2906_DavidsonCoCDLF_GWMR_DIN28620_20170613

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March 2017 Semi-Annual Groundwater Monitoring Report

Davidson County Construction and Demolition Debris Landfill
NC Solid Waste Permit No. 29-06

Prepared for:

Davidson County Integrated Solid Waste
1242 Old Highway 29
Thomasville, North Carolina 27360-0024

June 2017

Prepared by:

© 2017 Smith Gardner, Inc.
This document is intended for the sole use of the client for which it was prepared and
for the purpose agreed upon by the client and Smith Gardner, Inc.

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6/13/2017
6/13/2017
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MW-1DSW-3-HGSW-1SW-2LINED MSW LANDFILL(PERMIT 29-06)CDMW-5SW-2MAINTENANCE BUILDINGSCALES/SCALEHOUSEC&D LANDFILL (INACTIVE)200' EXISTING RAILROADRIGHT OF WAY(NC RAILROAD)LEACHATESTORAGE PONDCLOSED PHASE 1MSW LANDFILLPROPERTY LINE (TYP.)DUKE POWERTRANSMISSION LINERIGHT OF WAYBORROW &STOCKPILEAREAACTIVE MSW LANDFILL(PHASES 2 AREA 1)G:\CAD\Davidson\Davdco 16-7\sheets\DAVDCO-B0834.dwg - 5/24/2017 11:05 AMSMITHGARDNER+DRAWN: APPROVED:PROJECT NO:SCALE:FILENAME:DATE:FIGURE NO. PREPARED BY:PREPARED FOR:© 2017 Smith Gardner, Inc.POTENTIOMETRIC SURFACE MAPMARCH 2017CLOSED PHASE 1 AND C&DDAVIDSON COUNTY, NCJ.A.L. M.M.G. AS SHOWN 1May 2017DAVDCO 16-7 DAVDCO-B0834*DocuSign Envelope ID: 83101A4F-1581-4AA0-A634-9F264F81B36B
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Table 1Groundwater ElevationsDavidson County C&D LandfillMarch 20-24, 2017By: MGDate: 5/11/2017WellWell Installation DateLatitude LongitudeWell Diameter (inches)Total Well Depth (ft bgs)Ground Surface Elevation (ft amsl)TOC Elevation (ft amsl)Depth to Water* (ft)Groundwater Elevation (ft amsl)Screen Interval (ft bgs)Screen GeologyCDMW-2 7/16/1998 35.84298 80.17524 2.0 51.0 702.27 704.80brokenbroken 41-51 graniteCDMW-3 12/5/2000 35.84273 80.17615 2.0 27.0 681.02 685.0013.36671.64 17-27 clayey sand & PWRCDMW-5 1/30/2006 35.84212 80.17707 2.0 47.0 696.79 699.8025.42674.38 32-47 graniteCDMW-6 11/15/2010 35.84076 80.17423 2.0 23.0 689.84 692.2711.87680.40 13-23 PWRCDMW-7 11/15/2010 35.84128 80.17424 2.0 45.0 698.56 701.1130.42670.69 35-45 silt & graniteNOTE: Survey data reported by Michael Green and Associates.amsl = above mean sea levelbgs = below ground surfaceWell construction information from well logs (provided in Appendix A)* Depth to water measured from TOCCDMW-2 was damaged by heavy equipment and could not be sampled this event.H:\Projects\Groundwater Monitoring\2. Groundwater Monitoring Reports\Davidson\24. Davidson 3-17\Mar-17 dav gw sampling tables.xlsxDocuSign Envelope ID: 83101A4F-1581-4AA0-A634-9F264F81B36B
Table 2Field ParametersDavidon County C&D LandfillMarch 20-24, 2017By: MGDate: 5/11/2017pH Conductivity Temperature(Std Units) (uhmos/cm) (Celsius)CDMW-3 5.47 240 17.2 10.34CDMW-5 5.31 170 15.1 7.65CDMW-6 5.13 180 14.0 14.6CDMW-7 5.95 180 14.8 10.31NOTE:Data Collected by S+G personnel.CDMW-2 was damaged and could not be sampled this event.Turbidity (NTU)WellField parameters for background well MW-1S, associated with the Phase 1 landfill, are presented in the Phase 1 report.H:\Projects\Groundwater Monitoring\2. Groundwater Monitoring Reports\Davidson\24. Davidson 3-17\Mar-17 dav gw sampling tables.xlsxDocuSign Envelope ID: 83101A4F-1581-4AA0-A634-9F264F81B36B
Table 3Detected Inorganic ParametersDavidson County C&D LandfillMarch 20-24, 2017By:JMDate:5/29/17Constituent MDL SWSL 2L or GWPMCLCDMW-3 CDMW-5 CDMW-6 CDMW-7total alkalinity (mg CaCO3/l) 1NENE NE307 124 48 118chloride (mg/l) 5 NE 250 250** 68 43 33 36total dissolved residue (mg/l)1 NE 500 500**698285 399 427sulfate (mg/l) 1.04 250 250 250** 128 J 45.7 J 162 J 108 Jbarium 0.02 100 700 2000 218 48.7 J 6.7 J 7.8 Jberyllium 0.04 1 4* 4 0.05 J <0.04 0.1 J <0.04cobalt 0.04 10 1* NE 1.5 J 0.64 J 0.19 J 0.18 Jcopper0.07 10 1000 1300 4.1 J 1.8 J 0.36 J 1.0 Jiron 5.23 300 300 3001021 467277 J321manganese 0.22 50 50 50195 57 628.8 Jlead 0.06 10 15 15 0.23 J 0.09 J 0.14 J 0.13 Jnickel 0.06 50 100 NE 8 J 2.6 J 8.1 J 2.6 Jselenium 0.54 10 20 50 2.7 J <0.54 0.62 J 0.68 Jvanadium 0.36 25 0.3* NE 9.6 J 2.9 J 1.6 J 4.4 Jzinc 1.61 10 1000 5000 4.9 J 14 4.7 J 2.9 JNOTE:MDL -Method Detection LimitSWSL -Solid Waste Section Quantitation Limits2L-Groundwater Standards (15A NCAC 2L 0200)GWP-SWS Groundwater Protection Standards (noted by *)MCL - Federal Maximum Contaminant Limit** - National Secondary Drinking Water StandardBOLD-Detection above 2L or GWP StandardJ-Laboratory defined between MDL and SWSL<MDL -Not detected at or above MDLNE - Standard Not EstablishedTable units are presented in ug/l unless otherwise noted.Lab data for background well MW-1S, associated with the Phase 1 landfill, are presented in the Phase 1 reportCDMW-2 was damaged and unable to be sampled this event.MW-1S, associated with Phase 1, is the bacground well for the C&DLab data analysis by Environment 1, Inc. report dated 4/28/2017, Client ID#6050.H:\Projects\Groundwater Monitoring\2. Groundwater Monitoring Reports\Davidson\24. Davidson 3-17\Mar-17 dav gw sampling tables.xlsxDocuSign Envelope ID: 83101A4F-1581-4AA0-A634-9F264F81B36B
Table 4Detected Organic ParametersDavidson County C&D LandfillMarch 20-24, 2017By: JMDate: 5/29/2017Constituent MDL SWSL 2L MCL CDMW-3 CDMW-5 CDMW-61,1-dichloroethane 0.20 5 6 NE 0.7 J <0.2 <0.2benzene 0.24 1 1 5 0.4 J <0.24 <0.24tetrahydrofuran 0.39 NE NE NE 65.2 2.6 3.2NOTE:MDL -Method Detection LimitSWSL -Solid Waste Section Quantitation Limits2L-Groundwater Standards (15A NCAC 2L 0200)MCL - Federal Maximum Contaminant LimitBOLD-Detection above 2L StandardJ-Laboratory defined between MDL and SWSLNE -Standard Not EstablishedTable units are presented in ug/l.CDMW-2 was damaged and unable to be sampled this event.MW-1S, associated with Phase 1, is the bacground well for the C&DLab data analysis by Environment 1, Inc. report dated 4/28/2017, Client ID#6050.H:\Projects\Groundwater Monitoring\2. Groundwater Monitoring Reports\Davidson\24. Davidson 3-17\Mar-17 dav gw sampling tables.xlsxDocuSign Envelope ID: 83101A4F-1581-4AA0-A634-9F264F81B36B
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FIELD BOREHOLE LOG
BOREHOLE NUMBER
PROJECT NAME:
LOCATION:
DRILLING CO:
DRILLING METHOD:
FIELD PARTY:
GEOLOGIST:
DATE BEGUN: COMPLETED:
TOTAL DEPTH:
TOP OF CASING ELEV.:
Depth (ft)
Time
Date
STATIC WATER LEVEL (from TOC)DEPTHBLOW COUNTSAMPLING METHODRECOVERYDRILL METHODDESCRIPTION LITHOLOGYWELLINSTALLATION0.0
5.0
10.0
15.0
20.0
0.0
5.0
10.0
15.0
20.0DEPTHSmith Gardner, Inc.
14 North Boylan Avenue, Raleigh NC 27603
[phone] Page 1 of 1
GROUND ELEV.:
NORTHING:EASTING:762991.614 1651988.624
Per 6"FeetInchesFeetCDMW-6
GP/AH
Davidson County C&D Landfill
Lexington, NC
Geologic Exploration
John Burr
Lindsay Quant
11/15/10 11/15/10
23
MC
MC
MC
MC
MC
GP
AH
SANDY CLAY: Dry red fine to medium sandy
clay.
SANDY SILT: Dry white to tan fine to medium
sandy silt. Geoprobe refusal at 7 feet.
PWR: Dry to wet partially weathered granite.
Boring terminated at 23 feet.
14.95
10 am
3/30/11
686.32
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BOREHOLE NUMBER
PROJECT NAME:
LOCATION:
DRILLING CO:
DRILLING METHOD:
FIELD PARTY:
GEOLOGIST:
DATE BEGUN: COMPLETED:
TOTAL DEPTH:
TOP OF CASING ELEV.:
Depth (ft)
Time
Date
STATIC WATER LEVEL (from TOC)DEPTHBLOW COUNTSAMPLING METHODRECOVERYDRILL METHODDESCRIPTION LITHOLOGYWELLINSTALLATION0.0
5.0
10.0
15.0
20.0
25.0
30.0
35.0
40.0
45.0
0.0
5.0
10.0
15.0
20.0
25.0
30.0
35.0
40.0
45.0DEPTHPage 1 of 1
GROUND ELEV.:
NORTHING:EASTING:Per 6"FeetInchesFeetMC
MC
GP
AH
SANDY SILT: Dry red to tan fine to medium
sandy silt.
SAND: Dry white to tan medium coarse sand with
some relict rock texture. Geoprobe refusal at 7
feet.
SILTY SAND: Dry tan silty sand partially
weathered rock (PWR) with some hard lenses.
GRANITE: Dry gray granite.
SILT: Dry brown silt.
GRANITE: Dry to moist gray granite.
SILT: Wet brown silt. Boring terminated at 45
feet.
31.02
11 am
3/30/11
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