NC0037371_Wasteload Allocation_19940103

NPDES DOCU 4ENT :SCANNING COVER :SLEET
NPDES Permit:
NC0037371
North Iredell High School WWTP
Document Type:
Permit Issuance
;'
Wasteload Allocation"
Authorization to Construct (AtC)
Permit Modification
Complete File - Historical
Engineering Alternatives (EAA)
Instream Assessment (67b)
Speculative Limits
Environmental Assessment (EA)
Document Date:
January 3, 1994
This document is printed on reuse paper - ignore any
content on tine rezzerse side

100% DOMESTIC FACILITIES - RECD 11/93
RENEWING WITHOUT MODIFICATION
BY MODELER
Permit # Facility
Stream
FINAL LIST
Sub basin County Region ww MOD ENG Comments
JCD
01 /03/94
24741
27103
28614
29190
29238
30457
34827
34959
35092
37371
60691
61808
63720
76287
NCDOT/DAVIE CO I-40 REST AREA
PEMBROKE WWTP, TOWN OF
NCDOT/I-77 REST AREA
NCDOT/I-77 REST AREA
WEST IREDELL MIDDLE SCHOOL
CROSS CREEK APPAREL, INC.
OLD RICHMOND ELEMENTARY SCHOOL
WEST ROWAN HIGH SCHOOL
LEWISVILLE ELEMENTARY SCHOOL
NORTH IREDELL HIGH SCHOOL
CANDLE CORP OF AMERICA #002
NEIGHBORS FUEL CENTER
FOREST RIDGE SUBDIVISION
FARMER ELEMENTARY SCHOOL
UT SUGAR CREEK
LUMBER RIVER
ROCKY BRANCH
NAKED RUN
UT BACK CREEK
UT STONEY CREEK
UT FRIES CREEK
WITHROW CREEK
UT ELLISON CREEK
PATTERSON CREEK
YADKIN RIVER
LITTLE FISHER RIVER
BLANKET CREEK
UWHARRIE RIVER
KEYS TO COMMENTS:
Oa. No policy given. Alternatives analysis should be required.
Ob. Facility must meet 5 & 1 (by date given in parenthesis).
0c. Alternatives analysis requested.
0d. Alternatives analysis submitted
0e. Facility will connect to POTW.
1. Phased permit.
2. Documented instream water quality problems.
3. Facility is requesting modification.
4. WLA should be done per basinwide permitting schedule.
030705 DAVIE
030751 ROBESON
030706 YADKIN
030703 SURRY
030706 IREDELL
030703 SURRY
030702 FORSYTH
030706 ROWAN
030702 FORSYTH
030706 IREDELL
030702 SURRY
030702 SURRY
030702 FORSYTH
030709 RANDOLPH
WSRO
FRO
WSRO
WSRO
MRO
WSRO
WSRO
MRO
WSRO
MRO
WSRO
WSRO
WSRO
WSRO
JCD MW Oa
X JCD JL 4
JCD JL
JCD MW
JCD SW
JCD JL Ob (6/1/95)
JCD MW 0b (7/1/94)
JCD SR
JCD MW 0b (7/1/94)
JCD SR
JCD JL
X JCD MW Not built - treat as new.
JCD JL
JCD CA may require fecal limit upon renewal
NOTE: IF X UNDER "Request WLA COLUMN,
THE ENGINEER SHOULD REQUEST A WASTELOAD ALLOCATION.
ALSO, FOR A 'Oa' COMMENT, GIVE CURRENT ZERO -FLOW POLICY.
FOR A'Ob' COMMENT, GIVE 5 & 1 LIMITS BY DATE IN PARENTHESIS.

NPDES WASTE LOAD ALLOCATION
PERMIT NO.: NC0037371
PERMI 1"1'FE NAME:
FACILITY NAME:
Iredell County Board of Education
North Iredell High School
Facility Status: Existing
Permit Status: Renewal
Major Minor
Pipe No.: 001
Design Capacity: 0.0125 MGD
Domestic (% of Flow): 100 %
Industrial (% of Flow):
Comments:
RECEIVING STREAM: Patterson Creek
Class: C
Sub -Basin: 03-07-06
Reference USGS Quad: D15NE (please attach)
County: Iredell
Regional Office: Mooresville Regional Office
Previous Exp. Date: 5/31/92 Treatment Plant Class: 1
Classification changes within three miles:
No change within three miles.
Requested by:
Prepared by:
Reviewed by:
Mack Wiggins
Date: 12/12/91
(,{,�(,Q46,,-> Date: 7- 21
C � Date: 2 5a--
-80b,ti 135 u3Q1-61., EL
Modeler
Date Rec.
#
SA-0
k2\rtkt
6(4,5'2)
Drainage Area (m.2 ) (e. 3c, Avg. Streamflow (cfs):
7Q10 (cfs) 4. * Winter 7Q10 (cfs) '7.10 30Q2 (cfs) 9.13
Toxicity Limits: IWC % Acute/Chronic
Instream Monitoring:
Parameters
Upstream Location
Downstream Location
Effluent
Characteristics
Summer
Winter
BOD5 (mg/1)
30
30
NH3-N (mg/1)
D.O. (mg/1)
TSS (mg/1)
30
30
F. Col. (/100 ml)
zoo
Zoo
pH (SU)
6,-1
C, _9
r�l (A,
r
, AAV----
LQ-)04 .
---frry/6 A.
',la d C;
bo III Al e,(2,a,b0
- ci (71,164
Comments:
SLOTTED
2 02

0Z1174410R) '87
o. 075
\)(or,=o.015
qpuy- o. 3o
3992= O,o75.
p ous MopEC
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(Coo373
PAN U C
)CD
/
•
-k 741,000
'DA= 18.1
7g1o5= 4.0 (-Is
7471o0 = 1,o,.15
30?Z; 9.oc1S
qp,ry = v ,o,:1,
CurEz6v7 LLA i 75 :
p&
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Thy = 0(3o
E CAL coc 1 ' (aco/000
IEi
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3el z = cf.Octs
Qk �4 Z I v rfs
sk‘rreiesa1/4, 4w.
(Acrimft. InscNA4 t4nov0.)
ph = i s . 1 t- (0, Zro =
7005 g ( • 18,5 t; = 4,06
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• (s,5‘.1.13
SAW
02,0706,
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MODE
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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 WAS 1'ELOAD ALLOCATION
N. Iredell HS
NC003737 1
Domestic - 100%
Existing
Renewal
Patterson Creek
C
030706
Iredell
MRO 14A44
M. Wiggins
12/12/91
D15NE
Request # 6658
w. C. DEPT. OF NATURAL
RESOURCE! AND
COMMUNITY DEv;Lolb ver
FEB 1 01992
IINISIOA OF EAYIIINIt11MAI. IIAOAAf.JIE*T
MOORESVIUE ;E6IOMAL OffICE
Stream Characteristic:
USGS # est. from
0211746000
1987
18.36
4.06
7.10
18.26
9.13
0.47
Date:
Drainage Area (mi2):
Summer 7Q10 (cfs):
Winter 7Q10 (cfs):
Average Flow (cfs):
30Q2 (cfs):
IWC (%):
Wasteload Allocation Summary
(approach taken, correspondence with region, EPA, etc.)
N. Iredell High School is currently under an SOC for relaxed BOD5 and TSS limits.
The discharge is directly to Patterson Creek. Because of the high dilution ratio, no NH3-N/tox
choice will be required.
The facility was not required to perform instream monitoring in the past.
--Cc Gt: IA, will , Le.1(4 eviceI4/t f LA `i 7 / -
Special Schedule Requirements and additional comments from Reviewers:
de,„
Date: 1/zz/g2
Recommended by: , -, r
Reviewed by
Instream Assessment:
Regional Supervisor: / «
Permits & Engineering:
Date:
Date: apyi W
Date: Z/ (Sz
RETURN TO TECHNICAL SERVICES BY: MAR 0 5 1992

2
Existing Limits:
CONVENTIONAL PARAMETERS
Monthly Average
Summer Winter
Wasteflow (MGD): 0.0125 0.0125
BOD5 (mg/1): 30 30
NH3N (mg/1):
DO (mg/1):
TSS (mg/1): 30 30
Fecal Col. (/100 ml): 1000 1000
pH (SU): 6-9 6-9
Recommended Limits:
Monthly Average
Summer Winter WQ or EL
Wasteflow (MGD): 0.0125 0.0125
BOD5 (mg/1): 30 30
NH3N (mg/1):
DO (mg/1):
TSS (mg/1): 30 30
Fecal Col. (/100 ml): 200 200
pH (SU): 6-9 6-9
Chlor;nt a *V
Limits Changes Due To: Parameter(s) Affected
New regulations/standards/procedures Fecal coliform
Parameter(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 limitations for additional dischargers within this portion of the watershed.
OR
_X No parameters are water quality limited, but this discharge may affect future allocations.

3
INSTREAM MONITORING REQUIREMENTS
Upstream Location:
Downstream Location:
Parameters:
Special instream monitoring locations or monitoring frequencies:
MISCELLANEOUS INFORMATION & SPECIAL CONDITIONS
Adequacy of Existing Treatment
Has the facility demonstrated tjie ability to meet the proposed new limits with existing treatment
facilities? Yes No t/
If no, which parameters cannot be met? 1 T` 5 S
Would a "phasing in" of the new limits be appropriate? Yes No �/ - k�� e 5�
P g
If yes, please provide a schedule (and basis for that schedule) with the regional
office recommendations:
If no, why not?
SeLluvAra Alto'
Special Instructions or Conditions
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.