WQ0014046_Final Permit_20070102

0F w A TEo
Michael F. Easley, Governor
William G. Ross Jr., Secretary
North Carolina Department of Environment and Natural Resources
January 2, 2007
JANET C. PARROT, MAYOR
TOWN OF STOVALL
P.O. BOX 100
STOVALL, NORTH CAROLINA, 27582
Dear Mayor Parrott:
Alan W. Klimek, P.E. Director
Division of Water Quality
Subject: Permit No. WQ0014046
Town of Stovall
Wastewater Surface Irrigation
Granville County
In accordance with your renewal request received October 27, 2006, we are forwarding herewith
Permit No. WQ0014046, dated January 2, 2007, to the Town of Stovall for the continued operation of the
subject wastewater treatment and surface irrigation facilities.
This permit shall be effective from the date of issuance until December 31, 2011, shall void
Permit No. WQ0014046 issued June 14, 2002, 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, 6714 Mail Service
Center, Raleigh, NC 27699-6714. Unless such demands are made this permit shall be final and binding.
If you need additional information concerning this matter, please contact Lori Veal at (919) 715-
6187 or [e-mail].
Since e f'
Ian W. Klimek, P.E.
cc: Granville County Health Department
Raleigh Regional Office, Aquifer Protection Section
APS Central Files
LAU Files
No ` Carolina
Ntura!!y
Aquifer Protection Section 1636 Mail Service Center Raleigh, NC 27699-1636 Phone [phone] Customer Service
Internet: h2o.ennstate.nc.us 2728 Capital Boulevard Raleigh, NC 27604 FAX (919) 7I5-6048 1-877-623-6748
An Equal Opportunity/Afnnalive Action Employer— 50% Recycled110% Post Consumer Paper

NORTH CAROLINA
ENVIRONMENTAL MANAGEMENT COMMISSION
DEPARTMENT OF ENVIRONMENT AND NATURAL RESOURCES
RALEIGH
SURFACE 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
Town of Stovall
Granville County
FOR THE
continued operation of a 69,000 gallon per day (GPD) surface irrigation treatment and disposal facility
consisting of an operations/lab building, with a septic tank and S.T.E.P. system, and influent flow meter, a
2,530,000-gallon facultative lagoon (36.7 days of treatment), a 5,370,000-gallon storage lagoon
(approximately 76.8 days of storage), an effluent structure with a 2.4 GPH sodium hypochlorite feed
pump, a 340 GPM irrigation pump station with dual pumps, high-water alarms, approximately 32.71
acres of spray irrigation fields (divided into 8 irrigation zones) to serve the Town of Stovall, including
Stovall Elementary School, with no discharge of wastes to the surface waters, pursuant to the application
received October 27, 2006, 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 December 31, 2011, shall void Permit
No. WQ0014046 issued June 14, 2002, and shall be subject to the following specified conditions and
limitations:
L PERFORMANCE STANDARDS
The surface 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, such as the construction of additional or replacement
wastewater treatment and disposal facilities.
2. The issuance of this permit shall not relieve the Permittee of the responsibility for damages to surface
or ground water resulting from the operation of this facility.
3. 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.
4. Diversion or bypassing of the untreated wastewater from the treatment facilities is prohibited.

5. 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 drainage ways or surface water bodies,
e) 50 feet between wetted area and public right of ways,
f) 100 feet between treatment/storage units and any wells, and
g) 50 feet between treatment units and property lines.
II. OPERATION AND MAINTENANCE REQUIREMENTS
1. The facilities shall be properly maintained and operated at all times
2. Upon classification of the wastewater treatment and irrigation facilities by the Water Pollution
Control System Operators Certification Commission (WPCSOCC), the Permittee shall designate and
employ a certified operator to be in responsible charge (ORC) and one or more certified operator(s) to
be back-up ORC(s) of the facilities in accordance with 15A NCAC 8G .0201. The ORC shall visit
the facilities in accordance with 15A NCAC 8G .0204 or as specified in this permit and shall comply
with all other conditions specified in these rules.
3. A 2-ft minimum freeboard shall be maintained below the top of the lagoon dikes.
4. A suitable year round vegetative cover shall be maintained.
5. An agronomic plan shall be developed, which maximizes the assimilative capacity of the nutrients in
the wastewater through crop growth, crop harvesting, etc.
6. irrigation shall not be performed during inclement weather or when the ground is in a condition that
will cause runoff.
7. Adequate measures shall be taken to prevent wastewater runoff from the irrigation field.
S. The annual application rate shall not exceed a cumulative loading of 28.3 inches over any 12-month
period at an instantaneous loading rate not to exceed 0.25 inches/hour.
9. 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.
10. No type of wastewater other than that from the town of Stovall including Stovall Elementary School
shall be irrigated onto the irrigation area.
11. No traffic or equipment shall be allowed on the disposal area except while installation occurs or while
normal maintenance is being performed.
12. 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.
III. MONITORING AND REPORTING REQUIREMENTS
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

2. Influent flow shall be continuously monitored and daily flow values shall be reported on Form
NDMR.
The Permittee shall install an appropriate flow measurement device consistent with approved
engineering and scientific practices to ensure the accuracy and reliability of influent flow
measurement. Flow measurement devices selected shall be capable of measuring flows with a
maximum deviation of less than 10 percent from true flow, accurately calibrated at a minimum of
once per year, and maintained to ensure that the accuracy of the measurements is consistent with the
accepted capability of that type of device. The Permittee shall keep records of flow measurement
device calibration on file for a period of at least three years. At a minimum, data to be included in
this documentation shall be:
a. Date of flow measurement device calibration
b. Name of person performing calibration
c. Percent from true flow
3. 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,
g. Maintenance of cover crops.

4. The effluent from the subject facilities shall be monitored by the Permittee at a point prior to
irrigation every March, July, and November for the following parameters:
NH3 as N
NO3 as N
Fecal Coliform
BOD5
TKN
Chloride
TSS
Sodium
Magnesium
PH
Calcium
Sodium. Adsorption Ratio by Calculation
5. Three (3) copies of all monitoring data [as specified in Conditions 1II(2) and HI(4)] on Form NDMR-
1 and three (3) copies of all operation and disposal records [as specified in Condition I1I(3)] on Form
NDAR-1 shall be submitted on or before the last day of the following month. All information shall
be submitted to the following address:
Division of Water Quality
Information Processing Unit
1617 Mail Service Center
Raleigh, North Carolina 27699-1617
6. An annual representative soils analysis (Standard Soil Fertility Analysis) shall be conducted on each
irrigation 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
Manganese
Potassium
Calcium
Percent Humic Matter
Sodium
Copper
PH
Zinc
Magnesium
Base Saturation y calculation)
Phosphorus
Cation Exchange Capacity
Exchangeable Sodium Percentage
7. A record shall be maintained of all residuals removed from this facility. The record shall include the
name of the hauler, the permit authorizing disposal, a letter from a municipality agreeing to accept the
residuals, the date the residuals were hauled, and the volume of residuals removed.
8. A maintenance log shall be maintained at this facility including, but not limited to, the following
items:
a. Everyday that wastewater is land applied via spray irrigation, the following results shall be
recorded:
pH,
Residual Chlorine,
Setteable matter,
Volume of wastewater irrigated per field as recorded by the effluent flowmeter.
b. Visual observations of the plant and plant site,
c. Record of preventative maintenance, and
d. Date calibration of flow measuring device.
9. Noncompliance Notification:
The Permittee shall report by telephone to the Raleigh Regional Office, telephone number (919) 791-
4200, 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 sludge digester; the known passage of a slug of hazardous substance through the
facility; or any other unusual circumstances.
4

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.
d. Any time that self -monitoring information indicates that the facility has gone out of compliance
with its permit limitations.
Occurrences outside normal business hours may also be reported to the Division's Emergency
Response personnel at telephone number [phone], [phone], or [phone].
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.
IV. GROUNDWATER RE UIREMENTS
Sampling Criteria:
1. Existing monitoring wells MW-1, MW-2, MW-3, and MW-4 as shown on the plans shall be sampled
initially after construction and prior to waste disposal operations, and thereafter, every March, July,
and November for the parameters listed below:
Nitrate (NO3-N)
Water Level*
Fecal Coliform
Total Dissolved Solids (TDS)
Chloride
pH
Total Ammonia Nitrogen (NH3-N)
Total Organic Carbon)
Volatile Organic Compounds (Sampled in November Only)
*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 top of the casing. The
measuring points (top of well casing) of all monitoring wells shall be surveyed relative to a common
datum.
For Total Organic Carbon (TOC), if concentrations greater than 10 mg/l are detected in any down -
gradient 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 monitoring well exceeds 10 mg/1, this concentration will be taken to represent the
naturally occurring TOC concentration. Any exceedance of this naturally occurring TOC
concentration in the down -gradient wells shall be subject to the additional sampling and analysis as
described above.
For Volatile Organic Compounds (VOCs) samples in November, use only one of the following
methods:
a. Standard Method 6230D, Practical Quantitation Limit (PQL) at 0.5 ug/L or less
b. Standard Method 6210, PQL at 0.5 ug/L or less
c. EPA Method 8021, Low Concentration, PQL at 0.5 ug/L or less
d. EPA Method 8260, Low Concentration, PQL at 0.5 ug/L or less
e. Another method with prior approval by the Groundwater Section Chief.

Any of the referenced methods used for VOCs must, at a minimum, include all the constituents listed
in Table VIII of Standard Method 6230D. Any method used must provide a PQL of 0.5 ug/L or less,
which must be supported by laboratory proficiency studies as required by the DWQ Laboratory
Certification Unit. Any constituents detected above the Method Detection Limit (MDL) but below
the PQL of 0.5 ug/L must be qualified (estimated) and reported.
Any laboratory selected to analyze parameters must be Division of Water Quality (DWQ) certified
for those parameters required.
Rep orting/Do cumentation :
2. All reports and documentation (GW-59) shall be mailed to the following address:
NC Division of Water Quality
Information Processing Unit
1617 Mail Service Center
Raleigh, NC 27699-1617
Updated blank forms (GW-59) may be downloaded from hn://h2o.enr.state.nc.us/aps/gpu/forms.htm
or requested from the address mentioned above.
The results of the sampling and analysis must be received on Form GW-59 (Groundwater Quality
Monitoring: Compliance Report Form) by the Aquifer Protection Section (address listed in the
"Reporting / Documentation" section of the Groundwater Requirements), on or before the last
working day of the month following the sampling month. The data of all groundwater sampling
analyses required by the permit conditions must be reported using the most recent GW-59 form along
with attached copies of the laboratory analyses.
4. Within sixty (60) days of permit issuance, the permittee shall submit two original copies of a scaled
site map (scale no greater than l =100'); however, special provisions may be granted upon prior
approval for large properties. The map(s) must include the following information:
a. The location and identity of each monitoring well.
b. The location of major components of the waste disposal system.
c. The location of property boundaries within 500 feet of the disposal area(s).
d. The latitude and longitude of the established horizontal control monument.
e. The elevation of the top of the well casing (which shall be known as the "measuring
point") relative to a common datum.
f. The depth of water below the measuring point at the time the measuring point is
established.
g. The location of Review and Compliance boundaries.
h. The date the map is prepared and/or revised.
Control monuments 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. Maps
and any supporting documentation shall be sent to the Aquifer Protection Section as
addressed in the "Reporting / Documentation" above.
The permittee is responsible for the geographic accuracy of any reap submitted, however
produced.
0

Liner Requirements:
5. The lagoon shall have either a liner of natural material at least one (1) foot in thickness and having a
hydraulic conductivity of no greater than 1 X 10-6 centimeters per second when compacted, or a
synthetic liner of sufficient thickness to exhibit structural integrity and an effective hydraulic
conductivity no greater than that of the natural material liner, according to 15A NCAC 2T .0505(f).
Applicable Boundaries:
6. The COMPLIANCE BOUNDARY for the disposal system is specified by regulations in 15A NCAC
2L, Groundwater Classifications and Standards. The Compliance Boundary for the disposal system
individually permitted prior to December 31, 1983, is established at either 500 feet from the waste
disposal area, or at 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 according to 15A NCAC 2L .0106(d)(2).
7. The COMPLIANCE BOUNDARY for the disposal system is specified by regulations in 15A NCAC
2L, Groundwater Classifications and Standards. The Compliance Boundary for the disposal system
individually permitted after to December 31, 1983, is established at either 250 feet from the waste
disposal area, or 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 according to 15A NCAC 2L .0106(d)(2).
The REVIEW BOUNDARY is established around the disposal system midway between the
Compliance Boundary and the perimeter of the waste disposal area. Any exceedance of standards at
the Review Boundary shall require action in accordance with 15A NCAC 2L .0106(d)(1).
Additional Requirements:
9. Any groundwater quality monitoring, as deemed necessary by the Division, shall be provided.
V. INSPECTIONS
1. Adequate inspection, maintenance, and cleaning shall be provided by the Permittee to insure proper
operation of the subject facilities.
The Perrnittee 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 Permittec 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.
7

VI. GENERAL CONDITIONS
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.
5. The issuance of this permit does not exempt 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, including but not limited to applicable river buffer rules in 15A
NCAC 2B .0200, erosion and sedimentation control requirements in 15A NCAC Chapter 4 and under
the Division's General Permit NCG010000, and any requirements pertaining to wetlands under 15A
NCAC 2B .0200 and 2H .0500.
6. The Permittee shall retain a set of approved plans and specifications for the life of the project.
7. The Permittee must pay the annual administering and compliance fee 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 2T .0105(e)(3).
8. 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 2nd day of January, 2007
NORTH
9�
AL MANAGEMENT COMMISSION
flan W. Klimek, P.E., Director
Division of Water Quality
By Authority of the Environmental Management Commission
Permit Number WQ0014046