Stationary internal combustion engines that do not meet the applicability criteria of 40 CFR §60.4200 or §60.4230, shall be subject to the hourly average NOx RACT emission limits specified below:

1. (a) For gas-fired units that are:

   1. (1) Rich burn stationary internal combustion engines, the standard shall be 1.5 grams per rated brake horsepower per hour (bhp-hr); and
   2. (2) Lean burn stationary internal combustion engines, the standard shall be 2.5 grams per bhp-hr; and

2. (b) For liquid fuel-fired units that are:

   1. (1) Stationary internal combustion engines with a maximum engine power of greater than 560 KW or 750 hp, the standard shall be 6.4 grams per kilowatt-hour (kW-hr); and
   2. (2) Stationary internal combustion engines with a maximum engine power of less than or equal to 560 KW or 750 hp, the standard shall be 4.0 grams per kilowatt-hour (kW-hr).

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