[en] The shallow gravel aquifer underneath the Grand Junction, Colorado, Department of Energy facility is contaminated by uranium-mill tailings. According to Colorado water-quality standards, the aquifer is unfit for agricultural use - the lowest-use classification. This report describes 1982 monitoring activities and the location and levels of contamination. The contaminated aquifer's threat to the nearby Gunnison River system is probably negligible, but this cannot be verified without additional testing. Because there were no significant process changes and because no significant air-quality impacts were noted in previous years, no air-quality data were obtained in 1982. The shallow aquifer underneath the Monticello, Utah, property is also contaminated by uranium-mill tailings. The creek flowing through the property is contaminated at levels exceeding Utah water-quality standards for several miles downstream. This report describes a portion of a much larger environmental study currently underway at the site. Levels of water contamination and radon emission probably require mitigation to meet State of Utah and federal regulations