Title
Resolution to Award a Construction Contract to Birkenstock Enterprises, L.L.C. (160,579.50; Bid No. ITB-4025) for the Harvard Drain & Nichols Arboretum Improvements Project
Memorandum
Attached for your review and approval is a resolution to award a contract to Birkenstock Enterprises, L.L.C. in the amount of $160,579.50 for the Harvard Drain & Nichols Arboretum Improvements Project.
The construction contract titled “Harvard Drain & Nichols Arboretum Improvements Project” includes the replacement of approximately 250 feet of 15 and 12 inch storm sewer with new reinforced concrete sewer ranging from 12 inches to 27 inches in diameter. The work also includes the construction of an infiltration meadow area with stone step-pool structures and drainage channel restoration.
The existing storm pipe in Harvard Place, Highland Road and Ridgeway Street currently is undersized, and consequently surcharges, causing flooding in Harvard Place. The pipe outlets into the Nichols Arboretum, and the water has been causing erosion due to high velocities on both city residents’ and University property. To alleviate this condition, the City and the University of Michigan have been jointly planning improvements on their separate properties.
The improvements in the city right-of-way include drop structures, pipe upsizing, and pipe slope modifications to slow the water’s velocity before it outlets. In the Arboretum, improvements include scour holes and step pools to slow the water further, and a long flow channel and overflow plain which will promote infiltration of the water into the sandy soils.
This project is a joint project with the UofM. The two parties are paying for the two parts of the project respectively and have an agreement drafted for the City to enter into a contract with the contractor and to manage the project.
Funding for this project is included in the approved Storm Water capital budget and the University of Michigan’s portion will be advanced pen...
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