WQ0031506_Final Permit_20161229

Water Resources
ENVIRONMENTAL QUALITY
PAT MCCRORY
Govemor
DONALD R. VAN DER VAART
Secretary
S. JAY ZIMMERMAN
Director
December 29, 2016
ED KERwiN — EXECUTIVE DIRECTOR
ORANGE WATER AND SEWER AUTHORITY
400 JONEs FERRY ROAD
CARRBORO, NORTH CAROLINA 27510-2001
Dear Mr. Kerwin:
Subject: Permit No. WQ031506
Mason Farm WWTP
Conjunctive Reclaimed Water
Utilization and Bulk
Distribution System
Orange County
In accordance with your permit renewal request received May 10, 2016, we are forwarding
herewith Permit No. WQ0031506 dated December 29, 2016, to Orange Water and Sewer Authority for the
continued operation of the subject conjunctive reclaimed water utilization facilities and reclaimed water
bulk distribution system.
This permit shall be effective from the date of issuance until November 30, 2021, shall void Permit
No. WQ0031506 issued September 21, 2011, and shall be subject to the conditions and limitations as
specified therein. Please pay particular attention to the monitoring requirements listed in Attachments A,
B, and D for they may differ from the previous permit issuance. Failure to establish an adequate system
for collecting and maintaining the required operational information shall result in future compliance
problems.
Please note the following permit conditions have been deleted since the last permit issuance
dated September 21, 2011:
➢ Old Conditions 1I.9., H.10., and 11.11. — These conditions have been moved to Condition 11.9.c.
➢ Old Condition II.12. — This condition has been removed.
➢ Attachment A —Old PPI 003 (Cooling Towers at UNC Chiller Plants: Cooling Tower Makeup),
PPI 004 (Irrigation and toilet flushing at UNC Chapel Hill: Used listed in Permit WQ0034219)
and PPI 005 (St. Thomas More Catholic Community: Athletic Field Irrigation and toilet
flushing) have been combined into a new PPI 003.
Please note the following permit conditions are new since the last permit issuance dated
September 21, 2011:
➢ Condition 111.2. — This condition requires the Permittee to maintain an Operation and
Maintenance Plan.
➢ Condition 111.4. — This condition requires that the turbidimeter be calibrated.
State of North Carolina E Environmental Quality I Water Resources I Water Quality Permitting I Non -Discharge Permitting
1617 Mail Service Center I Raleigh, North Carolina 27699-1617
919 807 6464

Mr. Ed Kerwin
December 29, 2016
Page 2 of 2
➢ Condition 111.7. — This condition requires that the effluent be discharged in accordance with
Permit No. NCO025241 if the limits for fecal coliform or turbidity exceed reclaimed water
standards.
➢ Condition III.9. — This condition prohibits reclaimed water being used for activities other than
land application shall not be used in a manner that causes exposure to aerosols.
➢ Condition III.10. —This condition prohibits using reclaimed water to be used for swimming
pools, hot tubs, spas, or similar uses Description of new condition
➢ Condition III.11. -- This condition prohibits using reclaimed water to be used for direct reuse
as a potable water supply.
➢ Condition IV.7(d) - This condition requires that the Permittee keep a record of preventative
maintenance (e.g., changingiadjusting of equipment, pump and valve maintenance, cross
connection control, testing, inspections and cleanings, etc.
➢ Condition IV.7(e). — This condition requires that the Permittee keep a record of all unpermitted
releases of reclaimed water to surface water or land surface including date of occurrence,
estimated volume of release, cause, and corrective action taken.
➢ Condition IV. 10(c). — This condition requires the Permittee to notify the regional office if there
is a failure resulting in a discharge of reclaimed water directly to surface waters or any
unpermitted release of reclaimed water to land surface greater than or equal to 5,000 gallons.
➢ Attachment A (PPI001) — pH has been removed from the monitoring requirements.
If any parts, requirements or limitations contained in this permit are unacceptable, the Permittee
has the right to request an adjudicatory hearing upon written request within 30 days following receipt of
this permit. This request shall 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 at 6714 Mail Service
Center, Raleigh, NC 27699-6714. Unless such demands are made, this permit shall be final and binding.
If you need additional information concerning this permit, please contact Alice M. Wessner at (919)
807-6425 or [e-mail].
Sincerely,
DiJay Zimmerman, P.G., Direc r
vision of Water Resources
cc: Orange County Health Department, Colleen Bridger, Health Director, cbridgerAco.orange.n_ c.us
(Electronic Copy)
Raleigh Regional Office, Water Quality Regional Operations Section (Electronic Copy)
Digital Permit Archive (Electronic Copy)
Central Files

NORTH CAROLINA
ENVIRONMENTAL MANAGEMENT COMMISSION
DEPARTMENT OF ENVIRONMENTAL QUALITY
RALEIGH
CONJUNCTIVE RECLAIMED WATER UTILIZATION AND BULK DISTRIBUTION 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
FOR THE
continued operation of a 4.67 million gallons per day (MGD) reclaimed water storage and distribution
system consisting of:
approximately 1,280 linear feet (LF) of 24-inch reclaimed water distribution line at the Mason Farm
WWTP, and other off -site reclaimed water distribution lines approved under different permits; a 0.6 million
gallon (MG) reclaimed water storage tank; two 2,160 gallon per minute (GPM) reclaimed distribution
pumps; two 595 GPM reclaimed water distribution pumps; two 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
to serve a reclaimed water bulk fill station located at Mason Farm WWTP, and the user facilities listed
below and the Attachment B of this permit; and
Site ID
Facility Name
Owner
County
Latitude
Longitude
1
UNC-CH Chiller Plants
The University of North Carolina at
Orange
35.901667'
-79,052501°
Chapel Hill
2
UNC-CH Reclaimed Water
The University of North Carolina at
Orange
Pro am
Cha el Hill
35.907222°
-79.048056°
3
St, Thomas More Catholic
Community
Carlos Lima
Orange
35.9052780
-79.0322220
with no discharge of wastes to surface waters, pursuant to the application received May 10, 2016, and in
conformity with the project plans, specifications, and other supporting data subsequently filed and approved
by the Department of Environmental Quality and considered a part of this permit.
This permit shall be effective from the date of issuance until November 30, 2021, shall void Permit No.
WQ0031506 issued September 21, 2011, and shall be subject to the following specified conditions and
limitations:
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I. SCHEDULES
No later than six months prior to the expiration of this permit, the Pennittee 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 Rule 15A
NCAC 02T .0105(d) requires an updated site map to be submitted with the permit renewal application.
[15A NCAC 02U .0106, 02U .0109]
II. PERFORMANCE STANDARDS
1. The subject reclaimed water facilities shall be effectively maintained and operated at all times so there
is no discharge to surface waters, nor any contravention of groundwater or surface water standards.
Please note the May 23, 2012, compliance and enforcement memo for reclaimed water identified certain
discharges to surface water as `deemed permitted.' (i.e. reclaimed water from flushing and hydrostatic
testing and de minimis runoff from fire extinguishing, dust control, soil compaction and street
sweeping). In the event the facilities fail to perform satisfactorily, including the creation of nuisance
conditions due to improper operation and maintenance, or failure of the utilization areas to adequately
assimilate the reclaimed water, the Permittee shall take immediate corrective actions including Division
required actions, such as the additional or replacement reclaimed water utilization facilities or cessation
of reclaimed water utilization activities. [G.S. 143-215.1, 143-213.3(a)]
2. This permit shall not relieve the Permittee of their responsibility for damages to groundwater or surface
water resulting from the operation of this facility. [15A NCAC 02B .0200, 02L .0100]
3. Effluent limitations shall not exceed those specified in Attachment A. [15A NCAC 02U .0300]
4. Reclaimed water may only be utilized at the sites listed in Attachment B. [G.S. 143-215.11
5. Reclaimed water distributed through bulk fill stations may only be utilized for the purposes listed in
Attachment D. [G.S. 143-215.1]
6. The conjunctive use of reclaimed water permitted herein in no way negates, precludes, or invalidates
the most recent reissuance of the Permittee's NPDES permit (Permit No. NC0025241), and the
Permittee shall continue to comply with all conditions provided for therein. [G.S. 143-215.1 ]
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7. 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 reclaimed water is not intended for drinking. Where appropriate, such
warning shall inform the public or employees to avoid contact with reclaimed 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 reclaimed water pipelines in a visible manner, 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. Hose bibs shall be located in locked, below grade vaults that shall be labeled as being of non -
potable quality. As an alternative to the use of locked vaults with standard hose bib services, other
locking mechanisms such as hose bibs which can only be operated by a tool may be placed above
ground and labeled as non -potable water.
[15A NCAC 02U .0403]
8. No direct cross -connections shall be allowed between reclaimed water and potable water systems,
unless such connection has been approved by the Department pursuant to 15A NCAC 18C .0406. [15A
NCAC 02U .0403(f)]
9. The facilities permitted herein shall 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 final effluent storage units shall be as follows (all distances in feet):
i. Any private or public water supply source: 100
ii. Surface waters: 50
iii. Any well with exception of monitoring wells: 100
iv. Any property line: 5010,
' Section 22.(c)(2) of Session Law 2013-413 exempts final reclaimed water effluent storage
facilities constructed prior to June 18, 2011 from having a setback to property lines.
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c. The separation distances for reclaimed water distribution lines permitted herein shall be as follows
(distances as specified)':
i. Any potable water line (horizontal): loft
ii. Any potable water line (vertical — reclaimed below potable water): 18 in
iii. Any well with exception of monitoring wells: 100 f1
iv. Any sewer line (horizontal): 2 ft
v. Any sewer line (vertical — reclaimed over sewer): 18 in
1 In any instance where the above separation distances cannot be met, the piping and integrity
testing procedures shall meet water main standards in accordance with 15A NCAC 18C, but in
no case shall reclaimed distribution lines be less than 25 feet from a private well or 50 feet from
a public well.
[I SA NCAC 02U.0701]
OPERATION AND MAINTENANCE REQUIREMENTS
1. The reclaimed water utilization facilities shall be properly maintained and operated at all times. The
facilities shall be effectively maintained and operated as a reclaimed water system to prevent the
discharge of any reclaimed water or partially treated effluent resulting from the operation of this facility.
Please note the May 23, 2012, compliance and enforcement memo for reclaimed water identified certain
discharges to surface water as `deemed permitted.' (i.e. reclaimed water from flushing and hydrostatic
testing and de minimis runoff from fire extinguishing, dust control, soil compaction and street
sweeping) [15ANCAC 02T .0108(b)(1)]
2. The Permittee shall maintain an Operation and Maintenance Plan, which at a minimum shall include
the following:
a. Description of the system in sufficient detail to show what operations are necessary for the system
to function and by whom the functions will be conducted;
b. A map of all distribution lines and record drawings of all utilization systems under the Permittee's
control;
c. Description of anticipated maintenance activities;
d. Include provisions for safety measures including restriction of access to sites and equipment; and
e. Spill control provisions including response to upsets and bypasses including control, containment,
remediation, and contact information for plant personnel, emergency responders and regulatory
agencies.
f. For bulk fill operations, the Permittee shall develop an operation and maintenance plan for bulk
distribution activities 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 plan 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, included a description
of how compliance with reclaimed water quality standards will be ensured the time of use.
[I5A NCAC 02U .0801]
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Upon the Water Pollution Control System Operators Certification Commission's (WPCSOCC)
classification of the subject non -discharge facilities, in accordance with 15A NCAC 08G .0200 the
Permittee shall designate and employ a certified operator in responsible charge (ORC) and one or more
certified operator(s) as back-up ORC(s). The ORC or their back-up shall visit the facilities in
accordance with 15A NCAC 08G .0200, and shall comply with all other conditions specified in the
previously cited rules. At the time of this permit issuance, a certified ORC is not required for
conjunctive reclaimed water users. [15A NCAC 02U .0117]
4. The turbidimeter shall be tested and calibrated at a minimum of once per year. Calibration records
shall be maintained at the facility for a period of no less than five years, and shall be made available to
the Division upon request. [ 15A NCAC 02T .0108(b)(1)]
5. Only reclaimed water generated at Mason Farm WWTP (Permit No. NC0025241) shall be utilized
and/or distributed in accordance with this permit. [G.S. 143-215.1]
6. Public access to 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. [15A
NCAC 02U .0501]
7. Effluent shall be discharged in accordance with Permit No. NCO025241 if the limit for fecal coliform
(e.g., daily maximum concentration of 25 colonies per 100 mL) or turbidity (e.g., instantaneous
maximum of 10 NTU) is exceeded, until such time as the reclaimed water standards are met at the
generating facility. [15A NCAC 02U .0401(c)]
8. The Permittee shall provide notification to the public and/or employees about the use of reclaimed
water, and that reclaimed water is not intended for drinking. Such notification shall be provided to
employees in a language they can understand. [15A NCAC 02U .0501]
9. Reclaimed water used for activities other than land application shall not be used in a manner that causes
exposure to aerosols. [15A NCAC 02U ,0501(b)(6)]
10. Reclaimed water shall not be used for swimming pools, hot tubs, spas, or similar uses. [15A NCAC
02U .0501(d)]
11. Reclaimed water shall not be used for direct reuse as a potable water supply. [ 15A NCAC 02U
.0501(e)]
12. Bulk distribution operations shall meet the following:
a. 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 Permittee 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. Allowable and prohibited 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.
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b. 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 may 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. Tanks 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.
[ 15A NCAC 02U .0601 ]
IV. MONITORING AND REPORTING REOUHOMNTS
1. Any Division required monitoring (including groundwater, plant tissue, soil and surface water analyses)
necessary to ensure groundwater and surface water protection shall be established, and an acceptable
sampling reporting schedule shall be followed. [I5A NCAC 02T .0108(c)]
2. A Division certified Iaboratory shall conduct all laboratory analyses for the required effluent,
groundwater or surface water parameters. [ 15A NCAC 02H .08001
3. The Permittee shall monitor the reclaimed water from the generating facility at the frequencies and
locations for the parameters specified in Attachment A. [15A NCAC 02T .0108(c)]
4. The Permittee shall maintain adequate records tracking the amount of reclaimed water distributed to
each user and shall include the following information:
a. Date of reclaimed water distributed; and
b. Volume of reclaimed water distributed to each approved offsite user facility (monthly total).
Monthly tracking records for all users shall be summed and reported on Form NDMR (see Attachment
A) under parameter WQO1 (Flow, Reclaimed Water Distributed). This value shall represent the total
volume of reclaimed water distributed to all users for that month. [15A NCAC 02T .0108(c)]
The Permittee shall maintain adequate records for the bulk reclaimed water distribution program.
Records shall be maintained for a minimum of five years. These records shall include, but are not
necessarily limited to, the following information:
a. Date and time of bulk distribution event,
b. OWASA-issued bulk fill certification number,
c. Intended use of the bulk reclaimed water,
d. Number of gallons provided at each bulk distribution event, and
e. Total volume of bulk reclaimed water distributed each month.
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Monthly tracking records for bulk distribution shall be summed and reported Form NDMR (see
Attachment A) under parameter WQO1 (Flow, Reclaimed Water Distributed). This value shall
represent the total volume of reclaimed water distributed via bulk fill for that month. [ 15A NCAC 02T
.0108(c)]
6. A maintenance log shall be maintained at this facility. This log shall be maintained at the facility for a
period of no less than five years, and shall be made available to the Division upon request. At a
minimum, this log shall include:
a. Visual observations of treatment plant and plant site;
b. Date of calibration of flow measurement device(s);
c. Date of calibration of turbidimeter;
d. Record of preventative maintenance (e.g., changing/adjusting of equipment, pump and valve
maintenance, cross connection control, testing, inspections and cleanings, etc.; and
e. Record of all unpermitted releases of reclaimed water to surface water or land surface including
date of occurrence, estimated volume of release, cause, and corrective action taken.
[15A NCAC 02T .0108(b)(1)]
7. The Permittee shall develop and maintain a routine review and inspection program for offsite users of
reclaimed water. A log documenting user inspections shall be maintained for a minimum of five years,
and shall be made available to the Division upon request. At a minimum, this log shall include:
a. Visual observations of the reclaimed water user sites; and
b. Record of preventative maintenance (e.g., pump and valve maintenance, cross connection control,
etc.).
[ 15 A NCAC 02T .0108(b)(1)]
8. Three copies of all effluent monitoring -data and reclaimed water distribution data (as specified in
Conditions IV.3., IV.4., and IV.5.) shall be submitted on Form NDMR for each PPI listed in Attachment
A. Reporting forms shall be submitted on or before the last day of the following month. If no reclaimed
water distribution activities occurred during the monitoring month, monitoring reports documenting
the absence of the activity are still required to be submitted. All effluent monitoring data shall be
submitted to the following address: Division of Water Resources, Information Processing Unit, 1617
Mail Service Center, Raleigh, North Carolina, 27699-1617. [15A NCAC 02T .0105(l)]
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. Treatment of wastes abnormal in quantity or characteristic, including the known passage of a
hazardous substance.
b. Any process unit failure (e.g., mechanical, electrical, etc.), due to known or unknown reasons,
rendering the facility incapable of adequate wastewater treatment.
c. Any failure resulting in a discharge of reclaimed water directly to surface waters or any unpermitted
release of reclaimed water to land surface greater than or equal to 5,000 gallons. Unpermitted
releases less than 5,000 gallons to land surface shall be documented by the Permittee in accordance
with Condition IV.7.e. but do not require Regional Office notification.
d. Any time self -monitoring indicates the facilities permitted herein have gone out of compliance with
the limitations contained in this permit.
e. Ponding in or runoff from the reclaimed water utilization sites.
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V.
Any emergency requiring immediate reporting (e.g., discharges to surface waters, imminent failure of
a storage structure, etc.) outside normal business hours shall be reported to the Division's Emergency
Response personnel at telephone number [phone], [phone], or [phone]. Persons
reporting such occurrences by telephone shall also file a written report in letter form within five days
following first knowledge of the occurrence. This report shall outline the actions taken or proposed to
betaken to ensure the problem does not recur. [15A NCAC 02T .0108(b)(1)]
1. The Permittee shall provide adequate inspection and maintenance to ensure proper operation of the
reclaimed water generation and utilization facilities. [15A NCAC 02T .0108(b)]
2. The Permittee or their designee shall inspect the reclaimed water generation and utilization facilities to
prevent malfunction, facility deterioration and operator errors resulting in discharges, which may cause
the release of wastes to the environment, a threat to human health or a public nuisance. The Permittee
shall maintain an inspection log that includes, at a minimum, the date and time of inspection,
observations made, and any maintenance, repairs, or corrective actions taken. The Permittee shall
maintain this inspection log for a period of five years from the date of the inspection, and this log shall
be made available to the Division upon request. [ 15A NCAC 02T .0108(b)]
3. Any duly authorized Division representative may, upon presentation of credentials, enter and inspect
any property, premises or place on or related to the reclaimed water generation and utilization facilities
permitted herein at any reasonable time for the purpose of determining compliance with this permit;
may inspect or copy any records required to be maintained under the terms and conditions of this permit,
and may collect groundwater, surface water or leachate samples. [G.S. 143-215.11
4. The Permittee shall inspect the utilization sites of all reclaimed water users who obtain more than
10,000 gallons per day of bulk distributed reclaimed water, Permittee inspection of these bulk
distribution reclaimed water utilization sites does not need to exceed one inspection per quarter. The
Permittee shall maintain records of these inspections for at least five years, and shall make them
available to the Division upon request. [15A NCAC 02T .0108(b)]
VI. GENERAL CONDITIONS
1. Failure to comply with the conditions and limitations contained herein may subject the Permittee to an
enforcement action by the Division in accordance with North Carolina General Statutes 143-215.6A to
143-215.6C. [G.S. 143-215.6A to 143-215.6C]
2. This permit shall become voidable if the permitted facilities are not constructed in accordance with the
conditions of this permit, the Division approved plans and specifications, and other supporting
documentation. [15A NCAC 02T .0110]
3. This permit is effective only with respect to the nature and volume of wastes described in the permit
application, Division approved plans and specifications, and other supporting documentation. No
variances to applicable rules governing the construction or operation of the permitted facilities are
granted, unless specifically requested and approved in this permit pursuant to 15A NCAC 02T .0105(n).
[G.S. 142-215.11
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 jurisdictional government agencies
(e.g., local, state, and federal). 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; any requirements pertaining to wetlands under 15A
NCAC 02B .0200 and 02H .0500; National Pollutant Discharge Elimination System (NPDES)
requirements under 15A NCAC 02H .0100, and documentation of compliance with Article 21 Part 6
of Chapter 143 of the General Statutes. [ 15A NCAC 02T A 105(c)(6)]
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5. In the event the permitted facilities change ownership or the Permittee changes their name, a written
permit modification request shall be submitted to the Division. This request shall be made on official
Division forms, and shall include appropriate property ownership documentation and other supporting
documentation as necessary. The Permittee of record shall remain fully responsible for maintaining
and operating the facilities permitted herein until a permit is issued to the new owner. [15A NCAC
02T .0104]
6. The Permittee shall retain a set of Division approved plans and specifications for the life of the facilities
permitted herein. [ 15A NCAC 02T .0108(b)(1)]
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. [15A NCAC 02T
.01050)]
8. This permit is subject to revocation or unilateral modification upon 60 days notice from the Division
Director, in whole or part for the requirements listed in 15A NCAC 02T .0110. [ 15A NCAC 02T .0110]
Unless the Division Director grants a variance, expansion of the permitted facilities contained herein
shall not be granted if the Permittee exemplifies any of the criteria in 15A NCAC 02T .0120(b). [15A
NCAC 02T .0120]
10. The Permittee shall pay the annual fee within 30 days after being billed by the Division. Failure to pay
the annual fee accordingly shall be cause for the Division to revoke this permit. [15A NCAC 02T
.0105(e)(3)]
Permit issued this the 29' day of December 2016
NORTH CAROLINA ENVIRONMENTAL MANAGEMENT COMMISSION
Jay Zimmerman, P.G., Director
Division of Water Resources
By Authority of the Environmental Management Commission
Permit Number WQ0031506
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ATTACHMENT A - LIMITATIONS AND MONITORING REQUIREMENTS
PPI 001 — Reclaimed Water Generation System Effluent
Permit Number: WQ0031506 Version:2.0
EFFLUENT CHARACTERISTICS
EFFLUENT LIMITS
MONITORING REQUIREMENTS'
PCS
Code
Parameter Description
Units of
Measure
Monthly
Average
Monthly
Geometric Mean
Daily Minimum
Daily Maximum
Measurement
Frequency
q Y
Sample
Yp
Type
00310
BOD, 5-Day (20 °C)
mg/L
10
15
2 x Week
Composite
31616
Coliform, Fecal MF, M-FC Broth, 44.5 °C
#/100 mL
14
25
2 x Week
Grab
00610
Nitrogen, Ammonia Total (as N)
mg/L
4
6
2 x Week
Composite
00530
Solids, Total Suspended
mg/L
5
10
2 x Week
Composite
00076
Turbidity, HCH Turbidimeter
NTU
10
Continuous
Recorder
I . Please note that the monitoring requirements (i.e., measurement frequency and sample type) have been aligned with those requirements in Permit No. NC0025241. Accordingly, the Permittee
may report the same data for parameters BOD5 (00310), Fecal Coliform (31616), Ammonia (00610) and TSS (00530) as reported for Permit No. NCO025241 (i.e., no additional monitoring).
PPI 002 — Reclaimed Water Bulk Fill Station
EFFLUENT CHARACTERISTICS
EFFLUENT LIMITS
MONITORING REQUIREMENTS
PCS
Code
Parameter Description
p
Units of
Measure
Monthly
Average
Monthly
Geometric Mean
Daily Minimum
Daily Maximum
Measurement
Frequency
Sample
Type
WQ01
Flow, Reclaimed Water Distributed
Gallons
As distributed
Recorder
PPI 003 — Distributed Reclaimed Water
EFFLUENT CHARACTERISTICS
EFFLUENT LIMITS
MONITORING REQUIREMENTS
PCS
Code
parameter Descri tion
p
Units of
Measure
Monthly
Average
Monthly
Geometric Mean
Daily Minimum
Daily Maximum
Measurement
Frequency
Sample
Type
WQ01
Flow, Reclaimed Water Distributed
Gallons
As distributed
Recorder
I . The total flow for the year and the estimated monthly flow are to be included in the month of January report of the following year, cited under Condition IV.6. of this permit. Monthly flows may
be estimated based on water meter readings and annual flow totals.
WQ0031506 Version 2.0 Attachment A Page 1 of 1

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ATTACHMENT B — APPROVED RECLAIMED WATER USES
Orange Water and Sewer Authority — Mason Farm WWTP
Permit Number: WQ0031506 Version: 2.0
Site ID
Facility Name
Owner
County
User Permit Number
Latitude
Longitude
Approved Uses
1
UNC-CH Chiller Plants
The University p el Hill North
Carolina at Chapel
Orange
WQ0031506
35.9016670
-79.052501°
Cooling tower water
2
UNC-CH Reclaimed Water Program
The University of North
Carolina at Chapel Hill
Orange
WQ0034219
35.9072220
-79.0480560
Irrigation and toilet flushing
3
St. Thomas More Catholic Community
Carlos Lima
Orange
WQ0034817
35,9052780
-79,0322220
Irrigation and toilet flushing
Notes:
1. Utilization records for these sites are not required to be reported on Form NDAR-1.
2. Approved uses include general use of reclaimed water for any activity allowed under 15A NCAC 02U and that are listed in the University of North Carolina at Chapel Hill's reclaimed water use
Permit No. WQ0034219.
WQ0031506 Version 2.0 Attachment B Page 1 of 1

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ATTACHMENT D — APPROVED BULK FILL RECLAIMED WATER USES
Orange Water and Sewer Authority — Mason Farm WWTP
Permit Number: WQ0031506 Version: 2.0
APPROVED USES
ADDITIONAL REQUIREMENTS AND COMMENTS
For use by Permittee or Permittee affiliations (i.e., municipal employees, or
contracted service providers).'
Fire fighting and fire extinguishing
Must meet Public Water Supply requirements
Reclaimed water distribution line flushing and pressure testing
Provided the water is returned to the sanitary sewer, or used for other approved reclaimed
water uses after testing.
Vehicle and equipment washing
Provided that no ponding or run-off of the reclaimed water occurs.
For use by certified bulk reclaimed water users.
Concrete cutting
Decorative ponds and fountains that drain to sanitary sewer systems
Hydro -seeding and fertilizer mixing
Industrial and commercial cooling water or boiler blow down water
Provided that cooling water or boiler blow down water is disposed of according to any
necessary dis osal permit.
Industrial and commercial fire prevention systems where there are separate
non- otable plumbing lines
Irrigation of public and private landscapes and turf
Make-up water for brine slurry or similar
Brine slurry to be applied to roads to prevent freezing.
Irrigation of food chain crops
Provided that all conditions of 15A NCAC 02U .1401 are met.
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.
Non -potable processes such as asphalt reclamation, concrete production and
compost production
Must meet compost permit requirements.
Sewer cleaning
Soil compaction and dust suppression
May include irrigation to clay or synthetic clay tennis courts, or similar.
Street sweeping and washing
Subsurface Directional Boring
Does not include borings into bedrock or installation of any wells subject to 15A NCAC 02C
- Well 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.
1. All users shall complete educational training and receive certification prior to receiving bulk reclaimed water.
WQ0031506 Version 2.0 Attachment D Page 1 of 1