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AEGIS 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 />' samples, the sampler is washed in a solution and doubly rinsed between each sampling <br /> event <br />' Upon recovery, a porton 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 same <br />' day they are collected (e g , due to weekends or holidays), the samples are temporarily <br /> stored until the first opportunity for submittal either on ice in a cooler, such as when in the <br /> field, or in a refrigerator at Aegis' office <br /> 1 <br /> I <br /> I <br /> I <br /> aTTaCHMEff/SQ-ZSB-MMBER 1992 <br />