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Ni <br /> 1102nd Avenue South #D7 Pacheco CA 94553-5560 <br /> McCampbell Analytical, Inc. Telephone 925 798 1620 Fax 925 798 1622 <br /> Website www mccampbell com E-mail maur c@mccampbell coni <br /> QC SUMMARY REPORT FOR SW8260B <br /> W O Sample Matrix Water QC Matrix Water WorkOrder 0442516 <br /> EPA Method SW8260B Extraction SW5030B BatchlD 14485 Spiked Sample ID 0412516-005B <br /> Sample Spiked MS' MSD` MS-MSD" LCS. LCSD LCS-LCSD Acceptance Criteria(%) <br /> Analyte <br /> pg/L pg/L % Rec % Rec % RPD % Rec % Rec % RPD MS/MSD ILCS 1 LCSD <br /> Methyl-t-butyl ether(MTBE) ND 10 102 936 940 967 936 3 25 70- 130 70- 130 <br /> %SSI 115 10 103 98 5 35 102 96 595 70- 130 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)I(Amount Spiked) RPD=100'(MS- MSD)/((MS+MSD)/2) <br /> MS 1 MSD spike recoveries and I or%RPD may fall outside of laboratory acceptance criteria due to one or more of the following reasons a)the sample is <br /> inhomogenous AND contains significant concentrations of analyte relative to the amount spiked or b)the spiked sample s matrix interferes with the spike <br /> recovery <br /> NIA=not enough sample to perform matrix spike and matrix spike duplicate <br /> NR w analyte concentration in sample exceeds spike amount for sod matrix or exceeds 2x spike amount for water matrix or sample diluted due to high matrix or <br /> analyte content <br /> Laboratoryextraction solvents such as methylene chloride and acetone may occasional) appear <br /> to the method blank at low levels <br /> DHS Certification No 1644 QA/QC Officer <br />