A drywell located at the Lapwai School District bus barn has received waste from school bus maintenance for years. Results from sampling soil in the drywell show elevated concentrations in the well of chlorinated solvents including tetrachloroethylene at 22.5 milligrams/kilogram (mg/Kg), trichloroethylene at168 mg/Kg, as well as lead at 1,840 mg/Kg. On the same property within approximately 150 feet of the contaminated dry well is one of two public drinking water supply well installed and operated by the Bureau of Indian Affairs (BIA). The BIA wells supply drinking water for approximately 300 people in Lapwai, including the Lapwai Elementary School that is adjacent to the school district bus maintenance facility. The BIA wells were most recently sampled for volatile organic compounds (VOC) and semi-volatile organic compounds (SVOC), including the contaminants found in the drywell, in 2010. As of that time the BIA wells, including the one closest to the contaminated drywell, did not indicate of any contamination that might be associated with the contaminated drywell. EPA is issuing a UAO to the school district requiring a removal action to be conducted.