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17 March 2003 <br /> AGE-NC Project No. 01-0886 <br /> Page 5 of 5 <br /> 4.1.1 Soil Sampling Collection and Analysis <br /> Soil borings to be sampled at discreet five-foot intervals will be sampled using a 1.25-inch Geoprobe <br /> soil sampling assembly loaded with four six-inch brass sleeves.Upon sample retrieval, the ends of <br /> the second sleeve will be covered with Teflon sheets, capped and sealed with tape. <br /> Appropriately sealed and labeled samples will be placed in a chilled container under ice and <br /> transported under chain-of-custody procedure to a DHS-certified laboratory.Each sample sleeve will <br /> be labeled with the boring designation,depth,time,date and sampler's initials. Soils encountered in <br /> the borings will be visually classified by an AGE geologist in accordance with the Unified soil. <br /> Classification System(USCS).Additionally,soil samples will be field screened for the presence of <br /> volatile organic compounds using an organic vapor meter(OVM), equipped with photo-ionization <br /> detector(PID). <br /> 4.1.2. Equipment Decontamination <br /> Prior to use,all sampling tools used for sample collection will be thoroughly rinsed with clean water <br /> after being washed with a solution of Alconox. All probing rods will be cleaned prior to <br /> advancement at each probe boring location. <br /> 4.1.3. Boring Abandonment <br /> All probe borings will be permanently sealed to prevent vertical migration of contaminants. Soil <br /> borings shall be abandoned by backfilling with portlanVfrom the total depth to surface grade. <br /> 6emt&j <br />