DENVER (AP) — Colorado officials say they're planning for an expected EPA rule next month that could require a 30 percent reduction in carbon-dioxide emissions nationwide by 2030. Colorado Air Pollution Control Division director Will Allison said a number of options are being considered, including improving insulation at existing coal plants, shifting generation to natural-gas combined plants, more renewable energy and conservation. "We believe the work Colorado has done puts us in good condition," Allison said. The rules, which aren't yet final, would reduce carbon dioxide emissions from 2005 levels.Read more on NewsOK.com