2800 BDL BDL 761 BDL BDL 440 BDL BDL BDL BDL 1940 BDL 86.2 9430 BDL BDL BDL BDL 1210 BDL 209 4210 BDL 55.5 BDL 5770 BDL 13600 13800 3550 7840 AS-1 12/7/16 AS-1 CAP NA NA NA BDL BDL 1200 20 160 290 BDL 190 3600 BDL BDL BDL BDL 570 200 38 3300 73 BDL 66 47 220 BDL 89 1700 6.3 18 BDL 1700 BDL 5000 NA NA NA AS-2 12/7/16 AS-2 CAP NA NA NA BDL BDL 1700 500 1000 420 BDL 5200 22000 BDL BDL BDL BDL 2700 1300 67 9000 260 4600 240 100 920 BDL 210 4300 BDL BDL BDL 34000 BDL 13000 NA NA NA 0.01 0.005 1.3 0.5 5.1 10 10 10 10 10 200 100 6.2 0.5 0.5 8.1 10 10 10 200 20 1000 20 20 20 10 10 100 10 10 0.5 100 50 300 1000 1000 1000 700 15 0.02 350 NA 400 0.02 0.4 400 25 6000 1 NA 70 3 NA 600 70 70 500 40 4000 100 20 6 70 70 500 70 70 0.7 600 0.03 500 400 700 200 700000 15000 50 350000 NA 28500 50 400 25000 11700 6000000 5000 NA 70000 3000 NA 84500 70000 25000 85500 40000 4000000 100000 20000 6000 6900 30000 85500 8500 70000 700 260000 30 85500 NA NA NA µg/l =micrograms per liter Aa, Ab, Ac, Ad, Ae: Analyte reported with possible high bias GCL = gross contamination level J: Detected but below the Reporting Limit; therefore, result is an estimated concentration BDL = Below Laboratory Detection Limit NA = Not ApplicableBold = Values exceeding the 2L StandardHighlighted Bold = Values exceeding GCLs Analytical Method (e.g., VOC by EPA 8260)  Contaminant of Concern (ug/L)  Bar i u m Le a d 1,2 - D i b r o m o e t h a n e 1,1 - D i c h l o r o e t h y l e n e Met h y l E t h y l K e t o n e Be n z e n e Bro m o d i c h l o r o m e t h a n e Ch l o r o f o r m Chl o r o m e t h a n e Dib r o m o c h l o r o m e t h a n e 1,1 - D i c h l o r o p r o p y l e n e 1,2 , 4 - T r i m e t h y l b e n z e n e 1,2 - D i b r o m o e t h a n e 1.2 - D i c h l o r o e t h a n e 1,3 , 5 - T r i m e t h y l b e n z e n e 4-I s o p r o p y l t o l u e n e C5 - C 8 A l i p h a t i c s C9- C 1 2 A l i p h a t i c s C9- C 1 0 A r o m a t i c s Minimum Reporting Limit (ug/L) 2L Standard (ug/L) GCL (ug/L) se c - B u t y l b e n z e n e Sty r e n e Te t r a c h l o r o e t h y l e n e To l u e n e Vin y l C h l o r i d e Xy l e n e s , t o t a l Met h y l I s o b u t y l K e t o n e Met h y l - t e r t - B u t y l E t h e r Nap h t h a l e n e n-B u t y l b e n z e n e n-P r o p y l b e n z e n e o-X y l e n e Eth y l b e n z e n e Is o p r o p y l E t h e r Iso p r o p y l b e n z e n e m,p - X y l e n e s Met h y l B u t y l K e t o n e Ace t o n e Page 6 of 6 Table B-4C: Summary of Historical Water Supply Well Sampling ResultsRevision Date: 10/30/23 Incident Number and Name: Incident No. 40323; ELFD Facility ID#: N/A 6010C 6010C 504.1 6200B 6200B 6200B 6200B 6200B 6200B 6200B 6200B 6200B 6200B 6200B 6200B 6200B 6200B 6200B 6200B 6200B 6200B 6200B 6200B 6200B 6200B 6200B 6200B 6200B 6200B 6200B 6200B 6200B 6200B 6200B VPH VPH VPH Well or SW ID Date Collected (m/dd/yy)Sample ID Incident Phase WSW-1 7/1/14 WSW-1 LSA 37 BDL NA BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL 0.71 BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL 1.8 BDL BDL BDL BDL BDL BDL WSW-1 10/13/17 WSW-1 CAP NA NA NA BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL 1.1 BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL 1.4 BDL BDL BDL BDL BDL BDL WSW-1 4/18/19 WSW-1 CAP NA NA NA BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL 0.33 J BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL 2.4 BDL BDL BDL BDL BDL BDL WSW-1 8/12/20 WSW-1 CAP NA NA NA BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL 0.29 J 2.2 BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL 0.91 BDL BDL BDL BDL BDL BDL WSW-1 10/20/20 WSW-1 CAP NA NA NA BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL 0.45 J BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL 1.6 BDL BDL BDL NA NA NA WSW-1 10/21/21 WSW-1 CAP NA NA NA BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL 0.334 J BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL 1.45 BDL BDL BDL BDL BDL BDL WSW-2 7/1/14 WSW-2 LSA 120 BDL NA BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL WSW-2 10/13/17 WSW-2 CAP NA NA NA BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL WSW-2 4/18/19 WSW-2 CAP NA NA NA BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL WSW-3 7/1/14 WSW-3 LSA BDL BDL NA BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL 1.1 BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL WSW-3 10/13/17 WSW-3 CAP NA NA NA 1.5 BDL BDL BDL BDL BDL BDL BDL BDL BDL 0.62 BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL 0.62 BDL BDL BDL BDL BDL BDL WSW-3 4/18/19 WSW-3 CAP NA NA NA 1.7 BDL BDL BDL BDL BDL BDL BDL BDL BDL 1.7 BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL WSW-3 8/12/20 WSW-3 CAP NA NA NA 0.65 BDL BDL BDL BDL BDL BDL BDL BDL BDL 1.9 4.2 BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL 0.84 BDL BDL BDL BDL BDL BDL WSW-3 10/20/20 WSW-3 CAP NA NA NA 0.6 BDL BDL BDL BDL BDL BDL BDL BDL BDL 2.3 BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL 0.85 BDL BDL BDL NA NA NA WSW-3 10/21/21 WSW-3 CAP NA NA NA 0.428 J BDL BDL BDL BDL BDL BDL BDL BDL BDL 2.04 BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL 0.818 BDL BDL BDL BDL BDL BDL WSW-4 10/13/17 WSW-4 CAP NA NA NA 1 BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL 0.68 BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL 0.8 BDL BDL BDL BDL BDL BDL WSW-4 4/18/19 WSW-4 CAP NA NA NA BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL 1 BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL WSW-4 8/12/20 WSW-4 CAP NA NA NA BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL 1 2.3 BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL 0.47 J BDL BDL BDL BDL BDL BDL WSW-4 10/20/20 WSW-4 CAP NA NA NA BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL 1.3 BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL 0.59 BDL BDL BDL NA NA NA WSW-4 10/21/21 WSW-4 CAP NA NA NA BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL 0.899 BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL 0.426 J BDL BDL BDL BDL BDL BDL WSW-7 3/22/18 WSW-7 CAP NA NA NA BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL 1 BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL 1.6 BDL BDL BDL BDL BDL BDL WSW-7 4/18/19 WSW-7 CAP NA NA NA BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL WSW-7 8/12/20 WSW-7 CAP NA NA NA 0.46 J BDL BDL BDL BDL BDL BDL BDL BDL BDL 0.38 J 2.4 BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL 0.62 BDL BDL BDL BDL BDL BDL WSW-7 10/20/20 WSW-7 CAP NA NA NA 0.39 J BDL BDL BDL BDL BDL BDL BDL BDL BDL 0.32 J BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL 0.56 BDL BDL BDL NA NA NA WSW-7 (DUP)10/20/20 WSW-7 (DUP)CAP NA NA NA 0.42 J BDL BDL BDL BDL BDL BDL BDL BDL BDL 0.34 J BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL 0.52 BDL BDL BDL NA NA NA WSW-7 10/21/21 WSW-7 CAP NA NA NA BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL 0.01 0.005 1.3 0.5 5.1 10 10 10 10 10 200 100 6.2 0.5 0.5 8.1 10 10 10 200 20 1000 20 20 20 10 10 100 10 10 0.5 100 50 300 1000 1000 1000 700 15 0.02 350 NA 400 0.02 0.4 400 25 6000 1 NA 70 3 NA 600 70 70 500 40 4000 100 20 6 70 70 500 70 70 0.7 600 0.03 500 400 700 200 700000 15000 50 350000 NA 28500 50 400 25000 11700 6000000 5000 NA 70000 3000 NA 84500 70000 25000 85500 40000 4000000 100000 20000 6000 6900 30000 85500 8500 70000 700 260000 30 85500 NA NA NA µg/l =micrograms per liter Aa, Ab, Ac, Ad, Ae: Analyte reported with possible high bias GCL = gross contamination level J: Detected but below the Reporting Limit; therefore, result is an estimated concentration BDL = Below Laboratory Detection LimitNA = Not Applicable Bold = Values exceeding the 2L StandardHighlighted Bold = Values exceeding GCLs Xy l e n e s , t o t a l C5 - C 8 A l i p h a t i c s C9 - C 1 2 A l i p h a t i c s Bro m o d i c h l o r o m e t h a n e Chl o r o f o r m Ch l o r o m e t h a n e 4-I s o p r o p y l t o l u e n e Ac e t o n e Ben z e n e GCL (ug/L) 1,1 - D i c h l o r o e t h y l e n e 1,1 - D i c h l o r o p r o p y l e n e 1,2 , 4 - T r i m e t h y l b e n z e n e 1,2 - D i b r o m o e t h a n e 1.2 - D i c h l o r o e t h a n e 1,3 , 5 - T r i m e t h y l b e n z e n e Eth y l b e n z e n e Iso p r o p y l E t h e r Iso p r o p y l b e n z e n e m,p - X y l e n e s Me t h y l B u t y l K e t o n e C9 - C 1 0 A r o m a t i c s Minimum Reporting Limit (ug/L) 2L Standard (ug/L) o-X y l e n e sec - B u t y l b e n z e n e Sty r e n e Tet r a c h l o r o e t h y l e n e To l u e n e Vin y l C h l o r i d e Me t h y l E t h y l K e t o n e Met h y l I s o b u t y l K e t o n e Me t h y l - t e r t - B u t y l E t h e r Na p h t h a l e n e n- B u t y l b e n z e n e n-P r o p y l b e n z e n e Dib r o m o c h l o r o m e t h a n e Analytical Method (e.g., VOC by EPA 8260)  Contaminant of Concern (ug/L)  Bar i u m Lea d 1,2 - D i b r o m o e t h a n e Page 1 of 1 Table B-5: Public and Private Water Supply Well and Other Receptor Information Revision Date: 10/30/2023 Incident Number and Name: Incident No. 40323; ELFD Facility ID#: N/A Public and Private Water Supply Wells 1 (SW-1) Parcel ID: 52784 Timothy Tench (Owner/User) 148 S Pilot Knob 704-400-4868 35.442236, -80.991590 Domestic 305 Drilled Not Known Not Known 450 Down 2 (SW-2) Parcel ID: 34461 Linda Vance (Owner/User) 164 S Pilot Knob 704-483-2180 35.442253, -80.991757 Domestic Not Known Not Known Not Known Not Known 490 Down 3 (SW-3) Parcel ID: 32959 Lynn Jetton (Owner/User) 187 S Pilot Knob 704-827-8250 35.440893, -80.992017 Domestic Not Known Not Known Not Known Not Known 820 Down 4 (SW-4) Parcel ID: 31233 Carol Tench (Owner/User) 213 S Pilot Knob 704-827-4424 35.440708, -80.993092 Domestic Not Known Not Known Not Known Not Known 1,070 Down 5 (SW-5) Parcel ID: 32896 Chastain Terry Napier (Owner) Bernice Nixon (Previous Owner) 133 S Pilot Knob 704-827-2648 (H) 35.442033, -80.990291 Abandoned (5/26/16)Not Known Not Known Not Known Not Known 270 Down 6 (SW-6) Parcel ID: 34482 Simon Hager (Owner)134 N Pilot Knob 704-827-4682 35.444241, - 80.989478 Not Used Not Known Not Known Not Known Not Known 440 Up 7 (SW-7) Parcel ID: 57154 Cody Tench (Owner/User) 201 S Pilot Knob 704-507-2219 35.439913, - 80.991673 Domestic 200 Drilled Not Known Not Known 1,220 Down Other Receptors (Other public water supplies, reservoirs, supply lines, surface water bodies, wellhead protection areas, recharge areas for deep aquifers, subsurface structures) Receptor ID Description Location Contact Phone Number Usage 7 Utility Line Transcontinental Gas Pipe Line Co. Crossing E- W: Parcel ID 32896 Curt Tate 713-215-2000 Private 8 Utility Line Lincoln County Water Line Highway 73 ROW Don Chamblee 704-736-8495 Public 9 Utility Line Lincoln County Water Line S. Pilot Knob Road ROW Don Chamblee 704-736-8495 Public * The location must be sufficiently accurate and precise to allow easy recovery of lost or damaged wells or replication of sampling points. ** Ft BGS = feet below ground surface Distance from source area of release (ft.) Up or downgradien t Well #Well Owner/ User (indicate which)Address Phone Number Well Use Well Depth (ft BGS) ** Type of Well Well Casing Depth (ft. BGS) Latitude/ Longitude of any significant point(s)* (describe to left) (decimal degrees) No significant points No significant points No significant points Well Screen Interval (x to y ft. BGS) Latitude/ Longitude * (decimal degrees) Distance from source area of release (ft.) 100 60 140 Up or down-gradient Down Up Up Table B-6: Property Owners/Occupants Revision Date: 10/30/2023 Incident Number and Name: Incident No. 40323; ELFD Facility ID#: N/A Tax Parcel Number/ Map ID Owner/ Occupant Name (Last, First MI)Address 53015 30063 Owner/Occupant: Norman Tire & Auto (Commercial) 7654 NC Highway 73 Stanley, NC 28164 32896 Owner/Occupant: Chastain Terry Napier (ie, Nixon Family) (Residential) 133 South Pilot Knob Road Stanley, NC 28164 57350 Owner/Occupant: Transcontinental Gas Pipe Line Co. (Pipeline) South Pilot Knob Road Stanley, NC 28164 34482 Owner: Heirs of Orabell Hager Occupant: Unknown (Residential) 134 North Pilot Knob Road Denver, NC 28037 Table B-9 Groundwater Depth To Water Measurements Revision Date: 10/30/2023 Incident Number and Name: Incident No. 40323; ELFD Facility ID#: N/A Well ID # Top of Casing Elevation (MSL) Screened Interval (top of screen, bottom of screen) Date Depth to Water* Uncorrected (feet) Free Product Thickness (feet) Depth to Water* Corrected for Free Product Thickness(feet) Groundwater Surface Elevation (MSL) 7/1/2014 18.78 0 18.78 794.36 8/21/2014 20.50 0 20.50 792.64 2/10/2015 21.80 0 21.80 791.34 11/17/2015 24.00 0 24.00 789.14 6/3/2016 19.25 0 19.25 793.89 6/29/2017 23.24 0 23.24 789.90 2/28/2018 24.93 0 24.93 788.21 1/18/2019 20.92 0 20.92 792.22 10/3/2019 21.77 0 21.77 791.37 6/8/2020 17.04 0 17.04 796.10 1/22/2021 16.61 0 16.61 796.53 9/23/2021 21.21 0 21.21 791.93 3/18/2022 23.20 0 23.20 789.94 9/26/2023 21.88 0 21.88 791.26 7/1/2014 16.04 0 16.04 792.87 8/21/2014 17.99 0 17.99 790.92 2/10/2015 18.84 0 18.84 790.07 11/17/2015 22.55 0 22.55 786.36 6/3/2016 16.29 0 16.29 792.62 12/7/2016 23.61 0 23.61 785.30 6/29/2017 20.02 0 20.02 788.89 2/15/2019 15.72 0 15.72 793.19 10/3/2019 19.65 0 19.65 789.26 8/21/2014 19.80 0 19.80 793.14 2/10/2015 20.92 0 20.92 792.02 11/17/2015 23.93 0 23.93 789.01 6/8/2016 18.10 0 18.10 794.84 6/29/2017 22.35 0 22.35 790.59 2/28/2018 24.68 0 24.68 788.26 1/18/2019 19.96 0 19.96 792.98 10/3/2019 21.06 0 21.06 791.88 6/8/2020 16.20 0 16.20 796.74 1/22/2021 15.78 0 15.78 797.16 9/23/2021 20.42 0 20.42 792.52 3/18/2022 20.29 0 20.29 792.65 9/26/2023 21.09 0 21.09 791.85 8/21/2014 20.66 0 20.66 791.12 2/10/2015 21.62 0 21.62 790.16 11/17/2015 23.55 0 23.55 788.23 6/3/2016 18.32 0 18.32 793.46 6/29/2017 22.85 0 22.85 788.93 2/28/2018 24.96 0 24.96 786.82 1/18/2019 19.85 0 19.85 791.93 10/3/2019 22.00 0 22.00 789.78 6/8/2020 16.68 0 16.68 795.10 1/22/2021 10.90 0 10.90 800.88 9/23/2021 21.46 0 21.46 790.32 3/18/2022 22.75 0 22.75 789.03 9/26/2023 21.35 0 21.35 790.43 2/10/2015 21.34 0 21.34 792.59 8/17/2015 24.28 0 24.28 789.65 11/17/2015 23.07 0 23.07 790.86 6/3/2016 23.07 0 23.07 790.86 6/29/2017 22.66 0 22.66 791.27 2/28/2018 24.25 0 24.25 789.68 6/8/2020 16.40 0 16.40 797.53 1/22/021 16.16 0 16.16 797.77 9/23/2021 20.85 0 20.85 793.08 3/18/2022 23.00 0 23.00 790.93 9/26/2023 21.31 0 21.31 792.62 813.93 15-30 MW-101 813.14 10 – 25 MW-103 812.94 10 – 25 MW-102 808.91 10 – 25 MW-104 811.78 10 – 25 MW-201 *Depth to water is measured from top of casing. Table B-9 Groundwater Depth To Water Measurements Revision Date: 10/30/2023 Incident Number and Name: Incident No. 40323; ELFD Facility ID#: N/A Well ID # Top of Casing Elevation (MSL) Screened Interval (top of screen, bottom of screen) Date Depth to Water* Uncorrected (feet) Free Product Thickness (feet) Depth to Water* Corrected for Free Product Thickness(feet) Groundwater Surface Elevation (MSL) 2/10/2015 20.71 0 20.71 789.98 8/17/2015 23.10 0 23.10 787.59 11/17/2015 22.52 0 22.52 788.17 6/3/2016 18.30 0 18.30 792.39 6/29/2017 21.90 0 21.90 788.79 2/28/2018 24.25 0 24.25 786.44 1/18/2019 18.61 0 18.61 792.08 10/3/2019 21.33 0 21.33 789.36 1/22/2021 15.33 0 15.33 795.36 9/23/2021 20.63 0 20.63 790.06 3/18/2022 21.85 0 21.85 788.84 9/26/2023 21.30 0 21.30 789.39 2/10/2015 18.11 0 18.11 789.29 8/17/2015 21.20 0 21.20 786.20 11/17/2015 19.39 0 19.39 788.01 6/3/2016 16.93 0 16.93 790.47 12/7/2016 23.20 0 23.20 784.20 2/28/2018 21.35 0 21.35 786.05 6/8/2020 13.30 0 13.30 794.10 1/22/2021 12.76 0 12.76 794.64 9/23/2021 19.03 0 19.03 788.37 3/18/2022 19.13 0 19.13 788.27 9/26/2023 19.29 0 19.29 788.11 2/10/2015 18.00 0 18.00 788.80 8/17/2015 22.64 0 22.64 784.16 11/17/2015 17.30 0 17.30 789.50 6/3/2016 15.52 0 15.52 791.28 10/3/2019 21.82 0 21.82 784.98 1/22/2021 12.74 0 12.74 794.06 3/18/2022 17.70 0 17.70 789.10 2/10/2015 19.51 0 19.51 790.33 8/17/2015 25.55 0 25.55 784.29 11/17/2015 20.93 0 20.93 788.91 6/3/2016 17.02 0 17.02 792.82 10/3/2019 20.91 0 20.91 788.93 1/22/2021 13.80 0 13.80 796.04 3/18/2022 20.43 0 20.43 789.41 2/10/2015 22.05 0 22.05 792.46 8/17/2015 24.16 0 24.16 790.35 11/17/2015 23.90 0 23.90 790.61 6/2/2016 19.56 0 19.56 794.95 12/7/2016 26.30 0 26.30 788.21 6/29/2017 23.63 0 23.63 790.88 1/22/2021 17.08 0 17.08 797.43 3/18/2022 23.30 0 23.30 791.21 2/10/2015 22.00 0 22.00 790.24 8/17/2015 NA 0 NA NA 11/17/2015 NA 0 NA NA 6/2/2016 19.70 0 19.70 792.54 12/7/2016 26.69 0 26.69 785.55 8/17/2015 22.57 0 22.57 787.40 11/17/2015 21.95 0 21.95 788.02 6/2/2016 17.84 0 17.84 792.13 12/7/2016 24.72 0 24.72 785.25 6/29/2017 21.32 0 21.32 788.65 2/28/2018 23.66 0 23.66 786.31 1/18/2019 18.16 0 18.16 791.81 10/3/2019 20.75 0 20.75 789.22 6/8/2020 15.29 0 15.29 794.68 1/22/2021 14.86 0 14.86 795.11 9/23/2021 20.27 0 20.27 789.70 3/18/2022 21.65 0 21.65 788.32 9/26/2023 20.74 0 20.74 789.23 MW-207 812.24 50-55 15-30809.97MW-301 MW-205 809.84 10-25 MW-206 814.51 15-30 MW-204 806.80 10-25 MW-203 807.40 10-25 MW-202 810.69 10-25 *Depth to water is measured from top of casing. Table B-9 Groundwater Depth To Water Measurements Revision Date: 10/30/2023 Incident Number and Name: Incident No. 40323; ELFD Facility ID#: N/A Well ID # Top of Casing Elevation (MSL) Screened Interval (top of screen, bottom of screen) Date Depth to Water* Uncorrected (feet) Free Product Thickness (feet) Depth to Water* Corrected for Free Product Thickness(feet) Groundwater Surface Elevation (MSL) 8/17/2015 22.00 0 22.00 790.89 11/17/2015 20.29 0 20.29 792.60 6/6/2016 17.28 0 17.28 795.61 1/18/2019 17.61 0 17.61 795.28 6/8/2020 16.91 0 16.91 795.98 1/26/2021 14.90 0 14.90 797.99 3/18/2022 20.20 0 20.20 792.69 8/17/2015 22.65 0 22.65 789.55 11/17/2015 21.40 0 21.40 790.80 6/2/2016 17.41 0 17.41 794.79 6/29/2017 20.96 0 20.96 791.24 2/28/2018 22.93 0 22.93 789.27 1/18/2019 17.18 0 17.18 795.02 10/3/2019 21.04 0 21.04 791.16 6/8/2020 14.46 0 14.46 797.74 1/22/2021 14.10 0 14.10 798.10 9/23/2021 20.32 0 20.32 791.88 3/18/2022 20.65 0 20.65 791.55 9/26/2023 20.86 0 20.86 791.34 8/17/2015 18.81 0 18.81 787.75 11/17/2015 14.53 0 14.53 792.03 6/2/2016 12.99 0 12.99 793.57 8/17/2015 19.30 0 19.30 783.11 11/17/2015 12.98 0 12.98 789.43 6/2/2016 11.66 0 11.66 790.75 1/26/2021 7.87 0 7.87 794.54 8/17/2015 28.05 0 28.05 784.91 11/17/2015 NA 0 NA NA 6/2/2016 23.00 0 23.00 789.96 12/7/2016 25.51 0 25.51 787.45 2/28/2018 26.92 0 26.92 786.04 11/17/2015 22.20 0 22.20 787.73 6/2/2016 17.80 0 17.80 792.13 12/7/2016 24.30 0 24.30 785.63 6/29/2017 21.78 0 21.78 788.15 2/28/2018 23.94 0 23.94 785.99 1/18/2019 18.56 0 18.56 791.37 10/3/2019 21.88 0 21.88 788.05 6/8/2020 15.74 0 15.74 794.19 1/22/2021 14.43 0 14.43 795.50 9/23/2021 20.90 0 20.90 789.03 3/18/2022 21.52 0 21.52 788.41 9/26/2023 21.06 0 21.06 788.87 11/17/2015 20.34 0 20.34 785.47 6/2/2016 17.18 0 17.18 788.63 2/28/2018 21.92 0 21.92 783.89 6/8/2020 14.07 0 14.07 791.74 1/22/2021 13.92 0 13.92 791.89 9/23/2021 19.80 0 19.80 786.01 3/18/2022 20.30 0 20.30 785.51 9/26/2023 20.35 0 20.35 785.46 11/17/2015 26.49 0 26.49 786.61 6/2/2016 20.60 0 20.60 792.50 6/2/2016 19.62 0 19.62 789.88 12/7/2016 26.01 0 26.01 783.49 6/29/2017 22.90 0 22.90 786.60 2/28/2018 24.95 0 24.95 784.55 1/18/2019 18.97 0 18.97 790.53 10/3/2019 21.97 0 21.97 787.53 6/8/2020 17.02 0 17.02 792.48 1/22/2021 16.34 0 16.34 793.16 9/23/2021 21.48 0 21.48 788.02 3/18/2022 22.73 0 22.73 786.77 9/29/2023 22.03 0 22.03 787.47 AS-1 NA 30-35 12/7/2016 25.40 0 25.40 NA AS-2 NA 30-35 12/7/2016 26.10 0 26.10 NA MW-403 813.10 96-101 15-30805.81MW-402 MW-306 812.96 65-70 15-30809.93MW-401 MW-304 806.56 10-25 MW-305 802.41 10-25 MW-302 812.89 10-25 10-25812.20MW-303 15-30809.50MW-501 *Depth to water is measured from top of casing. Table B-10: Land Use Revision Date: 10/30/2023 Incident Number and Name: Incident No. 40323; ELFD Facility ID#: N/A Map ID #Date Determined Land Use Feature (include zoning) Location (complete street address if applicable) Distance and Direction from Source Area 53015 30063 8/22/14 Norman Tire & Auto (Former ELFD) Zoning: ELDD, B-N (CZ) 7654 NC Hwy 73, Stanley, NC 28164 Source Area 32896 8/22/14 B. Nixon Residence 45-Acre Parcel Zoning: ELDD, R-R 133 S Pilot Knob Road, Stanley, NC 28164 60’ South 53750 8/22/14 Transcontinental Gas Pipe Line Co Station Zoning: ELDD, R-T S Pilot Knob Road, Stanley, NC 28164 100’ South 34482 8/22/14 O. Hager Heirs Vacant Land Zoning: ELDD, R-T 120 N Pilot Knob Road, Denver, NC 28037 150’ North Zoning: ELDD East Lincoln Development District B-N Neighborhood Business (CZ)Conditional Zoning R-R Rural Residential R-T Transitional Residential APPENDIX A GROUNDWATER LABORATORY ANALYTICAL REPORTS AND CHAIN-OF- CUSTODY REPORT Laboratory's liability in any claim relating to analyses performed shall be limited to, at laboratory's option, repeating the analysis in question at laboratory's expense, or the refund of the charges paid for performance of said analysis. 10/9/2023 CES Group Greg Hans 274 N. Hwy 16, Ste 300 Denver, NC, 28037 Ref: Analytical Testing Lab Report Number: 23-270-0005 Client Project Description: East Lincoln Fire Department Dear Greg Hans: Waypoint Analytical, LLC (Charlotte) received sample(s) on 9/27/2023 for the analyses presented in the following report. The above referenced project has been analyzed per your instructions. The analyses were performed in accordance with the applicable analytical method. The analytical data has been validated using standard quality control measures performed as required by the analytical method. Quality Assurance, method validations, instrumentation maintenance and calibration for all parameters were performed in accordance with guidelines established by the USEPA (including 40 CFR 136 Method Update Rule May 2021) unless otherwise indicated. Certain parameters (chlorine, pH, dissolved oxygen, sulfite...) are required to be analyzed within 15 minutes of sampling. Usually, but not always, any field parameter analyzed at the laboratory is outside of this holding time. Refer to sample analysis time for confirmation of holding time compliance. The results are shown on the attached Report of Analysis(s). Results for solid matrices are reported on an as-received basis unless otherwise indicated. This report shall not be reproduced except in full and relates only to the samples included in this report. Please do not hesitate to contact me or client services if you have any questions or need additional information. Sincerely, Angela D Overcash Senior Project Manager Page 1 of 82 Certification Summary Laboratory ID: WP CNC: Waypoint Analytical Carolina, Inc. (C), Charlotte, NC State Program Lab ID Expiration Date 07/31/202437735State ProgramNorth Carolina 12/31/2023402State ProgramNorth Carolina 07/31/202499012State ProgramSouth Carolina 12/31/202399012State ProgramSouth Carolina Page 1 of 1 00016/23-270-0005 Page 2 of 82 Report Number: Sample Summary Table Client Project Description: 23-270-0005 East Lincoln Fire Department Lab No Client Sample ID Matrix Date Collected Date Received 09/26/2023 10:00Aqueous 96357 MW-201 09/27/2023 11:46 09/26/2023 11:00Aqueous 96358 MW-301 09/27/2023 11:46 09/26/2023 11:30Aqueous 96359 MW-203 09/27/2023 11:46 09/26/2023 12:00Aqueous 96360 MW-501 09/27/2023 11:46 09/26/2023 12:30Aqueous 96361 MW-402 09/27/2023 11:46 09/26/2023 13:30Aqueous 96362 MW-401 09/27/2023 11:46 09/26/2023 13:00Aqueous 96363 MW-202 09/27/2023 11:46 09/26/2023 14:00Aqueous 96364 MW-104 09/27/2023 11:46 09/26/2023 14:30Aqueous 96365 MW-101 09/27/2023 11:46 09/26/2023 10:00Aqueous 96366 MW-103 09/27/2023 11:46 09/26/2023 11:00Aqueous 96367 MW-303 09/27/2023 11:46 Page 3 of 82 Summary of Detected Analytes QualifiersAnalyzedUnitsResult Report Number: Client Sample ID Method Parameters Lab Sample ID 23-270-0005 Report Limit Project:East Lincoln Fire Department V 96358MW-301 6820 10/03/2023 12:406200BBenzeneµg/L 18.0 J31.9 10/03/2023 12:406200B1,2-Dibromoethane µg/L 20.0 2710 10/03/2023 12:406200BEthylbenzeneµg/L 17.0 577 10/03/2023 12:406200B2-Hexanone µg/L 38.0 89.6 10/03/2023 12:406200BIsopropylbenzeneµg/L 18.0 795 10/03/2023 12:406200BMethyl Ethyl Ketone (MEK)µg/L 71.0 282 10/03/2023 12:406200B4-Methyl-2-Pentanone µg/L 7.80 1200 10/03/2023 12:406200BNaphthaleneµg/L 47.0 238 10/03/2023 12:406200Bn-Propylbenzene µg/L 19.0 J28.2 10/03/2023 12:406200BStyreneµg/L 22.0 28400 10/04/2023 00:166200BTolueneµg/L 220 2150 10/03/2023 12:406200B1,2,4-Trimethylbenzene µg/L 19.0 537 10/03/2023 12:406200B1,3,5-Trimethylbenzene µg/L 18.0 4950 10/03/2023 12:406200Bo-Xylene µg/L 21.0 10200 10/03/2023 12:406200Bm,p-Xylene µg/L 42.0 15200 10/03/2023 12:406200BXylene (Total)µg/L 21.0 61000 09/28/2023 19:56MADEP-VPH Aliphatic C5-C8 µg/L 1150 34800 09/28/2023 19:56MADEP-VPH Aliphatic C9-C12 µg/L 2580 5910 09/28/2023 19:56MADEP-VPH Aromatic C9-C10 µg/L 402 V 96359MW-203 J0.300 10/03/2023 08:436200BTolueneµg/L 0.220 V 96360MW-501 440 10/03/2023 13:076200BBenzeneµg/L 18.0 1940 10/03/2023 13:076200BEthylbenzeneµg/L 17.0 86.2 10/03/2023 13:076200BIsopropylbenzeneµg/L 18.0 1210 10/03/2023 13:076200BNaphthaleneµg/L 47.0 209 10/03/2023 13:076200Bn-Propylbenzene µg/L 19.0 55.5 10/03/2023 13:076200BStyreneµg/L 22.0 5770 10/03/2023 13:076200BTolueneµg/L 22.0 2800 10/03/2023 13:076200B1,2,4-Trimethylbenzene µg/L 19.0 761 10/03/2023 13:076200B1,3,5-Trimethylbenzene µg/L 18.0 4210 10/03/2023 13:076200Bo-Xylene µg/L 21.0 9430 10/03/2023 13:076200Bm,p-Xylene µg/L 42.0 13600 10/03/2023 13:076200BXylene (Total)µg/L 21.0 13800 09/28/2023 20:20MADEP-VPH Aliphatic C5-C8 µg/L 1150 35500 09/28/2023 20:20MADEP-VPH Aliphatic C9-C12 µg/L 2580 Page 4 of 82 Summary of Detected Analytes QualifiersAnalyzedUnitsResult Report Number: Client Sample ID Method Parameters Lab Sample ID 23-270-0005 Report Limit Project:East Lincoln Fire Department V 96360MW-501 7840 09/28/2023 20:20MADEP-VPH Aromatic C9-C10 µg/L 402 V 96362MW-401 3580 10/03/2023 13:336200BAcetoneµg/L 180 8510 10/03/2023 13:336200BBenzeneµg/L 18.0 93.1 10/03/2023 13:336200B1,2-Dibromoethane µg/L 20.0 3380 10/03/2023 13:336200BEthylbenzeneµg/L 17.0 1230 10/03/2023 13:336200B2-Hexanone µg/L 38.0 110 10/03/2023 13:336200BIsopropylbenzeneµg/L 18.0 1780 10/03/2023 13:336200BMethyl Ethyl Ketone (MEK)µg/L 71.0 475 10/03/2023 13:336200B4-Methyl-2-Pentanone µg/L 7.80 1240 10/03/2023 13:336200BNaphthaleneµg/L 47.0 298 10/03/2023 13:336200Bn-Propylbenzene µg/L 19.0 28200 10/04/2023 00:426200BTolueneµg/L 220 2630 10/03/2023 13:336200B1,2,4-Trimethylbenzene µg/L 19.0 660 10/03/2023 13:336200B1,3,5-Trimethylbenzene µg/L 18.0 5890 10/03/2023 13:336200Bo-Xylene µg/L 21.0 12800 10/03/2023 13:336200Bm,p-Xylene µg/L 42.0 18700 10/03/2023 13:336200BXylene (Total)µg/L 21.0 57800 09/28/2023 20:44MADEP-VPH Aliphatic C5-C8 µg/L 1150 40500 09/28/2023 20:44MADEP-VPH Aliphatic C9-C12 µg/L 2580 5970 09/28/2023 20:44MADEP-VPH Aromatic C9-C10 µg/L 402 V 96363MW-202 7460 10/03/2023 14:006200BBenzeneµg/L 18.0 J28.1 10/03/2023 14:006200Bn-Butylbenzene µg/L 18.0 J27.7 10/03/2023 14:006200B1,2-Dibromoethane µg/L 20.0 2990 10/03/2023 14:006200BEthylbenzeneµg/L 17.0 149 10/03/2023 14:006200B2-Hexanone µg/L 38.0 92.9 10/03/2023 14:006200BIsopropylbenzeneµg/L 18.0 1260 10/03/2023 14:006200BNaphthaleneµg/L 47.0 286 10/03/2023 14:006200Bn-Propylbenzene µg/L 19.0 256 10/03/2023 14:006200BStyreneµg/L 22.0 33100 10/04/2023 01:096200BTolueneµg/L 220 2520 10/03/2023 14:006200B1,2,4-Trimethylbenzene µg/L 19.0 642 10/03/2023 14:006200B1,3,5-Trimethylbenzene µg/L 18.0 5230 10/03/2023 14:006200Bo-Xylene µg/L 21.0 11400 10/03/2023 14:006200Bm,p-Xylene µg/L 42.0 Page 5 of 82 Summary of Detected Analytes QualifiersAnalyzedUnitsResult Report Number: Client Sample ID Method Parameters Lab Sample ID 23-270-0005 Report Limit Project:East Lincoln Fire Department V 96363MW-202 16600 10/03/2023 14:006200BXylene (Total)µg/L 21.0 68400 09/28/2023 21:08MADEP-VPH Aliphatic C5-C8 µg/L 1150 34800 09/28/2023 21:08MADEP-VPH Aliphatic C9-C12 µg/L 2580 6170 09/28/2023 21:08MADEP-VPH Aromatic C9-C10 µg/L 402 V 96364MW-104 24100 10/05/2023 23:466200BBenzeneµg/L 180 326 10/04/2023 22:346200BDi-Isopropyl Ether (DIPE)µg/L 50.0 445 10/04/2023 22:346200B1,2-Dibromoethane µg/L 20.0 207 10/04/2023 22:346200B1,2-Dichloroethane µg/L 15.0 2300 10/04/2023 22:346200BEthylbenzeneµg/L 17.0 1110 10/04/2023 22:346200B2-Hexanone µg/L 38.0 64.9 10/04/2023 22:346200BIsopropylbenzeneµg/L 18.0 2790 10/04/2023 22:346200BMethyl Ethyl Ketone (MEK)µg/L 71.0 549 10/04/2023 22:346200B4-Methyl-2-Pentanone µg/L 7.80 1150 10/04/2023 22:346200BNaphthaleneµg/L 47.0 178 10/04/2023 22:346200Bn-Propylbenzene µg/L 19.0 140 10/04/2023 22:346200BStyreneµg/L 22.0 39400 10/05/2023 23:466200BTolueneµg/L 220 1980 10/04/2023 22:346200B1,2,4-Trimethylbenzene µg/L 19.0 486 10/04/2023 22:346200B1,3,5-Trimethylbenzene µg/L 18.0 4780 10/04/2023 22:346200Bo-Xylene µg/L 21.0 10100 10/04/2023 22:346200Bm,p-Xylene µg/L 42.0 14900 10/04/2023 22:346200BXylene (Total)µg/L 21.0 99600 09/28/2023 21:32MADEP-VPH Aliphatic C5-C8 µg/L 1150 32600 09/28/2023 21:32MADEP-VPH Aliphatic C9-C12 µg/L 2580 5310 09/28/2023 21:32MADEP-VPH Aromatic C9-C10 µg/L 402 V 96365MW-101 24000 10/06/2023 00:136200BBenzeneµg/L 180 J26.9 10/04/2023 23:006200Bn-Butylbenzene µg/L 18.0 4000 10/04/2023 23:006200BDi-Isopropyl Ether (DIPE)µg/L 50.0 818 10/04/2023 23:006200B1,2-Dibromoethane µg/L 20.0 1690 10/04/2023 23:006200B1,2-Dichloroethane µg/L 15.0 2770 10/04/2023 23:006200BEthylbenzeneµg/L 17.0 930 10/04/2023 23:006200B2-Hexanone µg/L 38.0 79.9 10/04/2023 23:006200BIsopropylbenzeneµg/L 18.0 1140 10/04/2023 23:006200BMethyl Ethyl Ketone (MEK)µg/L 71.0 Page 6 of 82 Summary of Detected Analytes QualifiersAnalyzedUnitsResult Report Number: Client Sample ID Method Parameters Lab Sample ID 23-270-0005 Report Limit Project:East Lincoln Fire Department V 96365MW-101 938 10/04/2023 23:006200BMethyl tert-butyl ether (MTBE)µg/L 14.0 455 10/04/2023 23:006200B4-Methyl-2-Pentanone µg/L 7.80 1240 10/04/2023 23:006200BNaphthaleneµg/L 47.0 249 10/04/2023 23:006200Bn-Propylbenzene µg/L 19.0 J29.0 10/04/2023 23:006200BStyreneµg/L 22.0 34900 10/06/2023 00:136200BTolueneµg/L 220 2360 10/04/2023 23:006200B1,2,4-Trimethylbenzene µg/L 19.0 577 10/04/2023 23:006200B1,3,5-Trimethylbenzene µg/L 18.0 5510 10/04/2023 23:006200Bo-Xylene µg/L 21.0 11700 10/04/2023 23:006200Bm,p-Xylene µg/L 42.0 17200 10/04/2023 23:006200BXylene (Total)µg/L 21.0 82500 09/28/2023 21:56MADEP-VPH Aliphatic C5-C8 µg/L 1150 33800 09/28/2023 21:56MADEP-VPH Aliphatic C9-C12 µg/L 2580 5720 09/28/2023 21:56MADEP-VPH Aromatic C9-C10 µg/L 402 V 96366MW-103 3120 10/04/2023 23:266200BBenzeneµg/L 18.0 J34.0 10/04/2023 23:266200Bn-Butylbenzene µg/L 18.0 65.6 10/04/2023 23:266200BDi-Isopropyl Ether (DIPE)µg/L 50.0 520 10/04/2023 23:266200BEthylbenzeneµg/L 17.0 J45.4 10/04/2023 23:266200BIsopropylbenzeneµg/L 18.0 123 10/04/2023 23:266200B4-Methyl-2-Pentanone µg/L 7.80 169 10/04/2023 23:266200Bn-Propylbenzene µg/L 19.0 1320 10/04/2023 23:266200BTolueneµg/L 22.0 444 10/04/2023 23:266200B1,2,4-Trimethylbenzene µg/L 19.0 78.2 10/04/2023 23:266200B1,3,5-Trimethylbenzene µg/L 18.0 492 10/04/2023 23:266200Bo-Xylene µg/L 21.0 848 10/04/2023 23:266200Bm,p-Xylene µg/L 42.0 1340 10/04/2023 23:266200BXylene (Total)µg/L 21.0 7800 09/29/2023 07:12MADEP-VPH Aliphatic C5-C8 µg/L 115 5040 09/29/2023 07:12MADEP-VPH Aliphatic C9-C12 µg/L 258 2000 09/29/2023 07:12MADEP-VPH Aromatic C9-C10 µg/L 40.2 Page 7 of 82 Client: CES Group CASE NARRATIVE Project: East Lincoln Fire Department Lab Report Number: 23-270-0005 Date: 10/9/2023 Volatile Organic Compounds - GC/MS Method 6200B Analyte: Bromomethane QC Batch No: V38614/V38613 Recovery for the LCS exceeded the upper acceptance limit. However, all sample results associated with the batch are below the MQL, so this high bias had no impact upon the client data. The results are considered to be acceptable. Analyte: Bromomethane QC Batch No: V38781/V38613 Recovery for the LCS exceeded the upper acceptance limit. However, all sample results associated with the batch are below the MQL, so this high bias had no impact upon the client data. The results are considered to be acceptable. Analyte: Vinyl acetate QC Batch No: V38614/V38613 Relative Percent Difference (RPD) for the duplicate analysis was outside of the allowable QC limits. Page 8 of 82 , REPORT OF ANALYSISReport Number : Project Information : NC 28037 23-270-0005 00012 CES Group 274 N. Hwy 16, Ste 300 Greg Hans Denver Received : 09/27/2023 East Lincoln Fire Department Report Date : 10/09/2023 Sample ID : Lab No : Sampled:MW-201 96357 Matrix: 9/26/2023 10:00 Aqueous Analytical Method: Prep Method: Test Results Units MDL MQL By Analytical Batch Date / Time Analyzed DF 6200 PT 6200B Prep Batch(es):V38613 10/02/23 14:00 <1.80 µg/L 1.80 10.0Acetone 1 10/03/23 08:17 V38614MSA <0.180 µg/L 0.180 0.500Benzene 1 10/03/23 08:17 V38614MSA <0.210 µg/L 0.210 0.500Bromobenzene 1 10/03/23 08:17 V38614MSA <0.420 µg/L 0.420 1.00Bromochloromethane 1 10/03/23 08:17 V38614MSA <0.160 µg/L 0.160 0.500Bromodichloromethane 1 10/03/23 08:17 V38614MSA <1.50 µg/L 1.50 5.00Bromoform 1 10/03/23 08:17 V38614MSA <0.280 µg/L 0.280 1.00Bromomethane 1 10/03/23 08:17 V38614MSA <0.180 µg/L 0.180 0.500n-Butylbenzene 1 10/03/23 08:17 V38614MSA <0.200 µg/L 0.200 0.500sec-Butyl benzene 1 10/03/23 08:17 V38614MSA <0.920 µg/L 0.920 2.00tert-Butyl benzene 1 10/03/23 08:17 V38614MSA <0.180 µg/L 0.180 0.500Carbon Tetrachloride 1 10/03/23 08:17 V38614MSA <0.190 µg/L 0.190 0.500Chlorobenzene 1 10/03/23 08:17 V38614MSA <0.190 µg/L 0.190 0.500Chlorodibromomethane 1 10/03/23 08:17 V38614MSA <0.430 µg/L 0.430 1.00Chloroethane 1 10/03/23 08:17 V38614MSA <0.220 µg/L 0.220 0.500Chloroform 1 10/03/23 08:17 V38614MSA <0.220 µg/L 0.220 0.500Chloromethane 1 10/03/23 08:17 V38614MSA <0.200 µg/L 0.200 0.5002-Chlorotoluene 1 10/03/23 08:17 V38614MSA <0.200 µg/L 0.200 0.5004-Chlorotoluene 1 10/03/23 08:17 V38614MSA <0.500 µg/L 0.500 0.500Di-Isopropyl Ether (DIPE)1 10/03/23 08:17 V38614MSA <1.10 µg/L 1.10 2.001,2-Dibromo-3-Chloropropane 1 10/03/23 08:17 V38614MSA <0.200 µg/L 0.200 0.5001,2-Dibromoethane 1 10/03/23 08:17 V38614MSA <0.230 µg/L 0.230 0.500Dibromomethane 1 10/03/23 08:17 V38614MSA Qualifiers/ Definitions Estimated valueJDilution FactorDF Method Quantitation LimitMQL Page 9 of 82 , REPORT OF ANALYSISReport Number : Project Information : NC 28037 23-270-0005 00012 CES Group 274 N. Hwy 16, Ste 300 Greg Hans Denver Received : 09/27/2023 East Lincoln Fire Department Report Date : 10/09/2023 Sample ID : Lab No : Sampled:MW-201 96357 Matrix: 9/26/2023 10:00 Aqueous Analytical Method: Prep Method: Test Results Units MDL MQL By Analytical Batch Date / Time Analyzed DF 6200 PT 6200B Prep Batch(es):V38613 10/02/23 14:00 <0.220 µg/L 0.220 0.5001,2-Dichlorobenzene 1 10/03/23 08:17 V38614MSA <0.190 µg/L 0.190 0.5001,3-Dichlorobenzene 1 10/03/23 08:17 V38614MSA <0.210 µg/L 0.210 0.5001,4-Dichlorobenzene 1 10/03/23 08:17 V38614MSA <1.20 µg/L 1.20 5.00Dichlorodifluoromethane 1 10/03/23 08:17 V38614MSA <0.240 µg/L 0.240 0.5001,1-Dichloroethane 1 10/03/23 08:17 V38614MSA <0.150 µg/L 0.150 0.5001,2-Dichloroethane 1 10/03/23 08:17 V38614MSA <0.150 µg/L 0.150 0.5001,1-Dichloroethene 1 10/03/23 08:17 V38614MSA <0.200 µg/L 0.200 0.500cis-1,2-Dichloroethene 1 10/03/23 08:17 V38614MSA <0.180 µg/L 0.180 0.500trans-1,2-Dichloroethene 1 10/03/23 08:17 V38614MSA <0.190 µg/L 0.190 0.5001,2-Dichloropropane 1 10/03/23 08:17 V38614MSA <0.130 µg/L 0.130 0.5001,3-Dichloropropane 1 10/03/23 08:17 V38614MSA <0.210 µg/L 0.210 2.002,2-Dichloropropane 1 10/03/23 08:17 V38614MSA <0.200 µg/L 0.200 0.5001,1-Dichloropropene 1 10/03/23 08:17 V38614MSA <0.210 µg/L 0.210 0.500cis-1,3-Dichloropropene 1 10/03/23 08:17 V38614MSA <0.150 µg/L 0.150 0.500trans-1,3-Dichloropropene 1 10/03/23 08:17 V38614MSA <42.0 µg/L 42.0 200Ethanol 1 10/03/23 08:17 V38614MSA <0.170 µg/L 0.170 0.500Ethylbenzene 1 10/03/23 08:17 V38614MSA <0.350 µg/L 0.350 3.00Hexachlorobutadiene 1 10/03/23 08:17 V38614MSA <0.380 µg/L 0.380 1.002-Hexanone 1 10/03/23 08:17 V38614MSA <0.180 µg/L 0.180 0.500Isopropylbenzene 1 10/03/23 08:17 V38614MSA <0.089 µg/L 0.089 0.5004-Isopropyl toluene 1 10/03/23 08:17 V38614MSA <0.710 µg/L 0.710 5.00Methyl Ethyl Ketone (MEK)1 10/03/23 08:17 V38614MSA Qualifiers/ Definitions Estimated valueJDilution FactorDF Method Quantitation LimitMQL Page 10 of 82 , REPORT OF ANALYSISReport Number : Project Information : NC 28037 23-270-0005 00012 CES Group 274 N. Hwy 16, Ste 300 Greg Hans Denver Received : 09/27/2023 East Lincoln Fire Department Report Date : 10/09/2023 Sample ID : Lab No : Sampled:MW-201 96357 Matrix: 9/26/2023 10:00 Aqueous Analytical Method: Prep Method: Test Results Units MDL MQL By Analytical Batch Date / Time Analyzed DF 6200 PT 6200B Prep Batch(es):V38613 10/02/23 14:00 <0.140 µg/L 0.140 1.00Methyl tert-butyl ether (MTBE)1 10/03/23 08:17 V38614MSA <0.078 µg/L 0.078 1.004-Methyl-2-Pentanone 1 10/03/23 08:17 V38614MSA <0.330 µg/L 0.330 2.00Methylene Chloride 1 10/03/23 08:17 V38614MSA <0.470 µg/L 0.470 1.00Naphthalene 1 10/03/23 08:17 V38614MSA <0.190 µg/L 0.190 0.500n-Propylbenzene 1 10/03/23 08:17 V38614MSA <0.220 µg/L 0.220 0.500Styrene 1 10/03/23 08:17 V38614MSA <0.160 µg/L 0.160 0.5001,1,1,2-Tetrachloroethane 1 10/03/23 08:17 V38614MSA <0.160 µg/L 0.160 0.5001,1,2,2-Tetrachloroethane 1 10/03/23 08:17 V38614MSA <0.220 µg/L 0.220 0.500Tetrachloroethene 1 10/03/23 08:17 V38614MSA <0.220 µg/L 0.220 0.500Toluene 1 10/03/23 08:17 V38614MSA <0.380 µg/L 0.380 0.5001,2,3-Trichlorobenzene 1 10/03/23 08:17 V38614MSA <0.310 µg/L 0.310 0.5001,2,4-Trichlorobenzene 1 10/03/23 08:17 V38614MSA <0.160 µg/L 0.160 0.5001,1,1-Trichloroethane 1 10/03/23 08:17 V38614MSA <0.096 µg/L 0.096 0.5001,1,2-Trichloroethane 1 10/03/23 08:17 V38614MSA <0.180 µg/L 0.180 0.500Trichloroethene 1 10/03/23 08:17 V38614MSA <0.180 µg/L 0.180 0.500Trichlorofluoromethane 1 10/03/23 08:17 V38614MSA <0.270 µg/L 0.270 0.5001,2,3-Trichloropropane 1 10/03/23 08:17 V38614MSA <0.190 µg/L 0.190 0.5001,2,4-Trimethylbenzene 1 10/03/23 08:17 V38614MSA <0.180 µg/L 0.180 0.5001,3,5-Trimethylbenzene 1 10/03/23 08:17 V38614MSA <1.00 µg/L 1.00 5.00Vinyl Acetate 1 10/03/23 08:17 V38614MSA <0.170 µg/L 0.170 0.500Vinyl Chloride 1 10/03/23 08:17 V38614MSA <0.210 µg/L 0.210 0.500o-Xylene 1 10/03/23 08:17 V38614MSA Qualifiers/ Definitions Estimated valueJDilution FactorDF Method Quantitation LimitMQL Page 11 of 82 , REPORT OF ANALYSISReport Number : Project Information : NC 28037 23-270-0005 00012 CES Group 274 N. Hwy 16, Ste 300 Greg Hans Denver Received : 09/27/2023 East Lincoln Fire Department Report Date : 10/09/2023 Sample ID : Lab No : Sampled:MW-201 96357 Matrix: 9/26/2023 10:00 Aqueous Analytical Method: Prep Method: Test Results Units MDL MQL By Analytical Batch Date / Time Analyzed DF 6200 PT 6200B Prep Batch(es):V38613 10/02/23 14:00 <0.420 µg/L 0.420 1.00m,p-Xylene 1 10/03/23 08:17 V38614MSA <0.21 µg/L 0.210 0.500Xylene (Total)1 10/03/23 08:17 V38614 Surrogate: 4-Bromofluorobenzene 105 Limits: 70-130%10/03/23 08:171 MSA V38614 Surrogate: Dibromofluoromethane 97.2 Limits: 70-130%10/03/23 08:171 MSA V38614 Surrogate: 1,2-Dichloroethane - d4 90.6 Limits: 70-130%10/03/23 08:171 MSA V38614 Surrogate: Toluene-d8 99.0 Limits: 70-130%10/03/23 08:171 MSA V38614 Qualifiers/ Definitions Estimated valueJDilution FactorDF Method Quantitation LimitMQL Page 12 of 82 , REPORT OF ANALYSISReport Number : Project Information : NC 28037 23-270-0005 00012 CES Group 274 N. Hwy 16, Ste 300 Greg Hans Denver Received : 09/27/2023 East Lincoln Fire Department Report Date : 10/09/2023 Sample ID : Lab No : Sampled:MW-201 96357 Matrix: 9/26/2023 10:00 Aqueous Analytical Method: Prep Method: Test Results Units MDL MQL By Analytical Batch Date / Time Analyzed DF MAVPH (Prep) MADEP-VPH Prep Batch(es):V38469 09/27/23 08:00 <11.5 µg/L 11.5 50.0Aliphatic C5-C8 1 09/27/23 20:17 V38470TBL <25.8 µg/L 25.8 50.0Aliphatic C9-C12 1 09/27/23 20:17 V38470TBL <4.02 µg/L 4.02 50.0Aromatic C9-C10 1 09/27/23 20:17 V38470TBL MADEP-VPHSurrogate: 2,5-Dibromotoluene (FID)91.7 Limits: 70-130%09/27/23 20:171 TBL MADEP-VPHSurrogate: 2,5-Dibromotoluene (PID)90.9 Limits: 70-130%09/27/23 20:171 TBL Qualifiers/ Definitions Estimated valueJDilution FactorDF Method Quantitation LimitMQL Page 13 of 82 , REPORT OF ANALYSISReport Number : Project Information : NC 28037 23-270-0005 00012 CES Group 274 N. Hwy 16, Ste 300 Greg Hans Denver Received : 09/27/2023 East Lincoln Fire Department Report Date : 10/09/2023 Sample ID : Lab No : Sampled:MW-301 96358 Matrix: 9/26/2023 11:00 Aqueous Analytical Method: Prep Method: Test Results Units MDL MQL By Analytical Batch Date / Time Analyzed DF 6200 PT 6200B Prep Batch(es):V38613 10/02/23 14:00 V38659 10/03/23 14:00 <180 µg/L 180 1000Acetone 100 10/03/23 12:40 V38614MSA 6820 µg/L 18.0 50.0Benzene 100 10/03/23 12:40 V38614MSA <21.0 µg/L 21.0 50.0Bromobenzene 100 10/03/23 12:40 V38614MSA <42.0 µg/L 42.0 100Bromochloromethane 100 10/03/23 12:40 V38614MSA <16.0 µg/L 16.0 50.0Bromodichloromethane 100 10/03/23 12:40 V38614MSA <150 µg/L 150 500Bromoform 100 10/03/23 12:40 V38614MSA <28.0 µg/L 28.0 100Bromomethane 100 10/03/23 12:40 V38614MSA <18.0 µg/L 18.0 50.0n-Butylbenzene 100 10/03/23 12:40 V38614MSA <20.0 µg/L 20.0 50.0sec-Butyl benzene 100 10/03/23 12:40 V38614MSA <92.0 µg/L 92.0 200tert-Butyl benzene 100 10/03/23 12:40 V38614MSA <18.0 µg/L 18.0 50.0Carbon Tetrachloride 100 10/03/23 12:40 V38614MSA <19.0 µg/L 19.0 50.0Chlorobenzene 100 10/03/23 12:40 V38614MSA <19.0 µg/L 19.0 50.0Chlorodibromomethane 100 10/03/23 12:40 V38614MSA <43.0 µg/L 43.0 100Chloroethane 100 10/03/23 12:40 V38614MSA <22.0 µg/L 22.0 50.0Chloroform 100 10/03/23 12:40 V38614MSA <22.0 µg/L 22.0 50.0Chloromethane 100 10/03/23 12:40 V38614MSA <20.0 µg/L 20.0 50.02-Chlorotoluene 100 10/03/23 12:40 V38614MSA <20.0 µg/L 20.0 50.04-Chlorotoluene 100 10/03/23 12:40 V38614MSA <50.0 µg/L 50.0 50.0Di-Isopropyl Ether (DIPE)100 10/03/23 12:40 V38614MSA <110 µg/L 110 2001,2-Dibromo-3-Chloropropane 100 10/03/23 12:40 V38614MSA 31.9 J µg/L 20.0 50.01,2-Dibromoethane 100 10/03/23 12:40 V38614MSA <23.0 µg/L 23.0 50.0Dibromomethane 100 10/03/23 12:40 V38614MSA Qualifiers/ Definitions Estimated valueJDilution FactorDF Method Quantitation LimitMQL Page 14 of 82 , REPORT OF ANALYSISReport Number : Project Information : NC 28037 23-270-0005 00012 CES Group 274 N. Hwy 16, Ste 300 Greg Hans Denver Received : 09/27/2023 East Lincoln Fire Department Report Date : 10/09/2023 Sample ID : Lab No : Sampled:MW-301 96358 Matrix: 9/26/2023 11:00 Aqueous Analytical Method: Prep Method: Test Results Units MDL MQL By Analytical Batch Date / Time Analyzed DF 6200 PT 6200B Prep Batch(es):V38613 10/02/23 14:00 V38659 10/03/23 14:00 <22.0 µg/L 22.0 50.01,2-Dichlorobenzene 100 10/03/23 12:40 V38614MSA <19.0 µg/L 19.0 50.01,3-Dichlorobenzene 100 10/03/23 12:40 V38614MSA <21.0 µg/L 21.0 50.01,4-Dichlorobenzene 100 10/03/23 12:40 V38614MSA <120 µg/L 120 500Dichlorodifluoromethane 100 10/03/23 12:40 V38614MSA <24.0 µg/L 24.0 50.01,1-Dichloroethane 100 10/03/23 12:40 V38614MSA <15.0 µg/L 15.0 50.01,2-Dichloroethane 100 10/03/23 12:40 V38614MSA <15.0 µg/L 15.0 50.01,1-Dichloroethene 100 10/03/23 12:40 V38614MSA <20.0 µg/L 20.0 50.0cis-1,2-Dichloroethene 100 10/03/23 12:40 V38614MSA <18.0 µg/L 18.0 50.0trans-1,2-Dichloroethene 100 10/03/23 12:40 V38614MSA <19.0 µg/L 19.0 50.01,2-Dichloropropane 100 10/03/23 12:40 V38614MSA <13.0 µg/L 13.0 50.01,3-Dichloropropane 100 10/03/23 12:40 V38614MSA <21.0 µg/L 21.0 2002,2-Dichloropropane 100 10/03/23 12:40 V38614MSA <20.0 µg/L 20.0 50.01,1-Dichloropropene 100 10/03/23 12:40 V38614MSA <21.0 µg/L 21.0 50.0cis-1,3-Dichloropropene 100 10/03/23 12:40 V38614MSA <15.0 µg/L 15.0 50.0trans-1,3-Dichloropropene 100 10/03/23 12:40 V38614MSA <4200 µg/L 4200 20000Ethanol 100 10/03/23 12:40 V38614MSA 2710 µg/L 17.0 50.0Ethylbenzene 100 10/03/23 12:40 V38614MSA <35.0 µg/L 35.0 300Hexachlorobutadiene 100 10/03/23 12:40 V38614MSA 577 µg/L 38.0 1002-Hexanone 100 10/03/23 12:40 V38614MSA 89.6 µg/L 18.0 50.0Isopropylbenzene 100 10/03/23 12:40 V38614MSA <8.90 µg/L 8.90 50.04-Isopropyl toluene 100 10/03/23 12:40 V38614MSA 795 µg/L 71.0 500Methyl Ethyl Ketone (MEK)100 10/03/23 12:40 V38614MSA Qualifiers/ Definitions Estimated valueJDilution FactorDF Method Quantitation LimitMQL Page 15 of 82 , REPORT OF ANALYSISReport Number : Project Information : NC 28037 23-270-0005 00012 CES Group 274 N. Hwy 16, Ste 300 Greg Hans Denver Received : 09/27/2023 East Lincoln Fire Department Report Date : 10/09/2023 Sample ID : Lab No : Sampled:MW-301 96358 Matrix: 9/26/2023 11:00 Aqueous Analytical Method: Prep Method: Test Results Units MDL MQL By Analytical Batch Date / Time Analyzed DF 6200 PT 6200B Prep Batch(es):V38613 10/02/23 14:00 V38659 10/03/23 14:00 <14.0 µg/L 14.0 100Methyl tert-butyl ether (MTBE)100 10/03/23 12:40 V38614MSA 282 µg/L 7.80 1004-Methyl-2-Pentanone 100 10/03/23 12:40 V38614MSA <33.0 µg/L 33.0 200Methylene Chloride 100 10/03/23 12:40 V38614MSA 1200 µg/L 47.0 100Naphthalene 100 10/03/23 12:40 V38614MSA 238 µg/L 19.0 50.0n-Propylbenzene 100 10/03/23 12:40 V38614MSA 28.2 J µg/L 22.0 50.0Styrene 100 10/03/23 12:40 V38614MSA <16.0 µg/L 16.0 50.01,1,1,2-Tetrachloroethane 100 10/03/23 12:40 V38614MSA <16.0 µg/L 16.0 50.01,1,2,2-Tetrachloroethane 100 10/03/23 12:40 V38614MSA <22.0 µg/L 22.0 50.0Tetrachloroethene 100 10/03/23 12:40 V38614MSA 28400 µg/L 220 500Toluene 1000 10/04/23 00:16 V38660MSA <38.0 µg/L 38.0 50.01,2,3-Trichlorobenzene 100 10/03/23 12:40 V38614MSA <31.0 µg/L 31.0 50.01,2,4-Trichlorobenzene 100 10/03/23 12:40 V38614MSA <16.0 µg/L 16.0 50.01,1,1-Trichloroethane 100 10/03/23 12:40 V38614MSA <9.60 µg/L 9.60 50.01,1,2-Trichloroethane 100 10/03/23 12:40 V38614MSA <18.0 µg/L 18.0 50.0Trichloroethene 100 10/03/23 12:40 V38614MSA <18.0 µg/L 18.0 50.0Trichlorofluoromethane 100 10/03/23 12:40 V38614MSA <27.0 µg/L 27.0 50.01,2,3-Trichloropropane 100 10/03/23 12:40 V38614MSA 2150 µg/L 19.0 50.01,2,4-Trimethylbenzene 100 10/03/23 12:40 V38614MSA 537 µg/L 18.0 50.01,3,5-Trimethylbenzene 100 10/03/23 12:40 V38614MSA <100 µg/L 100 500Vinyl Acetate 100 10/03/23 12:40 V38614MSA <17.0 µg/L 17.0 50.0Vinyl Chloride 100 10/03/23 12:40 V38614MSA 4950 µg/L 21.0 50.0o-Xylene 100 10/03/23 12:40 V38614MSA Qualifiers/ Definitions Estimated valueJDilution FactorDF Method Quantitation LimitMQL Page 16 of 82 , REPORT OF ANALYSISReport Number : Project Information : NC 28037 23-270-0005 00012 CES Group 274 N. Hwy 16, Ste 300 Greg Hans Denver Received : 09/27/2023 East Lincoln Fire Department Report Date : 10/09/2023 Sample ID : Lab No : Sampled:MW-301 96358 Matrix: 9/26/2023 11:00 Aqueous Analytical Method: Prep Method: Test Results Units MDL MQL By Analytical Batch Date / Time Analyzed DF 6200 PT 6200B Prep Batch(es):V38613 10/02/23 14:00 V38659 10/03/23 14:00 10200 µg/L 42.0 100m,p-Xylene 100 10/03/23 12:40 V38614MSA 15200 µg/L 21.0 50.0Xylene (Total)100 10/03/23 12:40 V38614 Surrogate: 4-Bromofluorobenzene 106 Limits: 70-130%10/03/23 12:40100 MSA V38614 Surrogate: Dibromofluoromethane 95.0 Limits: 70-130%10/03/23 12:40100 MSA V38614 Surrogate: 1,2-Dichloroethane - d4 90.0 Limits: 70-130%10/03/23 12:40100 MSA V38614 Surrogate: Toluene-d8 99.0 Limits: 70-130%10/03/23 12:40100 MSA V38614 Surrogate: 4-Bromofluorobenzene 105 Limits: 70-130%10/04/23 00:161000 MSA V38660 Surrogate: Dibromofluoromethane 96.2 Limits: 70-130%10/04/23 00:161000 MSA V38660 Surrogate: 1,2-Dichloroethane - d4 86.4 Limits: 70-130%10/04/23 00:161000 MSA V38660 Surrogate: Toluene-d8 99.4 Limits: 70-130%10/04/23 00:161000 MSA V38660 Qualifiers/ Definitions Estimated valueJDilution FactorDF Method Quantitation LimitMQL Page 17 of 82 , REPORT OF ANALYSISReport Number : Project Information : NC 28037 23-270-0005 00012 CES Group 274 N. Hwy 16, Ste 300 Greg Hans Denver Received : 09/27/2023 East Lincoln Fire Department Report Date : 10/09/2023 Sample ID : Lab No : Sampled:MW-301 96358 Matrix: 9/26/2023 11:00 Aqueous Analytical Method: Prep Method: Test Results Units MDL MQL By Analytical Batch Date / Time Analyzed DF MAVPH (Prep) MADEP-VPH Prep Batch(es):V38482 09/28/23 08:00 61000 µg/L 1150 5000Aliphatic C5-C8 100 09/28/23 19:56 V38483TBL 34800 µg/L 2580 5000Aliphatic C9-C12 100 09/28/23 19:56 V38483TBL 5910 µg/L 402 5000Aromatic C9-C10 100 09/28/23 19:56 V38483TBL MADEP-VPHSurrogate: 2,5-Dibromotoluene (FID)88.0 Limits: 70-130%09/28/23 19:56100 TBL MADEP-VPHSurrogate: 2,5-Dibromotoluene (PID)79.2 Limits: 70-130%09/28/23 19:56100 TBL Qualifiers/ Definitions Estimated valueJDilution FactorDF Method Quantitation LimitMQL Page 18 of 82 , REPORT OF ANALYSISReport Number : Project Information : NC 28037 23-270-0005 00012 CES Group 274 N. Hwy 16, Ste 300 Greg Hans Denver Received : 09/27/2023 East Lincoln Fire Department Report Date : 10/09/2023 Sample ID : Lab No : Sampled:MW-203 96359 Matrix: 9/26/2023 11:30 Aqueous Analytical Method: Prep Method: Test Results Units MDL MQL By Analytical Batch Date / Time Analyzed DF 6200 PT 6200B Prep Batch(es):V38613 10/02/23 14:00 <1.80 µg/L 1.80 10.0Acetone 1 10/03/23 08:43 V38614MSA <0.180 µg/L 0.180 0.500Benzene 1 10/03/23 08:43 V38614MSA <0.210 µg/L 0.210 0.500Bromobenzene 1 10/03/23 08:43 V38614MSA <0.420 µg/L 0.420 1.00Bromochloromethane 1 10/03/23 08:43 V38614MSA <0.160 µg/L 0.160 0.500Bromodichloromethane 1 10/03/23 08:43 V38614MSA <1.50 µg/L 1.50 5.00Bromoform 1 10/03/23 08:43 V38614MSA <0.280 µg/L 0.280 1.00Bromomethane 1 10/03/23 08:43 V38614MSA <0.180 µg/L 0.180 0.500n-Butylbenzene 1 10/03/23 08:43 V38614MSA <0.200 µg/L 0.200 0.500sec-Butyl benzene 1 10/03/23 08:43 V38614MSA <0.920 µg/L 0.920 2.00tert-Butyl benzene 1 10/03/23 08:43 V38614MSA <0.180 µg/L 0.180 0.500Carbon Tetrachloride 1 10/03/23 08:43 V38614MSA <0.190 µg/L 0.190 0.500Chlorobenzene 1 10/03/23 08:43 V38614MSA <0.190 µg/L 0.190 0.500Chlorodibromomethane 1 10/03/23 08:43 V38614MSA <0.430 µg/L 0.430 1.00Chloroethane 1 10/03/23 08:43 V38614MSA <0.220 µg/L 0.220 0.500Chloroform 1 10/03/23 08:43 V38614MSA <0.220 µg/L 0.220 0.500Chloromethane 1 10/03/23 08:43 V38614MSA <0.200 µg/L 0.200 0.5002-Chlorotoluene 1 10/03/23 08:43 V38614MSA <0.200 µg/L 0.200 0.5004-Chlorotoluene 1 10/03/23 08:43 V38614MSA <0.500 µg/L 0.500 0.500Di-Isopropyl Ether (DIPE)1 10/03/23 08:43 V38614MSA <1.10 µg/L 1.10 2.001,2-Dibromo-3-Chloropropane 1 10/03/23 08:43 V38614MSA <0.200 µg/L 0.200 0.5001,2-Dibromoethane 1 10/03/23 08:43 V38614MSA <0.230 µg/L 0.230 0.500Dibromomethane 1 10/03/23 08:43 V38614MSA Qualifiers/ Definitions Estimated valueJDilution FactorDF Method Quantitation LimitMQL Page 19 of 82 , REPORT OF ANALYSISReport Number : Project Information : NC 28037 23-270-0005 00012 CES Group 274 N. Hwy 16, Ste 300 Greg Hans Denver Received : 09/27/2023 East Lincoln Fire Department Report Date : 10/09/2023 Sample ID : Lab No : Sampled:MW-203 96359 Matrix: 9/26/2023 11:30 Aqueous Analytical Method: Prep Method: Test Results Units MDL MQL By Analytical Batch Date / Time Analyzed DF 6200 PT 6200B Prep Batch(es):V38613 10/02/23 14:00 <0.220 µg/L 0.220 0.5001,2-Dichlorobenzene 1 10/03/23 08:43 V38614MSA <0.190 µg/L 0.190 0.5001,3-Dichlorobenzene 1 10/03/23 08:43 V38614MSA <0.210 µg/L 0.210 0.5001,4-Dichlorobenzene 1 10/03/23 08:43 V38614MSA <1.20 µg/L 1.20 5.00Dichlorodifluoromethane 1 10/03/23 08:43 V38614MSA <0.240 µg/L 0.240 0.5001,1-Dichloroethane 1 10/03/23 08:43 V38614MSA <0.150 µg/L 0.150 0.5001,2-Dichloroethane 1 10/03/23 08:43 V38614MSA <0.150 µg/L 0.150 0.5001,1-Dichloroethene 1 10/03/23 08:43 V38614MSA <0.200 µg/L 0.200 0.500cis-1,2-Dichloroethene 1 10/03/23 08:43 V38614MSA <0.180 µg/L 0.180 0.500trans-1,2-Dichloroethene 1 10/03/23 08:43 V38614MSA <0.190 µg/L 0.190 0.5001,2-Dichloropropane 1 10/03/23 08:43 V38614MSA <0.130 µg/L 0.130 0.5001,3-Dichloropropane 1 10/03/23 08:43 V38614MSA <0.210 µg/L 0.210 2.002,2-Dichloropropane 1 10/03/23 08:43 V38614MSA <0.200 µg/L 0.200 0.5001,1-Dichloropropene 1 10/03/23 08:43 V38614MSA <0.210 µg/L 0.210 0.500cis-1,3-Dichloropropene 1 10/03/23 08:43 V38614MSA <0.150 µg/L 0.150 0.500trans-1,3-Dichloropropene 1 10/03/23 08:43 V38614MSA <42.0 µg/L 42.0 200Ethanol 1 10/03/23 08:43 V38614MSA <0.170 µg/L 0.170 0.500Ethylbenzene 1 10/03/23 08:43 V38614MSA <0.350 µg/L 0.350 3.00Hexachlorobutadiene 1 10/03/23 08:43 V38614MSA <0.380 µg/L 0.380 1.002-Hexanone 1 10/03/23 08:43 V38614MSA <0.180 µg/L 0.180 0.500Isopropylbenzene 1 10/03/23 08:43 V38614MSA <0.089 µg/L 0.089 0.5004-Isopropyl toluene 1 10/03/23 08:43 V38614MSA <0.710 µg/L 0.710 5.00Methyl Ethyl Ketone (MEK)1 10/03/23 08:43 V38614MSA Qualifiers/ Definitions Estimated valueJDilution FactorDF Method Quantitation LimitMQL Page 20 of 82 , REPORT OF ANALYSISReport Number : Project Information : NC 28037 23-270-0005 00012 CES Group 274 N. Hwy 16, Ste 300 Greg Hans Denver Received : 09/27/2023 East Lincoln Fire Department Report Date : 10/09/2023 Sample ID : Lab No : Sampled:MW-203 96359 Matrix: 9/26/2023 11:30 Aqueous Analytical Method: Prep Method: Test Results Units MDL MQL By Analytical Batch Date / Time Analyzed DF 6200 PT 6200B Prep Batch(es):V38613 10/02/23 14:00 <0.140 µg/L 0.140 1.00Methyl tert-butyl ether (MTBE)1 10/03/23 08:43 V38614MSA <0.078 µg/L 0.078 1.004-Methyl-2-Pentanone 1 10/03/23 08:43 V38614MSA <0.330 µg/L 0.330 2.00Methylene Chloride 1 10/03/23 08:43 V38614MSA <0.470 µg/L 0.470 1.00Naphthalene 1 10/03/23 08:43 V38614MSA <0.190 µg/L 0.190 0.500n-Propylbenzene 1 10/03/23 08:43 V38614MSA <0.220 µg/L 0.220 0.500Styrene 1 10/03/23 08:43 V38614MSA <0.160 µg/L 0.160 0.5001,1,1,2-Tetrachloroethane 1 10/03/23 08:43 V38614MSA <0.160 µg/L 0.160 0.5001,1,2,2-Tetrachloroethane 1 10/03/23 08:43 V38614MSA <0.220 µg/L 0.220 0.500Tetrachloroethene 1 10/03/23 08:43 V38614MSA 0.300 J µg/L 0.220 0.500Toluene 1 10/03/23 08:43 V38614MSA <0.380 µg/L 0.380 0.5001,2,3-Trichlorobenzene 1 10/03/23 08:43 V38614MSA <0.310 µg/L 0.310 0.5001,2,4-Trichlorobenzene 1 10/03/23 08:43 V38614MSA <0.160 µg/L 0.160 0.5001,1,1-Trichloroethane 1 10/03/23 08:43 V38614MSA <0.096 µg/L 0.096 0.5001,1,2-Trichloroethane 1 10/03/23 08:43 V38614MSA <0.180 µg/L 0.180 0.500Trichloroethene 1 10/03/23 08:43 V38614MSA <0.180 µg/L 0.180 0.500Trichlorofluoromethane 1 10/03/23 08:43 V38614MSA <0.270 µg/L 0.270 0.5001,2,3-Trichloropropane 1 10/03/23 08:43 V38614MSA <0.190 µg/L 0.190 0.5001,2,4-Trimethylbenzene 1 10/03/23 08:43 V38614MSA <0.180 µg/L 0.180 0.5001,3,5-Trimethylbenzene 1 10/03/23 08:43 V38614MSA <1.00 µg/L 1.00 5.00Vinyl Acetate 1 10/03/23 08:43 V38614MSA <0.170 µg/L 0.170 0.500Vinyl Chloride 1 10/03/23 08:43 V38614MSA <0.210 µg/L 0.210 0.500o-Xylene 1 10/03/23 08:43 V38614MSA Qualifiers/ Definitions Estimated valueJDilution FactorDF Method Quantitation LimitMQL Page 21 of 82 , REPORT OF ANALYSISReport Number : Project Information : NC 28037 23-270-0005 00012 CES Group 274 N. Hwy 16, Ste 300 Greg Hans Denver Received : 09/27/2023 East Lincoln Fire Department Report Date : 10/09/2023 Sample ID : Lab No : Sampled:MW-203 96359 Matrix: 9/26/2023 11:30 Aqueous Analytical Method: Prep Method: Test Results Units MDL MQL By Analytical Batch Date / Time Analyzed DF 6200 PT 6200B Prep Batch(es):V38613 10/02/23 14:00 <0.420 µg/L 0.420 1.00m,p-Xylene 1 10/03/23 08:43 V38614MSA <0.21 µg/L 0.210 0.500Xylene (Total)1 10/03/23 08:43 V38614 Surrogate: 4-Bromofluorobenzene 104 Limits: 70-130%10/03/23 08:431 MSA V38614 Surrogate: Dibromofluoromethane 96.6 Limits: 70-130%10/03/23 08:431 MSA V38614 Surrogate: 1,2-Dichloroethane - d4 89.4 Limits: 70-130%10/03/23 08:431 MSA V38614 Surrogate: Toluene-d8 99.2 Limits: 70-130%10/03/23 08:431 MSA V38614 Qualifiers/ Definitions Estimated valueJDilution FactorDF Method Quantitation LimitMQL Page 22 of 82 , REPORT OF ANALYSISReport Number : Project Information : NC 28037 23-270-0005 00012 CES Group 274 N. Hwy 16, Ste 300 Greg Hans Denver Received : 09/27/2023 East Lincoln Fire Department Report Date : 10/09/2023 Sample ID : Lab No : Sampled:MW-203 96359 Matrix: 9/26/2023 11:30 Aqueous Analytical Method: Prep Method: Test Results Units MDL MQL By Analytical Batch Date / Time Analyzed DF MAVPH (Prep) MADEP-VPH Prep Batch(es):V38469 09/27/23 08:00 <11.5 µg/L 11.5 50.0Aliphatic C5-C8 1 09/27/23 21:04 V38470TBL <25.8 µg/L 25.8 50.0Aliphatic C9-C12 1 09/27/23 21:04 V38470TBL <4.02 µg/L 4.02 50.0Aromatic C9-C10 1 09/27/23 21:04 V38470TBL MADEP-VPHSurrogate: 2,5-Dibromotoluene (FID)91.0 Limits: 70-130%09/27/23 21:041 TBL MADEP-VPHSurrogate: 2,5-Dibromotoluene (PID)78.6 Limits: 70-130%09/27/23 21:041 TBL Qualifiers/ Definitions Estimated valueJDilution FactorDF Method Quantitation LimitMQL Page 23 of 82 , REPORT OF ANALYSISReport Number : Project Information : NC 28037 23-270-0005 00012 CES Group 274 N. Hwy 16, Ste 300 Greg Hans Denver Received : 09/27/2023 East Lincoln Fire Department Report Date : 10/09/2023 Sample ID : Lab No : Sampled:MW-501 96360 Matrix: 9/26/2023 12:00 Aqueous Analytical Method: Prep Method: Test Results Units MDL MQL By Analytical Batch Date / Time Analyzed DF 6200 PT 6200B Prep Batch(es):V38613 10/02/23 14:00 <180 µg/L 180 1000Acetone 100 10/03/23 13:07 V38614MSA 440 µg/L 18.0 50.0Benzene 100 10/03/23 13:07 V38614MSA <21.0 µg/L 21.0 50.0Bromobenzene 100 10/03/23 13:07 V38614MSA <42.0 µg/L 42.0 100Bromochloromethane 100 10/03/23 13:07 V38614MSA <16.0 µg/L 16.0 50.0Bromodichloromethane 100 10/03/23 13:07 V38614MSA <150 µg/L 150 500Bromoform 100 10/03/23 13:07 V38614MSA <28.0 µg/L 28.0 100Bromomethane 100 10/03/23 13:07 V38614MSA <18.0 µg/L 18.0 50.0n-Butylbenzene 100 10/03/23 13:07 V38614MSA <20.0 µg/L 20.0 50.0sec-Butyl benzene 100 10/03/23 13:07 V38614MSA <92.0 µg/L 92.0 200tert-Butyl benzene 100 10/03/23 13:07 V38614MSA <18.0 µg/L 18.0 50.0Carbon Tetrachloride 100 10/03/23 13:07 V38614MSA <19.0 µg/L 19.0 50.0Chlorobenzene 100 10/03/23 13:07 V38614MSA <19.0 µg/L 19.0 50.0Chlorodibromomethane 100 10/03/23 13:07 V38614MSA <43.0 µg/L 43.0 100Chloroethane 100 10/03/23 13:07 V38614MSA <22.0 µg/L 22.0 50.0Chloroform 100 10/03/23 13:07 V38614MSA <22.0 µg/L 22.0 50.0Chloromethane 100 10/03/23 13:07 V38614MSA <20.0 µg/L 20.0 50.02-Chlorotoluene 100 10/03/23 13:07 V38614MSA <20.0 µg/L 20.0 50.04-Chlorotoluene 100 10/03/23 13:07 V38614MSA <50.0 µg/L 50.0 50.0Di-Isopropyl Ether (DIPE)100 10/03/23 13:07 V38614MSA <110 µg/L 110 2001,2-Dibromo-3-Chloropropane 100 10/03/23 13:07 V38614MSA <20.0 µg/L 20.0 50.01,2-Dibromoethane 100 10/03/23 13:07 V38614MSA <23.0 µg/L 23.0 50.0Dibromomethane 100 10/03/23 13:07 V38614MSA Qualifiers/ Definitions Estimated valueJDilution FactorDF Method Quantitation LimitMQL Page 24 of 82 , REPORT OF ANALYSISReport Number : Project Information : NC 28037 23-270-0005 00012 CES Group 274 N. Hwy 16, Ste 300 Greg Hans Denver Received : 09/27/2023 East Lincoln Fire Department Report Date : 10/09/2023 Sample ID : Lab No : Sampled:MW-501 96360 Matrix: 9/26/2023 12:00 Aqueous Analytical Method: Prep Method: Test Results Units MDL MQL By Analytical Batch Date / Time Analyzed DF 6200 PT 6200B Prep Batch(es):V38613 10/02/23 14:00 <22.0 µg/L 22.0 50.01,2-Dichlorobenzene 100 10/03/23 13:07 V38614MSA <19.0 µg/L 19.0 50.01,3-Dichlorobenzene 100 10/03/23 13:07 V38614MSA <21.0 µg/L 21.0 50.01,4-Dichlorobenzene 100 10/03/23 13:07 V38614MSA <120 µg/L 120 500Dichlorodifluoromethane 100 10/03/23 13:07 V38614MSA <24.0 µg/L 24.0 50.01,1-Dichloroethane 100 10/03/23 13:07 V38614MSA <15.0 µg/L 15.0 50.01,2-Dichloroethane 100 10/03/23 13:07 V38614MSA <15.0 µg/L 15.0 50.01,1-Dichloroethene 100 10/03/23 13:07 V38614MSA <20.0 µg/L 20.0 50.0cis-1,2-Dichloroethene 100 10/03/23 13:07 V38614MSA <18.0 µg/L 18.0 50.0trans-1,2-Dichloroethene 100 10/03/23 13:07 V38614MSA <19.0 µg/L 19.0 50.01,2-Dichloropropane 100 10/03/23 13:07 V38614MSA <13.0 µg/L 13.0 50.01,3-Dichloropropane 100 10/03/23 13:07 V38614MSA <21.0 µg/L 21.0 2002,2-Dichloropropane 100 10/03/23 13:07 V38614MSA <20.0 µg/L 20.0 50.01,1-Dichloropropene 100 10/03/23 13:07 V38614MSA <21.0 µg/L 21.0 50.0cis-1,3-Dichloropropene 100 10/03/23 13:07 V38614MSA <15.0 µg/L 15.0 50.0trans-1,3-Dichloropropene 100 10/03/23 13:07 V38614MSA <4200 µg/L 4200 20000Ethanol 100 10/03/23 13:07 V38614MSA 1940 µg/L 17.0 50.0Ethylbenzene 100 10/03/23 13:07 V38614MSA <35.0 µg/L 35.0 300Hexachlorobutadiene 100 10/03/23 13:07 V38614MSA <38.0 µg/L 38.0 1002-Hexanone 100 10/03/23 13:07 V38614MSA 86.2 µg/L 18.0 50.0Isopropylbenzene 100 10/03/23 13:07 V38614MSA <8.90 µg/L 8.90 50.04-Isopropyl toluene 100 10/03/23 13:07 V38614MSA <71.0 µg/L 71.0 500Methyl Ethyl Ketone (MEK)100 10/03/23 13:07 V38614MSA Qualifiers/ Definitions Estimated valueJDilution FactorDF Method Quantitation LimitMQL Page 25 of 82 , REPORT OF ANALYSISReport Number : Project Information : NC 28037 23-270-0005 00012 CES Group 274 N. Hwy 16, Ste 300 Greg Hans Denver Received : 09/27/2023 East Lincoln Fire Department Report Date : 10/09/2023 Sample ID : Lab No : Sampled:MW-501 96360 Matrix: 9/26/2023 12:00 Aqueous Analytical Method: Prep Method: Test Results Units MDL MQL By Analytical Batch Date / Time Analyzed DF 6200 PT 6200B Prep Batch(es):V38613 10/02/23 14:00 <14.0 µg/L 14.0 100Methyl tert-butyl ether (MTBE)100 10/03/23 13:07 V38614MSA <7.80 µg/L 7.80 1004-Methyl-2-Pentanone 100 10/03/23 13:07 V38614MSA <33.0 µg/L 33.0 200Methylene Chloride 100 10/03/23 13:07 V38614MSA 1210 µg/L 47.0 100Naphthalene 100 10/03/23 13:07 V38614MSA 209 µg/L 19.0 50.0n-Propylbenzene 100 10/03/23 13:07 V38614MSA 55.5 µg/L 22.0 50.0Styrene 100 10/03/23 13:07 V38614MSA <16.0 µg/L 16.0 50.01,1,1,2-Tetrachloroethane 100 10/03/23 13:07 V38614MSA <16.0 µg/L 16.0 50.01,1,2,2-Tetrachloroethane 100 10/03/23 13:07 V38614MSA <22.0 µg/L 22.0 50.0Tetrachloroethene 100 10/03/23 13:07 V38614MSA 5770 µg/L 22.0 50.0Toluene 100 10/03/23 13:07 V38614MSA <38.0 µg/L 38.0 50.01,2,3-Trichlorobenzene 100 10/03/23 13:07 V38614MSA <31.0 µg/L 31.0 50.01,2,4-Trichlorobenzene 100 10/03/23 13:07 V38614MSA <16.0 µg/L 16.0 50.01,1,1-Trichloroethane 100 10/03/23 13:07 V38614MSA <9.60 µg/L 9.60 50.01,1,2-Trichloroethane 100 10/03/23 13:07 V38614MSA <18.0 µg/L 18.0 50.0Trichloroethene 100 10/03/23 13:07 V38614MSA <18.0 µg/L 18.0 50.0Trichlorofluoromethane 100 10/03/23 13:07 V38614MSA <27.0 µg/L 27.0 50.01,2,3-Trichloropropane 100 10/03/23 13:07 V38614MSA 2800 µg/L 19.0 50.01,2,4-Trimethylbenzene 100 10/03/23 13:07 V38614MSA 761 µg/L 18.0 50.01,3,5-Trimethylbenzene 100 10/03/23 13:07 V38614MSA <100 µg/L 100 500Vinyl Acetate 100 10/03/23 13:07 V38614MSA <17.0 µg/L 17.0 50.0Vinyl Chloride 100 10/03/23 13:07 V38614MSA 4210 µg/L 21.0 50.0o-Xylene 100 10/03/23 13:07 V38614MSA Qualifiers/ Definitions Estimated valueJDilution FactorDF Method Quantitation LimitMQL Page 26 of 82 , REPORT OF ANALYSISReport Number : Project Information : NC 28037 23-270-0005 00012 CES Group 274 N. Hwy 16, Ste 300 Greg Hans Denver Received : 09/27/2023 East Lincoln Fire Department Report Date : 10/09/2023 Sample ID : Lab No : Sampled:MW-501 96360 Matrix: 9/26/2023 12:00 Aqueous Analytical Method: Prep Method: Test Results Units MDL MQL By Analytical Batch Date / Time Analyzed DF 6200 PT 6200B Prep Batch(es):V38613 10/02/23 14:00 9430 µg/L 42.0 100m,p-Xylene 100 10/03/23 13:07 V38614MSA 13600 µg/L 21.0 50.0Xylene (Total)100 10/03/23 13:07 V38614 Surrogate: 4-Bromofluorobenzene 103 Limits: 70-130%10/03/23 13:07100 MSA V38614 Surrogate: Dibromofluoromethane 96.4 Limits: 70-130%10/03/23 13:07100 MSA V38614 Surrogate: 1,2-Dichloroethane - d4 89.6 Limits: 70-130%10/03/23 13:07100 MSA V38614 Surrogate: Toluene-d8 98.4 Limits: 70-130%10/03/23 13:07100 MSA V38614 Qualifiers/ Definitions Estimated valueJDilution FactorDF Method Quantitation LimitMQL Page 27 of 82 , REPORT OF ANALYSISReport Number : Project Information : NC 28037 23-270-0005 00012 CES Group 274 N. Hwy 16, Ste 300 Greg Hans Denver Received : 09/27/2023 East Lincoln Fire Department Report Date : 10/09/2023 Sample ID : Lab No : Sampled:MW-501 96360 Matrix: 9/26/2023 12:00 Aqueous Analytical Method: Prep Method: Test Results Units MDL MQL By Analytical Batch Date / Time Analyzed DF MAVPH (Prep) MADEP-VPH Prep Batch(es):V38482 09/28/23 08:00 13800 µg/L 1150 5000Aliphatic C5-C8 100 09/28/23 20:20 V38483TBL 35500 µg/L 2580 5000Aliphatic C9-C12 100 09/28/23 20:20 V38483TBL 7840 µg/L 402 5000Aromatic C9-C10 100 09/28/23 20:20 V38483TBL MADEP-VPHSurrogate: 2,5-Dibromotoluene (FID)103 Limits: 70-130%09/28/23 20:20100 TBL MADEP-VPHSurrogate: 2,5-Dibromotoluene (PID)81.3 Limits: 70-130%09/28/23 20:20100 TBL Qualifiers/ Definitions Estimated valueJDilution FactorDF Method Quantitation LimitMQL Page 28 of 82 , REPORT OF ANALYSISReport Number : Project Information : NC 28037 23-270-0005 00012 CES Group 274 N. Hwy 16, Ste 300 Greg Hans Denver Received : 09/27/2023 East Lincoln Fire Department Report Date : 10/09/2023 Sample ID : Lab No : Sampled:MW-402 96361 Matrix: 9/26/2023 12:30 Aqueous Analytical Method: Prep Method: Test Results Units MDL MQL By Analytical Batch Date / Time Analyzed DF 6200 PT 6200B Prep Batch(es):V38613 10/02/23 14:00 <1.80 µg/L 1.80 10.0Acetone 1 10/03/23 09:10 V38614MSA <0.180 µg/L 0.180 0.500Benzene 1 10/03/23 09:10 V38614MSA <0.210 µg/L 0.210 0.500Bromobenzene 1 10/03/23 09:10 V38614MSA <0.420 µg/L 0.420 1.00Bromochloromethane 1 10/03/23 09:10 V38614MSA <0.160 µg/L 0.160 0.500Bromodichloromethane 1 10/03/23 09:10 V38614MSA <1.50 µg/L 1.50 5.00Bromoform 1 10/03/23 09:10 V38614MSA <0.280 µg/L 0.280 1.00Bromomethane 1 10/03/23 09:10 V38614MSA <0.180 µg/L 0.180 0.500n-Butylbenzene 1 10/03/23 09:10 V38614MSA <0.200 µg/L 0.200 0.500sec-Butyl benzene 1 10/03/23 09:10 V38614MSA <0.920 µg/L 0.920 2.00tert-Butyl benzene 1 10/03/23 09:10 V38614MSA <0.180 µg/L 0.180 0.500Carbon Tetrachloride 1 10/03/23 09:10 V38614MSA <0.190 µg/L 0.190 0.500Chlorobenzene 1 10/03/23 09:10 V38614MSA <0.190 µg/L 0.190 0.500Chlorodibromomethane 1 10/03/23 09:10 V38614MSA <0.430 µg/L 0.430 1.00Chloroethane 1 10/03/23 09:10 V38614MSA <0.220 µg/L 0.220 0.500Chloroform 1 10/03/23 09:10 V38614MSA <0.220 µg/L 0.220 0.500Chloromethane 1 10/03/23 09:10 V38614MSA <0.200 µg/L 0.200 0.5002-Chlorotoluene 1 10/03/23 09:10 V38614MSA <0.200 µg/L 0.200 0.5004-Chlorotoluene 1 10/03/23 09:10 V38614MSA <0.500 µg/L 0.500 0.500Di-Isopropyl Ether (DIPE)1 10/03/23 09:10 V38614MSA <1.10 µg/L 1.10 2.001,2-Dibromo-3-Chloropropane 1 10/03/23 09:10 V38614MSA <0.200 µg/L 0.200 0.5001,2-Dibromoethane 1 10/03/23 09:10 V38614MSA <0.230 µg/L 0.230 0.500Dibromomethane 1 10/03/23 09:10 V38614MSA Qualifiers/ Definitions Estimated valueJDilution FactorDF Method Quantitation LimitMQL Page 29 of 82 , REPORT OF ANALYSISReport Number : Project Information : NC 28037 23-270-0005 00012 CES Group 274 N. Hwy 16, Ste 300 Greg Hans Denver Received : 09/27/2023 East Lincoln Fire Department Report Date : 10/09/2023 Sample ID : Lab No : Sampled:MW-402 96361 Matrix: 9/26/2023 12:30 Aqueous Analytical Method: Prep Method: Test Results Units MDL MQL By Analytical Batch Date / Time Analyzed DF 6200 PT 6200B Prep Batch(es):V38613 10/02/23 14:00 <0.220 µg/L 0.220 0.5001,2-Dichlorobenzene 1 10/03/23 09:10 V38614MSA <0.190 µg/L 0.190 0.5001,3-Dichlorobenzene 1 10/03/23 09:10 V38614MSA <0.210 µg/L 0.210 0.5001,4-Dichlorobenzene 1 10/03/23 09:10 V38614MSA <1.20 µg/L 1.20 5.00Dichlorodifluoromethane 1 10/03/23 09:10 V38614MSA <0.240 µg/L 0.240 0.5001,1-Dichloroethane 1 10/03/23 09:10 V38614MSA <0.150 µg/L 0.150 0.5001,2-Dichloroethane 1 10/03/23 09:10 V38614MSA <0.150 µg/L 0.150 0.5001,1-Dichloroethene 1 10/03/23 09:10 V38614MSA <0.200 µg/L 0.200 0.500cis-1,2-Dichloroethene 1 10/03/23 09:10 V38614MSA <0.180 µg/L 0.180 0.500trans-1,2-Dichloroethene 1 10/03/23 09:10 V38614MSA <0.190 µg/L 0.190 0.5001,2-Dichloropropane 1 10/03/23 09:10 V38614MSA <0.130 µg/L 0.130 0.5001,3-Dichloropropane 1 10/03/23 09:10 V38614MSA <0.210 µg/L 0.210 2.002,2-Dichloropropane 1 10/03/23 09:10 V38614MSA <0.200 µg/L 0.200 0.5001,1-Dichloropropene 1 10/03/23 09:10 V38614MSA <0.210 µg/L 0.210 0.500cis-1,3-Dichloropropene 1 10/03/23 09:10 V38614MSA <0.150 µg/L 0.150 0.500trans-1,3-Dichloropropene 1 10/03/23 09:10 V38614MSA <42.0 µg/L 42.0 200Ethanol 1 10/03/23 09:10 V38614MSA <0.170 µg/L 0.170 0.500Ethylbenzene 1 10/03/23 09:10 V38614MSA <0.350 µg/L 0.350 3.00Hexachlorobutadiene 1 10/03/23 09:10 V38614MSA <0.380 µg/L 0.380 1.002-Hexanone 1 10/03/23 09:10 V38614MSA <0.180 µg/L 0.180 0.500Isopropylbenzene 1 10/03/23 09:10 V38614MSA <0.089 µg/L 0.089 0.5004-Isopropyl toluene 1 10/03/23 09:10 V38614MSA <0.710 µg/L 0.710 5.00Methyl Ethyl Ketone (MEK)1 10/03/23 09:10 V38614MSA Qualifiers/ Definitions Estimated valueJDilution FactorDF Method Quantitation LimitMQL Page 30 of 82 , REPORT OF ANALYSISReport Number : Project Information : NC 28037 23-270-0005 00012 CES Group 274 N. Hwy 16, Ste 300 Greg Hans Denver Received : 09/27/2023 East Lincoln Fire Department Report Date : 10/09/2023 Sample ID : Lab No : Sampled:MW-402 96361 Matrix: 9/26/2023 12:30 Aqueous Analytical Method: Prep Method: Test Results Units MDL MQL By Analytical Batch Date / Time Analyzed DF 6200 PT 6200B Prep Batch(es):V38613 10/02/23 14:00 <0.140 µg/L 0.140 1.00Methyl tert-butyl ether (MTBE)1 10/03/23 09:10 V38614MSA <0.078 µg/L 0.078 1.004-Methyl-2-Pentanone 1 10/03/23 09:10 V38614MSA <0.330 µg/L 0.330 2.00Methylene Chloride 1 10/03/23 09:10 V38614MSA <0.470 µg/L 0.470 1.00Naphthalene 1 10/03/23 09:10 V38614MSA <0.190 µg/L 0.190 0.500n-Propylbenzene 1 10/03/23 09:10 V38614MSA <0.220 µg/L 0.220 0.500Styrene 1 10/03/23 09:10 V38614MSA <0.160 µg/L 0.160 0.5001,1,1,2-Tetrachloroethane 1 10/03/23 09:10 V38614MSA <0.160 µg/L 0.160 0.5001,1,2,2-Tetrachloroethane 1 10/03/23 09:10 V38614MSA <0.220 µg/L 0.220 0.500Tetrachloroethene 1 10/03/23 09:10 V38614MSA <0.220 µg/L 0.220 0.500Toluene 1 10/03/23 09:10 V38614MSA <0.380 µg/L 0.380 0.5001,2,3-Trichlorobenzene 1 10/03/23 09:10 V38614MSA <0.310 µg/L 0.310 0.5001,2,4-Trichlorobenzene 1 10/03/23 09:10 V38614MSA <0.160 µg/L 0.160 0.5001,1,1-Trichloroethane 1 10/03/23 09:10 V38614MSA <0.096 µg/L 0.096 0.5001,1,2-Trichloroethane 1 10/03/23 09:10 V38614MSA <0.180 µg/L 0.180 0.500Trichloroethene 1 10/03/23 09:10 V38614MSA <0.180 µg/L 0.180 0.500Trichlorofluoromethane 1 10/03/23 09:10 V38614MSA <0.270 µg/L 0.270 0.5001,2,3-Trichloropropane 1 10/03/23 09:10 V38614MSA <0.190 µg/L 0.190 0.5001,2,4-Trimethylbenzene 1 10/03/23 09:10 V38614MSA <0.180 µg/L 0.180 0.5001,3,5-Trimethylbenzene 1 10/03/23 09:10 V38614MSA <1.00 µg/L 1.00 5.00Vinyl Acetate 1 10/03/23 09:10 V38614MSA <0.170 µg/L 0.170 0.500Vinyl Chloride 1 10/03/23 09:10 V38614MSA <0.210 µg/L 0.210 0.500o-Xylene 1 10/03/23 09:10 V38614MSA Qualifiers/ Definitions Estimated valueJDilution FactorDF Method Quantitation LimitMQL Page 31 of 82 , REPORT OF ANALYSISReport Number : Project Information : NC 28037 23-270-0005 00012 CES Group 274 N. Hwy 16, Ste 300 Greg Hans Denver Received : 09/27/2023 East Lincoln Fire Department Report Date : 10/09/2023 Sample ID : Lab No : Sampled:MW-402 96361 Matrix: 9/26/2023 12:30 Aqueous Analytical Method: Prep Method: Test Results Units MDL MQL By Analytical Batch Date / Time Analyzed DF 6200 PT 6200B Prep Batch(es):V38613 10/02/23 14:00 <0.420 µg/L 0.420 1.00m,p-Xylene 1 10/03/23 09:10 V38614MSA <0.21 µg/L 0.210 0.500Xylene (Total)1 10/03/23 09:10 V38614 Surrogate: 4-Bromofluorobenzene 105 Limits: 70-130%10/03/23 09:101 MSA V38614 Surrogate: Dibromofluoromethane 96.4 Limits: 70-130%10/03/23 09:101 MSA V38614 Surrogate: 1,2-Dichloroethane - d4 91.4 Limits: 70-130%10/03/23 09:101 MSA V38614 Surrogate: Toluene-d8 99.4 Limits: 70-130%10/03/23 09:101 MSA V38614 Qualifiers/ Definitions Estimated valueJDilution FactorDF Method Quantitation LimitMQL Page 32 of 82 , REPORT OF ANALYSISReport Number : Project Information : NC 28037 23-270-0005 00012 CES Group 274 N. Hwy 16, Ste 300 Greg Hans Denver Received : 09/27/2023 East Lincoln Fire Department Report Date : 10/09/2023 Sample ID : Lab No : Sampled:MW-402 96361 Matrix: 9/26/2023 12:30 Aqueous Analytical Method: Prep Method: Test Results Units MDL MQL By Analytical Batch Date / Time Analyzed DF MAVPH (Prep) MADEP-VPH Prep Batch(es):V38469 09/27/23 08:00 <11.5 µg/L 11.5 50.0Aliphatic C5-C8 1 09/27/23 21:28 V38470TBL <25.8 µg/L 25.8 50.0Aliphatic C9-C12 1 09/27/23 21:28 V38470TBL <4.02 µg/L 4.02 50.0Aromatic C9-C10 1 09/27/23 21:28 V38470TBL MADEP-VPHSurrogate: 2,5-Dibromotoluene (FID)104 Limits: 70-130%09/27/23 21:281 TBL MADEP-VPHSurrogate: 2,5-Dibromotoluene (PID)98.8 Limits: 70-130%09/27/23 21:281 TBL Qualifiers/ Definitions Estimated valueJDilution FactorDF Method Quantitation LimitMQL Page 33 of 82 , REPORT OF ANALYSISReport Number : Project Information : NC 28037 23-270-0005 00012 CES Group 274 N. Hwy 16, Ste 300 Greg Hans Denver Received : 09/27/2023 East Lincoln Fire Department Report Date : 10/09/2023 Sample ID : Lab No : Sampled:MW-401 96362 Matrix: 9/26/2023 13:30 Aqueous Analytical Method: Prep Method: Test Results Units MDL MQL By Analytical Batch Date / Time Analyzed DF 6200 PT 6200B Prep Batch(es):V38613 10/02/23 14:00 V38659 10/03/23 14:00 3580 µg/L 180 1000Acetone 100 10/03/23 13:33 V38614MSA 8510 µg/L 18.0 50.0Benzene 100 10/03/23 13:33 V38614MSA <21.0 µg/L 21.0 50.0Bromobenzene 100 10/03/23 13:33 V38614MSA <42.0 µg/L 42.0 100Bromochloromethane 100 10/03/23 13:33 V38614MSA <16.0 µg/L 16.0 50.0Bromodichloromethane 100 10/03/23 13:33 V38614MSA <150 µg/L 150 500Bromoform 100 10/03/23 13:33 V38614MSA <28.0 µg/L 28.0 100Bromomethane 100 10/03/23 13:33 V38614MSA <18.0 µg/L 18.0 50.0n-Butylbenzene 100 10/03/23 13:33 V38614MSA <20.0 µg/L 20.0 50.0sec-Butyl benzene 100 10/03/23 13:33 V38614MSA <92.0 µg/L 92.0 200tert-Butyl benzene 100 10/03/23 13:33 V38614MSA <18.0 µg/L 18.0 50.0Carbon Tetrachloride 100 10/03/23 13:33 V38614MSA <19.0 µg/L 19.0 50.0Chlorobenzene 100 10/03/23 13:33 V38614MSA <19.0 µg/L 19.0 50.0Chlorodibromomethane 100 10/03/23 13:33 V38614MSA <43.0 µg/L 43.0 100Chloroethane 100 10/03/23 13:33 V38614MSA <22.0 µg/L 22.0 50.0Chloroform 100 10/03/23 13:33 V38614MSA <22.0 µg/L 22.0 50.0Chloromethane 100 10/03/23 13:33 V38614MSA <20.0 µg/L 20.0 50.02-Chlorotoluene 100 10/03/23 13:33 V38614MSA <20.0 µg/L 20.0 50.04-Chlorotoluene 100 10/03/23 13:33 V38614MSA <50.0 µg/L 50.0 50.0Di-Isopropyl Ether (DIPE)100 10/03/23 13:33 V38614MSA <110 µg/L 110 2001,2-Dibromo-3-Chloropropane 100 10/03/23 13:33 V38614MSA 93.1 µg/L 20.0 50.01,2-Dibromoethane 100 10/03/23 13:33 V38614MSA <23.0 µg/L 23.0 50.0Dibromomethane 100 10/03/23 13:33 V38614MSA Qualifiers/ Definitions Estimated valueJDilution FactorDF Method Quantitation LimitMQL Page 34 of 82 , REPORT OF ANALYSISReport Number : Project Information : NC 28037 23-270-0005 00012 CES Group 274 N. Hwy 16, Ste 300 Greg Hans Denver Received : 09/27/2023 East Lincoln Fire Department Report Date : 10/09/2023 Sample ID : Lab No : Sampled:MW-401 96362 Matrix: 9/26/2023 13:30 Aqueous Analytical Method: Prep Method: Test Results Units MDL MQL By Analytical Batch Date / Time Analyzed DF 6200 PT 6200B Prep Batch(es):V38613 10/02/23 14:00 V38659 10/03/23 14:00 <22.0 µg/L 22.0 50.01,2-Dichlorobenzene 100 10/03/23 13:33 V38614MSA <19.0 µg/L 19.0 50.01,3-Dichlorobenzene 100 10/03/23 13:33 V38614MSA <21.0 µg/L 21.0 50.01,4-Dichlorobenzene 100 10/03/23 13:33 V38614MSA <120 µg/L 120 500Dichlorodifluoromethane 100 10/03/23 13:33 V38614MSA <24.0 µg/L 24.0 50.01,1-Dichloroethane 100 10/03/23 13:33 V38614MSA <15.0 µg/L 15.0 50.01,2-Dichloroethane 100 10/03/23 13:33 V38614MSA <15.0 µg/L 15.0 50.01,1-Dichloroethene 100 10/03/23 13:33 V38614MSA <20.0 µg/L 20.0 50.0cis-1,2-Dichloroethene 100 10/03/23 13:33 V38614MSA <18.0 µg/L 18.0 50.0trans-1,2-Dichloroethene 100 10/03/23 13:33 V38614MSA <19.0 µg/L 19.0 50.01,2-Dichloropropane 100 10/03/23 13:33 V38614MSA <13.0 µg/L 13.0 50.01,3-Dichloropropane 100 10/03/23 13:33 V38614MSA <21.0 µg/L 21.0 2002,2-Dichloropropane 100 10/03/23 13:33 V38614MSA <20.0 µg/L 20.0 50.01,1-Dichloropropene 100 10/03/23 13:33 V38614MSA <21.0 µg/L 21.0 50.0cis-1,3-Dichloropropene 100 10/03/23 13:33 V38614MSA <15.0 µg/L 15.0 50.0trans-1,3-Dichloropropene 100 10/03/23 13:33 V38614MSA <4200 µg/L 4200 20000Ethanol 100 10/03/23 13:33 V38614MSA 3380 µg/L 17.0 50.0Ethylbenzene 100 10/03/23 13:33 V38614MSA <35.0 µg/L 35.0 300Hexachlorobutadiene 100 10/03/23 13:33 V38614MSA 1230 µg/L 38.0 1002-Hexanone 100 10/03/23 13:33 V38614MSA 110 µg/L 18.0 50.0Isopropylbenzene 100 10/03/23 13:33 V38614MSA <8.90 µg/L 8.90 50.04-Isopropyl toluene 100 10/03/23 13:33 V38614MSA 1780 µg/L 71.0 500Methyl Ethyl Ketone (MEK)100 10/03/23 13:33 V38614MSA Qualifiers/ Definitions Estimated valueJDilution FactorDF Method Quantitation LimitMQL Page 35 of 82 , REPORT OF ANALYSISReport Number : Project Information : NC 28037 23-270-0005 00012 CES Group 274 N. Hwy 16, Ste 300 Greg Hans Denver Received : 09/27/2023 East Lincoln Fire Department Report Date : 10/09/2023 Sample ID : Lab No : Sampled:MW-401 96362 Matrix: 9/26/2023 13:30 Aqueous Analytical Method: Prep Method: Test Results Units MDL MQL By Analytical Batch Date / Time Analyzed DF 6200 PT 6200B Prep Batch(es):V38613 10/02/23 14:00 V38659 10/03/23 14:00 <14.0 µg/L 14.0 100Methyl tert-butyl ether (MTBE)100 10/03/23 13:33 V38614MSA 475 µg/L 7.80 1004-Methyl-2-Pentanone 100 10/03/23 13:33 V38614MSA <33.0 µg/L 33.0 200Methylene Chloride 100 10/03/23 13:33 V38614MSA 1240 µg/L 47.0 100Naphthalene 100 10/03/23 13:33 V38614MSA 298 µg/L 19.0 50.0n-Propylbenzene 100 10/03/23 13:33 V38614MSA <22.0 µg/L 22.0 50.0Styrene 100 10/03/23 13:33 V38614MSA <16.0 µg/L 16.0 50.01,1,1,2-Tetrachloroethane 100 10/03/23 13:33 V38614MSA <16.0 µg/L 16.0 50.01,1,2,2-Tetrachloroethane 100 10/03/23 13:33 V38614MSA <22.0 µg/L 22.0 50.0Tetrachloroethene 100 10/03/23 13:33 V38614MSA 28200 µg/L 220 500Toluene 1000 10/04/23 00:42 V38660MSA <38.0 µg/L 38.0 50.01,2,3-Trichlorobenzene 100 10/03/23 13:33 V38614MSA <31.0 µg/L 31.0 50.01,2,4-Trichlorobenzene 100 10/03/23 13:33 V38614MSA <16.0 µg/L 16.0 50.01,1,1-Trichloroethane 100 10/03/23 13:33 V38614MSA <9.60 µg/L 9.60 50.01,1,2-Trichloroethane 100 10/03/23 13:33 V38614MSA <18.0 µg/L 18.0 50.0Trichloroethene 100 10/03/23 13:33 V38614MSA <18.0 µg/L 18.0 50.0Trichlorofluoromethane 100 10/03/23 13:33 V38614MSA <27.0 µg/L 27.0 50.01,2,3-Trichloropropane 100 10/03/23 13:33 V38614MSA 2630 µg/L 19.0 50.01,2,4-Trimethylbenzene 100 10/03/23 13:33 V38614MSA 660 µg/L 18.0 50.01,3,5-Trimethylbenzene 100 10/03/23 13:33 V38614MSA <100 µg/L 100 500Vinyl Acetate 100 10/03/23 13:33 V38614MSA <17.0 µg/L 17.0 50.0Vinyl Chloride 100 10/03/23 13:33 V38614MSA 5890 µg/L 21.0 50.0o-Xylene 100 10/03/23 13:33 V38614MSA Qualifiers/ Definitions Estimated valueJDilution FactorDF Method Quantitation LimitMQL Page 36 of 82 , REPORT OF ANALYSISReport Number : Project Information : NC 28037 23-270-0005 00012 CES Group 274 N. Hwy 16, Ste 300 Greg Hans Denver Received : 09/27/2023 East Lincoln Fire Department Report Date : 10/09/2023 Sample ID : Lab No : Sampled:MW-401 96362 Matrix: 9/26/2023 13:30 Aqueous Analytical Method: Prep Method: Test Results Units MDL MQL By Analytical Batch Date / Time Analyzed DF 6200 PT 6200B Prep Batch(es):V38613 10/02/23 14:00 V38659 10/03/23 14:00 12800 µg/L 42.0 100m,p-Xylene 100 10/03/23 13:33 V38614MSA 18700 µg/L 21.0 50.0Xylene (Total)100 10/03/23 13:33 V38614 Surrogate: 4-Bromofluorobenzene 104 Limits: 70-130%10/03/23 13:33100 MSA V38614 Surrogate: Dibromofluoromethane 93.6 Limits: 70-130%10/03/23 13:33100 MSA V38614 Surrogate: 1,2-Dichloroethane - d4 90.2 Limits: 70-130%10/03/23 13:33100 MSA V38614 Surrogate: Toluene-d8 99.4 Limits: 70-130%10/03/23 13:33100 MSA V38614 Surrogate: 4-Bromofluorobenzene 107 Limits: 70-130%10/04/23 00:421000 MSA V38660 Surrogate: Dibromofluoromethane 95.8 Limits: 70-130%10/04/23 00:421000 MSA V38660 Surrogate: 1,2-Dichloroethane - d4 88.2 Limits: 70-130%10/04/23 00:421000 MSA V38660 Surrogate: Toluene-d8 99.0 Limits: 70-130%10/04/23 00:421000 MSA V38660 Qualifiers/ Definitions Estimated valueJDilution FactorDF Method Quantitation LimitMQL Page 37 of 82 , REPORT OF ANALYSISReport Number : Project Information : NC 28037 23-270-0005 00012 CES Group 274 N. Hwy 16, Ste 300 Greg Hans Denver Received : 09/27/2023 East Lincoln Fire Department Report Date : 10/09/2023 Sample ID : Lab No : Sampled:MW-401 96362 Matrix: 9/26/2023 13:30 Aqueous Analytical Method: Prep Method: Test Results Units MDL MQL By Analytical Batch Date / Time Analyzed DF MAVPH (Prep) MADEP-VPH Prep Batch(es):V38482 09/28/23 08:00 57800 µg/L 1150 5000Aliphatic C5-C8 100 09/28/23 20:44 V38483TBL 40500 µg/L 2580 5000Aliphatic C9-C12 100 09/28/23 20:44 V38483TBL 5970 µg/L 402 5000Aromatic C9-C10 100 09/28/23 20:44 V38483TBL MADEP-VPHSurrogate: 2,5-Dibromotoluene (FID)82.3 Limits: 70-130%09/28/23 20:44100 TBL MADEP-VPHSurrogate: 2,5-Dibromotoluene (PID)80.8 Limits: 70-130%09/28/23 20:44100 TBL Qualifiers/ Definitions Estimated valueJDilution FactorDF Method Quantitation LimitMQL Page 38 of 82 , REPORT OF ANALYSISReport Number : Project Information : NC 28037 23-270-0005 00012 CES Group 274 N. Hwy 16, Ste 300 Greg Hans Denver Received : 09/27/2023 East Lincoln Fire Department Report Date : 10/09/2023 Sample ID : Lab No : Sampled:MW-202 96363 Matrix: 9/26/2023 13:00 Aqueous Analytical Method: Prep Method: Test Results Units MDL MQL By Analytical Batch Date / Time Analyzed DF 6200 PT 6200B Prep Batch(es):V38613 10/02/23 14:00 V38659 10/03/23 14:00 <180 µg/L 180 1000Acetone 100 10/03/23 14:00 V38614MSA 7460 µg/L 18.0 50.0Benzene 100 10/03/23 14:00 V38614MSA <21.0 µg/L 21.0 50.0Bromobenzene 100 10/03/23 14:00 V38614MSA <42.0 µg/L 42.0 100Bromochloromethane 100 10/03/23 14:00 V38614MSA <16.0 µg/L 16.0 50.0Bromodichloromethane 100 10/03/23 14:00 V38614MSA <150 µg/L 150 500Bromoform 100 10/03/23 14:00 V38614MSA <28.0 µg/L 28.0 100Bromomethane 100 10/03/23 14:00 V38614MSA 28.1 J µg/L 18.0 50.0n-Butylbenzene 100 10/03/23 14:00 V38614MSA <20.0 µg/L 20.0 50.0sec-Butyl benzene 100 10/03/23 14:00 V38614MSA <92.0 µg/L 92.0 200tert-Butyl benzene 100 10/03/23 14:00 V38614MSA <18.0 µg/L 18.0 50.0Carbon Tetrachloride 100 10/03/23 14:00 V38614MSA <19.0 µg/L 19.0 50.0Chlorobenzene 100 10/03/23 14:00 V38614MSA <19.0 µg/L 19.0 50.0Chlorodibromomethane 100 10/03/23 14:00 V38614MSA <43.0 µg/L 43.0 100Chloroethane 100 10/03/23 14:00 V38614MSA <22.0 µg/L 22.0 50.0Chloroform 100 10/03/23 14:00 V38614MSA <22.0 µg/L 22.0 50.0Chloromethane 100 10/03/23 14:00 V38614MSA <20.0 µg/L 20.0 50.02-Chlorotoluene 100 10/03/23 14:00 V38614MSA <20.0 µg/L 20.0 50.04-Chlorotoluene 100 10/03/23 14:00 V38614MSA <50.0 µg/L 50.0 50.0Di-Isopropyl Ether (DIPE)100 10/03/23 14:00 V38614MSA <110 µg/L 110 2001,2-Dibromo-3-Chloropropane 100 10/03/23 14:00 V38614MSA 27.7 J µg/L 20.0 50.01,2-Dibromoethane 100 10/03/23 14:00 V38614MSA <23.0 µg/L 23.0 50.0Dibromomethane 100 10/03/23 14:00 V38614MSA Qualifiers/ Definitions Estimated valueJDilution FactorDF Method Quantitation LimitMQL Page 39 of 82 , REPORT OF ANALYSISReport Number : Project Information : NC 28037 23-270-0005 00012 CES Group 274 N. Hwy 16, Ste 300 Greg Hans Denver Received : 09/27/2023 East Lincoln Fire Department Report Date : 10/09/2023 Sample ID : Lab No : Sampled:MW-202 96363 Matrix: 9/26/2023 13:00 Aqueous Analytical Method: Prep Method: Test Results Units MDL MQL By Analytical Batch Date / Time Analyzed DF 6200 PT 6200B Prep Batch(es):V38613 10/02/23 14:00 V38659 10/03/23 14:00 <22.0 µg/L 22.0 50.01,2-Dichlorobenzene 100 10/03/23 14:00 V38614MSA <19.0 µg/L 19.0 50.01,3-Dichlorobenzene 100 10/03/23 14:00 V38614MSA <21.0 µg/L 21.0 50.01,4-Dichlorobenzene 100 10/03/23 14:00 V38614MSA <120 µg/L 120 500Dichlorodifluoromethane 100 10/03/23 14:00 V38614MSA <24.0 µg/L 24.0 50.01,1-Dichloroethane 100 10/03/23 14:00 V38614MSA <15.0 µg/L 15.0 50.01,2-Dichloroethane 100 10/03/23 14:00 V38614MSA <15.0 µg/L 15.0 50.01,1-Dichloroethene 100 10/03/23 14:00 V38614MSA <20.0 µg/L 20.0 50.0cis-1,2-Dichloroethene 100 10/03/23 14:00 V38614MSA <18.0 µg/L 18.0 50.0trans-1,2-Dichloroethene 100 10/03/23 14:00 V38614MSA <19.0 µg/L 19.0 50.01,2-Dichloropropane 100 10/03/23 14:00 V38614MSA <13.0 µg/L 13.0 50.01,3-Dichloropropane 100 10/03/23 14:00 V38614MSA <21.0 µg/L 21.0 2002,2-Dichloropropane 100 10/03/23 14:00 V38614MSA <20.0 µg/L 20.0 50.01,1-Dichloropropene 100 10/03/23 14:00 V38614MSA <21.0 µg/L 21.0 50.0cis-1,3-Dichloropropene 100 10/03/23 14:00 V38614MSA <15.0 µg/L 15.0 50.0trans-1,3-Dichloropropene 100 10/03/23 14:00 V38614MSA <4200 µg/L 4200 20000Ethanol 100 10/03/23 14:00 V38614MSA 2990 µg/L 17.0 50.0Ethylbenzene 100 10/03/23 14:00 V38614MSA <35.0 µg/L 35.0 300Hexachlorobutadiene 100 10/03/23 14:00 V38614MSA 149 µg/L 38.0 1002-Hexanone 100 10/03/23 14:00 V38614MSA 92.9 µg/L 18.0 50.0Isopropylbenzene 100 10/03/23 14:00 V38614MSA <8.90 µg/L 8.90 50.04-Isopropyl toluene 100 10/03/23 14:00 V38614MSA <71.0 µg/L 71.0 500Methyl Ethyl Ketone (MEK)100 10/03/23 14:00 V38614MSA Qualifiers/ Definitions Estimated valueJDilution FactorDF Method Quantitation LimitMQL Page 40 of 82 , REPORT OF ANALYSISReport Number : Project Information : NC 28037 23-270-0005 00012 CES Group 274 N. Hwy 16, Ste 300 Greg Hans Denver Received : 09/27/2023 East Lincoln Fire Department Report Date : 10/09/2023 Sample ID : Lab No : Sampled:MW-202 96363 Matrix: 9/26/2023 13:00 Aqueous Analytical Method: Prep Method: Test Results Units MDL MQL By Analytical Batch Date / Time Analyzed DF 6200 PT 6200B Prep Batch(es):V38613 10/02/23 14:00 V38659 10/03/23 14:00 <14.0 µg/L 14.0 100Methyl tert-butyl ether (MTBE)100 10/03/23 14:00 V38614MSA <7.80 µg/L 7.80 1004-Methyl-2-Pentanone 100 10/03/23 14:00 V38614MSA <33.0 µg/L 33.0 200Methylene Chloride 100 10/03/23 14:00 V38614MSA 1260 µg/L 47.0 100Naphthalene 100 10/03/23 14:00 V38614MSA 286 µg/L 19.0 50.0n-Propylbenzene 100 10/03/23 14:00 V38614MSA 256 µg/L 22.0 50.0Styrene 100 10/03/23 14:00 V38614MSA <16.0 µg/L 16.0 50.01,1,1,2-Tetrachloroethane 100 10/03/23 14:00 V38614MSA <16.0 µg/L 16.0 50.01,1,2,2-Tetrachloroethane 100 10/03/23 14:00 V38614MSA <22.0 µg/L 22.0 50.0Tetrachloroethene 100 10/03/23 14:00 V38614MSA 33100 µg/L 220 500Toluene 1000 10/04/23 01:09 V38660MSA <38.0 µg/L 38.0 50.01,2,3-Trichlorobenzene 100 10/03/23 14:00 V38614MSA <31.0 µg/L 31.0 50.01,2,4-Trichlorobenzene 100 10/03/23 14:00 V38614MSA <16.0 µg/L 16.0 50.01,1,1-Trichloroethane 100 10/03/23 14:00 V38614MSA <9.60 µg/L 9.60 50.01,1,2-Trichloroethane 100 10/03/23 14:00 V38614MSA <18.0 µg/L 18.0 50.0Trichloroethene 100 10/03/23 14:00 V38614MSA <18.0 µg/L 18.0 50.0Trichlorofluoromethane 100 10/03/23 14:00 V38614MSA <27.0 µg/L 27.0 50.01,2,3-Trichloropropane 100 10/03/23 14:00 V38614MSA 2520 µg/L 19.0 50.01,2,4-Trimethylbenzene 100 10/03/23 14:00 V38614MSA 642 µg/L 18.0 50.01,3,5-Trimethylbenzene 100 10/03/23 14:00 V38614MSA <100 µg/L 100 500Vinyl Acetate 100 10/03/23 14:00 V38614MSA <17.0 µg/L 17.0 50.0Vinyl Chloride 100 10/03/23 14:00 V38614MSA 5230 µg/L 21.0 50.0o-Xylene 100 10/03/23 14:00 V38614MSA Qualifiers/ Definitions Estimated valueJDilution FactorDF Method Quantitation LimitMQL Page 41 of 82 , REPORT OF ANALYSISReport Number : Project Information : NC 28037 23-270-0005 00012 CES Group 274 N. Hwy 16, Ste 300 Greg Hans Denver Received : 09/27/2023 East Lincoln Fire Department Report Date : 10/09/2023 Sample ID : Lab No : Sampled:MW-202 96363 Matrix: 9/26/2023 13:00 Aqueous Analytical Method: Prep Method: Test Results Units MDL MQL By Analytical Batch Date / Time Analyzed DF 6200 PT 6200B Prep Batch(es):V38613 10/02/23 14:00 V38659 10/03/23 14:00 11400 µg/L 42.0 100m,p-Xylene 100 10/03/23 14:00 V38614MSA 16600 µg/L 21.0 50.0Xylene (Total)100 10/03/23 14:00 V38614 Surrogate: 4-Bromofluorobenzene 104 Limits: 70-130%10/03/23 14:00100 MSA V38614 Surrogate: Dibromofluoromethane 95.8 Limits: 70-130%10/03/23 14:00100 MSA V38614 Surrogate: 1,2-Dichloroethane - d4 92.6 Limits: 70-130%10/03/23 14:00100 MSA V38614 Surrogate: Toluene-d8 99.8 Limits: 70-130%10/03/23 14:00100 MSA V38614 Surrogate: 4-Bromofluorobenzene 105 Limits: 70-130%10/04/23 01:091000 MSA V38660 Surrogate: Dibromofluoromethane 96.4 Limits: 70-130%10/04/23 01:091000 MSA V38660 Surrogate: 1,2-Dichloroethane - d4 88.6 Limits: 70-130%10/04/23 01:091000 MSA V38660 Surrogate: Toluene-d8 101 Limits: 70-130%10/04/23 01:091000 MSA V38660 Qualifiers/ Definitions Estimated valueJDilution FactorDF Method Quantitation LimitMQL Page 42 of 82 , REPORT OF ANALYSISReport Number : Project Information : NC 28037 23-270-0005 00012 CES Group 274 N. Hwy 16, Ste 300 Greg Hans Denver Received : 09/27/2023 East Lincoln Fire Department Report Date : 10/09/2023 Sample ID : Lab No : Sampled:MW-202 96363 Matrix: 9/26/2023 13:00 Aqueous Analytical Method: Prep Method: Test Results Units MDL MQL By Analytical Batch Date / Time Analyzed DF MAVPH (Prep) MADEP-VPH Prep Batch(es):V38482 09/28/23 08:00 68400 µg/L 1150 5000Aliphatic C5-C8 100 09/28/23 21:08 V38483TBL 34800 µg/L 2580 5000Aliphatic C9-C12 100 09/28/23 21:08 V38483TBL 6170 µg/L 402 5000Aromatic C9-C10 100 09/28/23 21:08 V38483TBL MADEP-VPHSurrogate: 2,5-Dibromotoluene (FID)91.5 Limits: 70-130%09/28/23 21:08100 TBL MADEP-VPHSurrogate: 2,5-Dibromotoluene (PID)81.8 Limits: 70-130%09/28/23 21:08100 TBL Qualifiers/ Definitions Estimated valueJDilution FactorDF Method Quantitation LimitMQL Page 43 of 82 , REPORT OF ANALYSISReport Number : Project Information : NC 28037 23-270-0005 00012 CES Group 274 N. Hwy 16, Ste 300 Greg Hans Denver Received : 09/27/2023 East Lincoln Fire Department Report Date : 10/09/2023 Sample ID : Lab No : Sampled:MW-104 96364 Matrix: 9/26/2023 14:00 Aqueous Analytical Method: Prep Method: Test Results Units MDL MQL By Analytical Batch Date / Time Analyzed DF 6200 PT 6200B Prep Batch(es):V38694 10/04/23 09:00 V38780 10/05/23 09:00 <180 µg/L 180 1000Acetone 100 10/04/23 22:34 V38696MSA 24100 µg/L 180 500Benzene 1000 10/05/23 23:46 V38781MSA <21.0 µg/L 21.0 50.0Bromobenzene 100 10/04/23 22:34 V38696MSA <42.0 µg/L 42.0 100Bromochloromethane 100 10/04/23 22:34 V38696MSA <16.0 µg/L 16.0 50.0Bromodichloromethane 100 10/04/23 22:34 V38696MSA <150 µg/L 150 500Bromoform 100 10/04/23 22:34 V38696MSA <28.0 µg/L 28.0 100Bromomethane 100 10/04/23 22:34 V38696MSA <18.0 µg/L 18.0 50.0n-Butylbenzene 100 10/04/23 22:34 V38696MSA <20.0 µg/L 20.0 50.0sec-Butyl benzene 100 10/04/23 22:34 V38696MSA <92.0 µg/L 92.0 200tert-Butyl benzene 100 10/04/23 22:34 V38696MSA <18.0 µg/L 18.0 50.0Carbon Tetrachloride 100 10/04/23 22:34 V38696MSA <19.0 µg/L 19.0 50.0Chlorobenzene 100 10/04/23 22:34 V38696MSA <19.0 µg/L 19.0 50.0Chlorodibromomethane 100 10/04/23 22:34 V38696MSA <43.0 µg/L 43.0 100Chloroethane 100 10/04/23 22:34 V38696MSA <22.0 µg/L 22.0 50.0Chloroform 100 10/04/23 22:34 V38696MSA <22.0 µg/L 22.0 50.0Chloromethane 100 10/04/23 22:34 V38696MSA <20.0 µg/L 20.0 50.02-Chlorotoluene 100 10/04/23 22:34 V38696MSA <20.0 µg/L 20.0 50.04-Chlorotoluene 100 10/04/23 22:34 V38696MSA 326 µg/L 50.0 50.0Di-Isopropyl Ether (DIPE)100 10/04/23 22:34 V38696MSA <110 µg/L 110 2001,2-Dibromo-3-Chloropropane 100 10/04/23 22:34 V38696MSA 445 µg/L 20.0 50.01,2-Dibromoethane 100 10/04/23 22:34 V38696MSA <23.0 µg/L 23.0 50.0Dibromomethane 100 10/04/23 22:34 V38696MSA Qualifiers/ Definitions Estimated valueJDilution FactorDF Method Quantitation LimitMQL Page 44 of 82 , REPORT OF ANALYSISReport Number : Project Information : NC 28037 23-270-0005 00012 CES Group 274 N. Hwy 16, Ste 300 Greg Hans Denver Received : 09/27/2023 East Lincoln Fire Department Report Date : 10/09/2023 Sample ID : Lab No : Sampled:MW-104 96364 Matrix: 9/26/2023 14:00 Aqueous Analytical Method: Prep Method: Test Results Units MDL MQL By Analytical Batch Date / Time Analyzed DF 6200 PT 6200B Prep Batch(es):V38694 10/04/23 09:00 V38780 10/05/23 09:00 <22.0 µg/L 22.0 50.01,2-Dichlorobenzene 100 10/04/23 22:34 V38696MSA <19.0 µg/L 19.0 50.01,3-Dichlorobenzene 100 10/04/23 22:34 V38696MSA <21.0 µg/L 21.0 50.01,4-Dichlorobenzene 100 10/04/23 22:34 V38696MSA <120 µg/L 120 500Dichlorodifluoromethane 100 10/04/23 22:34 V38696MSA <24.0 µg/L 24.0 50.01,1-Dichloroethane 100 10/04/23 22:34 V38696MSA 207 µg/L 15.0 50.01,2-Dichloroethane 100 10/04/23 22:34 V38696MSA <15.0 µg/L 15.0 50.01,1-Dichloroethene 100 10/04/23 22:34 V38696MSA <20.0 µg/L 20.0 50.0cis-1,2-Dichloroethene 100 10/04/23 22:34 V38696MSA <18.0 µg/L 18.0 50.0trans-1,2-Dichloroethene 100 10/04/23 22:34 V38696MSA <19.0 µg/L 19.0 50.01,2-Dichloropropane 100 10/04/23 22:34 V38696MSA <13.0 µg/L 13.0 50.01,3-Dichloropropane 100 10/04/23 22:34 V38696MSA <21.0 µg/L 21.0 2002,2-Dichloropropane 100 10/04/23 22:34 V38696MSA <20.0 µg/L 20.0 50.01,1-Dichloropropene 100 10/04/23 22:34 V38696MSA <21.0 µg/L 21.0 50.0cis-1,3-Dichloropropene 100 10/04/23 22:34 V38696MSA <15.0 µg/L 15.0 50.0trans-1,3-Dichloropropene 100 10/04/23 22:34 V38696MSA <4200 µg/L 4200 20000Ethanol 100 10/04/23 22:34 V38696MSA 2300 µg/L 17.0 50.0Ethylbenzene 100 10/04/23 22:34 V38696MSA <35.0 µg/L 35.0 300Hexachlorobutadiene 100 10/04/23 22:34 V38696MSA 1110 µg/L 38.0 1002-Hexanone 100 10/04/23 22:34 V38696MSA 64.9 µg/L 18.0 50.0Isopropylbenzene 100 10/04/23 22:34 V38696MSA <8.90 µg/L 8.90 50.04-Isopropyl toluene 100 10/04/23 22:34 V38696MSA 2790 µg/L 71.0 500Methyl Ethyl Ketone (MEK)100 10/04/23 22:34 V38696MSA Qualifiers/ Definitions Estimated valueJDilution FactorDF Method Quantitation LimitMQL Page 45 of 82 , REPORT OF ANALYSISReport Number : Project Information : NC 28037 23-270-0005 00012 CES Group 274 N. Hwy 16, Ste 300 Greg Hans Denver Received : 09/27/2023 East Lincoln Fire Department Report Date : 10/09/2023 Sample ID : Lab No : Sampled:MW-104 96364 Matrix: 9/26/2023 14:00 Aqueous Analytical Method: Prep Method: Test Results Units MDL MQL By Analytical Batch Date / Time Analyzed DF 6200 PT 6200B Prep Batch(es):V38694 10/04/23 09:00 V38780 10/05/23 09:00 <14.0 µg/L 14.0 100Methyl tert-butyl ether (MTBE)100 10/04/23 22:34 V38696MSA 549 µg/L 7.80 1004-Methyl-2-Pentanone 100 10/04/23 22:34 V38696MSA <33.0 µg/L 33.0 200Methylene Chloride 100 10/04/23 22:34 V38696MSA 1150 µg/L 47.0 100Naphthalene 100 10/04/23 22:34 V38696MSA 178 µg/L 19.0 50.0n-Propylbenzene 100 10/04/23 22:34 V38696MSA 140 µg/L 22.0 50.0Styrene 100 10/04/23 22:34 V38696MSA <16.0 µg/L 16.0 50.01,1,1,2-Tetrachloroethane 100 10/04/23 22:34 V38696MSA <16.0 µg/L 16.0 50.01,1,2,2-Tetrachloroethane 100 10/04/23 22:34 V38696MSA <22.0 µg/L 22.0 50.0Tetrachloroethene 100 10/04/23 22:34 V38696MSA 39400 µg/L 220 500Toluene 1000 10/05/23 23:46 V38781MSA <38.0 µg/L 38.0 50.01,2,3-Trichlorobenzene 100 10/04/23 22:34 V38696MSA <31.0 µg/L 31.0 50.01,2,4-Trichlorobenzene 100 10/04/23 22:34 V38696MSA <16.0 µg/L 16.0 50.01,1,1-Trichloroethane 100 10/04/23 22:34 V38696MSA <9.60 µg/L 9.60 50.01,1,2-Trichloroethane 100 10/04/23 22:34 V38696MSA <18.0 µg/L 18.0 50.0Trichloroethene 100 10/04/23 22:34 V38696MSA <18.0 µg/L 18.0 50.0Trichlorofluoromethane 100 10/04/23 22:34 V38696MSA <27.0 µg/L 27.0 50.01,2,3-Trichloropropane 100 10/04/23 22:34 V38696MSA 1980 µg/L 19.0 50.01,2,4-Trimethylbenzene 100 10/04/23 22:34 V38696MSA 486 µg/L 18.0 50.01,3,5-Trimethylbenzene 100 10/04/23 22:34 V38696MSA <100 µg/L 100 500Vinyl Acetate 100 10/04/23 22:34 V38696MSA <17.0 µg/L 17.0 50.0Vinyl Chloride 100 10/04/23 22:34 V38696MSA 4780 µg/L 21.0 50.0o-Xylene 100 10/04/23 22:34 V38696MSA Qualifiers/ Definitions Estimated valueJDilution FactorDF Method Quantitation LimitMQL Page 46 of 82 , REPORT OF ANALYSISReport Number : Project Information : NC 28037 23-270-0005 00012 CES Group 274 N. Hwy 16, Ste 300 Greg Hans Denver Received : 09/27/2023 East Lincoln Fire Department Report Date : 10/09/2023 Sample ID : Lab No : Sampled:MW-104 96364 Matrix: 9/26/2023 14:00 Aqueous Analytical Method: Prep Method: Test Results Units MDL MQL By Analytical Batch Date / Time Analyzed DF 6200 PT 6200B Prep Batch(es):V38694 10/04/23 09:00 V38780 10/05/23 09:00 10100 µg/L 42.0 100m,p-Xylene 100 10/04/23 22:34 V38696MSA 14900 µg/L 21.0 50.0Xylene (Total)100 10/04/23 22:34 V38696 Surrogate: 4-Bromofluorobenzene 103 Limits: 70-130%10/04/23 22:34100 MSA V38696 Surrogate: Dibromofluoromethane 92.6 Limits: 70-130%10/04/23 22:34100 MSA V38696 Surrogate: 1,2-Dichloroethane - d4 89.6 Limits: 70-130%10/04/23 22:34100 MSA V38696 Surrogate: Toluene-d8 99.6 Limits: 70-130%10/04/23 22:34100 MSA V38696 Surrogate: 4-Bromofluorobenzene 105 Limits: 70-130%10/05/23 23:461000 MSA V38781 Surrogate: Dibromofluoromethane 94.6 Limits: 70-130%10/05/23 23:461000 MSA V38781 Surrogate: 1,2-Dichloroethane - d4 86.6 Limits: 70-130%10/05/23 23:461000 MSA V38781 Surrogate: Toluene-d8 99.0 Limits: 70-130%10/05/23 23:461000 MSA V38781 Qualifiers/ Definitions Estimated valueJDilution FactorDF Method Quantitation LimitMQL Page 47 of 82 , REPORT OF ANALYSISReport Number : Project Information : NC 28037 23-270-0005 00012 CES Group 274 N. Hwy 16, Ste 300 Greg Hans Denver Received : 09/27/2023 East Lincoln Fire Department Report Date : 10/09/2023 Sample ID : Lab No : Sampled:MW-104 96364 Matrix: 9/26/2023 14:00 Aqueous Analytical Method: Prep Method: Test Results Units MDL MQL By Analytical Batch Date / Time Analyzed DF MAVPH (Prep) MADEP-VPH Prep Batch(es):V38482 09/28/23 08:00 99600 µg/L 1150 5000Aliphatic C5-C8 100 09/28/23 21:32 V38483TBL 32600 µg/L 2580 5000Aliphatic C9-C12 100 09/28/23 21:32 V38483TBL 5310 µg/L 402 5000Aromatic C9-C10 100 09/28/23 21:32 V38483TBL MADEP-VPHSurrogate: 2,5-Dibromotoluene (FID)88.5 Limits: 70-130%09/28/23 21:32100 TBL MADEP-VPHSurrogate: 2,5-Dibromotoluene (PID)81.9 Limits: 70-130%09/28/23 21:32100 TBL Qualifiers/ Definitions Estimated valueJDilution FactorDF Method Quantitation LimitMQL Page 48 of 82 , REPORT OF ANALYSISReport Number : Project Information : NC 28037 23-270-0005 00012 CES Group 274 N. Hwy 16, Ste 300 Greg Hans Denver Received : 09/27/2023 East Lincoln Fire Department Report Date : 10/09/2023 Sample ID : Lab No : Sampled:MW-101 96365 Matrix: 9/26/2023 14:30 Aqueous Analytical Method: Prep Method: Test Results Units MDL MQL By Analytical Batch Date / Time Analyzed DF 6200 PT 6200B Prep Batch(es):V38694 10/04/23 09:00 V38780 10/05/23 09:00 <180 µg/L 180 1000Acetone 100 10/04/23 23:00 V38696MSA 24000 µg/L 180 500Benzene 1000 10/06/23 00:13 V38781MSA <21.0 µg/L 21.0 50.0Bromobenzene 100 10/04/23 23:00 V38696MSA <42.0 µg/L 42.0 100Bromochloromethane 100 10/04/23 23:00 V38696MSA <16.0 µg/L 16.0 50.0Bromodichloromethane 100 10/04/23 23:00 V38696MSA <150 µg/L 150 500Bromoform 100 10/04/23 23:00 V38696MSA <28.0 µg/L 28.0 100Bromomethane 100 10/04/23 23:00 V38696MSA 26.9 J µg/L 18.0 50.0n-Butylbenzene 100 10/04/23 23:00 V38696MSA <20.0 µg/L 20.0 50.0sec-Butyl benzene 100 10/04/23 23:00 V38696MSA <92.0 µg/L 92.0 200tert-Butyl benzene 100 10/04/23 23:00 V38696MSA <18.0 µg/L 18.0 50.0Carbon Tetrachloride 100 10/04/23 23:00 V38696MSA <19.0 µg/L 19.0 50.0Chlorobenzene 100 10/04/23 23:00 V38696MSA <19.0 µg/L 19.0 50.0Chlorodibromomethane 100 10/04/23 23:00 V38696MSA <43.0 µg/L 43.0 100Chloroethane 100 10/04/23 23:00 V38696MSA <22.0 µg/L 22.0 50.0Chloroform 100 10/04/23 23:00 V38696MSA <22.0 µg/L 22.0 50.0Chloromethane 100 10/04/23 23:00 V38696MSA <20.0 µg/L 20.0 50.02-Chlorotoluene 100 10/04/23 23:00 V38696MSA <20.0 µg/L 20.0 50.04-Chlorotoluene 100 10/04/23 23:00 V38696MSA 4000 µg/L 50.0 50.0Di-Isopropyl Ether (DIPE)100 10/04/23 23:00 V38696MSA <110 µg/L 110 2001,2-Dibromo-3-Chloropropane 100 10/04/23 23:00 V38696MSA 818 µg/L 20.0 50.01,2-Dibromoethane 100 10/04/23 23:00 V38696MSA <23.0 µg/L 23.0 50.0Dibromomethane 100 10/04/23 23:00 V38696MSA Qualifiers/ Definitions Estimated valueJDilution FactorDF Method Quantitation LimitMQL Page 49 of 82 , REPORT OF ANALYSISReport Number : Project Information : NC 28037 23-270-0005 00012 CES Group 274 N. Hwy 16, Ste 300 Greg Hans Denver Received : 09/27/2023 East Lincoln Fire Department Report Date : 10/09/2023 Sample ID : Lab No : Sampled:MW-101 96365 Matrix: 9/26/2023 14:30 Aqueous Analytical Method: Prep Method: Test Results Units MDL MQL By Analytical Batch Date / Time Analyzed DF 6200 PT 6200B Prep Batch(es):V38694 10/04/23 09:00 V38780 10/05/23 09:00 <22.0 µg/L 22.0 50.01,2-Dichlorobenzene 100 10/04/23 23:00 V38696MSA <19.0 µg/L 19.0 50.01,3-Dichlorobenzene 100 10/04/23 23:00 V38696MSA <21.0 µg/L 21.0 50.01,4-Dichlorobenzene 100 10/04/23 23:00 V38696MSA <120 µg/L 120 500Dichlorodifluoromethane 100 10/04/23 23:00 V38696MSA <24.0 µg/L 24.0 50.01,1-Dichloroethane 100 10/04/23 23:00 V38696MSA 1690 µg/L 15.0 50.01,2-Dichloroethane 100 10/04/23 23:00 V38696MSA <15.0 µg/L 15.0 50.01,1-Dichloroethene 100 10/04/23 23:00 V38696MSA <20.0 µg/L 20.0 50.0cis-1,2-Dichloroethene 100 10/04/23 23:00 V38696MSA <18.0 µg/L 18.0 50.0trans-1,2-Dichloroethene 100 10/04/23 23:00 V38696MSA <19.0 µg/L 19.0 50.01,2-Dichloropropane 100 10/04/23 23:00 V38696MSA <13.0 µg/L 13.0 50.01,3-Dichloropropane 100 10/04/23 23:00 V38696MSA <21.0 µg/L 21.0 2002,2-Dichloropropane 100 10/04/23 23:00 V38696MSA <20.0 µg/L 20.0 50.01,1-Dichloropropene 100 10/04/23 23:00 V38696MSA <21.0 µg/L 21.0 50.0cis-1,3-Dichloropropene 100 10/04/23 23:00 V38696MSA <15.0 µg/L 15.0 50.0trans-1,3-Dichloropropene 100 10/04/23 23:00 V38696MSA <4200 µg/L 4200 20000Ethanol 100 10/04/23 23:00 V38696MSA 2770 µg/L 17.0 50.0Ethylbenzene 100 10/04/23 23:00 V38696MSA <35.0 µg/L 35.0 300Hexachlorobutadiene 100 10/04/23 23:00 V38696MSA 930 µg/L 38.0 1002-Hexanone 100 10/04/23 23:00 V38696MSA 79.9 µg/L 18.0 50.0Isopropylbenzene 100 10/04/23 23:00 V38696MSA <8.90 µg/L 8.90 50.04-Isopropyl toluene 100 10/04/23 23:00 V38696MSA 1140 µg/L 71.0 500Methyl Ethyl Ketone (MEK)100 10/04/23 23:00 V38696MSA Qualifiers/ Definitions Estimated valueJDilution FactorDF Method Quantitation LimitMQL Page 50 of 82 , REPORT OF ANALYSISReport Number : Project Information : NC 28037 23-270-0005 00012 CES Group 274 N. Hwy 16, Ste 300 Greg Hans Denver Received : 09/27/2023 East Lincoln Fire Department Report Date : 10/09/2023 Sample ID : Lab No : Sampled:MW-101 96365 Matrix: 9/26/2023 14:30 Aqueous Analytical Method: Prep Method: Test Results Units MDL MQL By Analytical Batch Date / Time Analyzed DF 6200 PT 6200B Prep Batch(es):V38694 10/04/23 09:00 V38780 10/05/23 09:00 938 µg/L 14.0 100Methyl tert-butyl ether (MTBE)100 10/04/23 23:00 V38696MSA 455 µg/L 7.80 1004-Methyl-2-Pentanone 100 10/04/23 23:00 V38696MSA <33.0 µg/L 33.0 200Methylene Chloride 100 10/04/23 23:00 V38696MSA 1240 µg/L 47.0 100Naphthalene 100 10/04/23 23:00 V38696MSA 249 µg/L 19.0 50.0n-Propylbenzene 100 10/04/23 23:00 V38696MSA 29.0 J µg/L 22.0 50.0Styrene 100 10/04/23 23:00 V38696MSA <16.0 µg/L 16.0 50.01,1,1,2-Tetrachloroethane 100 10/04/23 23:00 V38696MSA <16.0 µg/L 16.0 50.01,1,2,2-Tetrachloroethane 100 10/04/23 23:00 V38696MSA <22.0 µg/L 22.0 50.0Tetrachloroethene 100 10/04/23 23:00 V38696MSA 34900 µg/L 220 500Toluene 1000 10/06/23 00:13 V38781MSA <38.0 µg/L 38.0 50.01,2,3-Trichlorobenzene 100 10/04/23 23:00 V38696MSA <31.0 µg/L 31.0 50.01,2,4-Trichlorobenzene 100 10/04/23 23:00 V38696MSA <16.0 µg/L 16.0 50.01,1,1-Trichloroethane 100 10/04/23 23:00 V38696MSA <9.60 µg/L 9.60 50.01,1,2-Trichloroethane 100 10/04/23 23:00 V38696MSA <18.0 µg/L 18.0 50.0Trichloroethene 100 10/04/23 23:00 V38696MSA <18.0 µg/L 18.0 50.0Trichlorofluoromethane 100 10/04/23 23:00 V38696MSA <27.0 µg/L 27.0 50.01,2,3-Trichloropropane 100 10/04/23 23:00 V38696MSA 2360 µg/L 19.0 50.01,2,4-Trimethylbenzene 100 10/04/23 23:00 V38696MSA 577 µg/L 18.0 50.01,3,5-Trimethylbenzene 100 10/04/23 23:00 V38696MSA <100 µg/L 100 500Vinyl Acetate 100 10/04/23 23:00 V38696MSA <17.0 µg/L 17.0 50.0Vinyl Chloride 100 10/04/23 23:00 V38696MSA 5510 µg/L 21.0 50.0o-Xylene 100 10/04/23 23:00 V38696MSA Qualifiers/ Definitions Estimated valueJDilution FactorDF Method Quantitation LimitMQL Page 51 of 82 , REPORT OF ANALYSISReport Number : Project Information : NC 28037 23-270-0005 00012 CES Group 274 N. Hwy 16, Ste 300 Greg Hans Denver Received : 09/27/2023 East Lincoln Fire Department Report Date : 10/09/2023 Sample ID : Lab No : Sampled:MW-101 96365 Matrix: 9/26/2023 14:30 Aqueous Analytical Method: Prep Method: Test Results Units MDL MQL By Analytical Batch Date / Time Analyzed DF 6200 PT 6200B Prep Batch(es):V38694 10/04/23 09:00 V38780 10/05/23 09:00 11700 µg/L 42.0 100m,p-Xylene 100 10/04/23 23:00 V38696MSA 17200 µg/L 21.0 50.0Xylene (Total)100 10/04/23 23:00 V38696 Surrogate: 4-Bromofluorobenzene 103 Limits: 70-130%10/04/23 23:00100 MSA V38696 Surrogate: Dibromofluoromethane 92.6 Limits: 70-130%10/04/23 23:00100 MSA V38696 Surrogate: 1,2-Dichloroethane - d4 89.0 Limits: 70-130%10/04/23 23:00100 MSA V38696 Surrogate: Toluene-d8 98.6 Limits: 70-130%10/04/23 23:00100 MSA V38696 Surrogate: 4-Bromofluorobenzene 104 Limits: 70-130%10/06/23 00:131000 MSA V38781 Surrogate: Dibromofluoromethane 94.2 Limits: 70-130%10/06/23 00:131000 MSA V38781 Surrogate: 1,2-Dichloroethane - d4 87.2 Limits: 70-130%10/06/23 00:131000 MSA V38781 Surrogate: Toluene-d8 99.8 Limits: 70-130%10/06/23 00:131000 MSA V38781 Qualifiers/ Definitions Estimated valueJDilution FactorDF Method Quantitation LimitMQL Page 52 of 82 , REPORT OF ANALYSISReport Number : Project Information : NC 28037 23-270-0005 00012 CES Group 274 N. Hwy 16, Ste 300 Greg Hans Denver Received : 09/27/2023 East Lincoln Fire Department Report Date : 10/09/2023 Sample ID : Lab No : Sampled:MW-101 96365 Matrix: 9/26/2023 14:30 Aqueous Analytical Method: Prep Method: Test Results Units MDL MQL By Analytical Batch Date / Time Analyzed DF MAVPH (Prep) MADEP-VPH Prep Batch(es):V38482 09/28/23 08:00 82500 µg/L 1150 5000Aliphatic C5-C8 100 09/28/23 21:56 V38483TBL 33800 µg/L 2580 5000Aliphatic C9-C12 100 09/28/23 21:56 V38483TBL 5720 µg/L 402 5000Aromatic C9-C10 100 09/28/23 21:56 V38483TBL MADEP-VPHSurrogate: 2,5-Dibromotoluene (FID)82.3 Limits: 70-130%09/28/23 21:56100 TBL MADEP-VPHSurrogate: 2,5-Dibromotoluene (PID)80.0 Limits: 70-130%09/28/23 21:56100 TBL Qualifiers/ Definitions Estimated valueJDilution FactorDF Method Quantitation LimitMQL Page 53 of 82 , REPORT OF ANALYSISReport Number : Project Information : NC 28037 23-270-0005 00012 CES Group 274 N. Hwy 16, Ste 300 Greg Hans Denver Received : 09/27/2023 East Lincoln Fire Department Report Date : 10/09/2023 Sample ID : Lab No : Sampled:MW-103 96366 Matrix: 9/26/2023 10:00 Aqueous Analytical Method: Prep Method: Test Results Units MDL MQL By Analytical Batch Date / Time Analyzed DF 6200 PT 6200B Prep Batch(es):V38694 10/04/23 09:00 <180 µg/L 180 1000Acetone 100 10/04/23 23:26 V38696MSA 3120 µg/L 18.0 50.0Benzene 100 10/04/23 23:26 V38696MSA <21.0 µg/L 21.0 50.0Bromobenzene 100 10/04/23 23:26 V38696MSA <42.0 µg/L 42.0 100Bromochloromethane 100 10/04/23 23:26 V38696MSA <16.0 µg/L 16.0 50.0Bromodichloromethane 100 10/04/23 23:26 V38696MSA <150 µg/L 150 500Bromoform 100 10/04/23 23:26 V38696MSA <28.0 µg/L 28.0 100Bromomethane 100 10/04/23 23:26 V38696MSA 34.0 J µg/L 18.0 50.0n-Butylbenzene 100 10/04/23 23:26 V38696MSA <20.0 µg/L 20.0 50.0sec-Butyl benzene 100 10/04/23 23:26 V38696MSA <92.0 µg/L 92.0 200tert-Butyl benzene 100 10/04/23 23:26 V38696MSA <18.0 µg/L 18.0 50.0Carbon Tetrachloride 100 10/04/23 23:26 V38696MSA <19.0 µg/L 19.0 50.0Chlorobenzene 100 10/04/23 23:26 V38696MSA <19.0 µg/L 19.0 50.0Chlorodibromomethane 100 10/04/23 23:26 V38696MSA <43.0 µg/L 43.0 100Chloroethane 100 10/04/23 23:26 V38696MSA <22.0 µg/L 22.0 50.0Chloroform 100 10/04/23 23:26 V38696MSA <22.0 µg/L 22.0 50.0Chloromethane 100 10/04/23 23:26 V38696MSA <20.0 µg/L 20.0 50.02-Chlorotoluene 100 10/04/23 23:26 V38696MSA <20.0 µg/L 20.0 50.04-Chlorotoluene 100 10/04/23 23:26 V38696MSA 65.6 µg/L 50.0 50.0Di-Isopropyl Ether (DIPE)100 10/04/23 23:26 V38696MSA <110 µg/L 110 2001,2-Dibromo-3-Chloropropane 100 10/04/23 23:26 V38696MSA <20.0 µg/L 20.0 50.01,2-Dibromoethane 100 10/04/23 23:26 V38696MSA <23.0 µg/L 23.0 50.0Dibromomethane 100 10/04/23 23:26 V38696MSA Qualifiers/ Definitions Estimated valueJDilution FactorDF Method Quantitation LimitMQL Page 54 of 82 , REPORT OF ANALYSISReport Number : Project Information : NC 28037 23-270-0005 00012 CES Group 274 N. Hwy 16, Ste 300 Greg Hans Denver Received : 09/27/2023 East Lincoln Fire Department Report Date : 10/09/2023 Sample ID : Lab No : Sampled:MW-103 96366 Matrix: 9/26/2023 10:00 Aqueous Analytical Method: Prep Method: Test Results Units MDL MQL By Analytical Batch Date / Time Analyzed DF 6200 PT 6200B Prep Batch(es):V38694 10/04/23 09:00 <22.0 µg/L 22.0 50.01,2-Dichlorobenzene 100 10/04/23 23:26 V38696MSA <19.0 µg/L 19.0 50.01,3-Dichlorobenzene 100 10/04/23 23:26 V38696MSA <21.0 µg/L 21.0 50.01,4-Dichlorobenzene 100 10/04/23 23:26 V38696MSA <120 µg/L 120 500Dichlorodifluoromethane 100 10/04/23 23:26 V38696MSA <24.0 µg/L 24.0 50.01,1-Dichloroethane 100 10/04/23 23:26 V38696MSA <15.0 µg/L 15.0 50.01,2-Dichloroethane 100 10/04/23 23:26 V38696MSA <15.0 µg/L 15.0 50.01,1-Dichloroethene 100 10/04/23 23:26 V38696MSA <20.0 µg/L 20.0 50.0cis-1,2-Dichloroethene 100 10/04/23 23:26 V38696MSA <18.0 µg/L 18.0 50.0trans-1,2-Dichloroethene 100 10/04/23 23:26 V38696MSA <19.0 µg/L 19.0 50.01,2-Dichloropropane 100 10/04/23 23:26 V38696MSA <13.0 µg/L 13.0 50.01,3-Dichloropropane 100 10/04/23 23:26 V38696MSA <21.0 µg/L 21.0 2002,2-Dichloropropane 100 10/04/23 23:26 V38696MSA <20.0 µg/L 20.0 50.01,1-Dichloropropene 100 10/04/23 23:26 V38696MSA <21.0 µg/L 21.0 50.0cis-1,3-Dichloropropene 100 10/04/23 23:26 V38696MSA <15.0 µg/L 15.0 50.0trans-1,3-Dichloropropene 100 10/04/23 23:26 V38696MSA <4200 µg/L 4200 20000Ethanol 100 10/04/23 23:26 V38696MSA 520 µg/L 17.0 50.0Ethylbenzene 100 10/04/23 23:26 V38696MSA <35.0 µg/L 35.0 300Hexachlorobutadiene 100 10/04/23 23:26 V38696MSA <38.0 µg/L 38.0 1002-Hexanone 100 10/04/23 23:26 V38696MSA 45.4 J µg/L 18.0 50.0Isopropylbenzene 100 10/04/23 23:26 V38696MSA <8.90 µg/L 8.90 50.04-Isopropyl toluene 100 10/04/23 23:26 V38696MSA <71.0 µg/L 71.0 500Methyl Ethyl Ketone (MEK)100 10/04/23 23:26 V38696MSA Qualifiers/ Definitions Estimated valueJDilution FactorDF Method Quantitation LimitMQL Page 55 of 82 , REPORT OF ANALYSISReport Number : Project Information : NC 28037 23-270-0005 00012 CES Group 274 N. Hwy 16, Ste 300 Greg Hans Denver Received : 09/27/2023 East Lincoln Fire Department Report Date : 10/09/2023 Sample ID : Lab No : Sampled:MW-103 96366 Matrix: 9/26/2023 10:00 Aqueous Analytical Method: Prep Method: Test Results Units MDL MQL By Analytical Batch Date / Time Analyzed DF 6200 PT 6200B Prep Batch(es):V38694 10/04/23 09:00 <14.0 µg/L 14.0 100Methyl tert-butyl ether (MTBE)100 10/04/23 23:26 V38696MSA 123 µg/L 7.80 1004-Methyl-2-Pentanone 100 10/04/23 23:26 V38696MSA <33.0 µg/L 33.0 200Methylene Chloride 100 10/04/23 23:26 V38696MSA <47.0 µg/L 47.0 100Naphthalene 100 10/04/23 23:26 V38696MSA 169 µg/L 19.0 50.0n-Propylbenzene 100 10/04/23 23:26 V38696MSA <22.0 µg/L 22.0 50.0Styrene 100 10/04/23 23:26 V38696MSA <16.0 µg/L 16.0 50.01,1,1,2-Tetrachloroethane 100 10/04/23 23:26 V38696MSA <16.0 µg/L 16.0 50.01,1,2,2-Tetrachloroethane 100 10/04/23 23:26 V38696MSA <22.0 µg/L 22.0 50.0Tetrachloroethene 100 10/04/23 23:26 V38696MSA 1320 µg/L 22.0 50.0Toluene 100 10/04/23 23:26 V38696MSA <38.0 µg/L 38.0 50.01,2,3-Trichlorobenzene 100 10/04/23 23:26 V38696MSA <31.0 µg/L 31.0 50.01,2,4-Trichlorobenzene 100 10/04/23 23:26 V38696MSA <16.0 µg/L 16.0 50.01,1,1-Trichloroethane 100 10/04/23 23:26 V38696MSA <9.60 µg/L 9.60 50.01,1,2-Trichloroethane 100 10/04/23 23:26 V38696MSA <18.0 µg/L 18.0 50.0Trichloroethene 100 10/04/23 23:26 V38696MSA <18.0 µg/L 18.0 50.0Trichlorofluoromethane 100 10/04/23 23:26 V38696MSA <27.0 µg/L 27.0 50.01,2,3-Trichloropropane 100 10/04/23 23:26 V38696MSA 444 µg/L 19.0 50.01,2,4-Trimethylbenzene 100 10/04/23 23:26 V38696MSA 78.2 µg/L 18.0 50.01,3,5-Trimethylbenzene 100 10/04/23 23:26 V38696MSA <100 µg/L 100 500Vinyl Acetate 100 10/04/23 23:26 V38696MSA <17.0 µg/L 17.0 50.0Vinyl Chloride 100 10/04/23 23:26 V38696MSA 492 µg/L 21.0 50.0o-Xylene 100 10/04/23 23:26 V38696MSA Qualifiers/ Definitions Estimated valueJDilution FactorDF Method Quantitation LimitMQL Page 56 of 82 , REPORT OF ANALYSISReport Number : Project Information : NC 28037 23-270-0005 00012 CES Group 274 N. Hwy 16, Ste 300 Greg Hans Denver Received : 09/27/2023 East Lincoln Fire Department Report Date : 10/09/2023 Sample ID : Lab No : Sampled:MW-103 96366 Matrix: 9/26/2023 10:00 Aqueous Analytical Method: Prep Method: Test Results Units MDL MQL By Analytical Batch Date / Time Analyzed DF 6200 PT 6200B Prep Batch(es):V38694 10/04/23 09:00 848 µg/L 42.0 100m,p-Xylene 100 10/04/23 23:26 V38696MSA 1340 µg/L 21.0 50.0Xylene (Total)100 10/04/23 23:26 V38696 Surrogate: 4-Bromofluorobenzene 106 Limits: 70-130%10/04/23 23:26100 MSA V38696 Surrogate: Dibromofluoromethane 97.2 Limits: 70-130%10/04/23 23:26100 MSA V38696 Surrogate: 1,2-Dichloroethane - d4 89.6 Limits: 70-130%10/04/23 23:26100 MSA V38696 Surrogate: Toluene-d8 98.8 Limits: 70-130%10/04/23 23:26100 MSA V38696 Qualifiers/ Definitions Estimated valueJDilution FactorDF Method Quantitation LimitMQL Page 57 of 82 , REPORT OF ANALYSISReport Number : Project Information : NC 28037 23-270-0005 00012 CES Group 274 N. Hwy 16, Ste 300 Greg Hans Denver Received : 09/27/2023 East Lincoln Fire Department Report Date : 10/09/2023 Sample ID : Lab No : Sampled:MW-103 96366 Matrix: 9/26/2023 10:00 Aqueous Analytical Method: Prep Method: Test Results Units MDL MQL By Analytical Batch Date / Time Analyzed DF MAVPH (Prep) MADEP-VPH Prep Batch(es):V38482 09/28/23 08:00 7800 µg/L 115 500Aliphatic C5-C8 10 09/29/23 07:12 V38483TBL 5040 µg/L 258 500Aliphatic C9-C12 10 09/29/23 07:12 V38483TBL 2000 µg/L 40.2 500Aromatic C9-C10 10 09/29/23 07:12 V38483TBL MADEP-VPHSurrogate: 2,5-Dibromotoluene (FID)79.7 Limits: 70-130%09/29/23 07:1210 TBL MADEP-VPHSurrogate: 2,5-Dibromotoluene (PID)75.6 Limits: 70-130%09/29/23 07:1210 TBL Qualifiers/ Definitions Estimated valueJDilution FactorDF Method Quantitation LimitMQL Page 58 of 82 , REPORT OF ANALYSISReport Number : Project Information : NC 28037 23-270-0005 00012 CES Group 274 N. Hwy 16, Ste 300 Greg Hans Denver Received : 09/27/2023 East Lincoln Fire Department Report Date : 10/09/2023 Sample ID : Lab No : Sampled:MW-303 96367 Matrix: 9/26/2023 11:00 Aqueous Analytical Method: Prep Method: Test Results Units MDL MQL By Analytical Batch Date / Time Analyzed DF 6200 PT 6200B Prep Batch(es):V38694 10/04/23 09:00 <1.80 µg/L 1.80 10.0Acetone 1 10/04/23 16:52 V38696MSA <0.180 µg/L 0.180 0.500Benzene 1 10/04/23 16:52 V38696MSA <0.210 µg/L 0.210 0.500Bromobenzene 1 10/04/23 16:52 V38696MSA <0.420 µg/L 0.420 1.00Bromochloromethane 1 10/04/23 16:52 V38696MSA <0.160 µg/L 0.160 0.500Bromodichloromethane 1 10/04/23 16:52 V38696MSA <1.50 µg/L 1.50 5.00Bromoform 1 10/04/23 16:52 V38696MSA <0.280 µg/L 0.280 1.00Bromomethane 1 10/04/23 16:52 V38696MSA <0.180 µg/L 0.180 0.500n-Butylbenzene 1 10/04/23 16:52 V38696MSA <0.200 µg/L 0.200 0.500sec-Butyl benzene 1 10/04/23 16:52 V38696MSA <0.920 µg/L 0.920 2.00tert-Butyl benzene 1 10/04/23 16:52 V38696MSA <0.180 µg/L 0.180 0.500Carbon Tetrachloride 1 10/04/23 16:52 V38696MSA <0.190 µg/L 0.190 0.500Chlorobenzene 1 10/04/23 16:52 V38696MSA <0.190 µg/L 0.190 0.500Chlorodibromomethane 1 10/04/23 16:52 V38696MSA <0.430 µg/L 0.430 1.00Chloroethane 1 10/04/23 16:52 V38696MSA <0.220 µg/L 0.220 0.500Chloroform 1 10/04/23 16:52 V38696MSA <0.220 µg/L 0.220 0.500Chloromethane 1 10/04/23 16:52 V38696MSA <0.200 µg/L 0.200 0.5002-Chlorotoluene 1 10/04/23 16:52 V38696MSA <0.200 µg/L 0.200 0.5004-Chlorotoluene 1 10/04/23 16:52 V38696MSA <0.500 µg/L 0.500 0.500Di-Isopropyl Ether (DIPE)1 10/04/23 16:52 V38696MSA <1.10 µg/L 1.10 2.001,2-Dibromo-3-Chloropropane 1 10/04/23 16:52 V38696MSA <0.200 µg/L 0.200 0.5001,2-Dibromoethane 1 10/04/23 16:52 V38696MSA <0.230 µg/L 0.230 0.500Dibromomethane 1 10/04/23 16:52 V38696MSA Qualifiers/ Definitions Estimated valueJDilution FactorDF Method Quantitation LimitMQL Page 59 of 82 , REPORT OF ANALYSISReport Number : Project Information : NC 28037 23-270-0005 00012 CES Group 274 N. Hwy 16, Ste 300 Greg Hans Denver Received : 09/27/2023 East Lincoln Fire Department Report Date : 10/09/2023 Sample ID : Lab No : Sampled:MW-303 96367 Matrix: 9/26/2023 11:00 Aqueous Analytical Method: Prep Method: Test Results Units MDL MQL By Analytical Batch Date / Time Analyzed DF 6200 PT 6200B Prep Batch(es):V38694 10/04/23 09:00 <0.220 µg/L 0.220 0.5001,2-Dichlorobenzene 1 10/04/23 16:52 V38696MSA <0.190 µg/L 0.190 0.5001,3-Dichlorobenzene 1 10/04/23 16:52 V38696MSA <0.210 µg/L 0.210 0.5001,4-Dichlorobenzene 1 10/04/23 16:52 V38696MSA <1.20 µg/L 1.20 5.00Dichlorodifluoromethane 1 10/04/23 16:52 V38696MSA <0.240 µg/L 0.240 0.5001,1-Dichloroethane 1 10/04/23 16:52 V38696MSA <0.150 µg/L 0.150 0.5001,2-Dichloroethane 1 10/04/23 16:52 V38696MSA <0.150 µg/L 0.150 0.5001,1-Dichloroethene 1 10/04/23 16:52 V38696MSA <0.200 µg/L 0.200 0.500cis-1,2-Dichloroethene 1 10/04/23 16:52 V38696MSA <0.180 µg/L 0.180 0.500trans-1,2-Dichloroethene 1 10/04/23 16:52 V38696MSA <0.190 µg/L 0.190 0.5001,2-Dichloropropane 1 10/04/23 16:52 V38696MSA <0.130 µg/L 0.130 0.5001,3-Dichloropropane 1 10/04/23 16:52 V38696MSA <0.210 µg/L 0.210 2.002,2-Dichloropropane 1 10/04/23 16:52 V38696MSA <0.200 µg/L 0.200 0.5001,1-Dichloropropene 1 10/04/23 16:52 V38696MSA <0.210 µg/L 0.210 0.500cis-1,3-Dichloropropene 1 10/04/23 16:52 V38696MSA <0.150 µg/L 0.150 0.500trans-1,3-Dichloropropene 1 10/04/23 16:52 V38696MSA <42.0 µg/L 42.0 200Ethanol 1 10/04/23 16:52 V38696MSA <0.170 µg/L 0.170 0.500Ethylbenzene 1 10/04/23 16:52 V38696MSA <0.350 µg/L 0.350 3.00Hexachlorobutadiene 1 10/04/23 16:52 V38696MSA <0.380 µg/L 0.380 1.002-Hexanone 1 10/04/23 16:52 V38696MSA <0.180 µg/L 0.180 0.500Isopropylbenzene 1 10/04/23 16:52 V38696MSA <0.089 µg/L 0.089 0.5004-Isopropyl toluene 1 10/04/23 16:52 V38696MSA <0.710 µg/L 0.710 5.00Methyl Ethyl Ketone (MEK)1 10/04/23 16:52 V38696MSA Qualifiers/ Definitions Estimated valueJDilution FactorDF Method Quantitation LimitMQL Page 60 of 82 , REPORT OF ANALYSISReport Number : Project Information : NC 28037 23-270-0005 00012 CES Group 274 N. Hwy 16, Ste 300 Greg Hans Denver Received : 09/27/2023 East Lincoln Fire Department Report Date : 10/09/2023 Sample ID : Lab No : Sampled:MW-303 96367 Matrix: 9/26/2023 11:00 Aqueous Analytical Method: Prep Method: Test Results Units MDL MQL By Analytical Batch Date / Time Analyzed DF 6200 PT 6200B Prep Batch(es):V38694 10/04/23 09:00 <0.140 µg/L 0.140 1.00Methyl tert-butyl ether (MTBE)1 10/04/23 16:52 V38696MSA <0.078 µg/L 0.078 1.004-Methyl-2-Pentanone 1 10/04/23 16:52 V38696MSA <0.330 µg/L 0.330 2.00Methylene Chloride 1 10/04/23 16:52 V38696MSA <0.470 µg/L 0.470 1.00Naphthalene 1 10/04/23 16:52 V38696MSA <0.190 µg/L 0.190 0.500n-Propylbenzene 1 10/04/23 16:52 V38696MSA <0.220 µg/L 0.220 0.500Styrene 1 10/04/23 16:52 V38696MSA <0.160 µg/L 0.160 0.5001,1,1,2-Tetrachloroethane 1 10/04/23 16:52 V38696MSA <0.160 µg/L 0.160 0.5001,1,2,2-Tetrachloroethane 1 10/04/23 16:52 V38696MSA <0.220 µg/L 0.220 0.500Tetrachloroethene 1 10/04/23 16:52 V38696MSA <0.220 µg/L 0.220 0.500Toluene 1 10/04/23 16:52 V38696MSA <0.380 µg/L 0.380 0.5001,2,3-Trichlorobenzene 1 10/04/23 16:52 V38696MSA <0.310 µg/L 0.310 0.5001,2,4-Trichlorobenzene 1 10/04/23 16:52 V38696MSA <0.160 µg/L 0.160 0.5001,1,1-Trichloroethane 1 10/04/23 16:52 V38696MSA <0.096 µg/L 0.096 0.5001,1,2-Trichloroethane 1 10/04/23 16:52 V38696MSA <0.180 µg/L 0.180 0.500Trichloroethene 1 10/04/23 16:52 V38696MSA <0.180 µg/L 0.180 0.500Trichlorofluoromethane 1 10/04/23 16:52 V38696MSA <0.270 µg/L 0.270 0.5001,2,3-Trichloropropane 1 10/04/23 16:52 V38696MSA <0.190 µg/L 0.190 0.5001,2,4-Trimethylbenzene 1 10/04/23 16:52 V38696MSA <0.180 µg/L 0.180 0.5001,3,5-Trimethylbenzene 1 10/04/23 16:52 V38696MSA <1.00 µg/L 1.00 5.00Vinyl Acetate 1 10/04/23 16:52 V38696MSA <0.170 µg/L 0.170 0.500Vinyl Chloride 1 10/04/23 16:52 V38696MSA <0.210 µg/L 0.210 0.500o-Xylene 1 10/04/23 16:52 V38696MSA Qualifiers/ Definitions Estimated valueJDilution FactorDF Method Quantitation LimitMQL Page 61 of 82 , REPORT OF ANALYSISReport Number : Project Information : NC 28037 23-270-0005 00012 CES Group 274 N. Hwy 16, Ste 300 Greg Hans Denver Received : 09/27/2023 East Lincoln Fire Department Report Date : 10/09/2023 Sample ID : Lab No : Sampled:MW-303 96367 Matrix: 9/26/2023 11:00 Aqueous Analytical Method: Prep Method: Test Results Units MDL MQL By Analytical Batch Date / Time Analyzed DF 6200 PT 6200B Prep Batch(es):V38694 10/04/23 09:00 <0.420 µg/L 0.420 1.00m,p-Xylene 1 10/04/23 16:52 V38696MSA <0.21 µg/L 0.210 0.500Xylene (Total)1 10/04/23 16:52 V38696 Surrogate: 4-Bromofluorobenzene 106 Limits: 70-130%10/04/23 16:521 MSA V38696 Surrogate: Dibromofluoromethane 96.8 Limits: 70-130%10/04/23 16:521 MSA V38696 Surrogate: 1,2-Dichloroethane - d4 88.0 Limits: 70-130%10/04/23 16:521 MSA V38696 Surrogate: Toluene-d8 99.8 Limits: 70-130%10/04/23 16:521 MSA V38696 Qualifiers/ Definitions Estimated valueJDilution FactorDF Method Quantitation LimitMQL Page 62 of 82 , REPORT OF ANALYSISReport Number : Project Information : NC 28037 23-270-0005 00012 CES Group 274 N. Hwy 16, Ste 300 Greg Hans Denver Received : 09/27/2023 East Lincoln Fire Department Report Date : 10/09/2023 Sample ID : Lab No : Sampled:MW-303 96367 Matrix: 9/26/2023 11:00 Aqueous Analytical Method: Prep Method: Test Results Units MDL MQL By Analytical Batch Date / Time Analyzed DF MAVPH (Prep) MADEP-VPH Prep Batch(es):V38482 09/28/23 08:00 <11.5 µg/L 11.5 50.0Aliphatic C5-C8 1 09/28/23 18:45 V38483TBL <25.8 µg/L 25.8 50.0Aliphatic C9-C12 1 09/28/23 18:45 V38483TBL <4.02 µg/L 4.02 50.0Aromatic C9-C10 1 09/28/23 18:45 V38483TBL MADEP-VPHSurrogate: 2,5-Dibromotoluene (FID)104 Limits: 70-130%09/28/23 18:451 TBL MADEP-VPHSurrogate: 2,5-Dibromotoluene (PID)92.4 Limits: 70-130%09/28/23 18:451 TBL Qualifiers/ Definitions Estimated valueJDilution FactorDF Method Quantitation LimitMQL Page 63 of 82 Quality Control Data 23-270-0005Report No: Project Description: Client ID:CES Group East Lincoln Fire Department QC Prep Batch Method: Volatile Organic Compounds - GC/MS 6200B V38614QC Analytical Batch(es): Analysis Method: Analysis Description: 6200 PT QC Prep:V38613 Associated Lab Samples: 96357, 96358, 96359, 96360, 96361, 96362, 96363 LRB-V38613 Matrix: AQULab Reagent Blank Parameter AnalyzedMQLMDLBlank ResultUnits % Recovery % Rec Limits 10/03/23 05:1410.01.80<1.80µg/LAcetone 10/03/23 05:140.5000.180<0.180µg/LBenzene 10/03/23 05:140.5000.210<0.210µg/LBromobenzene 10/03/23 05:141.000.420<0.420µg/LBromochloromethane 10/03/23 05:140.5000.160<0.160µg/LBromodichloromethane 10/03/23 05:145.001.50<1.50µg/LBromoform 10/03/23 05:141.000.280<0.280µg/LBromomethane 10/03/23 05:140.5000.180<0.180µg/Ln-Butylbenzene 10/03/23 05:140.5000.200<0.200µg/Lsec-Butyl benzene 10/03/23 05:142.000.920<0.920µg/Ltert-Butyl benzene 10/03/23 05:140.5000.180<0.180µg/LCarbon Tetrachloride 10/03/23 05:140.5000.190<0.190µg/LChlorobenzene 10/03/23 05:140.5000.190<0.190µg/LChlorodibromomethane 10/03/23 05:141.000.430<0.430µg/LChloroethane 10/03/23 05:140.5000.220<0.220µg/LChloroform 10/03/23 05:140.5000.220<0.220µg/LChloromethane 10/03/23 05:140.5000.200<0.200µg/L2-Chlorotoluene 10/03/23 05:140.5000.200<0.200µg/L4-Chlorotoluene 10/03/23 05:140.5000.500<0.500µg/LDi-Isopropyl Ether (DIPE) 10/03/23 05:142.001.10<1.10µg/L1,2-Dibromo-3-Chloropropane 10/03/23 05:140.5000.200<0.200µg/L1,2-Dibromoethane 10/03/23 05:140.5000.230<0.230µg/LDibromomethane 10/03/23 05:140.5000.220<0.220µg/L1,2-Dichlorobenzene 10/03/23 05:140.5000.190<0.190µg/L1,3-Dichlorobenzene 10/03/23 05:140.5000.210<0.210µg/L1,4-Dichlorobenzene 10/03/23 05:145.001.20<1.20µg/LDichlorodifluoromethane 10/03/23 05:140.5000.240<0.240µg/L1,1-Dichloroethane Page 1 of 16Date:10/09/2023 03:16 PM Page 64 of 82 Quality Control Data 23-270-0005Report No: Project Description: Client ID:CES Group East Lincoln Fire Department QC Prep Batch Method: Volatile Organic Compounds - GC/MS 6200B V38614QC Analytical Batch(es): Analysis Method: Analysis Description: 6200 PT QC Prep:V38613 Associated Lab Samples: 96357, 96358, 96359, 96360, 96361, 96362, 96363 LRB-V38613 Matrix: AQULab Reagent Blank Parameter AnalyzedMQLMDLBlank ResultUnits % Recovery % Rec Limits 10/03/23 05:140.5000.150<0.150µg/L1,2-Dichloroethane 10/03/23 05:140.5000.150<0.150µg/L1,1-Dichloroethene 10/03/23 05:140.5000.200<0.200µg/Lcis-1,2-Dichloroethene 10/03/23 05:140.5000.180<0.180µg/Ltrans-1,2-Dichloroethene 10/03/23 05:140.5000.190<0.190µg/L1,2-Dichloropropane 10/03/23 05:140.5000.130<0.130µg/L1,3-Dichloropropane 10/03/23 05:142.000.210<0.210µg/L2,2-Dichloropropane 10/03/23 05:140.5000.200<0.200µg/L1,1-Dichloropropene 10/03/23 05:140.5000.210<0.210µg/Lcis-1,3-Dichloropropene 10/03/23 05:140.5000.150<0.150µg/Ltrans-1,3-Dichloropropene 10/03/23 05:1420042.0<42.0µg/LEthanol 10/03/23 05:140.5000.170<0.170µg/LEthylbenzene 10/03/23 05:143.000.350<0.350µg/LHexachlorobutadiene 10/03/23 05:141.000.380<0.380µg/L2-Hexanone 10/03/23 05:140.5000.180<0.180µg/LIsopropylbenzene 10/03/23 05:140.5000.089<0.089µg/L4-Isopropyl toluene 10/03/23 05:145.000.710<0.710µg/LMethyl Ethyl Ketone (MEK) 10/03/23 05:141.000.140<0.140µg/LMethyl tert-butyl ether (MTBE) 10/03/23 05:141.000.078<0.078µg/L4-Methyl-2-Pentanone 10/03/23 05:142.000.330<0.330µg/LMethylene Chloride 10/03/23 05:141.000.470<0.470µg/LNaphthalene 10/03/23 05:140.5000.190<0.190µg/Ln-Propylbenzene 10/03/23 05:140.5000.220<0.220µg/LStyrene 10/03/23 05:140.5000.160<0.160µg/L1,1,1,2-Tetrachloroethane 10/03/23 05:140.5000.160<0.160µg/L1,1,2,2-Tetrachloroethane 10/03/23 05:140.5000.220<0.220µg/LTetrachloroethene 10/03/23 05:140.5000.220<0.220µg/LToluene Page 2 of 16Date:10/09/2023 03:16 PM Page 65 of 82 Quality Control Data 23-270-0005Report No: Project Description: Client ID:CES Group East Lincoln Fire Department QC Prep Batch Method: Volatile Organic Compounds - GC/MS 6200B V38614QC Analytical Batch(es): Analysis Method: Analysis Description: 6200 PT QC Prep:V38613 Associated Lab Samples: 96357, 96358, 96359, 96360, 96361, 96362, 96363 LRB-V38613 Matrix: AQULab Reagent Blank Parameter AnalyzedMQLMDLBlank ResultUnits % Recovery % Rec Limits 10/03/23 05:140.5000.380<0.380µg/L1,2,3-Trichlorobenzene 10/03/23 05:140.5000.310<0.310µg/L1,2,4-Trichlorobenzene 10/03/23 05:140.5000.160<0.160µg/L1,1,1-Trichloroethane 10/03/23 05:140.5000.096<0.096µg/L1,1,2-Trichloroethane 10/03/23 05:140.5000.180<0.180µg/LTrichloroethene 10/03/23 05:140.5000.180<0.180µg/LTrichlorofluoromethane 10/03/23 05:140.5000.270<0.270µg/L1,2,3-Trichloropropane 10/03/23 05:140.5000.190<0.190µg/L1,2,4-Trimethylbenzene 10/03/23 05:140.5000.180<0.180µg/L1,3,5-Trimethylbenzene 10/03/23 05:145.001.00<1.00µg/LVinyl Acetate 10/03/23 05:140.5000.170<0.170µg/LVinyl Chloride 10/03/23 05:140.5000.210<0.210µg/Lo-Xylene 10/03/23 05:141.000.420<0.420µg/Lm,p-Xylene 10/03/23 05:144-Bromofluorobenzene (S)105 70-130 10/03/23 05:14Dibromofluoromethane (S)99.4 70-130 10/03/23 05:141,2-Dichloroethane - d4 (S)90.2 70-130 10/03/23 05:14Toluene-d8 (S)99.8 70-130 LCS-V38613Laboratory Control Sample Parameter LCS %RecLCS Result Spike Conc.Units % Rec Limits 144*28.820.0µg/LBromomethane 60-140 Page 3 of 16* QC Fail Date:10/09/2023 03:16 PM Page 66 of 82 Quality Control Data 23-270-0005Report No: Project Description: Client ID:CES Group East Lincoln Fire Department QC Prep Batch Method: Volatile Organic Compounds - GC/MS 6200B V38614QC Analytical Batch(es): Analysis Method: Analysis Description: 6200 PT QC Prep:V38613 LCS-V38613 LCSD-V38613Laboratory Control Sample & LCSD LCSD ResultParameter Max RPD LCSD % Rec LCS %Rec LCS Result Spike Conc.Units % Rec Limits RPD 50.5 12613052.040.0µg/LAcetone 40-160 2.9 20.0 21.4 10710721.320.0µg/LBenzene 70-130 0.4 20.0 21.5 10810921.720.0µg/LBromobenzene 70-130 0.9 20.0 21.1 10610520.920.0µg/LBromochloromethane 70-130 0.9 20.0 20.5 10310220.420.0µg/LBromodichloromethane 70-130 0.4 20.0 17.5 87.588.517.720.0µg/LBromoform 70-130 1.1 20.0 21.3 10710821.520.0µg/Ln-Butylbenzene 70-130 0.9 20.0 21.5 10810821.520.0µg/Lsec-Butyl benzene 70-130 0.0 20.0 22.2 11111122.220.0µg/Ltert-Butyl benzene 70-130 0.0 20.0 20.9 10511923.720.0µg/LCarbon Tetrachloride 70-130 12.5 20.0 21.2 10610621.120.0µg/LChlorobenzene 70-130 0.4 20.0 19.6 98.010120.220.0µg/LChlorodibromomethane 70-130 3.0 20.0 20.1 10110120.120.0µg/LChloroethane 60-140 0.0 20.0 21.0 10510520.920.0µg/LChloroform 70-130 0.4 20.0 24.6 12312224.320.0µg/LChloromethane 60-140 1.2 20.0 22.1 11110821.620.0µg/L2-Chlorotoluene 70-130 2.2 20.0 21.7 10910721.320.0µg/L4-Chlorotoluene 70-130 1.8 20.0 20.6 10310320.620.0µg/LDi-Isopropyl Ether (DIPE)70-130 0.0 20.0 17.7 88.588.517.720.0µg/L1,2-Dibromo-3-Chloropropane 70-130 0.0 20.0 19.7 98.510120.220.0µg/L1,2-Dibromoethane 70-130 2.5 20.0 19.4 97.099.519.920.0µg/LDibromomethane 70-130 2.5 20.0 21.7 10910921.720.0µg/L1,2-Dichlorobenzene 70-130 0.0 20.0 21.6 10810821.620.0µg/L1,3-Dichlorobenzene 70-130 0.0 20.0 20.5 10310420.720.0µg/L1,4-Dichlorobenzene 70-130 0.9 20.0 22.5 11311322.620.0µg/LDichlorodifluoromethane 60-140 0.4 20.0 21.7 10910921.820.0µg/L1,1-Dichloroethane 70-130 0.4 20.0 Page 4 of 16Date:10/09/2023 03:16 PM Page 67 of 82 Quality Control Data 23-270-0005Report No: Project Description: Client ID:CES Group East Lincoln Fire Department QC Prep Batch Method: Volatile Organic Compounds - GC/MS 6200B V38614QC Analytical Batch(es): Analysis Method: Analysis Description: 6200 PT QC Prep:V38613 LCS-V38613 LCSD-V38613Laboratory Control Sample & LCSD LCSD ResultParameter Max RPD LCSD % Rec LCS %Rec LCS Result Spike Conc.Units % Rec Limits RPD 18.9 94.596.019.220.0µg/L1,2-Dichloroethane 70-130 1.5 20.0 22.0 11011122.120.0µg/L1,1-Dichloroethene 70-130 0.4 20.0 21.1 10610621.120.0µg/Lcis-1,2-Dichloroethene 70-130 0.0 20.0 21.8 10910521.020.0µg/Ltrans-1,2-Dichloroethene 70-130 3.7 20.0 21.4 10710921.820.0µg/L1,2-Dichloropropane 70-130 1.8 20.0 19.6 98.099.019.820.0µg/L1,3-Dichloropropane 70-130 1.0 20.0 18.7 93.593.018.620.0µg/L2,2-Dichloropropane 70-130 0.5 20.0 22.8 11411322.520.0µg/L1,1-Dichloropropene 70-130 1.3 20.0 19.8 99.096.019.220.0µg/Lcis-1,3-Dichloropropene 70-130 3.0 20.0 18.9 94.594.518.920.0µg/Ltrans-1,3-Dichloropropene 70-130 0.0 20.0 467 93.485.4427500µg/LEthanol 60-140 8.9 20.0 20.3 10210320.620.0µg/LEthylbenzene 70-130 1.4 20.0 21.8 10910721.320.0µg/LHexachlorobutadiene 70-130 2.3 20.0 18.3 91.595.019.020.0µg/L2-Hexanone 60-140 3.7 20.0 22.7 11411322.520.0µg/LIsopropylbenzene 70-130 0.8 20.0 22.3 11211222.320.0µg/L4-Isopropyl toluene 70-130 0.0 20.0 19.3 96.599.019.820.0µg/LMethyl Ethyl Ketone (MEK)60-140 2.5 20.0 19.2 96.097.019.420.0µg/LMethyl tert-butyl ether (MTBE)70-130 1.0 20.0 17.4 87.089.517.920.0µg/L4-Methyl-2-Pentanone 60-140 2.8 20.0 21.6 10810821.520.0µg/LMethylene Chloride 70-130 0.4 20.0 18.1 90.593.018.620.0µg/LNaphthalene 70-130 2.7 20.0 21.5 10810520.920.0µg/Ln-Propylbenzene 70-130 2.8 20.0 20.8 10410621.220.0µg/LStyrene 70-130 1.9 20.0 21.4 10710821.520.0µg/L1,1,1,2-Tetrachloroethane 70-130 0.4 20.0 19.7 98.595.519.120.0µg/L1,1,2,2-Tetrachloroethane 70-130 3.0 20.0 22.4 11210921.720.0µg/LTetrachloroethene 70-130 3.1 20.0 Page 5 of 16Date:10/09/2023 03:16 PM Page 68 of 82 Quality Control Data 23-270-0005Report No: Project Description: Client ID:CES Group East Lincoln Fire Department QC Prep Batch Method: Volatile Organic Compounds - GC/MS 6200B V38614QC Analytical Batch(es): Analysis Method: Analysis Description: 6200 PT QC Prep:V38613 LCS-V38613 LCSD-V38613Laboratory Control Sample & LCSD LCSD ResultParameter Max RPD LCSD % Rec LCS %Rec LCS Result Spike Conc.Units % Rec Limits RPD 20.8 10410320.620.0µg/LToluene 70-130 0.9 20.0 20.8 10410420.720.0µg/L1,2,3-Trichlorobenzene 70-130 0.4 20.0 19.3 96.594.018.820.0µg/L1,2,4-Trichlorobenzene 70-130 2.6 20.0 21.3 10710520.920.0µg/L1,1,1-Trichloroethane 70-130 1.8 20.0 20.5 10310521.020.0µg/L1,1,2-Trichloroethane 70-130 2.4 20.0 22.2 11111322.620.0µg/LTrichloroethene 70-130 1.7 20.0 21.7 10910821.620.0µg/LTrichlorofluoromethane 60-140 0.4 20.0 18.8 94.094.518.920.0µg/L1,2,3-Trichloropropane 70-130 0.5 20.0 22.1 11111122.220.0µg/L1,2,4-Trimethylbenzene 70-130 0.4 20.0 22.7 11411222.420.0µg/L1,3,5-Trimethylbenzene 70-130 1.3 20.0 17.6 88.067.013.420.0µg/LVinyl Acetate 60-140 27.0*20.0 23.8 11911623.220.0µg/LVinyl Chloride 60-140 2.5 20.0 21.3 10710520.920.0µg/Lo-Xylene 70-130 1.8 20.0 42.9 10710843.040.0µg/Lm,p-Xylene 70-130 0.2 20.0 1021014-Bromofluorobenzene (S)70-130 98.497.4Dibromofluoromethane (S)70-130 90.892.61,2-Dichloroethane - d4 (S)70-130 101100Toluene-d8 (S)70-130 Page 6 of 16* QC Fail Date:10/09/2023 03:16 PM Page 69 of 82 Quality Control Data 23-270-0005Report No: Project Description: Client ID:CES Group East Lincoln Fire Department QC Prep Batch Method: Volatile Organic Compounds - GC/MS 6200B V38660QC Analytical Batch(es): Analysis Method: Analysis Description: 6200 PT QC Prep:V38659 Associated Lab Samples: 96358, 96362, 96363 LRB-V38659 Matrix: AQULab Reagent Blank Parameter AnalyzedMQLMDLBlank ResultUnits % Recovery % Rec Limits 10/03/23 18:070.5000.220<0.220µg/LToluene 10/03/23 18:074-Bromofluorobenzene (S)106 70-130 10/03/23 18:07Dibromofluoromethane (S)96.0 70-130 10/03/23 18:071,2-Dichloroethane - d4 (S)88.2 70-130 10/03/23 18:07Toluene-d8 (S)98.8 70-130 LCS-V38659 LCSD-V38659Laboratory Control Sample & LCSD LCSD ResultParameter Max RPD LCSD % Rec LCS %Rec LCS Result Spike Conc.Units % Rec Limits RPD 19.5 97.510020.020.0µg/LToluene 70-130 2.5 20.0 1011024-Bromofluorobenzene (S)70-130 96.895.0Dibromofluoromethane (S)70-130 92.892.81,2-Dichloroethane - d4 (S)70-130 101100Toluene-d8 (S)70-130 Page 7 of 16Date:10/09/2023 03:16 PM Page 70 of 82 Quality Control Data 23-270-0005Report No: Project Description: Client ID:CES Group East Lincoln Fire Department QC Prep Batch Method: Volatile Organic Compounds - GC/MS 6200B V38696QC Analytical Batch(es): Analysis Method: Analysis Description: 6200 PT QC Prep:V38694 Associated Lab Samples: 96364, 96365, 96366, 96367 LRB-V38694 Matrix: AQULab Reagent Blank Parameter AnalyzedMQLMDLBlank ResultUnits % Recovery % Rec Limits 10/04/23 15:0710.01.80<1.80µg/LAcetone 10/04/23 15:070.5000.180<0.180µg/LBenzene 10/04/23 15:070.5000.210<0.210µg/LBromobenzene 10/04/23 15:071.000.420<0.420µg/LBromochloromethane 10/04/23 15:070.5000.160<0.160µg/LBromodichloromethane 10/04/23 15:075.001.50<1.50µg/LBromoform 10/04/23 15:071.000.280<0.280µg/LBromomethane 10/04/23 15:070.5000.180<0.180µg/Ln-Butylbenzene 10/04/23 15:070.5000.200<0.200µg/Lsec-Butyl benzene 10/04/23 15:072.000.920<0.920µg/Ltert-Butyl benzene 10/04/23 15:070.5000.180<0.180µg/LCarbon Tetrachloride 10/04/23 15:070.5000.190<0.190µg/LChlorobenzene 10/04/23 15:070.5000.190<0.190µg/LChlorodibromomethane 10/04/23 15:071.000.430<0.430µg/LChloroethane 10/04/23 15:070.5000.220<0.220µg/LChloroform 10/04/23 15:070.5000.220<0.220µg/LChloromethane 10/04/23 15:070.5000.200<0.200µg/L2-Chlorotoluene 10/04/23 15:070.5000.200<0.200µg/L4-Chlorotoluene 10/04/23 15:070.5000.500<0.500µg/LDi-Isopropyl Ether (DIPE) 10/04/23 15:072.001.10<1.10µg/L1,2-Dibromo-3-Chloropropane 10/04/23 15:070.5000.200<0.200µg/L1,2-Dibromoethane 10/04/23 15:070.5000.230<0.230µg/LDibromomethane 10/04/23 15:070.5000.220<0.220µg/L1,2-Dichlorobenzene 10/04/23 15:070.5000.190<0.190µg/L1,3-Dichlorobenzene 10/04/23 15:070.5000.210<0.210µg/L1,4-Dichlorobenzene 10/04/23 15:075.001.20<1.20µg/LDichlorodifluoromethane 10/04/23 15:070.5000.240<0.240µg/L1,1-Dichloroethane Page 8 of 16Date:10/09/2023 03:16 PM Page 71 of 82 Quality Control Data 23-270-0005Report No: Project Description: Client ID:CES Group East Lincoln Fire Department QC Prep Batch Method: Volatile Organic Compounds - GC/MS 6200B V38696QC Analytical Batch(es): Analysis Method: Analysis Description: 6200 PT QC Prep:V38694 Associated Lab Samples: 96364, 96365, 96366, 96367 LRB-V38694 Matrix: AQULab Reagent Blank Parameter AnalyzedMQLMDLBlank ResultUnits % Recovery % Rec Limits 10/04/23 15:070.5000.150<0.150µg/L1,2-Dichloroethane 10/04/23 15:070.5000.150<0.150µg/L1,1-Dichloroethene 10/04/23 15:070.5000.200<0.200µg/Lcis-1,2-Dichloroethene 10/04/23 15:070.5000.180<0.180µg/Ltrans-1,2-Dichloroethene 10/04/23 15:070.5000.190<0.190µg/L1,2-Dichloropropane 10/04/23 15:070.5000.130<0.130µg/L1,3-Dichloropropane 10/04/23 15:072.000.210<0.210µg/L2,2-Dichloropropane 10/04/23 15:070.5000.200<0.200µg/L1,1-Dichloropropene 10/04/23 15:070.5000.210<0.210µg/Lcis-1,3-Dichloropropene 10/04/23 15:070.5000.150<0.150µg/Ltrans-1,3-Dichloropropene 10/04/23 15:0720042.0<42.0µg/LEthanol 10/04/23 15:070.5000.170<0.170µg/LEthylbenzene 10/04/23 15:073.000.350<0.350µg/LHexachlorobutadiene 10/04/23 15:071.000.380<0.380µg/L2-Hexanone 10/04/23 15:070.5000.180<0.180µg/LIsopropylbenzene 10/04/23 15:070.5000.089<0.089µg/L4-Isopropyl toluene 10/04/23 15:075.000.710<0.710µg/LMethyl Ethyl Ketone (MEK) 10/04/23 15:071.000.140<0.140µg/LMethyl tert-butyl ether (MTBE) 10/04/23 15:071.000.078<0.078µg/L4-Methyl-2-Pentanone 10/04/23 15:072.000.330<0.330µg/LMethylene Chloride 10/04/23 15:071.000.470<0.470µg/LNaphthalene 10/04/23 15:070.5000.190<0.190µg/Ln-Propylbenzene 10/04/23 15:070.5000.220<0.220µg/LStyrene 10/04/23 15:070.5000.160<0.160µg/L1,1,1,2-Tetrachloroethane 10/04/23 15:070.5000.160<0.160µg/L1,1,2,2-Tetrachloroethane 10/04/23 15:070.5000.220<0.220µg/LTetrachloroethene 10/04/23 15:070.5000.220<0.220µg/LToluene Page 9 of 16Date:10/09/2023 03:16 PM Page 72 of 82 Quality Control Data 23-270-0005Report No: Project Description: Client ID:CES Group East Lincoln Fire Department QC Prep Batch Method: Volatile Organic Compounds - GC/MS 6200B V38696QC Analytical Batch(es): Analysis Method: Analysis Description: 6200 PT QC Prep:V38694 Associated Lab Samples: 96364, 96365, 96366, 96367 LRB-V38694 Matrix: AQULab Reagent Blank Parameter AnalyzedMQLMDLBlank ResultUnits % Recovery % Rec Limits 10/04/23 15:070.5000.380<0.380µg/L1,2,3-Trichlorobenzene 10/04/23 15:070.5000.310<0.310µg/L1,2,4-Trichlorobenzene 10/04/23 15:070.5000.160<0.160µg/L1,1,1-Trichloroethane 10/04/23 15:070.5000.096<0.096µg/L1,1,2-Trichloroethane 10/04/23 15:070.5000.180<0.180µg/LTrichloroethene 10/04/23 15:070.5000.180<0.180µg/LTrichlorofluoromethane 10/04/23 15:070.5000.270<0.270µg/L1,2,3-Trichloropropane 10/04/23 15:070.5000.190<0.190µg/L1,2,4-Trimethylbenzene 10/04/23 15:070.5000.180<0.180µg/L1,3,5-Trimethylbenzene 10/04/23 15:075.001.00<1.00µg/LVinyl Acetate 10/04/23 15:070.5000.170<0.170µg/LVinyl Chloride 10/04/23 15:070.5000.210<0.210µg/Lo-Xylene 10/04/23 15:071.000.420<0.420µg/Lm,p-Xylene 10/04/23 15:074-Bromofluorobenzene (S)104 70-130 10/04/23 15:07Dibromofluoromethane (S)96.4 70-130 10/04/23 15:071,2-Dichloroethane - d4 (S)88.4 70-130 10/04/23 15:07Toluene-d8 (S)99.8 70-130 LCS-V38694 LCSD-V38694Laboratory Control Sample & LCSD LCSD ResultParameter Max RPD LCSD % Rec LCS %Rec LCS Result Spike Conc.Units % Rec Limits RPD 58.3 14615160.540.0µg/LAcetone 40-160 3.7 20.0 20.7 10410520.920.0µg/LBenzene 70-130 0.9 20.0 21.6 10810821.520.0µg/LBromobenzene 70-130 0.4 20.0 20.4 10210220.320.0µg/LBromochloromethane 70-130 0.4 20.0 20.6 10310320.520.0µg/LBromodichloromethane 70-130 0.4 20.0 Page 10 of 16Date:10/09/2023 03:16 PM Page 73 of 82 Quality Control Data 23-270-0005Report No: Project Description: Client ID:CES Group East Lincoln Fire Department QC Prep Batch Method: Volatile Organic Compounds - GC/MS 6200B V38696QC Analytical Batch(es): Analysis Method: Analysis Description: 6200 PT QC Prep:V38694 LCS-V38694 LCSD-V38694Laboratory Control Sample & LCSD LCSD ResultParameter Max RPD LCSD % Rec LCS %Rec LCS Result Spike Conc.Units % Rec Limits RPD 17.9 89.589.517.920.0µg/LBromoform 70-130 0.0 20.0 26.4 13213927.720.0µg/LBromomethane 60-140 4.8 20.0 21.6 10811222.320.0µg/Ln-Butylbenzene 70-130 3.1 20.0 21.4 10710821.520.0µg/Lsec-Butyl benzene 70-130 0.4 20.0 22.2 11111122.220.0µg/Ltert-Butyl benzene 70-130 0.0 20.0 19.8 99.098.519.720.0µg/LCarbon Tetrachloride 70-130 0.5 20.0 21.3 10710621.220.0µg/LChlorobenzene 70-130 0.4 20.0 20.8 10410320.520.0µg/LChlorodibromomethane 70-130 1.4 20.0 18.4 92.095.519.120.0µg/LChloroethane 60-140 3.7 20.0 20.0 10010120.120.0µg/LChloroform 70-130 0.4 20.0 22.2 11111322.520.0µg/LChloromethane 60-140 1.3 20.0 21.6 10810921.820.0µg/L2-Chlorotoluene 70-130 0.9 20.0 21.8 10911022.020.0µg/L4-Chlorotoluene 70-130 0.9 20.0 20.5 10310220.420.0µg/LDi-Isopropyl Ether (DIPE)70-130 0.4 20.0 17.9 89.593.018.620.0µg/L1,2-Dibromo-3-Chloropropane 70-130 3.8 20.0 21.2 10610821.520.0µg/L1,2-Dibromoethane 70-130 1.4 20.0 19.4 97.096.519.320.0µg/LDibromomethane 70-130 0.5 20.0 21.5 10810921.820.0µg/L1,2-Dichlorobenzene 70-130 1.3 20.0 21.8 10910821.620.0µg/L1,3-Dichlorobenzene 70-130 0.9 20.0 20.6 10310521.020.0µg/L1,4-Dichlorobenzene 70-130 1.9 20.0 18.7 93.594.518.920.0µg/LDichlorodifluoromethane 60-140 1.0 20.0 21.0 10510721.420.0µg/L1,1-Dichloroethane 70-130 1.8 20.0 18.6 93.096.519.320.0µg/L1,2-Dichloroethane 70-130 3.6 20.0 21.8 10910420.720.0µg/L1,1-Dichloroethene 70-130 5.1 20.0 20.6 10310220.420.0µg/Lcis-1,2-Dichloroethene 70-130 0.9 20.0 21.1 10610621.120.0µg/Ltrans-1,2-Dichloroethene 70-130 0.0 20.0 Page 11 of 16Date:10/09/2023 03:16 PM Page 74 of 82 Quality Control Data 23-270-0005Report No: Project Description: Client ID:CES Group East Lincoln Fire Department QC Prep Batch Method: Volatile Organic Compounds - GC/MS 6200B V38696QC Analytical Batch(es): Analysis Method: Analysis Description: 6200 PT QC Prep:V38694 LCS-V38694 LCSD-V38694Laboratory Control Sample & LCSD LCSD ResultParameter Max RPD LCSD % Rec LCS %Rec LCS Result Spike Conc.Units % Rec Limits RPD 21.1 10610821.620.0µg/L1,2-Dichloropropane 70-130 2.3 20.0 20.6 10310420.820.0µg/L1,3-Dichloropropane 70-130 0.9 20.0 21.3 10710921.820.0µg/L2,2-Dichloropropane 70-130 2.3 20.0 22.1 11111122.120.0µg/L1,1-Dichloropropene 70-130 0.0 20.0 20.7 10410420.720.0µg/Lcis-1,3-Dichloropropene 70-130 0.0 20.0 20.4 10210020.020.0µg/Ltrans-1,3-Dichloropropene 70-130 1.9 20.0 411 82.280.2401500µg/LEthanol 60-140 2.4 20.0 20.5 10310320.520.0µg/LEthylbenzene 70-130 0.0 20.0 22.3 11211422.820.0µg/LHexachlorobutadiene 70-130 2.2 20.0 23.5 11811021.920.0µg/L2-Hexanone 60-140 7.0 20.0 22.6 11311322.520.0µg/LIsopropylbenzene 70-130 0.4 20.0 22.2 11111322.520.0µg/L4-Isopropyl toluene 70-130 1.3 20.0 23.5 11811122.220.0µg/LMethyl Ethyl Ketone (MEK)60-140 5.6 20.0 20.1 10110320.620.0µg/LMethyl tert-butyl ether (MTBE)70-130 2.4 20.0 19.1 95.596.019.220.0µg/L4-Methyl-2-Pentanone 60-140 0.5 20.0 20.6 10310220.420.0µg/LMethylene Chloride 70-130 0.9 20.0 19.3 96.599.519.920.0µg/LNaphthalene 70-130 3.0 20.0 21.2 10610721.420.0µg/Ln-Propylbenzene 70-130 0.9 20.0 21.1 10610521.020.0µg/LStyrene 70-130 0.4 20.0 21.7 10910821.620.0µg/L1,1,1,2-Tetrachloroethane 70-130 0.4 20.0 20.9 10510621.220.0µg/L1,1,2,2-Tetrachloroethane 70-130 1.4 20.0 22.3 11211322.520.0µg/LTetrachloroethene 70-130 0.8 20.0 20.5 10310220.320.0µg/LToluene 70-130 0.9 20.0 22.4 11212124.220.0µg/L1,2,3-Trichlorobenzene 70-130 7.7 20.0 20.1 10110621.220.0µg/L1,2,4-Trichlorobenzene 70-130 5.3 20.0 20.4 10210420.820.0µg/L1,1,1-Trichloroethane 70-130 1.9 20.0 Page 12 of 16Date:10/09/2023 03:16 PM Page 75 of 82 Quality Control Data 23-270-0005Report No: Project Description: Client ID:CES Group East Lincoln Fire Department QC Prep Batch Method: Volatile Organic Compounds - GC/MS 6200B V38696QC Analytical Batch(es): Analysis Method: Analysis Description: 6200 PT QC Prep:V38694 LCS-V38694 LCSD-V38694Laboratory Control Sample & LCSD LCSD ResultParameter Max RPD LCSD % Rec LCS %Rec LCS Result Spike Conc.Units % Rec Limits RPD 21.2 10611222.320.0µg/L1,1,2-Trichloroethane 70-130 5.0 20.0 21.0 10510721.320.0µg/LTrichloroethene 70-130 1.4 20.0 20.0 10010220.320.0µg/LTrichlorofluoromethane 60-140 1.4 20.0 19.2 96.010420.720.0µg/L1,2,3-Trichloropropane 70-130 7.5 20.0 22.1 11111222.320.0µg/L1,2,4-Trimethylbenzene 70-130 0.9 20.0 22.6 11311322.520.0µg/L1,3,5-Trimethylbenzene 70-130 0.4 20.0 22.5 11310621.220.0µg/LVinyl Acetate 60-140 5.9 20.0 21.6 10810821.620.0µg/LVinyl Chloride 60-140 0.0 20.0 21.3 10710521.020.0µg/Lo-Xylene 70-130 1.4 20.0 42.7 10710843.140.0µg/Lm,p-Xylene 70-130 0.9 20.0 1001004-Bromofluorobenzene (S)70-130 94.295.0Dibromofluoromethane (S)70-130 91.291.81,2-Dichloroethane - d4 (S)70-130 100100Toluene-d8 (S)70-130 Page 13 of 16Date:10/09/2023 03:16 PM Page 76 of 82 Quality Control Data 23-270-0005Report No: Project Description: Client ID:CES Group East Lincoln Fire Department QC Prep Batch Method: Volatile Organic Compounds - GC/MS 6200B V38781QC Analytical Batch(es): Analysis Method: Analysis Description: 6200 PT QC Prep:V38780 Associated Lab Samples: 96364, 96365 LRB-V38780 Matrix: AQULab Reagent Blank Parameter AnalyzedMQLMDLBlank ResultUnits % Recovery % Rec Limits 10/05/23 16:430.5000.180<0.180µg/LBenzene 10/05/23 16:430.5000.220<0.220µg/LToluene 10/05/23 16:434-Bromofluorobenzene (S)105 70-130 10/05/23 16:43Dibromofluoromethane (S)96.2 70-130 10/05/23 16:431,2-Dichloroethane - d4 (S)88.6 70-130 10/05/23 16:43Toluene-d8 (S)99.4 70-130 LCS-V38780 LCSD-V38780Laboratory Control Sample & LCSD LCSD ResultParameter Max RPD LCSD % Rec LCS %Rec LCS Result Spike Conc.Units % Rec Limits RPD 21.5 10810821.620.0µg/LBenzene 70-130 0.4 20.0 21.0 10510520.920.0µg/LToluene 70-130 0.4 20.0 1001014-Bromofluorobenzene (S)70-130 95.494.2Dibromofluoromethane (S)70-130 91.091.41,2-Dichloroethane - d4 (S)70-130 100101Toluene-d8 (S)70-130 Page 14 of 16Date:10/09/2023 03:16 PM Page 77 of 82 Quality Control Data 23-270-0005Report No: Project Description: Client ID:CES Group East Lincoln Fire Department QC Prep Batch Method: Massachusetts VPH MADEP-VPH V38470QC Analytical Batch(es): Analysis Method: Analysis Description: MAVPH (Prep) QC Prep:V38469 Associated Lab Samples: 96357, 96359, 96361 LRB-V38469 Matrix: AQULab Reagent Blank Parameter AnalyzedMQLMDLBlank ResultUnits % Recovery % Rec Limits 09/27/23 19:5350.011.5<11.5µg/LAliphatic C5-C8 09/27/23 19:5350.025.8<25.8µg/LAliphatic C9-C12 09/27/23 19:5350.04.02<4.02µg/LAromatic C9-C10 09/27/23 19:532,5-Dibromotoluene (FID) (S)97.6 70-130 09/27/23 19:532,5-Dibromotoluene (PID) (S)81.2 70-130 LCS-V38469 LCSD-V38469Laboratory Control Sample & LCSD LCSD ResultParameter Max RPD LCSD % Rec LCS %Rec LCS Result Spike Conc.Units % Rec Limits RPD 285 95.092.6278300µg/LAliphatic C5-C8 70-130 2.4 50.0 357 119117351300µg/LAliphatic C9-C12 70-130 1.6 50.0 108 108108108100µg/LAromatic C9-C10 70-130 0.0 50.0 84.097.42,5-Dibromotoluene (FID) (S)70-130 10289.42,5-Dibromotoluene (PID) (S)70-130 Page 15 of 16Date:10/09/2023 03:16 PM Page 78 of 82 Quality Control Data 23-270-0005Report No: Project Description: Client ID:CES Group East Lincoln Fire Department QC Prep Batch Method: Massachusetts VPH MADEP-VPH V38483QC Analytical Batch(es): Analysis Method: Analysis Description: MAVPH (Prep) QC Prep:V38482 Associated Lab Samples: 96358, 96360, 96362, 96363, 96364, 96365, 96366, 96367 LRB-V38482 Matrix: AQULab Reagent Blank Parameter AnalyzedMQLMDLBlank ResultUnits % Recovery % Rec Limits 09/28/23 18:2150.011.5<11.5µg/LAliphatic C5-C8 09/28/23 18:2150.025.8<25.8µg/LAliphatic C9-C12 09/28/23 18:2150.04.02<4.02µg/LAromatic C9-C10 09/28/23 18:212,5-Dibromotoluene (FID) (S)81.5 70-130 09/28/23 18:212,5-Dibromotoluene (PID) (S)81.1 70-130 LCS-V38482 LCSD-V38482Laboratory Control Sample & LCSD LCSD ResultParameter Max RPD LCSD % Rec LCS %Rec LCS Result Spike Conc.Units % Rec Limits RPD 244 81.380.6242300µg/LAliphatic C5-C8 70-130 0.8 50.0 338 113110330300µg/LAliphatic C9-C12 70-130 2.3 50.0 96.3 96.396.496.4100µg/LAromatic C9-C10 70-130 0.1 50.0 11589.82,5-Dibromotoluene (FID) (S)70-130 85.877.92,5-Dibromotoluene (PID) (S)70-130 Page 16 of 16Date:10/09/2023 03:16 PM Page 79 of 82 Fed Ex UPS US Postal Client Lab Courier Other : Shipment Receipt Form Customer Number: Customer Name: Report Number:23-270-0005 CES Group 00012 Shipping Method Shipping container/cooler uncompromised? Thermometer ID:IRT15 4.7C Chain of Custody (COC) present?Yes No Yes No Not Present Yes No Not Present Yes No COC agrees with sample label(s)? Yes No COC properly completed Samples in proper containers? Sample containers intact? Sufficient sample volume for indicated test(s)? All samples received within holding time? Cooler temperature in compliance? Yes No Yes No Yes No Yes No Yes No Yes NoCooler/Samples arrived at the laboratory on ice. Samples were considered acceptable as cooling process had begun. Yes No Yes No N/A Yes No N/A Yes No N/ASoil VOA method 5035 – compliance criteria met Water - Sample containers properly preserved Water - VOA vials free of headspace Yes No N/A Trip Blanks received with VOAs Low concentration EnCore samplers (48 hr) High concentration pre-weighed (methanol -14 d) Low conc pre-weighed vials (Sod Bis -14 d) High concentration container (48 hr) Custody seals intact on shipping container/cooler? Custody seals intact on sample bottles? Number of coolers/boxes received Yes No 1 Signature:Angelo Norvell Date & Time:09/27/2023 12:51:53 Special precautions or instructions included? Comments: Page 80 of 82 Page 81 of 82 Page 82 of 82