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Entech Analytical <br />Labs, <br />3334 Victor rurt, Santa Clara, CA 95054 Phone:1:) 588-0200 f8) 588-020 <br />LCS / LCSD - Liquid - VOCs: EPA 5030B / EPA 8260B <br />QC Batch ID: WM2D070927D <br />QC Batch ID Analysis Date: 9/27/2007 <br />LCS <br />Reviewed by: MaiChiTu - 09/28/07 <br />Parameter <br />Method Blank Spike Amt SpikeResult <br />Units <br />%r Recovery <br />104.0 <br />60 - 130 <br />Recovery Limits <br />1,1-Dichloroethene <br />0.0 <br />20 <br />18.0 <br />lag/L <br />90.0 <br />70-130 <br />Benzene <br /><0.50 <br />20 <br />19.5 <br />lag/L <br />97.5 <br />Control Limits <br />4-Bromofluorobenzene <br />70-130 <br />Chlorobenzene <br />0.0 <br />20 <br />19.5 <br />lag/L <br />97.5 <br />60 - 130 <br />70-130 <br />Methyl -t -butyl Ether <br /><1.0 <br />20 <br />23.8 <br />lag/L <br />119 <br />70-130 <br />Toluene <br /><0.50 <br />20 <br />19.1 <br />lag/L <br />95.5 <br />70-130 <br />Trichloroethene <br />0.0 <br />20 <br />21.1 <br />lag/L <br />106 <br />70-130 <br />Surrogate <br />% Recovery <br />Control Limits <br />4-Bromofluorobenzene <br />107.0 <br />60 130 <br />Dibromofluoromethane <br />94.0 <br />60 - 130 <br />Toluene -d8 <br />99.3 <br />60 - 130 <br />LCSD <br />Parameter <br />Method Blank Spike Amt SpikeResult <br />Units <br />%r Recovery <br />RPD <br />RPD Limits <br />Recovery Limits <br />1,1-Dichloroethene <br />0.0 <br />20 <br />18.7 <br />lag/L <br />93.5 <br />3.8 <br />25.0 <br />70-130 <br />Benzene <br /><0.50 <br />20 <br />20.9 <br />lag/L <br />104 <br />6.9 <br />25.0 <br />70-130 <br />Chlorobenzene <br />0.0 <br />20 <br />21.1 <br />lag/L <br />106 <br />7.9 <br />25.0 <br />70-130 <br />Methyl -t -butyl Ether <br /><1.0 <br />20 <br />24.7 <br />lag/L <br />124 <br />3.7 <br />25.0 <br />70-130 <br />Toluene <br /><0.50 <br />20 <br />20.5 <br />lag/L <br />102 <br />7.1 <br />25.0 <br />70-130 <br />Trichloroethene <br />0.0 <br />20 <br />23.0 <br />lag/L <br />115 <br />8.6 <br />25.0 <br />70-130 <br />Surrogate <br />% Recovery <br />Control Limits <br />4-Bromofluorobenzene <br />107.0 <br />60 130 <br />Dibromofluoromethane <br />92.1 <br />60 - 130 <br />Toluene -d8 <br />98.3 <br />60 - 130 <br />LCS / LCSD - Liquid - TPH-Purgeable - GUMS: EPA 5030B / GC/MS <br />QC Batch ID: WM2D070927D <br />QC Batch ID Analysis Date: 9/27/2007 <br />LCS <br />Parameter <br />TPH as Gasoline <br />Method Blank Spike Amt SpikeResult Units %r Recovery <br /><25 250 276 lag/L 110 <br />Reviewed by: MaiChiTu - 09/28/07 <br />Recovery Limits <br />65-135 <br />Surrogate <br />% Recovery <br />Control Limits <br />4-Bromofluorobenzcne <br />104.0 <br />60 - 130 <br />Dibromofluoromethane <br />103.0 <br />60 - 130 <br />Toluene -d8 <br />97.1 <br />60 - 130 <br />LCSD <br />Parameter <br />Method Blank Spike Amt SpikeResult Units % Recovery RPD RPD Limits Recovery Limits <br />TPH as Gasoline <br /><25 <br />250 278 lag/L 111 0.72 25.0 65-135 <br />Surrogate <br />% Recovery <br />Control Limits <br />4-Bromofluorobenzene <br />103.0 <br />60 - 130 <br />Dibromofluoromethane <br />102.0 <br />60 - 130 <br />Toluene -d8 <br />97.3 <br />60 - 130 <br />