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pN ,aceaAPpAATE [) ® REPORT OF LABORATORY ANALYSIS <br /> THE ASSURANCE OF OUAtITY <br /> to <br /> Mr James Jacobs QUALITY CONTROL DATA June 16, 1992 <br /> Page 18 PACE Project Number 420505525 <br /> Client Reference Exxon 7-3330 (C&M) <br /> Mercury (EPA Method 7471, Cold Vapor AA) <br /> Batch 70 13210 <br /> Samples 70 0159040 <br /> METHOD BLANK <br /> Method <br /> Parameter Units MDL Blank <br /> Mercury (EPA Method 7471, Cold Vapor AA mg/kg wet 0 02 ND <br /> LABORATORY CONTROL SAMPLE AND CONTROL SAMPLE DUPLICATE- <br /> Reference Dupl <br /> Parameter Units MDL Value Recv Recv RPD <br /> Mercury (EPA Method 7471 , Cold Vapor AA mg/kg wet 0 02 1 0 92% 95% 3% <br /> MDL Method Detection Limit <br /> Not detected at or above the MDL <br /> Relative Percent Difference <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 8836100 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 />