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t'4 <br />Section No: 8 <br />Page: 5 of 5 <br />Revision No: 2.0 <br />Date: January 15, 1994 <br />8.3.12 Calibration Frequency <br />Inorganics <br />For trace metals analyses calibrations are performed initially for each analytical run. <br />Recalibration or continuing calibration checks are used every ten analyses. For wet <br />chem analyses, a new curve is generated every six months. To verify daily calibration, <br />continuing calibration verifications are used. Exceptions may exist for method specific <br />SOPS. <br />Organics <br />GC and GUMS methods are calibrated initially for all analytes. For each additional <br />day of operation, a calibration check standard is analyzed and evaluated. If the <br />calibration is deemed valid the analysis may be performed. Otherwise, the system is <br />recalibrated. Exceptions may exist for method specific SOPS. <br />E <br />E <br />