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CHROMALAB, INC. <br /> Environmental Services(SDB) <br />' April 16, 1998 Submission #: 9803455 <br />' HARDING LAWSON (SACRAMENTO) <br /> Atten Gary Haeck <br />' Project 38737 . 004 <br /> Received March 30 , 1998 <br />' re: Surrogate report for 1 sample for Gasoline BTEX analysis <br /> Method: SW846 8020A Nov 1990 / 8015Mod <br /> Lab Run#: 12211 <br /> Matrix: SOIL <br /> Recovery <br />' Sample#_._ Client Sample ID Surrogate Recovered Lamits <br /> 177966-1 HP-2SG TRIFLUOROTOLUENE 809 65-135 <br /> 177966-1 HP-2SG 4-BROMOFLUOROBENZENE 345 65-135 <br /> % Recovery <br />' Sample# OC Sample Type Surrogate Recovered Limits <br /> 180958-1 Reagent blank (MDB) TRIFLUOROTOLUENE 96 8 65-135 <br /> 180958-1 Reagent blank (MDP) 4-BROMOFLUOROBENZENE 113 65-135 <br /> W80960-1 Spiked blank (BSP) TRIFLUOROTOLUENE 102 65-135 <br /> 0960-1 Spiked blank (BSP) 4-BROMOFLUOROBENZENE 112 65-135 <br /> 180961-1 Spiked blank duplicate (BSD)TRIFLUOROTOLUENE 99 6 65-135 <br />' 180961-1 Spiked blank duplicate (BSD)4-BROMOFLUOROBENZENE 130 65-135 <br /> ' V135 <br /> QC$URR1229 VINCE 16 Apr 98 16 1 <br /> ' 1220 Quarry Lane • Pleasanton, California 94566-4756 <br /> (510) 484-1919• Facsimile (510) 484-1096 <br /> Federal ID #68-0140157 <br />