WI0400023_W/ Corrective Action_20011204

IT Corporation of North Carolina, Inc.
•
the�i�-oup
November 29, 2001
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: Corrective Action 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:
2200 Gateway Centre Boulevard. Suite 205
Morrisville, NC 27560-9129
Tel. [phone]
Fax. [phone]
A Member of The IT Group
-
On behalf of Sears Logistics Services, Inc. (SLS), we are hereby forwarding for your review a Monitoring
Report that presents the results of semiannual groundwater monitoring conducted at the subject site. in
August 2001. This monitoring event was performed as a follow-up to Phase I full scale in situ chemical
oxidation (ISCO) using sodium permanganate and the start-up of the High Vacuum Dual Phase (HVDP)
remediation system. Phase I of the full scale ISCO was performed in June and July 2001 and the HVDP
system was started up in March 2001. Analytical results summarized in this report will provide a baseline
database for the evaluation of the effectiveness of Phase II full scale permanganate injection, which -was
implemented at the site in October 2001. Follow up sampling of Phases I and 11 monitoring wells, is
scheduled to be performed in December 2001
We would like to thank NCDENR for the issuance on November 21, 2001 of the UIC permit for the
implementation of Phase III full scale ISCO. We would like to again respectfully request that NCDENR
review and approve the Corrective Action Plan (CAP) submitted on May 20, 1999.
As you know, Sears Logistics Services, Inc (SLS) is implementing a multi- technology approach to
remediate contamination caused by a release (or releases) of tetrachloroethylene from the W. P. Ballard
property. One aspect of the clean-up plan is to install and operate a HVDP extraction and soil vapor
extraction (HVDPE/SVE) remediation system to reduce contaminant mass while awaiting approval of the
UIC permit for ISCO with permanganate. A second aspect of the remedial action plan is to apply in situ
oxidation with permanganate to further reduce contaminant concentrations in groundwater and soil to
meet site clean-up goals.
Operation of the HVDP/SVE system began on March 1, 2001 and was suspended on September 27,
2001. The system was shut down in preparation for implementation of the Phase II Full Scale injection in
October to avoid pumping permanganate laden groundwater out of the subsurface where it is oxidizing
contaminants in situ and into the on -site water treatment system where it could foul treatment system
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IT CORPORATION
aarend� or zhe rrc„oup
CORRECTIVE ACTION/MONITORING REPORT
March 2001 Through October 2001
W. P. Ballard Property
2701 Branchwood Drive
Greensboro, Guilford County, North Carolina
NCDENR Groundwater Incident # 6953
IT Corporation of North Carolina Project # 107535
November 29, 2001
Prepared by.
IT Corporation of North Carolina, Inc.
2200 Gateway Center Drive, Suite 205
Morrisville, North Carolina 27560
[phone]
Volume I of II

IT Corporation ofNorfh Carolina, Inc.
A hfemher of The IT Croup
Monitoring Report Page 2 of 2
W.P. Ballard Property November 29 2001
components. It is not expected that the HVDP/SVE system will be restarted since the entire area where
the system was operating has now been injected with permanganate. The HVDP/SVE system will be
disassembled and demobilized from the site in the first quarter of 2002.
With the approval of the UIC permit for Phase III, IT Corporation is now proceeding with implementation of
the Phase III ISCO using permanganate. The first step of the Phase III implementation will include
excavation and removal of the source area "hot spot" soils from the site. The "hot spot' boundaries were
identified via the collection and analysis of Geoprobe soil samples in October and November 2001. An
infiltration gallery assembly, for the injection of sodium permanganate, will be installed at the base of the
excavation cavity. Injection into the infiltration gallery will target residual vadose zone contamination not
removed by excavation activities. Excavated soil materials will be treated on -site using a mobile thermal
treatment unit and then disposed of off -site at a permitted disposal facility. The source soil excavation,
treatment and off -site disposal is planned to be performed in December to 2001. The second step Hof the
Phase III full-scale ISCO program will include subsurface injection of permanganate using the Geoprobe
direct push method, which has been successfully implemented during the performance of Phases I & II.
This step will be performed in January and February 2002.
We look forward to working with the Department to proactively remediate 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 — Monitoring Report
cc: Melanie Wells — Guilford County Health Department
Mark Pritzl — UIC Permit Section
Tom Grandys — SLS
file
9�LG®
R. Keith Og en�SM
Senior Project Manager

{ IT Corporation ofNordi Carolina, Inc.
f j A A/ember of The /7' Croup
CORRECTIVE ACTION/MONITORING REPORT
W. P. Ballard Property
2701 Branchwood Drive
Greensboro, Guilford County, North Carolina
NCDENR Groundwater Incident # 6953
IT Corporation of North Carolina Project # 107535
November 29, 2001
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: 36.106 ° N and 79.82393° W
Prepared by: f eviewed by: .�`0�'(1� �ARO4No
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• 'lam
Hass R. Hamm Dale Egner, LG = ° SEAL o
1708 ;
Site Manager Project Geologist
OLOG.-'
F� ILIA RD
R. Keith Ogde P.E., RSM
Senior Project Manager
i

IT Corporation of North Carolina, Inc.
A Alembcr of The IT Croup
I
Corrective Action/Monitoring Report Page ii
W. P. Ballard and Downgradient Properties November 29, 2001
TABLE OF CONTENTS
EXECUTIVE SUMMARY....................................................................................................................... 1
1.0 INTRODUCTION......................................................................................................................... 3
1.1 BACKGROUND........................................................................................................................................ 3
1.2 REPORT OBJECTIVES.............................................................................................................................. 6
2.0 FIELDACTIVITIES ...................................................................................................................... 7
2.1 REMEDIAL ACTIVITIES........................................................................................................................... 7
2.1.1 Fixed Treatment Activities............................................................................................................. 7
2.1.2 Phase I In Situ Chemical Oxidation Activities............................................................................... 9
2.2 SOURCE AREA GEOPROBE SOIL SAMPLING.......................................................................................... 10
2.3 SEMIANNUAL MONITORING ACTIVITIES............................................................................................... 11
2.3.1 Well Gauging............................................................................................................................... 11
2.3.2 Field Monitoring.......................................................................................................................... 11
2.3.3 Groundwater Sample Collection.................................................................................................. 11
2.3.4 Soil Vapor Sample Collection...................................................................................................... 12
3.0 RESULTS..................................................................................................................................13
3.1
GROUNDWATER GAUGING RESULTS....................................................................................................
13
3.2
GROUNDWATER SAMPLING RESULTS...................................................................................................
13
3.2.1 Shallow Groundwater Sampling Results.....................................................................................
13
3.2.2 Deep Groundwater Sampling Results..........................................................................................
14
3.3
DUPLICATE GROUNDWATER SAMPLE RESULTS....................................................................................
15
3.4
SOIL SAMPLING RESULTS.....................................................................................................................
15
3.5
SOIL VAPOR SAMPLING RESULTS.........................................................................................................
16
3.6
PHASE I FULL SCALE ISCO RESULTS....................................................................................................
16
4.0 RESULTS EVALUATION......................................................................................................... 18
4.1 GROUNDWATER MONITORING DATA................................................................................................... 18
4.1.1 Shallow Groundwater Data......................................................................................................... 18
.4.1.2 Deep Groundwater Data............................................................................................................. 20
4.2 SOURCE AREA SOIL DATA.................................................................................................................... 21
4.3 SOIL VAPOR DATA............................................................................................................................... 22
5.0 REMEDIATION EFFECTIVENESS EVALUATION.................................................................. 23
5.1 IN SITU CHEMICAL OXIDATION USING SODIUM PERMANGANATE........................................................ 23
5.1.1 Pilot Injection Test....................................................................................................................... 23
5.1.2 Preliminary Phase I Full Scale Application Results.................................................................... 24
5.2 TOTAL FLUID RECOVERY AND TREATMENT SYSTEMS......................................................................... 25

IT Corporation of North Carolina, Inc.
A Member of The IT Croup
I
Corrective Action/Monitoring Report Page iii
W. P. Ballard and Downgradient Properties November 29, 2001
5.2.1 Groundwater Recovery Data....................................................................................................... 25
5.2.2 Vapor Phase Recovery Data........................................................................................................ 26
6.0 CONCLUSIONS........................................................................................................................28
7.0 RECOMMENDATIONS.............................................................................................................30
FIGURES
Figure 1 - Site Location Map
Figure 2 - Monitoring Well Locations — W. P. Ballard and Downgradient Properties
Figure 3 - W. P. Ballard and Axton -Cross Property Monitoring Well Locations
Figure 4 - Remediation System Wells
Figure 5 - ISCO Full Scale Application Phasing Plan
Figure 6 - ISCO Phase I Area and Injection Point Layout
Figure 7 - Geoprobe Soil Sample Location Map — July 10, 2001
Figure 8 - Groundwater Elevation Contours Shallow and Deep Monitoring Wells
Figure 9 - Total VOCs - Shallow Monitoring Wells - August 2001
Figure 10 - Total VOCs - Deep Monitoring Wells - August 2001
Figure 11 - Total VOCs Isoconcentration Map for Shallow Wells- March & August 2001
Figure 12 - Total VOCs Isoconcentration Map for Deep Wells- March & August 2001
Figure 13 - Pilot Test: Pre- & Post -injection Total VOCs - Shallow Monitoring Wells
Figure 14 - Pilot Test: Pre- & Post -injection Total VOCs - Deep Monitoring Wells
Figure 15 - Phase I ISCO: Pre- & Post -injection Total VOCs - Shallow Monitoring Wells
Figure 16 - Phase I ISCO: Pre- & Post -injection Total VOCs - Deep Monitoring Wells
TABLES
Table 1 - Well Construction Summary
Table 2 - Summary of Groundwater Gauging and Field Monitoring Data
Table 3 - August 2001 Groundwater Analytical Data Summary - Shallow Wells
Table 4 - Historic Groundwater Analytical Data Summary - Shallow Wells
-, Table 5 - August 2001 Groundwater Analytical Data Summary - Deep Wells
Table 6 - Historic Groundwater Analytical Data Summary - Deep Wells
Table 7 - Summary of Soil Analytical Results — July 10, 2001
Table 8 - Summary of Soil Vapor Monitoring Results — August 23, 2001
Table 9 - Summary of Historic Soil Vapor Monitoring Results
Table 10 - Phase I Full Scale ISCO Application — Injection Data Summary

IT Corporation of North Carolina, Inc.
A Alember of The IT Croup
Corrective Action/Monitoring Report Page iv
W. P. Ballard and Downgradient Properties November 29, 2001
Table 11 - Phase I Full Scale ISCO Application — Field Monitoring Data Summary
Table 12 - Pre- and Post -Injection Groundwater Data Summary- WP Ballard Property
Table 13 - Phase I In Situ Chemical Oxidation - Shallow Groundwater Wells Preliminary Results Summary
Table 14 - Phase I In Situ Chemical Oxidation - Deep Groundwater Wells Preliminary Results Summary
Table 15 - Cumulative Mass Removal Via Groundwater Extraction
Table 16 - NPDES Compliance Monitoring Summary
Table 17 - Cumulative Mass Removal Via Vapor Extraction
Table 18 - Off -Gas Effluent Air Permit Compliance Monitoring Summary
APPENDICES
Appendix A — Laboratory Analytical Data Reports — Groundwater Samples
Appendix B — Laboratory Analytical Data Reports - Source Area Soil Samples
Appendix C — Laboratory Analytical Data Reports - Soil Vapor Samples
Appendix D — Field Data Sheets - Phase I Full Scale ISCO Injection
Appendix E — Field Monitoring Data Sheets - Phase I Full Scale ISCO Injection
Appendix F — Field Monitoring Results Graphs - Phase I Full Scale ISCO Injection
Appendix G — Treatment System - Laboratory Analytical Data Reports

IT Corporation of Nordl Cnrofinr+, Inc.
A blember of The IT Group
Corrective Action/Monitoring Report Page 1
W. P. Ballard and Downgradient Properties November 29, 2001
EXECUTIVE SUMMARY
This monitoring report provides information on volatile organic compound levels in groundwater
samples collected in August 2001 at the W. P. Ballard site in Greensboro, North Carolina. These
samples were collected approximately six months after the startup of remedial activities using the high
vacuum dual phase (HVDP) in conjunction with soil vapor extraction (SVE) system (HVDP/SVE) and
six weeks after the completion of the full scale in situ chemical oxidation (ISCO) at the Phase I area,
which was conducted in June and July 2001. The Phase I full scale injection was conducted under the
conditions of North Carolina Department of Environment and Natural Resources (NCDENR) UIC
Permit No. W10400023 issued by NCDENR on April 2, 2001. During the Phase I full scale application,
Sodium Permanganate (NaMn04) was injected into the subsurface to oxidize chlorinated solvents,
specifically tetrachloroethene (PCE). Approximately 21,450 pounds of NaMn04 were injected in the
form of a 5% solution at 67 injection locations within the Phase I area. Over 2.2 million gallons of
contaminated groundwater have been recovered and treated by the HVDP system. Approximately 50
pounds of dissolved phase PCE and 25 pounds of dissolved phase TCE have been recovered by this
system. Additionally, over 313 pounds of vapor phase PCE and 64 pounds of total hydrocarbons
(THC) have been removed by the vapor extraction system, which utilized a combination of HVDP and
SVE treatment technologies. The August 2001 sampling results and other information discussed in
this report provide information that will be used as an operational baseline for the future evaluation of
the effectiveness of Phase II full scale ISCO, which was implemented at the site during October 2001.
Based on the results of the August 2001 monitoring event and data acquired during the operation of
the HVDP/SVE recovery and treatment system, the following conclusions are made:
• The vertical and horizontal extent of the groundwater VOC contamination at the site, as defined in the
December 1999 CSA, continues to be defined. Although the plume boundaries have not changed
significantly, the intensity of the leading edge of the plume have been reduced.
Total VOC concentrations in shallow and deep groundwater throughout the Phase I ISCO area have
been reduced. Reduction in shallow wells ranged from 16% to 71 % and from 9% to 100% in deep
wells. Since groundwater samples were taken soon after the Phase I injection, the results from the
August 2001 sampling event are considered preliminary. More reduction is anticipated to occur in the
Phase I area wells. The oxidation process, in previous events, by sodium permanganate has been
seen to occur over an extended period after the actual injection of the oxidant.
The decrease in total VOC concentration in deep groundwater wells was more pronounced than in
shallow wells. The use of the bottom up injection method during the Phase I full scale application is
thought to be the reason for this variation. The other reason is greater formation permeability at depth,
which allowed better dispersion of the oxidizer and subsequently more oxidizer was available for
reaction with VOCs in the deeper zone.
• The HVDP/SVE system was started in March 2001 and operated intermittently throughout the current
monitoring period. The system experienced several operational problems related to the thermal

IT Corporation of North Carolina, Inc.
A Afember of The IT Group
Monitoring Report Page 2
W. P. Ballard and Downgradient Properties November 29, 2001
oxidizer. A total of 50 pounds of PCE and 25 pounds of TCE were removed from the site via
groundwater extraction using the HVDP recovery wells. A total of 313 pounds of PCE, 2.7 pounds of
TCE, and 64.4 pounds of THC were removed from the site by the vapor extraction system (i.e.
HVDP/SVE).
• Rebound in total VOC concentrations was observed in several shallow and deep wells located at the
W. P. Ballard property (the primary source area). The observed rebound is suspected to be the result
of continued dissolution of PCE from DNAPL entrapped in the source area vadose zone.
• Total VOC concentrations continued to decrease in several shallow and deep wells located at the W.
P. Ballard property (the primary source area). The observed decrease is most likely a result of
operating source area SVE system wells.
• Total VOC concentrations at locations immediately downgradient of the source area (i.e. Axton -Cross
property) decreased at some locations (MW-27 for example) and increased at other locations (MW-10
for example). The observed change in the total VOC mass distribution can be attributed to the
operation of the HVDP/SVE recovery- system during the current monitoring period. At several
locations further downgradient of the Axton -Cross property (DW-5 and DMP-2), total VOC
concentrations increased. The observed increases may be as a result of TCE migrating from the
secondary source area previously identified on the Axton -Cross property.
• Geoprobe soil sampling data obtained from the source area vadose zone in July 2001 indicate. that
the bulk of the DNAPL contamination mass is still present in the source area soils. PCE contamination
in excess of 2.5 million µg/kg was detected in the sample collected at the former location of the PCE
AST. It is highly likely that the presence of the entrapped DNAPL in the source area vadose zone is
the primary cause for the continuing contamination of groundwater at the site.
• Soil vapor sampling data obtained in August 2001 from 12 soil vapor monitoring points located in the
source area indicate that VOC vapor phase concentration has been significantly diminished. The
observed decrease in vapor phase concentrations ranged from 84% to over 99%. Operation of the
SVE system during the past six months and overall decrease in source area contamination mass
following the implementation of the ISCO pilot test, are thought to be the primary reasons for the
observed decreases.
The following recommendations are made:
• NCDENR should approve the CAP that was submitted in May 1999.
• SLS should excavate and remove the source area "hot spot" from the site. The continued presence
of high vadose zone VOC concentrations at and near the former location of the PCE AST appear to
be impeding efforts to remediate source area and downgradient groundwater.
• For the Phase III area, SLS should implement the full-scale permanganate injection to expedite
reduction of VOC concentrations in source area groundwater and soils. The recommendations made
after completion of the Phase II ISCO, should be followed.
• SLS should suspend remedial efforts using the HVDP/SVE remediation system to allow for successful
implementation of the ISCO technology.

IT Corporation ofNorth Carolina, Inc -
it Member of The IT Croup
J Monitoring Report Page 3
W. P. Ballard and Downgradient Properties November 29, 2001
1.0 INTRODUCTION
This Report presents and discusses the following:
Groundwater analytical results for samples obtained from 38 site monitoring and treatment system
wells. These samples were collected during the second 2001 semi annual groundwater monitoring
event, which took place during the period from August 20 through August 23, 2001.
• Soil vapor analytical results for samples obtained from 11 soil vapor monitoring points (SVMP)
located at the source area of the site. These samples were collected on August 23, 2001.
• Soil sampling analytical results for soil samples obtained from the site source area during July
2001 using standard Geoprobe direct push method. These samples were collected from three
i locations on the W. P. Ballard Property at and near the former location of the PCE AST.
i
• Preliminary results of the Phase I full scale in situ chemical oxidation (ISCO) application
performed at the W. P. Ballard property located in Greensboro, North Carolina. The Phase I full
scale ISCO application was performed during the period from June 18 through July 11, 2001.
• Results from the high vacuum dual phase (HVDP) and soil vapor extraction (SVE) and treatment
systems for the operational period from March through September 2001. The HVDP/SVE system
was installed as part of the remedial strategy for the site.
1.1 Background
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 depicted
on a portion of the United States Geological Survey (USGS) 7.5-minute topographic map of Greensboro,
North Carolina Quadrangle, as shown in 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 that time, two 550-gallon USTs
used for the storage of heating oil and gasoline, were removed. The release was reported to have been
associated with the gasoline UST. The estimated quantity and cause of the release are unknown. The
NCDENR was notified of the release in September 1991. No other USTs are currently present at the site.
In April 1992, Mortensen Engineering, Inc. (Mortensen) installed six monitoring wells (MW-1 through MW-6)
at the site to assess the extent of the petroleum hydrocarbon contamination. Groundwater analytical results
for samples obtained from these wells revealed the presence of high concentrations of dissolved phase

IT Corporation of North Carolina, Inc.
A Afemher of The IT Croup
Monitoring Report Page 4
W. P. Ballard and Downgradient Properties November 29, 2001
chlorinated solvents. The chlorinated VOCs consisted mainly of tetrachloroethene (PCE) and its associated
breakdown products. Detected PCE groundwater concentrations ranged from 11 µgh (MW-5) to 270,000 µg/I
(MW-3). The chlorinated hydrocarbon release was attributed to PCE storage, handling, and distribution
activities, historically performed at the site. The actual quantity of PCE released 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 ceased dry cleaning supply operations.
In August 1999, the 6000-gallon AST used for the bulk storage of PCE was removed from the site.
Subsequent to the discovery of the chlorinated solvent release, Mortenson performed several assessments
between April 1992 and January 1997. A total of 38 monitoring wells were installed to determine the lateral
and vertical extent of the dissolved phase plume. The wells included twenty six (26) Type II, shallow
groundwater monitoring wells, installed to 35 feet bgs and twelve (12) Type III, deep monitoring wells; installed.
to depths ranging from 47 feet to 63.5 feet bgs.
In October 1998, IT Corporation of North Carolina, Inc. (formerly Fluor Daniel GTI) was retained to
prepare and implement a Corrective Action Plan (CAP) for the Ballard property and the adjacent property
formerly owned by Sears Logistics Services. In January 1999, IT Corporation installed twelve soil vapor
monitoring points (SVMP-1 through SVMP-12) to 12 feet bgs, two Type II (LMP-1 and LMP-2), and,four
Type III monitoring wells (DMP-1 through DMP-4) to similar depths as those previously installed by
Mortenson. A summary of well construction details is presented in Table 1. Site maps illustrating the
locations of all monitoring wells on the W. P. Ballard and Downgradient Properties and W. P. Ballard and
Axton -Cross properties are shown in Figures 2 and 3, respectively.
In September and October 1999, IT Corporation conducted a comprehensive site assessment (CSA)
investigation to delineate the extent of petroleum hydrocarbons in soil and groundwater at the site. As part
of the soil CSA, four Geoprobe borings were advanced to 20 feet bgs at the W. P. Ballard and the former
SLS properties. As part of the groundwater CSA, seven monitoring wells were installed to expand the
groundwater monitoring network in the intermediate (60 to 80 feet below ground surface (bgs)) and
deep/bedrock zones (100 to 150 feet bgs). Three of these wells are Type II monitoring wells (DW-13
through DW-15) were installed to a total depth of 65 feet bgs. The other four wells (BMW-1 through BMW-
4) are bedrock Type III monitoring wells were installed to delineate the vertical extent of the chlorinated
solvent plume. The findings of the CSA investigation were presented in a report, which was submitted
to the NCDENR on December 17, 1999. The CSA Report was approved by the NCDENR on April 9,
2001.

IT Corporation of Norih Cam&n, Inc.
A Afembet of The 17' Croup
Monitoring Report
W. P. Ballard and Downgradient Properties
Page 5
November 29, 2001
In early 1999, IT Corporation performed an evaluation of remedial alternatives for this site. Based on this
evaluation, a Corrective Action Plan (CAP) was prepared and submitted to the NCDENR in May 1999.
The CAP proposed a conceptual remedial approach, which was based on evaluation of remedial
alternatives and results of pilot and bench scale testing activities completed between 1997 and 1999. A.
multi -phase approach was proposed. The initial phase proposed, the implementation of comprehensive
in situ chemical oxidation via the application of sodium permanganate into the subsurface using direct
push Geoprobe technology. Permanganate (a strong oxidizing agent) is expected to rapidly oxidize and
transform chlorinated ethenes to innocuous breakdown products such as carbon dioxide, chloride ions,
and manganese -dioxide. This process is anticipated to significantly reduce adsorbed phase and dissolved
phase chlorinated ethylene concentrations in site's soil and groundwater.
A pilot injection test was performed at the site during April and May 2000. The pilot test was conducted
in two phases. The first phase,of the permanganate application was performed on the W. P. Ballard
property in the area located in the immediate vicinity of the former location of the tetrachloroethene AST.
The second phase of the pilot test was performed hydraulically downgradient of the source area,
immediately south of Rollins Road, on the former SLS property. Subsequent to the pilot injection test,
groundwater and soil vapor sampling were performed. Results from these events are presented in a report
titled Final Project Evaluation Report of In Situ Chemical Oxidation Using Sodium permanganate, which
was submitted to the NCDENR on December 11, 2000.
The NCDENR approved the full scale UIC injection permit for Phases I and II on April 2, 2001. Following
issuance of the UIC Permit, implementation of this remedial approach was carried out during June and
July 2001 at the Phase I area. Preliminary results from the Phase I full scale application will be discussed
in later sections of this report. On November 21, 2001, NCDENR approved the UIC permit for Phase III
full scale injection.
In addition to the in situ oxidation, a high -vacuum dual phase (HVDP) groundwater extraction and
treatment system coupled with a low vacuum soil vapor extraction (SVE) and treatment system have been
designed and installed at the site. The HVDP and low vacuum SVE systems have been designed to
specifically address the source area and any adjacent areas where elevated adsorbed and dissolved
phase concentrations continues to persist following the initial oxidation event. System installation activities
started in January 2000 with the installation of the system recovery and injection wells, which included
the construction of:
• 29 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 component installation was
completed in February 2001. The system was started up on March 1, 2001.

H Corporation of North Cnm ina, Inc.
A Member o! The IT Croup
Monitoring Report
W. P. Ballard and Downgradient Properties
1.2 Report Objectives
Page 6
November 29, 2001
The objectives of this report are:
• To provide current information regarding VOC groundwater concentrations across the site. After the
startup of the treatment system in March 2001 and the completion of Phase I of the Full-scale ISCO
at the area, VOC groundwater concentrations at the site are expected to drop.
• To provide current information regarding soil vapor contaminant concentrations in the immediate
vicinity of the source area of contamination at the site.
• To provide preliminary information regarding the effectiveness of the Phase I Full-scale ISCO
application completed at the site in July 2001. Residual permanganate, from the Phase I Full-scale
application, is expected to continue to have a noticeable impact on total VOC concentrations within
and outside the Phase I area.
• To provide information regarding the effectiveness of the HVDP/SVE recovery and treatment system
in lowering VOC concentrations in site's impacted media. The HVDP/SVE system has been
operational since March 2001.
• To establish a baseline of groundwater VOC concentrations in association with the Phase II Full-scale
ISCO application, which has been performed during the period from October 1 through October 12,
2001. Groundwater analytical data from the August 2001 sampling event will be used to evaluate the
effectiveness of the full scale injection of sodium permanganate at the Phase II area.

IT Corporation ofNorth Carolina, Inc.
A bfemher of The if croup
Monitoring Report Page 7
W. P. Ballard and Downgradient Properties November 29, 2001
2.0 FIELD ACTIVITIES
Several field activities have been performed at the site during the period covered by this remedial action
monitoring report. Activities performed include the following:
• HVDP/SVE system startup and operation,
• Implementation of Phase I full scale ISCO,
• Collection and analysis of soil samples from the source area,
-- • Semi annual groundwater monitoring, and
• Collection and analysis of soil vapor samples.
Groundwater monitoring results obtained during March 2001 (i.e. prior to the startup of the HVDP/SVE
system and implementation of the Phase I full scale ISCO) will be used as a baseline data for remedial
activities that took place at the site. Groundwater monitoring results obtained during the current
monitoring event (i.e. subsequent to the Phase I full scale ISCO and startup of the HVDP/SVE system)
will be used to evaluate the effectiveness of remedial activities. Results from the August 2001 monitoring
were also used as the basis for the design and implementation of the Phase II full scale ISCO application,
which took place during October 2001. Additionally, these results will be used as a baseline to evaluate
the effectiveness of the Phase II ISCO application.
2.1 Remedial Activities
A multi -technology approach has been implemented to mitigate the subsurface contamination that
-- impacts the site. High vacuum dual phase (HVDP) extraction and treatment in conjunction with low
i
vacuum soil vapor extraction (SVE), were selected to address dissolved phase chlorinated ethenes
and residual soil concentrations in the vadose zone and the underlying water table aquifer. The
l HVDP/SVE recovery and treatment system was specifically installed to address areas of the site
impacted with relatively high adsorbed and dissolved phase chlorinated hydrocarbon concentrations.
The second technology employs In Situ Chemical Oxidation (ISCO) using sodium permanganate. The
f ISCO treatment technology was selected to address impacted media across the whole site including
downgradient areas known to have relatively low levels of contamination. The following paragraphs
provide a brief description of each of these technologies and the relating remedial activities performed
during the current monitoring period.
2.1.1 Fixed Treatment Activities
Remedial activities using the HVDP/SVE recovery and treatment system were started during March
2001. The HVDP/SVE system was installed to address the highest adsorbed and dissolved phase
concentrations in the source area and areas immediately downgradient from the source. This system

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uses a two -level approach to address adsorbed and dissolved phase concentrations in subsurface
zones of varying permeability. The SVE system addresses adsorbed phase contamination in shallow
low permeability soils, which extend to approximately 35 to 40 feet bgs, and adsorbed phase
contaminants in the deeper smear zone created by dewatering activities. The HVDP system mainly
addresses the saturated zone and extracts adsorbed phase contaminants from the created deep
vadose zone as well. Groundwater recovery from the HVDP wells is performed using downhole
submersible pumps placed at depths ranging from 60 to 75 feet bgs. Soil vapor recovery is performed
using high vacuum positive displacement blowers.
The HVDP/SVE system employs a total of 14 SVE wells and 29 HVDP wells, which were installed to
address shallow and deep adsorbed and dissolved phase soil and groundwater contamination,
respectively. A map showing remediation system wells is shown in Figure 4. Shallow soil vapor
extraction wells are used to reduce adsorbed phase contamination in the source area and in areas
exhibiting the highest dissolved phase concentrations, concurrent with dewatering activities. The deep
HVDP recovery wells were installed to depths ranging from 64 to 75 feet below ground surface (bgs)
to reduce dissolved phase contamination throughout the impacted aquifer.
Groundwater recovered by the HVDP system is transferred to the treatment system compound
through 6-inch HDPE piping. Soil vapor recovery lines are constructed of 2-inch diameter schedule 40
PVC. Soil vapor extraction vapors are transferred from the HVDP and SVE points using six (6) trunk
lines. Recovered groundwater undergoes extensive treatment prior to being discharged. Initially,
recovered groundwater. is pumped into a shallow tray air stripper designed to handle a minimum
influent flow rate of 50 gpm. Treated groundwater from the air stripper then passes through a series of
bag pre -filters into two (2) granular activated carbon (GAC) vessels placed in series designed to
handle influent at a flow rate of 50 gpm. Treated groundwater exiting the GAC vessels is finally
discharged into the City of Greensboro sanitary sewer system under NPDES Permit No NC008686.
Air emissions from the HVDP/SVE system coupled with the off gas from the air stripper are routed to a
thermal catalytic oxidizer equipped with a scrubber unit for treatment prior to discharge into the
atmosphere. The influent air stream enters into the catalytic oxidizers heat exchanger where it is
preheated. The air passes through the tube side of the heat exchanger into the burner chamber,
where the contaminated air stream temperature is raised to the catalyzing temperature. When the
VOC laden air passes through the catalyst, an exothermic reaction takes place. The VOCs in the air
stream are reduced to carbon dioxide, water vapor, and hydrochloric acid. The treated air stream
then passes through the shell side of the heat exchanger to preheat the incoming air stream. The
vapor stream then enters the scrubber unit, which transfers the hydrochloric acid from the vapor
phase to the liquid phase. A caustic agent is used to equalize the pH in the scrubber unit, prior to .
discharging the clean water. Carbon dioxide gas is discharged directly to the atmosphere from the
scrubber unit. Removal efficiencies of up to 99% reduction are attainable with this technology.
The treatment system components are housed inside the warehouse building at the W. P. Ballard

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r-.
Property. The exhaust gases from the catalytic oxidizer scrubbers are vented to the atmosphere. One
main electric control panel controls the remediation system. A remote monitoring telemetry system
complete with multiple input and output capabilities is included with the control panel. The system is
capable of both voice and data communications.
During the performance of remedial activities, both effluent vapor and groundwater samples were
collected to monitor the performance of the treatment system components. Influent, post -stripper and
effluent groundwater samples were collected per the general requirements of a NPDES permit and to
monitor the total mass removal of the treatment system. Influent and effluent soil vapor samples were
collected to monitor the removal efficiency of the off -gas treatment unit and to track the total mass
removal of the system. Samples collected were submitted for analysis per the respective permit
requirements. Monthly samples were collected during the duration of system operations to track
system mass removal.
Monthly sampling was performed on the groundwater treatment system process stream for the
duration of system operations. Effluent sampling was performed per the requirements of the NPDES
permit requirements. Influent, post -stripper and mid -carbon samples were collected to monitor the
performance of the individual system components, determine the frequency of carbon change -out
events, and to calculate period and cumulative mass removal rates.
2.1.2 Phase I In Situ Chemical Oxidation Activities
Full-scale in -situ chemical oxidation (ISCO) using sodium permanganate was performed in the Phase
I area (remedial Zone 3) located hydraulically downgradient from the chlorinated solvent release
source, which was formerly located at the W. P. Ballard property. The Phase I injection area is a
paved area with generally lower concentrations of chlorinated ethenes. A site map showing the
location of the three designated remedial zones is included as Figure 5. The Phase I application
area, which is located around the former SLS warehouse, covers approximately 84,500 square feet (2
acres) of paved land. A site map showing the Phase I application area is included as Figure 6.
Sodium permanganate was delivered to the site in 55-gallon drums in the form of a 40% (w/v)
solution. The drums were stored in containment inside the warehouse at the W. P. Ballard property to
control spills that may occur as a result of an accidental release. The 40% sodium permanganate was
diluted to the desired concentration of 5% (w/v) in two 1,000-gallon polyethylene tanks, mounted in
containment areas in the back of two cargo trucks leased for this purpose. For each 1000-gallon
batch, 2.5 drums of the 40% permanganate solution were transferred to the polyethylene tank using a
Teflon -lined double diaphragm pump. Each tank was then topped off with municipal water to prepare
1,000-gallons of 5% solution for injection. The 5% permanganate solution was transported from the
mixing area to the individual application points using the truck -mounted 1,000-gallon polyethylene
tanks. Because NaMn04 is a strong oxidizer, special safety precautions were taken with regard to

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handling, dilution, and mixing.
The solution was injected into the subsurface through temporary Geoprobe points using a 4-foot
stainless steel injection tip designed for this application. Bottom up injection was employed to deliver
l�
the solution into the subsurface. In the bottom up method, the probe is pushed to the target depth and
injection progresses as the probe is incrementally pulled to the surface. This method of application
worked well with as many as three injection points being completed in one day. The top -down
application method was attempted at one point but proved to be ineffective using the available
injection equipment. The formation would not seal tightly enough around the rod and the injection tip
to prevent the permanganate solution from short-circuiting and coming back up the borehole. This
problem also occurred, to lesser extent, with the bottom up method near the surface. Pulling the
Geoprobe rod up a foot or two and attempting to again inject the permanganate solved the short -
circuiting problem.
Geoprobe points were incrementally advanced to the maximum attainable depth (i.e. until refusal was
encountered) in 4-foot intervals. The maximum attainable depth of the Geoprobe application points at
the Phase I area ranged from 30 to 73 feet bgs. After reaching the attainable depth, the injection
process began by raising the probe in 5-foot intervals. At each 5-foot interval, the Geoprobe rig was
disconnected from the boring and the Geoprobe rods were manifolded to the permanganate delivery
system, which consisted of a custom-made injection pump capable of injecting up to 10 gallons per
minute at an injection pressure of up to 300 psi. The permanganate mixture was injected into the
subsurface via a 4-foot. slotted stainless steel screen.
Approximately 35 gallons of 5% sodium permanganate solution were injected into the bottom of each
5-foot interval with the pressure, flow, and total volume documented on field data sheets. Prior to
injection of the permanganate solution, 10 gallons of water were injected to fracture the formation.
Injection flows ranged from 5 to 8 gallons per minute. Injection pressures ranged from 100 to 300 psi.
After the application of the solution, the manifold was gated off, the pressure was relieved and the
application assembly point was disconnected to allow the probe rig to reconnect. The application point
was pulled up through the next 5-foot interval, and the application process was repeated throughout
the saturated zone. At the completion of each point, borings were back -filled with hydrated bentonite
hole plug.
2.2 Source Area Geoprobe Soil Sampling
As suggested by NCDENR during the June 7, 2001 meeting regarding the source area at the W. P.
Ballard Property, IT Corporation advanced three Geoprobe soil borings in this area on July 10, 2001.
The borings were advanced to obtain soil samples from the vadose zone to evaluate current
contamination conditions in the source area at the site. One of the borings (Boring 1) was advanced to

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12 feet below ground surface (bgs) at the location of the former tetrachloroethene (PCE) above
ground storage tank (AST). Another boring (Boring 2) was advanced to 16-feet bgs at a location
where the chlorinated hydrocarbon and petroleum hydrocarbon plumes commingle to form the overall
contamination plume. A third boring (Boring 3) was advanced to 16-feet bgs at the former location of
the gasoline underground storage tank (UST). A map showing the approximate locations of the three
soil borings is shown in Figure 7. At each location, the subsurface soil was continuously sampled and
field screened, using a PID meter, during drilling activities. From each boring, the sample that gave
the highest PID response was sent for laboratory analysis. The samples were submitted to Test
America Inc. in Nashville, Tennessee for chemical analysis using USEPA Method 8260.
-2.3 Semiannual Monitoring Activities
2.3.1 Well Gauging
On August 20, 2001, thirty eight (38) monitoring wells were gauged to measure depth to water and
thickness of Light Non -Aqueous Phase Liquid (LNAPL) and Dense Non -Aqueous Phase Liquid (DNAPL)
prior to sampling. No LNAPL or DNAPL detectable thicknesses were observed in site wells included in
this monitoring event. Gauging data collected during the August 2001 monitoring event in addition to
historical gauging data are shown in Table 2. Groundwater surface elevation contours based on the
August 2001 gauging data are illustrated on Figure 8.
2.3.2 Field Monitoring
Prior to purging shallow and deep monitoring wells, the following groundwater field parameters were
measured; color, temperature, dissolved oxygen (DO) concentration, oxidation reduction potential (ORP),
pH and conductivity. Recorded groundwater field parameters are tabulated in Table 2.
2.3.3 Groundwater Sample Collectidn
During the period from August 20 through 23, 2001, Groundwater samples were collected from twenty
(20) shallow monitoring wells and eighteen (18) deep monitoring wells. Prior to purging, each well was
gauged using an electronic interface probe. A low flow technique using a variable frequency pump was
used to purge and sample the wells. At each well location, an optimum purge flow rate was established
using the variable frequency adjustment on the pump to prevent wells from drying up during purging.
Purged groundwater was directed through a flow -through cell where pH, conductivity, dissolved oxygen,
temperature, and oxidation/reduction potential (ORP) were continuously measured. A water sample was
taken when the measured parameters in each well reached a quasi -stable condition (i.e. the most recent
measurement did not vary more than 10% from previous two readings). If the well purged dry, the well
was allowed to recover to at least 80% of the pre -purging water level and a sample taken.
Immediately after collection, each sample was properly preserved, labeled, and packed in an iced -cooler.
The groundwater samples were shipped, on daily basis, via overnight courier to Test America, Inc., in
Nashville, Tennessee for analytical testing.

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Two duplicate samples were collected from wells MW-3 and MW-17 during the August 2001 monitoring
' event. These samples were collected to test the precision of the analytical procedure employed by the
laboratory contracted to complete the required analyses. Therefore, these samples were submitted under
blind sample names to avoid intentional bias.
2.3.4 Soil Vapor Sample Collection
_ On August 23, 2001 eleven (11) soil vapor extraction wells SVMP-1 through SVMP-10, and SVMP-12
were sampled. The wells were sampled by removing the well cap and installing a temporary (tri-seal)
wellhead adapter. A Gast° vacuum pump was connected to the wellhead 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. Following purging, samples were collected using an airtight syringe from the vacuum
pump outlet. Prior to sample collection, the syringe was flushed with 50 ml sample. The sample for
laboratory analysis was collected by injecting 40 ml aliquots into 22-ml airtight vials. Two vials were
collected from each SVMP well. Air samples were shipped via overnight courier to Micro -Seeps, Inc.,
in Pittsburgh, Pennsylvania for the analysis by Method AM 4.03 - for EPA Method 601/602 Compound
List. SVMP-11 was inaccessible for sampling during the August 2001 event.

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3.0 RESULTS
During the August 2001 monitoring event, a total of thirty eight (38) wells were gauged and sampled. The
results of this monitoring are discussed in the following sections. Analysis and evaluation of the laboratory
analytical results will be presented in Section 4.
3.1 Groundwater Gauging Results
Depth to water measurements were collected on August 20, 2001 using an electronic interface probe and
were referenced to the top of casing elevation for each well. Depth to water in shallow wells ranged from
j 10.9 feet below top of casing (btoc) in MW-12 to 24.54 feet btoc in MW-23. Depth to water in deep wells
ranged from 9.68 feet btoc in DW-7 to 34.26 feet btoc in DW-1: A summary of well gauging data from this
monitoring event, along with historic water level data, are presented in Table 2. The historic data
presented in Table 2 show seasonal fluctuations in the water table across the site. The August. 2001
groundwater elevation data are also graphically shown in Figure 8. As shown on Figure 8, the general
prevailing groundwater flow direction is predominantly toward the east with an average hydraulic gradient -
of 0.019 ft/ft (feet per foot).
3.2 Groundwater Sampling Results
All groundwater samples obtained during the August 2001 sampling event were analyzed for Purgeable
Halocarbons using EPA Method 601. In addition, six groundwater samples collected from wells MW-3,
MW-4, MW-5, MW-10, DW-3, and BMW-2 were analyzed by EPA Method 602 for the presence of volatile
petroleum hydrocarbons (i.e. BTEX or benzene, toluene, ethylbenzene, and xylenes). Analytical data
from the August 2001 sampling event provides updated information regarding the conditions of
groundwater VOC contamination at the site. These data will be used to:
• Evaluate the effectiveness of the full scale in situ chemical oxidation performed at the Phase I area
during the period from June 18 through July 11, 2001, and
• Establish the pre -injection VOC-concentration baseline for Phase II of the full-scale in situ oxidation
performed during the period from October 1 through October 15, 2001.
Additionally, the design of the Phase II full scale in situ oxidation, including required quantities of sodium
permanganate and injection rates, was completed based on the August 2001 analytical results.
3.2.1 Shallow Groundwater Sampling Results
During the August 2001 event, groundwater samples were obtained from twenty (20) shallow monitoring

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wells across the site. A summary of groundwater analytical data for shallow wells is presented in Table
3. Historic shallow groundwater data are presented in Table 4. Analytical data reports area included in
Appendix A. Additionally, total VOC concentrations in shallow monitoring wells for the March 2001
sampling event are graphically presented in Figure 9. Review of analytical data presented in Table 3 and
illustrated on Figure 9 reveals the following:
➢ Total VOC concentrations in shallow monitoring wells ranged from non -detect in wells MW-9, MW-
13, and MW-23 to 126,116 µg/I at well MW-3.
➢ Tetrachloroethene, (PCE) is the primary VOC constituent in the shallow groundwater plume at the
site. PCE degradation byproducts are the secondary components of the shallow groundwater
contamination plume.
➢ PCE concentrations in shallow groundwater samples ranged from non -detect (i.e. less than 1 µg/1)
in wells MW-9, MW-13, MW-23, MW-27, and MW-28 to 126,000 µg/I at the location of well MW-3.
➢ Shallow groundwater contamination was most pronounced in the source area, specifically in well
MW-3, which was installed near the location of the former PCE AST.
➢ Shallow groundwater contamination, based on total VOC concentration, was less pronounced in
monitoring wells downgradient from the source area. It ranged from non -detect at the location of
wells MW-9, MW-13, and MW-23 to 16,882 µg/I at the location of MW-10.
These results will be further discussed in Section 4.1
3.2:2 Deep Groundwater Sampling Results
During the August 2001 event, groundwater samples were obtained from eighteen (18) deep monitoring
wells located across the site. A summary of groundwater analytical data for deep wells is presented in
Table 5. Historic deep groundwater data are presented in Table 6. Analytical Data Reports are included
in Appendix A. Additionally; total VOC concentrations in deep monitoring wells for the August 2001
sampling event are graphically presented in Figure 10. A review of the analytical data presented in Table
5 and illustrated on Figure 10 reveals the following:
➢ Total VOC concentrations in deep monitoring wells ranged from non -detect in wells DW-4, DMP-1,
DMP-4 to 76,940 ELg/I in well HVDP-15.
➢ Tetrachloroethene (PCE) is the primary VOC constituent in the deep groundwater plume at the site.
Trichloroethylene (TCE) and PCE degradation byproducts are the secondary components of the
deep groundwater contamination plume.
➢ PCE concentrations in deep monitoring wells ranged from non -detect in wells DW-4, DW-5, DMP-
1, and DMP-4 to 62,000 FLg/I in well DW-3.
TCE concentrations in deep monitoring wells ranged from non -detect in wells DW-4, DW-7, DW-8,
DMP-1, and DMP-4 to 72,700 FLg/I in well HVDP-15.
➢ Deep groundwater contamination was most pronounced in the source area, specifically in wells
DW-3 (62,069 ELg/I) and BMW-2 (45,856 µg/1), which are installed near the location of the former

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PCE AST. Deep groundwater contamination was also significant in HVDP-15 located near the
Axton -Cross Building.
➢ Deep groundwater contamination was less pronounced in monitoring wells downgradient from the
source area. It ranged. from non -detect in wells DMP-1 and DMP-4 to 4,880 in well HVDP-27.
These results will be further discussed in Section 4.2
3.3 Duplicate Groundwater Sample Results
The results from the duplicate samples were compared with results from the regular samples to determine
the precision of the analytical method used (EPA Methods 601 and 602 in this case). In each case, the
relative percent difference (RPD) based on total VOC concentration was calculated as a measure of
precision. The results of this analysis are:
Sample ID Regular
Duplicate
Absolute
Relative Percent Difference
Sample
Sample
Difference,
(RPD), %
Result, µg/1
Result, µg/I
µg/I
MW-3 126,116
123,125
2,991
.2.4
MW-17 3,115
3,300
185
5.8
The results of the duplicate sample analysis indicate that the precision of the analytical method -
increases as the detected concentration of the target analytes in the sample increases. It should -be
noted that both the regular and duplicate sample result were reported in the summary tables included
with this report. However, the regular sample result will be used in future design calculations.
3.4 Soil Sampling Results
A summary of the soil analytical results is presented in Table 7. The laboratory analytical reports are
included in Appendix B.
Review of the data presented in Table 7 indicates that:
➢ Chlorinated hydrocarbon contamination was most pronounced in subsurface soil at the former
location of the PCE AST (Boring 1). At this location (Sample ID GP-7-1 0-01 -1), PCE was
detected at 2,537 mg/kg (milligrams per kilogram or ppm). Other chlorinated hydrocarbons
were also detected at this location at concentrations that ranged from 0.169 ppm to 3.38 ppm.
Naphthalene, a petroleum hydrocarbon constituent, was detected at a very low level (0.4412
mg/kg) at this location.

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➢ Only PCE was detected in the subsurface sample (Sample ID GP-07-10-01-2) collected at the
location of the commingled plume (Boring 2). PCE was detected at 0.0028 ppm.
i➢ No petroleum hydrocarbon constituents were detected in the subsurface sample (Sample ID
GP-7-10-01-3) obtained from the former location of the gasoline UST (Boring 3). Only PCE and
1,2-DCE were detected at low concentration levels of 0.0051 and 0.0149 ppm, respectively.
These results will be further discussed in Section 4.
3.5 Soil Vapor Sampling Results
A summary of the August 2001 soil vapor laboratory analytical results is presented in Table 8. Historic
Soil Vapor analytical data are presented in Table 9. Laboratory analytical reports are presented in
Appendix C. Review of the data presented in Table 8 indicates that:
➢ PCE is the primary contaminant at the source area. Detected PCE concentrations ranged from
8.4 ppm-v (parts per million by volume) at SVMP-3 to 1,300 ppm-v at SVMP-7.
➢ Total VOC concentrations ranged from 8.5 ppm-v to 1,300 ppm-v.
➢ Several other chlorinated solvents, mainly PCE degradation byproducts, have been detected in
soil vapor samples at relatively low concentrations. Compounds detected include: chloroform,
carbon tetrachloride, TCE, 1,2-DCA, cis- and trans- 1,2-DCE, and 1,1-DCE.
➢ Chlorinated solvent contamination was most pronounced in soil vapor samples obtained from
SVMP points located near the former location of the PCE AST.
These results will be further discussed in Section 4
3.6 Phase I Full Scale ISCO Results
Phase I of the full scale ISCO application was performed over an 18-day period from June 18 through
July 11, 2001. A total of 15,600 gallons of 5% sodium permanganate solution was applied to the
subsurface using two Geoprobe rigs via direct push and pressure injection. A total of 67 injection
points were completed in the Phase I area located mainly around the SLS warehouse. Fifteen of
these points were advanced near selected Phase I area monitoring wells. A site map depicting
injection points locations is shown On Figure 6. Injection dates, total injection depth, volume injected,
and injection method used for each point are summarized on Table 10. Field data sheets for each of
the injection points are included in Appendix D.
Throughout the application process, field data were collected to monitor the injection process and its
effects in the subsurface. During the performance of Phase I application, groundwater gauging and

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field monitoring for depth to water, pH, temperature, conductivity, ORP, dissolved oxygen, and color
were performed daily during the application using an Interface Probe and YSI water meter. The field
data collected during this monitoring program are summarized in Table 11. The field data sheets from
the injection byproduct monitoring are included in Appendix E. Additionally visual observation were
made to evaluate the potential occurrence of adverse impacts as a result of injecting a strong oxidant
into the subsurface. No pressure or temperature build-up was observed in any of the monitoring points
near the injection area. No adverse impact was noted on the pavement as a result of the injection
- process.
At the completion of the Phase I application activities, temporary soil borings were performed to monitor
for the subsurface transport of the injected .permanganate solution. The investigation consisted of
advancing Geoprobe borings in the immediate vicinity of Injection Points IP-67 and IP-34. Continuous 1.5-
inch diameter soil cores were collected using a standard Geoprobe Macro -core sampler. Soil cores were
visually inspected for discoloration associated with the transport and reaction of the permanganate
solution. The temporary soil borings were abandoned using the same technique employed on the
application points. Based on visual inspection of the macro core samples, the estimated short-term
injection radius of influence in the Phase I area ranged from 8 to 15 feet.
A preliminary evaluation of the Phase I ISCO effectiveness based on analytical data from the August
2001 sampling event will be discussed in Section 5.

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4.0 RESULTS EVALUATION
4.1 Groundwater Monitoring Data
For a preliminary data evaluation, the groundwater analytical results presented in Section 3.0 were
compared to the North Carolina Administrative Code 2L Standards (NCAC 2L). Table 3 (groundwater
analytical results for shallow wells) and Table 5 (groundwater analytical results for deep wells) list the
NCAC 2L standard for each VOC. Analytical concentrations above the NCAC 2L standard are bolded
and exceedances are discussed in the following sections.
4.1.1 Shallow Groundwater Data
Review of the VOC analytical data presented in Table 3 compared to the NCAC 2L standards reveals
the following:
➢
PCE concentrations exceeded the NCAC 2L standard of 1 µg/I in all samples but those
obtained from wells MW-9, MW-13, MW-23, MW-27, and MW-28 (i.e. PCE concentrations
continue to exceed the NCAC 2L standard in 75% of the shallow wells sampled during August
2001).
➢
Tricholoroethene (TCE) concentrations exceeded the NCAC 2L standard of 2.8 µg/I in
samples obtained from wells MW-2, MW-4, MW-10, MW-12, MW-15, MW-17, MW-22, MW-
27, MW-28, LMP-1, and LMP-2. That is, TCE concentrations continue to exceed the NCAC 2L
standard in 55% of the shallow wells sampled during August 2001.
➢
Cis-1,2-Dichloroethene (cis-1,2-DCE) concentrations exceeded the NCAC 2L standard of 70
µg/I in samples obtained from MW-2, MW-4, MW-17, MW-27, and MW-28 (i.e. 25% of the
shallow wells).
- ➢
1,2-Dichloroethene (1,2-DCA) concentrations exceeded the NCAC 2L standard of 0.38 µg/l in
I�
samples obtained from MW-6 and MW-10 (i.e. 10% of the shallow wells).
➢
1,1-Dichloroethene (1,1-DCE) concentrations exceeded the NCAC 2L standard of 7 µg/1 in
one sample obtained from MW-5 and MW-6 (i.e. 10% of the shallow wells).
➢
Carbon tetrachloride concentrations exceeded the NCAC 2L standard of 0.3 µg/I in samples
_
obtained from MW-3 (i.e. 5% of the shallow wells).
➢
Chloroform concentrations exceeded the NCAC 2L standard of 0.19 µg/I in samples obtained
from MW-1, MW-2, MW-3, MW-10, MW-15, MW-17, LMP-1 and LMP-2 (i.e. 40% of the
-
shallow wells).
-- ➢
1,2-Dichloropropane concentrations in wells MW-12, LMP-1, and LMP-2 exceeded it NCAC

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2L standard of 0.56 µg/I (i.e. 15% of the shallow wells). None of these wells is located at the
source area of the site.
Analytical data from the August 2001 sampling event, for selected monitoring wells, was compared to
analytical results from previous sampling events. Historic groundwater analytical data for shallow
monitoring wells is presented in Table 4. Review of the data presented in Table 4 reveals the
following:
➢ Total VOC concentration in wells MW-3, MW-4, and MW-6, located in the primary VOC
contamination source area, dropped since the last sampling event conducted in March 2001.
The observed decrease ranged from 6% at the location of MW-6 to 70% at the location of MW-
4. The observed decrease in these wells may be due in part to the continuing impact of sodium
permanganate injected during the ISCO pilot test conducted in May 2000 and in part due to the
,operation of the SVE system.
➢ Total VOC concentration in wells MW-1, MW-2, and MW-5, also located in the primary source
area, increased since the last sampling event conducted in March 2001. The observed increase
ranged from 239% at the location of MW-1 to 377% at the location of MW-2. The observed
increase in total VOC concentrations at these well locations is due mainly to an increase in
PCE concentrations. Continuing dissolution of the DNAPL entrapped in the vadose zone is the
primary source of PCE in these wells.
➢ Total VOC concentration in MW-7, located relatively upgradient from the source area
decreased by 84%.since September 2000 (a sample was not collected from this well in March
2001). Since total VOC concentrations in this well have been fluctuating from non -detect to 184
µg/l, the observed decrease is most likely due to seasonal fluctuations.
➢ Total VOC concentration in MW-10, located immediately downgradient from the source area,
increased by 714%. The observed increase at this location can be attributed to the short—term
effect of pumping of the network of HVDP recovery wells (i.e. HVDP-21 through HVDP-29)
located immediately downgradient from MW-10. Pumping of the HVDP wells may have caused
the mobilization of source area contamination to downgradient locations, which in the process
may have led to the observed increase in MW-10.
➢ Total VOC concentration in MW-28 located on the Axton -Cross property, increased by 199%
since March 2001. The observed in total VOC concentration at this location is due mainly to
increase in Cis-1,2-DCE and TCE concentrations. Both of these constituents have been
historically detected in this well.
➢ Total VOC concentration in MW-27 also located on the Axton -Cross property, decreased by
90% since March 2001. The observed decrease at this location is due primarily to active
remediation using the HVDP/SVE system wells near the location of MW-27.
➢ Total VOC concentration in wells MW-12, MW-13, MW-15, MW-17, MW-18, MW-22, all located
in the Phase I ISCO area, decreased since the March 2001 sampling event. The observed
decrease ranged from 16% at the location of MW-15 to 100% at the location of MW-13. The

- IT Corporation ofNorth Carolina, Inc.
A Member of The !T' Croup
Monitoring Report Page 20
W. P. Ballard and Downgradient Properties November 29, 2001
decrease in total VOC concentrations in these wells is primarily as a result of the full scale
ISCO application performed at the Phase I area during June and July 2001.
Current (August 2001) and previous (March 2001) total VOC concentration isopleths for shallow wells
are plotted together on the same isoconcentration contour map as shown in Figure 11. A comparison
of current and previous isopleths shows the following:
• Significant reduction in the extent of the distal (downgradient) portion of the plume manifested
primarily as a narrowing of the contaminated area on the Axton -Cross and SLS properties.
• A contraction of the 5,000 mg/I contour due to the implementation of the Phase I ISCO at the
downgradient area.
• A slight expansion of the 10,000 and 20,000 µg/I contours downgradient. This downgradient
movement is likely due to the groundwater gradient being influenced by the pumping associated
with operation of the remediation system.
4.1.2 Deep Groundwater Data
Review of the VOC analytical data presented in Table 5 compared to the NCAC 2L standards reveals
the following:
➢ PCE concentrations in deep monitoring wells exceeded the NCAC 2L standard of 1 µg/I in all
but samples obtained from wells DW-4, DW-5, DMP-1, and DMP-4 (i.e. PCE concentrations
continue to exceed the NCAC 2L standard in 78% of the deep wells sampled during August
2001).
➢ TCE concentrations in deep monitoring wells exceeded the NCAC 2L standard of 2.8 µg/I in
all but samples obtained from wells DW-4, DW-5, DW-8, DMP-1, and DMP-4 (i.e. TCE
concentrations continue to exceed the NCAC 2L standard in 78% of the deep wells sampled
during August 2001).
➢ Cis-1,2-Dichloroethene concentrations exceeded the NCAC 2L standard of 70 µg/I in samples
obtained from BMW-2, HVDP-15, HVDP-22, and HVDP-27 (i.e. 22% of the deep wells).
➢ Chloroform concentration exceeded the NCAC 2L standard of 0.19 µg/I in the sample
obtained from DW-3 (i.e. 5.6% of the deep wells).
➢ 1,1-Dichloroethene concentrations exceeded the NCAC 2L standard of 7 µg/I only in the
-- sample obtained from BMW-3 (i.e. 5.6% of the deep wells).
➢ Benzene concentration exceeded the NCAC 2L standard of 7 µg/I only in the sample obtained
from DW-3 (i.e. 5.6% of the deep wells).
Deep well analytical data from the August 2001 sampling event was compared to analytical
results from previous sampling events. Historic groundwater analytical data for deep monitoring
wells is presented in Table 6. Review of the data presented in Table 6 reveals the following:

IT Corporation of North Carolina, Inc.
A A1ember of The ITGroup
Monitoring Report Page 21
W. P. Ballard and Downgradient Properties November 29, 2001
➢ Total VOC concentrations in wells DW-3 and BMW-2, located in the primary VOC
contamination source area, increased by 28% and 36%, respectively since the March 2001
sampling event. The increase can be attributed to the continuing dissolution of the entrapped
DNAPL from the source area vadose zone.
➢ Total VOC concentration in well DW-5 and DMP-2, located in the middle parking lot
downgradient from the primary and secondary source areas, increased by 169% and 39%,
respectively since March 2001 sampling event. The observed increase at these well locations is
due to an increase in TCE concentration. Increased TCE concentrations can be attributed to
pumping of treatment recovery wells located in the middle parking lot (i.e. HVDP-21 through
HVDP-29). Operation of these wells may have led to the transport of TCE contamination from
upgradient source locations.
➢ Total VOC concentrations in wells DW-7, DW-8, DW-13, DMP-1, DMp-3, and DMP-4, all of
which located in the Phase I ISCO area, decreased since the March 2001 sampling event. The
observed decrease ranged from 9% at the location of DW-7 to 100% at the locations of DMP-1
and DMP-4. The decrease is primarily due to the full scale ISCO application at the Phase I
area, which was performed during June and July 2001.
➢ Total VOC concentration in wells DW-14 and DW-15, located along the north side of the SLS
warehouse and downgradient from the Phase I ISCO application area, experienced variable
change. Total VOC concentration in DW-14 increased by 117% and in DW-15 decreased by
5%. Since, these, two wells have low concentrations (i.e., 571 and 561 µg/I, respectively), the
observed changes may be as a result of experimental variability and seasonal fluctuations.
Current (August 2001) and previous (March 2001) total VOC concentration isopleths for deep wells
are plotted together on the same isoconcentration contour map as shown in Figure 12. A comparison
of current and previous isopleths shows that current total VOC concentration isopleths indicate a
significant reduction in the extent of groundwater contamination deeper aquifer zone compared to
March 2001 levels. Total VOC concentrations appear to be concentrated in remedial zones #1 and #2
(i.e. W. P. Ballard and the Axton -Cross Properties). The distal portion of the plume is greatly reduced
and appears to be isolated from the source area.
4.2 Source Area Soil Data
Geoprobe soil sampling data for samples collected on July 10, 2001 are presented in Table 7. These
data confirm that PCE is the primary contaminant at the source area. The highest PCE concentration
of 2,537 ppm was detected in the sample collected at the location of the former PCE AST. It appears
that the source area vadose zone soils continue to exhibit high levels of PCE. This PCE concentration
indicates the likely presence of an entrapped DNAPL in the source area vadose zone. Continuing
dissolution of PCE from this DNAPL is the primary source for groundwater contamination at the site.
The exact limits of the source area "hot spot" are not well defined at the present. Therefore, additional

IT Corporation of North Carolina, Inc.
A dlemher of The IT Croup
Monitoring Report Page 22
W. P. Ballard and Downgradient Properties November 29, 2001
soil samples need to be.collected from the source area vadose zone to better define the lateral and
vertical extents of the heavy PCE contamination. The highest PCE concentration determined during
this investigation will be used to calculate the quantity of permanganate required to treat the source
area vadose zone during the Phase III application. The use of this concentration for this application
will provide a conservative estimate regarding oxidant amounts to insure that PCE within the source
area will be fully oxidized.
4.3 Soil Vapor Data
Comparison of the recent soil vapor sampling data presented in Table 8 with the historic soil vapor
data presented in Table 9 indicate that VOC concentrations in the source area vadose zone vapor
phase have been significantly diminished. The data indicate that over 99% reduction had been
achieved at some locations. Except for the sample obtained from SVMP-8, the observed reduction
was in excess of 90%. In SVMP-8, the observed reduction in vapor phase concentration was 84%.
Operation of the soil vapor extraction system over the past six months was primarily responsible for
the observed reductions. In addition, ISCO remedial activities performed during the May 2000 pilot
test are partially responsible for the decrease in soil vapor concentrations.

IT Corporation of North Carolina, Inc.
A Alemher of The 17' Croup
Monitoring Report Page 23
W. P. Ballard and Downgradient Properties November 29, 2001
5.0 REMEDIATION EFFECTIVENESS EVALUATION
Remedial activities implemented at the site during the current monitoring period included the
implementation of the full scale ISCO at the Phase I area (remedial zone 3) and startup and operation
of the HVDP/SVE system. The following paragraphs provide a brief discussion regarding the
effectiveness of site remediation efforts based on various remedial data acquired during this period.
5.1 In Situ Chemical oxidation Using Sodium Permanganate
In situ chemical oxidation using sodium permanganate has been applied at the site during a pilot test
performed in May 2000 and during a full scale ISCO application performed at the Phase I area (i.e.
remedial zone #3) in June and July 2001. Approximately 34,100 pounds of sodium permanganate
were injected in the form of 15% solution during the pilot test and 21,450 pounds where injected in the
- form of 5% solution during the Phase I full scale application. The following sections discuss the
observed change in total VOC groundwater concentrations as a result of sodium permanganate
injection during these two events.
5.1.1 Pilot Injection Test
The ISCO pilot test using sodium permanganate was conducted approximately 15 months prior to the
August 2001 sampling event. Pre- and post- pilot injection groundwater analytical results for wells at
the WP Ballard property are summarized in Table 12. As shown in Table 12, pre -injection baseline
groundwater quality data were acquired on March 24, 2000. Several sampling events have been
conducted since the completion of the pilot test in May 2000.
Total VOC concentrations in wells MW-3, located near the former location of the PCE AST, and MW-
4, located in the area of the former petroleum UST, continue to decline. Both of these wells
experienced significant rebound immediately after the performance of the pilot test. The primary
reason for the observed reduction in total VOC concentration in these two wells can be attributed to
the operation of the SVE system, which was installed to target shallow (i.e., <40 feet bgs) subsurface
soil contamination.
The August 2001 analytical results indicate that groundwater total VOC concentrations rebounded -in
several wells around the pilot test injection area. The data presented in Table 12 reveal that
- rebounding in total VOC concentration was observed in wells MW-1, MW-2, MW-5, DW-3, and BMW-
2. The reason for the observed rebound can be attributed to continuing dissolution of chlorinated
solvents from the DNAPL entrapped in the source area vadose zone. Additionally, it appears that, as
of the August 2001 sampling event, most residual sodium permanganate from the pilot injection test
has been fully consumed by the oxidation processes.

IT Corporation ofNorth Carohna,.be.
A dlezuher of The lf Croup
Monitoring Report Page 24
W. P. Ballard and Downgradient Properties November 29, 2001
The observed change in total VOC concentrations in shallow and deep groundwater wells since the
pilot test in May 2000, is illustrated in Figures 13 and 14, respectively. The observed VOC
concentration profile in shallow source area wells is more complex than that in deep wells. The
complexity stems from the hydrogeologic nature of the surficial aquifer at the site, which is less
permeable than the deep aquifer and more vulnerable to seasonal fluctuations in the water table.
5.1.2 Preliminary Phase i Full Scale Application Results
Groundwater samples collected during the August 2001 sampling event from 13 wells (7 shallow and
6 deep wells) located in the Phase I application area, provided preliminary information regarding the
effectiveness of this application. To quantify the effectiveness of the Phase I ISCO application,
analytical results from the August 2001 sampling event were compared to the March 2001 analytical
data (i.e. baseline data). Pre- and post- Phase I analytical results for shallow and deep monitoring
wells are presented in Tables 13 and 14, respectively. The observed change in total VOC
concentrations in Phase I shallow and deep groundwater wells is illustrated in Figures 15 and 16,
respectively.
Review of the data presented in Table 13 and illustrated in Figure 15 reveal that the observed
reduction in total VOC concentrations in Phase I shallow wells ranged from 16% at the location of
MW-15 to 71 % at the location of MW-18. Reduction in dissolved phase PCE ranged from 12 % at the
location of MW-22 to 63% at the location of MW-15. Review of the data presented in Table 14 and
illustrated in Figure 16 reveal that reduction in total VOC concentration in Phase I deep wells ranged
from 9% at the location of DW-7 to 100% at the locations of DMP-1 and DMP-4. Reduction in
dissolved PCE concentration in Phase I deep wells ranged from 6% at the location of DW-7 to 100%
at the locations of DMP-1 and DMP-4.
The reason for the variable reduction in total VOC concentration in wells located within the Phase I
application area is primarily due to variability in the amounts injected at various Phase I areas. For
example, areas known to have low VOC concentrations, such as the area around MW-12 and DW-7,
received less oxidant than areas known to have high VOC concentrations, such as the area around
MW-17, DW-8, and DMP-4.
The observed reduction in total VOC concentrations was more pronounced in deep wells and
relatively less pronounced in shallow wells. The reason for the observed higher reduction in deep
wells is due in part to increased formation permeability with depth and in part due to the nature of the
injection method. The Bottom -up injection method appears to create a preferential flow pathway at the
bottom of the borehole. The presence of this pathway leads to the accumulation of the injected oxidant
at the bottom of the borehole where hydraulic permeability is relatively higher. Injected permanganate
solution would be expected to flow more readily through the least flow -resistant pathway within the

IT Corporadon ofNorth Carolina, Inc.
A dlember of The IT Croup
Monitoring Report Page 25
W. P. Ballard and Downgradient Properties November 29, 2001
subsurface.
During injection, daily field monitoring of indicator parameters including pH, DO, ORP and specific
conductivity was conducted in area monitoring wells to monitor the distribution of the oxidizer and the
reaction of the aquifer to treatment. A follow-up monitoring of field indicator parameters was
conducted on August 3 and August 20, 2001. Field measurements collected to date were graphed for
each monitoring well and are included in Appendix F. As was the case in the pilot test, for most
wells, the graphs show a temporary increase in ORP as a primary indicator that oxidation is taking
place. Expected temporary changes in the other parameters are also shown on the graphs. These
data show that oxidation is occurring in groundwater.
5.2 Total Fluid Recovery and Treatment Systems
As mentioned before, a multi -technology approach has been implemented to remediate the W. P. Ballard
and downgradient properties. HVDP in conjunction with SVE (HVDP/SVE), were selected to mitigate
-- dissolved -phase VOC concentrations and residual soil concentrations in the overburden aquifer. Although
these two systems were simultaneously operated, dissolved phase and sorbed phase remedial data will
be evaluated separately. The following paragraphs provide a brief description of the total fluid recovery
results and briefly discuss the impact of problems encountered during the remedial period on the overall
treatment system effectiveness.
5.2.9 Groundwater Recovery Data
During the operational period from March 1, 2001 through September 6, 2001 the groundwater recovery
and treatment system processed approximately 2,209,832 gallons of groundwater. The system was down
for approximately 78 days during the first 4 months of the operational period due to problems associated
with the catalytic oxidizer used to treat system off -gas. The catalytic oxidizer unit has been down several
times due to design deficiencies related to the scrubber unit. The manufacturer replaced and rebuilt
several parts to address deficiencies and render the unit operational. Except for maintenance shutdowns,
the system was operated continuously after the catalytic oxidation unit was repaired.
Monthly influent and pre -carbon (mid -influent) samples were collected to monitor the effectiveness of the
groundwater treatment system. Based on system totalizer flow rate of treated water, and influent and
effluent concentrations of VOC compounds, the groundwater treatment system removed a total of 24.6
pounds of TCE and 50.1 pounds of PCE during the operational period. Groundwater removal data are
presented in Table 15. Copies of the laboratory analytical reports for the treatment system samples
obtained during the current reporting period are included in Appendix G.
Treated groundwater is discharged to the sanitary sewer system per NPDES Permit # NC008686. Per

IT Corporation ofNorth Carolina, Inc.
A Member of The IT Croup
Monitoring Report Page 26
W. P. Ballard and Downgradient Properties November 29, 2001
NPDES permit requirements effluent samples were obtained from the treatment system on monthly basis
throughout the period of system operation. Several exceedances to NPDES permit levels were reported
during the monitoring period. NPDES permit analytical results (effluent sampling) are presented in Table
16. As shown in Table 16, NPDES permit exceedances were mainly associated with total suspended
solids and chronic toxicity data. IT Corporation implemented several steps to identify and eliminate the
chronic toxicity problem.
After the effluent failed the chronic test in June, IT Corporation cleaned out sediment that had
accumulated in the influent and effluent holding tanks and changed out the carbon in the two 1000-lb
carbon vessels at the site. Since the effluent failed the second multiple concentration chronic toxicity
test in July, it was concluded that the tanks sediment was not the cause of the problem.
In August, an attempt was made to determine the cause for the chronic toxicity failures by collecting
and analyzing water samples for a full range of water quality parameters. The samples were split
between two labs for chronic toxicity testing, however, both tests failed, indicating that the problem
was likely not due to lab error. Additionally, water quality analysis performed on two sets of system
effluent samples in August, indicated that the effluent had levels of dissolved Aluminum, Iron,
Magnesium and Zinc in the part per million range. These metals are naturally occurring in
groundwater at this site and are not significantly removed by the current treatment system. It was
hypothesized that one or more of these metals may be the cause of effluent toxicity. It was also
concluded that the PCE and other VOC contamination from the site is not likely being the cause of the
problem. The groundwater remediation system was designed to remove volatile organics such as
PCE from the effluent and the laboratory analytical data confirmed that PCE and other VOCs were in
fact being removed to levels below the laboratory detection limits.
A cost -benefit analysis was performed to evaluate the installation of additional treatment to eliminate
the naturally occurring inorganic constituents. It was concluded that the cost of modifying the system
was not justified. Therefore the HVDP/SVE system was shutdown on September 27, 2001. The
remainder of the site remediation will depend on the ISCO technology, which has shown to be
effective.
5.2.2 Vapor Phase Recovery Data
Throughout the treatment period, influent gas samples were collected on monthly basis to evaluate the
effectiveness of VOC removal via volatilization by the HVDP/SVE system. A summary of the volatile
organic compounds extracted via volatilization by the HVDP/SVE system is presented in Table 17. VOC
concentrations in the influent air stream of the HVDP/SVE system have been measured in parts per
million (ppm). Influent data for only cis-1,2-DCE , TCE , PCE, and total hydrocarbons (THC) are included
in Table 17. During the operational period from March through September 2001, PCE influent
i,
concentrations ranged from non -detect (i.e. less than 0.23 ppm) on August 23, 2001, to 46 ppm on May
11, 2001. TCE influent concentrations ranged from non -detect to 0.68 ppm. During the operational period,
i

IT Corporation of North Carolina, Inc.
A Afember of Vie 17' Croup
I
Monitoring Report Page 27
W. P. Ballard and Downgradient Properties November 29, 2001
approximately 313 pounds of PCE, 2.7 pounds of TCE, 2.6 pounds of cis-1,2-DCE, and 64.4 pounds of
THC, were extracted by the HVDP/SVE system. Copies of the laboratory analytical reports for the
HVDP/SVE system gas samples obtained during the current reporting period are included in Appendix
H.
Off -gas effluent air samples were also collected on monthly basis to evaluate compliance with the air
permit requirements. A summary of the off -gas air permit compliance data is presented in Table 18. VOC
concentrations in the off -gas effluent air stream have been measured in parts per billion on a volume basis
(ppb-v). Approximately 0.63 pounds of PCE and 0.02 pounds of benzene were emitted to the atmosphere
throughout the treatment period. These amounts are well below the compliance rates allowed by the air
permit. It appears that the thermal oxidation unit effectively destroyed vapor phase contaminants prior to
discharge to the ambient air:

IT Corporation of North Carolina, Inc.
A A/ember of The 17' Croup
-- Monitoring Report Page 28
W. P. Ballard and Downgradient Properties November 29, 2001
6.0 CONCLUSIONS
Based on the results of the August 2001 monitoring event and data acquired during the operation of
the HVDP/SVE recovery and treatment system, the following conclusions are made:
• The vertical and horizontal extent of the groundwater VOC contamination at the site, as defined in the
December 1999 CSA, continues to be defined. Although the plume boundaries have not changed
significantly, the intensity of the leading edge of the plume has been reduced.
• Total VOC concentrations in shallow and deep groundwater throughout the Phase I ISCO area have
been reduced. Reduction in shallow wells ranged from 16% to 71 % and from 9% to 100% in deep
wells. Since groundwater samples were taken soon after the Phase I injection, the results from the
August 2001 sampling event are considered preliminary. More reduction is anticipated to occur in the
Phase I area wells. The oxidation process, in previous events, by sodium permanganate has been
seen to occur over an extended period after the actual injection of the oxidant.
• The decrease in total VOC concentration in deep groundwater wells was more pronounced than in
shallow wells. The use of the bottom up injection method during the Phase I full scale application is
thought to be the reason for this variation. The other reason is greater formation permeability at depth,
which allowed better dispersion of the oxidizer and subsequently more oxidizer was available for
reaction with VOCs in the deeper zone.
• The HVDP/SVE system was started in March 2001 and operated intermittently throughout the current
monitoring period. The system experienced several operational problems related to the thermal
oxidizer. A total of 50 pounds of PCE and 25 pounds .of TCE were removed from the site via
groundwater extraction using the HVDP recovery wells. A total of 313 pounds of PCE, 2.7 pounds of
TCE, and 64.4 pounds of THC were removed from the site by the vapor extraction system (i.e.
HVDP/SVE).
• Rebound in total VOC concentrations was observed in several shallow and deep wells located at the
W. P. Ballard property (the primary source area). The observed rebound is suspected to be the result
of continued dissolution of PCE from the DNAPL entrapped in the source area vadose zone.
• Total VOC concentrations continued to decrease in several shallow and deep wells located at the W.
P. Ballard property (the primary source area). The observed decrease is most likely a result of
operating source area SVE system wells.
• Total VOC concentrations at locations immediately downgradient of the source area (i.e. Axton -Cross
property) decreased at some locations (MW-27 for example) and increased at other locations (MW-10
for example). The observed change in the total VOC mass distribution can be attributed to the
operation of the HVDP/SVE recovery system during the current monitoring period. At locations further
downgradient of the Axton -Cross property (DW-5 and DMP-2), total VOC concentrations increased.
The observed increases may be as a result of TCE migrating from the secondary source area
previously identified on the Axton -Cross property. The migration of TCE was most likely induced by
the operation of HVDP recovery wells located in the vicinity of DW-5 and DMP-2.

IT Corporation ofNorth Carolina, Inc.
A iticmbcr of The IT Croup
Monitoring Report Page 29
W. P. Ballard and Downgradient Properties November 29, 2001
• Geoprobe soil sampling data obtained from the source area vadose zone in July 2001 indicate that
the bulk of the DNAPL contamination mass is still present in the source area soils. PCE contamination
in excess of 2.5 million µg/kg was detected in the sample collected at the former location of the PCE
AST. It is highly likely that the presence of the entrapped DNAPL in the source area vadose zone is
the primary cause for the continuing contamination of groundwater at the site.
• Soil vapor sampling data obtained in August 2001 from 12 soil vapor monitoring points located in the
source area indicate that VOC vapor phase concentration has been significantly diminished. The
observed decrease in vapor phase concentrations ranged from 84% to over 99%. Operation of the
SVE system during the past six months and overall decrease in source area contamination mass
following the implementation of the ISCO pilot test, are thought to be the primary reasons for the
observed decreases.

1T Corporation of Norih Carolina, Inc.
A Member of 77)c IT Croup
I
Monitoring Report Page 30
W. P. Ballard and Downgradient Properties November 29, 2001
7.0 RECOMMENDATIONS
The basis for selecting multiple treatment technologies to remediate the site were established in the
corrective action plan (CAP) submitted for the NCDENR in May 1999. However, an approval for the CAP
by the NCDENR has not been issued yet. NCDENR's formal approval of the CAP is essential at this point
since the implementation of the selected technologies (HVDP/SVE and in situ chemical oxidation) has
already been performed. These technologies have been tested and proved to be appropriate and effective
to remediate the site. Therefore, we recommend that:
• NCDENR should approve the CAP that was submitted in May 1999.
• SLS should excavate and remove the source area "hot spot" from the site. The continued presence
of high vadose zone VOC concentrations at and near the former location of the PCE AST appear to
be impeding efforts to remediate source area and downgradient groundwater.
• SLS should implement the full-scale permanganate injection to expedite reduction of VOC
concentrations in source area groundwater and soils. The recommendations made after completion
of the Phase II ISCO, should be followed.
• SLS should suspend remedial efforts using the HVDP/SVE remediation system to allow for successful
implementation of the ISCO technology.
8

IT Corporation ofNorth Carolina, Inc.
A Alcmhcr of The IT Croup
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_ NORTH CARONA, INC.
G � � _ ®L1f�6Nrdl�ell'liwp
GATEWAY CENTRE 0 LVO.
(91lJ 4{7-12]7MORRISVILLE.NC 1730
o
I �
r : FULL SCALE IN SITU
I LEGEND CHEMICAL OXIDATION
/ PHASING PLAN
NONRORING WELL
n REINFORCED CONCRETE PIPE /
PHASE I OR REMEDIAL ZONE #3 \ Ste` `� UTILITY PONE / W.P. BALLARD PROPERTY
I PHASE II OR REMEDIAL ZONE #2 LIGHT POLE LOCATION,
CREENSBORO, NC
El INLET
NOTES:
HORIZONTAL DATUM IS NAD '83. ® PHASE III OR REMEDIAL ZONE #1 (SOURCE AREA) ® DRAINAGE MANHOLE DESIGNED erl DETAINED BY:
VERTICAL DATUM IS NGVD '29. O SS CLEANOUT x CHECKED By,
RHW
THIS IS NOT A BOUNDARY SURVEY. ' w
NOT FOR RECORDATION. Cd WATER VALVE —EL— ELECTRIC LINE DRAWING DATE: ACAO PILE
I :
MAPPNG SCALE 1 INCH = 60 FEET. —W— WATER LINE 11/23/99 7535BASE2
MAPPNG CONTOUR IN
SHOWN HEREON = 2 FEET. FIRE HYDRANT
PROPERTY LINE FROM PLAN ENTITLED 'ALTA/AGSM LAND GRAPHIC SCALE o EXISTING IRON PIPE —C— GAS LINE I I PROJECT 75 NOTES:
TITLE SURVEY FOR: GREENSBORO D.C. PARTNERS, LTD.', \ 60 0 30 60 0 120 IS SEWER MANHOLE — T— TELEPHONE LINE 1035
DATED 5/12/95 PREPARED BY ROBERT E. WILSON,INC. cv
\ ( ) CAS VALVE FIGURE d
IN FEET

NW-14
ASPHALT
7s PENCE
ASPnALr
{
ASPHALT
QJ WJS-E DW-1 i CUR TYPICAL
v ' BUILDING q,T t
BLOCK WALL ® CIO O 0
Ti STORAGE TANK
BUILDING sA't� mp ® wW2w
4 _2 BUILDING � 'ti Q � O Dw-14 C' \7 W-4
T y Hw M e23 e Q ONP-4 O ww(�f m
0 e M-e.. ly �•'t� 9 �- ��:,i',: �::i .li.. Dw- `� DwP
BUILDING
e{ � wWw O
• ® NwP-ae E1 /�may JZ O
OR�N 'V 4S ASPHALT PAVEMENT
HIMP-3 � yid rAV�yVV
� AND CONCRETE
r
BUILDING Iv' 1 vOA-a �S+E n-Ro :a"•`AP-27 wlv- 7N
�`p r
2 HVDP-12 {I I:' rW , v v v O
rT / RO PO / "� 4 All
w hs W-17
v r Nw-e
R H VDP-10 r
11W'e e ASPHALTW Qr
o r
H\1P-21 y
i _p 19• r r �2' NwP-2]
T{ AHVDP-n �-.o T r CC • O DMP-3
O ` T
�} 8
q
'P �P i wP-23 31
� r ® GO
DNP-2 O NW-16 O MW-21
ww-{ O r
® NW v MW-1! +
BUILDING
• HwP-22
HVDP-14 v
® M-10 vv,r C) IV f
MW-2T • r
NWP-1{ ® O
SW-12 NM-7
01 OUP-1
C
Y0P-21 ®
CI' 1r 4{ t
H �1{ SVE-11 ® qqq
TCLF
MAP-20 �
C;y 34
Sw-14
S
LNP-1w
OD
WP-1 --AMW-12
-� O ! �-10W
O %LMP-7 6 '*-�N
ETA NWG
o � P S z..,. WALL BM�3 I
PHASE I INJECTION
POINT COORDINATES
BORING
DESIGNATION
NORTHING
EASTING
GROUND
ELEV,
BORING
➢ESIGNATION
NORTHING
EASTING
GROUND
ELEV.
IP-34
656315. 145
1756961. 857
862. 40
IP-77
856730. 649
1757116. 609
862, 11
34-1N
958317, 106
1756961. 372
862.39
IP-78
858770, 807
1757118. 184
862.12
34-5N
850322.626
1756961. 445
862. 40
IP-81
858729.853
1757157. 365
862. 03
34-1ON
558330. 925
1756961. 654
862. 38
IP-82
BSB765. 036
1757158, 756
861,66
IP-36
858357, 534
1756926. 924
B61. 54
IP-65
858730. 007
1757203, 561
862. 00
IP-44
858432. 568
1757004. 034
862. 40
IP-86
658768. 623
1757204, 175
861. 02
IP-45
8584761 121
1757005. 306
862.43
IP-88
858666, 059
1757242. 064
862. 58
IP-46
858396. 194
1756964, 398
862. 37
IP-89
858727, 085
1757242. 918
862. 07
IP-47
858478. 555
1756926, 281
861. 21
IP-92
856283. 266
17 . 252
671. 61
IP-49
8585171350
1756967.920
862.01
-
1756767. 38
873
IP-50
14
1757006. 856
862. 42
-
IP-51
7.88
1757009. 496
862. 38
P-97
58312. 542
1756881 579
870. 57
IP-53
858549. BO
1756945. 732
861.69
IP-98
858338. 245
1756879. 082
870, 74
IP-54
858591, 868
1756931. 842
861.61
-
IP-55
850591, 435
1756971. 605
861.91
-
IP-56
85EI591I 187
1757011.680
862.32
-
IP-57
858630. 352
1737011.979
862.24
-
IP-58
858630. 466
1756972. 253
861.88
-
IP-59
858633. 33EI
1756933.233
861.44
-
IP-59.5
056650. 463
1756940. 553
661.36
TP-671E
958770,
IP-60
858669, 130
1757013. U41
862.38
-
IP-60. 5NV
856688. 434
1756991. 720
861.92
IP-DMP4E
85869 .4 5
1757094. 759
862, 56
IP-61
858670. 529
1756973, 256
861. 80
IP-DMP4N
856707�511 1757088. 585
862, 41
IP-62
858673. 186
1756933829
661.54
1P-➢MP4S
IP-62.5
858695. 434
1756942. 766
861. 18
IP-DNP4V
IP-63
858713. 694
1756947. 935
861, 74
IP-DM-BN
1P-DV-BS
IP-64
858709.711
1756974.088
861.71
IP-65
858707. 290
1757013, 858
862. 36
IP-DW13E
IP-67
858769. 603
17570001 995
862, 64
IP-➢W13V
1757155. 146
IP-68I
858747. 279
1756975. 726
862. 16
IP-RAMPN/68E
858745, 404
1756997. 761
862, 38
- -
44,
0
IP-69
85669L 166
1757034. 114
862. 44
IP-LMP-2N
R5AP99,1159
1756819, 074
112-70
858732. 777
1757035. 219
862. 28
IP-MW-17N
858632, 904
1756961. 141
861 0
IP-72
838690, 3B2
1757073, 432
862. 57
IP-MV-17S
858620. 516
1756960. 467
861,70
IP-73
858730, 041
1757075. 437
862, 06
IP-MV22N
B 0743.1331
1 9B4
862, 05
IP-74
858769. 063
1 1757077, 260
86L 85
IP-MV22S
85 733.235
1757136. 451
BfiR. 14
ASPHALT PAVEMENT
Yw-11
0-
SLS WAREHOUSE BUILDING
NW-20
LEGEND
.
W
{
IP-BORING
MONITORING WELL
.
HVOP
®
SLE
•
NW
aIW
O
ON
•
SYMP
EW
PT
`1L
UTILITY POLE
LIGHT POLE
❑
INLET
®
DRAINAGE MANHOLE
35 CLEANOUT
WATER VALVE
FIRE HYDRANT
0
EMSTING IRON RPE
®
SEWER MANHOLE
GAS VALVE
[]�
WATER METER
EDS
END OF SGNAL
CLF
CHAIN LINK FENCE
-
ElECIWC LINE
- -
WATER LINE
- -
GAS 1111E
-
TELEPHONE UNE
GRAPHIC SCALE
w r r
(mmrl
I I-h - 40 K

o po�E
F�p,G
BUILDING
o X%RMER
�1 CE AST LOCATION
BUILDING
BUILDING
a
GP-7-10-01-1(10-11') `
72- 1t GP-7-10-01-2(8-1
J GP-7-10-01-3(10-12')
BUILDING f F p P�E�1S
.,SID 0
ROLLINGS RO AO
\\ FORMER GASOLINE
UST LOCATION
,
\
,
\ - .
\
,
\ ya
\
\
�IT.
\
T
,
\
\ c
\ o
\ -7L
\
\\\ E
,
9n
o,k
on
BUILDING
\ PAVE
\
\
\
A
GRAPHIC SCALE
20 9 10 20 40
( IN FEET )
Q
ASPHALT PAVEMENT
LEGEND
Q GEOPROBE POINT
II
IT CORPORATIr OF
NORTH CAROLINA, INC.
lY��d 71rII'6to�
2200 GATEWAY CENTRE BLVD.
SUITE 205
MORRIWLLE, NC 27560 _
[phone]
OEOPROBE
SOIL SAMPLE
LOCATION MAP
JULY 10, 2001
W.P. BALLARD PROPERTY
LOCATION:
GREENSBORO. NC
DESIGNED By. DETAILED Ely: CHECKED BY:
DEE RHW -
DRAWING DATE: ACAD ►ILE:
4/26/01 '7535GEOP
PRDJM NO., NOTESt
107535
FIGURE 7

RATER MOMS
MW-7
® M -14
(867.12)
S G AND TREES r,a.Vry
LM1t
(865.65 & R AND
R HYORYHYDRANTT AND ND VALVE
(854.22� MW o
W—� BACK GC W
BUILDING O Q, Q•/r 852.11) FACE OF (TTPIcu) GAINING YIAtl.
(864.11) / BUILDING _ DW-13
LiF BUILD W-14� J
fff
r 3.77) c9 •
N OR TAN W'Z iy Ab , DW_8 pMP_ BMW-4
B BUILDING O
(8 .78) MCI 4 yC ASPHALT AVEMENT /
BUILDINGj. (862.67 ' M� 1j aT AND -NCRETE
O
(864.96 v+ a $,� ASPHALT PAVOA (850.30) DW-15 E
J HIGH VOLTAGE &
PAVE DM - MIN GENERATOR INSIDE
b (857.88� /-
T (859 .9 D _5 7 (836.82)
�Zg t4 fi P_z
a1
�9 W,15 8 (849.59 r o
-L !T
oQ (851. 0) _
(85 .26) BUILDING N
❑ MW-21
(857.30)
T
DW-12 '
ASPHALT PAVEUENT LMP_1 (855.87) 851'225) BUILDING
a
® LMP_ D �®` TELEPHONE
LHONE MANHOLE
\ (856.52) ? 7
A
• \ BM ® MPlWO
a�
\ I _ I
/ I
LINE
I T 'CAL).
OAS C
If ffcmnmTlm
®A11f=bwaflLorrGm p
If - _ - 22GO GATEWAY CENTRE BLVD..
MORRISVILLE, NO 27500 (BIG) 407-2227
I GROUNDWATER ELEVATION
I LEGEND CONTOUR MAP
AUGUST 20, 2001
MONITORING YELL
(852.11) GROUNDWATER ELEVATION (FT) n
`b p REINFORCED CONCRETE PIPE SITE:
�,\ I (NG) NOT GAUGED ,� UTILITY POLE / W.P. 9ALLARED PROPERTY
GROUNDWATER ELEVATION CONTOUR } LIGHT POLE
I ❑ INLET LOCATION:
GREENSBORQ NC
NOTES:
HORIZONTAL DATUM IS NAD '83. ® DRAINAGE MANHOLE DESIGNED GYE DETAILED BY: CHECKED BY:
VERTICAL DATUM IS NGVD '29.
THIS IS NOT A BOUNDARY SURVEY. wv
I Ss cLEEwouT DEE RHW
NOT FOR RECORDATION. I D4 WATER VALr DRAVANG 0%1TEE 0/Ot AGAD F73
5.3G801
MAPPING SCALE : 1 INCH = 80 FEET.
1
MAPPING CONTOUR INTERVAL SHOWN HEREON 2 FEET, I � FIRE HYDRANT
GRAPHIC SCALE PROJECT 75 NOTES:
PROPERTY LINE FROM PLAN ENTITLED "ALTA/AGSM LAND ( Q EXISTING IRON PIPE
TITLE SURVEY FOR: GREENSBORO D.C.. PARTNERS, LTD.', \ 80 0 BO 120 107535
DATED 5/12/95 PREPARED BY ROBERT E. WILSON. INC. \ SEWER MANHOLE
\ ( IN FEET) GAS VALVE FIGURE 8

WATER METERS
(29)
® I\ �`\
(679 ,`\ GRASS AND TREES ltldr
111 I `\ \ \FEN
RETAINING WALL ANDS
(0�I.0) FIRE HYDRANT ANO VALVE
(325) 1 1 `� ` `- - --- - 0--------- ----- - --
BUILDING `. O `\ q---- 50D------- -- --- -- _ ^—_ BACK DI' CURB (T»IDAL7 `.�, WALL °
------ ----
i---------------1.000- ..1
---------------------------- ` `. GATE
Ile L;AC/ (126,116) 1 �`� O �W�13 p``� o `\ ° ❑
i Lai " / I -3 BUILDING . `\ \\ \\ ®
i
I Y/ M
Aa • 1 — — — — — d &4W-22 � ``\ \� `. DW-14
j11SQiA( TAN 1` v pw,3 A 7`�57D rods` ��`. �_8 OMP_4 (1,970) \�` \`I
MW,A Q�N' 1 :.a* BUILDING
BUILDING ` —.` \ OF pA ASPHALT PAVEMENT
IASRIALT PAVFl1EHT M1,1,`77 1 ° AND CONCRETE
R J ♦♦ '1 \� �0 16,882I / 11J' (3,115) i 1 DW-15 HIGH fIN•
PAYE / I i 1
I 111 / / 1 O GENERATOR
TDR INSIDE
70,0
\ \\ �� `� .� DW-5 7 O t T.
000-- MW_15* - 6 -- MW-78 - o
`---- - —---------- ' i 1
\4 (0.0) `� BUILDING (j03)� �� (940)e �,i 93)1
`.`. (971) 1 I ' '
41
®MW-27 it OUP-----------------------
0
DIN
\ 0
P SLED
a /\78) BUILDING
\ ASPHALT PAVEIIA(T �/� MITI
s ®(19 4p-1 _ �MP324) _ OW �`12 ---_- -
\ LMP�1 `2 srAwy G 1� - - - ------
\ _ MW-20
IA R
WALL
\ bQ
\ 6�
PROPER_ E (TYPIC 1
TY ONE I
AL)OAS PIPE
` RETAhpWC .
GRAVID. /
I — I
o / LEGEND
II (293) TOTAL VOC CONCENTRATION (ug/L)
II ---500---- TOTAL VOC CONCENTRATION CONTOUR (ug/L)
1 /
I MONITORING WELL /
REINFORCED CONCRETE PIPE /
UTILITY POLE
I LIGHT POLE
NOTES: ❑ INLET
HORIZONTAL DATUM IS NAD '83.
VERTICAL DATUM IS NGVD '29. I ® DRAINAGE MANHOLE
THIS IS NOT A BOUNDARY SURVEY. GRAPHIC SCALE ss cEANDur
NOT FOR RECORDATION. I
MAPPING SCALE : 1 INCH = 60 FEET. / 60 0 30 60 0 120 pQ WATER VALVE
MAPPING CONTOUR INTERVAL SHOWN HEREON = 2 FEET.
PROPERTY LINE FROM PLAN ENTITLED "ALTA/ACSM LAND \4 FIRE HYDRANT I I
TITLE SURVEY FOR: GREENSBORO D.C. PARTNERS, LTD.", \ ( IN FEET) 0 EIUSTING IRON PIPE
DATED 5/12/95 PREPARED BY ROBERT E. WILSON, INC. \ ® SEWER MANHOLE
\ cv
NA CAS VALVE
12
TELEPHONE MANHOLE

WATER METERS
MW-7
® N®A _
CRASS AND TREES — — 7 rMA1N �(
IETAIMING WALL AND
(62,069) -- FIRE HYDRANT AND VALVE l�
\ -
/ / I -LANCE\ \ T% e ff i•URB (7WICALJ ryD WI'u
(206) //� WA LL(45856\� I1 -------__ — �( 79)'
RUI d MTH AGE N ` 11 ��0- ' 4�9 NP 0 0) _ `�\\`�\ DATEr c r / 0 — — - 22
• 1 11 1 I D) p00-- „� s) `.----------------- 0�(571)
BUILDING -s \ � / •(0.0) �� \ \
`\ A FaPHALT PAV�INEMT
�D „ .8
N0 MW 1 x 09PN r` (4,aeo) Yif i 1 i \\\ � op
CONCRET� i
(150)� 1` , • .l.7,/ ♦�,, ASALT PAVEMENT j /
-26
P0,3,AGS p C �700p / I �10 , \\� 1 N� • �.��' �./ i \\�--_..— / WW-23 HIGH VOLTAGE k
(1,935) .AE' ' ' PAVE I • ' �/ / om 10,
GENERATOR IN90E
\ ♦`1 `I I -.o l a 455). ice.
rc
id
\a G 1 1 1 676,940) I 1 DYP,2 / mu A' MW-21
\ VNr® 1 1 1 1 1 1 1(1.530)
4` 1 1 � eJLo�Ic np•-+7 1 ; HN>rAa f � � �a O
- 2,0° �_ ; /ll
�`20,000 f
BUILDING
\ ASPHALT PAVELE7IT
0
NOTES:
HORIZONTAL DATUM IS NA4 '83.
VERTICAL DATUM IS NGVD 29.
THIS IS NOT A BOUNDARY SURVEY.
NOT FOR RECORDATION.
MAPPING SCALE : 1 INCH = 60 FEET.
MAPPING CONTOUR INTERVAL SHOWN HEREON = 2 FEET.
PROPERTY LINE FROM PLAN ENTITLED -ALTA/ACSM LAND
TITLE SURVEY FOR: GREENSBORO D.C. PARTNERS, LTD.",
DATED 5/12/95 PREPARED BY ROBERT E. WILSON, INC
1 T 2 97Ap5 ,Y, (22 )70[W.I��
MW-20
m
IE
lo
12TELEPHONE MANHOLE
I —
(TYPICAL)
/ GAS; PIPE Rk7AWING
OR It
r /
LEGEND
(479.00) TOTAL VOC CONCENTRATION (ug/L) ® MONITORING WELL /
/ --- 500---- TOTAL VOC CONCENTRATION CONTOUR (ug/L) n REINFORCED CONCRETE PIPE /
UTILITY POLE /
(ND) NOT DETECTED LIGHT POLE /
❑ INLET
\•�\ GRAPHIC SCALE
30 a0 120 240
( IN FEET )
\
®
DRAINAGE MANHOLE
SS CLEANOUT
w
Dd
WATER VALVE
FIRE HYDRANT
0
EXISTING IRON PIPE
G
SEWER MANHOLE
DV
I�
W
OAS VALVE

WATER MEWS
(29)
MW-7®--------------- __
4► 1 / A/ifi . (679 ` �I GRASS AND TREES
�ATAINING WALL
II�// ' 1 ��� ♦ _ ` I I �(�0.U) RRETRFRN/T AND VALVE
(325) T j,%E /4 �`♦♦`♦♦ \ �w==/ ——0'-------- — — — — — — --f
----- 4----------- ----- BAaa nw
---BIALONG O
��.
__aAu��u.T • 3 - - d \\ MW-22 \ �♦ `\ 'QW-14 `\
II I pW- ®
570) p�`. i �`. `� ow-8 DMP_ (1,9701\\ \
-'MW,
euuDlNcT�` • �` i 4PHALT PAVEMENT
IA�HALTPArnwrt M{►tl7 i 1 t ° 'PND CONCRETE I
L i ♦` \ ♦ — �� I �0 16,882/`t t 11j 3y,115) �,� 11 , T DW-15� HIGHKxrncz r
� \♦�\\ ��; '' �� ��1 PAVE / + 'may 1 / I I GENERATOR INSDE
a 'K\ ' ♦ .' / / i DMP-3 1 / / 1 MW-23 •
J.
��\� 4M`. ♦` p ---°-----------"'-- i .iM—21
a%Cs (40�(940) (0.0)
� o
(293)
WW97•`
VOMP_1 \`\ - ---- J.
DW
\ p' ' `ALT PAVEM4(T `� �_ �� �� MW _ �.�
14 •
\ AETAp/p,G M
ALL
\ Yr
d'
\
\ M® If _ ` OPERTY E
LIN �
— _(T�'ICAQ
1 —OMN
GRAVEL OAS G .
$ 1 LEGEND
(293) TOTAL VOC CONCENTRATION (ug/L)
---500---- TOTAL VOC CONCENTRATION CONTOUR (ug/L) /
(AUGUST, 2001) /
-500.00 OTAL VOC C NCENTRATION CONTOUR (ug/L) /
1 MARCH, 2001) /
p i ® l
�.\ I MONITORING WELL /
REINFORCED CONCRETE PPE /
r a, IITILTTY PCLE
' IGHT POLE
NOTES: ❑ INLET
HORIZONTAL DATUM IS NAD '83.
VERTICAL DATUM IS NGVD '29. ® DRAINAGE MANHOLE
THIS IS NOT A BOUNDARY SURVEY.
NOT FOR RECORDATION. GRAPHIC SCALE ss aEANDur
MAPPNG SCALE : 1 INCH = 60 FEET. I 60 0 30 60 a 120 pQ WATER VALVE
MAPPING CONTOUR INTERVAL SHOWN HEREON 2 FEET.
PROPERTY LINE FROM PLAN ENTITLED -ALTA/ACSM LAND \( FlRE HYDRANT I I
TITLE SURVEY FOR: GREENSBORO D.C. PARTNERS, LTD.', \ ( IN FEET) 0 EXISTING IRON PIPE
DATED 5/12/95 PREPARED BY ROBERT E. WILSON, INC. ® SEWER MANHOLE
\ cV
IA OAS VALVE
12
TELEPHONE MANHOLE

---- _MUCK METERS
\ I I I I
7'
� ROAD
N®A
45 85s
AGE T N 1 S
I
j1
4 i 0)
!
BUILDING • C--
sf
AVALT PAVEMENT
{� \
\\0�00 //ri/wr-� (1,935) ��pr-� IA�c
%
NN
\ \ I •
\� \\ \ v 44 I 11 / 76,940 I 11 DEMLA\ ,1°.
1(4 5
\ -20,000',• I /
\
Q`.♦,IALT+AVEl1ENT
\
\
\
—W
NOTES:
HORIZONTAL DATUM IS NAD '83.
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 D.C. PARTNERS, LTD.',
DATED 5/12/95 PREPARED BY ROBERT E. WILSON, INC
\/\ \ GRAPHIC SCALE
60 0 30 60 120 240
( IN FEET )
\
/
GRASS AND
TREES
\
WA
9RLL
FIRE N1ANT WALL
IRE HYDRANT
— YM-"
__ `_----- --- ---- 4AGIr OL• CURB (TYPICAL) — — \
----------------- (l7s)y�lA n- ��---��-
- Ak
ASPHALT PA E'1OENT"\
ANQ, CONCRET \\
YM`7 — —-------- —//
N
YW-70
BUILDING
GATE
161
ER
WW-23 HIGH VOLTAGE h
® GENERATOR INSIDE
® 7' C •----7
W-12
•
TELEPHONE MANHOLE
r�
2
TAINING ALL
PROPERTY
_LINE (T�ICAL� e[T
/ GAS 'VNINC y.
GRAVEL _
f
I /
f /
I (479.00) TOTAL VOC CONCENTRATION (ug/L) LEGEND /
f ---500.--. TOTAL VOC CONCENTRATION CONTOUR (ug/L) ® MONITORING WELL /
I (AUGUST, 2001) n REINFORCED CONCRETE PIPE /
--laoaoo--- TOTAL VOC CONCENTRATION CONTOUR (ug/L) `a, UTIUTY POLE
T'�Y�
(MARCH, 2001) Y LIGHT POLE /
f ❑ INLET
(ND) NOT DETECTED ® DRAINAGE MANHOLE
'I
0
SS CLEANOUT
Dd
WATER VALVE
V
FIRE HYDRANT
Q
EXISTING IRON PIPE
IS
SEWER MANHOLE
ov
W GAS VALVE

250,000
200,000 +
z0 150,000
H
Q
Z
W
U
Z
v 100,000
O
80%
32%
FIGURE 13
COMPARISON OF PRE- AND POST -INJECTION TOTAL VOCS IN GROUNDWATER
INJECTION ZONE SHALLOW MONITORING WELLS
WP BALLARD AND DOWNGRADIENT PROPERTIES, GREENSBORO, NORTH CAROLINA
-40% -- --
■ PRE-INJ Total VOCs 03/22/00
■ POST-INJ Total VOCs 06/23/00
❑ POST-INJ Total VOCs 09/06/00
❑ POST-INJ Total VOCs 03/06/01
1 % ❑ POST-INJ Total VOCs 08/22/01
19% -602%
87% 77%
83%
50,000 - ----
25% 38%
35%
I N4
MW-1 MW-2
-207% 7%
244%
1 76%
1 % 28%
_1% I
-44%
I_.-840k__-
MW-3 MW-4 MW-5 MW-6 MW-10 PT-3S PT-4S
WELL NUMBER
51%
-21 % 1
OWN
PT-5S SVE-8
88%
SVE-9

120,000
100,000
80,000
Z
O
Z 60,000
w
U
Z
0
U
p 40,000
20,000
0
FIGURE 14
COMPARISON OF PRE -AND POST INJECTION TOTAL VOCS IN GROUNDWATER
INJECTION ZONE DEEP MONITORING WELLS
W. P. BALLARD AND DOWNGRADIENT PROPERTIES, GREENSBORO, NORTH CAROLINA
■ PRE-INJ Total VOCs 03/22/00
18%
34% ■ POST-INJ Total VOCs 06/23/00
❑ POST-INJ Total VOCs 09/06/00
58% ❑ POST-INJ Total VOCs 03/06/01
■ POST- INJ Total VOCs 08/22/01
15% 58%
99% 100%
100% 69%
629/ 1 1 1
55%
20%
12%
-66%
8%
47%
71%
92%
-32%
-22% 14%
W
"'y I I I I [ _r
DW-1 DW-2 DW-3 DW-4 BMW-1 BMW-2 PT-1D PT-2D PT-3D PT-4D PT-5D HVDP-13 HVDP-14
WELL NUMBER

7,000 -1
. mv
5,000
z
0 4,000
Q
z
w
U
zz 3,000
U
U
O
1,000
C
FIGURE 15
COMPARISON OF TOTAL VOCs IN SHALLOW GROUNDWATERMONITORING WELLS
PRE- AND POST- PHASE I FULL SCALE ISCO USING NaMn04
WP BALLARD AND DOWNGRADIENT PROPERTIES, GREENSBORO, NORTH CAROLINA
MW-12 MW-15 MW-17
MW-18 MW-22 LMP-1 LMP-2
WELL NUMBER

FIGURE 16
COMPARISON OF TOTAL VOCs IN DEEP GROUNDWATER MONITORING WELLS
PRE- AND POST- PHASE I FULL SCALE ISCO USING NaMn04
WP BALLARD AND DOWNGRADIENT PROPERTIES, GREENSBORO, NORTH CAROLINA
5,000
4,500
4,000
3,500
vs
ZO
3,000
z
2,500
w
U
Z
0
2,000
U
O
>
1,500
1,000
500
51%
DW-8
■ PRE-INJ Total V
■ POST-INJ Total .
100%
DW-13 DMP-1
WELL NUMBER
DMP-3 DMP-4

IT Corporation oPNorth Carolina, Inc.
A b/cmhcr of The 17' 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'
883.10
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'
872.10
MW-16
2"
PVC
35'
0-25'
25-35'
NS
Destroyed during construction
MW-17
2"
PVC
35'
0-25'
25-35'
881.43
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'
879.80
MW-28
1"
PVC
35'
0-25'
25-35'
881.23
LMP-1
2"
PVC
35'
0-25'
25-35'
873.50
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'
0-45' / 0-48.5'
48.5-63.5'
872.80
DW-6
2"
PVC
63.5'
0-45' / 0-48.5'
48.5-63.5'
NS
Destroyed during construction
DW-7
2"
PVC
63.5'
0-45' / 0-48.5'
48.5-63.5'
862.17
DW-8
2"
PVC
63.5'
0-45' / 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'
0-45'/0-50'
50-60'
872.13
DMP-3
2"
PVC
57'
0-4070-47'
47-57'
862.18
DMP-4
2"
PVC
64'
0-4170-49'
49-64'
862.25
BMW-1
6" / 2"
G.S./PVC
150'
0-12370-130'
130-150'
882.45??
BMW-2
6" / 2"
G.S./PVC
115'
0-90'/0-95'
95-115'
882.97??
BMW-3
6" / 2"
G.S./PVC
143'
0-11070-123'
123-143'
862.12??
BMW-4
6" / 2"
G.S./PVC
100'
0-7170-80'
80-100'
859.81??
Table 1.xls Page 1 of 3 Revised: 11/28/01

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
SVMP-1
2"
PVC
12'
0-2'
2-12'
883.63
Soil vapor monitoring point
SVMP-2
2"
PVC
12'
0-2'
2-12'
883.79
Soil vapor monitoring point
SVMP-3
2"
PVC
12'
0-2'
2-12'
883.83
Soil vapor monitoring point
SVMP-4
2"
PVC
12'
0-2'
2-12'
882.90
Soil vapor monitoring point
SVMP-5
2"
PVC
12'
0-2'
2-12'
883.37
Soil vapor monitoring point
SVMP-6
2"
PVC
12'
0-2'
2-12'
883.44
Soil vapor monitoring point
SVMP-7
2"
PVC
12'
0-2'
2-12'
883.04
Soil vapor monitoring point
SVMP-8
2"
PVC
12'
0-2'
2-12'
883.03
Soil vapor monitoring point
SVMP-9
2"
PVC
12'
0-2'
2-12'
882.75
Soil vapor monitoring point
SVMP-10
2"
PVC
12'
0-2'
2-12'
882.44
Soil vapor monitoring point
SVMP-11
2"
PVC
12'
0-2'
2-12'
882.44
Soil vapor monitoring point
SVMP-12
2"
PVC
12'
0-2'
2-12'
882.71
Soil vapor monitoring point
PT-1S
1"
PVC
25'
0-5'
5-25,
882.69
Wells installed for 9/97 pilot test
PT-2S
1"
PVC
22.2'
0-2.2'
2.2-22.2'
882.95
Wells installed for 9/97 pilot test
PT-3S
1"
PVC
25'
0-5'
5-25'
882.59
Wells installed for 9/97 pilot test
PT-4S
1"
PVC
25'
0-5'
5-25'
882.21
Wells installed for 9/97 pilot test
PT-5S
1"
PVC
25'
0-5'
5-25'
882.97
Wells installed for 9/97 pilot test
PT-1 D
2"
PVC
65'
0-50'
50-65'
882.70
Wells installed for 9/97 pilot test
PT-21D
2"
PVC
65'
0-50'
50-65'
882.95
Wells installed for 9/97 pilot test
PT-31D
2"
PVC
65'
0-50,
50-65'
882.66
Wells installed for 9/97 pilot test
PT-41D
2"
PVC
65'
0-50,
50-65'
882.41
Wells installed for 9/97 pilot test
PT-51D
2"
PVC
65'
0-50'
50-65'
882.96
Wells installed for 9/97 pilot test
HVDP-1
4"
PVC/S.S.
75'
0-35'
35-75'
881.84
Groundwater/soil vapor extraction well, Header 1
HVDP-2
4"
PVC/S.S.
75'
0-35'
35-75'
882.04
Groundwater/soil vapor extraction well, Header 1
HVDP-3
4"
PVC/S.S.
75'
0-35'
35-75'
881.13
Groundwater/soil vapor extraction well, Header 1
HVDP-4
4"
PVC/S.S.
75'
0-35'
35-75'
881.37
Groundwater/soil vapor extraction well, Header 1
HVDP-5
4"
PVC/S.S.
75'
0-35'
35-75'
880.85
Groundwater/soil vapor extraction well, Header 1
HVDP-6
4"
PVC/S.S.
75'
0-35'
35-75'
881.92
Groundwater/soil vapor extraction well, Header 2
HVDP-7
4"
PVC/S.S.
75'
0-35'
35-75'
882.21
Groundwater/soil vapor extraction well, Header 2
HVDP-8
4"
PVC/S.S.
75'
0-35'
35-75'
882.40
Groundwater/soil vapor extraction well, Header 2
HVDP-9
4"
PVC/S.S.
75'
0-35'
35-75'
882.63
Groundwater/soil vapor extraction well, Header 2
HVDP-10
4"
PVC/S.S.
75'
0-35'
35-75'
881.65
Groundwater/soil vapor extraction well, Header 3
HVDP-11
4"
PVC/S.S.
75'
0-35'
35-75'
881.41
Groundwater/soil vapor extraction well, Header 3
HVDP-12
4"
PVC/S.S.
75'
0-35'
35-75'
881.98
Groundwater/soil vapor extraction well, Header 3
HVDP-13 (EW-3)
4"
PVC
65,
0-50'
50-65'
882.81
Groundwater/soil vapor extraction well, Header 3
HVDP-14 (EW-1)
4"
PVC
64'
0-49'
49-64'
882.57
Groundwater/soil vapor extraction well, Header 3
HVDP-15
4"
PVC/S.S.
75'
0-35'
35-75'
881.24
Groundwater/soil vapor extraction well, Header 3
HVDP-16
4"
PVC/S.S.
75'
0-35'
35-75'
879.73
Groundwater/soil vapor extraction well, Header 4
HVDP-17
4"
PVC/S.S.
75'
0-35'
35-75'
878.89
Groundwater/soil vapor extraction well, Header 4
HVDP-18
4"
PVC/S.S.
75'
0-35'
35-75'
873.99
Groundwater/soil vapor extraction well, Header 4
HVDP-19
4"
PVC/S.S.
75'
0-35'
35-75'
875.83
Groundwater/soil vapor extraction well, Header 4
HVDP-20
4"
PVC/S.S.
75'
0-35'
35-75'
872.84
Groundwater/soil vapor extraction well, Header 4
HVDP-21
4"
PVC/S.S.
75'
0-35'
35-75'
871.23
Groundwater/soil vapor extraction well, Header 4
HVDP-22
4"
PVC/S.S.
75'
0-35'
35-75'
870.56
Groundwater/soil vapor extraction well, Header 4
HVDP-23
4"
PVC/S.S.
74'
0-34'
34-74'
871.70
Groundwater/soil vapor extraction well, Header 5
HVDP-24
4"
PVC/S.S.
75'
0-35'
35-75'
872.56
Groundwater/soil vapor extraction well, Header 5
HVDP-25
4"
PVC/S.S.
75'
0-35'
35-75'
872.37
Groundwater/soil vapor extraction well, Header 5
HVDP-26
4"
PVC/S.S.
75'
0-35'
35-75'
873.48
Groundwater/soil vapor extraction well, Header 5
HVDP-27
4"
PVC/S.S.
75'
0-35'
35-75'
875.39
Groundwater/soil vapor extraction well, Header 5
HVDP-28
4"
PVC/S.S.
67'
0-27'
27-67'
876.17
Groundwater/soil vapor extraction well, Header 5
HVDP-29
4"
PVC/S.S.
75'
0-35'
35-75'
878.38
Groundwater/soil vapor extraction well, Header 5
Table t.xls Page 2 of 3 Revised: 11/28/011

Table 1
Well Construction Summmary
W.P. Ballard and Downgradient Properties
Greensboro, North Carolina
Well
Identification
Casing
I Diameter
Well
Material
Total
Depth
Cased
Interval
Screened
Interval
Top of Casing
Elevation
Notes
SVE-1
4"
PVC
40'
0-7'
7-40'
881.40
Soil vapor extraction well, Header A
SVE-2
4"
PVC
40'
0-7'
7-40'
881.97
Soil vapor extraction well, Header A
SVE-3
4"
PVC
40'
0-7'
7-40'
881.96
Soil vapor extraction well, Header A
SVE-4
4"
PVC
40'
0-7'
7-40'
881.21
Soil vapor extraction well, Header A
SVE-5
4"
PVC
40'
0-7'
7-40'
881.98
Soil vapor extraction well, Header A
SVE-6
4"
PVC
40'
0-7'
7-40'
882.67
Soil vapor extraction well, Header A
SVE-7
4"
PVC
40'
0-7'
7-40'
883.39
Soil vapor extraction well, Header A
SVE-8 (EW-4)
4"
PVC
40'
0-7'
7-40'
881.94
Soil vapor extraction well, Header B
SVE-9 (EW-2)
4"
PVC
40'
0-7'
7-40'
881.54
Soil vapor extraction well, Header B
SVE-10
4"
PVC
40'
0-7'
7-40'
879.25
Soil vapor extraction well, Header B
SVE-11
4"
PVC
40'
0-7'
7-40'
875.99
Soil vapor extraction well, Header B
SVE-12
4"
PVC
40'
0-7'
7-40'
878.56
Soil vapor extraction well, Header B
SVE-13
4"
PVC
40'
0-7'
7-40'
876.26
Soil vapor extraction well, Header B
SVE-14
4"
PVC
40'
0-7'
7-40'
881.51
Soil vapor extraction well, Header B
AIW-1
2"
PVC
65'
0-55'
55-65'
881.51
Air injection wells, Common Header
AIW-2
2"
PVC
65'
0-55'
55-65'
881.65
Air injection wells, Common Header
AIW-3
2"
PVC
65'
0-55'
55-65'
882.47
Air injection wells, Common Header
AIW-4
2"
PVC
65'
0-55'
55-65'
881.30
Air injection wells, Common Header
AIW-5
2"
PVC
65'
0-55'
55-65'
881.64
Air injection wells, Common Header
AIW-6
2"
PVC
65'
0-55'
55-65'
877.81
Air injection wells, Common Header
AIW-7
2"
PVC
65'
0-55'
55-65'
871.55
Air injection wells, Common Header
AIW-8
2"
PVC
65'
0-55'
55-65'
873.20
Air injection wells, Common Header
AIW-9
2"
PVC 1
65'
0-55'
55-65'
875.32
Air injection wells, Common Header
Notes: PVC denote poly vinyl chloride
G.S. denotes galvanized steel
S.S. denotes stainless steel
Table 1.xls Page 3 of 3 Revised: 11 /28/01

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-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
63
0.91
21.6
268
NG
03/06/01
881.03
10.18
870.85
5.19
62
1.35
16.2
278
08/20/01
881.03
17.25
863.78,
4.99
52
1.35
22.9
326
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
06/22/00
882.43
12.40
870.03
6.40
25.00
4.50
19.8
132
Cloudy
09/07/00
882.43
9.42
873.01
6.40
130
1.05
22.6
152
NG
03/06/01
882.43
10.50
871.93
6.61
95
0.48
16.8
62
08/20/01
882.43
18.21
864.22
6.94
122
0.66
23.5
318
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
06/22/00
883.10
13.57
869.53
6.16
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
03/06/01
883.10
14.02
869.08
5.32
57
5.63
20.2
249
08/20/01
883.10
18.99
864.11
6.20
188
6.48
25.8
316
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
470.14
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
06/22/00
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
356
2.89
24.1
115
Brownish
03/06/01
882.33
13.05
869428
6.11
333
1.49
20.9
32
08/20/01
882.33
19.66
862.67
6.23
143
0.71
23.1
128
Table 2.xls 1 of 14 Revised 11/28/01

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-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
06/22/00
883.47
15.75
867.72
5.18
3.00
6.20
24.6
246
Gray, Silty
09/07/00
883.47
16.08
867.39
4.98
2.5
6.04
22.5
258
NG
03/06/01
883.47
17.05
866.42
5.26
29
7.74
19.9
248
08/20/01
883.47
19.70
863.77
6.05
20
4.41
28.2
429
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
08/20/01
884.33
18.68
865.65
5.19
32
3.70
24.7
368
Very Silty
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
06/22/00
882.59
NG
NG
NG
NG
NG
NG
NG
NG
09/06/00
882.59
7.00
875.59
4.90
58
0.78
20.4
232
Brown -Orange
08/20/01
882.59
15.47
867.12
5.00
55
0.39
21.2
421
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
06/22/00
883.03
NG
NG
NG
NG
NG
NG
NG
NG
09/06/00
883.03
11.52
871.51
4.30
46
2.07
23.6
336
NG
08/20/01
883.03
18.07
864.96
NG
NG
NG
NG
NG
MW-9
11/30/98
880.43
17.84
862.59
6.73
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
06/22/00
880.43
NG
NG
NG
NG
NG
NG
NG
NG
09/06/00
880.43
11.75
868.68
4.77,
38
3.05
24.5
236
NG
08/20/01
880.43
20.17
860.26
4.99
40
2.95
25.6
404
Table 2.xls 2 of 14 Revised 11/28/01

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-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
06/22/00
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
03/06/01
882.42
19.31
863.11
5.11
22
9.63
16.5
227
08/20/01
882.42
24.54
857.88
4.89
17
6.53
23.2
377
Pinkish/orange, Silty
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
06/22/00
874.71
NG
NG
NG
NG
NG
NG
NG
NG
09/06/00
874.71
13.45
861.26
5.14
53
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
144
3.70
17.9
162
06/22/00
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
03/06/01
862.15
9.45
852.70
6.90
150
6.22
17.7
169
08/20/01
862.15
10.90
851.25
5.50
156
2.14
27.7
491
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
168
6.40
15.9
132
06/22/00
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
08/20/01
863.77 .--
11.66
852.11
6.04
34
5.23
26.9
417
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
O6/22/00
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
Table 2.xls 3 of 14 Revised 11/28/01

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-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
41
5.84
21.3
269
06/22/00
872.10
NG
NG
NG
NG
NG
NG
NG
NG
09/06/00
872.10
14.62
857.48
5.32
65
6.39
26.9
177
Orange
03/06/01
872.10
13.86
858.24
5.42
50
7.71
19.5
208
08/20/01
872.10
20.90
851.20
6.20
24
2.66
40.7
628
Light Pinkish
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
80
8.60
20.7
153
06/22/00
861.43
NG
NG
NG
NG
NG
NG
NG
NG
09/06/00
861.43
5.40
856.03
6.52
8.6
4.90
20.1
218
NG
03/06/01
861.43
5.00
856.43
6.26
96
6.18
15.8
139
08/20/01
861.43
11.13
850.30
6.07
72
4.01
23.8
505
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
6.03
15.5
251
03/20/00
862.26
10.14
852.12
5.87
85
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
03/06/01
862.26
9.82
852.44
5.81
106
2.87
16.3
231
08/20/01
862.26
12.67
849.59
5.67
75
1.58
31.1
922
Slightly Pinkish
MW-20
11/30/98
866.15
22.65
843.60
6.30
154
NS
17.6
126
10/22/99
866.15
22.99
843.16
5.77
160
4.77
17.1
344
03/20/00
866.15
22.97
843.18
5.79
149
3.40
18.6
157
06/22/00
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
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,
560
5.00
19.5
150
06/22/00
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
Table 2.xls 4 of 14 Revised 11/28/01

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-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
102
7.59
21.5
69
Silty
03/06/01
861.83
4.45
852.38
6.62-
122
7.39
13.2
106
08/20/01
861.83
12.18
849.65
•
6.07
93
3.39
27.2
288
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
06/22/00
861.15
NG
NG
NG
NG
NG
NG
NG
NG
09/06/00
861.15
24.29
836.86
6.08
605
6.51
23.1
-98
Brown, silty
03/06/01
861.15
24.28
836.87
6.50
687
6.06
15.5
-96
08/20/01
861.15
24.33
836.82
5.84
494
0.95
24.0
151
MW-27
11/30/98
879.80
19.85
859.95
4.70
235
2.60
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
212
12.54
24.4
294
NG
03/06/01
879.80
15.85
863.95
4.97
228
5.11
20.1
618
08/20/01
879.80
22.50
857.30
4.73
250
3.06
22.5
503
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
39
6.45
24.0
215
NG
03/06/01
881.23
14.45
866.78
4.88
29
8.27
19.3
535
08/20/01
881.23
21.83
859.40
4.71
24
3.43
25.4
507
Table 2.xls 5 of 14 Revised 11/28/01

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-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
310
1.34
21.2
174
06/22/00
873.50
NG
NG
NG
NG
NG
NG
NG
NG
09/06/00
873.50
12.00
861.50
5.83
320
12.35
24.0
161
NG
03/06/01
873.50
13.10
860.40
6.19
356
1.71
20.4
148
08/20/01
873.60
16.98
856.52
6.82
263
0.38
26.8
142
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
98
5.70
23.0
144
06/22/00
871.41
NG
NG
NG
NG
NG
NG
NG
NG
09/06/00
871.41
12.33
859.08
5.53
101
2.58
23.6
207
NG
03/06/01
871.41
8.65
862.76
5.87
116
3.78
18.4
162
08/20/01
871.41
15.64
855.87
6.67
82
0.74
37.1
357
Light Pinkish
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
06/22/00
882.31
NG
NG
NG
NG
NG
NG
NG
NG
09/06/00
882.31
9.66
872.65
5.70
70
2.57
19.0
159
NG
08/20/01
882.31
34.26
848.05
NG
NG
NG
NG
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
97
2.56
18.4
134
NG
08/20/01
881.12
17.40
863.72
NG
NG
NG
NG
NG
Table 2.xis 6 of 14 Revised 11/28/01

l
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
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
03/06/01
882.59
15.90
866.69
5.84
150
4.03
19.0
506
08/20/01
882.69
19.05
863.54
6.78
140
3.00
23.6
784
Slightly Pinkish
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
499
7.43
21.3
768
Deep Purple
03/06/01
883.69
16.80
866.89
6.62
5.13
4.27
16.9
710
08/20/01
883.69
20.47
863.22
NG
NG
NG
NG
NG
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
110
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
03/06/01
872.80
6.68
866.22
6.42
124
4.71
16.9
129
08/20/01
872.80
26.26
846.54
6.09
94
1.92
35.1
460
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
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
03/06/01
862.17
1.70
860.47
6.81
209
3.95
14.3
158
08/20/01
862.17
9.68
852.49
6.53
132
2.31
29.0
473
Table 2.xls 7 of 14 Revised 11/28/01

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
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
03/06/01
861.44
3.94
857.50
6.49
94
6.06
16.6
576
08/20/01
861.44
11.17
850.27
6.13
85
4.58
23.6
794
DW-9
11/30/98
NS
16.35
NS
7.00
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
O6/22/00
861.10
NG
NG
NG
NG
NG
NG
NG
NG
09/06/00
861.10
10.56
850.54
6.21
108
6.14
19.6
102
Silty
03/06/01
861.10
6.33
854.77
6.55
129
6.13
14.6
160
08/20/01
861.10
13.25
847.85
6.43
121
3.82
20.2
362
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
184
1.90
21.9
-121
Brown, silty
03/06/01
860.06
21.55
838.51
7.00
170
4.87
17.8
44
08/20/01
860.06
23.52
836.54
6.71
161
1.19
27.9
196
Table 2.xis 8 of 14 Revised 11/28/01

- -- - - - -- -- -- -- -- - -- - - -- -- - - - - -- - - - - - - ---
Table 2.xls
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
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
06/22/00
861.20
NG
NG
NG
NG
NG
NG
NG
NG
09/06/00
861.20
24.86
836.34
6.25
140
3.69
21.9
109
Brown, silty
03/06/01
861.20
23.80
837.40
9.75
178
3.28
17.7
4
08/20/01
861.20
25.61
835.69
6.42
138
2.19
21.4
260
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
460
1.82
19.7
197
06/22/00
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
03/06/01
870.83
13.62
857.21
6.23
446
3.52
16.2
159
08/20/01
870.83
17.54
853.29
NG
NG
NG
NG
NG
Light Purple Color
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
140
3.60
19.5
170
06/22/00
872.13
NG
NG
NG .
NG
NG
NG
NG
NG
09/06/00
872.13
11.86
860.27
6.15
123
5.01
21.1
154
Brown, silty
03/06/01
872.13
12.05
860.08
6.60
147
4.83
17.2
167
08/20/01
872.13
31.84
840.29
6.40
171
1.62
25.2
101
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
06/22/00
862.18
NG
NG
NG
NG
NG
NG
NG
NG
09/06/00
862.18
7.63
854.65
6.16
10.5
5.88
22.7
145
Brown, silty
03/06/01
862.18
7.56
854.62
6.94
137
8.54
12.3
157
08/20/01
862.18
11.98
850.20
6.41
71
3.94
27.5
416
Very Silty
9of14
Revised 11/28/01

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
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
06/22/00
862.25
NG
NG
NG
NG
NG
NG
NG
NG
09/06/00
862.25
6.51
855.74
5.87
89
6.26
18.8
114
Silty
03/06/01
862.25
6.60
855.65
6.44
91
7.38
13.7
147
08/20/01
862.25
11.68
860.57
6.50
299
5.08
23.8
916
Purple Color
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
O6/22/00
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
A63
NG
03/06/01
882.45
18.55
863.90
12.01
1070
6.49
17.6
-555
08/20/01
882.45
21.48
860.97
NG
NG
NG
NG
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
03/06/01
882.97
14.45
868.52
6.49
118
2.72
17.7
-120
O8/20101
882.97
20.88
862.09
6.31
152
1.80
25.0
45
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
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
08/20/01
862.12
10.92
851.20
NG
NG
NG
NG
NG
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
06/22/00
860.08
NG
NG
NG
NG
NG
NG
NG
NG
09/06/00
860.08
22.71
837.37
7.33
246
1.90
21.5
-192
Brown, silty
03/06/01
860.08
21.38
838.70
7.92
256
0.26
16.2
-114
08/20/01
860.08
23.47
836.61
NG
NG
NG
NG
NG
Table 2.xls 10 of 14 Revised 11/28/01

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-1 S
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
PT4S
03/23/00
882.21
19.10
863.11
4.60
9.00
4.80
15.4
320
NG
06/22/00
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
6.37
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
6.48
22.4
297
NG
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
8.00
5.60
22.1
126
Slightly Cloudy
09/08/00
882.95
16.77
866.18
6.00
78
4.46
23.3
159
NG
PT-3D
03/23/00
882.66
18.24
864.42
6.90
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
PT4D
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
Table 2.xis 11 of 14 Revised 11/28/01

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-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
9/8/00
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
194
5.66
19.1
182
NG
HVDP-2
09/06/00
882.04
9.65
872.39
5.40
66
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
126
1.23
21.8
121
NG
HVDP-5
09/06/00
880.85
12.90
867.95
4.80
34
1.86
23.3
198
NG
HVDP-6
09/06/00
881.92
12.36
869.56
4.20
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
44
3.33
21.7
195
NG
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
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
Table 2.xls 12 of 14 Revised 11/28/01

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
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 J
5.48
5.1
2.98
22.1
208
NG
HVDP-16
09/06/00
879.73
15.19
864.64
5.80
123
0.63
23.5
-144
NG
HVDP-17
09/06/00
878.89
15.65
863.24
5.90
32
1.47
24.8
81
NG
HVDP-18
09/06/00
873.99
10.28
863.71
6.20
196
0.00
20.9
-3
NG
HVDP-19
09/06/00
875.83
11.27
864.56
6.00
524
0.00
22.0
67
NG
HVDP-20
09/06/00
872.84
9.70
863.14
6.00
187
0.00
19.3
41
NG
HVDP-21
09/06/00
871.23
10.21
861.02
5.70
275
0.01
23.1
113
NG
HVDP-22
09/06/00
870.56
10.65
859.91.
6.30
197
0.25
20.5
-86
Sulphur odor
HVDP-23
09/06/00
871.70
11.81
859.89
6.00
146
1.27
20.6
39
NG
HVDP-24
09/06/00
872.56
13.60
858.96
5.80
85
3.60
20.5
111
NG
HVDP-25
09/06/00
872.37
15.43
856.94
5.82
83
5.57
22.9
123
NG
HVDP-26
09/06/00
873.48
16.46
857.02
5.08
16
2.77
22.6
207
NG
HVDP-27
09/06/00
875.39
16.96
858.43
5.29
42
2.67
21.1
14
Sulphur odor
HVDP-28
09/06/00
876.17
18.29
857.88
5.17
20
5.15
22.8
174
NG
HVDP-29
09/06/00
878.38
19.69
858.69
5.29
24
8.78
21.6
195
NG
Table 2.xls 13 of 14 Revised 11/28/01
r

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
SVE-1
09/06/00
881.40
10.19
871.21
4.80
55
3.72
21.2
314
NG
SVE-2
09/06/00
881.97
11.60
870.37
4.80
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
54
4.40
21.5
304
NG
SVE-5
09/06/00
881.98
10.16
871.82
4.90
73
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
6.67
3.00
7.80
25.1
190
Cloudy
09/09/00
882.56
16.90
865.66
6.77
2.50
10.32
25.8
249
NG
SVE-10
09/06/00
879.25
14.96
864.29
4.94
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
743
6.63
23.3
183
NG
SVE-13
09/06/00
876.26
NG
NS
5.08
222
7.30
23.8
173
NG
SVE-14
09/06/00
881.51
11.40
870.11
4.77
38
3.05
24.5
236
NG
rvores: rv%.:, aenorea parameter not gauges or measurea.
NS denotes TOC elevation not surveyed.
Bold-faced indicate most recent measurements.
Table 2.xis 14 of 14 Revised 11/28/01

TABLE 3
August 2001 Groundwater Analysis Data Summary - Shallow Wells
W. P. Ballard and Downgradient Properties
Greensboro, North Carolina
Sample Location:
MW-1
MW-2
MW-3
MW-3 (Dup)
MW-4
MW-5
MW-6
MW-7
MW-9
MW-10
MW-12
MW-13
MW-15
MW-17
MW-17(Dup
MW-18
MW-22
MW-23
MW-27
MW-28
LMP-1
LMP-2
Sample Date:
8/22/01 B
8122101 B
8/22/01 B
8/22/01 B
8/23/01 B
8/22/01 B
8/22/01 B
8/22/01 B
8122101 B
8/22/01 B
8121/01 B
8/21/01 B
8/21/01 B
8/21/01 B
8/21/01 B
8/21/O1 B
8/20/01 B
8/20/01 B
8/22/01 B
8122/01 B
8/21/01 B
8/21/01 B
Analyte
NCAC 2L
Benzene (ug/L)
1.0
NA
NA
<1
<1
2.3
<1
NA
NA
NA
1.7
NA
NA
NA
NA
NA
NA
NA
NA
NA
NA
NA
NA
Ethylbenzene (ug/L)
29
NA
NA
<1
<1
1.4
<1
NA
NA
NA
<1
NA
NA
NA
NA
NA
NA
NA
NA
NA
NA
NA
NA
Methylene Chloride (ug/L)
5.0
<5.0
<1
<1
<1
<250
9.8
<5
<5
<5
<5.0
<5
<5
<50
<50
<50
<50
<250
<1.0
<5
<5
<50
<1.0
Chloroform (ug/L)
0.19
1.5
5.2
43.7
45.9
<50
<5
<1
<1
<1
5.5
<1
<1
25
55
55
<50
<50
<1.0
<1
<1
11
1.7
Chloromethane (ug/L)
none
<1.0
<1
<1
<1
<50
<1
<1
<1
<1
<1
<1
<1
<10
<50
<50
<50
<50
<1.0
<1
<1
<10
<1.0
Carbon Tetrachloride (ug/L)
0.3
<1.0
<1
4.6
5.1
<50
<1
<1
<t
<1
<1
<1
<1
<10
<50
<50
<50
<50
<1.0
<1
<1
<10
<1.0
1, 1 -Dichloroethane (ug/L)
700
<1.0
<1
<1
<1
<50
<1
9.4
1.2
<1
<1
<1
<1
<10
<50
<50
<50
<50
<1.0
<1
<1
<10
<1.0
1,2-Dichloroethane (ug/L)
0.38
<1.0
<1
<1
<1
<50
<1
4.4
<1
<1
8
<1
<1
<10
<50
<50
<50
<50
<1.0
<1
<1
<10
<1.0
1,1-Dichloroethene (ug/L)
7.0
<1.0
5.9
2.9
4.2
<50
34.9
450
2.0
<1
<1
<t
<1
<10
<50
<50
<50
<50
<1.0
1.7
<1
<10
<1.0
cis-1,2-Dichloroethene (ug/L)
70
<1.0
88
<1
<1
90
3.1
6.5
<1
<1
11.6
5.2
<1
22
165
155
<50
<50
<1.0
527
583
65
13.8
trans-1,2-Dichloroethene (ug/L)
70
<1.0
<1
2.2
3.8
<50
<1
3.7
<1
<1
<1
<1
<1
<10
<50
<50
<50
<50
<1.0
<1
<1
<10
<1.0
1,2-Dichloropropane (ug/L)
0.56
<1.0
<1
<1
<1
<50
<1
<1
<1
<1
<1
60
<1
<10
<50
<50
<50
<50
<1.0
<1
<1
595
250
Methyl tert-butyl ether (MTBE) (ug/1)
200
NA
<1
<1
<1
<50
<1
<1
<1
<1
<1
<1
<1
<10
<50
<50
<50
<50
NA
<1
<1
<1
<1.0
Trichloroethene (ug/L)
2.8
1.2
39.8
<1
<1
370
1.4
<1
<1
<1
30.6
5.2
<1
345
556
610
<50
180
<1.0
442
134
67
6.9
Tetrachloroethene (ug/L)
1
2,310
184
126,000
123,000
12,800
7,520
166
25.8
<1
16,800
7.7
<1
11
2,340
2,480
940
1 790
<1.0
<1
<1
81
51.8
1,1,2,2-Tetrachloroethane (ug/L)
none
<1.0
<1
<1
<1
<50
<1
<1
<1
<1
<1
<1
<1
<10
<50
<50
<50
<50
<1.0
<1
<1
<10
<1.0
Toluene (ug/L)
1,000
NA
NA
15.5
15.4
2.4
<1
<1
NA
NA
<1
NA
NA
NA
NA
NA
NA
NA
<1.0
NA
NA
NA
NA
1,1,1-Trich loroethane (ug/L)
200
<1.0
1.7
3
3.6
<50
<1
30.3
<1
<1
<1
<1
<1
<10
<50
<50
<50
<50
<1.0
<1
<1
<10
<1.0
1,1,2-Tdchloroethane (ug/L)
none
<1.0
<1
40.2
43
<50
1
9
<1
<1
24.4
<1
<1
<10
<50
<50
<50
=50
<1.0
<1
<1
<10
<1.0
Xylenes, Total (ug/L)
530
NA
NA
3.5 1
3.5 1
16.4 1
<1
NA
NA
NA
<1
NA
NA
NA
NA
NA
NA
NA
NA
NA
NA
NA
NA
Total VOCs Detected (ug/L)
MM
2,313
325
126,116 1
123,125 1
13,283 1
7,570 1
679
29
0
16,882
78
0
403
3,115
3,300
F 940
1,970
0
971
717
819
324
Notes: Compounds detected above the North Carolina 2L Standard are shown in bold.
B - indicates samples collected by IT Corporation o/North Carolina, Inc. (fomredy Fluor Daniel GTI, Inc.)
NA denotes compound not analyzed
Table 3.xls Page 1 of 1 Revised: 11/28/01

TABLE 4
Historical Groundwater Analytical Data Summary - Shallow Wells
W. P. Ballard and Downgradient Properties
Greensboro, North Carolina
Sample Location:
MW-1
MW-2
Sample Date:
5129/92 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
3r7/Ot B
8/22101 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
917/00 B
10/19/00 B
3/8101 B
8/22/01 B
Analyte
NCAC 2L
Benzene (ug/L)
1.0
NA
NA
NA
<100
<50
<1.0
NA
NA
NA
NA
NA
NA
<100
<1.0
<1.0
NA
<1
NA
NA
Ethylbenzene (ug/L)
29
NA
NA
NA
<100
<50
<1.0
NA
NA
NA
NA
NA
NA
<100
<1.0
<1.0
NA
<1
NA
NA
Methylene Chloride (ug/L)
5.0
<1,000
<100
<1,200
<500
<250
<5.0
<5.0
<5.0
<5.0
640
<100
<250
<500
<5.0
<5.0
<50
<5
<5.0
<1
Chloroform (ug/L)
0.19
<1,000
<100
<250
<100
<50
<1.0
<1.0
1
1.5
<200
<100
<50
<100
<1.0
<1.0
<10.0
<1
<1.0
6.2
Chloromethane (ug/L)
none
<1,000
<100
<250
<100
<50
<1.0
<1.0
<1.0
<1.0
<200
<100
<50
<100
<1.0
<1.0
<10.0
<1
<1.0
<1
Carbon Tetrachloride (ug/L)
0.3
<1,000
<100
<250
<100
<50
<1.0
<1.0
<1.0
<1.0
<200
<100
<50
<100
<1.0
<1.0
<10.0
<1
<1,0
<1
1,1-Dichloroethane (ug/L)
700
<1,000
<100
<250
<100
<50
<1.0
<1.0
<1.0
<1.0
<200
<100
<50
<100
<1.0
<1.0
<10.0
<1
<1.0
<1
1,2-Dichloroethane (ug/L)
0.38
<1,000
<100
<250
<100
<50
<1.0
<1.0
<1.0
<1.0
<200
<100
<50
<100
<1.0
<1.0
<10.0
<1
<1.0
<1
1,1-Dichloroethene (ug/L)
7.0
<1,000
<100
<250
<100
<50
<1.0
<1.0
<1.0
<1.0
<200
<100
<50
<100
<1.0
<1.0
<10.0
<1
<1.0
5.9
cis-1,2-Dichloroethene (ug/L)
70
<1,000
<100
<250
<100
<50
<1.0
<1.0
<1.0
<1.0
<200
<100
<50
<100
1,070
95.7
<10.0
<1
<1.0
88
trans-1,2-Dichloroethene (ug/L)
70
<1,000
<100
<250
<100
<50
<1.0
<1.0
<1.0
<1.0
<200
<100
<50
<100
14.4
<1.0
<10.0
<1
<1.0
<1
1,2-Dichloropropane (ug/L)
0.56
<1,000
<100
<250
<100
<50
<1.0
<1.0
<1.0
<1.0
<200
<100
<50
<100
<1.0
<1.0
<10.0
<1
<1.0
<1
Methyl tert-butyl ether (MTBE) (ug/1)
200
NA
NA
NA
NA
<50
NA
NA
NA
NA
NA
NA
NA
NA
19.3
NA
NA
<1
NA
<1
Trichloroethene (ug/L)
2.8
<1,000
<100
<250
<100
<50
6.5
3.1
2
1.2
<200
<100
<50
<100
156
66.7
<10.0
2.0
<1.0
39.8
Tetrachloroethene (ug/L)
1
33,000
8,000
18,000
12,600
3,880
3,420
2,240
680
2310
11,000
6,500
4,100
5,080
56
358
72
46
68
184
1,1,2,2-Tetrachloroethane (ug/L)
none
<1,000
<100
<250
<100
<50
<1.0
<1.0
<1.0
<1.0
<200
<100
<520
<100
<1.0
<1.0
<10.0
<1.0
<1
Toluene (ug/L)
1,000
NA
NA
NA
<100
<50
<1.0
NA
NA
NA
NA
NA
NA
<100
<1.0
<1.0
NA
NA
NA
1,1,1-Trichloroethane (ug/L)
200
<1,000
<100
<250
<100
<50
<1.0
<1.0
<1.0
<1.0
<200
<100
<50
<100
<1.0
<1.0
<10.0
<1
<1.0
1.7
1,1,2-Trichloroethane (ug/L)
none
<1,000
<100
<250
<100
<50
<1.0
<1.0
<1.0
<1.0
<200
<100
<50
<100
<1.0
<1.0
<10.0
<t
<1.0
<1
Xylenes, Total (ug/L)
NA
NA
NA
<200
<100
<2.0
NA
NA
NA
NA
NA
NA
<200
<2.0
<2.0
NA
NA
NA
Total VOCs Detected (ug/L)
RM
33,000
8,000 1
18,000
12,600
3,880 1
3.427
2,243
683
2,313
11,540
6,500
4,100 1
5,080
1,316
520
72
48
68
325
Sample Location:
MW-3
MW-4
Sample Date:
5/29/92 A
1 6/25/93 A
7/22/94 A
7l10/96 A
07/10/96 B
12/ 22198 B
1/21/99 B
10/28/99 B
3/22/00 8
9/8100 B
10/18/00 B
3/8/01 B
8/22/01 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
9/7/00 B
10/19/00 B
3/8/01 B
8/23/01 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
<1
NA
NA
NA
<100
<500
<1.0
<1,000
<1,000
NA
2.3
Ethylbenzene (ug/L)
29
NA
NA
NA
NA
NA
<100
NA
<5,000
<1.0
<5,000
<1,000
NA
<1
NA
NA
NA
<100
<500
<1.0
<1,000
<1,000
NA
1.4
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
<100
<5
<2,000
<12,000
<2,500
<500
<2,500
<5.0
<5,000
<5,000
<5.0
<250
Chloroform (ug/L)
0.19
<10,000
<5,000
<1000
<5,000
<1000
<100
<500
<5,000
9.7
<5,000
<7,000
18
43.7
<2,000
<2,500
<2,500
<100
<500
<1.0
<1,000
<1,000
8
<50
Chloromethane (ug/L)
none
<10,000
<5,000
<1000
<5,000
<1000
<100
<500
<5,000
<1.0
<5,000
<1,000
<1.0
<1
<2,000
<2,500
<2,500
<100
<500
<1.0
<1,000
<1,000
<1.0
<50
Carbon Tetrachloride (ug/L)
0.3
<10,000
<5,000
<1000
<5,000
<1000
<100
<500
<5,000
3.7
<5,000
<1,000
3
4.6
<2,000
<2,500
<2,500
<100
<500
<1.0
<1,000
<1,000
<1.0
<50
1,1-Dichloroethane (ug/L)
700
<10,000
<5,000
<1000
<5,000
<1000
<100
<500
<5,000
<1.0
<5,000
<1,000
<1.0
<1
<2,000
<2,500
<2,500
<100
<500
<1.0
<1,000
<1,000
<1.0
<50
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
<1.0
<1
<2,000
<2,500
<2,500
<100
<500
<1.0
<1,000
<7,000
<1.0
<50
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
3
2.9
<2,000
<2,500
<2,500
<100
<500
<1.0
<1,000
<1,000
<1.0
<50
cis-1,2-Dichloroethene (ug/L)
70
<10,000
<5,000
<1000
<5,000
NA
310
<500
<5,000
210
<5,000
<1,000
166
<1
<2,000
<2,500
NA
<100
<500
2.7
<1,000
<1,000
415
90
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
4
2.2
<2,000
<2,500
NA
<100
<500
<7.0
<1,000
<1,000
5
<50
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
<1.0
<t
<2,000
<2,500
<2,500
<100
<500
<1.0
<1,000
<1,000
<1.0
<50
Methyl tert-butyl ether (MTBE) (ugA)
200
NA
NA
NA
NA
NA
NA
NA
<5,000
NA
<5,000
<1,000
<1.0
<1
NA
NA
NA
NA
<500
NA
NA
<1,000
NA
<50
Trichloroethene (ug/L)
2.8
<10,000
<5,000
<1000
<5,000
<1000
210
<500
<5,000
<1000
<5,000
<1.000
90
<1
<2,000
<2,500
<2,500
<100
<500
7.6
<1,000
<1,000
880
370
Tetrachloroethene (ug/L)
0.7
270,000
250,000
110,000
200,000
200,000
162,000
94,000
60,500
156,000
154,000
148,000
138,000
126,000
55,000
39,000
38,000
17,000
22,200
13,400
41,200
64,800
44,800
12,800
1,1,2,2-Tetrachloroethane (ug/L)
none
<10.000
<5,000
<1000
<5,000
<1000
<100
<500
<5,000
5
<5,000
<1.0
<1
<2,000
<2,500
<2,500
<100
<500
<1.0
<1,000
<1.0
<50
Toluene (ug/L)
1,000
NA
NA
NA
NA
NA
<100
NA
<5,000
<1.0
<5,000
NA
15.5
NA
NA
NA
<100
<500
<1.0
<1,000
<1.0
2.4
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
3
<2,000
<2,500
<2,500
<100
<500
<1.0
<1,000
<1,000
<1.0
<50
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
42
40.2
<2,000
<2,500
<2,500
<100
<500
<1.0
<1,000
<1,000
<1.0
<50
Xylenes, Total (ug/L)
530
NA
NA
NA
NA
NA
<200
NA
<10,000
<2.0
<10,000
NA
3.5
NA
NA
NA
<200
<1,000
<2.0
<2,000
NA
16.4
Total VOCs Detected (ug/L)an=
270,000
250.000
112,100
200,000
200,000
152,520
94,000
60,500
156,290
154,000
148,000
138,328
126,116
55,000
39,000
38,000
17,000
22,200
13,410
41.200
54,800
46,108
13,283
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 Hist summary.As Page 1 of 6 Revised 11/18/01

TABLE 4
Historical Groundwater Analytical Data Summary - Shallow Wells
W. P. Ballard and Downgradient Properties
Greensboro, North Carolina
Sample Location:
MW-5
MW-6
Sample Date:
5/29/92 A
7/22/94 A
7/22/96 A
12/02/98 B
10/28/99 B
3/22/00 B
917/00 B
10/19/00 B
3/8/01 B
8/22/01 B
5/29/92 A
7/11/96A
12/02/98 B
10/28/99 B
3/22100 B
9/7/00 B
10/19/00 B
8/22/01 B
Analyte
NCAC 2L
Benzene (ug/L)
1.0
NA
NA
NA
<1.0
<100
<1.0
NA
<100
NA
<1
NA
NA
<1.0
<10.0
<10.0
NA
<50
NA
Ethylbenzene (ug/L)
29
NA
NA
NA
<1.0
<700
<1.0
NA
<100
NA
<1
NA
NA
<1.0
<10.0
<10.0
NA
<50
NA
Methylene Chloride (ug/L)
5.0
<200
<100
<500
<5.0
<500
<5.0
<500
<500
10
9.8
<10
<5.0
<5.0
<50.0
<50.0
<250.0
<250
<5
Chloroform (ug/L)
0.19
<200
<100
<100
<1.0
<100
<1.0
<100
<100
1
<5
<10
<1.0
<1.0
<10.0
<10.0
<50.0
<50
<1
Chloromethane (ug/L)
none
<200
<100
<100
<1.0
<100
<1.0
<100
<100
<1.0
<1
<10
<1.0
<1.0
<10.0
<10.0
<50.0
<50
<1
Carbon Tetrachloride (ug/L)
0.3
<200
<100
<100
<1.0
<100
<1.0
<100
<100
<1.0
<1
<10
<1.0
<1.0
<10.0
<10.0
<50.0
<50
<1
1. 1 -Dichloroethane (ug/L)
700
<200
<100
<100
<1.0
<100
<1.0
<100
<100
12
<1
<10
<1.0
1
<10.0
<10.0
<50.0
<50
9.4
1,2-Dichloroethane (ug/L)
0.38
<200
<100
<100
<1.0
<100
<1.0
<100
<100
<1.0
<1
<10
<1.0
<1.0
<10.0
<10.0
<50.0
<50
4.4
1,1-Dichloroethene (ug/L)
7.0
<200
<100
<100
6.9
<100
6
<100
<100
<1.0
34.9
54
89
203
199
296
445
470
450
cis-1,2-Dichloroethene (ug/L)
70
<200
<100
<100
1.5
<100
<1.0
<100
<100
2
3.1
<10
NA
1.9
<10.0
<10.0
<50.0
<50
6.5
trans-1,2-Dichbroethene (ug/L)
70
<200
<100
<100
<1.0
<100
<1.0
<100
<100
<1.0
<1
<10
NA
1.6
<10.0
<10.0
<50.0
<50
3.7
1,2-Dichloropropane (ug/L)
0.56
<200
<100
<100
<1.0
<100
<1.0
<100
<100
<1.0
<1
<10
<1.0
<1.0
<10.0
<10.0
<50.0
<50
<1
Methyl tert-butyl ether (MTBE) (ug/1)
200
NA
NA
NA
NA
<100
NA
NA
<100
NA
<t
NA
NA
NA
<10.0
NA
NA
<50
<1
Trichloroethene (ug/L)
2.8
<200
<too
<100
1.2
<100
4.2
<100
<100
5
1.4
<10
<1.0
<1.0
<10.0
<10.0
<50.0
<50
<1
Tetrachloroethene (ug/L)
1
9,500
5,100
6,300
3,200
7,590
8,120
5,880
5,060
1,940
7,520
11
28
66
37
101
125
255
166
1, 1,2,2-Tetrach loroethane (ug/L)
none
<200
<100
<100
<1.0
<100
<1.0
<100
<1.0
<1
�:Jo
<1.0
<1.0
<10.0
<10.0
<50.0
<1
Toluene (ug/L)
1,000
NA
NA
NA
<1.0
<100
<1.0
NA
NA
<1
NA
NA
<1.0
<10.0
<10.0
NA
NA
<1
1,1,1-Trichloroethane (ug/L)
200
<200
<100
<100
<1.0
<100
<1.0
<100
<100
<1.0
<1
18
16
19
18
<10.0
<50.0
<50
30.3
1,1,2-Trichloroethane (ug/L)
none
<200
<100
<100
<1.0
<100
3.3
<100
<100
3
1
._10
2.8
2.8
<10.0
<10.0
<50.0
<50
9
Xylenes, Total (ug/L)
NA
NA
NA
<2.0
<200
<2.0
NA
NA
<1
NA
NA
<2.0
<20.0
<20.0
NA
NA
NA
Total VOCs Detected (ug/L)
9,500 1
5.100
6,300 1
3,210
7,590
8.134
5,880
5.060 1
1,973
7,570
83
136
295
254 1
397
1 570
725 1
679
Sample Location:
MW-8
MW-9
Sample Date:
1/9/93 A
7/21/94 A
7111/96 A
12/02/98 B
10/28/99 B
3/22/00 B
9!7/00 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
3/22/00 B
9/12/00 B
8/21/01 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
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
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
<5
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
<1
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
<1
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
<1
1,1-Dichioroethane (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
<1
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
<1
1,1-Dichlorcethene (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
<1
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
<1
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
<1
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
<1
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
<1
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
<1
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
<1
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
<1
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
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
<1
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
<1
Xylenes, Total (ug/L)
530
NA
NA
NA
<2.0
<2.0
<2.0
NA
NA
NA
NA
NA 1
<2.0 1
<2.0 1
<2.0
NA
NA
Total VOCs Detected (ug/L)
ow
12
4
3
4
0
0
0
24
8
4
4
9
0
0
0
0
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 Hist summary.xls Page 2 of 6 Revised 11/18/01

TABLE 4
Historical Groundwater Analytical Data Summary - Shallow Wells
W. P. Ballard and Downgradient Properties
Greensboro, North Carolina
Sample Location:
MW-7
MW-11
MW-12
Sample Date:
1/9/93 A
7122/94 A
7/12/96 A
12/02/98 B
10/27/99 B
3/22/00 B
9/8/00 B
8/22/01 8
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
3/22/00 8
9/12/00 B
3/7/01 8
8121/01 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
<1.0
<10.0
<1.0
NA
NA
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
<1.0
<10.0
<1.0
NA
NA
NA
Methylene Chloride (ug/L)
5.0
6.8
<1.0
<5.0
<5.0
<5.0
<5.0
<25.0
<5
<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
<5.0
<5
Chloroform (ug/L)
0.19
<1.0
1.4
<1.0
<1.0
<1.0
<1.0
<5.0
<1
<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
Chloromethane (ug/L)
none
<1.0
<1.0
<1.0
<1.0
<1.0
<1.0
<5.0
<1
<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
Carbon Tetrachloride (ug/L)
0.3
<1.0
<7.0
<1.0
<1.0
<1.0
<1.0
<5.0
<1
<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
1, 1 -Dichloroethane (ug/L)
700
12
38
16
2.3
1.2
<1.0
<5.0
1.2
<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
1,2-Dichloroethane (ug/L)
0.38
<1.0
<1.0
<1.0
<1.0
<1.0
<1.0
<5.0
<t
<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
1, 1 -Dichloroethene (ug/L)
7.0
<1.0
5.9
1.8
<1.0
<1.0
<1.0
166
2.0
<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
cis-1,2-Dichloroethene (ug/L)
70
<1.0
<1.0
<1.0
<1.0
<1.0
<1.0
<5.0
<1
<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
5.2
trans-1,2-Dichloroethene (ug/L)
70
<1.0
<1.0
<1.0
<1.0
<1.0
<1.0
<5.0
<1
<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
1,2-Dichloropropane (ug/L)
0.56
<1.0
<1.0
<1.0
<1.0
<1.0
<1.0
<5.0
<t
<1.0
<1.0
<1.0
<1.0
<1.0
<1.0
<1.0
<1.0
<5.0
54
209
240
117
277
94
60
Methyl tert-butyl ether (MTBE) (ug/l)
200
NA
NA
NA
NA
<1.0
NA
NA
<1
NA
NA
NA
NA
NA
NA
NA
NA
NA
NA
NA
NA
NA
NA
NA
<1
Trichloroethene (ug/L)
2.8
<1.0
<1.0
<1.0
<1.0
<1.0
<1.0
<5.0
<1
<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
9
5.2
Tetrachloroethene (ug/L)
1
1
2
1
<1.0
<1.0
<1.0
18
25.8
<1.0
<1.0
<1.0
<1.0
<1.0
<1.0
<1.0
<1.0
110
1
2
<10.0
<1.0
<10.0
<1.0
7.7
1,1,2,2-Tetrachloroethane (ug/L)
none
<1.0
<1.0
<1.0
<1.0
<1.0
<1.0
<5.0
<1
<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
7
<1
Toluene (ug/L)
1,000
NA
NA
NA
<1.0
<1.0
<1.0
NA
NA
NA
NA
NA
<1.0
<1.0
<1.0
NA
NA
NA
NA
<1.0
<10.0
<1.0
NA
NA
NA
1,1,1-Trichloroethane(ug/L)
200
4.4
6
3.4
<1.0
<1.0
<1.0
<5.0
<1
<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
1,1,2-Trichloroethane (ug/L)
none
<1.0
<1.0
<1.0
<1.0
<1.0
<1.0
<5.0
<1
<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
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 1
<2.0 1
<20.0 1
<2.0 1
NA
NA
NA
Total VOCs Detected (ug/L)
25
54
23
2
1
0
184
29
0
0
2
0
0
0
0
0
110
100
214 1
240 1
119 1
277
111
78
Sample Location:
MW-110
MW-14
Sample Date:
1/9/93 A
6/25/93 A
7/21/94 A
07/10/96 A
7/10196 B
12/02/98 B
10/27/99 B
3/22/00 B
9/14/00 8
3/7/01 B
8122101 B
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
Analyte
NCAC 2L
Benzene (ug/L)
1.0
NA
NA
NA
NA
NA
<1.0
<1.0
<1.0
NA
NA
1.7
NA
NA
NA
<1.0
NS
<1.0
NA
Ethylbenzene (ug/L)
29
NA
NA
NA
NA
NA
<1.0
<1.0
<1.0
NA
NA
<1
NA
NA
NA
<1.0
NS
<1.0
NA
Methylene Chloride (ug/L)
5.0
<250
<100
<100
<2,500
<250
<5.0
<5.0
<5.0
<2500
<5.0
<5.0
<1.0
<5.0
<1.0
<5.0
NS
<5.0
<5.0
Chloroform (ug/L)
0.19
<250
<100
<100
<500
<250
<1.0
2.4
<1.0
<500
3
5.5
<1.0
<1.0
<1.0
<1.0
NS
<1.0
<1.0
Chloromethane (ug/L)
none
<250
<100
<100
<500
<250
<1.0
<1.0
<1.0
<500
<1.0
<1
<1.0
<1.0
<1.0
<1.0
NS
<1.0
<1.0
Carbon Tetrachloride (ug/L)
0.3
<250
<100
<100
<500
<250
<1.0
<1.0
<1.0
<500
<1.0
<1
<1.0
<1.0
<1.0
<1.0
NS
<1.0
<1.0
1,1-Dichloroethane (ug/L)
700
<250
<100
<100
<500
<250
<1.0
<1.0
<1.0
<500
<1.0
<1
<1.0
<1.0
<1.0
<1.0
NS
<1.0
<1.0
1,2-Dichloroethane (ug/L)
0.38
<250
<100
<100
<500
<250
<1.0
1.7
1.9
<500
5
8
<1.0
<1.0
<1.0
<1.0
NS
<1.0
<1.0
1,1-Dichloroethene (ug/L)
7.0
<250
<100
<100
<500
<250
<1.0
<1.0
<1.0
<500
<1.0
<1
<1.0
<1.0
<1.0
<1.0
NS
<1.0
<1.0
cis-1,2-Dichloroethene (ug/L)
70
<250
<100
<100
<500
NA
5.8
3.5
7.2
<500
11
11.6
<1.0
<1.0
NA
<1.0
NS
<1.0
<1.0
trans-1,2-Dichloroethene (ug/L)
70
<250
<100
<100
<500
NA
<1.0
<1.0
<1.0
<500
<1.0
<1
<1.0
<1.0
NA
<1.0
NS
<1.0
<1.0
1,2-Dichloropropane (ug/L)
0.56
<250
<100
<100
<500
<250
<1.0
<1.0
<1.0
<500
<7.0
<1
<1.0
<1.0
<1.0
<1.0
NS
<1.0
<1.0
Methyl tert-butyl ether (MTBE) (ug/I)
200
NA
NA
NA
NA
NA
NA
<1.0
NA
NA
NA
.=1
NA
NA
NA
NA
NS
NA
NA
Trichloroethene (ug/L)
2.8
<250
<100
<100
<500
<250
21
13
13.8
<500
21
30.6
<1.0
<1.0
<1.0
<1.0
NS
1.8
<1.0
Tetrachloroethene (ug/L)
0.7
13,000
7,200
12,000
12,000
11,000
12,000
8,090
8,800
6,900
2,020
16,800
<1.0
<1.0
<1.0
<1.0
NS
30.4
1.8
1,1,2,2-Tetrachloroethane (ug/L)
none
<250
<100
<100
<500
<250
<1.0
<1.0
<1.0
<500
<1.0
<1
<1.0
<1.0
<1.0
<1.0
NS
<1.0
<1.0
Toluene (ug/L)
1,000
NA
NA
NA
NA
NA
<1.0
<1.0
<1.0
NA
<1.0
<1
NA
NA
NA
NA
NS
<1.0
NA
1,1,1-Trichloroethane (ug/L)
200
<250
<100
<100
<500
<250
<1.0
<1.0
<1.0
<500
<1.0
<1
<1.0
<1.0
<1.0
<1.0
NS
<1.0
<1.0
1,1,2-Tdchloroethane (ug/L)
none
<250
<100
<100
<500
<250
11
8.3
12
<500
13
24.4
<1.0
<1.0
<1.0
<1.0
NS
<1.0
<1.0
Xylenes, Total (ug/L)
530
NA
NA
NA
NA
NA
<2.0
<2.0
<2.0
NA
NA
<1
NA
NA
NA
NA
NS
<2.0
NA
Total VOCs Detected (ug/L)
13,000
7,200
12,000
12,000
11,000 1
12,038 1
8,119 1
8,835
6,900
2,073
16,882
0
0
0
0
0
32
2
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 Hist summary.xls Page 3 of 6 Revised 11/18/01

TABLE 4
Historical Groundwater Analytical Data Summary - Shallow Wells
W. P. Ballard and Downgradient Properties
Greensboro, North Carolina
Sample Location:
MW-13
MW-17
Sample Date:
6/25/93 A
7/9/96 A
7/9/96 B
1/21/99 B
10/25M B
3/22/00 B
9/13/00 B
8/21/01 B
7/10/96 A
7110/96 B
10/07/96 B
12/02/98 B
10/26/99 B
3/22100 B
9113/00 B
317/01 B
8121/01 B
Analyte
NCAC 2L
Benzene (ug/L)
1.0
NA
NA
NA
NA
<1.0
<1.0
NA
NA
NA
NA
NA
<1.0
<1.0
<1.0
NA
NA
NA
Ethylbenzene (ug/L)
29
NA
NA
NA
NA
<1.0
<1.0
NA
NA
NA
NA
NA
<1.0
<1.0
<1.0
NA
NA
NA
Methylene Chloride (ug/L)
5.0
<1.0
<5.0
1.5
<5,0
<5.0
<5.0
<5.0
<5
<250
<50
<10
<5.0
<5.0
<5.0
<500
<5.0
<50
Chloroform (ug/L)
0.19
<1.0
<1.0
<1.0
<1.0
<1.0
<1.0
<1.0
<1
<50
<50
31
<1.0
1.6
1
<100
4
55
Chloromethane (ug/L)
none
<1.0
<1.0
<1.0
<1.0
<1.0
<1.0
<1.0
<1
<50
<50
<10
<1.0
<1.0
<1.0
<100
<1.0
<50
Carbon Tetrachloride (ug/L)
0.3
<1.0
<1.0
<1.0
<1.0
<1.0
<1.0
<1.0
<1
<50
<50
140
6.4
12.6
16.7
<100
17
<50
1,1-Dichloroethane (ug/L)
700
<1.0
<1.0
<1.0
<1.0
<1.0
<1.0
<1.0
<1
<50
<50
- 10
<1.0
<1.0
<1.0
<100
<1.0
<50
1,2-Dichloroethane (ug/L)
0.3
<1.0
<1.0
<1.0
<1.0
<1.0
<1.0
<1.0
<1
<50
<50
<10
<1.0
<1.0
<1.0
<100
<1.0
<50
1,1-Dichloroethene (ug/L)
7.0
<1.0
<1.0
<1.0
<1.0
<1.0
<1.0
<1.0
<1
<50
<50
<10
<1.0
<1.0
<1.0
<100
2
<50
cis-1,2-Dichloroethene (ug/L)
70
<1.0
<1.0
NA
<1.0
<1.0
<1.0
<1.0
<1
NA
NA
NA
59
95
130
<100
160
165
trans-1,2-Dichloroethene (ug/L)
70
<1.0
<1.0
NA
<1.0
<1.0
<1.0
<1.0
<1
NA
NA
NA
<1.0
<1.0
11.2
<100
2
<50
1,2-Dichloropropane (ug/L)
0.56
<1.0
<1.0
<1.0
<1.0
<1.0
<1.0
<1.0
<1
<50
<50
<10
<1.0
6.0
<1.0
<100
<1.0
<50
Methyl tert-butyl ether (MTBE) (ug/1)
200
NA
NA
NA
NA
NA
NA
NA
<1
NA
NA
NA
NA
NA
NA
NA
NA
<50
Trichloroethene (ug/L)
2.8
<1.0
<1.0
<1.0
<1.0
<1.0
<1.0
6.2
<1
780
620
120
490
960
1,060
1,150
1330
565
Tetrachloroethene (ug/L)
1
<1.0
1
<1.0
<1.0
<1.0
<1.0
36
<1
5,200
5,200
28
2,600
4,880
5,680
4,090
4,770
2,340
1,1,2,2-Tetrachloroethane (ug/L)
none
<1.0
<1.0
<1.0
<1.0
<1.0
<1.0
<1.0
<1
<50
<50
<10
<11.0
<1.0
<1.0
<1.0
<1.0
<50
Toluene (ug/L)
1,000
NA
NA
NA
NA
<1.0
<1.0
NA
NA
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
<1.0
<1.0
<1.0
<1
<50
<50
<10
<1.0
<1.0
<1.0
<100
<1.0
<50
1,1,2-Trichloroethane (ug/L)
none
<1.0
<1.0
<1.0
<1.0
<1.0
<1.0
<1.0
<t
450
<50
<10
<1.0
<11.0
<11.0
<100
2
<50
Xylenes, Total (ug/L)
NA
NA
NA
NA
<2.0
<2.0
NA
NA
NA
NA
NA
<2.0
<2.0
<2.0
NA
NA
NA
Total VOCs Detected (ug/L)
0
1
2
0
0 I
0
42
0
5,980 1
5,820 1
319 1
3,155 1
5,955 1
6,899 1
5,240 1
6,287 1
3,115
Sample Location:
MW-15
MW-16
MW-20
MW-21
Sample Date:
7/10/96 A
7/10196 B
12/02/98 B
10/27/99 B
3/22/00 B
9/13/00 B
317/01 B
8/21/01 B
7/10196 A
7/10/96 B
10/7/96 A
10/7/96 B
01/21/99 B
10/26/99 B
3/22/00 B
9113/00 B
10/7196 A
1017/96 B
12/62/98 B
10/26/99 B
3/22/00 B
9/13100 B
Analyte
NCAC 2L
Benzene (ug/L)
1.0
NA
NA
<1.0
<1.0
<1.0
NA
NA
NA
NA
NA
NA
NA
NA
<1.0
<1.0
NA
NA
NA
<1.0
<1.0
<1.0
NA
Ethylbenzene (ug/L)
29
NA
NA
<1.0
<1.0
<1.0
NA
NA
NA
NA
NA
NA
NA
NA
<1.0
<1.0
NA
NA
NA
=1.0
<1.0
<1.0
NA
Methylene Chloride (ug/L)
5.0
<25
<1.0
<5.0
<5.0
<5.0
<50.0
<5.0
<50
<5.0
1.4
<2.5
<1.0
<5.0
<5.0
<5.0
<5.0
<2.5
<1.0
<5.0
<5.0
<5.0
<50.0
Chloroform (ug/L)
0.19
28
27
24
16.4
18.7
22
17
25
<1.0
<1.0
<0.50
<0.19
<1.0
<1.0
<1.0
<1.0
<0.50
<0.19
<1.0
<1.0
<1.0
<10.0
Chloromethane (ug/L)
none
<5.0
<1.0
<1.0
<1.0
<1.0
<10.0
<1.0
<10
<1.0
<1.0
<0.50
<2.0
<1.0
<1.0
<1.0
<1.0
<0.50
<2.0
<1.0
<1.0
<1.0
<10.0
Carbon Tetrachloride (ug/L)
0.3
29
24
13
7.7
7.6
<10.0
7
<10
<1.0
<1.0
<0.50
<0.30
<1.0
<1.0
<1.0
<1.0
<0.50
<0.30
<1.0
<1.0
<1.0
<10.0
1,1-Dichloroethane (ug/L)
700
<5.0
<1.0
<1.0
<1.0
<1.0
<10.0
<1.0
<10
<1.0
<1.0
<0.50
<1.0
<1.0
<1.0
<1.0
<1.0
<0.50
<1.0
<1.0
<1.0
<1.0
<10.0
1,2-Dichloroethane (ug/L)
0.38
<5.0
<1.0
<1.0
<1.0
<1.0
<10.0
<1.0
<10
<1.0
<1.0
<0.50
<1.0
<1.0
<1.0
<1.0
<1.0
<0.50
<1.0
<11.0
<1.0
<1.0
<10.0
1,1-Dichloroethene (ug/L)
7.0
<5.0
<1.0
<1.0
<1.0
<1.0
<10.0
<1.0
<10
<1.0
<1.0
<0.50
<1.0
<1.0
<1.0
<1.0
<1.0
<0.50
<1.0
<1.0
<1.0
<1.0
<10.0
cis-1,2-Dichloroethene (ug/L)
70
7.7
NA
16
18.9
30.5
19
24
22
<1.0
NA
NA
NA
<1.0
<1.0
<1.0
<1.0
NA
NA
1.9
<1.0
1.1
<10.0
Vans-1,2-Dichloroethene (ug/L)
70
<5.0
NA
<1.0
<1.0
<1.0
<10.0
<1.0
<10
<1.0
NA
NA
NA
<1.0
<1.0
<1.0
<1.0
NA
NA
<1.0
<1.0
<1.0
<10.0
- i oropropane (ug/L)
0.56
<
<1.0
<1.0
<7.0
<1.0
<10.0
<1.0
<10
<1.0
<1.0
<0.50
<0.20
<1.0
<1.0
<1.0
<1.0
<0.50
<0.20
<1.0
<1.0
<1.0
<10.0
Methyl tert-butyl ether (MTBE) (ug/1)
200
NA
NA
NA
NA
NA
NA
NA
<10
NA
NA
NA
NA
NA
NA
NA
NA
NA
NA
NA
NA
NA
NA
Trichloroethene (ug/L)
2.8
130
95
221
280
468
538
404
345
<1.0
<1.0
<0.50
<1.0
<1.0
<1.0
<1.0
<1.0
11
<1.0
39
40.9
39
46
Tetrachloroethene (ug/L)
0.7
42
33
39
20.8
87
40
30
11
<1.0
<1.0
<0.50
<0.70
<1.0
<1.0
<1.0
9.0
98
7.7
310
252
333
289
1,1,2,2-Tetrachioroethane (ug/L)
none
<5.0
<1.0
<1.0
<1.0
<1.0
<1.0
<1.0
<10
<1.0
<1.0
<0.50
<1.0
<1.0
<1.0
<1.0
<1.0
<0.50
<1.0
<1.0
<1.0
<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
<1.0
<1.0
NA
NA
NA
<1.0
<1.0
<1.0
NA
1,1,1-Trichloroethane (ug/L)
200
<5.0
<11.0
<1.0
<1.0
<1.0
<1.0
<1.0
<10
<1.0
<1.0
<0.50
<1.0
<1.0
<1.0
<1.0
<1.0
<0.50
<1.0
<1.0
<1.0
<1.0
<10.0
1,1,2-Trchloroethane (ug/L)
none
<5.0
<1.0
<1.0
<1.0
<1.0
<1.0
<1.0
<10
<1.0
<1.0
<0.50
<1.0
<1.0
<1.0
<1.0
<1.0
<0.50
<1.0
<1.0
<1.0
<1.0
<10.0
Xylenes, Total (ug/L)
530
NA
NA 1
<2.0
<2.0
<2.0
NA
NA
NA
NA
NA
NA
NA
NA
<2.0
<2.0
NA
NA
NA
<2.0
<2.0 1
<2.0
NA
Total VOCs Detected (ug/L)
237
179
313
344
612
619
482
403
0
1
0
0
0
0
0
9
109
8
351
293
373
335
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 Hist summary.xls Page 4 of 6 Revised 11/18/01

TABLE 4
Historical Groundwater Analytical Data Summary - Shallow Wells
W. P. Ballard and Downgradient Properties
Greensboro, North Carolina
Sample Location:
MW-18
MW-19
MW-23
MW-24
MW-25
Sample Date:
1017/96A
10/07/96 B
12/02/98 B
10/26/99 B
3/22100 B
9/13/00 B
317/01 B
8/21/01 B
10/7196 A
108196 B
1017/96 A
10/7/96 B
12/02/98 B
10/25/99 B
3/22/00 B
9/13/00 8
96-/01 B
8120/01 B
10/7/96 A
10I//96 B
10/7/96 A
1 1017/96 B
Analyte
NCAC 2L
Benzene (ug/L)
1.0
NA
NA
<1.0
<1.0
<1.0
NA
NA
NA
NA
NA
NA
NA
<1.0
1.1
<1.0
NA
NA
NA
NA
NA
NA
NA
Ethylbenzene (ug/L)
29
NA
NA
<1.0
<1.0
<1.0
NA
NA
NA
NA
NA
NA
NA
<1.0
2.5
<1.0
NA
NA
NA
NA
NA
NA
NA
Methylene Chloride (ug/L)
5.0
<250
<100
<5.0
<5.0
<5.0
<500
<5.0
<250
<2.5
<1.0
9.3
6.5
<5.0
<5.0
<5.0
<5.0
<5.0
<1.0
<0.05
<1.0
<2.5
<1.0
Chloroform (ug/L)
0.19
<50
<19
<1.0
<1.0
<1.0
<100
1
<50
<0.50
<0.19
4.7
3.8
<1.0
<1.0
<1.0
<1.0
<11.0
<1.0
<0.50
<0.19
<0.50
<0.19
Chloromethane (ug/L)
none
<50
<200
<1.0
<11.0
<1.0
<100
<1.0
<50
<0.50
<2.0
<0.50
<2.0
<1.0
<1.0
<1.0
<1.0
<1.0
<1.0
<0.50
<2.0
<0.50
<2.0
Carbon Tetrachloride (ug/L)
0.3
<50
<30
<1.0
<1.0
<1.0
<100
<1.0
<50
<0.50
<0.30
<0.50
<0.30
<1.0
<1.0
<1.0
<1.0
<1.0
<1.0
<0.50
<0.30
<0.50
<0.30
1,1-Dichloroethane (ug/L)
700
<50
<100
<1.0
<1.0
<1.0
<100
2
<50
<0.50
<1.0
<0.50
<11.0
<1.0
<1.0
<1.0
<1.0
<1.0
<1.0
<0.50
<1.0
<0.50
<1.0
1,2-Dichloroethane (ug/L)
0.38
<50
<100
<1.0
<1.0
<1.0
<100
<1.0
<50
<0.50
<1.0
<0.50
<1.0
<1.0
<1.0
<1.0
<1.0
<1.0
<1.0
<0.50
<11.0
<0.50
<1.0
1,1-Dichloroethene (ug/L)
7.0
<50
<100
<1.0
<1.0
<1.0
<100
<1.0
<50
<0.50
<1.0
<0.50
<1.0
<1.0
<1.0
<1.0
<1.0
<1.0
<1.0
<0.50
<1.0
<0.50
<1.0
cis-1,2-Dichloroethene (ug/L)
70
NA
NA
18
15.6
18.3
<100
27
<50
NA
NA
NA
NA
<1.0
<1.0
<1.0
<1.0
<1.0
<1.0
NA
NA
NA
NA
Vans-1,2-Dichloroethene (ug/L)
70
NA
NA
<1.0
<1.0
<1.0
<100
<1.0
<50
NA
NA
NA
NA
<1.0
<1.0
<1.0
<1.0
<1.0
<1.0
NA
NA
NA
NA
1,2-Dichloropropane (ug/L)
0.56
<50
<20
<1.0
12.0
<1.0
<100
<1.0
<50
<0.50
<0.20
<0.50
<0.20
<1.0
<1.0
<1.0
<1.0
<1.0
<1.0
<0.50
<0.20
<0.50
<0.20
Methyl tert-butyl ether (MTBE) (ug/1)
200
NA
NA
NA
NA
NA
NA
NA
<50
NA
NA
NA
NA
NA
NA
NA
NA
NA
NA
NA
NA
NA
NA
Trichloroethene (ug/L)
2.8
440
380
680
730
740
830
1,060
<50
<0.50
<1.0
<0.50
<1.0
<1.0
<11.0
<1.0
<1.0
<1.0
<1.0
<0.50
<1.0
<0.50
<1.0
Tetrachloroethene (ug/L)
1
2,100
1,600
2,100
2,100
2,450
1,940
2,200
940
<0.50
<0.70
<0.50
<0.70
<1.0
<1.0
<1.0
<1.0
<1.0
<1.0
<0.50
<0.70
<0.50
<0.70
1,1,2,2-Tetrachloroethane (ug/L)
none
<50
<100
<1.0
<1.0
<1.0
<100
<1.0
<50
<0.50
<1.0
<0.50
<1.0
<1.0
<1.0
<1.0
<1.0
<1.0
<1.0
<0.50
<1.0
<0.50
<1.0
Toluene (ug/L)
1,000
NA
NA
<1.0
<1.0
<1.0
NA
NA
NA
NA
NA
NA
NA
<1.0
<1.0
<1.0
NA
<1.0
<1.0
NA
NA
NA
NA
1,1,1-Trichloroethane (ug/L)
200
<50
<100
<1.0
<1.0
<1.0
<100
<11.0
<50
<0.50
<1.0
<0.50
<1.0
<1.0
<1.0
<1.0
<1.0
<1.0
<1.0
<0.50
<1.0
<0.50
<1.0
1,1,2-Trichloroethane (ug/L)
none
<50
<100
<1.0
<1.0
<1.0
<100
2
<50
<0.50
<1.0
<0.50
<1.0
<1.0
<1.0
<1.0
<1.0
<1.0
<1.0
<0.50
<1.0
<0.50
<1.0
Xylenes, Total (ug/L)
NA
NA
<2.0
<2.0
<2.0
NA
NA
NA
NA
NA
NA
NA
<2.0
<2.0
<2.0
NA
NA
NA
NA
NA
NA
NA
Total VOCs Detected (ug/L)
2,540 1
1,980 1
2,798 1
2.858 1
3,208
2,770 1
3,292
940
0
0
14
10
0
4
0
0
0
0
L 0
0
o
0
Sample Location:
MW-22
LMP-1
LMP-2
Sample Date:
10/7/96 A
10I7/96 B
12/02/98 B
. 10/25/99 B : 3/22/00 B
9/13/00 B
3/7/01 B
8/20/01 B
01/21/99 B
10/26/99 B
3/22/00 B
9/14/00 B
3M-0 B
8/21/01 8
01/21/99 8
10/26/99 B
3/22100 B
9/14/00 B
3/7/01 B
8/21/01 B
Analyte
NCAC 2L
Benzene (ug/L)
1.0
NA
NA
<1.0
<1.0
<1.0
NA
NA
NA
NA
<1.0
<1.0
NA
NA
NA
NA
<1.0
<1.0
NA
NA
NA
Ethylbenzene (ug/L)
29
NA
NA
<1.0
<1.0
<1.0
NA
NA
NA
NA
<1.0
<1.0
NA
NA
NA
NA
<1.0
<1.0
NA
NA
NA
Methylene Chloride (ug/L)
5.0
<120
<10
<5.0
<5.0
<5.0
<250
<5.0
<250
<5.0
<5.0
<5.0
<100
<5.0
<50
<5.0
<5.0
<5.0
<25
<5.0
<1.0
Chloroform (ug/L)
0.19
<25
<11.9
<1.0
<1.0
<1.0
<50
2
<50
<1.0
<1.0
<1.0
<20
<1.0
11
<1.0
1.4
<1.0
<5.0
<1.0
1.7
Chloromethane (ug/L)
none
<25
<20
<1.0
<1.0
<1.0
<50
<1.0
<50
<1.0
<1.0
<1.0
<20
<1.0
<10
<1.0
<1.0
<1.0
<5.0
<1.0
<1.0
Carbon Tetrachloride (ug/L)
0.3
<25
<0.30
<1.0
2.5
3
<50
5
<50
<1.0
<1.0
<1.0
<20
<1.0
<10
<1.0
<1.0
<1.0
<5.0
<1.0
<1.0
1,1-Dichloroethane (ug/L)
700
<25
<10
<1.0
<1.0
<1.0
<50
<1.0
<50
<1.0
<1.0
<1.0
<20
<1.0
<10
<1.0
<1.0
<1.0
<5.0
<1.0
<1.0
1,2-Dichloroethane (ug/L)
0.38
<25
<10
<1.0
<1.0
<11.0
<50
<1.0
<50
<1.0
<1.0
<1.0
<20
1
<10
<1.0
1.7
<1.0
<5.0
<1.0
<1.0
1,1-Dichloroethene (ug/L)
7.0
<25
<10
<1.0
<1.0
<1.0
<50
<1.0
<50
<1.0
<1.0
<1.0
<20
<1.0
<10
<1.0
<1.0
<1.0
<5.0
<1.0
<1.0
cis-1,2-Dichloroethene (ug/L)
70
NA
NA
31.4
50.3
48.6
<50
85
<50
47.8
21.2
12.6
<20
11
65
10
10.9
9.9
7
10
13.8
trans-1,2-Dichloroethene (ug/L)
70
NA
NA
<1.0
<1.0
<1.0
<50
4
<50
1.4
<1.0
1.6
<20
1
<10
<1.0
<1.0
<1.0
<5.0
<1.0
<1.0
1,2-Dichloropropane (ug/L)
0.56
<25
2.8
<1.0
<1.0
<1.0
<50
<1.0
<50
1,370
1,560
<1.0
1,370
830
596
238
316
<1.0
292
382
260
Methyl tert-butyl ether (MTBE) (ug/1)
200
NA
NA
NA
NA
NA
NA
NA
<50
<1.0
<1.0
NA
NA
NA
<1
<1.0
NA
NA
NA
NA
<1.0
Trichloroethene(ug/L)
2.8
62
53
110
146
170
195
365
180
<1.0
<1.0
34.7
120
33
67
<1.0
<1.0
8.4
26.5
12
6.9
Tetrachloroethene (ug/L)
0.7
1500
910
1,240
1,680
1,640
1,720
2,040
1,790
192
145
913
586
215
81
25.4
45.5
80.6
65.5
86
51.8
1,1,2,2-Tetrachloroethane (ug/L)
none
<25
<10
<1.0
<1.0
<1.0
<50.0
<1.0
<50
<1.0
<1.0
<1.0
<20.0
<1.0
<10
<1.0
<1.0
<1.0
<5.0
<1.0
<1.0
Toluene (ug/L)
1,000
NA
NA
<1.0
<1.0
<1.0
NA
0.0
NA
NA
<1.0
<11.0
NA
NA
NA
NA
<1.0
<1.0
NA
NA
NA
1,1,1-Tdchloroethane (ug/L)
200
<25
<10
<1.0
<1.0
<1.0
<50
<1.0
<50
<1.0
<1.0
<1.0
<20
<1.0
<10
<1.0
<1.0
<1'o
<5.0
<1.0
<1.0
1,1,2-Trichloroethane (ug/L)
none
<25
<10
<1.0
<1.0
<1.0
<50
<1.0
<50
<1.0
<1.0
<1.0
<20
<1.0
<10
<1.0
8.3
<1.0
<5.0
<1.0
<1.0
Xylenes, Total (ug/L)
530
NA
NA
<2.0 1
<2.0
<2.0
NA
NA
NA
NA
<2.0
<2.0
NA
NA
NA
NA
<2.0
<2.0
NA
NA
NA
Total VOCs Detected (ug/L)
1,562
966
1,381
1,879 1
1,862 1
1.915 1
2,491 1
1,970 1
1,611 1
1,726
962
2,076 1
1,091
819 1
273 1
384
99
391 1
490
324
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 Hist summary.xls Page 5 of 6 Revised 11/18/01

TABLE 5
August 2001 Groundwater Analysis Data Summary - Deep Wells
W. P. Ballard and Downgradient Properties
Greensboro, North Carolina
Sample Location:
DW-3
DW-4
DW-5
DW-7
DW-8
DW-13
DW-14
DW-15
DMP-1
DMP-2
DMP
DMP-4
BMW-2
HVDP-10
HVDP-15
HVDP-22
HVDP-27
HVDP-29
Sample Date:
8/22/01 B
8/22101 B
8/21/01 B
8/21/01 B
8/21/01 B
8121101 B
8120/01 B
8/20/01 B
8/23/01
8/21/01 B
8/21/01
8121/01 B
8/22/01
8/23/01
8/23/01
8/23/01
8/23/01
8/23/01
Analysis Method:
EPA601/6021
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
3.2
NA
NA
NA
NA
NA
NA
NA
NA
NA
NA
NA
<1.0
NA
NA
NA
NA
NA
Bromoform (ug/L)
0.19
<1.0
<500
<50
<5
<50
<10
<10
<10
<500
<50
<5
<5000
<1.0
<50
<50
<50
<50
<50
1,2-Dichlorobenzene (ug/L)
none
<1.0
<500
<50
<5
<50
<10
<10
<10
<500
<50
<5
<5000
<1.0
<50
<50
<50
<50
<50
1.3-Dichlorobenzene (ug/L)
none
<1.0
<500
<50
<5
<50
<10
<10
<10
<500
<50
<5
<5000
<1.0
<50
<50
<50
<50
<50
Methylene Chloride (ug/L)
5.0
<1.0
<2500
<250
<25
<250
<10
<50
<10
<2500
<50
<25
<25000
<5.0
<250
<250
<250
<250
<250
Chloroform (ug/L)
0.19
4.5
<500
<50
<5
<50
<10
<10
<10
<500
<50
<5
<5000
<1.0
<50
<50
<50
<50
<50
Chloromethane (ug/L)
none
<1.0
<500
<50
<5
<50
<10
<10
<10
<500
<50
<5
<5000
<1.0
<50
<50
<50
<50
<50
Carbon Tetrachloride (ug/L)
0.3
<1.0
<500
<50
<5
<50
<10
<10
<10
<500
<50
<5
<5000
<1.0
<50
<50
<50
<50
<50
1, 1 -Dichloroethane (ug/L)
700
<1.0
<500
<50
<5
<50
<10
<10
<10
<500
<50
<5
<5000
<1.0
<50
<50
<50
<50
<50
1,2-Dichloroethane (ug/L)
0.38
<1.0
<500
<50
<5
<50
<10
<10
<10
<500
<50
<5
<5000
<1.0
<50
<50
<50
<50
<50
Vinyl chloride (ug/L)
0.015
<1.0
<500
<50
<5
<50
<10
<10
<10
<500
<50
<5
<5000
<1.0
<50
<50
<50
<50
<50
1, 1 -Dichloroethene (ug/L)
7.0
1.7
<500
<50
<5
<50
<10
<10
<10
<500
<50
<5
<5000
45.2
<50
<50
<50
<50
<50
cis-1,2-Dichloroethene (ug/L)
70
6.4
<500
<50
<5
<50
<10
<10
<10
<500
<50
<5
<5000
13,100
<50
2,800
215
600
<50
trans-1,2-Dichloroethene (ug/L)
70
<1.0
<500
<50
<5
<50
<10
<10
<10
<500
<50
<5
<5000
<1.0
<50
<50
<50
<50
<50
1,2-Dichloropropane (ug/L)
0.56
<1.0
<500
<50
<5
<50
<10
<10
<10
<500
<50
<5
<5000
<1.0
<50
<50
<50
<50
<50
Ethylbenzene (ug/L)
29
<1.0
NA
NA
NA
NA
NA
<10
<10
NA
NA
NA
NA
<1.0
NA
NA
NA
NA
NA
Trichloroethene (ug/L)
2.8
19.5
<500
655
<5
<50
32
116
92
<500
1,480
21.5
<5000
2,300
1,180
72,700
2,030
1,350
75
Tetrachloroethene (ug/L)
0.7
62,000
<500
<50
226
1,100
447
455
469
<500
150
144
<5000
30,400
755
1,440
2,150
2,930
780
Toluene (ug/L)
1,000
11
NA
NA
NA
NA
NA
NA
NA
NA
NA
NA
NA
1.9
NA
NA
NA
NA
NA
1,1,1-Trichloroethane (ug/L)
200
<1.0
<500
<50
<5
<50
<10
<10
<10
<500
<50
<5
<5000
<1.0
<50
<50
<50
<50
<50
1,1,2-Trichloroethane (ug/L)
none
22.3
<500
<50
<5
<50
<10
<10
<10
<500
<50
<5
<5000
8.9
<50
<50
<50
<50
<50
Xylenes, Total (ug/L)
530
<1.0
NA
NA
NA
NA
NA
NA
NA
NA I
NA
NA
NA
<1.0
NA
NA
NA
NA
NA
Total VOCs (ug/L)
62,069
0
655
226
1,100
479
571
561
0
1,630
166
0
45,856
1,935
76,940
4,395
4,880
855
Notes: Compounds detected above the North Carolina 2L Standard are shown in bold.
B - indicates samples collected by IT Corporation of North Carolina, Inc. (formerly Fluor Daniel GTI, Inc.)
NA denotes compound not analyzed
Table 5.xls Page 1 of 1 Revised: 11/28/01

TABLE 6
Historical Groundwater Analysis Data Summary - Deep Wells
W. P. Ballard and Downgradient Properties
Greensboro, North Carolina
Sample Location:
DW-1
DW-2
DW-3
7/22/94 A
7/12/96 A
12/2/98 B
10/27/99 B
3/23/00 B
977/00 B
10/19/00 B
722/94 A
7/11/96 A
12/2/98 B
1028/99 B
3/22/00 B
9/7/00 B
7/22194 A
7/10/96 A
7/10196 B
12/2198 B
10/28/99 B
3/23/00 B
W7/00 B
10/18/00 B
3/8/01 B
8/22/01 B
Sample Date:
Analysis Method:
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
EPA 601
EPA 601/60.
Anatyte
NCAC 2L
Benzene (ug/L)
1.0
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
NA
3.2
Bromoform (ug/L)
0.19
<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
1,2-Dichlorobenzene (ug/L)
none
<1.0
<1.0
<1.0
<1.0
<1.0
<1.0
<10
<1.0
<2.5
41.0
<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
1.3-Dichlorobenzene (ug/L)
none
<1.0
<1.0
<1.0
<1.0
<1.0
<1.0
<10
<1.0
<2.5
<1.0
<10.0
0.0
<1.0
<100
<2,500
<1,000
<1.0
<5,000
<1.0
<1.0
<1,000
<1.0
<1.0
Methylene Chloride (ug/L)
5.0
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
<250
<1.0
Chloroform (ug/L)
0.19
6.1
<1.0
<1.0
1.2
<1.0
<1.0
<10
3.2
<2.5
<1.0
<10.0
<1.0
0.0
<100
<2,500
<1,000
4
<5,000
1.4
<1.0
0,000
3
4.5
Chloromethane (ug/L)
none
<1.0
0.0
0.0
<1.0
<1.0
<1.0
<10
<1.0
<2.5
<1.0
<10.0
0.0
0.0
<100
<2,500
<2,000
<1.0
<5,000
<1.0
<1.0
<1,000
<1.0
<1.0
Carbon Tetrachloride (ug/L)
0.3
<1.0
<1.0
<1.0
0.0
<1.0
<1.0
<10
<1.0
<2.5
<1.0
<10.0
<1.0
<1.0
<100
<2,500
0,000
<1.0
<5,000
<1.0
<1.0
<1,000
0.0
<1.0
1. 1 -Dichloroethane (ug/L)
700
<1.0
<1.0
0.0
<1.0
16.6
<1.0
<10
<1.0
<2.5
<1.0
<10.0
3.5
<1.0
<100
<2,500
<1,000
0.0
<5,000
<1.0
<1.0
<1,000
<1.0
<1.0
1,2-Dichlorcethane (ug/L)
0.38
<1.0
0.0
<1.0
<1.0
<1.0
<1.0
<10
0.0
<2.5
<1.0
<10.0
<1.0
<1.0
<100
<2,500
<1,000
<1.0
<5,000
<1.0
<1.0
0,000
<1.0
<1.0
Vinyl chloride (ug/L)
0.015
<1.0
<1.0
0.0
<1.0
<1.0
<1.0
<10
<1.0
<2.5
0.0
<10.0
<1.0
<1.0
<100
<2,500
<1,000
<1.0
<5,000
<1.0
0.0
<1,000
<1.0
<1.0
1. 1 -Dichloroethene (ug/L)
7.0
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
<1.0
1.7
cis-1.2-Dichloroethene (ug/L)
70
NA
NA
29.2
10.5
7.6
0.0
<10
NA
NA
0.0
<10.0
<1.0
<1.0
NA
NA
NA
24.5
<5,000
7.9
<1.0
<1,000
4
6.4
trans-1,2-Dichloroethene (ug/L)
70
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
0.0
<1.0
1,2-Dichloropropane (ug/L)
0.56
<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
0,000
<1.0
<1.0
Ethylbenzene (ug/L)
29
NA
<1.0
<1.0
<1.0
0.0
NA
NA
NA
NA
<1.0
<10.0
0.0
NA
NA
NA
NA
<1.0
<5,000
<1.0
NA
<1,000
NA
<1.0
Trichloroethene (ug/L)
2.8
<1.0
3
52.1
8.6
11.2
<1.0
<10
0.0
<2.5
1
<10.0
<1.0
<1.0
<100
<2,500
<1,000
56.1
<5,000
32.5
<1.0
<1,000
25
19.5
Tetrachloroethene (ug/L)
0.7
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
48,200
62,000
Toluene (ug/L)
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
10
NA
0,000
NA
11
1. 1. 1 -Trichloroethane (ug/L)
200
.1.4
4.8
3
4.8
8.8
<1.0
<10
4.4
5.6
0.0
<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
1,1,2-Trichloroethane (ug/L)
1Xylenes,
none
<1.0
<1.0
0.0
<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
18
22.3
Total u 2
530
NA
<2.0
<2.0
<2.0
<2.0
NA
NA
NA
N
<2.0
<20.0
NA
N
2
1000
<2.0NA
<2,000
NA
<1.0
Total VOCs u
41
85
266
206
402
490
298
86
116
127
150
113
49
19,000
82,000
60,000
66
4,000 1
73.251 1
27,600 1
48,800
48,250
62,069
Sample Location:
DW4
DWS
DW-6
DW-10
DW-11
722/94 A
7/11/96 A
12/2/98 B
10/28/99 B
323/00 B
9/14/00 B
10/19/00 B
3/8/01 B
822/01 B
7/15196 A
7/15/96 B
12/2/98 B
1027/99 B
322/00 B
9/13/00 B
317/01 B
821/01 B
7/15/96 A
7/15/96 B
7/15/96 A
7/15/96 B
10/6/96 A
10/6/96 B
10/6196 A
10/6/96 B
122/98 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
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
NA
NA
<1.0
<1.0
<1.0
NA
NA
NA
NA
NA
NA
NA
NA
NA
NA
NA
<1.0
Bromoform (ug/L)
0.19
<100
<250
<1.0
<500
<1.0
<1.0
<50
<1000
<500
<1.0
<10
<1.0
<1.0
<1.0
<1.0
<1.0
<50
<1.0
<1.0
<1.0
<1.0
<0.50
<1.0
<0.50
<1.0
<1.0
1,2-Dichlorobenzene (ug/L)
none
<100
<250
<1.0
<500
<1.0
<1.0
<50
<1000
<500
<1.0
<10
<1.0
<1.0
<1.0
<1.0
<1.0
<50
<1.0
<1.0
<1.0
<1.0
<0.50
<1.0
<0.50
<1.0
<1.0
1.3-Dichlorobenzene (ug/L)
none
<100
<250
<1.0
<500
<1.0
<1.0
<50
<1000
<500
<1.0
<10
<1.0
<1.0
<1.0
<1.0
<1.0
<50
<1.0
151.0
<1.0
<1.0
<0.50
<1.0
<0.50
<1.0
<1.0
Methylene Chloride (ug/L)
5.0
<100
<1,200
<5.0
<2500
<5.0
<5.0
<250
<5000
<2500
<5
<10
<5.0
<5.0
<5.0
<5.0
<5.0
<250
<5 111!- a
<1.0
<5
<1.0
<2.5
<1.0
<2.5
<1.0
<5.0
Chloroform (ug/L)
0.19
<100
<250
<1.0
<500
<1.0
<1.0
<50
<1000
<500
20
31
20
23.1
25
23
28
<50
1.5
2.6
<1.0
3.1
<0.50
<0.19
7.1
5.4
<1.0
Chloromethane (ug/L)
none
<100
<250
<1.0
<500
<1.0
<1.0
<50
<1000
<500
<1.0
<10
<1.0
<1.0
<1.0
<1.0
<1.0
<50
<1.0
<2.0
<1.0
<2.0
<0.50
<2.0
<0.50
<2.0
<1.0
Carbon Tetrachloride (ug/L)
0.3
<100
<250
<1.0
<500
<1.0
<1.0
<50
<1000
<500
100
140
27
73.2
98.3
63
82
<50
<1.0
<1.0
<1.0
<1.0
<0.50
<0.30
<0.50
<0.30
<1.0
1,1-Dichloroethane (ug/L)
700
<100
<250
<1.0
<500
<1.0
<1.0
<50
<1000
<500
<1.0
<10
<1.0
<1.0
<1.0
<1.0
<1.0
<50
<1.0
<1.0
<1.0
<1.0
<0.50
<1.0
<0.50
<1.0
<1.0
1,2-Dichloroethane (ug/L)
0.38
<100
<250
<1.0
<500
<1.0
<1.0
<50
<1000
<500
2.7
<10
<1.0
<1.0
5
<1.0
12
<50
<1.0
<1.0
<1.0
<1.0
<0.50
<1.0
<0.50
<1.0
<1.0
Vinyl chloride (ug/L)
0.015
<100
<250
<1.0
<500
<1.0
<1.0
<50
<1000
<500
<1.0
<10
<1.0
<1.0
<1.0
<1.0
<1.0
<50
<1.0
<1.0
<1.0
<1.0
<0.50
<1.0
<0.50
<1.0
<1.0
1,1-Dichloroethene (ug/L)
7.0
<100
<250
<1.0
<500
<1.0
<1.0
<50
<1000
<500
<1.0
<10
<1.0
<1.0
<1.0
<1.0
<1.0
<50
<1.0
<1.0
<1.0
<1.0
<0.50
<1.0
<0.50
<1.0
<1.0
cis-1,2-Dichloroethene (ug/L)
70
NA
NA
97.7
<500
8.7
<1.0
<50
<1000
<500
NA
NA
14
22.1
21.8
20
32
<50
NA
NA
NA
NA
NA
NA
NA
NA
<1.0
trans-1,2-Dichloroethene (ug/L)
70
NA
NA
<1.0
<500
<1.0
<1.0
<50
<1000
<500
NA
NA
<1.0
<1.0
<1.0
<1.0
<1.0
<50
NA
NA
NA
NA
NA
NA
NA
NA
<1.0
1,2-Dichloropropane (ug/L)
0.56
<100
<250
<1.0
<500
<1.0
<1.0
<50
<1000
<500
<1.0
<10
<1.0
<1.0
<1.0
<1.0
<1.0
<50
<1.0
<1.0
<1.0
<1.0
<0.50
<0.20
<0.50
<0.20
<1.0
Ethylbenzene (ug/L)
29
NA
NA
<1.0
<500
<1.0
NA
NA
<1000
NA
NA
NA
<1.0
<1.0
<1.0
NA
NA
NA
NA
NA
NA
NA
NA
NA
NA
NA
<1.0
Trichloroethene (ug/L)
2.8
<100
<250
64.4
<500
20.4
<1.0
<50
<1000
<500
94
120
78
261
287
449
44
655
<1.0
<1.0
<1.0
<1.0
<0.50
<1.0
<0.50
<1.0
<1.0
Tetrachloroethene (ug/L)
0.7
10,000
16,000
8,600
23,900
24,900
<1.0
<50
<1000
<500
19
28
54
52.3
90
70
45
<50
1.1
1.6
<1.0
1.9
<0.50
<0.70
<0.50
<0.70
<1.0
Toluene (ug/L)
1,000
NA
NA
<1.0
<500
<1.0
NA
NA
<1000
NA
NA
NA
<1.0
<1.0
<1.0
NA
NA
NA
NA
NA
NA
NA
NA
NA
NA
NA
<1.0
lAl-Trichloroethane (ug/L)
200
<100
<250
<1.0
<500
<1.0
<1.0
<50
<1000
<500
<1.0
<10
<1.0
<1.0
<1.0
<1.0
<1.0
<50
<1.0
<1.0
<1.0
<1.0
<0.50
<1.0
<0.50
<1.0
<1.0
1,1,2-Tdchloroethane(ug/L)
none
<100
<250
<1.0
<500
<1.0
<1.0
<50
<1000
<500
<1.0
<10
<1.0
<1.0
<1.0
<1.0
<1.0
<50
<1.0
<1.0
<1.0
<1.0
<0.50
<1.0
<0.50
<1.0
<1.0
X lenes, Total u /L
530
NA
NA
<2.0
<1,000
<2.0
NA
NA
<1000
NA
NA
NA 1
<2.0
<2.0
<2.0
NA
NA
NA
NA
NA
NA
NA
NA
NA
NA
NA
<2.0
Total VOCs (ug/L)
10,000
16,000 1
8.762 1
23.900 1
24,929
0
0
0
0
236 1
319 1
193
432
527
625
243 1
655
3
4
0
5
0
0
7
5
0
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 Hist summery-ds 1 of 3 Revised 11/1W1

TABLE 6
Historical Groundwater Analysis Data Summary - Deep Wells
W. P. Ballard and Downgradient Properties
Greensboro, North Carolina
Sample Location:
Sample Date:
Analysis Method:
DW-7
OW-8
DWG
DW-14
7/15/96 A
EPA 601
7/15/96 B
EPA 601
122/98 B
EPA 601
10/26/99 B
EPA 601
3123/00 B
EPA 601
9/12/00 B
EPA 601
3/7101 B
EPA 601
8/21101 B
EPA 601
7/15/96 A
EPA 601
7/15/96 B
EPA 601
12/2/98 B
EPA 601
10/26/99 B
EPA 601
323/00 B
EPA 601
9/13/00 B
EPA 601
318/01 B
EPA 601
8/21/01 B
EPA 601
7/15/96 A
EPA 601
7/15/96 B
EPA 601
10/6/96 A
EPA 601
10/6/96 B
EPA 601
12/2/98 B
EPA 601
10/25/99 B
EPA 601
3/21/00 B
EPA 601
9/13/00 B
EPA 601
3/6/01 B
EPA 601
820/01 B
EPA 601
Analyte
NCAC 2L
Benzene (ug/L)
Bromoform (ug/L)
1,2-Dichlorobenzene (ug/L)
1.3-Dichlorobenzene (ug/L)
Methylene Chloride (ug/L)
Chloroform (ug/L)
Chloromethane (ug/L)
Carbon Tetrachloride (ug/L)
1. 1 -Dichloroethane (ug/L)
1,2-Dichloroethane (ug/L)
Vinyl chloride (ug/L)
1. 1 -Dichlorcethene (ug/L)
cis-1,2-Dichloroethene (ug/L)
trans-1.2-Dichloroethene (ug/L)
1,2-Dichloropropane (ug/L)
Ethylbenzene (ug/L)
Trichloroethene (ug/L)
Tetrachloroethene (ug/L)
Toluene (ug/L)
1. 1. 1 -Trichloroethane (ug/L)
1,1,2-Trichloroethane (ug/L)
X lenes, Total u /L
Total VOCs (ug/L)
1.0
0.19
none
none
5.0
0.19
none
0.3
700
0.38
0.015
7.0
70
70
0.56
29
2.8
0.7
1,000
200
none
530
::i;:w.
NA
<5
<5
<5
<25
<5
<5
<5
<5
<5
<5
<5
NA
NA
<5
NA
<5
230
NA
<5
<5
NA
230
NA
<1.0
<1.0
<1.0
<1.0
2.9
<2.0
<1.0
<1.0
<1.0
<1.0
<1.0
NA
NA
2.1
NA
1.0
180
NA
<1.0
<1.0
NA
185
<1.0
<1.0
<1.0
<1.0
<5.0
<1.0
<1.0
<1.0
<1.0
<1.0
<1.0
<1.0
<1.0
<1.0
<1.0
<1.0
10
205
<1.0
<1.0
<1.0
<2.0
215
<10.0
<10.0
<10.0
<10.0
<50.0
<10.0
<10.0
<10.0
<10.0
<10.0
<10.0
<10.0
<10.0
<10.0
15
<10.0
<10.0
221
<10.0
<10.0
<10.0
<20.0
236
<1.0
<1.0
<1.0
<1.0
<5.0
<1.0
NA
<1.0
<1.0
<1.0
<1.0
<1.0
<1.0
<1.0
<1.0
<1.0
2
270
<1.0
<1.0
<1.0
<2.0
NA
<1.0
<1.0
<1.0
<5.0
<1.0
<1.0
<1.0
<1.0
<1.0
<1.0
<1.0
<1.0
<1.0
<1.0
NA
<1.0
295
NA
<1.0
<1.0
NA
NA
<1.0
<1.0
<1.0
<5.0
<1.0
<1.0
<1.0
<1.0
<1.0
<1.0
<1.0
<1.0
<1.0
7
NA
2
240
NA
<1.0
<1.0
NA
NA
<5
<5
<5
<25
<5
<5
<5
<5
<5
<5
<5
<5
<5
<5
NA
<5
226
NA
<5
<5
NA
NA
<100
<100
<100
<500
<100
<100
<100
<100
<100
<100
<100
NA
NA
<100
NA
630
3,700
NA
<100
<100
NA
NA
<100
<100
<100
<100
<100
<200
<100
<100
<100
<100
<100
NA
NA
<100
NA
440
2,600
NA
<100
<100
NA
<50.0
<50.0
<50.0
<50.0
<250
<50.0
<50.0
<50.0
<50.0
<50.0
<50.0
<50.0
280
<50.0
<50.0
<50.0 -
380
1,620
<50.0
<50.0
<50.0
<100
<1,0
<1,0
<1.0
<1.0
<5.0
5.6
<1.0
19.7
<1,0
<1.0
<1.0
<1.0
530
2.1
1.1
<1.0
1,300
4,290
<1.0
<1.0
<1.0
<2.0
<1.0
<1.0
<1.0
<1.0
<5.0
3
<1.0
28.1
<1.0
<1.0
<1.0
<1.0
445
22.8
<1.0
<1.0
1,360
5,150
<1.0
<1.0
<1.0
<2.0
NA
<1.0
<1.0
<1.0
<5.0
<1.0
<1.0
<1.0
<1.0
<1.0
<1.0
<1.0
420
<1.0
<1.0
NA
1,380
4,020
NA
<1.0
<1.0
NA
NA
<1.0
<1.0
<1.0
<5.0
12
<1.0
20
<1.0
3
<1.0
<1.0
320
1
<1.0
NA
545
1,340
NA
<1.0
2
NA
NA
<50
<50
<50
<250
<50
<50
<50
<50
<50
<50
<50
<50
<50
<50
NA
<50
1,100
NA
<50
<50
NA
NA
<1.0
<1.0
<1.0
<5
3.4
<1.0
<1.0
<1.0
<1.0
<1.0
<1.0
NA
NA
<1.0
NA
<1.0
<1.0
NA
<1.0
<1.0
NA
NA
<1.0
<1.0
<1.0
<1.0
4.5
<2.0
<1.0
<1.0
<1.0
<1.0
<1.0
NA
NA
<1.0
NA
<1.0
3.4
NA
<1.0
<1.0
NA
NA
<0.50
<0.50
<0.50
5.3
1.5
<0.50
<0.50
<0.50
<0.50
<0.50
<0.50
NA
NA
<0.50
NA
<0.50
<0.50
NA
<0.50
<0.50
NA
NA
<1.0
<1.0
<1.0
6,
1.E
<2.0
<0.30
<1.0
<1.0
<1,0
<1.0
NA
NA
<0.20
NA
<1.0
<0.70
NA
<1.0
<1.0
NA
<1.0
<1.0
<1.0
<1.0
<5.0
<1.0
<1.0
<1.0
<1.0
<1.0
<1.0
<1.0
NA
<1.0
<1.0
<1.0
<1.0
<1.0
<1.0
<1.0
<1.0
<2.0
<1.0
<1.0
<1.0
<1.0
<5
<1.0
<1.0
<1.0
<1.0
<1.0
1.1
<1.0
3.1
<1.0
<1.0
<1.0
84.5
304
<1.0
<1.0
<1.0
<2.0
<1.0
<1.0
<1.0
<1.0
<5.0
<1.0
<1.0
<1.0
<1.0
<1.0
<1.0
<1.0
<1.0
<1.0
<1.0
<1.0
13.3
83.7
<1.0
<1.0
<1.0
<2.0
NA
<1.0
<1.0
<1.0
<5.0
<1.0
<1.0
<1.0
<1.0
<1.0
<1.0
<1.0
<1.0
<1.0
<1.0
NA
93
252
NA
<1.0
<1.0
NA
NA
<1.0
<1.0
<1.0
<5.0
<1.0
<1.0
<1.0
<1.0
<1.0
<1.0
<1.0
2
<1.0
<1.0
NA
57
204
NA
<1.0
<1.0
NA
NA
NA
<10
<10
<50
<10
<10
<10
<10
<10
<10
<10
<10
<10
<10
<10
.116
455
NA
<10
<10
NA
272
295
249
226
4,330
3,040
2,280
6,149
7,009
5,820
2,243
1,100
3
8
7
7 ,
0
393
971
345 1
263
571
Sample Location:
DW-12
DW-13
DMP4
BMIN-1
Sample Date:
10/6/96 A
10/6/96 B
12/2/98 B
1025/99 B
321/00 B
9/13100 B
1025/99 B
321/00 B
9/13/00 B
Y7/01 B
821/01 B
121/99 B
1025/99 B
321/00 B
9/13/00 B
316/01 B
821/01 B
1028/99 B
323100 B
9/8/00 B
10/18/00 B
3/8101 B
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
EPA 601
EPA 601/60
EPA 601/60
EPA 601
Analyte
NCAC 2L
Benzene (ug/L)
1.0
NA
NA
<1.0
<1.0
<1.0
NA
<1.0
<1.0
NA
NA
NA
NA
<1.0
<1.0
NA
NA
NA
NS-DRY
<1.0
<20.0
<20.0
NA
Bromoform (ug/L)
0.19
<0.50
<1.0
<1.0
<1.0
<1.0
<1.0
<1.0
<1.0
<1.0
<1.0
<10
<10.0
<1.0
<1.0
<1.0
<1.0
<5000
NS-DRY
<1.0
<20.0
<20.0
<1.0
1,2-Dichlorobenzene (ug/L)
none
<0.50
<1.0
<1.0
<1.0
<1.0
<1.0
<1.0
<1.0
<1.0
<1.0
<10
<10.0
<1.0
<1.0
<1.0
<1.0
<5000
NS-DRY
<1.0
<20.0
<20.0
<1.0
1.3-Dichlorobenzene (ug/L)
none
<0.50
<1.0
<1.0
<1.0
<1.0
<1.0
<1.0
<1.0
<1.0
<1.0
<10
<10.0
<1.0
<1.0
<1.0
<1.0
<5000
NS-DRY
<1.0
<20.0
<20.0
<1.0
Methylene Chloride (ug/L)
5.0
<2.5
<1.0
<5.0
<5.0
<5.0
<5.0
<5.0
<5.0
<5.0
<5.0
<50
<50.0
<5.0
<5.0
<5.0
<5.0
<5000
NS-DRY
<5.0
<100
<100
<5.0
Chloroform (ug/L)
0.19
4.1
4.2
<1.0
<1.0
<1.0
<1.0
<1.0
<1.0
<1.0
<1.0
<10
<10.0
5.7
3.0
<1.0
10
<5000
NS-DRY
<1.0
<20.0
<20.0
<1.0
Chloromethane (ug/L)
none
<0.50
<2.0
<1.0
<1.0
<1.0
<1.0
<1.0
<1.0
<1.0
<1.0
<10
<10.0
<1.0
<1.0
<1.0
<1.0
<5000
NS-DRY
<1.0
<20.0
<20.0
<1.0
Carbon Tetrachloride (ug/L)
0.3
<0.50
<0.030
<1.0
<1.0
<1.0
<1.0
<1.0
<1.0
<1.0
1
<10
<10.0
17.1
27.1
<1.0
18
<5000
NS-DRY
<1.0
<20.0
<20.0
<1.0
1,1-Dichloroethane (ug/L)
700
<0.50
<1.0
<1.0
<1.0
<1.0
<1.0
<1.0
<1.0
<1.0
<1.0
<10
<10.0
<1.0
<1.0
<1.0
<1.0
<5000
NS-DRY
<1.0
<20.0
<20.0
<1.0
1,2-Dichloroethane (ug/L)
0.38
<0.50
<1.0
<1.0
<1.0
<1.0
<1.0
<1.0
<1.0
<1.0
<1.0
<10
<10.0
1.0
<1.0
<1.0
<1.0
<5000
NS-DRY
<1.0
<20.0
<20.0
<1.0
Vinyl chloride (ug/L)
0.015
<0.50
<1.0
<1.0
<1.0
<1.0
<1.0
<1.0
<1.0
<1.0
<1.0
<10
<10.0
<1.0
<1.0
<1.0
<1.0
<5000
NS-DRY
<1.0
<20.0
<20.0
<1.0
1. 1 -Dichloroethene (ug/L)
7.0
<0.50
<1.0
<1.0
<1.0
<1.0
<1.0
<1.0
<1.0
<1.0
<1.0
<10
<10.0
1.2
<1.0
<1.0
<1.0
<5000
NS-DRY
<1.0
<20.0
<20.0
<1.0
cis-1,2-Dichlorcethene (ug/L)
70
NA
NA
<1.0
<1.0
<1.0
<1.0
5.0
5.6
<1.0
20
<10
259
275
280
460
350
<5000
NS-DRY
<1.0
<20.0
<20.0
5
trans-1,2-Dichloroethene (ug/L)
70
NA
NA
<1.0
<1.0
<1.0
<1.0
<1.0
<1.0
<1.0
<1.0
<10
<10.0
2.8
31.2
<1.0
30
<5000
NS-DRY
4.0
<20.0
<20.0
2
1,2-Dichloropropane (ug/L)
0.56
<0.50
<0.20
<1.0
<1.0,
<1.0
<1.0
<1.0
<1.0
<1.0
<1.0
<10
<10.0
<1.0
<1.0
<1.0
<1.0
<5000
NS-DRY
<1.0
<20.0
<20.0
<1.0
Ethylbenzene (ug/L)
29
NA
NA
<1.0
<1.0
<1.0
NA
<1.0
<1.0
NA
NA
NA
NA
<1.0
<1.0
NA
NA
NA
NS-DRY
<1.0
<20.0
<20.0
NA
Trichloroethene (ug/L)
2.8
<0.50
<1.0
<1.0
<1.0
<1.0
<1.0
21.7
31.7
44
89
32
<10.0
1,180
1,080
1,340
1,250
<5000
NS-DRY
39.9
52
28
43
Tetrachlorcethene (ug/L)
0.7
<0.50
<0.70
<1.0
<1.0
<1.0
<1.0
421
720
680
850
447
3460
4,500
5,600
4,090
2,940
<5000
NS-DRY
1,670
802
380
728
Toluene (ug/L)
1.000
NA
NA
<1.0
<1.0
<1.0
NA
<1.0
<1.0
NA
NA
NA
NA
<1.0
<1.0
NA
NA
NA
NS-DRY
<1.0
<20.0
<20.0
NA
1,1,1-Trichloroethane(ug/L)
200
<0.50
<1.0
<1.0
<1.0
<1.0
<1.0
<1.0
<1.0
<1.0
<1.0
<10
<10.0
<1.0
<1.0
<1.0
<1.0
<5000
NS-DRY
<1.0
<20.0
<20.0
<1.0
1.1,2-Trchloroethane (ug/L)
none
<0.50
<1.0
<1.0
<1.0
<1.0
<1.0
<1.0
<1.0
<1.0
<1.0
<10
<10.0
<1.0
<1.0
<1.0
2
<5000
NS-DRY
<1.0
<20.0
<20.0
<1.0
X lenes, Total u /L
530
NA
NA I
<2.0 1
<2.0
<2.0
NA
<2.0
<2.0 1
NA
NA
NA
NA
<2.0
<2.0
NA
NA
NA
NS-DRY
<2.0
<40.0
<40.0
NA
Total VOCs u /L
4
4
0
0
0
0
448
757
724
960
479
3,719
5,983
7,021
5,890
4,600
0
0
1,714
854
408
778
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 Hist summary.ads 2 of 3
Redsed 11/1 &Ot

TABLE 6
Historical Groundwater Analysis Data Summary - Deep Wells
W. P. Ballard and Downgradient Properties
Greensboro, North Carolina
Sample Location:
DW-15
DMP-1
DMP-2
DMP.3
PT -ID
10/25/99 B
3/21/00 B
9/13/00 B
3/6/01 B
8/20/01 B
1/21/99 B
10/27/99 B
3122/00 B
9/13/00 B
3/7/01 B
8/23/01
1/21199 B
10/27/99 B
3/22/00 B
9/13/00 B
317101 B
8/21/01 B
1/21/99 B
10/26/99 B
3/25/0o B
9/12/00 B
3/7/01 B
8/21/01
8/29/97 B
3/23/00 B
9/8/00 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
EPA 601
EPA 001
EPA 601
EPA 601
EPA 601
EPA 8260A
EPA 601/602
EPA 601
Analyte
NCAC 2L
Benzene (ug/L)
1.0
<1.0
<1.0
NA
NA
NA
1.6
<1.0
NA
NA
NA
NA
<1.0
<1.0
NA
NA
NA
NA
<1,0
<1.0
NA
NA
NA
7.8
<1.0
NA
Bromoform (ug/L)
0.19
<1.0
<1.0
<1.0
<1.0
<10
<1.0
<1.0
<1.0
<1.0
<1.0
<500
<5.0
<1.0
<1.0
<1.0
<1.0
<50
<5.0
<1.0
<1.0
<1.0
<1.0
<5
<5.0
<1.0
<100
1,2-Dichlorobenzene (ug/L)
none
<1.0
<1.0
<1.0
<1.0
<10
<1.0
4.0
7.5
<1.0
6
<500
<5.0
<1.0
<1.0
<1.0
<1.0
<50
<5.0
<1.0
<1.0
<1.0
<1.0
<5
<10
<1.0
<100
1.3-Dichlorobenzene (ug/L)
none
<1.0
<1.0
<1.0
<1.0
<10
<1.0
1.1
<1.0
<1.0
<1.0
<500
<5.0
<1.0
<1.0
<1.0
<1.0
<50
<5.0
<1.0
<1.0
<1.0
<1.0
<5
<10
<1.0
<100
Methylene Chloride (ug/L)
5.0
<5
<5.0
<5.0
<5.0
<10
<5.0
8.0
12.1
<5.0
<1.0
<2500
<5.0
<5.0
<5.0
<5.0
<5.0
<50
<25.0
<5,0
<5.0
<5.0
<5.0
<25
<5
<5.0
<500
Chloroform (ug/L)
0.19
<1.0
<1.0
<1.0
<1.0
<10
6.0
<1.0
<1.0
<1.0
<1.0
<500
7.5
3.5
4.4
<1.0
4
<50
<5.0
<1.0
<1.0
<1.0
<1.0
<5
7.6
1.7
<100
Chloromethane (ug/L)
none
<1.0
<1.0
<1.0
<1.0
<10
<1.0
<1.0
<1.0
<1.0
<1.0
<500
<5.0
<1.0
<1.0
<1.0
<1.0
<50
<5.0
<1.0
<1.0
<1.0
<1.0
<5
<10
<1.0
<100
Carbon Tetrachloride (ug/L)
0.3
<1.0
<1.0
<1.0
<1.0
<10
<1.0
<1.0
<1.0
<1.0
<1.0
<500
<5.0
8.2
12.4
<1.0
4
<50
<5.0
<1,0
<1.0
<1.0
<1.0
<5
<5.0
4.4
<100
1,1-Dichloroethane (ug/L)
700
<1.0
<1.0
<1.0
<1.0
<10
<1.0
<1.0
<1.0
<1.0
<1.0
<500
<5.0
<1.0
<1.0
<1.0
<1.0
<50
<5.0
<1.0
<1.0
<1.0
<1.0
<5
<5.0
<1.0
<100
1,2-Dichloroethane (ug/L)
0.38
<1.0
<1.0
<1.0
<1.0
<10
<1.0
8.4
14.6
<1.0
11
<500
<5.0
2.8
<1.0
<1.0
2
<50
<5.0
<1.0
<1.0
<1.0
<1.0
<5
<5.0
<1.0
<100
Vinyl chloride (ug/L)
0.015
1.3
<1.0
<1.0
<1.0
<10
<1.0
3.6
6.4
<1.0
2
<500
<5.0
<1.0
<1.0
<1.0
<1.0
<50
<5.0
<1.0
<1.0
<1.0
<1.0
<5
<10
<1.0
<100
1. 1 -Dichloroethene (ug/L)
7.0
<1.0
<1.0
<1.0
<1.0
<10
<1.0
3.5
4.8
<1.0
4
<500
<5.0
<1.0
<1.0
<1.0
<1.0
<50
<5.0
<1.0
<1.0
<1.0
<1.0
<5
5.4
<1.0
<100
cis-1,2-Dichloroethene (ug/L)
70
2.7
3.9
<1.0
4
<10
1,520
3,440
4,390
2,200
2,280
<500
24.5
6.8
22.5
<1.0
13
<50
<5.0
10.4
9.6
<1.0
9
<5
3,900
1.4
<100
trans-1,2-Dichloroethene (ug/L)
70
<7.0
<1.0
<1.0
<1.0
<10
24.0
16.9
18.9
<1.0
10
<500
<5.0
<1.0
<1.0
<1.0
<1.0
<50
<5.0
<1.0
<1.0
<1.0
<1.0
<5
<5.0
<1.0
<100
1,2-Dichloropropane (ug/L)
0.56
<1.0
<1.0
<1.0
<1.0
<10
28.0
28.6
<1.0
<1.0
17
<500
<5.0
<1.0
<1.0
<1.0
<1.0
<50
<5.0
<1.0
<1.0
<1.0
<1.0
<5
<5.0
<1.0
<100
Ethylbenzene (ug/L)
29
<1.0
<1.0
NA
NA
<10
NA
<1.0
<1.0
NA
<1.0
NA
NA
<1.0
<1.0
NA
NA
NA
NA
<1.0
<1.0
NA
NA
NA
<5.0
<1.0
NA
3 Trichloroethene (ug/L)
2.8
71.7
110
164
112
92
<1.0
355
390
300
320
<500
<5.0
505
678
865
875
1,480
<5.0
90
85
68
55
21.5
36
1,950
210
Tetrachloroethene (ug/L)
0.7
398
995
688
476
469
60.7
60
395
270
190
<500
254
329
525
421
275
150
580
562
799
474
289
144
1,900
5,800
3,510
Toluene (ug/L)
1,000
<1.0
<1.0
NA
NA
NA
NA
<1.0
<1.0
NA
NA
NA
NA
<1.0
<1.0
NA
NA
NA
NA
<1.0
<1.0
NA
NA
NA
5.8
<1.0
NA
1,1,1-Trichloroethane (ug/L)
200
<1.0
<1.0
<1.0
<1.0
<10
<1.0
<1.0
<1.0
<1.0
<1.0
<500
<5.0
<1.0
<1.0
<1.0
<1.0
<50
<5.0
<1.0
<1.0
<1.0
<1.0
<5
<5.0
<1.0
<100
1,1,2-Trichloroethane (ug/L)
none
<1.0
<1.0
<1.0
<1.0
<10
<1.0
<1.0
<1.0
<1.0
<1.0
<500
<5.0
<1.0
<1.0
<1.0
<1.0
<50
<5.0
<1.0
<1.0
<1.0
<1.0
<5
<5.0
1.2
<100
X lenes, Total u /L
530
<2.0
<2.0
NA
NA
NA
NA
<2.0
<2.0
NA
NA
NA
NA
<2.0
<2.0
NA
NA
NA
NA
<2.0
<2.0
NA
NA
NA
<5.0
<2.0
NA
Total VOCs u /L
474
1,109
852
592
561
1,639
3.931
5,239
2,770
2,840
0
2B6
855
1,242
1,286
1.173
1,630
580
662
894
542
353
166
5,863
7,759
3,720
Sample Location:
BMW-2
13MW-3
BMW-4
PT-2113
PT-3D
-PT-4D
PT-5D
10/28/99 B
3/23/00 B
9/7/00 B
10/18/00 B
3/8/01 B
8/22/01
10/26/99 B
321/00 B
9/12/00 B
10/25/99 B
3/21/00 B
9/13/00 B
3/6/01 B
8/29/97 B
1 3/23/00 B
9/8/00 B
8/29/97 B
3/23/00 B
9/9/00 B
8/29/97 B
3/23/00 B
9/9/00 B
8/29/97 B
3/23/00 B
9/8/00 B
Sample Date:
Analysis Method:
EPA 601
EPA 601
EPA 601/60
EPA 601/60
EPA 601
EPA 601
EPA 601
EPA 601
EPA 601
EPA 601
EPA 601
EPA 601
EPA 601
EPA 8260A
JEPA 601/60
EPA 601/60
EPA 8260A
EPA 601/60
EPA 601
EPA 8260A
EPA 601/60
EPA 601
EPA 8260A
EPA 601/60
EPA 601/602
Analyte
NCAC 2L
Benzene (ug/L)
1.0
<500
<1.0
<1,000
<1,000
NA
<1.0
<10.0
<1.0
NA
<1.0
<1.0
NA
NA
<25
<1.0
<100
<25
<1.0
NA
<500
<1.0
NA
<500
150
800
Bromoform (ug/L)
0.19
<500
<1.0
<1,000
<1,000
<1.0
<1.0
<10.0
<1.0
<1.0
<1.0
<1.0
<1.0
<1.0
<25
<1.0
<100
<25
<1.0
<100
<500
<1.0
<500
<500
<1.0
<500
1,2-Dichlorobenzene (ug/L)
none
<500
<1.0
<1,000
<1,000
<1.0
<1.0
<10.0
<1.0
<1.0
<1.0
0.0
<1.0
<1.0
<50
0.0
<100
<50
<1.0
<100
<1,000
<1.0
<500
<1,000
0.0
<500
1.3-Dichlorobenzene (ug/L)
none
<500
<1.0
<1,000
<1,000
0.0
0.0
<10.0
0.0
<1.0
<1.0
0.0
<1.0
<1.0
<50
0.0
<100
<50
<1.0
<100
<1,000
0.0
<500
<1,000
<1.0
<500
Methylene Chloride (ug/L)
5.0
<2500
<5.0
<5,000
<5,000
<5.0
<5.0
<50.0
<5.0
<5.0
<5.0
<5.0
<5.0
<5.0
<25
<5.0
<500
<25
<5.0
<500
<500
<5.0
<500
<500
<5.0
<2,500
Chloroform (ug/L)
0.19
<500
<1.0
0,000
0,000
<1.0
<1.0
<10.0
<1.0
<1.0
<1.0
<1.0
<1.0
<1.0
<25
<1.0
<100
26
26.5
<100
<500
11.1
<500
<500
2.3
<500
Chloromethane (ug/L)
none
<500
<1.0
<1,000
<1,000
0.0
0.0
<10.0
<1.0
0.0
<1.0
<1.0
<1.0
<1.0
<50
<1.0
<100
<25
<1.0
<100
0,000
<1.0
<500
<1,000
<1.0
<500
Carbon Tetrachloride (ug/L)
0.3
<500
<1.0
<1,000
<1,000
0.0
<1.0
<10.0
0.0
0.0
0.0
<1.0
<1.0
<1.0
<25
1.8
<100
82
149
<100
<500
15
<500
<500
<1.0
<500
1. 1 -Dichloroethane (ug/L)
700
<500
<1.0
0,000
0,000
1
<1.0
<10.0
<1.0
0.0
0.0
<1.0
<1.0
0.0
<25
<1.0
<100
<25
<1.0
<100
<500
<1.0
<500
<500
<1.0
<500
1,2-Dichloroethane (ug/L)
0.38
<500
<1.0
0,000
<1,000
<1.0
<1.0
<10.0
<1.0
<1.0
0.0
<1.0
<1.0
0.0
<25
<1.0
<100
<25
<1.0
<100
<500
0.0
<500
<500
27.5
<500
Vinyl chloride (ug/L)
0.015
<500
<1.0
<1,000
<1,000
0.0
<1.0
<10.0
0.0
<1.0
<1.0
0.0
0.0
<1.0
<50
<1.0
<100
<50
<1.0
<100
<1,000
0.0
<500
<1,000
<1.0
<500
1,1-Dichloroethene (ug/L)
7.0
<500
19.7
<1,000
0,000
21
45.2
<10.0
<1.0
<1.0
0.0
<1.0
<1.0
<1.0
<25
<1.0
<100
<25
<1.0
<100
<500
3.8
<500
<500
<1.0
<500
cis-1,2-Dichloroethene (ug/L)
70
<500
<1.0
<1,000
<1,000
0.0
13,100
<10.0
<1.0
0.0
<1.0
<1.0
0.0
11
<25
<1.0
<100
<25
21.6
<100
1,100
1,750
1,150
<500
25.2
<500
trans-1,2-Dichloroethene (ug/L)
70
<500
4.9
<1,000
<1,000
8
<1.0
<10.0
<1.0
<1.0
5.5
<1.0
0.0
<1.0
<25
<1.0
<100
<25
<1.0
<100
<500
11.4
<500
<500
0.0
<500
1,2-Dichloropropane (ug/L)
0.56
<500
<1.0
<1,000
<1,000
<1.0
<1.0
18
11.1
0.0
<1.0
<1.0
<1.0
<1.0
<25
<1.0
<100
<25
<1.0
<100
<500
<1.0
<500
<500
<1.0
<500
Ethylbenzene (ug/L)
29
<500
<1.0
<1,000
<1,000
NA
<1.0
<10.0
0.0
NA
0.0
<1.0
NA
NA
<25
<1.0
<100
<25
<1.0
NA
<500
<1.0
NA
<500
7.6
<500
Trichloroethene (ug/L)
2.8
<500
70.1
0,000
0,000
440
2,300
<10.0
3.2
<1.0
118
8.1
84
79
<25
25
<100
4,800
5,200
6,390
9,200
16,400
15,400
<500
68
<500
Tetrachloroethene (ug/L)
0.7
48,800
110,000
45,700
53,500
33,200
30,400
260
448
278
607
98.4
244
234
440
5,510
2,440
230
500
140
930
2,150
1,350
17,000
37,000
18,300
Toluene (ug/L)
1,000
<500
3
<1,000
0,000
NA
1.9
<10.0
4
NA
0.0
<1.0
NA
NA
<25
<1.0
<100
<25
<1.0
NA
<500
<1.0
NA
<500
410
600
1.1,1-Trichloroethane (ug/L)
200
<500
4.1
0,000
<1,000
4
<1.0
<10.0
<1.0
<1.0
0.0
<1.0
<1.0
<1.0
<25
<1.0
<100
<25
<1.0
<100
<500
<1.0
<500
<500
<1.0
<500
1,1,2-Trichloroethane (ug/L)
none
<500
<1.0
<1,000
<1.000
0.0
8.9
<10.0
<1.0
0.0
<1.0
<1.0
<1.0
<1.0
<25
1.8
<100
<25
<1.0
<100
<500
2.2
<500
<500
16.6
<500
X lenes, Total (ug/L)
530
0,000
1.1
<2,000
<2,000
NA
<1.0
<20.0
<2.0
NA
<2.0
<2.0
NA
NA
<25
<2.0
<200
<25 1
<2.0
NA 1
<500
<2.0
NA
<500
90.5
<1,000
Total VOCs (ug/L)48,800
110,103
45,700
53,500
33,674
45,856
278 1
466
278
731 1
107
328
324
440
5,539
2,440
5,138
5,897
6,530
11,230
20,344
17,900
17,000
37,798 1
19,700
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 Hist summery.bs 303 Revised 11/18/01

TABLE 7
Summary of Soil Analytical Results
Source Area (Phase III)
W.P. Ballard Property
Greensboro, NC
Sample ID
Carbon
Chloroform
cis-1,2-
Napthalene
1,1,1,2-
1,1,2,2-
Tetrachloro-
1,1,2-
Trichloro-
tetrachloride
Dichloro-
Tetrachloro-
Tetrachloro-
ethene
Trichloro-
ethane
(sample depth)
(mg/kg)
(mg/kg)
ethene
(mg/kg)
(mg/kg)
ethane
(mg/kg)
ethane
(mg/kg)
(mg/kg)
ethane
(mg/kg)
(mg/kg)
GP-7-10-01-1 (10-11 ft)
0.4044
3.382
<0.1471
0.4412
2.515
0.1691
2537.0
0.7794
0.8162
GP-7-10-01-2 ( 8-10 ft)
<0.0020
<0.0020
<0.0020
<0.0049
<0.0020
<0.0020
0.0028
<0.0020
<0.0020
GP-7-10-01-3 ( 10-12 ft)
<0.0024
<0.0024
0.0149
<0.0061
<0.0024
<0.0024
0.0051
<0.0024
<0.0024
NOTES:
1) Samples analyzed using USEPA SW846 Method 8260
2) GP-7-10-01-1 obtained at the location of the former PCE AST.,
3) GP-7-10-01-2 obtained from the PCE/Petroleum hydrocarbon commingled plume.
4) GP-7-10-01-3 obtained from the location of the former gasoline UST.
5) Analysis performed by Test America.
6) Sampled collected on July 10, 2001 using Geoprobe direct push method.

TABLE 8
Summary of Soil Vapor Monitoring Results
August 23, 2001
W.P. Ballard and Downgradient Properties
Greensboro, North Carolina
Sample Identification
Compound
SVMP-1
SVMP-2
SVMP-3
SVMP-4
SVMP-5
SVMP-6
SVMP-7
SVMP-8
SVMP-9
SVMP-10
SVMP-11
SVMP-12
Bromodichloromethane
<0.005
<0.005
<0.005
<0.005
<O.005
<0.005
<0.005
<0.005
<0.005
<0.005
NS
<0.005
Bromoform
<0.005
<0.005
<0.005
<0.005
<0.005
<0.005
<0.005
<0.005
<0.005
<0.005
NS
<0.005
2-Chloroethylvinylether
NA
NA
NA
NA
NA
NA
NA
NA
NA
NA
NS
NA
Dibromochloromelhane
<0.005
<0.005
<0.005
<0.005
<0.005
<0.005
<0.005
<0.005
<0.005
<0.005
NS
<0.005
Dichlorodifluoromelhane
NA
NA
NA
NA
NA
NA
NA
NA
NA
NA
NS
<0.005
Trichlorofluoromethane
<0.005
<0.005
<0.005
<0.005
<0.005
<0.005
<0.005
<0.005
<0.005
<0.005
NS
<0.005
Vinyl Chloride
<3
<3
<3
<3
<3
<3
<3
<3
<3
<3
NS
<3
Chloromethane
<1
<1
<1
<1
<1
<1
<1
<1
<1
<t
NS
<1
Bromomethane
NA
NA
NA
NA
NA
NA
NA
NA
NA
NA
NS
NA
Chloroelhane
NA
NA
NA
NA
NA
NA
NA
NA
NA
NA
NS
NA
1,1-Dichloroethane
<0.001
<0.001
<0.01
0.021
<0.001
<0.001
<0.001
0.077
0.083
0.074
NS
<0.001
1-1,2-Dichloroethene
<0.01
<0.01
<0.01
<0.01
0.016
<0.01
<0.01
0.034
0.03
0.041
NS
0.085
1,2-Dichloropropane
<0.01
<0.01
<0.01
<0.01
<0.01
<0.01
<0.01
<0.01
<0.01
<0.01
NS
<0.01
1,1,2-Trichloroethene
<.005
<.005
<.005
<.005
<.005
<.005
<.005
<,005
<,005
<,005
NS
<.005
1,2-Dibromoethane
NA
NA
NA
NA
NA
NA
NA
NA
NA
NA
NS
NA
Chlorobenzene
<0.07
<0.07
<0.07
<0.07
<0.07
<0.07
<0.07
<0.07
<0.07
<0.07
NS
<0.07
c-1,3-Dichloropropene
<0.01
<0.01
<0.01
<0.01
<0.01
0.013
<0.01
<0.01
<0.01
<0.01
NS
<0.01
t-1,3-Dichloropropene
<0.01
<0.01
<0.01
<0.01
<0.01
<0.01
<0.01
<0.01
<0.01
<0.01
NS
<0.01
1.1,2,2-Telrachloroethane
<0.005
<0.005
<0.005
<0.005
<0.005
<0.005
<0.005
<0.005
<0.005
<0.005
NS
<0.005
1,2-Dichlorobenzene
<0.07
<0.07
<0.07
<0.07
<0.07
<0.07
<0.07
<0.07
<0.07
<0.07
NS
<0.07
1,3-Dichlorobenzene
<0.07
<0.07
<0.07
<0.07
<0.07
<0.07
<0.07
<0.07
<0.07
<0.07
NS
<0.07
1,4-Dichlorobenzene
<0.07
<0.07
<0.07
<0.07
<0.07
<0.07
<0.07
<0.07
<0.07
<0.07
NS
<0.07
1,2,4-Trichlorobenzene
NA
NA
NA
NA
NA
NA
NA
NA
NA
NA
NS
NA
Methylene Chloride
<2
<2
<2
<2
<2
<2
<2
<2
<2
<2
NS
<2
Chloroform
0.021
0.013
0.009
0.03
0.23
0.26
0.081
0.23
0.008
<0.005
NS
0.009
Carbon tetrachloride
0.021
<0.005
<0.005
<0.005
0.006
0.006
0.007
O.OD7
<0.005
<0.005
NS
<0.005
Tetrachloroelhene
280
24
8.4
25
800
710
1300
1100
14
20
NS
440
Trichloroethene
0.051
0.029
0.02
0.17
0.46
0.97
0.36
0.7
0.069
0.84
NS
3.5
1,1,1-Trichloroethane
0.034
<0.005
<0.005
<0.005
<0.005
<0.005
<0.005
<0.005
<0.005
<0.005
NS
<0.005
1,2-Dichloroethane
<0.01
<0.01
<0.01
<0.01
<0.01
0.056
<0.01
<0.01
<0.01
<0.01
NS
<0.01
c-1,2-Dichloroethene
0.02
0.031
0.018
0.35
0.18
1.5
0.058
0.8
0.05
4.1
NS
4.6
1,1-Dichloroelhene
2.7
<0.01
<0.01
<0.01
<0.01
I <0.01
I <0.01
1 0.02
0.022 1
<0.01 I
NS
<.01
Sum of Detected Compounds
282.85
24.07
8.45
25.57
800.89
1 712.81 1
1,300.51
1 1,101.87
14.26 1
25.06 1
0.00
t448.19
Notes: Concntrations are in ppm-v (parts per million by volume).
Baseline Soil vapor analysis performed by EPA Method TO3 for the Method 601 compound list.
Detected compounds shown in bold.
NS Denotes well not sampled.
NA: Denotes compound not analyzed for
Tables 8 & 9.xls Page 1 of 1 Revised: 11/2et01

TABLE 9
Summary of Historic Soil Vapor Monitoring Results
W.P. Ballard and Downgradient Properties
Greensboro, North Carolina
Location
SVMP-1
SVMP-2
SVMP-3
Dale Sampled
1/20/99
1/27/99
11/19/99
8/23101
1/20/99
1/27/99
11/19/99
8/23/01
1120/99
1/27/99
11/19/99
8/23101
Compound
ppm-v
ppm-v
ppm-v
ppm-v
ppm-v
PP m-v
PPm-v
PPm-v
PPm-v
PPm-v
PPm-v
PPm-v
Bromodichloromethane
<0.5
<250
<0.005
<0.005
<0.5
<250
<0.005
<0.005
<0.5
<250
<0.005
<0.005
Bromofonn
<0.5
<250
<0.005
<0.005
<0.5
<250
<0.005
<0.005
<0.5
<250
<0.005
<0.005
2-Chloroethylvinylether
<0.5
<250
NA
NA
<0.5
<250
NA
NA
<0.5
<250
NA
NA
Dibromochloromethane
<0.5
<250
<0.005
<0.005
<0.5
<250
<0.005
<0.005
<0.5
<250
0.005
<0.005
Dichlorodifluoromethane
<0.5
<250
<0.005
NA
<0.5
<250
<0.005
NA
<0.5
<250
<0.005
NA
Trichlorofluoromethane
<0.5
<250
0.006
<0.005
<0.5
<250
<0.005
<0.005
<0.5
<250
<0.005
<0.005
Vinyl Chloride
<0.5
<250
<3
<3
<0.5
<250
<3
<3
<0.5
<250
<3
<3
Chloromethane
<0.5
<250
<1
<1
<0.5
<250
1
<1
<0.5
<250
6.6
<1
Bromomethane
<0.5
<250
<1
NA
<0.5
<250
<1
NA
<0.5
<250
<1
NA
Chloroethane
<0.5
<250
<1
NA
<0.5
<250
<1
NA
<0.5
<250
<1
NA
1,1-Dichloroethane
<0.5
<250
<0.01
<0.001
<0.5
<250
<0.01
<0.001
<0.5
<250
<0.01
<0.01
t-1,2-Dichloroethene
<0.5
<250
<0.1
<0.01
<0.5
<250
0.2
<0.01
<0.5
<250
<0.1
<0.01
1,2-Dichloropropane
<0.5
<250
<0.01
<0.01
<0.5
<250
<0.01
<0.01
<0.5
<250
<0.01
<0.01
1,1,2-Trichloroethane
<0.5
<250
0.281
<.005
<0.5
<250
1.14
<.005
2.2
<250
3.064
<.005
1,2-Dibromoethane
<0.5
<260
NA
NA
<0.5
<250
NA
NA
<0.5
<250
NA
NA
Chlorobenzene
<0.5
<250
<0.07
<0.07
<0.5
<250
<0.07
<0.07
<0.5
<250
<0.07
<0.07
c-1,3-Dichloropropene
<0.5
<250
<0.01
<0.01
<0.5
<250
<0.01
<0.01
<0.5
<250
<0.01
<0.01
t-1,3-Dichloropropene
<0.5
<250
<0.01
<0.01
<0.5
<250
<0.01
<0.01
<0.5
<250
<0.01
<0.01
1,1,2,2-Tetrachloroethane
<0.5
<250
<0.005
<0.005
<0.5
<250
<0.005
<0.005
<0.5
<250
<0.005
<0.005
1,2-Dichlorobenzene
<0.5
<250
<0.07
<0.07
<0.5
<250
<0.07
<0.07
<0.5
<250
<0.07
<0.07
1,3-Dichlorobenzene
<0.5
<250
<0.07
<0.07
<0.5
<250
<0.07
<0.07
<0.5
<250
<0.07
<0.07
1,4-Dichlorobenzene
<0.5
<250
<0.07
<0.07
<0.5
<250
<0.07
<0.07
<0.5
<250
<0.07
<0.07
1,2,4-Trichlorobenzene
<0.5
<250
<0.2
NA
<0.5
<250
<0.2
NA
<0.5
<250
<0.2
NA
Methylene Chloride
<0.5
<250
<2
<2
<0.5
<250
<2
<2
<0.5
<250
<2
<2
Chloroform
<0.5
<250
0.141
0.021
<0.5
<250
0.291
0.013
1.9
<250
0.423
0.009
Carbon tetrachloride
<0.5
<250
0.034
0.021
<0.5
<250
0.04
<0.005
<0.5
<250
0.054
<0.005
Tetrachloroethene
5,300
8,600
1530.03
280
7,500
57,000
2180.56
24
8,300
13,000
2105.56
8.4
Trichloroethene
5.2
<250
0.954
0.051
7.8
<250
1.376
0.029
20
<250
3.218
0.02
1,1,1-Trichloroethane
<0.5
<250
0.005
0.034
<0.5
<250
0.006
<0.005
<0.5
<250
0.011
<0.005
1,2-Dichloroethane
<0.5
<250
<0.01
<0.01
<0.5
<250
-<0.01
<0.01
<0.5
<250
<0.01
<0.01
c-1,2-Dichloroethene
<0.5
<250
<0.1
0.02
1.7
<250
<0.1
0.031
4.1
<250
1.4
0.018
1,1-Dichloroethene
<0.5
<250
<0.01
2.7
<0.5
<250
<0.01
<0.01
1
<250
<0.01
<0.01
Sum of Detected EPA 601
Compounds
5,305.20
8.600.00
1.531.45
282.85
7,509.50
57,000.00
2,184.61
24.07
8,329.20
13,000.00
2,120.34
8.45
Baseline Total VOC
Concentration"
6,952.60
282.85
32 254.75
24.07
10 664.60
8.45
-1. I uu io 1 u0%u
Notes: Soil vapor analysis performed by EPA Method TO3 for the Method 601 compound list. "
Detected compounds shown in bold.
"The Baseline Total VOC Concentration is the average of the two modified total VOC concentrallons
NS Denotes well not sampled.
NA: Denotes compound not analyzed for
ppm-v Denotes parts per million by volume.
Page 1 of 4

TABLE 9
Summary of Historic Soil Vapor Monitoring Results
W.P. Ballard and Downgradient Properties
r,roanchnrn Nnrfh Cnrnnnn
Location
SVMP-4
SVMP-5
SVMP-6
Date
1120/99
1/27/99
11/19/99
8/23101
1/20/99
2/2/99
11/19/99
8/23/01
1120/99
1/27/99
11/19/99
8123/01
Compound
ppm-v
ppm-v
ppm-v
ppm-v
ppm-v
ppm-v
ppm-v
ppm-v
ppm-v
ppm-v
ppm-v PP
PPm-v
Bromodichloromethane
<0.5
<250
<0.005
<0.005
<0.5
<250
0.008
<0.005
<0.5
<250
<0.005
<0.005
Bromoform
<0.5
<250
<0.005
<0.005
<0.5
<250
<0.005
<0.005
<0.5
<250
<0.005
<0.005
2-Chloroethylvinylether
<0.5
<250
NA
NA
<0.5
<250
NA
NA
<0.5
<250
NA
NA
Dibromochloromethane
<0.5
<250
<0.005
<0.005
<0.5
<250
<0.005
<0.005
<0.5
<250
<0.005
<0.005
Dichlorodifluoromethane
<0.5
<250
<0.005
NA
<0.5
<250
<0.005
NA
<0.5
<250
<0.005
NA
Trichiorofluoromethane
<0.5
<250
<0.005
<0.005
<0.5
<250
<0.005
<0.005
<0.5
<250
<0.005
<0.005
Vinyl Chloride
<0.5
<250
<3
<3
<0.5
<250
<3
<3
<0.5
<250
<3
<3
Chloromethane
<0.5
<250
7.3
<1
<0.5
<250
7.1
<1
<0.5
<250
<1
- <1
Bromomethane
<0.5
<250
<1
NA
<0.5
<250
<1
NA
<0.5
<250
<1
NA
Chloroethane
<0.5
<250
<1
NA
<0.5
<250
<1
NA
<0.5
<250
<1
NA
1,1-Dichloroelhane
<0.5
<250
0.08
0.021
<0.5
<250
<0.01
<0.001
<0.5
<250
<0.01
<0.001
t-1,2-Dichloroethene
<0.5
<250
0.1
<0.01
<0.5
<250
0.1
0.016
<0.5
<250
0.2
<0.01
1,2-Dichloropropane
<0.5
<250
<0.01
<0.01
<0.5
<250
<0.01
<0.01
<0.5
<250
<0.01
<0.01
1,1,2-Trichloroethane
<0.5
<250
0.765
<.005
3.2
<250
3.687
<.005
<0.5
<260
1.545
<.005
1,2-Dibromoethane
<0.5
<250
NA
NA
<0.5
<250
NA
NA
<0.5
<250
NA
NA
Chlorobenzene
<0.5
<250
<0.07
<0.07
<0.5
<250
<0.07
<0.07
<0.5
<250
<0.07
<0.07
0-1,3-Dichloropropene
<0.5
<250
<0.01
<0.01
<0.5
<250
<0.01
<0.01
<0.5
<250
<0.01
0.013
t-1,3-Dichloropropene
<0.5
<250
<0.01
<0.01
<0.5
<250
<0.01
<0.01
<0.5
<250
<0.01
<0.01
1,1,2,2-Tetrachloroethane
<0.5
<250
<0.005
<0.005
<0.5
<250
<0.005
<0.005
<0.5
<250
<0.005
<0.005
1,2-Dichlorobenzene
<0.5
<250
<0.07
<0.07
<0.5
<250
<0.07
<0.07
<0.5
<250
<0.07
<0.07
1,3-Dichlorobenzene
<0.5
<250
<0.07
<0.07
<0.5
<250
<0.07
<0.07
<0.5
<250
<0.07
<0.07
1,4-Dichlorobenzene
<0.5
<250
<0.07
<0.07
<0.5
<250
<0.07
<0.07
<0.5
<250
<0.07
<0.07
1,2,4-Trichlorobenzene
<0.5
<250
<0.2
NA
<0.5
<250
<0.2
NA
<0.5
<250
<0.2
NA
Methylene Chloride
<0.5
<250
<2
<2
<0.5
<250
<2
<2
<0.5
<250
<2
<2
Chloroform
<0.5
<250
0.194
0.03
2.9
<250
0.635
0.23
2.1
<250
0.455
0.26
Carbon tetrachloride
<0.5
<250
0.017
<0.005
<0.5
<250
0.06
0.006
0.5
<250
0.084
0.006
Tetrachloroethene
5,900
6,500
805.59
25
8,600
48,000
2,890.87
800
8,700.00
17,000
2,791.58
710
Trichloroelhene
24
<250
3.123
0.17
23
<250
3.534
0.46
22
<250
3.29
0.97
1,1,1-Trichloroethane
<0.5
<250
<0.005
<0.005
<0.5
<250
0.017
<0.005
<0.5
<250
0.012
<0.005
1,2-Dichloroethene
1.5
<250
0.92
<0.01
<0.5
<250
0.26
<0.01
<0.5
<250
0.05
0.056
c-1,2-Dichloroethene
6.6
<250
1.6
0.35
6.6
<250
1.9
0.18
4.8
<250
1.4
1.5
1,1-Dichloroethene
0. 1
<250
0.05
<0.01
1.5 1
<250
0.08
<0.01
1.6 1
<260 1
<0.01
<0.01
Sum of Detected EPA 601
Compounds
5,931.68
6,500.00
819.74
25.57
8.636.20 1
48,000.00 1
2,908.25
800.89
8,731.00 1
17.000.00 1
2,798.62
712.81
Baseline Total VOC
Concentration"
6 215.84
25.57
28 318.10
800.89
12 865.50
712.81
uvo "Ful anmrwo pcuvuncv uy crn mcuwu i va Mw um NICIlIVU vV l GVrrlpuVnu OSr.
Detected compounds shown in bold.
The Baseline Total VOC Concentration Is the average of the two modified total VOC concentrations
detected during the Initial baseline sampling events.
NS Denotes well not sampled.
NA: Denotes compound not analyzed for
ppm-v Denotes parts per million by volume.
Page 2 of 4

-- ` -- j---J --'
TABLE 9
Summary of Historic Soil Vapor Monitoring Results
W.P. Ballard and Downgradient Properties
Greensboro, North Carolina
Location
SVMP-7
SVMP-8
SVMP-9
Date
1/20/99
1/27/99
11/19/99
8/23/01
1/20199
1/27/99
11/19/99
8/23/01
1/20/99
1/27/99
11/19/99
8/23/01
Compound
ppm-v
ppm-v
ppm-v
ppm-v
ppm-v
PP m-v
PPm-v
PPm-v
PPm-v
PPm-v
PPm-v
PPm-v
Bromodichloromethane
<0.5
<250
<0.005
<0.005
<0.5
<250
<0.005
<0.005
<0.5
<250
<0.005
<0.005
Bromoform
<0.5
<250
<0.005
<0.005
<0.5
<250
<0.005
<0.005
<0.5
<250
<0.005
<0.005
2-Chloroethylvinylether
<0.5
<250
NA
NA
<0.5
<250
NA
NA
<0.5
<250
NA
NA
Dibromochloromethane
<0.5
<250
<0.005
<0.005
<0.5
<250
<0.005
<0.005
<0.5
<250
<0.005
<0.005
Dichlorodi0uoromethane
<0.5
<250
<0.005
NA
<0.5
<250
<0.005
NA
<0.5
<250
<0.005
NA
Trichlorofluoromethane
<0.5
<250
<0.005
<0.005
<0.5
<250
<0.005
<0.005
<0.5
<250
<0.005
<0.005
Vinyl Chloride
<0.5
<250
<3
<3
<0.5
<250
<3
<3
<0.5
<250
<3
<3
Chloromethane
<0.5
<250
<1
<1
<0.5
<250
1.1
<1
<0.5
<250
1.2
<1
Bromomethane
<0.5
<250
<1
NA
<0.5
<250
<1
NA
<0.5
<250
<1
NA
Chloroethane
<0.5
<250
<1
NA
<0.5
<250
<1
NA
<0.5
<250
<1
NA
1,1-Dichloroethane
<0.5
<250
0.01
<0.001
<0.5
<250
0.14
0.077
<0.5
<250
0.04
0.083
t-1,2-Dichloroethene
<0.5
<250
0.4
<0.01
<0.5
<250
0.4
0.034
<0.5
<250
0.1
0.03
1,2-Dichloropropane
<0.5
<250
<0.01
<0.01
<0.5
<250
<0.01
<0.01
<0.5
<250
<0.01
<0.01
1,1,2-Trichloroethane
2
<250
2.766
<.005
<0.5
<250
1.369
<.005
<0.5
<250
0.123
<.005
1,2-Dibromoethane
<0.5
<250
NA
NA
<0.5
<250
NA
NA
<0.5
<250
NA
NA
Chlorobenzene
<0.5
<250
<0.07
<0.07
<0.5
<250
<0.07
<0.07
<0.5
<250
0.2
<0.07
c-1,3-Dichloropropene
<0.5
<250
<0.01
<0.01
<0.5
<250
<0.01
<0.01
<0.5
<250
<0.01
<0.01
t-1,3-Dichloropropene
<0.5
<250
<0.01
<0.01
<0.5
<250
<0.01
<0.01
<0.5
<250
<0.01
<0.01
1,1,2,2-Tetrachloroethane
<0.5
<250
<0.005
<0.005
<0.5
<250
<0.005
<0.005
<0.5
<250
<0.005
<0.005
1.2-Dichlorobenzene
<0.5
<250
<0.07
<0.07
<0.5
<250
<0.07
<0.07
<0.5
<250
<0.07
<0.07
1,3-Dichlorobenzene
<0.5
<250
<0.07
<0.07
<0.5
<250
<0.07
<0.07
<0.5
<250
<0.07
<0.07
1,4-Dichlorobenzene
<0.5
<250
<0.07
<0.07
<0.5
<250
<0.07
<0.07
<0.5
<250
<0.07
<0.07
1,2,4-Trichlorobenzene
<0.5
<250
<0.2
NA
<0.5
<250
<0.2
NA
<0.1
<250
<0.2
NA
Methylene Chloride
<0.5
<250
<2
<2
<0,5
<250
<2
<2
<0.5
<250
<2
<2
Chloroform
3
<250
0.546
0.081
<0.5
<250
0.182
0.23
<0.5
<250
0.183
0.008
Carbon tetrachloride
0.77
<250
0.141
0.007
<0.5
<250
0.048
0.007
<0.5
<250
0.005
<0.005
Tetrachloroethene
12,000
35,000
3782.39
1300
6,600
5,600
1956.24
1100
6,400
5,500
819.35
14
Trichloroethene
37
<250
7.338
0.36
2
<250
1.663
0.7
61
<250
12.14
0.069
1,1,1-Trichloroethane
<0.5
<250
0.066
<0.005
<0.5
<250
0.023
<0.005
<0.5
<250
<0.005
<0.005
1,2-Dichloroethane
<0.5
<250
<0.01
<0.01
<0.5
<250
0.11
<0.01
1.2
<250
0.69
<0.01
0-1,2-Dichloroethene
14
<250
3.6
0.058
0.65
<250
1.3
0.8
100
<250
24.1
0.05
1,1-Dichloroethene
2.2
<250
0.25
<0.01
<0.5
<250
0.25
0.02
<0.5
<250
0.9
0.022
Sum of Detected EPA 601
Compounds
12.058.97
35,000.00
3,797.51
1,300.51
6.603.05
.9,600.00
1,962.83
1,101.87
6,562.20
5,500.00
859.03
14.26
Baseline Total VOC Concentr
23 529.49
1,300.51
6,101.53
1,101.87
6 031.10
14.26
nu�w. odsdnnd uun vdpur dndryws penurrneu ny Cr-H meuluu I Ud ror me memo0 Qu7 compound llsr.
Detected compounds shown In bold.
"The Baseline Total VOC Concentration is the average of the two modified total VOC concentrations
detected during the initial baseline sampling events.
NS Denotes well not sampled.
NA: Denotes compound not analyzed for
ppm-v Denotes parts per million by volume.
Page 3 of 4

TABLE 9
Summary of Historic Soil Vapor Monitoring Results
W.P. Ballard and Downgradient Properties
r..o-t,- N-4h
Location
SVMP-10
SVMP-11
SVMP-12
Date
1/20/99
1127/99
11/19/99
8/23/01
1/20/99
1/27199
11/19/99
8/23/O1
1120199
1/27/99
11119/99
11/2-1/01
Compound
ppm-v
ppm-v
ppm-v
ppm-v
ppm-v
ppm-v
ppm-v
ppm-v
ppm-v
ppm-v
PP m v
ppm-v
Bromodichloromethane
<0.5 _
<250
<0.005
<0.005
<0.5
<250
<0.005
NS
<0.5
<250
<0.005
<0.005
Bromofonn
<0.5 '
<250
<0.005
<0.005
<0.5
<250
<0.005
NS
<0.5
<250
<0.005
<0.005
2-Chloroethylvinylether
<0.5
<250
NA
NA
<0.5
<250
NA
NS
<0.5
<250
NA
NA
Dibromochloromethane
<0.5
<250
<0.005
<0.005
<0.5
<250
<0.005
NS
<0.5
<250
<0.005
<0.005
Dichlorodifluoromethane
<0.5
<250
<0.005
NA
<0.5
<250
<0.005
NS
<0.5
<250
<0.005
NA
Trichlorofluoromethane
<0.5
<250
<0.005
<0.005
<0.5
<250
<0.005
NS
<0.5
<250
<0.005
<0.005
Vinyl Chloride
<0.5
<250
<3
<3
<0.5
<250
<3
NS
<0.5
<250
<3
<3
Chloromethane
<0.5
<250
<1
<1
<0.5
<250
<1
NS
<0.5
<250
<1
<1
Bromomethane
<0.5
<250
<1
NA
<0.5
<250
<1
NS
<0.5
<250
<t
NA
Chloroethane
<0.5
<250
<1
NA
<0.5
<250
<1
NS
<0.5
<250
<1
NA
1,1-Dichloroethane
<0.5
<250
0.05
0.074
<0.5
<250
0.06
NS
<0.5
<250
0.01
<0.001
t-1,2-Dichloroethene
<0.5
<250
5.7
0.041
<0.5
<250
2
NS
<0.5
<250
0.9
0.086
1,2-Dichloropropane
<0.5
<250
<0.01
<0.01
<0.5
<250
<0.01
NS
<0.5
<250
<0.01
<0.01
1,1,2-Trichloroethane
<0.5
<250
1.71
<,005
1.5
<250
8.363
NS
4
<250
6.074
<,005
1,2-Dibromoethane
<0.5
<250
NA
NA
<0.5
<250
NA
NS
<0.5
<250
NA
NA
Chlorobenzene
<0.5
<250
0.28
<0.07
<0.5
<250
<0.07
NS
<0.5
<250
<0.07
<0.07
0-1,3-Dichloropropene
<0.5
<250
<0.01
<0.01
<0.5
<250
<0.01
NS
<0.5
<250
<0.01
<0.01
t-1,3-Dichloropropene
<0.5
<250
<0.01
<0.01
<0.5
<250
<0.01
NS
<0.5
<250
<0.01
<0.01
1,1,2,2-Tetrachloroethene
<0.5
<250
<0.005
<0.005
<0.5
<250
<0.005
NS
<0.5
<250
<0.005
<0.005
1,2-Dichlorobenzene
<0.5
<250
<0.07
<0.07
<0.5
<250
<0.07
NS
<0.5
<250
<0.07
<0.07
1,3-Dichlorobenzene
<0.5
<250
<0.07
<0.07
<0.5
<250
<0.07
NS
<0.5
<250
<0.07
<0.07
1,4-Dichlorobenzene
<0.5
<250
<0.07
<0.07
<0.5
<250
<0.07
NS
<0.5
<250
<0.07
<0.07
1,2,4-Trichlorobenzene
<0.5
<250
<0.2
NA
<0.5
<250
<0.2
NS
<0.5
<250
<0.2
NA
Methylene Chloride
<0.5
<250
<2
<2
<0.5
<250
<2
NS
<0.5
<250
<2
<2
Chloroform
<0.5
<250
0.159
<0.005
<0.5
<250
0.128
NS
1.5
<250
0.32
0.009
Carbon tetrachloride
<0.5
<250
0.015
<0.005
1.1
<250
0.284
NS
1.3
<250
0.33
<0.005
Tetrachloroethene
5,900
11,000
783.44
20
11,000
55,000
4040.74
NS
12,000
43,000
3371.61
440
Trichloroethene
200
<250
22.69
0.84
120
<250
14.47
NS
80
<250
9.569
3.5
1. 1. 1 -Trichloroethane
<0.5
<250
<0.005
<0.005
2.6
<250
0.684
NS
1.1
<250
0.326
<0.005
1,2-Dichloroethane
<0.5
<250
0.17
<0.01
<0.5
<250
0.12
NS
<0.5
<250
<0.01
<0.01
c-1,2-Dichloroethene
620
<250
213.3
4.1
300
<250
57.96
NS
130
<250
27.09
4.6
1,1-Dichloroethene
<0.5
<250
3.86
<0.01
<0.5
<250
1.59
NS
6.7
<250
1.17
<.01
bum of ee e
Compounds
6,720.00
11,000.00
1,031.27
25.06
11.425.20
55,000.00
4,126.40
NS
43,000.00
3,417.40
Baseline Total VOC Concentr
8 860.00
25.06
33 212.60
NS
+12,223.60
27 611.80
7448.19
448.19
pores: oasenne aon vapor anatysis perrormea oy tt-A mernoa i ua ror the memos tint compound test.
Detected compounds shown in bold.
The Baseline Total VOC Concentration /s the average of the two modified total VOC concentrations
detected during the initial baseline sampling events.
NS Denotes well not sampled.
NA: Denotes compound not analyzed for
ppm-v Denotes parts per million by volume.
Page 4 of 4

TABLE 10
Phase I Full -Scale Application - Injection Data Summary
In Situ Chemical Oxidation Using Sodim Permanganate
W. P. Ballard and Downgradient Properties
Greensboro, North Carolina
IT Corporation Project #107636
Injection
Date
Injection Point
ID
Maximum
Attainable Depth
Feet
Volume of 5%
Injected
Gallons
Comments
O6/18/01
IP-34
48
278
Backflow during injection at 30 ft
O6/19/01
IP-46
48
245
O6/20/01
IP-44
54
315
06/20/01
IP-36
50
280
06/21/01
IP-49
42
245
Backflow during 35-40 ft injection
06/21/01
IP-47
45
245
06/21/01
IP-50
40
175
Backflow during 30-35 ft injection
06/21/01
IP-45
48
210
Backflow at MW-8
O6/22/01
IP-51
"43
245
06/22/01
IP-58
37
205
Backflow at MW-17
O6/25/01
IP-54
32
120
Backflow at 20-30 ft intervals
06/25/01
IP-61
40
270
O6/25/01
IP-56
40
250
-
06/25/01
IP-60
34
190
06/26/01
IP-62
32
175
O6/26/01
IP-65
31
175
O6/26/01
IP-72
40
205
06/26/01
IP-63
35
175
O6/26/01
IP-67
30
140
Skipped 20ft interval due to backflow
06/26/01
IP-78
34
130
Skipped 15ft interval
06/27/01
IP-81
50
245
O6/27/01
IP-86
50
280
06/27/01
IP-73
34
175
Backflow during injection at 20ft interval
06/27/01
IP-88
46
240
06/28/01
IP-77
45
210
06/28/01
IP-70
45
210
Backflow during 40ft interval
06/28/01
IP-101
55
275
Backflow during 40-45 ft intervals
06/28/01
IP-104
62
350
06/29/01
IP-102
55
280
06/29/01
IP-96
62
350
07/02/01
IP-94
65
385
07/02/01
IP-105
58
315
07/02/01
IP-92
64
385
07/02/01
IP-98
64
350
07/02/01
LMP-1 W
54
200
07/02/01
LMP-2N
64
240
07/02/01
DW-8S
40
200
07/02/01
DW-8N
32
200
07/03/01
IP-64
32
175
07/03/01
IP-57
43
245
07/03/01
IP-55
37
210
07/03/01
IP-100
73
420
Backflow during 15ft interval
07/04/01
IP-97
57
315
07/04/01
IP-103
64
350
Backflow during 60ft interval
07/04/01
IP-85
40
245
07/04/01
IP-82
50
280
07/04/01
IP-69
35
210
07/05/01
IP-89
37
210
Backflow during 35ft interval
07/05/01
DW-13E
50
200
07/05/01
DW-13W
41
100
Backflow in asphalt cracks
Tables 10 & 11.xis Page 1 of 2 Revised: 11/28/01

TABLE 10
Phase I Full -Scale Application - Injection Data Summary
In Situ Chemical Oxidation Using Sodim Permanganate
W. P. Ballard and Downgradient Properties
Greensboro, North Carolina
IT Corporation Project #107535
Injection
Injection Point
Maximum
Volume of 5%
Date
ID
Attainable Depth
Injected
Comments
Feet
Gallons
07/05/01
DMP-4E
44
100
Backflow in DMP-4
07/05/01
DMP-4W
49
100
07/05/01
MW-17S
50
100
07/05/01
MW-17N
42
100
07/09/01
DMP-4S
48
100
Backflow thru cracks in asphalt
07/09/01
DMP-4N
44
100
Slight backflow in DMP-4
07/09/01
IP-74
40
210
07/09/01
MW-22N
41
100
07/09/01
MW-22S
47
100
07/09/01
DMP-1W
59
240
Backflow at DMP-1
07/09/01
IP-59
43
245
07/10/01
IP-58.5
38
200
07/10/01
IP-62.5
38
200
Backflow atIP-63
07/10/01
IP-68
33
200
07/11/01
IP-53
35
200
07/11/01
IP-60.5NW
32
200
07/11/01
IP-68E
37
240
Totals
14,858
Notes: Actual Volume of 5% NaMnO4 Injected During the Phase I Application is 15,600 Gallons.
The observed variation between the actual and measured volumes was due to the method of
measurement used, which relied on using the markings on the solution tank to approximate
the volume injected at each point.
Tables 10 & 11.xis Page 2 of 2 Revised: 11/28/01

TABLE 11
Phase i In Situ Chemical Oxidation Using Sodium Permanganate
Field Monitoring Data Summary
W. P. Ballard and Downgradient Properties
Greensboro, North Carolina
IT Corporation Project # 107535
Well
Date
Top of Casinng
Depth to Water
Groundwater
pH
Specific
Dissolved
Temperature
Oxidation/Reduction
Identification
Elevation
Elevation
Conductance
Oxygen
Potential (ORP)
Color
Feet
Feet
Feet
S.U.
ms/cm
mg/l.
°C
mV
BMW-3
- -- - . _... -_._
06/18/01
-._..__-_._....._
862.12
...---.._....
13.32 _..........._.._....._50.47-
848.80
-- .
10.84
_..._.._._...
0.824
1.69
18.97
-626
Clear
O6/20/01
11.65
850.47
- - -
10.90
._._._._.._.__._.... ....
0.824
0.81
---.
18.92
__............ --- .._.._
�63
Clear
06/20/01
9.33
852.79
10.85
0.818
2.47
18.83
-636
Clear
_........ -._...._....._..._.._.__._....._..._....
06/21/Ot
_._......._.....__.._.__..._.-.....
8.76
-.--- .._._. ._......-..._..._.....------..
853.36
10.98
-0.810
1.57
18.84
-634
Clear
-- - ...........
0621/01
-............_..._..------..._..._........_.__..._..--
8.69
_....-...
853.43
--................._._..---._....._........._----_....__
.-- ._...-...-.._.._...-_._..._
10.75
---._.._........_....._..-
0.814
---.-..
2.24
18.69
-573 -
Clear
06/22/01
9.42
852.70
10.91
...__......_..._........_..._...._.__._._
0.810
_.............----.._..._.._....._.._._._..---.......----...._......__._.....----..
0.75
19.02
-633
Clear
06/22/01
9.81
852.31
- 10.81 --
_
0.815
1.49
19.19
-720 -�
Clear
_....._....._.._..._......__
06/25/01
..............._..............
............ -....... _._..............._....._..._.._..................9.._..............................-
9.20
852.92
- -------
10.71
0.805
1.20
19.49
-791
Clear
-.._......_.._.__..................
- 06/25/01
-- ._......._...._...-
9.39
---.._._......._........... .._...._
.... _................_.._
852.73
....__..._........_...- ---..........
........... _........_.__._....__...._.....__...._.._..__._._..._.....__..._._
10.47
0.806
...... _.........
0.78
........... _..._._.....
20.22
--
-806
Clear
O6/26/01 -
8.62
853.50
--- --............_...._.__....._..__............
10.27
-
0.807
--...._.. --
0.99
- ......__..__.... -
21.07
-......._..-----........ ---
-814
Clear
06/27/01
8.79
853.33
10.27
0.807
0.81
20.43
-817
Clear
- -
06/28/01
---..-_.___
...._.. -
8,71
_... _............
853.41 -- -
10.55
0.822
0.55
18.94
-765
Clear
__.
...................._...._......_..............._.........__.._...
............10.31
0.829
-.........._......._.
3.42
- -... -......__.-.._.._._................_-._..._.._...._._...
19.02
-813
Clear, Slightly fizzy
8.38
�9.31
853.74
10.66
0.890
1.23
18.83
--._._....__.._......_._..
806
Clear, Slightly fizzy
07/02/01
07/02/01
852.81
_
�10.33
V 0.890
-- -
0.12
-
20.09
--
-837 -
Clear
..._07/03/01_.__...-.---
._... _....._
.................._9!)0__...................._....._........_853:12__..__._._............._1.
................._._._.__.76
U.896..............._....................:2....._.__.........-_....18.92
Clear, Slightly fizzy
...... - -------- -----...._..
07/04/01
-- ..__._......._..
- -- -----------
8.66
853.46
11.06
0.905
1.27
......_.._...-
19.00
--�07._.... ---
762
Clear
07/05/01
- ...._.__.
8.52
._-. ------..-..._...----.._..._.._............
853.60
------._........._....-
0.912
------7......... -
1.33
-------
19.18
- ---...._..-
-760
Clear, Slightly fizzy
07/09/01
8.B4
853.28
_10.82
11.13
0.914
0.32
18.97
-711
Clear, Slightly fizzy
__...._-.-._.........-_._.._..
07/13/01
.._.._..
_._... _ _..
8.29
__.....---.._-..
_..... _853.83
NG
NG
NG
NG
NG
Clear
_.__.___..._........_08103/01
.,.-
_._........_. _. _. _.........
............_.._......__......__.......-...._..__.._.._.._
10.35 ..................................._....._.........._....---....__._....._...................._..-----
_.__...._._..._.--.-__.............__...
851.77
11.41
- -- ------
0.762
.._..._...... -
-------
-1.07
- -
19.06
- - 855-- --
Clear, Slightly fizzy
08/20/01
10.92 _
851.20
NG
NG
......._...._.._..._...__...._.._......--
NG
NG
---.._.....-85-._..__........_..
NG
Clear
-
BMW-4
O6/18/Ot
.....860:08- ----
--..._.......?..:90.................._......__._._838.18
17.88._..._..
Clear
.._.......-._.._.-__....__..
07/13/01
__.........I._.- ..............
_.__.............-------........_..-_.........._..._..__._..........
22.59
_..._.__.........._.._10.13
837.49
_ ...- ...------_............
...-...............__0.3511......._..__...--
NG
NG
-�,58...._.-._..
NG
NG
_._--.._...'118 ..._._.._
NG'
Clear
08/03/01
_
22.76
837.32
-----_...._.._............._..__...-----_.......
9.70
0.256
--..__.-..---
0.44
---...._.... ----
17.62
--. .....
338
Clear
08/20/01
23.47
836.61
NG
NG
NG
NG
NG i
Clear
J
D. ...... .............
--....._..._..__......_.._..........__.._._........................_...
-----.._.-...._.....__....__....._................._..._._......._._....._..---......................._....---._..............._............_..__..__..............._......._......_..................................._........_......_........._...
06/28/01
13.98
856.85---
5.71
0.458
0.98
20.47
-._...__............._.._.._.
392
Clear
-
06/29/01
_
14.82
856.01
- _
5.75
-
0.490
1.20
20.57
411
Clear
........... _..-_..-_.._....
07/02/01
..... _...............----..........
_..-.......-- --- --
14.67
..._._....._.....__.._................_...._..---.........._......_........._._...----................._........_.........__..................._---._...._._.............._..
856.16
___-
5.90
-
0.488
- 0.11 -
_
20.81 -
- 303 -
Clear
07/03/01
._._._......04/0- ..._.._...-
._.._... --
14.92
--....__...........- - -
855.91
-. ---
5.68
0.492
...... __.._..._........_.....
1.41
..... ........ _.._._..._.__.
20.49
.......... __ -...._.._.._._..._.._._.._.
342
Clear
_
07/04/Ot
7.58
863.25
--.�_._._............__..._-...._..._....
6.20
0.501
_..------------_........
1.39
20.60
335
Clear
_
07/05/01
14.51
856.32
i5.44
-0.514
1.50
20.53
362
Clear
07/09/01
15.40
855.43
5.77-
0.532
1.45
20.60
357
Clear
/1/01
..... 3................._
.-_......._.._......---...-..._..__._...._....................._......_......_.
13.12
857.71
._.__._.._......._.._._.-............._....-..._
NG
N-..._.._...
Pink_........_..
08/03/01
15.78
855.05
10.47
..............._......._..._......._.........._
1.003
0.89
.-
20.58
-_._........._._G._.....
_.._......._............
Purple
0820/01
17.54
853.29
�NG
NG-�
_
NG
_
NG
_445
NG
Purpla
Tables 10 811.x1s Page 1 of 7 Revised: 1128101

TABLE 11
Phase I In Situ Chemical Oxidation Using Sodium Permanganate
Field Monitoring Data Summary
W. P. Ballard and Downgradient Properties
Greensboro, North Carolina
IT Corporation Project # 107535
Well
Date
Top of Casinng
Depth to Water
Groundwater
pH
Specific
Dissolved
Temperature
Oxidation/Reduction
Identification
Elevation
Elevation
Conductance
Oxygen
Potential (ORP)
Color
Feet
Feet
Feet
S.U.
mS/Cm
mg/L
°C
my
DMP-2
...._. .......
_-06/18101
..
_ 872.13 _
14.21
.................__........_........._......._......
857.92
_............_..._._......._.._........._............_....................._....
6.08
0.145
5.57
19.80
300
Clear
06/29/01
14.20
857.93
6.05
_........._................................_._..._..........................._...._......................__......._._...._..................__...._....._.-...................._.-..
0.170
4.76
19.86
385
Clear
07/03/01
14.82
857.31
5.74
0.167
3.33
19.73
373
Clear
07/04/01
14.79
857.34
6.41
_07/05/01. ..........................__.............................
14.79........................................_857.34..................................`:78................................_0;553..............................5.05
... ......._...---..........__......._.__.-_.
.
19.97
_.
355
Clear
07/09/01
15.55 _ ✓
856.58
5.80
0.190
3.34..........................19.67..........................................379............................
Clear
07/13/01
15.50
-
- 856.63
-- NG --
__-NG V4WV
NG
NG
W- NG `
Clear
08/03/01
..
_
84.51
--
7.09
-
-
--__�
_, _
295
Clear
08/20101
31.84840. ..
...
..._..........-........._._._....-
-
6.40..........................__--................._...__...._1
........
52..._.-
-.._..25.1.� -
_ _
.-_........ . 101 ...__._..... -Clear
DMP-3
06/18/01
862.18
10.16
852.02
6.32
0.111
6.87
17.63
350
Clear
06/22/Ot
_._..._....._.__-._..._..........__........._._._._.__..__....._-......._..-...---._...
8.60
---._...._..._.._-._.-._.._-.._.-_._...
853.58
6-I.
0.108
7.10
17.68
550
Clear
O6/22/Ot
_..........................._.........._....._....................._...__....__.._...._...._.........._......._......................._.._.._............._..._._.._._._............._.......8.._.......--
8.80
853.38
__.....__...-.._....__..._...._...._._..
6.32
0.110
-.....- -
8.00
._.._..........7.._ --
17.74
- -----........-- -
571
Clear.
06/25/01
7.22
854.96
........_............._09
8.62
--..............._._..--
0.098
.....-....-....._........._._........_..._.........._....--------
8.26
18.12
..._.._.__._._._..
387
Clear
06/25/01
8.28
853.90
8.57 -
_ _
0.100
_
- 8.39
_
-18.33
_
377
Clear
_........_....__.._._......
66/26/01
- - - -- ..............._..-
-- --._................._.......__..._....__._.._..__......._._.._.
8.72
853.46
_.._._........._....................._.........._..._..._..-....-............_................................-..-_.
8.22
_
0.104
8.48
- 18.43
399
Clear
06127/Ot..........
......... ...............811.................... ........................
853.47...... ...........
-..._................................
9.03
_.............._........-...--...._....._......_....._...................._.._._.........
17.96
375
Clear
06/28/01
8.47 _
................e:86................................_0:091............
853.71
7.31
0.106
6.16
17.56
452
Clear
06/28/01
8.54
853.64
6.50 -
_ 0.107 -
-6.63
- 17.61 -
- 434 -
Clear
06/29/01
8.57 ........
--853.61
6.41
17.49
444
Clear
......--...._...._..-....._....._.-.._.._.__..-
07/02/01
................_
.............._..---- -.
8.84 _ ..................................._....__..__._._........................_........_.._.
-
853.34
..T_6_27_...._
6.40
---0.110_......___
0.118
1.64
17.82
373
Clear
07/03/01 -
8.68
853.50
6.10
. ..............................
0.120
._....._..._...__._........_._
5.56
......................- --
17.84
......_...............__....__..._.._..._...._...
417
Clear
07/04/01
8.96
853.22
_
6.15
_
0.118 -
_
6.25
17.65
477 _
Clear
_...._....-.._........
..---07/05/01..........
_................._...................._.........8..........................................._.
8.71
......853.47
0;049.
17.64
2t33_
Clear
07/09/Ot
9.59........------852.59....._...._.._..
.................................7:5?..-.
........
_...._. 7_B5
..... ...................... _...
...... _....._8:42.... .... .... ....
........ ...... -.....---
_
320
Clear
07/13/01
8.95
853.23
-....__
NG
............_..._0:071.............-
NG
.._...__6:91..._..._..
-.._._._17.81 -.._
NG
...._...__......._... __.
NG
Clear
08/03/01
12.96
849.22
10.22
0.173
_NG
5.52
18.73
88
Clear
01/08/00
11.98
-..
_........-850.20..
-..._......._........41
.6 .
.._...-......_...-_.....
_0.071 ..... .....---
--------- 3.94..._._.....
- 27.47-
....-......--..__...41.6__... -Silty
DMP 4
06/18/01
862.25
9.68
852.57 _
6.02
0.080
7.00
15.80
361
7.51
854.74
-- 6.37
- 0.084
- 8.25
y 16.10
_Clear
380
Clear
_.__._....-----......_.__..._.....-._....._...---._.._.....
06/27/01
-
7.82
------..........._.................
854.43
I..._..._.__........._---
6.22
0.084
7.57
16.63
511
Clear
---._.._.._._..........-._._
O6/28/01
6.21
-- ._..._.......-
-
856.04
._.....__...._--..__.........._.........._-..._....._.._........._....._..0.._
---- - -
6.12
-................__..-_.._..._._.
0.086
_.__....._...._..- --
6.00
._..... -- ....._......_....
15.31
- ----- ... -
411
Clear
81---..._..._...._.._..
06/28/01
7.70
_ 854.55
6.18
................_._.__.........._...-
0.086
-.-.............
7.04
-- --._................._....----......_..._.__...__.
15.56
384
Clear
06/29/01
8.23
854.02
5.94
0.090'
_
8.06
15.22
429
Clear
07/02/.. ..................
--..__.....----... ..............
......__._....-- ._......_..__...._
._.... _..-............._.........._.__.......__...-
07/03/01
0.10
854.15
6.68
---.._...
6.68
- .._._ .
- -- .._._..._ .....
-- _.._.... ._.-._.._.
07/04101
8.00
854.25
6.06
. .._.....
0.103
_.._._........---- --
6.00
----....__.._..
15.68
_. . - ..
432
Clear
07/05/01
8.04
854.21
- 5.56
0.097
_
5.51
15.86
_
- 435
Clear
.......... -._.............._._.............
07/13/01
.... _._..._.._.. _. __....
6.91 ......_..._.._...
855.34
...................... _......................_............................_.._....
NG
_
NG
... ......_........... _........_.... .........-.
NG W
............ ....._._..._.......
NG
NG
Purple
08/03/01
................... .
.....................13:06........................................_849.:1.9.....I......._..................
�: 36................................_4;632.................................
.......-..._-......_._.-...-........._.._......_._._.._....._..........._-....._..
�:66........_...............16:56..._...........
Purple
08/20/01
11.68
850.57
6.50
2.990
5.08
23.79
_ __735
' 916
Purple
Tables 10 & 11.x1s Page 2 of 7 Revised: 11/28/01

i
TABLE 11
Phase I In Situ Chemical Oxidation Using Sodium Permanganate
Field Monitoring Data Summary
W. P. Ballard and Downgradient Properties
Greensboro, North Carolina
IT Corporation Project # 107535
Well
Identification
Date
Top of Casinng
Elevation
Feet
Depth to Water
Feet
Groundwater
Elevation
Feet
pH
S.U.
Specific
Conductance
mS/Cm
Dissolved
Oxygen
mg/L
Temperature
°C
Oxidation/Reduction
Potential (ORP)
mV
Color
..._......... DW-13._..._..__..
_...._O6/18/01...._................._86.
06/28/01
......_.................._......._10
13:11................._..........._
11.10
.._._..... ._...._.._.
850.00
_..._._.._6 23.._..-.._....-_
6.00
0.099 ....
0.102
- 6:94--
5.76
- -16.03...___........_-370._..........._..-...._...
15.89
417
Clear
Clear
06/28/01
11.13
849.97
5.98
0.102
6.34
15.94
419
Clear
06/29/01
11.53
849.57
6.03
0.110
7.63
15.95
416
Clear
..... _...... _..._- ----
07/02/01
-' -'- --..-
_ 07/03/01
.-._.-__ _ ..._.....--
11.79
--... ' - --'--
11.81
849.31
_ ...-._..._._.._-_..--
849.29
6.38
-._._._...._..__-......--
6.23
0.109
-- -._...
0.111
1.79
--_..._...-- - -
5.48
16.28
---._....._....._.
15.98
_ _
374
--_....
374
Clear
Clear
07/04/01
12.38
848.72
5.91
0.113
4.82
16.33
384
Clear
......................................._..........
07/05/01
07/09/01
__...._...................................................................._........._......._.........._.........................._.........................._.........._.._._.................................................._....._._._..............._.__............-._........_.........__._......_...-......_.....-.......................---
07/13/01
11.71
11.54
11.58
849.39
849.56
849.52
5.81
6.23
NG
0.113
0.122
NG
_ 5.91
5.50
NG
16.66
16.73
-...__...._..__._...._..._............._._..__..
NG
398 - _Clear
492 -
NG
Clear
Purple
08/03/01
12.92
848.18
7.63
0.131
5.51
16.79
689
Purple
08/20/01 __...
_..-...--_..._ _._
13.25
847.85
6.43
0.121
3.82
20.18
362
Light Pink
DW-14
--
- 06/18/01 -
860.06
22.41
037.65
10.60
0.466
3.11
17.99
133
Clear
07/02/01
22.50
837.56
10.01-
_
0.289
0.80
_
-18.01
_
130 -
Clear
.....
07/13/01
08/03/01
08/20/01
22.71
_.._._..._..-...----.._..
22.81
23.52
837.35
---- -
837.2.
836.54
... NG
__.._........._...
6.71
NG
--'--._......_....._..._
0.161
NG
_......
-- -
1.19
NG
-- '- '--.
27.91
NG
-- -- --- - --
_...._......_..._...- -- ' -- -'-
196
Clear
Clear
DW-15
...... ........... _... _...... _............
06/18/01
07/02/01
_... _.............. _..................
07/13/01
861.20
....................................................
25.59
-�
24.58
......................... _._....................... _...... ..._....._...
24.74
835.61
..__----__-_
836.62
__............ ........... ..............
836.46
9.84
-----------
9.25
.............................. _.__.....
NG
0.107
_-......._ ..._--
0.135
......... _....................... .............. _...
5.13
----.. _.._.-___.____.--
0.79
......................... _._..__......
NG
18.47
18.11
._..... _...........................
NG_
98
------__..._...______.
155
............ _.__... _......... -_........... _.... _-.
NG
Clear
Clear
Clear
08/03/01
25.08
836.12 --
- 10.03
_NG_
-0.122
1.78
18.56
289
Clear
08/20/01
25.51
835.69
6.42
0.138
2.19
21.36
260
Clear
DW-5 _
06/18/01
872.80
19.08
853.72
5.86
0.108
4.73
20.40
309
Clear
06/29/01
17.90
854.90
5.95
0.120
6.14
20.49
409
Clear
07/02/01
16.93
855.87
5.80
0.120
1.94
20.55
380
Clear
07/03/01
07/04/01
-07/05/01
17.55
-..._..__..........-...._.__..._...__...__-._.._........_.-...-
17.10
855.25
855.70
5.75
--' - .
6.33
0.122
_.............._.....-........_--
0.120
6.02
-.._..-._.-...-
6.09
20.49 --
._..._..- -'-
20.82
390 -
-- - -........ '--
378
Clear
Clear
17.11
855.69
5.15
0.128
0.12
20.55
387
Clear
............. _..._._.._-
07/09/01
_ _............._._..-.
07/13/01
0...%03%01................................................_._._._.........._..................._....3..._-._.....................................................__.._..................._..............._._.........._....................................................................._...................................._.........................
8
-.-_.....-.....__.._.._..._..._..._._................_......---..._.........._._..................._..__...._..._......_......--.--._.---..._....._._..-....._............._................._............._............_.._..._........._....-
17.90
17.14
23.0
854.90
855.66
849.77
6.50
NG
6.93
0.124
NG
0.109
5.21
NG
3.86
20.48
-._._......._._......._........._..._..__...__._...
NG
20.38
387 .._-..._
NG
_........_......._.........._...........................__..
342
Clear
Clear
Clear
0t3/20/01
26.26
846.54
-6.09 Y
0.094
-1.92
35.07
- 460 J--
Clear
Tables 10 & 11.xis Page 3 of 7 Revised: 11/28/01

TABLE 11
Phase I In Situ Chemical Oxidation Using Sodium Permanganate
Field Monitoring Data Summary
W. P. Ballard and Downgradient Properties
Greensboro, North Carolina
IT Corporation Project # 107535
Well
Date
Top of Casinng.
Depth to Water
Groundwater
pH
Specific
Dissolved
Temperature
Oxidation/Reduction
Identification
Elevation
Elevation
Conductance
Oxygen
Potential (ORP)
Color
Feet
Feet
Feet
S.U.
mS/Cm
mg/L
°C
mV
._DW_....................I......_06/18/01
...............
06/20/01
_
8.12
854.05
7.65
0.190
..................
4.75
........_....__.....................................................................
18.93
42
Clear
06/20/01
8.64
853.53
6.42
�0.191
4.42
19.18
257
Clear
0621l01_.
_..._..._.._8:1.7.................._....................._854:00..._.._..._......_......._6:52........_......_.__.....__
O6/21l01
8.20
853.
....._......__.._
..._.__4:63 .._.....
-..._19:00---......_._._..-.._.__�84.._.......
.Clear
06/22/01
8.90
.........
853.27
7.71
0.194
4.73
18.99
30
Clear
06l22/01
8.85
853.32
7.48
0.195
5.07
19.01
137
Clear
.._...................................................._.._........................................._..............................................._........_...........I.........._.....I................................._._...............................................-........_....._.........................................................._..._................._......._.....
06/25/01
8:49
853.68
6.40
0.193
5.23
19.86
494
Clear
.....................................................................................................................................................................................................................................................................................................................................................................................
06/25/01
8.49
853.68
7.33
0.192
4.74
_..................................._...._.._...__._...._......_......................__._..
19.18
124
Clear
06/26/01 -
_
8.10
854.07
7.39
0.194
.. ....................
4.98
..............................................................................................................
19.58
103
Clear
0627I01
8.11
854.06u�
7.69
0.194
4.82 _
19.51 --
82 - -
Clear
_..........................__............_..
06/28/01
............................................. ...... .........
8.10
......_..._.._................._......._._.........................
854.07
7.02
0.195--
3.60
18.89'
197_ __-
Clear
..........................................._................._............................................................................_
06/28/01
8.41
......._............................................................................................................................................................................................................................._...................................._..................................
_....__.._.............................._.........._.._.......
853.76
...............
7.31
....._..._............__.............
0.194
_........_...................._...................._......__._..._......_....._......_..._..._...__.............--
5.02
19.01
'..
193
Clear
06/29/01
8.29
853.88
7.34
0.210
5.28
18.89
.
232...........................
Clear
07/02/01
8.81
853.36
7.48
0.211
1.17
19.75
121
Clear
..................................................
07/03/01
..... ..................................................._...........__._..................................................................................................._............
8.55
853.62
�5.76 T
0.209
3.87
18.91
438
Clear
.................._..............._.........................................................
07/04/01
.............................................................
8.27
................................................................................._...................................................................................................................._............_..
.............. ........................................................................................................
853.90
6.15
0.212
_........._...._._....._............_........8........
4.90
19.07
403.......................
Clear
_ 07/05/01
7.90
854.27
6.71
0.214
.................................
3.43
.....................
19.38
237
Clear
07/09/01
8.71
853.46 -
7.22
0.212 _
_
3.34
18.95 -
164-�
Clear
_..........._ .........
07/13/01
_._...._...__..................._.........__.._._._...._...........__.._._.._................_.__..__..._...._...............__....._...._.._.......__..........._...._....................._.............
7.87
854.30
NG
NG
NG
NG
NG
Clear
....................................................................-................................................_........_...................................................................................................................................................................................................._................................._...............
08/03/01
8.95
853:22
8.91
0.186
__...._.....__.._..._......._........._............__._._._.._.__
4.17
.............. ...._..__..__......... ......_....... __
251
Clear
08/20/01
9.68
852.49
6.53
0.132
.
2.31
.............1...9.85
29.03
_...................................
473
Clear
DW-8
..._..................-.................................................._....._........................_...._......................................_..._....._...
06/18/01
861.44
4.96
856.48
6.35
0.084
7.08
17.62
65
Clear
..._......................................._................................_................................_........................................_........................................................................__................................................._...........................................................................
06/22/01
_.
5.54
855.90
6.51
0.083
7.49
..................................................3....
17.24
530
Clear
_
06/22/01
5.26
856.18
6.33
0.084
..
6.83
17.57
553
Clear
06/25/01
5.31
856.13
6.57
0.094 -
_
7.03
21.07
_
544
Clear
06/25/01
4.15
857.29
6.02
0.087
6.47
19.04
400
Clear
.....................................................................................................................................................................................................................................................................................................................................................................
06/26/01
5.03
856.41
6.36
0.093
7.45
21.46
519
Clear
06/27/01
5.44
856.00
6.62
0.092
.............._....................................................................................................................
7.66
21.31
495
Clear
06/28/01 -
-- 4.18
857.26
6.84
0_.086
5.95
18.52
360_
Clear
06/28/01
5.25
856.19
5.91
0.086
6.43
_
17.25
435
Clear
............ . .............................. _.....
06/29/01
...... ...................._................................._..................................._..............._..............................................................._.........................................................._......................................................................................
5.39
_856.05..._............................5.79................_.............._0.090........................._..._.7.26............................17.45..............._..._.._.._..__.....431................._..._._..
Clear
07102/01
5.68
855.76
6.21
0.091
1.86..........................17.32_......................................382
Clear
07/03/01
8.47
852.97
5.85
_
0.093
5.43 -
17.58
460
Clear
....................... ....... _...................................._........................._._._..._
07/03/01
. .................
NG
NG
5.75
0.099
5.31
19.91 !
390
Clear
...........................................................................................................................................................................................
07/03/01
........_............_..._..._......._..........
NG .....................................................................................................................
......_.._....... _._........_......... ..._............
NG
..... _.............._......_..
5.66
.......... _.........._... ......... _... _...... _......_...._......
0.096
._........_....._.
5.31
-.......__........_._._..__.......__...................._...._._...................__...-
19.14
389
Clear
07/04/01
5.04
B56.40
5.93
....................................................................................................
D.094
5.80
.
17.67
356
Clear
07/05/01
-
15.31
846.13
6.08
0.094
5.71
17.46
380
Clear
_......................._.......................
07/09/01�
............ _.........
............... _............._......._.........
.................. 6.24
855.20
6.44�
0.094
_
6.44�
17.64
368 �T
Clear
07/13101
_......5......................................._.........................................................................._....................................._......................................._.............
5.72
855.72
NG
NG
... .
.. NG.........................
..NG...... _.......
... _............ .............NG_.__...... ......__._.
Clear
08/03/01
_
13.21
848.23
8.11.................................0.082
................................5.44............................18.87........................................314............................
Clear
08/20/01
11.17
850.27
6.13
'0.085
4.58
23.58
794
Clear
Tables 10 & 11.x1s Page 4 of 7 Revised: 1128101

TABLE 11
Phase I In Situ Chemical Oxidation Using Sodium Permanganate
Field Monitoring Data Summary
W. P. Ballard and Downgradient Properties
Greensboro, North Carolina
IT Corporation Project # 107535
Well
Date
Top of Casinng
Depth to Water
Groundwater
pH
Specific
Dissolved
Temperature
Oxidation/Reduction
Identification
I
Elevation
Elevation
Conductance
Oxygen
Potential (ORP)
Color
Feet
Feet
Feet
S.U.
MS/Cm
mg/L
°C
mV
LMP-1
...._._......._........_.__......................_......_......._....._....__......_..._....._.-_....................------._....__._....._.__.............................--------...................._.............._....-
06/18/01
873.50
14.41
859.09
6.19
0.318
2.43
20.52
120
Clear
06/29/01
14.62
-14.32
858.88
-............._..............................----._.._...._.._......_.._._........__.._._-..................._...--._..._.__.._.._........._
5.60
0.310
1.92
20.43
390
Clear
07102/01
859.18
_
6.16
0.334 -
0.62
20.43
309
Clear
07/03/01
._._..._.._.._.._.........._..-...-_--....._..---._...._
14.58
............._._........................__...................._...................................._....._...._._._....._._.._....._...................__.........._..._......_...._....
858.92
- 5.53
0.324
3.11
20.26
369
Clear
....................................... ........
......._07/04101.........
.... ............. ................ ...................
......................_14;97....................... ....
..............,858:53...................
.............
__...._..........._......_..._._....._....._...._._.._.._..........._
1.71
20.23
......._.__.._..._ .._..._..........._... ..
309
Clear
07/05/01
12.94
860.56
.,5.93..............
4.64
......... ........_0,333..................
0.023 ...
..............7.85_.........................20.44.........................................432...........................
Clear
07/09/01 115.71
857.79
5.59
0.279
2.70
362
Clear
_
07/13/01
.....
- -----
15.71
_.._.__.- ..
- 857.79
- 6.36-
_
0.320-
1.29
_20.41
20.22
_
231
Clear
...---.........._............_.........__...__._...._...
08/03/01
- ._.....
-----.._........__....................._................._.__._.....__.._..............................................._....._....._.............---.._.._._._...._................._....
16.45
.
857.05
............ _......_...._...._.-
6.84
-- - ----.._.._...........
0.252
- ..... - - -
0.61
.._......_._...._... --.._.-...----.._......._....._._._..
20.08
305
Clear
--
08/20/01
16.98
856.52
5.82
..._.._._........-
0.263
---...__..__...............
0.38
-.._..... --
26.82-
---._......_........_...._..-- - .....
142
Clear
_
-
-
-
LMP-2
^ 06/18/01 -
871.41
12.B4
858.57
6.08
0.116
4.99
20.67
273
Clear
.._........._...._....._........._...._
06/28/01
...............__......._._......---.-._........._..._....................._.................--
- .._..-._._. __...._....................�......__..__..._...._._._..._.._............_....__..........__......_...._......_....._.._.-----...................._......__._..._.._.._........._.._...._...._..__........
13.31
858.10
5.36
0.115
3.82
20.45
-..-.__..._.__._....._..._..__.._....
440
Clear
06/29/01 _
-
.._........__......-...._._................._...._......._...._..._......._....__.........----..-......._............_.............._..._...._......_....._....--
13.38
858.03
5.52
0.120
5.27
---..__..._..................---...._.._.__..__....__.......
459
Clear
07/02/01
- NG V_.__-
NG -
- 6.99
T 0.063
--1.21
_20.43
- 30.76-
_
297 -
Brown Silty
............... ................
07/03/01
_._................. _...._..........
.._............................ .......
12.18
859.23
5.54
0.099
2.89
20.04
358
Clear
...................................
07/04/01
_...................................... ..................
.......... ..................................
............................................................
.
13.50
... ..................................
............. 857.91
...................
5.69
0.113
3.29
20.26
346
Clear
07/05/01
15.03
.............._....................................................
856.38
5.21
.......... ............................................
0.336
................. _.._...................
1.79
.................... .....
20.03
338
Clear
07/09/01
13.91
857.50
- 5.62
0.106
- 2.06-
20.29
- - 324
Clear
- ----
07/13/01
---.._-._...
_..._..___..-----.._._.....----
14.39 -
857.02
NG
NG
NG
NG
NG
Clear
.........._ ............ ...................... ...........
08/03101
.......... .......--........... ....__..._._...-._
.... ................ .................
..._._._.....
14.76
.................. .
--_....._..._._..-- -
856.65
-- _
8.51
..... ..__....__.._.__._.-.
0.058
-.. _ ..._....................
3.90
- ---
20.87
---.... --- .........----
522
Clear
08/20/01
15.54
856.87
5.67
0.082
0.74
37.05
357
Light Pink
MW-12
................_...._....-................_._.__..__.._....._........---..._....__..._.__..._..__........_........._..._........._..._.._............._
06/18/01
862.15
9.90
852.25
6.22
0.194
5.02
19.05
238
Clear
- .
O6/20/01
-..........._............._.........._.._._........
-----..............
9.4..
._.....__......__._.._..................................._..............
......_...._.........-_......_......._.........__........._.._._...
852.69
-- -.
- -
6.52
-.......__..._._._..............._...._...__._._............_.._........-
-........._..................__.............._..
__....._....._..._.__._.._..............................._._........__.......__._......._._..........__...._..--
4.29
18.94
203
Clear
06/20/01
9.54
852.61
6.178
0.184
._......_.-_.._...._.-.._.....----._........_.........._..........----
3.62
19.33
-----
253
Clear
_
06/21/01
9.62
852.53
_5.40
- 5.83
0.190
3.13
_
19.27
178
Clear
.........
06/21/01
9.23
852.92
6.24
0.185
4.27
19.14
06/22/01
................................................................................................................................................................
9.32
......... .........
852 83
........... ......... .....
6:24
............ ............... ..... ....
0.190
3.43
18.85
. ........
186
Clear
06/22/01
9.34
......
852.81
. .............
6.11
0.190
4.42
19.06
_..
270
Clear
06/25/01
9.30
852.85
5.42
0.155
3.69
20.13
438
Clear
........ ----- --..._-..__.......__._.._......._............__._.-....._.....
06/25/01
-
9.65
-------_....-......_...._
852.50
6.27
0.176
4.52
19.29
202
Clear
_............ _..................
06/26/01
_..............._.._....._
............_._............_.......-.
..........................
.._........... 9.47-_..........
...........
_....-.--_.........
_....... 852.68
._._....__
....... _................. --
6.32
-----......................... _........_.._._.._...------.....
0.180
4.72
............................... _............_....--
19.20
._._...._._._._.. ----
202
Clear
06/27/01
9.43
......._ ..........
852.72
_.
..._ ....._...._..._ .....
6.37_
......... __..
_... ........................._ _.......
0.191
.... ..
.....4......._.._.........................__.._....._............................................__.._........
4.20
19.31
- ...
192
Clear
06/28/01
9.36-
852.79 -
5.94
-0.185
--2.83
18.85 -
310
Clear
_..._......--- ---_ --
06/28/01
-------...-_...........__._..._.........__..__....._._.__
9.36 -_..._..._.._....._....._._...._..._.....__....._........__..__.-......_._..........._....._._.._.....
852.79
6.38
0.180
4.23
18.89
299
Clear
.
06/29/01 ... ...
.................
9.41
852.74
. .....
6.32
---......................_.._...._..__._._.....-._._-._.._._........._...._..
0.190
---- ..._._.._......._.
07/02101
9.48
852.67
6.63
.........
0.195
........................................
1.46
._._.- ..... ...
---....................
07/03/01
9.77
852.38
5.05
0.210
.
18.84
515
Clear
..............................__....
07/04/01
.. .............. .............._......_
................. _._..--..... ...................._..........._.........._
10.21 .
851.94
_
- 5.48
0.215 -
_2.76
- 3.12-
-19.12-
_ - 474
Clear
................. ... _............. _._..... _..._
07/05/01
................... .............
_
.......................
9.91
....................._.....
.........................................._
852.24
...
5.53
0.222
............ .....
3.33
............ ...........-._............
19.04
..............
362
Clear
07/09/01
....._..._.._.............
..- ... _........... _..........11.1
9.89
852._26.._.............................6.05................................_0.21.6................................3.97..._.............._.._..19.OB...................._..........._....319._.......................
Clear
07/13/01
9.45
-852.70
-NG
-_-NG-
NG -
- NG
NG
Clear
_._......__.._....
08/03/01
-----------._-....--
-- --
10.34
-------
851.81
7.81
0.121
3.30
- 21.06
351
Clear
OBI20/01................................_-...............................
......_10:90................_........................851.:25......_.........................`:50................................_0.156........_.........
_- -- _----._....
-.......
....... ..... ...... ......... ...-.--
-------------
_..........._2:14....................._27.71...
__---...--- -...
...
-- -- -- --
491
Clear
Tables 10 & 11.xls . Page 5 of 7 Revised: 11/28/01

TABLE 11
Phase I In Situ Chemical Oxidation Using Sodium Permanganate
Field Monitoring Data Summary
W. P. Ballard and Downgradient Properties
Greensboro, North Carolina
IT Corporation Project # 107535
Well
Date
Top of Casinng
Depth to Water
Groundwater
pH
Specific
Dissolved
Temperature
Oxidation/Reduction
Identification
I
Elevation
Elevation
Conductance
Oxygen
Potential (ORP)
Color
Feet
Feet
Feet
S.U.
ms/Cm
mg/L
°C
mV
MW-13
.......... _..................... _.......
06/18/01...................863.77........._............................._5:69.........................................._858.08................................_6.11................................._0;085...........
.. ......
7.03
16.57
350
Clear
0626/01
7.00
856.77
6.25
................................._.............................-............................................-........._.................................
0.089
9.24
17.57
515
Clear
06/27/01
7.55
86'6 22
6.36
0.092 LL
9.29�
-17.29
_
- 507 _
Clear
.........._._............................_06/28/01..._............._..............................................................._8.42._.......................
-. 855.35
...........__....._..._
6.15
0.099�.._
8.74
16.73
564
Clear
06/2e/01
`:10.........................................._858
.......................
67....................
._.._._............ ..................
5.97
.......... _.._..... _......._..__..._.......
0.099
...... ...._..._..... --.._...
8.50
-_...........-....._.._.............
15.40
......._.._.._.-- ---_........_...._---------
576
Clear
06/29/01
__-
8.31
- _ _._ _.._.._._�
855.46
6.10
0.110
8.85
15.73
.. _ 1..................
532
Clear
07/02/01
8.49
855.28
_...._..,___
6.45
_........_._._...:..._
0.119
r_ _
2.16
._. ___._._ ..._._....
17.05
._._ ..._......_._._.............. _....
405
Brownish Yellow
.
......................................................................................................................................................................
07/0
.3/01 8.81 .
854.96
6.13
0.119
7.42
15.90
594
Slightly pink
07/04/01
8.52
855.25
6.30
0.121
8.06
15.97
584
Pink
07/05/01
�
7.90
855.87
6.13
0.153
8.46
.................._
16.04
._..........................................................._...
547
Pink
_
07/09/01
_
8.63
_
658.14
-6.51
_ _
0.144 -
_
8.54
16.77
_
583 V
Purple
_............. ..... ..-.......... ........................_..
07/13/01
... ..... ...........
.... _......... _........-..._-.............
9.18
...._......_.-............_..............._....._......
854.59
..... _.._...... .......... _.....................
NG
......................... _....... -_.........-........_.......................
NG -........
NG
....... ......
NG
NG
Purple
...................................................................................................................................................I...............
08/03/01
12.11
851..6fi................._
8.89
....................._..............................................................................................._............................................................................._............--............................
0.080
.._...._.........._....._.__..__._...._T___............_..._..........__........_..._..................
6.48
16.61
457
Faint Pink
-�
08/20/01
11.66
852.11
6.04
5.23
26.90
417
Clear
�0.034
.............. MW-15............_06/18/01........................_872.10.._................................_15:79........................................._856.31.
...........-.
314
Clear
............................._..........................._06/29/01...........
... ...................... ................................................_75:68
................
856:42................................_5
............._5.................................0:047.............................._6.70............
06..............................._0.040
7.28
.20.54
............__.............._.._.__......_........_....................__.
20.51
457
Clear
07/02/01
15.99
856.11
5.29
0.042
2.35
.... _.... _....
20.60
.........................._....._......_......................-
417
Clear
07/03l01
16.01
856.09
4.90
0.045
6.25
20.54
432
Clear
--.._..-_.-..._-...�....._................._........_.__..................---
07/04/01
-...._..........-..........._...........-_........
16.17 _._...._..__....._......._............-......._......_............_..........................._._..._..._..._.._....._..........-.._.........._
855.93
6.13
0.077
2.27
20.22
388
Clear
07/05/01 ...........................................................................................................................
16.02
856..08..................................4.67...............................0.045
.__........_........__..__....._
6.45
...-....._...........-._...__........._........._......_-_-................____..
20.67
410
Clear
V 07/09/01
_
16.37
855.73
5.19
............................................................_................................................._.._..._...................I...........
0.037
7.06
20.70
411
Clear
07/13/01
16.36
855.74.__..
v VNG
NG
NG W
v-NG
NG --"-
Clear
08/03/01
21.13
850.97
5.31
0.032
mm 6.16
20.5
024.............................__3
:� �...........................40
. ...
74..._....................
............. ...... ..... ..........
528
Light Pink
MW-17
06/18/01
861.43
6.53
854.90
5.96
0.080
5.72
17.86
362
Clear
0622/01
..........-..-.-._._._._..._....._...._9:24.._
.............................._......_85219.._......._....._.........._6:36....-_..._................_0:081..._.........._......-.._..._6.39._........_..._......._17:87............_........_..
7...................._._..
Clear
06l22/01
.......................................................................
..............................._5.02.........................................._856.41.................................-6:��................................_0:082..............
18.49
551
Clear
06/25/01
5.58
855.85
6.97
0.090
. .5.34
....._............................................................................----..................................._........
5.81
19.95
525
Clear
06/25/01
5.61
855.82
6.54
0.088
5.39
19.99
524
Clear
._............................................... ......_..............._......................._............--..........................................................
0626/01
5.83...................._............._.....-855
60................................_6
62................................._0
088..............................._6.:03......._..............._20.33......................
508
Clear
............................................................................._........................................_-.
06/27l01
6.23
855.20
........... ................................................
7.09
0.087
6.36
20.57
......................_.................._.........._
462
Clear
06/28/01
6.19
855.24
....................................................................................................,
6.93
0.083
4.66
........_..............................-
17.91
.._._.............................................................
480
Clear
T
06/28/01
-
6.22
855.21
5.72
0.083
4.70
17.86
457
Clear
06/29/01
_0.....-._-_0.._........._
........ _.._..._.............._..._...................-_..........................................,
6.16
855:27
6.01
0.090
6.70
17.86
_
441
Clear
...........7102.... 7
6.19
............................................................5.2
..._..._......-_-................._.................._......................._..........................................................-........:................._..._._._._......._................................................._.........._............_.........._.._........
855..24
375
Clear
07/03/01
6.81
..................................6:25................................-0:089................................._...:84........................
854.62
7.18
0.940
3.99
_18.14....
............,
18.57
.....................................................................
250
Clear
07/04/01
6.04
855.39
5.92
0.091
4.62
17.94
424
Clear
........................._..........._.........._.._......................_.................................................._......_......................_.........................................................................................................................................................................................................................._...._
07/05/01
3.20
858.23
5.27
0.091
4.33
17.80
419
Clear
.................................................................................................................................................................................................................................................................................................................................................................................................
07/09/01
6.44
854.99
7.11
0.105
.......
5.44
.
20.26
337
Clear
07/13/01
6.36
855.07
NG
NG
.
NG
NG
NG
Clear
_
08/03/01 _
-�_
11.00
850.43
8.57
0.083
4.29
20.19
304
Clear
08/20/01
11.13
850.30
6.07
0.072
4.01
23.76
505
Clear
Tables 10 & 11.x1s Page 6 of 7
Revised: 1128101

TABLE 11
Phase I In Situ Chemical Oxidation Using Sodium Permanganate
Field Monitoring Data Summary
W. P. Ballard and Downgradient Properties
Greensboro, North Carolina
IT Corporation Project # 107535
Well
Date
Top of Casinng
Depth to Water
Groundwater
pH
Specific
Dissolved
Temperature
Oxidation/Reduction
Identification
Elevation
Elevation
Conductance
Oxygen
Potential (ORP)
Color
Feet
Feet
Feet
S.U.
ms/cm
mg/L
°C
my
_MW-18......................._06/18/01.._........_
....
862.26
.................._....
10.65 .................................._......_._.__................................................................_.........._...._...................._.........
851.61
6.24
0.089
4.42
18.16
331
Clear
_
_06/21/01
10.72
851.54
7.60
0.090
__.............._.._.._............-......._.....
3.08
._._..__..................__._..-..._............_......_.............._.
18.10
112
Clear
06/22/01
10.27
851.99
6.10
_
0.485
3.10
18.22
746
Purple
- - --
0622/01
-0625/01-
! -
- 10.31 -_
-
851.95
6.01
0.461
3.75
18.06
741
Purple
........ ._......_.._ -
------..._._ _._............_..--
_
- _._....
10.43
----.._..__.._....._.__............._...._....._........_
851.83 ..--...__..._......
- -6.26- -
--0.198 -
.._.._..._.....----...__
...... 2.70
'-18.62
- - 734 -
Purple
06/25/01
10.56
851.70
6.10
0.189
3.97
18.76
703
Purple
06/26/01
10.63
851.63
-6.04
0.198
3.96
18.96
699
Purple
0627/01
10.63
851.63
6.11
0.159
4.15
19.33
690
Purple
_.........._......___...
06/28/01. ....................__._._
_.
10.50
_................__.............._.......
851.76
_.._._._...__.._....................._
6.74 ......_.__.._._..
0.136
------
3.01
17.98
623
Purple
06/28/01
10.52
851.74
5.77
0.130
_._..._._-.._...
3.03
_.._-
18.11
_ --.-. ---
679
Purple
06/29/01
10.49
851.77
6.18
0.130
5.07
17.90
638
Purple
07/02101-
10.63
851.63
0.115
0.82
17.96
577
Pink
.............._..__..........._..........._..............._....._..._....................._.._........................_..__._..._......_.._...........................................
07/03/01
10.67
851.59�
_........_..._...._................_...._.._......_........._......
_5.78
- 5.61 --
_
- 0.116
. .......... --
2.84
17.98
_Light
634
07/04/01
10.82
851.44
5.80
0.115
2.65
. .....
18.11
. _Purple
646
Pink
07/05/01
10.68
851.68
5.58
0.117
4.44
18.31
592
Faint Pink
07/09/01
8.95
853.31
5.81
0.130
3.28
18.24
617
Pink
07/13/01
10.78
851.48
NG
NG
NG
NG
NG
Light Pink
08/03/01
12.76
849.50
7.50
0.085
3.22
18.39
363
Clear
08/20/01
12.67
849.59
5.67
0.075
1.58
31.10
922
Light Pink
_.........._MW-22..... ...............
_06/18/01.........
................861.83
Clear i
06/27/01
...............
........... --_10.29......... _.......
9.87
................_851:`.............. ... _........._.......6.05
851.96
..............
6.43
....... _...._0;101..........._....
0.102
... _........._6:19..............
7.95
.._........_16.37... .......
16.57
....._.............. __._378....... ._....__._...
477
Clear
06/28/01
8.48
853.35
6.18
0.105
6.01
15.99
388 -
Clear
06/28/01
9.43
852.40
6.26
0.105
6.98
15.94
407
Clear
-_._._.._..........-.__......._06/29101
...
-
_. _._...._..........._._
9.79
...----- - -- -
852.04
- ----
6.07
0.110
7.74
16.17
415
Clear
07/02/01
10.08
...__.... -
851.75
- _ .........
6.17
- - -- .
0.111
1.67
16.06
---
385
Clear
07/03/01
10.08
851.75
6.28
0.113
5.48
16.31
371
Clear
07/04/01
10.19
851.64
6.13
0.119
5.69
16.27
353
Clear
---.--._............_...._._....
0. _...._
.......
---- 10:06---
..........._851.:��..__...
5.89
0.114--._
_
407
Clear
07/09/01
7.05
_
854.78
_
5.93
0.113
_�_�_.�-
5.50
---1628-
16.59
-- -...._......
427
Clear
07/13/01
10.31
851.52
NG
NG
NG
NG
NG
Clear
08/03/01
12.04
849.79
7.91
0.097
5.22
16.42
564
Clear
08/20/01
12,18
849.65
6.07
0.093
3.39
27.18
288-
Clear
MW-23
06/18/01
B61.15
24.48
836.67
6.72
0.613
2.02
18.29
-82
Clear
--
07./02/01
_
22.29 _1
838.86
-'837.09
7.65
0.039
1.28
1 18.31--
210
Clear
- - ---'
07/13/01
.._...._................._.._
._..._....__...__......_........._._...._..
24.06
- - -- -..
_....----.._...._......._..._....._._....
NG
- NG
-
NG
NG
NG -
Clear
08/03/01
23.45
837.70
..........................._..._.._.__..._.....
7.32
- .......__...,.
0.816
---.-.....-..._............_._
1.19
18.26
_...._._._...__....-.........- ..__.....__.......
123
Silty Tan
08/20/01
24.33
836.82
5.84
0.494 _
0.95
23.96
151
Silty Tan
Notes: NG Denotes well was not gauged.
Tables 10 6 11.x1s Page 7 of 7 Revised: 1128101

Table 12
Pre- and Post - Pilot Test Injection Groundwater Data Summary - Pilot Test Area
W.P. Ballard and Downgradient Properties
Greensboro, North Carolina
WELL ID:
MW-1
MW-2
6/22/00
9/7/00
10/19/00
3/8/01
8/22/01
SAMPLE DATE:
EPA 601/602 Compounds: (ug/L)
NCAC 2L
Benzene
1
<1.0
<1.0
NA
NA
NA
<1.0
<1.0
NA
NA
NA
NA
1,2 Dichlorobenzene
620
<1.0
<1.0
<1.0
<1.0
<1.0
<1.0
<1.0
<1.0
<1.0
<5.0
<5.0
1,3 Dichlorobenzene
620
<1.0
<1.0
<1.0
<1.0
<1.0
<1.0
<1.0
<1.0
<1.0
<1.0
<1.0
enzene
29
<1.0
<1.0
<1.0
NA
NA
<1.0
<1.0
<1.0
NA
NA
NA
Toluene
Tolue
1,000
<1.0
<1.0
<1.0
NA
NA
<1.0
<1.0
<1.0
NA
NA
NA
m,p-Xylenes
530
<1.0
<1.0
<1.0
NA
NA
<1.0
<1.0
<1.0
NA
NA
NA
o-Xylenes
530
<1.0
<1.0
<1.0
NA
NA
<1.0
<1.0
<1.0
NA
NA
NA
Bromoform
0.19
<1.0
<1.0
<1.0
<1.0
<1.0
<1.0
<1.0
<2.0
<1.0
<1.0
<1.0
Bromomethane
None
<1.0
<1.0
<1.0
<1.0
<1.0
<1.0
<1.0
<1.0
<1.0
<1.0
<1.0
Carbon Tetrachloride
0.3
<1.0
<1.0
<1.0
<1.0
<1.0
<1.0
<1.0
<1.0
<1.0
<1.0
<1.0
Chloroform
0.19
<1.0
<1.0
<1.0
1
2
<1.0
<1.0
<1.0
<1.0
<1.0
5.2
Chloromethane
None
<1.0
<1.0
<1.0
<1.0
<1.0
<1.0
<1.0
<1.0
<1.0
<1.0
<1.0
Vinyl Chloride
0.015
< 1.0
< 1.0
< 1.0
<1.0
<1.0
<1.0
<1.0
<1.0
<1.0
<1.0
<1.0
Dibromochloromethane
0.41
<1.0
<1.0
<1.0
<1.0
<1.0
<1.0
<1.0
<1.0
<1.0
<1.0
<1.0
Ethylene Dibromide
0.0004
< 1 .0
<1.0
< 1.0
<1.0
<1.0
<1.0
<1.0
<1.0
<1.0
<1.0
<1.0
1,1-Dichloroethane
700
<1.0
<1.0
<1.0
<1.0
<1.0
<1.0
<1.0
<1.0
<1.0
<1.0
<1.0
1,2-Dichloroethane
0.38
<1.0
<1.0
<1.0
<1.0
<1.0
<1.0
<1.0
<1.0
<1.0
<1.0
<1.0
1,1-Dichloroethene
7
<1.0
1.0
<1.0
<1.0
<1.0
<1.0
<1.0
<1.0
<1.0
<1.0
5.9
cis-1,2-Dichloroethene
70
<1.0
14.7
<1.0
<1.0
<1.0
95.7
9.1
<1.0
<1.0
<1.0
<1.0
trans-1,2-Dichloroethene
70
<1.0
<1.0
<1.0
<1.0
<1.0
<1.0
<1.0
<1.0
<1.0
<1.0
<1.0
1,2-Dichloropropane
0.56
<1.0
<1.0
<1.0
<1.0
<1.0
<1.0
<1.0
<1.0
<1.0
<1.0
<0
1.
1.
cis-1,3-Dichloropropene
<1.0
<1.0
<1.0
<1.0
<1.0
<1.0
<1.0
<1.0
<1.0
<1.0
88
trans- 1,3-Dichloropropene
0.2
<1.0
<1.0
<1.0
<1.0
<1.0
<1
<1.0
<1.0
<1.0
<1.0
<1.0.0
Methylene Chloride
5
<5.0
<5.0
<5.0
<5.0
<5.0
<5.0
<5.0
<5.0
<5.0
<1.0
<1.0
Tetra chloroethene
0.7
3,420
2,540
2240
680
2,310
358
69
72
46
68
184
1,1,1-Trichloroethane
200
<1.0
<1.0
<1.0
<1.0
<1.0
<1.0
<1.0
<1.0
<1.0
<1.0
<1.0
1,1,2-Trichloroethane
None
<1.0
<1.0
<1.0
<1.0
<1.0
<1.0
<1.0
<1.0
<1.0
<1.0
<1.0
1,1,2,2-Tetrachchloroethane
0.17
<1.0
<1.0
<1.0
<1.0
<1.0
<1.0
<1.0
<1.0
<1.0
<1.0
<1.0
Trichloroethene
2.8
6.5
<50
3.1
2
2
66.7
8.7
<1.0
2.0
<1.0
39.8
TOTAL VOCs
3,427
2,556
2,243
683
2,314
520
86.8
72.0
48.2
68.0
322.9
Metals: (mg/L)
Iron
300
0.150
0.176
NA
NA
NA
NA
70.400
NA
NA
NA
NA
Ferrous Iron
None
<0.100
<0.100
NA
NA
NA
NA
0.190
NA
NA
NA
NA
Manganese
50
0.042
0.043
NA
NA
NA
NA
2.710
NA
NA
NA
NA
Ferric Iron
None
0.150
0.176
NA
NA
NA
NA
70.200
NA
NA
NA
NA
Miscellaneous Chemistry: (mg/L)
Chloride
250
NA
NA
NA
NA
NA
NA
NA
NA
<1.0
NA
NA
Chemical Oxygen Demand
None
NA
NA
NA
NA
NA
NA
NA
NA
NA
NA
NA
Percent Reduction (VOCs)
25%
35%
80%
32%
83%
86%
91 %
87%
38%
�49%
Percent Reduction (PCE)
26%
35%
80%
32%
81 %
80%
87%
81 %
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 4124100
Monitoring Report /Table 12.xls / Phase 1 Wells Page 1 of 5 Revised: 11/28/01

Table 12
Pre- and Post - Pilot Test Injection Groundwater Data Summary - Pilot Test Area
W.P. Ballard and Downgradient Properties
Greensboro, North Carolina
WELL ID:
MW-3
MW4
SAMPLE DATE:
3/22/00
6/23/00 1
9/8/00 1
9/14/00
10/18/00
3/8/01
8/22/01 1
3/22/00
6/22/00
9/7/00
10/19/00
3/8/01
8/23/01
EPA 601/602 Compounds: (ug/L)
NCAC 2L
Benzene
1
<1.0
<50.0
<1.0
<1.0
<1000
NA
<1.0
<1.0
<10.0
<1.0
<1000
NA
2.4
1.2 Dichlorobenzene
620
<1.0
<50.0
<1.0
<1.0
<1000
<1.0
<1.0
<1.0
<10.0
<1.0
<1000
<1.0
<1.0
1,3 Dichlorobenzene
620
<1.0
<50.0
<1.0
<1.0
<1000
<1.0
<1.0
<1.0
<10.0
<1.0
<1000
<1.0
<1.0
Ethylbenzene
29
<1.0
<50.0
<1.0
<1.0
<1000
NA
<1.0
<1.0
<10.0
<1.0
<1000
NA
1.4
Toluene
1,000
13.0
75.0
<1.0
<1.0
<1000
NA
15.5
<1.0
26.0
<1.0
<1000
NA
2.4
m,p-Xylenes
530
<1.0
<50.0
<1.0
<1.0
<1000
NA
3.5
1.5
18.0
<1.0
<1000
NA
16.4
o-Xylenes
530
3.3
<50.0
<1.0
<1.0
<1000
NA
<1.0
1.0
348.0
<1.0
<1000
NA
NA
Bromoform
0.19
<1.0
<50.0
<2.0
<1.0
<1000
18
18
<1.0
<10.0
<2.0
<1000
<1.0
<1.0
Bromomethane
None
<1.0
<50.0
<1.0
<1.0
<1000
<1.0
<1.0
<1.0
<10.0
<1.0
<1000
<1.0
<1.0
Carbon Tetrachloride
0.3
3.7
<50.0
<1.0
<1.0
<1000
3
5
<1.0
<10.0
<1.0
<1000
<1.0
<1.0
Chloroform
0.19
9.7
<50.0
50
<1.0
<1.0
<1000
<1.0
43.7
<1.0
<10.0
<1.0
<1000
8
<50
Chloromethane
None
<1.0
<50.0
<.0
1
<1.0
<1000
<1.0
<1.0
<1.0
<10.0
<1.0
<1000
<1.0
<1.0
Vinyl Chloride
0.015
<1.0
<50.0
<1.0
<1.0
<1000
<1.0
<1.0
<1.0
<10.0
<1.0
<1000
<1.0
<1.0
Dibromochloromethane
0.41
<1.0
<50.0
<1.0
<1.0
<1000
33
33
<1.0
<10.0
<1.0
<1000
1
<1.0
Ethylene Dibromide
0.0004
<1.0
<50.0
<1.0
<1.0
<1000
<1.0
<1.0
<1.0
<10.0
<1.0
<1000
<1.0
<1.0
1,1-Dichloroethane
700
<1.0
<50.0
<1.0
<1.0
<1000
<1.0
<1.0
<1.0
<10.0
<1.0
<1000
<1.0
<1.0
1,2-Dichloroethane
0.38
<1.0
<50.0
<1.0
<1.0
<1000
<1.0
<1.0
<1.0
<10.0
<1.0
<1000
<1.0
<1.0
1,1-Dichloroethene
7
3.4
< 50.0
<1.0
<1.0
<1000
3
3
<1.0
<10.0
<1.0
<1000
<1.0
<1.0
cis- 1,2-Dichloroethene
70
210.0
210.0
<1.0
<1.0
<1000
166
<1
2.7
2,650
<1.0
<1000
415
90
trans- 1,2-Dichloroethene
70
3.2
<50.0
<1.0
<1.0
<1000
4
2
<1.0
11.0
<1.0
<1000
5
<1
1,2-Dichloropropane
0.56
<1.0
<50.0
<1.0
<1.0
<1000
<1.0
<1.0
<1.0
<10.0
<1.0
<1000
<1.0
<1.0
cis- 1,3-Dichloropropene
<1.0
<50.0
<1.0
<1.0
<1000
<1.0
<1.0
<1.0
<10.0
<1.0
<1000
3
3
trans-1,3-Dichloroprope ne
0.2
<1.0
<50.0
<1.0
<1.0
<1000
3
3
<1.0
<10.0
<1.0
<1000
<1.0
<1.0
Methylene Chloride
5
<5.0
<250
<5.0
<5.0
<5000
<5.0
<5.0
<5.0
<50.0
<5.0
<5000
<5.0
<5.0
Tetrachloroethene
0.7
156,000
218,000
154,000
130,000
148,000
138,000
126,000
13,400
90,500
41,200
54,800
44,800
12,800
1,1,1-Trichloroethane
200
2.0
<50.0
<1.0
<1.0
<1000
2
3
<1.0
<10.0
<1.0
<1000
<1.0
<1.0
1,1,2-Trichloroethane
None
52.5
<50.0
<1.0
<1.0
<1000
42
40
<1.0
<10.0
<1.0
<1000
<1.0
<1.0
1,1,2,2-Tetrachchloroethane
0.17
5.4
<50.0
<1.0
<1.0
<1000
<1.0
<1.0
<1.0
<10.0
<1.0
<1000
<1.0
<1.0
Trichloroethene
2.8
<1000
135.0
<1.0
<1.0
<1000
90
<1
7.6
627.0
<1.0
<1000
880
370
TOTALVOCs
156,306
218,420
154,000
130,000
148,000
138,364
126,170
13413
94,180
41,200
541800
46,112
13,286
Metals: (mg/L)
Iron
300
0.200
<0.050
NA
NA
NA
NA
NA
0.230
2.600
NA
NA
NA
NA
Ferrous Iron
None
<0.100
<0.100
NA
NA
NA
NA
NA
<0.100
<0.100
NA
NA
NA
NA
Manganese
50
0.098
0.150
NA
NA
NA
NA
NA
0.541
2.030
NA
NA
NA
NA
Ferric Iron
None
0.200
<0.100
NA
NA
NA
NA
NA
0.230
2.600
NA
NA
NA
NA
Miscellaneous Chemistry: (mg/L)
Chloride
250
NA
NA
NA
NA
5.3
NA
NA
NA
NA
NA
1.6
NA
NA
Chemical Oxygen Demand
None
<3.00
3.4
NA
NA
NA
NA
NA
NA
NA
NA
NA
NA
NA
Percent Reduction (VOCs)
-40%
1 1 %
1 17%
1 5%
11 %
19%
-602%
-207%
-309%
-244%
1
Percent Reduction (PCE)
-40%
1 %
17%
5%
12%
19%
-575%
-207%
-309%
-234%
4%
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 4124100
Monitoring Report /Table 12.xls / Phase 1 Wells Page 2 of 5 Revised: 11/28/01

Table 12
Pre- and Post - Pilot Test Injection Groundwater Data Summary - Pilot Test Area
W.P. Ballard and Downgradient Properties
Greensboro, North Carolina
MW-5
MW-6
DW-1
WELL ID:
3/22/00
6/23/00
9/7/00
10/19/00
3/8/01
8/22/01
3/22/00
9/7/00
10/19/00 1
8/22/01
3/22/00
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
NA
NA
<10.0
<50.0
<50.0
NA
<1.0
<20.0
<50.0
1,2 Dichlorobenzene
620
<1.0
<10.0
<1.0
< 100
<1.0
<1.0
<10.0
<50.0
<50.0
<1.0
<1.0
<20.0
<50.0
1,3 Dichlorobenzene
620
<1.0
<10.0
<1.0
<100
<1.0
<1.0
<10.0
<50.0
<50.0
<1.0
<1.0
<20.0
<50.0
Ethylbenzene
29
<1.0
<10.0
<1.0
NA
NA
NA
<10.0
<50.0
<50.0
NA
<1.0
<20.0
<50.0
Toluene
1,000
<1.0
<10.0
<1.0
NA
NA
NA
<10.0
<50.0
<50.0
NA
<1.0
<20.0
<50.0
m,p-Xylenes
530
<1.0
<10.0
<1.0
NA
NA
NA
<10.0
<50.0
<50.0
NA
<1.0
<20.0
<50.0
o-Xylenes
530
<1.0
<10.0
<1
NA
NA
NA
<.0 10.0
<50.0
<50.0
NA
<1.0
<20.0
<50.0
Bromoform
0.19
<1.0
<10.0
<2.0
<100
<1.0
<1.0
<10.0
<50.0
<50.0
<1.0
<1.0
<20.0
<50.0
o a
Brom<
None
<1.0
<10.0
<1.0
<100
1.0
<1.0
<10.0
<50.0
<50.0
<1.0
<1.0
<20.0
<50.0
Tetra
Carbon Tetrachloride
Carbon
<1.0
<10.0
<1.0
<100
<1.0
<1.0
<10.0
<50.0
<50.0
<1.0
<1.0
<20.0
<50.0
Chloroform
.1
0.19
<1.0
<10.0
<1.0
<100
1
10
<10.0
<50.0
<50.0
<1.0
<1.0
<20.0
<50.0
Chloromethane
None
<1.0
<10.0
<1.0
<100
<1.0
<1.0
<10.0
<50.0
<50.0
<1.0
<1.0
<20.0
<50.0
Vinyl Chloride
0.015
<1.0
<10.0
<1.0
<100
<1
<1.0
<10.0
<50.0
<50.0
<1.0
<1.0
<20.0
<50.0.0
Dibromochloro methane
0.41
<1.0
<10.0
<1.0
<100
3
3
<10.0
<50.0
<50.0
<1.0
<1.0
<20.0
<50.0
Ethylene Dibromide
0.0004
<1.0
<10.0
<1.0
<100
<1.0
<1.0
<10.0
<50.0
<50.0
<1.0
<1.0
<20.0
<50.0
1, 1 -Dichloroethane
700
<1.0
<10.0
<1.0
<100
<1.0
<1.0
<10.0
<50.0
<50.0
9.4
16.6
<20.0
<50.0
1,2-Dichloroethane
0.38
<1.0
<10.0
<1.0
<100
<1.0
<1.0
<10.0
<50.0
<50.0
4.4
<1.0
<20.0
<50.0
1,1-Dichloroethene
7
6.0
<10.0
<1.0
<100
12
35
296
445
470
450
<1.0
26.0
470<50.0
cis-1,2-Dichloroethene
70
<1.0
<10.0
<1.0
<100
2
3
<10.0
<50.0
6.5
7.6
<20.0
<50.0
trans-ichlor
70
<1.0
<10.0
<1.0
<100
<1.0
<1.0
<10.0
<50.0
<50.0
3.7
<1.0
<20.0
<50.0
propoethene
1,2-Dichloropropane
0.56
<1.0
<10.0
<1.0
<100
<1.0
<1.0
<10.0
<50.0
<50.0
<1.0
<1.0
<20.0
<50.0
cis
<1.0
<10.0
<1.0
<100
<1.0
<1.0
<10.0
<50.0
<50.0
<1.0
<1.0
<20.0
<50.0
-1 3ic ichlorropene
trans-1,3-Dichloropropene
05
<1.0
<10.0
<1.0
<100
<1.0
<1.0
<10.0
<50.0
<50.0
<1.0
<1.0
<20.0
<50.0
Methylene Chloride
5
<5.0
<50.0
<5.0
<500
10
1
<50.0
<250
<250
<5
<5.0
<100
<250
Tetra chloroethene
0.7
8,120
8,220
5,880
5,060
1,940
7,520
101
125
255
166
358
464
255
1,1,1-Trichloroethane
200
<1.0
<10.0
<1.0
<100
<1.0
<1.0
<10.0
<50.0
<50.0
30.3
8.8
<20.0
<50.0
1,1,2-Trichloroethane
None
<10.0
<1.0
<100
3
1
<10.0
<50.0
<50.0
9.0
<1.0
<20.0
<50.0
1,1,2,2-Tetrachchloroethane
0.17
<11.. 0
<10.0
<1.0
<100
<1.0
<1.0
<10.0
<50.0
<50.0
<1.0
<1.0
<20.0
<50.0
Trichloroethene
2.8
4.2
<10.0
<1.0
<100
5
1
<10.0
<50.0
<50.0
<1
11.2
<20.0
<50.0
TOTAL VOCs
8,134
8,220
5,880
5,060
1,976
7,575
397
570
725
679
402
490
725
Metals: (mg/L)
Iron
300
0.223
1.110
NA
NA
NA
NA
NA
NA
NA
NA
NA
NA
NA
Ferrous Iron
None
<0.100
<0.1
NA
NA
NA
NA
NA
NA
NA
NA
NA
NA
NA
Manganese
50
0.026
0.095
NA
NA
NA
NA
NA
NA
NA
NA
NA
NA
NA
Ferric Iron
None
0.223
1.110
NA
NA
NA
NA
NA
NA
NA
NA
NA
NA
NA
Miscellaneous Chemistry: (mg/L)
Chloride
250
NA
NA
NA
1.4
NA
NA
NA
NA
1.6
1.6
NA
NA
1.6
Chemical Oxygen Demand
None
NA
NA
NA
NA
NA
NA
NA
NA
NA
NA
NA
NA
Percent Reduction (VOCs)
-1 %
28%
38%
76%
7%
-44%
-83%
-71 %
-22%
0
-8%
Percent Reduction (PCE)
-1 %
1 28%
38%
1 76%
7%
-24%
-152%
-64%
-30%
29%
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 4124100
Monitoring Report /Table 12.xls / Phase 1 Welts Page 3 of 5 Revised: 11/28/01

Table 12
Pre- and Post - Pilot Test Injection Groundwater Data Summary - Pilot Test Area
W.P. Ballard and Downgradient Properties
Greensboro, North Carolina
WELL ID:
DW-3
DW-4
F- SAMPLE DATE:
3/23/00
6/23/00
9/7/00
10/18/00 1
3/8/01
8/22/01
3/23/00
6/22/00 1
9/14/00
10/19/00 1
3/8/01 1
8/22/01
3/23/00
6/23/00
EPA 601/602 Compounds: (ug/L)
NCAC 2L
Benzene
1
<1.0
<20.0
<1.0
<1000
NA
3.2
<1.0
<10.0
NA
NA
NA
NA
<1.0
<1.0
1,2 Dichlorobenzene
620
<1.0
<20.0
<1.0
<1000
<1.0
<1.0
<1.0
<10.0
<1.0
<50.0
<1000
<500
<1.0
<1.0
1,3 Dichlorobenzene
620
<1.0
< 20.0
<1.0
<1000
<1.0
<1.0
<1.0
<10.0
<1.0
<50.0
<1000
<500
<1.0
<1.0
Ethylbenzene
29
<1.0
<20.0
<1.0
<1000
NA
<1.0
<1.0
<10.0
NA
NA
NA
NA
<1.0
<1.0
Toluene
1,000
9.6
<20.0
<1.0
<1000
NA
11.0
<1.0
<10.0
NA
NA
NA
NA
<1.0
<1.0
m,p-Xylenes
530
<1.0
<20.0
<1.0
<1000
NA
<1.0
<1.0
<10.0
NA
NA
NA
NA
<1.0
<1.0
o-Xylenes
530
<1.0
< 20.0
<1.0
<1000
NA
<1.0
<1.0
<10.0
NA
NA
NA
NA
<1.0
<1.0
Bromoform
0.19
<1.0
<20.0
<2.0
<1000
<1.0
<1.0
<1.0
<10.0
<1.0
<50.0
<1000
<500
<1.0
<1.0
Bromomethane
None
<1.0
<20.0
<1.0
<1000
<1.0
<1.0
<1.0
<10.0
<1.0
<50.0
<1000
<500
<1.0
<1.0
Carbon Tetrachloride
0.3
<1.0
<20.0
<1.0
<1000
<1.0
<1.0
<1.0
<10.0
<1.0
<50.0
<1000
<500
<1.0
<1.0
Chloroform
0.19
1.4
<20.0
<1.0
<1000
3
5
<1.0
<10.0
<1.0
<50.0
<1000
<500
<1.0
<1.0
Chloromethane
None
<1.0
<20.0
<1.0
<1000
<1.0
<1.0
<1.0
<10.0
<1.0
<50.0
<1000
<500
<1.0
<1.0
Vinyl Chloride
0.015
<1.0
< 20.0
<1.0
<1000
<1.0
<1.0
<1.0
<10.0
<1.0
<50.0
<1000
<500
<1.0
2.1
Dibromochloromethane
0.41
<1.0
<20.0
<1.0
<1000
18
<1.0
<10.0
<1.0
<50.0
<1000
<500
<1.0
<1.0
Ethylene Dibromide
0.0004
<1.0
<20.0
<1.0
<1000
3
<1.0
<10.0
<1.0
<50.0
<1000
<500
<1.0
<1.0
1,1-Dichloroethane
700
<1.0
<20.0
<1.0
<1000
<1.0
<1.0
<1.0
<10.0
<1.0
<50.0
<1000
<500
<1.0
<1.0
1,2-Dichloroethane
0.38
<1.0
<20.0
<1.0
<1000
<1.0
<1.0
<1.0
<10.0
<1.0
<50.0
<1000
<500
<1.0
<1.0
1,1-Dichloroethene
7
<1.0
<20.0
<1.0
<1000
<1.0
1.7
<1.0
<10.0
<1.0
<50.0
<1000
<500
<1.0
1.7
cis-1,2-Dichloroethene
70
7.9
<20.0
<1.0
<1000
4
6
8.7
<10.0
<1.0
<50.0
<1000
<500
<1.0
1.9
trans-1,2-Dichloroethene
70
<1.0
<20.0
<1.0
<1000
<1.0
<1.0
<1.0
<10.0
<1.0
<50.0
<1000
<500
4.0
5.6
1,2-Dichloropropane
0.56
<1.0
<20.0
<1.0
<1000
<1.0
<1.0
<1.0
<10.0
<1.0
<50.0
<1000
<500
<1.0
<1.0
cis- 1,3-Dichloropropene
<1.0
<20.0
<1.0
<1000
<1.0
<1.0
<1.0
<10.0
<1.0
<50.0
<1000
<500
<1.0
<1.0
trans- 1,3-Dichloropropene
0.2
<1.0
<20.0
<1.0
<1000
<1.0
<1.0
<1.0
<10.0
<1.0
<50.0
<1000
<500
<1.0
<1.0
Methylene Chloride
5
<5.0
<100
<5.0
<5000
<5.0
<5.0
<5.0
<50.0
<5.0
<250
<5000
<2500
<5.0
<5.0
Tetra chloroethene
0.7
73,200
932
27,600
48,800
48,200
62,000
24,900
20,000
<1.0
<50.0
<1000
<500
1,670
1,380
1,1,1-Trichloroethane
200
<1.0
< 20.0
<1.0
<1000
<1.0
<1.0
<1.0
<10.0
<1.0
<50.0
<1000
<500
<1.0
<1.0
1,1,2-Trichloroethane
None
<1.0
<20.0
<1.0
<1000
18
22
<1.0
<10.0
<1.0
<50.0
<1000
<500
<1.0
<1.0
1,1,2,2-Tetrachchloroethane
0.17
<1.0
<20.0
<1.0
<1000
<1.0
<1.0
<1.0
<10.0
<1.0
<50.0
<1000
<500
<1.0
<1.0
Trichloroethene
2.8
32.5
<20.0
<1.0
<1000
25
20
20.4
<10.0
<1.0
<50.0
<1000
<500
39.9
81.9
TOTAL VOCs
73,251
932
27,600
48,800
48,271
62,069_
24,929
20,000
0
0
0
0
1,714
1,473
Metals: (mg/L)
Iron
300
0.140
<0.0500
NA
NA
NA
NA
0.347
0.693
NA
NA
NA
NA
0.680
10.800
Ferrous Iron
None
<0.100
<0.100
NA
NA
NA
NA
<0.100
<0.100
NA
NA
NA
NA
0.170
0.490
Manganese
50
0.017
29.200
NA
NA
NA
NA
0.017
4.940
NA
NA
NA
NA
<0.100
0.210
Ferric Iron
None
0.140
<0.100
NA
NA
NA
NA
0.347
0.693
NA
NA
NA
NA
0.510
10.300
Miscellaneous Chemistry: (mg/L)
Chloride
250
NA
NA
NA
37.0
NA
NA
NA
NA
NA
<50.0
NA
NA
NA
NA
Chemical Oxygen Demand
None
6.3
<30.0
NA
NA
NA
NA
NA
NA
NA
NA
NA
NA
<3.00
41.2
Percent Reduction (VOCs)
99%
62%
33%
34%
1 15%
20%
100%
100%
1 100%
100%
14%
Percent Reduction (PCE)
99%
62%
33%
34%
15%
20%
100%
100%
1 100%
100%
17%
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 4124100
-1
0/18/00 1 3/8/01
<1.0
<1.0
NA
<1.0
<1.0
<1.0
<1.0
<1.0
<1.0
<1.0
<1.0
NA
<1.0
<1.0
NA
<1.0
<1.0
NA
<1.0
<1.0
NA
<2.0
<2.0
<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
<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
<1.0
<1.0
<1.0
5
<1.0
<1.0
2
<1.0
<1.0
<1.0
<1.0
<1.0
<1.0
<1.0
<1.0
<1.0
<5.0
<5.0
<5.0
802
380
728
<1.0
<1.0
<1.0
<1.0
<1.0
<1.0
<1.0
<1.0
<1.0
52.0
28.0
43
854
408
778
NA
NA
NA
NA
NA
NA
NA
NA
NA
NA
NA
NA
NA 1 2.8 1 NA
NA NA NA
Monitoring Report /Table 12.xls / Phase 1 Wells Page 4 of 5 Revised: 11/28/01

Table 12
Pre- and Post - Pilot Test Injection Groundwater Data Summary - Pilot Test Area
W.P. Ballard and Downgradient Properties
Greensboro, North Carolina
WELL ID:
BMW-2
SAMPLE DATE:
3/23/00
6/22/00
9/7/ 00
10/18/00
3/8/01
8/22/01
EPA 601/602 Compounds: (ug/L)
NCAC 2L
Benzene
1
<1.0
<1.0
<1.0
<1000
NA
<1.0
1,2 Dichlorobenzene
620
<1.0
<1.0
<1.0
<1000
<1.0
<1.0
1,3 Dichlorobenzene
620
<1.0
<1.0
<1.0
<1000
<1.0
<1.0
Ethylbenzene
29
<1.0
<1.0
<1.0
<1000
NA
<1.0
Toluene
1,000
3.1
4.5
<1.0
<1000
NA
1.9
m,p-Xylenes
530
<1.0
<1.0
<1.0
<1000
NA
<1.0
o-Xylenes
530
1.1
<1.0
<1.0
<1000
NA
<1.0
Bromoform
0.19
<1.0
<1.0
<2.0
<1000
<1.0
<1.0
Bromomethane
None
<1.0
<1.0
<1.0
<1000
<1.0
<1.0
Carbon Tetrachloride
0.3
<1.0
<1.0
<1.0
<1000
<1.0
<1.0
Chloroform
0.19
<1.0
<1.0
<1.0
<1000
<1.0
<1.0
Chloromethane
None
<1.0
<1.0
<1.0
<1000
<1.0
<1.0
Vinyl Chloride
0.015
<1.0
<1.0
<1.0
<1000
<1.0
<1.0
Dibromochloromethane
0.41
<1.0
16.5
<1.0
<1000
8
8
Ethylene Dibromide
0.0004
<1.0
<1.0
<1.0
<1000
<1.0
<1.0
1,1-Dichloroethane
700
<1.0
<1.0
<1.0
<1000
1
1
1,2-Dichloroethane
0.38
<1.0
<1.0
<1.0
<1000
<1.0
<1.0
1,1-Dichloroethene
7
19.7
21.0
<1.0
<1000-
21
45
cis-1,2-Dichloroethene
70
<1.0
<1.0
<1.0
<1000
<50
13,100
trans-1,2-Dichloroethene
70
4.9
<1.0
<1.0
<1000
8
8
1,2-Dichloropropane
0.56
<1.0
<1.0
<1.0
<1000
<1.0
<1.0
cis-1,3-Dichloropropene
<1.0
<1.0
<1.0
<1000
<1.0
<1.0
trans-1,3-Dichloropropene
0.2
<1.0
<1.0
<1.0
<1000
<1.0
<1.0
Methylene Chloride
5
<1.0
<5.0
<5.0
<5000
<5.0
<5.0
Tetrachloroethene
0.7
110,000
90,500
45,700
53,500
33,200
30,400
1,1,1-Trichloroethane
200
4.1
<1.0
<1.0
<1000
4
4
1,1,2-Trichloroethane
None
<1.0
<1.0
<1.0
<1000
-<1.0
<1.0
1,1,2,2-Tetrachchloroethane
0.17
<1.0
<1.0
<1.0
<1000
<1.0
<1.0
Trichloroethene
2.8
70.1
38.3
<1.0
<1000
440
2,300
TOTAL°VOCs
110,103
90,580
45,700
53,500
33,682
-45 868
Metals: (mg/L)
Iron
300
0.105
0.100
NA
NA
NA
NA
Ferrous Iron
None
<0.100
<0.100
NA
NA
NA
NA
Manganese
50
0.031
0.017
NA
NA
NA
NA
Ferric Iron
None
0.105
0.100
NA
NA
NA
NA
Miscellaneous Chemistry: (mg/L)
Chloride
250
NA
NA
NA
2.7
NA
NA
Chemical Oxygen Demand
None
NA
NA
NA
NA
NA
NA
Percent Reduction (VOCs)
18%
58%
51%
69%
58%
Percent Reduction PCE)
18°/
58°/
51 °/
70%
72°/
0 0 0 0 o I
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 4124100
Monitoring Report frable 12.)ds / Phase 1 Wells Page 5 of 5 Revised: 11/28/01

TABLE 13
Phase I - In Situ Chemical Oxidation
Shallow Groundwater Wells Preliminary Results Summary
W. P. Ballard and Downgradient Properties
Greensboro, North Carolina
Analyte
NCAC 2L
. MW-12
MW-15
MW-17
MW-18
MW-22
LMP-1
LMP-2
3/7/01
8/21 /01
3/7/01
8/21 /01
3/7/01
8/21 /01
3/7/01
8/21 /01
3/7/01
8/20/01
3/7/01
8/21 /01
3/7/01
8/21 /01
Methylene Chloride (ug/L)
5.0
<5.0
<5
<5.0
<50
<5.0
<50
<5.0
<50
<5.0
<250
<5.0
<50
<5.0
<1.0
Chloroform (ug/L)
0.19
<1.0
<1
17
25
4
55
1
<50
2
<50
<1.0
11
<1.0
1.7
Chloromethane (ug/L)
none
<1.0
<1
<1.0
<10
<1.0
<50
<1.0
<50
<1.0
<50
<1.0
<10
<1.0
<1.0
Carbon Tetrachloride (ug/L)
0.3
<1.0
<1
7
<10
17
<50
<1.0
<50
5
<50
<1.0
<10
<1.0
<1.0
1,1-Dichloroethane (ug/L)
700
<1.0
<1
<1.0
<10
<1.0
<50
2
<50
<1.0
<50
<1.0
<10
<1.0
<1.0
1,2-Dichloroethane (ug/L)
0.38
<1.0
<1
<1.0
<10
<1.0
<50
<1.0
<50
<1.0
<50
1
<10
<1.0
<1.0
1,1-Dichloroethene (ug/L)
7.0
<1.0
<1
<1.0
<10
2
<50
<1.0
<50
<1.0
<50
<1.0
<10
<1.0
<1.0
cis-1,2-Dichloroethene (ug/L)
70
1
5.2
24
22
160
165
27
<50
85
<50
11
65
10
13.8
trans-1,2-Dichloroethene (ug/L)
70
<1.0
<1
<1.0
<10
2
<50
<1.0
<50
4
<50
1
<10
<1.0
<1.0
1,2-Dichloropropane (ug/L)
0.56
94
60
<1.0
<10
<1.0
<50
<1.0
<50
<1.0
<50
830
595
382
250
Trichloroethene (ug/L)
2.8
9
5.2
404
345
1330
555
1,060
<50
355
180
33
67
12
6.9
Tetrachloroethene (ug/L)
1
<1.0
7.7
30
11
4,770
2,340
2,200
940
2,040
1,790
215
81
86
51.8
1,1,2,2-Tetrachloroethane (ug/L)
none
7
<1
<1.0
<10
<1.0
<50
<1.0
<50
<1.0
<50
<1.0
<10
<1.0
<1.0
1,1,1-Trichloroethane (ug/L)
200
<1.0
<1
<1.0
<10
<1.0
<50
<1.0
<50
<1.0
<50
<1.0
<10
<1.0
<1.0
1,1,2-Trichloroethane (ug/L)
none
<1.0
<1
<1.0
<10
1 2
<50
2
<50
<1.0
<50
<1.0
<10
<1.0
<1.0
Total VOCs Detected (ug/L)
1.11
78
482
403
6,287
3,115
3,292
940
2.491
1,970
1,091
819
490
324
Percent Reduction (VOCs)
Percent Reduction (PCE)
=
77
30%
NA
16%
63%
50%
51%
71%
57%
f_
21%
12%
4
b
25%
62%
34%
40%
Tables 13 & 14.xis Pagel of 1 Revised: 11/28/01

TABLE 14
Phase I - In situ Chemical Oxidation
Deep Groundwater Wells Preliminary Results Summary
W. P. Ballard and Downgradient Properties
Greensboro, North Carolina
DMP-1
DMP-3
DMP-4
Analyte
NCAC 2L
DW-7
DW-8
DW-13
3/7/01
8/21/01
3/8/01
8/21/01
3/7/01
8/21/01
3/7/01
8/23/01
3/7/01
8/21/01
3/6/01
8/21/01
Bromoform (ug/L)
0.19
4
<1 M
<5
<1.0
<50
<1.0
<10
<1.0
<500
<1.0
<5
<1.0
<5000
1,2-Dichlorobenzene (ug/L)
none
<170
<5
<1.0
<50
<1.0
<10
6
<500
<1.0
<5
<1.0
<5000
1.3-Dichlorobenzene (ug/L)
none
<10
<5
<1.0
<50
<1.0
<10
<1.0
<500
<1.0
<5
<1.0
<5000
Methylene Chloride (ug/L)
5.0
<50
<25
<5.0
<250
<5.0
<10
<1.0
<2500
<5.0
<25
<5.0
<25000
Chloroform (Ug/L)
0.19
<l 0
<5
12
<50
<1.0
<10
<1.0
<500
<1.0
<5
10
<5000
Chloromethane (ug/L)
none
<10
<5
<1.0
<50
<1.0
<10
<1.0
<500
<1.0
<5
<1.0
<5000
Carbon Tetrachloride (ug/L)
0.3
<1'0
<5
20
<50
1
<10
<1.0
<500
<1.0
<5
18
<5000
1,1-Dichloroethane (ug/L)
700
<1F0
k
<5
<1.0
<50
<1.0
<10
<1.0
<500
<1.0
<5
<1.0
<5000
1,2-Dichloroethane (ug/L)
0.38
<10
<5
3
<50
<1.0
<10
11
<500
<1.0
<5
<1.0
<5000
Vinyl chloride (ug/L)
0.015
<110
<5
<1.0
<50
<1.0
<10
2
<500
<1.0
<5
<1.0
<5000
i
1,1-Dichloroethene (ug/L)
7.0
<10
<5
<1.0
<50
<1.0
<10
4
<500
<1.0
<5
<1.0
<5000
r
-
cis- 1,2-Dichloroethene (ug/L)
70
<1+.0
<5
320
<50
20
<10
2280
<500
9
<5
350
<5000
trans- 1,2-Dichloroethene (ug/L)
70
<1}.0
<5
1
<50
<1.0
<10
10
<500
<1.0
<5
30
<5000
1,2-Dichloropropane (ug/L)
0.56
7
<5
<1.0
<50
<1.0
<10
17
<500
<1.0
<5
<1.0
<5000
Trichloroethene (ug/L)
2.8
2
<5
645
<50
89
32
320
<500
55
21.5
1250
<5000
Tetrachloroethene (ug/L)
0.7
240
226
1340
1,100
860
447
190
<500
289
144
2940
<5000
1,1,1-Trichloroethane (ug/L)
200
<1+.0
<5
<1.0
<50
<1.0
<10
<1.0
<500
<1.0
<5
<1.0
<5000
1,1,2-Trichloroethane ug/L)
none
<11.0
<5
2
<50
<1.0
<10
<1.0
<500
<1.0
<5
2
<5000
Total VOCs ug/L
-:
249
226
2,243
1,100
960
479
2,840
0
353
166
4,600
0
Percent Reduction (VOCs)
9%
51%
50%
;' `°
100%
53%
100%
Percent Reduction (PCE)
6%
18%
47%
100%
50%
100%
Tables 13 & 14.xls Page 1 of 1 Revised: 11/28/01

TABLE 15
Cumulative Mass Removal Via Groundwater Extraction
W.P. Ballard and Downgradient Properties
Greensboro, North Carolina
IT Corporation of North Carolina Project 107535
Date
Cumulative
Groundwater
Recovered
(gallons)u
Influent Concentrations (WSP-1)
Mass Removed / Period
Cummulative Mass Removal
Trichloroethene
WI-
Tetrachloroethene
u /L
Trichloroethene
Ibs
Tetrachloroethene
Ibs
Trichloroethene
Ibs
Total
Tetrachloroethene
Ibs
3/28/01
68,527
490
1200
0.280
0.280
0.280
0.280
4/26/01
154,178
<50
1600
0.000
1.144
0.280
1.424
5/11/01
230,456
540
1300
0.344
0.827
0.624
2.251
6/14/01
465,638
3300
5000
6.476
9.812
7.100
12.063
7/19/01
1,046,704
1400
1200
6.788
5.818
13.888
17.882
8/23/01
2,011,623
1100
2600
8.857
20.934
22.745
38.816
9/6/01
1 2,209,832
1100
6800
1.819
11.247
24.564
1 50.063
Note:
The formula used to calculate mass removed per month is:
(Gallons Removed During Period) x (Influent Concentration) x (1 Ib/ 453.6 g) x (1 g/ 10 a ug) x (3.785 U 1 gal)
Tables 15 & 16.x1s

TABLE 16
NPDES Permit Compliance Monitoring Summary
W.P. Ballard and Downgradlent Properties
Greensboro, North Carolina
IT Corporation of North Carolina Project 107535
Effluent Constituent
Units
Daily Maximum
Limit
2001 Monthly
NPDES Sampling Results8LISP-4
March
April
May
June
July
August
September
3/28/01
4/26/01
5/11101
5/31/2001 R
6/14/01
6/25/01
7/19/01
7/23/01
8113/01
8/13101
8120/01
8/23/01
9/6/01
9/17/01
Total Suspended Solids
mg/L
30.0
92
15.
180
20
41
16
26
Oil and Grease
mg/L
14
<5.0
<5.0
<5.0
<5.0
<5.0
<5.0
11
<5.0
Lead
mg/L
0.049
0.0077
<0.005
0.017
0.067
0.0065
<0.0030
0.0035
Iron
mg/L
12
1A
44
3A
6.3
0.96
4.1
0.69
Manganese
mg/L
0.71
1.2
0.66
0.38
0.18
0.041
0.098
0.033
Benzene
µg/L
71.4
<5.0
<5.0
<5.0
<5.0
<5.0
<5.0
<5.0
<5.0
Toluene
µg/L
11.0
<5.0
<5.0
<5.0
<5.0
<5.0
<5.0
<5.0
<5.0
Carbon tetrachloride
µg/L
4.4
<5.0
<5.0
<5.0
<5.0
<5.0
<5.0
<5.0
<5.0
1,1-Dichlorcethene
µg/L
3.2
<5.0
<5.0
<5.0
<5.0
<5.0
<5.0
<5.0
<5.0
1,2-Dichloropropane
µg/L
39.0
<5.0
<5.0
<5.0
<5.0
<5.0
<5.0
<5.0
<5.0
Trichloroethene
µg/L
81.0
<5.0
<5.0
<5.0
<5.0
<5.0
<5.0
<5.0
<5.0
Tetrachloroethene
µg/L
8.85
<5.0
<5.0
<5.0
<5.0
<5.0
<5.0
<5.0
<5.0
1,1,2-Tdchloroethane
µg/L
42.0
<5.0
<5.0
<5.0
<5.0
<5.0
<5.0
<5.0
<5.0
Vinyl chloride
µg/L
-
<5.0
<5.0
<5.0
<5.0
<5.0
<5.0
M
<5.0
<5.0
Ethylbenzene
µg/L
-
<5.0
<5.0
<5.0
<5.0
<5.0
<5.0
a
<5.0
<5.0
m&p-Xylene
µg/L
<10.0
<10.0
<10.0
<10.0
<10.0
<10.0
<10.0
<10.0
o-Xylene
µg/L
<5.0
<5.0
<5.0
<5.0
<5.0
<5.0
r
<5.0
<5.0
1,2-Dichloroethane
µg/L
<5.0
<5.0
<5.0
<5.0
<5.0
<5.0
1
<5.0
<5.0
1,2-Dichlorobenzene
µg/L
<5.0
<5.0
<5.0
<5.0
<5.0
<5.0
t
<5.0
<5.0
1,3-Dichlorobenzene
µg/L
<5.0
<5.0
<5.0 '
<5.0
<5.0
P
<5.0
P
P
e
P
<5.0
<5.0
P
Methylene chloride
µg/L
<5.0
<5.0
<5.0
<5.0
<5.0
a
<5,0
a
a
c
a
<5.0
<5.0
a
Chloroform
µg/L
18
17
19
9.8
<5.0
c
<5,0
c
c
h
c
<5.0
<5.0
c
1,2-Dibromoethane
µg/L
<5.0
<5.0
<5.0
<5.0
<5.0
a
<5.0
e
e
a
<5.0
<5.0
e
1,1-Dichioroethane
µg/L
<5.0
<5.0
<5.0
<5.0
<5.0
<5.0
1
<5.0
<5.0
cis-1,2-Dichlorcethene
µg/L
<5.0
<5.0
<5.0
<5.0
<5.0
A
<5.0
A
A
n
A
<5.0
<5.0
A
trans-1,2-Dichloroethene
µg/L
<5.0
<5.0
<5.0
<5.0
<5.0
n
<5.0
n
n
c
n
<5.0
<5.0
Naphthalene
µg/L
<5.0
<5.0
<5.0
<5.0
<5.0
a
<5.0
a
a
<5.0
<5.0
n
1,1,2,2-Tetrachloroethane
µg/L
_
<5.0
<5.0
<5.0
<5.0
<5.0
1
<5.0
I
I
a
<5.0
<5.0
a
1,1,1-Tdchloroethane
µg/L
<5.0
<5.0
<5.0
<5.0
<5.0
<5,0
(
I
<5.0
<5.0
1
1,3,5-Trimethylbenzene
µg/L
<5.0
<5.0
<5.0
<5.0
<5.0
y
<50
.<5.0
y
y
S
y
<5.0
<5.0
y
1,2,4-Tdmethylbenzene
µg/L
<5.0
<5.0
<5.0
<5.0
<5.0
t
t
t
P
t
<5.0
<5.0
t
Bromoform
µglL
<5.0
<5.0
<5.0
<5.0
<5.0
1
<5.0
I
I
L
I
<5.0
<5.0
Methyl-tert-butyl ether
µg/L
<5.0
<5.0
<5.0
<5.0
<5.0
c
<5.0
c
c
I
c
<5.0
<5.0
c
Nitrogen, Kjeldahl, Total
mg/L
0.15
0.16
5.2
<0.10
<0.10
a
<0.10
a
a
T
a
<0.10
<0.10
a
Nitrate -Nitrite (as N)
mg/L
<0.30
<0.30
<0.30
<0.30
0.59
1
<0.30
1
1
)
1
<0.30
0.35
1
Chronic Toxicity - PASS/FAIL
FAIL
FAIL
Chronic Toxicity - Chronic Value
(P) c P...-I-1
I %
1 190
1
<45
76.5
61.2
1
<45
Tables 15 & 16.x1s

TABLE 17
Cumulative Mass Removal Via Vapor Extraction
W.P. Ballard and Downgradtont Properties
Greensboro, North Carolina
Influent Concentration (ASP-2)
Mass Removal Rates
Cummalitve Mass
Removal
Days of
System
System
cis4,2-
cis4.2-
cis-1,2-
Date
Operallon
Temperature
Flow Rate
Dlchloroethens
Trichlorosthene
Tetrachi thane
THC-Gas
Dlchloroethens
Tdchlorosthens
Tatrachloroetheno
TRC-Gas
Dichloroethens
Trichloroethene
Tetrachlorostitans
THc-Gas
(' Rankine)
(cfm)
(ppm-v)
(ppm-v)
(ppm-v)
(ppmar)
(ibs/day)
(lbsrday)
(lbs/dsy)
(lbs/day)
(lbs)
(Ibs)
(Ibs)
(Ibs)
328/01
3
570
588
0.39
0.33
2.4
7.4
0.08
0.09
0.81
1.56
0.23
0.28
2.42
4.69
426/01
4.5
590
334
1.2
0.68
20
26
0.13
0.10
3.70
3.03
0.81
0.71
19.05
18.32
5/11/01
5
652
837
1.0
0.5
46
18
0.29
0.20
22.78
4.99
2.26
1.69
132.98
4325
8114101
18
SSD
883
<0.15
<0.15
0.88
2.3
0.00
0.00
0.35
0.59
2.28
1.69
136.21
52.07
726101
32
5e8
610
<0.28
<0.26
2.2
<2.6
0.00
0.00
0.78
0.00
2.26
1.89
163.02
52.07
8/23/01
21 1
588
B10
<023
<0.23
<0.23
<2.3
0.00
0.00
0.00
0.00
2.26
1.69
163.02
52.07
816101
10
556
1010
0.1
02
23
3.0
0.03
0.09
13.65
1.12
2.58
2.63
299.49
63.28
Note: Molecular Weight Values:
Molecular Weight
Analyte
(IbObmole)
cis-1,2-Dichloroethene
98.94
' Trichloroethene
131.38
Tetrachloroethene
165.82
THC - Gas
104.40
The formula used to calculate emission rates is:
Mass Removal Rate (N / day) - mw(P/RT)(q)(B)(C/D)
where: mw - molecular weight of contaminant (ib/Ibmoie)
P= atmospheric pressure (1 aim)
R = universal gas constant (0.7310 ft''atmnbmole-R)
T - temperature (degrees Rankine)
q = system flow rate (cfm)
B - conversion factor (1440 min/day)
C = concentration of hydrocarbons (ppmv)
D - total volume (1 E+06)
Tables 17 6 18.rds
Temperature Conversion (Fahrenheft to Rankine)
Rankine- Degrees Fahrenheit + 460
Air Flow Rate Calculation
q = M(A)
q - Air Flow Rate (cfm)
V = Air Velocity - measured (fpm)
A o Cross Sectional Area of Pipe (n•r')
r -Pipe Radius

TABLE 18
OH -Gas Effluent Air Permit Compliance Monitoring
W.P. Ballard and Downgradlent Properties
Greensboro, North Carolina
Effluent Concentration (ASP-3)
Days of
Effluent
Effluent
System
Temperature
Flow Rate
Carbon
Hydrogen
Data
Operation
ASP-3
ASP-3
Ben-
Tatrachlorlds
Chloroform
Chloride
Methylene Chloride
Tatrechloroethone
Vinyl Chloride
° Rankine
(clm)
(p b-v
b-v
")
(P by)
(ppb-v)
(pp")
( b-v)
328/01
3
570
586
<0.13
-0.13
-0.13
- NA
-0.13
0.17
-0.13
426/01
4.5
590
334
<0.58
<0,56
<0.64
NA
2.2
5.3
-0.67
5/11/01
5
1 552
837
0.59
<0.56
<0.64
NA
<0.67
5.3
<0.67
0/14101
15
550
683
<0.14
<0.14
<0.14
NA
<0.14
98
<0.14
726I01
32
5W
610
<0.14
-0.14
<0.14
NA
<0.14
<0.14
-0.14
823101
21
566
610
<0.14
NA
<0.14
NA
<0.14
<0.14
<0.14
916I01
10
556
1010
7.30
<0.58
-0.66
NA
-0.69
5
-0.69
Note:
Analyte
Molecular Weight
(1bAb-mole)
Benzene
78.12
Carbon Tetrachloride
153.81
Chloroform
119.37
Hydrogen Chloride
36,46
Methylene Chloride
84.93
Tetrachloroethene
185.82
Vinyl Chloride
US
The formulas used to calculate emission rates are:
Mass Removal Rate is I day) = mw(P/RT)(OHB)(CID)
where: race= molecular weight of contaminant(lbMmole)
P = atmospheric pressure (1 atm)
R = universal gas constant (0.7310 ils•abnAb-mole-R)
T = temperature (degrees Rankine)
O = system flow rate (cfm)
B = conversion factor (1440 miNday)
C = concentration of hydrocarbons (ppmv)
D = total volume (1E+09)
Mess Removal Rate (# I hour) = mw(PIRTXQXBHC/D)
where: mw = molecular weight of contaminant (lb/Ibmole)
P = atmospheric pressure (1 atm)
R = universal gas constant (0.7310 as'atMlRrtale-R)
T = temperature (degrees Rankine)
O = system flow rate (chn)
B = conversion factor (60 min/hour)
C = concentration of hydrocarbons (ppmv)
D = total volume (1 E•09)
Temperature Conversion (Fahrenheit to Rankine)
° Rankine = ° Fahrenheit • 460
Air Flow Rate Calculation
D = (VXA)
O = Alf Flow Rate (chn)
V = Air Velocity - measured (fpm)
A = Cross Sectional Area of Pipe (x•�)
r = Pipe Radius
Tables 17 8 18.xis Page 1 of 2 Revised: Tables 17 a 18.xh

TABLE 18 (Continueco
Off -Gas Effluent Air Permit Compliance Monitoring
W.P. Ballard and Dow ipadient Properties
Greensboro. North Carolina
Mass Remcnral Hato
Cummalalrs Mass Emmlaslons for 2001
Carbon
Carbon
Dab
Benzene
TetrachlorideHChlomfbm
Hydrogen Chloride
Mothylme Chloride
Tetrachlorodhens
Vinyl Chloride
Boman.
Tetrachloride
Chloroform
Hydrogen Chloride
Mothylons Chloride
Tatrachtorcd bons
Vinyl Chiodds
Ibarhour
Ibafda
Ibslhou
Ibafday)
Ibafday)Ibafda
Ibaido
ibsiday
Ib(Ib.)
Ib.l
IW
Ib•
(Ib32fl101
0.0000
0.0000HA
NA
0.0000
0.0000
0.0001
0.0000
0.0ow
0.0000
0.0000
NA
0.0000
0.0002
0.0000
426io1
0.0000
0.099oNA
NA
0.0002
0.0000
0.0010
O.00DO
0.000O
0.0000
0.0000
NA
0.0009-
0.0048
0.0000
5f11i01
O.0001
0.0000NA
NA
0.0000
0.0000
0.0020
0.000D
0.0007
0.0000
0.0000
NA
0.0009
MOM
0.0000
6114101
0.0000
0.0000
.
NA
NA
0.0000
0.0000
0.0389
O.G000
0.0007
0.0000
0.0000
NA
0.0008
0.601a
O.0000
728101
0.0000
0.0000
0.0000
NA
NA
0.0000
0.0000
0.0000
0.0007
0.0000
0.0000
NA
0.0009
0.601a
0.0000
023lO7
0.0000
0.0000
NA
NA
0.0000
0.0000
0.0000
0•�7
O.W00
0.0000
NA
0.0009
O.a0fa
0.0000
9=1
0.0020
0.0000
0.0000
NA
NA
0.0000
0.0000
0.0030
�Ed
0.0211
0.0000
0.0000
NA
0.0009
0.a315
0.0000
Compound (CAS Number)
Carcinogens
I ear
Accute Systemic Toxbant
Ibfhour
Accute Irritants
Ib/hr
Benzene 7743-2
8.1
Carbon Tetmchloride 56-235
460
Chloroform 67585
290
d n CAbride 7647-01-00
0.18
Mefh na Chloride 74-87-3
1,600
0.38
Tetrochloroethem, 127,184
13000
Vinyl Chloride 75-0144
26
Tablas 17 a 18.x1s Page 2 of 2 Revised: Tobias 17 a 18.xh