The federal Clean Air Act requires states to submit plans to ensure the attainment and maintenance of national ambient air quality standards (NAAQS). The common term used to refer to these federally enforceable plans is "State Implementation Plans" or SIPs. The six criteria pollutants as defined by the U.S. Environmental Protection Agency (EPA) are carbon monoxide, lead, nitrogen dioxide, ozone, particulate matter, and sulfur dioxide. SIPs are also prepared to protect visibility at federal Class I areas consisting of national parks and wilderness areas. Vermont is considered a "Class I state" for Regional Haze planning due to the presence of the Lye Brook Wilderness Area in the southern Green Mountains.
The table below includes recently submitted or proposed SIP revisions. Please use the contact information at the bottom of the page if you are seeking SIP related information that is not posted here.
| SIP Revisions | Federal Citation | Relevant Documents | Status |
|---|---|---|---|
| Regional Haze SIP: 2018-2028 | 40 CFR 51.308(b),(d) & (e) |
Submitted to EPA July 3, 2024 Public comment period April 18 - June 1, 2024 Public hearing on May 22, 2024 |
|
| Inspection and Maintenance SIP | Clean Air Act, Sec. 182(c)(3)(A), 184 (a), 184(b)(1)(A) and 40 C.F.R. Part 51, Subpart S |
Submitted to EPA June 28, 2022. Open for public comment April 29-June 8, 2022. Public hearing June 1, 2022 |
|
| Infrastructure and Good Neighbor SIP, 2015 Ozone NAAQS | Clean Air Act, Sec. 110 (a)(1) & (2) |
Approved by EPA June 4, 2020, 85 FR 34357 Submitted to EPA November 20, 2019. |
|
| Reasonably Available Control Technology (RACT) SIP revision for the 2008 and 2015 ozone NAAQS | Clean Air Act Sec. 184 |
Approved by EPA 11/26/2019, 84 FR 65009 Submitted to EPA September 6, 2018 Proposed May 23, 2018. Comment period closed July 16, 2018 Public Notice, No. 18P019 |
|
| Infrastructure SIP for the 2012 Fine Particle (PM2.5) NAAQS, including Good Neighbor SIP for the interstate transport provision | Clean Air Act, Sec. 110 (a)(1) & (2) | Final submittal, I-SIP and Good Neighbor SIP |
Approved by EPA June 29, 2018, 83 FR 30598 Submitted to EPA October 31, 2017 |
| Infrastructure SIP for the 2008 Ozone, 2010 Nitrogren Dioxide, and 2010 Sulfur Dioxide NAAQS | Clean Air Act, Sec. 110 (a)(1) & (2) | Infrastructure SIP for 2008 Ozone, 2010 NO2, and 2010 SO2 |
Approved by EPA March 19, 2018, 83 FR 11884 EPA Approval and Conditional Approval, June 27, 2017, 82 FR 29005 Approval of Interstate Transport Elements for Ozone, October 13, 2016, 81 FR 70631 Submitted to EPA Nov. 2. 2015 |
| Infrastructure SIP for the 2008 Lead NAAQS | Clean Air Act, Sec. 110 (a)(1) & (2) | Infrastructure SIP for the 2008 Lead NAAQS |
Approved by EPA March 19, 2018, 83 FR 11884 EPA Approval and Conditional Approval, June 27, 2017, 82 FR 29005 Submitted to EPA July 29, 2014 |
| Regional Haze Five-Year Progress Report | 40 CFR 51.308(g) & (h) |
Regional Haze 5-year Progress Report Appendix F: Status of Emissions from 167 Key Stacks (Excel file) |
Approved by EPA December 18, 2017 Federal Register Citation: 82 FR 59969 Submitted to EPA February 29, 2016 |
| Regional Haze State Implementation Plan | 40 CFR 51.308(b),(d) & (e) |
|
Approved by EPA May 22, 2012 Federal Register Citation: 77 FR 30212 Submitted to EPA August 31, 2009 |
For more information about Vermont's State Implementation Plans, please contact Bennet Leon.