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AEGIS ENVIRONMENTAL, INC. <br />STANDARD OPERATING PROCEDURES <br />I 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 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 />�40 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 submrttal either on ice in a cooler, such as when in the <br />field, or in a refrigerator at Aegis' office <br />ATTACHMENT/SOP-2/SEPTEMBER 1992 <br />