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Superior Precisior7 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 30781 <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 /> EPA SW-846 Method 8020/BTXE <br /> Minimum Quantitation Limit in Water 0 5ug/L <br /> *ANALYTE MS/MSD RECOVERY RPD CONTROL LIMIT <br /> Gasoline : 98/100 20 56-117 <br /> Benzene : 72/72 0% 59-149 <br /> Toluene : 80/79 1% 59-149 <br /> Ethyl Benzene : 87/85 2a 59-149 <br /> Total Xylenes - 92/91 10, 59-149 <br /> r, <br /> Senior Chemist <br /> Certified Laboratories <br /> 825 Arnold Dr Suite 1 14 1555 Burke St Unit 1 309 S Cloverdale St Suite B-24 <br /> Martinez California 94553 San Francisco California 94124 Seattle Wash;ngton 98108 <br />