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i <br /> IAEGIS ENVIRONMENTAL, INC. <br /> STANDARD OPERATING PROCEDURES <br /> RE. SOIL EXCAVATION AND SAMPLING <br /> SOP-2 <br /> Excavation and subsequent soil sampling is performed under the direction of a registered <br /> geologist or civil engineer To reduce the potential for cross-contamination, all excavation <br /> equipment is either steam cleaned or washed prior to use and between excavations Soil <br /> samples for chemical analysis are collected in cleaned, thin-walled brass tubes of varying <br />' diameters and lengths (e g , 6 inches long by 2 inches outside diameter) or other <br /> appropriate cleaned sample container If used, one tube may be set in a 2-inch inside <br /> diameter, hand-driven sampler To reduce the potential for cross-contamination between <br /> I samples, the sampler is washed in a solution and doubly rinsed between each sampling <br /> event <br /> Upon recovery, a portion of the soil sample is sealed for later screening with either a <br /> portable photoionization detector, flame ionization detector, or an explosimeter Another <br /> portion of the sample is used for description of the excavated materials A third portion <br /> of the sample is hermetically sealed, labeled and refrigerated for delivery, under strict <br /> chain-of-custody, to the analytical laboratory These procedures minimize the potential <br /> for cross-contamination and volatilization of volatile organic compounds prior to chemical <br /> analysis <br /> In the event the soil samples cannot be submitted to the analytical laboratory on the <br /> same day they are collected (e g , due to weekends or holidays), the samples are <br /> temporarily stored until the first opportunity for submittal either on ice in a cooler such <br /> as when in the field, or in a refrigerator at Aegis' office <br /> i <br /> ATTACHMENTISOP 2lSE^TEMBER 1992 <br /> I <br />