A lack of snow in the central mountains has allowed the Colorado Department of Transportation to go easy on Independence Pass avalanche mitigation work, officials said. CDOT crews routinely deploy charges to blast away excessive snow as an avalanche preventative, but on Thursday on Colorado 82 over Independence Pass (altitude 12,095 feet), workers doing the annual mitigation duty needed only 20 charges compared with the 40 they used last year. In past years, as many as 50 charges have been used to detonate excess powder before the precarious road between Leadville and Aspen could open for the season, said CDOT spokesman Bob Wilson. “The mountainsides along the Continental Divide just don’t have that much snow,” Wilson said.