HomeMy WebLinkAboutWQ0000911_Final Permit_19900103State of North Carolina
Department of Environment, Health and Natural Resources
Division of Environmental Management
512 North Salisbury Street • Raleigh, North Carolina 27611
James G. Martin, Governor
William W. Cobey, Jr., Secretary
Mr. William Robinson
Walnut Island Sanitary District
PO Box. 250
Grandy, NC 27939
Dear Mr. Robinson:
Charles R. Wakild
Acting Director
January 3, 1990
Subject: Permit No. WQ0000911
Walnut Island Sanitary District
Sewer Extension and Subsurface
Treatment and Disposal System
Currituck County
In accordance with your application for permit renewal received October 27, 1989, we are
forwarding herewith Permit No. WQ0000911, dated January 3, 1990, 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 December 31, 1991, and shall
be subject to the conditions and limitations as specified therein. This permit shall also supersede
Permit No. WQ0000911 issued April 3, 1989.
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, conforming
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
9191733-5083.
cc:
Sincerely,
I
ele
s R. Wald
Currituck County Health Department
Washington Regional Office
Groundwater Section
Pollution Prevention Pays '
P.O. Box 27687, Raleigh, North Carolina 27611-7687 Telephone 919-733-7415
An Equal Opportunity Affirmative Action Employer
NORTH CAROLINA
ENVIRONMENTAL MANAGEMENT COMMISSION
DEPARTMENT OF ENVIRONMENT, HEALTH AND NATURAL RESOURCES
RALEIGH
SUBSURFACE DISPOSAL SYSTEM PERMIT
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 low pressure pipe disposal fields, with all necessary
piping, valves, and appurtenances to serve Walnut Island Sanitary District with no discharge of
wastes to the surface waters, pursuant to the application received October 27, 1989 and in
conformity with the project plan, specifications, and other supporting data subsequently filed and
approved by the Department of Environment, Health and Natural Resources and considered a part
of this permit.
This permit shall be effective from the date of issuance until December 31, 1991, and shall
be subject to the following specified conditions and limitations:
PERFORMANCE STANDARDS
In the event that the facilities fail to perform satisfactorily, including the creation of
nuisance conditions, the Permittee shall take immediate corrective action, including
those as may be required by this Division, such as construction of additional or
replacement wastewater treatment or disposal facilities.
2. 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.
3. This permit shall become voidable if the soils fail to adequately absorb 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.
4. Adequate measures shall be taken to divert stormwater from the disposal area and
prevent wastewater runoff from the subsurface disposal field.
5. The sludge generated from these treatment facilities must be disposed of in
accordance with General Statute 1.43-215.1 and in a manner approved by the North
Carolina Division of Environmental Management.
6. A usable reserve area shall be maintained for wastewater disposal. The reserve area
shall have the capability of accommodating the average daily flow of the facility
being served without exceeding the loading rates of the reserve area while meeting all
required buffer requirements.
7. Diversion or bypassing of the untreated wastewater from the treatment facilities is
prohibited.
8. 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.
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.
aintained.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.
9. Construction of the sewers, pump stations, and force mains 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.
11. OPERATION AND MAINTENANCE REQUIREMENTS
1. The facilities shall be properly maintained and operated at all times.
2. The Permittee shall employ a certified wastewater treatment plant operator to be in
responsible charge of the wastewater treatment facilities. The operator must hold a
certificate of the grade at least equivalent to the classification assigned to the
wastewater treatment facilities by the Certification Commission.
3. The application rate to the disposal fields shall not exceed 0.75 gallons per day per
square foot.
4. 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.
5. No traffic or equipment shall be allowed on the disposal area except while
installation occurs or while normal maintenance is being performed.
6. A suitable cover shall be maintained on the disposal fields and the fields shall be kept
mowed. The clippings shall be removed to prevent the build up of thatch.
7. The low pressure lines shall be purged monthly using potable water or air pressure
and the pressure adjusted on the distribution lines to approved specifications.
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III. MONITORING AND REPORTING REQUIREMENTS
1. Any monitoring deemed necessary by the Division of Environmental Management to
insure surface and ground water protection will be established and an acceptable
sampling reporting schedule shall be followed.
2. Adequate records showing all maintenance shall be maintained by the Permittee.
These records should include but are not limited to the following:
Items
a) Individual dosing pump operation
b) Individual field rotation
c) High water alarms
d) Residual pressure on highest and
lowest lateral on each subfield
e) Residual pressure on all laterals
Inspection Fr uenc
Weekly
Weekly
Weekly
Monthly
Sezni-annually
Two copies of all operation and maintenance records (as specified in condition 111 2)
shall be submitted annually on or before January 31 of the following year to the
following address:
NC Division of Environmental Management
Water Quality Section
Facility Assessment Unit
PO Box 27687
Raleigh, NC 27611-7687
3. A record shall be maintained of all sludge removed from this facility. The record
shall include the name of the hauler, permit authorizing the disposal or a letter from a
municipality agreeing to accept the sludge, date the sludge was hauled, and volume
of sludge removed.
4. Noncompliance Notification:
The Permittee shall report by telephone to the Washington Regional Office,
telephone no. 919-946-6481, as soon as possible, but in no case more than 24 hours
or on the next working day following the occurrence or first knowledge of the
occurrence of any of the following:
a. Any occurrence at the wastewater treatment facility which results in the
treatment of significant amounts of wastes which are abnormal in quantity or
characteristic, such as the dumping of the contents of a basin or tank; the known
passage of a slug of hazardous substance through the facility; or any other
unusual circumstances.
b. Any process unit failure, due to known or unknown reasons, that render the
facility incapable of adequate wastewater treatment such as mechanical or
electrical failures of pumps, aerators, compressors, etc.
c. Any failure of a pumping station, sewer line, or treatment facility resulting in a
by-pass directly to receiving waters without treatment of all or any portion of
the influent to such station or facility.
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d. Any time that self-monitoring information indicates that the facility has gone out
of compliance with its permit limitations.
Persons reporting such occurrences by telephone shall also file a written report in
letter form within 15 days following first knowledge of the occurrence. This report
must outline the actions taken or proposed to be taken to ensure that the problem
does not reoccur.
GROUNDWATER REQUIREMENTS
1. Any groundwater quality monitoring as deemed necessary by the Division of
Environmental Management shall be provided.
2. The four existing monitor wells must be sampled every March, May, July,
September, and November for the following parameters:
Iron (0.3) NO3 (10.0) Ammonia Nitrogen
TOC pH (6.5-$.5 standard units Water Level
Phenol TDS (500.0) Chloride (250.0)
TOX (in November only)
The measurement of water level must be made prior to sampling for the remaining
parameters.
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 TOC 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 TQC concentration. If the TOC concentration
as measured in the backgrgund monitor well exceeds 10 mg/l, this concentration will
be taken to represent the naturally occurring TOC concentration. Any exceedances
of this naturally occurring TOC concentration in the downgradient wells shall be
subject to the additional sampling and analysis as described above.
The numbers in parentheses represent the maximum allowable concentrations in
groundwater for the various analytical parameters, as specified in 15 NCAC 21,
[Groundwater Classifications and Standards]. Unless otherwise noted, the
concentrations are given in parts per million.
The results of the sampling and analysis shall be sent to the N.C. Division of
Environmental Management on Form GW -59 (Compliance Monitoring Report
Form) every April, August, and December.
The Compliance Boundary 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 Groundwater Quality Standards beyond the Compliance Boundary is subject to
penalty provisions applicable under General Statute 143-215.6(1)a. The sale of
property, by the Pemuttee, which is within or contiguous to the disposal system site
may alter location of the Compliance Boundary.
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For facilities permitted on or after December 30, 1983, the Compliance Boundary is
established at the lesser of 250 feet from the low pressure pipe disposal fields, or 50
feet within the property boundary.
If the title to any property which may affect the location of the Compliance Boundary
is changed, the permittee shall notify the Division Director within 14 days. The
Director shall then establish a modified Compliance Boundary which will be done as
a modification to the Permit.
The REVIEW BOUNDARY for the disposal system is specified by regulations in 15
NCAC 2L, Groundwater Classifications and Standards. A REVIEW BOUNDARY
is established around disposal systems midway between the Compliance Boundary
and the perimeter of the waste disposal area. When the concentration of any
substance equals or exceeds the maximum allowable concentration of that substance
at the REVIEW BOUNDARY, as determined by monitoring, the permittee shall
either (i) demonstrate, through predictive calculations or modeling, that natural site
conditions, facility design and operational controls will prevent a violation of
standards at the Compliance Boundary; or, (ii) submit a plan for the alteration of
existing site conditions, facility design or operational controls that will prevent a
violation of standards at the Compliance Boundary, and implement that plan upon its
approval by the Director.
V. INSPECTIONS
1. Adequate inspection, maintenance, and cleaning shall be provided by the Permittee to
insure proper operation of the subject facilities.
2. The Permittee or his designee shall inspect the wastewater treatment and disposal
facilities to prevent malfunctions and deterioration, operator errors and discharges
which may cause or lead to the release of wastes to the environment, a threat to
human health, or a nuisance. The Permittee shall keep an inspection log or summary
including at least the date and time of inspection, observations made, and any
maintenance, repairs, or corrective actions taken by the Permittee. This log of
inspections shall be maintained by the Permittee for a period of three years from the
date of the inspection and shall be made available upon request to the Division of
Environmental Management or other permitting authority.
3. Any duly authorized officer, employee, or representative of the Division of
Environmental Management may, upon presentation of credentials, enter and inspect
any property, premises or place on or related to the disposal site and facility at any
reasonable time for the purpose of determining compliance with this permit; may
inspect or copy any records that must be kept under the terms and conditions of this
permit; or may obtain samples of groundwater, surface water, or leachate.
VL GENERAL CONDITIONS
1. This permit shall become voidable unless the facilities are constructed in accordance
with the conditions of this permit, 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.
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3. This permit is not transferable. In the event there is desire for the facilities to change
ownership, or there is a name change of the Permittee, a formal permit request must
be submitted to the Division of Environmental Management accompanied by an
application fee, documentation from the parties involved, and other supporting
materials as may be appropriate. The approval of this request will be considered on
its merits and may or may not be approved.
4, Prior to any transfer of this land, a notice shall be given to the new owner that gives
full details of the materials applied or incorporated at this site.
5. The annual administering and compliance fee must be paid by the Permittee within
thirty (30) days after being billed by the Division. Failure to pay the fee accordingly
may cause the Division to initiate action to revoke this permit as specified by 15
NCAC 2H.0205 (c)(4).
6. Failure to abide by the conditions and limitations contained in this permit may subject
the Permittee to an enforcement action by the Division of Environmental
Management in accordance with North Carolina General Statute 143-215.6.
7. The wastewater treatment facility shall connect to a publicly owned areawide sewage
collection system within 180 days of its availability. All discharge of wastewater to
the low pressure pipe distribution system shall cease at the time of the connection to
the sewer system.
The issuance of this permit does not preclude the Permittee from complying with any
and all statutes, rules, regulations, or ordinances which may be imposed by other
government agencies (local, state, and federal) which have jurisdiction.
9. 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.
10. 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.
Permit issued this the 3rd day of January, 1990
TH CAROL A ENVIRONMENTAL MANAGEMENT COMMISSION
Charles R. Waki1 , cting irector
Division of Environ tal Management
By Authority of the nvironmental Management Commission
Permit No. WQ0000911
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