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Batch QC Report cb Curtis &Tompkins Ltd <br /> ., <br /> Curtin Tompkins Laboratoriea ArialytiCal R,�,pQrt <br /> Lab ## 172884 Location SDHR-Carando <br /> Client Treadwell & Rollo Prep EPA 3010 <br /> Project## 2597 10 Analysis EPA 6010B <br /> Matrix Water Batch# 92076 <br /> Units ug/L Prepared 06/18/04 <br /> Diln Fac 1 000 Analyzed 06/21/04 <br /> Type BS Lab ID QC254649 <br /> Anajte eked <br /> Cadmium 50 00 53 80 108 80-120 <br /> Chromium 200 0 207 0 104 80-120 <br /> Copper 250 0 258 0 103 80-120 <br /> Lead 100 0 104 0 104 61-131 <br /> Nickel 500 0 518 0 104 <br /> a0-120 <br /> Zinc 500 0 531 0 106 80-120 <br /> Type BSD Lab ID QC254650 <br /> T <br /> Cadmium 50 00 55 80 112 80-120 4 20 <br /> Chromium 200 0 212 0 106 80-120 2 20 <br /> copp(_r 250 0 265 0 106 80-120 3 20 <br /> Iead 100 0 109 0 109 61-131 5 29 <br /> Nxckel 500 0 531 0 106 80-120 2 20 <br /> Zinc 500 0 546 0 109 80-120 3 20 <br /> RPD= Relative Percent Difference ' <br /> Page 1 of 1 <br /> z� o <br />