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p" ace" <br /> E (] R P [] R A T E [l REPORT OF LABORATORY ANALYSIS <br /> THE ASSURANCE CF QUALITY <br />;R)s Jacqueline Doub QUALITY CONTROL DATA May 07, 1992 <br /> Page 6 PACE Project Number- 420423506 <br /> Client Reference Exxon 7-0137 <br /> TPH GASOLINE/BTEX <br /> Batch 70 11894 <br /> Samples 70 0084695, 70 0084709, 70 0084717 <br /> METHOD BLANK <br /> Method <br /> Parameter Units MDL Blank <br /> TOTAL FUEL HYDROCARBONS, (LIGHT) - <br /> IPurgeable 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 /> ABORATORY CONTROL SAMPLE AND CONTROL SAMPLE DUPLICATE <br /> Reference Dupl <br /> arameter Units MDL Value Recv Recv RPD <br /> Purgeable Fuels, as Gasoline (EPA 8015) ug/L 50 320 106% 109% 2% <br /> Benzene ug/L 0 5 40 0 90% 97% 7% <br /> Toluene ug/L 0 5 40 0 98% 108% 9% <br /> Ethylbenzene ug/L. 0 5 40.0 96% 101% 5% <br /> Xylenes, Total ug/L 0 5 80 0 98% 103% 4% <br /> MDL Method Detection Limit <br /> ND Not detected at or above the MDL <br /> RPD Relative Percent Difference <br /> 11 Digital Drive Offices Serving Minneapolis Minnesota Charlotte North Carolina An Equal Opportunity Employer <br /> Novato CA 94949 Tampa Florida Asheville North Carolina <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 California <br />