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acee <br /> I N t: It R P 11 R A T E l] REPORT OF LABORATORY ANALYSIS <br /> THE ASSURANCE OF QUALITY <br /> 1*Mr James Jacobs QUALITY CONTROL DATA January 03, 1992 <br />' Page 6 PACE Project Number 411227503 <br /> Client Reference: Exxon Stockton,CA <br />' TPH GASOLINE/BTEX <br /> Batch 70 08892 <br /> Samples 70 0141770, 70 0141788 <br /> 1 <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 ND <br /> Toluene ug/L 0.5 ND <br />' Ethylbenzene ug/L 0.5 ND <br /> Xylenes, Total ug/L 0 5 ND <br /> 1 <br /> LABORATORY CONTROL SAMPLE AND CONTROL SAMPLE DUPLICATE <br /> Reference Dupl <br /> Parameter Units MDL Value Recv Recv RPD <br /> PurgeaGle Fuels, as Gasoline (EPA 8015) ug/L 50 301 1037. 101% 1% <br /> Benzene ug/L 0 5 40 0 95% 108% 12% <br /> Toluene ug/L 0 5 40 0 94% 105% 11% <br /> Ethylbenzene ug/L 0 5 40 0 91% 98% 7% <br /> Xylenes, Total ug/L 0 5 80 0 94% 103% 9% <br />' MDL Method Detection Limit <br /> ND Not detected at or above the MDL <br />' RPD Relative Percent Difference <br /> 1 <br /> 1 <br /> • <br /> 11 Digital Drive Uffices Serving Minneapolis,Minnesota Charlotte North Carolina An Equal Opportunity Employer <br /> Novato CA 94949 Tampa Florida Asheirdle 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 />