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1 <br /> McCampbell Analytical Inc. 110 2nd Avenue South,ttD=hecA560 <br /> Telephone:925-798-16 <br /> hnp://www.mccampbell.com Eell.com <br /> QC SUMMARY REPORT FOR SW8021B/8015Cm <br /> Matrix:W WorkOrder: 0307177 <br /> ' EPA Method: SW8021B/8015Cm Extraction: SW50306 BatchlD:7769 Spiked Sample ID: 0307161-002A <br /> Sample Spiked MS* MSD* MS-MSD LCS LCSD LCS-LCSD Acceptance Criteria(%) <br /> ' pg/L Ng/L %Rec. %Rec. %RPD %Rec. %Rec. %RPD Low High <br /> TPH(btex)£ ND 60 102 104 1.67 100 97.7 2.74 70 130 <br /> tMTBE ND 10 113 113 0 102 99.5 2.49 70 130 <br /> Benzene ND 10 99.1 100 0.991 103 99 4.19 70 j 130 <br /> Toluene ND 10 101 100 0.358 103 100 2.58 70 130 <br /> ' Ethylbenzene ND 10 102 102 0 105 102 3.52 70 130 <br /> Xylenes ND 30 103 103 0 107 103 3.17 70 130 <br /> ' %SS: 102 100 101 101 0 104 102 1.72 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 /> 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)/(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 /> N/A=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 /> analyte content. <br />