Dissolved (0.45-micrometer filter) uranium concentration measured in water from seven wells completed in the colluvial aquifer ranged from 0.078 parts per million (ppm) at well FC1 (the upgradient background well) to 3.8 ppm at well FC3, located on the upgrader tailings. Monitoring of uranium concentration during a 1-hour pumping cycle of well FC3 indicated no substantial decrease in uranium concentration with time.
Uranium concentration in samples collected from the colluvial
aquifer, Fry Canyon, Utah, in parts per million.