SW_F_3201-MSWLF-1979_11-28-2011_EA_AM.pdf

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SECOND SEMI-ANNUAL 2011
SAMPLING EVENT
Closed City of Durham Landfill
Permit No. 32-01
Durham County, North Carolina

Submitted To:

City of Durham
Department of Water Management
1600 Mist Lake Drive
Durham, North Carolina 27704

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

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Mr. Ervin Lane, Hydrogeologist April16, 2012
NCDENR DWM Division of Waste Management 3 0739-9504211.100

C: Simon Lobdell, Civil Engineer III, City of Durham, 1600 Mist Lake Drive Durham, NC 27704.
919-560-4381. [e-mail]
Chris Marriott, Waste Disposal Manager, City of Durham, 1833 Camden Avenue, Durham, NC
32253. 919-560-4186. [e-mail]
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Table of Contents
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 ............................................... 4
2.1 Visual Inspection Program ........................................................................................................... 4
2.2 Well Network and Groundwater Elevation Measurements .......................................................... 4
2.3 November 2011 Groundwater Monitoring Event.......................................................................... 4
2.4 Laboratory Analysis Program ....................................................................................................... 5
2.5 November 2011 Sampling Results .............................................................................................. 5
3.0 LABORATORY AND FIELD QA/QC ................................................................................................ 6
4.0 DATA EVALUATION ........................................................................................................................ 6
4.1 Statistical Evaluations .................................................................................................................. 7
4.2 North Carolina Groundwater and Surface Water Quality Standard Comparisons ....................... 6
5.0 CONCLUSIONS ............................................................................................................................... 7
6.0 REFERENCES ................................................................................................................................. 7

List of Tables
Table 1 Summary of Historical Groundwater Elevation Data in Monitoring Wells
Table 2 Summary of Estimated Horizontal Flow Velocities
Table 3 Summary of Well Construction Information
Table 4 Summary of Detected Constituents in Groundwater
Table 5 Summary of Surface Water Monitoring Results

List of Drawings
Drawing 1 Groundwater Contour Map, November 28, 2011

List of Appendices
Appendix A Groundwater and Surface Water Sampling Logs
Appendix B November 2011 Groundwater Certificate-of-Analysis, Chain of Custody Form(s), and
Laboratory Data Review
Appendix C Statistical Evaluation Summary Table and Worksheets

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1.0 INTRODUCTION
This report summarizes the monitoring results from the November 28, 2011, groundwater and surface
water sampling and analysis event at the closed City of Durham Landfill in Durham County, North
Carolina in accordance with Title 15A of the North Carolina Administrative Code (NCAC) Subchapter
13B.1632. The City of Durham Landfill is a closed Municipal Solid Waste Landfill (MSWL) and is
maintained by the City under Permit No. 32-01 issued by the North Carolina Department of Environment
and Natural Resources (DENR).
Groundwater beneath the landfill is currently monitored by six groundwater compliance wells and four
surface water monitoring points. The City is currently evaluating the source of organic constituents in
monitoring well MW-10.
1.1 Site Description and Background
The subject property is a closed, unlined municipal solid waste landfill that ceased waste acceptance in
1997. The location of the facility is shown on the inlay on Drawing 1. As presented, the closed City of
Durham Landfill is located northeast of downtown Durham, off East Club Boulevard and southwest of
Falls Lake.
Topographic elevations at the facility range from approximately 280 to 400 feet above mean sea level. In
general, surface drainage from the facility and surrounding areas is routed by drainage channels and
storm water control structures toward Ellerbee Creek to the west of the facility. Locally, surface water
flows radially away from the closed and capped landfill toward unnamed streams to the northeast, south
and west. These streams are tributaries of Ellerbe Creek, which flows into Falls Lake, located northeast
of the landfill.
1.2 Compliance Monitoring History
Groundwater quality at the landfill has been monitored since 1989, beginning with annual monitoring, and
is currently monitored semi-annually in accordance with the approved Water Quality Monitoring Plan
(WQMP) prepared by Malcolm Pirnie, Inc. in April 1994.
Assessment Monitoring was conducted at the landfill from November 1996 through June 1999 due to the
detection of benzene in monitoring well MW-3. Following the June 1999 monitoring event, DENR granted
approval for the City to return to Detection Monitoring. Detection Monitoring was conducted at the site
from October 1999 through December 2004. However, based on additional detections of volatile organic
compounds (VOCs), the landfill returned to Assessment Monitoring during the June 2005 monitoring
event (Weston Solutions, 2006).

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In May 2008, monitoring well PZ-6 was replaced by monitoring well MW-9R as the up-
gradient/background monitoring well due to the poor water quality and elevated metals concentrations
detected in PZ-6. Also in May 2008, monitoring well MW-3 was replaced by MW-3R as a downgradient
compliance monitoring well and MW-6R was replaced by MW-10 as a down-gradient monitoring well.
Both MW-3 and MW-6R were determined to be located within or in close proximity to the landfill waste
boundary.
As previously stated, the City is currently in the process of completing a NES in response to the
concentrations of detected NC Appendix I constituents above their respective groundwater protection
standards in monitoring wells MW-5 and MW-10. As part of this assessment seven temporary
piezometers and three stream gauges were installed in the vicinity of MW-10. One of the piezometers
installed as part of the NES (NES-3) was sampled during the November 2010 semi-annual sampling
event to establish a water quality baseline for the possible replacement of compliance well MW-10.
On January 21, 2011, MW-11 was installed in the area beyond the waste boundary near MW-5. MW-11
was installed as a possible replacement for the down-gradient compliance well MW-5, due to the
historical detections of barium above the NC 2L Drinking Water Standard. A letter report documenting
the installation of MW-11 was prepared by S&ME and was submitted as part of the May 2011 water
quality report. At the time of the November 2011 sampling event, MW-11 had not been approved to
replace MW-5 as a down-gradient compliance monitoring well and therefore no sample was collected.
On May 12, 2011, S&ME submitted a request to the NC DENR to reduce the number of up-gradient
monitoring wells from the semi-annual sampling schedule. On May 17, 2011, NC DENR granted
approval to remove monitoring wells MW-7R and MW-8 from the compliance well sampling list.
The current approved facility monitoring network consists of one upgradient/background monitoring well
(MW-9R) and five downgradient compliance monitoring wells (MW-2, MW-3R, MW-4R, MW-5, and
MW-10) which monitor the uppermost aquifer. Groundwater samples are typically analyzed for the NC
Appendix II list during the spring events and for the NC Appendix I plus detected NC Appendix II
constituents during the fall events. The facility’s monitoring network also includes one upstream surface
water monitoring point (S-4) and three downstream surface water monitoring points (S-1, S-2 and S-3),
which are sampled in conjunction with the groundwater monitoring wells. Surface water samples are
analyzed semi-annually for NC Appendix I constituents.
1.3 Hydrogeologic Setting
Geologically, the facility is located within the Piedmont Physiographic Province of North Carolina and
within the Durham Basin (NCGS, 1985). The Durham Basin is comprised of Triassic sedimentary rocks

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including sandstones, mudstones, conglomerates and unconsolidated sediments occurring from the
erosion of adjoining Paleozoic metamorphic rocks of the Raleigh Belt (Weston Solutions, 2006).
The uppermost aquifer beneath the facility is comprised of saprolite and weathered rock, which transitions
into bedrock. Bedrock consists of arkosic sandstones, siltstones, and mudstones, which comprise the
Pekin Formation. Site monitoring wells are screened in silty sands, silty to sandy clays, and sandstones
of the Chatham Group of the Triassic Formations (Malcolm Pirnie, 1994 and 1996).
The depth to groundwater typically ranges from approximately 4 feet below grade along the western and
southern perimeter of the facility to nearly 50 feet below grade in the central and eastern portion of the
facility. Historical groundwater elevation data are presented on Table 1.
As presented on Table 1, 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 8 feet (plus or
minus) in the up-gradient well, with generally lower variations in the down-gradient wells. As expected,
the range in fluctuation appears to be greater in the area near the up-gradient wells, as these wells are
more centrally located to the regional groundwater recharge area. The range in fluctuation in the down-
gradient compliance wells, which are generally located nearer groundwater discharge areas, is less, likely
due to the stabilizing effect of hydraulic discharge boundaries.
Static water level measurements obtained on November 28, 2011, were used to prepare the groundwater
contours presented on Drawing 1. Groundwater flow across the majority of the site is to the northwest,
west and southwest, which is consistent with previous groundwater contour flow interpretations.
Based on the November 28, 2011, groundwater contour map, the hydraulic gradient in the uppermost
aquifer underlying the site was measured along the conceptual flow paths shown on Drawing 1. As
shown on Table 2, the average hydraulic gradient for the groundwater flow was calculated to be
approximately 0.0243 ft/ft. An estimated effective porosity of 0.2 was used for the uppermost aquifer
(Heath, 2001).
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.

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As shown on Table 2, the average estimated linear groundwater flow velocity under the waste
management unit is approximately 111 feet/year to the northwest, west and southwest, which is generally
consistent with previous estimates. The range of groundwater flow is expected to vary depending on the
hydrogeologic unit in which it occurs. However, 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 November 28, 2011, sampling event are discussed in the
following sections.
2.1 Visual Inspection Program
In order to ensure that a potential release is detected at the earliest possible time, a visual inspection
program is used at the closed City of Durham Landfill. This program includes physical indicators such as
potential water table mounding beneath the waste management unit, physical examination of any
stresses in biological communities, visible signs of leachate migration (i.e., leachate seeps), unexplained
changes in soil characteristics, and any other change to the environment due to the waste management
unit. During the November 2011 compliance monitoring event, no physical indicators were observed in
the vicinity of the waste management areas.
2.2 Well Network and Groundwater Elevation Measurements
The network of groundwater monitoring wells at the closed City of Durham Landfill consists of up-gradient
monitoring well MW-9R and five down-gradient monitoring wells MW-2, MW-3R, MW-4R, MW-5, and
MW-10. Monitoring well construction information is summarized in Table 3 and the well locations are
shown on Drawing 1. The network of monitoring wells was constructed to target the preferential flow path
for groundwater underlying waste disposal areas.
Depth-to-water measurements were recorded to the nearest 0.01 foot prior to initiating groundwater
purging and sampling activities. Additional depth-to-water measurements were collected from MW-6R,
MW-7R, MW-8, NES-3, PZ-2R, PZ-3, PZ-4R, and PZ-6 to assist in constructing the groundwater contour
map for the facility. A summary of measured groundwater elevations for this event are presented in
Table 1.
2.3 November 2011 Groundwater Monitoring Event
Personnel from Golder visited the facility on November 28, 2011, to purge and sample monitoring wells
MW-2, MW-3R, MW-4R, MW-5, MW-9R, and MW-10. In addition to the groundwater samples, surface

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water samples were collected from upstream S-4 and downstream monitoring locations S-2 and S-3.
Downstream surface water point SW-1 was dry during the November 2011 sampling event and therefore,
no sample was collected.
Monitoring wells MW-2, MW-3R, MW-4R, MW-5, MW-9R, and MW-10 were purged and sampled using
dedicated bladder pumps and low-flow micropurge techniques. The surface water samples were
collected directly from the stream flow, by lowering the sample containers into the stream flow with the
opening facing into the current flow, taking care to prevent the over flow of the sample containers and to
minimize sample-induced turbidity. Measurements of temperature, pH, specific conductivity, dissolved
oxygen, oxidation-reduction potential, and turbidity were recorded during the purge and at the time of
sampling.
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 pump tubing in the labeled,
laboratory-supplied, pre-preserved sample containers after purging. 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, field
observations, and water quality measurements.
2.4 Laboratory Analysis Program
The November 2011 groundwater and surface water samples were received by Environmental
Conservation Laboratories, Inc. (ENCO) of Cary, North Carolina on November 29, 2011, under chain-of-
custody control for analysis of NC Appendix I constituents.
2.5 November 2011 Sampling Results
Analytical results for the November 2011 groundwater and surface water samples are summarized in
Tables 4 and 5 with available historical data. The laboratory certificates-of-analysis, chain-of-custody
forms and laboratory data reviews for the sampling event are included in Appendix B.
As presented in Table 4 and the laboratory certificates-of-analysis, two inorganic and five organic
constituents were detected in samples from one or more downgradient monitoring wells at concentrations
above their respective Solid Waste Section Reporting Limits (SWSLs) during the November 2011
sampling event. Barium was detected in the samples from MW-2, MW-3R, MW-4R, MW-5, and MW-10 at
concentrations greater than the SWSL during the event. Barium has consistently been detected in
samples from upgradient monitoring wells and appears to indicate that barium is naturally occurring. Zinc

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was detected in the samples from downgradient wells MW-2 and MW-11 at concentrations greater than
its SWSL during the January 2011 event. Zinc was also detected in the sample from background well
MW-9R at a similar concentration to those detected in samples from the downgradient wells, as it has
been during previous events, and indicates that the zinc detections are naturally occurring.
Five organic constituents (benzene; cis-1,2-dichloroethene; 1,2-dichloropropane; trichloroethene; and
vinyl chloride) were detected at concentrations above their respective SWSLs in the sample from MW-10
during the November 2011 sampling event. The detected constituents and concentrations reported
during this sampling event are consistent with historical data for this facility.
As presented in Table 5, zinc was detected in the sample from downstream surface water monitoring
point SW-3 at a concentration greater than the SWSL. Zinc has been historically detected in both
upstream and downstream surface water monitoring points and the concentration in the sample from
SW-3 is consistent with historical detections reported for this sampling location. No other NC Appendix I
constituents were reported to be present at concentrations that exceeded respective SWSLs from the
surface water monitoring points during the November 2011 sampling event.
3.0 LABORATORY AND FIELD QA/QC
A field blank was collected by Golder personnel as part of the November 2011 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 the same constituents as the
groundwater samples, and the trip blank for NC Appendix I volatile organic compounds. A review of the
laboratory data was performed by Golder personnel.
Arsenic was detected in the field blank at an estimated concentration. The estimated concentrations of
arsenic in samples from groundwater monitoring wells MW-3R, MW-5, MW-9R, and surface water
monitoring point SW-2 are blank-qualified based on the concentration detected in the field blank. No
other NC Appendix I constituents were detected in the field, trip, or method blanks.
4.0 DATA EVALUATION
The results of the data evaluations are presented in the following sections.
4.1 North Carolina Groundwater and Surface Water Quality Standard
Comparisons
As presented on Table 4, barium was detected in the sample from MW-5 at a concentration that
exceeded the SWSL and NC 2L Standard. As described below, the barium concentration appears to be
naturally occurring. Cobalt, thallium, and vanadium were detected in samples from one or more
downgradient wells at estimated concentrations below their respective SWSL, but above their respective

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Solid Waste Section Groundwater Protection Standard (GPS). These constituents have historically been
detected at comparable concentrations in upgradient and downgradient monitoring wells at the site and
are considered naturally occurring. No other NC Appendix I inorganic constituents were detected above
applicable groundwater standards during the November 2011 event.
As presented on Table 4, benzene; cis-1,2-dichloroethene; 1,2-dichloropropane; trichloroethene; and
vinyl chloride were detected in the sample from MW-10 at concentrations above their respective SWSLs
and NC 2L Standards, as they have been during previous events. No other NC Appendix I organic
constituents were detected above their respective NC 2L Standards during this event. As presented on
Table 5, no NC Appendix I constituents were detected above applicable surface water standards in
samples from downstream surface water monitoring points during the November 2011 event.
4.2 Statistical Evaluations
Barium was detected in the sample from MW-5 at a concentration that exceeded the SWSL and NC 2L
Standard and was, therefore, statistically evaluated to determine if the reported concentration exceeded
the facility background concentration. The statistical worksheets for barium are presented in Appendix C.
As presented, the reported concentration of barium in the sample from MW-5 is below its background
concentration and no further action is recommended.
5.0 CONCLUSIONS
During the November 2011 event, one NC Appendix I inorganic constituent (barium in the sample from
MW-5) was detected at a concentration that exceeded its SWSL and applicable groundwater standard.
The barium detection in the sample from MW-5 was statistically evaluated and determined to not be a
statistically significant increase over background concentrations. Five organic constituents (benzene;
cis-1,2-dichloroethene; 1,2-dichloropropane; trichloroethene; and vinyl chloride) were detected in MW-10
at concentrations that exceeded their respective SWSLs and NC 2L Standards, as they have been during
previous events. Based on the results summarized herein, the City of Durham will continue monitoring
the uppermost aquifer beneath this facility in accordance with the requirements of the Assessment
Monitoring Program as outlined in Title 15A NCAC 13B.1634. The next compliance monitoring event for
this facility is tentatively scheduled for May 2012.
6.0 REFERENCES
Golder Associates NC, Inc., September 2007. Groundwater Monitoring Report, First Semiannual 2007
Sampling Event, City of Durham Closed Municipal Solid Waste Landfill, Permit No. 32-01, Durham
County, North Carolina.
Heath, Ralph C., 1993, Basic Ground-Water Hydrology, USGS Water Supply Paper 2220.
Malcolm Pirnie, Inc., April 1994. City of Durham Sanitary Landfill Water Quality Monitoring Plan.

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Malcolm Pirnie, Inc., December 1996. City of Durham Municipal Solid Waste Landfill November 1996
Assessment Monitoring.
NCGS (North Carolina Geologic Survey), 1985. Geologic Map of North Carolina. Scale 1:500,000.
S&ME, October 2011. May 2011 Semi-Annual Groundwater and Surface Water Monitoring Report, City
of Durham, Closed Municipal Solid Waste Landfill (DWM Permit No. 32-01).
Weston Solutions, Inc., February 2006. December 2005 Semiannual Event - Closed Durham City
Landfill.

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TABLES

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Well ID MW-2 MW-3R MW-4R MW-5 MW-6R MW-7R MW-8 MW-9R MW-10 NES-3 PZ-2R PZ-3 PZ-4R PZ-6
TOC Elevation
(ft AMSL)285.65 285.19 294.48 298.56 290.51 317.12 311.96 360.58 282.81 283.56 346.90 349.33 338.82 349.21
Date
05/26/98 280.20 NI NI 290.20 NI NI 304.40 NI NI NI NI 318.80 NI 308.10
12/01/98 280.06 NI NI 298.43 NI NI 304.40 NI NI NI NI 321.29 NI 304.79
06/07/99 275.71 NI NI 285.79 NI NI 300.87 NI NI NI NI 319.05 NI 303.68
07/08/99 NM NI 289.09 NM NI NI NM NI NI NI NI NM NI NM
12/13/99 279.09 NI 289.49 288.28 NI NI 302.19 NI NI NI NI 319.83 NI 303.64
06/06/00 277.15 NI 289.37 287.10 NI NI 301.98 NI NI NI NI 319.45 NI 305.02
12/11/00 277.10 NI 289.15 288.05 NI NI 302.01 NI NI NI NI 320.27 NI 303.71
06/04/01 278.37 NI 289.67 286.67 NI NI 301.42 NI NI NI NI 318.52 NI 304.90
12/04/01 275.19 NI 289.15 288.25 NI NI 299.32 NI NI NI NI 319.11 NI 304.71
06/10/02 275.59 NI 288.52 288.38 NI NI 302.55 NI NI NI NI 317.57 NI 304.11
12/16/02 280.13 NI 290.51 292.22 NI NI 305.28 NI NI NI NI 318.72 NI 305.12
06/09/03 278.90 NI 290.04 288.21 NI NI 301.45 NI NI NI NI 317.81 NI 305.75
12/08/03 278.49 NI 289.82 288.06 NI NI 310.00 NI NI NI NI 319.84 NI 305.53
06/28/04 276.34 NM 290.00 287.15 275.79 297.73 300.87 349.02 NI NI 318.70 319.37 313.74 308.83
12/20/04 275.48 NM 289.78 288.18 276.89 299.55 301.72 334.52 NI NI 318.98 321.02 319.78 307.16
06/06/05 280.35 NM 289.87 287.31 275.79 297.82 300.74 349.62 NI NI 320.93 321.07 320.42 306.90
12/05/05 274.26 NM 289.94 287.72 275.59 299.17 300.09 346.25 NI NI 319.65 320.75 317.42 302.60
06/05/06 277.45 NM 291.10 287.45 275.81 298.91 300.51 347.47 NI NI 319.74 318.85 317.89 304.85
12/04/06 279.40 NM 290.02 288.80 277.18 300.86 301.80 349.22 NI NI 319.56 319.30 317.42 304.10
05/30/07 279.38 NM 291.00 289.89 278.59 300.48 303.60 348.47 NI NI 320.18 318.56 319.08 300.51
11/19/07 273.92 NM 292.72 287.60 276.62 298.07 302.37 343.35 NI NI 319.20 318.91 316.28 304.41
05/19/08 282.10 281.76 293.41 291.72 280.04 302.98 304.87 349.36 NI NI 319.85 317.82 317.18 308.27
11/19/08 280.36 281.55 293.30 291.25 279.42 302.46 304.58 346.98 277.32 NI 319.64 318.31 317.07 306.72
06/30/09 279.07 280.11 292.11 290.00 278.45 300.40 303.39 347.71 276.86 NI 321.11 317.77 318.08 308.08
11/30/09 279.48 281.70 292.34 290.15 278.89 301.66 303.85 346.84 276.07 NI 319.33 317.49 315.67 305.04
05/20/10 281.47 281.76 292.51 290.12 279.20 301.44 304.11 351.95 276.16 NI 321.12 317.76 317.98 306.88
11/19/10 276.43 281.08 292.00 289.31 277.35 300.31 305.37 344.38 275.74 274.74 320.28 317.80 316.40 304.18
05/19/11 281.17 281.92 292.18 290.16 278.81 301.45 303.26 347.10 276.00 276.56 320.70 316.38 316.07 NM
11/28/11 276.20 281.31 292.00 289.35 277.62 300.52 302.05 342.60 275.57 275.82 320.87 317.36 315.10 303.62
MEAN 278.17 281.40 290.73 289.14 277.63 300.24 302.82 346.55 276.25 275.71 319.99 318.89 317.22 305.23
MAXIMUM 282.10 281.92 293.41 298.43 280.04 302.98 310.00 351.95 277.32 276.56 321.12 321.29 320.42 308.83
MINIMUM 273.92 280.11 288.52 285.79 275.59 297.73 299.32 334.52 275.57 274.74 318.70 316.38 313.74 300.51
Notes:
ft AMSL = feet above mean sea level
NA = not applicable
NM = not measured
TOC = top of well casing
NI = not installed
TOC elevations were surveyed by SEPI Engineering in September 2009.
Durham County, North Carolina
TABLE 1
Summary of Historical Groundwater Elevation Data in Monitoring Wells
Static Water Elevation (ft AMSL)
City of Durham Closed Landfill, Permit #32-01
City of Durham tables Nov 2011.xlsx
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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)
320
280
320
280
320
290
Notes:
Horizontal velocities based on the modified Darcy equation Vgw = Ki/ne.
Values for K and ne based on estimates from Malcolm Pirnie, Inc.'s City of Durham Municipal Solid Waste Landfill December 1998 Groundwater
Monitoring Letter Report dated January 29, 1999 and Weston Solutions, Inc.'s December 2005 Semiannual Event--Closed Durham City Landfill
0.0182
145.82
105.04
83.41
0.2
0.2
0.2
8.87E-04
8.87E-04
8.87E-04
0.0229
i3
NW
W
SW
1259
1747
1650
i2
TABLE 2
Summary of Estimated Horizontal Flow Velocities
City of Durham Closed Landfill, Permit #32-01
November 2011
i1 0.0318
Durham County, North Carolina
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Well Well Ground Surface TOC Well Well Screened
Identification Type Elevation Elevation Depth Diameter Interval
(ft AMSL)(ft AMSL)(feet)(inches)(ft AMSL)
MW-2 Compliance Well 283.69 285.65 19.62 2 264.07 - 274.07
MW-3R Compliance Well 282.18 285.19 17.65 2 264.53 - 274.53
MW-4R Compliance Well 291.91 294.48 17.39 2 274.52 - 284.52
MW-5 Compliance Well 297.16 298.56 21.77 2 275.39 - 285.39
MW-6R Water Level Only 287.62 290.51 26.72 2 260.90 - 270.90
MW-7R Water Level Only 314.60 317.12 44.01 2 270.59 - 295.59
MW-8 Water Level Only 308.24 311.96 16.52 2 291.72 - 299.22
MW-9R Compliance Well 358.03 360.58 22.55 2 335.48 - 345.48
MW-10 Compliance Well 280.75 282.81 16.61 2 264.14 - 274.14
NES-3 Water Level Only 280.69 283.56 12.35 2 268.34 - 273.34
P-2R Water Level Only 343.12 345.90 34.59 2 308.53 - 318.53
PZ-3 Water Level Only 345.71 349.33 42.40 2 303.31 - 318.31
PZ-4R Water Level Only 335.85 338.82 38.38 2 297.47 - 312.47
PZ-6 Water Level Only 346.79 349.21 61.50 2 285.29 - 305.29
Notes:
ft AMSL = feet above mean sea level
TOC = Top of Well Casing Elevation
TOC and Ground Surface Elevation surveyed for all wells by SEPI Engineering in September 2009.
Screened Interval is approximate, based on field measurements by S&ME in May 2008.
TABLE 3
Summary of Well Construction Information
City of Durham Closed Landfill, Permit No. 32-01
Durham County, North Carolina
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Antimony ug/L 09/19/94 5 ND --ND ND --ND --ND ND --ND --ND ----
GPS = 1 ug/L ug/L 12/02/94 5 ND --ND ND --ND --ND ND --ND --ND ----
ug/L 02/07/95 5 ND --ND ND --ND --ND ND --ND --ND ----
ug/L 03/13/95 5 ND --ND ND --ND --ND ND --ND --ND ----
ug/L 11/01/95 --------------------------------
ug/L 06/10/96 5 ND --ND ND --ND --ND ND --ND --ND ----
ug/L 11/12/96 5 ND --6 ND --ND --ND ND --ND --ND ----
ug/L 03/18/97 5 ND --ND ND --ND --ND ND --ND --ND ----
ug/L 10/02/97 5 ND --ND ND --ND --ND ND --ND --ND ----
ug/L 05/26/98 5 ND --ND ND --ND --ND ND --ND --ND ----
ug/L 12/01/98 5 ND --ND ND ------ND ND --ND --ND ----
ug/L 06/07/99 5 ND --ND ND ------ND ----ND --ND ----
ug/L 07/08/99 5 ------------ND --ND ------------
ug/L 12/15/99 5 ND --ND ND ----ND ND ND --ND --ND ----
ug/L 06/06/00 5 ND --ND ND ----ND ND ----ND --ND ----
ug/L 12/27/00 5 ND --ND ND ----ND ND ----ND --ND ----
ug/L 06/04/01 5 ND --ND ND ----ND ND ND --ND --ND ----
ug/L 12/03/01 5 ND --ND ND ----ND ND ND --ND --ND ----
ug/L 06/10/02 5 ND --ND ND ----ND ND ND --ND --ND ----
ug/L 12/16/02 5 ND --ND ND ----ND ND ND --ND --ND ----
ug/L 06/09/03 5 ND --ND ND ----ND ND ND --ND --ND ----
ug/L 12/08/03 5 ND --ND ND ----ND ND ND --ND --ND ----
ug/L 06/29/04 5 ND --ND ND ----ND ND --ND --ND ND ----
ug/L 12/20/04 5 ND --ND ND ----ND ND --ND --ND ND ----
ug/L 06/05/05 5 ND --ND ND ----ND ND --ND --ND ND ----
ug/L 12/05/05 5 ND --ND ND ----ND ND --ND --ND ND ----
ug/L 06/05/06 5 ND --ND ND ----ND ND --ND --ND ND ----
ug/L 12/05/06 5 ND --ND ND ----ND ND --ND --ND ND ----
ug/L 05/30/07 6 ND --ND ND ----ND ND --ND --ND ND --ND
ug/L 11/19/07 6 ND --ND ND ----ND ND --0.36 --ND ND --ND
ug/L 05/19/08 6 --ND ND --0.26 --ND ND --ND --ND ND --ND
ug/L 11/19/08 6 --0.51 B 0.59 B --0.68 B --0.65 B 0.53 B ------0.53 B 0.54 B 0.59 B 0.53 J
ug/L 06/30/09 6 --ND ND --ND --ND ND ------ND ND ND ND
ug/L 11/30/09 6 --ND ND --0.196 J --ND ND ------ND 0.365 J ND ND
ug/L 05/20/10 6 --ND ND --ND --ND ND ------ND 1.42 J ND ND
ug/L 11/19/10 6 --ND ND --ND --ND ND ------ND ND ND ND
ug/L 05/19/11 6 --ND ND --ND --ND ND ----------ND ND
ug/L 11/28/11 6 --ND 0.269 J --0.277 J --0.635 J ND ----------ND ND
Arsenic ug/L 09/19/94 5 11 --ND ND --ND --ND 6.8 --ND --ND --
NC 2L = 10 ug/L ug/L 12/02/94 5 ND --ND ND --ND --ND ND --ND --ND ----
ug/L 02/07/95 5 9.1 --ND ND --ND --ND ND --ND --ND ----
ug/L 03/13/95 5 ND --ND ND --ND --8.2 ND --ND --ND ----
ug/L 11/01/95 --ND --ND ND --ND --ND ND --ND --ND ----
ug/L 06/10/96 5 ND --ND ND --ND --ND ND --ND --ND ----
ug/L 11/12/96 5 ND --ND ND --ND --ND ND --ND --ND ----
ug/L 03/18/97 5 5 --ND ND --ND --ND ND --ND --ND ----
ug/L 10/02/97 5 ND --ND ND --ND --ND ND --ND --ND ----
ug/L 05/26/98 5 ND --ND ND --ND --ND 7 --ND --ND ----
ug/L 12/01/98 5 5 --ND 6 ------ND ND --ND --ND ----
ug/L 06/07/99 5 6 --ND 6 ------ND ----ND --------
ug/L 07/08/99 5 ------------5 --7 ------ND ----
ug/L 12/15/99 5 ND --ND ND ----ND ND ND --ND --ND ----
ug/L 06/06/00 5 6 --ND 6 ----ND 7 ----ND --ND ----
ug/L 12/27/00 5 ND --ND 18 ----ND ND ND --ND --ND ----
ug/L 06/04/01 5 ND --ND 6 ----ND ND ND --ND --ND ----
ug/L 12/03/01 5 ND --ND ND ----ND 6 ND --ND --ND ----
ug/L 06/10/02 5 ND --ND ND ----ND ND ND --ND --ND ----
ug/L 12/16/02 5 ND --ND ND ----ND ND ND --ND --ND ----
ug/L 06/09/03 5 ND --ND ND ----ND ND ND --ND --ND ----
ug/L 12/08/03 5 ND --ND 6 ----ND 6 ND --ND --ND ----
ug/L 06/29/04 5 ND --ND 5 ----ND ND --ND --ND ND ----
ug/L 12/20/04 5 ND --ND 5 ----ND 7 --ND --ND ND ----
ug/L 06/05/05 5 ND --ND ND ----ND 6 --ND --6 ND ----
ug/L 12/05/05 5 ND --ND ND ----ND ND --ND --ND ND ----
ug/L 06/05/06 5 ND --ND 5 ----ND 7 --ND --ND ND ----
ug/L 12/05/06 5 ND --ND 5 ----ND 6 --ND --ND ND ----
ug/L 05/30/07 10 ND --ND ND ----ND 3.4 B --ND --2.0 B 3.1 B --3.8 J
ug/L 11/19/07 10 2.3 --0.46 6.3 ----0.69 4.4 --8.4 --4.8 1.2 --0.89
ug/L 05/19/08 10 --ND ND --2.7 --ND 1.9 --0.36 --0.72 ND --ND
ug/L 11/19/08 10 --0.26 J 0.59 J --5.9 J --1.2 J 4.4 J ------1.7 J 1.3 J 3.7 J ND
ug/L 06/30/09 10 --ND ND --6.2 B --8.2 B 4.9 B ------4.4 B ND ND 4.3 J
ug/L 11/30/09 10 --ND ND --ND --ND ND ------ND ND ND ND
ug/L 05/20/10 10 --ND ND --ND --ND 5.98 B ------ND ND ND 3.22 J
ug/L 11/19/10 10 --ND ND --ND --ND ND ------ND ND ND ND
ug/L 05/19/11 10 --ND ND --ND --ND ND ----------5.23 J ND
ug/L 11/28/11 10 --4.99 B ND --2.99 B --ND 3.24 B ----------ND 4.35 J
TABLE 4
City of Durham Closed Landfill, Permit #32-01
Blanks
Durham County, North Carolina
Summary of Detected Constituents in Groundwater
SWS Reporting LimitDetected Monitoring
Constituent/Parameter Reporting Units Sample Date DowngradientUpgradient
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TABLE 4
City of Durham Closed Landfill, Permit #32-01
Blanks
Durham County, North Carolina
Summary of Detected Constituents in Groundwater
SWS Reporting LimitDetected Monitoring
Constituent/Parameter Reporting Units Sample Date DowngradientUpgradient
Barium ug/L 09/19/94 --1834 --199 810 --590 --9400 531 --113 --2115 ----
NC 2L= 700 ug/L ug/L 12/02/94 --760 --32 492 --580 --2300 84 --1775 --119 ----
ug/L 02/07/95 --2648 --48 1047 --737 --2436 118 --1484 --111 ----
ug/L 03/13/95 --524 --37 706 --534 --1630 144 --716 --118 ----
ug/L 11/01/95 --970 --25 1500 --1030 --3360 90 --770 --120 ----
ug/L 06/10/96 --891 --50 1246 --683 --992 140 --459 --123 ----
ug/L 11/12/96 --1555 --47 879 --547 --976 104 --512 --84 ----
ug/L 03/18/97 --850 --70 1287 --774 --1154 87 --509 --138 ----
ug/L 10/02/97 --840 --48 3390 --623 --1250 111 --558 --312 ----
ug/L 05/26/98 --779 --48 1177 --600 --1637 249 --482 --103 ----
ug/L 12/01/98 --2390 --45 1024 ------867 126 --655 --118 ----
ug/L 06/07/99 --1850 --106 1498 ------996 ----2780 --373 ----
ug/L 07/08/99 --------------1217 --507 ------------
ug/L 12/15/99 --944 --84 1510 ----315 942 122 --366 --116 ----
ug/L 06/06/00 --2488 --46 1281 ----377 3979 ----1018 --114 ----
ug/L 12/27/00 --1826 --144 1504 ----1120 5757 768 --518 --104 ----
ug/L 06/04/01 --2804 --128 1433 ----964 3649 284 --862 --475 ----
ug/L 12/03/01 --965 --153 1219 ----1053 1441 723 --750 --778 ----
ug/L 06/10/02 --849 --53 1117 ----943 1167 295 --554 --843 ----
ug/L 12/16/02 --620 --59 1121 ----544 909 128 --429 --209 ----
ug/L 06/09/03 --432 --67 1175 ----437 941 103 --450 --120 ----
ug/L 12/08/03 --2881 --85 1115 ----544 3692 221 --648 --141 ----
ug/L 06/29/04 --5664 --97 1024 ----551 1899 --3039 --763 139 ----
ug/L 12/20/04 --578 --90 1236 ----543 4192 --1444 --639 111 ----
ug/L 06/05/05 --952 --64 1065 ----607 1845 --589 --817 93 ----
ug/L 12/05/05 --435 --126 1331 ----585 1758 --512 --703 92 ----
ug/L 06/05/06 --575 --97 1339 ----796 3778 --939 --880 90 ----
ug/L 12/05/06 --635 --63 2018 ----890 3134 --819 --924 71 ----
ug/L 05/30/07 100 619 --67.2 J 1490 ----472 1240 --400 --622 69.0 J --ND
ug/L 11/19/07 100 1300 --120 1400 ----510 1400 --970 --820 300 --ND
ug/L 05/19/08 100 --55 J 66 --530 --580 1300 --430 --600 33 --ND
ug/L 11/19/08 100 --38 J 82 J --380 --510 1400 ------580 64 J 250 ND
ug/L 06/30/09 100 --51.2 J 80.8 J --440 --552 1590 ------618 106 341 ND
ug/L 11/30/09 100 --45.8 J 58 J --80.8 J --513 1450 ------580 39.4 J 168 ND
ug/L 05/20/10 100 --45.1 J 64.7 J --166 --564 1460 ------578 41.5 J 122 ND
ug/L 11/19/10 100 --53.3 J 114 --102 --485 1500 ------572 56.1 J 238 ND
ug/L 05/19/11 100 --53.1 J 83 J --116 --562 1860 ----------248 1.14 J
ug/L 11/28/11 100 --80.4 J 195 --130 --540 1870 ----------268 ND
Beryllium ug/L 09/19/94 1 8.1 --1.5 ND --ND --9.8 6.9 --ND --7.3 ----
SWS GPS = 4 ug/L ug/L 12/02/94 1 3.1 --ND ND --ND --5 ND --3.9 --ND ----
ug/L 02/07/95 1 8.6 --ND ND --ND --4.7 ND --1.9 --ND ----
ug/L 03/13/95 1 1.5 --ND ND --ND --5.2 ND --ND --ND ----
ug/L 11/01/95 1 18 --ND ND --ND --8 ND --ND --ND ----
ug/L 06/10/96 1 3 --1.5 ND --ND --ND ND --ND --ND ----
ug/L 11/12/96 1 5 --ND 3 --ND --ND ND --ND --ND ----
ug/L 03/18/97 1 ND --ND ND --ND --ND ND --ND --ND ----
ug/L 10/02/97 1 1.5 --ND 1.3 --ND --ND ND --ND --ND ----
ug/L 05/26/98 1 1 --ND ND --ND --ND ND --ND --ND ----
ug/L 12/01/98 1 2 --ND ND ------ND ND --ND --ND ----
ug/L 06/07/99 1 5 --ND 3 ------ND ----4 --ND ----
ug/L 07/08/99 1 ------------2 --2 ------------
ug/L 12/15/99 1 2 --ND 2 ----ND ND ND --ND --ND ----
ug/L 06/06/00 1 7 --ND ND ----ND 5 2 --2 --ND ----
ug/L 12/27/00 1 2 --ND ND ----ND 8 1 --ND --ND ----
ug/L 06/04/01 1 4 --ND ND ----ND 2 3 --ND --ND ----
ug/L 12/03/01 1 ND --ND ND ----ND ND ND --ND --ND ----
ug/L 06/10/02 1 ND --ND ND ----ND ND ND --ND --ND ----
ug/L 12/16/02 1 ND --ND ND ----ND ND ND --ND --ND ----
ug/L 06/09/03 1 ND --ND ND ----ND ND ND --ND --ND ----
ug/L 12/08/03 1 2 --ND ND ----ND 2 ----ND --ND ----
ug/L 06/29/04 1 2 --ND ND ----ND ND --2 --ND ND ----
ug/L 12/20/04 1 ND --ND ND ----ND 2 --1 --ND ND ----
ug/L 06/05/05 1 ND --ND ND ----ND ND --ND --ND ND ----
ug/L 12/05/05 1 ND --ND ND ----ND ND --ND --ND ND ----
ug/L 06/05/06 1 ND --ND ND ----ND 2 --ND --ND ND ----
ug/L 12/05/06 1 ND --ND ND ----ND 1 --ND --ND ND ----
ug/L 05/30/07 1 ND --ND ND ----ND ND --ND --ND ND --ND
ug/L 11/19/07 1 3.1 --ND ND ----ND ND --1.4 --0.79 0.93 --ND
ug/L 05/19/08 1 --0.38 J ND --0.25 --ND ND --ND --ND ND --ND
ug/L 11/19/08 1 --0.73 J 0.73 J --ND --ND 0.34 J ------0.3 J 0.37 J ND ND
ug/L 06/30/09 1 --0.47 J 0.11 J --ND --0.13 J ND ------ND ND 0.46 J ND
ug/L 11/30/09 1 --0.534 B 0.182 B --ND --ND ND ------ND ND 0.131 B 0.121 J
ug/L 05/20/10 1 --0.521 J 0.21 J --ND --ND ND ------ND ND ND ND
ug/L 11/19/10 1 --0.608 J 0.191 J --ND --ND ND ------ND ND ND ND
ug/L 05/19/11 1 --0.549 J 0.242 J --ND --ND ND ----------0.14 J ND
ug/L 11/28/11 1 --0.770 J 0.204 J --ND --ND ND ----------ND ND
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TABLE 4
City of Durham Closed Landfill, Permit #32-01
Blanks
Durham County, North Carolina
Summary of Detected Constituents in Groundwater
SWS Reporting LimitDetected Monitoring
Constituent/Parameter Reporting Units Sample Date DowngradientUpgradient
Cadmium ug/L 09/19/94 1 ND --ND ND --ND --1.6 4 --ND --ND ----
NC 2L =2 ug/L ug/L 12/02/94 1 ND --1 ND --ND --ND ND --ND --ND ----
ug/L 02/07/95 1 2.2 --ND ND --ND --1.6 ND --32 --ND ----
ug/L 03/13/95 1 ND --ND ND --ND --ND 1.2 --ND --ND ----
ug/L 11/01/95 1 ND --ND ND --ND --ND ND --ND --ND ----
ug/L 06/10/96 1 ND --1.8 ND --ND --ND ND --ND --ND ----
ug/L 11/12/96 1 ND --ND ND --ND --ND ND --ND --ND ----
ug/L 03/18/97 1 ND --ND ND --ND --ND ND --ND --ND ----
ug/L 10/02/97 1 ND --ND ND --ND --ND ND --ND --ND ----
ug/L 05/26/98 1 ND --ND ND --ND --ND ND --ND --ND ----
ug/L 12/01/98 1 ND --ND ND ------ND ND --ND --ND ----
ug/L 06/07/99 1 ND --ND ND ------3 ----ND --ND ----
ug/L 07/08/99 1 ------------ND --1 ------------
ug/L 12/15/99 1 ND --ND ND ----ND ND 1 --ND --ND ----
ug/L 06/06/00 1 ND --ND ND ----ND 1 ----ND --ND ----
ug/L 12/27/00 1 ND --ND ND ----ND 1 2 --ND --ND ----
ug/L 06/04/01 1 ND --ND ND ----ND ND 1 --ND --ND ----
ug/L 12/03/01 1 ND --ND ND ----ND ND 2 --ND --ND ----
ug/L 06/10/02 1 ND --7 ND ----ND 2 3 --ND --ND ----
ug/L 12/16/02 1 ND --1 ND ----ND ND 2 --ND --ND ----
ug/L 06/09/03 1 ND --ND ND ----ND ND ND --ND --ND ----
ug/L 12/08/03 1 ND --ND ND ----ND ND 7 --ND --ND ----
ug/L 06/29/04 1 1 --ND ND ----ND ND --ND --ND ND ----
ug/L 12/20/04 1 1 --ND ND ----ND ND --ND --ND ND ----
ug/L 06/05/05 1 ND --ND ND ----ND ND --ND --ND ND ----
ug/L 12/05/05 1 ND --ND ND ----ND ND --ND --ND ND ----
ug/L 06/05/06 1 ND --ND ND ----ND ND --ND --ND ND ----
ug/L 12/05/06 1 ND --ND ND ----ND ND --ND --ND ND ----
ug/L 05/30/07 1 ND --ND ND ----ND ND --1.1 --ND ND --ND
ug/L 11/19/07 1 0.93 --ND ND ----ND ND --2.1 --0.34 ND --ND
ug/L 05/19/08 1 --ND ND --ND --ND ND --ND --ND ND --ND
ug/L 11/19/08 1 --0.29 B 0.49 B --0.34 B --0.4 B 0.28 B ------0.29 B 0.31 B 0.32 B 0.28 J
ug/L 06/30/09 1 --ND ND --0.12 B --ND 0.13 B ------ND ND 0.26 B 0.22 J
ug/L 11/30/09 1 --ND ND --ND --ND ND ------ND ND ND ND
ug/L 05/20/10 1 --ND ND --ND --ND ND ------ND ND ND ND
ug/L 11/19/10 1 --ND ND --ND --ND ND ------ND ND ND ND
ug/L 05/19/11 1 --ND ND --ND --ND ND ----------ND ND
ug/L 11/28/11 1 --ND ND --ND --ND ND ----------ND ND
Chromium ug/L 09/19/94 5 207 --25 5.4 --ND --699 148 --12 --139 ----
NC 2L = 10 ug/L ug/L 12/02/94 5 71 --ND ND --ND --142 13 --95 --9.7 ----
ug/L 02/07/95 5 271 --ND ND --ND --128 9.6 --45 --8.3 ----
ug/L 03/13/95 5 5.8 --ND ND --ND --36 5.7 --14 --13 ----
ug/L 11/01/95 5 40 --ND 21 --8 --129 5 --7 --6 ----
ug/L 06/10/96 5 65 --ND 49 --ND --12 122 --ND --ND ----
ug/L 11/12/96 5 133 --ND 96 --7 --19 5 --10 --9 ----
ug/L 03/18/97 5 ND --ND 22 --ND --ND 165 --ND --ND ----
ug/L 10/02/97 5 65 --ND 15 --ND --ND ND --7 --ND ----
ug/L 05/26/98 5 37 --ND 6 --ND --6 8 --5 --ND ----
ug/L 12/01/98 5 176 --ND 47 ------ND 5 --9 --11 ----
ug/L 06/07/99 5 46 --ND 69 ------7 ----35 --ND ----
ug/L 07/08/99 5 ------------108 --89 ------------
ug/L 12/15/99 5 121 --5 68 ----5 5 5 --5 --5 ----
ug/L 06/06/00 5 297 --5 40 ----5 7 ----33 --5 ----
ug/L 12/27/00 5 102 --7 6 ----ND 150 40 --ND --ND ----
ug/L 06/04/01 5 41 --ND ND ----ND ND ND --25 --13 ----
ug/L 12/03/01 5 54 --ND 23 ----ND 24 12 --16 --ND ----
ug/L 06/10/02 5 21 --ND 16 ----ND 7 26 --ND --6 ----
ug/L 12/16/02 5 32 --ND 19 ----30 ND ND --5 --17 ----
ug/L 06/09/03 5 88 --5 28 ----9 ND 9 --7 --10 ----
ug/L 12/08/03 5 89 --ND 62 ----17 40 11 --19 --10 ----
ug/L 06/29/04 5 104 --13 71 ----ND 16 --65 --13 12 ----
ug/L 12/20/04 5 11 --6 9 ----ND 67 --41 --7 ND ----
ug/L 06/05/05 5 32 --ND 32 ----ND 14 --5 --18 ND ----
ug/L 12/05/05 5 ND --5 53 ----5 22 --ND --7 ND ----
ug/L 06/05/06 5 69 --6 39 ----ND 41 --8 --9 ND ----
ug/L 12/05/06 5 9 --ND ND ----ND 5 --ND --ND ND ----
ug/L 05/30/07 10 7.0 J --ND ND ----ND ND --ND --ND ND --ND
ug/L 11/19/07 10 90 --4.7 7.1 ----2.3 8.8 --24 --18 20 --ND
ug/L 05/19/08 10 --ND ND --2.4 J --ND ND --ND --ND ND --ND
ug/L 11/19/08 10 --ND ND --3.0 J --2.5 J ND ------ND 2.3 J 6.3 J ND
ug/L 06/30/09 10 --0.7 J 1.4 J --1.2 J --0.7 J 1.3 J ------1.2 J 0.7 J 6.1 J ND
ug/L 11/30/09 10 --1.21 J ND --1.45 J --ND ND ------2.12 J ND 1.02 J ND
ug/L 05/20/10 10 --ND ND --1.64 J --ND ND ------ND 1.72 J 2.07 J ND
ug/L 11/19/10 10 --5.65 J 2.27 J --1.47 J --ND ND ------3.28 J ND 2.62 J ND
ug/L 05/19/11 10 --1.3 J 8.21 J --4.85 J --1.37 J 1.29 J ----------4.17 J ND
ug/L 11/28/11 10 --7.67 J 4.88 J --3.02 J --ND 1.27 J ----------ND ND
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TABLE 4
City of Durham Closed Landfill, Permit #32-01
Blanks
Durham County, North Carolina
Summary of Detected Constituents in Groundwater
SWS Reporting LimitDetected Monitoring
Constituent/Parameter Reporting Units Sample Date DowngradientUpgradient
Cobalt ug/L 09/19/94 ------ND ND --ND --89 26 --ND --32 ----
SWS GPS = 1 ug/L ug/L 12/02/94 --ND --ND ND --ND --39 26 --11 --ND ----
ug/L 02/07/95 --30 --ND ND --ND --23 18 --14 --ND ----
ug/L 03/13/95 ------ND ND --ND --18 24 --12 --ND ----
ug/L 11/01/95 10 12 --ND 11 --ND --47 13 --ND --ND ----
ug/L 06/10/96 10 ND --ND 15 --ND --ND ND --ND --12 ----
ug/L 11/12/96 10 34 --ND 25 --ND --ND ND --ND --13 ----
ug/L 03/18/97 10 16 --ND 15 --ND --ND 12 --ND --16 ----
ug/L 10/02/97 10 20.6 --ND 40 --ND --ND ND --ND --21.5 ----
ug/L 05/26/98 10 45 --ND ND --ND --ND ND --ND --15 ----
ug/L 12/01/98 25 ND --ND ND ------ND ND --ND --ND ----
ug/L 06/07/99 10 34 --ND 25 ------ND ----55 --14 ----
ug/L 07/08/99 10 ------------29 --14 ------------
ug/L 12/15/99 10 16 --ND 24 ----ND ND ND --ND --14 ----
ug/L 06/06/00 10 32 --ND 19 ----ND 76 ----ND --14 ----
ug/L 12/27/00 10 ND --ND 19 ----ND 150 210 --ND --19 ----
ug/L 06/04/01 10 50 --ND 30 ----ND 60 85 --ND --13 ----
ug/L 12/03/01 10 33 --ND 31 ----ND 11 200 --26 --17 ----
ug/L 06/10/02 10 16 --ND 24 ----ND 14 ----12 --20 ----
ug/L 12/16/02 10 14 --ND 21 ----11 ND 27 --ND --25 ----
ug/L 06/09/03 10 ND --ND 24 ----ND ND 12 --ND --16 ----
ug/L 12/08/03 10 87 --ND 21 ----ND 65 13 --ND --16 ----
ug/L 06/29/04 10 91 --ND 24 ----ND ND --48 --ND 26 ----
ug/L 12/20/04 5 7.4 --ND 19 ----ND 47 --25 --ND 20 ----
ug/L 06/05/05 ------ND ------------------------
ug/L 12/05/05 ------ND ------------------------
ug/L 06/05/06 ------ND ------------------------
ug/L 12/05/06 ------ND ------------------------
ug/L 05/30/07 10 3.2 J --ND 4.3 J ----ND ND --10.2 --ND 11.2 --ND
ug/L 11/19/07 10 16 --2.3 J 10 ----2 J 2.5 J --21 --7 J 21 --ND
ug/L 05/19/08 10 --5.1 J ND --7.3 --ND ND --17 --ND 2.6 J --ND
ug/L 11/19/08 10 --5.0 J ND --4.7 J --ND ND ------ND 7.8 J 16 ND
ug/L 06/30/09 10 --5.9 J 0.7 J --6.7 J --0.8 J ND ------ND 5.7 J 21.7 ND
ug/L 11/30/09 10 --5.43 J ND --1.95 J --ND ND ------ND 4.28 J 8.89 J ND
ug/L 05/20/10 10 --5.75 J ND --4.42 J --ND ND ------ND 6.01 J 3.89 J ND
ug/L 11/19/10 10 --6.12 J ND --2.5 J --ND ND ------ND 4.41 J 8.05 J ND
ug/L 05/19/11 10 --6.93 J ND --1.7 J --ND ND ----------5.31 J ND
ug/L 11/28/11 10 --7.63 J ND --2.74 J --ND ND ----------5.64 J ND
Copper ug/L 09/19/94 5 109 --7 ND --ND --598 119 --ND --73 ----
NC 2L = 1000 ug/L ug/L 12/02/94 5 44 --ND ND --ND --113 14 --43 --7.3 ----
ug/L 02/07/95 5 150 --ND ND --ND --75 9.9 --50 --5.2 ----
ug/L 03/13/95 5 17 --ND ND --ND --58 13 --11 --6.8 ----
ug/L 11/01/95 5 20 --ND 7 --11 --145 ND --7 --ND ----
ug/L 06/10/96 5 62 --ND 50 --6 --8.7 ND --ND --ND ----
ug/L 11/12/96 5 73 --ND 50 --ND --10 ND --ND --ND ----
ug/L 03/18/97 5 ND --ND 50 --ND --ND ND --ND --ND ----
ug/L 10/02/97 5 27 --ND 16 --ND --ND ND --ND --ND ----
ug/L 05/26/98 5 30 --ND 6 --ND --ND ND --ND --ND ----
ug/L 12/01/98 5 60 --ND 8 ------ND ND --ND --ND ----
ug/L 06/07/99 5 69 --ND 23 ------10 ----43 --ND ----
ug/L 07/08/99 5 ------------89 --30 ------------
ug/L 12/15/99 5 30 --5 30 ----5 6 5 --5 --5 ----
ug/L 06/06/00 5 101 --5 12 ----5 ------17 --5 ----
ug/L 12/27/00 5 48 --5 ND ----5 34 34 --ND --ND ----
ug/L 06/04/01 5 95 --ND 20 ----ND 28 28 --ND --ND ----
ug/L 12/03/01 5 28 --ND 13 ----ND 15 15 --14 --ND ----
ug/L 06/10/02 5 30 --ND 10 ----ND 20 20 --5 --7 ----
ug/L 12/16/02 5 16 --ND 15 ----20 16 16 --10 --23 ----
ug/L 06/09/03 5 52 --ND 16 ----ND 14 14 --5 --8 ----
ug/L 12/08/03 5 92 --ND 7 ----6 26 26 --6 --7 ----
ug/L 06/29/04 5 211 --5 6 ----ND ----75 --12 5 ----
ug/L 12/20/04 5 7 --ND ND ----ND ----39 --ND 6 ----
ug/L 06/05/05 2 28 --ND ND ----ND ----8 --11 ND ----
ug/L 12/05/05 2 ND --4 10 ----4 ----3 --ND ND ----
ug/L 06/05/06 2 6 --3 4 ----3 ----14 --7 4 ----
ug/L 12/05/06 2 4 --ND 2 ----ND ----3 --ND ND ----
ug/L 05/30/07 10 7.2 J --1.1 B ND ----1.7 B ND --1.8 B --0.6 B ND --0.7 J
ug/L 11/19/07 10 50 --2.1 B 1.7 B ----1.1 B 4 B --60 --7.2 17 --1.1
ug/L 05/19/08 10 --2.4 B 1.8 B --7.3 B --4.6 B 1.7 B --2 B --1.3 B 1.8 B --5.7
ug/L 11/19/08 10 --1.2 B 1.4 B --3.4 B --1.5 B 1.3 B ------1.2 B 2.6 B 3.7 B 1.1 J
ug/L 06/30/09 10 --1.14 B ND --ND --ND ND ------ND ND 1.33 B 2.36 J
ug/L 11/30/09 10 --ND ND --ND --ND ND ------ND ND ND ND
ug/L 05/20/10 10 --ND ND --ND --ND ND ------ND ND 11.5 ND
ug/L 11/19/10 10 --ND ND --ND --ND ND ------ND ND ND ND
ug/L 05/19/11 10 --1.99 J 2.62 J --2.50 J --ND ND ----------6.08 J ND
ug/L 11/28/11 10 --5.69 J 2.95 J --ND --ND ND ----------1.79 J ND
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TABLE 4
City of Durham Closed Landfill, Permit #32-01
Blanks
Durham County, North Carolina
Summary of Detected Constituents in Groundwater
SWS Reporting LimitDetected Monitoring
Constituent/Parameter Reporting Units Sample Date DowngradientUpgradient
Lead ug/L 09/19/94 5 40 --ND ND --ND --199 46 --8.8 --47 ----
NC 2L = 15 ug/L ug/L 12/02/94 5 30 --14 6.6 --ND --77 19 --53 --10 ----
ug/L 02/07/95 5 76 --7.8 6.3 --7 --63 7.1 --34 --12 ----
ug/L 03/13/95 5 11 --ND ND --ND --35 12 --14 --63 ----
ug/L 11/01/95 5 14 --ND 12 --5 --60 ND --9 --ND ----
ug/L 06/10/96 5 25 --ND 42 --ND --ND ND --ND --ND ----
ug/L 11/12/96 5 30 --ND 29 --ND --8 ND --10 --ND ----
ug/L 03/18/97 5 ND --ND 8 --ND --ND ND --10 --ND ----
ug/L 10/02/97 5 16 --ND 55 --ND --14 ND --22 --7 ----
ug/L 05/26/98 5 11 --ND ND --ND --ND ND --ND --ND ----
ug/L 12/01/98 5 36 --ND 8 ------ND ND --8 --ND ----
ug/L 06/07/99 5 19 --ND 29 ------8 ----54 --ND ----
ug/L 07/08/99 5 ------------29 --30 ------------
ug/L 12/15/99 5 14 --ND 33 ----ND ND ND --ND --ND ----
ug/L 06/06/00 5 37 --ND 12 ----ND 16 ----28 --ND ----
ug/L 12/27/00 5 20 --10 ND ----ND 82 52 --ND --ND ----
ug/L 06/04/01 5 35 --8 20 ----ND 68 21 --ND --ND ----
ug/L 12/03/01 5 23 --ND 13 ----ND 23 36 --30 --ND ----
ug/L 06/10/02 5 6 --ND 10 ----ND 7 13 --ND --ND ----
ug/L 12/16/02 5 ND --5 11 ----8 ND 8 --5 --12 ----
ug/L 06/09/03 5 ND --ND 24 ----ND ND ND --8 --ND ----
ug/L 12/08/03 5 35 --ND ND ----ND 47 14 --8 --ND ----
ug/L 06/29/04 5 83 --ND ND ----28 11 --51 --6 ND ----
ug/L 12/20/04 5 ND --ND 5 ----ND 75 --19 --ND ND ----
ug/L 06/05/05 5 13 --ND ND ----ND 39 --ND --7 ND ----
ug/L 12/05/05 5 ND --ND 9 ----ND 13 --ND --ND ND ----
ug/L 06/05/06 5 ND --ND ND ----ND 38 --6 --ND ND ----
ug/L 12/05/06 5 ND --ND ND ----ND 12 --ND --ND ND ----
ug/L 05/30/07 10 3.5 B --ND ND ----ND ND --ND --ND ND --3.1 J
ug/L 11/19/07 10 25 --11 B ND ----3.8 B 5.1 B --12 B --13 B 17 B --3.5
ug/L 05/19/08 5 --ND ND --ND --ND ND --ND --ND ND --ND
ug/L 11/19/08 10 --3.2 B 0.5 B --1.3 B --0.19 B 0.29 B ------4.7 B 1.2 B 3.8 B 3.1 J
ug/L 06/30/09 10 --ND ND --ND --3.6 B 2.1 B ------ND 2.3 B 8.8 B ND
ug/L 11/30/09 10 --ND ND --ND --ND ND ------ND ND 2.22 B 3.09 J
ug/L 05/20/10 10 --ND ND --ND --ND ND ------ND 2.51 J 2.04 J ND
ug/L 11/19/10 10 --ND ND --ND --ND ND ------2.62 J ND ND ND
ug/L 05/19/11 10 --ND ND --ND --ND ND ----------ND ND
ug/L 11/28/11 10 --2.81 J ND --ND --ND ND ----------ND ND
Nickel ug/L 09/19/94 10 17 --15 ND --ND --468 13 --13 --77 ----
NC 2L = 100 ug/L ug/L 12/02/94 10 56 --ND 10 --ND --96 35 --55 --14 ----
ug/L 02/07/95 10 211 --ND ND --ND --64 26 --31 --ND ----
ug/L 03/13/95 10 30 --ND 9.1 --ND --61 40 --25 --11 ----
ug/L 11/01/95 10 32 --ND 15 --ND --68 28 --16 --ND ----
ug/L 06/10/96 10 49 --ND 22 --ND --ND 100 --ND --ND ----
ug/L 11/12/96 10 103 --ND 24 --49 --12 10 --ND --ND ----
ug/L 03/18/97 10 50 --ND 16 --ND --ND 29 --ND --ND ----
ug/L 10/02/97 10 52 --ND 18 --ND --ND 11 --ND --ND ----
ug/L 05/26/98 10 43 --ND 19 --11 --ND 23 --ND --ND ----
ug/L 12/01/98 10 124 --ND 12 ------ND 10 --ND --ND ----
ug/L 06/07/99 10 126 --ND 35 ------16 ----34 --ND ----
ug/L 07/08/99 10 ------------37 --57 ------------
ug/L 12/15/99 10 227 --10 64 ----ND ND 44 --ND --ND ----
ug/L 06/06/00 10 343 --ND 37 ----ND 13 ----25 --ND ----
ug/L 12/27/00 10 144 --ND 14 ----ND 132 34 --ND --ND ----
ug/L 06/04/01 10 88 --ND 13 ----11 20 13 --ND --ND ----
ug/L 12/03/01 10 54 --ND 21 ----ND 19 34 --16 --ND ----
ug/L 06/10/02 10 21 --ND 16 ----ND ND 27 --ND --ND ----
ug/L 12/16/02 10 33 --ND 19 ----ND ND 25 --ND --14 ----
ug/L 06/09/03 10 26 --ND 23 ----ND ND 19 --ND --11 ----
ug/L 12/08/03 10 99 --ND 13 ----ND 29 36 --ND --ND ----
ug/L 06/29/04 10 130 --12 15 ----ND 14 --10 --10 ND ----
ug/L 12/20/04 10 10 --ND ND ----ND 46 --37 --10 ND ----
ug/L 06/05/05 10 35 --ND ND ----ND 13 --18 --11 ND ----
ug/L 12/05/05 10 ND --10 19 ----ND 15 --18 --ND ND ----
ug/L 06/05/06 10 61 --ND 21 ----ND 33 --19 --ND ND ----
ug/L 12/05/06 10 32 --ND 10 ----ND ND --18 --ND ND ----
ug/L 05/30/07 50 27.4 J --ND 2.5 J ----2.9 J 4.0 J --23.1 J --ND 2.9 J --ND
ug/L 11/19/07 50 140 --9.9 16 ----ND 11 --45 --19 37 --ND
ug/L 05/19/08 50 --ND ND --ND --ND ND --17 --ND ND --ND
ug/L 11/19/08 50 --ND ND --11.0 --ND ND ------ND ND 10.0 J ND
ug/L 06/30/09 50 --3.6 B 3.4 B --8.7 B --5.0 B 5.7 B ------2.1 B 7.6 B 13.1 B 0.6 J
ug/L 11/30/09 50 --2.17 B ND --5.81 B --2.29 B 2.81 B ------ND ND 4.28 B 4.59 J
ug/L 05/20/10 50 --2.61 J ND --6.78 J --2.56 J 3.20 J ------ND ND 1.98 J ND
ug/L 11/19/10 50 --4.33 J 3.13 J --5.34 J --2.37 J 1.89 J ------ND ND 6.23 J ND
ug/L 05/19/11 50 --3.03 J 2.99 J --6.92 J --3.94 J 3.31 J ----------6.16 J ND
ug/L 11/28/11 50 --5.78 J 8.84 J --7.08 J --2.95 J 2.84 J ----------5.47 J ND
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TABLE 4
City of Durham Closed Landfill, Permit #32-01
Blanks
Durham County, North Carolina
Summary of Detected Constituents in Groundwater
SWS Reporting LimitDetected Monitoring
Constituent/Parameter Reporting Units Sample Date DowngradientUpgradient
Selenium ug/L 09/19/94 5 ND --ND ND --ND --ND ND --ND --ND ----
NC 2L = 20 ug/L ug/L 12/02/94 5 ND --7.6 ND --ND --ND ND --ND --ND ----
ug/L 02/07/95 5 ND --ND ND --ND --ND ND --ND --ND ----
ug/L 03/13/95 5 ND --ND ND --ND --ND ND --ND --ND ----
ug/L 11/01/95 5 ND --ND ND --ND --ND ND --ND --ND ----
ug/L 06/10/96 5 ND --ND ND --ND --ND ND --ND --ND ----
ug/L 11/12/96 5 ND --ND ND --ND --ND ND --ND --ND ----
ug/L 03/18/97 5 ND --ND ND --ND --ND ND --ND --ND ----
ug/L 10/02/97 5 ND --ND ND --ND --ND ND --ND --ND ----
ug/L 05/26/98 5 ND --ND 9 --ND --ND ND --ND --ND ----
ug/L 12/01/98 5 ND --ND ND ------ND ND --ND --ND ----
ug/L 06/07/99 5 ND --ND ND ------ND ----ND --ND ----
ug/L 07/08/99 5 ------------ND --ND ------------
ug/L 12/15/99 5 ND --ND ND ----ND ND ND --ND --ND ----
ug/L 06/06/00 5 ND --ND ND ----ND ND ----ND --ND ----
ug/L 12/27/00 5 ND --ND ND ----ND ND ND --ND --ND ----
ug/L 06/04/01 5 ND --ND ND ----ND ND ND --ND --ND ----
ug/L 12/03/01 5 ND --ND 9 ----ND ND ND --ND --ND ----
ug/L 06/10/02 5 ND --ND 9 ----ND ND ND --ND --ND ----
ug/L 12/16/02 5 ND --ND 6 ----ND ND ND --ND --ND ----
ug/L 06/09/03 5 ND --ND ND ----ND ND ND --ND --ND ----
ug/L 12/08/03 5 ND --ND ND ----ND ND ND --ND --ND ----
ug/L 06/29/04 5 ND --ND ND ----ND ND --ND --ND ND ----
ug/L 12/20/04 5 ND --ND ND ----ND ND --ND --ND ND ----
ug/L 06/05/05 5 ND --ND ND ----ND ND --ND --ND ND ----
ug/L 12/05/05 5 ND --ND ND ----ND ND --ND --ND ND ----
ug/L 06/05/06 5 ND --ND ND ----ND ND --ND --ND ND ----
ug/L 12/05/06 5 ND --ND ND ----ND ND --ND --ND ND ----
ug/L 05/30/07 10 ND --ND ND ----ND ND --2.8 B --ND 3.2 B --5.7 J
ug/L 11/19/07 10 1.4 B --0.51 B 5.3 ----1.5 B 1.5 B --4.2 --1 B 2.5 B --0.52
ug/L 05/19/08 10 --ND ND --0.85 --0.47 ND --0.96 --ND ND --ND
ug/L 11/19/08 10 --0.55 B ND --1.5 B --0.42 B 0.64 B ------ND 0.67 B 1.5 B 0.36 J
ug/L 06/30/09 10 --3.6 B 3.4 B --8.7 B --5.0 B 5.7 B ------2.1 B 7.6 B 13.1 B 0.6 J
ug/L 11/30/09 10 --ND ND --ND --ND ND ------ND ND ND ND
ug/L 05/20/10 10 --ND ND --2.79 J --1.22 J 1.42 J ------ND ND ND ND
ug/L 11/19/10 10 --ND ND --2.41 J --0.928 J 1.12 J ------ND 0.863 J 2.11 J ND
ug/L 05/19/11 10 --ND ND --2.87 J --1.76 J 2.14 J ----------3.01 J ND
ug/L 11/28/11 10 --ND ND --ND --ND ND ----------ND ND
Silver ug/L 09/19/94 1 ND --ND ND --ND --ND 2.2 --ND --ND ----
NC 2L = 20 ug/L ug/L 12/02/94 1 ND --ND ND --ND --ND ND --ND --ND ----
ug/L 02/07/95 1 ND --ND ND --ND --ND ND --ND --ND ----
ug/L 03/13/95 1 ND --ND ND --ND --ND ND --ND --ND ----
ug/L 11/01/95 1 ND --ND ND --ND --ND ND --ND --ND ----
ug/L 06/10/96 1 ND --ND ND --ND --ND ND --ND --ND ----
ug/L 11/12/96 1 5 --2 ND --ND --ND ND --ND --ND ----
ug/L 03/18/97 1 ND --ND ND --ND --ND 7 --ND --ND ----
ug/L 10/02/97 1 ND --ND ND --ND --ND ND --ND --ND ----
ug/L 05/26/98 1 ND --ND ND --ND --ND ND --ND --1 ----
ug/L 12/01/98 1 1 --ND ND ------ND ND --2 --ND ----
ug/L 06/07/99 1 ND --ND ND ------ND ----ND --ND ----
ug/L 07/08/99 1 ------------ND --ND ------------
ug/L 12/15/99 1 ND --10 ND ----ND ND ND --ND --ND ----
ug/L 06/06/00 1 ND --ND 1 ----ND ND ----ND --ND ----
ug/L 12/27/00 1 ND --ND ND ----ND 2 2 --ND --ND ----
ug/L 06/04/01 1 ND --3 1 ----ND 2 1 --ND --ND ----
ug/L 12/03/01 1 ND --ND 1 ----ND ND ND --ND --ND ----
ug/L 06/10/02 1 ND --ND 1 ----1 ND ND --ND --ND ----
ug/L 12/16/02 1 ND --ND ND ----ND ND ND --ND --ND ----
ug/L 06/09/03 1 ND --ND ND ----ND ND ND --ND --ND ----
ug/L 12/08/03 1 ND --ND ND ----ND 3 ND --ND --ND ----
ug/L 06/29/04 1 8 --1 ND ----ND ND ND --ND ND ND ----
ug/L 12/20/04 1 ND --1 ND ----ND ND --ND --ND ND ----
ug/L 06/05/05 1 ND --ND ND ----ND ND --ND --2 ND ----
ug/L 12/05/05 1 ND --ND ND ----ND ND --ND --ND ND ----
ug/L 06/05/06 1 ND --ND ND ----ND 1 --ND --ND ND ----
ug/L 12/05/06 1 ND --ND 1 ----ND 2 --ND --ND ND ----
ug/L 05/30/07 10 ND --ND ND ----2.0 J ND --2.8 J --ND ND --ND
ug/L 11/19/07 10 ----ND ------ND ND ------ND ND --ND
ug/L 05/19/08 10 --ND ND --ND --ND ND ------ND ND --ND
ug/L 11/19/08 10 --ND ND --ND --ND ND ------ND ND ND ND
ug/L 06/30/09 10 ------------------------------
ug/L 11/30/09 10 --ND ND --ND --ND 2.57 J ------ND ND ND ND
ug/L 05/20/10 10 --ND ND --2.11 J --ND ND ------ND ND ND ND
ug/L 11/19/10 10 --ND ND --ND --ND ND ------ND ND ND ND
ug/L 05/19/11 10 --ND ND --ND --ND ND ----------ND ND
ug/L 11/28/11 10 --ND 2.01 J --ND --ND ND ----------7.19 J ND
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TABLE 4
City of Durham Closed Landfill, Permit #32-01
Blanks
Durham County, North Carolina
Summary of Detected Constituents in Groundwater
SWS Reporting LimitDetected Monitoring
Constituent/Parameter Reporting Units Sample Date DowngradientUpgradient
Thallium ug/L 09/19/94 5 ND --ND ND --ND --6.1 ND --ND --ND ----
SWS GPS = 0.28 ug/L ug/L 12/02/94 5 ND --ND ND --ND --ND ND --ND --ND ----
ug/L 02/07/95 5 ND --ND ND --ND --ND ND --ND --ND ----
ug/L 03/13/95 5 ND --ND ND --ND --ND ND --ND --ND ----
ug/L 11/01/95 5 ND --ND ND --ND --ND ND --ND --ND ----
ug/L 06/10/96 5 ND --ND ND --ND --ND ND --ND --ND ----
ug/L 11/12/96 5 ND --ND ND --ND --ND ND --ND --ND ----
ug/L 03/18/97 5 ND --ND ND --ND --ND ND --ND --ND ----
ug/L 10/02/97 5 ND --ND ND --ND --ND ND --ND --ND ----
ug/L 05/26/98 5 ND --ND ND --ND --ND ND --ND --ND ----
ug/L 12/01/98 5 ND --ND ND ------ND ND --ND --ND ----
ug/L 06/07/99 1 ND --ND ND ------ND ----ND --ND ----
ug/L 07/08/99 1 ------------ND --ND ------------
ug/L 12/15/99 1 ND --ND ND ----ND ND ND --ND --------
ug/L 06/06/00 1 ND --ND ND ----ND ND ----ND --------
ug/L 12/27/00 1 ND --ND ND ----ND 1 ND --ND --------
ug/L 06/04/01 1 ND --ND ND ----ND 1 ND --ND --------
ug/L 12/03/01 1 ND --ND ND ----ND ND ND --ND --------
ug/L 06/10/02 1 ND --ND ND ----ND ND ND --ND --------
ug/L 12/16/02 1 ND --ND ND ----ND ND ND --ND --------
ug/L 06/09/03 1 ND --ND ND ----ND ND ND --ND --------
ug/L 12/08/03 1 ND --ND ND ----ND ND ND --ND --------
ug/L 06/29/04 1 2 --ND ND ----ND ND --ND --ND ND ----
ug/L 12/20/04 1 ND --ND ND ----ND ND --ND --ND ND ----
ug/L 06/05/05 1 ND --ND ND ----ND ND --ND --ND ND ----
ug/L 12/05/05 1 ND --ND ND ----ND ND --ND --ND ND ----
ug/L 06/05/06 1 ND --ND ND ----ND ND --ND --ND ND ----
ug/L 12/05/06 1 ND --ND ND ----ND ND --ND --ND ND ----
ug/L 05/30/07 5.5 0.108 J --ND 0.086 J ----ND ND --ND --ND ND --ND
ug/L 11/19/07 5.5 ----ND ------ND ND ------ND ND --ND
ug/L 05/19/08 5.5 --ND ND --ND --ND ND ------ND ND --ND
ug/L 11/19/08 5.5 --ND ND --ND --ND ND ------ND ND ND ND
ug/L 06/30/09 5.5 --ND ND --ND --ND ND ------ND ND ND ND
ug/L 11/30/09 5.5 --ND ND --ND --3.14 J ND ------ND 0.75 J ND ND
ug/L 05/20/10 5.5 --ND ND --ND --ND ND ------ND ND ND ND
ug/L 11/19/10 5.5 --ND ND --ND --ND ND ------ND ND ND ND
ug/L 05/19/11 5.5 --ND ND --ND --ND ND ----------ND ND
ug/L 11/28/11 5.5 --ND 0.142 J --ND --0.281 J ND ----------ND ND
Vanadium ug/L 09/19/94 5 203 --23 ND --ND --411 167 --16 --122 ----
SWS GPS = 0.3 ug/L ug/L 12/02/94 5 51 --ND ND --ND --124 6.7 --68 --7.9 ----
ug/L 02/07/95 5 206 --ND ND --ND --99 6.9 --37 --6 ----
ug/L 03/13/95 5 16 --ND ND --ND --85 6.7 --9.7 --9.4 ----
ug/L 11/01/95 5 37 --ND 17 --8 --16 ND --5 --7 ----
ug/L 06/10/96 5 50 --ND 34 --67 --14 ND --ND --ND ----
ug/L 11/12/96 5 141 --ND 52 --9 --25 ND --11 --12 ----
ug/L 03/18/97 5 141 --ND 16 --ND --ND ND --ND --ND ----
ug/L 10/02/97 5 65 --ND 17 --ND --ND ND --8.5 --5.8 ----
ug/L 05/26/98 5 20 --ND 5 --ND --ND ND --5 --5 ----
ug/L 12/01/98 5 110 --ND 10 ------ND ND --ND --ND ----
ug/L 06/07/99 5 45 --ND 59 ------11 ----45 --ND ----
ug/L 07/08/99 5 ------------16 --48 ------------
ug/L 12/15/99 5 38 --ND 14 ----ND 6 ND --ND --6 ----
ug/L 06/06/00 5 109 --ND 34 ----ND 23 ----36 --6 ----
ug/L 12/27/00 5 26 --ND 11 ----ND 44 38 --ND --ND ----
ug/L 06/04/01 5 22 --ND ND ----ND ND 6 --ND --ND ----
ug/L 12/03/01 5 25 --ND 19 ----ND 26 38 --16 --ND ----
ug/L 06/10/02 5 12 --ND 13 ----ND 8 27 --ND --9 ----
ug/L 12/16/02 5 7 --ND ND ----ND ND ND --ND --17 ----
ug/L 06/09/03 5 5 --ND ND ----ND ND 8 --6 --9 ----
ug/L 12/08/03 5 46 --ND 8 ----ND 43 13 --ND --5 ----
ug/L 06/29/04 5 59 --ND 6 ----ND 17 --49 --12 ND ----
ug/L 12/20/04 5 8 --ND 7 ----ND 69 --34 --5 5 ----
ug/L 06/05/05 5 27 --ND ND ----ND 17 --ND --17 ND ----
ug/L 12/05/05 5 ND --ND 14 ----ND 16 --ND --ND ND ----
ug/L 06/05/06 5 ND --ND ND ----ND 42 --9 --7 ND ----
ug/L 12/05/06 5 ND --ND ND ----ND 7 --ND --ND ND ----
ug/L 05/30/07 25 5.4 J --ND ND ----ND ND --ND --ND ND --ND
ug/L 11/19/07 25 20 --3.1 J ND ----ND 3.8 --13 --13 17 --ND
ug/L 05/19/08 25 --4.0 ND --9.0 --ND ND --ND --ND ND --ND
ug/L 11/19/08 25 --ND ND --2.3 J --ND ND ------ND ND 3.6 J ND
ug/L 06/30/09 25 --ND ND --1.1 J --ND ND ------ND ND 6.9 J ND
ug/L 11/30/09 25 --1.58 J ND --2.48 J --ND ND ------ND ND 2.29 J ND
ug/L 05/20/10 25 --ND ND --3.25 J --ND ND ------ND 2.60 J 4.70 J ND
ug/L 11/19/10 25 --3.74 J ND --1.47 J --ND ND ------2.03 J ND ND ND
ug/L 05/19/11 25 --ND 3.86 J --1.47 J --ND ND ----------3.89 J ND
ug/L 11/28/11 25 --9.59 J ND --1.77 J --ND ND ----------ND ND
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TABLE 4
City of Durham Closed Landfill, Permit #32-01
Blanks
Durham County, North Carolina
Summary of Detected Constituents in Groundwater
SWS Reporting LimitDetected Monitoring
Constituent/Parameter Reporting Units Sample Date DowngradientUpgradient
Zinc ug/L 09/19/94 10 303 --34 ND --ND --1030 445 --ND --207 ----
NC 2L = 1000 ug/L ug/L 12/02/94 10 106 --ND 17 --ND --202 169 --140 --ND ----
ug/L 02/07/95 10 477 --ND ND --ND --183 76 --74 --70 ----
ug/L 03/13/95 10 291 --ND 17 --17 --185 150 --114 --59 ----
ug/L 11/01/95 10 65 --ND 12 --13 --225 ND --15 --ND ----
ug/L 06/10/96 10 125 --ND 69 --ND --ND ND --ND --ND ----
ug/L 11/12/96 10 134 --ND 132 --12 --26 22 --16 --11 ----
ug/L 03/18/97 10 ND --ND 30 --ND --ND ND --ND --ND ----
ug/L 10/02/97 10 96 --23 52 --ND --ND ND --19 --ND ----
ug/L 05/26/98 10 20 --ND ND --ND --ND ND --ND --ND ----
ug/L 12/01/98 10 121 --11 16 ------ND 12 --ND --ND ----
ug/L 06/07/99 10 77 --31 87 ------31 ----156 --92 ----
ug/L 07/08/99 10 ------------64 --198 ------------
ug/L 12/15/99 10 100 --38 56 ----56 50 22 --26 --33 ----
ug/L 06/06/00 10 267 --17 20 ----ND 28 ----67 --ND ----
ug/L 12/27/00 10 100 --28 22 ----257 414 200 --46 --ND ----
ug/L 06/04/01 10 80 --24 60 ----162 269 96 --191 --121 ----
ug/L 12/03/01 10 73 --59 39 ----214 55 87 --37 --249 ----
ug/L 06/10/02 10 41 --52 27 ----141 20 93 --68 --168 ----
ug/L 12/16/02 10 27 --12 34 ----26 14 150 --28 --37 ----
ug/L 06/09/03 10 12 --19 49 ----10 ND 72 --19 --27 ----
ug/L 12/08/03 10 261 --18 16 ----13 216 212 --11 --11 ----
ug/L 06/29/04 10 369 --18 15 ----ND 35 --226 --59 ND ----
ug/L 12/20/04 10 17 --52 35 ----ND 134 --77 --15 13 ----
ug/L 06/05/05 10 56 --44 ND ----ND 103 --16 --55 20 ----
ug/L 12/05/05 10 ND --74 28 ----ND 35 --10 --ND ND ----
ug/L 06/05/06 10 14 --31 11 ----ND 98 --24 --18 ND ----
ug/L 12/05/06 10 ND --14 16 ----ND 26 --ND --ND ND ----
ug/L 05/30/07 10 18.4 --10.4 B ND ----1.1 B 3.3 B --6.8 B --12.3 4.4 B --2.4 J
ug/L 11/19/07 10 160 --21 55 ----20 58 --100 --66 52 --90
ug/L 05/19/08 10 --12 8.7 --45 --30 54 --23 --34 4.6 --ND
ug/L 11/19/08 10 --7.7 J 14 --23 --22 58 ------26 9.8 J 26 ND
ug/L 06/30/09 10 --5.8 B 7.9 B --3.5 B --ND ND ------4.7 B ND 22.4 B 15.2
ug/L 11/30/09 10 --5.99 J 6.40 J --3.93 J --ND ND ------ND 11.7 19.9 ND
ug/L 05/20/10 10 --5.76 J 4.95 J --ND --ND ND ------ND 4.15 J 90.3 ND
ug/L 11/19/10 10 --ND ND --ND --ND ND ------ND ND 11.5 ND
ug/L 05/19/11 10 --6.26 B 7.80 B --ND --ND ND ----------9.03 B 4.26 J
ug/L 11/28/11 10 --21.7 18.6 --ND --ND ND ----------26.6 ND
Benzene ug/L 09/19/94 ----------------------ND --ND ----
NC 2L= 1 ug/L ug/L 12/02/94 5 ND --ND ND --ND --ND ND --ND --ND ----
ug/L 02/07/95 --ND --ND ND --ND --ND ND --ND --ND ----
ug/L 03/13/95 --ND --ND ND --ND --ND ND --ND --ND ----
ug/L 11/01/95 5 ND --ND ND --ND --ND ND --ND --ND ----
ug/L 06/10/96 1 ND --ND 2 --ND --ND ND --ND --ND ----
ug/L 09/03/96 --------1.8 ----------------------
ug/L 10/02/96 --------1.2 ----------------------
ug/L 11/12/96 1 ND --ND 1.7 --ND --ND ND --ND --ND ----
ug/L 03/18/97 1 ND --ND 1.6 --ND --ND ND --ND --ND ----
ug/L 10/02/97 1 ND --ND 2.1 --ND --ND ND --ND --ND ----
ug/L 05/26/98 1 ND --ND ND --ND --ND ND --ND --ND --ND
ug/L 12/01/98 1 ND --ND ND ------ND ND --ND --ND --ND
ug/L 06/07/99 5 ND --ND ND ------ND ----ND --ND ----
ug/L 07/08/99 5 ------------ND --ND ----------ND
ug/L 12/15/99 5 ND --ND ND ----ND ND ND --ND --ND --ND
ug/L 06/06/00 5 ND --ND ND ----ND ND ----ND --ND --ND
ug/L 12/27/00 5 ND --ND ND ----ND ND ND --ND --ND --ND
ug/L 06/04/01 5 ND --ND ND ----ND ND ND --ND --ND --ND
ug/L 12/03/01 5 ND --ND ND ----ND ND ND --ND --ND --ND
ug/L 06/10/02 5 ND --ND ND ----ND ND ND --ND --ND --ND
ug/L 12/16/02 5 ND --ND ND ----ND ND ND --ND --ND --ND
ug/L 06/09/03 5 ND --ND ND ----ND ND ND --ND --ND --ND
ug/L 12/08/03 3 ND --ND 0.83 J ----ND ND ND --ND --ND --ND
ug/L 06/29/04 3 ND --ND ND ----ND ND --ND --ND ND --ND
ug/L 12/20/04 0.5 ND --ND ND ----ND ND --ND --ND ND --ND
ug/L 06/05/05 0.5 ND --ND 1.1 ----ND ND --2.7 --ND ND --ND
ug/L 12/05/05 0.5 ND --ND 0.9 ----ND ND --2.8 --ND ND --ND
ug/L 06/05/06 0.5 ND --ND 0.87 ----ND ND --3.8 --ND ND --ND
ug/L 12/05/06 0.5 ND --ND ND ----ND ND --3.4 --ND ND --ND
ug/L 05/30/07 1 ND --ND 0.47 J ----ND ND --2.6 --ND ND --ND
ug/L 11/19/07 1 ND --ND 0.52 ----ND ND --3.1 --ND ND --ND
ug/L 05/19/08 1 --ND ND --ND --ND ND --4.3 --ND ND --ND
ug/L 11/19/08 1 --ND ND --ND --ND ND ------ND ND 4.0 ND
ug/L 06/30/09 1 --ND ND --ND --ND ND ------ND ND 4.6 ND
ug/L 11/30/09 1 --ND ND --ND --ND ND ------ND ND 1.8 ND
ug/L 05/20/10 1 --ND ND --ND --ND ND ------ND ND 0.89 J ND
ug/L 11/19/10 1 --ND ND --ND --ND ND ------ND ND 2.3 ND
ug/L 05/19/11 1 --ND ND --ND --ND ND ----------1.7 ND
ug/L 11/28/11 1 --ND ND --ND --ND ND ----------1.6 ND
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TABLE 4
City of Durham Closed Landfill, Permit #32-01
Blanks
Durham County, North Carolina
Summary of Detected Constituents in Groundwater
SWS Reporting LimitDetected Monitoring
Constituent/Parameter Reporting Units Sample Date DowngradientUpgradient
Chlorobenzene ug/L 09/19/94 --ND --ND ND ------ND ND --ND --ND ----
NC 2L= 50 ug/L ug/L 12/02/94 --ND --ND ND ------ND ND --ND --ND ----
ug/L 02/07/95 --ND --ND ND ------ND ND --ND --ND ----
ug/L 03/13/95 --ND --ND ND ------ND ND --ND --ND ----
ug/L 11/01/95 --ND --ND ND ------ND ND --ND --ND ----
ug/L 06/10/96 --ND --ND ND ------ND ND --ND --ND ----
ug/L 09/03/96 --ND --ND ND ------ND ND --ND --ND ----
ug/L 10/02/96 --ND --ND ND ------ND ND --ND --ND ----
ug/L 11/12/96 --ND --ND ND ------ND ND --ND --ND ----
ug/L 03/18/97 --ND --ND ND ------ND ND --ND --ND ----
ug/L 10/02/97 --ND --ND ND ------ND ND --ND --ND ----
ug/L 12/01/98 --ND --ND ND ------ND ND --ND --ND ----
ug/L 06/07/99 --ND --ND ND ------ND ND --ND --ND ----
ug/L 07/08/99 --ND --ND ND ----ND ND ND --ND --ND ----
ug/L 12/15/99 --ND --ND ND ----ND ND ND --ND --ND ----
ug/L 06/06/00 --ND --ND ND ----ND ND ND --ND --ND ----
ug/L 12/27/00 --ND --ND ND ----ND ND ND --ND --ND ----
ug/L 06/04/01 --ND --ND ND ----ND ND ND --ND --ND ----
ug/L 12/03/01 --ND --ND ND ----ND ND ND --ND --ND ----
ug/L 06/10/02 --ND --ND ND ----ND ND ND --ND --ND ----
ug/L 12/16/02 --ND --ND ND ----ND ND ND --ND --ND ----
ug/L 06/09/03 --ND --ND ND ----ND ND ND --ND --ND ----
ug/L 12/08/03 1 ND --ND 1 J ----ND ND ND ND ND --ND --ND
ug/L 06/29/04 1 ND --ND ND ----ND ND ND ND ND --ND --ND
ug/L 12/20/04 1 ND --ND 1.2 ----ND ND --ND --ND ND --ND
ug/L 06/05/05 1 ND --ND 1.4 ----ND ND --ND --ND ND --ND
ug/L 12/05/05 1 ND --ND ND ----ND ND --ND --ND ND --ND
ug/L 06/05/06 1 ND --ND 1.6 ----ND ND --0.73 J --ND ND --ND
ug/L 12/05/06 1 ND --ND ND ----ND ND ------ND ND --ND
ug/L 05/30/07 3 ND --ND ND ----ND ND --1.6 J --ND ND --ND
ug/L 11/19/07 3 ND --ND 0.71 ----ND ND --0.66 --ND ND --ND
ug/L 05/19/08 3 --ND ND --ND --ND ND --0.73 --ND ND --ND
ug/L 11/19/08 3 --ND ND --ND --ND ND ------ND ND --ND
ug/L 06/30/09 3 --ND ND --0.41 J --ND ND ------ND ND ND ND
ug/L 11/30/09 3 --ND ND --ND --ND ND ------ND ND ND ND
ug/L 05/20/10 3 --ND ND --ND --ND ND ------ND ND ND ND
ug/L 11/19/10 3 --ND ND --ND --ND ND ------ND ND ND ND
ug/L 05/19/11 3 --ND ND --ND --ND ND ----------ND ND
ug/L 11/28/11 3 --ND ND --ND --ND ND ----------ND ND
1,4-Dichlorobenzene ug/L 12/08/03 1 ND --ND 0.87 J ----ND ND ND --ND --ND --ND
NC 2L=6 ug/L ug/L 06/28/04 1 ND --ND ND ----ND ND --ND --ND ND --ND
ug/L 12/20/04 1 ND --ND ND ----ND ND --2.5 --ND ND --ND
ug/L 06/05/05 1 ND --ND ND ----ND ND --2.5 --ND ND --ND
ug/L 12/05/05 1 ND --ND 1.0 ----ND ND --3.5 --ND ND --ND
ug/L 06/05/06 1 ND --ND 1.2 ----ND ND --3.6 --ND ND --ND
ug/L 12/05/06 1 ND --ND ND ----ND ND --4.4 --ND ND --ND
ug/L 05/30/07 1 ND --ND ND ----ND ND --3.4 --ND ND --ND
ug/L 11/19/07 1 ND --ND ND ----ND ND --3.7 --ND ND --ND
ug/L 05/19/08 1 --ND ND --ND --ND ND --4.6 --ND ND --ND
ug/L 11/19/08 1 --ND ND --ND --ND ND ------ND ND 1.3 J ND
ug/L 06/30/09 1 --ND ND --ND --ND ND ------ND ND 2.2 J ND
ug/L 11/30/09 1 --ND ND --ND --ND ND ------ND ND 0.77 J ND
ug/L 05/20/10 1 --ND ND --ND --ND ND ------ND ND 0.65 J ND
ug/L 11/19/10 1 --ND ND --ND --ND ND ------ND ND 0.92 J ND
ug/L 05/19/11 1 --ND ND --ND --ND ND ----------ND ND
ug/L 11/28/11 1 --ND ND --ND --ND ND ----------ND ND
1,1-Dichloroethane ug/L 12/08/03 5 ND --ND ND ----ND ND ND --ND --ND --ND
NC 2L= 6 ug/L ug/L 06/28/04 5 ND --ND ND ----ND ND --3.7 J --ND ND --ND
ug/L 12/20/04 1 ND --ND ND ----ND ND --4.4 --ND ND --ND
ug/L 06/05/05 1 ND --ND ND ----ND ND --5.3 --ND ND --ND
ug/L 12/05/05 1 ND --ND ND ----ND ND --4.3 --ND ND --ND
ug/L 06/05/06 1 ND --ND ND ----ND ND --4.5 --ND ND --ND
ug/L 12/05/06 1 ND --ND ND ----ND ND --4.2 --ND ND --ND
ug/L 05/30/07 5 ND --ND ND ----ND ND --3.6 J --ND ND --ND
ug/L 11/19/07 5 ND --ND ND ----ND ND --5.6 --ND ND --ND
ug/L 05/19/08 5 --ND ND --ND --ND ND --4.2 --ND ND --ND
ug/L 11/19/08 5 --ND ND --ND --ND ND ------ND ND 9.8 ND
ug/L 06/30/09 5 --ND ND --ND --ND ND ------ND ND 7.8 ND
ug/L 11/30/09 5 --ND ND --ND --ND ND ------ND ND 4.2 J ND
ug/L 05/20/10 5 --ND ND --ND --ND ND ------ND ND 1.6 J ND
ug/L 11/19/10 5 --ND ND --ND --ND ND ------ND ND 5.3 ND
ug/L 05/19/11 5 --ND ND --ND --ND ND ----------3.2 J ND
ug/L 11/28/11 5 --ND ND --ND --ND ND ----------3.1 J ND
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TABLE 4
City of Durham Closed Landfill, Permit #32-01
Blanks
Durham County, North Carolina
Summary of Detected Constituents in Groundwater
SWS Reporting LimitDetected Monitoring
Constituent/Parameter Reporting Units Sample Date DowngradientUpgradient
cis-1,2-dichloroethene ug/L 09/22/94 --------------------------------
NC 2L= 70 ug/L ug/L 12/02/94 --------------------------------
ug/L 02/07/95 --ND --ND ND --ND --ND ND --ND --ND ----
ug/L 03/13/95 --ND --ND ND --ND --ND ND --ND --ND ----
ug/L 11/01/95 5 ND --ND ND --ND --ND ND --ND --ND ----
ug/L 06/07/96 1 ND --ND ND --ND --ND ND --ND --ND ----
ug/L 09/03/96 --------1.0 ----------------------
ug/L 11/13/96 1 ND --ND ND --ND --ND ND --ND --ND ----
ug/L 03/18/97 1 ND --ND ND --ND --ND ND --ND --ND ----
ug/L 10/02/97 1 ND --ND ND --ND --ND ND --ND --ND ----
ug/L 12/01/98 2 ND --ND ND ------ND ND --ND --ND --ND
ug/L 06/07/99 5 ND --ND ND ------ND ----ND --ND --ND
ug/L 07/08/99 5 ------------ND --ND ------------
ug/L 12/15/99 5 ND --ND ND ----ND ND ND --ND --ND --ND
ug/L 06/06/00 5 ND --ND ND ----ND ND ----ND --ND --ND
ug/L 12/13/00 5 ND --ND ND ----ND ND ----ND --ND --ND
ug/L 06/04/01 5 ND --ND ND ----ND ND ND --ND --ND --ND
ug/L 12/03/01 5 ND --ND ND ----ND ND ND --ND --ND --ND
ug/L 06/10/02 5 ND --ND ND ----ND ND ND --ND --ND --ND
ug/L 12/16/02 5 ND --ND ND ----ND ND ND --ND --ND --ND
ug/L 06/09/03 5 ND --ND ND ----ND ND ND --ND --ND --ND
ug/L 12/08/03 5 ND --ND ND ----ND ND ND --ND --ND --ND
ug/L 06/28/04 5 ND --ND ND ----ND ND --46 --ND ND --ND
ug/L 12/20/04 1 ND --ND ND ----ND ND --45 --ND ND --ND
ug/L 06/05/05 1 ND --ND ND ----ND ND --90 --ND ND --ND
ug/L 12/05/05 1 ND --1.1 ND ----ND ND --68 --ND ND --ND
ug/L 06/05/06 1 ND --ND ND ----ND ND --97 --ND ND --ND
ug/L 12/05/06 1 ND --ND ND ----ND ND --78 --ND ND --ND
ug/L 05/30/07 5 ND --ND ND ----ND ND --89 --ND ND --ND
ug/L 11/19/07 5 ND --0.62 ND ----ND ND --98 --ND ND --ND
ug/L 05/19/08 5 --ND ND --ND --ND ND --140 --ND ND --ND
ug/L 11/19/08 5 --ND 0.84 J --ND --ND ND ------ND ND 370 ND
ug/L 06/30/09 5 --ND ND --ND --ND ND ------ND ND 370 ND
ug/L 11/30/09 5 --ND ND --ND --ND ND ------ND ND 190 ND
ug/L 05/20/10 5 --ND ND --ND --ND ND ------ND ND 86 ND
ug/L 11/19/10 5 --ND 1.4 J --ND --ND ND ------ND ND 210 ND
ug/L 05/19/11 5 --ND ND --ND --ND ND ----------110 ND
ug/L 11/28/11 5 --ND 3.7 J --ND --ND ND ----------140 ND
trans-1,2-Dichloroethene ug/L 12/08/03 5 ND --ND ND ----ND ND ND --ND --ND --ND
NC 2L= 100 ug/L ug/L 06/28/04 5 ND --ND ND ----ND ND --2.6 J --ND ND --ND
ug/L 12/20/04 2 ND --ND ND ----ND ND --3.5 --ND ND --ND
ug/L 06/05/05 2 ND --ND ND ----ND ND --4.4 --ND ND --ND
ug/L 12/05/05 2 ND --ND ND ----ND ND --3.8 --ND ND --ND
ug/L 06/05/06 2 ND --ND ND ----ND ND --5.1 --ND ND --ND
ug/L 12/05/06 2 ND --ND ND ----ND ND --4.5 --ND ND --ND
ug/L 05/30/07 5 ND --ND ND ----ND ND --3.7 J --ND ND --ND
ug/L 11/19/07 5 ND --ND ND ----ND ND --5.9 --ND ND --ND
ug/L 05/19/08 5 --ND ND --ND --ND ND --5.7 --ND ND --ND
ug/L 11/19/08 5 --ND ND --ND --ND ND ------ND ND 12.0 ND
ug/L 06/30/09 5 --ND ND --ND --ND ND ------ND ND 9.7 ND
ug/L 11/30/09 5 --ND ND --ND --ND ND ------ND ND 4.7 J ND
ug/L 05/20/10 5 --ND ND --ND --ND ND ------ND ND 1.8 J ND
ug/L 11/19/10 5 --ND ND --ND --ND ND ------ND ND 4.9 J ND
ug/L 05/19/11 5 --ND ND --ND --ND ND ----------4.2 J ND
ug/L 11/28/11 5 --ND ND --ND --ND ND ----------3.4 J ND
1,2-Dichloropropane ug/L 12/08/03 5 ND --ND ND ----ND ND ND --ND --ND --ND
NC 2L= 0.6 ug/L ug/L 06/28/04 5 ND --ND ND ----ND ND --ND --ND ND --ND
ug/L 12/20/04 1 ND --ND ND ----ND ND --1.8 --ND ND --ND
ug/L 06/05/05 1 ND --ND ND ----ND ND --2.4 --ND ND --ND
ug/L 12/05/05 1 ND --ND ND ----ND ND --2.4 --ND ND --ND
ug/L 06/05/06 1 ND --ND ND ----ND ND --3.5 --ND ND --ND
ug/L 12/05/06 1 ND --ND ND ----ND ND --2.3 --ND ND --ND
ug/L 05/30/07 1 ND --ND ND ----ND ND --2.0 --ND ND --ND
ug/L 11/19/07 1 ND --ND ND ----ND ND --2.8 --ND ND --ND
ug/L 05/19/08 1 --ND ND --ND --ND ND --3.3 --ND ND --ND
ug/L 11/19/08 1 --ND ND --ND --ND ND ------ND ND 11.0 ND
ug/L 06/30/09 5 --ND ND --ND --ND ND ------ND ND 9.4 ND
ug/L 11/30/09 5 --ND ND --ND --ND ND ------ND ND 4.7 ND
ug/L 05/20/10 5 --ND ND --ND --ND ND ------ND ND 1.9 ND
ug/L 11/19/10 5 --ND ND --ND --ND ND ------ND ND 5.6 ND
ug/L 05/19/11 5 --ND ND --ND --ND ND ----------2.2 ND
ug/L 11/28/11 1 --ND ND --ND --ND ND ----------4.0 ND
Ethylbenzene ug/L 05/30/07 1 ND --ND ND ----ND ND ND ----ND ND --ND
NC 2L = 600 ug/L ug/L 11/19/07 1 0.38 --0.6 0.48 ----ND ND --ND --ND ND --ND
ug/L 05/19/08 1 --ND ND --ND --ND ND --ND --ND ND --ND
ug/L 11/19/08 1 --ND ND --ND --ND ND ------ND ND ND ND
ug/L 06/30/09 1 --ND ND --ND --ND ND ------ND ND ND ND
ug/L 11/30/09 1 --ND ND --ND --ND ND ------ND ND ND ND
ug/L 05/20/10 1 --ND ND --ND --ND ND ------ND ND ND ND
ug/L 11/19/10 1 --ND ND --ND --ND ND ------ND ND ND ND
ug/L 05/19/11 1 --ND ND --ND --ND ND ----------ND ND
ug/L 11/28/11 1 --ND ND --ND --ND ND ----------ND ND
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TABLE 4
City of Durham Closed Landfill, Permit #32-01
Blanks
Durham County, North Carolina
Summary of Detected Constituents in Groundwater
SWS Reporting LimitDetected Monitoring
Constituent/Parameter Reporting Units Sample Date DowngradientUpgradient
Methylene Chloride ug/L 09/22/94 ----------------------14.6 --ND ----
NC 2L= 5 ug/L ug/L 12/02/94 5 ND --ND ND --ND --ND ND --ND --ND ----
ug/L 02/07/95 5 ND --ND ND --ND --ND ND --ND --ND ----
ug/L 03/13/95 5 ND --ND ND --ND --ND ND --ND --ND ----
ug/L 11/01/95 5 ND --ND ND --ND --ND ND --ND --ND ----
ug/L 06/07/96 5 ND --ND ND --ND --ND ND --ND --ND ----
ug/L 11/13/96 5 ND --ND ND --ND --ND ND --ND --ND ----
ug/L 03/18/97 5 ND --ND ND --ND --ND ND --ND --ND ----
ug/L 10/02/97 5 ND --ND ND --ND --22 ND --ND --ND ----
ug/L 05/26/98 5 ND --ND ND --ND --ND ND --ND --ND ----
ug/L 12/01/98 5 ND --ND ND ------ND ND --ND --ND --ND
ug/L 06/07/99 5 ND --ND ND ------ND ----ND --ND --ND
ug/L 07/08/99 5 ------------ND --ND ------------
ug/L 12/15/99 5 ND --ND ND ----ND ND ND --ND --ND --ND
ug/L 06/06/00 5 ND --ND ND ----ND ND ----ND --ND --ND
ug/L 12/22/00 5 ND --ND ND ----ND ND ND --ND --ND --ND
ug/L 06/04/01 5 ND --ND ND ----ND ND ND --ND --ND --ND
ug/L 12/03/01 5 77 --92 66 ----ND 68 91 --68 --66 --ND
ug/L 06/10/02 5 ND --ND ND ----ND ND ND --ND --ND --ND
ug/L 12/16/02 5 ND --ND ND ----ND ND ND --ND --ND --ND
ug/L 06/09/03 5 ND --ND ND ----ND ND ND --ND --ND --ND
ug/L 12/08/03 5 ND --ND ND ----ND ND ND --ND --ND --ND
ug/L 06/28/04 5 ND --ND ND ----ND ND --ND --ND ND --ND
ug/L 12/20/04 2 ND --ND ND ----ND ND --ND --ND ND --ND
ug/L 06/05/05 2 ND --ND ND ----ND ND --ND --ND ND --ND
ug/L 12/05/05 2 ND --ND ND ----ND ND --ND --ND ND --ND
ug/L 06/05/06 2 ND --ND ND ----ND ND --ND --ND ND --ND
ug/L 12/05/06 2 ND --ND ND ----ND ND --ND --ND ND --ND
ug/L 05/30/07 1 ND --ND ND ----ND ND --ND --ND ND --ND
ug/L 11/19/07 1 0.42 --0.47 0.046 ----ND ND --ND --ND ND --0.49
ug/L 05/19/08 1 --ND ND --ND --ND ND --ND --ND ND --ND
ug/L 11/19/08 1 --ND ND --ND --ND ND ------ND ND ND ND
ug/L 06/30/09 1 --ND ND --ND --ND ND ------ND ND ND ND
ug/L 11/30/09 1 --ND ND --ND --ND ND ------ND ND ND ND
ug/L 05/20/10 1 --ND ND --ND --ND ND ------ND ND ND ND
ug/L 11/19/10 1 --ND ND --ND --ND ND ------ND ND ND ND
ug/L 05/19/11 1 --ND ND --ND --ND ND ----------ND ND
ug/L 11/28/11 1 --ND ND --ND --ND ND ----------ND ND
Tetrachloroethene ug/L 06/05/05 1 ND --ND ND ----ND ND --1.9 --ND ND --ND
NC 2L= 0.7 ug/L ug/L 12/05/05 1 ND --ND ND ----ND ND --ND --ND ND --ND
ug/L 06/05/06 1 ND --ND ND ----ND ND --1.9 --ND ND --ND
ug/L 12/05/06 1 ND --ND ND ----ND ND --0.55 J --ND ND --ND
ug/L 05/30/07 1 ND --ND ND ----ND ND --0.64 J --ND ND --ND
ug/L 11/19/07 1 ND --ND ND ----ND ND --0.46 --ND ND --ND
ug/L 05/19/08 1 --ND ND --ND --ND ND --ND --ND ND --ND
ug/L 11/19/08 1 --ND ND --ND --ND ND ------ND ND 1.8 ND
ug/L 06/30/09 1 --ND ND --ND --ND ND ------ND ND 2.6 J ND
ug/L 11/30/09 1 --ND ND --ND --ND ND ------ND ND 0.60 J ND
ug/L 05/20/10 1 --ND ND --ND --ND ND ------ND ND 0.42 J ND
ug/L 11/19/10 1 --ND ND --ND --ND ND ------ND ND ND ND
ug/L 05/19/11 1 --ND ND --ND --ND ND ----------ND ND
ug/L 11/28/11 1 --ND ND --ND --ND ND ----------ND ND
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TABLE 4
City of Durham Closed Landfill, Permit #32-01
Blanks
Durham County, North Carolina
Summary of Detected Constituents in Groundwater
SWS Reporting LimitDetected Monitoring
Constituent/Parameter Reporting Units Sample Date DowngradientUpgradient
Toluene ug/L 09/19/94 ----------------------ND --ND ----
NC 2L= 600 ug/L ug/L 12/02/94 5 ND --ND ND --ND --ND ND --ND --ND ----
ug/L 02/07/95 5 ND --ND ND --ND --ND ND --ND --ND ----
ug/L 03/13/95 5 ND --ND ND --ND --ND ND --ND --ND ----
ug/L 11/01/95 5 ND --ND ND --ND --ND ND --ND --ND ----
ug/L 06/10/96 1 ND --ND ND --1.9 B --ND ND --ND --ND ----
ug/L 11/12/96 1 ND --ND 1.7 --1.2 --ND ND --1.2 --ND ----
ug/L 03/18/97 1 ND --ND ND --ND --ND ND --ND --ND ----
ug/L 10/02/97 1 ND --ND ND --ND --ND ND --ND --ND ----
ug/L 05/26/98 1 ND --ND ND --ND --ND ND --ND --ND ----
ug/L 12/01/98 1 ND --ND ND ------ND ND --ND --ND --ND
ug/L 06/07/99 5 ND --ND ND ------ND ----ND --ND --ND
ug/L 07/08/99 5 ------------ND --ND ------------
ug/L 12/15/99 5 ND --ND ND ----ND ND ND --ND --ND --ND
ug/L 06/06/00 5 ND --ND ND ----ND ND ----ND --ND --ND
ug/L 12/22/00 5 ND --ND ND ----ND ND ND --ND --ND --ND
ug/L 06/04/01 5 ND --ND ND ----ND ND ND --ND --ND --ND
ug/L 12/03/01 5 ND --ND ND ----ND ND ND --ND --ND --ND
ug/L 06/10/02 5 ND --ND ND ----ND ND ND --ND --ND --ND
ug/L 12/16/02 5 ND --ND ND ----ND ND ND --ND --ND --ND
ug/L 06/09/03 5 ND --ND ND ----ND ND ND --ND --ND --ND
ug/L 12/08/03 5 ND --ND ND ----ND ND ND --ND --ND --ND
ug/L 06/29/04 5 ND --ND ND ----ND ND --ND --ND ND --ND
ug/L 12/20/04 1 ND --ND ND ----ND ND --ND --ND ND --ND
ug/L 06/05/05 1 ND --ND ND ----ND ND --ND --ND ND --ND
ug/L 12/05/05 1 ND --ND ND ----ND ND --ND --ND ND --ND
ug/L 06/05/06 1 ND --ND ND ----ND ND --ND --ND ND --ND
ug/L 12/05/06 1 ND --ND ND ----ND ND --1.2 --ND ND --ND
ug/L 05/30/07 1 ND --ND ND ----ND ND --ND --ND ND --0.33 J
ug/L 11/19/07 1 ND --0.37 ND ----ND ND --ND --ND ND --ND
ug/L 05/19/08 1 --ND ND --ND --ND ND --ND --0.45 ND --0.66
ug/L 11/19/08 1 --ND ND --ND --ND ND ------ND ND ND ND
ug/L 06/30/09 1 --ND ND --ND --ND ND ------ND ND ND ND
ug/L 11/30/09 1 --ND ND --ND --ND ND ------ND ND ND ND
ug/L 05/20/10 1 --ND ND --ND --ND ND ------ND ND ND ND
ug/L 11/19/10 1 --ND ND --ND --ND ND ------ND ND ND ND
ug/L 05/19/11 1 --ND ND --ND --ND ND ----------ND ND
ug/L 11/28/11 1 --ND ND --ND --ND ND ----------ND ND
Trichloroethene ug/L 12/08/03 5 ND --ND ND ----ND ND ND --ND --ND --ND
NC 2L= 3 ug/L ug/L 06/28/04 5 ND --ND ND ----ND ND --3.4 J --ND ND --ND
ug/L 12/20/04 2 ND --ND ND ----ND ND --3.5 --ND ND --ND
ug/L 06/05/05 2 ND --ND ND ----ND ND --4.7 --ND ND --ND
ug/L 12/05/05 2 ND --ND ND ----ND ND --3.9 --ND ND --ND
ug/L 06/05/06 2 ND --ND ND ----ND ND --2.9 --ND ND --ND
ug/L 12/05/06 2 ND --ND ND ----ND ND --2.2 --ND ND --ND
ug/L 05/30/07 1 ND --ND ND ----ND ND --2.6 --ND ND --ND
ug/L 11/19/07 1 ND --ND ND ----ND ND --3.1 --ND ND --ND
ug/L 05/19/08 1 --ND ND --ND --ND ND --1.6 --ND ND --ND
ug/L 11/19/08 1 --ND ND --ND --ND ND ------ND ND 30.0 ND
ug/L 06/30/09 1 --ND ND --ND --ND ND ------ND ND 38 ND
ug/L 11/30/09 1 --ND ND --ND --ND ND ------ND ND 14 ND
ug/L 05/20/10 1 --ND ND --ND --ND ND ------ND ND 6.9 ND
ug/L 11/19/10 1 --ND ND --ND --ND ND ------ND ND 9.5 ND
ug/L 05/19/11 1 --ND ND --ND --ND ND ----------12.0 ND
ug/L 11/28/11 1 --ND ND --ND --ND ND ----------5.9 ND
Vinyl Chloride ug/L 12/08/03 10 ND --ND ND ----ND ND ND --ND --ND --ND
NC 2L= 0.03 ug/L ug/L 06/28/04 10 ND --ND ND ----ND ND --9.9 J --ND ND --ND
ug/L 12/20/04 2 ND --ND ND ----ND ND --12 --ND ND --ND
ug/L 06/05/05 2 ND --ND ND ----ND ND --16 --ND ND --ND
ug/L 12/05/05 2 ND --ND ND ----ND ND --13 --ND ND --ND
ug/L 06/05/06 2 ND --ND ND ----ND ND --16 --ND ND --ND
ug/L 12/05/06 2 ND --ND ND ----ND ND --15 --ND ND --ND
ug/L 05/30/07 1 ND --ND ND ----ND ND --14 --ND ND --ND
ug/L 11/19/07 1 ND --ND ND ----ND ND --23 --ND ND --ND
ug/L 05/19/08 1 --ND ND --ND --ND ND --21 --ND ND --ND
ug/L 11/19/08 1 --ND ND --ND --ND ND ------ND ND 25 ND
ug/L 06/30/09 1 --ND ND --ND --ND ND ------ND ND 23 ND
ug/L 11/30/09 1 --ND ND --ND --ND ND ------ND ND 17 ND
ug/L 05/20/10 1 --ND ND --ND --ND ND ------ND ND 6.8 ND
ug/L 11/19/10 1 --ND ND --ND --ND ND ------ND ND 17 ND
ug/L 05/19/11 1 --ND ND --ND --ND ND ----------12 ND
ug/L 11/28/11 1 --ND ND --ND --ND ND ----------9.9 ND
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TABLE 4
City of Durham Closed Landfill, Permit #32-01
Blanks
Durham County, North Carolina
Summary of Detected Constituents in Groundwater
SWS Reporting LimitDetected Monitoring
Constituent/Parameter Reporting Units Sample Date DowngradientUpgradient
pH (field)S.U.05/26/98 --7.30 --6.00 6.20 --7.4 --7.20 6.50 --7.00 --7.30 ----
S.U.12/01/98 --7.10 --5.00 6.00 ------6.70 6.60 --5.90 --6.50 ----
S.U.06/07/99 --6.98 --6.19 5.99 ------6.70 ----6.45 --5.98 ----
S.U.07/08/99 --------------7.29 --6.36 ------------
S.U.12/13/99 --7.21 --5.37 5.72 ----6.96 6.88 ----6.68 --5.96 ----
S.U.06/06/00 --7.75 --5.80 6.14 ----7.31 7.15 dry --7.04 --6.38 ----
S.U.12/11/00 --7.92 --5.82 6.11 ----7.14 7.36 6.47 --6.94 --6.36 ----
S.U.06/04/01 --7.75 --5.65 6.21 ----7.02 7.27 6.43 --6.39 --6.60 ----
S.U.12/03/01 --7.64 --5.45 5.92 ----7.04 7.18 6.40 --6.27 --6.40 ----
S.U.06/10/02 --7.71 --5.81 5.95 ----6.74 6.07 6.50 --7.3 --6.51 ----
S.U.12/16/02 --7.84 --5.67 6.20 ----7.27 7.60 5.83 --7.21 --6.24 ----
S.U.06/09/03 --7.91 --5.44 6.08 ----7.08 7.23 5.78 --7.18 --6.46 ----
S.U.12/09/03 --8.71 --5.9 6.87 ----7.67 --6.76 --8.01 --7.07 ----
S.U.06/24/04 --7.76 --5.78 6.12 ----6.96 7.30 --5.84 --7.51 6.37 ----
S.U.12/20/04 --7.78 --7.39 7.70 ----7.52 7.68 --7.71 --7.85 7.58 ----
S.U.06/08/05 --7.76 --5.68 6.20 ----6.94 7.23 --5.71 --7.79 6.52 ----
S.U.12/07/05 --7.73 --5.76 6.08 ----7.13 7.16 --5.63 --7.74 6.09 ----
S.U.06/05/06 --7.63 --5.93 6.13 ----7.01 7.19 --5.81 --7.78 6.76 ----
S.U.12/05/06 --7.62 --5.85 6.23 ----7.06 6.95 --5.65 --7.73 6.53 ----
S.U.05/30/07 --7.07 --6.12 7.17 ----6.67 8.57 --6.52 --7.23 5.55 ----
S.U.11/19/07 --6.21 --5.27 6.19 ----7.51 6.99 --5.79 --7.3 6.92 ----
S.U.05/19/08 ----6.40 5.21 --6.27 --6.85 7.11 --5.62 --7.78 6.14 ----
S.U.11/19/08 ----4.82 5.74 --6.4 --7.05 7.18 ------7.87 6.19 5.87 --
S.U.06/30/09 ----4.63 5.76 --6.13 --6.82 6.94 ------7.52 6.06 5.54 --
S.U.11/30/09 ----4.77 5.38 --7.06 --7.01 7.10 ------7.72 6.04 5.69 --
S.U.05/20/10 ----4.75 5.29 --6.63 --6.69 7.00 ------7.62 5.92 5.57 --
S.U.11/19/10 ----4.53 5.64 --6.73 --6.59 6.83 ------7.42 6.01 5.45 --
S.U.05/19/11 ----4.72 5.35 --6.6 --6.75 6.83 ----------5.53 --
S.U.11/28/11 ----4.81 5.35 --6.66 --6.73 6.77 ----------5.54 --
Conductivity (field)µS/cm 05/26/98 --454 --80 1200 --460 --383 518 --338 --348 ----
µS/cm 12/01/98 --394 --59 1660 ------388 456 --305 --406 ----
µS/cm 06/07/99 --447 --95.1 1511 ------467 ----359 --490 ----
µS/cm 07/08/99 --------------608 --439 ------------
µS/cm 12/13/99 --246 --81.4 1564 ----692 487 ----341 --426 ----
µS/cm 06/06/00 --461 --85.8 1626 ----726 474 dry --385 --479 ----
µS/cm 12/11/00 --449 --103 1239 ----463 445 559 --367 --460 ----
µS/cm 06/04/01 --432 --66.5 1240 ----539 366 365 --305 --334 ----
µS/cm 12/03/01 --432 --107 1389 ----534 437.1 561 --309 --422 ----
µS/cm 06/10/02 --425 --78.0 1545 ----625 444 450 --308 --430 ----
µS/cm 12/16/02 --460 --84.0 1601 ----668 529 344 --343 --242 ----
µS/cm 06/09/03 --286 --78.0 1713 ----652 543 267 --322 --386 ----
µS/cm 12/08/03 --390 --103 1442 ----645 --220 --325 --401 ----
µS/cm 06/28/04 --449 --92.0 1642 ----630 471 --467 --340 379 ----
µS/cm 12/20/04 --489 --87.0 1660 ----689 583 --553 --431 440 ----
µS/cm 06/08/05 --429 --768 1343 ----575 467 --443 --349 386 ----
µS/cm 12/08/05 --408 --171 1712 ----708 623 --590 --450 388 ----
µS/cm 06/05/06 --469 --66 1397 ----604 535 --488 --348 237 ----
µS/cm 12/05/06 --545 --76 1998 ----731 724 --665 --437 269 ----
µS/cm 05/30/07 --503 --67 192 ----720 748 --621 --427 302 ----
µS/cm 11/19/07 --240 --163 1800 ----587 639 --518 --431 402 ----
µS/cm 05/19/08 ----50 70 --1650 --770 770 --700 --445 146 ----
µS/cm 11/19/08 ----53 104 --1584 --711 846 ------423 231 654 --
µS/cm 06/30/09 ----47 86 --1577 --652 774 ------381 250 525 --
µS/cm 11/30/09 ----45 50 --895 --555 715 ------328 138 244 --
µS/cm 05/20/10 ----51 61 --1269 --704 832 ------401 142 173 --
µS/cm 11/19/10 ----49 167 --1055 --671 809 ------334 293 373 --
µS/cm 05/19/11 ----49 54 --920 --501 637 ----------223 --
µS/cm 11/28/11 ----65 329 --1383 --710 1013 ----------389 --
G:\Projects\City of Durham\GWMR\November 2011\Tables\City of Durham tables Nov 2011.xlsx
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TABLE 4
City of Durham Closed Landfill, Permit #32-01
Blanks
Durham County, North Carolina
Summary of Detected Constituents in Groundwater
SWS Reporting LimitDetected Monitoring
Constituent/Parameter Reporting Units Sample Date DowngradientUpgradient
Temperature (field)°C 05/26/98 --15.9 --14.6 14.4 --14.3 --15.3 16 --14.8 --15.2 ----
°C 12/01/98 --17.3 --16 15 ------16.5 15.7 --12 --16.8 ----
°C 06/07/99 --18.0 --15.1 15.8 ------15.3 ----16.8 --16.2 ----
°C 07/08/99 --------------17.3 --16.2 ------------
°C 12/13/99 --15.1 --13.7 17.9 ----16.1 17.5 ----11.5 --16.3 ----
°C 06/06/00 --15.4 --17.4 14.8 ----16.2 15.4 dry --15.0 --16.5 ----
°C 12/11/00 --13.8 --14.2 15.3 ----12..6 16.0 14.4 --14.8 --14.2 ----
°C 06/04/01 --16.8 --15.1 14.3 ----13.6 14.7 14.7 --14.7 --15.7 ----
°C 12/03/01 --15.1 --14.4 15.7 ----15.8 19.4 15.3 --15.1 --15.7 ----
°C 06/10/02 --18.2 --19.0 14.8 ----15.8 15.2 17.0 --16.4 --16.3 ----
°C 12/16/02 --14.6 --12.6 14.9 ----14.1 15.9 14.0 --11.3 --14.1 ----
°C 06/09/03 --21.9 --15.6 15.1 ----16.4 14.8 16.3 --14.4 --16.6 ----
°C 12/09/03 --15.0 --14.8 15.9 ----14.0 --15.4 --16.1 --14.6 ----
°C 06/24/04 --17.5 --17.0 14.8 ----16.3 15.3 --14.65 --14.4 16.8 ----
°C 12/20/04 --13.08 --12.57 15.30 ----13.48 14.59 --15.72 --14.62 13.92 ----
°C 06/08/05 --17.14 --16.62 14.95 ----18.58 15.60 --14.5 --15.08 15.69 ----
°C 12/07/05 --14.07 --14.40 15.10 ----13.36 15.05 --15.86 --14.51 14.53 ----
°C 06/05/06 --16.24 --15.44 14.91 ----15.18 17.50 --14.43 --14.58 15.63 ----
°C 12/05/06 --14.01 --14.12 15.46 ----14.91 16.21 --16.1 --14.04 14.15 ----
°C 05/30/07 --17.81 --16.10 15.41 ----20.39 20.52 --16.53 --17.11 19.31 ----
°C 11/19/07 --14.54 --16.44 16.29 ----16.48 18.07 --16.6 --15.13 17.12 ----
°C 05/19/08 ----16.20 14.41 --14.2 --14.7 14.46 --14.41 --14.9 14.7 ----
°C 11/19/08 ----16.60 14.86 --15.84 --15.45 17.22 ------14.84 16.01 15.99 --
°C 06/30/09 ----16.62 17.52 --15.43 --17.74 15.96 ------15.44 16.38 16.57 --
°C 11/30/09 ----18.16 15.37 --15.28 --15.67 17.00 ------15.10 15.47 15.65 --
°C 05/20/10 ----15.15 14.24 --14.28 --14.51 15.46 ------14.46 14.27 14.45 --
°C 11/19/10 ----18.45 16.18 --16.29 --16.51 17.69 ------14.91 16.09 16.89 --
°C 05/19/11 ----16.3 14.39 --13.87 --14.45 14.17 ----------14.42 --
°C 11/28/11 ----17.67 16.91 --16.69 --17.17 17.38 ----------16.60 --
Turbidity (field)NTU 05/26/98 -->1000 --66.2 479 --46.1 --118 29.2 --143 --73.9 ----
NTU 12/01/98 --585 --34 >1000 ------201 12.1 --105 --14.7 ----
NTU 06/07/99 --very turbid ----very turbid ------125 ----70.8 --172 ----
NTU 07/08/99 --------------turbid ----------------
NTU 12/13/99 ------52.6 1278 ----265 107 ----122.4 --127.1 ----
NTU 06/06/00 --105 --5.74 365 ----48.2 686 dry --230 --75 ----
NTU 12/11/00 -->200 -->200 >200 ----51.3 >200 >200 ------161 ----
NTU 06/04/01 -->1000 --23.6 >1000 ----35 >1000 130 --36.7 --130 ----
NTU 12/03/01 -->999 --14 >999 ----11 >999 >999 --130 --65 ----
NTU 06/10/02 --600 --6.61 500 ----20 ----------190 ----
NTU 12/16/02 -->1100 --12.0 406 ----245 130 200 --130 --1000 ----
NTU 06/09/03 --106 --128 510 ----45.0 75.0 69.5 --230 --275 ----
NTU 12/09/03 -->990 --110 400 ----15.0 --990 -->990 --280 ----
NTU 06/04/04 --------------------------------
NTU 12/20/04 --79.8 --48 68.4 ----3.5 372 --472 ----32.9 ----
NTU 06/08/05 --887 --5.0 67.0 ----8.9 611 --140 --275 9.1 ----
NTU 12/07/05 --20 --63.0 983.0 ----1.0 >1000 --40 --11 15.0 ----
NTU 06/05/06 --254 --70.4 102.0 ----5.3 >1000 --383 --133 100.0 ----
NTU 12/05/06 --280 --15.8 58.0 ----2.8 597 --64.54 --45 25.0 ----
NTU 05/30/07 --436 --0.0 1.8 ----0.0 0 --0 -->1000 61.8 ----
NTU 11/19/07 --NM --52 76 ----9.3 259 --85.4 --233 121.4 ----
NTU 05/19/08 ----21.5 5.6 --60.4 --3.1 6.9 --15.9 --3 8.4 ----
NTU 11/19/08 ----11.3 11.4 --56.3 --3.9 7.4 ------10.9 14.7 124.2 --
NTU 06/30/09 ----7.5 9.2 --9.9 --0 3 ------22 9 98 --
NTU 11/30/09 ----9 22.4 --13 --12 10 ------22.5 10 41.5 --
NTU 05/20/10 ----9.8 9.6 --8.8 --0.4 9.6 ------5.5 14 19.9 --
NTU 11/19/10 ----21 16 --10.9 --1.2 3.3 ------16.7 12.2 9.5 --
NTU 05/19/11 ----18.5 36 --8.4 --1.4 11.7 ----------12 --
NTU 11/28/11 ----86.9 15.1 --10.9 --2.89 5.51 ----------9.47 --
Oxidation Reduction Potential mV 05/30/07 --178 --228 -43.0 ----95 ----82 --193 156 ----
(field)mV 11/19/07 ------218 7 -------82 -------103 ------
mV 05/19/08 ----291 225.1 --40 --151 -75.2 --170.1 ---45 49 ----
mV 11/19/08 ----199.3 103.7 ---92.4 --40.9 -103.7 -------69.5 -33.8 -8.8 --
mV 06/30/09 ----246 154 ---47.7 --30.4 -43 ------55 137 20.8 --
mV 11/30/09 ----238 241 ---51.8 ---5.4 -107.9 -------109 65.3 8.8 --
mV 05/20/10 ----286.6 262.5 ---23 --25.8 -48.7 -------23.4 85.7 89.9 --
mV 11/19/10 ----310.2 176 ---37.3 --12.7 -76.6 -------118.4 16.8 49.7 --
mV 05/19/11 ----194 91 ---151 ---9.4 -29.9 -----------23 --
mV 11/28/11 ----207.7 138.8 --4.0 --79.0 -26.6 ----------56.1 --
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TABLE 4
City of Durham Closed Landfill, Permit #32-01
Blanks
Durham County, North Carolina
Summary of Detected Constituents in Groundwater
SWS Reporting LimitDetected Monitoring
Constituent/Parameter Reporting Units Sample Date DowngradientUpgradient
Dissolved Oxygen (field)mg/L 12/01/01 --4.70 --4.00 2.05 ----3.90 3.50 2.80 --5.30 --2.25 ----
mg/L 06/10/02 --5.28 --9.08 18.58 ----7.00 16.85 4.03 --4.86 --5.69 ----
mg/L 12/16/02 --5.50 --7.92 12.38 ----5.99 10.2 8.67 --6.72 --3.30 ----
mg/L 06/09/03 --7.65 --9.58 3.02 ----4.63 2.65 9.92 --5.25 --3.69 ----
mg/L 12/08/03 --5.90 --5.00 3.60 ----7.90 --3.60 --2.10 --4.30 ----
mg/L 06/24/04 --6.50 --8.44 2.84 ----5.37 2.96 --5.69 --5.23 6.20 ----
mg/L 12/20/04 --6.21 --7.52 3.29 ----3.65 3.61 --4.69 --4.60 4.63 ----
mg/L 06/08/05 --------------------------------
mg/L 06/05/06 --4.00 --4.48 4.19 ----4.31 3.48 --2.77 --2.19 2.69 ----
mg/L 12/05/06 --3.81 --7.19 3.32 ----2.83 -20.00 --4.06 --2.40 3.91 ----
mg/L 05/30/07 --2.1 --2.6 5.7 ----4.6 ----7.4 --5.6 2.8 ----
mg/L 11/19/07 ------2.72 0.15 ----1.57 0.24 --0.19 --0.12 1.18 ----
mg/L 05/19/08 --------------------------------
mg/L 11/19/08 ----4.89 9.21 --3.84 --7.62 0.89 ------3.48 0.82 3.36 --
mg/L 06/30/09 ----8.5 67.5 --2.9 --33.6 6.1 ------24.6 30 3.3 --
mg/L 11/30/09 ----4.77 8.32 --2.84 --0.95 0.23 ------3.41 0.31 0.34 --
mg/L 05/20/10 ----0.54 8.8 --0.12 --0.37 0.19 ------1.68 0.26 0.49 --
mg/L 11/19/10 ----0.84 3.4 --2.67 --2.09 1.82 ------0.48 0.91 1.91 --
mg/L 05/19/11 ----1.83 6.48 --0.2 --0.77 0.09 ----------0.13 --
mg/L 11/28/11 ----1.93 1.74 --0.93 --1.71 0.47 ----------0.56 --
Notes:
ug/L =micrograms per liter
mg/L=milligrams per liter
S.U. =Standard Units
NTU =Nephelometric Turbidity Units
mV=millivolts
ND =Not detected above laboratory detection limit
oC =degrees Celsius
J =estimated concentration
B =blank-qualified result
µS/cm=microsiemens per centimeter
-- =no data available
Blanks =field, trip, and method blanks
Shaded = Concentrations above the NC 2L or Solid Waste Section Groundwater Protection Standards have been shaded
Sample data from September 1994 through December 1998 compiled and reported by Malcolm Pirnie, Inc.
Sample data from June 1999 through December 2006 collected, compiled and reported by Weston Solutions, Inc.
Sample data from May 2007 collected, complied, and reported by Golder Associates NC, Inc.
Sample data collected from November 2007 to May 2011 collected, complied, and reported by S&ME.
Laboratory data prior to November 2011 was not validated by Golder Associates.
SWS Reporting Limit =NCPQL from 09/14/94 through 12/05/06 and NCSWSL for 05/30/07 and later
* =EPA Maximum Contaminant Level Secondary Standard
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SW-4 SW-1 SW-2 SW-3
Antimony ug/L 12/20/04 5 ND ND ND ND --
(No Standard)ug/L 06/05/05 5 ND ND 5 ND --
ug/L 12/07/05 5 ND ND ND ND --
ug/L 06/05/06 5 ND ND dry ND --
ug/L 12/05/06 5 ND ND ND ND --
ug/L 05/30/07 6 ND dry dry ND ND
ug/L 11/30/07 6 0.94 J dry dry 0.97 J ND
ug/L 05/19/08 6 0.40 J ND 0.24 J 0.36 J ND
ug/L 11/19/08 6 0.76 B 0.59 B 0.7 B 0.76 B 0.53 J
ug/L 06/30/09 6 ND dry dry ND ND
ug/L 11/30/09 6 0.212 J ND ND ND ND
ug/L 05/20/10 6 0.881 J ND ND ND ND
ug/L 11/19/10 6 ND ND ND ND ND
ug/L 05/19/11 6 0.271 J ND ND ND ND
ug/L 11/28/11 6 ND dry ND ND ND
Arsenic ug/L 05/30/07 10 ND dry dry ND 3.8 J
SW Standard = 10 ug/L ug/L 11/30/07 10 1.5 B dry dry 1.7 B 0.89 J
ug/L 05/19/08 10 ND ND 1.2 J ND ND
ug/L 11/19/08 10 1.2 J 1.4 J 1.2 J 1 J ND
ug/L 06/30/09 10 ND dry dry ND 4.3 J
ug/L 11/30/09 10 ND ND ND ND ND
ug/L 05/20/10 10 ND ND ND ND 3.22 J
ug/L 11/19/10 10 2.94 J 3.35 J ND ND ND
ug/L 05/19/11 10 ND 5.0 J ND ND ND
ug/L 11/28/11 10 ND dry 4.77 B ND 4.35 J
Barium ug/L 02/07/95 --27 69 82 39 --
SW Standard = 1000 ug/L ug/L 03/13/95 25 51 61 59 ND --
ug/L 06/10/96 25 42 86 75 ND --
ug/L 11/12/96 25 32 37 59 ND --
ug/L 03/18/97 --44 126 41 27 --
ug/L 10/02/97 25 92 162 62 ND --
ug/L 05/26/98 --35 94 72 106 --
ug/L 12/01/98 --47 dry dry 25 --
ug/L 06/07/99 25 ND dry dry ND --
ug/L 12/01/99 --54 174 85 96 --
ug/L 06/06/00 --73 dry dry dry --
ug/L 12/22/00 --66 dry dry dry --
ug/L 06/04/01 25 ND 97 80 ND --
ug/L 12/03/01 25 ND dry dry ND --
ug/L 06/10/02 25 ND dry dry ND --
ug/L 12/16/02 --76 58 64 29 --
ug/L 06/10/03 25 ND 111 93 28 --
ug/L 12/08/03 25 14 59 62 ND --
ug/L 06/29/04 25 ND 83 49 ND --
ug/L 12/20/04 25 ND 42 71 ND --
ug/L 06/05/05 25 ND 73 6 28 --
ug/L 12/07/05 --39 59 52 46 --
ug/L 06/05/06 25 ND 126 dry ND --
ug/L 12/05/06 --28 106 79 25 --
ug/L 05/30/07 100 8.1 J dry dry 7.6 J ND
ug/L 11/30/07 100 3.2 J dry dry 9.1 J ND
ug/L 05/19/08 100 17 J 64 J 66 J 18 J ND
ug/L 11/19/08 100 13 J 96 J 64 J 11 J ND
ug/L 06/30/09 100 9.78 J dry dry 8.29 J ND
ug/L 11/30/09 100 10.5 J 70.1 J 61.4 J 14.1 J ND
ug/L 05/20/10 100 19.6 J 64.1 J 76 J 19.7 J ND
ug/L 11/19/10 100 6.12 J 94.8 J 43.9 J 4.59 J ND
ug/L 05/19/11 100 14.3 J 108 65.2 J 15.5 J 1.14 J
ug/L 11/28/11 100 63.3 J dry 72.7 J 8.82 J ND
Beryllium ug/L 05/30/07 1 ND dry dry ND ND
SW Standard = 6.5 ug/L #ug/L 11/30/07 1 0.4 J dry dry 0.43 J ND
ug/L 05/19/08 1 ND ND 0.34 J ND ND
ug/L 11/19/08 1 ND 0.35 J ND ND ND
ug/L 06/30/09 1 ND dry dry ND ND
ug/L 11/30/09 1 ND ND ND ND 0.121 J
ug/L 05/20/10 1 ND ND ND ND ND
ug/L 11/19/10 1 ND ND ND ND ND
ug/L 05/19/11 1 ND ND 1.35 J ND ND
ug/L 11/28/11 1 ND dry ND ND ND
TABLE 5
Summary of Surface Water Monitoring Results
City of Durham Closed Landfill, Permit No. 32-01
Durham County, North Carolina
BlanksDownstreamDetected Monitoring
Constituent/Parameter Reporting Units Sample Date SWS Reporting Limit
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SW-4 SW-1 SW-2 SW-3
TABLE 5
Summary of Surface Water Monitoring Results
City of Durham Closed Landfill, Permit No. 32-01
Durham County, North Carolina
BlanksDownstreamDetected Monitoring
Constituent/Parameter Reporting Units Sample Date SWS Reporting Limit
Chromium ug/L 02/07/95 5 ND ND ND ND --
SW Standard = 50 ug/L #ug/L 03/13/95 5 ND ND ND ND --
ug/L 06/10/96 5 ND ND ND ND --
ug/L 11/12/96 5 ND ND ND ND --
ug/L 03/18/97 5 ND ND ND ND --
ug/L 10/02/97 5 ND 5.9 ND ND --
ug/L 05/26/98 5 ND 5 ND ND --
ug/L 12/01/98 5 ND dry dry ND --
ug/L 06/07/99 5 ND dry dry ND --
ug/L 12/01/99 --7 16 8 8 --
ug/L 06/06/00 5 ND dry dry dry --
ug/L 12/22/00 5 ND dry dry dry --
ug/L 06/04/01 5 ND ND ND ND --
ug/L 12/03/01 5 ND dry dry ND --
ug/L 06/10/02 5 ND dry dry ND --
ug/L 12/16/02 5 ND ND ND ND --
ug/L 06/10/03 5 ND 5 ND ND --
ug/L 12/08/03 5 ND 5 ND ND --
ug/L 06/29/04 5 ND ND ND ND --
ug/L 12/20/04 5 5 ND ND ND --
ug/L 06/05/05 5 ND ND ND 5 --
ug/L 12/07/05 5 5 ND ND 9 --
ug/L 06/05/06 5 ND ND dry ND --
ug/L 12/05/06 5 ND ND ND ND --
ug/L 05/30/07 10 ND dry dry ND ND
ug/L 11/30/07 10 ND dry dry ND ND
ug/L 05/19/08 10 ND ND ND ND ND
ug/L 11/19/08 10 ND ND 3.0 J ND ND
ug/L 06/30/09 10 ND dry dry 1.1 J ND
ug/L 11/30/09 10 ND 2.64 J ND ND ND
ug/L 05/20/10 10 1.18 J 3.03 J 4.65 J ND ND
ug/L 11/19/10 10 ND ND ND ND ND
ug/L 05/19/11 10 ND 1.44 J 2.95 J ND ND
ug/L 11/28/11 10 ND dry ND ND ND
Copper ug/L 02/07/95 5 ND ND ND ND --
SW Standard = 7 ug/L #**ug/L 03/13/95 5 5.5 6.8 8.6 ND --
ug/L 06/10/96 5 6.3 5.9 5.7 ND --
ug/L 11/12/96 5 ND ND ND ND --
ug/L 03/18/97 5 6 ND ND 6 --
ug/L 10/02/97 5 ND ND ND ND --
ug/L 05/26/98 --6 8 6 9 --
ug/L 12/01/98 5 ND dry dry ND --
ug/L 06/07/99 5 ND dry dry ND --
ug/L 12/01/99 --10 14 10 11 --
ug/L 06/06/00 5 ND dry dry dry --
ug/L 12/22/00 5 ND dry dry dry --
ug/L 06/04/01 5 13 ND 8 ND --
ug/L 12/03/01 5 ND dry dry ND --
ug/L 06/10/02 5 ND dry dry ND 0.7 J
ug/L 12/16/02 5 21 8 10 8 --
ug/L 06/10/03 5 ND 8 6 ND --
ug/L 12/08/03 5 ND 5 6 5 --
ug/L 06/29/04 5 ND 8 ND ND --
ug/L 12/20/04 5 ND ND ND ND --
ug/L 06/05/05 --3 5 5 2 --
ug/L 12/07/05 --9 7 10 11 --
ug/L 06/05/06 --3 9 dry 3 --
ug/L 12/05/06 --2 3 6 3 --
ug/L 05/30/07 10 1.3 B dry dry 0.8 B 0.7 J
ug/L 11/30/07 10 1.3 B dry dry 2.1 B 1.1 J
ug/L 05/19/08 10 4 B 6 B 10 B 3.8 B 5.7 J
ug/L 11/19/08 10 2.7 B 4.3 B 4.7 B 3.3 B 1.1 J
ug/L 06/30/09 10 ND dry dry ND 2.36 J
ug/L 11/30/09 10 ND 2.83 J 2.34 J ND ND
ug/L 05/20/10 10 2.73 J 4.41 J 9.21 J ND ND
ug/L 11/19/10 10 ND ND ND ND ND
ug/L 05/19/11 10 1.6 J 2.11 J 3.75 J 1.93 J ND
ug/L 11/28/11 10 3.71 J dry 2.89 J 2.19 J ND
G:\Projects\City of Durham\GWMR\November 2011\Tables\City of Durham tables Nov 2011.xlsx
April 2012 Page 3 of 7 0739-604211.100
Upstream
SW-4 SW-1 SW-2 SW-3
TABLE 5
Summary of Surface Water Monitoring Results
City of Durham Closed Landfill, Permit No. 32-01
Durham County, North Carolina
BlanksDownstreamDetected Monitoring
Constituent/Parameter Reporting Units Sample Date SWS Reporting Limit
Lead ug/L 02/07/95 5 11 ND 6.2 ND --
SW Standard = 25 ug/L #*ug/L 03/13/95 5 ND ND 7.5 ND --
ug/L 06/10/96 5 ND ND ND ND --
ug/L 11/12/96 5 ND ND ND ND --
ug/L 03/18/97 5 5 ND ND 5 --
ug/L 10/02/97 5 ND ND ND ND --
ug/L 05/26/98 5 ND ND ND ND --
ug/L 12/01/98 5 5 dry dry 5 --
ug/L 06/07/99 5 ND dry dry ND --
ug/L 12/01/99 --17 5 5 7 --
ug/L 06/06/00 5 ND dry dry dry --
ug/L 12/27/00 5 ND dry dry dry --
ug/L 06/04/01 5 ND 9 ND ND --
ug/L 12/03/01 5 ND dry dry ND --
ug/L 06/10/02 5 ND dry dry ND --
ug/L 12/16/02 5 ND ND ND ND --
ug/L 06/10/03 5 9 ND 6 ND --
ug/L 12/08/03 5 ND ND ND ND --
ug/L 06/29/04 5 ND ND ND ND --
ug/L 12/20/04 5 ND ND ND ND --
ug/L 06/05/05 5 9 ND 6 ND --
ug/L 12/07/05 5 10 ND ND 10 --
ug/L 06/05/06 5 ND ND dry ND --
ug/L 12/05/06 5 ND ND ND ND --
ug/L 05/30/07 10 ND dry dry ND 3.1 J
ug/L 11/30/07 5 ND dry dry ND 3.5 J
ug/L 05/19/08 5 ND ND 4.1 J ND ND J
ug/L 11/19/08 5 0.5 B 0.79 B 1.7 B 0.45 B 3.1 J
ug/L 06/30/09 5 2.4 B dry dry ND ND
ug/L 11/30/09 10 ND ND ND ND 3.09 J
ug/L 05/20/10 10 ND 3.15 J 3.61 J ND ND
ug/L 11/19/10 10 ND ND ND ND ND
ug/L 05/19/11 10 2.31 J ND 2.90 J ND ND
ug/L 11/28/11 10 ND dry ND ND ND
Nickel ug/L 02/07/95 10 ND ND ND ND --
SW Standard = 25 ug/L ug/L 03/13/95 10 ND 13 16 ND --
ug/L 06/10/96 10 ND ND ND ND --
ug/L 11/12/96 10 ND ND ND ND --
ug/L 03/18/97 10 ND ND ND ND --
ug/L 10/02/97 10 ND ND ND ND --
ug/L 05/26/98 10 ND ND ND ND --
ug/L 12/01/98 10 ND dry dry ND --
ug/L 06/07/99 10 ND dry dry ND --
ug/L 12/01/99 --10 12 10 10 --
ug/L 06/06/00 10 ND dry dry dry --
ug/L 12/22/00 10 ND dry dry dry --
ug/L 06/04/01 10 ND ND ND ND --
ug/L 12/03/01 10 ND dry dry ND --
ug/L 06/10/02 10 ND dry dry ND --
ug/L 12/16/02 10 ND ND ND ND --
ug/L 06/10/03 10 ND ND ND ND --
ug/L 12/08/03 10 ND ND ND ND --
ug/L 06/29/04 10 ND ND ND ND --
ug/L 12/20/04 10 ND ND ND ND --
ug/L 06/05/05 10 ND ND ND ND --
ug/L 12/07/05 10 ND ND ND ND --
ug/L 06/05/06 10 ND ND dry ND --
ug/L 12/05/06 10 ND ND ND ND --
ug/L 05/30/07 50 2.7 J dry dry 2.7 J ND
ug/L 11/30/07 50 ND dry dry ND ND
ug/L 05/19/08 50 ND ND ND ND ND
ug/L 11/19/08 50 ND ND ND ND ND
ug/L 06/30/09 50 3.1 B dry dry 3.8 B 0.6 J
ug/L 11/30/09 50 ND 2.60 B 3.25 B ND 4.59 J
ug/L 05/20/10 50 2.23 J 2.36 J 3.83 J 1.97 J ND
ug/L 11/19/10 50 ND 4.72 J ND ND ND
ug/L 05/19/11 50 2.11 J 4.4 J 3.14 J 2.05 J ND
ug/L 11/28/11 50 3.30 J dry 3.11 J 1.90 J ND
Selenium ug/L 05/30/07 10 2.9 B dry dry 2.3 B 5.7 J
SW Standard = 5 ug/L #ug/L 11/30/07 10 2.6 B dry dry ND 0.52 J
ug/L 05/19/08 10 ND ND ND ND ND
ug/L 11/19/08 10 1.2 B ND 0.54 B 0.39 B 0.36 J
ug/L 06/30/09 10 ND dry dry ND 0.6 J
ug/L 11/30/09 10 ND ND ND ND ND
ug/L 05/20/10 10 ND ND ND ND ND
ug/L 11/19/10 10 ND ND ND ND ND
ug/L 05/19/11 10 1.88 J 1.7 J 1.32 J 1.81 J ND
ug/L 11/28/11 10 ND dry ND ND ND
G:\Projects\City of Durham\GWMR\November 2011\Tables\City of Durham tables Nov 2011.xlsx
April 2012 Page 4 of 7 0739-604211.100
Upstream
SW-4 SW-1 SW-2 SW-3
TABLE 5
Summary of Surface Water Monitoring Results
City of Durham Closed Landfill, Permit No. 32-01
Durham County, North Carolina
BlanksDownstreamDetected Monitoring
Constituent/Parameter Reporting Units Sample Date SWS Reporting Limit
Silver ug/L 02/07/95 1 ND ND ND ND --
SW Standard = 0.06 ug/L #**ug/L 03/13/95 1 ND ND ND ND --
ug/L 06/10/96 1 ND 1.8 3.3 ND --
ug/L 11/12/96 1 ND ND ND ND --
ug/L 03/18/97 1 ND ND ND ND --
ug/L 10/02/97 1 ND ND ND ND --
ug/L 05/26/98 1 ND ND ND ND --
ug/L 12/01/98 1 ND dry dry ND --
ug/L 06/07/99 1 ND dry dry ND --
ug/L 12/01/99 --1 1 1 1 --
ug/L 06/06/00 1 ND dry dry dry --
ug/L 12/22/00 1 ND dry dry dry --
ug/L 06/04/01 1 ND ND ND ND --
ug/L 12/03/01 1 ND dry dry ND --
ug/L 06/10/02 1 ND dry dry ND --
ug/L 12/16/02 1 ND ND ND ND --
ug/L 06/10/03 1 ND ND ND ND --
ug/L 12/08/03 1 ND ND ND ND --
ug/L 06/29/04 1 ND ND ND ND --
ug/L 12/20/04 1 ND ND ND ND --
ug/L 06/05/05 1 ND ND ND ND --
ug/L 12/07/05 1 ND ND ND ND --
ug/L 06/05/06 1 ND ND dry ND --
ug/L 12/05/06 1 ND ND ND ND --
ug/L 05/30/07 10 ND dry dry ND ND
ug/L 11/30/07 10 2.7 J dry dry 2.7 J ND
ug/L 05/19/08 10 ND ND ND ND ND
ug/L 11/19/08 10 ND ND ND ND ND
ug/L 06/30/09 10 ND dry dry ND --
ug/L 11/30/09 10 ND ND ND ND ND
ug/L 05/20/10 10 ND ND ND ND ND
ug/L 11/19/10 10 ND ND ND ND ND
ug/L 05/19/11 10 ND ND ND ND ND
ug/L 11/28/11 10 ND dry ND ND ND
Thallium ug/L 05/30/07 5.5 ND dry dry ND ND
(No Standard)ug/L 11/30/07 5.5 0.61 J dry dry 0.62 J ND
ug/L 05/19/08 5.5 ND ND ND ND ND
ug/L 11/19/08 5.5 ND ND ND ND ND
ug/L 06/30/09 5.5 ND dry dry ND ND
ug/L 11/30/09 5.5 ND ND ND 0.685 J ND
ug/L 05/20/10 5.5 ND ND ND ND ND
ug/L 11/19/10 5.5 ND ND ND ND ND
ug/L 05/19/11 5.5 ND ND ND ND ND
ug/L 11/28/11 5.5 ND dry ND ND ND
Vanadium ug/L 02/07/95 5 ND ND ND ND --
(No Standard)ug/L 03/13/95 5 ND ND ND ND --
ug/L 06/10/96 5 ND ND 7.7 ND --
ug/L 11/12/96 5 ND 8 ND ND --
ug/L 03/18/97 5 ND ND ND ND --
ug/L 10/02/97 5 ND 8.5 ND 5.7 --
ug/L 05/26/98 5 ND 5 5 5 --
ug/L 12/01/98 5 ND dry dry 5 --
ug/L 06/07/99 5 ND dry dry ND --
ug/L 12/01/99 --11 22 10 11 --
ug/L 06/06/00 --5 dry dry dry --
ug/L 12/22/00 --5 dry dry dry --
ug/L 06/04/01 5 ND ND 5 ND --
ug/L 12/03/01 --6 dry dry 6 --
ug/L 06/10/02 --6 dry dry 6 --
ug/L 12/16/02 5 7 ND ND ND --
ug/L 06/10/03 5 ND 7 5 ND --
ug/L 12/08/03 5 ND ND ND ND --
ug/L 06/29/04 5 ND ND ND ND --
ug/L 12/20/04 5 ND ND ND ND --
ug/L 06/05/05 5 5 ND ND ND --
ug/L 12/07/05 5 7 ND ND 6 --
ug/L 06/05/06 5 ND ND dry ND --
ug/L 12/05/06 5 ND ND ND ND --
ug/L 05/30/07 25 ND dry dry 1.2 J ND
ug/L 11/30/07 25 ND dry dry ND ND
ug/L 05/19/08 25 ND ND 3.1 J ND ND
ug/L 11/19/08 25 ND ND 2.6 J ND ND
ug/L 06/30/09 25 2.4 J dry dry 2.4 J ND
ug/L 11/30/09 25 1.96 J 1.52 J 1.96 J 2.03 J ND
ug/L 05/20/10 25 4.02 J 5.14 J 7.89 J 5.27 J ND
ug/L 11/19/10 25 1.78 J ND ND 1.64 J ND
ug/L 05/19/11 25 2.97 J ND 5.0 J 2.84 J ND
ug/L 11/28/11 25 ND dry ND ND ND
G:\Projects\City of Durham\GWMR\November 2011\Tables\City of Durham tables Nov 2011.xlsx
April 2012 Page 5 of 7 0739-604211.100
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SW-4 SW-1 SW-2 SW-3
TABLE 5
Summary of Surface Water Monitoring Results
City of Durham Closed Landfill, Permit No. 32-01
Durham County, North Carolina
BlanksDownstreamDetected Monitoring
Constituent/Parameter Reporting Units Sample Date SWS Reporting Limit
Zinc ug/L 02/07/95 10 33 ND ND 21 --
SW Standard = 50 ug/L #**ug/L 03/13/95 --34 63 87 67 --
ug/L 06/10/96 10 ND ND ND 13 --
ug/L 11/12/96 10 20 ND 16 22 --
ug/L 03/18/97 10 32 ND ND 32 --
ug/L 10/02/97 10 10 14 21 146 --
ug/L 05/26/98 --25 26 19 48 --
ug/L 12/01/98 10 ND dry dry 56 --
ug/L 06/07/99 --76 dry dry 42 --
ug/L 12/01/99 --89 58 45 66 --
ug/L 06/06/00 --10 dry dry dry --
ug/L 12/22/00 10 ND dry dry dry --
ug/L 06/04/01 --39 14 16 28 --
ug/L 12/03/01 --42 dry dry 80 --
ug/L 06/10/02 --25 dry dry 36 --
ug/L 12/16/02 --106 18 16 39 --
ug/L 06/10/03 --18 22 15 19 --
ug/L 12/08/03 10 106 11 ND 42 --
ug/L 06/29/04 10 21 ND ND 19 --
ug/L 12/20/04 10 31 ND ND 30 --
ug/L 06/05/05 10 33 ND ND 30 --
ug/L 12/07/05 --38 10 16 33 --
ug/L 06/05/06 --21 17 dry 17 --
ug/L 12/05/06 10 38 ND 11 41 --
ug/L 05/30/07 10 51.9 dry dry 52.5 2.4 J
ug/L 11/30/07 10 73 B dry dry 62 B 90.0
ug/L 05/19/08 10 48 10 38 47 ND
ug/L 11/19/08 10 29 12 12 26 ND
ug/L 06/30/09 10 24.7 B dry dry 28.3 B 15.2
ug/L 11/30/09 10 44.6 8.39 J 8.54 J 39.2 ND
ug/L 05/20/10 10 26.6 9.7 J 18.5 29.7 ND
ug/L 11/19/10 10 39.5 9.74 J 4.01 J 40.3 ND
ug/L 05/19/11 10 37.1 4.56 B 10.1 B 36.8 4.26 J
ug/L 11/28/11 10 7.24 J dry 5.77 J 36.6 ND
Acetone ug/L 05/30/07 100 ND dry dry 5.4 B 3.8 J
(No Standard)ug/L 11/30/07 100 ND dry dry ND ND
ug/L 05/19/08 100 ND ND ND ND 13.0 J
ug/L 11/19/08 100 ND ND ND ND ND
ug/L 06/30/09 100 ND dry dry ND ND
ug/L 11/30/09 100 ND ND ND ND ND
ug/L 05/20/10 100 ND ND ND ND ND
ug/L 11/19/10 100 ND 2.0 J 2.5 J ND ND
ug/L 05/19/11 100 ND ND ND ND ND
ug/L 11/28/11 100 ND dry ND ND ND
Chloroform ug/L 09/19/94 --ND dry dry ND --
(No Standard)ug/L 02/07/95 5 ND ND ND ND --
ug/L 03/13/95 5 ND ND ND ND --
ug/L 06/10/96 1 ND ND ND ND --
ug/L 11/12/96 1 ND ND ND ND --
ug/L 03/18/97 1 ND ND ND ND --
ug/L 10/02/97 1 ND ND ND ND --
ug/L 05/26/98 5 ND ND ND ND --
ug/L 12/01/98 2 ND ND ND ND --
ug/L 06/07/99 5 ND dry dry ND ND
ug/L 12/15/99 5 ND ND ND ND ND
ug/L 06/06/00 5 ND dry dry dry ND
ug/L 12/22/00 5 ND dry dry dry ND
ug/L 06/04/01 5 ND ND ND ND ND
ug/L 12/13/01 5 ND dry dry ND ND
ug/L 06/10/02 5 ND dry dry ND ND
ug/L 12/16/02 5 ND ND ND ND ND
ug/L 06/09/03 5 ND ND ND ND ND
ug/L 12/08/03 5 ND ND ND ND ND
ug/L 06/28/04 5 ND ND ND ND ND
ug/L 12/20/04 1 ND ND ND ND ND
ug/L 06/05/05 1 ND ND ND ND ND
ug/L 12/07/05 1 ND ND ND ND ND
ug/L 06/05/06 1 0.65 J ND ND 0.59 J ND
ug/L 12/05/06 1 ND ND ND ND ND
ug/L 05/30/07 5 0.60 J dry dry 0.55 J ND
ug/L 11/30/07 5 0.6 J dry dry 0.42 --
ug/L 05/19/08 5 0.66 J ND ND 0.58 --
ug/L 11/19/08 5 0.39 J ND ND 0.42 --
ug/L 06/30/09 5 ND dry dry ND --
ug/L 11/30/09 5 0.52 J ND ND ND --
ug/L 05/20/10 5 ND ND ND ND --
ug/L 11/19/10 5 ND ND ND ND --
ug/L 05/19/11 5 ND ND ND ND --
ug/L 11/28/11 5 ND dry ND ND ND
G:\Projects\City of Durham\GWMR\November 2011\Tables\City of Durham tables Nov 2011.xlsx
April 2012 Page 6 of 7 0739-604211.100
Upstream
SW-4 SW-1 SW-2 SW-3
TABLE 5
Summary of Surface Water Monitoring Results
City of Durham Closed Landfill, Permit No. 32-01
Durham County, North Carolina
BlanksDownstreamDetected Monitoring
Constituent/Parameter Reporting Units Sample Date SWS Reporting Limit
pH (field)S.U.05/26/98 ------------
S.U.12/01/98 ------------
S.U.06/07/99 --6 dry dry 5.76 --
S.U.07/08/99 ----dry dry ----
S.U.12/13/99 --6.47 6.3 6.44 6.58 --
S.U.06/06/00 --6.54 dry dry dry --
S.U.12/11/00 --7.48 dry dry dry --
S.U.06/04/01 --7.08 6.92 6.94 7.11 --
S.U.12/03/01 --6.59 dry dry 5.99 --
S.U.06/10/02 --7.81 dry dry 8.13 --
S.U.12/16/02 --7.28 7.66 6.81 7.2 --
S.U.06/09/03 --7.14 7.58 --7.49 --
S.U.12/09/03 --8.46 7.82 8.58 8.46 --
S.U.06/24/04 --7.53 6.91 7.4 7.57 --
S.U.12/20/04 --7.64 8 --7.66 --
S.U.06/08/05 --7.5 7.69 7.31 7.59 --
S.U.12/07/05 --7.2 7.3 7.14 7.47 --
S.U.06/05/06 --7.58 7.24 dry 7.49 --
S.U.12/05/06 --7.39 7.63 8.54 15.2 --
S.U.05/31/07 --8.55 dry dry 8.64 --
S.U.11/30/07 ----dry dry ----
S.U.05/19/08 --8.26 8.25 8.35 8.3 --
S.U.11/19/08 --7.51 7.36 7.53 7.18 --
S.U.06/30/09 --7.21 dry dry 7.36 --
S.U.11/30/09 --8.21 7.80 7.75 8.30 --
S.U.05/20/10 --7.61 7.83 6.67 7.73 --
S.U.11/19/10 ----7.44 7.71 7.75 --
S.U.05/19/11 --7.67 7.50 6.27 7.86 --
S.U.11/28/11 --7.41 dry 6.57 6.73 --
Conductivity (field)µS/cm 05/26/98 ------------
µS/cm 12/01/98 ------------
µS/cm 06/07/99 --198 dry dry 167 --
µS/cm 07/08/99 ----dry dry ----
µS/cm 12/13/99 --257.4 272.8 137.8 134.5 --
µS/cm 06/06/00 --202.3 dry dry dry --
µS/cm 12/11/00 --277.5 dry dry dry --
µS/cm 06/04/01 --372.6 184.8 166.9 393.4 --
µS/cm 12/03/01 --445 dry dry 433.5 --
µS/cm 06/10/02 --451 dry dry 250 --
µS/cm 12/16/02 --123 60 110 341 --
µS/cm 06/09/03 --186 177 --316 --
µS/cm 12/08/03 --411.1 29.9 24.3 410 --
µS/cm 06/28/04 --451 284 277 431 --
µS/cm 12/20/04 --434 249 --424 --
µS/cm 06/08/05 --336 197.1 190.5 345.8 --
µS/cm 12/08/05 --250 129 140 176 --
µS/cm 06/05/06 --391 161 dry 412 --
µS/cm 12/05/06 --392 194 232 391 --
µS/cm 05/31/07 --477 dry dry 485 --
µS/cm 11/30/07 ----dry dry ----
µS/cm 05/19/08 --120 120 300 320 --
µS/cm 11/19/08 --370 160 160 380 --
µS/cm 06/30/09 --330 dry dry 310 --
µS/cm 11/30/09 --400 190 200 400 --
µS/cm 05/20/10 --287 99 159 267 --
µS/cm 11/19/10 ----226 473 469 --
µS/cm 05/19/11 --313 163 137 311 --
µS/cm 11/28/11 --207 dry 251 465 --
Temperature (field)°C 05/26/98 ------------
°C 12/01/98 ------------
°C 06/07/99 --17.2 dry dry 18 --
°C 07/08/99 ----dry dry ----
°C 12/13/99 --18.1 20.1 17.8 19.2 --
°C 06/06/00 --17.7 dry dry dry --
°C 12/11/00 --8.9 dry dry dry --
°C 06/04/01 --22.3 18.7 20.2 22.5 --
°C 12/03/01 --19.5 dry dry 16.2 --
°C 06/10/02 --23.49 dry dry 23.43 --
°C 12/16/02 --11.19 3.52 4.3 10.53 --
°C 06/09/03 --23.36 23.23 --23.08 --
°C 12/09/03 --13.3 6.6 7.8 13.2 --
°C 06/24/04 --22.92 21.22 23.4 22.84 --
°C 12/20/04 --12.07 1.95 --9.37 --
°C 06/08/05 --23.06 20.83 21.45 22.9 --
°C 12/07/05 --12.26 9.29 8.98 10.33 --
°C 06/05/06 --21.8 20.12 dry 21.75 --
°C 12/05/06 --15.02 8.32 8 15.2 --
°C 05/31/07 --24.28 dry dry 23.8 --
°C 11/30/07 ----dry dry ----
°C 05/19/08 --19.0 19.0 22.6 21.7 --
°C 11/19/08 --14.7 7.5 6 14.6 --
°C 06/30/09 --20.4 dry dry 20.3 --
°C 11/30/09 --18.4 17.3 17.6 18.6 --
°C 05/20/10 --23.04 18.36 20.8 22.38 --
°C 11/19/10 ----7.69 19.34 19.43 --
°C 05/19/11 --21.01 15.61 18.00 21.49 --
°C 11/28/11 --13.91 dry 15.05 19.17 --
G:\Projects\City of Durham\GWMR\November 2011\Tables\City of Durham tables Nov 2011.xlsx
April 2012 Page 7 of 7 0739-604211.100
Upstream
SW-4 SW-1 SW-2 SW-3
TABLE 5
Summary of Surface Water Monitoring Results
City of Durham Closed Landfill, Permit No. 32-01
Durham County, North Carolina
BlanksDownstreamDetected Monitoring
Constituent/Parameter Reporting Units Sample Date SWS Reporting Limit
Turbidity (field)NTU 05/26/98 ------------
NTU 12/01/98 ------------
NTU 06/07/99 --12 dry dry ----
NTU 07/08/99 ----dry dry ----
NTU 12/13/99 --139.2 229 139.8 146.7 --
NTU 06/06/00 --42.8 dry dry dry --
NTU 12/11/00 --27.3 dry dry dry --
NTU 06/04/01 --17.2 18.2 90 7.6 --
NTU 12/03/01 ----dry dry 2.2 --
NTU 06/10/02 --3.2 dry dry 2.6 --
NTU 12/16/02 --6.4 9 10 5.8 --
NTU 06/09/03 --34 65.2 --18 --
NTU 12/09/03 --12 25 23 13 --
NTU 06/04/04 ------------
NTU 12/20/04 ------------
NTU 06/08/05 --7.55 22.1 53 8.99 --
NTU 12/07/05 --88 31 66 120 --
NTU 06/05/06 --15.6 26.4 dry 17.9 --
NTU 12/05/06 --4.44 20.6 27.5 8.31 --
NTU 05/31/07 --0 dry dry 56.9 --
NTU 11/30/07 ----dry dry ----
NTU 05/19/08 ------------
NTU 11/19/08 ------------
NTU 06/30/09 ----dry dry ----
NTU 11/30/09 ------------
NTU 05/20/10 --11.2 38.6 64.6 26 --
NTU 11/19/10 ----10.5 0.3 0 --
NTU 05/19/11 --0.7 13.5 80.2 0.1 --
NTU 11/28/11 --26.0 dry 30.9 3.37 --
Oxidation Reduction Potential mV 05/31/07 --70 dry dry 45 --
(field)mV 11/30/07 ----dry dry ----
mV 05/19/08 ------------
mV 11/19/08 ------------
mV 06/30/09 ----dry dry ----
mV 11/30/09 ------------
mV 05/20/10 --91.6 52.4 53.4 7.65 --
mV 11/19/10 -----72 2.6 71.5 --
mV 05/19/11 --31 -122 5.1 42 --
mV 11/28/11 --7.2 dry 52.8 106.3 --
Dissolved Oxygen (field)mg/L 12/01/01 --5.9 dry dry 4.7 --
mg/L 06/10/02 --9.1 dry dry 13.3 --
mg/L 12/16/02 --11.64 10.81 10.51 11.57 --
mg/L 06/09/03 --10.16 7.8 --10.04 --
mg/L 12/08/03 --10.5 12.6 12.5 10.5 --
mg/L 06/24/04 --8.01 4.53 7.4 7.83 --
mg/L 12/20/04 --9.93 12.2 --10.01 --
mg/L 06/08/05 ------------
mg/L 06/05/06 --6.59 5.45 dry 6.74 --
mg/L 12/05/06 --8.25 4.46 9.89 7.24 --
mg/L 05/31/07 --8.1 dry dry 7.7 --
mg/L 11/30/07 ----dry dry ----
mg/L 05/19/08 ------------
mg/L 11/19/08 ------------
mg/L 06/30/09 ----dry dry ----
mg/L 11/30/09 ------------
mg/L 05/20/10 --8.08 8.53 7.84 7.85 --
mg/L 11/19/10 ----7.57 8.62 10.04 --
mg/L 05/19/11 --0.56 4.73 0.1 8.8 --
mg/L 11/28/11 --7.34 dry 8.10 8.87 --
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
J =estimated concentration
B =blank-qualified result
dry =no flowing water at time of sampling
µS/cm=microsiemens per centimeter
mV =Millivolts
-- =no data
Blanks =field, trip and method blanks
Surface Water Standards SW Standards are WS Standards (Ellerbee Creek is a WS-IV Classification) or Freshwater Aquatic Life Standards if no WS Standard exists.
Shaded = Concentrations above the applicable Surface Water Standards have been shaded.
# Freshwater Aquatic Life Standards
*Standard is a Narrative Standard
**Standard is an Action Limit
Sample data from September 1994 through December 1998 compiled and reported by Malcolm Pirnie, Inc.
Sample data from June 1999 through December 2006 collected, compiled and reported by Weston Solutions, Inc.
Sample data from May 2007 collected, complied, and reported by Golder Associates NC, Inc.
Sample data collected from November 2007 to May 2011 collected, complied, and reported by S&ME.
Laboratory data prior to November 2011 was not validated by Golder Associates.
SWS Reporting Limit =NCPQL from 09/14/94 through 12/05/06 and NCSWSL for 05/30/07 and later
G:\Projects\City of Durham\GWMR\November 2011\Tables\City of Durham tables Nov 2011.xlsx

g:\projects\city of durham\gwmr\november 2011\draft second semiannual 2011 gw monitoring report.docx

DRAWING

3
0
0
310
3
2
0
3
3
0
340
330
320
310
300
2
9
0
280
2
9
0
2
8
0
3
4
0
MW-5
MW-2
MW-3
MW-4R
MW-8
289.35
302.05
292.00
NM
276.20
SW-1
SW-2
SW-3
MW-6R
277.62
MW-9R
342.60
MW-7R
300.52
PZ-2R
320.87 PZ-6
303.62
PZ-3
317.36
PZ-4R
315.10
MW-3R
281.31
MW-10
275.57NES-3
275.82
X:
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C
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0
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9
6
0
4
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7
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9
6
0
4
2
(
1
2
-
1
4
-
1
1
)
.
d
w
g

1
/
1
7
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:
3
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P
M
GROUNDWATER CONTOUR MAP
NOVEMBER 28, 2011
CITY OF DURHAM
CLOSED LANDFILL PERMIT #32-01
DURHAM, NORTH CAROLINA
DWG 1
07396042(12-14-11)
EXISTING 10' GROUND SURFACE CONTOUR
EXISTING 2' GROUND SURFACE CONTOUR
APPROXIMATE LIMITS OF WASTE
EXISTING ROAD
GROUNDWATER ELEVATION 10' CONTOURS
GROUNDWATER FLOW ARROW
PIEZOMETER LOCATION AND GROUNDWATER ELEVATION
SURFACE WATER MONITORING POINT
COMPLIANCE MONITORING WELL AND WATER LEVEL ELEVATION
NOT MEASURED
NON-COMPLAINACE MONITORING WELL AND WATER LEVEL ELEVATION
LEGEND
NOTES
1) TOPOGRAPHIC CONTOUR INTERVAL = 2 FEET
2) GROUNDWATER SURFACE CONTOUR INTERVAL = 10 FEET
3) 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 CONDITIONS.
4) GROUNDWATER ELEVATIONS MEASURED ON NOVEMBER 28, 2011.
5) TOC ELEVATIONS WERE SURVEYED BY MULKEY ENGINEERING IN JANUARY 2001. TOC
ELEVATIONS WERE SURVEYED FOR WELLS PZ-2R, PZ-4R, MW-6R, MW-7R AND MW-9R IN 2005 BY
MULKEY ENGINEERING.
6) MW-10 SURVEYED BY BATEMAN CIVIL SURVEY.
7) MW-3R HAS NOT BEEN SURVEYED AND WAS NOT USED IN THE INTERPRETATION OF CONTOUR
LINES.
8) WELLS MW-1, MW-4, MW-6, MW-7, MW-9, PZ-1, PZ-2 AND PZ-4 HAVE BEEN ABANDONED,
DAMAGED OR DESTROYED AND ARE NOT SHOWN ON THIS MAP.
9) MW-3 WAS NOT GAUGED DURING THE SAMPLING EVENT.
10) BASE MAP TOPOGRAPHIC MAP PROVIDED BY WESTON SOLUTIONS, INC. (FROM THEIR
GROUNDWATER REPORT FOR THE DECEMBER 2006 SAMPLING EVENT).
300
SITE LOCATION
NM
MW-2
SW-1
277.05
MW-2
PZ-2R
320.53

g:\projects\city of durham\gwmr\november 2011\draft second semiannual 2011 gw monitoring report.docx

APPENDIX A
Groundwater and Surface Water Sampling Logs

g:\projects\city of durham\gwmr\november 2011\draft second semiannual 2011 gw monitoring report.docx

APPENDIX B

November 2011 Groundwater Certificate-of-Analysis, Chain of Custody Form(s) and Laboratory
Data Review

102-A Woodwinds Industrial Court
Cary NC, 27511
919.467.3090 919.467.3515Phone:FAX:www.encolabs.com
Environmental Conservation Laboratories, Inc.
ENCO Workorder: C113671
Greensboro, NC 27407
Dear Dusty Reedy,
Enclosed is a copy of your laboratory report for test samples received by our laboratory on
Tuesday, November 29, 2011.
Unless otherwise noted in an attached project narrative, all samples were received in
acceptable condition and processed in accordance with the referenced methods/procedures.
Results for these procedures apply only to the samples as submitted.
The analytical results contained in this report are in compliance with NELAC standards, except
as noted in the project narrative. This report shall not be reproduced except in full, without
the written approval of the Laboratory.
This report contains only those analyses performed by Environmental Conservation
Laboratories. Unless otherwise noted, all analyses were performed at ENCO Cary. Data from
outside organizations will be reported under separate cover.
If you have any questions or require further information, please do not hesitate to contact me.
Sincerely,
Enclosure(s)
Project Number: 073-9604211.100, Project Name/Desc: City of Durham
Attn: Dusty Reedy
Golder Associates, Inc. (GO007)
5B Oak Branch Drive
Stephanie Franz
Project Manager
Friday, December 9, 2011
RE: Laboratory Results for
The total number of pages in this report, including this page is 45.
www.encolabs.com
PROJECT NARRATIVE
Date: 09 December 2011
Client: Golder Associates, Inc. (GO007)
Project: City of Durham
Lab ID: C113671
Overview
Environmental Conservation Laboratories, Inc. (ENCO) analyzed all submitted samples in accordance with the methods
referenced in the laboratory report. Any particular difficulties encountered during sample handling by ENCO are discussed in
the QC Remarks section below.
Quality Control Samples
No Comments
Quality Control Remarks
No Comments
Other Comments
All samples received under this work order arrived in acceptable conditions. The samples were not checked for residual
chlorine, as it is not required. Sample S-1 was not received, as no flow was observed at the sampling point.
The analytical data presented in this report are consistent with the methods as referenced in the analytical report. Any
exceptions or deviations are noted in the QC remarks section of this narrative or in the Flags/Notes and Definitions section of
the report.
Released By:
Environmental Conservation Laboratories, Inc.
Stephanie Franz
Project Manager
Page 2 of 45
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SAMPLE SUMMARY/LABORATORY CHRONICLE
3201-MW2 C113671-01 Sampled:11/28/11 13:14 Received:11/29/11 12:15Client ID:Lab ID:
Prep Date/Time(s)Hold Date/Time(s)Parameter Analysis Date/Time(s)
EPA 6010C 05/26/12 12/01/11 10:05 12/5/2011 11:10
EPA 6020A 05/26/12 12/01/11 10:07 12/6/2011 14:26
EPA 8260B 12/12/11 11/30/11 14:37 12/1/2011 06:21
3201-MW3R MS/MSD C113671-02 Sampled:11/28/11 11:40 Received:11/29/11 12:15Client ID:Lab ID:
Prep Date/Time(s)Hold Date/Time(s)Parameter Analysis Date/Time(s)
EPA 6010C 05/26/12 12/01/11 10:05 12/5/2011 11:00
EPA 6020A 05/26/12 12/01/11 10:07 12/6/2011 14:17
EPA 8260B 12/12/11 11/30/11 14:37 12/1/2011 05:52
3201-MW4R C113671-03 Sampled:11/28/11 10:58 Received:11/29/11 12:15Client ID:Lab ID:
Prep Date/Time(s)Hold Date/Time(s)Parameter Analysis Date/Time(s)
EPA 6010C 05/26/12 12/01/11 10:05 12/5/2011 11:12
EPA 6020A 05/26/12 12/01/11 10:07 12/6/2011 14:28
EPA 8260B 12/12/11 11/30/11 14:37 12/1/2011 06:50
3201-MW5 C113671-04 Sampled:11/28/11 14:16 Received:11/29/11 12:15Client ID:Lab ID:
Prep Date/Time(s)Hold Date/Time(s)Parameter Analysis Date/Time(s)
EPA 6010C 05/26/12 12/01/11 10:05 12/5/2011 11:14
EPA 6020A 05/26/12 12/01/11 10:07 12/6/2011 14:29
EPA 8260B 12/12/11 11/30/11 14:37 12/1/2011 07:20
3201-MW9R C113671-05 Sampled:11/28/11 15:12 Received:11/29/11 12:15Client ID:Lab ID:
Prep Date/Time(s)Hold Date/Time(s)Parameter Analysis Date/Time(s)
EPA 6010C 05/26/12 12/01/11 10:05 12/5/2011 11:22
EPA 6020A 05/26/12 12/01/11 10:07 12/6/2011 14:31
EPA 8260B 12/12/11 11/30/11 14:37 12/1/2011 07:49
3201-MW10 C113671-06 Sampled:11/28/11 12:35 Received:11/29/11 12:15Client ID:Lab ID:
Prep Date/Time(s)Hold Date/Time(s)Parameter Analysis Date/Time(s)
EPA 6010C 05/26/12 12/01/11 10:05 12/5/2011 11:23
EPA 6020A 05/26/12 12/01/11 10:07 12/6/2011 14:41
EPA 8260B 12/12/11 11/30/11 14:37 12/1/2011 08:19
Page 3 of 45
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3201-S2 C113671-07 Sampled:11/28/11 12:45 Received:11/29/11 12:15Client ID:Lab ID:
Prep Date/Time(s)Hold Date/Time(s)Parameter Analysis Date/Time(s)
EPA 6010C 05/26/12 12/01/11 10:05 12/5/2011 11:25
EPA 6020A 05/26/12 12/01/11 10:07 12/6/2011 14:43
EPA 8260B 12/12/11 11/30/11 14:37 12/1/2011 08:48
3201-S3 C113671-08 Sampled:11/28/11 13:31 Received:11/29/11 12:15Client ID:Lab ID:
Prep Date/Time(s)Hold Date/Time(s)Parameter Analysis Date/Time(s)
EPA 6010C 05/26/12 12/01/11 10:05 12/5/2011 11:27
EPA 6020A 05/26/12 12/01/11 10:07 12/6/2011 14:44
EPA 8260B 12/12/11 11/30/11 14:37 12/1/2011 09:18
3201-S4 C113671-09 Sampled:11/28/11 11:52 Received:11/29/11 12:15Client ID:Lab ID:
Prep Date/Time(s)Hold Date/Time(s)Parameter Analysis Date/Time(s)
EPA 6010C 05/26/12 12/01/11 10:05 12/5/2011 11:29
EPA 6020A 05/26/12 12/01/11 10:07 12/6/2011 14:46
EPA 8260B 12/12/11 11/30/11 14:37 12/1/2011 09:47
3201-Field Blank C113671-10 Sampled:11/28/11 15:20 Received:11/29/11 12:15Client ID:Lab ID:
Prep Date/Time(s)Hold Date/Time(s)Parameter Analysis Date/Time(s)
EPA 6010C 05/26/12 12/01/11 10:05 12/5/2011 11:31
EPA 6020A 05/26/12 12/01/11 10:07 12/6/2011 14:48
EPA 8260B 12/12/11 11/30/11 14:37 12/1/2011 10:16
3201-Trip Blank C113671-11 Sampled:11/28/11 10:58 Received:11/29/11 12:15Client ID:Lab ID:
Prep Date/Time(s)Hold Date/Time(s)Parameter Analysis Date/Time(s)
EPA 8260B 12/12/11 11/30/11 14:37 12/1/2011 10:45
Page 4 of 45
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NORTH CAROLINA SWS SAMPLE DETECTION SUMMARY
Analyte MethodUnitsResults
Lab ID:Client ID:3201-MW2 C113671-01
Flag NotesMDLNC SWSLMRLDF
0.269 ug/L EPA 6020AJ 62.000.2201Antimony - Total
195 ug/L EPA 6010C 10010.01.001Barium - Total
0.204 ug/L EPA 6010CJ 11.000.1001Beryllium - Total
4.88 ug/L EPA 6010CJ 1010.01.001Chromium - Total
3.7 ug/L EPA 8260BJ 51.00.721cis-1,2-Dichloroethene
2.95 ug/L EPA 6010CJ 1010.01.601Copper - Total
8.84 ug/L EPA 6010CJ 5010.01.801Nickel - Total
2.01 ug/L EPA 6010CJ 1010.01.901Silver - Total
0.142 ug/L EPA 6020AJ 5.51.000.1101Thallium - Total
18.6 ug/L EPA 6010C 1010.03.801Zinc - Total
Analyte MethodUnitsResults
Lab ID:Client ID:3201-MW3R MS/MSD C113671-02
Flag NotesMDLNC SWSLMRLDF
0.277 ug/L EPA 6020AJ 62.000.2201Antimony - Total
2.99 ug/L EPA 6010CJ 1010.02.801Arsenic - Total
130 ug/L EPA 6010C 10010.01.001Barium - Total
3.02 ug/L EPA 6010CJ 1010.01.001Chromium - Total
2.74 ug/L EPA 6010CJ 1010.01.101Cobalt - Total
7.08 ug/L EPA 6010CJ 5010.01.801Nickel - Total
1.77 ug/L EPA 6010CJ 2510.01.401Vanadium - Total
Analyte MethodUnitsResults
Lab ID:Client ID:3201-MW4R C113671-03
Flag NotesMDLNC SWSLMRLDF
0.635 ug/L EPA 6020AJ 62.000.2201Antimony - Total
540 ug/L EPA 6010C 10010.01.001Barium - Total
2.95 ug/L EPA 6010CJ 5010.01.801Nickel - Total
0.281 ug/L EPA 6020AJ 5.51.000.1101Thallium - Total
Analyte MethodUnitsResults
Lab ID:Client ID:3201-MW5 C113671-04
Flag NotesMDLNC SWSLMRLDF
3.24 ug/L EPA 6010CJ 1010.02.801Arsenic - Total
1870 ug/L EPA 6010C 10010.01.001Barium - Total
1.27 ug/L EPA 6010CJ 1010.01.001Chromium - Total
2.84 ug/L EPA 6010CJ 5010.01.801Nickel - Total
Analyte MethodUnitsResults
Lab ID:Client ID:3201-MW9R C113671-05
Flag NotesMDLNC SWSLMRLDF
4.99 ug/L EPA 6010CJ 1010.02.801Arsenic - Total
80.4 ug/L EPA 6010CJ 10010.01.001Barium - Total
0.770 ug/L EPA 6010CJ 11.000.1001Beryllium - Total
7.67 ug/L EPA 6010CJ 1010.01.001Chromium - Total
7.63 ug/L EPA 6010CJ 1010.01.101Cobalt - Total
5.69 ug/L EPA 6010CJ 1010.01.601Copper - Total
2.81 ug/L EPA 6010CJ 1010.01.901Lead - Total
5.78 ug/L EPA 6010CJ 5010.01.801Nickel - Total
9.59 ug/L EPA 6010CJ 2510.01.401Vanadium - Total
21.7 ug/L EPA 6010C 1010.03.801Zinc - Total
Page 5 of 45
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Analyte MethodUnitsResults
Lab ID:Client ID:3201-MW10 C113671-06
Flag NotesMDLNC SWSLMRLDF
3.1 ug/L EPA 8260BJ 51.00.08011,1-Dichloroethane
4.0 ug/L EPA 8260B 11.00.5911,2-Dichloropropane
268 ug/L EPA 6010C 10010.01.001Barium - Total
1.6 ug/L EPA 8260B 11.00.681Benzene
140 ug/L EPA 8260B 51.00.721cis-1,2-Dichloroethene
5.64 ug/L EPA 6010CJ 1010.01.101Cobalt - Total
1.79 ug/L EPA 6010CJ 1010.01.601Copper - Total
5.47 ug/L EPA 6010CJ 5010.01.801Nickel - Total
7.19 ug/L EPA 6010CJ 1010.01.901Silver - Total
3.4 ug/L EPA 8260BJ 51.00.121trans-1,2-Dichloroethene
5.9 ug/L EPA 8260B 11.00.721Trichloroethene
9.9 ug/L EPA 8260B 11.00.601Vinyl chloride
26.6 ug/L EPA 6010C 1010.03.801Zinc - Total
Analyte MethodUnitsResults
Lab ID:Client ID:3201-S2 C113671-07
Flag NotesMDLNC SWSLMRLDF
4.77 ug/L EPA 6010CJ 1010.02.801Arsenic - Total
72.7 ug/L EPA 6010CJ 10010.01.001Barium - Total
2.89 ug/L EPA 6010CJ 1010.01.601Copper - Total
3.11 ug/L EPA 6010CJ 5010.01.801Nickel - Total
5.77 ug/L EPA 6010CJ 1010.03.801Zinc - Total
Analyte MethodUnitsResults
Lab ID:Client ID:3201-S3 C113671-08
Flag NotesMDLNC SWSLMRLDF
8.82 ug/L EPA 6010CJ 10010.01.001Barium - Total
2.19 ug/L EPA 6010CJ 1010.01.601Copper - Total
1.90 ug/L EPA 6010CJ 5010.01.801Nickel - Total
36.6 ug/L EPA 6010C 1010.03.801Zinc - Total
Analyte MethodUnitsResults
Lab ID:Client ID:3201-S4 C113671-09
Flag NotesMDLNC SWSLMRLDF
63.3 ug/L EPA 6010CJ 10010.01.001Barium - Total
3.71 ug/L EPA 6010CJ 1010.01.601Copper - Total
3.30 ug/L EPA 6010CJ 5010.01.801Nickel - Total
7.24 ug/L EPA 6010CJ 1010.03.801Zinc - Total
Analyte MethodUnitsResults
Lab ID:Client ID:3201-Field Blank C113671-10
Flag NotesMDLNC SWSLMRLDF
4.35 ug/L EPA 6010CJ 1010.02.801Arsenic - Total
Page 6 of 45
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ANALYTICAL RESULTS
3201-MW2Description:Lab Sample ID:C113671-01 11/29/11 12:15Received:
Matrix:Ground Water Sampled:11/28/11 13:14 Work Order:C113671
City of DurhamProject:Sampled By:N. Rathjen/ K. Sizemore
Volatile Organic Compounds by GCMS
^ - ENCO Cary certified analyte [NC 591]
Analyte [CAS Number]DFUnitsResults MDL Method Analyzed ByMRLFlag NotesNC SWSL
ug/L EPA 8260B 12/01/11 06:211,1,1,2-Tetrachloroethane [630-20-6] ^1 0.90 jkg1.00.90 U 5
ug/L EPA 8260B 12/01/11 06:211,1,1-Trichloroethane [71-55-6] ^1 0.65 jkg1.00.65 U 1
ug/L EPA 8260B 12/01/11 06:211,1,2,2-Tetrachloroethane [79-34-5] ^1 0.75 jkg1.00.75 U 3
ug/L EPA 8260B 12/01/11 06:211,1,2-Trichloroethane [79-00-5] ^1 0.66 jkg1.00.66 U 1
ug/L EPA 8260B 12/01/11 06:211,1-Dichloroethane [75-34-3] ^1 0.080 jkg1.00.080 U 5
ug/L EPA 8260B 12/01/11 06:211,1-Dichloroethene [75-35-4] ^1 0.60 jkg1.00.60 U 5
ug/L EPA 8260B 12/01/11 06:211,2,3-Trichloropropane [96-18-4] ^1 0.72 jkg1.00.72 U 1
ug/L EPA 8260B 12/01/11 06:211,2-Dibromo-3-chloropropane [96-12-8] ^1 0.48 jkg1.00.48 U 13
ug/L EPA 8260B 12/01/11 06:211,2-Dibromoethane [106-93-4] ^1 0.66 jkg1.00.66 U 1
ug/L EPA 8260B 12/01/11 06:211,2-Dichlorobenzene [95-50-1] ^1 0.11 jkg1.00.11 U 5
ug/L EPA 8260B 12/01/11 06:211,2-Dichloroethane [107-06-2] ^1 0.47 jkg1.00.47 U 1
ug/L EPA 8260B 12/01/11 06:211,2-Dichloropropane [78-87-5] ^1 0.59 jkg1.00.59 U 1
ug/L EPA 8260B 12/01/11 06:211,4-Dichlorobenzene [106-46-7] ^1 0.79 jkg1.00.79 U 1
ug/L EPA 8260B 12/01/11 06:212-Butanone [78-93-3] ^1 1.3 jkg5.01.3 U 100
ug/L EPA 8260B 12/01/11 06:212-Hexanone [591-78-6] ^1 0.88 jkg5.00.88 U 50
ug/L EPA 8260B 12/01/11 06:214-Methyl-2-pentanone [108-10-1] ^1 1.1 jkg5.01.1 U 100
ug/L EPA 8260B 12/01/11 06:21Acetone [67-64-1] ^1 1.2 jkg5.01.2 U 100
ug/L EPA 8260B 12/01/11 06:21Acrylonitrile [107-13-1] ^1 3.5 jkg103.5 U 200
ug/L EPA 8260B 12/01/11 06:21Benzene [71-43-2] ^1 0.68 jkg1.00.68 U 1
ug/L EPA 8260B 12/01/11 06:21Bromochloromethane [74-97-5] ^1 0.87 jkg1.00.87 U 3
ug/L EPA 8260B 12/01/11 06:21Bromodichloromethane [75-27-4] ^1 0.75 jkg1.00.75 U 1
ug/L EPA 8260B 12/01/11 06:21Bromoform [75-25-2] ^1 0.68 jkg1.00.68 U 3
ug/L EPA 8260B 12/01/11 06:21Bromomethane [74-83-9] ^1 0.58 jkg1.00.58 U 10
ug/L EPA 8260B 12/01/11 06:21Carbon disulfide [75-15-0] ^1 1.5 jkg5.01.5 U 100
ug/L EPA 8260B 12/01/11 06:21Carbon tetrachloride [56-23-5] ^1 0.69 jkg1.00.69 U 1
ug/L EPA 8260B 12/01/11 06:21Chlorobenzene [108-90-7] ^1 0.74 jkg1.00.74 U 3
ug/L EPA 8260B 12/01/11 06:21Chloroethane [75-00-3] ^1 0.75 jkg1.00.75 U 10
ug/L EPA 8260B 12/01/11 06:21Chloroform [67-66-3] ^1 0.70 jkg1.00.70 U 5
ug/L EPA 8260B 12/01/11 06:21Chloromethane [74-87-3] ^1 0.55 jkg1.00.55 U 1
ug/L EPA 8260B 12/01/11 06:21cis-1,2-Dichloroethene [156-59-2] ^1 0.72 jkg1.03.7 J 5
ug/L EPA 8260B 12/01/11 06:21cis-1,3-Dichloropropene [10061-01-5] ^1 0.075 jkg1.00.075 U 1
ug/L EPA 8260B 12/01/11 06:21Dibromochloromethane [124-48-1] ^1 0.63 jkg1.00.63 U 3
ug/L EPA 8260B 12/01/11 06:21Dibromomethane [74-95-3] ^1 0.90 jkg1.00.90 U 10
ug/L EPA 8260B 12/01/11 06:21Ethylbenzene [100-41-4] ^1 0.62 jkg1.00.62 U 1
ug/L EPA 8260B 12/01/11 06:21Iodomethane [74-88-4] ^1 1.7 jkg5.01.7 U 10
ug/L EPA 8260B 12/01/11 06:21Methylene chloride [75-09-2] ^1 0.14 jkg1.00.14 U 1
ug/L EPA 8260B 12/01/11 06:21Styrene [100-42-5] ^1 0.053 jkg1.00.053 U 1
ug/L EPA 8260B 12/01/11 06:21Tetrachloroethene [127-18-4] ^1 0.73 jkg1.00.73 U 1
ug/L EPA 8260B 12/01/11 06:21Toluene [108-88-3] ^1 0.85 jkg1.00.85 U 1
ug/L EPA 8260B 12/01/11 06:21trans-1,2-Dichloroethene [156-60-5] ^1 0.12 jkg1.00.12 U 5
ug/L EPA 8260B 12/01/11 06:21trans-1,3-Dichloropropene [10061-02-6] ^1 0.50 jkg1.00.50 U 1
ug/L EPA 8260B 12/01/11 06:21trans-1,4-Dichloro-2-butene [110-57-6] ^1 0.70 jkg1.00.70 U 100
ug/L EPA 8260B 12/01/11 06:21Trichloroethene [79-01-6] ^1 0.72 jkg1.00.72 U 1
Page 7 of 45
www.encolabs.com
3201-MW2Description:Lab Sample ID:C113671-01 11/29/11 12:15Received:
Matrix:Ground Water Sampled:11/28/11 13:14 Work Order:C113671
City of DurhamProject:Sampled By:N. Rathjen/ K. Sizemore
Volatile Organic Compounds by GCMS
^ - ENCO Cary certified analyte [NC 591]
Analyte [CAS Number]DFUnitsResults MDL Method Analyzed ByMRLFlag NotesNC SWSL
ug/L EPA 8260B 12/01/11 06:21Trichlorofluoromethane [75-69-4] ^1 0.66 jkg1.00.66 U 1
ug/L EPA 8260B 12/01/11 06:21Vinyl acetate [108-05-4] ^1 0.95 jkg5.00.95 U 50
ug/L EPA 8260B 12/01/11 06:21Vinyl chloride [75-01-4] ^1 0.60 jkg1.00.60 U 1
ug/L EPA 8260B 12/01/11 06:21Xylenes (Total) [1330-20-7] ^1 2.1 jkg3.02.1 U 5
Surrogates Results Spike Lvl % Rec Batch Method Analyzed By% Rec Limits NotesDF
4-Bromofluorobenzene 51-122103 %jkgEPA 8260B 12/01/11 06:211K300315250.0 1
Dibromofluoromethane 68-11798 %jkgEPA 8260B 12/01/11 06:211K300314950.0 1
Toluene-d8 67-127101 %jkgEPA 8260B 12/01/11 06:211K300315150.0 1
Page 8 of 45
www.encolabs.com
3201-MW2Description:Lab Sample ID:C113671-01 11/29/11 12:15Received:
Matrix:Ground Water Sampled:11/28/11 13:14 Work Order:C113671
City of DurhamProject:Sampled By:N. Rathjen/ K. Sizemore
Metals (total recoverable) by EPA 6000/7000 Series Methods
^ - ENCO Cary certified analyte [NC 591]
Analyte [CAS Number]DFUnitsResults MDL Method Analyzed ByMRLFlag NotesNC SWSL
ug/L EPA 6020A 12/06/11 14:26Antimony [7440-36-0] ^1 0.220 VLO2.000.269 J 6
ug/L EPA 6010C 12/05/11 11:10Arsenic [7440-38-2] ^1 2.80 JDH10.02.80 U 10
ug/L EPA 6010C 12/05/11 11:10Barium [7440-39-3] ^1 1.00 JDH10.0195 100
ug/L EPA 6010C 12/05/11 11:10Beryllium [7440-41-7] ^1 0.100 JDH1.000.204 J 1
ug/L EPA 6010C 12/05/11 11:10Cadmium [7440-43-9] ^1 0.360 JDH1.000.360 U 1
ug/L EPA 6010C 12/05/11 11:10Chromium [7440-47-3] ^1 1.00 JDH10.04.88 J 10
ug/L EPA 6010C 12/05/11 11:10Cobalt [7440-48-4] ^1 1.10 JDH10.01.10 U 10
ug/L EPA 6010C 12/05/11 11:10Copper [7440-50-8] ^1 1.60 JDH10.02.95 J 10
ug/L EPA 6010C 12/05/11 11:10Lead [7439-92-1] ^1 1.90 JDH10.01.90 U 10
ug/L EPA 6010C 12/05/11 11:10Nickel [7440-02-0] ^1 1.80 JDH10.08.84 J 50
ug/L EPA 6010C 12/05/11 11:10Selenium [7782-49-2] ^1 2.70 JDH10.02.70 U 10
ug/L EPA 6010C 12/05/11 11:10Silver [7440-22-4] ^1 1.90 JDH10.02.01 J 10
ug/L EPA 6020A 12/06/11 14:26Thallium [7440-28-0] ^1 0.110 VLO1.000.142 J 5.5
ug/L EPA 6010C 12/05/11 11:10Vanadium [7440-62-2] ^1 1.40 JDH10.01.40 U 25
ug/L EPA 6010C 12/05/11 11:10Zinc [7440-66-6] ^1 3.80 JDH10.018.6 10
This report relates only to the sample as received by the laboratory, and may only be reproduced in full.
Page 9 of 45
www.encolabs.com
3201-MW3R MS/MSDDescription:Lab Sample ID:C113671-02 11/29/11 12:15Received:
Matrix:Ground Water Sampled:11/28/11 11:40 Work Order:C113671
City of DurhamProject:Sampled By:N. Rathjen/ K. Sizemore
Volatile Organic Compounds by GCMS
^ - ENCO Cary certified analyte [NC 591]
Analyte [CAS Number]DFUnitsResults MDL Method Analyzed ByMRLFlag NotesNC SWSL
ug/L EPA 8260B 12/01/11 05:521,1,1,2-Tetrachloroethane [630-20-6] ^1 0.90 jkg1.00.90 U 5
ug/L EPA 8260B 12/01/11 05:521,1,1-Trichloroethane [71-55-6] ^1 0.65 jkg1.00.65 U 1
ug/L EPA 8260B 12/01/11 05:521,1,2,2-Tetrachloroethane [79-34-5] ^1 0.75 jkg1.00.75 U 3
ug/L EPA 8260B 12/01/11 05:521,1,2-Trichloroethane [79-00-5] ^1 0.66 jkg1.00.66 U 1
ug/L EPA 8260B 12/01/11 05:521,1-Dichloroethane [75-34-3] ^1 0.080 jkg1.00.080 U 5
ug/L EPA 8260B 12/01/11 05:521,1-Dichloroethene [75-35-4] ^1 0.60 jkg1.00.60 U 5
ug/L EPA 8260B 12/01/11 05:521,2,3-Trichloropropane [96-18-4] ^1 0.72 jkg1.00.72 U 1
ug/L EPA 8260B 12/01/11 05:521,2-Dibromo-3-chloropropane [96-12-8] ^1 0.48 jkg1.00.48 U 13
ug/L EPA 8260B 12/01/11 05:521,2-Dibromoethane [106-93-4] ^1 0.66 jkg1.00.66 U 1
ug/L EPA 8260B 12/01/11 05:521,2-Dichlorobenzene [95-50-1] ^1 0.11 jkg1.00.11 U 5
ug/L EPA 8260B 12/01/11 05:521,2-Dichloroethane [107-06-2] ^1 0.47 jkg1.00.47 U 1
ug/L EPA 8260B 12/01/11 05:521,2-Dichloropropane [78-87-5] ^1 0.59 jkg1.00.59 U 1
ug/L EPA 8260B 12/01/11 05:521,4-Dichlorobenzene [106-46-7] ^1 0.79 jkg1.00.79 U 1
ug/L EPA 8260B 12/01/11 05:522-Butanone [78-93-3] ^1 1.3 jkg5.01.3 U 100
ug/L EPA 8260B 12/01/11 05:522-Hexanone [591-78-6] ^1 0.88 jkg5.00.88 U 50
ug/L EPA 8260B 12/01/11 05:524-Methyl-2-pentanone [108-10-1] ^1 1.1 jkg5.01.1 U 100
ug/L EPA 8260B 12/01/11 05:52Acetone [67-64-1] ^1 1.2 jkg5.01.2 U 100
ug/L EPA 8260B 12/01/11 05:52Acrylonitrile [107-13-1] ^1 3.5 jkg103.5 U 200
ug/L EPA 8260B 12/01/11 05:52Benzene [71-43-2] ^1 0.68 jkg1.00.68 U 1
ug/L EPA 8260B 12/01/11 05:52Bromochloromethane [74-97-5] ^1 0.87 jkg1.00.87 U 3
ug/L EPA 8260B 12/01/11 05:52Bromodichloromethane [75-27-4] ^1 0.75 jkg1.00.75 U 1
ug/L EPA 8260B 12/01/11 05:52Bromoform [75-25-2] ^1 0.68 jkg1.00.68 U 3
ug/L EPA 8260B 12/01/11 05:52Bromomethane [74-83-9] ^1 0.58 jkg1.00.58 U 10
ug/L EPA 8260B 12/01/11 05:52Carbon disulfide [75-15-0] ^1 1.5 jkg5.01.5 U 100
ug/L EPA 8260B 12/01/11 05:52Carbon tetrachloride [56-23-5] ^1 0.69 jkg1.00.69 U 1
ug/L EPA 8260B 12/01/11 05:52Chlorobenzene [108-90-7] ^1 0.74 jkg1.00.74 U 3
ug/L EPA 8260B 12/01/11 05:52Chloroethane [75-00-3] ^1 0.75 jkg1.00.75 U 10
ug/L EPA 8260B 12/01/11 05:52Chloroform [67-66-3] ^1 0.70 jkg1.00.70 U 5
ug/L EPA 8260B 12/01/11 05:52Chloromethane [74-87-3] ^1 0.55 jkg1.00.55 U 1
ug/L EPA 8260B 12/01/11 05:52cis-1,2-Dichloroethene [156-59-2] ^1 0.72 jkg1.00.72 U 5
ug/L EPA 8260B 12/01/11 05:52cis-1,3-Dichloropropene [10061-01-5] ^1 0.075 jkg1.00.075 U 1
ug/L EPA 8260B 12/01/11 05:52Dibromochloromethane [124-48-1] ^1 0.63 jkg1.00.63 U 3
ug/L EPA 8260B 12/01/11 05:52Dibromomethane [74-95-3] ^1 0.90 jkg1.00.90 U 10
ug/L EPA 8260B 12/01/11 05:52Ethylbenzene [100-41-4] ^1 0.62 jkg1.00.62 U 1
ug/L EPA 8260B 12/01/11 05:52Iodomethane [74-88-4] ^1 1.7 jkg5.01.7 U 10
ug/L EPA 8260B 12/01/11 05:52Methylene chloride [75-09-2] ^1 0.14 jkg1.00.14 U 1
ug/L EPA 8260B 12/01/11 05:52Styrene [100-42-5] ^1 0.053 jkg1.00.053 U 1
ug/L EPA 8260B 12/01/11 05:52Tetrachloroethene [127-18-4] ^1 0.73 jkg1.00.73 U 1
ug/L EPA 8260B 12/01/11 05:52Toluene [108-88-3] ^1 0.85 jkg1.00.85 U 1
ug/L EPA 8260B 12/01/11 05:52trans-1,2-Dichloroethene [156-60-5] ^1 0.12 jkg1.00.12 U 5
ug/L EPA 8260B 12/01/11 05:52trans-1,3-Dichloropropene [10061-02-6] ^1 0.50 jkg1.00.50 U 1
ug/L EPA 8260B 12/01/11 05:52trans-1,4-Dichloro-2-butene [110-57-6] ^1 0.70 jkg1.00.70 U 100
ug/L EPA 8260B 12/01/11 05:52Trichloroethene [79-01-6] ^1 0.72 jkg1.00.72 U 1
ug/L EPA 8260B 12/01/11 05:52Trichlorofluoromethane [75-69-4] ^1 0.66 jkg1.00.66 U 1
ug/L EPA 8260B 12/01/11 05:52Vinyl acetate [108-05-4] ^1 0.95 jkg5.00.95 U 50
ug/L EPA 8260B 12/01/11 05:52Vinyl chloride [75-01-4] ^1 0.60 jkg1.00.60 U 1
Page 10 of 45
www.encolabs.com
3201-MW3R MS/MSDDescription:Lab Sample ID:C113671-02 11/29/11 12:15Received:
Matrix:Ground Water Sampled:11/28/11 11:40 Work Order:C113671
City of DurhamProject:Sampled By:N. Rathjen/ K. Sizemore
Volatile Organic Compounds by GCMS
^ - ENCO Cary certified analyte [NC 591]
Analyte [CAS Number]DFUnitsResults MDL Method Analyzed ByMRLFlag NotesNC SWSL
ug/L EPA 8260B 12/01/11 05:52Xylenes (Total) [1330-20-7] ^1 2.1 jkg3.02.1 U 5
Surrogates Results Spike Lvl % Rec Batch Method Analyzed By% Rec Limits NotesDF
4-Bromofluorobenzene 51-122103 %jkgEPA 8260B 12/01/11 05:521K300315150.0 1
Dibromofluoromethane 68-11799 %jkgEPA 8260B 12/01/11 05:521K300314950.0 1
Toluene-d8 67-127102 %jkgEPA 8260B 12/01/11 05:521K300315150.0 1
Page 11 of 45
www.encolabs.com
3201-MW3R MS/MSDDescription:Lab Sample ID:C113671-02 11/29/11 12:15Received:
Matrix:Ground Water Sampled:11/28/11 11:40 Work Order:C113671
City of DurhamProject:Sampled By:N. Rathjen/ K. Sizemore
Metals (total recoverable) by EPA 6000/7000 Series Methods
^ - ENCO Cary certified analyte [NC 591]
Analyte [CAS Number]DFUnitsResults MDL Method Analyzed ByMRLFlag NotesNC SWSL
ug/L EPA 6020A 12/06/11 14:17Antimony [7440-36-0] ^1 0.220 VLO2.000.277 J 6
ug/L EPA 6010C 12/05/11 11:00Arsenic [7440-38-2] ^1 2.80 JDH10.02.99 J 10
ug/L EPA 6010C 12/05/11 11:00Barium [7440-39-3] ^1 1.00 JDH10.0130 100
ug/L EPA 6010C 12/05/11 11:00Beryllium [7440-41-7] ^1 0.100 JDH1.000.100 U 1
ug/L EPA 6010C 12/05/11 11:00Cadmium [7440-43-9] ^1 0.360 JDH1.000.360 U 1
ug/L EPA 6010C 12/05/11 11:00Chromium [7440-47-3] ^1 1.00 JDH10.03.02 J 10
ug/L EPA 6010C 12/05/11 11:00Cobalt [7440-48-4] ^1 1.10 JDH10.02.74 J 10
ug/L EPA 6010C 12/05/11 11:00Copper [7440-50-8] ^1 1.60 JDH10.01.60 U 10
ug/L EPA 6010C 12/05/11 11:00Lead [7439-92-1] ^1 1.90 JDH10.01.90 U 10
ug/L EPA 6010C 12/05/11 11:00Nickel [7440-02-0] ^1 1.80 JDH10.07.08 J 50
ug/L EPA 6010C 12/05/11 11:00Selenium [7782-49-2] ^1 2.70 JDH10.02.70 U 10
ug/L EPA 6010C 12/05/11 11:00Silver [7440-22-4] ^1 1.90 JDH10.01.90 U 10
ug/L EPA 6020A 12/06/11 14:17Thallium [7440-28-0] ^1 0.110 VLO1.000.110 U 5.5
ug/L EPA 6010C 12/05/11 11:00Vanadium [7440-62-2] ^1 1.40 JDH10.01.77 J 25
ug/L EPA 6010C 12/05/11 11:00Zinc [7440-66-6] ^1 3.80 JDH10.03.80 U 10
This report relates only to the sample as received by the laboratory, and may only be reproduced in full.
Page 12 of 45
www.encolabs.com
3201-MW4RDescription:Lab Sample ID:C113671-03 11/29/11 12:15Received:
Matrix:Ground Water Sampled:11/28/11 10:58 Work Order:C113671
City of DurhamProject:Sampled By:N. Rathjen/ K. Sizemore
Volatile Organic Compounds by GCMS
^ - ENCO Cary certified analyte [NC 591]
Analyte [CAS Number]DFUnitsResults MDL Method Analyzed ByMRLFlag NotesNC SWSL
ug/L EPA 8260B 12/01/11 06:501,1,1,2-Tetrachloroethane [630-20-6] ^1 0.90 jkg1.00.90 U 5
ug/L EPA 8260B 12/01/11 06:501,1,1-Trichloroethane [71-55-6] ^1 0.65 jkg1.00.65 U 1
ug/L EPA 8260B 12/01/11 06:501,1,2,2-Tetrachloroethane [79-34-5] ^1 0.75 jkg1.00.75 U 3
ug/L EPA 8260B 12/01/11 06:501,1,2-Trichloroethane [79-00-5] ^1 0.66 jkg1.00.66 U 1
ug/L EPA 8260B 12/01/11 06:501,1-Dichloroethane [75-34-3] ^1 0.080 jkg1.00.080 U 5
ug/L EPA 8260B 12/01/11 06:501,1-Dichloroethene [75-35-4] ^1 0.60 jkg1.00.60 U 5
ug/L EPA 8260B 12/01/11 06:501,2,3-Trichloropropane [96-18-4] ^1 0.72 jkg1.00.72 U 1
ug/L EPA 8260B 12/01/11 06:501,2-Dibromo-3-chloropropane [96-12-8] ^1 0.48 jkg1.00.48 U 13
ug/L EPA 8260B 12/01/11 06:501,2-Dibromoethane [106-93-4] ^1 0.66 jkg1.00.66 U 1
ug/L EPA 8260B 12/01/11 06:501,2-Dichlorobenzene [95-50-1] ^1 0.11 jkg1.00.11 U 5
ug/L EPA 8260B 12/01/11 06:501,2-Dichloroethane [107-06-2] ^1 0.47 jkg1.00.47 U 1
ug/L EPA 8260B 12/01/11 06:501,2-Dichloropropane [78-87-5] ^1 0.59 jkg1.00.59 U 1
ug/L EPA 8260B 12/01/11 06:501,4-Dichlorobenzene [106-46-7] ^1 0.79 jkg1.00.79 U 1
ug/L EPA 8260B 12/01/11 06:502-Butanone [78-93-3] ^1 1.3 jkg5.01.3 U 100
ug/L EPA 8260B 12/01/11 06:502-Hexanone [591-78-6] ^1 0.88 jkg5.00.88 U 50
ug/L EPA 8260B 12/01/11 06:504-Methyl-2-pentanone [108-10-1] ^1 1.1 jkg5.01.1 U 100
ug/L EPA 8260B 12/01/11 06:50Acetone [67-64-1] ^1 1.2 jkg5.01.2 U 100
ug/L EPA 8260B 12/01/11 06:50Acrylonitrile [107-13-1] ^1 3.5 jkg103.5 U 200
ug/L EPA 8260B 12/01/11 06:50Benzene [71-43-2] ^1 0.68 jkg1.00.68 U 1
ug/L EPA 8260B 12/01/11 06:50Bromochloromethane [74-97-5] ^1 0.87 jkg1.00.87 U 3
ug/L EPA 8260B 12/01/11 06:50Bromodichloromethane [75-27-4] ^1 0.75 jkg1.00.75 U 1
ug/L EPA 8260B 12/01/11 06:50Bromoform [75-25-2] ^1 0.68 jkg1.00.68 U 3
ug/L EPA 8260B 12/01/11 06:50Bromomethane [74-83-9] ^1 0.58 jkg1.00.58 U 10
ug/L EPA 8260B 12/01/11 06:50Carbon disulfide [75-15-0] ^1 1.5 jkg5.01.5 U 100
ug/L EPA 8260B 12/01/11 06:50Carbon tetrachloride [56-23-5] ^1 0.69 jkg1.00.69 U 1
ug/L EPA 8260B 12/01/11 06:50Chlorobenzene [108-90-7] ^1 0.74 jkg1.00.74 U 3
ug/L EPA 8260B 12/01/11 06:50Chloroethane [75-00-3] ^1 0.75 jkg1.00.75 U 10
ug/L EPA 8260B 12/01/11 06:50Chloroform [67-66-3] ^1 0.70 jkg1.00.70 U 5
ug/L EPA 8260B 12/01/11 06:50Chloromethane [74-87-3] ^1 0.55 jkg1.00.55 U 1
ug/L EPA 8260B 12/01/11 06:50cis-1,2-Dichloroethene [156-59-2] ^1 0.72 jkg1.00.72 U 5
ug/L EPA 8260B 12/01/11 06:50cis-1,3-Dichloropropene [10061-01-5] ^1 0.075 jkg1.00.075 U 1
ug/L EPA 8260B 12/01/11 06:50Dibromochloromethane [124-48-1] ^1 0.63 jkg1.00.63 U 3
ug/L EPA 8260B 12/01/11 06:50Dibromomethane [74-95-3] ^1 0.90 jkg1.00.90 U 10
ug/L EPA 8260B 12/01/11 06:50Ethylbenzene [100-41-4] ^1 0.62 jkg1.00.62 U 1
ug/L EPA 8260B 12/01/11 06:50Iodomethane [74-88-4] ^1 1.7 jkg5.01.7 U 10
ug/L EPA 8260B 12/01/11 06:50Methylene chloride [75-09-2] ^1 0.14 jkg1.00.14 U 1
ug/L EPA 8260B 12/01/11 06:50Styrene [100-42-5] ^1 0.053 jkg1.00.053 U 1
ug/L EPA 8260B 12/01/11 06:50Tetrachloroethene [127-18-4] ^1 0.73 jkg1.00.73 U 1
ug/L EPA 8260B 12/01/11 06:50Toluene [108-88-3] ^1 0.85 jkg1.00.85 U 1
ug/L EPA 8260B 12/01/11 06:50trans-1,2-Dichloroethene [156-60-5] ^1 0.12 jkg1.00.12 U 5
ug/L EPA 8260B 12/01/11 06:50trans-1,3-Dichloropropene [10061-02-6] ^1 0.50 jkg1.00.50 U 1
ug/L EPA 8260B 12/01/11 06:50trans-1,4-Dichloro-2-butene [110-57-6] ^1 0.70 jkg1.00.70 U 100
ug/L EPA 8260B 12/01/11 06:50Trichloroethene [79-01-6] ^1 0.72 jkg1.00.72 U 1
ug/L EPA 8260B 12/01/11 06:50Trichlorofluoromethane [75-69-4] ^1 0.66 jkg1.00.66 U 1
ug/L EPA 8260B 12/01/11 06:50Vinyl acetate [108-05-4] ^1 0.95 jkg5.00.95 U 50
ug/L EPA 8260B 12/01/11 06:50Vinyl chloride [75-01-4] ^1 0.60 jkg1.00.60 U 1
Page 13 of 45
www.encolabs.com
3201-MW4RDescription:Lab Sample ID:C113671-03 11/29/11 12:15Received:
Matrix:Ground Water Sampled:11/28/11 10:58 Work Order:C113671
City of DurhamProject:Sampled By:N. Rathjen/ K. Sizemore
Volatile Organic Compounds by GCMS
^ - ENCO Cary certified analyte [NC 591]
Analyte [CAS Number]DFUnitsResults MDL Method Analyzed ByMRLFlag NotesNC SWSL
ug/L EPA 8260B 12/01/11 06:50Xylenes (Total) [1330-20-7] ^1 2.1 jkg3.02.1 U 5
Surrogates Results Spike Lvl % Rec Batch Method Analyzed By% Rec Limits NotesDF
4-Bromofluorobenzene 51-122102 %jkgEPA 8260B 12/01/11 06:501K300315150.0 1
Dibromofluoromethane 68-11798 %jkgEPA 8260B 12/01/11 06:501K300314950.0 1
Toluene-d8 67-127102 %jkgEPA 8260B 12/01/11 06:501K300315150.0 1
Page 14 of 45
www.encolabs.com
3201-MW4RDescription:Lab Sample ID:C113671-03 11/29/11 12:15Received:
Matrix:Ground Water Sampled:11/28/11 10:58 Work Order:C113671
City of DurhamProject:Sampled By:N. Rathjen/ K. Sizemore
Metals (total recoverable) by EPA 6000/7000 Series Methods
^ - ENCO Cary certified analyte [NC 591]
Analyte [CAS Number]DFUnitsResults MDL Method Analyzed ByMRLFlag NotesNC SWSL
ug/L EPA 6020A 12/06/11 14:28Antimony [7440-36-0] ^1 0.220 VLO2.000.635 J 6
ug/L EPA 6010C 12/05/11 11:12Arsenic [7440-38-2] ^1 2.80 JDH10.02.80 U 10
ug/L EPA 6010C 12/05/11 11:12Barium [7440-39-3] ^1 1.00 JDH10.0540 100
ug/L EPA 6010C 12/05/11 11:12Beryllium [7440-41-7] ^1 0.100 JDH1.000.100 U 1
ug/L EPA 6010C 12/05/11 11:12Cadmium [7440-43-9] ^1 0.360 JDH1.000.360 U 1
ug/L EPA 6010C 12/05/11 11:12Chromium [7440-47-3] ^1 1.00 JDH10.01.00 U 10
ug/L EPA 6010C 12/05/11 11:12Cobalt [7440-48-4] ^1 1.10 JDH10.01.10 U 10
ug/L EPA 6010C 12/05/11 11:12Copper [7440-50-8] ^1 1.60 JDH10.01.60 U 10
ug/L EPA 6010C 12/05/11 11:12Lead [7439-92-1] ^1 1.90 JDH10.01.90 U 10
ug/L EPA 6010C 12/05/11 11:12Nickel [7440-02-0] ^1 1.80 JDH10.02.95 J 50
ug/L EPA 6010C 12/05/11 11:12Selenium [7782-49-2] ^1 2.70 JDH10.02.70 U 10
ug/L EPA 6010C 12/05/11 11:12Silver [7440-22-4] ^1 1.90 JDH10.01.90 U 10
ug/L EPA 6020A 12/06/11 14:28Thallium [7440-28-0] ^1 0.110 VLO1.000.281 J 5.5
ug/L EPA 6010C 12/05/11 11:12Vanadium [7440-62-2] ^1 1.40 JDH10.01.40 U 25
ug/L EPA 6010C 12/05/11 11:12Zinc [7440-66-6] ^1 3.80 JDH10.03.80 U 10
This report relates only to the sample as received by the laboratory, and may only be reproduced in full.
Page 15 of 45
www.encolabs.com
3201-MW5Description:Lab Sample ID:C113671-04 11/29/11 12:15Received:
Matrix:Ground Water Sampled:11/28/11 14:16 Work Order:C113671
City of DurhamProject:Sampled By:N. Rathjen/ K. Sizemore
Volatile Organic Compounds by GCMS
^ - ENCO Cary certified analyte [NC 591]
Analyte [CAS Number]DFUnitsResults MDL Method Analyzed ByMRLFlag NotesNC SWSL
ug/L EPA 8260B 12/01/11 07:201,1,1,2-Tetrachloroethane [630-20-6] ^1 0.90 jkg1.00.90 U 5
ug/L EPA 8260B 12/01/11 07:201,1,1-Trichloroethane [71-55-6] ^1 0.65 jkg1.00.65 U 1
ug/L EPA 8260B 12/01/11 07:201,1,2,2-Tetrachloroethane [79-34-5] ^1 0.75 jkg1.00.75 U 3
ug/L EPA 8260B 12/01/11 07:201,1,2-Trichloroethane [79-00-5] ^1 0.66 jkg1.00.66 U 1
ug/L EPA 8260B 12/01/11 07:201,1-Dichloroethane [75-34-3] ^1 0.080 jkg1.00.080 U 5
ug/L EPA 8260B 12/01/11 07:201,1-Dichloroethene [75-35-4] ^1 0.60 jkg1.00.60 U 5
ug/L EPA 8260B 12/01/11 07:201,2,3-Trichloropropane [96-18-4] ^1 0.72 jkg1.00.72 U 1
ug/L EPA 8260B 12/01/11 07:201,2-Dibromo-3-chloropropane [96-12-8] ^1 0.48 jkg1.00.48 U 13
ug/L EPA 8260B 12/01/11 07:201,2-Dibromoethane [106-93-4] ^1 0.66 jkg1.00.66 U 1
ug/L EPA 8260B 12/01/11 07:201,2-Dichlorobenzene [95-50-1] ^1 0.11 jkg1.00.11 U 5
ug/L EPA 8260B 12/01/11 07:201,2-Dichloroethane [107-06-2] ^1 0.47 jkg1.00.47 U 1
ug/L EPA 8260B 12/01/11 07:201,2-Dichloropropane [78-87-5] ^1 0.59 jkg1.00.59 U 1
ug/L EPA 8260B 12/01/11 07:201,4-Dichlorobenzene [106-46-7] ^1 0.79 jkg1.00.79 U 1
ug/L EPA 8260B 12/01/11 07:202-Butanone [78-93-3] ^1 1.3 jkg5.01.3 U 100
ug/L EPA 8260B 12/01/11 07:202-Hexanone [591-78-6] ^1 0.88 jkg5.00.88 U 50
ug/L EPA 8260B 12/01/11 07:204-Methyl-2-pentanone [108-10-1] ^1 1.1 jkg5.01.1 U 100
ug/L EPA 8260B 12/01/11 07:20Acetone [67-64-1] ^1 1.2 jkg5.01.2 U 100
ug/L EPA 8260B 12/01/11 07:20Acrylonitrile [107-13-1] ^1 3.5 jkg103.5 U 200
ug/L EPA 8260B 12/01/11 07:20Benzene [71-43-2] ^1 0.68 jkg1.00.68 U 1
ug/L EPA 8260B 12/01/11 07:20Bromochloromethane [74-97-5] ^1 0.87 jkg1.00.87 U 3
ug/L EPA 8260B 12/01/11 07:20Bromodichloromethane [75-27-4] ^1 0.75 jkg1.00.75 U 1
ug/L EPA 8260B 12/01/11 07:20Bromoform [75-25-2] ^1 0.68 jkg1.00.68 U 3
ug/L EPA 8260B 12/01/11 07:20Bromomethane [74-83-9] ^1 0.58 jkg1.00.58 U 10
ug/L EPA 8260B 12/01/11 07:20Carbon disulfide [75-15-0] ^1 1.5 jkg5.01.5 U 100
ug/L EPA 8260B 12/01/11 07:20Carbon tetrachloride [56-23-5] ^1 0.69 jkg1.00.69 U 1
ug/L EPA 8260B 12/01/11 07:20Chlorobenzene [108-90-7] ^1 0.74 jkg1.00.74 U 3
ug/L EPA 8260B 12/01/11 07:20Chloroethane [75-00-3] ^1 0.75 jkg1.00.75 U 10
ug/L EPA 8260B 12/01/11 07:20Chloroform [67-66-3] ^1 0.70 jkg1.00.70 U 5
ug/L EPA 8260B 12/01/11 07:20Chloromethane [74-87-3] ^1 0.55 jkg1.00.55 U 1
ug/L EPA 8260B 12/01/11 07:20cis-1,2-Dichloroethene [156-59-2] ^1 0.72 jkg1.00.72 U 5
ug/L EPA 8260B 12/01/11 07:20cis-1,3-Dichloropropene [10061-01-5] ^1 0.075 jkg1.00.075 U 1
ug/L EPA 8260B 12/01/11 07:20Dibromochloromethane [124-48-1] ^1 0.63 jkg1.00.63 U 3
ug/L EPA 8260B 12/01/11 07:20Dibromomethane [74-95-3] ^1 0.90 jkg1.00.90 U 10
ug/L EPA 8260B 12/01/11 07:20Ethylbenzene [100-41-4] ^1 0.62 jkg1.00.62 U 1
ug/L EPA 8260B 12/01/11 07:20Iodomethane [74-88-4] ^1 1.7 jkg5.01.7 U 10
ug/L EPA 8260B 12/01/11 07:20Methylene chloride [75-09-2] ^1 0.14 jkg1.00.14 U 1
ug/L EPA 8260B 12/01/11 07:20Styrene [100-42-5] ^1 0.053 jkg1.00.053 U 1
ug/L EPA 8260B 12/01/11 07:20Tetrachloroethene [127-18-4] ^1 0.73 jkg1.00.73 U 1
ug/L EPA 8260B 12/01/11 07:20Toluene [108-88-3] ^1 0.85 jkg1.00.85 U 1
ug/L EPA 8260B 12/01/11 07:20trans-1,2-Dichloroethene [156-60-5] ^1 0.12 jkg1.00.12 U 5
ug/L EPA 8260B 12/01/11 07:20trans-1,3-Dichloropropene [10061-02-6] ^1 0.50 jkg1.00.50 U 1
ug/L EPA 8260B 12/01/11 07:20trans-1,4-Dichloro-2-butene [110-57-6] ^1 0.70 jkg1.00.70 U 100
ug/L EPA 8260B 12/01/11 07:20Trichloroethene [79-01-6] ^1 0.72 jkg1.00.72 U 1
ug/L EPA 8260B 12/01/11 07:20Trichlorofluoromethane [75-69-4] ^1 0.66 jkg1.00.66 U 1
ug/L EPA 8260B 12/01/11 07:20Vinyl acetate [108-05-4] ^1 0.95 jkg5.00.95 U 50
ug/L EPA 8260B 12/01/11 07:20Vinyl chloride [75-01-4] ^1 0.60 jkg1.00.60 U 1
Page 16 of 45
www.encolabs.com
3201-MW5Description:Lab Sample ID:C113671-04 11/29/11 12:15Received:
Matrix:Ground Water Sampled:11/28/11 14:16 Work Order:C113671
City of DurhamProject:Sampled By:N. Rathjen/ K. Sizemore
Volatile Organic Compounds by GCMS
^ - ENCO Cary certified analyte [NC 591]
Analyte [CAS Number]DFUnitsResults MDL Method Analyzed ByMRLFlag NotesNC SWSL
ug/L EPA 8260B 12/01/11 07:20Xylenes (Total) [1330-20-7] ^1 2.1 jkg3.02.1 U 5
Surrogates Results Spike Lvl % Rec Batch Method Analyzed By% Rec Limits NotesDF
4-Bromofluorobenzene 51-122103 %jkgEPA 8260B 12/01/11 07:201K300315150.0 1
Dibromofluoromethane 68-117100 %jkgEPA 8260B 12/01/11 07:201K300315050.0 1
Toluene-d8 67-127102 %jkgEPA 8260B 12/01/11 07:201K300315150.0 1
Page 17 of 45
www.encolabs.com
3201-MW5Description:Lab Sample ID:C113671-04 11/29/11 12:15Received:
Matrix:Ground Water Sampled:11/28/11 14:16 Work Order:C113671
City of DurhamProject:Sampled By:N. Rathjen/ K. Sizemore
Metals (total recoverable) by EPA 6000/7000 Series Methods
^ - ENCO Cary certified analyte [NC 591]
Analyte [CAS Number]DFUnitsResults MDL Method Analyzed ByMRLFlag NotesNC SWSL
ug/L EPA 6020A 12/06/11 14:29Antimony [7440-36-0] ^1 0.220 VLO2.000.220 U 6
ug/L EPA 6010C 12/05/11 11:14Arsenic [7440-38-2] ^1 2.80 JDH10.03.24 J 10
ug/L EPA 6010C 12/05/11 11:14Barium [7440-39-3] ^1 1.00 JDH10.01870 100
ug/L EPA 6010C 12/05/11 11:14Beryllium [7440-41-7] ^1 0.100 JDH1.000.100 U 1
ug/L EPA 6010C 12/05/11 11:14Cadmium [7440-43-9] ^1 0.360 JDH1.000.360 U 1
ug/L EPA 6010C 12/05/11 11:14Chromium [7440-47-3] ^1 1.00 JDH10.01.27 J 10
ug/L EPA 6010C 12/05/11 11:14Cobalt [7440-48-4] ^1 1.10 JDH10.01.10 U 10
ug/L EPA 6010C 12/05/11 11:14Copper [7440-50-8] ^1 1.60 JDH10.01.60 U 10
ug/L EPA 6010C 12/05/11 11:14Lead [7439-92-1] ^1 1.90 JDH10.01.90 U 10
ug/L EPA 6010C 12/05/11 11:14Nickel [7440-02-0] ^1 1.80 JDH10.02.84 J 50
ug/L EPA 6010C 12/05/11 11:14Selenium [7782-49-2] ^1 2.70 JDH10.02.70 U 10
ug/L EPA 6010C 12/05/11 11:14Silver [7440-22-4] ^1 1.90 JDH10.01.90 U 10
ug/L EPA 6020A 12/06/11 14:29Thallium [7440-28-0] ^1 0.110 VLO1.000.110 U 5.5
ug/L EPA 6010C 12/05/11 11:14Vanadium [7440-62-2] ^1 1.40 JDH10.01.40 U 25
ug/L EPA 6010C 12/05/11 11:14Zinc [7440-66-6] ^1 3.80 JDH10.03.80 U 10
This report relates only to the sample as received by the laboratory, and may only be reproduced in full.
Page 18 of 45
www.encolabs.com
3201-MW9RDescription:Lab Sample ID:C113671-05 11/29/11 12:15Received:
Matrix:Ground Water Sampled:11/28/11 15:12 Work Order:C113671
City of DurhamProject:Sampled By:N. Rathjen/ K. Sizemore
Volatile Organic Compounds by GCMS
^ - ENCO Cary certified analyte [NC 591]
Analyte [CAS Number]DFUnitsResults MDL Method Analyzed ByMRLFlag NotesNC SWSL
ug/L EPA 8260B 12/01/11 07:491,1,1,2-Tetrachloroethane [630-20-6] ^1 0.90 jkg1.00.90 U 5
ug/L EPA 8260B 12/01/11 07:491,1,1-Trichloroethane [71-55-6] ^1 0.65 jkg1.00.65 U 1
ug/L EPA 8260B 12/01/11 07:491,1,2,2-Tetrachloroethane [79-34-5] ^1 0.75 jkg1.00.75 U 3
ug/L EPA 8260B 12/01/11 07:491,1,2-Trichloroethane [79-00-5] ^1 0.66 jkg1.00.66 U 1
ug/L EPA 8260B 12/01/11 07:491,1-Dichloroethane [75-34-3] ^1 0.080 jkg1.00.080 U 5
ug/L EPA 8260B 12/01/11 07:491,1-Dichloroethene [75-35-4] ^1 0.60 jkg1.00.60 U 5
ug/L EPA 8260B 12/01/11 07:491,2,3-Trichloropropane [96-18-4] ^1 0.72 jkg1.00.72 U 1
ug/L EPA 8260B 12/01/11 07:491,2-Dibromo-3-chloropropane [96-12-8] ^1 0.48 jkg1.00.48 U 13
ug/L EPA 8260B 12/01/11 07:491,2-Dibromoethane [106-93-4] ^1 0.66 jkg1.00.66 U 1
ug/L EPA 8260B 12/01/11 07:491,2-Dichlorobenzene [95-50-1] ^1 0.11 jkg1.00.11 U 5
ug/L EPA 8260B 12/01/11 07:491,2-Dichloroethane [107-06-2] ^1 0.47 jkg1.00.47 U 1
ug/L EPA 8260B 12/01/11 07:491,2-Dichloropropane [78-87-5] ^1 0.59 jkg1.00.59 U 1
ug/L EPA 8260B 12/01/11 07:491,4-Dichlorobenzene [106-46-7] ^1 0.79 jkg1.00.79 U 1
ug/L EPA 8260B 12/01/11 07:492-Butanone [78-93-3] ^1 1.3 jkg5.01.3 U 100
ug/L EPA 8260B 12/01/11 07:492-Hexanone [591-78-6] ^1 0.88 jkg5.00.88 U 50
ug/L EPA 8260B 12/01/11 07:494-Methyl-2-pentanone [108-10-1] ^1 1.1 jkg5.01.1 U 100
ug/L EPA 8260B 12/01/11 07:49Acetone [67-64-1] ^1 1.2 jkg5.01.2 U 100
ug/L EPA 8260B 12/01/11 07:49Acrylonitrile [107-13-1] ^1 3.5 jkg103.5 U 200
ug/L EPA 8260B 12/01/11 07:49Benzene [71-43-2] ^1 0.68 jkg1.00.68 U 1
ug/L EPA 8260B 12/01/11 07:49Bromochloromethane [74-97-5] ^1 0.87 jkg1.00.87 U 3
ug/L EPA 8260B 12/01/11 07:49Bromodichloromethane [75-27-4] ^1 0.75 jkg1.00.75 U 1
ug/L EPA 8260B 12/01/11 07:49Bromoform [75-25-2] ^1 0.68 jkg1.00.68 U 3
ug/L EPA 8260B 12/01/11 07:49Bromomethane [74-83-9] ^1 0.58 jkg1.00.58 U 10
ug/L EPA 8260B 12/01/11 07:49Carbon disulfide [75-15-0] ^1 1.5 jkg5.01.5 U 100
ug/L EPA 8260B 12/01/11 07:49Carbon tetrachloride [56-23-5] ^1 0.69 jkg1.00.69 U 1
ug/L EPA 8260B 12/01/11 07:49Chlorobenzene [108-90-7] ^1 0.74 jkg1.00.74 U 3
ug/L EPA 8260B 12/01/11 07:49Chloroethane [75-00-3] ^1 0.75 jkg1.00.75 U 10
ug/L EPA 8260B 12/01/11 07:49Chloroform [67-66-3] ^1 0.70 jkg1.00.70 U 5
ug/L EPA 8260B 12/01/11 07:49Chloromethane [74-87-3] ^1 0.55 jkg1.00.55 U 1
ug/L EPA 8260B 12/01/11 07:49cis-1,2-Dichloroethene [156-59-2] ^1 0.72 jkg1.00.72 U 5
ug/L EPA 8260B 12/01/11 07:49cis-1,3-Dichloropropene [10061-01-5] ^1 0.075 jkg1.00.075 U 1
ug/L EPA 8260B 12/01/11 07:49Dibromochloromethane [124-48-1] ^1 0.63 jkg1.00.63 U 3
ug/L EPA 8260B 12/01/11 07:49Dibromomethane [74-95-3] ^1 0.90 jkg1.00.90 U 10
ug/L EPA 8260B 12/01/11 07:49Ethylbenzene [100-41-4] ^1 0.62 jkg1.00.62 U 1
ug/L EPA 8260B 12/01/11 07:49Iodomethane [74-88-4] ^1 1.7 jkg5.01.7 U 10
ug/L EPA 8260B 12/01/11 07:49Methylene chloride [75-09-2] ^1 0.14 jkg1.00.14 U 1
ug/L EPA 8260B 12/01/11 07:49Styrene [100-42-5] ^1 0.053 jkg1.00.053 U 1
ug/L EPA 8260B 12/01/11 07:49Tetrachloroethene [127-18-4] ^1 0.73 jkg1.00.73 U 1
ug/L EPA 8260B 12/01/11 07:49Toluene [108-88-3] ^1 0.85 jkg1.00.85 U 1
ug/L EPA 8260B 12/01/11 07:49trans-1,2-Dichloroethene [156-60-5] ^1 0.12 jkg1.00.12 U 5
ug/L EPA 8260B 12/01/11 07:49trans-1,3-Dichloropropene [10061-02-6] ^1 0.50 jkg1.00.50 U 1
ug/L EPA 8260B 12/01/11 07:49trans-1,4-Dichloro-2-butene [110-57-6] ^1 0.70 jkg1.00.70 U 100
ug/L EPA 8260B 12/01/11 07:49Trichloroethene [79-01-6] ^1 0.72 jkg1.00.72 U 1
ug/L EPA 8260B 12/01/11 07:49Trichlorofluoromethane [75-69-4] ^1 0.66 jkg1.00.66 U 1
ug/L EPA 8260B 12/01/11 07:49Vinyl acetate [108-05-4] ^1 0.95 jkg5.00.95 U 50
ug/L EPA 8260B 12/01/11 07:49Vinyl chloride [75-01-4] ^1 0.60 jkg1.00.60 U 1
Page 19 of 45
www.encolabs.com
3201-MW9RDescription:Lab Sample ID:C113671-05 11/29/11 12:15Received:
Matrix:Ground Water Sampled:11/28/11 15:12 Work Order:C113671
City of DurhamProject:Sampled By:N. Rathjen/ K. Sizemore
Volatile Organic Compounds by GCMS
^ - ENCO Cary certified analyte [NC 591]
Analyte [CAS Number]DFUnitsResults MDL Method Analyzed ByMRLFlag NotesNC SWSL
ug/L EPA 8260B 12/01/11 07:49Xylenes (Total) [1330-20-7] ^1 2.1 jkg3.02.1 U 5
Surrogates Results Spike Lvl % Rec Batch Method Analyzed By% Rec Limits NotesDF
4-Bromofluorobenzene 51-122103 %jkgEPA 8260B 12/01/11 07:491K300315250.0 1
Dibromofluoromethane 68-11799 %jkgEPA 8260B 12/01/11 07:491K300314950.0 1
Toluene-d8 67-127103 %jkgEPA 8260B 12/01/11 07:491K300315250.0 1
Page 20 of 45
www.encolabs.com
3201-MW9RDescription:Lab Sample ID:C113671-05 11/29/11 12:15Received:
Matrix:Ground Water Sampled:11/28/11 15:12 Work Order:C113671
City of DurhamProject:Sampled By:N. Rathjen/ K. Sizemore
Metals (total recoverable) by EPA 6000/7000 Series Methods
^ - ENCO Cary certified analyte [NC 591]
Analyte [CAS Number]DFUnitsResults MDL Method Analyzed ByMRLFlag NotesNC SWSL
ug/L EPA 6020A 12/06/11 14:31Antimony [7440-36-0] ^1 0.220 VLO2.000.220 U 6
ug/L EPA 6010C 12/05/11 11:22Arsenic [7440-38-2] ^1 2.80 JDH10.04.99 J 10
ug/L EPA 6010C 12/05/11 11:22Barium [7440-39-3] ^1 1.00 JDH10.080.4 J 100
ug/L EPA 6010C 12/05/11 11:22Beryllium [7440-41-7] ^1 0.100 JDH1.000.770 J 1
ug/L EPA 6010C 12/05/11 11:22Cadmium [7440-43-9] ^1 0.360 JDH1.000.360 U 1
ug/L EPA 6010C 12/05/11 11:22Chromium [7440-47-3] ^1 1.00 JDH10.07.67 J 10
ug/L EPA 6010C 12/05/11 11:22Cobalt [7440-48-4] ^1 1.10 JDH10.07.63 J 10
ug/L EPA 6010C 12/05/11 11:22Copper [7440-50-8] ^1 1.60 JDH10.05.69 J 10
ug/L EPA 6010C 12/05/11 11:22Lead [7439-92-1] ^1 1.90 JDH10.02.81 J 10
ug/L EPA 6010C 12/05/11 11:22Nickel [7440-02-0] ^1 1.80 JDH10.05.78 J 50
ug/L EPA 6010C 12/05/11 11:22Selenium [7782-49-2] ^1 2.70 JDH10.02.70 U 10
ug/L EPA 6010C 12/05/11 11:22Silver [7440-22-4] ^1 1.90 JDH10.01.90 U 10
ug/L EPA 6020A 12/06/11 14:31Thallium [7440-28-0] ^1 0.110 VLO1.000.110 U 5.5
ug/L EPA 6010C 12/05/11 11:22Vanadium [7440-62-2] ^1 1.40 JDH10.09.59 J 25
ug/L EPA 6010C 12/05/11 11:22Zinc [7440-66-6] ^1 3.80 JDH10.021.7 10
This report relates only to the sample as received by the laboratory, and may only be reproduced in full.
Page 21 of 45
www.encolabs.com
3201-MW10Description:Lab Sample ID:C113671-06 11/29/11 12:15Received:
Matrix:Ground Water Sampled:11/28/11 12:35 Work Order:C113671
City of DurhamProject:Sampled By:N. Rathjen/ K. Sizemore
Volatile Organic Compounds by GCMS
^ - ENCO Cary certified analyte [NC 591]
Analyte [CAS Number]DFUnitsResults MDL Method Analyzed ByMRLFlag NotesNC SWSL
ug/L EPA 8260B 12/01/11 08:191,1,1,2-Tetrachloroethane [630-20-6] ^1 0.90 jkg1.00.90 U 5
ug/L EPA 8260B 12/01/11 08:191,1,1-Trichloroethane [71-55-6] ^1 0.65 jkg1.00.65 U 1
ug/L EPA 8260B 12/01/11 08:191,1,2,2-Tetrachloroethane [79-34-5] ^1 0.75 jkg1.00.75 U 3
ug/L EPA 8260B 12/01/11 08:191,1,2-Trichloroethane [79-00-5] ^1 0.66 jkg1.00.66 U 1
ug/L EPA 8260B 12/01/11 08:191,1-Dichloroethane [75-34-3] ^1 0.080 jkg1.03.1 J 5
ug/L EPA 8260B 12/01/11 08:191,1-Dichloroethene [75-35-4] ^1 0.60 jkg1.00.60 U 5
ug/L EPA 8260B 12/01/11 08:191,2,3-Trichloropropane [96-18-4] ^1 0.72 jkg1.00.72 U 1
ug/L EPA 8260B 12/01/11 08:191,2-Dibromo-3-chloropropane [96-12-8] ^1 0.48 jkg1.00.48 U 13
ug/L EPA 8260B 12/01/11 08:191,2-Dibromoethane [106-93-4] ^1 0.66 jkg1.00.66 U 1
ug/L EPA 8260B 12/01/11 08:191,2-Dichlorobenzene [95-50-1] ^1 0.11 jkg1.00.11 U 5
ug/L EPA 8260B 12/01/11 08:191,2-Dichloroethane [107-06-2] ^1 0.47 jkg1.00.47 U 1
ug/L EPA 8260B 12/01/11 08:191,2-Dichloropropane [78-87-5] ^1 0.59 jkg1.04.0 1
ug/L EPA 8260B 12/01/11 08:191,4-Dichlorobenzene [106-46-7] ^1 0.79 jkg1.00.79 U 1
ug/L EPA 8260B 12/01/11 08:192-Butanone [78-93-3] ^1 1.3 jkg5.01.3 U 100
ug/L EPA 8260B 12/01/11 08:192-Hexanone [591-78-6] ^1 0.88 jkg5.00.88 U 50
ug/L EPA 8260B 12/01/11 08:194-Methyl-2-pentanone [108-10-1] ^1 1.1 jkg5.01.1 U 100
ug/L EPA 8260B 12/01/11 08:19Acetone [67-64-1] ^1 1.2 jkg5.01.2 U 100
ug/L EPA 8260B 12/01/11 08:19Acrylonitrile [107-13-1] ^1 3.5 jkg103.5 U 200
ug/L EPA 8260B 12/01/11 08:19Benzene [71-43-2] ^1 0.68 jkg1.01.6 1
ug/L EPA 8260B 12/01/11 08:19Bromochloromethane [74-97-5] ^1 0.87 jkg1.00.87 U 3
ug/L EPA 8260B 12/01/11 08:19Bromodichloromethane [75-27-4] ^1 0.75 jkg1.00.75 U 1
ug/L EPA 8260B 12/01/11 08:19Bromoform [75-25-2] ^1 0.68 jkg1.00.68 U 3
ug/L EPA 8260B 12/01/11 08:19Bromomethane [74-83-9] ^1 0.58 jkg1.00.58 U 10
ug/L EPA 8260B 12/01/11 08:19Carbon disulfide [75-15-0] ^1 1.5 jkg5.01.5 U 100
ug/L EPA 8260B 12/01/11 08:19Carbon tetrachloride [56-23-5] ^1 0.69 jkg1.00.69 U 1
ug/L EPA 8260B 12/01/11 08:19Chlorobenzene [108-90-7] ^1 0.74 jkg1.00.74 U 3
ug/L EPA 8260B 12/01/11 08:19Chloroethane [75-00-3] ^1 0.75 jkg1.00.75 U 10
ug/L EPA 8260B 12/01/11 08:19Chloroform [67-66-3] ^1 0.70 jkg1.00.70 U 5
ug/L EPA 8260B 12/01/11 08:19Chloromethane [74-87-3] ^1 0.55 jkg1.00.55 U 1
ug/L EPA 8260B 12/01/11 08:19cis-1,2-Dichloroethene [156-59-2] ^1 0.72 jkg1.0140 5
ug/L EPA 8260B 12/01/11 08:19cis-1,3-Dichloropropene [10061-01-5] ^1 0.075 jkg1.00.075 U 1
ug/L EPA 8260B 12/01/11 08:19Dibromochloromethane [124-48-1] ^1 0.63 jkg1.00.63 U 3
ug/L EPA 8260B 12/01/11 08:19Dibromomethane [74-95-3] ^1 0.90 jkg1.00.90 U 10
ug/L EPA 8260B 12/01/11 08:19Ethylbenzene [100-41-4] ^1 0.62 jkg1.00.62 U 1
ug/L EPA 8260B 12/01/11 08:19Iodomethane [74-88-4] ^1 1.7 jkg5.01.7 U 10
ug/L EPA 8260B 12/01/11 08:19Methylene chloride [75-09-2] ^1 0.14 jkg1.00.14 U 1
ug/L EPA 8260B 12/01/11 08:19Styrene [100-42-5] ^1 0.053 jkg1.00.053 U 1
ug/L EPA 8260B 12/01/11 08:19Tetrachloroethene [127-18-4] ^1 0.73 jkg1.00.73 U 1
ug/L EPA 8260B 12/01/11 08:19Toluene [108-88-3] ^1 0.85 jkg1.00.85 U 1
ug/L EPA 8260B 12/01/11 08:19trans-1,2-Dichloroethene [156-60-5] ^1 0.12 jkg1.03.4 J 5
ug/L EPA 8260B 12/01/11 08:19trans-1,3-Dichloropropene [10061-02-6] ^1 0.50 jkg1.00.50 U 1
ug/L EPA 8260B 12/01/11 08:19trans-1,4-Dichloro-2-butene [110-57-6] ^1 0.70 jkg1.00.70 U 100
ug/L EPA 8260B 12/01/11 08:19Trichloroethene [79-01-6] ^1 0.72 jkg1.05.9 1
ug/L EPA 8260B 12/01/11 08:19Trichlorofluoromethane [75-69-4] ^1 0.66 jkg1.00.66 U 1
ug/L EPA 8260B 12/01/11 08:19Vinyl acetate [108-05-4] ^1 0.95 jkg5.00.95 U 50
ug/L EPA 8260B 12/01/11 08:19Vinyl chloride [75-01-4] ^1 0.60 jkg1.09.9 1
Page 22 of 45
www.encolabs.com
3201-MW10Description:Lab Sample ID:C113671-06 11/29/11 12:15Received:
Matrix:Ground Water Sampled:11/28/11 12:35 Work Order:C113671
City of DurhamProject:Sampled By:N. Rathjen/ K. Sizemore
Volatile Organic Compounds by GCMS
^ - ENCO Cary certified analyte [NC 591]
Analyte [CAS Number]DFUnitsResults MDL Method Analyzed ByMRLFlag NotesNC SWSL
ug/L EPA 8260B 12/01/11 08:19Xylenes (Total) [1330-20-7] ^1 2.1 jkg3.02.1 U 5
Surrogates Results Spike Lvl % Rec Batch Method Analyzed By% Rec Limits NotesDF
4-Bromofluorobenzene 51-122104 %jkgEPA 8260B 12/01/11 08:191K300315250.0 1
Dibromofluoromethane 68-117100 %jkgEPA 8260B 12/01/11 08:191K300315050.0 1
Toluene-d8 67-127103 %jkgEPA 8260B 12/01/11 08:191K300315150.0 1
Page 23 of 45
www.encolabs.com
3201-MW10Description:Lab Sample ID:C113671-06 11/29/11 12:15Received:
Matrix:Ground Water Sampled:11/28/11 12:35 Work Order:C113671
City of DurhamProject:Sampled By:N. Rathjen/ K. Sizemore
Metals (total recoverable) by EPA 6000/7000 Series Methods
^ - ENCO Cary certified analyte [NC 591]
Analyte [CAS Number]DFUnitsResults MDL Method Analyzed ByMRLFlag NotesNC SWSL
ug/L EPA 6020A 12/06/11 14:41Antimony [7440-36-0] ^1 0.220 VLO2.000.220 U 6
ug/L EPA 6010C 12/05/11 11:23Arsenic [7440-38-2] ^1 2.80 JDH10.02.80 U 10
ug/L EPA 6010C 12/05/11 11:23Barium [7440-39-3] ^1 1.00 JDH10.0268 100
ug/L EPA 6010C 12/05/11 11:23Beryllium [7440-41-7] ^1 0.100 JDH1.000.100 U 1
ug/L EPA 6010C 12/05/11 11:23Cadmium [7440-43-9] ^1 0.360 JDH1.000.360 U 1
ug/L EPA 6010C 12/05/11 11:23Chromium [7440-47-3] ^1 1.00 JDH10.01.00 U 10
ug/L EPA 6010C 12/05/11 11:23Cobalt [7440-48-4] ^1 1.10 JDH10.05.64 J 10
ug/L EPA 6010C 12/05/11 11:23Copper [7440-50-8] ^1 1.60 JDH10.01.79 J 10
ug/L EPA 6010C 12/05/11 11:23Lead [7439-92-1] ^1 1.90 JDH10.01.90 U 10
ug/L EPA 6010C 12/05/11 11:23Nickel [7440-02-0] ^1 1.80 JDH10.05.47 J 50
ug/L EPA 6010C 12/05/11 11:23Selenium [7782-49-2] ^1 2.70 JDH10.02.70 U 10
ug/L EPA 6010C 12/05/11 11:23Silver [7440-22-4] ^1 1.90 JDH10.07.19 J 10
ug/L EPA 6020A 12/06/11 14:41Thallium [7440-28-0] ^1 0.110 VLO1.000.110 U 5.5
ug/L EPA 6010C 12/05/11 11:23Vanadium [7440-62-2] ^1 1.40 JDH10.01.40 U 25
ug/L EPA 6010C 12/05/11 11:23Zinc [7440-66-6] ^1 3.80 JDH10.026.6 10
This report relates only to the sample as received by the laboratory, and may only be reproduced in full.
Page 24 of 45
www.encolabs.com
3201-S2Description:Lab Sample ID:C113671-07 11/29/11 12:15Received:
Matrix:Surface Water Sampled:11/28/11 12:45 Work Order:C113671
City of DurhamProject:Sampled By:N. Rathjen/ K. Sizemore
Volatile Organic Compounds by GCMS
^ - ENCO Cary certified analyte [NC 591]
Analyte [CAS Number]DFUnitsResults MDL Method Analyzed ByMRLFlag NotesNC SWSL
ug/L EPA 8260B 12/01/11 08:481,1,1,2-Tetrachloroethane [630-20-6] ^1 0.90 jkg1.00.90 U 5
ug/L EPA 8260B 12/01/11 08:481,1,1-Trichloroethane [71-55-6] ^1 0.65 jkg1.00.65 U 1
ug/L EPA 8260B 12/01/11 08:481,1,2,2-Tetrachloroethane [79-34-5] ^1 0.75 jkg1.00.75 U 3
ug/L EPA 8260B 12/01/11 08:481,1,2-Trichloroethane [79-00-5] ^1 0.66 jkg1.00.66 U 1
ug/L EPA 8260B 12/01/11 08:481,1-Dichloroethane [75-34-3] ^1 0.080 jkg1.00.080 U 5
ug/L EPA 8260B 12/01/11 08:481,1-Dichloroethene [75-35-4] ^1 0.60 jkg1.00.60 U 5
ug/L EPA 8260B 12/01/11 08:481,2,3-Trichloropropane [96-18-4] ^1 0.72 jkg1.00.72 U 1
ug/L EPA 8260B 12/01/11 08:481,2-Dibromo-3-chloropropane [96-12-8] ^1 0.48 jkg1.00.48 U 13
ug/L EPA 8260B 12/01/11 08:481,2-Dibromoethane [106-93-4] ^1 0.66 jkg1.00.66 U 1
ug/L EPA 8260B 12/01/11 08:481,2-Dichlorobenzene [95-50-1] ^1 0.11 jkg1.00.11 U 5
ug/L EPA 8260B 12/01/11 08:481,2-Dichloroethane [107-06-2] ^1 0.47 jkg1.00.47 U 1
ug/L EPA 8260B 12/01/11 08:481,2-Dichloropropane [78-87-5] ^1 0.59 jkg1.00.59 U 1
ug/L EPA 8260B 12/01/11 08:481,4-Dichlorobenzene [106-46-7] ^1 0.79 jkg1.00.79 U 1
ug/L EPA 8260B 12/01/11 08:482-Butanone [78-93-3] ^1 1.3 jkg5.01.3 U 100
ug/L EPA 8260B 12/01/11 08:482-Hexanone [591-78-6] ^1 0.88 jkg5.00.88 U 50
ug/L EPA 8260B 12/01/11 08:484-Methyl-2-pentanone [108-10-1] ^1 1.1 jkg5.01.1 U 100
ug/L EPA 8260B 12/01/11 08:48Acetone [67-64-1] ^1 1.2 jkg5.01.2 U 100
ug/L EPA 8260B 12/01/11 08:48Acrylonitrile [107-13-1] ^1 3.5 jkg103.5 U 200
ug/L EPA 8260B 12/01/11 08:48Benzene [71-43-2] ^1 0.68 jkg1.00.68 U 1
ug/L EPA 8260B 12/01/11 08:48Bromochloromethane [74-97-5] ^1 0.87 jkg1.00.87 U 3
ug/L EPA 8260B 12/01/11 08:48Bromodichloromethane [75-27-4] ^1 0.75 jkg1.00.75 U 1
ug/L EPA 8260B 12/01/11 08:48Bromoform [75-25-2] ^1 0.68 jkg1.00.68 U 3
ug/L EPA 8260B 12/01/11 08:48Bromomethane [74-83-9] ^1 0.58 jkg1.00.58 U 10
ug/L EPA 8260B 12/01/11 08:48Carbon disulfide [75-15-0] ^1 1.5 jkg5.01.5 U 100
ug/L EPA 8260B 12/01/11 08:48Carbon tetrachloride [56-23-5] ^1 0.69 jkg1.00.69 U 1
ug/L EPA 8260B 12/01/11 08:48Chlorobenzene [108-90-7] ^1 0.74 jkg1.00.74 U 3
ug/L EPA 8260B 12/01/11 08:48Chloroethane [75-00-3] ^1 0.75 jkg1.00.75 U 10
ug/L EPA 8260B 12/01/11 08:48Chloroform [67-66-3] ^1 0.70 jkg1.00.70 U 5
ug/L EPA 8260B 12/01/11 08:48Chloromethane [74-87-3] ^1 0.55 jkg1.00.55 U 1
ug/L EPA 8260B 12/01/11 08:48cis-1,2-Dichloroethene [156-59-2] ^1 0.72 jkg1.00.72 U 5
ug/L EPA 8260B 12/01/11 08:48cis-1,3-Dichloropropene [10061-01-5] ^1 0.075 jkg1.00.075 U 1
ug/L EPA 8260B 12/01/11 08:48Dibromochloromethane [124-48-1] ^1 0.63 jkg1.00.63 U 3
ug/L EPA 8260B 12/01/11 08:48Dibromomethane [74-95-3] ^1 0.90 jkg1.00.90 U 10
ug/L EPA 8260B 12/01/11 08:48Ethylbenzene [100-41-4] ^1 0.62 jkg1.00.62 U 1
ug/L EPA 8260B 12/01/11 08:48Iodomethane [74-88-4] ^1 1.7 jkg5.01.7 U 10
ug/L EPA 8260B 12/01/11 08:48Methylene chloride [75-09-2] ^1 0.14 jkg1.00.14 U 1
ug/L EPA 8260B 12/01/11 08:48Styrene [100-42-5] ^1 0.053 jkg1.00.053 U 1
ug/L EPA 8260B 12/01/11 08:48Tetrachloroethene [127-18-4] ^1 0.73 jkg1.00.73 U 1
ug/L EPA 8260B 12/01/11 08:48Toluene [108-88-3] ^1 0.85 jkg1.00.85 U 1
ug/L EPA 8260B 12/01/11 08:48trans-1,2-Dichloroethene [156-60-5] ^1 0.12 jkg1.00.12 U 5
ug/L EPA 8260B 12/01/11 08:48trans-1,3-Dichloropropene [10061-02-6] ^1 0.50 jkg1.00.50 U 1
ug/L EPA 8260B 12/01/11 08:48trans-1,4-Dichloro-2-butene [110-57-6] ^1 0.70 jkg1.00.70 U 100
ug/L EPA 8260B 12/01/11 08:48Trichloroethene [79-01-6] ^1 0.72 jkg1.00.72 U 1
ug/L EPA 8260B 12/01/11 08:48Trichlorofluoromethane [75-69-4] ^1 0.66 jkg1.00.66 U 1
ug/L EPA 8260B 12/01/11 08:48Vinyl acetate [108-05-4] ^1 0.95 jkg5.00.95 U 50
ug/L EPA 8260B 12/01/11 08:48Vinyl chloride [75-01-4] ^1 0.60 jkg1.00.60 U 1
Page 25 of 45
www.encolabs.com
3201-S2Description:Lab Sample ID:C113671-07 11/29/11 12:15Received:
Matrix:Surface Water Sampled:11/28/11 12:45 Work Order:C113671
City of DurhamProject:Sampled By:N. Rathjen/ K. Sizemore
Volatile Organic Compounds by GCMS
^ - ENCO Cary certified analyte [NC 591]
Analyte [CAS Number]DFUnitsResults MDL Method Analyzed ByMRLFlag NotesNC SWSL
ug/L EPA 8260B 12/01/11 08:48Xylenes (Total) [1330-20-7] ^1 2.1 jkg3.02.1 U 5
Surrogates Results Spike Lvl % Rec Batch Method Analyzed By% Rec Limits NotesDF
4-Bromofluorobenzene 51-122103 %jkgEPA 8260B 12/01/11 08:481K300315150.0 1
Dibromofluoromethane 68-117100 %jkgEPA 8260B 12/01/11 08:481K300315050.0 1
Toluene-d8 67-127102 %jkgEPA 8260B 12/01/11 08:481K300315150.0 1
Page 26 of 45
www.encolabs.com
3201-S2Description:Lab Sample ID:C113671-07 11/29/11 12:15Received:
Matrix:Surface Water Sampled:11/28/11 12:45 Work Order:C113671
City of DurhamProject:Sampled By:N. Rathjen/ K. Sizemore
Metals (total recoverable) by EPA 6000/7000 Series Methods
^ - ENCO Cary certified analyte [NC 591]
Analyte [CAS Number]DFUnitsResults MDL Method Analyzed ByMRLFlag NotesNC SWSL
ug/L EPA 6020A 12/06/11 14:43Antimony [7440-36-0] ^1 0.220 VLO2.000.220 U 6
ug/L EPA 6010C 12/05/11 11:25Arsenic [7440-38-2] ^1 2.80 JDH10.04.77 J 10
ug/L EPA 6010C 12/05/11 11:25Barium [7440-39-3] ^1 1.00 JDH10.072.7 J 100
ug/L EPA 6010C 12/05/11 11:25Beryllium [7440-41-7] ^1 0.100 JDH1.000.100 U 1
ug/L EPA 6010C 12/05/11 11:25Cadmium [7440-43-9] ^1 0.360 JDH1.000.360 U 1
ug/L EPA 6010C 12/05/11 11:25Chromium [7440-47-3] ^1 1.00 JDH10.01.00 U 10
ug/L EPA 6010C 12/05/11 11:25Cobalt [7440-48-4] ^1 1.10 JDH10.01.10 U 10
ug/L EPA 6010C 12/05/11 11:25Copper [7440-50-8] ^1 1.60 JDH10.02.89 J 10
ug/L EPA 6010C 12/05/11 11:25Lead [7439-92-1] ^1 1.90 JDH10.01.90 U 10
ug/L EPA 6010C 12/05/11 11:25Nickel [7440-02-0] ^1 1.80 JDH10.03.11 J 50
ug/L EPA 6010C 12/05/11 11:25Selenium [7782-49-2] ^1 2.70 JDH10.02.70 U 10
ug/L EPA 6010C 12/05/11 11:25Silver [7440-22-4] ^1 1.90 JDH10.01.90 U 10
ug/L EPA 6020A 12/06/11 14:43Thallium [7440-28-0] ^1 0.110 VLO1.000.110 U 5.5
ug/L EPA 6010C 12/05/11 11:25Vanadium [7440-62-2] ^1 1.40 JDH10.01.40 U 25
ug/L EPA 6010C 12/05/11 11:25Zinc [7440-66-6] ^1 3.80 JDH10.05.77 J 10
This report relates only to the sample as received by the laboratory, and may only be reproduced in full.
Page 27 of 45
www.encolabs.com
3201-S3Description:Lab Sample ID:C113671-08 11/29/11 12:15Received:
Matrix:Surface Water Sampled:11/28/11 13:31 Work Order:C113671
City of DurhamProject:Sampled By:N. Rathjen/ K. Sizemore
Volatile Organic Compounds by GCMS
^ - ENCO Cary certified analyte [NC 591]
Analyte [CAS Number]DFUnitsResults MDL Method Analyzed ByMRLFlag NotesNC SWSL
ug/L EPA 8260B 12/01/11 09:181,1,1,2-Tetrachloroethane [630-20-6] ^1 0.90 jkg1.00.90 U 5
ug/L EPA 8260B 12/01/11 09:181,1,1-Trichloroethane [71-55-6] ^1 0.65 jkg1.00.65 U 1
ug/L EPA 8260B 12/01/11 09:181,1,2,2-Tetrachloroethane [79-34-5] ^1 0.75 jkg1.00.75 U 3
ug/L EPA 8260B 12/01/11 09:181,1,2-Trichloroethane [79-00-5] ^1 0.66 jkg1.00.66 U 1
ug/L EPA 8260B 12/01/11 09:181,1-Dichloroethane [75-34-3] ^1 0.080 jkg1.00.080 U 5
ug/L EPA 8260B 12/01/11 09:181,1-Dichloroethene [75-35-4] ^1 0.60 jkg1.00.60 U 5
ug/L EPA 8260B 12/01/11 09:181,2,3-Trichloropropane [96-18-4] ^1 0.72 jkg1.00.72 U 1
ug/L EPA 8260B 12/01/11 09:181,2-Dibromo-3-chloropropane [96-12-8] ^1 0.48 jkg1.00.48 U 13
ug/L EPA 8260B 12/01/11 09:181,2-Dibromoethane [106-93-4] ^1 0.66 jkg1.00.66 U 1
ug/L EPA 8260B 12/01/11 09:181,2-Dichlorobenzene [95-50-1] ^1 0.11 jkg1.00.11 U 5
ug/L EPA 8260B 12/01/11 09:181,2-Dichloroethane [107-06-2] ^1 0.47 jkg1.00.47 U 1
ug/L EPA 8260B 12/01/11 09:181,2-Dichloropropane [78-87-5] ^1 0.59 jkg1.00.59 U 1
ug/L EPA 8260B 12/01/11 09:181,4-Dichlorobenzene [106-46-7] ^1 0.79 jkg1.00.79 U 1
ug/L EPA 8260B 12/01/11 09:182-Butanone [78-93-3] ^1 1.3 jkg5.01.3 U 100
ug/L EPA 8260B 12/01/11 09:182-Hexanone [591-78-6] ^1 0.88 jkg5.00.88 U 50
ug/L EPA 8260B 12/01/11 09:184-Methyl-2-pentanone [108-10-1] ^1 1.1 jkg5.01.1 U 100
ug/L EPA 8260B 12/01/11 09:18Acetone [67-64-1] ^1 1.2 jkg5.01.2 U 100
ug/L EPA 8260B 12/01/11 09:18Acrylonitrile [107-13-1] ^1 3.5 jkg103.5 U 200
ug/L EPA 8260B 12/01/11 09:18Benzene [71-43-2] ^1 0.68 jkg1.00.68 U 1
ug/L EPA 8260B 12/01/11 09:18Bromochloromethane [74-97-5] ^1 0.87 jkg1.00.87 U 3
ug/L EPA 8260B 12/01/11 09:18Bromodichloromethane [75-27-4] ^1 0.75 jkg1.00.75 U 1
ug/L EPA 8260B 12/01/11 09:18Bromoform [75-25-2] ^1 0.68 jkg1.00.68 U 3
ug/L EPA 8260B 12/01/11 09:18Bromomethane [74-83-9] ^1 0.58 jkg1.00.58 U 10
ug/L EPA 8260B 12/01/11 09:18Carbon disulfide [75-15-0] ^1 1.5 jkg5.01.5 U 100
ug/L EPA 8260B 12/01/11 09:18Carbon tetrachloride [56-23-5] ^1 0.69 jkg1.00.69 U 1
ug/L EPA 8260B 12/01/11 09:18Chlorobenzene [108-90-7] ^1 0.74 jkg1.00.74 U 3
ug/L EPA 8260B 12/01/11 09:18Chloroethane [75-00-3] ^1 0.75 jkg1.00.75 U 10
ug/L EPA 8260B 12/01/11 09:18Chloroform [67-66-3] ^1 0.70 jkg1.00.70 U 5
ug/L EPA 8260B 12/01/11 09:18Chloromethane [74-87-3] ^1 0.55 jkg1.00.55 U 1
ug/L EPA 8260B 12/01/11 09:18cis-1,2-Dichloroethene [156-59-2] ^1 0.72 jkg1.00.72 U 5
ug/L EPA 8260B 12/01/11 09:18cis-1,3-Dichloropropene [10061-01-5] ^1 0.075 jkg1.00.075 U 1
ug/L EPA 8260B 12/01/11 09:18Dibromochloromethane [124-48-1] ^1 0.63 jkg1.00.63 U 3
ug/L EPA 8260B 12/01/11 09:18Dibromomethane [74-95-3] ^1 0.90 jkg1.00.90 U 10
ug/L EPA 8260B 12/01/11 09:18Ethylbenzene [100-41-4] ^1 0.62 jkg1.00.62 U 1
ug/L EPA 8260B 12/01/11 09:18Iodomethane [74-88-4] ^1 1.7 jkg5.01.7 U 10
ug/L EPA 8260B 12/01/11 09:18Methylene chloride [75-09-2] ^1 0.14 jkg1.00.14 U 1
ug/L EPA 8260B 12/01/11 09:18Styrene [100-42-5] ^1 0.053 jkg1.00.053 U 1
ug/L EPA 8260B 12/01/11 09:18Tetrachloroethene [127-18-4] ^1 0.73 jkg1.00.73 U 1
ug/L EPA 8260B 12/01/11 09:18Toluene [108-88-3] ^1 0.85 jkg1.00.85 U 1
ug/L EPA 8260B 12/01/11 09:18trans-1,2-Dichloroethene [156-60-5] ^1 0.12 jkg1.00.12 U 5
ug/L EPA 8260B 12/01/11 09:18trans-1,3-Dichloropropene [10061-02-6] ^1 0.50 jkg1.00.50 U 1
ug/L EPA 8260B 12/01/11 09:18trans-1,4-Dichloro-2-butene [110-57-6] ^1 0.70 jkg1.00.70 U 100
ug/L EPA 8260B 12/01/11 09:18Trichloroethene [79-01-6] ^1 0.72 jkg1.00.72 U 1
ug/L EPA 8260B 12/01/11 09:18Trichlorofluoromethane [75-69-4] ^1 0.66 jkg1.00.66 U 1
ug/L EPA 8260B 12/01/11 09:18Vinyl acetate [108-05-4] ^1 0.95 jkg5.00.95 U 50
ug/L EPA 8260B 12/01/11 09:18Vinyl chloride [75-01-4] ^1 0.60 jkg1.00.60 U 1
Page 28 of 45
www.encolabs.com
3201-S3Description:Lab Sample ID:C113671-08 11/29/11 12:15Received:
Matrix:Surface Water Sampled:11/28/11 13:31 Work Order:C113671
City of DurhamProject:Sampled By:N. Rathjen/ K. Sizemore
Volatile Organic Compounds by GCMS
^ - ENCO Cary certified analyte [NC 591]
Analyte [CAS Number]DFUnitsResults MDL Method Analyzed ByMRLFlag NotesNC SWSL
ug/L EPA 8260B 12/01/11 09:18Xylenes (Total) [1330-20-7] ^1 2.1 jkg3.02.1 U 5
Surrogates Results Spike Lvl % Rec Batch Method Analyzed By% Rec Limits NotesDF
4-Bromofluorobenzene 51-122103 %jkgEPA 8260B 12/01/11 09:181K300315150.0 1
Dibromofluoromethane 68-117100 %jkgEPA 8260B 12/01/11 09:181K300315050.0 1
Toluene-d8 67-127102 %jkgEPA 8260B 12/01/11 09:181K300315150.0 1
Page 29 of 45
www.encolabs.com
3201-S3Description:Lab Sample ID:C113671-08 11/29/11 12:15Received:
Matrix:Surface Water Sampled:11/28/11 13:31 Work Order:C113671
City of DurhamProject:Sampled By:N. Rathjen/ K. Sizemore
Metals (total recoverable) by EPA 6000/7000 Series Methods
^ - ENCO Cary certified analyte [NC 591]
Analyte [CAS Number]DFUnitsResults MDL Method Analyzed ByMRLFlag NotesNC SWSL
ug/L EPA 6020A 12/06/11 14:44Antimony [7440-36-0] ^1 0.220 VLO2.000.220 U 6
ug/L EPA 6010C 12/05/11 11:27Arsenic [7440-38-2] ^1 2.80 JDH10.02.80 U 10
ug/L EPA 6010C 12/05/11 11:27Barium [7440-39-3] ^1 1.00 JDH10.08.82 J 100
ug/L EPA 6010C 12/05/11 11:27Beryllium [7440-41-7] ^1 0.100 JDH1.000.100 U 1
ug/L EPA 6010C 12/05/11 11:27Cadmium [7440-43-9] ^1 0.360 JDH1.000.360 U 1
ug/L EPA 6010C 12/05/11 11:27Chromium [7440-47-3] ^1 1.00 JDH10.01.00 U 10
ug/L EPA 6010C 12/05/11 11:27Cobalt [7440-48-4] ^1 1.10 JDH10.01.10 U 10
ug/L EPA 6010C 12/05/11 11:27Copper [7440-50-8] ^1 1.60 JDH10.02.19 J 10
ug/L EPA 6010C 12/05/11 11:27Lead [7439-92-1] ^1 1.90 JDH10.01.90 U 10
ug/L EPA 6010C 12/05/11 11:27Nickel [7440-02-0] ^1 1.80 JDH10.01.90 J 50
ug/L EPA 6010C 12/05/11 11:27Selenium [7782-49-2] ^1 2.70 JDH10.02.70 U 10
ug/L EPA 6010C 12/05/11 11:27Silver [7440-22-4] ^1 1.90 JDH10.01.90 U 10
ug/L EPA 6020A 12/06/11 14:44Thallium [7440-28-0] ^1 0.110 VLO1.000.110 U 5.5
ug/L EPA 6010C 12/05/11 11:27Vanadium [7440-62-2] ^1 1.40 JDH10.01.40 U 25
ug/L EPA 6010C 12/05/11 11:27Zinc [7440-66-6] ^1 3.80 JDH10.036.6 10
This report relates only to the sample as received by the laboratory, and may only be reproduced in full.
Page 30 of 45
www.encolabs.com
3201-S4Description:Lab Sample ID:C113671-09 11/29/11 12:15Received:
Matrix:Surface Water Sampled:11/28/11 11:52 Work Order:C113671
City of DurhamProject:Sampled By:N. Rathjen/ K. Sizemore
Volatile Organic Compounds by GCMS
^ - ENCO Cary certified analyte [NC 591]
Analyte [CAS Number]DFUnitsResults MDL Method Analyzed ByMRLFlag NotesNC SWSL
ug/L EPA 8260B 12/01/11 09:471,1,1,2-Tetrachloroethane [630-20-6] ^1 0.90 jkg1.00.90 U 5
ug/L EPA 8260B 12/01/11 09:471,1,1-Trichloroethane [71-55-6] ^1 0.65 jkg1.00.65 U 1
ug/L EPA 8260B 12/01/11 09:471,1,2,2-Tetrachloroethane [79-34-5] ^1 0.75 jkg1.00.75 U 3
ug/L EPA 8260B 12/01/11 09:471,1,2-Trichloroethane [79-00-5] ^1 0.66 jkg1.00.66 U 1
ug/L EPA 8260B 12/01/11 09:471,1-Dichloroethane [75-34-3] ^1 0.080 jkg1.00.080 U 5
ug/L EPA 8260B 12/01/11 09:471,1-Dichloroethene [75-35-4] ^1 0.60 jkg1.00.60 U 5
ug/L EPA 8260B 12/01/11 09:471,2,3-Trichloropropane [96-18-4] ^1 0.72 jkg1.00.72 U 1
ug/L EPA 8260B 12/01/11 09:471,2-Dibromo-3-chloropropane [96-12-8] ^1 0.48 jkg1.00.48 U 13
ug/L EPA 8260B 12/01/11 09:471,2-Dibromoethane [106-93-4] ^1 0.66 jkg1.00.66 U 1
ug/L EPA 8260B 12/01/11 09:471,2-Dichlorobenzene [95-50-1] ^1 0.11 jkg1.00.11 U 5
ug/L EPA 8260B 12/01/11 09:471,2-Dichloroethane [107-06-2] ^1 0.47 jkg1.00.47 U 1
ug/L EPA 8260B 12/01/11 09:471,2-Dichloropropane [78-87-5] ^1 0.59 jkg1.00.59 U 1
ug/L EPA 8260B 12/01/11 09:471,4-Dichlorobenzene [106-46-7] ^1 0.79 jkg1.00.79 U 1
ug/L EPA 8260B 12/01/11 09:472-Butanone [78-93-3] ^1 1.3 jkg5.01.3 U 100
ug/L EPA 8260B 12/01/11 09:472-Hexanone [591-78-6] ^1 0.88 jkg5.00.88 U 50
ug/L EPA 8260B 12/01/11 09:474-Methyl-2-pentanone [108-10-1] ^1 1.1 jkg5.01.1 U 100
ug/L EPA 8260B 12/01/11 09:47Acetone [67-64-1] ^1 1.2 jkg5.01.2 U 100
ug/L EPA 8260B 12/01/11 09:47Acrylonitrile [107-13-1] ^1 3.5 jkg103.5 U 200
ug/L EPA 8260B 12/01/11 09:47Benzene [71-43-2] ^1 0.68 jkg1.00.68 U 1
ug/L EPA 8260B 12/01/11 09:47Bromochloromethane [74-97-5] ^1 0.87 jkg1.00.87 U 3
ug/L EPA 8260B 12/01/11 09:47Bromodichloromethane [75-27-4] ^1 0.75 jkg1.00.75 U 1
ug/L EPA 8260B 12/01/11 09:47Bromoform [75-25-2] ^1 0.68 jkg1.00.68 U 3
ug/L EPA 8260B 12/01/11 09:47Bromomethane [74-83-9] ^1 0.58 jkg1.00.58 U 10
ug/L EPA 8260B 12/01/11 09:47Carbon disulfide [75-15-0] ^1 1.5 jkg5.01.5 U 100
ug/L EPA 8260B 12/01/11 09:47Carbon tetrachloride [56-23-5] ^1 0.69 jkg1.00.69 U 1
ug/L EPA 8260B 12/01/11 09:47Chlorobenzene [108-90-7] ^1 0.74 jkg1.00.74 U 3
ug/L EPA 8260B 12/01/11 09:47Chloroethane [75-00-3] ^1 0.75 jkg1.00.75 U 10
ug/L EPA 8260B 12/01/11 09:47Chloroform [67-66-3] ^1 0.70 jkg1.00.70 U 5
ug/L EPA 8260B 12/01/11 09:47Chloromethane [74-87-3] ^1 0.55 jkg1.00.55 U 1
ug/L EPA 8260B 12/01/11 09:47cis-1,2-Dichloroethene [156-59-2] ^1 0.72 jkg1.00.72 U 5
ug/L EPA 8260B 12/01/11 09:47cis-1,3-Dichloropropene [10061-01-5] ^1 0.075 jkg1.00.075 U 1
ug/L EPA 8260B 12/01/11 09:47Dibromochloromethane [124-48-1] ^1 0.63 jkg1.00.63 U 3
ug/L EPA 8260B 12/01/11 09:47Dibromomethane [74-95-3] ^1 0.90 jkg1.00.90 U 10
ug/L EPA 8260B 12/01/11 09:47Ethylbenzene [100-41-4] ^1 0.62 jkg1.00.62 U 1
ug/L EPA 8260B 12/01/11 09:47Iodomethane [74-88-4] ^1 1.7 jkg5.01.7 U 10
ug/L EPA 8260B 12/01/11 09:47Methylene chloride [75-09-2] ^1 0.14 jkg1.00.14 U 1
ug/L EPA 8260B 12/01/11 09:47Styrene [100-42-5] ^1 0.053 jkg1.00.053 U 1
ug/L EPA 8260B 12/01/11 09:47Tetrachloroethene [127-18-4] ^1 0.73 jkg1.00.73 U 1
ug/L EPA 8260B 12/01/11 09:47Toluene [108-88-3] ^1 0.85 jkg1.00.85 U 1
ug/L EPA 8260B 12/01/11 09:47trans-1,2-Dichloroethene [156-60-5] ^1 0.12 jkg1.00.12 U 5
ug/L EPA 8260B 12/01/11 09:47trans-1,3-Dichloropropene [10061-02-6] ^1 0.50 jkg1.00.50 U 1
ug/L EPA 8260B 12/01/11 09:47trans-1,4-Dichloro-2-butene [110-57-6] ^1 0.70 jkg1.00.70 U 100
ug/L EPA 8260B 12/01/11 09:47Trichloroethene [79-01-6] ^1 0.72 jkg1.00.72 U 1
ug/L EPA 8260B 12/01/11 09:47Trichlorofluoromethane [75-69-4] ^1 0.66 jkg1.00.66 U 1
ug/L EPA 8260B 12/01/11 09:47Vinyl acetate [108-05-4] ^1 0.95 jkg5.00.95 U 50
ug/L EPA 8260B 12/01/11 09:47Vinyl chloride [75-01-4] ^1 0.60 jkg1.00.60 U 1
Page 31 of 45
www.encolabs.com
3201-S4Description:Lab Sample ID:C113671-09 11/29/11 12:15Received:
Matrix:Surface Water Sampled:11/28/11 11:52 Work Order:C113671
City of DurhamProject:Sampled By:N. Rathjen/ K. Sizemore
Volatile Organic Compounds by GCMS
^ - ENCO Cary certified analyte [NC 591]
Analyte [CAS Number]DFUnitsResults MDL Method Analyzed ByMRLFlag NotesNC SWSL
ug/L EPA 8260B 12/01/11 09:47Xylenes (Total) [1330-20-7] ^1 2.1 jkg3.02.1 U 5
Surrogates Results Spike Lvl % Rec Batch Method Analyzed By% Rec Limits NotesDF
4-Bromofluorobenzene 51-122103 %jkgEPA 8260B 12/01/11 09:471K300315250.0 1
Dibromofluoromethane 68-117102 %jkgEPA 8260B 12/01/11 09:471K300315150.0 1
Toluene-d8 67-127103 %jkgEPA 8260B 12/01/11 09:471K300315150.0 1
Page 32 of 45
www.encolabs.com
3201-S4Description:Lab Sample ID:C113671-09 11/29/11 12:15Received:
Matrix:Surface Water Sampled:11/28/11 11:52 Work Order:C113671
City of DurhamProject:Sampled By:N. Rathjen/ K. Sizemore
Metals (total recoverable) by EPA 6000/7000 Series Methods
^ - ENCO Cary certified analyte [NC 591]
Analyte [CAS Number]DFUnitsResults MDL Method Analyzed ByMRLFlag NotesNC SWSL
ug/L EPA 6020A 12/06/11 14:46Antimony [7440-36-0] ^1 0.220 VLO2.000.220 U 6
ug/L EPA 6010C 12/05/11 11:29Arsenic [7440-38-2] ^1 2.80 JDH10.02.80 U 10
ug/L EPA 6010C 12/05/11 11:29Barium [7440-39-3] ^1 1.00 JDH10.063.3 J 100
ug/L EPA 6010C 12/05/11 11:29Beryllium [7440-41-7] ^1 0.100 JDH1.000.100 U 1
ug/L EPA 6010C 12/05/11 11:29Cadmium [7440-43-9] ^1 0.360 JDH1.000.360 U 1
ug/L EPA 6010C 12/05/11 11:29Chromium [7440-47-3] ^1 1.00 JDH10.01.00 U 10
ug/L EPA 6010C 12/05/11 11:29Cobalt [7440-48-4] ^1 1.10 JDH10.01.10 U 10
ug/L EPA 6010C 12/05/11 11:29Copper [7440-50-8] ^1 1.60 JDH10.03.71 J 10
ug/L EPA 6010C 12/05/11 11:29Lead [7439-92-1] ^1 1.90 JDH10.01.90 U 10
ug/L EPA 6010C 12/05/11 11:29Nickel [7440-02-0] ^1 1.80 JDH10.03.30 J 50
ug/L EPA 6010C 12/05/11 11:29Selenium [7782-49-2] ^1 2.70 JDH10.02.70 U 10
ug/L EPA 6010C 12/05/11 11:29Silver [7440-22-4] ^1 1.90 JDH10.01.90 U 10
ug/L EPA 6020A 12/06/11 14:46Thallium [7440-28-0] ^1 0.110 VLO1.000.110 U 5.5
ug/L EPA 6010C 12/05/11 11:29Vanadium [7440-62-2] ^1 1.40 JDH10.01.40 U 25
ug/L EPA 6010C 12/05/11 11:29Zinc [7440-66-6] ^1 3.80 JDH10.07.24 J 10
This report relates only to the sample as received by the laboratory, and may only be reproduced in full.
Page 33 of 45
www.encolabs.com
3201-Field BlankDescription:Lab Sample ID:C113671-10 11/29/11 12:15Received:
Matrix:Water Sampled:11/28/11 15:20 Work Order:C113671
City of DurhamProject:Sampled By:N. Rathjen/ K. Sizemore
Volatile Organic Compounds by GCMS
^ - ENCO Cary certified analyte [NC 591]
Analyte [CAS Number]DFUnitsResults MDL Method Analyzed ByMRLFlag NotesNC SWSL
ug/L EPA 8260B 12/01/11 10:161,1,1,2-Tetrachloroethane [630-20-6] ^1 0.90 jkg1.00.90 U 5
ug/L EPA 8260B 12/01/11 10:161,1,1-Trichloroethane [71-55-6] ^1 0.65 jkg1.00.65 U 1
ug/L EPA 8260B 12/01/11 10:161,1,2,2-Tetrachloroethane [79-34-5] ^1 0.75 jkg1.00.75 U 3
ug/L EPA 8260B 12/01/11 10:161,1,2-Trichloroethane [79-00-5] ^1 0.66 jkg1.00.66 U 1
ug/L EPA 8260B 12/01/11 10:161,1-Dichloroethane [75-34-3] ^1 0.080 jkg1.00.080 U 5
ug/L EPA 8260B 12/01/11 10:161,1-Dichloroethene [75-35-4] ^1 0.60 jkg1.00.60 U 5
ug/L EPA 8260B 12/01/11 10:161,2,3-Trichloropropane [96-18-4] ^1 0.72 jkg1.00.72 U 1
ug/L EPA 8260B 12/01/11 10:161,2-Dibromo-3-chloropropane [96-12-8] ^1 0.48 jkg1.00.48 U 13
ug/L EPA 8260B 12/01/11 10:161,2-Dibromoethane [106-93-4] ^1 0.66 jkg1.00.66 U 1
ug/L EPA 8260B 12/01/11 10:161,2-Dichlorobenzene [95-50-1] ^1 0.11 jkg1.00.11 U 5
ug/L EPA 8260B 12/01/11 10:161,2-Dichloroethane [107-06-2] ^1 0.47 jkg1.00.47 U 1
ug/L EPA 8260B 12/01/11 10:161,2-Dichloropropane [78-87-5] ^1 0.59 jkg1.00.59 U 1
ug/L EPA 8260B 12/01/11 10:161,4-Dichlorobenzene [106-46-7] ^1 0.79 jkg1.00.79 U 1
ug/L EPA 8260B 12/01/11 10:162-Butanone [78-93-3] ^1 1.3 jkg5.01.3 U 100
ug/L EPA 8260B 12/01/11 10:162-Hexanone [591-78-6] ^1 0.88 jkg5.00.88 U 50
ug/L EPA 8260B 12/01/11 10:164-Methyl-2-pentanone [108-10-1] ^1 1.1 jkg5.01.1 U 100
ug/L EPA 8260B 12/01/11 10:16Acetone [67-64-1] ^1 1.2 jkg5.01.2 U 100
ug/L EPA 8260B 12/01/11 10:16Acrylonitrile [107-13-1] ^1 3.5 jkg103.5 U 200
ug/L EPA 8260B 12/01/11 10:16Benzene [71-43-2] ^1 0.68 jkg1.00.68 U 1
ug/L EPA 8260B 12/01/11 10:16Bromochloromethane [74-97-5] ^1 0.87 jkg1.00.87 U 3
ug/L EPA 8260B 12/01/11 10:16Bromodichloromethane [75-27-4] ^1 0.75 jkg1.00.75 U 1
ug/L EPA 8260B 12/01/11 10:16Bromoform [75-25-2] ^1 0.68 jkg1.00.68 U 3
ug/L EPA 8260B 12/01/11 10:16Bromomethane [74-83-9] ^1 0.58 jkg1.00.58 U 10
ug/L EPA 8260B 12/01/11 10:16Carbon disulfide [75-15-0] ^1 1.5 jkg5.01.5 U 100
ug/L EPA 8260B 12/01/11 10:16Carbon tetrachloride [56-23-5] ^1 0.69 jkg1.00.69 U 1
ug/L EPA 8260B 12/01/11 10:16Chlorobenzene [108-90-7] ^1 0.74 jkg1.00.74 U 3
ug/L EPA 8260B 12/01/11 10:16Chloroethane [75-00-3] ^1 0.75 jkg1.00.75 U 10
ug/L EPA 8260B 12/01/11 10:16Chloroform [67-66-3] ^1 0.70 jkg1.00.70 U 5
ug/L EPA 8260B 12/01/11 10:16Chloromethane [74-87-3] ^1 0.55 jkg1.00.55 U 1
ug/L EPA 8260B 12/01/11 10:16cis-1,2-Dichloroethene [156-59-2] ^1 0.72 jkg1.00.72 U 5
ug/L EPA 8260B 12/01/11 10:16cis-1,3-Dichloropropene [10061-01-5] ^1 0.075 jkg1.00.075 U 1
ug/L EPA 8260B 12/01/11 10:16Dibromochloromethane [124-48-1] ^1 0.63 jkg1.00.63 U 3
ug/L EPA 8260B 12/01/11 10:16Dibromomethane [74-95-3] ^1 0.90 jkg1.00.90 U 10
ug/L EPA 8260B 12/01/11 10:16Ethylbenzene [100-41-4] ^1 0.62 jkg1.00.62 U 1
ug/L EPA 8260B 12/01/11 10:16Iodomethane [74-88-4] ^1 1.7 jkg5.01.7 U 10
ug/L EPA 8260B 12/01/11 10:16Methylene chloride [75-09-2] ^1 0.14 jkg1.00.14 U 1
ug/L EPA 8260B 12/01/11 10:16Styrene [100-42-5] ^1 0.053 jkg1.00.053 U 1
ug/L EPA 8260B 12/01/11 10:16Tetrachloroethene [127-18-4] ^1 0.73 jkg1.00.73 U 1
ug/L EPA 8260B 12/01/11 10:16Toluene [108-88-3] ^1 0.85 jkg1.00.85 U 1
ug/L EPA 8260B 12/01/11 10:16trans-1,2-Dichloroethene [156-60-5] ^1 0.12 jkg1.00.12 U 5
ug/L EPA 8260B 12/01/11 10:16trans-1,3-Dichloropropene [10061-02-6] ^1 0.50 jkg1.00.50 U 1
ug/L EPA 8260B 12/01/11 10:16trans-1,4-Dichloro-2-butene [110-57-6] ^1 0.70 jkg1.00.70 U 100
ug/L EPA 8260B 12/01/11 10:16Trichloroethene [79-01-6] ^1 0.72 jkg1.00.72 U 1
ug/L EPA 8260B 12/01/11 10:16Trichlorofluoromethane [75-69-4] ^1 0.66 jkg1.00.66 U 1
ug/L EPA 8260B 12/01/11 10:16Vinyl acetate [108-05-4] ^1 0.95 jkg5.00.95 U 50
ug/L EPA 8260B 12/01/11 10:16Vinyl chloride [75-01-4] ^1 0.60 jkg1.00.60 U 1
Page 34 of 45
www.encolabs.com
3201-Field BlankDescription:Lab Sample ID:C113671-10 11/29/11 12:15Received:
Matrix:Water Sampled:11/28/11 15:20 Work Order:C113671
City of DurhamProject:Sampled By:N. Rathjen/ K. Sizemore
Volatile Organic Compounds by GCMS
^ - ENCO Cary certified analyte [NC 591]
Analyte [CAS Number]DFUnitsResults MDL Method Analyzed ByMRLFlag NotesNC SWSL
ug/L EPA 8260B 12/01/11 10:16Xylenes (Total) [1330-20-7] ^1 2.1 jkg3.02.1 U 5
Surrogates Results Spike Lvl % Rec Batch Method Analyzed By% Rec Limits NotesDF
4-Bromofluorobenzene 51-122104 %jkgEPA 8260B 12/01/11 10:161K300315250.0 1
Dibromofluoromethane 68-117102 %jkgEPA 8260B 12/01/11 10:161K300315150.0 1
Toluene-d8 67-127102 %jkgEPA 8260B 12/01/11 10:161K300315150.0 1
Page 35 of 45
www.encolabs.com
3201-Field BlankDescription:Lab Sample ID:C113671-10 11/29/11 12:15Received:
Matrix:Water Sampled:11/28/11 15:20 Work Order:C113671
City of DurhamProject:Sampled By:N. Rathjen/ K. Sizemore
Metals (total recoverable) by EPA 6000/7000 Series Methods
^ - ENCO Cary certified analyte [NC 591]
Analyte [CAS Number]DFUnitsResults MDL Method Analyzed ByMRLFlag NotesNC SWSL
ug/L EPA 6020A 12/06/11 14:48Antimony [7440-36-0] ^1 0.220 VLO2.000.220 U 6
ug/L EPA 6010C 12/05/11 11:31Arsenic [7440-38-2] ^1 2.80 JDH10.04.35 J 10
ug/L EPA 6010C 12/05/11 11:31Barium [7440-39-3] ^1 1.00 JDH10.01.00 U 100
ug/L EPA 6010C 12/05/11 11:31Beryllium [7440-41-7] ^1 0.100 JDH1.000.100 U 1
ug/L EPA 6010C 12/05/11 11:31Cadmium [7440-43-9] ^1 0.360 JDH1.000.360 U 1
ug/L EPA 6010C 12/05/11 11:31Chromium [7440-47-3] ^1 1.00 JDH10.01.00 U 10
ug/L EPA 6010C 12/05/11 11:31Cobalt [7440-48-4] ^1 1.10 JDH10.01.10 U 10
ug/L EPA 6010C 12/05/11 11:31Copper [7440-50-8] ^1 1.60 JDH10.01.60 U 10
ug/L EPA 6010C 12/05/11 11:31Lead [7439-92-1] ^1 1.90 JDH10.01.90 U 10
ug/L EPA 6010C 12/05/11 11:31Nickel [7440-02-0] ^1 1.80 JDH10.01.80 U 50
ug/L EPA 6010C 12/05/11 11:31Selenium [7782-49-2] ^1 2.70 JDH10.02.70 U 10
ug/L EPA 6010C 12/05/11 11:31Silver [7440-22-4] ^1 1.90 JDH10.01.90 U 10
ug/L EPA 6020A 12/06/11 14:48Thallium [7440-28-0] ^1 0.110 VLO1.000.110 U 5.5
ug/L EPA 6010C 12/05/11 11:31Vanadium [7440-62-2] ^1 1.40 JDH10.01.40 U 25
ug/L EPA 6010C 12/05/11 11:31Zinc [7440-66-6] ^1 3.80 JDH10.03.80 U 10
This report relates only to the sample as received by the laboratory, and may only be reproduced in full.
Page 36 of 45
www.encolabs.com
3201-Trip BlankDescription:Lab Sample ID:C113671-11 11/29/11 12:15Received:
Matrix:Water Sampled:11/28/11 10:58 Work Order:C113671
City of DurhamProject:Sampled By:ENCO
Volatile Organic Compounds by GCMS
^ - ENCO Cary certified analyte [NC 591]
Analyte [CAS Number]DFUnitsResults MDL Method Analyzed ByMRLFlag NotesNC SWSL
ug/L EPA 8260B 12/01/11 10:451,1,1,2-Tetrachloroethane [630-20-6] ^1 0.90 jkg1.00.90 U 5
ug/L EPA 8260B 12/01/11 10:451,1,1-Trichloroethane [71-55-6] ^1 0.65 jkg1.00.65 U 1
ug/L EPA 8260B 12/01/11 10:451,1,2,2-Tetrachloroethane [79-34-5] ^1 0.75 jkg1.00.75 U 3
ug/L EPA 8260B 12/01/11 10:451,1,2-Trichloroethane [79-00-5] ^1 0.66 jkg1.00.66 U 1
ug/L EPA 8260B 12/01/11 10:451,1-Dichloroethane [75-34-3] ^1 0.080 jkg1.00.080 U 5
ug/L EPA 8260B 12/01/11 10:451,1-Dichloroethene [75-35-4] ^1 0.60 jkg1.00.60 U 5
ug/L EPA 8260B 12/01/11 10:451,2,3-Trichloropropane [96-18-4] ^1 0.72 jkg1.00.72 U 1
ug/L EPA 8260B 12/01/11 10:451,2-Dibromo-3-chloropropane [96-12-8] ^1 0.48 jkg1.00.48 U 13
ug/L EPA 8260B 12/01/11 10:451,2-Dibromoethane [106-93-4] ^1 0.66 jkg1.00.66 U 1
ug/L EPA 8260B 12/01/11 10:451,2-Dichlorobenzene [95-50-1] ^1 0.11 jkg1.00.11 U 5
ug/L EPA 8260B 12/01/11 10:451,2-Dichloroethane [107-06-2] ^1 0.47 jkg1.00.47 U 1
ug/L EPA 8260B 12/01/11 10:451,2-Dichloropropane [78-87-5] ^1 0.59 jkg1.00.59 U 1
ug/L EPA 8260B 12/01/11 10:451,4-Dichlorobenzene [106-46-7] ^1 0.79 jkg1.00.79 U 1
ug/L EPA 8260B 12/01/11 10:452-Butanone [78-93-3] ^1 1.3 jkg5.01.3 U 100
ug/L EPA 8260B 12/01/11 10:452-Hexanone [591-78-6] ^1 0.88 jkg5.00.88 U 50
ug/L EPA 8260B 12/01/11 10:454-Methyl-2-pentanone [108-10-1] ^1 1.1 jkg5.01.1 U 100
ug/L EPA 8260B 12/01/11 10:45Acetone [67-64-1] ^1 1.2 jkg5.01.2 U 100
ug/L EPA 8260B 12/01/11 10:45Acrylonitrile [107-13-1] ^1 3.5 jkg103.5 U 200
ug/L EPA 8260B 12/01/11 10:45Benzene [71-43-2] ^1 0.68 jkg1.00.68 U 1
ug/L EPA 8260B 12/01/11 10:45Bromochloromethane [74-97-5] ^1 0.87 jkg1.00.87 U 3
ug/L EPA 8260B 12/01/11 10:45Bromodichloromethane [75-27-4] ^1 0.75 jkg1.00.75 U 1
ug/L EPA 8260B 12/01/11 10:45Bromoform [75-25-2] ^1 0.68 jkg1.00.68 U 3
ug/L EPA 8260B 12/01/11 10:45Bromomethane [74-83-9] ^1 0.58 jkg1.00.58 U 10
ug/L EPA 8260B 12/01/11 10:45Carbon disulfide [75-15-0] ^1 1.5 jkg5.01.5 U 100
ug/L EPA 8260B 12/01/11 10:45Carbon tetrachloride [56-23-5] ^1 0.69 jkg1.00.69 U 1
ug/L EPA 8260B 12/01/11 10:45Chlorobenzene [108-90-7] ^1 0.74 jkg1.00.74 U 3
ug/L EPA 8260B 12/01/11 10:45Chloroethane [75-00-3] ^1 0.75 jkg1.00.75 U 10
ug/L EPA 8260B 12/01/11 10:45Chloroform [67-66-3] ^1 0.70 jkg1.00.70 U 5
ug/L EPA 8260B 12/01/11 10:45Chloromethane [74-87-3] ^1 0.55 jkg1.00.55 U 1
ug/L EPA 8260B 12/01/11 10:45cis-1,2-Dichloroethene [156-59-2] ^1 0.72 jkg1.00.72 U 5
ug/L EPA 8260B 12/01/11 10:45cis-1,3-Dichloropropene [10061-01-5] ^1 0.075 jkg1.00.075 U 1
ug/L EPA 8260B 12/01/11 10:45Dibromochloromethane [124-48-1] ^1 0.63 jkg1.00.63 U 3
ug/L EPA 8260B 12/01/11 10:45Dibromomethane [74-95-3] ^1 0.90 jkg1.00.90 U 10
ug/L EPA 8260B 12/01/11 10:45Ethylbenzene [100-41-4] ^1 0.62 jkg1.00.62 U 1
ug/L EPA 8260B 12/01/11 10:45Iodomethane [74-88-4] ^1 1.7 jkg5.01.7 U 10
ug/L EPA 8260B 12/01/11 10:45Methylene chloride [75-09-2] ^1 0.14 jkg1.00.14 U 1
ug/L EPA 8260B 12/01/11 10:45Styrene [100-42-5] ^1 0.053 jkg1.00.053 U 1
ug/L EPA 8260B 12/01/11 10:45Tetrachloroethene [127-18-4] ^1 0.73 jkg1.00.73 U 1
ug/L EPA 8260B 12/01/11 10:45Toluene [108-88-3] ^1 0.85 jkg1.00.85 U 1
ug/L EPA 8260B 12/01/11 10:45trans-1,2-Dichloroethene [156-60-5] ^1 0.12 jkg1.00.12 U 5
ug/L EPA 8260B 12/01/11 10:45trans-1,3-Dichloropropene [10061-02-6] ^1 0.50 jkg1.00.50 U 1
ug/L EPA 8260B 12/01/11 10:45trans-1,4-Dichloro-2-butene [110-57-6] ^1 0.70 jkg1.00.70 U 100
ug/L EPA 8260B 12/01/11 10:45Trichloroethene [79-01-6] ^1 0.72 jkg1.00.72 U 1
ug/L EPA 8260B 12/01/11 10:45Trichlorofluoromethane [75-69-4] ^1 0.66 jkg1.00.66 U 1
ug/L EPA 8260B 12/01/11 10:45Vinyl acetate [108-05-4] ^1 0.95 jkg5.00.95 U 50
ug/L EPA 8260B 12/01/11 10:45Vinyl chloride [75-01-4] ^1 0.60 jkg1.00.60 U 1
Page 37 of 45
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3201-Trip BlankDescription:Lab Sample ID:C113671-11 11/29/11 12:15Received:
Matrix:Water Sampled:11/28/11 10:58 Work Order:C113671
City of DurhamProject:Sampled By:ENCO
Volatile Organic Compounds by GCMS
^ - ENCO Cary certified analyte [NC 591]
Analyte [CAS Number]DFUnitsResults MDL Method Analyzed ByMRLFlag NotesNC SWSL
ug/L EPA 8260B 12/01/11 10:45Xylenes (Total) [1330-20-7] ^1 2.1 jkg3.02.1 U 5
Surrogates Results Spike Lvl % Rec Batch Method Analyzed By% Rec Limits NotesDF
4-Bromofluorobenzene 51-122101 %jkgEPA 8260B 12/01/11 10:451K300315150.0 1
Dibromofluoromethane 68-117101 %jkgEPA 8260B 12/01/11 10:451K300315050.0 1
Toluene-d8 67-127102 %jkgEPA 8260B 12/01/11 10:451K300315150.0 1
This report relates only to the sample as received by the laboratory, and may only be reproduced in full.
Page 38 of 45
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QUALITY CONTROL
Volatile Organic Compounds by GCMS - Quality Control
Batch 1K30031 - EPA 5030B_MS
Prepared: 11/30/2011 14:37 Analyzed: 12/01/2011 03:25Blank (1K30031-BLK1)
RPD%RECSourceSpike
MRL Analyte Notes LimitRPDLimits%RECResultLevelUnitsResult Flag
ug/L1.00.90 U 1,1,1,2-Tetrachloroethane
ug/L1.00.65 U 1,1,1-Trichloroethane
ug/L1.00.75 U 1,1,2,2-Tetrachloroethane
ug/L1.00.66 U 1,1,2-Trichloroethane
ug/L1.00.080 U 1,1-Dichloroethane
ug/L1.00.60 U 1,1-Dichloroethene
ug/L1.00.72 U 1,2,3-Trichloropropane
ug/L1.00.48 U 1,2-Dibromo-3-chloropropane
ug/L1.00.66 U 1,2-Dibromoethane
ug/L1.00.11 U 1,2-Dichlorobenzene
ug/L1.00.47 U 1,2-Dichloroethane
ug/L1.00.59 U 1,2-Dichloropropane
ug/L1.00.79 U 1,4-Dichlorobenzene
ug/L5.01.3 U 2-Butanone
ug/L5.00.88 U 2-Hexanone
ug/L5.01.1 U 4-Methyl-2-pentanone
ug/L5.01.2 U Acetone
ug/L103.5 U Acrylonitrile
ug/L1.00.68 U Benzene
ug/L1.00.87 U Bromochloromethane
ug/L1.00.75 U Bromodichloromethane
ug/L1.00.68 U Bromoform
ug/L1.00.58 U Bromomethane
ug/L5.01.5 U Carbon disulfide
ug/L1.00.69 U Carbon tetrachloride
ug/L1.00.74 U Chlorobenzene
ug/L1.00.75 U Chloroethane
ug/L1.00.70 U Chloroform
ug/L1.00.55 U Chloromethane
ug/L1.00.72 U cis-1,2-Dichloroethene
ug/L1.00.075 U cis-1,3-Dichloropropene
ug/L1.00.63 U Dibromochloromethane
ug/L1.00.90 U Dibromomethane
ug/L1.00.62 U Ethylbenzene
ug/L5.01.7 U Iodomethane
ug/L1.00.14 U Methylene chloride
ug/L1.00.053 U Styrene
ug/L1.00.73 U Tetrachloroethene
ug/L1.00.85 U Toluene
ug/L1.00.12 U trans-1,2-Dichloroethene
ug/L1.00.50 U trans-1,3-Dichloropropene
ug/L1.00.70 U trans-1,4-Dichloro-2-butene
ug/L1.00.72 U Trichloroethene
ug/L1.00.66 U Trichlorofluoromethane
ug/L5.00.95 U Vinyl acetate
ug/L1.00.60 U Vinyl chloride
ug/L3.02.1 U Xylenes (Total)
ug/L 50.0 51-122Surrogate: 4-Bromofluorobenzene 10351
Page 39 of 45
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QUALITY CONTROL
Volatile Organic Compounds by GCMS - Quality Control
Batch 1K30031 - EPA 5030B_MS
Prepared: 11/30/2011 14:37 Analyzed: 12/01/2011 03:25Blank (1K30031-BLK1) Continued
RPD%RECSourceSpike
MRL Analyte Notes LimitRPDLimits%RECResultLevelUnitsResult Flag
ug/L 50.0 68-117Surrogate: Dibromofluoromethane 9949
ug/L 50.0 67-127Surrogate: Toluene-d8 10452
Prepared: 11/30/2011 14:37 Analyzed: 12/01/2011 03:54LCS (1K30031-BS1)
RPD%RECSourceSpike
MRL Analyte Notes LimitRPDLimits%RECResultLevelUnitsResult Flag
ug/L1.0 20.0 75-1339820 1,1-Dichloroethene
ug/L1.0 20.0 81-13410321 Benzene
ug/L1.0 20.0 83-1179920 Chlorobenzene
ug/L1.0 20.0 71-1189820 Toluene
ug/L1.0 20.0 75-11510922 Trichloroethene
Prepared: 11/30/2011 14:37 Analyzed: 12/01/2011 04:24Matrix Spike (1K30031-MS1)
Source: C113671-02
RPD%RECSourceSpike
MRL Analyte Notes LimitRPDLimits%RECResultLevelUnitsResult Flag
ug/L1.0 20.0 75-133870.60 U17 1,1-Dichloroethene
ug/L1.0 20.0 81-134940.68 U19 Benzene
ug/L1.0 20.0 83-117920.74 U18 Chlorobenzene
ug/L1.0 20.0 71-118900.85 U18 Toluene
ug/L1.0 20.0 75-1151020.72 U20 Trichloroethene
Prepared: 11/30/2011 14:37 Analyzed: 12/01/2011 04:53Matrix Spike Dup (1K30031-MSD1)
Source: C113671-02
RPD%RECSourceSpike
MRL Analyte Notes LimitRPDLimits%RECResultLevelUnitsResult Flag
ug/L1.0 20.0 2075-13392 60.60 U18 1,1-Dichloroethene
ug/L1.0 20.0 1781-134100 60.68 U20 Benzene
ug/L1.0 20.0 1683-11796 40.74 U19 Chlorobenzene
ug/L1.0 20.0 1771-11894 50.85 U19 Toluene
ug/L1.0 20.0 1875-115105 30.72 U21 Trichloroethene
Metals (total recoverable) by EPA 6000/7000 Series Methods - Quality Control
Batch 1L01016 - EPA 3005A
Prepared: 12/01/2011 10:05 Analyzed: 12/05/2011 10:26Blank (1L01016-BLK1)
RPD%RECSourceSpike
MRL Analyte Notes LimitRPDLimits%RECResultLevelUnitsResult Flag
ug/L10.02.80 U Arsenic
ug/L10.01.00 U Barium
ug/L1.000.100 U Beryllium
ug/L1.000.360 U Cadmium
ug/L10.01.00 U Chromium
ug/L10.01.10 U Cobalt
ug/L10.01.60 U Copper
ug/L10.01.90 U Lead
ug/L10.01.80 U Nickel
Page 40 of 45
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QUALITY CONTROL
Metals (total recoverable) by EPA 6000/7000 Series Methods - Quality Control
Batch 1L01016 - EPA 3005A
Prepared: 12/01/2011 10:05 Analyzed: 12/05/2011 10:26Blank (1L01016-BLK1) Continued
RPD%RECSourceSpike
MRL Analyte Notes LimitRPDLimits%RECResultLevelUnitsResult Flag
ug/L10.02.70 U Selenium
ug/L10.01.90 U Silver
ug/L10.01.40 U Vanadium
ug/L10.03.80 U Zinc
Prepared: 12/01/2011 10:05 Analyzed: 12/05/2011 10:55LCS (1L01016-BS1)
RPD%RECSourceSpike
MRL Analyte Notes LimitRPDLimits%RECResultLevelUnitsResult Flag
ug/L10.0 200 80-120100201 Arsenic
ug/L10.0 200 80-120101202 Barium
ug/L1.00 20.0 80-1209819.7 Beryllium
ug/L1.00 20.0 80-12010320.5 Cadmium
ug/L10.0 200 80-12099199 Chromium
ug/L10.0 200 80-120102205 Cobalt
ug/L10.0 200 80-12098196 Copper
ug/L10.0 200 80-120100200 Lead
ug/L10.0 200 80-120101201 Nickel
ug/L10.0 200 80-12099198 Selenium
ug/L10.0 200 80-120104208 Silver
ug/L10.0 200 80-120101202 Vanadium
ug/L10.0 200 80-120101201 Zinc
Prepared: 12/01/2011 10:05 Analyzed: 12/05/2011 11:02Matrix Spike (1L01016-MS1)
Source: C113671-02
RPD%RECSourceSpike
MRL Analyte Notes LimitRPDLimits%RECResultLevelUnitsResult Flag
ug/L10.0 200 75-1251022.99207 Arsenic
ug/L10.0 200 75-125101130331 Barium
ug/L1.00 20.0 75-1251010.100 U20.1 Beryllium
ug/L1.00 20.0 75-1251040.360 U20.9 Cadmium
ug/L10.0 200 75-1251013.02204 Chromium
ug/L10.0 200 75-1251022.74206 Cobalt
ug/L10.0 200 75-1251041.60 U208 Copper
ug/L10.0 200 75-1251001.90 U200 Lead
ug/L10.0 200 75-1251027.08210 Nickel
ug/L10.0 200 75-1251012.70 U202 Selenium
ug/L10.0 200 75-1251091.90 U217 Silver
ug/L10.0 200 75-1251051.77211 Vanadium
ug/L10.0 200 75-1251043.80 U208 Zinc
Prepared: 12/01/2011 10:05 Analyzed: 12/05/2011 11:04Matrix Spike Dup (1L01016-MSD1)
Source: C113671-02
RPD%RECSourceSpike
MRL Analyte Notes LimitRPDLimits%RECResultLevelUnitsResult Flag
ug/L10.0 200 2075-125106 42.99214 Arsenic
ug/L10.0 200 2075-125100 0.4130330 Barium
ug/L1.00 20.0 2075-125100 0.040.100 U20.1 Beryllium
Page 41 of 45
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QUALITY CONTROL
Metals (total recoverable) by EPA 6000/7000 Series Methods - Quality Control
Batch 1L01016 - EPA 3005A
Prepared: 12/01/2011 10:05 Analyzed: 12/05/2011 11:04Matrix Spike Dup (1L01016-MSD1) Continued
Source: C113671-02
RPD%RECSourceSpike
MRL Analyte Notes LimitRPDLimits%RECResultLevelUnitsResult Flag
ug/L1.00 20.0 2075-125105 0.80.360 U21.0 Cadmium
ug/L10.0 200 2075-125101 0.43.02205 Chromium
ug/L10.0 200 2075-125103 12.74209 Cobalt
ug/L10.0 200 2075-125104 0.51.60 U207 Copper
ug/L10.0 200 2075-125100 0.31.90 U200 Lead
ug/L10.0 200 2075-125103 17.08213 Nickel
ug/L10.0 200 2075-125101 0.52.70 U203 Selenium
ug/L10.0 200 2075-125109 0.61.90 U219 Silver
ug/L10.0 200 2075-125105 0.0051.77211 Vanadium
ug/L10.0 200 2075-125105 13.80 U210 Zinc
Prepared: 12/01/2011 10:05 Analyzed: 12/05/2011 11:06Post Spike (1L01016-PS1)
Source: C113671-02
RPD%RECSourceSpike
MRL Analyte Notes LimitRPDLimits%RECResultLevelUnitsResult Flag
mg/L0.0100 0.200 80-1201010.002990.204 Arsenic
mg/L0.0100 0.200 80-120940.1300.318 Barium
mg/L0.00100 0.0200 80-12098-9.72E-50.0194 Beryllium
mg/L0.00100 0.0200 80-120101-0.0001340.0201 Cadmium
mg/L0.0100 0.200 80-120970.003020.196 Chromium
mg/L0.0100 0.200 80-120990.002740.201 Cobalt
mg/L0.0100 0.200 80-120100-0.0001080.201 Copper
mg/L0.0100 0.200 80-12097-0.0001870.193 Lead
mg/L0.0100 0.200 80-120980.007080.203 Nickel
mg/L0.0100 0.200 80-120104-0.006840.200 Selenium
mg/L0.0100 0.200 80-1201010.001720.204 Silver
mg/L0.0100 0.200 80-1201000.001770.202 Vanadium
mg/L0.0100 0.200 80-120990.003510.201 Zinc
Batch 1L01017 - EPA 3005A
Prepared: 12/01/2011 10:07 Analyzed: 12/06/2011 14:03Blank (1L01017-BLK1)
RPD%RECSourceSpike
MRL Analyte Notes LimitRPDLimits%RECResultLevelUnitsResult Flag
ug/L2.000.220 U Antimony
ug/L1.000.110 U Thallium
Prepared: 12/01/2011 10:07 Analyzed: 12/06/2011 14:15LCS (1L01017-BS1)
RPD%RECSourceSpike
MRL Analyte Notes LimitRPDLimits%RECResultLevelUnitsResult Flag
ug/L2.00 200 80-12093185 Antimony
ug/L1.00 200 80-120102204 Thallium
Prepared: 12/01/2011 10:07 Analyzed: 12/06/2011 14:19Matrix Spike (1L01017-MS1)
Source: C113671-02
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QUALITY CONTROL
Metals (total recoverable) by EPA 6000/7000 Series Methods - Quality Control
Batch 1L01017 - EPA 3005A
Prepared: 12/01/2011 10:07 Analyzed: 12/06/2011 14:19Matrix Spike (1L01017-MS1) Continued
Source: C113671-02
RPD%RECSourceSpike
MRL Analyte Notes LimitRPDLimits%RECResultLevelUnitsResult Flag
ug/L2.00 200 75-125940.277188 Antimony
ug/L1.00 200 75-125910.110 U183 Thallium
Prepared: 12/01/2011 10:07 Analyzed: 12/06/2011 14:21Matrix Spike Dup (1L01017-MSD1)
Source: C113671-02
RPD%RECSourceSpike
MRL Analyte Notes LimitRPDLimits%RECResultLevelUnitsResult Flag
ug/L2.00 200 2075-12593 10.277185 Antimony
ug/L1.00 200 2075-12590 10.110 U181 Thallium
Prepared: 12/01/2011 10:07 Analyzed: 12/06/2011 14:22Post Spike (1L01017-PS1)
Source: C113671-02
RPD%RECSourceSpike
MRL Analyte Notes LimitRPDLimits%RECResultLevelUnitsResult Flag
ug/L2.00 200 80-120980.277196 Antimony
ug/L1.00 200 80-120960.0420192 Thallium
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FLAGS/NOTES AND DEFINITIONS
B The analyte was detected in the associated method blank.
D The sample was analyzed at dilution.
J The reported value is between the laboratory method detection limit (MDL) and the laboratory method
reporting limit (MRL), adjusted for actual sample preparation data and moisture content, where applicable.
U The analyte was analyzed for but not detected to the level shown, adjusted for actual sample preparation
data and moisture content, where applicable.
E
MRL Method Reporting Limit. The MRL is roughly equivalent to the practical quantitation limit (PQL) and is
based on the low point of the calibration curve, when applicable, sample preparation factor, dilution
factor, and, in the case of soil samples, moisture content.
The concentration indicated for this analyte is an estimated value above the calibration range of the
instrument. This value is considered an estimate.
Page 44 of 45
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Page 45 of 45
ENCO Cary
WORK ORDER
C113671
Golder Associates, Inc. (GO007)
City of Durham 073-9604211.100Project: Project Number:
Client:
Printed: 12/9/2011 2:00:13PM
Lab Project Mgr:Stephanie Franz
PO #:
Sample Receipt Conditions
Report To:
Golder Associates, Inc. (GO007)
Dusty Reedy
5B Oak Branch Drive
Greensboro, NC 27407
Phone: [phone]
Fax: [phone]
Invoice To:
Golder Associates, Inc. (GO007)
Accounts Payable
5B Oak Branch Drive
Greensboro, NC 27407
Phone :[phone]
Fax: [phone]
29-Nov-11 13:06
29-Nov-11 12:15
Date Logged In:
Date Received:Miranda E Stamper
Miranda E StamperLogged In By:
Received By:
Work Order Comments:
C-005 received at 1.8°C
COC/Labels AgreeProper Containers ReceivedContainers Properly PreservedContainers Intact Y Y Y Y
Custody Seals Intact Volatile Containers Preserved Volatile Containers Headspace Free Aqueous Samples Checked for Residual Cl
All Samples in PreLog Received
Y Y Y N
N
Received On Ice Y
Page 1 of 1
GOLDER ASSOCIATES INC.
QUALITY ASSURANCE & QUALITY CONTROL
LABORATORY DATA REVIEW
Page 1 of 4

Project Name: City of Durham
Project Reference Number: 0739-604211.100
Sampling Event Date: November 28, 2011
Review Date: December 21, 2011 Initials: KS
Report #: C113671
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)
NC Closed Facility List (.500 Rules)
NC C & D List (New Rules)
X NC Appendix I
NC Appendix I + Detects
NC Appendix II
NC Subtitle D Leachate List
Other:

1.0 CHAIN OF CUSTODY (COC) REVIEW

KS COC was properly signed by all parties.

KS Correct project name and number are on the form.
KS Sample receipt condition at laboratory was acceptable.
KS Each sample and blank submitted for analysis appears in the report.

GOLDER ASSOCIATES INC.
QUALITY ASSURANCE & QUALITY CONTROL
LABORATORY DATA REVIEW
Page 2 of 4

2.0 SAMPLE HOLDING TIMES

KS 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 and 8011 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
SW-846 Method 9010 Cyanide 14 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

KS Laboratory analyzed at least one internal blank for each method, where applicable.
KS Laboratory blank is interference-free.
KS Surrogate recoveries are provided for each analytical method, where applicable.
KS Surrogate recoveries for each method are within the acceptable limits (i.e., at least
50% of the surrogates were within range).
KS MS/MSD/LCS data results are provided for each analytical method.
KS MS/MSD/LCS recoveries for each method are within the acceptable limits (i.e., at least 1 of the 3 were within range).

4.0 ANALYTE LISTS/METHODS

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

KS Proper EPA SW-846 analytical methods were used for analysis.
GOLDER ASSOCIATES INC.
QUALITY ASSURANCE & QUALITY CONTROL
LABORATORY DATA REVIEW
Page 3 of 4
5.0 DATA REPORTING

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

Field Blank: Arsenic @ 4.35J ug/L
B-flags for the following: MW-3, MW-5, MW-9R, & S2
KS 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.

KS The report provides the reporting limit for each constituent.
KS The results were reported at or below their proper reporting limits (i.e., MDLs with
SWSLs reported). 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.

KS No organic constituents were reported above their respective SWSLs, and no inorganic or organic constituents were reported above their respective NC 2L
Drinking Water Standards/GWPS in wells, or field/equipment/trip blanks, or above
applicable surface water standards in surface water points.

Organic Constituents Above SWSLs and NC 2L:
MW-10:
 1,2-dichloropropane: 4.0 ug/L (NC2L = 0.6 ug/L)
 Benzene: 1.6 ug/L (NC2L = 1.0 ug/L)
 Cis-1,2-dichloroethene: 140 ug/L (NC2L = 70 ug/L)
 Trichloroethene: 5.9 ug/L (NC2L = 3.0 ug/L)
 Vinyl chloride: 9.9 ug/L (NC2L = 0.3 ug/L)

GOLDER ASSOCIATES INC.
QUALITY ASSURANCE & QUALITY CONTROL
LABORATORY DATA REVIEW
Page 4 of 4
Inorganic constituents above NC 2L and/or GWPS, or Surface Water Standards:

MW-5:
 Barium: 1870 ug/L (NC 2L = 700 ug/L)

KS No inorganic or organic constituents were detected in a well or surface water point at
quantified concentrations outside of their historical range (more than 5X previous concentrations or first-time detections).

MW-9R:
 Vanadium: 9.59 J ug/L (greater than 5x previous

MW-10:
 Silver: 7.19 J ug/L (greater than 5x previous)

KS Other report issues/Communications with laboratory/etc.:
Notes: n/a

g:\projects\city of durham\gwmr\november 2011\draft second semiannual 2011 gw monitoring report.docx

APPENDIX C

Statistical Evaluation Summary Table and Worksheets

April 2012 Page 1 of 1 0739-604211.100
NC 2L GWPS Interwell Intrawell
Barium ug/L 100 700 --MW-5 1870 5564 NA Not SSI
Notes:
1. Statistical worksheets are provided as Appendix C.
2. ug/L = micrograms per liter
3. NC 2L = North Carolina 2L Groundwater Standard
4. GWPS = North Carolina Solid Waste Section Groundwater Protection Standard
5. NA = not applicable
6. SSI = statistically significant increase
7. SWS = Solid Waste Section
Summary of Statistical Analysis
City of Durham Closed Landfill, Permit No. 32-01
Durham County, North Carolina
November 2011
Detected Monitoring
Constituent/ Analytes Reporting Units SWS Reporting
Limit
Groundwater Standard Downgradient
Monitoring Well
Constituent/
Analyte
Concentration
Statistical Analysis Statistical
Determination
8. North Carolina Appendix I Inorganic constituents detected above their respective Solid Waste Section Reporting Limit and Groundwater Standard in samples
from downgradient monitoring wells were statistically evaluated.
G:\Projects\City of Durham\GWMR\November 2011\Stats\Stats Summary Table November 2011.xls
April 2012 Page 1 of 11 0739604211.100
Project Name:City of Durham - Closed Landfill
Project No:739604211.100
Date:12/19/11
Analyte:Barium Quantitation
Concentration Limit
Sample No.Sample Date Location (ug/L)(ug/L)
1 9/19/94 PZ-6 1834 --
2 12/2/94 PZ-6 760 --
3 2/7/95 PZ-6 2648 --
4 3/13/95 PZ-6 524 --
5 11/1/95 PZ-6 970 --
6 6/10/96 PZ-6 891 --
7 11/12/96 PZ-6 1555 --
8 3/18/97 PZ-6 850 --
9 10/2/97 PZ-6 840 --
10 5/26/98 PZ-6 779 --
11 12/1/98 PZ-6 2390 --
12 6/7/99 PZ-6 1850 --
13 12/15/99 PZ-6 944 --
14 6/6/00 PZ-6 2488 --
15 12/27/00 PZ-6 1826 --
16 6/4/01 PZ-6 2804 --
17 12/3/01 PZ-6 965 --
18 6/10/02 PZ-6 849 --
19 12/16/02 PZ-6 620 --
20 6/9/03 PZ-6 432 --
21 12/8/03 PZ-6 2881 --
22 6/29/04 PZ-6 5664 --
23 12/20/04 PZ-6 578 --
24 6/5/05 PZ-6 952 --
25 12/5/05 PZ-6 435 --
26 6/5/06 PZ-6 575 --
27 12/5/06 PZ-6 635 --
28 5/30/07 PZ-6 619 100
29 11/19/2007 PZ-6 1300 100
30 5/19/2008 MW-9R 55 J 100
31 11/19/08 MW-9R 38 J 100
32 6/30/09 MW-9R 51.2 J 100
33 11/30/09 MW-9R 45.8 J 100
34 5/20/10 MW-9R 45.1 J 100
35 11/19/10 MW-9R 53.3 J 100
36 5/19/11 MW-9R 53.1 J 100
37 11/28/11 MW-9R 80.4 J 100
Number of Data 37
Number of Truncated Data 0
Percentage of Truncated Data 0%
Nonparametric Prediction Interval: 5664 ug/L
G:\Projects\City of Durham\GWMR\November 2011\Stats\Barium November 2011.xlsx
April 2012 Page 2 of 11 0739604211.100
Project Name:City of Durham - Closed Landfill
Project No:739604211.1
Date:12/19/11
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 = 37
X(i)LN[X(i)]i Rank [Rank/(n+1)]Quantiles
38 3.64 1 1 0.026 -1.94
45.1 3.81 2 2 0.053 -1.62
45.8 3.82 3 3 0.079 -1.41
51.2 3.94 4 4 0.105 -1.25
53.1 3.97 5 5 0.132 -1.12
53.3 3.98 6 6 0.158 -1.00
55 4.01 7 7 0.184 -0.90
80.4 4.39 8 8 0.211 -0.80
432 6.07 9 9 0.237 -0.72
435 6.08 10 10 0.263 -0.63
524 6.26 11 11 0.289 -0.55
575 6.35 12 12 0.316 -0.48
578 6.36 13 13 0.342 -0.41
619 6.43 14 14 0.368 -0.34
620 6.43 15 15 0.395 -0.27
635 6.45 16 16 0.421 -0.20
760 6.63 17 17 0.447 -0.13
779 6.66 18 18 0.474 -0.07
840 6.73 19 19 0.500 0.00
849 6.74 20 20 0.526 0.07
850 6.75 21 21 0.553 0.13
891 6.79 22 22 0.579 0.20
944 6.85 23 23 0.605 0.27
952 6.86 24 24 0.632 0.34
965 6.87 25 25 0.658 0.41
970 6.88 26 26 0.684 0.48
1300 7.17 27 27 0.711 0.55
1555 7.35 28 28 0.737 0.63
1826 7.51 29 29 0.763 0.72
1834 7.51 30 30 0.789 0.80
1850 7.52 31 31 0.816 0.90
2390 7.78 32 32 0.842 1.00
2488 7.82 33 33 0.868 1.12
2648 7.88 34 34 0.895 1.25
2804 7.94 35 35 0.921 1.41
2881 7.97 36 36 0.947 1.62
5664 8.64 37 37 0.974 1.94
G:\Projects\City of Durham\GWMR\November 2011\Stats\Barium November 2011.xlsx
April 2012 Page 3 of 11 0739604211.100
Project Name:City of Durham - Closed Landfill
Project No:739604211
Date:12/19/11
Probability Plots to determine the distribution of Barium
R² = 0.7766
-2.50
-2.00
-1.50
-1.00
-0.50
0.00
0.50
1.00
1.50
2.00
0 1000 2000 3000 4000 5000 6000
Qu
a
n
t
i
l
e

Concentration, Micrograms per Liter
Normal Probability Plot
Barium Concentrations
R² = 0.8785
-2.00
-1.50
-1.00
-0.50
0.00
0.50
1.00
1.50
2.00
2.50
0.00 2.00 4.00 6.00 8.00 10.00
Qu
a
n
t
i
l
e

Log Normal Concentrations
Log Normal Probability Plot
Barium Concentrations
G:\Projects\City of Durham\GWMR\November 2011\Stats\Barium November 2011.xlsx
April 2012 Page 4 of 11 0739604211.100
Project Name:City of Durham - Closed Landfill
Project No:739604211.1
Date:12/19/11
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 9/19/94 PZ-6 1834 --
2 12/2/94 PZ-6 760 --
3 2/7/95 PZ-6 2648 --
4 3/13/95 PZ-6 524 --
5 11/1/95 PZ-6 970 --
6 6/10/96 PZ-6 891 --
7 11/12/96 PZ-6 1555 --
8 3/18/97 PZ-6 850 --
9 10/2/97 PZ-6 840 --
10 5/26/98 PZ-6 779 --
11 12/1/98 PZ-6 2390 --
12 6/7/99 PZ-6 1850 --
13 12/15/99 PZ-6 944 --
14 6/6/00 PZ-6 2488 --
15 12/27/00 PZ-6 1826 --
16 6/4/01 PZ-6 2804 --
17 12/3/01 PZ-6 965 --
18 6/10/02 PZ-6 849 --
19 12/16/02 PZ-6 620 --
20 6/9/03 PZ-6 432 --
21 12/8/03 PZ-6 2881 --
22 6/29/04 PZ-6 5664 --
23 12/20/04 PZ-6 578 --
24 6/5/05 PZ-6 952 --
25 12/5/05 PZ-6 435 --
26 6/5/06 PZ-6 575 --
27 12/5/06 PZ-6 635 --
28 5/30/07 PZ-6 619 --
29 11/19/2007 PZ-6 1300 100
30 5/19/2008 MW-9R 55 100
31 11/19/08 MW-9R 38 100
32 6/30/09 MW-9R 51.2 100
33 11/30/09 MW-9R 45.8 100
34 5/20/10 MW-9R 45.1 100
35 11/19/10 MW-9R 53.3 100
36 5/19/11 MW-9R 53.1 100
37 11/28/11 MW-9R 80.4 100
mean = 1104.862
STD = 1136.825
G:\Projects\City of Durham\GWMR\November 2011\Stats\Barium November 2011.xlsx
April 2012 Page 5 of 11 0739604211.100
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 = 5664.000
mean = 1104.862
STD = 1136.825
Tn = 4.010
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 =37
Tc = 2.835
Since Tc<Tn, the sample result is considered to be an outlier
G:\Projects\City of Durham\GWMR\November 2011\Stats\Barium November 2011.xlsx
April 2012 Page 6 of 11 0739604211.100
Project Name:City of Durham - Closed Landfill
Project No:739604211.1
Date:12/19/11
Determination of reported background value as an outlier
Analyte:Barium
Background Data Quantitation
ln(Concentration)Limit
Sample No.Sample Date Location (ug/l)(ug/l)
1 9/19/94 PZ-6 7.514254653 --
2 12/2/94 PZ-6 6.633318433 --
3 2/7/95 PZ-6 7.881559917 --
4 3/13/95 PZ-6 6.261491684 --
5 11/1/95 PZ-6 6.877296071 --
6 6/10/96 PZ-6 6.792344427 --
7 11/12/96 PZ-6 7.349230825 --
8 3/18/97 PZ-6 6.745236349 --
9 10/2/97 PZ-6 6.733401892 --
10 5/26/98 PZ-6 6.658011046 --
11 12/1/98 PZ-6 7.779048645 --
12 6/7/99 PZ-6 7.522940918 --
13 12/15/99 PZ-6 6.850126166 --
14 6/6/00 PZ-6 7.819234454 --
15 12/27/00 PZ-6 7.509883061 --
16 6/4/01 PZ-6 7.938802248 --
17 12/3/01 PZ-6 6.872128101 --
18 6/10/02 PZ-6 6.744059186 --
19 12/16/02 PZ-6 6.429719478 --
20 6/9/03 PZ-6 6.068425588 --
21 12/8/03 PZ-6 7.965892735 --
22 6/29/04 PZ-6 8.641885635 --
23 12/20/04 PZ-6 6.359573869 --
24 6/5/05 PZ-6 6.858565035 --
25 12/5/05 PZ-6 6.075346031 --
26 6/5/06 PZ-6 6.354370041 --
27 12/5/06 PZ-6 6.453624999 --
28 5/30/07 PZ-6 6.428105273 --
29 11/19/2007 PZ-6 7.170119543 100
30 5/19/2008 MW-9R 4.007333185 100
31 11/19/08 MW-9R 3.63758616 100
32 6/30/09 MW-9R 3.935739532 100
33 11/30/09 MW-9R 3.824284091 100
34 5/20/10 MW-9R 3.808882247 100
35 11/19/10 MW-9R 3.975936331 100
36 5/19/11 MW-9R 3.972176928 100
37 11/28/11 MW-9R 4.387014176 100
mean = 6.347
STD = 1.408
Note: All concentrations are micrograms per liter
Using the data listed above, form the statisitc Tn:
G:\Projects\City of Durham\GWMR\November 2011\Stats\Barium November 2011.xlsx
April 2012 Page 7 of 11 0739604211.100
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 = 8.642
mean = 6.347
STD = 1.408
Tn = 1.629
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 =37
Tc = 2.835
Since Tc>Tn, the sample result is not considered to be an outlier
G:\Projects\City of Durham\GWMR\November 2011\Stats\Barium November 2011.xlsx
April 2012 Page 8 of 11 0739604211.100
Project Name:City of Durham - Closed Landfill
Project No:739604211
Date:12/19/11
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 38.00 5664.00 5626 0.404 2272.90
2 45.10 2881.00 2835.9 0.2794 792.35
3 45.80 2804.00 2758.2 0.2403 662.80
4 51.20 2648.00 2596.8 0.2116 549.48
5 53.10 2488.00 2434.9 0.1883 458.49
6 53.30 2390.00 2336.7 0.1683 393.27
7 55.00 1850.00 1795 0.1503 269.79
8 80.40 1834.00 1753.6 0.1344 235.68
9 432.00 1826.00 1394 0.1196 166.72
10 435.00 1555.00 1120 0.1056 118.27
11 524.00 1300.00 776 0.0924 71.70
12 575.00 970.00 395 0.0798 31.52
13 578.00 965.00 387 0.0677 26.20
14 619.00 952.00 333 0.0559 18.61
15 620.00 944.00 324 0.0444 14.39
16 635.00 891.00 256 0.0331 8.47
17 760.00 850.00 90 0.0220 1.98
18 779.00 849.00 70 0.0110 0.77
19 840.00 840.00 0 0 0.00
20 849.00 779.00
21 850.00 760.00
22 891.00 635.00
23 944.00 620.00
24 952.00 619.00
25 965.00 578.00
26 970.00 575.00
27 1300.00 524.00
28 1555.00 435.00
29 1826.00 432.00
30 1834.00 80.40
31 1850.00 55.00
32 2390.00 53.30
33 2488.00 53.10
34 2648.00 51.20
35 2804.00 45.80
36 2881.00 45.10
37 5664.00 38.00
G:\Projects\City of Durham\GWMR\November 2011\Stats\Barium November 2011.xlsx
April 2012 Page 9 of 11 0739604211.100
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)=6093.41
SD = standard deviation of the data group =1136.83
n = number of samples =37
W =0.798
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) = 0.936
and the calculated W = 0.798
Therefore the data is Non Normal
G:\Projects\City of Durham\GWMR\November 2011\Stats\Barium November 2011.xlsx
April 2012 Page 10 of 11 0739604211.100
Project Name:City of Durham - Closed Landfill
Project No:739604211
Date:12/19/11
Shapiro Wilk Test Statistic (W) for log normality 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
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 3.64 8.64 5.0043 0.4040 2.0217
2 3.81 7.97 4.1570 0.2794 1.1615
3 3.82 7.94 4.1145 0.2403 0.9887
4 3.94 7.88 3.9458 0.2116 0.8349
5 3.97 7.82 3.8471 0.1883 0.7244
6 3.98 7.78 3.8031 0.1683 0.6401
7 4.01 7.52 3.5156 0.1503 0.5284
8 4.39 7.51 3.1272 0.1344 0.4203
9 6.07 7.51 1.4415 0.1196 0.1724
10 6.08 7.35 1.2739 0.1056 0.1345
11 6.26 7.17 0.9086 0.0924 0.0840
12 6.35 6.88 0.5229 0.0798 0.0417
13 6.36 6.87 0.5126 0.0677 0.0347
14 6.43 6.86 0.4305 0.0559 0.0241
15 6.43 6.85 0.4204 0.0444 0.0187
16 6.45 6.79 0.3387 0.0331 0.0112
17 6.63 6.75 0.1119 0.0220 0.0025
18 6.66 6.74 0.0860 0.0110 0.0009
19 6.73 6.73 0.0000 0.0000 0.0000
20 6.74 6.66
21 6.75 6.63
22 6.79 6.45
23 6.85 6.43
24 6.86 6.43
25 6.87 6.36
26 6.88 6.35
27 7.17 6.26
28 7.35 6.08
29 7.51 6.07
30 7.51 4.39
31 7.52 4.01
32 7.78 3.98
33 7.82 3.97
34 7.88 3.94
35 7.94 3.82
36 7.97 3.81
37 8.64 3.64
G:\Projects\City of Durham\GWMR\November 2011\Stats\Barium November 2011.xlsx
April 2012 Page 11 of 11 0739604211.100
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)=7.8447
SD = standard deviation of the data group =1.4084
n = number of samples =37
W =0.8618
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) = 0.936
and the calculated W = 0.862
Therefore the data is Non Normal
G:\Projects\City of Durham\GWMR\November 2011\Stats\Barium November 2011.xlsx

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