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' cb Curtis &Tompkins.Ltd. <br /> 'Batch QC Re or_ <br /> California Title 22 Metals <br /> id <br /> ' La Location: DVI-burn 1 <br /> Client: URS Corporation Prep: EPA 3050B <br /> Pro'ect#: DVI-BP Anal sis: EPA 6010B <br /> Fie ID: ZZZZZZZZZZ Batc1,7396 <br /> MSS Lab ID: 221391-013 Sampled: 04/16/11 <br /> Matrix: Soil Received: 04/19/11 <br /> Units: mg/Kg Prepared: 04/20/11 <br /> Basis: as received Analyzed: 04/23/11 <br /> Diln Fac: 1.000 <br /> Type: MS Lab ID: QC586503 <br /> MTHMV e MSS Result Spiked Result REC Limits <br /> Antimony 3.453 92 .59 47.17 47 7-120 <br /> Arsenic 2.489 46.30 46.42 95 66-122 <br /> Barium 81.53 92.59 176.4 102 51-135 <br /> Beryllium 0.4058 2.315 2.550 93 73-120 <br /> Cadmium 0.1038 9.259 9.222 98 64-120 <br /> Chromium 8.463 92.59 98.39 97 57-122 <br /> Cobalt 4.171 23.15 26.76 98 53-122 <br /> Copper 8.579 11.57 20.38 102 33-157 <br /> Lead 40.69 92.59 125.8 92 52-123 <br /> ' Molybdenum 0.2442 18 .52 15.79 84 66-120 <br /> Nickel 7.569 23.15 29.82 '96 42-137 <br /> Selenium 0.4464 46.30 45.75 98 64-120 <br /> Silver <0.07329 9.259 8.277 89 65-120 <br /> Thallium <0.1598 46.30 42.81 92 55-120 <br /> Vanadium 21.28 23.15 43.07 94 49-139 <br /> Zinc 31.73 23.15 55.51 103 32-155 <br /> 'Type: 14SD Lab ID: QC588504 <br /> Anal to Spiked Result oREC Limits ::RPD. Lim- <br /> Antimony 100.0 50 .81 47 -1 0 44 <br /> ' Arsenic 50.00 49.89 95 66-122 0 35 <br /> Barium 100.0 181.1 100 51-135 2 42 <br /> Beryllium 2.500 2.834 97 73-12D 4 22 <br /> Cadmium 10.00 9.936 98 64-120 0 36 <br /> Chromium 100.0 106.5 98 57-122 1 34 <br /> Cobalt 25.00 28.34 97 53-122 1 32 <br /> Copper 12.50 21.03 100 33-157 1 41 <br /> Lead 100.0 132.8 92 52-123 0 41 <br /> Molybdenum 20.00 17.30 85 66-120 2 20 <br /> ' Nickel 25.00 31.63 96 42-137 0 36 <br /> Selenium 50.00 49.31 98 64-120 0 28 <br /> Silver 10.00 9.026 90 65-120 1 27 <br /> Thallium 50.00 46.28 93 55-120 0 27 <br /> Vanadium 25.00 45.30 96 49-139 1 32 <br /> Zinc 25.00 57 .23 102 32-155 0 45 <br /> RPD= Relative Percent Difference <br /> Page 1 of 1 29.0 <br /> 1 <br /> 33 of 35 <br />