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Quality Assurance/Quality Control Plan Page S <br /> C <br /> • Soil Borinas and Well Dim ins - <br /> Steel and coated cloth tape Calibration none <br /> • Water Uvel Measurements in Wells - i <br /> Steel surveyors tape Calibration- manufacturer supplied temperature correction <br /> will be applied as applicable for field conditions Electrical well sounders. <br /> Calibration check against steel surveyor's tape. <br /> • Organic Vapors - <br /> Photononnzatton detector Calibration Daly logged field calibration using a <br /> isobutylene standard as per manufacturers instructions <br /> I • Groundwater pH Measurement - <br /> Digital pH meter. Calibration standard pH solutions of 4,7, and 10 will be <br /> utilized for daily logged field calibration according to manufacturers instructions <br /> 6 i <br /> • Electrical_Qgnductivity - <br /> Electrical conductivity meter Calibration. factory-calibrated annually and <br /> periodically calibrated against laboratory prepared standard calibration solution. <br /> ` • Water Temp=ture - <br /> F <br /> E <br /> Mercury or digital thermometers Calibration one-time factory-calibrated <br /> • CombiLtible Gas/Oxygen - <br /> Combustible gas/oxygen meter calibration Factory calibrated, field calibrated <br /> monthly, zeroed daily according to manufacturers instructions <br /> • Other Figld Instumentat on or Equipment - <br /> Calibration procedures for any other instumentation or equipment used will be <br /> k documented at the request of the client or regulatory authority <br /> All equipment will be checked daily and replaced as necessary. Instrument manuals and an <br /> k <br /> r <br /> instrument log book will accompany equipment into the field Any calibration, repairs or related <br /> information will be recorded in the log book <br /> 0 <br />