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' IT FIELD ANALYTICAL SERVICES <br /> Date 5-Feb-93 4585 PACHECO BOULEVARD <br /> MARTINEZ, CA <br /> Quality Control Summary <br /> EPA Methods 8020 1BTEX) and Modified 8015 iGasoitne and Diesel) <br />' Water Matrix Spike Results <br /> Sample ID SB-1-W-11 <br /> Spike Sample MS MSD %Rao RPD <br /> Parameter Amount Result % Recovery % Recovery Limits RPD Limits <br /> Benzene 50 ug/Kg <5 ug/Kg 99% 93% 70-130 6% 15% <br />' Toluene 50 ug/Kg <5 ug/Kg 97% 90% 70-130 7% 15% <br /> Ethylbenzene 50 ug/Kg <5 ug/Kg 98% 91% 60-140 7% 15% <br /> Total Xylenes 150 ug/Kg <10 uglKg 102% 92% 60-140 10% 15% <br />' TPH-Gas NIA NIA NIA N/A 60-140 NIA 15% <br /> TPH-Diesel NIA N/A NIA NIA 60-140 NIA 15% <br /> Laboratory Control Spike Results <br /> Sample ID Blank Water <br />' Spike Sample LCS LCSD %Rea RPD <br /> Parameter Amount Result % Recovery % Recovery Limits RPD Limits <br /> Benzene NIA NIA N/A NIA 70-130 NIA 15% <br /> Toluene NIA NIA NIA NIA 70-130 NIA 15% <br /> Ethylbenzene N/A NIA N/A NIA 60-140 N/A 15% <br /> Total Xylenes NIA NIA N/A NIA 60-140 N/A 15% <br />' TPH-Gas N/A NIA NIA NIA 60-140 NIA 15% <br /> TPH-Diesel N/A NIA NIA N/A 60-140 N/A 15% <br />' MS Matrix Spike <br /> MSD Matrix Spike Duplicate <br /> LSC Laboratory Control Spike <br /> LSCD Laboratory Control Spike Duplicate <br /> RPD Relative Percent Difference <br /> TPH-Gas Total Petroleum Hydrocarbons as Gasoline <br /> TPH-Diesel Total Petroleum Hydrocarbons as Diesel <br /> NIA Sample not spiked with this parameter <br /> Supervisâ–șng Chemist , 682A t 92 <br />