About the Author

Sherwood C. Reed, P.E., has over 30 years' experience in the research and design of natural systems for waste treatment and other environmental engineering facilities. Principal of Engineering Environmental Consultants, Mr. Reed is the author of several books and more than 100 papers on wastewater and sludge management. Ronald W. Crites, P.E., is Managing Engineer for Brown and Caldwell in Sacramento, California, and an internationally recognized expert on land application of wastes, water reuse, constructed wetlands, and other natural treatment processes. He has 30 years of experience in these fields and is the author of several books and over 110 technical journal articles.