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Superior Precision Analytical, Inc. <br /> 1555 Burke Unit I • San Francisco California 94124 ■ (4 151 647-2081 / fax (4 15) 821-7123T v <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: 15050 <br /> NA = ANALYSIS NOT REQUESTED <br /> ND = ANALYSIS NOT DETECTED ABOVE QUANTITATION LIMIT <br /> mg/kg = parts per million (ppn) <br /> * = Not analyzed within 14 day hold time. <br /> OIL AND GREASE ANALYSIS By Standard Methods Method 552OF: <br /> Minimum Detection Limit 3n 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: lmg/kg <br /> EPA SW-846 Method 8020/BTXE <br /> Minimum Quantitation Limit in Soil: 0. 005mg/kg <br /> ANALYTE MS/MSD RECOVERY RPD CONTROL LIMIT <br /> Gasoline: 107/105 2% 75-125 <br /> Benzene: 86/99 140 72-125 <br /> Toluene: 79/92 15% 75-125 <br /> Ethyl Benzene: 77/91 17% 75-125 <br /> Total Xylenes: 84/99 16% 75-125 <br /> • Senior Chemist <br /> Account Manager <br /> Certified laboratories <br />