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California Department of Toxic Substances Control HML Number: 931081 Hazardous Materials Laboratory to 931G82 Inorganic Section Quality Assurance Summary for ICP HML Soil QC Sample Method Calibration Verification Duplicate Spiked Sample HML No.: 931080 Matrix: SOIL Blank Standard Element mg/kg mg/L Spike Results mg/kg Resplt ed Addke ed % Recovery found known % m /L found known % A: B: RPD (mg/kg) (mg/kg) A: B: As-Arsenic 57.5 59.9 96.0 <0.04 1 10.3 10.0 103 476 472 0.84 <5.00 500 95.2 94.4 Ba-Barium 39.7 39.9 99.5 0.003 9.47 10.0 94.7 575 591 3.27 93.2 500 96.4 99.6 Be-Beryllium 19.6 20.3 96.6 <0.001 9.72 10.0 97.2 101 100 1.00 <0.15 100 101 100 Cd-Cadmium 22.7 24.5 92.7 0.005 10.5 10.0 105 495 491 0.81 1.88 500 98.6 97.8 Co-Cobalt 18.2 19.0 95.8 <0.02 10.5 10.0 105 490 486 0.82 <2.50 500 98.0 97.2 Cr-Chromium 53.4 53.5 99.8 <0.03 10.2 10.0 102 500 503 0.62 18.1 500 96.4 97.0 Cu-Copper 29.9 31.0 96.5 <0.010 8.97 10.0 89.7 469 463 1.32 11.7 500 91.5 90.3 Mo-Molybdenum 26.5 26.5 100 <0.03 10.2 10.0 102 492 490 0.41 5.68 500 97.3 96.9 Ni-Nickel 31.0 33.5 92.5 <0.03 10.5 10.0 105 495 492 0.62 7.67 500 97.5 96.9 Pb-Lead 27.6 29.4 93.9 <0.05 10.3 10.0 103 512 522 2.10 40.3 500 94.3 96.3 Se-Selenium 68.5 64.9 106 <0.08 8.59 10.0 85.9 484 482 0.41 <7.50 500 96.8 96.4 TI-Thallium 91.9 108 85.1 <0.15 7.19 10.0 71.9 484 485 0.21 <15.0 500 96.8 97.0 V-Vanadium 35.0 33.9 103 <0.03 9.61 10.0 96.1 472 469 0.54 4.23 500 93.5 93.0 Zn-Zinc 40.0 43.6 91.7 0.016 10.4 10.0 104 586 592 1 1.22 99.1 500 97.4 98.6 HML Liquid QC Sample Reagent ERA Reference Standard Duplicate Spiked Sample HML No.: 931088 Matrix: LIQUID Blank Element mg/kg mg/L Spike Results mg/kg Unspiked Spike % Recovery Result Added found known % m /L found known % A: B: RPD (mg/kg) (mg/kg) A: B: As-Arsenic 1.81 2.07 87.4 <0.10 1.07 1.00 107 46.5 46.5 0.00 <0.40 50.0 93.0 93.0 Ba-Barium 0.83 0.92 90.2 <0.005 0.98 1.00 98.0 64.9 64.8 0.21 17.3 50.0 95.2 95.0 Be-Beryllium 0.85 0.91 93.4 <0.003 0.98 1.00 98.0 9.89 9.90 0.10 <0.01 10.0 98.9 99.0 Cd-Cadmium 0.86 1.01 85.1 <0.009 1.04 1.00 104 47.2 47.3 0.21 <0.04 50.0 94.4 94.6 1 Co-Cobalt 0.87 1 1.00 87.0 <0.05 1.05 1.00 105 52.5 52.6 0.21 5.08 50.0 94.8 95.0 Cr-Chromium 2.65 3.00 88.3 1 <0.08 1.03 1.00 103 48.0 48.1 0.21 <0.30 50.0 96.0 96.2 Cu-Copper 5.05 5.06 99.8 <0.05 0.97 1.00 97.0 47.3 47.2 0.21 0.11 50.0 94.4 94.2 Mo-Molybdenum 1.67 1.86 89.8 <0.08 1.03 1.00 103 47.8 48.2 0.83 <0.30 50.0 95.6 96.4 Ni-Nickel 5.96 6.78 87.9 <0.05 1.06 1.00 106 48.0 47.9 0.21 <0.30 50.0 96.0 95.8 Pb-Lead 4.19 4.83 86.7 <0.10 1.03 1.00 103 46.6 46.9 0.65 0.80 50.0 91.6 92.2 Se-Selenium 1.39 1.54 90.3 <0.15 0.85 1.00 85.0 50.0 49.4 1.21 <0.80 50.0 100 98.8 TI-Thallium 17.4 20.1 86.6 <0.30 0.74 1.00 74.0 48.5 48.3 0.41 <1.50 50.0 97.0 96.6 V Vanadium 2.53 2.73 92.7 <0.06 0.98 1.00 98.0 46.9 47.0 0.21 <0.25 50.0 93.8 94.0 Zn-Zinc 5.95 6.87 Q� 8�6.6 <0.05 1.04 1.00 104 78.4 78.4 0.00 31.8 50.0 93.2 93.2 ICP Analyst's Signature: >:-- ;{"°?(''""' C � Milad S. Iskander, Supervisor: Date: Chemist: Atif R. Kozmafi Chemist's gnature: Date Analyzed: 03/17/94