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Unformatted text preview: Arsenic Arsenic from rocks are rising to ground level and getting into water We havent done anything to solve it because its too expensive Results of Water Quality Sampling Metallic mercury relatively insoluble in rain and stream water Dissolved and total mercury concentrations in streams and ditches similar to natural background concentrations Avoided mercury transport and the subsequent methylation of mercury in the down-gradient reservoir Present Conditions Long-term human and ecological risk assessment continues Cleanup costs are presently in the tens of millions of dollars Litigation continues- present court case involving Peruvian citizens...
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- Spring '08