Alkali Lake Chemical Waste Dump is a hazardous waste disposal site near the southwest edge of Alkali Lake, a seasonally dry playa in Lake County, Oregon. It is in the Summer Lake watershed.[1] The site has been the focus of Oregon Department of Environmental Quality (DEQ) efforts to remediate a complex mix of toxic chemicals. Problems were initially caused by the dumping of hazardous waste near the lakebed between 1969 and 1971.