The cache container is not at the listed coordinates. Solve the puzzle to find the cache.
I have enjoyed doing this kind of puzzle elsewhere but we don't seem to have any in the Bay Area. So I made one!
Alert: You are about to download files that contain further details needed to find this geocache. As the cache owner, I represent that these files are safe to download although it has not been checked by Groundspeak or by the reviewer for possible malicious content. Download them at your own risk. (But seriously, it's just a PDF!)
The puzzle is located here.
The final coordinates are ABC meters at an azimuth of DEF degrees true from the listed coordinates.
You can validate your puzzle solution with certitude.