International Society of Environmental Forensics (ISEF)
Robert Morrison, Editor-in-Chief

Guest Editorial Paper

Guidelines and Resources for Conducting an Environmental Crime Investigation in the United States
By Jennifer A. Suggs, Earl W. Beam, Dorothy E. Biggs, Willis Collins, Jr., Margo R. Dusenbury, Phoebe P. MacLeish, K. Eric Nottingham, and Don J. Smith

Technical Notes

Environmental Impact in Sediments and Seawater due to Discharges of Ba, 226Ra, 228Ra, V, Ni and Pb by Produced Water from the Bacia de Campos Oil Field Offshore Platforms
By Sergio F. Jerez Vegueria, José M. Godoy, and Norbert Miekeley

Contributed Papers

Forensic Applications of Nitrogen and Oxygen Isotopes in Tracing Nitrate Sources in Urban Environments
By S.R. Silva, P.B. Ging, R.W. Lee, J.C. Ebbert, A.J. Tesoriero, and E.L. Inkpen

Speciation and Characterization of Heavy Metal-Contaminated Soils Using Computer-Controlled Scanning Electron Microscopy
By Stephen K. Kennedy, William Walker, and Barbara Forslund

A Technique for Estimating the Age of Regular/Mid-Grade Gasoline Released to the Subsurface Since the Early 1970’s
By Gene W. Schmidt, Dennis D. Brickmann, and Bruce Torkelson

Long Term Monitoring of Hydrocarbon Contamination Using Multi-Level Vapor Phase Piezometers
By: P. Pearce, W. Parker, and P. Van Geel

Uncertainty in Nonpoint Source Pollution Models and Associated Risks
T.M. Sohrabi, A. Shirmohammadi, and H. Montas

Sequential Extraction Versus Comprehensive Characterization of Heavy Metals in Brownfield Soils
Cheryl Dahlin, Connie A. Williamson, W. Keith Collins, and David C. Dahlin