Amending Chapter 11-300 of The Philadelphia Code, entitled "Board of Surveyors," by amending Section 11-301, entitled "Street Improvements," by adding new subsections authorizing the Board of Surveyors of the Department of Streets, by resolution, to file a supplemental plan to the City Plan showing any changes in curb lines and grades that in the judgment of the Board of Surveyors will enhance pedestrian safety and improve traffic calming, provided that these changes do not affect the curb line for an entire block, under certain terms and conditions. — Open Common Ground