Chuck Haralson and Ken Smith were inducted into the Arkansas Tourism Hall of Fame during the 43rd annual Governor’s Conference on Tourism
Good news for the shale gas industry in a report released today by the U.S. Geological Survey:
A study that examined the water quality of 127 shallow domestic wells in the Fayetteville Shale natural gas production area of Arkansas found no groundwater contamination associated with gas production, according to a report released today by the U.S. Geological Survey.
Scientists analyzed water-quality data from samples taken in Van Buren and Faulkner counties in 2011, focusing on chloride concentrations from 127 wells and methane concentrations and carbon isotope ratios from a subsample of 51 wells.
"For more than one hundred years, the USGS has been a source of freely available, unbiased information on our natural resources such as oil, gas, and water, helping government and local leaders make wise decisions for the public good," said USGS Director Marcia McNutt. "This new study is important in terms of finding no significant effects on groundwater quality from shale gas development within the area of sampling."
Chloride is a naturally occurring ion that is found at elevated levels in waters associated with gas production. Chloride moves easily through groundwater without reacting with other ions or compounds in solution, making it is a good indicator of whether chemicals used during hydraulic fracturing are reaching groundwater. In this case, the chloride concentrations from this study were not higher than samples taken from nearby areas from 1951 through 1983.
Methane is the primary component of natural gas, but also can be found naturally in shallow shale formations in the Fayetteville Shale area that are used as sources of water for domestic supplies. What methane was found in the water, taken from domestic wells, was either naturally occurring, or could not be attributed to natural gas production activities.
"None of the data that we have looked at as part of this study suggests that any groundwater contamination is resulting from natural gas production activities," said USGS hydrologist Tim Kresse. "However, this study does not speak to other wells that were not sampled, every chemical used during the hydraulic fracturing process, or water quality changes that might take longer to occur. It does provide a baseline to use to evaluate any possible changes in the future."
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