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HomeMy WebLinkAbout2601_CumberlandCoMSW_GWMR_DIN27293_20170119Cumberland County Subtitle D Landfill Facility Permit No. 2601-MSWLF-1997 Semi-Annual Sampling Report (August 2016 Sampling Event) Report Prepared January 2017 5400 Glenwood Avenue, Suite 400 Raleigh, North Carolina 27612 tel: 919 325-3500 fax: 919 781-5730 January 19, 2017 Mr. Ervin Lane North Carolina Department of Environmental Quality Division of Waste Management Solid Waste Section 1646 Mail Service Center Raleigh, North Carolina 27699-1646 Subject: August 2016 Semi-Annual Sampling Report Cumberland County Subtitle D Landfill Facility Permit No. 2601-MSWLF-1997 Dear Mr. Lane: CDM Smith Inc. (CDM Smith), on behalf of Cumberland County (County), is submitting an electronic copy of the August 2016 semi-annual sampling event report. This letter report presents the results of the semi-annual sampling event that was recently completed at the Cumberland County Subtitle D Landfill and constitutes the second semi-annual sampling event for 2016. The current groundwater monitoring network consists of the following wells: MW-F, -I, -J, and background well -E Rep. Surface water sample locations include SW-4, -5, and -6, which also serve as monitoring locations for the closed Ann Street Landfill. Field activities and sampling results are discussed below. Field Activities Groundwater and surface water samples from the Cumberland County Subtitle D Landfill were collected on August 25-26, 2016. The groundwater samples were collected by use of a peristaltic pump using low-flow sampling techniques with the exception of samples collected from MW-E Rep. Samples were collected from MW-E Rep by use of a disposable, laboratory decontaminated bailer. Monitoring well and surface water sampling locations are presented on Figure 1. Well construction details for each monitoring well are summarized in Table 1. Groundwater elevations were measured at each well prior to sampling and are presented in Table 2. These groundwater elevations were used to construct the potentiometric contours for this sampling event as shown on Figure 1. Note that the groundwater elevation from the former background monitoring well, Old MW-E, was used for the potentiometric surface interpretation. The groundwater elevations and potentiometric contours were used to estimate groundwater velocities at each well as presented in Table 3. After depth to groundwater was measured, water was purged from each well to provide fresh formation water within the well water column prior to sampling. Each well volume and surface water sample was measured for pH, conductivity, temperature, turbidity, dissolved oxygen, and Mr. Ervin Lane January 19, 2017 Page 2 oxidation-reduction potential using a YSI-556 multi-parameter water quality meter and a HANNA HI 98703 turbidity meter. The water quality parameters at the time of sampling are presented in Table 4. Sampling Results Environmental Conservation Laboratories, Inc. located in Cary, North Carolina, analyzed all samples for the North Carolina Appendix I volatile organic compounds (VOCs) and metals. VOCs were analyzed using U.S Environmental Protection Agency (EPA) Method 8260B and metals were analyzed using EPA Methods 6010D and 6020B. In accordance with Solid Waste Section (SWS) guidelines the analytical results were reported to the laboratory specific method detection limit (MDL) and are quantifiable at or below SWS Limits (SWSLs). All monitoring wells and surface water locations for the Subtitle D Landfill had detections of analytes above the laboratory specific MDL but below the SWSL. These detections were qualified with “J” flags, which indicate an estimated concentration. The following list indicates which analytes were detected above the laboratory MDL at each sampling location. No “J” flag detections are provided. Underlined analytes exceeded the 15A NCAC 02L .0202 (NC 2L) Groundwater Quality Standard, Groundwater Protection Standard, or the 15A NCAC 02B Surface Water Quality Standard for Class C Waters. A complete summary of all detected and estimated concentrations for the March 2011 through August 2016 sampling events is presented in Table 5. A temporary groundwater monitoring well (TW-1) and a temporary surface water sampling location (TSW- 1) were located within the Cells 6-8 expansion. TW-1 has been abandoned and TSW-1 is no longer sampled; however the historical results are provided in Table 5. The laboratory analytical data reports are provided in Appendix A. MW-E Rep (Background) Metals: None Detected Volatile Organic Compounds: None Detected MW-F Metals: Cobalt, Zinc Volatile Organic Compounds: None Detected MW-I Metals: None Detected Volatile Organic Compounds: None Detected MW-J Metals: Arsenic, Barium, Beryllium, Chromium, Cobalt, Copper, Lead, Vanadium, Zinc Volatile Organic Compounds: None Detected Mr. Ervin Lane January 19, 2017 Page 3 SW-4 Metals: None Detected Volatile Organic Compounds: None Detected SW-5 Metals: Barium, Zinc Volatile Organic Compounds: None Detected SW-6 Metals: Barium, Zinc Volatile Organic Compounds: None Detected “J” flags were not included in the previous list, but several sampling locations had “J” flag detections that exceeded the standards. The “J” flag constituents above the standards along with their location are listed below. Cobalt: MW-I, SW-5, and -6 Copper: SW-4 Vanadium: MW-E Rep and -I Quality assurance and quality control samples were analyzed for the August 2016 sampling event. A duplicate sample, labeled DUP, was collected from MW-F and had analyte concentrations similar to the primary sample. No analytes were detected above laboratory MDLs in the trip blank. Table 6 presents a summary of all parameters detected during the August 2016 sampling event that exceeded the NC 2L or Groundwater Protection Standards. CDM Smith, on behalf of the County, submitted the results of an Alternative Source Demonstration (ASD) for the site on November 8, 2016. The ASD was prepared in accordance with Solid Waste rule .1633(c)(3), to demonstrate that select metals exceeding the NC 2L Groundwater Standards detected in monitoring wells at the site are naturally occurring and not related to a release from the landfill. As part of the ASD, in order to determine if turbidity was a contributing factor to total reported metals, filtered samples were collected during the August 2016 sampling event and analyzed for dissolved metals. Dissolved metal sample results are provided in Table 5. Based on qualitative and quantitative evaluation of current and historic groundwater sampling data, the NC 2L metal exceedances were determined to be indicative of naturally occurring background concentrations as opposed to a release from the landfill. The County will continue with the semi-annual groundwater monitoring program. The next sampling event will take place during the spring of 2017. If you have any questions or require further explanation, do not hesitate to call me at (919) 325-3500 or by email at weispfenningam@cdmsmith.com. Mr. Ervin Lane January 19, 2017 Page 4 Very truly yours, Aaron M. Weispfenning, P.E. CDM Smith, Inc. Attachments cc: Jerod Roberts, Cumberland County Jeffrey Brown, Cumberland County Table 1 Monitoring Well Construction Summary Cumberland County Subtitle D Landfill Facility Permit Number 2601-MSWLF-1997 Screened Interval Filter Interval Seal Interval 2601-MSWLF-1997 MW-E Rep (Background Well)11/11/2004 35.06416 78.86296 Surficial Aquifer 18 8.0-18.0 6.0-18.0 4.0-6.0 2.0 2601-MSWLF-1997 MW-F 11/7/1997 35.06468 78.86227 Surficial Aquifer 30 15.0-30.0 13.0-30.0 11.0-13.0 2.0 2601-MSWLF-1997 MW-I 12/15/2000 35.06978 78.85958 Surficial Aquifer 29 14.0-29.0 12.0-29.0 10.0-12.0 2.0 2601-MSWLF-1997 MW-J 12/15/2000 35.07017 78.85970 Surficial Aquifer 30 15.0-30.0 13.0-30.0 11.0-13.0 2.0 Notes: 1. bgs - Below Ground Surface 2. Background well MW-E was replaced with MW-E Rep on November 11, 2004. 3. Horizontal Control - World Geodetic System 1984 Facility Permit Number Depth (feet bgs)Total Depth (feet bgs) Monitoring Well Diameter (inches) Monitoring Well Code Geology of Sceened Interval Completion Date Latitude Longitude Page 1 of 1 January 2017 Table 2 Groundwater Elevations August 2016 Semi-Annual Sampling Event Cumberland County Subtitle D Landfill Facility Permit Number 2601-MSWLF-1997 3/28/11 9/27/11 3/6/12 9/26/12 6/5/13 11/12/13 4/22/14 11/5/14 5/27/15 11/10/15 3/15/16 8/25/16 2601-MSWLF-1997 MW-E 86.59 ------------------72.11 72.63 73.47 2601-MSWLF-1997 MW-E Rep 92.01 73.53 73.50 73.32 74.03 74.04 74.29 75.30 74.14 74.66 73.86 75.73 74.06 2601-MSWLF-1997 MW-F 93.45 73.47 73.54 73.14 73.99 74.05 74.25 74.84 74.07 74.39 73.66 74.66 73.73 2601-MSWLF-1997 TW-1 89.61 ------------------------ 2601-MSWLF-1997 MW-I 90.12 70.60 70.47 70.24 70.57 70.64 70.91 71.27 71.16 71.43 71.13 71.70 71.40 2601-MSWLF-1997 MW-J 90.48 70.28 70.15 69.94 70.25 70.42 70.59 70.97 70.85 71.12 70.84 71.41 71.01 Notes: 1. AMSL - Above Mean Sea Level 2. TOC - Top of Casing 3. Background well MW-E was replaced with MW-E Rep on November 11, 2004. 4. (--) Water level not recorded. 5. TW-1 was abandoned during the Subtitle D landfill expansion. Groundwater Elevations (AMSL)Facility Permit Number TOC Elevation (feet AMSL) Monitoring Well Code Page 1 of 1 January 2017 Table 3 Summary of Calculated Groundwater Flow Velocities August 2016 Semi-Annual Sampling Event Cumberland County Subtitle D Landfill Facility Permit Number 2601-MSWLF-1997 Hydraulic Average Average Average Average Average Average Conductivity Linear Velocity Linear Velocity Linear Velocity Linear Velocity Linear Velocity Linear Velocity feet/day (cm/s)feet/day feet/day feet/day feet/day feet/day feet/day 2601-MSWLF-1997 MW-E 53.00 0.25 ****************** 1.87E-02 2601-MSWLF-1997 MW-E Rep 1.90 0.25 0.0013 1.01E-02 0.0014 1.05E-02 0.0014 1.04E-02 0.0016 1.19E-02 0.0015 1.16E-02 0.0015 1.16E-02 6.70E-04 2601-MSWLF-1997 MW-F 1.78 0.25 0.0013 9.50E-03 0.0014 1.02E-02 0.0013 9.60E-03 0.0016 1.13E-02 0.0016 1.13E-02 0.0016 1.11E-02 6.28E-04 2601-MSWLF-1997 TW-1 180.00 0.25 ****** 6.35E-02 2601-MSWLF-1997 MW-I 1.11 0.25 0.0013 5.72E-03 0.0013 5.91E-03 0.0014 6.01E-03 0.0015 6.75E-03 0.0015 6.64E-03 0.0015 6.60E-03 3.92E-04 2601-MSWLF-1997 MW-J 1.97 0.25 0.0014 1.07E-02 0.0014 1.10E-02 0.0014 1.11E-02 0.0016 1.24E-02 0.0015 1.19E-02 0.0015 1.21E-02 6.95E-04 Notes: 1. * - TW-1 was abandoned during the Subtitle D landfill expansion. 2. ** - Estimated from "Specific Yields of Various Geologic Materials," USGS Water Supply Paper 1662-D. 3. *** - Background well MW-E was replaced with MW-E Rep on November 11, 2004. 4. cm/s - centimeters per second GradientGradientGradientGradientGradientGradient 6/5/20139/26/20129/27/2011 3/6/2012 Monitoring Well Code Facility Permit Number Sampling Date: Effective Porosity ** 3/28/2011 11/12/2013 Page 1 of 2 January 2017 Table 3 Summary of Calculated Groundwater Flow Velocities August 2016 Semi-Annual Sampling Event Cumberland County Subtitle D Landfill Facility Permit Number 2601-MSWLF-1997 Hydraulic Conductivity feet/day (cm/s) 2601-MSWLF-1997 MW-E 53.00 0.25 1.87E-02 2601-MSWLF-1997 MW-E Rep 1.90 0.25 6.70E-04 2601-MSWLF-1997 MW-F 1.78 0.25 6.28E-04 2601-MSWLF-1997 TW-1 180.00 0.25 6.35E-02 2601-MSWLF-1997 MW-I 1.11 0.25 3.92E-04 2601-MSWLF-1997 MW-J 1.97 0.25 6.95E-04 Monitoring Well Code Facility Permit Number Sampling Date: Effective Porosity ** Average Average Average Average Average Average Linear Velocity Linear Velocity Linear Velocity Linear Velocity Linear Velocity Linear Velocity feet/day feet/day feet/day feet/day feet/day feet/day ****************** 0.0017 1.33E-02 0.0013 1.02E-02 0.0014 1.08E-02 0.0012 9.21E-03 0.0016 1.25E-02 0.0012 8.93E-03 0.0017 1.18E-02 0.0014 9.64E-03 0.0014 9.80E-03 0.0012 8.38E-03 0.0014 9.80E-03 0.0011 7.72E-03 ****** 0.0018 7.87E-03 0.0013 5.82E-03 0.0014 6.30E-03 0.0012 5.33E-03 0.0018 7.87E-03 0.0012 5.19E-03 0.0018 1.42E-02 0.0014 1.08E-02 0.0015 1.16E-02 0.0013 9.92E-03 0.0018 1.42E-02 0.0013 1.00E-02 Notes: 1. * - TW-1 was abandoned during the Subtitle D landfill expansion. 2. ** - Estimated from "Specific Yields of Various Geologic Materials," USGS Water Supply Paper 1662-D. 3. *** - Background well MW-E was replaced with MW-E Rep on November 11, 2004. 4. cm/s - centimeters per second 8/25/2016 Gradient 3/15/2016 Gradient 11/10/2015 Gradient 11/5/20144/22/2014 5/27/2015 Gradient Gradient Gradient Page 2 of 2 January 2017 Table 4 Water Quality Parameters August 2016 Semi-Annual Sampling Event Cumberland County Subtitle D Landfill Facility Permit Number 2601-MSWLF-1997 pH Conductivity Temp.Turb.DO ORP pH Conductivity Temp.Turb.DO ORP pH Conductivity Temp.Turb.DO ORP (S.U.)(µS/cm)(deg. C)(NTUs)(mg/L)(mVs)(S.U.)(µS/cm)(deg. C)(NTUs)(mg/L)(mVs)(S.U.)(µS/cm)(deg. C)(NTUs)(mg/L)(mVs) 2601-MSWLF-1997 MW-E ------------------------------------ 2601-MSWLF-1997 MW-E Rep 6.44 277 15.3 118 3.47 48.4 5.60 317 20.8 31 2.79 59.4 5.65 333 16.5 >1,000 4.22 115.1 2601-MSWLF-1997 MW-F 5.58 316 18.1 2 1.78 57.2 5.65 351 21.3 7 1.89 71.3 5.51 396 19.3 1 1.94 64.2 2601-MSWLF-1997 TW-1 ------------------------------------ 2601-MSWLF-1997 MW-I 5.58 122 16.8 27 2.28 56.8 5.48 156 20.0 7 1.81 95.9 5.40 178 17.9 17 1.37 71.8 2601-MSWLF-1997 MW-J 5.43 187 16.8 3 2.71 59.7 5.44 212 20.4 8 2.29 165.8 5.31 234 18.7 2 2.71 124.2 2601-MSWLF-1997 SW-4 6.83 984 10.6 84 13.65 50.8 7.63 321 28.1 132 8.71 -24.1 7.12 723 15.8 129 8.69 -62.8 2601-MSWLF-1997 SW-5 6.99 1,117 11.9 43 9.26 43.5 7.26 1,407 24.6 23 4.05 22.9 6.68 1,194 15.6 51 7.65 34.1 2601-MSWLF-1997 SW-6 8.06 549 13.4 33 8.89 35.8 7.41 380 22.8 19 5.07 28.2 7.25 457 14.9 10 10.65 33.8 pH Conductivity Temp.Turb.DO ORP pH Conductivity Temp.Turb.DO ORP pH Conductivity Temp.Turb.DO ORP (S.U.)(µS/cm)(deg. C)(NTUs)(mg/L)(mVs)(S.U.)(µS/cm)(deg. C)(NTUs)(mg/L)(mVs)(S.U.)(µS/cm)(deg. C)(NTUs)(mg/L)(mVs) 2601-MSWLF-1997 MW-E ------------------------------------ 2601-MSWLF-1997 MW-E Rep 5.55 372 20.5 9 2.68 187.1 4.93 344 16.7 48 3.63 118.5 6.08 353 19.5 184 2.44 170.4 2601-MSWLF-1997 MW-F 5.73 361 21.8 7 0.41 46.2 5.61 366 20.0 19 0.39 71.8 5.87 372 20.9 31 0.48 77.4 2601-MSWLF-1997 TW-1 ------------------------------------ 2601-MSWLF-1997 MW-I 5.53 162 20.7 26 0.75 62.9 5.22 155 18.3 80 0.81 132.8 5.72 125 15.5 58 3.25 198.7 2601-MSWLF-1997 MW-J 5.44 208 21.7 4 0.54 77.6 5.42 249 19.0 93 0.51 139.4 5.62 218 20.0 84 0.46 115.9 2601-MSWLF-1997 SW-4 6.83 736 20.1 44 4.11 155.2 6.93 1,106 24.7 49 3.91 122.4 7.22 1,459 13.2 22 8.31 107.2 2601-MSWLF-1997 SW-5 6.94 1,155 23.9 55 4.08 17.1 7.14 1,715 23.2 72 3.61 85.5 6.61 2,535 13.9 37 5.08 122.6 2601-MSWLF-1997 SW-6 7.09 612 20.8 22 4.29 28.2 6.56 445 21.7 58 3.26 30.9 7.11 589 13.9 31 7.38 111.8 Notes: 1. (--) Not Sampled 2. TW-1 was abandoned in May 2000 for the Subtitle D landfill expansion. 3. Background well MW-E was replaced with MW-E Rep on November 11, 2004. 4. SW-6 was added as part of the Corrective Action Plan and first sampled during the Spring 2010 event. 5. ORP - Oxidation-Reduction Potential (mVs - millivolts) 6. DO - Dissolved Oxygen (mg/L - milligrams per liter) 7. NTUs - Nephelometric Turbidity Units 8. µS/cm - Microsiemens per centimeter 9. Temp. - Temperature/deg. C - degrees Celsius 10. S.U. - Standard Units No. 35 11/12/2013 No. 32 3/6/2012 No. 34No. 33 9/26/2012 No. 31 9/27/2011 Surface Water Location Event: Sampling Date: No. 30 3/28/2011 Event: Sampling Date:6/5/2013 Facility Permit Number Monitoring Well Code Facility Permit Number Monitoring Well Code Surface Water Location Page 1 of 2 January 2017 Table 4 Water Quality Parameters August 2016 Semi-Annual Sampling Event Cumberland County Subtitle D Landfill Facility Permit Number 2601-MSWLF-1997 pH Conductivity Temp.Turb.DO ORP pH Conductivity Temp.Turb.DO ORP pH Conductivity Temp.Turb.DO ORP (S.U.)(µS/cm)(deg. C)(NTUs)(mg/L)(mVs)(S.U.)(µS/cm)(deg. C)(NTUs)(mg/L)(mVs)(S.U.)(µS/cm)(deg. C)(NTUs)(mg/L)(mVs) 2601-MSWLF-1997 MW-E ------------------------------------ 2601-MSWLF-1997 MW-E Rep 6.39 412 14.8 348 6.51 116.7 5.99 351 19.7 49 4.98 54.7 5.72 295 16.2 28 3.95 44.5 2601-MSWLF-1997 MW-F 5.81 384 19.0 85 1.42 54.9 5.75 434 20.8 29 0.53 76.1 5.66 373 20.7 46 0.56 -63.6 2601-MSWLF-1997 TW-1 ------------------------------------ 2601-MSWLF-1997 MW-I 5.32 118 17.7 55 4.99 140.1 5.58 145 20.3 84 1.28 139.4 5.17 121 19.2 39 3.12 -45.2 2601-MSWLF-1997 MW-J 5.38 218 18.0 125 1.21 135.8 5.54 216 20.5 52 0.36 153.9 5.14 196 19.4 109 0.39 54.8 2601-MSWLF-1997 SW-4 7.38 681 24.1 44 6.41 18.7 7.69 1,995 17.8 28 8.63 49.2 7.39 1,205 29.1 26 6.39 30.2 2601-MSWLF-1997 SW-5 6.54 806 20.1 40 8.83 -68.7 6.71 1,749 16.0 51 1.63 -71.2 6.31 711 23.1 108 4.56 -73.4 2601-MSWLF-1997 SW-6 6.89 517 17.6 35 6.91 10.2 6.81 516 15.7 12 4.09 -1.1 6.77 475 21.0 41 4.72 2.7 pH Conductivity Temp.Turb.DO ORP pH Conductivity Temp.Turb.DO ORP pH Conductivity Temp.Turb.DO ORP (S.U.)(µS/cm)(deg. C)(NTUs)(mg/L)(mVs)(S.U.)(µS/cm)(deg. C)(NTUs)(mg/L)(mVs)(S.U.)(µS/cm)(deg. C)(NTUs)(mg/L)(mVs) 2601-MSWLF-1997 MW-E ------------------------------------ 2601-MSWLF-1997 MW-E Rep 5.74 294 19.4 47 3.77 -9.8 5.88 298 15.9 48 4.08 91.6 5.56 289 20.4 22 3.62 127.9 2601-MSWLF-1997 MW-F 5.63 479 21.2 58 0.42 -2.6 5.75 438 19.8 30 0.65 5.1 5.27 389 21.4 38 1.39 67.0 2601-MSWLF-1997 TW-1 ------------------------------------ 2601-MSWLF-1997 MW-I 5.23 105 19.9 96 1.90 1.2 5.54 131 18.8 76 1.80 50.8 5.16 115 21.4 37 10.79 160.6 2601-MSWLF-1997 MW-J 5.27 176 20.2 97 0.27 -11.9 5.51 204 19.2 89 0.41 30.3 5.25 174 21.2 736 1.77 137.3 2601-MSWLF-1997 SW-4 7.04 636 18.5 77 5.61 19.6 6.70 1,543 18.2 76 6.77 -88.6 7.90 802 26.7 75 10.5 12.2 2601-MSWLF-1997 SW-5 6.53 780 16.0 65 2.80 -52.9 7.10 966 19.1 107 2.54 -136.3 6.61 1,211 23.2 205 3.49 -83.5 2601-MSWLF-1997 SW-6 6.62 676 16.6 250 4.15 -20.4 7.13 1,093 21.9 124 4.01 -121.0 6.76 1,281 23.7 251 1.84 -98.4 Notes: 1. (--) Not Sampled 2. TW-1 was abandoned in May 2000 for the Subtitle D landfill expansion. 3. Background well MW-E was replaced with MW-E Rep on November 11, 2004. 4. SW-6 was added as part of the Corrective Action Plan and first sampled during the Spring 2010 event. 5. ORP - Oxidation-Reduction Potential (mVs - millivolts) 6. DO - Dissolved Oxygen (mg/L - milligrams per liter) 7. NTUs - Nephelometric Turbidity Units 8. µS/cm - Microsiemens per centimeter 9. Temp. - Temperature/deg. C - degrees Celsius 10. S.U. - Standard Units 5/27/2015 No. 38 No. 39 11/10/2015 No. 41 8/25/2016 Event:No. 37 Sampling Date:11/5/2014 Surface Water Location Event:No. 40 Sampling Date:3/15/2016 No. 36 4/22/2014 Surface Water Location Facility Permit Number Monitoring Well Code Facility Permit Number Monitoring Well Code Page 2 of 2 January 2017 Table 5a Detected Groundwater Constituents - Metals and Volatile Organic Compounds August 2016 Semi-Annual Sampling Event Cumberland County Subtitle D Landfill Facility Permit Number 2601-MSWLF-1997 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 Nic k e l Se l e n i u m Si l v e r Th a l l i u m Va n a d i u m Zin c Ac e t o n e Be n z e n e Ca r b o n D i s u l f i d e Ch l o r o b e n z e n e Ch l o r o m e t h a n e Me t h y l e n e C h l o r i d e To l u e n e 0.001*0.01 0.7 0.004*0.002 0.01 0.001*1 0.015 0.1 0.02 0.02 0.0002*0.0003*1 6,000 1 700 50 3 5 600 0.006 0.01 0.1 0.001 0.001 0.01 0.01 0.01 0.01 0.05 0.01 0.01 0.0055 0.025 0.01 100 1 100 3 1 1 1 2601-MSWLF-1997 MW-E 21-Nov-97 0.016 2601-MSWLF-1997 MW-E 25-Mar-98 0.012 0.021 2601-MSWLF-1997 MW-E dup 25-Mar-98 0.017 0.026 2601-MSWLF-1997 MW-E 16-Apr-98 0.014 0.023 0.12 2601-MSWLF-1997 MW-E 9-Jun-98 0.016 0.0039 0.026 6.0 2601-MSWLF-1997 MW-E 10-Dec-98 0.57 0.0041 0.011 2601-MSWLF-1997 MW-E 8-Apr-99 0.0176 0.0026 0.0275 7.0 2601-MSWLF-1997 MW-E 20-Oct-99 0.0104 0.503 0.0132 6.0 2601-MSWLF-1997 MW-E 21-Mar-00 0.0214 0.0048 0.0426 14.0 2601-MSWLF-1997 MW-E 19-Sep-00 0.0156 0.0015 0.0174 9.0 2601-MSWLF-1997 MW-E 24-Apr-01 0.0207 0.0018 0.0343 14.0 2601-MSWLF-1997 MW-E 1-Nov-01 0.0121 0.0018 0.0161 9.0 2601-MSWLF-1997 MW-E 13-Mar-02 0.0118 0.0012 0.0373 14.0 2601-MSWLF-1997 MW-E 5-Dec-02 0.0172 0.0022 0.0182 8.0 2601-MSWLF-1997 MW-E 3-Apr-03 0.0245 0.0022 0.0347 16.0 2601-MSWLF-1997 MW-E 28-Oct-03 0.0159 0.578 0.0200 12.0 2601-MSWLF-1997 MW-E 8-Mar-04 0.0134 0.0321 13.7 2601-MSWLF-1997 MW-E Rep 29-Mar-11 0.103 0.000759J 0.00231J 0.00263J 0.00234J 0.00254J 0.000929J 0.00749J 0.0117 2601-MSWLF-1997 MW-E Rep 28-Sep-11 0.131 0.000278J 0.00129J 0.00188J 0.00302J 0.0070J 2601-MSWLF-1997 MW-E Rep 7-Mar-12 0.000232J 0.126 0.000124J 0.00185J 2601-MSWLF-1997 MW-E Rep 27-Sep-12 0.0731J 0.000130J 0.00117J 0.00191J 0.00489J 2601-MSWLF-1997 MW-E Rep 6-Jun-13 0.0828J 0.000328J 0.00214J 0.00251JB 0.00366J 0.00987J 2601-MSWLF-1997 MW-E Rep 13-Nov-13 0.0849J 0.000778J 0.00331J 0.00231J 0.00257J 0.0105J 0.00896J 2601-MSWLF-1997 MW-E Rep 23-Apr-14 0.139 0.00268 0.00894J 0.00376J 0.00857J 0.00695J 0.00493J 0.0317 0.0239 2601-MSWLF-1997 MW-E Rep 6-Nov-14 0.0789J 0.00102 0.00405J 0.00208J 0.00314J 0.0113J 0.0147 2601-MSWLF-1997 MW-E Rep 27-May-15 0.0671J 0.000371J 0.011J 0.004J 2601-MSWLF-1997 MW-E Rep 10-Nov-15 0.0564J 0.000373J 0.00297J 2601-MSWLF-1997 MW-E Rep 15-Mar-16 0.0570J 0.00189J 2601-MSWLF-1997 MW-E Rep 25-Aug-16 0.0571J 0.000361J 0.00150J 0.00240J 0.00507J 2601-MSWLF-1997 MW-E Rep (dissolved)25-Aug-16 0.0451J 0.00794J 2601-MSWLF-1997 MW-F 28-Mar-11 0.00631J 0.127 0.00221J 0.0157 0.00263J 0.00776J 2601-MSWLF-1997 MW-F (dup)28-Mar-11 0.129 0.00204J 0.0157 0.00239J 0.00958J 2601-MSWLF-1997 MW-F 27-Sep-11 0.128 0.00226J 0.0174 0.00281J 0.000948J 0.00638J 2601-MSWLF-1997 MW-F 6-Mar-12 0.124 0.00265J 0.0159 0.00351J 0.0025J 2601-MSWLF-1997 MW-F (dup)6-Mar-12 0.127 0.0026J 0.0161 0.00384J 0.00308J 0.00424J 2601-MSWLF-1997 MW-F 26-Sep-12 0.157 0.000160J 0.00229J 0.017 0.00317J 0.00335J 0.00169J 0.0182J 2601-MSWLF-1997 MW-F 5-Jun-13 0.117 0.0161 0.0021J 0.00331J 0.00465JB 0.00866J 2601-MSWLF-1997 MW-F 12-Nov-13 0.128 0.00173J 0.0185 0.00242J 0.00660J 2601-MSWLF-1997 MW-F (dup)12-Nov-13 0.125 0.00155J 0.0181 0.00255J 0.00739J 2601-MSWLF-1997 MW-F 22-Apr-14 0.150 0.000593J 0.00461J 0.0243 0.0206 0.0128 0.00532J 0.00478J 0.0566 2601-MSWLF-1997 MW-F 5-Nov-14 0.160 0.00382J 0.0299 0.00447J 0.0122 2601-MSWLF-1997 MW-F (dup) 5-Nov-14 0.151 0.00011J 0.00248J 0.0285 0.00363J 0.0105 2601-MSWLF-1997 MW-F 27-May-15 0.119 0.000128J 0.0193 0.00366J 0.00874J 2601-MSWLF-1997 MW-F 10-Nov-15 0.128 0.000208J 0.0184 0.00443J 0.00238J 0.00504J 2601-MSWLF-1997 MW-F 15-Mar-16 0.000234J 0.0726J 0.0186 0.00210J 0.00320J 0.0136 2601-MSWLF-1997 MW-F 25-Aug-16 0.0845J 0.0227 0.00187J 0.00356J 0.000111J 0.0110 2601-MSWLF-1997 MW-F (dup)25-Aug-16 0.0874J 0.000206J 0.0244 0.00634J 0.00365J 0.000128J 0.00255J 0.0185 2601-MSWLF-1997 MW-F (dissolved)25-Aug-16 0.000438J 0.0806J 0.0196 0.00347J 0.000121J 0.00852J 2601-MSWLF-1997 MW-F (dup) (dissolved)25-Aug-16 0.0777J 0.0190 0.00231J 0.000119J 0.0675 Volatile Organic Compounds North Carolina 2L or Groundwater Protection Standard Solid Waste Section Limit Metals Sample Date Monitoring Well Code Facility Permit Number Page 1 of 4 January 2017 Table 5a Detected Groundwater Constituents - Metals and Volatile Organic Compounds August 2016 Semi-Annual Sampling Event Cumberland County Subtitle D Landfill Facility Permit Number 2601-MSWLF-1997 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 Nic k e l Se l e n i u m Si l v e r Th a l l i u m Va n a d i u m Zin c Ac e t o n e Be n z e n e Ca r b o n D i s u l f i d e Ch l o r o b e n z e n e Ch l o r o m e t h a n e Me t h y l e n e C h l o r i d e To l u e n e 0.001*0.01 0.7 0.004*0.002 0.01 0.001*1 0.015 0.1 0.02 0.02 0.0002*0.0003*1 6,000 1 700 50 3 5 600 0.006 0.01 0.1 0.001 0.001 0.01 0.01 0.01 0.01 0.05 0.01 0.01 0.0055 0.025 0.01 100 1 100 3 1 1 1 Volatile Organic Compounds North Carolina 2L or Groundwater Protection Standard Solid Waste Section Limit Metals Sample Date Monitoring Well Code Facility Permit Number 2601-MSWLF-1997 MW-I 28-Mar-11 0.116 0.000103J 0.00155J 0.00330J 0.00450J 2601-MSWLF-1997 MW-I 27-Sep-11 0.176 0.00577J 0.00301J 0.00613J 2601-MSWLF-1997 MW-I 6-Mar-12 0.000307J 0.198 0.00177J 0.00148J 0.00245J 0.00312J 0.00267J 2601-MSWLF-1997 MW-I 26-Sep-12 0.00324J 0.194 0.00273J 0.00152J 0.00196J 0.011J 2601-MSWLF-1997 MW-I (dup)26-Sep-12 0.192 0.00258J 0.00166J 0.00193J 0.109J 2601-MSWLF-1997 MW-I 5-Jun-13 0.193 0.00217J 0.00286JB 0.00622J 0.00447J 2601-MSWLF-1997 MW-I 12-Nov-13 0.145 0.000486J 0.0186 0.00267J 0.00819J 0.00222J 0.00284J 0.0403 0.0107 2601-MSWLF-1997 MW-I 22-Apr-14 0.121 0.000578J 0.0206 0.00271J 0.00951J 0.00335J 0.00407J 0.0423 0.0106 2601-MSWLF-1997 MW-I 5-Nov-14 0.106 0.000365J 0.00991J 0.00418J 0.00507J 0.0223J 0.0106 2601-MSWLF-1997 MW-I 27-May-15 0.100 0.000210J 0.00171J 0.00136J 0.00485J 0.0116J 0.00589J 2601-MSWLF-1997 MW-I (dup)27-May-15 0.0976J 0.000205J 0.00140J 0.00170J 0.00457J 0.0114J 0.00744J 2601-MSWLF-1997 MW-I 10-Nov-15 0.0968J 0.000330J 0.00663J 0.00388J 0.00302J 0.00393J 0.0203J 0.00495J 2601-MSWLF-1997 MW-I 15-Mar-16 0.0922J 0.000209J 0.00700J 0.00807J 0.00564J 0.0204J 0.0174 2601-MSWLF-1997 MW-I (dup)15-Mar-16 0.0901J 0.000167J 0.00623J 0.00601J 0.00510J 0.0186J 0.00765J 2601-MSWLF-1997 MW-I 25-Aug-16 0.0939J 0.00267J 0.00135J 0.00370J 0.00934J 0.00578J 2601-MSWLF-1997 MW-I (dissolved)25-Aug-16 0.0805J 0.00235J 0.00866J 2601-MSWLF-1997 MW-J 28-Mar-11 0.00427J 0.170 0.00782J 0.00724J 2601-MSWLF-1997 MW-J 27-Sep-11 0.00316J 0.184 0.00808J 0.00211J 0.00252J 0.00708J 2601-MSWLF-1997 MW-J (dup)27-Sep-11 0.00338J 0.183 0.00877J 0.00249J 0.00745J 2601-MSWLF-1997 MW-J 6-Mar-12 0.000756J 0.185 0.00866J 0.00313J 0.00654J 2601-MSWLF-1997 MW-J 26-Sep-12 0.00581J 0.203 0.00121 0.0154 0.00972J 0.00713J 0.00606J 0.00928J 0.045 0.0381 2601-MSWLF-1997 MW-J 5-Jun-13 0.00869J 0.266 0.00136 0.0215 0.0127 0.0101 0.00589J 0.0108J 0.0466 0.0394 2601-MSWLF-1997 MW-J (dup)5-Jun-13 0.00873J 0.263 0.00133 0.0193 0.0128 0.00955J 0.00558J 0.0106J 0.0455 0.0372 2601-MSWLF-1997 MW-J 12-Nov-13 0.0143 0.312 0.00290 0.0373 0.0193 0.0229 0.0142 0.0155J 0.00290J 0.0893 0.0690 2601-MSWLF-1997 MW-J 22-Apr-14 0.00873J 0.245 0.00121 0.0154 0.0118 0.00861J 0.00617J 0.00851J 0.0365 0.0278 2601-MSWLF-1997 MW-J (dup)22-Apr-14 0.267 0.00167 0.0220 0.0147 0.0118 0.00845J 0.0108J 0.0514 0.0372 2601-MSWLF-1997 MW-J 5-Nov-14 0.198 0.000261J 0.00349J 0.00777J 0.00279J 0.00737J 0.0141 2601-MSWLF-1997 MW-J 27-May-15 0.213 0.000541J 0.00478J 0.00553J 0.00312J 0.00430J 0.0118J 0.0151 2601-MSWLF-1997 MW-J 10-Nov-15 0.215 0.00159 0.0171 0.0114 0.00829J 0.00787J 0.00859J 0.0447 0.0333 2601-MSWLF-1997 MW-J (dup)10-Nov-15 0.214 0.00145 0.0171 0.0109 0.00766J 0.00873J 0.00939J 0.0431 0.0327 2601-MSWLF-1997 MW-J 15-Mar-16 0.210 0.000756J 0.0114 0.0106 0.00574J 0.00639J 0.0253 0.0302 2601-MSWLF-1997 MW-J 26-Aug-16 0.0249 0.409 0.00427 0.0390 0.0285 0.0338 0.0155 0.0249J 0.119 0.0803 2601-MSWLF-1997 MW-J (dissolved)26-Aug-16 0.177 0.00910J 0.00224J 0.0102 2601-MSWLF-1997 TW-1 21-Nov-97 2601-MSWLF-1997 TW-1 dup 21-Nov-97 2601-MSWLF-1997 TW-1 25-Mar-98 2601-MSWLF-1997 TW-1 16-Apr-98 2601-MSWLF-1997 TW-1 9-Jun-98 0.0012 0.011 2601-MSWLF-1997 TW-1 10-Dec-98 0.0017 2601-MSWLF-1997 TW-1 8-Apr-99 2601-MSWLF-1997 TW-1 20-Oct-99 2601-MSWLF-1997 TW-1 21-Mar-00 Notes: 1. All units for metals are in milligrams per liter (parts per million). All units for volatile organic compounds are in micrograms per liter (parts per billion). 2. * - Groundwater Protection Standard 3. Background well MW-E was replaced with MW-E Rep on November 11, 2004. 4. J - Indicates the analytical result is an estimated concentration between the method detection limit and the Solid Waste Section Reporting Limit. 5. B - The analyte was also detected in the associated method blank. - Indicates the result is below the laboratory method detection limit. - Concentration exceeds the 15A NCAC 02L.0202 (North Carolina 2L) or Groundwater Protection Standard. Page 2 of 4 January 2017 Table 5b Detected Surface Water Constituents - Metals and Volatile Organic Compounds August 2016 Semi-Annual Sampling Event Cumberland County Subtitle D Landfill Facility Permit Number 2601-MSWLF-1997 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 Ni c k e l Se l e n i u m Si l v e r Th a l l i u m Va n a d i u m Zi n c Ac e t o n e Be n z e n e Ch l o r o b e n z e n e 1, 4 - D i c h l o r o b e n z e n e To l u e n e 0.64*0.01 200*0.0065 0.00015 0.024 0.004*0.0027 0.00054 0.016 0.005 0.00006 0.00047*NS 0.036 2,000 51*140 100 11 0.006 0.01 0.1 0.001 0.001 0.01 0.01 0.01 0.01 0.05 0.01 0.01 0.0055 0.025 0.01 100 1 3 1 1 2601-MSWLF-1997 TSW-1 20-Nov-97 0.014 0.36 2601-MSWLF-1997 TSW-1 16-Apr-98 0.056 2601-MSWLF-1997 TSW-1 21-Mar-00 0.434 2601-MSWLF-1997 SW-4 28-Mar-11 0.000365J 0.0102 0.273 0.00397J 0.00430J 0.00171J 0.00980J 0.00353J 0.00409J 0.00494J 7.9J 2601-MSWLF-1997 SW-4 27-Sep-11 0.108 0.000247J 0.00370J 0.00193J 0.00626J 0.00660J 0.00492J 0.00110J 0.00850J 0.0251 12J 2601-MSWLF-1997 SW-4 6-Mar-12 0.00145J 0.181 0.000270J 0.00444J 0.00370J 0.00592J 0.00393J 0.00672J 0.00118J 0.00860J 0.0159 13J 2601-MSWLF-1997 SW-4 26-Sep-12 0.00114J 0.200 0.00277J 0.00192J 0.00582J 0.00118J 0.00350J 0.00395J 4.1J 2601-MSWLF-1997 SW-4 5-Jun-13 0.00802J 0.305 0.00587J 0.00335J 0.00376J 0.0101J 0.00107J 0.00271JB 0.011J 0.0163 12J 2601-MSWLF-1997 SW-4 12-Nov-13 0.294 0.00984J 0.00477J 0.0101J 0.00624J 0.0132 2601-MSWLF-1997 SW-4 22-Apr-14 0.00680J 0.208 0.00455J 0.00250J 0.00450JB 0.00584J 0.00722J 0.00626J 0.00976J 29J 2601-MSWLF-1997 SW-4 5-Nov-14 0.378 0.00998J 0.00459J 0.00887J 0.00168J 0.01 14J 2601-MSWLF-1997 SW-4 27-May-15 0.000317J 0.374 0.00388J 0.00371J 0.00747J 0.00480J 2601-MSWLF-1997 SW-4 12-Nov-15 0.000258J 0.164 0.000194J 0.00394J 0.00329J 0.00298J 0.00796J 0.00678J 0.00570J 0.0150 9.1J 2601-MSWLF-1997 SW-4 15-Mar-16 0.000581J 0.326 0.00397J 0.00522J 0.00733J 0.00205J 3.0J 0.54J 2601-MSWLF-1997 SW-4 26-Aug-16 0.000254J 0.0662J 0.00311J 0.00301J 0.00315J 0.00969J 0.00337J 0.00567J 2601-MSWLF-1997 SW-5 29-Mar-11 0.00299J 0.457 0.00218J 0.00384J 0.0144J 0.00320J 0.00596J 8.8J 1.3J 2601-MSWLF-1997 SW-5 28-Sep-11 0.00291J 0.634 0.00425J 0.00760J 0.00447J 0.0251J 0.00389J 0.00147J 0.0167 7.1J 2601-MSWLF-1997 SW-5 7-Mar-12 0.000313J 0.344 0.00207J 0.00426J 0.0109J 0.00602J 14J 2601-MSWLF-1997 SW-5 27-Sep-12 0.000282J 0.239 0.00193J 0.00337J 0.0102J 0.00143J 0.00185J 15J 2601-MSWLF-1997 SW-5 5-Jun-13 0.705 0.00393J 0.0048J 0.0202J 0.00211JB 0.00147J 0.00487J 13J 0.54J 2601-MSWLF-1997 SW-5 12-Nov-13 0.818 0.00822J 0.0103 0.0376J 0.00676J 6.0J 0.53J 2601-MSWLF-1997 SW-5 22-Apr-14 0.214 0.00290J 0.00279J 0.00560J 10J 0.77J 2601-MSWLF-1997 SW-5 5-Nov-14 0.471 0.00718J 0.00413J 0.00767J 0.00168J 0.00658J 9.8J 1.6J 2601-MSWLF-1997 SW-5 27-May-15 0.31 0.00207J 0.00485J 0.42J 2601-MSWLF-1997 SW-5 12-Nov-15 0.258 0.00421J 0.00521J 0.00678J 0.00186J 11J 2601-MSWLF-1997 SW-5 16-Mar-16 0.000345J 0.217 0.00396J 0.00863J 0.00148J 3.4J 0.66J 0.89J 2601-MSWLF-1997 SW-5 26-Aug-16 0.542 0.00415J 0.00497J 0.00174J 0.0104J 0.00394J 0.0137 2.0J 0.77J North Carolina 2B Freshwater Aquatic Life or Human Health Standard Volatile Organic CompoundsMetals Solid Waste Section Limit Sample Date Surface Water Sample Location Facility Permit Number Page 3 of 4 January 2017 Table 5b Detected Surface Water Constituents - Metals and Volatile Organic Compounds August 2016 Semi-Annual Sampling Event Cumberland County Subtitle D Landfill Facility Permit Number 2601-MSWLF-1997 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 Ni c k e l Se l e n i u m Si l v e r Th a l l i u m Va n a d i u m Zi n c Ac e t o n e Be n z e n e Ch l o r o b e n z e n e 1, 4 - D i c h l o r o b e n z e n e To l u e n e 0.64*0.01 200*0.0065 0.00015 0.024 0.004*0.0027 0.00054 0.016 0.005 0.00006 0.00047*NS 0.036 2,000 51*140 100 11 0.006 0.01 0.1 0.001 0.001 0.01 0.01 0.01 0.01 0.05 0.01 0.01 0.0055 0.025 0.01 100 1 3 1 1 North Carolina 2B Freshwater Aquatic Life or Human Health Standard Volatile Organic CompoundsMetals Solid Waste Section Limit Sample Date Surface Water Sample Location Facility Permit Number 2601-MSWLF-1997 SW-6 29-Mar-11 0.226 0.00239J 0.00592J 0.00177J 2601-MSWLF-1997 SW-6 28-Sep-11 0.167 0.00217J 0.00407J 0.00122J 0.00466J 2601-MSWLF-1997 SW-6 7-Mar-12 0.171 0.00158J 0.00480J 0.00401J 4.4J 2601-MSWLF-1997 SW-6 27-Sep-12 0.411 0.000108J 0.00160J 0.0135 0.00575J 0.00295J 0.0385 3.5J 2601-MSWLF-1997 SW-6 5-Jun-13 0.251 0.00405J 0.00357J 0.00284JB 2601-MSWLF-1997 SW-6 12-Nov-13 0.326 0.0130 0.00459J 0.00173J 0.0103 2601-MSWLF-1997 SW-6 22-Apr-14 0.299 0.00378J 0.00215JB 0.00288J 0.00562J 2601-MSWLF-1997 SW-6 5-Nov-14 0.262 0.0282J 0.00194J 0.00408J 0.0047J 2601-MSWLF-1997 SW-6 27-May-15 0.336 0.00551J 0.00638J 2601-MSWLF-1997 SW-6 12-Nov-15 0.233 0.000120J 0.00349J 0.00680J 0.00153J 0.00602J 11J 0.45J 2601-MSWLF-1997 SW-6 16-Mar-16 0.000324J 0.264 0.00179J 0.00502J 0.0120J 6.0J 0.42J 2601-MSWLF-1997 SW-6 26-Aug-16 0.000700J 0.546 0.00345J 0.00581J 0.00162J 0.0114J 0.00308J 0.0211 11J 1.8J 0.70J 0.64J Notes: 1. All units for metals are in milligrams per liter (parts per million). All units for volatile organic compounds are in micrograms per liter (parts per billion). 2. Standards obtained from 15A NCAC 02B (North Carolina 2B) Surface Water Standards for Class C Waters or are National Criteria per the U.S. Environmental Protection Agency (June 2016). 3. NS - No Standard 4. * - Human Health Standard 5. J - Indicates the analytical result is an estimated concentration between the method detection limit and the Solid Waste Section Reporting Limit. 6. B - The analyte was also detected in the associated method blank. 7. SW-6 was added to the monitoring program in May 2010 as part of the Corrective Action Plan. - Concentration exceeds the North Carolina 2B Freshwater Aquaitic Life or Human Health Standard for Class C waters. - Indicates the result is below the laboratory method detection limit. Page 4 of 4 January 2017 Table 6 Constituents Exceeding Groundwater Standards August 2016 Semi-Annual Sampling Event Cumberland County Subtitle D Landfill Facility Permit Number 2601-MSWLF-1997 PARAMETERS EXCEEDING THE NORTH CAROLINA 2L OR GROUNDWATER PROTECTION STANDARD AUGUST 2016 SAMPLING EVENT 2601-MSWLF-1997 MW-E Rep Vanadium* 2601-MSWLF-1997 MW-F Cobalt* 2601-MSWLF-1997 MW-I Cobalt*, Vanadium* 2601-MSWLF-1997 MW-J Arsenic, Beryllium*, Chromium, Cobalt*, Lead, Vanadium* Notes: 1. (*) - Groundwater Protection Standard 2. Bold - Estimated concentration (i.e. "J" flag exceedance) 3. Background well MW-E was replaced with MW-E Rep on November 11, 2004. MONITORING WELL CODE FACILITY PERMIT NUMBER Page 1 of 1 January 2017         Appendix A  cdmsmith.com