Abstract
The thick haze that sometimes over the Grand Canyon and ruins views of this natural wonder will be considerably reduced under an agreement reached between the largest electric power plant nearby and a regional conservation organization. The proposed cleanup has the backing of the Environmental Protection Agency. The Grand Canyon Trust, a conservation group, and the Salt River Project, an Arizona public utility and operator of the huge Navajo Generating Station, have been arguing for years over how much the 2250-MW coal-fired electric plant was contributing to the canyon's haze. Studies by EPA in the late 1980s and by the public utility itself in 1990, however, confirmed that 40 to 60% of the sulfur dioxide in the particulates over the canyon during the worst haze episodes came from the power plant. Grand Canyon Trust president Edward Norton says the agreement sets a new standard for corporate responsibility and public service/7 He also notes this ...
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