NCS000149_Rescission Request_19991011

DuPont Fluoroproducts
22828 NC Highway 87 W
Fayetteville, NC 28306-7332
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Mr. Antonio V. Evans
NCDENR — Division of Water Quality
Stormwater and General Permits Unit
P. O. Box 29535
Raleigh, NC 27626-0535
SUBJECT: Request to Rescind NPDES Stormwater Permit
NPDES Permit No. NCS000149
Dear. Mr. Evans,
The DuPont — Fayetteville Works hereby requests that the NCDENR Division of Water Quality
rescind the subject NPDES Stormwater Discharge Permit. If your division grants this request,
DuPont would appreciate to receive a written confirmation from DWQ so that we would know if
and when our activities associated with the requirements of the stormwater permit can stop.
When DuPont originally applied for the subject permit, it was believed that there were three
separate stormwater outfalls on this site that would be subject to the requirements of the NPDES
stormwater permitting regulations. Over time, with assistance from the NCDENR DWQ
Stormwater Unit, DuPont has made the following determinations to back this request:
• Outfall 002 is the final effluent outfall regulated by this site's NPDES Wastewater
Discharge Permit (NCo003573), which has more restrictive monitoring requirements .than
the NCS000149 permit. Additionally, stormwater comprises a virtually immeasurable
fraction of the Outfall 002 daily flow. Therefore, this outfall need not be regulated by a
separate stormwater permit.
• Outfall 004 receives stormwater runoff from a Solid Waste Management Unit (SWMU)
regulated by the Division of Waste Management. This SWMU is an area where
construction debris from the original facility construction was buried in an underground pit
in 1970. Given the inert nature of the buried material, DWM has give this particular
SWMU a ruling of "no further action" in the site's corrective action program. The belief
that there is no impairment of stormwater from this area is supported by the analytical and
visual monitoring that has been conducted during the past five years. Therefore,
Outfall 004 is not receiving stormwater runoff from an area of industrial activity, and is not
subject to the NPDES stormwater regulations.
• Outfall 005 is only sheet runoff to the Cape Fear River and is therefore not subject to the
NPDES stormwater regulations.
E. I. du Pont de Nemours and Company ® Printed on Recycled Paper
FL-4 Rev.6/99

On October 4, 1999, DuPont sent a remittance of $715.00 to. NCDENR DWQ for the annual
permit fee. This fee covers the period from 8/ 1 /99 to 7/31 /00. If the request to rescind the
subject permit is granted, DuPont requests that NCDENR return a portion of the submitted fee,
representing the nine months (November 1999 through July 2000) that the permit will no longer
be in effect following the rescindment. This amount should be approximately $536.00.
DuPont apologizes for allowing the permit fee remittance to be. sent to NCDENR prior to
resolving this issue.
If you have any questions, please feel free to call me at [phone].
Environmental Coordinator
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