Delleur edited the book published in 1999. He said in his Preface that a substantial amount of new knowledge in the field of groundwater engineering has been accumulated over the last decade. In particular, many new developments have taken place in the analysis of contaminant transport both in the saturated and in the unsaturated zones. New techniques for the remediation of contaminated groundwater have been implemented. New approaches in computer modeling of the flow and movement of contaminants have appeared. The problem of modeling the general heterogeneity of many geological formations and their effects on flow and transport continues to be a challenge and has been the object of many papers. This information is dispersed in many professional and scientific journals, textbooks, and reports.
This new Handbook of Groundwater Engineering synthesizes many of these facts and to provide this information in an easily accessible form. It contains a blend of professional practice and scientific information. The typical readers of the handbook are expected to be geohydrologists and engineers possessing Bachelors or a Masters degrees in applied sciences or in engineering, possibly with some years of experience.
The first two chapters provide an introduction to the geological setting and the analysis of simple groundwater flow and contaminant transport problems. Chapters 8 and 9 are concerned with the production of groundwater and hydraulics of wells. The last six chapters (22 to 27) provide practical information on the solution of engineering problems concerned with pollution remediation, landfills, and the associated legal and regulatory aspects.
The remaining 18 chapters deal with the analytical tools for the description and modeling of flow and transport phenomena in the saturated and in the unsaturated zones. Special attention is given to the effects of heterogeneity and the need to use probabilistic methods to account for the variability of the parameters.
I am grateful to have an excellent group of authors who are leaders in their respective specialties. Their names and affiliations appear in the headings of the individual chapters. The chapters were reviewed in a manner similar to papers in scientific and professional journals.
I am also very grateful to the reviewers. They made a special effort to ascertain that the information presented is sound. Some reviewers read two chapters.