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1 <br /> 110 2nd Avenue South,4D7,Pacheco,CA 94553-5560 <br /> McCAMPBELL ANALYTICAL INC Telephone 925-798-1620 Fax 925-798-1622 <br /> ' http//www mceampbell corn E-mail mam@mccampbell cam <br /> ' QC REPORT <br /> VOCs (EPA 824018260) <br /> Date 04/23/02 Extraction EPA 5030 Matnx Water a <br /> Concentration ug/L %Recovery <br /> Compound Amount RPD <br /> ' Sample MS MSD Spiked MS MSD <br /> SamplelD 42302 Instrument GC-10 <br /> Surrogate ND 900 1010 10000 90 101 115 <br /> tert-Amyl Methyl Ether ND 108 99 1000 108 99 87 <br /> ' Methyl tert-Butyl Ether ND 114 104 1000 114 104 92 <br /> Ethyl tent-Butyl Ether ND 114 101 1000 114 101 121 <br /> Di-isopropyl Ether ND 107 101 1000 107 101 58 <br /> ' Trichloroethene ND 98 87 1000 98 87 11 9 <br /> 1 li <br /> I ' i <br /> i <br /> to <br /> ' !lam-Santple� <br /> %Recovery= Arrt.-dprked X00 <br /> i <br /> AE-�D) <br /> ' RPD= zioo ik <br /> (ass+,usD) <br /> RPD means Relative Percent Dewathon <br /> i ' <br />