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Figure 7. Trace-element concentrations in stream flow before and during a storm on June 21 and 22, 2001.

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Hydrograph showing stream flow response to a rainstorm that produced 3 cm of precipitation.


Concentrations of boron and cadmium preceding and during the period of storm flow.


Concentrations of copper and nickel preceding and during the period of storm flow.


Concentrations of lead and arsenic preceding and during the period of storm flow.

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