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Quality Assurance/Quality Control Plan <br /> Page 5 <br /> • it B rin s nd Well Dimensions - <br /> Steel and coated cloth tape Calibration none <br /> • Water Level Mea urements in We11 - <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 Vapory - <br /> Photorontzation detector Calibration Daily logged field calibration using a <br /> isobutylene standard as per manufacturers instructions <br /> • Gr undwater p1l Measurement - <br /> Digrtal 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 /> • Electrical Conducts - <br /> Electrical conductivity meter Calibration factory-calibrated annually and <br /> periodically calibrated against laboratory prepared standard calibration solution <br /> P Writer Temperature - <br /> Mercury or digital thermometers Calibration ane-time factory-calibrated <br /> • Combustible Gas/Oxygen - <br /> Combusttble gas/oxygen meter calibration Factory calibrated, field calibrated <br /> monthly, zeroed daily according to manufacturers instructions <br /> • Mier Field Instumentatlon or <br /> Equipment - <br /> Calibration procedures for any other instumentatron or equipment used will be <br /> documented at the request of the client or regulatory authoriiy <br /> All equipment will be checked daily and replaced as necessary Instrument manuals and an <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 />