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�+ 1102nd Avenue Sen11, 7,Pacheco,CA 94553-5560 <br /> McCampbell Analytical, Inc. <br /> Telephone:925-798-1620 Fax:925-798-1622 <br /> -T Website:www.mccampbell.com E-mail:main r@mwampbell.wm <br /> QC SUMMARY REPORT FOR SW8260B <br /> r <br /> Matrix: S WorkOrder: 0409241 <br /> EPA Method: SW0260B Extraction: SW5030B BatchlD:13176 Spiked Sample ID: 0409241-001A <br /> Sample Spiked MS' MSD' MS-MSD LCS LCSD 'LCS-LCSD Acceptance Criteria(°h) <br /> Analyte -- <br /> pg/Kg pg/Kg %Rec. %Rec. %RPD %Rec. %Rec. %RPD Low High <br /> 6. Methyl-t-buryi ether(MTBE) ND 50 88.5 89.9 1.57 99.7 100 0.308 70 130 <br /> %SS1: 98.9 50 93 1 93 0 98.7 100 1.28 70 130 <br /> 60 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 /> taa <br /> r <br /> r <br /> r <br /> MS=Matrix Spike;MSD=Matrix Spike Duplicate;LCS=Laboratory Control Sample;LCSD=Laboratory Control Sample Duplicate;RPD=Relative Percent <br /> Ir. Deviation. <br /> %Recovery=100•(MS-Sample)/(Amount Spiked);RPD=100•(MS- MSD)/((MS+MSD)/2). <br /> .MS/MSD spike recoveries and/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 recovery. <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 /> Laboratory extraction solvents such as methylene chloride and acetone may occasionally appear in the method blank at low levels. <br /> 1, <br /> DHS Certification No. 1644 A/QC Officer <br />