To control dust, landfills are required to continuously spray dirt roads. But we know very little about how much dust landfills contribute to the environment. Only one landfill, Camino Real in Sunland Park, has a dust monitoring system in place. It was a requirement of the state when the landfill was last re-permitted, after residents raised concerns about dust. A study prepared by Dr. Cynthia Lopez, an epidemiologist from UNM, shows a link between living close to the landfill and health problems such as headache and respiratory ailments. Landfill operators say the study is flawed. Data from two years of dust monitoring at the landfill has still not been analyzed. As you might suspect, landfill operators say it suggests the landfill does not contribute dust and toxins to the environment, while Lopez believes it does. Health officials are urging that more studies be conducted on the health problems of residents in Sunland Park.