A mass tort is a civil action involving numerous plaintiffs against one or a few corporate defendants. The tort may involve, for example, personal injuries suffered by numerous plaintiffs as a result of a defective product, or a mass disaster in which there were many injured persons, such as an airplane crash, or exposure of a large group of people to toxic chemicals or pharmaceuticals.
West Valley is a former census-designated place (CDP) in Yakima County, Washington, United States. The area has been annexed by the city of Yakima. The population was 10,433 at the 2000 census. Based on per capita income, West Valley ranks 76th of 522 areas in the state of Washington to be ranked.