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SunStar <br />Laboratories, Inc. <br />PROVIDING QUALITY ANALYTICAL SERVICES NATIONWIDE <br />25712 Commercentre Drive <br />Lake Forest, California 92630 <br />949.297.5020 Phone <br />949.297.5027 Fax <br />Pangea Environmental Services, Inc. Project: 324 E. 11th <br />1710 Franklin Street, Suite 200 Project Number: [none] Reported: <br />Oakland CA, 94612 Project Manager: Elizabeth Avery 03/21/17 15:38 <br />Cold Vapor Extraction EPA 7470/7471 - Quality Control <br />SunStar Laboratories, Inc. <br />Reporting Spike Source %REC RPD <br />Analyte Result MDL Limit Units Level Result %REC Limits RPD Limit Notes <br />Batch 7022031 - EPA 7471A Soil <br />Blank (7022031-BLKI) <br />Prepared: 02/20/17 Analyzed: 02/22/17 <br />Mercury <br />ND <br />0.10 <br />mg/kg <br />LCS (7022031-BS1) <br />Prepared: 02/20/17 Analyzed: 02/22/17 <br />Mercury <br />0.352 <br />0.10 <br />mg/kg <br />0.410 85.8 75-125 <br />Matrix Spike (7022031-MS1) <br />Source: T170418-01 <br />Prepared: 02/20/17 Analyzed: 02/22/17 <br />Mercury <br />0.335 <br />0.10 <br />mg/kg <br />0.397 ND 84.5 75-125 <br />Matrix Spike Dup (7022031-MSD1) <br />Source: T170418-01 <br />Prepared: 02/20/17 Analyzed: 02/22/17 <br />Mercury <br />0.343 <br />0.10 <br />mg/kg <br />0.403 ND 85.1 75-125 2.34 20 <br />SunStar Laboratories, Inc. <br />The results in this report apply to the samples analyzed in accordance with the chain of <br />custody document. This analytical report must be reproduced in its entirety. <br />Page 15 of 27 <br />