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TO:Planning Commission <br />FROM;Jeanne A* Mabusth <br />DATE;June 11, 1981 <br />SUBJECT;#629 Allan C. Larson, <br />Conditional Use Permit <br />Zoning District - LR-lC <br />Application - conditional use permit to construct retaining <br />wall and replace wooden stair structure to lake <br />shore dock <br />The applicant proposes construction of a 40* lono S^s'high <br />retaining wall to prevent further erosion of their lakeshore <br />bank. It would appear that the original house construction <br />so close to the bank created the severe instability. Rip <br />rap is not feasible. The retaining wall is the only method <br />available to control the extensive erosion that is contin­ <br />uously weakening the stairs structure to the lake and even­ <br />tually may cause structural damage to the house. <br />The proposed stairs structure is far too ambitious and must <br />be trimmed down. I suggest that the 6* maximum width stan­ <br />dard for docks be allowed (spaced board construction). The <br />5' X 12' landing must be trimmed down to 5* x 6'. The new <br />central location of the stairs is no problem. Any additional <br />structure or decking on the surface of the shoreline must be <br />replaced with eitner crushed rock or other permeable material. <br />The replacement of the stairs, the landing 5’ x 6' in con­ <br />sideration of the safety factor and the retaining wall are <br />the only structure that can be considered within the pro­ <br />tective lakeshore setback area. <br />The retaining wall design will be reviewed by the City Engineer. <br />I may have imput from our engineer at our meeting.