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Massachusetts State Implementation Plans (SIPs)

Massachusetts SIPs describe how Massachusetts ensures that it meets the National Ambient Air Quality Standards and Regional Haze goals under the Clean Air

SIP Contact

Mark Wert 
617-292-5598
mark.wert@mass.gov 

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Ozone SIP

RACT SIP for the 2008 and 2015 Ozone Standards – October 2018 (English, ZIP 3.94 MB)
Infrastructure SIP for 2015 Ozone Standard – September 2018 (English, ZIP 262.38 KB)
Transport SIP for the 2008 Ozone Standard - February 2018 (English, PDF 274.68 KB)

Nonattainment New Source Review SIP for the 2008 Ozone Standard - February 2018 (English, PDF 148.99 KB)
Emission Statement SIP for the 2008 Ozone Standard – February 2018 (English, PDF 104.66 KB)
Infrastructure SIP for the 2008 Ozone Standard - June 2014 (English, ZIP 3.65 MB)
Final Massachusetts SIP Revision: 8-Hour Ozone Attainment Demonstration - January 2008 
Final Massachusetts 1-Hour Ozone Standard Attainment Submittal - July 1998 (English, ZIP 5.55 MB)
Transport SIP for the 1997 Ozone Standard - January 2008 (English, DOC 138.5 KB)
CAIR NOx Ozone Season Allowance Allocations - 2011-2015 (English, ZIP 322.95 KB)

Carbon Monoxide (CO) SIP

Second 10-Year Limited Maintenance Plan for Carbon Monoxide for the Boston Metropolitan Area, Lowell, Springfield, Waltham, and Worcester - February 2018 (English, PDF 953.7 KB)
Revision to Carbon Monoxide (CO) SIP Maintenance Plan for Lowell - April 2010 (English, ZIP 137.71 KB)
Revision to State Implementation Plan (SIP) for Carbon Monoxide (CO) - May 2001 (English, PDF 390.47 KB)

Lead SIP

Infrastructure SIP for the 2008 Lead Standard - December 2012 (English, ZIP 405.78 KB)

Nitrogen Dioxide (NO2) SIP

Infrastructure SIP for the 2010 NO2 Standard - June 2014 (English, ZIP 3.66 MB)

Fine Particulate Matter (PM2.5) SIP

Infrastructure SIP for the 2012 PM2.5 Standards - February 2018 (English, PDF 1.18 MB)
Transport SIP for the 1997 PM2.5 Standard - January 2008 (English, ZIP 128.4 KB)

Sulfur Dioxide (SO2) SIP

Transport SIP for the 2010 SO2 Standard - February 2018 (English, PDF 619.59 KB)
Infrastructure SIP for the 2010 SO2 Standard - June 2014 (English, ZIP 3.72 MB)

Regional Haze SIP

Massachusetts Regional Haze SIP Revision for 2018-2028 (7-22-21) (English, PDF 6.38 MB)
Appendices to the Massachusetts Regional Haze SIP Revision for 2018-2028 (7-22-21) (English, ZIP 92.53 MB)
Massachusetts Regional Haze Progress Report - February 2018 (English, PDF 2.97 MB)
Final Regional Haze State Implementation Plan (SIP) (Supplemental) - August 2012 (English, PDF 4.27 MB)
Appendices to the Massachusetts Regional Haze SIP - August 2012 
Final Regional Haze State Implementation Plan (SIP) - December 2011 (English, PDF 3.07 MB)

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