Lime Lagoon Improvements - City of Ames

Lime residuals from the water softening process are stored and dewatered in large storage lagoons. The material is removed annually in the fall and recycled by applying it to farm fields as an agricultural liming agent. The cost of the annual removal and application is budgeted in the operating budget. A project is underway in FY 2021/22 to rebuild the trench drain in the bottom of one of the oldest cells. These drains aid in the dewatering process. Over time, they have plugged with fine lime particles and have been damaged due to the excavation of lime from the cells using a back hoe. The same modifications are planned for the two oldest cells for FY 2024/25 ($222,000). The purchase of a replacement decant pump ($55,000) is also planned for FY 2024/25. A project that will partially subdivide the large north cell is planned for design in FY 2024/25 with construction the following year. FY 2024/25 Underdrain replacements ($222,000); replacement decant pump ($55,000); design of new cell ($131,000) FY 2025/26 Construction of new cell ($1,131,000) As of July 13, 2022, this project is currently in the FY 2022-2027 CIP . Funding for this project is allotted in the city's capital improvement plan for construction Fy 2024. A firm timeline has not been established; however, construction is scheduled for Fiscal Year 2024. As of June 30 2023, no new information available

Division 02 -	Existing Conditions, Subsurface Investigation.
Division 03 -	Concrete, Concrete Reinforcing, Cast-in-Place Concrete.
Division 05 -	Metals, Structural Metal Framing, Metal Decking.
Division 23 -	Heating, Ventilating, and Air Conditioning (HVAC), Facility Fuel Piping, Facility Fuel-Storage Tanks.
Division 31 -	Earthwork, Clearing and Grubbing, Grading.
Division 32 -	Exterior Improvements, Fences and Gates.
Division 33 -	Utilities, Storm Drainage Utilities.