The Associated Press
Four in 10 oil and gas wells drilled between fiscal years 2009 and 2012 escaped federal inspection even though they are near national forests, fragile watersheds or otherwise identified as higher pollution risks. Here are the states with wells on federal or Indian lands that were deemed "higher priority" for drilling inspection by the Bureau of Land Management, and the number that were not checked:
Source: Bureau of Land Management and Associated Press analysis
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