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Unformatted text preview: Arsenic • Arsenic from rocks are rising to ground level and getting into water • We haven’t done anything to solve it because it’s 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
- stream, Rain, mercury o Weekly, mercury concentrations Arsenic