The Geocache is not at the posted coordinates. Go to them to get information to get the final coordinates.
Once you are at the coordinates follow these instructions:
There will be a grate with oval holes in it. Count how many oval holes are in it and the number you get will be AB.
The coordinates to find the final cache are N 37° 21.(A/2)9(B+3)' W 122° 07.(A/2)B1'
It is just a short walk away to the cache. There is a logbook but no pen or pencil inside. Please open carefully and don’t break it. Thanks!
You can validate your puzzle solution with certitude.