At least 22 toxic chemicals, including four known human carcinogens, were found in nine separate air samples taken near natural gas drilling operations by community advocacy and environmental groups in Garfield and La Plata counties in Colorado and the San Juan Basin of New Mexico, according to a new report from Global Community Monitor . Entitled “GASSED! Citizen Investigation of Natural Gas Development (pdf),” the report details how the air samples, taken near homes, playgrounds, schools and community centers, were analyzed by a certified lab