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I 110 2nd Ave South,#D7,Pacheco, CA 94553-5560 <br /> MOCAMPBELL ANALYTICAL INC Telephone 925-798-1620 Fax 925-798-1622 <br /> hqp//www mccampbell com E-mail main@mccampbell com <br /> I� <br /> QC REPORT <br /> VOCs (EPA 824018260) <br /> Date 08123101-08124101 Extraction NIA _ Matrix _Water <br /> i <br /> Concentration ug/L %Recovery <br /> Compound ---iTAmount� RPD <br /> Sample MS MSD -MS-y MSD — <br /> Spiked <br /> SamplelD 82401 Instrument GC-10 <br /> Surrogate ND 1020 102 0 10000 102 102 00 <br /> tert-Amyl Methyl Ether ND 101 97 1000 101 97 40 <br /> Methyl tert-Butyl Ether ND 100 99 1000 100 99 1 0 <br /> Ethyl tent-Butyl Ether ND 92 92 1000 92 92 00 <br /> DI-Isopropyl Ether ND 9 3 93 1000 93 93 00 <br /> Toluene ND 98 99 1000 98 99 _ 10 <br /> Benzene ND 9 8 9 7 1000 98 97 1 0 <br /> Chlorobenzene ND 9 8 9 8 1000 98 98 0 0 <br /> Tnchloroethane ND 82 8 0 1000 82 80 25 <br /> 1,1-Dichloroethene ND 9 8 9 6 --10_00 98 _ 96 2 1 <br /> I <br /> I <br /> I <br /> I <br /> I <br />' 4 <br /> t (Ms-Sartrpre) <br /> %Recovery= AmounlSprked 100 <br /> A!S—h4SD� <br />' RPD= 2100 <br /> (A2S+MSD) <br /> RPD means Relative Percent Deviation <br />