R2022-225 Resolution Authorizing Lake Decatur Watershed Protection Program Agreement, for Pond Improvements, with Ronald R. Helm and Jeanne E. Helm

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Public Works DATE: 12/5/2022 MEMO: 2022-69 TO: Honorable Mayor Julie Moore Wolfe and City Council Members FROM: Scot Wrighton, City Manager Matt Newell, P.E., Public Works Director Keith Alexander, Water Production Manager Jennifer Gunter, Watershed and Lake Manager SUBJECT: Resolution Authorizing Lake Decatur Watershed Protection Program Agreement, for Pond Improvements, with Ronald R. Helm and Jeanne E. Helm. SUMMARY RECOMMENDATION: It is recommended that the City Council authorize a Lake Decatur Watershed Protection Program Agreement between the City and Ronald R. Helm and Jeanne E. Helm for the construction of a pond to control nutrients, sediment and erosion for a not to exceed cost to the City of$23,625.00. This amount represents 75% of the total project cost of$31,500.00. The remainder will be paid by the property owner. COUNCIL PRIORITY GOALS: This project addresses City Council's Priority Goal #6, Key Implementation Strategy#3: Implement recommendations of a Lake Management Plan so that the quantity of sediment, silt and nitrates entering Lake Decatur is significantly reduced, and adopt other strategies designed to assure good water quality and proper watershed stewardship for the future. BACKGROUND: The City's 2021 Watershed Management Plan is designed to significantly reduce Lake Decatur sedimentation and improve the lake's water quality through watershed conservation. City staff manages the watershed conservation efforts in-house with the assistance of Northwater Consulting, the City's Watershed Management Plan consultant. The pond to be constructed on private farmland is expected to result in these annual nutrient and sediment reductions: Nitrogen 195.69 pounds Phosphorus 34.7 pounds Sediment 31.2 tons Page 122 of 221