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CHROMALAB, INC, <br /> Environmental Services(SDB) <br /> April 2 , 1998 Submassaon #: 9803455 <br /> HARDING LAWSON (SACRAMENTO) <br /> Atten: Gary Haeck <br />' Protect: 38737 004 <br /> Received: March 30 , 1998 <br /> re: Surrogate report for 1 sample for Fuel Oxygenates by GC/MS <br /> analysis <br /> Method. EPA SW846 Method 8260 Modified <br />' Lab Run#: 11951 <br /> Matrix: WATER <br />' Recovery <br /> Sample# Client Sample ID Surrogate Recovered Limits <br /> 177958-j. HP-2WA D4-1, 2-DICHLOROETHANE 113 76-1.14 <br /> % Recovery <br /> Sample# OC Sample Type Surrogate Recovered Limits <br /> 178471-1 Reagent blank (MDB) D4-1, 2-DICHLOROETHANE 83 . 2 76-114 <br /> 178472-1 Spiked blank (BSP) D4-1, 2-DICHLOROETHANE 83 . 8 76--114 <br /> 78473-1 Spiked blank duplicate (BSD)D4-1, 2-DICHLOROETHANE 110 76-114 <br /> i <br /> i <br /> V060 <br /> OCSURR1229 SYSAOM 02 Apr 9B 12 <br />' 1220 Ouarry Lane • Pleasanton, California 94566-4756 <br /> (510) 4841919• Facsimile (510) 484-1096 <br /> Federal ID #68-0140157 <br />