Definition(s)

Potentially Hazardous Volume Of Hydrogen Sulfide

A volume of hydrogen sulfide gas of such concentration that:

  1. the 100 ppm radius of exposure is in excess of 50 feet and includes any part of a “public area” except a public road; or
  2. the 500 ppm radius of exposure is greater than 50 feet and includes any part of a public road; or
  3. the 100 ppm radius of exposure is greater than 3,000 feet.1

Source: Oil and Gas Division, Texas Administrative Code, Title 16, Chapter 3, February 2013. Regulations

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