02677oam 2200637 450 991071164240332120190425131348.0(CKB)5470000002485638(OCoLC)1078783751(EXLCZ)99547000000248563820181212j201804 ua 0engurmn|||||||||txtrdacontentcrdamediacrrdacarrierTechnical basis for the EPA's development of the significant impact thresholds for PM2.5 and ozone /Air Quality Assessment DivisionResearch Triangle Park, NC :U.S. Environmental Protection Agency, Office of Air Quality Planning and Standards, Air Quality Assessment Division,April 2018.1 online resource (2 volumes) color illustrations, maps"April 2018.""EPA-454/R-18-001."Suffix in report number based on information from agency.Includes bibliographical references.[V.1. Without special title] -- [V.2 Appendices].Technical basis for the Environmental Protection Agency's development of the significant impact thresholds for Particulate Matter 2.5 and ozoneAir qualityStandardsUnited StatesAirPollutionStandardsUnited StatesAirPollutionUnited StatesMeasurementAtmospheric ozoneUnited StatesMeasurementAtmospheric ozoneEnvironmental aspectsUnited StatesAirPollutionMeasurementfastAirPollutionStandardsfastAir qualityStandardsfastAtmospheric ozoneEnvironmental aspectsfastAtmospheric ozoneMeasurementfastUnited StatesfastAir qualityStandardsAirPollutionStandardsAirPollutionMeasurement.Atmospheric ozoneMeasurement.Atmospheric ozoneEnvironmental aspectsAirPollutionMeasurement.AirPollutionStandards.Air qualityStandards.Atmospheric ozoneEnvironmental aspects.Atmospheric ozoneMeasurement.United States.Environmental Protection Agency.Air Quality Assessment Division,GPOGPOMERUCOCLCFGPOBOOK9910711642403321Technical basis for the EPA's development of the significant impact thresholds for PM2.5 and ozone3299235UNINA