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CAMBRIA <br /> SOIL°STOCKPILE SAMPLING PROCEDURES <br /> I <br /> After confirming a release from underground gasoline storage tanks, product piping or pump islands, soil <br /> excavation is often completed to remove hydrocarbon bearing soils which for pose a threat to ground water <br /> quality beneath a site. The removed soils are typically stockpiled on site pending the results of laboratory <br /> analysis for soil samples collected from the stockpiles. Cambria has developed standard sampling procedures <br /> to characterize stockpiled soils for on-or off-site treatment,or offsite disposal. The procedures ensure that the <br /> samples are collected,handled,addocumented in compliance with Federal, State and local regulatory agency <br /> guidelines. <br /> Cambria's stockpile sampling procedures are based primarily on Bay Area Air Quality Management District <br /> regulations' and those of the anticipated landfill. One composite soil sample is collected for every 20 to 50 cubic <br /> yards of excavated soil. Each composite sample consists of four discreet soil samples collected from the stockpile <br /> which are combined in the laboratory. The samples are collected by dividing each 20 to 50 cubic yard volume <br /> into 4 sectors. One discreet soil sample is collected from each sector. <br /> The samples are collected by digging away approximately 2 ft of the surface soils. A clean brass tube is then <br /> driven into the exposed soils. The ends of the tube are trimmed flush,capped with Teflon tape and plastic end <br /> caps,labeled,refrigerated and transported under chain of custody to a State certified laboratory. <br /> ` San Francisco Bay Area Air QualityManagement District, 1989 Regulation 8, Organic Compounds, Rule 40,Aeration of <br /> Contaminated Soil and Removal of Underground Storage Tanks,February 15, 1989 7 pp. <br /> f <br />