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Home My WebLink About5002_JacksonCounty_GWMReport_DIN26368_20151014 Prepared for Jackson County Solid Waste Department Project Number 2040.3021 Prepared by Altamont Environmental, Inc. 231 Haywood Street Asheville, NC 28801 828.281.3350 Fall 2015 Semiannual Water Quality Monitoring Report Jackson County Closed Municipal Solid Waste Landfill Permit # 50-02 February 10, 2016 Fall 2015 Semiannual Water Quality Monitoring Report February 10, 2016 Jackson County Closed Municipal Solid Waste Landfill Page iii P:\Jackson County\Dillsboro GW\Reports\2015\Fall\5002Oct2015Semiannual Water Quality Report160210.Docx Table of Contents 1.0 Introduction .................................................................................................................... 1 2.0 Semiannual Monitoring .................................................................................................. 2 2.1 Groundwater, Surface Water, and Leachate Sampling .................................................2 2.1.1 Monitoring Well Purging and Sampling Methods ..............................................2 2.1.2 Surface Water Sampling Methods ....................................................................3 2.1.3 Leachate Sampling Methods ............................................................................3 2.2 Sample Handling, Documentation, and Analysis...........................................................3 3.0 Findings .......................................................................................................................... 5 3.1 Analytical Results ..........................................................................................................5 3.1.1 Groundwater .....................................................................................................6 3.1.2 Surface Water ...................................................................................................7 3.1.3 Leachate ...........................................................................................................7 3.1.4 Domestic Well Groundwater .............................................................................7 3.2 Groundwater Flow Direction ..........................................................................................8 4.0 Summary ........................................................................................................................ 9 4.1 Groundwater Quality ......................................................................................................9 4.1.1 Monitoring Wells ...............................................................................................9 4.1.2 Domestic Wells .............................................................................................. 10 4.2 Surface Water Quality ................................................................................................. 11 4.3 Leachate Quality ......................................................................................................... 11 5.0 Future Activities ........................................................................................................... 12 6.0 References .................................................................................................................. 13 Fall 2015 Semiannual Water Quality Monitoring Report February 10, 2016 Jackson County Closed Municipal Solid Waste Landfill Page iv P:\Jackson County\Dillsboro GW\Reports\2015\Fall\5002Oct2015Semiannual Water Quality Report160210.Docx Figures 1. Site Location Map 2. Sample Location Map 3. Generalized Groundwater Flow Direction 4. Hydrograph and 1,4-Dichlorobenzene Concentration vs. Time—Monitoring Well MW-01 5. Hydrograph and Benzene Concentration vs. Time—Monitoring Well MW-01 6. Hydrograph and Tetrachloroethene Concentration vs. Time—Monitoring Well MW-01 7. Hydrograph and 1,4-Dichlorobenzene Concentration vs. Time—Monitoring Well MW-03 8. Hydrograph and Benzene Concentration vs. Time—Monitoring Well MW-04 9. Hydrograph and Vinyl Chloride Concentration vs. Time—Monitoring Well MW-04 10. Hydrograph and 1,4-Dichlorobenzene Concentration vs. Time—Monitoring Well MW-05R 11. Hydrograph and Benzene Concentration vs. Time—Monitoring Well MW-05R 12. Hydrograph and Vinyl Chloride Concentration vs. Time—Monitoring Well MW-05R 13. Hydrograph and 1,1-Dichloroethane Concentration vs. Time—Monitoring Well MW-06 14. Hydrograph and 1,4-Dichlorobenzene Concentration vs. Time—Monitoring Well MW-06 15. Hydrograph and Benzene Concentration vs. Time—Monitoring Well MW-06 16. Hydrograph and 1,4-Dichlorobenzene Concentration vs. Time—Monitoring Well MW-07 17. Hydrograph and Benzene Concentration vs. Time—Monitoring Well MW-07 18. Hydrograph and Vinyl Chloride Concentration vs. Time—Monitoring Well MW-07 Tables 1. Summary of Laboratory Analyses Performed on Samples 2. Summary of Detected Parameters 3. Solid Waste Section Limits Exceedances Notifications 4. Water Quality Standards Exceedances Notifications 5. Well Construction Details and Corresponding Elevations 6. Mass Removal Calculation for Volatile Organic Compounds (VOCs) Detected in the Leachate Sample Appendices A. Well Sampling Logs and Equipment Documentation & Instrument Calibration Data Sheets B. Reports of Laboratory Analysis, Chain-of-Custody Documentation, and Certificates of Analysis C. Environmental Monitoring Form and Electronic Submittal of Environmental Monitoring Data 5002Oct2015 (electronic submittal only) Fall 2015 Semiannual Water Quality Monitoring Report February 10, 2016 Jackson County Closed Municipal Solid Waste Landfill Page 1 P:\Jackson County\Dillsboro GW\Reports\2015\Fall\5002Oct2015Semiannual Water Quality Report160210.Docx 1.0 Introduction The Jackson County Solid Waste Department maintains a closed Municipal Solid Waste Landfill (MSWLF) located approximately 0.75 miles west of Dillsboro, North Carolina, on the northeast side of Old Dillsboro Road (Old U.S. Highway 74; Figure 1). The water quality monitoring at the landfill is governed by the North Carolina Department of Environmental Quality (DEQ), formerly known as The North Carolina Department of Environment and Natural Resources (DENR), Division of Waste Management (DWM), Solid Waste Section (SWS), under Permit No. 50-02 issued to Jackson County. The landfill permit requires semiannual monitoring of groundwater and surface water quality. Over time, groundwater quality monitoring indicated persistent low-level exceedances of constituents in groundwater samples. In response to the continued exceedances of analyzed constituents, an Assessment of Corrective Measures (ACM) was completed and a Corrective Action Plan (CAP) was implemented. The implemented remedy includes the extraction of leachate through dedicated submersible pumps installed within the landfill gas extraction wells and disposal of the leachate into the Tuckaseigee Water & Sewer Authority (TWSA) collection system. In addition to leachate extraction, groundwater natural attenuation parameters are monitored and natural attenuation processes are evaluated. The remedy was implemented in a phased approach with full implementation occurring on September 6, 2013. This report serves as the second semiannual water quality monitoring report for 2015 and is the ninth report following approval of the CAP. This report provides an evaluation of groundwater and surface water quality. The water quality monitoring network is presented on Figure 2. The generalized groundwater flow direction in underlying aquifer system (Figure 3) is also provided in the report. In addition to groundwater and surface water monitoring, this report includes VOC analysis of the extracted leachate. The water samples are collected from selected monitoring points during the spring and again in the fall of each year. The analytical suites associated with site groundwater samples for the current sampling event (Table 1) are as follows:  Appendix II Metals  Appendix II Volatile Organic Compounds (VOCs)  Chlorinated Herbicides  Monitored natural attenuation (MNA) parameters: alkalinity, biochemical oxygen demand (BOD), chemical oxygen demand (COD), chloride, carbon dioxide, cyanide, ethane, ethene, ferrous iron, hydrogen, methane, nitrogen, nitrate, nitrite, sulfate, sulfide, total organic carbon (TOC), and volatile fatty acids. The fall 2015 sampling event was performed and is being reported in accordance with requirements stipulated in the North Carolina DEQ Solid Waste Management Rules codified under Title 15A, Subchapter 13B of the North Carolina Administrative Code (15A NCAC 13B). Fall 2015 Semiannual Water Quality Monitoring Report February 10, 2016 Jackson County Closed Municipal Solid Waste Landfill Page 2 P:\Jackson County\Dillsboro GW\Reports\2015\Fall\5002Oct2015Semiannual Water Quality Report160210.Docx 2.0 Semiannual Monitoring 2.1 Groundwater, Surface Water, and Leachate Sampling The closed MSWLF monitoring wells (MW-01, MW-02, MW-03, MW-04, MW-05R, MW-06, and MW-07), surface water sample locations (SW-01 and SW-02), two domestic wells (DW-01 and DW-02), and one leachate sample (LT-01) location were sampled on October 13, and 14, 2015 by Altamont Environmental, Inc. (Altamont). Static groundwater level measurements and all field parameter data are included on the well sampling logs in Appendix A. The full suite of groundwater and surface water analytical results is presented in the laboratory analytical reports in Appendix B. The field parameter measurements and analytical results are tabulated in the Electronic Data Deliverable (EDD) in Appendix C. The monitoring wells, surface water sample locations, domestic wells, and leachate sample locations are depicted on Figure 2. 2.1.1 Monitoring Well Purging and Sampling Methods Prior to sampling the monitoring wells, the static water level was gauged in each well and an initial round of field parameters consisting of pH, specific conductivity, dissolved oxygen (DO), turbidity, temperature, and oxidation reduction potential (ORP) were measured. Static water level measurements and all field parameter data are included on the well sampling logs in Appendix A. Altamont personnel used either low-flow techniques or disposable bailers to purge the monitoring wells and collect groundwater samples. Total depth, condition of the casing, and the groundwater recharge rate determined the purging and sample collection method employed at each monitoring well. 2.1.1.1 Monitoring Wells Monitoring wells MW-03, MW-04, MW-06, and MW-07 were purged using low-flow techniques in accordance with the procedures described in the US Environmental Protection Agency’s (EPA’s) Low-Flow (Minimal Drawdown) Ground-Water Sampling Procedures (EPA 1996). During purging, the pH, specific conductivity, DO, ORP, turbidity, and temperature were measured and recorded approximately every 3 minutes. Well purging continued until these parameters generally stabilized for three consecutive readings. The required stabilization criteria were as follows:  pH values within +/- 0.1 unit  Specific conductivity values within +/- 5 percent  Temperature, DO, and turbidity values within +/- 10 percent  ORP values within +/- 10 millivolts Once the parameters had stabilized, a groundwater sample was collected using laboratory-supplied sample bottles by a technician wearing a new pair of nitrile gloves. Monitoring well MW-01 was purged dry with a disposable bailer and the groundwater sample was collected following recharge on October 13, 2015. Monitoring well MW-02 was purged dry with a disposable bailer and the groundwater sample was collected following recharge on October 14, 2015. Monitoring well MW-05R was purged dry with a disposable bailer on October 13, 2015 and the groundwater sample was collected following recharge the next day, October 14, 2015. Fall 2015 Semiannual Water Quality Monitoring Report February 10, 2016 Jackson County Closed Municipal Solid Waste Landfill Page 3 P:\Jackson County\Dillsboro GW\Reports\2015\Fall\5002Oct2015Semiannual Water Quality Report160210.Docx 2.1.2 Surface Water Sampling Methods Surface water samples SW-01 and SW-02 were collected at designated locations from the Tuckasegee River, which is southwest of the landfill. Surface water sample SW-01 is representative of surface water quality upstream of the landfill, while SW-02 is representative of surface water quality downstream from the landfill. One round of field parameters, consisting of temperature, pH, specific conductivity, DO, ORP, and turbidity, were measured and recorded at each surface-water sampling location prior to collecting the sample (Appendix A). The surface water samples were collected in laboratory-provided sample containers by a technician wearing a new pair of nitrile gloves. 2.1.3 Leachate Sampling Methods Dedicated bottom-loading, air-powered pumps, air pressure lines, and a leachate forcemain collection system are installed at the landfill. Pumps are installed in landfill gas extraction wells EW-1R, EW-2R, EW-3R, EW-4, EW-5, EW-6, EW-7, EW-8, EW-9, and EW-10. The gas extraction well locations are presented on Figure 2. The leachate is pumped from the wells into a flow equalization tank which is connected to the Tuckaseigee Water & Sewer Authority wastewater collection system. The flow equalization tank is situated to the northeast of the landfill adjacent to the existing landfill gas flare. A grab sample of leachate (LT-01) was collected by operating the leachate extraction pumps and taking a sample as the leachate entered the flow equalization tank. One round of field parameters, consisting of temperature, pH, specific conductivity, DO, ORP, and turbidity, was measured and recorded after collecting the sample (Appendices A and C). 2.2 Sample Handling, Documentation, and Analysis Field parameters and additional observations pertaining to the closed MSWLF sampling locations are provided on sampling logs (Appendix A). Following sample collection, each groundwater, surface water, and leachate sample was immediately placed on ice in a sample cooler for transport to Prism Laboratories (Prism), a laboratory located in Charlotte, North Carolina. Microseeps, Inc. laboratory was subcontracted by Prism and completed a portion of the natural attenuation parameters analyses. The groundwater samples collected from the monitoring wells were analyzed for the following parameters:  Appendix II Metals using Methods 6020A and 7470A  Appendix II Volatile Organic Compounds (VOCs) using Method 8260B  Chlorinated Herbicides using Method 8151A  Natural Attenuation Parameters:  Alkalinity using Standard Method (SM) 2320B  BOD, 5-day using SM 5210B  Carbon dioxide, hydrogen, ethane, ethene, and methane using Analytical Method (AM) AM20GAX  COD using SM 5220D  Chloride using SM 9056A  Cyanide using SM 4500-CN-E  Ferrous iron using SM 3500-Fe D  Nitrate as N, using Method 9056A.  Sulfide using SM 4500-S F Fall 2015 Semiannual Water Quality Monitoring Report February 10, 2016 Jackson County Closed Municipal Solid Waste Landfill Page 4 P:\Jackson County\Dillsboro GW\Reports\2015\Fall\5002Oct2015Semiannual Water Quality Report160210.Docx  Sulfate using Method 9056A.  TOC using SM 9060A  Volatile Fatty Acids using AM23G The surface water samples were analyzed for Appendix II Metals and VOCs, cyanide, chlorinated herbicides, and sulfide. The leachate sample was analyzed for Appendix II VOCs. Two domestic well samples were analyzed for VOCs using EPA method 524.2. Proper chain-of-custody documentation procedures were followed during collection and transportation of each sample (Appendix B). Three trip blank samples for quality control/quality assurance purposes were included in the sample coolers. Two were analyzed for Appendix II VOCs by EPA Method 8260 and one was analyzed for VOCs by EPA Method 524.2, which reflected the domestic well samples collected. The reports of laboratory analysis are provided in Appendix B. Laboratory analyses performed on the samples are summarized in Table 1. Fall 2015 Semiannual Water Quality Monitoring Report February 10, 2016 Jackson County Closed Municipal Solid Waste Landfill Page 5 P:\Jackson County\Dillsboro GW\Reports\2015\Fall\5002Oct2015Semiannual Water Quality Report160210.Docx 3.0 Findings 3.1 Analytical Results The laboratory analytical results and field parameter data for the groundwater samples (from monitoring wells MW-01 through MW-07), surface water samples (SW-01 and SW-02), domestic well samples (DW-01 and DW-02), and the leachate sample (LT-01) collected at the landfill are included in Appendices A and B in hard copy and also in Appendix C, in the EDD format, which was specified by the SWS of the DWM in a memorandum dated October 27, 2006 and its addendum dated February 23, 2007, as well as in the May 5, 2010 update. As stipulated in the DWM documents referenced above, all laboratory analytical results were reported and appropriately qualified. Non-detections, which are values reported by the laboratory as below method detection limits (MDLs), are tabulated on Table 2 and in the EDD at MDL levels, and are qualified with the “U” qualifier. The MDL is the minimum concentration of a substance that can be measured and reported by a laboratory with 99 percent confidence that the constituent concentration is greater than zero. All detections (values above the MDL) were compared to constituent-specific Solid Waste Section Limits (SWSLs) established by DEQ. The SWSL is defined as the lowest concentration of a constituent in a sample that can be quantitatively determined with suitable precision and accuracy. A “J” qualifier is used by the laboratory for parameters that are detected at estimated concentrations greater than the MDL but less than the laboratory’s method reporting limit (MRL). The MRL is the minimum concentration of a target analyte that can be accurately determined by the referenced method. If the reported concentration is greater than the laboratory MDL and MRL but less than the SWSL, the analytical result is qualified as estimated, and is flagged with a “J” qualifier (italicized J-flag) by Altamont per SWS reporting requirements. In addition to non- detects, detected concentrations of constituents below the applicable SWSLs are included in Table 2. They are not, however, reported in the text of this report, unless they exceed their applicable North Carolina water quality standards (defined below). Detected concentrations of constituents in groundwater samples were compared to the applicable North Carolina groundwater quality standards. For most constituents, this standard is the 2L standard, from 15A NCAC 2L.0202. Detected concentrations of analytes in groundwater with no established 2L standard were compared either to the interim maximum allowable concentrations (IMACs) for Class GA and GSA groundwater (in accordance with 15A NCAC 02L .0202 [c]) or Groundwater Protection Standards (GWPS), pursuant to 15A NCAC 13B.1634. Detections of analytes in surface-water samples were compared to the surface-water quality standards described in 15A NCAC 2B (2B standards). Table 2 presents the summary of detected compounds only. Table 3 presents all analytical results that were above the applicable SWSLs. Table 4 presents only the concentrations of analytes detected in groundwater and/or surface water samples that exceeded their respective 2L standards (including IMACs, if applicable), GWPSs, or 2B standards. In the EDD (Appendix C) the identification of a well (“WELL ID”) consists of the name of the well prefaced by the un-hyphenated permit number for the facility. For example, monitoring well MW-01 is identified on the tables as 5002-MW01. In the tables and figures, however, the identification of a well consists of the name of the well without the permit number associated with the facility. Fall 2015 Semiannual Water Quality Monitoring Report February 10, 2016 Jackson County Closed Municipal Solid Waste Landfill Page 6 P:\Jackson County\Dillsboro GW\Reports\2015\Fall\5002Oct2015Semiannual Water Quality Report160210.Docx 3.1.1 Groundwater Analytical results for groundwater samples collected from the monitoring wells are discussed in the following sections. 3.1.1.1 Metals Seventeen metals were detected in the groundwater samples collected from one or more of the monitoring wells. Nine detected metals (barium, beryllium, cadmium, chromium, cobalt, copper, lead, vanadium, and zinc) were present in samples collected from one or more of the monitoring wells at concentrations above the associated SWSLs (Tables 2 and 3). Six metals (cadmium, chromium, cobalt, lead, thallium, and vanadium) were detected in samples collected from one or more of the monitoring wells at concentrations above their associated groundwater quality standards (Tables 2 and 4). 3.1.1.2 VOCs Ten VOCs were detected in the groundwater samples collected from one or more of the monitoring wells (Table 2). Seven VOCs (1,1-dichloroethane, 1,4-dichlorobenzene, benzene, chlorobenzene, cis-1,2- dichloroethene, and vinyl chloride) were detected at concentrations at or above their respective SWSLs (Tables 2 and 3). Five VOCs (1,1-dichloroethane, 1,4-dichlorobenzene, benzene, tetrachloroethene, and vinyl chloride) were detected at concentrations above their respective 2L standards (Tables 2 and 4). Concentration-versus-time graphs were created for samples from those monitoring wells that had VOC concentrations over their 2L standards. The graphs are shown on Figures 4 through 18. 3.1.1.3 Chlorinated Herbicides There were no chlorinated herbicides detected in any groundwater samples collected from the monitoring wells. 3.1.1.4 Natural Attenuation Parameters Groundwater samples collected from all monitoring wells were analyzed for additional parameters as follows: alkalinity, BOD, COD, carbon dioxide, chloride, cyanide, ethane, ethene, hydrogen, iron (ferrous), methane, nitrogen, nitrate, sulfate, sulfide, TOC, and Volatile Fatty Acids (Table 1). All parameters were detected in samples collected from one or more monitoring wells (Table 2). Ferrous iron was the only parameter detected above its applicable 2L groundwater standard in one or more monitoring wells. The results will be used in a comprehensive Corrective Action Evaluation Report to be submitted in the fall of 2016, which is five years after the CAP was approved by the SWS. 3.1.1.5 Field Parameters During groundwater sampling on October 13 and 14, 2015 pH readings were obtained. The pH readings obtained from samples collected from all monitoring wells, except for monitoring well MW-05R, were below the acceptable pH range of 6.5 to 8.5 SU specified in 15A NCAC 02L .0202[c] (Tables 2 and 4). The highest turbidity (417 nephelometric turbidity units [NTUs]) was measured in the groundwater sample collected from well MW-05R. The lowest turbidity was measured (0.32 NTU) in the groundwater sample collected from well MW-04. Fall 2015 Semiannual Water Quality Monitoring Report February 10, 2016 Jackson County Closed Municipal Solid Waste Landfill Page 7 P:\Jackson County\Dillsboro GW\Reports\2015\Fall\5002Oct2015Semiannual Water Quality Report160210.Docx 3.1.2 Surface Water The following sections summarize analytical results associated with the two surface water samples collected during the fall 2015 sampling event. 3.1.2.1 Metals Ten metals (barium, cadmium, chromium, cobalt, copper, lead, mercury, nickel, thallium, and zinc) were detected in one or both surface water samples collected (Table 2). All concentrations were below their respective SWSLs. Mercury was detected above its 2B surface water standard in both surface water samples. 3.1.2.2 VOCs VOCs were not detected in either of the collected surface water samples. 3.1.2.3 Chlorinated Herbicides Chlorinated herbicides were not detected in either of the collected surface water samples. 3.1.2.4 Cyanide and Sulfide Neither cyanide nor sulfide was detected in either of the collected surface water samples. 3.1.2.5 Field Parameters During the surface water sample collection on October 14, 2015 pH readings were obtained. The pH readings measured in both samples were within the 2B standard range established at 6.0 SU to 9.0 SU. Turbidity measured in surface water sample SW-02 was above the applicable 2B standard, which is established at 50 NTU for the receiving water in streams not designated as trout waters. Due to high water levels this sample could not be safely collected from a running portion of the river and had to be collected from stagnant water. DO was measured at 10.85 mg/L in SW-02 and 11.01 mg/L in SW-01. The 2B standard indicates “not less than 5.0 mg/L”. 2B standards do not exist for the remaining field parameters measured in the surface water samples. 3.1.3 Leachate The leachate sample (LT-01) was collected from the flow equalization tank and analyzed for Appendix I VOCs only. Eleven VOCs were detected in the collected sample (Table 2). Five VOCs (1,4-dichlorobenzene, benzene, chlorobenzene, ethylbenzene, and naphthalene) were found at concentrations above their respective SWSLs (Tables 2 and 3). 3.1.4 Domestic Well Groundwater The domestic well groundwater samples (DW-01 and DW-02) were collected and analyzed for VOCs using EPA method 524.2. None of the analyzed VOCs were detected at concentrations above their laboratory method detection limits. One of the field parameters in domestic well sample DW-02, pH, was measured on October 13, 2015 and the reading was below (6.02) the pH range of 6.5 to 8.5 SU established as the 2L standard. Turbidity for domestic well samples DW-01 and DW-02 was measured at 23.20 NTU and 22.16 NTU, respectively. Fall 2015 Semiannual Water Quality Monitoring Report February 10, 2016 Jackson County Closed Municipal Solid Waste Landfill Page 8 P:\Jackson County\Dillsboro GW\Reports\2015\Fall\5002Oct2015Semiannual Water Quality Report160210.Docx 3.2 Groundwater Flow Direction Groundwater levels in the saprolite and bedrock are monitored at the closed MSWLF. Three bedrock monitoring wells, MW-01, MW-02, and MW-06, are located in the northern and northwestern portions of the site (Figure 3 and Table 5). Bedrock monitoring well (MW-07) is located south of the landfill (Figure 3). The fall 2015 water level data collected from these four bedrock wells were used to determine generalized bedrock groundwater flow direction, which is to the south-southwest (Figure 3). Monitoring wells MW-03, MW-04, and MW-05R (Figure 3), located in the central and southern parts of the landfill, are in saprolite (including partially weathered rock [PWR]) water-bearing zone). The fall 2015 water- level data collected from monitoring wells MW-03, MW-04, and MW-05R (Table 5) indicate that groundwater flow direction in the saprolite and PWR is also generally to the southwest, toward the Tuckasegee River (Figure 3). Fall 2015 Semiannual Water Quality Monitoring Report February 10, 2016 Jackson County Closed Municipal Solid Waste Landfill Page 9 P:\Jackson County\Dillsboro GW\Reports\2015\Fall\5002Oct2015Semiannual Water Quality Report160210.Docx 4.0 Summary The second semiannual water quality monitoring event of 2015 was conducted on October 13 and 14, 2015 at the Jackson County closed MSWLF. Tables 2, 3, and 4 of this report, Reports of Laboratory Analysis (Appendix B), and the EDD (Appendix C) provide detailed analytical results and field data summarizing the groundwater and surface water quality at the landfill. 4.1 Groundwater Quality 4.1.1 Monitoring Wells 4.1.1.1 Metals Six metals (cadmium, chromium, cobalt, lead, thallium, and vanadium) were detected at concentrations above their respective water quality standards in the groundwater samples collected from one or more of the monitoring wells during the fall 2015 water quality monitoring event (Tables 2 and 4). Cadmium was detected only in the sample collected from monitoring well MW-01 at a concentration of 15 µg/L, which is in excess of the 2L standard of 2 µg/L. Cadmium exceeded its 2L standard in this monitoring well during the spring 2015 event. Historical concentrations have ranged from 0.9 J µg/L to 15 ug/L, with the maximum concentration of 15 µg/L occurring during this sampling event. Chromium exceeded its 2L groundwater standard of 10 µg/L in groundwater samples collected from monitoring wells MW-02 and MW-05R. Historical concentrations of chromium in MW-02 range from 0.42 J µg/L to 44 µg/L, the highest being recorded during this sampling event. Historical concentrations in MW-05R range from 0.53 J µg/L to 68.3 µg/L, the highest recorded during the October 2012 monitoring event. During this event, MW-02 and MW-05R had turbidity readings of 241.4 and 417.0 NTUs, respectively. Samples collected with high turbidity readings may result in elevated metals concentrations, due to the high amount of suspended solids. Cobalt was detected in six groundwater samples at concentrations ranging between 3.1 µg/L (estimated with “J” flag) in MW-04 to 150 µg/L in MW-01, exceeding the applicable IMAC of 1 µg/L. Cobalt has historically been present above its water quality standard in the groundwater samples from at least five of the seven monitoring wells. Historically, cobalt concentrations in MW-01 have ranged from 27.4 µg/L to 321 µg/L, the highest being recorded during the October 2013 sampling event. The lead concentration in the sample collected from MW-02 was equal to the applicable 2L standard of 15 µg/L. This event was the first time lead was detected in this monitoring well. This lead exceedance is likely due to the unusually high turbidity recorded for the sample collected from monitoring well MW-02. Thallium was detected in five groundwater samples at concentrations ranging from 0.21 µg/L (estimated with “J” flag) in MW-07, to 2.0 in MW-02 (flagged with italicized “J”). While all detections of thallium were below the SWSL, five of the seven detections exceeded the IMAC groundwater standard of 0.2 µg/L. Thallium has historically been present in groundwater samples collected from six of the seven monitoring wells. Vanadium was detected in monitoring wells MW-02 and MW-05R at concentrations of 61 µg/L and 24 µg/L (flagged with italicized “J”), respectively. Both detections exceed the IMAC groundwater standard of 0.3 µg/L. Prior to this sampling event, vanadium was detected during two other sampling events in monitoring well MW-02. Both prior vanadium detections were below the IMAC standard. This vanadium exceedance is likely due to the unusually high turbidity recorded for the sample collected from MW-02. Vanadium has exceeded IMAC standards in MW-05R during three prior sampling events, with concentrations ranging from 11.4 J µg/L to 89.0 µg/L. Historically, this well has had turbidity readings that range from 60.15 NTUs to 850.8 NTUs. Fall 2015 Semiannual Water Quality Monitoring Report February 10, 2016 Jackson County Closed Municipal Solid Waste Landfill Page 10 P:\Jackson County\Dillsboro GW\Reports\2015\Fall\5002Oct2015Semiannual Water Quality Report160210.Docx Turbidity was measured at a range of 0.32 NTU (the lowest) detected in monitoring well MW-04 to 417 NTUs (the highest) in well MW-05R. Turbidity in monitoring well MW-02 was recorded at 241.4 NTUs, which is the highest turbidity reading recorded for MW-02 when compared to historical results. Turbidity readings for MW- 02 have ranged between 0.00 NTUs and 53.34 NTUs prior to this sampling event. The high turbidity for MW- 02 may explain the unusually higher metals concentrations detected in MW-02 during this sampling event. 4.1.1.2 VOCs Five VOCs (1,1-dichloroethane, 1,4-dichlorobenzene, benzene, tetrachloroethene, and vinyl chloride) were detected at concentrations above their respective 2L standards (Tables 2 and 4). Concentration-versus-time graphs were created for samples from those monitoring wells that had VOC concentrations over their 2L standards during fall 2015 sampling event. The graphs are shown on Figures 4 through 18. 1,1-dichloroethane was detected in MW-06 at a concentration of 6.4 µg/L in excess of the 2L standard of 6 µg/L. This result is consistent with historic data (Figure 13). 1,4-dichlorobenzene exceeded the 2L standard of 6 µg/L in five groundwater samples. Concentrations of 1,4-dichlorobenzene have remained consistent over time (Figures 4, 7, 10, 14, 16). Concentrations of this VOC fluctuate based on water levels in monitoring well MW-03, where concentrations are higher when the groundwater elevation is lower (Figure 7). Benzene was detected in five groundwater samples (MW-01, MW-04, MW-05R, MW-06, and MW-07) during this sampling event at concentrations above the 2L standard. Review of the trend graphs (Figures 5, 8, 11, 15 and 17) shows concentrations to be consistent over time, with the exception of MW-01 which shows a decrease in benzene concentrations. Tetrachloroethene was detected in one monitoring well (MW-01), at a concentration of 0.85 µg/L (flagged with italicized “J”). This concentration is below the SWSL but above the 2L standard of 0.7 µg/L and is consistent with historic data from MW-01. Vinyl chloride was detected in excess of its 2L standard in two groundwater samples (MW-04 and MW-05R) collected during the fall 2015 sampling event. Review of Figure 9 shows vinyl chloride concentrations in MW- 04 have remained relatively consistent over time. Figure 12 shows that since MW-05R was first sampled in April 2012, concentrations have generally increased slightly. A review of historical groundwater data indicates that these five VOCs (1,1-dichloroethane, 1,4- dichlorobenzene, benzene, tetrachloroethene, and vinyl chloride) have been detected at relatively consistent concentrations for the past several years. Historical surface water samples from the Tuckasegee River, which likely receives discharge from the saprolite groundwater-bearing zone, have consistently shown no detections of these compounds, or any other VOCs. 4.1.1.3 Other Constituents The pH results obtained for all sampled wells, aside from monitoring well MW-05R, were outside the acceptable pH range (6.5 to 8.5 SU) established as the 2L standard. Although the results were outside the acceptable range, they are consistent with historic pH readings and ranges that may be expected to be naturally occurring in the region. No other analytes were detected at or above groundwater standards in the samples collected from the monitoring wells. 4.1.2 Domestic Wells VOCs were not detected in the groundwater sample collected from either of the domestic wells (DW-01 and DW-02). Fall 2015 Semiannual Water Quality Monitoring Report February 10, 2016 Jackson County Closed Municipal Solid Waste Landfill Page 11 P:\Jackson County\Dillsboro GW\Reports\2015\Fall\5002Oct2015Semiannual Water Quality Report160210.Docx 4.2 Surface Water Quality Ten metals were detected in one or both surface water samples SW-01 (upstream of the landfill) and SW-02 (downstream of the landfill). Mercury was detected at concentrations of 0.016 J µg/L and 0.012 J µg/L for surface water samples SW-01 and SW-02, respectively. These concentrations equaled or exceeded the 2B surface water standard of 0.012 µg/L for mercury. All other detected metals were below their respective 2B surface water standards. Sulfide was detected in SW-01 and SW-02 at concentrations of 1,400 µg/L and 1,600 µg/L, respectively. These concentrations exceed the SWSL for sulfide. Sulfide does not have an established 2B surface water standard. Since the upstream sample concentrations are essentially equal to the downstream sample concentrations, the analyses support that the groundwater discharging from under the landfill into the Tuckasegee River is not impacting surface water quality. Turbidity in surface water sample SW-02 exceeded the 2B surface water standard of 50 NTUs. This exceedance can be attributed to high river levels forcing sampling personnel to collect the sample from stagnant water near the bank of the river. 4.3 Leachate Quality Six VOCs (1,4-dichlorobenzene, benzene, chlorobenzene, naphthalene, o-xylene, and tetrahydrofuran) were found at concentrations above their respective SWSLs (Tables 2 and 3). On September 1, 2012, leachate extraction was initiated following installation of the leachate extraction pumps in 10 Landfill Gas (LFG) extraction wells. Between April 21, 2015 and October 13, 2015, approximately 36,720 gallons of leachate were discharged through a permanent connection to the TWSA (Table 6). Since leachate extraction began, a total of approximately 256,685 gallons of leachate has been extracted and/or discharged from the landfill (Table 6). In fall 2013 the active portion of the approved correction action remedy was initiated. Based on the leachate analytical results for the sample collected on October 13, 2015, Altamont estimates that 0.03981 pounds of VOCs were removed with the extracted leachate between the April 2015 and the October 2015 sampling events. Mass removal calculations are included in Table 6. Fall 2015 Semiannual Water Quality Monitoring Report February 10, 2016 Jackson County Closed Municipal Solid Waste Landfill Page 12 P:\Jackson County\Dillsboro GW\Reports\2015\Fall\5002Oct2015Semiannual Water Quality Report160210.Docx 5.0 Future Activities Altamont will continue to monitor the water quality on a semiannual basis at the Jackson County Closed Municipal Solid Waste landfill. During the fall of each year domestic well owners will be contacted and groundwater samples will be collected from domestic wells if permitted to do so by the well owner and possible to do so based upon well pump operability. Domestic well samples will be analyzed for VOCs only. Samples will be collected from monitoring wells, surface water monitoring points, and the leachate flow equalization tank during the spring and fall of each year. In addition to the natural attenuation parameters that were added as part of the approved corrective action, the analytical suites associated with the current and future sampling events are as follows: Sampling Event Analytical Suite (not inclusive of natural attenuation parameters) Spring 2016 Appendix I VOCs Appendix I metals Fall 2016 Appendix II VOCs Appendix II SVOCs Appendix II metals Appendix II herbicides Appendix II Polychlorinated Biphenyls Cyanide and sulfide The leachate sample analysis, along with available leachate removal volume measurements between the fall 2015 and spring 2016 sampling events, will be used to estimate the mass of VOC extracted by the active portion of the approved corrective action remedy. The monitored natural attenuation results will be used in a comprehensive Corrective Action Evaluation Report to be submitted in the fall of 2016, which is five years after the CAP was approved by the SWS. The next sampling event is scheduled for April 2016. Fall 2015 Semiannual Water Quality Monitoring Report February 10, 2016 Jackson County Closed Municipal Solid Waste Landfill Page 13 P:\Jackson County\Dillsboro GW\Reports\2015\Fall\5002Oct2015Semiannual Water Quality Report160210.Docx 6.0 References Altamont. June 30, 2011. Corrective Action Plan. DENR.. 2006. Memorandum to SW Director/County Manager/Consultant/Laboratory, Re: New Guidelines for Electronic Submittal of Environmental Monitoring Data, dated October 27, 2006. DENR., February 23, 2007. Addendum to October 27, 2006, NC SWS Memorandum Regarding New Guidelines for Electronic Submittal of Environmental Data. DENR.. Rev 4-08. Solid Waste Section Guidelines for Groundwater, Soil, and Surface Water Sampling. EPA. 1996. Low-Flow (Minimal Drawdown) Ground-Water Sampling Procedures, OSWER, EPA/540/S- 95/504. FIGURES   0 1,000 2,000Feet  1 JACKSON COUNTY CLOSED MUNICIPAL SOLID WASTE LANDFILLPERMIT #50-02JACKSON COUNTY, NORTH CAROLINA ¦ Legend SiteData Source:USGS Topographic Maps - Greens Creek and Whittier 7.5 Minute Quadrangles   !U!U !U !U !U !U !U #7 #7 !U !U !U           HAYWO O D R D JOE WILKEY RD S U S 4 4 1 T U N N E L M O U N T A I N R D WES T E R N L N MOO D Y R D HARM O N Y H L WBI D R DILLS HILLS RD WH I T E F A L C O N D R FUGITIVE R U N C O W E E T U N N E L R D RED H A W K B L F S U S 4 4 1 Wilkey Wilkey Connor Wilkey ¦             2   !U  !U  #7  !U      !U !U !U !U !U !U !U         Wilkey Wilkey Connor Wilkey GEN E R A L I Z E D G R O U N D W A T E R F L O W D I R E C T I O N MW-03 MW-04 MW-05R MW-01MW-06 MW-02 MW-07 HA Y W O O D R D T U N N E L M O U N T A I N R D JO E W I L K E Y R D HARM O N Y H L WE S T E R N L N MOO D Y R D FUGITIVE R U N W H I T E F A L C O N D R DEL L W O O D D R GREEN E N E R G Y P A R K R D WBI D R 19 6 0 1 9 8 0 2 0 2 0 2 0 4 0 2 0 6 0 2 0 8 0 2 1 2 0 2 1 4 0 2160 2 1 8 0 2 2 2 0 2 2 4 0 22 6 0 22 8 0 2 3 2 0 2 3 4 0 2360 23802420 2440 2460 2480 2 2 2 0 2080 2160 2120 2180 2020 1 9 8 0 2120 2 0 6 0 2160 21 4 0 2140 2020 20 4 0 2 1 8 0 218 0           ¦ 3  !U  !U  !U        0 250125Feet  TuckasegeeRiver Figure 4 Hydrograph and 1,4-Dichlorobenzene Concentration vs. Time Monitoring Well MW-01 Jackson County Closed Municipal Solid Waste Landfill P:\Jackson County\Dillsboro GW\Analytical & Data\Water\2015\Fall\Tables\5002October2015Graphs 15 17.8 <0.33 7.6 5.6 5.3 11.0 8.5 < 0.33 9.8 10.9 10 8.0 9.5 10 12.8 11 14 2060 2062 2064 2066 2068 2070 2072 2074 2076 0 2 4 6 8 10 12 14 16 18 20 Ap r i l , 2 0 0 7 O c t , 2 0 0 7 A p r , 2 0 0 8 Oc t , 2 0 0 8 Ap r , 2 0 0 9 Oc t , 2 0 0 9 Ap r , 2 0 1 0 O c t , 2 0 1 0 A p r , 2 0 1 1 O c t , 2 0 1 1 Ap r , 2 0 1 2 Oc t , 2 0 1 2 A p r , 2 0 1 3 O c t , 2 0 1 3 A p r , 2 0 1 4 Oc t , 2 0 1 4 Ap r , 2 0 1 5 Oc t , 2 0 1 5 G r o u n d w a t e r E l e v a t i o n (f e e t ) 1 ,4 -D i c h l o r o b e n z e n e C o n c e n t r a t i o n (μ g /L ) Sampling Date 1,4-Dichlorobenzene Groundwater Elevation Notes: 1. 2L Standard = 6 μg/L 2. "J" indicates result is estimated by laboratory 3. "<" indicates result is less than method detection limit Figure 5 Hydrograph and Benzene Concentration vs. Time Monitoring Well MW-01 Jackson County Closed Municipal Solid Waste Landfill P:\Jackson County\Dillsboro GW\Analytical & Data\Water\2015\Fall\Tables\5002October2015Graphs 6.2 6.8 5.9 5.5 5.8 5.0 5.2 3.5 2.7 2.1 2.8 1.7 1.7 3.4 3.0 2.4 1.5 1.5 2060 2062 2064 2066 2068 2070 2072 2074 2076 0 2 4 6 8 10 12 14 16 18 20 Ap r i l , 2 0 0 7 O c t , 2 0 0 7 A p r , 2 0 0 8 Oc t , 2 0 0 8 Ap r , 2 0 0 9 Oc t , 2 0 0 9 Ap r , 2 0 1 0 O c t , 2 0 1 0 A p r , 2 0 1 1 O c t , 2 0 1 1 Ap r , 2 0 1 2 Oc t , 2 0 1 2 A p r , 2 0 1 3 O c t , 2 0 1 3 A p r , 2 0 1 4 Oc t , 2 0 1 4 Ap r , 2 0 1 5 Oc t , 2 0 1 5 G r o u n d w a t e r E l e v a t i o n (f e e t ) B e n z e n e C o n c e n t r a t i o n (μ g /L ) Sampling Date Benzene Groundwater Elevation Notes: 1. 2L Standard = 1 μg/L 2. "J" indicates result is estimated by laboratory 3. "<" indicates result is less than method detection limit Figure 6 Hydrograph and Tetrachloroethene Concentration vs. Time Monitoring Well MW-01 Jackson County Closed Municipal Solid Waste Landfill P:\Jackson County\Dillsboro GW\Analytical & Data\Water\2015\Fall\Tables\5002October2015Graphs 1.6 1.6 <0.46 0.7 J 0.49 J 0.48 J 0.69 J <0.46 <0.46 0.78 J 0.78 J 0.68 J 0.77 J 0.60 J 0.67 J 0.67 0.44 J 0.85 J 2060 2062 2064 2066 2068 2070 2072 2074 2076 0 2 4 6 8 10 12 14 16 18 20 Ap r i l , 2 0 0 7 O c t , 2 0 0 7 A p r , 2 0 0 8 Oc t , 2 0 0 8 Ap r , 2 0 0 9 Oc t , 2 0 0 9 Ap r , 2 0 1 0 O c t , 2 0 1 0 A p r , 2 0 1 1 O c t , 2 0 1 1 Ap r , 2 0 1 2 Oc t , 2 0 1 2 A p r , 2 0 1 3 O c t , 2 0 1 3 A p r , 2 0 1 4 Oc t , 2 0 1 4 Ap r , 2 0 1 5 Oc t , 2 0 1 5 G r o u n d w a t e r E l e v a t i o n (f e e t ) T e t r a c h l o r o e t h e n e C o n c e n t r a t i o n (μ g /L ) Sampling Date Tetrachloroethene Groundwater Elevation Notes: 1. 2L Standard = 0.7 μg/L 2. "J" indicates result is estimated by laboratory3. "<" indicates result is less than method detection limit Figure 7 Hydrograph and 1,4-Dichlorobenzene Concentration vs. Time Monitoring Well MW-03 Jackson County Closed Municipal Solid Waste Landfill P:\Jackson County\Dillsboro GW\Analytical & Data\Water\2015\Fall\Tables\5002October2015Graphs 11 18.4 < 0.33 12.6 4.9 8.3 3.5 9.5 < 0.33 11.2 2.5 8.6 1.8 6.4 4.2 10.2 2 9.2 1984 1986 1988 1990 1992 1994 1996 1998 2000 2002 2004 0 2 4 6 8 10 12 14 16 18 20 Ap r , 2 0 0 7 Oc t , 2 0 0 7 Ap r , 2 0 0 8 Oc t , 2 0 0 8 Ap r , 2 0 0 9 Oc t , 2 0 0 9 Ap r , 2 0 1 0 Oc t , 2 0 1 0 Ap r , 2 0 1 1 Oc t , 2 0 1 1 Ap r , 2 0 1 2 Oc t , 2 0 1 2 A p r , 2 0 1 3 O c t , 2 0 1 3 A p r , 2 0 1 4 Oc t , 2 0 1 4 Ap r , 2 0 1 5 Oc t , 2 0 1 5 G r o u n d w a t e r E l e v a t i o n (f e e t -r e l a t i v e ) 1 ,4 -D i c h l o r o b e n z e n e C o n c e n t r a t i o n (μ g /L ) Sampling Date 1,4-Dichlorobenzene Groundwater Elevation Notes: 1. 2L Standard = 6 μg/L 2. "J" indicates result is estimated by laboratory 3. "<" indicates result is less than method detection limit Figure 8 Hydrograph and Benzene Concentration vs. Time Monitoring Well MW-04 Jackson County Closed Municipal Solid Waste Landfill P:\Jackson County\Dillsboro GW\Analytical & Data\Water\2015\Fall\Tables\5002October2015Graphs 1.3 1.8 1.2 1.5 1.2 1.1 0.55 J 1.1 0.59 J 0.89 J 0.64 J 0.93 J 0.43 J 0.49 J 0.44 J 0.67 J 0.60 J 1.0 1947 1948 1949 1950 1951 1952 1953 1954 1955 1956 1957 0 1 2 3 4 5 6 7 8 9 10 Ap r , 2 0 0 7 Oc t , 2 0 0 7 Ap r , 2 0 0 8 Oc t , 2 0 0 8 Ap r , 2 0 0 9 Oc t , 2 0 0 9 Ap r , 2 0 1 0 Oc t , 2 0 1 0 Ap r , 2 0 1 1 Oc t , 2 0 1 1 Ap r , 2 0 1 2 Oc t , 2 0 1 2 A p r , 2 0 1 3 O c t , 2 0 1 3 A p r , 2 0 1 4 Oc t , 2 0 1 4 Ap r , 2 0 1 5 Oc t , 2 0 1 5 G r o u n d w a t e r E l e v a t i o n (f e e t -r e l a t i v e ) B e n z e n e C o n c e n t r a t i o n (µg /L ) Sampling Date Benzene Groundwater Elevation Notes: 1. 2L Standard = 1 μg/L 2. "J" indicates result is estimated by laboratory 3. "<" indicates result is less than method detection limit Figure 9 Hydrograph and Vinyl Chloride Concentration vs. Time Monitoring Well MW-04 Jackson County Closed Municipal Solid Waste Landfill P:\Jackson County\Dillsboro GW\Analytical & Data\Water\2015\Fall\Tables\5002October2015Graphs < 0.58 0.97 J 0.76 J 0.97 J 0.78 J 0.90 J <0.62 < 0.62 < 0.62 0.89 J 0.69 J 1.1 0.52 J < 0.62 <0.62 <0.62 0.5 J 0.74 J 1947 1948 1949 1950 1951 1952 1953 1954 1955 1956 1957 0 2 4 6 8 10 Ap r , 2 0 0 7 Oc t , 2 0 0 7 Ap r , 2 0 0 8 Oc t , 2 0 0 8 Ap r , 2 0 0 9 Oc t , 2 0 0 9 Ap r , 2 0 1 0 Oc t , 2 0 1 0 Ap r , 2 0 1 1 Oc t , 2 0 1 1 Ap r , 2 0 1 2 Oc t , 2 0 1 2 A p r , 2 0 1 3 O c t , 2 0 1 3 A p r , 2 0 1 4 Oc t , 2 0 1 4 Ap r , 2 0 1 5 Oc t , 2 0 1 5 G r o u n d w a t e r E l e v a t i o n (f e e t ) V i n y l C h l o r i d e C o n c e n t r a t i o n (μ g /L ) Sampling Date Vinyl Chloride Groundwater Elevation Notes: 1. 2L Standard = 0.03 μg/L 2. "J" indicates result is estimated by laboratory 3. "<" indicates result is less than method detection limit Figure 10 Hydrograph and 1,4-Dichlorobenzene Concentration vs. Time Monitoring Well MW-05R Jackson County Closed Municipal Solid Waste Landfill P:\Jackson County\Dillsboro GW\Analytical & Data\Water\2015\Fall\Tables\5002October2015Graphs 17 18.8 BQL 16.2 15.9 13.1 12.1 13.9 0.33 U Not Sampled 2.5 1.3 1.5 7.3 6.9 4.3 5.6 6.5 1970 1972 1974 1976 1978 1980 1982 1984 1986 1988 1990 0 2 4 6 8 10 12 14 16 18 20 Ap r , 2 0 0 7 Oc t , 2 0 0 7 Ap r , 2 0 0 8 Oc t , 2 0 0 8 Ap r , 2 0 0 9 Oc t , 2 0 0 9 Ap r , 2 0 1 0 Oc t , 2 0 1 0 Ap r , 2 0 1 1 Oc t , 2 0 1 1 Ap r , 2 0 1 2 Oc t , 2 0 1 2 A p r , 2 0 1 3 O c t , 2 0 1 3 A p r , 2 0 1 4 Oc t , 2 0 1 4 Ap r , 2 0 1 5 Oc t , 2 0 1 5 G r o u n d w a t e r E l e v a t i o n (f e e t ) 1 ,4 -D i c h l o r o b e n z e n e C o n c e n t r a t i o n (μ g /L ) Sampling Date 1,4-Dichlorobenzene Groundwater Elevation Notes: Constituent concentration after January 2012 was found in MW-05R. Constituent concentration before January 2012 was found in MW-05. Groundwater elevation in October 2011 was interpolated. 2L Standard = 6 μg/L "J" indicates result is estimated by laboratory "<" indicates result is less than method detection limit Figure 11 Hydrograph and Benzene Concentration vs. Time Monitoring Well MW-05R Jackson County Closed Municipal Solid Waste Landfill P:\Jackson County\Dillsboro GW\Analytical & Data\Water\2015\Fall\Tables\5002October2015Graphs 1.9 1.6 0.56 J 1.2 1.0 1.2 2.0 1.8 1.5 Not Sampled 1.3 1.3 1.5 2.0 2.2 1.5 1.4 1.9 1970 1972 1974 1976 1978 1980 1982 1984 1986 1988 1990 0 2 4 6 8 10 Ap r , 2 0 0 7 Oc t , 2 0 0 7 Ap r , 2 0 0 8 Oc t , 2 0 0 8 Ap r , 2 0 0 9 Oc t , 2 0 0 9 Ap r , 2 0 1 0 Oc t , 2 0 1 0 Ap r , 2 0 1 1 Oc t , 2 0 1 1 Ap r , 2 0 1 2 Oc t , 2 0 1 2 A p r , 2 0 1 3 O c t , 2 0 1 3 A p r , 2 0 1 4 Oc t , 2 0 1 4 Ap r , 2 0 1 5 Oc t , 2 0 1 5 G r o u n d w a t e r E l e v a t i o n (f e e t ) B e n z e n e C o n c e n t r a t i o n (μ g /L ) Sampling Date Benzene Groundwater Elevation Notes:Constituent concentration after January 2012 was found in MW-05R. Constituent concentration before January 2012 was found in MW-05. Groundwater elevation in October 2011 was interpolated.2L Standard = 1 μg/L "J" indicates result is estimated by laboratory "<" indicates result is less than method detection limit Figure 12 Hydrograph and Vinyl Chloride Concentration vs. Time Monitoring Well MW-05R Jackson County Closed Municipal Solid Waste Landfill P:\Jackson County\Dillsboro GW\Analytical & Data\Water\2015\Fall\Tables\5002October2015Graphs < 0.58 1.4 0.93 J 0.78 J 0.99 J 0.93 J 1.5 1.6 1.1 Not Sampled 0.82 J 0.62 J < 0.32 1.0 2.5 2.9 1.8 1.8 1970 1972 1974 1976 1978 1980 1982 1984 1986 1988 1990 0 2 4 6 8 10 Ap r , 2 0 0 7 Oc t , 2 0 0 7 Ap r , 2 0 0 8 Oc t , 2 0 0 8 Ap r , 2 0 0 9 Oc t , 2 0 0 9 Ap r , 2 0 1 0 Oc t , 2 0 1 0 Ap r , 2 0 1 1 Oc t , 2 0 1 1 Ap r , 2 0 1 2 Oc t , 2 0 1 2 A p r , 2 0 1 3 O c t , 2 0 1 3 A p r , 2 0 1 4 Oc t , 2 0 1 4 Ap r , 2 0 1 5 Oc t , 2 0 1 5 G r o u n d w a t e r E l e v a t i o n (f e e t ) V i n y l C h l o r i d e C o n c e n t r a t i o n (μ g /L ) Sampling Date Vinyl Chloride Groundwater Elevation Notes: Constituent concentration after January 2012 was found in MW-05R. Constituent concentration before January 2012 was found in MW-05.Groundwater elevation in October 2011 was interpolated.2L Standard = 0.03 μg/L "J" indicates result is estimated by laboratory "<" indicates result is less than method detection limit Figure 13 Hydrograph and 1,1-Dichloroethane Concentration vs. Time Monitoring Well MW-06 Jackson County Closed Municipal Solid Waste Landfill P:\Jackson County\Dillsboro GW\Analytical & Data\Water\2015\Fall\Tables\5002October2015Graphs 9.7 11.3 11.8 12.4 13 2.7 J 1.1 J 5.4 0.85 J 3.8 J 6.7 5.3 6.1 5.4 5.0 4.4 6.2 6.4 2030 2035 2040 2045 2050 2055 2060 2065 0 2 4 6 8 10 12 14 16 18 20 Ap r , 2 0 0 7 Oc t , 2 0 0 7 Ap r , 2 0 0 8 Oc t , 2 0 0 8 Ap r , 2 0 0 9 Oc t , 2 0 0 9 Ap r , 2 0 1 0 Oc t , 2 0 1 0 Ap r , 2 0 1 1 Oc t , 2 0 1 1 Ap r , 2 0 1 2 Oc t , 2 0 1 2 A p r , 2 0 1 3 O c t , 2 0 1 3 A p r , 2 0 1 4 Oc t , 2 0 1 4 Ap r , 2 0 1 5 Oc t , 2 0 1 5 G r o u n d w a t e r E l e v a t i o n (f e e t ) 1 ,1 -D i c h l o r o e t h a n e C o n c e n t r a t i o n (μ g /L ) Sampling Date 1,1-Dichloroethane Groundwater Elevation Notes: 1. 2L Standard = 6 μg/L 2. "J" indicates result is estimated by laboratory 3. "<" indicates result is less than method detection limit Figure 14 Hydrograph and 1,4-Dichlorobenzene Concentration vs. Time Monitoring Well MW-06 Jackson County Closed Municipal Solid Waste Landfill P:\Jackson County\Dillsboro GW\Analytical & Data\Water\2015\Fall\Tables\5002October2015Graphs 13 11.2 BQL 2.1 3.2 1.3 3.9 7.9 4.6 6.0 5.7 7.0 5.8 11.1 8.2 9.8 9.3 8.1 2035 2040 2045 2050 2055 2060 2065 0 2 4 6 8 10 12 14 16 18 20 Ap r , 2 0 0 7 Oc t , 2 0 0 7 Ap r , 2 0 0 8 Oc t , 2 0 0 8 Ap r , 2 0 0 9 Oc t , 2 0 0 9 Ap r , 2 0 1 0 Oc t , 2 0 1 0 Ap r , 2 0 1 1 Oc t , 2 0 1 1 Ap r , 2 0 1 2 Oc t , 2 0 1 2 A p r , 2 0 1 3 O c t , 2 0 1 3 A p r , 2 0 1 4 Oc t , 2 0 1 4 Ap r , 2 0 1 5 Oc t , 2 0 1 5 G r o u n d w a t e r E l e v a t i o n (f e e t ) 1 ,4 -D i c h l o r o b e n z e n e C o n c e n t r a t i o n (μ g /L ) Sampling Date 1,4-Dichlorobenzene Groundwater Elevation Notes: 1. 2L Standard = 6 μg/L 2. "J" indicates result is estimated by laboratory3. "<" indicates result is less than method detection limit Figure 15 Hydrograph and Benzene Concentration vs. Time Monitoring Well MW-06 Jackson County Closed Municipal Solid Waste Landfill P:\Jackson County\Dillsboro GW\Analytical & Data\Water\2015\Fall\Tables\5002October2015Graphs 4.7 3.3 1.9 1.8 1.4 0.56 J 1.7 4.3 1.8 2.3 2.5 2.8 1.9 2.9 3.0 2.7 2.4 1.5 2030 2035 2040 2045 2050 2055 2060 2065 0 2 4 6 8 10 Ap r , 2 0 0 7 Oc t , 2 0 0 7 Ap r , 2 0 0 8 Oc t , 2 0 0 8 Ap r , 2 0 0 9 Oc t , 2 0 0 9 Ap r , 2 0 1 0 Oc t , 2 0 1 0 Ap r , 2 0 1 1 Oc t , 2 0 1 1 Ap r , 2 0 1 2 Oc t , 2 0 1 2 A p r , 2 0 1 3 O c t , 2 0 1 3 A p r , 2 0 1 4 Oc t , 2 0 1 4 Ap r , 2 0 1 5 Oc t , 2 0 1 5 G r o u n d w a t e r E l e v a t i o n (f e e t ) B e n z e n e C o n c e n t r a t i o n (μ g /L ) Sampling Date Benzene Groundwater Elevation Notes: 1. 2L Standard = 1 μg/L 2. "J" indicates result is estimated by laboratory3. "<" indicates result is less than method detection limit Figure 16 Hydrograph and 1,4-Dichlorobenzene Concentration vs. Time Monitoring Well MW-07 Jackson County Closed Municipal Solid Waste Landfill P:\Jackson County\Dillsboro GW\Analytical & Data\Water\2015\Fall\Tables\5002October2015Graphs 3.7 5.0 5.7 4.9 6.4 6.0 5.1 5.7 5.3 6.6 1940 1942 1944 1946 1948 1950 0.0 2.0 4.0 6.0 8.0 10.0 Ap r , 2 0 1 1 Oc t , 2 0 1 1 Ap r , 2 0 1 2 Oc t , 2 0 1 2 A p r , 2 0 1 3 O c t , 2 0 1 3 A p r , 2 0 1 4 Oc t , 2 0 1 4 Ap r , 2 0 1 5 Oc t , 2 0 1 5 G r o u n d w a t e r E l e v a t i o n (f e e t ) 1 ,4 -D i c h l o r o b e n z e n e C o n c e n t r a t i o n (μ g /L ) Sampling Date 1,4-Dichlorobenzene Groundwater Elevation Notes: 1. 2L Standard = 6 μg/L 2. "J" indicates result is estimated by laboratory 3. "<" indicates result is less than method detection limit Figure 17 Hydrograph and Benzene Concentration vs. Time Monitoring Well MW-07 Jackson County Closed Municipal Solid Waste Landfill P:\Jackson County\Dillsboro GW\Analytical & Data\Water\2015\Fall\Tables\5002October2015Graphs 1.1 1.1 1.4 1.4 1.7 1.4 1.3 1.1 1.2 1.7 1940 1942 1944 1946 1948 1950 0 2 4 6 8 10 Ap r , 2 0 1 1 Oc t , 2 0 1 1 Ap r , 2 0 1 2 Oc t , 2 0 1 2 A p r , 2 0 1 3 O c t , 2 0 1 3 A p r , 2 0 1 4 Oc t , 2 0 1 4 Ap r , 2 0 1 5 Oc t , 2 0 1 5 G r o u n d w a t e r E l e v a t i o n (f e e t ) B e n z e n e C o n c e n t r a t i o n (μ g /L ) Sampling Date Benzene Groundwater Elevation Notes: 1. 2L Standard = 1 μg/L 2. "J" indicates result is estimated by laboratory 3. "<" indicates result is less than method detection limit Figure 18 Hydrograph and Vinyl Chloride Concentration vs. Time Monitoring Well MW-07 Jackson County Closed Municipal Solid Waste Landfill P:\Jackson County\Dillsboro GW\Analytical & Data\Water\2015\Fall\Tables\5002October2015Graphs <0.62 0.65 J 0.82 J 0.68 J 0.89 J <0.62 <0.62 <0.62 0.30 J 0.55 J 1940 1942 1944 1946 1948 1950 0 2 4 6 8 10 Ap r , 2 0 1 1 Oc t , 2 0 1 1 Ap r , 2 0 1 2 Oc t , 2 0 1 2 A p r , 2 0 1 3 O c t , 2 0 1 3 A p r , 2 0 1 4 Oc t , 2 0 1 4 Ap r , 2 0 1 5 Oc t , 2 0 1 5 G r o u n d w a t e r E l e v a t i o n (f e e t ) V i n y l C h l o r i d e C o n c e n t r a t i o n (μ g /L ) Sampling Date Vinyl Chloride Groundwater Elevation Notes: 1. 2L Standard = 0.03 μg/L 2. "J" indicates result is estimated by laboratory 3. "<" indicates result is less than method detection limit TABLES Table 1 Summary of Laboratory Analyses Performed on Samples Jackson County Closed Municipal Solid Waste Landfill, Jackson County, North Carolina GROUNDWATER SAMPLES SURFACE WATER, LEACHATE, AND QUALITY CONTROL SAMPLES Metals VOCs Mercury Herbicides Metals VOCs VOCs Mercury Herbicides Sulfide Cyanide, Total Sample Name Date Collected Sample Name Date Collected MW-01 10/13/2015 X X X X SW-01 10/14/2015 X X X X X X MW-02 10/14/2015 X X X X SW-02 10/14/2015 X X X X X X MW-03 10/13/2015 X X X X LT-01 10/13/2015 X MW-04 10/14/2015 X X X X DW-01 10/13/2015 X MW-05R 10/14/2015 X X X X DW-02 10/13/2015 X MW-06 10/13/2015 X X X X TRIPBLANK (DW)10/13/2015 X MW-07 10/14/2015 X X X X TRIPBLANK (1)10/13/2015 X TRIPBLANK (2)10/14/2015 X GROUNDWATER SAMPLES Alkalinity BOD COD Chloride Cyanide, Total Volatile Fatty Acids Iron Ferrous Nitrate as N Sulfate Sulfide TOC Ethane, Ethene, Methane Hydrogen Carbon Dioxide Sample Name Date Collected MW-01 10/13/2015 X X X X X X X X X X X X X MW-02 10/14/2015 X X X X X X X X X X X X X MW-03 10/13/2015 X X X X X X X X X X X X X X MW-04 10/14/2015 X X X X X X X X X X X X X X MW-05R 10/14/2015 X X X X X X X X X X X X X MW-06 10/13/2015 X X X X X X X X X X X X X X MW-07 10/14/2015 X X X X X X X X X X X X X X Notes: 1. VOCs = volatile organic compounds. 2. TOC = total organic carbon. 3. BOD = biochemical oxygen demand. 4. COD = chemical oxygen demand. 5. During the fall 2015 monitoring event, Appendix II constituents were analyzed per Title 40 Code of Federal Regulations (CFR) Part 258. 6. Blank cells indicate that the analysis was not performed on that sample. EPA 8151A Natural Attenuation Parameters EPA 524.2 SM-4500- S F SM 4500- CN-EEPA 8260B EPA 7470A AM20GAXSM 4500-CN-ESM 5210BSM 2320B EPA 9060AEPA 9056ASM 5220D EPA 9056A SM 4500-S FSM 3500-Fe DAM23G AM20GAX Analysis EPA 9056A EPA 6020A Analysis EPA 8260B Analysis EPA 8151AEPA 6020A EPA 7470A P:\Jackson County\Dillsboro GW\Analytical & Data\Water\2015\Fall\Tables\5002October2015Tables Page 1 of 1 Table 2 Summary of Detected Parameters Jackson County Closed Municipal Solid Waste Landfill, Jackson County, North Carolina Metals 402 EPA 6020A, 7470A Parameter An t i m o n y Ar s e n i c Ba r i u m Be r y l l i u m Ca d m i u m Ch r o m i u m Co b a l t Co p p e r Le a d Me r c u r y Ni c k e l Se l e n i u m Si l v e r Th a l l i u m Ti n Va n a d i u m Zi n c CAS Number 7440-36-0 7440-38-2 7440-39-3 7440-41-7 7440-43-9 7440-47-3 7440-48-4 7440-50-8 7439-92-1 7439-97-6 7440-02-0 7782-49-2 7440-22-4 7440-28-0 7440-31-5 7440-62-2 7440-66-6 SWS ID 13 14 15 23 34 51 53 54 131 132 152 183 184 194 195 209 213 Units µg/L µg/L µg/L µg/L µg/L µg/L µg/L µg/L µg/L µg/L µg/L µg/L µg/L µg/L µg/L µg/L µg/L Sample Name Collect Date Result Result Result Result Result Result Result Result Result Result Result Result Result Result Result Result Result MW-01 10/13/2015 0.069 U 0.29 U 100 0.061 J 15 1.7 J 150 29 2.2 J 0.030 J 18 J 0.35 U 0.095 J 2.0 J 0.37 U 2.5 U 210 MW-02 10/14/2015 0.12 J 3.8 J 280 1.5 0.23 J 44 63 56 15 0.079 J 29 J 1.6 J 0.052 J 0.84 J 1.6 J 61 110 MW-03 10/13/2015 0.069 U 0.29 U 140 0.047 U 0.44 J 0.51 U 49 0.54 J 0.15 J 0.042 J 6.6 J 0.35 U 0.051 J 0.13 J 1.6 J 2.5 U 4.8 J MW-04 10/14/2015 0.069 U 0.59 J 100 0.048 J 0.36 J 0.51 U 3.1 J 0.44 U 0.036 J 0.061 J 1.7 J 3.6 J 0.029 J 0.054 J 0.52 J 2.5 U 2.4 J MW-05R 10/14/2015 0.086 J 1.1 J 300 1.2 0.32 J 15 28 29 9.8 J 0.018 J 16 J 4.5 J 0.037 J 0.57 J 1.1 J 24 J 61 MW-06 10/13/2015 0.069 U 0.29 U 74 J 0.047 U 0.34 J 0.54 J 100 1.2 J 0.24 J 0.011 U 40 J 0.35 U 0.024 J 0.77 J 4.9 J 2.5 U 14 MW-07 10/14/2015 0.074 J 0.57 J 380 0.047 U 0.15 J 0.51 U 0.62 J 0.44 U 0.12 J 0.019 J 5.7 J 3.2 J 0.015 J 0.21 J 0.37 U 2.5 U 8.9 J LT-01 10/13/2015 NA NA NA NA NA NA NA NA NA NA NA NA NA NA NA NA NA SW-01 10/14/2015 0.069 U 0.29 U 14 J 0.047 U 0.12 J 0.51 J 0.17 J 1.0 J 0.23 J 0.016 J 1.4 J 0.35 U 0.011 U 0.097 J 0.37 U 2.5 U 2.7 J SW-02 10/14/2015 0.069 U 0.29 U 14 J 0.047 U 0.051 J 0.51 U 0.20 J 0.66 J 0.31 J 0.012 J 0.75 J 0.35 U 0.011 U 0.067 J 0.37 U 2.5 U 1.9 J DW-01 10/13/2015 NA NA NA NA NA NA NA NA NA NA NA NA NA NA NA NA NA DW-02 10/13/2015 NA NA NA NA NA NA NA NA NA NA NA NA NA NA NA NA NA TRIPBLANK (DW)10/13/2015 NA NA NA NA NA NA NA NA NA NA NA NA NA NA NA NA NA TRIPBLANK (1)10/13/2015 NA NA NA NA NA NA NA NA NA NA NA NA NA NA NA NA NA TRIPBLANK (2)10/14/2015 NA NA NA NA NA NA NA NA NA NA NA NA NA NA NA NA NA MDL 0.069 0.29 0.041 0.047 0.019 0.51 0.013 0.44 0.020 0.011 0.053 0.35 0.011 0.0093 0.37 2.5 0.98 MRL 1.0 1.0 5.0 1.0 1.0 1.0 1.0 5.0 1.0 0.20 2.0 1.0 1.0 1.0 5.0 5.0 10 SWSL 6 10 100 1 1 10 10 10 10 0.2 50 10 10 5.5 100 25 10 2L NE 700 700 NE 2 10 NE 1,000 15 1 100 20 20 NE NE NE 1,000 IMAC 1 NE NE 4 NE NE 1 NE NE NE NE NE NE 0.2 2,000 0.3 NE GWPS 1 NE NE 4 NE NE 1 NE NE NE NE NE NE 0.28 2,000 0.3 NE 2B NE 10 200,000 6.5 2 50 4 7 25 0.012 88 5 0.06 0.47 800 NE 50 Notes: 1.Only results, MDLs, MRLs, certification numbers, and methods for detected constituents are listed on this table. Please refer to Prism Report of Laboratory Analysis for further details. 2."Lab Method" is the analytical method used to analyze the constituents. 3."CAS NUMBER" is a unique number assigned by the Chemical Abstracts Service (CAS) to all identified parameters. 4."SWS ID" is the Solid Waste Section Identification Number. 5."Units" are micrograms per liter (µg/L) and milligrams per liter (mg/L) for analytical results, Standard Units (SU) for pH and nephelometric turbidity units (NTU) for turbidity. 6."Collect Date" is the date on which the sample was collected in the field. 7."Result" is analytical data reported by the laboratory or field data collected by Altamont. 8."MDL" is the method detection limit, which is the minimum concentration of a substance that can be measured and reported with 99% confidence that the analyte concentration is greater than zero. 9."MRL" is the method reporting limit, which is the minimum concentration of a target analyte that can be accurately determined by the referenced method. MRL equals PQL values in the Pace Analytical Reports. 10."SWSL" is the Solid Waste Section Limit. This limit (identified by DENR) is the lowest amount of analyte in a sample that can be quantitatively determined with suitable precision and accuracy. 11."U" is a laboratory data qualifier used for parameters not detected at concentrations above MDL. 12."J" is a laboratory data qualifier used for parameters detected at estimated concentrations above MDL but below MRL and SWSL. An italicized "J" qualifier is assigned by Altamont to reflect a detected concentration that is greater than MRL and MDL but less than the SWSL. 13."2L" and "IMAC" (Interim Maximum Allowable Concentration) are groundwater standards from "North Carolina Administrative Code, Title 15A: Department of Environment and Natural Resources, Subchapter 2L - Groundwater Classifications and Standards," DENR (Amended April 1, 2013). 14."GWPS" is the Groundwater Protection Standard pursuant to "15A NCAC 13B .1634," DENR. Current standards were obtained from http://portal.ncdenr.org/web/sw/envmonitoringlist (last updated June 13, 2011). 15."2B" indicates surface water standard per "North Carolina Administrative Code, Title 15A: Department of Environment and Natural Resources, Subchapter 2B - Surface Water and Wetland Standards," (last amended on May 1, 2007). Where no 2B standard exists, the National Criteria per Environmental Protection Agency (EPA) from standards Table (Current as of May 15, 2013) for the most stringent of fresh water and human health was used. 16.Bold numbers indicate any detection. Shaded cell indicates result in exceedance of the 2L or IMAC standard or greater than or equal to the GWPS (if no 2L or IMAC exist), and 2B standard if applicable. 17."NA" means Not Analyzed. "NE" indicates Not Established. 18.Samples DW-01 and DW-02 were analyzed by EPA Method 524.2. Method detection limits do not match those of EPA Method 8260. Lab Certification Lab Method P:\Jackson County\Dillsboro GW\Analytical & Data\Water\2015\Fall\Tables\5002October2015Tables Page 1 of 4 Table 2 Summary of Detected Parameters Jackson County Closed Municipal Solid Waste Landfill, Jackson County, North Carolina Parameter CAS Number SWS ID Units Sample Name Collect Date MW-01 10/13/2015 MW-02 10/14/2015 MW-03 10/13/2015 MW-04 10/14/2015 MW-05R 10/14/2015 MW-06 10/13/2015 MW-07 10/14/2015 LT-01 10/13/2015 SW-01 10/14/2015 SW-02 10/14/2015 DW-01 10/13/2015 DW-02 10/13/2015 TRIPBLANK (DW)10/13/2015 TRIPBLANK (1)10/13/2015 TRIPBLANK (2)10/14/2015 MDL MRL SWSL 2L IMAC GWPS 2B 1. 2. 3. 4. 5. 6. 7. 8. 9. 10. 11. 12. 13. 14. 15. 16. 17. 18. Lab Certification Lab Method Volatile Organic Compounds (VOCs) 402 EPA 8260B, 524.2 1, 1 - D i c h l o r o e t h a n e 1, 4 - D i c h l o r o b e n z e n e 2- B u t a n o n e Be n z e n e Ch l o r o b e n z e n e ci s - 1 , 2 - D i c h l o r o e t h e n e Et h y l b e n z e n e m & p X y l e n e Na p h t h a l e n e o- X y l e n e Te t r a c h l o r o e t h e n e Te t r a h y d r o f u r a n To l u e n e Tr i c h l o r o e t h e n e Vi n y l C h l o r i d e Xy l e n e ( T o t a l ) 75-34-3 106-46-7 78-93-3 71-43-2 108-90-7 156-59-2 100-41-4 179601-23-1 91-20-3 95-47-6 127-18-4 109-99-9 108-88-3 79-01-6 75-01-4 1330-20-7 75 71 141 16 39 78 110 359 148 408 192 458 196 201 211 346 µg/L µg/L µg/L µg/L µg/L µg/L µg/L µg/L µg/L µg/L µg/L µg/L µg/L µg/L µg/L µg/L Result Result Result Result Result Result Result Result Result Result Result Result Result Result Result Result 5.6 14 0.24 U 1.5 3.6 9.0 0.061 U 0.12 U 1.2 J 0.044 U 0.85 J 0.16 U 0.044 U 0.96 J 0.097 U 0.15 U 0.79 J 0.050 U 0.24 U 0.048 U 0.062 U 1.0 J 0.061 U 0.12 U 0.19 U 0.044 U 0.098 U 0.16 U 0.044 U 0.078 U 0.097 U 0.15 U 1.3 J 9.2 0.24 U 0.79 J 12 2.8 0.061 U 0.12 U 0.19 U 0.044 U 0.098 U 0.16 U 0.044 U 0.078 U 0.097 U 0.15 U 0.083 U 5.4 0.24 U 1.0 4.4 5.4 0.061 U 0.12 U 0.19 U 0.044 U 0.098 U 0.16 U 0.044 U 0.078 U 0.74 J 0.15 U 0.083 U 6.5 0.24 U 1.9 7.4 2.7 0.061 U 0.52 J 0.19 U 0.044 U 0.098 U 0.16 U 0.044 U 0.078 U 1.8 0.52 J 6.4 8.1 0.24 U 1.5 1.9 J 7.7 0.061 U 0.83 J 0.19 U 0.044 U 0.098 U 0.16 U 0.044 U 0.73 J 0.097 U 0.83 J 0.083 U 6.6 0.24 U 1.7 7.2 6.2 0.061 U 0.12 U 0.19 U 0.044 U 0.098 U 0.16 U 0.044 U 0.078 U 0.55 J 0.15 U 0.083 U 6.0 9.6 J 2.1 4.0 0.056 U 7.1 1.4 21 1.7 0.098 U 62 0.58 J 0.078 U 0.097 U 3.1 J 0.083 U 0.050 U 0.24 U 0.048 U 0.062 U 0.056 U 0.061 U 0.12 U 0.19 U 0.044 U 0.098 U 0.16 U 0.044 U 0.078 U 0.097 U 0.15 U 0.083 U 0.050 U 0.24 U 0.048 U 0.062 U 0.056 U 0.061 U 0.12 U 0.19 U 0.044 U 0.098 U 0.16 U 0.044 U 0.078 U 0.097 U 0.15 U 0.077 U 0.088 U NA 0.078 U 0.076 U 0.12 U 0.024 U 0.16 U 0.059 U 0.098 U 0.13 U NA 0.078 U 0.053 U 0.083 U NA 0.077 U 0.088 U NA 0.078 U 0.076 U 0.12 U 0.024 U 0.16 U 0.059 U 0.098 U 0.13 U NA 0.078 U 0.053 U 0.083 U NA 0.077 U 0.088 U NA 0.078 U 0.076 U 0.12 U 0.024 U 0.16 U 0.059 U 0.098 U 0.13 U NA 0.078 U 0.053 U 0.083 U NA 0.083 U 0.050 U 0.24 U 0.048 U 0.062 U 0.056 U 0.061 U 0.12 U 0.19 U 0.044 U 0.098 U 0.16 U 0.044 U 0.078 U 0.097 U 0.15 U 0.083 U 0.050 U 0.24 U 0.048 U 0.062 U 0.056 U 0.061 U 0.12 U 0.19 U 0.044 U 0.098 U 0.16 U 0.044 U 0.078 U 0.097 U 0.15 U 0.077/0.083 0.050/0.088 0.24 0.048/0.078 0.062/0.076 0.056/0.12 0.024/0.061 0.12/0.16 0.059/0.19 0.044/0.098 0.098/0.13 0.16 0.044/0.078 0.053/0.078 0.083/0.097 0.15 0.50 0.50 5.0 0.50 0.50 0.50 0.50 1.0 0.5/1.0 0.50 0.50 10 0.50 0.50 0.50 3.0 5 1 100 1 3 2 1 NE 10 NE 1 NE 1 1 1 5 6 6 4,000 1 50 70 600 500 6 500 0.7 NE 600 3 0.03 500 NE NE NE NE NE NE NE NE NE NE NE NE NE NE NE NE NE NE NE NE NE NE NE NE NE NE NE NE NE NE NE NE 100 56 750,000 51 140 720 97 NE 12 600 3.3 NE 0.36 30.0 2.4 670 P:\Jackson County\Dillsboro GW\Analytical & Data\Water\2015\Fall\Tables\5002October2015Tables Page 2 of 4 Table 2 Summary of Detected Parameters Jackson County Closed Municipal Solid Waste Landfill, Jackson County, North Carolina Parameter CAS Number SWS ID Units Sample Name Collect Date MW-01 10/13/2015 MW-02 10/14/2015 MW-03 10/13/2015 MW-04 10/14/2015 MW-05R 10/14/2015 MW-06 10/13/2015 MW-07 10/14/2015 LT-01 10/13/2015 SW-01 10/14/2015 SW-02 10/14/2015 DW-01 10/13/2015 DW-02 10/13/2015 TRIPBLANK (DW)10/13/2015 TRIPBLANK (1)10/13/2015 TRIPBLANK (2)10/14/2015 MDL MRL SWSL 2L IMAC GWPS 2B 1. 2. 3. 4. 5. 6. 7. 8. 9. 10. 11. 12. 13. 14. 15. 16. 17. 18. Lab Certification Lab Method Natural Attenuation Parameters 402, 618 SM2320B SM 5210B SM 5220D EPA 9056A SM 3500-Fe-D SM 9056A EPA 9056A SM4500-S F EPA 9056A To t a l A l k a l i n i t y , t o p H 4. 5 BO D CO D Ch l o r i d e Ir o n , F e r r o u s Ni t r a t e a s N Su l f a t e Su l f i d e TO C Ac e t i c A c i d Fo r m i c A c i d SW337 SW316 SW317 16887-00-6 NA SW303 14808-79-8 184-96-258 7440-44-0 64-19-7 64-18-6 337 316 317 455 334 303 315 187 357 NE NE µg/L µg/L µg/L µg/L µg/L µg/L µg/L µg/L µg/L mg/L mg/L Result Result Result Result Result Result Result Result Result Result Result 100,000 6,000 27,000 J 510 J 15,000 39 J 600 J 830 U 6,700 0.1 U 0.1 U 68,000 1,200 J 100,000 22,000 39 U 98 J 11,000 J 6,600 U 1,100 J 0.15 0.1 U 83,000 5,100 U 11,000 J 39,000 39 U 3,200 J 1,300 J 830 U 2,000 J 0.1 U 0.10 110,000 370 J 18,000 J 72,000 39 U 2,200 J 70,000 J 1,000 J 2,900 J 0.1 U 0.1 U 240,000 14,000 82,000 50,000 5,100 58 J 960 J 3,300 U 10,700 0.11 0.20 57,000 5,100 U 5,300 U 620 J 6,100 100 J 760 J 830 U 300 U 0.1 U 0.1 U 220,000 2,400 J 20,000 J 68,000 330 58 J 27,000 J 1,600 J 1,800 J 0.1 U 0.1 U NA NA NA NA NA NA NA NA NA NA NA NA NA NA NA NA NA NA 1,400 J NA NA NA NA NA NA NA NA NA NA 1,600 J NA NA NA NA NA NA NA NA NA NA NA NA NA NA NA NA NA NA NA NA NA NA NA NA NA NA NA NA NA NA NA NA NA NA NA NA NA NA NA NA NA NA NA NA NA NA NA NA NA NA NA NA NA NA NA NA NA NA 770 NE 5300 78 39/200/390 37 380 830/3,300/6,600 600 0.008 0.007 5,000 3,500/5,100 50,000 1,000 200/1,000/2,000 100 1,000 2,000/8,000/16,000 4,000 0.10 0.10 NE NE NE NE NE 10,000 250,000 1,000 NE NE NE NE NE NE 250,000 300 10,000 250,000 NE NE NE NE NE NE NE NE NE NE NE NE NE NE NE NE NE NE NE NE NE NE NE NE NE NE NE NE NE 230,000 1.0 NE NE NE NE NE NE AM23G P:\Jackson County\Dillsboro GW\Analytical & Data\Water\2015\Fall\Tables\5002October2015Tables Page 3 of 4 Table 2 Summary of Detected Parameters Jackson County Closed Municipal Solid Waste Landfill, Jackson County, North Carolina Parameter CAS Number SWS ID Units Sample Name Collect Date MW-01 10/13/2015 MW-02 10/14/2015 MW-03 10/13/2015 MW-04 10/14/2015 MW-05R 10/14/2015 MW-06 10/13/2015 MW-07 10/14/2015 LT-01 10/13/2015 SW-01 10/14/2015 SW-02 10/14/2015 DW-01 10/13/2015 DW-02 10/13/2015 TRIPBLANK (DW)10/13/2015 TRIPBLANK (1)10/13/2015 TRIPBLANK (2)10/14/2015 MDL MRL SWSL 2L IMAC GWPS 2B 1. 2. 3. 4. 5. 6. 7. 8. 9. 10. 11. 12. 13. 14. 15. 16. 17. 18. Lab Certification Lab Method Natural Attenuation Parameters Field Parameters 402 5445 (pH only) Me t h a n e Et h a n e Et h e n e Ca r b o n D i o x i d e Hy d r o g e n Di s s o l v e d O x y g e n pH Tu r b i d i t y 74-82-8 74-84-0 74-85-1 124-38-9 133-74-0 7782-44-7 SW320 SW330 333 331 332 459 420 356 320 330 µg/L µg/L µg/L mg/L nM mg/L SU NTU Result Result Result Result Result Result Result Result 3,000 0.1 U 0.1 U 360 NA 1.03 5.75 34.47 0.5 U 0.1 U 0.1 U 80 NA 7.30 6.18 241.4 1.1 0.02 U 0.02 U 220 5.4 1.28 5.63 18.23 460 0.023 0.01 U 360 11 0.53 5.66 0.32 1,900 0.24 0.40 130 NA 2.68 6.67 417 180 0.10 0.39 190 2.6 2.58 5.56 18.00 110 0.028 0.070 200 2.0 1.97 6.03 3.23 NA NA NA NA NA 2.41 6.90 20.06 NA NA NA NA NA 11.01 7.66 4.60 NA NA NA NA NA 10.85 7.62 83.56 NA NA NA NA NA 6.36 6.83 23.20 NA NA NA NA NA 5.66 6.02 22.16 NA NA NA NA NA NA NA NA NA NA NA NA NA NA NA NA NA NA NA NA NA NA NA NA 0.008/0.033 0.001/0.002 0.003/0.004 0.26 0.18 NA NA NA 0.05/0.5 0.01/0.1 0.01/0.1 5.0 1.2 NA NA NA NE NE NE NE NE NE NE NE NE NE NE NE NE NE 6.5-8.5 NE NE NE NE NE NE NE NE NE NE NE NE NE NE NE NE NE NE NE NE NE NE above 5.0 6.0-9.0 50 AM20GAX P:\Jackson County\Dillsboro GW\Analytical & Data\Water\2015\Fall\Tables\5002October2015Tables Page 4 of 4 Table 3 Solid Waste Section Limits Exceedances Notifications Jackson County Closed Municipal Solid Waste Landfill, Jackson County, North Carolina FACILITY PERMIT WELL ID CAS Number SWS ID PARAMETER RESULT UNITS METHOD MDL MRL SWSL DILUTION FACTOR COLLECT DATE 50-02 5002-MW01 7440-39-3 15 Barium 100 ug/L EPA 6020A 0.041 5.0 100 1 10/13/2015 50-02 5002-MW01 7440-43-9 34 Cadmium 15 ug/L EPA 6020A 0.019 1.0 1 1 10/13/2015 50-02 5002-MW01 7440-48-4 53 Cobalt 150 ug/L EPA 6020A 0.013 1.0 10 1 10/13/2015 50-02 5002-MW01 7440-50-8 54 Copper 29 ug/L EPA 6020A 0.44 5.0 10 1 10/13/2015 50-02 5002-MW01 7440-66-6 213 Zinc 210 ug/L EPA 6020A 0.98 10 10 1 10/13/2015 50-02 5002-MW01 75-34-3 75 1,1-Dichloroethene 5.6 ug/L EPA 8260B 0.083 0.50 5 1 10/13/2015 50-02 5002-MW01 106-46-7 71 1,4-Dichlorobenzene 14 ug/L EPA 8260B 0.050 0.50 1 1 10/13/2015 50-02 5002-MW01 71-43-2 16 Benzene 1.5 ug/L EPA 8260B 0.048 0.50 1 1 10/13/2015 50-02 5002-MW01 108-90-7 39 Chlorobenzene 3.6 ug/L EPA 8260B 0.062 0.50 3 1 10/13/2015 50-02 5002-MW01 156-59-2 78 cis-1,2-Dichloroethene 9.0 ug/L EPA 8260B 0.056 0.50 2 1 10/13/2015 50-02 5002-MW02 7440-39-3 15 Barium 280 ug/L EPA 6020A 0.041 5.0 100 1 10/14/2015 50-02 5002-MW02 7440-41-7 23 Beryllium 1.5 ug/L EPA 6020A 0.047 1.0 1 1 10/14/2015 50-02 5002-MW02 7440-47-3 51 Chromium 44 ug/L EPA 6020A 0.51 1.0 10 1 10/14/2015 50-02 5002-MW02 7440-48-4 53 Cobalt 63 ug/L EPA 6020A 0.013 1.0 10 1 10/14/2015 50-02 5002-MW02 7440-50-8 54 Copper 56 ug/L EPA 6020A 0.44 5.0 10 1 10/14/2015 50-02 5002-MW02 7439-92-1 131 Lead 15 ug/L EPA 6020A 0.020 1.0 10 1 10/14/2015 50-02 5002-MW02 7440-62-2 209 Vanadium 61 ug/L EPA 6020A 2.5 5.0 25 1 10/14/2015 50-02 5002-MW02 7440-66-6 213 Zinc 110 ug/L EPA 6020A 0.98 10 10 1 10/14/2015 50-02 5002-MW03 7440-39-3 15 Barium 140 ug/L EPA 6020A 0.041 5.0 100 1 10/13/2015 50-02 5002-MW03 7440-48-4 53 Cobalt 49 ug/L EPA 6020A 0.013 1.0 10 1 10/13/2015 50-02 5002-MW03 106-46-7 71 1,4-Dichlorobenzene 9.2 ug/L EPA 8260B 0.050 0.50 1 1 10/13/2015 50-02 5002-MW03 108-90-7 39 Chlorobenzene 12 ug/L EPA 8260B 0.062 0.50 3 1 10/13/2015 50-02 5002-MW03 156-59-2 78 cis-1,2-Dichloroethene 2.8 ug/L EPA 8260B 0.056 0.50 2 1 10/13/2015 50-02 5002-MW04 7440-39-3 15 Barium 100 ug/L EPA 6020A 0.041 5.0 100 1 10/14/2015 50-02 5002-MW04 106-46-7 71 1,4-Dichlorobenzene 5.4 ug/L EPA 6020A 0.050 0.50 1 1 10/14/2015 50-02 5002-MW04 71-43-2 16 Benzene 1.0 ug/L EPA 8260B 0.048 0.50 1 1 10/14/2015 50-02 5002-MW04 108-90-7 39 Chlorobenzene 4.4 ug/L EPA 8260B 0.062 0.50 3 1 10/14/2015 50-02 5002-MW04 156-59-2 78 cis-1,2-Dichloroethene 5.4 ug/L EPA 8260B 0.056 0.50 2 1 10/14/2015 50-02 5002-MW05R 7440-39-3 15 Barium 300 ug/L EPA 6020A 0.041 5.0 100 1 10/14/2015 50-02 5002-MW05R 7440-41-7 23 Beryllium 1.2 ug/L EPA 6020A 0.047 1.0 1 1 10/14/2015 50-02 5002-MW05R 7440-47-3 51 Chromium 15 ug/L EPA 6020A 0.51 1.0 10 1 10/14/2015 50-02 5002-MW05R 7440-48-4 53 Cobalt 28 ug/L EPA 6020A 0.013 1.0 10 1 10/14/2015 50-02 5002-MW05R 7440-50-8 54 Copper 29 ug/L EPA 6020A 0.44 5.0 10 1 10/14/2015 50-02 5002-MW05R 7440-66-6 213 Zinc 61 ug/L EPA 6020A 0.98 10 10 1 10/14/2015 50-02 5002-MW05R 106-46-7 71 1,4-Dichlorobenzene 6.5 ug/L EPA 8260B 0.050 0.50 1 1 10/14/2015 50-02 5002-MW05R 71-43-2 16 Benzene 1.9 ug/L EPA 8260B 0.048 0.50 1 1 10/14/2015 50-02 5002-MW05R 108-90-7 39 Chlorobenzene 7.4 ug/L EPA 8260B 0.062 0.50 3 1 10/14/2015 50-02 5002-MW05R 75-01-4 211 Vinyl chloride 1.8 ug/L EPA 8260B 0.097 0.50 1 1 10/14/2015 P:\Jackson County\Dillsboro GW\Analytical & Data\Water\2015\Fall\Tables\5002October2015Tables Page 1 of 2 Table 3 Solid Waste Section Limits Exceedances Notifications Jackson County Closed Municipal Solid Waste Landfill, Jackson County, North Carolina FACILITY PERMIT WELL ID CAS Number SWS ID PARAMETER RESULT UNITS METHOD MDL MRL SWSL DILUTION FACTOR COLLECT DATE 50-02 5002-MW06 7440-48-4 53 Cobalt 100 ug/L EPA 6020A 0.013 1.0 10 1 10/13/2015 50-02 5002-MW06 7440-66-6 213 Zinc 14 ug/L EPA 6020A 0.98 10 10 1 10/13/2015 50-02 5002-MW06 75-34-3 75 1,1-Dichloroethane 6.4 ug/L EPA 8260B 0.083 0.50 5 1 10/13/2015 50-02 5002-MW06 106-46-7 71 1,4-Dichlorobenzene 8.1 ug/L EPA 8260B 0.050 0.5 1 1 10/13/2015 50-02 5002-MW06 71-43-2 16 Benzene 1.5 ug/L EPA 8260B 0.048 0.5 1 1 10/13/2015 50-02 5002-MW06 156-59-2 78 cis-1,2-Dichloroethene 7.7 ug/L EPA 8260B 0.056 0.5 2 1 10/13/2015 50-02 5002-MW07 7440-39-3 15 Barium 380 ug/L EPA 6020A 0.041 5 100 1 10/14/2015 50-02 5002-MW07 106-46-7 71 1,4-Dichlorobenzene 6.6 ug/L EPA 8260B 0.050 0.5 1 1 10/14/2015 50-02 5002-MW07 71-43-2 16 Benzene 1.7 ug/L EPA 8260B 0.048 0.5 1 1 10/14/2015 50-02 5002-MW07 108-90-7 39 Chlorobenzene 7.2 ug/L EPA 8260B 0.062 0.5 3 1 10/14/2015 50-02 5002-MW07 156-59-2 78 cis-1,2-Dichloroethene 6.2 ug/L EPA 8260B 0.056 0.5 2 1 10/14/2015 50-02 5002-LT01 106-46-7 71 1,4-Dichlorobenzene 6.0 ug/L EPA 8260B 0.050 0.5 1 1 10/13/2015 50-02 5002-LT01 71-43-2 16 Benzene 2.1 ug/L EPA 8260B 0.048 0.5 1 1 10/13/2015 50-02 5002-LT01 100-41-4 110 Ethylbenzene 7.1 ug/L EPA 8260B 0.061 0.50 1 1 10/13/2015 50-02 5002-LT01 108-90-7 39 Chlorobenzene 4.0 ug/L EPA 8260B 0.062 0.5 3 1 10/13/2015 50-02 5002-LT01 91-20-3 148 Naphthalene 21 ug/L EPA 8260B 0.19 1.0 10 1 10/13/2015 Notes: 1."CAS NUMBER" is a unique number assigned by the Chemical Abstracts Service (CAS) to all identified parameters. 2."SWS ID" is the Solid Waste Section Identification Number. 3."RESULT" is the analytical data reported by the laboratory. 4."UNITS" are micrograms per liter (µg/L) for analytical results. 5."METHOD" is the analytical method used to analyze the constituents. 6."MDL" is the method detection limit, which is the minimum concentration of a substance that can be measured and reported with 99% confidence that the analyte concentration is greater than zero. 7."MRL" is the method reporting limit, which is the minimum concentration of a target analyte that can be accurately determined by the referenced method. 8."SWSL" is the Solid Waste Section Limit. This limit (identified by DENR) is the lowest amount of analyte in a sample that can be quantitatively determined with suitable precision and accuracy. 9."COLLECT DATE" is the date on which the sample was collected in the field. 10.Shaded cells indicate result in exceedance of the 2L or Interim Maximum Allowable Concentration (IMAC) standards or greater than or equal to the Groundwater Protection Standard (GWPS [if no 2L or IMAC exist]). 11.2L Standard and IMAC are from "North Carolina Administrative Code, Title 15A: Department of Environment and Natural Resources, Subchapter 2L - Groundwater Classifications and Standards," DENR (Amended April 1, 2013). P:\Jackson County\Dillsboro GW\Analytical & Data\Water\2015\Fall\Tables\5002October2015Tables Page 2 of 2 Table 4 Water Quality Standards Exceedances Notifications Jackson County Closed Municipal Solid Waste Landfill, Jackson County, North Carolina FACILITY PERMIT WELL ID CAS Number SWS ID PARAMETER RESULT UNITS QUALIFIER METHOD MDL MRL SWSL DILUTION FACTOR WATER QUALITY STANDARD COLLECT DATE CAUSE AND SIGNIFICANCE 50-02 5002-MW01 7440-43-9 34 Cadmium 15 ug/L EPA 6020A 0.019 1.0 1 1 2 10/13/2015 50-02 5002-MW01 7440-48-4 53 Cobalt 150 ug/L EPA 6020A 0.013 1.0 10 1 1 10/13/2015 50-02 5002-MW01 7440-28-0 194 Thallium 2.0 ug/L J EPA 6020A 0.0093 1.0 5.5 1 0.2 10/13/2015 50-02 5002-MW01 106-46-7 71 1,4-Dichlorobenzene 14 ug/L EPA 8260B 0.050 0.50 1 1 6 10/13/2015 Anthropogenic. 50-02 5002-MW01 71-43-2 16 Benzene 1.5 ug/L EPA 8260B 0.048 0.50 1 1 1 10/13/2015 Consistent with historic measurements. 50-02 5002-MW01 127-18-4 192 Tetrachloroethene 0.85 ug/L J EPA 8260B 0.098 0.50 1 1 0.7 10/13/2015 Anthropogenic. 50-02 5002-MW01 NA 334 Iron, Ferrous 15,000 ug/L SM 3500-Fe B 390 2,000 NE 10 300 10/13/2015 50-02 5002-MW01 SW320 320 pH 5.75 SU NE 6.5-8.5 10/13/2015 50-02 5002-MW02 7440-47-3 51 Chromium 44 ug/L EPA 6020A 0.51 1.0 10 1 10 10/14/2015 50-02 5002-MW02 7440-48-4 53 Cobalt 63 ug/L EPA 6020A 0.013 1.0 10 1 1 10/14/2015 50-02 5002-MW02 7439-92-1 131 Lead 15 ug/L EPA 6020A 0.020 1.0 10 1 15 10/14/2015 50-02 5002-MW02 7440-28-0 194 Thallium 0.84 ug/L J EPA 6020A 0.0093 1.0 5.5 1 0.2 10/14/2015 50-02 5002-MW02 7440-62-2 209 Vanadium 61 ug/L EPA 6020A 2.5 5.0 25 1 0.3 10/14/2015 50-02 5002-MW02 SW320 320 pH 6.18 SU NE 6.5-8.5 10/14/2015 Consistent with historic measurements. 50-02 5002-MW03 7440-48-4 53 Cobalt 49 ug/L EPA 6020A 0.013 1.0 10 1 1 10/13/2015 Possibly naturally occurring. Consistent with historical measurements. 50-02 5002-MW03 106-46-7 71 1,4-Dichlorobenzene 9.2 ug/L EPA 8260B 0.050 0.50 1 1 6 10/13/2015 Anthropogenic. 50-02 5002-MW03 SW320 320 pH 5.63 SU NE 6.5-8.5 10/13/2015 Consistent with historic measurements. 50-02 5002-MW04 7440-48-4 53 Cobalt 3.1 ug/L J EPA 6020A 2.5 5.0 10 1 1 10/14/2015 Possibly naturally occurring. Consistent with historical measurements. 50-02 5002-MW04 71-43-2 16 Benzene 1.0 ug/L EPA 8260B 0.048 0.50 1 1 1 10/14/2015 Consistent with historic measurements. 50-02 5002-MW04 75-01-4 211 Vinyl chloride 0.74 ug/L J EPA 8260B 0.097 0.50 1 1 0.03 10/14/2015 Anthropogenic. 50-02 5002-MW04 SW320 320 pH 5.66 SU NE 6.5-8.5 10/14/2015 Consistent with historic measurements. Turbidity of sample 4.58 NTU. 50-02 5002-MW05R 7440-47-3 51 Chromium 15 ug/L EPA 6020A 0.51 1.0 10 1 10 10/14/2015 50-02 5002-MW05R 7440-48-4 53 Cobalt 28 ug/L EPA 6020A 0.013 1.0 10 1 1 10/14/2015 50-02 5002-MW05R 7440-28-0 194 Thallium 0.57 ug/L J EPA 6020A 0.0093 1.0 5.5 1 0.2 10/14/2015 50-02 5002-MW05R 7440-62-2 209 Vanadium 24 ug/L J EPA 6020A 2.5 5.0 25 1 0.3 10/14/2015 50-02 5002-MW05R 106-46-7 71 1,4-Dichlorobenzene 6.5 ug/L EPA 8260B 0.050 0.50 1 1 6 10/14/2015 Anthropogenic 50-02 5002-MW05R 71-43-2 16 Benzene 1.9 ug/L EPA 8260B 0.048 0.50 1 1 50 10/14/2015 Anthropogenic 50-02 5002-MW05R 75-01-4 211 Vinyl chloride 1.8 ug/L EPA 8260B 0.097 0.50 1 1 0.03 10/14/2015 Anthropogenic 50-02 5002-MW05R NA 334 Iron, Ferrous 5,100 mg/L SM 3500-Fe B 200 1000 NE 5 300 10/14/2015 Consitent with historical measurements. 50-02 5002-MW06 7440-48-4 53 Cobalt 100 ug/L EPA 6020A 0.013 1.0 10 1 1 10/13/2015 50-02 5002-MW06 7440-28-0 194 Thallium 0.77 ug/L J EPA 6020A 0.0093 1.0 5.5 1 0.2 10/13/2015 50-02 5002-MW06 75-34-3 75 1,1-Dichloroethane 6.4 ug/L EPA 8260B 0.083 0.50 5 1 6 10/13/2015 Anthropogenic 50-02 5002-MW06 106-46-7 71 1,4-Dichlorobenzene 8.1 ug/L EPA 8260B 0.050 0.50 1 1 6 10/13/2015 Anthropogenic 50-02 5002-MW06 71-43-2 16 Benzene 1.5 ug/L EPA 8260B 0.048 0.50 1 1 1 10/13/2015 Anthropogenic 50-02 5002-MW06 NA 334 Ferrous Iron 6,100 ug/L SM3500-Fe D 200 1000 NE 5 300 10/13/2015 50-02 5002-MW06 SW320 320 pH 5.56 SU NE 6.5-8.5 10/13/2015 50-02 5002-MW07 7440-28-0 194 Thallium 0.21 ug/L J EPA 6020A 0.0093 1.0 5.5 1 0.2 10/14/2015 Possibly naturally occurring. 50-02 5002-MW07 106-46-7 71 1,4-Dichlorobenzene 6.6 ug/L EPA 8260B 0.050 0.50 1 1 6 10/14/2015 50-02 5002-MW07 71-43-2 16 Benzene 1.7 ug/L EPA 8260B 0.048 0.50 1 1 1 10/14/2015 50-02 5002-MW07 75-01-4 211 Vinyl chloride 0.55 ug/L J EPA 8260B 0.097 0.50 1 1 0.03 10/14/2015 50-02 5002-MW07 NA 334 Ferrous Iron 330 ug/L SM3500-Fe D 39 200 NE 1 300 10/14/2015 50-02 5002-MW07 SW320 320 pH 6.03 SU NE 6.5-8.5 10/14/2015 50-02 5002-SW01 7439-97-6 132 Mercury 0.016 ug/L J EPA 7470A 0.011 0.20 0.2 1 0.012 10/14/2015 50-02 5002-SW02 7439-97-6 132 Mercury 0.012 ug/L J EPA 7470A 0.011 0.20 0.2 1 0.012 10/14/2015 50-02 5002-SW02 SW330 330 Turbidity 83.56 NTU NE 50 10/14/2015 Due to high water levels the sample was collected in stagnant water. Notes: 1."CAS NUMBER" is a unique number assigned by the Chemical Abstracts Service (CAS) to all identified parameters. 2."SWS ID" is the Solid Waste Section Identification Number. 3."RESULT" is analytical data reported by the laboratory or field data collected by Altamont. 4."UNITS" are micrograms per liter (µg/L) and milligrams per liter (mg/L) for analytical results and Standard Units (SU) for pH. 5."QUALIFIER" is a data qualifier or "flag". A blank cell indicates that there is no qualifier associated with the reported result. 6."METHOD" is the analytical method used to analyze the constituents. 7."MDL" is the method detection limit, which is the minimum concentration of a substance that can be measured and reported with 99% confidence that the analyte concentration is greater than zero. 8."MRL" is the method reporting limit, which is the minimum concentration of a target analyte that can be accurately determined by the referenced method. 9."SWSL" is the Solid Waste Section Limit. This limit (identified by DENR) is the lowest amount of analyte in a sample that can be quantitatively determined with suitable precision and accuracy. 10."WATER QUALITY STANDARD" refers to the 2L Standard, Interim Maximum Allowable Concentration (IMAC), and Groundwater Protection Standard (GWPS) for groundwater or the 2B Standard for surface water. 11."COLLECT DATE" is the date on which the sample was collected in the field. 12."NE" means Not Established. 13.2L Standard and IMAC are from "North Carolina Administrative Code, Title 15A: Department of Environment and Natural Resources, Subchapter 2L - Groundwater Classifications and Standards," DENR (Amended April 1, 2013). The IMAC concentrations listed in Appendix #1 of the 2L rule. 14.GWPS is pursuant to "15A NCAC 13B .1634," DENR. Current standards were obtained from http://portal.ncdenr.org/web/sw/envmonitoringlist (last updated June 13, 2011). Anthropogenic. Consistent with historic measurements. Consistent with historic measurements. Turbidity of sample 241.4 NTU. Possibly naturally occurring. Consistent with historical measurements. Consistent with historic measurements. Possibly naturally occurring. Turbidity of sample 417.0. Possibly naturally occurring. Consistent with historical measurements. Consistent with historic measurements. P:\Jackson County\Dillsboro GW\Analytical & Data\Water\2015\Fall\Tables\5002October2015Tables Page 1 of 1 Table 5 Well Construction Details and Corresponding Elevations Jackson County Closed Municipal Solid Waste Landfill, Jackson County, North Carolina Date Drilled Ground Surface Elevation TOC Elevation Stick Up Total Well Depth (see Note 10) Depth To Water (see Note 10) Groundwater Elevation Approx. Depth to Bedrock Approx. Top of Bedrock Elevation Depth to Top of Screened Interval Depth to Bottom of Screened Interval Top Elevation of Screened Interval Elevation of Bottom of Screened Interval (mm/dd/yyyy)(feet)(feet) (feet above ground surface) (feet below TOC) (feet below TOC) (feet)(feet bgs)(feet)(feet bgs)(feet bgs)(feet)(feet) 50-02 MW-01 04/23/1992 2,169.40 2,171.42 2.0 112.7 102.79 2,068.63 83.0 2,086.40 95.0 110.0 2,074.40 2,059.40 bedrock S&ME, Inc. 50-02 MW-02 04/22/1992 2,013.15 2,015.38 2.3 62.63 39.98 1,975.40 13.0 2,000.15 45.0 60.0 1,968.15 1,953.15 bedrock S&ME, Inc. 50-02 MW-03 04/21/1992 2,044.16 2,045.53 1.3 65.5 52.26 1,993.27 57.0 1,987.16 48.5 63.5 1,995.66 1,980.66 partially weathered bedrock S&ME, Inc. 50-02 MW-04 04/21/1992 1,978.68 1,980.77 2.0 45.0 27.18 1,953.59 NA NA 25.0 40.0 1,953.68 1,938.68 saprolite S&ME, Inc. 50-02 MW-05R 01/26/2012 2,027.98 2,030.95 2.8 56.59 50.56 1,980.39 NA NA 44.0 54.0 1,983.98 1,973.98 saprolite Altamont Environmental, Inc. 50-02 MW-06 03/23/2004 2,136.58 2,139.57 3.0 97.0 88.59 2,050.98 47.6 2,088.98 84.6 94.6 2,051.98 2,041.98 bedrock 50-02 MW-07 07/30/2010 1,978.71 1,981.29 2.6 97.6 32.07 1,949.22 44.0 1,935.00 70.0 95.0 1,908.71 1,883.71 bedrock Notes: 1. Elevations associated with wells MW-01, MW-02, MW-03, MW-04, and MW-06 are measured relative to mean sea level (msl) and are based on surveying completed by Davenport & Associates, Inc.. 2. Elevations associated with wells MW-05R and MW-07 are measured relative to horizontal North American Datum (NAD) 83 and are based on surveying completed by Wes Cole Land Surveying, P.A.. 3. "TOC" means Top of Casing. 4. "bgs" means below ground surface. 5. "NA" means Not Applicable. 6. MW-01 through MW-04 Depth to Bedrock and Screened Interval taken from S&ME boring logs completed April 21, 22, and 23, 1992. 7. MW-06 Depth to Bedrock and Screened Interval taken from Altamont boring log completed March 23, 2004. 8. MW-07 Depth to Bedrock and Screened Interval taken from Altamont boring log completed July 30, 2010. 9. MW-05R Screened Interval taken from Altamont boring log completed January 26, 2012. 10. Depth to water measured on October 13 and 14, 2015. 10. Monitoring well MW-05 was abandoned on January 26, 2012 by NYEG Drilling, LLC. 11. Monitoring well MW-05R was installed on January 26, 2012 as a replacement to the well MW-05 by NYEG Drilling, LLC. 12. The well MW-5R was surveyed by Wes Cole Land Surveying, P.A. on September 28, 2012. Facility Permit Well ID Source of Well Construction Information Geology of Screened Interval Altamont Environmental, Inc. P:\Jackson County\Dillsboro GW\Analytical & Data\Water\2015\Fall\Tables\5002October2015 T5-Well Construction Details Page 1 of 1 Table 6 Mass Removal Calculations for Volatile Organic Compounds (VOCs) Detected in the Leachate Sample (LT-01) Jackson County Closed Municipal Solid Waste Landfill, Jackson County, North Carolina Cumulative Flow Differential Flow Mass Removed Cumulative Mass Removed Beginning Ending (gallons)(gallons)(pounds)(pounds) 09/01/2012 10/25/2012 1,4-Dichlorobenzene 0.0034 11,500 11,500 0.00033 4-Methyl-2- pentanone (MIBK)0.0021 J 0.00020 Acetone 0.0292 0.00280 Benzene 0.0021 0.00020 Chlorobenzene 0.0029 0.00028 cis-1,2- Dichloroethene 0.00063 J 0.00006 Dichlorodifluoro- methane 0.00093 J 0.00009 Ethylbenzene 0.0102 0.00098 Naphthalene 0.0069 0.00066 Styrene 0.00033 J 0.00003 Toluene 0.003 0.00029 Xylene (Total)0.0094 0.00090 Total 0.00682 0.00682 10/26/2012 04/11/2013 1,4-Dichlorobenzene 0.006 65,500 54,000 0.00270 Acetone 0.012 J 0.00540 Benzene 0.0011 0.00049 Carbon disulfide 0.0067 J 0.00301 Chlorobenzene 0.0024 J 0.00108 cis-1,2- Dichloroethene 0.00058 J 0.00026 Ethylbenzene 0.0083 0.00373 Toluene 0.00059 J 0.00027 Xylene (Total)0.0078 0.00351 Total 0.02045 0.02727 04/12/2013 10/08/2013 1,4-Dichlorobenzene 0.0055 114,737 49,237 0.00226 4-Methyl-2- pentanone (MIBK)0.0012 J 0.00049 Benzene 0.0020 0.00082 Chlorobenzene 0.0039 0.00160 cis-1,2- Dichloroethene 0.00080 J 0.00033 Ethylbenzene 0.0151 0.00619 Naphthalene 0.0184 0.00754 Toluene 0.0012 0.00049 Xylene (Total)0.0090 0.00369 Total 0.02341 0.05068 Sample Dates Detected Volatile Organic Compounds Concentration in LT-01 (mg/L) P:\Jackson County\Dillsboro GW\Analytical & Data\Water\2015\Fall\Tables\5002October2015Table6 1 of 3 Table 6 Mass Removal Calculations for Volatile Organic Compounds (VOCs) Detected in the Leachate Sample (LT-01) Jackson County Closed Municipal Solid Waste Landfill, Jackson County, North Carolina 10/09/2013 04/08/2014 1,4-Dichlorobenzene 0.0056 168,821 54,084 0.00252 Benzene 0.0018 0.00081 Chlorobenzene 0.0051 0.00230 cis-1,2- Dichloroethene 0.00049 J 0.00022 Ethylbenzene 0.0047 0.00212 Toluene 0.00041 J 0.00018 Xylene (Total)0.0021 J 0.00095 Total 0.00910 0.05978 04/08/2014 10/23/2014 1,4-Dichlorobenzene 0.0053 179,652 10,831 0.00048 Benzene 0.0014 0.00013 Chlorobenzene 0.003 0.00027 cis-1,2- Dichloroethene 0.00049 J 0.00004 Ethylbenzene 0.0027 0.00024 Toluene 0.00051 J 0.00005 Xylene (Total)0.0014 J 0.00013 Total 0.00133 0.06111 10/23/2014 04/21/2015 1,2,3- Trimethylbenzene 0.00062 219,965 40,313 0.00021 1,2,4- Trimethylbenzene 0.00076 0.00026 2-Chlorotoluene 0.00067 0.00022 1,4-Dichlorobenzene 0.0059 0.00198 Acetone 0.00790 0.00265 Benzene 0.0022 0.00074 Chlorobenzene 0.003 0.00101 Ethylbenzene 0.0056 0.00188 Isopropylbenzene 0.0013 0.00044 Methy Tert-butyl- Ether 0.0013 0.00044 Napthalene 0.024 0.00806 n-Propylbenzene 0.00088 0.00030 Tetrahydrofuran 0.089 0.02988 Toluene 0.00054 J 0.00018 Vinyl Chloride 0.00038 J 0.00013 Xylene (Total)0.0030 J 0.00101 Total 0.04937 0.11048 P:\Jackson County\Dillsboro GW\Analytical & Data\Water\2015\Fall\Tables\5002October2015Table6 2 of 3 Table 6 Mass Removal Calculations for Volatile Organic Compounds (VOCs) Detected in the Leachate Sample (LT-01) Jackson County Closed Municipal Solid Waste Landfill, Jackson County, North Carolina 04/21/2015 10/13/2015 1,4-Dichlorobenzene 0.00600 256,685 36,720 0.00201 2-Butanone 0.00960 J 0.00322 Benzene 0.00210 0.00071 Chlorobenzene 0.0040 0.00134 Ethylbenzene 0.00710 0.00238 m,p-Xylenes 0.0014 0.00047 Naphthalene 0.021 0.00705 o-Xylene 0.0017 0.00057 Tetrahydrofuran 0.062 0.02081 Toluene 0.00058 J 0.00019 Total Xylenes 0.0031 J 0.00104 Total 0.03981 0.15029 Notes: 1. Only detected VOCs in leachate sample LT-01 are included in the mass removal calculation. 2. Leachate extraction at the landfill initiated on September 1, 2012. 3. Extraction volume measurements were recorded and provided by Jackson County staff. 4. Altamont bases mass removal calculations on the assumption that the VOCs concentration in one sampling event is representative of leachate quality until the next sampling event occurs, and that the leachate removal system has a 100% removal and treatment efficiency. 5. The Cumulative Flow is interpolated between LT-01 Sample Dates. 6. The Differential Flow represents the total flow between the LT-01 Sample Dates. 7. Mass Removed and Treated is estimated based upon a conversion of milligrams to pounds and liters to gallons and the multiplication of the Concentration by the Differential Flow for the specified period. 8. mg/L means milligrams per liter. 9. "J" indicates laboratory estimated concentration above the adjusted method detection limit and below the adjusted reporting limit. P:\Jackson County\Dillsboro GW\Analytical & Data\Water\2015\Fall\Tables\5002October2015Table6 3 of 3 APPENDICES APPENDIX A Well Sampling Logs and Equipment Documentation & Instrument Calibration Data Sheets APPENDIX B Reports of Laboratory Analysis, Chain-of-Custody Documentation, and Certificates of Analysis Page 1 of 67 Page 2 of 67 Page 3 of 67 Page 4 of 67 Page 5 of 67 Page 6 of 67 Page 7 of 67 Page 8 of 67 Page 9 of 67 Page 10 of 67 Page 11 of 67 Page 12 of 67 Page 13 of 67 Page 14 of 67 Page 15 of 67 Page 16 of 67 Page 17 of 67 Page 18 of 67 Page 19 of 67 Page 20 of 67 Page 21 of 67 Page 22 of 67 Page 23 of 67 Page 24 of 67 Page 25 of 67 Page 26 of 67 Page 27 of 67 Page 28 of 67 Page 29 of 67 Page 30 of 67 Page 31 of 67 Page 32 of 67 Page 33 of 67 Page 34 of 67 Page 35 of 67 Page 36 of 67 Page 37 of 67 Page 38 of 67 Page 39 of 67 Page 40 of 67 Page 41 of 67 Page 42 of 67 Page 43 of 67 Page 44 of 67 Page 45 of 67 Page 46 of 67 Page 47 of 67 Page 48 of 67 Page 49 of 67 Page 50 of 67 Page 51 of 67 Page 52 of 67 Page 53 of 67 Page 54 of 67 Page 55 of 67 Page 56 of 67 Page 57 of 67 Page 58 of 67 Page 59 of 67 Page 60 of 67 Page 61 of 67 Page 62 of 67 Page 63 of 67 Page 64 of 67 Page 65 of 67 Page 66 of 67 Page 67 of 67 Page 1 of 69 Page 2 of 69 Page 3 of 69 Page 4 of 69 Page 5 of 69 Page 6 of 69 Page 7 of 69 Page 8 of 69 Page 9 of 69 Page 10 of 69 Page 11 of 69 Page 12 of 69 Page 13 of 69 Page 14 of 69 Page 15 of 69 Page 16 of 69 Page 17 of 69 Page 18 of 69 Page 19 of 69 Page 20 of 69 Page 21 of 69 Page 22 of 69 Page 23 of 69 Page 24 of 69 Page 25 of 69 Page 26 of 69 Page 27 of 69 Page 28 of 69 Page 29 of 69 Page 30 of 69 Page 31 of 69 Page 32 of 69 Page 33 of 69 Page 34 of 69 Page 35 of 69 Page 36 of 69 Page 37 of 69 Page 38 of 69 Page 39 of 69 Page 40 of 69 Page 41 of 69 Page 42 of 69 Page 43 of 69 Page 44 of 69 Page 45 of 69 Page 46 of 69 Page 47 of 69 Page 48 of 69 Page 49 of 69 Page 50 of 69 Page 51 of 69 Page 52 of 69 Page 53 of 69 Page 54 of 69 Page 55 of 69 Page 56 of 69 Page 57 of 69 Page 58 of 69 Page 59 of 69 Page 60 of 69 Page 61 of 69 Page 62 of 69 Page 63 of 69 Page 64 of 69 Page 65 of 69 Page 66 of 69 Page 67 of 69 Page 68 of 69 Page 69 of 69 APPENDIX C Environmental Monitoring Reporting Form and Electronic Submittal of Environmental Monitoring Data 5002Oct2015 (electronic submittal only)