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GeoAnalytical Laboratories, Inc. p <br /> 1405 Kansas Avenue Modesto,CA 95351 Phone(209)572-0900 Fax (209)572-0916 m <br /> Report# Q078-08 QC REPORT p <br /> N <br /> N <br /> San Joaquin County Environmental Health N <br /> 304 E.Weber 3rd Floor <br /> Stockton CA 95202 <br /> N <br /> m <br /> to <br /> U1 <br /> AnalyteMethod Batch # Dates Analyzed Orig. Dupl. a/.Rec %Re RPD %MSD Rec Blank Comments N <br /> Antimony 7041 101588 03/24/04 97.6 98.7 " 1.1 ND Sample analyte concentration too high to spike. <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 601013 101591 03/24/04 111.8 114.0 1.9 1026 ND <br /> Cadmium 60106 101592 03/24/04 94A 96.3 " 20 ND Matrix interference(diluted out MS/MSD) <br /> Chromium 6010E 101593 03/24/04 108.6 110.5 ' 1.7 ND Sample analyte concentration too <br /> p Y high to spike. <br /> Cobalt 60106 I01594 03/24/04 <br /> 100.0 1012 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 60106 101596 03/24/04 706.9 107.4 0.5 ND Sample analyte concentration too high to spike. m <br /> Mercury 74734 101597 03/24)04 111.6 87.6 24.1 ND Matrix interfermce(diluted out MS/MSD) 0 <br /> Molybdenum 6010E 101598 03/24/04 7020 97.0 20 114.0 ND <br /> Nickel 601013 I01599 03/24/04 115.0 114.0 0.9 ND Sample analyte concentration too high to spike. <br /> Selenium 7740 101600 03/24/04 106.6 1032 3.0 1145 ND <br /> Silver 6010B I01601 03/24/04 113.7 116.3 2.2 112.5 ND <br /> lhallium 7841 101602 03/24/D4 10D.0 114.0 13.1 100.0 ND <br /> Vanadium 6010B 101603 03/24/04 98.0 100.0 2.0 ND Sample analyte concentration too high <br /> zinc 6010B 101604 03/24/04 to sp924 83.2 10.5 ND Sample ana <br /> amp lyte concentration too high to spike. <br /> *LCS/LCSD (see comments) <br /> D <br /> a) <br /> m <br /> Lo ohit om wala Donna Keller <br /> Inorganic Supervisor Certification # 1157 Laboratory Director ' <br />