56.4—Mechanisms for fairness and uniformity—Responsibilities of Headquarters employees.

(a) The Administrator shall include, as necessary, with any rule or regulation proposed or promulgated under parts 51 and 58 of this chapter 1 mechanisms to assure that the rule or regulation is implemented and enforced fairly and uniformly by the Regional Offices.

Code of Federal Regulations

Footnote(s): 1 Part 51 is entitled, “Requirements for Preparation, Adoption, and Submittal of Implementation Plans.” Part 58 is entitled, “Ambient Air Quality Surveillance.”

(b) The determination that a mechanism required under paragraph (a) of this section is unnecessary for a rule or regulation shall be explained in writing by the responsible EPA official and included in the supporting documentation or the relevant docket.

CFR

56.4—Mechanisms for fairness and uniformity—Responsibilities of Headquarters employees.

Code of Federal Regulations