CFR › Title 40 › Part 1066 › §1066.91040 CFR §1066.910Verified against eCFR.gov as of June 20, 2026View official text on eCFR.gov ↗Copy linkEnclosures for evaporative and refueling emissions must meet the specifications described in 40 CFR 86.106-96, 86.107-96(a), and 86.107-98(a).