Dissolved Metal Concentrations Entering and Exiting the Apatite II Permeable Reactive Barrier (Outflow E) at Success Mine (Golder Associates)

Entering Barrier Exiting Barrier

(µg/L;ppb) (µg/L;ppb)

Date pH Cd Pb Zn pH Cd Pb Zn

1/20/01 --- --- --- --- 7.0 < 2 5 17

3/23/01 4.5 333 1,230 44,700 --- --- --- ---

8/20/01 4.5 379 1,290 53,700 6.5 < 2 < 5 31

10/27/01 5.0 437 1,110 71,300 6.5 < 2 < 5 45

1/10/02 5.0 779 1,210 116,000 6.5 < 2 < 5 116

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