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McCampbell A al tical Inc. 1534 Willow Pass Road,Pittsburg,CA 94565-1701 Web:www.mccampbell.com E-mail:main@mccampbell.com "When Oualitv Counts" I Telephone:877-252-9262 Fax:925-252-9269 QC SUMMARY REPORT FOR 6020A W.O.Sample Matrix: Solid OC Matrix: Soil BatchlD: 49286 WorkOrder 1003406 EPA Method 6020A Extraction CA Title 22 Spiked Sample ID: N/A Analyte Sample Spiked MS MSD MS-MSD LCS LCSD LCS-LCSD Acceptance Criteria(%) mg/L mg/L %Rec. %Rec. %RPD %Rec. % Rec. %RPD MS/MSD RPD LCS/LCSD RPD Chromium N/A 10 N/A N/A N/A 98.6 99.3 0.687 N/A N/A 75- 125 20 Copper N/A 10 N/A N/A N/A 101 101 0 1 N/A N/A 75 - 125 20 Lead N/A 10 N/A N/A N/A 96.8 96.8 0 N/A N/A 75 - 125 20 Mercury N/A 0.25 N/A N/A N/A 98.4 100 1.77 N/A N/A 75- 125 20 Nickel N/A 10 N/A N/A I N/A 99.6 99.7 0.120 N/A N/A 75 - 125 20 All target compounds in the Method Bla k of this extraction batch were ND less than the method RL with the following exceptions: NONE BATCH 49286 SUMMARY Lab ID Date Sampled Date Extracted Date Analyzed Lab ID Date Sampled Date Extracted Date Analyzed 1003406-OOIA 03/09/10 2:15 PM 03/20/10 03/22/10 6:03 PM MS=Matrix Spike;MSD=Matrix Spike Duplicate LCS=Laboratory Control Sample;LCSD=Laboratory Control Sample Duplicate;RPD=Relative Percent Deviation. %Recovery=100'(MS-Sample)/(Amount Spik d);RPD=100'(MS- MSD)/((MS+MSD)/2). MS/MSD spike recoveries and/or%RPD may f II outside of laboratory acceptance criteria due to one or more of the following reasons:a)the sample is inhomogenous AND contains significant concentrations of analyte rela ive to the amount spiked,or b)the spiked sample's matrix interferes with the spike recovery. N/A=not applicable to this method. NR=analyte concentration in sample exceeds sp a amount for soil matrix or exceeds 2x spike amount for water matrix or sample diluted due to high matrix or analyte content. DHS ELAP Certification 1644 Al QA/QC Officer