State Implementation Plans (SIPs)

For Rules Related SIP Submissions, Click Here

Ozone

• Limited Maintenance Plan for the Great Smoky Mountains National Park, Rocky Mount, & Triangle Maintenance Areas for the 1997 8 Hour Ozone NAAQS
• Charlotte / Gastonia / Salisbury, NC 2008 8-Hour Ozone Area
• Charlotte / Gastonia / Salisbury, NC and Rock Hill, SC (Metrolina) 1997 8-Hour Ozone Area
• Raleigh / Durham / Chapel Hill (Triangle) Area
• Greensboro / Winston-Salem / High Point (Triad) Area
• Great Smoky Mountains National Park
• Rocky Mount Area
• Nitrogen Oxides SIP Call Transition Requirements for Large Non-Electrical Generating Units

Sulfur Dioxide (SO₂)

• SO₂ SIP for Evergreen Packaging/Blue Ridge Paper Products

Particulate Matter

• Hickory (Catawba County) and Greensboro/Winston-Salem/High Point (Davidson and Guilford Counties) Areas

Carbon Monoxide

• Carbon Monoxide (CO) Limited Maintenance Plan

110(a) Infrastructure Certifications

Inspection and Maintenance Program SIP

Regional Haze State SIP

Transportation of Conformity Memorandum of Agreements (MOAs)

• Nitrogen Oxides SIP Call