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GeoAnalytical Laboratories, Inc. <br />2300 Maryann Dr. Turlock, CA 95380 Phone (209) 669-0100 Fax (209) 593-2212 <br />email: infogeoanalyticallab.com <br />Report # 1-11K2315 Project: TA# 197523- Central Valley Ag Grinding <br />San Joaquin County Environmental Health <br />1868 East Haze1ton Ave <br />Stockton, CA 95205 <br />Inorganic Chemistry - Quality Control <br />GeoAnalytical Laboratories, Inc. <br />Date: 12/09/21 <br />Date Recd: 1 1/23/21 <br /> <br />Reporting Spike Source %REC RPD <br />AnaIsite Result Limit Units Level Result %REC Limits RPD Limit Notes <br />Batch 11003309 - 6020 - NONE Prepared: 11/24/21 Analyzed: 12/08/21 <br />LCS Dup (1-1003309-BSD1) <br />Antimony 2.91 0.5 mg/kg 3.125 93 80-120 3 20 <br />Arsenic 6.21 0.5 6.250 99 80-120 1 20 <br />13arium 11.4 0.5 ii 12.50 91 80-120 0.8 20 <br />13eryllitim 3.02 0.5 3.125 97 80-120 2 20 <br />Cadmium 6.01 0.5 6.250 96 80-120 0.002 20 <br />Chromium 11.8 0.5 12.50 95 80-120 0.5 20 <br />Cobalt 11.8 0.5 12.50 94 80-120 0.7 20 <br />Copper 11.9 0.5 12.50 95 80-120 0.1 20 <br />I.ead 12.2 1.0 12.50 98 80-120 0.2 20 <br />Molybdenum 2.99 0.2 U 3.125 96 80-120 0.4 20 <br />Nickel 12.3 0.5 12.50 98 80-120 0.5 20 <br />Selenium 6.12 0.5 6.250 98 80-120 2 20 <br />Silver 5.76 1.0 U 6.250 92 80-120 0.6 20 <br />Thallium 2.84 0.5 3.125 91 80-120 0.4 20 <br />Vanadium 6.03 0.5 6.250 96 80-120 0.5 20 <br />Zinc 12.4 0.5 12.50 99 80-120 0.1 20 <br />Mercury 0.59 0.5 U 0.6250 95 80-120 2 20 <br />Duplicate (H003309-DUPI) Source: H I K2315-02 <br />Antimony ND 0.5 mg/kg ND 20 <br />Arsenic 0.43 0.5 " 0.27 45 20 QR-03 <br />Barium 3.00 0.5 2.52 17 20 <br />Beryllium ND 0.5 ND 20 <br />Cadmium ND 0.5 U ND 20 <br />Chromium 0.30 0.5 U ND 20 <br />Cobalt 0.38 0.5 U 0.49 26 20 QR-03 <br />Copper 25.9 0.5 .. 13.5 63 20 QR-03 <br />lead 4.35 1.0 IF 2.14 68 20 QR-03 <br />Molybdenum 0.62 0.2 0.67 8 20 <br />Nickel 7.48 0.5 ii 10.8 37 20 QR-03 <br />Selenium ND 0.5 ND 20 <br />Silver ND 1.0 i, ND 20 <br />Thallium ND 0.5 ND 10 <br />Vanadium 7.69 0.5 U 10.6 32 20 QR-03 <br />tine 10.4 0.5 6.62 44 20 QR-03 <br />Nlercury ND 0.5 ND 20 <br />Certification # 2585