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110 2nd Avenue South,#137 Pacheco CA 94553-5560 <br /> McCampbell Analytical Inc Telephone 925-799-1620 Fax 925-798-1622 <br /> hapffwwwrticcampbellcorn E-mail rmm@=campbellcorn <br /> QC SUMMARY REPORT FOR SW8021B/8015Cm <br /> Matrix A WorkOrder 0307043 <br />' EPA Method SW8021B/8015Cm Extraction SW5030B BatchlD 7658 Spiked Sample ID N/A <br /> Sample Spiked MS* MSD* MS-MSD' LCS. LCSD LCS-LCSD Acceptance Cntena(%) <br />' uUL uL/L % Rec % Rec % RPD %Rec % Rec %RPD Low High <br /> TPH(btex)£ N/A 60 NIA N/A NIA 111 112 0 634 70 130 <br />' MTBE N/A 10 N/A N/A N/A 108 108 0 70 130 <br /> Benzene N/A 10 NIA N/A N/A 99 8 103 3 60 70 130 <br /> Toluene N/A i0 N/A N/A N/A 937 96 1 2 58 70 130 <br />' Ethylbenzene N/A t0 N/A NIA N/A 106 104 159 70 130 <br /> Xylenes N/A 30 N/A N/A N/A 100 96 4 08 70 130 <br />' %SS N/A 100 N/A N/A NIA 1 101 100 0 921 70 130 <br /> All target compounds in the Method 131ank of this extraction batch were ND less than the method RL with the following exceptions <br />' NONE <br /> 1 <br /> 1 <br /> MS=Matrix Spike MSD=Matrix Spike Duplicate LCS=Laboratory Control Sample LCSD=Laboratory Control Sample Duplicate RPD=Relative Percent <br />' Deviation <br /> %Recovery=140*(MS-Sample)/(Amount Spiked) RPD=100*(MS—MSD)/(MS+MSD)'2 <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 /> £TPH(btex)=sum of BTEX areas from the FID <br /> #cluttered chromatogram sample peak coelutes with surrogate peak <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 for water matrix or sample diluted due to high matrix or <br /> janalyte content <br /> 1 <br />