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1 <br /> 0 2nd Avenue South #D7,Pacheco CA 94553-5560 <br /> McCampbell Analytical Inc 11 <br /> iTelephone 925-798-1620 Fax 925-798-1622 <br />' http/lwww mccampbell corn Frmail mam@mecampbell com <br /> QC SUMMARY REPORT FOR SW8260B <br /> BatchlD 2683 Matnx W WorkOrder 0206465 <br />' EPA Method SW8260B Extraction SW5030B Ext Date 6/28/02 Spiked Sample ID 0206465-005C <br /> Sample Spiked MS' MSD* MS-MSD* LCS LCSD LCS-LCSD Acceptance Criteria(°�) <br />' Compound <br /> pg/L pg/L %Rec %Rec %RPD %Rec %Rec %—RP D Low High <br /> Dusopropyl ether(RIPE) ND 10 111 111 00664 91 1 109 IS 70 130 <br />' Ethyl tert-butyl ether(ETBE) ND t0 I07 106 0 337 919 110 18 70 130 <br /> Methyl-t-butyl ether(MTBE) ND t0 108 108 0 633 947 112 17 70 130 <br />' tert-Amyl methyl ether(TAME) ND 10 109 109 000439 968 115 17 70 130 <br /> %SS 102 10 102 102 0 172 102 101 0 97 70 130 <br />' All target compounds in the Method Blank of this extraction batch were ND less than the method RL with the following exceptions <br /> NONE <br /> I <br /> �1 <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)I(Amount Spiked) RPD=100'(MS—MSD)/(MS+MSD)`2 , <br /> "MS and/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 /> W <br /> ILaboratory extraction solvents such as methylene chloride and acetone may occasionally appear In She method blank at low levels <br />