The San Tomas Aquino Creek Trail spans from the San Francisco Bay Trail to Cabrillo Avenue in Santa Clara. It is a popular trail for walking and cycling, especially with the people who work in the many offices nearby.
At the time of placement, there is a gap in the fence just to the west of the trail, and the nearest building is unoccupied, so it may be possible to park a very short walk from GZ.
Depending on how the container has been rehidden, you may need a TOTT to extract it.
As always, be alert and aware of your surroundings, especially when searching and signing.