Section R307-203-2 - Sulfur and Ash Content of Coal for Residential Use(1) After July 1, 1987, no person shall sell, distribute, use or make available for use any coal or coal containing fuel for direct space heating in residential solid fuel burning devices and fireplaces which exceeds the following limitations as measured by the American Society for Testing Materials Methods: (a) 1.0 pound sulfur per million BTU's, and(b) 12% volatile ash content.(2) Any person selling coal or coal containing fuel used for direct residential space heating within the State of Utah shall provide written documentation to the coal consumer of the sulfur and volatile ash content of the coal being purchased.Utah Admin. Code R307-203-2