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AGZ Laboratories, Inc. <br />2773 Downhill Drive Steamboat Springs, CO 80487 (800J 334-5493 <br />Brown and Caldwell ACZ Project ID: L455O5 <br />.- 1 .. . , <br />L45505A7 WG171610 Calcium, dissolved M200.7 ICP M4 One spike recovery was outside of the method limits; the <br /> duplicate spike and the method control recoveries were <br /> within the method limits. <br />WG772045 Mercury, dissolved M1631, Atomic Fluorescence M4 One spike recovery was outside o/ the methotl limits; the <br /> duplicate spike and the method control recoveries were <br /> within the method limits. <br />WG171393 Residue, Filtemble (TDS) @1000 M160.1 -Gravimetric BA Target analyte detected in method blank at or above <br /> method reporting limit. Concentration found in the sample <br /> was 20 times above the concentretion found in the method <br /> blank. <br />WG772057 Sulfate M375.3 -Gravimetric RP, Relative Percent Di0erence (RPO) exceeded limit; sample <br /> concentrations are less than 10x the MDL. <br />L45505-02 WG171810 Calrbum, tlissolved M200.7 ICP M4 One spike recovery was outside of the method limits; the <br /> dupliwle spike and the method wntrol recoveries were <br /> within the method limits. <br />WG172045 Mercury, dissolved M1631, Atomic Fluorescence M4 One spike recovery was outside of the method limits; the <br /> duplicate spike and the method control recoveries were <br /> within the method limits. <br />WG771393 Residue, Filterable (TDS) @160C M160.1 - Gravimetric BA Target analyle detected in method blank at or above <br /> method reporting limit. Concentration found in the sample <br /> was 20 times above the concentration found in the method <br /> blank. <br />WG172057 Sulfate M375.3 -Gravimetric RA Relative Percent Di0erence (RPD) exceeded limit; sample <br /> concentrations are less than 10x the MDL. <br />L46505-03 WG172045 Mercury, dissolved M7631, Atomic Fluorescence MA One spike recovery was outside of the method limits; the <br /> duplicate spike antl the method control recoveries were <br /> within the method limits. <br />WG171393 Residue, Filterable (TDS) @180C M160.1 -Gravimetric BA Target analyte detected in method blank at or above <br /> method reporting limit. Concentration found in the sample <br /> was 20 times above the wncentration found in the method <br /> blank. <br />L45505-04 WG171810 Calcium, dissolved M200.7 ICP M4 One spike recovery was outside of the method limits; the <br /> duplicate spike and the method control recoveries were <br /> within the method limits. <br />WG172045 Mercury, dissolved M1631, Atomic Fluorescence M4 One spike recovery was outside of the method limits; the <br /> duplicate spike and the method control rewveries were <br /> within Ne method limits. <br />WG771990 Residue, Filterable (TDS) @180C M160.1 -Gravimetric Gi Confrmatory analysis was past holding time. <br />WG772057 Sulfate M375.3 - Grevimetric RA Relative Percent DiRerence (RPD) exceeded limit sample <br /> concentrations are less than 10x the MDL. <br />L46605-05 WG171810 Calcium, dissolved M200.7 ICP AM One spike recovery was outside of the method limits; the <br /> duplicate spike and the method control recoveries were <br /> within the methotl limits. <br />WG772045 Mercury, dissolved M1631, Atomic Fluorescence M4 One spike recovery was outside of the method limits; the <br /> duplicate spike and the method control recoveries were <br /> within the method limits. <br />WG171393 Residue, Filterable (TDS) @180C M160.1 -Gravimetric BA Target analyte detected in method blank at or above <br /> method reporting limit. Concentration found in the sample <br /> was 20 times above the concentretion found in the method <br /> blank. <br />WG172057 Sulfate M375.3 -Gravimetric R4 Relative Percent Di0erence (RPD) exceeded limit; sample <br /> concentrations are less than 10x the MDL. <br />EXTQUAL.11.20.02.01 <br />L45505: Page 26 of 35 <br />