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Superior precision Analytical, Inc. <br /> A member of ESSCON Environmental Support Service Consortium <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: 15739 <br /> NA = ANALYSIS NOT REQUESTED <br /> ND = ANALYSIS NOT DETECTED ABOVE QUANTITATION LIMIT <br /> ug/L = parts per billion (ppb) <br /> OIL AND GREASE ANALYSIS By Standard Methods Method 5520F: <br /> Minimum Detection Limit in Water: 5000ug/L <br /> Modified EPA SW-846 Method 8015 for Extractable Hydrocarbons: <br /> Minimum Quantitation Limit for Diesel in Water: 50ug/L <br /> EPA SW-846 Method 8015/5030 Total Purgable Petroleum Hydrocarbons: <br /> Minimum Quantitation Limit for Gasoline in Water: 50ug/L <br /> �PA SW-846 Method 8020/BTXE <br /> Minimum Quantitation Limit in Water: 0.5ug/L <br /> ANALYTE MS/MSDRECOVERY RPD CONTROL-LIMIT <br /> - - <br /> Gasoline <br /> Range: 84/76 10% 56-117 <br /> Benzene:- 83/83 0% 59-149 <br /> Toluene: 86/86 0-% 59-149 <br /> Ethyl Benzene: 85/84 1% 59-149 <br /> Total Xylenes: - 91/93 2% 59-149 <br /> Senior Chemist <br /> Certified Laboratories Account Manager <br /> 1555 Burke St Unit I San Francisco, California 94124 ■ (415) 647-2081 /fax (4)5) 821-7123 <br />