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WESTERN GEOLOGIC RESOURCES , INC , WESTERN GEOLOGIC RESOURCES,INC. STANDARD OPERATING PROCEDURES ') RE:SOIL SAMPLING SOP-2 ' !s Soil samples for chemical analysis are collected in thin-walled brass tubes,4-inches long by inches outside diameter. Four of these tubes and a spacer tube are set in a 2-inch inside diameter 1E inch split-barrel sampler. The split-barrel sampler is driven its entire length either hydraulically or using a 140-pound drol hammer.The sampler is extracted om the borehole and the brass tubes,containing the soil samples,ars removed.Uponremovalfrom the sampler,the selected brass tubes are immediatlytrimmedand cappec e a with aluminum foil and plastic caps. They are then hermetically scaled with duct tape,labeled anc refrigerated for delivery,under chain-of-custody,to the analytic laboratory.These procedures minimize The potential for cross-cou lamination and volatilization of volatile organic compounds(VOC)prior tc chemical analysis. One soil sample collected at each Sampling interval is analyzed in the field using either a photoionization detector(PID),a flame ionizing detector(FID),Oran explosimeter.The purpose t this field analysis is to qualitatively determine the presence or absence ofhydrocarbonsand toestablishwhich SDH samples will be analyzed at the laboratory. The soil sample is sealed in a zip-lock plastic bag and placed in the sun to enhance volatilization of the hydrocarbons from the sample. The data is recorded on the drill logs at the depth corresponding,to the sampling point. Other soil samples are collected to document the stratigraphy and estimate relative permeability Of the subsurface materials. All drilling and sampling equipment are steam-cleaned prior to use at each CL site aad beEwcen boreholes to minimize the potential for cross-contamination. Sam Ort/88 MEN ti�tae�: