The cache is not located at the posted coordinates.
First, solve The Park Ciphers #1, #2, #3, and #4 to obtain clues to the coordinates for this cache.
Then utilize those clues to solve this simple cipher.
#5: Additive Ahktuhl Decimation
North = Clue from #1 + Clue from #3
West = Clue from #2 + Clue from #4
Congratulations to Chris K in Geauga, who was FTF on 10/20/2014.