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

Source Category

Source: Boiler, Rental Revision: 1
Document #: 16.1
Class: On-site < 6 consecutive months from the date of initial operation Date: 1/26/99

Determination

POLLUTANT

BACT
1. Technologically Feasible/ Cost Effective
2. Achieved in Practice

TYPICAL TECHNOLOGY

POC

 1. n/d
2. n/s		 1. n/d
2. Good Combustion Practicea

NOx

 1. n/d
2. 25 ppmv @ 3% O2 Dry, a,b,c		 1. n/d
2. Low NOx Burners + Flue Gas Recirculationa

SO2

 1. Natural Gas, or Treated Refinery Gas Fuel w/ < 50 ppmv Hydrogen Sulfide and <100 ppmv Total Reduced Sulfur a,b
2. Natural Gas, or Treated Refinery Gas Fuel w/ <100 ppmv Total Reduced Sulfur a,b		 1. Fuel Selection a,b


2. Fuel Selection a,b

CO

 1. n/d
2. 100 ppmv @ 3% O2 Dry a,b,d		 1. n/d
2. Good Combustion Practice a,b,d

PM10

 1. n/d
2. Natural Gas or Treated Refinery Gas Fuel a,b		 1.  n/d
2.  Fuel Selection a,b

NPOC

 1. n/a
2. n/a		 1. n/a
2. n/a

References

a. BAAQMD staff report
b. BACT is 25 ppmvd NOx @ 3% O2 and 100 ppmvd CO @ 3 % O2 regardless of fuel.  However, emergency backup fuel oil w/ < 0.05 wt. % sulfur may be permitted to emit up to 60 NOx ppmvd @ 3% O2 and 100 ppmvd CO @ 3 % O2 during natural gas curtailment.
c. NOx  determination by BAAQMD Source Test method ST-13A (average of three 30-minute sampling runs), or BAAQMD approved equivalent.
d. CO determination by BAAQMD Source Test Method ST-6 (average of three 30 minute sampling runs), or BAAQMD approved equivalent.