NCG500126_Compliance Evaluation Inspection_20210622

SENT VIA ELECTRONIC MAIL ONLY: NO HARD COPY WILL BE MAILED.

June 22, 2021

Preston H Pierce
Duke Energy Progress LLC
Email: [e-mail]

SUBJECT: Compliance Inspection Report
Tuskasegee Hydroelectric Station
NPDES WW Permit No. NCG500126
Jackson County

Dear Permittee:

The North Carolina Division of Water Resources conducted an inspection of the Tuskasegee
Hydroelectric Station on 6/17/2021. This inspection was conducted to verify that the facility is operating
in compliance with the conditions and limitations specified in NPDES WW Permit No. NCG500126. The
findings and comments noted during this inspection are provided in the enclosed copy of the inspection
report entitled "Compliance Inspection Report".

There were no significant issues or findings noted during the inspection and therefore, a response to this
inspection report is not required.

If you should have any questions, please do not hesitate to contact me at 828-296-4500 or via email at
[e-mail].

Sincerely,

Stephanie Williams, Environmental Specialist
Water Quality Regional Operations Section
Asheville Regional Office
Division of Water Resources, NCDEQ

ATTACHMENTS: Inspection Report

Ec: Laserfiche

DocuSign Envelope ID: 55FBF62F-95F3-4290-9DA2-A38685A779BB
EPA
United States Environmental Protection Agency
Washington, D.C. 20460
Water Compliance Inspection Report
Form Approved.
OMB No. 2040-0057
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 N 52 NCG500126 21/06/17 C S31112171819 20
21 66
Inspection Work Days Facility Self-Monitoring Evaluation Rating B1 QA ----------------------Reserved-------------------
N67707172 73 74 75 80
Section B: Facility Data
Name and Location of Facility Inspected (For Industrial Users discharging to POTW, also include
POTW name and NPDES permit Number)
Tuskasegee Hydroelectric Station
NC Hwy 107
Tuckasegee NC 28783
Entry Time/Date Permit Effective Date
Exit Time/Date Permit Expiration Date
01:15PM 21/06/17 20/12/11
Name(s) of Onsite Representative(s)/Titles(s)/Phone and Fax Number(s)
///
Other Facility Data
02:20PM 21/06/17 25/11/30
Name, Address of Responsible Official/Title/Phone and Fax Number
W Marcus Pitts,41 Mountain Farm Ln Tuckasegee NC 28783//864-304-9703/Contacted
No
Section C: Areas Evaluated During Inspection (Check only those areas evaluated)
Permit Operations & Maintenance Records/Reports Self-Monitoring Program
Facility Site Review Effluent/Receiving Waters
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
Stephanie A Williams DWR/ARO WQ/828-296-4500/
Signature of Management Q A Reviewer Agency/Office/Phone and Fax Numbers Date
EPA Form 3560-3 (Rev 9-94) Previous editions are obsolete.
Page#1
DocuSign Envelope ID: 55FBF62F-95F3-4290-9DA2-A38685A779BB
6/22/2021
6/22/2021
NPDES yr/mo/day
21/06/17
Inspection Type
C3111218
1
Section D: Summary of Finding/Comments (Attach additional sheets of narrative and checklists as necessary)
Stephanie Williams, with the Asheville Regional Office, conducted a Compliance Evaluation Inspection
of the Tuskasegee Hydroelectric Station on June 17, 2021. The inspection was conducted to
determine if the system is being operated and maintained in compliance with General NPDES Permit
No. NCG500000. Marcus Pitts (Lead EHS Professional) was present during the inspection. No
deficiencies were noted during the inspection.
The Tuskasegee Hydroelectric Station is an unmanned station consisting of one turbine. The unit is
remotely cycled on and off as needed and typically runs in tandem with the Thorpe Hydroelectric
Plant upstream. The unit was not running at the time of the inspection.
The powerhouse is located approximately 1 mile downstream of the dam. Water feeds the turbine
through a tunnel beneath the mountain, with the intake at the far end of the dam. The water intake
contains a rake which automatically rakes debris from the intake area and off the bar screen. The
distance between the lake and the powerhouse offers a change in elevation which provides greater
head pressure, thereby increasing the capacity of the turbine to produce mechanical energy for
conversion to electrical energy.
There is one sump at the facility with a skimmer and oil detection. If oil is detected the system triggers
an alarm at the Duke operated Regulated Renewables Operations Center (RROC) and operators are
notified. Spill response guidance is outlined in the Spill Prevention and Response Plan.
At the time of the inspection the tailrace was free of foam and debris.
The sampling locations are appropriate and representative.
NCG500126 17 (Cont.)
Page#2
DocuSign Envelope ID: 55FBF62F-95F3-4290-9DA2-A38685A779BB
Permit:NCG500126
Inspection Date:06/17/2021
Owner - Facility:
Inspection Type:
Tuskasegee Hydroelectric Station
Compliance Evaluation
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?
# Are there any special conditions for the permit?
Is access to the plant site restricted to the general public?
Is the inspector granted access to all areas for inspection?
The certificate of coverage took effect 12/11/2020 and expires 11/30/2025.Comment:
Operations & Maintenance Yes No NA NE
Is the plant generally clean with acceptable housekeeping?
Does the facility analyze process control parameters, for ex: MLSS, MCRT, Settleable
Solids, pH, DO, Sludge Judge, and other that are applicable?
Comment:
Effluent Pipe Yes No NA NE
Is right of way to the outfall properly maintained?
Are the receiving water free of foam other than trace amounts and other debris?
If effluent (diffuser pipes are required) are they operating properly?
Comment:
Effluent Sampling Yes No NA NE
Is composite sampling flow proportional?
Is sample collected below all treatment units?
Is proper volume collected?
Is the tubing clean?
# Is proper temperature set for sample storage (kept at less than or equal to 6.0
degrees Celsius)?
Is the facility sampling performed as required by the permit (frequency, sampling type
representative)?
Comment:
Upstream / Downstream Sampling Yes No NA NE
Is the facility sampling performed as required by the permit (frequency, sampling type,
and sampling location)?
Page#3
DocuSign Envelope ID: 55FBF62F-95F3-4290-9DA2-A38685A779BB
Permit:NCG500126
Inspection Date:06/17/2021
Owner - Facility:
Inspection Type:
Tuskasegee Hydroelectric Station
Compliance Evaluation
Upstream / Downstream Sampling Yes No NA NE
Comment:
Page#4
DocuSign Envelope ID: 55FBF62F-95F3-4290-9DA2-A38685A779BB
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