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^ <br /> � <br /> ETS ENVIRONMENTAL PROJECT 301 <br /> PAGE 3 <br /> 2. Send soil samples to an approved analytical <br /> laboratory for analysis of the following; benzene, <br /> ~° toluene, xylene' EDB, EDC and total purgeable <br /> hydrocarbons (gasoline or diesel ) . Analytical <br /> methodology is included as Appendix B. <br /> °~ <br /> 3. Drill, soil sample and log a single soil boring to a <br /> vertical depth of 10 feet at the location indicated <br /> on Figure 1-1 (No. 10) . The boring will be drilled <br /> ^~ at a 30 degree angle to sample soil directly beneath <br /> the waste oil tank. <br /> ~~ 4. Send the soil sample to an approved laboratory for <br /> analysis of the following ; benzene, toluene, xylene, <br /> EDB, EDC, and Should <br /> ~° any of the above tests return positive, additional <br /> ' \ \ <br /> analysis will include the metals Cd, Cr, Pb, Zn. <br /> 5. Prepare a report summarizing the analytical data, <br /> ~� findings, conclusions, and recommendations for <br /> further work as necessary. <br /> ~~ <br /> 4. 0 PROPOSED WORKPLAN <br /> The following proposed workplan describes the procedures <br /> ~° used to complete the scope of work outlined in Section 3. 0. <br /> Two soil borings are proposed at this time in the <br /> ^� locations indicated on Figure 1-1. Each soil boring will be <br /> sampled at intervals not to exceed five feet to an ' <br /> anticipated depth of 20 feet. Should hydrocarbon <br /> ~~ contamination be encountered, the boring and sampling will <br /> continue until at least two consecutive samples indicate no <br /> contamination or until groundwater is encountered' This <br /> judgement will be made in the field using visual and odor <br /> ~~ classification of the soil, and by the use of hydrocarbon � <br /> specific Drager tubes. <br /> Ak A soil boring, dr11led at a 30 degree angle, wilI be <br /> placed adjacent to the waste oil tank. The boring willproceed to a vertical depth of 10 feet and a single soil <br /> sample will be collected from beneath the center of the tank. too <br /> Once the borings have been completed, they will be <br /> backfilled with a neat cement - 5% bentonite slurry tremmied <br /> ~~ into the boring. A cement "plug" will be placed on top of <br /> the slurry from a depth of sin inches to grade. <br /> Soil samples will be collected in brass liners that have <br /> been driven into the soil according to the method described <br /> in Appendix A. Chain-of-Custody procedures will be followed <br /> ,~ at all times. Samples will be sent to a California certified <br /> analytical laboratory for analysis of the following <br /> ~~ <br />