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HomeMy WebLinkAbout1107_Buncombe_MSWLF_CDLF_Oct22GW_FID1792141_20230501DEN R USE ONLY ❑Paper Report ❑Electronic Data - Email CD (data loaded: Yes / No Doc/Event #: NC DENR I IEnvironmental Monitoring Division of Waste Management - Solid Waste Reporting Form Notice: This form and any information attached to it are "Public Records" as defined in NC General Statute 132-1. As such, these documents are available for inspection and examination by any person upon request (NC General Statute 132-6). Instructions: Prepare one form for each individually monitored unit. Please type or print legibly. Attach a notification table with values that attain or exceed NC 2L groundwater standards or NC 2B surface water standards. The notification must include a preliminary analysis of the cause and significance of each value. (e.g. naturally occurring, off -site source, pre-existing condition, etc.). Attach a notification table of any groundwater or surface water values that equal or exceed the reporting limits. Attach a notification table of any methane gas values that attain or exceed explosive gas levels. This includes any structures on or nearby the facility (NCAC 13B .1629 (4)(a)(i). Send the original signed and sealed form, any tables, and Electronic Data Deliverable to: Compliance Unit, NCDENR-DWM, Solid Waste Section, 1646 Mail Service Center, Raleigh, NC 27699-1646. Solid Waste Monitoring Data Submittal Information Name of entity submitting data (laboratory, consultant, facility owner): Bunnell-Lammons Engineering, Inc. (consultant) Contact for questions about data formatting. Include data preparer's name, telephone number and E-mail address: Name: Andrew W. Alexander. PG RSM Phone: (864)288-1265 E-mail: andy.alexander(cDblecorp.com NC Landfill Rule: Actual sampling dates (e.g., Facility name: Facility Address: Facility Permit # (.0500 or .1600) October 20-24, 2006) 1107-MSWLF 81 Panther Branch Road -1996 .1600 October 17-19, 2022 Buncombe County Landfill Alexander, NC, 28701 1107-CDLF November 1, 2022 -1998 0 •0500 Environmental Status: (Check all that apply) ❑ Initial/Background Monitoring ❑X Detection Monitoring ❑ Assessment Monitoring Corrective Action of data submitted: (Check all that apply) Groundwater monitoring data from monitoring wells ❑ Groundwater monitoring data from private water supply wells ❑ Leachate monitoring data El water monitoring data Methane gas monitoring data Corrective action data (specify) Other(specify) Notification attached? No. No groundwater or surface water standards were exceeded. X Yes, a notification of values exceeding a groundwater or surface water standard is attached. It includes a list of groundwater and surface water monitoring points, dates, analytical values, NC 2L groundwater standard, NC 2B surface water standard or NC Solid Waste GWPS and preliminary analysis of the cause and significance of any concentration. ❑ Yes, a notification of values exceeding an explosive methane gas limit is attached. It includes the methane monitoring points, dates, sample values and explosive methane gas limits. Certification To the best of my knowledge, the information reported and statements made on this data submittal and attachments are true and correct. Furthermore, I have attached complete notification of any sampling values meeting or exceeding groundwater standards or explosive gas levels, and a preliminary analysis of the cause and significance of concentrations exceeding groundwater standards. I am aware that there are significant penalties for making any false statement, representation, or certification including the possibility of a fine and imprisonment. Andrew W. Alexander, PG RSM Consultant Hydrogeologist (864) 288-1265 Facility Representative Name (Print) Title (Area Code) Telephone Number 2023-05-01 Signature Date 6004 Ponders Court, Greenville, SC, 29615 Facility Representative Address C-284 & C-1538 NC PE Firm License Number (if applicable effective May 1, 2009) Revised 6/2009 Affix NC Licensed/ Professional Geologist Seal • ���1111 CAR i NSF'titi 9 1 5 M' W A1.E�'.�`• �fIf1111111101 WATER QUALITY REPORT 2nd SEMI-ANNUAL EVENT 2022 BUNCOMBE COUNTY LANDFILL ALEXANDER, NORTH CAROLINA Permit No. 1107-MSWLF-1996 Permit No. 1107-CDLF-1998 Prepared For: Buncombe County BLE Project Number J22-9378-31 May 1, 2023 ''����y�irrrrr�r�••f• Z k CAgp •., f 5 ¢ - IDLO BLE North Carolina Business Licenses C-284 & C-1538 it IM IM 11UNNELL LAMMEINS ENGINEERmr. 6004 Ponders Court I Greenville, 5C 29515 t. 864.288.1265 AI 854.288,433D 0 Info@hl2corp.com BLECQRP.CQM � CANNONS ENGINEERING May 1, 2023 Buncombe County Solid Waste Department 81 Panther Branch Road Alexander, North Carolina 28701 Attention: Ms. Kristy Smith Subject: Water Quality Report 2"d Semi -Annual Event 2022 Buncombe County Landfill Alexander, North Carolina Permit Nos. 1107-MSWLF-1996 & 1107-CDLF-1998 BLE Project Number J22-9378-31 Dear Ms. Smith: Pursuant to authorization of Bunnell-Lammons Engineering, Inc. (BLE) Proposal Number J22-9378-31, dated July 6, 2022, BLE has prepared this water quality report for the 2nd semi-annual sampling event of 2022 at the Buncombe County Landfill. Consistent with the North Carolina Division of Waste Management (DWM) — Solid Waste Section (SWS) approved monitoring program, sampling and analysis were conducted twice in 2022. This report contains the information required by the SWS to document the sampling and analysis activities for the second event of 2022 in the State's permanent project record. Sincerely, BUNNELL LAMMONs ENGINEERING INC. ­W9.0, Thomas A. O'Shea, P.G. Project Geologist Registered, NC # 2830 cc: Ms. Jaclynne Drummond — DWM-ARO AC/ Andrew W. Ale/der,.G., RSM Consultant Hydrogeologist Registered, NC #1475 '6004 Panders Court, Greenvll€e, SC 29615 1,864,288.1265 r,-#864,288.4430 info@hlecorp,com BLECORP.COM 1s 1m 1i Water Quality Report — 2nd Semi -Annual Event 2022 May 1, 2023 Buncombe County Landfill —Alexander, North Carolina BLE Project No. J22-9378-31 TABLE OF CONTENTS 1.0 PROJECT INFORMATION........................................................................................................1 2.0 FIELD ACTIVITIES, SAMPLING, AND ANALYSIS.............................................................1 3.0 GROUNDWATER FLOW........................................................................................................... 2 4.0 RESULTS....................................................................................................................................... 2 4.1 Groundwater.................................................................................................................................... 2 4.2 Surface Water.................................................................................................................................. 2 4.3 Leak Detectors and Leachate Samples............................................................................................. 3 5.0 CONCLUSIONS AND RECOMMENDATIONS....................................................................... 3 6.0 QUALIFICATIONS OF REPORT.............................................................................................. 3 7.0 CLOSING.......................................................................................................................................3 Tables Table 1 SWS Approved Sampling Matrix Table 2 Well Construction and Monitoring Well Data Table 3 Range of Groundwater Flow Velocities Table 4 Groundwater VOCs Table 5 Groundwater Field Parameters, Geochemical Parameters, and Total Metals Table 6 Surface Water VOCs Table 7 Surface Water Field Parameters and Total Metals Table 8 Leak Detector and Leachate VOCs Table 9 Leak Detector and Leachate Field Parameters and Total Metals Figures Figure 1 Site Location Map Figure 2 Groundwater Elevation Contour Map — October 17, 2022 Appendices Appendix A Field Sampling Logs — Pace Analytical Services, LLC. Appendix B Laboratory Analytical Data — Pace Analytical Services, LLC. iofi 1s 1m 1i Water Quality Report — 2nd Semi -Annual Event 2022 May 1, 2023 Buncombe County Landfill —Alexander, North Carolina BLE Project No. J22-9378-31 1.0 PROJECT INFORMATION The subject 654-acre landfill site is located in Buncombe County, North Carolina, approximately nine miles north of the city of Asheville with a physical address of 81 Panther Branch Road in Alexander, North Carolina (Figure 1). Buncombe County owns and operates a Subtitle D MSWLF which includes Cell 1 through Cell 7 and a CDLF consisting of Phase 1 through Phase 7. Currently Cell 6 of the MSWLF and Phase 7 of the CDLF are the active waste units. MSWLF Cells 8 through 10 are planned (but not permitted) for future expansion. A Water Quality Monitoring Plan (WQMP) was finalized by BLE and submitted to the North Carolina Solid Waste Section (SWS). The WQMP was approved on April 16, 2021 (FID 1576846). The facility requires semi-annual groundwater, surface water, and leachate monitoring and reporting in accordance with the WQMP. Semi-annual sampling is typically conducted each April and October and those events are designated "Spring" and "Fall," respectively. This report represents the 2nd semi-annual (Fall) sampling event of 2022. The existing groundwater monitoring network for the Buncombe County Landfill consists of two (2) upgradient (background) wells (MW-1 and MW-1D) and twenty-four (24) downgradient (compliance) wells (MW-2, MW-2D, MW-3R, MW-4, MW-41), MW-5, MW-51), MW-6, MW-7, MW-8, MW-8D, MW-10, MW-IOD, MW-11, MW-11D, MW-12, MW-12D, MW-13, MW-13D, MW-14, MW-14D, MW-17R, MW- 17DR, and MW-18). Wells MW-17 and MW-17D were abandoned September 14, 2020 and replaced by MW-17R and MW-17DR, respectively (Figure 2). Wells MW-15 and MW-15D were removed as compliance points and replaced by MW-18 as approved by the SWS on August 3, 2021(FID 1595460). The MW-15/MW- 15D well pair remains in place for the collection of water levels only. The current SWS approved sampling matrix is included as Table 1. In accordance with Rule .0602 and Rule .0544(c), eight (8) surface water monitoring locations have been established for the facility to monitor surface water quality surrounding the existing waste footprint (Table 1). The existing surface water locations consist of one (1) upstream (background) point (SW-1) and seven (7) downstream (compliance) points (SW-2 through SW-8). In accordance with Rule .1626(12)(c), eight (8) active leak detector and leachate sampling locations have been established for the facility (Table 1). The locations include six (6) existing leak detection sampling locations associated with each MSWLF cell (Cells 1 through 6) designated LD-1 through LD-6, one (1) leachate leak detection sampling location near the leachate pond designated Leachate LD, and the Leachate Pond itself. 2.0 FIELD ACTIVITIES, SAMPLING, AND ANALYSIS Groundwater, surface water, and leachate samples were collected for the 2nd semi-annual sampling event by personnel from Pace Analytical Services, LLC. (Pace) of Asheville, North Carolina between October 17-19, 2022 and on November 1, 2022. Groundwater samples were collected from the 26 monitoring wells as specified on Table 1. Seven (7) of the eight (8) surface water locations were sampled during the event; SW- 7 was dry and could not be sampled. Additionally, the seven (7) leak detection and one (1) leachate pond locations were sampled. The groundwater, surface water, and leachate samples were delivered and analyzed in Pace's Columbia, South Carolina laboratory for the constituents in the approved matrix (Table 1). The field parameters of dissolved oxygen, pH, redox potential, specific conductance, turbidity, and temperature were measured in the field by 1 of 3 1s 1M 1i Water Quality Report — 2nd Semi -Annual Event 2022 Buncombe County Landfill —Alexander, North Carolina May 1, 2023 BLE Project No. J22-9378-31 Pace. A copy of the Pace field sampling logs is included in Appendix A. A copy of the laboratory analytical data are included in Appendix B. 3.0 GROUNDWATER FLOW The water level data collected during the sampling event on October 17, 2022 are presented in Table 2. Groundwater flow velocity estimates are presented in Table 3. A groundwater elevation contour map with generalized groundwater flow directions is presented in Figure 2. Please note that water level data were collected on November 1, 2022 at monitoring wells MW-1, MW-2, MW-12, MW-14, and MW-17DR; these measurements were not used to produce the groundwater elevation contour map (Figure 2). 4.0 RESULTS 4.1 Groundwater The results of the groundwater field and laboratory analyses are summarized in Table 4 and Table 5 and the laboratory analytical data are included in Appendix B. Please refer to Table 4 and Table 5 for a summary of which groundwater constituents exceeded North Carolina Groundwater Quality Standards (NC2L) maximum contaminant levels' (MCLs) or a SWS approved Alternate Groundwater Protection Standard2 (AGWPS). Field parameters measured in the groundwater included pH, specific conductance, turbidity, and temperature. The field parameter of pH was below its NC2L standard in fifteen (15) wells. However, previous semi-annual reports for the subject site indicate that pH frequently varies between values both below and within the NC2L standards in the majority of the wells on site. No other field parameters were outside their NC2L standard limits for groundwater if established. 4.2 Surface Water The results of the surface water field and laboratory analyses are summarized in Table 6 and Table 7 and the laboratory analytical data are included in Appendix B. Please refer to Table 6 and Table 7 for a summary of which surface water constituents exceeded their established North Carolina Surface Water Quality Standards (NC213)3 standard limits. Field parameters measured in the surface water included dissolved oxygen, pH, redox potential, specific conductance, turbidity, and temperature. The field parameter of turbidity exceeded its NC213 standards at three (3) locations. No other field parameters exceeded their NC2B standard for surface water if established. 'North Carolina Department of Environmental Quality, Classifications of Water Quality Standards, Section 15A NCAC 2L.0202, April 1, 2022. z SWS letter titled Alternate Source Demonstration Addendum dated June 5, 2018 (FID 1213927) ' North Carolina Department of Environmental Quality, Surface Waters and Wetlands Standards, Section 15A NCAC 02B workbook dated July 26, 2022. 2 of 3 1s 1m 1i Water Quality Report — 2nd Semi -Annual Event 2022 Buncombe County Landfill —Alexander, North Carolina 4.3 Leak Detectors and Leachate Samples May 1, 2023 BLE Project No. J22-9378-31 The results of the leak detector field and laboratory analyses are summarized in Table 8 and Table 9 and the laboratory analytical data are included in Appendix B. Please note that the NC2L standards shown on Table 8 and Table 9 are for reference only. There is no regulatory standard for leak detectors or leachate. Field parameters measured in the leak detectors and leachate samples included pH, specific conductance, turbidity, and temperature. 5.0 SUMMARY AND METALS COMPLIANCE Semi-annual assessment monitoring was performed during the 2nd semi-annual event of 2022 in general accordance with the approved WQMP and SWS approved sampling matrix (Table 1). Detected constituents which exceed their respective groundwater and surface water standards are identified on the summary tables. 5.1 Metals Compliance The SWS issued new groundwater metals standards (NC2Ls) on April 1, 2022. As part of the updated NC2L standards, all metals were removed from the Interim Maximum Allowable Concentrations (IMACs) list and added to the NC2L standards. This change has resulted in several metals compliance issues at the facility. BLE understands that solid waste facilities will be allowed to utilize alternate groundwater protection standards calculated from background wells, perform a limited ASD, or enter assessment monitoring per the solid waste regulations. BLE has evaluated the metals data through the October 2022 semi-annual sampling event. BLE conducted a virtual meeting with the SWS on February 21, 2023 to discuss solutions to each metal compliance issue. The SWS agreed that the facility should submit a standalone metals compliance report to document the findings. This report will be submitted under separate cover at a later date. 6.0 QUALIFICATIONS OF REPORT The activities and evaluative approaches used in this assessment are consistent with those normally employed in hydrogeological and environmental assessments of this type. Our evaluation of site conditions has been based on our understanding of the site and project information and the data provided to BLE. This report has been prepared on behalf of and exclusively for the use of Buncombe County, North Carolina. This report and the findings contained herein shall not, in whole or in part, be used or relied upon by any other party (excluding the SWS) without BLE's prior written consent. 7.0 CLOSING We appreciate the opportunity to be of service to Buncombe County, North Carolina. Please contact us at (864) 288-1265 if you have any questions or comments. 3 of 3 TABLES Table 1 SWS Approved Sampling Matrix Buncombe County Landfill Alexander, North Carolina Permit No. 1107-CDLF-1998 Permit No. 1107-MSWLF-1996 BLE Project Number J22-9378-31 April October Station ID *Analytical Suite* 1,4-Dioxane *Analytical Suite* 1,4-Dioxane a MW-1 A-1 Plus A-1 Plus x � u Pa MW-ID A-1 Plus A-1 Plus MW-2 A-1 A-1 MW-21) A-1 A-1 MW-3R A-1 A-1 MW-4 A-1 yes A-1 yes MW-41) A-1 yes A-1 yes MW-5 A-1 A-1 MW-5D A-1 A-1 MW-6 A-1 A-1 MW-7 A-1 A-1 MW-8 A-1 A-1 MW-8D A-1 A-1 MW-10 A-1 yes A-1 yes MW-lOD A-1 yes A-1 yes MW-11 A-1 A-1 u e MW-11D A-1 A-1 UMW-12 A-1 Plus yes A-1 Plus yes MW-12D A-1 Plus yes A-1 Plus yes MW-13 A-1 A-1 MW-13D A-1 A-1 MW-14 A-1 Plus A-1 Plus MW-14D A-1 Plus A-1 Plus MW-15 W W MW-15D W W MW-16 A-1 yes A-1 yes MW-16D A-1 yes A-1 yes MW-17 Abandoned September 14, 2020 MW-17D Abandoned September 14, 2020 MW-17R A-1 Plus yes A-1 Plus yes MW-17DR A-1 Plus yes A-1 Plus yes MW-18 A-1 Plus yes A-1 Plus yes SW-1 A-1 yes A-1 yes SW-2 A-1 yes A-1 yes SW-3 A-1 yes A-1 yes d SW-4 A-1 yes A-1 yes o SW-5 A-1T yes A -IT yes SW-6 A-1T yes A -IT yes SW-7 A-1 yes A-1 yes SW-8 A-1T yes A -IT yes LD-1 A-1 A-1 i, LD-2 A-1 A-1 0 LD-3 A-1 A-1 Ca R LD-4 A-1 A-1 u �? LD-5 A-1 A-1 yes d R LD-6 A-1 A-1 u LD-7 A-1 A-1 .a Leachate LD A-1 A-1 Leachate Pond LMP LMP Notes: A-1 —Appendix I VOCs & Metals A -IT = Appendix I VOCs plus Tetrahydrofuran & Metals A-1 Plus = Appendix I VOCs plus Tetrahydrofuran, & Metals plus Mercury, Manganese, Iron, Sulfate, Chloride, Alkalinity, & Total Dissolved Solids LMP (Leachate Monitoring Parameters) = Appendix I VOCs & Metals, pH, specific conductance, BOD, COD, Nitrates, Sulfates, & Phosphates. W = Water Level Only LD = Leak Detector Does Not Exist - Permitted for Future MSWLF Cell 7 1,4-Dioxane removed for these points Table revised July 16, 2019 (SW-8 and 1,4-doxane) Table revised February 27, 2020 (BLE Project No. 9378-20 for Spring 2020) Table revised June 19, 2020 (Change 1,4-Dioxane Matrix) Table revised October 14, 2020 (Abandon MW-17/MW-17D) Table revised July 20, 2021 (Remove MW-15/MW-15D & add MW-18) Table revised December 15, 2022 (Add MW-16/MW-16D) 9378-31 SWS Approved Matrix Prepared by: AWA Tl Approved Matrix Checked by: RIB Table 2 Well Construction and Monitoring Well Data Buncombe County Landfill Alexander, North Carolina Permit No. 1107-CDLF-1998 Permit No. 1107-MSWLF-1996 BLE Project Number J22-9378-31 Monitoring Point MSW or C&D Latitude Longitude Northing' Easting' TOC Elevation (ft)' Ground Surface Elevation (ft)' Depth to GW (ft) October 17, 2022 * Groundwater Elevation (ft) Well Depth (ft)' Screen Depth (below GS)' Waste Unit Monitored Installation Date' Geology Monitored' Well Status/Purpose Well Diameter (in)' MW-1 Facility 35.722181 -82.627433 737,383.3 923,481.5 2021.22 2019.28 67.81 1953.41 76 61.0 - 76.0 Facility 1990's Saprolite/PWR Background 2.0 MW-ID Facility 35.722146 -82.627474 737,371.0 923,468.7 2021.57 2019.97 69.17 1952.40 200 85.0 - 95.0 Facility 1990's Bedrock Background 2.0 MW-2 MSW 35.727937 -82.635945 739,569.6 921,033.3 1920.86 1918.54 8.60 1912.26 20 5.0 20.0 Cell 1990's Saprolite/PWR Compliance 2.0 MW-2D MSW 35.727926 -82.635964 739,565.7 921,027.7 1920.51 1918.63 9.01 1911.50 55 45.0 - 55.0 Cell 1990's Bedrock Compliance 2.0 MW-3R MSW 35.727678 -82.638122 739,499.1 920,384.3 1973.18 1975.67 54.59 1918.59 55 45.0 - 55.0 Cell 7/28/2014 PWR Compliance 2.0 MW-4 MSW 35.727011 -82.638740 739,263.0 920,192.1 1944.35 1942.48 13.94 1930.41 25 9.0 24.0 Cell 1011011996 Saprolite/PWR Compliance 2.0 MW-4D MSW 35.727004 -82.638789 739,261.0 920,177.3 1944.64 1942.79 14.49 1930.15 55 45.0 - 55.0 Cell 1011111996 Bedrock Compliance 2.0 MW-5 MSW 35.726600 -82.638537 739,111.5 920,246.7 1977.12 1975.39 34.16 1942.96 50 35.0 - 50.0 Cell 101911996 Saprolite/PWR Compliance 2.0 MW-5D MSW 35.726578 -82.638551 739,103.6 920,242.3 1976.92 1975.31 36.13 1940.79 81 71.0 - 81.0 Cell 1011011996 Bedrock Compliance 2.0 MW-6 MSW 35.725655 -82.638573 738,767.9 920,223.6 1987.34 1985.39 25.62 1961.72 50 35.0 - 50.0 Cell 101811996 Saprolite/PWR Compliance 2.0 MW-7 MSW 35.724369 -82.637290 738,286.3 920,586.8 2022.83 2020.72 43.04 1979.79 61 42.0 - 61.0 Cell 101411996 Saprolite/PWR Compliance 2.0 MW-8 MSW 35.723885 -82.636544 738,102.0 920,801.7 1962.06 1959.85 32.23 1929.83 70 55.0 - 70.0 Cell 1990's Saprolite/PWR Compliance 2.0 MW-8D MSW 35.723926 -82.636511 738,116.7 920,812.0 1962.47 1960.57 30.97 1931.50 95 85.0 - 95.0 Cell 1990's Bedrock Compliance 2.0 MW-10 MSW 35.727320 -82.634017 739,324.0 921,597.0 2010.54 2007.50 69.52 1941.02 73 58.0 - 73.0 Cell 3/6/2002 Saprolite/PWR Compliance 2.0 MW-10D MSW 35.727319 -82.634038 739,324.0 921,590.8 2010.56 2007.50 70.17 1940.39 117 102.0 - 117.0 Cell 3/6/2002 Bedrock Compliance 2.0 MW-11 MSW 35.724131 -82.634463 738,169.2 921,422.1 1966.71 1963.70 35.18 1931.53 50 35.0 - 50.0 Cell 3/6/2002 Bedrock Compliance 2.0 MW-11D MSW 35.724088 -82.634516 738,154.0 921,406.0 1966.15 1963.20 36.92 1929.23 70 60.0 - 70.0 Cell 3/6/2002 Bedrock Compliance 2.0 MW-12 C&D 35.725374 -82.642036 738,703.7 919,192.4 1947.39 1944.70 13.70 1933.69 17 7.0 17.0 Phases 1 - 5 6/25/2002 Saprolite/PWR/Bedrock Compliance 2.0 MW-12D C&D 35.727811 -82.632793 739,489.5 921,966.6 1947.10 1944.30 13.11 1933.99 37 27.0 - 37.0 Phases 1 - 5 6/25/2002 Bedrock Compliance 2.0 MW-13 MSW 35.727811 -82.632793 739,489.5 921,966.6 1953.92 1951.30 7.03 1946.89 16 6.0 16.0 Cell 612412005 Bedrock Compliance 2.0 MW-13D MSW 35.725519 -82.642504 738,761.6 919,055.7 1953.82 1951.40 9.28 1944.54 44 39.0 - 44.0 Cell 6/23/2005 Bedrock Compliance 2.0 MW-14 C&D 35.725575 -82.642569 738,782.5 919,037.1 1952.77 1949.80 31.04 1921.73 49 39.0 - 49.0 Phases 1 -5 4/5/2006 Bedrock Compliance 2.0 MW-14D C&D 35.725374 -82.642036 738,703.7 919,192.4 1953.76 1950.70 31.35 1922.41 88 78.0 - 88.0 Phases 1 - 5 4/6/2006 Bedrock Compliance 2.0 MW-15 C&D 35.726646 -82.639947 739,143.4 919,829.3 1973.29 1970.21 21.45 1951.84 26 16.0 - 26.0 Phases 1 - 5 6/7/2012 Saprolite/PWR WL 2.0 MW-15D C&D 35.726646 -82.639947 739,143.4 919,829.3 1973.51 1970.25 25.08 1948.43 43 33.0 - 43.0 Phases 1 -5 6/7/2012 Bedrock WL 2.0 MW-16 MSW 35.728277 -82.630809 739,637.4 922,561.2 1973.88 1970.88 28.78 1945.10 46 36.0 - 46.0 Cell? 9/28/2022 Saprolite/PWR Compliance 2.0 MW-16D MSW 35.728286 -82.630794 739,640.4 922,565.7 1973.44 1970.44 28.46 1944.98 76 66.0 - 76.0 Cell? 9/29/2022 Bedrock Compliance 2.0 MW-17 Abandoned - September 14, 2020 MW-17D Abandoned - September 14, 2020 MW-17R C&D 35.724980 -82.643807 738,579.7 918,662.0 1891.61 1888.96 15.73 1875.88 23.5 8.5 23.5 Phase 6 9/3/2020 Bedrock Compliance 2.0 MW-17DR C&D 35.724952 -82.643815 738,569.7 918,659.3 1891.70 1889.14 14.50 1877.20 39 34.0 - 39.0 Phase 6 9/2/2020 Bedrock Compliance 2.0 MW-18 C&D 35.726743 -82.640369 739,183.2 919,705.2 1940.67 1937.97 44.65 1896.02 51.5 41.5 - 51.5 Phases 1 - 5 6/11/2008 Bedrock Compliance 2.0 * Depth to groundwater was measured on November 1, 2022 at MW-1, MW-2, MW-12, MW-14, and MW-17DR. These measurements were not used to produce the Groundwater Elevation Contour Map (Figure 2). - Data from Table 3, Well Construction, New Buncombe County Landfill, Buncombe County, North Carolina, provided by SCS Engineers. Z - Based on visual observation of Sheet No I Groundwater and Methane Monitoring Well Locations by CDM Smith dated August 2014. Some well installation dates appear inconsistent with water level records and may not be accurate. Changes to some dates (italics) made based on water level records and dates from SHR and DHR documents by CDM. The top of casing and ground surface elevations for MW-3R are a probable error (reversed) based on April 2016 water levels in the SCS Engineers report. The top of casing and ground surface elevations for MW-14 and MW-14D do not match those in the SHR and DHR documents by CDM. The well construction and survey data for MW-17R and MW-17DR are from a report by SCS dated October 13, 2020 The well construction data for MW-16 and MW-16D are from a report by SCS dated December 5, 2022 Location accuracy of the monitoing wells is limited by the references themselves The well construction data for MW-18 from the DHR table and boring log by CDM. Surveying was performed by Ed Holmes and Associates of Asheville, NC in September 2021. TOC - Top of Casing. GS - Ground Surface. NM - Not Measured All depth measurments in feet -- All elevations in feet above an arbitrary site datum 9378-31 GW Tables (Completion, water levels, detections).xlsx Prepared by: TAO T2 (11-1-22) MW Points Checked by: ZID Table 3 Range of Groundwater Flow Velocities Buncombe County Landfill Alexander, North Carolina Permit No. 1107-CDLF-1998 Permit No. 1107-MSWLF-1996 BLE Project Number J22-9378-31 Hydraulic Conductivity K(ft/min) K(cm/sec) K(ft/day) High Estimate 8.0E-03 4.1E-03 11.5 Low Estimate 9.7E-05 4.9E-05 0.14 Geometric Mean 8.8E-04 4.5E-04 1.269 Geometric Mean Hydraulic Conductivity K(ft/day) Hydraulic Grad. (ft/ft) Effective Porosity Flow Vel. (ft/day) Flow Vel. (ft/year) High Estimate 1.269 0.282 5% 7.15 2,609 Low Estimate 1.269 0.025 28% 0.12 42 Notes 1. Hydraulic conductivity and effeictive porosity values obtainted from Tables 5 and 6 of the Design Hydrogeologic Report - Phase 6 C&D prepared by BLE dated September 21, 2017. 3. The hydraulic gradients were measured from the October 17, 2022 groundwater elevation contour map (Figure 2). The high hydraulic gradient was measured between the 1880-ft & 1900-ft groundwater contours near MW-17R . The low hydraulic gradient was measured between the 1950-ft & 1960-ft groundwater contours near MW-12. 4. Groundwater velocity derived from V = Ki/n, where: K = geometric mean hydraulic conductivity, i = hydraulic gradient, and n, = effective porosity. 5. The high and low velocity estimates are calculated using the geometric mean K and the high and low range of site hydraulic data obtained from BLE's 2017 DHR. 9378-31 GW Tables (Completion, water levels, detections).xlsx Prepared By: TAO Table 3 GW Flow Vel. Checked By: ZJD Table 4 Groundwater VOCs Buncombe County Landfill Alexander, North Carolina Permit No. 1107-CDLF-1998 Permit No. 1107-MSWLF-1996 BLE Project Number J22-9378-31 Sampled by Pace Analytical Services, LLC. October 17-19, 2022 & November 1, 2022 TEST UNITS LOQ DL MCL MW-1 MW-11) MW-2 MW-21) MW-3R MW-4 MW-4D MW-5 MW-51) MW-6 MW-7 MW-8 MW-8D MW-10 MW-10D MW-11 MW-11D MW-12 MW-12D MW-13 MW-13D MW-14 MW-14D MW-15 MW-15D MW-16 MW-16D MW-17R -17DR MW-18 EQUIP. BLANK Acetone µg/l 20 5.0 6,000 15.0 15.0 <5.0 <5.0 13 J <5.0 <5.0 <5.0 6.0 JL <5.0 <5.0 <5.0 6.3 J 9.0 J <5.0 <5.0 <5.0 18 RJ <5.0 <5.0 <5.0 <5.0 6.6 J NS NS 7.7 JL 5.3 JL <5.0 6.9 J <5.0 <5.0 Acrylonihile 1-9/1 20 0.8 NE <0.8 10.8 <0.8 <0.8 <0.8 <0.8 <0.8 <0.8 <0.8 <0.8 <0.8 <0.8 <0.8 <0.8 <0.8 <0.8 <0.8 <0.8 <0.8 <0.8 <0.8 <0.8 <0.8 NS NS <0.8 <0.8 <0.8 <0.8 <0.8 <0.8 Benzene µg/l 1.0 0.4 LO <0.4 <0.4 <0.4 <0.4 <0.4 <0.4 <0.4 <0.4 <0.4 <0.4 <0.4 <0.4 <0.4 <0.4 <0.4 <0.4 <0.4 <0.4 <0.4 <0.4 <0.4 <0.4 <0.4 NS NS <0.4 <0.4 <0.4 <0.4 <0.4 <0.4 Bromocllorome[hane µ0 1.0 0.4 NE <0.4 <0.4 <0.4 <0.4 <0.4 <0.4 <0.4 <0.4 <0.4 <0.4 <0.4 <0.4 <0.4 <0.4 <0.4 <0.4 <0.4 <0.4 <0.4 <0.4 <0.4 <0.4 <0.4 NS NS <0.4 <0.4 <0.4 <0.4 <0.4 <0.4 Bromodichloromethane 9911 1.0 0.4 0.6 <0.4 <0.4 <0.4 <0.4 <0.4 <0.4 <0.4 <0.4 <0.4 <0.4 <0.4 <0.4 <0.4 <0.4 <0.4 <0.4 <0.4 <0.4 <0.4 <0.4 <0.4 <0.4 <0.4 NS NS <0.4 <0.4 <0.4 <0.4 <0.4 <0.4 Bromoform µ0 1.0 0.4 4.0 <0.4 <0.4 <0.4 <0.4 <0.4 <0.4 <0.4 <0.4 <0.4 <0.4 <0.4 <0.4 <0.4 <0.4 <0.4 <0.4 <0.4 <0.4 <0.4 <0.4 <0.4 <0.4 <0.4 NS NS <0.4 <0.4 <0.4 <0.4 <0.4 <0.4 Carbon Disulfide 9911 1.0 0.4 700 0.42 J <0.4 <0.4 <0.4 <0.4 <0.4 <0.4 <0.4 <0.4 <0.4 <0.4 <0.4 <0.4 0.87 J <0.4 <0.4 <0.4 <0.4 <0.4 <0.4 <0.4 <0.4 <0.4 NS NS <0.4 <0.4 <0.4 <0.4 <0.4 <0.4 Bromomethane (Methylbromide) 1-9/1 2.0 0.4 10 <0.4 <0.4 <0.4 <0.4 <0.4 <0.4 <0.4 <0.4 <0.4 <0.4 <0.4 <0.4 <0.4 <0.4 <0.4 <0.4 <0.4 <0.4 <0.4 <0.4 <0.4 <0.4 <0.4 NS NS <0.4 <0.4 <0.4 <0.4 <0.4 <0.4 Carbon tetrachloride 9911 1.0 0.4 0.3 <0.4 <0.4 <0.4 <0.4 <0.4 <0.4 <0.4 <0.4 <0.4 <0.4 <0.4 <0.4 <0.4 <0.4 <0.4 <0.4 <0.4 <0.4 <0.4 <0.4 <0.4 <0.4 <0.4 NS NS <0.4 <0.4 <0.4 <0.4 <0.4 <0.4 Chlorobenzene (mono) µg/l 1.0 0.4 50.0 <0.4 <0.4 <0.4 <0.4 <0.4 <0.4 <0.4 <0.4 <0.4 <0.4 <0.4 <0.4 <0.4 <0.4 <0.4 <0.4 <0.4 <0.4 <0.4 <0.4 <0.4 <0.4 <0.4 NS NS <0.4 <0.4 <0.4 <0.4 <0.4 <0.4 Chloroethane µg/l 2.0 0.4 3,000 <0.4 <0.4 <0.4 <0.4 <0.4 <0.4 <0.4 <0.4 <0.4 <0.4 <0.4 <0.4 <0.4 <0.4 <0.4 <0.4 <0.4 <0.4 <0.4 <0.4 <0.4 <0.4 <0.4 NS NS <0.4 <0.4 <0.4 <0.4 <0.4 <0.4 Chloroform µ0 1.0 0.4 70.0 <0.4 <0.4 <0.4 <0.4 <0.4 <0.4 <0.4 <0.4 <0.4 <0.4 <0.4 <0.4 <0.4 <0.4 <0.4 <0.4 <0.4 <0.4 <0.4 <0.4 <0.4 <0.4 <0.4 NS NS <0.4 <0.4 <0.4 <0.4 <0.4 <0.4 Chlommethane (Methylchlonde) 9911 1.0 0.5 3.0 <0.5 <0.5 <0.5 <0.5 <0.5 <0.5 <0.5 <0.5 <0.5 <0.5 <0.5 <0.5 <0.5 <0.5 <0.5 <0.5 <0.5 <0.5 <0.5 <0.5 <0.5 <0.5 <0.5 NS NS <0.5 <0.5 <0.5 <0.5 <0.5 <0.5 Dibromochloromethane µfill 1.0 0.4 0.4 <0.4 <0.4 <0.4 <0.4 <0.4 <0.4 <0.4 <0.4 <0.4 <0.4 <0.4 <0.4 <0.4 <0.4 <0.4 <0.4 <0.4 <0.4 <0.4 <0.4 <0.4 <0.4 <0.4 NS NS <0.4 <0.4 <0.4 <0.4 <0.4 <0.4 1,2-Dibromo-3-chloropropane; DBCP 9911 1.0 0.4 0.04 <0.4 <0.4 <0.4 <0.4 <0.4 <0.4 <0.4 <0.4 <0.4 <0.4 <0.4 <0.4 <0.4 <0.4 <0.4 <0.4 <0.4 <0.4 <0.4 <0.4 <0.4 <0.4 <0.4 NS NS <0.4 <0.4 <0.4 <0.4 <0.4 <0.4 1,2-Dibromoethane; Ethylene dibromide µfill 1.0 0.4 0.02 10.4 <0.4 <0.4 <0.4 <0.4 <0.4 <0.4 <0.4 <0.4 <0.4 <0.4 <0.4 <0.4 <0.4 <0.4 <0.4 <0.4 <0.4 <0.4 <0.4 <0.4 <0.4 <0.4 NS NS <0.4 <0.4 <0.4 <0.4 <0.4 <0.4 Dibromomethane µg/l 1.0 0.4 70.0 (i) <0.4 <0.4 <0.4 <0.4 <0.4 <0.4 <0.4 <0.4 <0.4 <0.4 <0.4 <0.4 <0.4 <0.4 <0.4 <0.4 <0.4 <0.4 <0.4 <0.4 <0.4 <0.4 <0.4 NS NS <0.4 <0.4 <0.4 <0.4 <0.4 <0.4 1,2-Dichlombenzene µg/l 1.0 0.4 20 <0.4 <0.4 <0.4 <0.4 <0.4 <0.4 <0.4 <0.4 <0.4 <0.4 <0.4 <0.4 <0.4 <0.4 <0.4 <0.4 <0.4 <0.4 <0.4 <0.4 <0.4 <0.4 <0.4 1 NS NS <0.4 <0.4 <0.4 <0.4 <0.4 <0.4 1,4-Dichlorobenzene 9911 1.0 0.4 6.0 <0.4 <0.4 <0.4 <0.4 <0.4 <0.4 <0.4 <0.4 <0.4 <0.4 <0.4 <0.4 1 <0.4 <0.4 <0.4 <0.4 <0.4 <0.4 <0.4 <0.4 <0.4 <0.4 <0.4 NS NS <0.4 <0.4 <0.4 <0.4 <0.4 <0.4 trans-1,4-Dichloro-2-butene µfill 2.0 0.5 NE <0.5 <0.5 <0.5 <0.5 <0.5 <0.5 <0.5 <0.5 <0.5 <0.5 <0.5 <0.5 <0.5 <0.5 <0.5 <0.5 <0.5 <0.5 <0.5 <0.5 <0.5 <0.5 <0.5 NS NS <0.5 <0.5 <0.5 <0.5 <0.5 <0.5 1,1-Dichlomethane µg/l 1.0 0.4 6.0 <0.4 <0.4 <0.4 <0.4 <0.4 <0.4 <0.4 <0.4 <0.4 <0.4 <0.4 <0.4 <0.4 <0.4 1.1 <0.4 <0.4 <0.4 <0.4 <0.4 <0.4 <0.4 <0.4 NS NS <0.4 <0.4 <0.4 <0.4 <0.4 <0.4 1,2-Dichloroethane µfill 1.0 0.4 0.4 <0.4 <0.4 <0.4 <0.4 <0.4 <0.4 <0.4 <0.4 <0.4 <0.4 <0.4 <0.4 <0.4 <0.4 <0.4 <0.4 <0.4 <0.4 <0.4 <0.4 <0.4 <0.4 <0.4 NS NS <0.4 <0.4 <0.4 <0.4 <0.4 <0.4 1,1-Dichlomethene(-ethylene) 9911 1.0 0.4 350 <0.4 <0.4 <0.4 <0.4 <0.4 <0.4 <0.4 <0.4 <0.4 <0.4 <0.4 <0.4 <0.4 <0.4 <0.4 <0.4 <0.4 <0.4 <0.4 <0.4 <0.4 <0.4 <0.4 NS NS <0.4 <0.4 <0.4 <0.4 <0.4 <0.4 cis-1,2-Dichloroetheoe (-ethylene) µ0 1.0 0.4 70.0 <0.4 <0.4 <0.4 <0.4 <0.4 <0.4 <0.4 <0.4 <0.4 <0.4 <0.4 <0.4 <0.4 <0.4 0.83 J <0.4 <0.4 <0.4 <0.4 <0.4 <0.4 <0.4 <0.4 NS NS <0.4 <0.4 <0.4 <0.4 <0.4 <0.4 trans-1,2-Dichlomethene (-ylene) µg/l 1.0 0.4 100 <0.4 <0.4 <0.4 <0.4 <0.4 <0.4 <0.4 <0.4 <0.4 <0.4 <0.4 <0.4 <0.4 <0.4 <0.4 <0.4 <0.4 <0.4 <0.4 <0.4 <0.4 <0.4 <0.4 NS NS <0.4 <0.4 <0.4 <0.4 <0.4 <0.4 1,2-Diclloropropane µg/l 1.0 0.4 0.6 <0.4 <0.4 <0.4 <0.4 <0.4 <0.4 <0.4 <0.4 <0.4 <0.4 <0.4 <0.4 <0.4 <0.4 <0.4 <0.4 <0.4 <0.4 <0.4 <0.4 <0.4 <0.4 <0.4 NS NS <0.4 <0.4 <0.4 <0.4 <0.4 <0.4 cis-1,3-Dichloropropene (-propylene) 9911 1.0 0.4 0.4 <0.4 <0.4 <0.4 <0.4 <0.4 <0.4 <0.4 <0.4 <0.4 <0.4 <0.4 <0.4 <0.4 <0.4 <0.4 <0.4 <0.4 <0.4 <0.4 <0.4 <0.4 <0.4 <0.4 NS NS <0.4 <0.4 <0.4 <0.4 <0.4 <0.4 trans-1,3-Diclloropropene (-propylene) µfill 1.0 0.4 0.4 <0.4 <0.4 <0.4 <0.4 <0.4 <0.4 <0.4 <0.4 <0.4 <0.4 <0.4 <0.4 <0.4 <0.4 <0.4 <0.4 <0.4 <0.4 <0.4 <0.4 <0.4 <0.4 <0.4 NS NS <0.4 <0.4 <0.4 <0.4 <0.4 <0.4 Ethylbenzene 9911 1.0 0.4 600 <0.4 <0.4 <0.4 <0.4 <0.4 <0.4 <0.4 <0.4 <0.4 <0.4 <0.4 <0.4 <0.4 <0.4 <0.4 <0.4 <0.4 <0.4 <0.4 <0.4 <0.4 <0.4 <0.4 NS NS <0.4 <0.4 <0.4 <0.4 <0.4 <0.4 2-Hex anone µe 10 2.0 40 <2.0 <2.0 <2.0 <2.0 <2.0 <2.0 <2.0 <2.0 <2.0 <2.0 <2.0 <2.0 <2.0 <2.0 <2.0 <2.0 <2.0 <2.0 <2.0 <2.0 <2.0 <2.0 <2.0 NS NS <2.0 <2.0 <2.0 <2.0 <2.0 <2.0 Iodomethane µg/l 5.0 0.4 NE <0.4 <0.4 <0.4 <0.4 <0.4 <0.4 <0.4 <0.4 <0.4 <0.4 <0.4 <0.4 <0.4 <0.4 <0.4 <0.4 <0.4 <0.4 <0.4 <0.4 <0.4 <0.4 <0.4 NS NS <0.4 <0.4 <0.4 <0.4 <0.4 <0.4 Dichloromethane (Methylene chloride) µfill 1.0 0.4 5.0 <0.4 <0.4 <0.4 <0.4 <0.4 <0.4 0.53 J <0.4 <0.4 <0.4 <0.4 <0.4 <0.4 <0.4 0.62 J <0.4 <0.4 <0.4 <0.4 <0.4 <0.4 <0.4 <0.4 NS NS <0.4 <0.4 <0.4 <0.4 <0.4 <0.4 2-Butanone (Methyl ethyl ketone) 9911 10 2.0 4,000 <2.0 <2.0 <2.0 <2.0 <2.0 <2.0 <2.0 <2.0 <2.0 <2.0 <2.0 <2.0 <2.0 6.7 J <2.0 <2.0 <2.0 <2.0 <2.0 <2.0 <2.0 <2.0 <2.0 NS NS <2.0 <2.0 <2.0 <2.0 <2.0 <2.0 4-Methyl-2-Pentanone µ0 10 2.0 100 <2.0 <2.0 <2.0 <2.0 <2.0 <2.0 <2.0 <2.0 <2.0 <2.0 <2.0 <2.0 <2.0 <2.0 <2.0 <2.0 <2.0 <2.0 <2.0 <2.0 <2.0 <2.0 <2.0 NS NS <2.0 <2.0 <2.0 <2.0 <2.0 <2.0 Styrene µg/l 1.0 0.41 70 <0.4 <0.4 <0.4 <0.4 <0.4 <0.4 <0.4 <0.4 <0.4 <0.4 <0.4 <0.4 <0.4 <0.4 <0.4 <0.4 <0.4 <0.4 <0.4 <0.4 <0.4 <0.4 <0.4 NS NS <0.4 <0.4 <0.4 <0.4 <0.4 <0.4 1,1,1,2-Tetmchloroethane µfill 1.0 0.4 LO <0.4 <0.4 <0.4 <0.4 <0.4 <0.4 <0.4 <0.4 <0.4 <0.4 <0.4 <0.4 <0.4 <0.4 <0.4 <0.4 <0.4 <0.4 <0.4 <0.4 <0.4 <0.4 <0.4 NS NS <0.4 <0.4 <0.4 <0.4 <0.4 <0.4 1, 1,2,2-Tetmchlomethane 9911 1.0 0.4 0.2 <0.4 <0.4 <0.4 <0.4 <0.4 <0.4 <0.4 <0.4[<0.4 <0.4 <0.4 <0.4 <0.4 <0.4 <0.4 <0.4 <0.4 <0.4 <0.4 <0.4 <0.4 <0.4 <0.4 <0.4 NS NS <0.4 <0.4 <0.4 <0.4 <0.4 <0.4 Tetmclloroethene (-ethylene) 1-9/1 1.0 0.4 0.7 <0.4 <0.4 <0.4 <0.4 <0.4 <0.4 <0.4 <0.4<0.4 <0.4 <0.4 <0.4 <0.4 <0.4 <0.4 <0.4 <0.4 <0.4 <0.4 <0.4 <0.4 <0.4 <0.4 NS NS <0.4 <0.4 <0.4 <0.4 <0.4 <0.4 Toluene µg/l 1.0 0.4 600 <0.4 <0.4 <0.4 <0.4 <0.4 <0.4 <0.4 <0.4<0.4 <0.4 <0.4 <0.4 <0.4 <0.4 <0.4 <0.4 <0.4 <0.4 <0.4 <0.4 <0.4 <0.4 <0.4 NS NS <0.4 <0.4 <0.4 <0.4 <0.4 <0.4 1,1,1-Trichloroethane µg/l 1.0 0.4 200 <0.4 <0.4 <0.4 <0.4 <0.4 <0.4 <0.4 <0.4<0.4 <0.4 <0.4 <0.4 <0.4 <0.4 <0.4 <0.4 <0.4 <0.4 <0.4 <0.4 <0.4 <0.4 <0.4 NS NS <0.4 <0.4 <0.4 <0.4 <0.4 <0.4 1, 1,2-Trlchloroethane 9911 1.0 0.4 0.6 <0.4 <0.4 <0.4 <0.4 <0.4 <0.4 <0.4 <0.4<0.4 <0.4 <0.4 <0.4 <0.4 <0.4 <0.4 <0.4 <0.4 <0.4 <0.4 <0.4 <0.4 <0.4 <0.4 NS NS <0.4 <0.4 <0.4 <0.4 <0.4 <0.4 Trichloroethene (-ethylene) 1-9/1 1.0 0.4 3.0 <0.4 <0.4 10.4 <0.4 <0.4 <0.4 <0.4 <0.4<0.4 <0.4 <0.4 <0.4 <0.4 <0.4 <0.4 <0.4 <0.4 <0.4 <0.4 <0.4 <0.4 <0.4 <0.4 NS NS <0.4 <0.4 <0.4 <0.4 <0.4 <0.4 Trichloroflumomethane 9911 1.0 0.4 2,000 <0.4 <0.4 <0.4 <0.4 <0.4 <0.4 <0.4 <0.4<0.4 <0.4 <0.4 <0.4 <0.4 <0.4 <0.4 <0.4 <0.4 <0.4 <0.4 <0.4 <0.4 <0.4 <0.4 NS NS <0.4 <0.4 <0.4 <0.4 <0.4 <0.4 1,2,3-Trichloropropane µg/l 1.0 0.4 0.005 <0.4 <0.4 <0.4 <0.4 <0.4 <0.4 <0.4 <0.4 <0.4 <0.4 <0.4 <0.4 <0.4 <0.4 <0.4 <0.4 <0.4 <0.4 <0.4 <0.4 <0.4 <0.4 NS NS <0.4 <0.4 <0.4 <0.4 <0.4 <0.4 Vinyl acetate 9911 5.0 1.2 88.0 (i) <1.2 <1.2 <1.2 <1.2 <1.2 <1.2 <1.2 <1.2 <1.2 <1.2 <1.2 <1.2 <1.2 <1.2 <1.2 <1.2 <1.2 <1.2 <1.2 <1.2 <1.2 <1.2 <1.2 NS <L2 <1.2 <1.2 <1.2 <L2 Vinyl chloride µfill 1.0 0.4 0.03 <0.4 <0.4 <0.4 <0.4 <0.4 <0.4 <0.4 <0.4 <0.4 <0.4 <0.4 <0.4 <0.4 <0.4 <0.4 <0.4 <0.4 <0.4 <0.4 <0.4 <0.4 <0.4 <0.4 NS <0.4 <0.4 <0.4 <0.4 <0.4 <0.4 Total Xylenes µ911 1.0 0.4 500 <0.4 <0.4 <0.4 <0.4 <0.4 <0.4 <0.4 <0.4 <0.4 <0.4 <0.4 <0.4 <0.4 <0.4 <0.4 <0.4 <0.4 <0.4 <0.4 <0.4 <0.4 <0.4 <0.4 NS �NS<1.2 <0.4 <0.4 <0.4 <0.4 <0.4 <0.4 Tetrahydroturan µgA 5.0 1.0 2,000 (i) <L0 <1.0 <I.0 <1.0 <I.0 <1.0 <I.0 <1.0 <I.0 <1.0 <1.0 <1.0 <I.0 <1.0 <I.0 <1.0 <I.0 2.1 J 1.1 J <1.0 <I.0 <1.0 <I.0 NS <1.0 <I.0 <1.0 <I.0 <1.0 <I.0 1,4-Dioxane3.01.030NT NT NT NT <1.0 <I.0 NT NT NT NT NT NT <1.0 <I.0 NT NT 2.7 J <I.0 NT NT NT NT NS <1.0 <I.0 I <l.p <I.0 <l.p <I.0 Notes: 1. MCL = Maximum Contaminant Level, as established in the NCDEQ, Groundwater Classifications and Standards Section 15A NCAC 2L .0202. Updated April 1, 2022 2. (i) = Interim Maximum Allowable Concentrations (IMACs). Updated April 1, 2022 3. Shaded cells indicate exceedances of IMACs 4. Shaded cells indicated exceedances of MCLs 5. NE =Not Established; North Carolina has not established a MCL 6. LOQ = Limit of Quantitation 7. DL - method Detection Limit S. NT = Not Tested 9. NS = Not Sampled 10. "J"-flagged data (i.e., values estimated between the DL and the LOQ) are presented on this spreadsheet. 11. V'-flagged data denote LCS/LCSD failure 12. "H"-flagged data denote sample was analyzed out of holding time. 9378-31 GW Tables (Completion, water levels, detecdons).xlsx Prepared by: TAO T4 (11-1-22) VOC Checked by: ZJD Table 5 Groundwater Field Parameters, Geochemical Parameters, and Total Metals Buncombe County Landfill Alexander, North Carolina Permit No. 1107-CDLF-1998 Permit No. 1107-MSWLF-1996 BLE Project Number J22-9378-31 Sampled by Pace Analytical Services, LLC. October 17-19, 2022 & November 1, 2022 TEST UNITS LOQ DL MCL MW-1 MW-11) MW-2 MW-213 MW-3R MW-4 MW413 MW-5 MW-51) MW-6 MW-7 MW-8 MW-81) MW-10 MW-lOD MW-11 MW-11D MW-12 MW-12D MW-13 MW-13D MW-14 MW-14D MW-15 MW-15D MW-16 MW-16D MW-17R MW-17DR MW-18 EQUIP. BLANK pH S.U. <6.5; >8.5 7.1 6.09 6.6 5.96 5.8 7.1 5.98 6.01 5.80 6.5 6.6 6.4 5.7 63 6.6 6.5 6.1 6.9 63 6.51 6.12 7.3 NS NS 6.3 7.2 6.5 7.04 6.7 NT Specific Conductance µmhos/cm NE 176.1 230.5 406.9 259.5 129.7 254.9 266.9 242.3 226.0 155.5 671 383.2 428.8 354.0 395.4 465.3 430.1 1,097 525.1 414.0 402.3 189.3 334.3 NS NS 171.6 213.8 242.3 311.9 230.7 NT Temperature °C NE 14.6 11.9 15.4 11.6 17.5 17.6 18.2 10.8 13.4 17.2 13.7 9.6 8.0 17.2 15.6 12.2 7.4 17.6 10.4 11.9 8.6 16.3 11.4 NS NS 5.6 7.2 5.3 15.2 11.8 NT Turbidity NTU NE 9.46 9.3 10.24 0.1 8.72 2.09 0.1 5.35 0.88 1.32 5.9 7.5 1.4 9.22 4.0 8.0 7.6 9.04 1.9 9.41 7.22 5.25 3.0 NS NS 6.81 3.0 2.1 8.39 9.8 NT Alkalinity -9/1 20 20 NE 55 76 NT NT NT NT NT NT NT NT NT NT NT NT NT NT NT 290 200 NT NT 68 150 NS NS NT NT 88 130 82 NT Total Dissolved Solids (IDS) mg/1 25 25 500 110 <25.0 NT NT NT NT NT NT NT NT NT NT NT NT NT NT NT 770 350 NT NT 150 220 NS NS NT NT 150 H 210 160 NT Total Iron (Fe) µg/1 50 13 3,890 660 290 NT NT NT NT NT NT NT NT NT NT NT NT NT NT NT 240 68 NT NT 520 80 NS NS NT NT 80 840 200 NT Sulfate mg/1 1.0 0.25 250 17 37 NT NT NT NT NT NT NT NT NT NT NT NT NT NT NT 280 78 NT NT 19 32 H NS NS NT NT 32 24 35 H NT Chloride m9/1 1.0 0.25 250 5.9 2.5 NT NT NT NT NT NT NT NT NT NT NT NT NT NT NT 38 1 15 NT NT 2.4 4.0 H NS NS NT NT 3.6 4.2 1.7 H NT Total Antimony (Sb) µg/l 2.0 0.5 1.0 <0.5 0.68 J <0.5 <0.5 <0.5 <0.5 0.50 J <0.5 <0.5 <0.5 <0.5 1.4 J <0.5 <0.5 <0.5 <0.5 0.56 J <0.5 <0.5 <0.5 <0.5 <0.5 0.52 J NS NS <0.5 <0.5 <0.5 <0.5 <0.5 <0.5 Total Arsenic (As) 119/1 2.0 1.3 10 <1.3 <1.3 <1.3 <1.3 <1.3 <1.3 <1.3 <1.3 <1.3 <1.3 <1.3 <1.3 <1.3 <1.3 <1.3 <1.3 <1.3 <1.3 <1.3 <1.3 <1.3 <1.3 <1.3 NS NS <1.3 <1.3 <1.3 <1.3 <1.3 <1.3 Total Barium (Ba) µg/l 5.0 1.3 700 120 37 180 98 76 69 30 120 69 52 150 140 160 120 48 110 61 90 45 240 210 47 6.0 NS NS 37 34 57 63 12 <1.3 Total Beryllium (Be) µg/1 0.4 0.15 4.0 <0.2 <0.2 <0.2 <0.2 <0.2 <0.2 <0.2 <0.2 <0.2 <0.2 <0.2 <0.2 <0.2 <0.2 <0.2 <0.2 <0.2 <0.2 <0.2 <0.2 <0.2 <0.2 <0.2 NS NS <0.2 <0.2 <0.2 <0.2 <0.2 <0.2 Total Cadmium (Cd) µg/l 0.5 0.13 2.0 <0.1 <0.1 0.24 J <0.1 <0.1 <0.1 <0.1 <0.1 <0.1 <0.1 <0.1 <0.1 <0.1 <0.1 <0.1 <0.1 <0.1 <0.1 <0.1 0.15 J <0.1 <0.1 <0.1 NS NS <0.1 <0.1 <0.1 <0.1 <0.1 <0.1 Total Chromium (Cr) 119/1 5.0 1.3 10 2.3 J 1.4 J 1.7 J 1.3 J 4.7 J <1.3 <1.3 1 1.8 J 3.6 J <1.3 2.0 J 4.0 J 1.8 J 4.3 J 3.5 J 1 <1.3 <1.3 1.4 J <1.3 <1.3 <1.3 1.5 J <1.3 NS NS 7.4 1.6 J <1.3 <1.3 3.9 J <1.3 Total Cobalt (Co) µg/l 5.0 1.3 11 <1.3 1.7 J 9.0 <1.3 <1.3 <1.3 <1.3 <1.3 <1.3 <1.3 1.9 J <1.3 <1.3 5.6 2.5 J 7.3 <1.3 27 2.7 J 6.1 11 <1.3 <1.3 NS NS <1.3 <1.3 <1.3 <1.3 <1.3 <1.3 Total Copper (Cu) 119/1 5.0 1.3 11000 1.7 J <1.3 <1.3 <1.3 <1.3 <1.3 <1.3 <1.3 <1.3 <1.3 <1.3 2.2 J <1.3 2.0 J 1.4 J 1.4 J 4.2 J 1.8 J <1.3 1.8 J <1.3 <1.3 1 <1.3 NS NS 1.3 J <L3 4.7 J <1.3 2.2 J <1.3 Total Lead (Pb) µ9/1 1.0 0.25 15 <0.3 0.45 J <0.3 <0.3 <0.3 <0.3 <0.3 <0.3 <0.3 <0.3 <0.3 <0.3 <0.3 <0.3 <0.3 0.31 J 0.31 J <0.3 1 <0.3 0.82 J <0.3 <0.3 <0.3 NS NS <0.3 <0.3 <0.3 <0.3 <0.3 <0.3 Total Manganese (Mn) µgA 5.0 1.3 50 19 5.9 <L3 NT NT NT NT NT NT NT NT NT NT NT NT NT NT 2,600 400 NT NT 7.7 5.5 NS NS <L3 <L3 23 86 27 NT Total Mercury (Hg) µ9/1 0.20 0.091 1.0 <0.1 <0.1 <0.1 NT NT NT NT NT NT NT NT NT NT NT NT NT NT <0.1 <0.1 NT NT <0.1 <0.1 NS NS NT NT <0.1 <0.1 <0.1 NT Total Nickel (Ni) 119/1 5.0 1.3 100 2.0 J 7.4 18 1.6 J 5.5 5.2 <1.3 3.3 J 5.8 <1.3 16 4.1 J 4.6 J 12 15 19 5.0 33 4.1 J 1.7 J 12 3.9 J 1.4 J NS NS 5.8 5.9 16 <1.3 4.2 J <1.3 Total Selenium (Se) µg/l 5.0 1.3 20 <1.3 <1.3 <1.3 <1.3 <1.3 <1.3 <1.3 <1.3 <1.3 <1.3 <1.3 <1.3 <1.3 <1.3 <1.3 <1.3 <1.3 <1.3 <1.3 <1.3 <1.3 <1.3 <1.3 NS NS 1.3 J <1.3 <1.3 <1.3 <1.3 <1.3 Total Silver ( ) 119/1 1.0 0.25 20 <0.3 <0.3 <0.3 <0.3 <0.3 <0.3 <0.3 <0.3 <0.3 <0.3 <0.3 <0.3 <0.3 <0.3 <0.3 <0.3 <0.3 <0.3 <0.3 <0.3 <0.3 <0.3 <0.3 NS NS <0.3 <0.3 <0.3 <0.3 <0.3 <0.3 Total Thallium (I) µg/l 0.5 0.15 2.0 <0.2 <0.2 <0.2 <0.2 <0.2 <0.2 <0.2 <0.2 <0.2 <0.2 <0.2 <0.2 <0.2 <0.2 <0.2 <0.2 <0.2 <0.2 0.23 J <0.2 <0.2 <0.2 <0.2 NS NS <0.2 <0.2 <0.2 <0.2 <0.2 <0.2 Total Vanadium (V) µg/1 5.0 2.5 7.0 4.1 J <2.5 4.9 J <2.5 3.9 J 1.5 3.2 J 3.3 J 1.5 <2.5 <2.5 <2.5 <2.5 <2.5 <2.5 <2.5 <2.5 <2.5 <2.5 <2.5 <2.5 2.8 J <2.5 NS NS 3.4 J 3.3 J <2.5 <2.5 <2.5 <2.5 Total Zinc (Zn) µgQ 10 2.5 1,000 3.1 J 5.4 J 8.2 J <2.5 <2.5 3.7 J 4.1 J 3.9 J <2.5 <2.5 4.4 J 17 3.6 J 4.5 J 4.3 J 2.6 J 22 2.7 J 5.4 J 16 5.3 J <2.5 5.1 J NS NS <2.5 4.6 J 11 <2.5 4.3 J <2.5 Notes. 1. MCL = Maximum Contaminant Level, as established in the NCDEQ, Groundwater Classifications and Standards Section 15A NCAC 2L .0202. Updated April 1, 2022 2. Alternate Groundwater Protection Standard (AGWPS) as approved by the SWS 3. Shaded cells indicated exceedances of MCLs or AGWPS 4. NE = Not Established; North Carolina has not established a MCL 5. LOQ = Limit of Quantitation 6. DL = method Detection Limit 7. NT-Not Tested 8. NS = Not Sampled 9. "J"-flagged data (i.e., values estimated between the DL and the LOQ) are presented on this table 10. "H"-flagged data (sample run out ofholding time) are presented in this table 9378-31 GW Tables (Completion, water levels, detections).xlsx Prepared by: TAO T5 (11-1-22) Metals Checked by: ZJD Table 6 Surface Water VOCs Buncombe County Landfill Alexander, North Carolina Permit No. 1107-CDLF-1998 Permit No. 1107-MSWLF-1996 BLE Project Number J22-9378-31 Sampled by Pace Analytical Services, LLC. October 18, 2022 TEST UNITS LOQ DL NC211 SW-1 SW-2 SW-3 SW4 SW-5 SW-6 SW-7 SW-8 Acetone µg/l 20 5.0 2,000 101 <5.0 5.7 JL 9.7 J 8.1 JL <0.8 Dry 13 J Acrylonitrile AgIl 20 0.8 7 <0.8 <0.8 <0.8 <0.8 <0.8 <0.8 Dry <0.8 Benzene µgIl 1.0 0.4 51 <0.4 <0.4 <0.4 <0.4 <0.4 <0.4 Dry <0.4 Bromochloromethane AgIl 1.0 0.4 NE <0,4 <0.4 <0,4 <0.4 <0.4 <0.4 Dry <0.4 Bromodichloromethane 99ft 1.0 0.4 17 <0.4 <0.4 <0.4 <0.4 <0.4 <0.4 Dry <0.4 Bromoform AgIl 1.0 0.4 120 <0,4 <0.4 <0,4 <0.4 <0.4 <0.4 Dry <0.4 Carbon Disulfide µgIl 1.0 0.4 100 <0.4 <0.4 <0.4 <0.4 <0.4 <0.4 Dry <0.4 Bromomethane (Methylbromide) µg/l 2.0 0.4 0.04 <0,4 <0.4 <0,4 <0.4 <0.4 <0.4 Dry <0.4 Carbon tetrachloride µgFl 1.0 0.4 1.6 <0.4 <0.4 <0.4 <0.4 <0.4 <0.4 Dry <0.4 Chlorobenzene (mono) AgIl 1.0 0.4 800 <0,4 <0.4 <0,4 <0.4 <0.4 <0.4 Dry <0.4 Chloroethane µgIl 2.0 0.4 NE <0.4 <0.4 <0.4 <0.4 <0.4 <0.4 Dry <0.4 Chloroform µg/l 1.0 0.4 2,000 <0,4 <0.4 <0,4 <0.4 <0.4 <0.4 Dry <0.4 Chloromethane (Methylchloride) µgFl 1.0 0.5 96 <0.5 <0.5 <0.5 <0.5 <0.5 <0.5 Dry <0.5 Dibromochloromethane AgIl 1.0 0.4 21 <0,4 <0.4 <0,4 <0.4 <0.4 <0.4 Dry <0.4 1,2-Dibromo-3-chloropropane; DBCP µgIl 1.0 0.4 0.13 <0.4 <0.4 <0.4 <0.4 <0.4 <0.4 Dry <0.4 1,2-Dibromoethane; Ethylene dibromide AgIl 1.0 0.4 0.1 <0,4 <0.4 <0,4 <0.4 <0.4 <0.4 Dry <0.4 Dibromomethane µgFl 1.0 0.4 NE <0.4 <0.4 <0.4 <0.4 <0.4 <0.4 Dry <0.4 1,2-Dichlorobenzene AgIl 1.0 0.4 3,000 <0,4 <0.4 <0,4 <0.4 <0.4 <0.4 Dry <0.4 1,4-Dichlorobenzene µgIl 1.0 0.4 900 <0.4 <0.4 <0.4 <0.4 <0.4 <0.4 Dry <0.4 trans-1,4-Dichloro-2butene µ 2.0 0.5 NE <0,5 <0.5 <0,5 <0.5 <0.5 <0.5 Dry <0.5 1,1-Dichloroethane µgFl 1.0 0.4 100 <0.4 <0.4 <0.4 <0.4 <0.4 <0.4 Dry <0.4 1,2-Dichloroethane AgIl 1.0 0.4 650 <0,4 <0.4 <0,4 <0.4 <0.4 <0.4 Dry <0.4 1,1-Dichloroethene(-ethylene) 99/1 1.0 0.4 20,000 <0.4 <0.4 <0.4 <0.4 <0.4 <0.4 Dry <0.4 cis-1,2-Dichloroethene (-ethylene) As/, 1.0 0.4 720 <0,4 <0.4 <0,4 <0.4 <0.4 <0.4 Dry <0.4 trans-1,2-Dichloroethene (-ylene) µgFl 1.0 0.4 4,000 <0.4 <0.4 <0.4 <0.4 <0.4 <0.4 Dry <0.4 1,2-Dichloro ro ane AgIl 1.0 0.4 31 <0,4 <0.4 <0,4 <0.4 <0.4 <0.4 Dry <0.4 cis-1,3-Dichloropropene (-propylene) µg/1 1.0 0.4 NE <0.4 <0.4 <0.4 <0.4 <0.4 <0.4 Dry <0.4 trans-1,3-Dichloro roene (-propylene) As/, 1.0 0.4 NE <0,4 <0.4 <0,4 <0.4 <0.4 <0.4 Dry <0.4 Ethylbenzene µgFl 1.0 0.4 97 <0.4 <0.4 <0.4 <0.4 <0.4 <0.4 Dry <0.4 2-Hexanone AgIl 10 2.0 NE <2.0 <2.0 <2.0 <2.0 <2.0 <2.0 Dry <2.0 lodomethane µgFl 5.0 0.4 NE <0.4 <0.4 <0.4 <0.4 <0.4 <0.4 Dry <0.4 Dichloromethane (Methylene chloride) As/, 1.0 0.4 11000 <0,4 <0.4 <0,4 <0.4 <0.4 <0.4 Dry <0.4 2-Butanone (Methyl ethyl ketone) µg/l 10 2.0 26,000 <2.0 <2.0 <2.0 <2.0 <2.0 <2.0 Dry <2.0 4-Meth-2-Pentanone AgIl 10 2.0 26000 <2.0 <2.0 <2.0 <2.0 <2.0 <2.0 Dry <2.0 Styrene µgFl 1.0 0.41 NE <0.4 <0.4 <0.4 <0.4 <0.4 <0.4 Dry <0.4 1, 1, 1,2-Tetrachloroedme AgIl 1.0 0.4 NE <0,4 <0.4 <0,4 <0.4 <0.4 <0.4 Dry <0.4 1, 1,2,2-Tetrachloroethane 99/1 1.0 0.4 4.0 <0.4 <0.4 <0.4 <0.4 <0.4 <0.4 Dry <0.4 Tetrachloroethene (-ethylene) µgFl 1.0 0.4 3.3 <0,4 <0.4 <0,4 <0.4 <0.4 <0.4 Dry <0.4 Toluene µgFl 1.0 0.4 11 <0.4 <0.4 <0.4 <0.4 <0.4 <0.4 Dry <0.4 1,1,1-Trichloroethane AgIl 1.0 0.4 200,000 <0,4 <0.4 <0,4 <0.4 <0.4 <0.4 Dry <0.4 1,1,2-Trichloroethane µg/1 1.0 0.4 8.9 <0.4 <0.4 <0.4 <0.4 <0.4 <0.4 Dry <0.4 Trichlomethene (-ethylene) AgIl 1.0 0.4 30 <0,4 <0.4 <0,4 <0.4 <0.4 <0.4 Dry <0.4 Trichlorofluoromethane µgFl 1.0 0.4 67,000 <0.4 <0.4 <0.4 <0.4 <0.4 <0.4 Dry <0.4 1,2,3-Trichloro ro ane AgIl 1.0 0.4 0.001 <0,4 <0.4 <0,4 <0.4 <0.4 <0.4 Dry <0.4 Vinyl acetate µgIl 5.0 1.2 NE <1.2 <1.2 <1.2 <1.2 <1.2 <1.2 Dry <1.2 Vinyl chloride µ911 1.0 0.4 2.4 <0,4 <0.4 <0,4 <0.4 <0.4 <0.4 Dry <0.4 Total Xylenes µgFl 1.0 0.4 670 <0.4 <0.4 <0.4 <0.4 <0.4 <0.4 Dry <0.4 Tetrah drofuran AgIl 5.0 1.0 110,000 NT NT NT NT <1.0 <1.0 Dry <1.0 1,4-Dioxane AgIl 3.0 1.0 80 <1.0 <1.0 12 <1.0 3.4 <1.0 Dry <1.0 Noter• 1. NC2B = North Carolina Surface Water Standards for Class C freshwater under Title 15A Subchapter 2B. per NC DWR Surface Water Quality Standards, Criteria, & In -Stream Target Values (Workbook Dated 7-26-21) 2. NE = Not Established; North Carolina has not established a MCL 3. "J"-flagged data (i.e., values estimated between the DL and the LOQ) are presented on this spreadsheet. 4. Shaded cells indicated exceedances of MCLs 5. LOQ = Limit of Quantitation 6. DL = Method Detection Limit 7. NT = Not Tested 8. DNA = Data Not Available 9. "1T-flagged data denote LCS/LCSD failure 9378-31 SW Tables.xlsx Prepared by: TAO T6 SW VOC (10-18-22) Checked by: ZJD Table 7 Surface Water Field Parameters and Total Metals Buncombe County Landfill Alexander, North Carolina Permit No. 1107-CDLF-1998 Permit No. 1107-MSWLF-1996 BLE Project Number J22-9378-31 Sampled by Pace Analytical Services, LLC. October 18, 2022 TEST UNITS LOQ DL NC2B SW-1 NC2B SW-2 NC2B SW-3 NC2B SW4 NC2B SW-5 NC2B SW-6 NC2B SW-7 NC2B SW-8 pH s.u. (on -site) - - <6.0; >9.0 7.6 <6.0; >9.0 7.3 <6.0; >9.0 7.6 <6.0; >9.0 7.4 <6.0; >9.0 6.8 <6.0; >9.0 8.0 <6.0; >9.0 Dry <6.0; >9.0 8.0 Specific Conductance µmhos/cm (on -site) - - NE 141.0 NE 181.3 NE 1,518 NE 308.1 NE 570.3 NE 174.4 NE Dry NE 252.2 Temperature °C (on -site) - - 29 7.8 29 8.3 29 8.3 29 8.2 29 12.4 29 8.3 29 Dry 29 8.4 Turbidity NTU (on -site) - - 50 9.9 50 7.7 50 27.4 50 81.7 50 667 50 38.2 50 Dry 50 52.3 Hardness mg/1 10 2.0 NE NT NE NT NE NT NE NT NE NT NE NT NE Dry NE NT Total Antimony (Sb) µgd 2.0 0.5 640 <0.5 640 <0.5 640 <0.5 640 <0.5 640 <0.5 640 <0.5 640 Dry 640 <0.5 Total Arsenic (As) µg/l 2.0 1.3 10 <1.3 10 <1.3 10 <1.3 10 <1.3 10 <1.3 10 <1.3 10 Dry 10 <1.3 Total Barium (Ba) µg/l 5.0 1.3 21,000 44 21,000 56 21,000 150 21,000 150 21,000 140 21,000 54 21,000 Dry 21,000 120 Total Beryllium (Be) µgd 0.4 0.15 65 <0.2 65 <0.2 65 <0.2 65 <0.2 65 0.15 J 65 <0.2 65 Dry 65 <0.2 Total Cadmium (Cd) µg/l 0.5 0.13 0.79 <0.1 1.6 <0.1 3.7 <0.1 3.9 <0.1 17 <0.1 5.0 <0.1 52 Dry 4.6 <0.1 Total Chromium (Cr) µg/l 5.0 1.3 177 <1.3 344 <1.3 751 2.9 J 794 5.7 3,160 6.9 1,005 <1.3 9,235 Dry 922 7.8 Total Cobalt (Co) µg/l 5.0 1.3 16 <1.3 16 <1.3 16 10 16 5.4 16 3.0 J 16 <1.3 16 Dry 16 2.6 J Total Copper (Cu) µg/l 5.0 1.3 3.5 <1.3 33 <1.3 18 2.7 J 20 4.6 J 96 4.5 J 26 <1.3 331 Dry 23 5.6 Total Lead (Ph) µg/l 1.0 0.25 13 <0.3 1.3 <0.3 93 <0.3 100 1.4 569 0.61 J 136 <0.3 1,831 Dry 122 0.99 J Total Nickel (Ni) µg/l 5.0 1.3 140 <1.3 278 <1.3 622 18 660 5.4 2,748 10 842 <1.3 8,320 Dry 770 5.2 Total Selenium (Se) µg/l 5.0 1.3 5.0 <1.3 5.0 <1.3 5.0 <1.3 5.0 <1.3 5.0 1.7 J 5.0 <1.3 5.0 Dry 5.0 <1.3 Total Silver (Ag) µg/l 1.0 0.25 0.28 <0.3 1.1 <0.3 5.7 <0.3 6.5 <0.3 117 <0.3 11 <0.3 1,117 Dry 8.8 <0.3 Total Thallium (Tl) µg/l 0.5 0.15 NE <0.2 NE <0.2 NE <0.2 NE <0.2 NE <0.2 NE <0.2 NE Dry NE <0.2 Total Vanadium (V) µg/l 5.0 2.5 NE <2.5 NE <2.5 NE <2.5 NE 9.8 NE 7.6 NE <2.5 NE Dry NE 14 Total Zinc (Zn) 1 10 2.5 35 <2.5 70 <2.5 156 6.2 J 165 12 695 15 211 <2.5 2,091 Dry 193 11 Notes: 1. NC213 = North Carolina Surface Water Standards for Class C freshwater under Title 15A Subchapter 213. per NC DWR Surface Water Quality Standards, Criteria, & In -Stream Target Values (Workbook Dated 7-26-21) Measured values of hardness were utilized to calculate an acute standard at each surface water location for metals highlighted in green. Hardness values were reported in Report of Water Quality Sampling and Analysis 1st Semi -Annual Event 2020 Buncombe County Landfill Alexander, North Carolina prepared by BLE, dated July 13, 2020. 2. NE = Not Established; North Carolina has not established a standard 3. "J"-flagged data (i.e., values estimated between the DL and the LOQ) are presented on this spreadsheet. 4. Shaded cells indicated exceedances of MCLs 5. LOQ = Limit of Quantitation 6. DL = Method Detection Limit 7. NT = Not Tested 8. DNA = Data Not Available 9378-31 SW Tables.xlsx T7 SW Metals (10-18-22) Prepared by: TAO Checked by: ZJD Table 8 Leak Detector and Leachate VOCs Buncombe County Landfill Alexander, North Carolina Permit No. 1107-CDLF-1998 Permit No. 1107-MSWLF-1996 BLE Project Number J22-9378-31 Sampled by Pace Analytical Services, LLC. October 17-18, 2022 TEST UNITS LOQ DL MCL LD-1 LD-2 LD-3 LD-4 LD-5 LD-6 Leachate LD Leachate Pond Acetone µg/1 20 5.0 6,000 6.0 J 15.0 7.1 HJ 9.0 J <5.0 6.3 J <5.0 310 Acrylonmile µ 1 20 0.8 NE <0.8 <0.8 <0.8 <0.8 <0.8 <0.8 <0.8 <0.8 Benzene µg/1 1.0 0.4 LO 1.9 0.79 J <0.4 2.6 <0.4 <0.4 <0.4 <0.4 Bro atchloromethane µ 1 1.0 0.4 NE <0.4 <0.4 <0.4 <0.4 <0.4 <0.4 <0.4 <0.4 Bromodichloromethane 99/1 1.0 0.4 0.6 <0.4 <0.4 <0.4 <0.4 <0.4 <0.4 <0.4 <0.4 Bromoform µ 1 1.0 0.4 4.0 <0.4 <0.4 <0.4 <0.4 <0.4 <0.4 <0.4 <0.4 Carbon Disulfide 99/1 1.0 0.4 700 <0.4 <0.4 <0.4 <0.4 <0.4 <0.4 <0.4 <0.4 Bromomethane (Meth bromide) µ 1 2.0 0.4 10 <0.4 <0.4 <0.4 <0.4 <0.4 <0.4 <0.4 <0.4 Carbon tetrachloride 99/1 1.0 0.4 0.3 <0.4 <0.4 <0.4 <0.4 <0.4 <0.4 <0.4 <0.4 Chlorobeecers,mt o) µ 1 1.0 0.4 50 <0.4 <0.4 <0.4 <0.4 <0.4 <0.4 <0.4 <0.4 Chloroethane µg/1 2.0 0.4 3,000 0.50 J 0.49 J <0.4 <0.4 <0.4 <0.4 <0.4 <0.4 Chloroform µ 1 1.0 0.4 70.0 <0.4 <0.4 <0.4 <0.4 <0.4 <0.4 <0.4 <0.4 Chloromethane (Methylobloride) 99/1 1.0 0.5 3.0 <0.5 <0.5 <0.5 <0.5 <0.5 <0.5 <0.5 <0.5 Dibromochloromethane µ I 1.0 0.4 NE <0.4 <0.4 <0.4 <0.4 <0.4 <0.4 <0.4 <0.4 1,2-13ibromo-3-chloropropane; DBCP 99/1 1.0 0.4 0.04 <0.4 <0.4 <0.4 <0.4 <0.4 <0.4 <0.4 <0.4 1,2-Dibromoethane, Ethylene dibromide µ 1 1.0 0.4 0.02 <0.4 <0.4 <0.4 <0.4 <0.4 <0.4 <0.4 <0.4 Dibromomethane µg/1 1.0 0.4 70.0 (1) <0.4 <0.4 <0.4 <0.4 <0.4 <0.4 <0.4 <0.4 1,2-Dichlorobenzene µ 1 1.0 0.4 20.0 <0.4 <0.4 <0.4 <0.4 <0.4 <0.4 <0.4 <0.4 1,4-Dichlorobenzene 99/1 1.0 0.4 6.0 <0.4 <0.4 <0.4 <0.4 <0.4 <0.4 <0.4 <0.4 trans-1,4-Dichloro-2butene µ 1 2.0 0.5 NE <0.5 <0.5 <0.5 <0.5 <0.5 <0.5 <0.5 <0.5 1,1-Diehloroethane 99/1 1.0 0.4 6.0 0.48 J 0.98 J <0.4 0.45 J <0.4 <0.4 <0.4 <0.4 1,2-Dichlomethane µ 1 1.0 0.4 0.4 <0.4 <0.4 <0.4 <0.4 <0.4 <0.4 <0.4 <0.4 1,1-Dichlomethene(-ethylene) 99/1 1.0 0.4 7.0 <0.4 <0.4 <0.4 <0.4 <0.4 <0.4 <0.4 <0.4 cis-1,2-Dichloroethene(-ethylene) µ 1 LO 0.4 70 <0.4 0.95 J <0.4 <0.4 <0.4 <0.4 <0.4 <0.4 trans-1,2-Dichloroethene (-ylene) 99/1 1.0 0.4 100 <0.4 <0.4 <0.4 <0.4 <0.4 <0.4 <0.4 <0.4 1,2-Dichloro ro ane µ 1 1.0 0.4 0.6 <0.4 <0.4 <0.4 <0.4 <0.4 <0.4 <0.4 <0.4 cis-1,3-Dichloropropene (-propylene) 99/1 1.0 0.4 0.4 <0.4 <0.4 <0.4 <0.4 <0.4 <0.4 <0.4 <0.4 trans-1,3-Dichlor ro ene (-propylene) µ 1 LO 0.4 0.4 <0.4 <0.4 <0.4 <0.4 <0.4 <0.4 <0.4 <0.4 Ethylbeozene µg/1 1.0 0.4 600 <0.4 <0.4 <0.4 <0.4 <0.4 <0.4 <0.4 <0.4 2-Hexanone µ 1 10 2.0 40 <2.0 <2.0 <2.0 <2.0 <2.0 <2.0 <2.0 <2.0 Iodomethane µg/I 5.0 0.4 NE <0.4 <0.4 <0.4 <0.4 <0.4 <0.4 <0.4 <0.4 Dichloromethane (Methylene chloride) µ 1 1.0 0.4 5.0 <0.4 <0.4 <0.4 <0.4 <0.4 <0.4 <0.4 <0.4 2-Butanone (Methyl ethyl ketone) µg/1 10 2.0 4000 <2.0 <2.0 <2.0 <2.0 <2.0 <2.0 <2.0 <2.0 4-Methyl-2-Pentanone µ 1 10 2.0 100 <2.0 <2.0 <2.0 <2.0 <2.0 <2.0 <2.0 <2.0 Styrene 99/1 1.0 0.41 70 <0.4 <0.4 <0.4 <0.4 <0.4 <0.4 <0.4 <0.4 1, 1, 1,2-Tetrachloroethane µ 1 1.0 0.4 1.0 <0.4 <0.4 <0.4 <0.4 <0.4 <0.4 <0.4 <0.4 1, 1,2,2-Tetrachloroethane 99/1 1.0 0.4 NE <0.4 <0.4 <0.4 <0.4 <0.4 <0.4 <0.4 <0.4 Tetrachlomethene (-ethylene) µ I 1.0 0.4 0.7 <0.4 <0.4 <0.4 <0.4 <0.4 <0.4 <0.4 <0.4 Toluene µg/1 1.0 0.4 600 <0.4 <0.4 <0.4 0.58 J <0.4 <0.4 <0.4 <0.4 1,1,1-Trichloroethane µ 1 1.0 0.4 200 <0.4 <0.4 <0.4 <0.4 <0.4 <0.4 <0.4 <0.4 1,1,2-Trlchloroethane 99/1 1.0 0.4 0.6 <0.4 <0.4 <0.4 <0.4 <0.4 <0.4 <0.4 <0.4 Trichloroethene (-ethylene) µ 1 LO 0.4 3.0 <0.4 <0.4 <0.4 <0.4 <0.4 <0.4 <0.4 <0.4 Triohlomfluoromethane 99/1 1.0 0.4 2,000 <0.4 <0.4 <0.4 <0.4 <0.4 <0.4 <0.4 <0.4 1,2,3-Trichlororo ane µ 1 LO 0.4 0.005 <0.4 <0.4 <0.4 <0.4 <0.4 <0.4 <0.4 <0.4 Vinyl acetate 99/1 5.0 1.2 88.0 (i) <1.2 <1.2 <1.2 <1.2 <1.2 <1.2 <1.2 <1.2 Vinyl chloride µ 1 LO 0.4 0.03 <0.4 <0.4 <0.4 1.0 <0.4 <0.4 <0.4 <0.4 Total Xylenes µg/I 1.0 0.4 500 <0.4 <0.4 <0.4 0.45 J <0.4 <0.4 <0.4 <0.4 1 4-dioxane l 1 3.0 1 1.0 1 3.0 1 NT I NT I NT I NT 1 1.1 J I NT I NT I NT Notes: 1. MCL = Maximum Contaminant Level, as established in the NCDEQ, Classifications of Water Quality Standards Applicable to Groundwaters of North Carolina, Section 15A NCAC 2L .0202. Amended Eff. April 1, 2022 2. (i) = Interim Maximum Allowable Concentrations (IMACs). Updated April 1, 2022 3. Shaded cells indicate exccedances of IMACs 4. Shaded cells indicated exceedances of MCLs 5. NE=Not Established; North Carolina has not established a MCL 6. LOQ = Limit of Quantitatlon 7. DL = method Deteaion Limit 8. NT = Not Tested 9. "J"-flagged data (i.e., values estimated between the DL and the LOQ) are presented on this spreadsheet. 10. "IT flagged data denote LCS/LCSD failure 9378-31 Leschate Tables Prepared by TAO T8 LD VOC (10-18-22) Checked by. ZJD Table 9 Leak Detector and Leachate Field Parameters and Total Metals Buncombe County Landfill Alexander, North Carolina Permit No. 1107-CDLF-1998 Permit No. 1107-MSWLF-1996 BLE Project Number J22-9378-31 Sampled by Pace Analytical Services, LLC. October 17-18, 2022 TEST UNITS LOQ DL MCL LD-1 LD-2 LD-3 LD-4 LD-5 LD-6 Leachate LD Leachate Pond pH s.u. units (on -site) <6.5; >8.5 6.8 6.2 6.38 6.45 6.97 6.35 4.8 8.20 Specific Conductance µmhos/cm (on -site) NE 4,685 539.6 723 3,213 735 590 567.8 10,997 Temperature °C (on -site) NE 14.7 15.3 16.6 17.8 19.2 18.3 12.7 16.8 Turbidity NTU (on -site) NE 5.9 3.1 13.64 13.94 6.57 17.94 7.9 32.98 Biologic Oxygen Demand (BOD) mg/1 2.0 0.2 NE NT NT NT NT NT NT NT 91 Chemical Oxygen Demand (COD) mg/1 80 80 NE NT NT NT NT NT NT NT 1600 Nitrates mg/1 0.2 0.05 10 NT NT NT NT NT NT NT <0.05 Sulfates mg/1 1.0 0.25 250 NT NT NT NT NT NT NT 22 Phosphates mg/1 0.1 0.04 NE NT NT NT NT NT NT NT 5.5 Total Antimony (Sb) µg/1 2.0 0.5 1.0 <0.5 <0.5 <0.5 <0.5 <0.5 <0.5 12 Total Arsenic (As) µg/1 2.0 1.3 10 <1.3 <1.3 <1.3 2.6 <1.3 <1.3 7.2 55 Total Barium (Ba) µg/1 5.0 1.3 700 800 170 220 380 25 430 33 660 Total Beryllium (Be) µg/1 0.4 0.15 4.0 <0.15 <0.15 <0.15 0.19 J <0.15 <0.15 0.59 <0.15 Total Cadmium (Cd) µg/1 0.5 0.13 2.0 <0.13 <0.13 <0.13 0.15 J <0.13 <0.13 <0.13 <0.13 Total Chromium (Cr) µg/1 5.0 1.3 10 3.1 J <1.3 <1.3 290 <1.3 <1.3 2.3 J 190 Total Cobalt (Co) µg/1 5.0 1.3 1.0 110 24 4.0 J 27 3.8 J 50 52 37 Total Copper (Cu) µg/1 5.0 1.3 1,000 <1.3 <2.5 <1.3 66 <1.3 <1.3 15 <1.3 Total Lead (Pb) µg/1 1.0 0.25 15 <0.25 <0.25 <0.25 0.73 J <0.25 <0.25 <0.25 <0.25 Total Mercury (Hg) µg/1 NT NT 1.0 NT NT NT NT NT NT NT NT Total Nickel (Ni) µg/1 5.0 1.3 100 67 4.5 J 2.5 J 100 5.7 2.3 J 380 140 Total Selenium (Se) µg/1 5.0 1.3 20 4.0 J <1.3 <1.3 3.2 J <1.3 <1.3 27 13 J Total Silver (Ag) µg/1 1.0 0.25 20 <0.25 <0.25 <0.25 <0.25 <0.25 <0.25 <0.25 <0.25 Total Thallium (Tl) µg/1 0.5 0.15 2 <0.15 <0.15 <0.15 <0.15 <0.15 <0.15 0.26 J <0.15 Total Vanadium (V) µg/1 5.0 2.5 7 <2.5 <2.5 <2.5 8.6 <2.5 <2.5 <2.5 71 Total Zinc (Zn) µ /1 10 2.5 1,000 <2.5 <2.5 <2.5 8.2 J <2.5 <2.5 170 13 J Notes: 1. MCL = Maximum Contaminant Level, as established in the NCDEQ, Classifications of Water Quality Standards Applicable to Groundwaters of North Carolina, Section 15A NCAC 2L .0202. Amended Eff. April 1, 2022 2. (i) = Interim Maximum Allowable Concentrations (IMACs). Updated April 1, 2022 3. Shaded cells indicate exceedances of IMACs 4. Shaded cells indicated exceedances of MCLs 9378-31 Leachate Tables T9 LD Metals (10-18-22) 5. NE = Not Established; North Carolina has not established a MCL 6. LOQ = Limit of Quantitation 7. DL = Method Detection Limit 8. NT = Not Tested 9. "J"-flagged data (i.e., values estimated between the DL and the LOQ) are presented on this spreadsheet. Prepared by: TAO Checked by: ZJD FIGURES