WAC 173-435-015: Significant harm levels.

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WACs > Title 173 > Chapter 173-435 > Section 173-435-015

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173-435-010 << 173-435-015 >> 173-435-020

WAC 173-435-015	No agency filings affecting this section since 2003
Significant harm levels.

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

     (1) Sulfur dioxide - 2,620 µg/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 µg/m³ (0.6 ppm) - 2-hour average.

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

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