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110 2nd Avenue South,#D7,Pacheco,CA 94553-5560 <br /> McCAMPBELL ANALYTICAL INC Telephone 925-798-1620 Fax 925-798-1622 <br /> http//www mccampbell com E-mail main@mccampbell corn <br /> QC REPORT <br /> VOCs (EPA 824018260) <br /> Date 05/21/02 Extraction BPA 5030 Matrix Water 1 <br /> Concentration ug/L %Recovery <br /> Compound Amount RPD <br /> I Sample MS MSD Spiked MS MSD <br /> SamplelD 52002 Instrument GC-4 <br /> Surrogate ND 1020 1030 10000 102 103 10 <br /> tert-Amyl Methyl Ether ND 90 loo loco 90 100 105 <br /> Methyl tert-Butyl Ether ND 91 loo 1000 91 100 94 <br /> Ethyl tert-Butyl Ether ND 90 100 1000 90 100 105 <br /> Di-isopropyl Ether ND 90 100 10 0071 90 100 10 5 <br /> • (AtiS—Surnple} <br /> °'o Re cavery= Amonndpiked I00 <br /> (ILLS—MSD} <br /> RPD= 2100 <br /> (MS+A&LI) <br /> RPD means Relative Percent Deviation <br />