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IE�wtech Analytical Labs Inc. <br /> 3334 Victor Court , Santa Clara, CA 95054 Phone: (408) 588-0200 Fax: (408) 588-0201 <br />' ERM-West,Inc-WC Date Received 10/27/2005 1 59 08 PM <br /> 1777 Botelho Drive,Suite 260 Project ID Former Hemz Facility <br /> Walnut Creek,CA 94596 <br />' Attn Brian Bjorklund Project Name 757 E 11th St <br /> Certificate of Analysis - Data Report P O Number 051026-RCI <br /> Sample Collected by Client <br /> ab# • 45996-005 Sample ID DUP Matrix Liquid Sample Date 10/26/2005 <br /> PA 5030C EPA 8015 MOD (Purgeable) TPH as Gasoline <br /> arameter Result Qual D/P-F Detection Limit Units Prep Date Prep Batch Analysis Date QC Batch <br /> TPH as Gasoline 6400 50 2500 µSIL N/A N/A 11/2/2005 WGC051102 <br />' Surrogate Surrogate Recovery Control Limits(%) Analyzed by mruen <br /> 4-Bromofluorobenzene 110 65 - 135 Reviewed by MaiOuTu <br /> lEPA 8020 BTEX <br /> arameter Result Qual DIP-F Detection Limit Units Prep Date Prep Batch Analysis Date QC Batch <br /> Benzene 86 50 25 µg/L NIA NIA 11/2/2005 WGC051102 <br /> loluene 45 50 25 µg/L, NIA N/A 11/2/2005 WM51102 <br /> thyl Benzene 190 50 25 µg/L NIA N/A 11/2/2005 WGC051102 <br /> ylenes,Total 700 50 25 µSIL N/A N/A 11/2/2005 WGCO51102 <br /> Surrogate Surrogate Recovery Control Limits(%) Analyzed by mruan <br /> 1 4-Bromofluorobenzene 112 65 - 135 Reviewed by MaiChiTu <br /> 45996-006 Sample ID TB-10262005 Matrix Liquid Sample Date 10/26/2005 <br /> EPA 5030C EPA 80151%40D (Purgeable) TPH as Gasoline <br /> arameter Result Qua[ DIP-F Detection Limit Units Prep Date Prep Batch Analysis Date QC Batch <br /> PH as Gasoline ND to 50 µSIL N/A N/A 11/2/2005 WGCO51102 <br /> Surrogate Surrogate Recovery Control Limits(%} Analyzed by mman <br />' 4-Bromofluorobenzene 95 5 65 - 135 Reviewed by MaiCturu <br /> EPA 8020 BTEX <br /> arameter Result Qual D/P-F Detection Limit Units Prep Date Prep Batch Analysis Date QC Batch <br /> Benzene ND 1 0 0 50 Pg/L NIA N/A 11/2/2005 WGC051102 <br /> Toluene ND 10 050 µg/L NIA N/A 11/2/2005 WGC051102 <br /> dthyl Benzene ND 10 0 50 µg/L NIA N/A 11/2/2005 WGCO51102 <br /> ylenes Total ND 10 050 µg/L N/A N/A 11/2/2005 WGC05l 102 <br /> Surrogate Surrogate Recovery Control Limits(%) Analyzed by mnuin <br /> 4-Bromofluorobenzene 867 65 - 135 Reviewed by MaiCluTu <br /> 1 <br /> election Limit=Detection Limit for Reporting ND=Not Detected at or above the Detection Limit <br /> I/P-F=Dilution and/or Pre Factor includes sample volume adjustments 11/4/2005 2 41 25 PM ECunmfYe <br /> Prep p 3 Qual=Data Qualifier <br />