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WGR <br /> WESTERN GEOLOGIC RESOURCES INC. <br /> STANDARD OPERATING PROCEDURES . <br /> RE:SOIL SAMPLING <br /> SOP 2 <br /> Soil samples for chemical analysis are collected in thinwalled brass tubes,4-in longby 2-in outside , . <br /> diameter, Four of these tubes and a spacer tube are sot in a 2-in inside diameter 18-in split barrel sampler. <br /> The split barrel sampleris driven it entire length hydraulically or using a 140 pound drop hammer. <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 /> aluminum foil and plastic caps. They are then hermetically sealedwith duct tape,labeled and refrigerated <br /> for delivery, under strict chain of eustody,.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 a photoionization <br /> detector(PID),a flame ionizing detector (FID)or an explosimeter.The purpose of this field analysis is <br /> to qualitatively determine the presence or absence of hydrocarbons and to establish which soil samples <br /> will be analyzed at the laboratory. The soil sample is sealed in a zip-lock plastic bag and placed in the sun <br /> to enhance volatilization of the hydrocarbons from the soil 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 sampling equipment are steam-cleaned prior to use at each <br /> site and between boreholes to minimize the potential for cross-contamination. <br /> SOP-1;Oct/1986 <br />