YOLO-SOLANO AIR QUALITY MANAGEMENT DISTRICT

RULE 7.2 - CONTROL INITIATION LEVELS

Corrective control measures will be initiated in event that carbon monoxide concentrations exceed 40 ppm average over 12 hours and are expected to persist or increase in the event that oxidant as ozone exceeds 0.20 ppm over one hour and is expected to persist or increase. Additional actions are to be taken in respect to concentration levels given in Table 1 below. Action is to be initiated when the concentration of a pollutant is predicted or reached for any stage. The APCO will coordinate as appropriate the episode actions including control actions with other APCDs. Such actions will include response to notices of episodes from other air pollution control districts.


   

TABLE I

   

Pollutant

Averaging Time

Stage 1

Stage 2

Stage 3

Carbon Monoxide

1 hr

40 ppm

75 ppm

100 ppm

Carbon Monoxide

12 hr

20 ppm

35 ppm

50 ppm

Oxidant as Ozone

1 hr

0.20 ppm

0.35 ppm

0.50 ppm