A frozen "waterfall" of drilling fluids was visible near Parachute, Colorado, in February 2008. The state says 1.6 million gallons of fracturing fluids leaked from a pit, was transported by groundwater, and ended up seeping out of the cliff. (Colorado Department of Natural Resources) According to state records, the spill migrated underground until it seeped from a cliff side and froze into a gray pillar of ice more than 200 feet tall. When it melted, the fluids dripped into the torrid currents of Parachute Creek and finally dumped into the Colorado River.
Leaks are common on well pads. Sludge pits are one of the most common locations of leaks. Gas drilling is a very messy business. There is a huge price to pay for getting shale gas out of the earth.
Click here to read a ProPublica article published in December 2008.
[Thanks to www.un-naturalgas.org for this photo.]