A hydraulic-fracturing company says that many of its suppliers haven't responded after a court requested information on chemicals found in 55 products used in its Washington County, Penn., drilling operations, court documents show. The request for the chemical components came during the discovery phase of a lawsuit alleging that wastewater from Range Resources' fracking operations contaminated well water. Documents from the suit are being presented as part of a resident's appeal to the Pennsylvania Environmental Hearing Board.

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