This handbook aims to discuss, in one vol Notwithstanding the effort that was made to ensure that each chapter is as correct as ume, a wide array of topics that have entered practicable, there is little doubt that some er the mainstream of geopractice (i. e. geotech nical and geoenvironmental engineering) rors (typographical or otherwise) will creep over the past two decades, while at the same into a document of this size, especially in its time not losing sight of the more conven first printing. Readers are requested to advise tional aspects of the discipline that remain a the undersigned of any errors (typographical core part of the work of geoprofessionals. or otherwise) or significant omissions they These topics range from conventional satu identifY-to the extent possible they will be rated soil mechanics, to unsaturated soil be corrected in subsequent printings. havior, rock mechanics, hydrogeology and I am indebted to the numerous contribu geosynthetics. The book deals with pave tors to this book who have labored, in their ments, shallow and deep foundations, em "spare time" to produce a manuscript, re bankments, slopes, retaining walls, buried spond to editorial and reviewer comments, and helped provide what I hope will be useful structures, dynamics and earthquakes, risk assessment and management, contaminant contributions to the profession. transport, groundwater monitoring, and con Finally, lowe a deep debt of gratitude to tainment, treatment and remediation of con my family (Kathy, Katrina, Kieron and Ken taminated sites.