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California Department of Health Services HML Number: 911966 Hazardous Materials Laboratory to 91196£ Inorganic Section Quality Assurance Summary for ICP HML Soil QC Sample Method Calibration Verification Duplicate Spiked Sample HML No.: 911970 Matrix: SOIL Element mg/kg Blank Standard mg/L Spike Results mg/kg Unspiked Spike % Recovery Result Added found known % mg/L found known % A: B: RPD (mg/kg) (mg/kg) A: B: As-Arsenic 54.8 53.6 102 <0.04 10.1 10.0 101 478 469 1.90 <5.00 500 95.6 93.8 Ba-Barium 39.4 48.3 81.6 0.002 9.91 10.0 99.1 592 592 0.00 114 500 95.6 95.6 Be-Beryllium 26.0 27.0 96.3 <0.001 9.97 10.0 99.7 98.4 97.4 1.02 0.28 100 98.1 97.1 Cd-Cadmium 26.0 26.9 96.7 <0.004 10.1 10.0 101 485 481 0.83 1.81 500 96.6 95.8 Co-Cobalt 36.7 37.4 98.1 <0.02 10.2 10.0 102 486 483 0.63 5.81 500 96.0 95.4 Cr-Chromium 43.4 56.0 77.5 <0.03 10.2 10.0 102 489 491 0.42 13.8 500 95.0 95.4 Cu-Copper 40.4 40.2 100 <0.01 9.75 10.0 97.5 494 490 0.83 12.5 500 96.3 95.5 Mo-Molybdenum 44.6 43.3 103 <0.03 10.2 10.0 102 462 465 0.65 <3.75 500 92.4 93.0 Ni-Nickel 33.0 33.2 99.4 <0.03 10.0 10.0 100 491 486 1.04 9.09 500 96.4 95.4 Pb-Lead 53.9 55.8 96.6 <0.05 9.96 10.0 99.6 502 501 0.21 32.7 500 93.9 93.7 Se-Selenium 61.3 52.5 117 <0.08 10.1 10.0 101 506 503 0.00 <7.50 500 101 101 TI-Thallium 150 176 85.2 <0.15 9.94 10.0 99.4 435 428 1.62 <15.0 500 87.0 85.6 V-Vanadium 37.9 45.2 83.8 <0.03 9.77 10.0 97.7 503 501 0.42 28.1 500 95.0 94.6 Zn-Zinc 1 61.3 64.4 95.2 <0.01 10.0 10.0 100 534 510 4.94 36.5 500 99.5 94.7 HML Liquid QC Sample Reagent ERA Reference Standard Duplicate Spiked Sample HML No.: 912010 Matrix: LIQUID Element mg/kg Blank mg/L Spike Results mg/kg Unspiked Spike % Recovery Result Added found known % mg/L found known % A: B: RPD (mg/kg) (mg/kg) A: B: As-Arsenic 4.38 4.37 100 0.05 1.00 1.00 100 23.8 23.9 0.42 <0.20 25.0 95.2 95.6 Ba-Barium 7.40 7.36 100 0.05 0.97 1.00 97.0 23.8 23.7 0.42 0.15 25.0 94.6 94.2 Be-Beryllium 1.07 1.04 103 0.01 0.98 1.00 98.0 4.91 4.89 0.41 <0.01 5.00 98.2 97.8 Cd-Cadmium 4.50 4.27 105 0.04 1.03 1.00 103 25.0 1 25.0 0.00 <0.02 25.0 100 100 Co-Cobalt 4.97 4.77 104 0.04 1.03 1.00 103 24.6 24.6 0.00 <0.10 25.0 98.4 98.4 Cr-Chromium 5.05 4.94 102 <0.03 1.02 1.00 102 24.5 24.4 0.41 <0.15 25.0 98.0 97.6 Cu-Copper 12.4 12.6 98.4 0.03 0.95 1.00 95.0 23.9 23.8 0.42 0.14 25.0 95.0 94.6 Mo-Molybdenum 7.52 7.36 102 <0.03 1.02 1.00 102 24.4 24.4 0.00 <0.15 25.0 97.6 97.6 Ni-Nickel 34.3 33.8 102 0.04 1.01 1.00 101 24.8 24.8 0.00 <0.15 25.0 99.2 99.2 Pb-Lead 22.8 23.0 99.1 <0.05 1.00 1.00 100 24.9 24.7 0.81 <0.25 25.0 99.6 98.8 Se-Selenium 4.35 4.09 106 <0.08 0.99 1.00 99.0 24.7 24.5 0.81 <0.40 25.0 98.8 98.0 TI-Thallium 4.02 4.31 93.3 <0.15 1.01 1.00 101 23.8 23.9 0.42 <0.75 25.0 95.2 95.6 V-Vanadium 4.29 4.28 100 0.03 0.97 1.00 97.0 23.6 23.5 0.42 <0.13 25.0 94.4 94.0 Zn-Zinc 47.6 48.0 99.2 0.05 1.00 1.00 100 27.9 27.3 2.18 2.34 25.0, 102 99.8 ICP Analyst's Signature: Milad S. Iskander, Supervisor: Date: Chemist: Zenaida Odion Date Analyzed: 06/11/92