Home › CFR › Title 40 › Part 52 › §52.147440 CFR §52.1474 — Part D conditional approval.Verified against eCFR.gov as of June 20, 2026View official text on eCFR.gov ↗Copy link(a)The following portions of the Nevada SIP contain deficiencies with respect to Part D of the Clean Air Act which must be corrected within the time limit indicated.(1)-(4) [Reserved]