Professional Services for Borregas Ave Storm Drain Rehabilitation

The City of Sunnyvale is seeking proposals from licensed Engineering firms to provide professional services for design, preparation of bid documents, and construction support for the Replacement/Repair/Rehabilitation of Storm Drain Project Borregas Ave. The scope of work generally includes preparation of design development, bid documents, and bidding/construction support for Public Works competitive bidding. Ancillary work includes environmental needs assessment and document preparation, construction cost estimating, schedule monitoring, preparation of reports, providing recommendations, and project management.\. Location The project sites are largely located on Borregas Avenue between the 237 and 101 Freeways and on Alturas Avenue between Borregas Avenue and W. Ahwanee Avenue. These streets have no signalized intersections B. PROJECT DESCRIPTION This storm drain (SD) project generally includes the following work: Rehabilitate of approx. 2,200 LF of existing 16 SD Replace approx. 350 LF of existing 15 SD with 18 SD. Install approx. 500 LF of new 24 SD. Perform SD connections and disconnections with existing junction structures. Install new SD manholes, one of which will include a flow throttling function. The existing 16 SD pipe to be rehabilitated is very old, deformed, and fractured Vitrified Clay Pipe (VCP). Some areas are at risk of collapse if the rehab method disturbs the pipe wall. Slip lining and spiral wound lining are not practical for this reason, and because they do not maximize the post-project pipe ID. Pipe bursting to the same ID or larger appears impractical due to pipe size, shallow pipe depth, and risks to crossing utilities and the street surface. Cured-in-Place Pipe (CIPP) lining is anticipated to be the preferred alternative. CCTV of the entire length of the existing 16 pipe will be provided to the selected consultant