DENVER (AP) - Colorado oil and natural gas regulators on Monday approved rules making the state the first to require energy companies to do groundwater sampling both before and after they drill.

NorthWestern Energy will sample groundwater on Butte-Silver Bow property at the request of the Montana Department of Environmental Quality after the utility company found an oil sheen in the ...

DENVER — Colorado oil and natural gas regulators on Monday approved rules making the state the first to require energy companies to do groundwater sampling both before and after they drill. The ...

Oil and gas have contaminated groundwater in 17 percent of the 2,078 spills and slow releases that companies reported to state regulators over the past five years, state data show.

November 14, 2012 / 9:20 AM MST / CBS Colorado DENVER (AP) — Groundwater near oil and gas wells is up for discussion by the Colorado Oil and Gas Conservation Commission.

“For instance, elevated detections of fuel products in groundwater and soil vapor monitoring in individual sampling locations may drop to normal levels and then show up again in days or weeks.” ...

Energy companies countered that wells are so close together there that it doesn’t make sense to require more sampling.The state commission said an existing program in Weld County provides water well ...

Tuesday, May 27, 2025 79° Today's Paper Hawaii News Red Hill monitoring results show elevated levels of petroleum chemicals in soil vapor and groundwater ...

DENVER - Colorado oil and natural gas regulators on Monday approved rules making the state the first to require energy companies to do groundwater sampling both before and after ...