NC0004979_316(b) Compliance Report_20220201

(� DUKE Allen Steam Station
253 Plant Allen Roao
ENERGY. Belmont, NC 28012
RECEIVED
January 24, 2022 F1 0 1 2022
North Carolina Department of Environmental Quality NCDEQIDWR/NPDES
Division of Water Resources
1617 Mail Service Center
Raleigh NC 27699-1617
RE: Duke Energy Carolinas, LLC
Allen Steam Station, NPDES Permit NC0004979
Part A. (22.) Clean Water Act Section 316(b) Submittal
Dear Sir or Madam:
In accordance with the provisions of NPDES Permit NC0004979, Part A. (22.),following and enclosed is
our timely submittal of the requested Clean Water Act § 316(b) information for the Allen Steam Station.
Specifically,the Department has requested that the submitted 316(b) information be provided by January
31, 2022. We believe that this submittal completely satisfies this obligation.
As detailed in the enclosed reports, the Allen Steam Station meets Best Technology Available for
impingement and entrainment through a system of technologies, including flow reductions resulting from
the retirement of three of the five Allen units during 2021.
The system of technologies alternative is justified due to the design of the intake structure and the intake
flow reductions associated with the retirements of Units 2, 3, and 4.
Please contact Michael Smallwood ([e-mail], 704-382-4117)or Elizabeth
Glenn ([e-mail], 980-737-0530) if there are any questions regarding this
submittal.
Sincerely,
6
Jeff Flana
General Manager, Allen Steam Stati
Attachment: 316(b) study reports for Allen Steam Station (pdf)
Cc: North Carolina Department of Environmental Quality (pdf and hardcopy)
Water Sciences Section
1623 Mail Service Center
Raleigh NC 27699-1623