NC0032115_Permit Issuance_19970929

State of North Carolina
Department of Environment,
Health and Natural Resources
Division of Water Quality
James B. Hunt, Jr., Governor
Wayne McDevitt, Secretary
A. Preston Howard, Jr., P.E., Director
Mayor Charles B. VonCanon
200 Park Avenue
P.O. Box 156
Banner Elk, North Carolina 28604
Dear Mr. VonCanon:
AWA
E)EHNR
September 29, 1997
Subject: NPDES Permit Issuance
Permit No. NC0032115
Banner Elk WWTP
Avery County
In accordance with your application for discharge permit received on March 21, 1997 by the
Division, we are forwarding herewith the subject permit to discharge under 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 and as subsequently amended.
Summarized changes to the permit are:
• The Supplement to Cover page description of treatment units was updated.
• Requirements for NH3, Temperature. and Total Residual Chlorine were changed per updated
.0500 regulations regarding minimum monitoring frequencies for all facilities throughout North
Carolina.
• A Total Residual Chlorine footnote was added to monitor for chlorine only if it is used.
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 demand is
made, this decision shall be final and binding.
Please take notice that this permit is not transferable except after notice to the Division of Water
Quality. Part II, E.4. addresses the requirements to be followed in case of change in ownership or
control of this discharge. The Division of Water Quality may require modification or revocation and
reissuance of the permit.
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, the Coastal Area
Management Act or any other Federal or Local governmental permit that may be required.
If you have any questions concerning this permit, please contact Mary Cabe at telephone number
[phone], extension 518.
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 Section
NPDES Unit
Point Source Compliance Enforcement Unit
C. Shannon Baldwin / Town Manager
P.O. Box 29535, Raleigh, North Carolina 27626-0535 Telephone [phone] FAX [phone]
An Equal Opportunity Affirmative Action Employer 50% recycled/ 10% post -consumer paper

Permit No. NC0032115
STATE OF NORTH CAROLINA
DEPARTMENT OF ENVIRONMENT, HEALTH, 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 Banner Elk
is hereby authorized to discharge wastewater from a facility located at
Banner Elk WWTP
1/4 mile west of Highway 184
near Banner Elk
Avery County
to receiving waters designated as the Elk River in the Watauga River Basin
in accordance with effluent limitations, monitoring requirements, and other conditions set forth in
Parts I, II, III, and IV hereof.
This permit shall become effective November 1, 1997.
This permit and authorization to discharge shall expire at midnight on September 30, 2002.
Signed this day September 29, 1997.
Original Signed By
David A. Goodrich
A. Preston Howard, Jr., P.E., Director
Division of Water Quality
By Authority of the Environmental Management Commission

Permit No. NC0032115
SUPPLEMENT TO PERMIT COVER SHEET
Town of Banner Elk
is hereby authorized to:
1. Continue to operate an existing 0.60 MGD wastewater treatment facility consisting of an influent
bar screen, communitor, grit chamber, grit removal, flow equalization, two aeration basins, one
clarifier with return sludge, aerobic digester, UV disinfection, flow measuring and totalizing
equipment, standby power and sludge drying beds located at Banner E1k WWTP, 1/4 mile west
off Highway 184, on NCSR 1342 near Banner E1k, Avery County (See Part III of this
Permit), and
2. Discharge from said treatment works at the location specified on the attached map into the Elk
River which is classified Class C-Trout waters in the Watauga River Basin.

/Elk .11ey
ROAD CLASSIFICATION
PRIMARY HIGHWAY
HARD SURFACE
SECONDARY HIGHWAY
HARO SURFACE L_I
LIGHT -DUTY ROAD. HARD OR
IMPROVED SURFACE
UNIMPROVED ROAD
Latitude: 36'09'27" Longitude: 81'53'10"
Map # C11NW Sub -basin 040201
Stream Class &Trout
Discharge Class 01
Receiving Stream f]k Fiver
Permit exp. 9/30/02 QW 0.6 MGD
0
SCALE 1:24 000
0 1 MILE
7000 FEET
1
0 1 KILOMETER
i I
CONTOUR INTERVAL 40 FEET
QUAD LOCATION
Town of Banner Elk WWTP
NC0032115
Avery County

A. (). EFFLUENT LIMITATIONS AND MONITORING REQUIREMENTS FINAL Permit No. NC00321 15 ,
During the period beginning on the effective date of the permit and lasting until expiration, the Permittee is authorized to discharge from outfall
serial number 001. Such discharges shall be limited and monitored by the permittee as specified below:
Effluent Characteristics
Flow
BOD, 5 Day, 20 °C**
Total Suspended Residue**
Fecal Coliform (geometric mean)
Total Residual Chlorine***
Temperature, °C
Total Nitrogen (NO2 + NO3 + TKN)
Total Phosphorus
NH3 as N (April 1 - Oct. 31)
NH3 as N (Nov. 1 - March 31)
Discharge Limitations
Monthly Avg, Weekly Avg. Daily Max
0.600 MGD
30.0 mg/I 45.0 mg/I
30.0 mg/I 45.0 mg/I
200 /100 ml 400 /100 ml
4.5 mg/I
12.7 mg/I
* Sample locations: E - Effluent, I - Influent
28 µg/I
Monitoring
Measurement
Frequency
Continuous
3/Week
3/Week
3/Week
3/Week
Daily
Semi-annually
Semi-annually
3/Week
3/Week
Requirements
Sample *Sample
Type Location
Recording I or E
Composite E, I
Composite E, I
Grab E
Grab E
Grab E
Composite E
Composite E
Composite E
Composite E
** The monthly average BOD5 and Total Suspended Residue concentrations shall not exceed 15% of the respective influent values (85%
removal).
*** Total Residual Chlorine monitoring is required only if chlorine is utilized in the treatment process.
The pH shall not be less than 6.0 standard units nor greater than 9.0 standard units and shall be monitored three times per week at the effluent
by grab sample.
There shall be no discharge of floating solids or visible foam in other than trace amounts.

*Z
Staff Review and Evaluation
NPDES Wastewater Permit
To SDP: 4/10/97
Back from SDP/to region: 6/19/97
FACILITY INFORMATION
Facility Town of Banner Elk WWTP
NPDES No. NC0032115
Design Flow (MGD) 0.6
Facility Class III
STREAM CHARACTERISTICS
Stream Name Elk River
Stream Class C-Trout
Sub -basin 04-02-01
Drainage Area (mi2) 11.9
S7Q10 (cfs) 4.2
W7Q10 (cfs) 6.4
30Q2 (cfs) 9.0
IWC (%) 18
Proposed Changes
Parameters Affected
Basis for change(s)
Added footnote stating that
monitoring is only required if
chlorine is used.
TRC
Division policy.
Changed monitoring frequencies
NH3, Temp, TRC
.0500 regs
Compliance Schedule: N/A
Special Condition(s): N/A
Permits & Engineering Comments:
Compliance inspection, 10/8/96 .RO requested facility submit schedule for new stand-by generator
installation. No record of this in Central Files.
-EZ�S' pS
Facility seems to be 1/4 mile west of Hwy 194, not 184. RO, please verify. ✓ (Y.'
ATC issued 9/28/90. SR 2/10/93 states that this ATC is for expansion from 0.33 to 0.6 and that
construction is expected to be complete by 12/93. Updated Sup to Cover page.
Recommend renewal of NPDES permit with the above changes.
Prepared by: %,j
Regional Office Evaluation and Recommendations: A tiwrj.
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NC0032115
Banner Elk WWTP
Elk River C-Trout 8-22-(3)
From Sugar Creek to NC -Tenn State line
Residual Chlorine
7010 (CFS)
DESIGN FLOW (MGD)
DESIGN FLOW (CFS)
STREAM STD (UG/L)
UPS BACKGROUND LEVE
IWC (%)
Allowable Concentration
Fecal Limit
Ratio of 4.5 :1
Ammonia as NH3
(summer)
4.2 7010 (CFS)
0.6 DESIGN FLOW (MGD)
0.93 DESIGN FLOW (CFS)
17.0 STREAM STD (MG/L)
0 UPS BACKGROUND LEVE
18.13 IWC (%)
93.77 Allowable Concentration
Ammonia as NH3
(winter)
7010 (CFS)
200/100m1 DESIGN FLOW (MGD)
DESIGN FLOW (CFS)
STREAM STD (MG/L)
UPS BACKGROUND LEVE
IWC (%)
Allowable Concentration
4.2
0.6
0.93
1.0
0.22
18.13
4.52
6.4
0.6
0.93
1.8
0.22
12.69
12.67