89 FR 29277
SIP Proposal: California (revisions concerning nonattainment fees for the 1979 one-hour ozone NAAQS in the Antelope Valley Air Quality Management District and Mojave Desert Air Quality Management District).
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89 FR 29440
EPA promulgated new greenhouse gas emissions standards for model year (MY) 2032 and later heavy-duty highway vehicles that phase in starting as early MY 2027 for certain vehicle categories, updated discrete elements of the Averaging Banking and Trading program, and added warranty requirements for batteries and other components of zero emission vehicles.