How do I calculate diesel generator emissions?

From AP-42 . Chapter 3.1 , Table 3.3-1 Multiply power by AP-42 factor Example for NOx: 300 HP * (0.031 lb/HP-hr ) = 9.3 lb/hr Apply the same method for SO2, PM10 and CO Factors : SO2 = 0.00205 CO = 0.0068 PM10 = 0.0022 Good Look...!