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110 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 E-mail mamQmceainpbell corn <br /> QC SUMMARY REPORT FOR SW8260B <br /> Matrix W WorkOrder 0403387 <br /> EPA Method SW8260B Extraction SW5030B BatchlD 10879 Spiked Sample 1D 0403379-0078 <br /> Sample Spiked MS* MSD" MS-MSD* LCS LCSD LCS-LCSD Acceptance Criteria <br /> pg/L }ig/L % Rec %Rec %RPD %Rec %Rec % RPD Low High <br /> i <br /> Benzene ND 10 120 119 0 316 117 115 147 70 130 <br /> Chlorobenzene ND 10 109 107 230 966 95 5 1 14 70 130 <br /> 1,1-Dichloroethene ND 10 106 106 0 954 942 129 70 130 <br /> Methyl-t-butyl ether(MTBE) 286 10 113 113 0 96 95 6 0 429 70 130 <br /> Toluene ND 10 112 110 157 952 93 9 136 70 130 <br /> Trichloroethene ND 10 865 858 0 824 81 80 4 0 744 70 130 <br /> %SS 1 108 10 104 104 0 998 993 0 516 70 130 <br /> %SS2 100 10 99 9 99 9 0 951 94 9 0 264 70130 <br /> %SS3 108 1 10 109 110 0 488 999 997 0203 70� 130 <br /> All target compounds to the Method Blank of this extraction hatch were ND less than the method RL with the following exceptions <br /> NONE <br /> MS=Matnx Spike MSD=Matrix Spike Duplicate LCS=Laboratory Control Sample LCSD=Laboratory Control Sample Duplicate RPD=Relative Percent <br /> Deviation <br /> %Recovery=100*(MS-Sample)!(Amount Spiked) RPD=100*(MS- MSD)/((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 soil matrix or exceeds 2x spike amount forwater matrix or sample diluted due to high matrix or <br /> analyte content <br /> • Laboratory extraction solvents such as methylene chloride and acetone may occasionally appear zn the method blank at low levels <br /> DHS Ccmfication No 1644 L QA/QC Officer <br />