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GSI Field Methods And Procedums <br /> Updated August 16, 1995 <br /> 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 continued until <br /> the groundwater parameters (temperature, pH, and conductivity) have stabilized Well <br /> development is performed by Gettler-Ryan Inc of Dublin, California Wells are monitored <br /> and sampled on a quarterly basis by Unocal Corporation's monitoring and sampling <br /> contractor <br /> Storing and Sampling of 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 basis 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 analysis. <br /> Each discrete stockpile sample is collected 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 teflon <br /> sheeting or aluminum foil, capped, labeled, 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 <br />