City Engineer's 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: October 1, 2026 ON-GOING PROJECTS REVERSE OSMOSIS WATER TREATMENT PLANT DESIGN – CLINT WIENEN The RO skids have been delivered and assembled. Driveway paving has been partially completed. Metal roofing has been installed on the RO building. Trusses and metal roofing have been installed for the addition onto the existing building. Roofers are expected to be completed within the next month. Both north and south mezzanine have been framed. The new high service pump has been placed into the pumphouse. Work to be completed in the next month includes metal siding and roofing, truss installation on the addition to the existing treatment building, finish mezzanine and stair construction, pave trail and entrance, and ongoing electrical, plumbing, HVAC, and process piping items. At the construction meeting held on 9/29/2026, Tricon Construction is not anticipating the RO System to be operational until mid to late November. Substantial Completion was identified as 9/30/2026 in the Agreement. WELL 6 – CLINT WIENEN The City signed the PSA presented at the September 15th council meeting. HIGHWAY 6 CONCEPT AND COST ESTIMATE – JAMES WATTERS Final plans for letting were submitted to the DOT on August 4, 2026. The project is currently out for bidding and MSA is answering Contractor questions. The DOT will open bids on October 20, 2026. The DOT is currently working on the construction agreement with the City and will be submitting to the City for signature when ready. This agreement will put in place construct cost splits between the City and DOT. PROJECT UPDATE Page 1 of 5