Abstract
AbstractGround water quality investigations require reliable chemical analyses of water samples. Unfortunately, laboratory analytical results are often unreliable. The Uranium Mill Tailings Remedial Action (UMTRA) Project's solution to this problem was to establish a two‐phase quality assurance program for the analysis of water samples. In the first phase, eight laboratories analyzed three solutions of known composition. The analytical accuracy of each laboratory was ranked and three laboratories were awarded contracts. The second phase consists of on‐going monitoring of the reliability of the selected laboratories.The following conclusions are based on two years of experience with the UMTRA Project's Quality Assurance Program:• The reliability of laboratory analyses should not be taken for granted.• Analytical reliability may be independent of the prices charged by laboratories.• Quality assurance programs benefit both the customer and the laboratory.
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