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Michael H. Gerardi holds an MS in biology from James Madison University and has authored more than ninety technical publications. He is responsible for the development and presentation of wastewater biology courses at The Pennsylvania State University and is an operational specialist with Cromaglass Corporation. Mr. Gerardi also is a wastewater biologist for Water Pollution Biology, where he provides troubleshooting of wastewater treatment plants and operator training. He can be reached at www.wastewaterbiology.com.