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McCam pbell Analytical, Inc. 1534 Willow Pass Road, Pittsburg, CA 94565-1701 Web: www .mccatnpbell.com E-mail: main@mccampbell.com "When Oualiry Counts" Tele hone: 877-252-9262 Fax: 925-252-9269 QC SUMMARY REPORT FOR SM4500-CN ABCE W.O. Sample Matrix: Soil QC Matrix: Soil BatchlD: 39137 WorkOrder min9R9 EPA Method SM4500-CN ABCE Extraction SM4500-CN E Spiked Sample ID: 0810269-015B Analyte Sample Spiked MS MSD mg/Kg mg/Kg % Rec. % Rec. MS -MSD LCS LCSD LCS-LCSD Acceptance Criteria (%) % RPD % Rec. % Rec. % RPD MS / MSD RPD LCS/LCSD RPD Total Cyanide ND 0.80 84.6 84.9 0.289 103 103 0 80 - 120 1 20 90 - 110 1 20 All target compounds in the Method Blank of this extraction batch were ND less than the method RL with the following exceptions. NONE BATCH 39137 SUMMARY Lab ID Date Sampled Date Extracted Date Analyzed Lab ID Date Sampled Date Extracted Date Analyzed 0810269-015B 10/09/08 11 :33 AM 10/24/08 10/28/08 1:29 PM 0810269-021 B 10/09/08 10:32 AM 10/24/08 10/29/08 4:17 PM 0810269-024B 10/09/08 10:20 AM 10/24/08 10/28/08 2 39 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 Spiked); RPD = 100 * (MS - MSD) / ((MS + MSD) / 2). 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 AND contains significant concentrations of analyte relative to the amount spiked, or b) the spiked sample's matrix interferes with the spike recovery. N/A = not enough sample to perform matrix spike and matrix spike duplicate. 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 analyte content. DIAS ELAP Certification 1644 - QA/QC Officer