Environmental Impact Statement Lisbon Valley Copper ...
The liner system would consist of, in ascending order, of (a) one-foot of compacted in-place low permeability soil, (b) wick drain and geofabric for leak detection purposes, (c) .one-foot of clay material that is compacted to obtain a permeability of 1 x 10~7 cm/sec, (d) 80-mil thick high density polyethylene (HDPE) synthetic liner, and (e) a ...
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