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� 1 <br /> a <br /> B-1 <br /> SOIL SAMPLING PROTOCOL AND ANALYTIC PLAN <br /> FOR <br /> AREAS OF LEADED GASOLINE IMPACTED SOIL MATERIALS <br /> FOUND AT 540; N. AURORA WAY <br /> -. STOCKTON, SAN JOAQUIN COUNTY, CALIFORNIA <br /> INTRODUCTION <br /> Soils at certain locations on property at 544 North Aurora Way, <br /> Stockton, California, have been found to contain a limited amount <br /> of spilled leaded gasoline. The areas were sampled by a <br /> consulting laboratory for fuel hydrocarbons and the predominant <br /> materials found appeared to be the leaded gasoline. Since the <br /> initial characterization, the San Joaquin County Local Health <br /> District has reviewed the situation and found the contents in the <br /> soil samples exceed threshold values, therefore- an additional <br /> soil sampling effort needs to be conducted to clarify the <br /> conditions at this site. The following is a soil sampling <br /> protocol analysis plan to obtain appropriate representative <br /> samples of site soils for chemical analysis and hence <br /> characterization and final management. <br /> THE PROTOCOL <br /> a. Laboratory. sample requirements <br /> Analysis of soils for chemicals generally involves <br /> .. considerable fluid extraction techniques utilizing water <br /> and/or inorganic and organic solvents . Sufficient <br /> quantities need to be obtained to allow for these processes . <br /> Therefore, at least 250 grams of material need to be <br /> obtained for each sample. <br /> b. Sample containers <br /> Soil samples needing petroleum hydrocarbon analyses should <br /> be obtained in -6" metal sample tubes with a teflon sheet <br /> septum and polyethylene caps. The tubes should be <br /> completely filled to eliminate headspace for volatilizing <br /> hydrocarbons . <br />