It is used by environmental consultants and site managers for contaminated and industrial sites, groundwater investigations, landfill and regulatory compliance.

Complaints from a few residents on water quality in a developed natural gas field prompted an EPA groundwater investigation in Wyoming.

EPA has released a draft report outlining findings from the Pavillion, Wyoming groundwater investigation for public comment and independent scientific peer-review.

The Pavillion groundwater investigation is being conducted by EPA's regional office in Denver in collaboration with scientists from our Office of Research and Development.

Spontaneous potentials are often measured down boreholes for formation evaluation in the oil and gas industry, and they can also be measured along the Earth's surface for mineral exploration or groundwater investigation.

Complaints about water quality from residents near a gas field in Pavillion, Wyoming prompted an EPA groundwater investigation, which reported detections of methane and other chemicals, some used or produced in fracking, and some at dangerous levels.