Ultraviolet "Bonus Adventure Lab" Mystery Cache

The posted coordinates are bogus.  

This cache IS NOT at the posted coordinates and can only be found by downloading the Adventure Lab app (from Google Play Store or Apple App Store) and gathering clues from the Adventure Lab Cache "Ultraviolet". Use the clues found from that lab. Your answers are only 1 letter. Put those letters together to make 1 word. That word placed in the checker will give you the final. An ultraviolet flashlight is recommended for the lab cache not the final. Good luck and I hope you had fun!

You can validate your puzzle solution with certitude.