WI0400023_Post Injection Monitoring Report_20001218

•
the VI*OUP.
December 11, 2000
Ms. Sherri V. Knight
North Carolina Department of Environment and Natural Resources
Winston Salem Regional Office
585 Waughtown Street
Winston-Salem, NC 27107-2241
Subject: Post Injection Monitoring Report
W.P. Ballard Property
2701 Branchwood Drive
Greensboro, Guilford County, North Carolina
Groundwater Incident No. # 6953
Site Priority Ranking: Low (E-070)
IT Corporation of North Carolina Project # 107535
Dear Ms. Knight:
IT Corporation ofNorth (,ar &a, Inc.
2200 Gateway Centre Boulevard, Suite 205
Morrisville, NC 27560-9122
Tel. [phone]
Fax.[phone] Q
A btember of Ile tFCO?up O C)
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On behalf of Sears Logistics Services, Inc. (SLS), we are hereby forwarding a Post Injection Monitoring
Report that presents the results of groundwater and soil vapor monitoring conducted at the subject site in
September and October 2000. These monitoring events were performed as a follow-up to Final Project
Evaluation Report, (IT Corporation, September 16, 2000) that documented the pilot test of in situ chemical
oxidation with permanganate performed from April to May 2000. It is requested that the NCDENR review
the enclosed report and forward your comments to the UIC permit section in Raleigh in support of our UIC
permit application for full scale implementation of in situ oxidation with permanganate. We would also like
to respectfully request that the NCDENR review and approve the Comprehensive Site Assessment (CSA)
submitted on December 17, 1999 and the Corrective Action Plan (CAP) submitted on May 20, 1999.
This Post Injection Monitoring Report is also being submitted simultaneously to the UIC Permit Section so
they can proceed with review of it along with the Final Project Evaluation Report and approve our UIC
permit application for the full-scale permanganate injection at this site.
As discussed with you in the past, Sears Logistics Services, Inc (SLS) is pursuing a UIC permit and other
approvals necessary to implement a multi -phased plan to remediate contamination caused by a release
(or releases) of perchloroethylene from the W. P. Ballard property. These releases subsequently
migrated from the former dry cleaning supply company site onto the property formerly owned by SLS. As
part of a property transfer, our client (SLS) has entered into an agreement with the purchaser of the SLS
property, Regent Partners, to reduce contaminant levels in soil and shallow groundwater (less than 65
feet below ground surface). One of the goals of this remediation program is, by March 2003, to reduce
the contaminant levels in groundwater and soil on both the Ballard property and the former SLS property
to 90% below the January 1999 (baseline) levels.
As presented in the CAP submitted to you in May 1999, the first phase of the remedial action plan is to
apply in situ oxidation with permanganate to reduce groundwater and soil concentrations by at least 60%.
Upon approval of our UIC permit application, IT Corporation is prepared to continue with implementation

If Corporation ofNorth Carolina, Inc.
A 31emher of The IT Croup
Monitoring Report Page 2 of 2
W.P. Ballard Property December 11 2000
of the phased program of in situ oxidation with permanganate, which started with the pilot test conducted
in April — May 2000.
The second phase of the clean-up plan is to install and operate a High Vacuum Dual Phase
Extraction/Soil Vapor Extraction (HVDPE/SVE) remediation system to further remediate the target area
plume and achieve the final remedial goals. This year, we applied for and obtained the NPDES and air
permits necessary to operate this system. We have also designed, procured and installed the
components of this system at the site. Final construction and system shakedown are underway now.
Start-up is anticipated within the next 2-3 weeks
We look forward to working with the Department to proactively remediate this site. NCDENR's expedited
review of the enclosed Post Injection Monitoring Report, and the previously submitted Final Project
Evaluation Report are respectfully requested to facilitate approval of the UIC permit application and the
rapid` implementation of the remediation plan for this site. If you have any questions or concerns
regarding the enclosed document, please contact Keith at 919-467-2227, extension 224 or Dale at,
extension 246.
Sincerely,
CORPORATION OF NORTH CAROLINA, INC.
Dale E. Egner, L.G.
Project Geologist
Enclosure — Post Injection Monitoring Report
cc: Melanie Wells — Guilford County Health Department
Mark Pritzl — UIC Permit Section
Tom Grandys — SLS
W. P Ballard
file
P_(4!: � n
R. Keith Ogden-, PE, RSM
Senior Project Manager

IT Corporation ofNort6 Carolina, Inc.
A Member of The IT Group
f
POST -INJECTION MONITORING REPORT
Qc
W. P. Ballard Property
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2701 Branchwood Drive
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- Greensboro, Guilford County, North Carolina
NCDENR Groundwater Incident # 6953'
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IT Corporation of North Carolina Project # 107535
December 11, 2000
Prepared by.
IT Corporation of North Carolina, Inc.
2200 Gateway Center Drive, Suite 205
Morrisville, North Carolina 27560
[phone]
Release / Site Information:
Land Use Category:
To be assigned by Department
Responsible Party:
W.P Ballard and Company of Greensboro, Inc.
Current Property Owner:
1775 The Exchange
Suite 320
Atlanta, Georgia 30339
Phone [phone]
Contact:
Mr. Wiley P. Ballard
Date Release Discovered:
September 3, 1991
Estimated Quantity of Release:
Unknown
Source of Release:
550-gallon gasoline UST and historic dry cleaning operations
USTs at Time of Release:
1-550 gallon gasoline and 1-550 gallon heating oil
Latitude and Longitude:
36.10630' N and 79.823930 W
by:
Dale E. Egnec; ��c�•° •�`a° ;jl/
GGNS •v V ;
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Project Geoftist• o
SEAL =
1708 a
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®FOLOG�S°GZ
DWARF
Reviewed by:
?--: t c��
R. Keith Ogden, hi, P. E.
Senior Project Manager

IT Corporation oilYorth Carolina, Inc.
A 111ember of The IT Croup
Post -Injection Monitoring Report Page ii
W. P. Ballard and Downgradient Properties December 11, 2000
TABLE OF CONTENTS
EXECUTIVESUMMARY....................................................................................................................... 1
1.0 INTRODUCTION......................................................................................................................... 3
1.1 BACKGROUND............................................................................................................................3
1.2 REPORT OBJECTIVES................................................................................................................. 6
2.0 FIELD ACTIVITIES..................................................................................................................... 7
2.1 WELL GAUGING......................................................................................................................... 7
2.2 FIELD MONITORING.................................................................................................................... 7
2.3 SAMPLE COLLECTION................................................................................................................. 7
3.0 LABORATORY ANALYSIS RESULTS...................................................................................... 9
3.1 SOIL VAPOR.............................................................................................................................. 9
3.2 GROUNDWATER.........................................................................................................................9
3.2.1 VOLATILE ORGANICS............................................................................................................... 9
3.2.2 CHLORIDE............................................................................................................................10
4.0 CONCLUSIONS........................................................................................................................12
5.0 RECOMMENDATIONS ............................
...................................................... :.......................... 13
FIGURES
Figure 1 - Site Location Map
Figure 2 - Monitoring Well Locations
Figure 3 - W. P. Ballard and Axton -Cross Property Monitoring Well Locations
Figure 4 - Phase 1 NaMn04 Injection Points
Figure 5 - Phase 2 NaMn04 Injection Points
Figure 6 - Groundwater Elevation Contours Shallow and Deep Monitoring Wells
Figure 7 - Pre- & Post -Injection Total VOCs in Soil Vapor - WP Ballard & Axton -Cross Properties
Figure 8 - Total VOCs - Shallow Monitoring Wells - March 2000 (Pre -injection)
Figure 9 - Total VOCs - Shallow Monitoring Wells - September 2000 (Post -injection)
Figure 10 - Total VOCs - Deep Monitoring Wells - March 2000 (Pre -injection)
Figure 11 - Total VOCs - Deep Monitoring Wells - September 2000 (Post -injection)
Figure 12 - Pre- & Post -injection Total VOCs - Shallow Monitoring Wells
Figure 13 - Pre- & Post -injection Total VOCs - Deep Monitoring Wells
Figure 14 - Chloride Concentration in Source Area Groundwater - October 2000

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IT Corporation ofll'orfh Carolina, Inc.
A Member of The IT Croup
Post -Injection Monitoring Report Page iii
'I W. P. Ballard and Downgradient Properties December 11, 2000
TABLES
Table 1 - Well Construction Summary
- Table 2 - Summary of Groundwater Gauging and Field Monitoring Data
Table 3 - Soil Vapor Field Monitoring Data
Table 4 - Soil Vapor Analytical Data Summary
Table 5 — Pre- and Post -Injection Groundwater Data Summary- WP Ballard Property
Table 6 - Pre- and Post -Injection Groundwater Data Summary- Axton -Cross Property
j Table 7 - Historic Groundwater Analytical Data Summary - Shallow Wells
Table 8 - Historic Groundwater Analytical Data Summary - Deep Wells
i Table 9 -Groundwater Analytical Data Summary - HVDP Wells
Table 10 -Groundwater Analytical Data Summary - SVE Wells
APPENDICES
A - Laboratory Analytical Data Reports

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IT Corporation ofNorih Carolina, Inc.
A Member of The IT Croup
Post -Injection Monitoring Report Page 1
W. P. Ballard and Downgradient Properties December 11, 2000
EXECUTIVE SUMMARY
This monitoring report provides information on volatile organic compound and chloride levels in
! groundwater and soil vapor samples collected in September and October 2000 at the W.P. Ballard site
in Greensboro, North Carolina. These samples were collected after the completion of the pilot test of in
situ chemical oxidation conducted at the site in April and May 2000. During the pilot test, Sodium
Permanganate (NaMn04) was injected into the subsurface to destroy chlorinated solvents, specifically
Tetrachloroethylene (PCE). Also, this report provides baseline information that will be used to evaluate
the effectiveness of the operation of a High Vacuum Dual Phase/Soil Vapor Extraction (HVDP/SVE)
remediation system that is being installed at the site and anticipated to be started up in December 2000.
Based on the results of the September and October 2000 monitoring events, the following conclusions
are made:
• The vertical and horizontal extent of VOCs in groundwater and soil at the site (originally defined in
the December 1999, CSA) continues to be defined. The boundaries of the plume extent have not
changed significantly.
• In general, Total VOCs in shallow groundwater in the source area on the WP Ballard property were
reduced by the injection of sodium permanganate and the process occurred over an extended period
after the actual injection of the oxidant. However, Total VOCs in three wells in the source area (MW-
4, MW-6, & DW-1) increased after the injection event. The increased concentrations in the three
wells were reduced during the September sampling event, but did not return to a level less than the
pre -injection value.
• Total VOCs in all but one (PT-3D) of the wells monitoring shallow groundwater (less than 35 feet) on
the Axton -Cross property (downgradient of the source area) were reduced and did not rebound as
much as the shallow wells in the source area. The limited degree of rebound is likely due to the
absence of appreciable quantities of PCE in the vadose zone soils, available to desorb into the
groundwater.
• Total VOCs in deeper groundwater (greater than 50 feet), were reduced by the permanganate
injection to a greater degree and rebounded less than in shallow groundwater. This result is likely
due to the bottom up injection method that was used and the greater permeability of the formation at
depth allowing better dispersion of the oxidizer in this deeper zone.
• The permanganate injection caused the concentrations of PCE in groundwater in a few wells (MW-4,
MW-6, PT-3D, and DW-1), to increase immediately after the injection of the oxidant. This increase
in Total VOC concentrations can be attributed to one or more of the following factors:
➢ The presence of petroleum hydrocarbons with chlorinated ethenes and insufficient permanganate to oxidize both the
hydrocarbons and the targeted solvents.
➢ Reduction in the partitioning coefficient, due to the destruction of VOCs by the oxidant, allowing more of the chlorinated
ethenes to desorb from source area soils into the groundwater. During the full-scale permanganate injection, it is
proposed to re -inject in these areas to oxidize the remaining chlorinated solvents.
• Chloride concentrations in groundwater were not significantly increased by the permanganate

IT Corporation of North Carolina, Inc.
A Member of The IT Croup
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W. P. Ballard and Downgradient Properties December 11, 2000
injection. This observation is based on comparing data collected before the pilot test in January 1999
to data collected 5 months after the pilot test.
To implement the processes designed and tested for cleanup of the subject site, the following
j recommendations are made:
_ NCDENR should approve the CSA that was submitted in December 1999.
• NCDENR should approve the CAP that was submitted in May 1999.
• NCDENR should approve the UIC permit application for the full-scale permanganate injection that was
submitted in May 1999.
• SLS should implement the full-scale permanganate injection upon NCDENR approval of the UIC
permit to expedite reduction of VOC concentrations in groundwater and soils. The recommendations
for the full-scale injection, contained in the Final Project Evaluation Report (IT Corporation, September
i
2000) should be followed.
• SLS should start up the HVDP/SVE remediation system in December 2000 to further reduce soil and
groundwater contaminant levels in the source area.

IT Corporation ofNorih Carolina, Inc.
A Member of The IT Croup
Post -Injection Monitoring Report
W. P. Ballard and Downgradient Properties
1.0 INTRODUCTION
1.1 Background
Page 3
December 11. 2000
The subject site is a former dry cleaning supply facility, located at 2701 Branchwood Drive, approximately 400
feet east of Battleground Avenue in Greensboro, Guilford County, North Carolina. The site location is shown
on a portion of the United States Geological Survey 7.5-minute topographic map of Greensboro, North
Carolina Quadrangle, included as Figure 1.
The subject site was developed in 1957 as a dry cleaning supply and distribution facility, operated by the W.P.
Ballard and Company of Greensboro, Inc. (Ballard). From 1990 to July 1999, Phenix Supply Company leased
the site from Ballard. A petroleum hydrocarbon release was discovered during the. performance of
underground storage tank (UST) removal activities, in September 1991. At the time of the discovery of the
release, two 550-gallon USTs, one containing heating oil and one containing gasoline, were removed. The
release was reported to have been associated with the former gasoline UST. The estimated quantity and
cause of this release are unknown. The NCDENR was notified of the release in September 1091. There are
currently no other UST systems at the site.
To assess the extent of the petroleum hydrocarbon contamination, six monitoring wells (MW-1 through MW-6)
were installed on -site by Mortensen Engineering, Inc. (Mortensen) in April 1992. Laboratory analytical results
for the groundwater samples collected from monitoring wells MW-1 through MW-6 indicated the presence of
high concentrations of dissolved phase chlorinated solvents, consisting mainly of tetrachloroethene and its
associated breakdown products. Tetrachloroethene concentrations detected ranged from '11 ug/L (MW-5)
to 270,000 ug/L (MW-3). The detected release is associated with tetrachloroethene (PCE) distribution
activities that have historically been performed on site. The cause and estimated quantity of the PCE release
or releases is unknown. The release could have been caused by:
• a leak or leaks in 55-gallon drums stored on site or from the 6000-gallon AST, or
• spillage during filling of the 6000-gallon AST from railcars or filing of distribution trucks from the 6000-
gallon AST.
In July 1999, the Phenix Supply Company vacated the property and dry cleaning supply operations ceased.
In August 1999, the 6000-gallon AST that formerly held bulk PCE was removed from the site.
During the subsequent assessment of the chlorinated solvent release, performed between April 1992 and
January 1997 by Mortenson, a total of 38 monitoring wells were installed to determine the aerial and vertical
extent of the dissolved phase plume. The wells included twenty six (26) Type ll, shallow groundwater
monitoring wells, to 35 feet bgs and twelve (12) Type III, deep monitoring wells, to depths ranging from 47 feet
to 63.5 feet bgs

IT Corporation of Norih Carolina, Inc.
I A Alember of The IT Group
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Post -Injection Monitoring Report Page 4
W. P. Ballard and Downgradient Properties December 11, 2000
In October 1998, IT Corporation of North Carolina, Inc. (formerly Fluor Daniel GTI) was retained to
prepare and implement a Corrective Action Plan for the Ballard property and the adjacent property
formerly owned by Sears Logistics Services. In January 1999, IT Corporation personnel supervised the
installation of twelve soil vapor monitoring points (SVMP-1 through SVMP-12) to 12 feet bgs and two Type
II and four Type III monitoring wells (LMP-1 and B2 and DMP-1 through B4) to similar depths as those
constructed previously. A well construction summary is included as Table 1 and maps illustrating the
locations of all monitoring wells on the W. P. Ballard and Downgradient Properties and W. P. Ballard and
Axton -Cross properties only are included as Figures 2 and 3, respectively.
Soil sampling to delineate the extent of petroleum hydrocarbons in soil for the Comprehensive Site
Assessment (CSA) investigation was performed September 29 and 30, 1999 and involved sampling
1
_ Geoprobe probes GP-1, -2, -3, and B4. The probes were located on the W. P. Ballard property and the
former SLS property. All probes were advanced to a depth of 20 feet below ground surface to assure
j penetration of the groundwater/soil interface. The findings of the Geoprobe survey are presented in the
- CSA submitted to the NCDENR on December 17, 1999.
Monitoring well construction for the CSA investigation was conducted from September 30 to October 21,
1999 to expand the groundwater monitoring network in the intermediate (60 to 80 feet below ground
surface (bgs)) and deep/bedrock zones. The CSA investigation wells were intended to expand the
existing monitoring well to achieve areal and vertical delineation of the chlorinated solvent plume. To
complete delineation of the areal extent of the chlorinated plume, three Type II monitoring wells (DW-13,
-14, and B15) were constructed to a total depth of 65 feet below grade. In addition to the shallow wells,
four (4) deep zone or bedrock Type III monitoring wells (BMW-1, -2, -3 & -4) were installed to attempt to
delineate the vertical extent of the chlorinated solvent plume. Results of the delineation investigation were
presented in the CSA issued December 17, 1999 and the locations of the wells are indicated on Figures
2 and 3.
In early 1999, IT Corporation performed an evaluation of remedial alternatives -and prepared a proposed
- Corrective Action Plan (IT Corporation, May 1999) for this site that was submitted to NCDENR. The
I,
conceptual remedial design was prepared based on the evaluation of remedial alternatives, and results
of the pilot scale and bench scale testing activities that had been performed in 1997, 1998 and 1999. A
j multi -phase approach was proposed. The initial phase will consist of a comprehensive in situ oxidation
application event. The in situ oxidation will be performed by application of an oxidizer, sodium
permanganate, into the subsurface using direct push technology (Geoprobe). The application of
permanganate is expected to rapidly and aggressively oxidize the chlorinated ethenes and significantly
reduce their concentrations in soil and groundwater at the site. Implementation of this remedial approach
is currently awaiting approval by NCDENR of the full scale injection UIC permit based on the results of
i
_ J a pilot injection test performed in April and May of 2000.

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A Member of The IT Croup
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_ Post -Injection Monitoring Report Page 5
W. P. Ballard and Downgradient Properties December 11, 2000
The pilot injection test was performed in two phases: the Phase.1 application was performed in the area
immediately adjacent to the former tetrachloroethene storage AST on the W.P. Ballard property. Phase
2 of the pilot test was performed hydraulically down -gradient of the Phase 1 area, in remedial Zone 2;
immediately south of Rollins Road, on the former SLS property. Site maps showing the Phase 1 and 2
application areas are -included as Figures 4 and 5, respectively.
• The Phase 1 application was performed over an 11- day period from April 25, 2000 to May 4, 2000
i_ then again from May 11, 2000 to May 17, 2000. A total of 5,245 gallons of 15% sodium
permanganate solution was applied to the subsurface using a Geoprobe to perform direct push and
pressure injection. A total of twenty injection points were performed within the Phase 1 test area
surrounding the former tetrachloroethene AST and the former petroleum UST locations.
• The Phase 2 application was performed over a 5-day period from May 5, 2000 to May 11, 2000. A
total of 3,029 gallons of 15% solution of sodium permanganate was applied to the treatment zone
using a Geoprobe to perform direct push and pressure injection. A total of thirteen injection points
were performed within the Phase 2 test area located immediately to the east of the Axton Cross
building on the former SLS property.
Subsequent to the pilot injection test, groundwater and soil vapor sampling were performed and. the
results of these events are presented in this report.
In addition to the in situ oxidation event, a high -vacuum dual phase (HVDP) groundwater extraction and
treatment system coupled with a low vacuum soil vapor extraction (SVE) and treatment system has been
designed and is being installed at the site. The purposes of the HVDP and low vacuum SVE systems are
twofold:
• First, the system has been designed to specifically address the source area and any adjacent areas
where elevated adsorbed and dissolved phase concentrations persist following the initial oxidation
event.
• Second, the groundwater and soil vapor extraction system will be used to augment future in situ
oxidation events in impacted areas isolated from advective flow.
System installation began in January 2000 with the installation of the remedial system wells which
included the construction of:
• 29 High Vacuum Dual Phase (HVDP) recovery wells screened from 35 to 75 feet bgs;
• 14 Soil Vapor Extraction (SVE) wells screened from 7 to 40 feet bgs; and
• 9 Air Injection Wells (AIW) screened from 55 to 65 feet bgs.
Remedial system piping installation was completed in April 2000 and the component installation is being
completed currently. System startup is anticipated for December 2000.

IT Corporation oPNort6 Carolina, Inc.
A Memher of The IT Croup
Post -Injection Monitoring Report
W. P. Ballard and Downgradient Properties
Page 6
December 11, 2000
1.2 Report Objectives
The objectives of this report are:
• First, to provide information on groundwater and soil vapor volatile organic compounds and chloride
levels after the completion of the pilot injection test. During the pilot injection test, Sodium
Permanganate (NaMnO4) was injected into the subsurface to destroy chlorinated solvents, specifically
Tetrachloroethylene (PCE).
• Second, this report provides baseline Total Volatile Organic compound information that will be used
to evaluate the system effectiveness of the operation of the HVDP/SVE system being installed and
anticipated to be started up in December 2000.

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IT Corporation ofNorth Carolina, Inc.
A Member of The IT Croup
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Post -Injection Monitoring Report Page 7
W. P. Ballard and Downgradient Properties December 11, 2000
2.0 FIELD ACTIVITIES
The following activities were performed subsequent to the pilot injection test and prior to the full-scale in
situ oxidation event and startup of the HVDP/SVE system. Results will be used to evaluate the
effectiveness of in situ oxidation and to aid in the detailed design and implementation of the full scale
injection event as well as establish a baseline prior to startup of the HVDP/SVE system.
2.1 Well Gauging
All existing monitoring wells, High Vacuum Dual Phase (HVDP) extraction wells, and Soil Vapor Extraction
(SVE) wells were gauged to measure depth to water and thickness of Light Non Aqueous Phase Liquid
LNAPL and Dense Non Aqueous Phase Liquid DNAPL nor to sampling. No LNAPL or DNAPL
( ) q 4 ( )P• P•9•
thicknesses were detected in any wells at the site. Data collected during the post injection well gauging
conducted September 6, 2000 and historical data are shown in Table 2 and groundwater elevation
contours based on the gauging data are illustrated on Figure 6.
i 2.2 Field Monitoring
Prior to purging shallow and deep monitoring wells, HVDP wells, and SVE wells, the following
groundwater parameters were measured; color, temperature, dissolved oxygen (DO) concentration,
oxidation reduction potential (ORP), pH and conductivity. Recorded groundwater measurements are
tabulated in Table 2.
Soil vapor readings were collected from the. twelve (12) soil vapor monitoring points, SVMP-1 through
SVMP-12, located on the Ballard property, in the source area. Prior to collecting the soil vapor readings
and the tedlar bag samples, three well boring volumes of soil vapor were evacuated at low flow rates (<1.5
cfm) using a Gast 1/3 HP compressor/vacuum pump. Between each well volume recovered, soil vapors
were field screened for total VOCs using a photo ionization detector (PID). At the conclusion of purging,
the well vapor pressure and temperature in each well was measured and recorded. In addition, values
were measured and recorded for Total VOCs (using PID), carbon dioxide (COZ), carbon monoxide (CO),
lower explosive limit (%LEL), oxygen, chlorine gas, and methane. Soil vapor measurements taken
September 9, 2000 and historical data are presented in Table 3.
2.3 Sample Collection
During the period from September 6 through 14, 2000 all shallow monitoring wells, deep monitoring wells,
and remedial system (HVDP and SVE) wells were gauged and groundwater samples collected. As
-- previously described, the wells were gauged using an electronic interface probe and field measurements
were collected from each well prior to purging. Each well was sampled using a low flow technique where
a flow rate was established with a variable frequency pump that would attempt to not cause the well to
purge dry and the groundwater directed through a flow -through cell that continuously measured pH,
conductivity, dissolved oxygen, temperature, and oxidation/reduction potential (ORP). A water sample
was taken when the measured parameters in each well reached a quasi -static condition (i.e. most recent
measurement did not vary more than 10% from previous two readings). If the well purged dry, the well

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A Member of The /T Croup
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W. P. Ballard and Downgradient Properties December 11, 2000
was allowed to recover to at least 80% of the pre -purging water level and a sample taken.
-- Each sample was properly preserved and packed in a cooler immediately after collection. The
'i
groundwater samples were shipped via overnight courier to Specialized Assays, Inc., in Nashville,
Tennessee for the following analyses:
• All wells sampled - Purgeable Halocarbons by EPA Method 601
i Wells in the vicinity of former petroleum UST including MW-3, MW-4, MW-6, BMW-1, BMW-2, DW-3,
PT-1 S, PT-21D, PT-5S, PT-51D, HVDP-13, HVDP-14, SVE-8, and SVE-9 - Benzene, toluene,
ethylbenzene, and total xylenes (BTEX) by EPA Method 602.
A second groundwater sampling event was conducted October 18 and 19, 2000 from shallow and deep
monitoring wells on the W. P. Ballard property including MW-2 through -6, DW-1, DW-3, DW-4, BMW-1,
and BMW-2. Wells were gauged and sampled as described above and groundwater samples sent to
Specialized Assays, Inc., in Nashville, Tennessee for the following analyses:
• All wells sampled - Purgeable Halocarbons by EPA Method 601 and Chlorides by Method SM 9056.
• Wells in dissolved petroleum hydrocarbon plume area including MW-3, MW-4, DW-3, BMW-1, and
BMW-2 - Benzene, toluene, ethylbenzene, and total xylenes (BTEX) by EPA Method 602.
On September 11, 2000, soil vapor samples were collected from 18 soil vapor monitoring points including
SVMP-1 through SVMP-12, EW-2, EW-4, PT-1S, PT-3S, PT-4S, and PT-5S. The wells were sampled
by removing the well cap and installing a temporary (tri-seal) wellhead adapter. Each well was then field
screened for VOC concentrations using a photo ionization detector (PID) prior to purging. A Gast vacuum
pump was connected to the well head adapter using polyethylene tubing, with new tubing being used at
each point. Using the Gast vacuum pump, three boring volumes of soil vapors, or approximately 28.5 ft3,
were evacuated from each well at a maximum flow rate of 1.5 cfm. Purged soil vapors were field
screened using a PID following the evacuation of each well boring volume. Following purging, the vacuum
pump was disconnected and the well was allowed to equilibrate for a minimum of five minutes. The soil
vapor total VOC concentrations were again field screened using a PID and an air bag sample was
collected at each point. Vapor samples were shipped via overnight courier to MicroSeeps Inc., in
Pittsburgh, Pennsylvania for the analysis by EPA Method T03 - for the Method 601 Compound List.

IT Corporation ofll'orth Carolina, Inc.
A Member of The IT Group
i II
Post -Injection Monitoring Report
W. P. Ballard and Downgradient Properties
3.0 LABORATORY ANALYSIS RESULTS
3.1 Soil Vapor
Page 9
December 11, 2000
Results of the post injection vapor sample laboratory analysis are, being used to measure the
effectiveness of in situ oxidation on the source area adsorbed contamination and to aid in the final design
of the full scale injection event. A summary of the historic soil vapor analytical results including the most
recent September 9, 2000 information is provided in Table 4. Concentrations reported above detection
levels were volatile organic compounds consisting mainly of tetrachloroethene and other chlorinated
ethenes. A comparison of the pre -injection and post -injection concentrations is presented in Figure 7 and
indicates the following:
Soil vapor concentrations measured approximately one month after the in -situ oxidation event was
completed were reduced at least an order of magnitude from the pre -injection values in all of the soil
vapor monitoring points sampled.
• After about four months, soil vapor concentrations in most of the source area monitoring points
rebounded to values ranging from 38 to 92 percent of the pre -injection values. There were two
exceptions to this:
j 1. monitoring points SVMP-5, -6, and —8 in the central portion of the source area rebounded
to levels greater than the pre -injection levels; and
2. levels in monitoring points downgradient of the source area (PT wells on the Action -Cross
property) had a greater short-term reduction (as much as two orders of magnitude) and
maintained about an order of magnitude reduction for the four month period.
3.2 Groundwater
Laboratory analytical results from this sampling event will be used to make final modifications .to the full
scale in situ oxidation event design as well as to establish the pre -operational baseline for the high
vacuum dual.phase extraction and air sparge remediation system. Pre- and post -injection groundwater
analytical results for wells in the injection areas, on the WP Ballard and Axton -Cross properties, are
included in Tables 5 and 6. Historical analytical results from sampling events for the other shallow and
deep monitoring wells are presented on Tables 7 and 8, respectively. The initial groundwater sampling
results for the HVDP and SVE wells, associated with the remediation system, are presented in Tables
9 and 10, respectively. Groundwater quality data reviewed to assess the effectiveness of the pilot scale
in situ oxidation event report include the following sampling events:
• Pre -injection - March 24, 2000
• Post -injection (approximately one month) - June.21, 2000; and
• Post -injection (approximately four months) - September 9, 2000 and October 18/19, 2000.
3.2.1 Volatile Organics
,i The primary chemicals of concern for evaluating the effectiveness of the in situ oxidation are
Tetrachloroethylene (PCE) and organic constituents associated with its degradation. The total VOCs

IT Corporadon ofNorth Carolina, Inc.
A Alember of The IT Group
�I
Post -Injection Monitoring Report Page 10
W. P. Ballard and Downgradient Properties December 11, 2000
reported for the March 24, 2000 (pre -injection) and September 9, 2000 (post -injection) groundwater
sampling events are contoured for the shallow (<65 feet deep) monitoring wells in Figures 8 and 9,
respectively. The deep well (>65 feet deep) VOC iso-concentrations are contoured for the same periods
on Figures 10 and 11. The following observations can be made by comparing the pre- and post -injection
VOC concentration contour maps for the shallow and deep zones:
• The general shape of the dissolved VOC plume in the shallow groundwater zone, 30 to 45 feet deep,
remained essentially unchanged, from the pre- to post -injection monitoring events. This is illustrated
on Figure 8 and 9 using the 5000 mg/I Total VOC contour as a marker for comparison.
• The deep groundwater VOC concentrations appear to have been affected more than the shallow ones
in the areas where the in -situ oxidizer was injected. This is particularly evident in the southern,
western, and internal portions of the iso-concentration map.
• The injection event on the W. P. Ballard property appeared to cause the VOC concentrations to
become more centralized (evidenced by the smaller diameter of the 20,000 ug/1 contour). It also
caused the downgradient plume to be modified considerably which is evidenced by the inward
movement of the 5000 ug/1 contour. Some of the contour modification from the pre- to post -injection
monitoring can be attributed to the increase in control due to data being available from the HVDP
wells constructed for the remediation of the groundwater. However, there is a definite trend of
reduction of the higher concentrations in the source area on the W. P. Ballard property and on the
Acton -Cross property. Both of these areas are where the oxidizer was injected to depths ranging
from 50 to 65 feet below ground surface.
Reduction of groundwater Total VOC concentrations in shallow and deep monitoring wells were also
evaluated using the graphical presentations shown in Figures 12 and 13. These charts illustrate that:
• Total VOC concentrations in groundwater were reduced from 1 to 92 percent, for an average
reduction value of 32 percent, in all but four (4) monitoring wells.
• Wells that have data plotted for one and four months after the injection event show that the Total VOC
reduction occurred over a limited time period after, the initial injection.
• Total VOC concentrations in the four wells that still showed increases at the four month monitoring
event (MW-4, MW-6, DW-1 and PT-3D) showed significant reductions when compared to the one
month value.
3.2.2 Chloride
_. The chloride concentration in groundwater is influenced during the oxidation of chlorinated solvents due
1
to the release of chlorine from the organic molecular structure. The chloride (Cl -) concentration in
groundwater is commonly measured indirectly using a conductivity cell due to the conductivity of water
-i being a function of the Cl - ion concentration.
During the in -situ oxidation event, conductivity was measured daily in groundwater with a conductivity
meter and significant, short duration increases in conductivity were noted. These transients did not last
for longer than a few days and conductivity values in wells monitored appeared to return to near pre -
injection values. The conductivity information is tabulated in Table 4 and the transients discussed herein
are illustrated in Figures 9a through 9e in the Final Project Evaluation Report submitted to the NCDENR
Y_! September 12, 2000.

IT Corporation ofNor& Canolinn, Inc.
A Member of The IT Croup
I I
Post -Injection i � on Monitoring Report Page 11
W. P. Ballard and Downgradient Properties December 11, 2000
j The long term effect on chloride concentrations in groundwater was evaluated for this report by collecting
— and analyzing groundwater samples in selected wells in the source area for chloride on October 18 and
19, 2000, approximately four months after the in -situ oxidizer injection event. During well purging,
conductivity values were measured and recorded and groundwater samples sent to the laboratory to be
analyzed for chloride content.
Chloride concentrations are tabulated in Table 9 and illustrated on Figure 14. Reported chloride
concentrations, measured several months after the injection event, range from non -detectable (ND) to
5.3 mg/I in MW-3, near the center of source area, which is considerably less than the NCAC 2L standard
of 250 mg/I for chloride in groundwater. Groundwater sample analyses for chlorides performed in January
of 1999, a considerable time before the injection event, were presented in the Pre -CAP Groundwater
Monitoring Report and reported chloride levels in DMP-1, LMP-1, and MW-3 to be 98.0 mg/I, 17.3 mg/I,
and 5.84 mg/I, respectively.

IT Corporadon ofNorth Carolina, Inc.
A bfemher of The IT Croup
I �
i
I �
Post -Injection Monitoring Report Page 12
W. P. Ballard and Downgradient Properties December 11, 2000
4.0 CONCLUSIONS
Based on the results of the September and October 2000 monitoring, the following conclusions. are made:
• The vertical and horizontal extent of VOCs in groundwater and soil at the. site (originally defined in the
December 1999 CSA) continues to be defined. The boundaries of the plume extent have not
changed significantly.
• In general, Total VOCs in shallow groundwater in the source area on the WP Ballard property were
reduced by the injection of sodium permanganate and the process occurred over an extended period
after the actual injection of the oxidant. However, Total VOCs in three wells in the source area (MW-
4, MW-6, & DW-1) increased, after the injection event. As illustrated on Figure 12, the increased
concentration in the three wells was reduced, but did not return to a level less than the pre -injection
value.
• Total VOCs in all but one (PT-3D) of the wells monitoring shallow groundwater (less than 35 feet) on
the Axton -Cross property (downgradient of the source area) were reduced but did not rebound as
much as the shallow wells in the source area. The limited degree of rebound is likely due to the
absence of appreciable quantities of PCE in the vadose zone soils, available to desorb into the
groundwater.
• Total VOCs in deeper groundwater (greater than 50 feet), as illustrated on Figure 13, were reduced
by the permanganate injection to a greater degree and rebounded less than in shallow groundwater.
This result is likely due to the bottom up injection method that was used and the greater permeability
of the formation at depth allowing better dispersion of the oxidizer in this deeper zone.
• The permanganate injection caused the concentrations of PCE in groundwater in a few wells (MW-4,
MW-6, PT-3D, and DW-1), to increase immediately after the injection of the oxidant. This increase
in Total VOC concentrations could be attributed to one or more of the following factors:
➢ The presence of petroleum hydrocarbons from the UST release with the chlorinated ethenes and insufficient
permanganate injected to oxidize both the hydrocarbons and the targeted solvents.
➢ Reduction in the partitioning coefficient, due to the destruction of VOCs by the oxidant, allowing more of the chlorinated
ethenes to desorb from source area soils into the groundwater. During the full-scale permanganate injection, it is
proposed to re -inject in these areas to oxidize the remaining chlorinated solvents.
• Chloride concentrations in groundwater were not significantly increased by the permanganate
injection. This observation is based on comparing data collected before the pilot test in January 1999
to data collected 5 months after the pilot test.

IT Corporation of North Carolina, Inc.
A Member of The IT Group
Post -Injection Monitoring Report
W. P. Ballard and Downgradient Properties
Page 13
December 11, 2000
5.0 RECOMMENDATIONS
To implement the processes designed and tested for cleanup of the subject site, the following
recommendations are made:
• NCDENR should approve the CSA that was submitted in December 1999.
• NCDENR should approve the CAP that was submitted in May 1999.
• NCDENR should approve the UIC permit application for the full-scale permanganate injection that was
submitted in May 1999.
• SLS should implement the full-scale permanganate injection upon NCDENR approval of the UIC
permit to expedite reduction of VOC concentrations in groundwater and soils. The recommendations
for the full scale injection, contained in the Final Project Evaluation Report, should be followed.
• SLS should start up the HVDP/SVE remediation system in the fourth quarter of 2000 to further reduce
soil and groundwater contaminant levels in the source area.

IT Corporation ofNorth Carolina, Inc.
A Member of The IT Croup
FIGURES

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IT CORPORATION of NORTH 2200 Gateway Centre Blvd.
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11 /28/2000
QUADRANGLE LOCATION
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0 2000 4000 W. P. BALLARD & DOWNGRADIENT PROPERTIES
CLIENT: SEARS LOGISTIC SERVICES PM.
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SCALE IN FEET LOCATION: PEIRG:
GREENSBORO, NORTH CAROLINA
SOURCE: TOPOGRAPHY TAKEN FROM USGS 7.5 MINUTE QUADRANGLE DESIGNED: DETAILED: PROJECT NO: FIGURE:
GREENSBORO, NC, REVISED 1963 DEE 107535 1

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LOCATION:
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FIGURE 7
COMPARISON OF PRE -INJECTION AND POST -INJECTION SOIL VAPOR VOCS IN SVMP AND PT WELLS
W.P. BALLARD AND DOWNGRADIENT PROPERTY
GREENSBORO, NORTH CAROLINA
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( � )`FA�C"OF�CUR9 I )
- OLDZ� \ (724.0) ®V3 \ ` _ - GATE
00
IN
.. T CLP "/ / k/ - 6G0 \ �.80 ,o) I - ." \ \ � � . . 7.0)\ \ N�2a `
(30,0M)wv� I `; L T Y x�A \ \: v ` (3�F5.
�I. ) �28
�7� :o BUMNG \ \�5820.0)- 5890Qp
.0)I \
��`' —.
(g .o) r►'� s j / — \ \ ASPHALT PAVEMENT `. \
9utl.dNO N n .r (Bs a)� ,r y - s, v I. . - raw, \. \ ® .
1� \ AND CONCRETE
(7_ u) \ ASPHALT PA ''
(saHwoo /' 0:0)
- B -
<852.0)' I \ .
(54-2.0)23
.
A.
\
( s25.0 \ \ .! ♦ice' �.' /. Hwr•13�. .l .� .e._ •.� \
43 O.Ojy bMA.:
/ ♦ �f.BU�15i�INyI (103 0\ 7 HpM141 \"�QFA
- !� .1 -.% - .♦� 8 I x 01 \ .. (•25:0).60
Ill.\ I 1 \� � �/lx4�-6 �•I I" � __� ----�
'�IArZZ� — // ----- BUILDING
66
41P-2z DW,.v",
�REANGNG WAL1\
NOTES:' .
HORIZONTAL DATUM IS NAD" '93.
VERTICAL DATUM- IS NGVD '29.
THIS IS.NOT'A BOUNDARY SURVEY.
NOT -FOR' RECORDATION.
MAPPING SCALE-: 1 INCH =' 60 FEET.
MAPPNG CONTOUR INTERVAL SHOWN HEREON = 2 FEET,
PROPERTY LINE FROM PLAN ENTITLED 'ALTA/ACSM LAND
TITLE 'SURVEY FOR; GREENSBORO Q.C.. PARTNERS, LTD',
DATED 5/12/25 PREPARED BY ROBERT E. WILSON, INC.
i.
HIGH VOLTAGE k - - .
GENERATOR iNSDE -
:o
o
MANHOLE
M NTH O R OLlw OF
NORTH CAROLING,. INC. .
ANmdAwa[7 oJTGA r
2200 GATEWAY CENTRE 6LVD.
SUITE 20& [phone] .
MORRISVILLE, NC v96o
TOTAL:.VOCe"
DEEP MONITORING- WELLS.
SEPTEMBER 2000
(POST -INJECTION)
REINFORCED CONCRETE PIPE /
UTILITY POLE If SITE;W.P. BALLARD PROPERTY
F LIGHT POLE
1 LOCATION: "
ElINIET / GREENSBORU, NC
1
® DRAINAGE MANHOLE
_ GESICNE4 BYs. DETAILED.SY: CHECKED RYS
SS a�1CEANOUT RHW GRAPHIC SCALE O _ DRAWING DATE: ACAli FILE: 30 . 60 - . 120. 240 WATER'VALVE _ _ 12/5/00" : tlgl 1 dvoc
'k 1\ - U FIRE HYDRANT "
Q EIDSIING IRON PIPE l - PROJECT NO:: - NOTES:.
Y (' .IN FEET: ) - - !1/ _ " 107535 -
\ SEWER MANHOLE - -
\\GV cis VALVE FIG. 11

1,000,000
100,000
10,000
v
Z
1,000
W
U
Z
O
U
U
0 100
10
1
FIGURE 12
COMPARISON OF PRE -AND POST -INJECTION TOTAL VOCS IN GROUNDWATER
INJECTION ZONE SHALLOW MONITORING WELLS
WP BALLARD AND DOWNGRADIENT PROPERTIES, GREENSBORO, NORTH CAROLINA
MW-1 MW-2 MW-3 MW-4 MW-5 MW-6 MW-10 PT-3S PT-4S PT-5S SVE-8 SVE-9
WELL NUMBER

1,000,000
100,000
10,000
z
O
Q
z 1,000
w
u
z
O
U
U
0 100
10
1
FIGURE 13
COMPARISON OF PRE -AND POST INJECTION TOTAL VOCS IN GROUNDWATER
INJECTION ZONE DEEP MONITORING WELLS
W. P. BALLARD AND DOWNGRADIENT PROPERTIES, GREENSBORO, NORTH CAROLINA
DW-1 DW-2 DW-3 DW-4 BMW-1 BMW-2 PT-1 D PT-2D PT-3D PT-4D PT-5D HVDP-13 HVDP-14
WELL NUMBER

alE
IWO. I?
BUILDING
_0
-.0
0
(37.0)
(2.7)
(NS)
(Rs).
(2.8)
A;
ONN-40P
(1.6)
.10
7,
rF CORPORATM-OF
NORTH. CAROLINA, INC.
2200 GATEWAY CENTRE EILVD,.
SUrM 205
MORRWU.E. NC.27560
(919) 46.7-2227
CHLORIDE
-po
CONCENTRATION
LEGEND
SOURCE AREA
MONITO.RING-WELLS
M. (N S)
MONITORING POINT
OCTOBER 2000
BUILDING
(INS)
C)
O-0
(2.8) CHLORIDE CONCENTRATION
SEARS-SLS
mg/L.
(INS) NOT SAMPLED
LOCATION:
GREENSBOROi NC
NOTES: I
HORIZONTAL DATUM IS. NAq '83.
VERTICAL DATUM IS NGVD 29,
DESIGNED BY:. IDETAILED-BY.- CHECKED EM
:RHW
-0
THIS IS NOT A. -BOUNDARY. SURVEY.
DRAWING DATE: ACAD FILE.
2.E�_ 0 7535CHLOR
10
GRAPHIC SCALE
1.0 0 2.0
NOT FOR RECORDATION. FEET.
MAPPING SCALE : 1 INCH = 50
MAPPING CONTOUR INTERVAL SHOWN -HEREON 2,FEET.
NOTE
PROJECT NO.., S.,
I
9 -
PROPERTY LINE FROM PLAN ENTITLED "ALTA/ACSM LAND
107535
Tam
moor_—
(IN FEET
TITLE SURVEY FOR:- GREENSBORO D.C. PARTNERS, LTD.",
DATED. 5,12/95 PREPARED- BY RCEIERT I- WILSON. INC.
FIG..' 14

IT Corporation ofNorih Carolina, Inc.
A Member of The IT Croup
TABLES

Table 1
Well Construction Summmary
W.P. Ballard and Downgradient Properties
Greensboro, North Carolina
Well
Identification
Casing
Diameter
Well
Material
Total
Depth
Cased
Interval
Screened
Interval
Top of Casing
Elevation
Notes
MW-1
2"
PVC
35'
0-25'
25-35'
881.03
MW-2
2"
PVC
35'
0-25'
25-35'
882.43
MW-3
2"
PVC
35'
0-25'
25-35'
883.1
MW-4
2"
PVC
35'
0-25'
25-35'
882.33
MW-5
2"
PVC
35'
0-25'
25-35'
883.47
MW-6
2"
PVC
35'
0-25'
25-35'
884.33
MW-7
2"
PVC
35'
0-25'
25-35'
882.59
MW-8
2"
PVC
35'
0-25'
25-35'
883.03
MW-9
2"
PVC
35'
0-25'
25-35'
880.43
MW-10
2"
PVC
35'
0-25'
25-35'
882.42
MW-11
2"
PVC
35'
0-25'
25-35'
874.71
MW-12
2"
PVC
35'
0-25'
25-35'
862.15
MW-13
2"
PVC
35'
0-25'
25-35'
863.77
MW-14
2"
PVC
35'
0-25'
25-35'
884.36
MW-15
2"
PVC
35'
0-25'
25-35'
872.1
MW-16
2"
PVC
35'
0-25'
25-35'
NS
Destroyed during construction
MW-17
2"
PVC
35'
0-25'
25-35'
861.43
MW-18
2"
PVC
35'
0-25'
25-35'
862.26
MW-19
2"
PVC
35'
0-25'
25-35'
NS
Destroyed during construction
MW-20
2"
PVC
35'
0-25'
25-35'
866.15
MW-21
2"
PVC
35'
0-25'
25-35'
866.12
MW-22
2"
PVC
35'
0-25'
25-35'
861.83
MW-23
2"
PVC
35'
0-25'
25-35'
861.15
MW-24
2"
PVC
35'
0-25'
25-35'
NS
Destroyed during construction
MW-25
2"
PVC
35'
0-25'
25-35'
NS
Destroyed during construction
MW-26
2"
PVC
35'
0-25'
25-35'
NS
Destroyed during construction
MW-27
2"
PVC
35'
0-25'
25-35'
879.8
MW-28
1"
PVC
35'
0-25'
25-35'
881.23
LMP-1
2"
PVC
35'
0-25'
25-35'
873.5
LMP-2
2"
PVC
35'
0-25'
25-35'
871.41
DW-1
1"
PVC
65'
0-50' / 0-55'
55'-65'
882.31
DW-2
2"
PVC
65'
0-50' / 0-55'
55-65'
881.12
DW-3
2"
PVC
65'
0-50' / 0-55'
55'-65'
882.59
DW-4
2"
PVC
65'
0-50' / 0-55'
55'-65'
883.69
DW-5 _
2"
PVC
63.5'
-45' / 0-48.5
48.5-63.5'
872.80
DW-6
2"
PVC
63.5'
-45' / 0-48.5
48.5-63.5'
NS
Destroyed during construction
DW-7
2"
PVC
63.5'
-45' / 0-48.5
48.5-63.5'
862.17
DW-8
2"
PVC
63.5'
-45' / 0-48.5
48.5-63.5'
861.44
DW-9
2"
PVC
53'
0-40' / 0-43'
43-53'
NS
Destroyed during construction
DW-10
2"
PVC
58'
0-40' / 0-43'
43'-58'
NS
Destroyed during construction
DW-11
2"
PVC
53'
0-40' / 0-43'
43-53'
NS
Destroyed during construction
DW-12
2"
PVC
47'
0-4070-42'
42-47'
845.45
DW-13
2"
PVC
76'
0-61'
61-76'
861.10??
DW-14
2"
PVC
69'
0-54'
54-69'
860.06
DW-15
2"
PVC
79'
0-64'
64-79'
861.20
DMP-1
2"
PVC
65'
0-4570-50'
50-60'
870.83
DMP-2
2"
PVC
60'
0-4570-50'
50-60'
872.13
DMP-3
2"
PVC
57'
0-4070-47'
47-57'
862.18
DMP-4
2"
PVC
64'
0-41'/0-49'
49-64'
862.25
BMW-1
6" / 2"
Galv. Steel/PVC
150'
0-1231/0-130
.130-150'
882.45??
BMW-2
6" / 2"
Galv. Steel/PVC
115'
0-90'/0-95'
95-115'
882.97??
BMW-3
6" / 2"
Galv. Steel/PVC
143'
0-11070-123
123-143'
862.12??
BMW-4
6" / 2"
Galv. Steel/PVC
100'
0-7170-80'
80-100'
859.81??
Well construction summary Page 1 of 3 Revised: 12/6/00

Identification I Diameter
SVMP-1
2"
SVMP-2
2"
SVMP-3
2"
SVMP-4
2"
SVMP-5
2"
SVMP-6
2"
SVMP-7
2"
SVMP-8
2"
SVMP-9
2"
-
SVMP-10
2"
SVMP-11
2"
SVMP-12
2"
PT -IS
1"
PT-2S
1"
PT-3S
1"
PT-4S
1"
PT-5S
1"
PT-1 D
2"
PT-2D
2"
PT-3D
2"
PT-4D
2"
PT-5D
2"
HVDP-1
4"
HVDP-2 '
4"
HVDP-3
4"
HVDP-4
4"
HVDP-5
4"
HVDP-6
4"
HVDP-7
4"
HVDP-8
4"
HVDP-9
4"
HVDP-10
4"
! I
HVDP-11
4"
HVDP-12
4"
HVDP-13
4"
HVDP-14
4"
HVDP-15
4"
HVDP-16
4"
HVDP-17
4"
HVDP-18
4"
HVDP-19
4"
HVDP-20
4"
HVDP-21
4"
HVDP-22
4"
HVDP-23
4"
HVDP-24
4"
- --
HVDP-25
4"
HVDP-26
4"
HVDP-27
4"
HVDP-28
4"
--
HVDP-29
4"
Table 1
Well Construction Summmary
W.P. Ballard and Downgradient Properties
Greensboro, North Carolina
Well
Material
Total
Depth
Cased
Interval
Screened
Interval
Top of Casing
Elevation
Notes
PVC
12'
0-2'
2-12'
883.63
Soil vapor monitoring point
PVC
12'
0-2'
2-12'
883.79
Soil vapor monitoring point
PVC
12'
0-2'
2-12'
883.83
Soil vapor monitoring point
PVC
12'
0-2'
2-12'
882.9
Soil vapor monitoring point
PVC
12'
0-2'
2-12'
883.37
Soil vapor monitoring point
PVC
12'
0-2'
2-12'
883.44
Soil vapor monitoring point
PVC
12'
0-2'
2-12'
883.04
Soil vapor monitoring point
PVC
12'
0-2'
2-12'
883.03
Soil vapor monitoring point
PVC
12'
0-2'
2-12'
882.75
Soil vapor monitoring point
PVC
12'
0-2'
2-12'
882.44
Soil vapor monitoring point
PVC
12'
0-2'
2-12'
882.44
Soil vapor monitoring point
PVC
12'
0-2'
2-12'
882.71
Soil vapor monitoring point
PVC
25'
0-5'
5-25'
882.69
Wells installed for 9/97 pilot test
PVC
22.2'
0-2.2'
2.2-22.2'
882.95
Wells installed for 9/97 pilot test
PVC
25'
0-5'
5-25'
882.59
Wells installed for 9/97 pilot test
PVC
25'
0-5'
5-25'
882.21
Wells installed for 9/97 pilot test
PVC
25'
0-5'
5-25'
882.97
Wells installed for 9/97 pilot test
PVC
65'
0-50'
50-65'
882.70
Wells installed for 9/97 pilot test
PVC
65'
0-50'
50-65'
882.95
Wells installed for 9/97 pilot test
PVC
65'
0-50,
50-65'
882.66
Wells installed for 9/97 pilot test
PVC
65'
0-50'
50-65'
882.41
Wells installed for 9/97 pilot test
PVC
65'
0-50,
50-65'
882.96
Wells installed for 9/97 pilot test
VC/Stainless Ste
75'
0-35'
35-75'
881.84
Remediation system well
VC/Stainless Ste
75'
0-35'
35-75'
882.04
Remediation system well
VC/Stainless Ste
75'
0-35'
35-75'
881.13
Remediation system well
VC/Stainless Ste
75'
0-35'
35-75'
881.37
Remediation system well
VC/Stainless Ste
75'
0-35'
35-75'
880.85
Remediation system well
VC/Stainless Ste
75'
0-35'
35-75'
881.92
Remediation system well
VC/Stainless Ste
75'
0-35'
35-75'
882.21
Remediation system well
VC/Stainless Ste
75'
0-35'
35-75'
882.4
Remediation system well
VC/Stainless Ste
75'
0-35'
35-75'
882.63
Remediation system well
VC/Stainless Ste
75'
0-35'
35-75'
881.65
Remediation system well
VC/Stainless Ste
75'
0-35'
35-75'
881.41
Remediation system well
VC/Stainless Ste
75'
0-35'
35-75'
881.98
Remediation system well
PVC
65'
0-50'
50-65'
882.81
Formerly EW-3
PVC
64'
0-49'
49-64'
882.57
Formerly EW-1
VC/Stainless Ste
75'
0-35'
35-75'
881.24
Remediation system well
VC/Stainless Ste
75'
0-35'
35-75'
879.73
Remediation system well
VC/Stainless Ste
75'
0-35'
35-75'
878.89
Remediation system well
VC/Stainless Ste
75'
0-35'
35-75'
873.99
Remediation system well
VC/Stainless Ste
75'
0-35'
35-75'
875.83
Remediation system well
VC/Stainless Ste
75'
0-35'
35-75'
872.844
Remediation system well
VC/Stainless Ste
75'
0-35'
35-75'
871.23
Remediation system well
VC/Stainless Ste
75'
0-35'
35-75'
870.56
Remediation system well
VC/Stainless Ste
74'
0-34'
34-74'
871.7
Remediation system well
VC/Stainless Ste
75'
0-35'
35-75'
872.56
Remediation system well
VC/Stainless Ste
75'
0-35'
35-75'
872.37
Remediation system well
VC/Stainless Ste
75'
0-35'
35-75'
873.48
Remediation system well
VC/Stainless Ste
75'
0-35'
35-75'
875.39
Remediation system well
VC/Stainless Ste
67'
0-27'
27-67'
876.17
Remediation system well
VC/Stainless Ste
75'
1 0-35'
35-75'
878.38
Remediation system well
Well construction summary
Page 2 of 3
Revised: 12/6100

Table 1
Well Construction Summmary
W.P. Ballard and Downgradient Properties
Greensboro, North Carolina
Well
Identification
Casing
Diameter
Well
Material
Total
Depth
Cased
Interval
Screened
Interval
Top of Casing
Elevation
Notes
SVE-1
4"
PVC
40'
0-7'
7-40'
881.4
Remediation system well
SVE-2
4"
PVC
40'
0-7'
7-40'
881.97
Remediation system well
SVE-3
4"
PVC
40'
0-7'
7-40'
881.96
Remediation system well
SVE-4
4"
PVC
40'
0-7'
7-40'
881.21
Remediation system well
SVE-5
4"
PVC
40'
0-7'
7-40'
881.98
Remediation system well
SVE-6
4"
PVC
40'
0-7'
7-40'
882.67
Remediation system well
SVE-7
4"
PVC
40'
0-7'
7-40'
883.39
Remediation system well
SVE-8
4"
PVC
40'
0-7'
7-40'
881.94
Formerly EW-4
SVE-9
4"
PVC
40'
0-7'
7-40'
881.54
Formerly EW-2
SVE-10
4"
PVC
40'
0-7'
7-40'
879.25
Remediation system well
SVE-11
4"
PVC
40'
0-7'
7-40'
875.99
Remediation system well
SVE-12
4"
PVC
40'
0-7'
7-40'
878.56
Remediation system well
SVE-13
4"
PVC
40'
0-7'
7-40'
876.26
Remediation system well
SVE-14
4"
PVC
40'
0-7'
7-40'
881.51
Remediation system well
AIW-1
2"
PVC
65'
0-55'
55-65'
881.51
Remediation system well
AIW-2
2"
PVC
65'
0-55'
55-65'
881.65
Remediation system well
AIW-3
2"
PVC
65'
0-55'
55-65'
882.47
Remediation system well
AIW-4
2"
PVC
65'
0-55'
55-65'
881.3
Remediation system well
AIW-5
2"
PVC
65'
0-55'
55-65'
881.64
Remediation system well
AIW-6
2"
PVC
65'
0-55'
55-65'
877.81
Remediation system well
AIW-7
2"
PVC
65'
0-55'
55-65'
871.55
Remediation system well
AIW-8
2"
PVC
65'
0-55'
55-65'
873.2
Remediation system well
AIW-9
2"
PVC
65' 1
0-55'
55-65'
875.32
Remediation system well
Well construction summary Page 3 of 3 Revised: 1216/00

Table 2
Summary of Groundwater Gauging and Field Monitoring Data
W.P. Ballard and Downgradient Properties
Greensboro, North Carolina
Well
Identification
Date
Top of Casing
Elevation
(ft)
Depth to
Water
(ft)
Water Table
Elevation
(ft)
pH
(S.U.)
Specific
Cond.
(US/cm)
Dissolved
Oxygen
(mg/L)
Temp.
CC)
Oxidation
Reduction
Potential
(mV)
Color
MW-1
11/30/98
881.03
16.05
864.98
5.01
51
2.00
19.0
117
10/22/99
881.03
9.50
871.53
5.40
68
3.92
22.0
308
03/22/00
881.03
10.51
870.52
4.90
5.00
1.10
17.9
354
Clear
06/22/00
881.03
12.33
868.70
5.30
6.00
2.60
19.6
233
Clear
09/06/00
881.03
8.97
872.06
4.80
0.063
0.91
21.6
268
NG
MW-2
11/30/98
882.43
16.70
865.73
5.70
150
3.00
17.7
72
10/22/99
882.43
8.97
873.46
6.76
165
5.44
16.9
260
03/22/00
882.43
10.12
872.31
6.60
11.00
1.20
15.5
119
Clear
O6/22/00
882.43
12.40
870.03
6.40
25.00
4.60
19.8
132
Cloudy
09/07/00
882.43
9.42
873.01
6.40
0.13
1.05
22.6
152
NG
MW-3
11/30/98
883.10
17.40
865.70
4.90
35
4.60
18.0
119
10/22/99
883.10
12.94
870.16
6.44
79
4.51
20.3
245
03/23/00
883.10
13.06
870.04
4.50
4.00
4.10
17.6
378
Clear
O6/22/00
883.10
13.57
869.53
5.16
5.00
9.80
23.2
386
Cloudy
09/08/00
883.10
12.87
870.23
4.79
4.60
4.87
21.7
511
NG
09/14/00
883.10
12.93
870.17
4.79
4.6
4.87
21.7
511
Purple
MW-4
11/30/98
882.33
17.50
864.83
5.50
95
2.10
19.0
88
10/22/99
882.33
12.19
870.14
5.41
98
3.96
18.9
304
03/23/00
882.33
13.49
868.84
5.10
9.00
2.10
17.2
289
Clear
O6/22/00
882.33
13.18
869.15
5.68
33.00
4.50
21.6
181
Cloudy
09/07/00
882.33
11.76
870.57
5.80
0.356
2.89
24.1
115
Brownish
MW-5
11/30/98
883.47
18.70
864.77
5.40
19
5.90
19.0
88
10/22/99
883.47
15.64
867.83
5.73
29
4.67
15.7
292
03/22/00
883.47
16.10
867.37
5.00
2.00
6.40
19.5
358
Clear
O6/22/00
883.47
15.75
867.72
5.18
3.00
6.20
24.6
246
Gray, Silly
09/07/00
883.47
16.08
867.39
4.98
2.5
6.04
22.5
258
NG
MW-6
11/30/98
884.33
18.75
865.58
5.50
31
4.90
18.0
85
10/22/99
884.33
14.65
869.68
5.70
39
4.95
13.6
305
03/20/00
884.33
15.33
869.00
5.30
3
5.40
18.2
306
06/22/00
884.33
NG
NG
NG
NG
NG
NG
NG
NG
09/06/00
884.33
13.00
871.33
5.16
3.4
5.68
22.4
210
NG
historic h2o elevation.xis 1 of 11 Revised 11/28/00

Table 2
Summary of Groundwater Gauging and Field Monitoring Data
W.P. Ballard and Downgradient Properties
Greensboro, North Carolina
Well
Identification
Date
Top of Casing
Elevation
(ft)
Depth to
Water
(ft)
Water Table
Elevation
(ft)
pH
(S.U.)
Specific
Cond.
(US/cm)
Dissolved
Oxygen
(mg/L)
Temp.
(°C)
Oxidation
Reduction
Potential
(mV)
Color
MW-7
11/30/98
882.59
16.90
865.69
5.60
56
2.00
19.1
81
10/22/99
882.59
7.65
874.94
5.63
84
4.25
20.3
270
03/20/00
882.59
8.05
874.54
4.50
4
5.40
16.2
326
O6/22/00
882.59
NG
NG
NG
NG
NG
NG
NG
NG
09/06/00
882.59
7.00
875.59
4.90
0.058
0.78
20.4
232
Brown -Orange
MW-8
11/30/98
883.03
17.66
865.37
4.80
37
1.82
19.8
126
10/22/99
883.03
12.85 -
870.18
4.99
46
3.32
19.9
328
03/20/00
883.03
12.90
870.13
4.60
4
0.70
18.4
377
O6/22/00
883.03
NG
NG
NG
NG
NG
NG
NG
NG
09/06/00
883.03
11.52
871.51
4.30
0.046
2.07
23.6
336
NG
MW-9
11/30/98
880.43
17.84
862.59
5.73
60
4.08
20.0
76
10/22/99
880.43
11.65
868.78
5.28
44
4.43
21.8
307
03/20/00
880.43
12.75
.867.68
4.80
4
2.80
20.0
346
O6/22/00
880.43
NG
NG
NG
NG
NG
NG
NG
NG
09/06/00
880.43
11.75
868.68
4.77
0.038
3.05
24.5
236
NG
MW-10
11/30/98
882.42
22.60
859.82
5.70
17
5.50
19.0
66
10/22/99
882.42
18.73
863.69
5.52
20
5.38
18.8
314
03/20/00
882.42
19.03
863.39
4.90
2
7.50
20.8
264
O6/22/00
882.42
NG
NG
NG
NG
NG
NG
NG
NG
09/06/00
882.42
19.25
863.17
4.51
1.9
6.81
25.0
267
Orange -brown
MW-11
11/30/98
874.71
19.03
855.68
6.30
47
4.10
18.6
45
10/22/99
874.71
14.00
860.71
7.80
580
7.03
19.6
195
03/20/00
874.71
15.33
859.38
5.30
5
4.00
19.6
329
O6/22/00
874.71
NG
NG
NG
NG
NG
NG
NG
NG
09/06/00
874.71
13.45
861.26
5.14
0.053
4.38
24.0
284
NG
MW-12
11/30/98
862.15
11.50
850.65
5.80
164
3.90
19.0
68
10/22/99
862.15
8.68
853.47
6.41
198
4.87
20.0
225
03/20/00
862.15
9.10
853.05
5.99
0.144
3.70
17.9
162
O6/22/00
862.15
NG
NG
NG
NG
NG
NG
NG
NG
09/06/00
862.15
8.70
853.45
5.40
17.4
3.81
25.1
178
Light brown
historic h2o elevation.xls 2 of 11 Revised 11/28/00

Table 2
Summary of Groundwater Gauging and Field Monitoring Data
W.P. Ballard and Downgradient Properties
Greensboro, North Carolina
Well
Identification
Date
Top of Casing
Elevation
(ft)
Depth to
Water
(ft) .
Water Table
Elevation
(ft)
pH
(S.U.)
Specific
Cond.
(US/cm)
Dissolved
Oxygen
(mg/L)
Temp.
(°C)
Oxidation
Reduction
Potential
(mv)
Color
MW-13
11/30/98
863.77
7.31
856.46
7.10
420
NS
15.4
83
10/22/99
863.77
7.06
856.71
7.00
80
6.40
15.0.
279
03/20/00
863.77
6.68
857.09
6.41
0.168
6.40
15.9
132
O6/22/00
863.77
NG
NG
NG
NG
NG
NG
NG
NG
09/06/00
863.77
6.98
856.79
5.83
9.8
5.96
22.8
209
NG
MW-14
11/30/98
884.36
19.78
864.58
7.70
280
NS
15.2
70
10/22/99 -
' 884.36
NG
-
NS
NS
NS
NS
NS
03/20/00
884.36
18.95
865.41
6.60
67
4.50
16.6
NG
06/22/00
884.36
NG
NG
NG
NG
NG
NG
NG
NG
09/06/00
884.36
20.16
864.20
4.38
4.5
4.15
21.2
333
NG
MW-15
11/30/98
872.10
16.58
855.52
5.60
57
3.99
19.0
78
10/22/99
872.10
14.75
857.35
5.87
50
4.39
18.4
254
03/20/00
872.10
13.87
858.23
4.64
0.041
5.84
21.3
269
O6/22/00
872.10
NG
NG
NG
NG
NG
NG
NG
NG
09/06/00
872.10
14.62
857.48
5.32
0.065
6.39
26.9
177
Orange
MW-17
11/30/98
861.43
6.45
854.98
6.10
79
5.80
19.0
26
10/22/99
861.43
5.26
856.17
7.00
90
5.80
16.7
303
03/20/00
861.43
6.36
855.07
5.18
0.08
8.60
20.7
153
O6/22/00
861.43
NG
NG
NG
NG
NG
NG
NG
NG
09/06/00
861.43
5.40
856.03
6.52
8.5
4.90
20.1
218
NG
MW-18
11/30/98
862.26
12.15
850.11
6.01
82
3.60
18.3
60
10/22/99
862.26
10.35
851.91
6.21
100
5.03
15.5
251
03/20/00
862.26
10.14
852.12
5.87
0.085
2.90
18.3
169
06/22/00
862.26
NG
NG
NG
NG
NG
NG
NG
NG
09/06/00
862.26
10.51
851.75
5.23
8.9
3.02
21.5
305
NG
MW-20
11/30/98
866.15
22.55
843.60
6.30
154
NS
17.6
126
10/22/99
866.15
22.99
843.16
5.77
150
4.77
17.1
344
03/20/00
866.15
22.97
843.18
5.79
0.149
3.40
18.6
157
O6/22/00
866.15
NG
NG
NG
NG
NG
NG
NG
NG
09/06/00
866.15
22.91
843.24
5.20
15.4
2.67
23.2
241
NG
historic h2o elevation.xis 3 of 11 Revised 11/28/00

Table 2
Summary of Groundwater Gauging and Field Monitoring Data
W.P. Ballard and Downgradient Properties
Greensboro, North Carolina
Well
Identification
Date
Top of Casing
Elevation
(ft)
Depth to .
Water
(ft)
Water Table
Elevation
(ft)
pH
(S.U.)
Specific
Cond.
(US/cm)
Dissolved
Oxygen
(mg/L)
Temp.
(°C)
Oxidation
Reduction
Potential
(mV)
Color
MW-21
11/30/98
866.12
29.44
836.68
6.10
63
5.30
17.0
50
10/22/99
866.12
28.44
837.68
6.19
70
5.18
17.2
335
03/20/00
866.12
27.98
838.14
5.90
0.56
5.00
19.5
150
O6/22/00
866.12
NG
NG
NG
NG
NG
NG
NG
NG
09/06/00
866.12
28.82
837.30
5.17
6.3
4.92
20.7
258
NG
MW-22
11/30/98
861.83
10.80
851.03
6.66
100
5.50
16.1
18
10/22/99
861.83
9.57
852.26
7.00
110
5.90
16.8
236
03/20/00
861.83
9.58
852.25
6.40
10
5.30
16.8
218
06/22/00
861.83
NG
NG
NG
NG
NG
NG
NG
NG
09/06/00
861.83
10.25
851.58
6.24
0.102
7.59
21.5
69
Silty
MW-23
11/30/98
861.15
24.10
837.05
6.20
598
1.60
16.9
43
10/22/99
861.15
24.13
837.02
6.70
760
4.90
18.4
-87
03/20/00
861.15
24.22
836.93
6.20
60
0.80
18.4
-74
O6/22100
861.15
NG
NG
NG
NG
NG
NG
NG
NG
09/06/00
861.15
24.29
836.86
6.08
0.605
6.51
23.1
-98
Brown, silty
MW-27
11/30/98
879.80
19.85
859.95
4.70
235
2.50
20.0
130
10/22/99
879.80
15.34
864.46
5.05
232
3.54
20.5
299
03/20/00
879.80
NG
--
NG
NG
NG
NG
NG
O6/22/00
879.80
NG
NG
NG
NG
NG
NG
NG
NG
09/06/00
879.80
15.26
864.54
4.92
0.212
12.54
24.4
294
NG
MW-28
11/30/98
881.23
19.40
861.83
4.80
25
2.10
20.0
125
10/22/99
881.23
13.42
867.81
5.22
37
3.44
20.9
291
03/20/00
881.23
14.92
866.31
5.10
3
6.30
18.4
311
O6/22/00
881.23
NG
NG
NG
NG
NG
NG
NG
NG
09/06/00
881.23
11.68
869.55
4.76
0.039
6.45
24.0
215
NG
LMP-1
01/21/99
873.50
12.83
860.67
6.80
318
NS
19.3
129
10/22/99
873.50
11.39
862.11
6.60
330
5.28
20.4
223
03/20/00
873.50
13.35
860.15
5.22
0.31
1.34
21.2
174
O6/22/00
873.50
NG
NG
NG
NG
NG
NG
NG
NG
09/06/00
873.50
12.00
861.50
5.83
0.32
1 12.35
24.0
161
NG
historic h2o elevation.xls 4 of 11 Revised 11/28/00

I
Table 2
Summary of Groundwater Gauging and Field Monitoring Data
W.P. Ballard and Downgradient Properties
Greensboro, North Carolina
Well
Identification
Date
Top of Casing
Elevation
- (ft)
Depth to
Water
(ft)
Water Table
Elevation
(ft)
pH
(S.U.)
Specific
Cond.
(US/cm)
Dissolved
Oxygen
(mg/L)
Temp.
(°C)
Oxidation
Reduction
Potential
(mV)
Color
LMP-2
01/21/99
871.41
11.52
859.89
6.70
79
NS
18.7
128
10/22/99
871.41
11.32
860.09
6.36
111
4.99
20.4
228
03/20/00
871.41
11.70
859.71
5.50
0.098
5.70
23.0
144
O6/22/00
871.41
NG
NG
NG
NG
NG
NG
NG
NG
09/06/00
871.41
12.33
859.08
5.53
0.101
2.58
23.6
207
NG
DW-1
11/30/98
882.31
17.10
865.21
6.20
178
1.70
17.4
47
10/22/99
882.31
10.72
871.59
7.01
89
4.13
17.3 _
242
03/20/00
882.31
11.25
871.06
6.10
7
2.50
15.9
207
O6/22/00
882.31
NG
NG
NG
NG
NG
NG
NG
NG
09/06/00
882.31
9.66
872.65
5.70
0.07
2.57
19.0
159
NG
DW-2
11/30/98
881.12
16.35
864.77
5.50
83
4.60
19.0
88
10/22/99
881.12
14.45
866.67
6.71
1
4.89
22.0
226
03/22/00
881.12
11.38
869.74
6.10
9.00
1.90
17.8
176
NG
06/22/00
881.12
NG
NG
NG
NG
NG
NG
NG
NG
09/07/00
881.12 .
9.66
871.46
5.90
0.097
2.56
18.4
134
NG
DW-3
11/30/98
882.59
18.30
864.29
5.50
61
5.00
18.0
93
10/22/99
882.59
12.35
870.24
5.23
43
4.17
16.5
317
03/23/00
882.59
13.90
868.69
5.80
6.00
4.40
17.1
224
Clear
06/22/00
882.59
14.11
868.48
5.58
34.00
7.20
23.0
693
Purple
09/07/00
882.59
14.00
868.59
4.92
22.9
4.95
20.9
663
NG
DW-4-
11/30/98
883.69
18.87
864.82
5.60
57
.4.40
20.0
80
10/22/99
883.69
18.35
865.34
6.40
61
4.58
18.0
243
03/22/00
883.69
16.00
867.69
5.90
6.00
4.40
19.0
254
Clear
06/22/00
883.69
15.94
867.75
6.01
8.00
4.30
21.7
632
Purple
09/14/00
883.69
16.11
867.58
5.59
0.499
7.43
21.3
768
Deep Purple
DW-5
11/30/98
872.80
17.39
855.41
6.10
114
3.40
20.0
47
10/22/99
872.80
17.21
855.59
6.58
120
3.79
19.7
208
03/20/00
872.80
15.81
856.99
5.60
0.11
4.80
19.4
179
06/22/00
872.80
NG
NG
NG
NG
NG
NG
NG
NG
09/06/00
872.80
16.42
856.38
5.89
10.6
3.94
23.8
142
NG
historic h2o elevation.xls 5 of 11 Revised 11/28/00

Table 2
Summary of Groundwater Gauging and Field Monitoring Data
W.P. Ballard and Downgradient Properties
Greensboro, North Carolina
Well
Identification
Date
Top of Casing
Elevation
(ft)
Depth to
Water
(ft)
Water Table
Elevation
(ft)
pH
(S.U.)
Specific
Cond.
(US/cm)
Dissolved
Oxygen
(mg/L)
Temp.
CC)
Oxidation
Reduction
Potential
(mV)
Color
DW-7
11/30/98
862.17
9.91
852.26
6.60
172
3.30
21.0
27
10/22/99
862.17
7.91
854.26
7.52
187
6.02
20.3
176
03/20/00
862.17
9.00 .
853.17
6.79
0.164
5.30
17.3
126
06/22/00
862.17
NG
NG
NG
NG
NG
NG
NG
NG
09/06/00
862.17
7.40
854.77
6.33
18.6
3.48
18.6
34-
Olive -brown
DW-8
11/30/98
861.44
5.77
855.67
6.50
84
4.60
18.6
29
10/22/99
861.44
4.02
857.42
6.81
98
8.62
17.3
258
03/20/00
861.44
4.02
857.42
6.19
210
5.10
16.5
NG
06/22/00
861.44
NG
NG
NG
NG
NG
NG
NG
NG
09/06/00
861.44
4.35
857.09
4.62
8.4
5.72
20.2
215
NG
DW-9
11/30/98
NS
16.35
NS
7.00
1 170
0.94
17.9
21
10/22/99
Well destroyed during construction
DW-11
11/30/98
NS I
22.23 I
NS I
8.30 I
138 I
4.60 I
16.4 I
-84
10/22/99
Well destroyed during construction
DW-12
11/30/98
845.45
14.38
831.07
7.34
110
4.30
19.0
-41
10/22/99
845.45
12.82
832.63
6.58
100
4.60
16.3
189
03/20/00
845.45
12.56
832.89
5.30
10
4.00
17.9
290
06/22/00
845.45
NG,
NG
NG
NG
NG
NG
NG
NG
09/06/00
845.45
12.87
832.58
5.83
9.1
3.85
22.0
191
NG
DW-13
10/22/99
861.10
11.91
849.19
7.17
150
4.60
17.8
165
03/20/00
861.10
10.56
850.54
5.80
12
4.40
16.4
232
06/22/00
861.10
NG
NG
NG
NG
NG
NG
NG
NG
09/06/00
861.10
10.56
850.54
6.21
0.108
6.14
19.6
102
Silty
DW-14
10/22/99
860.06
22.52
837.54
6.82
160
4.30
17.2
-258
03/20/00
860.06
21.31
838.75
5.90
15
3.40
18.0
59
O6/22/00
860.06
NG
NG
NG
NG
NG
NG
NG
NG
09/06/00
860.06
22.46
837.60
9.23
0.184
1.90
21.9
-121
Brown, silty
DW-15
10/22/99
861.20
24.91
836.29
7.30
180
4.24
19.5
-345
03/20/00
861.20
23.56
837.64
5.80
15
2.60
18.1
206
O6/22/00
861.20
NG
NG
NG
NG
NG
NG
NG
NG
09/06/00
861.20
24.86
836.34
6.25
0.14
3.69
21.9
109
Brown, silty
historic h2o elevation.xls 6 of 11 Revised 11/28/00

Table 2
Summary of Groundwater Gauging and Field Monitoring Data
W.P. Ballard and Downgradient Properties
Greensboro, North Carolina
Well
Identification
Date
Top of Casing
Elevation
(ft)
Depth to
Water
(ft)
Water Table
Elevation
(ft)
pH
(S.U.)
Specific
Cond.
(US/cm)
Dissolved
Oxygen
(mg/L)
Temp.
(°C)
Oxidation
Reduction
Potential
(mV)
Color
DMP-1
01/21/99
870.83
13.61
857.22
5.80
643
NS
18.0
127
10/22/99
870.83
13.82
857.01
6.36
569
4.18
19.3
252
03/20/00
870.83
13.44
857.39
5.29
0.46
1.82
19.7
197
O6/22/00
870.83
NG
NG
NG
NG
NG
NG
NG
NG
09/06/00
870.83
13.21
857.62
5.84
38.7
1.74
23.8
173
NG
DMP-2
01/21/99
872.13
11.85
860.28
7.60
187
NS
17.8
107
10/22/99
872.13
11.71
860.42
7.02
163
4.51
20.3
207
03/20/00
872.13
11.45
860.68
6.32
0.14
3.60
19.5
170
O6/22/00
872.13
NG
NG
NG
NG
NG
NG
NG
NG
09/06/00
872.13
11.86
860.27
6.15
0.123
5.01
21.1
154
Brown, silty
DMP-3
01/21/99
862.18
8.00
854.18
7.10
151
NS
16.3
86
10/22/99
862.18
7.64
854.54
6.98
100
5.73
17.1
188
03/20/00
862.18
7.70
854.48
6.54
95
4.80
20.9
72
O6/22/00
862.18
NG
NG
NG
NG
NG
NG
NG
NG
09/06/00
862.18
7.63
854.55
6.16
10.5
5.88
22.7
145
Brown, silly
DMP-4
01/21/99
862.25
7.11
855.14
7.10
152
NS
15.8
85
10/22/99
862.25
7.13
855.12
7.13
90
5.89
15.8
281
03/20/00
862.25
7.03
855.22
6.26
80
4.90
17.0
NG
O6/22/00
862.25
NG
NG
NG.
NG
NG
NG
NG
NG
09/06/00
862.25
6.51
855.74
5.87
0.089
6.26
18.8
114
Silty
BMW-1
10/22/99
882.45
DRY
NG
DRY
DRY
DRY
DRY
DRY
03/23/00
882.45
18.35
864.10
11.50
11.00
0.40
17.7
560
Clear
06/22/00
882.45
18.30
864.15
11.08
12.00
3.70
22.9
-246
Clear
09/08/00
882.45
32.23
850.22
11.02
83.1
2.13
18.9
-463
NG
BMW-2
10/22/99
882.97
13.10
869.87
6.80
119
5.08
20.7
199
03/23/00
882.97
14.09
868.88
5.80
11.00
3.60
17.6
-40
Clear
06/22/00
882.97
14.19
868.78
6.34
11.00
6.70
19.9
158
Clear
09/07/00
882.97
13.33
869.64
6.16
11.8
4.30
18.7
-31
NG
historic h2o elevation.xls 7 of 11 Revised 11/28/00

Table 2
Summary of Groundwater Gauging and Field Monitoring Data
W.P. Ballard and Downgradient Properties
Greensboro, North Carolina
Well
Identification
Date
Top of Casing
Elevation
(ft)
Depth to
Water
(ft)
Water Table
Elevation
(ft)
pH
(S.U.)
Specific
Cond.
(US/cm)
Dissolved
Oxygen
(mg/L)
Temp.
(°C)
Oxidation
Reduction
Potential
(mV)
Color
BMW-3
10/22/99
862.12
11.81
850.31
7.43
320
6.48
18.7
173
03/20/00
862.12
11.50
850.62
8.17
0.265
0.60
21.3
-232
06/22/00
862.12
NG
NG
NG
NG
NG
NG
NG
NG
09/06/00
862.12
9.52
852.60
7.14
42.6
1.76
22.1
-203
Sulfur odor
BMW-4
10/22/99
860.08
22.45
837.63
6.80
530
5.04
17.7
220
03/20/00
860.08
21.22
838.86
5.50
11
4.90
17.0
234
O6/22/00
860.08
NG
NG
NG
NG
NG
NG
NG
NG
09/06/00
860.08
22.71
837.37
7.33
0.246
1.90
21.5
-192
Brown, silty
PT-1S
03/23/00
882.69
NG
NG
NG
NG
NG _
NG
NG
NG
06/22/00
882.69
17.60
865.09
5.19
3.00
8.80
29.4
226
Brownish, Silty
09/12/00
882.69
17.82
864.87
4.97
2.3
7.59
23.7
337
Brown, silty
PT-2S
03/23/00
882.95
15.30
867.65
5.50
3.20
9.10
19.7
244
NG
06/22/00
882.95
16.55
866.40
NG
NG
NG
NG
NG
Unable to Remove Water
09/06/00
882.95
16.87
866.08
NG
NG
NG
NG
NG
Well Not Sampled
PT-3S
03/23/00
882.59
18.24
864.35
5.20
2.00
6.80
19.7
280
NG
06/22/00
882.59
19.21
863.38
5.38
3.00
7.00
27.3
217
Brownish orange
09/12/00
882.59
18.05
864.54
5.13
2.8
7.24
23.2
325
Brown, silty
PT-4S
03/23/00
882.21
19.10
863.11
4.60
9.00
4.80
15.4
320
NG
O6/22/00
882.21
19.17
863.04
4.94
9.00
5.50
26.3
285
Brownish orange .
09/12/00
882.21
17.96
864.25
5.69
8.3
5.37
27.5
313
Brown, silty
PT-5S
03/23/00
882.97
16.83
866.14
5.15
1.80
8.96
19.2
274
NG
06/22/00
882.97
16.87
866.10
5.39
4.00
6.60
28.9
236
Orange, Turbid
09/12/00
882.97
16.66
866.31
4.90
8.3
8.26
21.5
356
Brown, silty
PT-1 D
03/23/00
882.70
17.78
864.92
5.28
7.00
5.70
21.3
221
NG
06/22/00
882.70
18.34
864.36
6.20
7.00
6.80
20.6
179
Clear
09/08/00
882.70
17.70
865.00
6.00
6.7
5.48
22.4
297
NG
historic h2o elevation.xls 8 of 11 Revised 11/28/00

Table 2
Summary of Groundwater Gauging and Field Monitoring Data
W.P. Ballard and Downgradient Properties
Greensboro, North Carolina
Well
Identification
Date
Top of Casing
Elevation
(ft)
Depth to
Water
(ft)
Water Table
Elevation
(ft)
pH
(S.U.)
Specific
Cond.
(US/cm)
Dissolved
Oxygen
(mg/L)
Temp.
(°C)
Oxidation
Reduction
Potential
(mV)
Color
PT-2D
03/23/00
882.95
17.28
865.67
6.27
7.20
5.52
19.1
229
NG
06/22/00
882.95
17.41
865.54
6.28
8.60
5.60
22.1
126
Slightly Cloudy
09/08/00
882.95
16.77
866.18
6.00
0.078
4.46
23.3
159
NG
PT-3D
03/23/00
882.66
18.24
864.42
5.90
6.10
5.10
20.5
185
NG
06/22/00
882.66
18.25
864.41
6.04
7.00
9.50
23.2
190
Brownish orange, Silty
09/09/00
882.66
17.71
864.95
5.88
5.7
9.26
23.9
227
NG
PT-4D
03/23/00
882.41
18.40
864.01
5.00
8.00
1.12
19.6
238
NG
06/22/00
882.41
18.15
864.26
5.70
9.00
3.00
23.5
217
Cloudy,Silty Brown
09/09/00
882.41
17.63
864.78
5.40
11.8
5.02
22.7
204
NG
PT-5D
03/23/00
882.96
16.41
866.55
5.92
6.30
2.89
19.3
258
NG
6/22/00
882.96
16.56
866.40
5.89
7.00
1.30
21.5
146
Slightly Cloudy
918/00
882.96
16.40
866.56
5.75
6.9
2.29
22.7
204
NG
HVDP-1
09/06/00
881.84
9.30
872.54
6.30
0.194
5.66
19.1
182
NG
HVDP-2
09/06/00
882.04
9.65
872.39
5.40
0.066
3.66
19.3
232
NG
HVDP-3
09/06/00.
881.13
9.91
871.22
5.47
6.3
2.55
21.2
682
Purple
HVDP-4
09/06/00
881.37
13.35
868.02
5.90
0.126
1.23
21.8
121
NG
HVDP-5
09/06/00
880.85
12.90
867.95
4.80
0.034
1.86
23.3
198
NG
HVDP-6
09/06/00
881.92
12.36
869.56
4.20
0.116
3.85
20.5
321
NG
HVDP-7
09/06/00
882.21
13.51
868.70
5.23
6
5.12
22.6
619
NG
HVDP-8
09/06/00
882.40
13.72
.868.68
6.42
26.9
2.84
21.3
243
NG
HVDP-9
09/06/00
882.63
15.27
867.36
5.60
5.5
5.28
20.9
580
NG
HVDP-10
09/06/00
881.65
14.78
866.87
5.30
0.044
3.33
21.7
195
NG
historic h2o elevation.xls 9 of 11 Revised 11/28/00

Table 2
Summary of Groundwater Gauging and Field Monitoring Data
W.P. Ballard and Downgradient Properties
Greensboro, North Carolina
Well
Identification
Date
Top of Casing
Elevation
(ft)
Depth to .
Water
(ft)
Water Table
Elevation
(ft)
pH
(S.U.)
Specific
Cond.
(US/cm)
Dissolved
Oxygen
(mg/L)
Temp.
(°C)
Oxidation
Reduction
Potential
(mV)
Color
HVDP-11
09/06/00
881.41
15.80
865.61
5.63
5.7
3.15
22.7
280
NG
HVDP-12
09/06/00
881.98
14.47
867.51
5.81
6.5
1.89
22.7
166
NG
HVDP13
03/23/00
882.84
17.16
865.68
6.10
7.10
2.80
18.9
270
NG
(EW-4)
06/22/00
882.84
15.89
866.95
5.64
4.00
4.90
25.5
148
Light Orange
09/06/00
882.81
16.25
866.56
6.06
7.8
2.33
21.4
333
NG
HVDP14
03/23/00
882.57
18.40
864.17
5.00
4.00
5.10
21.0
250
NG
(EW-1)
06/22/00
882.57
19.50
863.07
5.97
6.00
6.30
21.8
193
Clear
09/09/00
882.57
16.92
865.65
6.29
5.30
3.76
22.9
578
NG
HVDP-15
09/06/00
881.24
17.00
864.24
5.48
5.1
2.98
22.1
208
NG
HVDP-16
09/06/00
879.73
15.19
864.54
5.80
0.123
0.63
23.5
-144
NG
HVDP-17
09/06/00
878.89
15.65
863.24
5.90
0.032
1.47
24.8
81
NG
HVDP-18
09/06/00
873.99
10.28
863.71
6.20
0.196
0.00
20.9
-3
NG
HVDP-19
09/06100
875.83
11.27
864.56
6.00
0.524
0.00
22.0
67
NG
HVDP-20
09/06/00
872.84
9.70
863.14
6.00
0.187
0.00
19.3
41
NG
HVDP-21
09/06/00
871.23
10.21
861.02
5.70
0.275
0.01
23.1
113
NG
HVDP-22
09/06/00
870.56
10.65
859.91
6.30
0.197
0.25
20.5
-86
Sulphur odor
HVDP-23
09/06/00
871.70
11.81
859.89 -
6.00
0.146
1.27
20.6
39
NG
HVDP-24
09/06/00
872.56
13.60
858.96
5.80
0.085
3.60
20.5
111
NG
HVDP-25
09/06/00
872.37
15.43
856.94
5.82
0.083
5.57
22.9
123
NG
HVDP-26
09/06/00
873.48
16.46
857.02
5.08
0.016
2:77
22.6
207
NG
HVDP-27
09/06/00
875.39
16.96
858.43
5.29
0.042
2.67
21.1
14
Sulphur odor
historic h2o elevation.xls 10 of 11 Revised 11/28/00

Table 2
Summary of Groundwater Gauging and Field Monitoring Data
W.P. Ballard and Downgradient Properties
Greensboro, North Carolina
Well
Identification
Date
Top of Casing
Elevation
(ft)
Depth to
Water
(ft)
Water Table
Elevation
(ft)
pH
(S.U.)
Specific
Cond.
(US/cm)
Dissolved
Oxygen
(mg/L)
Temp.
(°C)
Oxidation
Reduction
Potential
(mV)
Color
HVDP-28
09/06/00
876.17
18.29
857.88
5.17
0.02
5.15
22.8
174
NG
HVDP-29
09/06/00
878.38
19.69
858.69
5.29
0.024
8.78
21.6
195
NG
SVE-1
09/06/00
881.40
10.19
871.21
4.80
0.055
3.72
21.2
314
NG
SVE-2
09/06/00
881.97
11.60
870.37
4.80
0.109
3.64
23.6
219
NG
SVE-3
09/06/00
881.96
13.02
868.94
5.40
6.4
2.92
21.6
400
NG
SVE-4
09/06/00
881.21
9.40
871.81
4.60
0.054
4.40
21.5
304
NG
SVE-5
09/06/00
881.98
10.16
871.82
4.90
0.073
5.87
19.9
278
NG
SVE-6
09/06/00
882.67
11.05
871.62
5.58
56.3
7.00
18.4
273
Dark Brown
SVE-7
09/06/00
883.39
12.93
870.46
5.66
7.3
5.36
21.1
462
NG
SVE8
03/23/00
882.81
16.20
866.61
5.30
7.40 -
3.11
21.0
205
NG
(EW-3)
06/22/00
882.81
16.47
866.34
6.20
7.00
4.00
21.9
158
Clear
09/08/00
882.81
16.22
866.59
5.30
3.80
5.24
28.2
198
NG
SVE9
03/23/00
882.56
17.87
864.69
5.38
2.10
7.39
21.2
242
NG
(EW-2)
06/22/00
882.56
17.18
865.38
5.67
3.00
7.80
25.1
190
Cloudy
09/09/00
882.56
16.90
865.66
5.77
2.50
10.32
25.8
249
NG
SVE-10
09/06/00
879.25
14.96
864.29
4.94
0.104
7.22
25.4
190
NG
SVE-11
09/06/00
875.99
12.00
863.99
6.14
1.04
1.96
22.5
-43
NG
SVE-12
09/06/00
878.56
13.75
864.81
5.06
0.743
6.63
23.3
183
NG
SVE-13
09/06/00
876.26
NG
NS
5.08
0.222
7.30 . -
23.8
173
NG
SVE-14
09/06/00
881.51
11.40
870.11
4.77
0.038
3.05
24.5
236
NG
Notes: . NU aenotea parameter not gauges or measurea.
NS denotes TOC elevation not surveyed.
historic h2o elevation.xls 11 ofIll Revised 11/28/00

Table 3
Summary of Sell Vapor Field Monitoring Data
W.P. Ballard and Downgradient Properties
Greensboro, North Carolina
Vapor
Carhon
Carbon
Total VOCa
Percent
Monitoring
Date
Time
Pressure
Temperature
Methane
Dioxide
Oxygen
Monoxide
w/ PID
Chlorine
L.E.L.
Points
(in• tiro
(°C)
Y
•/.
'%
m
m
m
SVMP-1
Baseline
NG
0.00
10.4
0.0
2.0
20.5
NG
1928
0.0
8
4124100
13:22
0.60
NG
0.0
0.5
19.9
0.0
348
0.0
0
4124100
16:22
0.60
18.6
0.0
3.2
10.7
6.0
>2500
0.0
0
4125100
NG
NG
NG
NG
NG
NG
NG
NG
NG
NG
4/26100
10:39
0.00
18.0
0.0
NG
20.8
0.0
83
0.0
0
4127100
11:20
0.10
17.9
0.1
2.9
18.5
0.0.
NG
0.0
2
4/27/00
15:13
0.05
18.8
0.0
2.4
19.1
0.0
NG
0.0
0
4128/00
11:19
0.04
NG
0.0
2.7
19.8
0.0
1750
0.0
0
511/00
11:27
0.02
17.6
0.5
NG
18.9
0.0
1850
0.0
1
5/1100
15:16
0.05
17.5
0.0
NG
19.8
0.0
1770
0.0
0
5/2100
11:08
0.00
73oF
0.0
1.8
19.6
0.0
>2000
0.0
0
512100
13:51
0.01
18.9
0.0
2.5
19.5
0.0
>2000
0.0
0
5/3100
9:51
0.01
19.1
0.0
3.5
18.8
0.0
>2000
0.0
0
513100
14:02
0.02
18.4
0.0
3.3
18.8
0.0
>2000
0.0
0
5/12100
8:44
0.00
22.5 -
0.0
1.1
20.4
0.0
1576
0.0
2
5/15/00
14:45
0.01
24.6
0.1
1.9
19.8
0.0
656
0.0
2
5/17100
11:30
0.00
24.0
0.1
0.8
20.3
0.0
109
0.0
2
619100
10:30
NG
24.2
0.0
0.8
10.5
0.0
786
0.0
0
0/21100
19:09
0.00
NG
0.0
0.0
20.9
0.0
1
0.0
0
8/9100
17:4
NG
NG
0.1
0.6
19.6
NG
137
0.0
2
SVMP-2
Baseline
NG
0.00
16.4
0.0
3.1
- - 20.2
NG
1740
0.0
7
4124/00
13:15
0.00
NG
0.5
4.2
15.8
0.0
227
0.0
10
4124/00
16:35
0.00
_ 10.8
0.0
1.7
19.3
0.0
>2500
0.0
0
4/25/00
16:30
0.40
18.0
1.0
NG
20.1
0.0
NG
0.0
20
4120/00
10:31
0.40
17.4
0.5
NG
19.8
_
0.0
00
0.0
10
4/27/00
11:02
0.00
17.8
0.1
1.9
18.9
0.0
NG
0.0
2
4121100
15:19
0.07
17.4
0.0
1.61
19.1
0.0
NG
0.0
0
4128100
1118
0.04
NG
0.0
1.9
19.8
0.0
884
0.0
0
5/1/00
11:25
0.03
17.4
0.0
NG
19.0
0.0
1050
0.0-
0
5/1/00
15:33
0.04
17.1
0.0
NG
10.5
0.0
1315
0.0
0
512/00
11:11
0.00
- 750F
0.0
2.4
18.0
0.0
1800
0.0
0
5/2100
13:53
0.03
18.2
0.0
2.3
10.9
4.0
1512
0.0
0
513/00
9:57
0.00
19.0
0.0
2.5
18.9
1.0
1750
0.0
0
5/3/00
14:05
0.01
17.8
0.0
2.4
18.8
0.0
1043
0.0
0
5/12100
6:39
0.00
22.0
0.1
1.5
19.5
0.0
1266
0.0
2
'
5115/00
14:46
0.01
24.0
0.1
2.3
19.0
0.0
457
0.0
2
5117/00
11:35
0.00
24.4
0.1
2.0
19.3
0.0
lie
0.0
2
619100
10:34
NG
23.9
0.0
0.0
19.1
0.0
122
0.0
0
6121/00
16:45
0.00
NG
0.0
0.0
20.8
0.0
23
0.0
0
919/00
16:58
NG
NG
0.0
0.0
20.2
NG
34
0.0
0
SVMF-3
Baseline
NG
0.00
16.4
0.0
6.0
16.1
NG
1906
0.0
10
4124/00
13:10
0.00
NG
0.4
3.4
16.5
0.0
125
0.0
B
4124/00
16:40
0.00
18.5
0.4
3.9
16.3 ".
0.0
>2500
0.0
8
4125100
15:56
0.00
18.7
4.0
NG
16.5
0.0
NG
0.0
80
4/26100
10:23
0.10
18.3
0.2
3.7
17.5
0.0
72
0.0
4
4/27100
10:58
0.00
18.1
0.3
3.8
15.7
0.0
NG
0.0
6
4127100
15:24
0.05
18.3
0.3
4.1
15.7
0.0
NG
0.0
6
4128100
11:17
0.04
NG
0.3
3.6
17.9
0.0
1984
0.0
6
5/1100
11:22
0.00
17.7
<0.1
NG
18.4
0.0
627
0.0
1
511/00
15:44
0.02
17.6
�0.1
NG
19.2
0.0
579
0.0
1
5/2100
11:13
0.00
74OF
. 0.0
0.1
20.6
0.0
104
0.0
0
513100
10:01
0.00
19.4
0.0
0.1
20.8
0.0
1955
0.0
0
513100
14:10
0.00
18.4
0.0
0.7
20.2
0.0
426
0.0
0
5/12100
8:34
0.00
22.7
0.1
0.2
20.6
0.0
34
0.0
2
5/15100
14:47
0.00
23.9
0.0
0.5
19.4
0.0
134
0.0
0
5117100
11:40
0.00
25.4
0.1
0.4
20.3
0.0
160
0.0
2
619100
10:38
NG
25.4
0.0
0.9
17.9
0.0
195
0.0
0
6121100
18:21
0.00
NG
0.0
0.0
21.0
.0.0
7
0.0
0
919100 1
16:35 1
0.00 1
NG
0.0
0.4
19.6 1
NG
85
0.0
0
Sod vapor field data summary - 1 of 7 Revised 12/11100

Table 3
Summary of Soil Vapor Field Monitoring Data
W.P. Ballard and Downgradlent Properties
Greensboro, North Carolina -
Vapor
Carbon
Carbon
Total VOCs
Percent
Monitoring
Date
Time
Pressure
Temperature
Methane
Dioxide
Oxygen
Monoxide
w/ PID
Chlorine
L.E.L. '
Points
In. H 0)
VC)
%
%
%
m
m
m
%
SVMP-7
Baseline
NG
0.00
16.4
0.0
4.0
18.5
NG
2470
0.0
10
4/24100
14:50
0.10
17.9
0.0
1.3
19.2
0.0
1792
0.0
0
4124/00
17:07
0.00
17.9
0.2
2.9
17.9-
10.0
>2500
0.0
4
4125100
15:34
0.10
17.1
4.0
NG
20.0
18.0
NG
0.0
80
4126/00
10:53
0,10
17.5
0.2
NG
18.6
35.0
246
0.0
4
4127190
10:26
0.00
17.2
0.2
2.3
10.2
31.0
NG
0.0
4
4127/00
15:48
0.02
10.3
0.2 -
3.0
17.4
31.0
NG
0.0
4
4128100
11:22
0.01
NG
0.2
2.0
19.9
26.0
>2500
0.0
4
511100
11:14
0.03
17.1
0.3
NG
_
17.7 -
37.0
>2500
0.0
5
5/1/00
16:15
0.05
17.2
0.3
NG
18.1
40.0
>2500
0.0
6
512/00
11:27
0.00
22.8
0.2
3.3
17.9
44.0
>2000
0.0
4
5/2100
14:01
0.01
10.2
0.1
3.0 -
18.0 _
40.0
>2000
0.0
2
5/3/00
10:18
0.00
18.0
0.1
3.2
17.9
50.0
>2000
0.0
2
513100
15:05
0.00
17.0
0.1
3.6
17.6
62.0
>2000
0.0
2
5/12/00
7:52
0.00
21.6
0.4
2.4
18.5
5.0
>2000
0.0
8
5115100
14:54
- 0.00
21.7
0.2
2.0
18.9
0.0
>2000
0.0
4
6/14/00
12:00
0.00
25.5
0.5
2.5
18.6
43.0
>2000
0.0
2
6/9/00
10:54
NO
22.9
0.0
0.8
18.3
0.0
>2000
0.0
0
6121100
16:40
0.00
NG
0.0
0.3
20.6
>200
1440
0.0
0
9/9/00
15:01
0.00
NG
0.0
0.0
20.5
NG
26
0.0
0
SVMP-8
Baselne
NO
0.00
16.4
0.0-
7.5
12.2
NG
>2500
0.0
90
4/24/00
14:57
0.00
20.0
61.4
5.2
11.1
0.0
1974
0.0
1228
4/24/00
17:14
0.00
17.9
57.2
5.2
11.5
2.0
2500
0.0
1144
4125/00
15:16
0.00
17.4
34.0
NG
13.3
0.0
NG
0.0
680
4126100
10:50
0.10
17.1
2.0
NG
13.2
2.0
670
0.0
40
4127100
10:17
0.00
17.3
13.5
4.0
11.7
4.0
NG
0.0
270
4128/00
11:23
0.06
NG
36.4
3.5
14.4
NG
NG
0.0
728
511100
11:12 ..
0.02
16.9
1.5
NG
12.7
1.0
1850
0.0
33
511100
16:24
0.04
17.2
2.3
NG
12.0
14.0
1598
0.0
46
5/2/00
11:30
0.00
67OF -
59.3
5.4
11.6
3.0
2000
0.0
1186
- 512100
14:03
0.00
18.0
38.9
3.4
15.2
2.0
2000
0.0
778
513/00
10:22
0.00
17.4
59.2
5.2
11.8
8.0
2000
0.0
1184
513100
15:08
0.01
16.9
59.8
5.1
11.2
8.0
2000
0.0
1196
5112/00
7:43
0.00
21.8
65.6
6.0
_
'. 11.2
0.0 -
552
0.0
8
5115/00
14:56
0.01
24.3
60.0
5.9
10.9
0.0
1402
0.0
>1000
5117100
12:05
0.00
24.3
29.4
4.5
14.4
0.0
1405
0.0
9
619100
10:58
NG
24.3,
5.2
2.3
13.9
0.0
672
0.0
104
6121100
16:14
0.00
- NG
0.0
0.0
21.0
0.0
67
0.0
0
919/00
14:21
0.00
NG
26.1
4.9
12.5
NG
- 0
- 0.0
522
SVMP-9
Baseline
NG
0.00
16.4
0.0
6.2
5.2
NG
>2500
- 0.0
>125
4/24100
15:04
0.00
18.6
0.0
0.0
20.7
0.0
701
0.0
0
4/24100
17:27
0.00
18.4
0.0
0.1
20.5
0.0
>2500
0.0
0
4125100
15:09
0.00
NG
0.4
1.5-
15.3
0.0
NG
0.0
8
4/26/00
11:04
0.00
NG
0.3
NG
11.8
2.0
NG
0.0
8
4127100
10:10
0.00
17.3
13.5
4.0
11.7
3.0
NG
0.0
270
4/27/00
15:58
0.10
NG
1.2
3.0
0.8
2.0
NG
0.0
24
4128100
11:24
0.05
NG
0.4
0.0
-18.6
0.0
565
0.0
8
511I00
11:10
0.02
18.0
0.0
NG
19.8
0.0
436
0.0
0
5I1/00
16:28
OA1
17.4
0.2
NG
20.1
3.0
300
0.0
3
512100
11:32
0.01
NG
0.5
0.9
18.9
0.0
672
0.0
10
5/2100
14:04
0.01
18.3
0.0
0.2
20.3
0.0
830
0.0
0
5/3/00
10:26
0.01
17.5
0.6
1.7
16.5
1.0
400
0.0
12
5/3100
15:12
0.00
17.7
0.6
1.9
15.9
4.0
1108
0.0
12
5112/00
7:38
0.00
22.0
0.4
0.5
19.9
0.0
220
0.0
6
5115100
14:58
0.02
25.3
28.8
7.8
4.0
0.0
1040
0.0
510
sit 7100
12:10
0.00
25.4
29.3
8.6
1.4
0.0
620
0.0
600
619100
11:02
NG
-24.4 -
0.3
1.0
16.9
0.0
215
0.0
6
6121I00
15:50
0.00
NG - -
0.0
0.0
20.9
0.0
5
0.0
0
918I00
13:58
0.00
NG
0.4
0.3
19.0
NG
142
0.0
8
Soil vapor field data summary 3 of 7 _ Revised 12/11/00

Table 3
Summary of Soii Vapor Field Monitoring Data
W.P. Ballard and Downgradient Properties
Greensboro, North Carolina
Vapor
Carbon
Carbon
Total VOCs
Percent
Monitoring
Date
Time
Pressure
Temperature
Methane
I
Dioxide
Oxygen
Monoxide
w/ PID
Chlorine
L.E.L.
Points
in. W01
VC)
1 %
'/o
%
m
m
m
SVMP•19
Baseline
NG
0.00
16.4
0.0
10.3
3.1
NG
>2500
0.0
125
4124/DO
15:57
1.00
18.0
62.6
4.6
10.7
0.0
1063
0.0
1252
4/24100
17:33
1:00
17.9
75.0
0.3
NG
1.0
>2500
0.0
4125/00
NG
NG
NG
NG
NG
NG -
NG
NG
NG
NG
4126100
NG
NG
NG
NG -
NG
NG
NG
NG
NG
NG
4/27/00
9:55
0.00
17.4
0.0
0.0
20.7
0.0
NG
0.0
0
4/27/00
16i02
0.02
17.9
4.7
1.9
17.9
0.0
NG
0.0
94
4128100
11:28
0.01
NG
0.7
0.6
21.0
0.0
445
0.0
5/1100
11:08
0.00
17.5 _
O.8
NG
17.4
8.0
1200
0.0
16
511/00
16:34
0.02
17.5
2.6
NG
18.1
14.0
1194
0.0
51
512/00
11:37
0.00
720F
22.8
2.5
18.7
4.0
1386
0.0
552
-
512100
14:07
- 0.00
18.1
14.7
2.0
19.0
4.0
>2000
0.0
294
513,10
10:30
0.00
17.4
NG
5.6
16.3
6.0
1314
0.0
.1.00
15:16
0.00
17.7
NG
3.9
15.5
4.0
1108
0.0
5/12/00
7:24
0.00
21.9
3.0
2.0
20.8
0.0
112
0.0
6
5/15100
15:00
0.03
24.0
30.8
1.8
10.0
0.0
520
0.0
670
5117100
12:15
0.00
24.3
100.0
5.9
15.5
0.0
1380
0.0
1000
619100
11:06
NG
23.4
5.8
0.4
17.9
0.0
1783
0.0
116
6121/00
15:14
0.00
NG
0.0
0.0
21.0
0.0
67
0.0
0
919100
13:31
0.00
NG
21.9
0.9
18.8
- NG
411
0.0
438
SVMP41
Baseline
NG
0.00
16.4
0.0
6.3
11.1
NG
>2500
0.0
>125
4124/00
15:47
0.20
18.5
0.0
0.0
- 20.7
11.0
1745
0.0
0
4124/00
17:43
0.00
17.4
3.6
"3.2
17.0
10.0
>2500
0.0
72
4125100
r15:03
0.00
16.9
3.9
3.5
17.1
4.0
NG
0.0
78
4/26100
11:11
0.00
16.2
0.9
NG
17.1
25.0
1158
0.0
17
4127100
9:50
0.00
18.8
1.6
1.9
10.7
24.0
NG
0.0
32
4127100
16:09
0.00
17.1
5.1
3.1
15.1
26.0
NG
0.0
102
4128/00
NG
NG
NG
NG
NG
NG
NG
NG
NG
NG
5/1/00
11:05
0.02
17.8
0.3
NG
18.0
15.0
>2500
0.0
6
5/1/00
18A0
0.04
16.3
0.7
NG
17.1
.27.0
>2500
0.0
13
5/2100
11:41
0.02
72F
0.0
0.2
18.7
4.0
1306
0.0
0
5/2100
14:10
0.00
17.2
1.3
2.1
17.4
18.0
>2000
0.0
26
5/3100
10:34
0.00
17.2
4.1
2.4
16.0
27.0
>2000
0.0
02
513/00
15:19
0.01
_
16.6
2.6
2.7
14.2
27.0
>2000
0.0
52
5112100
7:13
0.00 -
20.2
5.9
5.2
15.2
2.0
198
0.0
114
5/15/00
15:02
0.00
22.5
4.8
5.0
15.0
0.2
>2000
0.0
98
5/17100
NG
NG
NG
NG
NG
NG
NG
NG
NG
NG
6/9100
11:10
NG
23.2
0.3
2.2
15.6
0.0
>2000
0.0
6
6/21100
14:50
0.00
NG
0.0
0.0
20.9
'0.0
185
0.0
0
9/9/00
11:57
0.00
NG
4.2
6.3
4.4
NG
702
0.0
84
SVMP42
Baseline
NG
0.00
16.4
0.0
1.6
17.1
NG
>2500
0.0
11
4124/00
15:30
0.00
17.7
- 0.0
1.3
18.9
0.0
1959
0.0
0
4/24100
17:50
0.00
17.8
0.0
1.7
18.5
0.0
>2500
0.0
0
4125/00
14:54
0.00
16.6
0.0
0.4
19.8
0.0
NG
0.0
0
4126100
11:18
0.00
16.0
0.0
NG
17.0
0.0
689
0.0
2
4127100
9:47
0.00
16.4
0.0
0.2
20.4
0.0
1053
0.0
0
4127/00
16:14
0.01
-16.7
0.0
0.5
19.0
0.0
NG
0.0
0
4128/00
11:27
0.01
NG
0.0
0.7
20.1
0.0
1463
0.0
NG
511100
11:02
0.00
18.3
0.0
0.0
20.7
0.0
0
0.0
0
511100
16:50
0.00
17.4
0.0
NG
10.0
54.0
1550
0.0
0
5/2100
11:47
0.02
74oF
0.0
- 1.1
17.7
22.0
>2000
0.0
0
5/2100
14:13
0.01
17.9
0.0
1.0
10.0
8.0
>2000
0.0
0
5/3/00
10:39
0.00
16.8
0.0
0.4
19.5
3.0
>2000
0.0
0
5/3I00
15:22
0.00
16.4
0.0
0.9
17.0
6.0
1732
0.0
0
5/12100
7:00
O.OD
20.2
0.1
0.2
20.7
0.0
95
0.0
2
5/15100
15:04
0.00
22.3
0.0
0.2
19.8
0.0
13
0.0
0
5/17100
12:20
0.00
22.3
0.1
1.9
19.0
5.0
1782
0.0
2
619/00
11:14
NG
22.4
0.0
0.0
10.5
0.0
>2000
0.0
0
6/21100
14:25
0.00
NG
0.0
0.0
20.8
7.0
878
0.0
0
9/9/00
11:30
0.00
NG
0.0
1.9
4.1
NG
>2000
0.0
0
Sod vapor field data summary 4 of 7 Revised 12111/00

Table 3
Summary of Sell Vapor Field Monitoring Data
W.P. Ballard and Downgradient Properties
Greensboro, North Carolina
Vapor
Carbon
Carbon
Total VOCs
Percent
Monitoring
Dale
Time
Pressure
Temperature
Methane
Dioxide
Oxygen
Monoxide
w/ PID
Chlorine
L.E.L.
Points
in.HrO)
(°C)
%
%
Y.
m
m
SVMP43
Baseline
NG
0.00
18.4
0.0
0.0
20.9
NG
420
0.0
0
4124,00
15:18
NG
17.7
0.0
0.0
20.6
0.0
36
0.0
0
11.100
17:56
NG
18.5
0.0
0.0
20.7
0.0
>2500
0.0
0
4125/00
17:05
NG
16.5
0.0
NG
20.9
0.0
NG
0.0
0
4126100
11:29
NG
16.9
0.1
NG
20.4
2.0
374
0.0
1
4/27100
11:30
NG
17.0
0.0
0.3
20.2
2.0
NG
0.0
0
4/27100
16:20
NG
17.6
0.0
0.0
20.2
0.0
NG
0.0
0
4120/00
11:28
0.00
NG
0.0
0.3
21.4
0.0
>2500
0.0
0
511/00
11:33
0.00
18.3
0.0
NG
20.5
0.0
2050
0.0
0
511100
NG
NG
NG
NG
NG
NG
NO
NG
NG
NG
512100
11:53
0.01
19.4
0.0
0.1
20.0
0.0
12000
0.0
0
512100
13:48
0.00
20.9
0.0
0.3
20.7
0.0
>2000
0.0
0
5/3100
.3
0.00
20.6
0.0
0.3
20.7
0.0
>2000
0.0
0
513100
13:50
0.00
21.3
0.0
0.1
20.9
0.0
>2000
0.0
0
5/12/00
8:56
0.00
24.2
0.0
0.4
20.7
0.0
1616
0.0
0
5/15100
15:08
0.00
24.3
0.0
0.4
20.0
0.0
1037
0.0
0
5/17100
12:40
0.00
24.1
0.0
0.4
20.7
0.0
loll
0.0
0
6/9/00
11:18
NG
23.9
0.1
0.3
19.2
0.0
308
0.0
2
6121100
13:32
0.00
NG
0.0
0.0
20.8
41.0
>2000
0.0
0
WELL ABANDONED FOLLOWING
THE COMPLETION
OF THE PILOT
INJECTION EVENT
SVMP44
Baseline
NG
0.00
16.4
0.0
0.0
20.9
NG
540
0.0
2
4124100
15:22
NG
18.8
0.0
0.2
20.5
0.0
77
0.0
0
4/24100
18:04
NG
18.9
0.0
0.0
20.7
0.0
>2500
0.0
0
4/25100
17:11
NG
17.6
0.0
NG
20.0
0.0
NG
0.0
0
4126/00
11:34
NG
16.9
0.1
NG
20.5
0.0
1649
0.0
1
4/27100
11:24
NG
17.2
0.0
0.4
19.7
0.0
NG
0.0
0
4/28100
11:29
0.00
NG
o.6
1 0.4
21.3
0.0
1472
0.0
0
511/00
11:31
0.00
18.3
0.0
NG
20.6
0.0
80
0.0
0
5/1/00
NG
NG
NG
NG
NG
NG
NG
NG
NG
NG
512100
11:50
0.01
66oF
0.0
0.3
20.6
0.0
.435
1.0
0
5/2/00
13:50
0.00
20.7
0.0
0.3
20.9
0.0
695
0.0
0
513/00
9:30
0.00
20.2
0.0
0.3
20.6
0.0
1180
0.0
0
513100
13:47
0.00
214.0
0.0
0.3
20.8
0.0
1015
0.0
0
5112/00
9:10
0.00
23.7
0.0
0.4
20.6
NG
309
0.0
0
5115100
15:06
0.00
23.8
0.0
0.4
20.1
0.0
450
0.0
0
5117/00
12:30
0.00
23.6
0.0
0.4
20.0
0.0
476
0.0
0
619100
11:22
NG
24.0
0.0
0.2
19.2
0.0
1344
0.0
0
6/21/00
13:55
0.00
NG
0.0
0.2
20.8
0.0
670
0.0
0
WELL ABANDONED FOLLOWING
THE COMPLETION
OF THE PILOT
INJECTION EVENT
EW-2
Baseline
NG
0.00
16.4
0.0
0.2
20.4
0.0
960
0.0
3
(SVE-9)
513/00
16:47
0.00
18.4
0.0
0.0
17.9
0.0
0
0.0
0
5/4/00
8:55
0.00
19.4
0.0
0.1
20.6
0.0
18
0.0
0
5/4/00
15:42
0.00
1B.B
0.0
0.2
20.4
0.0
1
0.0
0
515/00
8:23
0.00
19.6
0.0
0.1
20.6
0.0
113
0.0
0
515/00
14:16
0.00
19.7
0.0
0.1
20.4
0.0
0
0.0
0
518/00
10:29
0.00
20.1
0.0
0.1
20.2
0.0
0
0.0
0
5/8/00
14:16
0.00
19.9
0.0
0.3
19.9
2.0
7
0.0
0
519100
6:51
0.00
21A
0.0.
0.1
20.5
0.0
1
0.0
0
519100
13:46
0.00
20.0
0.0
0.1
20.2
0.0
0
0.0
0
5110100
8:53
0.00
21.8
0.0
0.2
20.4
0.0
0
0.0
0
5111100
11:00
0.00
23.7
0.0
0.0
20.7
0.0
0
0.0
0
5/11100
13:48
0.00
23.6
0.0
0.1
20.0
0.0
18
0.0
0
.1.0
13:50
0.00
23.4
0.0
0.0
20.8
0.0
1
0.0
0
6/9100
11:50
NG
24.9
0.0
0.6
18.2
0.0
0
0.0
0
6121/00
10:56
0.00
NG
0.0
0.7
19.7
0.0
23
0.0
0
9/11l00
13:50
0.00
NG
0.0
0.0
19.6
NG
19
0.0
0
Soil vapor field data summary 5 of 7 Revised 12/11/00

Table 3
Summary of Soil Vapor Field Monitoring Data
W.P. Ballard and Downgradient Properties
Greensboro, North Carolina
Vapor
Carbon
Carbon
Total VOCs
Percent
Monitoring
Date
Time
Pressure
Temperature
Methane
Dioxide
Oxygen
Monoxide
wI PID
Chlorine
L.E.L
Points
(in, NO)
(IC)
%
%
%
m
m
m
EWd
Baseline
NG
0.00
16.4
0.0
0.2
20.6
NG
840
0.0
0
(NVDP-13)
5/3/00
16:40
0.02
19.0
0.0
1.1
18.0
0.0
28
0.0
0
514/00
9:0a
0.00
19.1
0.0
0.1
20.6
0.0
4
11.0
0
5/4I00
15:37
0.00
21.6
0.0
0.2
18.9
0.0
60
0.0
0
511/00
8:30
0.00
20.6
0,0
0.1
20.7
0.0
396
0.0
0
515100
14:04
0.01
32.9
0.0
0.2
20.5
0.0
17
0.0
0
U8100
10:17
0.00
19.6
0.0
0.1
20.5
0.0
1
0.0
0
518100
14:05
0.00
20.9
0.0
0.2
20.3
0.0
20
0.0
0
5/9100
6:43
0.00
20.7
0.0
0.1
20.5
0.0
2
0.0
0
5/9/00
13:40
0.00
20.4
0.0
0.1
20.3
0.0
10
0.0
0
5/10100
8:42
0.11
21.4
0.0
0.1
20.5
0.0
0
0.0
0
5/11100
10:09
D,Do
25.3
0.0
0.0
20.0
0.0
0
0.0
0
5/11100
13:30
0.10
24.0
0.0
0.1
20.6
0.0
33
0.0
0
5/17/00
14:00
0.00
20.2
0.0
0.0
20.9
0.0
0
0.0
0
619100
12:00
NG
25.7
0.0
0.5
18.6
0.0
0
0.0
O
6121100
9:55
0.00
NG
0.0
0.0
20.7
0.0
0
0.a
0
9/11100
13:00
0.00
NG
0.0
0.0
20.6
NG
0
0.0
0
PT45
Baseline
NG
NG
NG
NG
NG
NG
NG
NG
NG
5/wOo
16:21
0.02
".6
0.0
0.1
18.2
0.0
0
0.0
0
5/4100
9:00
0.02
21.7
0.0
0.2
20.5
0.0
0
0.0
0
5/4100
15:24
0,03
20.2
0.0
0.2
20.2
0.0
0
0.0
0
515100
8:10
0.01
21.0
0.0
0.1
20.7
0.0
0
0.0
D
515/00
14:11
0.00
21.3
0.0
0.0
20.0
0.0
1
0.0
0
5/a/00
10:24
0.00
22.6
0.0
0.1
20.2
0.0
0
0.0
0
518100
t4:12
0.00
24.2
0.0
0.0
20.0
0.0
0
0.0
0
5/9100
6:47
0.00
23.6
0.0
0.1
20.6
0.0
8
0.0
0
5/9100
13:43
0.00
22.7
0.0
0.1
20.2
0.0
_ 0
0.0
0
5110/00
0:48
0.00
23.4
0.0
0.1
20.6
0.0
D
0.0
0
5111/00
10:20
0.00
26.5
0.0
0.0
20,6
0.0
0
0.0
0
5111100
13:53
0.00
24.6
0.0
0,0
20.6
0.0
0
0.0
0
5117/0D
13:00
0.00
26,8
0.0
0.2
20.5
0.0
3
0.0
0
619100
11:350
NG
27.6
0.0
0,5
19.2
0.0
11
0.0
0
6121100
1024
0.00
NG
0.0
0.0
20.7
0.0
0
0.0
0
9I11100
13:22
0.00
NG
0.0
0.0
19.8
NG
0
0.0
0
PT-2S
Baseline
NG
NG
NG
NG
NG
NG
NG
NG
NG
NG
5WOO
16:17
0.00
17.6
0.0
0.5
18.0
0.0
5
0.0
0
5141O0
9:12
0.01
19.8
0.0
0.5
20.4
0.0
15
0.0
0
514100
15:28
0.01
is. 6
0.0
0.5
20.2
0.0
63
0.0
0
5/5100
8:05
0.00
19.8
0.0
0.5
20.4
3.0
426
0.0
0
515/00
14:08
0.00
19.4
0.0
0.5
20.0
0.0
6
0.0
0
5/8I00
10:21
0.00
23.8
1.0
0.5
19.8
0.0
5
0.0
0
518/00
14:08
0.00
20.3
0.0
0.1
20.2
0.0
0
0.0
0
519/00
6:39
0.00
22.8
0.0
0.6
20.2
0.0
7
0.0
0
5/9I00
13:36
0.02
22.7
0.0
0.2
20.3
0.0
14
0.0
0
5/10100
8:45
0.00
24.2
0.0
0.1
20.6
0.0
0
0.0
0
5/11100
10:29
0.00
28.0
0.0
0.4
20.3
0.0
2
0.0
0
5/11100
13:42
0.00
25.2
0.0
0.5
19.8
O,0
52
0.0
0
5/17/00
13;10
0.00
27.9
0.1.
0.5
20.1
0.0
105
0.0
0
619/00
11:30
NG
28.3
0,0
0.5
19.1
0.0
D
0.0
0
6121/OD
NG
NG
NG
NG
NG
NG
NG
NG
NG
NG
911110
NG
NG
NG
NG
NG
NG
NG
NG
NG
NG
Soil vapor field data summary 6 07 Revised 12/11100

Table 3
Summary of Soil Vapor Field Monitoring Data
W.P. Ballard and Downgradient Properties
Greensboro, North Carolina
Vapor
Carbon
Carbon
Total VOCs
Percent
Monitoring
Date
Time
I
Pressure
I
Temperature
Methane
Dioxide
Oxygen
Monoxide
w/PID
Chlorine
L.E.L
Points
(w KO)
VC)
N
1%1m
m
m
X
PT-3S
Baseline
NG
0.00
16.4
0.0
0.2
20.9
NG
1090
0.0
4
513100
16:24
0.11
18.7
0.0
0.1
18.3
0.0
4
0.0
0
5/4100
8:49
a.00
19.6
0.0
0.1
20.7
0.0
0
0.0
0
5/4/00
15:20
0.01
19.2
0.0
0.1
20.9
0.0
23
0.0
0
515100
8:14
0.00 -
19.9
0.0
0.1
20.8
0.0
230
0.0
0
515/00
14:19
0.00
21.0
0.0
0.3.
19.9
0.0
6
0.0
0
518100
10:33
0.00
22.4
0.0
0.2
19.9
0.0
3
0.0
0
5/8/00
14:19
0.00
21.6
0.0
0.1
20.0
0.0
0
0.0
0
519/00
6:58
0.00
23.0
0.0
0.1
20.6
0.0
12
0.0
0
519100
13:48
0.00
22.5
0.0
0.1
20.0
0.0
0
0.0
0
5110/00
8:56
0.00
23.5
0.0
0.1
20.5
0.0
0
0.0
0
5/11/00
10:36
0.00
25.9
0.0
0.5
20.1
0.0
11
0.0
0
5/11100
14:"
0.00
23.5
0.0
0.1
18.7
0.0
0
0.0
0
5/17/00
13:20
0.00
25.8
0.0
0.3
20.5
0.0
5
0.0
0
619100
11:40
NG
27.2
0.0
0.5
18.3
0.0
28
0.0
0
6121/00
11:24
0.00
NO
0.0
0.2
20.5
0.0
0
0.0
0
9/11100
14:11
0.00
NG
0.0
0.0
19.6
NG
0
0.0
0
PT4S
Baseline
NG
0.00
16..4
0.0
0.8
19.3.
NG
1280
0.0
3
513/00
16:31
0.15
18.8
0.0
1.7
15.9
0.0
0
11.0
0
5/4100
8;46
0.00
20.1
0.0
0.7
20.5
0.0
6
0.0
0
514100
15:17
0.03
21.0
0.0
1.8
18.5
0.0
9
0.0
0
5/5100
8:20
0.00
19.6
0.0
0.1
20.7
0.0
220
0.0
0
515/00
14:22
0.00
19.5
0.0
0.3
20.1
0.0
0
0.0
0
5/8/00
10;35
0.00
20.8
0.0
0.0
20.2
0.0
0
0.0
0
5/8/00
14:21
0.00
21.6
0.0
0.1
20.0
0.0
a
0.0
0
519100
7:06
0.00
21.9
0.0
0.1
20.6
0.0
52
0.0
0
519/00
13:52
0.00
22.1
0.0
0.0
20.1
0.0
0
0.0
0
5110100
0:59
0.00
22.7
0.0
0.1
20.5
0.0
0
0.0
0
5/11/00
10:50
0.00
24.4
0.0
0.2
20.7
0.0
0
0.0
0
5/11100
13:59
0.00
25.4
0.0
0.2
19.5
0.0
3
0.0
0
5117/00
13:30
0.00
24.8
0.0
2.0
16.6
0.0
2
0.0
0
6/9/00
11:45
25.10
a ' 0
0.3
18.5
0.0
0.0
0
0.0
fi
6121100
12:00
0.00
NG
0.0
0.0
20.9
0.0
0
0.0
0
9/11100
14:33
0.00
NG
0.0
0.0
19.9
NG
0
0.0
0
PT-55
Baseline
NG
0.00
16.4
0.0
0.1
20.9
NG
908
0.0
3
513/00
16;11
0.05
22.5
0.0
0.5
17.8
0.0
0
0.0
0
5/4/00
9:16
0.03
21.7
0.0
0.8
20.3
0.0
0
0.0
0
5/4/00
15:31
0.05
21.3
0.0
0.4
20.2
0.0
0
0.0
0
515100
8:01
0.00
22.3
0.0
0.1
20.7
0.0
355
0.0
0
5/5/00
14:00
0.01
22.8
0.0
0.1
20.6
0.0
31
0.0
0
5/8100
10:13
0.00
25.9
0.0
0.1
20.3
0.0
0
0.0
0
5/8/00
14:00
0.00
23.2
0.0
0.120.6
0.0
0
0.0
0
519/00
6:35
0.00
23.7
0.0
0.1
20.7
0.0
12
0.0
0
5/9/00
13:32
0.01
23.9
0.0
0.1
20.8
0.0
0
0.0
0
5110100
8:37
0.00
24.2
0.0
0.1
20.6
0.0
0
0.0
0
51, 1100
9:58
0.00
25.7
0.0
0.1
20.7
0.0
0
0.0
0
5/11100
13:22
0.00
20.6
0.0
0.1
20.7
0.0
2
0.0
0
5117100
13:40
0.00
27.8
0.1.
0.6
20.4
0.0
10
0.0
2
619100
11:26
NG
27.4
0.5
0.5
19.0
0.0
0
0.0
10
6121100
9:18
0.00
NG
0.0
0.0
20.7
0.0
0
0.0
0
9/11100
11:40
0.00
NG
0.0
0.0
21.0
NG
0
0.0
0
NOTES: NG denotes parameter or entire sampling point not gauged.
Soil vapor held data summary 7 of 7 Revised 12/11/00

Table 4
Summary of Soil Vapor Laboratory Analytical Data
W.P. Ballard and Downgradient Properties
Greensboro, North Carolina
Location
SVMP-1
SVMP-2
SVMP-3
Date Sampled
01/20/99
01/27/99
11/19/99
03/24/00
06/21/00
09/09/00
01/20/99
01/27/99
11/19/99
03/24/00
06/21/00
09/09/00
01/20/99
01/27/99
11/19/99
03/24/00
6121100
919/00
Compound
(mg/m)
(mg/m)
(mg/me)
(mg/ma)
(mg/ma)
(mg/m)
(mg/ma)
(mg/ma)
(mg/m)
(mg/ma)
(mg/ma)
(mg/ma)
(mg/ma)
(mg/m)
(mg/ma)
(mg/m)
(mg/ma)
(mg/ma)
Bromodichloromelhane
<0.5
<250
<0.005
<0.03
<.005
<0.03
<0.5
<250
<0.005
<0.03
<.005
<0.03
<0.5
<250
<0.005
<0.03
<,005
<0.03
Bromoforrn
<0.5
<250
<0.005
<0.05
<.005
<0.05
<0.5
<250
<0.005
<0.05
<.005
<0.05
<0.5
<250
<0.005
<0.05
<.005
<0.05
2-Chloroethylvinylether
<0.5
<250
NA
NA
NA
NA
<0.5
<250
NA
NA
NA
NA
<0.5
<250
NA
NA
NA
NA
Dibromochloromelhane
<0.5
<250
<0.005
NA
<,005
<0.04
<0.5
<250
<0.005
NA
<.005
<0.04
<0.5
<250
0.005
NA
<,005
<0.04
Dichlorodifluoromethane
<0.5
<250
<0.005
<0.02
NA
NA
<0.5
<250
<0.005
<0.02
NA
NA
<0.5
<250
<0.005
<0.02
NA
NA
Trichlorofluoromethane
<0.5
<250
0.006
NA
<,005
<0.03
<0.5
<250
<0.005
NA
<.005
<0.03
<0.5
<250
<0.005
NA
<.005
<0.03
Vinyl Chloride
<0.5
<250
<3
<6.0
<3
<6
<0.5
<250
<3
<6.0
<3
<6
<0.5
<250
<3
<6.0
<3
<6
Chloromethane
<0.5
<250
<1
<2.0
<1
<2
<0.5
<250
1
<2.0
<1
<2
<0.5
<250
6.6
<2.0
<1
<2
Bromomethane
<0.5
<250
<1
<3.0
<1
<3
<0.5
<250
<1
<3.0
<1
<3
<0.5
<250
<1
<3.0
<1
<3
Chloroethane
<0.5
<250
<1
<3.0
NA
<3
<0.5
<250
<1
<3.0
NA
<3
<0.5
<250
<t
<3.0
NA
<3
1,1-Dichloroethane
<0.5
<250
<0.01
0.16
<.001
<0.04
<0.5
<250
<0.01
0.2
<0.01
<0.04
<0.5
<250
<0.01
0.28
<0.01
<0.04
t-1,2-Dichloroelhene
<0.5
<250
<0.1
<0.4
<.01
<0.4
<0.5
<250
0.2
<0.4
<,1
<0.4
<0.5
<250
<0.1
0.4
<0.1
<0.4
1,2-Dichloropropane
<0.5
<250
<0.01
<0.05
<,01
<0.05
<0.5
<250
<0.01
<0.05
<.01
<0.05
<0.5
<250
<0.01
<0.05
<0.01
<0.05
1,1,2-Trichloroelhane
<0.5
<250
0.281
0.61
0.0117
<0.03
<0.5.
<250
1.14
0.65
0.221
<0.03
2.2
<250
3.064
10.64
0.949
0.26
1,2-Dibromoethane
<0.5
<250
NA
NA
NA
NA
<0.5
<250
NA
NA
NA
NA
<0.5
<250
NA
NA
NA
NA
Chlorobenzene
<0.5
<250
<0.07
<0.3
<.07
<0.3
<0.5
<250
<0.07
<0.3
<,07
<0.3
<0.5
<250
<0.07
<0.3
<0.07
<0.3
c- 1,3-Dichl oropropene
<0.5
<250
<0.01
<0.05
<.01
<0.05
<0.5
<260
<0.01
<0.05
<.01
<0.05
<0.5
<250
<0.01
<0.05
<0.01
<0.05
t- 1, 3-Dich loropropen e
<0.5
<250
<0.01
<0.05
<.01
<0.05
<0.5
<250
<0.01
<0.05
<.01
<0.05
<0.5
<250
<0.01
<0.05
<.01
<0.05
1,1,2,2-Telrachloroethane
<0.5
<250
<0.005
<0.03
<,005
<0.03
<0.5
<250
<0.005
<0.03
<.005
<0.03
<0.5
<250
<0.005
<0.03
<0.005
<0.03
1,2-Dichlorobenzene
<0.5
<250
<0.07
<0.4
<.07
<0.4
<0.5
<250
<0.07
<0.4
<.07
<0.4
<0.5
<250
<0.07
<0.4
<0.07
<0.4
1,3-Dichlorobenzene
<0.5
<250
<0.07
<0.4
<,07
<0.4
<0.5
<250
<0.07
<0.4
<.07
<0.4
<0.5
<250
<0.07
<0.4
<0.07
<0.4
1,4-Dichlorobenzene
<0.5
<250
<0.07
<0.4
<.07
<0.4
<0.5
<250
<0.07
<0.4
<.07
<0.4
<0.5
<250
<0.07
<0.4
<0.07
<0.4
1,2,4-Trichlorobenzene
<0.5
<250
<0.2
<1.5
NA
NA
<0.5
<250
<0.2
<1.5
NA
NA
<0.5
<250
<0.2
<1.5
NA
NA
Methylene Chloride
<0.5
<260
<2
<6.0
<2
<6
<0.5
<250
<2
<6.0
<2
<6
<0.5
<250
<2
<6.0
<2
<6
Chloroform
<0.5
<250
0.141
0.56
0.127
0.61
<0.5
<250
0.291
0.51
0.096
0.49
1.9
<250
0.423
1.3
0.134
1.16
Carbon tetrachloride
<0.5
<250
0.034
0.16
0.026
0.13
<0.5
<250
0.04
0.13
0.016
0.08
<0.5
<250
0.054
0.25
0.016
0.13
Tetrachloroethene
5,300
8,600
1530.03
6085
883.65
5707
7,500
57,000
2,181
4194
845.59
3876
8,300
13,000
2,106
14,070
737.16
3168
Trichloroelhene
5.2
<250
0.954
2.45
0.456
2.28
7.8
<250
1.376
1.58
0.333
1.51
20
<250
3.218
12.43
0.789
4.71
1,1,1-Trichloroelhane
<0.5
<250
0.005
<0.03
<,005
<0.03
<0.5
<250
0.006
<0.03
<.005
<0.03
<0.5
<250
0.011
<0.03
<0.005
0.03
1,2-Dichloroethane
<0.5
<250
<0.01
<0.04
<.01
<0.04
<0.5
<250
<0.01
<0.04
<01
<0.04
<0.5
<250
<0.01
0.08
<0.01
<0.04
c-1,2-Dichloroelhene
<0.5
<250
<0.1
2.8
NA
4.1
1.7
<250
<0.1
2.4
NA
3.1
4.1
<250
1.4
8.3
NA
<0.4
1,1-Dichloroelhene
<0.5
<250
<0.01
<0.04
<.01
<0.04
<0.5
<250
<0.01
<0.04
<,01
<0.04
1
<250
<0.01
0.79
0.04
<0.04
Sum of Detected EPA 601
r2.121.34
Compounds
5.305.20
8,600.00
1,531.45
6,091.74
884.27 1
5,714.12
7,509.50
57,000.00
2,184.61
4,199.47
846.26
3,881.18
8329.20
13.000.00
14,104.47
739.088
3.174.03
Sol vapor lab data summary Page 1 of 6 Revised 12/6100

Table 4
Summary of Soil Vapor Laboratory Analytical Data
W.P. Ballard and Downgradient Properties
Greensboro, North Carolina
Location
SVMP4
SVMP-5
SVMP-6
Date
1/ZO/99
1/27/99
11/19/99
03/24/00
6/21100
9/9/00
1/20/99
2/2/99
11/19/99
03/24/00
06/21/00
09/09/00
1/20/99
1/27/99
11/19/99
3124/00
6/21/00
9/9/00
Compound
(mg/ma)
(mg/ma)
(mg/m)
(mg/ma)
(mg/m)
(mg/m)
(mg/m)
(mg/m)
(mg/m)
(mg/M)
(mg/m)
(mg/rn)
(mg/me)
(mg/ma)
(mg/ma)
(mg/ma)
(mg/m')
(mg/ma)
Bremodichloromethane
<0.5
<250
<0.005
<0.03
<0.005
<0.03
<0.5
<250
0.008
<0.03
<0.005
<0.03
<0.5
<250
<0.005
<0.03
<0.005
<0.03
Bromoforrn
<0.5
<250
<0.005
<0.05
<0.005
<0.05
<0.5
<250
<0.005
<0.05
<0.005
<0.05
<0.5
<250
<0.005
<0.05
<0.005
<0.05
2-Chlorcethylvinylether
<0.5
<250
NA
NA
NA
NA
<0.5
<250
NA
NA
NA
NA
<0.5
<250
NA
NA
NA
NA
Dibromochloromethane
<0.5
<250
<0.005
NA
<0.005
<0.04
<0.5
<250
<0.005
NA
<0.005
<0.04
<0.5
<250
<0.005
NA
<0.005
<0.04
Dichlorodifluoromethane
<0.5
<250
<0.005
<0.02
NA
NA
<0.5
<250
<0.005
<0.02
NA
NA
<0.5
<250
<0.005
<0.02
NA
NA
Trichloro0uoromethane
<0.5
<250
<0.005
NA
<0.005
<0.03
<0.5
<250
<0.005
NA
<0.005
<0.03
<0.5
<250
<0.005
NA
<0.005
<0.03
Vinyl Chloride
<0.5
<250
<3
<6.0
<3
<6
<0.5
<250
<3
<6.0
<3
<6
<0.5
<250
<3
<6.0
<3
<6
Chloromelhane
<0.5
<260
7.3
<2.0
<1
<2
<0.5
<250
7.1
<2.0
<1
<2
<0.5
<250
<1
<2.0
<1
<2
Bromomelhane
<0.5
<250
<1
<3.0
<1
<3
<0.5
<250
<1
<3.0
<1
<3
<0.5
<250
<1
<3.0
<1
<3
Chlorcethane
<0.5
<250
<1
<3.0
NA
<3
<0.5
<250
<1
<3.0
NA
<3
<0.5
<250
<1
<3.0
NA
<3
1,1-Dichloroelhane
<0.5
<250
0.08
0.04
<0.01
<0.04
<0.5
<250
<0.01
0.16
<0.01
<0.04
<0.5
<250
<0.01
0.04
<0.01
<0.04
t-1,2-Dichloroethene
<0.5
<250
0.1
<0.4
<0.1
<0.4
<0.5
<250
0.1
0.4
<0.1
<0.4
<0.5
<250
0.2
0.4
<0.1
1.2
1,2-Dichloropropane
<0.5
<250
<0.01
<0.05
<0.01
<0.05
<0.5
<250
<0.01
<0.05
<0.01
<0.05
<0.5
<250
<0.01
<0.05
<0.01
<0.05
1,1,2-Trichlcroethane
<0.5
<250
0.765
1.33
0.261
0.04
3.2
<250
3.687
7.35
1.547
0.69
<0.5
<250
1.545
2.41
0.288
0.06
1,2-Dibromoelhane
<0.5
<250
NA
NA
NA
NA
<0.5
<250
NA
NA
NA
NA
<0.5
<250
NA
NA
NA
NA
Chlorobenzene
<0.5
<250
<0.07
<0.3
<0.07
<0.3
<0.5
<250
<0.07
<0.3
<0.07
<0.3
<0.5
<250
<0.07
<0.3
<0.07
<0.3
c-1,3-Dichloropropene
<0.5
<260
<0.01
<0.05
<0.01
<0.05
<0.5
<250
<0.01
<0.05
<0.01
<0.05
<0.5
<250
<0.01
<0.05
<0.01
0.05
t-1,3-Dichloropropene
<0.5
<250
<0.01
<0.05
<0.01
<0.05
<0.5
<250
<0.01
<0.05
<0.01
<0.05
<0.5
<250
<0.01
<0.05
<0.01
<0.05
1,1,2,2-Tetrachloroethane
<0.5
<250
<0.005
<0.03
<0.005
<0.03
<0.5
<250
<0.005
<0.03
<0.005
<0.03
<0.5
<250
<0.005
<0.03
<0.005
<0.03
1,2-Dichlorobenzene
<0.5
<250
<0.07
<0.4
<0.07
<0.4
<0.5
<250
<0.07
<0.4
<0.07
<0.4
<0.5
<250
<0.07
<0.4
<0.07
<0.4
1,3-Dichlorobenzene
<0.5
<250
<0.07
<0.4
<0.07
<0.4
<0.5
<250
<0.07
<0.4
<0.07
<0.4
<0.5
<250
<0.07
<0.4
<0.07
<0.4
1,4-Dichlorobenzene
<0.5
<250
<0.07
<0.4
<0.07
<0.4
<0.5
<250
<0.07
<0.4
<0.07
<0.4
<0.5
<250
<0.07
<0.4
<0.07
<0.4
1,2,4-Trichlorobenzene
<0.5
<250
<0.2
<1.5
NA
NA
<0.5
<250
<0.2
<1.5
NA
NA
<0.5
<250
<0.2
<1.5
NA
NA
Methylene Chloride
<0.5
<250
<2
<6.0
<2
<6
<0.5
<250
<2
<6.0
<2
<6
<0.5
<250
<2
<6.0
<2
<6
Chloroform
<0.5
<250
0.194
0.71
0.155
0.51
2.9
<250
0.635
1.82
0.445
2.18
2.1
<250
0.455
1.34
0.184
1.97
Carbon tetrachloride
<0.5
<250
0.017
0.08
0.013
0.04
<0.5
<250
0.06
0.25
0.044
0.23
0.5
<250
0.084
0.37
0.031
0.47
Tetrachloroelhene
5,900
6,500
806
3,221
475
2815
8,600
48,000
2,891
10,768
1,144
12915
8,700
17,000
2,792
8620
758.91
14080
Trichloroethene
24
<250
3.123
9.9
1.614
6.13
23
<250
3.534
8.41
1.476
9.31
22
<250
3.29
7.99
0.864
10.82
1,1,1-Tdchloroethane
<0.5
<250
<0.005
<0.03
<0.005
<0.03
<0.5
<250
0.017
0.05
0.01
0.05
<0.5
<250
0.012
0.04
<0.005
0.05
1,2-Dichloroelhane
1.5
<250
0.92
1-3
0.1
0.28
<0.5
<250
0.26
0.16
0.01
<0.04
<0.5
<250
0.05
<0.04
<0.01
<0.04
c-1,2-Dichloroethene
5.6
<250
1.6
5.6
NA
<0.4
5.6
<250
1.9
8.3
NA
<0.4
4.8
<250
1.4
7.2
NA
<0.4
1,1-Dichloroethene
0.58
<260
0.05
0.4
0.05
0.08
1.5
<250
0.08
0.95
0.17
0.6
1.6
<250
<0.01
1.15
0.08
0.64
Sum of Detected EPA 601
Compounds
5,931.68 1
6.500.00 1
819.74 1
3.240.36
476.90
2,822.04
8.636.20
48,000.00
2,908.25
10.795.8j
1,147.90
12,927.37
8,731.00
17,000.06
2,798.62
8640.94 1
760.357 1
14.093.95
Soil vapor lab data summary Page 2 or 6 Revised 12/6100

Table 4
Summary of Soil Vapor Laboratory Analytical Data
W.P. Ballard and Downgradient Properties
Greensboro, North Carolina
Location
SVMP-7
SVMP-8
SVMP-9
Date
1/20/99
1127/99
11/19/99
03/24/00
6/21/00
9/9/00
1/20/99
1/27/99
11/19/99
03/24/00
06/21/00
09/09/00
1/20/99
1/27/99
11/19/99
3/24/00
6121/00
09/09/00
Compound
(mg/m')
(mg/ma)
(mg/m)
(mg/m)
(mg/M)
(mg/ma)
(mg/m)
(frt
(mg/ma)
(mg/m)
(mg/m)
(mg/M)
(mg/m)
(mg/M3)
(mg/ma)
(mg/m)
(mg/M)
(mg/ma)
Bromodichloromelhane
<0.5
<250
<0.005
<0.03
<0.005
<0.03
<0.5
<250
<0.005
<0.03
<0.005
<0.03
<0.5
<250
<0.005
<0.03
<0.005
<0.03
Bromoform
<0.5
<250
<0.005
<0.05
<0.005
<0.05
<0.5
<250
<0.005
<0.05
<0.005
<0.05
<0.5
<250
<0.005
<0.05
<0.005
<0.05
2-Chloroethylvinylether
<0.5
<250
NA
NA
NA
NA
<0.5
<250
NA
NA
NA
NA
<0.5
<250
NA
NA
NA
NA
Dibromochloromethane
<0.5
<250
<0.005
NA
<0.005
<0.04
<0.5
<250
<0.005
NA
<0.005
<0.04
<0.5
<250
<0.005
NA
<0.005
<0.04
Dichlorodi0uoromethane
<0.5
<250
<0.005
<0.02
NA
NA
<0.5
<250
<0.005
<0.02
NA
NA
<0.5
<250
<0.005
<0.02
NA
NA
Trichlorofluoromelhane
<0.5
<250
<0.005
NA
<0.005
<0.03
40.5
<250
<0.005
NA
<0.005
<0.03
<0.5
<250
<0.005
NA
<0.005
<0.03
Vinyl Chloride
<0.5
<250
<3
<6.0
<3
<6
<0.5
<250
<3
<6.0
<3
<6
<0.5
<250
<3
<6.0
<3
<6
Chloromethane
<0.5
<250
<1
<2.0
<1
<2
<0.5
<250
1.1
<2.0
<1
<2
<0.5
<250
1.2
<2.0
<1
<2
Bromomethane
<0.5
<250
<1
<3.0
<1
<3
<0.5
<250
<1
<3.0
<1
<3
<0.5
<250
<1
<3.0
<1
<3
Chloroethane
<0.5
<250
<1
<3.0
NA
<3
<0.5
<250
<1
<3.0
NA
<3
<0.5
<250
<1
<3.0
NA
<3
1,1-Dichloroethane
<0.5
<250
0.01
0.16
<0.01
<0.04
<0.5
<250
0.14
<0.04
0.03
<0.04
<0.5
<250
0.04
0.53
0.03
0.37
t-1,2-Dichloroethene
<0.5
<250
0.4
1.2
0.2
0.8
<0.5
<250
0.4
<0.4
<0.1
<0.4
<0.5
<250
0.1
0.4
0.1
<0.4
1,2-Dichloropropane
<0.5
<250
<0.01
<0.05
<0.01
<0.05
<0.5
<250
<0.01
<0.05
<0.01
<0.05
<0.5
<250
<0.01
<0.05
<0.01
<0.05
1.1,2-Trichloroelhane
2
<250
2.766
12.65
2.706
0.31
<0.5
<250
1.369
1.37
0.747
0.04
<0.5
<250
0.123
0.32
0.007
0.07
1,2-Dibromoethane
<0.5
<250
NA
NA
NA
NA
<0.5
<250
NA
NA
NA
NA
<0.5
<250
NA
NA
NA
NA
Chlorobenzene
<0.5
<250
<0.07
<0.3
<0.07
<0.3
<0.5
<250
<0.07
<0.3
<0.07
<0.3
<0.5
<250
0.2
<0.3
<0.07
<0.3
c-1,3-Dichloropropene
<0.5
<250
<0.01
<0.05
<0.01
<0.05
<0.5
<250
<0.01
<0.05
<0.01
<0.05
<0.5
<250
<0.01
<0.05
<0.01
<0.05
t- 1.3-D ich loropropene
<0.5
<250
<0.01
<0.05
<0.01
<0.05
<0.5
<250
<0.01
<0.05
<0.01
<0.05
<0.5
<250
<0.01
<0.05
<0.01
<0.05
1,1,2,2-Tetrachloroethane
<0.5
<250
<0.005
<0.03
<0.005
<0.03
<0.5
<250
<0.005
<0.03
<0.005
<0.03
<0.5
<250
<0.005
<0.03
<0.005
<0.03
1,2-Dichlorabenzene
<0.5
<250
<0.07
<0.4
<0.07
<0.4
<0.5
<250
<0.07
<0.4
<0.07
<0.4
<0.5
<250
<0.07
<0.4
<0.07
<0.4
1,3-Dichlorabenzene
<0.5
<250
<0.07
<0.4
<0.07
<0.4
<0.5
<250
<0.07
<0.4
<0.07
<0.4
<0.5
<250
<0.07
<0.4
<0.07
<0.4
1,4-Dichlorabenzene
<0.5
<250
<0.07
<0.4
<0.07
<0.4
<0.5
<250
<0.07
<0.4
<0.07
<0.4
<0.5
<250
<0.07
<0.4
<0.07
<0.4
1,2,4-Tdchlorobenzene
<0.5
<250
<0.2
<1.5
NA
NA
<0.5
<250
<0.2
<1.5
NA
NA
<0.1
<250
<0.2
<1.5
NA
NA
Methylene Chloride
<0.5
<250
<2
<6.0
<2
<6
<0.5
<250
<2
<6.0
<2
31
<0.5
<250
<2
<6.0
<2
97
Chloroform
3
<250
0.546
1.94
0.429
1.95
<0.5
<250
0.182
0.46
0.184
0.95
<0.5
<250
0.183
0.62
0.128
0.78
Carbon tetrachloride
0.77
<250
0.141
0.59
0.094
0.61
<0.5
<250
0.048
0.15
0.05
0.26
<0.5
<250
0.005
<0.03
<0.005
<0.03
Tetmchloroethene
12,000
35,000
3,782
36,321
3,866
21390
6,600
5,600
1,956
5,251
1,739
13247
6,400
5,500
819
6085
342.8
4327
Trichloroethene
37
<260
7.338
66.24
9.94
24.4
2
<250
1.663
3.06
1.198
7.12
61
<250
12.14
3430
195.95
49.21
1.1.1-Trichloroethane
<0.5
<250
0.066
0.25
0.046
0.19
<0.5
<250
0.023
0.04
MIS
0.06
<0.5
<250
<0.005
<0.03
<0.005
<0.03
1,2-Dichloroethane
<0.5
<250
<0.01
0.04
<0.01
<0.04
<0.5
<250
0.11
<0.04
0.03
<0.04
1.2
<250
0.69
0.73
0.08
0.37
c-1,2-Dichloroethene
14
<250
3.6
16.7
NA
20.7
0.65
<250
1.3
4.8
NA
13.3
100
<250
24.1
67.9
NA
263.6
1,1-Dichloroethene
2.2
<250
0.25 1
1.31 1
0.27 1
0.79
<0.5 1
<250 1
0.25 1
0.68 1
0.24 1
0.87
<0.5 1
<250 1
0.9
3.06
0.51
2.15
um of Detected EPA 601
Compounds
12.018.17
35,000.00
3.797.51
36,422.08
3,879.39
21.438.64
6,603.05
5,600.00
1,962.83
5,261.56
1,741.79
13,269.56
6,562.20
5,500.00
859.03
9588.56
539.605
4,643.1111
Sod vapor lab data wmmary Page 3 of 6 Revised 1 tOO

Table 4
Summary of Soil Vapor Laboratory Analytical Data
W.P. Ballard and Downgradient Properties
Greensboro, North Carolina
Location
SVMP-10
SVMP-11
SVMP-12
Date
1/20/99
1/27/99
11/19/99
03/24/00
6/21/00
919100
1/20/99
1/27/99
11/19199
03/24/00
06/21/00
09/09/00
1/20/99
1/27/99
11/19/99
3/24/00
621/00
919/00
Compound
(mg/ma)
(mg/m')
(mg/ma)
(mg/ma)
(mglm)
(mg/m')
(mg/m)
(mg/m')
(mg/m)
(mg/m)
(mg/ma)
(mglm)
(mg/0)
(mg/ma)
(mglm')
(mg/m)
(mg/m')
(mg/m')
Bromodichloromethane
<0.5
<250
<0.005
<0.03
<0.005
<0.03
<0.5
<250
<0.005
<0.03
<0.005
<0.03
<0.5
<250
<0.005
<0.03
<0.005
<0.03
Bromofonn
<0.5
<250
<0.005
<0.05
<0.005
<0.05
<0.5
<250
<0.005
<0.05
<0.005
<0.05
<0.5
<250
<0.005
<0.05
<0.005
<0.05
2-Chloroethylvinylelher
<0.5
<250
NA
NA
NA
NA
<0.5
<250
NA
NA
NA
NA
<0.5
<250
NA
NA
NA
NA
Dibromochloromethane
<0.5
<250
<0.005
NA
<0.005
<0.04
<0.5
<250
<0.005
NA
<0.005
<0.04
<0.5
<250
<0.005
NA
<0.005
<0.04
Dichlorodifluoromethane
<0.5
<250
<0.005
<0.02
NA
NA
<0.5
<250
<0.005
<0.02
NA
NA
<0.5
<250
<0.005
<0.02
NA
NA
Tdchlorofluoromethane
<0.5
<250
<0.005
NA
<0.005
<0.03
<0.5
<250
<0.005
NA
<0.005
<0.03
<0.5
<250
<0.005
NA
<0.005
<0.03
Vinyl Chloride
<0.5
<250
<3
<6.0
<3
<6
<0.5
<250
<3
<6.0
<3
<6
<0.5
<250
<3
<6.0
<3
18
Chloromethane
<0.5
<250
<1
<2.0
<1
<2
<0.5
<250
<1
<2.0
<1
<2
<0.5
<250
<1
<2.0
<1
<2
Bromomethane
<0.5
<250
<1
<3.0
<1
<3
<0.5
<250
<1
<3.0
<1
<3
<0.5
<250
<1
<3.0
<1
<3
Chloroethane
<0.5
<250
<1
<3.0
NA
<3
<0.5
<250
<1
<3.0
NA
<3
<0.5
<250
<1
<3.0
NA
<3
1,1-Dichloroelhane
<0.5
<250
0.05
0.53
0.03
<0.04
<0.5
<250
0.06
0.45
0.03
<0.04
<0.5
<250
0.01
0.2
<0.01
<0.04
t-1,2-Dichloroethene
<0.5
<250
5.7
16.7
4.4
11.9
<0.5
<250
2
5.6
1.7
5.6
<0.5
<250
0.9
3.6
0.2
2.8
1,2-Dichloropropane
<0.5
<250
<0.01
<0.05
<0.01
<0.05
<0.5
<250
<0.01
<0.05
<0.01
<0.05
<0.5
<250
<0.01
<0.05
<0.01
<0.05
1,1,2-Trichloroethane
<0.5
<250
1.71
5.61
0.73
0.03
1.5
<250
8.363
14.8
5.495
0.1
4
4250
6.074
19.83
0.1
<0.03
1,2-Dibromoethane
<0.5
<250
NA
NA
NA
NA
<0.5
<250
NA
NA
NA
NA
<0.5
<250
NA
NA
NA
NA
Chlorobenzene
<0.5
<250
0.28
<0.3
<0.07
<0.3
<0.5
<250
<0.07
<0.3
<0.07
<0.3
<0.5
<250
<0.07
<0.3
<0.07
<0.3
c-1,3-Dichloropropene
<0.5
<250
<0.01
<0.05
<0.01
<0.05
40.5
<250
<0.01
<0.05
<0.01
<0.05
<0.5
<250
<0.01
<0.05
<0.01
<0.05
t-1,3-Dichloropropene
<0.5
<250
<0.01
<0.05
<0.01
<0.05
<0.5
<250
<0.01
<0.05
<0.01
<0.05
<0.5
<250
<0.01
<0.05
<0.01
<0.05
1,1,2,2-Tetrachlorcethane
<0.5
<250
<0.005
<0.03
<0.005
<0.03
<0.5
<250
<0.005
<0.03
<0.005
<0.03
<0.5
<250
<0.005
<0.03
<0.005
<0.03
1,2-Dichlorobenzene
<0.5
<250
<0.07
<0.4
<0.07
<0.4
<0.5
<250
<0.07
<0.4
<0.07
<0.4
<0.5
<250
<0.07
<0.4
<0.07
<0.4
1,3-Dichlorobenzene
<0.5
<250
<0.07
<0.4
<0.07
<0.4
<0.5
<250
<0.07
<0.4
<0.07
<0.4
<0.5
<250
<0.07
<0.4
<0.07
<0.4
1,4-Dichlorobenzene
<0.5
<250
<0.07
<0.4
<0.05
<0.4
<0.5
<250
<0.07
<0.4
<0.07
<0.4
<0.5
<250
<0.07
<0.4
<0.05
c0.4
1,2,4-Trichlorobenzene
<0.5
<250
<0.2
<1.5
NA
NA
<0.5
<250
<0.2
<1.5
NA
NA
<0.5
<250
<0.2
<1.5
NA
NA
Methylene Chloride
<0.5
<250
<2
<6.0
<2
647
<0.5
<250
<2
<6.0
<2
7
<0.5
<250
<2
<6.0
<2
<6
Chloroform
<0.5
<250
0.159
0.7
0.138
0.53
<0.5
<250
0.128
0.59
0.118
0.56
1.5
<250
0.32
1.4
0.025
0.32
Carbon tetrachloride
<0.5
<250
0.015
0.07
0.01
0.03
1.1
<250
0.284
1.02
0.154
0.9
1.3
<250
0.33
1.27
<0.005
0.08
Telrachloroethene
5,900
11,000
783.44
6085
954
6291
11,000
55,000
4,041
17,687
3,674
15020
12,000
43,000
3,372
22084
486.75
8326
Trichloroethene
200
<250
22.59
8,140
867.06
168.55
120
<250
14.47
114.11
23.545
84.92
80
<250
9.569
47.76
5.903
111.42
1,1,1-Tdchloroethane
<0.5
<250
<0.005
0.03
<0.005
<0.03
2.6
<250
0.684
2.59
0.405
2.07
1.1
<250
0.326
1.29
<0.005
0.07
1,2-Dichloroelhane
<0.5
<250
0.17
0.08
0.02
<0.04
<0.5
<250
0.12
0.08
<0.01
<0.04
<0.5
<250
<0.01
<0.04
<0.01
<0.04
c-1,2-Dichloroethene
620
<250
213.3
1,772
NA
671.4
300
<250
57.96
208.6
NA
254.1
130
<250
27.09
102.5
NA
115.7
1,1-Dichloroelhene
<0.5
<250
3.86
14.22
2.86
6.91
<0.5
<250
1.59
5.09
1.06
4.25
5.7
<250
1.17
4.97
0.03
0.44
Sum of Detected EPA 601
Compounds
6,720.00
11.000.00
1.031.27
16,034.94
1,829.25
7,138.42
11,426.20 1
55.000.00T
4.126.40
18,039.93
3,706.41
15,366.80
12,223.60
43.000.00
3,417.40 1
22266.82
493.008
8,524.03
Sod vapor lab data summary Page 4 of Revised 12/6/00

Table 4
Summary of Soil Vapor Laboratory Analytical Data
W.P. Ballard and Downgradient Properties
Greensboro, North Carolina
Location
SVMP-13
SVMP-14
PTAS
PT-3S
PT-4S
PT-5S
SVE-8 (EW-4)
Dale
03/24/00
06/21/00
03/24/00
06/21/00
06/22/00
09/09/00
03/24/00
06/22/00
09/09/00
03/24/00
06/22/00
09/09/00
03/24/00
06/22/00
09/09/00
03/24/00
06/22/00
09/09/00
Compound
(mglm')
(mg/m')
(mglm')
(mg/m')
(mglm')
(mg/m3)
(mg/0)
(mg/m')
(mg/m3)
(mg/m')
(mg/rn)
(mg/m)
(mg/m')
(mg/m3)
(mglm)m
m'
( g/ )
'
(mglm)
'
(mg/m )
Bromodichloromethane
<0.03
<0.005
<0.03
<0.005
<0.005
<0.03
<0.03
<0.005
<0.03
<0.03
<0.005
<0.03
<0.03
<0.005 <0.03
<0.03
<0.005
<0.03
Bromoform
<0.05
<0.005
<0.05
<0.005
<0.005
<0.05
<0.05
<0.005
<0.05
<0.05
<0.005
<0.05
<0.05
<0.005 <0.05
<0.05
<0.005
<0.05
2-Chloroethylvinylelher
NA
NA
NA
NA
NA
NA
NA
NA
NA
NA
NA
NA
NA
NA NA
NA
NA
NA
Dibromochloromethane
NA
<0.005
NA
<0.005
<0.005
<0.04
NA
<0.005
<0.04
NA
<0.005
<0.04
NA
<0.005 <0.04
NA
<0.005
<0.04
Dichlorodi8uoromethane
<0.02
NA
<0.02
NA
NA
NA
<0.02
NA
NA
<0.02
NA
NA
<0.02
NA NA
<0.02
NA
NA
Trichlorolluoromethane
NA
<0.005
NA
<0.005
<0.005
<0.03
NA
<0.005
<0.03
NA
<0.005
<0.03
NA
<0.005 <0.03
NA
<0.005
<0.03
Vinyl Chloride
<6.0
<3
<6.0
<3
<3
<6
<6.0
<3
<6
<6.0
<3
<6
<6.0
<3 <6
<6.0
<3
<6
Chloromethane
<2.0
<1
<2.0
<1
<1
<2
<2.0
<1
<2
<2.0
<1
<2
<2.0
<1 <2
<2.0
<1
<2
Bromomethane
<3.0
<1
<3.0
<1
<1
<3
<3.0
41
<3
<3.0
<1
<3
<3.0
<1 <3
<3.0
<1
<3
Chloroethane
<3.0
NA
<3.0
NA
NA
<3
<3.0
NA
<3
<3.0
NA
<3
<3.0
NA <3
<3.0
NA
<3
1,1-Dichloroethane
<0.04
<0.01
<0.04
<0.01
<0.01
<0.04
<0.04
<0.01
<0.04
<0.04
<0.01
<0.04
<0.04
<0.01 <0.04
<0.04
<0.01
<0.04
1-1,2-Dichloroethene
<0.4
<0.1
<0.4
<0.1
<0.1
<0.04
<0.4
<0.1
<0.04
<0.4
<0.1
<0.04
<0.4
<0.1 <0.04
<0.4
<0.1
<0.04
1,2-Dichloropropane
<0.05
<0.01
<0.05
<0.01
<0.01
<0.05
<0.05
<0.01
<0.05
<0.05
<0.01
<0.05
<0.05
<0.01 <0.05
<0.05
<0.01
<0.05
1,1,2-Trichloroethane
0.08
0.047
0.09
0.012
<0.005
<0.03
0.05
<0.005
<0.03
0.2
<0.005
<0.03
0.14
0.008 <0.03
0.37
0.117
<0.03
1,2-Dibromoethane
NA
NA
NA
NA
NA
NA
NA
NA
NA
NA
NA
NA
NA
NA NA
NA
NA
NA
Chlorobenzene
<0.3
<0.07
<0.3
<0.07
<0.07
<0.3
<0.3
<0.07
<0.3
<0.3
<0.07
<0.3
<0.3
<0.07 <0.3
<0.3
<0.07
<0.3
c-1,3-Dichloropropene
<0.05
<0.01
<0.05
<0.01
<0.01
<0.05
<0.05
<0.01
<0.05
<0.05
<0.01
<0.05
<0.05
<0.01 <0.05
<0.05
<0.01
<0.05
t-1,3-Dichloropropene
<0.05
<0.01
<0.05
<0.01
<0.01
<0.05
<0.05
<0.01
<0.05
<0.05
<0.01
<0.05
<9.05
<0.01 <0.05
<0.05
<0.01
<0.05
1,1,2,2-Tetrachloroelhane
<0.03
<0.005
<0.03
<0.005
<0.005
<0.03
<0.03
<0.005
<0.03
<0.03
<0.005
<0.03
<0.03
<0.005 <0.03
<0.03
<0.005
<0.03
1,2-Dichlorabenzene
<0.4
<0.07
<0.4
<0.07
<0.07
<0.4
<0.4
<0.07
<0.4
<0.4
<0.07
<0.4
<0.4
<0.07 <0.4
<0.4
<0.07
<0.4
1,3-Dichlorabenzene
<0.4
<0.07
<0.4
<0.07
<0.07
<0.4
<0.4
<0.07
<0.4
<0.4
<0.07
<0.4
<0.4
<0.07 <0.4
<0.4
<0.07
<0.4
1,4-Dichlorabenzene
<0.4
<0.07
<0.4
<0.07
<0.07
<0.4
<0.4
<0.07
<0.4
<0.4
<0.07
<0.4
<0.4
<0.07 <0.4
<0.4
<0.07
<0.4
1,2,4-Trichlorobenzene
<1.5
NA
<1.5
NA
NA
NA
<1.5
NA
NA
<1.5
NA
NA
<1.5
NA NA
<1.5
NA
NA
Methylene Chloride
<6.0
<2
<6.0
<2
<2
<6
<6.0
<2
<6
<6.0
<2
<6
<6.0
<2 <6
<6.0
<2
<6
Chloroform
0.17
0.076
0.18
0.041
<0.005
<0.02
0.14
0.025
0.11
<0.02
<0.005
<0.02
<0.02
<0.005 <0.02
0.1
0.029
0.12
Carbon tetrachloride
<0.03
0.005
<0.03
<0.005
<0.005
<0.03
<0.03
<0.005
<0.03
<0.03
<0.005
<0.03
<0.03
<0.005 <0.03
<0.03
<0.005
<0.03
Tetrachloroethene
4,400
1.749
1,571
145
2
3.03
76.35
1.54
9.38
245.11
0.415
4.58
182.02
2.775 11.26
386.58
116.62
375.14
Trichloroethene
2.21
0.359
0.31
0.036
0.043
<0.03
4.67
0.735
3.46
1.99
0.012
0.23
0.23
<0.005 <0.03
1.55
0.38
1.44
1,1,1-Trichloroethane
<0.03
<0.005
<0.03
<0.005
<0.005
<0.03
<0.03
<0.005
<0.03
<0.03
<0.005
<0.03
<0.03
<0.005 <0.03
<0.03
<0.005
<0.03
1,2-Dichloroethane
<0.04
<0.01
<0.04
<0.01
<0.01
<0.04
<0.04
<0.01
<0.04
<0.04
<0.01
<0.04
<0.04
<0.01 <0.04
0.08
0.03
<0.04
c-1,2-Dichloroethene
4.8
NA
<0.4
NA
NA
<0.4
<0.4
NA
<0A
3.2
NA
<0.4
<0.4
NA <0.4
<0.4
NA
1
1,1-Dichloroethene
<0.04
<0.01
<0.04
<0.01
<0.01
<0.04
<0.04
<0.01
<0.04
<0.04
<0.01
<0.04
0.08
<0.01 <0.04
<0.04
<0.01
<0.04
Sumo Detected EPA 601
Compounds
4,407.26
1,749.79
1,571.58
144.78
2.02
3.03
81.21
2.30
12.95
250.50 1
0.43 1
4.81
182.47 1
2.78 11.26
388.68 1
117.18
377.70
Sol vapor lab data summary Page 5 of 6 Revised I?J6/00

Table 4
Summary of Soil Vapor Laboratory Analytical Data
W.P. Ballard and Downgradient Properties
Greensboro, North Carolina
Location
SVE-9 EW-2
Date
0324/00
0622/00
09/09/00
Compound
(mg/m')
(mg/m)
(mg/m')
Bromodichloromelhane
<0.03
<0.005 <0.03
Bromoform
<0.05
<0.005 <0.05
2-Chloroethylvinylether
NA
NA NA
Dibromochloromethane
NA
<0.005 <0.04
Dichlorodi0uoromethane
<0.02
NA NA
Trichloro0uoromethane
NA
<0.005 <0.03
Vinyl Chloride
<6.0
<3 <6
Chloromelhane
<2.0
<t <2
Bromomethane
<3.0
<1 <3
Chloroethane
<3.0
NA <3
1,1-Dichloroelhane
<0.04
<0.01 <0.04
t-1,2-Dichloroethene
<0.4
<0.1 <0.04
1,2-Dichloropropane
<0.05
<0.01 <0.05
1,1,2-Trichloroethane
0.08
0.007 <0.03
1,2-Dibromoethane
NA
NA NA
Chlorobenzene
<0.3
<0.07 <0.3
c-1,3-Dichloropropene
<0.05
<0.01 <0.05
t-1,3-Dichloropropene
<0.05
<0.01 <0.05
1,1,2,2-Teirachloroethane
<0.03
<0.005 <0.03
1,2-Dichlorobenzene
<0.4
<0.07 <0.4
1,3-Dichlorobenzene
<0.4
<0.07 <0.4
1,4-Dichlorobenzene
<0.4
<0.07 <0.4
1,2,4-Trichlorobenzene
<11.5
NA NA
Methylene Chloride
<6.0
<2 <6
Chloroform
0.08
0.018 <0.02
Carbon tetrachloride
0.03
0.005 <0.03
Tetrachloroelhene
151.08
16.26 8.52
Trichloroethene
4.53
1.11 0.32
1,1,1-Trichloroethane
<0.03
<0.005 <0.03
1,2-Dichloroethane
<0.04
<0.01 <0.04
c-1,2-Dichloroethene
<0.4
NA <0.4
1,1-Dichloroethene
<0.04
<0.01 <0.04
Sum of Detected EPA 601
Compounds
155.80 1
17.40 8.84
Notes: Baseline soil vapor sampling performed in January 1999 analyzed by EPA Method TO3 for the Method 601 compound list.
Compounds detected above the laboratory quantita0on limits shown in bold.Detected compounds shown in bold.
Soil vapor lab data summary - Page 6 of 6 Revised 1216/6e

Table 5
Pre- and Post - Pilot Test Injection Groundwater Data Summary - Phase 1 Area
W.P. Ballard and Downgradient Properties
Greensboro, North Carolina
WELL ID:
MW-1
MW-2
MW-3
M_ W_-4
SAMPLE DATE:
6/22/00
9/7/00
10/19/00
3/22/00
6/23/00
9/8/00
9/14/00
10/ 8/00
3/22/00
6/22/00
9/7/00
10/19/00
EPA 601/602 Compounds: (ug/L)
NCAC 2L
Benzene
1
<1.0
<1.0
NA
<1.0
<1.0
NA
NA
<1.0
<50.0
<1.0
<1.0
<1000
<1.0
<10.0
<1.0
<1000
1,2 Dichlorobenzene
620
<1.0
<1.0
<1.0
<1.0
<1.0
<1.0
<1.0
<1.0
<50.0
<1.0
<1.0
<1000
<1.0
<10.0
<1.0
<1000
1,3 Dichlorobenzene
620
<1.0
<1.0
<1.0
<1.0
<1.0
<1.0
<1.0
<1.0
<50.0
<1.0
<1.0
<1000
<1.0
<10.0
<1.0
<1000<1000
Ethylbenzene
29
<1.0
<1.0
<1.0
<1.0
<1.0
<1.0
NA
<1.0
<50.0
<1.0
<1.0
<1.0
<10.0
<1.0
<1000
Toluene
Toluene
1,000
<1.0
<1.0
<1.0
<1.0
<1.0
<1.0
NA
13.0
75.0
<1.0
<1.0
<1000
<1.0
26.0
<1.0
<1000
m,p-Xylenes
530
<1.0
<1.0
<1.0
<1.0
< 1.0
< 1.0
NA
<1.0
<50.0
<1.0
<1.0
<1000
1.5
18.0
<1.0
<1000
o-Xylenes
530
<1.0
<1.0
<1.0
<1.0
<1.0
<1.0
NA
3.3
<50.0
<1.0
<1.0
<1000
1.0
348.0
<1.0
<1000
Bromo
0.19
<1.0
<1.0
<1.0
<1.0
<1.0
<2.0
<1.0
<1.0
<50.0
<2.0
<1.0
<1000
<1.0
<10.0
<2.0
<1000
Bromometethane
None
<1.0
<1.0
<1.0
<1.0
<1.0
<1.0
<1.0
<1.0
<50.0
<1.0
<1.0
<1000
<1.0
<10.0
<1.0
<1000
Carbon Tetrachloride
0.3
<1.0
<1.0
<1.0
<1.0
<1.0
<1.0
<1.0
3.7
<50.0
<1.0
<1.0
<1000
<1.0
<10.0
<1.0
<1000
Chloroform
0.19
<1.0
<1.0
<1.0
<1.0
<1.0
<1.0
<1.0
9.7
<50.0
<1.0
<1.0
<1000
<1.0
<10.0
<1.0
<1000
meride
None
<1.0
<1.0
<1.0
<1.0
<1.0
<1.0
<1.0
<1.0
<50.0
<1.0
<1.0
<1000
<1.0
<10.0
<1.0
<1000
Vinyl Chloride
Vinyl
0.015
<1.0
<1.0
<1.0
<1.0
<1.0
<1.0
<1.0
<1.0
<50.0
<1.0
<1.0
<1000
<1.0
<10.0
<1.0
<1000
Dibromochlorom ethane
0.41
<1.0
<1.0
<1.0
<1.0
<1.0
<1.0
<1.0
<1.0
<50.0
<1.0
<1.0
<1000
<1.0
<10.0
<1.0
<1000
Ethylene Dibromide
0.0004
<1.0
<1.0
<1.0
<1.0
<1.0
<1.0
<1.0
<1.0
<50.0
<1.0
<1.0
<1000
<1.0
<10.0
<1.0
<1000
1,1-Dichloroethane
700
<1.0
<1.0
<1.0
<1.0
<1.0
<1.0
<1.0
<1.0
<50.0
<1.0
<1.0
<1000
<1.0
<10.0
<1.0
<1000
1,2-Dichloroethane
0.38
<1.0
<1.0
<1.0
<1.0
<1.0
<1.0
<1.0
<1.0
<50.0
<1.0
<1.0
<1000
<1.0
<10.0
<1.0
<1000
1,1-Dichloroethene
7
<1.0
1.0
<1.0
<1.0
<1.0
<1.0
<1.0
3.4
<50.0
<1.0
<1.0
<1000
<1.0
<10.0
<1.0
<1000
cis-1,2-Dichloroethene
70
<1.0
14.7
<1.0
96.7
9.1
<1,0
<1.0
210.0
210.0
<1.0
<1.0
<1000
2.7
2,650
<1.0
<1000
trans- 1,2-Dichloroethene
70
<1.0
<1.0
<1.0
<1.0
<1.0
<1.0
<1.0
3.2
<50.0
<1.0
<1.0
<1000
<1.0
11.0
<1.0
<1000
1,2-Dichloropropane
0.56
<1.0
<1.0
<1.0
<1.0
<1.0
<1.0
<1.0
<1.0
<50.0
<1.0
<1.0
<1000
<1.0
<10.0
<1.0
<1000<1000
trans- 1,3-Dichloropropene
0.2
<1.0
<1.0
<1.0
<1.0
<1.0
<1.0
<1.0
<1.0
<50.0
<1.0
<1.0
<1.0
<10.0
<1.0
<1000
Methylene Chloride
5
<5.0
<5.0
<5.0
<5.0
<5.0
<5.0
<5.0
<5.0
<250
<5.0
<5.0
<5000
<5.0
<50.0
<5.0
<5000
Tetrachloroethene
0.7
3,420
2,540
2240
358
69
72
46
156,000
218,000
154,000
130,000
148,000
13,400
90,500
41,200
54,800
1,1,1-Trichloroethane
200
<1.0
<1.0
<1.0
<1.0
<1.0
<1.0
<1.0
2.0
<50.0
<1.0
<1.0
<1000
<1.0
<10.0
<1.0
<1000
1,1,2-Trichloroethane
None
<1.0
<1.0
<1.0
<1.0
<1.0
<1.0
<1.0
52.5
<50.0
<1.0
<1.0
<1000
<1.0
<10.0
<1.0
<1000
1,1,2,2-Tetrachchloroethane
0.17
<1.0
<1.0
<1.0
<1.0
<1.0
<1.0
<1.0
5.4
<50.0
<1.0
<1.0
<1000
<1.0
<10.0
<1.0
<1000
Trichloroethene
2.8
6.5
<50
3.1
66.7
8.7
<1.0
2.0
<1000
135.0
<1.0
<1.0
<1000
7.6
627.0
<1.0
<1000
TOTAL VOCs
3,427
2,556
2,243
520
86.8
72.0
48.2
156,306
218,420
154,000
130,000
148,000
13,413
94,180
41,200
54,800
Metals: (mg/L)
Iron
300
0.150
0.176
NA
NA
70.400
NA
NA
0.200
<0.050
NA
NA
NA
0.230
2.600
NA
NA
Ferrous Iron
None
<0.100
<0.100
NA
NA
0.190
NA
NA
<0.100
<0.100
NA
NA
NA
<0.100
<0.100
NA
NA
Manganese
50
0.042
0.043
NA
NA
2.710
NA
NA
0.098
0.150
NA
NA
NA
0,541
2.030
NA
NA
Ferric Iron
None
0.150
0.176
NA
NA
70.200
NA
NA
0.200
<0.100
NA
NA
NA
0.230
2.600
NA
NA
Miscellaneous Chemistry: (mg/L)
Chloride
250
NA
NA
NA
NA
NA
NA
<1.0
NA
NA
NA
NA
5.3
NA
NA
NA
1.6
Chemical Oxygen Demand
None
NA
NA
NA
NA
NA
NA
NA
<3.00
3.4
NA
NA
NA
NA
NA
NA
NA
Percent Reduction (VOCs)
25%
1 35%
83%
1 867
91%
-40%
1%
17%
5%
-602%
-207%
-309%
Percent Reduction (PCE)
26%
35%
81 %
80%
87%
-40%
1 %
17%
5%
-575%
-207%
-309%
Notes: Concentrations detected in excess of the NCAC 2L Standard are shown in bold.
Italicized NCAC 2L criteria indicate interim standards imposed by NCDENR
NA denotes compound not analyzed during sampling event
Groundwater samples analyzed for metals prior to injection were collected on 4/24/00
Pilot Injection/Pre vs post injection gw analytical / Phase 1 Wells Page I of 3 Revised: 12/6/00

Table 5
Pre- and Post - Pilot Test Injection Groundwater Data Summary - Phase 1 Area
W.P. Ballard and Downgradient Properties
Greensboro, North Carolina
WELL ID:
MW-5
3i22/00
6/23/00
9/7/00
10/19/00
SAMPLE DATE:
EPA 601/602 Compounds: (ug/L)
NCAC 2L
Benzene
1
<1.0
<10.0
<1.0
NA
1.2 Dichlorobenzene
620
<1.0
<10.0
<1.0
<100
1,3 Dichlorobenzene
620
<1.0
<10.0
<1.0
<100
Ethylbenzene
29
<1.0
<10.0
<1.0
NA
Toluene
1,000
<1.0
<10.0
<1.0
NA
m,p-Xylenes
530
<1.0
<10.0
<1.0
NA
o-Xylenes
530
<1.0
<10.0
<1.0
NA
Bromoform
0.19
<1.0
<10.0
<2.0
<100
Bromomethane
None
<1.0
<10.0
<1.0
<100
Carbon Tetrachloride
0.3
<1.0
<10.0
<1.0
<100
Chloroform
0.19
<1.0
<10.0
<1.0
<100
Chloromethane
None
<1.0
<10.0
<1.0
<100
Vinyl Chloride
0.015
<1.0
<10.0
<1.0
<100
Dibromochloromethane
0.41
<1.0
<10.0
<1.0
<100
Ethylene Dibromide
0.0004
<1.0
<10.0
<1.0
<100
1,1-Dichloroethane
700
<1.0
<10.0
<1.0
<100
1,2-Dichloroethane
0.38
<1.0
<10.0
<1.0
<100
1,1-Dichloroethene
7
6.0
<10.0
<1.0
<100
cis- 1,2-Dichloroethene
70
<1.0
<10.0
<1.0
<100
trans- 1,2-Dichloroethene
70
<1.0
<10.0
<1.0
<100
1,2-Dichloropropane
0.56
<1.0
<10.0
<1.0
<100
trans-1,3-Dichloropropene
0.2
<1.0
<10.0
<1.0
<100
Methylene Chloride
5
<5.0
<50.0
<5.0
<500
Tetrachloroethene
0.7
8,120
8,220
5,880
5,060
1,1,1-Trichloroethane
200
<1.0
<10.0
<1.0
<100
1,1,2-Trichloroethane
None
3.3
<10.0
<1.0
<100
1,1,2,2-Tetrachchloroethane
0.17
<1.0
<10.0
<1.0
<100
Trichloroethene
2.8
4.2
<10.0
<1.0
<100
TOTAL VOCs
8,134
8,220
5,880
5,060
Metals: (mg/L)
Iron
300
0.223
1.110
NA
NA
Ferrous Iron
None
<0.100
<0.1
NA
NA
Manganese
50
0.026
0,095
NA
NA
Ferric Iron
None
0.223
1.110
NA
NA
Miscellaneous Chemistry: (mg/L)
Chloride
250
NA
NA
NA
1.4
Chemical Oxygen Demand
None
NA
NA
NA
NA
Percent Reduction (VOCs)
-1 %
28%
38%
Percent Reduction (PCE)
-1 %
28%
38%
-6
3/22/00
I DW-1
10/19/00 1 3/22/00 1 9/7/00 T 10/19/00 1 3123/0
9/7/00 1 10/18/00
<10.0
<50.0
<50.0
<1.0
<20.0
<50.0
<1.0
<20.0
<1.0
<1000
<10.0
<50.0
<50.0
<1.0
<20.0
<50.0
<1.0
<20.0
<1.0
<1000
<10.0
<50.0
<50.0
<1.0
<20.0
<50.0
<1.0
<20.0
<1.0
<1000
<10.0
<50.0
<50.0
<1.0
<20.0
<50.0
<1.0
<20.0
<1.0
<1000
<10.0
<50.0
<50.0
<1.0
<20.0
<50.0
9.6
<20.0
<1.0
<1000
< 10.0
<50.0
<50.0
<1.0
<20.0
<50.0
<1.0
<20.0
<1.0
<1000
<10.0
<50.0
<50.0
<1.0
<20.0
<50.0
<1.0
<20.0
<1.0
<1000
<10.0
<50.0
<50.0
<1.0
<20.0
<50.0
<1.0
<20.0
<2.0
<1000
<10.0
<50.0
<50.0
<1.0
<20.0
<50.0
<1.0
<20.0
<1.0
<1000
<10.0
<50.0
<50.0
<1.0
<20.0
<50.0
<1.0
<20.0
<1.0
<1000
<10.0
<50.0
<50.0
<1.0
<20.0
<50.0
1.4
<20.0
<1.0
<1000
<10.0
<50.0
<50.0
<1.0
<20.0
<50.0
<1.0
<20.0
<1.0
<1000
<10.0
<50.0
<50.0
<1.0
<20.0
<50.0
<1.0
<20.0
<1.0
<1000
<10.0
<50.0
<50.0
<1.0
<20.0
<50.0
<1.0
<20.0
<1.0
<1000
<10.0
<50.0
<50.0
<1.0
<20.0
<50.0
<1.0
<20.0
<1.0
<1000
<10.0
<50.0
<50.0
16.6
<20.0
<50.0
<1.0
<20.0
<1.0
<1000
<10.0
<50.0
<50.0
<1.0
<20.0
<50.0
<1.0
<20.0
<1.0
<1000
296
445
470
<1.0
26.0
470
<1.0
<20.0
<1.0
<1000
<10.0
<50.0
<50.0
7.6
<20.0
<50.0
7.9
<20.0
<1.0
<1000
<10.0
<50.0
<50.0
<1.0
<20.0
<50.0
<1.0
<20.0
<1.0
<1000
<10.0
<50.0
<50.0
<1.0
<20.0
<50.0
<1.0
<20.0
<1.0
<1000
<10.0
<50.0
<50.0
<1.0
<20.0
<50.0
<1.0
<20.0
<1.0
<1000
<50.0
<250
<250
<5.0
<100
<250
<5.0
<100
<5.0
<5000
101
125
255
358
464
255
73,200
932
27,600
48,800
<10.0
<50.0
<50.0
8.8
<20.0
<50.0
<1.0
<20.0
<1.0
<1000
< 10.0
<50.0
<50.0
<1.0
<20.0
<50.0
<1.0
<20.0
<1.0
<1000
<10.0
<50.0
<50.0
<1.0
<20.0
<50.0
<1.0
<20.0
<1.0
<1000
<10.0
<50.0
<50.0
11.2
<20.0
<50.0
32.5
<20.0
<1.0
<1000
397
570
725
402
490
725
73,251
932
27,600
48,800
NA
NA
NA
NA
NA
NA
0.140
<0.0500
NA
NA
NA
NA
NA
NA
NA
NA
<0.10C
<0.100
NA
NA
NIA
NA
NA
NA
NA
NA
0.017
29.200
NA
NA
NA
NA
NA
NA
NA
NA
0.140
<0.100
NA
NA
NA
NA
1.6
NA
NA
1.6
NA
NA
NA
37.0
NA
NA
NA
NA
NA
NA
6.3
<30.0
NA
NA
Notes: Concentrations detected in excess of the NCAC 2L Standard are shown in bold.
Italicized NCAC 2L criteria indicate interim standards imposed by NCDENR
NA denotes compound not analyzed during sampling event
Groundwater samples analyzed for metals prior to injection were collected on 4/24/00
Pilot Injection/Pre vs post injection gvv analytical / Phase 1 Wells Page 2 of 3 Revised: 12/6/00

Table 5
Pre- and Post - Pilot Test Injection Groundwater Data Summary - Phase 1 Area
W.P. Ballard and Downgradient Properties
Greensboro, North Carolina
WELL ID:
DW4
BMW-1
BMW-2
SAMPLE DATE:
3/23/00
6/22/00
9/14100
10/19/00
3/23/00
6/23/00
9/7/00
10/18/00
3/23/00
6/22/00
9/7/00
10/18/00
EPA 601/602 Compounds: (ug/L)
NCAC 2L
Benzene
1
<1.0
<10.0
NA
NA
<1.0
<1.0
<1.0
<1.0
<1.0
<1.0
<1.0
<1000
1,2 Dichlorobenzene
620
<1.0
<10.0
<1.0
<50.0
<1.0
<1.0
<1.0
<1.0
<1.0
<1.0
<1.0
<1000
1.3 Dichlorobenzene
620
<1.0
<10.0
<1.0
<50.0
<1.0
<1.0
<1.0
<1.0
<1.0
<1.0
<1.0
<1000
Ethylbenzene
29
<1.0
<10.0
NA
NA,
<1.0
<1.0
<1.0
<1.0
<1.0
<1.0
<1.0
<1000
Toluene
1,000
<1.0
<10.0
NA
NA
<1.0
<1.0
<1.0
<1.0
3.1
4.5
<1.0
<1000
m,p-Xytenes
530
<1.0
<10.0
NA
NA
<1.0
<1.0
<1.0
<1.0
<1.0
<1.0
<1.0
<1000
o-Xylenes
530
<1.0
<10.0
NA
NA
<1.0
<1.0
<1.0
<1.0
1.1
<1.0
<1.0
<1000
Bromoform
0.19
<1.0
<10.0
<1.0
<50.0
<1.0
<1.0
<2.0
<2.0
<1.0
<1.0
<2.0
<1000
Bromomethane
None
<1.0
<10.0
<1.0
<50.0
<1.0
<1.0
<1.0
<1.0
<1.0
<1.0
<1.0
<1000
Carbon Tetrachloride
0.3
<1.0
<10.0
<1.0
<50.0
<1.0
<1.0
<1.0
<1.0
<1.0
<1.0
<1.0
<1000
Chloroform
0.19
<1.0
<10.0
<1.0
<50.0
<1.0
<1.0
<1.0
<1.0
<1.0
<1.0
<1.0
<1000
Chloromethane
None
<1.0
<10.0
<1.0
<50.0
<1.0
<1.0
<1.0
<1.0
<1.0
<1.0
<1.0
<1000
Vinyl Chloride
0.015
<1.0
<10.0
<1.0
<50.0
<1.0
2.1
<1.0
<1.0
<1.0
<1.0
<1.0
<1000
Dibromochloromethane
0.41
<1.0
<10.0
<1.0
<50.0
<1.0
<1.0
<1.0
<1.0
<1.0
16.5
<1.0
<1000
Ethylene Dibromide
0.0004
<1.0
<10.0
<1.0
<50.0
<1.0
<1.0
<1.0
<1.0
<1.0
<1.0
<1.0
<1000
1,1-Dichloroethane
700
<1.0
< 10.0
<1.0
<50.0
<1.0
<1.0
<1.0
<1.0
<1.0
<1.0
<1.0
<1000
1,2-Dichloroethane
0.38
<1.0
<10.0
<1.0
<50.0
<1.0
<1.0
<1.0
<1.0
<1.0
<1.0
<1.0
<1000
1,1-Dichloroethene
7
<1.0
<10.0
<1.0
<50.0
<1.0
1.7
<1.0
<1.0
19.7
21.0
<1.0
<1000
cis- 1,2-Dichloroethene
70
8.7
<10.0
<1.0
<50.0
<1.0
1.9
<1.0
<1 A
<1.0
<1.0
<1.0
<1000
trans-1,2-Dichloroethene
70
<1.0
<10.0
<1.0
<50.0
4.0
5.6
<1.0
<1.0
4.9
<1.0
<1.0
<1000
1,2-Dichloropropane
0.56
<1.0
<10.0
<1.0
<50.0
<1.0
<1.0
<1.0
<1.0
<1.0
<1.0
<1.0
<1000
trans- 1,3-Dichloropropene
0.2
<1.0
<10.0
<1.0
<50.0
<1.0
<1.0
<1.0
<1.0
<1.0
<1.0
<1.0
<1000
Methylene Chloride
5
<5.0
<50.0
<5.0
<250
<5.0
<5.0
<5.0
<5.0
<1.0
<5.0
<5.0
<5000
Tetra chloroethene
0.7
24,900
20,000
<1.0
<50.0
1,670
1,380
802
380
110,000
90,500
45,700
53,500
1,1,1-Trichloroethane
200
<1.0
<10.0
<1.0
<5G.0
<1.0
<1.0
<1.0
<1.0
4.1
<1.0
<1.0
<1000
1,1,2-Trichloroethane
None
<1.0
<10.0
<1.0
<50.0
<1.0
<1.0
<1.0
<1.0
<1.0
<1.0
<1.0
<1000
1,1,2,2-Tetrachchloroethane
0.17
<1.0
<10.0
<1.0
<50.0
<1.0
<1.0
<1.0
<1.0
<1.0
<1.0
<1.0
<1000
Trichloroethene
2.8
20.4
<10.0
<1.0
<50.0
39.9
81.9
52.0
28.0
70.1
38.3
<1.0
<1000
TOTAL VOCs
24,929
20,000
0
0
1,714
1,473
854
408
110,103
90,580
45,700
53,500
Metals: (mg/L)
Iron
300
0.347
0.693
NA
Nik
0.680
10.800
NA
NA
0.105
0.100
NA
NA
Ferrous Iron
None
<0.100
<0.100
NA
NA
0.170
0.490
NA
NA
<0.100
<0.100
NA
NA
Manganese
50
0.017
4.940
NA
NA
<0.100
0.210
NA
NA
0.031
0.017
NA
NA
Ferric Iron
None
0.347
0.693
NA
Nib
0.510
10.300
NA
NA
0.105
0.100
NA
NA
Miscellaneous Chemistry: (mg/L)
Chloride
250
NA
NA
NA
<50.0
NA
NA
NA
2.8
NA
NA
NA
2.7
Chemical Oxygen Demand
None
NA
NA
NA
NA
<3.00
41.2
NA
NA
NA
NA
NA
NA
Percent Reduction (VOCs)
20%
100%
100%
14%
50%
76%
JJ
18%
58%
51 %
Reduction (PCE)
'EEMPercent
20%
100%
10G%
17%
52%
77%
18%
58%
51 %
Notes: Concentrations detected in excess of the NCAC 2L Standard are shown in bold.
Italicized NCAC 2L criteria indicate interim standards imposed by NCDENR
NA denotes compound not analyzed during sampling event
Groundwater samples analyzed for metals prior to injection were collected on 4/24/00
Pilot Injection/Pre vs post injection gw analytical / Phase 1 Wells Page 3 of 3 Revised: 1216/00

Table 6
Pre- and Post- Pilot Test Injection Groundwater Data Summary - Phase 2 Area
W.P. Ballard and Downgradient Properties
Greensboro, North Carolina
WELL ID: HVDP13 SAMPLE DATE: I 3/23/00 1 6/22/ Owl 9/8/00 3/23/00 1 6/22/00 -1 9/9/00 3/23/00 S 6//22 00 -4 9/8/00 3/23/00 1 6/23/ 01 9/8/00 I
EPA 601/602 Compounds: (ug/L)
NCAC 2
Benzene
1
370.0
531.0
<1.0
<1.0
1.9
<1.0
7.6
21.6
<1.0
<1.0
<10.0
<1.0
1,2 Dichlorobenzene
620
<1.0
<10.0
<1.0
<1.0
<1.0
<1.0
<1.0
<1.0
<1.0
<1.0
<10.0
<1.0
1,3 Dichlorobenzene
620
<1.0
<10.0
<1.0
<1.0
<1.0
<1.0
<1.0
<1.0
<1.0
<1.0
<10.0
<1.0
Ethylbenzene
29
23.6
42.0
<1.0
<1.0
<1.0
<1.0
<1.0
2.0
<1.0
<1.0
<10.0
<1.0
Toluene
1,000
710.0
595.0
<1.0
<1.0
<1.0
<1.0
<1.0
2.1
<1.0
<1.0
<10.0
<1.0
m, p-Xylenes
530
99.0
143.0
<1.0
<1.0
<1.0
<1.0
<1.0
4.7
<1.0
<1.0
<10.0
<1.0
o-Xylene
530
360.0
237.0
<1.0
<1.0
<1.0
<1.0
1.0
2.6
<1.0
<1.0
<10.0
<1.0
Total Xylenes
530
459.0
<10.0
<1.0
<1.0
<1.0
<1.0
1.0
<1.0
<1.0
<1.0
<10.0
<1.0
Bromoform
0.19
<1.0
<10.0
<2.0
<1.0
<1.0
<1.0
<1.0
<1.0
<2.0
<1.0
<10.0
<1.0
Bromomethane
None
<1.0
<10.0
<1.0
<1.0
<1.0
<1.0
<1.0
<1.0
<1.0
<1.0
<10.0
<1.0
Carbon Tetrachloride
0.3
<1.0
<10.0
<1.0
37.4
30.2
<1.0
<1.0
<1.0
<1.0
<1.0
<10.0
<1.0
Chloroform
0.19
9.3
17.0
<1.0
20.4
22.0
<1.0
<1.0
3.5
<1.0
5.3
<10.0
<1.0
Chloromethane
None
<1.0
<10.0
<1.0
<1.0
<1.0
<1.0
<1.0
<1.0
<1.0
<1.0
<10.0
<1.0
Vinyl Chloride
0.015
<1.0
<10.0
<1.0
<1.0
<1.0
<1.0
<1.0
<1.0
<1.0
<1.0
<10.0
<1.0
Dibromochloromethane
0.41
<1.0
20.0
<1.0
<1.0
<1.0
<1.0
<1.0
6.7
<1.0
<1.0
<10.0
<1.0
Ethylene Dibromide
0.0004
10.7
<10.0
<1.0
<1.0
<1.0
<1.0
<1.0
1.3
<1.0
<1.0
<10.0
<1.0
1,1-Dichloroethane
700
<1.0
<10.0
<1.0
<1.0
<1.0
<1.0
<1.0
<1.0
<1.0
<1.0
<10.0
<1.0
1,2-Dichloroethane
0.38
61.6
70.0
<1.0
<1.0
<1.0
<1.0
5.0
11.3
<1.0
10.0
<10.0
<1.0
1,1-Dichloroethene
7
<1.0
<10.0
<1.0
<1.0
<1.0
<1.0
<1.0
<1.0
<1.0
<1.0
<10.0
<1.0
cis-1,2-Dichloroethene
70
30.6
21.0
<1.0
15.5
13.9
<1.0
3.2
4.0
<1.0
4.0
<110.0
<1.0
trans-1,2-Dichloroethene
70
<1.0
<10.0
<1.0
<1.0
<1.0
<1.0
<1.0
<1.0
<1.0
<1.0
<10.0
<1.0
1,2-Dichloropropane
0.56
<1.0
<10.0
<1.0
<1.0
<1.0
<1.0
<1.0
<1.0
<1.0
<1.0
<10.0
<1.0
trans-1,3-Dichloropropene
0.2
<1.0
<10.0
<1.0
<1.0
<1.0
<1.0
<1.0
<1.0
<1.0
<1.0
<10.0
<1.0
Methylene Chloride
5
<5.0
<50.0
<5.0
<5.0
<5.0
<5.0
<5.0
<5.0
<5.0
<5.0
<50.0
<5.0
Tetrachloroethene
0.7
57,500
53,000
16,700
440
660
180
20,000
24,200
13,200
9,150
4,500
1,090
1, 1, 1 -Trich loroethan e
200
<1.0
<10.0
<1.0
<1.0
<1.0
<1.0
<1.0
<1.0
<1.0
<1.0
<10.0
<1.0
1, 1, 2-Trich loroethane
None
60.2
47.0
<1.0
<1.0
<1.0
<1.0
7.0
7.0
<1.0
8.7
<10.0
<1.0
1,1,2,2-Tetrachloroethane
0.17
3.1
<10.0
<1.0
<1.0
<1.0
<1.0
<1.0
<1.0
<1.0
<1.0
<10.0
<1.0
Trichloroethene
2.8
65.9
77.0
<1.0
3,630.0
4,720.0
150.0
57.2
33.9
<1.0
185.0
133.0
<1.0
Methyl ter -butyl ether
200
NA
NA
NA
NA
NA
NA
NA
NA
NA
NA
NA
NA
TOTAL VOCS
57,741.4
53,252.0
16,700
4,105.9
5,415.9
330.0
20,072.4
24,267.7
13,200.0
9,363.0
4,633.0
1,090.0
Metals: (mg/L)
Iron
300
NA
20.100
NA
NA
0.201
NA
NA
2.860
NA
NA
1.150
NA
Ferrous Iron
None
NA
<0.100
NA
NA
<0.100
NA
NA
<0.100
NA
NA
<0.100
NA
Manganese
50
NA
0.362
NA
NA
0.031
NA
NA
0.081
NA
NA
0.022
NA
Ferric Iron
None
NA
1 20.100
NA
NA
0.201
NA
NA
2.860
NA
NA
1.150
NA
Miscellaneous Chemistry: (mg/L)
Chemical Oxygen Demand
None
<3.00
<3.00
NA
<3.00
<3.00
NA
NA
NA
NA
NA
NA
NA
Percent Reduction (VOCs)
8%
71%
-32%
9 2 %
-21%
34%
51%
88%
Percent Reduction PCE
8%
71%
-50%
59%
-212L
34%
51%
88%
Notes: Concentrations detected in excess of the NCAC 2L Standard are shown in bold.
Italicized NCAC 2L criteria indicate interim standards imposed by NCDENR
NA denotes compound not analyzed during sampling event
Groundwater samples analyzed for metals prior to injection were collected on 4/24/00
Pilot Injection/Pre vs post injection gw analytical / Phase 2 Wells Page 3 of 3 Revised: 1216/00

Table 6
Pre- and Post- Pilot Test Injection Groundwater Data Summary - Phase 2 Area
W.P. Ballard and Downgradient Properties
Greensboro, North Carolina
WELL ID:
PT-1D
PT-2D
PT-3D
PT-4D
PT-5D
3/23/00
6/22/00
9/6/00
3/23/00
6/22/00
9/8/00
3/23/00
6/23/00
9/9/00
3/23/00
6/22/00
9/9/00
3/23/00
6/23/00
9/8/00
SAMPLE DATE:
EPA 601/602 Compounds: (ug/L)
NCAC2L
Benzene
1
<1.0
<1.0
NA
<1.0
2.0
<1.0
<1.0
<100
NA
<1.0
<500
NA
150.0
704.0
800.0
1,2 Dichlorobenzene
620
<1.0
<1.0
<1.0
<1.0
<1.0
<1.0
<1.0
<100
<1.0
<1.0
<1.0
<1.0
<1.0
<10.0
<1.0
1,3 Dichlorobenzene
620
<1.0
<1.0
<1.0
<1.0
<1.0
<1.0
<1.0
<100
<1.0
<1.0
<1.0
<1.0
<1.0
<10.0
<1.0
Ethylbenzene
29
<1.0
<1.0
<1.0
<1.0
<1.0
<1.0
<1.0
<100
<1.0
<1.0
<1.0
<1.0
7.6
51.0
<1.0
Toluene
1,000
<1.0
<1.0
<1.0
<1.0
1.4
<1.0
<1.0
<100
<1.0
<1.0
<1.0
<1.0
410.0
550.0
600.0
m, p-Xylenes
530
<1.0
<1.0
<1.0
<1.0
<1.0
<1.0
<1.0
<100
<1.0
<1.0
<1.0
<1.0
43.7
214.0
<1.0
o-Xylene
530
<1.0
<1.0
<1.0
<1.0
<1.0
<1.0
<1.0
<100
<1.0
<1.0
<1.0
<1.0
46.8
132.0
<1.0
Total Xylenes
530
<1.0
<1.0
<1.0
<1.0
<1.0
<1.0
<1.0
<100
<1.0
<1.0
<1.0
<1.0
90.5
<10.0
<1.0
Bromoform
0.19
<1.0
<1.0
<2.0
<1.0
<1.0
<2.0
<1.0
<100
<1.0
<1.0
<1.0
<1.0
<1.0
<10.0
<1.0
Bromomethane
None
<1.0
<1.0
<1.0
<1.0
<1.0
<1.0
<1.0
<100
<1.0
<1.0
<1.0
<1.0
<1.0
<10.0
<1.0
Carbon Tetrachloride
0.3
4.4
1.9
<1.0
1.8
<1.0
<1.0
149.0
<100
<1.0
15.2
14.8
<1.0
<1.0
<10.0
<1.0
Chloroform
0.19
1.7
4.4
<1.0
<1.0
2.5
<1.0
26.5
<100
<1.0
11.1
11.7
<1.0
2.3
14.0
<1.0
Chloromethane
None
<1.0
<1.0
<1.0
<1.0
<1.0
<1.0
<1.0
<100
<1.0
<1.0
<1.0
<1.0
<1.0
<10.0
<1.0
Vinyl Chloride
0.015
<1.0
<1.0
<1.0
<1.0
<1.0
<1.0
<1.0
<100
<1.0
1.0
3.4
<1.0
<1.0
<10.0
<1.0
Dibromochloromethane
0.41
<1.0
1.1
<1.0
<1.0
<1.0
<1.0
<1.0
<100
<1.0
<1.0
<1.0
<1.0
<1.0
10.0
<1.0
Ethylene Dibromide
0.0004
<1.0
<1.0
<1.0
<1.0
<1.0
<1.0
<1.0
<100
<1.0
<1.0
<1.0
<1.0
5.7
<10.0
<1.0
1,1-Dichloroethane
700
<1.0
<1.0
<1.0
<1.0
<1.0
<1.0
<1.0
<100
<1.0
<1.0
<1.0
<1.0
<1.0
<10.0
<1.0
1,2-Dichloroethane
0.38
<1.0
<1.0
<1.0
<1.0
1.6
<1.0
<1.0
<100
<1.0
<1.0
<1.0
<1.0
27.5
54.0
<1.0
1, 1 -Dichloroethene
7
<1.0
<1.0
<1.0
<1.0
<1.0
<1.0
<1.0
<100
<1.0
3.8
6.3
<1.0
<1.0
<10.0
<1.0
cis-1,2-Dichloroethene
70
1.4
<1.0
<1.0
<1.0
<1.0
<1.0
21.6
<100
<1.0
1,750.0
2,150.0
1,150.0
25.2
69.0
<1.0
trans-1,2-Dichloroethene
70
<1.0
<1.0
<1.0
<1.0
<1.0
<1.0
<1.0
<100
<1.0
11.4
2.8
<1.0
<1.0
<10.0
<1.0
1,2-Dichloropropane
0.56
<1.0
<1.0
<1.0
<1.0
<1.0
<1.0
<1.0
<100
<1.0
<1.0
<1.0
<1.0
<1.0
<10.0
<1.0
trans-1,3-Dichloropropene
0.2
<1.0
<1.0
<1.0
<1.0
<1.0
<1.0
<1.0
<100
<1.0
<1.0
9.7
<1.0
<1.0
<10.0
<1.0
Methylene Chloride
5
<5.0
<5.0
<5.0
<5.0
<5.0
<5.0
<5.0
<500
<5.0
<5.0
<5.0
<5.0
<5.0
<50.0
<5.0
Tetrachloroethene
0.7
5,800
4,620
3,510
5,510
5,500
2,440
500
<100
140.0
2,150
650
1,350.0
37,000
61,500
18,300
1, 1, 1 -Trich loroethan e
200
<1.0
<1.0
<1.0
<1.0
<1.0
<1.0
<1.0
<100
<1.0
<1.0
<1.0
<1.0
<1.0
<10.0
<1.0
1,1,2-Trichloroethane
None
1.2
<1.0
<1.0
1.8
<1.0
<1.0
<1.0
<100
<1.0
2.2
<1.0
<1.0
16.6
<10.0
<1.0
1,1,2,2-Tetrachloroethane
0.17
<1.0
<1.0
<1.0
<1.0
<1.0
<1.0
<1.0
<100
<1.0
<1.0
<1.0
<1.0
<1.0
<10.0
<1.0
Trichloroethene
2.8
1,950.0
125.0
210.0
25.4
30.3
<1.()
5,200.0
8,210.0
6,390
16,400
18,400
15,400
67.5
53.0
<1.0
Methyl ter -butyl ether
200
NA
NA
NA
NA
NA
NA
NA
NA
NA
NA
NA
NA
NA
NA
NA
TOTAL VOCS
7,754.3
4,750.5
3,720.0
5,537.2
5,534.4
2,440.0
5,748.1
8,210.0
6,530.0
20,329.5
21,233.9
17,900.0
37,144.8
61,700.0
19,700.0
Metals: (mg/L)
Iron
300
NA
2.130
NA
NA
0.174
NA
NA
19.700
NA
NA
15.100
NA
NA
2.380
NA
Ferrous Iron
None
NA
<0.100
NA
NA
<0.100
NA
NA
1.300
NA
NA
<0.100
NA
NA
<0.100
NA
Manganese
50
NA
0.062
NA
NA
0.122
NA
NA
0.513
NA
NA
1.190
NA
NA
0.136
NA
Ferric Iron
None
NA
1 2.130
NA
NA
0.174
NA
NA
18.400
NA
NA
15.100
NA
NA
2.380
NA
Miscellaneous Chemistry: (mg/L)
Chemical Oxygen Demand
None
NA
NA
NA
NA
NA
NA
<3.00
<3.00
NA
NA
NA
NA
NA
NA
NA
Percent Reduction (VOCs)
39%
52%
0%
56%
M
-43%
-14%
-4%
12%
-66%
47%
Percent Reduction PCE
20%
390%
0%
560/,
90%
72%
70%
37%
-66%
1 51%
Notes: Concentrations detected in excess of the NCAC 2L Standard are shown in bold.
Italicized NCAC 2L criteria indicate interim standards imposed by NCDENR
NA denotes compound not analyzed during sampling event
Groundwater samples analyzed for metals prior to injection were collected on 4/24/00
Pilot Injection/Pre vs post injection gw analytical / Phase 2 Wells Page 2 of 3 Revised: 12/6/00

Table 6
Pre- and Post- Pilot Test Injection Groundwater Data Summary - Phase 2 Area
W.P. Ballard and Downgradient Properties
Greensboro, North Carolina
WELL ID:
PT-1S
PT-2S
PT-3S
PT-4S
PT-5S
3/23/00
6/22/00
9/12/00
3/23/00
6/22/00
9/8/00
3/23/00
6/22/00
9/12/00
3/23/00
6/22/00
9/12/00
3/23/00
6/22/00
9/11/00
SAMPLE DATE:
EPA 601/602 Compounds: (ug/L)
NCAC 2L
Benzene
1
NA
3.0
<1.0
310.0
NA
NA
<1.0
<1.0
<1.0
<1.0
<100
<1.0
2.2
<10.0
<1.0
1,2 Dichlorobenzene
620
NA
<1.0
<1.0
<1.0
NA
NA
<1.0
<1.0
<1.0
<1.0
<100
<1.0
<1.0
<10.0
<1.0
1,3 Dichlorobenzene
620
NA
<1.0
<1.0
<1.0
NA
NA
<1.0
<1.0
<1.0
<1.0
<100
<1.0
<1.0
<10.0
<1.0
Ethylbenzene
29
NA
<1.0
<1.0
5.6
NA
NA
<1.0
<1.0
<1.0
<1.0
<100
<1.0
<1.0
<10.0
<1.0
Toluene
1,000
NA
<1.0
<1.0
51.0
NA
NA
<1.0
<1.0
<1.0
<1.0
<100
<1.0
<1.0
<10.0
<1.0
m, p-Xylenes
530
NA
<1.0
<1.0
52.9
NA
NA
<1.0
<1.0
<1.0
<1.0
<100
<1.0
<1.0
<10.0
<1.0
o-Xylene
530
NA
<1.0
<1.0
37.7
NA
NA
<1.0
<1.0
<1.0
<1.0
<100
<1.0
<1.0
<10.0
<1.0
Total Xylenes
530
NA
<1.0
<1.0
90.6
NA
NA
<1.0
<1.0
<1.0
<1.0
<100
<1.0
<1.0
<10.0
<1.0
Bromoform
0.19
NA
<1.0
<1.0
<1.0
NA
NA
<1.0
<1.0
<1.0
<1.0
<100
<1.0
<1.0
<10.0
<1.0
Bromomethane
None
NA
<1.0
<1.0
<1.0
NA
NA
<1.0
<1.0
<1.0
<1.0
<100
<1.0
<1.0
<10.0
<1.0
Carbon Tetrachloride
0.3
NA
<1.0
<1.0
<1.0
NA
NA
<1.0
<1.0
<1.0
2.5
<100
<1.0
<1.0
<10.0
<1.0
Chloroform
0.19
NA
6.5
<1.0
69.5
NA
NA
20.6
15.8
<1.0
4.3
<100
<1.0
5.2
<10.0
<1.0
Chloromethane
None
NA
<1.0
<1.0
<1.0
NA
NA
<1.0
<1.0
<1.0
<1.0
<100
<1.0
<1.0
<10.0
<1.0
Vinyl Chloride
0.015
NA
<1.0
<1.0
<1.0
NA
NA
<1.0
<1.0
<1.0
<1.0
<100
<1.0
<1.0
<10.0
<1.0
Dibromochloromethane
0.41
NA
1.3
<1.0
<1.0
NA
NA
<1.0
2.0
<1.0
<1.0
<100
<1.0
<1.0
<10.0
<1.0
Ethylene Dibromide
0.0004
NA
1.8
<1.0
<1.0
NA
NA
<1.0
<1.0
<1.0
<1.0
<100
<1.0
<1.0
<10.0
<1.0
1,1-Dichloroethane
700
NA
<1.0
<1.0
<1.0
NA
NA
<1.0
<1.0
<1.0
<1.0
<100
<1.0
<1.0
<10.0
<1.0
1,2-Dichloroethane
0.38
NA
25.3
<1.0
72.2
NA
NA
3.6
3.6
<1.0
<1.0
<100
<1.0
<1.0
<10.0
<1.0
1,1-Dichloroethene
7
NA
<1.0
<1.0
<1.0
NA
NA
<1.0
<1.0
<1.0
4.4
<100
<1.0
<1.0
<10.0
<1.0
cis-1,2-Dichloroethene
70
NA
3.5
<1.0
8.6
NA
NA
34.3
16.9
<1.0
5,800.0
1,470.0
1,700
<500
<10.0
<1.0
trans-1,2-Dichloroethene
70
NA
<1.0
<1.0
<1.0
NA
NA
<1.0
<1.0
<1.0
8.5
<100
<1.0
<1.0
<10.0
<1.0
1,2-Dichloropropane
0.56
NA
<1.0
<1.0
<1.0
NA
NA
<1.0
<1.0
<1.0
<1.0
<100
<1.0
<1.0
<10.0
<1.0
trans-1,3-Dichloropropene
0.2
NA
<1.0
<1.0
<1.0
NA
NA
<1.0
<1.0
<1.0
<1.0
<100
<1.0
<1.0
<10.0
<1.0
Methylene Chloride
5
NA
<5.0
<5.0
<5.0
NA
NA
<5.0
<5.0
<5.0
<5.0
<500
<5.0
<5.0
<10.0
<5.0
Tetrachloroethene
0.7
NA
1,830
2,770
12,100
NA
NA
6,400
660
2,520
180
<100
<1.0
40,400
3,340
10,600
1, 1, 1 -Trich loroethane
200
NA
<1.0
<1.0
<1.0
NA
NA
<1.0
<1.0
<1.0
<1.0
<100
<1.0
<1.0
<10.0
<1.0
1,1,2-Trichloroethane
None
NA
7.8
<1.0
11.5
NA
NA
3.6
2.7
<1.0
<1.0
<100
<1.0
37.4
<10.0
<1.0
1,1,2,2-Tetrachloroethane
0.17
NA
<1.0
<1.0
<1.0
NA
NA
<1.0
<1.0
<1.0
<1.0
<100
<1.0
2.1
<10.0
<1.0
Trichloroethene
2.8
NA
91.9
<1.0
100.0
NA
NA
2,650
795.0
1,140
2,290.0
810.0
890
39.1
<10.0
<1.0
Methyl ter -butyl ether
200
NA
NA
NA
NA
NA
NA
NA
NA
NA
NA
NA
NA
NA
NA
NA
TOTAL VOCS
1,971.1
2,770.0
12,909.6
9,112.1
1,496.0
3,660.0
8,287.2
2,280.0
2,590.0
40,483.8
3,340.0
10,600.0
Metals: (mg/L)
Iron
300
NA
32.000
NA
NA
NA
NA
NA
69.000
NA
NA
25.700
NA
NA
74.500
NA
Ferrous Iron
None
NA
<0.100
NA
NA
NA
NA
NA
<0.100
NA
NA
<0.100
NA
NA
<0.100
NA
Manganese
50
NA
2.610
NA
NA
NA
NA
NA
3.760
NA
NA
5.280
NA
NA
2.650
NA
Ferric Iron
None
NA
32.000
NA
NA
NA
NA
NA
69.000
NA
NA
25.700
NA
NA
74.500
NA
Miscellaneous Chemistry: (mg/L)
Chemical Oxygen Demand
None
NA
NA
NA
<3.00
NA
NA
NA
NA
NA
NA
NA
NA
NA
NA
NA
Percent Reduction (VOCs)
84%
6057.
72%
69%
92%
74%
Percent Reduction PCE
90%
61 %
72%
99%
92%
92%
Notes: Concentrations detected in excess of the NCAC 2L Standard are shown in bold.
Italicized NCAC 2L criteria indicate interim standards imposed by NCDENR
NA denotes compound not analyzed during sampling event
Groundwater samples analyzed for metals prior to injection were collected on 4/24/00
Pilot Injection/Pre vs post injection gw analytical / Phase 2 Wells Page 'I of 3 Revised: 1216/00

TABLE 7
Historical Groundwater Analytical Data Summary - Shallow Wells
W. P. Ballard and Downgradient Properties
Greensboro, North Carolina
Sample Location:
MW-1
MW-2
5/29/92 A
7/22/94 A
07/11/96 A
12/02/98 B
10/28/99 B
3/22/00 B
9/6/00 B
5/29/92 A
7/22/94 A
07/12/96 A
12/02/98 B
10/27/99 B
3/22/00 B
9/7/00
1 10/19/00 B
Sample Date:
Analyte
NCAC 2L
Benzene (ug/L)
1.0
NA
NA
NA
<100
<50
<1.0
NA
NA
NA
NA
<100
<1.0
<1.0
NA
<1
Ethylbenzene (ug/L)
29
NA
NA
NA
<100
<50
<1.0
NA
NA
NA
NA
<100
<1.0
<1.0
NA
<1
Methylene Chloride (ug/L)
5.0
<1,000
<100
<1,200
<500
<250
<5.0
<5.0
540
<100
<250
<500
<5.0
<5.0
<50
<5
Chloroform (ug/L)
0.19
<1,000
<100
<250
<100
<50
<1.0
<1.0
<200
<100
<50
<100
<1.0
<1.0
<10.0
<1
Chloromethane(ug/L)
none
<1,000
<100
<250
<100
<50
<1.0
<1.0
<200
<100
<50
<100
<1.0
<1.0
<10.0
<1
Carbon Tetrachloride (ug/L)
0.3
<1,000
<100
<250
<100
<50
<1.0
<1.0
<200
<100
<50
<100
<1.0
<1.0
<10.0
<1
1,1-Dichloroethane (ug/L)
700
<1,000
<100
<250
<100
<50
<1.0
<1.0
<200
<100
<50
<100
<1.0
<1.0
<10.0
<1
1,2-Dichloroethane (ug/L)
0.38
<1,000
<100
<250
<100
<50
<1.0
<1.0
<200
<100
<50
<100
<1.0
<1.0
<10.0
<1
1,1-Dichloroethene (ug/L)
7.0
<1,000
<100
<250
<100
<50
<1.0
<1.0
<200
<100
<50
<100
<1.0
<1.0
<10.0
<1
cis-1,2-Dichloroethene (ug/L)
70
<1,000
<100
<250
<100
<50
<1.0
<1.0
<200
<100
<50
<100
1,070
95.7
<10.0
<1
trans- l,2-Dichloroethene (ug/L)
70
<1,000
<100
<250
<100
<50
<1.0
<1.0
<200
<100
<50
<100
14.4
<1.0
<10.0
<1
1,2-Dichloropropane (ug/L)
0.56
<1,000
<100
<250
<100
<50
<1.0
<1.0
<200
<100
<50
<100
<1.0
<1.0
<10.0
<1
Methyl tert-butyl ether (MTBE) (ug/1)
200
NA
NA
NA
NA
<50
NA
NA
NA
NA
NA
NA
19.3
NA
NA
<1
Trichloroethene (ug/L)
2.8
<1,000
<100
<250
<100
<50
6.5
3.1
<200
<100
<50
<100
156
66.7
<10.0
2.0
Tetrachloroethene (ug/L)
0.7
33,000
8,000
18,000
12,600
3,880
3,420
2,240
11,000
6,500
4,100
5,080
56
358
72
46.2
1,1,2,2-Tetrachloroethane (ug/L)
none
<1,000
<100
<250
<100
<50
<1.0
<1.0
<200
<100
<520
<100
<1.0
<1.0
<10.0
Toluene(ug/L)
1,000
NA
NA
NA
<100
<50
<1.0
NA
NA
NA
NA
<100
<1.0
<1.0
NA
1,1,1-Trichloroethane (ug/L)
200
<1,000
<100
<250
<100
<50
<1.0
<1.0
<200
<100
<50
<100
<1.0
<1.0
<10.0
<1
1,1,2-Trichloroethane (ug/L)
none
<1,000
<100
<250
<100
<50
<1.0
<1.0
<200
<100
<50
<100
<1.0
<1.0
<10.0
<1
Xylenes, Total (ug/L)
NA
NA
NA
<200
<100
<2.0
NA
NA
NA
NA
1 <200
1 <2.0
<2.0
NA
Total VOCs Detected (ug/L)
33,000
1 8,000
1 18,000
1 12,600
1 3,880
1 3,427
2,243
11,540
6,500
4,100
1 5,080
1 1,316
1 520
72
48
Sample Location:
MW-3
MW-4
Sample Date:
5/29/92 A
6/25/93 A
7/22/94 A
7/10/96 A
07/10/96 B
12/02/98 B
1/21/99 B
10/28/99 B
3/22/00 B
9/8/00 B
10/18/00 B
5/29/92 A
07/10/96 A
7/10/96 B
12/2/98 B
10/28/99 B
3/22/00 B
917/00 B
10/19/00 B
Analyte
NCAC 2L
Benzene (ug/L)
1.0
NA
NA
NA
NA
NA
<100
NA
<5,000
<1.0
<5,000
<1,000
NA
NA
NA
<100
<500
<1.0
<1,000
<1,000
Ethylbenzene (ug/L)
29
NA
NA
NA
NA
NA
<100
NA
<5,000
<1.0
<5,000
<1,000
NA
NA
NA
<100
<500
<1.0
<1,000
<1,000
Methylene Chloride (ug/L)
5.0
<10,000
<5,000
<1000
<25,000
<1000
<500
<2,500
<25,000
<5.0
<25,000
<5,000
<2,000
<12,000
<2,500
<500
<2,500
<5.0
<5,000
<5,000
Chloroform (ug/L)
0.19
<10,000
<5,000
<1000
<5,000
<1000
<100
<500
<5,000
9.7
<5,000
<1,000
<2,000
<2,500
<2,500
<100
<500
<1.0
<1,000
<1,000
Chloromethane (ug/L)
none
<10,000
<5,000
<1000
<5,000
<1000
<100
<500
<5,000
<1.0
<5,000
<1,000
<2,000
<2,500
<2,500
<100
<500
<1.0
<1,000
<1,000
Carbon Tetrachloride (ug/L)
0.3
<10,000
<5,000
<1000
<5,000
<1000
<100
<500
<5,000
3.7
<5,000
<1,000
<2,000
<2,500
<2,500
<100
<500
<1.0
<1,000
<1,000
1,1-Dichloroethane (ug/L)
700
<10,000
<5,000
<1000
<5,000
<1000
<100
<500
<5,000
<1.0
<5,000
<1,000
<2,000
<2,500
<2,500
<100
<500
<1.0
<1,000
<1,000
1,2-Dichloroethane (ug/L)
0.38
<10,000
<5,000
<1000
<5,000
<1000
<100
<500
<5,000
<1.0
<5,000
<1,000
<2,000
<2,500
<2,500
<100
<500
<1.0
<1,000
<1,000
1,1-Dichloroethene (ug/L)
7.0
<10,000
<5,000
2,100
<5,000
<1000
<100
<500
<5,000
3.4
<5,000
<1,000
<2,000
<2,500
<2,500
<100
<500
<1.0
<1,000
<1,000
cis-1,2-Dichloroethene (ug/L)
70
<10,000
<5,000
<1000
<5,000
NA
310
<500
<5,000
210
<5,000
<1,000
<2,000
<2,500
NA
<100
<500
2.7
<1,000
<1,000
trans-1,2-Dichloroethene (ug/L)
70
<10,000
<5,000
<1000
<5,000
NA
<100
<500
<5,000
3.2
<5,000
<1,000
<2,000
<2,500
NA
<100
<500
<1.0
<1,000
<1,000
1,2-Dichloropropane (ug/L)
0.56
<10,000
<5,000
<1000
<5,000
<1000
<100
<500
<5,000
<1.0
<5,000
<1,000
<2,000
<2,500
<2,500
<100
<500
<1.0
<1,000
<1,000
Methyl tert-butyl ether (MTBE) (ug/1)
200
NA
NA
NA
NA
NA
NA
NA
<5,000
NA
<5,000
<1,000
NA
NA
NA
NA
<500
NA
NA
<1,000
Trichloroethene (ug/L)
2.8
<10,000
<5,000
<1000
<5,000
<1000
210
<500
<5,000
<1000
<5,000
<1,000
<2,000
<2,500
<2,500
<100
<500
7.6
<1,000
<1,000
Tetrachloroethene (ug/L)
0.7
270,000
250,000
110,000
200,000
200,000
152,000
94,000
60,500
156,000
164,000
148,000
55,000
39,000
38,000
17,000
22,200
13,400
41,200
54,800
1,1,2,2-Tetrachloroethane (ug/L)
none
<10,000
<5,000
<1000
<5,000
<1000
<100
<500
<5,000
5
<5,000
<2,000
<2,500
<2,500
<100
<500
<1.0
<1,000
Toluene (ug/L)
1,000
NA
NA
NA
NA
NA
<100
NA
<5,000
<1.0
<5,000
NA
NA
NA
<100
<500
<1.0
<1,000
1,1,1-Trichloroethane(ug/L)
200
<10,000
<5,000
<1000
<5,000
<1000
<100
<500
<5,000
2
<5,000
<1,000
<2,000
<2,500
<2,500
<100
<500
<1.0
<1,000
<1,000
1,1,2-Trichloroethane (ug/L)
none
<10,000
<5,000
<1000
<5,000
<1000
<100
<500
<5,000
52.5
<5,000
<1,000
<2,000
<2,500
<2,500
<100
<500
<1.0
<1,000
<1,000
Xylenes, Total (ug/L)
NA
NA
NA
NA
NA
<200
NA
<10,000
<2.0
<10,000
NA
NA
NA
<200
<1,000
<2.0
<2,000
Total VOCs Detected (ug/L)
270,000
250,000
112,100
200,000
200,000
152,520
94,000
60,500
156,290
154,000
148,000
55,000
39,000
38,000
17,000
22,200
13,410
41,200
54,800
Notes: Compounds detected above the North Carolina 2L Standard are shown in bold.
A - indicates samples collected by Mortensen Engineering, Inc.
B - indicates samples collected by IT Corporation of North Carolina, Inc. (formerly Fluor Daniel GTI, Inc.)
NA denotes compound not analyzed
NS denotes well not sampled
Shallow gw summary-OCT2000 Page 1 of 5 Revised 12/6/00

TABLE 7
Historical Groundwater Analytical Data Summary - Shallow Wells
W. P. Ballard and Downgradient Properties
Greensboro, North Carolina
Sample Location:
MW-5
MW-6
MW-7
Sample Date:
5/29/92 A
7122/94 A
7/22/96 A
12/02/98 B
10/28/99 B
3/22/00 B
9/7/00 B
10/19/00 B
5/29/92 A
7/11/96A
12/02/98 B
10/28/99 B
3/22/00 B 9/7/00 B
10/19/00 B
1/9/93 A
7/22/94 A
7/12/96 A
12/02/98 B
10/27/99 B
3/22/00 B
9/8/00 B
Analyte
NCAC 2L
Benzene (ug/L)
1.0
NA
NA
NA
<1.0
<100
<1.0
NA
<100
NA
NA
<1.0
<10.0
<10.0 NA
<50
NA
NA
NA
<1.0
<1.0
<1.0
NA
Ethylbenzene (ug/L)
29
NA
NA
NA
<1.0
<100
<1.0
NA
<100
NA
NA
<1.0
<10.0
<10.0 NA
<50
NA
NA
NA
<1.0
<1.0
<1.0
NA
Methylene Chloride (ug/L)
5.0
<200
<100
<500
<5.0
<500
<5.0
<500
<500
<10
<5.0
<5.0
<50.0
<50.0 <250.0
<250
6.8
<1.0
<5.0
<5.0
<5.0
<5.0
<25.0
Chloroform (ug/L)
0.19
<200
<100
<100
<1.0
<100
<1.0
<100
<100
<10
<1.0
<1.0
<10.0
<10.0 <50.0
<50
<1.0
1.4
<1.0
<1.0
<1.0
<1.0
<5.0
Chloromethane (ug/L)
none
<200
<100
<100
<1.0
<100
<1.0
<100
<100
<10
<1.0
<1.0
<10.0
<10.0 <50.0
<50
<1.0
<1.0
<1.0
<1.0
<1.0
<1.0
<5.0
Carbon Tetrachloride (ug/L)
0.3
<200
<100
<100
<1.0
<100
<1.0
<100
<100
<10
<1.0
<1.0
<10.0
<10.0 <50.0
<50
<1.0
<1.0
<1.0
<1.0
<1.0
<1.0
<5.0
1,1-Dichloroethane (ug/L)
700
<200
<100
<100
<1.0
<100
<1.0
<100
<100
<10
<1.0
1
<10.0
<10.0 <50.0
<50
12
38
16
2.3
1.2
<1.0
<5.0
1,2-Dichloroethane (ug/L)
0.38
<200
<100
<100
<1.0
<100
<1.0
<100
<100
<10
<1.0
<1.0
<10.0
<10.0 <50.0
<50
<1.0
<1.0
<1.0
<1.0
<1.0
<1.0
<5.0
1,1-Dichloroethene (ug/L)
7.0
<200
<100
<100
6.9
<100
6
<100
<100
54
89
203
199
296 445
470
<1.0
5.9
1.8
<1.0
<1.0
<1.0
166.0
cis- 1,2-Dichloroethene (ug/L)
70
<200
<100
<100
1.5
<100
<1.0
<100
<100
<10
NA
1.9
<10.0
<10.0 <50.0
<50
<1.0
<1.0
<1.0
<1.0
<1.0
<1.0
<5.0
trans-1,2-Dichloroethene (ug/L)
70
<200
<100
<100
<1.0
<100
<1.0
<100
<100
<10
NA
1.6
<10.0
<10.0 <50.0
<50
<1.0
<1.0
<1.0
<1.0
<1.0
<1.0
<5.0
1,2-Dichloropropane (ug/L)
0.56
<200
<100
<100
<1.0
<100
<1.0
<100
<100
<10
<1.0
<1.0
<10.0
<10.0 <50.0
<50
<1.0
<1.0
<1.0
<1.0
<1.0
<1.0
<5.0
Methyl tert-butyl ether (MTBE) (ug/1)
200
NA
NA
NA
NA
<100
NA
NA
<100
NA
NA
NA
<10.0
NA NA
<50
NA
NA
NA
NA
<1.0
NA
NA
Trichloroethene (ug/L)
2.8
<200
<100
<100
1.2
<100
4.2
<100
<100
<10
<1.0
<1.0
<10.0
<10.0 <50.0
<50
<1.0
<1.0
<1.0
<1.0
<1.0
<1.0
<5.0
Tetrachloroethene (ug/L)
0.7
9,500
5,100
6,300
3,200
7,590
8,120
5,880
5,060
11
28
66
37
101 125
255
1.4
2.4
1.3
<1.0
<1.0
<1.0
17.5
1,1,2,2-Tetrachloroethane (ug/L)
none
<200
<100
<100
<1.0
<100
<1.0
<100
<10
<1.0
<1.0
<10.0
<10.0 <50.0
<1.0
<1.0
<1.0
<1.0
<1.0
<1.0
<5.0
Toluene (ug/L)
1,000
NA
NA
NA
<1.0
<100
<1.0
NA
NA
NA
<1.0
<10.0
<10.0 NA
NA
NA
NA
<1.0
<1.0
<1.0
NA
1,1,1-Trichloroethane (ug/L)
200
<200
<100
<100
<1.0
<100
<1.0
<100
<100
18
16
19
18
<10.0 <50.0
<50
4.4
6
3.4
<1.0
<1.0
<1.0
<5.0
1,1,2-Trichloroethane (ug/L)
none
<200
<100
<100
<1.0
<100
3.3
<100
<100
<10
2.8
2.8
<10.0
<10.0 <50.0
<50
<1.0
<1.0
<1.0
<1.0
<1.0
<1.0
<5.0
Xylenes, Total (ug/L)
NA
NA
NA
<2.0
<200
<2.0
NA
NA
NA
<2.0
<20.0
<20.0 NA
NA
NA
NA
1 <2.0
1 <2.0
1 <2.0
NA
Total VOCs Detected (ug/L)
9,500
5,100
6,300
3,210
7,590
8,134
5,880
5,060
83
136
295
254
397
570
725
25
54
23
2
1
0
184
Sample Location:
MW-8
MW-9
1 MW-10
Sample Date:
1/9/93 A
7/21/94 A
7/11/96 A
12/02/98 B
10/28/99 B
3/22/00 B
9/7100 B
1/9/93 A
7/21/94 A
7/9/96 A
7/9/96 B
12/02/98 B
10/27/99 B
3122/00 B
9/12/00 B
1/9/93 A
6/25/93 A
7/21/94 A
07/10/96 A
7/10/96 B
12/02/98 B
10/27/99 B
3/22/00 8
9/14/00 B
Analyte
NCAC 2L
Benzene (ug/L)
1.0
NA
NA
NA
<1.0
<1.0
<1.0
NA
NA
NA
NA
NA
<1.0
<1.0
<1.0
NA
NA
NA
NA
NA
NA
<1.0
<1.0
<1.0
NA
Ethylbenzene (ug/L)
29
NA
NA
NA
<1.0
<1.0
<1.0
NA
NA
NA
NA
NA
<1.0
<1.0
<1.0
NA
NA
NA
NA
NA
NA
<1.0
<1.0
<1.0
NA
Methylene Chloride (ug/L)
5.0
7.8
<1.0
<5.0
<5.0
<5.0
<5.0
<5.0
9.5
<1.0
<5.0
<1.0
<5.0
<5.0
<5.0
<5.0
<250
<100
<100
<2,500
<250
<5.0
<5.0
<5.0
<2500
Chloroform (ug/L)
0.19
<1.0
<1.0
<1.0
<1.0
<1.0
<1.0
<1.0
<1.0
<1.0
<1.0
<1.0
<1.0
<1.0
<1.0
<1.0
<250
<100
<100
<500
<250
<1.0
2.4
<1.0
<500
Chloromethane (ug/L)
none
<1.0
<1.0
<1.0
<1.0
<1.0
<1.0
<1.0
<1.0
<1.0
<1.0
<1.0
<1.0
<1.0
<1.0
<1.0
<250
<100
<100
<500
<250
<1.0
<1.0
<1.0
<500
Carbon Tetrachloride (ug/L)
0.3
<1.0
<1.0
<1.0
<1.0
<1.0
<1.0
<1.0
<1.0
<1.0
<1.0
<1.0
<1.0
<1.0
<1.0
<1.0
<250
<100
<100
<500
<250
<1.0
<1.0
<1.0
<500
1,1-Dichloroethane (ug/L)
700
<1.0
<1.0
<1.0
<1.0
<1.0
<1.0
<1.0
<1.0
<1.0
<1.0
<1.0
<1.0
<1.0
<1.0
<1.0
<250
<100
<100
<500
<250
<1.0
<1.0
<1.0
<500
1,2-Dichloroethane (ug/L)
0.38
<1.0
<1.0
<1.0
<1.0
<1.0
<1.0
<1.0
<1.0
<1.0
<1.0
<1.0
<1.0
<1.0
<1.0
<1.0
<250
<100
<100
<500
<250
<1.0
1.7
1.9
<500
1, 1 -Dichloroethene (ug/L)
7.0
<1.0
<1.0
<1.0
<1.0
<1.0
<1.0
<1.0
<1.0
<1.0
<1.0
<1.0
<1.0
<1.0
<1.0
<1.0
<250
<100
<100
<500
<250
<1.0
<1.0
<1.0
<500
cis-1,2-Dichloroethene (ug/L)
70
<1.0
<1.0
<1.0
<1.0
<1.0
<1.0
<1.0
<1.0
<1.0
<1.0
NA
<1.0
<1.0
<1.0
<1.0
<250
<100
<100
<500
NA
5.8
3.5
7.2
<500
trans-1,2-Dichloroethene (ug/L)
70
<1.0
<1.0
<1.0
<1.0
<1.0
<1.0
<1.0
<1.0
<1.0
<1.0
NA
<1.0
<1.0
<1.0
<1.0
<250
<100
<100
<500
NA
<1.0
<1.0
<1.0
<500
1,2-Dichloropropane (ug/L)
0.56
<1.0
<1.0
<1.0
<1.0
<1.0
<1.0
<1.0
<1.0
<1.0
<1.0
<1.0
<1.0
<1.0
<1.0
<1.0
<250
<100
<100
<500
<250
<1.0
<1.0
<1.0
<500
Methyl tert-butyl ether (MTBE) (ug/1)
200
NA
NA
NA
NA
<1.0
NA
NA
NA
NA
NA
NA
NA
<1.0
NA
NA
NA
NA
NA
NA
NA
NA
<1.0
NA
NA
Trichloroethene (ug/L)
2.8
<1.0
<1.0
<1.0
<1.0
<1.0
<1.0
<1.0
<1.0
<1.0
<1.0
<1.0
<1.0
<1.0
<1.0
<1.0
<250
<100
<100
<500
<250
21
13
13.8
<500
Tetrachloroethene (ug/L)
0.7
4.5
3.9
2.6
4.2
<1.0
<1.0
<1.0
14
7.7
4.3
3.8
9.1
<1.0
<1.0
<1.0
13,000
7,200
12,000
12,000
11,000
12,000
8,090
8,800
6,900
1,1,2,2-Tetrachloroethane (ug/L)
none
<1.0
<1.0
<1.0
<1.0
<1.0
<1.0
<1.0
<1.0
<1.0
<1.0
<1.0
<1.0
<1.0
<1.0
<1.0
<250
<100
<100
<500
<250
<1.0
<1.0
<1.0
<500
Toluene (ug/L)
1,000
NA
NA
NA
<1.0
<1.0
<1.0
NA
NA
<1.0
<1.0
NA
<1.0
<1.0
<1.0
<1.0
NA
NA
NA
NA
NA
<1.0
<1.0
<1.0
NA
1,1,1-Trichloroethane (ug/L)
200
<1.0
<1.0
<1.0
<1.0
<1.0
<1.0
<1.0
<1.0
<1.0
<1.0
<1.0
<1.0
<1.0
<1.0
<1.0
<250
<100
<100
<500
<250
<1.0
<1.0
<1.0
<500
1,1,2-Trichloroethane (ug/L)
none
<1.0
<1.0
<1.0
<1.0
<1.0
<1.0
<1.0
<1.0
<1.0
<1.0
<1.0
<1.0
<1.0
<1.0
<1.0
<250
<100
<100
<500
<250
11
8.3
12
<500
Xylenes, Total (ug/L)
NA
NA
NA
<2.0
<2.0
<2.0
NA
NA
NA
NA
NA
<2.0
<2.0
<2.0
NA
NA
NA
NA
NA
NA
I <2.0
<2.0
<2.0
NA
Total VOCs Detected (ug/L)
12
4
3
4
0
0
0
24
8
4
4
9
0
0
0
13,000
7,200
1 12,000
12,000
11,000
1 12,038
8,119
8,835
6,900
Notes: Compounds detected above the North Carolina 2L Standard are shown in bold.
A - indicates samples collected by Mortensen Engineering, Inc.
B - indicates samples collected by IT Corporation of North Carolina, Inc. (formerly Fluor Daniel GTI, Inc.)
NA denotes compound not analyzed
NS denotes well not sampled
Monitoring wells MW-16, MW-19, MW-24, MW-25 and MW-26 were destroyed during site construction activities.
Shallow gw summary-OCT2000 Page 2 of 5 Revised 12/6/00

TABLE 7
Historical Groundwater Analytical Data Summary - Shallow Wells
W. P. Ballard and Downgradient Properties
Greensboro, North Carolina
Sample Location:
MW-11
MW-12
I MW-13
Sample Date:
6/25/93 A
7/9/96 A
7/9/96 B
12/02/98 B
10/26/99 B
3/22100 B
9/14/00 B
6/25/93 A
7/9/96 A
7/9/96 B
12/02/98 B
10/26/99 B
3122/00 B
9112/00 B
6/25/93 A
7/9/96 A
7/9/96 B
1/21/99 B
10/25/99 B
3/22/00 B
9/13/00 B
Analyte
NCAC 2L
Benzene (ug/L)
1.0
NA
NA
NA
<1.0
<1.0
<1.0
NA
NA
NA
NA
<1.0
<10.0
<1.0
NA
NA
NA
NA
NA
<1.0
<1.0
NA
Ethylbenzene (ug/L)
29
NA
NA
NA
<1.0
<1.0
<1.0
NA
NA
NA
NA
<1.0
<10.0
<1.0
NA
NA
NA
NA
NA
<1.0
<1.0
NA
Methylene Chloride (ug/L)
5.0
<1.0
<5.0
2.4
<5.0
<5.0
<5.0
<5.0
<1.0
<25
44
<5.0
<50.0
<5.0
<50.0
<1.0
<5.0
1.5
<5.0
<5.0
<5.0
<5.0
Chloroform (ug/L)
0.19
<1.0
<1.0
<1.0
<1.0
<1.0
<1.0
<1.0
<1.0
<5.0
<1.0
<1.0
<10.0
<1.0
<10.0
<1.0
<1.0
<1.0
<1.0
<1.0
<1.0
<1.0
Chloromethane (ug/L)
none
<1.0
<1.0
<1.0
<1.0
<1.0
<1.0
<1.0
<1.0
<5.0
<1.0
<1.0
<10.0
<1.0
<10.0
<1.0
<1.0
<1.0
<1.0
<1.0
<1.0
<1.0
Carbon Tetrachloride (ug/L)
0.3
<1.0
<1.0
<1.0
<1.0
<1.0
<1.0
<1.0
<1.0
<5.0
<1.0
<1.0
<10.0
<1.0
<10.0
<1.0
<1.0
<1.0
<1.0
<1.0
<1.0
<1.0
1,1-Dichloroethane (ug/L)
700
<1.0
<1.0
<1.0
<1.0
<1.0
<1.0
<1.0
<1.0
<5.0
<1.0
<1.0
<10.0
<1.0
<10.0
<1.0
<1.0
<1.0
<1.0
<1.0
<1.0
<1.0
1,2-Dichloroethane (ug/L)
0.38
<1.0
<1.0
<1.0
<1.0
<1.0
<1.0
<1.0
<1.0
<5.0
<1.0
<1.0
<10.0
<1.0
<10.0
<1.0
<1.0
<1.0
<1.0
<1.0
<1.0
<1.0
1,1-Dichloroethene(ug/L)
7.0
<1.0
<1.0
<1.0
<1.0
<1.0
<1.0
<1.0
<1.0
<5.0
<1.0
<1.0
<10.0
<1.0
<10.0
<1.0
<1.0
<1.0
<1.0
<1.0
<1.0
<1.0
cis-1,2-Dichloroethene (ug/L)
70
<1.0
<1.0
NA
<1.0
<1.0
<1.0
<1.0
<1.0
<5.0
NA
<1.0
<10.0
<1.0
<10.0
<1.0
<1.0
NA
<1.0
<1.0
<1.0
<1.0
trans-1,2-Dichloroethene (ug/L)
70
<1.0
<1.0
NA
<1.0
<1.0
<1.0
<1.0
<1.0
<5.0
NA
<1.0
<10.0
<1.0
<10.0
<1.0
<1.0
NA
<1.0
<1.0
<1.0
<1.0
1,2-Dichloropropane (ug/L)
0.56
<1.0
<1.0
<1.0
<1.0
<1.0
<1.0
<1.0
<1.0
<5.0
54
209
240
117
277
<1.0
<1.0
<1.0
<1.0
<1.0
<1.0
<1.0
Methyl tert-butyl ether (MTBE) (ug/1)
200
NA
NA
NA
NA
NA
NA
NA
NA
NA
NA
NA
NA
NA
NA
NA
NA
NA
NA
NA
NA
NA
Trichloroethene (ug/L)
2.8
<1.0
<1.0
<1.0
<1.0
<1.0
<1.0
<1.0
<1.0
<5.0
1.2
2.4
<10.0
2
<10.0
<1.0
<1.0
<1.0
<1.0
<1.0
<1.0
6.2
Tetrachloroethene (ug/L)
0.7
<1.0
<1.0
<1.0
<1.0
<1.0
<1.0
<1.0
<1.0
110
1
2.1
<10.0
<1.0
<10.0
<1.0
1
<1.0
<1.0
<1 D
<1.0
35.8
1,1,2,2-Tetrachloroethane (ug/L)
none
<1.0
<1.0
<1.0
<1.0
<1.0
<1.0
<1.0
<1.0
<5.0
<1.0
<1.0
<10.0
<1.0
<10.0
<1.0
<1.0
<1.0
<1.0
<1.0
<1.0
<1.0
Toluene (ug/L)
1,000
NA
NA
NA
<1.0
<1.0
<1.0
NA
NA
NA
NA
<1.0
<10.0
<1.0
NA
NA
NA
NA
NA
<1.0
<1.0
NA
1,1,1-Trichloroethane (ug/L)
200
<1.0
<1.0
<1
<1.0
<1.0
<1.0
<1.0
<1.0
<5.0
<1.0
<1.0
<10.0
<1.0
<10.0
<1.0
<1.0
<1.0
<1.0
<1.0
<1.0
<1.0
1,1,2-Trichloroethane (ug/L)
none
<1.0
<1.0
<1
<1.0
<1.0
<1.0
<1.0
<1.0
<5.0
<1.0
<1.0
<10.0
<1.0
<10.0
<1.0
<1.0
<1.0
<1.0
<1.0
<1.0
<1.0
Xylenes, Total (ug/L)
NA
NA
NA
<2.0
<2.0
<2.0
NA
NA
NA
NA
<2.0
<20.0
<2.0
NA
NA
NA
NA
NA
<2.0
<2.0
NA
Total VOCs Detected (ug/L)"
0
0
2
0
0
0
0
0
110
100
214
240
119
277
0
1
2
0
0
0
42
Sample Location:
MW-14
MW-15
MW-16
6/25/93 A
7/9/96 A
7/9/96 B
1/21/99 B
10/26/99 B
3/22/00 B
9/13/00 B
7/10/96 A
7/10/96 B
12/02/98 B
10/27/99 B
3/22/00 B
9/13/00 B
7/10/96 A
7/10/96 B
Sample Date:
Analyte
NCAC 2L
Benzene (ug/L)
1.0
NA
NA
NA
<1.0
NS
<1.0
NA
NA
NA
<1.0
<1.0
<1.0
NA
NA
NA
Ethylbenzene (ug/L)
29
NA
NA
NA
<1.0
NS
<1.0
NA
NA
NA
<1.0
<1.0
<1.0
NA
NA
NA
Methylene Chloride (ug/L)
5.0
<1.0
<5.0
<1.0
<5.0
NS
<5.0
<5.0
<25
<1.0
<5.0
<5.0
<5.0
<50.0
<5.0
1.4
Chloroform (ug/L)
0.19
<1.0
<1.0
<1.0
<1.0
NS
<1.0
<1.0
28
27
24
16.4
18.7
22
<1.0
<1.0
Chloromethane (ug/L)
none
<1.0
<1.0
<1.0
<1.0
NS
<1.0
<1.0
<5.0
<1.0
<1.0
<1.0
<1.0
<10.0
<1.0
<1.0
Carbon Tetrachloride (ug/L)
0.3
<1.0
<1.0
<1.0
<1.0
NS
<1.0
<1.0
29
24
13
7.7
7.6
<10.0
<1.0
<1.0
1,1-Dichloroethane (ug/L)
700
<1.0
<1.0
<1.0
<1.0
NS
<1.0
<1.0
<5.0
<1.0
<1.0
<1.0
<1.0
<10.0
<1.0
<1.0
1,2-Dichloroethane (ug/L)
0.38
<1.0
<1.0
<1.0
<1.0
NS
<1.0
<1.0
<5.0
<1.0
<1.0
<1.0
<1.0
<10.0
<1.0
<1.0
1,1-Dichloroethene (ug/L)
7.0
<1.0
<1.0
<1.0
<1.0
NS
<1.0
<1.0
<5.0
<1.0
<1.0
<1.0
<1.0
<10.0
<1.0
<1.0
cis-1,2-Dichloroethene (ug/L)
70
<1.0
<1.0
NA
<1.0
NS
<1.0
<1.0
7.7
NA
16
18.9
30.5
19
<1.0
NA
trans-1,2-Dichloroethene (ug/L)
70
<1.0
<1.0
NA
<1.0
NS
<1.0
<1.0
<5.0
NA
<1.0
<1.0
<1.0
<10.0
<1.0
NA
1,2-Dichloropropane (ug/L)
0.56
<1.0
<1.0
<1.0
<1.0
NS
<1.0
<1.0
<5.0
<1.0
<1.0
<1.0
<1.0
<10.0
<1.0
<1.0
Methyl tert-butyl ether (MTBE) (ug/1)
200
NA
NA
NA
NA
NS
NA
NA
NA
NA
NA
NA
NA
NA
NA
NA
Trichloroethene (ug/L)
2.8
<1.0
<1.0
<1.0
<1.0
NS
1.8
<1.0
130
95
221
280
468
538
<1.0
<1.0
Tetrachloroethene (ug/L)
0.7
<1.0
<1.0
<1.0
<1.0
NS
30.4
1.8
42
33
39
20.8
87
40
<1.0
<1.0
1,1,2,2-Tetrachloroethane (ug/L)
none
<1.0
<1.0
<1.0
<1.0
NS
<1.0
<1.0
<5.0
<1.0
<1.0
<1.0
<1.0
<1.0
<1.0
<1.0
Toluene (ug/L)
1,000
NA
NA
NA
NA
NS
<1.0
NA
NA
NA
<1.0
<1.0
<1.0
NA
NA
NA
1,1,1-Trichloroethane (ug/L)
200
<1.0
<1.0
<1.0
<1.0
NS
<1.0
<1.0
<5.0
<1.0
<1.0
<1.0
<1.0
<1.0
<1.0
<1.0
1,1,2-Trichloroethane (ug/L)
none
<1.0
<1.0
<1.0
<1.0
NS
<1.0
<1.0
<5.0
<1.0
<1.0
<1.0
<1.0
<1.0
<1.0
<1.0
Xylenes, Total (ug/L)
NA
NA
NA
NA
NS
<2.0
NA
NA
NA
<2.0
<2.0
<2.0
NA
NA
NA
Total VOCs Detected (ug/L)
shy
0
0
0
0
0
32
2
237
179
313
344
612
619
0
1
Notes: Compounds detected above the North Carolina 2L S
A - indicates samples collected by Mortensen Engineering, Inc.
B - indicates samples collected by IT Corporation of North Carolina, Inc. (formerly Fluor Daniel GTI, Inc.)
NA denotes compound not analyzed
NS denotes well not sampled
Monitoring wells MW-16, MW-19, MW-24, MW-25 and MW-26 were destroyed during site construction activities.
Shallow gw summary-OCT2000 Page 3 of 5 Revised 12/6/00

� I
TABLE 7
Historical Groundwater Analytical Data Summary - Shallow Wells
W. P. Ballard and Downgradient Properties
Greensboro, North Carolina
Sample Location:
MW-17
MW-18
MW-19
7/10/96 A
7/10/96 B
10/07/96 B
12/02/98 B
10/26/99 B
3/22/00 B
9/13/00 B
10/7/96A
10/07/96 B
12/02/98 B
10/26/99 B
3/22/00 B
9/13/00 B
10/7/96 A
10/7/96 6
Sample Date:
Analyte
NCAC 2L
Benzene (ug/L)
1.0
NA
NA
NA
<1.0
<1.0
<1.0
NA
NA
NA
<1.0
<1.0
<1.0
NA
NA
NA
Ethylbenzene (ug/L)
29
NA
NA
NA
<1.0
<1.0
<1.0
NA
NA
NA
<1.0
<1.0
<1.0
NA
NA
NA
Methylene Chloride (ug/L)
5.0
<250
<50
<10
<5.0
<5.0
<5.0
<500
<250
<100
<5.0
<5.0
<5.0
<500
<2.5
<1.0
Chloroform (ug/L)
0.19
<50
<50
31
<1.0
1.6
1
<100
<50
<19
<1.0
<1.0
<1.0
<100
<0.50
<0.19
Chloromethane (ug/L)
none
<50
<50
<10
<1.0
<1.0
<1.0
<100
<50
<200
<1.0
<1.0
<1.0
<100
<0.50
<2.0
Carbon Tetrachloride (ug/L)
0.3
<50
<50
140
6.4
12.6
16.7
<100
<50
<30
<1.0
<1.0
<1.0
<100
<0.50
<0.30
1, 1 -Dichloroethane (ug/L)
700
<50
<50
<10
<1.0
<1.0
<1.0
<100
<50
<100
<1.0
<1.0
<1.0
<100
<0.50
<1.0
1,2-Dichloroethane (ug/L)
0.38
<50
<50
<10
<1.0
<1.0
<1.0
<100
<50
<100
<1.0
<1.0
<1.0
<100
<0.50
<1.0
1, 1 -Dichloroethene (ug/L)
7.0
<50
<50
<10
<1.0
<1.0
<1.0
<100
<50
<100
<1.0
<1.0
<1.0
<100
<0.50
<1.0
cis- 1,2-Dichloroethene (ug/L)
70
NA
NA
NA
59
95
130
<100
NA
NA
18
15.6
18.3
<100
NA
NA
trans-1,2-Dichloroethene (ug/L)
70
NA
NA
NA
<1.0
<1.0
11.2
<100
NA
NA
<1.0
<1.0
<1.0
<100
NA
NA
1,2-Dichloropropane (ug/L)
0.56
<50
<50
<10
<1.0
6.0
<1.0
<100
<50
<20
<1.0
12.0
<1.0
<100
<0.50
<0.20
Methyl tert-butyl ether (MTBE) (ug/1)
200
NA
NA
NA
NA
NA
NA
NA
NA
NA
NA
NA
NA
NA
NA
NA
Trichloroethene (ug/L)
2.8
780
620
120
490
960
1,060
1,150
440
380
680
730
740
830
<0.50
<1.0
Tetrachloroethene (ug/L)
0.7
5,200
5,200
28
2,600
4,880
5,680
4,090
2,100
1,600
2,100
2,100
2,450
1,940
<0.50
<0.70
1,1,2,2-Tetrachloroethane (ug/L)
none
<50
<50
<10
<1.0
<1.0
<1.0
<1.0
<50
<100
<1.0
<1.0
<1.0
<100
<0.50
<1.0
Toluene (ug/L)
1,000
NA
NA
NA
<1.0
<1.0
<1.0
NA
NA
NA
<1.0
<1.0
<1.0
NA
NA
NA
1,1,1-Trichloroethane (ug/L)
200
<50
<50
<10
<1.0
<1.0
<1.0
<100
<50
<100
<1.0
<1.0
<1.0
<100
<0.50
<1.0
1,1,2-Trichloroethane (ug/L)
none
<50
<50
<10
<1.0
<1.0
<1.0
<100
<50
<100
<1.0
<1.0
<1.0
<100
<0.50
<1.0
Xylenes, Total (ug/L)
NA
NA
NA
<2.0
1 <2.0
12.0
NA
NA
NA
<2.0
<2.0
<2.0
NA
NA
NA
Total VOCs Detected (ug/L)
5,980
5,820
319
3,155
5,955
6,899
1 5,240
2,540
1,980
1 2,798
2,858
3,208
2,770
0
0
Sample Location:
10/7/96 A
Sample Date:
Analyte
NCAC 2L
Benzene (ug/L)
1.0
NA
Ethylbenzene (ug/L)
29
NA
Methylene Chloride (ug/L)
5.0
<2.5
Chloroform (ug/L)
0.19
<0.50
Chloromethane (ug/L)
none
<0.50
Carbon Tetrachloride (ug/L)
0.3
<0.50
1,1-Dichloroethane (ug/L)
700
<0.50
1,2-Dichloroethane (ug/L)
0.38
<0.50
1,1-Dichloroethene (ug/L)
7.0
<0.50
cis- 1,2-Dichloroethene (ug/L)
70
NA
trans- l,2-Dichloroethene (ug/L)
70
NA
1,2-Dichloropropane (ug/L)
0.56
<0.50
Methyl tert-butyl ether (MTBE) (ug/1)
200
NA
Trichloroethene (ug/L)
2.8
<0.50
Tetrachloroethene (ug/L)
0.7
<0.50
1,1,2,2-Tetrachloroethane (ug/L)
none
<0.50
Toluene (ug/L)
1,000
NA
1,1,1-Trichloroethane (ug/L)
200
<0.50
1,1,2-Trichloroethane (ug/L)
none
<0.50
Xylenes, Total (ug/L)
NA
Total VOCs Detected (uq/L)
s::.:.:
0
MW-20
MW-21
MW-22
10/7/96 B
01/21/99 B
10/26/99 B
3/22/00 B
9/13/00 B
10/7/96 A
10/7/96 B
12/02/98 B
10/26/99 B
3122/00 B
9/13100 B
10/7/96 A
1017/96 B
12/02/98 B
10/25/99 B
3/22/00 B
9/13/00 B
NA
NA
<1.0
<1.0
NA
NA
NA
<1.0
<1.0
<1.0
NA
NA
NA
<1.0
<1.0
<1.0
NA
NA
NA
<1.0
<1.0
NA
NA
NA
<1.0
<1.0
<1.0
NA
NA
NA
<1.0
<1.0
<1.0
NA
<1.0
<5.0
<5.0
<5.0
<5.0
<2.5
<1.0
<5.0
<5.0
<5.0
<50.0
<120
<10
<5.0
<5.0
<5.0
<250
<0.19
<1.0
<1.0
<1.0
<1.0
<0.50
<0.19
<1.0
<1.0
<1.0
<10.0
<25
<1.9
<1.0
<1.0
<1.0
<50
<2.0
<1.0
<1.0
<1.0
<1.0
<0.50
<2.0
<1.0
<1.0
<1.0
<10.0
<25
<20
<1.0
<1.0
<1.0
<50
<0.30
<1.0
<1.0
<1.0
<1.0
<0.50
<0.30
<1.0
<1.0
<1.0
<10.0
<25
<0.30
<1.0
2.5
3
<50
<1.0
<1.0
<1.0
<1.0
<1.0
<0.50
<1.0
<1.0
<1.0
<1.0
<10.0
<25
<10
<1.0
<1.0
<1.0
<50
<1.0
<1.0
<1.0
<1.0
<1.0
<0.50
<1.0
<1.0
<1.0
<1.0
<10.0
<25
<10
<1.0
<1.0
<1.0
<50
<1.0
<1.0
<1.0
<1.0
<1.0
<0.50
<1.0
<1.0
<1.0
<1.0
<10.0
<25
<10
<1.0
<1.0
<1.0
<50
NA
<1.0
<1.0
<1.0
<1.0
NA
NA
1.9
<1.0
1.1
<10.0
NA
NA
31.4
50.3
48.6
<50
NA
<1.0
<1.0
<1.0
<1.0
NA
NA
<1.0
<1.0
<1.0
<10.0
NA
NA
<1.0
<1.0
<1.0
<50
<0.20
<1.0
<1.0
<1.0
<1.0
<0.50
<0.20
<1.0
<1.0
<1.0
<10.0
<25
2.8
<1.0
<1.0
<1.0
<50
NA
NA
NA
NA
NA
NA
NA
NA
NA
NA
NA
NA
NA
NA
NA
NA
NA
<1.0
<1.0
<1.0
<1.0
<1.0
11
<1.0
39
40.9
39
46
62
53
110
146
170
195
<0.70
<1.0
<1.0
<1.0
9.0
98
7.7
310
252
333
289
1500
910
1,240
1,680
1,640
1,720
<1.0
<1.0
<1.0
<1.0
<1.0
<0.50
<1.0
<1.0
<1.0
<1.0
<10.0
<25
<10
<1.0
<1.0
<1.0
<50.0
NA
NA
<1.0
<1.0
NA
NA
NA
<1.0
<1.0
<1.0
NA
NA
NA
<1.0
<1.0
<1.0
NA
<1.0
<1.0
<1.0
<1.0
<1.0
<0.50
<1.0
<1.0
<1.0
<1.0
<10.0
<25
<10
<1.0
<1.0
<1.0
<50
<1.0
<1.0
<1.0
<1.0
<1.0
<0.50
<1.0
<1.0
<1.0
<1.0
<10.0
<25
<10
<1.0
<1.0
<1.0
<50
NA
NA
<2.0
<2.0
NA
NA
NA
<2.0
<2.0
<2.0
NA
NA
NA
<2.0
<2.0
<2.0
NA
0
0
0
0
9
109
8
351
1 293
1 373
1 335
1,562
1 966
1,381
1,879
1 1,862
1,915
Notes: Compounds detected above the North Carolina 2L Standard are shown in bold.
A - indicates samples collected by Mortensen Engineering, Inc.
B - indicates samples collected by IT Corporation of North Carolina, Inc. (formerly Fluor Daniel GTI, Inc.)
NA denotes compound not analyzed
NS denotes well not sampled
Monitoring wells MW-16, MW-19, MW-24, MW-25 and MW-26 were destroyed during site construction activities.
Shallow gw summary-OCT2000 Page 4 of 5
Revised 12/6/00

TABLE 7
Historical Groundwater Analytical Data Summary - Shallow Wells
W. P. Ballard and Downgradient Properties
Greensboro, North Carolina
Sample Location: MW-23
MW-24
MW-25
MW-26
MW-27
MW-28
Sample Date: 10/7/96 A
10/7/96 B
12/02/98 B
10/25/99 B
3/22/00 B
9/13/00 B
10/7/96 A
10/7/96 B
10/7/96 A
1017/96 B
10/7/96 A
10/7/96 B
8/26/97 B
12/2/98 B
10/27/99 B
3/22/00 B
9/14/00 B
8/26/97 B
12/2/98 B
10/27/99 B
3/22/00 B
9/14l00 B
Analyte
NCAC 2L
Benzene (ug/L)
1.0 NA
NA
<1.0
1.1
<1.0
NA
NA
NA
NA
NA
NA
NA
NA
<1.0
<500
NS
NA
NA
<1.0
<10.0
<1.0
NA
Ethylbenzene (ug/L)
29 NA
NA
<1.0
2.5
<1.0
NA
NA
NA
NA
NA
NA
NA
NA
<1.0
<500
NS
NA
NA
<1.0
<10.0
<1.0
NA
Methylene Chloride (ug/L)
5.0 9.3
6.5
<5.0
<5.0
<5.0
<5.0
<0.05
<1.0
<2.5
<1.0
<2.5
<1.0
<200
<5.0
<2500
NS
<250
<200
<5.0
<50.0
<5.0
<50.0
Chloroform (ug/L)
0.19 4.7
3.8
<1.0
<1.0
<1.0
<1.0
<0.50
<0.19
<0.50
<0.19
0.97
0.49
<200
<1.0
<500
NS
<50
<200
<1.0
<10.0
<1.0
10
Chloromethane (ug/L)
none <0.50
<2.0
<1.0
<1.0
<1.0
<1.0
<0.50
<2.0
<0.50
<2.0
<0.50
<2.0
<200
<1.0
<500
NS
<50
<200
<1.0
<10.0
<1.0
<10.0
Carbon Tetrachloride (ug/L)
0.3 <0.50
<0.30
<1.0
<1.0
<1.0
<1.0
<0.50
<0.30
<0.50
<0.30
<0.50
<0.30
<200
<1.0
<500
NS
<50
<200
<1.0
<10.0
<1.0
<10.0
1,1-Dichloroethane (ug/L)
700 <0.50
<1.0
<1.0
<1.0
<1.0
<1.0
<0.50
<1.0
<0.50
<1.0
<0.50
<1.0
<200
<1.0
<500
NS
<50
<200
<1.0
<10.0
<1.0
<10.0
1,2-Dichloroethane (ug/L)
0.38 <0.50
<1.0
<1.0
<1.0
<1.0
<1.0
<0.50
<1.0
<0.50
<1.0
<0.50
<1.0
<200
<1.0
<500
NS
<50
<200
<1.0
<10.0
<1.0
<10.0
1,1-Dichloroethene (ug/L)
7.0 <0.50
<1.0
<1.0
<1.0
<1.0
<1.0
<0.50
<1.0
<0.50
<1.0
<0.50
<1.0
<200
<1.0
<500
NS
<50
<200
<1.0
<10.0
<1.0
<10.0
cis- 1, 2-Dich loroethene (ug/L)
70 NA
NA
<1.0
<1.0
<1.0
<1.0
NA
NA
NA
NA
NA
NA
12,000
2,300
3,700
NS
2,300
280
1,170
323
413
385
trans- 1, 2-Dich loroethene (ug/L)
70 NA
NA
<1.0
<1.0
<1.0
<1.0
NA
NA
NA
NA
NA
NA
<200
13
<500
NS
<50
<200
3
<10.0
1.2
<10.0
1,2-Dichloropropane (ug/L)
0.56 <0.50
<0.20
<1.0
<1.0
<1.0
<1.0
<0.50
<0.20
<0.50
<0.20
<0.50
<0.20
<200
<1.0
<500
NS
<50
<200
<1.0
<10.0
<1.0
<10.0
Methyl tert-butyl ether (MTBE) (ug/1)
200 NA
NA
NA
NA
NA
NA
NA
NA
NA
NA
NA
NA
NA
NA
<500
NS
NA
NA
NA
<10.0
NA
NA
Trichloroethene (ug/L)
2.8 <0.50
<1.0
<1.0
<1.0
<1.0
<1.0
<0.50
<1.0
<0.50
<1.0
<0.50
<1.0
64,000
8,340
15,900
NS
4,680
180
800
192
126
178
Tetrachloroethene (ug/L)
0.7 <0.50
<0.70
<1.0
<1.0
<1.0
<1.0
<0.50
<0.70
<0.50
<0.70
<0.50
<0.70
<200
<1.0
<500
NS
85
<200
70
<10.0
20
<10.0
1,1,2,2-Tetrachloroethane (ug/L)
none <0.50
<1.0
<1.0
<1.0
<1.0
<1.0
<0.50
<1.0
<0.50
<1.0
<0.50
<1.0
<200
<1.0
<500
NS
<50.0
<200
<1.0
<10.0
<1.0
<10.0
Toluene (ug/L)
1,000 NA
NA
<1.0
<1.0
<1.0
NA
NA
NA
NA
NA
NA
NA
NA
NA
<500
NS
NA
NA
<1.0
<10.0
<1.0
NA
1,1,1-Trichloroethane (ug/L)
200 <0.50
<1.0
<1.0
<1.0
<1.0
<1.0
<0.50
<1.0
<0.50
<1.0
<0.50
<1.0
<200
<1.0
<500
NS
<50
<200
<1.0
<10.0
<1.0
<10.0
1, 1,2-Trichloroethane (ug/L)
none <0.50
<1.0
<1.0
<1.0
<1.0
<1.0
<0.50
<1.0
<0.50
<1.0
<0.50
<1.0
<200
<1.0
<500
NS
<50
<200
<1.0
<10.0
<1.0
<10.0
Xylenes, Total (ug/L)
NA
NA
<2.0
<2.0
<2.0
NA
NA
NA
NA
NA
NA
NA
NA
NA
<1,000
NS
NA
NA
1 <2.0
1 <20.0
1 <2.0
1 NA
Total VOCs Detected (ug/L)
14
10
0
4
0
0
0
0
0
0
1
0
76,000
10,653
19,600
0
7,065
460
2,043
515
561
573
Sample Location:
LMP-1
LMP-2
PTAS
PT-2S
PT-3S
PT-4S
PT-5S
Sample Date:
01/21/99 B
10/26/99 B
3/22/00 B
9/14/00 8
01/21/99 B
10/26/99 B
3/22/00 B
9114/00 B
8/29/97 B
3/23/00 B
9/12/00 B
8/29/97 B
3/23/00 B
9/12/00 B
8/29/97 B
3/23/00 B
9/12/00 B
8/29/97 B
3/23/00 B
9/12100 B
8/29/97 B
3/23/00 B
9/11l00 B
Analyte
NCAC 2L
Benzene (ug/L)
1.0
NA
<1.0
<1.0
NA
NA
<1.0
<1.0
NA
<500
NS
<100
<500
310
NS
<50
<1.0
<200
<5
<1.0
<100
<500
2.2
<1,000
Ethylbenzene (ug/L)
29
NA
<1.0
<1.0
NA
NA
<1.0
<1.0
NA
<500
NS
<100
<500
5.6
NS
<50
<1.0
<200
<5
<1.0
<100
<500
<1.0
<1,000
Methylene Chloride (ug/L)
5.0
<5.0
<5.0
<5.0
<100
<5.0
<5.0
<5.0
<25
<500
NS
<500
<500
<5.0
NS
<50
<5.0
<1,000
<5
<5.0
<100
<500
<5.0
<1,000
Chloroform (ug/L)
0.19
<1.0
<1.0
<1.0
<20
<1.0
1.4
<1.0
<5.0
<500
NS
<100
<500
69.5
NS
<50
20.6
<200
<5
4.3
<100
<500
5.2
<1,000
Chloromethane(ug/L)
none
<1.0
<1.0
<1.0
<20
<1.0
<1.0
<1.0
<5.0
<1,000
NS
<100
<1,000
<1.0
NS
<100
<1.0
<200
<10
<1.0
<100
<1,000
<1.0
<1,000
Carbon Tetrachloride (ug/L)
0.3
<1.0
<1.0
<1.0
<20
<1.0
<1.0
<1.0
<5.0
<500
NS
<100
<500
<1.0
NS
<50
<1.0
<200
<5
2.5
<100
<500
<1.0
<1,000
1,1-Dichloroethane(ug/L)
700
<1.0
<1.0
<1.0
<20
<1.0
<1.0
<1.0
<5.0
<500
NS
<100
<500
<1.0
NS
<50
<1.0
<200
<5
<1.0
<100
<500
<1.0
<1,000
1,2-Dichloroethane (ug/L)
0.38
<1.0
<1.0
<1.0
<20
<1.0
1.7
<1.0
<5.0
<500
NS
<100
<500
72.2
NS
<50
3.6
<200
<5
3.6
<100
<500
<1.0
<1,000
1, 1 -Dichloroethene (ug/L)
7.0
<1.0
<1.0
<1.0
<20
<1.0
<1.0
<1.0
<5.0
<500
NS
<100
<500
<1.0
NS
<50
<1.0
<200
5.4
4.4
<100
<500
<1.0
<1,000
cis-1,2-Dichloroethene (ug/L)
70
47.8
21.2
12.6
<20
10
10.9
9.9
7
<500
NS
<100
<500
8.6
NS
<50
34.3
<200
3,900
5,800
1,700
<500
<500
<1,000
trans- 1,2-Dichloroethene (ug/L)
70
1.4
<1.0
1.6
<20
<1.0
<1.0
<1.0
<5.0
<500
NS
<100
<500
<1.0
NS
<50
<1.0
<200
<5
8.5
<100
<500
<1.0
<1,000
1,2-Dichloropropane (ug/L)
0.56
1370
1560
<1.0
1,370
238
316
<1.0
292
<500
NS
<100
<500
<1.0
NS
<50
<1.0
<200
<5
<1.0
<100
<500
<1.0
<1,000
Methyl tert-butyl ether (MTBE) (ug/1)
200
<1.0
<1.0
NA
NA
<1.0
NA
NA
NA
<500
NS
<100
<500
NS
NS
<50
NS
<200
<5
NS
<100
<500
NS
<1,000
Trichloroethene (ug/L)
2.8
<1.0
<1.0
34.7
120
<1.0
<1.0
8.4
26.5
<500
NS
<100
<500
100
NS
1,800
2,650
<200
2,900
2,290
890
<500
39.1
<1,000
Tetrachloroethene (ug/L)
0.7
192
145
913
586
25.4
45.5
80.6
65.5
12,000
NS
2,770
9,800
12,100
NS
2,400
6,400
2,520
120
180
<100
20,000
40,400
10,600
1,1,2,2-Tetrachloroethane (ug/L)
none
<1.0
<1.0
<1.0
<20.0
<1.0
<1.0
<1.0
<5.0
<500
NS
<100
<500
<1.0
NS
<50
<1.0
<200
<5
<1.0
<100
<500
2.1
<1,000
Toluene (ug/L)
1,000
NA
<1.0
<1.0
NA
NA
<1.0
<1.0
NA
<500
NS
<100
<500
51
NS
<50
<1.0
<200
<5
<1.0
<100
<500
<1.0
<1,000
1,1,1-Trichloroethane(ug/L)
200
<1.0
<1.0
<1.0
<20
<1.0
<1.0
<1.0
<5.0
<500
NS
<100
<500
<1.0
NS
<50
<1.0
<200
<5
<1.0
<100
<500
<1.0
<1,000
1,1,2-Trichloroethane(ug/L)
none
<1.0
<1.0
<1.0
<20
<1.0
8.3
<1.0
<5.0
<500
NS
<100
<500
11.5
NS
<50
3.6
<200
<5
<1.0
<100
<500
37.4
<1,000
Xylenes, Total (ug/L)
NA
<2.0
<2.0
NA
NA
<2.0
<2.0
NA
<500
NS
<100
<500
90.6
NS
<50
<2.0
<200
<5
<2.0
<100
<500
<2.0
<1,000
Total VOCs Detected (ug/L)
,.'
1,611
1,726
962
2,076
273
384
99
391
12,000
0
2,770
9,800
12,819
0
4,200
9,112
2,520
6,925
8,293
2,590
20,000
40,486
10,600
Notes: Compounds detected above the North Carolina 2L Standard are shown in bold.
A - indicates samples collected by Mortensen Engineering, Inc.
B - indicates samples collected by IT Corporation of North Carolina, Inc. (formerly Fluor Daniel GTI, Inc.)
NA denotes compound not analyzed
NS denotes well not sampled
Monitoring wells MW-16, MW-19, MW-24, MW-25 and MW-26 were destroyed during site construction activities.
Shallow gw summary-OCT2000 Page 5 of 5 Revised 12/6/00

Sample Location:
Sample Date:
Analysis Method:
Analyte
NCAC 2L
Benzene (ug/L)
1.0
Bromoform (ug/L)
0.19
1,2-Dichlorobenzene (ug/L)
none
1.3-Dichlorobenzene (ug/L)
none
Methylene Chloride (ug/L)
5.0
Chloroform (ug/L)
0.19
Chloromethane (ug/L)
none
Carbon Tetrachloride (ug/L)
0.3
1. 1 -Dichloroethane (ug/L)
700
1,2-Dichloroethane (ug/L)
0.38
Vinyl chloride (ug/L)
0.015
1,1-Dichloroethene (ug/L)
7.0
cis-1,2-Dichloroethene (ug/L)
70
trans-1,2-Dichloroethene (ug/L)
70
1,2-Dichloropropane (ug/L)
0.56
Ethylbenzene (ug/L)
29
Trichloroethene (ug/L)
2.8
Tetrachloroethene (ug/L)
0.7
Toluene (ug/L)
1,000
1,1,1-Trichloroethane (ug/L)
200
1, 1,2-Trichloroethane (ug/L)
none
TABLE 8
Historical Groundwater Analysis Data Summary - Deep Wells
W. P. Ballard and Downgradient Properties
Greensboro, North Carolina
DW-1
DW-2
DW3
7/22/94 A
7/12/96 A
12/2/98 B
10/27/99 B
3/23/00 B
9/7/00 B
10/19/00 B
7/22/94 A
7/11/96 A
12/2/98 B
10/28/99 B
3/22/00 B
9!1/00 B
7/22194 A
7/10/96 A
7/10/96 B
12/2/98 B
10/28/99 B
3/23/00 B
9/7/00 B
10/18/00 B
EPA 601
EPA601
EPA 601
EPA 601
EPA 601
EPA 601
EPA 601
EPA 601
EPA 601
EPA 601
EPA 601
EPA 601
EPA 601
EPA 601
EPA 601
EPA 601
EPA 601
EPA 601
EPA 601
EPA 601/60
EPA 601/60
NA
<1.0
<1.0
<1.0
<1.0
NA
NA
NA
NA
<1.0
<10.0
<1.0
NA
NA
NA
NA
<1.0
<5,000
<1.0
<1.0
<1,000
<1.0
<1.0
<1.0
1.0
<1.0
<1.0
<10
<1.0
<2.5
<1.0
<10.0
<1.0
<1.0
<100
<2,500
<1,000
<1.0
<5,000
<1.0
<1.0
<1,000
<1.0
<1.0
<1.0
<1.0
<1.0
<1.0
<10
<1.0
<2.5
<1.0
<10.0
<1.0
<1.0
<100
<2,500
<1,000
<1.0
<5,000
<1.0
<1.0
<1,000
<1.0
<1.0
<1.0
<1.0
<1.0
<1.0
<10
<1.0
<2.5
<1.0
<10.0
<1.0
<1.0
<100
<2,500
<1,000
<1.0
<5,000
<1.0
<1.0
<1,000
1.2
14
<5.0
<5.0
<5.0
<5.0
<50
<1.0
<12
<5.0
<50.0
<5.0
<5.0
<100
<12,000
<1,000
50
<25,000
<5.0
<5.0
<5000
6.1
<1.0
<1.0
1.2
<1.0
<1.0
<10
3.2
<2.5
<1.0
<10.0
<1.0
<1.0
<100
<2;500
<1,000
4
<5,000
1.4
<1.0
<1,000
<1.0
<1.0
<1.0
<1.0
<1.0
<1.0
<10
<1.0
<2.5
<1.0
<10.0
<1.0
<1.0
<100
<2,500
<2,000
<1.0
<5,000
<1.0
<1.0
<1,000
<1.0
<1.0
<1.0
<1.0
<1.0
<1.0
<10
<1.0
<2.5
<1.0
<10.0
<1.0
<1.0
<100
<2,500
<1,000
<1.0
<5,000
<1.0
<1.0
<1,000
<1.0
<1.0
<1.0
<1.0
16.6
<1.0
<10
<1.0
<2.5
<1.0
<10.0
3.5
<1.0
<100
<2,500
<1,000
<1.0
<5,000
<1.0
<1.0
<1,000
<1.0
<1.0
<1.0
<1.0
<1.0
<1.0
<10
<1.0
<2.5
<1.0
<10.0
<1.0
<1.0
<100
<2,500
<1,000
<1.0
<5,000
<1.0
<1.0
<1,000
<1.0
<1.0
<1.0
<1.0
<1.0
<1.0
<10
<1.0
<2.5
<1.0
<10.0
<1.0
<1.0
<100
<2,500
<1,000
<1.0
<5,000
<1.0
<1.0
<1,000
1.6
4.6
<1.0
9.4
<1.0
26
<10
23
<2.5
<1.0
<10.0
<1.0
5.2
<100
<2,500
<1,000
3
<5,000
<1.0
<1.0
<1,000
NA
NA
29.2
10.5
7.6
<1.0
<10
NA
NA
<1.0
<10.0
<1.0
<1.0
NA
NA
NA
24.5
<5,000
7.9
<1.0
<1,000
NA
NA
<1.0
<1.0
<1.0
<1.0
<10
NA
NA
<1.0
<10.0
<1.0
<1.0
NA
NA
NA
1.4
<5,000
<1.0
<1.0
<1,000
<1.0
<1.0
<1.0
<1.0
<1.0
<1.0
<10
<1.0
<2.5
<1.0
<10.0
<1.0
<1.0
<100
<2,500
<1,000
<1.0
<5,000
<1.0
<1.0
<1,000
NA
<1.0
<1.0
<1.0
<1.0
NA
NA
NA
NA
<1.0
<10.0
<1.0
NA
NA
NA
NA
<1.0
<5,000
<1.0
NA
<1,000
<1.0
3
52.1
8.6
11.2
<1.0
<10
<1.0
<2.5
1
<10.0
<1.0
<1.0
<100
<2,500
<1,000
56.1
<5,000
32.5
<1.0
<1,000
31
59
182
170
358
464
298
55
110
126
150
107
43.8
19,000
82,000
60,000.
66,000
174,000
73,200
27,600
48,800
NA
<1.0
<1.0
<1.0
<1.0
NA
NA
NA
NA
<1.0
<10.0
<1.0
NA
NA
NA
NA
<1.0
<5,000
10
NA
<1,000
1.4
4.8
3
4.8
8.8
<1.0
<10
4.4
5.6
<1.0
<10.0
2.0
<1.0
<100
<2,500
<1,000
<1.0
<5,000
<1.0
<1.0
<1,000
<1.0
<1.0
<1.0
<1.0
<1.0
<1.0
<10
<1.0
<2.5
<1.0
<10.0
<1.0
<1.0
<100
<2,500
<1,000
21.1
<5,000
<1.0
<1.0
<1,000
NA
1 <2.0
1 <2.0
1 <2.0
1 <2.
1 NA
NA
NA
NA
1 <2.0
1 <20.0
<2.0
NA
NA
NA
I NA
1 <2.0
1 <10,000
1 <2.0
1 NA
<2,000
41
1 85
1 266
1 206 1
402
1 490
298
86
116
1 127
1 150
113
49
19,000
82,000
1 60,000
1 66,160
1 174,000
1 73,251
1 27,600
48,800
Sample Location:
DW-4
DW-5
DW-6
7122/94 A
7/11/96 A
12/2/98 B
10/28/99 B
3/23/00 B
9/14/00 B
10/19/00 B
7/15/96 A
7/15/96 B
12/2/98 B
10/27/99 B
3/22/00 B
9/13100 B
7/15/96 A
7/15/96 B
Sample Date:
Analysis Method:
EPA 601
EPA 601
EPA 601
EPA 601
EPA 601
EPA 601
EPA 601
EPA 601
EPA 601
EPA 601
EPA 601
EPA 601
EPA 601
EPA 601
EPA 601
Analyte
NCAC 2L
Benzene (ug/L)
1.0
NA
NA
<1.0
<500
<1.0
NA
NA
NA
NA
<1.0
<1.0
<1.0
NA
NA
NA
Bromoform (ug/L)
0.19
<100
<250
<1.0
<500
<1.0
<1.0
<50
<1.0
<10
<1.0
<1.0
<1.0
<1.0
<1.0
<1.0
1,2-Dichlorobenzene (ug/L)
none
<100
<250
<1.0
<500
<1.0
<1.0
<50
<1.0
<10
<1.0
<1.0
<1.0
<1.0
<1.0
<1.0
1.3-Dichlorobenzene (ug/L)
none
<100
<250
<1.0
<500
<1.0
<1.0
<50
<1.0
<10
<1.0
<1.0
<1.0
<1.0
<1.0
<1.0
Methylene Chloride (ug/L)
5.0
<100
<1,200
<5.0
<2500
<5.0
<5.0
<250
<5
<10
<5.0
<5.0
<5.0
<5.0
<5
<1.0
Chloroform (ug/L)
0.19
<100
<250
<1.0
<500
<1.0
<1.0
<50
20
31
20
23.1
25
23
1.5
2.6
Chloromethane (ug/L)
none
<100
<250
<1.0
<500
<1.0
<1.0
<50
<1.0
<10
<1.0
<1.0
<1.0
<1.0
<1.0
<2.0
Carbon Tetrachloride (ug/L)
0.3
<100
<250
<1.0
<500
<1.0
<1.0
<50
100
140
27
73.2
98.3
63
<1.0
<1.0
1,1-Dichloroethane (ug/L)
700
<100
<250
<1.0
<500
<1.0
<1.0
<50
<1.0
<10
<1.0
<1.0
<1.0
<1.0
<1.0
<1.0
1,2-Dichloroethane (ug/L)
0.38
<100
<250
<1.0
<500
<1.0
<1.0
<50
2.7
<10
<1.0
<1.0
5
<1.0
<1.0
<1.0
Vinyl chloride (ug/L)
0.015
<100
<250
<1.0
<500
<1.0
<1.0
<50
<1.0
<10
<1.0
<1.0
<1.0
<1.0
<1.0
<1.0
1,1-Dichloroethene (ug/L)
7.0
<100
<250
<1.0
<500
<1.0
<1.0
<50
<1.0
<10
<1.0
<1.0
<1.0
<1.0
<1.0
<1.0
cis-1,2-Dichloroethene (ug/L)
70
NA
NA
97.7
<500
8.7
<1.0
<50
NA
NA
14
22.1
21.8
20
NA
NA
trans-1,2-Dichloroethene (ug/L)
70
NA
NA
<1.0
<500
<1.0
<1.0
<50
NA
NA
<1.0
<1.0
<1.0
<1.0
NA
NA
1,2-Dichloropropane (ug/L)
0.56
<100
<250
<1.0
<500
<1.0
<1.0
<50
<1.0
<10
<1.0
<1.0
<1.0
<1.0
<1.0
<1.0
Ethylbenzene (ug/L)
29
NA
NA
<1.0
<500
<1.0
NA
NA
NA
NA
<1.0
<1.0
<1.0
NA
NA
NA
Trichloroethene (ug/L)
2.8
<100
<250
64.4
<500
20.4
<1.0
<50
94
120
78
261
287
449
<1.0
<1.0
Tetrachloroethene (ug/L)
0.7
10,000
16,000
8,600
23,900
24,900
<1.0
<50
19
28
54
52.3
90
70
1.1
1.6
Toluene (ug/L)
1,000
NA
NA
<1.0
<500
<1.0
NA
NA
NA
NA
<1.0
<1.0
<1.0
NA
NA
NA
1. 1, 1 -Trichloroethane (ug/L)
200
<100
<250
<1.0
<500
<1.0
<1.0
<50
<1.0
<10
<1.0
<1.0
<1.0
<1.0
<1.0
<1.0
1. 1, 2-Trichloroethane (ug/L)
none
<100
<250
<1.0
<500
<1.0
<1.0
<50
<1.0
<10
<1.0
<1.0
<1.0
<1.0
<1.0
<1.0
X lenes, Total ug/L
530
NA
NA
1 <2.0
1 <1,000
1 <2.0
NA
NA
NA
NA
<2.0
<2.0
<2.0
NA
NA
NA
Total VOCs ug/L
10,000
16,000
1 8.762
1 23,900
1 24,929
0
0
236
319
193
432
527
625
3
4
Notes: Compounds detected above the North Carolina 2L Standard are shown in bold.
A - indicates samples collected by Mortensen Engineering, Inc.
B - indicates samples collected by IT Corporation of North Carolina, Inc. formerly Fluor Daniel GTI, Inc.
NA = denotes compound not analyzed
NS = indicates location not sampled
Deep monitoring wells DW-6, DW-9, DW-10 and DW-11 were destroyed during site construction activities.
deep gw summary 1 of 4 Revised 12/6/00

TABLE 8
Historical Groundwater Analysis Data Summary - Deep Wells
W. P. Ballard and Downgradient Properties
Greensboro, North Carolina
Sample Location:
DW-7
DW-8
DW-9
7/15/96 A
7/15/96 B
12/2/98 B
10/26/99 B
3/23/00 B
9/12/00 B
7/15/96 A
7/15/96 B
12/2/98 B
10/26/99 B
3/23/00 B
9/13100 B
7/15/96 A
7/15/96 B
10/&6 A
10/6/96 B
12/2/98 B
Sample Date:
Analysis Method:
EPA 601
EPA 601
EPA 601
EPA 601
EPA 601
EPA 601
EPA 601
EPA 601
EPA 601
EPA 601
EPA 601
EPA 601
EPA 601
EPA 601
EPA 601
EPA 601
EPA 601
Analyte
NCAC 2L
Benzene (ug/L)
1.0
NA
NA
<1.0
<10.0
<1.0
NA
NA
NA
<50.0
<1.0
<1.0
NA
NA
NA
NA
NA
<1.0
Bromoform (ug/L)
0.19
<5
<1.0
<1.0
<10.0
<1.0
<1.0
<100
<100
<50.0
<1.0
<1.0
<1.0
<1.0
<1.0
<0.50
<1.0
<1.0
1,2-Dichlorobenzene (ug/L)
none
<5
<1.0
<1.0
<10.0
<1.0
<1.0
<100
<100
<50.0
<1.0
<1.0
<1.0
<1.0
<1.0
<0.50
<1.0
<1.0
1.3-Dichlorobenzene (ug/L)
none
<5
<1.0
<1.0
<10.0
<1.0
<1.0
<100
<100
<50.0
<1.0
<1.0
<1.0
<1.0
<1.0
<0.50
<1.0
<1.0
Methylene Chloride (ug/L)
5.0
<25
<1.0
<5.0
<50.0
<5.0
<5.0
<500
<100
<250
<5.0
<5.0
<5.0
<5
<1.0
5.3
6
<5.0
Chloroform (ug/L)
0.19
<5
2.9
<1.0
<10.0
<1.0
<1.0
<100
<100
<50.0
5.6
3
<1.0
3.4
4.5
1.5
1.2
<1.0
Chloromethane (ug/L)
none
<5
<2.0
<1.0
<10.0
NA
<1.0
<100
<200
<50.0
<1.0
<1.0
<1.0
<1.0
<2.0
<0.50
<2.0
<1.0
Carbon Tetrachloride (ug/L)
0.3
<5
<1.0
<1.0
<10.0
<1.0
<1.0
<100
<100
<50.0
19.7
28.1
<1.0
<1.0
<1.0
<0.50
<0.30
<1.0
1,1-Dichloroethane (ug/L)
700
<5
<1.0
<1.0
<10.0
<1.0
<1.0
<100
<100
<50.0
<1.0
<1.0
<1.0
<1.0
<1.0
<0.50
<1.0
<1.0
1,2-Dichloroethane (ug/L)
0.38
<5
<1.0
<1.0
<10.0
<1.0
<1.0
<100
<100
<50.0
<1.0
<1.0
<1.0
<1.0
<1.0
<0.50
<1.0
<1.0
Vinyl chloride (ug/L)
0.015
<5
<1.0
<1.0
<10.0
<1.0
<1.0
<100
<100
<50.0
<1.0
<1.0
<1.0
<1.0
<1.0
<0.50
<1.0
<1.0
1,1-Dichloroethene (ug/L)
7.0
<5
<1.0
<1.0
<10.0
<1.0
<1.0
<100
<100
<50.0
<1.0
<1.0
<1.0
<1.0
<1.0
<0.50
<1.0
<1.0
cis-1,2-Dichloroethene (ug/L)
70
NA
NA
<1.0
<10.0
<1.0
<1.0
NA
NA
280
530
445
420
NA
NA
NA
NA
NA
trans-1,2-Dichloroethene (ug/L)
70
NA
NA
<1.0
<10.0
<1.0
<1.0
NA
NA
<50.0
2.1
22.8
<1.0
NA
NA
NA
NA
<1.0
1,2-Dichloropropane (ug/L)
0.56
<5
2.1
<1.0
15
<1.0
<1.0
<100
<100
<50.0
1.1
<1.0
<1.0
<1.0
<1.0
<0.50
<0.20
<1.0
Ethylbenzene (ug/L)
29
NA
NA
<1.0
<10.0
<1.0
NA
NA
NA
<50.0
<1.0
<1.0
NA
NA
NA
NA
NA
<1.0
Trichloroethene (ug/L)
2.8
<5
1.0
10
<10.0
2
<1.0
630
440
380
1,300
1,360
1,380
<1.0
<1.0
<0.50
<1.0
<1.0
Tetrachloroethene (ug/L)
0.7
230
180
205
221
270
295
3,700
2,600
1,620
4,290
5,150
4,020
<1.0
3.4
<0.50
<0.70
<1.0
Toluene (ug/L)
1.000
NA
NA
<1.0
<10.0
<1.0
NA
NA
NA
<50.0
<1.0
<1.0
NA
NA
NA
NA
NA
<1.0
1,1,1-Trichloroethane (ug/L)
200
<5
<1.0
<1.0
<10.0
<1.0
<1.0
<100
<100
<50.0
<1.0
<1.0
<1.0
<1.0
<1.0
<0.50
<1.0
<1.0
1,1,2-Trichloroethane (ug/L)
none
<5
<1.0
<1.0
<10.0
<1.0
<1.0
<100
<100
<50.0
<1.0
<1.0
<1.0
<1.0
<1.0
<0.50
<1.0
<1.0
X lenes, Total ug/L
530
NA
I NA
1 <2.0
1 <20.0
1 <2.0
1 NA
NA
I NA
I <100
1 <2.0
1 <2.0
1 NA
I NA
I NA
I NA
I NA
1 <2.0
Total VOCs ug/L
230
1 185
1 215
1 236
1 272
1 295
1 4,330
1 3,040
1 2,280
1 6,149
1 7,009
1 5,820
1 3
1 8
1 .7
1 7
1110
Sample Location:
DW-10
DW-11
DW-12
DY11-13
7/15/96 A
7/15/96 B
10/6/96 A
10/6/96 B
10/6/96 A
10/6/96 B
12/2/98 B
10/6/96 A
10/6/96 B
12/2/98 B
10/25/99 B
3/21/00 B
9/13/00 B
10/25/99 B
3/21/00 B
9/13/00 B
Sample Date:
Analysis Method:
EPA 601
EPA 601
EPA 601
EPA 601
EPA 601
EPA 601
EPA 601
EPA 601
EPA 601
EPA 601
EPA 601
EPA 601
EPA 601
EPA 601
EPA 601
EPA 601
Analyte
NCAC 2L
Benzene (ug/L)
1.0
NA
NA
NA
NA
NA
NA
<1.0
NA
NA
<1.0
<1.0
<1.0
NA
<1.0
<1.0
NA
Bromoform (ug/L)
0.19
<1.0
<1.0
<0.50
<1.0
<0.50
<1.0
<1.0
<0.50
<1.0
<1.0
<1.0
<1.0
<1.0
<1.0
<1.0
<1.0
1,2-Dichlorobenzene (ug/L)
none
<1.0
<1.0
<0.50
<1.0
<0.50
<1.0
<1.0
<0.50
<1.0
<1.0
<1.0
<1.0
<1.0
<1.0
<1.0
<1.0
1.3-Dichlorobenzene (ug/L)
none
<1.0
<1.0
<0.50
<1.0
<0.50
<1.0
<1.0
<0.50
<1.0
<1.0
<1.0
<1.0
<1.0
<1.0
<1.0
<1.0
Methylene Chloride (ug/L)
5.0
<5
<1.0
<2.5
<1.0
<2.5
<1.0
<5.0
<2.5
<1.0
<5.0
<5.0
<5.0
<5.0
<5
<5.0
<5.0
Chloroform (ug/L)
0.19
<1.0
3.1
<0.50
<0.19
7.1
5.4
<1.0
4.1
4.2
<1.0
<1.0
<1.0
<1.0
<1.0
<1.0
<1.0
Chloromethane (ug/L)
none
<1.0
<2.0
<0.50
<2.0
<0.50
<2.0
<1.0
<0.50
<2.0
<1.0
<1.0
<1.0
<1.0
<1.0
<1.0
<1.0
Carbon Tetrachloride (ug/L)
0.3
<1.0
<1.0
<0.50
<0.30
<0.50
<0.30
<1.0
<0.50
<0.030
<1.0
<1.0
<1.0
<1.0
<1.0
<1.0
<1.0
1,1-Dichloroethane (ug/L)
700
<1.0
<1.0
<0.50
<1.0
<0.50
<1.0
<1.0
<0.50
<1.0
<1.0
<1.0
<1.0
<1.0
<1.0
<1.0
<1.0
1,2-Dichloroethane (ug/L)
0.38
<1.0
<1.0
<0.50
<1.0
<0.50
<1.0
<1.0
<0.50
<1.0
<1.0
<1.0
<1.0
<1.0
<1.0
<1.0
<1.0
Vinyl chloride (ug/L)
0.015
<1.0
<1.0
<0.50
<1.0
<0.50
<1.0
<1.0
<0.50
<1.0
<1.0
<1.0
<1.0
<1.0
<1.0
<1.0
<1.0
1,1-Dichloroethene (ug/L)
7.0
<1.0
<1.0
<0.50
<1.0
<0.50
<1.0
<1.0
<0.50
<1.0
<1.0
<1.0
<1.0
<1.0
<1.0
<1.0
<1.0
cis-1,2-Dichloroethene (ug/L)
70
NA
NA
NA
NA
NA
NA
<1.0
NA
NA
<1.0
<1.0
<1.0
<1.0
5.0
5.6
<1.0
trans-1,2-Dichloroethene (ug/L)
70
NA
NA
NA
NA
NA
NA
<1.0
NA
NA
<1.0
<1.0
<1.0
<1.0
<1.0
<1.0
<1.0
1,2-Dichloropropane (ug/L)
0.56
<1.0
<1.0
<0.50
<0.20
<0.50
<0.20
<1.0
<0.50
<0.20
<1.0
<1.0
<1.0
<1.0
<1.0
<1.0
<1.0
Ethylbenzene (ug/L)
29
NA
NA
NA
NA
NA
NA
<1.0
NA
NA
<1.0
<1.0
<1.0
NA
<1.0
<1.0
NA
Trichloroethene (ug/L)
2.8
<1.0
<1.0
<0.50
<1.0
<0.50
<1.0
<1.0
<0.50
<1.0
<1.0
<1.0
<1.0
<1.0
21.7
31.7
44
Tetrachloroethene (ug/L)
0.7
<1.0
1.9
<0.50
<0.70
<0.50
<0.70
<1.0
<0.50
<0.70
<1.0
<1.0
<1.0
<1.0
421
720
680
Toluene (ug/L)
1,000
NA
NA
NA
NA
NA
NA
<1.0
NA
NA
<1.0
<1.0
<1.0
NA
<1.0
<1.0
NA
1,1,1-Trichloroethane (ug/L)
200
<1.0
<1.0
<0.50
<1.0
<0.50
<1.0
<1.0
<0.50
<1.0
<1.0
<1.0
<1.0
<1.0
<1.0
<1.0
<1.0
1,1,2-Trichloroethane (ug/L)
none
<1.0
<1.0
<0.50
<1.0
<0.50
<1,0
<1.0
<0.50
<1.0
<1.0
<1.0
<1.0
<1.0
<1.0
<1.0
<1.0
X lenes, Total ug/L
530
NA
NA
NA
NA
NA
NA
<2.0
NA
NA
<2.0
<2.0
<2.0
NA
<2.0
<2.0
NA
Total VOCs ug/L
0
5
0
0
7
5
0
4
4
0
0
0
0
448
757
724
Notes: Compounds Compounds detected above the North Carolina 2L Standard are shown in bold.
A - indicates A - indicates samples collected by Mortensen Engineering, Inc.
B - indicates B - indicates samples collected by IT Corporation of North Carolina, Inc. formerly Fluor Daniel GTI, Inc.
NA = denote NA = denotes compound not analyzed
NS = indicat NS = indicates location not sampled
Deep monito Deep monitoring wells DW-6, DW-9, DW-10 and DW-11 were destroyed during site construction activities.
deep gw summery 2 of 4 Revised 12/6/00

TABLE 8
Historical Groundwater Analysis Data Summary - Deep Wells
W. P. Ballard and Downgradient Properties ;
Greensboro, North Carolina
Sample Location:
DW-14
DW-15
DMP-1
DMP-2
DMP-3
10/25/99 B
3/21/00 B
9/13/00 B
10/25/99 B
3/21100 B
9/13/00 B
1/21/99 B'
10/27/99 B
3/22/00 B
9/13/00 B
1/21/99 B
10/27/99 B
3/22/00 B
9/13/00 B
1/21/99 B
10/26/99 B
3/25/00 B
9/12/00 B
Sample Date:
Analysis Method:
EPA 601
EPA 601
EPA 601
EPA 601
EPA 601
EPA 601
EPA 601
EPA 601
EPA 601
EPA 601
EPA 601
EPA 601
EPA 601
EPA 601
EPA 601.
EPA 601
EPA 601
EPA 601
Analyte
NCAC 2L
Benzene (ug/L)
1.0
<1.0
<1.0
NA
<1.0
<1.0
NA
NA
1.6
<1.0
NA
NA
<1.0
<1.0
NA
NA
<1.0
<1.0
NA
Bromoform (ug/L)
0.19
<1.0
<1.0
<1.0
<1.0
<1.0
<1.0
<1.0
<1.0
<1.0
<1.0
<5.0
<1.0
<1.0
<1.0
<5.0
<1.0
<1.0
<1.0
1,2-Dichlorobenzene (ug/L)
none
<1.0
<1.0
<1.0
<1.0
<1.0
<1.0
<1.0
4.0
7.5
<1.0
<5.0
<1.0
<1.0
<1.0
<5.0
<1.0
<1.0
<1.0
1.3-Dichlorobenzene (ug/L)
none
<1.0
<1.0
<1.0
<1.0
<1.0
<1.0
<1.0
1.1
<1.0
<1.0
<5.0
<1.0
<1.0
<1.0
<5.0
<1.0
<1.0
<1.0
Methylene Chloride (ug/L)
5.0
<5
<5.0
<5.0
<5
<5.0
<5.0
<5.0
8.0
12.1
<5.0
<5.0
<5.0
<5.0
<5.0
<25.0
<5.0
<5.0
<5.0
Chloroform (ug/L)
0.19
<1.0
<1.0
<1.0
<1.0
<1.0
<1.0
6.0
<1.0
<1.0
<1.0
7.5
3.5
4.4
<1.0
<5.0
<1.0
<1.0
<1.0
Chloromethane (ug/L)
none
<1.0
<1.0
<1.0
<1.0
<1.0
<1.0
<1.0
<1.0
<1.0
<1.0
<5.0
<1.0
<1.0
<1.0
<5.0
<1.0
<1.0
<1.0
Carbon Tetrachloride (ug/L)
0.3
<1.0
<1.0
<1.0
<1.0
<1.0
<1.0
<1.0
<1.0
<1.0
<1.0
<5.0
8.2
12.4
<1.0
<5.0
<1.0
<1.0
<1.0
1,1-Dichloroethane (ug/L)
700
<1.0
<1.0
<1.0
<1.0
<1.0
<1.0
<1.0
<1.0
<1.0
<1.0
<5.0
<1.0
<1.0
<1.0
<5.0
<1.0
<1.0
<1.0
1,2-Dichloroethane (ug/L)
0.38
<1.0
<1.0
<1.0
<1.0
<1.0
<1.0
<1.0
8A
14.6
<1.0
<5.0
2.8
<1.0
<1.0
<5.0
<1.0
<1.0
<1.0
Vinyl chloride (ug/L)
0.015
1.1
<1.0
<1.0
1.3
<1.0
<1.0
<1.0
3.6
6.4
<1.0
<5.0
<1.0
<1.0
<1.0
<5.0
<1.0
<1.0
<1.0
1,1-Dichloroethene (ug/L)
7.0
<1.0
<1.0
<1.0
<1.0
<1.0
<1.0
<1.0
3.5
4.8
<1.0
<5.0
<1.0
<1.0
<1.0
<5.0
<1.0
<1.0
<1.0
cis-1,2-Dichloroethene (ug/L)
70
3.1
<1.0
<1.0
2.7
3.9
<1.0
1,520
3,440
4,390
2200
24.5
6.8
22.5
<1.0
<5.0 i
10.4
9.6
<1.0
trans-1,2-Dichloroethene (ug/L)
70
<1.0
<1.0
<1.0
<1.0
<1.0
<1.0
24.0
16.9
18.9
<1.0
<5.0
<1.0
<1.0
<1.0
<5.0
<1.0
<1.0
<1.0
1,2-Dichloropropane (ug/L)
0.56
<1.0
<1.0
<1.0
<1.0
<1.0
<1.0
28.0
28.6
<1.0
<1.0
<5.0
<1.0
<1.0
<1.0
<5.0
<1.0
<1.0
<1.0
Ethylbenzene (ug/L)
29
<1.0
<1.0
NA
<1.0
<1.0
NA
NA
<1.0
<1.0
NA
NA
<1.0
<1.0
NA
NA
<1.0
<1.0
NA
Trichloroethene (ug/L)
2.8
84.5
13.3
93
71.7
110
164
<1.0
355
390
300
<5.0
505
678
865
<5.0
90
85
68
Tetrachloroethene (ug/L)
0.7
304
83.7
252
398
995
688
60.7
60
395
270
254
329
525
421
580
562
799
474
Toluene (ug/L)
1,000
<1.0
<1.0
NA
<1.0
<1.0
NA
NA
<1.0
<1.0
NA
NA
<1.0
<1.0
NA
NA
<1.0
<1.0
NA
1, 1, 1 -Trichloroethane (ug/L)
200
<1.0
<1.0
<1.0
<1.0
<1.0
<1.0
<1.0
<1.0
<1.0
<1.0
<5.0
<1.0
<1.0
<1.0
<5.0
<1.0
<1.0
<1.0
1,1,2-Trichloroethane (ug/L)
none
<1.0
<1.0
<1.0
<1.0
<1.0
<1.0
<1.0
<1.0
<1.0
<1.0
<5.0
<1.0
<1.0
<1.0
<5.0
<1.0
<1.0
<1.0
X lenes, Total ug/L
530
<2.0
1 <2.0
1 NA
1 <2.0
<2.0
NA
I NA
1 <2.0
1 <2.0
NA
NA
<2.0
<2.0
NA
NA I
<2.0
<2.0
NA
TotaIVOCs ug/L
393
1 97
1 345
1 474
1 1,109
1 852
1 1,639
1 3,931
1 5,239
2,770
286
855
1,242
1 1,286
1 580 ol
662
894
542
Sample Location:
DMP-4
BMW-1
BMW-2
BMW
BMW-4
Sample Date:
1/21/99 B
10/25/99 B
3/21/00 B
9/13/00 B
10/28/99 B
3/23/00 B
9/8/00 B
10/18/00 B
10/28/99 B
3/23/00 B
9/7/00 B
10/18/00 B
10/26/99 B
3/21/00 B
9/12/00 B"
10/25/99 B
3/21/00 B
9/13/00 B
Analysis Method:
EPA 601
EPA 601
EPA 601
EPA 601
EPA 601
EPA 601
EPA 601/60
EPA 601/60
EPA 601
EPA 601
EPA 601/60
JEPA 601160
EPA 601
EPA 601
EPA 601 ,;
EPA 601
EPA 601
EPA 601
Analyte
NCAC 2L
Benzene (ug/L)
1.0
NA
<1.0
<1.0
NA
NS-DRY
<1.0
<20.0
<20.0
<500
<1.0
<1,000
<1,000
<10.0
<1.0
NA
<1.0
<1.0
NA
Bromoform (ug/L)
0.19
<10.0
<1.0
<1.0
<1.0
NS-DRY
<1.0
<20.0
<20.0
<500
<1.0
<1,000
<1,000
<10.0
<1.0
<1.0
<1.0
<1.0
<1.0
1,2-Dichlorobenzene (ug/L)
none
<10.0
<1.0
<1.0
<1.0
NS-DRY
<1.0
<20.0
<20.0
<500
<1.0
<1,000
<1,000
<10.0
<1.0
<1.0
<1.0
<1.0
<1.0
1.3-Dichlorobenzene (ug/L)
none
<10.0
<1.0
<1.0
<1.0
NS-DRY
<1.0
<20.0
<20.0
<500
<1.0
<1,000
<1,000
<10.0
<1.0
<1.0
<1.0
<1.0
<1.0
Methylene Chloride (ug/L)
5.0
<50.0
<5.0
<5.0
<5.0
NS-DRY
<5.0
<100
<100
<2500
<5.0
<5,000
<5,000
<50.0
<5.0
<5.0
<5.0
<5.0
<5.0
Chloroform (ug/L)
0.19
<10.0
5.7
3.0
<1.0
NS-DRY
<1.0
<20.0
<20.0
<500
<1.0
<1,000
<1,000
<10.0
<1.0
<1.0
<1.0
<1.0
<1.0
Chloromethane (ug/L)
none
<10.0
<1.0
<1.0
<1.0
NS-DRY
<1.0
<20.0
<20.0
<500
<1.0
<1,000
<1,000
<10.0
<1.0
<1.0
<1.0
<1.0
<1.0
Carbon Tetrachloride (ug/L)
0.3
<10.0
17.1
27.1
<1.0
NS-DRY
<1.0
<20.0
<20.0
<500
<1.0
<1,000
<1,000
<10.0
<1.0
<1.0
<1.0
<1.0
<1.0
1, 1 -Dichloroethane (ug/L)
700
<10.0
<1.0
<1.0
<1.0
NS-DRY
<1.0
<20.0
<20.0
<500
<1.0
<1,000
<1,000
<10.0
<1.0
<1.0
<1.0
<1.0
<1.0
1,2-Dichloroethane (ug/L)
0.38
<10.0
1.0
<1.0
<1.0
NS-DRY
<1.0
<20.0
<20.0
<500
<1.0
<1,000
<1,000
<10.0
<1.0
<1.0
<1.0
<1.0
<1.0
Vinyl chloride (ug/L)
0.015
<10.0
<1.0
<1.0
<1.0
NS-DRY
<1.0
<20.0
<20.0
<500
<1.0
<1,000
<1,000
<10.0
<1.0
<1.0
<1.0
<1.0
<1.0
1, 1 -Dichloroethene (ug/L)
7.0
<10.0
1.2
<1.0
<1.0
NS-DRY
<1.0
<20.0
<20.0
<500
19.7
<1,000
<1,000
<10.0
<1.0
<1.0 -
<1.0
<1.0
<1.0
cis-1,2-Dichloroethene (ug/L)
70
259
275
280
460
NS-DRY
<1.0
<20.0
<20.0
<500
<1.0
<1,000
<1,000
<10.0
<1.0
<1.0
<1.0
<1.0
<1.0
trans-1,2-Dichloroethene (ug/L)
70
<10.0
2.8
31.2
<1.0
NS-DRY
4.0
<20.0
<20.0
<500
4.9
<1,000
<1,000
<10.0
<1.0
<1.0
5.5
<1.0
<1.0
1,2-Dichloropropane (ug/L)
0.56
<10.0
<1.0
<1.0
<1.0
NS-DRY
<1.0
<20.0
<20.0
<500
<1.0
<1,000
<1,000
18
11.1
<1.0
<1.0
<1.0
<1.0
Ethylbenzene (ug/L)
29
NA
<1.0
<1.0
NA
NS-DRY
<1.0
<20.0
<20.0
<500
<1.0
<1,000
<1,000
<10.0
<1.0
NA
<1.0
<1.0
NA
Trichloroethene (ug/L)
2.8
<10.0
1,180
1,080
1,340
NS-DRY
39.9
52
28
<500
70.1
<1,000
<1,000
<10.0
3.2
<1.0
118
8.1
84
Tetrachloroethene (ug/L)
0.7
3460
4,500
5,600
4,090
NS-DRY
1,670
802
380
48,800
110,000
45,700
53,500
260
448
278
607
98.4
244
Toluene (ug/L)
1,000
NA
<1.0
<1.0
NA
NS-DRY
<1.0
<20.0
<20.0
<500
3
<1,000
<1,000
<10.0
4
NA
<1.0
<1.0
NA
1,1,1-Trichloroethane (ug/L)
200
<10.0
<1.0
<1.0
<1.0
NS-DRY
<1.0
<20.0
<20.0
<500
4.1
<1,000
<1,000
<10.0
<1.0
<1.0
<1.0
<1.0
<1.0
1,1,2-Trichloroethane (ug/L)
none
<10.0
<1.0
<1.0
<1.0
NS-DRY
<1.0
<20.0
<20.0
<500
<1.0
<1,000
<1,000
<10.0
<1.0
<1.0
<1.0
<1.0
<1.0
X lenes, Total ug/L
530
NA
<2.0
<2.0
NA
NS-DRY
<2.0
<40.0
<40.0
<1,000
1.1
<2,000
<2,00
1 <20.0
1 <2.0
NA
<2.0
<Z.0
NA
Total VOCs ug/L
3,719
5,983
7,021
5,890
0
1,714
1 854
408
1 48,800
110.103
45,700
53,500
2-78---F
466
278
1 731
107
328
Notes: Compounds Compounds detected above the North Carolina 2L Standard are shown in bold.
A - indicates A - indicates samples collected by Mortensen Engineering, Inc.
B - indicates B - indicates samples collected by IT Corporation of North Carolina, Inc. formerly Fluor Daniel GTI, Inc.
NA = denote NA = denotes compound not analyzed
NS = indicat NS = indicates not sampled
Deep monito Deep monitoring wells DW-6, DW-9, DW-10 and DW-11 were destroyed during site construction activities.
deep gw summary 3 of 4 Revised 1216/00

7
TABLE 8
Historical Groundwater Analysis Data Summary - Deep Wells
W. P. Ballard and Downgradient Properties
Greensboro, North Carolina
Sample Location:
PT-1D
PT-2D
PT3D
8/29/97 B
3/23/00 B
9/8/00 B
8/29/97 B
3123/00 B
9/8/00 B
8129197 B
3123100 B
9/9/00 B
Sample Date:
Analysis Method:
EPA 8260A
EPA 601/60
EPA 601
EPA 8260A
EPA 601/60
EPA 601/60
EPA 8260A
EPA 601/60
EPA 601
Analyte
NCAC 2L
Benzene (ug/L)
1.0
7.8
<1.0
NA
<25
<1.0
<100
<25
<1.0
NA
Bromoform (ug/L)
0.19
<5.0
<1.0
<100
<25
<1.0
<100
<25
<1.0
<100
1,2-Dichlorobenzene (ug/L)
none
<10
<1.0
<100
<50
<1.0
<100
<50
<1.0
<100
1.3-Dichlorobenzene (ug/L)
none
<10
<1.0
<100
<50
<1.0
<100
<50
<1.0
<100
Methylene Chloride (ug/L)
5.0
<5
<5.0
<500
<25
<5.0
<500
<25
<5.0
<500
Chloroform (ug/L)
0.19
7.6
1.7
<100
<25
<1.0
<100
26
26.5
<100
Chloromethane (ug/L)
none
<10
<1.0
<100
<50
<1.0
<100
<25
<1.0
<100
Carbon Tetrachloride (ug/L)
0.3
<5.0
4.4
<100
<25
1.8
<100
82
149
<100
1, 1 -Dichloroethane (ug/L)
700
<5.0
<1.0
<100
<25
<1.0
<100
<25
<1.0
<100
1,2-Dichloroethane (ug/L)
0.38
<5.0
<1.0
<100
<25
<1.0
<100
<25
<1.0
<100
Vinyl chloride (ug/L)
0.015
<10
<1.0
<100
<50
<1.0
<100
<50
<1.0
<100
1,1-Dichloroethene (ug/L)
7.0
5A
<1.0
<100
<25
<1.0
<100
<25
<1.0
<100
cis-1,2-Dichloroethene (ug/L)
70
3,900
1.4
<100
<25
<1.0
<100
<25
21.6
<100
trans-1,2-Dichloroethene(ug/L)
70
<5.0
<1.0
<100
<25
<1.0
<100
<25
<1.0
<100
1,2-Dichloropropane (ug/L)
0.56
<5.0
<1.0
<100
<25
<1.0
<100
<25
<1.0
<100
Ethylbenzene (ug/L)
29
<5.0
<1.0
NA
<25
<1.0
<100
<25
<1.0
NA
Trichloroethene (ug/L)
2.8
36
1,950
210
<25
25
<100
4,800
5,200
6,390
Tetrachloroethene (ug/L)
0.7
1,900
5,800
3,510
440
5,510
2,440
230
500
140
Toluene (ug/L)
1,000
5.8
<1.0
NA
<25
<1.0
<100
<25
<1.0
NA
1,1,1-Trichloroethane (ug/L)
200
<5.0
<1.0
<100
<25
<1.0
<100
<25
<1.0
<100
1,1,2-Trichloroethane (ug/L)
none
<5.0
1.2
<100
<25
1.8
<100
<25
<1.0
<100
X lenes, Total ug/L
530
<5.0
1 <2.0
1 NA
1 <25
1 <2.0
1 <200
1 <25
1 <2.0
NA
Total VOCs ug/L
5,863
1 7,759
1 3,720
1 440
1 5,539
1 2,440
1 5,138
1 5,897
6,530
Sample Location: PT-4D
PT-5D
8/29/97 B
3/23/00 B
9/8/00 B
Sample Date: 8/29/97 B 3/23/00 B 9/9/00 B
Analysis Method: EPA 8260A EPA 601/60 EPA 601
EPA 8260A
EPA 601160
EPA 601/602
Analyte
NCAC 2L
Benzene (ug/L)
1.0 <500
<1.0
NA
<500
150
800
Bromoform (ug/L)
0.19 <500
<1.0
<500
<500
<1.0
<500
1,2-Dichlorobenzene (ug/L)
none <1,000
<1.0
<500
<1,000
<1.0
<500
1.3-Dichlorobenzene (ug/L)
none <1,000
<1.0
<500
<1,000
<1.0
<500
Methylene Chloride (ug/L)
5.0 <500
<5.0
<500
<500
<5.0
<2,500
Chloroform (ug/L)
0.19 <500
11.1
<500
<500
2.3
<500
Chloromethane (ug/L)
none <1,000
<1.0
<500
<1,000
<1.0
<500
Carbon Tetrachloride (ug/L)
0.3 <500
15
<500
<500
<1.0
<500
1, 1 -Dichloroethane (ug/L)
700 <500
<1.0
<500
<500
<1.0
<500
1,2-Dichloroethane (ug/L)
0.38 <500
<1.0
<500
<500
27.5
<500
Vinyl chloride (ug/L)
0.015 <1,000
<1.0
<500
<1,000
<1.0
<500
1,1-Dichloroethene (ug/L)
7.0 <500
3.8
<500
<500
<1.0
<500
cis-1,2-Dichloroethene (ug/L)
70 1,100
1,750
1,150
<500
25.2
<500
trans-1,2-Dichloroethene (ug/L)
70 <500
11.4
<500
<500
<1.0
<500
1,2-Dichloropropane (ug/L)
0.56 <500
<1.0
<500
<500
<1.0
<500
Ethylbenzene (ug/L)
29 <500
<1.0
NA
<500
7.6
<500
Trichloroethene (ug/L)
2.8 9,200
16,400
15,400
<500
68
<500
Tetrachloroethene (ug/L)
0.7 930
2,150
1,350
17,000
37,000
18,300
Toluene (ug/L)
1.000 <500
<1.0
NA
<500
410
600
1, 1. 1 -Trichloroethane (ug/L)
200 <500
<1.0
<500
<500
<1.0
<500
1,12-Trichloroethane (ug/L)
none <500
2.2
<500
<500
16.6
<500
X lenes, Total ug/L
530 <500
1 <2.0
1 NA
1 <500
1 90.5
1 <1,000
Total VOCs ug/L
11,230
1 20,344
1 17,900
1 17,000
1 37,798
19,700
Notes: Compounds Compounds detected above the North Carolina 2L Standard are shown in bold.
A - indicates A - indicates samples collected by Mortensen Engineering, Inc.
B - indicates B - indicates samples collected by IT Corporation of North Carolina, Inc. formerly Fluor Daniel GTI, Inc.
NA = denote NA = denotes compound not analyzed
NS = indicat NS = indicates not sampled
Deep monito Deep monitoring wells DW-6, DW-9, DW-10 and DW-11 were destroyed during site construction activities.
deep g,v summery 4 of 4 Revised 12/6/00

Table 9
Summary of High Vacuum Dual Phase Extraction Well Groundwater Analytical Results
W.P. Ballard and Downgradient Properties
Greensboro, North Carolina
Sample Location:
HVDP-1
HVDP-2
HVDP-3
HVDP4
HVDP-5
HVDP-6
HVDP-7
HVDP-8
HVDP-9
HVDP-10
HVDP-11
HVDP-12
HVDP-13 (EW-3)
HVDP-14 (EW-1)
9/7/00
9/7/00
9/14100
9/8/00
9/8/00
9/8/00
9/7/00
9/7100
9/7/00
9/8/00
9/9/00
9/8/00
8/29/97
9/17/97
3/25/00
9/8/00
8/29/97
9/17/97
3/23/00
9/9/00
Sample Date:
Analyte
NCAC 2L
Acetone (ug/L)
700
NA
NA
NA
NA
NA
NA
NA
NA
NA
NA
NA
NA
<20.0
NA
NA
NA
<2000
NA
NA
NA
Benzene (ug/L)
1.0
NA
NA
NA
NA
NA
NA
NA
NA
NA
NA
NA
NA
<5.0
NA
7.6
<500
<500
NA
<1.0
<5.0
Ethylbenzene (ug/L)
29
NA
NA
NA
NA
NA
NA
NA
NA
NA
NA
NA
NA
<5.0
NA
<1.0
<500
<500
NA
<1.0
<5.0
Methylene Chloride (ug/L)
5.0
<100
<5.0
<50.0
<250
<5.0
<25,000
<5,000
<5,000
<1,000
<50.0
<250
<1000
<5.0
<1,000
<5.0
<2,500
<500
<500
<5.0
<25
Chloroform (ug/L)
0.19
<20.0
<1.0
<10.0
<50.0
<1.0
<5,000
<1,000
<1,000
<200
<10.0
<50.0
<200
<5.0
<1,000
20.4
<500
<500
<500
20.4
<5.0
Chloromethane (ug/L)
none
<20.0
<1.0
<10.0
<50.0
<1.0
<5,000
<1,000
<1,000
<200
<10.0
<50.0
<200
<10.0
<2,000
<1.0
<500
<1,000
<1,000
<1.0
<5.0
Carbon Tetrachloride (ug/L)
0.3
<20.0
<1.0
<10.0
<50.0
<1.0
<5,000
<1,000
<1,000
<200
<10.0
<50.0
<200
<5.0
<1,000
37.4
<500
<500
<500
37.4
<5.0
1,1-Dichloroethane (ug/L)
700
<20.0
<1.0
<10.0
<50.0
<1.0
<5,000
<1,000
<1,000
<200
<10.0
<50.0
<200
<5.0
<1,000
<1.0
<500
<500
<500
<1.0
<5.0
1,2-Dichloroethane (ug/L)
0.38
<20.0
<1.0
<10.0
<50.0
<1.0
<5,000
<1,000
<1,000
<200
<10.0
<50.0
300
5.3
<1,000
5
<500
<500
<500
<1.0
<5.0
1, 1 -Dichloroethene (ug/L)
7.0
<20.0
<1.0
<10.0
<50.0
1.1
<5,000
<1,000
<1,000
<200
<10.0
<50.0
<200
<5.0
<1,000
<1.0
<500
<500
<500
<1.0
<5.0
cis- 1,2-Dichloroethene (ug/L)
70
<20.0
<1.0
<10.0
<50.0
28.5
<5,000
<1,000
<1,000
<200
43
140
<200
<5.0
NA
3.2
<500
<500
NA
15.5
<5.0
trans- 1,2-Dichloroethene (ug/L)
70
<20.0
<1.0
<10.0
<50.0
<1.0
<5,000
<1,000
<1,000
<200
<10.0
<50.0
<200
<5.0
<1,000
<1.0
<500
<500
<500
<1.0
<5.0
1,2-Dichloropropane (ug/L)
0.56
<20.0
<1.0
<10.0
<50.0
<1.0
<5,000
<1,000
<1,000
<200
<10.0
<50.0
<200
<5.0
<1,000
<1.0
<500
<500
<500
<1.0
<5.0
Trichloroethene (ug/L)
2.8
<20.0
<1.0
<10.0
<50.0
46.3
<5,000
<1,000
<1,000
<200
474
5,600
<200
28
<1,000
57
<500
6,500
6,300
3,630
150
Tetrachloroethene (ug/L)
0.7
922
30
169
2,480
21.2
96,500
41,800
38,400
11,600
31
430
7,640
15,000
11,000
20,000
16,700
930
1,500
440
180
1,1,2,2 Tetrachloroethane (ug/L)
none
<20.0
<1.0
<10.0
<50.0
<1.0
<5,000
<1,000
<1,000
<200
<10.0
<50.0
<200
19
<1,000
<1.0
<500
<500
<500
<1.0
<5.0
1, 1, 1 -Trichloroethane (ug/L)
200
<20.0
<1.0
<10.0
<50.0
<1.0
<5,000
<1,000
<1,000
<200
<10.0
<50.0
<200
<5.0
<1,000
<1.0
<500
<500
<500
<1.0
<5.0
1, 1, 2-Trichloroethane (ug/L)
none
<20.0
<1.0
<10.0
<50.0
<1.0
<5,000
<1,000
<1,000
<200
<10.0
<50.0
<200
13
<1,000
7
<500
<500
<500
<1.0
<5.0
Methyl tert-Butyl Ether - MTBE (ug/1)
200
NA
NA
NA
NA
NA
NA
NA
NA
NA
NA
NA
NA
<5.0
NA
<1.0
NA
<500
<500
<1.0
NA
Xylenes, Total (ug/L)
530
NA
NA
NA
NA
NA
NA
NA
NA
NA
NA
NA
NA
<5.0
NA
1 1
1 <1,000
1 <500
1 NA
<2.0
<10.0
Total VOCs (ug/L)',
922
30
169
2,480
97
96,500
41,800
38,400
11,600
548
6,170
7,940
15,065
11,000
20,139
16,700
7,430
7,800
4,143
330
Sample Location:
�VDIPA5
HVDP-16
HVDP-17
HVDP-18
HVDP-19
HVDP-20
HVDP-21
HVDP-22
HVDP-23
HVDP-24
HVDP-25
HVDP-26
HVDP-27
HVDP-28
HVDP-29
9/11/00
9/11/00
9/11/00
9/11/00
9/11/00
9/11/00
9/11/00
9/11/00
9/11/00
9/11/00
9/12/00
9/12/00
9/12/00
9/12/00
Sample Date:9/9/00
Analyte
NCAC 2L
Acetone (ug/L)
700
NA
NA
NA
NA
NA
NA
NA
NA
NA
NA
NA
NA
NA
NA
NA
Benzene
1.0
NA
NA
NA
NA
NA
NA
NA
NA
NA
NA
NA
NA
NA
NA
NA
Ethylbenzene
29
NA
NA
NA
NA
NA
NA
NA
NA
NA
NA
NA
NA
NA
NA
NA
Methylene Chloride (ug/L)
5.0
<5000
<250
<5.0
<250
<250
<250
<250
<250
<250
<50.0
<5.0
<5.0
<250
<5.0
<5.0
Chloroform (ug/L)
0.19
<1000
<50.0
<1.0
<50.0
<50.0
<50.0
<50.0
<50.0
<50.0
<10.0
3.2
<1.0
<50.0
<1.0
<1.0
Chloromethane (ug/L)
none
<1000
<50.0
<1.0
<50.0
<50.0
<50.0
<50.0
<50.0
<50.0
<10.0
<1.0
<1.0
<50.0
<1.0
<1.0
Carbon Tetrachloride (ug/L)
0.3
<1000
<50.0
<1.0
<50.0
<50.0
<50.0
<50.0
<50.0
<50.0
<10.0
7.5
<1.0
<50.0
<1.0
<1.0
1,1-Dichloroethane (ug/L)
700
<1000
<50.0
<1.0
<50.0
<50.0
<50.0
<50.0
<50.0
<50.0
<10.0
<1.0
<1.0
<50.0
<1.0
<1.0
1,2-Dichloroethane (ug/L)
0.38
<1000
<50.0
<1.0
<50.0
<50.0
<50.0
<50.0
<50.0
<50.0
<10.0
5.1
<1.0
<50.0
<1.0
4.8
1, 1 -Dichloroethene (ug/L)
7.0
<1000
<50.0
<1.0
<50.0
<50.0
<50.0
<50.0
<50.0
<50.0
<10.0
1.2
<1.0
<50.0
<1.0
<1.0
cis- 1,2-Dichloroethene (ug/L)
70
<1000
2,280
<1.0
95
475
<50.0
1,090
225
50.0
<10.0
14.5
<1.0
1,200
22
<1.0
trans- 1,2-Dichloroethene (ug/L)
70
<1000
<50.0
<1.0
<50.0
<50.0
<50.0
<50.0
<50.0
<50.0
<10.0
<1.0
<1.0
<50.0
<1.0
<1.0
1,2-Dichloropropane (ug/L)
0.56
<1000
<1000
<1.0
<50.0
<50.0
<50.0
<50.0
<50.0
<50.0
<10.0
<1.0
<1.0
<50.0
<1.0
<1.0
Trichloroethene (ug/L)
2.8
42,600
78,100
68.5
2,640
325
<50.0
<50.0
1,120
3,500
146
42.9
<1.0
1,660
41.2
<1.0
Tetrachloroethene (ug/L)
0.7
1,000
<1000
34
2,870
540
1,860
605
2,880
1,140
266
3.6
<1.0
2,520
55.2
2.5
1,1,2,2 Tetrachloroethane (ug/L)
none
<1000
<50.0
<1.0
<50.0
<50.0
<50.0
<50.0
<50.0
<50.0
<10.0
<1.0
<1.0
<50.0
<1.0
<1.0
1,1,1-Trichloroethane (ug/L)
200
<1000
<50.0
<1.0
<50.0
<50.0
<50.0
<50.0
<50.0
<50.0
<10.0
<1.0
<1.0
<50.0
<1.0
<1.0
1,1,2-Trichloroethane (ug/L)
none
<1000
<50.0
<1.0
<50.0
<50.0
<50.0
<50.0
<50.0
<50.0
<10.0
<1.0
<1.0
<50.0
<1.0
<1.0
Methyl tert-butyl ether (MTBE) (ug/1)
200
NA
NA
NA
NA
NA
NA
NA
NA
NA
NA
NA
NA
NA
NA
NA
Xylenes, Total (ug/L)
530
NA
NA
NA
NA
I NA
NA
NA
NA
NA
NA
NA
NA
NA
I NA
NA
Total VOCs (ug/L)
_
43,600
80,380
103
5,605
1,340
1,860
1,695
4,225
4,690
412
78
0
5,380
118
7
Remedial Well GW Malytical.xls Page 1 of 1 Revised: 12/5/00

Table 10
Summary of Soil Vapor Extraction Well Groundwater Analytical Results
W.P. Ballard and Downgradient Properties
Greensboro, North Carolina
Sample Location:
SVE-1
SVE-2
SVE-3
SVE-4
SVE-5
SVE 6
SVE-7
SVE-8 (EW-4)
917/00
9/7/00
9/7/00
9/7/00
917/00
9/8/00
917/00
8/29/97
9/17/97
3/23/00
9/8100
Sample Date:
Analyte
NCAC 2L
Acetone (ug/L)
700
NA
NA
NA
NA
NA
NA
NA
23
NA
NA
NA
Benzene (ug/L)
1.0
NA
NA
NA
NA
NA
NA
NA
690
NA
370
<500
Ethylbenzene (ug/L)
29
NA
NA
NA
NA
NA
NA
NA
33
NA
23.6
<500
Methylene Chloride (ug/L)
5.0
<5.0
<2,500
<25,000
<25,000
<25,000
<2,500
<500
5
<1,000
<5.0
<2,500
Chloroform (ug/L)
0.19
<1.0
<500
<5,000
<5,000
<5,000
<500
<100
10
<1,000
9.3
<500
Chloromethane (ug/L)
none
<1.0
<500
<5,000
<5,000
<5,000
<500
<100
<5.0
<2,000
<1.0
<500
Carbon Tetrachloride (ug/L)
0.3
<1.0
<500
<5,000
<5,000
<5,000
<500
<100
<5.0
<1,000
<1.0
<500
1,2-Dibromoethane (ug/L)
none
NA
NA
NA
NA
NA
NA
NA
35
NA
NA
NA
1, 1 -D ichloroethane (ug/L)
700
<1.0
<500
<5,000
<5,000
<5,000
<500
<100
<5.0
<1,000
<1.0
<500
1,2-Dichloroethane (ug/L)
0.38
<1.0
<500
<5,000
<5,000
<5,000
<500
<100
<5.0
<1,000
61.6
<500
1,1-Dichloroethene(ug/L)
7.0
<1.0
<500
<5,000
<5,000
<5,000
<500
<100
<5.0
<1,000
<1.0
<500
cis-1,2-Dichloroethene (ug/L)
70
7.5
1,850
<5,000
<5,000
<5,000
<500
<100
46
NA
30.6
<500
trans-1,2-Dichloroethene (ug/L)
70
<1.0
<500
<5,000
<5,000
<5,000
<500
<100
<5.0
<1,000
<1.0
<500
1,2-Dichloropropane (ug/L)
0.56
<1.0
<500
<5,000
<5,000
<5,000
<500
<100
<5.0
<1,000
<1.0
<500
Trichloroethene (ug/L)
2.8
17.4
<500
<5,000
<5,000
<5,000
<500
<100
62
<1,000
65.9
<500
Tetrachloroethene (ug/L)
0.7
2,760
3,700
65,000
126,000
130,000
20,600
5,310
42,000
30,000
57,500
13,200
1, 1,2,2-Tetrachloroethene (ug/L)
none
<1.0
<500
<5,000
<5,000
<5,000
<500
<100
90
<1,000
3A
<500
Toluene (ug/L)
1,000
NA
NA
NA
NA
NA
NA
NA
670
NA
710
<500
1,1,1-Trichloroethane(ug/L)
200
<1.0
<500
<5,000
<5,000
<5,000
<500
<100
<5.0
<1,000
<1.0
<500
1,1,2-Trichloroethane (ug/L)
none
<1.0
<500
<5,000
<5,000
<5,000
<500
<100
120
<1,000
60.2
<500
1,3,5-Trimethylbenzene (ug/L)
none
NA
NA
NA
NA
NA
NA
NA
38
NA
<1.0
NA
1,2,4-Trimethylbenzene (ug/L)
none
NA
NA
NA
NA
NA
NA
NA
38
NA
<1.0
NA
Xylenes, Total (ug/L)
530
NA
NA
NA
NA
NA
NA
NA
410
NA
<1.0
NA
Total VOCs (ug/L)
1;:,
2,785
5,550
65,000
126,000
130,000
20,600
5,310
44,270
30,000
58,834
13,200
Sample Location:
SVE-9 (EW-2)
SVE-10
SVE-11
SVE-12
SVE-13
8/29/97
9/17/97
3/23/00
9/9/00
9/12/00
9112/00
9/12/00
9/12/00
Sample Date:
Analyte
NCAC 2L
Acetone (ug/L)
700
<20.0
NA
NA
NA
NA
NA
NA
NA
Benzene (ug/L)
1.0
<5.0
NA
<1.0
<50.0
NA
NA
NA
NA
Ethylbenzene (ug/L)
29
<5.0
NA
<1.0
<50.0
NA
NA
NA
NA
Methylene Chloride (ug/L)
5.0
<5.0
<1,000
<5.0
<250
<5,000
<5,000
<5,000
<25
Chloroform (ug/L)
0.19
6.9
<1,000
5.3
<50.0
<1,000
<1,000
<1,000
<5.0
Chloromethane (ug/L)
none
<10.0
<2,000
<1.0
<50.0
<1,000
<1,000
<1,000
<5.0
Carbon Tetrachloride (ug/L)
0.3
<5.0
<1,000
<1.0
<50.0
<1,000
<1,000
<1,000
<5.0
1,2-Dibromoethane (ug/L)
none
<5.0
NA
<1.0
NA
NA
NA
NA
NA
1,1-Dichloroethane (ug/L)
700
<5.0
<1,000
<1.0
<50.0
<1,000
<1,000
<1,000
<5.0
1,2-Dichloroethane (ug/L)
0.38
5.3
<1,000
10
<50.0
<1,000
<1,000
<1,000
<5.0
1,1-Dichloroethene (ug/L)
7.0
<5.0
<1,000
<1.0
<50.0
<1,000
<1,000
<1,000
<5.0
cis-1,2-Dichloroethene (ug/L)
70
11
NA
4
<50.0
4,600
13,200
12,200
140
trans-1,2-Dichloroethene (ug/L)
70
<5.0
<1,000
<1.0
<50.0
<1,000
<1,000
<1,000
<5.0
1,2-Dichloropropane(ug/L)
0.56
<5.0
<1,000
<1.0
<50.0
<1,000
<1,000
<1,000
<5.0
Trichloroethene (ug/L)
2.8
120
<1,000
185
<50.0
60,600
<1,000
12,800
<5.0
Tetrachloroethene (ug/L)
0.7
19,000
10,000
9,150
1,090
<1,000
<1,000
<1,000
<5.0
1,1,2,2-Tetrachloroethene (ug/L)
none
36
<1,000
<1.0
<50.0
<1,000
<1,000
<1,000
<5.0
Toluene (ug/L)
1,000
<5.0
NA
<1.0
NA
NA
NA
NA
NA
111,1-Trichloroethane(ug/L)
200
<5.0
<1,000
<1.0
<50.0
<1,000
<1,000
<1,000
<5.0
1, 1,2-Trichloroethane (ug/L)
none
28
<1,000
8.7
<50.0
<1,000
<1,000
<1,000
<5.0
1,3,5-Trimethylbenzene (ug/L)
none
<5.0
NA
NA
NA
NA
NA
NA
NA
1,2,4-Trimethylbenzene (ug/L)
none
<5.0
NA
NA
NA
NA
NA
NA
NA
Xylenes, Total (ug/L)
530 ji
<5.0
NA
<1.0
NA
NA
NA
NA
NA
Total VOCs (ug/L)
M a ?
19,207
10,000
9,363
1,090
65,200
13,200
25,000
140
Remedial Well GW MalyticalAs Page. 1 of 1 Revised: 1215/00