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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 Hwww mccampbell com E-mail mam@mccampbell com <br /> QC REPORT <br /> VOCs EPA 8240/8260 <br /> 1 <br />' Date 05/17/02 Extraction EPA 5030 Matrix Water/Air <br /> Concentration ug/L %Recovery <br /> Compound Amount RPD <br /> Sample MS MSD 5plked MS MSD <br /> Sample[D 51702 Instrument GC-4 <br /> Surrogate ND 980 960 10000 98 96 21 <br /> tert-Amyl Methyl Ether ND 11 0 110 1000 110 110 00 <br />' Methyl tent-Butyl Ether ND 100 100 1000 100 100 00 <br /> Ethyl tert-Butyl Ether ND 120 120 1000 120 120 00 <br /> Di-isopropyl Ether ND 120 120 1000 120 120 00 <br /> 1 <br /> • <br />' �MS-Sample <br /> %Recovery= Amm ,Spiked IDD <br /> MS-MSD <br />' RPD= 2100 <br /> htiS+MSD <br /> RPD means Relative Percent Denabon <br />