| (h) Monitoring for stationary gas turbines less than 30 MW. The owner or operator of any stationary gas turbine rated less than 30 MW using steam or water injection to comply with the emission specifications of §117.105 of this title or §117.115 of this title (relating to Alternative Plant-Wide Emission Specifications) shall either: (1) install, calibrate, maintain, and operate a NOX CEMS or PEMS in compliance with this section and monitor CO in compliance with subsection (d) of this section; or (2) install, calibrate, maintain, and operate a continuous monitoring system to monitor and record the average hourly fuel and steam or water consumption: (A) the system must be accurate to within ± 5.0%; (B) the steam-to-fuel or water-to-fuel ratio monitoring data must be used for demonstrating continuous compliance with the applicable emission specification of §117.105 or §117.115 of this title; and (C) steam or water injection control algorithms are subject to executive director approval. (i) Run time meters. The owner or operator of any stationary gas turbine or stationary internal combustion engine claimed exempt using the exemption of §117.103(a)(6)(D), (b)(2), or (b)(8) of this title shall record the operating time with an elapsed run time meter. Any run time meter installed on or after October 1, 2001, must be non-resettable. (j) Hydrogen (H2) monitoring. The owner or operator claiming the H2 multiplier of §117.105(b)(6) or §117.115(g)(4) or (h) of this title shall sample, analyze, and record every three hours the fuel gas composition to determine the volume percent H2. (1) The total H2 volume flow in all gaseous fuel streams to the unit must be divided by the total gaseous volume flow to determine the volume percent of H2 in the fuel supply to the unit. (2) Fuel gas analysis must be tested according to American Society for Testing and Materials (ASTM) Method D1945-81 or ASTM Method D2650-83, or other methods that are demonstrated to the satisfaction of the executive director and the United States Environmental Protection Agency to be equivalent. (3) A gaseous fuel stream containing 99% H2 by volume or greater may use the following procedure to be exempted from the sampling and analysis requirements of this subsection. (A) A fuel gas analysis must be performed initially using one of the test methods in this subsection to demonstrate that the gaseous fuel stream is 99% H2 by volume or greater. (B) The process flow diagram of the process unit that is the source of the H2 must be supplied to the executive director to illustrate the source and supply of the hydrogen stream. (C) The owner or operator shall certify that the gaseous fuel stream containing H2 will continuously remain, as a minimum, at 99% H2 by volume or greater during its use as a fuel to the combustion unit. (k) Data used for compliance. After the initial demonstration of compliance required by §117.135 of this title, the methods required in this section must be used to determine compliance with the emission specifications of §117.105 or §117.110(a) of this title. For enforcement purposes, the executive director may also use other commission compliance methods to determine whether the source is in compliance with applicable emission specifications. (l) Enforcement of NOX RACT limits. If compliance with §117.105 of this title is selected, no unit subject to §117.105 of this title may be operated at an emission rate higher than that allowed by the emission specifications of §117.105 of this title. If compliance with §117.115 of this title is selected, no unit subject to §117.115 of this title may be operated at an emission rate higher than that approved by the executive director under §117.152(b) of this title (relating to Final Control Plan Procedures for Reasonably Available Control Technology). (m) Loss of NOX RACT exemption. The owner or operator of any unit claimed exempt from the emission specifications of this division using the low annual capacity factor exemption of §117.103(b)(2) of this title shall notify the executive director within seven days if the Btu/yr or hour-per-year limit specified in §117.10 of this title (relating to Definitions), as appropriate, is exceeded. (1) If the limit is exceeded, the exemption from the emission specifications of this division is permanently withdrawn. (2) Within 90 days after loss of the exemption, the owner or operator shall submit a compliance plan detailing a plan to meet the applicable compliance limit as soon as possible, but no later than 24 months after exceeding the limit. The plan must include a schedule of increments of progress for the installation of the required control equipment. (3) The schedule is subject to the review and approval of the executive director. |
