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CHROMALAB, INC. <br /> Environmental Services(SDB) <br /> IFebruary 8, 1999 Submission #: 9902051 <br /> URS GREINER <br /> Atten: Hollis Phillips <br /> Project: ARCH RD Project#: 43-00066762 . 004000 <br /> Received: February 3, 1999 <br /> re: Surrogate report for 5 samples for Gasoline BTEX analysis . <br /> Method: SW846 8020A Nov 1990 / 8015Mod <br /> Lab Run#: 17281 <br /> Matrix: SOIL <br /> % Recovery <br /> Sample# Client Sample ID Surrogate Recovered Limits <br /> 227415-1 B-9-8 TRIFLUOROTOLUENE 58 . 1 53-125 <br /> 227415-1 B-9-8 4-BROMOFLUOROBENZENE 48 . 8 58-124 <br /> 227416-1 B-9-6 TRIFLUOROTOLUENE 104 53-125 <br /> 227416-1 B-9-6 4-BROMOFLUOROBENZENE 89 . 7 58-124 <br /> 227417-1 B-10-10 TRIFLUOROTOLUENE 67 . 0 53-125 <br /> 227417-1 B-10-10 4-BROMOFLUOROBENZENE 62 . 6 58-124 <br /> 227418-1 13-10-10A TRIFLUOROTOLUENE 75 . 5 53-125 <br /> 227418-1 B-10-10A 4-BROMOFLUOROBENZENE 68 . 2 58-124 <br /> 227419-1 B-10-15 TRIFLUOROTOLUENE 76 . 8 53-125 <br /> 227419-1 B-10-15 4-BROMOFLUOROBENZENE 72 . 9 58-124 <br /> % Recovery <br /> Sample# OC Sample Type Surrogate Recovered Limits <br /> 227667-1 Reagent blank (MDB) TRIFLUOROTOLUENE 79 . 1 53-125 <br /> 227667-1 Reagent blank (MDB) 4-BROMOFLUOROBENZENE 74 . 2 58-124 <br /> 227668-1 Spiked blank (BSP) TRIFLUOROTOLUENE 100 53-125 <br /> 227668-1 Spiked blank (BSP) 4-BROMOFLUOROBENZENE 93 . 6 58-124 <br /> 227669-1 Spiked blank duplicate (BSD)TRIFLUOROTOLUENE 103 53-125 <br /> 227669-1 Spiked blank duplicate (BSD)4-BROMOFLUOROBENZENE 98 . 6 58-124 <br /> 227670-1 Matrix spike (MS) TRIFLUOROTOLUENE 78 . 5 53-125 <br /> 227670-1 Matrix spike (MS) 4-BROMOFLUOROBENZENE 77 . 7 58-124 <br /> 227671-1 Matrix spike duplicate (MSD)TRIFLUOROTOLUENE 58 .2 53-125 <br /> 227671-1 Matrix spike duplicate (MSD)4-BROMOFLUOROBENZENE 77 . 1 58-124 <br /> 1 V132 LEV2 <br /> OCSURR1229 VINCE 08�F.R9910:6 <br /> 1220 QuarryLane • Pleasanton, California 94566-4756 <br /> (925) 484-1919 • Facsimile (925) 484-1096 <br /> Federal ID#68-0140157 <br />