Record Display for the EPA National Library Catalog


Main Title Geothermal Environmental Impact Assessment: An Approach to Groundwater Impacts from Development, Conversion, and Waste Disposal.
Author Hess, J. W. ; Wheatcraft, S. W. ; Edkins, J. E. ; Jacobson, R. L. ; Zimmerman, D. E. ;
CORP Author Nevada Univ. System, Las Vegas. Water Resources Center.;Environmental Monitoring Systems Lab., Las Vegas, NV.
Year Published 1984
Report Number EPA-R-806457; EPA-600/4-84-046;
Stock Number PB84-198639
Additional Subjects Geothermy ; Ground water ; Water pollution ; Environmental impacts ; Transport properties ; Mathematical models ; Injection wells ; Sites ; Leakage ; Chemical analysis ; Computer programs ; Geohydrology ; Solid waste disposal ; Regulations ; Methodology ; Geochemistry ; Water analysis ; Geothermal resources ; Geothermal systems ; Water pollution sampling ; Monitoring
Library Call Number Additional Info Location Last
NTIS  PB84-198639 Some EPA libraries have a fiche copy filed under the call number shown. 07/26/2022
Collation 291p
Groundwater monitoring for the impacts of geothermal energy development, conversion and waste disposal is similar to groundwater monitoring for other purposes except that additional information is needed concerning the geothermal reservoir. The research described here developed a six-step methodology including failure analysis and computer-based contaminant transport and geochemical models to design groundwater monitoring plans. Failure data analyses indicate that production and injection wells have the highest probability of failure and should be the focal points for groundwater monitoring. Groundwater monitoring techniques fall into four categories: (1) monitoring the injection/production well, (2) monitoring in the saturated zone, (3) monitoring in the unsaturated zone, and (4) monitoring on or above the ground surface. Location of the monitoring wells and what to measure in them may be determined with the aid of computer contaminant transport and geochemical models. POLLUTE is a nondispersing contaminant transport groundwater computer model that enables the user to locate a contaminant plume at a given time. Prediction of resultant fluid chemistries from a leaked geothermal fluid may be essential to unambiguous evaluation of geothermal fluid impact at remote groundwater monitoring sites.