Concentrations

Researchers with the National Institute for Occupational Safety and Health (NIOSH) said nine oil and gas extraction workers were killed over a five-year period after inhaling volatile organic compounds (VOCs) while manually gauging or sampling production tanks at oil and gas well sites.

Shale gas production activities in the Barnett Shale have not resulted in volatile organic compound (VOC) exposures great enough to pose a health concern for area residents, according to a new study of the region’s air quality.

Louisiana’s Office of Conservation plans to drill an observational water well to test for concentrations of natural gas in the Mississippi River Alluvial Aquifer between the western side of a troubled salt dome and the Bayou Corne Community in the southern part of the state.

Last year global concentrations of carbon dioxide (CO2), methane and nitrous oxide — the main long-lived greenhouse gases (GHG) in the atmosphere — reached the highest levels recorded since pre-industrial times, according to the World Meteorological Organization (WMO), an agency of the United Nations (UN).

Droughts, heavy downpours, excessive heat and intense hurricanes are likely to become more common as humans continue to increase the atmospheric concentrations of heat-trapping greenhouse gases (GHG), according to a scientific assessment of observed and projected changes in weather and climate extremes in North America and U.S. territories.

Droughts, heavy downpours, excessive heat and intense hurricanes are likely to become more common as humans continue to increase the atmospheric concentrations of heat-trapping greenhouse gases (GHG), according to a scientific assessment of observed and projected changes in weather and climate extremes in North America and U.S. territories.

Florida Gas Transmission advised shippers that it has received gas “at certain receipt points” in Zones 1, 2 and 3 containing high concentrations of hexane and heavier components that may interfere with operation of pipeline facilities. If the composition of the gas containing the objectionable components does not change, FGT said it may be required to limit such receipts. “If necessary, FGT will advise of the specific locations where these limits may be imposed,” a bulletin board posting said Wednesday.