Hourly readings in last day have averaged 15-20 times above the EPA's "safe exposure level"
Human Health Effects from Exposure to Low-Level Concentrations of Hydrogen Sulfide, Occupational Health & Safety, October 2007:
EPA set the safe exposure level at 0.00014 ppm. [.14 ppb]
From the CDC: The EPA is monitoring air quality in the Gulf Coast region. The maps and charts are available here.
*UPDATE: Within hours of posting this report there was more news from Buras (population 3358): 'Boat explodes in Gulf injuring former Plaquemines Parish Councilman; Man evacuated by Coast Guard helicopter (Buras, LA)'
More recent happenings in Buras: