[Code of Federal Regulations] [Title 40, Volume 30] [Revised as of July 1, 2004] From the U.S. Government Printing Office via GPO Access [CITE: 40CFR1039.520] [Page 503] TITLE 40--PROTECTION OF ENVIRONMENT CHAPTER I--ENVIRONMENTAL PROTECTION AGENCY (CONTINUED) PART 1039_CONTROL OF EMISSIONS FROM NEW AND IN-USE NONROAD COMPRESSION-IGNITION ENGINES--Table of Contents Subpart F_Test Procedures Sec. 1039.520 What testing must I perform to establish deterioration factors? Sections 1039.240 and 1039.245 describe the method for testing that must be performed to establish deterioration factors for an engine family.