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I' r <br /> PCacee <br /> 0 R P O R A T E O REPORT OF LABORATORY ANALYSIS <br /> THE ASSURANCE OF QUALITY <br /> Mr James Jacobs QUALITY CONTROL DATA July 09, 1992 <br />' Page 6 PACE Project Number- 420630503 <br /> Client Reference Exxon 7-3330 (EE) <br /> TPH GASOLINE/BTEX <br /> Batch 70 13794 <br />' Samples 70 0173540 <br /> METHOD BLANK <br />' Method <br /> Parameter Units MDL Blank <br /> TOTAL FUEL HYDROCARBONS, (LIGHT) - <br />' Purgeable Fuels, as Gasoline (EPA 8015) ug/L 50 ND <br /> PURGEABLE AROMATICS (BTXE BY EPA 8020) <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 /> 1 <br /> LABORATORY CONTROL SAMPLE AND CONTROL SAMPLE DUPLICATE <br /> Reference Dupl <br /> Parameter Units MDL Value Recv Recv RPD <br /> Purgeable Fuels, as Gasoline (EPA 8015) ug/L 50 428 94% 96% 2% <br /> Benzene ug/L 0 5 40 0 98% 105% 6% <br /> Toluene ug/L 0 5 40 0 99% 105% 5% <br /> £thylbenzene ug/L 0 5 40 0 100% 107% 6% <br /> Xylenes, Total ug/L 0 5 80 0 101% 107% 5% <br /> MDL Method Detection Limit <br /> RPD Relative Percent Difference <br /> go <br /> 11 Digital Drive Offices Serving Minneapolis Minnesota Charlotte North Carolina An Equal Opportunity Employer <br /> Novato CA 94949 Tampa Florida Ashev& North Carofma <br /> TEL 415 883 6100 Iowa City Iowa New York,New York <br /> FAX 415 883 2673 San Francisco California Pittsburgh Pennsylvania <br /> Kansas City Missouri Denver Colorado <br /> Los Angeles Caffornna <br />