20030147 Ver 2_Other Documents_20160614

DUKE
(aa //EIY
ENERGY.
June 14, 2016
The Honorable Kimberly D. Bose, Secretary
Federal Energy Regulatory Commission
888 First Street N.E.
Washington, DC 20426
Re: Duke Energy Progress, LLC
Yadkin -Pee Dee Hydroelectric Project No. 2206
Article 401(C) Follow -Up Notification
Dear Secretary Bose:
Duke Energy Corporation
526 South Church Street
Marl Code: EC12Y
Charlotte, NC 2820,2
On May 11, 2016, Duke Energy Progress, LLC (Duke Energy) notified the Federal Energy
Regulatory Commission (FERC or Commission) of a planned deviation from the Yadkin -Pee
Dee Hydroelectric Project (Project) minimum flow requirement per Article 401(c) of the New
License. A station outage was required on May 23, 2016, and again on June 10, 2016 to
complete transmission relay upgrade work associated with automating the operations of the
Blewett Falls Development.
During both outage events, Duke Energy operated the Tillery Station upstream of Blewett Falls
in such a way that the minimum flow for Blewett Falls was provided with spilling over the
Blewett Falls Spillway thus preventing a deviation of the minimum flow requirements.
On May 23rd, the station outage began at 0608 hours and Units 4, 5 and 6 were returned to
service at 1821 hours. The minimum flow required by the New License at that time (May 16 -
May 31) was 1,800 cubic feet per second (cfs). The minimum flow recorded at the downstream
USGS Gage (No. 02129000 Pee Dee River Near Rockingham, NC) during the station outage was
18,340 cfs. This was due in part to a high inflow event that occurred the weekend before the
outage.
On June 10t', the station was taken off-line at 0720 hours and returned to service at 1904 hours.
The minimum flow recorded at USGS Gage No. 02129000 during this period was 3,840 cfs (a
minimum flow of 1,200 cfs is required June 1 � January 31). Graphs of the discharge measured
at the USGS Gage are enclosed for your information.

June 14, 2016
Kimberly D. Bose, Secretary
Page 2
Please contact Tami Styer at [phone] (Tami.Styer@duke-energ_y.com) if you have
questions or required additional information.
Sincerely,
Jeffrey G. Lineberger, P.E.
Director, Water Strategy and Hydro Licensing
Duke Energy
Enclosure: Graphs of USGS Gage No. 02129000 Discharge
cc: Chris Goudreau � NC Wildlife Resources Commission
John Ellis � US Fish and Wildlife Service
Fred Tarver, Karen Higgins, Cory Larsen � NC Division of Water Resources
Fritz Rohde � National Marine Fisheries Service
Dick Christie � SC Department of Natural Resources
Heather Preston � SC Department of Health and Environmental Control
Tami Styer � Duke Energy
Phil Fragapane� Duke Energy
George Galleherl Duke Energy
Lynne Dunnf Duke Energy
David Scotty Duke Energy

Enclosure
Graphs of USGS Gage No. 02129000 Discharge

Blewett Falls Station Outage - May 23, 2016
USGS Gage No. 02129000 - Discharge (cfs)
USGS 02129000 PEE DEE R NR ROCKINGHAM, NC
30000
20000
........ . . . ................. -------
z. . . ........
10000
ai
L
4
4600
00.-08 04:00 08:00 12:00 16:00 20:00 00:00
May 23 May 23 May 23 May 23 May 23 May 23 May 2d
2016 2016 2016 2016 2016 2016 2016
---- Provisional Data Subject to Revision ----
Median daily statistic (88 years) Discharge
Blewett Falls Station Outage - June 10, 2016
USGS Gage No. 02129000 0 Discharge (cfs)
USGS 02129000 PEE DEE R NR ROCKINGHAM, NC
6000
r
5500
U---- -- --------------
.............
L 5000
. ........ ..
m
4500
4000
ti
L 3500
O
3000
00:00 04:00 08:00 12:00 16:00 20:00 00:00
Jun 19 Jun 16 Jun 10 Jun 10 Jun 10 Jun 10 Jun 11
2016 2016 2016 2016 2016 2016 2016
---- Provisional Data Subject to Revision ----
Median daily statistic (88 years) ----- Discharge