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HomeMy WebLinkAboutRA-2173_13145_CA_MRP_20231115 ENVIRONMENTAL | CIVIL | GEOTECHNICAL MONITORING REPORT TACKETT RESIDENCE 13117 US HIGHWAY 501 ROUGEMONT, DURHAM COUNTY, NC NCDEQ INCIDENT NO. 13145 RISK CLASSIFICATION: HIGH NOVEMBER 15, 2023 NCDEQ CONTRACT NO. N70522-A TASK AUTHORIZATION NO. 01 CATLIN PROJECT NO. 221052 PREPARED FOR: MR. MARK PETERMANN NCDEQ, DWM, UST SECTION 1646 MAIL SERVICE CENTER RALEIGH, NC 27699-1646 PREPARED BY: CATLIN ENGINEERS AND SCIENTISTS 220 OLD DAIRY ROAD WILMINGTON, NC 28405 (910) 452-5861 CORPORATE LICENSURE NO. FOR ENGINEERING SERVICES C-0585 CORPORATE LICENSURE NO. FOR GEOLOGY SERVICES C-118 NCDEQ; 13145_Tackett Residence.doc CATLIN Engineers and Scientists CATLIN Project No. 221052 November 2023 TABLE OF CONTENTS PAGE 1.0 SITE INFORMATION 1 2.0 EXECUTIVE SUMMARY 2 3.0 SCOPE OF SERVICES 2 4.0 SITE HISTORY AND CHARACTERIZATION 3 4.1 UST OWNER AND OPERATOR INFORMATION 3 4.2 UST INFORMATION 3 4.3 CONTAMINANT SOURCE INVENTORY 4 4.4 SITE CHARACTERISTICS 4 4.5 OWNERS AND OCCUPANTS OF ADJOINING/NEARBY PROPERTIES AND LAND USE 4 4.6 RECEPTOR INFORMATION 4 4.7 PREVIOUS INVESTIGATIONS AND REMEDIAL ACTIVITIES 5 5.0 REGIONAL AND SITE GEOLOGY AND HYDROGEOLOGY 7 5.1 SOIL AND BEDROCK 7 5.2 HYDROGEOLOGY 7 6.0 SITE ASSESSMENT INFORMATION 7 6.1 GROUNDWATER GAUGING DATA 7 6.2 GROUNDWATER SAMPLING DATA 8 6.3 SUMMARY OF GROUNDWATER INFORMATION 9 6.4 EVALUATION OF ASSESSMENT INFORMATION 10 7.0 CONCLUSIONS AND RECOMMENDATIONS 10 8.0 LIMITATIONS 11 9.0 STATEMENTS AND CERTIFICATION 11 10.0 REFERENCES 12 NCDEQ; 13145_Tackett Residence.doc CATLIN Engineers and Scientists CATLIN Project No. 221052 November 2023 TABLES TABLE 1 SITE HISTORY – UST SYSTEM AND OTHER RELEASE INFORMATION TABLE 2 PUBLIC AND PRIVATE WATER SUPPLY WELLS AND OTHER RECEPTOR INFORMATION TABLE 3 WELL CONSTRUCTION AND HISTORICAL WATER LEVEL GAUGING DATA TABLE 4 SUMMARY OF GROUNDWATER LABORATORY RESULTS – STANDARD METHOD 6200B TABLE 5 SUMMARY OF HISTORICAL GROUNDWATER LABORATORY RESULTS – STANDARD METHOD 6200B TABLE 6 SUMMARY OF HISTORICAL GROUNDWATER LABORATORY RESULTS – EPA METHOD 625 TABLE 7 SUMMARY OF HISTORICAL GROUNDWATER LABORATORY RESULTS – MADEP EPH AND VPH ANALYTICAL FRACTIONS FIGURES FIGURE 1 SITE VICINITY MAP FIGURE 2 POTENTIAL RECEPTOR MAP FIGURE 3 SITE MAP FIGURE 4 GROUNDWATER ELEVATION – SEPTEMBER 27, 2023 FIGURE 5 MONITORING WELL GROUNDWATER SAMPLE ANALYTICAL RESULTS – SEPTEMBER 27, 2023 FIGURE 6 ESTIMATED HORIZONTAL EXTENT OF BENZENE – SEPTEMBER 27, 2023 APPENDICES APPENDIX A HISTORICAL DATA APPENDIX B SITE PHOTOGRAPHS APPENDIX C DAILY ACTIVITIES LOG AND FIELD DATA SHEETS APPENDIX D LABORATORY ANALYTICAL REPORT AND CHAIN OF CUSTODY DOCUMENT NCDEQ; 13145_Tackett Residence.doc CATLIN Engineers and Scientists CATLIN Project No. 221052 1 November 2023 1.0 SITE INFORMATION Site Identification Date: 11/15/23 Site Risk/Priority Rank: High UST Number: RA-2173 Incident Number: 13145 Site Name: Tackett Residence Facility ID: Unknown Site Location: 13117 US Highway 501 Nearest City/Town: Rougemont County: Durham Description of Geographical Data Point: Former UST basin Location Method: Google Earth Latitude (decimal degrees): 36.221213° Longitude (decimal degrees): -78.927222° Contacts Information UST Owner: Mr. Wilkenson (Deceased) Address: N/A Phone: N/A UST Operator: Mr. Wilkenson (Deceased) Address: N/A Phone: N/A Property Owner: Miguel Antonio Lopez-Martinez Address: 101 Jordan Trail, Rougemont, NC Phone: Unknown Property Occupant: Unknown Address: 13117 N. Roxboro Rd., Rougemont, NC Phone: Unknown Consultant: CATLIN Engineers and Scientists Address: 220 Old Dairy Rd., Wilmington, NC 28405 Phone: (910) 452-5861 Corporate Licensure No. For Engineering Services: C-0585 Corporate Geology License No.: C-118 Analytical Laboratory: Con-Test Analytical Laboratory State Certification: NC 652, NC-DW 25703 Address: 39 Spruce St., E. Longmeadow, MA 01028 Phone: (413) 525-2332 Release Information Date Discovered: August 1994 Estimated Quantity of Release: Unknown Cause of Release: Leak in the UST system Source of Release: UST system or associated fitting(s) Sizes and contents of UST system(s) from which the release occurred: • One 550-gallon gasoline UST NCDEQ; 13145_Tackett Residence CATLIN Engineers and Scientists CATLIN Project No. 221052 2 November 2023 2.0 EXECUTIVE SUMMARY The Tackett Residence site is located at 13117 US Highway 501 (aka North Roxboro Road), Rougemont, Durham County, North Carolina. One 550-gallon gasoline underground storage tank (UST) was previously operated on the adjacent property located at 13121 North Roxboro Road and was removed in 1996. A petroleum release was discovered in 1994 during groundwater investigation activities in the site vicinity. The purpose of this report is to document the latest groundwater monitoring event at the site. On September 27, 2023, CATLIN Engineers and Scientists (CATLIN) personnel arrived on site to gauge and collect groundwater samples from monitoring wells MW-01, MW-02, and MW-03. Groundwater was measured at approximately 5.8 feet deep across the site. Based on these gauging results, the groundwater flow direction was calculated to be towards the southwest. Groundwater samples were collected from the three monitoring wells and were submitted for volatile organic compound (VOC) analysis via Standard Method (SM) 6200B plus ethylene dibromide (EDB), methyl tert-butyl ether (MTBE), and diisopropyl ether (DIPE). Laboratory results did not indicate any dissolved petroleum constituents above their respective laboratory method detection limits (MDLs) in the groundwater sample from MW-03. Multiple VOCs were detected in the MW-01 and MW-02 samples at concentrations greater than those established in Title 15A of the North Carolina Administrative Code, Subchapter 2L, Section .0202 Groundwater Quality Standards (2L GWQS), but below the Gross Contaminant Levels (GCL). Benzene, toluene, ethylbenzene, and total xylenes (BTEX) compound concentrations have increased in the groundwater sample from monitoring well MW-01 and decreased in the sample from MW-02 since November 2022 (CATLIN, 2022B). CATLIN recommends attempting to gain access to sample WSW-9 and discussing connecting that parcel to municipal water with the property owner. 3.0 SCOPE OF SERVICES The scope of services for this report was performed in general accordance with CATLIN proposal number 221052.01P, dated September 12, 2023. Services were authorized by the North Carolina Department of Environmental Quality’s (NCDEQ’s) Task Authorization (TA) #01, accepted on September 14, 2023, and Contract Number N70522-A. The approved scope of services for this Task Authorization included the following tasks: • Attempt to obtain Right-of-Access agreements to abandon water supply wells WSW-8, WSW-10, WSW-14, and WSW-15; • Gauge and sample three permanent groundwater monitoring wells (MW-01, MW-02, and MW-03); NCDEQ; 13145_Tackett Residence CATLIN Engineers and Scientists CATLIN Project No. 221052 3 November 2023 • Analyze five water samples (three groundwater wells, one field blank, and one trip blank) per SM 6200B (including EDB, MTBE, and DIPE); and • Prepare and submit a monitoring report documenting the findings. Letters were sent to the water supply well property owners to request their permission to abandon the noted supply wells. As of the date of this submittal, no responses have been received. The scope of services was conducted in general accordance with the approved TA. 4.0 SITE HISTORY AND CHARACTERIZATION The Tackett Residence site is located at 13117 US Highway, Rougemont, Durham County, North Carolina (Figures 1 and 2). The former Robinson Store was located at 13121 North Roxboro Road (adjacent to the Tackett Residence). Summarized available historical sampling data collected by others is provided in Appendix A. Site photographs are presented in Appendix B. 4.1 UST OWNER AND OPERATOR INFORMATION The Robinson Store served as a gas station and was located adjacent to the Tackett Residence. The last known operator of the UST at the Robinson Store was identified as Mr. Wilkinson, who is deceased. Reported dates of operation vary. The Pollution Incident/UST Leak Reporting Form submitted in 1994 says that the UST operated from approximately 1948 to the mid-1950s. Other reports suggest the store could have been operating until the early 1960s (ATEC, 1996; NCDENR, 2010). The site was accepted into the North Carolina UST Section Trust Fund Branch State Lead Program in 1995 (NCDENR, 2010). Available information regarding UST owners and operators is presented in Table 1. 4.2 UST INFORMATION Reportedly, one 550-gallon gasoline UST was previously operated at the Robinson Store. It’s estimated that the tank was installed circa 1948 and operated until the mid-1950s or early 1960s. The tank was removed from the site in May 1996 (ATEC, 1996). Available UST system information is presented in Table 1 and the approximate former UST basin location is illustrated on Figure 3. NCDEQ; 13145_Tackett Residence CATLIN Engineers and Scientists CATLIN Project No. 221052 4 November 2023 4.3 CONTAMINANT SOURCE INVENTORY A release was discovered at the Tackett Residence during groundwater investigation activities in the site vicinity that began in August 1994. In October 1996, benzene was detected in the Tackett water supply well above its 2L GWQS (NCDENR, 1998). During tank closure activities at the Robinson Store, soil sample analytical results revealed total petroleum hydrocarbons (TPH) gasoline range organics (GRO) above State Action Levels (ATEC, 1996). 4.4 SITE CHARACTERISTICS The Tackett Residence property is owned by Miguel Antonio Lopez-Martinez and is a rental property occupied by an unknown resident. The parcel is comprised of the residence building and grassy areas with scattered trees. The former Robinson Store parcel is owned by Ms. Helen Bowen and is a private residence. The parcel contains a house, a shed in the back, and the former Robinson Store. Site photographs are presented in Appendix B. 4.5 OWNERS AND OCCUPANTS OF ADJOINING/NEARBY PROPERTIES AND LAND USE Properties in the site vicinity are mostly residences and forested land. The site is bound by North Roxboro Road (US Highway 501) to the east. Residences adjoin the property to the north and south, and a large pond is located to the west. As mentioned above, the former Robinson Store is located on the parcel to the north adjacent to the Tackett Residence parcel. 4.6 RECEPTOR INFORMATION Conducting a receptor survey was outside the scope of this monitoring event. CATLIN conducted the most recent receptor survey for the Tackett Residence site in 2021. Pertinent receptor information is summarized below. Potential receptors are illustrated on Figure 2 and receptor information obtained from CATLIN (2021) is shown in Table 2. Based on correspondence with the Durham County Utilities Division, the Rougemont Water System is supplied by two community wells located at 12403 North Roxboro Road. Forty-six water supply wells have been identified within 1,500 feet of the site. Within 250 feet of the site, three active non- potable wells were identified. Ten active potable wells are located within 1,000 feet from the site. The remaining wells were identified as non-potable. Three surface water bodies are located within 1,500 feet of the site. One large pond is located 316 feet to the west of the site. The two other ponds are located between 1,000 and 1,5000 feet from the site. NCDEQ; 13145_Tackett Residence CATLIN Engineers and Scientists CATLIN Project No. 221052 5 November 2023 4.7 PREVIOUS INVESTIGATIONS AND REMEDIAL ACTIVITIES Investigation activities for the Tackett Residence site were often reported in conjunction with two other nearby incidents: Rougemont Foodmart #8 (Incident #6280) and the Former Annie Bowling Property (Incident #17956). All are in the vicinity of the intersection of North Roxboro Road and Bacon Road, and all have potentially contributed to the reported groundwater contamination. As discussed previously, the release was discovered in August 1994 during water supply well sampling activities by the Durham County Health Department (NCDENR, 2010). The water supply well on the Tackett Residence parcel was impacted with benzene concentrations above applicable standards. During the sampling of the well, a UST riser vent was detected in front of the former Robinson Store building on the parcel north of the Tackett Residence parcel. The tank was removed in May 1996. Approximately 14 tons of soil were removed during tank closure activities. Confirmation soil samples from the bottom of the UST excavation pit reportedly contained TPH GRO concentrations up to 2,000 parts per million (ppm) (ATEC, 1996). A monitoring well was installed on the Tackett Residence in 1997 and groundwater sampling results confirmed petroleum contamination on the property. In May 1997, the Tackett Residence water supply well was abandoned, and a new water supply well was installed to a depth of approximately 302 feet. Because another water supply well in the vicinity (Harris Residence) was also impacted by petroleum contamination, a water supply line was installed from the Tackett Residence water supply well to the Harris Residence. Point of entry (POE) water treatment systems were installed at several water supply wells in the area including both the Tackett Residence and the adjacent parcel with the former Robinson store (NCDENR, 2010). Several of the POE systems were removed in 2014. No official action plan was published specifically for the Tackett Residence release. However, a Leaking UST (LUST) action plan was prepared for the nearby Former Annie Bowling Property (#17956) site in 2008 and an incident summary for the three connected sites from 2010 included recommendations for actions going forward. These reports agreed that, due to the multiple sources and widespread contamination in the area, that the primary actions going forward would be continuing private water supply well sampling, maintaining the existing POE filtration systems, and discussing the possibility for waterline installation with the Durham County Planning Department (NCDENR, 2008b; NCDENR, 2010). Multiple water supply well monitoring events have been conducted by various parties between 1997 and 2008. Through 2004 and 2005, Withers & Ravenel (W&R) reported that water supply wells WSW-3, WSW-4, WSW-7, WSW-12, WSW-18, WSW-19, WSW-27, and WSW-28 contained contaminant NCDEQ; 13145_Tackett Residence CATLIN Engineers and Scientists CATLIN Project No. 221052 6 November 2023 concentrations above 2L GWQS (NCDENR, 2008a; W&R, 2004). Health Risk Evaluations (HREs) were also continually performed, and their results reported to the property owners (NCDENR, 2008b). CATLIN conducted a sampling event in April 2022. Three Type II monitoring wells (MW-01, MW-02, and MW-03) were installed and a soil sample was collected from each boring at approximately six to eight BLS. Analyses of the soil samples from MW-01 and MW-02 revealed multiple contaminants above their Soil-to-Groundwater (STGW) Maximum Soil Contaminant Concentrations (MSCC). Several VOCs, semi-VOCs, and petroleum hydrocarbon compounds were reported above their 2L GWQS in the MW-01 and MW-02 groundwater samples. No targeted analytes were above GCL. It should be noted that the 0-hour depth to water following monitoring well installation was approximately 18 feet below land surface (BLS); however, the depth to water during the groundwater sampling event was roughly four feet BLS. Therefore, the soil samples collected between six and eight feet BLS may not be indicative of vadose zone soil conditions (CATLIN, 2022A). On November 1, 2022, CATLIN personnel advanced two soil borings for the construction of Type I temporary monitoring wells (TMW-04 and TMW-05) to 15 feet BLS. After gauging and sampling, these wells were abandoned. On November 8, 2022, CATLIN returned to the site to gauge and collect groundwater samples from monitoring wells MW-01, MW-02, and MW-03. The samples were submitted for VOC analysis via SM 6200B plus EDB, MTBE, and DIPE. Laboratory results did not indicate any dissolved petroleum constituents above their respective laboratory reporting limits in the groundwater samples from MW-03 or TMW-05. Multiple VOCs were detected in the MW-01 and MW-02 samples at concentrations greater than those established in the 2L GWQS, but below the GCLs (CATLIN, 2022B). In November 2022, CATLIN conducted slug tests at monitoring wells MW-01 and MW-02. Slug test analyses resulted in hydraulic conductivities of 0.00001273 centimeter per second (cm/sec) and 0.000008583 cm/sec in wells MW-01 and MW-02, respectively. The hydraulic conductivities were utilized to perform predictive modeling to help determine potential impacts of the benzene and naphthalene from MW-02. Modeling results indicated the non-compliant benzene and naphthalene plumes should not migrate beyond approximately 30 feet and 8 feet, respectively. The closest receptor (water supply well WSW-9) is located 73 feet cross-gradient. Therefore, the model predicts dissolved contamination from MW-02 should not impact WSW-9. (CATLIN, 2022B). A detailed site history prepared by NCDENR and summarized available historical sampling data from previous consultants are provided in Appendix A. NCDEQ; 13145_Tackett Residence CATLIN Engineers and Scientists CATLIN Project No. 221052 7 November 2023 5.0 REGIONAL AND SITE GEOLOGY AND HYDROGEOLOGY 5.1 SOIL AND BEDROCK As defined in the Geologic Map of North Carolina, published by the North Carolina Department of Natural Resources and Community Development (1985), the site lies within the Piedmont physiographic province. The site is underlain by the felsic metavolcanic rock formation within the Carolina Slate Belt. According to the 1985 Geologic Map of North Carolina, metamorphosed dacitic to rhyolitic flows, metavolcanic rock, and metamudstone out crop in the site area. Boring logs from 2021 monitoring well installations indicate that red and yellow silt is present to approximately 10 feet BLS. Orange silt with black streaks was encountered from approximately 10 to 12 feet BLS. Sand was observed from 15 to 20 feet BLS (CATLIN, 2021). From the boring logs of temporary monitoring wells TMW-04 and TMW-05, a layer of brown to orange clayey topsoil directly underlies the site to between 0.2 and 0.5 feet BLS. Orange clay, grading to green or tan, is present to 12 feet BLS. Tan to green silt or clayey silt was observed from 12 to 15 feet BLS. 5.2 HYDROGEOLOGY Groundwater - The 2020 Visual Hydrogeologic Framework (VHF) – North Carolina Hydrogeological Database did not identify sufficient boreholes near the site to draw a cross-section. Surface Water – Three surface water bodies (ponds) were identified within 1,500 feet of the site. The ponds appear to be for mostly agricultural use. 6.0 SITE ASSESSMENT INFORMATION CATLIN conducted field activities in general accordance with the approved TA and pre-prepared, site-specific Health and Safety Plan (HASP). Upon arrival at the site, potential hazards were evaluated before beginning field work and the safety meetings are documented on the Daily Activities Log. The Daily Activities Log is included in Appendix C. Photographs from the site visit are included in Appendix B. 6.1 GROUNDWATER GAUGING DATA During the September 2023 event, CATLIN personnel measured depth to water in the monitoring wells using an electronic water interface probe. To prevent cross contamination, the probe and cabling were decontaminated according to manufacturer’s recommendations between use in each well. Gauging data were recorded on an electronic groundwater sampling form NCDEQ; 13145_Tackett Residence CATLIN Engineers and Scientists CATLIN Project No. 221052 8 November 2023 using a tablet device. Gauging procedures were performed in general accordance with North Carolina Department of Environmental and Natural Resources (NCDENR) and NCDEQ Guidelines, and EPA Region 4 Operating Procedures. On September 27, 2023, monitoring wells MW-01, MW-02, and MW-03 were gauged and depth to water ranged from 5.04 feet below top of casing (BTOC) (MW-01) to 6.47 feet BTOC (MW-02). Light non-aqueous phase liquid (LNAPL) was not encountered during this monitoring event. Based on groundwater elevations calculated for this gauging event, groundwater flow direction is towards the southwest. During the April 2022 event, the groundwater flow direction was calculated to be toward the north. During the November 2022 sampling event, the groundwater flow direction was calculated to be toward the southwest. Due to this significant change, CATLIN remobilized to the site in December 2022 to collect additional gauging data. Based on this gauging event, groundwater was illustrated toward the east. Monitoring well gauging results for events conducted by CATLIN are presented in Table 3. Groundwater elevations are illustrated on Figure 4. The field data sheets are provided in Appendix C. 6.2 GROUNDWATER SAMPLING DATA Following gauging, the monitoring wells were sampled in general accordance with NCDENR and NCDEQ Guidelines, and EPA Region 4 Operating Procedures. On September 27, 2023, prior to obtaining representative groundwater samples from MW-01, MW-02, and MW-03, each monitoring well was purged by removing a minimum of three well volumes using a new, disposable bailer. Monitoring well groundwater field parameter data were measured at one- minute intervals using an In-Situ Aqua TROLL 600 Multiparameter Sonde (Aqua TROLL). Conductivity, pH, oxidation reduction potential (ORP), dissolved oxygen, and temperature measurements were recorded utilizing the VuSitu mobile application (version 1.17.12). Groundwater parameter data were transferred from the VuSitu mobile application to the electronic groundwater sampling forms. Copies of these field data sheets are available in Appendix C. All groundwater samples were collected from the bailers and poured into appropriate, laboratory-provided, pre-preserved glassware, labeled, and placed on ice in an insulated cooler. A field blank was collected by pouring water from a new, sealed gallon of distilled water directly into laboratory-provided, pre-preserved glassware. The glassware was labeled and placed on ice in an insulated cooler. A laboratory- NCDEQ; 13145_Tackett Residence CATLIN Engineers and Scientists CATLIN Project No. 221052 9 November 2023 provided trip blank was maintained in the cooler for the duration of the sampling event. The groundwater samples, field blank, and trip blank were submitted to Con- Test Analytical Laboratory (Certification NC 652 and NC-DW 25703) in East Longmeadow, Massachusetts, under proper chain of custody (COC) protocol and analyzed per SM 6200B (including EDB, MTBE, and DIPE). The laboratory analytical data and COC are included in Appendix D. 6.3 SUMMARY OF GROUNDWATER INFORMATION Historically, benzene has been above 2L GWQS in the sampled water supply wells in the site vicinity. A detailed site history prepared by NCDENR and summarized available historical sampling data are provided in Appendix A. The latest groundwater sampling laboratory results for SM 6200B analysis are summarized in Table 4. Historical results for events conducted by CATLIN are included in Tables 5 through 7. Monitoring well sample analytical results are illustrated on Figure 5. A copy of the complete laboratory report and COC documentation are in Appendix D. Monitoring Wells During the September 2023 monitoring event, three monitoring well groundwater samples (MW-01, MW-02, and MW-03) were collected and submitted for analysis via SM 6200B (including EDB, MTBE, and DIPE). Laboratory analysis did not detect any dissolved petroleum constituents above their respective MDLs in the sample from MW-03. No analyte concentrations were detected above GCL in any of the monitoring well samples. Analytical results reported the following constituents at concentrations above their 2L GWQS in samples: • MW-01: benzene, 1,2-dichloroethane, 1,2-dichloropropane, DIPE, and naphthalene; and • MW-02: benzene and naphthalene. Field Blank and Trip Blank For the September 2023 samples, analysis of the field blank revealed an estimated concentration (“J”-value) of acetone, which is a known laboratory artifact. No additional target analytes were detected. Laboratory analysis of the trip blank did not detect the presence of any target analytes. NCDEQ; 13145_Tackett Residence CATLIN Engineers and Scientists CATLIN Project No. 221052 10 November 2023 6.4 EVALUATION OF ASSESSMENT INFORMATION Extent of Contamination Several petroleum constituents were detected above their respective 2L GWQS in the groundwater samples from MW-01 and MW-02. However, no constituents were reported above GCL. A summary of monitoring well groundwater sample analytical results is shown on Figure 5. The estimated horizontal extent of benzene is shown on Figure 6. The dissolved-phase contaminant groundwater plume is horizontally delineated to the west and southwest, but not to the north or east. The plume is not vertically delineated. Cleanup Levels Achieved Soil – Approximately 14 tons of soil were removed during UST excavation activities (ATEC, 1996). Soil samples obtained in April 2022 indicate that contaminant concentrations are above STGW MSCCs, but below Residential MSCCs (CATLIN, 2022). Groundwater – Groundwater contaminant concentrations are above 2L GWQS, but below GCL at the site. LNAPL – LNAPL was not measured during this monitoring period. LNAPL has not been historically observed at the site. 7.0 CONCLUSIONS AND RECOMMENDATIONS Conclusions Groundwater monitoring findings for this period are summarized below: • Three groundwater samples were collected from the monitoring wells (MW-01, MW-02, and MW-03) and submitted for analysis for VOCs per SM 6200B plus DIPE, EDB, and MTBE. • Several contaminants were reported in the MW-01 and MW-02 samples at concentrations above their 2L GWQS. • No dissolved petroleum constituents were above their respective laboratory MDLs in the sample from MW-03. • BTEX concentrations have increased in MW-01 but decreased in MW-02 since the prior sampling event in November 2022. • Groundwater flow direction was calculated to be towards the southwest. • The horizontal extent of groundwater impacts is not defined to the west or southwest. The vertical extend of groundwater impact is also not defined. NCDEQ; 13145_Tackett Residence CATLIN Engineers and Scientists CATLIN Project No. 221052 11 November 2023 Recommendations CATLIN recommends attempting to gain access to sample WSW-9 and discussing connecting that parcel to municipal water with the property owner. 8.0 LIMITATIONS The groundwater samples analyzed as part of this investigation only provide isolated data points and may not represent conditions at every location in the project area. Analyses and conclusions of this report, being based on interpolation between data points at the project area, may not be completely representative of all site conditions. Conclusions and recommendations of this investigation and report are based on the best available data in an effort to comply with current regulatory requirements. 9.0 STATEMENTS AND CERTIFICATION 1 Enter the date the monitoring report was due. November 15, 2023 Will this report be submitted after the established due date? NO 2 Was any required information from the above template missing from this report? YES No cross sections are provided. Adequate subsurface information is not available. 3 If applicable, will any of the proposed attenuation milestones under the schedule approved in the Corrective Action Plan not be met? NA No CAP has been submitted for this site. 4 Does any known or suspected source zone soil contamination or free product remain outside of the assessed area that could be inhibiting natural attenuation? NO 5 Has there been an unexpected increase in contaminant mass sufficient to suggest a potential new release from a separate onsite or offsite source? NO 6 Certification: I, Sean J. O’Neil, a Licensed Engineer for CATLIN Engineers and Scientists, do certify that the information contained in this report is correct and accurate to the best of my knowledge. CATLIN Engineers and Scientists is licensed to practice engineering in North Carolina. The certification number of the company or corporation is C-0585. NCDEQ; 13145_Tackett Residence.doc CATLIN Engineers and Scientists CATLIN Project No. 221052 12 November 2023 10.0 REFERENCES ATEC Associates, Inc., Underground Storage Tank Closure Report, Tackett Residence, 13117 Roxboro Road, Rougemont, North Carolina, NCDEM #13145-3, ATEC Project No. 35-07-95-00016, July 1996. CATLIN Engineers and Scientists, Receptor Survey Letter Report, Tackett Residence, 13117 N. Roxboro Street, Rougemont, North Carolina, Incident Number: 13145, Risk Classification: High, CATLIN Project No. 221052.P, August 30, 2021. CATLIN Engineers and Scientists, Monitoring Report, Tackett Residence, 13117 North Roxboro Road, Rougemont, Durham County, North Carolina, NCDEQ Incident No. 13145, Risk Classification: High, May 27, 2022A. CATLIN Engineers and Scientists, Monitoring Report, Tackett Residence, 13117 North Roxboro Road, Rougemont, Durham County, North Carolina, NCDEQ Incident No. 13145, Risk Classification: High, December 22, 2022B. Mid-Atlantic Associates, P.A., Letter Report of Environmental Services, Tackett Water-Supply Well and Water Distribution System Installation, Rougemont, Durham County, North Carolina, DEM Incident No. 13145, Mid-Atlantic Associates Job No. SLT-96-420, September 12, 1997. NCDENR, Division of Environmental Management, Groundwater Section, Pollution Incident/U.S.T. Leak Reporting Form, Incident #13145, January 1994. NCDENR, UST Section, North Carolina Department of Environment and Natural Resources, Division of Waste Management, Guidelines for Sampling, December 1, 2013. NCDENR, UST Section, North Carolina Department of Environment and Natural Resources, Division of Waste Management, Federal Trust Fund Single Incident Report, August 19, 2008(a). NCDENR, UST Section, North Carolina Department of Environment and Natural Resources, Division of Waste Management, LUST Action Plan, Incident Name: Annie Bowling Property, Incident Number: STF #17956, Rougemont, Durham County, September 29, 2008(b). NCDENR, UST Section, North Carolina Department of Environment and Natural Resources, Division of Waste Management, Rougemont Area Incident, Incident Names: Rougemont Food Mart #8, Virginia Tackett, and Annie Bowling Properties, Incident Number: STF #’s 6280, 13145, and 17956, Rougemont, Durham County, April 22, 2010. NCDENR, UST Section, North Carolina Department of Environment and Natural Resources, Division of Waste Management, Tackett Residence #13145 Commercial Category-A, Durham County, RRO, 1998. NCDEQ, UST Section, North Carolina Department of Environmental Quality, Division of Waste Management, Corrective Action Guidelines, January 19, 2021. NCDEQ; 13145_Tackett Residence.doc CATLIN Engineers and Scientists CATLIN Project No. 221052 13 November 2023 NCDEQ, UST Section, North Carolina Department of Environmental Quality, Division of Waste Management, Guidelines for Site Checks, Tank Closure, and Initial Response and Abatement, January 19, 2021. North Carolina Department of Natural Resources and Community Development, Geological Map of North Carolina, 1985. U.S. EPA, Region 4, U.S. Environmental Protection Agency, Science and Ecosystem Support Division, Athens Georgia, Guidance – Design and Installation of Monitoring Wells, Striggow, B., US. EPA Report No. SESGUID- 101-R0, Effective Date February 18, 2008. U.S. EPA, Region 4, U.S. Environmental Protection Agency, Science and Ecosystem Support Division, Athens Georgia, Operating Procedure – Field Equipment Cleaning and Decontamination at the FEC, Striggow, B., U.S. EPA Report No. SESDPROC-206-R3, Effective Date December 18, 2015. U.S. Environmental Protection Agency, Science and Ecosystem Support Division, Athens Georgia, Operating Procedure – Groundwater Level and Well Depth Measurement, Striggow, B., U.S. EPA Report No. SESDPROC-105-R3, Effective Date November 3, 2016. U.S. EPA, Region 4, U.S. Environmental Protection Agency, Science and Ecosystem Support Division, Athens Georgia, Operating Procedure – Groundwater Sampling, Striggow, B., U.S. EPA Report No. SESDPROC-301-R4, Effective Date April 26, 2017. U.S. EPA, Region 4, U.S. Environmental Protection Agency, Science and Ecosystem Support Division, Athens Georgia, Operating Procedure – In Situ Water Quality Monitoring, Chief, Field Services Branch, U.S. EPA Report No. SESDPROC-111-R4, Effective Date March 14, 2018. Withers & Ravenel, Monitoring Report – April 2004, Rougemont Food Mart #8, Incident #6280, W&R #202248.0, Tackett Residence, Incident #13145, W&R #202241.0, Bowling Property, Incident #17956, W&R #202246.0, W&R Contract Number N03001S, May 21, 2004. NCDEQ; 13145_Tackett Residence.doc CATLIN Engineers and Scientists CATLIN Project No. 221052 November 2023 TABLES Page 1 of 1 TABLE 1 SITE HISTORY — UST SYSTEM AND OTHER RELEASE INFORMATION Incident Name and No.: Tackett Residence - 13145 UST ID Number Name of Owner/ Operator Last Contents Previous Contents Capacity (gal) Construction Details Tank Dimensions (feet) Installation Date (year) Date Removed (mm/dd/yy) 1 Mr. Wilkenson (deceased)Gasoline Gasoline 550 Steel 3 x 8 ~1948 05/01/96 Incident Number Material Released Date of Release Discovery 13145 Gasoline August 1994 Information obtained from ATEC (1996) and misc. NCDENR documents.~ = Approximate gal = gallons Description of the Release The health department sampled the on-site water supply well in August 1994 and laboratory results revealed benzene above its 2L GWQS (11.1 µg/L). ~1948 to mid 1950s or early 1960s Dates of Ownership/ Operation NCDEQ; 13145_Tackett Residence.xlsx; T1_Site History CATLIN Project No. 221052 CATLIN Engineers and Scientists November 2023 Page 1 of 1 TABLE 2 Incident Name and No.: Tackett Residence - 13145 Well ID Property Address Durham County PIN Number Owner Name (Last, First Middle) Owner Mailing Address Well Use Connected to County Water Supply? Distance/ Direction from Source Area (ft.) Comment WSW-2 13017 N. Roxboro Rd 0829-01-18- 4731 Lawton LLC 105 Lawson Farm Rd, Roxboro, NC Non- Potable Yes 765 / SE The house is vacant. WSW-3 13023 N. Roxboro Rd 0829-01-18- 3836 Holland, Kenneth and Shirley 13023 N. Roxboro Rd, Rougemont, NC Non- Potable Yes 582 / SE Water meter and well observed. Well is only used for irrigation. WSW-4 13107 N. Roxboro Rd 0829-01-18- 2997 Carroll, Diane C 13115 N. Roxboro Rd, Rougemont, NC Non- Potable Yes 390 / SE Resident said he does not use the well. WSW-5 13109 N. Roxboro Rd 0829-01-19- 2170 Cooli LLC 610 Ridge Rd, Roxboro, NC Non- Potable Yes 236 / S WSW-5 and WSW-7 appear to be the same well which is actually in WSW-5 location. Site appears vacant. WSW-8 13115 N. Roxboro Rd 0829-01-19-2223 Clarke, Angela W and Thomas D 6519 Cheek Rd, Durham, NC Non-Potable Yes 245 / WSW Water meter observed. No power to well. Well depth 180 ft., casing to 40 ft. 6-inch diameter. WSW-9 13117 N. Roxboro Rd 0829-01-19- 1386 Martinez, Miguel A L 101 Jordan Trail, Rougemont, NC Potable No 26 / S Meter and well pump control house observed. Assumed potable. WSW-10 13121 N. Roxboro Rd 0829-01-19- 1475 Bowen, Helen G 13121 N. Roxboro Rd, Rougemont, NC Non- Potable Yes 137 / NW Water meter observed in yard. No power to well. WSW-11 13201 N. Roxboro Rd 0829-01-19- 1577 Bowen, Norma J 13201 N. Roxboro Rd, Rougemont, NC Non- Potable Yes 267 / NNW Water meter observed in yard. PUBLIC AND PRIVATE WATER SUPPLY WELLS AND OTHER RECEPTOR INFORMATION NCDEQ; 13145_Tackett Residence.xlsx; T2_Receptor Info CATLIN Project No. 221052 CATLIN Engineers and Scientists November 2023 Page 1 of 1 TABLE 2 Incident Name and No.: Tackett Residence - 13145 PUBLIC AND PRIVATE WATER SUPPLY WELLS AND OTHER RECEPTOR INFORMATION Well ID Property Address Durham County PIN Number Owner Name (Last, First MI) Owner Mailing Address Well Use Connected to County Water Supply? Distance/ Direction from Source Area (ft.) Comment WSW-12 13207 N. Roxboro Rd 0829-01-09- 7840 Locklear, Jason and Linda P.O. Box 141, Rougemont, NC Non- Potable Yes 533 / NW Meter and well in yard. Well appears to be in use, potentially for irrigation. WSW-13A 13202 N. Roxboro Rd 0829-01-19-4797 Hunt, Arthur and Linda 13202 N. Roxboro Rd, Rougemont, NC Non-Potable Yes 490 / NW Meter observed in the yard. WSW-14 13122 N. Roxboro Rd 0829-01-19- 4586 Dunn, Carrie N 13122 N. Roxboro Rd, Rougemont, NC Non- Potable Yes 281 / ENE Meter observed in the yard. Owner called and said she has never used well. WSW-15 13116 N. Roxboro Rd 0829-01-19- 5432 James Place LLC 10308 Rougemont Rd, Bahama, NC Non- Potable Yes 232 / E Well and water meter observed. Well not used per resident. WSW-16 13112 N. Roxboro Rd 0829-01-19- 6340 Wilkins, Leonard and Viola 13104 HWY 501, Rougemont, NC Potable No 354 / E Meter and well were observed. Assumed potable. WSW-18 13100 N. Roxboro Rd 0829-01-18- 7957 McKellar, Irma and Maurice 168 Adams Farm Rd, Roxboro, NC Non- Potable No 655 / SE Well was destroyed. Per neighbor the well is open and kids throw things into it often. Meter also observed. WSW-19 13016 N. Roxboro Rd 0829-01-18- 8805 Painter, Cynthia O 13016 Roxboro Rd, Rougemont, NC Non- Potable Yes 857 / SE On public water and well has been closed per resident. WSW-21 12924 N. Roxboro Rd 0829-01-18-9230 Vinayak Yogi Rougemont LLC 12924 N. Roxboro Rd, Rougemont, NC Non-Potable Yes 1,366 / SE Well observed. Employee thought they were on public water. WSW-23 114 Red Mountain Rd 0829-01-28- 1382 Tilley, Janet V 114 Red Mountain Rd, Rougemont, NC Potable No 1,304 / SE Per resident, well water is used for bathing and washing clothes. Public water is used also mostly for cooking. NCDEQ; 13145_Tackett Residence.xlsx; T2_Receptor Info CATLIN Project No. 221052 CATLIN Engineers and Scientists November 2023 Page 1 of 1 TABLE 2 Incident Name and No.: Tackett Residence - 13145 PUBLIC AND PRIVATE WATER SUPPLY WELLS AND OTHER RECEPTOR INFORMATION Well ID Property Address Durham County PIN Number Owner Name (Last, First MI) Owner Mailing Address Well Use Connected to County Water Supply? Distance/ Direction from Source Area (ft.) Comment WSW-24 13011 N. Roxboro Rd 0829-01-18- 3594 Lawson, Mabel 908 Ruby St, Durham, NC Potable No 902 / SE House appeared vacant. Assumed potable. WSW-25 113 Bacon Rd / 108 Bill Poole Rd 0829-01-18- 5039 Chambers, Marion T 1111 Bacon Rd, Rougemont, NC Potable No 1,217 / S Well identified in previous reports. Unable to verify and assumed potable. WSW-26 13210 N. Roxboro Rd 0920-03-10- 2193 Blalock, David and Ethel 702 Hillsborough Rd, Timberlake, NC Non- Potable Yes 662 / NE Per employee, building is on public water. WSW-28 115 Red Mountain Rd 0829-01-29- 0057 Scaggs, Becky A 5016 Long Leaf Dr, Durham, NC Potable No 1,125 / SE Well observed. House appeared vacant. Assumed potable. WSW-29 206 Bacon Rd 0829-01-18- 0625 Ashley, Donald and Virginia 206 Bacon Rd, Rougemont, NC Potable No 782 / SSW Well and water meter observed. Assumed potable. WSW-30 209 Bacon Rd 0829-01-08- 8493 Chambers, Marion L 369 Historic Village Rd, Roxboro, NC Potable No 991 / SSW Meter and well observed, house seems vacant. Assumed potable. WSW-31 205 Bacon Rd 0829-01-18- 0335 Wester, Jessica L 205 Bacon Rd, Rougemont, NC Non- Potable Yes 1,039 / SW Well and meter observed. WSW-32 220 Bacon Rd 0829-01-08- 7811 Christie, Jeremy and Francis 220 Bacon Rd, Rougemont, NC Non- Potable Yes 720 / SW Well and meter observed. WSW-33 123 Bacon Rd 0829-01-18- 0262 Chambers, Marion L 125 Bacon Rd, Rougemont, NC Potable No 1,093 / S Potable well per resident. WSW-35 13109 N. Roxboro Rd 0829-01-19- 2170 Cooli LLC 610 Ridge Rd, Roxboro, NC Non- Potable Yes 332 / S Well on site. Site appears vacant. NCDEQ; 13145_Tackett Residence.xlsx; T2_Receptor Info CATLIN Project No. 221052 CATLIN Engineers and Scientists November 2023 Page 1 of 1 TABLE 2 Incident Name and No.: Tackett Residence - 13145 PUBLIC AND PRIVATE WATER SUPPLY WELLS AND OTHER RECEPTOR INFORMATION Well ID Property Address Durham County PIN Number Owner Name (Last, First MI) Owner Mailing Address Well Use Connected to County Water Supply? Distance/ Direction from Source Area (ft.) Comment WSW-36 215 Bacon Rd 0829-01-08- 7467 Davis, Harriet C 215 Bacon Rd, Rougemont, NC Potable No 1,029 / SW Water meter and well observed. Assumed potable. WSW-37 12911 N. Roxboro Rd 0829-01-18- 7008 BP Properties LLC 3003 Sharon Church Rd., Hillsborough, NC Non- Potable Yes 1,333 / SSE Employee was not certain but believed they were only on public water. WSW-38 13102 N. Roxboro Rd 0829-01-19- 7016 Torres, Norma P 13102 N. Roxboro Rd, Rougemont, NC Non- Potable Yes 531 / SE Water meter observed, no one home. Could not confirm presence of well. WSW-39 312 Bacon Rd 0829-01-09- 2466 Canada, Billy F 312 Bacon Rd, Rougemont, NC Potable No 1,061 / W Well observed. Public water does not extend to this property. WSW-44 119 Garden Path St 0829-01-19-8817 Beasley, Luther and Lonnie 1200 Leon St, Apt A1, Durham, NC Potable No 732 / NE According to resident at 120 Garden Path St, this well supplies her water. No building at 119 Garden Path. WSW-46 127 Garden Path St 0829-01-19- 9983 Beasley, Luther Sr. Heirs, C/O Williamson, Ronnie 127 Garden Path St, Rougemont, NC Potable No 978 / NE Well observed. No public water available on street. WSW-47 124 Garden Path St 0829-01-29- 0830 Parker, Darnell T 45 Blackgum Drive, Timberlake, NC Potable No 936 / ENE House on property has collaped. Uncertain if trailer is vacant or not, no one answered door. Unable to confirm presence of well but no public water access. Assumed potable. NCDEQ; 13145_Tackett Residence.xlsx; T2_Receptor Info CATLIN Project No. 221052 CATLIN Engineers and Scientists November 2023 Page 1 of 1 TABLE 2 Incident Name and No.: Tackett Residence - 13145 PUBLIC AND PRIVATE WATER SUPPLY WELLS AND OTHER RECEPTOR INFORMATION Well ID Property Address Durham County PIN Number Owner Name (Last, First MI) Owner Mailing Address Well Use Connected to County Water Supply? Distance/ Direction from Source Area (ft.) Comment WSW-51 13104 N. Roxboro Rd 0829-19-61- 9510 Wilkins, Leonard and Viola 13104 HWY 501, Rougemont, NC Potable No 392 / SE Meter and water supply well observed in yard. Per owner, well does not supply the residence. WSW-51A 13104 N. Roxboro Rd 0829-01-19- 6340 Wilkins, Leonard and Viola 13104 HWY 501, Rougemont, NC Potable No 354 / E Meter and well were observed. Per owner, well is potable and supplies the residence. WSW-54 209 Red Mountain Rd 0829-01-29- 5186 Pergerson, Leonard and Jacquelyn 209 Red Mountain Rd, Rougemont, NC Potable No 1,438 / SE Well observed and public water does not extend to this property. WSW-58 13208 N. Roxboro Rd 0829-01-19- 4917 Wilson, Diontra and Tilasha 13208 N. Roxboro St., Rougemont, NC Non- Potable Yes 708 / NE On public water per resident. Water meter and well observed. WSW-60 13009 Meadowridge Dr 0829-01-29- 6507 Dale, Kenneth Paul 13009 Meadowridge Dr, Rougemont, NC Potable No 1,450 / ENE Well observed and public water does not extend to this property. WSW-61 13013 Meadowridge Dr 0829-01-29- 5638 Whitlock Roger and Marty 13013 Meadowridge Dr, Rougemont, NC Potable No 1,417 / ENE Potable per resident. Public water does not extend to this property. WSW-62 13015 Meadowridge Dr 0829-01-29- 4891 Blanton, Danny and Betsy 13015 Meadowridge Dr, Rougemont, NC Potable No 1,431 / ENE Well observed and public water does not extend to this property. WSW-63 13017 Meadowridge Dr 0829-01-29- 4962 Sparks, Mary; Blackwell, William 13017 Meadowridge Dr, Rougemont, NC Potable No 1,395 / ENE Well observed and public water does not extend to this property. WSW-64 13101 Meadowridge Dr 0920-03-20- 5115 Aguilar, Carlos and Maria 13101 Meadowridge Dr, Rougemont, NC Potable No 1,410 / NE Well observed and public water does not extend to this property. WSW-65 13105 Meadowridge Dr 0920-03-20- 3265 Sanner, Michael and Diane 13105 Meadowridge Dr, Rougemont, NC Potable No 1,447 / NE Well observed and public water does not extend to this property. NCDEQ; 13145_Tackett Residence.xlsx; T2_Receptor Info CATLIN Project No. 221052 CATLIN Engineers and Scientists November 2023 Page 1 of 1 TABLE 2 Incident Name and No.: Tackett Residence - 13145 PUBLIC AND PRIVATE WATER SUPPLY WELLS AND OTHER RECEPTOR INFORMATION Well ID Property Address Durham County PIN Number Owner Name (Last, First MI) Owner Mailing Address Well Use Connected to County Water Supply? Distance/ Direction from Source Area (ft.) Comment WSW-72 307 Bacon Rd 0829-01-08-4124 Daehnrich, Alexander and Olesja 307 Bacon Rd,Rougemont, NC Potable No 1,426 / SSW Survey letter was returned stating they are on a well 400 feet deep. Location of well on property not specified. Location estimated. WSW-73 122 Red Mountain Rd 0829-01-28- 5328 Hodkin, Kyle and Christina 122 Red Mountain Rd, Rougemont, NC Non- Potable Yes 1,402 / SE Well and water meter observed on property. WSW-74 111 Red Mountain Rd 0829-01-18- 9694 Rougemont United Methodist Church 8009 Bunny Rd, Rougemont, NC Non- Potable Yes 995 / SE On public water. Has a well but resident does not know if it works. Receptor ID Pond 1 Pond 2 Pond 3 ft. = feet 307 Bacon Rd Daehnrich, Alexander and Olesja 1,319 / SW Pond Spans multiple parcels Lundsford, Gordon/Bowling, JW Estate 316 / W Location Contact Distance/ Direction from Source Area (ft.) Description Pond 500 Bacon Rd Ferrell, Douglas and Kristine 1,200 / W Pond NCDEQ; 13145_Tackett Residence.xlsx; T2_Receptor Info CATLIN Project No. 221052 CATLIN Engineers and Scientists November 2023 Page 1 of 1 TABLE 3 WELL CONSTRUCTION AND HISTORICAL WATER LEVEL GAUGING DATA Incident Name and No.: Tackett Residence - 13145 Well ID Date Installed (mm/dd/yy) Date Water Level Measured (mm/dd/yy) Well Diameter (inches) Well Casing Depth (ft. BLS) Screened Interval (x to y ft. BLS) Bottom of Well (ft. BLS) Top of Casing Elevation (ft.) Free-Phase Product Thickness* Depth to Groundwater from Top of Casing (ft.) Groundwater Elevation (ft.)Comments 04/13/22 NMT 4.09 94.95 Ɨ 11/08/22 NMT 8.63 90.41 12/02/22 NMT 5.67 93.37 09/27/23 NMT 5.04 94.00 04/13/22 NMT 3.83 96.17 Ɨ 11/08/22 NMT 9.96 90.04 12/02/22 NMT 6.69 93.31 09/27/23 NMT 6.47 93.53 04/13/22 NMT 2.73 95.78 Ɨ 11/08/22 NMT 10.23 88.28 12/02/22 NMT 3.22 95.29 Ɨ 09/27/23 NMT 5.88 92.63 TMW-04 11/01/22 11/01/22 1.0 5.0 5.0-15.0 15.0 NM NMT 8.65 NM TMW-05 11/01/22 11/01/22 1.0 5.0 5.0-15.0 15.0 NM NMT 8.44 NM NMT = No Measurable Thickness NM = Not Measured Ɨ = Water level was measured above the screened interval. * = if free-phase product is present in a well, ground water elevation should be calculated by: [top of casing elevation - depth to water]+ [free product thickness x specific gravity of the fuel type] ft. BLS = feet Below Land Surface 98.5120.05.0-20.05.02.004/12/22MW-03 4.0 4.0-19.0 19.0 100.00 99.0420.05.0-20.05.0 2.0 2.0 04/11/22MW-02 04/11/22MW-01 NCDEQ; 13145_Tackett Residence.xlsx; T3_Well Construction & Gauging CATLIN Project No. 221052 CATLIN Engineers and Scientists November 2023 Page 1 of 1 TABLE 4 SUMMARY OF GROUNDWATER LABORATORY RESULTS — STANDARD METHOD 6200B Incident Name and No.: Tackett Residence - 13145 Date Collected (mm/dd/yy) 09/27/23 <2.0 250 3.9 5.4 1.5 20 3.8 180 40 63 1.7 170 19 0.36 J 2.8 6.4 4.8 19.0 BMDL 09/27/23 <4.0 77 4.9 4.1 1.0 <0.61 ƚ <0.39 1.6 150 40 3.2 240 27 1.3 3.5 180 77 224 BMDL 09/27/23 2.4 J <0.18 <0.15 <0.13 <0.14 <0.30 <0.19 <0.20 <0.22 <0.15 <0.13 <0.38 <0.12 <0.15 <0.22 <0.20 <0.15 <0.73 BMDL 09/27/23 3.1 J <0.18 <0.15 <0.13 <0.14 <0.30 <0.19 <0.20 <0.22 <0.15 <0.13 <0.38 <0.12 <0.15 <0.22 <0.20 <0.15 <0.73 BMDL 09/27/23 <2.0 <0.18 <0.15 <0.13 <0.14 <0.30 <0.19 <0.20 <0.22 <0.15 <0.13 <0.38 <0.12 <0.15 <0.22 <0.20 <0.15 <0.73 BMDL All results in micrograms per liter (µg/L). BMDL = Below Method Detection Limit (refer to analytical report for a complete list of analytes and detection limits) GCL = Gross Contaminant Level 2L GWQS = NCAC T15A:02L Groundwater Quality Standards Bold results indicate concentrations above 2L GWQS. < = Less than Method Detection Limit ƚ = The Method Detection Limit is above the 2L GWQS. Well/ Sample ID MW-03 MW-02 MW-01 All Other SM 6200B AnalytesIsopropylbenzene (Cumene)p-Isopropyltoluene(p-Cymene)Naphthalene n-PropylbenzeneToluene 1,2-Dichloroethane 1,2-Dichloropropane Diisopropyl Ether (DIPE)Ethylbenzene1,2,4-TrimethylbenzeneContaminant of Concern AcetoneBenzenen-Butylbenzenesec-Butylbenzenetert-Butylbenzene Styrene 1,3,5-TrimethylbenzeneTotal XylenesVaries Varies 26,100 70 260,000 600 28,500 400 24,100 400 70,000 70 50,000 500 Field Blank Trip Blank J = Detected but below the Reporting Limit (lowest calibration standard); result is an estimated concentration (CLP J-Flag). 6,000 6 70,000 70 80,000 600 30,500 70 8,800 70 400 0.4 600 0.6 GCL (µg/L) 2L GWQS (µg/L) 6,000,000 6,000 11,700 25 5,000 1 5,900 70 14,750 70 NCDEQ; 13145_Tackett Residence.xlsx; T4_GW Results (SM 6200B) CATLIN Project No. 221052 CATLIN Engineers and Scientists November 2023 Page 1 of 1 TABLE 5 SUMMARY OF HISTORICAL GROUNDWATER LABORATORY RESULTS — STANDARD METHOD 6200B Incident Name and No.: Tackett Residence - 13145 Date Collected (mm/dd/yy) 04/13/22 54 J 740 69 6.2 4.7 J BMDL 31 4.1 J 190 180 38 J 57 4.5 J 14 J 170 32 BMDL 17 110 54 280 BMDL 11/08/22 <4.1 79 <3.2 2.1 2.2 0.68 J 19 3.5 150 11 <2.2 21 0.46 J <2.6 72 7.9 0.58 J 0.50 J 4.1 2.6 15.4 BMDL 09/27/23 <2.0 250 BMDL 3.9 5.4 1.5 20 3.8 180 40 BMDL 63 1.7 BMDL 170 19 0.36 J 2.8 6.4 4.8 19.0 BMDL 04/13/22 100 J 290 160 20 7.6 J BMDL <6.2 ƚ <3.6 ƚ 12 790 <22 88 11 <26 230 100 BMDL 41 750 270 1,340 BMDL 11/08/22 <8.1 180 <6.5 6.1 4.5 1.4 J 7.5 <0.72 ƚ 17 97 <4.5 42 5.5 <5.1 120 28 2.0 J 13 380 110 480 BMDL 09/27/23 <4.0 77 BMDL 4.9 4.1 1.0 <0.61 ƚ <0.39 1.6 150 BMDL 40 3.2 BMDL 240 27 1.3 3.5 180 77 224 BMDL 04/13/22 5.1 J <0.20 <1.6 <0.15 <0.11 BMDL <0.31 <0.18 <0.13 <0.21 <1.1 <0.11 <0.097 <1.3 <0.24 <0.086 BMDL <0.22 <0.20 <0.11 <0.69 BMDL 11/08/22 <2.0 <0.20 <1.6 <0.15 <0.11 <0.13 <0.31 <0.18 <0.13 <0.21 <1.1 <0.11 <0.097 <1.3 <0.24 <0.086 <0.11 <0.22 <0.20 <0.11 <0.69 BMDL 09/27/23 2.4 J <0.18 BMDL <0.15 <0.13 <0.14 <0.30 <0.19 <0.20 <0.22 BMDL <0.15 <0.13 BMDL <0.38 <0.12 <0.15 <0.22 <0.20 <0.15 <0.73 BMDL All results in micrograms per liter (µg/L). BMDL = Below Method Detection Limit (refer to analytical report for a complete list of analytes and detection limits) GCL = Gross Contaminant Level 2L GWQS = NCAC T15A:02L Groundwater Quality Standards Bold results indicate concentrations above 2L GWQS. < = Less than Method Detection Limit ƚ = The Method Detection Limit is above the 2L GWQS. MW-03 50,000 500 Varies Varies J = Detected but below the Reporting Limit (lowest calibration standard); result is an estimated concentration (CLP J-Flag). 28,500 400 24,100 400 600 0.6 GCL (µg/L) 2L GWQS (µg/L) 6,000,000 6,000 14,750 70 14,750 70 5,000 1 4,000,000 4,000 5,900 70 8,800 70 400 0.4 100,000 100 6,000 6 26,100 70 260,000 600 70,000 70 80,000 600 40,000 40 30,500 70 11,700 25 1,2,4-Trimethylbenzene1,3,5-TrimethylbenzeneTotal XylenesAll Other SM 6200B AnalytesWell/ Sample ID n-PropylbenzeneToluene sec-Butylbenzenetert-Butylbenzene Styrene Naphthalene 1,2-Dichloroethane 1,2-Dichloropropane Diisopropyl Ether (DIPE)Ethylbenzene2-Hexanone (MBK)MW-02 MW-01 Isopropylbenzene (Cumene)p-Isopropyltoluene(p-Cymene)4-Methyl-2-pentanone (MIBK)Contaminant of Concern AcetoneBenzene2-Butanone (MEK)n-ButylbenzeneNCDEQ; 13145_Tackett Residence.xlsx; T5_Historical GW (SM 6200B) CATLIN Project No. 221052 CATLIN Engineers and Scientists November 2023 Page 1 of 1 TABLE 6 Incident Name and No.: Tackett Residence - 13145 Date Collected 04/13/22 <0.420 1.95 J 166 30.7 1.96 J BMDL 04/13/22 0.553 J <0.747 208 53.1 0.596 J BMDL 04/13/22 <0.418 <0.702 <0.615 <0.691 <0.457 BMDL All results in micrograms per liter (µg/L). EPA = Environmental Protection Agency BMDL = Below Method Detection Limit 2L GWQS = NCAC T15A:02L Groundwater Quality StandardsBold results indicate concentrations above 2L GWQS. GCL = Gross Contaminant Level < = Less than Method Detection Limit NE = Not EstablishedJ = Detected but below the Reporting Limit (lowest calibration standard); therefore, result is an estimated concentration (CLP J-Flag). SUMMARY OF HISTORICAL GROUNDWATER LABORATORY RESULTS - EPA METHOD 625 MW-03 All Other EPA 625 AnalytesVaries Varies 12,000 30 NE NE NE NE 100,000 100 6,000 6 MW-01 MW-02 GCL (µg/L) 2L GWQS (µg/L) Diethylphthalate2,4-DimethylphenolNaphthalene2-Methylnaphthalene3/4-MethylphenolContaminant of Concern Well/ Sample ID NCDEQ; 13145_Tackett Residence.xlsx; T6_Historical GW (EPA 625) CATLIN Project No. 221052 CATLIN Engineers and Scientists November 2023 Page 1 of 1 TABLE 7 Incident Name and No.: Tackett Residence - 13145 Date Collected (mm/dd/yy) 04/13/22 <98 <98 190 3,800 <500 1,400 3,800 <598 <98 1,590 04/13/22 140 <100 280 3,600 <1,000 ƚ 3,300 3,600 <1,140 ƚ <100 3,580 04/13/22 <98 <98 <98 <100 <100 <100 <100 <198 <98 <198 All results in micrograms per liter (µg/L). MADEP = Massachusetts Department of Environmental Protection EPH = Extractable Petroleum Hydrocarbon VPH = Volatile Petroleum Hydrocarbon BMDL = Below Method Detection Limit 2L GWQS = NCAC T15A:02L Groundwater Quality Standards Bold results indicate concentrations above 2L GWQS. GCL = Gross Contaminant Level < = Less than Method Detection Limit NE = Not Established ƚ = The Method Detection Limit is above the 2L GWQS. SUMMARY OF HISTORICAL GROUNDWATER LABORATORY RESULTS - MADEP EPH AND VPH ANALYTICAL FRACTIONS NE 200 NE 400 NE 700 NE 200 NE 400 NE 700 NE 10,000 MW-01 MW-02 GCL (µg/L) 2L GWQS (µg/L) NE 700 NE 10,000 MW-03 NE 200 C9-C10 AromaticsMethod EPH Analytical Fractions VPH Analytical Fractions Combined MADEP EPH and VPH Fractions Contaminant of Concern C9-C18 AliphaticsC19-C36 AliphaticsC11-C22 AromaticsC5-C8 AliphaticsC9-C12 AliphaticsC5-C8 AliphaticsC9-C18 AliphaticsC19-C36 AliphaticsC9-C22 AromaticsWell/ Sample ID NCDEQ; 13145_Tackett Residence.xlsx; T7_Historical GW (MADEP) CATLIN Project No. 221052 CATLIN Engineers and Scientists November 2023 NCDEQ; 13145_Tackett Residence.doc CATLIN Engineers and Scientists CATLIN Project No. 221052 November 2023 FIGURES FIGUREPROJECTTITLE 1SITE VICINITY MAP SITE LOCATIONUS HWY 5 0 1R E D M O U N T A I N R D Copyright:© 2013 National Geographic Society, i-cubed 2,000 0 2,000 4,0001,000 Feet ³ INCIDENT NO.JOB NO.DATE SCALE DRAWN BY/CHECKED BY13145221052NOV 2023 AS SHOWN KMC/SJO TACKETT RESIDENCE13117 US HWY 501ROUGEMONT, NC FIGUREPROJECTTITLE 2POTENTIAL RECEPTOR MAP !(W !(P !(P!(P !(W !(W !(W !(P !(W !(P !(P !(P!(W !(P !(P !(P !(W !(W !(W !(W !(W !(W !(W !(P !(P !(W !(W !(P !(P !(W !(W!(W !(W !(W !(W !(P !(W !(W !(W !(P !(W !(W !(W !(W !(P!(W !(P !(P !(P !(P !(P !(P !(W !(P !(P !(P !(P !(W !(P !(P !(P !(P !(P !(P !(P SITE LOCATION R E D M O U N T A IN R D 1 ,5 0 0 FEET RADIUS WSW-46 WSW-47WSW-44 WSW-26 WSW-39 WSW-12 WSW-13A WSW-11 WSW-14 WSW-15WSW-16 WSW-51WSW-38WSW-18 WSW-19 WSW-28 WSW-13B WSW-27 WSW-43 WSW-50 WSW-49 WSW-48A WSW-48B WSW-1 WSW-21 WSW-10 WSW-8 WSW-32 WSW-9 WSW-5 WSW-35WSW-4WSW-3 WSW-2 WSW-24 WSW-37 WSW-25 WSW-33 WSW-42 WSW-31WSW-30 WSW-29 WSW-36US HWY 5 0 1 ( R OX BORO RD) BACON RD BILL POOLE RD1 ,0 0 0 F E ET RADIUS WSW-65 WSW-64 WSW-63 WSW-62 WSW-61 WSW-60 WSW-56 WSW-55 WSW-59 WSW-57 WSW-75 WSW-54 WSW-73 WSW-23 WSW-58 WSW-74 WSW-72 WSW-41 WSW-67 POND #3 POND #1 POND #2 WSW-68 250 F E ETRADIUSWSW-51AFORMERROBINSONSTORE Source: Esri, Maxar, Earthstar Geographics, and the GIS User Community 500 0 500 1,000250 Feet ³ INCIDENT NO.JOB NO.DATE SCALE DRAWN BY/CHECKED BY13145221052NOV 2023 AS SHOWN KMC/SJO TACKETT RESIDENCE13117 US HWY 501ROUGEMONT, NC LEGEND !(W Active Non-PotableWater Supply Well !(W Inactive Non-PotableWater Supply Well NOTES: 1. Well locations were obtained from a field surveyconducted on 7/12/21 and are approximate.2. Wells within a 1,500 feet radius are included in Table 2. !(P PotableWater Supply Well !(W FIGUREPROJECTTITLE 3SITE MAP !(P !(W !> !>!>")!>")!>US HWY 5 0 1 (ROXBORO RD) MW-01 MW-03 MW-02 WSW-9 WSW-10 TMW-05 TMW-04 FORMER ROBINSON STORE Source: Esri, Maxar, Earthstar Geographics, and the GIS User Community 30 0 30 6015 Feet ³ INCIDENT NO.JOB NO.DATE SCALE DRAWN BY/CHECKED BY13145221052NOV 2023 AS SHOWN KMC/SJO TACKETT RESIDENCE13117 US HWY 501ROUGEMONT, NC NOTE: Well and tank locations were obtained from previous reports prepared by other consultants and are approximate. Parcel Boundary LEGEND Monitoring Well (Type II)!> !(P Active PotableWater Supply Well Approximate Location of Former UST Basin !(W Inactive Non-PotableWater Supply Well Temporary Monitoring Well (Type II)")!> FIGUREPROJECTTITLE 4GROUNDWATER ELEVATION –SEPTEMBER 27, 2023 !(W !(P !(P!(P!(W!(W!(W !(P !(W !(P !(P !(P !(W !(P !(P !(P !(W !(W !(W !(W !(W !(W !(W !(P !(P !(W !(W !(P !(P !(W !(W !(W !(W !(W !(W !(P !(W !(W !(W !(P !(W !(W !(W !(W !(P !( !( !( !( !( !( !( !( !( !( !( !(W !(P !(P !(P !(P !(P !(P !(W !(P !(P !(P !(P !(P !(P !(P !(P !(W !(P !(P !(P !(P !(P !(P !> !>!> !> !> !> !><<US HWY 5 0 1 (ROXBORO RD) MW-01(94.00) MW-03(92.63) MW-02(93.53) WSW-9 WSW-10 93.5093.25 93.75 93.00 92.75 Source: Esri, Maxar, Earthstar Geographics, and the GIS User Community 30 0 30 6015 Feet ³ INCIDENT NO.JOB NO.DATE SCALE DRAWN BY/CHECKED BY13145221052NOV 2023 AS SHOWN KMC/SJO TACKETT RESIDENCE13117 US HWY 501ROUGEMONT, NC NOTES: 1. Well and tank locations were obtained from previous reports prepared by other consultants and are approximate.2. The groundwater contour interval is 0.25 feet. Parcel Boundary LEGEND Gauged Monitoring Well (Type II)!> !(P Active PotableWater Supply Well Approximate Location of Former UST Basin !(W Inactive Non-PotableWater Supply Well Groundwater Contour GroundwaterElevation (Feet)(##) Groundwater Flow Direction < FIGUREPROJECTTITLE 5 MONITORING WELLGROUNDWATER SAMPLEANALYTICAL RESULTS –SEPTEMBER 27, 2023 !(W !(P !(P!(P!(W!(W!(W !(P !(W !(P !(P !(P !(W !(P !(P !(P !(W !(W !(W !(W !(W !(W !(W !(P !(P !(W !(W !(P !(P !(W !(W !(W !(W !(W !(W !(P !(W !(W !(W !(P !(W !(W !(W !(W !(P !( !( !( !( !( !( !( !( !( !( !( !(W !(P !(P !(P !(P !(P !(P !(W !(P !(P !(P !(P !(P !(P !(P !(P !(W !(P !(P !(P !(P !(P !(P !> !>!> !> !> !> !>US HWY 5 0 1 (ROXBORO RD) MW-01 MW-03 MW-02 WSW-9 WSW-10 ???ESTIMATED HORIZONTAL EXTENT OF 2L GWQS EXCEEDANCES Source: Esri, Maxar, Earthstar Geographics, and the GIS User Community 30 0 30 6015 Feet ³ INCIDENT NO.JOB NO.DATE SCALE DRAWN BY/CHECKED BY13145221052NOV 2023 AS SHOWN KMC/SJO TACKETT RESIDENCE13117 US HWY 501ROUGEMONT, NC NOTE: Well and tank locations were obtained from previous reports prepared by other consultants and are approximate. Parcel Boundary LEGEND Sampled Monitoring Well (Type II)!> !(P Active PotableWater Supply Well Approximate Location of Former UST Basin !(W Inactive Non-PotableWater Supply Well DateCollected 09/27/23 250 20 3.8 180 17009/27/23 77 <0.61 ƚ <0.39 1.6 24009/27/23 <0.18 <0.30 <0.19 <0.20 <0.38 All results in micrograms per liter (µg/L).Refer to Table 4 for all results and notes. B old results are above 2L GWQS. GCL (µg/L)2L GWQS (µg/L) Naphthalene 70,000 70Diisopropyl Ether (DIPE)1,2-Dichloroethane 4000.4 SUMMARY OF GROUNDWATER LABORATORY RESULTS - SM 6200B 6000.6 6,0006 Incident Name and No.: Tackett Residence - 13145 MW-02MW-03 1,2-Dichloropropane Contaminant of Concern MW-01 Well/ SampleID 5,0001Benzene FIGUREPROJECTTITLE 6ESTIMATED HORIZONTALEXTENT OF BENZENE –SEPTEMBER 27, 2023 !(W !(P !(P!(P!(W!(W!(W !(P !(W !(P !(P !(P !(W !(P !(P !(P !(W !(W !(W !(W !(W !(W !(W !(P !(P !(W !(W !(P !(P !(W !(W !(W !(W !(W !(W !(P !(W !(W !(W !(P !(W !(W !(W !(W !(P !( !( !( !( !( !( !( !( !( !( !( !(W !(P !(P !(P !(P !(P !(P !(W !(P !(P !(P !(P !(P !(P !(P !(P !(W !(P !(P !(P !(P !(P !(P !> !>!> !> !> !> !>US HWY 5 0 1 (ROXBORO RD) MW-01(250) MW-03(<0.18) MW-02(77) WSW-9 WSW-10 ???(1) (10) (100) Source: Esri, Maxar, Earthstar Geographics, and the GIS User Community 30 0 30 6015 Feet ³ INCIDENT NO.JOB NO.DATE SCALE DRAWN BY/CHECKED BY13145221052NOV 2023 AS SHOWN KMC/SJO TACKETT RESIDENCE13117 US HWY 501ROUGEMONT, NC Parcel Boundary LEGEND Sampled Monitoring Well (Type II)!> !(P Active PotableWater Supply Well Approximate Location of Former UST Basin !(W Inactive Non-PotableWater Supply Well NOTES: 1. Well and tank locations were obtained from previous reports prepared by other consultants and are approximate.2. 2L GWQS for Benzene is 1 μg/L. Benzene Estimated Isoconcentration Benzene Concentration (μg/L)(##) NCDEQ; 13145_Tackett Residence.doc CATLIN Engineers and Scientists CATLIN Project No. 221052 November 2023 APPENDICES NCDEQ; 13145_Tackett Residence.doc CATLIN Engineers and Scientists CATLIN Project No. 221052 November 2023 APPENDIX A HISTORICAL DATA As mentioned above, Figure 1 is included which shows the estimated extent of the current groundwater impacts. The closest and most heavily impacted private water supply well is the Talmadge Oakley well and the inlet water quality that is being processed through the treatment system shows the following water quality condition: 64 ug/L of MTBE and 9.8 IPE. Virginia Tackett Property In August 1994, the Department sampled private wells in the vicinity of the Blalocks located at 13210 US Hwy 501 N. There was a reported release associated with this convenience mart. Two private water supply wells, Virginia Tackett and Darrell Ellis were sampled. Of the two wells sampled, only the Tackett well was found to contain petroleum-related contamination. Based on the testing performed, the Blalock Store was not believed to be the source of the contamination in the Tackett well. During the sampling of Mr. Ellis' well, a UST riser vent was observed at a building used by Mr. Ellis as a garage that was subsequently determined to be a former gas station known as the Robinson Store. The former owner of the store was deceased. The store was built in the 1940's and operated until approximately 1960. Based on the sampling results, incident# 13145 was assigned for the Virginia Tackett property in January 1995. The site property was accepted into the Department's State Lead program on January 24, 1995. A site visit and sampling of the Virginia Tackett property was performed in June 1995. The well was sampled and the results of the lab analysis confirmed the presence of petroleum- related compounds. Based on the water test results and Health Risk Evaluation by the State toxicologist, the Department initiated alternate, bottled water service for the property. Further assessment including a geophysical survey was performed at the Ellis property to locate the Robinson Store UST in January 1996. In 1997, one monitor well was installed and sampled, and a new water supply well was installed on the Virginia Tackett property which also included a Point of Entry (POE) system. Based on the results, one 550-gallon UST was removed along with contaminated soil. Based on the testing results, the Durham County Health Department required and supervised the abandonment of the water supply well. Following the installation of the new Tackett water supply well, alternate water service, including either bottled water and/or water line connection to the Tackett well, was provided to the following residences; 13102 Hwy 501N, 13107 Hwy 501N, 13115 Hwy 501N, 13121 Hwy 501 N, and 13123 Hwy 501 N. At present, Ms. Tackett resides in an assisted living complex and the residence is vacant. The POE system is no longer in place. Annie Bowling Property In the latter part of 1996, based on Department discussions with the area residents, information was provided that indicated there were two underground storage tanks (USTs) located on the property formerly owned by Ms. Annie Bowling. The property is adjacent to and north of the Mindy/Darryl Harris property located at 13107 Hwy 50 lN. A site visit was made in December 1996 that confirmed the presence of two USTs. The former property owner, Ms. Frances Gail Tremmel, daughter of Annie Bowling who was deceased, provided information concerning the historical use of the property. Through discussions with Ms. Tremmel, the property was formerly used as a store/gas station. According to Ms. Tremmel, the store/gas station was last used by a Mr. Jaspar Hill until the business was closed in October 1975. According to Ms. Tremmel the USTs were used to store gasoline but the tank size was not known. At the time that the USTs were identified (Dec. 1996), the former store building was being used by the Aircon Refrigeration Company as a commercial HVAC company. Also, two water supply wells located on the Mindy/Darryl Harris property adjacent APPENDIX A HISTORICAL DATA (NCDENR, 2010) NCDEQ; 13145_Tackett Residence CATLIN Project No. 221052 CATLIN Engineers and Scientists November 2023 ps;J Tackett Residence JJ3113 f'ommercial Category-A Durham County, RRO 13 /&/C October 1996 On October 8, 1996, the Tackett's water-supply well was sampled. Benzene concentrations in excess of North Carolina groundwater standards were detected. Results of the sample were sent to the Tackett residence. A report of activities and analytical results has been submitted. November 1996 Water-supply well laboratory analytical results were transmitted to the Tackett residence on November 8, 1996. Currently attempting to arrange a meeting with area property owners to discuss a community water-supply well (see Rougemont, Food Mart #8 site for additional information). December 1996 Meeting with area residents to discuss the location and other logistics of a community well has been put on hold until determination of responsible party for two USTs discovered at a former store located adjacent to and to the north of the Harris residence (see Rougemont, Food Mart #8 site for additional information). January 1997 Meeting with area residents to discuss the location and other logistics of a community well has been put on hold until determination of responsible party for two USTs discovered at a former store located adjacent to and to the north of the Harris residence. February 1997 Currently providing bottled water to Mrs. Virginia Tackett. Evaluating the possibility of installing a Type Ill water supply well. March 1997 April1997 Permit was obtained from Durham County Environmental Health Dept. to install a replacement water-supply well at the Tackett property. Mid-Atlantic met at the site with Mr. Bob Jordan of that office to site the location of the well. Mid-Atlantic also performed additional negotiations with Mr. Philip Cates of Durham County Environmental Health Dept. concerning the construction of the Type Ill well. Durham County would not allow a double-cased well because annular space requirements could not be met without excessive cost increase. Therefore, a single-cased, six-inch diameter well was proposed to be installed in a ten-inch diameter borehole to a depth of 200 feet to satisfy their requirements. Mid-Atlantic also obtained a signed agreement from Ms. Virginia APPENDIX A HISTORICAL DATA (NCDENR, 1998) NCDEQ; 13145_Tackett Residence CATLIN Project No. 221052 CATLIN Engineers and Scientists November 2023 Tackett to install the well on her property. May 1997 Mid-Atlantic installed a deep water-supply well on Tackett property on May 5 through May 7, 1997. Water-supply well was 302 feet deep with 175 feet of six-inch casing. Durham County currently has not approved well construction due to casing material used. Proposal submitted for the construction of a water-distribution system for the Tacketts and the Harrises. June 1997 Mid-Atlantic received authorization to install a water distribution system to supply water to the Harris and Tackett residences from the new Tackett well. Mid-Atlantic contracted with an attorney to draft access agreements to cross two properties (Lunsford and Tremmel) with an underground pipe to carry water to the Harris's. Mid-Atlantic also obtained an agreement from the Harris's to connect to the well. July 1997 Mid-Atlantic installed water distribution system (Lee & Sims performed work). Mid-Atlantic obtained the appropriate building, electrical, and plumbing inspections for the system. August 1997 Mid-Atlantic abandoned Tackett's old water-supply well. Mid-Atlantic received authorization for and completed the installation of a PVC liner and packer within the new Tackett well to conform with Durham County well construction ordinances. Mid-Atlantic also obtained a variance for multiple connections to the Tackett well. Well is now approved by Durham County. Upon completion of activities, landscaping was restored on four properties by removal of drill cuttings. grading, discing, seeding, and strawing affected areas. September 1997 Two driveways were restored by replacing gravel that had been disturbed by trenching activities. Water was determined to be safe for drinking by Durham County coliform test. A well water sample collected by Mid-Atlantic exhibited 13 ug/L of toluene (below NC groundwater standard of 1 ,000 ug/L). DEHNR issued a task authorization for removal of three drums of purged well water remaining on site. October 1997 DENR issued a task authorization for additional landscaping restoration at Tackett residence. Property owner had complained of dirt settling in the backfilled trenches for underground piping for water distribution system. November 1997 NCDEQ; 13145_Tackett Residence CATLIN Project No. 221052 APPENDIX A HISTORICAL DATA (NCDENR, 1998) CATLIN Engineers and Scientists November 2023 Additional landscaping restoration completed by Newton Landscaping. December 1997-January 1998 No work was performed at the site during these months. February 1998 DENR issued TA No. 13145-11 on February 25, 1998 for the installation of one monitoring well in the former UST location at the Robinson Store. Scope-of-work also included sampling of the Tackett water-supply well. March 1998 Mid-Atlantic prepared a right-of-entry agreement for installation of one monitoring well at the former Robinson store. Mid-Atlantic is currently negotiating with the property owner, Reid Hodnett, for access to the property. Tackett water-supply well was sampled March 27, 1998. April1998 Reid Hodnett has not signed access agreement for installation of monitoring well at the former Robinson Store. Tackett water-supply well sampling indicated her well water does not contain petroleum constituents. Ms. Tackett is currently having difficulties collecting money from Darryl Harris for the power bill to run the water-supply well system. May 1998 Reid Hodnett has not signed access agreement for installation of monitoring well at the former Robinson Store. Ms. Tackett is currently having difficulties collecting money from Darryl Harris for the power bill to run the water-supply well system. June 1998 Reid Hodnett has not signed access agreement for installation of monitoring well at the former Robinson Store. We did not receive any complaints from Ms. Tackett in the month of June regarding lack of payment from Darryl Harris. NCDEQ; 13145_Tackett Residence CATLIN Project No. 221052 APPENDIX A HISTORICAL DATA (NCDENR, 1998) CATLIN Engineers and Scientists November 2023 APPENDIX A HISTORICAL DATA (ATEC, 1996) NCDEQ; 13145_Tackett Residence CATLIN Project No. 221052 CATLIN Engineers and Scientists November 2023 POE System Sampling W&R personnel were onsite on April 13 and April 14, 2004 to collect influent and effluent samples from the Reid Hodnett (WSW-10) and Talmage Oakley (WSW-19) POE systems. Prior to sampling, the wells and lines were purged by opening a tap and allowing them to flow for 20 minutes before sampling. The influent samples from SW-10 and WSW-19 were collected directly from a tap at the wellheads before the POE system. The effluent samples were collected directly from taps after the POE systems. Figure 2 presents the locations of the WSW's. Table 1 presents property ownership information. The samples were collected directly into laboratory prepared containers, immediately placed on ice in a cooler and transported under chain of custody to a North Carolina Certified laboratory for analysis. The samples were analyzed for volatiles by EPA Method 62300. Based on the laboratory analytical report, no targeted compounds were identified in the influent and effluent samples collected from WSW-10. Analytical results of the influent WSW-19 sample indicated MTBE, 1,2-Dichloropropane, Isopropyl ether and Benzene ~t concentrations of 140 11g/L, 2.2 119/L, 1011g/L, and 1.8 11g/L, respectively. No targeted compounds were detected in the effluent sample collected from WSW-19. A copy of the analytical results is included in Appendix A. Water Supply Well Sampling On April 13 and April 14, 2004, W&R personnel collected groundwater samples from WSWs 2 & 3, WSWs 7 & 8, WSW-11, WSW 13A, 13B, & 14, WSW-18, WSW-21, WSW-23, and WSWs 25 through 28. Figure 2 presents the locations of the WSWs. Table 1 presents property ownership information. Prior to sampling, W&R purged each well by opening a tap and allowed it to flow for approximately, 15 to 20 minutes. The samples were collected directly into laboratory prepared containers, immediately placed on ice in a cooler and transported under chain of custody to a North Carolina Certified laboratory for analysis. The samples were analyzed for volatiles by EPA Method 62300. Based on the laboratory analytical report, results of the WSW-3 sample indicated MTBE at a concentration of 5.4 JLg/L. Analytical results of the WSW-7 sample indicated 1,2- Dichloroethane at a concentration of 1.2 JLg/L. Analytical results of the WSW-23 sample indicated Trichloroethane only at a concentration of 1.1 11g/L. Analytical results of the WSW-25 sample indicated Bromodichloromethane, Bromoform, Chlorodibromomethane and chloroform at concentrations of 14 JLg/L, 13 JLg/L, 18119/L, and 14 11gtL, respectively. No targeted compounds were detected in the other WSW well samples. A copy of the analytical results is included in Appendix A. APPENDIX A HISTORICAL DATA (W&R, 2004) NCDEQ; 13145_Tackett ResidenceCATLIN Project No. 221052 CATLIN Engineers and Scientists November 2023 NCDEQ; 13145_Tackett Residence.doc CATLIN Engineers and Scientists CATLIN Project No. 221052 November 2023 APPENDIX B SITE PHOTOGRAPHS APPENDIX B SITE PHOTOGRAPHS – SEPTEMBER 27, 2023 NCDEQ; 13145_Tackett Residence CATLIN Engineers and Scientists CATLIN Project No. 221052 November 2023 View of Tackett Residence site. View of MW-01, facing north. APPENDIX B SITE PHOTOGRAPHS – SEPTEMBER 27, 2023 NCDEQ; 13145_Tackett Residence CATLIN Engineers and Scientists CATLIN Project No. 221052 November 2023 View of MW-02, facing west. View of MW-03, facing northeast. NCDEQ; 13145_Tackett Residence.doc CATLIN Engineers and Scientists CATLIN Project No. 221052 November 2023 APPENDIX C DAILY ACTIVITIES LOG AND FIELD DATA SHEETS CATLIN PROJECT:SAMPLED BY: CATLIN PROJECT # :DATE SAMPLED: CLIENT'S NAME: MW-01 14.96 5.04 2.441 NMT 7.324 20 12.207 2 Method:Bailer Purge Start Time:12:13 Required Bails for 3 Well Volumes:31 Purge Stop Time:12:24 Required Bails for 5 Well Volumes:51 Was Well Purged Dry?No Number of Bails Removed:31 Sample Time:12:25 Groundwater Removed (gal):7.4 Equipment Used: Time Specific Cond. (µS/cm) Dissolved Oxygen (mg/L) pH (Standard Units) ORP (mV) Temperature (Co) 12:13 144.43 3.70 5.51 3.83 54.29 12:14 153.15 1.98 4.14 8.97 55.53 12:15 175.38 2.00 4.23 3.05 55.64 12:16 163.90 2.02 4.42 -2.24 55.55 12:17 172.36 2.23 4.73 -11.25 55.28 12:18 186.32 2.23 5.64 -20.44 54.98 12:19 169.01 2.12 5.78 -26.06 54.77 12:20 221.62 2.11 6.07 -37.15 54.44 12:21 220.79 2.29 6.11 -39.15 54.35 12:22 221.64 2.20 6.16 -42.13 54.22 Laboratory:Con-Test Analysis: High turbidity; light brown. Well Data Well ID Depth to Product (ft below TOC) Total Well Depth (ft) Purging Information Information Volume of Groundwater in Well Aqua TROLL 600 Turbidity and Additional Sampling Notes 6200B Laboratory Analysis Information Geochemical Parameters Depth to Water (ft below TOC) GROUNDWATER SAMPLING FORM Water Column (ft below TOC) One Well Volume (gal) Three Well Volumes (gal) Five Well Volumes (gal) 221052.01 NCDEQ-SLP; Petermann Monitoring Well Information N. Newman 9/27/2023 Tackett Residence Well Diameter (inches) CATLIN PROJECT:SAMPLED BY: CATLIN PROJECT # :DATE SAMPLED: CLIENT'S NAME: MW-02 12.53 6.47 2.045 NMT 6.135 19 10.224 2 Method:Bailer Purge Start Time:11:57 Required Bails for 3 Well Volumes:26 Purge Stop Time:12:06 Required Bails for 5 Well Volumes:43 Was Well Purged Dry?No Number of Bails Removed:26 Sample Time:12:06 Groundwater Removed (gal):6.2 Equipment Used: Time Specific Cond. (µS/cm) Dissolved Oxygen (mg/L) pH (Standard Units) ORP (mV) Temperature (Co) 11:57 83.62 3.18 5.65 51.47 54.93 11:58 73.24 1.92 4.71 20.41 55.29 11:59 75.31 1.98 5.54 16.12 55.20 12:00 75.39 2.01 5.56 11.88 55.06 12:01 80.37 1.92 5.67 5.98 54.87 12:02 82.12 1.89 5.73 3.43 54.63 12:03 82.49 1.89 5.85 2.97 54.54 12:04 83.08 1.89 5.83 2.02 54.46 Laboratory:Con-Test Analysis: Depth to Water (ft below TOC)One Well Volume (gal) GROUNDWATER SAMPLING FORM Tackett Residence N. Newman 221052.01 9/27/2023 NCDEQ-SLP; Petermann Monitoring Well Information Well Data Volume of Groundwater in Well Well ID Water Column (ft below TOC) 6200B Depth to Product (ft below TOC)Three Well Volumes (gal) Total Well Depth (ft)Five Well Volumes (gal) Well Diameter (inches) Purging Information Information Geochemical Parameters Aqua TROLL 600 Turbidity and Additional Sampling Notes Moderate turbidity; light brown. Laboratory Analysis Information CATLIN PROJECT:SAMPLED BY: CATLIN PROJECT # :DATE SAMPLED: CLIENT'S NAME: MW-03 14.12 5.88 2.304 NMT 6.913 20 11.522 2 Method:Bailer Purge Start Time:12:31 Required Bails for 3 Well Volumes:29 Purge Stop Time:12:41 Required Bails for 5 Well Volumes:49 Was Well Purged Dry?No Number of Bails Removed:29 Sample Time:12:41 Groundwater Removed (gal):7.0 Equipment Used: Time Specific Cond. (µS/cm) Dissolved Oxygen (mg/L) pH (Standard Units) ORP (mV) Temperature (Co) 12:30 51.63 3.58 5.78 26.11 53.89 12:31 51.71 2.84 5.58 60.48 54.02 12:32 47.09 2.75 5.67 73.45 53.94 12:33 45.33 2.61 5.71 84.82 53.80 12:34 46.37 2.48 5.80 93.53 53.59 12:35 45.73 2.35 5.95 98.50 53.37 12:36 45.87 2.27 5.99 103.79 53.21 12:37 46.18 2.23 6.07 106.08 53.09 12:38 46.35 2.23 6.06 107.87 53.04 12:39 46.34 2.22 5.98 109.30 53.01 Laboratory:Con-Test Analysis: Depth to Water (ft below TOC)One Well Volume (gal) GROUNDWATER SAMPLING FORM Tackett Residence N. Newman 221052.01 9/27/2023 NCDEQ-SLP; Petermann Monitoring Well Information Well Data Volume of Groundwater in Well Well ID Water Column (ft below TOC) 6200B Depth to Product (ft below TOC)Three Well Volumes (gal) Total Well Depth (ft)Five Well Volumes (gal) Well Diameter (inches) Purging Information Information Geochemical Parameters Aqua TROLL 600 Turbidity and Additional Sampling Notes High turbidity; light brown. Laboratory Analysis Information NCDEQ; 13145_Tackett Residence.doc CATLIN Engineers and Scientists CATLIN Project No. 221052 November 2023 APPENDIX D LABORATORY ANALYTICAL REPORT AND CHAIN OF CUSTODY DOCUMENT 39 Spruce Street * East Longmeadow, MA 01028 * FAX 413/525-6405 * TEL. 413/525-2332 November 14, 2023 Sean O’Neil CATLIN Engineers & Scientists 1044 Washington Street Raleigh, NC 27605 Project Location: Rougemont, NC Client Job Number: Project Number: 221052 Laboratory Work Order Number: 23I3807 Enclosed are results of analyses for samples as received by the laboratory on September 28, 2023. If you have any questions concerning this report, please feel free to contact me. Sincerely, Kaitlyn A. Feliciano Project Manager Table of Contents Sample Summary 3 Case Narrative 4 Sample Results 5 23I3807-01 5 23I3807-02 7 23I3807-03 9 23I3807-04 11 23I3807-05 13 Sample Preparation Information 15 QC Data 16 Volatile Organic Compounds by GC/MS 16 B353599 16 Flag/Qualifier Summary 20 Certifications 21 Chain of Custody/Sample Receipt 23 39 Spruce Street * East Longmeadow, MA 01028 * FAX 413/525-6405 * TEL. 413/525-2332 ANALYTICAL SUMMARY 11/14/2023 CATLIN Engineers & Scientists 1044 Washington Street Raleigh, NC 27605 ATTN: Sean O’Neil 221052 23I3807 The results of analyses performed on the following samples submitted to CON-TEST, a Pace Analytical Laboratory, are found in this report. PROJECT LOCATION: PURCHASE ORDER NUMBER: PROJECT NUMBER: REPORT DATE: WORK ORDER NUMBER: FIELD SAMPLE #LAB ID:MATRIX TESTSAMPLE DESCRIPTION SUB LAB Rougemont, NC 230927-4 MW-01 23I3807-01 Ground Water SM21-23 6200B MW-02 23I3807-02 Ground Water SM21-23 6200B MW-03 23I3807-03 Ground Water SM21-23 6200B FB 23I3807-04 Field Blank SM21-23 6200B Trip Blank 23I3807-05 Trip Blank Water SM21-23 6200B [TOC_1]Sample Summary[TOC] 39 Spruce Street * East Longmeadow, MA 01028 * FAX 413/525-6405 * TEL. 413/525-2332 CASE NARRATIVE SUMMARY All reported results are within defined laboratory quality control objectives unless listed below or otherwise qualified in this report. For method 6200B elevated reporting limits for sample 23I3807-02 due to high concentrations of target compounds. REVISED REPORT 11/13/23- Chloromethane added to sample -02 [TOC_1]Case Narrative[TOC] SM21-23 6200B Qualifications: Elevated reporting limit due to high concentration of target compounds. Analyte & Samples(s) Qualified: RL-11 23I3807-02[MW-02] The results of analyses reported only relate to samples submitted to Con-Test, a Pace Analytical Laboratory, for testing. I certify that the analyses listed above, unless specifically listed as subcontracted, if any, were performed under my direction according to the approved methodologies listed in this document, and that based upon my inquiry of those individuals immediately responsible for obtaining the information, the material contained in this report is, to the best of my knowledge and belief, accurate and complete. Lisa A. Worthington Technical Representative 39 Spruce Street * East Longmeadow, MA 01028 * FAX 413/525-6405 * TEL. 413/525-2332 Date Received: 9/28/2023 Work Order: 23I3807Sample Description:Project Location: Rougemont, NC Sample ID: 23I3807-01 Field Sample #: MW-01 Sample Matrix: Ground Water Sampled: 9/27/2023 12:25 [TOC_2]23I3807-01[TOC] AnalystAnalyzedDilutionFlag/QualRLResultsAnalyte Date/Time DL Units Date PreparedMethod Volatile Organic Compounds by GC/MS ND 50 10/3/23 2:53 EEHg/L2.0 10/2/23SM21-23 6200B1Acetone 250 10 10/3/23 6:23 EEHg/L3.7 10/2/23SM21-23 6200B20Benzene ND 0.50 10/3/23 2:53 EEHg/L0.15 10/2/23SM21-23 6200B1Bromobenzene ND 0.50 10/3/23 2:53 EEHg/L0.28 10/2/23SM21-23 6200B1Bromochloromethane ND 0.50 10/3/23 2:53 EEHg/L0.16 10/2/23SM21-23 6200B1Bromodichloromethane ND 0.50 10/3/23 2:53 EEHg/L0.41 10/2/23SM21-23 6200B1Bromoform ND 2.0 10/3/23 2:53 EEHg/L1.3 10/2/23SM21-23 6200B1Bromomethane ND 5.0 10/3/23 2:53 EEHg/L1.7 10/2/23SM21-23 6200B12-Butanone (MEK) 3.9 0.50 10/3/23 2:53 EEHg/L0.15 10/2/23SM21-23 6200B1n-Butylbenzene 5.4 0.50 10/3/23 2:53 EEHg/L0.13 10/2/23SM21-23 6200B1sec-Butylbenzene 1.5 0.50 10/3/23 2:53 EEHg/L0.14 10/2/23SM21-23 6200B1tert-Butylbenzene ND 1.0 10/3/23 2:53 EEHg/L0.16 10/2/23SM21-23 6200B1Carbon Tetrachloride ND 0.50 10/3/23 2:53 EEHg/L0.12 10/2/23SM21-23 6200B1Chlorobenzene ND 50 10/3/23 2:53 EEHg/L20 10/2/23SM21-23 6200B1Ethanol ND 0.50 10/3/23 2:53 EEHg/L0.20 10/2/23SM21-23 6200B1Chlorodibromomethane ND 0.50 10/3/23 2:53 EEHg/L0.34 10/2/23SM21-23 6200B1Chloroethane ND 0.50 10/3/23 2:53 EEHg/L0.14 10/2/23SM21-23 6200B1Chloroform ND 0.60 10/3/23 2:53 EEHg/L0.50 10/2/23SM21-23 6200B1Chloromethane ND 0.50 10/3/23 2:53 EEHg/L0.15 10/2/23SM21-23 6200B12-Chlorotoluene ND 0.50 10/3/23 2:53 EEHg/L0.15 10/2/23SM21-23 6200B14-Chlorotoluene ND 0.50 10/3/23 2:53 EEHg/L0.16 10/2/23SM21-23 6200B11,2-Dibromoethane (EDB) ND 0.50 10/3/23 2:53 EEHg/L0.13 10/2/23SM21-23 6200B11,2-Dichlorobenzene ND 0.50 10/3/23 2:53 EEHg/L0.14 10/2/23SM21-23 6200B11,3-Dichlorobenzene ND 0.50 10/3/23 2:53 EEHg/L0.13 10/2/23SM21-23 6200B11,4-Dichlorobenzene ND 0.50 10/3/23 2:53 EEHg/L0.16 10/2/23SM21-23 6200B1Dichlorodifluoromethane (Freon 12) ND 0.50 10/3/23 2:53 EEHg/L0.14 10/2/23SM21-23 6200B11,1-Dichloroethane 20 1.0 10/3/23 2:53 EEHg/L0.30 10/2/23SM21-23 6200B11,2-Dichloroethane ND 0.50 10/3/23 2:53 EEHg/L0.14 10/2/23SM21-23 6200B11,1-Dichloroethylene ND 0.50 10/3/23 2:53 EEHg/L0.14 10/2/23SM21-23 6200B1cis-1,2-Dichloroethylene ND 0.50 10/3/23 2:53 EEHg/L0.17 10/2/23SM21-23 6200B1trans-1,2-Dichloroethylene 3.8 0.50 10/3/23 2:53 EEHg/L0.19 10/2/23SM21-23 6200B11,2-Dichloropropane ND 0.50 10/3/23 2:53 EEHg/L0.12 10/2/23SM21-23 6200B11,3-Dichloropropane ND 0.50 10/3/23 2:53 EEHg/L0.35 10/2/23SM21-23 6200B12,2-Dichloropropane ND 0.50 10/3/23 2:53 EEHg/L0.15 10/2/23SM21-23 6200B11,1-Dichloropropene ND 0.50 10/3/23 2:53 EEHg/L0.16 10/2/23SM21-23 6200B1cis-1,3-Dichloropropene ND 0.50 10/3/23 2:53 EEHg/L0.14 10/2/23SM21-23 6200B1trans-1,3-Dichloropropene 180 0.50 10/3/23 2:53 EEHg/L0.20 10/2/23SM21-23 6200B1Diisopropyl Ether (DIPE) 40 0.50 10/3/23 2:53 EEHg/L0.22 10/2/23SM21-23 6200B1Ethylbenzene ND 5.0 10/3/23 2:53 EEHg/L1.2 10/2/23SM21-23 6200B12-Hexanone (MBK) 63 0.50 10/3/23 2:53 EEHg/L0.15 10/2/23SM21-23 6200B1Isopropylbenzene (Cumene) 1.7 0.50 10/3/23 2:53 EEHg/L0.13 10/2/23SM21-23 6200B1p-Isopropyltoluene (p-Cymene) ND 0.50 10/3/23 2:53 EEHg/L0.17 10/2/23SM21-23 6200B1Methyl tert-Butyl Ether (MTBE) ND 5.0 10/3/23 2:53 EEHg/L0.18 10/2/23SM21-23 6200B1Methylene Chloride ND 5.0 10/3/23 2:53 EEHg/L1.3 10/2/23SM21-23 6200B14-Methyl-2-pentanone (MIBK) [TOC_1]Sample Results[TOC] 39 Spruce Street * East Longmeadow, MA 01028 * FAX 413/525-6405 * TEL. 413/525-2332 Date Received: 9/28/2023 Work Order: 23I3807Sample Description:Project Location: Rougemont, NC Sample ID: 23I3807-01 Field Sample #: MW-01 Sample Matrix: Ground Water Sampled: 9/27/2023 12:25 AnalystAnalyzedDilutionFlag/QualRLResultsAnalyte Date/Time DL Units Date PreparedMethod Volatile Organic Compounds by GC/MS 170 10 10/3/23 6:23 EEHg/L7.6 10/2/23SM21-23 6200B20Naphthalene 19 0.50 10/3/23 2:53 EEHg/L0.12 10/2/23SM21-23 6200B1n-Propylbenzene 0.36 0.50 10/3/23 2:53 EEHg/L0.15 10/2/23SM21-23 6200B1JStyrene ND 0.50 10/3/23 2:53 EEHg/L0.14 10/2/23SM21-23 6200B11,1,2,2-Tetrachloroethane ND 0.50 10/3/23 2:53 EEHg/L0.17 10/2/23SM21-23 6200B1Tetrachloroethylene 2.8 0.50 10/3/23 2:53 EEHg/L0.22 10/2/23SM21-23 6200B1Toluene ND 1.0 10/3/23 2:53 EEHg/L0.34 10/2/23SM21-23 6200B11,2,3-Trichlorobenzene ND 0.50 10/3/23 2:53 EEHg/L0.30 10/2/23SM21-23 6200B11,2,4-Trichlorobenzene ND 0.50 10/3/23 2:53 EEHg/L0.15 10/2/23SM21-23 6200B11,1,1-Trichloroethane ND 0.50 10/3/23 2:53 EEHg/L0.19 10/2/23SM21-23 6200B11,1,2-Trichloroethane ND 0.50 10/3/23 2:53 EEHg/L0.17 10/2/23SM21-23 6200B1Trichloroethylene ND 0.50 10/3/23 2:53 EEHg/L0.15 10/2/23SM21-23 6200B1Trichlorofluoromethane (Freon 11) ND 0.50 10/3/23 2:53 EEHg/L0.28 10/2/23SM21-23 6200B11,2,3-Trichloropropane 6.4 0.50 10/3/23 2:53 EEHg/L0.20 10/2/23SM21-23 6200B11,2,4-Trimethylbenzene 4.8 0.50 10/3/23 2:53 EEHg/L0.15 10/2/23SM21-23 6200B11,3,5-Trimethylbenzene ND 20 10/3/23 2:53 EEHg/L1.7 10/2/23SM21-23 6200B1Vinyl Acetate ND 0.50 10/3/23 2:53 EEHg/L0.24 10/2/23SM21-23 6200B1Vinyl Chloride 8.0 1.0 10/3/23 2:53 EEHg/L0.49 10/2/23SM21-23 6200B1m+p Xylene 11 0.50 10/3/23 2:53 EEHg/L0.24 10/2/23SM21-23 6200B1o-Xylene Surrogates % Recovery Recovery Limits Flag/Qual 1,2-Dichloroethane-d4 99.8 10/3/23 2:5370-130 1,2-Dichloroethane-d4 98.9 10/3/23 6:2370-130 Toluene-d8 103 10/3/23 2:5370-130 Toluene-d8 103 10/3/23 6:2370-130 4-Bromofluorobenzene 119 10/3/23 2:5370-130 4-Bromofluorobenzene 107 10/3/23 6:2370-130 39 Spruce Street * East Longmeadow, MA 01028 * FAX 413/525-6405 * TEL. 413/525-2332 Date Received: 9/28/2023 Work Order: 23I3807Sample Description:Project Location: Rougemont, NC Sample ID: 23I3807-02 Field Sample #: MW-02 Sample Matrix: Ground Water Sampled: 9/27/2023 12:06 [TOC_2]23I3807-02[TOC] AnalystAnalyzedDilutionFlag/QualRLResultsAnalyte Date/Time DL Units Date PreparedMethod Sample Flags: RL-11 Volatile Organic Compounds by GC/MS ND 100 10/3/23 3:21 EEHg/L4.0 10/2/23SM21-23 6200B2Acetone 77 1.0 10/3/23 3:21 EEHg/L0.37 10/2/23SM21-23 6200B2Benzene ND 1.0 10/3/23 3:21 EEHg/L0.30 10/2/23SM21-23 6200B2Bromobenzene ND 1.0 10/3/23 3:21 EEHg/L0.57 10/2/23SM21-23 6200B2Bromochloromethane ND 1.0 10/3/23 3:21 EEHg/L0.32 10/2/23SM21-23 6200B2Bromodichloromethane ND 1.0 10/3/23 3:21 EEHg/L0.82 10/2/23SM21-23 6200B2Bromoform ND 4.0 10/3/23 3:21 EEHg/L2.6 10/2/23SM21-23 6200B2Bromomethane ND 10 10/3/23 3:21 EEHg/L3.4 10/2/23SM21-23 6200B22-Butanone (MEK) 4.9 1.0 10/3/23 3:21 EEHg/L0.30 10/2/23SM21-23 6200B2n-Butylbenzene 4.1 1.0 10/3/23 3:21 EEHg/L0.25 10/2/23SM21-23 6200B2sec-Butylbenzene 1.0 1.0 10/3/23 3:21 EEHg/L0.28 10/2/23SM21-23 6200B2tert-Butylbenzene ND 1.0 10/3/23 3:21 EEHg/L0.33 10/2/23SM21-23 6200B2Carbon Tetrachloride ND 1.0 10/3/23 3:21 EEHg/L0.24 10/2/23SM21-23 6200B2Chlorobenzene ND 100 10/3/23 3:21 EEHg/L41 10/2/23SM21-23 6200B2Ethanol ND 1.0 10/3/23 3:21 EEHg/L0.40 10/2/23SM21-23 6200B2Chlorodibromomethane ND 1.0 10/3/23 3:21 EEHg/L0.68 10/2/23SM21-23 6200B2Chloroethane ND 1.0 10/3/23 3:21 EEHg/L0.28 10/2/23SM21-23 6200B2Chloroform ND 1.2 10/3/23 3:21 EEHg/L1.0 10/2/23SM21-23 6200B2Chloromethane ND 1.0 10/3/23 3:21 EEHg/L0.31 10/2/23SM21-23 6200B22-Chlorotoluene ND 1.0 10/3/23 3:21 EEHg/L0.31 10/2/23SM21-23 6200B24-Chlorotoluene ND 1.0 10/3/23 3:21 EEHg/L0.32 10/2/23SM21-23 6200B21,2-Dibromoethane (EDB) ND 1.0 10/3/23 3:21 EEHg/L0.26 10/2/23SM21-23 6200B21,2-Dichlorobenzene ND 1.0 10/3/23 3:21 EEHg/L0.27 10/2/23SM21-23 6200B21,3-Dichlorobenzene ND 1.0 10/3/23 3:21 EEHg/L0.26 10/2/23SM21-23 6200B21,4-Dichlorobenzene ND 1.0 10/3/23 3:21 EEHg/L0.32 10/2/23SM21-23 6200B2Dichlorodifluoromethane (Freon 12) ND 1.0 10/3/23 3:21 EEHg/L0.27 10/2/23SM21-23 6200B21,1-Dichloroethane ND 1.0 10/3/23 3:21 EEHg/L0.61 10/2/23SM21-23 6200B21,2-Dichloroethane ND 1.0 10/3/23 3:21 EEHg/L0.28 10/2/23SM21-23 6200B21,1-Dichloroethylene ND 1.0 10/3/23 3:21 EEHg/L0.28 10/2/23SM21-23 6200B2cis-1,2-Dichloroethylene ND 1.0 10/3/23 3:21 EEHg/L0.34 10/2/23SM21-23 6200B2trans-1,2-Dichloroethylene ND 1.0 10/3/23 3:21 EEHg/L0.39 10/2/23SM21-23 6200B21,2-Dichloropropane ND 1.0 10/3/23 3:21 EEHg/L0.23 10/2/23SM21-23 6200B21,3-Dichloropropane ND 1.0 10/3/23 3:21 EEHg/L0.70 10/2/23SM21-23 6200B22,2-Dichloropropane ND 1.0 10/3/23 3:21 EEHg/L0.30 10/2/23SM21-23 6200B21,1-Dichloropropene ND 1.0 10/3/23 3:21 EEHg/L0.33 10/2/23SM21-23 6200B2cis-1,3-Dichloropropene ND 1.0 10/3/23 3:21 EEHg/L0.28 10/2/23SM21-23 6200B2trans-1,3-Dichloropropene 1.6 1.0 10/3/23 3:21 EEHg/L0.40 10/2/23SM21-23 6200B2Diisopropyl Ether (DIPE) 150 1.0 10/3/23 3:21 EEHg/L0.44 10/2/23SM21-23 6200B2Ethylbenzene ND 10 10/3/23 3:21 EEHg/L2.4 10/2/23SM21-23 6200B22-Hexanone (MBK) 40 1.0 10/3/23 3:21 EEHg/L0.30 10/2/23SM21-23 6200B2Isopropylbenzene (Cumene) 3.2 1.0 10/3/23 3:21 EEHg/L0.25 10/2/23SM21-23 6200B2p-Isopropyltoluene (p-Cymene) ND 1.0 10/3/23 3:21 EEHg/L0.34 10/2/23SM21-23 6200B2Methyl tert-Butyl Ether (MTBE) ND 10 10/3/23 3:21 EEHg/L0.35 10/2/23SM21-23 6200B2Methylene Chloride ND 10 10/3/23 3:21 EEHg/L2.6 10/2/23SM21-23 6200B24-Methyl-2-pentanone (MIBK) 39 Spruce Street * East Longmeadow, MA 01028 * FAX 413/525-6405 * TEL. 413/525-2332 Date Received: 9/28/2023 Work Order: 23I3807Sample Description:Project Location: Rougemont, NC Sample ID: 23I3807-02 Field Sample #: MW-02 Sample Matrix: Ground Water Sampled: 9/27/2023 12:06 AnalystAnalyzedDilutionFlag/QualRLResultsAnalyte Date/Time DL Units Date PreparedMethod Sample Flags: RL-11 Volatile Organic Compounds by GC/MS 240 1.0 10/3/23 3:21 EEHg/L0.76 10/2/23SM21-23 6200B2Naphthalene 27 1.0 10/3/23 3:21 EEHg/L0.25 10/2/23SM21-23 6200B2n-Propylbenzene 1.3 1.0 10/3/23 3:21 EEHg/L0.30 10/2/23SM21-23 6200B2Styrene ND 1.0 10/3/23 3:21 EEHg/L0.27 10/2/23SM21-23 6200B21,1,2,2-Tetrachloroethane ND 1.0 10/3/23 3:21 EEHg/L0.34 10/2/23SM21-23 6200B2Tetrachloroethylene 3.5 1.0 10/3/23 3:21 EEHg/L0.45 10/2/23SM21-23 6200B2Toluene ND 2.0 10/3/23 3:21 EEHg/L0.68 10/2/23SM21-23 6200B21,2,3-Trichlorobenzene ND 1.0 10/3/23 3:21 EEHg/L0.60 10/2/23SM21-23 6200B21,2,4-Trichlorobenzene ND 1.0 10/3/23 3:21 EEHg/L0.30 10/2/23SM21-23 6200B21,1,1-Trichloroethane ND 1.0 10/3/23 3:21 EEHg/L0.38 10/2/23SM21-23 6200B21,1,2-Trichloroethane ND 1.0 10/3/23 3:21 EEHg/L0.35 10/2/23SM21-23 6200B2Trichloroethylene ND 1.0 10/3/23 3:21 EEHg/L0.31 10/2/23SM21-23 6200B2Trichlorofluoromethane (Freon 11) ND 1.0 10/3/23 3:21 EEHg/L0.55 10/2/23SM21-23 6200B21,2,3-Trichloropropane 180 1.0 10/3/23 3:21 EEHg/L0.40 10/2/23SM21-23 6200B21,2,4-Trimethylbenzene 77 1.0 10/3/23 3:21 EEHg/L0.30 10/2/23SM21-23 6200B21,3,5-Trimethylbenzene ND 40 10/3/23 3:21 EEHg/L3.3 10/2/23SM21-23 6200B2Vinyl Acetate ND 1.0 10/3/23 3:21 EEHg/L0.47 10/2/23SM21-23 6200B2Vinyl Chloride 190 2.0 10/3/23 3:21 EEHg/L0.98 10/2/23SM21-23 6200B2m+p Xylene 34 1.0 10/3/23 3:21 EEHg/L0.49 10/2/23SM21-23 6200B2o-Xylene Surrogates % Recovery Recovery Limits Flag/Qual 1,2-Dichloroethane-d4 96.9 10/3/23 3:2170-130 Toluene-d8 102 10/3/23 3:2170-130 4-Bromofluorobenzene 109 10/3/23 3:2170-130 39 Spruce Street * East Longmeadow, MA 01028 * FAX 413/525-6405 * TEL. 413/525-2332 Date Received: 9/28/2023 Work Order: 23I3807Sample Description:Project Location: Rougemont, NC Sample ID: 23I3807-03 Field Sample #: MW-03 Sample Matrix: Ground Water Sampled: 9/27/2023 12:41 [TOC_2]23I3807-03[TOC] AnalystAnalyzedDilutionFlag/QualRLResultsAnalyte Date/Time DL Units Date PreparedMethod Volatile Organic Compounds by GC/MS 2.4 50 10/3/23 2:26 EEHg/L2.0 10/2/23SM21-23 6200B1JAcetone ND 0.50 10/3/23 2:26 EEHg/L0.18 10/2/23SM21-23 6200B1Benzene ND 0.50 10/3/23 2:26 EEHg/L0.15 10/2/23SM21-23 6200B1Bromobenzene ND 0.50 10/3/23 2:26 EEHg/L0.28 10/2/23SM21-23 6200B1Bromochloromethane ND 0.50 10/3/23 2:26 EEHg/L0.16 10/2/23SM21-23 6200B1Bromodichloromethane ND 0.50 10/3/23 2:26 EEHg/L0.41 10/2/23SM21-23 6200B1Bromoform ND 2.0 10/3/23 2:26 EEHg/L1.3 10/2/23SM21-23 6200B1Bromomethane ND 5.0 10/3/23 2:26 EEHg/L1.7 10/2/23SM21-23 6200B12-Butanone (MEK) ND 0.50 10/3/23 2:26 EEHg/L0.15 10/2/23SM21-23 6200B1n-Butylbenzene ND 0.50 10/3/23 2:26 EEHg/L0.13 10/2/23SM21-23 6200B1sec-Butylbenzene ND 0.50 10/3/23 2:26 EEHg/L0.14 10/2/23SM21-23 6200B1tert-Butylbenzene ND 1.0 10/3/23 2:26 EEHg/L0.16 10/2/23SM21-23 6200B1Carbon Tetrachloride ND 0.50 10/3/23 2:26 EEHg/L0.12 10/2/23SM21-23 6200B1Chlorobenzene ND 50 10/3/23 2:26 EEHg/L20 10/2/23SM21-23 6200B1Ethanol ND 0.50 10/3/23 2:26 EEHg/L0.20 10/2/23SM21-23 6200B1Chlorodibromomethane ND 0.50 10/3/23 2:26 EEHg/L0.34 10/2/23SM21-23 6200B1Chloroethane ND 0.50 10/3/23 2:26 EEHg/L0.14 10/2/23SM21-23 6200B1Chloroform ND 0.60 10/3/23 2:26 EEHg/L0.50 10/2/23SM21-23 6200B1Chloromethane ND 0.50 10/3/23 2:26 EEHg/L0.15 10/2/23SM21-23 6200B12-Chlorotoluene ND 0.50 10/3/23 2:26 EEHg/L0.15 10/2/23SM21-23 6200B14-Chlorotoluene ND 0.50 10/3/23 2:26 EEHg/L0.16 10/2/23SM21-23 6200B11,2-Dibromoethane (EDB) ND 0.50 10/3/23 2:26 EEHg/L0.13 10/2/23SM21-23 6200B11,2-Dichlorobenzene ND 0.50 10/3/23 2:26 EEHg/L0.14 10/2/23SM21-23 6200B11,3-Dichlorobenzene ND 0.50 10/3/23 2:26 EEHg/L0.13 10/2/23SM21-23 6200B11,4-Dichlorobenzene ND 0.50 10/3/23 2:26 EEHg/L0.16 10/2/23SM21-23 6200B1Dichlorodifluoromethane (Freon 12) ND 0.50 10/3/23 2:26 EEHg/L0.14 10/2/23SM21-23 6200B11,1-Dichloroethane ND 1.0 10/3/23 2:26 EEHg/L0.30 10/2/23SM21-23 6200B11,2-Dichloroethane ND 0.50 10/3/23 2:26 EEHg/L0.14 10/2/23SM21-23 6200B11,1-Dichloroethylene ND 0.50 10/3/23 2:26 EEHg/L0.14 10/2/23SM21-23 6200B1cis-1,2-Dichloroethylene ND 0.50 10/3/23 2:26 EEHg/L0.17 10/2/23SM21-23 6200B1trans-1,2-Dichloroethylene ND 0.50 10/3/23 2:26 EEHg/L0.19 10/2/23SM21-23 6200B11,2-Dichloropropane ND 0.50 10/3/23 2:26 EEHg/L0.12 10/2/23SM21-23 6200B11,3-Dichloropropane ND 0.50 10/3/23 2:26 EEHg/L0.35 10/2/23SM21-23 6200B12,2-Dichloropropane ND 0.50 10/3/23 2:26 EEHg/L0.15 10/2/23SM21-23 6200B11,1-Dichloropropene ND 0.50 10/3/23 2:26 EEHg/L0.16 10/2/23SM21-23 6200B1cis-1,3-Dichloropropene ND 0.50 10/3/23 2:26 EEHg/L0.14 10/2/23SM21-23 6200B1trans-1,3-Dichloropropene ND 0.50 10/3/23 2:26 EEHg/L0.20 10/2/23SM21-23 6200B1Diisopropyl Ether (DIPE) ND 0.50 10/3/23 2:26 EEHg/L0.22 10/2/23SM21-23 6200B1Ethylbenzene ND 5.0 10/3/23 2:26 EEHg/L1.2 10/2/23SM21-23 6200B12-Hexanone (MBK) ND 0.50 10/3/23 2:26 EEHg/L0.15 10/2/23SM21-23 6200B1Isopropylbenzene (Cumene) ND 0.50 10/3/23 2:26 EEHg/L0.13 10/2/23SM21-23 6200B1p-Isopropyltoluene (p-Cymene) ND 0.50 10/3/23 2:26 EEHg/L0.17 10/2/23SM21-23 6200B1Methyl tert-Butyl Ether (MTBE) ND 5.0 10/3/23 2:26 EEHg/L0.18 10/2/23SM21-23 6200B1Methylene Chloride ND 5.0 10/3/23 2:26 EEHg/L1.3 10/2/23SM21-23 6200B14-Methyl-2-pentanone (MIBK) 39 Spruce Street * East Longmeadow, MA 01028 * FAX 413/525-6405 * TEL. 413/525-2332 Date Received: 9/28/2023 Work Order: 23I3807Sample Description:Project Location: Rougemont, NC Sample ID: 23I3807-03 Field Sample #: MW-03 Sample Matrix: Ground Water Sampled: 9/27/2023 12:41 AnalystAnalyzedDilutionFlag/QualRLResultsAnalyte Date/Time DL Units Date PreparedMethod Volatile Organic Compounds by GC/MS ND 0.50 10/3/23 2:26 EEHg/L0.38 10/2/23SM21-23 6200B1Naphthalene ND 0.50 10/3/23 2:26 EEHg/L0.12 10/2/23SM21-23 6200B1n-Propylbenzene ND 0.50 10/3/23 2:26 EEHg/L0.15 10/2/23SM21-23 6200B1Styrene ND 0.50 10/3/23 2:26 EEHg/L0.14 10/2/23SM21-23 6200B11,1,2,2-Tetrachloroethane ND 0.50 10/3/23 2:26 EEHg/L0.17 10/2/23SM21-23 6200B1Tetrachloroethylene ND 0.50 10/3/23 2:26 EEHg/L0.22 10/2/23SM21-23 6200B1Toluene ND 1.0 10/3/23 2:26 EEHg/L0.34 10/2/23SM21-23 6200B11,2,3-Trichlorobenzene ND 0.50 10/3/23 2:26 EEHg/L0.30 10/2/23SM21-23 6200B11,2,4-Trichlorobenzene ND 0.50 10/3/23 2:26 EEHg/L0.15 10/2/23SM21-23 6200B11,1,1-Trichloroethane ND 0.50 10/3/23 2:26 EEHg/L0.19 10/2/23SM21-23 6200B11,1,2-Trichloroethane ND 0.50 10/3/23 2:26 EEHg/L0.17 10/2/23SM21-23 6200B1Trichloroethylene ND 0.50 10/3/23 2:26 EEHg/L0.15 10/2/23SM21-23 6200B1Trichlorofluoromethane (Freon 11) ND 0.50 10/3/23 2:26 EEHg/L0.28 10/2/23SM21-23 6200B11,2,3-Trichloropropane ND 0.50 10/3/23 2:26 EEHg/L0.20 10/2/23SM21-23 6200B11,2,4-Trimethylbenzene ND 0.50 10/3/23 2:26 EEHg/L0.15 10/2/23SM21-23 6200B11,3,5-Trimethylbenzene ND 20 10/3/23 2:26 EEHg/L1.7 10/2/23SM21-23 6200B1Vinyl Acetate ND 0.50 10/3/23 2:26 EEHg/L0.24 10/2/23SM21-23 6200B1Vinyl Chloride ND 1.0 10/3/23 2:26 EEHg/L0.49 10/2/23SM21-23 6200B1m+p Xylene ND 0.50 10/3/23 2:26 EEHg/L0.24 10/2/23SM21-23 6200B1o-Xylene Surrogates % Recovery Recovery Limits Flag/Qual 1,2-Dichloroethane-d4 102 10/3/23 2:2670-130 Toluene-d8 104 10/3/23 2:2670-130 4-Bromofluorobenzene 104 10/3/23 2:2670-130 39 Spruce Street * East Longmeadow, MA 01028 * FAX 413/525-6405 * TEL. 413/525-2332 Date Received: 9/28/2023 Work Order: 23I3807Sample Description:Project Location: Rougemont, NC Sample ID: 23I3807-04 Field Sample #: FB Sample Matrix: Field Blank Sampled: 9/27/2023 12:50 [TOC_2]23I3807-04[TOC] AnalystAnalyzedDilutionFlag/QualRLResultsAnalyte Date/Time DL Units Date PreparedMethod Volatile Organic Compounds by GC/MS 3.1 50 10/2/23 23:14 EEHg/L2.0 10/2/23SM21-23 6200B1JAcetone ND 0.50 10/2/23 23:14 EEHg/L0.18 10/2/23SM21-23 6200B1Benzene ND 0.50 10/2/23 23:14 EEHg/L0.15 10/2/23SM21-23 6200B1Bromobenzene ND 0.50 10/2/23 23:14 EEHg/L0.28 10/2/23SM21-23 6200B1Bromochloromethane ND 0.50 10/2/23 23:14 EEHg/L0.16 10/2/23SM21-23 6200B1Bromodichloromethane ND 0.50 10/2/23 23:14 EEHg/L0.41 10/2/23SM21-23 6200B1Bromoform ND 2.0 10/2/23 23:14 EEHg/L1.3 10/2/23SM21-23 6200B1Bromomethane ND 5.0 10/2/23 23:14 EEHg/L1.7 10/2/23SM21-23 6200B12-Butanone (MEK) ND 0.50 10/2/23 23:14 EEHg/L0.15 10/2/23SM21-23 6200B1n-Butylbenzene ND 0.50 10/2/23 23:14 EEHg/L0.13 10/2/23SM21-23 6200B1sec-Butylbenzene ND 0.50 10/2/23 23:14 EEHg/L0.14 10/2/23SM21-23 6200B1tert-Butylbenzene ND 1.0 10/2/23 23:14 EEHg/L0.16 10/2/23SM21-23 6200B1Carbon Tetrachloride ND 0.50 10/2/23 23:14 EEHg/L0.12 10/2/23SM21-23 6200B1Chlorobenzene ND 50 10/2/23 23:14 EEHg/L20 10/2/23SM21-23 6200B1Ethanol ND 0.50 10/2/23 23:14 EEHg/L0.20 10/2/23SM21-23 6200B1Chlorodibromomethane ND 0.50 10/2/23 23:14 EEHg/L0.34 10/2/23SM21-23 6200B1Chloroethane ND 0.50 10/2/23 23:14 EEHg/L0.14 10/2/23SM21-23 6200B1Chloroform ND 0.60 10/2/23 23:14 EEHg/L0.50 10/2/23SM21-23 6200B1Chloromethane ND 0.50 10/2/23 23:14 EEHg/L0.15 10/2/23SM21-23 6200B12-Chlorotoluene ND 0.50 10/2/23 23:14 EEHg/L0.15 10/2/23SM21-23 6200B14-Chlorotoluene ND 0.50 10/2/23 23:14 EEHg/L0.16 10/2/23SM21-23 6200B11,2-Dibromoethane (EDB) ND 0.50 10/2/23 23:14 EEHg/L0.13 10/2/23SM21-23 6200B11,2-Dichlorobenzene ND 0.50 10/2/23 23:14 EEHg/L0.14 10/2/23SM21-23 6200B11,3-Dichlorobenzene ND 0.50 10/2/23 23:14 EEHg/L0.13 10/2/23SM21-23 6200B11,4-Dichlorobenzene ND 0.50 10/2/23 23:14 EEHg/L0.16 10/2/23SM21-23 6200B1Dichlorodifluoromethane (Freon 12) ND 0.50 10/2/23 23:14 EEHg/L0.14 10/2/23SM21-23 6200B11,1-Dichloroethane ND 1.0 10/2/23 23:14 EEHg/L0.30 10/2/23SM21-23 6200B11,2-Dichloroethane ND 0.50 10/2/23 23:14 EEHg/L0.14 10/2/23SM21-23 6200B11,1-Dichloroethylene ND 0.50 10/2/23 23:14 EEHg/L0.14 10/2/23SM21-23 6200B1cis-1,2-Dichloroethylene ND 0.50 10/2/23 23:14 EEHg/L0.17 10/2/23SM21-23 6200B1trans-1,2-Dichloroethylene ND 0.50 10/2/23 23:14 EEHg/L0.19 10/2/23SM21-23 6200B11,2-Dichloropropane ND 0.50 10/2/23 23:14 EEHg/L0.12 10/2/23SM21-23 6200B11,3-Dichloropropane ND 0.50 10/2/23 23:14 EEHg/L0.35 10/2/23SM21-23 6200B12,2-Dichloropropane ND 0.50 10/2/23 23:14 EEHg/L0.15 10/2/23SM21-23 6200B11,1-Dichloropropene ND 0.50 10/2/23 23:14 EEHg/L0.16 10/2/23SM21-23 6200B1cis-1,3-Dichloropropene ND 0.50 10/2/23 23:14 EEHg/L0.14 10/2/23SM21-23 6200B1trans-1,3-Dichloropropene ND 0.50 10/2/23 23:14 EEHg/L0.20 10/2/23SM21-23 6200B1Diisopropyl Ether (DIPE) ND 0.50 10/2/23 23:14 EEHg/L0.22 10/2/23SM21-23 6200B1Ethylbenzene ND 5.0 10/2/23 23:14 EEHg/L1.2 10/2/23SM21-23 6200B12-Hexanone (MBK) ND 0.50 10/2/23 23:14 EEHg/L0.15 10/2/23SM21-23 6200B1Isopropylbenzene (Cumene) ND 0.50 10/2/23 23:14 EEHg/L0.13 10/2/23SM21-23 6200B1p-Isopropyltoluene (p-Cymene) ND 0.50 10/2/23 23:14 EEHg/L0.17 10/2/23SM21-23 6200B1Methyl tert-Butyl Ether (MTBE) ND 5.0 10/2/23 23:14 EEHg/L0.18 10/2/23SM21-23 6200B1Methylene Chloride ND 5.0 10/2/23 23:14 EEHg/L1.3 10/2/23SM21-23 6200B14-Methyl-2-pentanone (MIBK) 39 Spruce Street * East Longmeadow, MA 01028 * FAX 413/525-6405 * TEL. 413/525-2332 Date Received: 9/28/2023 Work Order: 23I3807Sample Description:Project Location: Rougemont, NC Sample ID: 23I3807-04 Field Sample #: FB Sample Matrix: Field Blank Sampled: 9/27/2023 12:50 AnalystAnalyzedDilutionFlag/QualRLResultsAnalyte Date/Time DL Units Date PreparedMethod Volatile Organic Compounds by GC/MS ND 0.50 10/2/23 23:14 EEHg/L0.38 10/2/23SM21-23 6200B1Naphthalene ND 0.50 10/2/23 23:14 EEHg/L0.12 10/2/23SM21-23 6200B1n-Propylbenzene ND 0.50 10/2/23 23:14 EEHg/L0.15 10/2/23SM21-23 6200B1Styrene ND 0.50 10/2/23 23:14 EEHg/L0.14 10/2/23SM21-23 6200B11,1,2,2-Tetrachloroethane ND 0.50 10/2/23 23:14 EEHg/L0.17 10/2/23SM21-23 6200B1Tetrachloroethylene ND 0.50 10/2/23 23:14 EEHg/L0.22 10/2/23SM21-23 6200B1Toluene ND 1.0 10/2/23 23:14 EEHg/L0.34 10/2/23SM21-23 6200B11,2,3-Trichlorobenzene ND 0.50 10/2/23 23:14 EEHg/L0.30 10/2/23SM21-23 6200B11,2,4-Trichlorobenzene ND 0.50 10/2/23 23:14 EEHg/L0.15 10/2/23SM21-23 6200B11,1,1-Trichloroethane ND 0.50 10/2/23 23:14 EEHg/L0.19 10/2/23SM21-23 6200B11,1,2-Trichloroethane ND 0.50 10/2/23 23:14 EEHg/L0.17 10/2/23SM21-23 6200B1Trichloroethylene ND 0.50 10/2/23 23:14 EEHg/L0.15 10/2/23SM21-23 6200B1Trichlorofluoromethane (Freon 11) ND 0.50 10/2/23 23:14 EEHg/L0.28 10/2/23SM21-23 6200B11,2,3-Trichloropropane ND 0.50 10/2/23 23:14 EEHg/L0.20 10/2/23SM21-23 6200B11,2,4-Trimethylbenzene ND 0.50 10/2/23 23:14 EEHg/L0.15 10/2/23SM21-23 6200B11,3,5-Trimethylbenzene ND 20 10/2/23 23:14 EEHg/L1.7 10/2/23SM21-23 6200B1Vinyl Acetate ND 0.50 10/2/23 23:14 EEHg/L0.24 10/2/23SM21-23 6200B1Vinyl Chloride ND 1.0 10/2/23 23:14 EEHg/L0.49 10/2/23SM21-23 6200B1m+p Xylene ND 0.50 10/2/23 23:14 EEHg/L0.24 10/2/23SM21-23 6200B1o-Xylene Surrogates % Recovery Recovery Limits Flag/Qual 1,2-Dichloroethane-d4 100 10/2/23 23:1470-130 Toluene-d8 104 10/2/23 23:1470-130 4-Bromofluorobenzene 104 10/2/23 23:1470-130 39 Spruce Street * East Longmeadow, MA 01028 * FAX 413/525-6405 * TEL. 413/525-2332 Date Received: 9/28/2023 Work Order: 23I3807Sample Description:Project Location: Rougemont, NC Sample ID: 23I3807-05 Field Sample #: Trip Blank Sample Matrix: Trip Blank Water Sampled: 9/27/2023 00:00 [TOC_2]23I3807-05[TOC] AnalystAnalyzedDilutionFlag/QualRLResultsAnalyte Date/Time DL Units Date PreparedMethod Volatile Organic Compounds by GC/MS ND 50 10/2/23 23:41 EEHg/L2.0 10/2/23SM21-23 6200B1Acetone ND 0.50 10/2/23 23:41 EEHg/L0.18 10/2/23SM21-23 6200B1Benzene ND 0.50 10/2/23 23:41 EEHg/L0.15 10/2/23SM21-23 6200B1Bromobenzene ND 0.50 10/2/23 23:41 EEHg/L0.28 10/2/23SM21-23 6200B1Bromochloromethane ND 0.50 10/2/23 23:41 EEHg/L0.16 10/2/23SM21-23 6200B1Bromodichloromethane ND 0.50 10/2/23 23:41 EEHg/L0.41 10/2/23SM21-23 6200B1Bromoform ND 2.0 10/2/23 23:41 EEHg/L1.3 10/2/23SM21-23 6200B1Bromomethane ND 5.0 10/2/23 23:41 EEHg/L1.7 10/2/23SM21-23 6200B12-Butanone (MEK) ND 0.50 10/2/23 23:41 EEHg/L0.15 10/2/23SM21-23 6200B1n-Butylbenzene ND 0.50 10/2/23 23:41 EEHg/L0.13 10/2/23SM21-23 6200B1sec-Butylbenzene ND 0.50 10/2/23 23:41 EEHg/L0.14 10/2/23SM21-23 6200B1tert-Butylbenzene ND 1.0 10/2/23 23:41 EEHg/L0.16 10/2/23SM21-23 6200B1Carbon Tetrachloride ND 0.50 10/2/23 23:41 EEHg/L0.12 10/2/23SM21-23 6200B1Chlorobenzene ND 50 10/2/23 23:41 EEHg/L20 10/2/23SM21-23 6200B1Ethanol ND 0.50 10/2/23 23:41 EEHg/L0.20 10/2/23SM21-23 6200B1Chlorodibromomethane ND 0.50 10/2/23 23:41 EEHg/L0.34 10/2/23SM21-23 6200B1Chloroethane ND 0.50 10/2/23 23:41 EEHg/L0.14 10/2/23SM21-23 6200B1Chloroform ND 0.60 10/2/23 23:41 EEHg/L0.50 10/2/23SM21-23 6200B1Chloromethane ND 0.50 10/2/23 23:41 EEHg/L0.15 10/2/23SM21-23 6200B12-Chlorotoluene ND 0.50 10/2/23 23:41 EEHg/L0.15 10/2/23SM21-23 6200B14-Chlorotoluene ND 0.50 10/2/23 23:41 EEHg/L0.16 10/2/23SM21-23 6200B11,2-Dibromoethane (EDB) ND 0.50 10/2/23 23:41 EEHg/L0.13 10/2/23SM21-23 6200B11,2-Dichlorobenzene ND 0.50 10/2/23 23:41 EEHg/L0.14 10/2/23SM21-23 6200B11,3-Dichlorobenzene ND 0.50 10/2/23 23:41 EEHg/L0.13 10/2/23SM21-23 6200B11,4-Dichlorobenzene ND 0.50 10/2/23 23:41 EEHg/L0.16 10/2/23SM21-23 6200B1Dichlorodifluoromethane (Freon 12) ND 0.50 10/2/23 23:41 EEHg/L0.14 10/2/23SM21-23 6200B11,1-Dichloroethane ND 1.0 10/2/23 23:41 EEHg/L0.30 10/2/23SM21-23 6200B11,2-Dichloroethane ND 0.50 10/2/23 23:41 EEHg/L0.14 10/2/23SM21-23 6200B11,1-Dichloroethylene ND 0.50 10/2/23 23:41 EEHg/L0.14 10/2/23SM21-23 6200B1cis-1,2-Dichloroethylene ND 0.50 10/2/23 23:41 EEHg/L0.17 10/2/23SM21-23 6200B1trans-1,2-Dichloroethylene ND 0.50 10/2/23 23:41 EEHg/L0.19 10/2/23SM21-23 6200B11,2-Dichloropropane ND 0.50 10/2/23 23:41 EEHg/L0.12 10/2/23SM21-23 6200B11,3-Dichloropropane ND 0.50 10/2/23 23:41 EEHg/L0.35 10/2/23SM21-23 6200B12,2-Dichloropropane ND 0.50 10/2/23 23:41 EEHg/L0.15 10/2/23SM21-23 6200B11,1-Dichloropropene ND 0.50 10/2/23 23:41 EEHg/L0.16 10/2/23SM21-23 6200B1cis-1,3-Dichloropropene ND 0.50 10/2/23 23:41 EEHg/L0.14 10/2/23SM21-23 6200B1trans-1,3-Dichloropropene ND 0.50 10/2/23 23:41 EEHg/L0.20 10/2/23SM21-23 6200B1Diisopropyl Ether (DIPE) ND 0.50 10/2/23 23:41 EEHg/L0.22 10/2/23SM21-23 6200B1Ethylbenzene ND 5.0 10/2/23 23:41 EEHg/L1.2 10/2/23SM21-23 6200B12-Hexanone (MBK) ND 0.50 10/2/23 23:41 EEHg/L0.15 10/2/23SM21-23 6200B1Isopropylbenzene (Cumene) ND 0.50 10/2/23 23:41 EEHg/L0.13 10/2/23SM21-23 6200B1p-Isopropyltoluene (p-Cymene) ND 0.50 10/2/23 23:41 EEHg/L0.17 10/2/23SM21-23 6200B1Methyl tert-Butyl Ether (MTBE) ND 5.0 10/2/23 23:41 EEHg/L0.18 10/2/23SM21-23 6200B1Methylene Chloride ND 5.0 10/2/23 23:41 EEHg/L1.3 10/2/23SM21-23 6200B14-Methyl-2-pentanone (MIBK) 39 Spruce Street * East Longmeadow, MA 01028 * FAX 413/525-6405 * TEL. 413/525-2332 Date Received: 9/28/2023 Work Order: 23I3807Sample Description:Project Location: Rougemont, NC Sample ID: 23I3807-05 Field Sample #: Trip Blank Sample Matrix: Trip Blank Water Sampled: 9/27/2023 00:00 AnalystAnalyzedDilutionFlag/QualRLResultsAnalyte Date/Time DL Units Date PreparedMethod Volatile Organic Compounds by GC/MS ND 0.50 10/2/23 23:41 EEHg/L0.38 10/2/23SM21-23 6200B1Naphthalene ND 0.50 10/2/23 23:41 EEHg/L0.12 10/2/23SM21-23 6200B1n-Propylbenzene ND 0.50 10/2/23 23:41 EEHg/L0.15 10/2/23SM21-23 6200B1Styrene ND 0.50 10/2/23 23:41 EEHg/L0.14 10/2/23SM21-23 6200B11,1,2,2-Tetrachloroethane ND 0.50 10/2/23 23:41 EEHg/L0.17 10/2/23SM21-23 6200B1Tetrachloroethylene ND 0.50 10/2/23 23:41 EEHg/L0.22 10/2/23SM21-23 6200B1Toluene ND 1.0 10/2/23 23:41 EEHg/L0.34 10/2/23SM21-23 6200B11,2,3-Trichlorobenzene ND 0.50 10/2/23 23:41 EEHg/L0.30 10/2/23SM21-23 6200B11,2,4-Trichlorobenzene ND 0.50 10/2/23 23:41 EEHg/L0.15 10/2/23SM21-23 6200B11,1,1-Trichloroethane ND 0.50 10/2/23 23:41 EEHg/L0.19 10/2/23SM21-23 6200B11,1,2-Trichloroethane ND 0.50 10/2/23 23:41 EEHg/L0.17 10/2/23SM21-23 6200B1Trichloroethylene ND 0.50 10/2/23 23:41 EEHg/L0.15 10/2/23SM21-23 6200B1Trichlorofluoromethane (Freon 11) ND 0.50 10/2/23 23:41 EEHg/L0.28 10/2/23SM21-23 6200B11,2,3-Trichloropropane ND 0.50 10/2/23 23:41 EEHg/L0.20 10/2/23SM21-23 6200B11,2,4-Trimethylbenzene ND 0.50 10/2/23 23:41 EEHg/L0.15 10/2/23SM21-23 6200B11,3,5-Trimethylbenzene ND 20 10/2/23 23:41 EEHg/L1.7 10/2/23SM21-23 6200B1Vinyl Acetate ND 0.50 10/2/23 23:41 EEHg/L0.24 10/2/23SM21-23 6200B1Vinyl Chloride ND 1.0 10/2/23 23:41 EEHg/L0.49 10/2/23SM21-23 6200B1m+p Xylene ND 0.50 10/2/23 23:41 EEHg/L0.24 10/2/23SM21-23 6200B1o-Xylene Surrogates % Recovery Recovery Limits Flag/Qual 1,2-Dichloroethane-d4 99.4 10/2/23 23:4170-130 Toluene-d8 104 10/2/23 23:4170-130 4-Bromofluorobenzene 104 10/2/23 23:4170-130 39 Spruce Street * East Longmeadow, MA 01028 * FAX 413/525-6405 * TEL. 413/525-2332 Sample Extraction Data Prep Method:SW-846 5030B Analytical Method:SM21-23 6200B Lab Number [Field ID]Batch DateInitial [mL]Final [mL] B353599 10/02/235 5.0023I3807-01 [MW-01] B353599 10/02/230.25 5.0023I3807-01RE1 [MW-01] B353599 10/02/232.5 5.0023I3807-02 [MW-02] B353599 10/02/235 5.0023I3807-03 [MW-03] B353599 10/02/235 5.0023I3807-04 [FB] B353599 10/02/235 5.0023I3807-05 [Trip Blank] [TOC_1]Sample Preparation Information[TOC] 39 Spruce Street * East Longmeadow, MA 01028 * FAX 413/525-6405 * TEL. 413/525-2332 Result Limit Reporting Units Level Spike Result Source %REC %REC Limits RPD RPD Limit Notes Analyte Volatile Organic Compounds by GC/MS - Quality Control QUALITY CONTROL [TOC_2]Volatile Organic Compounds by GC/MS[TOC] Batch B353599 - SW-846 5030B [TOC_3]B353599[TOC] Blank (B353599-BLK1) Prepared & Analyzed: 10/02/23 Acetone g/L50ND Benzene g/L0.50ND Bromobenzene g/L0.50ND Bromochloromethane g/L0.50ND Bromodichloromethane g/L0.50ND Bromoform g/L0.50ND Bromomethane g/L2.0ND 2-Butanone (MEK)g/L5.0ND n-Butylbenzene g/L0.50ND sec-Butylbenzene g/L0.50ND tert-Butylbenzene g/L0.50ND Carbon Tetrachloride g/L0.50ND Chlorobenzene g/L0.50ND Ethanol g/L50ND Chlorodibromomethane g/L0.50ND Chloroethane g/L0.50ND Chloroform g/L0.50ND Chloromethane g/L0.60ND 2-Chlorotoluene g/L0.50ND 4-Chlorotoluene g/L0.50ND 1,2-Dibromoethane (EDB)g/L0.50ND 1,2-Dichlorobenzene g/L0.50ND 1,3-Dichlorobenzene g/L0.50ND 1,4-Dichlorobenzene g/L0.50ND Dichlorodifluoromethane (Freon 12)g/L0.50ND 1,1-Dichloroethane g/L0.50ND 1,2-Dichloroethane g/L0.50ND 1,1-Dichloroethylene g/L0.50ND cis-1,2-Dichloroethylene g/L0.50ND trans-1,2-Dichloroethylene g/L0.50ND 1,2-Dichloropropane g/L0.50ND 1,3-Dichloropropane g/L0.50ND 2,2-Dichloropropane g/L0.50ND 1,1-Dichloropropene g/L0.50ND cis-1,3-Dichloropropene g/L0.50ND trans-1,3-Dichloropropene g/L0.50ND Diisopropyl Ether (DIPE)g/L0.50ND Ethylbenzene g/L0.50ND 2-Hexanone (MBK)g/L5.0ND Isopropylbenzene (Cumene)g/L0.50ND p-Isopropyltoluene (p-Cymene)g/L0.50ND Methyl tert-Butyl Ether (MTBE)g/L0.50ND Methylene Chloride g/L5.0ND 4-Methyl-2-pentanone (MIBK)g/L5.0ND Naphthalene g/L0.50ND n-Propylbenzene g/L0.50ND Styrene g/L0.50ND 1,1,2,2-Tetrachloroethane g/L0.50ND Tetrachloroethylene g/L0.50ND Toluene g/L0.50ND 1,2,3-Trichlorobenzene g/L1.0ND 1,2,4-Trichlorobenzene g/L0.50ND [TOC_1]QC Data[TOC] 39 Spruce Street * East Longmeadow, MA 01028 * FAX 413/525-6405 * TEL. 413/525-2332 Result Limit Reporting Units Level Spike Result Source %REC %REC Limits RPD RPD Limit Notes Analyte Volatile Organic Compounds by GC/MS - Quality Control QUALITY CONTROL Batch B353599 - SW-846 5030B Blank (B353599-BLK1) Prepared & Analyzed: 10/02/23 1,1,1-Trichloroethane g/L0.50ND 1,1,2-Trichloroethane g/L0.50ND Trichloroethylene g/L0.50ND Trichlorofluoromethane (Freon 11)g/L0.50ND 1,2,3-Trichloropropane g/L0.50ND 1,2,4-Trimethylbenzene g/L0.50ND 1,3,5-Trimethylbenzene g/L0.50ND Vinyl Acetate g/L20ND Vinyl Chloride g/L0.50ND m+p Xylene g/L1.0ND o-Xylene g/L0.50ND g/L 25.0 70-130Surrogate: 1,2-Dichloroethane-d4 10025.1 g/L 25.0 70-130Surrogate: Toluene-d8 10426.0 g/L 25.0 70-130Surrogate: 4-Bromofluorobenzene 10325.7 LCS (B353599-BS1) Prepared & Analyzed: 10/02/23 Acetone g/L50 100 70-130103103 Benzene g/L0.50 10.0 70-13010510.5 Bromobenzene g/L0.50 10.0 70-13010010.0 Bromochloromethane g/L0.50 10.0 70-13011311.3 Bromodichloromethane g/L0.50 10.0 70-13010510.5 Bromoform g/L0.50 10.0 70-13010110.1 Bromomethane g/L2.0 10.0 60-14010510.5 2-Butanone (MEK)g/L5.0 100 70-130111111 n-Butylbenzene g/L0.50 10.0 70-13088.48.84 sec-Butylbenzene g/L0.50 10.0 70-13087.58.75 tert-Butylbenzene g/L0.50 10.0 70-13085.68.56 Carbon Tetrachloride g/L0.50 10.0 70-13011611.6 Chlorobenzene g/L0.50 10.0 70-13099.09.90 Ethanol g/L50 100 70-13076.376.3 Chlorodibromomethane g/L0.50 10.0 70-13010710.7 Chloroethane g/L0.50 10.0 60-14011511.5 Chloroform g/L0.50 10.0 70-13010110.1 Chloromethane g/L0.60 10.0 60-14066.46.64 2-Chlorotoluene g/L0.50 10.0 70-13090.99.09 4-Chlorotoluene g/L0.50 10.0 70-13010210.2 1,2-Dibromoethane (EDB)g/L0.50 10.0 70-13010910.9 1,2-Dichlorobenzene g/L0.50 10.0 70-13092.99.29 1,3-Dichlorobenzene g/L0.50 10.0 70-13091.69.16 1,4-Dichlorobenzene g/L0.50 10.0 70-13089.68.96 Dichlorodifluoromethane (Freon 12)g/L0.50 10.0 60-14090.49.04 1,1-Dichloroethane g/L0.50 10.0 70-13099.59.95 1,2-Dichloroethane g/L0.50 10.0 70-13093.09.30 1,1-Dichloroethylene g/L0.50 10.0 70-13086.88.68 cis-1,2-Dichloroethylene g/L0.50 10.0 70-13010110.1 trans-1,2-Dichloroethylene g/L0.50 10.0 70-13096.49.64 1,2-Dichloropropane g/L0.50 10.0 70-13010310.3 1,3-Dichloropropane g/L0.50 10.0 70-13010910.9 2,2-Dichloropropane g/L0.50 10.0 70-13092.19.21 1,1-Dichloropropene g/L0.50 10.0 70-13098.79.87 cis-1,3-Dichloropropene g/L0.50 10.0 70-13010210.2 trans-1,3-Dichloropropene g/L0.50 10.0 70-13010210.2 39 Spruce Street * East Longmeadow, MA 01028 * FAX 413/525-6405 * TEL. 413/525-2332 Result Limit Reporting Units Level Spike Result Source %REC %REC Limits RPD RPD Limit Notes Analyte Volatile Organic Compounds by GC/MS - Quality Control QUALITY CONTROL Batch B353599 - SW-846 5030B LCS (B353599-BS1) Prepared & Analyzed: 10/02/23 Diisopropyl Ether (DIPE)g/L0.50 10.0 70-13010610.6 Ethylbenzene g/L0.50 10.0 70-13094.29.42 2-Hexanone (MBK)g/L5.0 100 70-130110110 Isopropylbenzene (Cumene)g/L0.50 10.0 70-13097.79.77 p-Isopropyltoluene (p-Cymene)g/L0.50 10.0 70-13088.58.85 Methyl tert-Butyl Ether (MTBE)g/L0.50 10.0 70-13010710.7 Methylene Chloride g/L5.0 10.0 70-13092.79.27 4-Methyl-2-pentanone (MIBK)g/L5.0 100 70-130107107 Naphthalene g/L0.50 10.0 70-13091.89.18 n-Propylbenzene g/L0.50 10.0 70-13097.29.72 Styrene g/L0.50 10.0 70-13098.69.86 1,1,2,2-Tetrachloroethane g/L0.50 10.0 70-13098.99.89 Tetrachloroethylene g/L0.50 10.0 70-13099.49.94 Toluene g/L0.50 10.0 70-13099.19.91 1,2,3-Trichlorobenzene g/L1.0 10.0 70-13091.19.11 1,2,4-Trichlorobenzene g/L0.50 10.0 70-13086.58.65 1,1,1-Trichloroethane g/L0.50 10.0 70-13099.19.91 1,1,2-Trichloroethane g/L0.50 10.0 70-13010910.9 Trichloroethylene g/L0.50 10.0 70-13010010.0 Trichlorofluoromethane (Freon 11)g/L0.50 10.0 70-13094.79.47 1,2,3-Trichloropropane g/L0.50 10.0 70-13010610.6 1,2,4-Trimethylbenzene g/L0.50 10.0 70-13087.88.78 1,3,5-Trimethylbenzene g/L0.50 10.0 70-13097.59.75 Vinyl Acetate g/L20 100 70-13074.874.8 Vinyl Chloride g/L0.50 10.0 60-14077.57.75 m+p Xylene g/L1.0 20.0 70-13098.419.7 o-Xylene g/L0.50 10.0 70-13010210.2 g/L 25.0 70-130Surrogate: 1,2-Dichloroethane-d4 10025.0 g/L 25.0 70-130Surrogate: Toluene-d8 10325.7 g/L 25.0 70-130Surrogate: 4-Bromofluorobenzene 10726.7 LCS Dup (B353599-BSD1) Prepared & Analyzed: 10/02/23 Acetone g/L50 100 2570-13098.9 3.6998.9 Benzene g/L0.50 10.0 2570-130110 4.7511.0 Bromobenzene g/L0.50 10.0 2570-130105 4.7710.5 Bromochloromethane g/L0.50 10.0 2570-130117 3.3111.7 Bromodichloromethane g/L0.50 10.0 2570-130108 3.3710.8 Bromoform g/L0.50 10.0 2570-130103 1.6710.3 Bromomethane g/L2.0 10.0 2560-140108 2.6410.8 2-Butanone (MEK)g/L5.0 100 2570-130112 0.701112 n-Butylbenzene g/L0.50 10.0 2570-13089.4 1.128.94 sec-Butylbenzene g/L0.50 10.0 2570-13090.9 3.819.09 tert-Butylbenzene g/L0.50 10.0 2570-13087.1 1.748.71 Carbon Tetrachloride g/L0.50 10.0 2570-130120 2.8012.0 Chlorobenzene g/L0.50 10.0 2570-130102 2.6910.2 Ethanol g/L50 100 2570-13080.9 5.8980.9 Chlorodibromomethane g/L0.50 10.0 2570-130114 6.0611.4 Chloroethane g/L0.50 10.0 2560-140118 2.6511.8 Chloroform g/L0.50 10.0 2570-130105 3.5010.5 Chloromethane g/L0.60 10.0 2560-14075.1 12.37.51 2-Chlorotoluene g/L0.50 10.0 2570-13095.3 4.739.53 4-Chlorotoluene g/L0.50 10.0 2570-130106 3.8510.6 39 Spruce Street * East Longmeadow, MA 01028 * FAX 413/525-6405 * TEL. 413/525-2332 Result Limit Reporting Units Level Spike Result Source %REC %REC Limits RPD RPD Limit Notes Analyte Volatile Organic Compounds by GC/MS - Quality Control QUALITY CONTROL Batch B353599 - SW-846 5030B LCS Dup (B353599-BSD1) Prepared & Analyzed: 10/02/23 1,2-Dibromoethane (EDB)g/L0.50 10.0 2570-130113 3.2411.3 1,2-Dichlorobenzene g/L0.50 10.0 2570-13092.7 0.2169.27 1,3-Dichlorobenzene g/L0.50 10.0 2570-13095.2 3.859.52 1,4-Dichlorobenzene g/L0.50 10.0 2570-13092.7 3.409.27 Dichlorodifluoromethane (Freon 12)g/L0.50 10.0 2560-14092.8 2.629.28 1,1-Dichloroethane g/L0.50 10.0 2570-130104 4.6110.4 1,2-Dichloroethane g/L0.50 10.0 2570-13094.7 1.819.47 1,1-Dichloroethylene g/L0.50 10.0 2570-13088.5 1.948.85 cis-1,2-Dichloroethylene g/L0.50 10.0 2570-130104 3.4210.4 trans-1,2-Dichloroethylene g/L0.50 10.0 2570-13097.0 0.6209.70 1,2-Dichloropropane g/L0.50 10.0 2570-130107 3.7110.7 1,3-Dichloropropane g/L0.50 10.0 2570-130111 1.2711.1 2,2-Dichloropropane g/L0.50 10.0 2570-13094.7 2.789.47 1,1-Dichloropropene g/L0.50 10.0 2570-130102 3.5810.2 cis-1,3-Dichloropropene g/L0.50 10.0 2570-130108 5.8210.8 trans-1,3-Dichloropropene g/L0.50 10.0 2570-130106 3.8410.6 Diisopropyl Ether (DIPE)g/L0.50 10.0 2570-130108 1.8810.8 Ethylbenzene g/L0.50 10.0 2570-13095.9 1.799.59 2-Hexanone (MBK)g/L5.0 100 2570-130109 0.830109 Isopropylbenzene (Cumene)g/L0.50 10.0 2570-130102 4.0110.2 p-Isopropyltoluene (p-Cymene)g/L0.50 10.0 2570-13091.4 3.229.14 Methyl tert-Butyl Ether (MTBE)g/L0.50 10.0 2570-130107 0.74810.7 Methylene Chloride g/L5.0 10.0 2570-13095.7 3.189.57 4-Methyl-2-pentanone (MIBK)g/L5.0 100 2570-130111 3.05111 Naphthalene g/L0.50 10.0 2570-13094.1 2.479.41 n-Propylbenzene g/L0.50 10.0 2570-130102 4.5210.2 Styrene g/L0.50 10.0 2570-130102 3.1910.2 1,1,2,2-Tetrachloroethane g/L0.50 10.0 2570-130103 4.3510.3 Tetrachloroethylene g/L0.50 10.0 2570-130105 5.7610.5 Toluene g/L0.50 10.0 2570-130104 4.4410.4 1,2,3-Trichlorobenzene g/L1.0 10.0 2570-13095.9 5.139.59 1,2,4-Trichlorobenzene g/L0.50 10.0 2570-13089.6 3.528.96 1,1,1-Trichloroethane g/L0.50 10.0 2570-130103 4.1510.3 1,1,2-Trichloroethane g/L0.50 10.0 2570-130114 3.9511.4 Trichloroethylene g/L0.50 10.0 2570-130110 9.3111.0 Trichlorofluoromethane (Freon 11)g/L0.50 10.0 2570-13097.9 3.329.79 1,2,3-Trichloropropane g/L0.50 10.0 2570-130107 0.93810.7 1,2,4-Trimethylbenzene g/L0.50 10.0 2570-13090.5 3.039.05 1,3,5-Trimethylbenzene g/L0.50 10.0 2570-130102 4.8010.2 Vinyl Acetate g/L20 100 2570-13082.3 9.5582.3 Vinyl Chloride g/L0.50 10.0 2560-14075.4 2.757.54 m+p Xylene g/L1.0 20.0 2570-130101 2.5620.2 o-Xylene g/L0.50 10.0 2570-130104 2.6210.4 g/L 25.0 70-130Surrogate: 1,2-Dichloroethane-d4 10225.4 g/L 25.0 70-130Surrogate: Toluene-d8 10426.1 g/L 25.0 70-130Surrogate: 4-Bromofluorobenzene 10927.3 39 Spruce Street * East Longmeadow, MA 01028 * FAX 413/525-6405 * TEL. 413/525-2332 FLAG/QUALIFIER SUMMARY *QC result is outside of established limits. Wide recovery limits established for difficult compound. Wide RPD limits established for difficult compound. #Data exceeded client recommended or regulatory level Percent recoveries and relative percent differences (RPDs) are determined by the software using values in the calculation which have not been rounded. No results have been blank subtracted unless specified in the case narrative section. RL Reporting Limit is at the level of quantitation (LOQ) DL Detection Limit is the lower limit of detection determined by the MDL study MCL Maximum Contaminant Level ND Not Detected Detected but below the Reporting Limit (lowest calibration standard); therefore, result is an estimated concentration (CLP J-Flag). J Elevated reporting limit due to high concentration of target compounds.RL-11 [TOC_1]Flag/Qualifier Summary[TOC] 39 Spruce Street * East Longmeadow, MA 01028 * FAX 413/525-6405 * TEL. 413/525-2332 CertificationsAnalyte CERTIFICATIONS Certified Analyses included in this Report SM21-23 6200B in Water NCAcetone NCBenzene NCBromobenzene NCBromochloromethane NCBromodichloromethane NCBromoform NCBromomethane NC2-Butanone (MEK) NCn-Butylbenzene NCsec-Butylbenzene NCtert-Butylbenzene NCCarbon Tetrachloride NCChlorobenzene NCEthanol NCChlorodibromomethane NCChloroethane NCChloroform NCChloromethane NC2-Chlorotoluene NC4-Chlorotoluene NC1,2-Dibromoethane (EDB) NC1,2-Dichlorobenzene NC1,3-Dichlorobenzene NC1,4-Dichlorobenzene NCDichlorodifluoromethane (Freon 12) NC1,1-Dichloroethane NC1,2-Dichloroethane NC1,1-Dichloroethylene NCcis-1,2-Dichloroethylene NCtrans-1,2-Dichloroethylene NC1,2-Dichloropropane NC1,3-Dichloropropane NC2,2-Dichloropropane NC1,1-Dichloropropene NCcis-1,3-Dichloropropene NCtrans-1,3-Dichloropropene NCDiisopropyl Ether (DIPE) NCEthylbenzene NC2-Hexanone (MBK) NCIsopropylbenzene (Cumene) NCp-Isopropyltoluene (p-Cymene) NCMethyl tert-Butyl Ether (MTBE) NCMethylene Chloride NC4-Methyl-2-pentanone (MIBK) NCNaphthalene NCn-Propylbenzene NCStyrene [TOC_1]Certifications[TOC] 39 Spruce Street * East Longmeadow, MA 01028 * FAX 413/525-6405 * TEL. 413/525-2332 CertificationsAnalyte CERTIFICATIONS Certified Analyses included in this Report SM21-23 6200B in Water NC1,1,2,2-Tetrachloroethane NCTetrachloroethylene NCToluene NC1,2,3-Trichlorobenzene NC1,2,4-Trichlorobenzene NC1,1,1-Trichloroethane NC1,1,2-Trichloroethane NCTrichloroethylene NCTrichlorofluoromethane (Freon 11) NC1,2,3-Trichloropropane NC1,2,4-Trimethylbenzene NC1,3,5-Trimethylbenzene NCVinyl Acetate NCVinyl Chloride NCm+p Xylene NCo-Xylene Con-Test, a Pace Environmental Laboratory, operates under the following certifications and accreditations: Code Description Number Expires 652North Carolina Div. of Water QualityNC 12/31/2023