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Entech Analytical Labs, Inc. <br /> • 3334 Victor Court • Santa Clara, CA 95054 + (408) 588-0200 * Fax (408) 588-0201 <br /> Quality Control Results Summary <br /> QC Batch# WGC4010222 Units µg/L <br /> Matrix Liquid Date Analyzed 2/22/01 <br /> Parameter Method Blank Spike Spike Sample Spike QC Tvpe '%Recovery RPD RPD Recovery <br /> Result Sample ID Amount Result Result Limits Limits <br /> Test TPH as Gasoline <br /> TPH as Gasoline EPA 8015 M ND 561 492 1 LCS 877 650-1330 <br /> Surrogate Surrogate Recovery Control Limits(%) <br /> aaa-Tnfluorotoluene 101 65 - 135 <br /> Test BTEX <br /> Benzene EPA 8020 ND 62 579 LCS 934 650- 1350 <br /> Ethyl Benzene EPA 8020 ND 78 645 LCS 82 7 650- 1350 <br /> Toluene EPA 8020 ND 358 302 LCS 844 650-1350 <br /> Xylenes,total EPA 8020 ND 43 343 LCS 798 65 0-1350 <br /> Surrogate Surrogate Recovery Control Limits(%) <br /> aaa-Trifluorotoluene 99 65 - 135 <br /> Test MTBE by EPA 8020 <br /> Methyl-t-butyl Ether EPA 8020 ND 528 531 LCS 1006 650-1350 <br /> Surrogate Surrogate Recovery Control Limits(%) <br /> aaa Trifluorotoluene 99 65 - 135 <br /> st TPH as Gasolme <br /> TPH as Gasoline EPA 8015 M ND 561 4968 LCSD 886 095 2500 650-1350 <br /> Surrogate Surrogate Recovery Control Limits(%) <br /> aaa-Tnfluorotoluene 101 65 - 135 <br /> Test BTEX <br /> Benzene EPA 8020 ND 62 601 LCSD 969 3 73 2500 650-1350 <br /> Ethyl Benzene EPA 8020 ND 78 677 LCSD 868 484 2500 650- 1350 <br /> Toluene EPA 8020 ND 358 303 LCSD 846 033 2500 650- 1350 <br /> Xylenes,total EPA 8020 ND 43 354 LCSD 82 3 3 16 2500 650- 1350 <br /> Surrogate Surrogate Recovery Control Limits(%) <br /> aaa-Tnfluorotoluene 99 65 - 135 <br /> Test MTBE by EPA 8020 <br /> Methyl-t-butyl Ether EPA 8020 ND 52 8 549 LCSD 1040 3 33 2500 650-1350 <br /> Surrogate Surrogate Recovery Control Limits(%) <br /> aaa-Tnfluorotoluene 99 65 - 135 <br /> • <br /> Environmental Analysis Since 7983 <br />