NC0057193_Wasteload Allocation_19960919

NPDES WASTE LOAD ALLOCATION
PERMIT NO.: NCO057193
PERMITTEE NAME: Nantahala Outdoor Center
FACILITY NAME:
Facility Status: Existing
Permit Status: Modification
Major
Miner
Pipe No.: 001
Design Capacity: 0.02 MGD
Domestic (% of Flow):
Industrial (% of Flow):
11 '.
Comments:
Requesting a flow increase from0.02 MGD to 0.04 MGD
Pv11 Veaes qm- 19`10 Amo 1191
RECEIVING STREAM: the Nantahala River
Class: B-Trout
Sub -Basin:
Reference USGS Quad: F4SE 2-57-(22.5)� (please attach)
County: Swain \v
Regional Office: Asheville Regional Office
Previous Exp. Date: 00/00/00 Treatment Plant Class:
Classification changes within three miles:
Requested 1
Prepared by
Reviewed b
�o
W�
Modeler
Date Rec.
#
�-
$ 5,0 8
Drainage Area (mil ) , & y Avg. Streamflow (cfs): 61 b
7 Q 10 (cfs) g S .Z Winter 7Q 10 (cfs) 1 ZL • 30Q2 (cfs) t j -q.-4
Toxicity Limits: IWC % Acute/Chronic
Instream Monitoring:
Parameters
Upstream Location
Downstream Location
Effluent
Characteristics
Summer
Winter
BOD5 (mg/1)
b
3 v
NH -N (mg/1)
3
MONftpQ.
nti6Nii0-k_
D.O. (mg/1)-
TSS (mg/1)
3a
3 0
F. Col. (/100 ml)
zoo
Z.o 0
pH (SU)
KZZIDVAL

ROAD CLASSIFICATION
PRIMARY HIGHWAY LIGHT -DUTY ROAD, HARD OR
HARD SURFACE ® IMPROVED SURFACE
SECONDARY HIGHWAY
HARD SURFACE ® UNIMPROVED ROAD
Latitude 35°20'02" Longitude 83°35'30"
Map # F4SE Sub -basin 04-04191Q.-Z-
Stream Class B-Trout
Discharge Class 10 13 02 40
Receiving Stream Nantahala River
Design Q MGD Permit expires 10/31/97
SCALE 1:24 000
QUAD LOCATION
Nantahala Outdoor Center
0
NCO057193
° Swain County
tJ a � 03- �S_50, t7LYp N,ogfi'�a6 Al K . ,o-I_ / V,O'fT't" 1 A
,DIQ MAP- s-66a1
'Ljq'60 13-5 " �210 171
17y-00 z-q /6v

Facility Name:
NPDES No.:
Type of Waste:
Facility Status:
Permit Status:
Receiving Stream:
Stream Classification:
Subbasin:
County:
Regional Office:
Requestor:
Date of Request:
Topo Quad:
9
FACT SHEETFOR WASTELOAD ALLOCATION
Nantahala Outdoor Center
NC0057193
100 % Domestic
Existing
Proposed Expansion
Nantahala River
B - Trout
04-04-02
Swain
Asheville
Robson
8/15/96
F 4 S E
Wasteload Allocation Summary
(approach taken, correspondence with region, EPA, etc.)
Request #
Stream Characteristic:
USGS #
Date:
Drainage Area (mi2):
Summer 7Q10 (cfs):
Winter 7Q10 (cfs):
Average Flow (cfs):
30Q2 (cfs):
IWC (%):
1996
164
85.2
122.3
516
177.7
0.07 %
Facility had poor compliance record in 1990 and 1991. Request Region}nput as to probl ms /
and solutions through this period. PecAi .. I A* zoll wQ 5 i �s -- Ila /o co^v1Y
G I� to t 1 k� /i h, j -t7�i) pl�►< f i S SAS cr�ttll `tvaek ',U i i-k e rr�� i C- o1�avti c
WLA is for expansion form 0.020 mg up t�0.040 mgd.
(�rnts. AiDte �ns,� f Cv�"jpJr'uh« Aas Swise�uvhY�Z
Y-1�rop9G� eyC� P o�Phe��or 1=�r�r I�a�if7 , ctft-i'-J:�i
C�n�Tol• New C-aocc�i�re Shou4'P be Y�p�'e Cp�tServd�dLt�7'
Special Schedule Requirements and additional comments from Reviewers:
�i-
vZ��-7`�`v7,. .
Recommended by:--�-i Date: j1 *t b
Farrell Keough
Reviewed by
Instream Assessment
Regional *ggineerin
or:
Permits &
Date:
Date: 3g: Date:
RETURN TO TECHNICAL SERVICES BY:
SEF24M'

t
2
CONVENTIONAL PARAMETERS
Existing Limits:
Monthly Average
Wasteflow (MGD):
0.020
BOD5 (mg/1):
30
NH3N (mg/1):
monitor
DO (mg/1):
-
TSS (mg/1):
30
Fecal Coliform (/100 ml):
200
Residual Chlorine (µg/1):
-tt►erriter , S
Recommended Limits:
Monthly Average
Wasteflow (MGD):
U020 61,04-0
BOD5 (mg/1):
30
NH3N (mgft
monitor
DO (mg/1):
-
TSS (mg/1):
30
Fecal Coliform (/100 ml):
200
pH (SU):
6-9
Residual Chlorine (µgft
28
Parameter(s) affected: Limits Changes Due To:
Residual Chlorine New and Existing T15A: 02H 0.103 (la) (c) and current SOP
No parameters are water quality limited, but this discharge may affect future allocations.
MISCELLANEOUS INFORMATION & SPECIAL CONDITIONS
Adequacy of Existing Treatment
Has the facility demonstrated the ability to meet the proposed new limits with existing treatment facilities?
Yes No
If no, which parameters cannot be met?
Would a "phasing in" of the new limits be appropriate? Yes No
If yes, please provide a schedule (and basis for that schedule) with the regional office
recommendations:
If no, why not?
curte,01.0
a
Special Instructions or Conditions
Wasteload sent to EPA? (Major) (Y or N)
(If yes, then attach updated evaluation of facility, including toxics spreadsheet, modeling analysisif modeled at
renewal, and description of how it fits into basinwide plan)
Additional Information attached? (Y or N) If yes, explain with attachments.

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SUMMER
NANTAHALA OUTDOOR CENTER
SECONDARY LIMITS RECOMMENDED
---------- MODEL RESULTS ----------
Discharger NANTAHALA OUTDOOR CENTER
Receiving Stream NANTAHALA RIVER
----------------------------------------------------------------------
The End D.O. is 8.52 mg/l.
The End CBOD is 1.86 mg/l.
The End NBOD is 0.94 mg/l.
--------------------------------------------------------------------=-
WLA
WLA
WLA
DO Min
CBOD
NBOD
DO
Waste Flo
(mg/1)
------
Milepoint
---------
Reach #
-------
(mg/1)
----
(mg/1)
----
(mg/1)
--
(mgd)
Segment
1
7.71
0.00
1
---------
Reach
1
45.00
90.00
0.00
0.04000
Reach
2
0.00
0.00
0.00
0.00000
Reach
3
0.00
0.00
0.00
0.00000
Segment
2
6.58
0.00
1
Reach
1
45.00
24.75
0.00
0.00780
Segment
3
8.50
0.00
1
Reach
1
0.00
0.00
0.00
0.00000
Facility Name:
NPDES No.:
Type of Waste:
Facility Status:
Permit Status:
Receiving Stream:
Stream Classification:
Subbasin:
County:
Regional Office:
Topo Quad:
Requested by:
Request Date:
Nantahala Outdoor Center
N 00057193
100 % Domestic
Existing
Renewal
Nantahala River
B - Trout
04-04-02
Swain
Asheville
F4SE
Robson
8/15/96
8508
Stream Characteristic:
USGS #
Date:
1996
Drainage Area (mi2):
164
Summer 7010 (cfs):
85.2
Winter 7010 (cfs):
122.3
Average Flow (cfs):
516
3002 (cfs):
177.7
IWC (%):
0.07 %
1983: modeled w/ 30 / 30, 200 fecal, 6 - 9 pH, and 1.0 mg/I residual chlorine recommended for flows of 0.010, 0.020, and 0.030 mgd.
1988: renewed w/ existing limits and residual chlorine of 0.5 mg/I [Daily Average] and 0.75 mg/I [Daily Maximum]
This facility has requested an expansion from 0.020 mgd up to 0.040 mgd. Because of the high 7010 and slopes in this
waterbody, the modeling analysis indicates continued secondary treatment would be required. Also, a 28 µg/I residual
chlorine limit should be applied, (as a fecal coliform limit already exists in permit and this is a trout water classified
receiving stream)
note that facility had many violations in 1990 and 1991

SUMMER
NANTAHALA OUTDOOR CENTER
EXPANSION
TO 0.040 MGD
Seg #
I Reach #
i Seg Mi I
D.O. I
CBOD I
NBOD I
Flow
�1JRe3TPhR�fi 1
1
0.00
7.71
2.03
1.06
85.26
DvYdaoe-- 1
1
0.10
7.88
2.03
1.06
85.68
Ccnn%z-4Z- 1
1
0.20
8.02
2.02
1.06
86.09
Qw=v•vHod
1
0.30
8.12
2.01
1.05
86.51
1
1
0.40
8.21
2.01
1.05
86.93
1
1
0.50
8.27
2.00
1.05
87.34
1
1
0.60
8.33
2.00
1.04
87.76
1
1
0.70
8.37
1.99
1.04
88.17
1
1
0.80
8.40
1.98
1.03
88.59
1
2
0.80
8.40
1.98
1.03
88.59
1
2
0.90
8.41
1.98
1.03
89.01
1
2
1.00
8.42
1.98
1.03
89.42
•,, 1
4'
2
1.10
8.43
1.97
1.02
89.84
1
2
1.20
8.44
1.97
1.02
90.25
.� 1
2
1.30
8.45
1.96
1.02
90.67
1
2
1.40
8.45
1.96
1.01
91.09
1
2
1.50
8.46
1.95
1.01
91.50
1
2
1.60
8.46
1.95
1.00
91.92
1
2
1.70
8.47
1.94
1.00
92.33
1
2
1.80
8.47
1.94
1.00
92.75
1
2
1.90
8.47
1.93
0.99
93.17
1
2
2.00
8.48
1.93
0.99
93.58
1
2
2.10
8.48
1.93
0.99
94.00
1
2
2.20
8.48
1.92
0.98
94.41
1
2
2.30
8.48
1.92
0.98
94.83
1
2
2.40
8.48
1.91
0.97
95.25
1
2
2.50
8.49
1.91
0.97
95.66
1
3
2.50
8.49
1.91
0.97
95.66
1
3
2.70
8.50
1.90
0.96
96.49
1
3
2.90
8.50
1.89
0.96
97.33
vt. 2
1
0.00
6.58
8.33
4.50
0.08
"N 2
1
0.05
8.03
7.69
4.13
0.09
1
0.10
8.35
7.14
3.83
0.10
�uj: o •oos•
1
0.15
8.43
6.67
3.56
0.10
2
1
0.20
8.45
6.26
3.33
0.11
3
1
0.00
8.50
1.90
0.96
97.44
3
1
0.10
8.50
1.89
0.96
97.85
3
1
0.20
8.51
1.89
0.96
98.27
3
1
0.30
8.51
1.88
0.95
98.69
3
1
0.40
8.51
1.88
0.95
99.10
3
1
0.50
8:51
1.87
0.95
99.52
3
1
0.60
8.51
1.87
0.94
99.93
3
1
0.70
8.51
1.87
0.94
100.35
3
1
0.80
8.51
1.86
0.94
100.77
3
1
0.90
8.52
1.86
0.94
101.18
Seg # I
Reach #
I Seg Mi I
D.O. I
CBOD I
NBOD I
Flow

*** MODEL SUMMARY DATA ***
Discharger : NANTAHALA OUTDOOR CENTER Subbasin 040402
Receiving Stream : NANTAHALA RIVER Stream Class: B - TROUT
Summer 7Q10 : 85.2 Winter 7Q10 : 122.3
Design Temperature: 23.0
ILENGTHI SLOPEI VELOCITY 1.DEPTHI Kd I Kd I Ka I Ka I KN 1. KN I KNR I KNR I SOD I SOD I
I mile I ft/miI fps I ft Idesignl @20 Idesignl @20 Idesignl @20 Idesignl @20 Idesignl @20 1
-------------------------------------------------------------------------------------------------------------------
I I I I I I I I I I I I I I I
Segment 1 1 0.801 40.001 1.156 1 2.24 1 0.54 1 0.47 143.44 1 40.691 0.63 1 0.50 1 0.63 1 0.00 1 0.00 1 0.00 1
Reach 1 1 1 1 1 1 1 1 1 1 1 1 1 1
-------------------------------------------------------------------------------------------------------------------
I I I I I I I I I I I I I I I
Segment 1 1 1.701 23.501 1.035 1 2.44 1 0.42 1 0.36 122.85 1 21.401 0.63 1 0.50 1 0.63 1 0.00 1 0.00 1 0.00 1
Reach 2 1 1 1 1 1 1 1 1 1 1 1 1 1
-------------------------------------------------------------------------------------------------------------------
I I I I I I I I I I I I I I I
Segment 1 1 0.401 30.801 1.159 1 2.36 1 0.48 1 0.42 133.53 1 31.411 0.63 1 0.50 1 0.63 1 0.00 1 0.00 1 0.00 1
Reach 3 1 1 1 1 1 1 1 1 1 1 1 1 1
-------------------------------------------------------------------------------------------------------------------
I I I I I I I I I I I I I I I
Segment 2 1 0.201267.001 0.113 1 0.24 1 0.56 1 0.48 153.37 1 50.001 0.63 1 0.50 1 0.63 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 I I I I I I I I I I I I I I
Segment 3 1 0.901 30.801 1.183 1 2.37 1 0.49 1 0.42 134.24 1 32.071 0.63 1 0.50 1 0.63 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
-----------------------------------------------------------------------------------------------------
Flow
I CBOD
I NBOD I
D.O. I
1 cfs
I mg/1
I mg/1 I
mg/1 I
Segment 1
Reach 1
Waste
1 0.062
1 45.000
1 90.000 1
0.000
Headwatersl 85.200
1 2.000
1 1.000 1
7.720
Tributary
1 0.000
1 2.000
1 1.000 1
7.720
* Runoff
1 4.160
I 2.000
1 1.000 1
7.720
Segment 1
Reach 2
Waste
1 0.000 1
0.000
1 0.000 1
0.000
Tributary
1 0.000 1
2.000
1 1.000 1
7.720
* Runoff
1 4.160 1
2.000
1 1.000 1
7.720
Segment 1
Reach 3
Waste
1 0.000 1
0.000
1 0.000 I
0.000
Tributary
1 0.000 1
2.000
1 1.000 1
7.720
* Runoff
1 4.160 1
2.000
1 1.000 I
7.720
Segment 2
Reach 1
Waste
1 0.012 145.000
1 24.750 I
0.000

+ a
Headwatersl 0.070 1 2.000 1 1.000 1 7.720
Tributary 1 0.000 1 2.000 1 1.000 1 7.720
* Runoff 1 0.150 1 2.000 1 1.000 1 7.720
Segment 3 Reach 1
Waste 1
0.000 1
0.000 1
0.000 1
0.000
Headwatersl
0.000 1
2.000 1
1.000 1
7.720
Tributary 1
0.000 1
2.000 1
1.000 1
7.720
* Runoff 1
4.160 1
2.000 1
1.000 1
7.720
* Runoff flow is in cfs/mile

M
I
Page 1
Note for Farrell Keough
From: Dave Goodrich
Date: Jul 24, 1994 5:28 PM
Subject: RE: streamlined?
To: Farrell Keough
Yep. Streamlined.
From: Farrell Keough on Fri, Jul 22, 1994 143 PM
Subject: streamlined?
To: Dave Goodrich
Nantahala Outdoor Center
NC0057193
last WLA 1988
just checking, thanks