federal agency called the Environmental Protection Agency, our efforts were concentrated on primarily chasing pollutant residues in the environment. Preface When I first entered the field of environmental monitoring 33 years ago as a new employee of a then very new U.S. Government works International Standard Book Number 1-56670-641-6 Library of Congress Card Number 2003065879 Printed in the United States of America 1 2 3 4 5 6 7 8 9 0 Printed on acid-free paper Visit the CRC Press Web site at © 2004 by CRC Press LLC Lewis Publishers is an imprint of CRC Press LLC No claim to original U.S. Trademark Notice: Product or corporate names may be trademarks or registered trademarks, and are used only for identification and explanation, without intent to infringe. Corporate Blvd., Boca Raton, Florida 33431. Direct all inquiries to CRC Press LLC, 2000 N.W. Specific permission must be obtained in writing from CRC Press LLC for such copying. The consent of CRC Press LLC does not extend to copying for general distribution, for promotion, for creating new works, or for resale.

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