The Willamette Research Station (WRS) Analytical Laboratory is part of the Western Ecology Division (WED) of the National Health and Environmental Effects Laboratory in the U.S. EPA's Office of Research and Development. The WRS Laboratory was established in the summer of 1997 to support research projects at WED. The Laboratory provides complete services for all sample preparation and analyses, including sample filtration, preservation, digestions, and extractions. The Laboratory supports projects in both the Regional Ecology and Terrestrial Branch. This Quality Assurance Plan (QAP) for the WRS Analytical Laboratory describes the protocols and procedures used by the Laboratory, and follows the guidelines established in EPA's Quality Management Plan for ERL-C (U.S. EPA, 1995) and Dynamac's Program Quality Management plan (Dynamac Corporation, 2001). Tables 1.1, 1.2, and 1.3 list the methods and detection limits used at the WRS Laboratory for water chemistry, fish tissue, and periphyton analyses, respectively. Specific protocols and methods for each analytical instrument are provided in a separate document, the Standard Operating Procedures (SOPs) for the WRS Analytical Laboratory. Appendix A lists the SOPs available as of March, 2003. Site selection and sampling procedures are described under each project's QA Project Plan.

Cover title. "EPA 841-B-04-008"--Cover. "July 2004, final"--Cover. Publisher information came from cover. Includes a second title page: Quality assurance plan / Willamette Research Station Analytical Laboratory. Revision 1, March 2003 / Marilyn Morrison Erway, Kathy Motter, Karen Baxter. Corvallis, Or. : Dynamac Corporation. Running header: Dynamac/WED/68-D-01-005, WRS Analytical Laboratory quality assurance plan, WRSQAP.rev1, April 1, 2003. Includes bibliographical references (p. 33) and appendix A. Photocopy.

This document contains information on the methods for analysis of water samples to be collected during the WSA project, quality assurance objectives, sample handling, and data reporting.