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ACN 6X 44 <br /> CONSERVATION TT <br /> 1318 McKay[give NE, Suite 300 <br /> d AMR Ham lake, MN 55304 <br /> Phone:(783)434-2030 Fax:(7 63)434-2094 <br /> www.AnokaSWCD.org <br /> MEMORANDUM <br /> T : RCWD Board of Managers <br /> FROM: Mitch Haustem, Stormwater and Shoreland Specialist <br /> TF: November 17, 2017 <br /> SUBJECT: Water Quailty grant Program Application Centerville Lake Shoreline <br /> Stabilization, Trail Side Park, Centerville <br /> The following summarizes the RCSSD <br /> Water Quality grant Program application to <br /> cast-share the installation of a shoreline <br /> stabilization using riprep and native <br /> xx <br /> vegetation at the Trail Side Park property <br /> on Centerville Lake in Centerville. <br /> PROJECT DESCRIP71ON .. L. x . .. <br /> The Trail Sade Park property Is located on <br /> the east side of Centerville Lake, along the <br /> gest side of Main St. in Centerville(see <br /> map to right). Approximately 350' of <br /> r <br /> shoreline is actively eroding. Natural wave <br /> action and crakes from boat traffic are the <br /> primary causes of erosion. Sediment and .. . .. .. <br /> nutrients from the eroding shoreline directly <br /> enter Centerville Lake,whichis park of the city <br /> Rice geek Chain of Lakes.Additionally, a °. <br /> sanitary sewer main within the park is at v 7 <br /> risk of exposure if erosion continues. � <br /> For this project,the 350' shoreline is <br /> r x t <br /> �x <br /> divided into north and South zones based <br /> on the shoreline topography. <br /> North Zone(Approximately 165') - 'i his zone is characterized by relatively steep shoreline <br /> slopes(about 2:1). Currently, these upland slopes are slumping into Centerville Lake as <br /> result of wave action undercutting the toe of the sloped generally, these slumping soil areas are <br /> four to six feet high. The north zoneshoreline slopes consist of sandy soils being held in place <br /> by weedy forbs and grasses with relatively shallow root systems. The continued erasion of <br /> these slopes threatens a paved regional bike path (about 12' east of the L.)and Main St <br /> (about 30' east of the C) L). <br /> South r i t l ' -The south zone is characterized by an approximately 20' <br /> wide level area below a steep slope leading up to a bike path and Main St. Shoreline erosion <br /> has undercut this level area, resulting in two to three foot high vertical shoreline banks. This <br />