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Title: Optimization of site characterization and remediation methods using 3-D geoscience modeling and visualization techniques

Three-dimensional (3-D) geoscience volume modeling can be used to improve the efficiency of the environmental investigation and remediation process. At several unsaturated zone spill sites at two Superfund (CERCLA) sites (Military Installations) in California, all aspects of subsurface contamination have been characterized using an integrated computerized approach. With the aide of software such as LYNX GMS{trademark}, Wavefront`s Data Visualizer{trademark} and Gstools (public domain), the authors have created a central platform from which to map a contaminant plume, visualize the same plume three-dimensionally, and calculate volumes of contaminated soil or groundwater above important health risk thresholds. The developed methodology allows rapid data inspection for decisions such that the characterization process and remedial action design are optimized. By using the 3-D geoscience modeling and visualization techniques, the technical staff are able to evaluate the completeness and spatial variability of the data and conduct 3-D geostatistical predictions of contaminant and lithologic distributions. The geometry of each plume is estimated using 3-D variography on raw analyte values and indicator thresholds for the kriged model. Three-dimensional lithologic interpretation is based on either {open_quote}linked{close_quote} parallel cross sections or on kriged grid estimations derived from borehole data coded with permeability indicator thresholds. Investigative borings, as well asmore » soil vapor extraction/injection wells, are sighted and excavation costs are estimated using these results. The principal advantages of the technique are the efficiency and rapidity with which meaningful results are obtained and the enhanced visualization capability which is a desirable medium to communicate with both the technical staff as well as nontechnical audiences.« less
Authors:
;  [1] ;  [2]
  1. Jacobs Engineering Group Inc., Martinez, CA (United States)
  2. Jacobs Engineering Group Inc., Sacramento, CA (United States)
Publication Date:
OSTI Identifier:
474026
Report Number(s):
CONF-960804--Vol.2
TRN: 97:002181-0027
Resource Type:
Conference
Resource Relation:
Conference: SPECTRUM `96: international conference on nuclear and hazardous waste management, Seattle, WA (United States), 18-23 Aug 1996; Other Information: PBD: 1996; Related Information: Is Part Of Proceedings of the international topical meeting on nuclear and hazardous waste management (SPECTRM `96): Volume 2; PB: 875 p.
Publisher:
American Nuclear Society, Inc., La Grange Park, IL (United States)
Country of Publication:
United States
Language:
English
Subject:
54 ENVIRONMENTAL SCIENCES; HYDROCARBONS; HAZARDOUS MATERIALS SPILLS; NONAQUEOUS SOLVENTS; REMEDIAL ACTION; TOPOLOGICAL MAPPING; SITE CHARACTERIZATION; MILITARY FACILITIES; FLOW VISUALIZATION