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110 2nd Ave South,#D7,Pacheco,CA 94553-5560 <br /> 6 <br /> McCAMPBELL ANALYTICAL INC Telephone 925-798-1620 Fax 925-798-1622 4 <br /> dap/lynww mccampbell com E-mail main@mccampbell cum <br /> QC REPORT <br /> VOCs (EPA 824018260) <br /> I Date 06/19/00-06/20/00 Matnx Water/Air <br /> Extraction NIA <br /> IConcentration ug/L %Recovery <br /> Compound RPD <br /> Sample MS MSD AmountSpiked MS MSD <br /> SamplelD 63000 Instrument. GC-4 <br /> 1 Surrogate 0 000 980 920 10000 98 92 6 3 <br /> 11 tert-Amyl Methyl Ether 0 000 990 970 10000 99 97 2 0 <br /> Methyl Cert-Butyl Ether I 0 000 870 960 10000 87 96 98 <br /> Ethyl tert-Butyl Ether 0 000 930 1050 10000 93 10512 1 <br /> Di-isopropyl Ether 0 000 930 101 0 10000 93 101 8 2 <br /> I <br /> I <br /> 1 . <br /> {MS—Sample <br /> Re covery= 100 <br /> ,4mouxlSpked <br /> {MS—MSD <br /> RPD= 2100 <br /> (MS+MSD) <br /> RPD means Poat,ve Percent Deviation <br />