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L Entech Analytical Labs, Inc. 1 <br /> 3334 Victor Court , Santa Clara, CA 95054 Phone: (408) 588-0200 Fax: (408) 588-0201 <br /> LCS/LCSD - Liquid - VOCs: EPA 5030C/EPA 8260B for Groundwater and Water =1 EPA 624 for <br /> Wastewater <br /> r QC Batch ID: WM7070228 Reviewed by: MaiChiTu-03/02/07 <br /> L QC Batch ID Analysis Date: 2/28/2007 <br /> LCS <br /> Parameter Method Blank Spike Amt SpikeResult Units %Recovery`` Recovery Limits <br /> 1,1-Dichloroethene <0.50 20 18.4 pg/L 92.0 70-130 <br /> Benzene <0.50 20 18.2 pg/L 91.0 70-130 <br /> Chlorobenzene <0.50 -.20 19.4 pg/L 97.0 70-130 <br /> Methyl-t-butyl Ether <1.0 20 18.1 Ng/L 90.5 70-130 <br /> Toluene <0.50 20 18.4 pg/L 92.0 70-130 <br /> Trichloroethene <0.50 20 19.2 pg/L 96.0 70-130 <br /> r Surrogate %Recovery Control Limits <br /> 4-Bromofluorobenzene 103.0 60 - 130 <br /> Ilrrrr Dibromofluoromethane 106.0 60 - 130 <br /> Toluene-d8 101.0 60 - 130 <br /> LCSD <br /> Parameter Method Blank. Spike Amt SpikeResult Units %Recovery RPD RPD Limits Recovery Limits <br /> 1,1-Dichloroethene <0.50 20 19.3 pg/L 96.5 4.8 25.0 70-130 <br /> Benzene <0.50 20 19.1 pg/L 95.5 .4.8 ..25.0 70-130 . <br /> Chlorobenzene <0.50 20 19.5 pg/L 97.5 0.51 25.0 70-130 <br /> Methyl-t-butyl Ether <1.0 20 18.5 pg/L 92.5 2.2 25.0 70-130 <br /> Toluene <0.50 20 19:3 <br /> pg/L , 96.5 4.8 25.0 70-130 <br /> Trichloroethene <0.50 20 20.4 pg/L 102 6.1 25.0 70-130 <br /> Surrogate %Recovery Control Limits <br /> 4-Bromofluorobenzene 101.0 60 - 130 <br /> Dibromofluoromethane 104.0 60 - 130 <br /> Toluene-d8 102.0 60 130 <br /> Yrl <br /> 'QCRepo't-ECunniffe-3/7/2007 6:55:54 PM <br />