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= = = V = = = M M = <br /> QA/QC Report <br /> Blank Spike/Duplicate Blank Spike Summary <br /> Sherwood Labs Corporation, Hilmar, CA <br /> Lab Report No H2O91706 Date 09/23/2002 Page 15 <br /> QC Batch SWA092102 <br /> Matrix Water <br /> Lab Samp ID BWA092102 <br /> Acceptance <br /> Analysts Spike Level Spike Result % Recoveries Criteria <br /> Analyte Method LCS LCD LCS LCD Units LCS LCD RPD %Rec RPD <br /> Benzene SW8020F 372 NA 292 NA UGIL 785 NA NA 130-70 LSA NA <br /> Ethylbenzene SW802OF 869 NA 797 NA UGIL 91 7 NA NA 130-70 LSA NA <br /> Gasoline SW802OF 637 NA 595 NA UGIL 934 NA NA 130-70 LSA NA <br /> Methyl-lert-butyl ether(MTBE) SW802OF 43 64 NA 4967 NA UGIL 114 NA NA 130-70 LSA NA <br /> Toluene SW8020F 3159 NA 2625 NA UGIL 831 NA NA 130-70 LSA NA <br /> Xylenes SW802OF 48 65 NA 4515 NA UGIL 928 NA NA 130-70 LSA NA <br /> 4-Bromofluorobenzene SW8020F 100 NA 115 NA PERCENT 115 NA NA 130-70 SMSA NA <br /> Chlorobenzene SW8020F 100 NA 160 NA PERCENT 1601 NA NA 130-70 SMEA NA <br /> EW Surr recovery outside of acceptance limits,spike recov accept <br />� li <br />