Several changes were made throughout Rule R307-355 as a result of public comments. These changes include adding a compliance schedule for affected sources, adding definitions, retaining language that was proposed to be removed, and adding clarifying language throughout the rule. (EDITOR'S NOTE: The original proposed amendment upon which this change in proposed rule (CPR) was based was published in the July 1, 2017, issue of the Utah State Bulletin, on page 150. Underlining in the rule below indicates text that has been added since the publication of the proposed rule mentioned above; strike-out indicates text that has been deleted. You must view the CPR and the proposed amendment together to understand all of the changes that will be enforceable should the agency make this rule effective.)