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cross contamination, clean augers were used to drill each borehole Soil boring logs are <br /> included as Appendix I <br /> 4.2 Soil Sam le Collection <br /> Two soil samples per boring, with the exception of SB9, were collected for laboratory analyses, <br /> one from the capillary fringe (approximately 7 to 8 S feet below grade) and a second from above <br /> or below the water table based on field observations A soil sample was collected from the <br /> capillary fringe in boring SB9 and submitted for laboratory analyses Samples were collected <br /> using a 2-inch diameter by 18-inch long modified California split spoon sampler lined with thin <br /> walled brass soil tubes The sampler was driven its entire length into undisturbed soil by a 140- <br /> pound hammer Samples collected for laboratory analysis were collected as split samples in 3- <br /> inch long brass soil tubes for submittal to different analytical laboratories Subsequent to sample <br /> collection the borings were grouted to the surface with a neat cement grout using the tremie <br /> method <br /> 4.3 Groundwater Sampling <br /> Four soil borings (SB2, SB3, SBS, SB9) were further advanced below the water table to a depth <br /> 1 of approximately 10 feet below grade and one soil boring (SB7) was advanced to a depth of <br /> approximately 20 feet below grade in order to obtain discrete groundwater samples The augers <br /> were retracted slightly to allow groundwater to flow into the boreholes <br /> ' One discrete groundwater sample was collected from each of the specified soil borings advanced <br /> below the water table by using a dedicated disposable bailer which retrieved groundwater from <br /> 1 within the hollow stem auger Samples were collected into 40 ml glass bottles with teflon septa <br /> as well as one-liter amber glass bottles for submittal to different analytical laboratories <br /> i <br /> 4.4 laboratory Analysis <br /> Samples were placed immediately on ice and transported to a DHS certified laboratory under <br /> chain of custody protocol Argon Mobile Labs of Ceres, California (DHS cert #1873) analyzed <br /> 1500871R 053194 FNL 4 <br />