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c GEOSTRATEGIES FIELD METHODS AND PROCEDURES Site Safety Plan Field work performed by GeoStrategies Inc. (GSI) is conducted in accordance with GSI's Health and Safety Plan and the Site Safety Plan. GSI personnel and subcontractors who perform work at the site are briefed on the contents of these plans prior to initiating site work. The GSI geologist or engineer at the site when the work is performed acts as the Site Safety Officer. GST utilizes a photoionization detector {PID) to monitor ambient conditions as part of the Health and Safety Plan. Collection of Soil Samples Soil is collected from excavations and brought to the surface with the bucket of the excavator. Loose soil is removed to expose a clean soil surface. The-soil sample is collected with a 2- inch-diameter, clean brass or stainless steel tube by either pushing the tube by hand, using a hand-driven soil sampling device, or a wooden mallet to drive the tube into the soil. After the sample tube is filled and removed, it is covered on both ends with Teflon sheeting or aluminum foil, sealed with plastic end caps, labeled, and placed in a cooler with blue ice for preservation. A chain-of-custody form is initiated in the field and accompanies the soil samples to the analytical laboratory. Storine and Sarnplin2 of Stockpiled Soils Excavated soils are stockpiled on plastic sheeting or stored in drums depending on site conditions and regulatory requirements. Stockpile samples are collected and analyzed on the basis of one composite sample per SO cubic yards unless otherwise noted. Stockpile samples are composed of four discrete soil samples, each collected from an arbitrary location on the stockpile. The four discrete samples are then composited in.the labdratory. Each discrete stockpile sample is collected by removing the upper 3 to 6 inches of soil, and them driving the stainless steel or brass sample tube into the stockpiled material with by hand, or drive sampler. . The sample tubes are then covered on both ends with Teflon sheeting or aluminum foil, capped, labeled, and placed in a cooler with blue ice for preservation. A chain- of-custody form is initiated in the field and accompanies the selected soil samples to the analytical.laboratory. Stockpiled.soils are covered with plastic sheeting after completion of sampling. A-1