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Chair: <br /> Aisha Elmquist (2023) <br />Secretary: <br /> Renee Marino (2023) <br />Board Members: <br /> Linda Hansohn (2023) <br /> Tony Peleska (2023) <br /> Kathy Johnson (2024) <br /> Susan Johnson (2025) <br /> Gary Gerding (2025) <br /> <br />Staff Liaison: <br /> David Swearingen <br /> <br /> <br />Karth Lake Improvement <br />District Board <br />REGULAR MEETING <br />Tuesday <br />January 10, 2023 <br /> <br />1245 W. Highway 96 <br />Arden Hills, MN 55112 <br />651.792.7800 <br />www.cityofardenhills.org <br />Agenda <br />Board Meeting Convenes at 6:30 PM <br />The public may access this meeting remotely by joining via Zoom <br />To join the Zoom Meeting, click this link (or copy and paste it into a new browser): <br />https://us02web.zoom.us/j/84571653854 <br /> <br />1. CALL TO ORDER/ROLL CALL <br />2. APPROVAL OF THE AGENDA <br />3. APPROVAL OF MINUTES of the previous meeting October 11, 2022 <br />4. PUBLIC INQUIRIES <br />5. OLD BUSINESS <br />5.1 Karth Lake water level modeling and management process progress report. Renee Marino <br /> <br />5.1.1 Background: Renee Marino’s Hypothesis: a revision to the pump management policy can reduce <br />water level bounce (i.e., range of high and low levels), which can improve lake quality and its environment <br />while appropriately mitigating risk of damage to shoreline properties. <br />Action from 10/11/22 Meeting: Renee to continue working with RCWD to get hydrologist modeling <br />launched. David Swearingen to check on constraints for DNR gauge repositioning. Renee to work with DNR to <br />get the gauge relocated in the spring of 2023 and to include other volunteers in weekly gauge readings. Renee to <br />ask RCWD and DNR for their response to Como lake level management article introduced by Susan Johnson. <br /> <br />5.2 Plan for 2023 removal of excess lake weeds and debris and control of invasive purple loosestrife. Susan <br />Johnson and Board <br /> <br />5.2.1 Background: Holt has scheduled another lake weed removal day in 2023 for lake property owners <br />interested in participating. After the Purple Loosestrife infestation event in 2022, it will be important to monitor <br />and mitigate new growth in the near future, since seeds from the plants removed in 2022 will most likely <br />continue to germinate for several years going forward. <br />Action: Discuss 2023 plan and identify volunteers for 2023 efforts. <br /> <br />5.3 Sediment Growth. David Swearingen <br /> <br />5.3.1 Background: Karth Lake’s sediment levels have risen through the years. Several steps have reduced <br />the rate of new sediment inflow including installation of grit chambers on all street sewer inflows including <br />within the BMP#1 Phase I structure. Board members asked whether sediment growth could be measured going <br />forward. David discussed how the city is measuring sediment growth in several filtration ponds in Arden Hills <br />and suggested that a similar measurement system might be developed for Karth Lake. <br />Action: Continue to discuss the possibility of measuring and monitoring sediment growth going forward. <br /> <br /> <br />