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— 1534 Willow Pass Road. Pittsburg. CA 94565-1701 <br />McCampbell Analytical, Inc. <br />Web: www.mccampbell.com E-mail: main amccampbell.com <br />"When Oualin Counts" Telephone: 877-252-9262 Fax: 925-252.9269 <br />QC SUMMARY REPORT FOR 6020A <br />W.O. Sample Matrix: Soil QC Matrix: Soil WorkOrder: 0901060 <br />EPA Method 6020A <br />Extraction SW3050B <br />BatchlD: 40631 <br />Spiked Sample ID 0901060-004A <br />Analyte <br />Sample <br />Spiked <br />MS <br />MSD MS -MSD Spiked <br />LCS <br />LCSD <br />LCS-LCSD <br />Acceptance Criteria (%) <br />mg/Kg mg/Kg <br />% Rec. <br />% Rec. % RPC mg/Kg <br />% Rec. <br />% Rec. <br />% RPD <br />MS / MSD I RPD LCS/LCSD RPD <br />Nickel <br />910 <br />50 <br />NR <br />NR NR 10 <br />95.1 <br />98,6 <br />3.55 <br />70 - 130 20 80 - 120 20 <br />,/.Ss: <br />83 <br />1 250 <br />121 <br />107 12.3 250 <br />94 <br />97 <br />2.43 1 <br />70 - 130 20 70 - 130 20 <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 />BATCH 40631 SUMMARY <br />Lab ID Date Sampled Date Extracted Date Analyzed Lab ID Date Sampled Date Extracted Date Analyzed <br />0901060-001 A H/06/09 10:18 AM 01 /06/09 )1/08/09 11:35 AM 0901060-002A )1/06/09 10:27 AM 01 /06/09 )1/08/09 11 44 AM <br />0901060-003A )1/06/09 10:39 AM 01/06/09 )1/08/09 11:52 AM 0901060-004A )1/06/09 10:48 AM 01/06/09 01/07/09 3:52 PM <br />MS = Matrix Spike; MSD = Matrix Spike Duplicate: LCS = Laboratory Control Sample: LCSD = Laboratory Control Sample Duplicate: RPD = Relative Percent Deviation. <br />% Recovery = 100 ' (MS -Sample) / (Amount Spiked): RPD = 100 ' (MS - MSD) / ((MS + MSD) 12). <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 inhomogenous <br />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 applicable to this method. <br />NR = matrix interference and/or analyte concentration in sample exceeds spike amount for soil matrix or exceeds 2x spike amount for water matrix or sample diluted due <br />to high matrix or analyte content. <br />DHS ELAP Certification 1644 QA/QC Officer <br />