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GeoAnalytical Laboratories, Inc. <br /> 1405 Kansas Avenue Modesto,CA 95351 Phone (209) 572-0900 Fax (209) 572-0916 A1 ! <br /> Report# P211-19 QC REPORT r ,T ` f"F3VICr. <br /> 03 AUG -1 PM 4: 33 <br /> San Joaquin County Environmental Health <br /> 304 E.Weber 3rd Floor <br /> Stockton CA 95202 <br /> MS MSD LCS <br /> Aalyle Method Batch # Dates Analyzed Orig. Dupl. %Rec %Rec RPD %Rec Blank Comments <br /> lony 7041 I05281 8/01/03 108.0 99.4 6.5 97.0 ND <br /> Arsenic 7060A I05294 8/01/03 110.2 89.4 11.1 99.4 ND <br /> Barium 6010B I05282 8/01/03 92.0 103.0 * 11.3 ND Sample analyte concentration too high to spike. <br /> Beryllium 6010B I05283 8/01/03 112.0 108.6 3.1 91.4 ND <br /> Cadmium 6010B I05284 8/01/03 98.8 99.4 * 0.6 ND Sample analyte concentration too high to spike. <br /> Chromium 6010B I05285 8/01/03 103.4 114.8 * 10.4 ND Sample analyte concentration too high to spike. <br /> Cobalt 6010B 105286 8/01/03 102.8 105.6 * 2.7 ND Sample analyte concentration too high to spike. <br /> Copper 6010B I05287 8/01/03 86.6 89.8 * 3.6 ND Sample analyte concentration too high to spike. <br /> Lead 6010B I05288 8/01/03 106.8 118.0 * 10.0 ND Sample analyte concentration too high to spike. <br /> Mercury 7471A I05295 8/01/03 115.2 117.6 * 2.1 ND Matrix interference(diluted out MS/MSD) <br /> Molybdenum 6010B I05289 8/01/03 118.6 103.2 8.6 95.2 ND <br /> Nickel 6010B 105290 8/01/03 95.2 102.6 * 7.5 ND Sample analyte concentration too high to spike. <br /> Selenium 7740 I05296 8/01/03 107.1 104.8 2.2 105.0 ND <br /> Silver 6010B I05291 8/01/03 106.8 107.8 * 0.9 ND Sample analyte concentration too high to spike. <br /> m 7841 I05297 8/01/03 114.4 110.0 * 3.9 ND Matrix interference(diluted out MS/MSD) <br /> V�_ um 6010B I05292 8/01/03 110.5 107.8 1.0 98.4 ND <br /> Zinc 6010B I05293 8/01/03 96.0 108.8 * 12.5 ND Sample analyte concentration too high to spike. <br /> *LCS/LCSD (see comm /,� <br /> n ti <br /> i Bom ala Donna Keller <br /> Inorganic Supervisor Certification # 1157 Laboratory Director <br />