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~ I I I I - , , , . - * - , '{j) . 1.0 Introduction The Kadrie site is situated on tile la..~eshore of Lake Josephine in Rosevillc, Ramsev J Coumy, Minnesota. The lando\vncr has 2.pp:-ox.:mately lOO' of lakeshore along the soutb side of the lake. The lakcshore ha.s been experiencing and cOIlti.nues to experieuce significant loss of land due to water and ice action. Two large stately trees are currently being threatened (see letter in Appendix A) and there is an immediate need to protec':: this lakeshore. The Non-Point Engineering Assistance Program staff was requested to do a design that would solve this lakeshore erosion problem. The following section describes the design and design criteria. 2.0 Desig:;. Conside:-QD.on 2.1 btroduc~ion The solution for iliis hkesl:.ore prc:ection was based on :he successful applicmim: of thi~ technique on lakes in. the r:orcher:l :::.~t.:'opolit~ area of ~1inne<l?olis/S:. Paul. The solution is detailed in the preparcc. Fl~s ar:d specific::ltions providd for this project. . In summary, the design uses a boulder berm comprising of two courses of large boulders of minimum diameter 24 inches. Each boulder is approximately 900 lbs in weight. Stones of size approximmely 8 inch;:'s to 12 inches will be hand placed between the boulders and between the bouiders and the gravel backf1ll. Topsoil will be added over this grave! and stone area, and the ar:2. will be seeded with a grass mix. Soil bioengineering will be done on the bank. to add further protection to this lakeshore, aml this will be in the form of trees and shrubs. The following sections describe some of the design criteria. 2.2 Aesthetics The selected design is the preferred alternative to this lake shore site for aesthetical reasons. It represents the lowest impact to the landscape when compared to a typical riprap design which would require a significant length of riprap going up most of the bank. This design leaves the land in a vegetative state that would retain a narorallandscape look. ':\he trees and shrubs will provide shade in the lake and promote fish habitat. This design adheres to the Department of Narur3l ResoU!'ces (Dl'I"'R) requirement for a minimal irn.pact . solution, see DNR rules Section 6115.0202 Subp 5 A. This design also adheres to (he