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114 2nd Avenue South,#D7,Pacheco CA 94553-5560 <br /> Inc.McCampbell Analytical, Telephone 925-798-1620 Fax 925-798-1622 <br /> Website www mccampbell com >:-mail vnam(amccampbell com <br /> QC SUMMARY REPORT FOR SW8260B <br /> Matrix W WorkOrder 0406264 <br /> EPA Method SW8260B Extraction SW5030B BatchlD 11957 Spiked Sample ID 0406245-0158 <br /> Sample Spiked MS' MSD" MS-MSD' LCS LCSD LCS-LCSD Acceptance Cnterla(%) <br /> i pg/L pg/L % Rec % Rec % RPD % Rec % Rec %RPD Low Nigh <br /> cert-Amyl methyl ether(TAME) ND 10 797 735 8 13 87 905 3 96 70 130 <br /> t-Butyl alcohol(TBA) ND 50 792 767 323 109 112 316 70 130 <br /> 1,2-Dibromoethane(EDB) ND 10 93 896 371 101 101 0 70 130 <br /> 1,2-Dichloroethane(1,2-DCA) ND 10 101 lot 0 107 111 342 g70 <br /> 130 <br /> Dusopropyl ether(D1PE) ND 10 112 ]11 1 10 114 118 381 130 <br /> Ethyl tent-butyl ether(ETBE) ND 10 102 100J73 <br /> 108 113 478 130 <br /> Methyl-t-butyl ether(MTBE) ND 10 92 8 894104 107 294 70 130 <br /> %SS1 890 l0 872 869 823 838 1 80 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 /> MS=Matrix Spike MSD=Matrix Spike Duplicate LCS=Laboratory Control Sample LCSD=Laboratory Control Sample Duplicate RPD=Relative Percent <br /> Deviation <br /> %Recovery=100'(MS-Sample)1(Amount Spiked),RPD=100'(MS- MSD)1((MS+MSD)12) <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 /> NIA=not enough sample to perform matrix spike and matrix spike duplicate <br /> NR=analyte concentration in sample exceeds spike amount for sort matrix or exceeds 2x spike amount for water matrix or sample diluted due to high matrix or <br /> analyte content <br /> • 1 Laboratory extraction solvents such as methylene chloride and acetone may occasionally appear in the method blank at low levels <br /> DHS Certification No 1644 V16_A/QC Officer <br />