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GTEL Client Number MIT05 MIT05 <br /> Project I D Unocal #6348 <br /> Tracy <br /> Work Order Number T301027 <br /> ' ANALYTICAL RESULTS <br /> Volatile Organics In Soil <br /> EPA Methods Modified 8020 and Modified 8015a <br /> 1 GTEL Sample Number Lab Blank 01027-3 01027-4 01027-7 <br /> Client Identification -- SW 2@3'-4' SW 2@8'-9' SW 493'-4' <br /> Date Sampled -- 1-4-93 1-4-93 1-4-93 <br /> Date Extracted -- 1-5-93 1-5-93 1-5-93 <br /> Date Analyzed 1-5-93 1-5-93 1-5-93 1-5-93 <br /> Reporting <br /> Analyte Limit, mg/kg Concentration, mg/kg <br /> ' Benzene 0 005 <0 005 0 046 11 031 <br /> Toluene 0 005 <0 005 0 010 31 0 026 <br /> Ethylbenzene 0 005 <0 005 <0 005 60 084 <br /> ' Xylene, total 0 015 <0 015 010 140 0 061 <br /> TPH as Gasoline 5 <5 <5 880 7 <br /> lb Ddutlon Multiplierb 1 1 40 1 <br /> TFT surro atec, % recovery 971 116 105 120 <br /> a Test Methods for Evaluating Solid Waste, SW-846 Third Edition,Revision 0,US EPA November 1956 Modification for TPH as gasoline <br /> as per California State Water Resources Board LUFr Manual procedures Results are calculated on a wet weight basis <br /> b Indicates the adjustments made for sample dilution <br /> c TFT surrogate recovery acceptability limits of 72 8-123%are derived from the 99%confidence interval of all samples during the previous <br /> 1 quarter Expected surrogate value Is 107 mg/kg <br /> 1 <br /> GTE <br /> Torrance, CA Page 2 GTE L <br /> T301301 027 DOC <br /> E N v I R O N M E N T A L <br /> tABORATORIES INC <br />