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BSKANALYTICAL <br /> LABORATORIES <br /> QC Summary Report 09/16/2002 1111111 full IIIII Ilf II IIIII IlfllIIIII ilfll Illll IllflIII!/III <br /> BSK Subrmssion 2002090559 <br /> Client Caltest Analytical Laboratory <br /> I Date Submitted 09/11/2002 <br /> Project ID C090305 <br /> Project Desc <br /> BSK StarLims Run# 43052 iiiiiiii[iiiiiiiiiiiiillill[llilc Instrument ID _ <br /> Analyst Initials MARIAM Method Number CR6 IC <br /> Analyte Results Matrix %Rec Spike Spk Matrix <br /> Analyte QC Type Spike ID Result pmts or RPD RPD Cone Cone UCL LCL Date <br /> Chromium-Hexavalent(Cr+6) LCS N/A 191 µglL 95 2 ND 130 70 09/11/02 Acceptable <br /> Chromium-Hexavalent(Cr+-6) LCSD N/A 200 lig/l, 100 47 2 ND 130 70 09/11/02 Acceptable <br />' Chromium-Hexavalent(Cr+6) MS 247164 211 gglL 105 20 ND 130 70 09/11/02 Acceptable <br /> MS 247175 454 pg/L 106 4 030 130 70 09/11/02 Acceptable <br /> MS 247285 51 pg/L 109 4 070 130 70 09/11/02 Acceptable <br />' Chromium-Hexavalent(Cr+6) MSD 247164 217 lig/L 108 29 20 ND 130 70 09/11/02 acceptable <br /> MSD 247175 468 lig/L 109 3 4 030 130 70 09/11/02 Acceptable <br /> MSD 247285 51 pg/L 109 00 4 070 130 70 09/11/02 Acceptable <br /> ---.-------------------------------------- <br /> Chromium-Hexavalent(Cr+6) R13LK N/A 0 µg/L <10 1 0 N/A 09/11/02 Acceptable <br /> lie <br /> Approved by _ jig- 1 � <br /> 1 <br /> i <br />' %Rec Percent Recovered Parent Sample Sample used as background matrix for MS/MSD Page 1 of 1 <br /> RPD Relative Percent Difference OOS-High QC Result Above UCL. <br /> UCL Lipper Control Limit OOS-Low QC Result Below LCL <br /> LCL Lower Control Lumt <br />