[Code of Federal Regulations] [Title 40, Volume 17] [Revised as of July 1, 2004] From the U.S. Government Printing Office via GPO Access [CITE: 40CFR86.305-79] [Page 588] TITLE 40--PROTECTION OF ENVIRONMENT CHAPTER I--ENVIRONMENTAL PROTECTION AGENCY (CONTINUED) PART 86_CONTROL OF EMISSIONS FROM NEW AND IN-USE HIGHWAY VEHICLES AND ENGINES--Table of Contents Subpart D_Emission Regulations for New Gasoline-Fueled and Diesel-Fueled Heavy-Duty Engines; Gaseous Exhaust Test Procedures Sec. 86.305-79 Introduction; structure of subpart. (a) This subpart describes the equipment required and the procedures to follow in order to perform exhaust emission tests on gasoline-fueled and Diesel heavy-duty engines. Subpart A sets forth the testing requirements and test intervals necessary to comply with EPA certification procedures. (b) Four topics are addressed in this subpart. Sections 86.306 through 86.318 set forth specifications and equipment requirements; Sec. Sec. 86.319 through 86.333 discuss calibration methods and frequency; test procedures and data requirements are listed (in approximately chronological order) in Sec. Sec. 86.334 through 86.343; and calculation formulas are found in Sec. Sec. 86.344 and 86.345. Alternative procedures and calculations are set forth in Sec. Sec. 86.346 and 86.347.