Evolution and adequacy of ground water monitoring networks at hazardous waste disposal facilities in Illinois

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Authors:Herzog, B. L.; Hensel, B. R.; Mehnert, E.; Miller, J. R.; Johnson, T. M.
Author Affiliations:Primary:
Ill. State Geol. Surv., Champaign, IL, United States
Levine-Fricke Consult. Eng. & Hydrolog., Oakland, CA, United States
Corporate Authors:National Water Well Association, Dublin, OH
Volume Title:Proceedings of the Sixth national symposium and exposition on aquifer restoration and ground water monitoring
Volume Authors:Cook, Peter L., prefacer
Source:Proceedings of the National Symposium on Aquifer Restoration and Ground-Water Monitoring, Vol.6, p.98-119; Aquifer restoration and ground water monitoring, Columbus, OH, May 19-22, 1986, prefaced by Peter L. Cook; National Water Well Association, Dublin, OH. Publisher: National Water Well Association, Worthington, OH, United States. ISSN: 0749-9515
Publication Date:1986
Note:In English; illus. incl. geol. sketch maps
Summary:A study was recently conducted of ten hazardous-waste facilities in Illinois to determine the evolution and current adequacy of their monitoring networks. The facilities included landfills, surface impoundments, land application sites, and underground tank storage facilities. The study disclosed that the original design for the monitoring network at each of the ten sites was inadequate. In one case, a large landfill, the network consisted of only three monitoring wells, all of which later proved to be upgradient of the facility and, in addition, were finished in shallow sand lenses that were typically dry. Over the years, monitoring networks at each facility have improved to the point where most monitoring wells now appear to be located in the correct geologic units corresponding to the most probable flow path for contaminants. Several monitoring wells from earlier network designs have had to be replaced at some sites due to improper location or well construction techniques. Although the monitoring systems at these sites have all been refined within the past three years, only one of the facilities used geophysical techniques, and only two used computer models to aid in the design of their groundwater monitoring networks. Several recommendations have resulted from this study: (1) thorough hydrogeologic studies are necessary before an adequate monitoring program can be established, (2) the design of a monitoring network should not be determined a priori, rather it should reflect information gathered in hydrogelogic studies as well as any changes that may occur during the life of the facility, (3) regulations for the design of groundwater monitoring programs should allow for each site to be considered individually, and (4) additional techniques, such as groundwater modeling and geophysical methods, should be used where possible to assist in network design. (See also W88-09283) (Author 's abstract)
Subjects:Bedrock; Carbonates; Detection; Dolomite; Engineering geology; Environmental geology; Experimental studies; Ground water; Hydrogeology; Landfills; Monitoring; Pollution; Surveys; Waste disposal; Illinois; United States; Sands
Record ID:1988039478
Copyright Information:GeoRef, Copyright 2018 American Geosciences Institute. Reference includes data from USGS product, Selected Water Resources Abstracts, Reston, VA, United States
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