Another thing that Folsom is known for is soccer. This is a very
busy place on a Saturday from August through December and you will
have muggles to deal with. Also, I had a hard time accessing the
cache on weekdays at lunchtime due to people eating lunch in the
park so you might want to try at other times of the day.
Please bring your own pencil since the cache is only big enough for
the log. No hints on this one - you have to use your "Jeo"senses to
find this evil one 
.
The third number for the combination lock on 10-Ball D cache is
located in this cache - you might want to jot the number down and
take it with you - and yes there really is a number in the
cache!
You can find 10-Ball A at
GCYN2Q; 10-Ball B at
GCYP0G; and 10-Ball D at
GCYP0N. Don’t forget to check out the final “Snookered by the
O.C.G. - Magic 8 Ball” at
GCYXVV,.