This report identified and evaluated several potentially hazardous waste disposal sites at K I Sawyer AFB. Records of past waste handling and disposal practices were reviewed. Interviews with past and present installation employees were conducted to develop a history of waste disposal practices. The environmental setting was evaluated including soils, geology, ground water, surface water. The POL area, two fire protection training areas, four landfills, one hardfill, one drainage pond, two drainage pits, the DPDO, and the Wells Terminal Annex were found to have sufficient potential to create environmental contamination and follow-on investigations Phase II were recommended and outlined.