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Alpha VAnalytical Laboratories, Inc. email: clientservices©alpha-labs.corn <br />Corporate: 208 Mason Street I Ukiah, CA 95482 I T: 707-468-0401 I F: 707-468-5267 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 />Analyte(s) <br />Reporting <br />Result Limit Units <br />Spike Source %REC <br />Level Result %REC Limits RPD <br />RPD <br />Limit Flag <br />Batch A104524 - EPA 1311/3015 <br />Blank (A104524-BLK1) Prepared: 10/12/20 Analyzed: 10/14/20 <br />Arsenic ND 0.10 mg/L <br />Barium ND 1.0 mg/L <br />Cadmium ND 0.10 mg/L <br />Chromium ND 0.10 mg/L <br />Lead ND 0.10 mg/L <br />Selenium ND 0.10 mg/L <br />Silver ND 0.50 mg/L <br />LCS (A104524-BS1) Prepared: 10/12/20 Analyzed: 10/14/20 <br />Arsenic 0.226 0.10 mg/L 0.222 102 85-115 <br />Barium 0.225 1.0 mg/L 0.222 101 85-115 <br />Cadmium 0.215 0.10 mg/L 0.222 96.8 85-115 <br />Chromium 0.226 0.10 mg/L 0.222 102 85-115 <br />Lead 0.213 0.10 mg/L 0.222 95.9 85-115 <br />Selenium 0.204 0.10 mg/L 0.222 91.8 85-115 <br />Duplicate (A104524-DUP1) Source: 2013191 -02 Prepared: 10/12/20 Analyzed: 10/14/20 <br />Arsenic ND 0.10 mg/L ND 20 <br />Barium ND 1.0 mg/L ND 3.20 20 <br />Cadmium ND 0.10 mg/L ND 20 <br />Chromium ND 0.10 mg/L ND 20 <br />Lead ND 0.10 mg/L ND 20 <br />Selenium ND 0.10 mg/L ND 20 <br />Silver ND 0.50 mg/L ND 20 <br />WIRL Check (A104524-MRL1) Prepared: 10/12/20 Analyzed: 10/14/20 <br />Silver ND 0.50 mg/L 0.0111 0-200 <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 11 of 23