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a <br /> Superior Precision Ana/ytica/, inc_ <br /> 825 Arnold Dive Suite 1 14 • Martinez California 94553 • (510) 229 1512 1 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 3 of 3 <br /> QA/QC INFORMATION <br /> SET. 85178 <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-SW846 Method 8015 for Extractable Hydrocarbons : <br /> Minimum Quantitation Limit for Diesel in Soil : lmg/kg <br /> Standard Reference : NA <br /> OEPA-SW846 Method 8015/5030 Total Purgable Petroleum Hydrocarbons : <br /> Minimum Quantitation Limit for Gasoline in Soil - lmg/kg <br /> Standard Reference - 10/04/91 <br /> SW-846 Method 8020/BTXE <br /> Minimum Quantitation Limit in Soil 0 . 005mg/kg <br /> Standard Reference : 10/11/91 <br /> ANALYTE REFERENCE SPIKE LEVEL MS/MSD RECOVERY RPD CONTROL LIMIT <br /> Oil & Grease NA NA NA NA NA <br /> Diesel NA NA NA NA NA <br /> Gasoline 03/03/92 200 ng 102/102 0 70-130 <br /> Benzene 02/26/92 200 ng 94/94 0 70-130 <br /> Toluene 02/26/92 200 ng 105/105 0 70-130 <br /> Ethyl Benzene 02/26/92 200 ng 110/110 0 70-130 <br /> Total Xylenes 02/26/92 200 ng 112/112 0 70-130 <br /> Richard Srna, Ph. D. <br /> Laboratory Directo J / <br /> Certified Laboratories <br />