The EPA draft report goes on to discuss possible accidents, such as failure of the high earthen dam designed to hold back toxic mine tailings. It says:
“More than 30 kilometers (19 miles) of salmonoid stream would be destroyed and more streams and rivers would have greatly degraded habitat for decades . . . The range of estimated dam failures is wide, reflecting the great uncertainty concerning such failures.”
Spills into streams are another major area of concern. The report says:
“Fish and invertebrates would experience acute exposure to toxic water and chronic exposure to toxic sediment in a stream and potentially extending to Iliamna Lake.”
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