Glenwood Springs— A three-year study of air pollution from Garfield County fracking wells found the highest rate of emissions came just after fracking was completed. The research presented today to the Garfield County Board of Commissioners didn’t measure the effects on human health, but it will help state officials devise such a study later. The exhaustive study looked at methane and ozone-causing compounds released from new fracking wells. Dr.Jeffrey Collett, a professor of atmospheric science at Colorado State University, says the study found the emissions rate was highest when gas began to flow from the well, pushing the water and chemicals back out. The nearly 1.8 million dollar study was funded by Garfield County and drilling companies.