Cache is NOT located at posted coordinates!
This is a bonus cache to the Adventure Lab located in Downtown Covington. You must complete the adventure lab in order to retrieve the coordinates. You can record the needed clues from each completed screen, or review the journal when finished and write them down then.
Coordinates for the final cache are:
N30 28.ABC W090 05.CDE
If you are not familiar with Adventure Labs, download the free app and create an account.