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Stabilization operations, Challus road, upper dam
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Earthwork operations, lower dam spillway
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Consolidation operations, spillway berm, lower dam
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Spillway chute, upper dam
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Stabilization operations, Challus road, lower dam
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Concrete filling operations, spillway chute, upper dam
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Leveling concrete, lower dam spillway
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Completion of lean concrete layer, L3 tunnel
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