### EML Procedures Manual

Welcome to the on-line version of EML's Procedure Manual. The on-line version differs in presentation but not in content from the printed version. Each section is a file in PDF format.

### HASL-300

## THE PROCEDURES MANUAL OF THE ENVIRONMENTAL MEASUREMENTS LABORATORY

Volume I, 28th Edition
February, 1997

### Mitchell D. Erickson, Director

Nancy A. Chieco, Editor

U.S. Department of Homeland Security
201 Varick St. 5th Floor
New York, NY 10014-4811

This report supersedes: HASL-300, 27th edition issued 1990, revised 1992; 26th edition issued 1983; 25th edition issued 1982; supplement 8 issued 1981; supplement 7 issued 1979; supplement 6 issued 1978; supplement 5 issued 1977; supplement 4 issued 1976; supplement 3 issued 1972 (revised 1975); NYO-4700 issued 1957 (revised 1960, 1962); supplements 1 and 2 issued 1963.

DISCLAIMER

"This report was prepared as an account of work sponsored by an agency of the United States Government. Neither the United States Government nor any agency thereof, nor any of their employees, makes any warrenty, express or implied, or assumes any legal liability or responsibility for the accuracy, completeness, or usefulness of any information, apparatus, product or process disclosed, or represents that its use would not infringe privately owned rights. Reference herein to any specific commercial product, process, or service by trade name, trademark, manufacturer, or otherwise, does not necessarily constitute or imply its endorsement, recommendation, or favoring by the United States Government or any agency thereof. The views and opinions of authors expressed herein do not necessarily state or reflect those of the United States Government or any agency thereof."

## Preface

This 28th edition supersedes all previous versions. The Manual was originally issued in 1957 as a U.S. Atomic Energy Commission Report (NYO-4700). In 1972, substantive changes were made and the designation became HASL-300 (Health and Safety Laboratory). When the Laboratory's name was changed in 1977 to the Environmental Measurements Laboratory (EML), the Manual was retitled to the EML Procedures Manual (supplement 6, issued 1978). In subsequent years, parts of HASL-300 were updated as necessary.

Volume I of this edition covers existing technology and procedures currently in use at EML. Some older procedures have been updated and new procedures have been added. Procedures no longer in use at EML, but still valid and used at other laboratories, appear in Volume II.

The Manual includes contributions from most of the EML scientific staff. We welcome any questions, corrections or information you may have concerning this publication. Points of contact are listed in the text. Additional information is available on EML's web site (www.eml.st.dhs.gov). The special contributions of Sylvia Kendall for desktop publishing support and of Jenny May-Maiello for graphic design are also acknowledged.