Foreword

This field manual is intended to serve as a field reference guide for the collection of water quality samples from surface water and ground water. More detailed information can be found in reference materials from the Arizona Department of Environmental Quality and other sources. Separate training should be provided prior to field water quality sampling.

The overriding objective of this manual is to provide consistent field sampling protocols for the numerous agencies and individuals who require water quality information. However, it is not intended to replace any sampling plan. The Spanish-language version of this manual also is available to help address emerging environmental sampling concerns along the U.S.-Mexican border. Increased water quality management along the border will require integrated sampling and analysis protocols, something that the production of this manual can foster.

Although this manual describes state-of-the-science techniques, sampling methodologies and technologies continue to undergo changes. The intent of this manual is not to restrict sampling techniques, but to provide a common protocol that can be compared to other techniques. In this manner, those who wish to use alternate methods or equipment may do so as long as these variations, when they occur, are documented in the field log book and final sampling report.

Acknowledgements

The preparation of this document was made possible by the Water Quality Division, Arizona Department of Environmental Quality (ADEQ), 3033 N. Central Avenue, Phoenix, AZ 85012, and the U.S. Environmental Protection Agency (EPA). The document was written by Doug Heath with technical and logistical support provided by Gary Woodard, Todd Rasmussen, Susanna Eden, Rodrigo Gonzùlez of the Instituto TecnolSgico de Sonora (ITSON), and scientists from the Universidad de Sonora (UNISON). Alison Simcox reviewed early drafts. Additional technical support was provided by Mario Castaèeda, Melinda Longsworth, James DuBois, Wayne Hood III, ADEQ, Dean Radtke of USGS and Roseanne Sakamoto of EPA Region 9. Translation to Spanish was provided by Vicky Freedman and reviewed by Herlinda Grajeda.

The use of any trade names or materials in this manual does not constitute an endorsement by the Water Resources Research Center.

Every effort was made to assure that the information provided in this handbook is complete and accurate. However, water quality sampling procedures vary among agencies and are updated regularly. Consult your agency's protocols if you have questions.