The $953 million BART Silicon Valley Berryessa Extension (SVBX) Design-Build Project includes the 9.9-mile segment from Warm Springs in Fremont to Berryessa in San Jose. The alignment is a combination of at-grade, open cut, and aerial guideway configurations and includes a retained-cut passenger station in Milpitas and an above-ground passenger terminus station in San Jose. The project also includes the realignment and restoration of Upper Penitencia Creek (UPC) as biological habitat mitigation. The UPC Improvement project widened and realigned a 1,000 ft. section of the stream, creating a 1-acre floodplain and constructing a meandering, braided channel with a backwater wetland refugia pool for steelhead. In addition, the creek corridor was planted with locally collected native wetland and riparian species to improve the existing degraded condition of the creek.
Keish Env. staff performed environmental commitment and permit compliance oversight from 2012 to present, including integration of environmental commitments into the design plans and specifications. Staff performed field oversight and tracking of all NEPA and CEQA mitigation measures, sustainability compliance, design requirements and best management practices, as well as review of post-construction stormwater treatment measures. Keish Env. coordinated between the VTA, design-build contractor team, and regulatory agencies to address unexpected field issues.