75 FR 79300
SIP Approval: Mississippi (incorporation of nitrogen oxide (NOx) as a precursor to ozone).
SIP Approval: Mississippi (incorporation of nitrogen oxide (NOx) as a precursor to ozone).
SIP Approval: Massachusetts (delegation of authority for PSD program)
SIP Approval: Minnesota (sulfur dioxide (SO2) emissions).
SIP Approval: Indiana (updates to definitions)