NC0027103_NPDES Permit Renewal_20140206

To:
Attention:
Date:
Complex Permitting Section
Point Source Branch
Tom Belnick
February 6, 2014
NPDES STAFF REPORT AND RECOMMENDATION
COUNTY: Robeson
Permit No.: NC0027103
PART 1— GENERAL INFORMATION
1. Facility and Address:
Pembroke Wastewater Treatment Plant
PO Box 866
8257 Deep Branch Road
Pembroke, NC 28372
2. Date of Investigation: February 6, 2014
3. Report Prepared by: Mark Brantley, Environmental Senior Specialist, FRO
4. Person Contacted and Telephone Number:
Rhonda Locklear [phone]
5. Directions to Site:
From Fayetteville, travel on Hwy 95 South, pass through Lumberton, then turn right on
Exit 17 (Hwy 711). Turn left onto Deep Branch Road (immediately after passing the
Department of Correction facility, travel straight approximately five miles. The
Pembroke Wastewater Treatment Plant will be on the left.
6. Discharge Point(s), List for all discharge points:
'Latitude: 34°39'55" N Longitude: 79°12'00" W
Attach a U.S.G.S. map extract and indicate the treatment facility site and the discharge point on
the map.
U.S.G.S. Quad No.
U.S.G.S. Quad Name:
I 22 NW
Pembroke, N.C.

7. Site size and expansion area consistent with the application?
Yes.
8. Receiving stream or affected surface waters:
a. Classification: ,umber River Index Number 14-(7) Primary Classification WS-IV, B
Secondary Classification Sw, HQW
b. River Basin No. Lumber River 03-07-51 and Sub basin No.:
LUM51
c. Describe receiving stream features and the pertinent downstream uses:
It is classified as Class WS-IV, B, Sw, HQW waters, which promotes aquatic life
propagation and survival, fishing, wildlife, primary recreation, and agriculture,
and waters used as sources for potable water supply.
PART II - DISCRIPTION OF WASTES AND TREATMENT WORKS
Volume of wastewater to be permitted:
(Ultimate Design Capacity)
What is the current permitted capacity of the Wastewater Treatment facility?
1.33 MGD
1.33 MGD
Actual treatment capacity of the current facility (current design capacity)?
1.33 MGD
Please provide a description of the existing or substantially constructed
wastewater treatment facility:
The raw wastewater flows into the Influent Pump Station, then through a
Mechanical Bar Screen (or a Manual bar screen), and then into Pre -aeration and
Grit/Grease removal. It then flows through a splitter box into one of two
oxidation ditches and one of two clarifiers. Then it flows into the chlorine
contact chamber and dechlorination, and finally the Cascade Step Aeration. The
facility has a 500,000 gallon digester. Sludge is aerobically digested. Once the
digester is full and decanting is complete the sludge is disposed of through
Atlantic Dewatering for composting.
e. Possible toxic impacts to the surface waters:
None
2. Residuals handling and utilizing/disposal scheme:
a. If residuals are being land applied, please specify the DWQ Permit No.
Residual Contractor:
'Atlantic Dewatering

Telephone:
b. Residual stabilization:
c. Landfill:
NIP4
N/A
f. Other disposal/utilization scheme (specify):
N/A1
3. Treatment plant classification (attach completed rating sheet):
4. Alternative Analysis Evaluation:
Has the facility evaluated all of the non -discharge options available?
regional perspective for each of the options that were evaluated.
Connection to Regional Sewer System:
Land Application:
Water Reuse:
none evaluated
none evaluated
none evaluated
Please provide the
PART IV — EVALUATION AND RECOMMENDATIONS
1. The applicant is not requesting modification of the facility or increasing flow at this time.
2. A review of the compliance data did not reveal any significant violations.
3. All units were in service based upon the previous Compliance Evaluation Inspection
(CEI) that was conducted on February 6, 2014,.
4. Based upon the above information, this Office recommends reissuance of the said permit
for the continued operation of an existing 1.33 MGD wastewater treatment facility
consisting of influent pumps, mechanical bar screen, grit chamber, Dual oxidation
ditches, Dual clarifiers, Chlorine contact chamber, Dechlorination, Cascade aeration, and
Sludge digester located at the Pembroke Wastewater Treatment plant, southeast of the
Town of Pembroke, in Robeson County.