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paceeREPORT OF LABORATORY ANALYSIS <br /> THE ASSURANCE OF QUALITY <br /> MD <br /> Mr James Jacobs QUALITY CONTROL DATA June 16, 1992 <br /> Page 25 PACE Project Number 420605525 <br /> Client Reference Exxon 7-3330 (C&M) <br /> TPH GASOLINE/BTEX <br /> Batch 70 13190 <br /> Samples 70 0159180, 70 0159210 <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 /> i <br /> Xylenes, Total ug/L 0 5 NO <br /> ItATORY CONTROL SAMPLE AND CONTROL SAMPLE DUPLICATE <br /> Reference Dupl <br /> Parameter Unfits MDL Value Recv Recv RPD <br /> Purgeable Fuels, as Gasoline (EPA 8015) ug/L 50 428 103% 102% 0% <br /> Benzene ug/L 0 5 40 0 109% 101% 7% <br /> Toluene ug/L 0 5 40 0 111% 103% 7% <br /> Ethylbenzene ug/L 0 5 40 0 114% 106% 7% <br /> Xylenes, Total ug/L 0 5 80 0 115% 104% 10% <br /> MDL Method Detection Limit <br /> ND Not detected at or above the MDL <br /> RPD Relative Percent Difference <br /> lie <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 />