PART 116 — DESIGNATION OF HAZARDOUS SUBSTANCES [ 40 CFR 116 ]PART116 — DESIGNATION OF HAZARDOUS SUBSTANCES [ 40 CFR 116 ]Table of Contents§ 116.1 — Applicability.[ Last FR update: 03/13/1978 ]§ 116.2 — Abbreviations.[ Last FR update: 03/13/1978 ]§ 116.3 — Definitions.[ Last FR update: 08/25/1993 ]§ 116.4 — Designation of hazardoussubstances.[ Last FR update:09/08/2011 ]Authority: Secs. 311(b)(2)(A) and 501(a), FederalWater Pollution Control Act (33U.S.C. 1251et seq.).§ 116.1 Applicability.This regulation designates hazardous substances undersection 311(b)(2)(A) of the Federal Water Pollution Control Act (the Act). Theregulation applies to discharges of substances designated in Table 116.4.[43 FR 10474, Mar. 13, 1978]§ 116.2 Abbreviations.ppm=parts per millionmg=milligram(s)kg=kilogram(s)mg/l=milligrams(s) per liter= (approx.) ppmmg/kg=milligram(s) per kilogram= (approx.) ppm[43 FR 10474, Mar. 13, 1978]§ 116.3 Definitions.As used in this part, ...