[Code of Federal Regulations] [Title 40, Volume 5] [Revised as of July 1, 2003] From the U.S. Government Printing Office via GPO Access [CITE: 40CFR56.4] [Page 129] TITLE 40--PROTECTION OF ENVIRONMENT CHAPTER I--ENVIRONMENTAL PROTECTION AGENCY (CONTINUED) PART 56--REGIONAL CONSISTENCY--Table of Contents Sec. 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. --------------------------------------------------------------------------- \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.