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Elks Lodge Property 0 0 <br /> South Center Street February 8, 2001 <br /> 317 Sou <br /> Stockton, California Page: Z <br /> This event will provide the data to evaluate the soil contamination and to profile the soil <br /> ' near the southwest corner of the concrete pad, and to determine if the groundwater has <br /> been impacted. The proposed boring location is shown in Figure 3 of this work plan. <br /> 3.1 Drilling <br /> A permits will be obtained, as necessary, for the boring before drilling begins. <br /> The soil boring will be accomplished using a mobile mounted drilling rig <br /> employing the use of a hollow stem flight auger whose outer diameter is no less <br /> than 6 inches. <br /> ' All drilling equipment will be thoroughly cleaned before drilling begins, to <br /> prevent the introduction of contamination from off site, and between borings to <br /> ' prevent cross contamination. <br /> The boring will be logged under the direct supervision of a registered <br /> professional using the Unified Soil Classification System (Appendix A). The <br /> color, texture, moisture, plasticity (if applicable), consistency of the earth <br /> materials, pertinent soil or bedrock characteristics, and any evidence of <br /> contamination will be noted. The water-bearing zone and the depth at which it <br /> will be encountered will be noted on this log. <br /> ' The boring will be drilled in such a manner as to prevent cross contamination <br /> between strata. The exploratory soil boring within the unsaturated zone will be <br /> backfilled with a cement and three percent (3%) Bentonite mixture. <br /> The cuttings from the drilling operation will be containerized in 55 gallon <br /> ' drums, pending the results of laboratory data. <br /> ' 3.2 Soil Sampling <br /> All soil sampling equipment will be thoroughly cleaned before and between <br /> t sampling to prevent cross contamination. Relatively undisturbed soil samples <br /> will be taken at intervals of not more than 5 feet in order to evaluate the <br /> subsurface materials, however, this sampling interval may be waived in <br /> ' saturated sands in which sample recovery is not possible. <br /> The soil samples will be taken using a California Modified Split Spoon sampler <br /> ' with brass liners. The sampler will be driven continuously by a wire line <br /> hammer. <br /> t <br />