Colorado worried about drilling ponds

11:15 AM, Jun 5, 2012   |    comments
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There are currently 22 central ponds in Colorado, and officials say they aren't sure which chemicals are being stored. 

Colorado air pollution enforcement supervisor Scott Pakefield tells the Grand Junction Daily Sentinel smaller pits located at well sites are usually exempt from regulation. 

(Copyright 2012 by The Associated Press. All Rights Reserved.)

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