BAY AREA AIR QUALITY MANAGEMENT DISTRICT

REGULATION 4 - AIR POLLUTION EPISODE PLAN

INDEX

4-100 GENERAL

4-300 STANDARDS

4-400 ADMINISTRATIVE REQUIREMENTS

4-500 MONITORING AND RECORDS (Not Included)

4-600 MANUAL OF PROCEDURES (Not Included)






REGULATION 4

AIR POLLUTION EPISODE PLAN

4-100 GENERAL

4-300 STANDARDS

4-400 ADMINISTRATIVE REQUIREMENTS


REGULATION 4

TABLE 1

EPISODE STAGE CRITERIA

Contaminant Averaging Time Health Advisory Stage 1

Alert
Stage II

Warning
Stage III

Emergency
Ozone 1hr. 0.15 ppm   0.20 ppm 0.35 ppm 0.50 ppm
Ozone in combination with sulfur dioxide   1 hr.   0.20 ppm* 0.35 ppm* 0.50 ppm*
Carbon Monoxide   1 hr.   40 ppm 75 ppm 100 ppm
  4 hrs.

8 hrs
    25 ppm

15 ppm
45 ppm

30 ppm
60 ppm

40 ppm
Sulfur Dioxide   1 hr.

24 hrs.
  0.5 ppm

0.2 ppm
1.0 ppm

0.7 ppm
2.0 ppm

0.9 ppm
PM10   24 hrs.   350 ug/m3 420 ug/m3 500 ug/m3
Sulfate in combination with oxidant   24 hrs. (sulfate 1hr. ozone)     25 ug/m3

0.20 ppm
 

(Amended March 20, 1991)

* These levels shall apply when the ozone concentration and the sulfur dioxide concentration each exceed 0.10 ppm, one hour average, and shall be determined by adding the ozone an