The City’s annual Spring Clean-up program is preparing for kick-off. This year the program begins April 15, 2013, weather permitting.
Although Spring Clean-up’s official start date is next week, you may see sweepers in your area as City crews are taking advantage of the fair weather for winter sweeping.
http://newsroom.calgary.ca/pr/calgary/spring-clean-up-of-calgary-roads-244659.aspx