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Analytical Inc. 110 2nd Avenue South,#D7,Pacheco,CA 94553-5560 [74:�McCarapbell Analytical InTelephone:925-798-1620 Fax:925-798-1622 ' httpWwww.mwampbell.com E-mail:rnain@mccampbell.com • QC SUMMARY REPORT FOR SW8260B Matrix: S WorkOrder. 0210562 ' EPA Method: SW8260B Extraction: SW5030B BatchlD:4692 Spiked Sample ID: NIA Sample Spiked MS' MSD' MS-MSD' LCS LCSD LCS-LCSD Acceptance Criteria(%) ' Compound i pg/Kg pg/Kg % Rec. %Rec. %RPD %Rec. % Rec. % RPD Low High I Benzene NIA 50 N/A N/A N/A 106 99 6.51 70 130 Itert-Amyl methyl ether(TAME) N/A 50 NIA N/A N/A 104 111 7.29 70 130 Methyl-t-butyl ether(MTBE) N/A 50 N/A N/A NIA 109 114 4.17 70 130 Toluene N/A 50 N/A N/A N/A 105 98.6 6.13 70 130 Diisopropyl ether(DIPE) N/A 50 NIA N/A N/A 86.9 93.9 7.79 70 130 Ethyl tett-butyl ether(ETBE) NIA 50 N/A NIA N/A 102 110 7.44 70 130 %SSI: NIA 100 N/A N/A NIA 110 101 9.06 70 130 %SS2. N/A 100 N/A N/A N/A 93.4 92.6 0.855 70 130 %SS3: NIA 100 NIA N/A NIA 92 91.7 0.284 70 130 All target compounds in the Method Blank of this extraction batch were ND less than the method RL with the following exceptions: IleNONE I I I I I I MS=Matrix Spike;MSD=Matrix Spike Duplicate;LCS=Laboratory Control Sample;LCSD=Laboratory Control Sample Duplicate;RPD=Relative Percent Deviation. 0 N/A=not enough sample to perform matrix spike and matrix spike duplicate. NR=analyte concentration in sample exceeds spike amount for soil matrix or exceeds 2x spike amount for water matrix or sample diluted due to high matrix or analyte content, %Recovery=100"(MS-Sample)I(Amount Spiked);RPD=100•(MS—MSD)I(MS+MSD)"2. 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 analyte relative to the amount spiked,or b)if that specific sample matrix interferes with spike recovery.