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110 2nd Avenue South,#D7 Pacheco CA 94553-5560 <br /> McCampbell Analytical Inc Telephone 925 798-1620 Fax 925-798-1622 <br /> http llwww mecampbell cow E-mail main@meeampbell com <br /> QC SUMMARY REPORT FOR SW8021B18015Cm <br /> I <br /> BatchlD 2700 Matrix W WorkOrder 0206465 <br /> IEPA Method SW8021 B/8015Cm Extraction SW5030B Ext date 6128/02 Spiked Sample ID NIA <br /> Sample Spiked MS` MSD* MS-MSD* LCS LCSD LCS-LCSD Acceptance Critena(%) <br /> I Compound <br /> pg/L pg/L %Rec %Rec %RPD %Rec %Rec %RPD Low High <br /> TPH(gas) NIA 60 NIA N/A N/A I07 108 085 80 120 <br />' MTBE N/A 10 N/A N/A N/A 9l S 862 60 80 120 <br /> Benzene N/A 10 N/A NIA N/A 941 939 016 80 120 <br />' Toluene NIA 10 N/A N/A NIA 973 974 012 80 120 <br /> Ethylbenzene N/A 10 N/A N/A N/A 987 987 0 041 80 120 <br /> Xylenes N/A 30 N/A N/A N/A 993 993 0 80 120 ` <br />' %SS N/A 10 N/A N/A N/A 101 102 095 80 120 <br /> All target compounds m the Method Blank of this extraction batch were ND less than the method RL with the following exceptions <br />' NONE <br /> I <br /> I <br /> I , <br /> I <br />' MS=Matrix Spike MSD=Matrix Spike Duplicate LCS=Laboratory Control Sample,LCSD=Laboratory Control Sample Duplicate RPD=Relative Percent <br /> Deviation <br /> N/A=not enough sample to perform matrix spike or analyte concentration in sample exceeds spike amount. <br /> %Recovery=100'(MS-Sample)/(Amount Spiked) RPD=100*(MS—MSD)/(MS+MSD)*2 <br /> *MS and I or MSD spike recoveries may not be near 100%or their RPDs near 0%if a)the sample is inhomogeneous AND Contains significant concentrations of <br /> analyze relative to the amount spiked or b)if that specific sample matrix interferes with spike recovery <br />