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pacesREPORT OF LABORATORY ANALYSIS <br /> TKE ASSURANCE OF aUA LITY <br /> r. James Jacobs QUALITY CONTROL DATA April 13, 1992 <br /> Page 25 PACE Project Number: 420406516 <br /> Client Reference: Exxon 7-3330 <br /> TPH GASOLINE/BTEX <br /> Batch: 70 11380 <br /> Samples: 70 0067863, 70 0067871 <br /> METHOD BLANK: <br /> Method <br /> Parameter Units MDL Blank <br /> TOTAL FUEL HYDROCARBONS, (LIGHT) : - <br /> Purgeable Fuels, as Gasoline (EPA 8015) ug/kg wet 200 ND <br /> PURGEABLE AROMATICS (BTXE BY EPA 8020) : - <br /> Benzene ug/kg wet 1.0 ND <br /> Toluene ug/kg wet 1.0 ND <br /> Ethylbenzene ug/kg wet 1 .0 ND <br /> Xylenes, Total ug/kg wet 1.0 ND <br /> ABORATORY CONTROL SAMPLE AND CONTROL SAMPLE DUPLICATE: <br /> Reference Dupl <br /> k-Weter Units MDL Value Recv Recv RPD <br /> Purg------a61e Fuels, as Gasoline (EPA 8015) ug g wet 200 367 106% 99% 6% <br /> Benzene ug/kg wet 1.0 40.0 99% 95% 4% <br /> Toluene ug/kg wet 1.0 40.0 101% 102% 0% <br /> Ethylbenzene ug/kg wet 1.0 40.0 101% 98% 3% <br /> Xylenes, Total ug/kg wet 1.0 80.0 107% 105% 1% <br /> MDL Method Detection Limit <br /> RPD Relative Percent Difference <br /> ND <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 />