Colorado oil and natural gas regulators are heading into their second day of hearings to review proposed new rules.
The Colorado Oil and Gas Conservation Commission is expected to hear from residents on Tuesday on proposals to restrict drilling within 500 feet of homes.
On Monday, the panel approved rules making the state one of the first to require energy companies to do groundwater sampling both before and after they drill.
The sampling is meant to show whether supplies of drinking water have been affected by energy development.
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