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CHROMALAB, INC. Submission #: 2000611-0543 <br /> Environmental Services(SDB) <br /> f <br /> I`r To: San Joaquin Company, Inc. Test Method: 8260A <br /> Attn: Bernie Dietz Prep Method: 5030 <br /> <� Batch QC Report <br /> MTBE-Volatile Organics by GC/MS <br /> Laboratory Control Spike (LCSILCSD) Water QC Batch #2000112101:01.07 <br /> LCS: 2000/12/01-01.07-003 Extracted: 121011200011:23 Analyzed 12101/200011:23 <br /> =:= LCSD: 2000/12101-01.07-006 Extracted: 12101/200013:17 Analyzed 12/011200013:17 <br /> .:I <br /> Compound Conc. [ug/L] Exp.Conc. [ug/L] Recovery[%] RPD Ctrl. Limits[%] Flags <br /> LCS LCSD LCS LCSD LCS LCS❑ [%] Recovery RPD LCS LCSD <br /> Benzene 39.6 41.2 50,0 50.0 79.2 82,4 4.0 69-129 20 <br /> Chlorobenzene 48,4 49.7 50.0 50.0 96.8 99.4 2.7 61-121 20 <br /> 1,1-Dichloroethene 33.0 36.2 50.0 50.0 66,0 72.4 9.2 65-125 20 <br /> Toluene 42.6 45:0 50.0 50.0 85.2 90.0 5.5 70-130 20 <br /> i Trichloroethene 38.9 40.7 50.0 50.0 77.8 81 A 4.5 74-134 20 <br /> J <br /> Surrogate(s) <br /> 1,2-Dichloroethane-d4 462 456 500 500 92.4 91.2 76-114 <br /> 4 <br /> i. <br /> �.1 <br /> r <br /> 1220 Quarry Lane`Pleasanton,CA 94566-4756 <br /> Telephone:(925)484-1919*Facslmile:(925)484-1096 <br /> Printed on: 12/18/2000 18:38 Page 7 of 8 <br />