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picture source: http://sitesmedia.s3.amazonaws.com/boussonadvisorygroup/files/2012/11/Fracking2.jpg
(Please, click on link for a larger picture)
the source link: http://sites.allegheny.edu/boussonadvisorygroup/how-hydraulic-fracturing-works/
"....Beginning in February, 2011, the New York Times began running a series of investigative reports by Ian Urbani on fracking , and particularly fracking in the New York City watershed.
An excerpt:
"There were more than 493,000 active natural-gas wells in the United States in 2009, almost double the number in 1990. Around 90 percent have used hydrofracking to get more gas flowing, according to the drilling industry.
"Gas has seeped into underground drinking-water supplies in at least five states, including Colorado, Ohio, Pennsylvania, Texas and West Virginia, and residents blamed natural-gas drilling.
"Air pollution caused by natural-gas drilling is a growing threat, too. Wyoming, for example, failed in 2009 to meet federal standards for air quality for the first time in its history partly because of the fumes containing benzene and toluene from roughly 27,000 wells, the vast majority drilled in the past five years. In a sparsely populated Sublette County in Wyoming, which has some of the highest concentrations of wells, vapors reacting to sunlight have contributed to levels of ozone higher than those recorded in Houston and Los Angeles."
"The thousands of internal documents obtained by The New York Times from the Environmental Protection Agency, state regulators and drillers show that the dangers to the environment and health are greater than previously understood. The documents reveal that the wastewater, which is sometimes hauled to sewage plants not designed to treat it and then discharged into rivers that supply drinking water, contains radioactivity at levels higher than previously known, and far higher than the level that federal regulators say is safe for these treatment plants to handle.
"Other documents and interviews show that many E.P.A. scientists are alarmed, warning that the drilling waste is a threat to drinking water in Pennsylvania. Their concern is based partly on a 2009 study, never made public, written by an E.P.A. consultant who concluded that some sewage treatment plants were incapable of removing certain drilling waste contaminants and were probably violating the law. The Times also found never-reported studies by the E.P.A.and a confidential study by the drilling industry that all concluded that radioactivity in drilling waste cannot be fully diluted in rivers and other waterways." ...."
Ecoversity - Case Focus -- Fracking for gas
"Fracking is a problem and NOT an answer !"
Ak Malten, Pro Peaceful Energy Use
Ecoversity - Case Focus -- Fracking for Gas | |
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