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i <br /> � a <br /> i� <br /> ATC Associates Inc. <br /> Quality Assurance/Quality Control Plan <br /> Revised 1998 <br /> i� <br /> f� 5 <br /> IIF I <br /> Electrical Conductivity <br /> Electrical Conductivity meter. Calibration: factory-,calibrated annually and periodically <br /> calibrated against laboratory prepared standard calibration solution. <br /> Water Tem erature II <br /> I <br /> Mercury or digital thermometers. Calibration: factory calibrated once. <br /> �j <br /> i] <br /> Combustible Gas/Oxygen <br /> Combustible gas/oxygen meter. Calibration: factory calibrated;field calibrated monthly, zeroed <br /> daily according to manufacturers instructions. <br /> Miscellaneous Measuring Devices j <br /> Calibration procedures for any other measuring device used will be documented at the request <br /> i} i <br /> I,. <br /> of the regulatory authority. <br /> i <br /> All equipment will be checked daily and replaced as necessary. !Instrument manuals and an instrument <br /> log book will accompany equipment into the field. Any calibration, repairs or related information will <br /> be recorded in the log book. <br /> 8,0 LABORATORY QA/QC PIAN <br /> r <br /> Soil and groundwater samples will be submitted to a State Certified Hazardous Waste Laboratory for <br /> chemical analysis of hazardous constituents. Established QA/QC procedures for analytical operations <br /> will include sample custody procedures, standards of analytical accuracy, analysis of matrix spikes and <br /> method blanks, data reduction, verification of raw analytical data, and maintenance of control charts to <br /> monitor analytical performance. These QA/QC procedures are outlined in the laboratory QA/QC Plan <br /> which is available upon request. Organic chemical analyses will be performed in conformance with <br /> i <br /> 6 <br />