The cache location can be found here:
N47 23.ABC
W122 19.DEF
A= last digit of the date on the sundial
B= number of bronze triangle plaques around the base of American flagpole
C= number of brick chimneys seen on main building
D= 2
E= third digit of Anno Lucis date seen on main building
F= numerical value of letter seen on the blue flag (letter also seen within symbol on sundial)
Be sure and check your coordinates here once you solve the puzzle: http://www.geochecker.com/index.php?code=c2f9140bc90de5475489767cece2e9d6&action=check&wp=47433446504d46&name=4c616e646d61726b