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Lake Opportunities <br />Impaired Water Quality <br />- The most public of issues; Fecal Coliform & Phosphorus are the main offenders <br />- Working to identify largest contributors <br />- Proposing revised test result parameters for Beach area closings later in this presentation <br />• Adopt a revised threshold for Beach postings based on MN Dept of Health and CDC <br />recommendations <br />Invasive Aquatic Vegetation Issue (Curly Leaf Pondweed) <br />- Application to DNR for a Permit to draw down the Lake was ultimately denied <br />- Continuing manual removal activities <br />Dredging Strategy <br />- 12 years have passed since the Dredging <br />- An analysis was completed by Wenck to ascertain the current sedimentation status and determine best path <br />forward <br />- Summary Findings: The Lake is filling in with sediment roughly as predicted in 1998 <br />- The Lake Orono Water Quality Committee will evaluate the Wenck recommended action plan in the spring of <br />2011 <br />Lake Studies <br />- TMDL (Total Maximum Daily Loads) - a calculation of the maximum amount of a pollutant that a waterbody <br />can receive and still safely meet water quality standards <br />- Major Watershed Restoration and Protection Project Initiative <br />Lake Testing <br />- Water Depth <br />- Chemical Testing <br />- SECCHI disk water clarity (MPCA Citizen Lake Monitoring Program [CLMP]) <br />.r.rWCVxk ~_-. <br />2 <br />Copyright ©2011 -Lake Orono Improvement Association, Inc. All Rights Reserved <br />