Approval and Promulgation of Air Quality Implementation Plans; Illinois; Revision to the Chicago 8-Hour Ozone Maintenance Plan
air-emissions · Rule · Published 2014-05-22 · Effective 2014-07-21 · IL · 79 FR 29324
Document
Document number
2014-11487
Federal Register citation
79 FR 29324
CFR reference
40 CFR 52
Type
Rule
Action
Direct final rule.
Category
air-emissions
Publication date
2014-05-22
Effective date
2014-07-21
State
IL
EPA docket
EPA-R05-OAR-2014-0274
Abstract
The Environmental Protection Agency (EPA) is approving Illinois' March 28, 2014, state implementation plan (SIP) revision to the 1997 8-hour ozone maintenance plan for the Illinois portion of the Chicago-Gary-Lake County, Illinois-Indiana area (the Greater Chicago Area). This SIP revision establishes new Motor Vehicle Emissions Budgets (MVEB) for volatile organic compounds (VOC) and oxides of nitrogen (NO<INF>X</INF>) for the year 2025. EPA is approving the allocation of a portion of the safety margin for VOC and NO<INF>X</INF> in the ozone maintenance plan to the 2025 MVEBs. Total year 2025 emissions of VOC and NO<INF>X</INF> for the area will remain below the attainment level required by the transportation conformity regulations.