2017-12-06 P & R Packet - Laserfiche WebLink

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ICE CREEK WATERSHEDIST EEWATER GRANT PROGRAM APPLICATIONT GENERAL INFORMATION F Crtritract f�lsnlhrlr :rl;liv.Ll,t.t.j t'irrlt,tt �Lthcr r5rattt�t�p=arrf �tftterdllle€€€ ��€�svl<t_tl APPLICANT INFORMATION --M Y----- ----- ----- --------------------- -------MMM H� Applicant Phone Ercall City of Centerville 651-503-1834GEhimielister@CENTERVILLEILIN.Corn ...................... Atialling Add€ess Cl St te dip E titINh 55038 CONSERVATION ACTT E PROJECT LOCATION physical Addy .s P��UriCEF�<I€� Trail Side Park -7146 Main St. Centerville County awnship Pa€=FC Section Yi, Pane'IDAnoka 31 i 23 22 8 0 233122220013 Barest ialre,lorcaaB or wittland that the proposed practlrs drainss'to Approximate distance t..,nearatst waterbody, , Centerville Lake Adjacent PROJEcr INFORMATION Project Description(Attach additional sheets if necessary) The frail Side Park property is exceed on the east side of Centerville Lake,-Gong the west side of Male St in Coadievelle(see map to eight).Approximately 35V of shoreilne Is acgmly eroding. Natural wave ardion and wakes firm boat traffic are the primary us of erosion. Sediment and dumpers from the eroding shoreline directy enter Centerville take,which Is part urine Rise Creek Chain of lei . Rehearings,a sanitary sewer main diIihin the park is at risk of exposure If erosion oon6nu . For this project,the 550'shoreline is divided Into north arid wimh zones based on she shoreline topography, North Zone(Approximately 166)-This zone is characterized by relatively stow shardame slopes(about 2:1), Currently,there upland slopes are slumping into Centerville Lake as a result ideravis apron undercutting the too of Mix-tape.. Generally,these slumping salt areas are four to six post Ifgh..The north zone shoreline slopes consist of sandy spits being held In Pace by weedy fame and grasses with reladable shallow root systems,The entranced erosion of these slopes threatens a paved regional bike path(about 12'east of the CHWL)and Main By(about 30'east of the t}ANIL). South Zone Murproismaefly 1 Set-The room zone Is cheractertmd by an approxweaffily CY wide bevel area Wow a steep slope leading up to a bike path and Main St. Shoreline erosion has undercut this level area,resulting in me to three foot high vertical shoreline banks.This anchor has mossbuted to the loss of about 10 mature tress(ZwA0'Ctrl)in the past five years. A sanitary"war line parallels the lakeaho rt along this south zone,generally within 1E-20'of the eroding shorifirric This sewer main,which is about three to four feat in elevation above like t1H4VL,is at risk of failure if the dale pore erosion trend continues. Please note#ad in the post year the City of Owderw le had to implement shoreline stabilization measures to protect the sewer maim alignment located immediately south of the project. PROJECT DESIGN Trail Side Park is located as the windward side of Centerville Lake and experiences more than a mile of Been. On winds days,the shoreline is pounded by waves more than a foot high.The Trail Side Park shoreline also absorbs the wakes horn recreational boaters,kyoudirl wa kiing events hold offshore from the park. Mail a (of long term shoreline stabilization,the Anoka Conservation Coolant proposes Installing deeds(eta minimal quantity necessary)and native plantings. North Zone(Apprordmateiy 165'}-The north zone has a slope teat is similar to ft shoreline to the main of the puract This north zona design consists of laying type IV gersecalle fabric under 12'of ripmp(the minimal depth feasible for shoreline prat on)that Is keyed Into the lake broken. Native wflers,stale (similar species to the prop to the north)will be installed throughout the detail area. Low growing native shrubs wll be installed in a six has wide zone above the rlprap#of Is pre endy nessed, South Zone(Approximately 185')i-The south zone is heavily used far community events during the summon mo (water skiing she",Runways viewing,etc,L Thus,a secondary goal In this zone is to mai in the lake view and access docks seasonally installed In this area.Therefore,the south zone design canaries of laying type IV gootWIe fabric under 12'of notes Can minimal depth feasible for shoreline Icon)that is keyed into the take bottom,About 550 low-growing native plants yfletry and grasses)will be drasheariffid Ina six foot wide zone u islope,Offt dome that is currently mowed. PROJECT BENEFITS Water{;suably Stabil "on of the Trail Silo Parkshoreline will provide reductions in total suspended solids,inlet phosphorus,and other rudoeme entering Centerville rake.As part off the Rice Creek Chain of Lakes system, the vaftr quality Nontypical also have downstream benefits to the Chain of Lakes and Rice Crash, Existing Infireditoaduce pubsideari, Shoreline stibillsoclonsfill protide Protection for the sanitary sewer line within the park,a regional tike path,and Main St. Recreational Use Shoreline satisfaction within Trail side Park will provide continued reweris to Centerville Lake for community events and general rwmaVonRi wider by the public. ESTIMATED POLLUTANT REDUCTIONS Pollutant reductions were estimated using the password MRCS Dead Volume Method in conjunction with 8 R's pollution reduction calculatroker stream and ditch erosion.Erosion severity along Sha shoreline was classified 'save use the bank is predorem inty bare,with exposed tree rants and fallen trees(see site pL-Wres at and of memorandum). Based on this determination,the lateral recession rate was estimated to be ti,3 lowniffich Is on the low and of the'- re'range MA-DA for), Assuming sandy sails,the estimated soil loss#nom this$50'site of bank with erage 2'eroding fare is approximately 11.6 tons per year. This results In an estimated 5.82 pounds or deal phosphorus contributed to Centerville Lake and downstream waterbodkis,annually.firmidlizagen of the bank will result in 104 percent reductions In these estimated pollutant leads, 2016 C-5 application contract.pdf Page 1 of 3 2/05/2016