NC0023973_Wasteload Allocation_19840905

NPDES
WASTE LOAD ALLOCATION
En�ineer Date Rec.
Facility. Name
O
Sou / �,(�
+ Date
Existing 0
Proposed O
Permit No.: _
Ae � f Q
Q 3 Pipe No.:
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Design Capacity (MGD):
(aC.
Industrial (.% of Flow):
DDmestic (% of Flow): %C G
Receiving Stream:
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Class: _S(- - Saj
Sub -Basin.
Reference USGS Quad: _
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(Please
attach) Requestor:
Regional Offict
(Gai.de11ne limitations, if applicable, are to be listed on the back of this form.)
Design p�m.= O AA
l.� Drainage Area (mi2)= Avg. Streamflow (cfs):
7Q10 (cfs) � J Winter 7Q10 (cfs) 30Q2 (cfs)
Location of D.O. minimum (miles below outfall): Slope (fpm)
Velocity (fps): 1, d 5 K1 (base e, per day): K2 (base e. oer day):
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Effluent
Characteristics
.
Average
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Effluent
Characteristics
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(bmments
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Original Allocation O Comments:
Revised Allocation ( G.
Confirmation O
Prepared By: ,(� _J s� '11e."? _ — eviewed By: �p� Date:

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-
- REQUEST NO. 816
********************* WASTELOAD ALLOCATION APPROVAL FORM
FACILITY NAME
TYPE OF WASTE
COUNTY
REGIONAL OFFICE
RECEIVING STREAM
7010 1 450 CFS
DRAINAGE AREA
� WILMINGTON SOUTHSIDE WWTP
� DOMESTIC
� NEW HANOVER
� WILMIN8TON
� CAPE FEAR RIVER
W7Q1O :
� SQ.MI^
REQUE8TOR :
SUBBASJN :
CFS 3OQ2 �
STREAM CLASS
HELEN FOWLER
030617
CFS
************************ RECOMMENDED EFFLUENT LIMITS ************************
WASTEFLOW(S) (MBD) 12
��
BOD-5 (MG/L) � 30 ^�°- r�'��°r`~~~-`'°
NH3-N (MG/L) �
D^O^ (MG/L) � �� K��� �� U �� K� ��
PH (SU) � "" �~�� K� � Vv �� ��
FECAL COLIFORM (/100ML): 1000
T77! (MG/L) 30 1���
- '^v~,
\r8TER QUAIATYSECT/ON
FACILITY IS ! PROPOSED ( EXISTING (m^) NEW ( )
LIMITS ARE 1 REVISION ( w^) CONFIRMATION ( ) OF THOSE PREVIOUSLY ISSUED
K4«c _ tuoNw-AZE I . °
REVIEWED AND RECOMMENDED BY: t
MODELER
SUPERVIGOR,MODELING GROUP
��
�~�EGIONAL SUPERVISOR
PERMITS MANAGER
~- _
TE
�-
� ---DATE
�- --
__DATE
°
----DATE
AUG 22��
MI-MI0GTON REGIONAL OFFICE'
���
uv��vo

Attachment
The limits indicated on the Approval Form reflect an assumption
of low background dissolved oxygen (D.O.) deficits. Ambient monitoring
data indicates that this is not always representative of summer conditions.
It is not presently known whether these poor background conditions can
be attributed to upstream discharges or the influence of salinity. The
Modeling Group recommends, therefore, that a re -opener clause be inserted
in the NPDES permit. If downstream monitoring indicates that Wilmington's
discharge is the cause of further water quality degradation, then more
stringent limits will need to be applied. The Modeling Group recommends
that the downstream monitoring station be located 1.5 miles downstream
of the outfall for this purpose.
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