WQ0023213_Final Permit_20081208

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Michael F. Easley, Governor
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William G. Ross Jr., Secretary
North Carolina Department of Environment and Nat=] Resources
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Coleen
Division n
of Water Quality
December 8, 2008
Roger Spach, Water Resources Superintendent
City of Lexington Water Resources Department
28 W. Center Street `
Lexington, North Carolina 28292
Subject: Permit No. WQ0023213
Lexington Golf Course
Conjunctive Wastewater
Treatment and Reclaimed Water
Utilization System
Davidson County
Dear Mr. Spach:
In accordance with your permit renewal and modification request received September 25, 2008,
we are forwarding herewith Permit No. WQ0023213, dated December 8, 2008, to the City of Lexington
for the continued operation of the subject wastewater treatment and reclaimed water utilization facilities.
In this permit, the total acreage of the irrigated area is being adjusted (adding 0.5 acres to Zone 3 and
deleting 1.43 acres from Zone 1) to reflect the actual utilized areas.
This permit shall be effective from the date of issuance until November 30, 2013, shall void
Permit No. WQ0023213 issued July 11, 2008, 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 the City of Lexington wishes to expand the approved uses of reclaimed water as a bulk fill
station, please be advised that a permit modification (to add a bulk fill station that capable of measuring
flow and turbidity for each truck load) is required and an education program shall be developed to inform
the employees and bulk reclaimed water users of the proper use of reclaimed water for each type of use.
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 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 arc made this permit shall be final and binding.
If you need additional information concerning this matter, please contact Chonticha McDaniel at
[phone] or [e-mail].
Sincerely,
n
for Co een H. Sullins
NoorthCarolina
�Cl'tllPf7��lf
Aquifer Protection section 1636 Mail Service Center Raleigh, NC 27699-1636 Telephone : [phone]
Internet: www.newatemuality.org Location: 2728 Capital Boulevard Raleigh, NC 27604 Fax 1: [phone]
Fax 2: [phone]
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cc: Davidson County Health Department
Winston-Salem Regional Office, Aquifer Protection Section
Technical Assistance and Certification Unit
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NORTH CAROLINA
ENVIRONMENTAL MANAGEMENT COMMISSION
DEPARTMENT OF ENVIRONMENT AND NATURAL RESOURCES
RALEIGH
CONJUNCTIVE WASTEWATER TREATMENT AND RECLAIMED WATER UTILIZATION
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
City of Lexington
Davidson County
I11s>.001:111
operation of a 300,000 GPD conjunctive reclaimed water scalping treatment facility and reclaimed water
utilization system consisting of an interceptor vault diverting flow to an influent pump station with dual
208 gallon per minute (GPM) pumps, a communitor, a 300,000 gallon fine bubble aeration basin with two
(2) 1,100 cubic feet per minute (CFM) centrifugal blowers, one (1) 58,130 gallon clarifier with a 312
GPM return/waste sludge pump, one (1) tertiary disc filter, a 1,038 gallon chlorine contact basin, an
effluent flow measuring device, an effluent composite sampler, a turbidimeter, a 500,000 gallon storage
tank, a reclaimed water utilization system consisting of dual 1,100 GPM pumps operating at 312 TDH,
approximately 87 acres of spray irrigation area with 891 sprinkler heads and all associated piping, valves,
controls, and appurtenances
to serve Lexington Golf Course, with no discharge of wastes to the surface waters, pursuant to the
application received February 12, 2008, and subsequent additional information received by the Division
of Water Quality (Division), 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. In addition, under the conditions of this permit, the City may utilize the
reclaimed water for land application to areas owned by the City intended to be accessible to the public.
Uses may also include vehicle washing, soil compaction for construction purposes, and street sweeping
(not street washing).
This permit shall be effective from the date of issuance until November 30, 2013, shall void Permit
No. WQ0023213 issued July 11, 2008, and shall be subject to the following specified conditions and
limitations:
I, SCHEDULES
No later than six months prior to the expiration of this permit, the Perfnittee shall request renewal of
this permit on official Division forms. Upon receipt of the request, the Division will review the
adequacy of the facilities described therein, and if warranted, will renew the permit for such period of
time and under such conditions and limitations as it may deem appropriate. Please note that Rule
15A NCAC 02T .0105(d) requires an updated site map to be submitted with the permit renewal
application.
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II. PERFORMANCE STANDARDS
The reclaimed water utilization 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 due to improper operation and maintenance, or failure of
the utilization 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.
2. The issuance of this permit shall not relieve the Permittee of the responsibility for damages to ground
or surface waters resulting from the operation of this facility.
3. The conjunctive use of reclaimed water permitted herein in no way negates, precludes, or invalidates
the most recent reissuance of NPDES permit (NC0055786), and the Permittee shall continue to
comply with all conditions provided for therein.
4. Effluent limitations shall not exceed those specified in Attachment A,
Application rate(s), whether hydraulic, nutrient, or other pollutant shall not exceed those specified in
Attachment B.
6. The Compliance and Review Boundaries for the reclaimed utilization system are established at the
property boundary. Any exceedance of standards at the Compliance or Review Boundary shall
require action in accordance with 15A NCAC 02L .0106.
7. The Permittee shall apply for a permit modification prior to any sale or transfer of property that
affects a compliance boundary to establish a new compliance boundary.
8. In accordance with 15A NCAC 02L .0107(d), no wells, other than monitoring wells, shall be
constructed within the compliance boundary except as provided by 15A NCAC 02L .0107(g).
9. The facilities permitted herein must be constructed according to the following setbacks:
a. The setbacks for reclaimed utilization sites shall be as follows (all distances in feet):
i. Surface waters not classified SA: 25
ii. Surface waters classified SA: 100
iii. Any well with exception to monitoring wells 100
b. The setbacks for treatment and storage units shall be as follows (all distances in feet):
i. Any well with exception of monitoring wells:
ii. Any property line:
100
50
10. The following shall be requirements for the reclaimed water distribution, storage, and utilization
facilities:
a. All reclaimed water valves, storage facilities, and outlets shall be tagged or labeled to warn the
public or employees that the water is not intended for drinking. Where appropriate, such warning
shall inform the public or employees to avoid contact with the water.
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b. All reclaimed water piping, valves, outlets, and other appurtenances shall be color -coded, taped,
or otherwise marked to identify the source of the water as being reclaimed water.
i. All reclaimed water piping and appurtenances shall be either colored purple (i.e., Pantone
522) and embossed or integrally stamped or marked "CAUTION: RECLAIMED WATER —
DO NOT DRINK" or be installed with a purple (i.e., Pantone 522) identification tape or
polyethylene vinyl wrap. The warning shall be stamped on opposite sides of the pipe and
repeated every three feet or less.
ii. Identification tape shall be at least three inches wide and have white or black lettering on
purple (i.e., Pantone 522) field stating "CAUTION: RECLAIMED WATER — DO NOT
DRINK." Identification tape shall be installed on top of reclaimed water pipelines, fastened
at least every 10 feet to each pipe length and run continuously the entire length of the pipe.
iii. Existing underground distribution systems retrofitted for the purpose of distributing
reclaimed water shall be taped or otherwise identified as noted above. This identification
need not extend the entire length of the distribution system, but shall be incorporated within
10 feet of crossing any potable water supply line or sanitary sewer line.
c. All reclaimed water valves and outlets shall be of a type, or secured in a manner, that permits
operation by authorized personnel only.
d. Above -ground hose bibs (i.e., spigots or other hand -operated connections) shall not be present.
Hose bibs shall be located in locked below -grade vaults that shall be clearly labeled as being of
non -potable quality. As an alternative to the use of locked below -grade vaults with standard hose
bibs services, hose bibs, which can only be operated by a special tool or connected to a special
hose connection, may be placed in non -lockable underground services boxes clearly labeled as
non -potable water.
11. The Permittee shall maintain an active cross -connection control program that shall have the following
minimum requirements:
a. No direct cross -connections shall be allowed between the reclaimed water and potable water
systems.
b. A reduced pressure principle backflow preventer, an approved air gap separation., or other device
approved by the Division of Environmental Health shall be installed at the potable water service
connection to the use area where both reclaimed water and potable water are supplied to a
reclaimed water use area. The installation of the reduced pressure principle backflow prevention
device shall allow proper testing.
c. An air gap separation, approved and regularly inspected by the Permittee shall be provided
between the potable water and reclaimed water systems where potable water is used to
supplement a reclaimed water system.
M. OPERATION AND MAINTENANCE REOUiREMENTS
The facilities shall be properly maintained and operated at all times. 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. The Permittee shall maintain an Operation and
Maintenance Plan pursuant to 15A NCAC 02T .0913 including operational functions, maintenance
schedules, safety measures, and a spill response plan.
2. Upon classification of the wastewater treatment and reclaimed utilization 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 08G .0200. The
ORC shall visit the facilities in accordance with 15A NCAC 08G .0200 or as specified in this permit
and shall comply with all other conditions specified in these rules.
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3. A suitable year round vegetative cover shall be maintained such that crop health is optimized, allows
for even distribution of effluent, and allows inspection of the reclaimed water utilization system.
4. Adequate measures shall be taken to prevent ponding or runoff from the reclaimed water utilization
areas.
5. Reclaimed water application shall not be performed during inclement weather or when the ground is
in a condition that will cause ponding or runoff.
6. No type of wastewater other than that from the City of Lexington reclaimed water scalping facility
shall be applied to the reclaimed water utilization area(s).
7. Public access to the reclaimed water utilization sites shall be controlled during active site use. Such
controls may include the posting of signs showing the activities being conducted at each site. A sign
shall be posted in plain sight in the clubhouse showing these activities.
8. For use of the reclaimed water for irrigation outside of the Lexington Golf Course the following
criteria must be met:
a. Notification shall be provided to inform the public and City employees of the use of reclaimed
water and that the reclaimed water is not intended for drinking.
b. The City shall develop and maintain a program of record keeping for the distribution of reclaimed
water.
c. Land application of the reclaimed water must be on property owned by the City.
d. Use of reclaimed water for vehicle washing shall be conducted in a manner to ensure minimal
surface runoff and the City shall provide educational information to the users on the proper use of
the reclaimed water.
e. The City shall develop and maintain an education program for the proper use of reclaimed water
for each type of use to be utilized by the City.
f. The City shall develop and maintain a program of routine review and inspection of reclaimed
water users.
9. Diversion or bypassing of the untreated wastewater from the treatment facilities, except to the sewer
line, is prohibited.
10. All wastewater exceeding the limit for fecal coliform (daily maximum concentration of 25 per 100
ml) or turbidity (instantaneous maximum of 10 NTU) shall be routed to the outfall for treatment at the
City of Lexington WWTF (NC0055786).
IV. MONITORING AND REPORTING REQUIREMENTS
1. Any monitoring (including groundwater, surface water, soil or plant tissue analyses) deemed
necessary by the Division to ensure surface and ground water protection will be established and an
acceptable sampling reporting schedule shall be followed.
2. All laboratory analyses for effluent, ground waters, or surface waters shall be made by a laboratory
certified by the Division for the required parameter(s) under 15A NCAC 02H .0800.
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3. Flow distributed to the conjunctive reclaimed water system shall be continuously monitored and daily
flow values shall be reported on Form NDMR.
The Permittee shall maintain an appropriate flow measurement device consistent with approved
engineering and scientific practices to ensure the accuracy and reliability of 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, and
c. Percent from true flow.
4. The effluent from the subject facilities shall be monitored by the Permittee at the frequency(ies) and
location(s) for the parameter(s) specified in Attachment A.
5. The Permittee shall maintain adequate records to track the amount of reclaimed water distributed.
These records shall include the following information for each reclaimed water use site listed in
Attachment 13:
a. Date of distribution or irrigation,
b. Volume of reclaimed water distributed or irrigated (Monthly Total), and
c. Weather conditions (for irrigation sites owned or operated by the Permitee only)
Three copies of all monitoring data [as specified in Conditions IV.3. and IVAJ on Form NDMR for
each point prior to irrigation (PPI) and three copies of all operation and disposal records [as specified
in Conditions IV.5. and IV.6, on Form NDAR-3 for every utilization area shall be submitted on or
before the last day of the following month. If no activities occurred during the monitoring month,
monitoring reports are still required documenting the absence of the activity. 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
7. A record shall be maintained of all residuals removed from this facility. This record shall include the
name of the hauler, permit authorizing the disposal or a letter from a municipality agreeing to accept
the residuals, date the residuals were hauled, and volume of residuals removed.
S. A maintenance log shall be maintained at this facility including but not limited to the following items:
a. Daily sampling results of dissolved oxygen in the aeration basin and at the clarifier weir.
b. Visual observations of the plant and plant site.
c. Record of preventative maintenance (changing of filters, adjusting belt tensions, alarm testing,
diffuser inspections and cleanings, etc.).
d. Date of calibration of flow measurement device.
e. Date and results of power interruption testing on alternate power supply.
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9. Noncompliance Notification:
The Permittee shall report by telephone to the Winston-Salem Regional Office, telephone number
[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 including ponding in the reclaimed utilization area or
runoff from the reclaimed utilization areas.
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 disposal system resulting in a by-pass directly to receiving waters.
d. Any time that self -monitoring information indicates that the facility has gone out of compliance
with its permit limitations including, but not limited to, freeboard measurements, effluent
limitations, exceedances of groundwater standards, or overloading of any utilization area.
For any emergency that requires immediate reporting (e.g., discharges to surface waters, imminent
failure of a storage structure, etc.) outside normal business hours must be reported to the Division's
Emergency Response personnel at telephone number [phone], [phone], or (919) 733-
3300. 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.
V. INSPECTIONS
1. Adequate inspection and maintenance shall be provided by the Permittee to ensure 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 five years from the date of the inspection and shall be
made available upon request to the Division or other permitting authority.
3. 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. 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.
2. 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.
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This permit is effective only with respect to the nature and volume of wastes described in the
application and other supporting data. No variances to applicable rules governing the construction
and / or operation of the permitted facilities are granted unless specifically requested and granted in
this permit.
4. 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) that have jurisdiction. Of particular concern to the Division are applicable river buffer
rules in 15A NCAC 02B .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 02B .0200 and 02H .0500.
5. 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 on official Division forms,
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. The
Permittee of record shall remain fully responsible for compliance until a permit is issued to the new
owner.
The Permittee shall retain a set of approved plans and specifications for the life of the facilities
permitted herein.
7. The Permittee shall maintain this permit until all permitted facilities herein are properly closed or
permitted under another permit issued by the appropriate permitting authority.
8. The Permittee must pay the annual fee within 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 pursuant to
15A NCAC 02T .0105(e).
Permit issued this the 8`L' of December 2008
NORTH CAROLINA ENVIRONMENTAL MANAGEMENT COMMISSION
C een Sullins, Director
Division of Water Quality
By Authority of the Environmental Management Commission
Permit Number WQ0023213
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ATTACHMENT A - LIMITATIONS AND MONITORING REQUIREMENTS
PPI 001 - Effluent Monitoring Parameters
Permit Number: WQ0023213 Version: 2.0
EFFLUENT CHARACTERISTICS
EFFLUENT LIMITS
MONITORING REQUIREMENTS
Parameter Description - PCS Code
Monthly Average
Weekly Average
Daily Maximum
Measurement
Frequency
Sample
Type
Solids, Total Suspended - 00530
5
mg/l
10
mg/1
2 X month
Composite
Nitrogen, Nitrate Total (as N) - 00620
2 X month
Composite
Nitrogen, Ammonia Total (as N) - 00610
4
mg/i
6
mgA
2 X month
Composite
BOD, 5-Day (20 Deg. C) - 00310
10
mg/l
15
mg/1
2 X month
Composite
Co[iform, Fecal MF, M-FC Broth,44.5C - 31616 (geom.mean)
14
#/100m[
25
#/100111[
2 X month
Grab
Chlorine, Total Residual - 50060
5 X week
Grab
pH - 00400
6.0 - 9.0
su
5 X week
Grab
Flow, in conduit or thru treatment plant - 50050
300,000
gpd
Continuous
Recorder
Turbidity, HCH Turbidimiter - 00076
10
ntu
Continuous
Recorder
' Monitoring parameters for PPI 001 shall be recorded on form NDMR
PPI 002 — Flow to Golf Course
EFFLUENT CHARACTERISTICS
EFFLUENT LIMITS
MONITORING REQUIREMENTS
Parameter Description - PCS Code
Monthly Average
Weekly Average
Daily Maximum
Measurement
Frequency
Sample
Type
Flow - 50050
Monthly
Recorder
' Monitoring parameters for PPI 002 shall be recorded on form NDAR-3
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WQ00231,_ _ Version 2.0 Attachment A ;e 2 of 2

ATTACHMENT B - APPROVED RECLAIMED WATER USE SITES AND LIMITATIONS
City of Lexington / Lexington Golf Course - Wastewater Reuse System
Permit Number: WQ0023213
UTILIZATION AREA INFORMATION
APPLICATION LIMITATIONS
Field/
Basin
Owner
County
Latitude
Longitude
Net Acreage
Dominant
Soil Series
Parameter
Permitted Hourly
Precipitation
Permitted
nearly
Precipitation
I
City Of Lexington
Davidson
35147'37"
80° 14'54"
87.0
Cecil
01284 - Application Surface Irrigation
See Footnote 2
See Footnote I
Total
87.0
Irrigation limited to the water needs of the irrigated turf without any runoff.
Precipitation rates are as follows;
Zone I and 4 "- 0.20 inches/hour, Zone 2 and 7 = 0.15 inches/hour, Zone 3 = 0.50 inches/hour, Zone 5 and 8 = 0.30 inches/hour, and Zone 6 = 0.25 inches/hour.
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