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S 10 2nd Avenue South 0D7 Pzcheco CA 44»3 560 Inc.McCampbell Analytical, Telephone 925 798 1620 Fix 925 798 1622 A4I Website www,uccampbellwin E-mil ,namnmcc-linpbellcoin QC SUMMARY REPORT FOR SW8260B Matrix W WorkOrder 0409254 ' EPA Method SW8260B Extraction SW5030B BatchlD 13184 Spiked Sample ID 0409354-001A Analyte Sample Spiked MS" MSD' MS-MSD LCS LCSD LCS-LCSD Acceptance Criteria(%) ' pg/L pgJL %Rec % Rec % RPD %Rec % Rec %u RPO Low High Cert Amyl methyl ether(TAME) ND 10 849 87 244 87 1 869 0 295 70 130 ' t-Butyl alcohol (TBA) ND �0 91 2 896 1 83 83 7 827 1 25 70 130 Dusopmpyl ether(DIPS) ND 10 112 111 0 387 122 119 2 38 70 130 Ethyl Cert-butyl ether(ETBE) ND 10 104 106 1 54 107 104 244 70 130 ' Methyl-t-hutvl ether(MTBE) ND 10 109 1 1 1 148 969 936 343 70 130 %SSI 889 10 966 946 208 983 973 l 06 70 1.130 ' All t irget compounds in the Method Blank of this extraction batch were ND less than the method RL with the tollowing extrpuons NONE I I MS=Matrix Spike MSD=Matrix Spike Duplicate LCS=Laboratory Control Sample LCSD=Laboratory Control Sample Duplicate RPD=Relative Percent Deviation %Recovery=100 (MS Sample)/(Amount Spiked) RPD=104'(MS MSD)I((MS+MSD)12) ' MS/MSD spike recoveries and/or%RPD may fall outside of laboratory acceptance criteria due to one or more of the following reasons a)the sample is inhomogenous AND contains significant concentrations of analyte relative to the amount spiked or b)the spiked sample s matrix interferes with the spike recovery NIA=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 Laboratory extraction solvents such as methylene chloride and acetone may occasionally appear in the method blank at low levels DHS Certification No 1644 QA/QC Officer