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paces REPORT OF LABORATORY ANALYSIS <br /> THE ASSURANCE OF QUALM <br /> �r. Robert Spare QUALITY CONTROL DATA November 09, 1993 <br /> Page 5 PACE Project Number 431101506 <br /> Client Reference: Mark Group 92-11-77103 <br /> PURGEABLE FUELS AND AROMATICS <br /> Batch 70 26141 <br /> Samples: 70 0184193 <br /> METHOD BLANK: <br /> Method <br /> Parameter Units MDL Blank <br /> TOTAL 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 NO <br /> Xylenes, Total ug/L 0.5 ND <br /> LABORATORY CONTROL SAMPLE AND CONTROL SAMPLE DUPLICATE <br /> Reference Dupl <br /> �arameter Units MDL Value Recv Recv RPD <br /> urgeable Fuels, as Gasoline (EPA 8015M ug/L 50 1000 101% 1007. 0% <br /> Benzene ug/L 0 5 100 95% 99% 4% <br /> Toluene ug/L 0.5 100 100% 104% 3% <br /> Ethylbenzene ug/L 0.5 100 100% 103% 2% <br /> Xylenes, Total ug/L 0.5 300 99% 103% 3% <br /> 1 <br /> 1 l Digital Drive An Equal Opportunity Employer <br /> Novato CA 94949 <br /> TEL 415 083 6108 <br /> FAX 415 883 2673 <br />