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9.0 QUALITY CONTROL <br /> This quality assurance project plan describes the field and laboratory quality control procedures <br /> that will be implemented while completing tasks described previously. <br /> 9.1 Quality Assurance Objectives <br /> The quality assurance objective for analytical data is to provide environmental data of known and <br /> acceptable quality. To meet this objective, the following field and laboratory quality control <br /> procedures will be implemented. <br /> 9.2 Calibration of Field Equipment <br /> The following field equipment will require calibration: <br /> • pH meter <br /> • Electrical Conductivity Meter <br /> • Photoionization Detector(PID) (e.g. , MiniRae 2000) <br /> The conductivity, pH, and PID meters will be calibrated to standards before and after each day's <br /> use in accordance with the procedures and schedules outlined in the particular model's handbook. <br /> The results of calibrations and records of repairs will be recorded in a field notebook. <br /> Scheduled periodic calibration of testing equipment does not relieve field personnel of the <br /> responsibility of using properly functioning equipment. If an individual suspects an equipment <br /> malfunction,the device will be removed from service and tagged so that it is not inadvertently <br /> used, and the appropriate personnel will be notified so that recalibration can be performed or a <br /> substitute piece of equipment can be obtained. For this project, this notification will be made to <br /> Stephen G. Muir at(209) 369-9421. <br /> Calibration instructions will be included with each instrument and accompany the instrument to <br /> the field. <br /> M ain\D:AEnvironmenta1\LN CV\10152007.wpd 59 <br />