WQ0004759_Final Permit_19910930

State of North Carolina
Department of Environment, Health and Natural Resources
Division of Environmental Management
512 North Salisbury Street • Raleigh, North Carolina 27626-0535
James G. Martin, Governor George T. Everett, Ph.D.
William W. Cobey, Jr., Secretary Director
September 30, 1991
Mr. Gary L. McConkey, Town Manager
Town of Knightdale
Post Office Box 640
Knightdale, NC 27545
Subject: Permit No. WQ0004759
Modification
Town of Knightdale
Sludge Lagoon Closure
Wake County
Dear Mr. McConkey:
In accordance with your application for modification received July 18, 1991, we are
forwarding herewith Permit No. WQ0004759, dated September 30, 1991, to the Town of
Knightdale for the operation of a sludge lagoon closure program. This modification will allow all
the sludge retrieved from the two lagoons at the Town of Knightdale's closed Wastewater
Treatment Plant to be stabilized and covered in the secondary lagoon. This deviates from Permit
No. WQ0004759 issued May 20, 1991, which allowed the sludge to be stabilized in the bottom of
both the secondary and the primary lagoons.
This permit shall be effective from the date of issuance until April 30, 1996, and shall
hereby void Permit No. WQ0004759 issued May 20, 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.
Pollution Prevention Pays
P.D. Box 27687, Raleigh, North Carolina 27611-7687 Telephone [phone]
An Equal Opportunity Affirmative Action Employer

Mr. McConkey
Permit No. WQ0004759
September 30, 1991
Page Two
One set of approved plans and specifications is being forwarded to you. If you need
additional information concerning this matter, please contact Mr. Lindsay L. Mize at 919/
733-5083.
cc: Wake County Health Department
Tate Lanning & Associates
Raleigh Regional Office
Groundwater Section
Training and Certification
Facilities Assessment

NORTH CAROLINA
ENVIRONMENTAL MANAGEMENT COMMISSION
DEPARTMENT OF ENVIRONMENT, HEALTH AND NATURAL RESOURCES
SLUDGE LAGOON CLOSURE 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 Knightdaie
Wake County
I0
construction and operation of a sludge lagoon closure program consisting of the in place
stabilization of approximately 2,000 cubic yards of sludge with no discharge of wastes to the
surface waters, pursuant to the application received July 18, 1991 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 April 30, 1996, and shall be subject
to the following specified conditions and limitations:
PERFORMANCE STANDARDS
1. Upon completion of stabilization/closure a certification must be received from a
professional engineer certifying that the permitted activity has been completed in
accordance with this permit, the approved plans and specifications. Mail the
Certification to the Permits and Engineering Unit, P.O. Box 29535, Raleigh, NC
27626-0535.
2. The Raleigh Regional Office, phone no. 9191733-2314, shall be notified at least
forty-eight (48) hours in advance of commencement of stabilization activities 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. This permit shall become voidable if the soils fail to adequately stabilize the wastes
and may be rescinded unless the sites are maintained and operated in a manner
which will protect the assigned water quality standards of the surface waters and
ground waters.
4. The lagoon closure program shall be effectively maintained and operated as a
non -discharge system to prevent the discharge of any wastes resulting from the
operation of this program.
5. The issuance of this permit shall not relieve the Permittec of the responsibility for
damages to surface or groundwaters resulting from the operation of this facility.

6. In the event that the lagoon closure program is not operated satisfactorily, including
the creation of nuisance conditions, the Permittee shall take any immediate
corrective actions, including the excavation of the lagoons and a remediation of
groundwater to preexisting conditions.
7. The following buffers zones shall be maintained:
a) 200 feet from residences under separate ownership for subsurface disposal,
b) 100 feet from "SA and SB" classified waters and public surface water supplies,
c) 50 feet from "WS" classified waters and other streams, creeks, lakes, rivers,
and surface water drainage ways for subsurface disposal,
e) 100 feet from property lines
f) 25 feet from public right of ways for subsurface disposal,
g) 10 feet from upslope interceptor drains and surface water diversions,
h) 25 feet from downslope interceptor drains, surface water diversions,
groundwater drainage systems and surface drainage ditches.
H. OPERATION AND MAINTENANCE REQUIREMENTS
1. The facilities and disposal sites shall be properly maintained and operated at all
times.
2. A suitable vegetative cover as approved by the Raleigh Regional Office, shall be
maintained after closure is completed
3. No sludges other than the following are hereby approved for stabilization in this
lagoon closure program in accordance with this permit:
Permit Estimated
Source County Number Volume (cubic yards)
Town of Knightdale Wake abandoned 2,000
6. Upon classification of the facility by the Certification Commission, 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 type and grade at least equivalent to the classification assigned to the wastewater
treatment facilities by the Certification Commission.
7. Adequate procedures shall be provided to prevent surface runoff from carrying any
disposed or stored sludge material into any surface waters.
8. Appropriate measures must be taken to control public access to the land application
sites during active site use. Such controls may include the posting of signs
indicating the activities being conducted at each site.
9. Adequate provisions shall be taken to prevent wind erosion and surface runoff from
conveying pollutants from the sludge application area onto the adjacent property or
into the surface waters.
10. The site shall be adequately limed to a soil pH of at least 6.5 prior to sludge
application. Sludge may be applied to sites with a pH of less than 6.5 provided a
sufficient amount of lime is also applied to achieve a final pH of the lime, sludge
and soil mixture of at least 6.5.
11. The final cap and finished grade of the surface of the secondary lagoon shall be
sloped and graded such that there will be no surface water ponding or erosion.

III. MONITORING AND REPORTINQ REQUIREMENTS
1. Any monitoring (including groundwater, surface water, sludge, soil, or plant tissue
analyses) deemed necessary by the Division of Environmental Management to
insure protection of the environment will be established and an acceptable sampling
and reporting schedule shall be followed. If monitoring data indicates minimal or
no concern to the Division, reduction of monitoring requirements may be pursued
after two annual reporting periods.
2. Noncompliance Notification:
The Permittee shall report by telephone to the Raleigh Regional Office telephone no.
919i133-2314, 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 with the land application program which results in the land
application of significant amounts of wastes which are abnormal in quantity or
characteristic.
b. Any failure of the land application program resulting in a release of sludge
material to receiving waters.
c. Any time that self -monitoring information indicates that the facility has gone out
of compliance with the conditions and limitations of this permit or the
parameters on which the system was designed.
d. Any process unit failure, due to known or unknown reasons, that render the
facility incapable of adequate sludge treatment.
e. Any spillage or discharge from a vehicle or piping system transporting sludge to
the application site.
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 lagoon shall be covered with an impermeable capping material at least one (1)
foot in thickness at all locations with a hydraulic conductivity of no greater than i
x 10-6 centimeters per second when compacted. Verification of the liner's
compliance with hydraulic conductivity and thickness specifications must be
provided to the Division of Environmental Management, Groundwater Section,
by the project engineer.
2. The Compliance Boundary for the disposal system is specified by regulations in 15
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. The sale of
property, by the Permittee, which is within or contiguous to the disposal system
site may alter the location of the Compliance Boundary.
For facilities permitted prior to December 30, 1983, the Compliance Boundary is
established at the lesser of 500 feet from the wastewater lagoons, or the property
boundary, whichever is less.

If the title to any property which may affect the location of the Compliance
Boundary is changed, the Permittee shall notify the DEM 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.
3. Any groundwater quality monitoring as deemed necessary by the Division of
Environmental Management shall be provided.
V. INSPECTIONS
1. The Permittee or his designee shall inspect the sludge storage, transport, and
stabilization 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 by the Division of
Environmental Management or other permitting authority.
2. 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 CONDITIQNS
1. This permit shall become voidable unless the lagoon closure activities are carried
out in accordance with the conditions of this permit and in the manner approved by
this Division.
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 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. 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.
6. 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).
7. 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.
S. A set of approved documents for the subject project must be retained by the
applicant for the life of the permit.
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. This permit may be modified, or revoked and reissued to incorporate any
conditions, limitations and monitoring requirements the Division of Environmental
Management deems necessary in order to adequately protect the environment and
public health.
11. Issuance of this permit hereby voids Permit No. WQ0004759 issued May 20,
1991.
Permit issued this the 30th day of September, 1991
George T. E rett, Dire r
Division of vironmen M agemmt
By Authority o ental Management Commission

Permit No. WQ0004759
September 30, 1991
En 'neer's Certification
I, , 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,
Project Name
Location
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 the approved plans and specifications.
Signature
Date
Registration No

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