DENVER (AP) — Hundreds of people will tell the Environmental Protection Agency what they think of proposed rules to cut pollution from power plants during public hearings Tuesday and Wednesday in Denver. With just five minutes each to make their case to the EPA, opponents and supporters also are staging rallies around the city. Besides Denver, the EPA is holding hearings this week in Atlanta, Pittsburgh and Washington on President Barack Obama's plan to cut carbon dioxide emissions by 30 percent by 2030, with 2005 levels as the starting point. The Denver hearings are the only ones in the West, where the topic of air pollution traditionally sets off a loud debate over environmental values and economic vitality. Coal mines, electric utilities, labor unions, environmental groups, renewable energy companies, government agencies and religious and civil rights organizations are sending representatives to the Denver hearings.