[Code of Federal Regulations] [Title 40, Volume 28] [Revised as of July 1, 2006] From the U.S. Government Printing Office via GPO Access [CITE: 40CFR401.16] [Page 9] TITLE 40--PROTECTION OF ENVIRONMENT CHAPTER I--ENVIRONMENTAL PROTECTION AGENCY (CONTINUED) PART 401_GENERAL PROVISIONS--Table of Contents Sec. 401.16 Conventional pollutants. The following comprise the list of conventional pollutants designated pursuant to section 304(a)(4) of the Act: 1. Biochemical oxygen demand (BOD) 2. Total suspended solids (nonfilterable) (TSS) 3. pH 4. Fecal coliform 5. Oil and grease [44 FR 44503, July 30, 1979; 44 FR 52685, Sept. 10, 1979]