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n superior Precision Analyrical Inc <br /> u825 Arnold Drive, Suite 1 14 Martinez, California 94553 (510) 229- 1512 / fax (510) 229- 1526 <br /> ANALYSIS FOR CAM 17 METALS <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 0 ) <br /> Antimony ( Sb ) : ND < 5 5 97 / 100 75 - 125 3 % <br /> Arsenic ( As ) : ND < l 1 112 / 120 75 - 125 7 % <br /> Barium ( Ba ) : ND < 5 5 97 / 99 75 - 125 2 % <br /> Beryllium ( Be ) : ND < 0 . 5 0 . 5 96 / 95 75 - 125 1 % <br /> Cadmium ( Cd ) : ND < 0 . 5 0 . 5 94 / 98 75 - 125 4 % <br /> Chromium ( Cr ) : ND < 5 5 92 / 94 75 - 125 2 % <br /> Cobalt ( Co ) : ND < 5 5 93 / 91 75 - 125 2 % <br /> Copper ( Cu ) : ND < 5 5 91 / 96 75 - 125 5 % <br /> Lead ( Pb ) : ND < 5 5 92 / 95 75 - 125 3 % <br /> Mercury ( Hg ) : ND < 0 . 05 0 . 05 89 / 96 75 - 125 8 % <br /> Molybdenum ( Mo ) : ND < 5 5 96 / 99 75 - 125 3 % <br /> Nickel ( Ni ) : ND < 5 5 95 / 98 75 - 125 3 % <br /> Selenium ( Se ) : ND < l 1 90 / 87 75 - 125 3 % <br /> Silver ( Ag ) : ND < 5 5 96 / 97 75 - 125 1 % <br /> Thallium ( T1 ) : ND < 5 5 91 / 106 75 - 125 15 % <br /> Vanadium ( V ) : ND < 5 5 92 / 100 75 - 125 8 % <br /> Zinc ( Zn ) : ND < 5 5 93 / 94 75 - 125 1 % <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 3 of 3 <br /> Certified laboratories <br />