Tobogganing In Mississauga!

You will find a pretty cool hill at the posted coordinates, but unfortunately the final for this cache is not there.  You need to solve the puzzle below using addresses, to get the coords for the final cache location.

The final cache location is at N 43 32.ABC W 079 40.DEF

Here's the Puzzle:

Mississauga has many great places to toboggan!  Below I have listed what many would call the top 5, and where you might drive to in order to find them:

_ _ _ D Council Ring Rd., Brookmede Park

_ _ B _ Lakeshore Rd. W., Birchwood Park

_ F _  C Dundas St. W., Erindale Park

E _ _ _ Green Glade, Green Glade Sr. Public School

A _ _ _ Castlebridge Dr., Castlegreen Meadows Park

The final cache is located on a toboggan hill at one of these parks.  Figure out the missing numbers in the addresses above, and you'll know where to go!