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' pace. <br /> REPORT OF LABORATORY ANALYSIS <br /> THE ASSURANCE of OUAiITY <br /> los Jacqueline Doub QUALITY CONTROL DATA May 07, 1992 <br /> Page 7 PACE Project Number 420423506 <br /> Client Reference. Exxon 7-0131 <br /> tTPH GASOLINE/BTEX <br /> Batch 70 11912 <br /> Samples- 70 0084725 <br /> r <br /> METHOD BLANK <br /> Method <br /> Parameter Units MDL Blank <br /> TOTAL FUEL HYDROCARBONS, (LIGHT) - <br /> Purgeable Fuels, as Gasoline (EPA 8015) uy/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 /> IEthylbenzene ug/L 0 5 ND <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 /> Purges a Fuels, as Gasoline (EPA 8015) ug/L 50 355 108% 112% 3% <br /> Benzene ug/L 0 5 40 0 98% 107% 8% <br /> Toluene ug/L 0 5 40 0 105% 111% 5% <br /> Ethylbenzene ug/L 0 5 40 0 107% 108% 0% <br /> Xylenes, Total ug/L 0 5 80.0 105% 110% 4% <br /> MDL Method Detection Limit <br /> ND Not detected at or above the MDL <br /> RPD Relative Percent Difference <br /> f1 1 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 6180 Iowa City Iowa New York New York <br /> FAX 415 883 2673 San Francisca California Pittsburgh Pennsylvania <br /> Kansas City Missouri Denver Colorado <br /> Los Angeles California <br />