Approval and Promulgation of Air Quality Implementation Plans; Pennsylvania; Disapproval of the Reasonable-Further-Progress Plan for the 1996-1999 Period for the Philadelphia Area

摘要

EPA is proposing to disapprove the State Implementation Plan (SIP) revision submitted by the Commonwealth of Pennsylvania (for the Philadelphia ozone nonattainment area) to meet the rate-of-progress (ROP) requirements under the Clean Air Act (the Act). Under these requirements, states must demonstrate a 3% reduction of volatile organic compounds (VOCs) per year for a three year period between 1996 and 1999. EPA is proposing disapproval because the ROP plan submitted by Pennsylvania for the Philadelphia area projects emissions reductions only for control strategies to the 2005 time frame, rather than for the 1999 and 2002 interim milestone years, per the ROP requirements of the Act. Several of these measures have not been fully adopted or have been stayed or replaced by the Commonwealth. Additionally, the Commonwealth has not calculated emissions target level to be achieved in 1999 (or for 2002) to ensure attainment of reasonable-further-progress toward attainment by the statutory deadline. Finally, the 1990 emissions inventory estimates provided in the Commonwealth's plan for ROP for the period from 1996-1999 vary substantially from the inventory submitted as the Commonwealth's off