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110 2nd Avenue South,4D7,Pacheco,CA 94553-5560 <br /> + McCampbell Analytical, Inc. Telephone 925-798-1620 Fax:925-798-1622 <br /> A4 Website:w ,w.inccainpbell.coin E-mail:main«mccampbell.com <br /> QC SUMMARY REPORT FOR 6010C <br /> Matrix: S WorkOrder: 0405449 <br /> EPA Method: 6010C Extraction: SW3050B BatchlD:11732 Spiked Sample ID: 0405447-017A <br /> Sample Spiked MS* MSD* !MS-MSD LCS LCSD 'LCS-LCSD Acceptance Criteria(%) <br /> mg/Kg mg/Kg %Rec. %Rec. %RPD %Rec. %Rec. %RPD Low High <br /> Cadmium 0.15 50 86.7 87.8 1.20 89.8 86.5 3.69 80 120 <br /> Chromium 50.90 50 NR NR NR 90.7 90.2 0.553 80 120 <br /> Lead 7.67 50 83.6 85.5 1.85 89.5 87.8 1.86 80 120 <br /> Nickel 38.10 50 85.5 90.7 3.19 94 91.6 2.69 80 120 <br /> Zinc 29.18 50 81.3 85.8 3.21 91.4 89.1 2.60 80 120 <br /> %SS: 104 250 91.8 90.6 1.24 98.6 93.2 5.66 80 120 <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)/(Amount Spiked);RPD'=100*(MS- MSD)/((MS+MSD)/2). <br /> *Acceptance Criteria for MS/MSD is between 70%and 130%. MS and/or MSD spike recoveries may not be near 100%or the RPDs near 0%if:a)the sample <br /> is inhomogenous AND contains significant concentrations of analyte relative to the amount spiked,or b)if that specific sample matrix interferes with spike recovery. <br /> N/A=not applicable to this method. <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 /> DHS Certification No. 1644 QA/QC Officer <br /> r'- <br />