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1 <br /> SAMPLING PROCEDURES <br /> ' PRELIMINARY SITE INVESTIGATION <br /> UNIVERSAL FOREST PRODUCTS <br /> 1 26200 NOWELL ROAD <br /> THORNTON, CALIFORNIA <br /> Soil and groundwater sampling will be conducted to provide data <br /> to evaluate the extent of chemicals in the soil and groundwater <br /> at the Site Soil and groundwater samples will be used for <br /> chemical analysis . The methodology used for this sampling <br /> purpose is discussed in the following sections . <br />' Soil Sampling <br /> Soil may be collected for chemical analysis by directly driving a <br /> sampler containing vinyl acetate tubing or precleaned brass or <br /> stainless steel tubes into the soil to assess surface/subsurface <br /> level conditions. The samples must completely fill the tubes to <br /> minimize headspace and consequent loss of volatile contaminants, <br /> if present . These tubes shall be lined with aluminum foil or <br /> Teflon, capped with air-tight plastic lids, and taped around the <br /> caps to prevent possible moisture and chemical loss . Disturbed <br /> soil samples will be collected in 250-m1 3ars with taped, <br /> airtight lids . Each Dar will be completely filled with soil to <br /> minimize headspace and consequent loss of volatile contaminants, <br /> if present <br />' After being sealed and labeled, the soil samples will be <br /> maintained at a temperature of 4°C or lower using blue ice during <br />' delivery to the laboratory and prior to analysis by the <br /> laboratory Samples will be analyzed at the laboratory within <br /> specific holding times <br />' Groundwater Sampling <br />' Groundwater samples will be collected manually (hand--bailed) <br /> using a Teflon bailer. The samples will be transferred into 40- <br /> ml VOA vials with Teflon septa and 1-liter amber-colored glass <br /> bottles . The samples will be stored in a chilled cooler <br /> containing crushed ice to maintain the sample at 4°C for delivery <br /> to the laboratory. A field blank sample and duplicate will also <br /> A-1 <br />