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GTEL Client Number MIT05 MIT05 <br /> Project I D Unocal #8348 <br /> Tracy <br /> Work Order Number T301027 <br /> ' ANALYTICAL RESULTS <br /> Volatile Organics in Soil <br /> EPA Methods Modified 8020 and Modified 8015a <br /> GTEL Sample Number 01027-12 01027-19 01027-20 <br /> Client Identification SW 5@8'-9' SW 993'-4' SW 9@8'-9' <br /> ' Date Sampled 1-5-93 1-5-93 1-5-93 <br /> Date Extracted 1-5-93 1-5-93 1-5-93 <br /> Date Analyzed 1-5-93 1-5-93 1-5-93 <br /> Reporting <br /> Analyte Limit, mg/kg Concentration, mg/kg <br /> ' Benzene 0 005 0 010 0 013 026 <br /> Toluene 0 005 0 008 0 008 026 <br /> Ethylbenzene 0 005 0 050 0 051 42 <br /> ' Xylene, total 0 015 <0 015 <0 015 75 <br /> TPH as Gasoline 5 <5 <5 100 <br /> Dilution Muitiplierb 1 1 8 <br /> TFT surro atec, % recovery 121 123 122 <br /> a Test Methods for Evaluating Solid Waste,SW-846,Third Edition,Revision 0,US EPA November 1986 Modification for TPH as gasoline <br /> as per California State Water Resources Board LUF r 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 /> ' quarter Expected surrogate value is 1 07 mg/kg <br /> GTEL Torrance, CA Page 4 MGTEL <br /> T301027 DOC <br />' E N V i R O N ME N T A l <br /> LABORATQRIFS INC <br />