NC0067024_Wasteload Allocation_19920708

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NPDES WASTE LOAD ALLOCATION
PERMIT NO.: NCO067024
PERMITTEE NAME: Watauga County Board of Education
FACILITY NAME: Valle Crucis Elementary School
Facility Status: Existing
Permit Status: Renewal
Major Minor.
Pipe No.: 001
Design Capacity: 0.0065 MGD
Domestic (% of Flow):
Industrial (% of Flow):
Comments:
100 %
Refer : Basinwide / Streamline WLA File
Completed By Permits & Engineering
At Front Of Subbasin
RECEIVING STREAM: Dutch Creek
Class: B-Trout
Sub -Basin: 04-02-01
Reference USGS Quad: C11NE (please attach)
County: Watauga
Regional Office: Regional Office
Previous Exp. Date: 8/31/92 Treatment Plant Class: 1
Classification changes within three miles:
No change within three miles.
Requested by: Mack Wiggins Date: 5/6/92
Preparede:r.
Date: % % FL-
Reviewe GCiy�.� Date: `7 � -tot"
W 7
Modeler
Date Rec.
#
S LK a
5 z,
b
Drainage Area (mi ) 10. Avg. Streamflow (cfs):.2o,(�
7Q10 (cfs) on. � Winter 7Q10 (cfs) 3, �, 30Q2 (cfs) C. 2-
Toxicity Limits: IWC % Acute/Chronic
Instream Monitoring:
Parameters 1•erY1 2%h Q
Upstream ✓ Location ✓`J� a(�Q OU"`' l
Downstream 4_/ LocationL5D , LLIO�T Qt^*V
Effluent
Characteristics
Summer
Winter
BOD5 (mg/1)
NH3-N (mg/1)
,
D.O. (mg/1)
r, r
TSS (mg/1)
3L>
F. Col. V100 ml)
G
pH (SU)
G `f
LZ,,, �7-_
0, 5 "C—
2-o°C -
Comments:

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RECEIVED
N.C. Depi. of EWI
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
Valle Cruis Elementary School
NCO067024
Domestic - 100%
Existing
Renewal
Dutch Creek
B Trout
040201
Watauga
Winston-Salem
Wiggins
5/8/92
C11NE
Request # 6916
Stream Characteristic:
USGS #
Date:
Drainage Area (mi2):
Summer 7Q10 (cfs):
Winter 7Q10 (cfs):
Average Flow (cfs):
30Q2 (cfs):
IWC (%):
JUN1?IM
Winston-Salerr
Regional Offic(
10.6
2.6
3.8
20.6
6.2
Wasteload Allocation Summary
(approach taken, correspondence with region, EPA, etc.)
Facility requesting renewal of existing NPDES permit. Technical Support recommends renewal of
existing limits.
Special Schedule Requirements and additional comments from Reviewers:
Recommended
Reviewed by / /
Instream Assessment: (��l��e.,SdQ/�!.�PJ1 Date:
Regional Supervisor: �'-<- Date: '--
Permits & Engineering: Z—
�� U-�-- _ Date: 4Z'J- Z
Date:_6/9/92
RETURN TO TECHNICAL SERVICES BY: J U L 14 1992
�:�r�— d130—i3H3t3
03A130-3

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CONVENTIONAL PARAMETERS
Previous Existing Limits:
Monthly Average
Summer Winter
Wasteflow (1VIGD):
6.0065
BOD5 (mg/1):
30
NH3N (mg/1):
monitor
DO (mg/1):
nr
TSS (mg/1):
30
Fecal Col. V100 ml):
200
pH (SU):
6-9
Residual Chlorine (µg/1):
28
Temperature (C):
monitor
Recommended Limits:
Monthly Average
Summer
Winter WQ or EL
Wasteflow (MGD):
0.0065
BOD5 (mg/1):
30
WQ
NH3N (mg/1):
monitor
DO (mg/1):
nr
TSS (mg/1):
30
WQ
Fecal Col. (/100 ml):
200
WQ
pH (SU):
6-9
WQ
Residual Chlorine (µg/l):
28
WQ
Temperature-(C):
monitor
X7a(%r wecAm � Temr /Its
-#YZw d. 5°C d ut -H d sckay E i'n- iw C'0.41 AxM cd 9"C,
Limits Changes Due To:
Change in 7Q10 data
Change in stream classification
Relocation of discharge
Change in wasteflow
Other (onsite toxicity study, interaction, etc.)
Instream data
New regulations/standards/procedures
New facility information
Parameter(s) Affected
X 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
No parameters are water quality limited, but this discharge may affect future allocations.

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3
MISCELLANEOUS INFORMATION & SPECIAL CONDITIONS
Adequacy of Existing Treatment
Has the facility demonstrated the ability to meet the proposed new limits with existing treatment
facilities? Yes 4- No
If no, which parameters cannot be met?
Would 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?
Special Instructions or Conditions
Upstream monitoring: 100 ft. upstream of discharge
Downstream monitoring: 100 ft, downstream of discharge
Parameters: Temperature
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? (Y or N) If yes, explain with attachments.