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AEGIS ENVIRONMENTAL, INC. <br /> STANDARD OPERATING PROCEDURES <br /> RE: LABORATORY ANALYTICAL QUALITY ASSURANCE AND CONTROL, <br /> SOP-5 <br /> In addition to routine calibration of the analytical instruments with standards and blanks, <br /> ` the laboratory analyst is required to run duplicates and spikes on 10 percent of the <br /> a analyses to insure an added measure of precision and accuracy. Accuracy is also <br /> verified through the following: <br /> M. <br /> 1. U.S. Environmental Protection Agency (EPA) and State certifications <br /> programs; <br /> 2. Participation in an inter-laboratory or "round-robin" quality assurance <br /> s program; <br /> 3. Verification of results with an alternative method. For example, calcium <br /> may be determined by atomic absorption, ion chromatography, or <br /> 1 titrimetric methods: Volatile organic compounds may be determined <br /> through either purge and trap or liquid-liquid extraction methods; and, <br /> 4. Miscellaneous checks of equipment accuracy. Where trace analysis is <br /> involved, purity of the solvents, reagents and gases employed is of great <br /> concern. he laboratory maintains a service contract on all major <br /> instrumentation, including gas chromatograph, atomic absorption, ion <br /> chromatography and total organic carbon analyzers. Each of these <br /> a, instruments are serviced and maintained regularly. <br /> i <br /> sop-5Joct. 1990 <br />