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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# 12050 <br />' Matrix- SOIL <br /> Recovery <br /> Sample# Client Sample ID Surrogate Recovered Limits <br /> 177960--1 HP-1SC TRIFLUOROTOLUENE 248 65-135 <br /> 177960-1 HP-1SC 4-BROMOFLUOROBENZENE 280 65-135 <br /> % Recovery <br /> Sample# OC Sample Type Surrocrate Recovered Limits <br /> 179373-1 Reagent blank (MDB) TRIFLUOROTOLUENE 101 65-135 <br /> 179373-1 Reagent blank (MDB) 4-BROMOFLUOROBENZENE 82 9 65-135 <br /> 9374-1 Spiked blank (BSP) TRIFLUOROTOLUENE 95 1 65-135 <br /> 9374-1 Spiked blank (BSP) 4-BROMOFLUOROBENZENE 88 4 65-135 <br /> 179375-1 Spiked blank duplicate (BSD)TRIFLUOROTOLUENE 101 65-135 <br />' 179375-1 Spiked blank duplicate (BSD)4-BROMOFLUOROBENZENE 87 2 65-135 <br /> ' V132 <br /> aCSVFLR1229 VFNCE 16 Apr 98 16 3 <br /> ' 1220 Quarry Lane • Pleasanton, California 94566-4756 <br /> (510) 484-1919• Facsimile (510) 484-1096 <br /> Federal 10 #68-0140157 <br />