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110 2nd Ave South,#D7,Pacheco,CA 94553-5560 <br /> WCAMPBELL ANALYTICAL 1NC Telephone 925-798-1620 Fax 925-798-1622 <br /> hjp//www mccamnbell co m E-mail mam@mccampbell com <br /> 16 <br /> QC REPORT <br />' VOCs EPA 8240/8260 <br />' Date 12109199-12110199 Matrix Soil <br /> Extraction NIA <br />' Concentration ug/kg %Recovery <br /> Compound Amount RPD <br /> Sample MS MSD Spiked MS MSD <br /> Samplell] 19778 Instrument GC-4 <br />' tret-Amyl Methyl Ether 0 000 990 104 0 10000 99 104 49 <br /> Methyl fret-Butyl Ether 0 000 1160 1210 10000 116 121 42 <br />' Ethyl tret-Butyl Ether 0 000 1120 1160 10000 112 116 35 <br /> Di-isopropyl Ether 1 0 000 1050 1160 10000 105 116 100 <br /> Tolune 0 000 91 0 1120 10000 91 112 207 <br />' Benzene 0 000 900 960 10000 90 96 6 5 <br /> Chlorobenzene 0 000 1080 1090 10000 108 109 0 9 <br /> Trichloroethane 0 000 1040 1120 10000 104 112 74 <br /> 1,1-Dichloroethene 0 000 850 900 10000 85 90 57 <br />' h4S—Sample%Re covery= AmountSpaked 100 <br /> MS—MSD <br /> "I)= 21D0 <br />' (MS+MSD) <br /> RPD means Relative Percent Deviation <br />