ABSTRACT
Problems are associated with soil or subsurface remediation; available soil remediation technologies, while often very effective, are not the perfect solutions to the problem of soil pollution. The rst problem concerns the fact that soil pollution remediation practices are a still developing branch of environmental science and engineering-lessons are still being learned. Another, more obvious problem has to do with timing and expediency. Soil pollution remediation is the very last procedure in the sequence of combating soil pollution, because action is taken only when we realize the problem exists-after the spill or release of pollutants into the soil. In water and air pollution, we can often limit or prevent pollution damage from occurring at all by collecting the pollutant at the source before it enters the media. In soil pollution, often not only has the damage been done but it’s also years old and presents even more challenges to our ability to remediate the contamination.
