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Superior Precision Anaiyticai, Inc_ <br /> 825 Arnold Drive Suite 1 14 ■ Martinez California 94553 ■ (510) 229-1512 /fax f5 10)9 22_9-1526 <br /> ANALYSIS FOR CADMIUM, CHROMIUM, LEAD, NICKEL, & ZINC <br /> _ - Quality Assurance and Control Data - Soil <br /> Laboratory Number 15043 <br /> Method Spike <br /> Compound Blank RL Recovery Limits RPD <br /> (mg/Kg) (mg/Kg) (%-) M (%-) <br /> Cadmium (Cd) : ND<0 5 0 5 99/100 75-125 101; <br /> Chromium (Cr) - ND<5 5 99/97 75-125 2% <br /> Lead (Pb) ND<5 5 109/105 75-125 3% <br /> Nickel (Na) . ND<5 5 102/101 75-125 14; <br /> Zinc (Zn) ND<5 5 99/95 75-125 4%- <br /> Definitions <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 . 15043 Account Manager <br /> Page 3 of 3 <br /> Certified Laboratories <br />