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AUZ Laboratories, Inc. • • - • - • <br /> 2773 Downhill Drive Steamboat Springs, CO 80487 (800)334-5493 - • • <br /> Ensero Solutions ACZ Project ID: L70091 <br /> METHODACZ to WORKNUM PARAMETER QUAL DESCRIPTION <br /> L70091-01 NG532732 Cyanide,WAD SM4500-CN I,E-Colorimetric 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-Colorimetnc 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 /> WG533313 Nitrate/Ndnte 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(<1 Ox MDL). <br /> WG532928 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 /> WG532433 Residue,Filterable(TDS)@180C SM2540C N1 See Case Narrative. <br /> WG532423 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(<10x MDL) <br /> SM2540D Z3 Sample volume yielded a residue less than 2 5 mg <br /> WG533039 Sulfate D516-02/-07/-11- M3 The spike recovery value is unusable since the analyte <br /> TURBIDIMETRIC 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/-07/-11- RA Relative Percent Difference(RPD)was not used for data <br /> TURBIDIMETRIC validation because the concentration of the duplicated <br /> sample is too low for accurate evaluation(<lox MDL). <br /> L70091-02 VVG532732 Cyanide,WAD SM4500-CN I,E-Colorimetric 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-Colorimetnc 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 /> WG533313 Ntrate/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 /> WG532928 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(<lox MDL) <br /> WG532433 Residue,Filterable(TDS)@180C SM2540C N1 See Case Narrative <br /> WG532423 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(<10x MDL) <br /> SM2540D Z3 Sample volume yielded a residue less than 2 5 mg <br /> WG533039 Sulfate D516-02/-07/-11- M3 The spike recovery value is unusable since the analyte <br /> TURBIDIMETRIC 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/-07/-11- RA Relative Percent Difference(RPD)was not used for data <br /> TURBIDIMETRIC validation because the concentration of the duplicated <br /> sample is too low for accurate evaluation(<1 Ox MDL). <br /> WG532898 Zinc,dissolved M200.7 ICP 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 /> REPAD.15.06.05.01 <br /> L70091-2201271135 Page 13 of 23 <br />