Colorado regulators approved a preliminary plan to allow more than 150 new oil and gas wells east of Aurora on Wednesday, clearing a path for a project opponents fear could contaminate a local drinking water reservoir and further degrade Front Range air quality. The Colorado Energy and Carbon Management Commissions voted 3 to 1 to approve the Lowry Ranch Comprehensive Area Plan, a proposal from Crestone—a subsidiary of Denver-based Civitas Resources—to develop up to 11 drilling sites spread across 32,000 acres in Arapahoe County.  “Without a doubt, it’s the wrong decision for the health, safety and environment of our community,” said Marsha Goldsmith Kamin, the president of Save The Aurora Reservoir, a local advocacy group fighting the project.