326 IAC 24-7-4 Baseline heat input and historic emissions

Sec. 4. (a) For purposes of this rule, an existing unit is any unit with a baseline heat input, in MMBtu. Baseline heat input is determined as follows: (1) If a unit commenced commercial operation prior to January 1, 2016, then the following applies: (A) For an allowance allocation for control periods in 2021 and 2022 the baseline heat input is the average of the three (3) highest control period heat inputs in 2008 through 2015. (B) For an allowance allocation for control periods in 2023 and 2024 and every two (2) control periods thereafter, the baseline heat input is the average of the three (3) highest, non-zero control period heat inputs in the eight (8) years before the allocation is calculated. (C) If a unit has only two (2) non-zero heat inputs during the eight (8) years before the allocation is calculated, the baseline heat input is the average of those two (2) non-zero control period heat inputs. (D) If a unit has only one (1) non-zero heat input during the eight (8) years before the allocation is calculated, the baseline heat input is that one (1) non-zero control period heat input. (2) If a unit commenced commercial operation on or after January 1, 2016, and operates each control period during a period of three (3) or more consecutive calendar years, for an allowance allocation under section 3(2) of this rule, the baseline heat input is the average of the three (3) highest, non-zero control period heat input values for the years before the calculation of the allocation, not to exceed eight (8) control periods. (b) For purposes of this rule, new units either: (1) commenced operation on or after January 1, 2016, and do not have a baseline heat input; or (2) did not receive allowances as determined under section 5(c) of this rule, and operated during the control period immediately preceding the year of allocation. (c) The maximum historic emission cap is the maximum SO2 emissions, in tons, that occurred during any control period of the historic emissions period. The historic emissions period is an eight (8) year history for each unit ending with the most recent year of the eight (8) years used for the determination of the heat input under subsection (a). (d) A unit's control period heat input and a unit's total tons of SO2 emissions during a control period under this section must be determined in accordance with 40 CFR 75*. *This document is incorporated by reference. Copies may be obtained from the Government Publishing Office, www.gpo.gov, or are available for review at the Indiana Department of Environmental Management, Office of Legal Counsel, Indiana Government Center North, 100 North Senate Avenue, Thirteenth Floor, Indianapolis, IN 46204.