EPA's Study of Hydraulic Fracturing and Its Potential Impact on Drinking Water Resources

QAPP for Hydraulic Fracturing Retrospective Case Study, Marcellus Shale, Washington County, PA (GWERD)

This QAPP describes the technical details and associated quality assurance and quality control procedures for the Washington County, Pennsylvania, Marcellus Shale case study.

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QAPP for Hydraulic Fracturing Retrospective Case Study, Marcellus Shale, Washington County, PA, Revised August 22, 2013 (PDF)(104 pp, 2 MB)