Try I-5 to 205 West, take the Tracy Blvd exit, turn right off freeway, following it to Clifton Court Rd. Take a left on Clifton Court Road, go about a mile or two down and right on Cal Pack Road. Follow Cal Pack up to the levy, go right on the levy all the way to the end. There is a gate across the levy road which should be open. This is just in front of the rock barrier.

IMO the only hard part is spotting Cal Pack Road and that is not to bad as it is the first road entering Clifton Court Road with a stop sign on it (no stop sign on Clifton Court Road, just Cal Pack at the intersection).

Buzzfish