[Code of Federal Regulations] [Title 40, Volume 15] [Revised as of July 1, 2003] From the U.S. Government Printing Office via GPO Access [CITE: 40CFR85.1410] [Page 541] TITLE 40--PROTECTION OF ENVIRONMENT CHAPTER I--ENVIRONMENTAL PROTECTION AGENCY (CONTINUED) PART 85--CONTROL OF AIR POLLUTION FROM MOBILE SOURCES--Table of Contents Subpart O--Urban Bus Rebuild Requirements Sec. 85.1410 Changes after certification. The equipment certifier shall recertify any retrofit/rebuild equipment which was certified pursuant to Sec. 85.1406 and to which modifications are made affect emissions or the capability of the equipment to meet any other requirement of this subpart.