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Scientists warn time to stop drilling in the dark
Date:8/1/2014

ds fragmented by a dense web of roads, pipelines and well pads. At what point does the canvas fall apart? And what are the ecological implications for wide-ranging, sensitive species such as caribou or grizzly bears?"

  • Determining the environmental impact of chemical contamination from spills, well-casing failure and other accidents associated with shale gas production must become a top priority.

    Shale-drilling operations for oil and natural gas have increased by more than 700 per cent in the United States since 2007 and Western Canada is undergoing a similar shale gas production boom. But the industry's effects on nature and wildlife are not well understood. Accurate data on the release of fracturing chemicals into the environment needs to be gathered before understanding can improve.

  • The lack of accessible and reliable information on spills, wastewater disposal and fracturing fluids is greatly impeding improved understanding. This study identifies that only five of 24 American states with active shale gas reservoirs maintain public records of spills and accidents.

    The authors reviewed chemical disclosure statements for 150 wells in three top-gas producing American states and found that, on average, two out of three wells were fractured with at least one undisclosed chemical. Some of the wells in the chemical disclosure registry were fractured with fluid containing 20 or more undisclosed chemicals.

    The authors call this an arbitrary and inconsistent standard of chemical disclosure. This is particularly worrisome given the chemical makeup of fracturing fluid and wastewater, which can include carcinogens and radioactive substances, is often unknown.

    "Past lessons from large scale resource extraction and energy development large dams, intensive forestry, or biofuel plantations have shown us that development that outpaces our understanding of ecological impacts can have dire unintended consequ
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  • Contact: Carol Thorbes
    cthorbes@sfu.ca
    778-782-3035
    Simon Fraser University
    Source:Eurekalert  

    Page: 1 2 3

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