DEQ-CFW_00027193

Hazardous Waste Section
File Room Document Transmittal Sheet
Your Name: Lam, Stanley
EPA ID: N C D 0 4 7 3 6 8 6 4 2
Facility Name: DuPont - .Fayetteville
Document Group: Corrective Action (CA)
Document J'ype: RCRA Facility Investigation (RFl)
Description: 4th quarter 2013 Phase III RFI progress report update
Date of Doc: 11/22/Ml3
Author of Doc: DuPont CRG
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DEQ-CFW-00027193

DuPont Engineering
6324 Fairview Road
Charbite, NC 28210
Tel '704 J 362-6630
Fax [phone]
November 22, 2613
Ms. Elizabeth W. Cannon, Chief
Hazardous Waste Section, Division of Waste Management
North Carolina department of Environment and Natural Resources
1646 Mail Service Center
Raleigh, NC 2769-146
rE: FOURTH QUARTER 0PHASE PROGRESS OUPDATE
DUPONT
Dear Ms. Cannon:
This letter provides an update on the status of implementing the Phase Ili Resource
Conservation and Recovery fist (RCRA) Facility Investigation (RFI) Mork Plan at the
E.I. du Pont de Nemours and Company (DuPont) Fayetteville Works facility (Site)
located in Fayetteville, North Carolina. The phase [if RFI Work Plan (revision 1,
dated April 5, 2611) was approved by the North Carolina Department of Environment
and Natural Resources (NCDENR) in a letter dated December 2, 2611.
Due to the specific data gaps left in the investigation, certain objectives of the
Phase Ill RFI had to be completed and the data analyzed prior to the implementation
of the field investigation for other objectives. The Phase III RFI, therefore, was
implemented in a "staged" approach. Stage 1 of the investigation consisted of further
delineation of the perimeter of the clay lens in the northern and western portions of
the Site. The Stage 1 field activities were completed in August 2012, and the details
of these activities were presented in a Stage 1 Technical Memorandum submitted to
NCDENR on November 7, 2012.
The Stage 1 investigation results were used to establish the path forward for Stage 2
of the investigation. Details about the specific activities developed to meet the Stage
2 objectives (including providing specific locations where the proposed new
permanent monitoring wells would be installed) were included in the Stage 1
Technical Memorandum, The memorandum also provided information pertaining to
supplemental activities to address several potential releases to the environment that
have occurred at the Site since March 2011. The Stage 1 Technical Memorandum
was approved by NCDENR in a letter dated December 7, 2012 and served as an
addendum to the approved Phase III RFI Work Plan (Rev. 1).
DEQ-CFW 00027194

Page 2
November 22, 2013
Ms, Elizabeth W. Cannon
The project team began implementation of the Stage 2 Phase III RFI Meld activities in
March 2013, and the majority of the field Work was completed in early August 2013.
The team returned to the Site in early October 2013 to finalize a few remaining field
tasks. These tasks included the collection of samples from the two monitoring wells
(although one Was dry) that are only accessible When operations in the area are shut
down for annual maintenance (the Wells are in the blast zone), supplemental
confirmation groundwater sampling, and an additional round of synoptic gauging of
groundwater elevations from the expanded monitoring Well network.
The team has now received the finalized data from all of the Phase III RFI sampling
efforts Conducted this year at the Site, and preparation of the final Phase III RFI report
is currently underway, As discussed in email correspondence With NCDENR from
September 18, 2013, none of the analytical data is included With this letter report; the
project team Will instead include the complete Phase III RFI analytical results as part
of the Phase III RFI report.
Lkemaining 'Schedule
As outlined in the previous Phase III RFI Progress Report Update letter, the Current
schedule calls for the final Phase III RFI report to be submitted by January 31, 2014,
The project is on -track to adhere to this schedule.
If you have any questions or Comments, please do not hesitate to contact me via
email at Jam ie.A.Vanbuskirk a],usa.du pont.corn or at (704) 2- 62 .
Sincerely,
Jamie VanBuskirk
Project Director, DuPont Corporate Remediation Group
cc: Mr. Larry Stanley -- NCDENR, Hazardous Waste Section
Ms. Tracy Ovbey — Parsons Environment & Infrastructure
Mr.. Michael Johnson — DuPont Fayetteville Works
File
DEQ-CFW 00027195