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116 2nd Avenue South,#D7,Pacheco CA 94553 5560 <br /> McCampbcll Analytical Inc Telephone 925-798-1620 Fax 925 798-1622 <br /> L //www--hell cnm 1-marl mart mcca bell cpm <br /> QC SUMMARY REPORT FOR SW8021B/8015Cm <br /> I <br /> Matrix W WorkOrder 0306423 <br />' EPA Method SW8021B18015CM Extraction SW5030B BatchlD 7441 Spiked Sample ID 0306411-031A <br /> Sample Spiked MS" MSD' MS-MSD' LC5 LCSD LCS-LCSD Acceptance Criteria(%) <br />' pg/L pg/L %Rec % Rec % RPD % Rec %Rec %RPD Low High <br /> TPH(btex)£ ND 60 113 113 0 112 109 246 70 130 <br /> I MTBE ND 10 88 6 889 0 259 996 934 643 70 130 <br /> Benzene ND 10 110 112 1 16 108 106 1 25 70 130 <br /> Toluene ND t0 101 101 0 994 991 0307 70 130 <br />' Ethylbenzene ND 10 109 110 0 667 108 107 0 413 70 130 <br /> Xylenes ND 30 103 107 3 17 100 too 0 70 130 <br /> 109 100 101 104 366 102 101 0 764 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 /> 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=100'(MS-Sample)!(Amount Spiked) RPQ=140'(MS—MSD)/(MS+MSD)"2 <br /> MS and 1 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 wdh 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 matnx or <br /> analyte content <br /> I <br />