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1 <br /> Superior Precis or7 analytical, Inc_ <br /> ^ 825 Arnold Drive Suite 1 14 - 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 2 of 2 <br /> QA/QC INFORMATION <br /> SET 30172 <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 /> Mo-dified 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 /> EPA SW-846 Method 8020/BTXE - <br /> Minimum Quantitation Limit in Water: 0 5ug/L <br />. ANALYTE MS/MSD RECOVERY RPD CONTROL LIMIT <br /> --------------- ------ --------- --- --------------- <br /> Gasoline : 84/87 40 70-130 <br /> Benzene 79/72 906 70-130 <br /> Toluene : 90/91 10, 70-130 <br /> Ethyl Benzene 95/94 10 70-130 <br /> Total Xylenes 104/103 10 70-130 <br /> Senior Chemist <br /> Certified Laboratories <br />