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ACZ Laboratories, Inc. <br />2773 Downhill Drive Steamboat Springs, CO 80487 (800) 334-5493 <br />Natural Soda, Inc. ACZ Project ID: L85860 <br />ACZ ID WORKNUM PARAMETER METHOD <br />QUAL <br />DESCRIPTION <br /> <br />L85860-02 WG295064 Total Hot Plate Digestion M200.2 ICP DA Sample required dilution due to reactivity. <br />WG295112 M200.2 ICP-MS DA Sample required dilution due to reactivity. <br />WG295230 Aluminum, total M200.7 ICP M1 Matrix spike recovery was high, the recovery of the <br /> associated control sample (LCS or LFB) was acceptable. <br />Iron, total M200.7 ICP MA Recoveryfor either the spike or spike duplicate was outside <br /> of the acceptance limits; the RPD was within the <br /> acceptance limits. <br />WG295261 Mercury, total M245.1 CVAA DA Sample required dilution due to reactivity. <br />WG295263 Silica, total M200.7 ICP M2 Matrix spike recovery was low, the recovery of the <br /> associated control sample (LCS or LFB) was acceptable. <br /> M200.7 ICP ZS 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 />WG294945 Bromide M300.0 - Ion Chromatography D1 Sample required dilution due to matrix. <br /> M300.0 - Ion Chromatography RA Relative Percent Difference (RPD) was not used for data <br /> validation because the sample concentration is too low for <br /> accurate evaluation (< 1Ox MDL). <br />WG295337 Carbon, total organic (TOC) SM5310B DA Sample required dilution due to reactivity. <br />WG295414 Chloride SM45000I-E D1 Sample required dilution due to matrix. <br /> SM45000I-E DH Sample required dilution due to high TDS and/or EC value. <br />WG295445 Nitrate/Nitrite as N M353.2 - H2SO4 preserved DA Sample required dilution due to reactivity. <br />WG294866 Phosphorus, ortho dissolved M365.1 - Automated Ascorbic RA Relative Percent Difference (RPD) was not used for data <br /> Acid validation because the sample concentration is too low for <br /> accurate evaluation (< 1Ox MDL). <br />WG295155 Phosphorus, total M365.1 -Auto Ascorbic Acid M3 The spike recovery value is unusable since the analyte <br /> (digest) 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 />WG295090 Residue, Filterable (TDS) @180C SM2540C ZO Concentration is based on a final residue greater than 200 <br /> Mg. <br />WG295451 Sulfate D516-02 - Turbidimetric D1 Sample required dilution due to matrix. <br /> D516-02 - Turbidimetric DH Sample required dilution due to high TDS and/or EC value. <br /> D516-02 - Turbidimetric M2 Matrix spike recovery was low, the recovery of the <br /> associated control sample (LCS or LFB) was acceptable. <br />WG295002 Sulfide as S 376.2 - Methylene Blue DA Sample required dilution due to reactivity. <br /> 376.2 - Methylene Blue RA Relative Percent Difference (RPD) was not used for data <br /> validation because the sample concentration is too low for <br /> accurate evaluation (< 1Ox MDL). <br />REPAD.15.06.05.01 <br />Page 23 of 40 <br />