Notice of Geotechnical Work at Diridon 3/22– 4/8

Notice Cause
Notice Effect(s)
Partial Parking Lot Closure
Start Date
End Date

Contractors will be conducting geotechnical explorations around the future Diridon Station 


The work will take place in the Diridon Station Parking Lot bounded by W. Santa Clara St, Cahill St, Crandall St, and Montgomery St.   

Location of Geotechnical Work at Diridon 3/22– 4/8


  • Work will be conducted as early as Fri Mar 22th – Mon Apr 8th. 
  • General working hours will be 7:00 AM-5:00 PM.

* Please note that timelines for construction activity have some inherent uncertainty and may change depending on field conditions and/or inclement weather.

What to Expect

  • The work will consist of sonic drilling that employs high-frequency vibrations to penetrate subsurface formations efficiently and precisely, utilizing specialized equipment including a sonic drill head and support rig. 
  • This work activity does not typically generate dust.

Necessary to help prepare for VTA’s BART Silicon Valley Phase II Project.   

Service Impacts