Stickie's Trickies #7 Mystery Cache

Cache is NOT at the listed Coordinates!!!  Note the Difficulty Rating of 4, this cache listing is intentionally vague.  NO TOOLS or BRUTE FORCE REQUIRED!

This series is dedicated to the innovative hide, aka camo, or, urban camo. There might be a problem to solve or a puzzle to work out too. This series is dedicated to Ace Flapperhacker whose caches I found back in 2005 set the standard for camo that I hope to live up to.

The Cache Container is located within 2 miles of the coordinates listed above at the following coordinates:

N ?? ?0.D36   W ??? ?3.PD0

Find the Zip Code of this Airport somewhere in the contiguous United States.

Find the Digital Root (D), and the Additive Persistence (P) of said Zip Code.

The final clue is within D/P feet.

The only Hint is to give credit for the inspiration of this cache to unkraut007 whose cache inspired me to create this cache.  Of course, credit also goes to ACE.

You can check your answers for this puzzle on GeoChecker.com.