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17 October 2007 <br />AGE -NC Project No. 07-1569 <br />Page 5 of 5 <br />4.2. SOIL SAMPLING PROCEDURES <br />Soil samples collected from the base and/or sidewalls of the excavation will be obtained using the <br />excavator. Soil samples will be collected from the bucket of the excavating equipment with a metric <br />soil sampling hammer and one 6 -inch long by 2 -inch diameter brass sleeve, from the excavated soil <br />material. The exposed ends of the sample sleeve will be covered with Teflon sheets, capped and <br />sealed with tape. <br />Soil samples will be collected from soil stockpiles by digging approximately one foot into the soil <br />stockpile. Soil samples will be collected by hand sampling methods using a stainless steel or carbon <br />steel trowel, by pressing a metric soil sampling hammer and one 6 -inch long by 2 -inch diameter <br />brass sleeve into the soil stockpile. <br />Following sample collection, each sample sleeve will be labeled with the boring location, depth, <br />time, date and sampler's initials. Appropriately sealed and labeled samples will be placed in a chilled <br />container under ice and transported under chain -of -custody procedure to a DHS -certified laboratory. <br />4.3. EXCAVATION BACKFILLING PROCEDURES <br />The excavation will be backfilled with the removed material, if it has been determined to be clean <br />or uncontaminated. If the excavated material is determined to be impacted, clean fill soil will be <br />imported from other areas of the site or from off-site, for backfilling purposes. <br />4.4. EQUIPMENT DECONTAMINATION <br />All sampling tools used for sample collection will be thoroughly washed with a solution of Alconox <br />and rinsed with clean water prior to each sampling location. <br />Advanced GeoEnvironmental, Inc. <br />