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110 2nd Avenue South 4D7 Pacheco,CA 94553=COM <br /> McCampbell Analytical Inc Telephone 925-798 1620 Fax 925-798-16 <br /> http Ilwww mecampbell com E-mail main mccain <br /> QC SUMMARY REPORT FOR SW8260B - <br /> Matrix W WorkOrder 0309310 <br />' EPA Method SW8260B Extraction SW5030B Batch ID 8574 Spiked Sample ID 0309310-002B <br /> Sample Spiked MS* MSD' MS-MSD LCS LCSD LCS-LCSD 1 Acceptance Criteria(%) <br />' pg/L. Ng/L %Rec %Rec %RPO %Rec %Rec. %RPD Levy High <br /> Methyl-t-butyl ether(MTBE) ND 10 81 9 83 7 2 18 873 102 156 70 130 <br /> %SS1 119 100 114 117 203 114 106 730 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 /> 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)1(Amount Spiked) RPD=100"(MS—MSD)1(MS+MSD)*2 <br /> "MS and I or MSD spike recoveries may not be near 100%or the RPDs near 0%it 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 /> N!A=not enough sample to perform matnx spike and matrix spike duplicate <br /> NR=anatyte concentration in sample exceeds spike amount for soak matrix or exceeds 2x spike amount for water matnx or sample diluted due to high matnx or <br /> ' anatyte content <br /> Laboratory extraction solvents such as methylene chloride and acetone may occasionalty appear in the method blank at low levels <br />