DEQp00021059

DuPont Fluoroproducts
Mr. David Goodrich
NCDENR — DWQ
Permits & Engineering Unit
P. O. Box 29535
Raleigh, NC 27626-0535
RE: NPDES Permit No. NC0003573
Dear Gentlemen:
Mr. Paul Rawls
NCDENR —DWQ
225 Green Street
Suite 714
Fayetteville, NC 28301
DuPont Fluoroproducts
22828 NC Highway 87 W
Fayetteville, NC 28306-7332
This letter is a notification to you of a proposed change to the DuPont — Fayetteville Works
wastewater routing system. The change will not alter the composition, monitoring, or reporting
of this site's final effluent water quality.
As part of major expansion at this site, a trench system that conveys non -contact cooling
water from the Nafion® manufacturing area to our woodlined ditch upstream of Outfall 002
needs to have to its slope changed. This change in slope would result in the pipe conveying the
treated Outfall 001 effluent to the same woodlined ditch being suspended in air above the trench,
versus its current status of running underground beneath the trench.
To deal with this situation, we are planning to have the pipe conveying the Outfall 001
effluent empty into the trench, commingle with the non -contact cooling water of the trench, and a
new pipe system would then convey the combined water stream to the woodlined ditch and
ultimately to Outfall 002.
Since this change is downstream of Outfall 001, the requirements for Outfall 001 would be
completely unaffected. Also, as the two water streams affected by the change are currently
discharged into the woodlined ditch and completely mixed before reaching Outfall 002, the
requirements for Outfall 002 would be completely unaffected by this change.
Ifyou have any questions, please feel free to call me at [phone].
Sincerely,
Michael'E. Johnson
Environmental Coordinator
cc: Ms Kitty Kramer, NCDENR Division of Water Quality, Fayetteville
Mr. Tom Belnick, NCDENR Division of Water Quality, Raleigh
E. I. du Pont de Nemours and Company ® Printed on Recycled Paper
FL -4 Rev. 6/99

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