Tasks were prioritized as high, medium, or low by the management oversight team. A table of task priorities and more detailed description of each task is available in the Grand Canyon Science Plan.
Tasks are grouped by general themes, which follow a chronological order in terms of exploration and mining. The numerical designation of tasks is to improve organization and clarity but does not indicate prioritization of individual tasks.
|Improve Understanding of the Genesis of Ore
|Evaluate the distribution and stratigraphic position of breccia pipes.
|Estimate the number of buried and concealed mineralized breccia pipes.
|Evaluate the role of regional hydrology on breccia pipe mineralization.
|Compare breccia pipe deposits to sandstone deposits
|Characterization of Transport Pathways of Mining Related Contaminants in Water, Soil, Sediment and Biota
|Compile/evaluate existing and newly collected monitoring data from various agencies/sources.
|Collect/analyze water and sediment samples from streams and springs.
|Collect/analyze samples from biota with focus on Federal trust resources.
|Compare water transport mechanisms in mined and un-mined breccia pipes.
|Conduct habitat and species surveys.
|Characterize concentrations of uranium and other trace elements and radiation levels in water, sediment, and soil.
|Characterize concentrations of uranium and other trace elements and radiation levels in biota (including Federal trust resources).
|Collect/analyze soils, including deeper horizons, to characterize vertical distributions of uranium and other trace elements.
|Evaluate and refine the isotopic uranium activity ratio (UAR) analysis in water and ore samples.
|Continue evaluation/analysis of ore geochemistry from historical and active mines.
|Drill and develop groundwater observation wells into the regional aquifer.
|Update the Northern Arizona Regional Groundwater Flow Model (NARGFM) and test generic models to evaluate effect of the down cutting of the Colorado River on regional hydrology.
|Determine Pathways of Exposure
|Characterize the wind dispersion characteristics of uranium and trace elements associated with uranium mining and the subsequent risk to biota.
|Monitor surface waters in Kanab Creek, Havasu Creek, and the Colorado River to determine the mobility and flux of uranium and other trace elements.
|Evaluate scenarios of impact from potential overflowing of wastewater ponds or disturbance of waste rocks from runoff events.
|Determine the fluxes and storage of uranium and other trace elements in Lake Mead sediments.
|Determine Biological Effects of Exposure to Contaminants
|Quantify the risk to native flora and fauna caused by chemical or radiation releases linked to uranium mining.
|Develop chemical effect thresholds for uranium for biota inhabiting mining areas of the Grand Canyon region.
|Develop radiation effect thresholds for uranium for biota inhabiting mining areas of the Grand Canyon region.
|Characterize the risks to biota chronically exposed to uranium such as genetic effects on species populations, density, ecosystem dynamics, and biodiversity.
|Evaluate the biological effects (synergistic, additive, antagonistic) of chemical exposure to uranium plus trace element mixtures.
|Evaluate the risk of radiation exposure for biota that spend prolonged periods of time in the subterranean environment.
|Determine the sensitivity of native wildlife receptors to chemical and radiation exposure encountered in the field.