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STL ChromaLab Submission #: 2001-08-0190 <br /> Environmental Services(CA 1094) <br /> To: CH2M Hill-Oakland Test Method: 8260B <br /> I Attn: Keith Sheets Prep Method: 5030B <br /> Batch QC Report <br /> Fuel Oxygenates by 8260B (Law Level) <br /> Laboratory Control Spike(LCS/LCSD) Water QC Batch#2001108/14-V2.27 <br /> LCS: 2001108114-V2.27-008 Extracted: 081141200113:30 Analyzed 08/141200113:30 <br /> LCSD: 2001108114-V2.27-009 Extracted: 08114/200114:02 Analyzed 081141200114:02 <br /> Compound Cone. [ug/L] Exp.Conc. [ug/L] Recovery[%] RPD Ctrl.Limits[%] Flags <br /> LCS LCSD LCS LCSD LCS LCSD [%] Recovery RPD LCS LCSD <br /> 1" <br /> l Methyl tort-butyl ether 19.7 21.4 25 25 78.8 85.6 8.3 65-165 20 <br /> Surrogate(s) <br /> 1,2-Dichloroethene-d4 536 545 500 500 107.2 109.0 76-114 <br /> f <br /> I <br /> I <br /> t <br /> 1220 Quarry Lane*Pleasanton,CA 94566-4756 <br /> Telephone:(925)484-1919'Facsimile:(925)484-1096 <br /> Printed on:08/20/2001 17:43 Page 6 of 9 <br />