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4ace REPORT OF LABORATORY ANALYST <br /> TME ASSURANCE aF DUALITY <br /> �s Sheila Richgels QUALITY CONTROL DATA February 24, 1994 <br /> page 9 PACE Project dumber. 440217513 <br /> Client Reference: Exxon 7-0137 (EE) <br /> PURGEABLE FUELS AND AROMATICS <br /> Batch. 70 28441 <br /> Samples 70 0248450, 70 0248469, 70 0248477, 70 0248485, 70 0248493 <br /> 70 0248507, 70 0248515 <br /> METHOD BLANK. <br /> Method <br /> Parameter Units MDL Blank <br /> 0 AL FUEL HYDROCARBONS, (LIGHT) . <br /> Purgeable Fuels, as Gasoline (EPA 8015M ug/L 50 ND <br /> PURGEABLE AROMATICS (BTXE BY EPA 8020M) - <br /> Benzene ug/L 0.5 ND <br /> Toluene ug/L 0 5 ND <br /> Ethylbenzene ug/L 0.5 ND <br /> Xylenes, Total ug/L 0 5 ND <br /> SPIKE AND SPIKE DUPLICATE <br /> Spike <br /> Spike Dupl <br /> Parameter Units MDL 700247284 Spike Recv Recv RPD <br /> Benzene ug/L 0 5 ND 40 0 100% 99% 1% <br /> Toluene ug/L 0.5 ND 40 0 96% 96% 0% <br /> Ethylbenzene ug/L 0 5 ND 40 0 98% 97% 1% <br /> Xylenes, Total ug/L 0 5 ND 120 92% 92% 0% <br /> LABORATORY CONTROL SAMPLE AND CONTROL SAMPLE DUPLICATE <br /> Reference Dupl <br /> Parameter Unfits MDL Value Recv Recv RPD <br /> Benzene ug/L 0 5 40.0 99% 98% 1% <br /> Toluene ug/L 0 5 40 0 97% 98% 1% <br /> Ethylbenzene ug/L 0.5 40 0 97% 97% 0% <br /> Xylenes, Total ug/L 0.5 120 100% 99% 1% <br /> 1 1 Digital Drive An Equal Opportunity Employer <br /> Novato CA 94949 <br /> TEL 415 883 6100 <br /> FAX 415 883 2673 <br />