NC0024376_Wasteload Allocation_19930225

NPDES DOCUHENT SCANNING COVER SHEET
NPDES Permit:
NC0024376
The Wilds WWTP
Document Type:
Permit Issuance
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(.41c
tit. ,n,
Wasteload Allocation
Authorization to Construct (AtC)
Permit Modification
Complete File - Historical
Engineering Alternatives (EAA)
Correspondence
Owner Name Change
Technical Correction
Instream Assessment (67b)
Speculative Limits
Environmental Assessment (EA)
Document Date:
February 25, 1993
This document is printed on reuse paper - ignore any
content on the re-srernece side

Refer : Basinwide / Streamline WLA File
Completed By Permits & Engineering
At Front Of Subbasin
PERMIT NO.: NC0024376
PERMITTEE NAME:
FACILITY NAME:
NPDES WASTE LOAD ALLOCATION
The Wilds Christian Association, Inc.
Wilds Camp & Conference Ctr.
Facility Status: Existing
Permit Status: Modification
Major Minor
Pipe No.: 001
Design Capacity: 0.080 MGD
Domestic (% of Flow):
Industrial (% of Flow):
100 %
Comments:
Adding an additional 0.060 MGD Package Plant.
RECEIVING STREAM:Toxaway Creek
Class: C-Trout
Sub -Basin: 03-13-02
Reference USGS Quad: G7SE
(please attach)
County: Transylvania
Regional Office: Asheville Regional Office
Previous Exp. Date: 8/31/97 Treatment Plant Class: 1
Classification changes within three miles:
No change within three miles.
Requested by:
Prepared by:
Mack Wiggins
Reviewed by: (_I Co/tL4 P/no O ?1)
i5oD. 135
Date: 11/10/92
Date: 2/i9/q3
Date:
i f
Modeler
Date Rec.
#
Drainage Area (mi2 ) 70. 7 Avg. Streamflow (cfs): 26.35
7Q10 (cfs) g Winter 7Q10 (cfs) . 5 30Q2 (cfs) % Z
Toxicity Limits: IWC % Acute/Chronic
Instream Monitoring:
Parameters N IA
Upstream Location
Downstream Location
Effluent
Characteristics
-Summer,
—Winter--
BOD5 (mg/1)
30
NH3-N (mg/1)
/770iSirr
D.O. (mg/1)
TSS (mg/1)
30
F. Col. (/100 ml)
200
pH (SU)
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PLOTTED
Comments:

Facility Name:
NPDES No.:
Type of Waste:
Facility Status:
Permit Status:
Receiving Stream:
Stream Classification:
S ubbasin:
County:
Regional Office:
Requestor:
Date of Request:
Topo Quad:
FACT SHEET FOR WASTELOAD ALLOCATION
Request # 7225
The Wilds Christian Association, Inc./Wilds Camp & Conference Center
NC0024376
Domestic - 100%
Existing
Modification
Toxaway Creek
C-Trout
031302
Transylvania
Asheville
Wiggins
11/10/92
G7SE
Stream Characteristic:
USGS #
Date:
Drainage Area (mi2):
Summer 7Q10 (cfs):
Winter 7Q10 (cfs):
Average Flow (cfs):
30Q2 (cfs):
IWC (%):
calculated from
reg. equations
1993
10.7
4.3
6.5
26.75
9.2
2.8
Wasteload Allocation Summary
(approach taken, correspondence with region, EPA, etc.)
This is a request to expand the existing discharge of 0.02 MGD to 0.08 MGD. Discharge has a
dilution ratio of 36:1 and as a result the permit should contain a fecal coliform limit of 200/100 ml.
Secondary limits are predicted to protect the DO standard according to Level B model results. No
instream monitoring is necessary for this discharge.
Special Schedule Requirements and additional comments from Reviewers:
DOV
Recommended by:
Reviewed by
Instream Assessment:
9,776/1-
Regional Su ,'��.or:
Permits & E gineering:
Date: Va 6/7 3
a5g3
93
Date:
Date:
Date:
RETURN TO TECHNICAL SERVICES BY: MAR 0 6 1993
TE@REIWN11"
FEB - 8 1993
WATER QUALITY SECTION
ASHEVILLE REGIONAL IFFICE

2
PARAMETERS
Monthly Average
Wasteflow (MGD): 0.02
BOD5 (mg/1): 30
NH3N (mg/1): monitor
DO (mg/1):
TSS (mg/1): 30.0
Fecal Col. (/100 ml): monitor
pH (SU):
Residual Chlorine (µg/1): 28
Temperature (°C): monitor
TP (mg/1):
TN (mg/1):
Existing Limits:
Recommended Limits:
Monthly Average
WQ or EL
Wasteflow (MGD): 0.08
BOD5 (mg/1): 30 EL
NH3N (mg/1): monitor
DO (mg/1):
TSS (mg/1): 30.0 EL
Fecal Col. (/100 ml): 200 WQ
pH (SU):
Residual Chlorine (µg/1): 28 WQ
Temperature (°C): monitor
TP (mg/1):
TN (mg/1):
x Parameter(s) are water quality limited. For some parameters, the available load capacity of
the immediate receiving water will be consumed. This may affect future water quality based
effluent limitations for additional dischargers within this portion of the watershed.

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MODEL RESULTS
SUMMER
THE WILDS - EXPANSION REQUEST
30/30 LIMITS AT 0.08 MGD
Discharger : WILDS CAMP AND CONFERENCE CENTER
Receiving Stream : TOXAWAY CREEK
The End D.O. is 8.48 mg/l.
The End CBOD is 2.93 mg/l.
The End NBOD is 3.15 mg/l.
Segment 1
Reach 1
Reach 2
Reach 3
WLA WLA WLA
DO Min CBOD NBOD DO Waste Flow
(mg/1) Milepoint Reach # (mg/1) (mg/1) (mg/1) (mgd)
7.50 0.00 1
45.00 90.00 0.00 0.08000
0.00 0.00 0.00 0.00000
0.00 0.00 0.00 0.00000
5AVer7A-s WLaS
o,J Ltd OA 4 Zd1

SUMMER
THE WILDS - EXPANSION REQUEST
• 30/30 LIMITS AT 0.08 MGD
I Seg # I Reach # I Seg Mi I D.O. I CBOD I NBOD I Flow I
- 1 1 0.00 7.50 3.21 3.49 4.42
1 1 0.05 7.70 3.19 3.47 4.43
1 1 0.10 7.86 3.17 3.44 4.45
1 1 0.15 7.98 3.16 3.42 4.46
1 1 0.20 8.08 3.14 3.39 4.47
1 1 0.25 8.15 3.13 3.37 4.48
1 1 0.30 8.21 3.11 3.35 4.49
1 2 0.30 8.21 3.11 3.35 4.49
1 2 0.35 8.30 3.10 3.33 4.50
1 2 0.40 8.35 3.08 3.31 4.51
1 2 0.45 8.39 3.07 3.29 4.52
1 2 0.50 8.42 3.05 3.27 4.53
1 2 0.55 8.45 3.04 3.25 4.55
1 2 0.60 8.46 3.02 3.23 4.56
1 3 0.60 8.46 3.02 3.23 4.56
1 3 0.65 8.47 3.01 3.22 4.57
1 3 0.70 8.47 2.99 3.21 4.58
1 3 0.75 8.47 2.98 3.19 4.59
1 3 0.80 8.47 2.96 3.18 4.60
1 3 0.85 8.48 2.95 3.16 4.61
1 3 0.90 8.48 2.93 3.15 4.62
I Seg # I Reach # I Seg Mi I D.O. I CBOD I NBOD I Flow I

*** MODEL SUMMARY DATA ***
•
Discharger : WILDS CAMP AND CONFERENCE Subbasin : 031302
Receiving Stream : TOXAWAY CREEK Stream Class: C-TR
Summer 7Q10 : 4.3 Winter 7Q10 : 6.5
Design Temperature: 23.
ILENGTHI SLOPE' VELOCITY 1 DEPTH' Kd 1 Kd 1 Ka 1 Ka 1 KN I
I mile I ft/mil fps 1 ft Idesign l @20' Idesign l @20' Idesignl
I 1 1 1 1 1 1 1 I
Segment 1 1 0.301 40.00I 0.349 1 0.92 1 0.46 1 0.40 126.80 1 25.101 0.63
Reach 1 1 1 1 I I 1 1 I I
1 1 1 1 I 1 1 1 I
Segment 1 1 0.301125.00' 0.487 1 0.79 1 0.66 10.57 153.37 1 50.001 0.63
Reach 2 1 1 1 1 1 1 1 1 I
1 I 1 1 1 1 1 1 I
Segment 1 1 0.301400.001 0.686 1 0.67 1 0.94 1 0.82 153.37 1 50.001 0.63
Reach 3 1 I 1 1 1 1 I I I
I Flow 1 CBOD I NBOD I D.O. I
I cfs I mg/1 I mg/1 1 mg/1 I
Segment 1 Reach 1
Waste I 0.124 145.000 190.000 I 0.000
Headwaters) 4.300 I 2.000 1 1.000 1 7.720
Tributary 1 0.000 I 2.000 I 1.000 1 7.720
* Runoff 1 0.220 1 2.000 I 1.000 1 7.720
Segment 1 Reach 2
Waste I 0.000 I 0.000 I 0.000 1 0.000
Tributary I 0.000 1 2.000 1 1.000 1 7.720
* Runoff 1 0.220 1 2.000 1 1.000 1 7.720
Segment 1 Reach 3
Waste I 0.000 I 0.000 I 0.000 1 0.000
Tributary 1 0.000 1 2.000 I 1.000 I 7.720
* Runoff 1 0.220 1 2.000 1 1.000 1 7.720
* Runoff flow is in cfs/mile

SOC PRIORITY PROJECT: Yes No x
IF YES, SOC NUMBER
TO: PERMITS AND ENGINEERING UNIT
WATER QUALITY SECTION
ATTENTION: Mack Wiggins
MAR 29.193
DATE: March 23, 1993
NPDES STAFF REPORT AND RECOMMENDATION
COUNTY Transylvania
PERMIT NUMBER NC0024376
PART I - GENERAL INFORMATION
1. Facility and Address: The Wilds Camp & Conference Center
NCSR 1139
Rosman, North Carolina
2. Date of Investigation: March 22, 1993
3. Report Prepared By: Kerry S. Becker
4. Persons Contacted and Telephone Number: Rick Jensen
704-884-7811
5. Directions to Site: Facility is located on NCSR 1139 approximately
5 miles south Rosman.
6. Discharge Point(s), List for all discharge points:
03 fS
Latitude: 35° 05' !39" Longitude: 82° 52' �"
Attach a USGS map extract and indicate treatment facility site and
discharge point on map.
U.S.G.S. Quad No. G7 SE U.S.G.S. Quad Name Estatoe Gap
7. Site size and expansion area consistent with application?
x Yes No If No, explain:
8. Topography (relationship to flood plain included): Lightly
sloping bordering flood plain
Page 1

9. Location of nearest dwelling: 50 feet
10. Receiving stream or affected surface waters: Toxaway Creek
a. Classification: C Trout
b. River Basin and Subbasin No.: 03-13-02
c. Describe receiving stream features and pertinent downstream
uses: Propagation and maintenance of wildlife; predominantly
rural, mountainous.
PART II - DESCRIPTION OF DISCHARGE AND TREATMENT WORKS
1. a. Volume of wastewater to be permitted 0.080 MGD (Ultimate
Design Capacity)
b. What is the current permitted capacity of the Wastewater
Treatment facility? 0.020 MGD
c. Actual treatment capacity of the current facility (current
design capacity 0.020 MGD
d. Date(s) and construction activities allowed by previous
Authorizations to Construct issued in the previous two years:
No A to C has been issued within the previous two years.
e. Please provide a description of existing or substantially
constructed wastewater treatment facilities: Flow
equalization followed by a 20,000 gpd extended aeration
package plant.
f. Please provide a description of proposed wastewater treatment
facilities: Installation of a 60,000 gpd extended aeration
package plant, a chlorine contact chamber, additional sludge
holding and flow equalization facilities.
g•
Possible toxic impacts to surface waters: none known other
than presence of residual chlorine once chlorination is
begun.
h. Pretreatment Program (POTWs only): N/A
in development approved
should be required not needed
2. Residuals handling and utilization/disposal scheme: yes
a. If residuals are being land applied, please specify DEM
Permit Number
Residuals Contractor
Telephone Number
b. Residuals stabilization: PSRP PFRP OTHER
Page 2

c. Landfill:
d. Other disposal/utilization scheme (Specify): Wasted residuals
are being disposed of at the Town of Brevard's WWTP.
3. Treatment plant classification (attach completed rating sheet):
Class II
4. SIC Codes(s): 7032
Wastewater Code(s) of actual wastewater, not particular facilities
i.e., non -contact cooling water discharge from a metal plating
company would be 14, not 56.
Primary 13 Secondary
Main Treatment Unit Code: 062-7
PART III - OTHER PERTINENT INFORMATION
1. Is this facility being constructed with Construction Grant Funds
or are any public monies involved. (municipals only)? No
2. Special monitoring or limitations (including toxicity) requests:
Fecal monitoring limits should be implemented.
3. Important SOC, JOC, or Compliance Schedule dates: (Please
indicate) N/A
Submission of Plans and Specifications
Begin Construction
Complete Construction
Date
4. Alternative Analysis Evaluation: Has the facility evaluated all
of the non -discharge options available. Please provide regional
perspective for each option evaluated.
Spray Irrigation: Land and soil type available for this option,
however construction costs are approximately twice those for
direct discharge.
Connection to Regional Sewer System: No system is available.
5. Other Special Items:
Page 3

Subsurface: Due to steepness of terrain and cost of construction, .
this alternative was not viable.
Other disposal options:
PART IV - EVALUATION AND RECOMMENDATIONS
The Asheville Regional Office recommends reissuance of NPDES
Permit #NC0024376 allowing expansion to 80,000 gpd. With the
increased flows, the dilution rate will decrease to 25:1. At this
time, no fecal limit is in the permit; a limit should be included.
Signature Report Preparer
r
ater Qual'ty Regional Supervisor
///
Page 4