Characterization of Heterogeneities Controlling Transport and Fate of Pollutants in Unconsolidated Sand and Gravel Aquifers: Second Year Report
Abstract
The purpose of this project is to evaluate promising methodologies for characterization of heterogeneities in hydraulic conductivity. A major thrust of the second year of this project was an assessment of well tests in heterogeneous formations. The theoretical components of this effort included the development of a general slug-test model, a study of the use of slug tests to describe vertical variations in conductivity, an application of the principles of tomography to site characterization, an investigation of sinusoidal pulse tests in simple heterogeneous aquifers, and an examination of the effective parameters obtained from slug tests in wells with skins. The field component o this work emphasized slug tests. A program of multiwell slug tests was initiated at GEMS, which led to the development of a new model for the analysis of multiwell slug-test data. Additional field testing led to the development of new nonlinear slug-test models based on frictional losses, nonDarcian flow, and inertial effects. Additional field work included an aqueous geochemistry study; drilling and sampling activities; modification of the bladder sampler, laboratory analyses of cores; a wireline log survey; and a seismic survey. Overall, the research of year two produced results of considerable practical significance. Heterogeneities, Alluvial aquifers, Slug tests, Site characterization, Pollutant transport, Pulse testing
Document Details
- Document Type
- Technical Report
- Publication Date
- Jun 30, 1993
- Accession Number
- ADA267473
Entities
People
- C. D. Mcelwee
- J. J. Butler Jr