"According to the DPW, the yearly bill tops $4 million. This comes from two manners of leaving crap around. The first is the aforementioned sprinkling of worn detritus on the public right of way for the supposed benefit of apocryphal students. The second is the large-scale dumping of toxic materials in the city's more industrial zones -- such as the repeated discharging of toxic roofing materials in Bayview throughout September and October." - SFWeekly
