Title
Resolution to Petition the Washtenaw County Water Resources Commissioner for the Design and Construction of Stormwater Management Control Measures on South 4th Avenue, in the Allen Creek Drainage District (Total Project Cost: $870,000.00; Stormwater Portion: $320,000.00)
Memorandum
Attached for your approval is a resolution to petition the Washtenaw County Water Resources Commissioner (WCWRC) to undertake a project to design and construct stormwater management control measures on South 4th Avenue, between East Huron Street and East Liberty Street. The proposed project will reconstruct the existing corridor using a traditional road surface, with management of stormwater through infiltration basins located below the road surface.
These improvements will reduce the amount of stormwater entering the City's stormwater piping network and reduce contaminant loading to the downstream creeks and the Huron River. The City is subject to a Total Maximum Daily Load (TMDL) restriction by the State of Michigan for biota (total suspended solids), E. coli and phosphorus. The proposed improvements will improve water quality and reduce localized flooding in the project areas.
Nearly 36% of the land draining to the Huron River and its tributaries is impervious, and as a result, stormwater frequently enters the river too quickly, causing localized and regional flooding during certain rain events. These rain events also carry pollutants from impervious areas to the creek, lowering water quality.
Since the project focus is on water quality improvement, it is eligible for low-interest (2.0%) State Revolving Fund (SRF) loan funding, and this project has been included on the Project Priority List (PPL) for SRF loan funding. This project, along with four others submitted by the WCWRC within the City, has been classified as a "green project," which may result in up to 50% loan forgiveness.
A formal petition from the City is required to move this project to construction. ...
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