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LABORATORY TESTING RESULTS <br /> Since the on-site soils appeared to be "contaminated" , samples <br /> ' with the most contamination, according to the field meter, from <br /> each test boring were selected for total hydrocarbon analysis. <br /> ' Samples taken within the area of original underground tanks and <br /> at the interface between native soil and tank backfill were also <br /> selected for hydrocarbon analysis. Presented below are results <br /> ' of total petroleum hydrocarbons tests performed on soil samples <br /> obtained from the pro]ect site. A copy of the test results from <br /> the analytical laboratory is also attached. <br /> ' <br /> Sample �# <br /> P Boring & Depth Gasoline and Diesel Fuel <br /> ' concentration m k <br /> SAMPLE # 1 TB-1 @ 2 . 0 ' 196 ** <br /> ' SAMPLE # 2 TB-1 @ 10. 0 ' <br /> None Detected (EPA 8015) <br /> SAMPLE # 3 TB-1 @ 15. 0 ' None Detected (EPA 8015) <br /> SAMPLE # 4 TB-3 @ 2 . 01 None Detected (EPA 8015) <br /> SAMPLE # 5 TB-3 @ 15. 0 ' <br /> None Detected (EPA 8015) <br /> ' SAMPLE # 6 TB-3 @ 20. 0 ' None Detected (EPA 8015) <br /> Note; "None Detected" at <10 mg/kg <br /> ' ** C4 - C12 Gasoline Scan <br /> ' DISCUSSIONS AND CONCLUSIONS <br /> ' Based on the results of total hydrocarbon concentration analysis <br /> it appears that the highest concentration, at 196 m /k s <br /> from <br /> soils sampled in test boring TB-1 at a depth of 2feet below <br /> ' existing grade. Though vapor detector has registe d <br /> some <br /> reading on other samples taken at greater depths duringfield <br /> ' exploration, only that particular sample had shown measurable <br /> concentration by laboratory testing. All other selected soil <br /> samples from test boring TB-3 had "non-detected" results base on <br /> 10 mg/kg detection limit. <br /> 4 <br />