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CHROMALAB, INC. <br /> Environmental Services(SDB) <br /> March 30, 1998 Submission #: 98033.72 <br /> r CONSTRUCTION TESTING ENG. <br /> Atten: Steve Teel <br /> Project: 20--0445B <br /> �. � Received: March 26 , 1998 <br /> re: Surrogate report for 2 samples for Gasoline BTEX analysis . <br /> k � Method: SW846 8020A Nov 1990 / 8015Mod <br /> Lab Run#: 11834 <br /> Matrix: SOIL <br /> % Recovery <br /> samle# Client Sample ID Surrocrate Recovered Limits <br /> 177211-1 PMW 3 , 21 . 0-21 . 5 TRIFLUOROTOLUENE 76 . 0 65-135 <br /> 177211-1 PMW 3 , 21 . 0-21 . 5 4-BROMOFLUOROBENZENE 73 . 1 65-135 <br /> 177212-1 PMW 3 , 25 . 0-25 . 5 TRIFLUOROTOLUENE 75 .4 65-135 <br /> 177212-1 PMW 3 , 25 . 0-25 . 5 4-BROMOFLUOROBENZENE 69 . 1 65-135 <br /> % Recovery <br /> Sam le# OC Sample TyRe —Surrocrate Recovered Limits <br /> 177488-1 Reagent blank (AlrB) TRIFLUOROTOLUENE 72 . 3 65-135 <br /> 177488-1 Reagent blank (M7B) 4- ROMOFLUOROBENZENE 75 . 8 65-135 <br /> 177489-1 Spiked blank (BSP) TRIFLUOROTOLUENE 82 . 5 65-135 <br /> 177489-1 Spiked blank (BSP) 4- ROMOFLUOROBENZENE 86 . 1 65--135 <br /> 177490-1 Spiked blank duplicate (BSD)TRIFLUOROTOLUENE 77 . 5 65-135 <br /> 177490-1 Spiked blank duplicate (BSD)4- ROMOFLUOROBENZENE 101 65-135 <br /> 177491-1 Matrix spike (MS) TRIFLUOROTOLUENE 66 .4 65-135 <br /> �— 177491-1 Matrix spike (MS) 4- ROMOFLUOROBENZENE 51 . 8 65-135 <br /> 1 . 177492-1 Matrix spike duplicate (MSD)TRIFLUOROTOLUENE 63 . 1 65-1.35 <br /> '177492-1 Matrix spike duplicate (MSD)4- ROMOFLUOROBENZENE 49 . 6 65-135 <br /> r <br /> IL - <br /> r <br /> r . <br /> F. <br /> F, <br /> F V132 <br /> QCSURR1229 VINCE 30-Mar-98 11:0 <br /> FJ <br /> 1220 Quarry Lane• Pleasanton, California 94566-4756 <br /> (510) 4841919• Facsimile ( 10) 484-1096 <br /> Federal ID #68-0140157 <br />