NC0046043_Wasteload Allocation_19960227

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Staff Review and Evaluation
NPDES Wastewater Permit
FACILITY INFORMATION
Facility Oak Ridge Military Academy
NPDES No. NCO046043
Design Flow (MGD) 0.04
Facility Class II
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STREAM CHARACTERISTICS
Receiving Stream:
UT Haw River
Stream Class
C-NSW
Sub -basin
030601
Drainage Area (mS2)
0.35
S7Q10 (cfs)
0.0
W7Q10 (cfs)
0.35
30Q2 (cfs)
0.07
IWC (%)
100
' F9
2
Proposed Changes
Parameters Affected
Basis for change(s)
Monitoring Frequencies
BOD5, TSS, NH3, TRC
2B .0500 Regulations
Stream classification
from WS-III NSW to C-NSW
correction for stream index
16-(1)
Compliance Schedule:
Special Condition(s): STANDARD CONDITION FOR DISCHARGES TO NSW WATERS.
Permits & Engineering Comments:
Recommend renewal of NPDES permit with existing limits. Receiving stream incorrectly
classified in last permit. The correct classification is C-NSW. Monthly monitoring reports
indicate extremely high chlorine levels-1.0 mg/1 average with a max. of 3.5 mg/l. Instream
monitoring data do not indicate any problems. Region: Please comment on the appropriateness
of adding a chlorine limit and requiring dechlorination for this facility.
Regional Office Evaluation and Recommendations:
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cc: Permits and Engineering
Technical Support Branch
County Health Department
Central Files
WSRO
SOC PRIORITY PROJECT: YES _ NO X
IF Yes, SOC No. -
To: Permits and Engineering Unit
Water Quality Section
Attention: Jay Lucas (Review Engineer)
AUTHORIZATION TO CONSTRUCT
NPDES PERMIT REPORT AND RECOMMENDATIONS
Date: 940624
County: Guilford
Permit No. NC: NCO046043
PART I - GENERAL INFORMATION
1.
2.
3.
4.
Facility Name and Current Address:
Col. Fred Kennedy, President
Oak Ridge Military Academy
Hwy. 150
Oak Ridge, NC 27310
Date of most recent NPDES Staff Report: (attach copy) 910308
Changes since previous action on NPDES Permit: Unknown.
Verify Discharge Point(s) on plans with current NPDES Permit. List for all discharge
points.
Latitude: 36° 10'46"
Longitude: 79°50' 14"
Attach a USGS map extract and indicate treatment facility site and discharge point on
map.
U.S.G.S. Quad No. C19NW U.S.G.S. Name Summerfield
5. Treatment plant classification: (attach completed rating sheet) II

T PART II - DESCRIPTION OF DISCHARGE AND TREATMENT WORKS
1. Existing treatment facility
a. What is the current permitted capacity of the facility?
0.040 MGD
b. Date(s) and construction activities allowed by previous Authorizations to
Construct issued in the previous two (2) years: None known.
c: What is the actual treatment capacity of the current facility (design volume)?
0.040 MGD
d. Please provide a description of existing or substantially constructed wastewater
treatment facilities. (see attached Staff report)
2. Please provide a description of proposed wastewater treatment facilities:
A fiberglass divider wall is in place at the present time. This construction will
permanently install a divider wall to form an aerated digester at the head of the
plant.
3. Residuals handling and utilization/disposal scheme:
a. If residuals are being land applies, please specify DEM permit no.
Greensboro WWTP @ North Buffalo Creek (NPDES NC0024325)
Residual Contractor: Solids are sent to a POTW by the ORC through a contract
hauler (hauler may vary).
Telephone No. [phone] (Greensboro WWTPs)
b. Residuals stabilization: PSRP — PFRP Other X
C. Landfill: NA
d. Other disposal/utilization scheme (Specify):
4. Important SOC, JOC or Compliance Schedule dates, if applicable: (Please indicate)
Submission of Plans and Specifications NA
Begin Construction NA
Complete Construction NA

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PART III - EVALUATION AND RECOMMENDATIONS
While this work is being accomplished, the permittee and operator should also consider
providing for future dechlorination or alternate disinfection processes. The permittee and
operator should provide for year-round potable water with a freeze -proof spigot at the WWTP.
Consideration should also be given to increasing the sizing of any grease traps associated with
food preparation facilities. Improved pumper truck access is highly recommended. Additional
handrails and grates may be needed at the WWTP to comply with OSHA requirements when
these improvements are made.
WSRO recommends that the A-C be issued providing the above conditions are appropriately
addressed.
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Signature of report preparer
ater Qu Supervisor
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