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IT FIELD ANALYTICAL SER VICFS <br /> Analysis Date: 4-Feb-94 4585 PACHECO BOULEVARDGC A�: 20 MART=, CA <br /> QUALITY CONTROL SUMMARY <br /> EPA Method 8020 (BTEX) WATERS <br /> Water Matrix Spike Results <br /> Sample ID: 12T94MW 1 .: <br /> Spike Sample MS .. .. MSD :.9GRec RPD. <br /> Parameter Amount "' Result 96 Rt:cove 96 Recove Limits RPD' Limits <br /> Benzene 2.0 ugA <0.3 u 2 83% 86% 70-130 4% 15% <br /> Toluene 2.0 ug/L <0.3 ug/L 83% 74% 70-130 11% 15% <br /> Eth !benzene 2.0 ug/L <0.3 ug/L 95% 82% 60-140 15% 15% <br /> m,p-Xylenes 2.0 ug/L <0.5 ug/L 78% 72% 60-140 8% 15% <br /> o-X lens 2.0 ug/L <0.5 ug/L 85% 76% 60-140 11% 15% <br /> Surrogate — --- 99% 89% 50-150 — -- <br /> Laboratory Control Sample Results <br /> Sam le ID: Blank Water <br /> Spike Sample LCS LCSD96Rec` RPD , <br /> Parameter —Amount" 'Result % Recove % Recovery : :... Urnh _. RPD Gm�ta <br /> Benzene N/A N/A NIA N/A 70-130 N/A 15% <br /> Toluene NIA N/A N/A N/A 70-130 NIA 15% <br /> Ethylbenzene N/A N/A NIA N/A 60-140 N/A 15% <br /> m.p-Xylenes N/A N/A N/A N/A 60-140 N/A 15% <br /> o-Xylene N/A N/A N/A N/A 60-140 N/A 15% <br /> Surrogate -- --- NIA N/A 50-150 --- --- <br /> MSt, Matrix Spike <br /> MSD: Matrix Spike Duplicate <br /> LCS: Laboratory Control Sample <br /> LCSD: Laboratory Control Sample Duplicate <br /> RPD: Relative Percent Difference <br /> Supervising Chemist: GBTEXwaC.XLS <br /> F82A-s•@2 <br />