NCS000201_Fact sheet binder_20231011

DEQ / DEMLR
FACT SHEET FOR NPDES INDUSTRIAL INDIVIDUAL
STORMWATER PERMIT DEVELOPMENT
Basic Information for Permit Issuance and Renewals:
Permit Writer/Date Brianna Young 10/9/2023
Permit Number NCS000201
Owner/Facility Name UNC at Chapel Hill/UNC-CH Hazardous Materials
Facility
SIC AICS Code/Category 8221 /Colleges and Universities
Basin Name/Sub-basin number Cape Fear/03-06-06
Receiving Stream/HUC UT to Bolin Creek(Hogan Lake /030300020603
Stream Classification/Stream Segment WS-V;NSW/ 16-41-1-15-1-(0.5)
Is the stream impaired [on 303 d list]? No
Any TMDLs? No
Any threatened and/or endangered species? See Section 2 below
Any compliance concerns? See Section 2 below
Any permit mods since lastpermit? No
New expiration date 10/31/2028
Comments on Draft Permit? See Section 6 below
Section 1. Facility Activities and Process:
The UNC-Chapel Hill Hazardous Materials Facility (HMF) is where hazardous materials used by UNC-
Chapel Hill are stored/managed and vehicle maintenance occurs. The HMF operates under a Treatment,
Storage and Disposal (TSO)permit pursuant to the Resource Conservation and Recovery Act (RCRA)
authorizing UNC-CH to treat, store and dispose of hazardous waste generated by UNC-CH and UNC
Health Care at this facility. Mixed radioactive wastes generated at UNC-CH are also transferred to HMF
for storage before being shipped off site for disposal. The service station functions as a gasoline station
and garage for University and State vehicles.
The HMF is where hazardous materials generated by UNC-Chapel Hill and UNC Health are treated,
stored, and disposed of, and low-level mixed radioactive wastes are transferred here for storage before
being shipped off site for disposal. The Service Station functions as a gasoline station and garage for
University and State vehicles. All hazardous materials are stored inside of the two buildings.
Outfall SW001:
Drainage area consists of the Hazardous Materials Facility, University Service Station, and commercial
activities.
Why Industrial Sites with Stormwater are Subject to a Permit: Federal NPDES regulations define
stormwater discharge associated with industrial activity in 40 CFR §122.26 (b)(14) as: "the discharge
from any conveyance that is used for collecting and conveying storm water and that is directly related to
manufacturing,processing or raw materials storage areas at an industrial plant. The term does not
include discharges from facilities or activities excluded from the NPDES program under this part 122.
For the categories of industries identified in this section, the term includes,but is not limited to, storm
water [sic] discharges from industrial plant yards; immediate access roads and rail lines used or traveled
by carriers of raw materials, manufactured products, waste material, or byproducts used or created by
the facility; material handling sites; refuse sites; sites used for the application or disposal of process
Page 1 of 6

waste waters (as defined at part 401 of this chapter); sites used for the storage and maintenance of
material handling equipment; sites used for residual treatment, storage, or disposal; shipping and
receiving areas; manufacturing buildings; storage areas (including tank farms) for raw materials, and
intermediate and final products; and areas where industrial activity has taken place in the past and
significant materials remain and are exposed to storm water. For the purposes of this paragraph, material
handling activities include storage, loading and unloading, transportation, or conveyance of any raw
material, intermediate product, final product, byproduct or waste product. The term excludes areas
located on plant lands separate from the plant's industrial activities, such as office buildings and
accompanying parking lots as long as the drainage from the excluded areas is not mixed with storm
water [sic] drained from the above described areas."
Section 2. Monitoring Information and Compliance History:
• October 2013 to November 2022, benchmarks exceeded for:
o TSS 3x
o BOD Ix
o COD Ix
Threatened/Endangered Species:
In the vicinity of discharge there are:
• Chapman's Redtop (Tridens chapmanii;NC status: T)
• Sampson's Snakeroot(Orbexilum pedunculatum; NC status: E)
• Coppery Emerald(Somatochlora georgiana; NC status: SR)
• Fleshy Hawthorn(Crataegus succulenta;NC status: SR-P)
In addition, in the nearby vicinity there are:
• Torrey's Mountain-mint(Pycnanthemum torreyi; NC status: SR-T)
• Glad Wild Quinine (Parthenium auriculatum; NC status: SR-T)
• Earle's Blazing-star(Liatris squarrulosa; NC status: SR-P)
• Smooth Coneflower(Echinacea laevigata; NC status: E; Federal status: T)
• Four-toed Salamander(Hemidactylium scutatum; NC status: SC)
• Carolina Ladle Crayfish (Cambarus davidi;NC status: SR)
• Ringed Witch Grass (Dichanthelium annulum; NC status: E)
• Henslow's Sparrow (Ammodramus henslowii;NC status: E)
• Bachman's Sparrow(Peucaea aestivalis; NC status: SC)
• Spring Coral-root(Corallorhiza wisteriana;NC status: SR-O)
• Closter's Brook-hypnum(Hygrohypnum closteri;NC status: SR-T)
• Appalachian Loosestrife (Steironema tonsum; NC status: SR-P)
Section 3. Proposed Monitoring for Stormwater Discharges:
The Division considered potential pollutants from past and present industrial activities and data was
submitted for October 2013 to November 2022. Quantitative sampling included pH, TSS, non polar
O&G, BOD, COD, and new motor oil usage.
Page 2 of 6

Parameters are based on potential pollutants in the drainage area, sampling results, and in some cases,
dependent upon future activities (e.g., ash removal through the drainage area). Below is a table of the
proposed monitoring for each outfall at the UNC-Chapel Hill Hazardous Materials Facility site.
Outfall SWO01
Quarterly monitoring
Total Suspended Solids BASIS: Potential pollutant from drainage area and BMP effectiveness
(TSS) indicator.
Quarterly monitoring
pH BASIS: Pollutant indicator
Quarterly monitoring
Total Rainfall BASIS: Discharge potential indicator
Quarterly monitoring
Non-Polar Oil &Grease BASIS: Potential pollutant from lubricants; Method 1664 SGT-HEM
targets petroleum-based O&G
Quarterly monitoring
Monthly Oil Usage BASIS: Potential pollutant from drainage area
Quarterly monitoring
BOD BASIS: Discharge potential indicator
Quarterly monitoring
COD BASIS: Discharge potential indicator
Stormwater Benchmarks and Tiered Response: Rather than limits,North Carolina NPDES
Stormwater permits contain benchmark concentrations. Stormwater benchmarks are numerical action
levels for stormwater monitoring. Benchmarks are not effluent limits, and benchmark exceedances are
not permit violations. Benchmarks provide facilities a tool for assessing the significance of pollutants in
stormwater discharges and the effectiveness of best management practices (BMPs). Benchmark
concentrations are intended as guidelines for the facility's development and implementation of the
Stormwater Pollution Prevention Plan (SWPPP).
Benchmark exceedances require the permittee to increase monitoring, increase management actions,
increase record keeping, and/or install stormwater BMPs in a tiered program. The permit establishes a
tiered approach to specify actions the permittee must take in response to analytical results above
benchmark concentrations. The tiered structure of the permit provides the permittee and DEMLR wide
flexibility to address issues that may arise with one or more parameters and/or outfalls.
Metals benchmarks are calculated to mimic acute water quality standards and with the guidance of
DWR. NC DWR follows established federal procedures for calculating acute standards when developing
the benchmarks. Just like the acute standards, metals benchmarks normally reflect one half of the
calculated Final Acute Value (the "1/2 FAV"). In most cases, translation into total recoverable values is
based on an assumed hardness of 25 mg/L and a total suspended solids (TSS) concentration of 10 mg/L.
Acute standards protect aquatic life from negative impacts of short-term exposure to higher levels of
Page 3 of 6

chemicals where the discharge enters a waterbody. The Stormwater Permitting Program applies this
approach because of the ephemeral nature of rainfall events.
The Division may evaluate results to determine if a smaller suite of parameters for some outfalls is
adequate to characterize potential pollution or BMP effectiveness. For example, one or more metals or
other parameters may serve as an adequate tracer for the presence of ash pollution during disturbance or
ash removal in specific drainage areas at this site. For parameters that do not have a stormwater
benchmark, the Division may develop a benchmark value if appropriate toxicity data become available
or if rising trends in concentrations suggest a persistent source.
A summary of the benchmarks in the draft permit, and their basis, is below:
Parameter Benchmark Basis
Total Suspended 100 mg/L National Urban Runoff Program(NURP) Study, 1983
Solids TSS
H 6 s.u. —9 s.u. NC Water Quality Standard(Range)
Non-Polar Oil & Review of other state's daily maximum benchmark
Grease 15 mg/L concentration for this more targeted O&G;NC WQS that
EPA Method 1664 does not allow oil sheen in waters
SGT-HEM
BOD 30 mg/L BPJ; Based on Secondary Treatment Regulation(40 CFR
133.03
COD 120 mg/L BPJ; Generally found at levels 4x BOD5 in domestic
wastewaters
Stormwater Pollution Prevention Plan: The proposed permit conditions reflect the EPA and NC's
pollution prevention approach to stormwater permitting. The Division's maintains that implementation
of Best Management Practices (BMPs) and traditional stormwater management practices that control the
source of pollutants meets the definition of Best Available Technology (BAT) and Best Conventional
Pollutant Control Technology(BCT). The permit conditions are not numeric effluent limitations but are
designed to be flexible requirements for implementing site-specific plans to minimize and control
pollutants in stormwater discharges associated with the industrial activity. Title 40 Code of Federal
Regulations (CFR) §122.44(k)(2) authorizes the use of BMPs in lieu of numeric effluent limitations in
NPDES permits when the agency finds numeric effluent limitations to be infeasible. The agency may
also impose BMP requirements which are "reasonably necessary" to carry out the purposes of the Act
under the authority of 40 CFR 122.44(k)(3). The conditions proposed in this draft permit are included
under the authority of both of these regulatory provisions. In essence, the pollution prevention and BMP
requirements operate as limitations on effluent discharges that reflect the application of BAT/BCT.
Flexibility in Tier Responses: Tier Two actions provide an opportunity for the permittee to propose an
alternative monitoring plan for approval by the Region:
• Alternatively, in lieu of steps 2 and 3, the permittee may, after two consecutive exceedances,
exercise the option of contacting the DEMLR Regional Engineer as provided below in Tier
Three. The Regional Engineer may direct the response actions on the part of the permittee as
provided in Tier Three, including reduced or additional sampling parameters or frequency.
• If pursuing the alternative above after two consecutive exceedances, the permittee may propose
an alternative monitoring plan for approval by the Regional Engineer.
Page 4 of 6

The permit therefore allows the permittee to petition the Regional Office for monitoring changes sooner
than Tier Three (upon any four benchmark exceedances) and gives guidance on one option to take. For
example, the permittee may request that mercury only be monitored semi-annually under the tiers, or
that only parameters over the benchmark be monitored more frequently. In this way, changes to the
monitoring scheme for any outfall could be handled outside of a permit modification.
Other Proposed Requirements:
• It is standard for Stormwater Pollution Prevention Plan(SWPPP) requirements to include an
annual certification that stormwater outfalls have been evaluated for the presence of non-
stormwater discharges, and if any are identified, how those discharges are permitted or otherwise
authorized.
• Requirement to submit a request for permit modification if the facility identifies or creates any
new outfalls, removes outfalls, or alters any drainage area that changes potential pollutants.
• The Division expects the permittee to apply best professional judgment and consider the safety
of its personnel in fulfilling sampling obligations under the permit.
• Federal regulations require electronic submittal of all discharge monitoring reports (DMRs). If a
state does not establish a system to receive such submittals, then permittees must submit DMRs
electronically to the EPA.
• Quarterly QualitativeNisual Monitoring to assure regular observation of outfalls throughout
year.
Section 4. Changes from previous permit to draft:
• Monitoring increased from semi-annually to quarterly for all parameters (qualitative and
quantitative)
• "No discharge" clarifications made
• Feasibility study requirement removed per updated stormwater program requirements
• eDMR requirement added
• Boilerplate language moved into body of the permit; boilerplate no longer attached
• Outfall-specific monitoring been implemented to reflect industrial activity and potential
pollutants specific to each discharge area
• Benchmarks updated for parameters per guidance from DWR Standards group on stormwater
benchmarks
Section 5. Changes from draft to final:
• None
Section 6. Discussions with the Facility and Regional Office:
• Initial contact with facility: 11/10/2022
• Initial contact with Regional Office: 11/10/2022
• Draft sent to CO peer review: N/A
• Draft sent to Regional Office: 9/6/2023
• Final permit sent for supervisor signature: N/A
Page 5 of 6

Section 7. Comments received on draft permit:
• Olivia Munzer(NCVWRC; via email 9/28/2023): I have no comments.
Page 6 of 6

ObserverBeaufort cia:zette The Herald-Rock Hill el lsl�Herald-Miami Sun Nevirs-Myrde Beach
Bellingham Herald Idaho Statesman Ralfth Ne,vs&
Bradenton Herald Island Packet The Olympian San Luis Obispo Tiriburie
A'MCCLATCHY Centre Daily Timets Kansas City Star Sacramento Bee T"-Qty Herald
Charlotte ObsColumbus Ledger-Enquiner Me,rced Sun-Star The State-Columbia
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Anti Order Number Identification Order Po Amount Cols Depth
38106 40H Print Legal Ad4PLO1381840-IPUDB8184 $S1g1g 2 26L
Attention: Joyce Sanford Clark STATE OF NORTH CAROLINA
NC DENR ENGERGY MINERAL&LAND RESOURCES i COUNTY OFWM COUNTY OFDURHAM
1612 MAIL SERVICE CENTER Before the undersigned,a Notary Public of Dallas
RALEIGH,NC 276991612 County,Texas,duly commissioned and authorized to
administer oaths,affirmations,etc,personally
[e-mail] appeared Tara Pennington,who being duly sworn or
affirmed,according to law,doth depose and say that he
NORTH CAROLINA ENVIRONMENTAL MANAGEMENT COMMISSION or she is Accounts Receivable Specialist of the News&
INTENTTOISSUE Observer Publishing Company,a corporation organized
NPDES STORMWATER DISCHARGE PERMITS and doing business under the Laws of the State of North
The North Carolina Environmental Management Commission proposes to Issue g
NPDES stormsveter discharge Pi to Me person(s) listed below.Public Carolina,and publishing a newspaper known as The
comment or objection to the draft permits is Invited.Written comments regarding News&Observer.Wake and State aforesaid,the said
the proposed Permit will be accepted until 30 days after the publish date of this
notice and considered in the final determination regarding permit Issuance and newspaper in which such notice,paper,document,or
Pemlg provisions.The Dlrector of the NC Division of Energy,Mineral,and Land legal advertisement was
Resources(DEMLR)may hold a public hearing should there be a slgniflpm published was,at the time of
degree of public interest.Please mail comments endfor information requests to each and every such publication,a newspaper meeting
DEMLR at 1612 Mail Service Center,Raleigh,NC 27699-1612. all of the requirements and qualifications of Section l-
• UNC at Chapel Hill[Suite 60Ub,Campus Box 1005,Chapel Hill,NC 27599] 597 of the General Statutes of North Carolina and was a
has requested renewal of permit NCS000201 for the UNC-CH Harerd- news g
ous Materials Facility In Orange County.This facility dischargesto an un- qualified paper within the meaning of Section 1.597
nemedtiributary to Bolin Creek in the Cape Fear River Basin. ; of the General Statutes of North Carolina.and that as
Interested Persons may visit DEMLR at 512 N.Salisbury Street,Raleigh,NC ; such he or she makes this affidavit;and is familiar with
27604 to review information on file.Additional Infor iat on on NPDES permits the books,files and business of said corporation and by
and this notice may be found on our websne:httpsl/deq.=.gm/abouVdivi- ; referencetothefilesofsaid
sions/energy-mineral andland-resourem/stommatadstom ter- program/ publication the attached
stomrvvater-public-notices,or by contacting Brlanna young at brlanna.yourgO advertisement for NC DENR ENGERGY MINERAL&LAND
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Sep62023 dates as follows:
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Young, Brianna A
From: Munzer, Olivia
Sent: Thursday, September 28, 2023 9:30 AM
To: Young, Brianna A
Subject: RE: Draft NPDES stormwater permit NCS000201
Ms. Young,
I have no comments.Thank you.
Olivia Munzer
NC Wildlife Resources Commission
336-269-0074
From:Young, Brianna A<[e-mail]>
Sent:Wednesday, September 6, 2023 11:47 AM
To: Munzer, Olivia <[e-mail]>
Subject: Draft NPDES stormwater permit NCS000201
Good morning,
The draft stormwater permit for the UNC-CH Hazardous Materials Facility (NCS000201) has been submitted for public
notice.This facility discharges to an area near threatened/endangered species. Please provide any comments by
October 6, 2023.
Thank you,
Brianna Young, MS(she/her)
Industrial Individual Permits Coordinator
Stormwater Permitting Program
NC DEQ/Division of Energy, Mineral, and Land Resources (DEMLR)
[e-mail](e-mail preferred)PLEASE NOTE NEW EMAIL ADDRESS
**DEQ is updating its email addresses to @deq.nc.gov in phases from May 1st to June 9th. Employee email addresses may look
different, but email performance will not be impacted.
919-707-3647 (office)
Mailing address: 1612 Mail Service Center, Raleigh, INC 27699-1612
Physical address: 512 North Salisbury Street, Raleigh, NC 27604
Email correspondence to and from this address is subject to the North Carolina
Public Records Law and may be disclosed to third parties.
The Department of Environmental Quality has adjusted operations to protect the health and safety of the staff and public. Please
check with the appropriate staff before visiting our offices, as we may be able to handle your requests by phone or email.
Email correspondence to and from this address may be subject to the North Carolina Public Records Law and may be disclosed to third parties by an authorized
state official.
1

Email correspondence to and from this sender is subject to the N.C.Public Records Law and may be disclosed to third parties.
2

Young, Brianna A
From: Myers, Sharon A <[e-mail]>
Sent: Monday, December 5, 2022 4:21 PM
To: Young, Brianna A
Cc: Clarke,Janet L; Brennan, Catherine; Battle, George Edward III
Subject: FW: [External] RE: UNC-Chapel Hill Hazardous Materials Facility stormwater permit
NCS000201
Attachments: December 2022 Additional Information for HMF Permit Renewal.pdf; HMF Stormwater
Sampling Summary Tables 12_5_2022.pdf
CAUTION: External email. Do not click links or open attachments unless you verify.Send all suspicious email as an attachment to
Report Spam.
Hi Brianna,
Please find UNC-CH's response to your November 10, 2022 email attached for your review. Janet Clarke is now the
Owner Contact and a Permit Contact for Permit No. NCS000201.
I'll be retiring at the end of this year, so please reach out to Janet Clarke if you have any questions or need additional
information.
Thanks.
Sharon
Sharon Myers, L. G.
Environmental Compliance Officer
UNC-CH EHS Dept.
919-972-9752 (office)
From:Young, Brianna A<[e-mail]>
Sent: Monday, November 14, 2022 8:26 AM
To: Myers, Sharon A<[e-mail]>
Cc: Battle, George Edward III <[e-mail]>; Clarke,Janet L<[e-mail]>
Subject: RE: [External] RE: UNC-Chapel Hill Hazardous Materials Facility stormwater permit NCS000201
You don't often get email from [e-mail]. Learn why this is important
Thank you, Sharon. Please let me know if you have any questions as you work through the request.
Brianna Young, MS(she/her/hers)
Industrial Individual Permits Coordinator
Stormwater Permitting Program
NC DEQ/Division of Energy, Mineral, and Land Resources (DEMLR)
[e-mail](e-mail preferred)
919-707-3647 (office)
Mailing address: 1612 Mail Service Center, Raleigh, NC 27699-1612
Physical address: 512 North Salisbury Street, Raleigh, NC 27604
1

Email correspondence to and from this address is subject to the North Carolina
Public Records Law and may be disclosed to third parties.
Based on the current guidance to minimize the spread of COVID-19,the Department of Environmental Quality has adjusted
operations to protect the health and safety of the staff and public. Please check with the appropriate staff before visiting our offices,
as we may be able to handle your requests by phone or email.We appreciate your patience as we continue to serve the public
during this challenging time.
From: Myers, Sharon A<[e-mail]>
Sent: Friday, November 11, 2022 3:12 PM
To:Young, Brianna A<[e-mail]>
Cc: Battle, George Edward III <[e-mail]>; Clarke,Janet L<[e-mail]>
Subject: [External] RE: UNC-Chapel Hill Hazardous Materials Facility stormwater permit NCS000201
CAUTION: External email. Do not click links or open attachments unless you verify.Send all suspicious email as an attachment to
Report Spam.
Hi Brianna,
Thank you for your email. We are working on a response, and will provide the requested information.
Sharon
From:Young, Brianna A<[e-mail]>
Sent:Thursday, November 10, 2022 11:25 AM
To: Battle, George Edward III <[e-mail]>
Cc: Myers, Sharon A<[e-mail]>
Subject: UNC-Chapel Hill Hazardous Materials Facility stormwater permit NCS000201
You don't often get email from [e-mail]. Learn why this is important
Good morning,
I am working on renewing the individual stormwater permit for the UNC-Chapel Hill Hazardous Materials
Facility (NCS000201). I need additional information in order to 1) confirm that the information I have is correct
and 2)make sure the permit adequately serves the needs of the facility. Please provide the following:
• Description of industrial activity occurring onsite;
• Confirmation on the number of outfalls and associated coordinates;
• Description of industrial activity in each drainage area;
• SIC (NAICS) code;
• An electronic spreadsheet summarizing all of the monitoring data that has been collected since the
effective date of the current permit;
• Verification that the information in the renewal application is still complete and correct; and
• An explanation of any operational changes since the renewal application was submitted.
Enter your stormwater permit number into the Stormwater Permit Summary Report and you will see a form that
includes the address of the facility, contact information for the permit, and the regulated stormwater outfall(s)for the
facility. Please review the facility information to make sure it is correct. Information can be updated using the links
provided below, where applicable:
2

• Facility/Company name or ownership: Name/Ownership Change Form
• Owner Affiliation (Legally responsible person; i.e., someone with the company who is designated to
represent the company per signatory requirements or another authorized representative): Permit Contact
Update Request Form
• Delegation of Signature Authority (DOSA): Permit Contact Update Request Form
• Billing contact: Permit Contact Update Request Form
• Permit contact: Permit Contact Update Request Form
• Facility contact: Permit Contact Update Request Form
• Facility address only: Email Bethanyy og ulias
• Stormwater outfall information: Email Bethany Georgoulias
• Visit the eDMR Six Steps website and complete Steps 1 and 2.
• Pay outstanding permit fees: Stormwater ePgMent website
Once I have the above listed information, I can continue my review. You will receive a draft permit for a 30-day
comment period. During this time we will be able to address any comments or concerns you have. During the
same 30-day period, the draft will be sent to a Regional Office staff member for review as well as out to public
notice. Once all comments and concerns are addressed, you may be issued a final permit.
Please contact me if you have any questions.
Thank you,
Brianna Young, MS (she/her/hers)
Industrial Individual Permits Coordinator
Stormwater Permitting Program
NC DEQ/ Division of Energy, Mineral, and Land Resources (DEMLR)
[e-mail](e-mail preferred)
919-707-3647 (office)
Mailing address: 1612 Mail Service Center, Raleigh, NC 27699-1612
Physical address: 512 North Salisbury Street, Raleigh, NC 27604
�
NORTH CAROLINA tl /)-
Department of Environmental Quality
Email correspondence to and from this address is subject to the North
Carolina Public Records Law and may be disclosed to third parties.
Based on the current guidance to minimize the spread of COVID-19,the Department of Environmental Quality has adjusted
operations to protect the health and safety of the staff and public. Please check with the appropriate staff before visiting our offices,
as we may be able to handle your requests by phone or email.We appreciate your patience as we continue to serve the public
during this challenging time.
3

Response to November 10, 2022 Request for
Additional Information and Verification
NPDES Permit Renewal Application
Permit Number NCS000201
Description of industrial activity occurring onsite
Onsite Industrial Activity
The Hazardous Materials Facility (HMF) and the University Service Station are the only
industrial activities on site. Commercial activities (i.e., UNC-CH Facility Services) and storage of
surplus materials are conducted in the Facilities Services Construction Shops, Giles F. Horney
and General Storeroom buildings that surround the "P" parking lot area. A narrative
description of each facility follows.
Hazardous Materials Facility
The HMF is located south of Estes Drive, adjacent to the "P" parking (see 2017 permit renewal
application for figures). The facility has been in operation since 1983. In 1990, the North
Carolina Department of Environmental Quality (DEQ), Division of Waste Management,
Hazardous Waste Section issued a Treatment, Storage and Disposal (TSD) permit pursuant to
the Resource Conservation and Recovery Act (RCRA) authorizing UNC-CH to treat, store and
dispose of hazardous waste generated by the UNC-CH and UNC Health at this facility. The RCRA
TSD permit was renewed in 2005 and in 2016.
Additionally, low-level mixed radioactive wastes generated at UNC-CH are picked up on campus
and transferred to HMF for storage before being shipped off site for disposal. The HMF is
operated by UNC-CH Department of Environment, Health and Safety (EHS) and is subject to the
regulatory authority of the United States Environmental Protection Agency (EPA), DEQ, the
United States Department of Transportation (DOT) and the North Carolina Division of Radiation
Protection (DRP). Copies of the RCRA permit are located at the HMF and UNC-CH EHS,
Environmental Affairs Section.
The HMF incorporates several safety and operating features, including an automatic fire and
smoke detection-alarm system, built-in closed floor sumps and berms for spill and leak
detection and collection, door alarms and motion detectors within the two waste buildings.
The facility is normally operated Monday through Friday from 8 a.m. to 5 p.m., is totally
secured within an 8-foot fence and is locked when not occupied. As required by the RCRA
permit, all hazardous materials are stored inside of the two buildings in closed, labeled
containers. Both daily and weekly inspections of the facility contents are conducted. The
hazardous waste is regularly shipped off site for disposal by contracted commercial hazardous
waste management firms. The loading dock in front of the HMF is sloped towards the building

and bermed to prevent runoff in case of a spill, so that any spilled material will stay on the site
(near the building) and can be controlled, treated, cleaned up and properly handled. During
any bulk liquid transfer activity, facility employees are present and employ absorbent booms
around the transfer points. The facility employees are trained according to Occupational,
Safety and Health Administration (OHSA) Hazardous Waste Operations and Emergency
Response (HAZWOPER), EPA and DOT regulations. Spill cleanup materials as required by the
RCRA permit are on site.
University Service Station
The University Service Station is located off Airport Drive, behind the Giles Horney Building.
The Service Station has functioned as a gasoline station and garage for University and State
vehicles since its construction in 1962.
In January 1996, three existing underground storage tanks (UST) were removed and replaced by
a new fuel system. The tanks removed were 3,000- and 10,000-gallon gasoline tanks and a 550-
gallon used oil tank. The removal action was necessary after the existing 10,000-gallon tank
failed the 1995 tank tightness test.
The new USTs included a 550-gallon used oil tank and a 10,000-gallon gasoline tank. Both tanks
are constructed of double walled steel wrapped by fiberglass, and the piping is doubled walled
flex piping. The leak detection system on each UST is provided by a Veeder Root TLS-350,
which consists of interstitial monitoring of void spaces around the tank and piping and daily
automatic tank gauging. The leak detection systems were designed to meet the 1998 UST
standards.
The gasoline storage and distribution system also features a Red Jacket automatic line leak
detector on the UST to detect leaks from the pressurized piping system. The gasoline system is
also equipped with spill and overfill prevention equipment. The overfill prevention equipment
restricts the flow of fuel into the tank when it reaches 95% capacity, and an audible alarm is
sounded. The spill prevention equipment is designed to capture small spills during uncoupling
of the refueling lines from the tanks. In case of a spill, the Service Station keeps a suitable
supply of containment and cleanup supplies, including approximately 100 pounds of absorbent
and two 10-foot absorbent booms.
Above ground storage of ethanol (E85) was initiated in 2007. A 10,000-gallon steel
aboveground storage tank was constructed at a location northwest of the University Service
Station. The tank is a double-walled tank equipped with level measurement and alarm devices,
interstitial monitoring for leak detection and a fill port with dedicated secondary containment.
In September 2007, the Service Station was expanded to four service bays and one vehicle
washing bay. Provisions in the new facility are designed to prevent any petroleum materials
from leaving the facility and entering the environment. These provisions included floors that
slope into the bays to keep spills and wash water within the bays, a three-phase collection and

recycling system for wash water and a 1,500-gallon oil-water separator installed in the wash
bay to collect wastewater generated from the washing processes. The separator is connected
to the sanitary sewer, which receives overflows from the recycle process. The separator is
inspected regularly for oil levels and oil is pumped out of the separator when a percentage of
the total oil storage capacity is reached. Additionally, materials used in vehicle maintenance
and cleaning processes is stored inside of the facility.
The garage operates four inside bays for vehicle oil changes, inspections and minor repairs.
New motor oil usage is approximately 100 gallons per month, and inventory is maintained at
four or fewer 55-gallon drums onsite at any one time. Outdoor storage of materials associated
with the Service Station includes new oil stored in drums within secondary containment and
protected from weather elements, tires within a covered trailer, recyclable metal within a
covered container and used lead acid batteries stored within covered, secondary containment
prior to removal from the site for recycling.
The garage has a built-in, closed gravity feed system that collects and transports the used oil to
the 550-gallon UST. The used oil is regularly collected from the UST for recycling by a
commercial oil company. Used oil filters are punctured and hot drained within the facility for at
least 24 hours before being disposed of properly, while the drained oil is disposed into the used
oil tank and recycled.
Two floor drains in the garage have been permanently closed (cemented in) to prevent any
liquid discharge from entering storm drains. The drains had previously been covered with
magnetic rubber mats.
A parts washer and brake cleaner unit are installed inside the garage, and the spent fluids are
disposed of on a regular basis through a commercial parts washer management service.
The garage is normally open five days a week from 7 a.m. to 4 p.m., while the self-service
gasoline pumps are operational on weekdays from 6 a.m. to 6 p.m. The gasoline pumps
operate on an individual computerized key system. The two main gates outside the Facilities
Services complex are usually locked after 6 p.m.
Surplus Property Warehouse, General Storeroom, Giles Homey Building, Facilities Services
Construction Shops, Radioactive Waste Storage Building and EHS Building
Activities related to these buildings are commercial in nature, generally conducted inside the
buildings and do not impact stormwater. Outdoor storage of materials related to building
operations includes:
• storage of diesel fuel within a 4,000-gallon single-walled steel with ConvaultTM
containment AST installed on the west side of the General Storeroom.
• storage of mineral oil within four transformers approximately 300-1,000 gallons in
size and located outside of the Facilities Services Construction Shops, General

Storeroom, Giles Horney building and the Low-Level Radioactive Waste storage
facility.
• storage of coolants and biocides within a chiller system located west of the General
Storeroom; and
• storage of general refuse in two covered dumpsters on the east side of the Facilities
Services Construction Shops.
Confirmation on the number of outfalls and associated coordinates
There is one outfall associated with permit No. NCS000201, and that outfall is Outfall #001.
The outfall is located at latitude 35.933208 and longitude -79.056416.
Description of industrial activity in each drainage area
All of the previously described industrial activities occur in the same drainage area.
SIC (NAICS) code
The SIC code for UNC-CH is 8221.
An electronic spreadsheet summarizing all of the monitoring data that has been collected
since the effective date of the current permit
See the attached Excel file for this data.
Verification that the information in the renewal application is still complete and correct
The NPDES Stormwater Permit Summary was reviewed on December 2, 2022. The Owner
Name, Owner Type and Owner Affiliation are up to date. Updates to the Owner Contact,
Facility Contact, Permit Contact and Permit Billing Contact were submitted online on December
2, 2022.
All other portions of the 2017 renewal application are still complete and correct.
An explanation of any operational changes since the renewal application was submitted.
The permit renewal application for NPDES Permit No. NCS00201 was submitted to DWQ in June 2017.
Since the time of that submittal, no changes in Industrial Activities have occurred at the permitted
facility.

Attachment 2
Visual Monitoring Summary for Discharge Outfall 001
NPDES Permit No. NCS000201
The University of North Carolina at Chapel Hill
Hazardous Materials Facility
Stormwater
Discharge 10/7/13 3/3/14 10/14/14 5/21/15 12/14/15 1/15/16 2/22/16 4/22/16 12/18/16 3/13/17 10/16/17 4/23/18 12/20/18 4/2/19 12/17/19 6/28/20 1/25/21 2/23/22 11/15/22
Characteristics
light light light light
reddish reddish reddish reddish reddish light light light light light light red red red light red light light light
Color brown brown brown brown brown light tan brown brown brown brown brown brown brown brown brown brown brown brown brown
Odor no no no no no no no no no no no no no no no no no musty no
Clarity 3 3 3 4 3 2 2 2 2 3 2 2 3 3 3 3 2 2 2
Floating Solids 2 1 2 2 2 2 2 2 2 2 2 2 2 2 2 2 2 2 2
Suspended
Solids 3 3 13 3 3 2 12 2 2 2 12 2 3 3 2 12 2 2 2
Foam no no no no no no no no no no no no no no no no no yes yes
Oil Sheen no no no no no no no no no no no no no no no no no no no
Evidence of
Erosion yes yes yes yes yes yes yes no no no no ino no no no no ino no no
Other Obvious
Indicators of
Stormwater
Pollution no no no no no no no no no no no no no no no no no no no
No sample was collected during March 2016, between July 1, 2020 and December 31, 2020 and between July 1, 2021 and December 31, 2021 due to the timing of rainfall events and related laboratory method
holding times and due to periods of drought.

Attachment 1
Analytical Monitoring Summary for Discharge Outfall 001
NPDES Permit No. NCS000201
The University of North Carolina at Chapel Hill
Hazardous Materials Facility
Parameter (unit) 10/7/13 3/3/14 10/14/14 5/21/15 12/14/15 1/15/16 2/22/16 4/22/16 12/18/16 3/13/17 10/16/17 4/23/18 12/20/18 4/2/19 12/17/19 6/28/20 1/25/21 2/23/22 11/15/22
Event Duration
(hours) 9 13 33 4 7 9 18 13 17 20 3 47 41 6 12 2 23 3 7
Total Flow (millions of
gallons) 1.57 0.31 0.93 0.2 0.13 0.22 0.78 1.05 0.16 0.58 0.18 1.23 1.13 0.16 0.27 0.32 0.67 0.15 0.33
Total Rainfall (inches) 1.83 0.36 1.08 0.23 1 0.15 0.25 0.91 1.21 1 0.19 0.68 0.21 1.43 1.31 1 0.19 0.31 0.37 0.78 1 0.18 0.38
Non Polar Oil and
Grease (mg/1) BDL BDL BDL BDL ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND
Total Suspended
Solids (mg/1) 40 90 88 320 212 7.01 89 4.5 22 72.3 25.3 13.4 46 42 64.8 70.4 5.5 26.2 102
pH 7.49 6.49 6.94 6.11 7.07 7.1 7.09 6.99 7.22 7.04 6.86 7.05 6.78 7.6 6.74 6.6 7.14 7.04 6.5
Biological Oxygen
Demand (mg/1) 11 2.5 BDL 14 9.2 ND 8.4 ND 6.32 22.6 ND 11 5.8 36.7 3.5 5.1 2 4.09 14.1
Chemical Oxygen
Demand (mg/1) 19 17 30 83 28.3 13.4 71.3 ND 24.1 87.6 19.7 22.6 13.4 128 45.7 48.7 ND 25.6 ND
New Motor Oil Usage
(gallons/month) 1 100 1 100 100 100 1 100 1 100 1 100 1 100 100 100 1 100 1 100 100 100 1 100 1 100 1 100 100 1 100
BDL=Below Detection Limit
ND=Not Detected at the reporting limit
No sample was collected during March 2016, between July 1, 2020 and December 31, 2020 and between July 1, 2021 and December 31, 2021 due to the timing of rainfall events and related laboratory method
holding times and due to periods of drought.

Ul
The University of North Carolina at Chapel Hill
UNC Department of Environment. Health & Safety
I I" �'' v"� l 1 120 Estes Drive Ext., CB# 1650
�� Al II Chapel Hill, North Carolina 27599-1650
June 23, 2017
Mr. Mike Randall R E C LE I VE D
North Carolina Department of Environmental Quality
Division of Energy, Mining and Land Resources JUN 2 8 2017
Stormwater Permitting Program OEN LAND QUALITY
1612 Mail Service Center STORMWATER t'MWITiNG
Raleigh,NC 27699-1612
Reference: Stormwater Individual Permit Coverage Renewal Application
Hazardous Materials Facility
Permit Number NCS000201
The University of North Carolina at Chapel Hill
Orange County
Dear Mr. Randall:
Enclosed please find the Permit Application for the renewal of NPDES Permit Number
NCS000201. The submittal includes two copies of the required supplemental
information, This supplemental information includes:
Figure 1 Site Location and Topography Map
Figure 2 Site Layout and Topography Map
Figure 3 Hazardous Materials Facility Site Map
Attachment 1 Analytical Monitoring Summary
Attachment 2 Visual Monitoring Summary
Attachment 3 Summary of Best Management Practices at the Permitted Facility
Attachment 4 Short Narrative on Significant Changes in Industrial Activities
Attachment 5 Stormwater Pollution Prevention Plan Certification
If you have any questions or comments concerning the permit renewal application please
contact me at [phone].
Sincerely,
4�"' 0, '
Sharon A. Myers, L. G.
Environmental Compliance Officer
cc: Mary Beth Koza
Steve Parker
Mark Stark

e&"S A- �J
Q�r Permit Coverage
NPDES Permit Number
NCDENR Renewal Application Form N
Ncsaoozo1
National Pollutant Discharge Elimination System
Stormwater Individual Permit
Please provide your permit number in box in the upper right hand corner, complete the information in the space provided
below and return the completed renewal form along with the required supplemental information to the address indicated.
Owner Information * Address to which permit correspondence will be mailed
Owner/Organization Name: The University of North Carolina at Chapel Hill
Owner Contact: Matthew M. Fajack
Mailing Address: 300 South Building, CB# 1000,Chapel Hill, NC 27599-1000
Phone Number: [phone]
Fax Number:
E-mail address: [e-mail]
Facility Information
Facility Name: UNC-CH Hazardous Materials Facility
Facility Physical Address: 1000A Estes Drive Extension Buildings 488 and 531
Chapel Hill NC 27599-1650
Facility Contact: Steve Parker
Mailing Address. 1120 Estes Drive Extension, CB# 1650, Chapel Hill, NC 27599-1650
Phone Number: [phone] RECEIVED
Fax Number:
E-mail address: [e-mail] UN 28 2017
Permit Information OENR-LAND QUALITY
Permit Contact: Sharon Myers STORI&VATER PERK,I I-ING
Mailing Address: 1120 Estes Drive Extension CB# 1650 Chapel Hill NC 27599-1650
Phone Number: [phone]
Fax Number: [phone]
E-mail address: [e-mail]
Discharge Information
Receiving Stream: Unnamed Tributary to Bolin Creek
Stream Class: WS-V; NSW
Basin: Cape Fear
Sub-Basin:
Number of Outfalls: 1
Facility/Activity Changes Please describe below any changes to your facility or activities since issuance of your permit. Attached a
separate sheet if necessary.
none
CERTIFICATION
I certify that I am familiar with the information contained in the application and that to the best of my knowledge and belief
such information is tru , comp and acc ie.
Signature Date
V_C'_ fnr Finanra and Administratinn
Print 4 type name of person signing above Title
SW Individual Permit Coverage Renewal
Please return this completed application form Stormwater Permitting Program
and requested supplemental information to: 1612 Mail Service Center
Raleigh, North Carolina 27699-1612

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Location Contour Interval 10 Feet Datum is Mean Sea Level
U.S.G.S. 7.5 Minute Series Chapel Hill, N.C. Topographic Quadrangle.
SITE LOCATION FIGURE
NPDES PEMT
NCS 000201 AND TOPOGRAPHY
THE UNIVERSITY OF NORTH CAROLINA AT CHAPEL HILL
CHAPEL HILL, NORTH CAROLINA

'151-13-0 02
Figure ' 14,1-A-089 141-A-088
151-C-001 142-D-0 03
151-C-008 151-9-001 1 /
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Site Layout and 8 �i`� _ azardou§1;
irport - p" \; Materials 141-A-065
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1 141 A-018 141-A 015�41-A-068 141 A 083 ;(
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- � 141-A-004 � '� � ` 141 A-026 141-A-051 141-A-OG3 � � �!, 1 h.
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Office / - �� 141 A 005 p
C�. i f^ 141-A-006'. sKr, e t
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1
9 141:D=005 141-A-091
• Storeroom n` _ �_ f
Inlet Unknown Type �,f � t, ?= 141-A 00`1�eS` F\ ; + ,141 A 076 %spr
® I it i . } ; Horne
Grate Inlet ! , s w = 141-A-064 y
141 A045GIles F.
Annex - c
. \ , h
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'.1 Z', 141-A-061� 1
141 D-_003 � _ - ,/, ® 141 A�037 \
y s _ ��-
■ Slab Inlet 141-D-004 141-A-044
�` .`.141,D-006 -
\ 141 B-052
14,1
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i 141'B 3 1
C 141-A 046 r141-B�062`_ 1141-B-057
141-A 041 r
.141 D-002 1:41-A-091 _ v �41 B-064 15' - I 't
• Small Area Drain 141-A-043 --�
"'JI _ _- _ 1.41 B-0s0 141 6=055
■ Junctions Manholes = �,% J / 141-D-001 141-A-048 1 , B 047 �� r
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141-A-082 141=B-058 •i `. 14�21_"
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Stormwater Pipes- Minor Drains /��_ t ' �-- �'�-� F1.41-B=042 + 141-B-020 t t
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Stormwater Pipes - Maim 1411-B-044 141-B-040 5 y;
Center 1„4II
1-D-008 " 41 B-o3sT
Open Channels ~141-D-007 'v -� r; Art i141-B-041 141 B 029 1�,
141-B-035 _ y
�• z Studio 141 B-037- 141 B 028 --
Energy t F 1a1-B o3s '-''`'<
Existing Buidlings 141-C-002 - s 141 B 071 141 E-030
Services
141=C-001 �" I 141-B-031 i
141'B-032 141 6-006 14171371002
Note:This map provides a schematic representation of utilities on campus and is neither complete nor accurate. The GIs maps are a work-in-progress N
and do not contain all known utilities on campus. This map should be used in conjunction with record drawings and site surveys to identify and obtain actual locations
of all existing site utilities. Designers and Consultants utilizing these maps are subject to the standards set forth in the UNC Design&Construction Guidelines. 1 inch=176 feet

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DENR-LAND QUAL\TY
STORM-WATER PERMIT TING
Trench Drain F cilit
Junctions & Manholes 141-A-0
-----------------—--- 0 Vut a '0'
Stormwater Pipes -Main General
Open Channels Storeroom
141 A'
Giles F.
Existing Buidlings
OR
Homey
Note:This map provides a schematic representation of utilities on campus and is neither complete nor accurate. The G|S maps are awo,k-in'nmoreoa N
and do not contain all known utilities on campus. This map should ue used in conjunction with record drawings and site surveys m identify and obtain actual locations �K
vf all existing site utilities. Designers and Consultants utilizing these maps are subject m the standards set forth m the UNC Design 8 Construction Guidelines. 1 inch^1u^feet ��

Attachment 1
Analytical Monitoring Summary for Discharge Outfall 001
NPDES Permit No. NCS000201
The University of North Carolina at Chapel Hill
Hazardous Materials Facility
Parameter(unit) 4/4/13 10/7/13 3/3/14 10/14/14 5/21/15 12/14/15 1/15/16 2/22/16 4/22/16 12/18/16 3/13/17
Event Duration
(hours) 14 9 13 33 4 7 9 18 13 17 20
Total Flow(millions of
gallons) 0.55 1.57 0.31 0.93 0.2 0.13 0.22 0.78 1.05 0.16 0.58
Total Rainfall (inches) 0.64 1.83 0.36 1.08 0.23 0.15 0.25 0.91 1.21 0.19 0.68
Non Polar Oil and
Grease (mg/1) BDL BDL BDL BDL BDL ND ND ND ND ND ND
TPH -Oil and Grease
(mg/0 BDL NA NA NA NA NA NA NA NA NA NA
Total Suspended
Solids(mg/1) 60 40 90 88 320 212 7.01 89 4.5 22 72.3
pH 7.45 7.49 6.49 6.94 6.11 7.07 7.1 7.09 6.99 7.22 7.04
Biological Oxygen
Demand (mg/1) 12 11 2.5 BDL 14 9.2 ND 8.4 ND 6.32 22.6
Chemical Oxygen
Demand (mg/1) 86 19 17 30 83 28.3 13.4 71.3 ND 24.1 87.6
New Motor Oil Usage
(gallons/month) 100 100 100 100 100 100 100 100 100 100 100
BDL=Below Detection Limit
NA =Not Applicable
ND=Not Detected at the reporting limit
No sample was collected during March 2016 due to the timing of rainfall events and laboratory method holding times

Attachment 2
Visual Monitoring Summary for Discharge Outfall 001
NPDES Permit No. NCS000201
The University of North Carolina at Chapel Hill
Hazardous Materials Facility
Stormwater
Discharge 4/4/13 10/7/13 3/3/14 10/14/14 5/21/15 12/14/15 1/15/16 2/22/16 4/22/16 12/18/16 3/13/17
Characteristics
light light light light
light reddish reddish reddish reddish reddish light light light light
Color brown brown brown brown brown brown light tan brown brown brown brown
Odor no no no no no no no no no no no
Clarity 2 3 3 3 4 3 2 2 2 2 3
Floating Solids 2 2 1 2 2 2 2 2 2 2 2
Suspended
Solids 2 3 3 3 3 3 2 2 2 2 2
Foam no no Ino no no no no no no no no
Oil Sheen no no no no no no no no no no no
Evidence of
Erosion yes yes yes yes yes yes yes yes no no no
Other Obvious
Indicators of
Stormwater
Pollution no no no no no no no no no no no

Attachment 3
Summary of Best Management Practices at the Permitted Facility
Best Management Practices
Hazardous Materials Facility(HMF)
The HMF is located south of Estes Drive Extension(see Figure 3). The HMF operates under a
Treatment, Storage and Disposal(TSD)permit pursuant to the Resource Conservation and Recovery Act
(RCRA)authorizing UNC-CH to treat,store and dispose of hazardous waste generated by UNC-CH and
UNC Health Care at this facility. Additionally,mixed radioactive wastes generated at UNC-CH are
picked up on campus and transferred to HMF for storage before being shipped off site for disposal. Best
Management Practices(BMPs)in place at the HMF include:
• The HMF has an automatic fire and smoke detection-alarm system and built-in closed floor sumps or
berms for spill and leak detection and collection.
• As required by the RCRA permit, all hazardous materials are stored inside of the buildings in closed,
labeled,waste-compatible containers. Inspections of the facility contents and equipment are
conducted on a daily and weekly frequency.
• The loading dock in front of the HMF is sloped towards the building and bermed to prevent runoff in
case of a spill,so that any spilled material will stay onsite and can be controlled,treated,cleaned up,
and properly handled. During any bulk liquid transfer activity, facility employees are present and
employ absorbent booms around the transfer points.
• The facility is totally secured with an 8-foot fence, is alarmed and is locked when not occupied.
• Regular good housekeeping practices are followed
• The facility employees are all trained annually according to OSHA HAZWOPER, EPA and DOT
regulations.
• Spill cleanup materials as required by the RCRA permit are on site.
University Service Station
The University Service Station is located off Airport Drive, behind the Giles Homey Building. The
Service Station functions as a gasoline station and garage for University and State vehicles. The service
station contains four service bays and one vehicle washing bay.
BMPs in place at the University Service Station include:
• The garage operates four inside bays for vehicle oil changes, inspections and minor repairs. Service
Station floors slope into the bays to keep spills within the bays. All maintenance activities are
performed in the bays.

• The wash bay has a three-phase collection and recycling system for wash water and a 1,500-gallon
oil-water separator to collect wastewater generated from the washing process. The separator is
connected to the sanitary sewer,which receives overflows from the recycle process. The separator is
inspected regularly for oil levels and oil is pumped out of the separator when a percentage of the total
oil storage capacity is reached.
• Storage of materials used in vehicle maintenance and cleaning processes is conducted inside of the
facility.
• New motor oil usage is approximately 100 gallons per month, and inventory is maintained at four or
fewer 55-gallon drums onsite at any one time. Outdoor storage of materials associated with the
service station includes new oil stored in drums within secondary containment and protected from
weather elements,tires within a covered trailer,recyclable metal within a drum and used lead acid
batteries stored within covered, secondary containment prior to removal from the site for recycling.
• Petroleum is stored in two underground storage tanks(USTs). The tanks include a 550 gallon used
oil tank and a 10,000 gallon gasoline tank. Both tanks are double-walled steel wrapped by fiberglass,
and the piping is doubled-walled flex piping. The leak detection system on each UST is a Veeder
Root TLS-350, which consists of interstitial monitoring of void spaces around the tank and piping and
daily automatic tank gauging. The gasoline system also features a Red Jacket automatic line leak
detector to detect leaks from the pressurized piping system,and each UST is fitted with spill and
overfill prevention equipment. The overfill prevention equipment restricts the flow of fuel into the
tank when it reaches 95%capacity,and an audible alarm is sounded.
• A closed,gravity-feed system for used oil management is installed within the Service Station facility.
The system is used for transferring used oil the oil to the 550-gallon UST. The used oil is regularly
collected for recycling by a commercial oil company. Spills resulting from removal of oil from the
UST are contained and cleaned up with spill response materials stored outside on the north side of the
Service Station.These include a portable drain mat that can be placed over the catch basin inlet
proximal to the tank to prevent a release occurring during emptying of the tank.
• Used oil filter management. Used oil filters are punctured and hot drained for at least 24 hours, and
then oil disposed of into the used oil tank for recycling. The used oil filters are also recycled by a
commercial used oil recycling company.
• E85 (ethanol) is stored in an aboveground storage tank(AST)equipped with secondary containment.
The tank is a 10,000 gallon storage tank located northwest of the Service Station. The tank is double-
walled steel and is supported on steel legs. The leak detection system consists of interstitial
monitoring of void spaces around the tank and visual tank gauging. The AST is equipped with spill
and overfill prevention equipment that provides a visual and audible alarm at 95%capacity. Spill
prevention equipment is provided for the E85 AST as a containment box that is designed to capture
small spills occurring during uncoupling of the refueling line to the tank. Additionally,spill
containment and cleanup materials are stored next to the tank to clean up spills occurring outside of
the containment and prevent the spills from entering the storm drain system.
• Spill response and clean up materials include 100 pounds of absorbent material and two 10-foot
absorbent booms stored in containers on the north side of the Service Station.

• Regular good housekeeping practices are followed.
• Employees are trained annually regarding preventative maintenance,good housekeeping and spill
response and clean up procedures.
• The faculty is inspected twice per year.

Attachment 4
Short Narrative on Significant Changes in Industrial Activities
The previous permit renewal application for NPDES Permit No.NCS00201 was submitted to DWQ in
February 2013. Since the time of that submittal,no changes in Industrial Activities have occurred at the
permitted facility.

STORMWATER POLLUTION PREVENTION PLAN
DEVELOPMENT AND IMPLEMENTATION
CERTIFICATION
North Carolina Division of Energy, Mineral, and Land Resources—Stormwater Permitting
Facility Name: The University of North Carolina at Chapel Hill Hazardous Materials Facility
Permit Number: NCS000201
Location Address: 1000A Estes Drive Extension, Buildings 488 & 531, Chapel Hill, NC 27599-1650
County: Orange
"I certify,under penalty of law,that the Stormwater Pollution Prevention Plan(SPPP)document and all attachments were developed and
implemented under my direction or supervision in accordance with a system designed to assure that qualified personnel properly gather
and evaluate the information required by the SPPP. Based on my inquiry of the person or persons who manage the system, or those
persons directly responsible for gathering the information, the information gathered is, to the best of my knowledge and belief, true,
accurate and complete."
And
I certify that the SPPP has been developed, signed and retained at the named facility location,and the SPPP has been fully implemented
at this facility location in accordance with the terms and conditions of the stormwater discharge permit."
And
"I am aware that there are significant penalties for falsifying information, including the possibility of fines and imprisonment for knowing
violations."
Sign (according to permit signatory requirements) and return this Certification. DO NOT
SEND STORMWATER POLLUTION PREVENTION PLAN WITH THIS CERTIFICATION.
Signature Date p !
M tth w M.Fa'ack 1L_C.for Finance&Administration
P int or type name of person signing above Title
SPPP Certification 10/13