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EL Client ID: 020103983 QUALITY CONTROL RESULTS <br /> gin Number: C4080112 Volatile Organics <br /> Project ID (number): 020103983 Method: EPA 8020 <br /> Project ID (name): CHEVRON/Stockton. CA 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 /> Anal,,de Concentration Amount Concentration Recovery. X Concentration Recovery. X RPD, X RPD. X Recovery. X <br /> EPA 8020 GTEL Sample ID:C4080120-02 Spike ID:Q081094-3 pup. ID:QO81094-4 <br /> Units: u /L Analysis Date:09-AUG-94 10-AUG-94 11-AUG-94 Client ID:Batch QC <br /> 20.0: 17:2 85.9 ::17 0 849 1 1 34 57 .1 <br /> Toluene < 0.50 20.0 16.4 81.8 16.2 80.8 1.2 31 63-1.34% <br /> Eilbenzene < 0:50 20:'D 17.:,0 ;84.7 X6.7 831:2 1.7 38 59,E3! <br /> Xylenes (Total) < 0.50 60.0 48.9 81.4 47.7 79.4 2.4 31 59.3-144% <br /> Notes: <br /> GTEL Concord. CA NGTEL <br /> C408Q112:2 R <br /> LABORATORIES, INC. <br />