[Code of Federal Regulations] [Title 40, Volume 5] [Revised as of July 1, 2008] From the U.S. Government Printing Office via GPO Access [CITE: 40CFR58.3] [Page 221] TITLE 40--PROTECTION OF ENVIRONMENT CHAPTER I--ENVIRONMENTAL PROTECTION AGENCY (CONTINUED) PART 58_AMBIENT AIR QUALITY SURVEILLANCE--Table of Contents Subpart A_General Provisions Sec. 58.3 Applicability. This part applies to: (a) State air pollution control agencies. (b) Any local air pollution control agency to which the State has delegated authority to operate a portion of the State's SLAMS network. (c) Owners or operators of proposed sources.