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California Department of Toxic Substances Control HML Number: 960767 Hazardous Materials Laboratory to 960768 Inorganic Section Quality Assurance Summary for ICP HML Soil QC Sample Method Calibration Verification Duplicate Spiked Sample HML No.: Matrix: Elementmg/kg Blank Standard mg/L Spike Results mg/kg Unspiked Spike % Recovery Result Added found known % m /L found known % A: B: RPD A. 1B. (mg/kg) (mg/kg) As-Arsenic <0.04 10.2 10.0 102 Ba-Barium <0.002 10.2 10.0 102 Be-Beryllium <0.001 2.03 2.00 102 Cd-Cadmium 1 <0.004 10.3 10.0 103 Co-Cobalt <0.02 10.5 10.0 105 Cr-Chromium <0.03 10.2 10.0 102 Cu-Copper <0.010 10.3 10.0 103 Mo-Molybdenum <0.03 10.3 10.0 103 Ni-Nickel <0.03 10.4 10.0 104 Pb-Lead <0.05 10.5 10.0 105 Se-Selenium <0.08 10.4 10.0 104 TI-Thallium <0.15 10.2 10.0 102 V-Vanadium <0.03 10.1 10.0 101 Zn-Zinc 0.06 10.6 10.0 106 HML Liquid QC Sample Reagent Inorganic Ventures Duplicate Spiked Sample HML No.: 960767 Matrix: LIQUID Element Blank Reference Standard mg/kg mg/L Spike Results mg/kg Unspiked Spike % Recovery Result Added found known % found known % A: B: RPD m /L ImOtk(11 (mg/kg) A: B: As-Arsenic 3.00 3.01 99.7 <0.04 1.03 1.00 103 49.6 49.6 0.00 <0.40 50.0 99.2 99.2 Ba-Barium 3.13 3.01 104 <0.002 1.03 1.00 103 47.5 47.5 0.00 0.24 50.0 94.5 94.5 Be-Beryllium 0.65 0.85 100 <0.001 0.21 0.20 105 9.96 9.97 0.10 <0.01 10.0 99.6 99.7 Cd-Cadmium 2.19 2.47 88.7 <0.004 1.04 1.00 104 48.7 49.3 1.26 1.34 50.0 94.7 95.9 Co-Cobalt 2.32 2.43 95.5 <0.02 1.05 1.00 105 47.6 48.2 1.26 0.21 50.0 94.8 96.0 Cr-Chromium 4.92 1 5.39 91.3 <0.03 1.03 1 1.00 103 209 211 4.26 163 50.0 92.0 1 96.0 Cu-Copper 29.6 1 29.0 102 <0.010 1.05 1.00 105 80.7 80.5 0.41 31.9 50.0 97.6 97.2 Mo-Molybdenum 1.98 1.97 100 <0.03 0.99 1.00 99.0 47.8 48.2 0.83 <0.30 50.0 95.6 96.4 Ni-Nickel 4.64 4.96 93.5 <0.03 1.05 1.00 105 125 127 4.22 78.6 50.0 92.8 96.8 Pb-Lead 9.21 10.2 90.3 <0.05 1.05 1.00 105 47.7 48.4 1.46 <0.50 50.0 95.4 96.8 Se-Selenium 3.71 3.47 107 <0.08 1.04 1.00 104 1 51.4 51.7 0.00 <0.80 50.0 103 103 11 TI-Thallium 9.53 10.1 94.4 <0.15 1.02 1.00 102 46.5 47.1 1.28 <1.50 50.0 93.0 94.2 V-Vanadium 2.40 2.49 96.4 <0.03 1.02 1.00 102 46.2 46.6 0.86 1 <0.25 1 50.0 1 92.4 93.2 Zn-Zinc 50.1 57.1 87.7 <0.015 1.05 1.00 105 979 988 18.6 935 50.0 88.0 106 ICP Analyst's Signature: ,r,._��i Milad S. Iskander, Supervisor: Date: / �� Chemist: Atif R. Kozma hemist's ignature: Date Analyzed: 01/06/97