City Engineer Report — L.1

PROJECT UPDATE  A Review of MSA Projects in Your Community City of Tiffin, IA CLIENT LIAISON: Andrew Inhelder, PE Office: 319.364.4773 Cell: 515.802.0906 [email protected] DATE: May 28, 2026 ON-GOING PROJECTS REVERSE OSMOSIS WATER TREATMENT PLANT DESIGN – CLINT WIENEN The precast walls and ceiling for the RO Building have been installed. Rough-Ins for the underground plumbing and electrical are nearly complete below the RO Building floor slab. The roof trusses for the RO Building have been installed, and the Contractor is continuing with sheathing. They plan to pour the RO Building floor slab in the upcoming weeks. The base slab and wall pours have been completed for the Clearwell. They are planning to have the Clearwell concrete completed by the end of the month. They are also planning to pour the remaining footings and foundation walls for the existing water treatment plant expansion in the next few weeks. SYSTEMWIDE SANITARY SEWER MODEL – ERIC THOMPSON MSA has integrated the Lift Station draw down results into the sanitary model and will be re-running the model with the known development conditions. MSA is also reviewing potential future sites for regional Lift Stations based on topography and potential service areas. VILLAGE DRIVE & ROBERTS FERRY ROAD SIGNAL DESIGN – CHAD WAGNER Project was awarded to Neumiller Electric, Inc on May 19th, 2026. Contractor is working on completing the construction contract and has begun preparing shop drawings for review. A pre-construction meeting will be scheduled for after the construction contract is approved. PROJECT UPDATE Page 1 of 5