Wash. Admin. Code § 173-435-015

Current through Register Vol. 24-20, October 15, 2024

Section 173-435-015 - Significant harm levels

Significant harm levels are reached when any one of the following pollutant concentrations are measured:

(1) Sulfur dioxide - 2,620 MICROg/m³ (1.0 ppm), 24-hour average.

(2) PM-10 - 600 micrograms/cubic meter, 24-hour average.

(3) Carbon monoxide - 57.5 mg/m³ (50 ppm), 8-hour average, 86.3 mg/m³ (75 ppm) 4-hour average, 144 mg/m³ (125 ppm) 1-hour average.

(4) Ozone - 1,200 MICROg/m³ (0.6 ppm) - 2-hour average.

(5) Nitrogen dioxide - 3,750 MICROg/m³ (2.0 ppm) 1-hour average, 938 MICROg/m³ (0.5 ppm) 24-hour average.

Wash. Admin. Code § 173-435-015

Statutory Authority: Chapters 70.94 and 43.21A RCW. 89-02-055 (Order 88-39), § 173-435-015, filed 1/3/89.