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CHROMALAB, INC. <br /> Environmental Services(SDB) <br /> December 31, 1998 Submission #: 9812353 <br /> DIETZ IRRIGATION <br /> Atten: Bernie Dietz <br /> Project: NAVARRA <br /> Received: December 21, 1998 <br /> re: Surrogate report for 5 samples for Fuel Oxygenates by GC/MS <br /> analysis . <br /> Method: EPA SW846 Method 8260 Modified <br /> Lab Run#: 16771 <br /> Matrix: SOIL <br /> % Recovery <br /> Sample# Client Sample ID Surrogate Recovered Limits <br /> 222492-1 PL-1-5 D4-1, 2-DICHLOROETHANE 72 . 6 70-121 <br /> 222493-1 PL-2-6 D4-1, 2-DICHLOROETHANE 82 .4 70-121 <br /> 222494-1 D-1-7 D4-1, 2-DICHLOROETHANE 72 .4 70-121 <br /> 222495-1 D-2-7 D4-1, 2-DICHLOROETHANE 84 . 8 70-121 <br /> 222496-1 D-3-7 D4-1, 2-DICHLOROETHANE 94 . 6 70-121 <br /> Recovery <br /> am�le_# OC Sample Type Surrogate Recovered Limits <br /> 223501-1 Reagent blank (MDB) D4-1, 2-DICHLOROETHANE 89 . 6 70-121 <br /> 223502-1 Spiked blank (BSP) D4-1, 2-DICHLOROETHANE 91 . 2 70-121 <br /> 223503-1 Spiked blank duplicate (BSD)D4-1, 2-DICHLOROETHANE 89 . 6 70-121 <br /> V060 <br /> OCSURR1229 Y 31-OW-9013:13:1 <br /> 1220 Quarry Lane • Pleasanton, California 94566-4756 <br /> (925) 484-1919 • Facsimile (925) 484-1096 <br /> Federal ID #68-0140157 <br />