The NOx RACT requirements for wet-bottom utility boilers firing coal, whether by itself or in combination with any other fuel(s) shall be as follows:

1. (a) For tangential or face-fired boilers, an emission limit of 1.0 lb. per million Btu, based on a 24-hour calendar day average;

2. (b) For cyclone-fired boilers having a maximum nameplate capacity of less than 320 megawatts and equipped with a SCR system an emission limit of:

   1. (1)
   2. 0. 22 lb. per million Btu, based on a 24-hour calendar day average, except as provided in (2) below; or
   3. (2)
   4. 4. 0 tons per day on any calendar day during which a startup, shutdown or low-load operation occurs; and

3. (c) For cyclone-fired boilers having a maximum nameplate capacity of equal to or greater than 320 megawatts and equipped with a SCR system an emission limit of:

   1. (1)
   2. 0. 22 lb. per million Btu, based on a 24-hour calendar day average, except as provided in (2) below; or
   3. (2)
   4. 11. 5 tons per day on any calendar day during which a startup, shutdown or low-load operation occurs.

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 1303.05)