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G <br /> WESTERN GEOLOGIC RESOURCES INC. <br /> STANDARD OPERATING PROCEDURES <br /> RE:SOIL SAMPLING <br /> SOP 2 <br /> Soil samples for chemical analysis are collet ted in thin walled brass tubes,4-in long by2-in outside <br /> diameter.Four of these tubes and spacer tube are set in a 2-in inside diameter 18-in split barrel sampler. <br /> The split barrel sampler is driven it entire iength hydraulically or using a 140 pound drop aammcr. <br /> The sampler is extracted from the borehole and the brass tubes,containing the soil samples,are removed. <br /> Upon removal from the sampler, the selected brass tubes are immediately trimmed, capped with <br /> aluminuw fail and plastic caps.They are thea hermetically scaled with duct tape,labeled and refrigerated <br /> for delivery,under strict chain of custody,to the analytic laboratory. These procedures minimize the <br /> potential for cross-contamination and volatilization of volatile organic compounds (VOCs) prior to <br /> chemical analysis. <br /> One soil sample collected at each sampling interval is analyzed in the field using photoionization <br /> detector(PID),a flame ionizing detector(FID)or an=plosime!pr.The purpose of this field analysis is <br /> to qualitatively determine the presence or absence of hydrr,carbons and to establish which soil samples <br /> will be analyzed at the laboratory.The soil sample in a zip-lock plastic bag and placed is the sun <br /> to enhance volatilization of the hydrecarbcns from tl;e:oil sample. The data is recorded on the drill logs <br /> at the depth corresponding to the sampling point: <br /> Other soil samples are collected to document the stratigraphy and estimate relative permeability <br /> of the subsurface materials. All drilling and szmpling equipment are steam-cleaned prior to use at each <br /> site and between boreholes to minimize the potential for cross-contamination. <br /> i <br /> SOP-1;Oct/I988 <br />