WQ0003090_Final Permit_19930710

State of North Carolina?FA
Department of Environment,
Health and Natural ResourcesA• Aa
Division of Environmental Management
James 8. Hunt, Jr., Governor C
Jonathan B. Howes, Secretary ID H N R
A. Preston Howard, Jr., P.E., Director
July 10, 1993
Mr. Mike Tardiff, Town Manager
Town of Liberty
PO Box 1006
Liberty, NC 27298
Dear Mr. Tardiff
Subject: Permit No. WQ0003090
Town of Liberty
Wastewater Spray Irrigation
Randolph County
• In accordance with your application received December 28, 1992, we are forwarding herewith
Permit No. WQ0003090, dated July 10, 1993, to the Town of Liberty for the continued operation of the
subject wastewater spray irrigation facilities. The Town of Liberty has requested that the annual soils
analysis for nickel, lead, and cadmium be reduced to once upon permit renewal and that the wastewater
loading rate on the spray irrigation field(s) be increased.
The Division hereby approves the request to reduce metals analysis to once upon permit renewal
based upon a review of the information on the pretreatment program and metal analysis conducted at the
site. Please note condition number III, 4.
The Division has continuing concerns associated with the adequacy of the fields to handle an
increased loading rate based upon a review of the records recently submitted from the regional office and a
review of the soil information (both present and past) that was submitted to verify the fields adequacy to
accept additional loading. The problems associated with these fields may be remedied with the minor
modifications that consist of filling the depressions around the spray heads with soil and planting of a
water tolerant grass, and the erosion channels filled and planted with grass. The Division understands that
the Town is proceeding to try and correct the problems associated with the spray irrigation fields and have
changed the spray irrigation data sheet which is to be submitted to the Division in the future to reflect
accurate hydraulic loadings on the spray fields.
During a site evaluation, well numbers 3 and 4 had been found to be improperly constructed and it
is the Division's understanding that these wells were replaced in March, 1993. Each of the four (4) wells
on site showed exceedances of parameters in violation of groundwater standards. Since two new wells
have been constructed to replace well numbers 3 and 4, the Town has agreed to formulate a plan to address
the presence of contaminants in the monitoring well data. Once this is done, the impact to groundwater
can be evaluated and data associated with the operation of this spray irrigation system can be assessed.
The Division will need to review the results generated from sampling of these wells and submitted as a
result of this new construction. Several sampling events will need to be submitted and reviewed which
will necessitate additionally time on the part of the Town therefore, this permit action is being taken at this
time.
PA. Box 29535, Raleigh, North Carolina 27626-0535 Telephone [phone] FAX [phone]
An Equal Opportunity Affirmative Action Employer W% recycled/ 10% post -consumer paper

Until this facility is operated once the proposed modifications are complete and records on the
sampling of the newly constructed monitoring wells and the irrigation rates submitted for a length of time
to determine the fields' adequacy, the Division cannot approve a request to increase the loading rate.
This permit shall be effective from the date of issuance until August 31, 1995, shall hereby void
Permit No. WQ0003090 issued March 25, 1991, 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. 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, please contact Ms. Carolyn McCaskill at
919/ 733-5083.
Since ly,
A. Preston H d. Jr.. P.
cc: Randolph County Health Department
Winston-Salem Regional Office, Water Quality
Winston-Salem Regional Office, Groundwater
Groundwater Section, Jack Floyd
Training and Certification Unit
Black & Veatch
Facilities Assessment Unit

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
FOR THE
continued operation of a 0.55 MGD 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 MGD and a natural clay liner with a permeability of 1 x 10`6 cm/sec or less,
chlorination facilities, dual 1830 gpm vertical diffusion vane irrigation pumps with approximately 3460
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 December 28, 1992, 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 March 25, 1991, and shall be subject to the following specified conditions
and limitations:
i' .211' 1
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 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 j 100 feet between wastewater treatment units and wells, and
g) 50 feet between wastewater treatment units and property lines.
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1. The facilities shall be properly maintained and operated at all times.
2. Upon classification of the facility by the Certification Commission, 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 Certification Commission. The Permittee must also employ a
certified back-up operator of the appropriate type and grade to comply with the conditions
of Title 15A, Chapter 8A, .0202. The ORC of the facility must visit each Class I facility at
least weekly and each Class II, 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 Title 15A, Chapter 8A, .0202.
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.
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11. Freeboard in the lagoon shall not be less than 1.5 feet at any time.
uI► II "I FkTW.Wl1 01 OR 0 lats! Iu PAIN
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 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 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)
BODS TSS
Fecal Coliform pH
NH3 as N
Annually
NO3
B
Total Nitrogen
P
Cu
Na
Ni
Mg
Zn
Ca
Pb
SO4
C1
K
Cd
Cr
Hg
As
Conductivity
PAN
Sodium Adsorption Ratio by Calculation)
1 If the SAR exceeds 10, remediation of the spray irrigation fields should be initiated
using a soil conditioner such as gypsum, dolmetic 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 Permittee for a minimum of five years. The Standard Soil Fertility Analysis
shall include, but is not necessarily limited to, the following parameters:
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% Base Saturation
Manganese
Phosphorus
Cation Exchange Capacity
Potassium
Sodium
Nickell
Magnesium
Lead l
Cadmium l
Zinc
Copper
Calcium
pH
lSoils analysis for these parameters shall be conducted once prior to permit renewal on
soils from each site which has received wastwater during the permit cycle.
5. Three copies of all operation and disposal records (as specified in condition III 2), all
effluent monitoring data (as specified in condition III 3), and all soils analyses (as specified
in condition III 4), 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:
NC Division of Environmental Management
Water Quality Section
Facility Assessment Unit
PO Box 29535
Raleigh, NC 27626-0535
6. Noncompliance Notification:
The Permittee shall report by telephone to the Winston-Salem Regional Office, telephone
number 919/896-7007, 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 renders 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; or
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.
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The four (4) existing monitor wells shall be sampled every March, July, and November for
the following parameters:
NO3 Ammonia Nitrogen
TDS TOC
pH Water Level
Chloride Total Coliforms
SO4
Volatile Organic Compounds - In November only (by Method 1 or Method 2
below)
Method 1: Method 6230D (Capillary - Column), "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.
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 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.
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.
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 analyses 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 15A
NCAC 2L, Groundwater Classifications and Standards. An exceedance of Groundwater
Quality Standards beyond the Compliance Boundary is subject to penalty provisions
applicable under General Statute 143-215.6 (1)a.
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.
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Any sale or transfer of property which affects the location of the compliance boundary shall
be reported immediately to the Director. The permittee shall not transfer land within an
established compliance boundary unless the permittee has satisfied all the requirements of
15A NCAC 2L .107 (e and f).
The REVIEW BOUNDARY for the disposal system is specified by regulations in 15A
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 tiLhfr (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; 2r
(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.
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. No land application of waste activities shall be undertaken when the seasonal high water
table is less than three (3) feet below 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 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 pemnitting 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.
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, specifications, and other supporting data.
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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 143-215.6A to 143-215.6C.
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 full
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 life of the project.
8. 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).
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 issued this the 10th day of July, 1993
CAROLINA ENVIRONMENTAL MANAGEMENT COMMISSION
A. Preston Howar , Jr., PrE., D ec or
Division of Envi ental Man a nt
By Authority of the anagement Commission
Permit Number WQ0003090 Amendment
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