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Analytical Quality Assurance <br /> In addition.to routine calibration of the analytical instruments with standards and blanks, <br /> the analyst is required to run duplicates and spikes on 10 percent of the analyses to <br /> insure an added measure of precision and accuracy.Accuracy is also verified through the <br /> following: <br /> 1. U.S. Environmental Protection Agency (EPA) and State certification programs. <br /> 2. Participation on an interlaboratory or "round-robin" quality assurancero ram. <br /> P 9 <br /> 3. Verification of results with an alternative method. For example, calcium may be <br /> determined by atomic absorption, ion chromatography, or titrimetrid methods. Volatile <br /> organics may be determined through either purge and trap or liquid-liquid extraction <br /> methods. j <br /> - Miscellaneous Checks of Accuracy <br /> Where trace analysis is involved, purity of the solvents, reagents and gases employed is <br /> of great concern. The laboratory maintains a service contract on all major instrumentation; <br /> gas chromatograph, atomic absorption, ion chromatography, and total organic carbon <br /> analyzers are all serviced and maintained regularly. <br /> The above program is more than sufficient for most needs. Additional quality assurance <br /> such as spikes and duplicates on all analyses, will be provided if requested. I <br /> i <br /> r . <br /> L <br /> L <br />�I <br /> i <br />