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Superior Pre ion Ana/yt/ca/. Inc. <br /> 825 Arnold Drive, Suite 114 Martinez, California 94553 • )510) 229-1512 /fax (510) 229-1526 <br /> ANALYSIS FOR TOTAL LEAD <br /> Quality Assurance and Control Data - Water <br /> Laboratory Number 15540 <br /> Method Spike <br /> Compound Blank RL Recovery Limits RPD <br /> (mg/L) (mg/L) (%) M (%) <br /> TOTAL LEAD: ND<0. 1 0 . 1 102/89 75-125 14% <br /> Definitions : <br /> ND = Not Detected <br /> RPD = Relative Percent Difference <br /> RL = Reporting Limit <br /> mg/L = Parts per million (ppm) <br /> QC File No. 15540 <br /> Page 4 of 5 <br /> Certified Laboratories <br />