A large-diameter auger is used to excavate contaminated soil near building 258, located in the main garrison area of Fort Hunter Liggett, Calif., April 2, 2013. The excavation is part of an environmental remediation project at the installation managed by the U.S. Army Corps of Engineers Sacramento District. The excavated soil will be stockpiled outside of the main garrison area, spread by tractor to a thickness of several feet and tilled regularly as part of a cleanup method called ‘landfarming,’ which uses the power of the sun to naturally heat the soil and evaporate contaminants such as gasoline.