BARRIE, ONT. A mountain of debris has formed at a park in the Barrie, Ont. neighbourhood ripped up by an EF-2 tornado with 210 kilometer an hour winds on Thursday. Clean-up crews are using Sandringham Park as a waste transfer station, dropping off boards, broken windows, insulation, appliances, and other materials gathered from the destruction zone. Debris is then loaded onto trucks headed for the landfill. MORE TORNADOES CONFIRMED The Northern Tornadoes Project has revised the track of the twister that hit the Mapleview Drive and Prince William Way area. Researchers now say the damage zone is 12 kilometres long and 600 meters wide.