BAY AREA AIR QUALITY MANAGEMENT DISTRICT
Best Available Control Technology (BACT) Guideline

Source Category

Source: Gas Turbine Revision: 1
Document #: 89.1.5
Class: Combined Cycle (> = 2.0 MW and < 40 MW) Date: 07/18/03

Determination

POLLUTANT

 BACT
1. Technologically Feasible/ Cost Effective
2. Achieved in Practice		 TYPICAL TECHNOLOGY
POC 1. n/d
2.  2.0 ppmv, Dry @ 15%O2 a,b		 1. n/d
2.  Oxidation Catalyst a,b
NOx 1. 2.5 ppmv, Dry @ 15%O2 a (achieved in practice for >12 MW )a
2. 5.0 ppmv, Dry @ 15%O2 a,b		 1. SCR + Water or Steam Injection; or SCONOx a


 2. SCR + Water or Steam Injection a,b
SO2 1. Natural Gas Fuel a
2.  Natural Gas Fuel a		 1.  Fuel Selection a
2.  Fuel Selection a
CO 1.  n/d
2.  6.0 ppmv, Dry @15% O2 a,b		 1.  n/d
2.  Oxidation Catalyst a,b
PM10 1. Natural Gas Fuel a
 2.  Natural Gas Fuel a,b		 1.  Fuel Selection a
2.  Fuel Selection a,b
NPOC 1.  n/a
2.  n/a		 1.  n/a
2.  n/a

References

a. Guidance for the Permitting of Electrical Generation Technologies, CalEPA Air Resources Board, Stationary Source Division, July 2002
b. Application #10962, UCSF Cogeneration Plant