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DuPont Automotive
CERTIFIED MAIL -RETURN RECEIPT REQUESTED
Mr. Gregory Nizich
NC DEHNR - DEM
Water Quality Section - Permits Unit
512 N. Salisbury St. - Office 925
Raleigh, NC 27626
RE: NPDES Permit No. NC0003573
Comments to Instream Monitoring Requirements
Dear Mr. Nizich,
DuPont Automotive
P,O. Drawer Z
Fayetteville, NC 28302
July 22, 1996
This letter addresses the new instream monitoring requirements proposed in the FAX received
from you dated July 18, 1996. We propose that the instream monitoring requirements be
modified as outlined below.
As we discussed on the telephone, the indication of "daily" monitoring of temperature for the
upstream and downstream samples was a typographical error, and should have been set at the
same frequency as for the dissolved oxygen and conductivity.
UPSTREAM MONITORING REQUIREMENT
Currently, the Fayetteville Public Works Commission (PWC) uses our River Pump Station as the
location to collect their downstream sample (Discharge No. 001) for the Rockfish Treatment
Facility (Permit No. C0050105). The distance from that point to the proposed instream sample
location for this site is less than one mile, with no other discharges between the two locations.
We request that the DuPont -Fayetteville Works upstream location be changed to our River
Pump Station, and that the parameters be changed to only the monthly fluoride monitoring. The
DuPont - Fayetteville Works upstream monitoring of temperature, conductivity, and dissolved
oxygen would be accomplished through the current monitoring of those parameters by the PWC
at their downstream sample location for the Rockfish Treatment Facility.
E. I. du Pont de Nemours and Company ®Printed on Recycled Paper
FF -9522 Rev 5/93
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Mr. Gregory Nizich Page 2
DEHNR-DEM
July 22, 1996
DOWNSTREAM MONITORING REQUIREMENT
The proposed location for the DuPont -Fayetteville Works downstream monitoring stated in the
draft permit is at Prospect Hall Landing. This location is not appropriate because it is located on
private property whose owner forbids access to that location with regular on -road vehicles, and
because Prospect Hall Landing is approximately thirty feet above the level of the Cape Fear
River, and would require the sampler to descend steep, unsafe terrain to reach the river.
As an alternative, we request that the downstream location be changed to the boat ramp located
approximately 4,500 feet downstream of Prospect Hall Landing. This boat ramp is also on
private property, but we have received the owner's approval for our access to and use of the boat
ramp to sample the Cape Fear River.
Should you have any questions regarding these comments, please feel free to call me at
(910) 6784155.
Michael E. Johnson
Environmental Coordinator