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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 Sod <br /> E=PA Methods Modified 8020 and Modified 8015a <br /> GTEL Sample Number 01027-8 01027-9 01027-10 01027-11 <br /> Client Identification SW 4@8'-9' PS 1@12'- PB 2@12'- SW 5@3'-4' <br /> ' 13' 13' <br /> Date Sampled 1-4-93 1-4-93 1-4-93 1-5-93 <br /> Date Extracted 1-5-93 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 2 9 0 005 0 009 0 050 <br /> Toluene 0 005 15 0 020 0 005 0 007 <br /> ' Ethylbenzene 0 005 25 0 018 <0 005 0 075 <br /> Xylene, total 0 015 86 0 089 <0 015 <0 015 <br /> TPH as Gasoline 5 500 <5 <5 <5 <br /> Dilution Multipherb 20 1 1 1 <br /> TFT surro atec, % recovery 107 104 113 120 <br /> ' a Test Methods for Evaluating Solid Waste, SW-846,Thud Edition, Revision 0,US EPA November 1986 Modification for TPN as gasoline <br /> as per California State Water Resources Board LUFT 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 /> 1 <br /> GTEL Torrance, CA Page 3 MGTE !.T301027 pOCRONMENTAL <br />' LABORATORIES INC <br />