NC0050075_Wasteload Allocation_19920921

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ar 'BEd. a>J 43 a of Su t38As NPDES WAS 1E LOAD ALLOCATION
PERMIT NO.: NC0050075
PERMI I'1'EE NAME:
FACILITY NAME:
Caldwell County Board of Education
Collettsville Elementary School
Facility Status: Existing
Permit Status: Renewal
Major Minor .\1
Pipe No.: 001
Design Capacity: 0.010 MGD
Domestic (% of Flow): 100 %
Industrial (% of Flow):
Comments:
RECEIVING STREAM: Johns River
Class: C
Sub -Basin: 03-08-31
Reference USGS Quad: D12NW
County: Caldwell
Regional Office: /k ville Regional Office
Previous Exp. Date: 2/28/93 Treatment Plant Class: 1
Classification changes within three miles:
No change within three miles.
Requested by:
Prepared by:
Reviewed by.
Mack Wiggins
2
(please attach)
Date: 6/17/92
( Date:
Date:
Modeler
Date Rec.
#
� >3
(4.Izz-lcz
(„aciz
Drainage Area (mi2 ) 6g Avg. Streamflow (cfs):
boa
7Q10 (cfs) ?0 Winter 7Q10 (cfs) ,e? 30Q2 (cfs) 1�
Toxicity Limits: IWC % Acute/Chronic
Instream Monitoring:
Parameters
Upstream Location
Downstream Location
Effluent
Characteristics
Summer
Winter
BOD5 (mg/1)
3 0
NH3-N (mg/1)
hAm, 44-✓
D.O. (mg/1)
n/
TSS (mg/1)
3 0
F. Col. (/100 ml)
n /
pH (SU)
y/
Comments: f
refer: Basinwide / Streamline WLA file
at front of subbasin
/35-

Facility Name:
NPDES No.:
Type of Waste:
Facility Status:
Permit Status:
Receiving Stream:
Stream Classification:
Subbasin:
County:
Regional Office:
Requestor:
Date of Request:
Togo Quad:
FACT SHEET FOR WAS1ELOAD ALLOCATION
Collettsville Elementary School
NC0050075
Domestic - 100%
Existing
Renewal
Johns River
C
030831
Caldwell
oresil
Wiggins
6/22/92
D12NW
Request # 6992
C. DEPT. OF NATURAL
RESOURCES AND
COMMUNITY DEVELOPMENT
AUG 1 7 1992
VISION OF ENVIRONMENTAL MANAGEMENT
MOORESVILLE REGIONAL OFFICE
Stream Characteristic:
USGS # 0214000000
Date: 8/16/90
Drainage Area (mi2): 68
Summer 7Q10 (cfs): 20
Winter 7Q10 (cfs): 29
Average Flow (cfs): 102
30Q2 (cfs): 44
IWC (%): 0.08
Wasteload Allocation Sununary
(approach taken, correspondence with region, EPA, etc.)
Facility requesting renewal of existing NPDES permit. Tech Support recommends renewal of
existing limits.
Special Schedule Requirenxnt� additional comments from Reviewers:
fj COn241 , 7`
Recommended by:
Reviewed by (/
Instream Assessment:
Regional S
701-44
Permits & E gineering:
Date:_8/4/92
RETURN TO TECHNICAL SERVICES BY: SEP 1 0 1992
RECEIVED
Water Quality Adios
AUG 1 9 1992
,,rsheville Regional ON.,
Asheville, North Carot►k:

2
Existing Limits:
Wasteflow (MGD):
BOD5 (mg/1):
NH3N (mg/1):
DO (mg/1):
TSS (mg/1):
Fecal Co1. (/100 m1):
pH (SU):
Residual Chlorine (14/1):
Oil & Grease (mg/1):
TP (mg/1):
TN (mg/1):
Recommended Limits:
Wasteflow (MGD):
BOD5 (mg/1):
NH3N (mg/1):
DO (mg/1):
TSS (mg/1):
Fecal Co1. (/100 ml):
pH (SU):
Residual Chlorine (14/1):
Oil & Grease (mg/1):
TP (mg/1):
TN (mg/1):
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
CONVENTIONAL PARAMETERS
Monthly Average
Summer Winter
0.010
30
monitor
nr
30
nr
nr
Monthly Average
Summer Winter
0.010
30
monitor
nr
30
nr
nr
WQorEL
WQ
WQ
Parameter() Affected
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
No parameters are water quality limited, but this discharge may affect future allocations.

3
MISCELLANEOUS INFORMATION & SPECIAL CONDITIONS
Adequacy of Existing Treatment
Has the facility deli i onstrated the ability to meet the proposed new limits with existing treatment
facilities? Yes A No
If no, hich 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
Wasteload sent to EPA? (Major) _ _ (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.

i
1/5"/572-
6111-e /L02-04-7:Z-
/'vor TSS w .
gy.,
a&h.
/fr<fak .44,,74-- txr_
�-1

collettsville elementary school
AMMONIA
7Q10: 20.0000
NH3 Effl. Conc: 18.3500
AL (1/1.8 mg/1) : 1000.00
Upstream NH3 Conc.: 220.0000
Design Flow: 0.0100
Predicted NH3 Downstream: 234.04
0.234039
NH3 Limit: 1007451.
1007.451
AMMONIA
7Q10: 29.0000
NH3 Effl. Conc: 18.3500
AL (1/1.8 mg/1) : 1800.00
Upstream NH3 Conc.: 220.0000
Design Flow: 0.0100
Predicted NH3 Downstream: 229.68
0.229684
NH3 Limit: 2957929.
2957.929
ANALYSIS
cfs
mg/1
ug/1
ug/1
MGD
ug/1
mg/1
ug/1
mg/1
ANALYSIS (WINTER)
cfs
mg/1
ug/1
ug/1
MGD
ug/1
mg/1
ug/1
mg/1

collettsville elem. school
CHLORINE ANALYSIS
7Q10: 20.0000 cfs
CL2 Effl. Conc: 0.0000 mg/1
AL (17/19 ug/1) : 17.0000 ug/1
Upstream CL2 Conc.: 0.0000 ug/1
Design Flow: 0.0100 MGD
Predicted CL2 Downstream: 0.00 ug/1
0 mg/1
CL2 Limit: 21952.48 ug/1
21.95248 mg/1