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The soil sampler was driven 18 inches below the bottom of the augers using a <br /> 140-pound hammer free falling 30 inches. The number of blows necessary to <br /> drive the sampler was recorded on the boring log as a qualitative measure of the <br /> soil density (see Boring Logs-Appendix B). Soil samples were retained inside the <br /> split-spoon sampler in 6-inch long, 2-inch diameter brass sleeves. Each soil <br /> sample completely filled the sleeve so that no head space remained. Upon <br /> retrieval of the sampler from the borehole, the soils were screened for organic <br /> vapor emissions using a Micro-Tip portable photo-ionization detector (PID). The <br /> samples was monitored by recording peak readings after being placed into a <br /> ziplock plastic bag and manually agitated. The PID readings are included on the <br /> Boring Logs in Appendix B. <br /> Soil samples were retrieved for chemical testing by selecting an intact, filled <br /> sample sleeve of soil from the sampler. The exposed ends of the soil sample <br /> sleeves were covered with Teflon sheeting, fitted with plastic end caps, sealed and <br /> labeled. Sample labels included the following information: (1) boring number; <br /> (2) sample number; (3) date; (4) collector's initials; (5) sample owner; and (6) <br /> location. The soil samples selected for laboratory analyses were entered onto a <br /> Chain-of-Custody form, stored in a chilled ice chest and delivered to Sparger <br /> Technology, Inc. (Sparger) in Sacramento, California, a state certified analytical <br /> laboratory (Certification No. 1614). <br /> 6 <br />