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California Department of Toxic Substances Control HML Number: 01139:1 _ Hazardous Materials Laboratory to 011398 Inorganic Section Quality Assurance Summary for ICP HML Soil QC Sample Method Calibration Verification Duplicate Spiked Sample HML No.: 011394 Matrix: PLaSTIG Blank Standard BUMPER mg/kg mg/L POWDE R Element /L Spike Results mg/kg Unspiked Spike % Recovery m g Result Added found known % found known % A: B: RPD (mg/kg) (mg/kg) A: B: As-Arsenic 62.0 68.2 90.9 <0.10 9.78 10.0 97.8 449 450 0.22 <5.00 500 89.8 90.0 Ba-Barium 49.4 50.6 97.6 <0.010 9.71 10.0 97.1 4656 4989 110 4520 500 97.2- 93 Be-Beryllium 3.98 4.11 96.8 <0.005 1.95 2.00 1 97.5 101 100 1.00 <0.25 100 101 100 Cd-Cadmium 18.3 19.3 94.8 <0.010 10.1 10.0 101 457 458 0.33 0.77 500 91.2 91.5 Co-Cobalt 21.1 21.9 96.3 <0.05 10.1 10.0 101 473 475 0.43 11.3 500 92.3 92.7 Cr-Chromium 24.5 25.7 95.3 <0.08 9.85 10.0 98.5 510 511 0.22 52.8 500 91.4 91.6 Cu-Copper 118 124 95.2 <0.10 9.36 10.0 93.6 778 859 16.1 310 500 93.6 110 Mo-Molybdenum 16.8 18.0 93.3 <0.10 9.80 10.0 98.0 450 452 0.45 8.59 500 88.3 88.7 Ni-Nickel 23.8 24.0 99.2 <0.05 10.2 10.0 102 2601 2571 5.71 2062 500 108 102 Pb-Lead 24.1 27.1 88.9 <0.10 110.1 10.0 101 470 473 0.68 28.3 500 88.3 88.9 Se-Selenium 59.6 67.0 89.0 <0.15 9.68 10.0 96.8 498 500 0.40 <7.50 500 99.6 100 TI-Thallium 1 76.6 88.4 86.7 <0.20 10.1 10.0 101 430 432 0.46 <10.0 500 86.0 86.4 V-Vanadium 38.7 38.6 100 <0.06 9.52 10.0 95.2 463 465 0.44 12.9 500 90.0 90.4 Zn-Zinc 127 141 90.1 <0.10 10.4 10.0 104 2361 2351 2.59 1970 500 78.2 76.2 HML Liquid QC Sample Reagent Inorganic Ventures Duplicate Spiked Sample HML No.: 011399 Matrix: LIQUID ElementBlank Reference Standard Spike Results mg/kg Unspiked Spike % Recovery mg/kg mg/L Result Added found known % m /L found known % A: B: RPD (mg/kg) (mg/kg) A: B: As-Arsenic 2.54 2.63 96.6 <0.10 1.01 1.00 101 236 238 0.84 <5.00 250 1 94.4 95.2 Ba-Barium 9.68 9.92 97.6 <0.010 10.97 1.00 97.0 235 235 0.00 0.91 250 93.6 93.6 Be-Beryllium 2.89 2.97 97.3 <0.005 0.19 0.20 95.0 50.5 50.5 0.00 <0.25 50.0 101 101 Cd-Cadmium 3.08 3.10 99.4 <0.010 1.01 1.00 101 239 240 0.42 <0.50 250 95.6 96.0 Co-Cobalt 2.65 2.66 99.6 <0.05 0.99 1.00 99.0 238 240 0.84 <2.50 250 95.2 96.0 Cr-Chromium 15.0 15.0 100 <0.08 0.98 1.00 98.0 237 238 0.42 <4.00 250 94.8 95.2 Cu-Copper 65.3 66.1 98.8 <0.10 0.93 1.00 93.0 273 273 0.00 42.4 250 92.2 92.2 Mo-Molybdenum 6.20 6.36 97.5 <0.10 0.99 1.00 99.0 238 240 0.86 6.93 250 92.4 93.2 Ni-Nickel 11.8 11.7 101 <0.05 1.00 1.00 100 247 249 0.85 13.3 250 93.5 94.3 Pb-Lead 6.43 6.18 104 <0.10 1.01 1.00 101 244 246 0.88 17.4 250 90.6 91.4 Se-Selenium 13.9 14.1 98.6 <0.15 0.97 1.00 97.0 278 280 0.90 <7.50 250 111 112 TI-Thallium 34.5 34.5 100 <0.20 0.99 1.00 99.0 230 230 0.00 <10.0 250 92.0 92.0 V Vanadium 2.27 2.33 97.4 <0.06 0.95 1.00 95.0 226 226 0.00 3.00 250 90.4 90.4 Zn Zinc 24.6 24.4 101 <0.10 1.01 1.00 101 705 713 3. 70 2 0 94.0 97.2 ICP Analyst's Signature: t - - Iskander, Supervisor: Q- - Chemist: Fatima Hussath Chemist' -Signature: -<-L Date Analyzed: 06/19/02