i am rachel gordon with dpw and this is something that mayor lee with the san francisco giants launched, so people keep the city clean. we have actually had a lot of success in the past few months in what we're doing. we're really trying to engage school-aged children from the elementary schools to high school to start thinking about how to keep san francisco clean and beautiful. so we do everything from school curriculum to doing hands-on activities with the kids and go out there and picking up garbage in a safe manner. we had a poster contest with more than 300 submissions from 22 schools and work with the department of environment, with the san francisco municipal transportation agency, with recreation and park department, with the public utilities commission. really all hands-on by city departments, really to just get people to start thinking about taking care of the city, not having it where we have kind of a valet garage pickup by dpw and this is a way that people and corporations can get involved. we have four main giant sweep days in the city all tied to the san francisco giant'