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BACKGROUND The 2000 Bernal Property Specific Plan contemplated the extension of Valley Avenue from its then existing terminus at Bernal Avenue to Junipero/Case Avenue. In order to accomplish that extension, the developer of the Bernal property, BIC, was conditioned to build a railroad overpass to accommodate the existing Union Pacific Railroad tracks that are on the property. Valley Avenue has now been extended under a new railroad bridge in a similar fashion to the Bernal Avenue underpass of the railroad to the north. As part of this work, a portion of the storm drain channel adjacent to the railroad tracks was relocated, including the installation of a concrete box culvert where the channel crosses under Valley Avenue extended. Construction of the Valley Avenue Underpass began in July 2005 and was completed and opened for public use in mid-July 2007. The underpass was constructed with a storm water pumping station to pump accumulated storm water runoff from the depressed roadway as it passes the railroad bridge, During construction of the Valley Avenue underpass a high groundwater condition was encountered. Although the original design of the pumps is adequate to handle this additional unexpected water, the pumping station did not include sufficient back up systems to accommodate continual pumping that has occurred due to the high groundwater in this area. As a result of this condition, the developer was required to include an emergency generator and automatic transfer switch to assure continued operation of the pump station should a local or regional power failure occur. The required emergency generator and transfer switch are items that take a long lead time for ordering. The required equipment is now on order by the developer and will be installed and operational in December, 2007. However, since the roadway has been opened to the public since mid July, staff recommends formal acceptance of the infrastructure at this time. A bond has been secured to assure the installation of the emergency generator. In the meantime, City staff has relied on existing mobile generators in case of emergency. DISCUSSION The railroad bridge at this location will be owned and maintained by the City. This is the only railroad bridge in Pleasanton owned by the City. This ownership and maintenance responsibility was the result of recent Railroad and CPUC policy changes. Railroad tracks and track ballast crossing the bridge will continue to be the responsibility of the Railroad. Improvements included in this acceptance include landscaping along Valley Avenue from Laguna Creek Lane and Case Avenue, the new traffic signals installed at the intersection of Valley Avenue and Case Avenue, the railroad bridge structure, and the storm water pumping station located at the south/east edge of the underpass. Submitted by: Rob Wilson Public Works Director Fiscal Review: ---_. David P. Culver Finance Director Approve by: Ne on Fialho City Manager Page2of2