NC0027359_correspondence_20221117

TVA
TENNESSEE
VALLEY
AUTHORITY
1101 Market Street, BR 2C, Chattanooga, Tennessee 37402
Sent Via Electronic Transmittal
November 17, 2022
Mr. John Hennessy ([e-mail])
Compliance and Expedited Permits Supervisor
North Carolina Department of Environmental Quality (NDEQ)
217 West Jones Street
Raleigh, North Carolina 27603
Dear Mr. Hennessy:
TENNESSEE VALLEY AUTHORITY (TVA) — NORTH CAROLINA HYDROELECTRIC
FACILITIES — REQUEST FOR WAIVER OF COMPOSITE SAMPLING AND ANALYSIS
REQUIREMENTS FOR NATIONAL POLLUTANT DISCHARGE ELIMINATION SYSTEM
(NPDES) PERMIT RENEWALS
TVA requests that 24-hour composite sampling and analysis requirements on EPA Form 2E be
waived for upcoming NPDES permit renewal sampling at the hydroelectric facilities listed below.
The waiver would allow TVA to utilize grab samples as representative samples for the main
station sump and cooling water discharges at the following sites with NPDES permit renewal
application dates in 2023. TVA believes that "grab" sampling is allowed in Title 40 CFR §
122.21(g)(7)(iv) for these types of facilities.
TVA also requests that sampling be waived for Draft Tube Unwatering Operations (Outfall 002)
due to infrequency of discharges. Draft Tube Unwatering Operations typically occur only during
outages (approximately every two years) and consists of river water that is unlikely to contain
any contaminants from plant operations.
Hydro Plant
NPDES Permit No.
Application Due Date
Chatuge (CTH)
NC0027332
3/4/2023
Fontana (FNH)
NC0027341
3/4/2023
Hiwassee (HIH)
NC0027359
3/4/2023
TVA appreciates your consideration of this waiver request. If you have questions or would like
additional information, please contact Callan Pierson by email at [e-mail].
Sincerely,
1J-i)e--,---
Paul J. Pearman
Senior Manager
Water Permits, Compliance, and Monitoring