2010-02-23_PWETC_AgendaPacket - Laserfiche WebLink

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Roseville Public Works, Environment and Transportation Commission Agenda Item Date: January 26, 2.010 Item No: 5 Item Description: Twin Lakes Phase II Infrastructure Project Background: Phase 2 of the Public Infrastructure Improvement consists of the following work: • Extension of Twin Lakes Parkway from the Mount Ridge roundabout east to Prior Avenue • Construction of a roundabout at Twin Lakes Parkway and Prior Avenue • Reconstruction of Prior Avenue from Twin Lakes Parkway to County Road C • Construction of a signal at the intersection of Prior and County Road C • Associated utility extensions including sanitary sewer, water main and storm sewer In 3une 2008, the City Council approved an engineering contract with WSB for the design of the public infi•astructure within the Twin Lakes redevelopment area. WSB have provided staff with a complete set of design plans for this phase of construction. To complete the Phase 2 infrastructure improvements, staff anticipates that the City only needs to acquire a very limited amount of permanent right of way and temporary construction easements from 1885-1915 County Road C, which is owned by a real estate investment trust based out of Aurora, Colorado. The majority of the needed right of way was acquired last summer. On September 21, 2009, the City Council approved a contract with Braun Intertec to enroll the Phase 2 infrastructure area into the State's Voluntary Investigation and Cleanup Program and develop a Response Action Plan (RAP) for the Phase 2 project. In its proposal, Braun. recommended using a similar approach to cleanup that was approved by the Minnesota Pollution Control Agency (PCA) for the initial phase of infrastructure i.mprove~nents. Braun submitted the RAP to the PCA and the PCA has indicated through email correspondence that the agency needs additional information regarding the extent of the contamination within the right of way prior to it approving the plan. The MPCA has provided the City with a letter and to indicating what information the City needs to provide in order to receive approval of the plan. Based on this, Braun, completed additional subsurface sampling in order to fully characterize the level and extent of contamination within the right of way. Staff estimates that the Phase 2 project will cost approximately $2.9 million. The following table breaks out the costs based. on the 60-percent design plans.