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UNITED STATES ENVIRONMENTAL PROTECTION AGENCY
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REGION 8
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1595 Wynkoop Street
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DENVER, CO   80202-1129
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Phone 800-227-8917
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http://www.epa.gov/region08
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Ref:  8RA									September 30, 2013

MEMORANDUM for RECORD

SUBJECT:	Phone call from Colleen Delaney, Utah DEQ, on Sept. 20, 2013 regarding our proposed disapproval of the definition of Minor Source Baseline Date in the GHG Tailoring Rule. 

FROM:	Jody Ostendorf
		SIP Program Manager 

TO:		Docket ID:  EPA-R08-OAR-2012-0300



	During this phone call, Colleen brought to my attention that a subsequent SIP submittal had removed the Minor Source Baseline Date definition that we had previously proposed to disapprove.  We proposed to disapprove R307-405-3(2)(a)(i), consistent with our final action on July 15, 2011 (76 FR 41712),  because it defines "Minor Source Baseline Date" in a manner inconsistent with the federal definition.  However, Utah removed the Minor Source Baseline Date in a subsequent March 19, 2012 SIP submittal. In our final action on that submittal, which was signed on September 30, 2013, we incorporated into the SIP the required definition for State programs at 40 CFR 51.166(b)(14): 
(ii)  "Minor source baseline date" means the earliest date after the trigger date on which  a major stationary source or a major modification subject to 40 CFR 52.21 or to regulations approved pursuant to 40 CFR 51.166 submits a complete application under the relevant regulations.  The trigger date is:
(A)  In the case of PM10 and sulfur dioxide, August 7, 1977;
(B)  In the case of nitrogen dioxide, February 8, 1988; and
(C)  In the case of PM2.5 , October 20, 2011.
      Because we have re-established and incorporated into Utah's SIP the required definition of Minor Source Baseline Date in our September 30, 2013 final action, we do not need to act on it here.

