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City of <br />Elk — <br />River <br />Request for Action <br />To <br />Item Number <br />Mayor and City Council <br />9.1 <br />Agenda Section <br />Meeting Date <br />Prepared by <br />Work SessionJune <br />20, 2016 <br />Brandon Wisner, Stormwater Coordinator <br />Item Description <br />Reviewed by <br />Lake Orono Management <br />Kristin Mroz, Environmental Technician <br />Reviewed by <br />Cal Portner, City Administrator <br />Action Requested <br />Discuss Lake Orono Management strategies. <br />Background/Discussion <br />Last July, the Lake Orono Improvement Association (LOIA) sent a letter to the city outlining concerns <br />about the lake as well as welcoming the opportunity to work with the city regarding long-term planning. <br />Since then, city staff, Sherburne County Soil and Water Conservation (SWCD) staff, Council Member <br />Jerry Olson and a few Lake Orono residents have met on several occasions in an effort to identify <br />concerns, roles and potential next steps. <br />Agenda <br />1. Lake Concerns <br />i. Sedimentation <br />1. Sedimentation Study <br />2. Removal options <br />a. Dredging <br />3. Feasibility Study <br />4. Costs, Timeline <br />ii. Aquatic Vegetation and Algae <br />1. Curly -Leaf Pondweed <br />2. Native Vegetation Overgrowth <br />3. Algae <br />a. Management <br />i. Drawdown/freeze <br />ii. Hand Removal <br />iii. Chemical Removal <br />1. Public Waters Demonstration Site <br />iv. Lakeshore Buffers <br />v. Upstream Management <br />vi. Costs, Timeline <br />2. TMDL and Sub -watershed Assessment Grant <br />i. City Storm Water Management Plan <br />3. LOWCQ Lake Orono Management Plan <br />i. Action Item Calendar for 2016 <br />P a w E A E U s r <br />NaA f RE] <br />