SW_F_9228-CDLF-2001_06-19-2015_RM_GW.pdf

FIRST SEMI-ANNUAL 2015
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 USA

June 2015 0739-603515.100
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June 19, 2015 0739-603515.100
Ms. Jaclynne Drummond
North Carolina Department of Environment & Natural Resources Division of Waste Management - Solid Waste Section
2090 US Highway 70 Swannanoa, NC 28778
828-296-4706
RE: WATER QUALITY MONITORING REPORT, FIRST SEMI-ANNUAL 2015 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 March 31, 2015, 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 (barium and vanadium) 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 March 2015 monitoring event. Statistical analyses were performed to determine the source of the above-standard exceedances.
The concentrations of barium in samples from MW-3 and MW-6T were determined to be statistically significant increases (SSIs) over background.
To further evaluate the SSIs, samples from MW-3 and MW-6T were analyzed for dissolved barium. The dissolved barium concentrations for the samples from MW-3 and MW-6T were below the statistically
determined background concentrations. These data support that the barium concentrations are biased high due to entrained sediment in the samples. Moreover, sample results from background well MW-10
show a similar increasing trend in barium concentrations that are seen in MW-3 and MW-6T, which supports that increasing barium may be naturally occurring. Additionally, the absence of leachate
indicators (i.e., detections of volatile organic constituents or trend for field parameter indicators) for samples from wells MW-3 and MW-6T do not support a leachate release from the facility. Therefore,
future barium results will continue to be monitored and no further action is warranted at this time.
Cobalt, thallium, 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. No further action is needed as concentrations are estimated.
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 iron and manganese to evaluate the source of their exceedances. 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.
No NC Appendix I organic constituents were detected above SWSLs in samples from downgradient
monitoring wells during the March 2015 monitoring event. Additionally, no NC Appendix I constituents

Golder Associates NC, Inc. 5B Oak Branch Drive Greensboro, NC. 27407 USA Tel: [phone] Fax: [phone] www.golder.com
Golder Associates: Operations in Africa, Asia, Australasia, Europe, North America and South America
June 2015 i 0739-603515.100

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 March 2015 Monitoring Event ....................................................................................................... 4
2.4 Laboratory Analysis Program ........................................................................................................ 5
2.5 March 2015 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, March 31, 2015
List of Appendices
Appendix A Groundwater and Surface Water Sampling Logs
Appendix B March 2015 Groundwater Certificates-of-Analysis, Chain-of-Custody Forms and Laboratory Data Reviews
Appendix C Statistical Evaluation Worksheets and Summary Table

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1.0 INTRODUCTION
This report summarizes the monitoring results from the March 31, 2015, 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 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.

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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 March 2015 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

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bedrock (GNR 2003). The groundwater contour map and interpreted flow directions are consistent with
previously submitted interpretations for this facility.
Based on the March 2015 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 242 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 March 2015 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 March 2015 compliance monitoring
event, no physical indicators of a potential release were observed in the waste management areas by the
sampling personnel.

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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 March 2015 Monitoring Event
Personnel from Golder visited the facility on March 31, 2015, 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

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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 March 31, 2015, 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 April 1, 2015, in good condition and properly preserved.
2.5 March 2015 Sampling Results
Analytical results and field parameters for the March 2015 groundwater samples are summarized in
Tables 4 and 5 with available historical data. Historical results and field parameters for surface water

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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, four NC Appendix I inorganic constituents (barium, lead, vanadium, and zinc) were
detected at concentrations above their respective Solid Waste Section Limits (SWSLs) in samples from
one or more downgradient monitoring wells during the March 2015 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. 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.
Zinc was detected at a concentration above its respective SWSL in the sample from SW-2 during the
event, as it has been during previous events. No other NC Appendix I constituents were detected above
their respective SWSLs in surface water samples during the March 2015 event.
3.0 LABORATORY AND FIELD QA/QC
A field blank was collected by Golder personnel as part of the March 2015 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. Based on Golder’s
review, no data qualification was necessary.
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, three NC Appendix I inorganic constituents were detected in samples from one or more
downgradient wells at concentrations that exceeded applicable groundwater standards during the March
2015 event. Barium was detected in the samples from MW-3 and MW-6T at concentrations above the
SWSL and NC 2L Standard and vanadium was detected in the sample from MW-3 above the SWSL and
the Solid Waste Section (SWS) Groundwater Protection Standard (GPS) during this event. The
vanadium concentration was similar to recent sampling events and was interpreted to represent
background conditions as described below. The barium concentrations were higher than historical
concentrations; therefore, dissolved barium was analyzed for samples from MW-3 and MW-6T. The
dissolved barium concentrations were consistent with previous sampling results.

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Cobalt was detected at an estimated concentration below the SWSL, but above its GPS in the sample
from MW-5. Thallium was detected at an estimated concentration below the SWSL, but above its GPS in
the sample from MW-2T. Vanadium was also detected at estimated concentrations below the SWSL, but
above the GPS in the samples from MW-4 and MW-14. No further action is needed as concentrations of
cobalt, thallium, and vanadium are estimated.
As presented in Table 4, four indicator parameters (chloride, iron, manganese, and total dissolved solids)
were detected at concentrations above their respective NC 2L Standards during this event in samples
from one or more downgradient wells. 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. As presented in Table 6, no NC Appendix I constituents were detected
above applicable surface water standards in surface water monitoring points during the March 2015
sampling event.
4.2 Statistical Evaluations
As presented above, two NC Appendix I inorganic constituents (barium and vanadium) 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 barium in samples from MW-3 and MW-6T were
determined to be statistically significant. Dissolved barium was analyzed for samples from MW-3 and
MW-6T. The dissolved barium concentrations for the samples from MW-3 and MW-6T were below the
statistically determined background concentration. These data support that the barium concentrations for
these samples may be biased high due to entrained sediment. Moreover, sample results from
background well MW-10 show a similar increasing trend in barium concentrations that are seen in MW-3
and MW-6T, which supports that the increasing barium may be naturally occurring. Additionally, the
absence of leachate indicators (i.e., detections of volatile organic constituents or trend for field parameter
indicators) for samples from wells MW-3 and MW-6T do not support a leachate release from the facility.
Therefore, future barium results will continue to be monitored and no further action is warranted at this
time.
Indicator parameters, iron and manganese, were detected above the SWSLs and respective groundwater
standards in samples from one or more downgradient monitoring wells during this sampling event. The
concentrations were statistically compared to background concentrations and based on the statistical
evaluation were determined to be representative of background concentrations.

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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
September 2015.
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.
USGS (Heath, Ralph C.), Basic Ground-Water Hydrology, Water Supply Paper 2220, for U.S. Department of Interior and U.S.G.S., 1983.
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TABLES

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G:\Projects\Waste Industries\Red Rock\Groundwater\GWMR\March 2015\Tables\Red Rock Tables March 2015.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 NI2/13/2001 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 NI4/26/2001 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 NI6/11/2002 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 NI3/6/2003 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 10.179/23/2003 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 11.089/27/2007 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 15.229/29-30/2008 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 14.533/30-31/2009 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 14.233/30-31/2010 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 10.729/29-30/2010 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 13.864/6-4/7/2011 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 13.759/28/2011 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 12.869/26/2012 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 14.824/1/2013 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 15.899/25/2013 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 12.654/1/2014 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 13.303/31/2015 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 11.61MEAN256.49 24.70 249.84 11.96 250.31 3.79 251.16 3.31 276.23 12.98 294.00 8.36 264.42 22.20 289.48 11.68 287.39 23.38 299.63 15.20 288.02 13.18
MAXIMUM 266.28 43.87 253.44 14.04 251.91 12.23 252.28 7.64 281.22 19.47 301.86 14.52 268.15 28.95 294.53 17.88 291.53 30.00 303.71 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 7.99 287.84 0.50 257.67 18.47 283.28 6.63 280.77 19.24 295.82 11.12 285.31 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 well6. 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).
MW-4MW-3MW-2T*MW-10**MW-8MW-7MW-6T*MW-5
314.83 301.20
MW-14MW-12MW-11
Monitoring Well
TABLE 1
Summary of Historical Groundwater Elevation DataRed Rock Disposal, LLC C&D Landfill, Permit No. 92-28
Wake County, North Carolina
302.36 286.62 301.16 310.77281.19 261.80 254.10 254.47 289.21
June 2015 Page 1 of 1 Project No. 0739603515
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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
March 2015
i1 463 0.1 333.240.0007450.0432
i2
i3
SE
SSE
SSE
1297
1970
0.0308
0.0203
237.71
156.53
0.1
0.1
0.000745
0.000745
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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
June 2015 Page 1 of 8 Project No. 0739603515
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MW-1 MW-10 MW-2T(1)MW-3 MW-4 MW-5 MW-6T(1)MW-11 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
ug/L 09/29/08 --6 --ND ND ND ND ND ND ND ND ND
ug/L 03/30/09 --6 --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
ug/L 03/30/10 --6 --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
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
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
ug/L 09/29/08 --10 --ND ND ND ND ND ND ND ND ND
ug/L 03/30/09 --10 --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 ND ND
ug/L 03/30/10 --10 --ND ND ND 3.21 J 3.04 J ND ND ND ND
ug/L 09/29/10 --10 --ND ND ND ND ND ND ND 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
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 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 61.4 J ND
ug/L 09/29/09 --100 --1100 40.1 J 1920 46.4 J 107 2180 53.8 J 97.2 J ND
ug/L 03/30/10 --100 --1120 40.4 J 1810 31.3 J 151 1880 16.0 J 86.7 J ND
ug/L 09/29/10 --100 --892 30.4 J 1770 28.4 J 103 1420 13.4 J 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 ------
Blanks
Upgradient Compliance WellsSWS
Reporting
Limit
Downgradient Compliance WellsMDL
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 DateReporting Units
June 2015 Page 2 of 8 Project No. 0739603515
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MW-1 MW-10 MW-2T(1)MW-3 MW-4 MW-5 MW-6T(1)MW-11 MW-14
Blanks
Upgradient Compliance WellsSWS
Reporting
Limit
Downgradient Compliance WellsMDL
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 DateReporting Units
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
ug/L 09/29/08 --1 --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 ND
ug/L 09/29/09 --1 --ND ND ND 0.109 B 0.437 B ND ND ND 0.133 J
ug/L 03/30/10 --1 --ND ND ND 0.137 J 0.291 J ND ND ND ND
ug/L 09/29/10 --1 --ND ND ND 0.216 J 0.640 J ND ND ND ND
ug/L 09/29/10 --1 ------------------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
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
ug/L 09/29/08 --1 --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 ND
ug/L 09/29/09 --1 --ND ND ND 0.585 J 0.658 J ND ND ND ND
ug/L 03/30/10 --1 --ND ND ND ND 0.760 J ND ND ND ND
ug/L 09/29/10 --1 --ND ND ND ND 1.07 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
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 ND ND
ug/L 09/29/08 --10 --ND ND ND ND ND ND ND ND ND
ug/L 03/30/09 --10 --ND 0.7 J ND 1.2 J ND 1.3 J 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 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 1.08 J ND
ug/L 09/29/10 --10 --ND ND 2.60 J 1.32 J 1.89 J ND ND ND ND
ug/L 09/29/10 --10 ------------------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
June 2015 Page 3 of 8 Project No. 0739603515
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MW-1 MW-10 MW-2T(1)MW-3 MW-4 MW-5 MW-6T(1)MW-11 MW-14
Blanks
Upgradient Compliance WellsSWS
Reporting
Limit
Downgradient Compliance WellsMDL
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 DateReporting Units
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 3.8 J ND
ug/L 09/29/08 --10 --ND ND ND 7.1 J 20.5 ND ND ND ND
ug/L 03/30/09 --10 --ND ND ND 1.6 J 1.1 J 0.7 J ND ND ND
ug/L 09/29/09 --10 --ND ND ND 16.1 9.24 J ND ND ND ND
ug/L 03/30/10 --10 --ND ND ND ND 2.43 J ND ND ND ND
ug/L 09/29/10 --10 --ND ND 1.15 J ND 2.12 J ND ND 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
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 0.60 J
ug/L 09/29/08 --10 --ND ND ND ND ND ND ND ND ND
ug/L 03/30/09 --10 --ND ND ND 1.24 B ND ND 1.14 B ND 1.39 J
ug/L 09/29/09 --10 --ND ND ND 3.00 J ND ND 4.19 J ND ND
ug/L 03/30/10 --10 --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 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
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 15.5 ND
ug/L 09/29/08 --10 --ND ND ND 2.3 J ND ND ND ND ND
ug/L 03/30/09 --10 --2.6 J ND ND 1.9 J 3.0 J 2.2 J ND ND ND
ug/L 09/29/09 --10 --ND ND ND 2.74 J ND ND 3.66 J ND ND
ug/L 03/30/10 --10 --ND 51.7 ND 2.95 J 2.03 J ND ND 2.70 J ND
ug/L 09/29/10 --10 --ND 35.3 ND ND ND ND ND ND ND
ug/L 09/29/10 --10 ------------------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
June 2015 Page 4 of 8 Project No. 0739603515
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MW-1 MW-10 MW-2T(1)MW-3 MW-4 MW-5 MW-6T(1)MW-11 MW-14
Blanks
Upgradient Compliance WellsSWS
Reporting
Limit
Downgradient Compliance WellsMDL
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 DateReporting Units
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
ug/L 03/30/09 --0.2 --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
ug/L 03/30/10 --0.2 --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
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
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 ND ND
ug/L 09/29/08 --50 --ND 1.9 J ND ND ND ND ND 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 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 ND ND
ug/L 03/30/10 --50 --ND 2.88 J 2.42 J ND 4.08 J 2.63 J ND ND ND
ug/L 09/29/10 --50 --ND ND 48.1 J ND 8.26 J ND 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
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
ug/L 09/29/08 --10 --ND ND ND ND ND ND ND ND ND
ug/L 03/30/09 --10 --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
ug/L 03/30/10 --10 --ND ND ND ND ND ND ND ND ND
ug/L 09/29/10 --10 --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
June 2015 Page 5 of 8 Project No. 0739603515
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MW-1 MW-10 MW-2T(1)MW-3 MW-4 MW-5 MW-6T(1)MW-11 MW-14
Blanks
Upgradient Compliance WellsSWS
Reporting
Limit
Downgradient Compliance WellsMDL
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 DateReporting 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
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
ug/L 09/29/09 --10 --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
ug/L 09/29/10 --10 --ND ND 2.17 J ND ND 4.10 J 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
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 0.106 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 0.062 J
ug/L 03/30/09 --5.5 --ND ND ND ND ND ND ND ND ND
ug/L 09/29/09 --5.5 --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
ug/L 09/29/10 --5.5 --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
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 31.8 ND
ug/L 09/29/08 --25 --ND ND 24.6 J ND ND ND ND 8.1 J ND
ug/L 03/30/09 --25 --ND 2.3 J 41.3 3.4 J ND ND 0.8 J 9.5 J ND
ug/L 09/29/09 --25 --ND ND 35.1 4.94 J ND ND 5.71 J 12.9 J ND
ug/L 03/30/10 --25 --ND ND 30.3 3.60 J ND ND ND 11.5 J ND
ug/L 09/29/10 --25 --ND ND 23.3 J 4.85 J 2.47 J ND ND 9.73 J ND
ug/L 09/29/10 --25 ------------------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
June 2015 Page 6 of 8 Project No. 0739603515
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MW-1 MW-10 MW-2T(1)MW-3 MW-4 MW-5 MW-6T(1)MW-11 MW-14
Blanks
Upgradient Compliance WellsSWS
Reporting
Limit
Downgradient Compliance WellsMDL
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 DateReporting Units
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 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 ND ND
ug/L 03/30/09 --10 --ND 3.8 J 7.0 J 9.2 J ND ND ND 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 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 13.5 ND
ug/L 09/29/10 --10 --ND 4.47 J 10.2 8.62 J 5.64 J ND ND 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
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 13200 ND
ug/L 09/29/08 --300 --144 J 267 J ND 8780 5390 480 575 141 J ND
ug/L 03/30/09 --300 --141 J 107 J ND 2240 150 J 1030 574 ND ND
ug/L 09/29/09 --300 --457 247 J 156 J 7100 1750 1510 2400 1230 23.4 J
ug/L 03/30/10 --300 --79.7 J 644 104 J 2250 200 J 959 170 J 745 ND
ug/L 09/29/10 --300 --23.0 J 196 J 220 J 2210 175 J 590 115 J 80.1 J ND
ug/L 09/29/10 --300 ------------------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
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 1620 ND
ug/L 09/29/08 --50 --1050 146 ND 1390 1920 1170 125 58.1 ND
ug/L 03/30/09 --50 --215 115 ND 239 116 1640 108 3.6 J ND
ug/L 09/29/09 --50 --1130 185 6.27 J 2270 1350 1860 180 121 ND
ug/L 03/30/10 --50 --144 197 4.01 J 39.4 J 237 1430 74.2 229 ND
ug/L 09/29/10 --50 --913 94.2 22.3 J 108 429 1090 72.9 29.5 J 1.12 J
ug/L 09/29/10 --50 ----------------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
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
ug/L 09/29/08 --100 --2.7 B 2.8 B ND ND ND 4.4 B ND ND 3.5 J
ug/L 03/30/09 --100 --ND ND ND ND ND ND 4.2 J ND ND
ug/L 09/29/09 --100 --ND ND ND ND ND ND ND ND ND
ug/L 03/30/10 --100 --ND ND ND ND ND ND ND ND ND
ug/L 09/29/10 --100 --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
Chloroform ug/L 03/21/07 --5 --ND ND ND ND ND ND ----ND
NC2L = 70 ug/L ug/L 09/27/07 --5 --ND ND ND ND ND ND ----ND
EPA MCL = 80 ug/L ug/L 03/25/08 --5 --ND ND ND ND ND ND ----ND
ug/L 09/29/08 --5 --ND ND ND ND ND ND ND ND ND
ug/L 03/30/09 --5 --ND ND ND ND ND ND ND ND ND
ug/L 09/29/09 --5 --ND ND ND ND ND ND ND ND ND
ug/L 03/30/10 --5 --ND ND ND ND ND ND ND ND ND
ug/L 09/29/10 --5 --ND ND ND ND ND ND ND ND ND
ug/L 04/06/11 --5 --ND ND ND ND ND ND ND ND ND
ug/L 09/28/11 --5 --ND ND ND ND ND ND ND ND ND
ug/L 03/28/12 --5 --ND ND ND ND ND ND ND ND ND
ug/L 09/26/12 --5 --ND ND ND ND ND ND ND ND ND
ug/L 04/01/13 --5 --ND ND ND ND ND ND ND ND ND
ug/L 09/25/13 --5 --ND ND ND ND ND ND ND ND ND
ug/L 04/01/14 --5 --ND ND ND ND ND ND ND ND ND
ug/L 09/29/14 0.18 5 --ND ND ND ND ND ND ND ND ND
ug/L 03/31/15 0.18 5 --ND ND ND ND ND ND ND ND ND
June 2015 Page 7 of 8 Project No. 0739603515
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MW-1 MW-10 MW-2T(1)MW-3 MW-4 MW-5 MW-6T(1)MW-11 MW-14
Blanks
Upgradient Compliance WellsSWS
Reporting
Limit
Downgradient Compliance WellsMDL
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 DateReporting Units
Chloromethane ug/L 03/21/07 --1 --ND ND ND ND ND ND ----ND
NC 2L = 3 ug/L ug/L 09/27/07 --1 --ND ND ND ND ND ND ----ND
No EPA MCL 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
ug/L 03/30/09 --1 --ND ND ND ND ND ND ND ND ND
ug/L 09/29/09 --1 --ND ND ND ND ND ND ND ND ND
ug/L 03/30/10 --1 --ND ND ND ND ND ND ND ND ND
ug/L 09/29/10 --1 --0.58 B ND ND ND ND 0.57 B ND ND 0.44 J
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 0.13 1 --ND ND ND ND ND ND ND ND ND
ug/L 03/31/15 0.13 1 --ND ND ND ND ND 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
ug/L 03/30/09 --1 --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 0.45 J ND
ug/L 03/30/10 --1 --ND ND ND ND ND ND ND ND ND
ug/L 09/29/10 --1 --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
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
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 18 ND
mg/L 09/29/08 ------320 530 1700 4.0 J 170 1700 11 20 ND
mg/L 03/30/09 ------ND 460 1600 6.5 400 1800 9.4 16 ND
mg/L 09/29/09 ------330 490 1500 7.1 390 1900 10 21 ND
mg/L 03/30/10 ------480 510 1600 6.4 960 1900 11 21 ND
mg/L 09/29/10 ------310 450 1600 7.3 360 1900 11 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
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 510 340 ND
mg/L 09/29/08 ------850 1300 3400 100 450 3500 380 330 ND
mg/L 03/30/09 ------910 1200 3300 90 930 3700 290 260 ND
mg/L 09/29/09 ------930 1300 3300 150 930 3900 360 340 ND
mg/L 03/30/10 ------1200 1300 3500 160 2100 4000 350 320 ND
mg/L 09/29/10 ------850 1300 3500 140 920 4000 340 330 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
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 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 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 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 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 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 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
ug/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
June 2015 Page 8 of 8 Project No. 0739603515
G:\Projects\Waste Industries\Red Rock\Groundwater\GWMR\March 2015\Tables\Red Rock Tables March 2015.xlsx
MW-1 MW-10 MW-2T(1)MW-3 MW-4 MW-5 MW-6T(1)MW-11 MW-14
Blanks
Upgradient Compliance WellsSWS
Reporting
Limit
Downgradient Compliance WellsMDL
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 DateReporting Units
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 86 210 240 130 ND
mg/L 09/29/08 ------140 240 230 40 25 220 240 130 ND
mg/L 03/30/09 ------220 230 220 41 120 220 200 110 ND
mg/L 09/29/09 ------160 210 220 38 57 230 200 110 ND
mg/L 03/30/10 ------290 210 220 32 140 220 210 110 ND
mg/L 09/29/10 ------250 310 330 37 34 330 300 220 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
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.
8) The following dilutions were noted for the April 2015 event: Chloride at 10X (MW-2T, MW-10),and 40X (MW-3, MW-6T); Total Alkalinity at 5X (MW-2T, MW-3, MW-6T, MW-10, and MW-11) at 2X (MW-14).
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.
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.
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MW-1 MW-10 MW-2T MW-3 MW-4 MW-5 MW-6T MW-11 MW-14pH (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 6.77S.U.03/30/09 --6.57 7.38 7.03 5.74 6.51 6.93 7.25 7.02S.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 6.61S.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 6.83S.U.09/28/11 --6.65 7.19 6.98 5.38 6.45 7.02 7.35 7.07S.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 7.07S.U.09/25/13 --6.75 7.23 6.95 5.61 6.51 6.85 7.56 7.05S.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 6.57S.U.03/31/15 --6.64 7.32 7.04 6.01 6.37 6.86 7.77 7.02
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 552uS/cm 09/29/08 --1700 2380 5450 129 920 5590 556 462
uS/cm 03/30/09 --1950 2301 5369 146 1826 6126 557 473uS/cm 09/29/09 --1760 1989 4445 132 1451 6767 490 432uS/cm 03/30/10 --2284 2407 5599 122 3649 6633 580 531
uS/cm 09/29/10 --1666 2227 5229 142 1761 6238 607 564uS/cm 04/06/11 --1696 2392 5602 115 2763 6716 580 533
uS/cm 09/28/11 --2020 2401 5404 101 4829 6644 564 538uS/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 498uS/cm 04/01/13 --1669 2031 4624 87 2463 5981 498 492
uS/cm 09/25/13 --2030 2460 5630 114 5590 7400 590 600uS/cm 04/01/14 --2273 2535 6014 142 5334 7594 668 86uS/cm 09/29/14 --2102 2484 5776 190 5904 7507 648 623
uS/cm 03/31/15 --1931 2311 5462 117 2560 6890 553 552TemperatureCelsius10/31/01 ------------------
(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 19.91Celsius03/30/09 --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 18.08Celsius03/30/10 --16.46 15.89 14.05 14.70 13.32 18.05 14.24 16.38Celsius09/29/10 --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 15.40Celsius09/28/11 --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 15.62Celsius09/25/13 --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 16.4Celsius09/29/14 --17.5 18.6 17.3 18.3 18.3 18.7 17.9 17.3Celsius03/31/15 --12.8 17.0 13.9 12.7 11.38 15.9 16.2 14.1
Detected Monitoring
Constituents/Parameters
Reporting
Units
Sample
Date
TABLE 5
Summary of Field Parameters from Monitoring WellsRed Rock Disposal, LLC C&D Landfill, Permit No. 92-28Wake County, North Carolina
Upgradient Downgradient Compliance Wells
June 2015 Page 2 of 2 Project No. 0739603515
G:\Projects\Waste Industries\Red Rock\Groundwater\GWMR\March 2015\Tables\Red Rock Tables March 2015.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 WellsRed Rock Disposal, LLC C&D Landfill, Permit No. 92-28Wake 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 >1000NTU09/29/08 --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 1.20NTU09/29/09 --36.5 14.4 32.7 98.1 20.1 57.2 139 92.0NTU03/30/10 --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 2.20NTU04/06/11 --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 6.99NTU03/28/12 --7.99 4.66 4.63 15.1 0.88 1.71 1.26 1.75NTU05/23/12 ----------10.2 ------
NTU 09/26/12 --1.25 1.92 20.8 16.0 6.18 2.03 3.04 1.63NTU04/01/13 --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 3.81NTU04/01/14 --1.79 2.04 5.19 17.5 1.42 0.98 2.24 1.99NTU09/29/14 --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 0.63ORP (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 94.4mV09/29/09 --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 64.2mV09/29/10 --83 -33.8 -323.1 -335.1 -288.3 -38.8 -48.4 49.5mV04/06/11 --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 15.6mV03/28/12 --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 -29.7mV04/01/13 --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 74.5mV04/01/14 --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 88.3mV03/31/15 --135.8 -16.6 89.9 101.2 103.9 39.1 93.1 95.5Dissolved 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 4.45mg/L 03/30/09 --0.71 1.22 4.89 2.79 2.60 0.59 0.56 4.09mg/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 4.03mg/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 4.37mg/L 09/28/11 --2.08 0.67 1.52 0.86 2.13 4.38 1.12 3.09mg/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 3.66mg/L 09/25/13 --0.68 0.28 1.57 0.71 0.86 0.83 0.26 2.82mg/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 4.66mg/L 03/31/15 --2.01 0.96 3.62 4.45 3.50 2.30 2.72 3.55
Notes:S.U. =Standard UnitsNTU =Nephelometric Turbidity Units
uS/cm =microsiemens per centimeter
mg/L =milligrams per liter
mV =Millivolts
-- =no data1) 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.
June 2015 Page 1 of 8 Project No. 0739603515
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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
Arsenic ug/L 06/11/02 --10 ND ND ND
SW Standard = 50 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
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
June 2015 Page 2 of 8 Project No. 0739603515
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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
No SW Standard 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
Beryllium ug/L 03/21/07 --1 ND ND ND
SW Standard = 6.5 ug/L ug/L 09/28/07 ----Dry Dry --
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
June 2015 Page 3 of 8 Project No. 0739603515
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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
SW Standard = 2 ug/L*ug/L 11/01/02 --1 ND ND ND
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
Chromium ug/L 06/11/02 --10 234 ND ND
SW Standard = 50 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 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
June 2015 Page 4 of 8 Project No. 0739603515
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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
Copper ug/L 03/21/07 --10 ND ND 0.60 J
SW Standard = 7 ug/L*ug/L 09/28/07 ----Dry Dry --
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
June 2015 Page 5 of 8 Project No. 0739603515
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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
SW Standard = 25 ug/L*ug/L 11/01/02 --10 11 ND ND
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
Nickel ug/L 03/21/07 --50 ND ND ND
SW Standard = 88 ug/L*ug/L 09/28/07 ----Dry Dry --
ug/L 03/26/08 --50 ND ND ND
ug/L 09/29/08 --50 1.8 J ND NDug/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
June 2015 Page 6 of 8 Project No. 0739603515
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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
Silver ug/L 06/11/02 --10 ND ND ND
SW Standard = 0.06 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 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
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 Jug/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
June 2015 Page 7 of 8 Project No. 0739603515
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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
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
Zinc ug/L 03/21/07 --10 4.9 B 8.4 J 1.1 J
SW Standard = 50 ug/L*ug/L 09/28/07 ----Dry Dry --
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 NDug/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
Acetone ug/L 03/21/07 --100 ND ND ND
SW Standard = 2000 ug/L 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
June 2015 Page 8 of 8 Project No. 0739603515
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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
2-Butanone ug/L 03/21/07 --100 ND ND ND
SW Standard = 160,000 ug/L 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
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
SW Standard =Surface Water Standard based on Class C Freshwater Aquatic Life Classification
Bolded =Concentrations above applicable 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)Surface Water Standards based on Class C Freshwater Aquatic Life classification
for the Jim Branch in the Cape Fear basin per 15A NCAC 2B.
*SW Standards for Cd, Pb, and Ni are Narrative Standards per 2B .0211
*SW Standards for Cu, Ag, and Zn are Action Level Standards per 2B .0211
SWS Reporting Limit =NCPQL or lab-specific reporting limit prior to 2007 and NCSWSL starting on 01/18/07
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SW-2 SW-3
pH (field)S.U.06/11/02 7.70 6.50S.U.11/01/02 6.10 7.00
S.U.03/06/03 6.00 5.80
S.U.09/23/03 5.20 5.10S.U.03/11/04 6.30 6.40
S.U.09/23/04 6.70 6.80
S.U.03/10/05 6.60 7.20S.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 6.68S.U.09/30/09 Dry Dry
S.U.03/30/10 7.63 6.17
S.U.09/29/10 10.68 10.78S.U.04/06/11 7.68 5.68
S.U.09/28/11 7.98 6.37
S.U.03/28/12 7.46 6.40S.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 DryS.U.03/31/15 7.86 6.88
Specific Conductance uS/cm 06/11/02 140 120
(lab prior to 9/19/06 event)uS/cm 11/01/02 105 155uS/cm 03/06/03 82 90
uS/cm 09/23/03 116 128
uS/cm 03/11/04 16 114uS/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 195uS/cm 09/29/08 261 190
uS/cm 03/30/09 585 127
uS/cm 09/30/09 Dry DryuS/cm 03/30/10 235 222
uS/cm 09/29/10 70 85
uS/cm 04/06/11 478 219uS/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 291uS/cm 04/01/14 232 269
uS/cm 09/29/14 1864 Dry
uS/cm 03/31/15 246 223
Downstream
TABLE 7
Summary of Field Parameters from Surface Water Monitoring PointsRed Rock Disposal, LLC C&D Landfill, Permit No. 92-28
Wake County, North Carolina
Detected Monitoring Constituent/Parameter Reporting
Units
Sample
Date
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SW-2 SW-3
Downstream
TABLE 7
Summary of Field Parameters from Surface Water Monitoring PointsRed 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 21.0Celsius03/11/04 8.0 8.0
Celsius 09/23/04 20.0 18.0
Celsius 03/10/05 7.0 6.0Celsius09/22/05 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 11.04Celsius09/30/09 Dry Dry
Celsius 03/30/10 14.44 17.35
Celsius 09/29/10 21.30 21.41Celsius04/06/11 13.61 9.56
Celsius 09/28/11 22.77 24.10
Celsius 03/28/12 15.66 21.20Celsius09/26/12 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 DryCelsius03/31/15 9.30 16.2
Turbidity (field)NTU 03/21/07 146 183
NTU 09/28/07 Dry DryNTU03/26/08 >1000 446
NTU 09/29/08 151 22.7
NTU 03/30/09 407 57.7NTU09/30/09 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 56.0NTU09/25/13 47.7 66.3
NTU 04/01/14 624 129
NTU 09/29/14 83.2 DryNTU03/31/15 118 34.3
Oxidation Reduction Potential mV 03/21/07 67 114
(field)mV 09/28/07 Dry DrymV03/26/08 118.7 132.8
mV 09/29/08 76 29
mV 03/30/09 53.4 81.6
mV 09/30/09 Dry Dry
mV 03/30/10 74.8 115.3mV09/29/10 -368.9 -356.4
mV 04/06/11 87.0 150.2
mV 09/28/11 43.7 102mV03/28/12 28.3 58.1
mV 09/26/12 -49.0 Dry
mV 04/01/13 -17.4 48.4mV09/25/13 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
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G:\Projects\Waste Industries\Red Rock\Groundwater\GWMR\March 2015\Tables\Red Rock Tables March 2015.xlsx
SW-2 SW-3
Downstream
TABLE 7
Summary of Field Parameters from Surface Water Monitoring PointsRed Rock Disposal, LLC C&D Landfill, Permit No. 92-28
Wake County, North Carolina
Detected Monitoring Constituent/Parameter Reporting
Units
Sample
Date
Dissolved Oxygen (field)mg/L 03/21/07 10.3 9.9mg/L 09/28/07 Dry Dry
mg/L 03/26/08 10.36 5.16
mg/L 09/29/08 9.09 6.79mg/L 03/30/09 7.98 10.30
mg/L 09/30/09 Dry Dry
mg/L 03/30/10 8.93 9.71mg/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 7.86mg/L 09/29/14 1.84 Dry
mg/L 03/31/15 9.93 11.41
Notes:S.U. =Standard Units
NTU =Nephelometric Turbidity Units
uS/cm =microsiemens per centimeter
mg/L =milligramer per liter
mV =Millivolts
-- =no data
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
occurring prior to March 2008 sampling event, no upstream surface monitoring point is available to
sample.

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PHASE
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2015-05-28
LKB
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RED ROCK DISPOSAL, LLC CONSTRUCTION
DEMOLITION LANDFILL, PERMIT NO. 92-28
WAKE COUNTY, NC
WASTE INDUSTRIES USA INC.
GROUNDWATER CONTOUR MAP
MARCH 31, 2015
SITE LOCATION
SITE LOCATION MAP
(DRAWING IS NOT TO SCALE)
LEGEND
NOTES
250
1. TOPOGRAPHIC CONTOUR INTERVAL = 2 FEET
2. GROUNDWATER SURFACE CONTOUR INTERVAL = 10 FEET
3. GROUNDWATER ELEVATIONS MEASURED ON MARCH 31, 2015.
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

APPENDIX B
MARCH 2015 GROUNDWATER AND SURFACE WATER CERTIFICATES-OF-ANALYSIS,
CHAIN-OF-CUSTODY FORMS AND LABORATORY DATA REVIEWS

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GOLDER ASSOCIATES INC. QUALITY ASSURANCE & QUALITY CONTROL
LABORATORY DATA REVIEW
Page 1 of 4
Project Name: Waste Industries – Red Rock C&D Landfill
Project Reference Number: 0739603515.100
Sampling Event Date: March 31, 2015
Review Date: April 22, 2015 Initials: JD
Report #: C503561
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

JD COC was properly signed by all parties.
JD Correct project name and number are on the form.
JD Sample receipt condition at laboratory was acceptable.
JD 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 4
2.0 SAMPLE HOLDING TIMES

JD 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 JD Laboratory analyzed at least one internal blank for each method, where applicable.
JD Laboratory blank is interference-free.

JD Surrogate recoveries are provided for each analytical method, where applicable.
JD Surrogate recoveries for each method are within the acceptable limits (i.e., at least 50% of the surrogates were within range).

JD MS/MSD/LCS data results are provided for each analytical method.
JD 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 trichloroethene was outside control limits for the 8260B MSD. The QC batch was approved based on acceptable LCS recovery of this analyte.

• The spike recoveries of mercury and thallium were outside control limits for the MS, MSD, and/or post spike samples. The QC batches were approved based on acceptable LCS
recovery of these elements.
• The spike recovery of chloride and sulfate were outside control limits for the MS and MSD. The QC batches were approved based on acceptable LCS recovery.

GOLDER ASSOCIATES INC. QUALITY ASSURANCE & QUALITY CONTROL
LABORATORY DATA REVIEW
Page 3 of 4
4.0 ANALYTE LISTS/METHODS

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

JD Proper EPA SW-846 analytical methods were used for analysis.
5.0 DATA REPORTING

JD All analytical reporting associated with the event was performed by the contracted lab.

JD 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.

JD 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.

• Total Alkalinity (5x) o MW-2T, MW-3, MW-6T, MW-10, MW-11
• Total Alkalinity (2x) o MW-14
• Chloride
o MW-2T, MW-10 (10x) o MW -3, MW-6T (40x)
JD The report provides the reporting limit for each constituent.

JD 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.
JD 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.

GOLDER ASSOCIATES INC. QUALITY ASSURANCE & QUALITY CONTROL
LABORATORY DATA REVIEW
Page 4 of 4

• Barium (NC 2L = 700 ug/L)
(MCL = 2000 ug/L)
o MW-3 @ 2380 ug/L
o MW-6T @ 2810 ug/L
o MW-10 @ 1030 ug/L
• Cobalt (SWS GPS = 1 ug/L) o MW-5 @ 1.39 ug/L (J)
• Vanadium (SWS GPS = 0.3 ug/L) o MW-3 @ 25.5 ug/L o MW-4 @ 1.50 ug/L (J) o MW-14 @ 8.77 ug/L (J)

• Iron (NC 2L & MCL = 300 ug/L) o MW-2T @ 519 ug/L o MW-3 @ 360 ug/L o MW-4 @ 770 ug/L o MW-6T @ 1200 ug/L

• Manganese (NC 2L & MCL = 50 ug/L) o MW-2T @ 210 ug/L o MW-5 @ 227 ug/L o MW-6T @ 2050 ug/L o MW-10 @ 130 ug/L
• Chloride (NC 2L & MCL = 250 mg/L) o MW-2T @ 490 mg/L o MW-5 @ 940 mg/L o MW-6T @ 2100 mg/L o MW-10 @ 460 mg/L
• TDS (NC 2L = 1000 mg/L) o MW-2T @ 1200 mg/L o MW-3 @ 3600 mg/L o MW-5 @ 2100 mg/L
o MW-6T @ 4500 mg/L
o MW-10 @ 1100 mg/L
JD 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).
JD Other report issues/Communications with laboratory/etc.:

APPENDIX C
STATISTICAL EVALUATION WORKSHEETS & SUMMARY TABLE

June 2015 1 of 1 0739-603515.100
G:\Projects\Waste Industries\Red Rock\Groundwater\GWMR\March 2015\Stats\Stats_Summary_March 2015.xlsx
MW-2T MW-4 MW-5 MW-11 MW-14
Interwell Upper Prediction Interval 1934
MW-3 Intrawell Upper Prediction Interval 2370
MW-6T Intrawell Nonparametric Prediction Interval 2540
Interwell Nonparametric Prediction Interval 25
MW-3 Intrawell Nonparametric Prediction Interval 50
Interwell Upper Prediction Interval 940
MW-6T Intrawell Nonparametric Prediction Interval 1510
Manganese ug/L Interwell Upper Prediction Interval 5616 210 11.0 J 227 9.72 J 3.97 J
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
6. * = dissolved barium concentration
ND 8.77 JVanadiumug/L ND 1.50 J25.5
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
March 2015
Downgradient Monitoring Wells and Concentrations
MW-3
16.3 J 78.0 J1432170*Barium ug/L 46.6 J 1970*24.9 J2380 2810
ND 69.3 Jug/LIron 519 770 233 J360
14.7 J
MW-6T
ND
1200
2050
ND
June 2015 1 of 13 0739-603515.100
G:\Projects\Waste Industries\Red Rock\Groundwater\GWMR\March 2015\Stats\Barium Interwell March 2015.xlsx
Project Name:WI - Red Rock
Project No:073-9603515
Date:4/23/15
Analyte:Barium Quantitation
Concentration Limit
Sample No.Sample Date Location (ug/L)(ug/L)
1 10/31/01 MW-1 909 500
2 06/11/02 MW-1 ND 500
3 11/01/02 MW-1 ND 500
4 03/06/03 MW-1 ND 500
5 09/23/03 MW-1 1046 500
6 03/11/04 MW-1 752 500
7 06/11/02 MW-10 ND 500
8 11/01/02 MW-10 ND 500
9 03/06/03 MW-10 ND 500
10 09/23/03 MW-10 ND 500
11 03/11/04 MW-10 707 500
12 09/23/04 MW-10 ND 500
13 03/10/05 MW-10 872 500
14 09/22/05 MW-10 ND 500
15 03/06/06 MW-10 590 500
16 09/19/06 MW-10 ND 500
17 03/21/07 MW-10 901 100
18 09/28/07 MW-10 488 100
19 03/25/08 MW-10 710 100
20 09/29/08 MW-10 1040 100
21 03/30/09 MW-10 999 100
22 09/29/09 MW-10 1100 100
23 03/30/10 MW-10 1120 100
24 09/29/10 MW-10 892 100
25 04/06/11 MW-10 1080 100
26 09/28/11 MW-10 1410 100
27 03/28/12 MW-10 974 100
28 09/26/12 MW-10 1350 100
29 04/01/13 MW-10 1120 100
30 09/25/13 MW-10 1180 100
31 04/01/14 MW-10 996 100
32 09/29/14 MW-10 1410 100
33 03/31/15 MW-10 1030 100
Number of Data 33
Number of Truncated Data 10
Percentage of Truncated Data 30%
1934 ug/LUpper Prediction Limit:
June 2015 2 of 13 0739-603515.100
G:\Projects\Waste Industries\Red Rock\Groundwater\GWMR\March 2015\Stats\Barium Interwell March 2015.xlsx
Project Name:WI - Red Rock
Project No:073-9603515
Date:4/23/15
Probability Plots to determine the distribution of Barium
Complete the following table where:
i = ordered value of sample, arranged from smallest to largest
X(i) = sample values arranged from smallest to largest
LN[X(i)] = Natural Log Value of sample concentrations arranged from
smallest to largest
[i/(n+1)] = Cumulative probability
n = number of samples = 23
X(i)LN[X(i)]i Rank [Rank/(n+1)]Quantiles
488 6.19 1 1 0.042 -1.73
590 6.38 2 2 0.083 -1.38
707 6.56 3 3 0.125 -1.15
710 6.57 4 4 0.167 -0.97
752 6.62 5 5 0.208 -0.81
872 6.77 6 6 0.250 -0.67
892 6.79 7 7 0.292 -0.55
901 6.80 8 8 0.333 -0.43
909 6.81 9 9 0.375 -0.32
974 6.88 10 10 0.417 -0.21
996 6.90 11 11 0.458 -0.10
999 6.91 12 12 0.500 0.00
1030 6.94 13 13 0.542 0.10
1040 6.95 14 14 0.583 0.21
1046 6.95 15 15 0.625 0.32
1080 6.98 16 16 0.667 0.43
1100 7.00 17 17 0.708 0.55
1120 7.02 18 18 0.750 0.67
1120 7.02 19 19 0.792 0.81
1180 7.07 20 20 0.833 0.97
1350 7.21 21 21 0.875 1.15
1410 7.25 22 22 0.917 1.38
1410 7.25 23 23 0.958 1.73
June 2015 3 of 13 0739-603515.100
G:\Projects\Waste Industries\Red Rock\Groundwater\GWMR\March 2015\Stats\Barium Interwell March 2015.xlsx
Project Name:WI - Red Rock
Project No:073-9603515
Date:04/23/15
Probability Plots to determine the distribution of Barium
R² = 0.97
-2.50
-2.00
-1.50
-1.00
-0.50
0.00
0.50
1.00
1.50
2.00
0 500 1000 1500
Qu
a
n
t
i
l
e

Concentration, Micrograms per Liter
Normal Probability Plot
Barium Concentrations
R² = 0.9326
-2.00
-1.50
-1.00
-0.50
0.00
0.50
1.00
1.50
2.00
6.00 6.50 7.00 7.50
Qu
a
n
t
i
l
e

Log Normal Concentrations
Log Normal Probability Plot
Barium Concentrations
June 2015 4 of 13 0739-603515.100
G:\Projects\Waste Industries\Red Rock\Groundwater\GWMR\March 2015\Stats\Barium Interwell March 2015.xlsx
Project Name:WI - Red Rock
Project No:073-9603515
Date:4/23/15
Determination of reported background value as an outlier
Analyte:Barium
Background Data Quantitation
Concentration Limit
Sample No.Sample Date Location (ug/l)(ug/l)
1 10/31/01 MW-1 909 500
2 6/11/02 MW-1 ND 500
3 11/1/02 MW-1 ND 500
4 3/6/03 MW-1 ND 500
5 9/23/03 MW-1 1046 500
6 3/11/04 MW-1 752 500
7 6/11/02 MW-10 ND 500
8 11/1/02 MW-10 ND 500
9 3/6/03 MW-10 ND 500
10 9/23/03 MW-10 ND 500
11 3/11/04 MW-10 707 500
12 9/23/04 MW-10 ND 500
13 3/10/05 MW-10 872 500
14 9/22/05 MW-10 ND 500
15 3/6/06 MW-10 590 500
16 9/19/06 MW-10 ND 500
17 3/21/07 MW-10 901 100
18 9/28/07 MW-10 488 100
19 3/25/08 MW-10 710 100
20 9/29/08 MW-10 1040 100
21 3/30/09 MW-10 999 100
22 9/29/09 MW-10 1100 100
23 3/30/10 MW-10 1120 100
24 9/29/10 MW-10 892 100
25 4/6/11 MW-10 1080 100
26 9/28/11 MW-10 1410 100
27 3/28/12 MW-10 974 100
28 9/26/12 MW-10 1350 100
29 4/1/13 MW-10 1120 100
30 9/25/13 MW-10 1180 100
31 4/1/14 MW-10 996 100
32 9/29/14 MW-10 1410 100
33 3/31/15 MW-10 1030 100
mean = 985.9
STD = 237.9
Note: All concentrations are micrograms per liter
Using the data listed above, form the statistic Tn:
Tn = (Xn - mean) / STD
where:Xn = largest observed sample value
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G:\Projects\Waste Industries\Red Rock\Groundwater\GWMR\March 2015\Stats\Barium Interwell March 2015.xlsx
mean = mean of the background values
STD = standard deviation of the background values
For Xn = 1410
mean = 985.9
STD = 237.9
Tn = 1.783
From Table 8 included in the Statistical Analysis of Groundwater Monitoring Data at
RCRA Facilities - Interim Final Guidance, the critical value for the given sample group is
Number of samples =33
Tc = 2.736
Since Tc>Tn, the sample result is not considered to be an outlier
June 2015 6 of 13 0739-603515.100
G:\Projects\Waste Industries\Red Rock\Groundwater\GWMR\March 2015\Stats\Barium Interwell March 2015.xlsx
Project Name:WI - Red Rock
Project No:073-9603515
Date:4/23/15
Shapiro Wilk Test Statistic (W) for normality of total Barium
Complete the following table where
i = ordered value of sample, arranged from smallest to largest
X(i) = sample values arranged from smallest to largest
X(n-i+1) = sample values arranged from largest to smallest
A(n-i+1) = coefficient from table A-1, Statistical Analysis of Ground-Water
Data at RCRA Facilities
B(i) = summation of (X(n-i+1)-X(i))A(n-i+1)
i X(i)X(n-i+1)X(n-i+1) - X(i)A(n-i+1)B(i)
1 488 1410 922 0.4542 418.77
2 590 1410 820 0.3126 256.33
3 707 1350 643 0.2563 164.80
4 710 1180 470 0.2139 100.53
5 752 1120 368 0.1787 65.76
6 872 1120 248 0.148 36.70
7 892 1100 208 0.1201 24.98
8 901 1080 179 0.0941 16.84
9 909 1046 137 0.0696 9.54
10 974 1040 66 0.0459 3.03
11 996 1030 34 0.0228 0.78
12 999 999 0 0.0000 0.00
13 1030 996
14 1040 974
15 1046 909
16 1080 901
17 1100 892
18 1120 872
19 1120 752
20 1180 710
21 1350 707
22 1410 590
23 1410 488
The test statistic W can be found using:
W = SQR[B/(SD x SQRT(n-1))]
where:B = summation of (X(n-i+1)-X(i))A(n-i+1)=1098.07
SD = standard deviation of the data group =237.88
n = number of samples =23
W =0.969
Compare this value to the critical value in Table A-2 of Statistical Analysisof Ground-Water
Monitoring Data at RCRA Facilities, Addendum to Interim Final Guidance (Draft)
July, 1992, to determine if the data is normally distributed.
From Table A-2 with (n) samples and a 95% confidence level, the critical value is
June 2015 7 of 13 0739-603515.100
G:\Projects\Waste Industries\Red Rock\Groundwater\GWMR\March 2015\Stats\Barium Interwell March 2015.xlsx
W(crit) = 0.914
and the calculated W = 0.969
Therefore the data set is Normal
June 2015 8 of 13 0739-603515.100
G:\Projects\Waste Industries\Red Rock\Groundwater\GWMR\March 2015\Stats\Barium Interwell March 2015.xlsx
Project Name:WI - Red Rock
Project No:073-9603515
Date:4/23/15
Aitchison's Adjustment for Barium
Background Values (positive detects only)
Concentration
Sample No.Sample Date Location (ug/l)
1 10/31/01 MW-1 909
2 6/11/02 MW-1 ND
3 11/1/02 MW-1 ND
4 3/6/03 MW-1 ND
5 9/23/03 MW-1 1046
6 3/11/04 MW-1 752
7 6/11/02 MW-10 ND
8 11/1/02 MW-10 ND
9 3/6/03 MW-10 ND
10 9/23/03 MW-10 ND
11 3/11/04 MW-10 707
12 9/23/04 MW-10 ND
13 3/10/05 MW-10 872
14 9/22/05 MW-10 ND
15 3/6/06 MW-10 590
16 9/19/06 MW-10 ND
17 3/21/07 MW-10 901
18 9/28/07 MW-10 488
19 3/25/08 MW-10 710
20 9/29/08 MW-10 1040
21 3/30/09 MW-10 999
22 9/29/09 MW-10 1100
23 3/30/10 MW-10 1120
24 9/29/10 MW-10 892
25 4/6/11 MW-10 1080
26 9/28/11 MW-10 1410
27 3/28/12 MW-10 974
28 9/26/12 MW-10 1350
29 4/1/13 MW-10 1120
30 9/25/13 MW-10 1180
31 4/1/14 MW-10 996
32 9/29/14 MW-10 1410
33 3/31/15 MW-10 1030
Mean of detected values =985.9
Standard Deviation of detected values =237.9
The adjusted mean can be found using
M(a) = (1-d/n) x M
where:d = number non- detected values =10
n = total number samples =33
M = mean detected values =985.91
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M(a)=687.15
The adjusted standard deviation squared may be found using
STD(a) = (n-(d+1)S)/n-1) + d(n-d)MM/n(n-1)
where:n = total number samples =33
d = number non-detected values =10
S = std deviation of detected values squared =56585.08
MM = mean of detected values squared =972024.53
STD(a)=250612.13
and the adjusted standard deviation is then
S(a) = SQRT(STD(a))=500.61
June 2015 10 of 13 0739-603515.100
G:\Projects\Waste Industries\Red Rock\Groundwater\GWMR\March 2015\Stats\Barium Interwell March 2015.xlsx
Project Name:WI - Red Rock
Project No:073-9603515
Date:4/23/15
Parametric Prediction Interval for Aitchison's adjusted data
Analyte:Barium
Background Data Quantitation
Concentration Limit
Sample No.Sample Date Location (ug/l)(ug/l)
1 10/31/01 MW-1 909 500
2 6/11/02 MW-1 ND 500
3 11/1/02 MW-1 ND 500
4 3/6/03 MW-1 ND 500
5 9/23/03 MW-1 1046 500
6 3/11/04 MW-1 752 500
7 6/11/02 MW-10 ND 500
8 11/1/02 MW-10 ND 500
9 3/6/03 MW-10 ND 500
10 9/23/03 MW-10 ND 500
11 3/11/04 MW-10 707 500
12 9/23/04 MW-10 ND 500
13 3/10/05 MW-10 872 500
14 9/22/05 MW-10 ND 500
15 3/6/06 MW-10 590 500
16 9/19/06 MW-10 ND 500
17 3/21/07 MW-10 901 100
18 9/28/07 MW-10 488 100
19 3/25/08 MW-10 710 100
20 9/29/08 MW-10 1040 100
21 3/30/09 MW-10 999 100
22 9/29/09 MW-10 1100 100
23 3/30/10 MW-10 1120 100
24 9/29/10 MW-10 892 100
25 4/6/11 MW-10 1080 100
26 9/28/11 MW-10 1410 100
27 3/28/12 MW-10 974 100
28 9/26/12 MW-10 1350 100
29 4/1/13 MW-10 1120 100
30 9/25/13 MW-10 1180 100
31 4/1/14 MW-10 996 100
32 9/29/14 MW-10 1410 100
33 3/31/15 MW-10 1030 100
Note: All sample concentrations are micrograms per liter
The background mean and standard deviation were modified using Aitchison's Adjustment.
The adjusted mean and standard deviation are as follows:
the adjusted mean and standard deviation are
adjusted mean = 687.2
adjusted standard deviation = 500.6
June 2015 11 of 13 0739-603515.100
G:\Projects\Waste Industries\Red Rock\Groundwater\GWMR\March 2015\Stats\Barium Interwell March 2015.xlsx
Using the background data, the upper Prediction Limit can be determined using:
Upper Prediction Limit = (Mean Conc) + t(n-1,k,.95) x (Std Dev) x SQRT(1/m+1/n)
where:Mean Conc = mean concentration background samples
t(n-1k,.95) = Bonferroni t-statistic from table 1, with
n-1 = degrees of freedom (number of samples - 1)
k = number of downgradient samples per event
.95 = confidence interval
Std Dev = standard deviation of background samples
m = number independent samples from each sampling point
n = number of background samples
For:Mean Conc = 687.2
Std Dev = 500.6
t(n-1,k,.95)*sqrt(1/m+1/n) = 2.490
k = 7
m =1
n =33
UPL = 1934 ug/L
June 2015 12 of 13 0739-603515.100
G:\Projects\Waste Industries\Red Rock\Groundwater\GWMR\March 2015\Stats\Barium Interwell March 2015.xlsx
Project Name:WI - Red Rock
Project No:073-9603515
Date:4/23/15
Parametric Tolerance Interval for Aitchison's adjusted data
Analyte:Barium
Background Data Quantitation
Concentration Limit
Sample No.Sample Date Location (ug/l)(ug/l)
1 10/31/01 MW-1 909 500
2 6/11/02 MW-1 ND 500
3 11/1/02 MW-1 ND 500
4 3/6/03 MW-1 ND 500
5 9/23/03 MW-1 1046 500
6 3/11/04 MW-1 752 500
7 6/11/02 MW-10 ND 500
8 11/1/02 MW-10 ND 500
9 3/6/03 MW-10 ND 500
10 9/23/03 MW-10 ND 500
11 3/11/04 MW-10 707 500
12 9/23/04 MW-10 ND 500
13 3/10/05 MW-10 872 500
14 9/22/05 MW-10 ND 500
15 3/6/06 MW-10 590 500
16 9/19/06 MW-10 ND 500
17 3/21/07 MW-10 901 100
18 9/28/07 MW-10 488 100
19 3/25/08 MW-10 710 100
20 9/29/08 MW-10 1040 100
21 3/30/09 MW-10 999 100
22 9/29/09 MW-10 1100 100
23 3/30/10 MW-10 1120 100
24 9/29/10 MW-10 892 100
25 4/6/11 MW-10 1080 100
26 9/28/11 MW-10 1410 100
27 3/28/12 MW-10 974 100
28 9/26/12 MW-10 1350 100
29 4/1/13 MW-10 1120 100
30 9/25/13 MW-10 1180 100
31 4/1/14 MW-10 996 100
32 9/29/14 MW-10 1410 100
33 3/31/15 MW-10 1030 100
Note: All sample concentrations are micrograms per liter
The background mean and standard deviation were modified using Aitchison's Adjustment.
The adjusted mean and standard deviation are as follows:
The adjusted mean and standard deviation are
adjusted mean =687.2
adjusted standard deviation =500.6
June 2015 13 of 13 0739-603515.100
G:\Projects\Waste Industries\Red Rock\Groundwater\GWMR\March 2015\Stats\Barium Interwell March 2015.xlsx
Using the background data, the upper Tolerance Limit can be determined using
Upper Tolerance Limit = (Mean Concentration) + K x (Standard Deviation Samples)
where:K = factor for constructing one sided normal tolerance limit
taken from table 4-2, page 87, Statistical Methods for Ground
Monitoring, Gibbons, 1994
n = number of background samples
For:K = 2.188
n = 33
UTL = 1782 ug/L
June 2015 1 of 10 0739-603515.100
G:\Projects\Waste Industries\Red Rock\Groundwater\GWMR\March 2015\Stats\Barium MW-3 Intrawell March 2015.xlsx
Project Name:WI - Red Rock
Project No:073-9603515
Date:4/23/15
Analyte:Barium Intrawell MW-3 Quantitation
Concentration Limit
Sample No.Sample Date Location (ug/L)(ug/L)
1 10/31/01 MW-3 1650 500
2 06/11/02 MW-3 1547 500
3 11/01/02 MW-3 1733 500
4 03/06/03 MW-3 1939 500
5 09/23/03 MW-3 2090 500
6 03/11/04 MW-3 1881 500
7 09/23/04 MW-3 1830 500
8 03/10/05 MW-3 2129 500
9 09/22/05 MW-3 1871 500
10 03/06/06 MW-3 1838 500
11 09/19/06 MW-3 2090 500
12 03/21/07 MW-3 2080 100
13 09/28/07 MW-3 1930 100
14 03/25/08 MW-3 2010 100
15 09/29/08 MW-3 2090 100
16 03/30/09 MW-3 1950 100
17 09/29/09 MW-3 1920 100
18 03/30/10 MW-3 1810 100
19 09/29/10 MW-3 1770 100
20 04/06/11 MW-3 2020 100
21 09/28/11 MW-3 2060 100
22 03/28/12 MW-3 2100 100
23 09/26/12 MW-3 2080 100
24 04/01/13 MW-3 2030 100
25 09/25/13 MW-3 2080 100
26 04/01/14 MW-3 2120 100
27 09/29/14 MW-3 2230 100
Number of Data 27
Number of Truncated Data 0
Percentage of Truncated Data 0%
Upper Prediction Interval: 2370 ug/L
June 2015 2 of 10 0739-603515.100
G:\Projects\Waste Industries\Red Rock\Groundwater\GWMR\March 2015\Stats\Barium MW-3 Intrawell March 2015.xlsx
Project Name:WI - Red Rock
Project No:073-9603515
Date:4/23/15
Probability Plots to determine the distribution of Barium Intrawell MW-3
Complete the following table where:
i = ordered value of sample, arranged from smallest to largest
X(i) = sample values arranged from smallest to largest
LN[X(i)] = Natural Log Value of sample concentrations arranged from
smallest to largest
[i/(n+1)] = Cumulative probability
n = number of samples = 27
X(i)LN[X(i)]i Rank [Rank/(n+1)]Quantiles
1547 7.34 1 1 0.036 -1.80
1650 7.41 2 2 0.071 -1.47
1733 7.46 3 3 0.107 -1.24
1770 7.48 4 4 0.143 -1.07
1810 7.50 5 5 0.179 -0.92
1830 7.51 6 6 0.214 -0.79
1838 7.52 7 7 0.250 -0.67
1871 7.53 8 8 0.286 -0.57
1881 7.54 9 9 0.321 -0.46
1920 7.56 10 10 0.357 -0.37
1930 7.57 11 11 0.393 -0.27
1939 7.57 12 12 0.429 -0.18
1950 7.58 13 13 0.464 -0.09
2010 7.61 14 14 0.500 0.00
2020 7.61 15 15 0.536 0.09
2030 7.62 16 16 0.571 0.18
2060 7.63 17 17 0.607 0.27
2080 7.64 18 18 0.643 0.37
2080 7.64 19 19 0.679 0.46
2080 7.64 20 20 0.714 0.57
2090 7.64 21 21 0.750 0.67
2090 7.64 22 22 0.786 0.79
2090 7.64 23 23 0.821 0.92
2100 7.65 24 24 0.857 1.07
2120 7.66 25 25 0.893 1.24
2129 7.66 26 26 0.929 1.47
2230 7.71 27 27 0.964 1.80
June 2015 3 of 10 0739-603515.100
G:\Projects\Waste Industries\Red Rock\Groundwater\GWMR\March 2015\Stats\Barium MW-3 Intrawell March 2015.xlsx
Project Name:WI - Red Rock
Project No:073-9603515
Date:04/23/15
Probability Plots to determine the distribution of Barium Intrawell MW-3
R² = 0.9363
-2.50
-2.00
-1.50
-1.00
-0.50
0.00
0.50
1.00
1.50
2.00
0 500 1000 1500 2000 2500
Qu
a
n
t
i
l
e

Concentration, Micrograms per Liter
Normal Probability Plot
Barium Concentrations
R² = 0.9166
-2.00
-1.50
-1.00
-0.50
0.00
0.50
1.00
1.50
2.00
7.30 7.40 7.50 7.60 7.70 7.80
Qu
a
n
t
i
l
e

Log Normal Concentrations
Log Normal Probability Plot Barium Concentrations
June 2015 4 of 10 0739-603515.100
G:\Projects\Waste Industries\Red Rock\Groundwater\GWMR\March 2015\Stats\Barium MW-3 Intrawell March 2015.xlsx
Project Name:WI - Red Rock
Project No:073-9603515
Date:4/23/15
Determination of reported background value as an outlier
Analyte:Barium Intrawell MW-3
Background Data Quantitation
Concentration Limit
Sample No.Sample Date Location (ug/l)(ug/l)
1 10/31/01 MW-3 1650 500
2 6/11/02 MW-3 1547 500
3 11/1/02 MW-3 1733 500
4 3/6/03 MW-3 1939 500
5 9/23/03 MW-3 2090 500
6 3/11/04 MW-3 1881 500
7 9/23/04 MW-3 1830 500
8 3/10/05 MW-3 2129 500
9 9/22/05 MW-3 1871 500
10 3/6/06 MW-3 1838 500
11 9/19/06 MW-3 2090 500
12 3/21/07 MW-3 2080 100
13 9/28/07 MW-3 1930 100
14 3/25/08 MW-3 2010 100
15 9/29/08 MW-3 2090 100
16 3/30/09 MW-3 1950 100
17 9/29/09 MW-3 1920 100
18 3/30/10 MW-3 1810 100
19 9/29/10 MW-3 1770 100
20 4/6/11 MW-3 2020 100
21 9/28/11 MW-3 2060 100
22 3/28/12 MW-3 2100 100
23 9/26/12 MW-3 2080 100
24 4/1/13 MW-3 2030 100
25 9/25/13 MW-3 2080 100
26 4/1/14 MW-3 2120 100
27 9/29/14 MW-3 2230 100
mean = 1958.444
STD = 162.585
Note: All concentrations are micrograms per liter
Using the data listed above, form the statistic Tn:
Tn = (Xn - mean) / STD
where:Xn = largest observed sample value
mean = mean of the background values
STD = standard deviation of the background values
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For Xn = 2230.000
mean = 1958.444
STD = 162.585
Tn = 1.670
From Table 8 included in the Statistical Analysis of Groundwater Monitoring Data at
RCRA Facilities - Interim Final Guidance, the critical value for the given sample group is
Number of samples =27
Tc = 2.698
Since Tc>Tn, the sample result is not considered to be an outlier
June 2015 6 of 10 0739-603515.100
G:\Projects\Waste Industries\Red Rock\Groundwater\GWMR\March 2015\Stats\Barium MW-3 Intrawell March 2015.xlsx
Project Name:WI - Red Rock
Project No:073-9603515
Date:4/23/15
Shapiro Wilk Test Statistic (W) for normality of total Barium Intrawell MW-3
Complete the following table where
i = ordered value of sample, arranged from smallest to largest
X(i) = sample values arranged from smallest to largest
X(n-i+1) = sample values arranged from largest to smallest
A(n-i+1) = coefficient from table A-1, Statistical Analysis of Ground-Water
Data at RCRA Facilities
B(i) = summation of (X(n-i+1)-X(i))A(n-i+1)
i X(i)X(n-i+1)X(n-i+1) - X(i)A(n-i+1)B(i)
1 1547.00 2230.00 683 0.4366 298.20
2 1650.00 2129.00 479 0.3018 144.56
3 1733.00 2120.00 387 0.2522 97.60
4 1770.00 2100.00 330 0.2152 71.02
5 1810.00 2090.00 280 0.1848 51.74
6 1830.00 2090.00 260 0.1584 41.18
7 1838.00 2090.00 252 0.1346 33.92
8 1871.00 2080.00 209 0.1128 23.58
9 1881.00 2080.00 199 0.0923 18.37
10 1920.00 2080.00 160 0.0728 11.65
11 1930.00 2060.00 130 0.054 7.02
12 1939.00 2030.00 91 0.0358 3.26
13 1950.00 2020.00 70 0.0178 1.25
14 2010.00 2010.00 0 0.0000 0.00
15 2020.00 1950.00
16 2030.00 1939.00
17 2060.00 1930.00
18 2080.00 1920.00
19 2080.00 1881.00
20 2080.00 1871.00
21 2090.00 1838.00
22 2090.00 1830.00
23 2090.00 1810.00
24 2100.00 1770.00
25 2120.00 1733.00
26 2129.00 1650.00
27 2230.00 1547.00
The test statistic W can be found using:
W = SQR[B/(SD x SQRT(n-1))]
where:B = summation of (X(n-i+1)-X(i))A(n-i+1)=803.34
SD = standard deviation of the data group =162.58
n = number of samples =27
W =0.939
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G:\Projects\Waste Industries\Red Rock\Groundwater\GWMR\March 2015\Stats\Barium MW-3 Intrawell March 2015.xlsx
Compare this value to the critical value in Table A-2 of Statistical Analysisof Ground-Water
Monitoring Data at RCRA Facilities, Addendum to Interim Final Guidance (Draft)
July, 1992, to determine if the data is normally distributed.
From Table A-2 with (n) samples and a 95% confidence level, the critical value is
W(crit) = 0.923
and the calculated W = 0.939
Therefore the data set is Normal
June 2015 8 of 10 0739-603515.100
G:\Projects\Waste Industries\Red Rock\Groundwater\GWMR\March 2015\Stats\Barium MW-3 Intrawell March 2015.xlsx
Project Name:WI - Red Rock
Project No:073-9603515
Date:4/23/15
Parametric Prediction Interval for normally distributed data
Analyte:Barium Intrawell MW-3
Background Data Quantitation
Concentration Limit
Sample No.Sample Date Location (ug/l)(ug/l)
1 10/31/01 MW-3 1650 500.00
2 6/11/02 MW-3 1547 500.00
3 11/1/02 MW-3 1733 500.00
4 3/6/03 MW-3 1939 500.00
5 9/23/03 MW-3 2090 500.00
6 3/11/04 MW-3 1881 500.00
7 9/23/04 MW-3 1830 500.00
8 3/10/05 MW-3 2129 500.00
9 9/22/05 MW-3 1871 500.00
10 3/6/06 MW-3 1838 500.00
11 9/19/06 MW-3 2090 500.00
12 3/21/07 MW-3 2080 100.00
13 9/28/07 MW-3 1930 100.00
14 3/25/08 MW-3 2010 100.00
15 9/29/08 MW-3 2090 100.00
16 3/30/09 MW-3 1950 100.00
17 9/29/09 MW-3 1920 100.00
18 3/30/10 MW-3 1810 100.00
19 9/29/10 MW-3 1770 100.00
20 4/6/11 MW-3 2020 100.00
21 9/28/11 MW-3 2060 100.00
22 3/28/12 MW-3 2100 100.00
23 9/26/12 MW-3 2080 100.00
24 4/1/13 MW-3 2030 100.00
25 9/25/13 MW-3 2080 100.00
26 4/1/14 MW-3 2120 100.00
27 9/29/14 MW-3 2230 100.00
Note: All sample concentrations are micrograms per liter
Using the background data, the upper Prediction Limit can be determined using:
Upper Prediction Limit = (Mean Conc) + t(n-1,k,.95) x (Std Dev) x SQRT(1/m+1/n)
where:Mean Conc = mean concentration background samples
t(n-1k,.95) = Bonferroni t-statistic with
n-1 = degrees of freedom (number of samples - 1)
k = number of downgradient samples per event
.95 = confidence interval
Std Dev = standard deviation of background samples
m = number independent samples from each sampling point
n = number of background samples
For:Mean Conc = 1958.444
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G:\Projects\Waste Industries\Red Rock\Groundwater\GWMR\March 2015\Stats\Barium MW-3 Intrawell March 2015.xlsx
Std Dev = 162.585
t(n-1,k,.95)*sqrt(1/m+1/n) = 2.530
k = 1
m =1
n =27
UPL = 2370 ug/L
June 2015 10 of 10 0739-603515.100
G:\Projects\Waste Industries\Red Rock\Groundwater\GWMR\March 2015\Stats\Barium MW-3 Intrawell March 2015.xlsx
Project Name:WI - Red Rock
Project No:073-9603515
Date:4/23/15
Parametric Tolerance Interval for normally distributed data
Analyte:Barium Intrawell MW-3
Background Data Quantitation
Concentration Limit
Sample No.Sample Date Location (ug/l)(ug/l)
1 10/31/01 MW-3 1650 500.00
2 6/11/02 MW-3 1547 500.00
3 11/1/02 MW-3 1733 500.00
4 3/6/03 MW-3 1939 500.00
5 9/23/03 MW-3 2090 500.00
6 3/11/04 MW-3 1881 500.00
7 9/23/04 MW-3 1830 500.00
8 3/10/05 MW-3 2129 500.00
9 9/22/05 MW-3 1871 500.00
10 3/6/06 MW-3 1838 500.00
11 9/19/06 MW-3 2090 500.00
12 3/21/07 MW-3 2080 100.00
13 9/28/07 MW-3 1930 100.00
14 3/25/08 MW-3 2010 100.00
15 9/29/08 MW-3 2090 100.00
16 3/30/09 MW-3 1950 100.00
17 9/29/09 MW-3 1920 100.00
18 3/30/10 MW-3 1810 100.00
19 9/29/10 MW-3 1770 100.00
20 4/6/11 MW-3 2020 100.00
21 9/28/11 MW-3 2060 100.00
22 3/28/12 MW-3 2100 100.00
23 9/26/12 MW-3 2080 100.00
24 4/1/13 MW-3 2030 100.00
25 9/25/13 MW-3 2080 100.00
26 4/1/14 MW-3 2120 100.00
27 9/29/14 MW-3 2230 100.00
Note: All sample concentrations are micrograms per liter
Using the background data, the upper Tolerance Limit can be determined using:
Upper Tolerance Limit = (Mean Concentration) + K x (Standard Deviation Samples)
where:Mean Conc = mean concentration background samples
K = factor for constructing one sided normal tolerance limit
taken from table 4-2, page 87, Statistical Methods for Groundwater
Monitoring, Gibbons, 1994
n = number of background samples
STDS = Standard Deviation Samples
For:n = 27
K = 2.263
Mean Conc = 1958.44
STDS = 162.58
UTL = 2326 ug/L
June 2015 1 of 9 0739-603515.100
G:\Projects\Waste Industries\Red Rock\Groundwater\GWMR\March 2015\Stats\Barium MW-6T Intrawell March 2015.xlsx
Project Name:WI - Red Rock
Project No:073-9603515
Date:4/23/15
Analyte:Barium Intrawell MW-6T Quantitation
Concentration Limit
Sample No.Sample Date Location (ug/L)(ug/L)
1 6/11/2002 MW-6T 837 500
2 11/1/2002 MW-6T 787 500
3 3/6/2003 MW-6T 936 500
4 9/23/2003 MW-6T 1066 500
5 3/11/2004 MW-6T 966 500
6 9/23/2004 MW-6T 977 500
7 3/10/2005 MW-6T 1164 500
8 9/22/2005 MW-6T 1018 500
9 3/6/2006 MW-6T 1458 500
10 9/19/2006 MW-6T 1787 500
11 3/21/2007 MW-6T 1700 100
12 9/28/2007 MW-6T 1800 100
13 3/25/2008 MW-6T 1470 100
14 9/29/2008 MW-6T 1880 100
15 3/30/2009 MW-6T 1950 100
16 9/29/2009 MW-6T 2180 100
17 3/30/2010 MW-6T 1880 100
18 9/29/2010 MW-6T 1420 100
19 4/6/2011 MW-6T 2040 100
20 9/28/2011 MW-6T 2230 100
21 3/28/2012 MW-6T 2250 100
22 9/26/2012 MW-6T 2420 100
23 4/1/2013 MW-6T 2280 100
24 9/25/2014 MW-6T 2390 100
25 4/1/2014 MW-6T 2370 100
26 9/29/2014 MW-6T 2540 100
Number of Data 26
Number of Truncated Data 0
Percentage of Truncated Data 0%
Nonparametric Prediction Interval: 2540 ug/L
June 2015 2 of 9 0739-603515.100
G:\Projects\Waste Industries\Red Rock\Groundwater\GWMR\March 2015\Stats\Barium MW-6T Intrawell March 2015.xlsx
Project Name:WI - Red Rock
Project No:073-9603515
Date:4/23/15
Probability Plots to determine the distribution of Barium Intrawell MW-6T
Complete the following table where:
i = ordered value of sample, arranged from smallest to largest
X(i) = sample values arranged from smallest to largest
LN[X(i)] = Natural Log Value of sample concentrations arranged from
smallest to largest
[i/(n+1)] = Cumulative probability
n = number of samples = 26
X(i)LN[X(i)]i Rank [Rank/(n+1)]Quantiles
787 6.67 1 1 0.037 -1.79
837 6.73 2 2 0.074 -1.45
936 6.84 3 3 0.111 -1.22
966 6.87 4 4 0.148 -1.04
977 6.88 5 5 0.185 -0.90
1018 6.93 6 6 0.222 -0.76
1066 6.97 7 7 0.259 -0.65
1164 7.06 8 8 0.296 -0.54
1420 7.26 9 9 0.333 -0.43
1458 7.28 10 10 0.370 -0.33
1470 7.29 11 11 0.407 -0.23
1700 7.44 12 12 0.444 -0.14
1787 7.49 13 13 0.481 -0.05
1800 7.50 14 14 0.519 0.05
1880 7.54 15 15 0.556 0.14
1880 7.54 16 16 0.593 0.23
1950 7.58 17 17 0.630 0.33
2040 7.62 18 18 0.667 0.43
2180 7.69 19 19 0.704 0.54
2230 7.71 20 20 0.741 0.65
2250 7.72 21 21 0.778 0.76
2280 7.73 22 22 0.815 0.90
2370 7.77 23 23 0.852 1.04
2390 7.78 24 24 0.889 1.22
2420 7.79 25 25 0.926 1.45
2540 7.84 26 26 0.963 1.79
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G:\Projects\Waste Industries\Red Rock\Groundwater\GWMR\March 2015\Stats\Barium MW-6T Intrawell March 2015.xlsx
Project Name:WI - Red Rock
Project No:073-9603515
Date:04/23/15
Probability Plots to determine the distribution of Barium Intrawell MW-6T
R² = 0.9494
-2.00
-1.50
-1.00
-0.50
0.00
0.50
1.00
1.50
2.00
0 500 1000 1500 2000 2500 3000
Qu
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t
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Concentration, Micrograms per Liter
Normal Probability Plot
Barium Concentrations
R² = 0.9243
-2.00
-1.50
-1.00
-0.50
0.00
0.50
1.00
1.50
2.00
6.50 7.00 7.50 8.00
Qu
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Log Normal Concentrations
Log Normal Probability Plot Barium Concentrations
June 2015 4 of 9 0739-603515.100
G:\Projects\Waste Industries\Red Rock\Groundwater\GWMR\March 2015\Stats\Barium MW-6T Intrawell March 2015.xlsx
Project Name:WI - Red Rock
Project No:073-9603515
Date:4/23/15
Determination of reported background value as an outlier
Analyte:Barium Intrawell MW-6T
Background Data Quantitation
Concentration Limit
Sample No.Sample Date Location (ug/l)(ug/l)
1 6/11/02 MW-6T 837 500
2 11/1/02 MW-6T 787 500
3 3/6/03 MW-6T 936 500
4 9/23/03 MW-6T 1066 500
5 3/11/04 MW-6T 966 500
6 9/23/04 MW-6T 977 500
7 3/10/05 MW-6T 1164 500
8 9/22/05 MW-6T 1018 500
9 3/6/06 MW-6T 1458 500
10 9/19/06 MW-6T 1787 500
11 3/21/07 MW-6T 1700 100
12 9/28/07 MW-6T 1800 100
13 3/25/08 MW-6T 1470 100
14 9/29/08 MW-6T 1880 100
15 3/30/09 MW-6T 1950 100
16 9/29/09 MW-6T 2180 100
17 3/30/10 MW-6T 1880 100
18 9/29/10 MW-6T 1420 100
19 4/6/11 MW-6T 2040 100
20 9/28/11 MW-6T 2230 100
21 3/28/12 MW-6T 2250 100
22 9/26/12 MW-6T 2420 100
23 4/1/13 MW-6T 2280 100
24 9/25/14 MW-6T 2390 100
25 4/1/14 MW-6T 2370 100
26 9/29/14 MW-6T 2540 100
mean = 1684.462
STD = 569.953
Note: All concentrations are micrograms per liter
Using the data listed above, form the statistic Tn:
Tn = (Xn - mean) / STD
where:Xn = largest observed sample value
mean = mean of the background values
STD = standard deviation of the background values
For Xn = 2540.000
mean = 1684.462
STD = 569.953
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Tn = 1.501
From Table 8 included in the Statistical Analysis of Groundwater Monitoring Data at
RCRA Facilities - Interim Final Guidance, the critical value for the given sample group is
Number of samples =26
Tc = 2.681
Since Tc>Tn, the sample result is not considered to be an outlier
June 2015 6 of 9 0739-603515.100
G:\Projects\Waste Industries\Red Rock\Groundwater\GWMR\March 2015\Stats\Barium MW-6T Intrawell March 2015.xlsx
Project Name:WI - Red Rock
Project No:073-9603515
Date:4/23/15
Shapiro Wilk Test Statistic (W) for normality of total Barium Intrawell MW-6T
Complete the following table where
i = ordered value of sample, arranged from smallest to largest
X(i) = sample values arranged from smallest to largest
X(n-i+1) = sample values arranged from largest to smallest
A(n-i+1) = coefficient from table A-1, Statistical Analysis of Ground-Water
Data at RCRA Facilities
B(i) = summation of (X(n-i+1)-X(i))A(n-i+1)
i X(i)X(n-i+1)X(n-i+1) - X(i)A(n-i+1)B(i)
1 787.00 2540.00 1753 0.4407 772.55
2 837.00 2420.00 1583 0.3043 481.71
3 936.00 2390.00 1454 0.2533 368.30
4 966.00 2370.00 1404 0.2151 302.00
5 977.00 2280.00 1303 0.1836 239.23
6 1018.00 2250.00 1232 0.1563 192.56
7 1066.00 2230.00 1164 0.1316 153.18
8 1164.00 2180.00 1016 0.1089 110.64
9 1420.00 2040.00 620 0.0876 54.31
10 1458.00 1950.00 492 0.0672 33.06
11 1470.00 1880.00 410 0.0476 19.52
12 1700.00 1880.00 180 0.0284 5.11
13 1787.00 1800.00 13 0.0094 0.12
14 1800.00 1787.00
15 1880.00 1700.00
16 1880.00 1470.00
17 1950.00 1458.00
18 2040.00 1420.00
19 2180.00 1164.00
20 2230.00 1066.00
21 2250.00 1018.00
22 2280.00 977.00
23 2370.00 966.00
24 2390.00 936.00
25 2420.00 837.00
26 2540.00 787.00
The test statistic W can be found using:
W = SQR[B/(SD x SQRT(n-1))]
where:B = summation of (X(n-i+1)-X(i))A(n-i+1)=2732.29
SD = standard deviation of the data group =569.95
n = number of samples =26
W =0.919
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G:\Projects\Waste Industries\Red Rock\Groundwater\GWMR\March 2015\Stats\Barium MW-6T Intrawell March 2015.xlsx
Compare this value to the critical value in Table A-2 of Statistical Analysisof Ground-Water
Monitoring Data at RCRA Facilities, Addendum to Interim Final Guidance (Draft)
July, 1992, to determine if the data is normally distributed.
From Table A-2 with (n) samples and a 95% confidence level, the critical value is
W(crit) = 0.92
and the calculated W = 0.919
Therefore the data is Non Normal
June 2015 8 of 9 0739-603515.100
G:\Projects\Waste Industries\Red Rock\Groundwater\GWMR\March 2015\Stats\Barium MW-6T Intrawell March 2015.xlsx
Project Name:WI - Red Rock
Project No:073-9603515
Date:4/23/15
Shapiro Wilk Test Statistic (W) for log normality of Barium Intrawell MW-6T
Complete the following table where
i = ordered value of sample, arranged from smallest to largest
X(i) = sample values arranged from smallest to largest
X(n-i+1) = sample values arranged from largest to smallest
A(n-i+1) = coefficient from table A-1, Statistical Analysis of Ground-Water
Data at RCRA Facilities
B(i) = summation of (X(n-i+1)-X(i))A(n-i+1)
i X(i)X(n-i+1)X(n-i+1) - X(i)A(n-i+1)B(i)
1 6.67 7.84 1.1717 0.4407 0.5164
2 6.73 7.79 1.0617 0.3043 0.3231
3 6.84 7.78 0.9374 0.2533 0.2375
4 6.87 7.77 0.8975 0.2151 0.1930
5 6.88 7.73 0.8474 0.1836 0.1556
6 6.93 7.72 0.7931 0.1563 0.1240
7 6.97 7.71 0.7381 0.1316 0.0971
8 7.06 7.69 0.6275 0.1089 0.0683
9 7.26 7.62 0.3623 0.0876 0.0317
10 7.28 7.58 0.2908 0.0672 0.0195
11 7.29 7.54 0.2460 0.0476 0.0117
12 7.44 7.54 0.1006 0.0284 0.0029
13 7.49 7.50 0.0072 0.0094 0.0001
14 7.50 7.49
15 7.54 7.44
16 7.54 7.29
17 7.58 7.28
18 7.62 7.26
19 7.69 7.06
20 7.71 6.97
21 7.72 6.93
22 7.73 6.88
23 7.77 6.87
24 7.78 6.84
25 7.79 6.73
26 7.84 6.67
The test statistic W can be found using:
W = SQR((B/SD x SQRT(n-1))
where:B = summation of (X(n-i+1)-X(i))A(n-i+1)=1.7809
SD = standard deviation of the data group =0.3759
n = number of samples =26
W =0.8976
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G:\Projects\Waste Industries\Red Rock\Groundwater\GWMR\March 2015\Stats\Barium MW-6T Intrawell March 2015.xlsx
Compare this value to the critical value in Table A-2 of Statistical Analysisof Ground-Water
Monitoring Data at RCRA Facilities, Addendum to Interim Final Guidance (Draft)
July, 1992, to determine if the data is normally distributed.
From Table A-2 with (n) samples and a 95% confidence level, the critical value is
W(crit) = 0.92
and the calculated W = 0.898
Therefore the data is Non Normal
June 2015 1 of 1 0739-603515.100
G:\Projects\Waste Industries\Red Rock\Groundwater\GWMR\March 2015\Stats\Vanadium Interwell March 2015.xlsx
Project Name:WI - Red Rock
Project No:073-9603515
Date:4/23/15
Analyte:Vanadium Quantitation
Concentration Limit
Sample No.Sample Date Location (ug/L)(ug/L)
1 10/31/2001 MW-1 ND 25
2 3/21/2007 MW-10 ND 25
3 9/28/2007 MW-10 ND 25
4 3/25/2008 MW-10 ND 25
5 9/29/2008 MW-10 ND 25
6 3/30/2009 MW-10 ND 25
7 9/29/2009 MW-10 ND 25
8 3/30/2010 MW-10 ND 25
9 9/29/2010 MW-10 ND 25
10 4/6/2011 MW-10 ND 25
11 9/28/2011 MW-10 ND 25
12 3/28/2012 MW-10 ND 25
13 9/26/2012 MW-10 ND 25
14 4/1/2013 MW-10 ND 25
15 9/25/2013 MW-10 ND 25
16 4/1/2014 MW-10 ND 25
17 9/29/2014 MW-10 ND 25
18 3/31/2015 MW-10 ND 25
Number of Data 18
Number of Truncated Data 18
Percentage of Truncated Data 100%
Nonparametric Prediction Interval: 25.0 ug/L
June 2015 1 of 7 0739-603515.100
G:\Projects\Waste Industries\Red Rock\Groundwater\GWMR\March 2015\Stats\Vanadium MW-3 Intrawell March 2015.xlsx
Project Name:WI - Red Rock
Project No:073-9603515
Date:4/23/15
Analyte:Vanadium (MW-3 Intrawell)Quantitation
Concentration Limit
Sample No.Sample Date Location (ug/L)(ug/L)
1 10/31/2001 MW-3 50 J 25
2 3/21/2007 MW-3 22.9 J 25
3 9/28/2007 MW-3 29.6 25
4 3/25/2008 MW-3 25.5 25
5 9/29/2008 MW-3 24.6 J 25
6 3/30/2009 MW-3 41.3 25
7 9/29/2009 MW-3 35.1 25
8 3/30/2010 MW-3 30.3 25
9 9/29/2010 MW-3 23.3 J 25
10 4/6/2011 MW-3 28.0 25
11 9/28/2011 MW-3 34.4 25
12 3/28/2012 MW-3 25.1 25
13 9/26/2012 MW-3 22.0 J 25
14 4/1/2013 MW-3 24.8 J 25
15 9/25/2013 MW-3 25.2 25
16 4/1/2014 MW-3 23.1 J 25
17 3/31/2015 MW-3 26.3 25
Number of Data 17
Number of Truncated Data 0
Percentage of Truncated Data 0%
Nonparametric Prediction Interval: 50.0 ug/L
June 2015 2 of 7 0739-603515.100
G:\Projects\Waste Industries\Red Rock\Groundwater\GWMR\March 2015\Stats\Vanadium MW-3 Intrawell March 2015.xlsx
Project Name:WI - Red Rock
Project No:073-9603515
Date:4/23/15
Probability Plots to determine the distribution of Vanadium (MW-3 Intrawell)
Complete the following table where:
i = ordered value of sample, arranged from smallest to largest
X(i) = sample values arranged from smallest to largest
LN[X(i)] = Natural Log Value of sample concentrations arranged from
smallest to largest
[i/(n+1)] = Cumulative probability
n = number of samples = 17
X(i)LN[X(i)]i Rank [Rank/(n+1)]Quantiles
22 3.09 1 1 0.056 -1.59
22.9 3.13 2 2 0.111 -1.22
23.1 3.14 3 3 0.167 -0.97
23.3 3.15 4 4 0.222 -0.76
24.6 3.20 5 5 0.278 -0.59
24.8 3.21 6 6 0.333 -0.43
25.1 3.22 7 7 0.389 -0.28
25.2 3.23 8 8 0.444 -0.14
25.5 3.24 9 9 0.500 0.00
26.3 3.27 10 10 0.556 0.14
28 3.33 11 11 0.611 0.28
29.6 3.39 12 12 0.667 0.43
30.3 3.41 13 13 0.722 0.59
34.4 3.54 14 14 0.778 0.76
35.1 3.56 15 15 0.833 0.97
41.3 3.72 16 16 0.889 1.22
50 3.91 17 17 0.944 1.59
June 2015 3 of 7 0739-603515.100
G:\Projects\Waste Industries\Red Rock\Groundwater\GWMR\March 2015\Stats\Vanadium MW-3 Intrawell March 2015.xlsx
Project Name:WI - Red Rock
Project No:073-9603515
Date:04/23/15
Probability Plots to determine the distribution of Vanadium (MW-3 Intrawe
R² = 0.7858
-2.00
-1.50
-1.00
-0.50
0.00
0.50
1.00
1.50
2.00
0 10 20 30 40 50 60
Qu
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Concentration, Micrograms per Liter
Normal Probability Plot
Vanadium Concentrations
R² = 0.8617
-2.00
-1.50
-1.00
-0.50
0.00
0.50
1.00
1.50
2.00
2.50
0.00 1.00 2.00 3.00 4.00 5.00
Qu
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Log Normal Concentrations
Log Normal Probability Plot Vanadium Concentrations
June 2015 4 of 7 0739-603515.100
G:\Projects\Waste Industries\Red Rock\Groundwater\GWMR\March 2015\Stats\Vanadium MW-3 Intrawell March 2015.xlsx
Project Name:WI - Red Rock
Project No:073-9603515
Date:4/23/15
Determination of reported background value as an outlier
Analyte:Vanadium (MW-3 Intrawell)
Background Data Quantitation
Concentration Limit
Sample No.Sample Date Location (ug/l)(ug/l)
1 10/31/01 MW-3 50 J 25
2 3/21/07 MW-3 22.9 J 25
3 9/28/07 MW-3 29.6 25
4 3/25/08 MW-3 25.5 25
5 9/29/08 MW-3 24.6 J 25
6 3/30/09 MW-3 41.3 25
7 9/29/09 MW-3 35.1 25
8 3/30/10 MW-3 30.3 25
9 9/29/10 MW-3 23.3 J 25
10 4/6/11 MW-3 28 25
11 9/28/11 MW-3 34.4 25
12 3/28/12 MW-3 25.1 25
13 9/26/12 MW-3 22 J 25
14 4/1/13 MW-3 24.8 J 25
15 9/25/13 MW-3 25.2 25
16 4/1/14 MW-3 23.1 J 25
17 3/31/15 MW-3 26.3 25
mean = 28.912
STD = 7.505
Note: All concentrations are micrograms per liter
Using the data listed above, form the statistic Tn:
Tn = (Xn - mean) / STD
where:Xn = largest observed sample value
mean = mean of the background values
STD = standard deviation of the background values
For Xn = 50.000
mean = 28.912
STD = 7.505
Tn = 2.810
From Table 8 included in the Statistical Analysis of Groundwater Monitoring Data at
RCRA Facilities - Interim Final Guidance, the critical value for the given sample group is
Number of samples =17
Tc = 2.475
Since Tc<Tn, the sample result is considered to be an outlier
June 2015 5 of 7 0739-603515.100
G:\Projects\Waste Industries\Red Rock\Groundwater\GWMR\March 2015\Stats\Vanadium MW-3 Intrawell March 2015.xlsx
Project Name:WI - Red Rock
Project No:073-9603515
Date:4/23/15
Determination of reported background value as an outlier
Analyte:Vanadium (MW-3 Intrawell)
Background Data Quantitation
ln(Concentration)Limit
Sample No.Sample Date Location (ug/l)(ug/l)
1 10/31/01 MW-3 3.9120 J 25
2 3/21/07 MW-3 3.1311 J 25
3 9/28/07 MW-3 3.3878 25
4 3/25/08 MW-3 3.2387 25
5 9/29/08 MW-3 3.2027 J 25
6 3/30/09 MW-3 3.7209 25
7 9/29/09 MW-3 3.5582 25
8 3/30/10 MW-3 3.4111 25
9 9/29/10 MW-3 3.1485 J 25
10 4/6/11 MW-3 3.3322 25
11 9/28/11 MW-3 3.5381 25
12 3/28/12 MW-3 3.2229 25
13 9/26/12 MW-3 3.0910 J 25
14 4/1/13 MW-3 3.2108 J 25
15 9/25/13 MW-3 3.2268 25
16 4/1/14 MW-3 3.1398 J 25
17 3/31/15 MW-3 3.2696 25
mean = 3.338
STD = 0.227
Note: All concentrations are micrograms per liter
Using the data listed above, form the statistic Tn:
Tn = (Xn - mean) / STD
where:Xn = largest observed sample value
mean = mean of the background values
STD = standard deviation of the background values
For Xn = 3.912
mean = 3.338
STD = 0.227
Tn = 2.527
From Table 8 included in the Staistical Analysis of Groundwater Monitoring Data at
RCRA Facilities - Interim Final Guidance, the critical value for the given sample group is
Number of samples =17
Tc = 2.475
Since Tc<Tn, the sample result is considered to be an outlier
June 2015 6 of 7 0739-603515.100
G:\Projects\Waste Industries\Red Rock\Groundwater\GWMR\March 2015\Stats\Vanadium MW-3 Intrawell March 2015.xlsx
Project Name:WI - Red Rock
Project No:073-9603515
Date:4/23/15
Shapiro Wilk Test Statistic (W) for normality of total Vanadium (MW-3 Intrawell)
Complete the following table where
i = ordered value of sample, arranged from smallest to largest
X(i) = sample values arranged from smallest to largest
X(n-i+1) = sample values arranged from largest to smallest
A(n-i+1) = coefficient from table A-1, Statistical Analysis of Ground-Water
Data at RCRA Facilities
B(i) = summation of (X(n-i+1)-X(i))A(n-i+1)
i X(i)X(n-i+1)X(n-i+1) - X(i)A(n-i+1)B(i)
1 22.00 50.00 28 0.4968 13.91
2 22.90 41.30 18.4 0.3273 6.02
3 23.10 35.10 12 0.254 3.05
4 23.30 34.40 11.1 0.1988 2.21
5 24.60 30.30 5.7 0.1524 0.87
6 24.80 29.60 4.8 0.1109 0.53
7 25.10 28.00 2.9 0.0725 0.21
8 25.20 26.30 1.1 0.0359 0.04
9 25.50 25.50 0 0 0.00
10 26.30 25.20
11 28.00 25.10
12 29.60 24.80
13 30.30 24.60
14 34.40 23.30
15 35.10 23.10
16 41.30 22.90
17 50.00 22.00
The test statistic W can be found using:
W = SQR[B/(SD x SQRT(n-1))]
where:B = summation of (X(n-i+1)-X(i))A(n-i+1)=26.84
SD = standard deviation of the data group =7.51
n = number of samples =17
W =0.799
Compare this value to the critical value in Table A-2 of Statistical Analysisof Ground-Water
Monitoring Data at RCRA Facilities, Addendum to Interim Final Guidance (Draft)
July, 1992, to determine if the data is normally distributed.
From Table A-2 with (n) samples and a 95% confidence level, the critical value is
W(crit) = 0.892
and the calculated W = 0.799
Therefore the data is Non Normal
June 2015 7 of 7 0739-603515.100
G:\Projects\Waste Industries\Red Rock\Groundwater\GWMR\March 2015\Stats\Vanadium MW-3 Intrawell March 2015.xlsx
Project Name:WI - Red Rock
Project No:073-9603515
Date:4/23/15
Shapiro Wilk Test Statistic (W) for log normality of Vanadium (MW-3 Intrawell)
Complete the following table where
i = ordered value of sample, arranged from smallest to largest
X(i) = sample values arranged from smallest to largest
X(n-i+1) = sample values arranged from largest to smallest
A(n-i+1) = coefficient from table A-1, Statistical Analysis of Ground-Water
Data at RCRA Facilities
B(i) = summation of (X(n-i+1)-X(i))A(n-i+1)
i X(i)X(n-i+1)X(n-i+1) - X(i)A(n-i+1)B(i)
1 3.09 3.91 0.8210 0.4968 0.4079
2 3.13 3.72 0.5897 0.3273 0.1930
3 3.14 3.56 0.4184 0.2540 0.1063
4 3.15 3.54 0.3896 0.1988 0.0775
5 3.20 3.41 0.2084 0.1524 0.0318
6 3.21 3.39 0.1769 0.1109 0.0196
7 3.22 3.33 0.1093 0.0725 0.0079
8 3.23 3.27 0.0427 0.0359 0.0015
9 3.24 3.24 0.0000 0.0000 0.0000
10 3.27 3.23
11 3.33 3.22
12 3.39 3.21
13 3.41 3.20
14 3.54 3.15
15 3.56 3.14
16 3.72 3.13
17 3.91 3.09
The test statistic W can be found using:
W = SQR((B/SD x SQRT(n-1))
where:B = summation of (X(n-i+1)-X(i))A(n-i+1)=0.8454
SD = standard deviation of the data group =0.2272
n = number of samples =17
W =0.8653
Compare this value to the critical value in Table A-2 of Statistical Analysisof Ground-Water
Monitoring Data at RCRA Facilities, Addendum to Interim Final Guidance (Draft)
July, 1992, to determine if the data is normally distributed.
From Table A-2 with (n) samples and a 95% confidence level, the critical value is
W(crit) = 0.892
and the calculated W = 0.865
Therefore the data is Non Normal
June 2015 1 of 9 0739-603515.100
G:\Projects\Waste Industries\Red Rock\Groundwater\GWMR\March 2015\Stats\Iron Interwell March 2015.xlsx
Project Name:WI - Red Rock
Project No:073-9603515
Date:4/27/15
Analyte:Iron Quantitation
Concentration Limit
Sample No.Sample Date Location (ug/L)(ug/L)
1 03/21/07 MW-10 20 J 300
2 09/28/07 MW-10 170 J 300
3 03/25/08 MW-10 242 J 300
4 09/29/08 MW-10 144 J 300
5 03/30/09 MW-10 141 J 300
6 09/29/09 MW-10 457 300
7 03/30/10 MW-10 79.7 J 300
8 09/29/10 MW-10 23.0 J 300
9 04/06/11 MW-10 27.9 J 300
10 09/28/11 MW-10 36.4 J 300
11 03/28/12 MW-10 34.7 J 300
12 09/26/12 MW-10 30.0 J 300
13 04/01/13 MW-10 64.5 J 300
14 09/25/13 MW-10 95.5 J 300
15 04/01/14 MW-10 150 Value is 1/2 QL 300
16 09/29/14 MW-10 150 Value is 1/2 QL 300
17 03/31/15 MW-10 126 J 300
Number of Data 17
Number of Truncated Data 2
Percentage of Truncated Data 12%
Upper Tolerance Interval:940 ug/L
June 2015 2 of 9 0739-603515.100
G:\Projects\Waste Industries\Red Rock\Groundwater\GWMR\March 2015\Stats\Iron Interwell March 2015.xlsx
Project Name:WI - Red Rock
Project No:073-9603515
Date:4/27/15
Probability Plots to determine the distribution of Iron
Complete the following table where:
i = ordered value of sample, arranged from smallest to largest
X(i) = sample values arranged from smallest to largest
LN[X(i)] = Natural Log Value of sample concentrations arranged from
smallest to largest
[i/(n+1)] = Cumulative probability
n = number of samples = 17
X(i)LN[X(i)]i Rank [Rank/(n+1)]Quantiles
20 3.00 1 1 0.056 -1.59
23 3.14 2 2 0.111 -1.22
27.9 3.33 3 3 0.167 -0.97
30 3.40 4 4 0.222 -0.76
34.7 3.55 5 5 0.278 -0.59
36.4 3.59 6 6 0.333 -0.43
64.5 4.17 7 7 0.389 -0.28
79.7 4.38 8 8 0.444 -0.14
95.5 4.56 9 9 0.500 0.00
126 4.84 10 10 0.556 0.14
141 4.95 11 11 0.611 0.28
144 4.97 12 12 0.667 0.43
150 5.01 13 13 0.722 0.59
150 5.01 14 14 0.778 0.76
170 5.14 15 15 0.833 0.97
242 5.49 16 16 0.889 1.22
457 6.12 17 17 0.944 1.59
June 2015 3 of 9 0739-603515.100
G:\Projects\Waste Industries\Red Rock\Groundwater\GWMR\March 2015\Stats\Iron Interwell March 2015.xlsx
Project Name:WI - Red Rock
Project No:073-9603515
Date:04/27/15
Probability Plots to determine the distribution of Iron
R² = 0.762
-2.00
-1.50
-1.00
-0.50
0.00
0.50
1.00
1.50
2.00
0 100 200 300 400 500
Qu
a
n
t
i
l
e

Concentration, Micrograms per Liter
Normal Probability Plot

R² = 0.9523
-2.00
-1.50
-1.00
-0.50
0.00
0.50
1.00
1.50
2.00
0.00 2.00 4.00 6.00 8.00
Qu
a
n
t
i
l
e

Log Normal Concentrations
Log Normal Probability Plot

June 2015 4 of 9 0739-603515.100
G:\Projects\Waste Industries\Red Rock\Groundwater\GWMR\March 2015\Stats\Iron Interwell March 2015.xlsx
Project Name:WI - Red Rock
Project No:073-9603515
Date:4/27/15
Determination of reported background value as an outlier
Analyte:Iron
Background Data Quantitation
Concentration Limit
Sample No.Sample Date Location (ug/l)(ug/l)
1 3/21/07 MW-10 20 J 300
2 9/28/07 MW-10 170 300
3 3/25/08 MW-10 242 J 300
4 9/29/08 MW-10 144 J 300
5 3/30/09 MW-10 141 300
6 9/29/09 MW-10 457 300
7 3/30/10 MW-10 79.7 J 300
8 9/29/10 MW-10 23 300
9 4/6/11 MW-10 27.9 300
10 9/28/11 MW-10 36.4 300
11 3/28/12 MW-10 34.7 300
12 9/26/12 MW-10 30 300
13 4/1/13 MW-10 64.5 300
14 9/25/13 MW-10 95.5 300
15 4/1/14 MW-10 150 300
16 9/29/14 MW-10 150 300
17 3/31/15 MW-10 126 300
mean = 117.159
STD = 108.751
Note: All concentrations are micrograms per liter
Using the data listed above, form the statistic Tn:
Tn = (Xn - mean) / STD
where:Xn = largest observed sample value
mean = mean of the background values
STD = standard deviation of the background values
For Xn = 457.000
mean = 117.159
STD = 108.751
Tn = 3.125
From Table 8 included in the Statistical Analysis of Groundwater Monitoring Data at
RCRA Facilities - Interim Final Guidance, the critical value for the given sample group is
Number of samples =17
Tc = 2.475
Since Tc<Tn, the sample result is considered to be an outlier
June 2015 5 of 9 0739-603515.100
G:\Projects\Waste Industries\Red Rock\Groundwater\GWMR\March 2015\Stats\Iron Interwell March 2015.xlsx
Project Name:WI - Red Rock
Project No:073-9603515
Date:4/27/15
Determination of reported background value as an outlier
Analyte:Iron
Background Data Quantitation
ln(Concentration)Limit
Sample No.Sample Date Location (ug/l)(ug/l)
1 3/21/07 MW-10 2.99573 J 300
2 9/28/07 MW-10 5.13580 J 300
3 3/25/08 MW-10 5.48894 J 300
4 9/29/08 MW-10 4.96981 J 300
5 3/30/09 MW-10 4.94876 J 300
6 9/29/09 MW-10 6.12468 300
7 3/30/10 MW-10 4.37827 J 300
8 9/29/10 MW-10 3.13549 J 300
9 4/6/11 MW-10 3.32863 J 300
10 9/28/11 MW-10 3.59457 J 300
11 3/28/12 MW-10 3.54674 J 300
12 9/26/12 MW-10 3.40120 J 300
13 4/1/13 MW-10 4.16667 J 300
14 9/25/13 MW-10 4.55913 J 300
15 4/1/14 MW-10 5.01064 300
16 9/29/14 MW-10 5.01064 300
17 3/31/15 MW-10 4.83628 J 300
mean = 4.39012
STD = 0.91636
Note: All concentrations are micrograms per liter
Using the data listed above, form the statistic Tn:
Tn = (Xn - mean) / STD
where:Xn = largest observed sample value
mean = mean of the background values
STD = standard deviation of the background values
For Xn = 6.125
mean = 4.390
STD = 0.916
Tn = 1.893
From Table 8 included in the Statistical Analysis of Groundwater Monitoring Data at
RCRA Facilities - Interim Final Guidance, the critical value for the given sample group is
Number of samples =17
Tc = 2.475
Since Tc>Tn, the sample result is not considered to be an outlier
June 2015 6 of 9 0739-603515.100
G:\Projects\Waste Industries\Red Rock\Groundwater\GWMR\March 2015\Stats\Iron Interwell March 2015.xlsx
Project Name:WI - Red Rock
Project No:073-9603515
Date:4/27/15
Shapiro Wilk Test Statistic (W) for normality of total Iron
Complete the following table where
i = ordered value of sample, arranged from smallest to largest
X(i) = sample values arranged from smallest to largest
X(n-i+1) = sample values arranged from largest to smallest
A(n-i+1) = coefficient from table A-1, Statistical Analysis of Ground-Water
Data at RCRA Facilities
B(i) = summation of (X(n-i+1)-X(i))A(n-i+1)
i X(i)X(n-i+1)X(n-i+1) - X(i)A(n-i+1)B(i)
1 20.00 457.00 437 0.4958 216.66
2 23.00 242.00 219 0.3273 71.68
3 27.90 170.00 142.1 0.254 36.09
4 30.00 150.00 120 0.1988 23.86
5 34.70 150.00 115.3 0.1524 17.57
6 36.40 144.00 107.6 0.1109 11.93
7 64.50 141.00 76.5 0.0725 5.55
8 79.70 126.00 46.3 0.0359 1.66
9 95.50 95.50 0 0 0.00
10 126.00 79.70
11 141.00 64.50
12 144.00 36.40
13 150.00 34.70
14 150.00 30.00
15 170.00 27.90
16 242.00 23.00
17 457.00 20.00
The test statistic W can be found using:
W = SQR[B/(SD x SQRT(n-1))]
where:B = summation of (X(n-i+1)-X(i))A(n-i+1)=385.01
SD = standard deviation of the data group =108.75
n = number of samples =17
W =0.783
Compare this value to the critical value in Table A-2 of Statistical Analysisof Ground-Water
Monitoring Data at RCRA Facilities, Addendum to Interim Final Guidance (Draft)
July, 1992, to determine if the data is normally distributed.
From Table A-2 with (n) samples and a 95% confidence level, the critical value is
W(crit) = 0.892
and the calculated W = 0.783
Therefore the data is Non Normal
June 2015 7 of 9 0739-603515.100
G:\Projects\Waste Industries\Red Rock\Groundwater\GWMR\March 2015\Stats\Iron Interwell March 2015.xlsx
Project Name:WI - Red Rock
Project No:073-9603515
Date:4/27/15
Shapiro Wilk Test Statistic (W) for log normality of Iron
Complete the following table where
i = ordered value of sample, arranged from smallest to largest
X(i) = sample values arranged from smallest to largest
X(n-i+1) = sample values arranged from largest to smallest
A(n-i+1) = coefficient from table A-1, Statistical Analysis of Ground-Water
Data at RCRA Facilities
B(i) = summation of (X(n-i+1)-X(i))A(n-i+1)
i X(i)X(n-i+1)X(n-i+1) - X(i)A(n-i+1)B(i)
1 3.00 6.12 3.1290 0.4958 1.5513
2 3.14 5.49 2.3534 0.3273 0.7703
3 3.33 5.14 1.8072 0.2540 0.4590
4 3.40 5.01 1.6094 0.1988 0.3200
5 3.55 5.01 1.4639 0.1524 0.2231
6 3.59 4.97 1.3752 0.1109 0.1525
7 4.17 4.95 0.7821 0.0725 0.0567
8 4.38 4.84 0.4580 0.0359 0.0164
9 4.56 4.56 0.0000 0.0000 0.0000
10 4.84 4.38
11 4.95 4.17
12 4.97 3.59
13 5.01 3.55
14 5.01 3.40
15 5.14 3.33
16 5.49 3.14
17 6.12 3.00
The test statistic W can be found using:
W = SQR((B/SD x SQRT(n-1))
where:B = summation of (X(n-i+1)-X(i))A(n-i+1)=3.5494
SD = standard deviation of the data group =0.9164
n = number of samples =17
W =0.9377
Compare this value to the critical value in Table A-2 of Statistical Analysisof Ground-Water
Monitoring Data at RCRA Facilities, Addendum to Interim Final Guidance (Draft)
July, 1992, to determine if the data is normally distributed.
From Table A-2 with (n) samples and a 95% confidence level, the critical value is
W(crit) = 0.892
and the calculated W = 0.938
Therefore the data set is Log Normal
June 2015 8 of 9 0739-603515.100
G:\Projects\Waste Industries\Red Rock\Groundwater\GWMR\March 2015\Stats\Iron Interwell March 2015.xlsx
Project Name:WI - Red Rock
Project No:073-9603515
Date:4/27/15
Parametric Prediction Interval for log normally distributed data
Analyte:Iron
Background Data
Concentration Natural Log
Sample No.Sample Date Location (ug/l)Concentration
1 3/21/07 MW-10 20 2.996
2 9/28/07 MW-10 170 5.136
3 3/25/08 MW-10 242 5.489
4 9/29/08 MW-10 144 4.970
5 3/30/09 MW-10 141 4.949
6 9/29/09 MW-10 457 6.125
7 3/30/10 MW-10 80 4.378
8 9/29/10 MW-10 23 3.135
9 4/6/11 MW-10 28 3.329
10 9/28/11 MW-10 36 3.595
11 3/28/12 MW-10 35 3.547
12 9/26/12 MW-10 30 3.401
13 4/1/13 MW-10 65 4.167
14 9/25/13 MW-10 96 4.559
15 4/1/14 MW-10 150 5.011
16 9/29/14 MW-10 150 5.011
17 3/31/15 MW-10 126 4.836
Note: All sample concentrations are micrograms per liter
Using the background data, the upper Prediction Limit can be determined using:
Upper Prediction Limit = antilog((Mean Conc) + t(n-1,k,.95) x (Std Dev) x SQRT(1/m+1/n))
where:Mean Conc = mean concentration background samples
t(n-1k,.95) = Bonferroni t-statistic with
n-1 = degrees of freedom (number of samples - 1)
k = number of downgradient samples per event
.95 = confidence interval
Std Dev = standard deviation of background samples
m = number independent samples from each sampling point
n = number of background samples
For:Mean Conc = 4.390
Std Dev = 0.916
t(n-1,k,.95)*sqrt(1/m+1/n) = 2.680
k = 7
m =1
n =17
Antilog UPL = 940 ug/L
June 2015 9 of 9 0739-603515.100
G:\Projects\Waste Industries\Red Rock\Groundwater\GWMR\March 2015\Stats\Iron Interwell March 2015.xlsx
Project Name:WI - Red Rock
Project No:073-9603515
Date:4/27/15
Parametric Tolerance Interval for log normally distributed data
Analyte:Iron
Background Data Quantitation
Concentration Limit Natural Log
Sample No.Sample Date Location (ug/l)(ug/l)Concentration
1 3/21/07 MW-10 20 300 2.996
2 9/28/07 MW-10 170 300 5.136
3 3/25/08 MW-10 242 300 5.489
4 9/29/08 MW-10 144 300 4.970
5 3/30/09 MW-10 141 300 4.949
6 9/29/09 MW-10 457 300 6.125
7 3/30/10 MW-10 79.7 300 4.378
8 9/29/10 MW-10 23 300 3.135
9 4/6/11 MW-10 27.9 300 3.329
10 9/28/11 MW-10 36.4 300 3.595
11 3/28/12 MW-10 34.7 300 3.547
12 9/26/12 MW-10 30 300 3.401
13 4/1/13 MW-10 64.5 300 4.167
14 9/25/13 MW-10 95.5 300 4.559
15 4/1/14 MW-10 150 300 5.011
16 9/29/14 MW-10 150 300 5.011
17 3/31/15 MW-10 126 300 4.836
Note: All sample concentrations are micrograms per liter
Using the background data, the upper Tolerance Limit can be determined using:
Upper Tolerance Limit = antilog((Mean Concentration)+K x (Standard Deviation Samples))
where:Mean Conc = mean concentration background samples
K = factor for constructing one sided normal tolerance limit
taken from table 4-2, page 87, Statistical Methods for Groundwater
Monitoring, Gibbons, 1994
STDS = Standard Deviation Samples
n = number of background samples
For:n = 17
K = 2.486
Mean Conc = 4.390
STDS = 0.916
UTL = 787 ug/L
June 2015 1 of 7 0739-603515.100
G:\Projects\Waste Industries\Red Rock\Groundwater\GWMR\March 2015\Stats\Iron MW-6T Intrawell March 2015.xlsx
Project Name:WI - Red Rock
Project No:073-9603515
Date:4/30/15
Analyte:Iron (MW-6T Intrawell)Quantitation
Concentration Limit
Sample No.Sample Date Location (ug/L)(ug/L)
1 3/21/2007 MW-6T ND 300
2 9/28/2007 MW-6T ND 300
3 3/25/2008 MW-6T ND 300
4 9/29/2008 MW-6T 480 300
5 3/30/2009 MW-6T 1030 300
6 9/29/2009 MW-6T 1510 300
7 3/30/2010 MW-6T 959 300
8 9/29/2010 MW-6T 590 300
9 4/6/2011 MW-6T 990 300
10 9/28/2011 MW-6T 1080 300
11 3/28/2012 MW-6T 1010 300
12 9/26/2012 MW-6T 1110 300
13 4/1/2013 MW-6T 1020 300
14 9/25/2013 MW-6T 1020 300
15 4/1/2014 MW-6T 980 300
16 9/29/2014 MW-6T 1040 300
Number of Data 16
Number of Truncated Data 3
Percentage of Truncated Data 19%
Nonparametric Prediction Interval: 1510 ug/L
June 2015 2 of 7 0739-603515.100
G:\Projects\Waste Industries\Red Rock\Groundwater\GWMR\March 2015\Stats\Iron MW-6T Intrawell March 2015.xlsx
Project Name:WI - Red Rock
Project No:073-9603515
Date:4/30/15
Probability Plots to determine the distribution of Iron (MW-6T Intrawell)
Complete the following table where:
i = ordered value of sample, arranged from smallest to largest
X(i) = sample values arranged from smallest to largest
LN[X(i)] = Natural Log Value of sample concentrations arranged from
smallest to largest
[i/(n+1)] = Cumulative probability
n = number of samples = 13
X(i)LN[X(i)]i Rank [Rank/(n+1)]Quantiles
480 6.17 1 1 0.071 -1.47
590 6.38 2 2 0.143 -1.07
959 6.87 3 3 0.214 -0.79
980 6.89 4 4 0.286 -0.57
990 6.90 5 5 0.357 -0.37
1010 6.92 6 6 0.429 -0.18
1020 6.93 7 7 0.500 0.00
1020 6.93 8 8 0.571 0.18
1030 6.94 9 9 0.643 0.37
1040 6.95 10 10 0.714 0.57
1080 6.98 11 11 0.786 0.79
1110 7.01 12 12 0.857 1.07
1510 7.32 13 13 0.929 1.47
June 2015 3 of 7 0739-603515.100
G:\Projects\Waste Industries\Red Rock\Groundwater\GWMR\March 2015\Stats\Iron MW-6T Intrawell March 2015.xlsx
Project Name:WI - Red Rock
Project No:073-9603515
Date:04/30/15
Probability Plots to determine the distribution of Iron (MW-6T Intrawell)
R² = 0.771
-2.00
-1.50
-1.00
-0.50
0.00
0.50
1.00
1.50
2.00
0 500 1000 1500 2000
Qu
a
n
t
i
l
e

Concentration, Micrograms per Liter
Normal Probability Plot
lead Concentrations
R² = 0.7238
-2.00
-1.50
-1.00
-0.50
0.00
0.50
1.00
1.50
2.00
6.00 6.50 7.00 7.50
Qu
a
n
t
i
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e

Log Normal Concentrations
Log Normal Probability Plot Lead Concentrations
June 2015 4 of 7 0739-603515.100
G:\Projects\Waste Industries\Red Rock\Groundwater\GWMR\March 2015\Stats\Iron MW-6T Intrawell March 2015.xlsx
Project Name:WI - Red Rock
Project No:073-9603515
Date:4/30/15
Determination of reported background value as an outlier
Analyte:Iron (MW-6T Intrawell)
Background Data Quantitation
Concentration Limit
Sample No.Sample Date Location (ug/l)(ug/l)
1 3/21/07 MW-6T ND 300
2 9/28/07 MW-6T ND 300
3 3/25/08 MW-6T ND 300
4 9/29/08 MW-6T 480 300
5 3/30/09 MW-6T 1030 300
6 9/29/09 MW-6T 1510 300
7 3/30/10 MW-6T 959 300
8 9/29/10 MW-6T 590 300
9 4/6/11 MW-6T 990 300
10 9/28/11 MW-6T 1080 300
11 3/28/12 MW-6T 1010 300
12 9/26/12 MW-6T 1110 300
13 4/1/13 MW-6T 1020 300
14 9/25/13 MW-6T 1020 300
15 4/1/14 MW-6T 980 300
16 9/29/14 MW-6T 1040 300
mean = 986.077
STD = 244.976
Note: All concentrations are micrograms per liter
Using the data listed above, form the statisitc Tn:
Tn = (Xn - mean) / STD
where:Xn = largest observed sample value
mean = mean of the background values
STD = standard deviation of the background values
For Xn = 1510.000
mean = 986.077
STD = 244.976
Tn = 2.139
From Table 8 included in the Staistical Analysis of Groundwater Monitoring Data at
RCRA Facilities - Interim Final Guidance, the critical value for the given sample group is
Number of samples =16
Tc = 2.443
Since Tc>Tn, the sample result is not considered to be an outlier
June 2015 5 of 7 0739-603515.100
G:\Projects\Waste Industries\Red Rock\Groundwater\GWMR\March 2015\Stats\Iron MW-6T Intrawell March 2015.xlsx
Project Name:WI - Red Rock
Project No:073-9603515
Date:4/30/15
Determination of reported background value as an outlier
Analyte:Iron (MW-6T Intrawell)
Background Data Quantitation
ln(Concentration)Limit
Sample No.Sample Date Location (ug/l)(ug/l)
1 3/21/07 MW-6T ND 300
2 9/28/07 MW-6T ND 300
3 3/25/08 MW-6T ND 300
4 9/29/08 MW-6T 6.17379 300
5 3/30/09 MW-6T 6.93731 300
6 9/29/09 MW-6T 7.31986 300
7 3/30/10 MW-6T 6.86589 300
8 9/29/10 MW-6T 6.38012 300
9 4/6/11 MW-6T 6.89770 300
10 9/28/11 MW-6T 6.98472 300
11 3/28/12 MW-6T 6.91771 300
12 9/26/12 MW-6T 7.01212 300
13 4/1/13 MW-6T 6.92756 300
14 9/25/13 MW-6T 6.92756 300
15 4/1/14 MW-6T 6.88755 300
16 9/29/14 MW-6T 6.94698 300
mean = 6.85991
STD = 0.28571
Note: All concentrations are micrograms per liter
Using the data listed above, form the statisitc Tn:
Tn = (Xn - mean) / STD
where:Xn = largest observed sample value
mean = mean of the background values
STD = standard deviation of the background values
For Xn = 7.320
mean = 6.860
STD = 0.286
Tn = 1.610
From Table 8 included in the Staistical Analysis of Groundwater Monitoring Data at
RCRA Facilities - Interim Final Guidance, the critical value for the given sample group is
Number of samples =16
Tc = 2.443
Since Tc>Tn, the sample result is not considered to be an outlier
June 2015 6 of 7 0739-603515.100
G:\Projects\Waste Industries\Red Rock\Groundwater\GWMR\March 2015\Stats\Iron MW-6T Intrawell March 2015.xlsx
Project Name:WI - Red Rock
Project No:073-9603515
Date:4/30/15
Shapiro Wilk Test Statistic (W) for normality of total Iron (MW-6T Intrawell)
Complete the following table where
i = ordered value of sample, arranged from smallest to largest
X(i) = sample values arranged from smallest to largest
X(n-i+1) = sample values arranged from largest to smallest
A(n-i+1) = coefficient from table A-1, Statistical Analysis of Ground-Water
Data at RCRA Facilities
B(i) = summation of (X(n-i+1)-X(i))A(n-i+1)
i X(i)X(n-i+1)X(n-i+1) - X(i)A(n-i+1)B(i)
1 480.00 1510.00 1030 0.5359 551.98
2 590.00 1110.00 520 0.3325 172.90
3 959.00 1080.00 121 0.2412 29.19
4 980.00 1040.00 60 0.1707 10.24
5 990.00 1030.00 40 0.1099 4.40
6 1010.00 1020.00 10 0.0539 0.54
7 1020.00 1020.00 0 0 0.00
8 1020.00 1010.00
9 1030.00 990.00
10 1040.00 980.00
11 1080.00 959.00
12 1110.00 590.00
13 1510.00 480.00
The test statistic W can be found using:
W = SQR[B/(SD x SQRT(n-1))]
where:B = summation of (X(n-i+1)-X(i))A(n-i+1)=769.24
SD = standard deviation of the data group =244.98
n = number of samples =13
W =0.822
Compare this value to the critical value in Table A-2 of Statistical Analysisof Ground-Water
Monitoring Data at RCRA Facilities, Addendum to Interim Final Guidance (Draft)
July, 1992, to determine if the data is normally distributed.
From Table A-2 with (n) samples and a 95% confidence level, the critical value is
W(crit) = 0.866
and the calculated W = 0.822
Therefore the data is Non Normal
June 2015 7 of 7 0739-603515.100
G:\Projects\Waste Industries\Red Rock\Groundwater\GWMR\March 2015\Stats\Iron MW-6T Intrawell March 2015.xlsx
Project Name:WI - Red Rock
Project No:073-9603515
Date:4/30/15
Shapiro Wilk Test Statistic (W) for log normality of Iron (MW-6T Intrawell)
Complete the following table where
i = ordered value of sample, arranged from smallest to largest
X(i) = sample values arranged from smallest to largest
X(n-i+1) = sample values arranged from largest to smallest
A(n-i+1) = coefficient from table A-1, Statistical Analysis of Ground-Water
Data at RCRA Facilities
B(i) = summation of (X(n-i+1)-X(i))A(n-i+1)
i X(i)X(n-i+1)X(n-i+1) - X(i)A(n-i+1)B(i)
1 6.17 7.32 1.1461 0.5359 0.6142
2 6.38 7.01 0.6320 0.3325 0.2101
3 6.87 6.98 0.1188 0.2412 0.0287
4 6.89 6.95 0.0594 0.1707 0.0101
5 6.90 6.94 0.0396 0.1099 0.0044
6 6.92 6.93 0.0099 0.0539 0.0005
7 6.93 6.93 0.0000 0.0000 0.0000
8 6.93 6.92
9 6.94 6.90
10 6.95 6.89
11 6.98 6.87
12 7.01 6.38
13 7.32 6.17
The test statistic W can be found using:
W = SQR((B/SD x SQRT(n-1))
where:B = summation of (X(n-i+1)-X(i))A(n-i+1)=0.8680
SD = standard deviation of the data group =0.2857
n = number of samples =13
W =0.7692
Compare this value to the critical value in Table A-2 of Statistical Analysisof Ground-Water
Monitoring Data at RCRA Facilities, Addendum to Interim Final Guidance (Draft)
July, 1992, to determine if the data is normally distributed.
From Table A-2 with (n) samples and a 95% confidence level, the critical value is
W(crit) = 0.866
and the calculated W = 0.769
Therefore the data is Non Normal
June 2015 1 of 8 0739-603515.100
G:\Projects\Waste Industries\Red Rock\Groundwater\GWMR\March 2015\Stats\Manganese Interwell March 2015.xlsx
Project Name:WI - Red Rock
Project No:073-9603515
Date:4/27/15
Analyte:Manganese Quantitation
Concentration Limit
Sample No.Sample Date Location (ug/L)(ug/L)
1 03/21/07 MW-10 166 50
2 09/28/07 MW-10 251 50
3 03/25/08 MW-10 508 50
4 09/29/08 MW-10 1050 50
5 03/30/09 MW-10 215 50
6 09/29/09 MW-10 1130 50
7 03/30/10 MW-10 144 50
8 09/29/10 MW-10 913 50
9 04/06/11 MW-10 377 50
10 09/28/11 MW-10 1550 50
11 03/28/12 MW-10 470 50
12 09/26/12 MW-10 1430 50
13 04/01/13 MW-10 255 50
14 09/25/13 MW-10 1030 50
15 04/01/14 MW-10 118 50
16 09/29/14 MW-10 1530 50
17 03/31/15 MW-10 130 50
Number of Data 17
Number of Truncated Data 0
Percentage of Truncated Data 0%
Upper Prediction Interval: 5616 ug/L
June 2015 2 of 8 0739-603515.100
G:\Projects\Waste Industries\Red Rock\Groundwater\GWMR\March 2015\Stats\Manganese Interwell March 2015.xlsx
Project Name:WI - Red Rock
Project No:073-9603515
Date:4/27/15
Probability Plots to determine the distribution of Manganese
Complete the following table where:
i = ordered value of sample, arranged from smallest to largest
X(i) = sample values arranged from smallest to largest
LN[X(i)] = Natural Log Value of sample concentrations arranged from
smallest to largest
[i/(n+1)] = Cumulative probability
n = number of samples = 17
X(i)LN[X(i)]i Rank [Rank/(n+1)]Quantiles
118 4.77 1 1 0.056 -1.59
130 4.87 2 2 0.111 -1.22
144 4.97 3 3 0.167 -0.97
166 5.11 4 4 0.222 -0.76
215 5.37 5 5 0.278 -0.59
251 5.53 6 6 0.333 -0.43
255 5.54 7 7 0.389 -0.28
377 5.93 8 8 0.444 -0.14
470 6.15 9 9 0.500 0.00
508 6.23 10 10 0.556 0.14
913 6.82 11 11 0.611 0.28
1030 6.94 12 12 0.667 0.43
1050 6.96 13 13 0.722 0.59
1130 7.03 14 14 0.778 0.76
1430 7.27 15 15 0.833 0.97
1530 7.33 16 16 0.889 1.22
1550 7.35 17 17 0.944 1.59
June 2015 3 of 8 0739-603515.100
G:\Projects\Waste Industries\Red Rock\Groundwater\GWMR\March 2015\Stats\Manganese Interwell March 2015.xlsx
Project Name:WI - Red Rock
Project No:073-9603515
Date:04/27/15
Probability Plots to determine the distribution of Manganese
R² = 0.8877
-2.00
-1.50
-1.00
-0.50
0.00
0.50
1.00
1.50
2.00
0 500 1000 1500 2000
Qu
a
n
t
i
l
e

Concentration, Micrograms per Liter
Normal Probability Plot
Manganese Concentrations
R² = 0.9389
-2.00
-1.50
-1.00
-0.50
0.00
0.50
1.00
1.50
2.00
0.00 2.00 4.00 6.00 8.00
Qu
a
n
t
i
l
e

Log Normal Concentrations
Log Normal Probability Plot Manganese Concentrations
June 2015 4 of 8 0739-603515.100
G:\Projects\Waste Industries\Red Rock\Groundwater\GWMR\March 2015\Stats\Manganese Interwell March 2015.xlsx
Project Name:WI - Red Rock
Project No:073-9603515
Date:4/27/15
Determination of reported background value as an outlier
Analyte:Manganese
Background Data Quantitation
Concentration Limit
Sample No.Sample Date Location (ug/l)(ug/l)
1 3/21/07 MW-10 166 50
2 9/28/07 MW-10 251 50
3 3/25/08 MW-10 508 50
4 9/29/08 MW-10 1050 50
5 3/30/09 MW-10 215 50
6 9/29/09 MW-10 1130 50
7 3/30/10 MW-10 144 50
8 9/29/10 MW-10 913 50
9 4/6/11 MW-10 377 50
10 9/28/11 MW-10 1550 50
11 3/28/12 MW-10 470 50
12 9/26/12 MW-10 1430 50
13 4/1/13 MW-10 255 50
14 9/25/13 MW-10 1030 50
15 4/1/14 MW-10 118 50
16 9/29/14 MW-10 1530 50
17 3/31/15 MW-10 130 50
mean = 662.765
STD = 528.516
Note: All concentrations are micrograms per liter
Using the data listed above, form the statistic Tn:
Tn = (Xn - mean) / STD
where:Xn = largest observed sample value
mean = mean of the background values
STD = standard deviation of the background values
For Xn = 1550.000
mean = 662.765
STD = 528.516
Tn = 1.679
From Table 8 included in the Statistical Analysis of Groundwater Monitoring Data at
RCRA Facilities - Interim Final Guidance, the critical value for the given sample group is
Number of samples =17
Tc = 2.475
Since Tc>Tn, the sample result is not considered to be an outlier
June 2015 5 of 8 0739-603515.100
G:\Projects\Waste Industries\Red Rock\Groundwater\GWMR\March 2015\Stats\Manganese Interwell March 2015.xlsx
Project Name:WI - Red Rock
Project No:073-9603515
Date:4/27/15
Shapiro Wilk Test Statistic (W) for normality of total Manganese
Complete the following table where
i = ordered value of sample, arranged from smallest to largest
X(i) = sample values arranged from smallest to largest
X(n-i+1) = sample values arranged from largest to smallest
A(n-i+1) = coefficient from table A-1, Statistical Analysis of Ground-Water
Data at RCRA Facilities
B(i) = summation of (X(n-i+1)-X(i))A(n-i+1)
i X(i)X(n-i+1)X(n-i+1) - X(i)A(n-i+1)B(i)
1 118.00 1550.00 1432 0.4968 711.42
2 130.00 1530.00 1400 0.3273 458.22
3 144.00 1430.00 1286 0.254 326.64
4 166.00 1130.00 964 0.1988 191.64
5 215.00 1050.00 835 0.1524 127.25
6 251.00 1030.00 779 0.1109 86.39
7 255.00 913.00 658 0.0725 47.71
8 377.00 508.00 131 0.0359 4.70
9 470.00 470.00 0 0 0.00
10 508.00 377.00
11 913.00 255.00
12 1030.00 251.00
13 1050.00 215.00
14 1130.00 166.00
15 1430.00 144.00
16 1530.00 130.00
17 1550.00 118.00
The test statistic W can be found using:
W = SQR[B/(SD x SQRT(n-1))]
where:B = summation of (X(n-i+1)-X(i))A(n-i+1)=1953.98
SD = standard deviation of the data group =528.52
n = number of samples =17
W =0.854
Compare this value to the critical value in Table A-2 of Statistical Analysisof Ground-Water
Monitoring Data at RCRA Facilities, Addendum to Interim Final Guidance (Draft)
July, 1992, to determine if the data is normally distributed.
From Table A-2 with (n) samples and a 95% confidence level, the critical value is
W(crit) = 0.892
and the calculated W = 0.854
Therefore the data is Non Normal
June 2015 6 of 8 0739-603515.100
G:\Projects\Waste Industries\Red Rock\Groundwater\GWMR\March 2015\Stats\Manganese Interwell March 2015.xlsx
Project Name:WI - Red Rock
Project No:073-9603515
Date:4/27/15
Shapiro Wilk Test Statistic (W) for log normality of Manganese
Complete the following table where
i = ordered value of sample, arranged from smallest to largest
X(i) = sample values arranged from smallest to largest
X(n-i+1) = sample values arranged from largest to smallest
A(n-i+1) = coefficient from table A-1, Statistical Analysis of Ground-Water
Data at RCRA Facilities
B(i) = summation of (X(n-i+1)-X(i))A(n-i+1)
i X(i)X(n-i+1)X(n-i+1) - X(i)A(n-i+1)B(i)
1 4.77 7.35 2.5753 0.4968 1.2794
2 4.87 7.33 2.4655 0.3273 0.8070
3 4.97 7.27 2.2956 0.2540 0.5831
4 5.11 7.03 1.9180 0.1988 0.3813
5 5.37 6.96 1.5859 0.1524 0.2417
6 5.53 6.94 1.4119 0.1109 0.1566
7 5.54 6.82 1.2755 0.0725 0.0925
8 5.93 6.23 0.2982 0.0359 0.0107
9 6.15 6.15 0.0000 0.0000 0.0000
10 6.23 5.93
11 6.82 5.54
12 6.94 5.53
13 6.96 5.37
14 7.03 5.11
15 7.27 4.97
16 7.33 4.87
17 7.35 4.77
The test statistic W can be found using:
W = SQR((B/SD x SQRT(n-1))
where:B = summation of (X(n-i+1)-X(i))A(n-i+1)=3.5522
SD = standard deviation of the data group =0.9352
n = number of samples =17
W =0.9017
Compare this value to the critical value in Table A-2 of Statistical Analysisof Ground-Water
Monitoring Data at RCRA Facilities, Addendum to Interim Final Guidance (Draft)
July, 1992, to determine if the data is normally distributed.
From Table A-2 with (n) samples and a 95% confidence level, the critical value is
W(crit) = 0.892
and the calculated W = 0.902
Therefore the data set is Log Normal
June 2015 7 of 8 0739-603515.100
G:\Projects\Waste Industries\Red Rock\Groundwater\GWMR\March 2015\Stats\Manganese Interwell March 2015.xlsx
Project Name:WI - Red Rock
Project No:073-9603515
Date:4/27/15
Parametric Prediction Interval for log normally distributed data
Analyte:Iron
Background Data
Concentration Natural Log
Sample No.Sample Date Location (ug/l)Concentration
1 3/21/07 MW-10 166 5.112
2 9/28/07 MW-10 251 5.525
3 3/25/08 MW-10 508 6.230
4 9/29/08 MW-10 1050 6.957
5 3/30/09 MW-10 215 5.371
6 9/29/09 MW-10 1130 7.030
7 3/30/10 MW-10 144 4.970
8 9/29/10 MW-10 913 6.817
9 4/6/11 MW-10 377 5.932
10 9/28/11 MW-10 1550 7.346
11 3/28/12 MW-10 470 6.153
12 9/26/12 MW-10 1430 7.265
13 4/1/13 MW-10 255 5.541
14 9/25/13 MW-10 1030 6.937
15 4/1/14 MW-10 118 4.771
16 9/29/14 MW-10 1530 7.333
17 3/31/15 MW-10 130 4.868
Note: All sample concentrations are micrograms per liter
Using the background data, the upper Prediction Limit can be determined using:
Upper Prediction Limit = antilog((Mean Conc) + t(n-1,k,.95) x (Std Dev) x SQRT(1/m+1/n))
where:Mean Conc = mean concentration background samples
t(n-1k,.95) = Bonferroni t-statistic with
n-1 = degrees of freedom (number of samples - 1)
k = number of downgradient samples per event
.95 = confidence interval
Std Dev = standard deviation of background samples
m = number independent samples from each sampling point
n = number of background samples
For:Mean Conc = 6.127
Std Dev = 0.935
t(n-1,k,.95)*sqrt(1/m+1/n) = 2.680
k = 7
m =1
n =17
Antilog UPL = 5616 ug/L
June 2015 8 of 8 0739-603515.100
G:\Projects\Waste Industries\Red Rock\Groundwater\GWMR\March 2015\Stats\Manganese Interwell March 2015.xlsx
Project Name:WI - Red Rock
Project No:073-9603515
Date:4/27/15
Parametric Tolerance Interval for log normally distributed data
Analyte:Iron
Background Data Quantitation
Concentration Limit Natural Log
Sample No.Sample Date Location (ug/l)(ug/l)Concentration
1 3/21/07 MW-10 166 50 5.112
2 9/28/07 MW-10 251 50 5.525
3 3/25/08 MW-10 508 50 6.230
4 9/29/08 MW-10 1050 50 6.957
5 3/30/09 MW-10 215 50 5.371
6 9/29/09 MW-10 1130 50 7.030
7 3/30/10 MW-10 144 50 4.970
8 9/29/10 MW-10 913 50 6.817
9 4/6/11 MW-10 377 50 5.932
10 9/28/11 MW-10 1550 50 7.346
11 3/28/12 MW-10 470 50 6.153
12 9/26/12 MW-10 1430 50 7.265
13 4/1/13 MW-10 255 50 5.541
14 9/25/13 MW-10 1030 50 6.937
15 4/1/14 MW-10 118 50 4.771
16 9/29/14 MW-10 1530 50 7.333
17 3/31/15 MW-10 130 50 4.868
Note: All sample concentrations are micrograms per liter
Using the background data, the upper Tolerance Limit can be determined using:
Upper Tolerance Limit = antilog((Mean Concentration)+K x (Standard Deviation Samples))
where:Mean Conc = mean concentration background samples
K = factor for constructing one sided normal tolerance limit
taken from table 4-2, page 87, Statistical Methods for Groundwater
Monitoring, Gibbons, 1994
STDS = Standard Deviation Samples
n = number of background samples
For:n = 17
K = 2.486
Mean Conc = 6.127
STDS = 0.935
UTL = 4684 ug/L

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