# STATE OF CONNECTICUT

DEPARTMENT OF ENVIRONMENTAL PROTECTION June 14, 2002 Robert W

. Varney, Regional Administrator United States Environmental Protection Agency - Region 1 EPA, New

England One Congress Street, Suite 1100 Boston, MA02114-2023 Re: New

Source Review

SIPRevision Dear Mr . Varney: The Department of Environmental Protection (Department) recently adopted substantial amendments to both its new source review(NSR) and Title Voperating permit programs. By this correspondence, I am requesting that your agency approve the enclosed materials as a revision to the Connecticut State Implementation Plan for air quality (SIP) . Bythis correspondence the Department is also formally withdrawing fromyour consideration all previous NSRSIP submittals for which the Environmental Protection Agency (EPA) has not taken final action. This withdrawal includes the Department's NSRSIPrevision submittal dated May 23, 1994. The enclosed materials concern the Department's programfor the reviewof new or modified stationary sources ofair pollution. These materials include the amended regulations and associated administrative materials that are necessary for your agency to 

### process this SIP revision as follows: Attachment A- Connecticut Regulations " Section 22a-174-1, Definitions This portion ofAttachment Acontains a recently promulgated amendment to section 22a-174-1 of the Regulations of Connecticut State Agencies concerning the abatement ofair pollution. This section defines terms used throughout the air pollution control regulations. Where practical, the Department incorporated by reference key definitions fromthe Code of Federal Regulations. Please note that certain definitions which apply to only the Title Voperating permit program or state-enforceable programs such as the state hazardous air pollution control program are redacted and should not be considered part of this SIP submittal and request. Also attached is a copy of a letter fromthe Secretary of the State acknowledging receipt of this regulation showing an effective date of March 15, 2002. ( Printed on Recycled Paper ) 79 Elm Street " Hartford, CT 06106 - 5127

http://dep.state.ct .us An Equal Opportunity EmployerRobert W . Varney Page 2 " Section 22a-174-2a, Procedural Requirements for New Source Review

and Title VPermitting This portion ofAttachment Acontains new section 22a-174-2a of the Regulations of Connecticut State Agencies concerning the abatement ofair pollution. Recognizing that both the NSRand Title Voperating permit programs share fundamental procedures that must be followed before either permit may be issued, the Department consolidated all such procedural requirements into section 22a174-2a of the Regulations ofConnecticut State Agencies. Please note that certain procedural requirements which apply to only the Title Voperating permit programare redacted and should not be considered part ofthis SIP submittal and request. Also attached is a copy of a letter fromthe Secretary of the State acknowledging receipt of this regulation showing an effective date ofMarch 15, 2002. " Section 22a-174-3a, Permit to Construct and Operate Stationary Sources This portion ofAttachment Acontains new section 22a-174-3a ofthe Regulations of Connecticut State Agencies concerning the abatement ofair pollution. The Department repealed the former NSR rule set forth in section 22a-174-3 of the Regulations of Connecticut State Agencies in order to establish a Title Vrelated programunder section 112(g) of the Clean Air Act and reconcile certain applicability provisions whereby smaller sources were required to apply for, but not obtain, a state minor NSRpermit . New section 22a-174-3a of the Regulations of Connecticut State Agencies contains all of the federally required elements of a program to construct and operate new or modified sources of air pollution in the State of Connecticut. This regulation sets the requirements for permit applications, standards for granting permits and permit modifications, and establishes the threshold for which a state specific airpollution control permit is required at a level of 15 tons per year of potential emissions. Because the state threshold is more stringent than the federal program, this regulation also provides a qualified exemption fromthe requirement to obtain a NSRpermit when a source operates in a manner that restricts actual emissions significantly below the applicability thresholds. Also attached is a copy of a letter fromthe Secretary of the State acknowledging receipt of this regulation showing an effective date of March 15, 2002. Attachment B- Public Participation This attachment certifies that the Department held a public hearing in accordance with the public notice and that the Department followed appropriate state and federal procedures forpublic participation .Robert W . Varney Page 3 Attachment C - Hearin2 Report This attachment provides a summary of the comments received regarding the regulations along with a description of changes made as a result of the comments. Attachment D- List of Regulatory Provisions Redacted From the NSRSIPRevision This attachment provides,a list of regulatory provisions that are not proposed for inclusion into the SIP

. To ensure this SIP revision does not contain any provisions that are not germane to the NSRprogram, the Department prepared a summary of the redacted provisions. Please contact Chris James at (860) 424-3027 if there are any questions or if additional materials are needed. Thank you for your assistance in this matter .

Cc: Steve Rapp, EPA Brendan McCahill, EPA Chris James, DEP

Encl . AJR/PEF