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�.. .w <br /> CALIFORNIA LABORATORY SERVICES <br /> Page 5 of 7 03/23/07 11:34 <br /> KIFF Analytical Project: Tracy High School <br /> 2795 Second St.Suite 300 Project Number: DLT02.041 CLS Work Order#:CQC0608 <br /> Davis,CA 95616 Project Manager: Christie Dumas COC#:55413 <br /> Metals by EPA 6000/7000 Series Methods - Quality Control <br /> Reporting Spike Source %REC RPD <br /> Analyte Result Limit Units Level Result %REC Limits RPD Limit Notes <br /> Batch CQ02278-EPA 3010A <br /> Blank(CQ02278-BLK1) Prepared&Analyzed:03/19/07 <br /> Cadmium ND 20 µg2 <br /> Chromium ND 20 " <br /> Lead ND 50 " <br /> Nickel ND 20 " <br /> Zinc ND 20 <br /> LCS(CQ02278-BSI) Prepared&Analyzed:03/19/07 <br /> Cadmium 56.0 20 µg2 50.0 112 80-120 20 <br /> Chromium 206 20 200 103 80-120 20 <br /> Lead 519 50 500 104 80-120 20 <br /> Nickel 501 20 500 100 80-120 20 <br /> Zinc 519 20 500 104 80-120 20 <br /> LCS Dup(CQ02278-BSDI) Prepared&Analyzed:03/19/07 <br /> Cadmium 54.0 20 pg/L 50.0 108 80-120 3.64 20 <br /> Chromium 211 20 200 106 80-120 2.40 20 <br /> Lead 526 50 500 105 80-120 1.34 20 <br /> Nickel 506 20 500 101 80-120 0.993 20 <br /> Zinc 526 20 500 105 80-120 1.34 20 <br /> Matrix Spike(CQ02278-MSI) Source:CQC0632-01 Prepared&Analyzed:03/19/07 <br /> Cadmium 55.0 20 µg2 50.0 ND 110 75-125 25 <br /> Chromium 212 20 200 ND 106 75-125 25 <br /> Lead 516 50 500 ND 103 75-125 25 <br /> Nickel 535 20 500 23 102 75-125 25 <br /> Zinc 541 20 500 14 105 75-125 25 <br /> Matrix Spike Dup(CQ02278-MSD1) Source:CQC0632-01 Prepared&Analyzed:03/19/07 <br /> Cadmium 54.3 20 µg2 50.0 ND 109 75-125 1.28 25 <br /> Chromium 210 20 200 ND 105 75-125 0.948 25 <br /> Lead 514 50 500 ND 103 75-125 0.388 25 <br /> Nickel 529 20 500 23 101 75-125 1.13 25 <br /> Zinc 531 20 500 14 103 75-125 1.87 25 <br /> CA DOHS ELAP Accreditation/Registration Number 1233 <br /> 3249 Fitzgerald Road Rancho Cordova,CA 95742 www.californialab.com 916-638-7301 Fax: 916-638-4510 <br />