NC0003468_Sampling Requirements_20171206

t�DUKE
ENERGY.
Dec. 6, 2017
Mr. Jeff Poupart, Section Chief
NC DWR Permitting Section
1617 Mail Service Center'
Raleigh, NC 27699-1617 �
Subject. Sampling Requirements for NPDES Outfalls 102-103-104
Dan River Combined Cycle Station
NPDES Permit #: NC0003468
Rockingham County
Dear Mr. Poupart:
RECEIVEDIDENRJDWR
DEC 1 2 2097
Water resources
Permitting Section
In accordance with requirements in NPDES Permit NC0003468 Part 1 - A.6, A.7, and A.8, Duke Energy
Carolinas, LLC (Duke) will reduce the sampling frequency for the subject outfalls to quarterly beginning
in January 2018. One year of monthly sampling has taken place for these outfalls as required. Duke
hereby requests that DEQ update their BIMS system to accept quarterly samples for these outfalls
in accordance with the terms of the permit.
If there are any questions about this matter, please contact Joyce Dishmon [phone].
Sincerely,
E. Shannon Langley 4K
Lead Environmental Specialist
cc:
Richard Baker via email
Joyce Dishmon/Filenet via email
Charles Weaver
NC DWR 1617 Mail Service Center Raleigh, NC 27699-1617
Sherri Knight, DEQ Winston- Salem Supervisor —
450 West Hanes Mill Road, Suite 300, Winston-Salem, NC 27105