For boilers that are subject to Env-A 1305.09(a) and fire, or are capable of firing, oil or gas, or any combination thereof, the NOx RACT requirements shall be as follows:

1. (a) For tangential or face-fired boilers when firing oil exclusively:

   1. (1) An emission limit of 0.30 lb. per million Btu, based on a 24-hour calendar day average; or
   2. (2) Implement NOx RACT control technology as specified in Env-A 1305.09(b); and
2. (b) For tangential or face-fired boilers when firing gas, or any combination of oil and gas, an emission limit of 0.25 lb. per million Btu based on a 24-hour calendar day average.

Source. (See Revision Note at chapter heading for Env-A 1300) #9803, eff 10-31-10; ss by #12584, eff 8-15-18 (formerly Env-A 1305.13)