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6401_NashCoMSWLF_GWMR_20170517
11112 BRANDING IRON PLACE, WENDELL, NC 27591 919-366-3663 Office ● 919-995-0363 Cell ● bboutinpg@bellsouth.net May 17, 2017 Ms. Jaclynne Drummond North Carolina Department of Environmental Quality Division of Waste Management Solid Waste Section P. O. Box 27687 Raleigh, NC 27611-7687 RE: Report of Results Appendix II Assessment Monitoring: May 2017 Nash County Municipal Solid Waste Landfill (Closed) Nashville, Nash County, NC Permit # 64-01 Dear Ms. Drummond: This report presents the results of Appendix II assessment monitoring conducted at the landfill site referenced above (Figure 1) in May 2017 in accordance with North Carolina Solid Waste Management Rule 15A NCAC 13B .1634 (Rule .1634). The assessment monitoring was a continuation of monitoring initiated in May 2007 during which four Appendix I constituents (methylene chloride, trichloroethene, tetrachloroethene and vinyl chloride) were detected in groundwater at the site at concentrations in excess of the 15A NCAC 2L .0202 Class GA groundwater quality standards (2L standards). In a letter dated February 17, 2015 to Nash County, the NCDEQ granted a request by the county to reduce the frequency of monitoring groundwater for pesticides, fluoride, and phenol based on a lack of detection of these constituents in groundwater since 2010. The NCDEQ granted a reduction in the monitoring frequency for pesticides, fluoride, and phenol from semiannual to every five years. The scope of work performed during May 2017 included sampling and laboratory analysis of groundwater from 10 groundwater monitoring wells and surface water samples from two surface water sampling locations. The groundwater and surface water samples were collected in accordance with the NCDEQ, Division of Waste Management (DWM), Solid Waste Section (SWS) Groundwater Monitoring Guidance Document and the facility Water Quality Monitoring Plan. The groundwater and surface – 2 – May 17, 2017 11112 BRANDING IRON PLACE, WENDELL, NC 27591 919-366-3663 Office ● 919-995-0363 Cell ● bboutinpg@bellsouth.net water sampling and data collection methods, as well as the results of field and laboratory testing of the groundwater and surface water samples, are presented in the following sections. 1.0 GROUNDWATER GAUGING AND WATER SAMPLE COLLECTION Groundwater levels were gauged in the site monitoring wells on May 2, 2017 as part of assessment monitoring. Depths to groundwater were measured using an electronic water-level meter that was thoroughly decontaminated between wells with a non- phosphate soap and water wash followed in order by multiple rinses with distilled water, an isopropyl alcohol rinse, and multiple distilled water rinses. Depth-to-water measurements were made after the wells were opened for sufficient periods of time to allow water levels to equilibrate with atmospheric pressure. The locations of the site monitoring wells are depicted in Figure 2. Groundwater elevation data collected at the monitoring wells on May 2, 2017 are presented in Table 1. Groundwater and surface water samples were collected for laboratory analysis on May 2 and 3, 2017 to monitor water quality at the site. The samples were analyzed for Appendix I volatile organic compounds (VOCs) by SW 846 Method 8260B, and Appendix I metals plus mercury by the EPA 6000/7000 Series Methods. The groundwater and surface water samples were collected and handled in accordance with the sampling protocols included in the site Water Quality Monitoring Plan as well as the SWS Groundwater Monitoring Guidance Document. It is noted that monitoring well MW-1 serves as the upgradient, natural background well for the facility, and monitoring wells MW-2R through MW-6, MW-7s, MW-7d, MW-8s and MW-8d serve as the downgradient monitoring wells. It is further noted that MW-6, MW-7d and MW-8d are deep Type III groundwater monitoring wells that monitor the deeper zone of the shallow aquifer at the site. All reusable sampling equipment was properly decontaminated between sampling locations with a non-phosphate soap and water wash, followed by multiple rinses with distilled water. New disposable nitrile or latex gloves were worn during all sampling activities. Disposable sampling equipment/material was discarded after each use. Prior to groundwater sampling, all monitoring wells were purged of stagnant water using pre-cleaned Teflon-lined disposable polyethylene tubing connected to a peristaltic pump under low flow (≤ 200 ml/min) conditions. During purging, measurements were made in – 3 – May 17, 2017 11112 BRANDING IRON PLACE, WENDELL, NC 27591 919-366-3663 Office ● 919-995-0363 Cell ● bboutinpg@bellsouth.net the field of the pH, temperature, specific conductance and turbidity of the groundwater collected from the monitoring wells, in accordance with SWS requirements. The results of the field analyses for these parameters are presented in Table 1. Copies of Groundwater Sampling Forms containing pertinent information recorded in the field during purging and sampling at each groundwater monitoring well are presented in Appendix A. The results of the field-measured water-quality parameters indicate that the values measured in groundwater collected from the site monitoring wells were generally within applicable stabilization criteria (see Groundwater Sampling Forms), except for slightly elevated turbidity at monitoring wells MW-3 and MW-7s. Groundwater at the site is slightly acidic based on the pH values measured in the field (4.77 to 6.05). Specific conductance values ranged from 40 (MW-1) to 171 (MW-3) µS/cm in groundwater at the monitoring wells. Turbidity values ranged from 1.0 (MW-2R) to 40.4 (MW-7s) NTUs. After field parameters had stabilized over three consecutive recording intervals, groundwater samples were collected using the same tubing that was used to purge the well. The samples were pumped directly into laboratory prepared containers, which were then placed into ice-filled coolers and shipped under proper chain-of-custody to Prism Laboratories, Inc. (Prism) for analysis. Surface water samples were collected from sampling locations SW-1 and SW-2 (Figure 2). SW-1 is located approximately 50-feet east of the MSW Landfill along a tributary of Pig Basket Creek. SW-2 is located down gradient and due south of the MSW Landfill along the same tributary of Pig Basket Creek. New disposable nitrile or latex gloves were worn during all sampling activities. All surface water samples were collected in accordance with the protocol presented in the SWS Groundwater Monitoring Guidance Document. Following collection, the samples were placed into ice-filled coolers and shipped under proper chain-of-custody to Prism for analysis. 2.0 RESULTS OF GROUNDWATER AND SURFACE WATER SAMPLING AND ANALYSIS Groundwater flow direction, average hydraulic gradient, and average interstitial flow velocity were derived from water-level measurements recorded during the sampling event. A water-table elevation contour map derived from the groundwater elevation measurements recorded on May 2, 2017 is presented as Figure 3. The water-table elevation contours in Figure 3 indicate that the direction of shallow groundwater flow is generally to the southwest with an average hydraulic gradient of approximately 0.014 – 4 – May 17, 2017 11112 BRANDING IRON PLACE, WENDELL, NC 27591 919-366-3663 Office ● 919-995-0363 Cell ● bboutinpg@bellsouth.net ft./ft. This is consistent with the general flow direction observed during previous monitoring events. The hydraulic gradient in the vicinity of each well was derived by dividing the elevation difference between water table elevations measured at the monitoring wells and proximal water-table elevation contour lines, by the perpendicular horizontal distance between the wells and contours (Figure 3 and Table 2). Results of in-situ slug testing performed by others between February 4, 1999 and October 1, 1999, as well as the results of slug tests conducted in November 2007, indicate hydraulic conductivity values in the shallow surficial aquifer ranging from 6.0 x 10-5 cm/s to 1.3 x 10-3 cm/s (approximately 0.17 ft/day to 3.7 ft/day). Using the horizontal hydraulic gradient measurements, the individual estimates of hydraulic conductivity, and an assumed effective porosity of 0.15, the range of average interstitial groundwater flow velocities for the shallow surficial aquifer was calculated using the following formula: vx = (K/ne) dl dh× Where: vx = average interstitial groundwater flow velocity K = hydraulic conductivity ne = effective porosity dh/dl = horizontal hydraulic gradient Average linear flow velocities are estimated to range between approximately 0.015 to 0.30 feet/day. Table 2 summarizes the data used to calculate the average interstitial groundwater flow velocity in the vicinity of each Type II monitoring well. Summarized results of laboratory analyses for groundwater and surface water samples collected from the site on May 2 and 3, 2017 are presented in Table 3. Historical results of Appendix II assessment monitoring conducted at the site since May 2007 are presented in Table 4. Copies of the original laboratory reports are included in Appendix B. The laboratory analytical results for the May 2017 sampling event indicate that benzene (1.7 ug/L), 1,1-dichloroethane (6.8 ug/L), methylene chloride (9.5 ug/L), tetrachloroethene (1.9 µg/L), and trichloroethene (4.9 ug/L) were reported at concentrations in excess of the corresponding 15A NCAC 2L groundwater quality – 5 – May 17, 2017 11112 BRANDING IRON PLACE, WENDELL, NC 27591 919-366-3663 Office ● 919-995-0363 Cell ● bboutinpg@bellsouth.net standards at monitoring well MW-2R. In addition, benzene (1.8 µg/L) was reported at a concentration in excess of the 15A NCAC 2L groundwater quality standard at monitoring well MW-6, and tetrachloroethene (0.81 µg/L) was reported at a concentration in excess of the 15A NCAC 2L groundwater quality standard at monitoring well MW-7d. Various other VOCs, including acetone, chlorobenzene, 1,4-dichlorobenzene, cis-1,2- dichloroethene, ethylbenzene, tetrahydrofuran, and total xylenes were reported in groundwater samples collected from several monitoring wells at concentrations well below the applicable 15A NCAC 2L groundwater quality standards. No VOCs were reported in surface water samples SW-1 and SW-2. The results of the metals analyses of the groundwater and surface water samples indicate that barium, chromium, copper, lead, nickel and zinc were reported in all of the samples. Cobalt was reported in 11 of the samples, cadmium was reported in nine of the samples, thallium was reported in eight of the samples, and beryllium and vanadium were reported in seven of the samples. Arsenic, mercury, selenium and silver were reported in one to five of the samples tested. Antimony was not detected in any of the samples tested. Cadmium was reported at a concentration exceeding the 15A NCAC 2L groundwater quality standard (2 µg/L) in the groundwater sample collected from monitoring well MW-4 (18 µg/L). Cobalt was reported at concentrations exceeding the Groundwater Interim Maximum Allowable Concentration (1 µg/L) effective October 1, 2010 in the groundwater samples collected from monitoring wells MW-2R (1.9 µg/L), MW-3 (92 µg/L), and MW-4 (22 µg/L). Thallium was reported at concentrations exceeding the October 1, 2010 IMAC (0.2 µg/L) in the groundwater samples collected from monitoring wells MW-7s (0.94 µg/L, estimated), MW-7d (0.57 µg/L, estimated) and MW-8d (2.2 µg/L). Vanadium was reported at an estimated concentration exceeding the October 1, 2010 IMAC (0.3 µg/L) in the groundwater samples collected from monitoring wells MW-3 (2.9 µg/L), MW-4 (3.5 µg/L), MW-7s (3.2 µg/L), MW-8s (1.7 µg/L) and MW-8d (2.0 µg/L). Inasmuch as vanadium has been historically reported at background monitoring well MW-1 at similar concentrations to those reported at monitoring wells MW-3, MW-4, MW-7s, MW-8s and MW-8d (see Table 4), it is concluded that the concentrations of vanadium measured in groundwater at the site are naturally occurring. Zinc was reported at a concentration exceeding the 15A NCAC 2L groundwater quality standard (1,000 µg/L) in the groundwater sample collected from monitoring well MW-7s (1,500 µg/L). The elevated concentration of zinc reported in groundwater at GW-7s for the May 2017 monitoring event may be attributable to the elevated turbidity of the groundwater sample collected from that location (40.4 NTUs). – 6 – May 17, 2017 11112 BRANDING IRON PLACE, WENDELL, NC 27591 919-366-3663 Office ● 919-995-0363 Cell ● bboutinpg@bellsouth.net None of the other metals detected in the groundwater or surface water samples collected from the site in May 2017 were reported at concentrations that exceed the applicable water quality standards. Pig Basket Creek is classified as Class C surface water by the NCDENR. No metals were reported in the surface water samples collected from the site at concentrations that exceed applicable surface water quality standards for Class C surface waters. 3.0 CONCLUSIONS AND RECOMMENDATIONS The results of the May 2017 assessment monitoring are generally consistent with the results from the previous assessment monitoring results. The concentrations of VOCs in groundwater at down gradient monitoring wells MW-7s and MW-8s have shown significant reductions since the inception of assessment monitoring and none were detected in samples collected from those wells in May 2017. Moreover, no VOCs were detected in the groundwater sample collected from down gradient Type II monitoring well MW-8d in May 2017. The concentrations of VOCs reported in the groundwater sample collected from down gradient Type III monitoring well MW-7d May 2017 showed significant decreases compared with the results of the November 2016 monitoring event, and are similar to historical concentrations detected at that location. No VOCs were reported in surface water samples SW-1 and SW-2. Cadmium was reported at a concentration exceeding the 15A NCAC 2L groundwater quality standard (2 µg/L) in the groundwater sample collected from monitoring well MW- 4 (18 µg/L). Cobalt was reported at concentrations exceeding the Groundwater Interim Maximum Allowable Concentration (1 µg/L) effective October 1, 2010 in the groundwater samples collected from monitoring wells MW-2R (1.9 µg/L), MW-3 (92 µg/L), and MW-4 (22 µg/L). Thallium was reported at concentrations exceeding the October 1, 2010 IMAC (0.2 µg/L) in the groundwater samples collected from monitoring wells MW-7s (0.94 µg/L, estimated), MW-7d (0.57 µg/L, estimated) and MW-8d (2.2 µg/L). Vanadium was reported at an estimated concentration exceeding the October 1, 2010 IMAC (0.3 µg/L) in the groundwater samples collected from monitoring wells MW- 3 (2.9 µg/L), MW-4 (3.5 µg/L), MW-7s (3.2 µg/L), MW-8s (1.7 µg/L) and MW-8d (2.0 µg/L). Inasmuch as vanadium has been historically reported at background monitoring well MW-1 at similar concentrations to those reported at monitoring wells MW-3, MW-4, MW-7s, MW-8s and MW-8d (see Table 4), it is concluded that the concentrations of vanadium measured in groundwater at the site are naturally occurring. Zinc was reported at a concentration exceeding the 15A NCAC 2L groundwater quality standard – 7 – May 17, 2017 11112 BRANDING IRON PLACE, WENDELL, NC 27591 919-366-3663 Office ● 919-995-0363 Cell ● bboutinpg@bellsouth.net (1,000 µg/L) in the groundwater sample collected from monitoring well MW-7s (1,500 µg/L). The elevated concentration of zinc reported in groundwater at GW-7s for the May 2017 monitoring event may be attributable to the elevated turbidity of the groundwater sample collected from that location (40.4 NTUs). None of the other metals detected in the groundwater or surface water samples collected from the site in May 2017 were reported at concentrations that exceed the water quality standards. Pig Basket Creek is classified as Class C surface water by the NCDENR. No metals were reported in the surface water samples collected from the site at concentrations that exceed applicable surface water quality standards for Class C surface waters. Based on the results of the May 2017 assessment monitoring event, it is recommended that semi-annual monitoring of groundwater and surface water be continued without modification. The results of the semi-annual monitoring will be evaluated for any changes in conditions that would indicate a sustained increase in dissolved contaminant concentrations and the likelihood that the groundwater quality standards will be consistently exceeded at the compliance boundary. If such conditions arise, Nash County will propose additional assessment and/or corrective actions to address the situation. The next semi-annual assessment monitoring event will be conducted in November 2017. If you have any questions or require further assistance regarding this report, please call me at 919-995-0363. Sincerely, Brian S. Boutin, P.G. Consulting Geologist Cc: William W. Hill, Jr., M.P.H., Health Director, Nash County Health Department Ben Barnes, Solid Waste Manager, Nash County Solid Waste Department Vance Moore, Garrett and Moore, Inc. Craig Fortner, Garrett and Moore, Inc. Garrett and Moore, Inc. Engineering Consulting Services 1428 Aversboro Rd., Suite D, Garner, NC 27529 Tel: (919) 926-7906 Fax: (866) 311-7206 Drawn by:Reviewed by:Drawing #: Drawing Date:1 SITE LOCATION MAP Nash County Municipal Solid Waste Landfill SR 1411 (Duke Rd.) Nashville, Nash County, North Carolina Source: USGS 7.5’ Topographic Quadrangle Series Castalia, North Carolina 1993 Figure No.Project #: Scale:USGS USGS 1:24,000 7/19/07 NCMSW0707 N SCALE 020001000 1000 2000 Latitude (deg. dec min.) Longitude (deg. dec min.) MW-1 44.5 2.0 36º 3.73366'77º 59.58531'34.5 - 44.5 26.31 243.96 217.65 16.8 5.01 40 1.9 MW-2R 23.0 2.0 36º 3.58734'77º 59.92608'13.0 - 23.0 6.61 203.81 197.20 16.6 4.77 59 1 MW-3 15.0 2.0 36º 3.49902''77º 59.81363'5.0 - 15.0 8.07 205.01 196.94 15.5 5.83 171 26.9 MW-4 25.0 2.0 36º 3.37664'77º 59.67142'5.0 - 25.0 9.25 201.81 192.56 17.3 5.51 104 4.1 MW-5 29.0 2.0 36º 3.65441'77º 59.9778''9.0 - 29.0 8.54 207.15 198.61 17.1 5.17 62 1.4 MW-6 50.0 2.0 36º 3.46888'77º 59.81451'40.0 - 50.0 9.30 206.07 196.77 16.1 5.62 104 2.4 MW-7s 20.0 2.0 36º 3.58989'77º 59.93535'5.0 - 20.0 4.46 200.30 195.84 18.6 6.05 70 40.4 MW-7d 42.5 2.0 36º 3.57918'77º 59.95242'37.5 - 42.5 4.32 199.94 195.62 17.2 5.56 79 2.9 MW-8s 20.0 2.0 36º 3.46856'77º 59.81381'5.0 - 20.0 3.81 196.80 192.99 15.7 5.69 60 9.2 MW-8d 39.0 2.0 36º 3.45172'77º 59.84358'34.0 - 39.0 3.82 196.95 193.13 18.1 5.90 70 9.4 Notes: MSL = Mean Sea Level BTOC = Below Top of Casing Monitoring well construction data for MW-1 through MW-6 taken from April-June 2006 Sampling Event Monitoring Report prepared by Withers & Ravenel. Elevation Top of PVC Well Casing (Feet MSL) Well Diameter (Inches) Field Parameters Turbidity (ntu) Screen Interval (Feet BGS) Groundwater Elevation (Feet MSL) Depth to Groundwater (Feet BTOC) Well Depth (Feet BGS) Monitoring Well and Groundwater Data Table 1 Water Quality Assessment Monitoring Nash County Municipal Solid Waste Landfill Nashville, Nash County, North Carolina Well Identity ntu = Nephelometric Turbidity Units Temp. Co BGS = Below Ground Surface NM = Not Measured May 2, 2017 pH S.C. umhos/cm S.C. = Specific Conductance Permit # 64-01 Water Table Hydraulic Effective Average Average Well Elevation Conductivity Porosity Hydraulic Linear Flow Identity (ft MSL)(ft/day)Gradient Velocity (ft/ft)(ft/day) MW-1 243.96 0.17 0.15 0.014 0.015 MW-2R 203.81 3.70 0.15 0.012 0.30 MW-3 205.01 0.52 0.15 0.022 0.076 MW-4 201.81 1.12 0.15 0.012 0.087 MW-5 207.15 0.47 0.15 0.010 0.031 MW-7s 200.30 2.04 0.15 0.011 0.147 MW-8s 196.80 0.80 0.15 0.020 0.104 Notes:1) ft MSL = feet above mean sea level. 2) Hydraulic Conductivity from slug testing performed by G.N. Richardson and Associates, Inc. and Brian S. Boutin, P.G. 3) Effective porosity value approximated based on published values for similar materials. 4) Average gradient obtained by dividing water-table elevation difference by horizontal distance between contour lines in the vicinity of each well (See Figure 3). 5) Average Linear Velocity calculated by the following formula: Vx = (K/ne)*(dh/dl) Where: Nashville, Nash County, North Carolina Permit # 64-01 Vx = average linear flow velocity (ft/day) K = hydraulic conductivity (ft/day) dh/dl = average hydraulic gradient (ft/ft) ne = effective porosity (unitless) Nash County Municipal Solid Waste Landfill Table 2 Groundwater Flow Data Water-Quality Assessment Monitoring May 2, 2017 VOLATILE ORGANIC CONSTITUENTS GWP Std NCAC 2L STD SW 846 8260 (µg/L)(ug/L)(ug/L) Acetone ND ND 18 10 ND ND ND ND ND ND ND ND NE 6000 Benzene ND 1.7 ND ND ND 1.8 ND ND ND ND ND ND NE 1 Bromomethane ND ND ND ND ND ND ND ND ND ND ND ND NE 10 Chlorobenzene ND ND ND ND ND 3.1 ND ND ND ND ND ND NE 50 Chloroethane (Ethyl Chloride)ND ND ND ND ND ND ND ND ND ND ND ND NE 3000 Chloroform (Trichloromethane)ND ND ND ND ND ND ND ND ND ND ND ND NE 70 Chloromethane ND ND ND ND ND ND ND ND ND ND ND ND NE 3 1,4-Dichlorobenzene ND 0.71 ND ND ND 2.6 ND ND ND ND ND ND NE 6 Dichlorodifluoromethane (Freon-12; Halon)ND ND ND ND ND ND ND ND ND ND ND ND NE 1000 1,1-Dichloroethane ND 6.8 ND ND ND 1.4 ND 3.4 ND ND ND ND NE 6 1,1-Dichloroethene (Vinylidene Chloride)ND ND ND ND ND ND ND ND ND ND ND ND NE 7 1,2-Dichloroethene (Cis and Trans isomers)ND 9.3 ND ND ND 3.7 ND 2.8 ND ND ND ND 60 60 Ethylbenzene ND ND 0.51 ND ND ND ND ND ND ND ND ND NE 600 Methylene Chloride (Dichloromethane)ND 9.5 ND ND ND 1.5 ND 3.1 ND ND ND ND NE 5 Methyl Ethyl Ketone (2-butanone)ND ND ND ND ND ND ND ND ND ND ND ND NE 4000 Styrene ND ND ND ND ND ND ND ND ND ND ND ND NE 70 Tetrachloroethene (Tetrachloroethylene), (PCE)ND 1.9 ND ND ND ND ND 0.81 ND ND ND ND NE 0.7 Tetrahydrofuran ND ND 12 ND ND ND ND ND ND ND ND ND NE NE Toluene ND ND ND ND ND ND ND ND ND ND ND ND NE 600 1,1,1-Trichloroethane (Methylchloroform)ND ND ND ND ND ND ND ND ND ND ND ND NE 200 Trichloroethene (Trichloroethylene), (TCE)ND 4.9 ND ND ND 0.62 ND 2.4 ND ND ND ND NE 3 Trichlorofluoromethane (CFC-11) ND ND ND ND ND ND ND ND ND ND ND ND NE 2000 Vinyl Chloride ND ND ND ND ND ND ND ND ND ND ND ND NE 0.03 Total Xylenes ND ND ND ND ND 1.1 J ND ND ND ND ND ND NE 500 PESTICIDES GWP Std NCAC 2L STD EPA 8081 (µg/L)(ug/L)(ug/L) alpha-BHC NA NA NA NA NA NA NA NA NA NA NA NA 0.006 NE beta-BHC NA NA NA NA NA NA NA NA NA NA NA NA 0.019 NE delta-BHC NA NA NA NA NA NA NA NA NA NA NA NA 0.019 NE gamma-BHC NA NA NA NA NA NA NA NA NA NA NA NA NE 0.03 Aldrin NA NA NA NA NA NA NA NA NA NA NA NA 0.002 NE Endrin (total)NA NA NA NA NA NA NA NA NA NA NA NA NE 2 Methoxychlor NA NA NA NA NA NA NA NA NA NA NA NA NE 40 4,4'-DDD NA NA NA NA NA NA NA NA NA NA NA NA NE 0.1 4,4'-DDT NA NA NA NA NA NA NA NA NA NA NA NA NE 0.1 MISCELLANEOUS GWP STD NCAC 2L STD (µg/L)(ug/L)(ug/L) Fluoride NA NA NA NA NA NA NA NA NA NA NA NA NE 2000 Phenol NA NA NA NA NA NA NA NA NA NA NA NA NE 30 METALS GWP Std NCAC 2L STD (in ug/L)(ug/L)(ug/L) Antimony ND ND ND ND ND ND ND ND ND ND ND ND 1 1 Arsenic ND ND 1.1 1.1 ND ND 0.62 J ND ND ND 0.66 J 0.64 J NE 10 Barium 21 18 37 72 6.4 55 10 4.1 J 6.7 6.1 22 25 NE 700 Beryllium 0.14 0.24 J ND 0.26 J 0.34 J ND 0.20 J ND ND 0.093 J ND 0.093 J 4 4 Cadmium 0.099 J 0.99 J 0.28 J 18 0.13 J ND 1.50 0.65 J 0.91 J 0.27 J ND ND NE 2 Chromium 0.62 JB 0.73 JB 0.66 JB 2.2 JB 0.60 JB 0.86 JB 1.6 0.90 J 4.9 JB 2.0 0.92 JB 1.1 JB NE 10 Cobalt 0.51 J 1.9 92 22 ND 0.28 J 0.67 J 0.11 J 0.15 J 0.16 J 0.50 J 0.48 J NE 1 Copper 1.0 J 1.8 J 7.2 6.20 0.83 J 0.68 J 10.0 1.9 J 1.6 J 4.6 J 0.97 J 1.2 J NE 1000 Lead 0.22 J 0.15 J 0.95 J 2.60 0.12 J 0.16 J 1.3 0.10 J 0.57 J 0.14 J 0.48 J 0.52 J NE 15 Mercury ND 0.25 ND ND ND ND ND ND ND ND ND ND NE 1 Nickel 1.9 J 5.6 5.7 2.50 0.95 J 1.3 J 5.1 1.6 J 1.2 J 0.77 J 0.64 J 0.77 J NE 100 Selenium ND ND 2.1 J 1.5 J ND ND 1.4 J ND ND ND ND ND NE 20 Silver ND ND ND ND ND ND ND ND ND 0.076 J ND ND NE 20 Thallium 0.072 J ND 0.076 J 0.081 J ND ND 0.94 J 0.57 J ND 2.20 0.019 J 0.039 J 0.28 0.2 Vanadium ND ND 2.9 3.5 ND ND 3.2 ND 1.7 2.00 3.20 3.3 0.3 0.3 Zinc 22 49 36 200 18 22 1500 26 22 23 14 18 NE 1000 Notes: Values in boldface exceed the corresponding 15A NCAC 2L .0202 groundwater quality standard for Class GA groundwater.GWP Std = Solid Waste Section Groundwater Protection Standard NCAC 2L STD = North Carolina Groundwater Standard established in Title 15A of North Carolina Administrative Code Subchapter 2L J = Estimated value above laboratory method detection limit and below SWSL or reporting limit. B = Analyte found in associated field and/or laboratory blank.NA = Not Analyzed NE = Not Established NS = Not Sampled, No sample exists for this sampling period ND = None detected above laboratory method detection limit. MW-2R MW-4MW-3 Water Quality Assessment Monitoring MW-8d SW-2SW-1MW-6 MW-7s Table 3 MW-1 Nashville, Nash County, North Carolina MW-5 Nash County Municipal Solid Waste Landfill MW-7d Summarized Laboratory Analytical Results for Groundwater and Surface Water Samples MW-8s Permit # 64-01 May 2 and 3, 2017 Page 1 of 7 Sample ID Appendix II Constituent NCAC 2L Standard (µg/L)5/17/07 11/5-6/2007 5/13-14/2008 11/20-21/2008 5/19-20/2009 11/18-19/2009 5/6/10 11/29/10 5/9/11 11/14/11 5/3/12 11/8/12 5/9/13 10/31/13 5/1/14 11/5-6/2014 5/18-19/2015 11/5/15 5/5-6/16 11/7-8/16 5/2-3/17 MW-1 Antimony 1 NS ND ND ND ND ND ND 0.16 J 0.63 J ND ND ND ND ND ND ND ND ND ND ND ND Arsenic 10 NS ND ND 2.86 J ND ND ND ND ND 0.26 J 0.24 J 0.40 J 0.38 J ND ND ND ND ND ND ND ND Barium 700 NS 29.8 JB 43.2 JB 28.0 JB 17.7 J 28.4 JB 24 19 22 20 25 20 21 21 23 22 20 25 21 24 21 Beryllium 4 NS 7.55 JB 1.67 B ND ND ND ND ND ND ND ND ND ND 0.055 J 0.055 J ND 0.082 J 0.14 J 0.055 J 0.060 J 0.14Cadmium2NSNDNDNDNDNDNDNDNDNDNDND0.11 J 0.044 J 0.048 J ND 0.062 J 0.11 J 0.80 J 0.091 J 0.099 J Chromium 10 NS 2.84 JB 6.26 JB 4.89 JB 3.49 JB 3.51 J 1.2 J 1.4 1.6 2.7 B 0.20 J 3.2 0.26 J 0.87 J ND 0.93 J ND 3.5 B ND 1.4 JB 0.62 JB Cobalt 1 NS ND ND ND ND 2.05 J 0.64 J 0.72 J 0.90 J 0.66 J 1.1 0.81 J 0.61 J 0.60 J 1.1 0.70 J 0.66 J 1.2 0.62 J 0.55 J 0.51 J Copper 1000 NS 4.27 JB 9.02 JB 4.31 JB 3.96 JB 2.39 JB ND ND 0.93 J 1.0 J 1.2 J 2.0 J 0.63 J ND ND 1.4 J 0.54 J 1.8 J 1.4 J 0.59 JB 1.0 J Lead 15 NS 5.54 J 3.91 JB 5.27 JB ND ND 0.7 J ND 0.32 J 0.13 J 0.89 J 0.55 J 0.19 J 0.29 J ND ND 0.060 J 0.69 J 0.27 J 0.17 JB 0.22 J Mercury 1 NS ND ND ND ND ND ND ND ND 0.032 J ND ND ND ND ND ND ND ND ND ND ND Nickel 100 NS ND 6.50 J 7.02 J ND 3.76 J ND 1.6 J 2.0 2.3 2.1 1.7 J 1.6 J 1.8 J 1.8 J 2.0 1.7 J 2.6 2.3 2.2 1.9 J Selenium 20 NS ND ND ND ND ND ND ND ND ND 0.67 J ND ND ND ND ND ND ND ND ND ND Silver 20 NS ND 3.49 JB 4.21 JB 0.800 JB ND ND ND ND ND 0.14 J ND 0.082 J ND ND ND ND ND 0.013 J 0.012 J ND Thallium 0.2 NS ND ND ND ND ND ND ND ND ND 0.22 J ND 0.35 J 0.032 J 0.20 J ND 0.058 J 0.061 J 0.039 J 0.056 J 0.072 J Vanadium 0.3 NS ND ND ND 0.910 J ND 0.7 J 4.3 J 3.7 J 3.2 J ND ND 5.8 B 2.9 J 1.5 J ND ND ND ND ND ND Zinc 1000 NS 5.50 J 9.45 J 10.7 J 2.94 J 3.83 JB 9.1 J 6.3 J 19 B 22 27 B 11 9.6 J 15 6.8 7.6 J 18 9.3 J 19 22 22Acetone6000NSND4.60 J ND ND ND ND ND ND ND ND ND ND 18 ND ND ND ND ND ND ND Bromomethane 10 ND ND ND ND ND 0.49 J ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND Methylene Chloride (Dichloromethane)5 NS ND 1.8 B ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND Methyl Tertiary-Butyl Ether 20 ND ND ND ND ND 5.7 ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND Tetrahydrofuran NE NA NA NA NA NA NA ND 1.6 J 2.2 J ND ND ND ND 1.5 J 9.6 J 3.7 J ND ND ND ND ND Toluene 600 NS ND 0.290 JB ND ND ND ND ND ND ND ND ND ND ND 0.76 ND ND ND ND ND ND Total Xylenes 500 ND ND ND ND ND ND ND ND ND ND ND ND ND ND 0.67 J ND ND ND ND ND ND Fluoride 2000 ND ND ND ND ND ND ND ND 58 J ND 37 J 48 J ND ND ND ND NA NA NA NA NA Phenol 30 NS 7 7 2 4 ND ND 36 J ND ND ND ND ND ND ND ND NA NA NA NA NA MW-2R Antimony 1 5.73 ND ND ND ND ND ND 0.14 J 4.80 ND 0.14 J ND ND ND ND ND 0.069 J ND ND 0.089 J ND Arsenic 10 2.06 ND ND ND ND ND ND ND 1.00 ND 0.19 J ND 0.45 J ND ND ND ND 0.33 J ND ND ND Barium 700 21.7 B 22.2 JB 29.5 JB 23.5 JB 10.8 J 20.3 JB 84 14 15 14 16 14 49 16 17 17 17 16 19 20 18 Beryllium 4 ND 4.97 JB 4.53 B 5.91 ND ND ND ND 0.16 J 0.17 J ND 0.25 J 0.22 J 0.20 J 0.19 J 0.26 J 0.29 J 0.33 J 0.32 J 0.35 J 0.24 J Cadmium 2 6.05 B ND ND ND ND ND 0.56 J 0.45 J ND ND 0.20 J ND 0.23 J 0.086 J 0.049 J ND 0.11 J 0.11 J 0.29 J 0.92 J 0.99 J Chromium 10 4.16 B 1.84 JB 3.77 JB 4.00 JB 2.63 JB 2.82 J ND 1.5 1.4 J 1.7 JB ND 1.6 ND 3.3 ND 0.62 J ND 1.3 JB 0.58 J 1.5 JB 0.73 JB Cobalt 1 ND ND 3.67 J ND 2.05 J 5.06 J 150 2.1 3.6 6.8 2.0 2.0 4.3 1.3 1.2 1.2 1.1 3.2 1.3 1.7 1.9Copper10008.74 B 4.15 JB 6.56 JB 4.72 JB 3.89 JB 3.07 JB 2.8 J 0.82 J 1.2 J 1.3 J 2.0 J 1.2 J 1.6 J 0.98 J ND 1.5 J ND 1.2 J 1.5 J 1.7 J 1.8 J Lead 15 13.3 B ND ND 4.65 JB ND ND ND ND 0.31 J 0.19 J 0.14 J ND 0.40 J 0.32 J 0.18 J ND 0.078 J 0.30 J 0.15 J 0.33 J 0.15 J Mercury 1 0.350 B 0.054 J 0.31 0.055 J 0.096 J 0.047 J ND 0.13 J 0.14 J 0.51 0.16 J 0.19 J 0.078 J ND 0.15 J 0.094 J 0.070 J 0.16 J 0.11 J 0.097 J 0.25 Nickel 100 6.91 B ND ND 5.29 J ND 3.87 J 46 2.8 3.30 3.50 3.10 2.70 4.40 5.70 3.20 3.30 3.3 3.3 4.4 4.9 5.6 Selenium 20 13.8 B ND ND ND ND ND ND ND 0.97 J ND ND ND ND ND ND ND ND ND ND ND ND Silver 20 ND ND 3.53 JB 4.83 JB 0.700 JB ND ND ND ND ND ND ND 0.041 J ND ND ND ND ND 0.023 J 0.13 J ND Thallium 0.2 ND ND ND ND ND ND ND ND ND ND ND ND ND ND 0.019 J ND ND 0.011 J 0.024 J 0.24 J ND Vanadium 0.3 ND ND ND ND 2.39 J ND ND 5 10 B 2.8 J 0.24 J 0.41 J 2.0 JB 2.8 J 2.3 J ND ND ND ND ND ND Zinc 1000 23.2 B 19.4 22.2 20.3 14.8 19.7 B 54 23 30 37 47 B 26 12 31 24 23 40 23 31 44 49 Benzene 1 0.390 J 0.490 J 0.400 J 0.300 J ND 0.43 J 4.2 0.79 0.68 ND 0.83 0.72 0.96 1.2 1.3 1.4 1.8 0.96 1.4 ND 1.7 Chlorobenzene 50 ND ND ND ND ND ND 3.1 ND ND ND ND ND ND ND ND ND ND ND ND ND ND 1,4-Dichlorobenzene 6 ND ND ND ND ND ND 2.7 ND ND ND ND ND ND ND ND ND 0.56 0.56 0.6 ND 0.71 1,1-Dichloroethane 6 6.98 7.05 7.07 5.33 6.19 6 4.6 7.2 7.2 5.8 6.8 5.6 6.5 6.6 7.8 6.8 7.6 6 6.8 ND 6.81,1-Dichloroethene (Vinylidene Chloride)7 0.620 J ND 0.100 J ND ND ND ND ND ND ND ND ND ND ND ND 0.86 ND ND ND ND ND Cis-1,2-Dichloroethene (Cis-1,2-Dichloroethylene)60 6.03 6.77 6.08 5.64 6.6 6.3 5.4 1.2 7.9 6.1 8.7 7.3 8.5 9.0 9.8 9.3 11 7 9 ND 9.3 Dichlorodifluoromethane (CFC-12)1000 4.7 ND ND ND ND ND 2 ND ND ND ND ND ND ND ND ND ND ND ND ND ND Methylene Chloride (Dichloromethane)5 5.55 6.5 4.14 JB 4.00 5.09 8.40 19.0 8.3 6.4 3.6 B 7.1 5.0 7.4 7.4 ND 9.6 10 5 9 ND 9.5 Styrene 70 ND ND ND ND ND ND 0.54 J ND ND ND ND ND ND ND ND ND ND ND ND ND ND Tetrachloroethene (Tetrachloroethylene), (PCE)0.7 1.51 0.980 J 1 0.940 J 0.920 J 0.71 J 0.63 J 1.1 1.2 1.1 1.5 1.8 1.6 1.6 1.6 1.5 1.8 1.4 1.8 ND 1.9 Toluene 600 0.620 J 0.210 J 0.120 JB 0.190 J ND 0.42 JB ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND Trichloroethene(Trichloroethylene), (TCE)3 5.15 4.77 4.74 3.65 4.28 4.2 1.5 J 5.1 5.1 4.4 5 4.7 4.5 4.9 4.8 4.4 5.6 3.7 4.4 ND 4.9 Trichlorofluoromethane (CFC-11) 2000 1.2 0.35 0.620 J ND ND 0.33 J 1.2 J ND 0.69 ND 1.9 0.53 ND 0.81 0.52 ND ND 0.74 2.2 ND ND Vinyl Chloride 0.03 ND ND ND ND ND ND 1.0 J ND ND ND ND ND ND ND ND ND ND ND ND ND ND Total Xylenes 500 1.79 J 0.37 0.100 J 0.440 J ND ND 10 ND ND ND ND ND ND ND ND ND ND ND ND ND ND Fluoride 2000 ND ND ND ND ND ND 76 J ND ND ND 29 J 51 J ND 32 J ND 18 J NA NA NA NA NA Phenol 30 14 9 6 4 ND ND ND ND ND ND ND ND ND ND ND ND NA NA NA NA NA Sampling Date Analytical Results (µg/L) Table 4 Historical Results of Appendix II Assessment Monitoring Nash County Municipal Solid Waste Landfill Nashville, Nash County, North Carolina Permit # 64-01 Page 2 of 7 Sample ID Appendix II Constituent NCAC 2L Standard (µg/L)5/17/07 11/5-6/2007 5/13-14/2008 11/20-21/2008 5/19-20/2009 11/18-19/2009 5/6/10 11/29/10 5/9/11 11/14/11 5/3/12 11/8/12 5/9/13 10/31/13 5/1/14 11/5-6/2014 5/18-19/2015 11/5/15 5/5-6/16 11/7-8/16 5/2-3/17 Sampling Date Analytical Results (µg/L) MW-3 Antimony 1 5.89 ND ND ND ND ND 1.5 J 0.22 J 0.70 J 0.33 J 0.28 J ND ND ND ND ND ND ND ND 0.19 J ND Arsenic 10 4.65 ND ND 2.27 J ND ND 2.6 J ND 0.60 J ND ND 0.46 J 1..3 0.72 J 0.52 J ND 0.78 J 0.61 J 0.56 J 0.57 J 1.1 Barium 700 68.3 B 76.9 JB 85.8 JB 113 B 86.3 J 109 B 99 120 110 110 130 120 29 99 45 46 110 75 39 55 37 Beryllium 4 2.28 4.33 JB 9.29 B ND ND ND ND ND 0.29 J 0.16 J ND ND ND 0.054 J 0.073 J ND 0.047 J 0.11 J ND 0.091 J NDCadmium25.77 B ND ND ND ND ND ND 0.21 J 0.28 J ND 0.21 J ND 0.051 J 0.044 J 0.091 J ND 0.046 J 0.29 J 0.11 J 0.10 J 0.28 J Chromium 10 4.03 B 2.00 JB 7.21 JB 5.38 JB 6.38 JB 5.15 J ND 1.6 0.79 J 2.8 B ND 0.66 J ND ND ND 0.26 J ND 1.5 JB ND 0.97 JB 0.66 JB Cobalt 1 42 26.7 116 95 133 118 150 95 150 200 170 140 1.9 71 120 71 140 110 51 59 92 Copper 1000 9.06 B 4.05 JB 8.84 JB 7.00 JB 5.69 JB 4.31 JB 5.6 J 0.92 J 1.3 J 1.0 J 0.80 J 1.5 J 0.74 J ND 1.6 J 1.5 J 0.90 J 2.6 J 3.3 J 1.6 JB 7.2 Lead 15 14.2 B ND 7.12 JB 7.62 JB ND 8.98 J ND ND 0.63 J 0.25 J 0.18 J 0.16 J 1 1.2 0.48 J 0.43 J 0.15 J 0.53 J 0.68 J 0.48 JB 0.95 J Mercury 1 0.116 B ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND Nickel 100 6.13 B ND 8.79 J 9.14 J 7.00 J 7.95 J 6.7 J 10 11 16 9.8 6.7 0.60 J 17 4.6 2.7 2.5 15 1.8 J 2.8 5.7 Selenium 20 15.7 B ND 15.7 ND 7.91 J 11.7 14 J ND 0.86 J ND ND ND 0.20 J ND 0.16 J ND ND 0.59 J ND ND 2.1 J Silver 20 ND ND 3.71 JB 5.57 JB 1.66 JB 1.96 JB ND ND 0.25 J 0.12 J ND ND 0.032 J ND ND ND ND 0.028 J 0.026 J 0.034 J ND Thallium 0.2 ND ND 5.29 J 8.1 ND ND ND 0.18 J 1.3 0.53 J ND 0.17 J ND 0.023 J 0.22 J ND 0.038 J 0.22 J 0.019 J 0.074 J 0.076 J Vanadium 0.3 8.49 ND ND ND 2.90 J ND ND 6.4 3.3 J 1.0 J 0.16 J ND 6.7 JB 2.3 J 4.1 J 2.5 J ND ND 3.4 J ND 2.9 Zinc 1000 35.4 B 27.4 8.93 J 11.8 3.04 J 10.4 B ND 23 14 B 31 30 B 15 4.1 J 9.6 J 6.5 J 5.2 J 14 25 5.9 26 36 Acetone 6000 ND 4.63 J 12.6 J ND 23.5 J 26.1 ND ND 3.7 J 8.0 B 5.6 ND 2.7 J 1.5 J 14 6.9 3.0 J 29 38 38 18Benzene1ND0.350 J 0.140 J 0.210 J ND 0.32 J ND 0.72 ND 1.7 0.44 J 0.55 ND ND ND ND ND ND ND ND ND Chlrobenzene 50 ND ND ND ND ND ND ND ND ND 0.78 ND ND ND ND ND ND ND ND ND ND ND Chloroethane (Ethyl Chloride)3000 0.730 J ND 0.340 J ND ND ND 0.88 J ND 0.59 1.7 2.3 0.85 ND ND ND ND ND ND ND ND ND Chloromethane 3 ND 0.230 J ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND 1,1-Dichloroethane 6 0.730 J 0.670 J 0.120 J ND ND 0.65 J ND 0.71 ND 1.4 0.28 J ND ND ND ND ND ND ND ND ND ND 1,1-Dichloroethene (Vinylidene Chloride)7 0.490 J ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND cis-1,2-Dichloroethene (Cis-1,2-Dichloroethylene)60 0.270 J 0.730 J ND 0.490 J ND 0.97 J ND 1.2 0.74 1.1 0.66 0.94 ND ND ND ND ND ND ND ND ND Dichlorodifluoromethane 1000 1.47 ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND Ethylbenzene 600 0.720 J 0.120 J ND 0.290 J ND ND ND ND ND ND ND ND ND ND ND ND 0.64 ND ND 0.98 J 0.51 J Methylene Chloride(Dichloromethane)5 ND 0.640 J ND 0.420 J ND ND ND 0.76 J ND ND ND ND ND ND ND ND ND ND ND ND ND Methyl Ethy Ketone (2-butanone)4000 ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND 2.3 J ND ND Styrene 70 0.750 J 0.310 J ND ND ND 0.58 J 0.55 J 1.2 ND ND 0.59 0.5 0.54 0.85 ND 1.6 ND ND ND ND ND Tetrachloroethene (Tetrachloroethylene), (PCE)0.7 0.710 J 0.180 J ND ND ND ND ND ND ND ND 0.28 J ND ND ND ND ND ND ND ND ND Tetrahydrofuran NE NA NA NA NA NA NA NA 51 95 49 120 220 110 210 14 67 170 ND 28 60 12 Toluene 600 ND 0.370 J 0.200 JB 0.970 J 1.81 0.57 JB ND 0.93 ND ND ND ND ND ND ND ND ND ND ND ND ND Trichloroethene (Trichloroethylene), (TCE)3 ND 0.330 J ND ND ND ND ND ND ND 1.4 ND ND ND ND ND ND ND ND ND ND ND Vinyl Chloride 0.03 5.05 1.41 4.45 J 1.29 J 1.86 1.6 1.7 J 1.1 1.9 3.8 1.5 1.6 0.89 1.8 0.55 ND ND ND ND ND ND Total Xylenes 500 1.74 J 0.660 J 0.180 J 1.45 J 1.15 J 0.86 J ND 0.69 J ND ND ND ND ND ND ND ND ND ND ND ND ND Methoxychlor 40 ND ND ND ND 0.106 J ND ND ND ND ND ND ND ND ND ND ND NA NA ND ND ND4,4'-DDD 0.1 ND ND ND ND ND 0.0198 ND ND ND ND ND ND ND ND ND ND NA NA ND ND ND Phenol 30 5 8 11 13 4 ND ND 49 J ND ND ND ND ND ND ND ND NA NA NA NA NA Fluoride 2000 ND ND ND 100 ND ND 100 ND 38 J ND 90 J 74 J 41 J 69 J 61 J 35 J NA NA NA NA NA Page 3 of 7 Sample ID Appendix II Constituent NCAC 2L Standard (µg/L)5/17/07 11/5-6/2007 5/13-14/2008 11/20-21/2008 5/19-20/2009 11/18-19/2009 5/6/10 11/29/10 5/9/11 11/14/11 5/3/12 11/8/12 5/9/13 10/31/13 5/1/14 11/5-6/2014 5/18-19/2015 11/5/15 5/5-6/16 11/7-8/16 5/2-3/17 Sampling Date Analytical Results (µg/L) MW-4 Antimony 1 5.73 ND ND ND ND ND ND 0.16 J 0.52 J 0.14 J 0.19 J 0.33 J ND ND ND ND ND ND ND ND ND Arsenic 10 2.06 ND 4.82 J 6.54 J ND ND ND 1.1 1.1 ND 0.69 J 0.41 J 0.84 J ND ND ND 0.48 J ND 0.42 J 0.31 J 1.1 Barium 700 21.7 B 44.7 JB 111 B 66.2 JB 62.0 J 82.3 JB 98 93 110 81 83 210 3.8 J 150 62 180 88 37 30 150 72 Beryllium 4 ND 4.67 JB 4.97 B ND ND ND ND ND 0.40 J ND ND ND ND ND 0.094 J ND 0.13 J 0.19 J 0.15 J 0.18 J 0.26 JCadmium26.05 B ND ND ND ND ND ND ND 0.30 J ND ND ND 0.095 J 0.046 J 0.38 J 0.23 J 0.39 J 3.10 3.10 2.60 18 Chromium 10 4.16 B 2.51 JB 7.62 JB 5.26 JB 3.88 JB 4.57 J ND 1.8 0.99 J 2.4 B ND ND ND ND ND 1.4 ND 1.3 JB 1.1 1.6 JB 2.2 JB Cobalt 1 ND ND 35.8 18.7 20.4 21.5 20 36 48 23 15 40 0.06 J 30 22 56 28 11 12 51 22 Copper 1000 8.74 B 3.34 JB 10.9 B 6.66 JB 4.60 JB 5.36 JB 3.1 J 0.53 J 1.3 J 1.6 J 1.7 J 2.0 J 0.55 J 0.85 J 1.7 J 0.58 J 1.4 J 2.7 J 2.9 J 1.9 JB 6.20 Lead 15 13.3 B 5.23 J 8.65 JB 10.8 B ND 8.42 J ND 0.52 J 0.76 J 0.52 J 0.48 J 0.29 J ND 0.33 J 0.50 J 0.21 J 0.48 J 0.64 J 0.97 J 0.95 JB 2.60 Mercury 1 0.350 B ND ND ND ND ND ND ND ND 0.041 J ND ND ND ND ND ND ND 0.011 J ND ND ND Nickel 100 6.91 B ND ND ND ND ND ND 3.40 1.0 J 1.7 J 1.3 J 2.10 0.93 J 1.5 J 2.30 2.50 1.9 J 1.4 J 2.80 3.50 2.50 Selenium 20 13.8 B ND ND ND 3.29 J 5.11 J 7.4 J ND 0.93 J ND 0.57 J 1.10 ND ND 0.33 J ND 0.62 J ND ND ND 1.5 J Silver 20 ND ND 3.22 JB 4.84 JB 1.22 JB 0.8 JB ND ND 0.32 J ND ND ND 0.026 J ND ND ND 0.048 J ND 0.033 J 0.036 J ND Thallium 0.2 ND ND ND ND ND ND ND ND 0.65 J ND ND ND ND ND 0.033 J 0.12 J 0.14 J 0.017 J 0.046 J 0.033 J 0.081 J Vanadium 0.3 ND ND ND ND 4.30 J ND 0.98 J 6.0 3.9 J 3.3 J 3.1 J 0.76 J 3.1 JB 2.7 J 3.7 J 1.7 J ND ND ND ND 3.5 Zinc 1000 23.2 B 8.95 J 40.3 20.3 6.71 J 20.6 B 17 J 54 22 B 15 30 B 18 11 9.1 J 18 3.8 J 22 9.3 J 58 42 200 Acetone 6000 ND ND 4.02 J ND ND ND ND ND ND ND 4.8 J ND ND ND ND ND ND 8.8 ND ND 10Benzene1ND0.110 J ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND Chloroform (Trichloromethane)70 0.210 J 0.240 J ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND Ethylbenzene 600 ND 0.210 J ND 0.120 J ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND Methylene Chloride (Dichloromethane)5 ND 0.220 J 0.250 JB ND ND 3.4 ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND Toluene 600 0.580 J 0.790 J 0.160 JB 0.420 J 0.940 J 0.64 JB 1.7 0.5 0.86 0.89 0.30 J ND ND ND ND 0.83 ND ND ND ND ND Total Xylenes 500 1.78 J 1.05 J ND 0.770 J 0.430 J ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND alpha-BHC NE 0.026 ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND NA NA NA NA NA beta-BHC NE ND ND ND ND 0.0143 J ND ND ND ND ND ND ND ND ND ND ND NA NA NA NA NA delta-BHC NE ND ND ND ND ND 0.0101 JD ND ND ND ND ND ND ND ND ND ND NA NA NA NA NA 4,4'-DDD 0.1 ND ND ND ND 0.0098 J ND ND ND ND ND ND ND ND ND ND ND NA NA NA NA NA 4,4'-DDT 0.1 ND ND ND 0.0203 ND ND ND ND ND ND ND ND ND ND ND ND NA NA NA NA NAEndrin2ND0.0624 J ND ND ND ND ND ND ND ND ND ND ND ND ND ND NA NA NA NA NA Endrin Aldehyde 2 ND 0.0876 J ND ND ND ND ND ND ND ND ND ND ND ND ND ND NA NA NA NA NA Fluoride 2000 100 ND ND ND ND ND 47 J ND 120 140 51 J 79 J 13 J 75 J 40 J 55 J NA NA NA NA NA Phenol 30 5 5 6 2 ND ND 25 J 49 J ND ND ND ND ND ND ND ND NA NA NA NA NA MW-5 Antimony 1 ND ND ND ND ND ND ND 0.13 J 0.32 J 0.19 J ND ND ND 0.21 J ND ND ND ND ND 0.19 J NDArsenic105.29 ND 4.44 J ND ND ND ND 0.48 J 0.30 J 0.94 J 0.48 J ND 0.50 J ND ND ND ND ND ND ND ND Barium 700 17.0 B 13.5 JB 23.2 JB 16.4 JB 3.86 J 13.6 JB 5.7 J 5.1 6.9 6.7 7.0 6.1 6.9 7.2 8.0 6.2 5.3 4.3 J 6.6 6.3 6.4 Beryllium 4 2.28 5.60 JB ND ND ND ND ND 0.15 J 0.38 J 0.31 J 0.31 J 0.36 J 0.25 J 0.23 J 0.27 J 0.32 J 0.25 J 0.14 J 0.33 J 0.30 J 0.34 J Cadmium 2 5.11 B ND ND ND ND ND ND ND 0.22 J ND 0.50 J ND 0.071 J ND ND 0.45 J 0.046 J 0.035 J 0.12 J 0.11 J 0.13 J Chromium 10 4.56 B 2.34 JB 4.59 JB 4.00 JB 2.33 JB 1.95 J 0.6 J 1.7 1.3 2.5 B ND 1.1 ND ND ND 3.1 J ND 1.6 JB ND 1.3 JB 0.60 JB Cobalt 1 ND ND ND ND ND ND ND ND 0.25 J ND 0.35 J 0.13 J 0.079 J 0.055 J 0.16 J 0.86 J ND 0.052 J 0.040 J 0.18 J ND Copper 1000 9.79 B 3.44 JB 7.40 JB 4.13 JB 3.11 JB 3.43 JB ND ND 0.90 J 0.73 J 1.2 J 1.0 J 1.0 J ND 1.1 J 0.46 J ND 0.45 J 0.77 J 1.5 JB 0.83 J Lead 15 8.50 B 9.00 J ND 8.46 JB ND ND ND ND 0.43 J 0.15 J 0.67 J ND 0.20 J 0.35 J 0.21 J ND 0.065 J 0.13 J 0.25 J 0.54 JB 0.12 J Mercury 1 0.085 B ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND Nickel 100 ND ND ND ND ND ND ND ND 1.1 J 1.1 J 1.3 J 0.97 J 0.86 J 0.76 J 1.0 J 2.00 0.80 J 1.2 J 0.98 J 1.1 J 0.95 J Selenium 20 15.0 B ND ND ND ND ND ND ND 0.54 J ND 1.4 J 0.75 J 0.28 J ND ND ND ND ND ND ND ND Silver 20 ND ND 3.21 JB 4.41 JB ND ND ND ND 0.12 J ND 0.48 J ND 0.042 J ND ND ND ND ND 0.026 J 0.041 J NDThallium0.2 ND ND 5.27 J ND ND ND ND ND 0.28 J ND 2.9 J ND ND 0.017 J 0.019 J ND ND 0.013 J 0.039 J 0.045 J ND Vanadium 0.3 ND ND ND ND 3.12 J ND ND 5.5 3.7 J 2.8 J 0.44 J ND 3.6 JB 1.4 J 1.3 J ND ND ND ND ND ND Zinc 1000 9.09 B ND 5.78 J 5.45 J 7.61 J 4.53 JB 6.2 J 4.7 J 8.2 JB 18.00 27 B 11.00 8.1 J 12.00 5.0 J 3.8 J 16 2.6 J 7.0 J 23 18 Acetone 6000 ND ND 2.61 J ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND Ethylbenzene 600 ND 0.210 J ND 0.130 J ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND Methylene Chloride (Dichloromethane)5 ND ND 0.210 J ND ND ND ND ND ND ND ND ND ND ND ND 1.1 ND ND ND ND ND Toluene 600 0.580 J 0.810 J 0.120 JB 0.500 J 0.770 J 0.32 JB ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND Total Xylenes 500 ND 0.800 J ND 0.880 J 0.410 J 0.70 J ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND Fluoride 2000 ND ND ND ND ND ND 110 ND ND ND 30 J 55 J ND 37 J ND 22 J NA NA NA NA NA Phenol 30 9 5 7 2 ND ND ND 30 J ND ND ND ND ND ND ND ND NA NA NA NA NA Page 4 of 7 Sample ID Appendix II Constituent NCAC 2L Standard (µg/L)5/17/07 11/5-6/2007 5/13-14/2008 11/20-21/2008 5/19-20/2009 11/18-19/2009 5/6/10 11/29/10 5/9/11 11/14/11 5/3/12 11/8/12 5/9/13 10/31/13 5/1/14 11/5-6/2014 5/18-19/2015 11/5/15 5/5-6/16 11/7-8/16 5/2-3/17 Sampling Date Analytical Results (µg/L) MW-6 Antimony 1 8.49 ND ND ND ND ND ND 0.14 J 0.28 J 0.13 J ND 0.16 J ND ND ND ND ND ND 0.098 J 0.095 J ND Arsenic 10 2.35 ND 6.79 J ND ND ND ND ND ND 0.27 J ND 0.24 J 0.73 J ND 0.50 J ND ND ND ND ND ND Barium 700 76.2 B 44.9 JB 64.4 JB 53.9 JB 52.7 J 57.1 JB 47 51 41 46 44 46 44 43 52 51 51 51 54 57 55 Beryllium 4 ND 7.55 JB 2.11 B 7.89 ND ND ND ND ND ND ND 0.15 J ND ND ND ND ND ND ND 0.051 J NDCadmium24.81 B ND ND ND ND 0.54 J ND ND ND ND ND ND 0.10 J 0.65 J 0.038 J ND 0.043 J 0.029 J 0.048 J 0.12 J ND Chromium 10 8.37 B 3.34 JB 5.01 JB 2.99 JB 4.59 JB 3.02 J 0.71 J 1.8 1.6 1.8 JB 0.98 J 1.0 ND 0.39 J ND 0.61 J 0.64 J 1.8 JB ND 1.3 JB 0.86 JB Cobalt 1 ND ND ND ND 2.11 J 2.16 J ND 0.71 J 0.076 J 0.23 J 0.10 J 0.28 J 0.059 J 0.10 J 0.15 J 0.17 J 0.048 J 0.19 J 0.040 J 0.26 J 0.28 J Copper 1000 12.8 B 3.90 JB 8.13 JB 4.75 JB 4.75 JB 4.33 JB ND 0.58 J 0.59 J 0.69 J 0.85 J 0.69 J 0.37 J ND ND 0.16 J 2.2 J ND 0.44 J 1.3 JB 0.68 J Lead 15 14.8 B ND 5.06 JB 7.02 JB ND ND ND 0.20 J 0.23 J 0.15 J 0.16 J 0.22 J ND 0.28 J ND ND 0.073 J 0.089 J 0.084 J 2.1 B 0.16 J Mercury 1 0.105 B ND ND ND ND ND ND ND ND 0.053 J ND ND ND ND 0.033 J 0.045 J 0.049 J 0.11 J ND ND ND Nickel 100 6.85 B ND 5.56 J ND ND 2.83 J ND 1.2 J ND 1.7 J 1.6 J ND 0.49 J 0.77 J 0.66 J 1.8 J 2.9 1.0 J 1.5 J 1.5 J 1.3 J Selenium 20 17.0 B ND ND ND ND ND ND ND ND ND 0.71 J 0.61 J 0.22 J ND ND ND ND ND ND ND ND Silver 20 ND ND 3.39 JB 4.41 JB 0.78 JB ND ND ND ND 0.061 J 0.095 J 0.15 J 0.052 J ND ND ND ND 0.011 J 0.015 J 0.040 J ND Thallium 0.2 ND ND ND ND ND ND ND ND 0.14 J ND ND 0.81 J ND ND 0.093 J ND 0.023 J 0.017 J 0.0093 J 0.037 J ND Vanadium 0.3 18.3 ND ND ND 11.0 J ND 0.65 J 8.3 5.4 2.7 J 0.46 J 0.22 J 4.9 JB 2.4 J 2.0 J ND ND ND ND ND ND Zinc 1000 34.0 B 50.2 25 7.38 J 15.3 11.3 B 9.1 J 13 8.6 JB 23 25 B 8.5 J 10 J 12 6.1 J 5.9 J 20 7.6 J 11 24 22 Acetone 6000 ND ND ND ND ND ND ND ND ND ND ND ND ND 1.3 J ND ND ND ND ND ND NDBenzene1ND0.160 J ND 0.140 J 0.190 J 0.30 J ND 0.57 ND 1.3 ND 0.6 ND 0.96 0.81 1.4 ND 1.6 ND 1.6 1.8 Chlorobenzene 50 ND 0.0800 J ND 0.130 J ND 0.31 J ND 0.53 ND 0.65 ND 0.91 ND 1.4 1.2 2 ND 2.5 ND 3.3 3.1 Chloroethane (Ethyl Chloride)3000 ND ND ND ND ND 0.18 J ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND Chloroform (Trichloromethane)70 ND 0.160J ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND 1,4-Dichlorobenzene 6 ND 0.260 J ND ND ND 0.44 J ND 0.58 ND 0.72 0.41 J 0.7 0.53 1.1 1.2 1.5 1.2 1.8 1.7 3 2.6 Dichlorodifluoromethane (CFC-12)1000 ND ND ND ND ND ND 2.3 ND ND ND ND ND ND ND ND ND ND ND ND ND ND 1,1-Dichloroethane 6 1.23 0.910 J 0.370 J 0.650 J 0.760 J 1 0.83 J 1.2 0.53 1.9 0.49 J 1.1 0.54 1.2 1.4 1.4 0.88 1.5 0.9 1.3 1.4 cis-1,2-Dichloroethene (Cis-1,2-Dichloroethylene)60 0.840 J 1.22 J 0.540 J 1.15 J 1.10 J 1.5 1.3 2 0.86 2 0.78 2.2 0.9 2.6 2.8 3.3 1.5 3.6 1.4 3.3 3.7 Ethylbenzene 600 ND 0.150 J ND 0.190 J ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND Methylene Chloride (Dichloromethane)5 ND 0.420 J ND ND ND ND ND 0.87 J ND 0.71 JB ND ND ND 0.58 J ND 1.8 ND 1.4 ND 1.2 1.5Methyl Ethy Ketone (2-butanone)4000 ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND 0.73 J ND ND ND Tetrachloroethene (Tetrachloroethylene), (PCE)0.7 0.720 J 0.230 J ND 0.250 J ND ND ND ND ND 1.5 0.35 J ND ND ND ND 2.3 ND 0.63 ND ND ND Toluene 600 0.710 J 0.670 J 0.190 JB 0.720 J 0.880 J 0.46 JB ND 0.67 ND ND ND ND ND ND ND ND ND ND ND ND ND 1,1,1-Trichloroethane (Methylchloroform)200 0.630 J ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND Trichloroethene (Trichloroethylene), (TCE)3 0.330 J 0.400 J ND 0.160 J ND ND ND ND ND ND ND ND ND ND 0.59 2.3 ND 0.53 ND 0.56 0.62 Trichlorofluoromethane (CFC-11) 2000 1.1 ND 0.360 J ND ND ND ND ND ND ND ND ND ND 0.55 ND ND ND 0.74 ND ND ND Total Xylenes 530 ND 0.850 J 0.160 J 1.33 J 0.450 J 1.0 J ND 0.59 J ND ND ND ND ND 0.53 J ND 0.7 J ND 0.86 J ND 1.2 1.1 J Aldrin NE ND ND ND ND ND 0.0116 J ND ND ND ND ND ND ND ND ND ND NA NA NA NA NA 4,4'-DDT 0.1 ND ND 0.0291 J ND ND 0.0256 J ND ND ND ND ND ND ND ND ND ND NA NA NA NA NAFluoride2000ND0.1 ND ND ND ND 110 ND ND ND 42 J 52 J ND 33 J ND 17 J NA NA NA NA NA Phenol 30 8 4 5 2 ND ND ND 55 ND ND ND ND ND ND ND ND NA NA NA NA NA Page 5 of 7 Sample ID Appendix II Constituent NCAC 2L Standard (µg/L)5/17/07 11/5-6/2007 5/13-14/2008 11/20-21/2008 5/19-20/2009 11/18-19/2009 5/6/10 11/29/10 5/9/11 11/14/11 5/3/12 11/8/12 5/9/13 10/31/13 5/1/14 11/5-6/2014 5/18-19/2015 11/5/15 5/5-6/16 11/7-8/16 5/2-3/17 Sampling Date Analytical Results (µg/L) MW-7s Antimony 1 ----ND ND ND ND ND ND 0.47 J 0.79 J 1.40 1.20 0.59 J ND 0.17 J 0.15 J 0.12 J 0.12 J ND 0.096 J 0.15 J ND Arsenic 10 ----ND 7.38 J 5.17 J ND ND 6.6 J 1.0 J 1.40 1.2 J 2.80 1.10 ND 2.40 1.40 ND 0.80 J 0.37 J 0.55 J 0.88 J 0.62 J Barium 700 ----20.0 JB 97.0 JB 83.2 JB 101 57.4 JB 110 84 79 43 53 32 13 17 23 10 16 9 11 10 10 Beryllium 4 ----5.94 JB 4.57 B 7.37 2.86 J 1.2 2.5 2.10 2.20 1.80 1.50 1.60 ND 0.34 J 0.74 J 0.25 J 0.34 J 0.17 J 0.18 J 0.21 J 0.20 JCadmium2----0.210 J 0.54 J 0.65 J 0.66 J 0.43 J ND 0.54 J 0.36 J 0.6 J 1.20 1.70 0.51 J 0.69 J 0.32 J 0.29 J 0.26 J 0.30 J 0.53 J 0.63 J 1.50 Chromium 10 ----3.01 JB 11.4 B 11.2 B 14.9 B 6.14 J 15 1.9 J 3.9 5.3 B 2.1 1.5 ND 1.6 5.1 2.10 3.2 2.3 B 1.4 2.6 JB 1.6 Cobalt 1 ----ND 8.26 J 4.98 J 9.42 J 4.95 J 6.6 2.6 J 3.80 3.30 3.40 8.00 0.072 J 3.80 2.80 0.58 1.4 0.35 J 1.3 0.54 J 0.67 J Copper 1000 ----3.82 JB 30.7 B 30.8 B 50 B 19.8 B 61 10 J 14 12 14 14 3.9 J 11 22 10 14 7.6 10.0 6.9 10.0 Lead 15 ----3.69 J 15.4 B 19.6 B 19.9 11.7 18 15 17 13 15 10 0.51 J 4 8 1.9 3.8 1.5 2.0 1.7 JB 1.3 Mercury 1 ----ND ND ND ND ND ND ND ND 0.014 J ND ND ND ND ND ND ND ND ND ND ND Nickel 100 ----ND 18.2 J 15.8 J 22.9 J 11.2 27 10 10 9 12 13 5 6 7 4.2 5.1 4.8 5.7 4.6 5.1 Selenium 20 ----ND ND 11 8.47 J ND 11 J ND ND ND 1.8 J 0.88 J ND 0.19 J 0.28 J ND ND 0.37 J ND ND 1.4 J Silver 20 ----ND 3.59 JB 4.08 JB ND ND ND ND 0.13 J 0.47 J 0.67 J 0.15 J 0.034 J 0.042 J 0.16 J 0.053 J 0.074 J 0.030 J 0.093 J 0.041 J ND Thallium 0.2 ----ND ND ND ND ND ND ND ND 0.43 J 4.10 ND ND 0.064 J 0.11 J 0.084 J 0.068 J 0.044 J 0.082 J 0.051 J 0.94 J Vanadium 0.3 ----ND 14.3 J 13.6 19.3 J 2.48 J 25 4.6 J 8.6 3.2 J 2.1 J 2.5 J 3.2 JB 8.1 15.0 5.1 8.2 ND 3.9 J 3.2 J 3.2 Zinc 1000 ----6.79 J 406 677 694 647 730 960 660 B 1500 1500 B 1400 20 1300 2500 1300 1400 1700 2100 1400 1500 Acetone 6000 ----ND ND ND ND 2.2 J ND ND ND ND ND ND ND ND ND ND ND 8.6 ND ND ND1,1-Dichloroethane 6 ----3.92 J 0.360 J ND 0.240 J ND 0.52 J ND ND ND ND ND ND ND ND ND ND ND ND ND ND cis-1,2-Dichloroethene (Cis-1,2-Dichloroethylene)70 ----1.17 J 0.120 J ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND Ethylbenzene 600 ----ND ND 0.130 J 0.140 J ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND Toluene 600 ----ND 0.150 JB 0.430 J 0.960 J ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND Trichloroethene (Trichloroethylene), (TCE)3 ----1.02 J ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND Total Xylenes 500 ----ND 0.100 J 0.800 J 0.810 J 0.77 J ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND beta-BHC 0.019 ----ND 0.0506 J ND ND ND ND ND ND ND ND ND ND ND ND ND NA NA NA NA NA delta-BHC 0.19*----ND ND ND ND 0.0172 J ND ND ND ND ND ND ND ND ND ND NA NA NA NA NA Fluoride 2000 ----ND 100 100 100 134 80 J 160 100 120 92 J 90 J 49 J 100 62 J 40 J NA NA NA NA NA Phenol 30 ----6 6 3 4 ND ND 72 ND ND ND ND ND ND ND ND NA NA NA NA NA MW-7d Antimony 1 ----ND ND ND ND ND ND 0.15 J 0.24 J 0.26 J 0.22 J ND ND ND ND ND ND ND ND 0.23 J ND Arsenic 10 ----ND 3.99 J 3.87 J ND ND ND 0.45 J ND 0.31 J 0.49 J 0.31 J 0.67 J ND ND ND ND 0.33 J 0.37 J 0.49 J ND Barium 700 ----14.3 JB 22.0 JB 15.0 JB 3.12 J 17.7 JB 3.3 J 3.6 J 4.9 J 3.7 J 4.2 J 3.7 J 69.0 18.0 3.6 J 3.8 J 3.6 J 3.3 J 3.9 J 3.9 J 4.1 J Beryllium 4 ----2.43 JB 1.16 B ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND 0.11 J 0.054 J ND Cadmium 2 ----0.210 J ND ND ND ND ND 1.6 ND ND ND ND 0.075 J 0.088 J 0.032 J 0.56 J 0.093 J 0.045 J 0.87 J 0.42 J 0.65 JChromium10----4.09 JB 4.87 JB 3.74 JB 3.57 JB 5.26 J ND 1.7 1.4 1.9 B ND 1.1 ND ND ND 0.59 J ND 1.4 JB ND 1.1 JB 0.90 J Cobalt 1 ----ND ND ND ND 3.4 J ND 0.11 J 0.42 J 0.069 J 0.11 J 0.092 J 8.20 0.16 J 0.13 J 0.22 J 0.12 J 0.16 J 0.12 J 0.22 J 0.11 J Copper 1000 ----4.15 JB 7.99 JB 4.31 JB 4.12 JB 7.02 JB ND ND 1.1 J 0.69 J 0.61 J 0.81 J 2.6 J ND ND 0.30 J 1.9 J ND 0.53 J 0.48 J 1.9 J Lead 15 ----7.27 J 7.16 JB 7.60 JB ND ND ND 0.18 J 0.96 J 0.14 J 0.19 J 0.13 J 1.1 0.35 J 0.068 J ND 0.066 J 0.059 J 0.19 J 0.33 J 0.10 J Mercury 1 ----ND ND ND ND ND ND ND ND ND ND ND ND ND 0.033 J 0.083 J ND 0.23 0.034 J 0.050 J ND Nickel 100 ----ND 7.44 J ND ND 5.27 J ND 1.2 J 1.6 J 2.30 1.3 J 0.93 J 1.3 J 1.1 J 0.81 J 1.3 J 3.4 1.1 J 1.3 J 1.4 J 1.6 J Selenium 20 ----ND ND ND ND ND ND ND ND ND 0.48 J 0.63 J 5.80 ND ND ND ND ND ND ND ND Silver 20 ----ND 3.82 JB 4.63 JB 0.730 JB ND ND ND ND ND ND ND 0.024 J ND ND ND ND ND 0.11 J 0.055 J ND Thallium 0.2 ----5.53 ND ND ND ND ND ND ND ND ND ND ND ND 0.027 J ND 0.011 J 0.012 J 0.15 J 0.23 J 0.57 J Vanadium 0.3 ----ND ND ND 3.00 J ND ND 5.5 5.6 4.1 J ND ND 4.2 JB 3.7 J 1.6 J ND ND ND ND ND ND Zinc 1000 ----19.3 14.6 9.56 J 6.16 J 23.6 B 9.2 J 11 20 B 21 43 B 12 4.8 J 14 6.3 J 5.5 J 20 5.3 J 10 19 26 Benzene 1 ----ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND 1.6 NDChloroform (Trichloromethane)70 ----1.00 J 0.140 J ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND 1,4-Dichlorobenzene 6 ----ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND 3 ND Dichlorodifluoromethane (CFC-12)1000 ----ND ND ND ND ND 2.4 ND ND ND ND ND ND ND ND ND ND ND ND ND ND 1,1-Dichloroethane 6 ----2.39 J 2.74 J 2.17 J 2.72 J 2.5 2.7 2.8 3.5 3.2 3.4 3.2 3.8 3.4 4 3.6 4 3.8 3.9 J 6.1 3.4 cis-1,2-Dichloroethene (Cis-1,2-Dichloroethylene)60 ----1.63 J 1.98 J 1.76 J 2.18 J 2 2.3 2.3 2.8 2.7 3.2 3.1 3.7 3.2 4 3.5 4 3.6 3.4 9 2.8 Methylene Chloride (Dichloromethane)5 ----0.490 J ND 0.310 J ND 6.3 ND ND ND ND ND ND 1.3 1.4 1.4 4.6 3.7 4.1 3.6 9.5 3.1 Tetrachloroethene (Tetrachloroethylene), (PCE)0.7 ----0.140 J 0.310 J 0.370 J ND ND ND ND 0.58 0.54 0.7 0.78 0.73 0.74 0.76 0.69 0.75 0.99 0.74 2 0.81 Toluene 600 ----ND 0.160 JB 0.250 J 0.350 J 0.61 B ND ND ND ND ND ND ND ND ND ND ND ND ND ND Trichloroethene (Trichloroethylene), (TCE)3 ----0.990 J 1.32 1.11 1.4 1.2 1.3 1.3 1.7 1.8 1.8 2 2.1 2.1 2.2 2 2.5 2.3 2.4 4.4 2.4Trichlorofluoromethane (CFC-11) 2000 ----ND 0.390 J ND ND ND ND ND ND ND ND ND ND ND ND ND ND 0.63 ND ND ND Total Xylenes 500 ----ND 0.130 J 0.480 J ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND Fluoride 2000 ----0.1 ND ND ND ND 34 J ND ND ND 35 J 57 J ND 37 J 26 J 19 J NA NA NA NA NA Phenol 30 ----6 5 3 4 ND ND 30 J ND ND ND ND ND ND ND ND NA NA NA NA NA Page 6 of 7 Sample ID Appendix II Constituent NCAC 2L Standard (µg/L)5/17/07 11/5-6/2007 5/13-14/2008 11/20-21/2008 5/19-20/2009 11/18-19/2009 5/6/10 11/29/10 5/9/11 11/14/11 5/3/12 11/8/12 5/9/13 10/31/13 5/1/14 11/5-6/2014 5/18-19/2015 11/5/15 5/5-6/16 11/7-8/16 5/2-3/17 Sampling Date Analytical Results (µg/L) MW-8s Antimony 1 ----ND ND ND ND ND ND 0.21 J 0.23 J 0.72 J 0.14 J ND ND ND ND ND ND ND ND 0.091 J ND Arsenic 10 ----ND 5.33 J 6.07 J ND ND ND ND 0.36 J 1.3 J ND ND ND ND ND ND ND 1.00 ND ND ND Barium 700 ----45.4 JB 31.4 JB 86.0 JB 80.3 J 84.7 JB 120 26 10 18 8 7 6 8 5 7.1 5.4 9.0 6.6 8.3 6.7 Beryllium 4 ----5.60 JB ND 7.89 ND 1.59 ND ND ND ND ND ND ND 0.057 J ND ND ND 0.20 J 0.071 J 0.062 J NDCadmium2----0.200 J ND 0.19 J ND 0.22 J ND ND ND ND 2.00 ND 0.045 J 0.096 J ND ND 0.12 J 0.18 J 0.11 J 0.38 J 0.91 J Chromium 10 ----3.84 JB 8.47 JB 12.7 B 5.84 JB 9.93 J 4.4 J 1.9 3.0 2.0 B 2.0 3.9 2.5 3.3 3.4 4.6 4.3 3.3 B 3.8 3.4 JB 4.9 JB Cobalt 1 ----4.02 J ND 6.66 J ND 6.33 J ND 1.3 0.32 J 1.2 J 0.31 J 0.19 J 0.065 J 0.22 J 0.072 J 0.18 J 0.15 J 5.3 0.33 J 0.41 J 0.15 J Copper 1000 ----7.65 JB 7.93 JB 22.2 B 3.60 JB 19.3 B ND 1.7 J 0.78 J 3.4 J 0.76 J 1.0 J 0.37 J 1.2 J 1.8 J 0.55 J ND 5.90 0.66 J 1.5 JB 1.6 J Lead 15 ----8.96 J 8.38 JB 35.8 B ND 36.2 2.1 J 6.7 1.3 3.6 0.71 J 0.63 J 0.27 J 1.2 0.17 J 0.62 J 0.45 J 3.0 0.50 J 1.1 JB 0.57 J Mercury 1 ----ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND 0.14 J ND ND ND Nickel 100 ----ND ND 13.4 J ND 12.0 J ND 1.5 J ND 2.7 J ND ND 0.38 J 0.64 J 1.3 J 0.44 J 0.54 J 4.80 0.65 J 1.4 J 1.2 J Selenium 20 ----ND ND 10.5 ND 2.91 J ND ND ND ND 0.85 J 0.54 J ND 0.30 J ND ND ND 0.83 J ND ND ND Silver 20 ----ND 3.28 JB 3.57 JB 0.73 JB ND ND ND ND ND ND 0.063 J ND ND ND ND ND 0.044 J 0.049J 0.048 J ND Thallium 0.2 ----ND ND 5.22 J ND ND ND ND ND ND ND 0.26 J ND 0.014 J 0.063 J ND 0.016 J 0.056 J 0.15 J 0.031 J ND Vanadium 0.3 ----11.4 J 2.03 J 32.9 5.37 J 31.6 3.1 J 9.2 5.6 4.8 J 1.1 J 0.85 J 2.7 JB 5.8 2.4 J 2.2 J ND 6.0 ND ND 1.7 Zinc 1000 ----24.9 13.6 318 9.59 J 609 B 25 J 160 63 190 49 B 18 11 20 4.7 J 5.7 J 17 20 6.1 J 24 22 Acetone 6000 ----ND ND ND ND ND ND ND ND ND ND ND ND ND ND 16 ND ND ND ND NDChloroform (Trichloromethane)70 ----0.200 J 0.280 J ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND Chloromethane 3 ----0.230 J ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND Ethylbenzene 600 ----ND ND 0.140 J ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND Methylene Chloride 5 ----ND ND ND ND ND ND ND ND ND ND ND ND ND ND 2.8 ND ND ND ND ND Toluene 600 ----ND 0.110 JB 0.480 J 0.770 J 0.43 JB ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND Total Xylenes 500 ----ND ND 0.850 J 0.290 J 0.89 J ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND Fluoride 2000 ----0.1 ND ND ND 107 120 130 ND ND 30 J 54 J ND 33 J ND 18 J NA NA NA NA NA Phenol 30 ----5 6 3 4 ND ND 49 J ND ND ND ND ND ND ND ND NA NA NA NA NA MW-8d Antimony 1 ----ND ND ND ND ND 1.5 J 0.23 J 0.19 J 0.30 J 0.31 J 0.23 J ND ND ND ND ND ND 0.079 J 0.071 J ND Arsenic 10 ----ND 5.27 J ND ND ND ND ND ND 0.65 J 0.14 J 0.35 J 0.38 J ND ND ND ND 0.48 J ND ND ND Barium 700 ----37.6 JB 30.1 JB 18.2 JB 6.17 J 15.1 JB 5.1 J 4.9 J 5.2 5.8 5.9 5.0 5.3 5.2 5.1 4.8 J 5.2 6.2 5.6 5.4 6.1 Beryllium 4 ----2.09 JB 8.34 B 4.96 ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND 0.093 J Cadmium 2 ----0.200 J ND ND ND ND ND ND ND ND 0.25 J ND 0.089 J ND ND ND 0.084 J 0.045 J 0.29 J 0.22 J 0.27 J Chromium 10 ----8.03 JB 6.95 JB 5.64 JB 4.20 JB 3.8 J 1.5 J 1.9 2.5 2.9 B ND 1.3 ND 1.2 ND 1.0 1.2 2.3 B 0.85 J 1.3 JB 2.0 Cobalt 1 ----ND 3.97 J ND ND ND ND ND ND ND ND ND 0.066 J 0.015 J 0.022 J ND 0.054 J 0.12 J 0.088 J 0.037 J 0.16 J Copper 1000 ----7.10 JB 6.97 JB 4.99 JB 3.11 JB 3.63 JB ND ND ND 0.62 J ND ND 0.35 J ND ND 0.34 J 0.59 J ND 0.48 J ND 4.6 J Lead 15 ----9.97 J 8.54 JB 6.22 JB ND ND ND ND 0.16 J 0.30 J 0.15 J ND 0.17 J 0.28 J ND ND 0.078 J 0.15 J 0.16 J 0.14 JB 0.14 JMercury1----ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND Nickel 100 ----ND 7.48 J ND ND ND ND ND ND ND ND ND 0.23 J 0.67 J ND 0.83 J 0.66 J 0.39 J 0.41 J 0.56 J 0.77 J Selenium 20 ----ND ND ND ND ND ND ND ND ND 0.53 J 0.71 J ND 0.41 J ND ND ND ND ND ND ND Silver 20 ----ND 3.26 JB 4.51 JB ND ND ND ND ND ND ND ND 0.079 J ND ND ND 0.018 J 0.019 J 0.056 J 0.017 J 0.076 J Thallium 0.2 ----ND ND ND ND ND ND ND ND ND 0.14 J ND 0.18 J ND 0.043 J ND 0.016 J 0.032 J 0.16 J 0.022 J 2.20 Vanadium 0.3 ----14.1 J 3.50 J ND 4.00 J ND 1.2 J 3.4 J 5.60 3.4 J 0.97 J 1.8 J 3.8 JB 4.0 J 3.3 J ND 2.5 J ND ND ND 2.00 Zinc 1000 ----55.1 8.69 J 6.03 J ND 4.14 JB 8.7 JB 2.1 J 7.1 JB 20.0 20 B 6.5 J 2.9 J 8.2 J 1.3 J 2.0 J 14 1.7 J 4.5 J 18 23 Acetone 6000 ----2.84 J ND ND ND ND ND ND ND ND ND ND ND ND ND 9.3 ND ND ND ND ND Chloroform (Trichloromethane)70 ----0.900 J 0.280 J 0.140 J ND 0.33 J ND ND ND ND 0.31 J ND ND ND ND ND ND ND ND ND ND cis-1,2-Dichloroethene (Cis-1,2-Dichloroethylene)6 ----ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND 3 ND 1,1-Dichloroethane 6 ----ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND 3.4 NDEthylbenzene600----ND ND 0.220 J ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND Methylene Chloride (Dichloromethane)5 ----ND 0.550 JB ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND 4.4 ND Tetrachloroethene (Tetrachloroethylene), (PCE)0.7 ----ND ND ND ND ND ND ND ND ND 0.31 J ND ND ND ND ND ND ND ND ND ND Trichloroethene (Trichloroethylene), (TCE)3 ----ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND 2 ND Toluene 600 ----ND 0.140 JB 0.840 J 0.790 J 0.40 JB ND 0.65 ND ND ND ND ND ND ND ND ND ND ND ND ND Total Xylenes 500 ----ND ND 1.34 J 0.380 J 0.81 J ND 0.60 J ND ND ND ND ND ND ND ND ND ND ND ND ND Fluoride 1000 ----ND ND ND ND ND 120 ND ND ND 31 J 53 J ND 33 J ND 18 J NA NA NA NA NA Phenol 30 ----4 7 10 ND ND ND 36 J ND ND ND ND ND ND ND ND NA NA NA NA NA Page 7 of 7 Sample ID Appendix II Constituent NCAC 2L Standard (µg/L)5/17/07 11/5-6/2007 5/13-14/2008 11/20-21/2008 5/19-20/2009 11/18-19/2009 5/6/10 11/29/10 5/9/11 11/14/11 5/3/12 11/8/12 5/9/13 10/31/13 5/1/14 11/5-6/2014 5/18-19/2015 11/5/15 5/5-6/16 11/7-8/16 5/2-3/17 Sampling Date Analytical Results (µg/L) SW-1 Antimony 1 ----ND ND ND ND ND ND 0.63 J 4.50 0.23 J 0.19 J ND ND ND 0.31 J ND 0.076 J ND 0.33 J 0.25 J ND Arsenic 10 ----ND 5.59 J 3.01 J ND ND ND 0.77 J 1.40 0.99 J 1.10 0.31 J 0.44 J ND 0.83 J ND 0.98 J 0.53 J 0.99 J 0.44 J 0.66 J Barium 700 ----49.1 JB 42.4 JB 53.1 JB 24.9 J 46.2 JB 39 24 31 24 37 25 75 24 23 27 24 34 26 28 22 Beryllium 4 ----6.87 JB ND 8.84 ND ND ND 0.20 J ND ND ND ND ND ND 0.031 J ND 0.071 J 0.099 J 0.11 J 0.081 J NDCadmium2----0.270 J ND ND ND ND ND 0.26 J ND ND ND ND 0.26 J 0.039 J ND 2.90 0.067 J 0.30 J 0.090 J 0.065 J ND Chromium 10 ----2.50 JB 4.87 JB 3.99 JB 2.87 JB 3.02 J 1.4 J 2.30 1.9 J 2.7 B ND 1.00 ND 0.45 J 0.15 J 0.81 J 0.58 J 1.8 JB 1.50 1.2 JB 0.92 JB Cobalt 1 ----ND ND ND 2.02 J 2.57 J 2.8 J 0.79 J 1.80 1.60 2.60 1.40 89.0 0.57 J 0.94 J 1.2 0.15 J 0.84 J 0.82 J 0.70 J 0.50 J Copper 1000 ----4.75 JB 7.37 JB 4.86 JB 14.7 B 3.82 JB 4.0 J 0.70 J 1.1 J 1.4 J 1.4 J 1.2 J 0.66 J ND 2.5 J 0.74 J 0.81 J 1.4 J 4.4 J 0.68 JB 0.97 J Lead 15 ----ND ND 4.99 JB ND ND 1.3 J 0.69 J 0.93 J 0.8 J 1.10 0.60 J 0.21 J 0.45 J 1.50 0.39 J 1.20 0.48 J 1.80 0.40 JB 0.48 J Mercury 1 ----ND ND ND ND ND ND ND ND 0.040 J ND ND ND ND ND ND ND 0.018 J ND ND ND Nickel 100 ----ND ND ND ND 2.40 J 2.3 J 1.2 J 1.5 J 1.5 J 1.5 J ND 3.40 0.64 J 0.68 J 0.72 J 0.53 J 1.1 J 1.5 J 0.82 J 0.64 J Selenium 20 ----ND ND ND ND ND 3.7 J ND 3.00 ND 1.1 J 0.63 J 0.26 J 0.18 J ND ND ND ND ND ND ND Silver 20 ----ND 3.13 JB 4.54 JB 0.930 JB ND ND 0.22 J ND 0.12 J 0.18 J ND ND ND ND ND ND ND 0.030 J 0.046 J ND Thallium 0.2 ----ND ND ND ND ND ND 0.76 J ND 0.14 J 0.49 J ND ND ND 0.046 J 0.24 J 0.053 J 0.034 J 0.051 J 0.055 J 0.019 J Vanadium 0.3 ----ND ND ND 8.19 J ND 6.8 7.30 12 B 5.30 4.1 J 1.3 J 2.9 JB 3.0 J 6.20 ND 2.8 J ND 4.6 J ND 3.20 Zinc 1000 ----9.05 J 6.31 J 11.5 2.19 J 11.9 B 21 J 5.4 J 9.1 J 19.00 31 B 9.5 J 11.00 9.8 J 5.0 J 6.2 J 15 7.5 J 9.8 J 18 14 Acetone 6000 8.11 J 5.57 J ND ND ND ND ND ND ND ND 5 ND 1.9 J ND 9.8 ND ND ND ND NDMethylene Chloride (Dichloromethane)5 ----5.93 0.400 JB 0.290 J ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND delta-BHC NE ----ND ND ND ND 0.0197 JD ND ND ND ND ND ND ND ND ND ND NA NA NA NA NA gamma-BHC 0.03 ----ND ND ND 0.0233 J ND ND ND ND ND ND ND ND ND ND ND NA NA NA NA NA Toluene 1000 ----0.270 J ND ND ND ND ND ND ND ND ND ND ND ND ND ND NA NA NA NA NA Fluoride 1000 ----ND ND ND ND ND 69 J ND 78 J 90 100 80 J 56 J 82 J 60 J 43 J NA NA NA NA NA Phenol 30 ----10 6 2 4 ND 40 J 30 J ND ND ND ND ND ND ND ND NA NA NA NA NA SW-2 Antimony 1 ----ND ND ND ND ND ND 0.31 J 7.10 0.44 J 0.25 J ND ND ND 0.17 J ND 0.080 J ND 0.48 J 0.45 J ND Arsenic 10 ----ND 6.72 J ND ND ND ND 0.40 J 3.20 0.22 J 0.59 J 0.89 J 1.10 ND 0.97 J ND 0.78 J 0.68 J 0.77 J 0.52 J 0.64 J Barium 700 ----64.7 JB 43.0 JB 50.6 JB 27.1 J 46.8 JB 37 23 34 24 35 21 30 24 24 24 25 34 27 26 25 Beryllium 4 ----6.18 JB ND 4.52 ND ND ND ND ND ND ND ND ND 0.040 J 0.037 J ND ND 0.049 J 0.15 J 0.092 J 0.093 J Cadmium 2 ----0.140 J ND ND ND ND ND ND ND ND ND ND 0.13 J 0.036 J ND ND 0.063 J 0.15 J 0.093 J 0.073 J ND Chromium 10 ----2.92 JB 5.83 JB 4.25 JB 2.87 JB 3.21 J 1.1 J 2.00 2.00 2.5 B ND 1.70 ND ND 0.16 J 0.57 J 0.60 J 1.7 JB 1.80 1.2 JB 1.1 JB Cobalt 1 ----7.34 J 3.57 J 3.57 J 1.81 J 2.25 J 1.9 J 0.69 J 2.60 1.10 1.90 0.73 J 1.80 0.37 J 0.93 J 0.61 J 0.81 J 0.85 J 0.85 J 0.38 J 0.48 J Copper 1000 ----6.24 JB 7.42 JB 5.03 JB 3.53 JB 3.78 JB 1.7 J 0.66 J 1.3 J 1.5 J 1.5 J 0.73 J 1.0 J ND 2.0 J 0.42 J 1.2 J 1.4 J 3.0 J 0.90 JB 1.2 J Lead 15 ----ND ND 6.93 JB ND ND ND 0.41 J 1.00 1.00 0.77 J 0.62 J 1.20 0.48 J 1.40 0.26 J 1.10 0.60 J 1.70 0.40 JB 0.52 J Mercury 1 ----ND ND ND ND ND ND ND ND 0.040 J ND ND ND ND ND ND ND ND ND ND NDNickel100----ND ND ND ND 3.13 J ND 0.92 J 1.3J 2.30 1.3 J ND 0.72 J 0.38 J 0.79 J 0.73 J 1.0 J 1.0 J 1.2 J 0.75 J 0.77 J Selenium 20 ----ND ND ND ND ND ND ND 2.10 ND 0.85 J 0.93 J 0.37 J ND ND ND ND ND ND ND ND Silver 20 ----ND 3.39 JB 4.61 JB ND ND ND ND ND 0.080 J ND ND 0.093 J ND ND ND 0.11 J ND 0.074 J 0.058 J ND Thallium 0.2 ----ND ND ND ND ND ND 0.16 J ND ND ND ND 0.40 J 0.19 J 0.036 J 0.20 J 0.073 J 0.031 J 0.056 J 0.069 J 0.039 J Vanadium 0.3 ----5.61 J ND ND 7.90 J ND 5.6 8.2 13 B 3.2 J 3.6 J 1.4 J 6.9 B 3.5 J 7.4 1.6 J ND ND 4.7 J ND 3.3 Zinc 1000 ----30.1 8.96 J 9.56 J ND 14.4 B 3.7 J 3.8 J 7.2 J 18.0 22 B 5.9 J 6.3 J 10.0 5.1 J 3.6 J 16 8.9J 9.6 J 19 18 Acetone 6000 ----6.08 J 6.67 J ND ND ND ND ND ND 2.6 JB ND 14 ND 1.4 J ND ND ND ND ND ND ND Methylene Chloride (Dichloromethane)5 ----0.600 J 0.210 JB 0.430 J ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND Toluene 600 ----ND 0.180 J ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND alpha-BHC NE ----ND ND ND ND 0.0109 JD ND ND ND ND ND ND ND ND ND ND NA NA NA NA NA beta-BHC NE ----ND 0.136 JD ND ND ND ND ND ND ND ND ND ND ND ND ND NA NA NA NA NAdelta -BHC NE ----ND ND ND 0.0124 J 0.0198 JD ND ND ND ND ND ND ND ND ND ND NA NA NA NA NA Fluoride 1000 ----ND ND ND ND ND 130 ND 49 J ND 87 80 J 53 J 93 J 57 J 45 J NA NA NA NA NA Phenol 30 ----7 10 2 ND ND 47 J 74 ND ND ND ND ND ND ND ND NA NA NA NA NA Notes:NCAC 2L STD = Groundwater Quality Standard under Title 15A of North Carolina Administrative Code Subchapter 2L * - Solid Waste Section Groundwater Protection Standard (SWS GWP Standard) Laboratory results in bold exceed 15A NCAC 2L or 3B Standard or SWS GWP Standard ND - Not Detected above the Laboratory Reporting Limit NA = Not analyzed NE - Not Established NS = Not sampled J = Estimated value above laboratory method detection limit and below SWSL or reporting limit. D = Detected, but RPD is >40% between results in dual column method. 11112 BRANDING IRON PLACE, WENDELL, NC 27591 919-366-3663 Office ● 919-995-0363 Cell ● bboutinpg@bellsouth.net APPENDIX A Groundwater Sampling Forms 11112 BRANDING IRON PLACE, WENDELL, NC 27591 919-366-3663 Office ● 919-995-0363 Cell ● bboutinpg@bellsouth.net APPENDIX B Laboratory Reports And Chain-of-Custody Records Page 1 of 41 Page 2 of 41 Page 3 of 41 Page 4 of 41 Page 5 of 41 Page 6 of 41 Page 7 of 41 Page 8 of 41 Page 9 of 41 Page 10 of 41 Page 11 of 41 Page 12 of 41 Page 13 of 41 Page 14 of 41 Page 15 of 41 Page 16 of 41 Page 17 of 41 Page 18 of 41 Page 19 of 41 Page 20 of 41 Page 21 of 41 Page 22 of 41 Page 23 of 41 Page 24 of 41 Page 25 of 41 Page 26 of 41 Page 27 of 41 Page 28 of 41 Page 29 of 41 Page 30 of 41 Page 31 of 41 Page 32 of 41 Page 33 of 41 Page 34 of 41 Page 35 of 41 Page 36 of 41 Page 37 of 41 Page 38 of 41 Page 39 of 41 Page 40 of 41 Page 41 of 41