Concerned Citizens Around Murphy: October Air Quality St Bernard Parish

The EPA recommended daily exposure to hydrogen sulfide (H2S) is 1.4 parts per billion (ppb) (0.0014 ppm) and was exceeded throughout the month.…..inhaling more than this concentration on a daily basis poses an appreciable risk of deleterious effects.

http://www.epa.gov/iris/toxreviews/0061tr.pdf . "Exposure to lower concentrations can result in eye irritation, a sore throat and cough, nausea, shortness of breath, and fluid in the lungs." "Long-term, low-level exposure may result in fatigue, loss of appetite, headaches, irritability, poor memory, and dizziness."

http://en.wikipedia.org/wiki/Hydrogen_sulfide
http://concernedcitizensaroundmurphy.blogspot.com/2012/02/hydrogen-sulfide-exposure.h

The State of California air quality standard limits ambient levels of hydrogen sulfide to 30 ppb H2S. The State of Louisiana has does not have such a standard. Hydrogen sulfide levels in Chalmette Vista exceeded 30 ppb H2S in October 2012, with the highest reading at 53 ppb H2S.

Other States have lower hydrogen sulfide air quality limits.
Other states

The EPA health standard for sulfur dioxide is 75 ppb SO2. The Louisiana DEQ has stated Sulfur Dioxide (SO2) at the 12 ppb SO2 level triggers headaches and other adverse effects.

The health standard for fine particulate matter (PM2.5) is 35 ug/m3. This standard was exceeded already in October 2012, according to the three community monitors.
Air Quality in October in St Bernard Parish