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GeoAnalytical Laboratories, Inc. <br /> 1405 Kansas Avenue Modesto,CA 95351 Phone(209) 572-0900 Fax(209)572-0916 <br /> Report# Q078-08 QC REPORT <br /> San Joaquin County Environmental Health <br /> 304 E.Weber 3rd Floor <br /> Stockton CA 95202 <br /> MS MSD LCS <br /> Analyte Method Batch # Dates Analyzed Orig. Dupl. %aRec %Rec RPD %aRec Blank Comments <br /> Antimony 7041 I01588 03/24/04 97.6 98.7 * 1.1 ND Sample analyte concentration too high t1 e. <br /> Arsenic 7060A I01589 03/24/04 92.8 92.0 * 0.9 ND Matrix interference(diluted out MS/MSD) <br /> Barium 6010B I01590 03/24/04 107.0 109.0 * 1.9 ND Sample analyte concentration too high to spike. <br /> Beryllium 6010B I01591 03/24/04 111.8 114.0 1.9 102.6 ND <br /> Cadmium 6010B I01592 03/24/04 94.4 96.3 * 2.0 ND Matrix interference(diluted out MS/MSD) <br /> Chromium 6010B I01593 03/24/04 108.6 110.5 * 1.7 ND Sample analyte concentration too high to spike. <br /> Cobalt 6010B 101594 03/24/04 100.0 101.2 * 1.2 ND Sample analyte concentration too high to spike. <br /> Copper 6010B I01595 03/24/04 86.0 87.5 * 1.7 ND Sample analyte concentration too high to spike. <br /> Lead 6010B I01596 03/24/04 106.9 107A * 0.5 ND Sample analyte concentration too high to spike. <br /> Mercury 7471A I01597 03/24/04 111.6 87.6 * 24.1 ND Matrix interference(diluted out MS/MSD) <br /> Molybdenum 6010B 101598 03/24/04 102.0 97.0 2.0 114.0 ND <br /> Nickel 6010B I01599 03/24/04 115.0 114.0 * 0.9 ND Sample analyte concentration too high to spike. <br /> Selenium 7740 I01600 03/24/04 106.6 103.2 3.0 114.5 ND <br /> Silver 6010B I01601 03/24/04 113.7 116.3 2.2 112.5 ND <br /> Thallium 7841 101602 03/24/04 100.0 114.0 13.1 100.0 ND <br /> Vanadium 6010B I01603 03/24/04 98.0 100.0 2.0 ND Sample analyte concentration too high t e. <br /> zinc 6010B I01604 03/24/04 92.4 83.2 10.5 ND Sample analyte concentration too high to spike. <br /> " LCS/LCSD (see comments) <br /> obit Bom ala Donna Keller <br /> Inorganic Supervisor Certification # 1157 Laboratory Director <br />