Implementation Document, Cutoff Walls and Cap for Lime and M-1 Settling Basins,Rocky Mountain, Arsenal, Colorado

摘要

The interim response action for the lime settling basins consists of (1)Relocation of the sludge, (2) Construction of a 360 degree subsurface barrier, and (3) Construction of a soil and vegetative cover. A slurry trench barrier and cap will be installed. The IRA for the M-1 basins requires a 360 degree subsurface barrier and in-situ vitrification. The barrier will be sheet piling. Information is included on the following elements of the design requirement: (1) geology and hydrology; (2) contamination; (3) slurry trench cutoff wall for lime basins; (4) sheet pile cutoff wall for M-1 basins; (5) vegetative cover for lime basins; (6) civil-grading, paving, drainage; and (7) water supply and wastewater collection.