If you've lived in Calgary for any length of time, this should be an easy puzzle. If you work downtown, doubly so. Once you decode the following you'll know where to find the cache.
So S/B
So E/S
FC-L H TNA
MD MD R
S B/M
F B/M B/MB
You are looking for a camouflaged Lock'n'Lock container. It contains a logbook, pencils, cache note, an FTF prize (an unactivated Canada geocoin), an STF prize (an unactivated Canada micro geocoin), some finder's cards and a few trade items. Good luck!
* Scuba gear would be required to get there, and it would not help you in the least.