parties. The National Park Service manages Lake Roosevelt National Recreation Area. The NPS maintains visitor centers, boat-in campsites, shoreline camping, and conducts marine patrols for compliance with United States Coast Guard marine safety rules. The Bureau of Reclamation has two management zones. One is directly behind the dam. It follows the log boom line from the west bank of the river to about mid-channel. Then at the Grant and Okanogan county line (in the middle of the lake) the boundary goes uplake for a short distance until it cuts across to the east shoreline. The other zone is located on the east side of the lake at China Bar, . Reclamation operates a log collection facility. Reclamation captures logs and other large debris before it enters Lake Roosevelt. Bureau of Indian Affairs indirectly manages parts of the lake that are along the Colville Indian Reservation and Spokane Reservation. Although some Washington Department of Natural Resources lands abut against Lake Roosevelt National Recreation Area, the state's Discover Pass does not cover use of NPS boat launches or tribal lands and waters. Pollution litigation The lake is downstream from the Canadian province of British Columbia's Trail Smelter, and has been the subject of litigation over environmental concerns. Cominco's smelter deposited slag from its plant into the Columbia River, which then flowed into Lake Roosevelt. Environmental concerns were raised when these deposits were found to include mercury, lead and zinc. This discovery led the nearby indigenous group, the Colville Confederated Tribes, to take action against Cominco and hold them responsible for degrading the water quality of the lake. The pollution raised health concerns for tribe members, who used the beaches and campsites along the river and ate fish from the river "for subsistence, cultural and spiritual reasons". The lawsuit, launched in 2004, was unique in that it demanded Cominco comply with a U.S. Environmental Protection Agency (EPA) order to provide funding for pollution studies of the Trail operation. In a media statement released in 2003, Cominco agreed to invest $13-million for studies of the health and ecology of Lake Roosevelt, as well as fund the cleanup required to rid the lake of metal contamination associated with the company's smelting practices; although the company's agreement to fund the studies was well-intentioned, the Colville Confederated Tribes countered that Cominco's offer was inadequate because it "did not meet the quality of studies and cleanup guarantees that