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GTEL Client ID. SIE01CHV08 QUALITY CONTROL RESULTS <br /> Login Number C4110192 Volatile Organics <br /> Method EPA 8020 <br /> Project ID (number): 1-146-04 <br /> Project I0 (name): Chevron/9-6171/6633 Pacific Ave.. Stockton Matrix- Aqueous <br /> Matrix Spike and Matrix Spike Duplicate Results <br /> Matrix Matrix Matrix Spike Matrix Spike <br /> Original Spike Spike Spike Duplicate Duplicate Acceptability Limits <br /> AnallSe Concentration Amount Concentration Recov= f Concentration Recover x RPD Y RPD Y Recov X <br /> EPA 8020 GTEL Sample ID C4110093-02 Spike ID.Q111294.13 Oup. ID.Q111294-14 <br /> Units: u /L Analysis Date.08-NOV-94 13-NOV-94 13-NOV-94 Client ID-Batch QC <br /> Benzene 4 <A.50 20A 17.2 85.7 17.4 86.7 1.1 34 57.3-138% <br /> Toluene < 0 50 20 0 16 3 80 9 16 5 81 9 1 2 31 63-134% <br /> Ethylbenzene 1< 0.60 20.0 -16.5 82.2 16:9 84.2 2.4 - 38 39..3-137% <br /> Xylenes (Total) < 0 50 60 0 49 2 81 7 50 1 83 2 1 8 31 59 3-144% <br /> Notes <br /> • <br /> GTEL Concord. CA <br /> G,TE <br /> L <br /> ENVIGN AL <br /> C4110192 2 LABONATORIIS INC <br />