draft 5/8/01

POSSIBLE 8-HR O3 NAAQS IMPLEMENTATION ISSUE TOPICS

–Reconciling Subparts 1 and 2

–Sequential or parallel SIP development & implementation (1-hr vs. 8-hr)

–Geographic coverage (existing 1-hr NA areas vs. larger 8-hr NA areas that encompass the preexisting 1-hr NA or maintenance areas)

–Classifications– whether and how to classify

–Role of mandatory measures (under Subpart 2)

–Timing –

–Designations

–Attainment Dates (under subpart 1 or subpart 2?)

–SIP submission

–Attainment demonstrations & relation to transport

–Reasonable further progress

–Conformity requirements

–New source review requirements

--in transport cases

–different offset ratios for different parts of 1-hr/8-hr O3 nonattainment areas?

–Early reductions

–Relation to PM2.5 & RH activity

–Designation policy??