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G� <br /> } � 4 <br /> GPCUNDWATER TECHNCLOGY <br /> STANDARD OPERATING PRCCEDU?T <br /> CONCERNING SOIL SAMPLING Mir CDOLCGY <br /> SCP 14 <br /> Soil samples shcuic 'e collected and preserved in <br /> accordance with Grcur.dnater Techgology Laboratory' s <br /> Standard Operating Prccsdurn (GTL SOP 15) concerning <br /> Soil Sample Collection and dandling when Sampling .for <br /> Volatile Organics. A hollow stem sr -1 auger should be <br /> used to drill to to desired sampling depth. A standard <br /> 2 inch diameter slit spoon sampler 18 inches in length <br /> shall be used to collect the samples. The samples are <br /> contained in 2 inch diameter by 6 inch long thin walled <br /> brass tube liners fitted into the split spoon sampler <br /> (three per sampler) . <br /> The split spoon sample= should be driven the full depth <br /> of the spoon into the soil using a 140 pound hammer. <br /> The spoon shall then be extracted from the borehole and <br /> the brass tube liners ccn':Fining the soil sample removed <br /> from the sample:. The finds of the liner tubes should be <br /> immediately covered with aluminum foil, sealed with a <br /> teflon or plastic cap, and then taped with duct tape. <br /> After being properly identified with sample data entered <br /> on a standard chain of custody form the samples shall be <br /> placed on dry ice (maintained below 40C). and transported <br /> to the laboratory within 24 hours. <br /> one of the three soil samples retreived at each sample <br /> depth shall be analyzed in the field using a photo:.oni— <br /> zation detector and/or explosimeter. The purpose of the <br /> f=eld analysis is to provide a means to choose samples <br /> to be laboratory analyzed for hydrocarbon concentrations <br /> and to enable comparisions between the field and <br /> laboratory analyses. The soil sampl-e shall be sealed in <br /> a plastic bag and placed in the sLifi to accelerate the <br /> vaporization of volatile hydrocarbons from the soil. one <br /> of the two field vapor instruments shall be used to <br /> quantify the amount of hydrocarbon released to the air <br /> from the soils. The data shall be recorded on the drill <br /> logs at the depth corresponding to the sample point. <br /> A . ❑D <br /> OF���� GROUNDWATER <br /> TECHNOLOGY,INC. <br /> CONSULTING GROUND WA TER GEOLOGIST; <br /> t <br /> i <br />