The Guide to Environmental Analytical Methods was originally developed from a method comparison document called Variability in Protocols (VIP) published by the EPA Risk Reduction Engineering Laboratory in Cincinnati, Ohio. VIP provided a useful tool for understanding similarities and differences among commonly used environmental test methods. This concept was greatly expanded by Northeast Analytical’s staff with the first publication of the Guide to Environmental Analytical Methods in 1992. Now in its fifth edition, and under new editorship, The Guide has become a popular reference tool for all who work in the environmental field. Dr. Roy-Keith Smith retired in June, 2000 from his former position as Quality Assurance Manger and Analytical Methods Manager with a prominent commercial environmental laboratory in the Southeast. His retirement has actually provided more time for him to delve into the intricacies of the environmental industry, unhampered by the day-to-day distractions of the laboratory. Besides writing, Dr. Smith has been busy serving as an expert witness for environmental lawsuits, where his specialty of foundation destruction has been widely appreciated, and for teaching, presenting seminars, and laboratory consultations. He can be reached through Genium Publishing, www.genium.com.