Extensively updated, this third edition provides a valuable guide to the tools and techniques used to perform Phase 1 site assessment. This book elucidates the systematic processes and methods used by leaders in the industry. It also emphasizes the development of an easy-to-follow investigative strategy for in-house assessment. After reviewing the history of the field, legal issues, and important terms, the book discusses physical setting, historic usage, property and area reconnaissance, building materials, and industrial activities associated with a property. It also gives interviewing tips, lists regulatory agencies, and considers unique situations such as wetlands and historical buildings.