NC0082082_Complete File_20040414

le 4J Michael F. Easley, Governor
William G. Ross Jr., Secretary
North Carolina Department of Environment and Natural Resources
S r Alan W. Klimek P. E. Director
'y Division of Water Quality
- .� Coleen H. Sullins, Deputy Director
' Division of Water Quality
April 14, 2004
Mr. Ronnie Overton
The University of North Carolina at Greensboro
PO BOX 26170
GREENSBORO NC 27402-6170
Subject: Rescission of NPDES Permit
Permit Number NCO082082
UNC-G WWTP
Guilford County
Dear Mr. Overton:
Reference is made to your request for rescission of the subject NPDES Permit. The staff
of the Winston-Salem Regional Office has confirmed that this permit is no longer required.
Therefore, in accordance with your request, NPDES Permit NCO082082 is rescinded, effective
immediately.
If in the future you wish to again discharge wastewater to the State's surface waters, you
must first apply for and receive a new NPDES Permit. Operating a facility without a valid
NPDES Permit will subject the responsible party to a civil penalty of up to $25,000 per day.
If you have questions about this matter, please contact Karen Rust at [phone],
extension 361 or the Water Quality staff in our Winston-Salem Regional Office at (336) 771-
4600.
Sincerely,
IAlan W. Klimek, P.E.
cc: Winston-Salem Regional Office w/attachment
NPDES Unit t
Point Source Compliance - w/attachment
Central Files - w/attachment
Fran McPherson, DWQ Budget Office
N. C. Division of Water Quality 1617 Mail Service Center Raleigh, North Carolina 27699-1617 [phone]
to
Customer Service
1-877-623-6748

'UREENSBORO
Ronnie L. Overton, PE
Energy Engineer
Physical Plant
Sink Building
O Oakland Are.. PO Bm 26170. Greensboro. NC 27402-6170
Office(3361256-1464 'Far(336)3344026
Email' room :Quenon trunc@.eda
March 25, 2004
UVERSITY OF NORTH CAROUNA
; EENSBORO
North Carolina Department of Environment and Natural Resources
Water Quality
NPDES Unit
1617 Mail Service Center
Raleigh, North Carolina 27699-1617
Attention: Mr. Dave Goodrich
Reference: NPDES Permit NCO082082
The University of North Carolina at Greensboro
Dear Mr. Goodrich:
�ll
fi
01,; 0
The purpose of this letter is to inform the North Carolina Department of Environment and
Natural Resources that UNCG has removed the steam plant boiler blowdown wastewater
discharge from a storm sewer discharge to a sanitary sewer system. Please resend our Permit
No. NC0082082.
If you have any questions or require additional information related to this modification, please
call me at [phone].
Respectfully submitted,
Ronnie L. Overton, P.E.
Energy Engineer
Boo Oakland Ave., UNCG, PO Box 26170, Greensboro, NC 27402-6170
(336) 334-56B4 • Fax [phone]

THEUNNERS)TYOFNORM CAROLU A
ljREENSBORO
Department of Physical Plant
March 25, 2004
North Carolina Department of Environment and Natural Resources
Water Quality
NPDES Unit
1617 Mail Service Center
Raleigh, North Carolina 27699-1617
Attention: Mr. Dave Goodrich
Reference: NPDES Permit NCO082082
The University of North Carolina at Greensboro 100? 0 IJ j
Dear Mr. Goodrich:
The purpose of this letter is to inform the North Carolina Department of Environment and
Natural Resources that UNCG has removed the steam plant boiler blowdown wastewater
discharge from a storm sewer discharge to a sanitary sewer system. Please resend our Permit
No. NC0082082.
If you have any questions or require additional information related to this modification, please
call me at [phone].
Respectfully submitted,
Ronnie L. Overton, P.E.
Energy Engineer
800 Oakland Ave., UNCG, PO Box 26170, Greensboro, NC 27402-6170
[phone] • Fax [phone]

Mr. Anthony R. Schallert
UNC-Greensboro
P.O. Box 26170
Greensboro, North Carolina
Dear Mr. Schallert:
Michael F. Easley
Governor
AQWilliam G. Ross, Jr., Secretary
NCDENR North Carolina Department of Environment and Natural Resources
Kerr T. Stevens, Director
Division of Water Quality
27402-6170
April 27, 2001
Subject: Issuance of NPDES Permit NCO082082
UNC-Greensboro Physical Plant
Guilford County
Division personnel have reviewed and approved your application for renewal of the subject permit. Accordingly, we are
forwarding the attached NPDES discharge permit. This permit is issued pursuant to the requirements of North Carolina General
Statute 143-215.1 and the Memorandum of Agreement between North Carolina and the U.S. Environmental Protection Agency
dated May 9, 1994 (or as subsequently amended). The limits and requirements in this permit will take effect on July 1, 2001.
Please be aware that North Buffalo Creek and South Buffalo Creek are listed as impaired streams on North Carolina's 303(d)
Est. This means that the streams do not meet all water quality standards. The Division is working toward the improvement of
water quality in North Buffalo Creek and South Buffalo Creek. If the Division's current initiatives do not result in improved
water quality, removal of discharges to North Buffalo Creek and South Buffalo Creek may be necessary for the health of the
stream. Although the Division believes major nutrient discharges and urban runoff are the primary causes of degradation to
North Buffalo Creek and South Buffalo Creek, we will continue to monitor compliance at your facility. If noncompliance with
your pemvt's effluent limits is shown to be a direct cause of stream degradation, the Division will recommend removal of your
facility's discharge.
If any parts, measurement frequencies or sampling requirements contained in this permit are unacceptable to you, you have
the right to an adjudicatory hearing upon written request within thirty (30) days following receipt of this letter. 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, North Carolina 27699-6714). Unless such demand is
made, this decision shall be final and binding.
Please note that this permit is not transferable except after notice to the Division. The Division may require modification or
revocation and reissuance of the permit. This permit does not affect the legal requirements to obtain other permits which may be
required by the Division of Water Quality or permits required by the Division of Land Resources, the Coastal Area Management
Act or any other Federal or Local governmental permit that may be required.
If you have any questions concerning this permit, please contact Charles Weaver at telephone number [phone],
extension 511.
cc: Central Files
Winston-Salem Regional Office/Watcr Quality Section
NPDES Unit
Point Source Compliance Enforcement Unit
N. C. Division of Water Quality / NPDES Unit
1617 Mail Service Center, Raleigh, NC 27699-1617
Internet: h2o.enr.state.nc.us
Sincerely,
ORIGINAL SIGNED BY
SUSAN A. WILSON
Kerr T. Stevens
Phone: [phone]
fax: [phone]
DENR Customer Service Center. 1 800 623-7748

Permit NCO082082
STATE OF NORTH CAROLINA
DEPARTMENT OF ENVIRONMENT AND NATURAL RESOURCES
DIVISION OF WATER QUALITY
PERMIT
TO DISCHARGE WASTEWATER UNDER THE
NATIONAL POLLUTANT DISCHARGE ELIMINATION SYSTEM
In compliance with the provision of North Carolina General Statute 143-215.1, other lawful
standards and regulations promulgated and adopted by the North Carolina Environmental
Management Commission, and the Federal Water Pollution Control Act, as amended, the
The University of North Carolina at Greensboro
is hereby authorized to discharge wastewater from a facility located at the
UNC-Greensboro Physical Plant
Greensboro
Guilford County
to receiving waters designated as North Buffalo Creek (outfalls 001-020) and South
Buffalo Creek (outfall 021) in the Cape Fear River Basin
in accordance with effluent limitations, monitoring requirements, and other
conditions set forth in Parts I, II, III and IV hereof.
This permit shall become effective July 1, 2001.
This permit and authorization to discharge shall expire at midnight on June 30, 2006.
Signed this day April 27, 2001.
ORIGINAL SIGNED BY
SUSAN A. WILSON
Kerr T. Stevens, Director
Division of Water Quality
By Authority of the Environmental Management Commission

Permit NC0082082
A. (1.) EFFLUENT LIMITATIONS AND MONITORING REQUIREMENTS (001-020)
During the period beginning on the effective date of this permit and lasting until expiration, the Permittee is
authorized to discharge non -contact cooling water from outfalls 001-020. Such discharges shall be limited
and monitored by the Permittee as specified below:
EFFLUENT
CHARACTERISTICS
LIMITS_:
MONITORING REQUIREMENTS
Monthly
Average
Daily
Maximum
Measurement
-.-Frequency
Sample Type
Sample Locationi
Flow
Monthly
Instantaneous
Effluent
Tem erature2
Monthly
Grab
Effluent & Downstream
Total Residual Chlorine3
MonthlyGrab
Effluent
H4
Monthly
Grab
Effluent
Footnotes:
1. Downstream = downstream of all outfalls (001-020) prior to the confluence with North Buffalo Creek.
2. The temperature of the effluent shall not cause the temperature in the receiving stream to increase by more
than 2.8°. In no case shall the temperature of the effluent cause the ambient water temperature to exceed
32.0°C.
3. Monitoring is required only when chlorine is added to the cooling water.
4. The pH shall not be less than 6.0 standard units nor greater than 9.0 standard units
There shall be no discharge of floating solids or visible foam in other than trace amounts.
A. (2.) EFFLUENT LIMITATIONS AND MONITORING REQUIREMENTS (021)
During the period beginning on the effective date of this permit and lasting until expiration, the Permittee is
authorized to discharge boiler blowdown from outfall 021. Such discharges shall be limited and monitored
by the Permittee as specified below:
EFFLUENT
CHARACTERISTICS
LIMITS
MONITORING REQUIREMENTS
Monthly
Average
Daily
Maximum
Measurement
Frequency
Sample Type
SampleLocationt
Flow
Monthly
Instantaneous
Effluent
Tem erature2
Monthly
Grab
Effluent & Downstream
Total Residual Chlorine3
MonthlyGrab
Effluent
H^
Monthly
Grab
Effluent
Footnotes:
1. Downstream = downstream above the railroad crossing.
2. The temperature of the effluent shall not cause the temperature in the receiving stream to increase by more
than 2.8°. In no case shall the temperature of the effluent cause the ambient water temperature to exceed
32.0°C.
3. Monitoring is required only when chlorine is added to the cooling water.
4. The pH shall not be less than 6.0 standard units nor greater than 9.0 standard units
There shall be no discharge of floating solids or visible foam in other than trace amounts.

Permit NC0082082
A. (3.) BIOCIDE CONDITION
There shall be no chromium zinc or copper added to the treatment system except as
pre -approved additives to biocidal compounds.
The permittee shall obtain approval from the Division's Aquatic Toxicology Unit prior to the
use of any biocide (not previously approved by the Division) in the effluent discharged
under this permit. Approval for use of any biocide not previously approved should be
requested at least 90 days in advance of any planned usage.
Contact the Aquatic Toxicology Unit for detailed instructions on requesting approval of
biocides:
NC DENR / DWQ / Aquatic Toxicology Unit
1621 Mail Service Center
Raleigh, North Carolina 27699-1621

News & Record
North Carolina, Guilford County
1
Published by
News & Record, Inc.
Greensboro, North Carolina
Affidavit of Publication
Before the undersigned, a Notary Public of said County and State, duly commissioned, qualified and authorized by law to administer oaths,
personally appeared Anna Gaither who being first duly sworn, deposed and says:
3/Rro1
1. That she is the Publisher's Representative of the Greensboro News & Record, Inc. a corporation, engaged in the publication of newspapers
known as "News & Record", published, issued and entered as second class mail in the City of Greensboro in said County and State.
2. That she is authorized to make this affidavit and sworn statement; that the notice or other legal advertisement, a copy of which is attached
hereto, was published in the News & Record on the above listed dates.
3. That the said newspaper (or newspapers) in which such notice, paper, document, or legal advertisement was published was, at the time of
each and every such publication, a newspaper meeting all of the requirements and qualifications of Section 1-597 of the General Statutes of
North Carolina and was a qualified newspaper within the meaning of Section 1-597 of the enual S tes of North Carolina
Publisher's Representative
Sworn to and subscribed before me, this C Ik day of D QP4 1 . 2001
Notary Public
My commission expires: August 23, 2005
Ad a Date Edition Class PO
VALERIE McNEIL
NOTARY PUBLIC
GUILFORD COUNTY, NC
Commission Expires 8.23.2005
Ad Copy
NCDENR/DWQ/NPES 1117382 03/09/01 News &Record 400 PUBLIC NOTICE STATE

Ad # 1117382 Date 03/07/2001 Time 3:06 PM
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THE UNIVERSITY OF NORTH CAROLINA
GREENSBORO
Dspsrbnsnt of Physical Plant
FROM: Anthony Schallert
Utilities Engineer
TO: Charles H. Weaver, Jr.
NC DENR / Water Quality / NPDES Unit
1617 Mail Service Center
Raleigh, NC 27699-1617
DATE: 12/12/00
SUBJ: NPDES Permit NCO082082 Renewal
DEC 15 2=n U
Attached is the application for renewal of the NPDES permit in triplicate. There have been no
changes in the discharges since the last permit was issued.
Because this facility only produces boiler water and cooling tower blow downs, which contain no
suspended solids, we do not have a sludge management program.
If you have any questions or if additional information is required, please contact me at (336) 256-
0434.
Anthony . Schallert
Utilities Engineer
800 Oakland Ave., UNCG, PO Box 26170, Greensboro, NC 27402-6170
[phone] • FAX [phone]

State of North Carolina
Department of Environment
and Natural Resources
Division of Water Quality
James B. Hunt, Jr., Governor
Bill Holman, Secretary
Kerr T. Stevens, Director
August 18, 2000
Mr. Anthony Schallert
UNC-Greensboro
1000 Spring Garden St.
Greensboro, NC 27412
���
NCDENR
NORTH CAROLINA DEPARTMENT OF
ENVIRONMENT AND NATURAL RESOURCES
Subject: NPDES Permit Modification
Permit NCO082082
UNGGreensboro
Guilford County
Dear Mr. Schallert:
The Division is beginning the cycle of permit renewals for the Cape Fear river basin. An examination of the Cape
Fear basin plan and the NPDES permit schedule has revealed that the existing expiration dates in Cape Fear NPDES
permits do not coincide with the revised permit expiration dates for the basin. This discrepancy could create unnecessary
delays in the processing of over 200 permit renewals. Accordingly, the Division is changing the permit expiration dates for
NPDES permits in the Cape Fear river basin.
This permit modification changes the expiration date of the subject permit in subbasin 30602 to June 30, 2001. Please
find enclosed the revised permit cover page. Insert the new cover page into your permit and discard the old page. All
other terms and conditions contained in the original permit remain unchanged and in full effect. This permit modification
is issued under the requirements of North Carolina General Statutes 143-215.1 and the Memorandum of Agreement
between North Carolina and the U. S. Environmental Protection Agency.
In accordance with the modification of the permit expiration date, the new due date for your renewal application is
January 1, 2001. Renewal application forms will be sent to you approximately 6-8 weeks in advance of the new due date
or you may download the forms from the NPDES web site at http://h2o.enr.state.nc.us/NPDES/documents.htmi.
You will need to download Short Form C. If you have already submitted a permit renewal form, there is no need to
submit any other forms to the Division; the application will be processed during the renewal period for your subbasin.
If any part of this permit modification are unacceptable to you, you have the right to an adjudicatory hearing upon
written request within thirty (30) days following receipt of this letter. This request must be a written petition conforming
to Chapter 150B of the North Carolina General Statutes, filed with the Office of Administrative Hearings (6714 Mail
Service Center, Raleigh, North Carolina 27699-6714). Unless such demand is made, this decision shall be final and binding.
If you have any questions concerning this permit modification, please contact Natalie Sierra at [phone],
extension 551.
Sincerely,
rA� I/% ajv�
Kerr T. Stevens
cc: Central Files
Winston-Salem Regional Office, Water Quality Section
t o mpliance Enforcement Unit
1617 Mail Service Center, Raleigh, North Carolina 27699-1617 Telephone [phone] FAX [phone]
An Equal Opportunity Affirmative Action Employer Visit us ON THE INTERNET @ http://h2o.enr.state.nc.us/NPDES

Permit NCO082082
STATE OF NORTH CAROLINA
DEPARTMENT OF ENVIRONMENT AND NATURAL RESOURCES
DIVISION OF WATER QUALITY
PERMIT
TO DISCHARGE WASTEWATER UNDER THE
NATIONAL POLLUTANT DISCHARGE ELIMINATION SYSTEM
In compliance with the provision of North Carolina General Statute 143-215.1, other lawful
standards and regulations promulgated and adopted by the North Carolina Environmental
Management Commission, and the Federal Water Pollution Control Act, as amended,
UNC-Greensboro
is hereby authorized to discharge wastewater from a facility located at the
UNC-Greensboro
1000 Spring Garden Street
Greensboro
Guilford County
to receiving waters designated as North Buffalo Creek in the Cape Fear River Basin
in accordance with effluent limitations, monitoring requirements, and other
conditions set forth in Parts I, II, III and IV hereof.
This permit shall become effective September 1, 2000.
This permit and authorization to discharge shall expire at midnight on June 30, 2001.
Signed this day August 18, 2000.
�'dqyy-,!�
Kerr T. Stevens, director
Division of Water Quality
By Authority of the Environmental Management Commission

NORTH CAROLINA DEPARTMENT OF ENVIRONMENT
HEALTH AND NATURAL RESOUPgES
DIVISION OF ENVIRONMENTAL MANPGEMENT
August 23, 1995
MrEMQRANDUM
TO: Charles Alvarez
THROUGH: ')Ste Mauney
FROM: Ron Linville
SUBJECT: Permit Renewal
The University
Guilford County
p;3
03-040 -0 z
LlT iaow A IJKFF0.1.0 Crez4�
CV:pes 001 tM oLo�
CP:pe ozA)
Request
of NC at Greensbor /N00082082 �fp
Please be advised that the WSRO is unaware of any changes
associated with this discharge except for the potential of for a
new Music Center to be built in the future which may require a
permit modification for an additional discharge point if new
cooling water discharges are not allowed to enter the POTW
collection system.
The Region recommends reissuance of the NPDES Permit with
reduced sampling limits as is normally required in a general
permit (semi-annual sampling as opposed to the monthly sampling
currently being required). We are filling up regional file space
that appears to be unnecessary. A general permit (NCG00000) for
this facility should be a consideration which could benefit the
facility if a future modification becomes necessary for a new
discharge point. It would then be possible for the facility to
submit a Notice Of Intent as opposed to a permit modification.
CC: WSRO
Central Files
Technical Support
Guilford County EHLTH
a:\uncgcool.rnw

cc:
Permits and Engineering
Technical Support Branch
Guilford County Emergency Management
Central Files
WSRO
Date May 12, 1992
Page 1 of 4
NPDES STAFF REPORT AND RECOMMENDATIONS
County Guilford
NPDES Permit No. NCO082082
Cooling Waters and Boiler BLow-down/21 Points
PART I - GENERAL INFORMATION (Permits for existing discharges)
1. Facility and Address:
The University of North Carolina at Greensboro, 1000 Spring
Street. Mailing Address: Mr. Jack K. Colby, Director of
Physical Plant, University of North Carolina at Greensboro,
1000 Spring Garden Street, Greensboro,N.C. 27412
2. Date of Investigation: May 1, 1992
3. Report Prepared by: Arthur R. Hagstrom, Environmental
Engineer, DEM, WQ, WSRO
4. Persons Contacted and Telephone Number:
Harry J. Sanders, Utilities Superintendent - 919-334-5485
Benny Barham, Supervisor
Gary A. Beech, HVAC Technician
5. Directions to Site: UNC-G is located between the railroad
and West Market Street. The maintenance Group is located
off Oakland Avenue between Highland Avenue and Forest
Street.
6. Discharge Point(s) - List for all discharge points
(a) There are twenty (20) discharges going to the north at
various points on campus into several UT's.
Latitude: Lonaitude:
36 4' 25" 79 48' 25
360 3' 55" 790 48' 50"
(b) There is only one source of boiler blowdown into a
stormdrain that goes south.
Latitude: Longitude:
36 3' 50" 790 48' S0"
PLOTTED

NPDES #NC0082082
May 12, 1992
Page 2 of 4
Attach a USGS Map Extract and indicated treatment
r plant site and discharge point on map.
USGS Quad No. C19SE or USGS Quad Name Greensboro, N.C.
7. Size (land available for expansion and upgrading):
The over-all campus covers more than 240 acres. The systems
are on, in and beside the buildings served and the
discharges are to the nearest drainage ditch or storm
drainageway. Space is available for expansion systems.
B. Topography (relationship to flood plain included):
Graded for buildings and other site improvements. Tract
slopes down to the north with small hills and valleys
(slopes vary from 2% to 10%). Systems are not in flood
plains.
9. Location of nearest dwelling: Within 50 feet of dormitories
and teaching facilities. Cooling tower and boiler blow
down.
10. Receiving stream or affected surface waters: Cooling waters
(Twenty Discharges 001 through 020).
a. Classification: Class "C" - NSW/North Buffalo
b. River Basin and Subbasin No.: Cape Fear; 03-06-02
C. Describe receiving stream features and pertinent
downstream uses: The discharges flow into U/T's to
North Buffalo Creek and exit the campus through the
City. There appears to be some natural waters in the
UT's.
a. Classification: Class "C" - NSW/Sorth Buffalo
b. River Basin and Subbasin No.: Cape Fear; 03-06-02
c. Describe receiving stream features and pertinent
downstream uses: The discharge flows to City storm
drainage under roads, a railroad line, and resurges into
a neighbor. It eventually enters South Buffalo.
PART II - DESCRIPTION OF DISCHARGE AND TREATMENT WORKS
1. Type of wastewater: 0 8 Domestic
100% Industrial
a. Volume of Wastewater: Each system discharges as needed
to keep solids and conductivity in control.

NPDES #NC0082082
May 12, 1992
Page 3 of 4
b. Types and quantities of industrial wastewater:
Boiler Slowdown and cooling tower maintenance and
drainage.
c. Prevalent toxic constituents in wastewater:
See application for water treatment chemicals.
d. Pretreatment Program (POTWs only): N/A
in development approved
should be required not needed
2. Production rates (industrial discharges only) in
pounds per day: N/A
a. Highest month in the last 12 months: lbs/day
b. highest year in last 5 years: lbs/day
3. Description of industrial process (for industries only)
and applicable CFR Part and Subpart: N/A
4. Type of treatment (specify whether proposed or
existing): Chemical additions to control each system for
pH, conductivity, solids, etc., using sensor systems where
possible to drain, make-up and operate. Constant feed
systems also used. Towers are drained 1 to 2 times per
year.
The cooling systems are listed below:
001 Ferguson 175 Ton
002 Ferguson 175 Ton
003 Graham 180 Ton
004 Cone Art's 150 Ton
005 McIver I 143 Ton
006 McIver II 433 Ton
007 Eberhart Life Science I 250 Ton
008 Eberhart Life Science II 250 Ton
009 Eberhart Life Science III 180 Ton
O10 Petty Science 300 Ton
Oil Moore Nursing 150 Ton
012 Cone/Reynolds/Grogan Two 200 Ton
013 Dining Hall 250 Ton and 140 Ton
014 Jackson Library (Old) 197 Ton
015 Jackson Library (New) 305 Ton
016 Elliott University Center 294 Ton
017 Mossman 200 Ton
O18 Bryan Business/Economic 350 Ton
019 HHP I 500 Ton
020 HHP II 250 Ton
The Boiler system:
021 Power Plant -Gas fired with No. 2 fuel back-up.

NPDES #NC0082082
May 12, 1992
Page 4 of 4
5. Sludge handling and disposal scheme:
To City for disposal.
6: rTreatment plant classification: (attach completed rating
sheet) N/A
7. SIC Code(s) 8221
Wastewater Code(s) Primary 15 Secondary 16
Main Treatment Unit Code: 5 1 2 X 7
PART III - OTHER PERTINENT INFORMATION
1. Is this facility being constructed with Construction
Grants Funds (municipals only)? N/A
2. Special monitoring requests: Since all of their cooling
systems use the same chemical additives and controls, sample
a small number of the tower discharges (three or four) only.
Downstream should be monitored where each feeder UT (east
and west) joins the main creek.
3. Additional effluent limits requests: None.
4. Other: This Permit covers the University's discharges with
NPDES Permits. Sampling the upstream will be very
difficult.
PART IV - EVALUATION AND RECOMMENDATIONS
The WSRO recommends that an appropriate permit be issued for
this site without upstream sample but with downstream sampling.
The boiler blowdown may require additional cooling before
discharge.
Signature of repor reparer
Water Quality Regional Supervisor
Date

Permit No. NCO082082
STATE OF NORTH CAROLINA
DEPARTMENT OF ENVIRONMENT, HEALTH, AND NATURAL RESOURCES
DIVISION OF ENVIRONMENTAL MANAGEMENT
PERMIT
TO DISCHARGE WASTEWATER UNDER THE
NATIONAL POLLUTANT DISCHARGE ELIMINATION SYSTEM
In compliance with the provision of North Carolina General Statute 143-215.1, other lawful standards
and regulations promulgated and adopted by the North Carolina Environmental Management
Commission, and the Federal Water Pollution Control Act, as amended,
The University of North Carolina at Greensboro
is hereby authorized to discharge wastewater from a facility located at the
UNC-Greensboro
between Southern Railroad and West Market Street
Greensboro
Guilford County
to receiving waters designated as North and South Buffalo Creeks in the Cape Fear River Basin
in accordance with effluent limitations, monitoring requirements, and other conditions set forth in Parts I,
II, III, and IV hereof.
The permit shall become effective June 1, 1996.
This permit and the authorization to discharge shall expire at midnight on January 31, 2001.
Signed this day April 29, 1996.
Original Signed By
David A. Goodrich
A. Preston Howard, Jr., P.E., Director
Division of Environmental Management
By Authority of the Environmental Mangement Commission

Permit No. NC0082082
SUPPLEMENT TO PERMIT COVER SHEET
The University of North Carolina at Greensboro
is hereby authorized to:
1. Continue to discharge cooling water from outfalls 001, 002, 003, 004, 005, 006, 007, 008,
009, 010, 011, 012, 013, 014, 015, 016, 017, 018, 019 and 020 in North Buffalo Creek and
boiler blowdown from outfall 021 into South Buffalo Creek located at UNC - Greensboro,
between Southern Railroad and West Market Street, Greensboro, Guilford County (See Part
III of this Permit), and
2. Discharge from said treatment works at the location specified on the attached map into North and
South Buffalo Creek which is classified Class C-NSW waters in the Cape Fear River Basin.
C"'MvV

A. (). EFFLUENT LIMITATIONS AND MONITORING REQUIREMENTS FINAL Permit No. NC0082082
During the period beginning on the effective date of the permit and lasting until expiration, the Permittee is authorized to discharge from
outfall(s) serial number 001, 002, 003, 004, 005, 006, 007, 008, 009, OtO, 011, 012, 013, 014, 015, 016, 017, 018, 019 and 020. Such
discharges shall be limited and monitored by the permittee as specified below:
Effluent Characteristics Discharge Limitations Monitoring Requirements
Lbs/day Units (specify) Measurement Sample `Sample
Mon. Avg. Daily Max Mon. Avg. Daily Max. Frequency Type Location
Flow Monthly Instantaneous E
Temperature Monthly Grab E,D
Total Residual Chlorine— Monthly Grab E
THERE SHALL BE NO CHROMIUM, ZINC, OR COPPER ADDED TO THE TREATMENT SYSTEM EXCEPT AS PRE -APPROVED
ADDITIVES TO BIOCIDAL COMPOUNDS.
* Sample Locations: E - Effluent, D - Downstream for outfalls (001 - 020) at end of streams before entering North Buffalo Creek
** The temperature of the effluent shall be such as not to cause an increase in the temperature of the receiving stream of more than 2.8° and in
no case cause the ambient water temperature to exceed 32.0°.
*** Monitoring requirements. only apply if chlorine is added to the cooling water.
The permittee shall obtain authorization from the Division of Environmental Management prior to utilizing any biocide in the cooling water (See
Part III of this Permit).
The pH shall not be less than 6.0 standard units nor greater than 9.0 standard units and shall be monitored monthly at the effluent by grab
sample.
There shall be no discharge of floating solids or visible foam in other than trace amounts.

A. (). EFFLUENT LIMITATIONS AND MONITORING REQUIREMENTS FINAL
Permit No. NC0082082
During the period beginning on the effective dale of the permit and lasting until expiration, the Permittee is authorized to discharge from
outfall(s) serial number 021. Such discharges shall be limited and monitored by the permittee as specified below:
Effluent Characteristics Discharge Limitations Monitoring Requirements
Lbstday Units (specify Measurement Samnle *Sample
Mon. Avg. Daily Max Mon. Avg. Daily Max. Frequency Type Location
Flow
Temperature
Total Residual Chlorine•'•
Monthly
Monthly
Monthly
Instantaneous E
Grab E,D
Grab E.
THERE SHALL BE NO CHROMIUM, ZINC, OR COPPER ADDED TO THE TREATMENT SYSTEM EXCEPT AS PRE -APPROVED
ADDITIVES TO BIOCIDAL COMPOUNDS.
* Sample Locations: E - Effluent, D - Downstream before crossing under the railroad crossing
** The temperature of the effluent shall be such as not to cause an increase in the temperature of the receiving stream of more than 2.8* and in
no case cause the ambient water temperature to exceed 32.0'.
*** Monitoring requirements only apply if chlorine is added to the cooling water.
The permittee shall obtain authorization from the Division of Environmental Management prior to utilizing any biocide in the cooling water (See
Part III of this Permit).
The pH shall not be less than 6.0 standard units nor greater than 9.0 standard units and shall be monitored monthly at the effluent by grab
sample.
There shall be no discharge of floating solids or visible foam in other than trace amounts.

Part III
Permit No. NCO082082
E. Biocide Condition
The permittee shall not use any biocides except those approved in conjunction with the permit
application. The permittee shall notify the Director in writing not later than ninety (90) days prior
to instituting use of any additional biocide used in cooling systems which may be toxic to aquatic
life other than those previously reported to the Division of Environmental Management. Such
notification shall include completion of Biocide Worksheet Form 101 and a map locating the
discharge point and receiving stream.

RE(;F-ivtD
MAY 1 5 1992
cc: Permits and Engineering
Technical Support Branch TECHNICAL SUPPORT BRANCH
Guilford County Emergency Management
Central Files
WSRO
Date May 12, 1992
Page 1 of 4
NPDES STAFF REPORT AND RECOMMENDATIONS
County Guil:NNC
rd
NPDES Permit N 0082082
Cooling Waters and Boil - 1 Points
PART I - GENERAL INFORMATION (Permits for existing discharges)
1. Facility and Address: O'3-O(o-OZ
The University of North Carolina at Greensbc
Street. Mailing Address: Mr. Jack K. Colb)fU_T iJOcTc% Grccµ
Physical Plant, University of North Carolina ooi kw..ezo
1000 Spring Garden Street, Greensboro,N.C.
2. Date of Investigation: May 1, 1992
3. Report Prepared by: Arthur R. Hagstrom, Environmental
Engineer, DEM, WQ, WSRO
4. Persons Contacted and Telephone Number:
Harry J. Sanders, Utilities Superintendent - 919-334-5485
Benny Barham, Supervisor
Gary A. Beech, HVAC Technician
5. Directions to Site: UNC-G is located between the railroad
and West Market Street. The maintenance Group is located
off Oakland Avenue between Highland Avenue and Forest
Street.
6. Discharge Point(s) - List for all discharge points
(a) There are twenty (20) discharges going to the north at
various points on campus into several UT's.
Latitude: Lonoitude:
36 4' 25" 79 48' 25
360 3' 55" 790 48' 50"
(b) There is only one source of boiler blowdown into a
stormdrain that goes south.
Latitude:
36 3' 50"
Lo8gitude:
79 46' 50"
PLOTTED

NPDES $NC0082082
May 12, 1992
Page 2 of 4
Attach a USGS Map Extract and indicated treatment
plant site and discharge point on map.
USGS Quad No. C19SE or USGS Quad Name Greensboro, N.C.
7. Size (land available for expansion and upgrading):
The over-all campus covers more than 240 acres. The systems
are on, in and beside the buildings served and the
discharges are to the nearest drainage ditch or storm
drainageway. Space is available for expansion systems.
8. Topography (relationship to flood plain included):
Graded for buildings and other site improvements. Tract
slopes down to the north with small hills and valleys
(slopes vary from 2% to 10%). Systems are not in flood
plains.
9. Location of nearest dwelling: Within 50 feet of dormitories
and teaching facilities. Cooling tower and boiler blow
down.
10. Receiving stream or affected surface waters: Cooling waters
(Twenty Discharges 001 through 020).
a. Classification: Class "C" - NSW/North Buffalo
b. River Basin and Subbasin No.: Cape Fear; 03-06-02
c. Describe receiving stream features and pertinent
downstream uses: The discharges flow into U/T's to
North Buffalo Creek and exit the campus through the
City. There appears to be some natural waters in the
UT's.
a. Classification: Class "C" - NSW/Sorth Buffalo
b. River Basin and Subbasin No.: Cape Fear; 03-06-02
c. Describe receiving stream features and pertinent
downstream uses: The discharge flows to City storm
drainage under roads, a railroad line, and resurges into
a neighbor. It eventually enters South Buffalo.
PART II - DESCRIPTION OF DISCHARGE AND TREATMENT WORKS
1. Type of wastewater: 0 8 Domestic
1008 Industrial
a. Volume of Wastewater: Each system discharges as needed
to keep solids and conductivity in control.

NPDES #NC0082082
May 12, 1992
Page 3 of 4
b. Types and quantities of industrial wastewater:
Boiler Slowdown and cooling tower maintenance and
drainage.
' c. Prevalent toxic constituents in wastewater:
See application for water treatment chemicals.
d. Pretreatment Program (POTWs only): N/A
in development approved
should be required not needed
2. Production rates (industrial discharges only) in
pounds per day: N/A
a. Highest month in the last 12 months: lbs/day
b. highest year in last 5 years: lbs/day
3. Description of industrial process (for industries only)
and applicable CFR Part and Subpart: N/A
4. Type of treatment (specify whether proposed or
existing): Chemical additions to control each system for
pH, conductivity, solids, etc., using sensor systems where
possible to drain, make-up and operate. Constant feed
systems also used. Towers are drained 1 to 2 times per
year.
The cooling systems are listed below:
001 Ferguson 175 Ton
002 Ferguson 175 Ton
003 Graham 180 Ton
004 Cone Art's 150 Ton
005 McIver I 143 Ton
006 McIver II 433 Ton
007 Eberhart Life Science I 250 Ton
008 Eberhart Life Science II 250 Ton
009 Eberhart Life Science III 180 Ton
O10 Petty Science 300 Ton
011 Moore Nursing 150 Ton
012 Cone/Reynolds/Grogan Two 200 Ton
013 Dining Hall 250 Ton and 140 Ton
014 Jackson Library (Old) 197 Ton
015 Jackson Library (New) 305 Ton
016 Elliott University Center 294 Ton
017 Mossman 200 Ton
018 Bryan Business/Economic 350 Ton
019 HHP I 500 Ton
020 HHP II 250 Ton
The Boiler system:
021 Power Plant -Gas fired with No. 2 fuel back-up.

NPDES $NC0082082
May 12, 1992
Page 4 of 4
5. Sludge handling and disposal scheme:
To City for disposal.
6: Treatment plant classification: (attach completed rating
sheet) N/A
7. SIC Code(s) 8221
Wastewater Code(s) Primary 15 Secondary 16
Main Treatment Unit Code: x xY, X 7
PART III - OTHER PERTINENT INFORMATION
1. Is this facility being constructed with Construction
Grants Funds (municipals only)? N/A
2. Special monitoring requests: Since all of their cooling
systems use the same chemical additives and controls, sample
a small number of the tower discharges (three or four) only.
Downstream should be monitored where each feeder UT (east
and west) joins the main creek.
3. Additional effluent limits requests: None.
4. Other: This Permit covers the University's discharges with
NPDES Permits. Sampling the upstream will be very
difficult.
PART IV - EVALUATION AND RECOMMENDATIONS
The WSRO recommends that an appropriate permit be issued for
this site without upstream sample but with downstream sampling.
The boiler blowdown may require additional cooling before
discharge.
Signature of repor /reparer
Water Quality Regm0nal Supervisor
5-/2 -qL
Date

t ;.