CNG: Clean, but it leaves your water dirty
Is natural gas really clean?Fascinating piece on new and mounting research demonstrating that the most common way form natural gas drilling and exploration, hydraulic fracturing, is leading to contaminated drinking water, despite EPA beliefs.
SCIAM reports, "Over the last few years, however, a series of contamination incidents have raised questions about that EPA study and ignited a debate over whether the chemicals used in hydraulic fracturing may threaten the nation’s increasingly precious drinking water supply."
Labels: natural
posted by Dahcredyns @ 7:58 AM
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1 Comments:
Hydraulic fracturing takes place usually a mile to a mile and a half in the ground. The drilling itself is more likely to cause problems since you are circulating mud (usually) through the drilling column, including the aquifer, during the initial stages of drilling. The aquifer is then isolated with cement and metal tubing to prevent further interaction between the drilling fluid and the aquifer, but still. IF the oil and gas industry is causing water contamination, this is the most likely cause, not fraccing. Incidently, fraccing is usually done right after drilling, so linking the time of fraccing to the time of well contamination is a false corralation.
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