Title
Resolution to Petition the Washtenaw County Water Resources Commissioner for the Willard Street Stormwater Management Control Measures in the Allen Creek Drainage District (Total Cost: $630,000.00; City’s Apportionment: $601,020.00)
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 Willard Street, between East University Avenue and South Forest Avenue. The proposed project will construct a porous road surface that will be reconstructed in the existing corridor with management of offsite storm flow coming from a pollutant separation unit. This area is an excellent opportunity for stormwater treatment in a highly visible urban setting.
The existing, 700-ft long portion of street would be replaced with a new porous surface allowing stormwater infiltration and nutrient removal from the first flush. 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 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 creeks and ultimately the Huron River, reducing water quality. The City falls within the Total Maximum Daily Load (TMDL) area of the Huron River for phosphorus and E. coli from storm water.
Since the project’s focus is on water quality improvement, it is eligible for low-interest State Revolving Fund (SRF) loan funding. This project has been included by the State of Michigan on the Project Priority List (PPL) for SRF loan funding...
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