40 CFR 85.1401 - General applicability.
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The requirements of this subpart shall be applicable to 1993 and earlier model year urban buses operating in consolidated metropolitan statistical areas and metropolitan statistical areas with a 1980 population of 750,000 or more that have their engines rebuilt or replaced after January 1, 1995.
Title 40 published on 2013-07-01
no entries appear in the Federal Register after this date.