Liquid flow from disposal sites can be prevented by drying the site much below the minimal dryness attained by drainage into wells and drains. Evaporation in any site can achieve the degree of dryness necessary for Class I and II landfill flow rates. Liquids will evaporate into air drawn through the site. The air flow would also supply oxygen and increase waste degradation rates. The extracted air can be scrubbed inexpensively, effectively, and safely by soil beds.