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Superior Precision Analytical. Inc. <br /> 825 Arnold Drive, Suite 1 14 • Martinez, California 94553 • (510) 229-1512 /fax X510 229-1526 <br /> ANALYSIS FOR TOTAL LEAD <br /> Quality Assurance and Control Data - Soil <br /> Laboratory Number 15540 <br /> Method Spike <br /> Compound Blank RL Recovery Limits RPD <br /> (mg/Kg) (mg/Kg) M M M <br /> TOTAL LEAD: ND<5 5 80/83 75-125 4% <br /> Definitions : <br /> ND = Not Detected <br /> RPD = Relative Percent Difference <br /> RL = Reporting Limit <br /> mg/Kg = Parts per million (ppm) Senior Chemist <br /> QC File No. 15540 Account Manager <br /> Page 5 of 5 <br /> Certified Laboratories <br />