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Home My WebLink About2906_DavidsonCounty_MSWLF_Phase2_GWMR_20180110DocuSign Envelope ID: 8BB0D122-C022-4F9D-A196-A2263D188DEA This page intentionally left blank. DocuSign Envelope ID: 8BB0D122-C022-4F9D-A196-A2263D188DEA September 2017 Semi-Annual Groundwater Monitoring Report Davidson County Phase 2 MSW Landfill NC Solid Waste Permit No. 29-06 Prepared for: Davidson County Integrated Solid Waste 1242 Old Highway 29 Thomasville, North Carolina 27360-0024 January 2018 Prepared by: © 2018 Smith Gardner, Inc. This document is intended for the sole use of the client for which it was prepared and for the purpose agreed on by the client and Smith Gardner, Inc. DocuSign Envelope ID: 8BB0D122-C022-4F9D-A196-A2263D188DEA This page intentionally left blank. DocuSign Envelope ID: 8BB0D122-C022-4F9D-A196-A2263D188DEA September 2017 Groundwater Monitoring Report Davidson County Phase 2 MSW Landfill NC Solid Waste Permit No. 29-06 Prepared For: Davidson County Integrated Solid Waste Thomasville, North Carolina 27360-0024 S+G Project No. DAVDCO 16-4 Madeline German, P.G. Project Geologist Joan Smyth, P.G. Senior Hydrogeologist January 2018 DocuSign Envelope ID: 8BB0D122-C022-4F9D-A196-A2263D188DEA 1/10/2018 1/10/2018 This page intentionally left blank. DocuSign Envelope ID: 8BB0D122-C022-4F9D-A196-A2263D188DEA Davidson County Phase 2 MSW Landfill September 2017 Groundwater Monitoring Report January 2018 Table of Contents Page i Davidson County Phase 2 MSW Landfill NC Solid Waste Permit No. 29-06 September 2017 Groundwater Monitoring Report Table of Contents Page 1.0 INTRODUCTION ......................................................................................................... 1 2.0 SITE GEOLOGY ........................................................................................................... 1 3.0 SAMPLING LOCATIONS ............................................................................................. 1 4.0 SAMPLING PROCEDURES ......................................................................................... 1 5.0 FIELD & LABORATORY RESULTS .............................................................................. 2 5.1 Field Results .............................................................................................................. 2 5.2 Laboratory Analysis ................................................................................................... 2 5.2.1 Inorganic Constituents .................................................................................. 2 5.2.2 Organic Constituents .................................................................................... 3 5.2.3 Surface Water Results .................................................................................. 3 5.2.4 Leachate Analysis ......................................................................................... 3 6.0 STATISTICAL ANALYSIS ............................................................................................ 3 7.0 GROUNDWATER CHARACTERIZATION ...................................................................... 3 8.0 CONCLUSIONS .......................................................................................................... 4 FIGURE Figure 1 Site Map Figure 2 Potentiometric Surface Map TABLES Table 1 Groundwater Elevations Table 2 Field Parameters Table 3 Detected Constituents Table 4 Leachate Analytical Data Table 5 Aquifer Conductivity and Velocity Calculations APPENDICES Appendix A Monitoring Well Information Appendix B Laboratory Analytical Report Appendix C Time vs. Concentration Graphs DocuSign Envelope ID: 8BB0D122-C022-4F9D-A196-A2263D188DEA Davidson County Phase 2 MSW Landfill September 2017 Groundwater Monitoring Report January 2018 Table of Contents Page ii This page intentionally left blank. DocuSign Envelope ID: 8BB0D122-C022-4F9D-A196-A2263D188DEA Davidson County Phase 2 MSW Landfill September 2017 Groundwater Monitoring Report January 2018 Page 1 1.0 INTRODUCTION Smith Gardner, Inc. (S+G) was contracted by Davidson County to perform semi-annual groundwater monitoring at the Davidson County Phase 2 Lined MSW Landfill, permit number 29-06, as required by 15A NCAC 13B .1600. Sampling was conducted September 18-21, 2017. This report summarizes the event sampling procedures, field and laboratory results and groundwater characterization as required by NC Solid Waste Regulations. Summary tables, a potentiometric map and the laboratory analytical report are also included. 2.0 SITE GEOLOGY The Davidson County Landfill facility is located in the Piedmont Physiographic Province of North Carolina approximately three and a half miles northeast of the City of Lexington, NC. The Geologic Map of North Carolina (USGS, 1985) indicates that the site lies at the western margin of the Carolina Slate Belt; an area of predominantly volcanic and sedimentary rocks of Late Proterozoic to Cambrian age that have been metamorphosed and intruded by numerous igneous plutons. The boundary zone between the Carolina Slate Belt and the adjacent Charlotte Belt is known as the Gold Hill/Silver Hill shear zone. The site vicinity is underlain by volcanic rocks from the Flat Swamp Member of the Cid Formation and metavolcanic rocks of the Battleground Formation. 3.0 SAMPLING LOCATIONS The groundwater network for Phase 2 at Davidson County includes nine monitoring wells (MW- 1, MW-2, MW-3S, MW-4S, MW-5, MW-6S, MW-8, MW-9 and MW-10S), two surface water locations (SW-1 and SW-2) and one leachate sampling point (Leachate). Monitoring wells MW- 3D, MW-4D and MW-10D are designated as water level only locations. MW-1 serves as the background well for this site. Monitoring wells MW-1 and MW-4S were dry this event, additionally MW-9 was unable to be located due to site activity and was not sampled this event. A trip blank was submitted for quality control purposes. Available well logs are presented in Appendix A. Sampling locations are shown on Figure 1. 4.0 SAMPLING PROCEDURES Sampling procedures followed the protocols set forth in the site’s Water Quality Monitoring Plan1 and the North Carolina Water Quality Monitoring Guidance Document for Solid Waste Facilities (North Carolina Department of Environment and Natural Resources, Division of Waste Management). S+G personnel gauged each well to determine groundwater depth and purged three to five well volumes or until dry. Groundwater elevations are provided in Table 1. 1 Water Quality Monitoring Plan, Davidson County, Phase 2, Areas 1 and 2, Smith Gardner, Inc. January 2013, presented in the Permit to Construct application. DocuSign Envelope ID: 8BB0D122-C022-4F9D-A196-A2263D188DEA Davidson County Phase 2 MSW Landfill September 2017 Groundwater Monitoring Report January 2018 Page 2 Environment 1, Inc. (NC Laboratory Certification # 10) provided laboratory prepared sample containers for the specified analytical procedures. Sample collection was performed using factory sealed teflon bailers. Groundwater samples were properly preserved, placed on ice and transported to the laboratory facility within the specified hold times for each analysis. Sampling wells and locations were inspected and found to be in good condition and free of obstructions. 5.0 FIELD & LABORATORY RESULTS 5.1 Field Results Temperature, pH, turbidity and specific conductance were measured in the field at the time of sampling via direct read instruments. The field parameter results are summarized in Table 2 and remain consistent with previously reported sampling events. 5.2 Laboratory Analysis Samples were transported to Environment 1, Inc., in Greenville, NC, a North Carolina certified laboratory (NC Wastewater ID #10). Laboratory analysis for groundwater included metals via EPA Test Method 200.8 and Appendix I Volatile Organic Compounds (VOCs) via EPA Test Method 8260B. Leachate samples were also analyzed for BOD, COD, total suspended residue, ammonia nitrogen, nitrate nitrogen, total phosphorus and sulfate via the SWS approved method noted in the laboratory analytical report. Analytical results were compared to the NC Division of Waste Management Solid Waste Section Quantitation Limits (SWSLs); 15A NCAC 2L.0200 (2LStandard) or SWS determined groundwater protection standard (GWP) and Federal Maximum Contaminant Level. Surface water results were compared with the NCAC 2B Standard for Class C waters (2B Standards). Most inorganic constituents were either below the method detection limit (MDL) or were “J-values”, reported by the laboratory as between the MDL and the SWSL. The laboratory results are presented in Appendix B. 5.2.1 Inorganic Constituents Chromium (MW-3S and MW-6S) was the only inorganic constituent reported at a concentration above its 2L Standard in samples collected this event. Three inorganic constituents had concentrations above their GWP Standards in samples collected this event.  Cobalt (MW-2, MW-3S, MW-5 and MW-6S) DocuSign Envelope ID: 8BB0D122-C022-4F9D-A196-A2263D188DEA Davidson County Phase 2 MSW Landfill September 2017 Groundwater Monitoring Report January 2018 Page 3  Thallium (MW-6S)  Vanadium (MW-2, MW-3S, MW-4D, MW-5, MW-6S, MW-8 and MW-10S) These inorganic constituents are naturally occurring in North Carolina and may also have been influenced by high sample turbidity which was measured during this event and was found to be elevated in some locations. Additionally, historic inorganic detections above the MDL have been reported in background well MW- 1 indicating the natural occurrence of these constituents. A summary of inorganic laboratory results is presented in Table 3. 5.2.2 Organic Constituents No organic constituents were detected in samples above the MDL values for the September monitoring event. 5.2.3 Surface Water Results No inorganic or organic constituents were detected above 2B Standards in surface water samples. Surface water results are shown in Table 3. 5.2.4 Leachate Analysis Leachate samples were collected from the leachate collection system. A summary of constituents detected in the leachate is included as Table 4. 6.0 STATISTICAL ANALYSIS No statistical analyses were performed on the analytical data based on the latest version of 15A NCAC 13B.1632 and .1633 effective April 1, 2011. Time vs. concentration graphs are included in Appendix C. 7.0 GROUNDWATER CHARACTERIZATION A potentiometric surface map was prepared from groundwater data from this sampling event. Groundwater flow velocities for this sampling event were calculated for monitoring wells using the equation: V = Ki/n where: K = hydraulic conductivity i = groundwater gradient n = porosity Groundwater velocities in the uppermost aquifer at the Phase 2 MSW Landfill ranged from 0.0089 feet/day (MW-2) to 0.6984 feet/day (MW-9) and averaging 0.581 feet/day. Calculations are included in Table 5. Groundwater elevations indicate the flow direction is generally DocuSign Envelope ID: 8BB0D122-C022-4F9D-A196-A2263D188DEA Davidson County Phase 2 MSW Landfill September 2017 Groundwater Monitoring Report January 2018 Page 4 northwest across the site; which is consistent with historically reported ground water flow patterns. The potentiometric surface map is included as Figure 2. 8.0 CONCLUSIONS Laboratory results indicate the water quality at the Davidson County Phase 2 Landfill is generally consistent with reported historical detections. Inorganic constituent detections are likely due to natural occurrence and their presence in the soil and rock formations, not impact from the landfill. High turbidity detected in some of these samples can bias inorganic results high. In general, detected groundwater concentrations at the site have remained stable. The next groundwater monitoring event will be performed in March 2018; results will be reported to NCDEQ in accordance with 15A NCAC 13B.1600 et seq. DocuSign Envelope ID: 8BB0D122-C022-4F9D-A196-A2263D188DEA FIGURES September 2017 Groundwater Monitoring Report Davidson County Phase 2 MSW Landfill NC Solid Waste Permit No. 29-06 DocuSign Envelope ID: 8BB0D122-C022-4F9D-A196-A2263D188DEA This page intentionally left blank. DocuSign Envelope ID: 8BB0D122-C022-4F9D-A196-A2263D188DEA G:\CAD\Davidson\Davdco 17-4\sheets\DAVDCO-B0852.dwg - 11/22/2017 11:31 AMDRAWN:APPROVED:PROJECT NO:SCALE:FILENAME:DATE:FIGURE NO.PREPARED BY:PREPARED FOR:SMITH14 N. Boylan Avenue, Raleigh NC 27603NC LIC. NO. F-1370 (ENGINEERING)919.828.0577GARDNER+© 2017 Smith Gardner, Inc.SITE MAPSEPTEMBER 2017PHASE 2 LANDFILLDAVIDSON COUNTY, NCJ.A.L.M.M.G.AS SHOWN1Nov 2017DAVDCO 17-4DAVDCO-B0852DocuSign Envelope ID: 8BB0D122-C022-4F9D-A196-A2263D188DEA This page intentionally left blank. DocuSign Envelope ID: 8BB0D122-C022-4F9D-A196-A2263D188DEA MW-2TOC=661.05 DTW=12.87 GWE=651.19 MW-1 TOC=734.16 DTW=DRY MW-9 TOC=683.25 DTW=23.40 GWE=659.85 MW-4D TOC=673.54 DTW=24.47 GWE=649.07 MW-3S TOC=660.73 DTW=11.32 GWE=649.41 MW-3D TOC=660.91 DTW=10.88 GWE=650.03 MW-5 TOC=687.31 DTW=33.34 GWE=653.97 MW-7 MW-8 TOC=711.14 DTW=51.37 GWE=659.77 MW-6S TOC=703.25 DTW=39.47 GWE=663.78 MW-6D SW-1 SW-2 SW-3 MW-10D TOC=668.76 DTW=19.46 GWE=649.30 MW-10S TOC=668.58 DTW=18.90 GWE=649.68 MW-4S TOC=673.82 DTW=23.46 GWE=650.36 G:\CAD\Davidson\Davdco 17-4\sheets\DAVDCO-B0852.dwg - 11/21/2017 12:06 PMDRAWN:APPROVED:PROJECT NO:SCALE:FILENAME:DATE:FIGURE NO.PREPARED BY:PREPARED FOR:SMITH14 N. Boylan Avenue, Raleigh NC 27603NC LIC. NO. F-1370 (ENGINEERING)919.828.0577GARDNER+© 2017 Smith Gardner, Inc.POTENTIOMETRIC SURFACE MAPSEPTEMBER 2017PHASE 2 LANDFILLDAVIDSON COUNTY, NCJ.A.L.M.M.G.AS SHOWN2Nov 2017DAVDCO 17-4DAVDCO-B0852MW-1 TOC= DTW= GWE= SW-1 DocuSign Envelope ID: 8BB0D122-C022-4F9D-A196-A2263D188DEA This page intentionally left blank. DocuSign Envelope ID: 8BB0D122-C022-4F9D-A196-A2263D188DEA TABLES September 2017 Groundwater Monitoring Report Davidson County Phase 2 MSW Landfill Solid Waste Permit No. 29-06 DocuSign Envelope ID: 8BB0D122-C022-4F9D-A196-A2263D188DEA This page intentionally left blank. DocuSign Envelope ID: 8BB0D122-C022-4F9D-A196-A2263D188DEA Table 1Groundwater ElevationsDavidson County Phase 2 LandfillSeptember 18-21, 2017By: MGDate: 11/5/2017WellWell Installation DateLatitude LongitudeWell Diameter (inches)Total Well Depth (feet bgs)Ground Surface Elevation (feet amsl)TOC Elevation (feet amsl)Depth to Water* (feet)Groundwater Elevation (feet)Screen Interval (feet bgs)Screen GeologyMW-1 3/25/2008 35.85289 80.17643 2.0 23.1 730.65 734.16 DRY DRY 10-20 sandy siltMW-2 8/12/2008 35.84994 80.18351 2.0 17.0 661.05 664.06 12.87 651.19 9.5-14.5 sandy silt/graniteMW-3S 3/24/2008 35.84948 80.18486 2.0 21.3 657.87 660.73 11.32 649.41 8-18 clay and sandMW-3D 3/26/2008 35.84948 80.18484 2.0 43.2 658.08 660.91 10.88 650.03 35.5-40.5 graniteMW-4S 3/24/2008 35.84953 80.18559 2.0 24.0 670.74 673.82 23.46 650.36 11-21 sandy silt with clayMW-4D 3/26/2008 35.84952 80.18557 2.0 40.2 670.60 673.54 24.47 649.07 32-37 dioriteMW-5 3/24/2008 35.84863 80.18713 2.0 39.9 684.59 687.31 33.34 653.97 28-38 clayey siltMW-6S 3/25/2008 35.84681 80.18525 2.0 42.0 700.00 703.25 39.47 663.78 30-40 sandy silt with gravelMW-8 3/24/2008 35.84736 80.18404 2.0 61.4 708.21 711.14 51.37 659.77 48.6-58.6 dioriteMW-9 8/12/2008 35.84906 80.18614 2.0 30.5 683.68 683.25 NA NA 20.5-30.5 dioriteMW-10S 9/21/2004 35.85083 80.18306 2.0 28.9 665.17 668.58 18.90 649.68 12-27 silty sand, clay & gravelMW-10D 9/21/2004 35.85082 80.18305 2.0 46.3 666.02 668.76 19.46 649.30 36-44 diabaseNote:Survey data from Michael Green and Associates, P.A.amsl = above mean sea levelbgs = below ground surfaceNA = Unable to locate well this sampling eventWell construction information from well logs (provided in Appendix A)* Depth to water measured from Top of PVC Casing=H:\Projects\Groundwater Monitoring\2. Groundwater Monitoring Reports\Davidson\25. Davidson 9-17\Ph 2\9-17_Ph2 dav tables.xlsxDocuSign Envelope ID: 8BB0D122-C022-4F9D-A196-A2263D188DEA Table 2Field ParametersDavidson County Phase 2 LandfillSeptember 18- 21, 2017By: WWDate: 10/5/17pH Conductivity Temperature(Std. Units) (umhos) (Celsius)MW-2 6.17 250 20.68 39MW-3S 6.76 280 19.87 22.6MW-4D 6.59 614 19.5 10.2MW-5 5.89 134 20.32 88.6MW-6S 6.51 581 19.45 163MW-8 6.59 401 22.57 13MW-10S 6.31 330 16.9 56.2Note:Data Collected by Smith Gardner, Inc. personnelTurbidity (NTU)Well=H:\Projects\Groundwater Monitoring\2. Groundwater Monitoring Reports\Davidson\25. Davidson 9-17\Ph 2\9-17_Ph2 dav tables.xlsxDocuSign Envelope ID: 8BB0D122-C022-4F9D-A196-A2263D188DEA Table 3Detected ConstituentsDavidson County Landfill - Phase 2September 18- 21, 2017By: WWDate: 10/5/17Parameter MDL SWSL2L or GWP*MCL 2B MW-2 MW-3S MW-4D MW-5 MW-6S MW-8 MW-10S SW-1 SW-2InorganicsAntimony 0.06 6 1* 6 640 <0.06 <0.06 <0.06 <0.06 <0.06 <0.06 <0.06 0.24 J 0.2 JArsenic 0.07 10 10 10 10 0.1 J 0.38 J 0.26 J 0.12 J 1.3 J 0.42 J 0.14 J 0.72 J 0.6 JBarium 0.07 100 700 2000 200000 18.5 J 52.4 J 93.7 J 46.9 J 951 2.5 J 4.6 J 37.2 J 34.7 JBeryllium 0.07 1 4* 4 6.5 <0.07 0.13 J <0.07 0.21 J 0.46 J <0.07 <0.07 <0.07 <0.07Cadmium 0.08 1 2 5 2 <0.08 <0.08 <0.08 <0.08 0.23 J <0.08 <0.08 <0.08 <0.08Cobalt 0.24 10 1* NE 41.2 J 2.8 J<0.245.7 J 350.35 J 0.26 J 0.53 J 0.48 JCopper 0.09 10 1000 1300 7 5.3 J 6.5 J 1.7 J 22 282 1.3 J 1.4 J 2 J 1.9 JChromium, total 0.08 10 10 100 50 6.8 J12<0.08 5.1 J162.3 J 1.8 J 0.22 J <0.08Lead 0.08 10 15 15 25 0.51 J 1.2 J <0.08 3.5 J 8.3 J 0.1 J 0.09 J 0.31 J 0.24 JNickel 0.08 50 100 NE 88 2 J 3.6 J 1.3 J 6.3 J 11.5 J 1.2 J 1.1 J 1.5 J 1.5 JSelenium 0.51 10 20 50 5 <0.51 0.75 J <0.51 <0.51 0.7 J 0.69 J <0.51 <0.51 <0.51Thallium 0.08 5.5 0.28* 2 0.47 <0.08 <0.08 <0.08 <0.080.29 J<0.08 <0.08 <0.08 <0.08Vanadium 0.24 25 0.3* NE NE9.1 J 31 8.1 J 25 128 7.9 J 6.1 J2.5 J 2.2 JZinc 0.66 10 1000 5000 50 3.7 J 15 2.7 J 44 294 0.86 J 1.2 J 3.9 J 2.3 JNote:MDL - Method Detection Limit Table units are presented in ug/l.SWSL -Solid Waste Section Quantitation LimitsGWP - Groundwater Protection Standard (Indicated with a *)2L-Groundwater Standards (15A NCAC 2L 0200)MCL-Federal Maximum Contaminant Limit2B-NCAC 2B Standard for Class C watersBold-Constituents detected above 2L or GWPJ-Laboratory defined between MDL and SWSL< MDL -Not detected at or above MDLNE -Standard Not EstablishedLab data analysis by Environment 1, Inc. report dated 11/1/2017, ID#6059.H:\Projects\Groundwater Monitoring\2. Groundwater Monitoring Reports\Davidson\25. Davidson 9-17\Ph 2\9-17_Ph2 dav tables.xlsxDocuSign Envelope ID: 8BB0D122-C022-4F9D-A196-A2263D188DEA This page intentionally left blank. DocuSign Envelope ID: 8BB0D122-C022-4F9D-A196-A2263D188DEA Table 4 Leachate Analytical Data Davidson County Phase 2 Landfill September 18- 21, 2017 By: MG Date: 1/2/2018 Parameter Unit Leachate BOD mg/l 22 COD mg/l 361 Total Suspended Residue mg/l 224 Ammonia Nitrogen as N mg/l 246 Total Phosphorus mg/l 2.26 Antimony ug/l 2.8 J Arsenic ug/l 5.4 J Barium ug/l 381 Beryllium ug/l 0.16 J Cadmium ug/l 0.42 J Cobalt ug/l 12 Total Chromium ug/l 28 Copper ug/l 82 Nickel ug/l 89 Selenium ug/l 8.6 J Vanadium ug/l 46 Zinc ug/l 483 1,1-Dichloroethane ug/l 0.7 J 1,2-Dichloroethane ug/l 1.9 1,4-Dichlorobenzene ug/l 1.6 2-Butanone ug/l 4.4 J 4-Methyl-2-pentanone ug/l 16.1 J Acetone ug/l 25.9 Benzene ug/l 6 Cis-1,2-Dichloroethene ug/l 0.6 J Ethylbenzene ug/l 18.9 Styrene ug/l 1.3 trans-1,2-Dichloroethene ug/l 3.1 J Toluene ug/l 19.7 Vinyl Chloride ug/l 2.1 Xylenes ug/l 36 Note:J-values are laboratory defined between the SWSL and MDL. =H:\Projects\Groundwater Monitoring\2. Groundwater Monitoring Reports\Davidson\25. Davidson 9-17\Ph 2\9-17_Ph2 dav tables.xlsx DocuSign Envelope ID: 8BB0D122-C022-4F9D-A196-A2263D188DEA This page intentionally left blank. DocuSign Envelope ID: 8BB0D122-C022-4F9D-A196-A2263D188DEA Table 5Aquifer Conductivity and Velocity CalculationsDavidson County Phase 2 LandfillSeptember 18-21, 2017By: MGDate: 1/2/2018Well Number AquiferConductivity (ft/day)Conductivity (ft/min)Assumed Porosity (n)Gradient (I)Velocity (ft/day)MW-2Sandy Silt6.75E-02 4.69E-05 0.18 0.0238 0.0089MW-3sSand8.60E-02 5.97E-05 0.20 0.0447 0.0192MW-5Clayey Silt4.31E-01 2.99E-04 0.18 0.0206 0.0493MW-6sSand and Gravel4.64E-01 3.22E-04 0.22 0.0378 0.0797MW-8Diorite4.90E-01 3.40E-04 0.10 0.0092 0.0451MW-9Diorite7.20E-01 5.00E-04 0.10 0.0970 0.6984Average: 0.5810Notes:NA = Well had insufficient water to perform Slug Test, or insuffienent data to complete calculation.Porosity assumed based upon soil type from monitoring well boring log. Velocity Calculated by equation V = KI/nGradient for bedrock wells assumed to be the same as for unconsolidated aquifer in Gradient calculated from September 2017 potentiometric surface.+H:\Projects\Groundwater Monitoring\2. Groundwater Monitoring Reports\Davidson\25. Davidson 9-17\Ph 2\9-17_Ph2 dav tables.xlsxDocuSign Envelope ID: 8BB0D122-C022-4F9D-A196-A2263D188DEA This page intentionally left blank. DocuSign Envelope ID: 8BB0D122-C022-4F9D-A196-A2263D188DEA Appendix A Monitoring Well Information September 2017 – Groundwater Monitoring Report Davidson County Phase 2 MSW Landfill Solid Waste Permit No. 29-06 DocuSign Envelope ID: 8BB0D122-C022-4F9D-A196-A2263D188DEA This page intentionally left blank. DocuSign Envelope ID: 8BB0D122-C022-4F9D-A196-A2263D188DEA DocuSign Envelope ID: 8BB0D122-C022-4F9D-A196-A2263D188DEA DocuSign Envelope ID: 8BB0D122-C022-4F9D-A196-A2263D188DEA DocuSign Envelope ID: 8BB0D122-C022-4F9D-A196-A2263D188DEA DocuSign Envelope ID: 8BB0D122-C022-4F9D-A196-A2263D188DEA DocuSign Envelope ID: 8BB0D122-C022-4F9D-A196-A2263D188DEA DocuSign Envelope ID: 8BB0D122-C022-4F9D-A196-A2263D188DEA DocuSign Envelope ID: 8BB0D122-C022-4F9D-A196-A2263D188DEA DocuSign Envelope ID: 8BB0D122-C022-4F9D-A196-A2263D188DEA DocuSign Envelope ID: 8BB0D122-C022-4F9D-A196-A2263D188DEA DocuSign Envelope ID: 8BB0D122-C022-4F9D-A196-A2263D188DEA DocuSign Envelope ID: 8BB0D122-C022-4F9D-A196-A2263D188DEA DocuSign Envelope ID: 8BB0D122-C022-4F9D-A196-A2263D188DEA DocuSign Envelope ID: 8BB0D122-C022-4F9D-A196-A2263D188DEA DocuSign Envelope ID: 8BB0D122-C022-4F9D-A196-A2263D188DEA DocuSign Envelope ID: 8BB0D122-C022-4F9D-A196-A2263D188DEA DocuSign Envelope ID: 8BB0D122-C022-4F9D-A196-A2263D188DEA DocuSign Envelope ID: 8BB0D122-C022-4F9D-A196-A2263D188DEA DocuSign Envelope ID: 8BB0D122-C022-4F9D-A196-A2263D188DEA DocuSign Envelope ID: 8BB0D122-C022-4F9D-A196-A2263D188DEA DocuSign Envelope ID: 8BB0D122-C022-4F9D-A196-A2263D188DEA FIELD BOREHOLE LOG BOREHOLE NUMBER PROJECT NAME: LOACATION: DRILLING CO: DRILLING METHOD: FIELD PARTY: GEOLOGIST: DATE BEGUN: COMPLETED: TOTAL DEPTH: GROUND SURFACE ELEVATION: Depth (ft) Time Date STATIC WATER LEVEL (BLS)DEPTHBLOW COUNTSAMPLING METHODRECOVERYDRILL METHODDESCRIPTION LITHOLOGYWELLINSTALLATION0.0 1.0 2.0 3.0 4.0 5.0 6.0 7.0 8.0 9.0 10.0 11.0 12.0 13.0 14.0 15.0 16.0 17.0 18.0 19.0 20.0 21.0 22.0 23.0 24.0 25.0 26.0 27.0 0.0 1.0 2.0 3.0 4.0 5.0 6.0 7.0 8.0 9.0 10.0 11.0 12.0 13.0 14.0 15.0 16.0 17.0 18.0 19.0 20.0 21.0 22.0 23.0 24.0 25.0 26.0 27.0DEPTHG. N. Richardson & Associates, Inc. 14 North Boylan Avenue, Raleigh NC 27603 (919) 828-0577 Page 1 of 1 TOP OF CASING ELEVATION: PZ-37 HSA Davidson County - Phase 2 Lexington, NC Engineering Tectonics, P.A. R. Barron J. Smyth 9/21/04 9/21/04 27 SS SS SS SS SS 18" 10" 8" 3" 2" HSA SILTY SAND: Dry to moist, tan and black, silty sand granitic sarprolite with Mn staining. CLAYEY SANDY GRAVEL: Moist red brown clayey sandy gravel sarprolite. CLAYEY GRAVEL: Wet clayey gravel saprolite with large quartz grains. Boring terminated at 27 feet below grade. 11,21,37 6,9,15 4,8,28 50/3 50/2 19 2 pm 9/21/04 16.98 10/12/04 4:15 Converted to MW-10S DocuSign Envelope ID: 8BB0D122-C022-4F9D-A196-A2263D188DEA FIELD BOREHOLE LOG BOREHOLE NUMBER PROJECT NAME: LOACATION: DRILLING CO: DRILLING METHOD: FIELD PARTY: GEOLOGIST: DATE BEGUN: COMPLETED: TOTAL DEPTH: GROUND SURFACE ELEVATION: Depth (ft) Time Date STATIC WATER LEVEL (BLS)DEPTHBLOW COUNTSAMPLING METHODRECOVERYDRILL METHODDESCRIPTION LITHOLOGYWELLINSTALLATION0.0 1.0 2.0 3.0 4.0 5.06.07.0 8.0 9.0 10.0 11.0 12.0 13.0 14.0 15.0 16.0 17.018.019.020.0 21.0 22.0 23.0 24.0 25.0 26.0 27.0 28.0 29.0 30.031.032.033.0 34.0 35.0 36.0 37.0 38.0 39.0 40.0 41.0 42.0 43.044.0 0.0 1.0 2.0 3.0 4.0 5.06.07.0 8.0 9.0 10.0 11.0 12.0 13.0 14.0 15.0 16.0 17.018.019.020.0 21.0 22.0 23.0 24.0 25.0 26.0 27.0 28.0 29.0 30.031.032.033.0 34.0 35.0 36.0 37.0 38.0 39.0 40.0 41.0 42.0 43.044.0DEPTHG. N. Richardson & Associates, Inc. 14 North Boylan Avenue, Raleigh NC 27603 (919) 828-0577 Page 1 of 1 TOP OF CASING ELEVATION: PZ-37d HSA Davidson County - Phase 2 Lexington, NC Engineering Tectonics, P.A. R. Barron J. Smyth 9/21/04 10/14/06 44 SS SS SS SS SS 18" 10" 8" 3" 2" HSA AH/RC SILTY SAND: Dry to moist, tan and black, silty sand granitic sarprolite with Mn staining. CLAYEY SANDY GRAVEL: Moist red brown clayey sandy gravel sarprolite. CLAYEY GRAVEL: Wet clayey gravel saprolite with large quartz grains. AR at 30'. Air hammer to 34' to set outer casing in rock. DIABASE: Rock cored from 34' to 44' REC=95%, RQD=39%. Weathered diabase. Boring terminated at 44 feet. 11,21,37 6,9,15 4,8,28 50/3 50/2 Converted to MW-10D DocuSign Envelope ID: 8BB0D122-C022-4F9D-A196-A2263D188DEA Appendix B Laboratory Analytical Report September 2017 Groundwater Monitoring Report Davidson County Phase 2 MSW Landfill NC Solid Waste Permit No. 29-06 DocuSign Envelope ID: 8BB0D122-C022-4F9D-A196-A2263D188DEA This page intentionally left blank. DocuSign Envelope ID: 8BB0D122-C022-4F9D-A196-A2263D188DEA DocuSign Envelope ID: 8BB0D122-C022-4F9D-A196-A2263D188DEA DocuSign Envelope ID: 8BB0D122-C022-4F9D-A196-A2263D188DEA DocuSign Envelope ID: 8BB0D122-C022-4F9D-A196-A2263D188DEA DocuSign Envelope ID: 8BB0D122-C022-4F9D-A196-A2263D188DEA DocuSign Envelope ID: 8BB0D122-C022-4F9D-A196-A2263D188DEA DocuSign Envelope ID: 8BB0D122-C022-4F9D-A196-A2263D188DEA DocuSign Envelope ID: 8BB0D122-C022-4F9D-A196-A2263D188DEA DocuSign Envelope ID: 8BB0D122-C022-4F9D-A196-A2263D188DEA DocuSign Envelope ID: 8BB0D122-C022-4F9D-A196-A2263D188DEA DocuSign Envelope ID: 8BB0D122-C022-4F9D-A196-A2263D188DEA Appendix C Time vs. Concentration Graphs September 2017 Groundwater Monitoring Report Davidson County Phase 2 MSW Landfill NC Solid Waste Permit No. 29-06 DocuSign Envelope ID: 8BB0D122-C022-4F9D-A196-A2263D188DEA This page intentionally left blank. DocuSign Envelope ID: 8BB0D122-C022-4F9D-A196-A2263D188DEA 0.0020.0040.0060.0080.00100.00120.00140.00Concentration (ug/l)DateChromiumMW‐3SMW‐6SNC2LDocuSign Envelope ID: 8BB0D122-C022-4F9D-A196-A2263D188DEA 0.0010.0020.0030.0040.0050.0060.00Concentration (ug/l)DateCobaltMW‐2MW‐3SMW‐5MW‐6SNC2LDocuSign Envelope ID: 8BB0D122-C022-4F9D-A196-A2263D188DEA 0.000.100.200.300.400.500.600.70Concentration (ug/l)DateThalliumMW‐6SNC2LDocuSign Envelope ID: 8BB0D122-C022-4F9D-A196-A2263D188DEA 0.0050.00100.00150.00200.00250.00Concentration (ug/l)DateVanadiumMW‐10SMW‐2MW‐3SMW‐5MW‐6SMW‐8NC2LDocuSign Envelope ID: 8BB0D122-C022-4F9D-A196-A2263D188DEA