An official website of the United States government.

This is not the current EPA website. To navigate to the current EPA website, please go to This website is historical material reflecting the EPA website as it existed on January 19, 2021. This website is no longer updated and links to external websites and some internal pages may not work. More information »

Ground-level Ozone Pollution

Infrastructure State Implementation Plan (SIP) Requirements and Guidance

The Clean Air Act requires states to submit state implementation plans (SIPs) that implement, maintain, and enforce a new or revised national ambient air quality standard (NAAQS) within 3 years of EPA issuing the standard. The Infrastructure SIP is required for all states.

On this page:

Infrastructure Requirements List

These section numbers refer to sections of the Clean Air Act:

Section 110(a)(2)(A) Emission limits and other control measures
Section 110(a)(2)(B) Ambient air quality monitoring/data system
Section 110(a)(2)(C) Program for enforcement of control measures
Section 110(a)(2)(D)(i) - I Prong 1: Interstate transport - significant contribution
Section 110(a)(2)(D)(i) - I Prong 2: Interstate transport - interfere with maintenance
Section 110(a)(2)(D)(i) - II Prong 3: Interstate transport - prevention of significant deterioration
Section 110(a)(2)(D)(i) - II Prong 4: Interstate transport - protect visibility
Section 110(a)(2)(D)(ii) - Interstate and international pollution abatement
Section 110(a)(2)(E) Adequate authority and resources
Section 110(a)(2)(F) Stationary source monitoring system
Section 110(a)(2)(G) Emergency power
Section 110(a)(2)(H) Future SIP revisions
Section 110(a)(2)(J) Consultation with government officials; Public notification; PSD and visibility protection
Section 110(a)(2)(K) Air quality modeling/data
Section 110(a)(2)(L) Permitting fees
Section 110(a)(2)(M) Consultation/participation by affected local entities

Top of Page

Infrastructure SIP Contacts

Region 1 Alison Simcox 617-918-1684

includes Maine, New Hampshire, Vermont, Massachusetts, Connecticut, Rhode Island, and FREDS entry

Region 2 Kenneth Fradkin 212-637-3702

includes New Jersey, New York, the Commonwealth of Puerto Rico, Virgin Islands

Region 3 Ruth Knapp 215-814-2191
Gregory Becoat (FREDS) 215-814-2036

includes Delaware, Maryland, Pennsylvania, Virgina, West Virginia, District of Columbia

Region 4 Nacosta Ward 404-562-9140
Sean Lakeman (FREDS) 404-562-9043

includes Alabama, Florida, Georgia, Kentucky, Mississippi, North Carolina, South Carolina, Tennessee

Region 5 Sarah Arra 312-886-9401
Christos Panos (FREDS) 312-353-8328

includes Illinois, Indiana, Michigan, Minnesota, Ohio, Wisconsin

Region 6 Sherry Fuerst 214-665-6454
Carl Young (FREDS) 214-665-6645

includes Arkansas, Louisiana, New Mexico, Oklahoma, Texas

Region 7 Amy Algoe-Eakin 913-551-7942
Jan Simpson (FREDS) 913-551-7089

includes Iowa, Kansas, Missouri, Nebraska

Region 8 Abby Fulton 303-312-6563

includes Colorado, Montana, North Dakota, South Dakota, Utah, Wyoming, and FREDS entry

Region 9 Andrew Steckel 415-947-4115
Kevin Gong 415-972-3073
Vernese Gholson 415-947-4200

includes Arizona, California, Hawaii, Nevada, Pacific territories of American Samoa, Guam, and Commonwealth of Northern Mariana Islands

Region 10 Kristin Hall 206-553-6357

includes Alaska, Idaho, Oregon, Washington, and FREDS entry

Top of Page

Guidance on Development and Submission of Infrastructure SIPs

You may need a PDF reader to view some of the files on this page. See EPA’s About PDF page to learn more.