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�y' p <br /> Smith Technology corporation <br />!. Quality Assutwwt)Quality Control Plan <br /> Revised February 1995 I <br /> Orffanlic Vapors ' <br /> I <br /> Photoionization Detector (PID). Calibration: daily field calibration using a isobutylene <br /> standard as per manufacturers instructions. <br /> Groundwater yH Measurement ' <br /> j DigitalpH meter. Calibration: standard pH solutions of 4, 7, and 10 will be utilized for daily ' <br /> field calibration according to manufacturers instructions. <br /> i� <br /> EIectrical Conductivity <br /> Electrical Conductivity meter. Calibration:. factory-calibrated annually and periodically i <br /> calibrated against laboratory prepared standard calibration solution. ' <br /> Water:[Temneratu <br /> Mercury or digital thermometers. Calibration: factory calibrated once. <br /> Combustible Gas/Oxyzen <br /> Combustible gas/oxygen meter. Calibration: factory calibrated, field calibrated monthly, zeroed <br /> daily according to manufacturers instructions. <br /> Miscellaneous Measuring Devices <br /> Calibration procedures for any other measuring device used will be documented at the request <br /> Of the regulatory authority. <br /> F I , <br /> W AAdminlSheUslQAQC-9'7.DOC <br /> 6 s !I <br /> 4 <br />