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0 <br /> A <br /> S np <br /> l E YiR RAA <br /> Krazan&Associates,Inc. Project: United Rentals <br /> 215 West Dakota Avenue Project Number: 1310141 Reported: <br /> Clovis CA,93612 Project Manager: Cody Taylor 05/10/10 09:24 <br /> Metals by EPA 6000/7000 Series Methods-Quality Control <br /> Sierra Analytical Labs,Inc. <br /> Reporting Spike Source 1/62EC RPD <br /> Analyte Result Limit Units Level Result %REC Limits RPD Limit Notes <br /> Batch BOE0407-EPA 3050B <br /> Blank(BOE0407-BLKI) Prepared&Analyzed:05/04/10 <br /> Cadmium ND 0.50 mg/kg <br /> Chromium ND 3.0 " <br /> Lead ND 3.0 " <br /> Nickel ND 4.0 " <br /> Zinc ND 10 " <br /> LCS(130E0407-BSI) Prepared&Analyzed:05/04/10 <br /> Cadmium 106 0.50 mg/kg 100 106 80-120 <br /> Chromium 107 3.0 100 107 80-120 <br /> Lead 108 3.0 100 108 80-120 <br /> Nickel 113 4.0 100 113 80-120 <br /> Zinc 105 10 100 105 78-122 <br /> LCS Dup(BOE0407-BSDI) Prepared&Analyzed:05/04/10 <br /> Cadmium 108 0.50 mg/kg 100 108 80-120 1.87 20 <br /> Chromium 108 3.0 100 108 80-120 0.930 20 <br /> Lead 111 3.0 100 Ill 80-120 2.74 20 <br /> Nickel 115 4.0 100 115 80-120 1.75 20 <br /> Zinc 105 10 100 105 78-122 0.00 20 <br /> Matrix Spike(BOE0407-MS1) Source:1004417-01 Prepared&Analyzed:05/04/10 <br /> Cadmium 95.5 0.50 mg/kg 96.3 0.25 98.9 70-130 <br /> Chromium 116 3.0 96.3 20 99.7 70-130 <br /> Lead 141 3.0 96.3 49 95.5 70-130 <br /> Nickel 112 4.0 96.3 15 101 70-130 <br /> Zinc 185 10 96.3 86 103 70-130 <br /> Matrix Spike Dup(BOE0407-MSD1) Source:1004417-01 Prepared&Analyzed:05/04/10 <br /> Cadmium 96.9 0.50 mg/kg 97.0 0.25 99.6 70-130 1.46 20 <br /> Chromium 116 3.0 P. 97.0 20 99.0 70-130 0.00 20 <br /> Lead 172 3.0 P. 97.0 49 127 70-130 19.8 30 <br /> Nickel 112 4.0 97.0 15 100 70-130 0.00 20 <br /> Zinc 191 10 97.0 86 108 70-130 3.19 20 <br /> The results in this report apply to the samples analyzed in accordance with the chain of cnstody document.This analytical report must be reproduced in its entirety. <br /> 26052 MERIT CIRCLE SUITE 105, LAGUNA HILLS,CALIFORNIA 92653 <br /> TELEPHONE: (949)348-9389 FAx: (949)348-9115 <br /> E-MAIL: SIERRAIABS @ SIERRALABS.NET Page 27 of 35 <br />