The cache is NOT at the posted coordinates.
This is a bonus cache for completing my Adventure Lab Cache "Northern State Mental Hospital". To obtain the final coordinates you need to complete the Lab Cache. Pay attention to the journal entries at the lab cache locations. You will be given the coordinates for this cache with the journal entries.
The hours for this cache are dawn to dusk.
Good luck. Keep calm, and cache on.
Congratulations to CorvetteKent and Cache Finder 6000 as CO-FTF.