“EPA set the safe exposure level at 0.00014 ppm to protect children and the elderly. http://ohsonline.com/articles/2007/10/human-health-effects-from-exposure-to-lowlevel-concentrations-of-hydrogen-sulfide.aspx
Also on Saturday Oct 30 2010 the Bluebird Park plaground in Chalmette Vista neighborhood Ch_Vista Community Air Monitor site reading for hydrogen sulfide spiked to 10 ppb or 0.01 ppm, and the particulate matter 2.5 reading spiked to 28 ppb.
also accessible at http://www.deq.louisiana.gov/portal/ right hand menu, select ON AIR, select "Site Data"
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