DEQp00020847

1
SOC PRIORITY PROJECT: Yes No _x_
If yes, SOC No. _x
To: Attention: Greg Nizich
Permits and Engineering Unit
Water Quality Section
February 21, 1996
NPDES STAFF REPORT AND RECOMMENDATIONS
County Bladen
Permit No. NC0003573
PART I. GENERAL INFORMATION
1.B• Facility and Address: E.I. DuPont de Nemours & Co., Inc.
P.O. Drawer Z
Fayetteville, North Carolina 28302
2. Date of Investigation: January 25, 1996
3. Report Prepared By: Ken Averitte, FRO
4. Persons Contacted and Telephone Number: Mr. Michael Johnson,
Environmental Coordinator
E.I. DuPont, Fayetteville Works
[phone]
Mr. Robert Geddie, ORC
[phone]
5. Directions to Site: This facility is located at the Bladen -Cumberland
County line, between Highway 87 and the Cape Fear River.
6. Discharge Point(s), List for all discharge points:
Latitude: 340 49' 52" Longitude: 780 49' 00"
Attach a USGS map extract and indicate treatment facility site and
discharge point on map.
USGS Quad No.: H 23 SE USGS Quad Name: Duart, NC
7. Site size and expansion area consistent with application?
X_ Yes No (If no, explain)
DuPont owns approximately 2,600 acres at this site.
S. Topography (relationship to flood plain included): Relatively flat.

9. Location of nearest dwelling: None within 1,000 feet.
10. Receiving stream or affected surface waters: UT to the Cape Fear River
a. Classification: C
b. River Basin and Subbasin No.: 030616
C. Describe receiving stream features and pertinent downstream uses:
The combined waste discharges from this facility flow in a wood
lined channel installed as an effluent and storm water conveyance.
This combined flow discharges over a fabri-formed concrete lined
ditch until velocities are diminished and thence to the UT. Under
normal (dry) conditions, this facility produces most of the flow in
the UT. The Cape Fear River is located approximately 2500 feet
downstream. (The discharge point has historically been indicated as
the main stem of the Cape Fear River.)
PART II - DESCRIPTION OF DISCBARGE AND TREATMENT WORKS
1. a. Volume of Wastewater to be permitted: 2.0 MGD (Ultimate Design
Capacity) of the treatment plant, discharge point 001. A separate
discharge (002) is not flow limited.
b. What is the current permitted capacity of the Wastewater Treatment
facility? 2.0 MGD
C. Actual treatment capacity of the current facility (current design
capacity). 2.0 MGD
d. Date(s) and construction activities allowed by previous
Authorizations to Construct issued in the previous two (2) years.
The permit was modified in 1995 to include boiler blowdown and once
through cooling water from an adjacent solid waste incinerator.
e. Please provide a description of existing or substantially
constructed wastewater treatment facilities. The waste treatment
system, as described in the application, includes a .75 MG aerated
flow equalization basin plus a .175 MG emergency retention basin for
unsuitable wastewater, a .25 MG aerated pre -digester tank, nutrient
feed, a 1.70 MG aeration tank, two clarifiers, effluent flow
measurement, a DAF unit (out of service at the time), a rotary
filter for sludge thickening, a sludge press and steam heated sludge
dryers.
f. Please provide a description of proposed wastewater treatment
facilities: none anticipated.
g. Possible toxic impacts to surface waters: Properly operated, this
facility poses little toxicity threat.
h. Pretreatment Program (POTWs only): N/A
In development Approved
Should be required Not needed

a
2. Residuals handling and utilization/disposal scheme:
a. if residuals are being land applied, please specify DEM Permit
No. .
Residual Contractor
Telephone No.
b. Residuals stabilization: PSRP PFRP .� Other
C. Landfill: The dried sludge produced at this facility is shipped to
the BFI, Inc., Subtitle D landfill located east of Roseboro in
Sampson County.
d. Other disposal/utilization scheme (Specify):
3. Treatment plant classification (attach completed rating sheet): IV
4. SIC Code(s): 2821, 2869, 3083, 3081, 4939
Wastewater Code(s) of actual wastewater, not particular facilities; i.e.,
non -contact cooling water discharge from a metal plating company would be
14, not 56.
Primary _14Secondary _22_ 02_ _36_
Main Treatm_ent Unit Code: 05901_ _ _ _ _
PART III - OTHER PERTINENT INFORMATION
1. Is this facility being constructed with Construction Grants Funds or are
any public monies involved (municipals only)? n/a
2. Special monitoring or limitations (including toxicity) requests: none
3. Important SOC, JOC, or Compliance Schedule dates (please indicate):
Date
Submission of Plans and Specifications . . . . . . . .
Begin Construction . . . . . . .
Complete Construction . . . . . . . . . . . . . . . .
4. Alternative Analysis Evaluation: Has the facility evaluated all of the
nondischarge options available. Please provide regional perspective for
each option evaluated.
Spray Irrigation: not practical
Connection to Regional Sewer System: not available
Subsurface: not practical
other disposal options: none known

5. Other Special Items: This facility has previously been rated a class III
wastewater treatment plant. Under the newest rating system, it scored at
least 69 points, moving into the class IV category.
PART IV — EVALUATION AND RECOMMENDATION
It is the recommendation of this office that NC0003573 be reissued for an
additional five year period. Since this facility has been re-evaluated and is
considered a Class IV WWTP, the monitoring and operational requirements for
that plant classification should be included. The proposed changes have been
discussed with the ORC, Mr. Robert Geddie.
Signatur of Report Preparer
Water Quality Regional Supervisor
Date