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I <br /> l R t O R P U R A r E ckc4rm <br /> REPORT OF LABORATORY ANALYSIS <br /> THE ASSURANCE eF nUAILITY <br /> Ms Lisa Rainger QUALITY CONTROL DATA April 22, 1992 <br /> Page 8 PACE Project Number 420319518 <br /> Client Reference: Exxon 7-3708 <br /> TPH GASOLINE/BTEX <br /> Batch 70 10875 <br /> Samples: 70 0044472, 70 0044480, 70 0044502 <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 FPA 8020) : <br /> Benzene ug/L. 0.5 ND <br /> Toluene ug/L 0 5 ND <br /> Ethylbenzene ug/L 0 5 ND <br /> 1 Xylenes, Total ug/L 0.5 ND <br /> LABORATORY CONTROL SAMPLE AND CONTROL SAMPLE DUPLICATE• <br /> Reference Dupl <br /> warameter Units MDL Value Recv Recv RPD <br /> Purgeable Fuels, as Gasoline (EPA 8015) ug/L 50 278 98% 104% 5% <br /> Benzene ug/L 0 5 40 0 100% 104% 3% <br /> Toluene ug/L 0 5 40 0 101% 106% 4% <br /> Ethylbenzene ug/L 0 5 40.0 98% 104% 5% <br /> Xylenes, Total ug/L 0 5 80.0 104% 108% 3% <br /> 1 <br /> MDL Method Detection Limit <br /> ND Not detected at or above the MDL <br /> RPD Relative Percent Difference <br /> i <br /> 1 <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 />' <br /> TEL 415 883 6100 Iowa City Iowa New York New York <br /> FAX 415 883 2673 San Francisca California Pittsburgh,Pennsylvania <br /> Kansas City Missoun Denver Colorado <br /> Los Angeles,California <br />