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• <br /> GSI Field Methods and Procedures <br /> April 28, 1995 <br /> by alternately surging the well with a bailer, then purging the well with a pump to remove <br /> accumulated sediments and draw groundwater into the well Development continues until <br /> the groundwater parameters (temperature, pH, and conductivity) have stabilized After the <br /> wells have been developed, groundwater samples will be collected. Well development and <br /> sampling is performed by Gettler-Ryan Inc. of Dublin, California <br /> Storing and SampUng 9f Drill Cuttings <br /> Drill cuttings are stockpiled on plastic sheeting or stored in drums depending on site <br /> conditions and regulatory requirements Stockpile samples are collected and analyzed on <br /> the bass of one composite sample per 50 cubic yards of soil Stockpile samples are <br /> composed of four discrete soil samples, each collected from an arbitrary location on the <br /> stockpile. The four discrete samples are then composited in the laboratory prior to <br /> analysis <br /> Each discrete stockpile sample is colIected by removing the upper 3 to 6 inches of soil, and <br /> . them driving the stainless steel or brass sample tube into the stockpiled material with a <br /> hand, mallet, or drive sampler. The sample tubes are then covered on both ends with <br /> teflon sheeting or aluminum foil, capped, Iabeled, and placed in a cooler with blue ice for <br /> preservation A chain-of-custody form is initiated in the field and accompanies the selected <br /> soil samples to the analytical laboratory Stockpiled soils are covered with plastic sheeting <br /> after completion of sampling. <br /> A-3 GeoStrategies <br />