StacksVerified U.S. regulatory reference

40 CFR §266.220

Verified against eCFR.gov as of June 20, 2026View official text on eCFR.gov ↗
The storage and treatment conditional exemption exempts your low-level mixed waste from the regulatory definition of hazardous waste in 40 CFR 261.3 if your waste meets the eligibility criteria in § 266.225 and you meet the conditions in § 266.230.