CFR › Title 40 › Part 63 › §63.109440 CFR §63.1094Verified against eCFR.gov as of June 20, 2026View official text on eCFR.gov ↗Copy linkThe types of waste described in paragraphs (a) and (b) of this section are exempt from this subpart.(a)Waste in the form of gases or vapors that is emitted from process fluids.(b)Waste that is contained in a segregated storm water sewer system.