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Politics : Rat's Nest - Chronicles of Collapse

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To: Wharf Rat who wrote (12371)	7/1/2011 6:35:11 PM
From: Wharf Rat	Read Replies (1) of 24228

pnas.org "In active gas-extraction areas (one or more gas wells within 1 km), average and maximum methane concentrations in drinking-water wells increased with proximity to the nearest gas well and were 19.2 and 64 mg CH4 L-1 (n = 26), a potential explosion hazard; in contrast, dissolved methane samples in neighboring nonextraction sites (no gas wells within 1 km) within similar geologic formations and hydrogeologic regimes averaged only 1.1 mg L-1 (P < 0.05; n = 34)."

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