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Home My WebLink About7401_PittCountyMSWLF_GWMR_DIN28040_20160125Compounds Detected At or Above the SWSL during the July 2015 Sampling Event (1/25-26/2016) Northern Unit of the Pitt County Municipal Solid Waste Landfill (Permit #74-01) Well ID Parameter Results (µg/L) MDL (µg/L) NC SWSL (µg/L) NC 2L or 2B Std* (µg/L) GWP Std (µg/L) MCL (µg/L) Barium Total 123 1 100 700 -2000 Zinc Total 16.7 4.4 10 1000 -- P04^Barium Total 105 1 100 700 -2000 P07 Barium Total 179 1 100 700 -2000 P09 Barium Total 110 1 100 700 -2000 Barium Total 918 1 100 700 -2000 Benzene 2.1 0.15 1 1 -5 SW1 Zinc Total 23.3 4.4 10 1000 -- SW2 Zinc Total 18.6 4.4 10 1000 -- MDL = Method Detection Limit MCL = Federal Maximum Contaminant Level NC SWSL = North Carolina Solid Waste Section Limit GWP STD = groundwater protection standard J = The analyte was positively identified, but the value is estimated below the reporting limit. All concentrations reported in micrograms/liter (µg/L). ^Hydraulically upgradient well/sampling point Concentrations listed in bold exceeded the NC SWSL. Concentrations highlighted in yellow were detected above the 2L (or 2B) standards. The concentration of barium in well P16R is believed to be partially attributable to natural sediment as has been previously demonstrated. The barium concentration in a low-flow, filtered sample collected in January 2015 (see the January 2015 Annual Monitoring Report) did not exceed the 15A NCAC 2L standard whereas an unfiltered sample did, indicating that a portion of the barium at this location is associated with particulate materials. Furthermore, barium is ubiquitous in groundwater samples collected at this site. Barium was detected in every sample collected as part of the July 2016 sampling event, and the concentration exceeded the SWSL in upgradient well P04. The source of benzene in well P16R is unknown. MW3 P16R *15A NCAC 2L groundwater standards are listed for all groundwater sampling locations. 15A NCAC 2B standards are listed for surface water sampling locations (SW1 and SW2). yellow TABLE OF CONTENTS 1.0 INTRODUCTION ........................................................................................ 1 2.0 GROUNDWATER HYDROGEOLOGY............................................................ 1 3.0 SAMPLE COLLECTION AND ANALYTICAL ANALYSES ................................ 1 4.0 ANALYTICAL RESULTS .............................................................................. 2 5.0 SCHEDULED ANNUAL MONITORING ......................................................... 2 6.0 REPORT CERTIFICATION .......................................................................... 2 7.0 REFERENCES ............................................................................................. 2 FIGURES 1. Site Layout and Existing Monitoring Network 2. Groundwater and Surface Water Sampling Locations 3. Equipotential Map, January 25, 2016 TABLES 1. Monitoring Well Construction and Elevations 2. Monitoring Well Water Levels and Sample Purge Volumes 3. Calculations of Groundwater Velocity 4. Water Quality Parameters 5. Appendix I Target Parameters 6. List of Compounds Detected At or Above the SWSLs on 1/25-26/2016 APPENDICES A. Correspondence from the NC Division of Waste Management B. Laboratory Report and Chain-of-Custody Forms for Water Samples C. Monitoring Well and Surface Water Sampling Records 1.0 INTRODUCTION Groundwater Management Associates, Inc. (GMA) performed an annual monitoring event at the northern unit of the inactive Pitt County Solid Waste Municipal Landfill (Figure 1) from January 25 to 26, 2016. The work was performed by GMA on behalf of Mr. Phil Dickerson, PE, Pitt County Engineering Department. Annual monitoring is being conducted in accordance with letters dated September 10, 1998 and June 14, 2004 (Appendix A). Twenty-two groundwater-monitoring wells comprise the groundwater-monitoring network (Figure 1, Table 1). The water-quality monitoring network used for the January 2016 annual monitoring event of the northern unit of the landfill (Figure 2) consists of 5 hydraulically- upgradient wells (P4, P5, P6, MW8, and MW1R) and 9 groundwater monitoring wells (MW3, P2, P7, P9, P13, P13D, P16R, P21, P23). The hydraulically-upgradient surface water sample locations (SW1 and SW4) and the hydraulically-downgradient surface water sample location (SW2) were also sampled during the monitoring event. Sampling procedures and analytical methods complied with the approved Water Quality Monitoring Plan dated September 8, 1994, and subsequent groundwater policy memos issued by the Solid Waste Section (SWS) of DENR-DWM (Appendix A). 2.0 GROUNDWATER HYDROGEOLOGY Static water levels (Table 2) were measured in all 22 monitoring wells on January 25, 2016. The depth to groundwater ranged from 2.48 to 9.33 feet below the land surface, depending on local elevation at the well and proximity to surface water features. An equipotential map prepared using these water-level measurements (Figure 3) was similar to previous maps prepared for this facility, and generally indicates that the horizontal component of groundwater flow was directed toward the south in the direction of the large ditch forming the southern boundary of the facility. Estimates of horizontal groundwater velocity (Table 3) ranged from approximately 0.002 to 0.009 feet/day, or 0.73 to 3.29 feet/year. 3.0 SAMPLE COLLECTION AND LABORATORY ANALYSES The annual monitoring event occurred on January 25 and 26, 2016. Water samples collected from 14 monitoring wells and three surface water locations were analyzed in the field for water-quality parameters during sampling (Table 4). GMA used standard hand bailing sampling procedures to collect all samples. All groundwater and surface water samples were analyzed for Appendix I parameters. Samples were transferred to ENCO in an ice-filled cooler under chain-of-custody protocol. Copies of the chain-of-custody forms and the analytical report are provided in Appendix B. Laboratory method detection limits were at or below the Solid Waste Section Limits (SWSLs) for all Appendix I compounds (Table 5). Monitoring well and surface water sampling records are provided in Appendix C. FIGURES SW1 SW2 P12 MW6R P16R P20R P19 P18 P28P17 P11R P7 P13D P13 P9 P3 MW5 P8 P10 P24 P23P21 P2 MW3 P25 MW2 P26 P15 MW8 P14 MW1R P4 P5 P6 SW4 MW7D SW1 SW2 P12 MW6R P16R P20R P19 P18 P28P17 P11R P7 P13D P13 P9 P3 MW5 P8 P10 P24 P23P21 P2 MW3 P25 MW2 P26 P15 MW8 P14 MW1R P4 P5 P6 SW4 MW7D Date: 3/24/2015SITE LAYOUT AND EXISTING MONITORING NETWORK PROJECT 25101 0 500' FIGURE 1 -LEGEND- File: DRAWINGS/25101 FIG 1 PITT COUNTY LANDFILL, GREENVILLE, PITT CO., NC SCALE IN FEET MONITORING WELL SURFACE WATER SAMPLE RAILROAD CENTERLINE DITCHES PONDS PARCELS !> !> !> A A A A A A A A A AA A A A A A A A AA AA AA AA A A A AA A A AASW1 SW2 P12 MW6R P16R P20R P28 P4 !> !> !> A A A A A A A A A AA A A A A A A A AA AAA AA A A A AA A A AASW1 SW2 P16R P4 Date: 3/25/2015GROUNDWATER AND SURFACE WATER SAMPLING LOCATIONS - NORTHERN UNIT PROJECT 25101 0 500' $ FIGURE 2 -LEGEND- File: DRAWINGS/25101 FIG 2 PITT COUNTY LANDFILL, GREENVILLE, PITT CO., NC SCALE IN FEET A MONITORING WELL !>SURFACE WATER SAMPLE RAILROAD CENTERLINE DITCHES PONDS PARCELS P5 P6 MW1R MW8 P13 P13D P7 P2 MW3 P9 P23P21 P5 P4 P6 MW1 P11R P1276.83 P16R P20R P19 P28 P17 MW6R P23 P21 P9 P13DP13 MW4P7 P2 MW3 P26 P25 MW7 MW2MW8 MW8D P14 74.59 75.88 75.17 75.81 75.59 77.16 77.23 (76.59) 78.47 (76.09)77.97 80.04 P24 P10 P8 MW5 P3 78.95 78.25 77.35 80.04 81.0280.79 81.12 78 80 P15 140 120 10080 100 MW7D 76.34 77 77 80 79 76 78 MW1R(78.68) 76 81 81 79 75 75 80 80 100 100 120 140 80 80 80 80 80 80 80 80 80 8 0 8 0 80 80 8 0 80 80 80 80 0 350 700' EQUIPOTENTIAL MAP JANUARY 25, 2016 - LEGEND - PROJECT: 25101 FIGURE 3 DATE 3/25/2016 SCALE IN FEET GENERAL NOTES: 1. TOPOGRAPHIC CONTOUR INTERVAL = 2.0 FEET 2. GROUNDWATER CONTOUR INTERVAL = 1.0 FOOT3. ARROW INDICATES DIRECTION OF GROUNDWATER FLOW 4. WATER LEVEL ELEVATIONS ARE POSTED BY EACH WELL5. ( ) INDICATES DATA NOT USED 1" = 350' POND PROPERTY LINE TOPOGRAPHIC CONTOUR NORFOLK SOUTHERN RAILR O A D ( 1 0 0 ' R / W ) RAILROAD TRACKS GROUNDWATER ELEVATION CONTOUR WATER LEVEL(FEET ABOVE SEA LEVEL)77.31 DRW BY: EHS MONITORING WELL ABANDONED MONITORING WELL UNMEASURED MONITORING WELL INDICATES DIRECTION OFGROUNDWATER FLOW TABLES Table 1.Monitoring Well Construction and Elevations Pitt County Municipal Solid Waste Landfill, Pitt County, NC (Permit # 74-01) MW1R 85.48 82.50 40.0 50.0 42.5 32.5 MW3 82.97 80.50 35.0 45.0 45.5 35.5 MW6R 80.94 78.15 7.0 17.0 71.2 61.2 MW8 84.41 81.62 4.0 14.0 77.6 67.6 P02 84.65 80.60 11.0 15.0 69.6 65.6 P04 85.02 81.50 8.0 18.0 73.5 63.5 P05 85.94 82.30 8.5 13.5 73.8 68.8 P06 84.72 81.50 8.5 14.5 73.0 67.0 P07 85.41 81.90 11.0 16.0 70.9 65.9 P09 84.08 80.10 9.5 14.5 70.6 65.6 P11R 86.04 82.30 13.0 16.0 69.3 66.3 P12 79.31 75.90 10.5 17.5 65.4 58.4 P13 85.80 82.00 11.0 16.0 71.0 66.0 P13D 84.67 81.20 51.5 29.7 P16R 87.44 84.30 11.0 14.0 73.3 70.3 P17 80.38 76.30 8.0 11.0 68.3 65.3 P19 83.90 78.50 9.0 13.0 69.5 65.5 P20R 85.21 81.70 10.0 30.0 71.7 51.7 P21 82.07 77.80 8.0 11.0 69.8 66.8 P23 82.93 79.40 11.0 16.0 68.4 63.4 P26 84.59 82.20 9.0 14.0 73.2 68.2 P28 77.74 74.80 3.5 8.0 71.3 66.8 Well Number Top of Casing Elevation Land Surface Elevation Depth to Top of Screen Depth to Bottom of Screen Elevation of Top of Screen Elevation of Bottom of Screen Table 2.Monitoring Well Water Levels and Sample Purge Volumes Pitt County Municipal Solid Waste Landfill, Pitt County, NC (Permit # 74-01) MW1R 1/25/16 85.48 6.80 78.68 47.2 22.9 22.9 3.0 no MW3 1/25/16 82.97 6.38 76.59 41.1 20.0 20.0 3.0 no MW6R 1/25/16 80.94 5.77 75.17 14.6 7.1 7.1 3.0 no MW8 1/25/16 84.41 4.37 80.04 12.4 6.0 6.0 3.0 no P02 1/25/16 84.65 6.18 78.47 12.9 6.3 6.3 3.0 no P04 1/25/16 85.02 4.00 81.02 17.5 8.5 8.5 3.0 no P05 1/25/16 85.94 4.82 81.12 12.3 6.0 6.0 3.0 yes P06 1/25/16 84.72 3.93 80.79 13.8 6.7 6.7 3.0 yes P07 1/25/16 85.41 8.18 77.23 11.3 5.5 5.5 3.0 no P09 1/25/16 84.08 6.92 77.16 11.6 5.6 5.6 3.0 yes P11R 1/25/16 86.04 7.09 78.95 12.7 P12 1/25/16 79.31 2.48 76.83 18.4 9.0 4.3 1.5 yes P13 1/25/16 85.80 7.83 77.97 12.0 5.8 4.6 2.4 yes P13D 1/25/16 84.67 8.58 76.09 46.4 22.5 22.5 3.0 no P16R 1/25/16 87.44 9.19 78.25 8.0 3.9 3.0 1.6 yes P17 1/25/16 80.38 4.04 76.34 11.0 P19 1/25/16 83.90 6.55 77.35 11.9 P20R 1/25/16 85.21 9.33 75.88 24.2 11.7 11.7 3.0 no P21 1/25/16 82.07 6.48 75.59 8.8 4.3 3.8 2.7 yes P23 1/25/16 82.93 7.12 75.81 12.4 6.0 4.1 1.5 yes P26 1/25/16 84.59 4.55 80.04 11.8 P28 1/25/16 77.74 3.15 74.59 7.8 3.8 3.51 2.8 yes Well Number Depth to Water (feet) Height of Water in Well (feet) Three Well Volumes (gallons) Amount Purged (gallons) Elevation of WaterDate Elevation of Top of Casing Number of Well Volumes Purged not sampled not sampled not sampled not sampled Purged to Dryness? Table 3.Calculations of Groundwater Velocity Pitt County Municipal Solid Waste Landfill, Pitt County, NC (Permit # 74-01) Horizontal Horizontal Horizontal Hydraulic Hydraulic Groundwater Groundwater Well Gradient Conductivity Effective Velocity VelocityNumberDate(ft/ft)(ft/day)Porosity (ft/day)(ft/year) MW6R 1/25/16 0.003 0.50 0.29 0.005 1.89 P04 1/25/16 0.002 0.50 0.19 0.005 1.92 P12 1/25/16 0.004 0.20 0.43 0.002 0.68 P16R 1/25/16 0.003 0.80 0.24 0.010 3.65 P20R 1/25/16 0.003 0.10 0.32 0.001 0.34 P28 1/25/16 0.009 0.30 0.17 0.016 5.80 Table 4.Water Quality Parameters Pitt County Municipal Solid Waste Landfill, Pitt County, NC (Permit # 74-01) Well Number Sample Date pH Temperature (degrees Celsius) Conductivity (µS) Turbidity during collection of organic samples (ntu) Turbidity during collection of metals samples (ntu) MW1R 1/26/2016 4.71 16.3 61 6.3 6.3 MW3 1/26/2016 4.30 17.8 66 6.17 6.17 1/25/2016 6.48 15.5 1837 69.4 -- 1/26/2016 --------9.35 MW8 1/26/2016 4.01 14.7 61 74.9 74.9 P02 1/26/2016 4.24 16.6 44 44.2 44.2 1/25/2016 4.44 15.5 55 8.3 -- 1/26/2016 --------6.17 P05 1/26/2016 4.32 16.1 39 36.8 36.8 P06 1/26/2016 4.86 16.4 73 57.4 57.4 P07 1/25/2016 4.01 17.4 109 31.2 31.2 P09 1/25/2016 6.80 16.8 85 111 111 1/25/2016 6.31 16.1 49 131.0 -- 1/26/2016 --------9.36 P13 1/26/2016 4.79 17.8 41 25.9 25.9 P13D 1/26/2016 5.16 18.0 68 21.5 21.5 1/25/2016 5.92 16.1 3954 116 -- 1/26/2016 --------33.7 1/25/2016 6.28 17.5 415 74.3 -- 1/26/2016 --------6.17 P21 1/25/2016 4.24 15.8 48 14.4 14.4 P23 1/25/2016 4.97 18.2 42 138 138 1/25/2016 5.24 14.2 65 729 -- 1/26/2016 --------98.6 SW1 1/26/2016 3.93 10.0 37 6.37 6.37 SW2 1/26/2016 5.58 9.7 103 12.7 12.7 SW4 1/26/2016 5.03 10.6 134 4.17 4.17 MW6R P04 P12 P20R P28 P16R Table 5. Appendix I Target Parameters Pitt County Municipal Solid Waste Landfill, Pitt County, NC 74-01 CAS Number Name Other Names 2L Std.GWP Std.SWSL 630-20-6 1,1,1,2-Tetrachloroethane Ethane, 1,1,1,2- tetrachloro-NE 1 5 71-55-6 1,1,1-Trichloroethane; Methylchloroform Ethane, 1,1,1-trichloro-200 --1 79-34-5 1,1,2,2-Tetrachloroethane Ethane, 1,1,2,2- tetrachloro-0.2 0.18 3 79-00-5 1,1,2-Trichloroethane Ethane, 1,1,2-trichloro-NE 0.6 1 75-34-3 1,1-Dichloroethane; Ethyldidene chloride Ethane, 1,1-dichloro-6 --5 75-35-4 1,1-Dichloroethylene; 1,1- Dichloroethene;Ethene, 1,1-dichloro-7 --5 96-18-4 1,2,3-Trichloropropane Propane, 1,2,3- trichloro-0.005 --1 96-12-8 1,2-Dibromo-3- chloropropane; DBCP Propane, 1,2-dibromo- 3-chloro-0.04 --13 106-93-4 1,2-Dibromoethane; Ethylene dibromide; EDB Ethane, 1,2-dibromo-0.02 --1 107-06-2 1,2-Dichloroethane; Ethylene dichloride Ethane, 1,2-dichloro-0.4 --1 78-87-5 1,2-Dichloropropane Propane, 1,2-dichloro-0.6 --1 591-78-6 2-Hexanone; Methyl butyl ketone 2-Hexanone NE 40 50 108-10-1 4-Methyl-2-pentanone; Methyl isobutyl ketone 2-Pentanone, 4-methyl-NE 560 100 67-64-1 Acetone 2-Propanone 6000 --100 75-05-8 Acetonitrile; Methyl cyanide Acetonitrile NE 42 55 7440-36-0 Antimony Antimony NE 1 6 7440-38-2 Arsenic Arsenic 10 --10 7440-39-3 Barium Barium 700 --100 71-43-2 Benzene Benzene 1 --1 7440-41-7 Beryllium Beryllium NE 4 1 74-97-5 Bromochloromethane; Chlorobromethane Methane, bromochloro-NE 0.6 3 75-27-4 Bromodichloromethane; Dichlorobromomethane Methane, bromodichloro-0.6 --1 75-25-2 Bromoform; Tribromomethane Methane, tribromo-4 --3 7440-43-9 Cadmium Cadmium 2 --1 75-15-0 Carbon disulfide Carbon disulfide 700 --100 56-23-5 Carbon tetrachloride Methane, tetrachloro-0.3 --1 108-90-7 Chlorobenzene Benzene, chloro-50 --3 75-00-3 Chloroethane; Ethyl chloride Ethane, chloro-3000 --10 67-66-3 Chloroform; Trichloromethane Methane, trichloro-70 --5 7440-47-3 Chromium Chromium 10 --10 156-59-2 cis-1,2-Dichloroethylene; cis-1,2-Dichloroethene Ethene, 1,2-dichloro- ,(Z)-70 --5 10061-01-5 cis-1,3-Dichloropropene 1-Propene, 1,3-dichloro- , (Z)-0.4 --1 All units are in micrograms per liter (ug/L) 2L STD = 15A NCAC 2L groundwater standard GWP STD = groundwater protection standard SWSL = Solid Waste Section Limit Table 5. Appendix I Target Parameters Pitt County Municipal Solid Waste Landfill, Pitt County, NC 74-01 CAS Number Name Other Names 2L Std.GWP Std.SWSL 7440-48-4 Cobalt Cobalt NE 1 10 7440-50-8 Copper Copper 1000 --10 124-48-1 Dibromochloromethane; Chlorodibromomethane Methane, dibromochloro-0.4 0.41 3 100-41-4 Ethylbenzene Benzene, ethyl-600 --1 7439-92-1 Lead Lead 15 --10 74-83-9 Methyl bromide; Bromomethane Methane, bromo-NE 10 10 74-87-3 Methyl chloride; Chloromethane Methane, chloro-3 --1 78-93-3 Methyl ethyl ketone; MEK; 2-Butanone 2-Butanone 4000 --100 74-88-4 Methyl iodide; Iodomethane Methane, iodo-NE NE 10 74-95-3 Methylene bromide; Dibromomethane Methane, dibromo-NE 70 10 75-09-2 Methylene chloride; Dichloromethane Methane, dichloro-5 --1 7440-02-0 Nickel Nickel 100 --50 95-50-1 o-Dichlorobenzene; 1,2- Dichlorobenzene Benzene, 1,2-dichloro-20 --5 106-46-7 p-Dichlorobenzene; 1,4- Dichlorobenzene Benzene, 1,4-dichloro-6 --1 7782-49-2 Selenium Selenium 20 --10 7440-22-4 Silver Silver 20 --10 100-42-5 Styrene Benzene, ethenyl-70 --1 127-18-4 Tetrachloroethylene; Tetrachloroethene; Perchloroethylene Ethene, tetrachloro-0.7 --1 7440-28-0 Thallium Thallium NE 0.28 5.5 108-88-3 Toluene Benzene, methyl-600 --1 156-60-5 trans-1,2- Dichloroethylene; trans- 1,2-Dichloroethene Ethene, 1,2-dichloro- ,(E)-100 --5 10061-02-6 trans-1,3-Dichloropropene 1-Propene, 1,3-dichloro- , (E)-0.4 --1 110-57-6 trans-1,4-Dichloro-2- butene 2-Butene, 1,4-dichloro- , (E)-NE NE 100 79-01-6 Trichloroethylene; Trichloroethene Ethene, trichloro-3 --1 75-69-4 Trichlorofluoromethane; CFC-11 Methane,trichlorofluoro-2000 --1 7440-62-2 Vanadium Vanadium NE 3.5 25 108-05-4 Vinyl acetate Acetic acid, ethenylester NE 88 50 75-01-4 Vinyl chloride; Chloroethene Ethene, chloro-0.03 --1 1330-20-7 Xylene (total)Benzene, dimethyl-500 --5 7440-66-6 Zinc Zinc 1000 --10 All units are in micrograms per liter (ug/L) 2L STD = 15A NCAC 2L groundwater standard GWP STD = groundwater protection standard SWSL = Solid Waste Section Limit Table 6. List of Compounds Detected during the July 2015 Sampling Event (1/25-26/2016) Northern Unit of the Pitt County Municipal Solid Waste Landfill (Permit #74-01) Well ID Parameter Results (µg/L) MDL (µg/L) NC SWSL (µg/L) NC 2L or 2B Std* (µg/L) GWP Std (µg/L) MCL (µg/L) EB Copper Total 1.61 J 1.6 10 1000 -1300^ FB Copper Total 2.03 J 1.6 10 1000 -1300^ Antimony Total 0.338 J 0.22 6 -1 6 Arsenic Total 6.87 J 6.8 10 10 --10 Barium Total 54.8 J 1 100 700 -2000Beryllium Total 0.403 J 0.1 1 -4 4 Zinc Total 4.73 J 4.4 10 1000 -- Barium Total 123 1 100 700 -2000Beryllium Total 0.204 J 0.1 1 -4 4 Cobalt Total 3.71 J 1.1 10 -1 - Nickel Total 2.97 J 2.2 50 100 --Vanadium Total 2.84 J 1.4 25 -0.3 - Zinc Total 16.7 4.4 10 1000 -- Barium Total 50.1 J 1 100 700 -2000 Beryllium Total 0.285 J 0.1 1 -4 4 Barium Total 21.2 J 1 100 700 -2000 Beryllium Total 0.105 J 0.1 1 -4 4 Antimony Total 0.422 J 0.22 6 -1 6 Barium Total 105 1 100 700 -2000 Beryllium Total 0.172 J 0.1 1 -4 4 Copper Total 3.51 J 1.6 10 1000 -1300^ Zinc Total 4.64 J 4.4 10 1000 -- Antimony Total 0.321 J 0.22 6 -1 6 Barium Total 42.7 J 1 100 700 -2000Beryllium Total 0.308 J 0.1 1 -4 4 Copper Total 2.15 J 1.6 10 1000 -1300^ Vanadium Total 1.82 J 1.4 25 -0.3 -Barium Total 62.8 J 1 100 700 -2000 Beryllium Total 0.523 J 0.1 1 -4 4 Vanadium Total 1.84 J 1.4 25 -0.3 -Zinc Total 7.22 J 4.4 10 1000 -- Barium Total 179 1 100 700 -2000 Beryllium Total 0.325 J 0.1 1 -4 4Cobalt Total 1.72 J 1.1 10 -1 - Selenium Total 3.45 J 0.91 10 20 --50 Thallium Total 0.129 J 0.11 5.5 -0.28 2 Vanadium Total 2.19 J 1.4 25 -0.3 - Barium Total 110 1 100 700 -2000 Beryllium Total 0.604 J 0.1 1 -4 4 Cobalt Total 1.84 J 1.1 10 -1 - Selenium Total 1.26 J 0.91 10 20 --50 Thallium Total 0.114 J 0.11 5.5 -0.28 2 Barium Total 46.3 J 1 100 700 -2000 Beryllium Total 0.367 J 0.1 1 -4 4 Barium Total 74.8 J 1 100 700 -2000 Beryllium Total 0.122 J 0.1 1 -4 4Acetone16 J 1.2 100 6000 -- Antimony Total 0.985 J 0.22 6 -1 6 Barium Total 918 1 100 700 -2000Benzene2.1 0.15 1 1 -5 Chlorobenzene 0.6 J 0.17 3 50 -100 Cobalt Total 1.84 J 1.1 10 -1 -Ethylbenzene 0.41 J 0.13 1 600 -700 Nickel Total 6.72 J 2.2 50 100 -- Selenium Total 1.22 J 0.91 10 20 --50 Thallium Total 0.115 J 0.11 5.5 -0.28 2 Barium Total 47.8 J 1 100 700 -2000 Cobalt Total 1.16 J 1.1 10 -1 - Barium Total 19.6 J 1 100 700 -2000 Cadmium Total 0.625 J 0.36 1 2 --5 Vanadium Total 2.59 J 1.4 25 -0.3 - Zinc Total 7.48 J 4.4 10 1000 -- P13D P16R P21 P23 P05^ P06^ P07 P09 P13 MW1R^ MW3 MW8^ P02 P04^ Table 6. List of Compounds Detected during the July 2015 Sampling Event (1/25-26/2016) Northern Unit of the Pitt County Municipal Solid Waste Landfill (Permit #74-01) Well ID Parameter Results (µg/L) MDL (µg/L) NC SWSL (µg/L) NC 2L or 2B Std* (µg/L) GWP Std (µg/L) MCL (µg/L) Barium Total 14.6 J 1 100 700 -2000 Vanadium Total 1.82 J 1.4 25 -0.3 -Zinc Total 23.3 4.4 10 1000 -- Antimony Total 0.471 J 0.22 6 -1 6 Barium Total 35 J 1 100 700 -2000Zinc Total 18.6 4.4 10 1000 -- Antimony Total 0.3 J 0.22 6 -1 6 Barium Total 29 J 1 100 700 -2000Zinc Total 6.53 J 4.4 10 1000 -- MDL = Method Detection Limit MCL = Federal Maximum Contaminant Level NC SWSL = North Carolina Solid Waste Section Limit GWP STD = groundwater protection standard J = The analyte was positively identified, but the value is estimated below the reporting limit. All concentrations reported in micrograms/liter (µg/L). ^Hydraulically upgradient well/sampling point Concentrations listed in bold exceeded the NC SWSL. Concentrations highlighted in yellow were detected above the 2L (or 2B) standards. Concentrations highlighted in orange were detected above the GWP standard. SW1 SW2 SW4 *15A NCAC 2L groundwater standards are listed for all groundwater sampling locations. 15A NCAC 2B standards are listed for surface water sampling locations (SW1 and SW2). yellow orange APPENDIX A CORRESPONDENCE FROM THE NC DIVISION OF WASTE MANAGEMENT 4.~·;JrA ~.~~ ::;;-;-;;,,,~= NCDENR North Carolina Depa rtm ent of Environment and Natural Resources Dexter R. Matthews, Director Mr. Philip G. Dickerson Pitt COWlty Engineer Pitt County Office Building 1717 West Fifth Street Greenville, NC 27834 Division of Waste Management June 14,2004 Michael F. Easley, Governor William G, Ross Jr., secretary RE : Environmental Monitoring Requirements -Pitt County Landfill, Northern Port ion (Permit # 74-01) Dear Mr. Dickerson: The proposal submitted by Groundwater Management Associates, Inc. (GMA) on behalf of Pitt County to stop water quality monitoring oflhe northern portion on the Pitt County Landfill has been reviewed. TIle northern portion of th e facility is subject to monitoring requirements specified in 15A NCAC 13B .0600. Rule .0601 (a) states, "The Division shall require a solid waste management facility to provide such ground-water monitoring capability as the Division determines to be necessary to detect the effects of the facility on ground-water in the area." As stated in .0601 (a) (t-5), a number offaClors can be used in making such a determination. 1n addition to monitoring data, the "type of waste" the landfill accepted, the ground-water level in the area, and '\Ises that are being or may be made of any ground-water" that may have been affected by the facility are aU important factors in determining monitoring requirements. Arter reviewing these factors, the Solid Waste Section will continue to require limited water quality monitoring at the landfill for the following reasons: I. There is increased residential and business development on property adjacenllo the facility. Other properties in the general area of the site are also being developed. 2. TIle landfiU is unlined and therefore continues to produce leachate that affects groundwater. TIle affected groundwater evelltuaUy moves from beneath the sile. 3. The leachate may have contaminants that pose a risk to human health and the environment. 4. Allhough there is public water available in the general area of the landfi!l, there are a number of potable supp.ly wells within 500 feet of me landfill according to the 2001 Hurricane Landfill Assessment Project survey for the NC Department of Environment and Natmal Resources. However a modification of current monitoring requirements wil! be permitted. Beginning this calendar year, me Solid Waste Section will allow annual groundwater and surface water monitoring for the northern portion of the Pitt County Landfill. The wells and surface water locations will be sampled for the same list of constituents as have been sampled for in the past. Because the hydraulic gradient in the area is low, groundwater is slow to move and annual sampling should provide adequate detection monitoring fo r contaminant releases. The south ern portion will continue to he subject to the monitoring requirements of J SA NCAC 138 .1630 through .1637. 1646 Mail Service Center, Raleigh, North Carolina 27699-1646 Phone 919-733-4996 \ FAX 9t9-715-3605 \ tnternet http://wastenotnc.org An Equat OpporlUr.ily i Aff.rmativB Act:on Employer -Prime::! on Dual Purpose Recycled Paper One additional environmental monitoring issue for the northern portion of the landfill needs to be addressed, and that is the need to monitor for methane gas. Solid waste management rules require that concentrations of explosive gases, such as methane, not exceed the lower explosive limit of 5% by volume at the property boundary (15A NCAC 13B .0503). Because of the property development adjacent to the landfill there should be documentation that there is no threat to public health from the off-site migration of methane. The only reliable way to insure the detection of methane is to install a permanent methane monitoring system. The bar punch method with temporary monitoring locations that is being used at the landfill is not an acceptable method. Therefore the Solid Waste Section is requiring Pitt County to install a permanent methane monitoring system along the northern property boundary between the landfill and the adjacent residential property that is being developed. A methane monitoring plan that includes sampling probe construction design, proposed probe locations, and sampling methodology should be submitted to the Solid Waste Section for approval before implementation. A monitoring system installed according to accepted industry standards can provide more accurate and reproducible infonnation and increase the confidence level that protection of public health is being served. Thank you for your cooperat ion with this important matter. If you have any questions, please call me at (919) 733-0692, extension 257. Sincerely, d"~f4,~ Larry Rose Solid Waste section ee; James C. Coffey ~ Chief, Solid Waste Section Mark Poindexter -Head, Field Operations Branch Mark Fry -Eastern District Supervisor Chuck Boyette -Waste Management Specialist Pete Moncla, P.G. -GMA, Inc. APPENDIX B LABORATORY REPORT AND CHAIN-OF-CUSTODY FORMS FOR WATER SAMPLES Client Name ~, ,A" -.. . . , •• Address ENVIRONMENTAL CONSERVATION LABORATORIES CHAIN·OF·CUSTODV RECORD c \'+\1'1<:1':0-::>'>'<+ ,... .. "I .. u'/CQU-O,..." \::1V'+J ;":'::I'o-.luur l"aJI I_I ..:.:;ro-o£ IU \:11~' qo,...,\r.N rax IItHI} QCh;J:;ll!) Project Number Requested Analyses r • ,1 Project NameltYesc oi '" .0 <I.~nn r.""rt S lli!", 1 nn Pill Cn"n!" I "nrlfill • A nn I <Jl .0 CitylSTlZ1p PO • I Billing Into ~ .. 7.5 \ ?l \ )( z . NC 27 134 '0 8 Tel F" Reporting Gonteel c: Ii III Ii (252) 758·3310 Emma Shiolev a. Cl. Ti Samp/er(s) Name, AIl~jation (Print) BiHing Contact '-! f:..----.G\ \-t <; Vl', D ({J...I 6f'M « ~ Emma Shipley CO '" ,; Samp~~;,;x I I Site LocaUon I Time Zone 0 ~r!5 LL <0 i~ ~ 1iJ l ) Preservation (See Codes) (Combine as necessary) Collection Mattix Total # 01 l1emll Sample 10 (Reid Identification) Collection Date Time Camp/Grab (see codes) Cont(llners ---7,r. Wi'> ? Y 1 <--Total # of Containers Sample Klt Prepared By t6 o~T7Jl Relinquished By Oalemme R::;fcJw C-, I~ "2I.II~ I"':/~ Comment.sJSpeclaJ Reporting Requirements , Relinquished By U o"emme Received By Relinquished By OatefTime Received By Cooler /I's & Temps on Receipt ().1;;~ www.encolabs.com I-'age ~ or -L. Requested Turnaround Times Note: Rush requests subjecl lo acceptance by the facility 'I.. Standard _ Expedited Due ---.!---.!_ Lab Workorder C517012 Sample Comments 0'l"fT';" I I ~1 1~ 1/3' Datefnme Datemrne Condition Upon Receipt ...Jl Acceptable Unacceptable Matrix: GW-Groundwater SO-Soil OW-Drinking Water SE-Sediment SW-Surface Wate, WW-Waslewater A-Air O-olher (detail In comments) Preservatton: I-Ice H-HCI N-HN03 S-H2S04 NO·NaOH O-Other (detail In comments) Note : All samples submitted to ENCO labs are In accordance with the terms Bnd conditions lisle<! on the reverse ollhis lorm, unless prior wr~ten agreements BJCist I I I I i I I APPENDIX C MONITORING WELL AND SURFACE WATER SAMPLING RECORDS Pitt County Landfill -Jan 2016 Field Sheet (Water Levels Only) t=ijSj 8f'JB , Well Number 1 Date MWiR II'\. MW3 MW6R MW8 P02 P04 POS P06 P07 \\'a$t\~ P09 P11R P12 P13 P13D P16R P17 P19 P20R P2i P23 P26 P28 '\JJ Time ~ j '0 U '0 Q. ~'U; .... .CI o ra cit 0-:WCl ra c > .-CU UI _ ra ILIU i'V 'f 2..() I EHS/BNB 1 85.48 1: L{ g I EHS/BNB 1 82.97 CI : y v I EHS/BNB 1 80.94 I D 'f ~{) I EHS/BNB 1 84.41 ''1.: Lf 0 I EHS/BNB 1 84.65 I Of o~l-I EHS/BNB 1 85.02 1.0 ;'2..0 EHS/BNB 1 85.94 I Ci ~ ID EHS/BNB 1 84.72 C:;CO T,' ,) EHS/BNB 1 85.41 8 :$5 EHS/BNB 1 84.08 q : 10 EHS/BNB I 86.04 9'.6' EHS/BNB 1 79.31 9:'35" EHS/BNB I 85.80 ('1: 1"1-EHS/BNB 1 84.67 q~oG EHS/BNB I 87.44 1 .2.1-EHS/BNB I 80.38 Q;3 0 EHSIIBNB I 83.9Q Cf : '110 EHS/BNB J.,. 85.21 C/:C ' ..... "'" EHS/BNB 1 82.07 C1 '.cO I EHS/BNB 1 82.93 ( C " t..\ 0 I EHS/BNB 1 84.59 '1 : 2-<9 I EHS/BNB 1 77.74 ... ~ E ra is CI c 'iii-ra c uc 2 2 2 2 2 2 2 2 2 2 2 2 2 2 2 2 2 2 2 2 2 2 .... :c o 0 Q. Qj -.s.CI~ o it 't:ra ... -.c c :::I ... m UI it ... 'tJ C U c UI.!i 40.0 35 .0 7.0 4.0 11.0 8.0 8.5 8.5 11.0 9.5 13.0 10.5 11.0 11.0 8.0 9.0 10.0 8.0 11.0 9.0 3.5 -'tJ -C CU ra :=- .... :c-o 0 CUu .c-~1!~ CU it :::I C_UI 50.0 45.0 17.0 14.0 15.0 18.0 13.5 14.5 16.0 14.5 16.0 17.5 16.0 51.5' 14.0 11.0 13.0 30.0 11.0 16.0 14.0 8.0 ~ CU'tJ ... C C ra 1-1 _ 'tJ:c_ CU 0 CU C -u m1!~ b it :::I ~_UI ... -Bu rao :=1- o :c ... 0 .c-~1! CUit c_ 40 -50 1 \;. €I .s 35 -45 1 L-. '?e 7 -17 1 S ,++ 4 -14 1 i . ?+- 11 -15 1 ti . I B 8 -18 1 Lf . (;0 8.5 -13.51 Lf ,0 2. 8.5 -14.51 'J .~ '3 11 -16 1 ~.)8 9.5 -14.51 (0. elL ... 13 -16 11 ,09 10.5 -17.5 ?.!Le 11 -16 -=t .1;3 7-51.5 o ·SY) 11 -14 -1. {~ 8 -11 '-1.04 9 -13 lv. ')5 10 -30 I '{, -y~ 8 -11 1 (p . 4fi 11 -16 I-.:r-. I 2- 9 -14 1 '-t ,)'5 3.5 -8 1 "1 , 1<) Note condition of vent ~ (obstructed, I Note condition of well clear, other) cap, lock, casing, etc. sr.c,!.:. v.-r ,-\2 IV I y .-£cJ;\J~d I I'·,.{i c/i .( {elf ; J - .'-U((( -{Ittf/ n.rt'dr +lc'I . .L1 J I'\. Clod ~' 'ff tUt. ~ .- IlCI( rf'i Pia cI , '1'/ ,1'1 ilJ.J I{ (t 01 , (oJ l'\W'lS' ,., c~ I \/(iC{r .. -r (c~q' \j ~gJ.~ -rrc1..(~ .... /0 Yv. Y 1'1 (' ,--/ P. (if ('<if i~~-h~i.~ ( ,J 1"'0' (' I ~ 71 Col..v l ....,; t~(s +l{(s\ u ~ ",. i c. E ra ~ - Yes (I) Yes (I) '- Yes (DM) Yes (I) Yes (I) Yes (DM) Yes (I) Yes (I) Yes (I) Yes (I) No Yes (DM) Yes (I) Yes (I) Yes (DM) No No Yes (DM) Yes (I) Yes (I) No Yes (DM)