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' 110 2nd Avenue South,4137,Pacheco,CA 94553-5560 <br /> McCAMPBELL ANALYTICAL INC Telephone 925-798-1620 Fax 925-798-1622 <br /> 14 http//www mccampbell com E-mail main a mccampbell com <br /> QC REPORT <br /> ' VOCs (EPA 824018260) <br /> Date 04/19/02 Extraction EPA 5030 Matrix Water <br /> Concentration ug/L %Recovery � <br /> i Compound Amount RPD <br /> Sample MS MSD MS MSD <br /> _ <br /> Sa_mplelD Spiked 31602 Instrument GC-10 <br /> ' Surrogate ND 940 940 10000 94 94 0 0 E <br /> tert-Amyl Methyl Ether ND 100 100 1000 100 100 0 0 <br /> Methyl tert-Butyl Ether ND 93 96 1000 93 96 32 <br /> Ethyl tent-Butyl Ether ND 110 110 1000 110 110 00 <br /> Di-isopropyl Ether ND 110 120 1000 110 120 87 <br /> (MS—Saneple) <br /> ' %Re covert'= AnrounlSprked 100 <br /> MS—MSD) <br /> RPD=( 2100 <br /> ' (MS+MSD) <br /> RPD means Relative Percent Deviation <br />