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Entech Analytical Labs, Inc. <br /> 3334 Victor Court , Santa Clara, CA 95054 Phone. (408) 588-0200 Fax: (408) 588-0201 <br />' Method Blank - Liquid - EPA 8020 - BTEX <br /> Batch ID. WGC051103 Validated by MaiChlTu-11/04/05 <br />' C Batch Analysis Date 11/3/2005 <br /> Parameter Result DF PQLR Units <br /> Benzene ND 1 0 50 Ng/L <br />' Ethyl Benzene ND 1 0 50 NgIL <br /> Toluene ND 1 0 50 NgIL <br /> Xylenes,Total ND 1 0 50 Ng/L <br />' Surrogate for Blank %Recovery Control Limits <br /> 4-Bromofluorobenzene 853 65 - 135 <br /> Laboratory Control Sample/ Duplicate - Liquid - EPA 8020 - BTEX <br /> QC Batch ID WGCO51103 Reviewed by MaiChi7u- 11/04105 <br /> QC Batch ID Analysis Date 1113/2005 <br />' LCS <br /> Parameter Method Blank Spike Amt SpikeResult Units %Recovery Recovery Limits <br /> Benzene <0 50 4 0 351 NgIL 87 8 65-135 <br />' Ethyl Benzene <0 50 4 0 352 NgIL 880 65-135 <br /> Toluene <0 50 4 0 3 61 NgIL 902 65-135 <br /> Xylenes,total <0 50 12 105 NgIL 87 8 65-135 <br /> Surrogate %Recovery Control Limits <br /> 4-Bromofluorobenzene 931 65 - 135 <br /> LCSD <br /> perameter Method Blank Spike Amt SpikeResult Units % Recovery RPD RPD Limits Recovery Limits <br /> nzene <0 50 40 312 Ng/L 780 12 250 65-135 <br /> Ethyl Benzene <0 50 40 316 Ng/L 790 11 250 65-135 <br />' Toluene <050 4 0 315 Ng/L 788 14 250 65-135 <br /> Xylenes,total <050 12 979 Ng/L 816 74 250 65-135 <br /> Surrogate %Recovery Control Limits <br /> 4-Bromofluorobenzene 106 65 - 135 <br /> r <br />' QCReport-ECunniffe 1114/2005 2 45 24 PM <br />