NC0023981_Instream Assessment_19841203

NPDES DOCYHENT SCANNING: COVER SHEET
NC0023981
Lenoir — Lower Creek WWTP
NPDES Permit:
Document Type:
Permit Issuance
Wasteload Allocation
Authorization to Construct (AtC)
Permit Modification
Complete File - Historical
Engineering Alternatives (EAA)
Correspondence
Owner Name Change
201 Facilities Plan
Instream Assessment (67b f
Speculative Limits
Environmental Assessment (EA)
Document Date:
December 3, 1984
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DIVISION OF ENVIRONMENTAL MANAGEMENT
December 3, 1984
MEMORANDUM TO: Trevor Clements
FROM:
SUBJECT:
Thurman Horn141
Request for -Predictive Impact Analysis
City of Lenoir
Lower Creek Wastewater Treatment Plant
NPDES Permit No. NC 0023981
Caldwell County
As per our telephone conversation, attached is a copy of the past year's
monthly self -monitoring data for the subject facility. Lenoir has requested
a 67(b) SOC to allow the connection of 145,000 gpd of domestic strength
wastewater.
Please conduct a predictive impact analysis and inform me of the results.
If you need any additional information, please advise.
Attachment
cc: L. P. Benton, Jr.
JTH:se

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40-1,9" S © Q
********** MODEL RESULTS **********
DISCHARGER :LENOIR SOC
RECEIVING STREAM :LOWER CREEK
***********************************************:**********************
THE END D.O. IS 7.41 MG/L
**********************************************************************
THE END CDOI' IS 7.37 MG/L
**********************************************************************
THE END NBOD IS 0.00 MG/L
**********************************************************************
THE D.O. MIN. OF SEGMENT 1 IS 7.04 MG/L
THIS MINIMUM IS LOCATED AT SEGMENT MILEPOINT 2.1
WHICH IS LOCATED IN REACH NUMBER 1
THE WLA FOR SEGMENT 1 REACH 1 IS 57 MG/L OF CDOD
THE WLA FOR SEGMENT 1 REACH 1 IS 0 MG/L OF NDOD
THE REQUIRED EFFLUENT D.O. IS 7 MG/L
THE WASTEFLOW ENTERING SEG 1 REACH 1 IS 2.565 MOD
**********************************************************************
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*********k MODEL RESULTS **********
DISCHARGER :LENOIR LQWER CREEK SOC
RECEIVING STREAM :LOWER CREEK
**********************************************************************
THE END D.O. IS 7.44 MG/L
*************************************************:**********:*********
THE END CBOD IS 7.13 MG/L
**********************************************************************
THE END NROD IS 0.00 MG/L
*******************************************************'*:*:***:****
THE D.Q. MIN. OF SEGMENT 1 IS 7.07 MG/L
THIS MINIMUM IS LOCATED AT SEGMENT MILEPOINT 2
WHICH IS LOCATED IN REACH NUMBER 1
THE WLA FOR SEGMENT 1 REACH 1 IS 57 MG/L OF CBOD
THE WLA FOR SEGMENT 1 REACH 1 IS 0 MG/L OF NBOD
THE REQUIRED EFFLUENT D.O. IS 7 MG/L
THE WASTEFLOW ENTERING SEG 1 REACH 1 IS 2.44 MGD
************************************************* *********************

h.- *** MODEL SUMMARY DATA ***
DISCHARGER
RECEIVING STREAM
7010
DESIGN TEMPERATURE :
LENOIR SOC
LOWER CREEK
11 CFS
24 DEGREES C,
SUBBAStN : 030831
STREAM CLASS: C
WINTER 7010 : CFS
WASTEFLOW : 2.44 Mori
I LENGTH I SI..OPE 1 VELOCITY I DEPTH I K 1 1 K 1 1 K2 1 K2 1 Kn 1
(MILES IFT/MI 1 FPS 1 FT 1 /DAY 1 t20 1/DAY I P20 1/DAY I
SEGMENT 1
REACH 1
I I 1
1 6.301 6.301
1 1 1
1 I I 1 I 1 I
0.418 1 1.75 1 0,47 1 0.39 1 3.731 3.421 0.001
1 1 1 1 I 1 1
*** INPUT DATA SUMMARY ***
1 FLOW 1 CBOD 1 NBQD I D.O. I
1 CFS 1 MG/L 1 MG/L 1 MC/L. I
SEGMENT
1 1 1
1 REACH 1 I 1 I
WASTE I 3.782 1 57.000 I
HEADWATERSI 11.000 I 2.000 1
TRIBUTARY 1 0.000 1 0.000 1
RUNOFF * 1 1.400 1 2.000 I
1 1
1
0.000 1 7.000 I
0.000 1 7.650 I
0.000 1 0.000 1
0.000 I 7.650 1
* RUNOFF FLOW IS IN CFS/MILE