### Thomas S. Burack, Commissioner September 18, 2009 Mr. David Conroy Chief, Air Programs Branch EPA - New

England, Region I 1 Congress Street, Suite 1100 Boston, MA 02114-2023 Dear Mr . Conroy: Enclosed for your reviewis New Hampshire's certification of adequacy ("infrastructure" SIP) for the 2006 24-hour fine particulate matter smaller than 2.5 microns in diameter (PM2.5) standard. Under sections 110(a)(1) and (2) of the Clean Air Act (Act), after promulgation of a new or revised National Ambient Air Quality Standard (NAAQS), each state is required to submit a plan to provide for the implementation, maintenance, and enforcement of the NAAQS. States are required to address basic state implementation plan (SIP) requirements, including emissions inventories, monitoring, and modeling to assure attainment and maintenance of the standards. By statute, SIPs for sections 110(a)(1) and (2) are to be submitted by states within 3 years after promulgation of a new or revised standard. EPA advises that Section I 10(a) infrastructure SIPs are due 3 years fromthe date of signature of the NAAQS, as this represents widespread dissemination and therefore promulgation of the NAAQS under 307(d) ofthe Act. For the 2006 24-hour PM2,5 standard, the due date is Sept 21, 2009 . The New

Hampshire State Implementation Plan was originally submitted to EPA on January 27, 1972, and has undergone numerous revisions since that date. New Hampshire's EPA-approved SIP, which is published in the Code of Federal Regulations at 40 CFR 52 Subpart EE, explicitly fulfills most ofthe requirements of sections 110(a) (1) and (2) . Other section I 10(a) (1) and (2) requirements are fulfilled in applicable chapters and parts fromthe New Hampshire Revised Statutes Annotated (RSA) pertaining to the duties and powers of the Commissioner of the Department of Environmental Services (NHDES) and in applicable chapters and parts fromthe New Hampshire Rules Governing the Control ofAir Pollution, NHAdministrative Rules Env-A 100 et seq. There are fourteen elements within sections I 10(a) (1) and (2) that New Hampshire is required to meet in the certification of adequacy. The specific statutes and administrative rules of the New Hampshire pro-ramthat address those elements are identified in the attached table. Please note that NewHampshire is in the process of amending Part Env-A 303 Primary and Secondary Standards for Particulate Matter and will issue the revised rule following resolution of petition No. 06-1410, American FarmBureau Federation and National Pork Producers Council v. Environmental Protection Agency, before the U.S. Court ofAppeals for the District of Columbia Circuit . Ifyou have any questions, please contact me at (603) 271-1088 or Charlie Martone of my staff at (603) 271-1089.

Robert R . Scott Director Air Resources Division -

cc: Jeffrey T. Under i , NHDES AndrewM

. Bodnarik, NHDES Charles H. Martone, NHDES 

### The State of New Hampshire DEPARTMENT OF ENVIRONMENTAL SERVICES

DES Web Site: www

.des.nh.gov P.O . Box 95, 29 Hazen Drive, Concord, New Hampshire 03302-0095 ~,- .., . . . .,., . .., . . r4.r,~, 171 -~cn'2 c., . . rAn~ -i, 1 1 v, Tnn n ,., .o. . .. o,,, . . NIT-r , _unn_~z : .~or.n