M-6 - City Engineer Report

City of Tiffin June 2, 2023 PROJECT UPDATE Highway 6 Pedestrian Underpass Inspection MSA coordinated efforts to complete an inspection of the existing (but closed/buried) pedestrian underpass just north of the Clear Creek Amana Middle School and under Highway 6. This inspection was completed on 4/10/2023 with report provided to city staff on 4/18/2023. MSA bridge engineers are currently preparing an estimate of probable cost for constructing wing wall and grading to open the box culvert permanently. DEVELOPMENT ASSISTANCE Lotus Hill OPD & The State OPD MSA received the Preliminary Plats for both developments on 5/26/2023. Review are on-going. Park Place Part 8 Construction on this residential development is on-going. MSA is providing weekly project update reports to city staff. Little Clippers Day Care MSA submitted comments to the developer on 5/9/2023. Kimberlite Street intersection with U.S. Hwy 6 MMS submitted intersection improvement plans for the Kimberlite Street intersection which includes the realignment of the street to bypass the parking lot for the City Park. Our Team is reviewing the plans per recent conversations with IowaDOT. Upcoming Projects Major Upcoming Description Next Steps/Schedule Infrastructure Project Wastewater Treatment Improvements The current wastewater treatment facility (WWTF) has a Final Compliance with NPDES chloride compliance schedule. There is not any wastewater Permit required October 1, 2025. treatment equipment/processes designed to remove chloride so typically source control is the only economical means of MSA presented its findings on meeting compliance. The existing treatment facility is at about November 1st. MSA has 50% capacity. However, if the past growth rate continues an prepared a proposed schedule expansion will be required in the next 6-8 years. for wastewater treatment, water treatment and water supply improvement projects. Deer View Avenue and Tall Grass DOT has requested concurrence from the City on permanent TBD Avenue & Hwy 6 Intersection improvements to intersection within 5 years of installation of Improvements temporary traffic signals in 2020. Scope includes both pedestrian and vehicle accommodations. PROJECT UPDATE Page 2 of 2