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Alpha VAnalytical Laboratories, Inc. email: clientservices©alpha-labs.com <br />Corporate: 208 Mason Street I Ukiah, CA 95482 I T: 707-468-0401 I F: 707468-5267 I ELAP# 1551 <br />Shimmick Construction Project Manager: Hagr Balla <br />8201 Edgewater Dr., Suite 202 Project: Smith Canal Reported: <br />Oakland, CA 94621 Project Number: CCR 66261.24 Tables land II 10/15/20 15:17 <br />TCLP Metals by EPA 6000/7000 Series Methods - Quality Control <br />Reporting Spike Source %REC RPD <br />Analyte(s) <br /> Result Limit Units Level Result %REC Limits RPD Limit Flag <br />Batch A104524 - EPA 1311/3015 <br />Matrix Spike (AI04524-MS1) <br /> Source: 2013191-02 Prepared: 10/12/20 Analyzed: 10/14/20 <br />Arsenic <br />Barium <br />Cadmium <br />Chromium <br />Lead <br />Selenium <br />Silver <br />Matrix Spike Dup (A104524-MSD1) <br />Arsenic <br />Barium <br />Cadmium <br />Chromium <br />Lead <br />Selenium <br />Silver <br />Batch AJ03591 - EPA 1311/7470A <br />Blank (AJ03591-BLK1) <br />Mercury <br />LCS (AJ03591-BSI) <br />Mercury <br />Duplicate (AJ03591-DUPI) <br />Mercury <br />0.231 0.10 mg/L 0.222 ND 104 70-130 <br />0.271 1.0 mg/L 0.222 ND 101 70-130 <br />0.219 0.10 mg/L 0.222 ND 98.5 70-130 <br />0.228 0.10 mg/L 0.222 ND 103 70-130 <br />0.211 0.10 mg/L 0.222 ND 94.9 70-130 <br />0.210 0.10 mg/L 0.222 ND 94.6 70-130 <br />0.238 0.50 mg/L 0.222 ND 107 70-130 <br />Source: 2013191-02 Prepared: 10/12/20 Analyzed: 10/14/20 <br />0.239 0.10 mg/L 0.222 ND 108 70-130 3.68 20 <br />0.272 1.0 mg/L 0.222 ND 102 70-130 0.0604 20 <br />0.217 0.10 mg/L 0.222 ND 97.9 70-130 0.629 20 <br />0.228 0.10 mg/L 0.222 ND 103 70-130 0.125 20 <br />0.215 0.10 mg/L 0.222 ND 96.6 70-130 1.78 20 <br />0.214 0.10 mg/L 0.222 ND 96.1 70-130 1.55 20 <br />0.238 0.50 mg/L 0.222 ND 107 70-130 0.202 20 <br />Prepared & Analyzed: 10/12/20 <br />ND 0.10 mg/L <br />Prepared & Analyzed: 10/12/20 <br />0.00234 0.10 mg/L 0.00250 93.7 80-120 <br />Source: 2013191-01 Prepared &Analyzed: 10/12/20 <br />ND 0.10 mg/L ND 20 <br />The results in this report apply to the samples analyzed in accordance with the chain of custody document. This analytical report must be reproduced in its entirety. <br />Page 12 of 23