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AOZ Laboratories, Inc. • - - • - • <br /> 2773 Downhill Drive Steamboat Springs, CO 80487 (800)334-5493 (1 - • • <br /> Alexco Water&Environmental Inc. ACZ Project ID: L50182 <br /> METHODACZ ID WORKNUM PARAMETER QUAL DESCRIPTION <br /> L60182.01 NG467432 Antimony,dissolved M200 8 ICP-MS Q5 Sample received with inadequate chemical preservation. <br /> Additional preservation performed by the laboratory. <br /> Arsenic,dissolved M200 8 ICP-MS Q5 Sample received with inadequate chemical preservation. <br /> Additional preservation performed by the laboratory. <br /> WG467461 Cyanide,WAD SM4500-CN I,E-Colorimetnc w/ M2 Matrix spike recovery was low,the recovery of the <br /> distillation associated control sample(LCS or LFB)was acceptable <br /> SM4500-CN I,E-Colohmetric w/ RA Relative Percent Difference(RPD)was not used for data <br /> distillation validation because the concentration of the duplicated <br /> sample is too low for accurate evaluation(<1 Ox MDL) <br /> WG467432 Lead,dissolved M200 8 ICP-MS Q5 Sample received with inadequate chemical preservation. <br /> Additional preservation performed by the laboratory <br /> WG467383 Mercury,dissolved M245 1 CVAA Q5 Sample received with inadequate chemical preservation <br /> Additional preservation performed by the laboratory. <br /> WG467891 Nitrate/Nitrite as N M353 2-H2SO4 preserved RA Relative Percent Difference(RPD)was not used for data <br /> validation because the concentration of the duplicated <br /> sample is too low for accurate evaluation(<10x MDL) <br /> WG467632 Phosphorus,total M365 1-Auto Ascorbic Acid RA Relative Percent Difference(RPD)was not used for data <br /> (digest) validation because the concentration of the duplicated <br /> sample is too low for accurate evaluation(<1 Ox MDL) <br /> WG467177 Residue,Non-Filterable(TSS)@105C SM2540D RA Relative Percent Difference(RPD)was not used for data <br /> validation because the concentration of the duplicated <br /> sample is too low for accurate evaluation(<1 Ox MDL) <br /> WG467432 Silver,dissolved M200 8 ICP-MS Q5 Sample received with inadequate chemical preservation <br /> Additional preservation performed by the laboratory. <br /> WG467232 Sulfate D516-02/-07-Turbidimetnc M3 The spike recovery value is unusable since the analyte <br /> concentration in the sample is disproportionate to the spike <br /> level The recovery of the associated control sample(LCS <br /> or LFB)was acceptable <br /> WG467432 Thallium,dissolved M200 8 ICP-MS Q5 Sample received with inadequate chemical preservation. <br /> Additional preservation performed by the laboratory <br /> Uranium,dissolved M200.8 ICP-MS Q5 Sample received with inadequate chemical preservation. <br /> Additional preservation performed by the laboratory <br /> REPAD.15.06.05.01 <br /> L50182-1909231510 Page 22 of 31 <br />