DEQ-CFW_00046026

Hazardous Waste Section
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Hamraws vlaslo simr;op update,;(, lclovwlo F,;io rMP'vr.Va,1 LK-600�
DEQ-CFW-00046026

E
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1) In September 2005, Dexter Matthews, who is Director of the NC Division of Waste
Management (DWM), indicated in a letter to Michael E. Johnson that C-8 releases to
groundwater and soil at the Fayetteville Works would be addressed under a RCRA permit issued
by DWM. In a similar letter, DENR's Assistant Secretary for Planning and Policy, Robin W.
Smith, communicated this information to the C8 Working Group. Copies of the letters are
attached to these comments.
Response
Comment noted.
Section 2.3.3
2) The work plan indicates that the concentrations of bromoform and dibromochloromethane in
groundwater samples collected at monitoring well MW- I I exceeded the NC 2L Groundwater
Standards for these compounds. DuPont did not discuss (a) the constituents' fate and transport,
(b) their horizontal and vertical extent in groundwater, or (c) the possibility of a source for the
compounds other than SWMU 9. The HWS believes the concerns mentioned in this comment
should be addressed in the work plan.
Response
During the Phase III RFI, an attempt will be made to confirm the detections qfbromofarin and
dibroinochloromethane inUIV-11 and to delineate theirpotential extent by sampling nearby
monitoring wells MIV-2S and MIV-9S and installing and sampling temporary lvellpoints to the
south and southwest o 'MIV-11 (if perched ispresent). Confirmation sampling is
.f f,r
necessary because these contpouittl,,iwere onI detected once in 2005 at low concentrations
s.
Section 2.3.3 of the work plan (pages 20 - 21) and the corresponding STVIVIU Prioritization
ff"orksheet (Appendix A) have been updated to reflect this chan,-c% Once the current
concentrations and extent of these compounds in groundwater have been deterinined, a
discussion of the constituents' fate and transport, the horizontal and vertical extent in
groundwater, and the possibilitysource
of soui or the compounds other than SWMU 9 will be
0 provided as part qfthe Final RF1 Report.
- -- ---------------
DEQ-CFW-00046027

0 Section 3.1.1
Existing Information and Identified SC M Data Gaps
3) Mounding of the water table caused by SWMUs 21 A & B (River Water Sediment Retention
Basins) is a major influence on the transport of contaminated groundwater at the DuPont -
Fayetteville site. Eventually these basins will be taken out of service, and the groundwater
system will return to steady-state conditions. DuPont -Fayetteville should predict the fate and
transport of hazardous waste and/or hazardous constituents in groundwater as the transient
stresses imposed on the aquifer system by the basins are removed.
Response
As NCDENR has noted, once SIVYWIT21A & B basins have been taken out of service, there will
no longer be a major source qfwater infiltrating into the subsurface and creating a mound of
perched water on top of the subsur,/ace clay lens. As the perched mound dissipates, the only
source of
*infiltrating water will be rain, which will create a more subdued perched zone both in
areal extent and thickness. Perched water that is not evaporated or transpired will slowly flow
through the sand1vilt overk)7ing, the clay lens, with the perched -one water table mimicking the top
of clay contour (as depicted in work -plan Figure 6). Groundwater constituents will be
transported with the perched water in a westerly direction (as they currently are in the region
west of the basins) as indicatedkr the perched zonepotentionietric surface depicted in workplan
Figure 77. If any groundwater constituents east of the basins currently discharge to the eastern
bluff slope, once the basins are taken out of service, there will no longer be a hydraulic gradient
to the east and discharge to the bluff slope should cease. Additional discussion will he provided
as part of the Final R FI Report.
•
MOM
Complete the Investigation of TPH at the Site
4) Groundwater samples collected for the purpose of determining TPH impacts should be
analyzed for hydrocarbons by the Massachusetts (MADEP) methods. The samples should also,
as proposed in the work plan, also be analyzed for specific TPH-related constituents.
Response
Groundwater samples collected.lor the purpose ref determining TPII impacts will be analyzedJor
hydrocarbons by the Massachusetts Department of Environmental protection (MADEP) method
(as well asfor specific TPH-related constituents). Section 3.4 (pages 33 - 34) and Table 2 o0he
work plait have been updated accordingly.
Section 3.5
Conduct Site -Wide Groundwater Monitoring
5) A table that summarizes SWMU-specific and site -wide groundwater constituents of concern
(COCs) should be added to the work plan.
Response
Table 3, which summarizes SWIIU-specific and site -wide groundwater COCs, has been created
and is refe
renced in Section 3.5 of the work plan (page 34).
DEQ-CFW-00046028

0 Section 4.1
E
Field Investigation Methodologies
6) DuPont should discuss Stage I investigations in more detail. Information such as the most
likely geophysical techniques to be used in a specific area and the placement of geophysical
surveys (locations and number of lines or grids) should be discussed, even if the proposed tasks
are tentative. Once details of the Stage I investigation are finalized, DuPont should communicate
this information to the HWS before field operations begin.
F
Section 4.1 qI'the work plan (pages 36 - 37 and page 42) has been updated to include additional
information about the field investigation methodologies that intly be employed during Stage I of
the Phase III RFI to collect data needed to meet the stated Phase III Stage I objectives.
As part qf'the overall RTIfield activities, a geophysical subcontractor will be selected to pedin-in
aiiinitial geophysical safety investigation atthe Site. The initial investigation will use ground -
penetrating radar and electromagnetic induction survey techniques. While at the site./or the
initial geophysical safel ty investigation, the selected subcontractor will evaluate site conditions
and determine which of the iwrious, geophysical investigation techniques discussed in the work
plan may have the ability to provide adequate data to meet the required Phase III Stage I
objectives. During this initial site visit, the subcontractor int(j, also conduct a sinall-scale, survey
using one or more of the possible techniques and will perform a detailed review of'existing site
lithologic data. The subcontractor will then determine, based on the initial small-scale survey
results, site -specific conditions, and previous cwperience, which geophysical survey techniques
inightproi,ide usef
ul If it is determined that no geophysical investigation technique will
provide adequate data to meet the Stage I objectives, then alternative intrusive techniques (as
described in the work plan) will be employed (e.g., drill rx4,, Geoprobe*), CPT).
The decision about which field investigation methodologies will be employed during Stage I of
the Phase Ill RFI will be made in conjunction with NCDENT and will be based on the
determination of'the methods that will provide adequate data to meet the Phase Ill objectives.
SpecUic details about the selected method(s) will be communicated to NCDEIVR,for review and
approval prior to implementation offiFeldwork, along with the basis for selecting the chosen
inethod(s). This information will also be included, along with investigation results, in the
technical memorandum that will be prepared and submitted to NCDEJVR upon completion qf
Stage I of the Phase Ill R Fl.
A new Figure II has been created that depicts specific areas where all attempt will be made to
use geophysical investigation techniques to determine the presence, extent, and thickness ess of the
clay lens and ivlietlierperched water ispresent. The nitnthei-(if'layout lines shown on Figure 11
is onto an estimate; the final number and location will be based on resultsfromthe preliminary
screening performed during the initial geophysical safety investigation. T here is no specific
e g-wphysical technique that is more likely to be used than another, in fact, more than one
geophysical technique (as described in the work -plan) will likely be employed along the same
layout lines to provide as much information as possible.
A new Figure 12 has been created that depicts specific areas where an attempt will be made to
use invasive investigation techniques (if necessaij) to determine the presence, extent, and
thickness ol'the clay lens, as well as whether perched water is present. The areas are coincident
with the proposed .,,,eopliysicallayout lines. The final locations and areal extents will be based on
results from the initial geophysical safety investigation (which will identify underground utilities)
DEQ-CFW-00046029

E
and on the presence of'other above -ground hazards. The work plan has also been revised to
reference the new figures.
k1f Ntv�NTTIMW
Soil Sampling Methodology
7) Soil samples that will be analyzed for volatile organic compounds (VOCs) should not be
homogenized during collection. Samples that have been mixed or homogenized may exhibit
decreased concentrations of volatile compounds and as a result, may not be representative of the
impacts to soil. The recommended method of sample collection is with a small coring tool (for
example, an Encore sampler), but any method that efficiently transfers the soil sample to a
laboratory -supplied collection bottle is acceptable.
Response
The text in Section 4.2.5 (page 46) has been changed to reflect the use of an EnCore* (or
equivalent sampling device) for sampling for the presence of volatile organic compounds in soil.
Section 6.3.2
Waste Management Plan
8) As with any corrective action activity that generates significant quantities of waste, the HWS
would like to receive a copy of the site -specific waste management plan before remedial
activities are implemented.
Response
A copy qf the current site-speczfic Waste Management Plan (TV11p) is attached to this document.
However, because the IVMP may need to be updated to reflect any changes in anticipated waste
management procedures, DuPont will resubmit the WVP prior to implementation of any initial
field activities where waste will be produced.
DEQ-CFW-00046030

U
Project -Specific Waste Management Plan
for Groundwater, Surface -Water, and
Sediment Sampling
DuPont Fayetteville Works
Fayetteville, North Carolina
Date: 1 10 Project 18985791.508772
URS Corporation
CorporateIron Hill Center
r19713
DEQ-CFW 00046031

LJ
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Project -Specific Waste Management Plan for Groundwater,
Surface -Water, and Sediment Sampling Table of Contents
1.0 Description of Activities ............................................................................................. I
2.0 Waste Characterization and Handling ........................................................................ 2
2.1 Applicability of Listed Codes ............................................................................ 2
2.2 Determination of RCRA Characteristic Codes .................................................. 2
2.3 Waste Management and Characterization .........................................................2
3.0 Spill Reporting Procedures ......................................................................................... 3
3.1 Contact Names and Phone Numbers .................................................................. 3
3.2 Reporting Requirements .................................................................................... 3
3.2.1 Reporting Requirements — Federal Regulations ...................................4
3.2.2 Reporting Requirements — State of North Carolina .............................4
4.0 Waste Storage and Documentation Requirements ...................................................... 5
4.1 Containerization and Labeling Instructions .......................................................5
4.2 Waste Container Inventory Procedures ............................................................. 5
4.3 Container Storage Time Limits and Inspection Requirements ..........................5
Tables
Table I DuPont Fayetteville Groundwater, Surface -Water, Sediment, and Public
Water Supply Well Sampling Project Team Responsibilities
Table 2 DuPont Fayetteville Groundwater, Surface-Watei, and Sediment Sampling
Anticipated Waste Streams
Figures
Figure I Sampling Location Groundwater, Surface -Water, and Piezometer Map
Appendices
Appendix A Sample Container Label for Purge Water
Appendix B Sample Field Documentation Form and Weekly Container Inspection
Form
Fayetteville PSWMP GW-SW-Sediment Sampling_Final
Newark, DE
DEQ-CFW-00046032

11
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11
Project -Specific Waste Management Plan for Groundwater,
Surface -Water, and Sediment Sampling Description of Activities
This project -specific waste management plan and classification document covers the
activities associated with ongoing groundwater well monitoring, sediment sampling,
surface -water sampling, and public water supply well sampling at DuPont Fayetteville
Works in Fayetteville, North Carolina.
The E.I. du Pont de Nernours and Company (DuPont) Corporate Remediation Group
(CRG) anticipates the following site activities to be conducted by its contractors (see
Table I for a list of project team responsibilities):
• Sample up to 30 on -site groundwater monitoring wells using low flow techniques.
• Conduct surface -water and sediment sampling at on -site and off -site locations.
• Monitor water levels at several piezometer locations on -site.
Figure I illustrates all sampling locations included in this monitoring program.
Fayetteville PSWMP GW-SW-Sediment Sampling_Final
Newark, DE
-- DEQ-CFW 00046033

Project -Specific Waste Management Plan for Groundwater,
Surface -Water, and Sediment Sampling Waste Characterization and Handling
The applicability of federal waste listing codes for waste environmental media (e.g., soil,
sediments, groundwater) resulting from site remedial activities is not clearly defined
under the Federal Resource Conservation and Recovery Act (RCRA) regulations. Soil,
sediments, and groundwater derived from investigations or other field activities are
"inherently non -waste like" and are by definition not solid wastes. However, the United
States Environmental Protection Agency (EPA) "contained -in" interpretation insists that
management of contaminated media be classified as hazardous waste if it contains or has
come in contact with a federally identified listed waste.
The compounds monitored under this program are not derived from listed waste sources.
Therefore, all media and debris generated will not contain a listed hazardous waste.
Investigation -derived media [soil, protective personal equipment (PPE), or water] that
does not contain RCRA listed waste(s) may be classified as hazardous if it exhibits a
hazardous characteristic(s). The four hazardous characteristics defined by RCRA are as
follows:
0 Ignitable (D001)
0 Corrosive (D002)
0 Reactive (D003)
301MEMEMUM
The potential application of RCRA hazardous characteristics to waste generated during
activities will be based on historical groundwater results and generator knowledge of
sampling procedures. Several years of monitoring have occurred under this program. All
recovered groundwater, disposable tubing, and PPE will be RCRA non -regulated solid
waste for management and disposal.
Timo t Me,
Anticipated waste streams from the ongoing monitoring and sampling activities are as
follows:
0 RCRA non -regulated wastewater from groundwater sampling
0 RCRA non -regulated PPE and disposable equipment from groundwater sampling
• RCRA non -regulated PPE and disposable equipment from surface -water and/or
sediment sampling
A summary of waste management instructions for each anticipated waste stream is
provided in Table 2.
Fayetteville PSWMP GW-SW-Sediment Sampling_Final 2
Newark, DE
DEQ-CFW-00046034

Project-:Spec€€ic'Waate Managemer3i Ran for Gfo-undvbatar. �� C)t��tt Procedures
Surface -Water, r,nd Se&nen, Sar .tin
..,:m��:w:.:..
"l'liese procedures have been written expressly to cover the field activities to be conducted
by DuPont. or its designated subcontractors, at .DuPont Fayetteville Works, located its
Fayetteville., North. Carolina.
Release reporting and response will take place in a manner protective of human health
r and the en.v-ironrtent and will ccniply with all applicable laws and regulations, as well as
DuPont standards and policy, The provisions of this plan must be carried out ini_nie .iately
whenever there is a tire, an explosion, or a liazardo-us substance release that could
threaten human health or the environment,
Internal DuPont and CRG Reporting
In the event that: a release occurs, the contacts in the table below wil l be inacle as
appropriate,
>;;<
>€
Mike Johnson
DUCCsM
Fayetteville Plant
(Site EnvironmentalManager)
676-11 a5
704-558-4403
Tracy Ovbe
(office)Parsons
Charlotte
(Parsers Project Manager)
704- 93-8146
(mobile)
Jamie Vary Buskirk
Charlotte -- DuPont
704-362-66 6
(DuPont CRIS Protect Director)
Steve Shoemaker
Charlotte -- DuPont
704-362-6633
(DuPont C G Business Team Leader)
Tracy Ovbev wil.l make the appropriate
reporting within the CRG orgar ization.
Agency Reporting
Mike ;lohnson shall notitv the agencies in the table below, as necessary,
All environmental releases shall be reported i.1-nine liately to the Site Envirronniental
Manager, Mil e Johnson, and internal DuPont CRG and contractor contact,,as liste€l.
above. Reporting requirements .-for hazardous substances and the quantity released of a
given chemical vary in type i.e.., air, water, or surface releases).
€ ayrteviile PSWUP GMSVV-Sediment 5arnpling_Fina1
Newar�, DE
DEQ-CFW 00046035

Prolect-Specific WaVe Management Ran for Groundwater,
Suflace-16ater, and Sediment Swnolina—
In the event that personnel safety and,"or release containment is required, take appropriate
action to safeguard human health and the environment.
Should a release occur of any other hazardous substance onto the ground, surface water,
or air, it should be appropriately reported. Notification to the Site En-vironi-nental
Manager. Mike Johnson, and internal DuPont CRG and contractor contacts must occur in
a timely manner to ensure that no %gency reporting is required, Other hazardous
substances include.. but are not lin-fited to, the following.
* Gasoline
® Diesel Fuel
0 Any Oil (e.&, Nlotor Oil, Lubricating Oil)
The table below shows the reportable quantities for the constituents anticipated (either
used or present in the media to be sampled or handled) during the field activities.
The North Carolina Code that pertains to spill andi,"or release re tying, requires
unmediate reporting ofany releases that exceed the reportable quantities cited in the table
below or an-v rcleasc.s that contact surface -water bodies of the State of North Carolina,
Reportable Quantities (RO) for Anticipated Constituents
P W
IEEE]'
Now
WNW: 011-1--11
Petroleum products
Cannot cause a 40 CFR 110 CWA
Petroleum product spills to
(fuels, hydraulic
sheen on the
the ground must be
fluids)
surface of the water
reported to Mike Johnson.
Cannot violate
applicable water
quality standards
Cannot cause a
sludge or emulsion
to be deposited
beneath the
surface of the water
or upon the
adioininq shoreline
---------------
Fayetteville PSWMP GVV-SVV-Sediment
Newark, DE
Cl
DEQ-CFW-00046036

DEQ-CFW 00046037

!r:

11
DEQ-CFW 00046039

Poje l-S.pecificVvaste Management Ran fofGroundwater.
Sur#ace:-Wade , and Sediment Sam ling Appendix a
»
11.565m: mlyms.
FayetteWi e Pik,V3M V -SVI-SC'CajmeFtt .S. •'.ililp in Final A-1
Wilmington, D
DEQ-CFW 00046040

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Sample• Documentation Fa '` • Weekly Container
Inspection Form
DEQ-CFW 00046041

Project -Specific Waste Management Plan for Groundwater,
Surface -Water, and Sediment Sampling Appendix B
Waste Management Field Documentation Form
INSTRUCTIONS: Every project's Field Team Leader is to submit this form to their Waste Managemen�
GENERAL INFORMATION: Field Event Date(s):
CRGProjeo No.: Project
Site Name: Project Name:
Site Address:
Site EPA |DNo:
Task Name:
Field Teem
URSWaste Consultant:
*Site Environmental Coordinator orcontact
(°Orphansites will not have anon-site cnntact.)
Wastes Requiring Characterization and/or Disposal
Assistance by URS Waste Consultant
INSTRUCTIONS: This page must be completed to notify the URS Waste Consultant of wastes needing
Fayexev|lepSvwwp aamplinQ_pmal
Wilmington, DE
MK

1-40
PHASE III RCRA FACILITY
INVESTIGATION WORK PLAN (REV. 1)
DUPONT FAYETTEVILLE WORKS SITE
RCRA PERMIT NO. NCD047368642-Rl
March 1, 2010
Revised April 5, 2011
wp=•,
E. I. du Pont de Nemours and Company
Corporate Remediation Group
6324 Fairview Road
Charlotte, NC 28210
lvd,
a I "
121VIGNONSMUMI -
WOUMM0311111019
DuPont PN 504639
DEQ-CFW-00046044

PHASE III RCRA FACILITY INVESTIGATION WORK PLAN (REV. 1) PROFESSIONAL SIGNATURES AND SEALS
SIGNATURESPROFESSIONAL L
Professional Geologist
Professional Geologist Geologist License number Expiration date
Marc Harder 1763 6/30/2011
Signature Date
iz, , Y15111
Telephone number FAX number E-mail
[phone] [phone] [e-mail]
DOCUMENT:
�- a .�� ..
DEQ-CFW 00046045

PHASE III RCRA FACILITY INVESTIGATION WORK PLAN (REV. 1)
E
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C,
1.0 INTRODUCTION ................................................................................................... 1
1.1 Site Background ................................................................................................ 1
1.1.1 Plant Site Operations ................................................................................ 1
1.1.2 Regulatory History .................................................................................... 2
1.2 Corrective Action ............................................................................................... 3
1.2.1 RFI Approach ........................................................................................... 3
1.2.2 Phase III RFI Goal and Objectives ............................................................3
2.0 CURRENT SITE CONCEPTUAL MODEL .............................................................
5
2.1
Physical Setting .................................................................................................
5
2.1.1 Regional Physical Setting .........................................................................
5
2.1.2 Local Physical Setting ..............................................................................
6
2.2
Risk -Based Prioritization Process ....................................................................
8
2.2.1 Initial Risk -Based Prioritization Process and Results ................................8
2.2.2 Current Risk -Based Re -Prioritization Process and Results .....................10
2.3
SWMU and AOC Summaries ...........................................................................
12
2.3.1 SWMU 6 — Common Sump ....................................................................
13
2.3.2 SWMU 7 — Storm Sewer System ............................................................17
2.3.3 SWMU 9A & B — Former Wastewater Treatment Lagoons .....................19
2.3.4 SWMU 16 — Borrow Pit (Construction Debris Disposal Area) .................21
2.3.5 AOC C — Former Ag Products Gasoline/Diesel LIST Area ......................21
2.3.6 AOC E — Butacite@ Ethylene Glycol Release Area .................................22
2.3.7 AOC G — Former Fire Training Area .......................................................23
2.3.8 AOC GW — Site -Wide Groundwater ........................................................25
3.0 INVESTIGATION
APPROACH ............................................................................
28
3.1
Objective 1: Further Characterize Site Hydrogeologic Conditions ..............28
3.1.1 Existing Information and Identified SCM Data Gaps ...............................29
3.1.2 Investigation Methodology ......................................................................
29
3.2
Objective 2: Conduct Ethylene Glycol Release Investigation ......................31
3.3
Objective 3: Complete the APFO Investigation .............................................32
3.4
Objective 4: Complete the Investigation of TPH at the Site ..........................33
3.5
Objective 5: Conduct Site -Wide Groundwater Monitoring ............................34
DEQ-CFW-00046046

PHASE III RCRAFACILITY INVESTIGATION WORK PLAN (REv1)
4.0 FIELD INVESTIGATION PLAN ...........................................................................
36
-�� 4.1 Field Investigation Methodologies .................................................................
36
4.1.1 Geophysical Investigation Techniques ...................................................
3O
4.1.2 Other Investigation Techniques ..............................................................
41
4.1.3 Monitoring Well Installation .....................................................................
42
4.2 Sampling and Analysis Plan ...........................................................................
43
4.2.1 General Field Procedures .......................................................................
48
4`22 Calibration OfField Equipment ---------------------.44
4.2.8 Decontamination DfField Equipment ......................................................
44
4.2.4 Groundwater Sampling Methodology ......................................................
45
4.2.5 Soil Sampling Methodology ----------------------'40
4.2.0 Analytical Methods .................................................................................
47
4.2.7 Sample Handling and Custody Procedures ............................................
47
4.2.8 Quality Control Checks ...........................................................................
48
5.0 DATA MANAGEMENT PLAN .............................................................................
50
5.1 Data Record .....................................................................................................
50
51.1 Field Sampling Records .........................................................................
5Q
5].2 Unique Sample
Code .............................................................................
51
5.2 Data Evaluation ................................................................................................
51
5.21 Groundwater,Soil and Surface Water ....................................................
51
�
5.3 Data Presentation .............'..............'......'........................................................
52
5.31 Data Presentation Objectives .................................................................
52
5.3.2 Tabular Displays ----------------------------.
52
5.3.3 Graphical Displays .................................................................................
52
6.0 PROJECT MANAGEMENT PLAN ,__,~,,~,,~,,~,,~,,~,,~,,~,,~,,~,.~,,~,,,,,,,,,,,,,,,,~,,~,,____,54
6.1 Personnel ......................................................................................................... 54
6.2 Project Schedule .............................................................................................. 55
6.3 Support Plans .................................................................................................. 55
8.3] Health and Safety Plan ........................................................................... 5O
6.3.2 Waste Management Pkan-----------------------.. 50
6.4 Project Reporting............................................................................................. 57
7~0 REFERENCES .................................................................................................... 58

PHASE III RCRA FACILITY INVESTIGATION WORK PLAN (REV. 1)
Figure 1
Site Location Map
Figure 2
Site Layout Map
Figure 3
Sampling Location GW, SW, and PZ Map
Figure 4
North -South Cross Section Map (A -A')
Figure 5
Northwest -Southeast Cross Section Map (B-B')
Figure 6
Top of Clay Contour Map
Figure 7
Perched Zone Potentiometric Surface Map
Figure 8
Glycol Underground Pipe Location Map
Figure 9
SWMU Location Map
Figure 10
TPH Soil Sample Location Map
Figure 11
Proposed Geophysical Line Locations
Figure 12
Proposed Areas of Intrusive Investigation
Table 1 Historical TPH Detections in Soil
Table 2 Groundwater Sampling Analytes and Methods
Table 3 Summary of SWMU-Specific Constituents of Concerr
Appendix A
Risk -Based Prioritization System Data
Appendix B
Historical Groundwater and Soil Sampling Detections
Appendix C
Former UST Removal Correspondence
E
DEQ-CFW-00046048

PHASE III RCRA FACILITY INVESTIGATION WORK PLAN (REV. 1)
Z21=
E
AWQC
Ambient water quality criteria
bgs
Below ground surface
CA
Corrective action
- ------- ---
CPT
- -- -------
Cone penetrometer testing
CMS
Corrective Measures Study
COC
Constituent of concern
COD
--------- ---- -- I -- - - -- ----------
Chemical oxygen demand
CS
Confirmatory sampling
-- -------- - --- -
DDR
i DuPont In -House Data Review
DMP
Data management plan
- ---------- ------ - -- - -------- ------ --------- --------- ----- ------
DRO
Diesel range organics
- - --------- -
DuPont
----------
E. I. du Pont de Nemours and Company
DWIVI
Division of Waste Management
EM
Electromagnetic
ESV
Ecological screening values
-------------
FEP
Fluorinated ethylene propylene
---------- -
GPM
__I --,Gallons per minute
GPR
- ------ -- ---
Ground penetrating radar
----------------- --- ------------------- - -- --- - ---
HASP
Health and safety plan
HH&E
Human health and the environment
HSWA
------- -- - -- - --- ----- ---
Hazardous and Solid Waste Amendments
-- ---- ----
ID
------------------- ------
Insufficient data (to make a determination)
— ----- -- -- ---- , - - - --------- - ------
IMAC
Interim maximum allowable concentrations
LOI
Letter of Intent
MADEP
- - --- - ------ - -------- - ---------
-------------- ---- ------ -------------------------------------- -
Massachusetts Department of Environmental Protection
-
MCL
Maximum contaminant levels
MDL
Method detection limit
MG/L
--------------
Milligram per liter
MIP
Membrane interface probe
MNA
Monitored natural attenuation
MS/MSD
Matrix spike/matrrix spike duplicate
rnsl
Mean sea level
- --- - ----- - ----
MW Monitoring well
NC2LS North Carolina 2L Standards
DEQ-CFW-00046049

PHASE III RCRA FACILITY INVESTIGATION WORK PLAN (REV. 1)
---
Acronym Definition / Description
_-_ -_ __� _ _--------- _---------- ____--
NCDENR North Carolina Department of Environmental and Natural Resources
NFA No Further Assessment/Action
— - _ ------
NFI/NCM No Further Investigation and No Corrective Measures
NFI/CM No Further Investigation and Corrective Measures
Ng/m3 Nanogram per meter cubed
------------
------------- _
OSHA Occupational Safety and Health Administration
----- __.__. __ _-.- _---.---__--
PAH ( Polynuclear aromatic hydrocarbon
_ - _.......... - ----------
PD Project Director
----------- ----_ _ --- ----------
PMP Project management plan
ppb Parts per billion
_... _.. _____ i _.. ...._. ..,.... _.... _. _. .-... ._..
PPE Personal orotective enuinmant
DEQ-CFW 00046050

PHASE III RCRAFACILITY INVESTIGATION WORK PLAN (REv 1)
11
W-1 Description
Main Manufacturing Areas
Butacite
Manufactures Butacitee polyvinyl butyral sheeting and polyvinyl butyral resin for
automotive and architectural safety glass.
Manufactures Nafion'�) fluorocarbon membrane for electronic cells and
manufactures fluorocarbon intermediates for Nafion@ membrane, Teflon@ resin,
SentryGlasE)
Manufactures SentryGlas6 Plus structural interlayer for architectural safety glass
Plus
(prev�ious location of now defunct Dymetrol nylon strapping).
manufactured in the APFO area. However, it is not used, nor has it ever been
used, in any of the other manufacturing facilities at the Site.)
Manufactures Polyvinyl Fluoride (PVF) used to produce Tedlar@ film.
Former Ma nufacturing Area
Manufactured Teflon Fluorinated Ethylene Propylene (FEP) for electrical wiring
0-i
insulation and other applications. (Note: This Teflon unit did not use APFO in
its process.) The PMDF unit was permanently shut down in June 2009 and,
-
tT ID.
therefore, no longer manufactures DuPon m Teflon
Support Areas
Produces steam via oil -fired boilers for the facility's manufacturing areas as well
as comfort heating for employees and produces process water and
dernineralized water from raw river water.
Wastewater
Treats process wastewater and sanitary wastewater prior to discharge to the
Treatment
Cape Fear River.
The DuPont Fayetteville Works facility received its initial RCRA Permit (NCD04736864
to operate a hazardous waste container storage area and tanks in February 1983. An
amended Part A application was submitted in 1991 to document upgrades to its
fluorocarbon waste treatment and tank system. The RCRA Part B permit application
submitted in August 1993 identified a total of 71,750 gallons of container storage
capacity at the container storage area. Stored waste included characteristic wastes
In January 1998, the NCDENR reissued the Site's RCRA Part B Permit, which was to
remain in effect for 10 years. Part V of the permit requires DuPont to investigate ,
(through an RFI) potential releases of hazardous substances into the environment as
part of the Hazardous and Solid Waste Amendments (HSWA) Corrective Action
Program. In 2007, DuPont submitted an application for renewal of the Site's RCRA Pa
B Permit, which is currently awaiting NCDENR approval.
Since 1996, several stages of investigation have been conducted at the Site under
NCDENR oversight to meet the conditions of the permit. Reports detailing these
previous investigations have been submitted to NCDENR. The previous investigations
,�-re listed below along with the dates of associated report submittals:
• RCRA Confirmatory Sampling (Supplemental) — June 1999

AprilFormer Fire Training Area Investigation — November 2001
11
Supplemental11
• • 2006
'r
ReportIn addition, DuPont voluntarily agreed to an NCDENR request to conduct an
investigation of potential APFO releases at the Site as part the ongoing RFI, even
though APFO is not a RCRA-regulated hazardous substance. The findings of the APFO
investigation activities conducted during the Phase 11 RFI were included in Appendix A of
the Phase 11 RFI 2006).
e' 1
Corrective action refers to all activities related to the investigation,- • and
cleanup of - of • • or • •I - constituents from• •
waste management units (SWMUs) and/or areas of concern (AOCs) at the Site. DuPont
has established several overall goals for the corrective action activities at the DuPont
Fayetteville Works Facility. These goals are listed below:
Ensure the protection of human health and the environment (HH&E) through
the development and use of an SCM based on a thorough understanding of
site constituents,pathways,• exposure potential;
contaminantm Cost-effectively manage/minimize long-term liabilities associated with potential
- - - • risk -based prioritization • a
m Appropriately comply with all regulatory requirements; and
Coordinate RCRA corrective action activities with other business activities at
the Site to minimize disruption t♦ plant operations, - benefits ♦.
synergies wiother, overlapping environmental initiativ• ensure field
efforts are conducted in a saf@_9,id eftietiViia%, tier.
environmental
The purpose of the RFI is to gather sufficient information to make remedial decisions in
support of the overall corrective action goals. To accomplish this, site -specific data is
collected to determine the nature and extent of releases of hazardous wastes or
hazardous constituents from regulated units, solid waste management units (SWMUs),
and other source areas at the Site. Necessary data is also gathered to support eventual
• i determinations an• a Corrective Measures Study
addition, DuPont integrates the use of risk management into the investigation as an
evaluation tool to prioritize the units for further investigation and remediation.
Establishing priorities using risked -based criteria and a SCM enables the RFI to focus on
• - units, areas, or - pose the potential foradverse effects on
Each investigation phase of the RFI builds upon the previous investigation phase to fill
data gaps within the site conceptual model. Data gaps identified in the SCM are then
used to generate the goals and objectives forthe next phase of - investigation.
The goal of this phase (Phase 111) of the Site RFI is to collect sufficient data to
complete the RFI process an•, to refine the SCM to facilitate the completionof
- - 3
DEQ-CFW 00046053

PHASE III RCRA FACILITY INVESTIGATION WORK PLAN (REV. 1)
fzTeTsurg i O
a final risk assessment that will support an eventual CMS. Additional field
activities will also be conducted during Phase III to address specific NCDENR
questions and/or requests.
■ Based on a review of historical Site data and the current SCM (presented in
Section 2.0), the following specific Phase III RFI objectives were developed to
meet the Phase III RFI Goal:
■ Further characterize Site hydrogeologic conditions;
■ Conduct an investigation of the ethylene glycol release area;
■ Complete the investigation of historical releases at the APFO manufacturing
area (SWMU 7) and of SWMU 16 as a possible source for APFO in
groundwater;
■ Complete the investigation of Total Petroleum Hydrocarbons (TPH) in soil and
groundwater at the Site; and
■ Conduct a comprehensive site -wide round of groundwater sampling.
■ The specific tasks that will be completed to meet these objectives are
described in the following Sections.
U
C]
IM ;J.:l
4
DEQ-CFW 00046054

PHASE III RCRA FACILITY INVESTIGATION WORK PLAN (REV. 1) CURRENT SITE CONCEPTUAL MODEL
LAS 2.0 CURRENT SITE CONCEPTUAL MODEL
W
___D_uf:yo_ntutilizes the site conceptual model (SCM) to develop a representation of the
chemical and physical characteristics of a site in order to focus investigation efforts and
remedial decision making. The SCM also assists in the identification of data gaps, which
can be addressed during future phases of the RFI.
The SCM for the DuPont Fayetteville Site was developed to determine the potential for
each unit (SWMU or AOC) to impact human health and the environment and to identify
existing data gaps. The SCM was based on an analysis of potential exposure pathways,
hazardous substance release constituent concentrations, environmental fate and
transport mechanisms, and risk to human health and the environment. As part of the
SCM, an accurate understanding of the geology and hydrogeology at the Site must also
be known.
The current SCM presented below was developed based on a review of historical data
and the results of the activities conducted at the site during the Phase 11 RFL
1 .15133=
Regional Climate
Relatively mild winters, hot summers and abundant rainfall characterize the climate in
Bladen County. Temperatures range from an average monthly high of 91 OF in July to an
;Amkk i average monthly low of 331F in January. Average rainfall ranges from a monthly high of
5.59 inches in July to a monthly low of 2.97 inches in November.
Fj
Regional Topography
The region surrounding the facility is generally level to gently sloping. However, surface
topography steepens when approaching the Cape Fear River and its tributaries.
9*70 11 OXCM9 reTel 0 LTA F We 9 0 Tj i I i
grained micaceous sand a well as thick lenses of cross -bedded sand. The
portion of the formation may also contain glauconitic, fossiliferous clayey san le es
The Black Creek Formation and surficial deposits are the principal potable wa er
2quifers in the region.
5
DEQ-CFW-00046055

PHASE III RCRA FACILITY INVESTIGATION WORK PLAN (REV. 1) CURRENT SITE CONCEPTUAL MODEL
2.2 Risk -Based • • Process
To efficiently address the data gaps and potential adverse impacts to human health and
the environment identified during the previous phases of the RFI, this SCM presents an
updated risk -based prioritization system (see Appendix A) to "rank" the Corrective Action
(CA) units according to their potential level of concern. Appendix B provides the
historical groundwater, surface water, and soil sampling detections. The prioritization
process uses risk -based criteria and evaluation of the potential for exposure to
constituents in soil,• - f • groundwater t• identify those
areas, or releases that may pose the greatest potential for adverse effects on human
health and the environment. This process in not meant to be a one-time event, but an
on -going, iterative process. In this way, as the RFI proceeds and more information is
gathered, the rankings• •- revised and the investigationpriorities
evaluated and changed as appropriate. If further characterization is determined to be
unnecessary, the units are evaluated for the need for corrective measures.
Use of a prioritization strate• •r• • by the Advanced Notice of Proposed
Rulemaking for CorrectiveAction forRelease from Solid Waste Management
Hazardous Waste Management Facilities (ANPRM;Environmental • •
Agency [USEPA], 1996c). The ANPRIVI promotes the use of risk management concepts
and decision -making to prioritize efforts in order to achieve the objective of protecting
human health • the environment• -
2.2.1 Initial Risk -Based Prioritization Process and Results
risk -based prioritization system was first im•' -• at the Site in 1999 as described
in the Confirmatory Sampling (CS) Report (DuPont CRG, 1999). In the 1999 study,
DuPont integrated the use of risk management• the corrective• process to
prioritize the units for further investigation and remediation. Establishing priorities
enabled • focus on the units, areas, or releasesposed the greatest
po• - effects on • the environment.•
• '! and one potential release area- Training Area) were the focus of the
prioritization process in 1••• as described below.
The initial prioritization process us-• at the Fayetteville site incorporated three general
steps
quantitative comparisonof existing data against health -based screening
levels ! physical/chemical criteria for• explosive hazards
• ' qualitative evaluation of exposure • • • or mitigating factors
the interpretation •" the results of Step
relative• A comparative review of the concerns identified in Steps 1 and 2 to establish
the priority rankings• • the units
In 1999, the first two steps were conducted on potentially releasing units or AOCs for the
following •.
71111111111111
'r- • -- as • .r•
Potential foradverse effects • direct contact
Potential• adverse effects fromreleases groundwat]
•
8
DEQ-CFW 00046058

PHASE III nCRAFACILITY INVESTIGATION WORK PLAN yREV1>

PHASE III RCRA FACILITY INVESTIGATION WORK PLAN (REV. 1) CURRENT SITE CONCEPTUAL MODEL
' were• •--t below- clay layer. Groundwater• - -r
for ethylene glycol by USEPA Method 8015B. Analytical results did not indicate the
presence of ethylene glycol above the laboratory MDL in any of the collected
groundwater sam
No additional investigationhave been • • -• and data gaps still exist in
AOC E. The presence o- clay layer underneathuncertain,• impactsr
soil and groundwater in the imme• - suspected release area are unknown.
Insufficient Data: No data has been collected from the area immediately
surrounding the underground pipe system to detect the presence and extent of
the possible ethylene glycol
Determine the nature and extent of ethylene glycol release (if present)
the area.
` !C G — Former Fire Training Area
The Former Fire Training Area consisted of a 3-foot by 3-foot metal pan that was lo
on the ground and surrounded by a soil and gravel berm. The total bermed area was
approximately 15 feet by 15 feet. Combustible materials (non -process materials) were
placed in the metal pan,and diesel fuel was used to start the combustion process.
Trainees • '• then practice extinguishing - Training Area • -•
• re
moving ♦ • pan and pushing the gravel berms into the interior
training area. Additional details about the historical sampling investigations/activities
that were conducted at AOC G, along with the proposed SWMU prioritization and Pha
III RFI objective, are presented below.
During the 1999 CS investigation, a hand auger was used to advance one soil boring
to 2.5 feet bgs directly below the former locationof the metal pan.
Staining was observed in the surface soils• • - - the metal pan had been
located. The staining was not visible in the underlying soil at a depth of 2.5 feet bgs.
fuel • sn [benzenetoluene,•-lead, TPH (by•r
418.1), DRO (by Method 8015B), and percent moisture]. TPH and TPH-DRO were
detected above PQLs (2400 and 340 mg/kg, respectively) at concentrations of 5600 and
6200 • • respectively.Benzene,ethylbenzene,• r • were
detected above PQLs (.005 mg/kg for BTEX constituents) at concentrations of 0.008,
1 110, 0.0089 and• 1 mg/kg re • -
Area to determine if soilquality had been •. -• as a resultof prior
completed at the Site. Soil samples were collected from the area as part of the 1999
supplemental CS inves•. • • - sample (FIRESCH-1) was collected at the
presumed center (based on historic operation knowledge) at depth intervals of 8.5 to 91
23
DEQ-CFW 00046073

PHASE III RCRA FACILITY INVESTIGATION WORK PLAN (REV. 1) CURRENT SITE CONCEPTUAL MODEL
shallowgroundwater. Lead, chromium and nickeldetected above MDLs
FTA-01, the upgradient well. Chromium and nickel were also detected in the
downgradient wells (FTA-02 and FTA-03). No organic constituents were detected above
MDLs in any of the three wells. The detected concentrations were attributed to naturally
occurring background conditions, and it was recommended that additional groundwater
samples be collected to confirm these results.
nickel.
Based on the recommendations from the Phase I RFI, additional groundwater samples
were collected as part of the Supplemental Phase I RFI in 2003. Samples were
collected from FTA-01 through FTA-03 and sampled for VOCs, PAHs, TPH-DRO, lead,
chromium, and Lead was the only • •.nic constituent detected above - MDL.
however,No other constituents were detected above the MDLs in the groundwater samples;
r for the r-O analyses were slightly elevated • - to the presence
of -a - •
Conclusions
SupplementalThe Phase I RFI •-•• 115) concluded that the lead detected
excavationin the groundwater samples appears to be naturally occurring. No other constituents
were detected above the NC2L groundwater quality standards during the last sampling
event. However, although the majority of impacted soil was removed during the
of - area, a limited area of soil with elevated TPH concentrationsremains
at depth (> 11 feet bgs). Based on previous sampling, it is unlikely that the groundwater
has been impacted by TPH in the soil; however, the MDL for the TPH-DRO analyses
were elevated during the last sampling event due to the presence of sediment in the
samples. As NCDENR representatives requested that occurrences of TPH at the site be
further investigated, confirmation sampling of groundwater from the monitoring wells in
the area is recommended to verify
Insufficient Data: Impacts to groundwater from TPH in soil at AOC G ag
uncert.?i,m.
Confirm the historical TPH-DRO results to support the conclusion that
groundwater in the area has not been impacted by TPH in the soil.
All groundwater sam• • results were evaluated holistically as part of • help
meet the overall RF1 objectives. Although release to groundwater was evaluated as p
of r approach• for making determinations • •
site-widecurrent site conditions at perimeter boundaries and potential exposure points and for
- • • decision making. Additional . details .I•• • • I
investigations that were• • ed at AOC GW, alongthe proposed SWIVIU
prioritization and Phase III RFI objectives, are presented below.
Historical Investigations
A total of 45 groundwater monitoring wells and 26 piezometers have been installed at
the Site during historical investigation efforts. In addition, there are two on -site domestic
is water supply wells that have been used throughout the Site's history to provide potable,
process, and domestic water supplies for facility needs. The two on -site water wells
25
DEQ-CFW 00046075

PHASE III RCRA FACILITY INVESTIGATION WORK PLAN (REV. 1)
have been disconnected • drinking water system but - not been • r
SectionDuring the CS and RFI, groundwater samples have been analyzed for VOCs, SVOCs,
and metals, as well as APFO, methanol, glycols (selected locations only), gas -phase
hydrocarbons, MNA parameters, and water quality parameters. The results of these
sampling events have been presented to NCDENR in the associated reports (as listed in
,11r hen compared to 15A NCAC 2L, NorthCarolina • • •. • Cr'
exceededUSEPA Region IX PRGs for Tap Water, a number of constituents of concern (COCs)
the screening criteria. These included several VOCs,i •
APFO was also detected in several locations across the site.
•MT •
- r •� • • • •- •I• -a - •- -i it - •
migration to the CapeRiver,either through- water ditch or directly
through the lower aquifer. Additionally, the results suggest that there is a decreasing
trend for VOCs (i.e., methylene chloride and tetrachloroethene) in the wells sampled in
the perched and water table units under the Naflone Area. Furthermore, detected metals
are believed to be naturally occurring and not a result of operations at the Site.
Data gaps currently exist with regard to AOC GW. A perched zone and a deeper water
table aquifer present underthe manufacturing.- of - Site, and a clay/clayey silt
layer is present between the two zones. The main perched zone recharge center
appears to be the north/south sediment basins, and the potentiometric surface of the
perched zone indicates radial• - -• in the area of basins.• -
potential unidentified windows may exist in the clay layer in the SWMU 9 area and north
of • p. area. • - groundwater fl• • • the-•- of the • -•
• - is influenced by -topography,but the perimeter of
unknown.layer is addition, table aquifer appears to flow • • .•-
however,Fear River; r •n relating to the potentiometric surface of - water table
aquifer under the developed portion of the Site is limited. Groundwater flow to the north
of the developed area of the Site and the hydraulic relationship between the water table
aquifer • Willis Creek is also unknown.groundwater quality data • • still exists to
southwestthe of is : '
Insufficient Data: The above -mentioned data gaps still exist with regard
A •
•
Conduct an investigation to determine the perimeter of the clay layer present
beneath the Site an• any possible windows that may exist in it.
Further investigate the potentiometric surface of the water table aquifer under
the developed portion of the site, groundwater fl•. • the northof -
developed area of the Site, and the hydraulic relationship between
table aquifer and Willis Creek.
DEQ-CFW 00046076

PHASE III RCRA FACILITY INVESTIGATION WORK PLAN (REV. 1) CURRENT SITE CONCEPTUAL MODEL
E
Conduct a comprehensive site -wide round of groundwater sampling to support
SCM refinement in order to facilitate the completion of a final risk assessment
that will support an eventual CMS.
27
DEQ-CFW-00046077

PHASE III RCRA FACILITY INVESTIGATION WORK PLAN (REV. 1) INVESTIGATION APPROACH
3.0 INVESTIGATION APPROACH
This section presents th- strategy for• • the Phase III RFI SWMUs and a
including the numberand type of samples to be collected and the analytical testing that
will be performed. •- •• • a -• - to be -• during Phase III RFI
the
activities are •'r in Section4.0.
• As presented in Section 1.2.2, five specific Phase III RFI objectives were
developed:
• Further characterize Site hydrogeologic conditions (necessary for investigati
of all required SWMUs/AOCs);
• Conduct an investigation of the ethylene glycol release area (AOC E);
• Complete the investigationof • •
groundwater;
• Complete the investigationof • and groundwater
Conduct a comprehensive site -wide round of groundwater sampling (SWMU 6,
SWMU • a
Certain Phase III RFI objectives must be completed and the data analyzed prior to
implementing the field investigation for other objectives. The Phase III RFI will,
therefore, be implemented in a "staged" approach, as follows:
■ Stage 1 — Further delineate the perimeter of the clay lens in the northern and
western portions of the Site (required to partially meet Objectives 1, 2, 3,
and 5).
■ Stage 2 — (To be initiated after completion of Stage 1) includes
• Perform sampling associated with Objectives 2 and 4;
• Install and sample permanent wells and temporary sample points
associated with Objectives 1, 3 and 5; and
• Collect additional data necessary to complete Objective 1.
Based on - Stage 1 results, • • to better define the Stage 2 activities
evaluation,consultation with NCDENR representatives. Upon completion of the Stage 1 data
• r • ' submitted to NCDENR
presenting
results. The technical memorandum will also propose where sample points will be
installed to fulfill the Stage 2 Objectives.
9"] -1 - M-R 0 M.- TY1 LTA I a Fral Q, - M MoR - I 10 1, M., r
3.1 Objective 1: Further Characterize Site Hydrogeologic Conditions
This section presents the strategy for performing investigations to further characterize
the Site ! •fie• ••iconditions- • complete investigationof
required SWMUs/AOCs) including the overall objectives, potential investigative methods,
DEQ-CFW 00046078

PHASE III RCRA FACILITY INVESTIGATION WORK PLAN (REV. 1) INVESTIGATION APPROACH
and potential number and type of samples to be collected. Existing information relevan)
to identified SCM data gaps is summarized below along with the data gaps.
• A discontinuous clay/clayey silt lens (layer) is present in the subsurface vadose
zone (i.e., unsaturated zone) above the regional aquifer that extends from
approximately 1,000 feet east to 1,800 feet west of the Nafion@ Area, and has
been encountered as far south and north as the perimeter of the existing
manufacturing area (Figure 6 depicts the surface contour of the clay lens that
was constructed with existing si.
• Two separate saturated zones are present under the manufacturing area of the
Site; a variably saturated perched water zone present on top of the clay lens
and a deeper regional water -table aquifer (i.e., unconfined aquifer).
The potentiometric surface of the perched zone (see Figure 7) indicates radial
flow of water centered in the area of the North/South Sediment Basins (which
appear to be the main recharge area for the perched water).
Potential •i(higherpermeability but r aquifer
sands) in the clay lens exist in the SWMU 9 area and north of the Nafion@
Perched water flowalong the -•- of the clay lensinfluenced by -
topography of
m The clay lens outcrops along the bluff adjacentto the Cape Fear River.
m The perimeter of i been determined to the northand west.
Aquifer monitoring are present to the northwest1 to the
northeast1 of ► 0 `' 1 1:: and
• s the river bank.
Groundwater flowto the northof '. developed area of the Site and the
hydraulic relationship between the water table aquifer (and potentially perched
• Willis Creek is unknown.
Delineation of the clay lens will provide an initial determination as to the potential for
perched water to • ' present n• of the is manufacturing area, west of AO C, and
southwestof
focusThe main of objective of _ to refine the SCM by •I - •
data to fill data gaps identified during the Phase 11 RFI pertaining to where groundwater
occurs (both perched and aquifer) and where it flows. To meet this objective the lateral
extent s internal continuityof - clay lenspresent in the vadose zone above
variousgroundwater aquifer (unconfined water table aquifer) must be determined. There are
- • investigative measures that may be used to accomplish this objective;
including advancing soil borings and visually logging the lithologyfrom •' core,
using geophysical interpretive techniques, or advancing CPT probes using the lithology
•Section
DEQ-CFW 00046079

PHASE III RCRA FACILITY INVESTIGATION WORK PLAN (REV. 1) INVESTIGATION APPROACH
Soil cores previously have been collected at the Site using methods such as split -spoon
• -rs with hollow -stem audrilling, • rr- sampler with the Geoprobe@
direct -push techniand ' • augering. There are a numberof geophysical
techniques that have been •_ -• as potentially - determining the extent of
clay lens (both laterally and vertically), the density of subsurface layers (clay vs. silt), and
whether saturated conditions are present, including; ground penetrating radar (GPR),
electromagnetic induction (EM), electrical resistivity, and seismic surveys. CPT can be
"truthed" against prior visual lithologic log(s) and then used where access allows, with no
depth limitationbased on - total depth -of -interest for - Site. Hand augering is only
limited by - depth the augerbe advanced into the ground. - possible methods
that will be used during the Phase III RFI are described in more detail in Section
To better define the potentiometric surface of the regional water -table aquifer, seven
permanent dual -casing monitoring wells will be installed into the upper 15 feet of the
water table aquifer at locations west of the Administration Building, east of the
Wastewater Treatment Plant, near the Sediment Basins, east of the Admin/Lab, east of
SWMU 9, on the south side of the APFO manufacturing area, and east of the APFO
manufacturing area. A figure showing the proposed locations of these wells will be
submitted with the technical memorandum that will be prepared in consultation with
NCDENR representatives upon completion of Stage 1 of the Phase III RFI.
Water levels will be measured in all site wells and piezometers (including newly-
-•i) within a 24-hour period so •- potentiometric mapsbe produced
foboth the perched water zone and the aquifer.possible, the surface water stage in
the Cape Fear River and Willis Creek will also be measured to provide data as to
whether the surface water tributaries are gaining or •r • segments.
To summarize, this objective will be accomplished through
1. Further delineate - perimeter of the clay lens in the northernand western
portions of
'• - • -•• ••-Q
aquifer:2. Better define potentiometric surface of perched water and regional water -table
Install • • monitoring wells into upper 15 feetof - table
manufacturingaquifer at locations east of the Wastewater Treatment Plant (SWMU 8),
near the Sediment Basins, east of the Admin/Lab, east of SWMU 9, on
the south side of the APFO manufacturing area, and east of the APFO
area
ZMM
C Determine if connectionexists between perched water in APFO manufacturirn
area • Willis Creek: 0
Determine presence of - r potential presence of perched
water) as described in the first task
• 30
DEQ-CFW 00046080

PHASE III RCRA FACILITY INVESTIGATION WORK PLAN (REV. 1) INVESTIGATION APPROACH
Determine connection between potential perched water and Willis Creek
during the APFO groundwater quality determination as presented in
Objective 3 (see Section 3.3)
The investigation of the ethylene glycol release area (AOC E) will consist of '
determination of the depth and location of the underground conveyance pipe system,
confirmatory water sampling for ethylene glycol (and equivalent indicator parameters),
and delineation of any potential impact. The depth of the conveyance pipe system alo
the different runs will be determined through review of engineering drawings, review of 1�
the geophysical results used to identify the underground pipe location, and/or potentiall
through visual and/or physical contact with the pipe.
a depth coincident with the bottom of the conveyance pipe. The sampler will visually
inspect the soil for saturated conditions. Saturated conditions would exist where a leak
in a pipe was occurring because the pipe is currently being used to move water for
comfort cooling. An area where water is currently leaking would, therefore, be the
mostly likely area for an ethylene glycol leak to have occurred. If saturated conditions
are encountered (i.e., the boring is close to where a leak is occurring), a sample of the
water from a depth corresponding to the depth of the bottom of the pipe will be collected
and submitted to the analytical laboratory for analysis of ethylene glycol. Because
ethylene glycol is readily biodegradable in the subsurface environment and may no
longer be present at detectable concentrations in the shallow groundwater from the
historical release, e�yuivalent indicator #,arameter r eje_-, chemical o e n d e m a n d f_C_0_Q_-
10 mg/L reporting limit) or total organic carbon (TOC; 1,mg/L reporting limit)] will also be
analyzed in the water sample.
If saturated conditions are encountered at a boring location, two additional borings will
be advanced to the same depth at a distance of 10 feet perpendicular to the pipe on
either side. If saturated conditions are encountered at these borings, water samples will
be collected and analyzed for ethylene glycol and equivalent indicator parameters. A
second 1 0-foot step -out (20-feet out total) and associated sampling will be performed if
saturated conditions are encountered at the first 10-foot step -out. If it is determined that
the clay lens is present in the vicinity, each boring will also be advanced to the top of the
clay layer, and if saturated conditions are still present, a second water sample will be
collected and analyzed for ethylene glycol and equivalent indicator parameters.
Presence of clay lens will be determined during Stage 1 of the Phase III
RFI (see Section 3.1).
Locations along the pipe runs (except where pressure -tested) will be
hand augered to locate any saturated conditions.
In the areas where saturated conditions are observed, water immediately
below pipe and at the top of clay (if present) will be sampled.
OEQ-CFVV_00046081

PHASE III RCRA FACILITY INVESTIGATION WORK PLAN (REV. 1) INVESTIGATION APPROACH
be dependent on safety considerations, including access to the area (both for well
installation and future well sampling), topography, etc. and will be submitted with the
technical memorandum that will be prepared in consultation with NCDENR
representatives upon completion of Stage 1 of the Phase III RFI. The wells will be
installed in the first -encountered saturated zone, either perched water or the aquifer.
Water samples will be collected from the new wells and analyzed for APFO.
To summarize, there will be three main tasks for investigating the APFO manufacturing
area:
1. Determine the presence of APFO in perched water and aquifer groundwater:
0 Presence of clay lens will be determined during Stage 1 of the Phase III
RFI (see Section 3.11).
0 Monitoring wells will be installed in the area, and water perched on the
clay lens will be sampled, if present.
0 Groundwater from the water -table aquifer will be sampled.
2. Determine presence of APFO downwind of the manufacturing area in SWMU 16:
A monitoring well in the Borrow Pit (SWMU 16) downwind of the APFO
manufacturing area (northeast of monitoring well SWM-03) will be
installed in the first encounter of "permanent" groundwater (whether
perched or aquifer) and sampled for APFO.
3. Determine groundwater quality near Willis Creek:
• Monitoring wells in the first encounter of "permanent" groundwater
1101 (whether perched or aquifer) near Willis Creek at locations in -line with
wells SMW-04/04B, SMW-03, and SMW-02/02B will be installed and
sampled for APFO.
Un W-Wff V
UrXwk, C kats yaSollne ana MUM) aUnX9-U—U kati ulebul), arlu 11Idj lld'l,
been introduced to SWMU 6 through the handling of wastewater containing TPH.
Table 1 summarizes the existing TPH data for the four areas, including the depth
intervals over which the soil samples were collected. Figure 10 depicts these sample
locations.
The extent of TPH in SWMU 6 has been adequately delineated in previous
investigations. The focus of the Phase III RFI will, therefore, be on further investigating
the occurrences in SWMU 9A & B, ACIC C and ACIC G. During the Phase III RFI,
groundwater samples will be collected from wells in the vicinity of SWMU 9A is B and
ACC G and will be analyzed for hydrocarbons by the Massachusetts Department of
Environmental Protection (MADEP) method and for TPH-related constituents. In
addition, three soil borings will be advanced at locations/depths that correspond (as
0 closely as possible) to the previously -collected samples in AOC C. Soil samples
1=33
DEQ-CFW-00046083

PHASE III RCRA FACILITY INVESTIGATION WORK PLAN (REV. 1) INVESTIGATION APPROACH
L11
perched water will be determined during the clay layer investigation. If perched water is
determined to be present southwestof : a monitoring well will be installed and
sampled for SWMU 8-specific• - or perched water is notpresent,
therefore,then the potential for past releases from SWMU 8 to have infiltrated down to the aquifer
newly -installed aquifer monitoring well (see Sectionto the
east of SWMU 8 (i.e., the groundwater flow direction in the aquifer) will be sampled for
the list of 8-specific COCs.
To summarize, this objectivebe accomplished through
1. Conduct a comprehensive•- round of groundwater sampling.
2. Develop an expanded groundwater database for the Common Sump release
(part of SWMU 6) including collection of MNA parameters to support a CMS.
PZ-01 through PZ-09 will be abandoned and PZ-04 will be replaced with
permanent monitor
Confirm3. - findings of previous investigations,• -• clay
that the
lens is • present r the southwest of 8 or that there is noperched water
present:
Section• Presence of perched water will be determined during Stage 1 of the
Phase III RFI (see
perched water is present,be sampled for SWMU-specific•
perched water is notpresent,-a aquifer monitoring well
to the east of be sampled for •- •
- 35
DEQ-CFW 00046085

PHASE III RCRA FACILITY INVESTIGATION WORK PLAN (REV. 1) FIELD INVESTIGATION PLAN
L
Figure 11 indicates the specific areas where an attempt may be made to use
geophysical investigation techniques to determine the presence, extent, and thickness of
the clay lens, as well as whether perched water is present. The number of layout lines
shown on Figure 11 is only an estimate; the final number and locations will be based on
the results of the preliminary screening survey performed during the initial geophysical
safety investigation.
There are a number of geophysical techniques that have been identified as potentially
useful in determining the extent of the clay lens (both laterally and vertically), the density
of subsurface layers (clay vs. silt), and whether saturated conditions are present.
■ Ground Penetrating Radar (GPR)
■ Electromagnetic Induction (EM)
■ Electrical Resistivity
■ Seismic Surveys
• Seismic Refraction
• Seismic Reflection
• Crosshole Seismic
The following subsections discuss the different geophysical techniques in detail.
Technical information presented below is primarily fromtwo references; Hager -Richter• - - Inc., website(http://www.hager-richter.com),r • Geophysical•a •
' •(http://www.geo-app.com).
Ground Penetrating Radar
(dielectricfrom interfaces in the path of the signal at which changes in the electrical properties
• of the subsurface materials occur. The signals• -•
processed, • displayed on - field •- addition to being recorded for
potential additional post processing). provides a c• • profile of the
subsurface.
.. is commonly used in conjunctionother geophysical techniques
magnetic, electromagnetic induction, and seismic refraction. GPR uses high -frequency
electromagnetic waves to provide detailed subsurface cross sections.
Microwave
• reflected back to the surface from different
produces various
• Ifletal objects produce the strongest• • for determination of
location, depth and
• GPR can also delineate the boundaries of landfills, excavations, or other are
where there is a distinct material density difference
Higher -frequency antennas (• •Iwl or 0 '• for eys
on concreteslabs,• locate rebar,electrical • • or pipes prior to
•- drilling o•.
37
DEQ-CFW 00046087

PHASE III RCRA FACILITY INVESTIGATION WORK PLAN (REV. 1) FIELD INVESTIGATION PLAN
Electromagnetic Induction
methodThe EM measures the conductivityof buried objects,a
backfill utilizing electromagnetic ina •n. EM (a.k.a., Terrain Conductivity)allows
the .• • collection and interpretation of • quantities of data, • can be used to
detect and locate both metal objects and zones of conductive contamination. It is the
only •'eavailable geophysical techniquesensitive to the presence of both
ferrous and non-ferrous metal objects. EM complements both magnetics and GPR.
EM measures the apparent conductivity of the subsurface, including effects of the soil,
bedrock contaminants,objects,and groundwater. Variations
conductivity may indicate changes in composition, layer thickness, or moisture content,
the presence of buried metal such as drums, or presence of contamination.
Data are acquired at single stations and/or continuously along lines. EM surveys may
not be suitable for examining highly industrialized or urbanized areas where cultural
features such as buildings, pipelines and power - interfere • - •r of
accurate data. • •. • in -phase and quadrature EM data, or • magnetic
contour - • and non-ferrous s• of elevated • • drums
landfillversus be differentiated.
The electrical resistivity method measures the apparent resistivity of the subsurface,
including effects of: soil type, contaminants, and groundwater. Variations in electrical
resistivity may indicate changes in composition, layer thickness or contaminant
concentrations. This method is useful for simultaneously detecting lateral and vertical
changes in subsurface electrical properties. Electrical resistivity is also used to delineat-.
3-dimensional bodies s .'• •
Electrical resistivity surveys may not be suitable for examining highly industrialized or I
urbanized areas where cultural featuresbuildings, - • power
'interfere with the collection of accurate data.
Seismic surveys provide a • about • .•hy, hydrogeology, and bedrock
topography. Crosshole seismic is used to determine shear wave velocity as a function
of depth to help determine geotechnical properties of soil and rock.
Seismic surveys measure the time it takes for -• or -• energy waves
traveling through the subsurface to return to geophones at the surface (or in nearby
boreholes). By analyzing this data, characteristics of subsurface layers such as depth,
s attitude can be determined.
• Determine depth of ♦ re - bedrock
• Determine depth of water table
• Determine overburden thickn
.• bedrock s••• .•
Determine • and soil properties
Determine lithology,and faults
_ 38
DEQ-CFW 00046088

PHASE III RCRA FACILITY INVESTIGATION WORK PLAN (REV. 1)
C
seismic waves, it is sometimes referred to as the primary wave and is usually
more -readily identifiable - • •' • as compared to the other
Refractionseismic waves.
Refraction)
S-wave refraction evaluates the shear wave generated by the seismic source
located at a knowndistance fromthe array. The wave is generated by
horizontally striking an object on ground - to induce
Since the shear wave is the second fastest wave, it is sometimesreferred to as
the secondary wave. When compared to the compressionwave,
wave is approximately one-half (but may vary significantly from this estimate) of
the velocity depending on the medium. Shear waves cannot travel through
liquid media.
MwMay-JiMMM,
Seismic reflection surveys use field equipment similar to seismic refraction, but field and
data processing procedures are em• • -• to maximize the energyreflected along near
signalvertical paths by •. density contrasts._• seismic energy is never
reflectionfirst to arrive and, therefore, must be identified in a generally complex set of overlapping
seismic arrivals. Therefore, the field and processing time for a given lineal footage of
seismic - are much greater than for -refraction.However,
reflection can be performed in the presence of low velocity zonesor velocity inversions,
generally has lateral resolutionsuperior • seismic refraction,and can delineate
very deep density contrasts• •y and shorter geophone line
limitationlengths than would be required for a comparable refraction survey depth.
The main • seismic reflectionpractical limitationto depths generally
greater approximately 50 feet. At depths less than approximately 50 feet,
• •m subsurface density contrasts- at •-•s • es at nearly the same
time as the much higher amplitudeground • s air blast
sound of the shot). Reflections from greater depths arrive at geophones after the ground
roll and air blast have passed, making these deeper targets easier to detect and
Seismic reflection is particularly suited to marine applications (e.g., lakes, rivers, and
oceans) where the inability of water to transmit shear waves makes collection of high
quality reflectiondata possible even • depths that would be •
impossible on •.
The general differences between - refraction r reflection are summarized in t11table below.
_1 40
DEQ-CFW 00046090

PHASE III RCF0\FACILITY INVESTIGATION WORK PLAN (REV 1) FIELD INVESTIGATION PLAN
Refraction
--- - ------------------------------
Reflection
Typical Targets
Near -horizontal density
Horizontal or dipping 4ensity
contrasts at depths less than
contrasts, and laterally restricted
approximately 100 feet
targets at depths greater than
approximately 50 feet
Site Conditions
Access to an area greater than
5-times the depth of interest
(natural ground cover)
Vertical Resolution
10 to 20 % of depth
5 to 10 % of depth
Lateral Resolution
approximately Y2 the geophone
approximately Y2 the geophone
spacing
spacing
Effective Practical
1/5 to 1/4 the maximum shot -to-
greater than 50 feet
Survey Depth
geophone separation
In situations where both could be applied, seismic reflection generally has better
resolution, but is considerably more expensive. In those situations, the choice between
seismic reflection and refraction becomes an economic decision. In other cases (e.g.
very deep/small targets) only reflection can be expected to work. In still other cases,
where boreholes or wells are accessible, neither refraction, nor reflection may be
recommended in favor of seismic tomography.
Crosshole Seismic Surveys
Crosshole Seismic Surveys measure the time for horizontally traveling compressional
(P) and shear (S) waves to travel from a source hole to a receiver hole. Travel times are
used to determine P and S wave velocities, which can be used to compute elastic moduli
(e.g., shear modulus, Young's modulus, Poisson's ration) of the soil or rock strata. This
information is then used to determine the strength and cohesiveness of the strata.
The distance between borings at every measurement elevation must be precisely
determined for subsequent velocity calculations. This is typically accomplished by
performing a borehole deviation survey. The seismic source is placed in the first boring
and the seismic signal travels to a geophone placed at the same elevation in the
receiver hole(s). The time and distance data are analyzed and interpreted to determine
soil properties.
Cone Penetrometer Testing (CPT) consists of a cone attached to a sleeve and push
rods. The cone and sleeve are equipped with electronic strain gauges that measure "tip
resistance" of the cone and "friction" along the sleeve. These electronic readings are
then processed and compared against a library to determine the sedimentary lithology of
the material (e.g., sand, silt, clay, loam, dense, soft, or any intermediate size fraction).
The CPT can also be "truthed" against site -specific conditions by advancing a CPT
adjacent to a previously visually logged soil boring. The cone is hydraulically pushed
into the ground at a fixed rate (typically 2 centimeters per second [cm/sec]) and can
reach depths in excess of 100 feet depending on the density of the sediment.
OEQ-CFVV_00046091

PHASE III RCRA FACILITY INVESTIGATION WORK PLAN (REV. 1) FIELD INVESTIGATION PLAN
11
then be advanced through the outer casing to a depth to be determined in the field. At
the termination depth, diameter polyvinyl chloride "VC) screen connected to
flush joint PVC casing will be installed. The well•- factory slotted with
0.010-inch diameter openings.
A filter pack will be placed around the screened portion of the well. A minimum of two
feet of bentonite will be placed above the filter pack. If the bentonite seal is placed
above the water table, approximately ! gallons of potable water will •- _r♦-• is
hydration purposes. well - be grouted •' s surface to the top ♦' th
bentonite seal. • provide stability• - well casing, the uppermost three feet of • r
below land surface will •- a concrete or cement -type• •
Monitoring wellsgenerally •- completed with locking protective •
pads, and bollards. The bollards be painted yellow to increase visibility. • ever,
locations where site -specific• • • directly - ♦ to business activities, such as
vehicle traffic, would endanger the physical integrityof • .r
completion (completed in such a manner so as to preclude surficial contaminants from
entering the •- installed.
During drilling,• be monitored with an organic vapor•
assessing the presence of volatiles in the soil at each drilling location. Other monitoring
equipment also may be used as required in the site -specific HASP prepared for the
Grout will be allowed to cure for 24 hours in monitoring wells grouted prior to
development. Any preliminary development necessary during monitoring well installation
will take place prior to grouting. Newly -installed monitoring wells will be developed after
construction using bailing, pumping and/or mechanical sur•- block techniques.
After development,-• monitoring wells will be accurately surveyed for
elevation control. Horizontal locations will be determined by direct measurement from
physical locations (i.e., benchmarks) at the facility. To reduce the effects of any
chemical changes caused by formation damage that occurs during any drilling operation,
monitoring wells will not be sampled until at least 24 hours after installation and
development.
4.2 Sampling and Analysis Plan
This section describes the procedures to be used during the investigation field sampling
1 . The Field Team Leader will notify the laboratory of the upcoming sampling event
so that the laboratory can prepare the appropriate type and number of sample
containers. The anticipated number of sampling sites, list of parameters to be
analyzed, and number of sample bottles needed for quality control (QC) testing
shall be specified to the laboratory manager.
2. All equipment to be used during the sampling event will be inspected by the Site
Supervisor.
• 43
DEQ-CFW 00046093

PHASE III RCRA FACILITY INVESTIGATION WORK PLAN (REV. 1) FIELD INVESTIGATION PLAN
3. Field instrumentation to be used during sampling (i.e., pH, temperature, water
level, and specific conductance meters) will be checked to ensure proper
calibration and precision response.
4. All forms to be used in the field (including the field logbook, chain -of -custody
sheets and seals, and sample analysis request forms) will be assembled.
5. New pre -preserved sample containers will be provided by the laboratory, and
shipped to the Site or other designated location in coolers or insulated sample
11 shuttles". All sample containers will be examined by the field sampling team
upon receipt, and containers will be "pre -labeled" during the preliminary phase of
the sampling event to reduce confusion in the field. Sample identification
information (e.g., well number, sample point, sample identification number,
preservative, and analytical parameters) will be pre-printed on sample labels at
the time the empty containers are prepared and shipped to the Site or will be
printed on the bottle label with permanent ink during the pre -field activities. Other
information (e.g., sample time and date, samplers' names, etc.) may be added to
the label after the sample is collected. A cross-reference to the information
contained on the label will be documented in the field logbook to correspond with
the well number or sample location.
6. The field team will review proper sampling protocols for the specific matrices to
be sampled. In addition, proper health and safety protocols will be reviewed prior
to the sampling event.
Calibration of Field Equipment
Calibration of equipment will occur daily prior to its use in the field. The Site Supervisor
49 is responsible for maintaining adherence to the calibration schedule and for ensuring
that the operator understands the proper usage, maintenance, and storage of each
instrument. Calibration information will be recorded in the field logbook and will include:
the date of calibration, the operator's name/initials, the calibration measurements, and
observations about the instrument or calibration procedures (if needed).
All field measurement equipment will be calibrated according to the manufacturers'
recommend guidelines. If any meter exhibits unacceptable error (according to
manufacturer specifications), it will be recalibrated. If after recalibration, the meter still
exhibits unacceptable error, it will be replaced. All field equipment will be supplied and
maintained by a manufacturer -approved supplier.
-M f �, �M I =1
used (electronic water level indicator, submersible pump, etc.) will be thoroughly
decontaminated after use at each location.
• Tap water rinse
• Scrub with tap water containing non -phosphate detergent (i.e. Alconoe)
• Tap water rinse
-IN RUM NO= a
DEQ-CFW-00046094

PHASE III RCmAFACILITY INVESTIGATION WORK PLAN (REV 1)
Disposable equipment such (e.g., bailers, tubing, and soil sampler liners) will not
All drilling equipment (i.e., hollow stem augers, Geoprobeo rods) will be decontaminated
by steam cleaning and/or pressure washing after use at each sample location.
Decontamination activities will be performed over a temporary pad for rinse water
collection. Rinse water from the decontamination activities will be collected, drained into
drums, and labeled for appropriate waste management.
Groundwater samples will be obtained (where possible) using low -flow groundwater
sampling techniques. However, if necessary, conventional well sampling methods (e.g.
three well volume purging) may also be used. The standard procedures to be used for
obtaining groundwater samples are described below.
• Chemically -inert tubing will be placed into the well water column to the midpoint
of the screened interval. This tubing will be connected with flexible Chemically -
inert tubing to a peristaltic pump head.
• Water will then be removed from the well with the peristaltic pump into a
bottom -filling flow through cell that houses the field parameter (pH, temperature
and conductivity) probes.
• The water level in the well will be measured during purging to ensure that
minimum draw -down of the water column in the well is achieved.
n Field parameters will be recorded until stabilization. Field parameter
stabilization is defined as measurements being within 10% over a five-minute
time interval.
• To ensure a representative sample, the water intake position at the midpoint
the screened interval will remain constant throughout the sampling process.
Sampling flow rate will not exceed purging flow rate. I
• Once field parameter stabilization has been achieved, the sample containers
will be filled directly from the pump discharge tubing.
• If the well becomes dry during purging activities, it will be noted in the logbook,
and samples will be collected as quickly as recharge will allow, preferably
within the next 24 hours.
For wells greater than 25 feet deep, the following procedure may be used:
• Chemically inert tubing will be attached to a submersible pump. The
submersible pump will then be placed into the well water column to the
midpoint of the screened interval.
• Water will be pumped from the well into a bottom -filling flow through cell that
houses the field parameter (pH, temperature and conductivity) probes.
• The water level in the well will be measured during purging to ensure that
minimum draw -down of the water column in the well is achieved.
• Field parameters will be recorded until stabilization. Field parameter
10 stabilization is defined as measurements being within 10% over a five-minute
time interval.

PHASE III RCRA FACILITY INVESTIGATION WORK PLAN (REV. 1) FIELD INVESTIGATION PLAN
To ensure a representative• - the water intake position at the midpoint of
the screened interval will remain constant throughout the sampling process.
Sampling flow rate will notexceed purging flow rate.
• Once field parameter stabilizationbeen -• the sample containers
will be filled directly from the pump discharge tubing.
• If the well becomes dry during purging activities,be • f in the logbook,
• samples will be collected as quickly as recharge• . preferably
hours.within the next 24
Unless dedicated, the submersible pump and any other non -disposable
sampling equipment be decontaminated using the procedures outlined in
Section,
• • • - • •- • - -• • • •. •AV4.11• f
disposable bailer will be lowered using new cord/string into the well until the
bailer reaches the bottom.
The bailer will be allowed to fill and then will be removed from the well and
emptied into a waste container.
This will be -•-.e -. well bore volumes havebeen purged from
well or until the well is dry. Field parameters will be collected after each well
volume has been •
Sample • be filled directly frombailer.- well has
rechargebeen purged dry, it will be allowed to recharge before samples are collected.
Wells with a slow recharge will be noted in the log and sampled as quickly as
will allow.
Individual samplealiquots be f - • in the following• •'volatile• •
sernivolatile organics, and inorganics. The analytical laboratory will supply all necessary
sample containers with appropriate preservatives along with shipping containers.
Samples will be shipped in coolers packed with wet ice (if necessary) to ensure that
temperature preservation requirements are met.
Soil samples to be analyzed for VOCs will be collected directly from the sample
collection • - • acetate liner, split-spoon,•auger)• • tool
EnCore@ or equivalent - • • • "` and then capped and/or preserved
appropriate. For all additional parameters, soil from the depth interval to be sampled wil�
be transferred from the collectiondevice to a stainless steel mixing bowl for
homogenization. The homogenized sample will then be transferred to the appropriate
laboratory -supplied sample collection bottles using decontaminated stainless steel
spoons or trowels. Field equipment will consist of some or all of the following:
■ Plastic sheet liners
• Field sampling record and soilboring logs
trowels,• Stainless -steel knife, ••scoops,bowls
All non -disposable sampling equipment will be decontaminated between sample depths
and borehole locations using the procedures outlined in Section 4.2.3.
_ 46
DEQ-CFW 00046096

PHASE III RCRA FACILITY INVESTIGATION WORK PLAN (REV. 1) FIELD INVESTIGATION PLAN
E
' . Analytical Methods
I ne analysis ot soil and groundwater samples will be performed by a North Carolina -
certified laboratory. All laboratories that may be used are under contract to DuPont to
provide - • as such, are routinely• rr and monitored '•
technical performance. Table 2 lists the proposed groundwater sampling target analytes
• analytical methods.
4.2.7 Sample Handling and Custody Procedures
• • r
Samples will •- collected into the laboratory -supplied pre -preserved • - containers
using the procedures outlined in section 4.2.4. Each individual sample container will be
sealed according to laboratory specifications• r Clean disposable
will be worn during the handling of all samples and sampling devices.
- -• • r- .•- • • • r _ s• •• a - • .
The custody of samples collected during the field investigation will be traceable at all
Prior to shipment •' the samples to the laboratory,a •s '•
completed by the field sample custodian.Sample locations,•- identification
numbers, description of samples,•- of samples• - -• and specific laboratory
analyses • be run • : each sample will be recorded on the -r •form. The
-1• • - t• . • • •. - - • •• • t2 g*•
for the project r- • • .•le). The chain -of -custody forms• • possession
of the samplesfrom of collection until disposing or archiving the sample.
sample is considered under custody
• It is in the investigator's view after possession has been established
investigator locks• the sample after possession
Chain -of -custody forms are not required for samples analyzed in the field; however,
custody must be maintainedprior to
Prior to shipment by a registered courier,• :- shipping container (cooler,s•
etc.) will be sealed with signed chain -of -custody forms inside. The authorized laboratory
custodian that receives the samples•n the chain -of -custody forms,
terminating custody of the field sample custodian.
DEQ-CFW 00046097

PHASE III RCRA FACILITY INVESTIGATION WORK PLAN (REV. 1)
A 1:4 q oil Z kyj*] I Ley -A 9
Laboratory Custody Procedures
Sample custody at the analytical laboratory is maintained through systematic sample
control procedures composed of the following items:
• Sample receipt
• Sample log -in
• Sample storage
• Sample archival/disposal
As samples are received by the laboratory, they will be entered into a sample
management system. The following minimum information will be provided:
• Laboratory sample number/identification
• Field sample designation
• List of analyses requested for each sample container
provided upon r quest.
4.2.8 Quality Control Checks
Equipment blanks, m ethod/prepa ration blanks, field duplicates, matrix spike/matrix spike
duplicates (MS/MSD)/replicate (REP) samples, and laboratory control samples (LCSs)
will be analyzed to assess the quality of the data resulting from the field sampling and
analytical programs.
IF 111 1121 11!1111 lJ111111II!1111 ;jj11!11p I 1 11111111 # . 0
UWAMOS 0 9 a 0 a 0
lort MIR *UAIIIIII414U40
Trip blanks will consist of a series of certified -clean sample containers filled with analyt
free water. The trip blanks will be prepared by the laboratory analyzing the samples a
will travel to the Site with the empty sample bottles and back from the Site with the
collected samples in an effort to simulate sample handling conditions. Trip blanks are
not opened in the field. Trip blanks will accompany every shipping container that has
sample bottles specified for volatile analysis. At least one trip blank per cooler will be
I
analyze•for VOCs. d
Equipment Blanks
Equipment blanks (field rinsate blanks) are used to evaluate equipment cleaning or
decontamination procedures. At the sample location, laboratory -supplied analyte-free
water will be poured over or through the clean, non -dedicated sampling equipment,
collected in a sample container, and preserved as appropriate. The equipment blank
samples will then be handled with the other samples and will be analyzed for the same
tj_'I: ��-] , 1 48
DEQ-CFW-00046098

PHASE III RCRA FACILITY INVESTIGATION WORK PLAN (REV. 1) FIELD INVESTIGATION PLAN
11
parameters as other samples collected using the same device. In the event that
dedicated sampling equipment is used at each sampling location, one field blank
consisting of the direct transfer of laboratory -supplied analyte-free water to the sample
containers will be collected for each matrix (aqueous and solid). The maximum
frequency for equipment blanks is one per 20 samples or one per sampling event.
WNW : i r - t: ! r tt
An MS/MSD is a subsample of an investigatory sample to which the laboratory adds a
spike containing analytes at known concentrations prior to extraction/analysis of the
sample to assess the effect of sample matrix on the extraction and analysis
methodology. The MS/MSD pair are subjected to the entire analytical procedure in order
to indicate both accuracy and precision of - method for the matrix by f the
percent recovery and relative percent difference (RPD) of the two spike samples. A
matrix spike and matrix spike duplicate sample (or a laboratory replicate) will be
analyzed by the laboratory once for each sample group (of the same matrix) or at a
minimum of one in every 20 samples analyzed.
the actual field samples. If possible, the QA/QC samples should not be held on site for
more than four calendardays.s- of - blanks,except the trip • .
must be maintained at 40C while on - and during shipment.• blank
methodshipped to the Site on ice, but must be maintained at 40C when accompanying collected
samples. Holding times for individual parameters are dictated by the specific analytical
used.
The quality and integrity of samples collected and analyzed during the investigation will
be monitored by equipment calibration documentation, equipment decontamination
documentation, and the routine preparation of various QA/QC samples. The laboratory
will prepare and analyze the iti+/QC samples specified in the analytical methods
methodsaccording to their in-house Standard Operating Procedures (SOPS).
The • procedures for• r • the .r•r. • RA/QCQA/QC programs are
documented in the laboratory QA Plans, which are available for review upon request.
- _ � 49
DEQ-CFW 00046099

PHASE III RCRA FACILITY INVESTIGATION WORK PLAN (REV. 1)
5.0 . MANAGEMENT .
This Data Management Plan (DMP) presents a program for managing information
acquired during the RFI. The DMP describes procedures for recording the data,
evaluating the data, and displaying the data.
A data record for information collected during the Phase III RFI will be developed to
provide • • --r • to subsequently analyze and assess the results of
fieldwork. Data records will have consistent labeling and recording of field observations
to facilitate future data -• • and analysis and to eliminate the need for speculation
concerning the quality of observations or the influence of environmental factors on an
ultimate result. For each sample or measurement collected as part of the data record,
the following information will be provided:
■ Unique sample number
■ Sampling or field measurement location and sample or measurement type
■ Sampling date
■ Sampling or field measurement raw data
■ Property or component measured
■ Results of analysis (concentration)
■ Detection limit
■ Reporting units
All laboratory data will be provided to the project team in both hard copy standard report
and electronic deliverables. Laboratory data will be reviewed via the DuPont In-house
Data Review (DDR) process. The DDR is an automated internal review process used by
the DuPont Analytical Data Quality Management group to perform a series of checks on
the data order r determine if the data .• - The data -s against hold
assessed.time criteria and checked for blank contamination, and the QA/QC sample results are
IMMMOTOMM,•- • ♦-•NX4• a•a • •i - - ♦ • -• ♦ . •
prevailing conditions during the field investigation.• - • records
reviewed at each site visit, and any unusual site conditions• -r during the fielI
investigation be described • •interpretation. erroneous •. date.
Field •. • • be • • recorded, • s. be
easily interpreted - date. • • - . •conducted, -
following a- • information l berecorded:
0. . il=M
Purpose of a r
Date and time of • •
• ♦.
DEQ-CFW 00046100

PHASE III RCRA FACILITY INVESTIGATION WORK PLAN (REV. 1) DATA MANAGEMENT PLAN
Sampling location description an• • grid coordinates (including photographs,
needed)*
• Sampling method, sample containers,and preservatives use I
Number
Field• Amount of water purged (for groundwater sampling)
• :•• • (prevailing weather conditionsand other•
mightthat - - sample integrity)
Field• measurements conducted*
•• - • `'• •• •115 recorasM11`• • - •FOJeGI2fter each field activity.
MWMUME• •< •
Each sample collected as part of this RFI will be assigned a unique number. The
sample number will indicate the type of sample media and the sampling location. The
sample media will be indicated by the format of the sample name. A SWMU number
and depth interval will be included in the sample name for soil samples. A monitoring
well (MW) number (with no sample depth) will be included for groundwater samples.
For example, the soil sample collected at SWMU 6, Sampling Location Number 1, would
be assigned the following code:
1`
Site Sample Type 1
Designation
Sample Location
Nu•e,
Depth (feet)
AM
•
SelectedIn accordance with current NCDENR guidance, the following screening levels will be
utilized during the evaluation to identify constituents of potential concern (COPCs).
screening levels were based on r use assumptions.-`r. es
of screening levels •• not in themselves• • -• release from a unit or
unavailable.
_ - 51
DEQ-CFW 00046101

PHASE III RCRA FACILITY INVESTIGATION WORK PLAN (REV. 1) DATA MANAGEMENT PLAN
Soil — Soil data will •- compared to USEPA RSLs for residential soil
(unrestricted use). The RSL represents a combined exposure including
inhalation • ♦. and volatile compounds, •- absorption and
ingestion. Constituents that exceeded the residential RSL will also be
compared to the USEPA RSI-s for industrial soil (restricted use) and to •- background •, for inorganics, if available. • concentrations will
• •^ compared to NC target concentrations for the protection • groundwater
(Csoil levels).
Surface Water — Surface water concentrations will be compared to North
Carolina Surface Water Quality Standards (1 5A NCAC 2B) or Federal Ambient
Water Quality Criteria (AWQC; 40 CFR Part 131), where NC 2B Standards
were .• If criteria are not available from either source, then
concentrations will be compared to NC 2L criteria and USEPA Region 4
Ecological Screening Values
RFI •. will be •-• and presented to facilitate interpretation and understanding of
this information as it pertains to the overall •• • the investigation. Typical •
summarize information as it relates to conditions • at the Site. It is anticipated that
raw •. will •e evaluated predominantly through use • the appropriate tables and
screening procedures to evaluate outliers and to produce data summaries. Final data
will be assessed using a variety of summary procedures, including tabular and graphic
•r,
III 1 '1111 • . ■ 0 .
Raw data will be presented and evaluated in tabular form using electronic spreadsheets.
In addition, data will be sorted and evaluated by examination of their relationship to the
Site to determine the presence of outliers or invalid data points. The following will be
presented in tabular displays:
Unsorted (raw) •
Results • each medium • for each • monitored
• Statistical analysis, as appropriate
• Data sorted by potential stratification factors
These displays will • prepared electronically to prevent transcription errors and
facilitate rapid • • information. • raw • have •- screened and the
QC assessment has •-- completed, final tables and displays will •- prepared.
• Displays
Final project data will be displayed, where applicable, using a variety of graphical
♦• to ♦ interpretation and development • a clear understanding • the
sampling locations, areas where more • are needed, and levels of constituents at
each sampling location.
52
DEQ-CFW 00046102

PHASE III RCRA FACILITY INVESTIGATION WORK PLAN (REV. 1) DATA MANAGEMENT PLAN
• information will •e displayed using vertical profiles and cross -sections to
191 allow an • • the change in •. to • • groundwater with depth. This
type of display also will allow an examination of substrata. Hydrogeologic cross -sections
will •- -• as appropriate to evaluate • fully the relationship • groundwater to
potential releases from the Site.
1]
DEQ-CFW-00046103

PHASE III RCRA FACILITY INVESTIGATION WORK PLAN (REV. 1) PROJECT MANAGEMENT PLAN
66.00 PROJECT MANAGEMENT PLAN
his Project ITTIanagement P lan PITIP) has been prepared -by DuPont as part 'of -the
Phase III RFI Work Plan preparation effort for implementation of the RFI at the DuPont
Fayetteville Facility. The PMP contains the following sections:
• Personnel (including roles and responsibilities)
• Project Schedule
• Support Plans
Each project team member identified below will be familiar with the entire RFI Work
Plan. Additional documents (e.g., Waste Management Plan, Health and Safety Plan
[HASP], field notes logbook, sample status logbook) may be developed as part of the
pre -field mobilization effort as needed to ensure that all field activities are completed
safely and effectively.
6.1 Personnel
DuPont has carefully assembled a team of highly qualified professionals for the RFI
project, who possess the knowledge and experience necessary to fulfill the needs of the
DuPont Fayetteville RFI. All senior personnel assigned to the RFI have years of
experience on complex, multi -phased construction, environmental, and remediation
projects.
The principal members of the DuPont project team are:
m Project Director (PD): The duties of the PD are to provide overall project
guidance and to ensure consistency with other DuPont projects and that the
implementation meets the requirements of the Permit.
m Project Manager: The duties of the Project Manager are to schedule and
access project resources; to prepare and ensure compliance with all project
scopes, schedules, and budgets; to provide project scheduling; to oversee and
coordinate the activities of project personnel; and to ensure satisfactory
execution of all project work, as well as to communicate with NCDENR.
m Project Geologist: The Project Geologist will be the primary technical resource
involved in project support and report preparation and will supervise,
coordinate, and assist in the performance of field operations.
Staff Geologist: The Staff Geologist will support report preparation activities,
provide technical and geologic services, and assist in field operations.
Health and Safety Officer: The Health and Safety Officer will be responsible for
preparing the project health and safety plan, reviewing all project health and
safety issues, and ensuring that all project operations are performed in
accordance with the applicable health, safety, and Occupational Safety and
Health Administration (OSHA) regulations and requirements.
54
DEQ-CFW-00046104

PHASE III RCRA FACILITY INVESTIGATION WORK PLAN (REV. 1) PROJECT MANAGEMENT PLAN
Site Supervisor: During RFl field operations, the Site Supervisor will be
designated to oversee field personnel and contractors.
• Field Team Leader: During RFl field operations, a Field Team Leader will be
designated whose responsibilities will include direct supervision of field
sampling operations and transmittal of samples to laboratories.
• Site Safety Officer: During RFl field operations, a Site Safety Officer will be
designated and will be responsible for ensuring that all field operations are
being conducted in accordance with the health and safety plan prepared for the
project.
Contractors: During RFl field operations, it is anticipated that a drill crew and
survey crew will be required. The personnel on these crews will be properly
trained and licensed in North Carolina to perform these duties. All contractors
will be directed by the Site Supervisor.
UUILXMES��
• lei 0 Z 0 0 a •
---------------------------------
Activity
---------------------------------
Duration
- ---------------- - ----- ------ -------- --
Stage ooo 1 Cntractr Selectin and Scheduling Field Planning
—
---------------------------------------------
Eight weeks
- - --------- - -
Stage 1 Field Work (clay lens delineation)
— -- — - - ---------------
Four weeks from NCDENR
approval of selected
i techniques
ra. Evaluation and Technical Memorandum Submittal with
Twelve weeks
NCDENR Consultation
- - ----------- ---- --- -------------------------------
Stage 2 Contractor Selection and Scheduling Field Planning
— - — ---- - ---------------- - -
Twelve weeks from
NCDENR approval of
Technical Memorandum
Stage 2 Field Work (well installations, soil and groundwater
sampling)
Laboratory Analyses/ Data Validation
Data Evaluation, Final Risk Assessment, and Final RFI Report
Twenty-four weeks
Preparation
1P 9
roMiNTH-1 =I- --1-
W-7=0 - •01"Im- i9of I -
(WMP), which will be completed prior to the implementation phase of the IRFI. The
following sections provide a brief description of the content to be included in each
supporting plan.
IN =I-- 55 1
DEQ-CFW-00046105

PHASE III RCRA FACILITY INVESTIGATION WORK PLAN (REV. 1) PROJECT MANAGEMENT PLAN
Prior to commencement of field activities associated with the Phase III RFI, an updated
project -specific Health and Safety Plan (HASP) will be prepared. The purpose of the
HASP is to assign responsibilities, establish personnel protection standards, specify safe
operating procedures, and provide for contingencies that may arise during any of the
field activities that take place as part of the Phase III RFI. The HASP will include
sections pertaining to the following:
• Hazard evaluation
• Worker protection
• Air/workplace monitoring
• Personnel training
• Medical monitoring
• Site control
• Decontamination
• Illumination
• Sanitation
• Emergency contingency plan
The RFI Field Team Leader and Site Safety Officer (SSO) have shared responsibility for
implementing and enforcing the HASP. The SSO will continue to evaluate the HASP for
completeness throughout the course of the field activities and will incorporate changes
necessary as a result of changes in site activities. All proposed revisions to the HASP
will be reviewed by the Regional Health and Safety Manager prior to implementation by
the project team and annotated on a revision checklist provided with the HASP.
All participants involved in the field activities will be briefed on the HASP and afforded
the opportunity to raise any questions. In addition, DuPont and subcontractor personnel
who will be on -site during the RFI will sign the HASP Compliance Form provided in the
HASP. All personnel will be responsible for compliance with the HASP and any other
regulatory requirements set forth by federal and/or state regulations.
6.3.2 Waste Management Plan
Prior to implementation of the Phase III RFI field activities, an updated site -specific
Waste Management Plan (WMP) will be developed. The WMP will establish a system
for managing, documenting, and monitoring the handling, storage, and disposal of
wastes generated during investigation activities. The following types of generated
wastes are anticipated as a result of the outlined activities:
• Personal protective equipment (PPE)
• Decontamination water
• Groundwater from investigation activities
• Soil from investigation activities
During investigation activities, wastes generated at various locations will constitute
wastes of known (process knowledge), unknown, or variable composition. Wastes
generated during the investigation will be characterized to determine disposal options.
DEQ-CFW-00046106

PHASE III RCRA FACILITY INVESTIGATION WORK PLAN (REV. 1) PROJECT MANAGEMENT PLAN
►T water (drill fluids, decontamination water, well purge, and well development
water) will be handled separately from soils and other wastes (PPE and disposable
sampling debris). Drums or tanks may be used for wastewater storage, depending on
the • and similarity •( the Wastes. • will • drummed or stored in roll -off ••
(depending • waste volumes) and accumulated and segregated according :• •
location.
However, if the findings • the • III RFI ••- that additional efforts will •
necessary • complete the RFI, a Phase III RFI Report (which will identify any further
AT&Aa-&i
in place • the Final RFI Report.
The Final RFI Report will include an analysis and summary of all required investigations
of site SWMUs and AOCs and the results of the investigations. The report will also
•- a Final Risk Assessment, which will describe the •- and extent •(
contamination at the Site (including identified sources and mitigation pathways) and will
provide a description • actual or potential receptors. The report will also describe the
extent of contamination in relation to the background levels • the area. In addition, the
Final RF1 Report will identify which units will need to be carried forward into a Corrective
Measures Study. The report will be submitted in accordance with the schedule
is presented in Section 6.2.
E
57
DEQ-CFW-00046107

PHASE III RCRA FACILITY INVESTIGATION WORK PLAN (REV. 1) REFERENCES
7.0 REFERENCES
DuPont CRG. December 1996. RCRA Facility Assessment Report
DuPont CRG.
May 1999a. RCRA Confirmatory Sampling Report
DuPont CRG.
June 1999b. RCRA Confirmatory Sampling (Supplemental) Report
DuPont CRG.
November 2001. Former Fire Training Area Investigation Report.
DuPont CRG.
April 2003. Phase I RFI Report
DuPont CRG.
January 2005. Supplemental Phase I RFI Report.
DuPont CRG.
June 2006. Phase 11 RFI Report.
Leab, Robert J. 1990. Soil Survey of Bladen County. United States Department of
A• Soil Conservation Service.
USEPA. 1996. Advanced Notice of Proposed Rulemaking for Corrective Action for
Release from Solid Waste Management Units at Hazardous Waste •'
Facilities.
58
DEQ-CFW-00046108

El
1_ :izI
DEQ-CFW 00046109

DATE
PARSONS I SR Location Map 01 61,113
------------------. ..........................
Phase lil RCRA Fadity lrivesfigation Work Plan �Rev,l) ---------- P'31 R, ,., . . ......... ...................
DuPont Fayetteville Works
----------
M2 2U,0�i
Fayetteville, North Carolina F.�
$i�ei Loc mix-:1,
DEQ-CFW-000461 10

1

N

Monitoring Well - Type tt Drainage Channel
%3
tax �,.
€ZG
Y,-,
n ^rfibri tine
t5vn#tor#rFII - 7 f tt1
ThrowdJ ; VMter Ditch
to
Cl
Piezorneter River
worm
fxiltt to
CPT Soo Bo
f Boring Pavement'Curb
U
15NIA
Plant Border
` >
vy,1€s`i
1�r°Site
i:7ir�.irtur4.,. ::., ..,.. 'Top o 0,9
F7
Contour Estimated
.zu- _N,
Nott.;i a 13rEt r&?£t
..: 3 •.S'
7.x -..
`�
,t_ f..{2
€ a°sRd c�, t ton of c'€?y e eyati n %a:,36 grou d
£
7
t4$4n4
�ud,,R ,,e el&v23f1w data
e€ -vati m ranv#tE t #Fa €er<i above sea 3evei
2F
m
P ;L i
�aY�r
Map ac,a€f 2ie yr
.3
?�( Yro}e; lion Pdtt� Pisnc Few t# 83
,
Aeria€ Phwograph €3rovi derj by DuPri t, "Aer? 12121005
£ 3
j
NE
<`
C500 1,000
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.....
Q
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t
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:a

... .......
.... .... ...
.... .... ....o
------------------------------------

!1:

1

DEQ-CFW 00046122

Table i
Historical TPH Detections in Soil
Phase Ill RCRA Facility Investigation Work
Plan
(Rev, 1)
DuPont Fayetteville Work
Fayetteville, North Carolina
EEE.2? keiE .
.�'b'. :ly€Yi: yp .ksk.
March 16, 1999
AteC-C
AOC-C-92
10
12
TPH
51
March 10, 1999
AC C-C
AOC-C-03
10
12
TPH-DIESEL
6A (.;(
Marcy 16, 1999
Fire Training Area
FIRESCH-1
f1,5
2.5
TPH
5600
March 16, 1999
Fire Training Area
RRESCH-1 �9
Z
2.5
TPH-DESEL
6206
Juiy 13, 1999
Fire Training Area
FIRESCH-1
8,5
9:5
TPH
16600
.July 13, 1999
Fire Training Area
FIRESCH-1
8,5
9.5
TPH-DIESEL
11000
July 13, 1999
Fire Training Area
FiRESCH-1
9,5
10.5
TPH
210
,SOY 13, 19z3g
Fire Training Area
FIRESCH-1
9,5
13:5
TPH-DIESEL
230
October 27, 1999
Fire Training Area
FRESCH-4
12
-NA
TPH
8660
October 27. 1999
Fire Training Area
FIRESCH-4
12
NA
TPH-DIESEL
9606
October 27, 1999
Fire Training Area
`"IRESCH-5
15
NA
TPH
53
CJetober 27, 1999
Fire Trralninrl Area
? 1RESCH-5
15
NA.
TPH-DIESEL
46
October 27, 1999
Fire Training Area
FIRESCH-5
14
NA
TPH
112
October 27, 1999
Fire Training Area
.
1 ESCH-5 --
12 -
NA
TPH-DJESEL
.w 10
October 27. 1999
Fire Training Area
FIRESCH-6
16
NA
TPH
2600
October 27, 1999
Fire Training Area
:^ iRESCH_6
17
NA
TPH
470
October 27, 1999
Fire Training Area
`"iRESCH-(s
16
NA
TPH-DIESEL
2599
October 27, 1999
Fire Training Area
FiRESt.CH^6
17
NA
TPH-DIESEL
250
October 27, 1999
Fire Trat ijniq krea
FIRESCH-7
18
NA
TPH
71„
October 27.1999
Fire Training Area
FIRESCH-1
18
AAA
TPH-DIESEL
40
October 27, 1999
Fire Training Area
=RESCH-7
19
NA
TPH
1376
CJctober 27, 1999
Fire Training Area
FiRESCH_7
19
NA:
'P PH-�:MSEL
45
t" Bober 27, 1999
Fire Training Area
FIRESCH--7
20
NA
TPH
5996
October 27, 1999
Fire Training Area
...,^ ..,c.6
wlRESCH-7
20
NA
TPH-E E EL
.......,...^�
7100
tbtarcn 9; lggg
Sr°:'1v4U 6
S'�Ji�1Ll6-s3'1
tl �
�: 5
TPH
294
March 15, 1999
Staw mt) 6
SWMt.76-94
45
6, x
TPH
63
Marcia 15, 1999
Slav m U 6
SwN11? J6-05
9
11
TPH
41 (. i)
march 19. 1999
Sys MU 6
5WIVIU6-08
7,5
9.5
TPH
15 p)
March 12, 1999
SvxMU 6
SWNIUG-1G
14
16
TPH
29 [.IJ
9
March 12, 1,3,39
as
S w1U 6
1
S Ar:U6.7
1
12
TPH
:32 p]
March 12, 1999
S�: Mtj 6
S'wV.:Ut-9
10
12
TPH
33 (3i
March 11, 1999
awmU 9
Swt11U9.A-G1
14
16
TPH
42
i9arN>?} 11, 19 �L1Yth,9119
Sl'iv9U9 §-01
9
1€3
TPH
1c lI
March 11,1999
SYL`MU 9
S;P Ml,,.JaA8-02
3
5
TPH
65
March 12, 1999
S MU 9
SWMU9AE-03
13
16
TPH
14 I,1j
March 12, 1999
^1^ MU 9
SCR MU9.AE-G3
3
5
TPH
21 (wij
March 12, 1999
VNVIU9
SY1,mU9AB-03
x
'so
TPH
25IJI'
NotesS
I = Analyte present. Reported value may not be a€:curatn or predse., Should be considered an estimated value
NA = Not Applicable
UC,/ KG = rnicr63,jrar s per #Jioggra E'ri5
DEQ-CFW 00046123

Table
Groundwater Sampling Analytes and Methods
Phase III RFI Work Plan (Rev, .)
DuPont Fayetteville Facility
Fayetteville, NC
,appendix IX VOCs
SW-846 8260B
Acrolein and Acr lonitril
W-846 8260B
Appendix IX SVOCs
Ww 4b 8270C
POA
Laboratory SOP
Methanol
8015B Modified
Petroleum Hydrocarbons
MAD P Methods
Appendix IX Metals
SW-846 6010B
Chloride
MCAWW 300.0
Fluoride
MCAWW 300.0
Note:
SOP = Standard Operating Procedure
MADFP = Massachusetts Department of Environmental Protection
El
1.ofI
DEQ-CFW 00046124

0 0 0
Table 3
Summary of U-Specific Constituents of Concern
Phase III RCRA Facility investigation Work Plan (Rev, 1)
DuPont Fayetteville Works
Fayetteville, North Carolina
...
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0 0 0
Table 3
Summary of S U-SI cIfic Constituents of Concern
Phase III RCRA Facility Investigation Work Plan (Rev. t)
DuPont Fayetteville Wearies
Fayetteville, North Carolina
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2 ¢3f 2

APPENDIX A
RISK -BASED PRIORITIZATION
SYSTEM DATA
-' m
DEQ-CFW 00046127

SWMU I — Hazardous Waste Container Storage Area
Description: SWMU 1 consists of a permitted hazardous waste storage area for containers of hazardous
waste. The area is also used for storage of containers of raw materials, in -process materials, and non-
hazardous solid wastes, This unit is located on the southwest corner of the Nafion ®R Manufacturing Area,
Low. All wastes are segregated and stored in appropriate containers (i.e., 30-gallon plastic drums, 55-gallon
steel drums, 120-gallon steel cylinders or corrugated cardboard packing containers, The storage area itself
is 8925 ft" and is constructed of five -inch thick reinforced concrete. All fiberboard expansion joints are sealed
with neoprene tar on the bottom and one inch of impervious epoxy resistant to acid, bases, and fluorocarbons
on the top, The area is entirely roofed to minimize rainfall on the storage area and minimize sun on the
containers. In addition, a heated ventilated cinder block building is located on the southern 34.5 feet (four to
five rows of the storage area for stora, !,qf,��w materials with melting points above 0"C.
Low, All materials are stored in drums or other appropriate containers,
Low. All materials are stored in drums or other appropriate containers on concrete.
Low. Except for the north fork truck entrance ramp and the south personnel entrance ramp, the concrete pad
is enclosed by a six-inch perimeter curb for containment. The center 14-foot wide access ramp enters into a
high plateau area of the convex pad. The pad slopes both east and west from the high plateau to drain
channels on either side. The drain channels are sloped and connected to a centralized in -ground sump
equipped with a discharge valve and drainpipe. Liquids that might collect in the sump are analyzed and
'un d of off -site.
Low, The ground surface around the pad is graded away from the pad to discourage surface water entering
the area, Surface water runoff from this area flows through drainage ditches to the site's NPDES permitted
effluent outfall.
No Further Investigation/No Corrective Measures.
There is low potential for release and there are no documented releases reported or evidence thereof during
any site inspections. The pad itself is inspected weekly by plant personnel and annually by the NCDENR.
Phase III Activities:
1) Confirm unit location with {3PG.
AprD20ll
OEQ-CFVV_00046128

DUPONT — FAY TTVILL WORKS - W`MU PRIORITIZATION WORKSHEET
WMU 2 A through N -- Hazardous Waste Satellite Accumulation Areas
Description,. The satellite accumulation areas serve as temporary storage units for hazardous waste prior to
shipment to the Hazardous Waste Container Storage Area, There are eleven active accumulation areas at
the Fayetteville Works facility and three, former, inactive units,
Active:
April 1-011
DEQ-CFW 00046129

El
DUPONT — FAYET'TEVILLE WORKS - SWMU PRIORITIZATION WORKSHEET
SWMU 2 A, through N — Hazardous Waste Satellite Accumulation Areas
Description: The satellite accumulation areas serve as temporary storage units for hazardous waste prier to
shipment to the Hazardous Waste Container Storage Area. There are eleven active accumulation areas at
the Fayetteville Works facility and three former, inactive units.
Active:
* SWMU 2C —
Nafion(E) `vinyl Ethers South
* SWIt U 2D
Nafion@ MMF Reactor Room
* SWMt1 2F
Naf:on'J XR Tower
* SWMU 2C —
Olaf€on(R3 PARC
SWMIJ 2H --
Nafion@ Semi -Works
SWMIJ 21 —
Nafion(r) Slue Warehouse
SWMU 2J —
Construction Receiving
* SWMtt 2K —
APFO Laboratory
* SWMU 2L —
Nafion0 E2 Facility
* SWMU 2M —
Wastewater Treatment Laboratory
* SWMU 2N —
Construction Paint Shop
Inactive:
* SWMLI 2A —
Former Construction Paint Shop
* SWMU 2B —
Rutacite(Manufacturing Building
* SWMIJ 2E —
Nafionn Maintenance Sho never operationaf�
.3 'eepd
PIN"",",%i
..`.;v.<., ,.�s:: rx,
;; Q
,?£: 2�+s :'k<k;`.�k}'S:i�??,n k., £<t,`c\`,lM
:'.i, { k {.:x. �?r...�s...
Low, All wastes are segregated .and stored in appropriate containers before shipment to SWMU 1.
1#,.i`,?,
kw
?,. ..... < .}, 3'*<.x...�. 3. 3z; ..
Low, All materials are stored in drums or ether appropriate containers.
Low. All materials are stored in drums or rather appropriate containers inside buildings or other contained
areas.
Low. All materials are stored in drums or other appropriate containers inside buildings <or other contained
areas.
} *r 5
Love. All materials are stored in drums or other appropriate containers inside buildings or other contained
areas.
No Further Investigation/No
Corrective Measures.
There is low potential
for release and there are no documented releases reported or evidence thereof during
any site inspections.
----------------------------
Phase III Activities:
1) Confirm unit locations with CFS>
April 2011
DEQ-CFW 00046130

11
DUPONT — FAYETTEVILLE WORKS - SWMU PRIORITIZATION WORKSHEET
SWMU 3 ® Waste Liquid Hydrocarbon Storage Tank
Description: This unit lrvas a 412-gallon stainless steel, aboveground storage tank. It was vertically
mounted on reinforced concrete piers inside a reinforced concrete containment area. It was located within
the Nafion(.) Manufacturing Area and operated from 1979 to 2000, The tank collected manufacturing process
waste hydrocarbons for batch filling of 30-gal and 55-gal drums. The mixture of waste process hydrocarbons
contained mainly toluene with a secondary major constituent of acetonitrile. Diglyme (diethylene glycol
monomethyl ether), tetraglyme (tetra ethylene glycol monomethyl ether), and adiponitrile were minor
constituents. Small uantlties of other com abble process fluorocarbons were also resent.
Low. The waste liquid hydrocarbon was stored in an enclosed tank. The tank was located within a six-inch
thick seamless reinforced concrete diked containment area.
Low. The waste liquid hydrocarbon was stored in an enclosed tank. The tank was located within a six-inch
thick seamless reinforced concrete diked containment area.
Z .:,a ' ;s<,. • . k . zz }<,. : <:�>i''; :h es`>E'?z": { :z= �5z>a�1 ' x : } wh.,;.,;y i#�'i Low. The waste liquid hydrocarbon was stored in an enclosed tank. The tank was located within a six-inch
thick seamless reinforced concrete diked containment area.
Low. The wash: liquid hydrocarbon was stored in an enclosed tank. The tank was located within a six-inch
thick seamless reinforced concrete diked containment area. The containment area was equipped with a
sump. The containment and the sump capacity exceeded the maximum volume of the tank and four 55-
gailon drums.
:i~::5>.
Low. The waste liquid hydrocarbon was stored in an enclosed tank. The tank was located within a six-inch
thick seamless reinforced concrete diked containment area. The containment area was equipped with a
sump. The containment and the sump capacity exceeded the maximum volume of the tank and four 55-
gallon drums.
.;E IN }=f}>i
,z„=>i, r;.. �:�` '<<E `:, .z;o, <;E4; :,<sE :s n. w:: o:i .?>3.i„�f?. •'°i;'e's
:. h,". � is f � ..,,< ;<'3ro' '.
No Further Investigation/No Corrective Measures.
There is law potential for release and there are no documented releases reported or evidence thereof during
any site inspections. The flank was inspected every four years and had an external inspection every two
years.
Phase Ill ,activities:
1) Confirm unit location with CPS.
April 2011
DEQ-CFW 00046131

DUPONT — FAYETTEVILLE WORKS A SWMU PRIORITIZATION WORKSHEET
SWMU 4 — Waste Liquid Fluorocarbon Treatment System
Description: This unit includes a receiving tank and a neutralization reactor tank located in the NafionG?
Manufacturing Area. Both tanks have an 1100-gallon capacity. They are horizontally mounted in an iron
saddle and supports on reinforced concrete piers. Both tanks are constructed of Hastelloy 5B 575 Hastelloy
C276 an industrial allay. Fluorocarbon wastes are collected in the storage tank and transferred in 600-gallons
hatches to the reactor tank within a closed system. The tanks were installed in 1990 and are still in use.
{#7�rr, 7.11117 � f2 f:#i's'
:s:K',,:z�t> `s; > >:
Low, Flammable constituents have not been managed at this unit.
Loser. Fluorocarbon wastes are collected in the storage tank and transferred in 600-gallon batches to the
reactor tank within a closed system,
.. ..,..,:.., ..,,, .:... nia..3.'.` ,.,...s+z����x,:��N�. �t�*��z::�;z.uz��,'`,." 4#> z,„z�•'�'�„�#��.,5�'s.h?,,.,..}.,
Law. Fluorocarbon wastes are collected in the storage tank and transferred in 600-gallon batches tea the
reactor tank within a chased system.
'*- a -.s.: :. r�•` to � . �#'z }:,i,*„='e:``:z ``&`n �:s .�z��r ,�:£�v{±"iz('� 'z� �{,: s�z?>z 'E,>,
z
Loser. Fluorocarbon wastes are collected in the storage an and transferred in 6ii0-gallon batches to the
reactor tank within a closed system. The tanks themselves are located within the Waste Fluorocarbons
System's secondary containment area. This area is constructed of one -foot thick seamless reinforced
concrete and has a capacity of 10,500 gallons. The bottom of the diked area has a collection sump, Any
liquid or collected water in the stamp is inspected to insure there are no immiscible fluids and the pH is
between 4 and 9 prior to being released to the Nafion(E) process wastewater system,
5 =h.
Law. Fluorocarbon wastes are collected in the storage tank and transferred in 600-gallon batches to the
reactor tank within a closed system. The tanks themselves are located within the Waste Fluorocarbons
System's secondary containment area. This area is constructed of cane -foot thick seamless reinforced
concrete and has a capacity of 10,500 gallons. The bottom of the diked area has a collection sump. Any
liquid or collected water in the sump is inspected to insure there are no immiscible fluids and the pH is
between 4 and 9 prior to being released to the NafionCR? process wastewater system.
" :a"'#: #`:?%z<`!>>:: #.,#: :? #za::s #?>.zs x <. .<•z.z.z . `zz 4.,��#z. z
.,. ,. .,,.: � .,,,,,,. ,;;;,,,.,.. ».fin ":�: ,>', e.:.e», >.:2:n :?u; ;sa.. ,.. ,z,.. r.. Y#.:�5>��6:zat'zzzflz ,<.,:.,.,�k3'•5, »,., , ti`#.,�,#z,,,
No Further Investigation/too Corrective Measures.
The receiving unit is subjected to monthly ultrasonic inspections and semi-annual internal inspections, The
reactor unit receives annual ultrasonic and internal inspections. No oral accounts or written documentation of
releases were found. No signs of past releases were observed during any site visits.
Phase III Activities:
1) Confirm unit location with GPS.
April 2011
DEQ-CFW 00046132

M
El
------------------------
DUPONT — FAYETTEVILLE WORKS - SWMU PRIORITIZATION WORKSHEET
SWMU 5 — Liquid Mixed Waste Fluorocarbon Shipping Tank
Description: This unit was used to store neutralized waste liquid fluorocarbons prior to shipment to a
contract incinerator by tank truck, It was an unlined carbon steel aboveground storage tank with a 4290-
gallon capacity. It was horizontally mounted by an iron saddle and support on reinforced concrete piers. It
was located within the Waste Fluorocarbon System's secondary containment area, It operated from 1979 to
2000.
Low. Flammable constituents have not been managed at this unit.
_011�1'01
Low, The waste was stored -, i , n , an enclosed tank.
Low. The waste was stored in an enclosed tank.
N This aboveground storage tank was located within a secondary containment area. The area was constructed
of one -foot thick seamless reinforced concrete. The bottom of the diked area had a collection sump. Any
liquid or collected water in the sump was inspected to insure there were no immiscible fluids and the pH was
between 4 and 9 prior to being released to the Naflon@ process wastewater system,
ffl�.X*
X-0
This aboveground storage tank was located within a secondary containment area. The area was constructed
of one -foot thick seamless reinforced concrete. The bottom of the diked area had a collection sump. Any
liquid or collected water in the sump was inspected to insure there were no immiscible fluids and the pH was
between 4 and 9 prior to being released to the Nafion@ process wastewater system.
No Further Investigation/No Corrective Measures,
The tank was inspected once every two years. The wall thickness was tested externally every year, No oral
accounts or written documentation of releases were found.
Phase III Activities:
1) Confirm unit location with GPS.
April 2011
DEQ-CFW-00046133

DUPONT" — FA'YET"T"EVILLE WORKS a SWMU PRIORITIZATION WORKSHEET
SWMIJ 6 ® Process Sewer System (and Common Sump)
Description, This unit is a system of underground sewer pipes, manholes, and sumps that convey process
wastewater from the main plant areas to the site's wastewater treatment plant system. Plant personnel and
site sewer maps indicate that the pipes are constructed of vitrified day or steel. There are five process sewer
sumps throughout the plant and all are in -ground and constructed of reinforced concrete. These include the
following; 1. Butacite@ sump; 2. PVA sump; 3. Nafion@ Vinyl Ethers Forth sump; 4. Semiworks sump; 5.
Naflon(, Common Sump. All sumps are concrete -lined, and the Nafion@ Common Sump is also polylined.
The Nafion@ Common Sump was removed from process wastewater service in 2001; the other sumps are all
still active. The former Common Sump received waste from the Nafion@ process, which included process
wastewater, coolie vaster, and steam condensate from the various manufacturin units.
:2 {<3 ,k`:'y,a', }, t;?##` 'yk.'k' ;,�sY #{ `°i...:`.�.:: �{5k2•y,; .{3 `k. f,:
Loud. Organic constituents were detected in soils during the CS and Phase I RFI above MDL values but the
total concentration of the constituents is less than 1 % by weight.
Low. Organic constituents were detected in .soils during the CS and Phase I PFl above MDL values, but
were below EPA Regional Screening Levels (RSLs) industrial sail concentrations. Detected constituents are
located in subsurface soils (mare than 2 feet below grade) where exposure via this pathway is not expected,
Although volatile organic compounds have been detected in groundwater, a preliminary evaluation of the air
pathway resulted in a low potential for exposure,
�? 4 � �
f' zua
,,.,..n%F,...,.o....?.-a°�
Low. Organic and inorganic constituents were detected in soils during the CS and Phase I RA above MDL
values, but below PSL industrial soil concentrations. Detected constituents are located in subsurface soils
(more than 2 feet below grade) where exposure potential is love. Institutional and operational controls exist to
prevent excavation without taking proper measures and to minimize the potential for exposures via this
pathway.
Mkt;,} k� -. k �.Fk 1 2 ..... ......... IN R z3ka;z> k�' zz # zn,r�'rl€
�.:kkk,`. #r^ .,'3�,\....-.,.<:2�`�.k: n �:.'a�$.' � � � "�Y 5a� .Y, k2 k#vk*t'`ikR kkk ;,
Low. Methylene chloride, benzo(a)pyrene and iron were detected in soils slightly above NC soil
concentrations (sail concentrations protective of groundwater), Several constituents were detected in the
groundwater at levels above the DENR 2L groundwater quality standards. Groundwater flow is expected to
be towards the Cape Fear River therefore, there are no potable sources for down gradient groundwater use,
The presence of the underlying clay layer reduces the potential for vertical groundwater migration.
x
:.
r :
x,n , , . 004
o
Low. This unit is designed to operate with a freeboard and as such would not overflow to a surface water
body, A wet weather channel is present approximately 400 feet to the northeast of the unit. Sample results
from surface water drainages were below NC 2B concentrations and the unit is overlain by a thick cover of
soil and lies on relatively flat ground that does not promote runoff leading to no exposure via this pathway.
.t ON
No Further Investigation/Corrective Measures Needed
Repairs to the Common Sump were made and the unit has since been taken out of service. The unit will be
included in the site Snide groundwater monitoring program (AOC GW) to monitor potential impacts to the
shallow groundwater.
Phase Ili Activities:
1) Confirm unit location with GPS.
2) Long-term monitoring as part of AOC CW.
IWl
April 2011
DEQ-CFW 00046134

DUPONT — FAYETTEVILLE WORKS - SWMU PRIORITIZATION WORKSHEET
SWMU 7 ® Storm Sewer System
Description: This unit collects stormwater through a system of sumps, drains and ditches located
throughout the plant which are routed to the Cape Fear River. The stormwater collection system is designed
to handle a combined rate of approximately 13,900 gallons per minute (gpm). Rainfall accumulated in
bermed chemical containment areas and other engineered spill containment structures are routed through
the process sewer system after the waters have been tested and approved for such discharge, During
construction of the APFO manufacturing facility, a temporary rain water retention basin and associated
drainage channel were constructed. The basin operating by allowing collected rain water to infiltrate and
evaporate. The storm sewer system became operational in 1972 when the plant was started -up. It is still in
use; however, the stormwater retention basin associated with the APFO manufacturing area was closed in
2007,
Low. Engineering control devices are in place to prevent the mixture and/or contact with plant process
constituents.
Low. Engineering control devices are in place to prevent the mixture and/or contact with plant process
constituents.
ON Or
ag"
Low. Engineering control devices are in place to prevent the mixture and/or contact with plant process
constituents. Evidenbe of a release was identified in the vicinity of the former rain water retention basin north
of the APFO manufacturing facility. However, the APFO has been identified in shallow groundwater as a
result of air deposition in the immediate vicinity of the APFO manufacturing area being carried via runoff to
the former retention basin and infiltrating into the subsurface, Since APFO is not present in the surface soils;
potential for direct contact is considered to be low.
Insufficient Data. Evidence of a release was identified in the vicinity of the former rain water retention basin
north of the APFO manufacturing facility. APFO has been of identified in shallow groundwater as a result of air
deposition in the immediate vicinity of the APFO manufacturing area being carried via runoff to the former
retention basin and infiltrating into the subsurface. Extent of the shallow groundwater contamination has not
been determined.
Insuffic'le"nt Data. -Evidence of a release was identified in the vicinity of the for=r rain water retention basin
north of the APFO manufacturing facility. APFO has been identified in shallow groundwater as a result of air
deposition in the immediate vicinity of the APFO manufacturing area being carried via runoff to the former
retention basin and infiltrating into the subsurface. The groundwater quality near Willis Creek has not been
determined.
-M,
- ..........
Insufficient Data.
Need additional data to determine extent of impacts of APFO on shallow groundwater and near Willis Creek.
--------------
Phase III Activities:
1) Confirm location/boundaries of the unit using CPS,
2) Determine the perimeter of the clay layer underneath the APFO manufacturing area.
3) Further investigate groundwater quality to the west and northeast of the area.
April 2011
DEQ-CFW-00046135

SWMU 8 — Wastewater Treatment Plant System
Description: The wastewater treatment plant (WWTP) is located on the southern portion of the
manufacturing area. The WWTP is approximately 2000 feet west of the Cape Fear River and just north of
the unnamed effluent channel used as the NPDES permitted outfall, Both sanitary and process wastewaters
are biologically treated in the WVVTP activated sludge process involving an influent sump, retention tank,
equalization basin, aeration tank, clarifiers, dissolved air flotation tank, digester, sludge press, and sludge
dryerSr The wastewater treatment Qlant has been in service since 1972,
Low. Series of in -ground sumps, tanks and basins used for processing wastewaters.
Low. Series of in -ground sumps, tanks and basins used for processing wastewaters.
Low. Series of in -ground sumps, tanks and basins used -for processing wastewaters.
Low. Series of in -ground sumps, tanks and basins used for processing wastewaters. All units are located in
diked containment areas, All piping is located aboveground except for the treated wastewater feed line to the
clarifiers and the gravity drain piping from the clarifiers to the ouffall,
Low. Series of in -ground sumps, tanks and basins used for processing wastewaters. All units are located in
diked containment areas. All piping is located aboveground except for the treated wastewater feed line to the
clarifiers and the gravity drain piping from the clarifiers to the permitted outfall,
No Further Investigation/No Corrective Measures.
No oral or written documentation of releases were found. No evidence of release was observed during any
site visits,
---------------
PheneIII Activities:
1) Confirm unit location with GPG.
Apcil2OD
OEQ-CFVV_00046136

El
DUPONT ® FaAYETTE'@ ILLE WORKS - SWMU PRIORITIZATION TION WORKSHEE T
SWMU 9 aA & R ® Former WWTP Lagoons
Description: SWMU 9 A & B consisted of unlined lagoons used for the settling and dewatering of waste
activated sludge from the site's Wastewater Treatment Plant (WWTP). These lagoons were used from 1979
until the current WWTP`s filter press was completed. The lagoons were in -ground, rectangular in shape and
were adjacent to each other. Their dimensions were 380 feet by 578 feet by 6 feet deep and were located
east of the existing WWTP area. Wastewater treatment in the lagoons ended in 198; activated sludge was
removed in 1990.
:..h.,J:o#v ..x ,9o.;, Fy•
,'y'i%k: # 'yk.., . ;}>'F;i ``<F££`6t F'kF",k`
Low. Low concentrations of TPH, methanol and acetone were detected in soils during the GS above MDL
values but the total concentration of the constituents is less than 1 % by weight.
Love. Detected constituents are located in subsurface soils (more than 2 feet below grade) where exposure
via this pathway is not expected. No volatile organic compounds have been detected in groundwater.
Low. Detected constituents are located in subsurface soils (more than 2 feet below grade) where exposure
potential is love. Institutional and operational controls exist to prevent excavation without taking proper
measures and to minimize the potential for exposures via this pathway.
MOM 1 i WIN
Insufficient Data. Detected concentrations of inorganic constituents appear to be associated with ambient
background conditions. Detections of bromoform and dibromochloromethane in well kW A I in 2005 exceed
NC 2Ls and TPH was detected at 680 ppb in MW-123 in 1999,
nMM
Lowy. Groundwater monitoring results from down -gradient wells and the perimeter wells adjacent to the Cape
Fear River do not indicate that detected constituents have migrated to any surface water body.
y 4:
Insufficient Data
Detected TPH in soil is located in subsurface soils (>3 bgs), below the depth of a concern for direct contact.
Detected constituents in groundwater are below screening criteria or associated with ambient background
conditions except for low detections of three organic constituents (bromoform, dibromochloromethane and
TPH). The Phase 11 RFI Report concluded that additional characterization of groundwater quality to the
southwest of the units is not warranted. However, as NCDENR representatives requested that occurrences
of bromoform; dibromochloromethane, and TPH at the site be further investigated, confirmation sampling of
the groundwater in wells near SWMU 9A & B will be conducted during the Phase Ill RFl to determine current
concentrations of bromoform, dibromochloromethane, and TPH in the area.
Phase III Activities:
1) Confirm unit location with GPS.
2) Confirmatory groundwater sampling of monitoring wells MW-11 and MW-12S as part of AOC
CW.
3) Confirmatory sampling of the groundwater in wells near SWMU 9 A & B will be conducted to
determine current concentrations of bromoform, dibromochloromethane, and TPH in the
area.
PARSONS April 2011
DEQ-CFW 00046137

Description: SWMU 9C consisted of six unlined lagoons used for the settling and dewatering of waste
activated sludge from the site's Wastewater Treatment Plant (WWTP). These lagoons were used from 1972
until 1979 when the newer lagoons (SWMU 9A-B) were started -up. The lagoons were in -ground, rectangular
in shape and were adjacent to each other. Their dimensions were 160 feet by 750 feet by 6 feet deep and
were located east of the existing W`WTP area, and south of SWMU 9A-B, Wastewater treatment in the
lagoons ended in 1979. Accumulated sludge was not removed. The Lagoons were covered with clean soil
and abandoned in ce.
Low. The lagoons were covered with clean soil in 1979,
Low. The lagoons were covered with clean soil in 1979.
'rere* le te
rthe 6S, Phase RF an Pha RFI in es
Low, Groundwater monitoring results do not indicate that detected constituents have migrated to any surface
water body.
No Further Investigation/No Corrective Measures
Groundwater samples did not identify any constituents of concern in the nearby wells and no releases have
been documented.
Phase III Aobvitiea
1) Confirm unit location with GP8.
April 2011
OEQ-CFVV_00046138

Description: The ButaciteCr<) waste flake area is located in near the Butacite@ sump. This area serves as
the collection and storage area for waste PVB flake (off -specification Butacit&V Flake, which consists of 3GO
plasticizer and polyvinyl butyral) from the manufacture of Butacite-0. This material is non -hazardous and
contains no hazardous constituents.
law NJ
Low. Flammable constituents have not been managed at this unit.
11
Low, The waste flake is collected in plastic clumpsters that are located indoors on a concrete floor,
Low, The waste flake is collected in plastic dumpsters that are locate i oors on a concrete floor.
Low. he waste flake is collea�d in plastic dumpsters that are located indoors on a concrete floor. This area
is roofed with a concrete floor. Any waste flake that collects on the floor is swept up and put back in
Low. The waste flake is collected in plastic dumpsters that are located indoors on a concrete floor. Thisarea
is roofed with a concrete floor. Any waste flake that collects on the floor is swept up and put back in
No Further Investigation/No Corrective Measures.
No oral or written documentation of releases were found, No evidence of release was observed during any
site visits.
Phase III Activities:
1) Confirm unit location with GPS.
OEQ-CFVV_00046139

Description: Polyvinyl alcohol (PVA) is received at the Butacitet area as a powder in bulk containers (rail
cars). During the transfer process from the bulk containers, some PVA powder is lost and must be swept up
and disposed. The transfer operation occurs over a concrete pad. Past practice called for washing the
powder from the bulk unloading into an associated drain that feeds into the PVA sump. From the sump, the
effluent water and PVA powder would be pumped into the waste Flake Building's vibrating screener.
However, current area work practice specifies the powder to be physically removed via sweeping or
vacuumling-an-,.1 does not call for this water washdown,
Low. Polyvinyl alcohol is non -hazardous and contains no hazardous constituents,
Low. Polyvinyl alcohol is non -hazardous and contains no hazardous constituents.
IME
ow. Polyvinyl alcohol is non -hazardous and contains no hazardous constituents,
Low. Polyvinyl alcohol is non -hazardous and contains no hazardous constituents and the process occurs in
an area that is concrete -lined.
Low. Polyvinyl alcohol is non -hazardous and contains no hazardous constituents and the process occurs in
an area that is concrete -lined,
No Further Investigation/No Corrective Measures,
No oral or written documentation of releases were found, No evidence of release was observed during any
site visits.
Phase III Activities:
1) Confirm unit location with GPS.
April 2011
OEQ-CFVV_00046140

SWMU 12 — Power Unloading Area Oil/Water Separator
Description: SWMU 12 receives liquids that are collected in the secondary containment of the unloading
area. The liquids are conveyed via pipeline to the unit that separates the water (rainfall, wash water, surface
water, etc.) from the sludge (oil). The water is sent to the neutralizer where it is neutralized to a pH>6 and
<9, and then is sent to the process wastewater sewer. The sludge is periodically removed and placed into
55-gallon drums, which are moved to the storage area to await off -site disposal. A "High Level" alarm which
sounds in the Powerhouse ICR prevents overflow of the separator, The separator is located east of the No. 6
Fuel Tank in the Power Area. The unit has been in oLer tion since 1972.
Low. Wastes handled are primarily water and non-flammable.
Low. Wastes handled are primarily water and non-flammable.
Low. Wastes handled are primarily water and non-flammable.
Low. Wastes handled are primarily water and non-flammable. The unit is concrete -lined and routinely
pumped dry.
Lowlastes handled are primarily water and non-flammable, The unit is concrete -lined and routinely
pumped dry.
No Further Investigation/No Corrective Measures.
No oral or written documentation of releases were found. No evidence of release was observed during any
site visits,
Phase III Activiti*n�
1) Confirm unit location with SPS.
April 2011
OEQ-CFVV_00046141

Description: Construction Debris from building the Butacite(DR and Dymetrol@ Manufacturing Areas was
buried beneath the building site of the Nafiong) Manufacturing Area prior to construction. The backfill soil
used to cover this area came from within the Fayetteville Works site's property boundary. The approximate
area of this SWMU is 0.7 acres, and is approximately four feet deep. This was a one-time event occurring in
1972,
Low. Flammable constituents have not been managed at this unit,
Low. Buried construction debris.
Low, Buried construction debris.
cc nstructi n 2006 from a channel located to the north of
this unit as well as groundwater samples collected from monitor well down -gradient of this unit did not
indicate this unit has released. Analytical date associated with these samples can be found in the Phase 11
RCRA Facility Report. Additionally, extensive analysis done on leachate indicates no release.
w, Buried construction debris. Surface water data collected in 2006 from a channel located to the north of
this unit as well as groundwater samples collected from monitor well down -gradient of this unit did not
indicate this unit has released. Analytical data associated with these samples can be found in the Phase 11
RCRA Facility Report. Additionally, extensive analysis done on leachate indicates no release.
No Further Investigation/No Corrective Measures,
No evidence of release based on analytical results and history of disposal.
Phase III Activities:
1) Confirm unit location with GPS.
April 2011
OEQ-CFVV_00046142

SWMU 14 A through G — Area Septic Tanks
Description: There are two septic tanks that collect sanitary sewer waste from different areas on the plant
site. They are located at the WX Building and the construction area Foreman Trailer's restroom trailer,
There were five septic tanks that are no longer active; three were in the construction area, one at the
Standard Warehouse trailers, and one in the MMF area. The tanks generally contain several thousand
gallons of sanitary waste. Septic tank systems in the construction area, at the Standard Warehouse trailers,
and in the MMF area were inactive by 2000. Septic tank systems for the WX Building and Construction
Foreman Trailer restroom traile��= active.
Low. Flammable constituents have not been managed at this unit.
Low, The unit is used to treat and store sanitary sewage. The tanks are periodically pumped out and the
waste treated at the site's Wastewater Treatment Plant.
Low. unit is used to treat and store sanitary sewage. The tanks are periodically pumped out and the
waste treated at the site's Wastewater Treatment Plant,
Low. The unit is used to treat and store sanitary sewage. The tanks are periodically pumped out and the
waste treated at the site's Wastewater Treatment Plant.
Low. The unit is used to treat and store sanitary sewage, The tanks are periodically pumped out and the
waste treated at the site's Wastewater Treatment Plant.
No Further InvestigationlNo Corrective Measures.
No oral or written documentation of releases were found. No evidence of release was observed during any
site visits.
Phase III Activities:
i) Confirm unit locations with BPS.
April20D
OEQ-CFVV_00046143

DUPONT ® FAY TT VILE WORKS - SWMU PRIORITIZATION WORKSHEET
SWMIJ 15 A through F — Used Oil Accumulation Areas
Description: Several arms are or have been temporary collection and storage areas for non -hazardous
used oils. These areas include the fallowing: A) Stores; B) Dymetrol®; C) Construction;
D) Butaoite-0; E) Nafion®: and F) PMDF. All areas are on secondary containment pallets. Prior to release of
any accumulated storm water to the storm sewers, the water is checked for oil sheen. The used oil collection
area at Stores and D metro# R were eliminated as of 2006.
Y
lit
:. ,;... ..h.:.: .; z �;x fi .�,.::x? ?' a.� E,,
Low. Used lubricants and motor oils with loaf flash potential,
ROM,
Low. Temporary collection and storage areas for non -hazardous used oils.
?::..'.
mm
Low. Temporary collection and storage areas for non -hazardous used oils.
Low. Temporary collection and storage areas for non -hazardous used oils. All areas are on secondary
containment pallets. Prior to release of any accumulated storm water to the storm sewers, the water is
checked for ail sheen.
�y;s`>z;::
'gx:: ;�.;}Y<,
,. t>
.<. :.. : :..,.: }''o NEW
Lave. Temporary collection and storage areas for non -hazardous used oils. All areas are on secondary
containment pallets. Briar to release of any accumulated storm water to the storm sewers, the water is
checked for oil sheen.
,.
No Further Investigation/No Corrective Measures.
No oral or written documentation of releases were found. No evidence of release was observed during any
site visits..
Phase Ill Activities:
1) Confirm unit locations with CPS.
April 2011
DEQ-CFW 00046144

SWMU 16 — Borrow Pit — Construction Debris Disposal Area
Description. The Borrow Pit is an active, unlined area from which soil or other unconsolidated materials are
removed to be used, without further processing, for on -site construction and maintenance activities. Also,
construction materials (excavated soils) and other non -hazardous materials and debris are deposited in this
area. It covers approximately five acres northwest of the Nafion®R area, The unit is approximately ten feet
deep and has been active since 1972.
Low. Flammable materials have not been used or disposed in this area. Materials disposed of in this area
include masonry, concrete, asphalt, soil, and vegetable matter such as tree stumps and branches. Dredged
sediment from the River Water Sediment Retention Basins (SWMU 21A-B) was disposed of in this area circa
Low. Non -hazardous materials and debris have been disposed of in this area. Materials disposed of in this
area include masonry, concrete, asphalt, soil, and vegetable matter such as tree stumps and branches.
Dredged sediment from the River Water Sediment Retention Basins (SWMU 21A-B) was disposed of in this
area circa 1985 and 1995,
Low, Non -hazardous materials and debris have been disposed of in this area. Materia s disposed of in this
area include masonry, concrete, asphalt, soil, and vegetable matter such as tree stumps and branches.
Dredged sediment from the River Water Sediment Retention Basins (SWMU 21A-B) was disposed of in this
area circa 1985 and 1995.
Low. Non -hazardous materials and debris have been disposed of in this area. Materials disposed of in this
area include masonry, concrete, asphalt, soil, and vegetable matter such as tree stumps and branches.
Dredged sediment from the River Water Sediment Retention Basins (SWMU 21A-B) was disposed of in this
area circa 1985 and 1995.
Low. Non -hazardous materials and debris have been disposed of in this area. Materials disposed of in this
area include masonry, concrete, asphalt, soil, and vegetable matter such as tree stumps and branches.
Dredged sediment from the River Water Sediment Retention Basins (SWM U 21 A-13) was disposed of in this
area circa 1985 and 1995.
Insufficient Data,
No oral or written documentation of releases were found, No evidence of release was observed during any
site visits. This SWMU was not determined to need additional investigation through the, risk -based re -
prioritization process. However, to address a specific NCDENR request, confirmation sampling of the area
will be conducted during the Phase III RFI to determine whether SWMU 16 could be a possible source of
APFO in groundwater.
Phase III Activities:
1) Confirm unit boundaries with GpS,
2) Conduct confirmation sampling in the area,
April 2011
OEQ-CFVV_00046145

Description: This unit is a 6000-gallon carbon steel above ground storage tank located in the Nafion@
Manufacturing area. It is horizontally mounted and sits within secondary containment area. The unit has
been in oeeration since 1984.
1101
INOWWWWWWRI
Low. Flammable materials have not been used at the unit.
Low. The waste dimethyl sul xide (DMSO) and potassium hydroxide (KOH) are contained in an enclosed
WN
Low. The waste DMSO and KOH are contained in an enclosed tank,
Low, The tank is located within a one -foot thick seamless reinforced concrete diked containment area. A
sump in the containment area is equipped with a high level alarm which sounds when the sump has reached
90 percent of capacity. Any liquid or collected water in the sump is inspected to insure there are no
immiscible fluids and the pH is between 4 and 9 prior to being released to the Naflon@ Area common sump.
The current area corrosion control program requires testing of shell thickness using external ultrasonic
techniques as specified in the RCRA permit as well as external inspections of the tank.
Low. The tank is located within a one -foot thick seamless reinforced concrete diked containment area. A
sump in the containment area is equipped with a high level alarm which sounds when the sump has reached
90 percent of capacity. Any liquid or collected water in the sump is inspected to insure there are no
immiscible fluids and the pH is between 4 and 9 prior to being released to the Nafion®R Area common sump.
The current area corrosion control program requires testing of shell thickness using external ultrasonic
techniques as specified in the RCRA permit as well as external inspections of the tank.
IRWIN
No Further Investigation/No Corrective Measures.
No oral or written documentation of releases were found, No evidence of release was observed during any
site visits.
Phase NActivities:
1) Confirm unit location with GPS.
April 2011
OEQ-CFVV_00046146

El
SWMU 18 — VES Waste Hydrocarbon Storage Tank
'
This unit was a 65 gallon stainless steel aboveground storage tank located in the Nafion@
Vinyl Ethers South (VES) manufacturing area, It was vertically mounted on 3/16-inch A36 iron supports
welded to W8 x 18 I -Beams, It was in operation from 1996 — 2000, The tank collected a process waste
hydrocarbon stream for batch filling of 55-gallon containers. The waste process hydrocarbon contained
mainly acetonitrile. A small uantitX of comEatible 2rocess fluorocarbon was also eresent
Low. The waste was stored in an enclosed tank and is no longer in operation.
Low. The waste was stored in an enclosed tank.
Low. The waste was stored in an enclosed tank and is no longer in operation.
Low, The waste was stored in an enclosed tank and is no longer in operation. The tank was located inside a
36" wide x 36" long x 22" wide catch pan constructed of 3/16" thick stainless steel, The containment volume
was adequate for the entire contents of the tank plus six inches of rainfall (24-hour, 25-year storm event).
Low. The waste was stored in an enclosed tank and is no longer in operation. The tank was located inside a
36" wide x 36" long x 22" wide catch pan constructed of 3/16" thick stainless steel, The containment volume
was adequate for the entire contents of the tank plus six inches of rainfall (24-hour, 25-year storm event).
IN
No Further Investigation/No Corrective Measures.
No oral or written documentation of releases were found. No evidence of release was observed during any
site visits,
Phase Ill Activities:
1) Confirmunit location with {S9S.
April 2011
OEQ-CFVV_00046147

DUPONT — FAYET`fEVILLE WORK - SWMU PRIORITIZATION WORKSHEE'T
SWfs U 19 — VES Waste Fluorocarbon Storage 'Tank
Description- This unit is a 86-gallon stainless steel above ground storage tank Iodated in the Nafion® Vinyl
Ethers South (VES) manufacturing area. It is vertically mounted on 3116-inch A36 iron supports. It has been
in operation since 1996, The tank collects a process waste fluorocarbon stream to be pumped to the existing
Waste Liquid Fluorocarbon Storage Tank. The waste process fluorocarbon contains mainly fluorocarbon. A
small quantit 4of corn atible rocess h drocarbon can also be resent.
.,:,....;:a,f�ak`.'3;*�:F?z?,Ezt.� ..; .H'
Low, The unit handles primarily non-flammable fluorocarbon.
Low, The waste is stored in an enclosed tank,
Low, The waste is stored in an enclosed tank,
Loan. The waste is stared in an enclosed tank. The tank is located within a six-inch thick seamless reinforced
concrete diked containment area. The containment area is equipped with a sump. The containment area will
contain the entire contents of the tank. The current area corrosion control program requires internal
inspection of the tank every four years and external inspections every two years.
a.'a3�>�,... �.<�Y;�e€Y e, a.,.,.?ufi;a.�.X.,fC�E+`,'t ,En�?+�A',,,,.,v`aj.,.., ,3,,r3;�M;. '3�w .>>.
Low. The waste is stored in an enclosed tank. The tank is located within a six -.inch thick seamless reinforced
concrete diked containment area. The containment area is equipped with a sump, The containment area will
contain the entire contents of the tank. The current area corrosion control program requires internal
inspection of the tank every four years and external inspections every two years.
No Further Investigation/No Corrective Measures,
No oral or written documentation of releases were found. No evidence of release was observed during any
site visits.
Phase III Activities:
1) Confirm unit location with CPS.
April 2011
DEQ-CFW 00046148

El
DUPONT
— FAYETTEVILLE WORKS a SWMU PRIORITIZATION N WCif KSHEET
SWMU 20A -- Waste Acid Tank
Description: This unit consists of a 8,373-gallon aboveground, open tapped waste acid storage tank. This
tank is used to store hydrochloric acid and acetic acid. The tank is made out of FRP (fiberglass reinforced
plastic), The tank is approximately 12 feet high and has a diameter of ten feet, nine inches. The tank Is
vertically mounted and sits on a concrete pad in the Nafion® Manufacturing :area. material from this tank is
used to neutralize the alkaline waste from the Waste alkaline ,aqueous Tank, which is then transferred to the
site's Wastewater Treatment Plant. This tank has been in o eration since 1977.
? `
Low.. Flammable materials are not handled in this unit..
Low. The waste is stared in an enclosed tank.
Low, The waste is stored in an enclosed tank.
10*40
j.
Lava. The waste is stored in an enclosed tank. This tank farm is fully curbed. Any spills or leaks would be
collected and sent to the process sewer for treatment at the Wastewater Treatment Plant, The storage pad is
intact with no cracks or hales.
Low. The waste is stored in an enclosed tank. This tank farm is fully curbed. Any spills or leaks would be
collected and sent to the process sewer for treatment at the Wastewater Treatment Plant, The storage pad is
intact with no cracks or hales.
,
` S
, :.. ,:... :,:. F :... �..... •:.+ a>,,;i'FkY'.t,sJ.ax'h `k��.�':`.<:�\?i; ...'v^.tt.� `'`» s. s,?...�.;.:: ..,
No Further Investigation/No Corrective measures.
No oral or written documentation of releases were found. No evidence of release was observed during any
site visits.
---------------------------
Phase III Activities:
1) Confirm unit location with GP .
April 2011
DEQ-CFW 00046149

Phase III Activities:
1) Confirm unit location with GPS.
April 2011
OEQ-CFVV_00046150

SWMU 21 A & B — River Water Sediment Retention Basins
Description: This unit consists of two earthen basins that are used to hold sediment removed from the Cape
Fear River water. The south basin is denoted as SWMU 21A, and the north basin is denoted as SWMU 21 B,
Each basin is approximately 370 feet long, 210 feet wide and 6 feet deep (4.25 acre/feet per basin). Water
overflow from these basins enters the Nafion@ non -contact cooling water ditch for discharge through a
NPDES permitted outfall. These units started ogration in 1972 and are still active.
Low, Flammable materials are not handled in this unit.
Low. These basins receive Cape Fear River water and sediment from the River Water Treatment facility.
The sediment is naturally occurring in the river water. The River Water Treatment facility uses alum
(aluminum sulfate), which is not a hazardous constituent, as a flocculent.
NON
IN
0,15
Low. These basins receive Cape Fear River water and sediment from the River Water Treatment facility,
The sediment is naturally occurring in the river water. The River Water Treatment facility uses alum
(aluminum sulfate), which is not a hazardous constituent, as a flocculent.
Low. The basins are earth -packed lined. These basins receive Cape Fear River water and sediment from
the River Water Treatment facility. The River Water Treatment facility uses alum (aluminum sulfate), which is
not a hazardous constituent, as a flocculent, No wastes handled by this unit contain hazardous constituents.
ZEN
Low. The basins are earth -packed lined, These basins receive Cape Fear River water and sediment from
the River Water Treatment facility. The River Water Treatment facility uses alum (aluminum sulfate), which is
not a hazardous constituent, as a flocculent. No wastes handled by this unit contain hazardous constituents,
All overflow liquids from this unit release to the NPDES permitted Outfall 002.
"I'll 1117
No Further Investigation/No Corrective Measures.
No oral or written documentation of releases were found, No evidence of release was observed during any
site visits. All overflow liquids from this unit release to the NPIDES permitted Outfall 002. The accumulated
sediment has been removed from the basins on two occasions since startup (circa 1985 and 1995).
Phase III Activities:
1) Confirm unit location with GPS.
April 2011
OEQ-CFVV_00046151

SWMU 22 — Former Construction Sandblasting Building
Description: This unit consisted of a small building and adjacent concrete pad where sandblasting and
painting activities occurred. The unit was in operation from 1972 — 1988,
Low. The waste handled at this unit consisted of sandblasting material (solid particles) and paint residuals.
The unit is no longer in operation,
Low. The unit is no longer in operation. All wastes were contained in the building or on the adjacent pad
where they were swept up and discarded.
NOW ;MM
Low. 'the unit is no longer in operation. All wastes were contained in the building or on the adjacent pa'
where they were swept up and discarded,
Low. The unit is no longer in operation. All wastes were cA-)ntained in the building or on the adjacent pad
where they were swept up and discarded. TCLP analysis of the waste sandblasting media showed no
detectable levels for all analyzed constituents, except for barium that was measured at 1.6 mg/L in the
Low. The unit is no longer in operation. All wastes were contained in the building or on the adjacent pad
where they were swept up and discarded. TCLP analysis of the waste sandblasting media showed no
detectable levels for all analyzed constituents, except for barium that was measured at 1.6 mg/L in the
No Further Investigation/No Corrective Measures.
No oral or written documentation of releases were found. No evidence of release was observed during any
site visits.
Phase III Activities:
1) Confirm unit location with GP8.
April 2011
OEQ-CFVV_00046152

Phase III Activities:
1) Confirm unit location with {SPS.
AprU2OD
OEQ-CFVV_00046153

Phase III Activities:
April 2011
OEQ-CFVV_00046154

Phase III Activities:
1) Confirm unit location with CPS.
April2011
DEQ-CFW 00046155

DUPONT® FAYEtTEVILL WORKS - SWMU PRIORITIZATION WORK HEFT
SWMU 24 ® Waste DMF Tank
Description: This tank was a 40-gallon cube -shaped stainless steel above ground storage tank. It was set
inside a stainless steel containment area inside the Dutacite0 Manufacturing Building. This tank received
waste n-dimethylformamide ("DMF") from the ButacitetRD Tinting Process. The unit started operations in 1972,
The Tinting Process was permanently shutdown in December 2005. The waste DMF was a D001 ignitable
hazardous waste, The waste could have had as much as 15% dissolved polyvinyl butyral (PVB) and inks.
The waste contained nickel dibutyldithiocarbamate, which is a hazardous constituent {Mickel compounds,
N.O.S.) under 40 CFR 261 A Uendix VIII.
Low. This tank was permanently shutdown in December 2008.
Low. The waste was stored in an enclosed tank,
Low. The waste was stored in an enclosed tank.
The waste DMF was stored in an enclosed tank. The tank was located within a stainless steel diked
containment area. The containment exceeded the maximum volume of the tank. If there had been any
spills, it would have been pumped from the containment into a 55-gallon container.
} "
The waste DMF was stored in an enclosed tank. The tank was located within a stainless steel diked
containment area. The containment exceeded the maximum volume of the tank. If there had been any
spills, it would have been pumped from the containment into a 55-gallon container.
NIX
No Further Investigation/No Corrective Measures.
No oval or written documentation of releases were found. No evidence of release was observed during any
site visits,
Phase III Activities:
1) Confirm tarot location with GPS.
April 2011
DEQ-CFW 00046156

Phase Ill Activities:
1) Confirm unit location with GPS.
April 2011
DEQ-CFW-00046157

DUPONT — FA'YET TEVILLE WORKS 4 SWMU PRIORITIZATION WORKSHEET
SWMU 26 -- p DF Container Storage Area
Description: This unit consists of an uncovered concrete storage area with secondary containment in which
containers of raw materials and various non -hazardous wastes, including but not limited to used oil, are
temporarily stored until the containers are either moved to the permitted RCRA container storage area or are
transported oft -site. The unit has been in o eration }since 2000.
Low. Small quantities of rave materials or non -hazardous wastes are stored in this area prior to be
transferred to the permitted RCRA container storage area or transported off -site.
kk's�#s:>?
: ff,; :FF
aF"'s�{x's s'iW
Low. Small quantities of raw materials or non -hazardous wastes are stored In this area prior to be
transferred to the permitted RCRA container storage area or transported off -site.
.Al -: . Ir 1.
Low. Small quantities of raw materials or nor; -hazardous wastes are stored in this area prior to be
transferred to the permitted RCRA container storage area or transported off -site.
N
ziz
Low. Small quantities of raw materials or non -hazardous wastes are stored in this area prior to be
transferred to the permitted RCRA container storage area or transported of{ -site. All wastes are contained
within the secondary containment in this area..
.2 d h 1? kk k
Low. Small quantities of raw materials or non -hazardous wastes are stored in this area prior to be
transferred to the permitted RCRA container storage area or transported off -site. All wastes are contained
within the secondary containment in this area.
No Further InvestigationlNo Corrective Measures.
No oral or written documentation of releases were found. No evidence of release was observed during any
site visits.
Phase III Activities:
1) Confirm unit location with GPS.
April 2011
DEQ-CFW 00046158

El
Phase III Activities:
i) Confirm unit location with GPS.
OEQ-CFVV_00046159

Phase III Activities:
1) Confirm unit location with GPS.
OEQ-CFVV_00046160

DUPONT — FAYETTEVILLE WORKS - SWMU PRIORITIZATION WORKSHEET
SWMU 29 —Waste Hydrocarbon 90-Day Container
Description: This unit is a stainless steel DOT Specification 51 portable tank (lSO container) with a capacity
of approximately 5300 gallons.. It is mounted horizontally in a carriage for over -the -read transportation. The
container operates as a 90-day storage container. It sits on a concrete containment area, but the
containment volume is less than the capacity of the container. It is located within the Nafion@ Manufacturing
Area. The unit started operation in 2000 and is still active. The container collects manufacturing process
waste hydrocarbons from the various processes.
The mixture of waste process hydrocarbons contains mainly acetonitrile with toluene accounting for at most
10% by weight, Diglyme (diethylene glycol monornethyi ether); tetragiyrne (tetra ethylene glycol monomethyl
ether), and adiponitnle make up the remaining 50% of the waste. Small quantities of other compatible
process fluorocarbons are also present,
,Ka,i,
Low. The ISO is put into service with a nitrogen blanket in it so as to prevent the hydrocarbon vapor-, from
reaching the flammability range. The ISO's internal pressure is maintained as a minimum of 30 kPa using
make-up nitrogen. As new waste enters the ISO, the displaced headspace (nitrogen and hydrocarbons) is
vented to maintain the 30 kPa pressure set point. With this automatic pressure control system, oxygen is
prevented from entering the ISO,
NNW?
Low, The waste hydrocarbons are stored in an enclosed tanker. The container remains on -site for less than
90-days before it is transported to an off -site disposal facility. The container has an internal inspection every
6 months.
,
Lour. The waste hydrocarbons are stored in an enclosed tanker.
I.I:.:.< :. _.. „o"M ,
Low. The waste hydrocarbons are stored in an enclosed tanker, The container sits on a concrete diked
containment area, but the containment area's capacity (2600 gallons) is less than the volume of the
container. This secondary containment structure drains via underground pipe to an in -ground containment
sump, However, current practice is to keep the drain valve closed until accumulated rainfall can be analyzed
for hydrocarbons, and if the analysis shows that the accumulated rainfall is uncontaminated, then it is drained
to the sump, The container remains on -site for less than 90-days before it is transported to an off -site
disposal facility. The container has an internal inspection every 6 months_
{
?.fir
Low. The waste hydrocarbons are stored in an enclosed tanker. The container sits on a concrete diked
containment area, but the containment area's capacity (2600 gallons) is less than the volume of the
container. This secondary containment structure drains via underground pipe to an in -ground containment
sump. However, current practice is to keep the drain valve closed until accumulated rainfall can be analyzed
for hydrocarbons, and if the analysis shows that the accumulated rainfall is uncontaminated, then it is drained
to the sump. The container remains on -site for less than 96-days before it is transported to an off -site
disposal facility. The container has an internal inspection every 6 months.
y$$ ,s �>
Ykk` i'T }� s' :`€
No Further Investigation/No Corrective Measures.
No oral or written documentation of releases were found. The container has an internal inspection every 6
months. No evidence of release was observed during any site visits.
Phase III ,activities:
1) Confirm unit location with GPS.
April 2011
DEQ-CFW 00046161

DUPONT — FAYETTEVILLE WORKS - SWMU PRIORITIZATION WORKSHEET
AOC A — Railroad Unloading Area
Description: This area consists of an outdoor railcar unloading area. Raw materials used in the Butacitet.
manufacturing process [Polyvinyl alcohol (PVA), butyraldehyde (BA), and plasticizer 3GO] are unloaded to
storage facilities. There are two main areas. The first area is located adjacent to the Butacite@)
manufacturing building. PVA is unloaded here through the use of hoses connected to the bottom of the rail
cars. The second area is approximately 200 feet east of the first. BA and 3GO are unloaded here by
pumping from the to of the railcars. This area has been in,OE ration since 1972.
M111 Win
Low. Butyraldehyde is the only potential flammable material handled in this area. The butyraldehyde is
transferred from the rail cars to the Butyraldehyde Storage Tank. The Storage Tank has a nitrogen blanket
maintained to prevent the headspace from entering the flammability limit for butyraidehyde and oxygen.
During unloading, the containers and the Storage Tank are coupled with a common vent line so that the
displaced headspace (nitrogen) in the Storage Tank is vented to the delivery container, which prevents
oxygen from entering the container. Both railcars and tank trucks are grounded before they are unloaded.
Low, airborne particles, either PVA or PVB, have been observed in the nearby stormwater drainage ditches:
however, none of the materials handled in this area contain hazardous constituents or other constituents of
concern,
flm��V MINI 111
Low. None of the materials handled in this area contain hazardous constituents or other constituents o
concern.
go
Low, None of the materials handled in this area contain hazardous constituents or other constituents of
concern. The first unloading area (where PVA is unloaded) consists of a concrete pad that has a drain
system connected to the Process Sewer System. The second unloading area (where BA and plasticizer
3GO are unloaded) consists of a pad that contains drains connected to the stormwater drainage system. The
drains are equipped with valves that are normally closed. Airborne particles, either PVA or PVB, have been
observed in the nearby stormwater drainage ditches.
R,.
...........
NONE AWWWWRINNO
Low. Airborne particles, either PVA or PVB, have been observed in the nearby stormwater drainage ditches;
however, none of the materials handled in this area contain hazardous constituents or other constituents of
concern. The first unloading area (where PVA is unloaded) consists of a concrete pad that has a drain
system connected to the Process Sewer System. The second unloading area (where BA and plasticizer
3GO are unloaded) consists of a pad that contains drains connected to the stormwater drainage system. The
drains are equipped with valves that are normally closed.
M
M aM
VMS -
INS
No Further Investigation/No Corrective Measures.
Airborne particles, either PVA or PVB, have been observed in the nearby stormwater drainage ditches;
however, none of the materials handled in this area contain hazardous constituents or other constituents of
concern, No evidence of any other releases was observed during any site visits.
Phase III Activities:
1) Confirm area location with GPS.
April 2011
DEQ-CFW-00046162

El
AOC B — Former Construction Gasoline/Diesel UST Area
Description: This area consisted of two underground storage tanks that contained gasoline and diesel used
by plant vehicles. The tanks were installed in 1969 and removed in 1990. Analysis of soil samples taken
from the excavation showed no detectable Total Petroleum Hydrocarbons. The excavated areas were
backfilled after tank removal and is now an unused, 2ravel area.
Low. No detections of flammable constituents during the tank removal and the USTs have been taken out of
Low, No detections of flammable constituents during the tank removal and th -'USTs have been ta"'ken7ou"t of
Low, No detections of flammable constituents during the tank removal and the USTs have been taken out of
service, During removal, samples were collected of the surrounding soil to ascertain any contamination,
Analysis of soil samples taken from the excavation showed no detectable Total Petroleum Hydrocarbons.
Information regarding the tanks' removal and soil sampling analytical results was submitted to Mr. Mick J.
Noland, P.E., Fayetteville Regional Supervisor, NC-DEHNR Division of Environmental Management, on
August 22, 1990. In a letter from Mr. Mick J. Noland, P.E., NC-DEHNR DEM, to Mr. James F. Wallwork,
DuPont, dated August 27, 1990, it was stated that a review of the soil samples lab results indicated that no
additional soil excavation and removal was required.
Low. No detections of flammable constituents during the tank removal and the USTs have been taken out of
service, During removal, samples were collected of the surrounding soil to ascertain any contamination.
Analysis of soil samples taken from the excavation showed no detectable Total Petroleum Hydrocarbons,
Information regarding the tanks' removal and soil sampling analytical results was submitted to Mr, Mick J,
Noland, P,E., Fayetteville Regional Supervisor, NC-DEHNR Division of Environmental Management, on
August 22, 1990. In a letter from Mr. Mick J. Noland, P.E., NC-DEHNR DEM, to Mr. James F, Wallwork,
DuPont, dated August 27, 1990, it was stated that a review of the soil samples lab results indicated that no
additional soil excavation and removal was required. This correspondence and sample results are included
as Appendix C.
No Further Investigation/No Corrective Measures,
No reported releases from this unit No evidence of any other releases was observed during removal of the
USTs and soil data confirmed a clean closure.
Phase III Activities:
1) Confirm area location with GPS,
April 2011
OEQ-CFVV_00046163

-------------------
DUPONT -- FAYETTEVILLE WORKS - SWMU PRIORITIZATION WORKSHEET
AOC C — Former Ag Products Gasoline/Diesel € ST Area
Description. This area consisted of three underground storage tanks that contained gasoline and diesel (#2
fuel oil) used in association with the agricultural Products test farm area. The tanks were installed in 1977
and removed in 1989. The excavated areas were backfilled after the tanks were removed and the area is
now an unused, rasa covered area.
NOW
Low. No detections of flammable constituents during the1999CS investigation and the USTs have been
taken out of service,
t' s
Loam. No detections above background or detection limits during the 1999 CS investigation and the this
have been taken out of service.
Low. No detections of flammable constituents during the 1999 CS investigation and the ibis have been
taken out of service,
Low. No detections of flammable constituents during the 1999 CS investigation and the USTs have been
taken out of service. When the tanks were removed in 1989, the tanks were inspected for signs of leaks and
none were found by the fuel company that removed the tanks. The tank pits were also examined for signs of
leakage and none was found. However, one sample from the 1999 CS investigation had a TPH detection
greater than 10 ppm, which is the level for clean closure.
ME
Lour. No detections of flammable constituents during the 1999 CS investigation and the USTs have been
taken out of service. When the tanks were removed in 1909, the tanks were inspected for signs of leaks and
none were found by the fuel company that removed the tanks. The tank pits were also examined for signs of
leakage and none was found,
>sz a>v
Insufficient Data.
No reported releases from this unit and no evidence of any other releases was observed during removal of
the USTs. Sail data confirmed no detections of hazardous constituents; however, one sail analytical result
was above the 10 ppm level for TPH. As NCDENR representatives requested that occurrences of TPH at the
site be further investigated, confirmation sampling of .sail in AOC C will be conducted during the Phase Ill RFl
to deterrnine current concentrations of TPH in the area,
Phase III Activities:
1) Confirm area location with CPS,
2) Confirmatory soil sampling for TPH,
April 2011
DEQ-CFW 00046164

DUPONT — FAYETTEVILLE WORKS - SWMU PRIORITIZATION WORKSHEET-
AOC D ® Nafion@) Caustic Release Area
Description: There was a release of dilute potassium hydroxide (KOH) on March 28, 1995. The ground
surface surrounding the hydrolysis wastewater sump (approximately 15 ft. in each direction) was affected.
The area was remediated the I't week in,April, 1995. ___
Low. No flammable materials are associated with this release of dilute KOH in water with trace amounts of
dimethylsulfoxide (DIVISO). No hazardous constituents are associated with this waste.
Low. No hazardous constituents are associated with this waste.
Low. No hazardous constituents are associated with this waste and the release was directly to the
subsurface soil.
m M
01fflME
Loom.
Edo hazardous constituents are associated with this waste aid the release was directly to the
subsurface soil. An underground line corroded and released a dilute aqueous solution of potassium
hydroxide. Following the release, the soil's pH measured at 12.6 SU. The soil was remediated in situ using
acetic acid. The neutralized soil following the acid addition was measured with a pH of 4,7 SU,
<1111 NINE Ira, P,
Low. No hazardous constituents are associated with this waste and the release was directly to the
subsurface soil. An underground line corroded and released a dilute aqueous solution of potassium
hydroxide, Following the release, the soil's pH measured at 12.6 SU. The soil was remediated in situ using
acetic acid. The neutralized soil following the acid addition was measured with a pH of 4.7 SU,
is
No Further Investigation/No Corrective Measures.
Release immediately remediated via neutralization with acetic acid. No further action necessary.
Phase III Activities:
1) Confirm area location with CPS,
April 2011
DEQ-CFW-00046165

DUPONT — FAYETTEVILLE WORKS _ SWMU PRIORITIZATION WORKSHEET
AOC E — Butaclte@ Ethylene Glycol Release Area
Description: There was a release of ethylene glycol that was discovered in December 2005 An unknown
quantity was released prior to discovery when an underground line corroded or failed and released a 30%
ethylene glycol aqueous solution. Following the discovery of the release, the failed line was deinventoried of
ethylene glycol. The sail between the Administration Building, the Butacite(D Office Building, the Butacite®
Laborator , and the Butacite® Maintenance ShoE was affected,
_. .,;. , .. ., ,t;;;r».�..:�, x.� £a.. £'b a.
Low. Flammable constituents are not associated with this area.
> . ::: ... n€� � 111411 111
Low, When released to soil, ethylene glycol is not expected to evaporate and is readily biodegradable, In
the air, it is degraded by reaction with photochemically ,produced hydroxyl radicals and has a half life of 1 --
10 days,
t{ri
Low. When released to soil, ethylene glycol is readily biodegradable.
�g3
gg
Moderate. When released to sail, ethylene glycol may leach into groundwater; however, it is readily
biodegradable. Groundwater samples collected from five nearby monitoring wells (SMW-06, FTA-02, MW-
1 s, NAF-06B and NAF-11 B) and were sampled for ethylene glycol in 2006 as part of the Phase I RFI.
Analytical results did not indicate the presence of ethylene glycol above method detection limits in any of the
samples. 3;
Low. When released to soil, ethylene glycol may leach into groundwater and be transported to surface water;
however, it is readily biodegradable iR water and has a half-life of 1 -- 10 days. Ethylene glycol is not
expected to bioaccumolate. Groundwater samples collected from five nearby monitoring wells (SMW-06,
FTA-02, MW-16, NAF-06B and NAF-11 B) and were sampled for ethylene glycol in 2006 as part of the Phase
I RFI. Analytical results did not indicate the presence of ethylene glycol above method detection limits in any
of the samples.
r
Insufficient Data.
Although ethylene glycol is readily biodegradable and is not expected to be present in the shallow
groundwater; no data has been collected from the area immediately surrounding the pipe runs. Additional
samples are needed since an unknown quantity of ethylene glycol was released.
Phase III Activities;
1) Confirm area boundaries with CPS.
2) Determine if a clay layer is present in the area that may affect shallow groundwater flaw
direction..
3) Locate saturated conditions along the pipe runs and sample water if present.
a
April 2011
DEQ-CFW 00046166

DUPONT — FAYETTEVIL.L.E WORK m S 'M U PRIORITIZATION WC?F KSHEET
A,OC F — Molecular Sieve Release ,Area
Description. There was a release of waste molecular sieges in March 2007, The ground in the construction
lay -down area was affected, The spent molecular sieves are made of sodium aluminosilicate and contain
sodium fluoride, sodium carbonate, sodium acetate, fluorocarbons, and fluorocarbon salts. Because the
spent sieves can contain acid fluorides, they are coded with the D003 hazardous waste code for reactivit
17VMS.< ,'g'. 1111111
Low. No flammable constituents were handled in this area.
Lora. Sieves were placed on the ground after being washed. The addition of water to the spent sieves
neutralized the acid fluorides, therefore washed sieves would not be a D003 livaste, but rather a non-
hazardous solid waste,
•0:
Law. Sieves were placed on the ground after being washed and then shoveled into a waste container for off -
site site disposal. The addition of water to the spent sieves neutralized the acid fluorides, therefore washed
sieves would not be a D003 waste, but rather a non -hazardous solid waste.
p
Low. Sieves were placed on the ground after being washed and then shoveled into a waste container for off -
site disposal. This practice was stopped in 2007. The addition of water to the spent sieves neutralized the
acid fluorides, therefore washed sieves would not be a D003 waste; but rather a non -hazardous solid waste,
.. :.,. .., .«... ?? s`Yksx�xjC �? i# a .s:k ..,a> a ....
Low, Sieves were placed on the ground after being washed and then shoveled into a waste container for off -
site disposal. The addition of water to the spent sieves neutralizes the acid fluorides, therefore washed
sieves would not be a D003 waste, but rather a non -hazardous solid waste. This practice was stopped in
2007,
,
.. . .,,.. „<<.
No Further Investigation/No Corrective Measures.
Practice of placing sieves on the ground after washing has been stopped. The sieves are now placed in
containers at the point of generation, and then stored in the permitted RCRA Container Storage Area. No
further action necessary,
Phase III Activities:
1) Confirm unit location with (BPS.
April ?011
DEQ-CFW 00046167

H
DUPONT m FAYETTEVILLEWORKS - SWMU PRIORITIZATION WfiRKSHEET
AOO O m Former Fire Training Area
Description: The Former Fire Training Area consisted of a 3 foot by 3 foot metal pan, which was located on
the ground and surrounded by a sail and gravel bean. The total berrned area was approximately 15 feet by
15 feet. Combustible materials (non process materials) were placed in the metal pan and diesel fuel was
used to start the combustion process. Trainees would then practice extinguishing the fires. The fire training
area was closed by removing the metal fire pan and pushing the gravel berms into the interior of the training
area.
Low, Benzene, ethylbenzene, toluene, and xylenes (total) were detected above the PQL values. ' Total
constituents were present at a concentration less than 1% in the soil. These soils were removed wring
construction activities at the site. Confirmatory sampling did not indicate the presence of volatile organic
constituents above the MDL.
.;;."� . r ;; -01,01
�. tk . � ^. 'n£'
zsk£i lk=tl ; t ,1. ��"It I�1�S��. �4<I
Low. Benzene, ethylbenzene, toluene, and xylenes (total) were detected above the PQL values. The
constituents were below Regional Screening Levels (RSLs) for industrial soil concentrations. The soils were
removed during construction activities at the site. Confirmatory sampling did not indicate the presence of
volatile organic constituents above the MDL
.. .;.: .;,`x�'µsx .>. ^;»^,,.<> ,..y:.Eo.....:,z�<,tz,}, a :..,.... > .a... k., a #xi,t'4v, .<;'z ''?z .z <�:••^o
Low, Benzene, ethylbenzenes, toluene, and xylenes (total) were detected above the PQL values. A majority
of the impacted soil was removed during excavation. A limited area of soil with elevated TPH concentrations
remains at depth (> I I feet bgs). Confirmatory sampling did not indicate the presence of volatile organic
constituents above the MDL.
['1Mu2cient Data. For the Phase I RFI, three piezorneters (FTA-01 through FTA-03) were installed in the
vicinity of the Former Fire Training Area to investigate the potential impacts to the shallow groundwater.
Lead, chromium and nickel were detected above MDLs in FTA-01, the up -gradient well. Chromium and
nickel were also detected in the dawn -gradient wells (FTA-02 and FTA-03). No organic constituents were
detected above MDLs in any of the three wells. The detected concentrations were attributed to naturally
occurring background conditions and the recommendation was made that additional groundwater samples
should be collected to confirm these results.
Based on the recommendations from the Phase I RFI, additional groundwater samples were collected as part
of the Supplemental Phase I P,FI in 2003, Samples were collected from FTA-01 through FTA-03 and
sampled for VOCs, PAHs, TPH-DRO, lead, chromium and nickel. Only one inorganic constituent, lead, was
detected above the MDL. No other constituents were detected above the MDLs in the groundwater samples;
however, the MDL for the TPH-DRO analyses were slightly elevated dues to the presence of sediment in the
samples
Low. The area is relatively flat terrain and does not promote runoff. The nearest surface water is
approximately 1900 feet from this area,
,::,..... ._.::.. .. ..:::.. ....
Insufficient Data.
Based on previous sampling, unlikely that the shallow groundwater has been affected; however, the MDL for
the TPH-DRO analyses were elevated. As NCDENR representatives requested that occurrences of TPFI at
the site be further investigated, confirmation sampling of the groundwater in wells near AOG C will be
conducted during the Phase III RFI to determine current concentrations of TPH in the area:
Phase III Activities:
1) Confirm area location with CPS.
2) Confirm the previews TPH-DISC} groundwater results.
April 2011
DEQ-CFW 00046168

................... .... ............................
.......................................... ... .................................................................................
........................
A OC Site Wide Groundwater GW
Description- Groundwater was evaluated holistically as one AOC. Although groundwater was also
evaluated as part of each unit, a holistic approach allows for making determinations with respect to current
site conditions at perimeter boundaries and potential exposure points. A total of 45 groundwater monitoring
wells and 26 piezometers have been installed at the site during previous investigation efforts, In addition, 2
water supply wells exist that have been used throughout the site's history to provide potable, process, and
domestic water supplies for facility needs; however, these wells have been disconnected from the site's
drinking water sXstem, M7
Low, Constituents detected in soils were present in concentrations less than 1%: therefore flammable
constituents are not expected to be present in groundwater at concentrations greater than 1 %.
Low. Groundwater is generally found at depths greater than 16 feet below ground surface; therefore
exposure via this pathway is not expected. However, several VOCs were detected within 100 feet of
occupied buildings. These detected concentrations were compared to conservative residential EPA
screening levels listed in Table 5 of EPA's draft vapor intrusion guidance and the following VOCs had
detections above these levels: bromoform, carbon tetrachloride, methylene chloride, dichlorodifluoromethane,
tetrachloroethylene, trichloroethylene. Currently, carbon tetrachloride, d ich lorod ifl uoro methane, methylene
chloride and tetrachloroethylene are used in the Nafion®R area, As a result, the use of occupationally -based
endpoints is appropriate for these VOCs, The detections of these compounds are below occupational
standards. For the potentially "orphaned" chemicals, both bromoform and trichloroethene were detected
once in June 2005 above conservative residential EPA screening levels in one location (NAF-080). Neither
was detected in the October 2005 and June 2006 sampling events in the same location. Bromoform has not
been detected in other locations in the area and trichloroethene has not been detected above conservative
EPA screenin levels I in other locations in the area.
Now"MME11=11M MMMMMIUMM
Low, Groundwater is generally found at depths greater than 16 feet below ground surface; therefore
exposure via this pathway is not expected. Additionally, the site purchases and receives its potable water
from the Bladen County Water Authority. The two on -site domestic water wells have been disconnected from
the site's drinking water s em, but the wells have not yet been closed.
Iffill"I" 01, ANTIMM "i'M 1111111"1", 111,1111 �11111 I
Insufficient Data. An aerially limited perched groundwater zone exists above the clay layer underlying a
majority of the site. The presence of this perched zone appears to be the result of seepage of water through
the bottom of the north/south sediment basins accumulating on the clay layer. The perched zone flows in a
radial pattern from a hydrologic high in the vicinity of the on -site north/south sediment basins. The perched
zone was encountered from approximately six feet bgs in the vicinity of the north/south sediment basins to a
depth of approximately 20 feet bgs along the edges of the perched zone to the west of the sediment basins.
A separate regional water table aquifer was encountered approximately 50 feet below the ground surface and
below the clay layer that underlies a majority of the manufacturing area. The extent of the clay layer
southwest of SWMU 8 is
NO unknown,
...........
1.NM 11 011 1"11M, Low. It is expected that shallow groundwater discharges into the Cape Fear River which is located
approximately 1900 feet from the manufacturing area; however, samples collected in 2006 from five
perimeter wells adjacent to the Cape Fear River (LTW-01 through LTW-05) did not have any detections of
constituents above NC 2B criteria exceet for iron,
h.g", go
717,
Insufficient Data.
The extent of the clay layer southwest of SWMU 8 is unknown. Also, the potential for vapor intrusion to be
complete for two constituents detected near an occupied building exists, I
Phase III Activities:
1) Conduct site -wide groundwater sampling to support refinement of the site conceptual model.
2) Confirm the presence of a clay layer to the southwest of SWMU 8 and whether perched water
Is present.
2
April 2011
DEQ-CFW-00046169

Photo No, Dam;
Direct rep
Taken -
SOUTHWEST
DekN on:
SgmUI-
HAZARDOUS WASTE
CONTAINER
STORAGE AREA
DEQ CFW-0 00 6170

Photographic Log
is 4m" PAGE 2 of 31
DEQ-CFW 00046171

A
El
Photographic Log
4:P :0NX PAGE of 3l
Photo No, }ate.
N/A
Direction Photo
Taken:
A
Description -
THIS UNIT IS LOCATED IN AN AREA RESTRICTED FROM ELECTRICAL EQUIPMENT
SWM U 2D -- USAGE DUE TO THE EXPLOSIVE NATURE CE THE AREA, THEREFORE NO
HAZARDOUS WASTE PHOTOGRAPH WAS OBTAINED.
SATELLITE
ACCUMULATION
AREA - NAFJON7D
NIMF REACTOR
ROOM
DEQ-CFW 00046172

Photographic Log
4LO NJ PAGE 4 of 31
DEQ-CFW 00046173

m
Photographic Log
4w,- PAGE 5 of 31
DEQ-CFW 00046174

Log
OEQ-CFVV_00046175

11
Photographic Log
(M. PAGE 7 of 31
DEQ-CFW 00046176

Photographic Log
(C:P 0 aN PAGE 9 of 31
DEQ-CFW 00046178

Photographic Log
EO NJ PAGE 10 oaf 1
DEQ-CFW 00046179

Ej
Photographic Log
(CEU:Nl� SAGE 11 of l
DEQ-CFW 00046180

El
Photographic Log
PAGE 12 oaf 31
b�
DEQ-CFW 00046181

Photographic Log
PAGE 13 of 31
DEQ-CFW 00046182

L r
Photo No. Date:
27
Direction Photo
Taken:
Description:
SWMU 14 B
AREA SEPTIC TANK
DEQ-CFW 00046183

L n.
(q) -- ffm
'fil
Photo No. Dated
29
Direction Photo
Taken:
Description:
SWMU 14 D
AREA SEPTIC TANK
Photo No. Date:
30
Direction Photo
Taken:
Description:
SWMU 14 E
AREA SEPTIC TANK
DEQ-CFW 00046184

El
11
Photo No. Date:
31
Direction Photo
Taken:
Description:
SWMU 14 F
AREA SEPTIC TANK
Photo No. Dates
32
Direction Photo
Taken:
Description.
SWMU 14 G
AREA SEPTIC TANK
DEQ-CFW 00046185

Photographic Lang
PAGE 17 cif l
a
Photo No. Date-
34
Direction Photo
Taker,
NORTH
Description:
WAS U 15B —
FORMER USED OIL
ACCUMULATION
,AREA -- D METROU�l
DEQ-CFW 00046186

Photographic Log
Im"
PA B 1 of B 1
Prato No, Date-
36
V2 7 /r,
Direction Photo
Take.
NORTH
Description.
SWMU 15D -USED
OIL ACCUMULATION
AREA - BUTACITE"'
DEQ-CFW 00046187

Photographic Log
PAGES of y1
\ 0m, �
Photo No, Dam:
37 7
Direction Photo
Taken:
SOUS
Description:
SWMU 15E- USED
0$ ACCUMULATION
AREA - &aQON®
DEQ CFW-0 00 6188

13
Photographic Log
(M., SAGE 21 of 3
DEQ-CFW 00046190

Photographic Log
Im" SAGE 24 of 3l
DEQ-CFW 00046193

Im"',
PhotoN« . Date.
.49 '!
Direction Photo
Taken: .
WEST
s£W on:
SWMU2±4-
CONSIRUCTlON
PAINT SHOP
El
DEQ CFW-0 00 619

El
Description:
SWMU 25 -- PM DF
WASTE TEFLON,:
WASTE~ CO TAMER
Li
El
DEQ-CFW 00046195

El
Description-
SWM U 27 — APFO
MANUFACTURING
AREA
H
DEQ-CFW-00046196

13
Photographic Log
Om". PAGE 28 of 31.
DEQ-CFW 00046197

Photographic Log
PA% 29 o 1
DEQ-CFW 00046198

3
Photographic Log
Im". PAGE 30 of 31
DEQ-CFW 00046199

Photographic Log
Im, PAGE 31 of 31
DEQ-CFW 00046200

APPENDIX B
HISTORICAL GROUNDWATER D
SOIL SAMPLING DETECTIONS
DEQ-CFW 00046201

Appendix Bs Table 1 Historical Site -Wide Groundwater Detections
Phase Ili RFI'+Aork Plan (Rev, 1)
DuPont Fayetteville Facility
Fayetteville, NC
'£, a
• zr<:,�,:z:. dz
:zz;;:s]f€io,
'";;., .�'. h' Y
' �s
:. ,
rE ,f�Ks t# £ . z.
16-Mar-99
MW--12S
CHLORIDE
7600
250000
NCAC 2LGW_1/10
UG/L
16-Mar-99
MW-12S
IRON
65 [J]
300
NCAC2LGW 1/10
UG/L
16-Mar-99
MW-12S
NITRATE/NITRITE NITROGEN
2390
Utz/L
16-Mar-99
MW-12S
TOTAL DISSOLVED SOLIDS
49000
500000
NCAC 2LGW 1/10
UG/L
16-Mar-99
MW-12S
TPH
680
UG/L
16-Mar-99
MW-02S
CHLORIDE
53800
250000
NCAC 2LGW 1/10
UG/L
16-Mar-99
MW-025
DIETHYLENE GLYCOL
15000 [J]
UG/L
16-Mar-99
MW-02S
IRON
18500
300
NCAC_2LGW_1/10
UG/L
16-Mar-99
MW-02S
LEAD
70
15
1 NCAC 2LGW_1/10
UG/L
16-Mar-99
MW-025
TOTAL DISSOLVED SOLIDS
170000
500000
NCAC_2LGW_1/10
UG/I.
16•Mar-99
MW-01S
CHLORIDE
21100
250000
NCAC 2LGW 1/10
UG/L
16-Mar-99
MW-015
CHLORIDE
20700
250000
NCAC 2LGW 1/10
UG/L
16-Mar-99
MW-01S •
DIETHYLENE GLYCOL
26000 [J]
UG/L
16-Mar-99
MW-01S
IRON!
7370
300
NCAC 2LGW_1/10
UG/L
16-Mar-99
-----------------
MW-01S
IRON
4390
300
NCAC2LGW1/10
UG/L
16-Mar-99
Mill-01S
NITRATE/NITRITE -NITROGEN
1520
UG/L
16-Mar-99
MW-01S
NITRATE/NITRITE NITROGEN
940
UG/L
16-Mar-99
IVlW-01S
TOTAL. DISSOLVED SOLIDS
116000
500000
NCAC 2LGW_1/10
UGJL
16-Mar-99
MW-01S
TOTAL. DISSOLVED SOLIDS
113000
500000
NCAC 2LGW 1/10
UGJL
16-Mar-99
MW-01S
TRIETHYLENE GLYCOL
68000 [JI
UGC/L
16-Mar-99
MW-05D
CHLORIDE
11600
250000
NCAC�2LGW_1/10
UG/L
16-Mar-99
MW-05D
DIETHYLENE GLYCOL
10000 [J]
UG/L
16.'Mar-99
I
MW-05D
IRON
16200
300
NCAC 2LGW_2/10
UG/L
16-Mar-99
MW-05D
LEAD
13
15
NCACm2LGW_ 1/10
UG/L
16-Mar-99
MW-05D
NICKEL
12.2
100
NCAC_2LGW_1/10
UG/L
16-Mar-99
MW-05D
NITRATE/NITRITE NITROGEN
12500
UG/L
7.6-Mar 99
MW-05D
TOTAL DISSOLVED SOLIDS
190000
500000
NCAC_21_G`JV 1/10
UG/L
16-Mar-99
mw-08S
CHLORIDE
6400
250000
NCAC _2LGW _1/10
UG/L
16-Mar-99
MW-085
CHROMIUM
7,8
10
NCAC 2LGW_1/10
UG/L
16-Mar-99
MW-08S
DIETHYLENE GLYCOL
17000 [J]
UG/L
16-Mar-99
MW-08S
IRON
1290
300
NCAC 2LGW 1/10
UG/L
16-Mar-99
MW_08S
TOTAL DISSOLVED) SOLIDS
21500 [J]
500000
NCAC_2LGW_1/10
UG/L
16-Mar-99
MW-08S
TPH
380 [J]
UG/L
16-Mar-99
MW-101)
CHLORIDE
13300
250000
NCAC 2LGW_1/10
UG/L
16-Mar-99
MW-10D
IRON
110
300
NCAC 2LGW 1/10
UG/L
16-Mar-99
IV W-10D
NITRATE/NITRITE NITROGEN
11900
UG/L
16-Mar-99
MW-10D
TOTAL- DISSOLVED SOLIDS
140000
500000
NCAC_2LGUV_1/10
UG/I-.
16-Mar-99
IVtW-10D
TPH
300 [J]
UG/L
13-Jul-99
SWMU6-03
CHROMIUM
10800
10
NCAC 2LGW_1/10
UG/L
13-Jul-99
I
SWMU6-03
IRON
1440000
300
NCAC 2LGW_1/10
UG/L
13-Jul-99
SWMU6-03
LEAD
391
15
NCAC_2LGW_1J10
UG/L
13-Jul-99
SWMU6-03
NICKEL
2290
100
NCAC_2LGW _1/10
UG/L
21-Jul-99
SWMU6-03
ACETONE
140
6000
NCAC2LGW 1/10
UG/L
21-JuI-99
SWMU6-03
ACETONITRILE
2400
UG/L
21-Jul-99
SWMU6-03
CHLORIDE
6710000
250000
NCAC 2L'zW_1a'10
UG/L
21-Jul-99
SWMU6-03
FLUORIDE
470000
2000
NCAC 2LGW_1/10
UG/L
21-Jul-99
SWMU6-03
METHANOL
77000
4000
NCAC 2LGW 1/10
UG/L
21-Jul 99
SWMU6-03
METHYLENE CHLORIDE
29000
5
NCAC 2LGW_1/10
UG/L
21-Jul-99
SWMU6-03
TPH
560
UG/L
03-Dec-02
MW-1S
CHROMIUM
14 [J]
10
NCAC_2LGW_1/10
UG/L
03-Des-02
T"AW-IS
LEAD
14,5 [J]
15
NCAC 2LGW_1/10
UG/L
03-Dec-02
MW-1S
NICKEL
8.9
100
NCAC 2LGW 1/10
UGJL
04-Dec-02
FTA-GJJ.
CHROMIUM
16.6
10
NCAC�2LGW_1/10
UG/L
04-Dec-02
FTA-01
LEAD
15.2 [J]
15
NCAC_2LGW_1/10
UG/L
04-Dec-02
FTTA-01
INICKEL
15.9
100
NCAC 2LGW_1/10
UG/L
1of21
DEQ-CFW 00046202

Appendix Be Table 1 Historical Ste -Wide Groundwater Detections
Phase III RFI Work Plan (Rev. 1)
DuPont Fayetteville Facility
Fayetteville, NC
04-Dec-02
FTA-02
CHROMIUM
7.7
10
NC,AC_2LGW_1/10
iiCa/L
04-Dec-02
FTA-02
NICKEL
21.1
100
NCAC 2LGW_1/1.0
UG/L
04-Dec-02
FTA-03
CHROMIUM
61
10 1
NCAC_2LGW_1/10
�2LGW�1/10
Ufa/L.
04-Dec-02
FTA-03
NICKEL
35a6
100
NCAC
UG/I.
05-Dec-02
NAF4
ACETONE
13 [J]
6000
NCAC 2LGW_1/10
UG/L
05-Dec-02
NAF4
EIS(2-ETHYI.HEXYL)PHTHALATE
3 (J]
3
NCAC 2LGW_1/10
UG/L
05-Dec-02
NAF4
CARBON DISULFIDE
2 (J]
700
NCAC_2LGW_1/10
UG/L
05-Dee-02
NAF4
CHLORIDE
90600
250000
NCAC_2LGW_1/10
UG/L
05-Dec-02
NAF4
FLUORIDE
3210
2000
NCAC _2LGW,-_1/10
UG/L
05-Dee-02
NAF4
METHYLENE CHLORIDE
5000
5
NCAC 2LGW_1/10
UG/L
05-Dec-02
NAF4
TRICHLOROETHENE
2 [J]
3
NCAC _2LGW_1/10
UG/L
05-Dec-02
NAF4P
ACETONE
8 [1]
6000
NCAC_2LGW_1/10
UG/L
05-Dec-02
NAF4P
METHYLENE CHLORIDE
1500
5
NCAC 2LGW_1/10
UG/L
05-Dec-02
NAF2
1,4-DIOXANE
2 [J]
3
NCAC _2LGW 1/10
UG/L
05-Dec-02
NAF2
1,4-DIOXANE
2 [J]
3
NCAC 2LGW_1/10
UG/L
05-Dec-02
NAF2
ACETONE
45 [JI
6000
NCAC 2LGW 1/10
UG/L
05-Dee-02
NAF2
ACETONE
35 [J]
6000
NCAC 2LGWm1/10
UG/L
05-Dec-02
NAF2
BENZYLALCOHOL
15 [J]
UG/L
05-Dec-02
NAF2
BENZYL ALCOHOL
11 [.i]
UG/L
05-Dec-02
NAF2
BIS(2-€THYLHEXYL)PHTHALATE
3 [J]
3
NCAC _2LGW1/10
UG/L
05-Dec-02
NAF2
CARBON DISULFIDE
5 [J]
700
NCAC_2LGW_1/10
UG/L
05-Dec-02
NAF2
CHLORIDE
332000
250000
NCAC 2LGW_1/10
UG/L
05-Dec-02 I
NAF2
CHLORIDE
325000
250000
NCAC _2LGW_1/10
UG/L
05-Dec-02
NAF2
FLUORIDE
250000
2000
NCAC 2LGW_1/10
UG/L
05-Dec-02
NAF2
FLUORIDE
230000
2000
NCACm2LGW_1/10
UG/L
05 Dec-02
NAF2
METHANOL
1900
4000
NCAC �2LGW 1/10
UG/L
05-Dec-02
NAF2
METHANOL
1200
4000
NCAC_2LGW_1/10
UG/L
05-Dec-02
NAF2
METHYLENE CHLORIDE
6700
5
NCAC2LGW_1/10
UG/L
05-Dec-02
NAF2
METHYLENE CHLORIDE
6100
5
NCAC_�21.GW_1/10
UG/L
05-Dec-02
NAF2
NAPHTHALENE
1 [J]
6
NCAC2LGW_1/10
UG/L
05-Dec-02
NAF2
PHENOL
2 [J]
30
NCAC _2LGW_1/10
UCH/L
05-Dec-02
NAF2
PHENOL
1 [J]
30
NCAC 2LGW_1/10
'2LGW_1/10
UG/L
05-Dec-()2
NAF2P
ACETONE
24
6000
NCAC
UG/L
05-Dec-02
NAF2P
CARBON DISULFIDE
5
700
NCAC �2LGWm1/10
UG/L
05-Dec-02
NAF2P
METHYL ETHYL KETONE
5 [J]
4000
NCAC_2LGW_1/10
UG/L
05-Dee-02
NAF2P
METHYLENE CHLORIDE
6000
5
NCAC 2LGW_1/10
UG/L
05-Dec-02 I
NAF3
1,4-DIOXANE
1 [J]
3
NCAC 2LGW_1/10
UG/L
05-Dee:-02
NAF3
CHLORIDE
82000
250000
NCAC_2LGW_1/10
UG/L
05-Dec-02
NAF3
FLUORIDE
12500
2000
NCAC 2LGV'd_1/10
UG/L
05-Dec-02
NAF3
METHYLENE CHLORIDE
4 [J]
5
NCAC�2LGW 1/10
UG/L
06-Dec-02
NAF1
CHLORIDE
47100
250000
NCAC 2LGW 1/10
UG/L
06-Dec-02
NAF1
CHLOROFORM
2 [J]
70
NCAC _2LGW�1/10
UG/L
09-Dec-02
MW-2S
CHROMIUM
2.3 [J]
10
NCAC._2LGW---1/10
UG/L
09-Dec-02
MW-2S
LEAD
96.2
15
NCAC 2LGW_1/10
UG/L
09-Dee-02
I+r`IW-2S
NICKEL
4.9 [.I]
100
NCAC, 2LGW 1/10
Ufa/L
09-Dec-02
mw-12S
CHROMIUM
2.3 [J]
10
NCAC�2LGa'W 1/10
UG/L
09-Dec-02
RAW-12S
NICKEL
3.8 [J]
100
NCAC 2LGW_1/10
UG/L
10-Dec-02
MW-85
CHROMIUM
171
10
NCACV2LGW_1/10
UG/L
10-D c-02
1vW-8S
CHROMIUM
155
10
NCAC 2LGW_l/10
UG/L
10-Dec-02
MW-8S
LEAD
48.6
15
NCAC 2LGW_1/10
m2LGW_1/10
UG/L
10-Dec-02
MW-8S
LEAD
47.4
15
NCAC
UG/L
10-Der.-02
MW-8S
NICKEL
20.3
100
NCAC_2LGW_1/10
UG/L
10-Dec-02
MW-8S
NICKEL
19A
100
NCAC 2LGW_1/10
UG/L
10-Dec-02
MW-10D
CHROMIUM
57.2
10
NCAC-2LGW_1/10
UG/L
10-Dec-02
MW-10D
LEAD
190
15
NCACm2LGW._1/10
Ufa/L
2of21
DEQ-CFW 00046203

Appendix B: Table I Historical Site -Wide Groundwater Detections
Phase III RFI Work Plan (Rev. 1)
DuPont Fayetteville Facility
Fayetteville, NC
10-Dec-02
MW-10D
NICKEL
18.9
100
NCAC 2LGW 1/10
UGJL
10-Dec-02
MW-5D
CHROMIUM
2.8 [J]
10
NCAC 2LGW 1/10
UG/L
10-Dec-02
MW-5D
LEAD
17,5 fJ]
1.5
NCAC_2LGW_1/10
UG/L
10-Dec-02
MW-5D
NICKEL
6.4
100
NCAC 2LGW 1/10
UG/L
27-Jan-03
NAF-01
APFO
0,0649
L)G/L
27-Jan-03
NAF-01
APFO (Trial)
0.0734
UG/L
27-Jan-03
NAF-01
PFOA
0.0623
2
NC IMAC
UG/L
28-Jan-03
mW_1S
APFO
NQ (<0.05)
UG/L
28-Jan-03
MW-15
APFO
NQ (<0.05)
LIG/L
28-Jan-03
MW-15
APFO (Trial)
NQ (<0.05)
UG/L
28-Jan-03
mw-is
APFO (Trial)
NQ (<0,05)
UG/L
28-Jan-03
FEW -IS
PFOA
NQ (<0.05)
2
NC IMAC
UG/L
28-Jan-03
mW_1S
PFOA
NQ (<0.05)
2
NC WAC
UG/L
27-Mar-03
mW-15
APFO
NQ (<0.05)
UG/L
27-Mar-03
MVV_1S
APFO (Trial)
NQ (<0,05)
UG/L
27-Mir-03 I
mW-15
PFOA
NQ (<0.05)
2
NC IMAC
UG/L
27-Mar-03
NAF-01
APFO
0.0684
UG/L
27-Mar-03
NAF-01
APFO (Trial)
0.0684
UG/L
27-Mar-03
NAF-01
PFOA
0.0657
2
NC IMAC
UG/L
2-7--Mar-03
NAF-01
APFO
0.0628
UG/L
27- ar 03
-
NAF-01
APFO (Trial)
0.0628
UG/L
27-M ar-031
NAF-01
PFOA
0.0603
2
NC IMAC
UG/L
03-Feb-04
I-S
APFO
NQ (<0.05)
UG/L
03-Feb-04
I-S
APFO (Trial)
NQ (<0,05)
UG/L
03-Feb-04
I-S
PFOA
NQ (<0,05)
2
NC IMAC
UG/L
03-Feb-04
FTA-03
LEAD
51.5
is
I NCAC 2LGW 1110
UG/L
03-Feb-04
FTA-02
LEAD
10.5 j
is
NCAC_2LGW_1/10
UG/L
03-Feb-04 I
FTA-01
LEAD
139
is
NCAC 2LGW 1/10
UG/L
F, 4
03-Feb-04
FT A
FTA-01
0 1
LEAD
136
15
NCAC 2LGW 1/10
UG/L
04-Feb-04
NA F
NAF-01
0 1
APFO
0.0619
UG/L
04-Feb -04
NA
NAF-01
F
APFO (Trial)
0.0619
UG/L
04-Feb-04
NAP-01
PFOA
0.0595
2
NC IMAC
UG/L
04-Feb-04
SWMU6-NAF-01.
CHLORIDE
48600
250000
NCAC 2LGW 1/10
UG/L
04-Feb-04
SWMU6-NAF-01
CHLORIDE
48200
250000
NCAC 2LGW 1/10
UG/L
04-Feb-04
SWMU6-NAF-01
"')_NAF_0�
CHLOROFORM
Ij
70
NCAC 2LGW 1/10
UG/L
04-Feb-04
_NAF_O,
SWMU6-NAF-01
CHLOROFORM
Ij
70
NCAC_2LGW_1/10
UG/L
04-Feb-04
NAF-02
APFO
0.303
LIG/L
04-Feb-04 I
NAF-02
APFO (Trial)
0,307
UG/L
04- Feb-04
NAF-02
PFOA
0,291
2
NC IMAC
UG/L
04- Feb-04
NAF-04
APFO
0,123
UG/L
04-Feb-04
NAF-04
APFO (Trial)
0124
UG/L
04-Feb-04
NAF-04
PFOA
0A18
2
NC IMAC
UG/L
04-Feb-04
NAP-03
APFO
1,53
UG/L
04-Feb-04 I
NAF-03
APFO (Trial)
1,53
UG/L
04-Feb-04
NAF-03
PFOA
1.47
2
NC IMAC
UG/L
04-Feb-04
SWMU6-NAF-03
1,1,1-TRICHLOROETHANE
Ij
200
NCAC 2LGW 1/10
UG/L
--0-4--Fe b 04
SWMU6-NAF-03
I,I-DICHLOROETHENE
1.1
7
NCAC _2LGW _1/10
UG/L
04-Feb-04
5WMU6-NAF-03
1,2-,DICHLOROPROPANE
Ij
0.6
NCAC_2LGW_1/10
UG/L j
0-4---F-eb-04
SWMU6-NAF-03
CHLORIDE
161000
250000
NCAC-2LGW_1/10
UG/L
04-Feb-04
SWMU6-NAF-03
CHLOROFORM
11
70
NCAC_.,2LGW,.,1/10
UG/L
04-Feb-04
SWML)6-NAF-03
FLUORIDE
7800
2000
NCAC_2LGW-1,110
UG/L
04-Feb-04
51hlMU6-NAF-03
METHYLENE CHLORIDE
160
5
NCACLGW /1.0 �1 _
UG/L
04-Feb-04
SWMU6-NAF-03
ITETRACHLOROETHYLENE
2J
03
NCAC_21-GW_1/10
UG/L.
04-Feb-04
SWMU&NAF-03
ITRANS-1,2-0ICHLOROE'FHENE
2J
100
NCAC 2LGW_1/10
UG/L_.__1
04-Feb-04
SWMU6-NAF-03TRICt
LOROETHENE
5
3
NCAC_2LGW_1/10
UG/L.
3 of 21
DEQ-CFW-00046204

Appendix B: Table I Historical Site -Wide Groundwater Detections
Phase III RI'l Work Plan (Rev. 1)
DuPont Fayetteville Facility
Fayetteville, NC
04-Feb-04
SWMU6-PZ-02
B IS(2- ETHYLH EXY Q PH THA LATE
23
3
NCAC 2LGW_1/10
04-Feb-04
SWMU6-PZ-02
CHLORIDE
184000
250000
2LGW 1/10
UG/L
04-Feb-04
SWMU6-PZ-02
DI-N-BUTYL PHTHALATE
4 J
700
_NCAC
NCACL2LGW_1/10
UG/L
04-Feb 04
SWMU6-PZ-02
FLUORIDE
10800
2000
NCAC 2LGW 1/10
UG/L
04-Feb-04
SWMU6-NAF-02
CHLORIDE
191000
250000
NCAC 2LGW_1/10
UG/L
04-Feb-04
SWMU6-NAF-02
FLUORIDE
28900
2000
NCAC_2L(� /10
UG/L
04-Feb-04
SWMU6-NAF-04
I,I-DICHL.OROETHENE
2.1
7
NCAC 2LGW_1/10
UG/L
04-Feb-04
SWMU6-NAF-04
CHLORIDE
28500
250000
NCAC_2LGW-1/10
UG/L
04-Feb-04
SWMU6-NAF-04
DICH LORODI FLUOROM ETHANE
11
1000
NCAC 2LGW_1/10
UG/L
04-Feb-04
SWMU6-NAF-04
FLUORIDE
5000
2000
NCAC 2LGW 1/10
UG/L
04-Feb-04
SWMU6-NAF-04
METHYLENE CHLORIDE
210
5
NCAC 2LGW 1/1
UG/L
04-Feb-04
SWMU6-PZ-04
IJ-DICHLOROETHENE
3J
7
NCAC 2LGW_1/10
UG/L
04-Feb-04
SWMU6-PZ-04
1,2-DICHLOROETHANE
2J
0.4
NCAC 2LGW_1/10
UG/L
04-Feb-04
SWMU6-PZ-04
ACETONE
81
6000
NCAC_2LGA 1/10
UG/L
04-Feb-04
SWMU6-PZ-04
BIS(2-ETHYLH EXYL) PFITHALATE
6 J
3
NCAC-2LGW-1/10_
UG/L
04-Feb-04
SWMU6-PZ-04
CHLORIDE
24600
250000
NCAC_2LGW_I,/10
UG/L�
04-Feb-04
SWMU6-PZ-04
DICH LO RODIFLUOROM ETHANE
17
1000
NCAC 2LGW 1/10
UG/L
04- Feb-04
SWMU6-PZ-04
DI-N-BUTYL PHTHALATE
31
700
NCAC 2LGW 1/10
UG/L
04-Feb-04 I
SWMU6-PZ-04
FLUORIDE
540
2000
NCAC_2LGW_1/10
UG/L
04-Feb-04
SWMU6-PZ-06
CHLORIDE
168000
250000
NCAC 2LGW_1/10
UG/L
04-Feb-04
SWMU6-PZ-06
CHLOROFORM
3J
70
NCAC_2LGW—I./10
UG/L
04-Feb-04
SWMU6-PZ-06
FLUORIDE
68700
2000
NCAC 2LGW 1/10.
UG/L
04-Feb-04
SWMU6-PZ-06
METHYLENE CHLORIDE
25
5
NCAC 2LGW 1/10
UG/L
11-Nov-04
NAF-05A
APFO
0.24
LIG/L
11-Nov-04
NAF-05A
APFO
0.231
UG/L
11-Nov-04
NAF-05A
APFO (Trial)
0.239
UG/L
11-Nov-04
NAF-05A
APFO (Trial)
0.228
UG/L
11-Nov-04
NAF-05A
BUTYL BENZYL PHTHALATE
20
1000
NCAC 2LGW_1/10
UG/L
11-Nov-04
NAF-05A
CHLORIDE
58800
250000
NCAC_2LGW_I./10
UG/L
11-Nov-04
NAF-05A
CHLORIDE
57900
250000
NCAC _2LGW-1/10
UG/L
11-Nov-04
NAF-05A
DICHLORODiFLUOROM ETHANE
8
.1000
NCAC_2LGW_I./10
UG/L
11-Nov�-04�NAF-�05A
FLUORIDE
65001
2000
NCAC 2LGW 1/1.0
UGA
J.1-Nov-04
NAF-05A
FLUORIDE
6400J
2000
NCAC_2LGVLI/10
UG/L
11-Nov-04
NAF-05A
PFOA
0.23
2
NCIMAC
UG/I,
11-Nov-04
NAF-05A
PFOA
0.222
2
NCIMAC
UG/L
15-Jun-05
mW-11
BROM ODICH LOROM ETHANE
0.21 J
0.6
2LGW_1/10
UG/L
15-Jun-05
MW_11
BROMOFORM
5
4
_NCAC
NCAC-2LGW—I,/10
UGA
1-5--Ju n-05
mW-11
CHLORIDE
42200
2-50000
NCAC2LGW_,!./10
UG/L
15-Jun-05
IOW-11
CHLORODIBROMOMETHANE
1,6
0.4
NCAC 2LGW_1/10
UG/L
15-Jun-05
_
mW-11
CHROMIUM
118
10
NCAC,2L.GW_1/10
UG/L
I5un-65
MJ W-11
IRON
31600
300
NCAC 2LGW 1/10
UG/L
15-Jun-05
mW-11
iSOBUTYL ALCOHOL
9.31
UG/L
15-Jun-05
mW-11
LEAD
60.7
15
NCAC: 2LGW_1/10
UG/L
15-Jun-05
MW-11.
NICKEL
153 J
100
NCAC 2LGW 1/10
UG/L
15-Jun-05
NAF-01
APFO
0,104
UG/L
15-Jun-05
NAr-01
APFO ("Trial)
0.108
UG/L
15-Jun-05
NAF-01
BROMODICH LOROM ETHANE
0,078 J
0.6
NCAC 2LGW_.1/10
UG/L
15-Jun-05
NAF-01
BROMODICH LOROM ETHANE
0.057 J
0,6
NCAC 2LGW_.1/10
UG/L
15-Jun-05
NAF-01
CHLORIDE
57700
250000
NCAC_2LGW_1/10
UG/L
15-Jun-05
NAF-01
CHLORIDE
56900
250000
NCAC 2LGVV 1/10
UG/L
15-Jun-05
NAF-01
CHLOROFORM
1.2
70
NCAC_2LGW—I,/10
UG/L
15-Jun-05
NAF-01
CHLOROFORM
0,99
70
NCAC 2LGW_1/10
UG/L
15-Jun-05
NAF-01
PFOA
0.1
2
NCIMAC
UG/L
15-Jun-05
NAF-01
PFOA(TRIAL)
0.104
UG/L
15-Jun-05
NAF-02
11,2-DICHL.OROETHANE
0.21 J
0A
NCAC 2LGW_1/10
UG/L
4 of 21
DEQ-CFW-00046205

Appendix B: Table I Historical Site -Wide Groundwater Detections
Phase III RFl Work Plan (Rev. 1)
DuPont Fayetteville Facility
Fayetteville, NC
15-jun-05
NAF-02
APFO
0,338
UG/L
15-Jun-05
NAF-02
APFO (Trial)
0,34
UG/L
15-Jun-05
NAF-02
CARBON DISULFIDE
0.34 J
700
NCAC 2LGW 1/10
UG/L
15-Jun-05
NAF-02
CHLORIDE
156000
250000
NCAC_2LGW_1_/10
UG/L
15-Jun-05
NAF-02
CHLOROFORM
0.12 J
70
NCAC._2LGW_I/'10
UG/L
15-Jun-05
NAF-02
FLUORIDE
43100
2000
NCAC 2LGW 1/10
UG/L
15-Jun-05
NAF-02
ISOBUTYL ALCOHOL
15J
UG/L
15-Jun-05
NAF-02
METHYLENE CHLORIDE
390
5
INICAC_2LGW_1/10
UG/L
15-Jun-05
NAF-02
PFOA
0325
2
NCIMAC
UG/L
15-Jun-05
NAF-02
PFOA(TRIAL)
0,327
UG/L
15-Jun-05
NAF-02
'TRANS-1,2-DICHLOROETHENE
0,12 J
100
NCAC-2LGW 1/10
UG/L
15-Jun-05
NAP-03
O'R
1,1,1-TRICHLOETHANE
0.11 J
200
NCAC_2LGW 1/10
UG/L
15-Jun-05
NAF-03
APFO
0.663
UG/L
15-Jun-05
NAF-03
APFO (Trial)
0.656
UG/L
15-Jun-05
NAF-03
CHLORIDE
19200
250000
NCAC 2LGW-1./10
UG/L
15-Jun-05
NAF-03
CHLOROFORM
0.43 J
70
NCAC_2LGW 1/10
UG/L
15-Jun-05
NAF-03
CHRYSENE
0.871
5
NCAC 2LGW 1/10
UG/L
15-Jun-05
NAF-03
FLUORIDE
3240
2000
NCAC 2LGW 1/10
UG/L
15-Jun-05
NAF-03
PFOA
0,637
2
NC IMAC
UG/L
15-Jun-05
NAF-03
PFOA(TRIAL)
0.63
UG/L
1-5--J-un-05
NAF-03
TRANS- 1,2-DICH LOROETH ENE
0,062 J
100
NCAC_2LGW_1/10
UGI/L
15-Jun-05
NAF-03
TRICHLOROETHENE
013 J
3
NCAC LGW 1/10
2
UG/L
16-Jun-05
PZ-05
CHLOROFORM
0.16J
70
NCAC_2LGW_.1/10
UG/L
16-Jun-05
PZ-06
CARBON DISULFIDE
0.88
700
NCAC=21_G�.1/10
UG/L
16-Jun-05
PZ-06
CHLORIDE
115000
250000
NCAC 21-GW_I./10
UG/L
16-Jun-05
PZ-06
CHLOROFORM
2
70
NCAC_2LGW_11/10
UG/L
16-Jun-05
PZ-06
FLUORIDE
62100
2000
NCAC_2LGW_1/10
UG/L
16-Jun-05
PZ-06
METHYLENE CHLORIDE
120
5
NCAC 2LGW 1/10
UG/L
16 Jun 05
PZ-06
TRANS-1,2-DICHLOROETHENE
0,13 j
100
NCAC 2LGW 1/10
UG/L
16�-Jun-05
NAF-07
APFO
NQ (<0,05)
UG/L
16-Jun-05
NAF-07
APFO (Trial)
NQ (<O.OS)
UG/L
16-Jun-05
NAF-07
CARBON TETRACHLORIDE
0.16J
0.3
NCAC 2LGW_1/10
UG/L
16-Jun-05
NAF-07
CHLOROFORM
5'5
70
NCAC 2LGW 1/10
UG/L
16-Jun-05
NAF-07
PFOA
NQ (<0.05)
2
NCIMAC
UG/L
16-Jun-05
NAF-07
PFOA(TRIAL)
NQ (<0.05)
UG/L
16-Jun-05
I
NAF-06
1,2-DICHLOROETHANE
0.38 J
0.4
NCAC_2LGW_1/10
UG/L
16-Jun-05
NAF-06
ANTHRACENE
1-3 J
2000
NCAC_2LGW_1/10
UG/L
16-Jun-05
NAF-06
APFO
0.262J
UG/L
16-Jun-05
NAF-06
APFO (Trial)
0,26
UG/L
16-Jun-05
NAF-06
BENZO(A)ANTHRACENE
1.4 J
0.05
NCAC 2LGW 1/10
UG/L
16-Jun-05
NAF-06
BENZO(B)FLUORANTHENE
1.3.1
0.05
NCAC 2LGW 1/10
UG/L
16-Jun-05
NAF-06
BENZO(G,H,I)PERYLENE
1.4 J
200
NCAC 2LGW 1/10
UG/L
16-Jun-05
NAF-06
BENZO(K)FLUORANTHENE
1.5 J
0.5
NCAq_2LGW_1/10
UG/L
16-Jun-05
NAF-06
BENZO(A)PYRENE
1.2J
0.005
NCAC 2LGW 1/10
UG/L
16-Jun-05
NAP-06
BUTYL BENZYL PHTHALATE
1.3 J
1000
NCAC 2LGW 1/10
UG/L
16-Jun-05
NAF-06
CARBON DISULFIDE
0.131
700
NCAC_2LGW_1/10
UG/L
16-Jun-05
NAF-06
CHLORIDE
161000
250000
NCAC 2LGW 1/10
UG/L
1 6- J u n-05
NAF-06
CHLOROFORM
0.19 J
70
NCAC_2LGW_1/10
UG/L
16-Jun-05
NAF-06
CHRYSENE
1.7 J
5
NCAC 2LGW 1/10
UG/L
16-Jun-0.5
NAF-06
DIBENZ(A,H)ANTHRACENE
1.5 J
0,005
NCAC,.,.2LGW.,.1/10
UG/L
16-Jun-05
NAF-06
DIETHYL PHTHALATE
0.9 1
6000
NCAC 2LGW 1/10
UGA
16-Jun-05
NAF-06
DI-N-BUTYL PHTHALATE
1.3 J
700
NCAC 2LGW__1/10
UG/L
16-Jun-05
NAF-06
DIPHENYL AMINE
1.2 J
UG/L
16-Jun-05
----------------
NAF-06-
I WORANTHENE
1.11
300
NCAC 2LGW_1/10
UG/L
16-Jun-05
NAF-06
... jFLUORIDE_
12500
2000
NCAC_2LGW_1/10
UG/L
5 of 21
DEQ-CFW-00046206

El
Appendix B.- Table I Historical Site -Wide Groundwater Detections
Phase III RF1 Work Plan (Rev, 1)
DuPont Fayetteville Facility
Fayetteville, NC
16-Jun-05
NAF-06
INDENO (1,2,3-CD) PYRENE
1.3 j
0.05
NCAC 2LGVV_i/10
UG/L
16-Jun-05
NAF-06
N-DIOCTYL PHTHALATE
1.3 J
100
NCAC_2LGW_1/10
UG/L
16-Jun-05
qAF-06
N-NITROSODIPHENYLAWNE
1.21
UG/L
16-Jun-05
NAF-06
PFOA
0,252 J
2
NC IMAC
UG/L
16-Jun-05
NAF-06
PFOA(TRIAL)
0.25
UG/L
16-Jun-05
NAF-06
PHENANTHRENE
Ij
200
NCAC _2LGW_1/10
UG/L
16-Jun-05
NAF-06
PYRENE
1.2 J
200
NCAC_2LGW_1/10
UG/L
16-Jun-05
NAF-06
TRANS-1,2-1)10HLOROETHENE
0.091 j
100
NCAC 2LGW 1/10
UG/L
16-Jun-05
NAF-06
TRICHLOROETFIENE
0.063 J
3
NCAC_2LGW_1/10
UG/L
16-Jun-05
NAF-10
APFO
0122
UG/L
16-Jun-05
NAF-10
APFO (Trial)
0.12
UG/L
16-Jun-05
qAF-10
CHLOROFORM
0.15 j
70
NCAC_2LGW_1/10
UG/L
16-Jun-05
NAF-10
PFOA
0,117
2
1 NCUAC
UG/L
16-Jun-05
NAF-10
PFOA(TRIAL)
0.115
UG/L
1.6-Jun-05
NAF-09
APFO
0.08
UG/L
16--Jun05
NAF-09
APFO (Trial)
0.0817
UG/L
16-Jun-05
NAF-09
CHLOROFORM
0,07 J
70
NCAC 2LGW 1/10
UG/L
16-Jun-05
NAF-09
PFOA
0.0768
2
NCIMAC
UG/1.
16-Jun-05
NAF-09
PFOA(TRIAL)
0.0785
UG/L
17-Jun-05 I
NAF-08A
1,2-DICHLOROETHANE
3
0.4
NCAC_2LGW-1./10
UG/L
17-Jun-05
NAF-08A
APFO
0,0721
UG/L
17-Jun-05
NAF-08A
APFO (Trial)
0.0709
UG/L
17-Ju n 0 5
NAF-08A
CHLORIDE
1.2500
250000
NCAC_,2LGW_1/10
UG/L
17-Jun-05
NAF-08A
PFOA
0.0693
2
NCIMAC
UG/L
17-Jun-05
NAF-08A
PFOA(TRIAL)
0.0681
UG/L
I __
7-Jun-05
PZ-04
I,I-DICHLOROETHANE
0.27 J
6
NCAC 21..GA 3/10
UG/L
17-Jun-05
PZ-04
1,2-DICHLOROBENZENE
0,2 J
20
NCAC 2LGW_1/10
UG/L
17-Jun-05
PZ-04
1,2-DICHLOROETHANE
0.73
0A
NCAC 2LGW 1/10
UG/L
17-Jun-05
PZ-04
1,4-DICHLOROBENZENE
0.46 J
6
NCAC 2LGW 1/10
UG/L
17-Jun-05
PZ-04
CARBON DISULFIDE
0.44 J
700
NCAC 2LGW 1/10
UG/L
17-Jun-05
PZ-04
CIILORIDE
13600
250000
NCAC 2LGW 1/10
UG/L
17-Jun-05
PZ-04
CHLOROSENZENE
0,35 J
50
NCAC 2LGW 1/10
UG/L
17-Jun-05
PZ-04
CHLOROFORM
0.1 j
70
NC C GW_1/10
UG/L
17-Jun-05
PZ-04
ISOBUTYL ALCOHOL
11 J
UG/L
17-Jun-05
PZ-04
TRANS-1,2-DICHLOROETHENE
0.12 J
100
NCAC 2LGW_1/10
UG/L
17-Jun-05
PZ-04
TRICHLORCETHENE
0A1 j
3
NCAC 2LGW 1/10
UG/L
17-Jun-05
NAF-04
I,I-DICHLOROETHANE
0.089 j
6
NCAC 2LGW 1/10
UG/L
17-Jun-05 I
NAF-04
I,I-DICHLOROETHENE
0,48 J
7
NCAC 2LGW 1/10
UG/L
17-Jun-05
NAF-04
1,2-DICHLOROETHANE
0,13 J
0A
NCAC 2LGW 1/10
UG/L
17-Jun-05
NAF-04
APFO
0.0934
UG/L
17-Jun-05
NAF-04
APFO (Trial)
0,0929
UG/L
17-Jun-05
NAF-04
CARBON DISULFIDE
1.2
700
NC
UG/L
J.7-Jun-05
NAF-04
CHLORIDE
37400
250000
NCAC 2LGW 1/10
UG/L.
17-Jun-05
-77-Jun-05
NAF.-04
CHLOROFORM
0.97
70
NCAC-2LGW-1/10
UG/L
NAF-04
FLUORIDE
2390
2000
NCAC 2LGW_1/10
UG/L
17-Jun-05
NAF-04
METHYLENE CHLORIDE
880
5
NCAC 2LGW 1/10
UG/L
17-Jun-05
NAF-04
PFCA
0,0897
2
NCIMAC
UG/L
17-Jun-05
NAF-04
PFOA(TRIAL)
0,0892
UG/L
17-Jun-05
NAF-04
TRANS-1,2-DICHLOROETHENE
0.39.)
100
NCAC_2LGW_1/10
UG/L
17.-Jun-05
JAF-04
TRICHLORCETHENE
0.63
3
NCAC 2LGW 1/10
UG/L
20-Jun-05
MW-25
APFO
NQ (<0.05)
UG/L
20-Jun-05
MW-2S
APFO (Trial)
NQ(<0.05}
UG/L
20-Jun- 5
MVV-25
IPFOA
NQ (<O.05)
2
NCIMAC
UG/L
20-Jun-05
MW-2s
IPFOA(TRIAL)
NQ (<0.05)
UG/I..
20-Jun-05
Pi W-Is
JAPFO
NQ (<0.05)
UG/L
6 of 21
DEQ-CFW-00046207

Appendix B. Table 1 Historical Site -Wide Groundwater Detections
Phase III RFi Work Plan (Rev. 1)
[DuPont Fayetteville Facility
Fayetteville, NC
20-Jun-05
MW-15
APFO (Trial)
NQ (<0.05)
UG/L
20-Jun-05
MW-IS
PFOA
NQ (<0.05)
2
NC IMAC
UG/L
20-Jun-05
PJM-1S
PFOA(TRIAL)
NO (<0.05)
UG/L
20-Jun-05
MVV-5D
APFO
NQ (<0,05)
UG/L
20-Jun-05
MW-5D
APFO
NQ (<0.05)
UG/L
20-Jun-05
rMtW-5D
APFO (Trial)
NO (<0,05)
UG/L
20-Jun-05
W-51)
APFO (Trial)
NCI (<0.05)
UG/L
20-Jura-05
MW-5D
PFOA
NQ (<0.05)
2
NC IMAC
UG/L
20-Jun-05
MW-5D
PFOA
NQ (<0.05)
2
NC IMAC
UG/L
20-Jun-05
Iv W-5D
PFOA(TRIAL)
NO (<0:05)
UG/L
20-Jun-05
MVV-5D
PFOA(TRIAL)
NQ (<0.05)
UG/L
21-Jun-05
PZ-03
CHLORIDE
3840
250000
NCAC 2LGW _1/10
UG/L
21-Jun-05
PZ-03
DICHLORODIFLUOROiVIETHAiNE
0,12 J
1000
NCAC 2LGW 1/10
UG/L
21-Jun-05
PZ-03
FLUORIDE
200
2000
NCAC_2LGW_1/10
UG/I..
21-Jun-05
PZ-03
META -AND PARA-XYLENE
0.16J
UG/I.
21-Jun-05
PZ-03
TOLUENE
0.24J
600
NCAC 2LGW 1/10
UG/L
21-.Iun 05
PZ-03
TRICHLOROETHENE
0.065 J
0
NCAC2LGW 1/10
UG/L
21-Jun-05
PZ 03
XYLENES
0.181
500
NCACm2LGW_1/10
�2LGW
UG/I
21-Jun-05
NAF-08B
1,1-DICHLOROETHENE
9.1 J
7
NCAC _1/10
UG/L
21-Jun-05
NAF-08B
1,2-DiCHLOROBENZENE
13
20
NCAC 2LGW 1/10
UG/L
21-1un-05
NAF-08B
1,3-DICHLOROBENZENE
31
200
NCAC 2LGW__1/10
UG/L
21-Jun-05
NAF-08B
1,4-DICHLOROBENZENE
30
f
NCAC�2LGWw1/10
UG/L
21-Jun-05
NAF-08B
ACETONE
32J
6000
NCAC_2LGW_1/l0
UG/L
21-Jun-05 I
NAF-08B
BENZENE
2.1 J
1
NCAC 2LGW 1/10
UG/L
21-Jun 05
NAF-08B
BROMOFORM
2.1
4
NCAC m2LGW _1/10
UG/L
21-Jun-05
NAF-08B
CARBON DISULFIDE
101
700
NCAC_2LGW_1/10
UG/L
21-.Jun-05
NAF-08B
CARBON TETRACHLORIDE
6.7 J
0.3
NCAC 2LGW 1/10
UG/L
21-Jun-05
NAF-08B
CHLOROBENZENE
8,91
50
NCAC 2LGW 1/10
UG/L
21-Jun-05
NAF-08B
CHLOROPRENE
6.3 J
UG/L
21-Jun-05
NAF-08B
DICHLORODIFLUOROMETHANE
33
1000
!NCAC 2LGW_1/10
UG/L
21-Jun-05
NAF-08B
ETHYL METHACRYLATE
2.9 J
UG/L
21-Jun-05
NAF-08B
ETHYLBENZENE
14
600
NCAC 2LGW 1/10
UG/L
21-Jun-05
NAF-08B
META- AND PARA-XYLENE
35
UG/L
21-dun-05
NAF-08B
ORTHO-XYLENE
6.4 J
I
UG/L
21-Jun-05
NAP-08B
STYRENE
5.6 J
70
NCAC: 2LGW 1/10
UG/L
21-Jun-05
NAF-08B
TETRACHLOROETHYLENE
55
0.7
NCAC,_2LGW_1/10
UG/L
21.-Jun-05
NAF-08B
TOLUENE
8.11
600
NCAC 2LGW 1/10
UG/L
21-Jun-05
NAP-08B
TRANS-I,2-DICHLOROETI•IENE
81
100
NCnACW2LGW_1./1.0
UG/L
21-Jun-05
NAF-08B
TRICHLOROETHENE
15
3
NCAC 2LGW 1/10
UG/L
21-Jun-05
NAF-08B
TRICHLOROFLUOROMETHANE
17
2000
NCAC_2LGW_1/10
UG/L
21-Jun-05
NAF-08B
XYLENES
44
500
NCAC 2LGW_1/10
UG/L
29-Jun-05
PZ-03
BIS(2-ETHYLHEXYL)PHTHALATE
1.3 J
3
NCAC_2LGW_i/10
UG/L
29-Ju❑-05
NAF-08B
BIS(2-ETHYLHEXYL)PHTHALATE
2 J
3
NCAC_2LGW_1/10
UG/L
05 JuI-05
NAF 11A
ACETONE
3,3
6000
NCAC..-2LGW._1/10
UG/L
05-Jul-05
NAF-11A
APFO
NQ (<0,05)
UG/L
NAF
APFO (Trl)
UG/L05-JuI-05
05-Juk05
NAF-11A
CH LORODISRO[vM0"M ETHANE
0.23 J
0.4
NCAC 2LGW_1/10
P2LGW
UG/L
05-JuI-05
€ AF-11A
CHLOROFORM
0.58
70
NCAC 1/10
UG/L
05-Ju1-05
NAF-11A
METHYLENE BROMIDE
0.181
UG/L
05-Jul-05
NAF-11A
IPFOA
NO (<0.05)
2
NC IMAC
UG/L
05-Jul-05
NAF-11A
PFOA(TRIAL)
NQ(<0.05)
UG/L
06-5ep-05
SMW"ill
APFO
NQ (<0.0073)
UG/L
7of21
DEQ-CFW 00046208

Appendix B- Table 1 Historical Site -Wide Groundwater Detections
Phase III RFI Work Plan (Rev. 1)
DuPont Fayetteville Facility
Fayetteville, NC
06-Sap-05
Slv W-02
APFO
NQ (<0.0073)
UG/L
06-Sep-05
SMW-02
APFO (Trial)
NQ (<0.0073)
UG/L
06-Sep-05
SMW-02
APFO (Trial)
NQ (<0.0073)
UG/L
06-Sep-05
SM W-02
PFOA
NO (<0,0073)
2
NC lMAC
UG/L
06-Sep-05
SMW-02
PFOA
NO (<0.0073)
2:
NC IMAC
UG/L
06-Sep-05
SMW-02
PFOA(TRIAL)
NQ (<0.0073)
UG/L
06-Sep-05
SMW-02
PFOA(TRIAL)
NO (<0.0073)
UG/L
13-Oct-05
NAF-05A
1,2-DICHLOROBENZENE
0.13J
20
NCAC 2LGW 1/10
UG/L
13-Oct-05
NAF-05A
1,2-DICHI-OROETHANE
0.22 J
0.4
NCAC 2LGW_1/10
UG/ L
13-Oct-05
NAF-05A
APFO
0.187
LEG/L
13-Oct-05 I
NAF-05A
APFO (Trial)
0.191
UG/L
13-Oct-05
NAF-05A
CHLORIDE
39800
250000
NCAC_2LGW 1/10
UG/L
13-Oct-05
NAF-05A
CHLOROFORM
0,86
70
NCAC 2LGW_1/10
UG/L
1.3-Oct-05
NAF-05A
CIS-1,2 DICHLOROETHENE
13
70
NCACm21LGW_1/10
UG/L
13-Oct-05
NAF-05A
DICHLORODIFLUOROM ETHANE
16
1000
NCAC _2LGW_1/10
UG/L
13-Oct-05
NAF-05A
FLUORIDE
3250
2000
NCAC 2LGW 1./10
UG/L
13-Oct-05
NAF-05A
ORTHO-XYLENE
0.043 J
UG/L
13-Oct-05
NAF-05A
PFOA
0.179
2
NC IMAC
UG/I.
13-Oct-05
NAF-05A
PFOA(TRIAL)
0.183
UG/L
110ct-05
NAF-05A
TETRACHLOROETHYLENE
12
0.7
NCAC 2LG�V_1/10
�2LG
UG/L
13-Oct-05
NAF-05A
TRANS- 1,2-DICHLOROETHENE
0.26J
100
NCAC 1/10
UG/L
13-Oct-05
NAF-05A
TRICHLOROETHENE
0.57
3
NCAC .21_GVJ_.1/10
UG/L
13-Oct-05
NAF-05A
VINYL CHLORIDE
0.22 J
0,03
NCACp2LGW 1/10
UG/L
13-Oct-05
NAF-08A
1,2-DICHLOROETHANE
43
0A
NCAC�2i4aW 1/10
UG/L
13-Oct-05
NAF-08A
APFO
0.172
UG/L
13-Oct-05
NAP-08A
APFO (Trial)
0.172
UG/L
13-Oct-05
NAF-08A
CHLORIDE
7570
250000
NCAC 2LGW 1/10
UG/L
13-Oct-05
NAF-08A
DICHLORO)DIFLUOROMETHANE
1,6
1000
NCAC_21.GW 1/10
UG/L
13-Oct-05
NAF-08A
PFOA
0.165
2
NC iMAC
UG/L
1.3-Oct-05
NAF-08A
PFOA(TRIAL)
0,165
UG/L
13-Oct-05
NAF-08A
TRICHLOROETHENE
0.072 J
3
NCAC 2LGW_1./10
UG/L
13-Oct-05
NAF-08B
APFO
NO (<0.011)
UG/L
13-Oct-05
NAF-08B
APFO (Trial)
NQ (<0.011)
UG/L
13-Oct-05
NAP-088
CHLORIDE
11300
250000
NCAC_2LGW_1J10
UG/L
13-Oct-05
NAF-08B
PFOA
NQ (<0.011)
2
NC IMAC
UG/L
13-Oct-05
NAF-088
PFOA(TRIAL j
NQ (<0.011)
UG/L
13-Oct-05
NAF-08B
TOLUENE
0,14J
600
NCAC 2LGW_1/10
UG/L
13-Oct-05
NAF-09
APFO
0,121
UG/L
13-Oct-05
NAF-09
APFO (Triall
0.121
UG/L
13-Oct-05
NAF-09
CHLORIDE
20400
250000
NCAC 2LGW_1/10
UG/L
13-Oct-05
NAF-09
CHLOROFORM
0,11 J
70
NCAC_2LGW_1/10
UG/L
13-Oct-05
NAP-09
PFOA
0.116
2
NC IMAC
UG/L
13-Oct-05
NAF-09
PFOA(TRIAL.)
0.116
UG/L
13-Oct-05
NAF-10
APFO
0.134
UG/L
13-Oct-05
NAF-10
APFO (Trial)
0.134
UG/L
13-Oct-05
NAF-10
JCJHLORIDE
31200
250000
NCAC 2LGW 1/10
8of21
DEQ-CFW 00046209

Appendix 8; Table 1 Historical Site -Wide Groundwater Detections
Phase III RFI Work Plan (Rev. 1)
DuPont Fayetteville Facility
Fayetteville, NC
13-Oct-05
NAF 10
CHLOROFORM
019 J
70
NCAC_2LGW t/10
UG/L
13-Ott-05
NAF-10
DICHLORODIFLUOROMETHANE
0,69
1000
NCAC_2LGW_1/10
UG/L
13-Oct-05
NAF-10
PFOA
0.129
2
NC IMAC
UG/L
13-Oct-05
NAF-10
PFOA(TRIAL)
0.129
UG/L
13-Oct-05
NAF-01
1,2-DICHLOROBENZENE
0.2 J
20
NCAC 2LGW _1/10
UG/L
13-Oct-05
NAF-01
APFO
0.151
UG/L
13-Oct-05
NAF-01
APFO (Trial)
0,151
UG/L
13-Oct-05
NAP-01
CHLORIDE
48800
250000
NCAC 2LGW 1/10
UG/L
13-C3ct-(35
NAF-01
CHLOROFORM
1.1
70
fVCAC�2.t.Gv1f�1/10
UG/L
13-Oct-05
NAF-01
DICt-ILORODIFLUOROMETHANE
0.17J
1000
NCAC_2LGW_1/10
UG/L
13-Oct-05
NAF-01
PFOA
0.145
2
NC IMAC
UG/L
13-Oct-05
NAF-01
PFOA(TRIAL)
0.145
UG/L
14-Oct-05
NAP-06
1,2-DICHLOROBENZENE
0.12J
20
NCAC 2LGW_1/10
UG/L
14-Oct-05
NAF-06
1,2-DICHLOROETHANE
0.46J
0.4
NC'AC�2LGW_1/10
UG/L
14-Oct-05
NAF-06
1,2-DICHLOROETHANE
0.42 J
0,4
NCAC2LGW1/10
UG/L
14-Oct-05
NAF-06
APFO
0,535
UGJL
14-Oct-05
NAF-06
APFO (Trial)
0.535
UG/L
14-Oct-05
NAF-06
BI5(2-E-rHYLHEXYL)PHTHALATE
1.6 J
3
€NC.AC 2LGW-_1J10
UG/L
14-Oct-05
NAF-06
CHLORIDE
166000
250000
NCAC.2LGW_1/10
UG/L
14-0ct 05
NAF-06
CHLORIDE
162000
250000
NCAC_2LGW_1/10
UG/L
14-Oct-05
NAF-06
CHLOROFORM
0.28 J
70
€NCAC_2LGW 1/10
UG/L
14-Oct-05
NAF-06
CHLOROFORM
0.25 J
70
NCAC 2LGW 1/10
UG/L
14-Ott-05
NAF-06
FLUORIDE
11200
2000
NCAC 2LGW 1/10
UG/L
14-Oct-05
NAP-06
FLUORIDE
10500
2000
NCAC 2LGW 1/10
UG/L
14-Oct-05
NAF-06
METHYLENE CHLOMDE
0.381
5
1 NCAC�2LGW__1/10
�2LGW
UG/L
14-Oct-05
NAF-06
METHYLENE CHLORIDE
0.3 J
5
NCAC _1/10
UG/L
14-Oct-05
NAF-06
PFOA
0.514
2
NC IMAC
UG/L
14-Oct-05
NAF-06
PFOA(TRIAL)
0.514
UG/L
14-Oct-05
NAF-06
TETRACHLOROETHYLENE
0.18 J
0.7
NCAC 2LGW 1/10
UG/L
14-Oct-05
NAF-06
TOLUENE
0.0881
600
NCAC 2LGW_I/10
UG/L
1.4-Oct-05
NAF-06
TRANS-1,2-DICHLOROETHENE
0,0951
100
NCAC �2LGW _1/10
~2LGW_1/10
UG/L
14-Oct-05
NAF-06
TRAINS-I,2-DICHLOROETHENE
0,093J
100
NCAC
UG/L
14-Oct-05
NAF-03
APFO
0.872
UG/L
14-Oct-05
NAF-03
APFO (Trial)
0.872
UG/L
14-Oct-05
NAF-03
CHLORIDE
11700
250000
NCAC 2LGW_1/10
W2LGW
UGJL
14-Oct-05
NAF-03
CHLOROFORM
0.32 J
70
NCAC _1/10
UG/L
14-0tt 05
iNAF-03
PFOA
0.838
2
NC IMAC
UGJL
1.4-Oct-05
NAF-03
PFOA(TRIAL)
0.838
UG/L
14-Oct-05
NAF-03
TETRACHLOROETHYLENE
0,19 J
07
NCAC 2LGW 1/10
UG/L
14-Oct-05
NAF-02
1,2-DICHLOROETHANE
0,28 J
04
NCAC�2LGW_1/10
UGJL
14-Oct-05
NAF-02
APFO
0.246
UG/L
14-Oct-05
NAF-02
APFO (Trial)
0,246
UG/L
14-Oct-05
NAF-02
BROMODICH LOROM ETHANE
1,5
0:6
NCAC 2LGW 1/10
UG/L
14-Oct-05 I
NAF-02
CHLORIDE
62100
2500WO
NCAC_2LGW 1/10
�2LGW_1/s0
UG/L
14-Oct-05
NAF-02
CHLORODIBROMOMETHANE
0.32J
04
NCAC
�2LGWW1/10
UG/L
14-Litt-05
NAF-02
CHLOROFORM
11
70
NCAC
UG/L
14-Oct-05
NAF-02
FLUORIDE
15100
2000
NCAC_2LWG1/10
UG/L
14-Oct-05
NAF-02
METHYLENE CHLORIDE
0.55
5
NCAC_2LGW_1/10
UG/L
14-Oct-05
NAF-02
PFOA
0.236
2
NC IMAC
UG/L
14-Oct-05
NAF-02
PFOA(TRIAL)
0.236
UG/L
14-Oct-05
NAF-02
TOLUENE
0.1 J
600
NCAC 2LGW_1/10 I
UG/L
14-Oct-05
PZ-06
ACETONE
9.8
6000
NCAC 2LGW_1/10
UG/L
14-Oct'-05
PZ-06
ICHLORIDE
82200
250000
NCAC_2LGW-_1/10
UG/L
9of21
DEQ-CFW 00046210

m
C
Appendix B. Table I Historical Site -Wide Groundwater Detections
Phase III RFI Work Plan (Rev. 1)
DuPont Fayetteville Facility
Fayetteville, NC
.0
.14-Oct-05
PZ-06
CHLOROFORM
11
70
NCAC _2LGW 1/10
UG/L
14-Oct-05
PZ-06
FLUORIDE
49800
2000
NCAC 2LGW 1/10
UG/L
14-Oct-05
PZ-06
METHYLENE CHLORIDE
100
5
NCAC 2LGW_1/10
UG/L
14-Oct-.05
PZ-06
TOLUENE
0.1.4 J
600
NCAC 2LGW 1/10
UG/L
14-Oct-05
PZ-06
-1-RANS-1,2-DICHLOROETHENE
0A6 J
100
0
UG/I..
14-Oct-05
NAF-07
APFO
0.0851
UG/L
14-Oct-05
NAF-07
APFO (Trial)
0,0851
UG/L
74-0ct-05
NAF-07
BROMODICH LOROM ETHANE
0.14 J
0.6
NCAC 2LGW 1/10
UG/L
14-Oct-05
NAF-07
CARBON TETRAC14LORIDE
0.33 J
03
NCAC 2LGW_1/10
UG/L
14-Oct-05
NAF-07
CHLORIDE
31000
250000
NCAC_21_GW_1./10
UG/L
14-Oct-05
NAF-07
CHLOROFORM
10
70
NCAC 2LGW_1/10
UG/L
14-Oct-05
NAF-07
METHYLENE CHLORIDE
0.43 J
5
NLACL2L.GW_1.//10
UG/L
14-Oct-05
NAF-07
PFOA
0.0817
2
NCIMAC
UG/L
14-Oct-05
NAF-07
PFOA(TRIAL)
0.0817
LJG/L
14-Oct-05
PZ-05
CHLORIDE
3940
250000
NCAC 2LGW_1/10
UG/L
14-Oct-05
PZ-05
CHLOROFORM
0.26 J
70
NCAC_2LGW 1/10
LJG/L
14-Oct-05
PZ-05
ORTHO-XYLENE
0.057 J
UG/L
14-Oct-05
PZ-05
TETRACHLOROETHYLENE
0,21 J
03
NCAC_2LGW_1'/10
UG/L
14-Oct-05
PZ-05
TOLUENE
0.2J
600
NCAC 2LGW 1/10
UG/L
17-Oct-05
NAF-11A
APFO
0,0206
UG/L
17-Oct-05
NAF-11A
APFO (Trial)
0,0206
UG/L
17-Oct-05
NAF-11A
PFOA
0.0198
2
NCIMAC
UG/L
17-Oct-05
NAF-11A
PFOA(TRiAQ
0.0198
UG/L
17-Oct-05
SMW-05
APFO
147
UG/L
17-Oct-05
SMW-05
APFO (Trial)
147
UG/L
17-Oct-05
SMW.-05
PFOA
141
2
NCIMAC
UG/L
17-Oct-05
SMW-05
PFOA(TRIAL)
141
UG/L
17-0c.t-05
SMW-07
APFO
0.0193
UG/L
17-Oct-05
SMW-07
APFO (Trial)
0.0193
UG/L
17-Oct-05
I SMW-07
PFOA
0,0185
2
NCIMAC
UG/L
17-Oct-05
SMW-07
PFOA(TRIAL)
0.0185
UGIL
17-Oct-05
PZ-12
APFO
0.0207
UG/L
17-Oct-05
PZ-12
APFO (Trial)
0.0221
UG/L
17-Oct-05
PZ-12
PFOA
0,0199
2
NCIMAC
UG/L
17-Oct-05
PZ- 12
PFOA(TRIAL)
0.0212
UG/L
77-0ct-05
SMW-04B
APFO
2.25
UG/L
17-Oct-05
SFr W-04B
APFO (Trial)
2,31
UG/L
17-Oct-05
SMW-04B
PFOA
2.16
2
NCIMAC
UG/L
17-Oct-05
SMW-04B
PFOA(TRIAL)
2,22
UG/L
18-Oct-05
PZ-03
ACETONE
1.7 1
6000
NCAC_2LGW 1110
UG/ L
18-Oct-05
PZ-03
METHYLENE CHLORIDE
0,51
5
NCAC 2LGW 1/10
UG/L
18-Oct-05
PZ-03
TOLUENE
015 j
600
NCAC 2LGW
LJC/L
18-Oct 05
NAF-04
1,2-DICHLOROETHANE
0J3 J
0A
NCAC-2LGW-1/10
UG/L
18-Oct-05
NAF-04
APFO
0,212
UG/L
18-Oct-05
NAF-04
APFO (Trial)
0.212
UG/L
18-Oct-05
NAF-04
CHLORIDE
41200
250000
1 NCAC.._2LGW--I-/IO
UG/L
18-Oct-05
NAF-04
CHLOROFORM
0,67
70
NCAC 2LGW_1/10
UG/L
18-Oct-05
NAF-04
METHYLENE BROMIDE
0,25 J
UG/L
18-Oct-05
NAF-04
METHYLENE CHLORIDE
580
5
NCAC 2LGW_1/10
UG/L
18--oct-05
NAF-04
PFOA
0104
2
NCIMAC
UG/L
18-Oct-05
NAF-04
PFOA(TRIAQ
0.204
UG/L
18-Oct-05
NAF-04
'TOLUENE
0A7 J
600
NCAC 21_GW_1/10
UG/L
18-Oct-05
NAF-04
ITRANS-1,2-DICHLOROETHENE
0.28 J
100
NCAC 2LGW 1/10
UG/L
18-Oct-05
NAF-04
TRICHLOROETHENE
0,55
3
NCAC 2LGW 1/10
UG/L
18-Oct-05
PZ-04
I HANE
0,24E
6
NCAC 2LGW 1/10
UG/L
10 of 21
DEQ-CFW-00046211

Appendix B. Table 1 Historical Site -Wide Groundwater Detections
Phase III RFI Work Plan (Rev. 1)
DuPont Fayetteville Facility
Fayetteville, NC
�
KK kfi { i # �� 4#3,
� 'k ..�rf.�.� S`kf•, sty ~
.5k
S
'k
� `.
1.8-Oct-05
PZ-04
1,2-DICHLOROBENZENE
0.16J
20
NCAC 2LGW_1/10
�2LGW
UG/L
18-Oct-05
PZ-04
1,2-DICHLOROETFIANE
1.6
0.4
NCAC 1J10
UO/L
18-Oct-05
PZ-04
CHLORIDE
22000
250000
NCAC _2LGW_1/10
UG/L
18-Oct-05
PZ-04
CHLOROBENZENE
0.087 J
50
NCAC 2LGW 1/10
UG/L
18-Oct-05
PZ-04
CHLOROFORM
0.25.1
70
NCAC_2LGW_1/10
UGJL
18-Oct-05
PZ-04
METHYLENE CHLORIDE
0.87
5
NCAC_2LGW_1/10
UG/L
18-Oct-05
PZ-04
ORTHO-XYLENE
0.044J
UG/L
18-Oct-05
PZ-04
TETRACHLOROETHYLENE
0.24 J
03
NCAC 2LGW�1/10
UG/L
18-Oct-05
PZ-04
TOLUENE
0.07J
600
NCAC _2LGW_1/10
UG/L.
18-Oct-05
PZ-0=4
TRANS-1,2-DICHLOROETHENE
0.21
100
NCAC2LGW_1/10
UGJL
18-Oct-05
PZ-04
TRICHLOROETHENE
0.28 J
3
NCAC 2LGW_1/10
�2LGWm1/10
UG/L
18-Oct-05
MW-07S
CHLORIDE
12000
250000
NCAC
UG/L
18-Oct-05 I
MW-07S
METHYLENE CHLORIDE
0.161
5
NCAC m2LGW_1/10
UG/L
18-Oct-05
MW-7S
APFO
0.0472
UG/L
18-Oct-05
MW-7S
APFO (Trial)
0,046
UG/L
18-Oct-05
MW-7S
PFOA
0.0454
2
NC IMAC
UGJL
18-Oct-05
MW-7S
PFOA(TRIAL)
0,0442
UG/L
10-Nov-05
SMW-04B
APFO
2.51
UGJL
10-Nov-05
SMW-04B
APFO (Trial)
2,54
UG/L.
10-Nov-05
5MW-04B
PFOA
2.41
2
NC IMAC
UGJL
10-Nov-05
SMW-04B
PFOA(TRIAL)
2A4
UG/L
13-Dec-05
SHOWER EGS
APFO
3.83
UGJL
13-Dec-05
SHOWER EGS
APFO (Trial)
3,77
UG/L
13-Dec-05
SHOWER EGS
PFOA
3.68
2
NC IMAC
UG/L
13-Dec-05
SHOWER EGS
PFOA(TRIAL)
162
UGJL
13-Dec-05 I
SMW-06
APFO
0124
UGJL
13 Dec-05
SMW-06
APFO (Trial)
0.224
UG/L
13-Dec-05
SMW-06
PFOA
0,215
2
NC IMAC
UG/L.
13-Dec-05
SMW-O#
PFOA(TRIAL)
0.215
UGJL
13-Dec-05
SMW-05
APrO
765
UG/L
13-Dec-05
SMW-05
APFO (Trial]
765
UG/L
13-Dec-05
SMW-05
PFOA
735
2
NC NAC
UG/L
13-Dec-05
SMW-05
PFOA(TRIAL)
735
UG/L
13-Dee-05 I
SM W-07
APFO
NQ (<0.012)
UG/L
13-Dec-05
SMW-07
APFO (Trial)
NQ (<0.012)
UG/L
13-Dec-05
SMW-07
PFOA
NQ (<0,012)
2
NC IMAC
UG/L
13-Dec-05
SMW-07
PFOA(TRIAL)
NQ(<0,012)
UG/L
13-Dec-05
PZ-12
APFO
0.0146
UG/L
13-Dec-OS
PZ-12
APFO (Trial)
0.0146
UG/L
13-Dec-05
PZ-12
PFOA
0.014
2
NC IMAC
UG/L
13-Dec-05
PZ-12
PFOA(TRIAL)
0,014
UG/L
20-Dec-05 I
INSITU ##2 SHALLOW
APFO
NQ (<OM3)
UG/L
20-Dec-05
INSITU #2 SHALLOW
APFO (Trial)
NO. (<0.013)
UG/L
20-Dec-05
INSITU #2 SHALLOW
PFOA
NQ (<0.013)
2
NC IMAC
UGJL
20-DTc-051
INSITU #2 SHALLOW
PFOA(TRIAQ
NQ (<0.013)
UGJL
20-Dec-05
INSITU #1 SHALLOW
APFO
NQ (<0.013)
UG/L.
20-Dec-05
INSITU #1 SHALLOW
APFO (Trial)
NQ (<0.013)
UGJL
2O-Dec-05
INSITU #1 SHALLOW
PFOA
NQ (<0.013)
2
NC IMAC
UG/L
20-Dee-05
INSITU 41 SHALLOW
PFOA(TRIAL)
NQ (<0.013)
UGJL
24-Jan-06
SMW-04B
APFO
1.3
UGJL
24-Jan-06 I
SPv W-04B
APFO (Trial)
1:3
UG/L
24-Jan-06
SMW-04B
PFOA
1.25
2
NC IMAC
UG/L
24-Jan-06
SMW-04B
PFOA(TRIAL)
1,25
UG/L
24-Jan-06
LTW-04
CALCIUM
2200 J
UG/L
24-Jan-06
LTW-04
CHLORIDE
3890
250000
NCAC_2LGW 1/10
UGJL
11 of 21
DEQ-CFW 00046212

Appendix B: Table I Historical Site -Wide Groundwater Detections
Phase III RFI Work Plan (Rev. 1)
DuPont Fayetteville Facility
Fayetteville, NC
24-Jan-06
LTW-04
FLUORIDE
205
2000
NCAC 2LGW 1/10
UG/L
24-Jan-06
LTW-04
IRON
3140
300
NCAC 2LGW 1/10
UG/L
24-Jan-06
LTW-04
MAGNESIUM
1700 J
UG/L
24-Jan-06
LTW-04
MANGANESE
484
50
NCAC _2LGW 1/10
UG/L
24-Jan-06
LTW-04
METHANE
7.5
UG/L
24-Jan-06
LTW-04
PHOSPHORUS
104J
UG/L
24-Jan-06
LTW-04
POTASSIUM
1220J
UG/L
24-Jan-06
UI"W-04
SODIUM
4180J
UG/L
24-Jan-06
LTW-04
SULFATE
13700
250000
NCAC 2LGW-.1/10
UGA
24-Jan-06
LTW-04
TOLUENE
0.084 J
600
NCAC_2LGW_1/10
UG/L
24-Jan-06
mW-1S
APFO
0.0378
UG/L
24-Jan-06
MW-IS
APFO (Trial)
0.0378
UG/L
24-Jan-06
mW-1S
PFOA
0.0363
2
NCIMAC
UG/L
24-Jan-06
MW-15
PFOA(TRIAL)
0,0363
UG/L
2-5--.1 a n 06
NAF-03
1, I-DICH LORD ETHANE
0.092 J
6
NCAC 2LGW 1/10
UG/L
25-Jan-06
NAF-03
APFO
0.434
UG/L
25-Jan-06
NAF-03
APFO (Trial)
0,426
UG/L
25-Jan-06
NAF-03
CALCIUM
1830 J
UG/L
25-Jan-06
NAF-03
CHLORIDE
11600
250000
NCAC_2LGW_1/10
UG/L
25-Jan-06
NAF-03
CHLOROFORM
0.14 J
70
..-NCAC.2LGW_1/10
UG/L
25-Jan-06
NAF-03
DICH LORODI FLUORO METHANE
1.3
1000
NCAC-2LGW-1/10
UG/L
25-Jan-06
NAF-03
ETHENE
0.75
UG/L
25-Jan-06
NAF-03
FLUORIDE
2850
2000
NCAC_2LGW_1/10
UG/L
25-Jan-06
-'25-J.n-06
NAF--03
IRON
100
300
NCAC 2LGW 1110
UG/L
NAF-03
MAGNESIUM
495J
UG/L
25-Jan-06
NAF-03
MANGANESE
13
50
NCAC 2LGW 1/10
UG/L
25-Jan-06
NAF-03
NITRATE
1250 J
10000
NCAC_2LGW 1/10
UG/L
25-Jan-06 I
NAF-03
PFOA
0.417
2
NCIMAC
UG/i-
25-Jan-06
NAF-03
PFOA(TRIAL)
0A09
UG/L
25-Jan-,06
NAF-03
PHOSPHORUS
87.9 j
UG/L
25-Jan-06
NAF-03
POTASSIUM
23800
UG/L
25-Jan-06
NAF-03
SODIUM
7510
UG/L
25-Jan-06
NAF-03
SULFATE
11900
250000
NCAC 2LGW 1/10
UG/L
25-Jan-06
NAF-03
------------------------------------
TOLUENE
0.074 J
600
NCAC_2LGW-1./10
UG/L
25-Jan-06
Pill-05
APFO
NQ (<0.012)
UG/L
25-Jan-06
PW-05
APFO (Trial)
NQ (<0.012)
UG/L
25-Jan-06
PW-05
PFOA
NQ (<0.012)
2
NC IMAC
UG/L
25-Jan-06
PW-05
PFOA(TRIAL)
NO (<0.012)
UG/L
26-Jan-06
NAF-11A
APFO
0,0482
UG/L
26-Jan-06
NAF-11A
APFO (Trial)
0.0482
UG/L
2-6-2an-06
NAr-11A
CALCIUM
3950J
UG/L
T 26-Jan-06
NAF-11A
CHLORIDE
4250
250000
NCAC 2LGW.._1/10
UG/L
26-Jan-06
NAF-11A
CHLOROFORM
0.111
70
NCAC_21.GW_1/10
UG/L
26-Jan-06
NAF-11A
FLUORIDE
505
2000
NCAC 2LGW_1/10
UG/L
26-Jan-06
NAF-11A
IRON
749
300
NCAC_2LGW_1/10
UG/L
26-Jan-06
NAF-11A
MAGNESIUM
2700J
UG/L
26-Jan-06
----------- NAF-11A
MANGANESE
58.1
50 ,
I-NCAC _2LGW _]./I.0
UG/L
26-Jan-06
NAF-11A
NITRATE
1400
IDWO
I NCAC 21LGY_1/10
UG/L
26-Jan-06
NAF-11A
PFOA
0,0463
2
NCIMAC
UG/L
26-Jan-06
NAF-11A
PFOA(TRIAL)
0.0463
UG/L
26-Jan-06
NAF-11A
PHOSPHORUS
107J
UG/L
26-Jan-06
NAF-11A
IPOTASSIUM
10901
UG/L
26-Jan-06
NAF-11A
SODIUM
30301
UG/L
26-Jan-06
NAF-11A
ISULFATE
16300
250000
NCAC_2LGW_1/10 I
UG/L
12 of 21
DEQ-CFW-00046213

Appendix B- Table I Historical Site -Wide Groundwater Detections
Phase III RFI Work Plan (Rev. 1)
DuPont Fayetteville Facility
Fayetteville, NC
26-Jan-06
NAF-11A
TOTAL ORGANIC CARBON
6510
UG/L
26-Jan-06
SMW_06
APFO
0.261
UG/L
26-Jan-.06
SMW-06
APFO (Trial)
0.261
UG/L
26-Jan-06
SIVIW_06
PFOA
0.251
2
NC IMAC
UG/L
26-Jan-06
SMW-06
PFOA(TRIAL)
0,251
UG/L
26-Jan-06
SMW-07
APFO
NO (<0.012)
UG/L
26-Jan-06
SMW-07
APFO (Trial)
NQ (<0.012)
UG/L
26-Jan-06
SMW-.07
PFOA
NO (<0.012)
2
NC IMAC
UG/L
276--Ja,,06
SMW-07
PFOA(TRiAL)
NQ (<0,012)
UG/L
26-Jan-06
SMW-02
APFO
NO (<0,012)
UG/L
26-Jan-06
SMW-02
APFO (Trial)
NQ (<0,012)
UG/L
26-Jan-06
SMW-02
PFOA
NQ (<0,012)
2
NC IMAC
UG/L
26-Jan-06
SMW-02
PFOA(TRIAL)
NQ (<0.012)
UG/L
26-Jan-06
PZ-12
APFO
0.018
UG/L
26-Jan-06
PZ-12
APFO (Trial)
0,018
UG/L
26-Jan-06
PZ-12
PFOA
0.0173
2
NC IMAC
UG/L
26-Jan-06
PZ-12
PFOA(TRIAL)
0.0173
UG/L
26-Jan-06
PZ-16
APFO
NQ (<0.012)
UG/L
26-Jan-06
PZ-16
APFO (Trial)
NO (<0.012)
UG/L
26-Jan-06
PZ­16
PFOA
NQ (<0.012)
2
NC IMAC
UG/L
26-Jan-06
PZ-16
PFOA(TRIAL)
NQ (<0,012)
UG/L
26-Jan-06
PZ-15
APFO
0.0316
UG/L
26-Jan-06
PZ-15
APFO (Trial)
0.0322
UG/L
26-Jan-06
PZ-15
PFOA
0.0303
2
NC IMAC
UG/L
26-Jan-06
PZ-15
PFOA(TRIAL)
0.0309
UG/L
31-Jan-06
NAF-06
1,2-DICHLOROETHANE
0.25 J
QA
f NCAC_2LGW—I,JlO
UG/L
3-1--J-an-06
NAF-06
1,2-DICHLOROETHANE
0.2 j
0A
NCAC_2i_GiA .1/10
UG/L
31-Jan-06
NAF-06
1,4-DICHLOROBENZENE
0J4 J
6
NCAC_2LGW_1/10
UG/L
31-Jan-06
NAF-06
1,4-DICHLOROBENZENE
0.14 J
6
NCAC 2LGW 1/10
LJG/L
31-Jan-06
NAF-06
ACETONE
0.86 j
6000
NCAC_2LGW 1/10
UG/L
31-Jan-06
NAF-06
ALKALINITY, BICARB. AS CAC03 AT
29800
UG/L
PH 4,5
ALKALINITY, BICARB. AS CACOB AT
31-Jan-06
NAF-06
28700
UG/L
PH 4.5
31-Jan-06
NAF-06
AMMONIA
77,8J
UG/L
31-Jan-06
NAF-06
APFO
0.303
UG/L
31-Jan-06
NAF-06
APFO (Trial)
0303
UG/L
31_-Jw,06
NAF-06
CALCIUM
2810 J
U_G/L
31-Jan-06
NAF-06
CALCIUM
2760 J
UG/L
31-Jan-06
NAF-06
CHLORIDE
152000
250000
1 NCAC�_21-GW=1/10
UG/L
31-Jan-06
NAF-06
CHLORIDE
150000
250000
NCAC_2LGW_1,/10
UG/L
31-Jan-06
TAF-06
CHLOROFORM
0.32 J
70
NCAC_2LGW_I./10
UG/L
31-Jan-06
NAF-06
CHLOROFORM
03 J
70
NCAC 2LGW 1/10
UG/L
31-Jan-06
NAF-06
ETHENE
0.57
UG/L
31-Jan-06
NAF-06
FLUORIDE
22700
2000
NCAC 2LGW 1/10
UG/L
31-Jan-06
NAF-06
FLUORIDE
20800
2000
NCAC-2LGW-1/10
UG/L
31-Jan-06
NAF-06
IODOMETHANE
0.0891
UG/L
31-Jan-06
NAF-06
IRON
2310
300
1 NCAC_2LGW—I-/].0
UG/L
31-Jan-06
NAF-06
IRON
2270
300
NCAC 2LGW_1/10
UG/L
31-Jan-06 I
NAF-06
MAGNESIUM
2230J
UG/L
31-Jan-06
NAF-06
MAGNESIUM
2140J
UG/L
31-Jan-06
NAF-06
MANGANESE
94.5
so
2LGW_1/10
UG/L
31-Jan-06
NAF-06
MANGANESE
933
so
_NCAC
NCAC 2LGW_1/10
UG/L
31-Jan-06
NAF-06
METHANE
14J
I I
UG/L
31-Jan-06
NAF-06
METHANE
8,9 j 1_
I I
UG/L
13 of 21
DEQ-CFW-00046214

Appendix 8: Table I Historical Site -Wide Groundwater Detections
Phase III RFI Work Plan (Rev. 1)
DuPont Fayetteville Facility
Fayetteville, NC
31-Jan.-06
NAF-06
NITRATE
56601
10000
NCAC 2LGW 1110
31-Jan-06
NAF-06
NITRATE
3430 J
10000
NCAC 2LGW 1/10
UG/L
31 -Jan-06
NAF-06
PFOA
0,291
2
1 NC IMAC
UG/L
-
31-Jan- 6
NAF-06
PFOA(TRIA()
0.291
U L
31-Jan-06
NAF-06
PHOSPHORUS
116J
UG/L
31-Jan-06
NAF-06
PHOSPHORUS
111i
UG/L
31-Jan-06
NAF-06
POTASSIUM
329000
UG/L
31-Jan-06
NAF-06
POTASSIUM
323000
UG/L
31.-Jan-06
NAF-06
SODIUM
11400
UG/L
31-Jan-06
NAF-06
SODIUM
11200
UG/L
31-Jan-06
NAF-06
SULFATE
204000
250000
NCAC 2LGW 1/10
UG/L
31 -Jan 0 6
NAF-06
SULFATE
202000
250000
NCAC 2LGW 1/10
UG/L
31-Jan-06
NAF-06
TOLUENE
0,083 J
600
NCAC-2LGW_1/10
UG/L
31-Jan-06
NAF-06
TOTAL ORGANIC CARBON
8840
UG/L
31-Jan-06
NAF-06
TOTAL ORGANIC CARBON
8700
UG/L
31-Jan-06
NAF-06
TMCHLOROETHENE
0.06 j
3
NCAC 2LGW_1/10
UG/L
31-Jan-06
NAF-07
APFO
0,065
UG/L
31-Jan-06
NAF-07
APFO (Trial)
0.065
UG/L
31-Jan-06
NAF-07
CALCIUM
10500
UG/L
31-Jan-06
NAF-07
CHLORIDE
19100
250000
NCAC 2LGW_1/10
UG/L
31-Jan-06
NAF-07
_.CHLOROFORM
2
70
NCAC 2LGW_1/10
UG/L
31-Jan-06
NAF-07
FLUORIDE
405
2000
NCAC 2LGW 1/10
UG/L
31-Jan-06
NAF-07
MAGNESIUM
2550J
UG/L
31-Jan-06
NAF-07
MANGANESE
74.2
50
NCAC_2LGW_1/10
UG/L
31-Jan-06
NAF-07
NITRATE
6410
10000
NCAC-2LGW-1/1.0
UG/L
31-Jan-06
NAF-07
PFOA
0.0624
2
NC IMAC
UG/L
31-Jan-06
NAF-07
PFOA(TRIAL)
0.0624
UG/L
31-Jan-06
NAF-07
PHOSPHORUS
99.4 J
UG/L
31-Jan-06
NAF-07
POTASSIUM
3340J
UG/L
31-Jan-06
NAF-07
SODIUM
11600
UG/L
31-Jan-06
NAF-07
SULFATE
14600
250000
NCAC_2LGW_1/10
UG/L
31-Jan-06
NAF-08A
1,2-DICHLOROETHANE
0.48 J
0.4
NCAC 2LGW 1/10
UG/L
31.-Jan-06
NAF-08A
1,4-DICHLOROBEN2ENE
0.11 J
6
2LGW_1/10
UG/L
31-Jan-06
I NAF-08A
AMMONIA
282J
—NCAC
UG/L
31-Jan-06
NAF-08A
APFO
0.0526
UG/L
31-Jan-06
NAF-08A
APFO (Trial)
0D526
UG/L
31-1an-06
NAF-08A
CALCIUM
1510J
UG/L
31-Jan-06
NAF-08A
CI-ILORIDE
6260
250000
NCAC 2LGW_1/10
UG/L
31-Jan-06
NAF-08A
IODOMETHANE
0.14 J
UG/L
31-Jan-06
NAF-08A
M-ON
3790
300
NCAS,2LGW_1/10
UG/L
31-Jan-06
NAF-08A
MAGNESIUM
9751
UG/L
31-Jan-06
NAF-08A
MANGANESE
206
50
NCAC _2LGW_1/10
UG/L
31-Jan-06
NAF-08A
METHANE
280
UG/L
31-Jan-06
NAF-08A
PFOA
0.0505
2
NC IMAC
UG/L
31-Jan-06
NAF-08A
PFOA(TRIAL)
0,0505
UG/L
31-Jan-.06
I NAF-08A
PHOSPHORUS
87.71
UG/L
31-Jan-06
NAF-08A
POTASSIUM
17501
UG/L
31-Jan-06
NAF-08A
SODIUM
6060
UG/L
31-Jan-06
NAF-08A
SULFATE
8750
250000
NCAC_2LGW_1/10
UG/L
31-Jan-06
NAF-08A
TOTAL ORGANIC CARBON
4580J
UG/L
31-Jan-06
-71-Jan-06
NAF-08B
APFO
NQ (<0,012)
UG/L
NAF-08B
APFO (Trial)
NO (<0.012)
UGA
3 -Jan-06
NAF-08B
PFOA
NO (<OL12)
2
NC IMAC
UCl/L
31-Jan-06
NAF-09B
PFOA(TRIAL)
Nib (<0.012)
UGA
01-Feb.-06
I NAF-02
IANE
0.15 j
0.4
NCAC 2LGW I /10 j
14 of 21.
DEQ-CFW-00046215

Appendix 8; Table 1 Historical Site -'Aside Groundwater Detections
Phase III RFI Work Plan (Rev. 1)
DuPont Fayetteville Facility
Fayetteville, NC
01-Feb-05
NAF-02
1 4-DICHLOROBENZENE
0.16J
6
NCAC 21-.GW_1/10
W2LGW
UG/L
01-Feb-06
NAF-02
J.,4-DICHLORcOBENZENE
0.13 J
6
NCAC _1/10
UG/L
01-Feb-06
NAF-02
ACETONE
34
6000
NCAC 2LGVV 1/10
UG/L
01-Feb-06
NAF-02
ACETONE
33
6000
NCAC_2LG 1/10
UG/L
01-Feb-06
NAF-02
ALKALINITY, BICARB. AS CAC03 AT
236000
LJG/L
PH 4.5
01-Feb-06
NAF-02
ALKALINITY, BICARB. AS CAC03 AT
234000
UG/L
PH 4.5
01-Feb-06
NAF-02
AMMONIA
10801
UG/L
01-Feb-06
NAF-02
AMMONIA
1070J
UG/L
01-Feb-06
NAF-02
APFO
0.316
UG/ L
01-Feb-06
NAF-02
APFO (Trial)
0.316
UG/L
01-Feb-06
NAF-02
CALCIUM
2660 J
UG/L
01-Feb-06
NAF-02
CALCIUM
2600J
UG/L
01-Feb-06
NAF-02
CARBON DISULFIDE
0.51
700
NCAC 2LG=a°J_1/10
m2LGW
UG/L
01-Feb-06
NAF-02
CARBON DISULFIDE
0.291
700
NCAC _1/10
UG/L
01-Feb-0£
NAF-02
CHLORIDE
146000
250000
NCAC 2LGW 1/10
UG/L
01-Feb-06
NAF-02
CHLORIDE
144000
250000
NCAC 2LGVV 1/10
UG/L
01-Feb-06
NAF-02
CHLOROFORM
0.19 J
70
NCAC_2LGW_1./10
W2LGW
UG/L
01-Feb-06
NAF-02
CHLOROFORM
0.17 J
70
NCAC _1/10
UG/L
01-Feb-06
NAF-02
ETHENE
1.8
UG/L
01-Feb-06 I
NAF-02
ETHENE
1.7
UG/L
01-Feb-06
NAF-02
ETHYL METHACRYLATE
0.1 J
UG/L
01-Feb-06
NAF-02
FLUORIDE
38900
2000
NCAC 2LGW_1/10
UG/L
01-Feb-06
NAF-02
FLUORIDE
38000
2000
NCAC 2LGW _1/10
UG/L
01-Feb-06
NAF-02
IRON
21.4 J
300
NCAC2LGIN_1/10
UG/L
01-Feb-06
NAF 02
IRON
174J
300
NCAC_2LGW_1/10
UG/L
01-Feb-06
NAF-02
MAGNESIUM
1710J
UGJL
01-Feb-06
NAF-02
MAGNESIUM
1680J
UG/L
01-Feb-06
NAF-02
MANGANESE
54.8
50
NCAC 2LGW_1/10
UGJL
01-Feb-06
NAF-02
MANGANESE
53.7
50
NCAC_2LGW_1/10
UG/L
01-Feb-06
NAF-02
METHANE
26
UG/L
01-Feb-06
NAF-02
METHANE
25
UG/L
01-Feb-06
NAF-02
NAPHTHALENE
0,68 J
6
NCAC 2LGW_1/10
UGJL
01-Feb-06
NAF-02
NAPHTHALENE
0.63 J
6
(NCAC 2LGW 1/10
UG/L
01-Feb-06
NAF-02
NITRATE
3350 J
10000
NCAC_2LGW_1/10
UGJL
01-Feb-06
NAF-02
NITRATE
18001
10000
NCAC 2LGW 1/10
UG/L
01-Feb-06
NAF-02
ORTHO-XYLENE
0.037 J
UG/L
01-Feb-06
NAF-02
PFOA
0.304
2
NC IMAC
UG/L
01-Feb-06
NAF-02
PFOA(TRIAL)
0.304
UG/L
01-Feb-06
NAF-02
PHENOL
1.1J
30
NCAC 2LGW 1/10
UGJL
01-Feb-06
NAF-02
PHENOL
1.1J
30
NCAC_2LGVt4_1/10
UG/L
01-Feb-06
NAF-02
PHOSPHORUS
204 J
UG/L
01-Feb-06
NAF-02
PHOSPHORUS
201 J
UG/L
01-Feb-06
NAF-02
POTASSIUM
390000
UGJL
01-Feb-06
NAF-02
POTASSIUM
388000
UCH/L
01-Feb-06
NAF-02
SODIUM
19800
UG/L.
01-Feb-06
NAF-02
SODIUM
19800
UG/L
01-Feb-06
NAF-02
SULFATE
89100
250000
NCAC 2LGW_1/10
UGJL
01-Feb-'06
NAF-02
SULFATE
87300
250000
NCAC 2LGW_1/ 0
UG/L
01-Feb-06
NAF-02
TOLUENE
0.26 J
600
NCAC2LGW_1/10
UG/L
01•Feb-'06
NAF-02
TOLUENE
0.23 J
600
NCAC 2LGW_1J10
UG/L
01-Feb-06
NAF-02
TOTAL ORGANIC CARBON
11300
UG/L
01-Feb-06
NAF-02
ITOTAL ORGANIC CARBON
10400
UG/L
01-Feb-06
NAF-02
TRANS-I,2-DICHLOROETHENE
0.068J
1.00
NCAC 2LGW,_1/10
UG/L
15 of 21
DEQ-CFW 00046216

F]
Appendix B. Table I Historical Site -Wide Groundwater Detections
Phase III RFI Work Plan (Rev. 1)
DuPont Fayetteville Facility
Fayetteville, NC
MENN
01-Feb-06
NAF-02
TRANS-1,2-DICHLOROETHENE
0.066 J
100
NCAC 2LGW_1/3.0
UG/L
01-Feb-06
NAF-02
TRICHLOROETHENE
0.056 j
3
NCAC_2LGW_1/10
UG/L
Cif-Feb-06
NAP-01
1,2-DICHLOROBENZENE
0,24J
20
NCAC_2LGVV_1/10
UG/L
01-Feb-06
NAF-01
1,3-DICHLOROBENZENE
0.16J
200
NCAC 2LGW 1/10
UG/L
01--Feb-06
NAF-01
1,4-DICH LO ROBE NZEN E
0,25 J
6
NCAC 2LGW 1/10
UG/L
01-Feb-06
NAF-01
2-HEXANONE
1.3.1
280
NC IMAC
UG/L
01-Feb-06
NAF-01
APFO
0.115
UG/L
0-1- Feb-06
NAF-01
APFO (Trial)
0.115
UG/L
01-Feb-06
NAF-01
CALCIUM
609 J
UG/L
01-Feb-06
NAF-01
CHLORIDE
51100
250000
NCAC_2LGW_I/lo
ml - ----------
01-Feb-06
NAF-01
CHLOROFORM
0.55
70
NCAC 2LGW_1/10
UG/L
01-Feb..06
NAF-01
ETHYL METHACRYLATE
0,53 J
UG/L
01-Feb-06
NAF-01
FLUORIDE
395
2000
NCAC 2LGW_1/10
UG/L
01-Feb-06
NAF-01
MAGNESIUM
2720J
UG/L
01-Feb-06
NAF-01
MANGANESE
7A. i
so
NCAC2LGW_1/10
UG/L
01-Fe-06
NAF-01
METHANE
130
UG/L
01- Feb-06
NAF 01
METHYL ISOBUTYL KETONE
0.881
UG/L
01-Feb-06
NAF-01
NITRATE
520
10000
NCAC 2LGW_1/10
UG/L
NAF-01
ORTHO-XYLENE
0.06 J
UG/L
01-Feb-06
NAF-01
PFOA
0A1
2
NCIMAC
UG/L
01-Feb-06
NAF-01
PFOA(TRIAL)
0.11
UG/L
01-Feb-06
NAF-01.
PHOSPHORUS
94.9 J
UG/L
01-Feb-06
NAF-01
POTASSIUM
2490J
UG/L
01-Feb-06
NAF-01
SODIUM
29300
UG/L
01-Feb-06
NAF-01
SULFATE
11000
250000
NCAC 2LGW_1/10
UG/L
01-Feb-06
NAF-01
TOLUENE
0A J
600
NCAC_2LGW 1/10
UG/L
01-Feb-06
NAF-01
TOTAL ORGANIC CARBON
3000J
UG/L
01.-Feb-06
NAF-01
TRICHLOROETHENE
0,067 J
3
NCAC 2LGW_1/10
UG/L
01-Feb-06
NAF-04
I.,4-DICHLOROBENZENE
0A1 J
6
NCAC-2LGW—I./10
UG/L
01-Feb-06
NAF-04
ACETONITRILE
11
UG/L
01-Feb-06
NAF-04
APFO
0,0653
UG/L
01-Feb--06
NAF-04
APFO (Trial)
0.0653
UG/L
01-Feb-06
NAF-04
CALCIUM
2650J
UG/L
01-Feb-06
NAF-04
CHLORIDE
44300
250000
NCAC_2LGW._1/10
UG/L
01-Feb-06
NAF-04
CHLOROFORM
0.37 J
70
NCAC 2LGW_1/10
UG/L
01-Feb-06
NAF-04
FLUORIDE
2500
2000
NCAC_2LGW—I,/10
UG/ L
01-Feb-06
NAF-04
IRON
4280
300
NCAC 2LGW 1/10
UG/L
01-Feb-06
NAF-04
MAGNESIUM
725J
UG/L
01-Feb-06
I NAF-04
MANGANESE
69.7
50
NCAC 2LGW_1/10
UG/L
01-Feb-06
NAF-04
METHANE
240
UG/L
01-Feb-06
NAF-04
METHYLENE CHLORIDE
12
5
NCAC 2LGW I/10
UG/L
01 Feb-06
NAF-04
NITRATE
3330
10000
NCAC 2LGW_1/10
UG/L
01-F b- 6
NAF-04
ORTHO-XYLENE
0.04 J
LEG/L.
01.-Feb-06
NAF­04
PFOA
0.0627
2
NCIMAC
UGA
01-Feb-06
NAF-04
PFOA(TRIAL)
0.0627
UG/L
01-Feb-06
NAF- 04
PHOSPHORUS
102J
UG/L
01-Feb-06
NAF-04
POTASSIUM
28500
UG/L
01-Feb-06
NAF-04
SODIUM
18900
UG/L
01-Feb-06
NAF-04
SULFATE
5510
250000
NCAC 2LGVJ 1/10
UG/L
01-Feb-06
NAF-04
TOLUENE
0.75
600
NCAC 2LGW 1/10
UGA
01-Feb-06
NAF04
TRANS-1,2-DICHLOROETHENE
0,35 J
100
NCAC 2LGW_1/10
UG/L
01-Feb-06
NAF-04
TRICHLOROETHENE
0.58
3
NCAC_2LGW 1/10
UG/L
01-Feb-06
PZ-04
11,1-DICHLOROETHANE
0,2 j
6
NCAC -..2LGW 1/10
UG L
01-Feb-06
PZ-04
11,2-DiCHLOROPENZENE
0.12J
20,
N
UG/L
01-Feb-06
PZ-04
11,2-DICHLOROETHANE
13
0A
NCAC 2LGW_1/10
UG/L
16 of 21
DEQ-CFW-00046217

Appendix B- Table I Historical Site -Wide Groundwater Detections
Phase III RFI Work Plan (Rev. 1)
DuPont Fayetteville Facility
Fayetteville, NC
S
01-Feb-06
PZ-04
1,4-DICHLOROBENZENE
0,141
6
NCAC 2LGW 1/10
UG/L
01- Feb-06
PZ-04
APFO
0.617
UG/L
01-Feb-06
PZ-04
APFO
0.241 J
UG/L
01-Feb-06
PZ-04
APFO (Trial)
0,615
UG/L
01-Feb-06
PZ-04
APFO {Trial)
0.239
UG/L
01-Feb-06
PZ-04
..........
CALCIUM
2120 J
UG/L
01-Feb-06
PZ-04
CHLORIDE
27100
250000
NCAC 2LGW_1/10
UG/L
01-Feb-06
PZ-04
CHLOROFORM
0,25 J
70
NCAC_2LGW_1/10
UG/L
01-Feb-06
PZ-04
ETHENE
10
UG/L
01-Feb-06
PZ-04
FLUORIDE
330
2000
NCAC 2LGW_1/10
UG/L
01-Feb-06
PZ-04
IODOMETHANE
0.42 J
UG/L
01-Feb-06
PZ-04
IRON
2740
300
NCAC 2LGW_.1/10
UG/L
01-Feb-06
PZ-04
MAGNESIUM
1670J
UG/L
01-Feb-06
PZ-04
MANGANESE
90.7
50
NCAC 2LGW 1/10
UG/L
01-Feb-06
PZ-04
METHANE
130
UG/L
0J-Feb-06
PZ-04
METHYLENE CHLORIDE
0.72
5
NCAC 2LGW_1/10
UG/L
01-Feb-06
PZ-04
ORTHO-XYLENE
0.046 J
UG/L
01-Feb-06
PZ-04
PFOA
0.593
2
NCIMAC
UG/L
01-Feb-06
PZ-04
PFOA
0,232 J
2
NCIMAC
UG/L
01-Feb-06
PZ-04
PFOA(TRIAL)
0.591
UG/L
01-Feb-06
PZ-04
0.23
UG/L
01-Feb-06
—LFOA(TRIAL)
PZ-04
PHOSPHORUS
97,5 J
UG/L
01-Feb-06
PZ-04
POTASSIUM
2320 J
UG/L
01-Feb-06
PZ-04
SODIUM
14500
UG/L
01-Feb-06
PZ-04
SULFATE
4660J
250000
NCAC 2LGW 1/10
UG/L
017Feb-06
PZ-04
TETRACHLOROETHYLENE
0.18 1
0.7
NCAC 2LGW 1/10
UG/L
01-Feb-06
PZ-04
TOTAL ORGANIC CARBON
3530J
UG/L
01-Feb-.06
PZ-04
TRANS-1,2-DICHLOROETHENE
0.14 J
100
NCAC 2LGW_1/10
UG/L
01-Feb-06
PZ-04
TRICHLOROETHENE
0.24 J
3
NCAC 2LGW_1/10
UG/L
01-Feb-06
LTW-03
1,4-DICHLOROBENZENE
0.111
6
NCAC 2LGW 1/10
UG/L
01-Feb-06
LTW-03
CALCIUM
2750J
UG/L
01-Feb-06
I
LTW-03
CHLORIDE
3730
250000
NCAC 2L.GW 1/10
UG/L
01-Feb-06
LTW-03
IRON
5170
300
NCAS=2LGW_1./.10
UG/L
01-Feb-06
LTW-03
MAGNESIUM
2000J
UG/L
01-Feb-06
LTV)-03
MANGANESE
111
50
NCAC 2LGW_1/10
UG/L.
01-Feb-06
LTW-03
METHANE
1.2
UG/L
01-Feb-06
LTW-03
PHOSPHORUS
95.7 J
UG/L
01-Feb-06
LTW-03
POTASSIUM
2710 J
UG/L
01-Feb-06
LTW-03
SODIUM
7860
UG/L
01-Feb-06
LTW-03
SULFATE
32100
250000
NCAC _21-GV/_1/10
UG/L
01-Feb-06
LTW-03
TOLUENE
0.09 J
600
NCAC 2LGW_1/10
UG/L
01-Feb-06
NAF-08B
ACETONE
ij
6000
NCAC _2LGW
UG/L
01-Feb-06
NAF-08B
ALKALINITY, BICARB. AS CAC03 AT
12500
UG/L
PH 4.5
01-Feb-06
NAF-086
CALCIUM
6020
UG/L
01-Feb-06
I
NAF-08B
CHLORIDE
8980
250000
NCAC 2LGW_1/10
UG/L
01-Feb-06
NAF-08B
FLUORIDE
380
2000
NCAC-2LGW_1/10
UG/L
01-Feb-06
NAF-08B
IRON
2210
300
NCAC 2LGW 1/10
UG/L
01-Feb-06
NAF-08B
MAGNESIUM
2730J
UG/L
01-Feb-06
NAF-08B
MANGANESE
9915
50
NCAC 2LGW 1/10
UG/L
01-Feb-06
NAF-08B
PHOSPHORUS
106J
UG/L
01-Feb-06
NAF-08B
POTASSIUM
4530J
UG/L
01-Feb-06
NAF-08B
SODIUM
17800
UG/L
01-Feb-06
NAF-088
ISULFATE
69100
250000
NCAC 2LGW 1/10
UG/L
01-Feb-06
NAF-08B
ITOLUENE
0.12 J
600
NCAC_2LGW 1/10
UG/L
17 of 21
DEQ-CFW-00046218

Appendix B: Table 2 Historical Site -Wide Groundwater Detections
Phase III RFI Work Plan (Rev. 1)
DL#Pont Fayetteville Facility
Fayetteville, NC
01 Feb 06
NAF^08B
TOTAL ORGANIC CARBON
3170 J
- - -------------
UG(L
01-Feb-06
NAF-09
APFO
0.0863
UG/L
01-Feb-06
NAF-09
APFO (Trial)
0.0863
UG/L
01-Feb-06
NAF-09
CALCIUM
439 J
UG/L
01-Feb-06
NAF-09
CHLORIDE
11900
250000
NCAC_2LGW_1/10
UG/L
01-Feb-06
NAF-09
IRON
264
300
NCAC _2LGW_1110
UG/L
01-Feb-06
NAF-09
MAGNESIUM
643 J
UG/L
01-Feb-06:
NAF-09
MANGANESE
12.8
50
NCAC 2LGW_1/10
UG/L
01-Feb-06
NAF-09
METHANE
17
UG/L
01-Feb-06
NAF-09
NITRATE
755
10000
NCAC 2LGW 1/10
UG/L
01-Feb-06
NAF-09
PFOA
0.0829
2
NC IMAC
UG/L
01-Feb-06
NAF-09
PFOA(TRIAL)
0,0829
UG/L
01-Feb-06
NAF-09
PHOSPHORUS
92.53
UG/L
01-Feb-06
NAF-09
POTASSIUM
111.01
UG/L
01-Feb-06
NAF-09
SODIUM
14100
UG/L
01-Feb-06
NAF-09
SULFATE
6430
250000
NCAC 2LGW_1/10
UG/L
01-Feb-06
NAF-10
APFO
0,0883
UG/L
01-Feb-06
NAF-10
APFO (Trial)
0.0883
UG/L
01-Feb-06
NAF-10
CALCIUM
1670J
UG/L
01-Feb-06
NAF-10
CHLORIDE
27400
250000
NCAC 2LGW_1/10
Ufa/L
01-Feb-06
NAF-10
FLUORIDE
265
2000
NCAC_2LGW_1/10
UG/€.
01-Feb-06
NAF-10
IRON
355
300
NCAC_2LGW_1/10
UG/L
01-Feb-06
NAF-10
MAGNESIUM
1490J
UG/L
01-Feb-06
NAF-10
MANGANESE
54,5
50
NCAC 2LGW_1/10
UG/L
01-Feb-06
NAF-10
METHANE
81
UG/L
01-Feb-06
NAF-10
NITRATE
135
3.0000
NCAC_2LGW_1/10
UG/L
01-Feb-06
NAF-10
PFOA
0.0848
2
NC IMAG
UG/L
01-Feb-06
NAF-10
PFOA(TRIAL)
0.0848
UG/L
01-Feb-06
NAF-10
PHOSPHORUS
96.5 J
UG/L
01-Feb-06
NAF-10
POTASSIUM
1540J
UG/L
01-Feb-06
NAF-10
SODIUM
22100
UG/L
01-Feb-06
NAF-10
SULFATE
11200
250000
NCAC 2LGW_1/10
UG/L
01-Feb-06
NAF-10
TOTAL ORGANIC CARBON
7090
UG/L
02-Feb-06
LTW-02
CALCIUM
1630J
UG/L
02-Feb-06
LTW-02
CARBON DISULFIDE
0.17J
700
NCAC 2LGW 1/10
A2LGVV
UG/L
02-Feb-06
!TW-02
CHLORIDE
5850
250000
NCAC 1/10
UG/L
02-Feb-06
I LTW-02
IRON
1080
300
NCAC_2LGW 1/10
UG/L
02-Feb-06
LTW-02
MAGNESIUM
788 J
Ufa/L
02-Feb-06
LTW-02
MANGANESE
21.9
50
NCAC_2LGW_1/10
UG/L
02-Feb-06
LTW-02
METHANE
18
UG/L
02-Feb-06
LTW-02
PHOSPHORUS
94.2 J
UG/L
02-Feb-06
LTW-02
POTASSIUM
4270J
UG/L
02-Feb-06
LTW-02
SODIUM
11100
UG/L
02-Feb-06
LTW-01
APFO
0,0333
UG/L
02-Feb-06
LTW-01
APFO (Trial)
0.0351
UG/L
02-Feb-06
LTW-01
CALCIUM
1860 J
UG/L
02-Feb-06
LTW_01
CHLORIDE
8260
250000
NCAC_2LGW-I/10
UG/L
02-Feb-06
LTW-01
FLUORIDE
210
2000
NCAC 2LG°A_1/10
UG/L
02-Feb-06
LTW-01
IODOMETHANE
0.18 J
UG/I..
02-Feb-06
LTW-01
IRON
3510
300
NCAC 2LGW_1/10
UG/L
02-Feb-06
LTW-01
MAGNESIUM
1240 J
UG/L
02-Feb-06
LTW-01
MANGANESE
182
50
NCAC 2LGW_1/10
UG/L
02-Feb-06
LTW^01
METHANE
3.9
UG/L
02-Feb-06
LTW-01
PFOA
0,032
2
NC IMAC
UG/L
02-Feb-06
LTW-01
PFOA(TRIAL)
0,0337
1 1
UG/L
18 of 21
DEQ-CFW 00046219

Appendix B: Table 1 Historical Site -Wade Groundwater Detections
Phase Ill RFI Work Plan (Rev, 1)
DuPont Fayetteville Facility
Fayetteville, NC
02-Feb-06
LTW-01
PHOSPHORUS
97.3 J
UGJI-.
02-Feb-06
LTW-01
POTASSIUM
1620J
UG/L
02-Feb-06
LTW-01
SODIUM
6390
UG/L
02-Feb-06
I LTW-05
CALCIUM
2750 J
UG/L
02-Feb-06
LTW-05
CHLORIDE
8980
250000
NCAC 2LG}t 1/10
UG; L
02-Feb-06
LTW-05
CHLOROFORM
0.35 J
70
NCAC 2LGW_1./10
�2LGW_1/10
UG/L
02-Feb-06
LTW-05
IRON
8550
300
NCAC
UG/L
02-Feb-06
LPN-05
MAGNESIUM
1550 J
LIGJL
02-Feb-06
LTW-05
MANGANESE
368
50
NCAC 2LGW1/10
UG/L
02-Feb-06
LPN-05
METHANE
130
UG/L
02-Feb-06
LTW-05
PHOSPHORUS
1161
UG/L
02-Feb-06
LTW-05
POTASSIUM
4060 J
UG/L
02-Feb-06
LTA'-05
SODIUM
9250
UG/L
02-Feb-06
LTW-05
SULFATE
26900
250000
NCAC 2LGW_1/10
UG/L
22-Feb-06
SMW-05P
APFO
6.5
UG/L
22-Feb-06
SMW-05P
APFO (Trial)
6.7
UG/L
22-Feb-06
SMW-05P
PFOA
6.3
2
IBC IMAC
UG/L
1.9-Oct-06
NAF-05A
1,2-DICHLOROETHANE
0,171
0A
NCAC 2LG'JU_1/10
UGJL
19-Oct-06
NAF-05A
APFO
0,16
UG/L
19-Oct-06
NAF-05A
APFO (Trial)
0,15
UG/L
19-Oct-06
NAF-05A
CALCIUM
946J
UG/L
19•Oct-06
NAF-05A
CHLORIDE
44900
250000
NCAC 2LGW 1/10
UG/L
19"Oct-06
NAF-05A
CIS-1,2 DICHLOROETHENE
0.54
70
NCAC�2LGW 1/10
UG/L
19-Oct-06
NAF-05A
COLOR QUALITATIVE (FIELD)
CLEAR
NS
19-Oct-06
NAF-05A
DEPTH TO WATER FROM TOC
NS
Feet
19-Oct-06
NAF-05A
DISSOLVED OXYGEN (FIELD)
930
UGJL
19-0ct-06
NAF-05A
ETHENE
0,49 J
UG/L
19-Oct-06
NAF-05A
FLUORIDE
3470
2000
NCAC 2LGW_1/10
UGJL
19-Oct-06
NAF-05A
IRON
44,5 J
300
NCAC_2LGW 1/10
UG/L
19-Oct-06
NAF-05A
MAGNESIUM
404J
UG/L
19-Oct-06
NAF-05A
MANGANESE
21
50
NCAC 2LGW_1/10
UG/L
19-Oct-06
NAF-05A
METHANE
13
UG/L
19-Oct-06
NAF-05A
ODOR (FIELD)
NONE
NS
19-Oct-06
I NAF-05A
OVA6ZONE
NS
PPM
19-2ct-06
NAF-05A
OVP,CASING
NS
PPf
19-Oct-06
NAF-05A
PFOA
0.15
2
NC IMAC
UG/L
19-Oct-06
NAF-05A
PFOA(TRIAL)
0,14
UG/L
19-Oct-06
NAF-05A
POTASSIUM
50500
UG/L
19-Oct-06
NAF-05A
SODIUM
21600
UGJL
19-00-06
NAF-05A
SULFATE
24400
250000
NCAC 2LGW_1/10
-2LGW1/10
UG/L
19'-Oct-06
NAF-05A
TETRACHLOROETHYLENE
6.1
0.7
NCAC
UG/L
19-Oct-06
NAF-05A
TOTAL ORGANIC CARBON
4960 J
UG/L
19-Oct-06
#NAF-05A
TOTAL WELL DEPTH
NS
Feet
19-Oct-06
NAF-05A
TRANS-I,2-DICHLOROETHENE
0.14J
100
NCAC 2LGW_1/10
�2LGW_1/10
UG/t.
19-Oct-06
NAF 05A
TRICHLOROETHENE
0,34J
3
NCAC
UG/L
12-Feb-07
S€viW-01
APFO
NQ (<0.0051)
UG/L
12-Feb-07
SMW-01
APFO (Trial)
NQ (<0.0051)
UG/L
12-Feb-07
S€VW_01
PFOA
NO (<0.0051)
2
NC IMAC
UG/l.
12-Feb-07
S€v1W-01
PFOA(TRIAL)
NO (<0,0051)
UG/L
13-Feb-07
LTW-04
APFO
NO (<0,0051)
UG/L
19 of 21.
DEQ-CFW 00046220

Appendix B; Table 1 Historical Site -Wide Groundwater Detections
Phase Ill RFI Work Plan (Rev. 1)
DuPont Fayetteville Facility
Fayetteville, IBC
�'��;'k$�?
;2$
f'k }# }'ts, �'.. i �
i% {y i#, d✓�.{
; ,:${
k.£'. < iT,
.hr
Ytyli
r
,^y`1r
13-Feb-07
LTW-04
APFO (Trial)
NQ (<0.0051)
UG/L
13-Feb-07
LTW-04
PFOA
NQ (<0.0051)
2
NC IMAC
uG/L
13-Feb-07
LTW-04
PFOA(TRIAL)
NQ (<OM51)
UG/L
13-Feb-07
LTW-01
APFO
0.037
UG/L
13-Feb-07
LTW-01
APFO
0.036
UG/L
1.3-Feb-07
LTW-01
APFO (Trial)
OD37
UG/L
13-Feb-07
LTW-01
APFO (Trial)
0.036
UG/L
13-Feb-07
LTW-01
PFOA
0.03E
2
NC IMAC
UG/L
13-Feb-07 I
LTW-01
PFOA
0,035
2
hit; IMAC
UG/L
13-Feb-07
LTW-01
PFOA(TRIAL)
0.036
UG/L
13-Feb-07
LTW-01
PFOA(TRIAL)
0,035
UG/L
14-Feb-07
MW-1S
APFO
0,05
UG/L
14-Feb-07
MW-1S
APFO (Trial)
0.05
UG/L
14-Feb-07
MW15
PFOA
0.048
2
NC IMAC
UG/L
14-Feb-07
MW-is
PFOA(TRIAL)
0.048
UG/L.
14-Feb-07
SMW-05P
APFO
17
UG/L
14-Feb-07
SMW-05P
APFO (Trial)
17
UG/L.
14-Feb-07
SMW-05P
PFOA
16
2
NC IMAC
UG/L
14-Feb-07
SmW_05P
PFOA(TRIAL)
16
UG/L
27-Feb-08
LTW-01
APFO
0.073
UG/L
27-Feb 08
LTW-01
APFO
0.069
UG/L
27-Feb-08
LTW-01
APFO (Trial)
0,073
UG/L
27-Feb-08
LTW-01
APFO (Trial)
0.066
UG/L
27-Feb-08
UM-01
PFOA
0.07
2
NC IMAC
UG/L
27-Feb-08
LTW-01
PFOA
0.066
2
IBC IMAC
UG/L
27-Feb-08
LTW-01
PFOA(TRIAL)
0.07
UG/L
27-Feb-08
LTW-01
PFOA(TRIAL)
0,063
UG/L
27-Feb-08
SMW-01
APFO
NQ (<0.011)
UG/L
27-Feb-08
SM%V-01
APFO (Trial)
NQ (<0.011)
UG/L
27-Feb-08
SMW-01
PFOA
NQ (<0;011)
2
NC IMAC
UG/L
27-Feb-08
SMW-01
PFOA(TRIAL)
NQ(<0.011)
UG/L
27-Feb-08
mW_1S
APFO
0.045
UG/L
27-Feb-08
MW-1S
APFO (Trial)
0,045
UG/L
27-Feb-08
MW-1S
PFOA
0.043
2
NC IMAC
UG/L
27-Feb-08
MW-15
PFOA(TRIAL)
0,043
UG/L
28-Feb-08
LTW-04
APFO
NQ (<0.011)
UG/L
28-Feb-08
LTW-04
APFO (Trial)
NQ (<0,011)
UG/L
28-Feb-08
LTW-04
PFOA
NQ (<0.011)
2
NC IMAC
UG/L
28-Feb-08
LTW-04
PFOA(TRIAL)
NQ (<0.011)
UG/L
28-Feb-08
SMW-05P
APFO
2.7
UG/L
28-Fein-08
SMW-05P
APFO (Trial)
2.7
UG/L
28-Feb-08
SMW-05P
PFOA
16
2
NC IMAC
UG/L
28-Feb-08
SMW-05P
PFOA(TRiAL
2.6
UG/L
25-Mar-09
LTW-01
APFO
0,057
UG/L
25-Mar-09 I
LTW-01
APFO
0.052
UG/L
25-Mar-09
I.TW-01
APFO (Trial)
0,057
UG/L
25-Mar-09
LTW-01
APFO (Trial)
0,052
UG/L
25-Mar-09
I-MI-01
PFOA
0.055
2
NC IMAC
UG/L
25-Mar-09
LTW-01
PFOA
0,05
2
NC IMAC
UG/L
25-Mar-09
LTW-01
PFOA(TRIAL)
0.055
UG/L
25-Mar-09
LTW-01
PFOA(TRIAL)
0.05
UG/L
26-Mar-09
LTW-04
APFO
NQ (<0.013)
UGjL
20 of 21
DEQ-CFW 00046221

Notes:
Appendix B: Table S Historical Site -Wide Groundwater Detections
Phase III RFiWork Plain (Rev, 1)
DuPont Fayetteville Facility
Fayetteville, NC
Nfl = Non -quantifiable
i = Analyte present. Reported value may not be accurate or precise. Should be considered an estimated value.
JGI€- = micrograms per Liter
NCAC_21-CM_IJ1.0 = North Carolina 2t.Groundwater Standards
NC IMAC = North Carolina interim Maximum Allowable Concentration
21 of 21
DEQ-CFW 00046222

Appendix B; Table 2 Historical Site -Wide Sall Detections
Phase III RFI Work Plan (Rev. 1)
DuPont Fayetteville Facility
Fayetteville, NC
MARROMS t of 8

Appendix ; Table 2 Historical Sate -Wide Sall Detections
Phase IN RFI Work Flan (Rev. 1)
DuPont Fayetteville Facility
Fayetteville, NC
2of8

Appendix B. Table 2 Historical Situ -Aide Seal Detections
Phase III RFI Work Plan (Rev. 1)
DuPont Fayetteville Facility
Fayetteville, NC
PAPIMMMINS 3©f&

0 0 0
Appendix B: Table 2 Historical Site -tilde Soil Detections
Phase III RFI Work Plan (Rev. 1)
DuPont Fayetteville Facility
Fayetteville, NC
MOAMMMS 4of8

0 0 0
Appendix B. Table 2 Historical Site -Wide Soil Detections
Phase III RFI Work Plan (Rev. 1)
DuPont Fayetteville Facility
Fayetteville, NC
5of8

Appendix B: Table 2 Historical Site -Wide Sail Detections
Phase III RFI Work Plan (Rev. 1)
DuPont Fayettevlile Facility
Fayetteville, NC
6of8

0 0 0
Appendix Be Table 2 Historical Site -Wide Sail [detections
Phase III RFI Work Plan (Rev. 1)
DuPont Fayetteville Facility
Fayetteville, NC
7of8

0 0 0
Notes:
Appendix B- Table 2 Historical Site -Wide Soil Detections
Phase M RFI Work Plan (Rev. 1)
DuPont Fayetteville Facility
Fayetteville, NC
BGS = Below Ground Surface
i = Analyte present. Reported valuL may not be accurate or precise. Should be considered an estimated value.
UG/KG = micrograms per kilogram
EPA SL IndSoil = EPA Industrial Regional Screening Level
MIUSONS 8 of 8

0 APPENDIX C
FORMER UST REMOVAL CORRESPONDENCE
1 m7-.1 - �zl
DEQ-CFW 00046231

0
L
:8 ..r.
E. i • aU PONT of NEMOURS COMPANY ' `march 19, 1990
1MC*fi. aTC®
P. 0. DRAWER Z
FAYETTEVILLE. N. C. 2a3og
POLYMER PRODUCTS DEPARTMV4T
Jim Bales
N.C. Dept. of Health, Env., And
Natural Resources
Wachovia Building, Suite 714
Fayetteville, N.C. r
This letter responds to your•
conversation last Friday and formally requests sampling and
closure instructions after removal of . - ,`r •
Within the next • months 1' ,two' ♦ : .
UG tanks • •.store and dispense diesel fuel and gasoline.
our plant and contract construction vehicles. A new, fully
contained# aboveground storage facility isbeing ! •:
Please inform us•the specific,documentation •sampling
requirementsneeded :.close
In addition, we removed three 12 year old tanks belonging
to Campbell oil company from our Agricultural Products test farm
area last April. reportofthat removal. our 1 Manager is
attached. According to Campbell Oil company, no samples
were taken. (one 1000 gal Diesel -Fuel Tank, one 1000 gal #2
Heating Oil Tank and one 1000 gal Gasoline Tank). Please instruct
us on closing
The removal .these five tanks will eliminate
underground fuel storage facilities from the site. We never have
• underground chemical storage
Sincerely
Vp-
Zz
Thomas W. olcott
Environmental Coordinator
[phone]
DEQ-CFW 00046232

es. s8el AEV. r-a2
3ON'T SAY T--tits T IT DATE 4/2h/89
To Tom Olaott
Dept.In the Agrieultrual Chemical _ there
tanks (metal) with a capacity of 1000 gals. each buried below ground.
on + •►• these tanks were removed and returned to Campbell Oil
Company - :► _ ::.+ before r after there
holesfor any sign of leaks and none were found, After the tanks were removed
the • r where thewere • inspected for
any sign of leakage and none was found, The outside of the tanks was
found to be in excellent condition by the people from the fuel companys
e"r^ dA VQ ern a near vna in nccr anrwimm r`ansmq Nn CTAFRTC
DEQ-CFW 00046233

a
;7
State of •
Department
FayetteAlle Regional
_; Office
Thaws W. Olcott
E. I. DuPont Do Nemours & Company
• ♦ Drawer
r7ayetteville, KC 28302
Notification • : UST Abandonment
Fayetteville,Located At The DuPont7acility
Cumberland
The Fayetteville Regional Off ice of the Divisionof Environmental
storagement has received -your notification for the planned abandonment of two (2)
located at the subject
After the subject underground storage tank(s) bav*e been removed or before
the tank(s) are abandoned in place, samples of undisturbed soil shall be taken
from two. feetbelow the bottomof d then tested for total
Petroleum fuel hydrocarbons -removal or abandonment
long.in place, soil samples shall be taken for TPFK below each and of, the tank if
the tank is less than 20"feet 0 feet or more in length,
a sample shall be taken at both ends and the middle of the tank from a depth
if 2 feet below the tank bottor.
For multiple
{ abandonments place or multipletank removals
from
the same tank f ield, a sample should be taken for TPFH at each corner and the
middle of the tank f ield from a depth of 2 feet below the tank bottom. At
least one soil sample, not composited, should be collected for every twenty
(20) feet of piping trench from the bottom of that trench. Analysis for TPFH
shall be conducted according to the procedures described in the attached
Analytical Procedures.
Wachovfa Builcilng. Suite 714 • Fayetteville. N.C. 28301-5043 + Telephone 919- -1541
An Equal opportunity AFBmmtaadve Acdon Employer
i
DEQ-CFW 00046234

Analytical Procedures
A. Total Petroleum Hydrocarbons
I. Laboratory Methodologies
Petroleum Product Methods
1. Low to medium California GC Method with
boiling point SW-846 Method 5030* (purge and
fuels including trap) as sample preparation.
gasoline, some
military jet
fuels, and,
gasohol.
2 High boiling California GC Method with
point fuels, in- SW-846 Method 5030* (purge and
cluding kerosene, trap) assample preparation,
other jet fuels, and California GC Method with
diesels, and fuel SW-846 Method 3550* (sonication
oil Nos. 1 and 2. extraction) as,sample prepara-
tion on split samples of the
soil.
3. Other petroleum SW-846 Method 9071*.
products, includ-
ing residual fuel
oils, lubricating
& cutting oils,
and hydraulic
fluids and
greases.
*The Detection Limit must be less than 10 ppm.
S
!I
Determinants
Total Petroleum Fue
Hydrocarbons in par
per million (ppm). I
* 94
Oil and Grease C
parts per milli
(ppm) - I
DEQ-CFW-00046235

August 22, 190 •
Dept.Mr. M. J. Noland, Regional Supervisor
ResourcesNatural
Wachovia Building, Suite 714
Fayetteville, N. C. 28301
Enclosed are the analytical results of jhe site
assessment associated with the removal of two underground
storage tanks from -Du Pontts Fayetteville
Works
(NCD047368642). A -map detailing approximate
• r . E: sample
All of the analytical results are below the 10 ppm
detection limit for total petroleum fuel hydrocarbons,
indicating that no contamination has occurred as a result of
using these _ and*their _ •:. hardware.
results are below the 10 ftp• r: limit, Site
Sensitivity Evaluation sheet ha's not been attached'.
removal
With the successful
underground storage tanks, Fayetteville Works no longer has
any underground storage tanks on -site. Should you have any
j;uestions or need additional information, please feel free
tocontact. ♦:
J i e1kw
Enclosure
CC: J. E. Nagle
N. P. Baumann
To
rs 1trulr
f'
ames r. Wallwork
Environmental Coordinator
DEQ-CFW 00046236

ESTABLISHED 1903
Main office
1111 Castle Stmet 919-762-M82 919-7624956
P.O. Box 629 FAX[phone]
Wilmington, N.C. 28402 REPORT DA32: 8-15-90
E.T. DUPONT DE NEMOURS & COMPANY
P.O. DRAWER Z
FAYETTEVILLE, N.C. 28302
ATTN: NELSON BAUM44W
DATE RECEIVED: , 8-08-90
DATE COLLECTED: 8-08-90
COLLECTED BY: LAW & C
LAB I.D. IF EW 30941
SAMPLE 'DESCRIPTION: - $OIL FROM TANK REMOVAL EXCAVATION SITE.
TESTS/SAMPLzs . UNITS
TOTAL PETROLEUM HYDROCARBON PPM -- <to* <to* �10*
TOTAL PETROLEUM FUEL HYDROCARBON •ppM < to* < to* < to* <10*
TESTS/SAMPLES --MjjTS #7 #9
TOTAL PETROLEUM HYDROCARBON PPM -- <10* < foit
TOTAL PETROLEUM FUEL HYDROCARBON
EPA METHOD # 5030 GAS CHROMATOGRAPH ( TPFH)
EPA METHOD 4 3550 GAS caomATOGRApH ( TpH)
DETECTION LIMITS - 10 PPM
BELOW DETECTION LIMITS
WOMMAT DIRECTOR
DEQ-CFW 00046237

01
ENGINEERING COMPUTATION SHEET
Tms'ar j. as Eruar Ufa MLt GJt 1--u 4 1 Iq
r 5 r
�i1MJfC4"Y' °"�O8 L.. d G N
+�` 1�t4h Y'EtwoV�..i
t; f z a 4 3 s ' a a- fa f1 ix t3 f• f3 " 6 i ®u s Qn4 D 22
0
f
4
s
a .
7
r
s • i
SomeT No
•
wonscs
Ll
13 m f4F
14 1
iY
23; - w iiidSE� +tSO'jIE
24. Ta,-k Tank
.-t
o
341
DEQ-CFW 00046238

7
srwr.
State of North Carolina
Department of Environment Health, and Natural Resources
Fayetteville Malonal Office
M. M\ M
August 27, 1990
Mr. James F. Wallwork
Environmental- Coordinator
DU Pont Polymer P'rodudts
P. 0. Drawer z
Fayetteville, North carolina 28302
SUBJECT: Review of Lab Results
UST Soil Assessment
Du Pont Fayetteville Works
Fayetteville, Cumberland Co.
This is to acknowledge receipt of the above mentioned soil assessment
dated August 27, 1990,
Based on review of the lab results, no additional soil excavation and removal is required. Should new information become available concerning this
matter, we reserve the right to reverse this finding.
Should you have any questions or need clarification, please contact a
member of the Groundwater staff of this office at [phone].
Sincerely,.
Noland,
Regional Supervisor
WaCh0VIa Building. Suite 714 0 Fayetteville. N.C. 28301-SO43 * Telephone [phone]
An 14ual Opportunity Affirmative Action Employer
DEQ-CFW-00046239

U
0m,
DuPontEn�igneering
Ms, Elizabeth W o Carmon, Chief
Hazardous Waste Section
Waste Management Division
401 t.:berlM Road, Suite 150
Raleigh, NC 27605
I3'Vow : n
6314
0
i }idi fi?tY:: 28210
APR 2
Apri 15, -101`I
Re- Phase III RCRA Facility Investigation W rk Plan (Rev. I)
Du Po t Fayetteville Works
Fayetteville, North Carolina
A ll) No. NCD 047 368 642
Dear GIs. Cannon.
Enclosed please: final responses to the commc is provided by Nt."DI:;NR in the'NOD for Phase
HT RCRA Facility Investigation Work Plan (dated ,lnnuar -5, 2011), alonl with three (3) copies
of the Please Ill RCRA , acility Investigation ation Work Plan (Rev. 1) for the above -referenced Site,
'['he revised work. plain addresses the comments provided by NCDENR in the OD letter.
Dumont looks forward to working with you through the completion of the RFL
If'you have any questions or need additional information please feel free to contact nee at 704
3621-6626,
Sincerely,
s
1a nie VanBuskirk
Project Director
DuPont Corporate Remed:iat on Group
cc. Mike Johnson - DuPont Fayetteville Works
File
Enclosures
DEQ-CFW 00046240