SO₂ Scrubbers                                      220
Pulp and Paper Boilers                         65
Dissolving Tank Vents                            60
Incinerators                                          110
Lime Sludge Kilns                                   95
Lime Slakers                                           34
Iron  Foundries                                       43
Steel Mills and Coke Ovens                   45
Miscellanous Venturi Scrubber              95
             Miscellaneous Scrubbers                      656            

All Scrubbers                                      1,423
 

Note:    Number of Na₂CO₃ based FGD Systems = 189
                Number of NaOH based FGD Systems = 112