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California environmental regulators were expected late last week to make public their final slate of proposed amendments designed to help motor carriers ease the financial pain of complying with the state’s tough heavy-duty truck greenhouse gas emissions reduction and retrofitting regulations.

Lawyers for American Trucking Associations have filed a petition asking that all 13 federal appeals court judges with the District of Columbia Circuit reconsider a three-judge panel’s decision that let California’s “reefer retrofit” rule stand.