WQ0003090_Final Permit_19910325

State of North Carolina
Department of Environment, Health and Natural Resources
Division of Environmental Management
512 North Salisbury Street • Raleigh, North Carolina 27611
.lames G. Martin, Governor
William W. Cobey, Jr., Secretary
Mr. Mike Tardif, Town Manager
Town of Liberty
Post Office Box 1006
Liberty, North Carolina 27298
Dear Mr. Tardif:
George T. Everett, Ph.D.
Director
March 25, 1991
Subject: Permit No. WQ0003090-Amendment
Town of Liberty
Wastewater Treatment and Spray
Irrigation Disposal Facility
Randolph County
In accordance with your application received May 15, 1990 and the letter of request for
amendment received October 23, 1990, we are forwarding herewith Permit No. WQ0003090, as
amended, dated March 25, 1991, to the Town of Liberty for the continued operation of the subject
wastewater treatment and spray irrigation disposal facility. This amendment includes a reduction in
effluent monitoring contained in condition number III, 3 from twice per month to three (3) times
per year in accordance with your request.
This permit shall be effective from the date of issuance until August 31, 1995, shall hereby
void Permit No. WQ0003090 issued September 17, 1990, 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 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 Ms. Carolyn
McCaskill or Mr. Mark Hawes at 919/ 733-50,9
cc:
Randolph County Health Departmei
Winston-Salem Regional Office v
Groundwater Section
Training and Certification (no new rating)
Pollution Prevention Pays
P.O. Box 27687, Raleigh, North Carolina 27611-7687 Telephone [phone]
An Equal Opportunity Affirmative Action Employer

NORTH CAROLINA
ENVIRONMENTAL MANAGEMENT COMMISSION
DEPARTMENT OF ENVIRONMENT, HEALTH 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
Town of Liberty
Randolph County
W6 swryiA
continued operation of a 0.55 MOD wastewater treatment and spray irrigation disposal facility
consisting of a bar screen, a parshall flume, an influent lift station with three (3) 815 gpm pumps,
approximately 1,000 linear feet of 10 inch force main, a 15 acre stabilization storage/lagoon with
88 days of storage at the design flow of 0.55 MOD and a natural clay liner with a permeability of
lx10-15 cm/sec or less, chlorination facilities, dual 1,830 gpm vertical diffusion vane irrigation
pumps with approximately 3,460 linear feet of 8 inch force main, a solid set irrigation system with
a wetted area of 150 acres, an operations building, and all the associated piping, valves, and
appurtenances to serve the Town of Liberty with no discharge of wastes to the surface waters,
pursuant to the application received May 15, 1990, the request for amendment received October
23, 1990 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 August 31, 1995, shall hereby
void Permit No. WQ0003090 issued September 17, 1990, and shall be subject to the following
specified conditions and limitations:
I. PERFORMANCE STANDARDS
1. 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 absorb the wastewater, the Permittee shall take such
immediate corrective action to correct the problem, including actions as may be required
by the Division of Environmental Management.
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. The sludge generated from these treatment facilities must be disposed of in accordance
with General Statute 143-215.1 and in a manner approved by the North Carolina
Division of Environmental Management.

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 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,
g) 50 feet between wastewater treatment units and property lines.
II. OPERATION AND MAINTENANCE REQUIREMENTS
1. The facilities shall be properly maintained and operated at all times.
2. The Per riittee 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. A suitable vegetative cover shall be maintained.
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. The application rate shall not exceed: a) 0.21 inches per acre per hour;
b) a maximum of 1.0 inch per acre per week.
8. No type of wastewater other than that from the Town of Liberty 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.
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.
11. Freeboard in the lagoon shall not be less than 1.5 feet at any time.
III. MONITORING AND REPQRTING REQUIREMENTS
1. Any monitoring (including groundwater, surface water, soil or plant tissue
analyses) 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 shall be maintained by the Perznittee 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,
for each field,
f) weather conditions, and
g) maintenance of cover crops.
and year-to-date hydraulic (inches/acre) loadings
3. The effluent from the subject facilities shall be monitored by the Permittee at the point
prior to irrigation as indicated for the following parameters:
Every March, July, and November (if irrigation occurs during the calendar months)
BOD5 TS S
Fecal Coliform pH
NH3 as N
Annually
NO3
B
Total Nitrogen
P
Cu
Na
Ni
Mg
Zn
Ca
Pb
S 04
Cl
K
Cd
Cr
Hg
As
Conductivity
PAN
Sodium Adsorption Ratio (SAR) by Calculations
If the SAR exceeds 10, remediation of the spray irrigation fields should be initiated
using a soil conditioner such as gypsum, dolzrietic lime, or a magnesium salt.
4. A representative annual soils analysis (Standard Soil Fertility Analysis) shall be
conducted of each site receiving wastewater in the respective calendar year and the
results maintained on file by the Pennittee for a minimum of five years. The Standard
Soil Fertility Analysis shall include but is not necessarily limited to the following
parameters:
% Base Saturation
Phosphorus
Potassium
Nickel
Lead
Zinc
Calcium
Manganese
Cation Exchange Capacity
Sodium
Magnesium
Cadmium
Copper
PH
5. Three copies of all operation and disposal records (as specified in condition 111 2) and
all effluent monitoring data (as specified in condition 1113) and any other data as may be
required shall be submitted on or before the last day of the following month to the
following address:
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NC Division of Environmental Management
Water Quality Section
Facility Assessment unit
PO Box 27687
Raleigh, NC 27611-7687
6. Noncompliance Notification:
The Permittee shall report by telephone to the Winston-Salem Regional Office,
telephone no. [phone], 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.
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.
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
recur.
IV. GROUNDWATER REQUIREMENTS
The four (4) existing monitor wells must be sampled every March, July, and
November for the following parameters:
NO3 (10.0) TDS (500.0)
TOC pH ( 6.5-8.5 standard units)
Ammonia Nitrogen Chlorides (250.0)
Water Level Total Coliforms (1/100 ml)
SO4 (250.0)
Volatile Organic Compounds - In November only (by Method I or Method
2 below)
Method 1: Method 6230D ( Capillary - CoIumn), "Standard Methods for
the Examination of Water and Wastewater", 17th edition, 1989
Method 2: Method 502.2 " Methods for the Determination of Organic
Compounds in Drinking Water", United States Environmental
Protection Agency - 600/4-88/039
The measurement of water level must be made prior to sampling for the remaining
parameters.
0

The measuring points (top of well casing) of all monitoring wells shall be
surveyed relative to mean sea level (M.S.L.). The depth of the water in each well
shall be measured from the surveyed point on the top of the casing. The water level
elevations shall then be determined relative to (M.S.L_).
The numbers in parentheses represent the maximum allowable concentrations in
groundwater for the various analytical parameters, as specified in 15 NCAC 2L
[Groundwater Classifications and Standards]. Unless otherwise noted, the
concentrations are given in parts per trillion.
If TOC concentrations greater than 10 mg/l 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.
If any volatile organic compounds are detected by method 6230D, or the equivalent
method 502.2, then EPA methods 604 and 611 must also be run to detect other
organic compounds which may be present. The results of all analysis specified in
the monitoring requirements, including 604 and 611 if required, must be submitted
simultaneously
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.
2. The Compliance Boundary 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 Permittee, which is
within or contiguous to the disposal system site may alter location of the Compliance
Boundary.
For facilities permitted on or after December 30, 1983, the Compliance Boundary is
established at the lesser of 250 feet from the lagoon and spray 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 perrnittee 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.
5

3. Any additional groundwater quality monitoring, as deemed necessary by the
Division, shall be provided.
4. The lagoon shall have a liner of natural material at least one (1) foot in thickness at all
locations with a hydraulic conductivity of no greater than 1 x 10-6 centimeters per
second when compacted.
5. NQland application of wastewater activities shall take place in any spray zones when
a seasonal high water table is less than three feet below the land surface.
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 Iead to the release of wastes to the environment, a threat to human health,
or a nuisance. The Pennittee 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 Perrittee. 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.
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.
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 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. 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.
R

5. 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.
6. Prior to any transfer of this land, a notice shall be given to the new owner that gives mull
details of the materials applied at this site.
7. A set of approved plans and specifications for the subject project must be retained by the
Permittee for the Iife of the project.
8. The annual administering and compliance fee must be paid by the Permittee within thirty
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)
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.
Permit iss is ionl-
25th day of March, 1991
N CAR LINA
E NGeorge T. Ever tt, Direc
Division of En nmen Wag
By Authority of th ronment,
Permit No. WQ0003090 Amendment
AL MANAGEMENT COMMISSION
Management Commission
7