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I110 2nd Ave South,4D7,Pacheco,CA 94553-5560 <br /> McCAMPBELL ANALYTICAL INC Telephone 925-798-1620 Fax 925-798-1622 <br /> h I/www mccam bell com E-mail mam@mecampbell com <br />' QC REPORT <br /> VOCs (EPA 824018260) <br /> Date 03/05/02 Extraction EPA 5030 Matrix Air <br /> Concentration ug11, %Recovery <br /> CompoundAmount RPD <br /> Sample MS MSD Spiked MS MSD <br /> SamplelD 30102 Instrument GC-10 <br />' Surrogate ND 940 950 10000 E9495 1 1 <br /> tent-Amyl Methyl Ether ND 106 102 1000 102 38 <br />' Methyl tart-Butyl Ether ND 104 101 10 00 104 101 2 9 <br /> Ethyl tert-Butyl Ether ND 109 105 10 00 109 105 37 <br /> Di-isopropyl Ether ND 107 103 10 00 107 103 38 <br /> Toluene ND 104 102 1000 104 102 1 19 <br /> Benzene ND 106 103 1000 106 103 1 29 <br /> lie Chlorobenzene ND 107 105 1000 107 105 1 9 <br /> Trichloroethene ND 98 96 1000 98 96 21 <br />' 1,1-Dichloroethene ND 106 108 1000 106 108 1 9 <br /> r <br /> • <br /> MS—Sanrple� <br /> %Re covery= Anraunl5prked 100 <br /> RPD^(M5—MSD 2100 <br /> MS+X6D) <br /> RPD means Relative Percent Deviation <br />