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t <br /> 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# WGC42240 Units. 4g(L <br /> Matrix Liquid Date Analyzed 11/29/01 <br /> Parameter Method Blank Spike Spike Sample Spike QC Type %Recovery RPD RPD Recovery <br /> Result Sample 1D Amount Result Result Limits Limits <br /> Test TPH as Gasolme <br /> TPH as Gasoline EPA 8015 M ND 561 50631 LCS 903 592 111 9 <br /> Surrogate Surrogate Recovery Control Limits(%) <br /> aaa-Tnfluorotoluene 100 65 - 135 <br /> ' Test BTEX <br /> Benzene EPA 8020 ND 62 6 657 LCS 1074 65 0 1350 <br /> Ethyl Benzene EPA 8020 ND 7 8 7 747 LCS 993 65 0-135 0 <br /> ' Toluene EPA 8020 ND 35 8 3625 LCS 1013 — 650-1350 <br /> Xylenes,total EPA 8020 ND 43 39 86 LCS 92 7 650 1350 <br /> Surrogate Surrogate Recovery Control Limits(%) <br /> aaa-Tnfluorotoluene 102 65 - 135 <br /> ' Test MTBE by EPA 8020 <br /> Methyl-t-butyl Ether EPA 8020 ND 52 8 65 739 LCS 1245 65 0 135 0 <br /> Surrogate Surrogate Recovery Control Limits(%) <br /> aaa-Trifluorotoluene 102 65 - 135 <br /> Test- TPH as Gasoline <br /> TPH as Gasoline EPA 8015 M ND 561 511 52LCSD 912 102 2500 592 111 9 <br /> Surrogate Surrogate Recovery Control Limits(%) <br /> aaa-Tnf]uarotolucne 99 65 - 135 <br /> Test BTEX <br /> Benzene EPA 8020 ND 6 2 7 155 LCSD 1154 721 2500 65 0 135 0 <br /> Ethyl Benzene EPA 8020 ND 7 8 8 237 LCSD 1056 6 13 2500 650 1350 <br /> Toluene EPA 8020 ND 358 35 569 LCSD 994 1 90 25 00 650- 1350 <br /> Xylenes,total EPA 8020 ND 43 40 755 LCSD 948 2 22 2500 650- :35 0 <br /> Surrogate Surrogate Recovery Control Limits(%) <br /> aaa-Tnfluorotoluene 109 65 - t3.� <br /> ITest MTBE by EPA 8020 — — --- --—-- - <br /> Methyl-[butyl Ether EPA 8020 ND 528 62 772 LCSD 1189 4 62 2-) 65 00 65 0 1350 <br /> Surrogate Surrogate Recovery Control Limits(%) <br /> aaa-Tifluoratoluene 109 65 - 135 <br /> Environmental Analysis Since 7983 <br />