Locatable mineral reports for South Dakota and Colorado, provided to the U.S. Forest Service in fiscal year 2002

ties. Although the NROK median total recoverable
lead concentration was the smallest among the
three Western study areas compared, concentrations
in several NROK samples were an order of
magnitude larger than the maximum concentrations
measured in the Upper Colorado River and
Great Salt Lake Basins. Dissolved cadmium, dissolved
lead, and total recoverable zinc concentrations
at NROK sites were more variable than in the
other study areas; concentrations ranged over
almost three orders of magnitude between minimum
and maximum values; the range of dissolved
zinc concentrations in the NROK study area
exceeded three orders of magnitude.