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Superior precision ,Analytical, /rnc. <br /> 825 Arnold Dave Suite 1 14 • Martinez California 94553 - (510) 229-1512 / fax (5 101229-1526 <br /> C E R T I F I C A T E O F A N A L Y S I S <br /> ANALYSIS FOR TOTAL PETROLEUM HYDROCARBONS <br /> Page 2 of 2 <br /> QA/QC INFORMATION <br /> SET 30139 <br /> NA = ANALYSIS NOT REQUESTED <br /> ND = ANALYSIS NOT DETECTED ABOVE QUANTITATION LIMIT <br /> mg/kg = parts per million (ppm) <br /> OIL AND GREASE ANALYSIS By Standard Methods Method 5520F <br /> Minimum Detection Limit in Soil 50mg/kg <br /> Modified EPA SW-846 Method 6015 for Extractable Hydrocarbons <br /> Minimum Quantitation Limit for Diesel in Soil 1mg/kg <br /> EPA SW-846 Method 8015/5030 Total Purgable Petroleum Hydrocarbons <br /> Minimum Quantitation Limit for Gasoline in Soil lmg/kg <br /> EPA SW-846 Method 8020/BTXE <br /> Minimum Quantitation Limit in Soil 0 005mg/kg <br /> OANALYTE MS/MSD RECOVERY RPD CONTROL LIMIT <br /> Gasoline 72/74 30 70-130 <br /> Benzene 105/106 la 70-130 <br /> Toluene 104/105 10 70-130 <br /> Ethyl Benzene 100/102 20 70-130 <br /> Total Xylenes : 106/308 20 70-130 <br /> 1717-3 /4; 1 <br /> Senior Chemist <br /> Certified Laboratories ` <br />