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N C O f1 P O R A T E acee <br /> REPORT OF LABORATORY ANALYSIS <br /> THE ASSURANCE OF QUAtiTY <br /> 1• <br /> Mr James Jacobs QUALITY CONTROL DATA June 16, 1992 <br /> Page 24 PACE Project Number 420605525 <br /> Client Reference- Exxon 7-3330 (C&M) <br /> TPN GASOLINE/BTEX <br /> Batch 70 13141 <br /> Samples 70 0159164, 70 0159172, 70 0159199, 70 0159202 <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 0 6 <br /> Toluene ug/L 0 5 ND <br /> Ethylbenzene ug/L 0 5 ND <br /> Xylenes, Total ug/L 0 5 ND <br /> itATORY 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 50 303 89% 90% 1% <br /> Benzene ug/L 0 5 40 0 107% 110% 2% <br /> Toluene ug/L 0 5 40 0 101.% 105% 3% <br /> Ethylbenzene ug/L 0 5 40 0 90% 103% 13% <br /> Xylenes, Total ug/L 0 5 80 0 102% 111% 8% <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 5100 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 />