Intrinsic and Extrinsic Chemical and Isotopic Tracers for Characterization Of Groundwater Systems

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In many regions, three dimensional characterization of the groundwater regime is limited by coarse well spacing or borehole lithologic logs of low quality. However, regulatory requirements for drinking water or site remediation may require collection of extensive chemical and water quality data from existing wells. Similarly, for wells installed in the distant past, lithologic logs may not be available, but the wells can be sampled for chemical and isotopic constituents. In these situations, a thorough analysis of trends in chemical and isotopic constituents can be a key component in characterizing the regional groundwater system. On a basin or subbasin scale, ... continued below

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Moran, J E; Singleton, M J; Carle, S F & Esser, B K September 13, 2007.

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In many regions, three dimensional characterization of the groundwater regime is limited by coarse well spacing or borehole lithologic logs of low quality. However, regulatory requirements for drinking water or site remediation may require collection of extensive chemical and water quality data from existing wells. Similarly, for wells installed in the distant past, lithologic logs may not be available, but the wells can be sampled for chemical and isotopic constituents. In these situations, a thorough analysis of trends in chemical and isotopic constituents can be a key component in characterizing the regional groundwater system. On a basin or subbasin scale, especially in areas of intensive groundwater management where artificial recharge is important, introduction of an extrinsic tracer can provide a robust picture of groundwater flow. Dissolved gases are particularly good tracers since a large volume of water can be tagged, there are no real or perceived health risks associated with the tracer, and a very large dynamic range allows detection of a small amount of tagged water in well discharge. Recent applications of the application of extrinsic tracers, used in concert with intrinsic chemical and isotopic tracers, demonstrate the power of chemical analyses in interpreting regional subsurface flow regimes.

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PDF-file: 6 pages; size: 0.6 Mbytes

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  • Presented at: 3D Geological Mapping for Groundwater Applications, Denver, CO, United States, Oct 28 - Oct 28, 2007

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  • Report No.: UCRL-PROC-234649
  • Grant Number: W-7405-ENG-48
  • Office of Scientific & Technical Information Report Number: 925674
  • Archival Resource Key: ark:/67531/metadc898763

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  • September 13, 2007

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  • Sept. 27, 2016, 1:39 a.m.

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  • Dec. 7, 2016, 3:45 p.m.

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Moran, J E; Singleton, M J; Carle, S F & Esser, B K. Intrinsic and Extrinsic Chemical and Isotopic Tracers for Characterization Of Groundwater Systems, article, September 13, 2007; Livermore, California. (digital.library.unt.edu/ark:/67531/metadc898763/: accessed July 21, 2018), University of North Texas Libraries, Digital Library, digital.library.unt.edu; crediting UNT Libraries Government Documents Department.