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Acknowledgments
We gratefully acknowledge M. Elsner, Dr. T. Hofstetter, Prof.
R. Schwarzenbach, and L. Zwank for critically reviewing the
manuscript. This work was part of the European Union
project “Protection of Groundwater Resources at Industrially
Contaminated Sites (PURE)” and was supported by the Swiss
Federal Office for Education and Science (grant no. BBW
99.0396).
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Received for review August 30, 2002. Revised manuscript
received April 4, 2003. Accepted April 4, 2003.
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