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Home My WebLink About20080915 Ver 1_Bridgewater Station Outage_20131010Burdette, Jennifer a From: Galleher, George A [George.Galleher @duke - energy.com] Sent: Thursday, October 10, 2013 2:48 PM To: Oakley, Mark; Goudreau, Chris J.; Tarver, Fred; 'Karen.higgins @ncdenr.gov'; ' Kevin@ americanwhitewater. org' ;'MBLACKBURN1 @CAROLINA.RR.COM'; Brad Boris; mark _cantrel I @fws.gov Cc: Wise Jon; Huff, Peter M; Ziegler, Ty; Wood, Chris J.; Goodfred, David W.; Rash, Jacob M.; Besler, Doug A.; Abney, Michael A Subject: RE: Catawba - Wateree Hydroelectric Project - Bridgewater Station Outage September 30 through October 11 We will be making a recreation release tomorrow Friday, October 111h and again next Friday, October 18th. From: Oakley, Mark Sent: Thursday, October 10, 2013 2:43 PM To: Goudreau, Chris J.; 'Fred Tarver; 'Karen.higgins @ncdenr.gov'; 'Kevin @americanwhitewater.org'; 'M BLACKBURN I @CAROLINA.RR.COM'; Brad Boris; mark_cantrell @fws.gov Cc: Wise, Jon; Huff, Peter M; Ziegler, Ty; Wood, Chris J.; Goodfred, David W.; Rash, Jacob M.; Besler, Doug A.; Galleher, George A; Abney, Michael A Subject: RE: Catawba - Wateree Hydroelectric Project - Bridgewater Station Outage September 30 through October 11 George Galleher just advised me Bridgewater is back in service. Stripers should be exiting the tailrace basin. Matt Mcl<inney has collected the downstream tidbits and will process and transmit the collected data. George will communicate last weekend's rescheduled recreation flow releases. Thanks to all for your cooperation. From: Goudreau, Chris J. [ mailto: chris.goudreau(a)ncwildlife.orq] Sent: Friday, October 04, 2013 1:43 PM To: Oakley, Mark; McKinney, Matt Cc: Wise, Jon; Huff, Peter M; Ziegler, Ty; Wood, Chris J.; Goodfred, David W.; Rash, Jacob M.; Besler, Doug A. Subject: RE: Catawba - Wateree Hydroelectric Project - Bridgewater Station Outage September 30 through October 11 Matt, Mark et al., Yes, thanks to all for the quick provision of the data. We agree that another interim reading is not necessary. We look forward to reviewing the complete dataset after the outage is over. Chris From: Oakley, Mark [ maiIto: Mark.Oakley()duke- energy.com] Sent: Friday, October 04, 2013 10:44 AM To: McKinney, Matt; Goudreau, Chris J. Cc: Wise, Jon; Huff, Peter M; Ziegler, Ty Subject: RE: Catawba - Wateree Hydroelectric Project - Bridgewater Station Outage September 30 through October 11 Matt, thanks for the exceptional turn - around on this data and for the supporting information you included. Chris, my proposal is we not read the tidbits again during the outage, but leave them deployed to collect data throughout this outage. Afterwards, we can summarize and forward to you all the data collected. Please let me know when you have had a chance to review the data and results and whether you agree with this approach. Thanks. From: McKinney, Matt [ mailto: Matt. McKinney() hdrinc.com] Sent: Friday, October 04, 2013 9:29 AM To: 'Goudreau, Chris J.' Cc: Wise, Jon; Oakley, Mark; Huff, Peter M; Ziegler, Ty Subject: FW: Catawba - Wateree Hydroelectric Project - Bridgewater Station Outage September 30 through October 11 Hi Chris, Per Mark's note below, please find attached the Linville monitoring results from Oct 1 (AM) — Oct 3 (AM). The file includes continuous, 15 -min temperature data (Onset HOBO TidbiTs ®) as recorded at the 5 sites, in -situ hydrolab (model MSS Hach Hydrolab®) readings taken at each site, and a map of the monitoring sites. Water temperature approached 23 °C during the first day, but only at the Bridge #1 site. As you may know, the forecast is calling for a cooling trend with a chance of rain late in the weekend into early next week. Please let us know if you have any questions /concerns. Thanks, Matt MATT MCKINNEY HDR Engineering, Inc. of the Carolinas Fisheries Scientist, Hydropower Services 440 S Church Street, Suite 1000 1 Charlotte, NC 28202 704.248.3684 1 c: 704.562.2430 matt.mcl<inney @hdrinc.com I hdrinc.com From: Oakley, Mark [ maiIto: Mark.Oakley()duke- eneray.com] Sent: Wednesday, September 18, 2013 8:22 AM To: Oakley, Mark; 'Goudreau, Chris J.'; 'Mark Cantrell'; 'Fred Tarver (fred.tarver(a )ncdenr.g_ov)'; 'Karen.higgins @ncdenr.gov'; 'Kevin @americanwhitewater.org'; 'MBLACKBURNI @CAROLINA.RR.COM'; Boris, Brad Cc: Galleher, George A; Wise, Jon; McKinney, Matt Subject: RE: Catawba - Wateree Hydroelectric Project - Bridgewater Station Outage September 30 through October 11 Based on feedback received, the following is Duke Energy's plan for incorporating consultation comments as we execute the Bridgewater Unit 2 isolation valve outage. In addition, Duke Energy will utilize this same outage to implement a portion of the Bridgewater Embankment Seismic Stability (ESSI) Project. During this same outage, Duke Energy will install a cofferdam in the river between the toe of the existing Bridgewater Dam and the new Bridgewater powerhouse. This work also requires flow releases to be minimized, so doing both the ESSI cofferdam and the Unit 2 isolation valve work simultaneously will avoid a second low -flow condition in the river. FYI. the start of the outage has been changed to October 1. No change has been made to the completion date at this time. 1. The outage as- scheduled will impact two days (one weekend) of recreation flow releases in October. Recreation flow replacement dates will be on Fridays in October, if possible, but before the end of 2013. Duke Energy will communicate these changes via the web and phone information systems as well as direct contacts to Trout Unlimited, Carolina Canoe Club, and the NC Wildlife Resources Commission. During the duration of the outage, Duke Energy will record water temperature in the Linville River reach below the powerhouse and in the reach below the confluence of Muddy Creek /Catawba River in the same locations as the 2011 (penstock tie -in) outage using continuous instream data loggers. The data loggers will be read on the third day of the outage. The temperature readings collected will be forwarded by email to Chris Goudreau (NC Wildlife Resources Commission) within a day after they are collected. If temperatures are not a concern and are stable, then no further data downloads will be needed. If temperatures are climbing, we will consult with NCWRC to determine what, if any additional data downloads may be needed. 3. Duke Energy will consult with Chris Goudreau regarding any observed aquatic species mortalities and the need for replacement or mitigation. 4. Duke Energy will operate the Catawba Dam Minimum flow valve at its maximum capacity of 75 cfs. 5. Duke Energy has contacted Brad Boris at the Town of Morganton who anticipates no issues but wishes to be informed of any changes. From: Oakley, Mark Sent: Thursday, July 18, 2013 4:54 PM To: ' Goudreau, Chris J.'; 'Mark Cantrell'; 'Fred Tarver (fred.tarver(a )ncdenr.g_ov)'; 'Karen.higgins @ncdenr.gov'; 'Dick Christie (christiedCa)dnr.sc.q_ov)'; 'prestohs @dhec.sc.gov'; Kevin(a)americanwhitewater.orq; ' M BLACKBURN 1 @CAROLINA. RR.COM' Cc: Galleher, George A Subject: Catawba - Wateree Hydroelectric Project - Bridgewater Station Outage September 30 through October 11 Duke Energy is planning an outage at Bridgewater Hydro in order to inspect and hopefully repair the Bridgewater Unit 2 Turbine Isolation Valve (TIV). The outage is planned to start on September 30th and run for 12 days ending on October 11th. Depending on the issues we find with the Unit 2 TIV this outage may be a shorter duration. During this time the penstock delivering water to the powerhouse will have to be drained and no water will be able to be released from any of the three units or the powerhouse ring jet valve. We will operate the ring jet valve at the Catawba Dam, so flows in the Catawba Bypass will not be affected. Flows below the Muddy Creek confluence downstream of the powerhouse will not be affected provided we operate the Catawba Dam ring Jet valve at its full capacity (approximately 75 cfs). Also, the reservoir level should remain within its normal range (assuming of course no extreme rainfall events). If we successfully meet our schedule, we will only impact one weekend of recreation flow releases. No impacts to flow releases or reservoir levels at Catawba - Wateree hydro stations in South Carolina are likely. I am making this notification and initiating consultation in accordance with the Catawba - Wateree Comprehensive Relicensing Agreement (CRA) Maintenance and Emergency Protocol (MEP). Per the MEP (see CRA Appendix D), this event is considered to be Condition A.1- Scheduled Hydro Unit Maintenance. Please respond at your earliest convenience. Thank you. Email correspondence to and from this senc:l c is srthject to the N.C. Prihlic Recorc:is Law and may he cEisclose {:I to thirc:l parties.