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NATIONAL STREAM SURVEY: PHASE 1 QUALITY ASSURANCE REPORT
Citation:
Cougan, K., D. Sutton, D. Peck, V. Miller, AND J. Pollard. NATIONAL STREAM SURVEY: PHASE 1 QUALITY ASSURANCE REPORT. U.S. Environmental Protection Agency, Washington, D.C., EPA/600/4-88/018.
Description:
The National Stream Survey - Phase I, conducted during the spring of 1986, was designed to assess quantitatively the present chemical status of streams in regions of the eastern United States where aquatic resources are potentially at risk as a result of acidic deposition. A quality assurance program was implemented to ensure consistency in the collection and analysis of water samples and to verify the reported results. In addition, the quality assurance program provides data users with quantitative and qualitative documentation of the quality of the data base in terms of representativeness, completeness, and comparability and the quality of the analytical results in terms of detectability, accuracy, and precision. The quality assurance report describes the major design and operational aspects of the quality assurance program and the final assessment of the quality of the analytical problems that occurred during the survey and the corrective actions implemented.