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' 110 2nd Ave South,#D7,Pacheco,CA 94553-5560 <br /> WEIWCAMPBELL ANALYTICAL INC Telephone 925-798-1620 Fax 925-798-1622 <br /> http//www mccampbell.cum E-mail mam@mccampbel corn <br /> 1 <br /> QC REPORT <br /> VOCs (EPA 824018260) <br /> ' Date 07/19100-07120/00 Matrix Water <br /> Extraction NIA <br /> ' Concentration ug/L %Recovery <br /> CompoundAmoun# RPC] <br /> ' Sample MS MSD Spiked MS MSD <br /> SamplelD 71700 instrument GC-4 <br /> Surrogate 0 000 880 800 10000 88 80 95 <br /> tert-Amyl Methyl Ether 0 000 950 900 10000 95 90 54 <br /> Methyl tert-Butyl Ether 0 000 91 0 920 10000 91 92 1 1 <br /> Ethyl tert Butyl Ether 0 000 930 960 10000 93 96 32 <br /> Di-isopropyl Ether 0 000 800 81 0 10000 80 81 12 <br /> 1 <br /> i 1 <br /> MS—Sample <br /> %Re eovery= Amoundpr&ed 100 <br /> MS—MSD <br /> RPD- 2100 - <br /> ' (MS+MSD <br /> RPD means Relative Percent Deviation <br />