Section 225.237  Emission Standards for New Sources with EGUs

a)         Standards.

1)         The owner or operator of a source with one or more EGUs, but that previously had not had any EGUs that commenced commercial operation before January 1, 2009, must comply with one of the following emission standards for each EGU on a rolling 12-month basis: 

A)        An emission standard of 0.0080 lb mercury/GWh gross electrical output; or

B)        A minimum 90 percent reduction of input mercury.

2)         For this purpose, compliance may be demonstrated using the equations in Section 225.230(a)(2), (a)(3), or (b)(2).

b)         The initial 12-month rolling period for which compliance with the emission standards of subsection (a)(1) of this Section must be demonstrated for a new EGU will commence on the date that the initial performance test for the mercury emission standard under 40 CFR 60.45a also commences.  The CEMS required by this Subpart B for mercury emissions from the EGU must be certified prior to this date.  Thereafter, compliance must be demonstrated on a rolling 12-month basis based on calendar months.