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i <br /> based on field observations. The'soil samples were;collected in brass:tubes driven by <br /> a rubber mallet into the soil directly behind the teeth of the backhoe or excavator <br /> bucket. Five (5) sidewall samples and one (1) bottom sample were collected from the <br /> East Excavation, and four (4) sidewall and one (1) bottom sample were collected from <br /> the West Excavation. The soil sample locations are shown on Exhibit 2. <br /> The soil samples were collected in 2.5 inch-diameter brass tubes, and sealed with <br /> teflon, end caps, and tape. The samples were then labeled in, accordance with EPA <br /> protocols, recorded on chain-of-custody documents, inserted into zip-lock plastic bags, <br /> placed in a cooler at 4 degrees centigrade (4°C) or less, and transported to FGL <br /> Environmental (FGL), a California State Certified Laboratory, with the Chain-of- <br /> Custody for the specified analyses. <br /> 4.3 Analytical Results - Confirmation Soil Samples (First Round) <br /> EAST EXCAVATION <br /> Six (6) soil samples from the East Excavation were analyzed by FGL in accordance <br /> with state guidelines and EPA protocols. The samples were analyzed for TPHg and <br /> BTEX using EPA Methods 8015M and 8020, respectively. Detection limits were 1.0 <br /> mg/kg for TPHg and .005 mg/kg for BTEX. Non-detectable concentrations of TPHg <br /> and BTEX were reported in all six (6) soil samples. The laboratory reports and chain- <br /> of-custody documents are included in Appendix A. <br /> WEST EXCAVATION <br /> Five (5) soil samples from the West Excavation were analyzed by FGL in accordance <br /> i with state guidelines and EPA protocols. All five samples were analyzed for TOG and <br /> VOH using EPA Methods 418.1 and 8010, respectively. Detection limits were 10.0 <br /> a mg/kg for TOG and 5.0 ug/kg for VOH. In addition, bottom sample WO-10 was <br /> analyzed for Nickel using EPA Method 6010 and a detection limit of 3.0 mg/kg. <br /> Non-detectable concentrations of TOG and all VOH analytes were reported in all five <br /> samples. Laboratory analysis indicated a concentration of 38 mg/kg of Nickel in soil <br /> sample WO-10. A test for pH was then performed on sample WO-10 prior to running <br /> the Waste Extraction Test (WET). Laboratory results indicated a pH of 7.67, and <br /> deionized water was used to perform the Nickel extraction. Analytical results of the <br /> iWET analysis indicated non-detectable concentrations of soluble nickel. The <br /> detection limit was 0.3 mg/kg. The laboratory reports and chain-of-custody documents <br /> Fare included in Appendix A. <br /> 6 of 10 ' <br />