This change to the proposed rule clarifies that the exemption for oil and gas wells as defined by 40 CFR 60.5430a does include centralized tank batteries (the 40 CFR definition only includes centralized tank batteries for applicability of fugitive emissions standards). (EDITOR'S NOTE: The original proposed amendment upon which this change in proposed rule (CPR) was based was published in the October 1, 2017, issue of the Utah State Bulletin, on page 58. 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.)