Approval and Promulgation of Air Quality Implementation Plans; Maryland, Post-1996 Rate of Progress Plan for Cecil County and Revisions to the 1990 Base Year Emissions Inventory
EPA is taking direct final action on revisions to the State of Maryland State Implementation Plan (SIP). This revision establishes the three percent per year emission reduction rate-of-progress requirement for the period from 1996 through 1999 for the Maryland portion of the Philadelphia-Wilmington-Trenton ozone nonattainment area, namely Cecil County, Maryland. EPA is also approving revisions to the 1990 base year inventory of ozone precursor emissions submitted by the State of Maryland for Cecil County. EPA is approving these revisions to the Maryland SIP in accordance with the requirements of the Clean Air Act.