Antero Resources

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Antero Resources is a Denver-based company that describes itself as "an independent exploration and production (E&P) company engaged in the acquisition, development, and production of unconventional natural gas resources in the United States. Unconventional play types for Antero include fractured shales and tight sands." Antero has properties in the Appalachian Basin in West Virginia and Pennsylvania, the Piceance Basin in Colorado, and the Arkoma Basin in Oklahoma.[1]


In 2009, a wastewater spill flowed into a tributary of Dry Creek in Garfield County, Colorado. It took almost a month for Antero Resources to notify regulators. [2]

In 2010, a land owner observed an odor in water seeping from a gravel pit west of Silt in Garfield County, Colorado. A pipeline carrying wastewater from 36 wells on five well pads in the Colorado River floodplain had leaked and contaminated groundwater. The farmer reported that he used the water for a year after the pipeline was installed. It is unknown when the leak started. Water sampling revealed high levels of benzene, toluene and total xylenes. In May 2013 the Colorado Oil and Gas Conservation Commission fined Antero Resources $150,000 for the spill. The owner used water from the pit for crop irrigation and sometimes disposed of it in the Colorado River.[3]

Legal issues

In May 2012, a district judge dismissed a lawsuit in which a family had accused Antero Resources of harming their health through its exploratory oil and gas operations on Silt Mesa in Colorado. In support of the ruling, the judge pointed to a Colorado Oil and Gas Conservation Commission determination that the family's well water was not affected by oil and gas operations, and also cited defendant testimony that oil and gas operations were conducted according to state rules. The lawsuit had also named Frontier Drilling LLC and Calfrac Well Services as defendants.

The family said they plan to appeal the dismissal of a lawsuit. The family once lived outside Silt but moved to Glenwood Springs to move farther from drilling operations.[4]

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