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i <br /> i <br /> a Submission #: 2001.09.0214 <br /> STL ChromaLab <br /> Environmental Services (CA 1094) <br /> r—� To: Wright Environmental Services Inc Test Method: 8260B <br /> Attn: Scott Cragin Prep Method: 5030B <br /> I� <br /> Batch QC Report <br />{ Fuel Oxygenates by 8260B <br /> Laboratory Control Spike(LCS/q,LCSD) Water QC Batch#2001/09/14-V1.27 <br /> LCS: 2001/09/14-V1.27-003 Extracted: 09/14/200114:23 Analyzed 09/14/200114:23 <br /> LCSD: 2001/09/14-V1.27-004 Extracted: 09/14/200114:51 Analyzed 09/14/200114:5,1 <br /> le <br /> Compound Conc. �',[ug/L] Exp.Conc. [ug/L] Recovery[%] RPD Ctrl.Limits[%] Flags <br /> LCS LCSD LCS LCSD LCS LCSD [%] Recovery RPD LCS LCSD <br /> Methyl tert-butyl ether 37.3 43.4 50 50 74.6 86.8 15.1 65-165 20 <br /> Surrogate(s) <br /> 1,2-Dichloroethane-d4 463 1181 500 500 92.6 96.2 76-114 <br /> i4 <br /> ly <br /> I <br /> I€ <br /> li <br /> i <br /> If <br /> �f <br /> �i <br /> I� <br /> li <br /> I� . <br /> 1220 Quarry LanePleasanton,CA 94566.4756 <br /> Telephone:(925)484-1919'Facsimile:(925)484-1096 <br /> Printed on:09/17/2001 13:32 Page 6 of 7 <br /> I <br /> i <br />