NC0036919_Wasteload Allocation_19911202

NPDES DOCUMENT SCANNINS COVER SHEET
NPDES Permit:
NC0036919
Pantego WWTP
Document Type:
Permit Issuance
Wasteload Allocation
Authorization to Construct (AtC)
Permit Modification
Complete File - Historical
Engineering Alternatives (EAA)
Correspondence
Instream Assessment (67b)
Speculative Limits
Environmental Assessment (EA)
Document Date:
December 2, 1991
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content on the reirerse oide

6_'CAyjl )' e, r �� c� b� '� �� e-5j4 �c IDES WASTE LOAD ALLOCATION
PERMIT NO.: NCO036919
PERMITTEE NAME: Beaufort County Elementary School
FACILITY NAME: Beaufort County Elem. School
Facility Status: Existing
Permit Status: Renewal
Major _
Pipe No.:
11
Minor `1
Design Capacity: 0.006 MGD
Domestic (% of Flow): 100 %
Industrial (% of Flow):
Comments: Refer : Basinwide / Streamline WLA File
Completed By Permits & Engineering
At Front Of Subbasin
U-r
RECEIVING STREAM: Pantego Creek
Class: SC -Swamp NSy.1
Sub -Basin: 03-03-07
Reference USGS Quad: E32S W (please attach)
County: Beaufort
Regional Office: Washington Regional Office
Previous Exp. Date: 00/00/00 Treatment Plant Class: I
Classification changes within three miles:
No change within three miles.
Requested by: Randy Kepler Date: 10/9/91
wa Prepared by: Ac,__ _i-y • e Date: k1 IZJ5 AI
Reviewed by: Date: G
/Z
Modeler Date Rec. #
SAW to 1 z
Drainage Area (mi2 ) Avg. Streamflow (cfs): ° o
O- o
7Q10 (cfs) I I cAL- Winter 7Q10 (cfs) o . 0 30Q2 (cfs) °'
Toxicity Limits: IWC 01b Acute/Chronic
Instream Monitoring:
Parameters R"L Co LI 197nPERATu2C (o A1WC-1_IVLTJ
Upstream y Location AT L6Asr IGoJ ttysTaSAAJ,
Downstream Y Location A LrarT 3ctf rvv1w-s R AAk
(A) CI5)
Effluent
Characteristics
1 hr TNEEE 46A s
w,-
AFr> rz TtlaM It
AJ
BOD5 (mg/1)
30 3C3
5A 0
NH3-N (mg/1)
1/1-6
D.O. (mg/1)
6 (o
TSS (mg/1)
0
30 30
F. Col. (/100 ml)
20o Zoo
20o 17,00
eT.
13
c
/n 0 •
3 9S
1?1
Un TTt
n
8 am
Comments: n sc, *"9 Is Ta A wwo goyi syrrAM. kgcommwy MAWURL. /
✓ -ILIT4 M,tbr SuBMtT MI t?AIC VL. 9EOo2T 01TAW IZ A. MS. 5ROWIM4 No
A1,16W T1VS -To Thl;( .AR4b. 610 L ITy 01 LL W_JE\,JE EX 1,Tf AIG LIMIT$ f* 1ST
'rtt CEE \teArS RAID MORb 57r2txk[r MT UMITS ARe/-'111REE. YEARS.

Facility Name:
NPDES No.:
Type of Waste:
Facility Status:
Permit Status:
Receiving Stream:
Stream Classification:
Subbasin:
County:
Regional Office:
Requestor:
Date of Request:
Topo Quad:
FACT SHEET FOR WASTELOAD ALLOCATION
Request # 6492
Beaufort Co. Elementary School
NCO036919
Domestic - 100% ,`Dv
Existing
Renewal
UT Pantego Creek ^�
SC-Sw-NSW
030307
Beaufort Stream Characteristic: o
WaRO USGS # "
R. Kepler Date: F
10/9/91 Drainage Area (mi2):
E32SW Summer 7Q10 (cfs): Tidal - 0.0 cfs
Winter 7Q10 (cfs):
Average Flow (cfs):
30Q2 (cfs):
IWC (%): 100.0
Wasteload Allocation Summary
(approach taken, correspondence with region, EPA, etc.)
Facility discharges to stream with 7Q10/30Q2 = 0 [Tidal -- zero fresh water inflow]. Removal of
discharge is recommended in three years or new limits (page 2) will apply at that time. Facility
must submit an engineering report within 12 months of the effective date of this permit showing no
alternative to surface water discharge.
The facility has had 1 TSS violation in the past year. The school was not required to perform
instream monitoring so its impact to the UT cannot be assessed.
Special Schedule Requirements and additional comments from Reviewers:
Recommended by: r 1046, ' C p�a.a � Date: a 7- 9,
Reviewed by
Instream
Regional
Permits 6
Date:
Date: l e
Date: 11 q
RETURN TO TECHNICAL SERVICES BY: DEC 13 1391

2
PARAMETERS
Existing_Limits:
Monthly Average
Summer
Winter WQ or EL
Wasteflow'i(MGD):
0.006
0.006
BOD5 (mg/1):
30
30
NH3N (m/1):
DO
TS S (mg/1)
30
30
Fecal Col. (1100 ml):
1000
1000
pH (Si): 1
6-9
6-9
Recommtnded
Limi •
For three years:
Monthly Average
After three years:
Monthly Average
Summer Winter WQ or EL
Summer
Winter
WQ or EL
Wasteflow
GD):
0.006 0.006
0.006
0.006
BOD5 (m
):
30 30
5.0
10.0
WQ
NH3N (m
):
1.0
1.8
WQ
DO (mg/l):
6.0
6.0
WQ
TSS (mg/l)
30 30
30.0
30.0
WQ
Fecal Col.
ml):
200 200
200.0
200.0
WQ
pH (SU):
ru
6.8-8.5 6.8-8.5
8.5
,•0
8.5 WQ
Residual Chlorine
(µg/1):
�
.0
WQ
13
t3
Limits h
Due T •
Parameter(,o Affected
Fecal coli, pH -salt water
w
New regulations/standards
New proce4ures
(zero flow policy) BOD5, NH3-N, DO
X P .arameter(s) are water quality limited. For some parameters, the available load capacity of
the immediate receiving water will be consumed. This may affect future water quality based
effluent ' 'tations for additional dischargers within this portion of the watershed.
OR
No parameters are water quality limited, but this discharge may affect future allocations.

r
3
INSTREAM MONITORING REQUIREMENTS
Upstream Location, at least 100 ft upstream
Downstream Location: at least 300 ft downstream
Parameters: DO, Fecal coliform, conductivity, temperature
Special ins"am monitoring locations or monitoring frequencies:
MISCELLANEOUS INFORMATION & SPECIAL CONDITIONS
Has the fac lity demonstrated the ability to meet the proposed new limits with existing treatment
facilities? Yes No
If n , which parameters cannot be met?
Woald a "phasing in" of the new limits be appropriate? Yes No
If yes, please provide a schedule (and basis for that schedule) with the regional
office recommendations:
If no, why not?
Wasteload sent to EPA? (Major) N (Y or N)
(If yes, then attach schematic, toxics spreadsheet, copy of model, or, if not modeled, then old
assumptions that were made, and description of how it fits into basinwide plan)
Additional Information attached? N (Y or N) If yes, explain with attachments.

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TO:
T,e
7 1991
P rmits and Engineering Unit
W1 Quality Section
Date October 31,1991
NPDES STAFF REPORT AND RECOMMENDATIONS
County Beaufort
Permit No. NC 0036919
PART I GENERAL INFORMATION
1. Facility and Address:Beaufort County Schools
P.O. Box 1628
Washington, N.C. 27889
2. Date of Investigation:
10 130-91
3. Rep rt Prepared by:
Pa rick Towell
4. Per ons Contacted and Telephone Number:
Mr. Clyde Roberson 919-946-8131
5. Directions to Site: Pantego Elementary School is
.2 iles from intersection of Hwy. 264 on SR. 1628
in eaufort county.
6. Discharge Point(s), List for all discharge points:
LatiItude: 35 35' 20" Longitude: 76401 00"
Att Bch a USGS map extract and indicate treatment
facility site and discharge point on map.
U.S. .S. Quad No.M-16-u U.S.G.S. Quad Name Pantego
7. Size (land available for expansion and upgrading):
No plans to expand. Additional land is available.
8. Topography (relationship to flood plain included):
Flat; elevation of aproximately 5 feet.
9. Location of nearest dwelling: Less than 400 feet
NPDES Pf#cmit Staff Report
Version /91
Page 1

10. Receiving stream or affected surface waters:
Pantego Creek
a. Classification: C sw NSW
b1 River Basin and Subbasin No.:Pamlico 03-03-07
c Describe receiving stream features and
pertinent downstream uses: Drainage
PART II - DESCRIPTION OF DISCHARGE AND TREATMENT WORKS
1. Type, of wasteater: 100 Domestic
% Industrial
a. Volume of Wastewater:0.006 MGD (Design Capacity)
b. Types and quantities of industrial wastewater:
NA
C. !Prevalent toxic constituents in wastewater:
NA
d. Pretreatment Program (POTWs only):
in development approved
should be required not neede
2. Production rates (industrial discharges only) in
pounds per day:
a. Highest month in the past 12 months:
b. Highest year in the past 5 years:
3. Des ription of industrial process (for industries
only) and applicable CFR Part and Subpart:
NA
4. Type' of treatment (specify whether proposed or
existinq):existing septic tank, dosing tank, sand filter,
sanuril chlorination, and chlorine contact chamber
5. Sludge handling and disposal scheme:
landfill
6. Treatment plant classification (attach completed
rating sheet): class I
SIC Code(s): 8211
7. Wastewater Code(s): Primary 03s Secondary 00
Main Treatment Unit Code: 44 00 00 0
NPDES Permit Staff Report
Version /91
Page 2

PART III - OTHER PERTINENT INFORMATION
1. Is this facility being constructed with Construction
Grant Funds (municipals only)? NA
2. Special monitoring requests: None
3. Additional effluent limits requests: None
4. Other: None
PART IV - EVALUATION AND RECOMMENDATIONS
It is recommended that this facility have its NPDES Permit
renewed for a period of five years.
CAL
preparer
NPDES Permit Staff Report Page 3

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