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New Groundwater Pollution Model Developed A Dutch researcher has developed mathematical models to calculate the natural degradation capacity of polluted groundwater. As a result, it can now be predicted whether a polluted area will become larger or smaller. Researcher Phil Ham has devised mathematical expressions to determine the size of a polluted groundwater plume and to assess the natural degradation capacity of contaminated sites. His analytical models calculate the reactive transport of dissolved matter in water through porous soil and the characteristics of the mixing processes. Such a scientifically-supported method had not previously been available. If it can be calculated whether a plume will decrease in size or remain stable, invasive and expensive remediation methods can possibly be avoided. Pollutiononline.com, Apr. 26, 2006
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