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A CZ Laboratories, Inc. <br />2773 Downhill Dnve Steamboat Spnngs, CO 80487 (800) 334 -5493 <br />Star Mine Operations LLC ACZ Project ID: L16817 <br />ACZ ID WORKNUM PARAMETER <br />METHOD <br />QUAL <br />DESCRIPTION <br />L16817 -04 WG359586 Silica, total <br />M200.7 ICP <br />ZS <br />Digestion procedures have the potential to trigger silica <br />polymerization and precipitation, leading to low biased <br />results. Silica chemistry is complex and polymerization <br />kinetics are unpredictable. Dissolved and /or acid soluble <br />silica analyses may provide more accurate measurements. <br />WG359610 Silver, dissolved <br />M200.8 ICP -MS <br />M2 <br />Matrix spike recovery was low, the recovery of the <br />associated control sample (LCS or LFB) was acceptable. <br />M200 8 ICP -MS <br />ZA <br />Poor recovery for Silver quality control is accepted due to <br />low Silver solubility in samples, digestates, or extracts that <br />do not contain sufficient Hydrochloric aced. <br />WG359461 Cyanide, total <br />M335 4 - Colonmetnc w/ <br />RA <br />Relative Percent Difference (RPD) was not used for data <br />distillation <br />validation because the sample concentration is too low for <br />accurate evaluation (< 1 Ox MDL). <br />WG359569 Cyanide, WAD <br />SM4500 -CN I- Colonmetnc w/ <br />RA <br />Relative Percent Difference (RPD) was not used for data <br />distillation <br />validation because the sample concentration is too low for <br />accurate evaluation (< 1 Ox MDL). <br />WG359706 Nitrate /Nitnte as N <br />M353 2 - H2SO4 preserved <br />RA <br />Relative Percent Difference (RPD) was not used for data <br />validation because the sample concentration is too low for <br />accurate evaluation (< 1 Ox MDL). <br />WG359297 Phosphorus, ortho dissolved <br />M365.1 - Automated Ascorbic <br />RA <br />Relative Percent Difference (RPD) was not used for data <br />Acid <br />validation because the sample concentration is too low for <br />accurate evaluation (< 1 Ox MDL) <br />M365.1 - Automated Ascorbic <br />ZU <br />Analysis date /time preceeds filter date /time. A portion of <br />Acid <br />sample was filtered and analyzed prior to the creation of a <br />Filter workgroup. <br />WG359517 Residue, Non - Filterable (TSS) @105C <br />SM2540D <br />RA <br />Relative Percent Difference (RPD) was not used for data <br />validation because the sample concentration is too low for <br />accurate evaluation (< 1 Ox MDL). <br />WG359562 Sulfate <br />D516 -02 - Turbidimetric <br />M3 <br />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 />D516 -02 - Turbidimetric <br />ZU <br />Analysis date /time preceeds filter date /time. A portion of <br />sample was filtered and analyzed prior to the creation of a <br />Filter workgroup. <br />REPAD.15.06.05.01 <br />L16817- 1402281027 Page 44 of 49 <br />