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1 <br /> 110 2nd Avenue South #D7 Pacheco CA 94553-5560 <br /> McCampbell Analytical Inc Telephone 925-798-1620 Fax 925-798-1622 <br />' http//www mccampbell em E mail mam@nimampbell com <br /> QC SUMMARY REPORT FOR SW8021B/8015Cm <br /> BatchlD 1473 Matnx W WorkOrder• 0204385 <br />' EPA Method SW8021B/8015Cm Extraction SW50309 Ext Date 4124/02 Spiked Sample ID 0204389-003A <br /> Sample Spiked MS' MSD" MS-MSD' LCS LCSD LCS-LCSDAcceptance Criteria <br />' Compound <br /> Ng/L sig/L % Rec %Rec %RPD %Rec I %Rec %RPD Low High <br /> TPH(gas) ND 60 115 108 572 110 101 83 70 130 <br />' MTBE ND 10 864 865 00649 916 812 12 70 130 <br /> Benzene ND 10 941 884 621 951 861 99 70 130 <br />' Toluene ND l4 994 93 2 653 i00 903 10 70 130 <br /> Ethylbenzene ND 10 102 962 61 5 104 934 10 70 130 <br /> Xylenes ND 30 103 947 875 103 937 98 70 130 <br />' %SS 101 10 102 103 0 607 100 100 0 054 70 130 <br /> All target compounds in the Method Blank of this extraction batch were ND less than the method RL with the followmg exceptions <br />' NONE <br /> I• <br /> I <br /> 1 <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 /> I %Recovery=100•(NIS-Sample)!Viimount Spiked),RPD=100'(MS—MSD)!(MS+MSD).2 <br /> MS and!or MSD spike recovenes 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 /> I <br />