WQ0031506_Final Permit_20090206

NCDEN
North Carolina Department of Environment and
Division of Water Quality
Beverly Eaves Perdue Coleen H, Sullins
Governor Director
February 6, 2009
Mr. Ed Kerwin
Executive Director
Orange Water & Sewer Authority
400 Jones Ferry Road
Carrboro, North Carolina 27510
Dear Mr. Kerwin:
Natural Resources
Dee Freeman
Secretary
Subject: Permit No, WQ0031506
Mason Farm WWTP
Conjunctive Reclaimed Water
Storage, Distribution System,
and Bulk Fill Operation
Orange County
In accordance with your permit modification request received January 2, 2009, we are forwarding
herewith Permit No. WQ0031506, dated February 6, 2009, to Orange Water & Sewer Authority
(OWASA) for the construction and operation of the subject wastewater treatment and reclaimed water
utilization facilities. This modified permit approves operation of the distribution system and the use of
OWASA reclaimed water as make-up water for cooling towers located at UNC's Chiller Plants.
This permit shall be effective from the date of issuance until October 31, 2012, shall void Permit
No. WQ0031506 issued February 29, 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. Of special interest to you may be the followings:
+ Condition II.7., The reclaimed water use sites listed in the most recently certified Attachment
B of this permit are approved for use of OWASA reclaimed water. A permit modification
application is required for any new sites to be added to Attachment B.
♦ Condition I1.16., The Permittee shall maintain an active Operational Agreement between the
Permittee (OWASA) and the owner of the reclaimed water user sites listed in the most
recently -certified Attachment B of this permit not owned by the Permittee (e.g. the existing
Water Reuse System contract between OWASA and UNC).
♦ Condition IIIA., No type of wastewater other than that from Mason. Farm WWTP shall be
used at the approved reclaimed water use site(s) except the sites that are identified as being
exempt from this condition in the most recently -certified Attachment B.
AQU"FER PROTECTION SECTIOr'
1636 Ma'' Service Cents% Raleigh, Horth Carolina 27699-163t;
Location: 2728 Capital Boulevard, Raleigh, Nor, Carolina 27604 One
Phone: [phone] FAX 9: 919-715-05W FAX 2: 919-715-6048 i Custome, Servim:1-877-623-5748 Norah CarolinL
Inter,,et: [e-mail]
Nawrally
Na Equal Opportum, , P lirmativa rV,4ft Employer

♦ Condition IV.7., The Permittee shall maintain adequate records to track the amount of
reclaimed water distributed to the approved use sites. These records shall include the
following information for each reclaimed water use site listed in Attachment B:
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)
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 are made this permit shall be final and binding.
Upon completion of construction and prior to operation of the distribution system., a certification
must be received from a professional engineer certifying that the permitted facility has been installed in
accordance with the approved plans and specifications. Mail the Certification to Cecil G. Madden, Jr., P.E.,
Construction Grants & Loans, DWQIDENR, 1633 Mail Service Center, Raleigh, NC 27699-1633.
If you need additional information concerning this matter, please contact Chonticha McDaniel at
[phone] or [e-mail].
Sincerely,
for Coleen H. Sullins
cc: Orange County Health Department
Raleigh Regional Office, Aquifer Protection Section
Technical Assistance and Certification Unit
APS Central Files
LAU Files

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
Orange Water and Sewer Authority
Orange County
I11*l.094*1 1
construction and operation of a reclaimed water storage and distribution system with an initial distribution
capacity of 4.67 million gallons per day, and consisting of approximately 1,280 feet of 24-inch reclaimed
water distribution main at the Mason Farm WWTP; other off -site reclaimed water distribution lines
approved under different permits; a 0.6 MG reclaimed water storage tank; two (2) 2,160 GPM large
distribution pumps, two (2) 595 GPM small distribution pumps, two (2) 1,850 GPM transfer pumps;
chlorine and pH adjustment chemical feed systems; all associated motors, meters, electrical service,
controls, site work, yard pipe, valves, and other appurtenances, pursuant to the application received
March 27, 2007, to serve the OWASA service area,
operation of the use of OWASA reclaimed water at the approved sites listed in the most recently -certified
Attachment B, and
operation of a reclaimed water bulk fill station at the Mason Farm WWTP,
with no discharge of wastes to the surface waters, pursuant to the application received January 2, 2009,
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.
This permit shall be effective from the date of issuance until October 31, 2012, shall void Permit
No. WQ0031506 issued February 29, 2008, and shall be subject to the following specified conditions and
limitations:
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I. SCHEDULES
Upon completion of construction and prior to operation of this permitted facility, a certification (see
attached form) must be received from a professional engineer certifying that the permitted facility has
been installed in accordance with this permit, the approved plans and specifications, and other
supporting materials including the location of all monitoring wells as applicable. If this -project is to
be com feted in phases and.pprtially certified ou shall retain the responsibility to track further
construction approved under the same_permitL and shall provide a final certificate of completion once
the entire project has been complete. Mail the Certification to the Aquifer Protection Section,
Division of Water Quality, 1636 Mail Service Center, Raleigh, NC 27699-1636.
2. The Raleigh Regional Office, telephone number [phone], shall be notified at least 48 hours in
advance (excluding weekends and holidays) of operation of the installed facilities so that an in -place
inspection can be made. Such notification to the Aquifer Protection Section 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. A map of the reclaimed distribution system shall be developed and shall be actively maintained prior
to operation of the distribution system.
4. No later than six months prior to the expiration of this permit, the Permittee 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.
H. PERFORMANCE STANDARDS
The reclaimed water utilization facilities shall be effectively maintained and operated at all tithes 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. Future distribution line specifications must include quality assurance testing procedures and those
procedures, upon approval, must be used prior to operation of this line. If potable water is used in the
distribution system prior to reclaimed water becoming available, the Permittee shall develop specific
cross connection control protocols to prevent cross connection when reclaimed water is subsequently
used. When potable water is being used in the reclaimed water lines, the lines shall not be used for
potable purposes.
4. Construction of the reclaimed water distribution system shall be scheduled so as not to interrupt
service by the existing wastewater system nor result in an overflow or bypass discharge of reclaimed
water to the surface waters of the State.
5. The Permittee shall provide the following items for the reclaimed water distribution system:
a. An air relief valve located at all high points along the force main.
b. Three feet of cover (minimum) over the lines or the use of ferrous material where three feet
cannot be maintained.
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6. Reclaimed water distributed through the bulk fill operations shall not exceed the effluent limitations
specified in Attachment A.
7. The reclaimed water use sites listed in the most recently certified Attachment B of this permit are
approved for use of OWASA reclaimed water. A permit modification application is required for any
new sites to be added to Attachment B.
8. Reclaimed water distributed through the bulk fill operations shall be limited to the uses specified in
Attachment: Approved Bulb Fill Reclaimed Water Uses
9. Compliance and Review Boundaries for the reclaimed utilization areas have not been established
pursuant to 15A NCAC 02T .0905, Any exceedance of groundwater standards shall require action in
accordance with 15A NCAC 02L .0106.
10. 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 habitable residence or place of public assembly under separate ownership: 100
ii. Any private or public water supply source: 100
iii. Surface waters: 50
iv. Any well with exception of monitoring wells: 100
v. Any property line: 50
11. 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.
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.
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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.
12. 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.
13. Reclaimed water distribution lines shall be located 10 feet horizontally from and 18 inches below any
water line where practicable. Where these separation distances cannot be met, the piping and integrity
testing procedures shall meet water main standards in accordance with 15A NCAC 18C.
14, Reclaimed water distribution lines shall not be less than 100 feet from a well unless the piping and
integrity testing procedures meet water main standards in accordance with 15A NCAC I SC, but no
case shall they be less than 25 feet from a private well or 50 feet from a public well.
15. Reclaimed water distribution Iines shall meet the separation distances to sewer lines in accordance
with Rule .0305 of Subchapter 02T.
16. The Permittee shall maintain an active Operational Agreement between the Permittee (OWASA) and
the owner of the reclaimed water user sites listed in the most recently -certified Attachment B of this
permit not owned by the Permittee.
III. OPERATION AND MAINTENANCE REQUIREMENTS
1. 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.
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.
3. No type of reclaimed water other than that from the Orange Water and Sewer Authority's Mason
Farm WWTP, Permit Number NC0025241, is approved for distribution under the conditions of this
permit.
4. Public access to the reclaimed water utilization sites shall be controlled during active site use. Such
controls may include the posting of signs indicating the use of reclaimed water and appropriate
restrictions.
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5. For distribution of reclaimed water, the following requirements must be met:
a. OWASA shall develop and implement an operation and maintenance plan which includes but is
not limited to the following
i. Description of operation,
ii. Description of anticipated maintenance,
iii. Safety measures, including site restrictions,
iv. Spill prevention and spill response plan,
v. Contact information for plant personnel, emergency responders, and regulatory agencies,
vi. Approval procedures of users,
vii. Operational requirements for users, and
viii.If reclaimed water is to be stored for greater than 72 hours prior to use, include a description
of how reclaimed water quality standards will be meet at the time of use.
b. Education program shall be developed and implemented to inform OWASA employees of the
proper use of reclaimed water for each of the approved uses.
c. Education program shall be developed and implemented to inform bulk reclaimed water users of
the proper use of reclaimed water for each approved use. Educational material must be provided
to all individuals accepting the bulk reclaimed water.
d. Use of reclaimed water for vehicle washing shall be conducted in a manner to ensure no surface
runoff.
e. Where reclaimed water is used for industrial purposes, disposal of the utilized reclaimed water
shall meet the conditions included in all State approved permits held by the industry (e.g.
NPDES, Non -Discharge, or Pretreatment permits).
f. The Permittee shall approve tank truck drivers for participation in the bulk reclaimed water
distribution program prior to distribution of reclaimed water. In addition, the Pennittee shall
provide bilingual (English and Spanish) training to all tank truck drivers approved to participate
in the bulk reclaimed water distribution program at a regular frequency. These sessions shall
provide training on, but not limited to, the following topics
i. Reclaimed water description and safety,
ii. Approved and disapproved uses of reclaimed water,
iii. Procedures for the application (including buffer maintenance), uses, and storage of reclaimed
water as well as the disposal of unused reclaimed water,
iv. Procedures for spill prevention, countermeasures, and control as well as notification
requirements,
v. Personal safety and hygiene issues, and
vi. Interaction with the general public.
g. Tank trucks used to transport reclaimed water shall meet the following requirements:
i. Tank trucks and other equipment used to distribute reclaimed water shall be clearly identified
with advisory signs. Signage could include but is not limited to "CAUTION: RECLAIMED
WATER — DO NOT DRINK", "NON -POTABLE WATER", or a combination of similar
phrases
ii. Tank trucks used to transport reclaimed water shall not be used to transport potable water that
is used for drinking or other potable purposes.
iii. Tank trucks used to transport reclaimed water shall not be filled through on -board piping or
removable hoses that may subsequently be used to fill tanks with water from a potable water
supply. Tank trucks owned and operated by the Permittee and dedicated to be filled by
reclaimed water only may be filled through on -board piping.
iv. Tank trucks shall not have been used to haul septage, biosolids, or other waste or chemical
transport.
v. Tank trucks shall not have any type of removable container or portable bladder except if the
tank/bladder is permanently labeled for reclaimed water use only and a letter from the truck
owner is submitted to the Permittee indicating that in no case shall any removable container
or portable bladder be used for both reclaimed and potable water at any time.
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6. OWASA shall develop and maintain a program of routine monitoring and inspection of reclaimed
water users to assure operation of the systems meets the condition of this permit.
7. The residuals generated from these treatment facilities must be disposed / utilized in accordance with
15A NCAC 02T .1100. The Permittee shall maintain a residual management plan pursuant to 15A
NCAC 02T .0914.
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.
3. Flow through the bulk distribution operation 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. A maintenance log shall be maintained at this facility including but not limited to the following items:
a. Visual observations of the plant and plant site,
b. Record of preventative maintenance,
c. Date of calibration of the portable turbidity meter.
6. The Permittee shall maintain adequate records to track the amount of reclaimed water distributed to
the approved use sites. These records shall include the following information for each reclaimed
water use site listed in Attachment B:
a. For distribution at the bulk fill station
i. Date and time of bulk distribution event,
ii. Name and drivers license number of truck operator,
iii. OWASA bulk fill certification number,
iv. Name of end customer,
v. Intended use of the bulk reclaimed water,
vi. Number of gallons provided at each bulk distribution event,
vii. Turbidity measurement results, and
viii.Total volume of bulk reclaimed water distributed each month.
b. For distribution to other reclaimed water use sites
i. Date of distribution or irrigation,
ii. Volume of reclaimed water distributed or irrigated (Monthly Total), and
iii. Weather conditions (for irrigation sites owned or operated by the Permitee only).
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Three copies of all monitoring data [as specified. in Conditions IV.3. and IVA] on Form NDMR for
each point prior to irrigation (PPI) and three copies of all operation and disposal records [as specified
in Conditions IV.6. on Form NDAR-3 for every approved use site 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
8. Inspection and maintenance records shall be maintained for a period of at least three years.
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 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, A general observation of the entire reclaimed distribution system shall be
conducted at least once per year.
2. If any single party obtains more than 25,000 gallons of reclaimed water from the bulk fill operation in
any single day; or more than 100,000 gallons in any single week, OWASA shall visit the sites where
that party is using the reclaimed water to ensure compliance with the conditions of this permit.
Inspections of high volume users do not need to exceed one inspection per quarter. OWASA shall
maintain records of those site visits for at least three years.
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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.
4. 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.
3. 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.
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.
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
15ANCAC 02T .0105(e).
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Permit issued this the 6"' of February 2009
NORTH CAROLINA ENVIRONMENTAL MANAGEMENT COMMISSION
�F
-�br oleen KSullins, Director
Division of Water Quality
By Authority of the Environmental Management Commission
Permit Number WQ0031506
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Permit No. WQ0031506
02/06/2009
ENGINEER'S CERTIFICATION
Partial Final
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
Conjunctive Use Reclaimed Water Storage and Distribution System serving the Orange Water and Sewer
Authority, located in Orange County, hereby state that to the best of my abilities, due care and diligence
was used in the observation of the following construction:
A 625,000 GPD reclaimed water storage and distribution system consisting of
approximately 1280 feet of 24-inch reclaimed water distribution main; a reclaimed water
storage tank providing a capacity of up to 0.6 MG; two (2) 2,160 GPM large distribution
pumps, two (2) 595 GPM small distribution pumps, two (2) 1,850 GPM transfer pumps;
chlorine and pH adjustment chemical feed systems; all associated motors, meters,
electrical service, controls, site work yard pipe, valves, and other appurtenances, in
conformity with the project plan, specifications, and other supporting data subsequently
filed and approved by the Department of Environment and Natural Resources.
I certify that the construction of the above; referenced project was observed to be built within substantial
compliance and intent of the approved plans and specifications.
Signature Registration No,
Date
Mail this Certification to: Attention: Cecil Madden, Jr., P.E.
Construction Grants & Loans Section
Division of Water Quality
1633 Mail Service Center
Raleigh, NC 27699-1633
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ATTACHMENT A - LIMITATIONS AND MONITORING REQUIREMENTS
PPI 001— Reclaimed Water Distribution
Permit Number: WQ0031506 Version: 1.4
RECLAIMED WATER CHARACTERISTICS
RECLAIMED WATER LIMITS
MONITORING REQUIREMENTS
Parameter Description - PCS Code
Monthly Average
Weekly Average
Daily Maximum
Measurement
Frequency
Sample
Type
Nitrite plus Nitrate Total I DET. (as N) - 00630
Weekly b
Composite
Solids, Total Suspended - 00530
5
mg/I
10
mg/l
Daily
Composite
Chloride (as Cl) - 00940
3 X year`
Composite
Nitrogen, Ammonia Total (as N) - 00610
4
mg/I
6
mg/l
Daily
Composite
BUD, Carbonaceous 05 Day, 20C - 80082
10
mg/l
I5
mg/1
Dailyb
Composite
Coliform, Fecal MF, M-FC Brotli,44.5C - 31616 (geom.mean)
14 a
#/100ml
25
#/100ml
DaiIyb
Grab
Turbidity, HCH Turbidimiter - 00076 a
10
ntu
Continuous
Continuous
Flow, in conduit or thru treatment plant - 50050
Continuous
Recorder
pH - 00400
6.0 — 9.0 `
su
9.0
Su
Daily b
Grab
a Effluent sample location for all parameters except turbidity and fecal coliform shall be sampled at the effluent sampling point associated with NPDES permit
NC0025241. Turbidity and fecal coliforn sampling shall be at the point of entry where the turbidity meter is located.
b Sampling frequency is set to match NPDES permit sampling frequency. Sample results associated with NPDES permitting requirements can be used for meeting
the sampling requirements for this permit as long as the sampling locations remain the same in both permits.
3 X year sampling shall be perforned every March, July and November.
d Monthly average for fecal coliforn shall a geometric mean.
'Recorded turbidity meter results shall be documented and maintained with each bulk rifling event. The highest turbidity value recorded for each day of operation
shall be reported.
'The effluent pH shall not be Iess than 6.0 standard units nor greater tlian 9.0 standard units
WQ0031506 Version 1.4 Attachment A Page i of

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WQ003I- ,, Version IA Ai. anent A .age 2 of

ATTACHMENT B - APPROVED RECLAIMED WATER USE SITES AND LIMITATIONS
Orange Water and Sewer Authority— Mason Farm WWTP
Permit Number: WQ0031506
UTILIZATION AREA INFORMATION
APPLICATION LIMITATIONS
Site ID
Owner
User Facility Name
County
Latitude
Longitude
Net
Acreage
Permit Number
Parameter
Dourly
Precipitation
Yearly
Precipitation
01
OWASA
Bulk Fill Station
a
at Masan Farm WW"1�P
Orange
WQ0031506
02
University of Carolina
D(UN
at Chapel ill {1JNC
Chiller plants on the main campusl'
Orange
WQ0031506
Total
a An estimated average flow distributed to this facility is 100,000 gallons per day (GPD).
Estimated average flows distributed to each chiller plant are.
Tomkins Chiller Plant
= 116,000
GPD.
South Chiller Plant
= 368,000
GPD
East Chiller Plant
= 90,000
GPD
UNC Hospitals Chiller Plants
= 188,000
GPD
North Chiller Plant
= 252,000
GPD
Cobb (Northeast) Chiller Plant
= 194,000
GPD
WQ0031506 Version 1.4 Attachment B Page I of

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WQ0031.. Version 1.4 At, ,Went B Wage 2 of 2 ,

ATTACHMENT -- APPROVED BULK FILL RECLAIMED WATER USES
Permit Number: WQ0031506 Version: 1.4
Orange Water and Sewer Authority -- Mason Farms WWTF Bulk Fill Operation
Certification Date— 01/22/2008
APPROVED USES
ADDITIONAL REQUIREMENTS AND COMMENTS
For use by Permittee or permitee affiliations (i.e municipal employees, or
contracted service roviders).a
Fire fighting and fire extinguishing
Must meet Public Water Sup ly requirements.
Sewer cleaning (not washing)
Street sweeping (not street cleaning);
Vehicle and equipment washing
Provided that no ponding or run-off of the reclaimed water occurs.
Reclaimed water distribution line pressure testing
Provided the water is returned to the sanitary sewer, or used for other approved reclaimed
water uses after testing.
For use by certified bulk reclaimed water users. a
Concrete cutting
Decorative ponds and fountains that drain to sanitary sewers stems;
Industrial and commercial cooling water;
Industrial and commercial fire prevention systems where there are separate,
non -potable plumbing lines
Irrigation of public and rivate landscapes and turf,
Make-up water for brine slurry or similar
Brine slurry to be applied to roads to prevent freezing. Brine solutions using reclaimed
water are exempt from maximum hold time prior to use established in Condition III.9.a.viii
of this pe it.
Make-up water for preparation of pesticide solutions or similar
Use of reclaimed water does not exempt user from meeting the use and disposal
requirements of the created solution. Pesticide solutions using reclaimed water are exempt
from maximum hold time prior to use established in Condition III.9.a.viii of this ermit_
Non- otable processes such as concrete production and compost production
Must meet compost permit requirements -
Soil compaction and dust suppression;
May including irrigation to clay or synthetic clay tennis courts, or similar.
Subsurface Directional Boring
Does not include borings into bedrock or installation of any wells subject to 15A NCAC 2C
- Wet] Construction Regulations.
Vehicle washing and power washing
Provided that dual disinfection with UV and chlorination is provided, and that no ponding or
run-off of the reclaimed water occurs -
Hydro -seeding and fertilizer mixing
a All users, either under control of Permitee or not must complete educational training and receive certification prior to receiving bulk reclaimed water from the
pet7nitted facility.
WQ0031506 Version 1.4 Attachment --Approved Bulk Fill Reclaimed Water Uses Page I of I