DEQ-CFW_00026629

Hazardous Waste Section
File Room Document Transmittal Sheet
M
Your Name: Larry Stanley
EPA ID: N C D 0 4 7 3 6 8 6 4 2
Facility Name:
DuPont Fayetteville
Document Group:
Groundwater (GW)
Document Type:
Groundwater Monitoring Report (GMR)
Description:
Revised 2012 PFOA groundwater data
Date of Doc:
2/26/2013
File Room Use Only- - -------------- NCD047368642
Month Day Year
Date Recieved by File Room:
Scanner's Initials:
Date Scanned:
DEQ-CFW-00026629

WS
Mr. Larry Stanley
NC Division of Waste Management
Hazardous Waste Section
1646 Mail Service Center
Raleigh, NC 27699-1646
SUBJECT- Revised 2012 Groundwater Data Transmittal
DuPont Company — Fayetteville Works
Permit No. NCD 047 368 642
Dear Mr. Stanley:
DuPont Fluoroproducts
22828 NC 87 Highway West
Fayetteville, NC 28306-7332
February 26, 2013
On August 28, 2012, the DuPont Company — Fayetteville Works submitted to you the on -site
groundwater monitoring results for the compound perfluorooctanoic acid ("PFOA") from the
sampling event in March 2012. It was subsequently discovered that these results were in error.
These erroneous sample results were generated using an elevated calibration range during
laboratory confirmation analysis so that non -detect (ND) results, for example, were non -detect at
an elevated level. The reporting limits provided were questionable in light of the elevated
calibration range used during confirmation analysis.
The attached Table I shows the corrected March 2012 groundwater monitoring results.
Please feel free to call me at 910-678-1155 if you have any questions.
Environmental Manager
Attachment
cc: Jamie VanBuskirk, DuPont CRG, Charlotte
Jenny Liu, DuPont, Wilmington, DE
Laurence Libelo, EPA, Washington DC (via Email to [e-mail])
E.I. do Pont do Nemours and Company
DEQ-CFW-00026630

DuPont Company — Fayetteville Works
Sample ID
Monitoring
PFOA
(Samele Description)
Date
la/L
Onsite monitoring well located near the facility's eastern property
03-13-2012
0.078
line along the Cape Fear River in the surficial groundwater; east of
the PPA Manufacturing Facility.
Onsite monitoring well located near the facility's eastern property
03-13-2012
Not Detected
line along the Cape Fear River in the surficial groundwater; east-
(<0.003 1)
southeast of the PPA Manufacturing Facility.
Onsite monitoring well located near the facility's eastern property
03-14-2012
Not Detected
line along the Cape Fear River in the surficial groundwater; east-
(<0.003 1)
southeast of the PPA Manufacturing Facility.
Onsite monitoring well located near the facility's eastern property
03-14-2012
Not Detected
line along the Cape Fear River in the surficial groundwater;
(<0.003 1)
southeast of the PPA Manufacturing Facility.
Onsite monitoring well located near the facility's eastern property
03-14-2012
Not Detected
line along the Cape Fear River in the surficial groundwater;
(<0.003 1)
southeast of the PPA Manufacturing Facility.
INS ITU #I Shallow
Onsite monitoring well located near the facility's northern property
03-13-2012
Not Detected
line in the upper level of the surficial groundwater; north-northeast
(<0.003 1)
of the PPA Manufacturing Facility.
Onsite monitoring well located near the inactive Biosludge Lagoon
03-14-2012
0.050
area in the perched groundwater above a local clay feature; south of
the PPA Manufacturing Facility.
Onsite monitoring well located east of the Construction Gate
03-13-2012
<0.015
entrance near Highway 87 in the surficial aquifer; southwest of the
PPA Manufacturing Facility.
Onsite monitoring well located north of and adjacent to the PPA
03-15-2012
0.41
Manufacturing Facility, in the surficial groundwater beneath a local
Analytical results are expressed in micrograms per liter (gg/L) or parts per billion (ppb).
OEQ-CFVV_00026631