This publication includes peer-reviewed manuscripts from the 2009 International Network of Environmental Forensics (INEF) held in Calgary, Canada on August 31 through September 1, 2009. INEF is an organization founded by environmental forensic scientists for the express purpose of sharing and disseminating environmental forensic information to the international scientific community. Environmental forensic information presented at the Calgary conference included topics on contaminant age dating, chemical biomarkers, environmental statistics, the interpretation of forensic data, emerging analytical techniques used in forensic investigations, legal sampling and strategies, petroleum hydrocarbon fingerprinting and diagnostic markers used to age date chlorinated solvents. All of these topics were presented in the context of using these techniques to ultimately identify the origin and age of contaminants released into the environment. This professionally edited book is the first of a series of conference publications chronicling the current state of the art in environmental forensics. The intent of this publication and subsequent INEF conference volumes is to compile a library of state of the art scientific articles dealing with environmental forensic topics.

Robert Morrison has a B.S. in Geology, a M.S. in Environmental Studies, a M.S. in Environmental Engineering and a Ph.D. in Soil Physics from the University of Wisconsin at Madison. He has worked for 38 years as an environmental consultant on projects related to soil and groundwater contamination, including site investigations and remediation. His current specialization is in the forensic review and interpretation of scientific data for the purpose of identifying the source and age of a contaminant release. Gwen O'Sullivan is currently an environmental chemist with Trium Environmental Solutions Inc. (TRIUM). In this role she is responsible for project management, business development, litigation support, and independent scientific investigation. She has B.Sc. in Environmental Sciences from University of Limerick in 1999, and a Ph.D from the Environmental Engineering Research Center within the department of Engineering at Queen's University of Belfast in 2004. She has worked on numerous projects and designed and managed environmental forensics investigations involving compounds of major concern.

Petroleum Hydrocarbons (refined products and crude oil); Chlorinated Solvents; PCBs and Dioxins; Atmospheric Contaminants; Heavy Metals and Major Cation/Anions; Microbiological Forensics Modelling of Environmental Contaminants Environmental Forensic Statistics Legal Implications of Environmental Forensic Investigations Emerging Forensic Methdologies