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110 2nd Ave South,#137,Pacheco,CA 94553-5560 <br /> VMCCAMPBELL ANALYTICAL. INC Telephone 925-798-1620 Fax 925-798-1622 <br /> 11 m cam bell com E-mail maln@mccampbell corn <br /> QC REPORT <br /> I VOCs (EPA 824018260) <br /> Date 06/16100-06/17100 Matrix Soil <br /> Extraction NIA <br />' Concentration ug/kg %Recovery <br /> Compound Amount RPD <br /> Sample MS MSD Spiked MS MSD <br /> SamplelD 7500 Instrument GC-4 <br /> Surrogate 0 000 950 950 1 10000 95 95 0 0 <br /> Tolune 0 000 950 1120 10000 95 112 16 4 <br /> Benzene 0 000 99 0 1070 10000 99 107 78 <br /> Chlorobenzene 0 000 990 1220 10000 99 122 208 <br /> Tnchloroethane 0 000 820 850 10000 82 85 36 <br /> I1,1-Dichloroethene 0 000 1280 1280 10000 1 128 128 0 0 <br /> Surrogate 0 000 930 1080 10000 93 108 14 9 <br /> tert-Amyl Methyl Ether 0 000 990 970 10000 99 97 2 0 <br /> Methyl tort-Butyl Ether 0 000 940 93 0 10000 94 93 1 1 <br />' Ethyl tert-Butyl Ether 0 000 1000 1010 10000 100 101 1 0 <br /> Dl-isopropyl Ether 0 000 980 1000 100 00 98 100 2 0 <br /> I <br /> 1 <br /> I <br />' • (Ms—sample) <br /> %Re covery AmounlSp�ked 100 <br /> MS—MSD <br /> RPD= 2100 <br />' MS+MSD) <br /> RPD means Relative Percent Deviation <br />