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a a <br /> WiN. Ail <br /> 1� <br /> WaterWork <br /> QualiV Assurance and Quality Control Plan <br /> The purpose of this plan is to describe field and laboratory <br /> quality control procedures that will be followed throughout this <br /> investigation. The quality assurance objective for this <br /> _w investigation is to provide representative data that are known to <br /> be of acceptable quality and statistically sound. The following <br /> field and laboratory procedures will be implemented to ensure <br /> h <br /> that this objective is met. 1; <br /> � <br /> 1. Field Equipment Calibration <br /> .y To ensure instrument reliability and consistency, the pH <br /> electrical conductivity, temperature, and electric water <br /> }de level meters will be calibrated daily and prior to use. <br /> Calibration results and instrument repairs will be recorded <br /> in a field notebook. <br /> F.� All equipment will be checked daily, and replaced if <br /> necessary, by a designated member of the field crew. <br /> Instrument manuals, including calibration and repair <br /> information, will accompany each instrument into the field. <br /> } 2. Field Quality Control Samples <br /> To ensure the quality of data collected, duplicates of 10* of <br /> soil and water samples will analyzed by a state certified <br /> laboratory. One travel blank will be provided with every <br /> shipment of groundwater samples to the analytical laboratory. <br /> To ensure uniform treatment of all samples submitted, the <br /> f � identity of the field quality control sample(s) will be <br /> unknown by the laboratory. <br /> 3. :'ravel Blanks <br /> When sampling groundwater, travel blanks will be used to <br /> detect the introduction of contaminants during transportation <br /> from the field to the laboratory. The travel blanks will be <br /> provided by Sequoia Analytical. They will betaken to the <br /> i field and accompany the collected groundwater samples to the <br /> laboratory.--for ..analysis. .. . _The. .blanks.. will consist of de- <br /> .., _. . . <br /> ionized water and analytically confirmed organic-free water. <br /> The blank . is numbered, packaged, and sealed in the same <br /> I ' <br /> manner as the other samples. <br /> r � <br /> VMS 111INNIMM <br /> j '• <br /> i • <br /> i <br />