01772oam 2200421 a 450 991070248400332120130207114805.0(CKB)5470000002427325(OCoLC)823646174(EXLCZ)99547000000242732520130108d2009 uy 0engurcn||||a||||txtrdacontentcrdamediacrrdacarrierInterim transportation conformity guidance for 2006 PM₂.₅ NAAQS nonattainment areas[electronic resource] /Transportation and Regional Programs Division, Office of Transportation and Air Quality, U.S. Environmental Protection Agency[Washington, D.C.] :U.S. Environmental Protection Agency, Office of Transportation and Air Quality, Transportation and Regional Programs Division,[2009]1 online resource (25 pages)Title from title screen (viewed on Jan. 08, 2013)."November 2009.""EPA-420-B-09-036."Includes bibliographical references.AutomobilesMotorsExhaust gasUnited StatesTransportationEnvironmental aspectsUnited StatesAirPollutionStandardsUnited StatesAutomobilesMotorsExhaust gasTransportationEnvironmental aspectsAirPollutionStandardsUnited States.Environmental Protection Agency.Transportation and Regional Programs Division.ELCELCOCLCOGPOBOOK9910702484003321Interim transportation conformity guidance for 2006 PM₂.₅ NAAQS nonattainment areas3131783UNINA