[Code of Federal Regulations] [Title 40, Volume 26] [Revised as of July 1, 2006] From the U.S. Government Printing Office via GPO Access [CITE: 40CFR281.23] [Page 575-576] TITLE 40--PROTECTION OF ENVIRONMENT CHAPTER I--ENVIRONMENTAL PROTECTION AGENCY (CONTINUED) PART 281_APPROVAL OF STATE UNDERGROUND STORAGE TANK PROGRAMS--Table of Contents Subpart B_Components of a Program Application Sec. 281.23 Schedule for interim approval. For a state program that must modify its statutory or regulatory requirements for release detection, release reporting and investigation, and out-of-service or closed UST systems in order to be no less stringent than the federal requirements, the plan must include a schedule for making such changes and for submitting an amendment to the [[Page 576]] state application in accordance with Sec. 281.51.