NC0046728_Wasteload Allocation_19870311

NPDES DOCUMENT SCANNING: COVER SHEET
NC0046728
Mooresville / Rocky River WWTP
NPDES Permit:
Document Type:
Permit Issuance
(.
Wasteload Allocation
Authorization to Construct (AtC)
Permit Modification
Complete File - Historical
Engineering Alternatives (EAA)
Correspondence
Instream Assessment (67b)
Speculative Limits
Environmental Assessment (EA)
Permit
History
Document Date:
March 11, 1987
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NPDES WASTE LOAD AIIOCAT{ON
Facility Name: Tow0-P PipsRF'SOu-E
Existing
Proposed
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Permit No.: kicov tf4 7tr
Design Capacity (MGD): S.L
Receiving Stream:
Engineer
Da e ec.
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2409
Pipe No.: Ob / County: Tiee_,AgtL
(1-ciefor Ciiea., Cob !o):J
Industrial (% of Flow) : 37 Domestic (% of Flow) : 4,3
Class:
Sub -Basin: 0 3 -co- !t
Reference USGS Quad: 1: i SE (Please attach) Requestor:: 4(t d /ercos( Regional Office MA°
/'LooA.&SVt'-[
(Guideline limitations, if applicable, are to be listed on the back of this form.)
Design Temp.: Drainage Area (mi2): Avg. Streamflow (cfs):
70_0 (cfs) Winter 7Q10 (cfs) 30Q2 (cfs)
Location of D.O. minimum (miles below outfall): Slope (fpm)
Velocity (fps) :
K1 (base e, per day):
K2 (base e. per day):
Effluent
Characteristics
Monthly
Average
Comments
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Comments:
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Request No. :2609
--------------------- WASTELOAD ALLOCATION APPROVAL FORM
Facility Name : TOWN OF MOORESVILLE
Type of Waste : INDUSTRIAL & DOMESTIC
Status : EXISTING
Receiving Stream : DYE BRANCH
Stream Class : C
Subbasin : 030711
County : IREDELL Drainage Area (sq mi) :
Regional Office : MOORE8VILLE Summer 7Q10 (cfs) :
Requestor : D. OVERCASH Winter 7Q10 (cfs) :
Date of Request : 9-10-85 Average Flow (cfs) :
Quad : 3002 (cfs) :
RECOMMENDED EFFLUENT LIMITS
:
Wasteflow (mgd): 5.2
5-Day BOD (mg/1): 24
Ammonia Nitrogen (mg/1): 13
Dissolved Oxygen (mg/1): 5
TES (mg/1): 30
Fecal Coliform (#/100ml): 1000
pH (SU): 6-9
:
:
MONITORING
Upstream (Y/N): Y Locationt 100 FT ABOVE OUTFALL
Downstream (Y/N): Y Location: SR 1142
COMMENTS
THESE ARE EXISTING LIMITS AND ARE FOR A 2 YEAR RENEWAL.
TOXICITY TESTING REQUIREMENT ATTACHED.
RECOMMEND FACILITY MONITOR FOR ZINC. .^
Recommended by ... Date
Reviewed by:
Tech. Support Supervisor
Regional Supervisor �K
Permits & Engineerin
Water Quality Section Chief ___
op -
Date _
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Date w� / �/
Date

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. TOXICITY TESTING REQUIREMENT
of Moores vibe, iuc.004-4702$ eP a cei
The effluent discharge shall at no time exhibit chronic toxicity using
test procedures outlined in:
1.) The North Carolina Ceriodaphnia chronic effluent bioassay proce-
dure (North Carolina Chronic Bioassay Procedure - Revised *February 1987) or
subsequent versions.
The effluent concentration at which there may be no observable inhibi-
tion of reproduction or significant mortality is /7 % (defined as treatment
two in the North Carolina procedure document). The permit holder shall
perform p monitoring using this procedure to establish compliance
with the permit ondition. The first test will be performed within thirty
days from issua a of this permit. Effluent sampling for this testing shall
be performed at the NPDES permitted final effluent discharge below all
treatment processes, including chlorination. There may be no dechlorination
of the effluent sample prior to testing.
All toxicity testing results required as part of this permit condition
will be entered on the Effluent Discharge Monitoring Form (MR-1) for the
month in which it was performed, using the appropriate parameter code.
Additionally, DEM Form AT-1 (original) is to be sent to the following
address:
Attention: Technical Services Branch
North Carolina Division of
Environmental Management
P.O. Box 27687
Raleigh, N.C. 27611
Test data shall be complete and accurate and include all supporting chemi-
cal/physical measurements performed in association with the toxicity tests,
as well as all dose/response data. Total residual chlorine must be measured
and reported if employed for disinfection of the waste stream.
Should any test data from this monitoring requirement or tests per-
formed by the North Carolina Division of Environmental Management indicate
potential impacts to the receiving stream, this permit may be re -opened and
modified to include alternate monitoring requirements or limits.
NOTE: Failure to achieve test conditions as specified in the cited docu-
ment, such as minimum control organism survival and appropriate environmen-
tal controls, shall constitute an invalid test and will require immediate
retesting. Failure to submit suitable test results will constitute a fail-
ure of permit condition.
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