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le <br /> Superior <br /> Analytical Laboratory <br />' Total Petroleum Hydrocarbons as Diesel <br /> by EPA SW-846 Method 8015M <br /> Diesel Range quantitated as all compounds from C10-C25 <br /> Quality Assurance and Control Data i <br />' Compound Laboratory Number 20843 <br /> Sample SPK Level SPK Result Recovery Limits RPD <br /> cone %- g � <br /> - <br /> For Soil Matrix (mg/Kg) <br />' CA271.29 04 / 05 - Sample Spiked: 20843 - 22 <br /> Diesel. 4 33 38/35 <br /> 103/94 50-150 9 <br /> ra Surrogate Recoveries (g) « <br /> Tetracosane <br /> 109/108 50-150 <br /> - Sample appears to a mixture ofasoli.ne diesel el and motor oil Motor oil <br /> r-oncentration is below the laboratory's reporting limit <br /> Surrogate was diluted out <br />� - Surrogate recovery is out low due to matrix interference Sample was extracted twice <br /> fte surrogate recovery failed each time <br />�finitions <br /> Not Detected <br /> ZL = Reporting Limit <br />�1 Not Analysed <br /> �D = Relative Percent Difference <br />.ig/L = parts per billion (ppb) ug/kg = parts per billion (ppb) <br /> �/L = parts per million (ppm) mg/kg = parts per million (ppm) <br /> Page 16 of 16 <br />