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1102nd Avenue South #D7 Pacheco CA 94553-5560 McCampbell Analytical Inc Telephone 925-798-1620 Fax 925-798-1622 ' htip llwww mccampbell com Email main@mccampbe0 com QC SUMMARY REPORT FOR SW8260B Matrix W WorkOrder 0304328 ' EPA Method SW8260B Extraction SW5030B BatchlD 6651 Spiked Sample ID 0304378-001C Sample Spiked MS• MSD` MS-MSD LCS LCSD JLCS-LCSD Acceptance Criteria(%) ' Compound pg/L Ng/L % Rec %Rec %RPD %Rec %Rec %RPD Low High Dusopropyl ether(DIPE) ND 10 103 105 165 106 106 0 70 130 ' Ethyl tert-butyl ether(ETRE) ND 10 92 933 145 988 984 0 364 70 130 Methyl-t-butyl ether(MTBE) 09226 10 798 922 269 93 91 8 127 70 130 ' tert-Amyl methyl ether(TAME) ND 10 88 887 0 815 873 868 0 621 70 I 130 Methanol ND 2500 994 905 935 91 5 912 0 392 70 130 Ethanol ND 500 996 909 912 101 81 1 216 70 i 130 ' 1,2-Dibromoethane(EDB) ND 10 120 119 0 388 119 120 146 70 130 1,2-Dichloroethane(1,2-DCA) 3 387 10 112 117 346 118 120 1 53 70 130 ' %SS 113 100 110 111 1 03 109 108 0 694 70 130 All target compounds to the Method Blank of this extraction batch were ND less than the method RL with the following exceptions • NONE I MS=Matrix Spike,MSD=Matrix Spike Duplicate LCS=Laboratory Control Sample LCSD=Laboratory Control Sample Duplicate RPD=Relative Percent Deviation %Recovery=1 o0'(AAS Sample)I(Amount Spiked) RPD=tO0.(MS—MSD)/(MS+MSD)'2 MS and/or MSD spike recoveries may not be near 100%or the RPDs near O%if a)the sample is inhomogenous AND contains signrFicant concentrations of • analyte relative to the amount spiked or b)if that specific sample main interferes with spike recovery 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 ILaboratory extraction solvents such as methylene chloride and acetone may occasionally appear in the method blank at low levels I