Choosing an appropriate soil-gas survey method |
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Authors: | Nic Korte Sandra Wagner Jon Nyquist |
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Institution: | (1) Environmental Sciences Division, Oak Ridge National Laboratory, 81502 Grand Junction, CO, USA;(2) Environmental Restoration Program Technical Support Office, Los Alamos National Laboratory, 87544 Los Alamos, NM, USA;(3) Health and Safety Research Division, Oak Ridge National Laboratory, 37831-6383 Oak Ridge, TN, USA |
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Abstract: | Three types of soil-gas surveys were performed over the same location at an industrial facility. The surveys performed were (1) a passive technique using buried collectors, (2) an active technique in which samples were collected in the field by pumping with subsequent analysis at a field laboratory, and (3) a screening technique that employed a hand-held survey instrument. Each of the surveys had desirable features, but there was considerable variability in the quality of data obtained, cost, and ease of performance. The passive and active surveys provided excellent detection limits, but the passive technique does not provide data in real time. The active survey was also time-consuming and required an analytical chemist in the field. Neither the active nor the passive survey were able to delineate the plume of contaminated groundwater. Consequently, the results from the rapid and inexpensive reconnaissance technique provided functionally equivalent data.Publication No. 3672, Environmental Sciences Division, ORNL.Operated by Martin Marietta Energy Systems, Inc. for the U.S. Department of Energy under Contract No. DE-AC05-840R21400. |
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