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Superior Precision Ana/ytiCa/, //7C <br /> - <br /> A member of ESSCON Environmental Support Service Consortium <br /> 10C E R T I F I C A T E O F A N A L Y S I S <br /> TOTAL PETROLEUM HYDROCARBONS <br /> QA/QC Information <br /> Laboratory Number: 50149 <br /> NA - Analysis NOT required <br /> ND - Not Detected above quantitation limit <br /> ug/L = parts per billion (ppb) <br /> EPA SW-846 Method 5030/8015M/8020 Total Volatile Petroleum Hydrocarbons/BTXE <br /> Minimum Quantitation Limit for Gasoline in water: 50 ug/L <br /> Minimum Quantitation Limit for BTXE in water: 0.5 ug/L <br /> Matrix: Water <br /> Analyte Spike Recovery RPD Control Limits <br /> Gasoline_Range 83/89 7 65-135 <br /> Benzene 86/91 6 65-135 <br /> Toluene 87/96 10 65-135 <br /> Ethyl Benzene 87/95 9 65-135 <br /> Total Xylenes 90/100 11 65-135 <br /> I <br /> * - Hydrocarbons were found in the range of gasoline, but do not <br /> resemble a gasoline fingerprint. ! <br /> Senior Chemist <br /> Account Manager <br /> Page 2 of 2 <br /> Certified laboratories <br /> 825 Arnold Dr Scute 1 14 1 555 Burke St Unit 1 309 S Cloverdale St Suite B-24 <br /> Martinez California 94553 San Francisco California 94124 Seattle Washington 98108 <br /> (5 10) 229-1512 / fax (51 0) .229-1526 (41 5) 647-2081 / fax (415) 821-7123 (206) 763-2992 / fax (206) 763-8429 <br />