Is it possible that what you're looking for lies in http://library.municode.com/html/11580/level3/PII_C12_AI.html#PII_C12_AI_s12-9
Specifically, there it says you can shovel your snow or ice into the street provided "said snow or ice is broken up and spread evenly, to a thickness of no more than three inches, during daylight hours, when the mean temperature for that day is above 40 degrees Fahrenheit."
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Specifically, there it says you can shovel your snow or ice into the street provided "said snow or ice is broken up and spread evenly, to a thickness of no more than three inches, during daylight hours, when the mean temperature for that day is above 40 degrees Fahrenheit."