Section 101.106 - Baseline Amount Calculation(a) For the purposes of this subchapter, the baseline amount must be computed as the lower of the following: (1) total amount of baseline emissions; or(2) total emissions allowed under authorizations, including authorized emissions from maintenance, shutdown, and startup activities, applicable to the source in the attainment year.(b) For the purposes of this subchapter, the baseline emissions must be from: (1) the attainment year; or(2) if the regulated entity's emissions are irregular, cyclical, or otherwise vary significantly from year to year, any single 24-month consecutive period within a historical period preceding the calendar year containing the attainment year to compute an average baseline emissions amount (tons per year) for the major stationary source. If used, the historical period must be:(A) ten years for non-electric utility steam generating units; or(B) five years for electrical utility steam generating units.(c) If a major stationary source uses a historical consecutive period as defined in subsection (b)(2) of this section, the baseline amount estimation will:(1) use adequate data for calculating the baseline emissions units;(2) be adjusted downward to exclude any noncompliant emission that occurred while the source was operating above an emissions limitation that was legally enforceable during the consecutive 24-month period; and(3) be adjusted downward to exclude any emissions that would have exceeded an emission limitation with which the source had to comply by November 15, 2007, had such a major stationary source been required to comply with such limitations during the consecutive 24-month period.(d) When control or ownership of emission units changes during the attainment year, the emissions from those emission units will be attributed to the major stationary source with control or ownership of the emission unit on December 31st of the attainment year.(e) A baseline amount, reported in units of tons, must be calculated separately for volatile organic compounds and for nitrogen oxides. The calculation must be made for each pollutant for which the source meets the major source applicability requirements of § 101.101 of this title (relating to Applicability).(f) The baseline amount calculation is subject to approval by the executive director. The baseline amount will be fixed and not be changed without the approval of the executive director except as allowed under § 101.109 of this title (relating to Adjustment of Baseline Amount) until the Failure to Attain Fee no longer applies to the area as described under § 101.118 of this title (relating to Cessation of Program).30 Tex. Admin. Code § 101.106
The provisions of this §101.106 adopted to be effective June 12, 2013, 38 TexReg 3610