WQ0000911_Final Permit_19890403

State of North Carolina
Department of Natural Resources and Community Development
Division of Environmental Management
512 North Salisbury Street • Raleigh, North Carolina 27611
James G. Martin, Governor R. Paul Wilms
William W. Cobey, Jr., Secretary Director
April 3, 1989
Mr. Bill Robinson
Walnut Island Sanitary District
P.O. Box 428
Grandy, NC 27939
Subject: Permit No. WQ0000911
Walnut Island Sanitary District
Sewer Extension & Subsurface
Treatment and Disposal System
Currituck County
Dear Mr. Robinson:
In accordance with your application received December 12, 1988, we are forwarding
herewith Permit No. WQ0000911, dated April 3, 1989, to Walnut Island Sanitary District for the
continued operation of the subject sewage collection, treatment and disposal facilities.
This permit shall be effective from the date of issuance until April 1, 1990, and shall be
subject to the conditions and limitations as specified therein. This permit shall also void Permit
No. 10592.
If any parts, requirements, or limitations contained in this permit are unacceptable to
you, you have the right to request an adjudicatory hearing upon written request within 30 days
following receipt of this permit. This request must be in the form of a written petition, confozrning
to Chapter 150B of North Carolina General Statutes, and filed with the Office of Administrative
Hearings, P.O. Box 11666, Raleigh, NC 27604. Unless such demands are made this permit shall
be final and binding.
If you need additional information concerning this matter, please contact Mr. Jack
Floyd at 919/ 733-5083.
cc: Currituck County Health Departrxaent
Washington Regional Office
Sincerely,
aul Wilms
zz.
P.U. Box 27687, Raleigh, North Carolina 27611-7687 Telephone 9[9-733.7015
An Equal Opportunity Affirmative fiction Employer

NORTH CAROLINA
ENVIRONMENTAL MANAGEMENT COMMISSION
DEPARTMENT OF NATURAL RESOURCES AND COMMUNITY
DEVELOPMENT
RALEIGH
For the discharge of sewage, Industrial Wastes, or Other Wastes
In accordance with the provisions of Article 21 of Chapter 143, General Statutes of North
Carolina as amended, and other applicable Laws, Rules, and Regulations
PERMISSION IS HEREBY GRANTED TO
Walnut Island Sanitary District
Currituck County
FOR THE
continued operation of eleven (11) 20 GPM pump stations, a 75 GPM pump station, 7,174 linear
feet of 4 -inch force main, a 30,000 GPD low pressure subsurface wastewater treatment facility
consisting of a 30,000 gallon total capacity concrete septic tank, a 180 GPM effluent pump station
discharging to five (5) 8,000 square foot drainfields, with all necessary piping, valves and
appurtenances to serve Walnut Island Sanitary District With no discharge of wastewater to the
surface waters of the State, pursuant to the application received December 12, 1989 and in
conformity with the project plan, specifications, and other supporting data subsequently filed and
approved by the Department of Natural Resources and Community Development and considered a
part of this permit.
This permit shall be effective from the date of issuance until April 1, 1990, and shall be
subject to the following specified conditions and limitations:
1 1. This permit shall become voidable unless the facilities have been constructed in
accordance with the approved plans, specifications, and other supporting data.
2. This permit is effective only with respect to the nature and volume of wastes described in
the application and other supporting data.
3. The facilities shall be properly maintained and operated at all times.
4. The sewage and wastewater collected by this system shall be treated in the Walnut Island
Sanitary District Wastewater Treatment Facility prior to being discharged into the
receiving stream.

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5. This permit is not transferable.
6. Construction of the sewers shall be so scheduled so as not to interrupt service by the
existing utilities nor result in an overflow or bypass discharge of wastewater to the
surface waters of the State.
7. This permit shall become voidable in the event of failure of the soil to adequately absorb
v the wastes and may be rescinded unless the facilities are installed, maintained, and
operated in a manner which will protect the assigned water quality standards of the
surface waters and ground waters.
8. In the event that the facilities fail to perform satisfactorily, including the creation of
nuisance conditions, the Permittee shall -take such immediate corrective action as may be
required by this Division, including the construction of additional or replacement
wastewater treatment or disposal facilities.
9. The sludge generated from these treatment facilities must be disposed of in accordance with
General Statute 143-215.1 and in a manner approvable by the North Carolina Division of
Environmental Management.
10. The Permittee shall provide for the pump station and force main the following items:
a. Pump on/off elevations located so that 2-8 pumping cycles may be achieved per
hour in the pump station.
5 b . An air relief valve located at all high points along the force main.
c. A screened vent for the wet well.
d. Fillets located in the wet well at the intersection of the flooring and sidewalls.
e. Three feet of cover (minimum) over the force main or the use of ferrous material
where three feet cannot be maintained.
f. Sufficient devices which will protect the pump station from vandals.
g. Flood protection if the pump station is located below the 100 -year flood elevation.
11. Diversion or bypassing of the untreated wastewater from the treatment facility is
prohibited.
12 The Permittee, at least six (6) months prior to the expiration of this permit, shall
request its extension. Upon receipt of the request, the Commission will review the
adequacy of the facilities described therein, and if warranted, will extend the Permit for
such period of time and under such conditions and limitations as it may deem appropriate.

13. The Permittee shall employ a certified wastewater treatment plant operator to be in
responsible charge of the wastewater treatment facilities. Such operator must hold a
certificate of the grade at least equivalent to the classification assigned to the wastewater
treatment facilities by the Certification Commission.
14. The issuance of this permit shall not relieve the Permittee of the responsibility for
damages to surface or groundwaters resulting from the operation of this facility,
15. The facilities shall be effectively maintained and operated as a non -discharge system to
prevent the discharge of any wastewater resulting from the operation of this facility.
16. Adequate inspection, maintenance, and cleaning shall be provided by the Permittee to
insure proper operation of the subject facilities.
17. An acceptable reserve area, equal in size to the approved disposal area, shall be maintained
at all times.
1$. Water from the deep well located at the wastewater treatment facility shall be used only
for maintenance purposes and equipment washdown and shall not be used as a drinking
water supply.
19, Within 90 days of permit issuance, two (2) monitor wells, one (1) upgradient and one
(1) downgradient, shall be installed to monitor groundwater quality. The monitor wells
shall be screened in the upper portion of the "GA" classified groundwaters. The locations
and, construction details for these wells shall be approved by the Washington Regional
Office, from which a well construction permit must be obtained.
20. The two (2) new monitor wells shall be sampled initially after construction and
thereafter every March, May, July, September and November for the following
parameters:
NQ3 Ammonia Nitrogen
pH Chloride
TDS Phenol
TOC Water Level
Iron TOX (In Nov. only)
The measurement of water level must be made prior to sampling for the remaining
parameters.
The two (2) existing monitor wells shall continue to be sampled every March, May, July,
September and November for the parameters specified above.
The analytical methods used for TOX must be capable of detecting the total of all
halogenated organic compounds present at a concentration of 5.0 parts per
billion (ppb) or greater. In the event that a TOX concentration of 5.0 ppb or
greater is detected, any individual halogenated organic compound
(s) present at a concentration at or above the method detection limit (MDL) must be
identified and quantified utilizing EPA methods 601, 602, 604, and 611.

If TQC concentrations greater than 10 mg/1 are detected in any downgradient monitoring
well, additional sampling and analysis must be conducted to identify the individual
constituents comprising this TOC concentration. if the TOC concentration as measured in
the background monitor well exceeds 10 mg/l, this concentration will be taken to
represent the naturally occurring TOC concentration. Any exceedances of this naturally
occurring TQC concentration in the downgradient wells shall be subject to the additional
sampling and analysis as described above.
The results of the sampling and analysis shall be sent to the NC Division of Environmental
Management on Form GW -59 [Compliance Monitoring Report Form] by the end of the
month following the month sampling is required.
The Perimeter of Compliance delineated on the attached site plan for the disposal system is
specified by regulations in 15 NCAC 2L, Classifications and Water Quality Standards
applicable to the groundwater of North Carolina. An exceedance of Compliance is subject
to Statute 143-215.6(1)a. The sale of property, by the Permittee, which is within or
contiguous to the disposal system site may alter location of the Perimeter of Compliance.
If the title to any property which may affect the boundary of the Perimeter of Compliance
is changed, the permittee shall notify the Division Director within 14 days. The Director
shall then establish a modified Perimeter of Compliance which will be done as a
modification to the Permit
For facilities permitted on or after December 30, 1983, the compliance perimeter is
established at the lesser of 250 feet from the point of discharge, or 50 feet within -the
property boundary.
21. Any additional groundwater quality monitoring, as deemed necessary by the Division, shall
be provided.
22. This permit shall void Permit No. 10592.
Permit issued this the 3rd day of April, 1989
NORTH CAROLINA ENVIRONMENTAL MANAGEMENT COMMISSION
f:P:�aul Wilms, Director
Division of Environmental Management
By Authority of the Environmental Management Commission
Permit No. WQ0000911