EPA approved the District of Columbia's request to modify certain of its Agency-authorized programs to allow electronic reporting. 

EPA approved the District of Columbia's request to modify certain of its Agency-authorized programs to allow electronic reporting. 

EPA approved the District of Columbia's request to modify certain of its Agency-authorized programs to allow electronic reporting. 

SIP Approval: Maryland (Baltimore area base-year inventory for the 2015 ozone NAAQS).

SIP Approval: Maryland (Baltimore area base-year inventory for the 2015 ozone NAAQS).

SIP Approval: Maryland (Baltimore area base-year inventory for the 2015 ozone NAAQS).

SIP Approval: Maryland (Baltimore area base-year inventory for the 2015 ozone NAAQS).

SIP Approval: Maryland (Baltimore area base-year inventory for the 2015 ozone NAAQS).

SIP Approval: Maryland (Baltimore area base-year inventory for the 2015 ozone NAAQS).

SIP Approval: Maryland (Baltimore area base-year inventory for the 2015 ozone NAAQS).