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HomeMy WebLinkAbout10-23-2009 Preliminary Gallatin Valley Food Bank review CITY OF BOZEMAN WETLAND REVIEW BOARD October 26th, 2009 Andy Epple AICP Department of Planning and Community Development P.O. Box 1230 Bozeman, Montana 59771-1230 st RE: October 21, 2009, Wetland Review Board Meeting; Preliminary Gallatin Food Bank Review Dear Andy, The City of Bozeman Wetland Review Board met on October 21st, 2009, for a preliminary review of the renovation of the Gallatin Valley Food Bank. All five members of the Wetland Review Board (WRB) were present : Lynn Bacon, Brian Sandefur, Cyndi Crayton, William Kleindl, and Steve O’Neil - along with Purcie Bennett whom has applied for the WRB position vacated by Guy Alsentzer. Also present was Melanie Dyba of Bridger Engineers, Inc., representing the Gallatin Valley Food Bank, and Kerry Thorpe of the City Planning Department. st Following preliminary discussion at that October 21, 2009, WRB meeting, I spoke with Dustin Johnston of the Planning Department about the two specific issues that the WRB had concerning the proposed detention basin at the site – the physical location, and size/shape. Dustin assured me that prior to final review of the project, surface water runoff routing calculations would be done to insure that the basin was sized properly in order to minimize runoff overflow to Bozeman Creek. If this proposed storm water detention basin is sited as shown in the preliminary draft (just south of the eastward terminus of Bond Street where it intercepts Bozeman Creek), the WRB suggests the following: 1.) that some type of wetland vegetation is included within the detention basin to promote surface water contaminant filtering, 2.) that it be deepened approx 1-ft more than shown in the draft reviewed by the WRB in order to allow wetland vegetation roots a “shorter reach” to groundwater, and 3.) that the bottom of the proposed detention basin be constructed with porous gravels and sands to increase percolation rates - reducing the likelihood of direct overflow of storm water runoff from this detention basin to Bozeman Creek Sincerely, Steve O’Neil Wetland Review Board Chair cc: Kerry Thorpe, Dustin Johnston, P.O. Box 1230 Bozeman, Montana 59771-1230