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E] Superior Precision .analytical, Inc. <br /> 825 ArnolC Drive. Suite f t4 ■ Martinez. California 94553 - (510) 229-1512 /fax (510) 229-1526 <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 4 of 4 <br /> QA/QC INFORMATION <br /> SET: 30505 <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 S520F: <br /> Minimum Detection Limit in Soil : 50mg/kg <br /> Modified EPA SW-846 Method 8015 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 : 1mg/kg <br /> PA SW-846 Method 8020/BTXE <br /> Minimum Quantitation Limit in Soil : 0 . 005mg/kg <br /> ANALYTE MS/MSD RECOVERY RPD CONTROL LIMIT <br /> --- --- - <br /> Gasoline : 116/106 9% 70-130 <br /> Benzene : 73/85 150-. 70-130 <br /> Toluene : 80/87 8% 70-130 <br /> Ethyl Benzene : 73/77 50C 70-130 <br /> Total Xylenes : 90/91 101 70-130 <br /> Senior Chemist <br /> Certified Laboratories <br />