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CbCurtis&Tompkins.Ltd. <br /> Batch QC Report <br /> RCRA Metals <br /> Lab #: 252701 Location: Tim valentine <br /> Client: EarthTouch Prep: EPA 3050E <br /> Project#: ZION-2420-CA Analysis: EPA 6010B <br /> Matrix: Soil Batch#: 207700 <br /> Units: mg/Kg Prepared: 02/04/14 <br /> Diln Fac: 1.000 Analyzed: 02/04/14 <br /> Type: BS Lab ID: QCV26564 <br /> Analyte Spiked Result %REC Limits <br /> Arsenic 50.00 48.82 98 80-120 <br /> Barium 100.0 97.42 97 80-120 <br /> Cadmium 10.00 9.957 100 80-120 <br /> Chromium 100.0 96.16 96 80-120 <br /> Lead - 100.0 95.55 96 80-120 <br /> Selenium 50.00 47.28 95 80-120 <br /> Silver 10.00 9.327 93 80-120 <br /> Type: BSD Lab ID: QC726565 <br /> Analyte Spiked Result %REC Limits RPD Lim <br /> Arsenic 50.00 50.61 101 80-120 4 20 <br /> Barium 100.0 100.8 101 80-120 3 20 <br /> Cadmium 10.00 10.30 103 80-120 3 20 <br /> Chromium 100.0 100.4 100 80-120 4 20 <br /> Lead 100.0 98.89 99 80-120 3 20 <br /> Selenium 50.00 49.34 99 80-120 4 20 <br /> Silver 10.00 9.704 97 80-120 4 20 <br /> RPD= Relative Percent Difference <br /> 85.0 <br /> Page 1 of 1 <br /> 120 of 121 <br />