# STATE OF CONNECTICUT

DEPARTMENT OF ENVIRONMENTAL PROTECTION

February 9, 2011 David B. Conroy, Chief Air Programs Branch United States Environmental Protection Agency - Region 1 5 Post Office Square, Suite 10 Boston, MA 02109-3912 Conroy.dave@epa.gov
Re: Revision to the Connecticut State Implementation Plan, New Source Review Prevention of Significant Deterioration Permit Program and Title VPermit Program: Permitting of Greenhouse Gas Emissions Dear Mr. Conroy: Pursuant to 40 CFR 51, section 103 and Appendix V, Section 2.1(a), I am submitting an original, paper version of this letter and supporting materials on behalf of the State of Connecticut Department of Environmental Protection to request that your agency approve the enclosed materials as a revision to the Connecticut State Implementation Plan (SIP) for air quality. This document is also submitted in electronic format to your electronic mail address] This SIP submittal consists of revisions, developed in accordance with your agency’s Tailoring Rule, 2 to Connecticut’s new source review prevention of significant deterioration and Title V permit programs. I am very pleased that you granted our request for parallel processing of the approval of this SIP submission, which was proposed in the Federal Register on January 6, 201 t. The regulatory revisions, to sections 22a-174-1, 22a-174-3a and 22a-174-33 of the Regulations of Connecticut State Agencies (RCSA), becan~e effective in the state on January 28,2011 in accordance with all required state and federal procedures for public participation and in satisfaction of the requirements of 40 CFR 51, Appendix V, Section 2. To demonstrate satisfaction of the federal public participation requirements, we have enclosed: a certified copy of the regulatory revisions; the public notice; a list of attendees at the public hearing; certification of public hearing; and a hearing report, which summarizes comments received, identifies the commenters and describes changes made as a result of the comments. We understand that your approval of our regulatory revisions, as proposed on January 6, 2011, assumes that adopted regulations do not differ in any important respect from the version npon which you based your approval. Connecticut’s Legislative Regulations Review Committee approved the January 6, 2011 with minor changes, mainly to the format of internal references ~ CTDEP was instructed by EPA Region 1 staffto forgo the additional paper copies as long as the submitted materials were also submitted in electronic format. 2 Preventi~n~fSign~cantDeteri~rati~nandTitleVGreenh~useGasTail~ringRule(75FR3~5~4;June3,20~0)~

(Printed on Recycled Pape0 79 Elm Street o Hartford, CT 06106-5127

www.ct.gov/dep An Equal Opportunity EmployerDavid B. Conroy

February 9, 2011 Page 2

within RCSA section 22a-174-3a. The specific changes m’e set out on page 2 of the Legislative Commissioner’s Office report, which is included among the attachments to this letter. Please get in touch with me at 860-424-3026 if you have an), questions concerning this submission. Sincerely

Anne R. Gobin, Chief Bureau of Air Management

ARG/MAG/mag Enclosures

CO: Donald Dahl, EPA Region 1, dahl.donald@epa.~ov Ida E. McDomaell, EPA Region t, mcdonnell.ida@ep~