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Spellman's Standard Handbook for Wastewater Operators: Volume II, Intermediate Level, Third Edition, contains the necessary information to successfully prepare for the currently administered certification examinations. Primarily designed to provide a readily accessible, user-friendly source of information for the second levels of wastewater licensure, this volume also sets the stage for Volume III. Upgraded, updated, and expanded to include additional pertinent information, this volume compiles wastewater treatment information, data, operations material, process control procedures, safety and health information, new trends in wastewater treatment administration and technology, and numerous sample problem-solving practice sets.