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OLS Field Name OLS Field Data
Main Title Constraints and Categories of Vadose Zone Monitoring Devices.
Author Everett, L. G. ; Hoylman, E. W. ; Weilson, L. G. ; McMillion, L. G. ;
CORP Author Environmental Monitoring Systems Lab., Las Vegas, NV.
Year Published 1984
Report Number EPA/600/J-84/285;
Stock Number PB85-196509
Additional Subjects Ground water ; Water pollution ; Constraints ; Monitoring ; Chemical analysis ; Water table ; Statigraphy ; Hydraulic conductivity ; Permeability ; Samplers ; Soil texture ; Climate ; Soil properties ; Vacuum apparatus ; Reliability ; Service life ; Reprints ; Groundwater movement ; Vadose zone ; Frozen soils
Holdings
Library Call Number Additional Info Location Last
Modified
Checkout
Status
NTIS  PB85-196509 Most EPA libraries have a fiche copy filed under the call number shown. Check with individual libraries about paper copy. NTIS 06/21/1988
Collation 10p
Abstract
Traditional monitoring methods using chemical analysis of groundwater samples to detect pollutant migration are being superseded or used in conjunction with innovate approaches. A need to detect pollutants before they reach the water table has drawn interest to vadose (unsaturated) zonemonitoring and brought together hydrogeologists, soil scientists and agricultural engineers who have been working on this subject for years. Recent studies have identified over 50 different types of vadose zone monitoring devices and methods that have optimum utility in varying hydrogeologic settings. In general, measurements made in the vadose zone are trying to define storage, transmission of liquid waste in terms of flux and velocity, and pollutant mobility. Criteria for the selection of alternative vadose zone monitoring methods are important for the development of site-specific systems. These criteria include: type of site; applicability to new, active, and abandoned sites; power requirements; depth limitations; multiple use capability; type of data collection system; reliability and life expectancy.