[Code of Federal Regulations] [Title 40, Volume 21] [Revised as of July 1, 2007] From the U.S. Government Printing Office via GPO Access [CITE: 40CFR125.56] [Page 313-314] TITLE 40--PROTECTION OF ENVIRONMENT CHAPTER I--ENVIRONMENTAL PROTECTION AGENCY (CONTINUED) PART 125_CRITERIA AND STANDARDS FOR THE NATIONAL POLLUTANT DISCHARGE ELIMINATION SYSTEM--Table of Contents Subpart G_Criteria for Modifying the Secondary Treatment Requirements Under Section 301(h) of the Clean Water Act Sec. 125.56 Scope and purpose. Authority: Clean Water Act, as amended by the Clean Water Act of 1977, 33 U.S.C. 1251 et seq., unless otherwise noted. Source: 59 FR 40658, Aug. 9, 1994, unless otherwise noted. This subpart establishes the criteria to be applied by EPA in acting on section 301(h) requests for modifications [[Page 314]] to the secondary treatment requirements. It also establishes special permit conditions which must be included in any permit incorporating a section 301(h) modification of the secondary treatment requirements (``section 301(h) modified permit'').