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I N C O R P O R A T E D ® REPORT OF LABORATORY ANALYSIS <br /> THE ASSURANCE OF QUALITY <br /> kerJames Jacobs QUALITY CONTROL DATA April 21 , 1992 <br /> Page 15 PACE Project Number 420413507 <br /> Client Reference- Exxon 7-3330 <br /> Lead (EPA Method 6010/200 7, ICP) <br /> Batch. 70 11667 <br /> Samples 70 0077443, 70 0077451 <br /> METHOD BLANK <br /> Method <br /> Parameter Units MDL Blank <br /> Lead Method 6010/200 7, ICP) mg/L 0 1 ND <br /> LABORATORY CONTROL SAMPLE AND CONTROL SAMPLE DUPLICATE <br /> Reference Dupl <br /> Parameter Units MDL Value Recv Recv RPD <br /> Lead (EPAMethod 6010/200 7, ICP) mg/L 0 1 1 0 105% 97% 7% <br /> MDL Method Detection Limit <br /> I* Relative Percent Difference <br /> Do <br /> 11 Digital Drive Offices Serving Minneapolis Minnesota Charlotte North Carolina An Equal Opportunity Employer <br /> Novato CA 94949 Tamps,Florida Asheville North Carolina <br /> TEL 415 883 8100 Iowa City,Iowa New York,New York <br /> FAX 415 883 2813 San Francisco California Pittsburgh Pennsylvania <br /> Kansas City Missouri Denver Colorado <br /> Los Angeles California <br />