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i <br /> C.HRoMALAB, INC. <br /> Environmental Services(SDB) <br /> FMarch 23 , 1998 Submission #: 98031.70 <br /> CONSTRUCTION TESTING & ENG. <br /> j <br /> I <br /> Atten: Steve Teel <br /> FProject: CINTRA PARK P oject#: 20-0445B <br /> Received: March 13 , 1998 <br /> re: Surrogate report for 1 sample for Gasoline BTEX MTBE analysis . <br /> F. Method: SW846 8020A Nov 1990 / 8015Mod <br /> Lab Run#: 11763 <br /> Matrix: WATER <br /> I <br /> % Recovery <br /> Sam le# Client Sam le ID Surroczate Recovered Limits i <br /> 175104-1 SB-3 3/11 TRI LUOROTOLUENE 80 . 6 65-135 <br /> 175104-1 SB-3 3/11 4-B OMOFLUOROBENZENE 99 . 7 65-135 <br /> % Recovery <br /> Sam le# C Sample MMe Surrc crate Recovered Limits <br /> t . 176682-1 Reagent blank (M)13) TRI LUOROTOLUENE 85 . 8 65-135 <br /> 176682-1 Reagent blank (MDB) 4-B OMOFLUOROBENZENE 105 65-135 <br /> F <br /> 176683-1 Spiked blank (BSP) TRS LUOROTOLUENE 90 . 2 65-135 <br /> 176683-1 Spiked blank (BSP) 4-B OMOFLUOROBENZENE 101 65-135 <br /> 176684-1 Spiked blank duplicate (BSD)TRI LUOROTOLUENE 76 .2 65-135 <br /> �. 176684-1 Spiked blank duplicate (BSD)4-B OMOFLUOROBENZENE 110 65-135 <br /> 176685-1 Matrix spike (MS) TRI LUOROTOLUENE 80 . 7 65-135 <br /> " 176685-1 Matrix spike (MS) 4-B OMOFLUOROBENZENE 104 65-135 <br /> 176686-1 Matrix spike duplicate (MSD)TRI LUOROTOLUENE 83 . 9 65--135 <br /> F 176686-1 Matrix spike duplicate (MSD)4-B OMOFLUOROBENZENE 103 65-135 <br /> 1 � <br /> F <br /> F . V132 <br /> QCSURR1229 MINCE 23-Mar-98 14:5 <br /> F <br /> 1220 Quarry lane• Pleasanton, California 94566-4756 <br /> (510) 484-1919• Facsimile (510) 484-1096 <br /> Federal ID #68-014 157 <br />