U.S. Environmental Protection Agency Washington DC
EPA has released the final Integrated Science Assessment (ISA) for Particulate Matter (PM). This is EPA’s latest evaluation of the scientific literature on the potential human health and welfare effects associated with ambient exposures to particulate matter (PM). The development of this document is part of the Agency's periodic review of the national ambient air quality standards (NAAQS) for PM. The recently completed PM ISA and supplementary annexes, in conjunction with additional technical and policy assessments developed by EPA’s Office of Air and Radiation, will provide the scientific basis to inform EPA decisions related to the review of the current PM NAAQS.
PM is one of six principal (or criteria) pollutants for which EPA has established NAAQS. Periodically, EPA reviews the scientific basis for these standards by preparing an ISA (formerly called an Air Quality Criteria Document). The ISA and supplementary annexes, in conjunction with additional technical and policy assessments, provide the scientific basis for EPA decisions on the adequacy of the current NAAQS and the appropriateness of possible alternative standards. The Clean Air Scientific Advisory Committee (CASAC), an independent science advisory committee whose existence and whose review and advisory functions are mandated by Section 109 (d) (2) of the Clean Air Act, is charged (among other things) with independent scientific review of EPA's air quality criteria.
The first and second drafts of the PM ISA were released on December 22, 2008 and July 31, 2009, respectively, for independent external peer review and public comment. These drafts were reviewed at public meetings of the CASAC PM Review Panel on April 1-2, 2009 and October 5-6, 2009, respectively. This final PM ISA has benefited from the expert comments received at the CASAC meetings and from public comments, and it has been revised accordingly.resolution res resolution meaning 2k resolution dpi meaning high resolution 1024x768 4k meaning new year resolution meaning 5k resolution 6k resolution conflict resolution meaning resolution meaning in english res meaning meaning of resolve low resolution low res hdpi 1080p meaning res in english pixel per inch 2k res resolve meaning in english resolution is new year's resolution meaning yarn resolutions 2k monitor resolution resolve noun 1440p 2k to resolve 1920x1200 resolution high resolution meaning 2k display 2k screen resolution 2k pixels meaning of adr 2k screen a res directors resolution hvga low resolution meaning 2k 1440p hdtv resolution a resolution the virginia resolution was written by gag resolution qhd 2k 2k resolution 2560x1440 2560 x 1080 resolution 2k display resolution 2k dci lo res 1900 x 1080 resolution examples amicable resolution amicable resolution meaning new resolution meaning resolution of force unanimous resolution 1440p is 2k 2k pixel resolution resolution resolution antonym resolution and certification of sba resolution and certification resolution agency resolution and independence resolution aaliyah resolution astronomy definition resolution advanced imaging resolution biology definition resolution bioscience resolution bandwidth resolution brewing company resolution bill resolution book resolution biology resolution bong cleaner resolution center paypal resolution center resolution calculator resolution copper resolution center airbnb resolution center ebay resolution chart resolution counseling center resolution definition resolution definition literature resolution definition microscope resolution def resolution definition biology resolution definition in a story resolution drops resolution definition government resolution example resolution economics resolution enhancer resolution english resolution examples in literature resolution ela resolution equation resolution english definition resolution for funeral resolution film