| (A) for sources that are subject to Chapter 101, Subchapter H, Division 3 of this title, a deduction in allowances equal to the increase in NOX emissions at the non-ESAD unit is made as specified in §101.354 of this title (relating to Allowance Deductions); or (B) for sources that are not subject to Chapter 101, Subchapter H, Division 3 of this title, emission credits equal to the increase in NOX emissions at the non-ESAD unit are obtained and used in accordance with §117.9800 of this title (relating to Use of Emission Credits for Compliance). (g) A source that met the definition of major source on December 31, 2000, is always classified as a major source for purposes of this chapter. A source that did not meet the definition of major source (i.e., was a minor source, or did not yet exist) on December 31, 2000, but at any time after December 31, 2000, becomes a major source, is from that time forward always classified as a major source for purposes of this chapter. (h) The availability under subsection (c)(6) of this section of an emission specification for units with an annual capacity factor of 0.0383 or less is based on the unit's status on December 31, 2000. Reduced operation after December 31, 2000, cannot be used to qualify for a more lenient emission specification under subsection (c)(6) of this section than would otherwise apply to the unit. (i) No person shall allow the discharge into the atmosphere from any unit subject to NOX emission specifications in subsection (c) of this section, emissions in excess of the following, except as provided in §117.2025 of this title (relating to Alternative Case Specific Specifications): (1) carbon monoxide (CO), 400 ppmv at 3.0% O 2, dry basis (or alternatively, 3.0 g/hp-hr for stationary internal combustion engines): (A) on a rolling 24-hour averaging period, for units equipped with CEMS or PEMS for CO; and (B) on a one-hour average, for units not equipped with CEMS or PEMS for CO; and (2) for units that inject urea or ammonia into the exhaust stream for NOX control, ammonia emissions of 10 ppmv at 3.0% O2, dry, for boilers and process heaters; 15% O2, dry, for stationary gas turbines (including duct burners used in turbine exhaust ducts) and gas-fired lean-burn engines; and 3.0% O2, dry, for all other units, based on: (A) a block one-hour averaging period for units not equipped with a CEMS or PEMS for ammonia; or (B) a rolling 24-hour averaging period for units equipped with CEMS or PEMS for ammonia. |
