I. Introduction -- II. Review of Basic Concepts and Principles in Contaminant Hydrogeology -- III. Data Needs and Quality Control -- IV. Strategies for Design of Capture and Containment Remedial Systems -- V. Design Optimization for Capture and Containment Systems -- VI. Design Considerations for Complex Settings -- VII. Performance Evaluation -- VIII. Examples of Remedial Well Field Design and Optimization -- App. A Decision Analysis With a Risk-Cost-Benefit Objective Function -- App. B Nonlinear Optimization Methods for Groundwater Quality Management Under Uncertainty -- App. C AQMAN and MINOS Data Files and Output -- App. D Water-Quality Standards Under the Safe Drinking Water Act