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HomeMy WebLinkAbout20170150 Ver 1_WRC Comments_double baseflow barrels_20170203 Wanucha, Dave From:Chambers, Marla J Sent:Friday, February 03, 2017 12:30 PM To:Slaughter, Johnathan H; Kichefski, Steven L SAW; Marella Buncick (Marella_Buncick@fws.gov); Carpenter,Kristi; Wanucha, Dave Cc:Fuchs, Eileen A; Greg Purvis; Guynn, Jami C; Johnson, Mark G; Hiatt, Todd M; Souther, Zachary S; Dagnino, Carla S Subject:RE: WRC Comments_double baseflow barrels Attachments:Yanbrg16NC197ElkFk2016-02.docx; Re: splitting the base flow of a stream The proposed project splits the base flow of the river into 2 barrels. This practice has been rejected in recent years in Merger and other projects. Attached are comments on another project (in Yancey Co. in 2016) where concerns about this practice were voiced and a brief literature review (mainly FHWA publications) was provided. Also attached is an email conversation from 2014 where I indicated my concerns, making sure I wasn’t over-reaching, and Marella’s reply with her thoughts on it. I received a couple other brief replies in agreement, but received no disagreement. I’m not sure why the news that this practice is inappropriate has not gotten out to all those that design waterway crossings, but we need to try to correct that. I believe a redesign is needed for this project in order to minimize impacts; to maintain the natural dimension, pattern and profile of the waterway through the crossing; and to avoid the negative impacts that can occur from splitting the base flow of the river. If a formal letter to this effect specifically for this project is needed, I will be glad to provide one. Marla Marla Chambers // NCDOT Coordinator Habitat Conservation Program NC Wildlife Resources Commission c/o NCDOT 206 Charter Street Albemarle, North Carolina 28001 office: 704-982-9181 mobile: 704-984-1070 Marla.chambers@ncwildlife.org ncwildlife.org From: Slaughter, Johnathan H Sent: Monday, January 30, 2017 3:46 PM To: Kichefski, Steven L SAW <Steven.L.Kichefski@usace.army.mil>; Marella Buncick (Marella_Buncick@fws.gov) <Marella_Buncick@fws.gov>; Chambers, Marla J <marla.chambers@ncwildlife.org>; Carpenter,Kristi <kristilynn.carpenter@ncdenr.gov>; Wanucha, Dave <dave.wanucha@ncdenr.gov> Cc: Fuchs, Eileen A <eafuchs@ncdot.gov>; Greg Purvis <GPurvis@wetherilleng.com>; Guynn, Jami C <jcguynn@ncdot.gov>; Johnson, Mark G <mgjohnson4@ncdot.gov>; Hiatt, Todd M <tmhiatt@ncdot.gov>; Souther, Zachary S <zssouther@ncdot.gov> Subject: Wilkes Bridge #317 Permit Application Steve, See attached permit application for Wilkes #317. Call if you have questions. Email correspondence to and from this sender is subject to the N.C. Public Records Law and may be disclosed to third parties. 1