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1 <br /> 110 2nd Avenue South,#137, Pacheco,CA 94553-5560 <br /> McCAMPBELL ANALYTICAL INC Telephone 925-798-1620 Fax 925-798-1622 <br />' http//www mccampbell com E-mail matn@mccampbell com <br /> QC REPORT <br />' VOCs (EPA 8240/8260) <br /> Date 05/16/02 Extraction EPA 5030 Matrix Water <br />' Concentration ug/L %Recovery <br /> CompoundAmount RPD <br />' Sample MS MSD Spiked MS MSD <br /> SampielD 51602 Instrument GC-10 <br />' Surrogate ND 1030 980 10000 103 98 50 <br /> tert-Amyl Methyl Ether ND 87 88 1000 87 88 1 1 <br /> Methyl tert-Butyl Ether ND 86 86 1000 86 86 00 <br />' Ethyl tert-Butyl Ether ND 89 90 1000 89 90 1 1 <br /> DoPropy1l-lsEther ND 94 94 1000 94 94 00 j <br /> I <br /> 1 <br /> I -- <br /> (h�S—Smnple� <br />' %Reco.ery= Amarmdprkcd 10 <br /> RPD= 2100 <br />' (M6+16D) <br /> RPD means Relauve Percent Deviation <br />