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3 <br /> • Figure 2 Three soil samples were collected from below the former 26,000-gallon diesel <br /> tank, two soil samples were collected from below the former 10,000-gallon wastewater tank, <br /> and two soil samples were collected from below the former 2,000-gallon gasoline tank. A <br /> soil sample was also collected from below the remote fill line for the former 26,000-gallon <br /> diesel tank. <br /> 2 The upper two to three feet of soil was scraped away at the selected sample locations prior to <br /> collecting the sample Samples from beneath the former tanks were removed from the <br /> excavation by backhoe. Care was taken to select the most intact portions of soil in the <br /> backhoe bucket which had not contacted the sides of the bucket Clean brass tubes were then <br /> driven into the soil in the backhoe bucket Composite samples of the stockpiled soil removed <br /> from above and adjacent to the former underground storage tanks were also collected. <br /> 3. Sampling tools were decontaminated prior to each use by scrubbing in a tri sodium phosphate <br /> (TSP) solution followed by rinsing with deionized water Soil samples were logged on a <br /> chain of custody form,placed in ice chests and hand delivered to Canome Environmental <br /> Laboratory in Stockton for chemical analysis <br />• 4. Soil samples from beneath the former 26,000 gallon diesel tank, associated stockpile and <br /> remote fill line were analyzed for total extractable petroleum hydrocarbons by EPA Method <br /> 8015 and BTEX by EPA Method 8020 Soil samples from beneath the fonner 10,000-gallon <br /> wastewater tank and associated stockpile were analyzed for total extractable petroleum <br /> hydrocarbons by EPA Method 8015 and BTEX by EPA Method 8020,chlorinated <br /> hydrocarbons by EPA Method 8010, PCBs by EPA Method 8080, and the metals cadmium, <br /> chromium, lead and zinc. Soil samples from beneath the former 2,000-gallon gasoline tank <br /> and associated stockpile were analyzed for total petroleum hydrocarbons as gasoline by EPA <br /> Method 8015 and BTEX by EPA Method 8020,tetraethyl lead,and ethylene dibromide by <br /> EPA Method 504 <br /> 4.0 ANALYTICAL RESULTS <br /> 1 Results of laboratory analyses are shown in Table 1,and copies of the laboratory reports are <br /> included in Appendix D The soil samples from beneath the former 26,000-gallon diesel tank <br />. (SZ=2A,B, C) were reported to contain total extractable petroleum hydrocarbons ranging <br /> from 3,900 to 5,100 mg/kg and xylenes ranging from 0.016 to 0.072 mg/kg. The soil from <br /> ENVIRONMENTAL SOLUTIONS <br />