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I <br /> F <br /> AGS Job No. 038033-1 <br /> s, Stockton, California <br /> ng the sampler into the native soil through the <br /> hollow center of the auger. The sampler will be driven IS inches <br /> with a standard 140-pound hammer dropped 30 inches. The number of <br /> blows required to drive the sampler each successive 6-inch <br /> interval will be counted and recorded as an indication of soil <br /> consistency. Examples of the Field Boring Log (Plate P-3) and the <br /> Boring Log Plate used in our final report (Plate P--4) are <br /> attached. <br /> Each sample will be inspected with a photoionizing hydrocarbon <br /> `,. vapor detector. These devices are useful for semiquantitatively <br /> evaluating the relative concentrations of volatile hydrocarbons. <br /> They cannot be used to give absolute levels of contamination. <br /> Samples collected for possible chemical analyses will be sealed <br /> with aluminum foil, plastic caps, and airtight tape. They will <br /> �r then be labeled and immediately placed in iced storage for <br /> transport to the analytical laboratory for testing. Chain of <br /> Custody Records will be initiated by the sampler and will <br /> accompany the samples to the laboratory. Copies of these records <br /> will be presented in our report. An example of a Chain of Custody___ <br /> Record attached (Plate P-5) . <br /> AVVliear 0e0Systems <br />