9228_RedrockCDLF_GWMR_20171202

SECOND SEMI-ANNUAL 2016
SAMPLING EVENT
Red Rock Disposal, LLC C&D Landfill,
Permit No. 92-28
Wake County, North Carolina

Submitted To:

Red Rock Disposal, LLC 7130 New Landfill Drive
Holly Springs, NC 27540

Submitted By: Golder Associates NC, Inc.
5B Oak Branch Drive Greensboro, NC 27407

December 2016 0739-603516.100 WATER QUALITY MONITORING REPORT

Golder Associates NC, Inc. 5B Oak Branch Drive Greensboro, NC. 27407 USA Tel: [phone] Fax: [phone] www.golder.com Engineering Lic. No. C-2862/Geology Lic. No. C-399 Golder, Golder Associates and the GA globe design are trademarks of Golder Associates Corporation
December 2, 2016 0739-603516.100
Ms. Jaclynne Drummond
North Carolina Department of Environmental Quality Division of Waste Management - Solid Waste Section
2090 US Highway 70 Swannanoa, NC 28778
828-296-4706
RE: WATER QUALITY MONITORING REPORT, SECOND SEMI-ANNUAL 2016 SAMPLING
EVENT
RED ROCK DISPOSAL, LLC C&D LANDFILL, PERMIT NO. 92-28
WAKE COUNTY, NORTH CAROLINA
Dear Jackie:
On behalf of Red Rock Disposal, LLC, a subsidiary of Waste Industries USA, Inc., Golder Associates NC, Inc. is submitting the enclosed Water Quality Monitoring Report, which documents the results of the
September 27, 2016, compliance monitoring event at the above-referenced facility. Red Rock Disposal, LLC monitors groundwater at this facility for parameters listed in Title 15A NCAC 13B.0544 of the North
Carolina Solid Waste Management Rules (NCSWMR).
As presented, two NC Appendix I inorganic constituents (arsenic and barium) were detected at
concentrations above their respective Solid Waste Section Limits (SWSLs) and applicable groundwater standards in samples from one or more downgradient monitoring wells during the September 2016
monitoring event. Statistical analyses were performed to determine the source of the above-standard exceedances. Based on these analyses, the concentrations of arsenic and barium were determined to be
below the statistically calculated background concentrations and therefore, are interpreted as naturally occurring.
Cobalt and vanadium were detected at estimated concentrations below the SWSL, but above the Solid Waste Section Groundwater Protection Standards (GPS) in the samples from one or more downgradient
wells during this event. No further action is needed as concentrations are estimated and consistent with historical data.
Indicator parameters chloride, iron, manganese, and total dissolved solids were detected at concentrations in samples from one or more downgradient monitoring wells above their respective NC 2L
Standards during this event, as they have been during previous events. Statistical analyses were performed for these indicator parameters to evaluate potential trends. These concentrations are
generally consistent with historical data and appear to be representative of naturally-occurring conditions based on concentrations in upgradient wells and other background data; therefore, no further action is
required.
Arsenic and lead were detected at concentrations that exceeded their respective SWSLs and the
applicable surface water standards in surface water samples during the September 2016 event. There is no upstream monitoring point at this facility for comparisons. The concentrations of arsenic and lead in
surface water samples appear to be biased high due to entrained sediment based on field turbidity measurements. A precipitation event preceded the sampling event and concentrations do not appear to
be related to a release from the waste unit, therefore; no additional action is warranted at this time.
Based on these results, Red Rock Disposal, LLC will continue monitoring this facility in accordance with
the requirements of the Detection Monitoring Program for Construction & Demolition Landfills as outlined
December 2016 i 0739-603516.100

Table of Contents
COVER LETTER
1.0 INTRODUCTION ............................................................................................................................... 1
1.1 Site Description and Background .................................................................................................. 1
1.2 Compliance Monitoring History ..................................................................................................... 1
1.3 Hydrogeologic Setting ................................................................................................................... 2
2.0 FIELD PROGRAM, MONITORING RESULTS, AND DISCUSSION ................................................ 3
2.1 Visual Inspection Program ............................................................................................................ 3
2.2 Well Network and Groundwater Elevation Measurements ........................................................... 4
2.3 September 2016 Monitoring Event ............................................................................................... 4
2.4 Laboratory Analysis Program ........................................................................................................ 5
2.5 September 2016 Sampling Results .............................................................................................. 5
3.0 LABORATORY AND FIELD QA/QC ................................................................................................. 6
4.0 DATA EVALUATION ......................................................................................................................... 6
4.1 North Carolina Groundwater and Surface Water Standard Comparisons .................................... 6
4.2 Statistical Evaluations ................................................................................................................... 7
5.0 SUMMARY ........................................................................................................................................ 8
6.0 REFERENCES .................................................................................................................................. 8

List of Tables
Table 1 Summary of Historical Groundwater Elevation Data
Table 2 Summary of Estimated Horizontal Flow Velocities
Table 3 Summary of Well Construction Information
Table 4 Summary of Groundwater Monitoring Results
Table 5 Summary of Field Parameters from Groundwater Monitoring Points
Table 6 Summary of Surface Water Monitoring Results
Table 7 Summary of Field Parameters from Groundwater Monitoring Points
List of Drawings
Drawing 1 Groundwater Contour Map, September 27, 2016
List of Appendices
Appendix A Groundwater and Surface Water Sampling Logs
Appendix B September 2016 Groundwater Certificates-of-Analysis, Chain-of-Custody Forms and
Laboratory Data Reviews
Appendix C Statistical Evaluation Worksheets and Summary Table

December 2016 1 0739-603516.100

1.0 INTRODUCTION
This report summarizes the monitoring results from the September 27, 2016, groundwater and surface
water sampling and analysis event at the Red Rock Disposal, LLC Construction & Demolition (C&D)
Landfill (Red Rock Landfill) in Wake County, North Carolina (NC) in accordance with Title 15A of the
North Carolina Administrative Code (NCAC) Subchapter 13B.0544. The Red Rock Landfill, an active
C&D landfill, is owned and operated by Red Rock Disposal, LLC, a subsidiary of Waste Industries USA,
Inc. (Waste Industries), under Permit No. 92-28 issued by the NC Department of Environment of
Environmental Quality (DEQ), formerly NC Department of Environment and Natural Resources (DENR).
1.1 Site Description and Background
The location of the facility is shown on the inlay on Drawing 1. Red Rock Landfill is located in
southwestern Wake County, approximately 5 miles southwest of Holly Springs, NC. Access to the site is
from New Landfill Drive, located off Rex Road to the north of the site.
There are three streams that traverse the site, which drain into the Shearon Harris Reservoir, located to
the southwest of the site. One stream is the Jim Branch that flows southwesterly along the southeastern
portion of the property boundary. A second stream is an unnamed intermittent tributary of the Jim
Branch, which flows southeasterly across a portion of the northern property boundary. A third stream is
another unnamed tributary of the Jim Branch that flows southerly across a portion of the southern
property boundary. The locations of these surface water features are shown on Drawing 1.
Based on the topography as shown on Drawing 1, topographic surface elevations at the facility range
from elevations of approximately 250 feet above mean sea level (AMSL) near the southeastern portion of
the site near the Jim Branch, to 298 feet AMSL near the northeastern property boundary along Rex Road.
The site is surrounded predominantly by wooded or agricultural properties, along with a nearby rock
quarry. NC-designated game lands border portions of the site to the west. A Duke Energy Progress
power line easement cuts through the southern portion of the site.
1.2 Compliance Monitoring History
Groundwater monitoring at the facility was initiated in October 2001 after approval of G.N. Richardson &
Associates’ Water Quality Monitoring Plan (WQMP) for Phase I, by the NC DENR, which included MW-1,
MW-2, MW-3, MW-4, MW-5, MW-6, and MW-10. Four additional wells (MW-11, MW-12, MW-13, and
MW-14) were installed in August 2003. Compliance sampling of these four monitoring wells was initiated
during the September 2008 sampling event, associated with construction activities for Phase 1C-2.
Monitoring wells MW-1 and MW-9 were decommissioned during site construction activities in early 2008,
and MW-13 was decommissioned in May 2011 during site construction activities.
December 2016 2 0739-603516.100

The facility’s current monitoring network is comprised of 8 monitoring wells (MW-2T, MW-3, MW-4, MW-5,
MW-6T, MW-10, MW-11, and MW-14), which monitor the uppermost aquifer beneath the facility. Well
MW-10 is the facility’s upgradient background monitoring well. Monitoring wells MW-2T and MW-6T are
replacement wells for MW-2 and MW-6, which were decommissioned. Wells MW-11 and MW-14 are
located hydraulically upgradient with respect to Phase 1C-2. Well MW-12 remains for the collection of
water levels only.
In addition to the groundwater monitoring points, the facility’s monitoring network includes two
downstream surface water sampling points, SW-2 and SW-3. Upstream surface water monitoring point
SW-1 no longer exists due to site construction activities. Point SW-2 is located along an unnamed
tributary of Jim Branch, which is downstream of the waste area. Point SW-3 is located along Jim Branch,
downstream of the facility. These points are sampled in conjunction with the groundwater monitoring
wells in accordance with the facility’s permit and WQMP.
1.3 Hydrogeologic Setting
Geologically, the facility is located within the Deep River basin and Durham sub-basin of the Triassic
Basin in the Piedmont Physiographic Province of NC (NCGS 1985). Generally, the Triassic Basin
consists of Lower Mesozoic sedimentary and igneous rocks that filled rift basins. The Durham sub-basin
contains conglomerates, fanglomerates, sandstones, and mudstones. More specifically, all three Deep
River sub-basins contain a middle clay-shale and mudstone interval approximately 50 to 400 meters thick,
which is evident by the red shale present at the site, in addition to the presence of conglomerates and
sandstones. The Deep River basin is bounded on the east by the Jonesboro fault system and is intruded
by intersecting north and northwest-striking diabase dikes (Olsen, et al. 1991).
The uppermost groundwater beneath the facility is present in a shallow, unconfined aquifer comprised of
saprolite, partially weathered rock (PWR), and conglomerate bedrock. Groundwater occurs at depths
varying widely from approximately 2 feet below grade to more than 30 feet below grade across the site.
Groundwater depths average approximately 3 to 10 feet below grade along the perimeter downgradient
boundary, and approximately 5 to 25 feet below grade to the north along the upgradient northern
perimeter boundary.
Depth-to-water measurements obtained during the September 2016 monitoring event and summarized in
Table 1 were used to prepare a groundwater surface contour map presented on Drawing 1.
Surface water and groundwater at the site generally flows to the south and southeast toward Jim Branch,
located along the southeastern portion of the site. The Jim Branch flows toward the southwest into the
Shearon Harris Reservoir, located approximately ¾ of a mile from the site. Groundwater beneath the site
flows in three distinguishable and vertically interconnected hydrogeologic units; saprolite, PWR, and
December 2016 3 0739-603516.100

bedrock (GNR 2003). The groundwater contour map and interpreted flow directions are consistent with
previously submitted interpretations for this facility.
Based on the September 27, 2016, groundwater contour map, the hydraulic gradient in the shallow
aquifer underlying the site as measured along the conceptual flow path shown on the contour map was
calculated to be approximately 0.03 feet per foot. Groundwater velocities were calculated using a
hydraulic conductivity of 7.45E-04 centimeters per second, which is the average of the hydraulic
conductivities for each of the hydrogeologic units present at the facility (GNR 2003). The estimated
effective porosity of the shallow aquifer is 0.10 (GNR 2003).
Using the above values, the estimated rate of groundwater flow for the uppermost aquifer beneath the
facility was calculated using the following modified Darcy equation:
Vgw = Ki/ne
where Vgw = average linear velocity (feet/year), K = hydraulic conductivity (feet/year), i = horizontal
hydraulic gradient, and ne = effective porosity.
The average estimated linear groundwater flow velocity under the waste management unit is
approximately 230 feet/year, which is generally consistent with previous estimates (Table 2). The range
of groundwater flow is expected to vary depending on the hydrogeologic unit in which it occurs. The
linear velocity equation above makes the simplified assumptions of a homogeneous and isotropic aquifer.
Therefore, this equation represents a likely average value for the uppermost aquifer and does not account
for heterogeneous and/or anisotropic conditions that may be present in the uppermost aquifer at the
facility.
2.0 FIELD PROGRAM, MONITORING RESULTS, AND DISCUSSION
Field activities conducted as part of the September 2016 sampling event are discussed in the following
sections.
2.1 Visual Inspection Program
In order to detect a potential release at the earliest indication, the visual inspection program is used at the
Red Rock C&D Landfill by the sampling personnel. This program includes physical indicators such as
potential water table mounding beneath the waste management unit, physical examination of any
stresses in biological communities, unexplained changes in soil characteristics, and any other change to
the environment due to the waste management unit. During the September 2016 compliance monitoring
event, no physical indicators of a potential release were observed in the waste management areas by the
sampling personnel.
December 2016 4 0739-603516.100

2.2 Well Network and Groundwater Elevation Measurements
The current groundwater monitoring network at the facility consists of 8 wells. Available monitoring well
construction information for site monitoring wells is summarized on Table 3 and the well locations are
shown on Drawing 1. The well locations were selected to yield groundwater samples representative of
the conditions in the uppermost aquifer underlying the facility, and to monitor for potential releases from
the landfill unit. Two downstream (SW-2 and SW-3) surface water monitoring points are also monitored.
Monitoring well MW-10 is the facility’s background well, and is located hydraulically upgradient to
sidegradient of the waste disposal area. Monitoring wells MW-2T, MW-3, MW-4, MW-5, and MW-6T are
located downgradient of the waste disposal area and represent the facility’s downgradient compliance
wells. Monitoring wells MW-11 and MW-14 are compliance wells installed to monitor Phase 1C-2. The
well locations yield groundwater samples representative of the conditions in the uppermost aquifer
underlying the facility and monitor for potential releases from the landfill unit.
Depth-to-water measurements were recorded to the nearest 0.01 foot prior to and during groundwater
purging and sampling activities. The respective groundwater level elevations for this event are presented
in Table 1. The historical water level data are also shown on this table.
As presented, recent groundwater elevation data for the current monitoring well network indicate that the
hydraulic head level in the uppermost aquifer beneath the facility is fairly consistent, with temporal
variation from the long-term average limited to approximately 5 - 14 feet (plus or minus). However,
several historical groundwater elevation readings appear to be anomalous and are not considered
representative of site hydrogeologic conditions. The range in fluctuation (excluding anomalous data and
decommissioned wells) appears to be greatest in MW-10, which is the upgradient well, located in a
groundwater recharge area. The range in fluctuation in compliance wells MW-3, MW-4, MW-5, and
MW-6T, which are located near groundwater discharge areas, is much less, presumably due to the
stabilizing effect of the hydraulic discharge boundary.
2.3 September 2016 Monitoring Event
Personnel from Golder visited the facility on September 27, 2016, to purge and sample the eight
monitoring wells and to sample surface water monitoring points SW-2 and SW-3. Depth-to-water
measurements were obtained from the network monitoring wells to the nearest 0.01 foot using an
electronic water level indicator prior to purging the wells.
All monitoring wells were purged using dedicated bladder pumps. Low-flow micropurge procedures were
used during the purging and sampling of all wells. Measurements of pH, specific conductivity,
temperature, turbidity, dissolved oxygen, and oxidation reduction potential were recorded using field-
calibrated instruments on approximately 3 to 5-minute intervals, depending on the purge rate. In general,
the purge rate for each well was matched to the yield of the monitoring well, as determined by
December 2016 5 0739-603516.100

continuously monitoring the depth-to-water, up to a maximum purge rate of 500 milliliters per minute.
Purging was continued until stabilization was indicated by the water quality parameters.
Prior to sampling, the laboratory-supplied sample containers were prepared. Each sample container was
labeled with the sample identification number, sampling personnel, date and time of sample collection,
project name and number, and requested chemical analyses.
The required groundwater samples were collected directly from the bladder pump discharge lines in the
labeled, laboratory-supplied, pre-preserved sample containers after purging was completed based on
stabilization of all water quality parameters. After collection, the samples were placed in a cooler on ice,
under chain-of-custody control. Copies of the sampling logs are presented in Appendix A. Included in
each log is a description of the sampling equipment, sampling method and location, field observations,
and water quality measurements.
The surface water samples were collected from the stream flow, by lowering a decontaminated
polyethylene dipper into the stream flow with the opening facing away from the current to minimize
sample-induced turbidity. The collected water was then poured from the dipper into the sample
containers, taking care to prevent the overflow of the sample containers. Measurements of temperature,
pH, specific conductivity, turbidity, dissolved oxygen, and oxygen reduction potential were measured
directly from the stream and recorded during the collection of the surface water samples.
After collection, the surface water samples were placed in a cooler on ice, under chain-of-custody control.
Copies of the sampling logs are presented as Appendix A. Included in each log is a description of the
sampling equipment, sampling location, sampling method, field observations, and water-quality
measurements.
2.4 Laboratory Analysis Program
The September 27, 2016, groundwater and surface water samples were submitted to Environmental
Conservation Laboratories, Inc. (ENCO) of Cary, NC under chain-of-custody control for analysis. As
presented, groundwater samples at the facility were analyzed for NC Appendix I constituents, the
indicator parameters as specified in the Title 15A NCAC 13B.0544 of the Solid Waste Management
Rules, and tetrahydrofuran. Surface water samples were also analyzed for the NC Appendix I
constituents plus tetrahydrofuran. Groundwater and surface water samples were received at the
laboratory on September 29, 2016, in good condition and properly preserved.
2.5 September 2016 Sampling Results
Analytical results and field parameters for the September 2016 groundwater samples are summarized in
Tables 4 and 5 with available historical data. Historical results and field parameters for surface water
December 2016 6 0739-603516.100

samples are summarized in Tables 6 and 7. The laboratory certificates-of-analysis, chain-of-custody
form, and laboratory data reviews for the sampling event are included as Appendix B.
As presented, three NC Appendix I inorganic constituents (arsenic, barium, and nickel) were detected at
concentrations above their respective Solid Waste Section Limits (SWSLs) in samples from one or more
downgradient monitoring wells during the September 2016 monitoring event. Indicator metals, iron and
manganese were detected at concentrations above their respective SWSLs in samples from one or more
downgradient wells during the event. Indicator parameters chloride, total dissolved solids (TDS), and total
alkalinity were detected at quantifiable concentrations in samples from one or more downgradient wells
during the event. No NC Appendix I organic constituents were detected above their respective SWSLs in
groundwater samples during the event. In general, results are consistent with historical data.
As presented, five NC Appendix I inorganic constituents (arsenic, barium, chromium, lead, and zinc) were
detected at concentrations above their respective SWSLs in samples from one or both surface water
monitoring locations during the event. The number of detections and concentrations of inorganic
constituents in surface water samples during the September 2016 event appear to be biased high by
entrained sediment from a precipitation event that preceded the sampling event as evidenced by field
turbidity values. The No other NC Appendix I constituents were detected above their respective SWSLs
in surface water samples during the September 2016 event.
3.0 LABORATORY AND FIELD QA/QC
A field blank was collected by Golder personnel as part of the September 2016 groundwater sampling
event. In addition to the field blank, a laboratory-prepared trip blank accompanied the volatile sample
containers to and from the laboratory. ENCO analyzed the field blank for NC Appendix I constituents plus
indicator metals and tetrahydrofuran and the trip blank for NC Appendix I volatile organic compounds and
tetrahydrofuran. Reviews of the laboratory data were performed by Golder personnel (included in
Appendix B). Method blanks are also included in the laboratory QA/QC procedures. Barium and
manganese were detected in the method blank at estimated concentrations and copper and manganese
were detected in the field blank at estimated concentrations during this event. Based on Golder’s review,
copper in the samples from MW-2T, MW-3, MW-4, MW-5, MW-6T, MW-10, MW-11, MW-14, SW-2, and
SW-3 are considered blank-qualified.
4.0 DATA EVALUATION
The results of the data evaluations are presented in the following sections.
4.1 North Carolina Groundwater and Surface Water Standard Comparisons
As presented, two NC Appendix I inorganic constituents were detected in samples from one or more
downgradient wells at concentrations that exceeded their respective SWSLs and applicable groundwater
December 2016 7 0739-603516.100

standards during the September 2016 event. Arsenic was detected in the sample from MW-6T at a
concentration above the SWSL and NC 2L Standard. Barium was detected in the samples from
background well MW-10 and downgradient wells MW-3 and MW-6T at concentrations above the SWSL
and NC 2L Standard.
Iron was detected in the samples from MW-4 and MW-6T at concentrations above the SWSL and NC 2L
Standard. Manganese was detected above the SWSL and NC 2L Standard at background well MW-10
and downgradient wells MW-2T, MW-5, MW-6T, and MW-11. Chloride and total dissolved solids (TDS)
were detected at above-standard quantifiable concentrations at background well MW-10 and
downgradient wells MW-2T, MW-5, MW-6T, and MW-11 as they have been during previous events. As
described below, quantifiable above-standard concentrations were statistically determined to be below
background and no further action is required.
Cobalt was detected at an estimated concentration below the SWSL, but above its Groundwater
Protection Standard (GPS) in the sample from MW-5. Vanadium was detected in samples from MW-3,
MW-4, and MW-14 at estimated concentrations below the SWSL but above the GPS during this event.
No further action is needed as concentrations of cobalt and vanadium are estimated and consistent with
historical data.
Arsenic was detected at a concentration that exceeded the SWSL and the applicable surface water
standard in the sample from SW-3. Lead was detected at concentrations that exceeded the SWSL and
the applicable surface water standard in the samples from SW-2 and SW-3. The concentrations of
arsenic and lead in surface water samples during the September 2016 event appear to be biased high by
entrained sediment from a precipitation event that preceded the sampling event and are not
representative of an impact from the waste unit. As presented in Table 6, no other NC Appendix I
constituents were detected above applicable surface water standards in surface water monitoring points
during the September 2016 sampling event.
4.2 Statistical Evaluations
As presented above, two NC Appendix I inorganic constituents (arsenic and barium) and four indicator
parameters (iron, manganese, chloride, and TDS) were detected above the SWSLs and respective
groundwater standards in samples from one or more downgradient monitoring wells during this sampling
event. To determine the source of these above-standard detections, the concentrations were statistically
compared to background concentrations. The statistical worksheets and summary table are presented as
Appendix C.
Based on these analyses, the concentrations of arsenic, barium, iron, manganese, chloride, and TDS
were determined to be below the statistically calculated background concentrations and therefore, are
interpreted as naturally occurring.
December 2016 8 0739-603516.100

5.0 SUMMARY
Based on the results summarized herein, Red Rock Disposal, LLC, is in compliance with respect to water
quality monitoring requirements and will continue monitoring the uppermost aquifer beneath this facility in
accordance with the requirements of the Detection Monitoring Program for Construction & Demolition
Landfills as outlined in Title 15A NCAC 13B.0544. The next sampling event is tentatively scheduled for
March 2017.
6.0 REFERENCES
HGL (The Hutchinson Group, Ltd.), Murrysville, PA, various monitoring well, piezometer construction records and boring logs, July-October 2000.
GNR (G.N. Richardson & Associates, Inc.), Raleigh, NC, Groundwater and Surface Water Monitoring
Reports, November 2001 through October 2006, and Water Quality Monitoring Plans, May 2001 and October 2003.
NCGS (North Carolina Geologic Survey), 1985. Geologic Map of North Carolina.
Olsen et al. (Olsen, Paul E., Froelich, Albert J., Daniels, David L., Smoot, Joseph P., Gore, Pamela J.W.), Rift Basins of Early Mesozoic Age, in Horton, J.W., Jr., and Zullo, V.A., eds., The Geology of the Carolinas: The University of Tennessee Press, 1991, pp. 142-170.
US EPA Guidance for Guidance for Developing Ecological Soil Screening Levels. November 2003
USGS (Heath, Ralph C.), Basic Ground-Water Hydrology, Water Supply Paper 2220, for U.S. Department of Interior and U.S.G.S., 1983.
USGS National Geochemical Survey Database, http://mrdata.usgs.gov/geochem/, 2016
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TABLES
December 2016 Page 1 of 1 Project No. 0739603516
G:\PROJECTS\Waste Industries\Red Rock\Groundwater\GWMR\Sept 2016\Tables\Red Rock Tables September 2016.xlsx
TOC Elevation
(ft AMSL)
Date Elevation
(ft AMSL)
DTW
(ft)
Elevation
(ft AMSL)
DTW
(ft)
Elevation
(ft AMSL)
DTW
(ft)
Elevation
(ft AMSL)
DTW
(ft)
Elevation
(ft AMSL)
DTW
(ft)
Elevation
(ft AMSL)
DTW
(ft)
Elevation
(ft AMSL)
DTW
(ft)
Elevation
(ft AMSL)
DTW
(ft)
Elevation
(ft AMSL)
DTW
(ft)
Elevation
(ft AMSL)
DTW
(ft)
Elevation
(ft AMSL)
DTW
(ft)
11/30/2000 NI NI 248.38 13.42 241.87 12.23 251.28 3.19 NI NI 288.67 13.69 258.15 28.47 283.86 17.30 NI NI NI NI NI NI
1/10/2001 NI NI 248.23 13.57 249.18 4.92 251.48 2.99 NI NI 287.84 14.52 258.07 28.55 283.53 17.63 NI NI NI NI NI NI
2/13/2001 NI NI 248.66 13.14 251.48 2.62 251.87 2.60 NI NI 289.39 12.97 264.94 21.68 283.28 17.88 NI NI NI NI NI NI
4/9/2001 NI NI 249.95 11.85 251.24 2.86 251.49 2.98 NI NI 298.81 3.55 257.76 28.86 285.13 16.03 NI NI NI NI NI NI
4/26/2001 NI NI 249.57 12.23 250.10 4.00 251.76 2.71 NI NI 294.38 7.98 257.67 28.95 284.56 16.60 NI NI NI NI NI NI
6/11/2002 255.03 26.16 248.33 13.47 246.57 7.53 247.22 7.25 269.74 19.47 --------286.80 14.36 NI NI NI NI NI NI
11/1/2002 254.99 26.20 248.35 13.45 251.61 2.49 251.85 2.62 270.41 18.80 --------285.63 15.53 NI NI NI NI NI NI
3/6/2003 256.87 24.32 252.85 8.95 251.91 2.19 251.98 2.49 271.68 17.53 --------290.06 11.10 NI NI NI NI NI NI
9/9/2003 256.21 24.98 250.19 11.61 251.36 2.74 251.19 3.28 275.07 14.14 --------287.74 13.42 280.77 30.00 299.71 15.12 291.03 10.17
9/23/2003 237.32 43.87 249.92 11.88 250.86 3.24 250.82 3.65 275.24 13.97 ------------------------
3/11/2004 257.22 23.97 252.61 9.19 251.73 2.37 251.81 2.66 277.64 11.57 --------290.45 10.71 ------------
9/23/2004 257.62 23.57 250.98 10.82 251.57 2.53 251.44 3.03 275.73 13.48 --------290.13 11.03 ------------
3/10/2005 257.31 23.88 252.19 9.61 251.88 2.22 251.99 2.48 275.37 13.84 --------290.88 10.28 ------------
9/22/2005 255.82 25.37 248.26 13.54 247.45 6.65 246.83 7.64 ------------289.94 11.22 ------------
3/6/2006 256.17 25.02 250.29 11.51 250.61 3.49 250.59 3.88 274.96 14.25 --------291.63 9.53 ------------
9/19/2006 257.19 24.00 248.77 13.03 248.53 5.57 250.47 4.00 277.26 11.95 --------290.83 10.33 ------------
3/20/2007 266.28 14.91 251.80 10.00 251.30 2.80 251.05 3.42 275.79 13.42 --------293.25 7.91 289.81 20.96 300.53 14.30 290.12 11.08
9/27/2007 256.52 24.67 247.78 14.02 247.31 6.79 248.56 5.91 277.70 11.51 293.42 8.94 ----289.87 11.29 283.46 27.31 300.39 14.44 286.50 14.70
3/25/2008 255.94 25.25 249.68 12.12 251.79 2.31 252.27 2.20 274.91 14.30 298.75 3.61 266.67 19.95 290.19 10.97 288.16 22.61 295.82 19.01 285.98 15.22
9/29-30/2008 256.98 24.21 248.02 13.78 250.08 4.02 251.99 2.48 275.85 13.36 292.83 9.53 267.24 19.38 288.81 12.35 282.62 28.15 296.81 18.02 286.67 14.53
3/30-31/2009 256.60 24.59 251.61 10.19 251.74 2.36 252.04 2.43 275.29 13.92 301.86 0.50 266.52 20.10 292.66 8.50 287.02 23.75 297.31 17.52 290.13 11.07
9/29-30/2009 257.10 24.09 248.08 13.72 249.28 4.82 250.97 3.50 276.94 12.27 --------289.98 11.18 283.57 27.20 299.23 15.60 286.97 14.23
3/30-31/2010 257.12 24.07 251.50 10.30 251.54 2.56 251.89 2.58 275.62 13.59 300.57 1.79 268.15 18.47 294.24 6.92 290.05 20.72 301.74 13.09 290.48 10.72
9/29-30/2010 257.10 24.09 248.22 13.58 251.44 2.66 252.28 2.19 277.90 11.31 293.07 9.29 267.15 19.47 293.24 7.92 289.05 21.72 300.74 14.09 287.34 13.86
4/6-4/7/2011 255.19 26.00 248.70 13.10 251.28 2.82 251.72 2.75 275.31 13.90 290.51 11.85 267.01 19.61 289.45 11.71 290.04 20.73 299.02 15.81 287.45 13.75
9/28/2011 258.15 23.04 247.76 14.04 249.11 4.99 251.92 2.55 277.30 11.91 290.16 12.20 266.62 20.00 288.22 12.94 284.80 25.97 298.59 16.24 286.09 15.11
3/28/2012 257.68 23.51 250.72 11.08 251.48 2.62 251.98 2.49 276.30 12.91 296.79 5.57 265.57 21.05 291.30 9.86 290.36 20.41 298.51 16.32 288.34 12.86
9/26/2012 257.60 23.59 248.80 13.00 250.10 4.00 250.35 4.12 278.13 11.08 290.24 12.12 265.71 20.91 288.71 12.45 287.05 23.72 298.31 16.52 286.38 14.82
4/1/2013 255.48 25.71 249.48 12.32 251.45 2.65 251.82 2.65 277.43 11.78 289.71 12.65 264.71 21.91 289.81 11.35 291.05 19.72 297.51 17.32 285.31 15.89
9/25/2013 258.19 23.00 249.13 12.67 251.16 2.94 251.87 2.60 279.53 9.68 291.54 10.82 264.89 21.73 290.14 11.02 286.53 24.24 299.48 15.35 288.55 12.65
4/1/2014 257.99 23.20 253.44 8.36 251.51 2.59 252.22 2.25 279.23 9.98 299.76 2.60 264.99 21.63 294.26 6.90 291.53 19.24 303.71 11.12 289.60 11.60
9/29/2014 257.90 23.29 249.10 12.70 250.20 3.90 249.05 5.42 281.22 7.99 291.88 10.48 266.47 20.15 290.21 10.95 286.03 24.74 302.30 12.53 287.90 13.30
3/31/2015 258.21 22.98 253.21 8.59 251.60 2.50 252.16 2.31 280.71 8.50 299.85 2.51 265.67 20.95 294.53 6.63 291.19 19.58 303.58 11.25 289.59 11.61
10/26/2015 257.39 23.80 248.16 13.64 250.12 3.98 249.47 5.00 285.91 3.30 290.90 11.46 266.33 20.29 289.18 11.98 287.03 23.74 302.25 12.58 286.19 15.01
3/30/2016 257.93 23.26 251.00 10.80 251.34 2.76 251.59 2.88 282.25 6.96 296.24 6.12 265.92 20.70 293.47 7.69 292.56 18.21 304.77 10.06 289.58 11.62
9/27/2016 257.69 23.50 248.70 13.10 250.48 3.62 250.63 3.84 282.45 6.76 292.24 10.12 266.25 20.37 290.26 10.90 288.20 22.57 303.52 11.31 287.38 13.82
MEAN 256.61 24.58 249.79 12.01 250.34 3.76 251.11 3.36 276.96 12.25 293.89 8.47 264.66 21.96 289.61 11.55 287.66 23.11 300.18 14.65 287.98 13.22
MAXIMUM 266.28 43.87 253.44 14.04 251.91 12.23 252.28 7.64 285.91 19.47 301.86 14.52 268.15 28.95 294.53 17.88 292.56 30.00 304.77 19.01 291.03 15.89
MINIMUM 237.32 14.91 247.76 8.36 241.87 2.19 246.83 2.19 269.74 3.30 287.84 0.50 257.67 18.47 283.28 6.63 280.77 18.21 295.82 10.06 285.31 10.17
Notes:
1. ft AMSL = feet above mean sea level.
2. -- = not measured or no data
3. TOC = top of casing
4. NI = not installed
5. MW = monitoring well
6. TOC and Water Elevation Data for dates prior to March 2007 from historical G.N. Richardson & Associates, Inc. Ground and Surface Water Monitoring Reports .
7. *MW-2T and MW-6T are replacement well installations for MW-2 and MW-6, respectively.
8. **TOC Elevation for MW-10 is listed as both 296.35 feet AMSL in the Hutchinson Group, Ltd. data and 301.16 feet AMSL in the Richardson data from the same
sampling periods. The latest TOC elevation is used for this table.
9. It appears that MW-2T,MW-6T,and MW-10 were re-surveyed by G.N. Richardson & Associates, Inc. The TOC data from the most recent reports are
used in this table.
10. Water level data for MW-2T from 9/23/2003 and 3/20/2007 and for MW-4 from 11/3/2000 appear to be anomalous and were not included
in the mean, maximum, and minimum groundwater calculations.
11. Wells MW-1 and MW-9 were decomissioned in 2008 during site construction activities.
12. The elevations for MW-2T are unchanged since the inner casing was replaced after well was damaged.
13. Approval was received from NCDENR on 3-3-11 to monitor MW-12 for water levels only and to decommission MW-13 (decommissioned on 5-2-11).
302.36 286.62 301.16 310.77281.19 261.80 254.10 254.47 289.21
Monitoring Well
TABLE 1
Summary of Historical Groundwater Elevation Data
Red Rock Disposal, LLC C&D Landfill, Permit No. 92-28
Wake County, North Carolina
314.83 301.20
MW-14MW-12MW-11MW-4MW-3MW-2T*MW-10**MW-8MW-7MW-6T*MW-5
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Red Rock Disposal, LLC C&D Landfill, Permit No. 92-28
Wake County, North Carolina
Gradient
Calculation
Segment
Flow
Direction
Gradient
Segment Length
(feet)
Gradient
Segment Elevations
(feet)
Horizontal
Gradient, i
(feet)
Effective
Porosity, ne
Hydraulic
Conductivity, K
(cm/sec)
Velocity, Vgw
(feet/year)
300
280
300
260
290
250
Notes: 1. Horizontal velocities based on the modified Darcy equation Vgw = Ki/ne.2. Values for K and ne were based on mean values for MW-1, MW-3, MW-5 and MW-10 and
hydrogeologic data collected by G.N. Richardson & Associates, Inc. Values for ne also based on typical effective
porosities for similar hydrogeologic conditions as discussed in the 1983 U.S. Dept of Interior and U.S.G.S.
publication Basic Ground-Water Hydrology, Water-Supply Paper 2220, by Ralph C. Heath.
TABLE 2
Summary of Estimated Horizontal Flow Velocities
September 2016
i 1 510 0.10 302.520.0007450.0392
i 2
i 3
SE
SSE
SSE
1361
1924
0.0294
0.0208
226.46
160.24
0.10
0.10
0.000745
0.000745
December 2016 Page 1 of 1 Project No. 0739603516
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Northing Easting
MW-2T 9/29/2001 673949.63 2029330.92 --281.19 2 82 --------Active
MW-3 10/19/2000 673404.42 2029314.22 257.5 261.80 2 31.5 17-27 240.5-230.5 5.00 Bedrock Active
MW-4 10/11/2000 673139.11 2030104.02 251.76 254.10 2 17 5-15 246.76-236.76 6.00 PWR/Bedrock Active
MW-5 10/12/2000 673672.17 2030685.82 252.04 254.47 2 15.5 4-14 248.04-238.04 11.00 Saprolite Active
MW-6T 10/29/2001 676625.91 2030732.10 287.38 289.21 2 45 35-45 252.38-242.38 10.00 Bedrock Active
MW-7 10/17/2000 676615.29 2030029.53 300.14 302.36 2 20.5 8-18 292.14-282.14 10.30 PWR/Bedrock Water Levels Only
MW-8 10/18/2000 676615.29 2030029.53 283.58 286.62 2 33.5 23-33 260.58-250.58 33.50 Saprolite Water Levels Only
MW-10 10/18/2000 677194.05 2031353.05 --301.16 2 34 11-31 --17.00 Saprolite/PWR/Bedrock Active
MW-11 8/12/2003 677194.05 2031353.05 308.17 310.77 2 50 40-50 268.17-258.17 12.00 Bedrock Active
MW-12 8/11/2003 675723.77 2029012.40 312.04 314.83 2 28.5 17-27 295.04-285.04 8.00 Bedrock Water Levels Only
MW-14 8/12/2003 674749.52 2028576.82 298.24 301.20 2 32 22-32 276.24-266.24 8.00 Bedrock Active
Notes:1. ft AMSL = feet above mean sea level
2. ft BGS = feet below ground surface
3. NA = not drilled to auger refusal
4. -- = no data available
5. PWR = partially weathered rock
6. Unless otherwise noted, well construction information given by G.N. Richardson & Associates, Inc. & The Hutchinson Group, Ltd. hydrogeologic data, including
previous Groundwater Monitoring Reports and May 2001 and Oct 2003 Water Quality Monitoring Plans.
7. MW-2T & MW-6T are replacement wells for MW-2 and MW-6 and have been included as part of the monitoring well network since the April 2001 sampling event.
8. Well depths for MW-2T, MW-3, MW-4, MW-5, and MW-10 were based on Golder's March 2007 field measurements.
9. The elevation for the top of casing of MW-2T remains unchanged since the inner casing was replaced after well was damaged.
10. Approval was received from NCDENR on 3-3-11 to monitor MW-12 for water levels only and to decommission MW-13 (decommissioned on 5-2-11).
11. Northing and easting coordinates were taken based on locations as determined in AutoCAD.
Geology of Screened
Interval
TABLE 3
Summary of Well Construction Information
Red Rock Disposal, LLC C&D Landfill, Permit No. 92-28
Wake County, North Carolina
Well
Identification
Construction
Date
Ground Surface
Elevation
(ft AMSL)
Measuring Point
Elevation
(ft AMSL)
Well
Depth
(feet)
Well
Diameter
(inches)
Screened
Interval
(ft bgs)
Screened
Interval
(ft AMSL)
Depth to
Bedrock
(ft bgs)
Well
Status
Coordinates
December 2016 Page 1 of 6 Project No. 0739603516
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MW-1 MW-10 MW-2T(1)MW-3 MW-4 MW-5 MW-6T(1)MW-11 MW-12 MW-13 MW-14
Antimony ug/L 10/31/01 --30 ND ----ND ND ND ----------ND
SWS GPS = 1 ug/L ug/L 06/11/02 ----------------------------
EPA MCL = 6 ug/L ug/L 11/01/02 ----------------------------
ug/L 03/06/03 ----------------------------
ug/L 09/23/03 ----------------------------
ug/L 03/11/04 ----------------------------
ug/L 09/23/04 ----------------------------
ug/L 03/10/05 ----------------------------
ug/L 09/22/05 ----------------------------
ug/L 03/06/06 ----------------------------
ug/L 09/19/06 ----------------------------
ug/L 03/21/07 --6 --ND 1.09 J ND ND 0.60 J ND --------ND
ug/L 09/28/07 --6 --ND ND ND ND ND ND --------ND
ug/L 03/25/08 --6 --ND ND ND ND ND ND ND --ND ND ND
ug/L 09/29/08 --6 --ND ND ND ND ND ND ND ND ND ND ND
ug/L 03/30/09 --6 --ND ND ND ND ND ND ND ND ND ND ND
ug/L 09/29/09 --6 --ND ND 0.0950 J 0.132 J 0.0950 J ND ND ND ND ND ND
ug/L 03/30/10 --6 --ND ND ND ND ND ND ND ND ND ND ND
ug/L 09/29/10 --6 --ND ND ND ND 0.220 J ND ND ND ND ND ND
ug/L 04/06/11 --6 --ND ND ND ND ND ND ND ----ND ND
ug/L 09/28/11 --6 --ND ND ND ND ND ND ND ----ND ND
ug/L 03/28/12 --6 --ND 0.404 J 0.390 J ND 0.821 J ND ND ----ND ND
ug/L 09/26/12 --6 --ND ND ND ND 0.344 J ND ND ----ND ND
ug/L 04/01/13 --6 --ND ND ND ND 0.740 J ND ND ----ND ND
ug/L 09/25/13 --6 --ND ND ND ND ND ND ND ----ND ND
ug/L 04/01/14 --6 --ND ND ND ND 0.882 J ND ND ----ND ND
ug/L 09/29/14 0.220 6 --ND 0.401 B ND ND 1.27 B ND ND ----ND 0.421 J
ug/L 03/31/15 0.220 6 --ND 0.388 J ND ND 0.646 J ND ND ----ND ND
ug/L 10/26/15 0.220 6 --ND 0.954 J 0.450 J 0.242 J 2.94 J 0.381 J ND ----ND ND
ug/L 03/30/16 0.220 6 --ND ND ND ND ND ND ND ----ND ND
ug/L 09/27/16 0.220 6 --ND ND ND ND 0.674 J ND ND ----ND ND
Arsenic ug/L 10/31/01 --10 ND ----ND ND ND ----------ND
NC 2L = 10 ug/L ug/L 06/11/02 --10 ND ND ND ND ND ND ND --------ND
EPA MCL =10 ug/L ug/L 11/01/02 --10 ND ND ND ND ND ND ND --------ND
ug/L 03/06/03 --10 ND ND ND ND ND ND ND --------ND
ug/L 09/23/03 --10 ND ND ND ND ND ND ND --------ND
ug/L 03/11/04 --10 ND ND ND ND ND ND ND --------ND
ug/L 09/23/04 --10 --ND ND ND ND ND ND --------ND
ug/L 03/10/05 --10 --ND ND ND ND ND ND --------ND
ug/L 09/22/05 --10 --ND ND ND ND ND ND --------ND
ug/L 03/06/06 --10 --ND ND ND ND ND ND --------ND
ug/L 09/19/06 --10 --ND ND ND ND ND 17 --------ND
ug/L 03/21/07 --10 --ND ND ND 4.8 J ND ND --------ND
ug/L 09/28/07 --10 --ND ND ND ND ND ND --------ND
ug/L 03/25/08 --10 --ND ND ND 2.7 J ND ND ND --ND ND ND
ug/L 09/29/08 --10 --ND ND ND ND ND ND ND ND ND ND ND
ug/L 03/30/09 --10 --ND ND ND ND ND ND ND ND ND ND ND
ug/L 09/29/09 --10 --2.89 J 4.61 J 6.02 J ND 4.20 J 8.65 J ND 5.06 J ND ND ND
ug/L 03/30/10 --10 --ND ND ND 3.21 J 3.04 J ND ND ND ND ND ND
ug/L 09/29/10 --10 --ND ND ND ND ND ND ND ND 16.2 ND ND
ug/L 04/06/11 --10 --ND ND ND ND ND ND ND ----3.35 J ND
ug/L 09/28/11 --10 --ND ND ND 6.37 B ND ND 3.13 B ----ND 4.13 J
ug/L 03/28/12 --10 --ND ND 7.54 J ND ND 6.72 J ND ----ND ND
ug/L 09/26/12 --10 --ND ND ND ND ND ND ND ----ND 3.89 J
ug/L 04/01/13 --10 --ND ND ND ND ND ND ND ----ND ND
ug/L 09/25/13 --10 --ND 8.05 J ND ND ND ND 6.11 J ----ND ND
ug/L 04/01/14 --10 --ND ND ND ND ND ND ND ----ND ND
ug/L 09/29/14 5.40 10 --ND ND ND ND ND ND ND ----ND ND
ug/L 03/31/15 6.80 10 --ND ND ND ND ND ND ND ----ND ND
ug/L 10/26/15 6.80 10 --ND ND ND ND ND ND ND ----ND ND
ug/L 03/30/16 6.80 10 --ND ND ND ND ND ND ND ----ND ND
ug/L 09/27/16 6.80 10 --6.87 J ND 8.90 J ND ND 11.5 ND ----9.16 J ND
Barium ug/L 10/31/01 --500 909 ----1650 922 ND ----------ND
NC 2L = 700 ug/L ug/L 06/11/02 --500 ND ND 646 1547 ND ND 837 --------ND
EPA MCL = 2000 ug/L ug/L 11/01/02 --500 ND ND ND 1733 ND ND 787 --------ND
ug/L 03/06/03 --500 ND ND 535 1939 ND ND 936 --------ND
ug/L 09/23/03 --500 1046 ND ND 2090 ND ND 1066 --------ND
ug/L 03/11/04 --500 752 707 ND 1881 ND ND 966 --------ND
ug/L 09/23/04 --500 --ND ND 1830 ND ND 977 --------ND
ug/L 03/10/05 --500 --872 ND 2129 ND ND 1164 --------ND
ug/L 09/22/05 --500 --ND ND 1871 ND ND 1018 --------ND
ug/L 03/06/06 --500 --590 ND 1838 ND ND 1458 --------ND
ug/L 09/19/06 --500 --ND ND 2090 ND ND 1787 --------ND
ug/L 03/21/07 --100 --901 61.8 J 2080 24.7 J 226 1700 --------0.30 J
ug/L 09/28/07 --100 --488 59.1 J 1930 286 238 1800 --------0.30 J
ug/L 03/25/08 --100 --710 61.5 J 2010 37.6 J 91.0 J 1470 318 ----335 0.30 J
ug/L 09/29/08 --100 --1040 42.6 J 2090 33.6 J 108 1880 25.3 J 1010 1010 75.9 J ND
ug/L 03/30/09 --100 --999 41.5 J 1950 32.5 J 67.0 J 1950 23.9 J 329 329 61.4 J ND
ug/L 09/29/09 --100 --1100 40.1 J 1920 46.4 J 107 2180 53.8 J 858 858 97.2 J ND
ug/L 03/30/10 --100 --1120 40.4 J 1810 31.3 J 151 1880 16.0 J 553 553 86.7 J ND
ug/L 09/29/10 --100 --892 30.4 J 1770 28.4 J 103 1420 13.4 J 561 561 57.2 J ND
ug/L 09/29/10 --100 ----------------------ND
ug/L 04/06/11 --100 --1080 41.2 J 2020 37.4 J 186 2040 16.3 J ----68.5 J ND
ug/L 09/28/11 --100 --1410 36.3 J 2060 33.2 J 137 2230 16.0 J ----69.5 J ND
ug/L 03/28/12 --100 --974 39.7 J 2100 19.4 J 125 2250 15.4 J ----70.7 J ND
ug/L 09/26/12 --100 --1350 38.0 J 2080 18.0 J 95.9 J 2420 14.9 J ----66.6 J ND
ug/L 04/01/13 --100 --1120 41.8 J 2030 19.8 J 110 2280 15.1 J ----76.8 J 1.16 J
ug/L 09/25/13 --100 --1180 33.7 J 2080 17.4 J 92.3 J 2390 17.7 J ----71.3 J ND
ug/L 04/01/14 --100 --996 38.7 J 2120 17.6 J 78.2 J 2370 16.4 J ----72.6 J 1.29 J
ug/L 09/29/14 1.00 100 --1410 34.2 J 2230 18.4 J 137 2540 18.6 J ----70.6 J ND
(Dissolved)ug/L 09/29/14 1.00 100 ------2150 ----2410 ----------
ug/L 03/31/15 1.00 100 --1030 46.6 J 2380 24.9 J 143 2810 16.3 J ----78.0 J ND
(Dissolved)ug/L 03/31/15 1.00 100 ------1970 ----2170 ----------
ug/L 10/26/15 1.00 100 --1180 35.5 J 2220 19.3 J 107 2440 15.4 J ----70.3 J ND
ug/L 03/30/16 1.00 100 --731 35.6 J 2230 19.8 J 122 2600 16.6 J ----71.3 J ND
ug/L 09/27/16 1.00 100 --1170 35.0 J 2150 31.7 J 88.8 J 2440 16.2 J ----66.1 J 1.74 J
Beryllium ug/L 10/31/01 --2 ND ----ND 4 ND ----------ND
SWS GPS = 4 ug/L ug/L 06/11/02 ----------------------------
EPA MCL = 4 ug/L ug/L 11/01/02 ----------------------------
ug/L 03/06/03 ----------------------------
ug/L 09/23/03 ----------------------------
ug/L 03/11/04 ----------------------------
ug/L 09/23/04 ----------------------------
ug/L 03/10/05 ----------------------------
ug/L 09/22/05 ----------------------------
ug/L 03/06/06 ----------------------------
ug/L 09/19/06 ----------------------------
ug/L 03/21/07 --1 --ND ND ND ND ND ND --------ND
ug/L 09/28/07 --1 --ND ND ND ND ND ND --------ND
ug/L 03/25/08 --1 --ND ND ND ND ND ND ND --ND ND ND
ug/L 09/29/08 --1 --ND ND ND ND ND ND ND ND ND ND 0.1 J
ug/L 03/30/09 --1 --ND ND ND 0.12 J ND ND ND ND 0.20 J ND ND
ug/L 09/29/09 --1 --ND ND ND 0.109 B 0.437 B ND ND ND 0.464 B ND 0.133 J
ug/L 03/30/10 --1 --ND ND ND 0.137 J 0.291 J ND ND ND 0.317 J ND ND
ug/L 09/29/10 --1 --ND ND ND 0.216 J 0.640 J ND ND ND 2.45 ND ND
ug/L 09/29/10 --1 ------------------0.223 J --ND
ug/L 04/06/11 --1 --ND ND ND 0.174 J 1.29 ND ND ----ND ND
ug/L 09/28/11 --1 --ND ND ND 0.127 J 0.212 J ND ND ----ND ND
ug/L 03/28/12 --1 --ND ND ND 0.118 J 0.187 J ND ND ----ND ND
ug/L 09/26/12 --1 --ND ND ND ND ND ND ND ----ND ND
ug/L 04/01/13 --1 --ND ND ND ND 0.294 J ND ND ----ND ND
ug/L 09/25/13 --1 --ND ND ND 0.101 J ND ND ND ----ND ND
ug/L 04/01/14 --1 --ND ND ND ND ND ND ND ----ND ND
ug/L 09/29/14 0.100 1 --ND ND ND ND 0.434 J ND ND ----ND ND
ug/L 03/31/15 0.100 1 --ND ND ND ND ND ND ND ----ND ND
ug/L 10/26/15 0.100 1 --ND ND ND ND 0.281 J ND ND ----ND ND
ug/L 03/30/16 0.100 1 --ND ND ND ND ND ND ND ----ND ND
ug/L 09/27/16 0.100 1 --ND ND ND ND ND ND ND ----ND ND
Blanks
Upgradient
Compliance WellsSWS
Reporting
Limit
Downgradient Compliance Wells
MDL
TABLE 4
Summary of Groundwater Monitoring Results
Detected Constituents
Red Rock Disposal, LLC C&D Landfill, Permit No. 92-28
Wake County, North Carolina
Detected Monitoring
Constituents/Parameters
Sample
Date
Reporting
Units
December 2016 Page 2 of 6 Project No. 0739603516
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MW-1 MW-10 MW-2T(1)MW-3 MW-4 MW-5 MW-6T(1)MW-11 MW-12 MW-13 MW-14
Blanks
Upgradient
Compliance WellsSWS
Reporting
Limit
Downgradient Compliance Wells
MDL
TABLE 4
Summary of Groundwater Monitoring Results
Detected Constituents
Red Rock Disposal, LLC C&D Landfill, Permit No. 92-28
Wake County, North Carolina
Detected Monitoring
Constituents/Parameters
Sample
Date
Reporting
Units
Cadmium ug/L 10/31/01 --1 ND ----ND ND ND ----------ND
NC 2L = 2 ug/L ug/L 06/11/02 --1 ND ND ND ND ND ND ND --------ND
EPA MCL = 5 ug/L ug/L 11/01/02 --1 ND ND ND ND ND ND ND --------ND
ug/L 03/06/03 --1 ND ND ND ND ND ND ND --------ND
ug/L 09/23/03 --1 ND ND ND ND ND ND ND --------ND
ug/L 03/11/04 --1 ND ND 7 ND ND ND ND --------ND
ug/L 09/23/04 --1 --ND 1 ND ND ND ND --------ND
ug/L 03/10/05 --1 --ND 3 ND ND ND ND --------ND
ug/L 09/22/05 --1 --ND 7 ND ND ND 2 --------ND
ug/L 03/06/06 --1 --ND 1 ND ND ND ND --------ND
ug/L 09/19/06 --1 --ND ND ND ND ND ND --------ND
ug/L 03/21/07 --1 --ND 0.80 J ND ND ND ND --------ND
ug/L 09/28/07 --1 --ND ND ND ND ND ND --------ND
ug/L 03/25/08 --1 --ND ND ND ND ND ND ND --ND ND ND
ug/L 09/29/08 --1 --ND ND ND ND ND ND ND ND ND ND ND
ug/L 03/30/09 --1 --0.17 J 0.29 J ND ND 0.22 J ND ND ND 0.10 J ND ND
ug/L 09/29/09 --1 --ND ND ND 0.585 J 0.658 J ND ND ND ND ND ND
ug/L 03/30/10 --1 --ND ND ND ND 0.760 J ND ND 0.431 J ND ND ND
ug/L 09/29/10 --1 --ND ND ND ND 1.07 ND ND ND ND ND ND
ug/L 04/06/11 --1 --ND ND ND ND ND ND ND ----ND ND
ug/L 09/28/11 --1 --ND ND ND 1.41 0.410 J ND ND ----ND ND
ug/L 03/28/12 --1 --ND ND ND ND ND ND ND ----ND ND
ug/L 09/26/12 --1 --ND ND ND 0.504 J ND ND ND ----ND ND
ug/L 04/01/13 --1 --ND 0.462 J ND ND ND ND ND ----ND ND
ug/L 09/25/13 --1 --ND ND ND ND ND ND ND ----ND ND
ug/L 04/01/14 --1 --ND ND ND ND ND ND ND ----ND ND
ug/L 09/29/14 0.360 1 --ND ND ND ND 0.948 J ND ND ----ND ND
ug/L 03/31/15 0.360 1 --ND ND ND ND ND ND ND ----ND ND
ug/L 10/26/15 0.360 1 --ND ND ND ND 0.536 J ND ND ----ND ND
ug/L 03/30/16 0.360 1 --ND ND ND ND ND ND ND ----ND ND
ug/L 09/27/16 0.360 1 --ND ND ND ND 0.581 J ND ND ----ND ND
Chromium ug/L 10/31/01 --10 ND ----ND ND ND ----------ND
NC 2L = 10 ug/L ug/L 06/11/02 --10 ND ND 58 ND 29 ND ND --------ND
EPA MCL = 100 ug/L ug/L 11/01/02 --10 ND ND ND ND ND ND ND --------ND
ug/L 03/06/03 --10 ND ND ND ND ND ND ND --------ND
ug/L 09/23/03 --10 ND ND ND ND ND ND ND --------ND
ug/L 03/11/04 --10 ND ND ND ND ND ND ND --------ND
ug/L 09/23/04 --10 --ND ND ND ND ND ND --------ND
ug/L 03/10/05 --10 --ND ND ND ND ND ND --------ND
ug/L 09/22/05 --10 --ND ND ND ND ND ND --------ND
ug/L 03/06/06 --10 --ND ND ND ND ND ND --------ND
ug/L 09/19/06 --10 --ND ND ND ND ND ND --------ND
ug/L 03/21/07 --10 --ND ND ND ND ND ND --------ND
ug/L 09/28/07 --10 --ND ND ND ND ND ND --------ND
ug/L 03/25/08 --10 --ND ND ND 3.8 J ND ND 2.8 J --6.5 J ND ND
ug/L 09/29/08 --10 --ND ND ND ND ND ND ND ND 3.1 J ND ND
ug/L 03/30/09 --10 --ND 0.7 J ND 1.2 J ND 1.3 J ND ND ND ND ND
ug/L 09/29/09 --10 --1.91 J 1.21 J 3.69 J 2.34 J 2.40 J 3.91 J 2.45 J 2.95 J 2.89 J 1.28 J ND
ug/L 03/30/10 --10 --ND 1.95 J ND 2.05 J 1.68 J 1.52 J ND 3.90 J ND 1.08 J ND
ug/L 09/29/10 --10 --ND ND 2.60 J 1.32 J 1.89 J ND ND 3.76 J 11.5 ND ND
ug/L 09/29/10 --10 ------------------ND --ND
ug/L 04/06/11 --10 --ND ND 5.62 J 1.06 J 4.89 J 2.84 J ND ----ND ND
ug/L 09/28/11 --10 --1.19 J 1.28 J 26.4 1.62 J 7.72 J 4.70 J ND ----ND ND
ug/L 03/28/12 --10 --ND ND 3.84 J ND 12.0 2.48 J ND ----ND ND
(Verification Event)ug/L 05/23/12 --10 ----------6.49 J ----------ND
ug/L 09/26/12 --10 --ND ND 3.87 J ND 5.11 J 3.09 J ND ----ND ND
ug/L 04/01/13 --10 --ND 1.81 J 2.50 J ND 4.17 J 1.71 J ND ----ND ND
ug/L 09/25/13 --10 --9.01 J ND ND ND 5.07 J ND ND ----ND ND
ug/L 04/01/14 --10 --ND ND 2.43 J ND 3.43 J 2.18 J ND ----ND ND
ug/L 09/29/14 1.40 10 --ND ND 2.88 J ND 90.9 2.44 J ND ----ND ND
(Dissolved)ug/L 09/29/14 1.40 10 ----------1.60 ------------
ug/L 03/31/15 1.40 10 --ND ND 2.51 J ND 6.80 J 3.17 J ND ----ND ND
ug/L 10/26/15 1.40 10 --ND ND 13.5 ND 5.52 J 2.96 J ND ----ND ND
ug/L 03/30/16 1.40 10 --ND ND 22.3 ND 7.04 J 2.68 J ND ----ND ND
ug/L 09/27/16 1.40 10 --ND ND 5.42 J ND 2.41 J ND ND ----ND ND
Cobalt ug/L 10/31/01 --10 ND ----ND ND ND ----------ND
SWS GPS = 1 ug/L ug/L 06/11/02 ----------------------------
No EPA MCL ug/L 11/01/02 ----------------------------
ug/L 03/06/03 ----------------------------
ug/L 09/23/03 ----------------------------
ug/L 03/11/04 ----------------------------
ug/L 09/23/04 ----------------------------
ug/L 03/10/05 ----------------------------
ug/L 09/22/05 ----------------------------
ug/L 03/06/06 ----------------------------
ug/L 09/19/06 ----------------------------
ug/L 03/21/07 --10 --ND ND ND 3.1 J 30.7 ND --------ND
ug/L 09/28/07 --10 --ND ND ND 3.0 J 21.1 ND --------ND
ug/L 03/25/08 --10 --ND ND ND 3.3 J 2.9 J ND 3.4 J --2.4 J 3.8 J ND
ug/L 09/29/08 --10 --ND ND ND 7.1 J 20.5 ND ND ND ND ND ND
ug/L 03/30/09 --10 --ND ND ND 1.6 J 1.1 J 0.7 J ND 0.8 J 2.3 J ND ND
ug/L 09/29/09 --10 --ND ND ND 16.1 9.24 J ND ND 2.15 J 2.03 J ND ND
ug/L 03/30/10 --10 --ND ND ND ND 2.43 J ND ND 1.47 J 2.33 J ND ND
ug/L 09/29/10 --10 --ND ND 1.15 J ND 2.12 J ND ND 1.11 J 9.38 J ND ND
ug/L 04/06/11 --10 --ND ND ND ND 8.19 J ND ND ----ND ND
ug/L 09/28/11 --10 --ND ND ND ND 2.44 J ND ND ----ND ND
ug/L 03/28/12 --10 --ND ND ND ND 1.77 J ND ND ----ND ND
ug/L 09/26/12 --10 --ND ND ND ND ND ND ND ----ND ND
ug/L 04/01/13 --10 --ND ND ND ND ND ND ND ----ND ND
ug/L 09/25/13 --10 --ND ND ND ND ND ND ND ----ND ND
ug/L 04/01/14 --10 --ND ND ND ND ND ND ND ----ND ND
ug/L 09/29/14 1.10 10 --ND ND ND ND 20.9 ND ND ----ND ND
ug/L 03/31/15 1.10 10 --ND ND ND ND 1.39 J ND ND ----ND ND
ug/L 10/26/15 1.10 10 --ND ND ND ND ND ND ND ----ND ND
ug/L 03/30/16 1.10 10 --ND ND 2.83 J ND ND ND ND ----ND ND
ug/L 09/27/16 1.10 10 --ND ND ND ND 1.30 J ND ND ----ND ND
Copper ug/L 10/31/01 --200 ND ----ND ND ND ----------ND
NC 2L = 1000 ug/L ug/L 06/11/02 ----------------------------
EPA MCL = 1300 ug/L#ug/L 11/01/02 ----------------------------
ug/L 03/06/03 ----------------------------
ug/L 09/23/03 ----------------------------
ug/L 03/11/04 ----------------------------
ug/L 09/23/04 ----------------------------
ug/L 03/10/05 ----------------------------
ug/L 09/22/05 ----------------------------
ug/L 03/06/06 ----------------------------
ug/L 09/19/06 ----------------------------
ug/L 03/21/07 --10 --ND ND ND ND ND ND --------0.60 J
ug/L 09/27/07 --10 --ND ND ND ND ND ND --------ND
ug/L 03/25/08 --10 --ND ND ND ND ND ND 52.4 --ND ND 0.60 J
ug/L 09/29/08 --10 --ND ND ND ND ND ND ND ND 2.50 J ND ND
ug/L 03/30/09 --10 --ND ND ND 1.24 B ND ND 1.14 B ND 1.38 B ND 1.39 J
ug/L 09/29/09 --10 --ND ND ND 3.00 J ND ND 4.19 J ND 5.57 J ND ND
ug/L 03/30/10 --10 --ND ND ND ND ND ND ND ND ND ND ND
ug/L 09/29/10 --10 --ND ND ND ND 2.81 J ND ND ND 8.76 J ND ND
ug/L 04/06/11 --10 --ND 2.80 B ND 2.02 B 3.37 B ND ND ----ND 2.07 J
ug/L 09/28/11 --10 --ND ND ND 3.29 J 4.44 J ND ND ----1.65 J ND
ug/L 03/28/12 --10 --ND ND ND ND ND ND ND ----ND ND
ug/L 09/26/12 --10 --ND ND ND 2.19 J ND ND ND ----ND ND
ug/L 04/01/13 --10 --ND 3.19 J ND ND 3.25 J ND ND ----ND ND
ug/L 09/25/13 --10 --ND ND ND ND ND ND ND ----ND ND
ug/L 04/01/14 --10 --ND ND ND ND ND ND ND ----ND ND
ug/L 09/29/14 1.60 10 --ND ND ND ND 4.54 J ND ND ----ND ND
ug/L 03/31/15 1.60 10 --ND ND ND ND ND ND ND ----ND ND
ug/L 10/26/15 1.60 10 --ND ND ND ND ND ND ND ----ND ND
ug/L 03/30/16 1.60 10 --ND 1.71 J ND ND ND ND ND ----ND ND
ug/L 09/27/16 1.60 10 --3.12 B 4.74 B 5.28 B 3.17 B 5.01 B 5.48 B 4.60 B ----3.22 B 4.36 J
December 2016 Page 3 of 6 Project No. 0739603516
G:\PROJECTS\Waste Industries\Red Rock\Groundwater\GWMR\Sept 2016\Tables\Red Rock Tables September 2016.xlsx
MW-1 MW-10 MW-2T(1)MW-3 MW-4 MW-5 MW-6T(1)MW-11 MW-12 MW-13 MW-14
Blanks
Upgradient
Compliance WellsSWS
Reporting
Limit
Downgradient Compliance Wells
MDL
TABLE 4
Summary of Groundwater Monitoring Results
Detected Constituents
Red Rock Disposal, LLC C&D Landfill, Permit No. 92-28
Wake County, North Carolina
Detected Monitoring
Constituents/Parameters
Sample
Date
Reporting
Units
Lead ug/L 10/31/01 --10 ND ----ND 14 ND ----------ND
NC 2L = 15 ug/L ug/L 06/11/02 --10 ND ND ND ND 17 ND ND --------ND
EPA MCL = 15 ug/L#ug/L 11/01/02 --10 ND ND ND ND ND ND ND --------ND
ug/L 03/06/03 --10 ND ND ND ND ND ND ND --------ND
ug/L 09/23/03 --10 ND ND ND ND ND ND ND --------ND
ug/L 03/11/04 --10 ND ND ND ND ND ND ND --------ND
ug/L 09/23/04 --10 --ND ND ND ND ND ND --------ND
ug/L 03/10/05 --10 --ND ND ND ND ND ND --------ND
ug/L 09/22/05 --10 --ND ND ND ND ND ND --------ND
ug/L 03/06/06 --10 --ND ND ND ND ND ND --------ND
ug/L 09/19/06 --10 --ND ND ND ND ND ND --------ND
ug/L 03/21/07 --10 --ND ND 2.4 B ND 6.0 B ND --------2.7 J
ug/L 09/28/07 --10 --ND ND ND 15.9 ND ND --------ND
ug/L 03/25/08 --10 --ND ND ND ND ND ND 58.1 --4.6 J 15.5 ND
ug/L 09/29/08 --10 --ND ND ND 2.3 J ND ND ND ND 5.9 J ND ND
ug/L 03/30/09 --10 --2.6 J ND ND 1.9 J 3.0 J 2.2 J ND 1.7 J 1.8 J ND ND
ug/L 09/29/09 --10 --ND ND ND 2.74 J ND ND 3.66 J ND 5.25 J ND ND
ug/L 03/30/10 --10 --ND 51.7 ND 2.95 J 2.03 J ND ND 2.56 J 3.10 J 2.70 J ND
ug/L 09/29/10 --10 --ND 35.3 ND ND ND ND ND 3.07 J 56.7 ND ND
ug/L 09/29/10 --10 ------------------ND --ND
ug/L 04/06/11 --10 --ND 7.29 J ND ND ND ND ND ----2.09 J ND
ug/L 09/28/11 --10 --ND 16.5 ND ND ND ND ND ----ND ND
ug/L 03/28/12 --10 --ND 18.4 ND ND ND ND ND ----ND ND
ug/L 09/26/12 --10 --1.96 J 4.77 J ND ND ND ND ND ----ND ND
ug/L 04/01/13 --10 --ND 2.59 J ND ND ND ND ND ----ND ND
ug/L 09/25/13 --10 --ND 14.1 ND 2.30 J ND ND ND ----ND ND
ug/L 04/01/14 --10 --ND 11.8 ND ND ND ND ND ----ND ND
ug/L 09/29/14 2.10 10 --ND 12.6 ND ND ND ND ND ----ND ND
ug/L 03/31/15 3.10 10 --ND 10.5 ND ND ND ND ND ----ND ND
ug/L 10/26/15 3.10 10 --ND 3.65 J ND ND ND ND ND ----ND ND
ug/L 03/30/16 3.10 10 --ND ND ND ND ND ND ND ----ND ND
ug/L 09/27/16 3.10 10 --ND 6.48 J ND 3.79 J 3.10 J ND ND ----ND ND
Mercury ug/L 10/31/01 --0.5 ND ----ND ND ND ----------ND
NC 2L = 1 ug/L ug/L 06/11/02 --1 ND ND ND ND ND ND ND --------ND
EPA MCL = 2 ug/L ug/L 11/01/02 --1 ND ND ND ND ND ND ND --------ND
ug/L 03/06/03 --1 ND ND ND ND ND ND ND --------ND
ug/L 09/23/03 --1 ND ND ND ND ND ND ND --------ND
ug/L 03/11/04 --0.5 ND ND ND ND ND ND ND --------ND
ug/L 09/23/04 --1 --ND ND ND ND ND ND --------ND
ug/L 03/10/05 --1 --ND ND ND ND ND ND --------ND
ug/L 09/22/05 --1 --ND ND ND ND ND ND --------ND
ug/L 03/06/06 --1 --ND ND ND ND ND ND --------ND
ug/L 09/19/06 --1 --ND ND ND ND ND ND --------ND
ug/L 03/21/07 --0.2 --ND ND ND ND ND ND --------ND
ug/L 09/27/07 --0.2 --ND ND ND ND ND ND --------ND
ug/L 03/25/08 --0.2 --ND ND ND ND ND ND 0.16 J ----0.59 ND
ug/L 09/29/08 --0.2 --ND ND ND ND ND ND ND ND ND ND ND
ug/L 03/30/09 --0.2 --ND ND ND ND ND ND ND ND ND ND ND
ug/L 09/29/09 --0.2 --ND ND ND ND ND ND ND ND ND ND ND
ug/L 03/30/10 --0.2 --ND ND ND ND ND ND ND ND ND ND ND
ug/L 09/29/10 --0.2 --ND ND ND ND ND ND ND ND ND ND ND
ug/L 04/06/11 --0.2 --ND ND ND ND ND ND ND ----ND ND
ug/L 09/28/11 --0.2 --ND ND ND ND ND ND ND ----ND ND
ug/L 03/28/12 --0.2 --ND ND ND ND ND ND ND ----ND ND
ug/L 09/26/12 --0.2 --ND ND ND ND ND ND ND ----ND ND
ug/L 04/01/13 --0.2 --ND ND ND ND ND ND ND ----ND ND
ug/L 09/25/13 --0.2 --ND ND ND ND ND ND ND ----ND ND
ug/L 04/01/14 --0.2 --ND ND ND ND ND ND ND ----ND ND
ug/L 09/29/14 0.170 0.2 --ND ND ND ND ND ND ND ----ND ND
ug/L 03/31/15 0.170 0.2 --ND ND ND ND ND ND ND ----ND ND
ug/L 10/26/15 0.170 0.2 --ND ND ND ND ND ND ND ----ND ND
ug/L 03/30/16 0.170 0.2 --ND ND ND ND ND ND ND ----ND ND
ug/L 09/27/16 0.170 0.2 --ND ND ND ND ND ND ND ----ND ND
Nickel ug/L 10/31/01 --50 ND ----ND ND ND ----------ND
NC 2L = 100 ug/L ug/L 06/11/02 ----------------------------
No EPA MCL ug/L 11/01/02 ----------------------------
ug/L 03/06/03 ----------------------------
ug/L 09/23/03 ----------------------------
ug/L 03/11/04 ----------------------------
ug/L 09/23/04 ----------------------------
ug/L 03/10/05 ----------------------------
ug/L 09/22/05 ----------------------------
ug/L 03/06/06 ----------------------------
ug/L 09/19/06 ----------------------------
ug/L 03/21/07 --50 --ND ND ND ND 2.3 J ND --------ND
ug/L 09/28/07 --50 --ND ND ND ND 5.3 J ND --------ND
ug/L 03/25/08 --50 --ND 2.9 J ND ND ND ND ND --2.7 J ND ND
ug/L 09/29/08 --50 --ND 1.9 J ND ND ND ND ND 7.7 J 3.7 J ND ND
ug/L 03/30/09 --50 --0.7 B 0.8 B 1.6 B 1.1 B 1.2 B 1.2 B 0.6 B 2.7 B 0.8 B ND 0.6 J
ug/L 09/29/09 --50 --2.10 J ND 8.99 J 4.62 J 5.42 J 6.39 J 5.35 J 9.92 J 3.14 J ND ND
ug/L 03/30/10 --50 --ND 2.88 J 2.42 J ND 4.08 J 2.63 J ND 8.42 J ND ND ND
ug/L 09/29/10 --50 --ND ND 48.1 J ND 8.26 J ND ND 5.18 J ND ND ND
ug/L 04/06/11 --50 --ND ND 91.5 ND 32.2 J ND ND ----ND ND
ug/L 09/28/11 --50 --ND 2.89 J 18.8 J 2.43 J 76.6 2.78 J ND ----ND ND
ug/L 03/28/12 --50 --ND 2.85 J 4.66 J ND 7.90 J ND ND ----ND ND
ug/L 09/26/12 --50 --ND ND 3.37 J ND 13.8 J ND ND ----ND ND
ug/L 04/01/13 --50 --ND ND 3.66 J ND 3.06 J ND ND ----ND ND
ug/L 09/25/13 --50 --8.60 J ND 3.72 J ND 5.12 J ND ND ----ND ND
ug/L 04/01/14 --50 --ND 1.99 J 3.01 J 1.86 J 1.88 J 1.95 J ND ----ND ND
ug/L 09/29/14 1.80 50 --ND ND 3.07 J ND 42.4 J ND ND ----ND ND
ug/L 03/31/15 1.80 50 --ND ND 3.83 J ND 5.21 J 2.67 J ND ----ND ND
ug/L 10/26/15 1.80 50 --ND ND 44.7 J ND 5.65 J 124 ND ----ND ND
(Dissolved)ug/L 10/26/15 1.80 50 ------------68.0 --------ND
ug/L 03/30/16 2.20 50 --ND ND 166 ND ND 81.1 ND ----ND ND
(Dissolved)ug/L 03/30/16 2.20 50 ------153 ----------------
(Verification Event)ug/L 05/18/16 2.20 50 ------122 ----------------
(Dissolved)ug/L 05/18/16 2.20 50 ------122 ----------------
ug/L 09/27/16 2.20 50 --ND ND 52.4 ND 8.57 J 29.5 J 2.20 J ----ND ND
Selenium ug/L 10/31/01 --20 ND ----ND ND ND ----------ND
NC 2L = 20 ug/L ug/L 06/11/02 --20 ND ND ND ND ND ND ND --------ND
EPA MCL = 50 ug/L ug/L 11/01/02 --20 ND ND ND ND ND ND ND --------ND
ug/L 03/06/03 --20 ND ND ND ND ND ND ND --------ND
ug/L 09/23/03 --20 ND ND ND ND ND ND ND --------ND
ug/L 03/11/04 --20 ND ND ND ND ND ND ND --------ND
ug/L 09/23/04 --20 --ND ND ND ND ND ND --------ND
ug/L 03/10/05 --20 --ND ND ND ND ND ND --------ND
ug/L 09/22/05 --20 --ND ND 22 ND ND ND --------ND
ug/L 03/06/06 --20 --ND ND 22 ND ND 23 --------ND
ug/L 09/19/06 --20 --ND ND 29 ND ND 47 --------ND
ug/L 03/21/07 --10 --ND ND ND 3.2 B ND ND --------2.5 J
ug/L 09/28/07 --10 --ND ND ND ND ND ND --------ND
ug/L 03/25/08 --10 --ND ND ND ND ND ND ND --ND ND ND
ug/L 09/29/08 --10 --ND ND ND ND ND ND ND ND ND ND ND
ug/L 03/30/09 --10 --ND ND ND ND ND ND ND ND ND ND ND
ug/L 09/29/09 --10 --ND ND ND 2.87 J ND ND ND ND ND ND ND
ug/L 03/30/10 --10 --ND ND ND ND ND ND ND ND ND ND ND
ug/L 09/29/10 --10 --ND ND ND ND ND ND ND ND ND ND ND
ug/L 04/06/11 --10 --ND ND ND ND ND ND ND ----ND ND
ug/L 09/28/11 --10 --ND ND ND ND ND ND ND ----ND ND
ug/L 03/28/12 --10 --2.83 (ND)B ND ND ND ND ND ND ----ND 3.32 (ND)J
ug/L 09/26/12 --10 --ND ND ND ND ND ND ND ----ND ND
ug/L 04/01/13 --10 --ND ND ND ND ND ND ND ----ND ND
ug/L 09/25/13 --10 --ND ND ND ND ND ND ND ----ND ND
ug/L 04/01/14 --10 --ND ND ND ND ND ND ND ----ND ND
ug/L 09/29/14 5.00 10 --ND ND ND ND ND ND ND ----ND ND
ug/L 03/31/15 5.00 10 --ND ND ND ND ND ND ND ----ND ND
ug/L 03/31/15 0.910 10 --ND ND ND ND ND ND ND ----ND ND
ug/L 10/26/15 0.910 10 --ND ND ND ND ND ND ND ----ND ND
ug/L 03/30/16 0.910 10 --ND ND ND ND ND ND ND ----ND ND
ug/L 09/27/16 6.20 10 --ND ND ND ND ND ND ND ----ND ND
December 2016 Page 4 of 6 Project No. 0739603516
G:\PROJECTS\Waste Industries\Red Rock\Groundwater\GWMR\Sept 2016\Tables\Red Rock Tables September 2016.xlsx
MW-1 MW-10 MW-2T(1)MW-3 MW-4 MW-5 MW-6T(1)MW-11 MW-12 MW-13 MW-14
Blanks
Upgradient
Compliance WellsSWS
Reporting
Limit
Downgradient Compliance Wells
MDL
TABLE 4
Summary of Groundwater Monitoring Results
Detected Constituents
Red Rock Disposal, LLC C&D Landfill, Permit No. 92-28
Wake County, North Carolina
Detected Monitoring
Constituents/Parameters
Sample
Date
Reporting
Units
Silver ug/L 10/31/01 --10 ND ----ND ND ND ----------ND
NC 2L= 20 ug/L ug/L 06/11/02 --10 ND ND ND ND ND ND ND --------ND
EPA MCL = 100 ug/L ug/L 11/01/02 --10 ND ND ND ND ND ND ND --------ND
ug/L 03/06/03 --10 ND ND ND ND ND ND ND --------ND
ug/L 09/23/03 --10 ND ND ND ND ND ND ND --------ND
ug/L 03/11/04 --10 ND ND ND ND ND ND ND --------ND
ug/L 09/23/04 --10 --ND ND ND ND ND ND --------ND
ug/L 03/10/05 --10 --ND ND ND ND ND ND --------ND
ug/L 09/22/05 --10 --ND ND ND ND ND ND --------ND
ug/L 03/06/06 --10 --ND ND ND ND ND ND --------ND
ug/L 09/19/06 --10 --ND ND ND ND ND ND --------ND
ug/L 03/21/07 --10 --ND ND ND ND ND ND --------ND
ug/L 09/27/07 --10 --ND ND ND ND ND ND --------ND
ug/L 03/25/08 --10 --ND ND ND ND ND ND 2.3 J ------ND
ug/L 09/29/08 --10 --ND ND ND ND ND ND ND ND ND ND ND
ug/L 03/30/09 --10 --1.3 J 1.5 J 3.6 J ND 1.5 J 4.3 J ND 1.4 J ND 1.4 J ND
ug/L 09/29/09 --10 --ND ND ND ND ND ND ND ND ND ND ND
ug/L 03/30/10 --10 --ND ND 2.96 J ND 2.27 J 5.62 J ND ND ND ND ND
ug/L 09/29/10 --10 --ND ND 2.17 J ND ND 4.10 J ND ND ND ND ND
ug/L 04/06/11 --10 --ND ND 1.92 J ND ND 7.15 J ND ----ND ND
ug/L 09/28/11 --10 --ND 5.83 J ND ND ND 54.5 (16.5)10.6 ----ND ND
ug/L 03/28/12 --10 --ND ND 2.80 J ND 1.92 J ND ND ----ND ND
ug/L 09/26/12 --10 --ND ND 3.16 J ND ND 7.51 J 2.64 J ----ND ND
ug/L 04/01/13 --10 --ND ND ND ND ND 2.61 J 4.21 J ----ND ND
ug/L 09/25/13 --10 --ND 2.23 J 2.09 J ND ND 30.5 2.20 J ----ND ND
ug/L 04/01/14 --10 --ND ND 2.20 J 2.05 J ND 2.37 J ND ----ND ND
ug/L 09/29/14 1.90 10 --ND 4.28 J ND ND 3.30 J 1.95 J ND ----70.4 ND
(Dissolved)ug/L 09/29/14 1.90 10 --------------------ND --
ug/L 03/31/15 1.90 10 --9.02 J ND ND ND ND ND ND ----ND ND
ug/L 10/26/15 1.90 10 --2.87 J ND 11.9 ND 3.13 J 9.88 J ND ----2.70 J ND
ug/L 03/30/16 1.90 10 --ND ND 2.83 J ND ND ND ND ----ND ND
ug/L 09/27/16 1.90 10 --ND ND ND ND ND ND ND ----ND ND
Thallium ug/L 10/31/01 --10 ND ----ND ND ND ----------ND
SWS GPS = 0.28 ug/L ug/L 06/11/02 ----------------------------
EPA MCL = 2 ug/L ug/L 11/01/02 ----------------------------
ug/L 03/06/03 ----------------------------
ug/L 09/23/03 ----------------------------
ug/L 03/11/04 ----------------------------
ug/L 09/23/04 ----------------------------
ug/L 03/10/05 ----------------------------
ug/L 09/22/05 ----------------------------
ug/L 03/06/06 ----------------------------
ug/L 09/19/06 ----------------------------
ug/L 03/21/07 --5.5 --ND ND ND ND 0.132 J ND --------ND
ug/L 09/28/07 --5.5 --0.042 B 0.043 B 0.045 B 0.101 B 0.072 B ND --------0.066 J
ug/L 03/25/08 --5.5 --ND ND ND 0.046 J 0.066 J ND 0.175 J --0.050 J 0.106 J ND
ug/L 09/29/08 --5.5 --ND 0.057 B 0.041 B 0.052 B 0.063 B ND 0.042 B ND 0.052 B ND 0.062 J
ug/L 03/30/09 --5.5 --ND ND ND ND ND ND ND ND ND ND ND
ug/L 09/29/09 --5.5 --ND ND ND ND ND ND ND ND ND ND 0.125 J
ug/L 03/30/10 --5.5 --ND ND ND 0.116 J ND ND ND ND ND ND ND
ug/L 09/29/10 --5.5 --ND ND ND ND ND ND ND ND ND ND ND
ug/L 04/06/11 --5.5 --ND ND ND ND ND ND ND ----ND ND
ug/L 09/28/11 --5.5 --ND ND ND ND ND ND ND ----ND ND
ug/L 03/28/12 --5.5 --ND ND ND ND ND ND ND ----ND ND
ug/L 09/26/12 --5.5 --ND ND ND ND ND ND ND ----ND ND
ug/L 04/01/13 --5.5 --ND ND ND ND ND ND ND ----ND ND
ug/L 09/25/13 --5.5 --ND ND ND ND ND ND ND ----ND ND
ug/L 04/01/14 --5.5 --0.121 J 0.371 J 0.134 J 0.357 J ND ND 0.199 J ----0.147 J ND
ug/L 09/29/14 0.110 5.5 --0.148 B 0.966 B 0.404 B 1.18 B ND ND 0.260 B ----0.227 B 0.253 J
ug/L 03/31/15 0.110 5.5 --ND 0.297 J ND ND ND ND ND ----ND ND
ug/L 10/26/15 0.110 5.5 --ND ND ND ND ND ND ND ----ND ND
ug/L 03/30/16 0.110 5.5 --ND ND ND 0.110 J ND ND ND ----ND ND
ug/L 09/27/16 0.110 6 --ND ND ND ND ND ND ND ----ND ND
Vanadium ug/L 10/31/01 --40 ND ----50 ND ND ----------ND
SWS GPS = 0.3 ug/L ug/L 06/11/02 ----------------------------
No EPA MCL ug/L 11/01/02 ----------------------------
ug/L 03/06/03 ----------------------------
ug/L 09/23/03 ----------------------------
ug/L 03/11/04 ----------------------------
ug/L 09/23/04 ----------------------------
ug/L 03/10/05 ----------------------------
ug/L 09/22/05 ----------------------------
ug/L 03/06/06 ----------------------------
ug/L 09/19/06 ----------------------------
ug/L 03/21/07 --25 --ND 17.4 J 22.9 J ND ND ND --------ND
ug/L 09/28/07 --25 --ND 3.2 J 29.6 23.2 J ND ND --------ND
ug/L 03/25/08 --25 --ND 3.6 J 25.5 1.7 J ND ND 72.9 --3.9 J 31.8 ND
ug/L 09/29/08 --25 --ND ND 24.6 J ND ND ND ND ND 5.7 J 8.1 J ND
ug/L 03/30/09 --25 --ND 2.3 J 41.3 3.4 J ND ND 0.8 J 0.8 J 2.2 J 9.5 J ND
ug/L 09/29/09 --25 --ND ND 35.1 4.94 J ND ND 5.71 J 1.57 J 7.54 J 12.9 J ND
ug/L 03/30/10 --25 --ND ND 30.3 3.60 J ND ND ND 3.19 J 3.90 J 11.5 J ND
ug/L 09/29/10 --25 --ND ND 23.3 J 4.85 J 2.47 J ND ND 1.70 J 59.9 9.73 J ND
ug/L 09/29/10 --25 ------------------ND --ND
ug/L 04/06/11 --25 --ND ND 28.0 4.24 J ND ND ND ----11.1 J ND
ug/L 09/28/11 --25 --ND ND 34.4 4.59 J ND ND ND ----10.3 J ND
ug/L 03/28/12 --25 --ND ND 25.1 2.41 J ND ND ND ----10.3 J ND
ug/L 09/26/12 --25 --ND ND 22.0 J 1.95 J ND ND ND ----9.75 J ND
ug/L 04/01/13 --25 --ND ND 24.8 J 2.09 J ND ND ND ----9.99 J ND
ug/L 09/25/13 --25 --ND ND 25.2 2.39 J ND ND ND ----9.72 J ND
ug/L 04/01/14 --25 --ND ND 23.1 J 2.21 J ND ND ND ----9.33 J ND
ug/L 09/29/14 1.40 25 --ND ND 26.3 1.96 J 2.81 J ND ND ----10.1 J ND
ug/L 03/31/15 1.40 25 --ND ND 25.5 1.50 J ND ND ND ----8.77 J ND
ug/L 10/26/15 1.40 25 --ND ND 21.9 J 2.85 J ND ND ND ----9.74 J ND
ug/L 03/30/16 1.40 25 --ND ND 22.1 J 3.44 J ND ND ND ----9.49 J ND
ug/L 09/27/16 1.40 25 --ND ND 19.3 J 3.59 J ND ND ND ----8.50 J ND
Zinc ug/L 10/31/01 --20 ND ----ND 21 ND ----------ND
NC 2L = 1000 ug/L ug/L 06/11/02 ----------------------------
EPA MCL = 5000 ug/L*ug/L 11/01/02 ----------------------------
ug/L 03/06/03 ----------------------------
ug/L 09/23/03 ----------------------------
ug/L 03/11/04 ----------------------------
ug/L 09/23/04 ----------------------------
ug/L 03/10/05 ----------------------------
ug/L 09/22/05 ----------------------------
ug/L 03/06/06 ----------------------------
ug/L 09/19/06 ----------------------------
ug/L 03/21/07 --10 --ND 3.1 B 5.9 J 4.5 B 49.8 ND --------1.1 J
ug/L 09/28/07 --10 --2.3 J ND 4.8 J 41.4 17.6 54.3 --------ND
ug/L 03/25/08 --10 --2.1 B 9.9 B 1.6 B 10.9 B 9.1 B ND 78.6 --23.5 58.6 2.8 J
ug/L 09/29/08 --10 --ND 4.3 J ND 9.3 J 9.7 J 5.6 J ND 12.6 15.7 ND ND
ug/L 03/30/09 --10 --ND 3.8 J 7.0 J 9.2 J ND ND ND 7.3 J 5.2 J ND ND
ug/L 09/29/09 --10 --5.13 B 6.49 B 10.1 B 23.5 18.8 B 4.26 B 16.4 B 20.9 B 20.3 B 13.4 B 4.60 J
ug/L 03/30/10 --10 --ND 11.1 6.52 J 6.87 J 4.92 J ND ND 23.7 16.5 13.5 ND
ug/L 09/29/10 --10 --ND 4.47 J 10.2 8.62 J 5.64 J ND ND 14.1 52.8 8.48 J ND
ug/L 04/06/11 --10 --ND 7.32 J 6.32 J 5.17 J 9.91 J ND ND ----ND ND
ug/L 09/28/11 --10 --ND ND 13.6 12.3 17.5 ND ND ----ND ND
ug/L 03/28/12 --10 --ND 6.10 J 13.7 ND 5.76 J ND ND ----ND ND
ug/L 09/26/12 --10 --ND 5.70 J 8.44 J ND 7.55 J 4.44 J ND ----ND ND
ug/L 04/01/13 --10 --ND 8.82 J 8.34 J ND 5.34 J ND ND ----ND ND
ug/L 09/25/13 --10 --ND ND 6.25 J ND 5.48 J ND ND ----ND ND
ug/L 04/01/14 --10 --ND 7.22 J 8.26 J ND ND ND ND ----ND ND
ug/L 09/29/14 3.80 10 --ND ND 8.34 J 4.13 J 24.6 ND ND ----8.84 J ND
ug/L 03/31/15 3.80 10 --ND ND 11.3 ND 7.04 J ND ND ----ND ND
ug/L 10/26/15 3.80 10 --ND ND 8.77 J 4.17 J 8.08 J 3.88 J ND ----ND ND
ug/L 03/30/16 3.80 10 --ND ND 5.39 J ND ND ND ND ----ND ND
ug/L 09/27/16 4.40 10 --ND ND 6.60 J 5.57 J 9.70 J ND ND ----ND ND
December 2016 Page 5 of 6 Project No. 0739603516
G:\PROJECTS\Waste Industries\Red Rock\Groundwater\GWMR\Sept 2016\Tables\Red Rock Tables September 2016.xlsx
MW-1 MW-10 MW-2T(1)MW-3 MW-4 MW-5 MW-6T(1)MW-11 MW-12 MW-13 MW-14
Blanks
Upgradient
Compliance WellsSWS
Reporting
Limit
Downgradient Compliance Wells
MDL
TABLE 4
Summary of Groundwater Monitoring Results
Detected Constituents
Red Rock Disposal, LLC C&D Landfill, Permit No. 92-28
Wake County, North Carolina
Detected Monitoring
Constituents/Parameters
Sample
Date
Reporting
Units
Iron ug/L 03/21/07 --300 --20 J 26 J ND 813 4820 ND --------ND
NC 2L = 300 ug/L ug/L 09/28/07 --300 --170 J 39 J ND 21800 436 ND ----------
EPA MCL = 300 ug/L*ug/L 03/25/08 --300 --242 J ND ND 3470 162 J ND 27900 --2990 13200 ND
ug/L 09/29/08 --300 --144 J 267 J ND 8780 5390 480 575 1050 5020 141 J ND
ug/L 03/30/09 --300 --141 J 107 J ND 2240 150 J 1030 574 367 1120 ND ND
ug/L 09/29/09 --300 --457 247 J 156 J 7100 1750 1510 2400 1420 4310 1230 23.4 J
ug/L 03/30/10 --300 --79.7 J 644 104 J 2250 200 J 959 170 J 1060 1430 745 ND
ug/L 09/29/10 --300 --23.0 J 196 J 220 J 2210 175 J 590 115 J 768 42100 80.1 J ND
ug/L 09/29/10 --300 ------------------97.7 J --ND
ug/L 04/06/11 --300 --27.9 J 113 J 211 J 2260 96.8 J 990 112 J ----82.8 J ND
ug/L 09/28/11 --300 --36.4 J 363 1620 2290 116 J 1080 79.2 J ----31.3 J ND
ug/L 03/28/12 --300 --34.7 J 94.1 J 292 J 742 117 J 1010 39.0 J ----50.0 J ND
ug/L 09/26/12 --300 --30.0 J 107 J 1800 599 143 J 1110 70.6 J ----25.5 J ND
ug/L 04/01/13 --300 --64.5 J 58.0 J 376 677 54.6 J 1020 41.7 J ----51.4 J ND
ug/L 09/25/13 --300 --95.5 J 566 605 665 65.3 J 1020 72.2 J ----30.1 J ND
ug/L 04/01/14 --300 --ND 87.8 J 264 J 735 65.0 J 980 58.4 J ----44.6 J ND
ug/L 09/29/14 22.0 300 --ND 636 690 761 2150 1040 92.0 J ----1950 ND
ug/L 03/31/15 22.0 300 --126 J 519 360 770 233 J 1200 ND ----69.3 J ND
ug/L 10/26/15 22.0 300 --24.2 J 283 J 150 J 981 115 J 1090 59.1 J ----276 J ND
ug/L 03/30/16 22.0 300 --71.3 J 242 J 372 1040 154 J 1100 157 J ----179 J ND
ug/L 09/27/16 22.0 300 --ND 251 J 153 J 1900 110 J 1100 135 J ----121 J ND
Manganese ug/L 03/21/07 --50 --166 141 16.8 J 743 3540 1370 --------ND
NC 2L = 50 ug/L ug/L 09/28/07 --50 --251 36.0 J 33.7 J 498 2040 1580 ----------
EPA MCL = 50 ug/L*ug/L 03/25/08 --50 --508 11.6 J ND 337 122 80.5 877 --89.2 1620 ND
ug/L 09/29/08 --50 --1050 146 ND 1390 1920 1170 125 1510 139 58.1 ND
ug/L 03/30/09 --50 --215 115 ND 239 116 1640 108 390 81.7 3.6 J ND
ug/L 09/29/09 --50 --1130 185 6.27 J 2270 1350 1860 180 1070 145 121 ND
ug/L 03/30/10 --50 --144 197 4.01 J 39.4 J 237 1430 74.2 553 92.4 229 ND
ug/L 09/29/10 --50 --913 94.2 22.3 J 108 429 1090 72.9 480 468 29.5 J 1.12 J
ug/L 09/29/10 --50 ------------------68.9 ND
ug/L 04/06/11 --50 --377 104 20.2 J 26.9 J 1190 1590 76.5 ----17.8 J ND
ug/L 09/28/11 --50 --1550 182 34.1 J 130 316 1710 72.4 ----13.3 J ND
ug/L 03/28/12 --50 --470 88.4 15.3 J 35.2 J 205 1650 37.2 J ----14.7 J ND
ug/L 09/26/12 --50 --1430 81.1 55.8 44.0 J 103 1760 76.3 ----7.07 J ND
ug/L 04/01/13 --50 --255 110 32.2 J 11.9 J 57.9 1690 33.3 J ----9.57 J ND
ug/L 09/25/13 --50 --1030 160 41.1 J 23.6 J 76.6 1670 99.1 ----7.31 J ND
ug/L 04/01/14 --50 --118 121 14.1 J 9.51 J 31.8 J 1730 30.2 J ----10.2 J ND
ug/L 09/29/14 1.10 50 --1530 180 18.1 J 23.0 J 2520 1770 98.4 ----42.2 J ND
ug/L 03/31/15 1.10 50 --130 210 14.7 J 11.0 J 227 2050 9.72 J ----3.97 J ND
ug/L 10/26/15 1.10 50 --1130 57.6 14.1 J 58.8 280 1780 57.5 ----77.9 ND
ug/L 03/30/16 1.10 50 --149 53.8 22.8 J 18.3 J 85.2 1840 63.0 ----14.5 J ND
ug/L 09/27/16 1.10 50 --1330 127 13.8 J 29.1 J 848 1780 50.4 ----18.0 J 1.90 J
Acetone ug/L 03/21/07 --100 --ND ND ND ND ND ND --------ND
NC 2L = 6000 ug/L ug/L 09/28/07 --100 --ND 2.8 B ND ND ND ND --------5.2 J
No EPA MCL ug/L 03/25/08 --100 --ND ND ND 3.0 J 3.2 J ND ND --ND ND ND
ug/L 09/29/08 --100 --2.7 B 2.8 B ND ND ND 4.4 B ND 4.7 B 4.9 B ND 3.5 J
ug/L 03/30/09 --100 --ND ND ND ND ND ND 4.2 J ND ND ND ND
ug/L 09/29/09 --100 --ND ND ND ND ND ND ND ND ND ND ND
ug/L 03/30/10 --100 --ND ND ND ND ND ND ND ND ND ND ND
ug/L 09/29/10 --100 --ND ND ND ND ND ND ND ND ND ND ND
ug/L 04/06/11 --100 --ND ND ND ND ND ND ND ----ND ND
ug/L 09/28/11 --100 --ND ND ND ND ND ND ND ----ND ND
ug/L 03/28/12 --100 --ND ND ND ND ND ND ND ----ND ND
ug/L 09/26/12 --100 --ND ND ND ND ND ND ND ----ND ND
ug/L 04/01/13 --100 --ND ND ND ND ND ND ND ----ND ND
ug/L 09/25/13 --100 --ND ND ND ND ND ND ND ----ND ND
ug/L 04/01/14 --100 --ND ND ND ND ND ND ND ----ND ND
ug/L 09/29/14 1.2 100 --ND ND ND ND ND ND ND ----ND ND
ug/L 03/31/15 1.2 100 --ND ND ND ND ND ND ND ----ND ND
ug/L 10/26/15 1.2 100 --ND ND ND ND ND ND ND ----ND ND
ug/L 03/30/16 1.2 100 --ND ND ND ND ND ND ND ----ND ND
ug/L 09/27/16 10 100 --ND ND ND ND 12 J ND ND ----ND ND
Toluene ug/L 03/21/07 --1 --ND ND ND ND ND ND --------ND
NC2L = 600 ug/L ug/L 09/27/07 --1 --ND ND ND ND ND ND --------ND
EPA MCL = 1000 ug/L ug/L 03/25/08 --1 --ND ND ND ND ND ND --------ND
ug/L 09/29/08 --1 --ND ND ND ND ND ND ND ND ND ND ND
ug/L 03/30/09 --1 --ND ND ND ND ND ND ND ND ND ND ND
ug/L 09/29/09 --1 --0.63 J ND 0.51 J ND ND 0.81 J 0.94 J 0.56 J ND 0.45 J ND
ug/L 03/30/10 --1 --ND ND ND ND ND ND ND ND ND ND ND
ug/L 09/29/10 --1 --ND ND ND ND ND ND ND ND ND ND ND
ug/L 04/06/11 --1 --ND ND ND ND ND ND ND ----ND ND
ug/L 09/28/11 --1 --ND ND ND ND ND ND ND ----ND ND
ug/L 03/28/12 --1 --ND ND ND ND ND ND ND ----ND ND
ug/L 09/26/12 --1 --ND ND ND ND ND ND ND ----ND ND
ug/L 04/01/13 --1 --ND ND ND ND ND ND ND ----ND ND
ug/L 09/25/13 --1 --ND ND ND ND ND ND ND ----ND ND
ug/L 04/01/14 --1 --ND ND ND ND ND ND ND ----ND ND
ug/L 09/29/14 0.14 1 --ND ND 0.45 J ND ND ND ND ----ND ND
ug/L 03/31/15 0.14 1 --ND ND ND ND ND ND ND ----ND ND
ug/L 10/26/15 0.14 1 --ND ND ND ND ND ND ND ----ND ND
ug/L 03/30/16 0.14 1 --ND ND ND ND ND ND ND ----ND ND
ug/L 09/27/16 0.14 1 --ND ND ND ND ND ND ND ----ND ND
Tetrahydrofuran ug/L 04/06/11 ------ND ND ND ND ND ND ND ----ND ND
No NC 2L ug/L 09/28/11 ------ND ND ND ND ND ND ND ----ND ND
No EPA MCL ug/L 03/28/12 ------ND ND ND ND ND ND ND ----ND ND
ug/L 09/26/12 ------ND ND ND ND ND ND ND ----ND ND
ug/L 04/01/13 ------ND ND ND ND ND ND ND ----ND ND
ug/L 09/25/13 ------ND ND ND ND 2.4 ND ND ----ND ND
ug/L 04/01/14 ------ND ND ND ND ND ND ND ----ND ND
ug/L 09/29/14 0.80 ----ND ND ND ND 10 ND ND ----ND 1.7
ug/L 03/31/15 0.80 ----ND ND ND ND ND ND ND ----ND ND
ug/L 10/26/15 0.80 ----ND ND ND ND ND ND ND ----ND ND
ug/L 03/30/16 0.80 ----ND ND ND ND 6.6 ND ND ----ND ND
ug/L 09/27/16 0.80 ----ND ND ND ND 3.1 ND ND ----ND ND
Chloride mg/L 03/21/07 ------1000 1500 2100 15 290 2000 --------ND
NC2L = 250 mg/L mg/L 09/28/07 ------170 430 1600 14 210 1700 --------0.53 J
EPA MCL = 250 mg/L*mg/L 03/25/08 ------230 490 1500 3.5 J 330 1600 7.9 --2.2 J 18 ND
mg/L 09/29/08 ------320 530 1700 4.0 J 170 1700 11 1500 10 20 ND
mg/L 03/30/09 ------ND 460 1600 6.5 400 1800 9.4 500 5.2 16 ND
mg/L 09/29/09 ------330 490 1500 7.1 390 1900 10 1300 9.5 21 ND
mg/L 03/30/10 ------480 510 1600 6.4 960 1900 11 880 13 21 ND
mg/L 09/29/10 ------310 450 1600 7.3 360 1900 11 840 25 20 ND
mg/L 04/06/11 ------340 470 1500 5.4 B 660 1900 11 ----22 1.9
mg/L 09/28/11 ------460 490 1500 5.5 B 570 1900 10 ----24 1.6 J
mg/L 03/28/12 ------330 520 1600 5.8 B 770 2100 11 ----28 1.2
mg/L 09/26/12 ------480 500 1500 6.4 B 900 2100 11 ----30 1.5
mg/L 04/01/13 ------330 480 1600 6.9 B 820 1900 11 ----36 1.6
mg/L 09/25/13 ------420 510 1700 6.2 1400 2100 11 ----37 ND
mg/L 04/01/14 ------440 500 1600 5.0 1500 2100 11 ----35 ND
mg/L 09/29/14 110 ----460 490 1700 5.6 1200 2100 11 ----30 ND
mg/L 03/31/15 87 ----430 440 1600 5.1 940 2100 11 ----37 ND
mg/L 10/26/15 87 ----360 480 1700 5.5 730 2300 9.9 ----30 ND
mg/L 03/30/16 2.2 ----360 510 1700 4.2 J 1600 2300 11 ----35 ND
mg/L 09/27/16 2.2 ----410 520 1800 5.7 1100 2400 11 ----30 ND
December 2016 Page 6 of 6 Project No. 0739603516
G:\PROJECTS\Waste Industries\Red Rock\Groundwater\GWMR\Sept 2016\Tables\Red Rock Tables September 2016.xlsx
MW-1 MW-10 MW-2T(1)MW-3 MW-4 MW-5 MW-6T(1)MW-11 MW-12 MW-13 MW-14
Blanks
Upgradient
Compliance WellsSWS
Reporting
Limit
Downgradient Compliance Wells
MDL
TABLE 4
Summary of Groundwater Monitoring Results
Detected Constituents
Red Rock Disposal, LLC C&D Landfill, Permit No. 92-28
Wake County, North Carolina
Detected Monitoring
Constituents/Parameters
Sample
Date
Reporting
Units
Total Dissolved Solids mg/L 03/21/07 ------860 1100 3400 64 590 3100 --------ND
NC2L = 1000 mg/L mg/L 09/28/07 ------490 1200 3100 1400 480 3200 ----------
No EPA MCL mg/L 03/25/08 ------620 1200 3400 120 830 3400 510 --94 340 ND
mg/L 09/29/08 ------850 1300 3400 100 450 3500 380 2900 180 330 ND
mg/L 03/30/09 ------910 1200 3300 90 930 3700 290 1000 54 260 ND
mg/L 09/29/09 ------930 1300 3300 150 930 3900 360 2600 200 340 ND
mg/L 03/30/10 ------1200 1300 3500 160 2100 4000 350 1800 150 320 ND
mg/L 09/29/10 ------850 1300 3500 140 920 4000 340 1800 930 330 ND
mg/L 04/06/11 ------870 1200 3300 120 1600 4100 320 ----310 ND
mg/L 09/28/11 ------1200 1200 3300 120 1300 4000 320 ----300 ND
mg/L 03/28/12 ------890 1200 3200 82 1600 3900 340 ----360 ND
mg/L 09/26/12 ------1100 1200 3100 28 1900 4300 350 ----340 ND
mg/L 04/01/13 ------1100 1200 3300 66 1800 4200 320 ----360 ND
mg/L 09/25/13 ------1000 1200 3300 74 2800 4700 320 ----350 ND
mg/L 04/01/14 ------1200 1200 3600 74 3000 4300 340 ----320 ND
mg/L 09/29/14 10 ----1100 1200 3400 86 2800 4300 340 ----340 ND
mg/L 03/31/15 10 ----1100 1200 3600 120 2100 4500 350 ----360 ND
mg/L 10/26/15 10 ----890 1200 3600 88 1600 4900 320 ----320 ND
mg/L 03/30/16 50 ----960 1200 3300 110 3300 4300 340 ----350 ND
mg/L 09/27/16 50 ----950 1200 3600 100 2400 4900 320 ----310 ND
Sulfate mg/L 03/21/07 ------15 38 7.3 B 10 45 9.7 --------1.7 J
NC2L = 250 mg/L mg/L 09/28/07 --250 --13 J 40 J 32 J 8.0 J 58 J 25 J ----------
No EPA MCL mg/L 03/25/08 --250 --12 J 35 J 7.2 J 8.7 J 86 J 11 J ND --15 J 12 J ND
mg/L 09/29/08 --250 --11 J 53 J 6.0 J 6.3 J 52 J 10 J 2.4 J 9.2 J 16 J 12 J ND
mg/L 03/30/09 --250 --14 J 43 J 5.9 J 8.1 J 58 J 10 J 2.6 J 16 J 15 J 12 J ND
mg/L 09/29/09 --250 --11 J 46 J 5.5 J 8.2 J 59 J 11 J 2.5 J 11 J 16 J 12 J ND
mg/L 03/30/10 --250 --16 J 45 J 5.0 J 7.4 J 86 J 13 J 2.7 J 20 J 18 J 12 J ND
mg/L 09/29/10 --250 --11 J 48 J 4.7 J 6.2 J 36 J 15 J 2.5 J 18 J 12 J 12 J ND
mg/L 04/06/11 --250 --9.9 J 51 J 4.7 J 7.0 J 140 J 16 J 3.4 J ----12 J ND
mg/L 09/28/11 --250 --9.3 J 56 J 4.3 J 5.0 J 84 J 16 J 2.9 J ----13 J ND
mg/L 03/28/12 --250 --12 J 58 J 4.1 J 6.9 J 90 J 16 J 3.8 J ----13 J ND
mg/L 09/26/12 --250 --9.1 J 5.3 J 4.1 J 6.2 J 93 J 11 J 4.6 J ----12 J ND
mg/L 04/01/13 --250 --13 J 51 J 4.2 J 8.4 J 110 J 18 J 5.1 J ----12 J ND
mg/L 09/25/13 --250 --11 J 56 J 3.9 B 7.9 J 110 J 12 J 7.7 J ----12 J 1.5 J
mg/L 04/01/14 --250 --14 J 50 J 4.2 J 9.8 J 110 J 11 J 13 J ----11 J ND
mg/L 09/29/14 2.9 250 --9.5 J 53 J 4.9 J 9.4 J 95 J 12 J 13 J ----12 J ND
mg/L 03/31/15 2.9 250 --16 J 56 J 5.2 J 11 J 88 J 15 J 12 J ----12 J ND
mg/L 10/26/15 2.9 250 --12 J 44 J 4.6 J 9.3 J 87 J 17 J 13 J ----11 J ND
mg/L 03/30/16 2.9 250 --16 J 54 J 5.2 J 12 J 110 J 18 J 13 J ----12 J ND
mg/L 09/27/16 2.9 250 --10 J 57 J 5.5 J 11 J 88 J 17 J 18 J ----13 J ND
Total Alkalinity mg/L 03/21/07 ------120 320 270 31 22 310 --------ND
No NC 2L mg/L 09/28/07 ------180 340 350 ND 15 320 ----------
No EPA MCL mg/L 03/25/08 ------190 240 250 24 86 210 240 --10 J 130 ND
mg/L 09/29/08 ------140 240 230 40 25 220 240 78 17 130 ND
mg/L 03/30/09 ------220 230 220 41 120 220 200 40 ND 110 ND
mg/L 09/29/09 ------160 210 220 38 57 230 200 68 24 110 ND
mg/L 03/30/10 ------290 210 220 32 140 220 210 36 13 J 110 ND
mg/L 09/29/10 ------250 310 330 37 34 330 300 45 ND 220 ND
mg/L 04/06/11 ------210 290 330 29 49 340 290 ----220 ND
mg/L 09/28/11 ------270 320 310 32 73 320 280 ----220 ND
mg/L 03/28/12 ------310 300 310 25 84 350 290 ----240 ND
mg/L 09/26/12 ------270 290 310 38 140 350 300 ----230 ND
mg/L 04/01/13 ------340 300 300 21 89 320 290 ----220 ND
mg/L 09/25/13 ------290 310 310 24 240 340 280 ----230 ND
mg/L 04/01/14 ------350 260 330 36 230 310 210 ----210 ND
mg/L 09/29/14 70 ----260 330 370 34 270 370 300 ----240 ND
mg/L 03/31/15 70 ----400 320 350 33 170 400 310 ----250 ND
mg/L 10/26/15 70 ----260 300 330 38 100 380 290 ----220 ND
mg/L 03/30/16 70 ----350 320 380 40 430 430 310 ----260 ND
mg/L 09/27/16 70 ----200 300 350 29 310 400 270 ----230 ND
Notes:mg/L =milligrams per liter
ug/L =micrograms per liter
ND =Not detected at the stated reporting limit
J =Estimated value
-- =no data
# =EPA Action Level
* = EPA Secondary MCL
Blanks =field, trip, and method blanks
Bolded =Concentrations above the current NC 2L Groundwater Standards or Solid Waste Section Groundwater Protection Standards (SWS GPS) have been bolded.
Shaded = Concentrations above the current EPA Maximum Contaminant Level (MCL) have been shaded.
SWS Reporting Limit =NCPQL or lab-specific reporting limit prior to 2007 and NCSWSL starting on 01/18/07
3) MW-10 is the facility's background well.
7) Re-analyses results are reported in parentheses.
2) MW-2T, MW-3, MW-4, MW-5, MW-6T and MW-10 have comprised the current monitoring well network since the Sept. 2004 event.
4) MW-1 was removed from the site for cell construction and was decomissioned following the March 2004 sampling event according to G.N. Richardson & Associates, Inc. WQMP Oct. 2003
5) Non-compliance (pre-waste) data from upgradient wells MW-11, MW-12 and MW-14 were collected in March 2008 to supplement the background data pool for statistical analysis.
6) Monitoring wells MW-12 and MW-13 were not sampled beginning with the April 2011 event per NCDENR approval to decommission MW-13 and collect water levels only for MW-12.
8) The following dilutions were noted for the April 2016 event: Choride by 5X (MW-10), by 20X (MW-3), and by 25X (MW-6T); alkalinity by 2X (MW-14), by 3X (MW-2T, MW-3, and MW-11), by 4X (MW-10), and by 5X (MW-6T); and sulfate by 2X (MW-5)
1) MW-2T & MW-6T are replacement wells for MW-2 and MW-6 and have been included as part of the monitoring well network following the April 2001 sampling event.
December 2016 Page 1 of 2 Project No. 0739603516
G:\PROJECTS\Waste Industries\Red Rock\Groundwater\GWMR\Sept 2016\Tables\Red Rock Tables September 2016.xlsx
MW-1 MW-10 MW-2T MW-3 MW-4 MW-5 MW-6T MW-11 MW-14
pH (field)S.U.10/31/01 ------------------
S.U.06/11/02 7.00 7.00 6.30 6.80 5.50 5.80 7.10 ----
S.U.11/01/02 7.30 6.90 7.10 7.10 5.20 5.00 7.40 ----
S.U.03/06/03 7.50 5.90 6.90 7.00 5.40 5.10 7.30 ----
S.U.09/23/03 6.70 6.10 7.40 6.90 5.20 4.50 7.30 ----
S.U.03/11/04 6.60 6.70 7.00 6.70 5.30 4.70 7.40 ----
S.U.09/23/04 --6.60 7.20 6.80 5.80 5.30 7.20 ----
S.U.03/10/05 --6.40 7.30 6.90 6.00 5.60 7.20 ----
S.U.09/22/05 --6.60 7.60 7.00 5.90 6.70 7.20 ----
S.U.03/06/06 --6.60 7.60 6.80 5.50 5.30 7.00 ----
S.U.09/19/06 --6.70 7.40 7.00 5.90 5.10 7.10 ----
S.U.03/21/07 --5.63 7.08 7.24 6.95 7.83 6.86 ----
S.U.09/28/07 --6.18 7.15 7.14 6.43 7.50 6.92 ----
S.U.03/25/08 --6.75 7.62 7.19 5.70 6.43 7.51 8.25 9.08
S.U.09/29/08 --6.63 7.30 6.89 5.55 5.50 7.11 7.26 6.77
S.U.03/30/09 --6.57 7.38 7.03 5.74 6.51 6.93 7.25 7.02
S.U.09/29/09 --6.77 7.16 6.65 5.15 5.55 6.98 6.92 6.75
S.U.03/30/10 --6.40 7.17 6.73 5.53 6.26 6.83 7.23 6.61
S.U.09/29/10 --6.70 7.16 7.01 10.37 7.03 6.86 7.08 6.96
S.U.04/06/11 --6.66 6.84 6.88 5.42 5.74 6.60 7.35 6.83
S.U.09/28/11 --6.65 7.19 6.98 5.38 6.45 7.02 7.35 7.07
S.U.03/28/12 --6.55 7.02 7.00 5.15 6.09 6.77 7.45 6.94
(Verification Event)S.U.05/23/12 ----------6.28 ------
S.U.09/26/12 --6.75 7.52 7.21 5.19 6.50 7.01 7.66 6.90
S.U.04/01/13 --6.65 6.91 7.10 5.70 6.53 6.83 7.50 7.07
S.U.09/25/13 --6.75 7.23 6.95 5.61 6.51 6.85 7.56 7.05
S.U.04/01/14 --6.37 6.93 6.75 5.69 6.37 6.59 7.39 7.00
S.U.09/29/14 --6.16 7.09 6.73 5.80 6.43 6.93 7.04 6.57
S.U.03/31/15 --6.64 7.32 7.04 6.01 6.37 6.86 7.77 7.02
S.U.10/26/15 --6.69 6.93 6.89 5.30 6.02 6.72 7.42 6.84
S.U.03/30/16 --6.56 6.89 6.86 5.81 6.51 6.97 7.57 7.10
(Verification Event)S.U.05/18/16 ------6.77 ----------
S.U.09/27/16 --6.63 7.18 6.78 5.28 6.38 6.71 7.40 6.78
Specific Conductance uS/cm 10/31/01 ------------------
(lab prior to 9/19/06 event)uS/cm 06/11/02 2300 620 2200 4300 270 810 3700 ----
uS/cm 11/01/02 2000 796 1820 4000 114 254 4000 ----
uS/cm 03/06/03 2240 253 1804 5170 141 458 3770 ----
uS/cm 09/23/03 4059 622 1692 3088 141 247 3015 ----
uS/cm 03/11/04 5078 1464 2250 5310 208 944 4050 ----
uS/cm 09/23/04 --995 2410 5220 124 525 4050 ----
uS/cm 03/10/05 --1382 1876 4073 184 938 3091 ----
uS/cm 09/22/05 --997 1968 4040 190 2860 3850 ----
uS/cm 03/06/06 --1170 1963 4610 140 894 4150 ----
uS/cm 09/19/06 --1378 2170 4850 158 698 4700 ----
uS/cm 03/21/07 --1870 2470 6480 101 1320 6320 ----
uS/cm 09/28/07 --1080 2260 5760 175 1060 6080 ----
uS/cm 03/25/08 --1191 2313 5786 113 1703 5892 652 552
uS/cm 09/29/08 --1700 2380 5450 129 920 5590 556 462
uS/cm 03/30/09 --1950 2301 5369 146 1826 6126 557 473
uS/cm 09/29/09 --1760 1989 4445 132 1451 6767 490 432
uS/cm 03/30/10 --2284 2407 5599 122 3649 6633 580 531
uS/cm 09/29/10 --1666 2227 5229 142 1761 6238 607 564
uS/cm 04/06/11 --1696 2392 5602 115 2763 6716 580 533
uS/cm 09/28/11 --2020 2401 5404 101 4829 6644 564 538
uS/cm 03/28/12 --1455 2283 4757 91 2378 6275 525 486
(Verification Event)uS/cm 05/23/12 ----------4844 ------
uS/cm 09/26/12 --1793 2148 4802 109 5341 6897 512 498
uS/cm 04/01/13 --1669 2031 4624 87 2463 5981 498 492
uS/cm 09/25/13 --2030 2460 5630 114 5590 7400 590 600
uS/cm 04/01/14 --2273 2535 6014 142 5334 7594 668 86
uS/cm 09/29/14 --2102 2484 5776 190 5904 7507 648 623
uS/cm 03/31/15 --1931 2311 5462 117 2560 6890 553 552
uS/cm 10/26/15 --1792 2139 5452 75.4 2496 7049 560 541
uS/cm 03/30/16 --1835 2322 5888 128 5940 7702 615 603
(Verification Event)uS/cm 05/18/16 ------6490 ----------
uS/cm 09/27/16 --1750 2450 5800 138 6260 7490 610 570
Temperature Celsius 10/31/01 ------------------
(lab prior to 9/19/06 event)Celsius 06/11/02 17.0 16.0 16.0 15.0 16.0 15.0 19.0 ----
Celsius 11/01/02 16.0 17.0 17.0 17.0 15.0 15.0 17.0 ----
Celsius 03/06/03 16.0 12.0 16.0 13.0 12.0 11.0 16.0 ----
Celsius 09/23/03 22.0 19.0 17.0 19.0 21.0 20.0 20.0 ----
Celsius 03/11/04 12.0 13.0 16.0 12.0 11.0 10.0 14.0 ----
Celsius 09/23/04 --19.0 18.0 19.0 20.0 20.0 21.0 ----
Celsius 03/10/05 --12.0 16.0 12.0 9.0 10.0 13.0 ----
Celsius 09/22/05 --20.0 20.0 19.0 20.0 20.0 22.0 ----
Celsius 03/06/06 --14.0 17.0 14.0 13.0 13.0 15.0 ----
Celsius 09/19/06 --19.0 18.0 19.0 19.0 21.0 20.0 ----
Celsius 03/21/07 --12.8 15.9 13.2 11.9 11.2 12.7 ----
Celsius 09/28/07 --21.98 21.32 20.78 20.61 22.75 26.35 ----
Celsius 03/25/08 --14.64 17.46 13.42 12.30 12.14 16.00 16.06 14.76
Celsius 09/29/08 --18.30 19.84 17.88 19.18 20.38 21.48 20.60 19.91
Celsius 03/30/09 --15.41 16.99 14.13 10.85 10.89 16.73 15.64 15.57
Celsius 09/29/09 --16.92 16.69 15.82 18.90 19.31 22.71 20.81 18.08
Celsius 03/30/10 --16.46 15.89 14.05 14.70 13.32 18.05 14.24 16.38
Celsius 09/29/10 --17.37 18.19 18.66 20.65 20.00 18.70 17.45 17.92
Celsius 04/06/11 --14.67 17.24 16.85 13.54 12.63 14.99 17.21 15.40
Celsius 09/28/11 --18.17 20.98 18.99 19.91 19.73 19.71 18.97 18.77
Celsius 03/28/12 --14.85 18.91 15.44 15.12 14.27 17.95 17.62 16.05
(Verification Event)Celsius 05/23/12 ----------16.50 ------
Celsius 09/26/12 --17.96 19.55 18.34 20.06 19.54 22.62 19.18 18.62
Celsius 04/01/13 --14.87 18.10 16.11 12.86 12.75 16.87 17.03 15.62
Celsius 09/25/13 --17.1 18.6 17.6 18.7 18.5 18.9 17.6 17.3
Celsius 04/01/14 --14.1 18.0 15.7 12.9 12.2 16.8 17.9 16.4
Celsius 09/29/14 --17.5 18.6 17.3 18.3 18.3 18.7 17.9 17.3
Celsius 03/31/15 --12.8 17.0 13.9 12.7 11.38 15.9 16.2 14.1
Celsius 10/26/15 --16.5 17.2 16.5 17.0 17.0 17.4 16.8 16.5
Celsius 03/30/16 --13.9 17.2 15.1 13.3 12.6 17.2 17.4 15.4
(Verification Event)Celsius 05/18/16 ------14.9 ----------
Celsius 09/27/16 --19.0 20.1 19.6 20.3 19.9 21.2 20.0 19.1
Detected Monitoring
Constituents/Parameters
Reporting
Units
Sample
Date
TABLE 5
Summary of Field Parameters from Monitoring Wells
Red Rock Disposal, LLC C&D Landfill, Permit No. 92-28
Wake County, North Carolina
Upgradient Downgradient Compliance Wells
December 2016 Page 2 of 2 Project No. 0739603516
G:\PROJECTS\Waste Industries\Red Rock\Groundwater\GWMR\Sept 2016\Tables\Red Rock Tables September 2016.xlsx
MW-1 MW-10 MW-2T MW-3 MW-4 MW-5 MW-6T MW-11 MW-14
Detected Monitoring
Constituents/Parameters
Reporting
Units
Sample
Date
TABLE 5
Summary of Field Parameters from Monitoring Wells
Red Rock Disposal, LLC C&D Landfill, Permit No. 92-28
Wake County, North Carolina
Upgradient Downgradient Compliance Wells
Turbidity (field)NTU 03/21/07 --124 135 106 154 342 97 ----
NTU 09/28/07 --0 0 0 >1000 0 189 ----
NTU 03/25/08 --10.1 9.02 1.31 49.8 5.55 1.46 >1000 >1000
NTU 09/29/08 --6.21 62.2 5.09 50.5 12.6 3.6 26.7 6.86
NTU 03/30/09 --5.74 11.4 2.92 35.5 8.32 1.18 28.8 1.20
NTU 09/29/09 --36.5 14.4 32.7 98.1 20.1 57.2 139 92.0
NTU 03/30/10 --2.94 26.9 2.30 46.3 2.53 3.92 7.75 33.6
NTU 09/29/10 --1.84 4.50 0 58.8 3.58 3.91 8.65 2.20
NTU 04/06/11 --0.49 1.78 4.24 41.5 3.08 0.98 1.76 1.61
NTU 09/28/11 --3.37 7.98 44.5 61.5 3.34 10.7 8.95 6.99
NTU 03/28/12 --7.99 4.66 4.63 15.1 0.88 1.71 1.26 1.75
NTU 05/23/12 ----------10.2 ------
NTU 09/26/12 --1.25 1.92 20.8 16.0 6.18 2.03 3.04 1.63
NTU 04/01/13 --2.70 1.43 8.87 15.2 1.09 1.32 1.65 2.03
NTU 09/25/13 --5.46 4.61 10.3 18.1 3.33 8.79 5.65 3.81
NTU 04/01/14 --1.79 2.04 5.19 17.5 1.42 0.98 2.24 1.99
NTU 09/29/14 --0.46 2.27 7.31 12.2 24.9 1.70 1.14 14.4
NTU 03/31/15 --2.98 1.34 1.66 8.74 3.51 0.60 0.62 0.63
NTU 10/26/15 --0.56 0.85 1.09 15.6 1.16 2.62 0.87 5.26
NTU 03/30/16 --1.38 1.86 5.67 18.3 0.95 2.44 1.87 3.05
(Verification Event)NTU 05/18/16 ------1.93 ----------
NTU 09/27/16 --0.83 1.03 1.59 22.9 0.78 2.17 3.47 2.14
ORP (field)mV 03/21/07 ------------------
mV 09/28/07 ------------------
mV 03/25/08 --73.8 72 145.2 164.4 152.4 97.2 ----
mV 09/29/08 --85 -178 84 10 50 -5 -240 78
mV 03/30/09 --124.9 -27.0 132.9 182.1 140.3 -30.1 -77.7 94.4
mV 09/29/09 --17.6 -14.2 62.0 44.1 28.3 -81.9 -92.7 53.1
mV 03/30/10 --149.5 -69.5 138.6 119.5 86.2 -84.2 -89.3 64.2
mV 09/29/10 --83 -33.8 -323.1 -335.1 -288.3 -38.8 -48.4 49.5
mV 04/06/11 --82.6 -4.0 81.0 170.3 147.3 0.5 -23.7 87.6
mV 09/28/11 --31.4 -63.9 28.6 139.3 51.7 -79.2 -127.9 15.6
mV 03/28/12 --111.7 -72.7 57.1 97.7 73.2 -27.7 -156.6 -36.5
(Verification Event)mV 05/23/12 ----------31.1 ------
mV 09/26/12 --119.9 -95.5 -87.3 -40.1 -55.2 -100.0 -160.7 -29.7
mV 04/01/13 --39.2 -37.4 7.5 59.4 8.0 -48.3 -85.3 5.1
mV 09/25/13 --137.2 -89.3 102.4 184.2 164.0 -18.1 -89.1 74.5
mV 04/01/14 --152.6 -140.2 81.3 115.8 84.2 -55.7 -118.8 82.7
mV 09/29/14 --114.5 -114.0 61.1 176.4 143.6 -50.4 -78.9 88.3
mV 03/31/15 --135.8 -16.6 89.9 101.2 103.9 39.1 93.1 95.5
mV 10/26/15 --86.4 -32.5 37.0 188.1 87.0 -34.2 -90.7 23.5
mV 03/30/16 --75.8 -47.5 85.5 129.1 -69.8 -46.8 -104.6 91.4
(Verification Event)mV 05/18/16 ------45.2 ----------
mV 09/27/16 --135.3 -72.7 122.1 209.1 79.5 -20.2 -31.5 170.9
Dissolved Oxygen (field)mg/L 03/21/07 ------------------
mg/L 09/28/07 ------------------
mg/L 03/25/08 --0.79 7.24 8.32 1.99 3.09 4.62 ----
mg/L 09/29/08 --0.89 0.69 6.03 3.12 1.10 1.02 0.62 4.45
mg/L 03/30/09 --0.71 1.22 4.89 2.79 2.60 0.59 0.56 4.09
mg/L 09/29/09 --1.87 1.70 2.18 1.53 1.60 2.57 1.35 4.01
mg/L 03/30/10 --1.39 0.84 4.00 2.09 2.72 2.07 0.99 4.03
mg/L 09/29/10 --0.60 0.39 1.90 0.75 3.03 1.13 0.22 4.18
mg/L 04/06/11 --1.62 0.75 5.35 2.79 3.62 1.77 0.47 4.37
mg/L 09/28/11 --2.08 0.67 1.52 0.86 2.13 4.38 1.12 3.09
mg/L 03/28/12 --1.00 0.32 3.71 0.79 2.61 1.30 0.21 3.85
(Verification Event)mg/L 05/23/12 ----------1.56 ------
mg/L 09/26/12 --0.57 0.21 0.36 0.76 1.04 2.13 0.21 2.64
mg/L 04/01/13 --1.01 0.48 4.73 3.15 4.73 2.27 1.50 3.66
mg/L 09/25/13 --0.68 0.28 1.57 0.71 0.86 0.83 0.26 2.82
mg/L 04/01/14 --0.78 0.32 3.04 3.74 4.11 1.24 1.55 7.86
mg/L 09/29/14 --1.57 0.67 1.76 1.76 1.11 1.46 0.68 4.66
mg/L 03/31/15 --2.01 0.96 3.62 4.45 3.50 2.30 2.72 3.55
mg/L 10/26/15 --0.45 2.15 3.83 3.85 2.29 0.91 0.25 3.75
mg/L 03/30/16 --1.64 0.35 4.25 2.18 0.30 3.07 0.94 3.95
(Verification Event)mg/L 05/18/16 ------2.90 ----------
mg/L 09/27/16 --0.69 0.49 1.82 0.90 0.40 2.17 0.47 3.53
Notes:S.U. =Standard Units
NTU =Nephelometric Turbidity Units
uS/cm =microsiemens per centimeter
mg/L =milligrams per liter
mV =Millivolts
-- =no data
1) MW-2T, MW-3, MW-4, MW-5, MW-6T and MW-10 have comprised the current monitoring well network since the Sept. 2004 event.
2) MW-10 is the facility's background well.
3) MW-1 was removed from the site for cell construction and was decomissioned following the March 2004 sampling event
according to G.N. Richardson & Associates, Inc. WQMP Oct. 2003.
6) The pH value for the sample from MW-4 for the September 2010 event is considered suspect based on historical data.
4) Non-compliance (pre-waste) data from upgradient wells MW-11, MW-12 and MW-14 were collected in March 2008 to supplement the background data pool
for statistical analysis.
5) Monitoring wells MW-12 and MW-13 were not sampled beginning with the April 2011 event per NCDENR approval to decommission MW-13 and collect
water levels only for MW-12.
December 2016 Page 1 of 8 Project No. 0739603516
G:\PROJECTS\Waste Industries\Red Rock\Groundwater\GWMR\Sept 2016\Tables\Red Rock Tables September 2016.xlsx
SW-2 SW-3
Antimony ug/L 03/21/07 --6 ND ND ND
No SW Standard ug/L 09/28/07 ----Dry Dry --
ug/L 03/26/08 --6 ND ND ND
ug/L 09/29/08 --6 ND ND ND
ug/L 03/30/09 --6 0.70 J ND ND
ug/L 09/30/09 ----Dry Dry --
ug/L 03/30/10 --6 ND ND ND
ug/L 09/29/10 --6 ND ND ND
ug/L 04/06/11 --6 0.266 J ND ND
ug/L 09/28/11 --6 ND ND ND
ug/L 03/28/12 --6 0.225 J ND ND
ug/L 09/26/12 --6 ND Dry ND
ug/L 04/01/13 --6 ND ND ND
ug/L 09/25/13 --6 ND ND ND
ug/L 04/01/14 --6 ND ND ND
ug/L 09/29/14 0.220 6 0.541 B Dry 0.421 J
ug/L 03/31/15 0.220 6 ND ND ND
ug/L 10/26/15 0.220 6 Dry Dry ND
ug/L 03/30/16 0.220 6 ND Dry ND
ug/L 09/27/16 0.220 6 ND ND ND
Arsenic ug/L 06/11/02 --10 ND ND ND
Human Health SW Standard = 10 ug/L ug/L 11/01/02 --10 ND ND ND
ug/L 03/06/03 --10 ND ND ND
ug/L 09/23/03 --10 ND ND ND
ug/L 03/11/04 --10 ND ND ND
ug/L 09/23/04 --10 ND ND ND
ug/L 03/10/05 --10 ND ND ND
ug/L 09/22/05 --10 ND ND ND
ug/L 03/06/06 --10 ND ND ND
ug/L 09/19/06 --10 ND ND ND
ug/L 03/21/07 --10 ND ND ND
ug/L 09/28/07 ----Dry Dry --
ug/L 03/26/08 --10 ND 2.4 J ND
ug/L 09/29/08 --10 ND ND ND
ug/L 03/30/09 --10 ND ND ND
ug/L 09/30/09 ----Dry Dry --
ug/L 03/30/10 --10 4.16 J ND ND
ug/L 09/29/10 --10 3.21 J ND ND
ug/L 04/06/11 --10 ND ND ND
ug/L 09/28/11 --10 7.58 B 4.80 B 4.13 J
ug/L 03/28/12 --10 2.81 J ND ND
ug/L 09/26/12 --10 7.28 B Dry 3.89 J
ug/L 04/01/13 --10 ND ND ND
ug/L 09/25/13 --10 5.93 J 8.47 J ND
ug/L 04/01/14 --10 ND ND ND
ug/L 09/29/14 5.40 10 14.3 Dry ND
ug/L 03/31/15 6.80 10 ND ND ND
ug/L 10/26/15 6.80 10 Dry Dry ND
ug/L 03/30/16 6.80 10 ND Dry ND
ug/L 09/27/16 6.80 10 8.02 J 10.5 (10.2)ND
Downstream
Wake County, North Carolina
TABLE 6
Summary of Surface Water Monitoring Results
Detected Constituents
Red Rock Disposal, LLC C&D Landfill, Permit No. 92-28
Detected Monitoring Constituent/Parameter Reporting
Units
Sample
Date
SWS
Reporting
Limit
BlanksMDL
December 2016 Page 2 of 8 Project No. 0739603516
G:\PROJECTS\Waste Industries\Red Rock\Groundwater\GWMR\Sept 2016\Tables\Red Rock Tables September 2016.xlsx
SW-2 SW-3
Downstream
Wake County, North Carolina
TABLE 6
Summary of Surface Water Monitoring Results
Detected Constituents
Red Rock Disposal, LLC C&D Landfill, Permit No. 92-28
Detected Monitoring Constituent/Parameter Reporting
Units
Sample
Date
SWS
Reporting
Limit
BlanksMDL
Barium ug/L 06/11/02 --500 ND ND ND
Human Health SW Standard = 200000 ug/L ug/L 11/01/02 --500 ND ND ND
ug/L 03/06/03 --500 ND ND ND
ug/L 09/23/03 --500 ND ND ND
ug/L 03/11/04 --500 ND ND ND
ug/L 09/23/04 --500 ND ND ND
ug/L 03/10/05 --500 ND ND ND
ug/L 09/22/05 --500 ND ND ND
ug/L 03/06/06 --500 ND ND ND
ug/L 09/19/06 --500 ND ND ND
ug/L 03/21/07 --100 67.8 J 78.9 J 0.30 J
ug/L 09/28/07 ----Dry Dry 0.30 J
ug/L 03/26/08 --100 500 64.8 J 0.30 J
ug/L 09/29/08 --100 136 48.5 J ND
ug/L 03/30/09 --100 205 54.8 J ND
ug/L 09/30/09 ----Dry Dry --
ug/L 03/30/10 --100 147 32.9 J ND
ug/L 09/29/10 --100 107 69.9 J ND
ug/L 04/06/11 --100 113 84.4 J ND
ug/L 09/28/11 --100 146 118 ND
ug/L 03/28/12 --100 133 87.0 J ND
ug/L 09/26/12 --100 169 Dry ND
ug/L 04/01/13 --100 74.1 J 75.7 J 1.16 J
ug/L 09/25/13 --100 55.5 J 68.5 J ND
ug/L 04/01/14 --100 163 75.7 J 1.29 J
ug/L 09/29/14 1.00 100 180 Dry ND
ug/L 03/31/15 1.00 100 98.8 J 69.5 J ND
ug/L 10/26/15 1.00 100 Dry Dry ND
ug/L 03/30/16 1.00 100 96.9 J Dry ND
ug/L 09/27/16 1.00 100 145 145 1.74 J
Beryllium ug/L 03/21/07 --1 ND ND ND
Freshwater Acute SW Standard = 65 ug/L ug/L 09/28/07 ----Dry Dry --
Freshwater Chronic SW Standard = 6.5 ug/L ug/L 03/26/08 --1 ND ND ND
ug/L 09/29/08 --1 ND ND 0.1 J
ug/L 03/30/09 --1 0.28 J 0.08 J ND
ug/L 09/30/09 ----Dry Dry --
ug/L 03/30/10 --1 0.298 J ND ND
ug/L 09/29/10 --1 0.278 J 0.131 J ND
ug/L 04/06/11 --1 0.212 J 0.140 J ND
ug/L 09/28/11 --1 0.227 J ND ND
ug/L 03/28/12 --1 0.379 J 0.168 J ND
ug/L 09/26/12 --1 0.633 J Dry ND
ug/L 04/01/13 --1 ND ND ND
ug/L 09/25/13 --1 ND ND ND
ug/L 04/01/14 --1 0.345 J ND ND
ug/L 09/29/14 0.100 1 ND Dry ND
ug/L 03/31/15 0.100 1 ND ND ND
ug/L 10/26/15 0.100 1 Dry Dry ND
ug/L 03/30/16 0.100 1 ND Dry ND
ug/L 09/27/16 0.100 1 ND ND ND
December 2016 Page 3 of 8 Project No. 0739603516
G:\PROJECTS\Waste Industries\Red Rock\Groundwater\GWMR\Sept 2016\Tables\Red Rock Tables September 2016.xlsx
SW-2 SW-3
Downstream
Wake County, North Carolina
TABLE 6
Summary of Surface Water Monitoring Results
Detected Constituents
Red Rock Disposal, LLC C&D Landfill, Permit No. 92-28
Detected Monitoring Constituent/Parameter Reporting
Units
Sample
Date
SWS
Reporting
Limit
BlanksMDL
Cadmium ug/L 06/11/02 --1 ND ND ND
Freshwater Acute SW Standard = .82 ug/L ug/L 11/01/02 --1 ND ND ND
Freshwater Chronic SW Standard = 0.15 ug/L ug/L 03/06/03 --1 ND ND ND
ug/L 09/23/03 --1 ND ND ND
ug/L 03/11/04 --1 ND ND ND
ug/L 09/23/04 --1 ND ND ND
ug/L 03/10/05 --1 ND ND ND
ug/L 09/22/05 --1 ND ND ND
ug/L 03/06/06 --1 ND ND ND
ug/L 09/19/06 --1 ND ND ND
ug/L 03/21/07 --1 ND ND ND
ug/L 09/28/07 ----Dry Dry --
ug/L 03/26/08 --1 ND ND ND
ug/L 09/29/08 --1 ND ND ND
ug/L 03/30/09 --1 0.51 J 0.13 J ND
ug/L 09/30/09 ----Dry Dry --
ug/L 03/30/10 --1 ND ND ND
ug/L 09/29/10 --1 ND ND ND
ug/L 04/06/11 --1 ND ND ND
ug/L 09/28/11 --1 ND ND ND
ug/L 03/28/12 --1 ND ND ND
ug/L 09/26/12 --1 ND Dry ND
ug/L 04/01/13 --1 ND ND ND
ug/L 09/25/13 --1 ND ND ND
ug/L 04/01/14 --1 ND ND ND
ug/L 09/29/14 0.360 1 ND Dry ND
ug/L 03/31/15 0.360 1 ND ND ND
ug/L 10/26/15 0.360 1 Dry Dry ND
ug/L 03/30/16 0.360 1 ND Dry ND
ug/L 09/27/16 0.360 1 ND ND ND
Chromium ug/L 06/11/02 --10 234 ND ND
Freshwater Acute SW Standard = 180 ug/L ug/L 11/01/02 --10 ND ND ND
Freshwater Chronic SW Standard = 24 ug/L ug/L 03/06/03 --10 ND ND ND
ug/L 09/23/03 --10 ND ND ND
ug/L 03/11/04 --10 ND ND ND
ug/L 09/23/04 --10 ND ND ND
ug/L 03/10/05 --10 ND ND ND
ug/L 09/22/05 --10 ND ND ND
ug/L 03/06/06 --10 ND ND ND
ug/L 09/19/06 --10 ND ND ND
ug/L 03/21/07 --10 ND ND ND
ug/L 09/28/07 ----Dry Dry --
ug/L 03/26/08 --10 10.0 ND ND
ug/L 09/29/08 --10 ND ND ND
ug/L 03/30/09 --10 4.2 J 1.0 J ND
ug/L 09/30/09 ----Dry Dry --
ug/L 03/30/10 --10 2.97 J ND ND
ug/L 09/29/10 --10 2.64 J 1.47 J ND
ug/L 04/06/11 --10 3.94 J 1.31 J ND
ug/L 09/28/11 --10 5.15 J 4.32 J ND
ug/L 03/28/12 --10 4.84 J ND ND
ug/L 09/26/12 --10 9.73 J Dry ND
ug/L 04/01/13 --10 1.48 J ND ND
ug/L 09/25/13 --10 2.64 J 2.65 J ND
ug/L 04/01/14 --10 8.34 J 3.72 J ND
ug/L 09/29/14 1.40 10 14.2 Dry ND
ug/L 03/31/15 1.40 10 3.70 J 2.37 J ND
ug/L 10/26/15 1.40 10 Dry Dry ND
ug/L 03/30/16 1.40 10 5.05 J Dry ND
ug/L 09/27/16 1.40 10 10.0 9.93 J ND
December 2016 Page 4 of 8 Project No. 0739603516
G:\PROJECTS\Waste Industries\Red Rock\Groundwater\GWMR\Sept 2016\Tables\Red Rock Tables September 2016.xlsx
SW-2 SW-3
Downstream
Wake County, North Carolina
TABLE 6
Summary of Surface Water Monitoring Results
Detected Constituents
Red Rock Disposal, LLC C&D Landfill, Permit No. 92-28
Detected Monitoring Constituent/Parameter Reporting
Units
Sample
Date
SWS
Reporting
Limit
BlanksMDL
Cobalt ug/L 03/21/07 --10 ND ND ND
No SW Standard ug/L 09/28/07 ----Dry Dry --
ug/L 03/26/08 --10 8.9 J 2.6 J ND
ug/L 09/29/08 --10 ND ND ND
ug/L 03/30/09 --10 3.6 J 0.6 J ND
ug/L 09/30/09 ----Dry Dry --
ug/L 03/30/10 --10 2.37 J ND ND
ug/L 09/29/10 --10 2.01 J 1.36 J ND
ug/L 04/06/11 --10 1.93 J 1.58 J ND
ug/L 09/28/11 --10 1.85 J 3.58 J ND
ug/L 03/28/12 --10 2.54 J 1.55 J ND
ug/L 09/26/12 --10 2.77 J Dry ND
ug/L 04/01/13 --10 ND ND ND
ug/L 09/25/13 --10 ND ND ND
ug/L 04/01/14 --10 2.55 J ND ND
ug/L 09/29/14 1.10 10 3.81 J Dry ND
ug/L 03/31/15 1.10 10 ND ND ND
ug/L 10/26/15 1.10 10 Dry Dry ND
ug/L 03/30/16 1.10 10 1.63 J Dry ND
ug/L 09/27/16 1.10 10 2.79 J 2.55 J ND
Copper ug/L 03/21/07 --10 ND ND 0.60 J
Freshwater Acute SW Standard = 3.6 ug/L ug/L 09/28/07 ----Dry Dry --
Freshwater Chronic SW Standard = 2.7 ug/L ug/L 03/26/08 --10 ND 0.90 B 0.60 J
ug/L 09/29/08 --10 ND ND ND
ug/L 03/30/09 --10 2.02 B 2.05 B 1.39 J
ug/L 09/30/09 ----Dry Dry --
ug/L 03/30/10 --10 2.05 J ND ND
ug/L 09/29/10 --10 2.19 J 2.31 J ND
ug/L 04/06/11 --10 3.82 B 2.46 B 2.07 J
ug/L 09/28/11 --10 3.29 J 5.21 J ND
ug/L 03/28/12 --10 3.83 J ND ND
ug/L 09/26/12 --10 7.86 J Dry ND
ug/L 04/01/13 --10 2.90 J 2.25 J ND
ug/L 09/25/13 --10 1.71 J 2.12 J ND
ug/L 04/01/14 --10 5.40 J 2.85 J ND
ug/L 09/29/14 1.60 10 ND Dry ND
ug/L 03/31/15 1.60 10 3.22 J 2.02 J ND
ug/L 10/26/15 1.60 10 Dry Dry ND
ug/L 03/30/16 1.60 10 4.61 J Dry ND
ug/L 09/27/16 1.60 10 9.51 B 7.73 B 4.36 J
December 2016 Page 5 of 8 Project No. 0739603516
G:\PROJECTS\Waste Industries\Red Rock\Groundwater\GWMR\Sept 2016\Tables\Red Rock Tables September 2016.xlsx
SW-2 SW-3
Downstream
Wake County, North Carolina
TABLE 6
Summary of Surface Water Monitoring Results
Detected Constituents
Red Rock Disposal, LLC C&D Landfill, Permit No. 92-28
Detected Monitoring Constituent/Parameter Reporting
Units
Sample
Date
SWS
Reporting
Limit
BlanksMDL
Lead ug/L 06/11/02 --10 14 ND ND
Freshwater Acute SW Standard = 14 ug/L ug/L 11/01/02 --10 11 ND ND
Freshwater Chronic SW Standard = 0.54 ug/L ug/L 03/06/03 --10 ND ND ND
ug/L 09/23/03 --10 15 ND ND
ug/L 03/11/04 --10 14 ND ND
ug/L 09/23/04 --10 ND ND ND
ug/L 03/10/05 --10 ND ND ND
ug/L 09/22/05 --10 ND 23 ND
ug/L 03/06/06 --10 ND ND ND
ug/L 09/19/06 --10 ND ND ND
ug/L 03/21/07 --10 3.4 B 2.2 B 2.7 J
ug/L 09/28/07 ----Dry Dry --
ug/L 03/26/08 --10 29.4 ND ND
ug/L 09/29/08 --10 2.6 J ND ND
ug/L 03/30/09 --10 8.0 J 3.5 J ND
ug/L 09/30/09 ----Dry Dry --
ug/L 03/30/10 --10 12.6 3.17 J ND
ug/L 09/29/10 --10 6.17 J 4.38 J ND
ug/L 04/06/11 --10 6.75 J 4.03 J ND
ug/L 09/28/11 --10 10.5 ND ND
ug/L 03/28/12 --10 9.18 J 3.44 J ND
ug/L 09/26/12 --10 15.5 Dry ND
ug/L 04/01/13 --10 ND ND ND
ug/L 09/25/13 --10 ND ND ND
ug/L 04/01/14 --10 16.1 3.14 J ND
ug/L 09/29/14 2.10 10 ND Dry ND
ug/L 03/31/15 3.10 10 3.18 J ND ND
ug/L 10/26/15 3.10 10 Dry Dry ND
ug/L 03/30/16 3.10 10 ND Dry ND
ug/L 09/27/16 3.10 10 10.5 (7.26)14.7 (11.6)ND
Nickel ug/L 03/21/07 --50 ND ND ND
Freshwater Acute SW Standard = 140 ug/L ug/L 09/28/07 ----Dry Dry --
Freshwater Chronic SW Standard = 16 ug/L ug/L 03/26/08 --50 ND ND ND
ug/L 09/29/08 --50 1.8 J ND ND
ug/L 03/30/09 --50 4.8 J 1.2 B 0.6 J
ug/L 09/30/09 ----Dry Dry --
ug/L 03/30/10 --50 ND ND ND
ug/L 09/29/10 --50 ND ND ND
ug/L 04/06/11 --50 ND ND ND
ug/L 09/28/11 --50 1.91 J 2.75 J ND
ug/L 03/28/12 --50 ND ND ND
ug/L 09/26/12 --50 2.36 J Dry ND
ug/L 04/01/13 --50 ND ND ND
ug/L 09/25/13 --50 ND ND ND
ug/L 04/01/14 --50 2.53 J 2.13 J ND
ug/L 09/29/14 1.80 50 ND Dry ND
ug/L 03/31/15 1.80 50 ND ND ND
ug/L 10/26/15 1.80 50 Dry Dry ND
ug/L 03/30/16 1.80 50 2.75 J Dry ND
ug/L 09/27/16 2.20 50 5.70 J 4.24 J ND
December 2016 Page 6 of 8 Project No. 0739603516
G:\PROJECTS\Waste Industries\Red Rock\Groundwater\GWMR\Sept 2016\Tables\Red Rock Tables September 2016.xlsx
SW-2 SW-3
Downstream
Wake County, North Carolina
TABLE 6
Summary of Surface Water Monitoring Results
Detected Constituents
Red Rock Disposal, LLC C&D Landfill, Permit No. 92-28
Detected Monitoring Constituent/Parameter Reporting
Units
Sample
Date
SWS
Reporting
Limit
BlanksMDL
Selenium ug/L 06/11/02 --20 ND ND ND
Freshwater SW Standard = 140 ug/L ug/L 11/01/02 --20 ND ND ND
ug/L 03/06/03 --20 ND ND ND
ug/L 09/23/03 --20 ND ND ND
ug/L 03/11/04 --20 ND ND ND
ug/L 09/23/04 --20 ND ND ND
ug/L 03/10/05 --20 ND ND ND
ug/L 09/22/05 --20 ND ND ND
ug/L 03/06/06 --20 ND ND ND
ug/L 09/19/06 --20 ND ND ND
ug/L 03/21/07 --10 2.9 B ND 2.5 J
ug/L 09/28/07 ----Dry Dry --
ug/L 03/26/08 --10 ND ND ND
ug/L 09/29/08 --10 ND ND ND
ug/L 03/30/09 --10 ND ND ND
ug/L 09/30/09 ----Dry Dry --
ug/L 03/30/10 --10 ND ND ND
ug/L 09/29/10 --10 ND ND ND
ug/L 04/06/11 --10 ND ND ND
ug/L 09/28/11 --10 ND ND ND
ug/L 03/28/12 --10 ND ND 3.32 J
ug/L 09/26/12 --10 ND Dry ND
ug/L 04/01/13 --10 ND ND ND
ug/L 09/25/13 --10 ND ND ND
ug/L 04/01/14 --10 ND ND ND
ug/L 09/29/14 5.00 10 ND Dry ND
ug/L 03/31/15 5.00 10 ND ND ND
ug/L 03/31/15 0.910 10 ND ND ND
ug/L 10/26/15 0.910 10 Dry Dry ND
ug/L 03/30/16 0.910 10 ND Dry ND
ug/L 09/27/16 6.20 10 ND ND ND
Silver ug/L 06/11/02 --10 ND ND ND
Freshwater Acute SW Standard = 30 ug/L ug/L 11/01/02 --10 ND ND ND
Freshwater Chronic SW Standard = 0.06 ug/L ug/L 03/06/03 --10 ND ND ND
ug/L 09/23/03 --10 ND ND ND
ug/L 03/11/04 --10 ND ND ND
ug/L 09/23/04 --10 ND ND ND
ug/L 03/10/05 --10 ND ND ND
ug/L 09/22/05 --10 ND ND ND
ug/L 03/06/06 --10 ND ND ND
ug/L 09/19/06 --10 ND ND ND
ug/L 03/21/07 --10 ND ND ND
ug/L 09/28/07 ----Dry Dry --
ug/L 03/26/08 --10 ND ND ND
ug/L 09/29/08 --10 ND ND ND
ug/L 03/30/09 --10 1.0 J ND ND
ug/L 09/30/09 ----Dry Dry --
ug/L 03/30/10 --10 ND ND ND
ug/L 09/29/10 --10 ND ND ND
ug/L 04/06/11 --10 ND ND ND
ug/L 09/28/11 --10 ND ND ND
ug/L 03/28/12 --10 ND ND ND
ug/L 09/26/12 --10 ND Dry ND
ug/L 04/01/13 --10 ND ND ND
ug/L 09/25/13 --10 ND ND ND
ug/L 04/01/14 --10 ND ND ND
ug/L 09/29/14 1.90 10 ND Dry ND
ug/L 03/31/15 1.90 10 ND ND ND
ug/L 10/26/15 1.90 10 Dry Dry ND
ug/L 03/30/16 1.90 10 ND Dry ND
ug/L 09/27/16 1.90 10 ND ND ND
December 2016 Page 7 of 8 Project No. 0739603516
G:\PROJECTS\Waste Industries\Red Rock\Groundwater\GWMR\Sept 2016\Tables\Red Rock Tables September 2016.xlsx
SW-2 SW-3
Downstream
Wake County, North Carolina
TABLE 6
Summary of Surface Water Monitoring Results
Detected Constituents
Red Rock Disposal, LLC C&D Landfill, Permit No. 92-28
Detected Monitoring Constituent/Parameter Reporting
Units
Sample
Date
SWS
Reporting
Limit
BlanksMDL
Thallium ug/L 03/21/07 --5.5 ND ND ND
No SW Standard ug/L 09/28/07 --5.5 Dry Dry --
ug/L 03/26/08 --5.5 0.159 J 0.046 J ND
ug/L 09/29/08 --5.5 0.050 B ND 0.062 J
ug/L 03/30/09 --5.5 ND ND ND
ug/L 09/30/09 ----Dry Dry --
ug/L 03/30/10 --5.5 ND ND ND
ug/L 09/29/10 --5.5 ND ND ND
ug/L 04/06/11 --5.5 ND ND ND
ug/L 09/28/11 --5.5 ND ND ND
ug/L 03/28/12 --5.5 ND ND ND
ug/L 09/26/12 --5.5 ND Dry ND
ug/L 04/01/13 --5.5 ND ND ND
ug/L 09/25/13 --5.5 ND ND ND
ug/L 04/01/14 --5.5 0.175 J ND ND
ug/L 09/29/14 0.110 5.5 0.162 B Dry 0.253 J
ug/L 03/31/15 0.110 5.5 ND ND ND
ug/L 10/26/15 0.110 5.5 Dry Dry ND
ug/L 03/30/16 0.110 5.5 ND Dry ND
ug/L 09/27/16 0.110 5.5 ND ND ND
Vanadium ug/L 03/21/07 --25 1.1 J 1.8 J ND
No SW Standard ug/L 09/28/07 ----Dry Dry --
ug/L 03/26/08 --25 44.9 1.4 J ND
ug/L 09/29/08 --25 ND ND ND
ug/L 03/30/09 --25 12.7 J 3.9 J ND
ug/L 09/30/09 ----Dry Dry --
ug/L 03/30/10 --25 15.1 J 1.96 J ND
ug/L 09/29/10 --25 12.6 J 6.54 J ND
ug/L 04/06/11 --25 13.1 J 4.07 J ND
ug/L 09/28/11 --25 18.0 J 7.24 J ND
ug/L 03/28/12 --25 26.1 3.41 J ND
ug/L 09/26/12 --25 42.0 Dry ND
ug/L 04/01/13 --25 3.87 J 3.03 J ND
ug/L 09/25/13 --25 3.78 J 3.95 J ND
ug/L 04/01/14 --25 38.2 8.80 J ND
ug/L 09/29/14 1.40 25 13.7 J Dry ND
ug/L 03/31/15 1.40 25 11.7 J 3.37 J ND
ug/L 10/26/15 1.40 25 Dry Dry ND
ug/L 03/30/16 1.40 25 14.1 J Dry ND
ug/L 09/27/16 1.40 25 18.5 J 22.4 J ND
Zinc ug/L 03/21/07 --10 4.9 B 8.4 J 1.1 J
Freshwater Acute SW Standard = 36 ug/L ug/L 09/28/07 ----Dry Dry --
Freshwater Chronic SW Standard = 36 ug/L ug/L 03/26/08 --10 73.2 15.1 2.8 J
ug/L 09/29/08 --10 36.3 11.8 ND
ug/L 03/30/09 --10 236 9.0 J ND
ug/L 09/30/09 ----Dry Dry --
ug/L 03/30/10 --10 30.6 15.6 ND
ug/L 09/29/10 --10 17.5 11.9 ND
ug/L 04/06/11 --10 19.4 7.82 J ND
ug/L 09/28/11 --10 20.0 10.6 ND
ug/L 03/28/12 --10 22.5 9.60 J ND
ug/L 09/26/12 --10 26.7 Dry ND
ug/L 04/01/13 --10 5.17 J 9.35 J ND
ug/L 09/25/13 --10 5.19 J 5.87 J ND
ug/L 04/01/14 --10 22.8 8.27 J ND
ug/L 09/29/14 3.80 10 7.74 J Dry ND
ug/L 03/31/15 3.80 10 13.7 5.46 J ND
ug/L 10/26/15 3.80 10 Dry Dry ND
ug/L 03/30/16 3.80 10 10.3 Dry ND
ug/L 09/27/16 4.40 10 13.9 20.7 ND
December 2016 Page 8 of 8 Project No. 0739603516
G:\PROJECTS\Waste Industries\Red Rock\Groundwater\GWMR\Sept 2016\Tables\Red Rock Tables September 2016.xlsx
SW-2 SW-3
Downstream
Wake County, North Carolina
TABLE 6
Summary of Surface Water Monitoring Results
Detected Constituents
Red Rock Disposal, LLC C&D Landfill, Permit No. 92-28
Detected Monitoring Constituent/Parameter Reporting
Units
Sample
Date
SWS
Reporting
Limit
BlanksMDL
Acetone ug/L 03/21/07 --100 ND ND ND
No SW Standard ug/L 03/26/08 --100 9.2 J 6.7 J ND
ug/L 09/29/08 --100 11 J ND 3.5 J
ug/L 03/30/09 --100 29 J ND ND
ug/L 09/30/09 ----Dry Dry --
ug/L 03/30/10 --100 ND ND ND
ug/L 09/29/10 --100 ND ND ND
ug/L 04/06/11 --100 4.3 J ND ND
ug/L 09/28/11 --100 ND 37 J ND
ug/L 03/28/12 --100 ND 8.7 J ND
ug/L 09/26/12 --100 ND Dry ND
ug/L 04/01/13 --100 ND ND ND
ug/L 09/25/13 --100 ND ND ND
ug/L 04/01/14 --100 ND ND ND
ug/L 09/29/14 1.2 100 12 J Dry ND
ug/L 03/31/15 1.2 100 ND ND ND
ug/L 10/26/15 1.2 100 Dry Dry ND
ug/L 03/30/16 1.2 100 ND Dry ND
ug/L 09/27/16 10 100 ND ND ND
2-Butanone ug/L 03/21/07 --100 ND ND ND
No SW Standard ug/L 03/26/08 --100 ND ND ND
ug/L 09/29/08 --100 ND ND ND
ug/L 03/30/09 --100 26 J ND ND
ug/L 09/30/09 ----Dry Dry --
ug/L 03/30/10 --100 ND ND ND
ug/L 09/29/10 --100 ND ND ND
ug/L 04/06/11 --100 ND ND ND
ug/L 09/28/11 --100 ND 4.9 J ND
ug/L 03/28/12 --100 ND ND ND
ug/L 09/26/12 --100 ND Dry ND
ug/L 04/01/13 --100 ND ND ND
ug/L 09/25/13 --100 ND ND ND
ug/L 04/01/14 --100 ND ND ND
ug/L 09/29/14 1.3 100 ND Dry ND
ug/L 03/31/15 1.3 100 ND ND ND
ug/L 10/26/15 1.3 100 Dry Dry ND
ug/L 03/30/16 1.3 100 ND Dry ND
ug/L 09/27/16 1.3 100 ND ND ND
Notes:mg/L =milligrams per liter
ug/L =micrograms per liter
S.U. =Standard Units
NTU =Nephelometric Turbidity Units
ND =Not detected at the stated reporting limit
uS/cm=microsiemens per centimeter
mV =Millivolts
J =Estimated value
-- =no data
( ) =Re-analysis results
Bolded =Concentrations above Human Health or Chronic Surface Water Standard
Shaded and Bold =Concentration above Acute and Chronic Surface Water Standards
Blanks =field, trip and method blanks
1)The previous SW-1 location was in a wetland area that had been removed from
the site for landfill expansion following the March 2004 sampling event. During
the March 2007 sampling event, SW-1 was relocated. Due to construction
activities prior to the March 2008 sampling event, no upstream surface monitoring
point is available to sample.
2) s C Freshwater Aquatic Life or Human Health classification
for the Jim Branch in the Cape Fear basin per 15A NCAC 2B.
SWS Reporting Limit =North Carolina Solid Waste Section Reporting Limit
December 2016 Page 1 of 3 Project No. 0739603516
G:\PROJECTS\Waste Industries\Red Rock\Groundwater\GWMR\Sept 2016\Tables\Red Rock Tables September 2016.xlsx
SW-2 SW-3
pH (field)S.U.06/11/02 7.70 6.50
S.U.11/01/02 6.10 7.00
S.U.03/06/03 6.00 5.80
S.U.09/23/03 5.20 5.10
S.U.03/11/04 6.30 6.40
S.U.09/23/04 6.70 6.80
S.U.03/10/05 6.60 7.20
S.U.09/22/05 7.60 7.20
S.U.03/06/06 7.60 4.80
S.U.09/19/06 7.00 6.90
S.U.03/21/07 8.63 6.68
S.U.09/28/07 Dry Dry
S.U.03/26/08 7.52 6.11
S.U.09/29/08 7.52 6.99
S.U.03/30/09 7.60 6.68
S.U.09/30/09 Dry Dry
S.U.03/30/10 7.63 6.17
S.U.09/29/10 10.68 10.78
S.U.04/06/11 7.68 5.68
S.U.09/28/11 7.98 6.37
S.U.03/28/12 7.46 6.40
S.U.09/26/12 8.78 Dry
S.U.04/01/13 7.31 6.16
S.U.09/25/13 8.23 7.11
S.U.04/01/14 7.84 6.42
S.U.09/29/14 7.54 Dry
S.U.03/31/15 7.86 6.88
S.U.10/26/15 Dry Dry
S.U.03/30/16 7.24 Dry
S.U.09/27/16 7.54 6.79
Specific Conductance uS/cm 06/11/02 140 120
(lab prior to 9/19/06 event)uS/cm 11/01/02 105 155
uS/cm 03/06/03 82 90
uS/cm 09/23/03 116 128
uS/cm 03/11/04 16 114
uS/cm 09/23/04 138 112
uS/cm 03/10/05 108 222
uS/cm 09/22/05 166 300
uS/cm 03/06/06 162 295
uS/cm 09/19/06 160 170
uS/cm 03/21/07 153 285
uS/cm 09/28/07 Dry Dry
uS/cm 03/26/08 779 195
uS/cm 09/29/08 261 190
uS/cm 03/30/09 585 127
uS/cm 09/30/09 Dry Dry
uS/cm 03/30/10 235 222
uS/cm 09/29/10 70 85
uS/cm 04/06/11 478 219
uS/cm 09/28/11 206 216
uS/cm 03/28/12 162 208
uS/cm 09/26/12 57 Dry
uS/cm 04/01/13 200 210
uS/cm 09/25/13 205 291
uS/cm 04/01/14 232 269
uS/cm 09/29/14 1864 Dry
uS/cm 03/31/15 246 223
uS/cm 10/26/15 Dry Dry
uS/cm 03/30/16 442 Dry
uS/cm 09/27/16 397 372
Downstream
TABLE 7
Summary of Field Parameters from Surface Water Monitoring Points
Red Rock Disposal, LLC C&D Landfill, Permit No. 92-28
Wake County, North Carolina
Detected Monitoring Constituent/Parameter Reporting
Units
Sample
Date
December 2016 Page 2 of 3 Project No. 0739603516
G:\PROJECTS\Waste Industries\Red Rock\Groundwater\GWMR\Sept 2016\Tables\Red Rock Tables September 2016.xlsx
SW-2 SW-3
Downstream
TABLE 7
Summary of Field Parameters from Surface Water Monitoring Points
Red Rock Disposal, LLC C&D Landfill, Permit No. 92-28
Wake County, North Carolina
Detected Monitoring Constituent/Parameter Reporting
Units
Sample
Date
Temperature Celsius 06/11/02 20.0 21.0
(lab prior to 9/19/06 event)Celsius 11/01/02 11.0 11.0
Celsius 03/06/03 13.0 13.0
Celsius 09/23/03 22.0 21.0
Celsius 03/11/04 8.0 8.0
Celsius 09/23/04 20.0 18.0
Celsius 03/10/05 7.0 6.0
Celsius 09/22/05 24.0 23.0
Celsius 03/06/06 13.0 11.0
Celsius 09/19/06 23.0 21.0
Celsius 03/21/07 11.7 12.4
Celsius 09/28/07 Dry Dry
Celsius 03/26/08 7.42 10.5
Celsius 09/29/08 21.66 19.59
Celsius 03/30/09 17.30 11.04
Celsius 09/30/09 Dry Dry
Celsius 03/30/10 14.44 17.35
Celsius 09/29/10 21.30 21.41
Celsius 04/06/11 13.61 9.56
Celsius 09/28/11 22.77 24.10
Celsius 03/28/12 15.66 21.20
Celsius 09/26/12 17.94 Dry
Celsius 04/01/13 13.71 19.26
Celsius 09/25/13 16.6 18.6
Celsius 04/01/14 12.4 16.7
Celsius 09/29/14 17.5 Dry
Celsius 03/31/15 9.30 16.2
Celsius 10/26/15 Dry Dry
Celsius 03/30/16 15.2 Dry
Celsius 09/27/16 21.7 20.9
Turbidity (field)NTU 03/21/07 146 183
NTU 09/28/07 Dry Dry
NTU 03/26/08 >1000 446
NTU 09/29/08 151 22.7
NTU 03/30/09 407 57.7
NTU 09/30/09 Dry Dry
NTU 03/30/10 403 35.7
NTU 09/29/10 225 291
NTU 04/06/11 191 46.6
NTU 09/28/11 484 115
NTU 03/28/12 331 77.5
NTU 09/26/12 682 Dry
NTU 04/01/13 61.7 56.0
NTU 09/25/13 47.7 66.3
NTU 04/01/14 624 129
NTU 09/29/14 83.2 Dry
NTU 03/31/15 118 34.3
NTU 10/26/15 Dry Dry
NTU 03/30/16 161 Dry
NTU 09/27/16 96.1 146
December 2016 Page 3 of 3 Project No. 0739603516
G:\PROJECTS\Waste Industries\Red Rock\Groundwater\GWMR\Sept 2016\Tables\Red Rock Tables September 2016.xlsx
SW-2 SW-3
Downstream
TABLE 7
Summary of Field Parameters from Surface Water Monitoring Points
Red Rock Disposal, LLC C&D Landfill, Permit No. 92-28
Wake County, North Carolina
Detected Monitoring Constituent/Parameter Reporting
Units
Sample
Date
Oxidation Reduction Potential mV 03/21/07 67 114
(field)mV 09/28/07 Dry Dry
mV 03/26/08 118.7 132.8
mV 09/29/08 76 29
mV 03/30/09 53.4 81.6
mV 09/30/09 Dry Dry
mV 03/30/10 74.8 115.3
mV 09/29/10 -368.9 -356.4
mV 04/06/11 87.0 150.2
mV 09/28/11 43.7 102
mV 03/28/12 28.3 58.1
mV 09/26/12 -49.0 Dry
mV 04/01/13 -17.4 48.4
mV 09/25/13 46.9 111.1
mV 04/01/14 71.3 46.7
mV 09/29/14 -105.2 Dry
mV 03/31/15 66.7 80.1
mV 10/26/15 Dry Dry
mV 03/30/16 156 Dry
mV 09/27/16 99.9 251.9
Dissolved Oxygen (field)mg/L 03/21/07 10.3 9.9
mg/L 09/28/07 Dry Dry
mg/L 03/26/08 10.36 5.16
mg/L 09/29/08 9.09 6.79
mg/L 03/30/09 7.98 10.30
mg/L 09/30/09 Dry Dry
mg/L 03/30/10 8.93 9.71
mg/L 09/29/10 8.93 8.77
mg/L 04/06/11 10.17 7.25
mg/L 09/28/11 4.36 3.62
mg/L 03/28/12 8.82 5.52
mg/L 09/26/12 6.71 Dry
mg/L 04/01/13 7.54 8.67
mg/L 09/25/13 6.59 7.47
mg/L 04/01/14 7.49 7.86
mg/L 09/29/14 1.84 Dry
mg/L 03/31/15 9.93 11.41
mg/L 10/26/15 Dry Dry
mg/L 03/30/16 6.49 Dry
mg/L 09/27/16 3.10 4.93
Notes:S.U. =Standard Units
NTU =Nephelometric Turbidity Units
uS/cm =microsiemens per centimeter
mg/L =milligramer per liter
mV =Millivolts
-- =no data1) The previous SW-1 location was in a wetland area
that had been removed from the site for landfill
expansion following the March 2004 sampling event.
During the March 2007 sampling event, SW-1 was
relocated. Due to construction activities occurring prior
to March 2008 sampling event, no upstream surface
monitoring point is available to sample.

DRAWING
280
280
270260270
290
2
6
0
300
300
290
280
2
7
0
270290290
250
250
25
0
250
280i3
i2i1
MW-10
MW-7
MW-8
MW-11
MW-12
MW-14
MW-6T
MW-5
MW-4
MW-3MW-2T
SW-3
SW-2
287.38
303.52
257.69 248.70
250.48
250.63
282.45
288.20
290.26
292.24
266.25
CONSULTANT
DESIGN
PREPARED
REVIEW
APPROVED
YYYY-MM-DD TITLE
PROJECT No.Rev.
PROJECTCLIENT
Path: \\greensboro\CAD\_2007\07396035 - WI - Red Rock\PRODUCTION\D - 2016 GW\ | File Name: 0739603515D002.dwgIF THIS MEASUREMENT DOES NOT MATCH WHAT IS SHOWN, THE SHEET SIZE HAS BEEN MODIFIED FROM: ANSI D01 in0739603516
PHASE
100
DRAWING
10
2016-11-15
ACW
RPK
DYR
RPK
RED ROCK DISPOSAL, LLC CONSTRUCTION
DEMOLITION LANDFILL, PERMIT NO. 92-28
WAKE COUNTY, NC
WASTE INDUSTRIES USA INC.
GROUNDWATER CONTOUR MAP
SEPTEMBER 27, 2016
SITE LOCATION
SITE LOCATION MAP
(DRAWING IS NOT TO SCALE)
LEGEND
NOTES
250
i1
257.69
SW-3
MW-2T
MW-7
NM
1. TOPOGRAPHIC CONTOUR INTERVAL = 2 FEET
2. GROUNDWATER SURFACE CONTOUR INTERVAL = 10 FEET
3. GROUNDWATER ELEVATIONS MEASURED ON SEPTEMBER 27, 2016.
4. GROUNDWATER CONTOURS BASED ON LINEAR INTERPOLATION BETWEEN AND
EXTRAPOLATION FROM KNOWN DATA, TOPOGRAPHIC CONTOURS, AND KNOWN FIELD
CONDITIONS. THEREFORE, GROUNDWATER CONTOURS MAY NOT REFLECT ACTUAL
GROUNDWATER CONDITIONS.
5. GROUNDWATER CONTOUR LINES SHOW THE WATER TABLE SHAPE AND ELEVATION. THESE
CONTOURS ARE INFERRED LINES FOLLOWING THE GROUNDWATER SURFACE AT A
CONSTANT ELEVATION ABOVE SEA LEVEL. THE GROUNDWATER FLOW DIRECTION IS
GENERALLY PERPENDICULAR TO THE GROUNDWATER SURFACE CONTOURS, SIMILAR TO
THE RELATIONSHIP BETWEEN SURFACE WATER FLOW AND TOPOGRAPHIC CONTOURS.
6. GRID COORDINATES REFERENCE NC STATE PLANE SYSTEM (NAD 1983)
7. ELEVATION REFERENCE U.S.G.S VERTICAL DATUM (MSL).
8. BASE MAP PROVIDED BY RICHARDSON SMITH GARDNER & ASSOCIATES. TOPOGRAPHY
PROVIDED FROM AERIAL SURVEYS PREPARED BY SURVERYING SOLUTIONS P.C.,
PHOTGRAPHY DATES JANUARY 8, 2015 AND JANUARY 20, 2014.
9. THE FACILITY BOUNDARY SHOWN REFERENCES DRAWING TITLED, "BOUNDARY SURVEY FOR
WASTE INDUSTRIES." PREPARED BY SURVEY SOLUTIONS, P.C. DATED 12/27/00, SCALE 1" =
400'. (G.N. RICHARDSON & ASSOCIATES, INC SEPTEMBER 2006)
10. GROUNDWATER CONTOURS IN THE VICINITY OF MW-7 AND MW-8 WERE CONSTRUCTED
BASED ON HISTORICAL DATA.
11. WELL MW-13 WAS DECOMMISSIONED BY RSG ON MAY 2, 2011.
10 FT. CONTOUR INTERVAL
2 FT. CONTOUR INTERVAL
FACILITY BOUNDARY
TREELINE
EXISTING ROAD
STREAM
GROUNDWATER SURFACE
10 FT. CONTOURS
APPROXIMATE GROUNDWATER FLOW
SEGMENT USED TO CALCULATE GRADIENT
GROUNDWATER MONITORING WELL WITH
GROUNDWATER ELEVATION
SURFACE WATER MONITORING POINT
NON-COMPLIANCE WELL (WATER LEVELS ONLY)
NOT MEASURED
0
FEET
200 400
SCALE
GOLDER ASSOCIATES NC. INC.

APPENDIX A
GROUNDWATER, SURFACE WATER, AND LEACHATE SAMPLING LOGS
Caption Text

APPENDIX B
SEPTEMBER 2016 GROUNDWATER AND SURFACE WATER CERTIFICATES-OF-
ANALYSIS, CHAIN-OF-CUSTODY FORMS AND LABORATORY DATA REVIEWS
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Page 1 of 1
GOLDER ASSOCIATES INC.
QUALITY ASSURANCE & QUALITY CONTROL
LABORATORY DATA REVIEW
Page 1 of 5

Project Name: Waste Industries – Red Rock C&D Landfill
Project Reference Number: 0739603516.100
Sampling Event Date: September 27, 2016
Review Date: October 27, 2016 Initials: AW
Report #: CZ13506
Person(s) performing the review are to initial each item on this form as acknowledgement
of data acceptance, or as acknowledgement of a review issue. In the case of the latter, a
brief explanation should follow the applicable item.

Golder Associates Inc. has reviewed the laboratory certificates of analysis, chain-of-custody form, and laboratory provided sample group quality assurance and quality control data for the above referenced sample group to identify potential bias or inaccuracy, in general accordance
with the following United States Environmental Protection Agency documents:
 Region III Modifications to Functional Guidelines for Organic Data Review Multi-Media, Multi-Concentration, September 1994;
 Region III Modifications to the Laboratory Data Validation Functional Guidelines for
Evaluating Inorganic Analyses, April 1993; and
 Laboratory Data Validation Functional Guidelines for Evaluating Inorganic Analyses, July
1998.
COMPLIANCE ANALYTE LIST(S) (check all that apply)
X NC C & D List (GW)
X NC Appendix I (SW)
NC Appendix I + Detects
NC Appendix II
NC Subtitle D Leachate List
NC Surface Water Compliance List
Other:

1.0 CHAIN OF CUSTODY (COC) REVIEW
AW COC was properly signed by all parties.
AW Correct project name and number are on the form.
AW Sample receipt condition at laboratory was acceptable.
AW Each sample and blank submitted for analysis appears in the report.

Notes:

GOLDER ASSOCIATES INC.
QUALITY ASSURANCE & QUALITY CONTROL
LABORATORY DATA REVIEW
Page 2 of 5

2.0 SAMPLE HOLDING TIMES

AW Holding times for extraction and/or analysis were met for each analytical Method (see below for reference).

Notes:
Review Criteria
Method Analytes Holding Time
SW-846 Method 8260 VOCs 14 days
SW-846 Methods 8270, 8080, 8081, 8082, and 8151 SVOCs, PCBs, pesticides and herbicides
7 days for extraction, 40 days from extraction for analysis
SW-846 Methods 6000 and 7000
Series
Metals except mercury 6 months (no temperature
requirements)
SW-846 Method 7470 Mercury 28 days
SW-846 Method 376.1 Sulfide 7 days
EPA Method 335.2 Cyanide 14 days
EPA Method 300 Chloride 28 days
EPA Method 300 Nitrate/Sulfate 48 hours/28 days
EPA Method 405.1 BOD 48 hours
EPA Method 410.4 COD 28 days
EPA Method 365.4 Phosphorous 28 days

3.0 LABORATORY QUALITY CONTROL REVIEW
AW Laboratory analyzed at least one internal blank for each method, where applicable.
AW Laboratory blank is interference-free.
 For EPA 3005A, blank (6J05028-BLK1) with Manganese @ 1.85 ug/L J and Barium @ 1.74 ug/L J

AW Surrogate recoveries are provided for each analytical method, where applicable.
AW Surrogate recoveries for each method are within the acceptable limits (i.e., at least 50% of the surrogates were within range).
AW MS/MSD/LCS data results are provided for each analytical method.
AW MS/MSD/LCS recoveries for each method are within the acceptable limits (i.e., at
least 1 of the 3 were within range).
 The spike recovery of Mercury was outside of control limits for the MSD sample, the recovery of Thallium was outside of the control limits for the Post Spike sample. The QC
batches were approved based on acceptable LCS recovery of these elements.
 The spike recoveries of Alkalinity, Chloride, and Sulfate were outside of control limits for
the MS and/or MSD samples. The QC batches were approved based on acceptable LCS recovery for these analytes.

GOLDER ASSOCIATES INC.
QUALITY ASSURANCE & QUALITY CONTROL
LABORATORY DATA REVIEW
Page 3 of 5

4.0 ANALYTE LISTS/METHODS

AW The proper number of constituents are present for each analyte list as identified above (including detects where applicable).

AW Proper EPA SW-846 analytical methods were used for analysis.

5.0 DATA REPORTING

AW All analytical reporting associated with the event was performed by the contracted lab.
AW Trip, field and/or equipment, and laboratory blank results have all been reported. All detects for blanks are listed below by constituent. All laboratory method blanks, if
any, have been ‘flagged’ with a ‘B’ where detected in other samples as appropriate
and a laboratory narrative was provided. If the sample was flagged by the laboratory and is not within 5X of the concentration in the blank (or 10X for commonly detected laboratory contaminants-acetone, methylene chloride and phthalates), list below with
explanation if flags should be removed. If flags need to be added for samples, also list below.

 Field Blank
o Copper – Total @ 4.36 ug/L (J)
o Manganese – Total @ 1.90 ug/L (J)
 Method Blank
o Barium @ 1.74 ug/L (J)
o Manganese @ 1.85 ug/L (J)
 B flag added to:
o MW2T - Copper @ 4.74 ug/L (J)
o MW3 - Copper @ 5.28 ug/L (J)
o MW4 - Copper @ 3.17 ug/L (J)
o MW5 - Copper @ 5.01 ug/L (J)
o MW6T - Copper @ 5.48 ug/L (J)
o MW10 - Copper @ 3.12 ug/L (J)
o MW11 - Copper @ 4.60 ug/L (J)
o MW14 - Copper @ 3.22 ug/L (J)
o SW2 - Copper @ 9.51 ug/L (J)
o SW3 - Copper @ 7.73 ug/L (J)
AW It is clear from the laboratory report that samples have or have not been diluted during analysis, and if the samples have been diluted, the result is reported as a multiple of the dilution (e.g., a sample diluted 10x resulting in an analytical detection
of 1.0 should be reported as 10). Those that have been diluted are listed below with the dilution factor.
 MW2T- (Total Alkalinity x3)
 MW3 (Chloride x20, Total Alk. x3)
 MW5 (Sulfate x2)
 MW6T (Chloride x25, Total Alk. X5)
 MW10 (Chloride x5, Total Alk. X4)
 MW11 (Total Alk. X3)
 MW14 (Total Alk. X2)
GOLDER ASSOCIATES INC.
QUALITY ASSURANCE & QUALITY CONTROL
LABORATORY DATA REVIEW
Page 4 of 5

AW The report provides the reporting limit for each constituent.
AW The results were reported at or below their proper reporting limits (e.g., NC Solid Waste Section approved PQLs). Those that are not reported correctly are listed
below (by constituent) with the proper reporting limit listed beside them. State if the reporting limit error is due to dilutions.

 Manganese (NC SWSL = 50 ug/L)
o MW2T @ 127 ug/L
o MW5 @ 848 ug/L
o MW6T @ 1,780 ug/L
o MW10 @ 1,130 ug/L
o MW11 @ 50.4 ug/L
 Barium (NC SWSL = 100 ug/L)
o MW3 @ 2,150 ug/L
o MW6T @ 2,440 ug/L
o MW10 @ 1,170 ug/L
o SW2 @ 145 ug/L
o SW3 @ 145 ug/L

 Nickel (NC SWSL = 50 ug/L)
o MW3 @ 52.4 ug/L
 Iron (NC SWSL = 300 ug/L)
o MW4 @ 1,900 ug/L
o MW6T @ 1,100 ug/L

 Lead (NC SWSL = 10 ug/L)
o SW2 @ 10.5 ug/L
o SW3 @ 14.7 ug/L

 Zinc (NC SWSL = 10 ug/L
o SW2 @ 13.9 ug/L

 Arsenic (NC SWSL = 10 ug/L)
o SW3 @ 10.5 ug/L

AW No inorganic or organic constituents were reported above their respective NC 2L Drinking Water Standards or SWS Groundwater Protection Standards in wells or
field/equipment/trip blanks, or above applicable surface water standards in surface
water monitoring points.

 Barium (NC 2L = 700 ug/L) (MCL = 2000 ug/L)
o MW3 @ 2150 ug/L
o MW6T @ 2440 ug/L
o MW10 @ 1170 ug/L
 Cobalt (SWS GPS = 1 ug/L)
o MW5 @ 1.3 ug/L (J)
 Vanadium (SWS GPS = 0.3 ug/L)
o MW3 @ 19.3 ug/L (J)
o MW4 @ 3.59 ug/L
o MW-14 @ 8.50 ug/L (J)

 Iron (NC 2L & MCL = 300 ug/L)
o MW4 @ 1900 ug/L
o MW6T @ 1100 ug

 Manganese (NC 2L & MCL = 50 ug/L)
o MW2T @ 127 ug/L
o MW5 @ 848 ug/L
o MW6T @ 1,780 ug/L
o MW-10 @ 1330 ug/L
o MW-11 @ 50.4 ug/L

 Chloride (NC 2L & MCL = 250 mg/L)
o MW2T @ 520 mg/L
o MW-3 @ 1800 mg/L
o MW5 @ 1100 mg/L
o MW6T @ 2400 mg/L (D)
o MW10 @ 410 mg/L (D)
o MW14 @ 30 mg/L

 TDS (NC 2L = 1000 mg/L)
o MW2T @ 1200 mg/L
o MW3 @ 3600 mg/L
o MW5 @ 2400 mg/L
o MW6T @ 4900 mg/L
 Arsenic (2B SWS = 10 ug/L)
o SW3 @ 10.5 ug/L

 Lead (2B SWS = 0.54 ug/L)
o SW2 @ 10.5 ug/L
o SW3 @ 14.7 ug/L
GOLDER ASSOCIATES INC.
QUALITY ASSURANCE & QUALITY CONTROL
LABORATORY DATA REVIEW
Page 5 of 5

 Nickel (NC 2L = 100 ug/L, MCL = 50 ug/L)
o MW3 @ 52.4 ug/L
o MW11 @ 50.4 ug/L
 Chromium (NC 2L & MCL = 10 ug/L)
o MW3 @ 22.3 ug/L AW No inorganic or organic constituents were detected in a well or surface water point at
quantifiable concentrations outside of their historical range (more than 5X previous
concentrations or first-time detections).
AW Other report issues/Communications with laboratory/etc.:

APPENDIX C
STATISTICAL EVALUATION WORKSHEETS & SUMMARY TABLE
Caption Text
December 2016 1 of 1 0739-603516.100
G:\PROJECTS\Waste Industries\Red Rock\Groundwater\GWMR\Sept 2016\Stats\Stats_Summary_Sep 2016.xlsx
MW-2T MW-4 MW-5 MW-6T MW-11 MW-14
Interwell Nonparametric Prediction Interval 10.0
MW-6T Intrawell Nonparametric Prediction Interval 17.0
Interwell Upper Prediction Interval 2228
MW-6T Intrawell Upper Tolerance Interval 3275
Interwell Nonparametric Prediction Interval 457
MW-4 Intrawell Upper Tolerance Interval 17533
MW-6T Intrawell Upper Tolerance Interval 2222
Manganese ug/L Interwell Upper Prediction Interval 2078 127 29.1 J 848 1780 50.4 18.0 J
Interwell Upper Prediction Interval 866
MW-3 Intrawell Upper Tolerance Interval 2017
MW-5 Intrawell Upper Tolerance Interval 2003
MW-6T Intrawell Upper Tolerance Interval 2516
Interwell Upper Prediction Interval 1433
MW-3 Intrawell Upper Tolerance Interval 3791
MW-5 Intrawell Upper Tolerance Interval 4149
MW-6T Intrawell Upper Tolerance Interval 5383
Notes:1. Shaded values represent apparent statistically significant increases (SSIs) over background concentrations.
2. Statistical worksheets are provided as Appendix C.
3. ug/L = micrograms per liter
4. ND = Not Detected
5. J = estimated concentration below the Solid Waste Section Limit
ND 11.5 ND 9.16 JArsenicug/L ND 8.90 J ND
Summary of Statistical Analysis
Red Rock Disposal. LLC C&D Landfill, Permit No. 92-28
Wake County, North Carolina
Detected Monitoring
Constituent/Analytes Statistical Evaluation Method
Reporting
Units Prediction Interval
September 2016
Downgradient Monitoring Wells and Concentrations
MW-3
16.2 J 66.1 J88.8 JBariumug/L 35.0 J 31.7 J 24402150
135 J 121 Jug/L 251 J 1900 110 J153 J 1100Iron
13.8 J
1800
3600 2400 4900 320 310
Cloride ug/L 520 5.7 1100 2400 11.0 30.0
Total Dissolved Solids ug/L 1200 100

Golder Associates NC, Inc.
5B Oak Branch Drive
Greensboro, NC 27407 USA
[phone] - Phone
[phone] - Fax