(Adopted May 6, 1977)(Amended April 4, 1980)

RULE 703. EPISODE CRITERIA

For the purpose of Regulation VII, the following episode criteria shall apply:

Averaging Stage Stage Stage

Contaminant Time 1 2 3

Ozone 1 Hour .20 ppm .35 ppm .50 ppm

Ozone, In

Combination with (1) (1) (1)

Sulfur Dioxide

Carbon Monoxide 1 Hour .20 ppm .35 ppm .50 ppm

1 Hour 40 ppm 75 ppm 100 ppm

for one hour and predicted for one additional hour

12 Hours 20 ppm 35 ppm 50 ppm

Sulfur Dioxide 1 Hour 0.5 ppm 1.0 ppm 2.0 ppm

24 Hours 0.2 ppm 0.7 ppm 0.9 ppm

Ozone, In

Combination 24 Hours 25 ug/m3

with Sulfate (Sulfate)

1 Hour 0.20 ppm

(Ozone)

  1. (1) These levels shall apply when the ozone concentration and the sulfur dioxide concentration each exceeds 0.10 ppm, one-hour average, and shall be determined by adding the ozone and sulfur dioxide concentration.