APPROPRIATIONS AUTHORIZED.

SEC. 704. APPROPRIATIONS AUTHORIZED.There is hereby authorized to be appropriated beginning October 1, 1989, for construction of a water treatment plant for water flowing from the Leadville Mine Drainage Tunnel, including sludge disposal, and concrete lining the rehabilitated portion of the tunnel, the sum of $10,700,000 (October 1988 price levels), plus or minus such amounts, if any, as may be required by reason of ordinary fluctuations in construction costs as indicated by engineering cost indexes applicable to the types of construction involved herein and, in addition thereto, such sums as may be required for operation and maintenance of the works authorized by this title, including but not limited to $1,250,000 which shall be for a program to be conducted by the Colorado Division of Wildlife to monitor heavy metal concentrations in water, stream sediment, and aquatic life in the Arkansas River.