NC0032123_Permit Issuance_19970919

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
September 19,1997
Mr. Carl Daniel
Carolina Water Service, Inc.
P.O. Box 240705
Charlotte, North Carolina 28224
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Subject: NPDES Permit Issuance
Permit No. NC0032123
Hound Ears WWTP
Watauga County
Dear Mr. Daniel:
In accordance with the application for a discharge permit received on April 1, 1997, the Division is
forwarding herewith the subject 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 US
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 demand is made, this
decision shall be final and binding.
Please take notice this permit is not transferable. Part II, E.4. 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 permit that may be required.
If you have any questions concerning this permit, please contact Paul Clark at telephone number (919)
733-5083, extension 580.
Sincerely,
Original Signed By
David A. Goodrich
A. Preston Howard, Jr., P.E.
cc: Central Files
Winston-Salem Regional Office, Water Quality Section
Mr. Roosevelt Childress, EPA
NDESMI,.
Compliance Enforcement Unit
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

1
Permit No. NC0032123
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,
Carolina Water Service, Inc. of North Carolina
is hereby authorized to discharge wastewater from a facility located at
Hound Ears WWTP
NCSR 1557
north of Shulls Mill
Watauga County
to receiving waters designated as Watauga 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.
The permit shall become effective November 1, 1997
This permit and the authorization to discharge shall expire at midnight on September 30, 2002
Signed this day September 19, 1997
Original Signed By
David- R. Goodrich
A. Preston Howard, Jr., P.E., Director
Division of Water Quality
By Authority of the Environmental Management Commission

SUPPLEMENT TO PERMIT COVER SHEET
Carolina Water Service, Inc. of North Carolina
is hereby authorized to:
Permit No. NC0032123
1. Continue to operate an existing 0.040 MGD package plant and a 0.100 MGD package plant
with sludge basin and ultraviolet disinfection located at Hound Ears WWTP, on NCSR 1557,
north of Shulls Mill, Watauga County (See Part III of this permit), and
2. Discharge wastewater from said treatment works at the location specified on the attached
map into Watauga River which is classified Class B-Trout HQW waters in the Watauga
River Basin.

ROAD CLASSIFICATION
PRIMARY HIGHWAY
HARD SURFACE
LIGHT•DUTY ROAD, HARD OR
IMPROVED SURFACE
SECONDARY HIGHWAY
HARD SURFACE 1i UNIMPROVED ROAD = = _
Latitude 36°10'50" Longitude 81°44'51"
Map # C12NW Sub -basin 040201
Stream Class
B-Trout HOW
Discharge Class
Receiving Stream
4,5,6
Watauga River
Design Q 0.140 MGD Permit expires 9/30/02
0
0
SCALE 1:24 000_
1 MILE
7000 FEET
1 KILOMETER
iz
CONTOUR INTERVAL 20 FEET
CWS/Hound Ears WWTP
NC0032123
Watauga County

A (1) EFFLUENT LIMITATIONS AND MONITORING REQUIREMENTS
Permit No. NC0032123
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
Type
Sample
Locations
Flow
0.140 MGD
Continuous
Recordin.
I or E
BOD, 5-day, 20" C
30.0 mg/I
45.0 mg/I
2/month
Composite
E
Total Suspended Residue
30.0 mg/I
45.0 mg/I
2/month
Composite
E
NH3 as N
24.0 mg/I
2/month
Composite
E
Fecal Coliform
200/100 ml
400/100 ml
2/month
Grab
E
Temperature
Weekly
Grab
E
Total Nitrogen
Semi-annually
Composite
E
Total Phosphorus
Semi-annually
Composite
E
Oil and Grease
30.0 mg/I
60.0 mg/I
2/month
Grab
E
Notes:
1 Sample locations: E - Effluent, I - Influent.
The pH shall not be less than 6.0 standard units nor greater than 9.0 standard units and shall be monitored 2/month at the effluent by grab sample.
There shall be no discharge of floating solids or visible foam in other than trace amounts.

CWS/Hound Ear
NC0032123
Qeff=0.140 MGD
Fecal Limit
Dilution=7Q10S/DESIGN FLOW
Dilution=
200 mg/I
29.5
Ammonia as NH3
(summer)
7Q10 (CFS)
DESIGN FLOW (MGD)
DESIGN FLOW (CFS)
STREAM STD (MG/L)
UPS BACKGROUND LEVEL (MG/L)
IWC (%)
Allowable Concentration (mg/I)
Ammonia as NH3
(winter)
7010 (CFS)
DESIGN FLOW (MGD)
DESIGN FLOW (CFS)
STREAM STD (MG/L)
UPS BACKGROUND LEVEL (MG/L)
IWC ('/c)
Allowable Concentration (mg/I)
6.4
0.14
0.217
1.0
0.22
3.28
24.00
9.3
0.14
0.217
1.8
0.22
2.28
69.51
4/16/97

Facility
NPDES No.
Design Flow (MGD)
Facility Class I
Staff Review and Evaluation
NPDES Wastewater Permit
FACILITY INFORMATION
Carolina Water Service/Hound Ears
NC0032123
0.140 MGD
STREAM CHARACTERISTICS
Stream Name
Stream Class
Sub -basin
Drainage Area (mil)
S7Q10 (cfs)
W7Q10 (cfs)
30Q2 (cfs)
IWC (%)
Watauga River
B-Trout HQW
040201
29
6.4
9.3
14.2
3.28
Proposed Changes
Parameters Affected
Basis for change(s)
Ambient temperature footnote
Instream temperature
clarify language (see note no. 1)
Compliance Schedule: NA
Special Condition(s): NA
Permits & Engineering Comments:
1. Review of 1995-present DMRs indicate effluent temperature exceeded 20° C during July -Sept 1995 and
June -Sept 1996. Ambient temperature of stream greater than 20° C up- and downstream of discharge
during July and August 1995 and July 1996. Yet, these high temperatures were not a result of the
discharge. Thus, recommend ambient temperature footnote language be modified to emphasize
importance of protecting stream. This same modified version has been added to Smoketree Lodge and
The Ponds.
2. The ammonia toxicity mass balance calculation using 7Q10 and permitted flows calculates an
allowable concentration of 24.0 mg/1. Recommend renewal of this limit to protect against potential
instream ammonia toxicity.
3. Recommend elimination of special condition E (not necessary).
Prepared by: '-4
Regional Office Evaluation and Recommendations
-;// 1- 644 bd_sR0) 4.&z./d -

NC0032123 Summary
April 14, 1997
f
Carolina Water Service/Hound/Ear?WWTP has applied to renew their permit to discharge
0.140 MGD treated wastewater.
The treatment system consists of an exisitng 0.040 MGD package plant and a 0.100 MGD
package plant with sludge basin and ultraviolet disinfection.
The treatment system discharges to Watauga River (Class B-Trout HQW) in the Watauga
River Basin.
Compliance Summary
Review of 1995-96 DMRs indicate effluent temperature exceeded 20° C July -Sept 1995 and
June -Sept 1996. Ambient temperature of stream greater than 20° C up- and downstream of
discharge July and August 1995 and July 1996. Yet, the high temperatures were not a
result of the discharge. Thus, recommend ambient temperature footnote language
be clarified. A few high oil and grease values, but none that exceeded limits.
WLA Summary
The ammonia toxicity mass balance calculation using 7Q10 and permitted flows calculates
an allowable concentration of 24.0 mg/l. Recommend renewal of this limit to
protect against ammonia toxicity.
This is not a new or expanding dischargike and thus 02B. 0224 HQW limits do not apply.
Recommend elimination of special condition E (not necessary).
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