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110 2nd Avenue South #D7,Pacheco,CA 94553-5560 <br /> McCampbell Analytical Inc Telephone 925-798-1620 Fax 925-796-1622 <br /> hap/lvnvw mccampbell com E-mail main@mccampbcll com <br /> QC SUMMARY REPORT FOR SW8260B <br /> BatchlD 2500 Matrix W WorkOrder• 0206275 <br /> EPA Method SW8260B Extraction SW5030B Ext Date 6/18/02 Spiked Sample fD 0206275-001C <br /> Sample Spiked MS* MSD* MS-MSD" LCS LCSD LCS-LCSD Acceptance Crdena(%} <br /> Compound <br /> Pg/L pg/L %Rec %Rec %RPD %Rec %Rec %RPD Low Nigh <br /> Dusopropyl ether(RIPE) ND 10 997 106 639 899 103 14 70 130 <br /> Ethyl tert-butyl ether(ETBE) ND 10 936 101 762 87 1 100 14 70 130 <br /> Methyl-t-butyi ether(MTBE) ND 10 92 101 966 879 101 14 70 130 <br /> tert-Amyl methyl ether(TAME) ND 10 932 103 994 87 103 16 70 130 <br /> %SS i 983 t0 983 997 138 102 101 0 70 130 <br /> All target compounds m the Method Blank of this extraction batch were ND less than the method RL with the followmg exceptions <br /> I 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 /> NIA=not enough sample to perform matrix spike or analyte concentration in sample exceeds spike amount <br />' %Recovery=100*(MS-Sample)1(Amount Spiked) RPD=100*(MS—MSD)/(MS+MSD)*2 <br /> *MS and 1 or MSD spike recoveries may not be near 100%or the RPDs near 0%if a)the sample is inhomogenous AND contains significant concentrations of <br /> analyte relative to the amount spiked,or b)if that specific sample matrix interferes with spike recovery <br />' Laboratory extraction solvents such as methylene chloride and acetone may occasionally appear In the method blank at low levels <br />