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Published online 7 November 2005
Published in J Environ Qual 34:2278-2292 (2005)
DOI: 10.2134/jeq2005.0109
© 2005 American Society of Agronomy, Crop Science Society of America, and Soil Science Society of America
677 S. Segoe Rd., Madison, WI 53711 USA
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Transport and Fate of Nitrate and Pesticides

Hydrogeology and Riparian Zone Processes

Larry J. Pucketta,* and W. Brian Hughesb

a U.S. Geological Survey, 413 National Center, Reston, VA 20192
b U.S. Geological Survey, 3039 Amwiler Road, Norcross, GA 30360



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  		Fig. 1. Location map and aerial photograph (recorded 22 Feb. 1995) of the study site showing locations of important landscape features and the study transect A–A'. The study transect is shown in cross-section view in Fig. 2.

 


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  		Fig. 2. Hydrogeologic units and sample well locations along the study transect A–A' in Fig. 1.

 


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  		Fig. 3. Water-table elevations, ground-water flow directions, and approximate year of ground-water recharge in the surficial aquifer, November 1997.

 


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  		Fig. 4. Concentrations of selected (a) pesticides and reconstructed nitrate and (b) pesticide degradates in ground water sampled during November 1997.

 


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  		Fig. 5. Piper diagram of ground- and surface-water chemistry, October 1995 through September 1998.

 




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Copyright © 2005 by the American Society of Agronomy, Crop Science Society of America, and Soil Science Society of America.