Although there is not yet enough data to document chronic exposure, readings taken in South County indicate cause for concern ...

Hydrogen sulfide occurs in nature and is also produced and used in different industries. In nature, it occurs naturally in sewers, manure pits, well water, oil and gas wells and volcanoes.

Emissions of hydrogen sulfide raise health concerns in communities near California's largest lake, researchers say. Salton Sea is emitting foul-smelling gas at high levels, study says - Los ...

At least two workers at a Houston-area oil refinery were killed when hydrogen sulfide leaked at the plant, setting off urgent warnings for nearby residents to stay indoors before authorities ...

Groundlevel hydrogen sulfide concentrations over 0.08 ppm, averaged over a 30-minute period, are prohibited by state law if the emissions affect residential or commercial property.

A deadly hydrogen sulfide leak at the PEMEX facility in Deer Park claimed two lives and sent 13 others to the hospital. ... Texas – The U.S. Chemical Safety and Hazard Investigation Board ...