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Department Approval � Item Description BACKGROUND l�'�, Jy REQUEST FOR COUNCIL ACTION Date: 6/15/09 Item No. : 12. e City Manager Approval Award Bid for Twin Lakes Infrastructure Improvements The Twin Lakes Infrastructure Improvements Project consists of the construction of Twin Lakes Parkway, between Cleveland Avenue and Mount Ridge Road, and the construction of Mount Ridge Road, between Twin Lakes Parkway and County Road G2. The project was advertised for bid in May. The bids were opened at 10 a.m. on Monday, June 1, 2009. The contract as bid included a base bid as well as a number of alternates. These were added to ensure that the awarded bid would meet our budget for this project. What follows is a brief description of the bid alternates. Building removal- in order to construct the improvements two buildings need to be removed. Roseville Properties is seeking bids to remove the remaining buildings on their site. We included this work as an alternate in case Roseville Properties was able to get a lower bid for the work. We are recommending that this work be included in the proj ect. Roseville Properties has not found a lower bid for this work and has concurred that the demolition of these buildings be included in the City's contract. This adds $130,000.00 to the base bid. 2. Decorative Pavers vs. Decorative Concrete- a portion of the proj ect is adding streetscape detail to the roadway, roundabout areas, and sidewalks. This detail can be provided through colored and stamped concrete or pavers. The base bid included colored concrete. The alternate is to construct this detail with concrete pavers. Staff has concerns about the long term maintenance costs of pavers and longevity. We are recommending that we stay with the base bid for this alternate. This alternate would have added $1506 to the cost of the proj ect. Additional landscaping on Mt. Ridge Road- this alternate is to add additional landscaping through rain gardens along Mt. Ridge Road. In keeping with the green infrastructure goals for this project, staff wanted to know if the addition of these gardens would be within the project budget. These rain gardens are not required to meet the City's or Rice Creek Watershed's rules. We do not recommend that we include this work for this contract. Additional landscaping in this area could be included in a future phase of Twin Lakes area improvements. This alternate would add $37,071 to the cost of the proj ect. 4. LED vs. Inductive lighting- The base bid included LED street lights. In the interest of ensuring that the lighting costs would remain within the proj ect budget, we requested an alternate bid for inductive technology lighting. Both technologies have lower energy Page 1 of 3