20080915 Ver 1_C-W Lookout Shoals Completed Assessment_20161102

Strickland, Bev
From:Finley, Keith A <[e-mail]>
Sent:Wednesday, November 02, 2016 8:39 AM
To:Tarver, Fred; Higgins, Karen; Goudreau, Chris J.; Bryan Tompkins
Cc:Oakley, Mark; Galleher, George A; Dunn, Lynne; Jon Knight; Lail, Mike; Fragapane, Phil
Subject:Duke Energy - C-W Lookout Shoals Hydro - Completed Assessment of Generation
Flows and Project Compliance Enhancements
Attachments:2016-11-02 Letter to FERC Assessment of Leakage and Min Flow at Lookout Shoals
Development.pdf
Good Morning,

Please recall that Duke Energy had committed to devising a method to update and improve our options for
low flow assessments at the Catawba-Wateree Lookout Shoals Development, for the purpose of better
ascertaining compliance of our FERC License Continuous Minimum Flow requirement. Following up on the
study plan we had proposed in August, on October 3, 2016, we completed a series of tailrace flow
measurements in the Lookout Shoals tailwaters under several planned generation scenarios. Theses flow
measurements were then used to calibrate a recently installed tailwater USGS gage height sensor. The
developed flow-gage height rating curves cover all except some of the higher flows anticipated from the
Development, which of course are not germane to our Continuous Minimum Flow requirement. Finally, we
have incorporated this improved flow assessment method into our Project Compliance Tool, which tracks
compliance with our License requirements 24/7/365. The attached letter, which summarizes this effort and
provides some additional detail, is being e-filed with the FERC today.

Please advise if you have any questions or need for additional information.

Best regards,

Keith Finley
Project Manager II
Duke Energy Water Strategy & Hydro Licensing
O: 980.373.3726

C: 704.533.2960

From: Finley, Keith A
Sent: Tuesday, September 27, 2016 5:58 PM
To: Tarver, Fred
Cc: Higgins, Karen; Goudreau, Chris J.; Bryan Tompkins ([e-mail]); Oakley, Mark; Galleher, George A;
Dunn, Lynne; Jon Knight ([e-mail]); Lail, Mike
Subject: Re: Proposed Study Plan to Measure Various Operational Flows From Lookout Shoals Hydro

Hi Fred,

Thank you for reviewing the work plan. We will be sure to copy to all with our findings in our subsequent reporting to
the FERC.
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Regards,
Keith

Sent from my iPhone

On Sep 27, 2016, at 10:48 AM, Tarver, Fred <[e-mail]> wrote:

*** Exercise caution. This is an EXTERNAL email. DO
NOT open attachments or click links from unknown
senders or unexpected email. ***

Keith,
I communicated with Karen Higgins, head of the 401 Unit, and we agreed that the plan attached to your
email seems necessary and reasonable as proposed. Please provide us with the final results.
Thanks,
Fred

-----
Fred R Tarver III
Division of Water Resources
NC Department of Environmental Quality
1611 Mail Service Center
Raleigh. NC 27699-1611

Email: [e-mail]
Phone: [phone]
Fax: [phone]

(
E-mail correspondence to and from this address may be subject to the North Carolina Public Records Law and disclosed to third

)
parties.

From: Finley, Keith A \[mailto:[e-mail]\]
Sent: Tuesday, August 23, 2016 3:45 PM
To: Higgins, Karen <[e-mail]>; Tarver, Fred <[e-mail]>; Goudreau,
Chris J. <[e-mail]>; Bryan Tompkins ([e-mail])
<[e-mail]>
Cc: Oakley, Mark <[e-mail]>; Galleher, George A <George.Galleher@duke-
energy.com>; Dunn, Lynne <[e-mail]>; 'Jon Knight
([e-mail])' <[e-mail]>; Lail, Mike <Mike.Lail@duke-
energy.com>
Subject: Proposed Study Plan to Measure Various Operational Flows From Lookout Shoals Hydro

Good afternoon,

In response to a June 6, 2016 request Duke Energy received from the FERC, we are proposing a study
plan to undertake a series of flow measurements in the tailwaters of the Lookout Shoals Hydro
(Catawba-Wateree Hydro Project). Study implementation is tentatively scheduled for October 3. The
results of the planned flow measurements will allow us to calibrate a tailrace level gage that was
included at a recently installed USGS water quality (water temperature and dissolved oxygen)
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monitoring site. The development of a rating for the level gage is expected to improve the accuracy
with which we measure hydro generation flows below the Lookout Shoals Hydro.

By copy of this letter, we are respectfully requesting any comments your agency may want to provide
relative to this proposed effort, as outlined on the attached document. Thank you in advance for your
input on this matter.

Best regards,

Keith Finley
Project Manager II
Duke Energy Water Strategy & Hydro Licensing
O: 980.373.3726
C: 704.533.2960
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