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a � <br /> 1 4 <br /> CORRECTIVE ACTION <br /> A Quality Control Program must have corrective actions built <br /> into every standard operating procedure. The program is only <br /> as effective as the laboratory's ability to adhere to the <br /> program. If the level of acceptability set by the <br /> methodology is not met, corrective action must be taken <br /> i immediately. in accordance with SW-846 Chapter 1, Revision <br /> 1, December 1987, the following steps are taken to maintain <br /> i -- the integrity of the final data package: <br /> 1. Identification and definition of the problem; <br /> 2. Assignment of responsibility for investigating the <br /> problem; <br /> 3. Investigation and determination of the cause of the <br /> problem; <br /> 4. Determination of a corrective action to eliminate the <br /> problem; , <br /> 5. Assigning and accepting responsibility for implementing <br /> the corrective action; <br /> 6. Implementing the corrective action and evaluating its <br /> effectiveness; and <br /> 7. Verifying that the corrective action has eliminated the <br /> problem. <br /> These steps apply to any and all standard operating <br /> - procedures at Sequoia Analytical (figure 13) . <br /> INTERNAL QUALITY CONTROL CHECKS <br /> Each quarter, Sequoia Analytical receives a series of EPA <br /> reference samples for a variety of organic and inorganic <br /> analyses. The samples are submitted blind to the analyst. <br /> The analytes must be correctly identified and accurately <br /> quantitated. The results of these analyses are kept on file. <br />