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Zoning File #1820 <br />May 11, 1993 <br />Page 2 <br />Please review Exhibit H, the engineer ’s report. Upon our site inspection, staff obser\ed <br />Lhc three locations where run-off flows directly through three curb cuts within the surrounding <br />bituminous curb that defines the paved parking area. We observed vegetation and debris that <br />collected in the parking area that was now washed to the shoreline. As Gustafson ’s report notes, <br />it is the invisible pollutants that raise the most concern, specifically oils, pollutants and nutrients <br />that are flushed into the lake with the initial downpour. <br />The issue of water quality from the stormwater that collects on the parking area was <br />never addressed in 1986. In light of recent State directives and the City’s long-standing goal <br />reflected in ordinances that call for improvement and maintenance of water quality, staff <br />recommends that we begin a dialog between both City and County to determine the best <br />treatment facility and a reasonable deadline for installation. <br />Staff has discussed the City’s concerns with Dennis Bailey and a copy of the engineer ’s <br />report was faxed to his office. Bailey seemed to be supportive of our recommendation but <br />wanted first to review the various treatment facilities listed in engineer ’s report. Staff asked if <br />an installation deadline of next spring seemed feasible and he felt it would be. <br />Suggested Recommendation <br />To recommend approval of a conditional use permit for the Hennepin County Department <br />of Environmental Management for repairs to a section of a seawall at the North Arm access as <br />shown on plans for Hennepin County Proj.ct No. 9209, Sheet 2 of 2 by Wayne Shoo, a <br />registered professional engineer, dated May 6, 1992 with a request that County install a facility <br />for surface water control as it relates to sediment and debris that washes into Lake Minnetonka <br />from the paved parking area and that the City work with the County in formulating the best <br />alternative for the development of that facility. It is further recommended that the control be <br />developed sometime prior to the boating season of 1994. <br />4 <br />> ■