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CHROMALAB, INC. <br /> Envirownental SeMces(SDB) <br /> April 9, 1999 Submission #: 9904031 <br /> SECOR CONCORD <br /> Atten: TOM CROSBY <br /> Project: LYON INVESTMENTS Project#: 70139-004-02 <br /> Received: April 1, 1999 <br /> ' re: Surrogate report for 8 samples for Volatile Organics by GC/MS <br /> analysis . <br /> Method: SW846 Method 8260A Sept 1994 <br /> Lab Run#: 18250 <br /> Matrix: WATER <br /> ' % Recovery <br /> Sample# Client Sample ID Surrogate Recovered Limits_ <br /> 235139-1 GP-1 4-BROMOFLUOROBENZENE 104 86-115 <br /> ' 235139-1 GP-1 D4-1, 2-DICHLOROETHANE 92 . 8 76-114 <br /> 235139-1 GP-1 D8-TOLUENE 104 88-110 <br /> 235141-1 GP-3 4-BROMOFLUOROBENZENE 102 86-115 <br /> 235141-1 GP-3 D4-1, 2-DICHLOROETHANE 97 .6 76-114 <br /> ' 235141-1 GP-3 D8-TOLUENE 106 88-11C <br /> 235143-1 GP-5 4-BROMOFLUOROBENZENE 105 86-115 <br /> 235143-1 GP-5 D4-1, 2-DICHLOROETHANE 103 76-114 <br /> ' 235143-1 GP-5 D8-TOLUENE 106 88-IIC <br /> 235144-1 GP-6 4-BROMOFLUOROBENZENE 103 86-115 <br /> 235144-1 GP-6 D4-1,2-DICHLOROETHANE 102 76-114 <br /> 235144-1 GP-6 D8-TOLUENE 105 88-11C <br /> 235145-1 GP-7 4-BROMOFLUOR013ENZENE 101 86-115 <br /> 235145-1 GP-7 D4-1,2-DICHLOROETHANE 99 .8 76-114 <br /> 235145-1 GP-7 D8-TOLUENE 108 88-11C <br /> ' 235146-1 GP-8 4-BROMOFLUOROBENZENE 101 86-11E <br /> 235146-1 GP-8 D4-1, 2-DICHLOROETHANE 107 76-114 <br /> 235146-1 GP-8 D8-TOLUENE 106 88-11C <br /> ' 235149-1 SW-1 4-BROMOFLUOROBENZENE 101 86-11E <br /> 235149-1 SW-1 D4-1, 2-DICHLOROETHANE 102 76-114 <br /> 235149-1 SW-1 D8-TOLUENE 108 88-11( <br /> 235150-1 SW-2 4-BROMOFLUOROBENZENE 101 86-11E <br /> ' 235150-1 SW-2 D4-1,2-DICHLOROETHANE 100 76-114 <br /> 235150-1 SW-2 D8-TOLUENE 107 88-11( <br /> % Recover} <br /> ' Sample# OC Sample Type Surrogate Recovered Limits <br /> 235887-1 Reagent blank (MDB) 4-BROMOFLUOROBENZENE 105 86-11E <br /> 235887-1 Reagent blank (MDB) D4-1, 2-DICHLOROETHANE 109 76-111 <br /> ' 235887-1 Reagent blank (MDB) D8-TOLUENE 107 88-11( <br /> V093 <br /> UCSURR1229 VT 09-Apr-9914:37: <br /> I <br /> 1220 QuarryLane Pleasanton, California 94566-4756 <br /> (925) 484-1919 • Facsimile (925) 484-1096 <br /> Federal ID#68-0140157 <br />