85 FR 23498
SIP Proposal: Kentucky (revision to Jefferson County performance test regulations).
SIP Proposal: Kentucky (revision to Jefferson County performance test regulations).
SIP Proposal: Kentucky (revision to Jefferson County performance test regulations).
SIP Proposal: Kentucky (revision to Jefferson County performance test regulations).
SIP Proposal: Kentucky (revision to Jefferson County performance test regulations).
SIP Proposal: Kentucky (revision to Jefferson County performance test regulations).
SIP Proposal: Kentucky (revision to Jefferson County performance test regulations).
SIP Approval: North Carolina (nitrogen oxides emissions from large internal combustion engine sources).
SIP Approval: North Carolina (nitrogen oxides emissions from large internal combustion engine sources).
SIP Approval: North Carolina (nitrogen oxides emissions from large internal combustion engine sources).
SIP Approval: North Carolina (nitrogen oxides emissions from large internal combustion engine sources).