HomeMy WebLinkAboutWQ0000798_Final Permit_19990421State of North Carolina
Department of Environment
and Natural Resources
Division of Water Quality
James B. Hunt, Jr., Governor
Wayne McDevitt, Secretary
Kerr T. Stevens, Director
April 21, 1999
The Honorable Carson Durham, III, Mayor
Town of Shallotte
Post Office Box 2986
Shallotte, North Carolina 28459
Dear Mayor Durham:
NCDENR
NORTH CAROLINA DEPARTMENT OF
ENVIRONMENT AND N,auRAL RESOURCES
Subject: Permit No. WQ0000798
Town of Shallotte
Wastewater Treatment and Spray Irrigation
Brunswick County
In accordance with your renewal request received November 30, 1998, we are forwarding herewith Permit No.
WQ0000798, dated April 21, 1999, to the Town of Shallotte for the continued operation of the subject wastewater
treatment and spray irrigation facilities. This permit has been modified to exclude some previously permitted land. The
permitted acreage in Fields 3, 4, and 5 may be increased if and when the Division of Water Quality receives proof of
ownership of the additional land required to support the total acreage that was originally permitted. In addition, the
maximum allowable flow rate has been adjusted accordingly.
This permit shall be effective from the date of issuance until March 31, 2004, shall void Permit No. WQ0000798
issued March 14, 1997, and shall be subject to the conditions and limitations as specified therein. Please pay particular
attention to the monitoring requirements in this permit. Failure to establish an adequate system for collecting and
maintaining the required operational information will result in future compliance problems.
If any parts, requirements, or limitations contained in this permit are unacceptable, you have the right to request
an adjudicatory hearing upon written request within thirty (30) days following receipt of this permit. 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, P.O. Drawer 27447, Raleigh, NC 27611-7447. Unless such demands are made this
permit shall be final and binding.
If you need additional information concerning this matter, plAcontacJoniCardin at (919) 733-5083
extension 509.
Kerr T. Stevens
cc: Brunswick County Health Department
Wilmington Regional Office, Water Quality Section
Wilmington Regional Office, Groundwater Section
Bob Cheek, Groundwater Section, Central Office
Technical Assistance and Certification Unit
Non -Discharge Compliance/Enforcement Unit
PO Box 29535, Raleigh, North Carolina 27626-0535 Telephone (919) 733-5083 Fax (919) 733-0719
An Equal Opportunity Affirmative Action Employer 50% recycled/10% post -consumer paper
NORTH CAROLINA
ENVIRONMENTAL MANAGEMENT COMMISSION
DEPARTMENT OF ENVIRONMENT AND NATURAL RESOURCES
RALEIGH
SPRAY IRRIGATION 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 THE
Town of Shallotte
Brunswick County
continued operation of a 179,660 -GPD wastewater treatment facility with approximately 7,400 linear feet of 8 -
inch influent force main, consisting of an influent bar screen, an 11.6 -acre treatment and storage lagoon with a
40 -mil HDPE impermeable liner, effluent trash screen, chlorine contact tank, gaseous chlorine feed system and
contact basin for effluent disinfection, dual 820 -GPM vertical turbine irrigation pumps with in-line strainers,
ultrasonic influent and effluent flow meters, approximately 52.4 acres of spray irrigation fields, and all
associated piping and appurtenances, and
continued operation of a 89,430 -GPD wastewater treatment facility consisting of an ultrasonic influent flow
measurement device, stair -step -type cascade influent paths to dual clay -lined 2.75 -acre facultative lagoons
with reserve storage capacity, dual manually -cleaned coarse screens, one manually -cleaned fine -mesh screen
for effluent screening, chlorination facilities, a mechanical float -type effluent flow measurement device, dual
400 -GPM effluent irrigation pumps, approximately 14.8 acres of spray irrigation fields, and all associated
piping and appurtenances to serve the Town of Shallotte, with no discharge of wastes to the surface waters,
pursuant to the renewal request received November 30, 1998, and in conformity with the project plan,
specifications, and other supporting data subsequently filed and approved by the Department of Environment
and Natural Resources and considered a part of this permit.
This permit shall be effective from the date of issuance until March 31, 2004, shall void Permit No.
WQ0000798 issued March 14, 1997, and shall be subject to the following specified conditions and limitations:
PERFORMANCE STANDARDS
Upon completion of construction and prior to operation of this permitted facility, a certification
must be received from a professional engineer certifying that the permitted facility has been
installed in accordance with this permit, the approved plans and specifications, and other
supporting materials. If this project is to be completed in phases and partially certified, you shall
retain the responsibility to track further construction approved under the same permit, and shall
provide a final certificate of completion once the entire project has been completed. Mail the
Certification to the Non -Discharge Permitting Unit, P.O. Box 29535, Raleigh, NC 27626-0535.
2. The Wilmington Regional Office, telephone number (910) 395-3900, shall be notified at least
forty-eight (48) hours in advance of operation of the installed facilities so that an in-place
inspection can be made. Such notification to the regional supervisor shall be made during the
normal office hours from 8:00 a.m. until 5:00 p.m. on Monday through Friday, excluding State
Holidays.
3. The spray irrigation facilities shall be effectively maintained and operated at all times so that there
is no discharge to the surface waters, nor any contamination of ground waters which will render
them unsatisfactory for normal use. In the event that the facilities fail to perform satisfactorily,
including the creation of nuisance conditions or failure of the irrigation area to adequately
assimilate the wastewater, the Permittee shall take immediate corrective actions including those
actions that may be required by the Division of Water Quality (Division), such as the construction
of additional or replacement wastewater treatment and disposal facilities.
4. 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.
5. The residuals generated from these treatment facilities must be disposed in accordance with
General Statute 143-215.1 and in a manner approved by the Division.
6. Diversion or bypassing of the untreated wastewater from the treatment facilities is prohibited.
7. The following buffers shall be maintained:
a) 400 feet between wetted area and any residence or places of public assembly under separate
ownership,
b) 150 feet between wetted area and property lines,
c) 100 feet between wetted area and wells,
d) 100 feet between wetted area and drainageways or surface water bodies,
e) 50 feet between wetted area and public right of ways,
f) 100 feet between wastewater treatment units and wells, and
g) 50 feet between wastewater treatment units and property lines.
Some of the buffers specified above may not have been included in previous permits for this waste
treatment and disposal system. These buffers are not intended to prohibit or prevent
modifications, which are required by the Division, to improve performance of the existing
treatment facility. These buffers do, however, apply to modifications of the treatment and disposal
facilities which are for the purpose of increasing the flow that is tributary to the facility. These
buffers do apply to any expansion or modification of the spray irrigation areas and apply in
instances in which the sale of property would cause any of the buffers now complied with, for the
treatment and disposal facilities, to be violated. The applicant is advised that any modifications to
the existing facilities will require a permit modification.
8. The Permittee shall perform spray irrigation activities per the instructions defined within the
operation and maintenance manual provided by the consultant.
H. OPERATION AND MAINTENANCE REQUIREMENTS
The facilities shall be properly maintained and operated at all times.
2
2. Upon classification of the facility by the Water Pollution Control System Operators Certification
Commission (WPCSOCC), the Permittee shall employ a certified wastewater treatment plant
operator to be in responsible charge (ORC) of the wastewater treatment facilities. The operator
must hold a certificate of the type and grade at least equivalent to or greater than the classification
assigned to the wastewater treatment facilities by the WPCSOCC. The Permittee must also
employ a certified back-up operator of the appropriate type and grade to comply with the
conditions of 15A NCAC 8A .0202. The ORC of the facility must visit each Class I facility at
least weekly and each Class Il, III, and IV facility at least daily, excluding weekends and holidays,
and must properly manage and document daily operation and maintenance of the facility and must
comply with all other conditions of 15A NCAC 8A .0202. Once the facility is classified, the
Permittee must submit a letter to the WPCSOCC which designates the operator in responsible
charge within thirty days after the wastewater treatment facilities are 50% complete.
3. A suitable year round vegetative cover shall be maintained on the spray irrigation fields. The
annual nutrient assimilation capacity of the cover crop shall not be exceeded.
4. Irrigation shall not be performed during inclement weather or when the ground is in a condition
that will cause runoff.
5. Adequate measures shall be taken to prevent wastewater runoff from the spray field.
6. 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.
7. Treated wastewater effluent shall be applied only to the following fields and shall not exceed the
maximum annual average irrigation rates indicated:
Irrigation System Connected to the 89,430 -GPD Wastewater Treatment Facility
Field Wetted Area
Maximum Annual Loading Rate
Average Irrigation Rate
acres
inches per year
gallons per day
9 2.0
100.36
14,970
10 5.1
78.00
29,670
11 4.7
78.00
27,340
12 3.0
78.00
17,450
14.8
89,430
Irrigation System Connected to the 179,660 -GPD Wastewater Treatment Facility
Field Wetted Area
Maximum Annual Loading Rate
Average Irrigation Rate
acres
inches per year
gallons per day
I 13.0
44.20
42,858
2 13.0
44.20
42,858
3 10.0
44.20
39,937
4 9.4
44.20
30,897
5 7.0
44.2.0
23,110
52.4
179,660
8. No type of wastewater other than that from the Town of Shallotte
shall be sprayed onto the
irrigation area.
9. No traffic or equipment shall
be allowed on the disposal area except while installation occurs or
while normal maintenance is being performed.
3
10. Public access to the land application sites shall be controlled during active site use. Such controls
may include the posting of signs showing the activities being conducted at each site.
H. Freeboard in the treatment and storage lagoons shall not be less than two feet at any time.
12. Grass cover crops shall be harvested prior to reaching a 12 -inch height.
III. MONITORING AND REPORTING REQUIItEMENTS
1. Any monitoring (including groundwater, surface water, soil or plant tissue analyses) deemed
necessary by the Division to insure surface and ground water protection will be established and an
acceptable sampling reporting schedule shall be followed.
2. Adequate records shall be maintained by the Permittee tracking the amount of wastewater
disposed. These records shall include, but are not necessarily limited to, the following
information:
a. date of irrigation,
b. volume of wastewater irrigated,
c. field irrigated,
d. length of time field is irrigated,
e. continuous weekly, monthly, and year-to-date hydraulic (inches/acre) loadings for each field,
f, weather conditions, and
g. maintenance of cover crops.
3. The effluent from each of the subject facilities shall be monitored by the Permittee at the point
prior to irrigation every month for the following parameters:
BOD5 TSS
Fecal Coliform NH3 as N
TKN NO3 / NO2 as N
PAN by calculation
The effluent from the each of the subject facilities shall be monitored by the Permittee at the point
prior to irrigation every day for the following parameters:
Flow pH
Residual Chlorine
Residual chlorine, fecal coliform, and pH shall be monitored at the point after chlorination. The
effluent from the two lagoon treatment systems shall not be mixed.
4_ Upstream and downstream monitoring shall be performed on a monthly basis for the following:
pH
Fecal Coliform
Total Nitrogen
The upstream monitoring points for the existing spray irrigation facilities shall be located at
accessible points on Stinking Will Branch and Charles Branch and at the intersection of Mulberry
Branch and Forest Drive Extension for the Phase I expansion facilities. Downstream monitoring
points shall be immediately below the confluence of Charles Branch and Stinking Well Branch for
the existing facilities and at the intersection of Mulberry Branch and SR 1348 for the Phase I
expansion facilities.
4
N.
Three (3) copies of all operation and disposal records (as specified in Condition I11 2) on Form
NDAR-1 shall be submitted on or before the last day of the following month. Three (3) copies of
all effluent monitoring data (as specified in Condition 11I 3) on Form NDMR-1 shall be submitted
on or before the last day of the following month. All information shall be submitted to the
following address:
NC Division of Water Quality
Water Quality Section
Non -Discharge Compliance/Enforcement Unit
Post Office Box 29535
Raleigh, North Carolina 27626-0535
A representative annual soils analysis (Standard Soil Fertility Analysis) shall be conducted on
each spray field and the results maintained on file by the Permittee for a minimum of five years.
The Standard Soil Fertility Analysis shall include, but is not necessarily limited to, the following
parameters:
Acidity
Calcium
Copper
Magnesium
Cation Exchange Capacity
Noncompliance Notification:
Manganese Potassium
Percent Humic Matter Sodium
.pH Zinc
Phosphorus
Base Saturation (by calculation)
The Permittee shall report by telephone to the Wilmington Regional Office, telephone number
(910) 395-3900, as soon as possible, but in no case more than 24 hours or oil 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 sludge digester; 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.
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.
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 five (5) 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 recur.
GROUNDWATER REQUIREMENTS
Within 30 days of permit issuance, existing monitor well MW -3 shall have its access restricted by
placing a water tight cap or seal compatible with casing and installed so that it cannot be removed
easily by hand.
2. Within sixty (60) days of completion of all monitoring wells, the permittee shall submit two
original copies of a scaled topographic map (scale no greater than 1 ":100') signed and sealed by a
professional engineer or a state licensed land surveyor that indicates all of the following
information:
(a) the location and identity of each monitoring well,
(b) the location of all components of the waste disposal system,
(c) the location of all property boundaries,
(d) the latitude and longitude of the established horizontal control monument,
(e) the relative elevation of the top of the well casing (which shall be known as the "measuring
point"), and
(f) the depth of water below the measuring point at the time the measuring point is established.
The survey shall be conducted using approved practices outlined in North Carolina General
Statutes Chapter 89C and the North Carolina Administrative Code Title 21, Chapter 56. The
surveyor shall establish a horizontal control monument on the property of the waste disposal
system and determine the latitude and longitude of this horizontal control monument to a
horizontal positional accuracy of +/- 10 feet. All other features listed in a. through e. above shall
be surveyed relative to this horizontal control monument. The positional accuracy of features
listed in a. through e. above shall have a ratio of precision not to exceed an error of closure of I
foot per 10,000 feet of perimeter of the survey. Any features located by the radial method will be
located from a minimum of two points. Horizontal control monument shall be installed in such a
manner and made of such materials that the monument will not be destroyed due to activities that
may take place on the property. The map shall also be surveyed using the North American Datum
of 1983 coordinate system and shall indicate the datum on the map. All bearings or azimuths shall
be based on either the true or NAD 83 grid meridian. If a Global Positioning System (GPS) is
used to determine the latitude and longitude of the horizontal control monument, a GPS receiver
that has the capability to perform differential GPS shall be used and all data collected by the GPS
receiver will be differentially corrected.
The maps and any supporting documentation shall be sent to the Permits and Compliance Unit,
Groundwater Section, P.O. Box 29578, Raleigh, NC, 27626-0578.
Monitor wells MW -6, MW -7, MW -8, MW -9, MW -10, MW -11, MW -12, MW -13, and MW -14,
depicted on Attachment A, shall be sampled initially after construction and thereafter every
March, July, and November for the following parameters:
Water Level pH
Chloride Total Dissolved Solids (TDS)
Fecal Coliforms Total Organic Carbon (TOC)
Nitrate (NO3) Total Ammonia
Volatile Organic Compounds - In November only using one of the following:
(A) Standard Method 6230D, PQL at 0.5 gg/L or less
(B) Standard Method 621 OD, PQL at 0.5 gg/L or less
(C) EPA Method 8021, Low Concentration, PQL at 0.5 gg/L or less
(D) EPA Method 8260, Low Concentration, PQL at 0.5 gg/L or less
(E) Another method with prior approval by the Groundwater Section Chief
Any method used must meet the following qualifications:
(1) A laboratory must be DWQ certified to run any method used.
(2) The method used must, at a minimum, include all the constituents listed in Table VIII of
Standard Method 6230D.
(3) The method used must provided a PQL at 0.5 gg/L or less which must be supported by
laboratory proficiency studies as required by the DWQ Laboratory Certification Unit.
P
Any constituents detected above the MDL but below the PQL at 0.5 µg/L must be
qualified (estimated) and reported.
4. If any volatile organic compounds are detected by the methods listed, then the Wilmington
Regional Office Groundwater Supervisor, telephone number (910) 395-3900, must be contacted
immediately for further instructions regarding any additional follow-up analyses required. The
results of all initial and follow-up analyses must be submitted simultaneously.
5. The measurement of water levels must be made prior to sampling for the remaining parameters.
The depth to water in each well shall be measured from the surveyed point on the top of the
casing.
The measuring points (top of well casing) of all monitoring wells shall be surveyed to provide the
relative elevation of the measuring point for each monitoring well.
6. 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 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 TOC concentration in the
downgradient wells shall be subject to the additional sampling and analysis as described above.
7. The results of the sampling and analysis must be received on Form GW -59 (Groundwater Quality
Monitoring: Compliance Report Form) by the Groundwater Section, Permits and Compliance
Unit, P.O. Box 29578 Raleigh, N.C. 27626-0578 on or before the last working day of the month
following the sampling month.
8. The COMPLIANCE BOUNDARY for the disposal system is specified by regulations in 15A
NCAC 2L, Groundwater Classifications and Standards. The Compliance Boundary is for the
disposal system constructed after December 31, 1983 is established at either (1) 250 feet from the
waste disposal area, or (2) 50 feet within the property boundary, whichever is closest to the waste
disposal area. An exceedance of Groundwater Quality Standards at or beyond the Compliance
Boundary is subject to immediate remediation action in addition to the penalty provisions
applicable under General Statute 143-215.6A(a)(1).
In accordance with 15A NCAC 2L, a REVIEW BOUNDARY is established around the disposal
systems midway between the Compliance Boundary and the perimeter of the waste disposal area.
Any exceedance of standards at the Review Boundary shall require remediation action on the part
of the permittee.
Any additional groundwater quality monitoring, as deemed necessary by the Division, shall be
provided.
V. INSPECTIONS
Adequate inspection, maintenance, and cleaning shall be provided by the Permittee to insure
proper operation of the subject facilities.
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 or other permitting
authority.
Any duly authorized officer, employee, or representative of the Division may, upon presentation
of credentials, enter and inspect any property, premises or place on or related to the disposal site
or facility at any reasonable time for the purpose of determining compliance with this permit; may
inspect or copy any records that must be maintained under the terms and conditions of this permit,
and may obtain samples of groundwater, surface water, or leachate.
VI. GENERAL CONDITIONS
1. This permit shall become voidable unless the facilities are constructed in accordance with the
conditions of this permit, the approved plans and 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. This permit is not transferable. In the event there is a 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 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. Failure to abide by the conditions and limitations contained in this permit may subject the
Permittee to an enforcement action by the Division in accordance with North Carolina General
Statute 143-215.6A to 143-215.6C.
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.
A set of approved plans and specifications for the subject project must be retained by the Permittee
for the life of the project.
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 15A NCAC 2H.0205 (c) (4).
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.
Permit issued this the taventy-first day of April, 1999
NO7HCLINANV O AL MANAGEMENT COMMISSION
f - Kerr T. Stevens, Director
Division of Water Quality
By Authority of the Environmental Management Commission
Permit Number WQ0000798
Permit No. WQ0000798
April 21, 1999
ENGINEER'S CERTIFICATION
Partial Final
1, , as a duly registered Professional Engineer in the State of North
Carolina, having been authorized to observe (periodically, weekly, full time) the construction of the project,
a
Project Name Location and County
for the Permittee hereby state that, to the best of my abilities, due care and diligence was used in the observation of
the construction such that the construction was observed to be built within substantial compliance and intent of this
permit, the approved plans and specifications, and other supporting materials.
Signature
Date
H
Registration No.
MONITORING POINT
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TOWN OF SSALLOTTE
PERMIT NO. 00000798
BRQNSWICK COUNTYI
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