Here you will find yourself by a mural at the Carleton Street shops. You will find the information you need close by to work out where the cache is located, its a simple single offset multi.
On the Mural is the name and date of the artist. Let the date be ABCD.
Look at the top of the large wooden spool by the mural.
E = Total number of bolts on the inner square metal plate.
F = Total number of bolts with the round washers.
The cache can be located at: S35 23.BCF E149 03.BEF
Check sum S22 E29