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1•� STL ChromaLab Submission # 2001-04-0530 <br /> Environmental Services(CA 1094) <br /> To Wright Enwronmental Services Inc Test Method 82608 <br /> Attn Marla Reid Prep Method 50308 <br /> Batch QC Report <br /> Fuel Oxygenates by 82606 <br /> Matrix Spike ( MS 1 MSD ) Water QC Batch #2001/05/01-01 27 <br /> Sample ID MW-7 Lab Sample ID 2001-04-0530-007 <br /> I <br /> MS 2001105101-01 27-008 Extracted 05/01/2001 18 04 Analyzed 05/01/2001 18 04 Dilution 1 0 <br /> MSD 2001105101-01 27-009Extracted 05/01/2001 18 34 Analyzed 05/01/2001 18 34 Dilution 1 0 <br /> Compound !Cone. [ug/L] Exp Conc (ug/L] jRecovery[ ] RPD Ctrl Limits[%] Flags I <br /> MS j MSD ISample MS l MSD I MS i MSD i [%] Recoveryi RPD� MS i MSD ' <br /> Methyl tert-butyl ether 430 459 INC) 500 i 500 1 86 01 91 8I 65 65-165 20 I i <br /> IE <br /> Surrogate(s) i <br /> 1 2-Dichloroethane-d4 195 3 11052 1 500 l 500 95 31 105 2 76-514 <br /> Toluene-d8 1981 l 986 500 I 500 l 98 11 98 61 88-110 <br /> I <br /> I <br /> I <br /> I <br /> I <br /> 1220 Quarry Lane'Pleasanton CA 94566-4756 <br /> Telephone (925)484-1919'Facsimile (925)484-1096 <br /> Printed on 05!0212003 16 29 <br /> Page 15 of 15 1 <br />