# ^L\ OFFICE OF THE GOVERNOR 

### COMMONWEALTH OF MASSACHUSETTS STATE F'IOUSE • BOSTON,

### MA 02133 

# RECEIVED (617) 725-4000 CEC 10 2013 DEVAL L. PATRICK GOVERNOR OFFll,'E OF THE RFGIONAL ADh1{NISTRATDR 

# December 2, 2013 H. Curtis Spalding Regional Adrrinistrator U.S. Environmental Protection Agency, Region 1 5 Post Office Square, Suite 100 Boston, MA 02109-3912 Dear Mr. Spalding: I am writing to request that the U.S. Environmental Protection Agency (EPA) designate Massachusetts as in "attainment" of the 2012 annual fine particulate matter National Ambient Air Quality Standard (NAAQS) as defined by Section 107(d)(1)(A)(ii) of the Clean Air Act. This request is based on 2010-2012 air monitoring data for Massachusetts (see attachment). If you need additional information, please contact Commissioner Ken Kimmell at the Massachusetts Department of Environmental Protection (617-292-5856). An electronic copy of this material is also being provided to your staff. I look forward to continuing to work with you to improve environmental quality in Massachusetts. Si cerely,

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