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'AnPOSITIVE 781 East Washington Blvd., Los Angeles, CA 90021 <br /> LAB SERVICE (21 3) 745-5312 FAX[213] 745-6372 <br /> Certificate of Analysis Page 20 of 21 <br /> File#:73101 <br /> Smith Emery Company GeoService [SF] Report Date: 04/18/19 <br /> 1940 Oakdale Avenue Submitted: 04/11/19 <br /> San Francisco,CA 94124 PLS Report No.: 1904116 <br /> Attn: Mr. Patrick Morrison Phone: (800) 675-8886 FAX:(415) 642-7055 <br /> Project: Seton Pacific RWC-MUUD-PHASE 1/71519-3 <br /> Quality Control Data <br /> Spike SoUrce; �%REC . RPD <br /> Analyte Result' PQL . -Units Level Result dp Limits - RPD Limit Qualifier <br /> Bach:BD91208-EFA 30508 <br /> Zinc 582 5.00 mg/kg 50.00 605 NR 75-125 V-3 <br /> Matrix Spike Dup Source:1904125-01 Prepared&Analyzed:04/12/19 <br /> Antimony 44.5 2.00 mg/kg 49.78 1.03 87.4 60-140 4.11 30 <br /> Arsenic 47.0 2.00 mg/kg 49.68 2.63 89.3 75-125 3.47 30 <br /> Barium 297 1.00 mg/kg 199.7 108 94.9 75-125 2.75 30 <br /> Beryllium 5.20 1.00 mg/kg 5.000 0.561 92.8 75-125 0.0188 30 <br /> Cadmium 7.12 1.00 mg/kg 4.990 2.13 100 75-125 0.360 30 <br /> Chromium 31.2 1.00 mg/kg 20.03 10.9 101 75-125 0.297 30 <br /> Cobalt 55.3 1.00 mg/kg 50.40 6.97 95.9 75-125 0.552 30 <br /> Copper 44.6 1.00 mg/kg 24.69 18.5 106 75-125 2.17 30 <br /> Lead 122 1.00 mg/kg 49.85 67.5 109 75-125 4.30 30 <br /> Molybdenum 43.4 1.00 mg/kg 49.77 0.483 86.1 75-125 4.46 30 <br /> Nickel 59.3 1.00 mg/kg 49.88 10.2 98.4 75-125 3.00 30 <br /> Selenium 42.9 2.00 mg/kg 49.22 No 87.1 75-125 6.51 30 <br /> Silver 4.53 1.00 mg/kg 4.960 ND 91.3 75-125 2.52 30 <br /> Thallium 40.6 2.00 mg/kg 49.88 ND 81.5 75-125 7.76 30 <br /> Vanadium 78.8 1.00 mg/kg 50.00 28.3 101 75-125 3.11 30 <br /> Zinc 644 5.00 mg/kg 50.00 605 77.8 75-125 NR 30 V-3 <br /> Batch <br /> D91209-EFA 7471A <br /> Blank Prepared&Analyzed:04/12/19 <br /> Mercury No 0.100 mg/kg <br /> LCS Prepared&Analyzed:04/12/19 <br /> Mercury 0.766 0.100 mg/kg 0.8392 91.3 80-120 <br /> Matrix Spike Source:1904125-01 Prepared&Analyzed:04/12/19 <br /> Mercury 0.980 0.100 mg/kg 0.8392 0.152 98.7 75-125 <br /> Matrix Spike Dup Source:1904125-01 Prepared&Analyzed:04/12/19 <br /> Mercury 0.898 0.100 mg/kg 0.8392 0.152 88.9 75-125 10.4 30 <br /> catch 81391723-» 7777 <br /> Duplicate Source:1904122-01 Prepared&Analyzed:04/16/19 <br /> pH 7.8 0.1 pH Units 7.8 0.128 5 <br />