Table 2.6        Guidelines for Establishing Action and Limit Levels for Air Quality

Parameters

Action Level

Limit Level

 

1-hour TSP

 

·      If BL ≤ 384 μg/m3, AL = (BL × 1.3 + LL) ÷ 2

·      If BL > 384 μg/m3, AL = LL

500 μg/m3

 

24-hour TSP

 

·      If BL ≤ 200 μg/m3, AL = (BL × 1.3 + LL) ÷ 2

·      If BL > 200 μg/m3, AL = LL

260 μg/m3