Current through 2024-51, December 18, 2024
Section 096-100-15 - Baseline actual emissions"Baseline actual emissions" for determining net emissions increases means the rate of emissions, in tons per year, of a regulated pollutant as follows:
A. For any existing electric utility steam generating unit, baseline actual emissions means the average rate, in tons per year, at which the unit actually emitted the pollutant during any consecutive 24-month period selected by the owner or operator within the 5-year period immediately preceding the date a complete license application is received by the Department for a license required under Major and Minor Source Air Emission License Regulation, 06-096 CMR 115. The Department may allow the use of a different time period upon a determination that it is more representative of normal source operation. (1) The average rate shall include fugitive emissions to the extent quantifiable, and emissions associated with startups, shutdowns, and malfunctions.(2) The average rate shall be adjusted downward to exclude any non-compliant emissions that occurred while the source was operating above any emission limitation that was legally enforceable during the consecutive 24-month period. (3) For a regulated pollutant, when a project involves multiple emissions units, only one consecutive 24-month period must be used to determine the baseline actual emissions for the emissions units being changed. A different consecutive 24-month period can be used for each regulated pollutant.(4) The average rate shall not be based on any consecutive 24-month period for which there is inadequate information for determining annual emissions, in tons per year, and for adjusting this amount if required by subsection 15(A)(2) of this Chapter.B. For an existing emissions unit (other than an electric utility steam generating unit), baseline actual emissions means the average rate, in tons per year, at which the emissions unit actually emitted the pollutant during any consecutive 24-month period selected by the owner or operator within the 10-year period immediately preceding the date a complete license application is received by the Department for a license required under 06-096 CMR 115.06- 096 C.M.R. ch. 100, § 15