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Study to Evaluate the Impacts to USDWs by Hydraulic Fracturing of Coalbed Methane Reservoirs

The study of coalbed methane (CBM) wells involved interviews with approximately 50 state and local government agency staff members, communications with about 40 citizens who were concerned that CBM production had adversely affected their drinking water wells, and searches for confirmed incidents of drinking water well contamination. EPA published a draft report in August 2002, requested public comment, and incorporated changes as appropriate in the final report.

Below are links to the major documents prepared as part of EPA’s effort to gather and analyze information related to the potential impacts on underground sources of drinking water from the injection of hydraulic fracturing fluids into CBM wells.

Final Study

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Study History and Approach

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