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Entech Analytical labs, Inc. <br /> 3334 Victor Court • Santa Clara, CA 95054 • (408) 588-0200 o Fax (408) 588-0201 <br /> Quality Control Results Summary <br /> QC Batch# WGC4010111 Units pg/L <br /> Matrix Liquid Date Analyzed 1111/01 <br /> Parameter Method Method Spike Spike Sample Spike QC Type %Recovery RPD RPD Recovery <br /> Blank Sample ID Amount Result Result Limits Limits <br /> Test TPH as Gasoline <br /> TPH as Gasoline EPA 8015 M ND 561 5129 LCS 914 750-1250 <br /> I <br /> Surrogate Surrogate Recovery Control Limits(%) <br /> aaa-Trifluorotoluene 104 65 - 135 <br /> Test BTEX <br /> Benzene EPA 8020 ND 6 2 623 LCS 1005 750- 1250 <br /> i <br /> Ethyl Benzene EPA 8020 ND 7 8 6 84 LCS 877 750-1250 <br /> Toluene EPA 8020 ND 35 8 320 LCS 894 750-1250 <br /> Xylenes total EPA 8020 ND 43 35 9 LCS 83 5 750-1250 <br /> Surrogate Surrogate Recovery Control Limits(%) <br /> aaa-Tnfluorotoluene 104 65 - 135 <br /> Test MTBE by EPA 8020 <br /> Methyl-t-butyl Ether EPA 8020 ND 528 41 3 LCS 782 650-1350 <br /> Surrogate Surrogate Recovery Control Limits(%) <br /> aaa Trilluorotoluene 104 65 - 135 <br /> Test TPH as Gasoline <br /> TPH as Gasoline EPA 8015 M ND 561 498 5 LCSD 889 2 85 2500 7�0-125 0 <br /> Surrogate Surrogate Recovery Control Limits(%) <br /> aaa-Tnfluorotoluene 103 65 - 135 <br /> Test BTEX <br /> Benzene EPA 8020 ND 62 5 79 LCSD 93 4 732 2500 750-1250 <br /> Ethyl Benzene EPA 8020 ND 7 8 6 81 LCSD 873 044 2500 750- 1250 <br /> Toluene EPA 8020 ND 35 8 31 8 LCSD 888 063 2500 750-1250 <br /> Xylenes,total EPA 8020 ND 43 35 3 LCSD 82 1 1 69 2500 750- 125 0 <br /> Surrogate Surrogate Recovery Control Limits(%) <br /> aaa-Trifluorotoluene 102 65 - 135 <br /> Test MTBE by EPA 8020 <br /> Methyl-t-butyl Ether EPA 8020 ND 52 8 35 2 LCSD 667 1595 2500 650-1350 <br /> Surrogate Surrogate Recovery Control Limits(%} <br /> aaa Trifluorotoluene 102 65 - 135 <br /> Environmental Analysis Since 7983 <br />