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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 3010A <br /> Project#: ZION-2420-CA Analysis: EPA 6010B <br /> Matrix: Water Batch#: 207610 <br /> Units: ug/L Prepared: 01/31/14 <br /> Diln Fac: 1.000 Analyzed: 02/04/14 <br /> Type: BS Lab ID: QC726173 <br /> Analyte Spiked Result %REC Limits <br /> Arsenic 100.0 102.5 102 80-120 <br /> Barium 2,000 2,052 103 80-120 <br /> Cadmium 50.00 58.02 116 80-120 <br /> Chromium 200.0 211.6 106 80-120 <br /> Lead 100.0 107.3 107 80-120 <br /> Selenium 100.0 90.28 90 80-120 <br /> Silver 50.00 52.03 104 80-120 <br /> Type: BSD Lab ID: QC726174 <br /> Analyte Spiked Result %REC Limits RPD Lim <br /> Arsenic 100.0 104.6 105 80-120 2 20 <br /> Barium 2,000 2, 083 104 80-120 2 20 <br /> Cadmium 50.00 58.52 117 80-120 1 20 <br /> Chromium 200.0 214.6 107 80-120 1 20 <br /> Lead 100.0 106.6 107 80-120 1 20 <br /> Selenium 100.0 91.48 91 80-120 1 20 <br /> Silver 50.00 53.32 107 80-120 2 20 <br /> RPD= Relative Percent Difference <br /> Page 1 of 1 --" <br /> 94 of 121 <br />