08/28/2010 05:12 am ET Updated May 25, 2011

Colorado Oil And Gas Spills: Millions Of Gallons Of Drilling Liquids Spilled Over Last 2 1/2 Years

Oil and gas companies have reported almost 1,000 spills to Colorado regulators over the past 2 1/2 years, totaling 5.2 million gallons of drilling liquids and oil.

They ranged from small oil leaks from half-closed valves to thousands of barrels of tainted water that escaped from pits.

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