WQ0031506_Final Permit_20110921

7- -A
CDEN
North Carolina Department of Environment and Natural Resources
Beverly Eaves Perdue
Governor
Mr. Ed Kerwin - Executive Director
Orange Water & Sewer Authority
400 Jones Ferry Rd.
Carrboro, NC, 27510
Dear Mr. Kerwin:
Division of Water Quality
Coleen H. Sullins
Director
September 21, 2011
Dee Freeman
Secretary
Subject: Permit No. WQ0031506
Mason Farm WWTP
Conjunctive Reclaimed
Water Utilization System
Orange County
In accordance with your permit minor modification request received July 25, 2011, we are
forwarding herewith Permit No. WQ0031506 dated September 21, 2011, to Orange Water & Sewer
Authority for the continued operation of the subject wastewater treatment and conjunctive reclaimed
water utilization system.
Modifications to the subject permit are as follows:
➢ Your permit's format has been updated to be consistent with the most current reclaimed water
permit template.
➢ Rule references have been updated pursuant to the new 15A NCAC 02U rules which became
effective on June 18, 2011.
➢ Attachment A has been updated in order to provide consistency with current monitoring
policies (details below).
➢ Attachment B has been updated to include new uses of reclaimed water at the University of
North Carolina at Chapel Hill and to include St. Thomas More Catholic Community as an
approved user of reclaimed water.
➢ Attachment C has been added in order to provide a list of approved uses for reclaimed water
distributed via the bulk fill station.
➢ For your convenience a customized electronic copy of your facility's NDMR forms will be
available for download at the following web address:
htt-p:////'poital.nedenr-or iweb/w /a s/lau/re ortin(-Y.
Please note that on August 5, 2009, Session Law 2009-406, entitled "An Act to Extend Certain
Government Approvals Affecting the Development of Real Property Within the State," was enacted by
the General Assembly and signed into law. The Act, known as the Permit Extension Act of 2009, extends
the expiration date of certain government approvals and permits. As part of the past legislative session
(S.L. 2010-177), HB 683 - Permit Extensions extended the Act by another year. Permit WQ0031506 falls
within the scope of this Act and is therefore being extended until October 31, 2016. A renewal
application must still be submitted six months in advance of the extended expiration date.
AQUIFER PROTECTION SECTION
1636 Vail Service Center, Raleigh, North Carolina 27699-1636
l.ocaiion: 2728 Capital Bou evard Raieirl. Nortt,'arc, na 2760-
011e
Phone: [phone], FAX 1: 915-715-05K; F�,' 2: Sig-71 i-oD Cus':.^ier Service 1-;77-021- 74: �F_
Vn#e,cet www.ncwate uatliv.oro ofth —" Eis

Mr. Ed Kerwin
September 21, 2011
Page 2 of 2
This permit shall be effective from the date of issuance until October 31, 2016, shall void Permit
No. WQ0031506 issued February 6, 2009, and shall be subject to the conditions and limitations as
specified therein. Please pay particular attention to the monitoring requirements listed in Attachment B
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 pay special attention to the following Items:
➢ Previous conditions I.1., I.2., and 1.3. have been removed because these requirements have
been satisfied.
➢ Monitoring requirements in Attachment A have been updated as follows:
• The requirement for monitoring for chloride has been removed. This parameter
is not typically monitored for conjunctive reclaimed water facilities.
• The frequency for ammonia monitoring has been reduced from 5 X week to once
per week in order to better match sampling for NPDES permit NCO 025241.
• The existing requirements for monitoring flow for bulk fill events has been
moved to a separate PPI (002).
➢ Attachment B has been updated as follows:
• St. Thomas Moore Catholic Community has been added as an approved user of
reclaimed water.
• Approved uses for The University of North Carolina at Chapel Hill have been
expanded to include irrigation and toilet flushing.
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 matter, please contact Lori Montgomery at
[phone] or [e-mail].
Sincerely,
�, Cole �EISullins
cc: Orange County Health Department
Raleigh Regional Office, Aquifer Protection Section
Permit File WQ0031506
Notebook File WQ0031506

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
I •: 10.
continued operation of a 4.67 million -gallon per day (MGD) reclaimed water storage and distribution
system consisting of:
• approximately 1,280 feet of 24-inch reclaimed water distribution main 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) 2,160 gallon per minute (GPM) reclaimed water distribution pumps;
• two (2) 595 GPM reclaimed water 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;
to serve the user facilities listed in the most recently issued Attachment B of this permit; and
a one reclaimed water bulk frll station located at Mason Farm WWTP;
with no discharge of wastes to surface waters, pursuant to the application received July 25, 2011 and in
conformity with the project plans, 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, 2016, shall void Permit No.
WQ0031506 issued February 6, 2009 and shall be subject to the following specified conditions and
limitations:
WQ0031506 Version 1.5 Shell Version 101229 Page 1 of 9

L SCHEDULES
1. 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 Rule 15A
NCAC 02T .0105(d) requires an updated site map to be submitted with the permit renewal
application.
II. PERFORMANCE STANDARDS
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. 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 cessation of reclaimed water distribution activities.
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.
3. Effluent limitations shall not exceed those specified in Attachment A.
4. Reclaimed water may only be distributed to offsite users listed in Attachment B. A permit
modification will be required in order to add any additional offsite users. The Permittee shall
maintain an active Operational Agreement with the owner of all offsite user sites listed in Attachment
B.
5. Reclaimed water distributed through bulk fill operations shall be limited to the uses specified in
Attachment C.
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 (NC0025241), and the Permittee shall
continue to comply with all conditions provided for therein.
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. Wherc 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. AlI 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.
WQ0031506 Version 1.5 Shell Version 101229 Page 2 of 8

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 non -potable.
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 non -potable.
S. The Permittee shall maintain an active dross -connection control program to ensure that there are no
direct cross connections between the reclaimed water system and the potable water system.
9. 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.
10. 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 18C, but in no
case shall they be less than 25 feet from a private well or 50 feet from a public well.
11. Reclaimed water distribution lines shall meet the separation distances to sewer lines in accordance
with Rule .0305 of Subchapter 02T.
12. Compliance and Review Boundaries for the offsite reclaimed water utilization areas have not been
established, Any exceedance of groundwater standards shall require action in accordance with 15A
NCAC 02L .0106.
13. 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 storage and treatment 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
III. OPERATION AND MAINTENANCE RE UMEMENTS
1. The facilities shall be properly maintained and operated at all tinges. 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 02U .0801, which at a minimum shall include operational
functions, maintenance schedules, safety measures and a spill response plan.
WQ0031506 Version 1.5 Shell Version 101229 Page 3 of 8

2. 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.
Only reclaimed water from the Mason Farm WWTP shall be distributed to the sites listed in
Attachment B or distributed through the bulk fill station.
4. 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. Public
access to the wastewater treatment facilities shall be prohibited.
5. An education program shall be developed and implemented to inform reclaimed water users of the
proper use of reclaimed water. Educational material shall be provided to all facilities provided with
reclaimed water, and these materials shall be maintained consistent with the reclaimed water uses.
All educational materials shall be made available to the Division upon request.
6. An education program shall be developed and implemented to inform OWASA employees about the
proper use of reclaimed water.
7. OWASA shall develop and maintain a program of routine review and inspection of reclaimed water
users.
8. For use of the bulk fill station the following requirements must be met:
a. The Permittee shall develop and implement an operation and maintenance plan which includes
but is not limited to the following
L 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 compliance with reclaimed water quality standards will be ensured at the time of use.
b. Use of reclaimed water for vehicle washing shall be conducted in a manner to ensure no surface
runoff.
c. 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,
WQ0031506 Version 1.5 Shell Version 101229 Page 4 of 8

d. Tank tracks 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.
IV. MONITORING AND REPORTING REQUIREMENTS
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.
2. Per 15A NCAC 02H .0800, a Division certified laboratory shall conduct all laboratory analyses for
the required effluent, groundwater or surface water parameters.
3. Flow distributed through the reclaimed water distribution system and through the bulk fill station
shall be continuously monitored and daily flow values shall be reported on Form NDMR.
The Permittee shall maintain an appropriate flow measurement device to ensure the accuracy and
reliability of flow measurement consistent with accepted engineering and scientific practices.
Selected flow measurement devices shall be capable of measuring flows with a maximum deviation
of less than ten percent from true flow; accurately calibrated at a minimum of once per year; and
maintained to ensure the accuracy of measurements is consistent with the selected device's accepted
capability. The Permittee shall maintain records of flow measurement device calibration on file for a
period of at least five years. At a minimum, documentation shall include:
a. Date of flow measurement device calibration,
b. Name of person performing calibration, and
c. Percent from true flow.
4. The Permittee shall monitor the effluent from the subject facilities at the frequencies and locations for
the parameters specified in Attachment A.
The Permittee shall maintain adequate records tracking the amount of reclaimed water distributed to
offsite users. At a minimum., these records shall include the following information for each user site
listed in Attachment B:
a. Date of distribution or utilization;
b. Volume of reclaimed water distributed or utilized (i.e., monthly total); and
c. Weather conditions (for irrigation sites owned or operated by the Permittee only).
WQ0031506 Version 1.5 Shell Version 101229 Page 5 of 8

The Permittee shall maintain adequate records to track the amount of reclaimed water distributed
through the bulb fill station. At a minimum, these records shall include:
a. Date and time of bulk distribution event,
b. Name and drivers license number of truck operator,
c. OWASA-issued bulk fill certification number,
d. Name of end customer,
e. Intended use of the built reclaimed water,
f. Number of gallons provided at each bulls distribution event,
g. Turbidity measurement results, and
7. Total volume of bulk reclaimed water distributed each month. 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; and
c. Date of calibration of the portable turbidity meter.
8. Three copies of all monitoring data (as specified in Conditions IV.3. and IVA.) on Form NDMR for
each PPI 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
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 facility resulting in the treatment of significant amounts of wastes that is
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 facility failure resulting in a by-pass directly to receiving surface waters.
d. Any time self -monitoring indicates the facility has gone out of compliance with its permit
limitations.
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 be taken to ensure the problem does not recur,
WQ0031506 Version 1.5 Shell Version 101229 Page 6 of 8

V. INSPECTIONS
1. The Permittee shall provide adequate inspection and maintenance to ensure proper operation of the
wastewater treatment and utilization facilities. A general observation of the entire reclaimed water
distribution system shall be conducted at least once per year.
The Permittee or their designee shall inspect the wastewater treatment and utilization facilities to
prevent malfunctions, 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.
3. Any duly authorized Division representative may, upon presentation of credentials, enter and inspect
any property, premises or place on or related to the wastewater treatment 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.
4. In accordance with 15A NCAC 02U .0501, the Permittee shall inspect the utilization sites of all
reclaimed water users who obtain more than 25,000 gallons per day of bulk distributed reclaimed
water. Permittee inspection of these bulb 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.
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.
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.
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).
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; and documentation of compliance with Article 21 Part 6 of
Chapter 143 of the General Statutes.
5. In the event the permitted facilities change ownership or the Permittee changes their name, a formal
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.
WQ0031506 Version 1.5 Shell Version 101229 Page 7 of

6. The Permittee shall retain a set of Division 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 pursuant to 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.
9. 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).
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 revolve this permit pursuant to 15A
NCAC 02T .0105(e)(3).
Permit issued this the 215t day of September, 2011
NORTH CAROLINA ENVIRONMENTAL MANAGEMENT COMMISSION
lee . Sullins, Director
Division of Water Quality
By Authority of the Environmental Management Commission
Permit Number WQ003I506
WQ0031506 Version 1.5 Shell Version 101229 Page 8 of 8

ATTACHMENT A - LIMITATIONS AND MONITORING REQUIREMENTS
PPI 001— Reclaimed Water Distribution
Permit Number: WQ0031506 Version: 1.5
EFFLUENT CHARACTERISTICS
EFFLUENT LIMITS
MONITORING REQUIREMENTS'
PCS
Code
parameter Description
Monthly Average
Monthly Geometric
Mean
Daily Minimum
Daily MaximumFrequency
Measurement
2
Sample
Type
50050
Flow, in conduit or thru treatment plant
Continuous
Recorder
00076
Turbidity, HCII Turbidimeter
10
NfU
Continuous
Recorder
80082
BOD. Carbonaceous 05 Day, 20C
10
mg/1
15
rmg/l
5 X week
Composite
00530
Solids,'I'otal Suspended
5
mg/1
10
mg/I
5 X week
Composite
31616
Coliform, Fecal MF, M-FC Broth,44.5C
14
#/I00 ml
25
#/100 utl
5 X week
Grab
00400
p1l
6.0
SAL
9.0
S.U.
5 X week
Grab
00610
Nitrogen, Ammonia Total (as N)
4
mg/l
6
mg/1
Weekly
Composite
00630
Nitrite plus Nitratc Total I UET. (as N)
Weekly
Composite
I. F,flluent sampling location for all parameters except turbidity and fecal coliform shall be sampled at the effluent sampling point associated with NPDES permit NCO025241. Sampling for
turbidity and fecal coliform shall be conducted at the point of entry where the turbidity meter is located.
2. Sampling frequencies are set to be consistent with NPDES permit N00025241. Sampling results associated with the NPDES permit requirements maybe used for reporting requirements for this
permit as long as the sampling locations remain the same in both permits.
PPI 002 — Bulk Fill Station
EFFLUENT CHARACTERISTICS
EFFLUENT LIMITS
MONITORINGREQUIREMENTS
PCS
Parameter Description
Monthly Average
Monthly Geometric
Daily Minimum
Daily Maximum
Measurement
Measurement
Sample
Code
Mean
Type
50051)
Flow, in conduit or thru treatment plant
GPD
As distributed 1
Recorder
' Monthly average flow shall be calculated and reported based on total flow for the month divided by the number of days reclaimed water was distributed during the month.
WQ0031506 Version 1.5 Attachment A Page 1 oft

THIS PAGE BLAND

ATTACHMENT B - APPROVED RECLAIMED WATER USE SITES Permit Number: WQ0031506 Version: 1.5
Orange Water and Sewer Authority -- Mason Farm WWTP
Approved Users for Off -Site Distribution:
Site
ID
facility
Owner
County
Permit Number
Latitude
Longitude
Approved Uses
I
Cooling Towers at UNC Chiller Plants'
The University of North Carolina at
Orange
WQ0031506
35"54'06"
7T03'09"
Cooling tower makeup
Chapel Hill
2
Various campus facilities at UNC-Chapel 1 till
The University of North Carolina at
Orange
WQ0034219
35°54'26"
79002'53"
Landscape irrigation, athletic field
2
Chapel Hill
irrigation, toilet flushing, etc.
3
St. Thomas More Catholic Community
Carlos Lima
Orange
WQ0034817
35°5CIT'
7900P56"
Athletic field irrigation and toilet flushing
Estimated average flows distributed to each chiller plant are:
Toinkins Chiller Plant= 116,00.0 GPD
South Chiller Plant = 368,000 GPD
Past Chiller Plant = 90,000 GPI)
UNC hospitals Chiller Plant = 188,000 GPb
North Chiller Plant = 252,000 GPI)
Cobb (Northeast) Chiller Plant = 194,000 GPD
'` Approved uses include general use of reclaimed water for any activity allowed under 15A NCAC 02U and listed in the University of North Carolina at Chapel Hills reclaimed water use Permit
No. WQ0034219.
WQ0031506 Version 1.5 Attachment I3 Page I of I

THIS PAGE BLANK

ATTACHMENT C — APPROVED SULK FILL RECLAIMED WATER USES
Permit Number: WQ0031506 Version: 1.5
W.,d. .—I C—aw A„flanr:t.r._ Mavnn Farm WWTP
Certification Date — September 21, 201.1
V1w1a c rr uit.a uuaa sue.. rr ..a c
APPROVED USES
ADDITIONAL REQUIREMENTS AND COMMENTS
For use by Permittee or permitee affiliations (i.e municipal employees, or
contracted serviceproviders).'
Fire fighting and fire extinguishing
Must meet Public Water Supply requirements
Provided the water is returned to the sanitary sewer, or used for other approved reclaimed
Reclaimed water distribution line pressure testing
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. a
Concrete cutting
Decorative porids and fountains that drain to sanitary sewer systems
Hydro -seeding and fertilizer mixing
Provided that cooling water or boiler blow down water is disposed of according to any
Industrial and commercial coaling water or boiler blow down water
necessary disposal permit.
Industrial and commercial fire prevention systems where there are separate
non -potable 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.
Use of reclaimed water does not exempt user from meeting the use and disposal
Make-up water for preparation of pesticide solutions or similar
requirements of the created solution.
Nan -potable processes such as asphalt reclamation, concrete production and
Must meet compost permit requirements.
compost production
Sewer cleaning
Soil compaction and dust suppression
May including irrigation to clay or synthetic clay tennis courts, or similar.
Street sweeping (not streetwashing)
wstreet
Does not include borings into bedrock or installation of any wells subject to 15A NCAC 2C
Subsurface Directional Boring
- Well Construction Regulations.
Provided that dual disinfection with UV and chlorination is provided. , and that no pottding
Vehicle washing and power washing
or run-off of the reclaimed water occurs.
' All users shall complete educational training and receive certification prior to receiving bulk reclaimed water.
WQ0031506 Version 1.5 Attachment C Page I of 1