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  Time Frame
(years)
PM monitors to be in place nationwide 1998 - 2000
PM monitoring data to be collected 1998 - 2002
EPA will designate nonattainment areas for PM 2002 - 2004
States will submit implementation plans for meeting the PM standard 2004 - 2008
States will have up to ten years to meet PM standards, plus two one-year extensions 2012 - 2016

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