Home › CFR › Title 40 › Part 11740 CFR Part 117 — Determination of Reportable Quantities for Hazardous SubstancesSubpart A — General Provisions§ 117.1— Definitions.§ 117.2— Abbreviations.§ 117.3— Determination of reportable quantities.Subpart B — Applicability§ 117.11— General applicability.§ 117.12— Applicability to discharges from facilities with NPDES permits.§ 117.13— Applicability to discharges from publicly owned treatment works and their users.§ 117.14— Demonstration projects.Subpart C — Notice of Discharge of a Reportable Quantity§ 117.21— Notice.§ 117.23— Liabilities for removal.