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HomeMy WebLinkAbout20080915 Ver 1_PROMPT ATTENTION REQUESTED - DWR_20161129 Strickland, Bev From:Tarver, Fred Sent:Tuesday, November 29, 2016 2:05 PM To:Oakley, Mark; Higgins, Karen; Goudreau, Chris J.; bryan_tompkins@fws.gov; Larsen, Cory Cc:Lineberger, Jeff; Fragapane, Phil; Finley, Keith A; robert.ballantine@ferc.gov Subject:RE: YOUR PROMPT ATTENTION REQUESTED - Advance notification of unit repairs at C-W Project Lookout Shoals Hydro Mark, The Division of Water Resource’s response is as follows: For the record, as reported in Duke Energy’s submittal to FERC on 11-2-2016, the 53 cubic feet per second (cfs) is the mean value based on ADCP measurements (N = 8, range = 19 to 80 cfs). Mean dam seepage is 5.0 cfs (N = 2, Range = 4.9 and 5.1 cfs). Duke should monitor the USGS gage to assure that the flow does not drop below 53 cfs, based on the corresponding gage height of 9.25 feet. Although an average daily flow is not a suitable regime for establishing a permanent Critical Flow, the mitigating factor is that this release schedule is planned for less than the month of December and is higher than the instantaneous Critical Flow of 80 cfs. The two, 1-hr pulse flows, as reported in the 11- 18-2016 FERC submittal, should be equally spaced if possible to equitably distribute the daily average flow. This should resolve DWR’s concerns. Thank you for the opportunity to respond. Fred Fred R Tarver III Instream Flow Program Supervisor Department of Environmental Quality 919-707-9029 office fred.tarver@ncdenr.gov Division of Water Resources 1611 Mail Service Center Raleigh NC 27699-1611 Email correspondence to and from this address is subject to the North Carolina Public Records Law and may be disclosed to third parties. From: Oakley, Mark \[mailto:Mark.Oakley@duke-energy.com\] Sent: Tuesday, November 29, 2016 11:20 AM To: Higgins, Karen <karen.higgins@ncdenr.gov>; Tarver, Fred <fred.tarver@ncdenr.gov>; Goudreau, Chris J. 1 <chris.goudreau@ncwildlife.org>; bryan_tompkins@fws.gov Cc: Lineberger, Jeff <Jeff.Lineberger@duke-energy.com>; Fragapane, Phil <Phil.Fragapane@duke-energy.com>; Finley, Keith A <Keith.Finley@duke-energy.com>; robert.ballantine@ferc.gov Subject: YOUR PROMPT ATTENTION REQUESTED - Advance notification of unit repairs at C-W Project Lookout Shoals Hydro Thank you for taking a moment to quickly reply to this note. The Federal Energy Regulatory Commission has contacted me today to request additional agency documentation regarding the upcoming repairs at the Lookout Shoals Development. Specifically, Maintenance and Emergency Protocol Condition B.1 – Maintenance of the Normal Meals of Providing Minimum Flow Release (Scheduled), item 3 states if Critical Flows cannot be exceeded 100% of the time, then Duke Energy will work with resource agencies to monitor impacts and replace species mortalities. In this case, instantaneous minimum flows will drop below the 80 cfs Critical Flow for this development, but not less than approximately 53 cfs (documented leakage and seepage) while the average daily flow of approximately 90 cfs will exceed the Critical Flow release. To-date no agency has expressed the need for additional consultation, monitoring, or mortality replacement in this matter, but the FERC has requested a documented affirmation from resource agencies as to whether or not they agree with Duke Energy’s approach to this maintenance event, and monitoring impacts and replacing mortalities are not required. With apologies for the short deadline, please send me your response as soon as possible, but no later than Wednesday noon. I’ll then file your responses with the FERC so they can issue an approval letter before the scheduled start of unit repairs on Monday Dec 5. Thank you. Please contact me if there ae further questions. From: Oakley, Mark Sent: Friday, November 18, 2016 11:41 AM To: 'Karen.higgins@ncdenr.gov'; 'fred.tarver@ncdenr.gov'; 'chris.goudreau@ncwildlife.org'; bryan_tompkins@fws.gov; Herrin, Randy C; Lewis, Greg D; Fragapane, Phil; Finley, Keith A; Rice, Garry S; Lineberger, Jeff; Dunn, Lynne; Galleher, George A (George.Galleher@duke-energy.com) Subject: Advance notification of unit repairs at C-W Project Lookout Shoals Hydro The attached notification was filed this morning with the Federal Energy Regulatory Commission in accordance with Maintenance and Emergence Protocol Condition B.1 – Maintenance of the Normal Means of Providing Minimum Flows (Scheduled). The described work is to begin December 5. Agencies are requested to please advise if further consultation is necessary. Thanks, all. 2