R18-2-801. Classification of Mobile Sources

A. This Article is applicable to mobile sources which either move while emitting air contaminants or are frequently moved during the course of their utilization but are not classified as motor vehicles, agricultural vehicles, or agricultural equipment used in normal farm operations. This subsection shall not apply to non-road engines or vehicles, as defined by 42 U.S.C. § 7550(10) and (11). B. Unless otherwise specified, no mobile source shall emit smoke or dust the opacity of which exceeds 40%.