NC0021423_WASTELOAD ALLOCATION_19951130

NPDES DOCUWEMT SCANNINS COVER SHEET
NPDES Permit: NC0021423
Spruce Pine WWTP
Document Type: Permit Issuance
Wasteload Allocation
Authorization to Construct (AtC)
Permit Modification
Engineering Alternatives Analysis
201 Facilities Plan
Instream Assessment (67B)
Correspondence re: Mercury method
Permit History . Date Range:
Document Date: November 30, 1995
This document is printed on reuse paper-igaoz-e any
content on tlXe reverse side

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SPRUCE PRE WWTP 1tI24 /,tz� ° /•6 �GO
AYE Ira
C/L '5 hVL.Q— LgD�A
�1GD
-497
2 C ��JLrNN3 /M;�ra � �
6�flo>rfl'/W /,n1 / 5cc.. > l,NG,D
'ID /3sns= ?o.
Residual Chlorine Ammonia as NH3
(summer)
7010(CFS) 43.5 7010(CFS) 43.5
DESIGN FLOW(MGD) 1.2 DESIGN FLOW(MGD) 1.2
DESIGN FLOW(CFS) 1.86 DESIGN FLOW(CFS) 1.86
STREAM STD(UG/L) 17.0 STREAM STD(MG/L) 1.0
UPS BACKGROUND LEVEL(UG/L) 0 UPS BACKGROUND LEVEL(MG/L) 0.22
IWC(%) 4.10 IWC(%) 4.10
Allowable Concentration(ugll) 414.58 Allowable Concentration (mg/1) 19.24
Ammonia as NH3
(winter)
7010(CFS) 56
Fecal Limit 200/100ml DESIGN FLOW(MGD) 1.2
Ratio of 23.4:1 DESIGN FLOW(CFS) 1.86
STREAM STD(MG/L) 1.8
UPS BACKGROUND LEVEL(MG/L) 0.22
IWC(%) 3.21
Allowable Concentration(mg/1) 49.37
NCO021423 1 1/3 0/9 5

SUMM��
/IL c. @ / 2 ofrrvJ NH „�
41 oN U3anT13� 'tl�in�Fiz
---------- MODEL RESULTS ----------
Discharger : SPRUCE PINE
Receiving Stream : NORTH TOE RIVER
----------------------------------------------------------------------
The End D .O. is 7 . 60 mg/l .
The End CBOD is 4 . 23 mg/l .
The End NBOD is 4 . 27 mg/l .
----------------------------------------------------------------------
WLA WLA WLA
DO Min CBOD NBOD DO Waste Flow
(mg/1 ) Milepoint Reach # (mg/1 ) (mg/1 ) (mg/1 ) (mgd)
------ --------- ------- ---- ---- -- ----------
Segment 1 7 .40 0 . 00 1
Reach 1 60 . 00 85 . 50 0 . 00 1 . 20000

MODEL SUMMARY DATA
Discharger : SPRUCE PINE Subbasin 040306
Receiving Stream : NORTH TOE RIVER Stream Class : C-TROUT
Summer 7Q10 : 43 . 5 Winter 7Q10 : 56 . 0
Design Temperature : 23 . 0
ILEt16THI SLOPEI VELOCITY I DEPTHI Kd I Kd I Ka I Ka I KN I KN I KNR I KNR I SOD I SOD I
I mile I ft/mi) fps I ft Idesignl 920' Idesignl @20' Idesignl @20' Idesignl @201 Idesignl @201 1
------------------------------------------------------------------------------------------------------------------
I I I I I I I I I I I I I I I
Segment 1 1 1.101 8.001 0.561 1 2.32 1 0.29 1 0.25 1 4.22 1 3.951 0.38 1 0.30 1 0.38 1 0.00 1 0.00 1 0.00 1
Reach I I I I I I I I I I I I I I
----------------------------------------------------------------------------------------------------
I Flow I CBOD I NBOD I D .O. 1
I cfs I mg/l I mg/l I mg/l 1
Segment t Reach 1
Waste 1 1 . 860 1 60 . 000 1 85 . 500 I 0 . 000
Headwaters ) 43 . 500 1 2 . 000 1 1 . 000 1 7 . 720
Tributary 1 0 . 000 1 2 . 000 1 1 . 000 I 7 . 720
* Runoff 1 0 . 000 1 2 . 000 I 1 . 000 1 7 . 720
* Runoff flow is in cfs/mile

SUMMLH
Seg # I Reach # I Seg Mi I D . G. I CBOD I NBOD I Flow
1 1 0 . 00 7 . 40 4 . 38 4 . 46 45 . 36
1 1 0 . 10 7 . 43 4 . 36 4 .45 45 . 36
1 1 0 . 20 7 . 45 4 . 35 4 .43 45 . 36
1 1 0 . 30 7 . 47 4 . 34 4 .41 45 . 36
1 1 0 .40 7 . 48 4 . 32 4 . 39 45 . 36
1 1 0 . 50 7 . 50 4 . 31 4 . 37 45 . 36
1 1 0 . 60 7 . 52 4 . 30 4 . 36 45 . 36
1 1 0 . 70 7 . 54 4 . 28 4 . 34 45 . 36
1 1 0 . 80 7 . 55 4 . 27 4 . 32 45 . 36
1 1 0 . 90 7 . 57 4 . 26 4 . 30 45 . 36
1 1 1 . 00 7 . 59 4 . 24 4 . 28 45 . 36
1 1 1 . 10 7 . 60 4 . 23 4 . 27 45 . 36
Seg # I Reach # I Seg Mi I D .O . I CBOD I NBOD I Flow I

SPRUCE PINE W WiP
ems= �a
NA3 = //7 (*w)
Residual Chlorine Ammonia as NH3
(summer)
7010(CFS) 43.5 7010(CFS) 43.5
DESIGN FLOW(MGD) 1.6 DESIGN FLOW(MGD) 1.6
DESIGN FLOW(CFS) 2.48 DESIGN FLOW(CFS) 2.48
STREAM STD(UG/L) 17.0 STREAM STD(MG/L) 1.0
UPS BACKGROUND LEVEL(UG/L) 0 UPS BACKGROUND LEVEL(MG/L) 0.22
IWC (%) 5.39 IWC(%) 5.39
Allowable Concentration(ug/1) 315.19 Allowable Concentration(mgll) 14.68
Ammonia as NH3
(winter)
7010(CFS) 56
Fecal Limit 200/100m1 DESIGN FLOW(MGD) 1.6
Ratio of 17.5:1 DESIGN FLOW(CFS) 2.48
STREAM STD(MG/L) 1.8
UPS BACKGROUND LEVEL(MG/L) 0.22
IWC(%) 4.24
Allowable Concentration(mgA) 37.48
NC0021423 11/30/95

SUMMER
z13P4rA zr SPEC LIMIT @ 1 . 6 MGD , NH3 TOX
"SP2P/n1/G LIMIT = 14 . 7
---------- MODEL RESULTS ----------
Discharger : SPRUCE PINE
Receiving Stream : NORTH TOE RIVER
----------------------------------------------------------------------
The End D . O. is 7 . 52 mg/l .
The End CBOD is 4 . 96 mg/l .
The End NBOD is 4 . 31 mg/l .
---------------------------------------------------------------------
WLA WLA WLA
DO Min CBOD NBOD DO Waste Flow
(mg/1 ) Milepoint Reach # (mg/1 ) (mg/1 ) (mg/1 ) (mgd)
------ --------- ------- ---- ---- -- ----------
Segment 1 7 . 30 0 . 00 1
Reach 1 60 . 00 66 . 00 0 . 00 1 . 60000

mmm MODEL SUMMAHY UAIA mmm
Discharger• : SPRUCE PINE Subbasin 040306
Receiving Stream : NORTH TOE RIVER Stream Class : C—TROUT
Summer 7Q10 : 43 . 5 Winter 7Q10 : 56 . 0
Design Temperature : 23 . 0
ILENGTHI SIOPEI VELOCITY I DEPTHI Kd I Kd I Ka I Ka I KN I KH I KNR I KHR I SOD I SOD I
I mile I ft/mil fps I ft Idesignl @20' Idesignl @20' Idesignl @20' Idesignl @201 Idesignl @20° 1
-------------------------------------------------------------------------------------------------------------------
I I I I I I I I I I I I I I I
Segment 1 1 1.101 8.001 0.567 1 2.33 1 0.29 1 0.25 1 4.26 1 3.991 0.38 1 0.30 1 0.38 1 0.00 1 0.00 1 0.00 1
Reach 1 I I I I I I I I I I I I I
---------------------------------------- ------------------------------------------------------------
I Flow CBOD I NBOD I D . O. I
I cfs I mg/l I mg/l I mg/l I
Segment 1 Reach 1
Waste 1 2 .460 1 60 . 000 1 66 . 000 1 0 . 000
Headwatersl 43 . 500 1 2 . 000 1 1 . 000 1 7 . 720
Tributary 1 0 . 000 1 2 . 000 1 1 . 000 1 7 . 720
* Runoff 1 0 . 000 1 2 . 000 1 1 . 000 1 7 . 720
* Runoff flow is in cfs/mile

SUMMER
SPEC LIMIT @ 1 . 6 MGD , NH3 TGX
LIMIT = 14 . 7
Seq # Reach # Seq Mi D .O. CBOD NBOD Flow
1 1 0 . 00 7 . 30 5 . 13 4 . 51 45 . 98
1 1 0 . 10 7 . 33 5 . 11 4 . 49 45 . 98
1 1 0 . 20 7 . 35 5 . 10 4 . 47 45 . 98
1 1 0 . 30 7 . 37 5 . 08 4 . 45 45 . 98
1 1 0 . 40 7 . 39 5 . 07 4 . 43 45 . 98
1 1 0 . 50 7 . 41 5 . 05 4 .42 45 . 98
1 1 0 . 60 7 . 43 5 . 03 4 . 40 45 . 98
1 1 0 . 70 7 . 45 5 . 02 4 . 38 45 . 98
1 1 0 . 80 7 .47 5 . 00 4 . 36 45 . 98
1 1 0 . 90 7 . 49 4 . 99 4 . 34 45 . 98
1 1 1 . 00 7 . 51 4 . 97 4 . 33 45 . 98
1 1 1 . 10 7 . 52 4 . 96 4 . 31 45 . 98
Seg # Reach # Seq Mi D . O . CBOD NBOD Flow