The Environmental Protection Agency (EPA) is finalizing an update to a portion of the Outer Continental Shelf (OCS) Air Regulations. Requirements applying to OCS sources located within 25 miles of states' seaward boundaries must be updated periodically to remain consistent with the requirements of the corresponding onshore area (COA), as mandated by the Clean Air Act (CAA). The portion of the OCS air regulations that is being updated here pertains to the requirements for OCS sources for which the State of New York is the COA.

The Environmental Protection Agency (EPA) is proposing approval of revisions to the Missouri State Implementation Plan (SIP) received on November 29, 2016, and March 7, 2019. The revision was submitted by Missouri in response to a finding of substantial inadequacy and SIP call published on June 12, 2015, for a provision in the Missouri SIP related to excess emissions during startup, shutdown, and malfunction (SSM) events. In the submissions, Missouri requests to revise a regulation related to restriction of emissions of visible air contaminants.

The Environmental Protection Agency (EPA or the Agency) is disapproving State Implementation Plan (SIP) submissions from New York and New Jersey addressing interstate transport for the 2008 8-hour ozone national ambient air quality standards (NAAQS). The ``good neighbor'' or ``interstate transport'' provision of the Clean Air Act (CAA) requires that each state's SIP contain adequate provisions to prohibit emissions from within the state from significantly contributing to nonattainment or interfering with maintenance of the NAAQS in other states.

The Environmental Protection Agency (EPA) is taking final action to approve revisions to the State Implementation Plan (SIP) and Operating Permit Program for the State of Iowa. This final action will amend the SIP to update incorporations by reference to EPA methods for measuring air pollutant emissions, performance testing (stack testing) and continuous monitoring. These revisions do not impact the stringency of the SIP or have an adverse effect on air quality. The EPA's approval of this rule revision is being done in accordance with the requirements of the Clean Air Act (CAA).