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i <br /> 2.0 PROPOSED SOIL REMOVAL ACTIVITIES <br /> Based on this background information, the excavation project will be <br /> performed in the following manner. <br /> 2.1 Access <br /> Arrangements will be made with the J.R. Simplot Company to allow access <br /> by transportation and excavation equipment to the site. <br /> 2.2 Excavation Technique <br /> ' Since the soil removal action will involve the excavation of soils to a depth <br /> of over eight feet adjacent to an existing building foundation, shoring of the <br /> ' foundation will be required. Seven, two inches diameter steel piles will be driven <br /> into the ground and tied into the building foundation for support. <br /> With the shoring in place, the excavation activities will be initiated. The <br /> surface extent of the area to be excavated is shown on Figure 4. The vertical <br /> ' extent is generally an inverted conical shape as shown on the cross sections <br /> presented in Figure 5. As shown in Figure 5, the assumed depth of the <br /> excavation will be eight feet beneath the ground surface (bgs) and should yield <br /> approximately 72 cubic yards (cu.yds.) of soil for disposal. <br /> The area will be excavated by a backhoe or excavator with the excavated <br /> material separated into two quantities: 1) the soil expected to have greater than <br /> 15 mg/kg of DBCP and 2) the soil expected to have less than 15 mg/kg DBCP. <br /> The soil will be loaded directly into on-site (10-20 cu.yds.) storage/transport bins. <br /> The bins will be lined with a plastic liner and covered, once filled, with a water <br /> ' tight cover. <br /> 5 <br />