Machine generated contents note: 1 Introduction -- 1.1 Hydrogeologic Concepts -- 1.2 Aquifer Materials -- 1.3 Groundwater Movement -- 1.4 Recharge and Discharge -- 1.5 Source of Water to a Well -- 1.6 Locating Groundwater -- 1.7 Groundwater Key Facts -- References -- 2 Responsibilities of Hydrogeologists -- 2.1 Rules for Professional Conduct -- 2.2 Field Notebook -- Reference -- 3 Planning a Field Investigation -- 3.1 Project Planning -- Project Definition -- Sound Planning -- Types of Projects -- Project Proposal -- Summary of Project Planning -- 3.2 Project Management -- Technical Progress -- Progress Evaluation and Troubleshooting -- Project Completion -- Checklist for Client Correspondence -- Summary of Project Management -- 3.3 Types of Investigations -- Actions taken in the 1980s -- Actions recommended in 2002 -- 3.4 Objectives of Investigations -- 3.5 Sources of Hydrologic Data -- 3.6 Hydrologic Web Sites -- 3.7 Geographic Information Systems -- References -- 4 Field Investigations -- 4.1 Conceptual Model -- 4.2 Preliminary Site Reconnaissance -- Suggestions for Planning a Field Investigation -- Site Visit -- Springs Investigation -- Hazardous Waste Site Investigation -- 4.3 Geophysical Survey Methods -- References -- 5 Subsurface Investigations -- 5.1 Geologic Mapping -- 5.2 Well Inventory -- 5.3 Monitor Wells -- 5.4 Test Drilling and Examination of Drill Cuttings -- 5.5 Water-Quality Sampling and Field Measurements -- 5.6 Water Level Measurements -- Wetted Steel Tape -- Electrical Tape -- Pressure Transducer -- 5.7 Tracing Techniques -- Natural Tracers -- Stable Isotopes -- Radioactive Isotopes -- Artificial Tracers -- Salts -- Organic Dyes -- Field Methods -- Isotopes -- Organic Dyes -- References -- 6 Aquifer Evaluation -- 6.1 Determination of Hydraulic Conductivity (K) -- Grain Size -- Laboratory Measurements -- 6.2 Design of Aquifer Tests -- 6.3 Types of Tests -- Specific Capacity Test -- Step-Drawdown Test -- Slug Test -- 6.4 Analysis of Aquifer Test Data -- Theis Equation -- Cooper-Jacob Straight Line Method -- 6.5 A Computer Program to Design an Aquifer Test -- 6.6 Construction of Hydrogeologic Maps -- References -- 7 Stream Flow Measurements -- 7.1 Basic Equipment -- 7.2 Measurement Procedure -- 7.3 Methods To Determine Stream-Aquifer Relations -- References -- 8 Hydrogeologic Reports -- 8.1 Report Planning -- Report Work Plan -- Report Writing Guides -- General Report Outline -- Report Organization -- 8.2 Report Writing -- Overcoming Writer's Block -- Title -- Executive Summary or Abstract -- Introduction -- Purpose and Scope -- Study Area Description -- Methods of Study -- Approach -- Previous Studies -- Body of Report -- Summary, Conclusions, and/or Recommendations -- 8.3 Report Review -- Peer Reviewers -- Review Methods -- Editorial Review -- Text -- Illustrations -- Maps -- Cross-sections -- Tables -- Peer/Technical Review -- References -- 9 Case Studies -- 9.1 Central Valley, California -- 9.2 Chicago, Illinois -- 9.3 Las Vegas Valley, Nevada -- 9.4 Tucson and Phoenix, Arizona -- References -- Further Reading -- Glossary -- Appendix: "The Ideal Project -- - Its Planning and Supervision" -- Introduction -- Characteristics of the Ideal Project -- Project Planning -- Project Supervision.