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�k <br /> ATC Associates Inc. <br /> Quality Assurance/Quality Control Plan <br /> Revised March 1998 <br /> i� <br /> Equipment and well material decontamination will be conducted on an impermeable surface and all <br /> ie <br /> decontamination eluent will be contained. All surfaces of the equipment will be thoroughly <br /> decontaminated using a steam cleaner. The equipment will be placed on a drying rack for air drying. <br /> 10 ;I <br /> The decontamination water will be stored in containers certified for hazardous materials storage and <br /> :r <br /> disposed of in an approved manner. �d <br /> �6 <br /> Sample equipment to be used for pesticides and organic analysis will,!,be washed in a nonphosphate <br /> detergent (Alconox or equivalent) and rinsed with tap water, followed by deionized water. If the <br /> i equipment is for metals analysis, the initial rinse will be conducted with 0.1 N nitric acid followed by <br /> tap water and deionized water. <br /> :i <br /> it <br /> 7.0 FIELD EQUI[PMENT CALIBRATION AND MAINTENANCE <br /> CE <br /> The following measuring equipment may be used during the Remedial Investigation. Equipment is <br /> grouped by field activity. Calibration procedures and frequency are listed by piece. <br /> i� <br /> Soil Borings and Well Dimensions + <br /> Steel and coated cloth tape. Calibration: none. <br /> E <br /> a <br /> ip <br /> Water Level Measurements in Wells li <br /> Steel surveyors tape. Calibration: manufacturer supplied temperature correction will be applied <br /> !� s <br /> as applicable for field conditions. Electrical well sounders. Calibration: check against steel <br /> i� <br /> surveyor's tape. <br /> 'r <br /> .i <br /> E <br /> �I <br /> W:lAdminl.She11s1QAQC-98.DOC <br /> a <br /> M <br />