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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#: WGC4010301 Units: µg/L <br /> ' Matrix: Liquid Date Analyzed: 3/1/01 <br /> Parameter Method Blank Spike Spike Sample Spike QC Type %Recovery RPD RPA Recovery <br /> Result Sample ID Amount Result Result Limits Limits <br /> i <br /> Test: TPH as Gasoline <br /> TPH as Gasoline EPA 8015 M ND 561 503.5 LCS 89.8 65.0-135.0 <br /> r <br /> Surrogate Surrogate Recovery Control Limits(%) <br /> aaa-Trifluorotoluene 104 65-135 <br /> Test: BTEX <br /> r Benzene EPA 8020 ND 6.2 5.83 LCS 94.0 65,0-135.0 <br /> Ethyl Benzene EPA 8020 ND 7.8 6.56 LCS 84.1 65.0-135.0 <br /> Toluene EPA 8020 ND 35.8 30.2 LCS 84.4 65.0-135.0 <br /> Xylenes,total EPA 8020 ND 43 34.8 LCS 80.9 65.0-135.0 <br /> Surrogate Surrogate Recovery Control Limits(%) <br /> aaa-Trifluorotoluene t00 65-135 <br /> Test: MTBE by EPA 8020 <br /> Methyl-t-butyl Ether EPA 8020 ND 52.8 54.0 LCS 102.3 65.0-135.0 <br /> Surrogate Surrogate Recovery Control Limits(%) <br /> aaa-Trifluorotoluene 100 65-135 <br /> Test: TPH as Gasoline <br /> TPH as Gasoline EPA 8015 M ND 561 491.5 LCSD 87.6 2.41 25.00 65.0-135.0 <br /> Surrogate Surrogate Recovery Control Limits(%) <br /> aaa-Trifluorotoluene 104 65-135 <br /> Test: BTEX <br /> Benzene EPA 8020 ND 6.2 5.83 LCSD 94.0 0.00 25.00 65.0-135,0 <br /> Ethyl Benzene EPA 8020 ND 7.8 6.48 LCSD 83.1 1.23 25.00 65,0-135.0 <br /> Toluene EPA 8020 ND 35.8 30.3 LCSD 84.6 0.33 25.00 65,0-135,0 <br /> Xylenes,total EPA 8020 ND 43 34.4 LCSD 80.0 1.16 25.00 65-0-135.0 <br /> Surrogate Surrogate Recovery Control Limits <br /> aaa-Trifluorotoluene 101 65- 135 j <br /> Test: MTBE by EPA 8020 <br /> Methyl-t-butyl Ether EPA 8020 ND 52.8 47.7 LCSD 90.3 12.39 25.00 655.0-135.0 <br /> Surrogate Surrogate Recovery Control Limits <br /> aaa-Trifluorotoluene 101 65-135 <br /> I <br /> Environmental Analysis Since 7983 <br />