NC0047091_Wasteload Allocation_19901018

NPDES DOCUWENT SCANNING COVER SHEET
NPDES Permit: NC0047091
Silver Maples WWTP
Document Type: Permit Issuance
Wasteload Allocation
i
Authorization to Construct (AtC)
Permit Modification
Speculative Limits
Report
Instream Assessment (67B)
Environmental Assessment (EA)
Permit
History
Document Date: October 18, 1990
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NPDES WASTE LOAD ALLOCATION
PERMIT NO.: NC0047091
PERMITTEE NAME: Mr. Logan A. Boggs / Silver Maple Mobile
Facility Status: Existing
Permit Status: Renewal
Major Minor
Pipe No.: 001
Design Capacity: 0.040 MGD
Domestic (% of Flow): 100 %
Industrial (% of Flow):
Comments: 43/4
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RECEIVING STREAM: Rocky River
Class: C
Sub -Basin: 03-07-11
Reference USGS Quad: F16SW (please attach)
County: Cabarrus
Regional Office: Mooresville Regional Office
Previous Exp. Date: 4/30/91 Treatment Plant Class: 1
Classification changes within three miles:
No chanize within three miles.
Requested by: Mack Winins Date: 917/90
Prepared by: Date:io/oAo
Reviewed by: �Z Date: !� ! 7
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Modeler Date Rec. #
ems 90 5_0 7
Drainage Area (mil ) gt,• 7 Avg. Streamflow (cfs):
7Q10 (cfs) G.9 Winter 7Q10 (cfs) 1113 30Q2 (cfs)
Toxicity Limits: IWC % Acute/Chronic
Instream Monitoring:
Parameters�l, CoL-i Fo4M
Upstream Location •r oo'
Downstream Location ar LCA5r 30'
Effluent
Characteristics
Summer
Winter
BOD5 (MO)
30
30
NH3-N (mgA)
D.O. (mg/1)
TSS (mg/1)�
F. Col. (/100 ml)
PH (SU)
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Request No.: 5847
------------------- WASTELOAD ALLOCATION APPROVAL FORM -------------------
Facility Name: Silver Maple Mobile Estates
NPDES No.: NCO047091
Type of Waste: 100% Domestic
Status: Existing/Renewal
Receiving Stream: Rocky River
Classification: C 1986
Subbasin: 030711 Drainage area: 86.200 sq mi
County: Cabarrus Summer 7Q10: 6.90 cfs
Regional Office: Mooresville /'rG Winter 7Q10: 13.00 cfs
Requestor: M. Wiggins Average flow: 103.00 cfs
Date of Request: 9/7/90 30Q2: cfs
Quad: F16SW
-------------------- RECOMMENDED EFFLUENT LIMITS -------------------------
EXISTING PROPOSED R• C. DEPT. OF N.hT"RAL
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COMN1UPi' ..- €?, �ZENT
Wastef low (mgd): 0.04 0.04
BOD5 (mg/1) : 30 0 c;-o
NH3N (mg/1) : 1990
DO (mg/ 1)
TSS (mg/1) : 30 30 q_ I
Fecal coliform (#/100ml) : dNOQUILd REGIONAL OFFICE
pH (su) : 6-9 6-9 OCT (j ;j i990
Toxicity Testing Req.: P« c T'
MONITORING
-- ----------------- J -------------
Upstream (Y/N): N Location:
Downstream (Y/N): N Location:
----------------------------- COMMENTS -----------------------------------
Facility has a dilution ratio of 112. Recommend renewal of existing limits,
However, an intensive study is being performed on the Rocky River and
based on updated model, the permit may be reopened to include more
stringent limits.
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--------------------------------------------------------------------------
Recommended by: ^j6� Date: q i4/qQ
Reviewed by
Tech Support Supervisor: OOqA Date: qlaLj 161
Regional Supervisor: i Date: l/
Permits & Engineering: Date: �a
RETURN TO TECHNICAL SUPPORT BY: OCT 2 3 1990