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3.0 METHODS AND PROCEDURES <br /> 3.1 Health and Safety Plan <br /> As required by, and in accordance with 29 CFR, 1910.120, a site specific Health and Safety <br /> Plan was prepared for site activities The plan contains information and outlines measures to <br /> be taken to insure worker safety on the project A copy of this plan in contained in Appendix <br /> I. <br /> 3.2 Drilling Activities <br /> On May 3-5, 1993, three soil borings (MW2, MW3, and MW4) were drilled to depths of <br /> r� <br /> approximately X91 feet below grade. The bonngs were subsequently converted to groundwater <br /> monitoring wells <br />' Drilling was conducted by Spectrum Exploration (C57 License # 512268) using a drill rig with <br /> 10-inch hollow stem augers. An experienced field geologist was present to continuously log all <br /> drill cuttings and soil samples utilizing the Unified Soil Classification System. Descriptions of <br /> soil types encountered, sample collection intervals, and well construction details were recorded <br /> on well/boring logs (Appendix II). Cored soil samples were collected above and below the <br /> water table at 5 foot intervals in accordance with RESNA's Soil Sampling Protocol on file with <br /> PHS/EHD. Cored samples were collected using a split spoon sampler with brass liners. <br /> 1 <br /> Soil from one brass liner from each sampling interval was screened with a photoionization <br />' detector (PID) for volatile organic content. Three soil samples from each boring, based on <br /> depth and/or lithology, were submitted for laboratory analysis Analysis was conducted for <br />' benzene, toluene, ethylbenzene, xylenes (BTEX), and total petroleum hydrocarbons as gasoline <br /> (TPHG)by Sequoia Analytical (DHS Cert. No 1210) utilizing EPA Methods 8020 and modified <br />' 8015, respectively. In addition, the soil sample collected from boring MW4 (the presumed <br /> downgradient well) at a depth of 10 feet below grade (HST-MW4-10.0)was analyzed for soluble <br />' lead using deionized water as the extraction solution (EPA method 7421). Analytical results are <br /> summarized in Table 1. Laboratory data sheets and chain-of-custody documentation are <br /> contained in Appendix III <br /> PAR-0593 FNL. 4 <br /> 1 <br />