NC0028711_Wasteload Allocation_19920514

NPDES DOCIMENT SCANNING COVER SHEET
NC0028711
Berryhill Elementary
WWTP
NPDES Permit:
Document Type:
Permit Issuance
.-V:steload
Allocation
Authorization to Construct (AtC)
Permit Modification
Complete File
- Historical
Correspondence
Speculative Limits
Instream Assessment (67b)
Environmental Assessment (EA)
Permit
History
Document Date:
May 14, 1992
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NPDES WASTE LOAD ALLOCATION
PERMIT NO.: NC0028711
PERMITTEE NAME: Charlotte -Mecklenburg Schools
FACILITY NAME: Berryhill Elementary School
Facility Status: Existing
Permit Status: Renewal
Major Minor
Pipe No.: 001
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
RECEIVING STREAM: Lake Wylie
Class: WS-III and B
Sub -Basin: 03-08-34
Reference USGS Quad: G15NW (please attach)
County: Mecklenburg
Regional Office: Mooresville Regional Office
Previous Exp. Date: 12/31/92 Treatment Plant Class: 1
Classification changes within three miles:
No change within three miles.
Requested by: Mack Wiggins
Prepared ater
Reviewed by: (.-
44,
wQL\ c-A-
Date: 10/17/91
Date: S,i, /g z-
Date: E /a-n
Modeler
Date Rec.
#
3-1A
lolztl9t
(0530
Drainage 1�rea (mi2 ) 7 Avg. Streamflow (cfs): '�• 3
7Q10 (cfs) D. b Winter 7Q10 (cfs) O. i 5 30Q2 (cfs) D. i S'
Toxicity Limits: IWC % Acute/Chronic
Instream Monitoring:
Parameters .1 . 1'C c c&
Upstream t CIO I u„� ,. Location
Downstream jnv( Ati@iLocation
Effluent
Characteristics
Summer
Winter
BOD5 (mg/1)
17
17
NH3-N (mg/1)
o
9
D.O. (mg/1)
O
o . 0
TSS (mg/1)
®
3 a
F. Col. (/100 ml)
2-t9 o
pH (SU)
c —?
(^ ?
ge-S L IJ
0444A (N 11)
IVOIk. sitv"
,....y.„..,4,---
i A
rr
Comments:

UNITED STATES
DEPARTMENT OF THE INTERIOR
GEOLOGICAL SURVEY
5oroomt
GASTONIA 15 MI.
3 MI. TO N.C. 273
57'30"

3 ,
cIL;t CA P
151
J

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
Berryhill Elementary School
NC0028711
Domestic - 100%
Existing
Renewal
Lake Wylie
WS-III and B
03-08-34
Mecklenberg
Mooresville Regional Office &r�
Mack Wiggins
10/21/91
G15NW
Request #
litchtlEIPT.
O5 F.SOi'RCES AND
COM!►tL'N 1TY DEVELOIPISOfrf
APR 1 1992
,�VOQRESYIoo or KLLE �c�
RI6WNAL UM.
Stream Characteristic:
USGS #
Date:
Drainage Area (mi2):
Summer 7Q10 (cfs):
Winter 7Q10 (cfs):
Average Flow (cfs):
30Q2 (cfs):
IWC (%):
1987 WLA
2.07
0.0
0.15
2.3
0.15
100
l_J
Wasteload Allocation Summary
(approach taken, correspondence with region, EPA, etc.)
Instream data shows no consistant instream DO problems.
Special Schedule Requirements and additional comments from Reviewers:
Recommended by: L ,,,f =c1�— Date: 3.2c -.9 Z
Reviewed by
Instream Assessment:
Regional Supervisor: /WC
Permits & Engineering: /
Date:
Date: 5
Date:. -
RETURN TO TECHNICAL SERVICES BY: APR 2 5 1992.

2
Fxisting Limits:
CONVENTIONAL PARAMETERS
Monthly Average
Summer Winter
Wasteflow (MGD): 0.006 0.006
BOD5 (mg/1): 17 17
NH3N (mg/1): 9 9
DO (mg/1): 5.0 5.0
TSS (mg/1): 30 30
Fecal Co1. (/100 ml): 200 200
pH (SU): 6.0-9.0 6.0-9.0
Residual Chlorine (µg/1): monitor monitor
Oil & Grease (mg/1):
TP (mg/1):
TN (mg/1):
Recommended Limits:
Monthly Average
Summer Winter WQ or EL
Wasteflow (MGD): 0.006 0.006
BOD5 (mg/1): 17 17
NH3N (mg/1): 9 9
DO (mg/1): 5.0 5.0
TSS (mg/1): 30 30
Fecal Co1. (/100 ml): 200 200
pH (SU): 6.0-9.0 6.0-9.0
Residual Chlorine (µg/1): monitor monitor
Oil & Grease (mg/1):
TP (mg/1):
TN (mg/1):
Limits Changes Due To: Parameter(s) Affected
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
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.
OR
No parameters are water quality limited, but this discharge may affect future allocations.

3
INSTREAM MONITORING REQUIREMENTS
Upstream Location: 100 feet upstream of discharge point
Downstream Location: 200 feet downstream of discharge point
Parameters: Temperature, DO, Fecal Coliform , CondOLk y,
Special instream monitoring locations or monitoring frequencies:
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 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
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.