Plastic liners cover a landfarming cell near the Tanke Site E project near Nome, Alaska. The liners create a greenhouse effect by trapping heat and moisture to provide ideal conditions for microbial activity that degrades contaminates. Landfarming is a potential solution to meet the needs of the U.S. Army Corps of Engineers – Alaska District’s Formerly Used Defense Sites program across Alaska. The process includes removing contaminated soil from the source location, spreading it across an expansive area one to two feet thick, tilling consistently and then letting nature take control to degrade the pollutants.