NC0083071_Permit Issuance_19980217

State of North Carolina
Department of Environment
and Natural Resources
Division of Water Quality
James B. Hunt, Jr., Governor
Wayne McDevitt, Secretary
A. Preston Howard, Jr., P.E., Director
February 17, 1998
Mr. Bobby Cagle, Jr.
Town of Robbinsville
Post Office Box 126
Robinsville, North Carolina 28771
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NCDENR
Subject: NPDES Permit Issuance
Permit No. NCO083071
Robbinsville WTP
Graham County
Dear Mr. Cagle:
In accordance with the application for discharge permit received on August 11, 1997, the Division is
forwarding herewith the subject state - NPDES permit. This permit is issued pursuant to the requirements of North
Carolina General Statute 143-215.1 and the Memorandum of Agreement between North Carolina and the U.S.
Environmental Protection Agency dated December 6, 1983.
If any parts, measurement frequencies or sampling requirements contained in this permit are unacceptable to
you, you have the right to an adjudicatory hearing upon written request within thirty (30) days following receipt of
this letter. This request must be in the form of a written petition, conforming to Chapter 150B of the North
Carolina General Statutes, and filed with the office of Administrative Hearings, Post Office Drawer 27447, Raleigh,
North Carolina 27611-7447. Unless such a demand is made, this permit shall be final and binding.
Please take notice that this permit is not transferable. Part II, EA. addresses the requirements to be
followed in case of change in ownership or control of this discharge. This permit does not affect the legal
requirements to obtain other permits which may be required by the Division of Water Quality or permits required by
the Division of Land Resources, Coastal Area Management Act, or any other Federal or Local governmental permits
may be required.
If you have any questions or need additional information, please contact Mr. Mark McIntire, telephone
number [phone], extension 553.
Sincerely,
Original Signed By
David A Goodrich
A. Preston Howard, Jr., P.E.
cc: Central Files
Mr. Roosevelt Childress, EPA
Asheville Regional Office, Water Quality
NPDES Unit, Permit File
Point Source Compliance/Enforcement Unit
P.O. Box 29535, Raleigh, North Carolina 27626-0535 Telephone [phone]/FAX [phone]
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Permit No. NCO083071
STATE OF NORTH CAROLINA
DEPARTMENT OF ENVIRONMENT AND NATURAL RESOURCES
DIVISION OF WATER QUALITY
PERMIT
TO DISCHARGE WASTEWATER UNDER THE
NATIONAL POLLUTANT DISCHARGE ELIMINATION SYSTEM
In compliance with the provision of North Carolina General Statute 143-215.1, other lawful standards
and regulations promulgated and adopted by the North Carolina Environmental Management
Commission, and the Federal Water Pollution Control Act, as amended, -
Town of Robbinsville
is hereby authorized to discharge wastewater from a facility located at the
Rock Creek Water Treatment Plant
NCSR 1110
Long Creek Road
Robbinsville
Graham County
to receiving waters designated as Rock Creek in the Little Tennessee River Basin
in accordance with effluent limitations, monitoring requirements, and other conditions set_ forth in Parts I,
H, III, and IV hereof.
This permit shall become effective April 1, 1998
This permit and the authorization to discharge shall expire at midnight on December 31, 2002
Signed this day February 17, 1998
Original Signed By
David .A. Goodrich
A. Preston Howard, Jr., P.E., Director
Division of Water Quality
By Authority of the Environmental Mangement Commission

Permit No. NC0083071
SUPPLEMENT TO PERMIT COVER SHEET
Town of Robbinsville
is hereby authorized to:
1. Continue to operate an existing water treatment facility with discharge from
a filter backwash lagoon at the Rock Creek Water Treatment Plant, NCSR
1110, Long Creek Road, Robbinsville, Graham County (See Part III of this
Permit), and
Discharge from said treatment works at the location specified on the attached
map into Rock Creek which is classified WS-I Trout waters in the Little
Tennessee River Basin.

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ROAD CLASSIFICATION
PRIMARY HIGHWAY LIGKT-DLrrY ROAD. HARD OR
HARD SURFACE IMPROVED SURFACE
SECONDARY HIGHWAY
HARD SURFACE UNIMPROVED ROAD
Latitude. 35016'46" Longitude 83049'05"
-Map # F_3SE Sub -basin 04-05-02
Stream Class WS-I Trout
Discharge Class 100% indusuial
Receiving Stream Rock Creek
Design Q NOL Permit expires -12 / 21 / o
SCALE 1:2'4 000
0 1 MILE
0 7000 FEET
0 1 KILOMETER
CONTOUR INTERVAL 40 FEET
QUAD LOCATION Town of Robbinsville
NCO083071
Graham County
WTP

A. EFFLUENT LIMITATIONS AND MONITORING REQUIREMENTS FINAL
Permit No. NCO083071
During the period beginning on the effective date of the permit and lasting until expiration, the Permittee is authorized to discharge from outfall(s) serial number
001. Such discharges shall be limited and monitored by the Permittee as specified below:
EFFLUENT CHARACTERISTICS
LIMITS
MONITORING REQUIREMENTS
Monthly.
Average
Weekly
_Average
Daily
Maximum
Measurement
Frequency
Sample
T e
Sample
Location'
Flow
Weekly
Instantaneous
E
Total Suspended Solids
30.0 m /L
45.0 m /L
2/Month
Grab
E
Settleable Solids
0.1 ml/L
0.2 ml/L
Weekly
Grab
E
Turbidit 2
Weekly
Grab
U, D
H3
Weekly
Grab
E
Iron
Weekly
Grab
E
Total Residual Chlorine
Weekly
Grab
E
Aluminum
Weekly
Grab
E
Notes:
1 Sample locations: E - Effluent, U - Upstream, D - Downstream
2 The discharge shall not cause the turbidity of the receiving water to exceed 10 NTU. If the turbidity exceeds these levels due to natural background conditions, the
discharge level cannot cause any increase in the turbidity in the receiving water.
3 The pH shall not be less than 6.0 standard units nor greater than 9.0 standard units_
All samples collected shall be of a representative discharge.
There shall be no discharge of floating solids or visible foam in other than trace amounts.
0

Staff Review and Evaluation
NPDES Wastewater Permit
FACILITY INFORMATION
Facility Robbinsville Water Treatment Plant
NPDES No. NC0083071
Design Flow (MGD) NOL - average flow is approximately 7,000 gpd
Facility Class I
STREAM CHARACTERISTICS
Stream Name
Rock Creek
Stream Class
WS-I Trout
Sub -basin
N9502 04-04-04
Drainage Area (mil)
NA
S7Q10 (cfs)
NA
W7Q10 (cfs)
NA
30Q2 (cfs)
NA
IWC (%)
NA
Proposed Changes Parameters Affected Basis for change(s) .
Compliance Schedule: None
Special Condition(s): None
Permits & Engineering Comments:
There have, apparently, been no treatment system modifications since the last permit was issued. This
permit has been drafted without modifications as it was issued most recently in accordance with the
Division's guidance for water treatment plant discharges. Although this facility discharges into a
WS-I Trout stream, no TRC limit is recommended as the compliance data indicates that TRC has not
been detected for the past 24 months. An overall compliance review for this facility indicates that
consistent operation is not a problem. The recommendation is that this permit be renewed with existing
requirements.
Prepared by:
Regional Office Evaluation and Recommendations:

State of North Carolina
Department of Environment,
Health and Natural Resources
Asheville Regional Office
James B. Hunt, Jr., Governor
Jonathan B. Howes, Secretary
MEMORANDUM
ANY•:TA
EDEHNFR
WATER QUALITY SECTION
October 27, 1997
TO: Marcia Toler -
FROM: Keith Haynes
SUBJECT: Comments to Update and Renovation
Little Tennessee River Basin
Subbasin: 04-04-04
As a follow-up to our conservation on October 27, the
following are my comments regarding the subject document:
1) Map 8 - Bear Creek Junction N00055581, has ceased
discharge.
2) Robbinsville WTP NCO083071 started operation in October
1996 and should be added to the basin.
3) Map 4 - Darren Stewart Trout Farm permit number should
be NC0084981.
If this Office can be of further assistance, please advise.
Interchange Building, N
��Voice 704-251-6208 FAX [phone]
59 Woodfln Place, �� C An Equal Opportunity Affirmative Action Employer
Asheville, North Carolina 28801 50% recycled/10% post -consumer paper

SOC PRIORITY PROJECT: Yes No x
IF YES, SOC NUMBER
TO: PERMITS AND ENGINEERING UNIT
WATER QUALITY SECTION
ATTENTION: Charles Alvarez
DATE: February 16, 1993
NPDES STAFF REPORT AND RECW RT RT,. TT. 1 T
COUNTY Graham 04 -0 '- - Ui-
PERMIT NUMBER NCO083071 lxEsSlc-
PART I - GENERAL INFORMATION
1. Facility and Address: Rock Creek Water Treatment Plant
Long Creek Road (NCSR 1110)
Robbinsville, North Carolina
2, Date of Investigation:
3. Report Prepared By: Kerry S. Becker
4. Persons Contacted and Telephone Number: Danny Bridges, McGill
Associates:
704-479-3250
5. Directions to Site: From the intersection of NCSR 1129 (Atoah
Street) and U.S. Highway 129 in Robbinsville, travel on NCSR 1129
to NCSR 1110 (Long Creek Road). Facility is on Long Creek Rd at
confluence of Rock Creek.
6. Discharge Point(s), List for all discharge points:
Latitude: 350 16' 46" Longitude: 830 49' 05"
Attach a USGS map extract and indicate treatment facility site and
discharge point on map.
U.S.G.S. Quad No. F3 SE U.S.G.S. Quad Name Robbinsville, NC
7. Site size and expansion area consistent with application?
x Yes No If No, explain:
8. Topography (relationship to flood plain included): Moderately
sloping, adjacent to Rock Creek.
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9. Location of nearest dwelling: > 100 .feet
10. Receiving stream or affected surface waters: Rock Creek
a. Classification: WS-I Trout to intake; C-Trout below discharge
b. River Basin and Subbasin No.: LTN 04-04-04
C. Describe receiving stream features and pertinent downstream
uses: Rock Creek is used for the those purposes associated
with C Classification and trout and other cold water aquatic
life habitat.
PART II - DESCRIPTION OF DISCHARGE AND TREATMENT WORKS
1. a. Volume of wastewater to be permitted 0.010 MGD (Ultimate
Design Capacity)
b. What is the current permitted capacity of the Wastewater
Treatment facility? N/A
C. Actual treatment capacity of the current facility (current
design capacity 0.070 MGD
d. Date(s) and construction activities allowed by previous
Authorizations to Construct issued in the previous two years:
N/A
e. Please provide a description of existing or substantially
constructed wastewater treatment facilities:
f. Please provide a description of proposed wastewater treatment
facilities: The facility shall consist of an earthen filter
backwash lagoon with a capacity of approximately 70,000
gallons. The lagoon will be equipped with a two level, two
pipe decant device. Maximum decant discharge would be 10,000
gpd.
g. Possible toxic impacts to surface waters: None known.
h. Pretreatment Program (POTWs only): N/A
in development approved
should be required not needed
2. Residuals handling and utilization/disposal scheme: Alum sludge
is to be used in final two feet of coverage for county landfill.
* This information was not included in application package.
Consultant engineer contacted re this; he will notify DEM P&E by
letter.
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: Final two feet of coverage in county landfill.
d. Other disposal/utilization scheme (Specify):
3. Treatment plant classification (attach completed rating sheet):
4. SIC Codes(s): 4941
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 21 Secondary
Main Treatment Unit Code: 002-1
PART III - OTHER PERTINENT INFORMATION
1. Is this facility being constructed with Construction Grant Funds
or are any public monies involved. (municipals only)? Economic
Development Administration is providing assistance with a $500,000
Financial Assistance Award which includes an EDA grant of $300,000
and an Appalachian Regional Commission (ARC) supplementary grant
of $200,000. A remaining balance of $125,000 will be provided by
the Town of Robbinsville.
2. Special monitoring or limitations (including toxicity) requests:
3. Important SOC, JOC, or Compliance Schedule dates: (Please
indicate)
Date
Submission of Plans and Specifications
Begin Construction
Complete Construction
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: The Town of Robbinsville does not own 4+ acres
of suitable land for spray irrigation. Adjacent land, not owned
by the Town, is not topographically suitable for spray irrigation
as well.
Page 3

Connection to Regional Sewer System: This option is available and
was originally proposed; however, economic costs associated with
this project were very high compared to the discharge option,
approximately $300,000 for connection to the Robbinsville WWTP
versus approximately $4,000 for the discharge.
Subsurface: As with spray irrigation, adequate suitable land was
not available.
Other disposal options:
S. Other Special Items:
PART IV - EVALUATION AND RECOMMENDATIONS
The Asheville Regional Office recommends issuance of the NPDES
Permit for the discharge of filter backwash water from the Town of
Robbinsville's Water Treatment Plant.
Y, dwat--'�
Signat _ of Report Preparer
WaXer Qua"ity Regional Supervisor
Date
Page 4