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CHROMALAB, INC. Submission #: 1999-12-0377 <br /> Environmental Services(SDB) <br /> To: CH2M Hill-Oakland Test Method: 8260A <br /> Attn.: Keith Sheets Prep Method: 8260A <br /> Batch QC Report <br /> Fuel Oxygenates by GC/MS <br /> Method Blank Water . QC Batch#1999112129-01.06 <br /> r <br /> MB: 1999112/29-01.06-001 Date Extracted: 12/29/1999 17:00 <br /> Compound Result Rep.Limit Units Analyzed Flag <br /> tert-Butyl alcohol (TBA) ND 5.0 uglL 12/29/1999 17:00 <br /> Methyl tert-butyl ether(MTBE) ND 5.0 ug1L 12/29/1999 17:00 <br /> Di-isopropyl Ether(DIPE) ND 10.0 ug/L 12/29/1999 17:00 <br /> Ethyl tert-butyl ether(ETRE) ND 5.0 uglL 12/29/1999 17:00 <br /> tert-Amyl methyl ether(TAME) ND 5.0 uglL 12/29/1999 17:00 <br /> _ Surrogate(s) <br /> 1,2-Dichloroethane-d4 94.8 76-114 % 121291199917:00 <br /> I <br /> r <br /> .f . <br /> 1. <br /> . r <br /> i <br /> 1220 Quarry LanePleasanton,CA 94566.4756 <br /> Telephone:(925)484-1919•Facsimile:(925)484-1096 <br /> Printed on:01/03/200015:09 Page 9 of.12 <br />