Caltrans and the VTA are investigating the subsidence issue that has been detected on Route 87 between Route 280 and Route 85. The VTA has retained URS to conduct a geotechnical investigation. This is a three-month slip in the schedule. The conceptual engineering work conducted to date has identified six projects to be implemented in the corridor. VTA met with stakeholders in July and August to discuss local funding sources that could be available to fund the shortfall.
Discussions are ongoing.
VTA has revised the schedule. Environmental clearance, originally scheduled to be complete in February 2001, is now scheduled for December 2001. PTG is currently taking noise readings before and after work is completed on a Caltrans grinding project in Sonoma County to determine whether grinding may be a successful noise attenuation measure for the corridor. Environmental clearance, originally scheduled for completion in April 2001, is now scheduled for August 2001.