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HomeMy WebLinkAbout5503_LincolnCDLF_ASD_DIN25846_20160318Alternate Source Demonstration Lincoln County C&D Landfill Permit #55-03 Crouse, North Carolina S&ME Project No. 7235-14-019 Prepared for: Lincoln County 5291 Crouse Road Crouse, NC 28033 Prepared by: S&ME, Inc. 9751 Southern Pine Boulevard Charlotte, NC 28273 March 11, 2016 Alternate Source Demonstration Lincoln County C&D Landfill Permit #55-03 Crouse, North Carolina S&ME Project No. 7235-14-019 March 11, 2016 ii Table of Contents 1.0 Introduction ............................................................................................................ 1 2.0 Methodology .......................................................................................................... 1 2.1 Wells Selected/Installed for Assessment ....................................................................... 2 2.1.1 Monitoring Well Installation .............................................................................................. 2 2.1.2 Well Development ............................................................................................................... 3 2.2 Groundwater Monitoring Period ................................................................................... 3 2.2.1 Well Purging ....................................................................................................................... 3 2.2.2 Well Sampling ..................................................................................................................... 3 3.0 Hydrogeologic Findings ....................................................................................... 3 3.1 Groundwater Occurrence and Surface .......................................................................... 3 3.2 Estimation of Hydraulic Conductivity .......................................................................... 4 3.3 Horizontal Groundwater Gradients .............................................................................. 4 3.4 Groundwater Flow Rates ................................................................................................. 5 4.0 Analytical Findings ............................................................................................... 5 4.1 April 2014 Summary of Results ...................................................................................... 5 4.2 May 2014 Summary of Results ....................................................................................... 6 4.3 June 2014 Summary of Results ....................................................................................... 7 4.4 July 2014 Summary of Results ........................................................................................ 9 5.0 Conclusions .......................................................................................................... 10 Appendices Appendix I –Figures Appendix II –Tables Appendix III – Boring Logs and Well Construction Records Appendix IV – Soil Porosity Calculations Appendix V – Slug Test Data Sheets Appendix VI – Field Well Sampling Logs and Analytical Data Reports Appendix VII – Historical Tetrachloroethene Concentrations Alternate Source Demonstration Lincoln County C&D Landfill Permit #55-03 Crouse, North Carolina S&ME Project No. 7235-14-019 March 11, 2016 1 1.0 Introduction S&ME was contracted by Lincoln County to perform an Alternate Source Demonstration (ASD) for the Construction and Demolition (C&D) landfill at the Lincoln County Landfill facility. The purpose of the ASD was to attempt to characterize the source exceedances of Terachloroethene (PCE) in groundwater monitoring well MW-28. Compliance groundwater monitoring well MW-28 monitors groundwater up-gradient of the C&D Landfill and is positioned in a buffer area between the unlined MSW landfill “Area E” to the west and Phase I of the C&D Landfill to the east (here forward referred to as “buffer area”). The location of Area E, the C&D Landfill, and groundwater monitoring well MW-28 are shown on the attached Figure 1 in Appendix I. Concentrations of PCE in monitoring well MW-28 have exceeded 2L Standards since April 2008 and have been generally increasing in concentration since that time. Due to groundwater monitoring well MW-28’s close proximity to the unlined Area E, it was suspected that the PCE exceedances are coming from Area E and not the C&D Phase I landfill. Additional characterization was needed within the buffer area to determine the source of the PCE exceedances. On April 18, 2013, S&ME on behalf of Lincoln County, submitted a letter to the North Carolina Department of Environment and Natural Resources Solid Waste Section (NCDENR-SWS) which acknowledged the PCE exceedances in groundwater monitoring well MW-28 and voluntarily entered Lincoln County into the applicable Assessment Program. The April 18, 2013 letter detailed initial actions of installing a down-gradient compliance boundary groundwater monitoring well and preparing an assessment work plan. The compliance boundary well location and installation and assessment work plan preparation was approved by the NCDENR-SWS in a letter dated May 29, 2013. The approved down-gradient compliance boundary well, MW-36, was installed in June 2013 and a Groundwater Monitoring Well Installation Report was submitted by S&ME on behalf of Lincoln County to the NCDENR-SWS on August 14, 2013. On August 20, 2013, via email, the NCDENR-SWS accepted the Groundwater Monitoring Well Installation Report and requested proceeding with an assessment work plan. On November 5, 2013, S&ME on behalf of Lincoln County, submitted an Assessment Work Plan for the C&D Landfill to the NCDENR-SWS which focused on an Alternate Source Demonstration for the exceedances in groundwater monitoring well MW-28. The Assessment Work Plan was subsequently approved by the NCDENR-SWS on November 20, 2013. The following report details the work and analysis performed for the Alternate Source Demonstration. 2.0 Methodology This Alternate Source Demonstration was designed to investigate as to whether Area “E” is the source of the PCE exceedances in monitoring well MW-28. The purpose of the ASD was to further characterize the “buffer area” in regards to hydrogeologic connection and migration potential from Area “E” to the C&D Landfill. This ASD has a two part approach, the first was to establish a specific subset of wells within the buffer area to further evaluate the hydrogeologic characteristics between Area “E” and the C&D landfill. Alternate Source Demonstration Lincoln County C&D Landfill Permit #55-03 Crouse, North Carolina S&ME Project No. 7235-14-019 March 11, 2016 2 The second was to establish a groundwater monitoring period in the subset of wells to evaluate temporal groundwater quality within the buffer area. 2.1 Wells Selected/Installed for Assessment S&ME targeted select monitoring and observation wells within the buffer area along with additionally installed monitoring wells to establish groundwater flow and quality within the buffer area. Seven (7) groundwater wells were selected and are as follows: ♦Three (3) existing observation wells that were a part of previous site studies: •OW-1 •OW-4A •OW-16 ♦Two (2) existing monitoring wells: •MW-17 •MW-28 ♦Two (2) newly installed monitoring wells for this study: •MW-17R •MW-37 The locations of these monitoring wells are depicted on Figure 1 in Appendix I. 2.1.1 Monitoring Well Installation The two (2) newly installed groundwater monitoring wells (MW-17R and MW-37) were installed utilizing an ATV drill rig with 4.25-inch hollow-stem augers. Split-spoon samples were collected every five (5) feet for soil classification and select laboratory testing. The groundwater wells were constructed of 2-inch diameter Schedule 40 PVC casing with 15-feet of 0.010-inch machine slotted PVC screen. The sand pack consists of #2 silica sand extending from the base of the screen to approximately 2-feet above the screen. An approximate 2-foot bentonite seal was placed on top of the sand pack then completed to ground surface with a neat cement grout. Well screen elevations were determined in the field by a North Carolina Registered Professional Geologist (PG) so that well screens bracket the groundwater surface. The groundwater monitoring wells were completed with an above grade 4-inch by 4-inch steel protective cover with a lockable cap and sealed in the center of a 2-foot by 2-foot concrete pad. The protective cover is identified with a permanently affixed well I.D. tag in accordance with North Carolina well regulations. After construction was complete, the groundwater monitoring wells were surveyed by a North Carolina registered land surveyor to obtain ground surface elevations and top of PVC casing elevations. A table summarizing well construction and survey data is provided as Table 1 in Appendix II. Boring Logs and Well Construction Records for MW-17R and MW-37 are included within Appendix III. S&ME performed laboratory grain-size distributions with hydrometer and specific gravity tests on selected split-spoon soil samples recovered from the saturated portion of the screened interval from each of the two (2) newly installed groundwater monitoring wells. S&ME used the results of the laboratory grain size distribution with hydrometer and specific gravity tests to estimate effective porosity of the formation adjacent to the screened intervals of the groundwater monitoring wells. Alternate Source Demonstration Lincoln County C&D Landfill Permit #55-03 Crouse, North Carolina S&ME Project No. 7235-14-019 March 11, 2016 3 Effective porosity estimates calculated from the grain-size data are based on the soil classification and the “Variation of porosity, specific yield, and specific retention with grain size” table (Bear, J., 1972) in conjunction with the textural classification triangle for unconsolidated materials showing the relationship between particle size and specific yield (Fetter, C.W., 1994). Porosity calculation sheets along with the soil laboratory data sheets are included in Appendix IV. 2.1.2 Well Development Following well installation, the newly installed groundwater monitoring wells, as well as the four (4) observation wells in the buffer area, were developed/redeveloped to reduce the amount of clay, silt, and sand particles that may potentially be within the well due to installation activities or limited use. Development was performed using a field-cleaned well pump and polyethylene tubing. Development was be conducted by removing field specified amounts of water from the well while moving the pump up and down the well screen. Development continued until the water removed appeared visually clear or a minimum purge of five (5) well volumes was achieved. 2.2 Groundwater Monitoring Period The select subset of wells were sampled on a monthly basis beginning in April 2014 and ending in July 2014. Groundwater samples were analyzed for Appendix I volatile organic constituents (VOCs) and Appendix I inorganic constituents (total metals). 2.2.1 Well Purging Groundwater wells were purged using a disposable Teflon® bailer. Purging consisted of removing a minimum of three (3) consecutive well volumes and measuring field parameters of pH, conductivity, and temperature. Purging continued until field parameters stabilized or the well was evacuated to dryness. Field parameters are considered stabilized within ±0.2 pH units and ±10% for temperature and conductivity over 3 to 5 well volumes 2.2.2 Well Sampling Sampling was performed within twenty-four (24) hours of purging. Samples were collected using a disposable Teflon® bailer and placed in laboratory provided sample bottles. Sample bottles were packaged on ice and sent to a North Carolina certified laboratory for analysis. 3.0 Hydrogeologic Findings 3.1 Groundwater Occurrence and Surface The water level elevations calculated from the depth to water measurements and measuring point elevations were contoured to determine groundwater flow directions within the buffer area. Groundwater flow directions are perpendicular to the water table surface contours. The groundwater level data collected in April 2014 is presented on Figure 2 in Appendix I. The calculated water level elevations from the wells in the buffer area and the site topography were used to create Figure 2. The site topography was used to guide contours as control points so that water table contours would not extend Alternate Source Demonstration Lincoln County C&D Landfill Permit #55-03 Crouse, North Carolina S&ME Project No. 7235-14-019 March 11, 2016 4 above land surface (e.g. dry ravines and ditches). In addition, groundwater discharge areas (e.g. the unnamed tributaries) on Figure 2 were assumed to have a groundwater discharge elevation at the ground surface elevation at the centerline of the stream. Water level elevations measured during the period of this study are summarized in Table 2 in Appendix II for reference. Based upon the groundwater elevations in the vicinity of the buffer area and surrounding landfills, groundwater flows primarily toward the south, with secondary flow toward the unnamed tributaries to the southeast and southwest of the landfills. Based on the groundwater flow direction in the buffer area and C&D landfill, it is likely these areas are receiving a partial amount of flow from beneath Area “E”. 3.2 Estimation of Hydraulic Conductivity In order to evaluate the hydrogeological characteristics of the subsurface materials, S&ME performed in- situ permeability tests (slug tests) in each of the selected buffer area wells where water column was sufficient for testing. Slug tests was performed in the field using the rising-head method, in which water is pumped from the well and recharge is recorded with time. Rising-head permeability tests were computed from the field data using the Bouwer and Rice Graphical Method. In the Bouwer and Rice Method a plot of the displacement in water level versus time is generated and a slope line is automatically calculated or manually selected to calculate the hydraulic conductivity. The slope line can be manually selected to capture isolated segments of the curve if desired. Typically the displacement versus time plot produces one of three types of graphs: 1.A straight line segment early in the test from water draining to or from the sandpack in partially submerged sandpacked wells, if present (“A” segment of curve). This is typically not observed where the sandpack is fully submerged. 2.A straight line during the middle portion of the test representing drainage to or from the aquifer and is the desired portion of the data for the calculation of hydraulic conductivity (“B” segment of curve). In some cases this is a curved line between the “A” segment and the “C” segment. 3.A curved line during the later portion of the test tending to asymptotic conditions (“C” segment of curve). This curve may not be present in slow recharging wells (low hydraulic conductivity). In general, the methodology of selecting the slope line to calculate the K values is as follows: 1.The “A” segment of the curve, if present, was excluded. 2.The “B” segment of the curve was selected. 3.The “C” segment of the curve, if present, was excluded. Graph Reports for each well tested are included in Appendix V for reference. 3.3 Horizontal Groundwater Gradients The horizontal gradient, or degree of slope, of the groundwater table has a directly proportional effect on the rate of groundwater flow (considered in Section 3.4). The hydraulic gradient (i) in the vicinity of selected well in the buffer area was estimated by calculating the vertical difference between the groundwater elevation at each well and one or more nearby contour lines from Figure 2. This value was then divided by the horizontal distance measured from the well to the selected groundwater elevation contour line. Alternate Source Demonstration Lincoln County C&D Landfill Permit #55-03 Crouse, North Carolina S&ME Project No. 7235-14-019 March 11, 2016 5 3.4 Groundwater Flow Rates Horizontal permeability calculated from slug tests was used in conjunction with porosity calculated from grain-size analyses from saturated well screened intervals (where available) to calculate groundwater flow velocities. Groundwater velocity was calculated by multiplying the gradient (i) by the hydraulic conductivity (k) and dividing by the estimated effective porosity (ne) of the aquifer. Table 3 in Appendix II summarizes the groundwater flow rates for the selected wells within the buffer area. Based on the estimated flow rates in Table 3, it appears that that the wells within the buffer area range from 2 to 112 feet per year. 4.0 Analytical Findings Analytical results for the groundwater wells monitored during the ASD are summarized in Tables 5 through 8 in Appendix II. Detections above the NCAC 2L Groundwater Quality Standards (2L standards) or the Solid Waste Groundwater Protection Standards (SW GWP) are highlighted in gray. Field parameters measured during the sampling events are summarized in Table 4 in Appendix II. Field well sampling logs and laboratory data reports are included in Appendix VI for reference. 4.1 April 2014 Summary of Results Based on the laboratory analytical reports, six (6) VOCs and five (5) metals were detected above their respective 2L Standard or SW GWP Standard during the April 2014 monitoring event for buffer area wells. Results are summarized in Table 5 in Appendix II. Volatile Organic Compounds (VOCs) Monitoring wells MW-17R and OW-16 had multiple detections of VOCs above their respective 2L or SW GWP Standard. The detections exceeding standards are as follows: MW-17R ♦1,2-Dichloroethane detected at 0.48 J µg/L. 2L Standard is 0.4 µg/L. ♦Benzene detected at 4.7 µg/L. 2L Standard is 1 µg/L. ♦Methylene Chloride detected at 43 µg/L. 2L Standard is 5 µg/L. OW-16 ♦1,2-Dichloroethane detected at 0.57 J µg/L. 2L Standard is 0.4 µg/L. ♦1,4-Dicholorbenzene detected at 7.2 µg/L. 2L Standard is 6 µg/L. ♦Benzene detected at 7.7 µg/L. 2L Standard is 1 µg/L. ♦Methylene Chloride at 17 µg/L. 2L Standard is 5 µg/L. ♦Tetrachloroethane detected at 4.8 µg/L. 2L Standard is 0.7 µg/L. ♦Vinyl Chloride detected at 0.86 J. 2L Standard is 0.03 µg/L. Singular detections of Tetrachloroethene exceeding its respective 2L Standard of 0.7 µg/L were found in the following monitoring wells: Alternate Source Demonstration Lincoln County C&D Landfill Permit #55-03 Crouse, North Carolina S&ME Project No. 7235-14-019 March 11, 2016 6 ♦MW-17 at 1.2 µg/L, ♦MW-28 at 6.6 µg/L, ♦OW-1 at 1.8 µg/L, and ♦OW-4A at 5.4 µg/L. Inorganic Constituents (Metals) Thirteen (13) Appendix I metals were detected in the well sampled, five (5) of which were detected above their respective 2L Standard or SW GWP Standard: Chromium, Manganese, Nickel, Thallium, and Vanadium. ♦Chromium was detected above its 2L Standard of 10 µg/L in groundwater monitoring wells MW- 17R and OW-1 at concentrations of 27.0 µg/L and 11.2 µg/L, respectively. ♦Manganese was detected above its 2L Standard of 50 µg/L in groundwater monitoring well MW- 28 at a concentration of 87.8 µg/L. ♦Nickel was detected above its 2L Standard of 100 µg/L in groundwater monitoring well OW-1 at a concentration of 168 µg/L. ♦Thallium was detected above its SW GWP Standard of 0.28 µg/L in groundwater monitoring wells MW-17R, OW-1, and OW-16 at concentrations of 0.513 J, 0.619 J, and 0.690 J µg/L, respectively. ♦Vanadium was detected above its SW GWP Standard of 0.3 µg/L in groundwater monitoring wells MW-17R, MW-37, and OW-1 at concentrations ranging from 1.47 J to 34.6 µg/L. 4.2 May 2014 Summary of Results Based on the laboratory analytical reports, six (6) VOCs and five (5) metals were detected above their respective 2L Standard or SW GWP Standard during the May 2014 monitoring event. Results are summarized in Table 6 in Appendix II. Volatile Organic Compounds (VOCs) Monitoring wells MW-17, MW-17R, MW28, and OW-16 had multiple detections of VOCs above their respective 2L or SW GWP Standard. The detections exceeding standards are as follows: MW-17 ♦Tetrachloroethane detected at 1.3 J µg/L. 2L Standard is 0.7 µg/L. ♦Vinyl Chloride detected at 0.43 J µg/L. 2L Standard is 0.03 µg/L. MW-17R ♦Benzene detected at 4.8 µg/L. 2L Standard is 1 µg/L. ♦Methylene Chloride detected at 41 µg/L. 2L Standard is 5 µg/L. ♦Vinyl Chloride detected at 0.44 J µg/L. 2L Standard is 0.3 µg/L. MW-28 ♦Tetrachloroethane detected at 7.1 J µg/L. 2L Standard is 0.7 µg/L. ♦Vinyl Chloride detected at 0.87 J µg/L. 2L Standard is 0.03 µg/L. Alternate Source Demonstration Lincoln County C&D Landfill Permit #55-03 Crouse, North Carolina S&ME Project No. 7235-14-019 March 11, 2016 7 OW-16 ♦1,4-Dicholorbenzene detected at 7.4 µg/L. 2L Standard is 6 µg/L. ♦Benzene detected at 6.8 µg/L. 2L Standard is 1 µg/L. ♦Methylene Chloride detected at 10 µg/L. 2L Standard is 5 µg/L. ♦Tetrachloroethane detected at 4.3 µg/L. 2L Standard is 0.7 µg/L. ♦Trichloroethene detected at 3 µg/L. 2L Standard is 3 µg/L. ♦Vinyl Chloride detected at 0.83 J. 2L Standard is 0.03 µg/L. Singular detections of Tetrachloroethene exceeding its respective 2L Standard of 0.7 µg/L were found in the following monitoring wells: ♦OW-1 at 1.2 µg/L, and ♦OW-4A at 5.2 µg/L. Inorganic Constituents (Metals) Thirteen (13) Appendix I metals were detected in the wells sampled, five (5) of which were detected above their respective 2L Standard or SW GWP Standard: Chromium, Lead, Nickel, Thallium, and Vanadium. ♦Chromium was detected above its 2L Standard of 10 µg/L in groundwater monitoring well OW-1 at a concentration of 17.8 µg/L. ♦Lead was detected above its 2L Standard of 15 µg/L in groundwater monitoring well OW-1 at a concentration of 29.3 µg/L. ♦Nickel was detected above its 2L Standard of 100 µg/L in groundwater monitoring well OW-1 at a concentration of 180 µg/L. ♦Thallium was detected above its SW GWP Standard of 0.28 µg/L in groundwater monitoring wells OW-1 and OW-16 at concentrations of 0.702 J µg/L and 0.619 J µg/L, respectively. ♦Vanadium was detected above its SW GWP Standard of 0.3 µg/L in groundwater monitoring wells MW-17R, MW-37, OW-1, OW-4A, and OW-16 at concentrations ranging from 2.40 J µg/L to 10.1 J µg/L. 4.3 June 2014 Summary of Results Based on the laboratory analytical reports, six (6) VOCs and five (5) metals were detected above their respective 2L Standard or SW GWP Standard during the June 2014 monitoring event. Results are summarized in Table 7 in Appendix II. Volatile Organic Compounds (VOCs) Monitoring wells MW-17R, MW28, MW-37, OW-4A, and OW-16 had multiple detections of VOCs above their respective 2L or SW GWP Standard. The detections exceeding standards are as follows: MW-17R ♦1,1-Dicholoroethane at 6.0 µg/L. 2L Standard is 6 µg/L. ♦Benzene detected at 5.0 µg/L. 2L Standard is 1 µg/L. ♦Methylene Chloride detected at 52 µg/L. 2L Standard is 5 µg/L. Alternate Source Demonstration Lincoln County C&D Landfill Permit #55-03 Crouse, North Carolina S&ME Project No. 7235-14-019 March 11, 2016 8 ♦Tetrachloroethane detected at 0.87 J µg/L. 2L Standard is 0.7 µg/L. ♦Vinyl Chloride detected at 0.72 J µg/L. 2L Standard is 0.03 µg/L. MW-28 ♦Tetrachloroethane detected at 8.4 µg/L. 2L Standard is 0.7 µg/L. ♦Vinyl Chloride detected at 1.1 µg/L. 2L Standard is 0.03 µg/L. MW-37 ♦Methylene Chloride detected at 5.8 µg/L. 2L Standard is 5 µg/L. ♦Tetrachloroethane detected at 0.93 J µg/L. 2L Standard is 0.7 µg/L. OW-4A ♦Tetrachloroethane detected at 9.3 µg/L. 2L Standard is 0.7 µg/L. ♦Vinyl Chloride detected at 0.76 J µg/L. 2L Standard is 0.03 µg/L. OW-16 ♦1,4-Dicholorbenzene detected at 9.2 µg/L. 2L Standard is 6 µg/L. ♦Benzene detected at 8.5 µg/L. 2L Standard is 1 µg/L. ♦Methylene Chloride detected at 11 µg/L. 2L Standard is 5 µg/L. ♦Tetrachloroethane detected at 4.8 µg/L. 2L Standard is 0.7 µg/L. ♦Trichloroethene detected at 3.6 µg/L. 2L Standard is 3 µg/L. ♦Vinyl Chloride detected at 1.4 µg/L. 2L Standard is 0.03 µg/L. Singular detections of Tetrachloroethene exceeding its respective 2L Standard of 0.7 µg/L were found in the following monitoring wells: ♦MW-17 at 2.2 µg/L, and ♦OW-1 at 1.8 µg/L. Inorganic Constituents (Metals) Twelve (12) Appendix I metals were detected in the wells sampled, five (5) of which were detected above their respective 2L Standard or SW GWP Standard: Chromium, Lead, Nickel, Thallium, and Vanadium. ♦Chromium was detected above its 2L Standard of 10 µg/L in groundwater monitoring well OW-1 at a concentration of 58.2 µg/L. ♦Lead was detected above its 2L Standard of 15.8 µg/L in groundwater monitoring well OW-1 at a concentration of 31.8 µg/L. ♦Nickel was detected above its 2L Standard of 100 µg/L in groundwater monitoring well OW-1 at a concentration of 181 µg/L. ♦Thallium was detected above its SW GWP Standard of 0.28 µg/L in groundwater monitoring wells MW-17R, OW-1, and OW-16 at concentrations of 0.315 J µg/L, 0.890 J µg/L and 0.590 J µg/L, respectively. Alternate Source Demonstration Lincoln County C&D Landfill Permit #55-03 Crouse, North Carolina S&ME Project No. 7235-14-019 March 11, 2016 9 ♦Vanadium was detected above its SW GWP Standard of 0.3 µg/L in groundwater monitoring wells MW-17R, MW-37, OW-1, OW-4A, and OW-16 at concentrations ranging from 2.17 J µg/L to 29.1 µg/L. 4.4 July 2014 Summary of Results Based on the laboratory analytical reports, six (6) VOCs and five (5) metals were detected above their respective 2L Standard or SW GWP Standard during the July 2014 monitoring event. Results are summarized in Table 8 in Appendix II. Volatile Organic Compounds (VOCs) Monitoring wells MW-17, MW-17R, and OW-16 had multiple detections of VOCs above their respective 2L or SW GWP Standard. The detections exceeding standards are as follows: MW-17 ♦Tetrachloroethane detected at 2.2 µg/L. 2L Standard is 0.7 µg/L. ♦Vinyl Chloride detected at 0.90 J µg/L. 2L Standard is 0.03 µg/L. MW-17R ♦1,2-Dichloroethane detected at 0.48 J µg/L. 2L Standard is 0.4 µg/L. ♦Benzene detected at 5.8 µg/L. 2L Standard is 1 µg/L. ♦Methylene Chloride detected at 48 µg/L. 2L Standard is 5 µg/L. ♦Vinyl Chloride detected at 0.68 J µg/L. 2L Standard is 0.03 µg/L. OW-16 ♦1,2-Dichloroethane detected at 0.69 J. 2L Standard is 0.4 J µg/L. ♦1,4-Dichlorbenzene detected at 11 µg/L. 2L Standard is 6 µg/L. ♦Benzene detected at 10 µg/L. 2L Standard is 1 µg/L. ♦Tetrachloroethane detected at 4.2 µg/L. 2L Standard is 0.7 µg/L. ♦Trichloroethene detected at 3.5 µg/L. 2L Standard is 3 µg/L. ♦Vinyl Chloride detected at 1.5 µg/L. 2L Standard is 0.03 µg/L. Singular detections of Tetrachloroethene exceeding its respective 2L Standard of 0.7 µg/L were found in the following monitoring wells: ♦MW-28 at 0.99 J µg/L, and ♦OW-4A at 5.6 µg/L. Inorganic Constituents (Metals) Seven (7) constituents were detected above their respective 2L Standard or SW GWP Standard: Barium, Chromium, Cobalt, Lead, Nickel, Thallium and Vanadium. Alternate Source Demonstration Lincoln County C&D Landfill Permit #55-03 Crouse, North Carolina S&ME Project No. 7235-14-019 March 11, 2016 10 ♦Barium was detected above its 2L Standard of 700 µg/L in groundwater monitoring well OW-1 at a concentration of 1,070 µg/L. ♦Chromium was detected above its 2L Standard of 10 µg/L in groundwater monitoring wells MW- 17R, MW-37, OW-1, and OW-16 at concentrations ranging from 14.8 µg/L to 226 µg/L. ♦Cobalt was detected above its SW GWP Standard of 10 µg/L in groundwater monitoring well OW- 1 at a concentration of 75.2 µg/L. ♦Lead was detected above its 2L Standard of 15µg/L in groundwater monitoring wells OW-1 and OW-16 at concentrations of 71 µg/L and 15.6 µg/L, respectively. ♦Nickel was detected above its respective 2L Standard of 100 µg/L in groundwater monitoring well OW-1 at a concentration of 278 µg/L. ♦Thallium was detected above its respective SW GWP Standard of 0.28 µg/L in groundwater monitoring wells MW-17R, OW-1 and OW-16 at concentrations of 0.683 J, 2.81 JD, and 1.11 J respectively. ♦Vanadium was detected above its SW GWP Standard of 0.3 µg/L in groundwater monitoring wells MW-17R and OW-1 at concentrations of 58.1 µg/L and 126 µg/L, respectively. 5.0 Conclusions Historically PCE has been detected in groundwater monitoring wells MW-13, MW-14, MW-17, MW-19, MW-20 and MW-28. Each of these wells are located hydraulically down or side gradient of the unlined “Area E” landfill. A summary of historical concentrations of PCE detected in on-site monitoring wells is included in Appendix IV for reference. Concentrations of PCE within the groundwater monitoring wells began being detected in monitoring well MW-13 beginning in April 1996, but for the remaining wells detected concentrations of PCE began during or after the October 2005 sampling event when detection limits were lowered. Monitoring wells MW-13, MW-19, and MW-28 have the most consistent detections, while MW-14, MW-17, and MW-20 vary from non-detect to detect. Detected concentrations of PCE range on site from 0.43 µg/L to 8.2 µg/L. The majority of which exceed the 2L standard of 0.7 µg/L. The highest concentrations have most recently been detected in MW-28. The specific subset of wells sampled during this study referred to as the “buffer area” wells each had detections of PCE during the four groundwater monitoring events except for MW-37. MW-37 did not have a detection during the April 2014 sampling event. Concentrations of PCE in the “buffer area” wells ranged from 0.42 µg/L (MW-37) to 9.3 µg/L (OW-4A). The majority of concentrations exceed the 2L Standard, with the highest concentrations in MW-28 and its nested deep well OW-4A. The “buffer area” wells not only contained concentrations of PCE, but also twelve other volatile organic compounds, some of which were above their respective 2L or SW GWP Standards as discussed in Section 4.0. These volatile organic compounds are the same constituents that are consistently detected in the “Area E” monitoring wells during semi-annual monitoring events. The data collected and analyzed during the study provide the following information: Alternate Source Demonstration Lincoln County C&D Landfill Permit #55-03 Crouse, North Carolina S&ME Project No. 7235-14-019 March 11, 2016 11 ♦Groundwater flow directions on site indicate that the buffer area and C&D landfill receive a partial amount of flow from beneath Area “E”; ♦MW-28 is located hydraulically up-gradient from the C&D Landfill; ♦PCE has been historically detected downgradient and side gradient of “Area E”; ♦PCE was detected in each of the “buffer area” wells sampled during this study; and ♦VOCs typically detected in the “Area E” monitoring wells were also detected in the “buffer area” wells. Given the data collected during this demonstration, it appears that the PCE concentrations present in groundwater monitoring well MW-28 are associated with migration of contaminants from the unlined “Area E” landfill and not from the C&D Landfill. Appendices Appendix I –Figures MW-37871.14 NDMW-17R864.80 0.69 J OW-1876.491.8 ug/l MW-17 865.671.2 ug/l OW-16872.944.8 ug/l OW-4A871.385.4 ug/l MW-28871.666.6 ug/l MW-13840.863.4 ug/l MW-12 MW-18837.65ND MW-19836.231.6 ug/l MW-14841.07ND MW-20845.39ND MW-29842.56ND MW-30837.37ND MW-31850.83ND MW-26858.83ND MW-27863.69ND MW-1A889.55ND MW-16R862.89ND 896892 888 8 8 4 9 0 8 9 0 4 9 1 2 9 1 6 8 7 6872 9 2 4 8 6 8 864 8 5 6 8 52 9 2 8 9 3 2848 9 3 6 8 4 4 8 3 6 8 3 2 8 2 8 824 868 8 9 2 936 896 9 1 2 932 916 9 2 4 9 2 4 912 8 8 8 9 0 4 8 5 6 904 9 0 8 9 2 4 9 1 6 9 1 6 8 9 2 8 8 4 9 2 4 92 8 C R O U S E R D S H O A L R D B U F F E R A R E A W E L L S A P R I L 2 0 1 4 G R O U N D W A T E R E L E V A T I O N S A N D P C E C O N C E N T R A I O N S (u g /L ) L I N C O L N C O U N T Y L A N D F I L L C R O U S E , N O R T H C A R O L I N A 1 7 2 3 5 -1 4 -0 1 9 S J T 0 3 .1 1 .2 0 1 6 J P R FIGURE NO. S C A L E : P R O J E C T N O . D A T E : D R A W N B Y : C H E C K E D B Y : W W W .S M E I N C .C O M REFERENCE:THE 15A 2CAC 2L STANDARD FOR PCE IS 0.7 ug/L. GROUNDWATER ELEVATIONS AND ANALYTICAL SAMPLES WERE COLLECTED ON 4/15/2014.GROUNDWATER ELEVATIONS ARE FEET MEAN SEA LEVEL. PLEASE NOTE THIS MAP IS FOR INFORMATIONAL PURPOSES ONLY. IT IS NOT MEANT FORDESIGN, LEGAL, OR ANY OTHER USES. THERE ARE NO GUARANTEES ABOUT ITS ACCURACY. S&ME, INC. ASSUMES NO RESPONSIBILITY FOR ANYDECISION MADE OR ANY ACTIONS TAKEN BY THE USER BASED UPON THIS INFORMATION. 0 200 400 Feet ± 1 " = 2 0 0 ' F -0 1 7 6 E N G I N E E R I N G L I C E N S E N O . Q :\7 2 3 5 \1 4 \0 1 9 L C L F C &D A s s e s s m e n t \A p r i l 2 0 1 4 .m x d AREA E - UNLINED MUNICIPAL SOLID WASTE AREA (CLOSED/INACTIVE) CONSTRUCTION AND DEMOLITION LANDFILL (ACTIVE) 8 8 5 8 8 0 8 7 5 8 7 0865 8 6 0 8 5 5 8 4 5840 8 5 0 8 8 5 880 8 7 5 870 8 6 5 8 6 0 8 5 5 850 845840 Legend Groundwater Elevation Contours April 2014Trails and On-Site Gravel Roads Water Features 4' Contours Area E - Unlined Municipal Solid Waste Area (Closed/Inactive)Construction & Demolition LandfillProperty Boundary Roads Monitoring Well IDGroundwater Elevation (in feet)PCE Concentraion (in ug/L)Buffer Area Well IDGroundwater Elevation (in feet)PCE Concentration (in ug/L) Groundwater Flow Direction OW-1 876.66 1.2 ug/l MW-17 866.06 1.3 ug/l OW-16 873.05 4.3 ug/l OW-4A 871.50 5.2 ug/lMW-28 871.77 7.1 J ug/l MW-37 871.34 0.42 J ug/lMW-17R 864.94 0.68 J ug/l MW-12 MW-18 MW-19 MW-13MW-14 MW-20 MW-29 MW-30 MW-31 MW-26 MW-27 MW-1A MW-16R 896892 888 8 8 4 9 0 8 9 0 4 9 1 2 9 1 6 8 7 6872 9 2 4 8 6 8 864 85 6 85 2 9 2 8 9 3 2848 9 3 6 8 4 4 8 3 6 8 3 2 8 2 8 824 868 8 9 2 936 896 9 1 2 932 916 9 2 4 9 2 4 912 8 8 8 9 0 4 8 5 6 904 9 0 8 9 2 4 9 1 6 9 1 6 8 9 2 8 8 4 9 2 4 9 2 8 C R O U S E R D S H O A L R D B U F F E R A R E A W E L L S M A Y 2 0 1 4 G R O U N D W A T E R E L E V A T I O N S A N D P C E C O N C E N T R A I O N S (u g /L ) L I N C O L N C O U N T Y L A N D F I L L C R O U S E , N O R T H C A R O L I N A 2 7 2 3 5 -1 4 -0 1 9 S J T 0 3 .1 1 .2 0 1 6 J P R FIGURE NO. S C A L E : P R O J E C T N O . D A T E : D R A W N B Y : C H E C K E D B Y : W W W .S M E I N C .C O M REFERENCE:THE 15A 2CAC 2L STANDARD FOR PCE IS 0.7 ug/L. GROUNDWATER ELEVATIONS AND ANALYTICAL SAMPLES WERE COLLECTED ON 5/12/2014.GROUNDWATER ELEVATIONS ARE FEET MEAN SEA LEVEL. PLEASE NOTE THIS MAP IS FOR INFORMATIONAL PURPOSES ONLY. IT IS NOT MEANT FORDESIGN, LEGAL, OR ANY OTHER USES. THERE ARE NO GUARANTEES ABOUT ITS ACCURACY. S&ME, INC. ASSUMES NO RESPONSIBILITY FOR ANYDECISION MADE OR ANY ACTIONS TAKEN BY THE USER BASED UPON THIS INFORMATION. 0 200 400 Feet ± 1 " = 2 0 0 ' F -0 1 7 6 E N G I N E E R I N G L I C E N S E N O . Q :\7 2 3 5 \1 4 \0 1 9 L C L F C &D A s s e s s m e n t \M a y 2 0 1 4 .m x d AREA E - UNLINED MUNICIPAL SOLID WASTE AREA (CLOSED/INACTIVE) CONSTRUCTION AND DEMOLITION LANDFILL (ACTIVE) Legend Trails and On-Site Gravel Roads Water Features4' Contours Area E - Unlined Municipal Solid Waste Area (Closed/Inactive) Construction & Demolition Landfill Property Boundary Roads Buffer Area Well IDGroundwater Elevation (in feet)PCE Concentration (in ug/L) Monitoring Well ID OW-1 876.77 1.8 ug/l MW-17 865.58 2.2 ug/l OW-16 873.23 4.8 ug/l OW-4A 871.16 9.3 ug/l MW-28 871.77 8.4 ug/l MW-37 871.53 0.93 J ug/lMW-17R 865.12 0.87 J ug/l 896892 888 8 8 4 9 0 8 9 0 4 9 1 2 9 1 6 8 7 6872 9 2 4 8 6 8 864 85 6 85 2 9 2 8 9 3 2848 9 3 6 8 4 4 8 3 6 8 3 2 8 2 8 824 868 8 9 2 936 896 9 1 2 932 916 9 2 4 9 2 4 912 8 8 8 9 0 4 8 5 6 904 9 0 8 9 2 4 9 1 6 9 1 6 8 9 2 8 8 4 9 2 4 9 2 8 MW-12 MW-18 MW-19 MW-13MW-14 MW-20 MW-29 MW-30 MW-31 MW-26 MW-27 MW-1A MW-16R C R O U S E R D S H O A L R D B U F F E R A R E A W E L L S J U N E 2 0 1 4 G R O U N D W A T E R E L E V A T I O N S A N D P C E C O N C E N T R A I O N S (u g /L ) L I N C O L N C O U N T Y L A N D F I L L C R O U S E , N O R T H C A R O L I N A 3 7 2 3 5 -1 4 -0 1 9 S J T 0 3 .1 1 .2 0 1 6 J P R FIGURE NO. S C A L E : P R O J E C T N O . D A T E : D R A W N B Y : C H E C K E D B Y : W W W .S M E I N C .C O M REFERENCE:THE 15A 2CAC 2L STANDARD FOR PCE IS 0.7 ug/L. GROUNDWATER ELEVATIONS AND ANALYTICAL SAMPLES WERE COLLECTED ON 6/16/2014.GROUNDWATER ELEVATIONS ARE FEET MEAN SEA LEVEL PLEASE NOTE THIS MAP IS FOR INFORMATIONAL PURPOSES ONLY. IT IS NOT MEANT FORDESIGN, LEGAL, OR ANY OTHER USES. THERE ARE NO GUARANTEES ABOUT ITS ACCURACY. S&ME, INC. ASSUMES NO RESPONSIBILITY FOR ANYDECISION MADE OR ANY ACTIONS TAKEN BY THE USER BASED UPON THIS INFORMATION. 0 200 400 Feet ± 1 " = 2 0 0 ' F -0 1 7 6 E N G I N E E R I N G L I C E N S E N O . Q :\7 2 3 5 \1 4 \0 1 9 L C L F C &D A s s e s s m e n t \J u n e 2 0 1 4 .m x d AREA E - UNLINED MUNICIPAL SOLID WASTE AREA (CLOSED/INACTIVE) CONSTRUCTION AND DEMOLITION LANDFILL (ACTIVE) Legend Trails and On-Site Gravel Roads Water Features4' Contours Area E - Unlined Municipal Solid Waste Area (Closed/Inactive) Construction & Demolition Landfill Property Boundary Roads Buffer Area Well IDGroundwater Elevation (in feet)PCE Concentration (in ug/L) Monitoring Well ID MW-17 864.74 2.2 ug/l OW-16 870.05 4.2 ug/l OW-4A 870.57 5.6 ug/l OW-1 876.36 0.44 J ug/l MW-37 871.50 0.44 J ug/l MW-28 871.17 0.99 J ug/lMW-17R 864.88 0.63 J ug/l 896892 888 8 8 4 9 0 8 9 0 4 9 1 2 9 1 6 8 7 6872 9 2 4 8 6 8 864 85 6 85 2 9 2 8 9 3 2848 9 3 6 8 4 4 8 3 6 8 3 2 8 2 8 824 868 8 9 2 936 896 9 1 2 932 916 9 2 4 9 2 4 912 8 8 8 9 0 4 8 5 6 904 9 0 8 9 2 4 9 1 6 9 1 6 8 9 2 8 8 4 9 2 4 9 2 8 MW-12 MW-18 MW-19 MW-13MW-14 MW-20 MW-29 MW-30 MW-31 MW-26 MW-27 MW-1A MW-16R C R O U S E R D S H O A L R D B U F F E R A R E A W E L L S J U L Y 2 0 1 4 G R O U N D W A T E R E L E V A T I O N S A N D P C E C O N C E N T R A I O N S (u g /L ) L I N C O L N C O U N T Y L A N D F I L L C R O U S E , N O R T H C A R O L I N A 4 7 2 3 5 -1 4 -0 1 9 S J T 0 3 .1 1 .2 0 1 6 J P R FIGURE NO. S C A L E : P R O J E C T N O . D A T E : D R A W N B Y : C H E C K E D B Y : W W W .S M E I N C .C O M REFERENCE:THE 15A 2CAC 2L STANDARD FOR PCE IS 0.7 ug/L. GROUNDWATER ELEVATIONS AND ANALYTICAL SAMPLES WERE COLLECTED ON 7/16/2014.GROUNDWATER ELEVATIONS ARE IN FEET MEAN SEA LEVEL. PLEASE NOTE THIS MAP IS FOR INFORMATIONAL PURPOSES ONLY. IT IS NOT MEANT FORDESIGN, LEGAL, OR ANY OTHER USES. THERE ARE NO GUARANTEES ABOUT ITS ACCURACY. S&ME, INC. ASSUMES NO RESPONSIBILITY FOR ANYDECISION MADE OR ANY ACTIONS TAKEN BY THE USER BASED UPON THIS INFORMATION. 0 200 400 Feet ± 1 " = 2 0 0 ' F -0 1 7 6 E N G I N E E R I N G L I C E N S E N O . Q :\7 2 3 5 \1 4 \0 1 9 L C L F C &D A s s e s s m e n t \J u l y 2 0 1 4 .m x d AREA E - UNLINED MUNICIPAL SOLID WASTE AREA (CLOSED/INACTIVE) CONSTRUCTION AND DEMOLITION LANDFILL (ACTIVE) Legend Trails and On-Site Gravel Roads Water Features4' Contours Area E - Unlined Municipal Solid Waste Area (Closed/Inactive) Construction & Demolition Landfill Property Boundary Roads Buffer Area Well IDGroundwater Elevation (in feet)PCE Concentration (in ug/L) Monitoring Well ID Appendix II –Tables Latitude Longitude Ground TOC (MM/DD/YY) MW-17 07/20/93 35.426255°-81.354866°898.14 899.64 0.0 to 20.0 20.0 to 35.0 0.0 to 16.0 16.0 to 18.0 18.0 to 45.5 - - - MW-17R 03/31/14 35.426203°-81.355175°903.90 906.10 0.0 to 32.5 32.5 to 47.5 0.0 to 28.5 28.5 to 30.5 30.5 to 48.0 Saprolite MW-28 04/01/99 35.427697°-81.354272°912.29 915.15 0.0 to 36.0 36.0 to 51.0 0.0 to 32.0 32.0 to 34.0 34.0 to 51.0 Saprolite MW-37 04/01/14 35.426911°-81.354913°914.87 917.15 0.0 to 40.0 40.0 to 55.0 0.0 to 35.0 35.0 to 37.5 37.5 to 55.5 Saprolite OW-1 - - -35.428933°-81.354337°911.26 914.27 - - -- - -- - -- - -- - -- - -- - -- - -- - -- - -- - - OW-4A - - -35.428027°-81.354681°912.30 915.12 - - -- - -- - -- - -- - -- - -- - -- - -- - -- - -- - - OW-16 - - -35.427701°-81.354285°911.25 913.55 - - -- - -- - -- - -- - -- - -- - -- - -- - -- - -- - - Notes: (ft-MSL)Feet Mean Sea Level 0.010 Slot 0.010-Inch Machine-Slotted PVC Pipe Sch. 40 Schedule 40 PVC Pipe (ft-bls)Feet Below Land Surface Neat Cement Cement Mixture without Bentonite - - -Not Available TOC Top of Casing #2 Filter Sand Medium to Fine Grained Silica Sand Ground Ground Surface Bentonite Bentonite Pellets Table 1 Well Construction Summary Lincoln County Landfill Alternate Source Demonstration S&ME Project No: 7235-14-019 GPS Coordinates Survey Elevations Casing Interval Screen Interval Geology in Screen Interval(ft-bls)(ft-bls)(ft-bls)(ft-bls) #2 Filter Sand Grout Interval Seal Interval Filter Pack Interval Neat Cement BentoniteWell ID Install Date (decimal degrees)(ft-MSL) 2-inch, SCH. 40, PVC 2-inch, 0.010 Slot, PVC (ft-bls) Ground TOC DTW - TOC GW ELEV.DTW - TOC GW ELEV.DTW - TOC GW ELEV.DTW - TOC GW ELEV. (ft)(ft-MSL)(ft)(ft-MSL)(ft)(ft-MSL)(ft)(ft-MSL) MW-17 898.14 899.64 33.97 865.67 33.58 866.06 34.06 865.58 34.90 864.74 MW-17R 903.90 906.10 41.3 864.80 41.16 864.94 40.98 865.12 41.22 864.88 MW-28 912.29 915.15 43.49 871.66 43.38 871.77 43.38 871.77 43.98 871.17 MW-37 914.87 917.15 46.01 871.14 45.81 871.34 45.62 871.53 45.65 871.50 OW-1 911.26 914.27 37.78 876.49 37.61 876.66 37.5 876.77 37.91 876.36 OW-4A 912.30 915.12 43.74 871.38 43.62 871.50 43.96 871.16 44.55 870.57 OW-16 911.25 913.55 46.01 867.54 40.50 873.05 40.32 873.23 43.50 870.05 Notes: (ft-MSL)Feet Mean Sea Level DTW Depth to Water (ft)Feet GW ELEV.Groundwater Elevation TOC Top of Casing Ground Ground Surface (ft-MSL) Table 2 Water Level Data Summary Lincoln County Landfill Alternate Source Demonstration S&ME Project No: 7235-14-019 Well ID April 2014 May 2014 June 2014 July 2014Survey Elevations K n I v I v I v I v Well Hydraulic Cond.Eff. Porosity Gradient Flow Velocity Gradient Flow Velocity Gradient Flow Velocity Gradient Flow Velocity ID (ft/day)(ne)(ft/ft)(ft/yr)(ft/ft)(ft/yr)(ft/ft)(ft/yr)(ft/ft)(ft/yr) MW-17 1.4E+00 17%0.01 37 0.01 35 0.01 38 0.01 41 MW-17R 2.1E+00 22%0.03 112 0.03 87 0.03 87 0.03 90 MW-28 2.6E-01 22%0.01 5 0.01 5 0.01 4 0.01 4 MW-37 1.7E-01 21%0.008 2 0.01 2 0.01 3 0.01 2 OW-1 - - -- - -- - -- - -- - -- - -- - -- - -- - -- - - OW-4A 5.1E-02 5%0.01 4 0.01 4 0.01 4 0.01 4 OW-16 1.2E+00 22%0.01 21 0.01 93 0.01 21 0 37 Notes: (3) flow velocity v = (K*i)/ne- - -Not Available (ft/ft)Feet per feet (ft/yr)Feet per year (1) Hydraulic Conductivity was estimated from slug tests performed during this study. Please note that OW-1 and MW-17 were not tested due to lack of suffient water column. The value from MW-17 used was from historical data. (2) Effective porosity was estimated from soils collected within the saturated portion of screen interval during well construction, or estimated based on bedrock type and fractures or similar soils. Table 3 Groundwater Flow Data Lincoln County Landfill Alternate Source Demonstration S&ME Project No: 7235-14-019 June 2014 July 2014April 2014 May 2014 Well ID DTW TOC (ft-bls)pH Temp (°C)Conductance (μS) MW-17 33.97 5.63 16.6 65 MW-17R 41.30 5.46 17.1 72 MW-28 43.49 5.28 16.8 32 MW-37 46.01 5.98 18.3 57 OW-1 37.78 6.03 16.7 135 OW-4A 43.74 5.86 16.9 22 OW-16 46.01 5.47 17.7 87 MW-17 33.58 5.08 17.7 54 MW-17R 41.16 4.86 19.1 57 MW-28 43.38 4.73 18.5 28 MW-37 45.81 5.47 20.6 26 OW-1 37.61 5.72 19.6 165 OW-4A 43.62 5.47 21.5 24 OW-16 40.50 4.90 19.1 93 MW-17 34.06 5.21 18.2 109 MW-17R 40.98 4.73 18.3 59 MW-28 43.38 4.69 20.2 28 MW-37 45.62 5.22 19.9 41 OW-1 37.50 5.90 19.2 240 OW-4A 43.96 5.17 18.8 22 OW-16 40.32 4.90 19.7 108 MW-17 34.90 5.64 16.9 93 MW-17R 41.22 5.37 17.9 57 MW-28 43.98 5.30 17.5 33 MW-37 45.65 5.88 19.5 31 OW-1 37.91 6.21 17.7 218 OW-4A 44.55 5.76 17.8 23 OW-16 43.50 5.47 18.2 119 Notes: °C degrees celcius μS micro siemems DTW Depth to Water TOC Top of Casing ft-bls feet below land surface Table 4 Field Parameters in Monitoring Wells Lincoln County Landfill Alternate Source Demonstration S&ME Project No. 7235-14-019 June, 2014 July, 2014 April, 2014 May, 2014 EPA Appendix I Volatile Organic Compounds Method 8260 (ug/L) NCDENR SWSL 15A NCAC 2L Soild Waste GWP ST MW-17 MW-17R MW-28 MW-37 OW-1 OW-4A OW-16 1,1-Dichloroethane 5 6 NE 1.2 J 5.7 0.71 J 4.1 J 1,2-Dichloroethane 1 0.4 NE 0.48 J 0.57 J 1,2-Dichlorobenzene 5 20 NE 1.0 J 1,4-Dichlorobenzene 1 6 NE 2.2 7.2 cis-1,2,-Dichloroethene 5 70 NE 2.6 J 0.88 J 13 Acetone 100 6000 NE 69 J 14 J 320 53 J Benzene 1 1 NE 4.7 7.7 Methylene Chloride 1 5 NE 43 4.2 17 Tetrachloroethene 1 0.7 NE 1.2 0.69 J 6.6 1.8 5.4 4.8 Trichloroethene 1 3 NE 0.84 J 1.3 0.54 J 2.9 Trichlorofluoromethane 1 2000 NE 0.55 J 0.96 J 1.5 Vinyl chloride 1 0.03 NE 0.86 J Xylenes (total)5 500 NE 12 0.50 J 33 EPA Appendix I Metals Method 6010B/6020 (ug/L) Arsenic 10 10 NE 7.59 J Barium 100 700 NE 85.3 J 230 92.3 J 56.3 J 292 40.0 J 210 Beryllium 1 NE 4 0.342 J 1.08 0.210 J 0.841 J 0.467 J Cadmium 1 2 NE 0.736 J Chromium 10 10 NE 27.0 3.11 J 11.2 1.73 J Cobalt 10 NE 70 26.7 26.7 4.10 J 1.34 J 61.5 1.34 J 18.7 Copper 10 1000 NE 12.1 14.0 15.5 1.75 J 1.72 J Iron 300 300 NE 56.8 J Lead 10 15 NE 5.69 J 14.6 Manganese 50 50 NE 87.8 Nickel 50 100 NE 30.7 J 19.7 J 5.67 J 3.49 J 168 2.58 J 19.8 J Thallium 5.5 NE 0.28 0.513 J 0.112 J 0.619 J 0.690 J Vanadium 25 NE 0.3 34.6 1.47 J 5.08 J 1.68 J Zinc 10 1000 NE 11.0 47.5 9.04 J 5.38 J 57.9 4.29 J 19.5 Table 5 April 2014 - Summary of Detected Analytes Lincoln County Landfill Alternate Source Demonstration S&ME Project No. 7235-14-019 EPA Appendix I Volatile Organic Compounds Method 8260 (ug/L) NCDENR SWSL 15A NCAC 2L Soild Waste GWP ST MW-17 MW-17R MW-28 MW-37 OW-1 OW-4A OW-16 1,1-Dichloroethane 5 6 NE 0.87 J 5.1 0.60 J 3.5 J 1,2-Dichlorobenzene 5 20 NE 1.3 J 1,4-Dichlorobenzene 1 6 NE 2.5 7.4 cis-1,2,-Dichloroethene 5 70 NE 3.0 J 0.63 J 13 Acetone 100 6000 NE 46 J 210 80 J Benzene 1 1 NE 4.8 6.8 Chlorobenzene 3 50 NE 0.51 J Methylene Chloride 1 5 NE 41 10 Tetrachloroethene 1 0.7 NE 1.3 0.68 J 7.1 0.42 J 1.2 5.2 4.3 Trichloroethene 1 3 NE 0.70 J 1.2 3 Trichlorofluoromethane 1 2000 NE 0.60 J 0.82 J Vinyl chloride 1 0.03 NE 0.43 J 0.44 J 0.87 J 0.83 J Xylenes (total)5 500 NE 0.66 J 15 1.6 J 37 EPA Appendix I Metals Method 6010B/6020 (ug/L) Antimony 6 NE 1.4 1.14 J Barium 100 700 NE 77.5 J 142 97.9 J 56.3 J 363 59.3 J 186 Beryllium 1 NE 4 0.377 J 0.394 J 0.196 J 1.81 0.401 J Chromium 10 10 NE 5.25 J 5.06 J 17.8 9.80 J 4.50 J Cobalt 10 NE 70 24.4 16.0 4.05 J 1.57 J 69.8 1.77 J 20.4 Copper 10 1000 NE 12.6 2.46 J 1.91 J 13.7 3.54 J 3.31 J Lead 10 15 NE 29.3 Nickel 50 100 NE 26.8 J 7.50 J 4.15 J 2.22 J 180 3.88 J 21.1 J Selenium 10 20 NE 1.87 J Thallium 5.5 NE 0.28 0.195 J 0.115 J 0.702 J 0.619 J Vanadium 25 NE 0.3 6.16 J 2.40 J 10.1 J 5.05 J 3.45 J Zinc 10 1000 NE 10.5 26.9 9.22 J 6.61 J 77.4 11.0 23.5 Table 6 May 2014 - Summary of Detected Analytes Lincoln County Landfill Alternate Source Demonstration S&ME Project No. 7235-14-019 EPA Appendix I Volatile Organic Compounds Method 8260 (ug/L) NCDENR SWSL 15A NCAC 2L Soild Waste GWP ST MW-17 MW-17R MW-28 MW-37 OW-1 OW-4A OW-16 1,1-Dichloroethane 5 6 NE 2.5 J 6.0 1.3 J 4.2 J 1,2-Dichlorobenzene 5 20 NE 1.9 J 1,4-Dichlorobenzene 1 6 NE 3.0 0.56 J 9.2 cis-1,2,-Dichloroethene 5 70 NE 3.0 J 1.5 J 14 Acetone 100 6000 NE 55 J 7.0 J 170 31 J Benzene 1 1 NE 0.46 J 5.0 8.5 Chlorobenzene 3 50 NE 0.71 J Methylene Chloride 1 5 NE 52 5.8 11 Tetrachloroethene 1 0.7 NE 2.2 0.87 J 8.4 0.93 J 1.8 9.3 4.8 Trichloroethene 1 3 NE 1.5 1.4 0.49 J 0.53 J 3.6 Trichlorofluoromethane 1 2000 NE 0.51 J 1.4 1.1 Vinyl chloride 1 0.03 NE 0.72 J 1.1 0.76 J 1.4 Xylenes (total)5 500 NE 15 4.9 J 48 EPA Appendix I Metals Method 6010B/6020 (ug/L) Antimony 6 NE 1.4 0.325 J 0.419 J 0.518 J Arsenic 10 10 NE 6.64 J Barium 100 700 NE 62.7 J 152 91.9 J 53.1 J 380 43.0 J 159 Beryllium 1 NE 4 0.282 J 0.544 J 0.207 J 0.102 J 1.45 0.426 J Chromium 10 10 NE 8.40 J 4.76 J 58.2 4.94 J Cobalt 10 NE 70 45.9 15.5 3.34 J 1.79 J 69.6 1.77 J 26.6 Copper 10 1000 NE 10.7 3.89 J 13.5 2.17 J Lead 10 15 NE 2.26 J 31.8 2.69 J Nickel 50 100 NE 51.1 8.46 J 3.39 J 2.06 J 181 27.7 J Thallium 5.5 NE 0.28 0.315 J 0.166 J 0.890 J 0.590 J Vanadium 25 NE 0.3 10.5 J 2.17 J 29.1 3.87 J Zinc 10 1000 NE 12.2 23.6 9.08 J 5.85 J 102 5.28 J 24.1 Table 7 June 2014 - Summary of Detected Analytes Lincoln County Landfill Alternate Source Demonstration S&ME Project No. 7235-14-019 EPA Appendix I Volatile Organic Compounds Method 8260 (ug/L) NCDENR SWSL 15A NCAC 2L Soild Waste GWP ST MW-17 MW-17R MW-28 MW-37 OW-1 OW-4A OW-16 1,1-Dichloroethane 5 6 NE 2.6 J 5.7 1.1 J 4.1 J 1,2-Dichloroethane 1 0.4 NE 0.48 J 0.69 J 1,2-Dichlorobenzene 5 20 NE 2.8 J 1,4-Dichlorobenzene 1 6 NE 3.1 11 cis-1,2,-Dichloroethene 5 70 NE 3.2 J 0.66 J 17 Acetone 100 6000 NE 42 J 56 J 63 J 29 J Benzene 1 1 NE 0.69 J 5.8 10 Chlorobenzene 3 50 NE 0.85 J Chloroethane 10 3000 NE 0.88 J 1.3 J Methylene Chloride 1 5 NE 48 3.0 2.3 Tetrachloroethene 1 0.7 NE 2.2 0.63 J 0.99 J 0.44 J 0.44 J 5.6 4.2 Toluene 1 600 NE 0.52 J Trichloroethene 1 3 NE 1.7 1.3 3.5 Vinyl chloride 1 0.03 NE 0.90 J 0.68 J 1.5 Xylenes (total)5 500 NE 14 1.7 J 62 EPA Appendix I Metals Method 6010B/6020 (ug/L) Antimony 6 NE 1.4 0.618 J 0.291 J 0.842 J Arsenic 10 10 NE 6.88 J Barium 100 700 NE 81.7 J 263 96.1 J 94.1 J 1070 66.2 J 286 Beryllium 1 NE 4 0.451 J 1.91 0.268 J 0.184 J 3.74 0.171 J 0.703 J Chromium 10 10 NE 45.1 14.8 226 5.23 J 46.6 Cobalt 10 NE 70 41.8 30.6 3.16 J 3.04 J 75.2 2.17 J 42.7 Copper 10 1000 NE 6.62 J 21.2 2.54 J 39.8 2.59 J 11.7 Lead 10 15 NE 9.65 J 71.0 15.6 Nickel 50 100 NE 44.6 J 26.3 J 3.42 J 6.11 J 278 3.86 J 59.6 Thallium 5.5 NE 0.28 0.683 J 0.119 J 2.81 JD 0.112 J 1.11 J Vanadium 25 NE 0.3 58.1 9.96 J 126 4.72 J 33.2 Zinc 10 1000 NE 14.1 69.1 10.3 18.6 281 10.5 75.5 Table 8 July 2014 - Summary of Detected Analytes Lincoln County Landfill Alternate Source Demonstration S&ME Project No. 7235-14-019 Appendix III – Boring Logs and Well Construction Records Appendix IV – Soil Porosity Calculations Appendix V – Slug Test Data Sheets Appendix VI – Field Well Sampling Logs and Analytical Data Reports Project Name: Lincoln County Landfill Project Location: Crouse, North Carolina Project Number: 7235-14-019 Well ID MW-17 Sampling Personnel (1) Jasmine Tayouga (2) Courtney Murphy Weather Conditions Unusual Site Conditions Water Level Data Measuring Point Location Well Casing Volume Depth to Water (ft) Depth to Base of Well (ft) (well casing volume = water column*0.164) Water Column (ft) Equipment Used to Measure Depths Well Purging Data Date 4/15/2014 Purging Equipment Total Voume (Gal) Time pH Temp (C)Conductance (µS) Initial 0 12:21 5.59 17.0 0.40 12:22 5.63 16.8 0.80 12:23 5.64 16.7 Final Dry at 1.0 gal 12:25 5.63 16.6 Well Sampling Data Sampling Date Sampling Time Sampling Equipment Sample Observations Analytical Data Method Container Type and No. Preservation Appendix I VOCs (3) 40 mL glass vials Appendix I Metals (1) 500 mL plastic bottle Comments Lab 75 Approx. 55°F, rainy, windy TOC 0.41 33.97 36.50 2.53 Electric Water Level Probe Disposable Teflon Bailer 72 HCL HNO3 ENCO 68 65 4/16/2014 10:40 disposable teflon bailer Clear Project Name: Lincoln County Landfill Project Location: Crouse, North Carolina Project Number: 7235-14-019 Well ID MW-28 Sampling Personnel (1) Jasmine Tayouga (2) Courtney Murphy Weather Conditions Unusual Site Conditions Water Level Data Measuring Point Location Well Casing Volume Depth to Water (ft) Depth to Base of Well (ft) (well casing volume = water column*0.164) Water Column (ft) Equipment Used to Measure Depths Well Purging Data Date 4/15/2014 Purging Equipment Total Voume (Gal) Time pH Temp (C)Conductance (µS) Initial 0 16:14 5.28 16.5 1.8 16:18 5.28 16.7 3.6 16:22 5.28 16.8 Final 5.4 16:26 5.28 16.8 Well Sampling Data Sampling Date Sampling Time Sampling Equipment Sample Observations Analytical Data Method Container Type and No. Preservation Appendix I VOCs & THF (3) 40 mL glass vials Appendix I Metals + Hg, Mn, Fe (1) 250 mL plastic bottle Comments Lab 43.49 Approx. 55°F, rainy, windy TOC 1.8 Clear 54.50 11.11 Electric Water Level Probe Disposable Teflon Bailer 40 37 34 32 4/16/2014 11:35 disposable teflon bailer ENCO HCL HNO3 Alkalinity/TDS/ Chloride/Sulfate (1) 250 mL plastic bottle None Project Name: Lincoln County Landfill Project Location: Crouse, North Carolina Project Number: 7235-14-019 Well ID OW-1 Sampling Personnel (1) Jasmine Tayouga (2) Courtney Murphy Weather Conditions Unusual Site Conditions Water Level Data Measuring Point Location Well Casing Volume Depth to Water (ft) Depth to Base of Well (ft) (well casing volume = water column*0.164) Water Column (ft) Equipment Used to Measure Depths Well Purging Data Date 4/15/2014 Purging Equipment Total Voume (Gal) Time pH Temp (C)Conductance (µS) Initial 0 15:42 5.99 16.8 Dry at 0.5 gal 15:44 6.03 16.7 Final Well Sampling Data Sampling Date Sampling Time Sampling Equipment Sample Observations Analytical Data Method Container Type and No. Preservation Appendix I VOCs (3) 40 mL glass vials Appendix I Metals (1) 250 mL plastic bottle Comments Lab 135 Approx. 55°F, rainy, windy TOC 0.36 37.78 40.00 2.22 Electric Water Level Probe Disposable Teflon Bailer 162 HCL HNO3 Needs a lock, white floating material in water (similar to MW-29) ENCO 4/16/2014 11:50 disposable teflon bailer Slightly turbid Project Name: Lincoln County Landfill Project Location: Crouse, North Carolina Project Number: 7235-14-019 Well ID OW-4A Sampling Personnel (1) Jasmine Tayouga (2) Courtney Murphy Weather Conditions Unusual Site Conditions Water Level Data Measuring Point Location Well Casing Volume Depth to Water (ft) Depth to Base of Well (ft) (well casing volume = water column*0.164) Water Column (ft) Equipment Used to Measure Depths Well Purging Data Date 4/15/2014 Purging Equipment Total Voume (Gal) Time pH Temp (C)Conductance (µS) Initial 0 16:15 5.83 15.8 4.5 16:19 5.79 16.7 7.0 16:23 6.00 16.5 Final 9.0 16:27 5.86 16.9 *Dry at 7 gal, let recharge, reading taken at 9 gal (recharge was very slow) Well Sampling Data Sampling Date Sampling Time Sampling Equipment Sample Observations Analytical Data Method Container Type and No. Preservation Appendix I VOCs (3) 40 mL glass vials Appendix I Metals (1) 250 mL plastic bottle Comments Lab 24 Approx. 55°F, rainy, windy TOC 4.47 43.74 71.00 27.26 Electric Water Level Probe Field-Cleaned Typhoon Pump 22 HCL HNO3 Needs a lock ENCO 24 22 4/16/2014 11:30 disposable teflon bailer Clear Project Name: Lincoln County Landfill Project Location: Crouse, North Carolina Project Number: 7235-14-019 Well ID OW-16 Sampling Personnel (1) Jasmine Tayouga (2) Courtney Murphy Weather Conditions Unusual Site Conditions Water Level Data Measuring Point Location Well Casing Volume Depth to Water (ft) Depth to Base of Well (ft) (well casing volume = water column*0.164) Water Column (ft) Equipment Used to Measure Depths Well Purging Data Date 4/15/2014 Purging Equipment Total Voume (Gal) Time pH Temp (C)Conductance (µS) Initial 0 16:35 5.40 17.3 0.7 16:37 5.42 17.8 1.4 16:41 5.43 17.7 Final 2.1 16:43 5.47 17.7 Well Sampling Data Sampling Date Sampling Time Sampling Equipment Sample Observations Analytical Data Method Container Type and No. Preservation Appendix I VOCs (3) 40 mL glass vials Appendix I Metals (1) 250 mL plastic bottle Comments Lab 80 Approx. 55°F, rainy, windy TOC 0.72 40.61 45.00 4.39 Electric Water Level Probe Disposable Teflon Bailer 75 HCL HNO3 Needs a lock ENCO 81 87 4/16/2014 11:45 disposable teflon bailer Clear Project Name: Lincoln County Landfill Project Location: Crouse, North Carolina Project Number: 7235-14-019 Well ID MW-17R Sampling Personnel (1) Jasmine Tayouga (2) Courtney Murphy Weather Conditions Unusual Site Conditions Water Level Data Measuring Point Location Well Casing Volume Depth to Water (ft) Depth to Base of Well (ft) (well casing volume = water column*0.164) Water Column (ft) Equipment Used to Measure Depths Well Purging Data Date 4/15/2014 Purging Equipment Total Voume (Gal) Time pH Temp (C)Conductance (µS) Initial 0 14:56 5.50 17.0 1.7 15.:00 5.52 17.1 3.4 15:04 5.47 17.0 Final 5.1 15:08 5.46 17.1 Well Sampling Data Sampling Date Sampling Time Sampling Equipment Sample Observations Analytical Data Method Container Type and No. Preservation Appendix I VOCs (3) 40 mL glass vials Appendix I Metals (1) 250 mL plastic bottle Comments Lab 79 Approx. 55°F, rainy, windy TOC 1.7 41.30 51.90 10.60 Electric Water Level Probe Disposable Teflon Bailer 70 HCL HNO3 Needs a lock ENCO 74 72 4/16/2014 10:20 disposable teflon bailer Slightly turbid Project Name: Lincoln County Landfill Project Location: Crouse, North Carolina Project Number: 7235-14-019 Well ID MW-37 Sampling Personnel (1) Jasmine Tayouga (2) Courtney Murphy Weather Conditions Unusual Site Conditions Water Level Data Measuring Point Location Well Casing Volume Depth to Water (ft) Depth to Base of Well (ft) (well casing volume = water column*0.164) Water Column (ft) Equipment Used to Measure Depths Well Purging Data Date 4/15/2014 Purging Equipment Total Voume (Gal) Time pH Temp (C)Conductance (µS) Initial 0 12:05 5.71 18.5 2.1 12:08 5.80 18.5 4.2 12:12 5.88 18.4 Final 6.3 12:14 5.98 18.3 Well Sampling Data Sampling Date Sampling Time Sampling Equipment Sample Observations Analytical Data Method Container Type and No. Preservation Appendix I VOCs (3) 40 mL glass vials Appendix I Metals (1) 250 mL plastic bottle Comments Lab 75 Approx. 55°F, rainy, windy TOC 2.1 46.01 59.00 12.99 Electric Water Level Probe Disposable Teflon Bailer 66 HCL HNO3 ENCO 70 57 4/16/2014 10:15 disposable teflon bailer Clear Project Name: Lincoln County Landfill C&D Assessment Project Location: Crouse, North Carolina Project Number: 7235-14-019 Well ID MW-17 Sampling Personnel (1) Jasmine Tayouga (2) Courtney Murphy Weather Conditions Unusual Site Conditions Water Level Data Measuring Point Location Well Casing Volume Depth to Water (ft) Depth to Base of Well (ft) (well casing volume = water column*0.164) Water Column (ft) Equipment Used to Measure Depths Well Purging Data Date 5/12/2014 Purging Equipment Total Voume (Gal) Time pH Temp (C)Conductance (µS) Initial 0 9:30 5.20 18.6 0.50 9:32 5.11 18.1 1.00 9:34 5.08 18.0 Final 1.50 9:36 5.08 17.7 Well Sampling Data Sampling Date Sampling Time Sampling Equipment Sample Observations Analytical Data Method Container Type and No. Preservation Appendix I VOCs (3) 40 mL glass vials Appendix I Metals (1) 500 mL plastic bottle Comments Lab 71 Sunny, approx. 85°F TOC 0.48 33.58 36.50 2.92 Electric Water Level Probe Disposable Teflon Bailer 69 HCL HNO3 ENCO 65 54 5/12/2014 11:55 disposable teflon bailer Clear Project Name: Lincoln County Landfill C&D Assessment Project Location: Crouse, North Carolina Project Number: 7235-14-019 Well ID MW-28 Sampling Personnel (1) Jasmine Tayouga (2) Courtney Murphy Weather Conditions Unusual Site Conditions Water Level Data Measuring Point Location Well Casing Volume Depth to Water (ft) Depth to Base of Well (ft) (well casing volume = water column*0.164) Water Column (ft) Equipment Used to Measure Depths Well Purging Data Date 4/15/2014 Purging Equipment Total Voume (Gal) Time pH Temp (C)Conductance (µS) Initial 0 10:31 4.66 19.3 1.8 10:33 4.68 18.8 3.6 10:35 4.71 19.2 Final 5.4 10:37 4.73 18.5 Well Sampling Data Sampling Date Sampling Time Sampling Equipment Sample Observations Analytical Data Method Container Type and No. Preservation Appendix I VOCs & THF (3) 40 mL glass vials Appendix I Metals + Hg, Mn, Fe (1) 250 mL plastic bottle Comments Lab 43.38 Sunny, approx. 85°F TOC 1.8 Clear 54.50 11.12 Electric Water Level Probe Disposable Teflon Bailer 33 37 26 28 5/12/2014 12:15 disposable teflon bailer ENCO HCL HNO3 Alkalinity/TDS/ Chloride/Sulfate (1) 250 mL plastic bottle None Project Name: Lincoln County Landfill C&D Assessment Project Location: Crouse, North Carolina Project Number: 7235-14-019 Well ID OW-1 Sampling Personnel (1) Jasmine Tayouga (2) Courtney Murphy Weather Conditions Unusual Site Conditions Water Level Data Measuring Point Location Well Casing Volume Depth to Water (ft) Depth to Base of Well (ft) (well casing volume = water column*0.164) Water Column (ft) Equipment Used to Measure Depths Well Purging Data Date 4/15/2014 Purging Equipment Total Voume (Gal) Time pH Temp (C)Conductance (µS) Initial 0 11:50 5.71 19.7 0.4 11:51 5.72 19.6 0.8 Final 1.5 *Dry at 0.5 gal Well Sampling Data Sampling Date Sampling Time Sampling Equipment Sample Observations Analytical Data Method Container Type and No. Preservation Appendix I VOCs (3) 40 mL glass vials Appendix I Metals (1) 250 mL plastic bottle Comments Lab 165 Sunny, approx. 85°F TOC 0.39 37.61 40.00 2.39 Electric Water Level Probe Disposable Teflon Bailer 183 HCL HNO3 ENCO 5/12/2014 12:30 disposable teflon bailer Turbid Project Name: Lincoln County Landfill C&D Assessment Project Location: Crouse, North Carolina Project Number: 7235-14-019 Well ID OW-4A Sampling Personnel (1) Jasmine Tayouga (2) Courtney Murphy Weather Conditions Unusual Site Conditions Water Level Data Measuring Point Location Well Casing Volume Depth to Water (ft) Depth to Base of Well (ft) (well casing volume = water column*0.164) Water Column (ft) Equipment Used to Measure Depths Well Purging Data Date 5/12/2014 Purging Equipment Total Voume (Gal) Time pH Temp (C)Conductance (µS) Initial 0 10:29 5.32 22.2 4.5 10:38 5.37 19.2 9.0 10:59 5.41 20.9 Final 13.5 11:29 5.47 21.5 Well Sampling Data Sampling Date Sampling Time Sampling Equipment Sample Observations Analytical Data Method Container Type and No. Preservation Appendix I VOCs (3) 40 mL glass vials Appendix I Metals (1) 250 mL plastic bottle Comments Lab 21 Sunny, approx. 85°F TOC 4.50 43.62 71.00 27.38 Electric Water Level Probe Field-Cleaned Typhoon Pump 26 HCL HNO3 ENCO 22 24 5/12/2014 11:30 disposable teflon bailer Clear Project Name: Lincoln County Landfill C&D Assessment Project Location: Crouse, North Carolina Project Number: 7235-14-019 Well ID OW-16 Sampling Personnel (1) Jasmine Tayouga (2) Courtney Murphy Weather Conditions Unusual Site Conditions Water Level Data Measuring Point Location Well Casing Volume Depth to Water (ft) Depth to Base of Well (ft) (well casing volume = water column*0.164) Water Column (ft) Equipment Used to Measure Depths Well Purging Data Date 5/12/2014 Purging Equipment Total Voume (Gal) Time pH Temp (C)Conductance (µS) Initial 0 11:05 4.85 20.9 0.7 11:07 4.85 19.7 1.4 11:09 4.89 19.7 Final 2.1 11:11 4.90 19.1 Well Sampling Data Sampling Date Sampling Time Sampling Equipment Sample Observations Analytical Data Method Container Type and No. Preservation Appendix I VOCs (3) 40 mL glass vials Appendix I Metals (1) 250 mL plastic bottle Comments Lab 90 Sunny, approx. 85°F TOC 0.74 40.50 45.00 4.50 Electric Water Level Probe Disposable Teflon Bailer 75 HCL HNO3 ENCO 87 93 5/12/2014 12:25 disposable teflon bailer Clear Project Name: Lincoln County Landfill C&D Assessment Project Location: Crouse, North Carolina Project Number: 7235-14-019 Well ID MW-17R Sampling Personnel (1) Jasmine Tayouga (2) Courtney Murphy Weather Conditions Unusual Site Conditions Water Level Data Measuring Point Location Well Casing Volume Depth to Water (ft) Depth to Base of Well (ft) (well casing volume = water column*0.164) Water Column (ft) Equipment Used to Measure Depths Well Purging Data Date 5/12/2014 Purging Equipment Total Voume (Gal) Time pH Temp (C)Conductance (µS) Initial 0 9:43 4.87 19.5 1.8 9:47 4.84 19.5 3.6 9:51 4.89 19.7 Final 5.4 9:55 4.86 19.1 Well Sampling Data Sampling Date Sampling Time Sampling Equipment Sample Observations Analytical Data Method Container Type and No. Preservation Appendix I VOCs (3) 40 mL glass vials Appendix I Metals (1) 250 mL plastic bottle Comments Lab 58 Sunny, approx. 85°F TOC 1.8 41.16 51.90 10.74 Electric Water Level Probe Disposable Teflon Bailer 64 HCL HNO3 ENCO 52 57 5/12/2014 12:05 disposable teflon bailer Slightly turbid Project Name: Lincoln County Landfill C&D Assessment Project Location: Crouse, North Carolina Project Number: 7235-14-019 Well ID MW-37 Sampling Personnel (1) Jasmine Tayouga (2) Courtney Murphy Weather Conditions Unusual Site Conditions Water Level Data Measuring Point Location Well Casing Volume Depth to Water (ft) Depth to Base of Well (ft) (well casing volume = water column*0.164) Water Column (ft) Equipment Used to Measure Depths Well Purging Data Date 5/12/2014 Purging Equipment Total Voume (Gal) Time pH Temp (C)Conductance (µS) Initial 0 10:00 5.15 20.0 2.2 10:08 5.16 21.2 4.4 10:13 5.31 20.5 Final 6.6 10:18 5.47 20.6 Well Sampling Data Sampling Date Sampling Time Sampling Equipment Sample Observations Analytical Data Method Container Type and No. Preservation Appendix I VOCs (3) 40 mL glass vials Appendix I Metals (1) 250 mL plastic bottle Comments Lab 43 Sunny, approx. 85°F TOC 2.16 45.81 59.00 13.19 Electric Water Level Probe Disposable Teflon Bailer 29 HCL HNO3 ENCO 47 26 5/12/2014 12:10 disposable teflon bailer Clear Project Name: Lincoln County Landfill Project Location: Crouse, North Carolina Project Number: 7235-14-019 Well ID MW-17 Sampling Personnel (1) Jasmine Tayouga (2) Courtney Murphy Weather Conditions Unusual Site Conditions Water Level Data Measuring Point Location Well Casing Volume Depth to Water (ft) Depth to Base of Well (ft) (well casing volume = water column*0.164) Water Column (ft) Equipment Used to Measure Depths Well Purging Data Date 6/16/2014 Purging Equipment Total Voume (Gal) Time pH Temp (C)Conductance (µS) Initial 0 10:43 5.95 19.8 0.40 10:44 5.35 18.6 0.80 10:45 5.21 18.2 Final 1.20 * Dry at 0.8 gallons Well Sampling Data Sampling Date Sampling Time Sampling Equipment Sample Observations Analytical Data Method Container Type and No. Preservation Appendix I VOCs (3) 40 mL glass vials Appendix I Metals (1) 500 mL plastic bottle Comments Lab 112 Approx. 85°F, sunny/partly cloudy TOC 0.40 34.06 36.50 2.44 Electric Water Level Probe Disposable Teflon Bailer 75 HCL HNO3 ENCO 109 6/16/2014 13:25 disposable teflon bailer Clear Project Name: Lincoln County Landfill Project Location: Crouse, North Carolina Project Number: 7235-14-019 Well ID MW-28 Sampling Personnel (1) Jasmine Tayouga (2) Courtney Murphy Weather Conditions Unusual Site Conditions Water Level Data Measuring Point Location Well Casing Volume Depth to Water (ft) Depth to Base of Well (ft) (well casing volume = water column*0.164) Water Column (ft) Equipment Used to Measure Depths Well Purging Data Date 6/16/2014 Purging Equipment Total Voume (Gal) Time pH Temp (C)Conductance (µS) Initial 0 11:28 4.58 19.1 1.8 11:30 4.64 19.0 3.6 11:33 4.68 18.8 Final 5.4 11:36 4.69 20.2 Well Sampling Data Sampling Date Sampling Time Sampling Equipment Sample Observations Analytical Data Method Container Type and No. Preservation Appendix I VOCs & THF (3) 40 mL glass vials Appendix I Metals + Hg, Mn, Fe (1) 250 mL plastic bottle Comments Lab 43.38 Approx. 85°F, sunny/partly cloudy TOC 1.8 Clear 54.50 11.12 Electric Water Level Probe Disposable Teflon Bailer 33 31 29 28 6/16/2014 14:05 disposable teflon bailer ENCO HCL HNO3 Alkalinity/TDS/ Chloride/Sulfate (1) 250 mL plastic bottle None Project Name: Lincoln County Landfill Project Location: Crouse, North Carolina Project Number: 7235-14-019 Well ID OW-1 Sampling Personnel (1) Jasmine Tayouga (2) Courtney Murphy Weather Conditions Unusual Site Conditions Water Level Data Measuring Point Location Well Casing Volume Depth to Water (ft) Depth to Base of Well (ft) (well casing volume = water column*0.164) Water Column (ft) Equipment Used to Measure Depths Well Purging Data Date 6/16/2014 Purging Equipment Total Voume (Gal) Time pH Temp (C)Conductance (µS) Initial 0 12:02 5.79 20.4 0.4 12:04 5.90 19.2 Dry at 0.4 gal Final Well Sampling Data Sampling Date Sampling Time Sampling Equipment Sample Observations Analytical Data Method Container Type and No. Preservation Appendix I VOCs (3) 40 mL glass vials Appendix I Metals (1) 250 mL plastic bottle Comments Lab 240 Approx. 85°F, sunny/partly cloudy TOC 0.40 37.50 40.00 2.44 Electric Water Level Probe Disposable Teflon Bailer 246 HCL HNO3 white floating material in water ENCO 6/16/2014 13:45 disposable teflon bailer Slightly turbid Project Name: Lincoln County Landfill Project Location: Crouse, North Carolina Project Number: 7235-14-019 Well ID OW-4A Sampling Personnel (1) Jasmine Tayouga (2) Courtney Murphy Weather Conditions Unusual Site Conditions Water Level Data Measuring Point Location Well Casing Volume Depth to Water (ft) Depth to Base of Well (ft) (well casing volume = water column*0.164) Water Column (ft) Equipment Used to Measure Depths Well Purging Data Date 6/16/2014 Purging Equipment Total Voume (Gal) Time pH Temp (C)Conductance (µS) Initial 0 11:25 5.17 20.4 4.4 11:28 5.18 19.3 8.8 11:32 5.24 19.1 Final 13.2 11:36 5.17 18.8 Well Sampling Data Sampling Date Sampling Time Sampling Equipment Sample Observations Analytical Data Method Container Type and No. Preservation Appendix I VOCs (3) 40 mL glass vials Appendix I Metals (1) 250 mL plastic bottle Comments Lab 20 Approx. 85°F, sunny/partly cloudy TOC 4.40 43.96 71.00 27.04 Electric Water Level Probe Field-Cleaned Typhoon Pump 21 HCL HNO3 ENCO 20 22 6/16/2014 14:00 disposable teflon bailer Clear Project Name: Lincoln County Landfill Project Location: Crouse, North Carolina Project Number: 7235-14-019 Well ID OW-16 Sampling Personnel (1) Jasmine Tayouga (2) Courtney Murphy Weather Conditions Unusual Site Conditions Water Level Data Measuring Point Location Well Casing Volume Depth to Water (ft) Depth to Base of Well (ft) (well casing volume = water column*0.164) Water Column (ft) Equipment Used to Measure Depths Well Purging Data Date 6/16/2014 Purging Equipment Total Voume (Gal) Time pH Temp (C)Conductance (µS) Initial 0 11:52 5.12 21.8 0.8 11:54 4.87 19.9 1.6 11:56 4.84 19.6 Final 2.4 11:58 4.90 19.7 Well Sampling Data Sampling Date Sampling Time Sampling Equipment Sample Observations Analytical Data Method Container Type and No. Preservation Appendix I VOCs (3) 40 mL glass vials Appendix I Metals (1) 250 mL plastic bottle Comments Lab 107 Approx. 85°F, sunny/partly cloudy TOC 0.80 40.32 45.00 4.68 Electric Water Level Probe Disposable Teflon Bailer 110 HCL HNO3 ENCO 102 108 6/16/2014 13:50 disposable teflon bailer Clear Project Name: Lincoln County Landfill Project Location: Crouse, North Carolina Project Number: 7235-14-019 Well ID MW-17R Sampling Personnel (1) Jasmine Tayouga (2) Courtney Murphy Weather Conditions Unusual Site Conditions Water Level Data Measuring Point Location Well Casing Volume Depth to Water (ft) Depth to Base of Well (ft) (well casing volume = water column*0.164) Water Column (ft) Equipment Used to Measure Depths Well Purging Data Date 6/16/2014 Purging Equipment Total Voume (Gal) Time pH Temp (C)Conductance (µS) Initial 0 10:05 4.83 19.0 1.8 10:55 4.75 18.7 3.6 10:57 4.74 18.2 Final 5.4 10:59 4.73 18.3 Well Sampling Data Sampling Date Sampling Time Sampling Equipment Sample Observations Analytical Data Method Container Type and No. Preservation Appendix I VOCs (3) 40 mL glass vials Appendix I Metals (1) 250 mL plastic bottle Comments Lab 54 Approx. 85°F, sunny/partly cloudy TOC 1.8 40.98 51.90 10.92 Electric Water Level Probe Disposable Teflon Bailer 60 HCL HNO3 ENCO 52 59 6/16/2014 13:30 disposable teflon bailer Clear Project Name: Lincoln County Landfill Project Location: Crouse, North Carolina Project Number: 7235-14-019 Well ID MW-37 Sampling Personnel (1) Jasmine Tayouga (2) Courtney Murphy Weather Conditions Unusual Site Conditions Water Level Data Measuring Point Location Well Casing Volume Depth to Water (ft) Depth to Base of Well (ft) (well casing volume = water column*0.164) Water Column (ft) Equipment Used to Measure Depths Well Purging Data Date 6/16/2014 Purging Equipment Total Voume (Gal) Time pH Temp (C)Conductance (µS) Initial 0 11:05 5.15 19.7 2.2 11:08 5.09 20.3 4.4 11:11 5.13 20.0 Final 6.6 11:14 5.22 19.9 Well Sampling Data Sampling Date Sampling Time Sampling Equipment Sample Observations Analytical Data Method Container Type and No. Preservation Appendix I VOCs (3) 40 mL glass vials Appendix I Metals (1) 250 mL plastic bottle Comments Lab 32 Approx. 85°F, sunny/partly cloudy TOC 2.2 45.62 59.00 13.38 Electric Water Level Probe Disposable Teflon Bailer 35 HCL HNO3 ENCO 35 41 6/16/2014 13:40 disposable teflon bailer Clear Project Name: Lincoln County Landfill Project Location: Crouse, North Carolina Project Number: 7235-14-019 Well ID MW-17 Sampling Personnel (1) Jasmine Tayouga (2) Courtney Murphy Weather Conditions Unusual Site Conditions Water Level Data Measuring Point Location Well Casing Volume Depth to Water (ft) Depth to Base of Well (ft) (well casing volume = water column*0.164) Water Column (ft) Equipment Used to Measure Depths Well Purging Data Date 7/16/2014 Purging Equipment Total Voume (Gal) Time pH Temp (C)Conductance (µS) Initial 0 11:25 5.73 17.8 0.30 11:27 5.65 17.2 0.5* 11:29 5.64 16.9 Final * Dry at 0.5 gallons Well Sampling Data Sampling Date Sampling Time Sampling Equipment Sample Observations Analytical Data Method Container Type and No. Preservation Appendix I VOCs (3) 40 mL glass vials Appendix I Metals (1) 500 mL plastic bottle Comments Lab 97 Partly cloudy/approx. 80°F TOC 0.26 34.90 36.50 1.60 Electric Water Level Probe Disposable Teflon Bailer 111 HCL HNO3 ENCO 93 7/16/2014 11:40 disposable teflon bailer Clear Project Name: Lincoln County Landfill Project Location: Crouse, North Carolina Project Number: 7235-14-019 Well ID MW-28 Sampling Personnel (1) Jasmine Tayouga (2) Courtney Murphy Weather Conditions Unusual Site Conditions Water Level Data Measuring Point Location Well Casing Volume Depth to Water (ft) Depth to Base of Well (ft) (well casing volume = water column*0.164) Water Column (ft) Equipment Used to Measure Depths Well Purging Data Date 7/16/2014 Purging Equipment Total Voume (Gal) Time pH Temp (C)Conductance (µS) Initial 0 9:40 5.31 18.6 1.7 9:43 5.32 17.8 3.4 9:46 5.31 17.5 Final 5.1 9:49 5.30 17.5 Well Sampling Data Sampling Date Sampling Time Sampling Equipment Sample Observations Analytical Data Method Container Type and No. Preservation Appendix I VOCs & THF (3) 40 mL glass vials Appendix I Metals + Hg, Mn, Fe (1) 250 mL plastic bottle Comments Lab 43.98 Partly cloudy/approx. 80°F TOC 1.7 Clear 54.50 10.52 Electric Water Level Probe Disposable Teflon Bailer 32 31 31 33 7/16/2014 10:25 disposable teflon bailer ENCO HCL HNO3 Alkalinity/TDS/ Chloride/Sulfate (1) 250 mL plastic bottle None Project Name: Lincoln County Landfill Project Location: Crouse, North Carolina Project Number: 7235-14-019 Well ID OW-1 Sampling Personnel (1) Jasmine Tayouga (2) Courtney Murphy Weather Conditions Unusual Site Conditions Water Level Data Measuring Point Location Well Casing Volume Depth to Water (ft) Depth to Base of Well (ft) (well casing volume = water column*0.164) Water Column (ft) Equipment Used to Measure Depths Well Purging Data Date 7/16/2014 Purging Equipment Total Voume (Gal) Time pH Temp (C)Conductance (µS) Initial 0 11:15 6.15 17.7 0.3* 11:16 6.21 17.7 0.6 Final 0.9 * Dry at 0.3 gallons Well Sampling Data Sampling Date Sampling Time Sampling Equipment Sample Observations Analytical Data Method Container Type and No. Preservation Appendix I VOCs (3) 40 mL glass vials Appendix I Metals (1) 250 mL plastic bottle Comments Lab 218 Partly cloudy/approx. 80°F TOC 0.30 37.91 40.00 2.09 Electric Water Level Probe Disposable Teflon Bailer 227 HCL HNO3 ENCO 7/16/2014 11:30 disposable teflon bailer Moderately turbid Project Name: Lincoln County Landfill Project Location: Crouse, North Carolina Project Number: 7235-14-019 Well ID OW-4A Sampling Personnel (1) Jasmine Tayouga (2) Courtney Murphy Weather Conditions Unusual Site Conditions Water Level Data Measuring Point Location Well Casing Volume Depth to Water (ft) Depth to Base of Well (ft) (well casing volume = water column*0.164) Water Column (ft) Equipment Used to Measure Depths Well Purging Data Date 7/16/2014 Purging Equipment Total Voume (Gal) Time pH Temp (C)Conductance (µS) Initial 0 9:45 5.73 18.0 4.8 9:50 5.76 17.8 Final Well Sampling Data Sampling Date Sampling Time Sampling Equipment Sample Observations Analytical Data Method Container Type and No. Preservation Appendix I VOCs (3) 40 mL glass vials Appendix I Metals (1) 250 mL plastic bottle Comments Lab 23 Partly cloudy/approx. 80°F TOC 4.80 44.55 ~74 29.45 Electric Water Level Probe Field-Cleaned Typhoon Pump 21 HCL HNO3 ENCO 7/16/2014 10:40 disposable teflon bailer Clear Project Name: Lincoln County Landfill Project Location: Crouse, North Carolina Project Number: 7235-14-019 Well ID OW-16 Sampling Personnel (1) Jasmine Tayouga (2) Courtney Murphy Weather Conditions Unusual Site Conditions Water Level Data Measuring Point Location Well Casing Volume Depth to Water (ft) Depth to Base of Well (ft) (well casing volume = water column*0.164) Water Column (ft) Equipment Used to Measure Depths Well Purging Data Date 7/16/2014 Purging Equipment Total Voume (Gal) Time pH Temp (C)Conductance (µS) Initial 0 10:55 5.31 18.9 0.7 10:57 5.41 18.6 1.4 10:59 5.46 18.5 Final 2.1 11:01 5.47 18.2 Well Sampling Data Sampling Date Sampling Time Sampling Equipment Sample Observations Analytical Data Method Container Type and No. Preservation Appendix I VOCs (3) 40 mL glass vials Appendix I Metals (1) 250 mL plastic bottle Comments Lab 115 Partly cloudy/approx. 80°F TOC 0.70 43.50 48.00 4.50 Electric Water Level Probe Disposable Teflon Bailer 112 HCL HNO3 ENCO 115 119 7/16/2014 11:05 disposable teflon bailer Slightly turbid/mica visible Project Name: Lincoln County Landfill Project Location: Crouse, North Carolina Project Number: 7235-14-019 Well ID MW-17R Sampling Personnel (1) Jasmine Tayouga (2) Courtney Murphy Weather Conditions Unusual Site Conditions Water Level Data Measuring Point Location Well Casing Volume Depth to Water (ft) Depth to Base of Well (ft) (well casing volume = water column*0.164) Water Column (ft) Equipment Used to Measure Depths Well Purging Data Date 7/16/2014 Purging Equipment Total Voume (Gal) Time pH Temp (C)Conductance (µS) Initial 0 13:45 5.36 18.4 1.6 13:46 5.38 17.8 3.2 13:47 5.37 17.6 Final 4.8 13:49 5.37 17.9 Well Sampling Data Sampling Date Sampling Time Sampling Equipment Sample Observations Analytical Data Method Container Type and No. Preservation Appendix I VOCs (3) 40 mL glass vials Appendix I Metals (1) 250 mL plastic bottle Comments Lab 58 Partly cloudy/approx. 80°F TOC 1.6 41.22 51.90 9.78 Electric Water Level Probe Disposable Teflon Bailer 57 HCL HNO3 ENCO 47 57 7/16/2014 13:50 disposable teflon bailer Heavily turbid Project Name: Lincoln County Landfill Project Location: Crouse, North Carolina Project Number: 7235-14-019 Well ID MW-37 Sampling Personnel (1) Jasmine Tayouga (2) Courtney Murphy Weather Conditions Unusual Site Conditions Water Level Data Measuring Point Location Well Casing Volume Depth to Water (ft) Depth to Base of Well (ft) (well casing volume = water column*0.164) Water Column (ft) Equipment Used to Measure Depths Well Purging Data Date 7/16/2014 Purging Equipment Total Voume (Gal) Time pH Temp (C)Conductance (µS) Initial 0 13:51 5.55 19.2 2.0 13:53 5.60 19.6 4.0 13:55 5.72 19.8 Final 6.0 13:57 5.88 19.5 Well Sampling Data Sampling Date Sampling Time Sampling Equipment Sample Observations Analytical Data Method Container Type and No. Preservation Appendix I VOCs (3) 40 mL glass vials Appendix I Metals (1) 250 mL plastic bottle Comments Lab 37 Partly cloudy/approx. 80°F TOC 2.0 45.65 59.00 12.35 Electric Water Level Probe Disposable Teflon Bailer 24 HCL HNO3 ENCO 39 31 7/16/2014 14:00 disposable teflon bailer Clear Appendix VII – Historical Tetrachloroethene Concentrations