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r <br /> 1 N C 0 R P U R are 0 ® REPORT OF LABORATORY ANALYSIS <br />' THE ASSURANCE OF DUALITY <br /> Doug Oram QUALITY CONTROL DATA August 21 , 1992 <br /> Page 13 PACE Project Number 420814512 <br /> Client Reference Exxon 7-3942 (EE) <br /> ITPH GASOLINE/BTEX <br /> Batch 70 14860 <br /> Samples 70 0195683 <br /> METHOD BLANK <br /> Method <br /> Parameter Units MDL Blank <br /> TOTAL FUEL HYDROCARBONS, (LIGHT) - <br /> rPurgeable 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 /> Ethyl benzene 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 /> ameter Units MDL Value Recv Recv RPD <br /> wFu—rgeable Fuels, as Gasoline (EPA 8015) ug/L 50 364 94% 93% 1% <br /> Benzene ug/L 0.5 40.0 99% 93% 6% <br /> lToluene ug/L 0.5 40.0 1019 957. 6% <br /> Ethylbenzene ug/L 0 5 40.0 102% 96% 6% <br /> Xylenes, Total ug/L 0.5 80 0 108% 100% 7% <br /> LMDL Method Detection <br /> Limit <br /> RPD Relative Percent Difference <br /> r <br /> r <br /> 11 BigrtA Drive Offices Serving Miniteaparis 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 C-ty Missouri Denver Colorado <br /> Los Angeles California <br />