"Barrick Goldstrike Mines, Inc. proposes the expansion of an existing open-pit gold mine near Calin, Nevada. This document is prepared as a technical report to supplement an environmental impact statement (EIS) prepared by the Bureau of Land Management, Elko District, Nevada, and contains detailed analysis of water resources impacts due to the proposed project. The report focuses on water quality impacts related to the proposed Betze Pit, waste rock disposal areas, sulfide ore stockpiles and process facilities"--Page ii.