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a � <br /> T <br /> Alpha Analytical Laboratories, Inc: email: clientservices@alpha-labs.com <br /> Corporate: 208 Mason Street I Ukiah, CA 95482 1 T. 707-468-0401 1 F: 707-468-5267 1 FLAP# 1551 <br /> Intrinsic Transportation,Inc. Project Manager: Stuart Levang <br /> 3250A Dutton Ave. Project: Wash Rack Reported: <br /> Santa Rosa,CA 95407 Project Number: Holt of Calif-Pleasant Grove 05/09/19 11:58 <br /> Metals by EPA 6000/7000 Series Methods-Quality Control <br /> Reporting Spike Source %REC RPD <br /> Analyte(s) Result Limit Units Level Result %REC Limits RPD Limit Flag <br /> Batch AE93063-NB EPA 3050B <br /> LCS Dup(AE93063-BSDI) Prepared:05/01/19 Analyzed:05/06/19 <br /> Antimony 23.8 2.0 mg/kg 25.0 95.0 85-115 2.71 20 <br /> Arsenic 23.8 1.5 mg/kg 25.0 95.1 80-120 2.82 20 <br /> Barium 25.6 2.0 mg/kg 25.0 102 80-120 3.11 20 <br /> Beryllium 24.8 0.50 mg/kg 25.0 99.1 80-120 3.16 20 <br /> Cadmium 23.8 0.50 mg/kg 25.0 95.4 85-115 2.87 20 <br /> Chromium 25.6 1.5 mg/kg 25.0 102 80-120 2.81 20 <br /> Cobalt 25.4 2.0 mg/kg 25.0 102 80-120 3.26 20 <br /> Copper 26.3 2.0 mg/kg 25.0 105 80-120 3.05 20 <br /> Lead 24.8 5.0 mg/kg 25.0 99.1 80-120 2.43 20 <br /> Molybdenum 25.2 2.0 mg/kg 25.0 101 80-120 2.93 20 <br /> Nickel 25.3 5.0 mg/kg 25.0 101 80-120 2.70 20 <br /> Selenium 22.1 5.0 mg/kg 25.0 88.3 80-120 3.06 20 <br /> Silver 6.66 LO mg/kg 6.25 107 80-120 1.21 20 <br /> Thallium 25.1 5.0 mg/kg 25.0 100 80-120 3.56 20 <br /> Vanadium 25.2 2.0 mg/kg 25.0 101 80-120 3.02 20 <br /> Zinc 28.6 5.0 mg/kg 25.0 114 80-120 5.70 20 <br /> Matrix Spike(AE93063-MSI) Source:19D2833-01 Prepared:05/01/19 Analyzed:05/06/19 <br /> Antimony 10.8 2.0 mg/kg 24.4 ND 40.2 70-130 QM-01 <br /> Arsenic 26.2 1.5 mg/kg 24.4 1.80 100 60-140 <br /> Barium 110 2.0 mg/kg 24.4 97.7 50.4 60-140 QM-02 <br /> Beryllium 24.9 0.50 mg/kg 24.4 ND 101 60-140 <br /> Cadmium 23.1 0.50 mg/kg 24.4 ND 93.2 70-130 <br /> Chromium 61.5 1.5 mg/kg 24.4 27.9 138 60-140 <br /> Cobalt 31.4 2.0 mg/kg 24.4 8.12 95.6 60-140 <br /> Copper 53.6 2.0 mg/kg 24.4 26.3 112 60-140 <br /> Lead 26.5 5.0 mg/kg 24.4 5.00 88.2 60-140 <br /> Molybdenum 44.0 2.0 mg/kg 24.4 13.9 123 60-140 <br /> Nickel 55.9 5.0 mg/kg 24.4 23.8 132 60-140 <br /> Selenium 21.1 5.0 mg/kg 24.4 ND 86.6 60-140 <br /> Silver 6.11 1.0 mg/kg 6.10 ND 100 60-140 <br /> Thallium 22.4 5.0 mg/kg 24.4 ND 91.8 60-140 <br /> Vanadium 66.2 2.0 mg/kg 24.4 32.7 137 60-140 <br /> Zinc 79.9 5.0 mg/kg 24.4 45.9 139 60-140 <br /> The results in this report apply to the samples analyzed in accordance with the chain of custody document.This analytical report must be reproduced in its entirety. <br /> Page 6 of 12 <br />