NC0047091_WASTELOAD ALLOCATION_19860228

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WDES DOCYNENT SCANNING COVER SHEET
NPDES Permit: NC0047091
Silver Maples WWTP
Document Type: Permit Issuance
Wasteload Allocation
Authorization to Construct (AtC)
Permit Modification
Speculative Limits
Report g
■
Instream Assessment (67B)
Environmental Assessment (EA)
Permit Q
History
Document Date: February 28, 1986
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Engineer Date Rec.
NPDES WASTE LOAD ALLOCATION 11 Zs a ass,
Facility Name: ���/�� /// �S /��llr7�,!! ��f'7< � 5 Date
Existing
Proposed O' Permit No. : Z4/ jO 4170 9I� Pipe No. : County: ��jjl t-hi'c.S
Design Capacity (MGD) : O 0%0~ Industrial (% of Flow) : Ibmestic ( % of Flow) : /CeriO
w OS O7/ /Receiving Stream: 'I/ Class: _ Sub-Basin: �y�
Reference USGS Quad: laJ_ (Please attach) Requestor: MAIM, j i0o Regional Off ice/�Mh-er`_/1E
(Guideline limitations, if applicable, are to be listed on the back of this fora). )
Design Temp.: a5 Drainage Area (mi2) : Avg. Streamflow (cfs) : (0,3
7Q10 (cfs) ,q Winter 70-0 (cfs) ) 3.0 30Q2 (cfs)
Location of D.O. minimum (miles below outfall) : O Slope (fpm) 5.4
OO 0 zo'
Velocity (fps) : (7,1a Kl (base N, per day) : K2 (base e, oer day) : I,oQ
i-8Y
Effluent hbnthly Effluent onthly
Characteristics Average Comments Characteristics Lverage Comments
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Prepared By:�nn D,, / �xJ/r Reviewed By: Date: Jgl

Resuest No . 2755
--f-- ----- --- ----- WASTELOAU ALLOCATION APPROVAL FORM --- --- - ------ --------
Facility Name . SILVER MAPLE MHP
Type Of Waste DOMESTIC
Receiving Stream ROCKY RIVER
Stream Class : C
Subbasin : 030711
County CABERRUS
Regional Office : MOORESVILLE
Reauestor : WIGGINS
Drainage Area (so mi ) 86 .2
7010 (cfs ) : 6.9
Winter 7Q10 ( cfs ) 13
3002 Qfs )
- -... ---- ------ - RECOMMENDED EFFLUENT LIMITS --_-. --- --- - -- - ---- - --- - ----- --
6/(-J
Wasteflow ( mid) : . 04
5-Dag ROD ( mg/1 ) 30
PH ( SU ) : 6-9
TSS ( mg/1 ) : 30
- - - - ---...---- ... ---- ---- -- - - COMMENTS - --- - -- ------
-- ------------- ---------------- -- --------------• --_-_•---•------- -- - ------ -------•-- ---------------._..___._--..
FACILITY 16 : PROPOSED ( ) EXISTING ( /) NEW ( )
LIMITS ARE : REVISiION ( ) CONFIRMATION ( )II OF THOSE PREVIOUSLY ISSUED
RECOMMENDED BY : --�----_______ SAYS —
REVIEWED
BY : /
SUPERVISORY TECH . SUPPORT __�j�
REGIONAL SUPERVISOR `�77% `- "_._.DATE
PERMITS MANAGER : ._.-.�1 --.---.---DAT'E

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WkY: kr#: :A MODEL RESULTS
DISCHARGER ' SIVER MAPLES MHP
RECEIVING STREAM ! ROCKY RIVER
THE END D . O . IS 8 .09 MG/L
:Y:f•�Yd:k�:Yd��;K�;tits:*�***�K*�X�����k��::k�:��k*:#**�����*�%�%�;K��kcX��?k*A�:��at*��:K�:K�k�*�C%�:�:k
THE END CD'OD IS 1 .02 MG/L
THE END NBOD IS 0 . 00 MG/L.
THE D .O . MIN . OF SEGMENT 1 IS 7 . 49 MG/I_
THIS MINIMUM IS LOCATED AT SEGMENT MILEPOINT 0
WHICH IS LOCATED IN REACH NUMBER ].
THE WLA FOR SEGMENT 1 REACH 1 IS 129 MG/L OF CPOD
THE WLA FOR SEGMENT 1 REACH 1 IS 0 MG/L OF NBOD
THE REOU:I:RED EFFLUENT D . O . IS 0 MG/L_
THE WASTEFLOW ENTERING SEG 1 REACH 1 IS 0 . 04 MGD

MODEL 'SUMMARY DATA *
DISCHARGER SILVER MAPLE MHP SUBBASIN « 030711
FiECEIVING STREAM ROCKY RIVER STREAM CLASS ; C
7ulo 6 . 9 CFS WINTER 7010 « 13 CFS
DESIGN TEMPERATURE « 25 DEGREES C , WASTEFLOW « . 04 MGIr
ILENGTHISLOPE I VELOCITY IDEPTH I Kl I K1 I K2 I K2 I Kn I
( MILES IFT/MI I FPS I FT I /DAY 1 @20 I /DAY 1 @20 I /DAY I
I I I I I i I I I I
SEGMENT 1 I 7 . 301 5 . 901 0 . 172 1 1 . 74 1 0 . 46 1 0 . 37 1 2 . 031 1 . 821 0 &01
PEACH 1 I I I I I I I I I I
*XK INPUT DATA SUMMARY #*
I FLOW I CBOD I NBOD I D .O . I
I CFS I MG/L I MG/L i MG/L I
SEGMENT 1 REACH 1 I I I I
WASTE: 1 0 . 062 1129 . 000 1 0 . 000 1 0 . 000 1
HEADWATERSI 6 .900 1 2 . 000 1 0 . 000 1 7 . 560 I
TRIBUTARY 1 0 . 000 1 0 . 000 1 0 . 000 1 0. 000 1
RUNOFF * 1 0 . 230 1 2 . 000 1 0 .000 1 7 . 560 1
A RUNOFF FLOW IS IN CFS/MILE