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1 <br /> RESNA Indust APZWP#A <br /> nes Inc <br /> Quality Assurance/Quality Control Plan <br /> Revised November 1992 <br /> 7.0 FIELD EQUIPMENT CALIBRATION AND MAINTENANCE <br /> The following measuring equipment may be used during the Remedial Investigation. Equipment <br /> ' is grouped by field activity Calibration procedures and frequency are listed by piece. <br /> Soil Borin s and Well DimensionS <br /> ' Steel and coated cloth tape Calibration: none. <br /> Water Level Measurements in Wells <br /> Steel surveyors tape. Calibration manufacturer supplied temperature correction will be <br /> applied as applicable for Feld conditions. Electrical well sounders. Calibration: check <br /> against steel surveyor's tape. <br /> Organic Vapors <br /> ' Photoionization Detector (PID) Calibration daily field calibration using a isobutylene <br /> standard as per manufacturers instructions <br /> roundwater pH Measurement <br /> IDigital pH meter. Calibration- standard pH solutions of 4, 7, and 10 will be utilized for <br /> daily field calibration according to manufacturers instructions. <br /> Electrical Conductivity <br /> Electrical Conductivity meter Calibration: factory-calibrated annually and periodically <br /> calibrated against laboratory prepared standard calibration solution. <br /> Water.Temperature <br /> Mercury or digital thermometers Calibration- factory calibrated once <br /> QAQCIM FNL <br /> 5 <br />