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CbCurtis&Tompkins,Lid. <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 /> Field ID: B-1W Batch#: 207610 <br /> MSS Lab ID: 252701-003 Sampled: 01/28/14 <br /> Matrix: Water Received: 01/29/14 <br /> Units: ug/L Prepared: 01/31/14 <br /> Diln Fac: 1.000 Analyzed: 02/04/14 <br /> Type: MS Lab ID: QC726175 <br /> Analyte MSS Result Spiked Result %REC Limits <br /> Arsenic 5.908 100.0 115.4 109 79-126 <br /> Barium 99.77 2,000 2,241 107 74-120 <br /> Cadmium <0.2854 50.00 59.67 119 76-122 <br /> Chromium 2.514 200.0 222.1 110 76-120 <br /> Lead <1.246 100.0 108.5 109 71-120 <br /> Selenium <1.347 100.0 85.64 86 71-127 <br /> Silver 1.105 50.00 55.37 109 58-128 <br /> Type: MSD Lab ID: QC726176 <br /> Analyte Spiked Result %REC Limits RPD Lim <br /> Arsenic 100.0 116.4 111 79-126 1 20 <br /> Barium 2,000 2,274 109 74-120 1 25 <br /> Cadmium 50.00 60.38 121 76-122 1 20 <br /> Chromium 200.0 224.5 111 76-120 1 20 <br /> Lead 100.0 108.9 109 71-120 0 20 <br /> Selenium 100.0 87.48 87 71-127 2 35 <br /> Silver 50.00 56.59 111 58-128 2 22 <br /> RPD= Relative Percent Difference <br /> Page 1 of 1 83.0 <br /> 95 of 121 <br />