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Entech Anal tical Labs Inc. <br /> 334 Victor Court , Santa Clara, CA 95054 Phone: (408) 588-0200 Fax: (408) 588-0201 <br /> Quality Control - Method Blank <br /> Liquid <br /> Validated by JHSIANG- 10/07/04 QC Batch ID WGC4041001 <br /> Analysis Date 10/1/2004 <br />' Method Blank Method• EPA 8020 <br /> Parameter Result DF PQLR Units <br /> Benzene ND 1 05 pg/L <br />' Ethyl Benzene ND 1 05 µg/L <br /> Toluene ND 1 05 µg/L <br /> Xylene,m+p ND i 1 µg/L <br /> Xylene,o ND 1 05 µg/L <br />' Xylenes,Total ND I 1 µg/L <br /> Surrogate for Blank %Recovery Control Limits <br /> 4-Bromofluorobenzene 101 65 - 135 <br /> 1 <br /> QCReport-Iglantz-10/1412004 12 04 49 AM <br />