NC0025305_Compliance Evaluation Inspection_20210505

ROY COOPER
Governor
DIONNE DELLI-GATTI
Secretary
S. DANIEL SMITH
Director
George E. Battle, Vice Chancellor
UNC at Chapel Hill
200 E Cameron Ave Cb 1000
Chapel Hill, NC 227599
NORTH CAROLINA
Environmental Quality
May 5, 2021
Subject: Compliance Evaluation Inspection
NPDES Permit NCO025305
Facility Name: UNC Cogeneration Facility
Orange County
Dear Mr. Battle:
On April 22, 2021, Josh Brigham of the Raleigh Regional Office conducted a compliance evaluation
inspection of the treatment facilities located at the UNC Cogeneration Facility. The purpose of this
inspection was to ensure compliance with the subject NPDES permit. During the inspection, the guidance
of Operator in Responsible Charge (ORC) Jamie Hoggard was greatly appreciated.
The UNC Cogeneration Facility is located at 575 W. Cameron Ave. Chapel Hill, North Carolina. The
subject facility is covered under NPDES Permit NC0025305. The subject facility is permitted to
discharge wastewater and stormwater to Morgan Creek, which is classified as a Water Supply -IV Nutrient
Sensitive Water in the Cape Fear Basin.
This NPDES compliance evaluation inspection consisted of the following:
• Review of the NPDES permit;
• Review of the owner/facility information;
• On -site review of records and logs;
• On -site inspection of the wastewater treatment units; and
• On -site inspection of the discharge outfalls.
Findings during the pre -inspection file review were as follows:
1. The current NPDES permit was issued effective July 1, 2012, and expired July 31, 2016. The
Division received the permit renewal application on February 3, 2016.
2. A review of Division records revealed that there are no overdue annual permit fees.
3. A review of the facility's Discharge Monitoring Report (DMR) violation report starting in January
2017 indicated the facility failed to timely submit the April 2017 self -monitoring report. The
Division issued a Notice of Violation for this violation. The Division received monitoring report on
September 1, 2017.
4. The facility has three outfalls. Outfall 001 discharges treated wastewater to Orange Water and Sewer
Authorities' Mason Farm WWTP via city sewer. Division records indicate that the last discharge to
E QRaleighNorth Carolina Department of Environmental Quality I Division of Water Resources
DRegional office 13800 Barrett Drive I Raleigh, North Carolina 27609
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919.791.4200

surface waters from Outfall 001 was on April 4, 2001. Outfalls 002 and 003 discharge from two
separate stormwater ponds that are also covered under the subject permit. A review of electronic
DMRs submitted over the past year indicated that the facility does not discharge from any of the
outfalls and the monitoring reports are marked with no flow indicated.
Findings during the inspection were as follows:
5. A records review indicated that records are being maintained as required by the permit. The
Stormwater Pollution Prevention Plan (SPPP) was reviewed and found to meet permit requirements.
6. The facility analyzes pH, temperature, conductivity, and sludge depth. All other analyses are
performed by Pace.
7. The treatment units described in the permit were found maintained and functioning properly at the
time of inspection.
If you have questions concerning this report please contact Josh Brigham at 919-791-4251 or
ioshua.bri ham ncdenr gov.
Sincerely,
t�' `%99<e
Vanessa E. Manuel, Assistant Regional Supervisor
Water Quality Regional Operations Section
Raleigh Regional Office
Division of Water Resources, NCDEQ
ATTACHMENTS: EPA Water Compliance Inspection Report
Cc: RRO Files
Laserfiche
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North Carolina Department of Environmental Quality I Division of Water Resources
Raleigh Regional Office 13800 Barrett Drive I Raleigh, North Carolina 27609
919.791.4200

United States Environmental Protection Agency
Form Approved.
EPA Washington, D.C. 20460
OMB No. 2040-0057
Water Compliance Inspection Report
Approval expires 8-31-98
Section A: National Data System Coding (i.e., PCS)
Transaction Code NPDES yr/mo/day Inspection Type Inspector Fac Type
1 U 2 15 1 3 I NC0025305 111 12 21/04/22 17 181 r• l 19 L s J 201
211111 I I I I I III I I I I I I I I I III I I I I I I I I I I III I I I I I r6
Inspection Work Days Facility Self -Monitoring Evaluation Rating B1 QA ---- —---------------- Reserved ------ —------- ---
67 701 I 71 Lj 72 ILJ I I t ti I 731 I 174 79 11 1 I I I I80
L—I
Section B: Facility Data
Name and Location of Facility Inspected (For Industrial Users discharging to POTW, also include
Entry Time/Date
Permit Effective Date
POTW name and NPDES permit Number)
08:15AM 21/04/22
12/07/01
UNC Cogeneration Facility
Exit Time/Date
Permit Expiration
P�ration Date
501 W Cameron Ave
Chapel Hill NC 27599
10:OOAM 21/04/22
16/07/31
Name(s) of Onsite Representative(s)Ttles(s)/Phone and Fax Number(s)
Other Facility Data
Name, Address of Responsible Official/Title/Phone and Fax Number
Raymond E Dubose,Energy Services Chapel Hill NC 27599/// Contacted
No
Section C: Areas Evaluated During Inspection (Check only those areas evaluated)
Permit N Operations & Maintenar Records/Reports Self -Monitoring Progran
Sludge Handling Dispo: 0 Facility Site Review Storm Water
Section D: Summary of Finding/Comments (Attach additional sheets of narrative and checklists as necessary)
(See attachment summary)
Name(s) and Signature(s) of Inspector(s) Agency/Office/Phone and Fax Numbers Date
Joshua S Brigham DWR/RRO WQ/919-791-4200/
— 7,,-� 714�
Signature of Management Q A Reviewer ncy/Office/Phone and Fax Numbers Date
7--.,, 21
EPA Form 3560-3 (Rev 9-94) Previous editions are obsolete.
Page#

NPDES yr/mo/day Inspection Type
31 NC0025305 121 21 /04/22 17 18 I C I
Section D: Summary of Finding/Comments (Attach additional sheets of narrative and checklists as necessary)
A records review indicated that all records are maintained as required by the permit. The Stormwater
Pollution Prevention Plan (SPPP) was reviewed and found to meet permit requirements.
The facility analyzes pH, temperature, conductivity, and sludge depth. All other analysis is done by
Pace.
The treatment units described in the permit were found maintained and functioning properly at the time
of inspection. Only spring water was discharging from a junction box to the stream.
Page#

Permit: NCO025305
Inspection Date: 04/22/2021
Owner - Facility: UNC Cogeneration Facility
Inspection Type: Compliance Evaluation
Operations & Maintenance Yes No NA NE
Is the plant generally clean with acceptable housekeeping? M ❑ ❑ ❑
Does the facility analyze process control parameters, for ex: MLSS, MCRT, Settleable M ❑ ❑ ❑
Solids, pH, DO, Sludge Judge, and other that are applicable?
Comment:
Permit
Yes
No
NA NE
(If the present permit expires in 6 months or less). Has the permittee submitted a new
❑
❑
❑
application?
Is the facility as described in the permit?
0
❑
❑
❑
# Are there any special conditions for the permit?
❑
❑
0
❑
Is access to the plant site restricted to the general public?
❑
❑
❑
Is the inspector granted access to all areas for inspection?
❑
❑
❑
Comment
Equalization Basins
Yes
No
NA NE
Is the basin aerated?
❑
0
❑
❑
Is the basin free of bypass lines or structures to the natural environment?
M
❑
❑
❑
Is the basin free of excessive grease?
0
❑
❑
❑
Are all pumps present?
M❑
❑
❑
Are all pumps operable?
M
❑
❑
❑
Are float controls operable?
❑
❑
M
❑
Are audible and visual alarms operable?
❑
❑
0
❑
# Is basin size/volume adequate?
❑
❑
❑
Comment: Used to hold excessive flow during heavy rain events.
Record Keeping
Yes
No
NA
NE
Are records kept and maintained as required by the permit?
0
❑
❑
❑
Is all required information readily available, complete and current?
0
❑
❑
❑
Are all records maintained for 3 years (lab. reg. required 5 years)?
0
❑
❑
❑
Are analytical results consistent with data reported on DMRs?
❑
❑
0
❑
Is the chain -of -custody complete?
❑
❑
0
❑
Dates, times and location of sampling
❑
Name of individual performing the sampling
❑
Results of analysis and calibration
❑
Page# 3

Permit: NCO025305 Owner - Facility: UNC Cogeneration Facility
Inspection Date: 04/22/2021 Inspection Type: Compliance Evaluation
Record Keeping Yes No NA NE
Dates of analysis
❑
Name of person performing analyses
❑
Transported COCs
❑
Are DMRs complete: do they include all permit parameters?
❑
❑
❑
Has the facility submitted its annual compliance report to users and DWQ?
❑
❑
M
❑
(If the facility is = or > 5 MGD permitted flow) Do they operate 24/7 with a certified operatc
❑
❑
0
❑
on each shift?
Is the ORC visitation log available and current?
M
❑
❑
❑
Is the ORC certified at grade equal to or higher than the facility classification?
0
❑
❑
❑
Is the backup operator certified at one grade less or greater than the facility classification'
M
❑
❑
❑
Is a copy of the current NPDES permit available on site?
M
❑
❑
❑
Facility has copy of previous year's Annual Report on file for review?
❑
❑
0
❑
Comment:
Secondary Clarifier
Yes
No
NA
NE
Is the clarifier free of black and odorous wastewater?
0
❑
❑
❑
Is the site free of excessive buildup of solids in center well of circular clarifier?
0
❑
❑
❑
Are weirs level?
❑
❑
0
❑
Is the site free of weir blockage?
0
❑
❑
❑
Is the site free of evidence of short-circuiting?
M
❑
❑
❑
Is scum removal adequate?
❑
❑
0
❑
Is the site free of excessive floating sludge?
❑
❑
0
❑
Is the drive unit operational?
❑
❑
0
❑
Is the return rate acceptable (low turbulence)?
❑
❑
M
❑
Is the overflow clear of excessive solids/pin floc?
❑
❑
0
❑
Is the sludge blanket level acceptable? (Approximately 'Y4 of the sidewall depth)
❑
❑
M
❑
Comment:
Chemical Feed
Yes
No
NA
NE
Is containment adequate?
M
❑
❑
❑
Is storage adequate?
0
❑
❑
❑
Are backup pumps available?
M
❑
❑
❑
Is the site free of excessive leaking?
M
❑
❑
❑
Page# 4

Permit: NC0025305 Owner - Facility: UNC Cogeneration Facility
Inspection Date: 04/22/2021 Inspection Type: Compliance Evaluation
Chemical Feed
Comment:
Yes No NA NE
Page#

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