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• <br />SunStar <br />Laboratories, Inc. <br />—7P---11DING QUALITY ANALYTICAL SERVICES NATIONWIDE <br />25712 Commercentre Drive <br />Lake Forest, California 92630 <br />949.297.5020 Phone <br />949.297.5027 Fax <br />Brusca Associates Inc. Project: Lathrop 48 Acre Property <br />PO Box 332 Project Number: 137-002 Reported: <br />Roseville CA, 95661 Project Manager: Joe Brusca 05/16/17 12:00 <br />Metals by EPA 6010B - Quality Control <br />SunStar Laboratories, Inc. <br />Reporting Spike Source %REC RPD <br />lnalyte Result MDL Limit Units Level Result %REC Limits RPD Limit Notes <br />Batch 7050140 - EPA 3051 <br />Matrix Spike (7050140 -MSI) Source: T171074-06 Prepared: 05/01/17 Analyzed: 05/04/17 <br />Lead 104 0.010 3.0 mg/kg 94.3 ND 110 75-125 <br />Matrix Spike Dup (7050140-MSD1) <br />Source: T171074-06 <br />Prepared: 05/01/17 Analyzed: 05/04/17 <br />Blank (7050211-BLK1) <br />Arsenic <br />104 <br />0.008 <br />5.0 mg/kg <br />92.6 ND 112 75-125 <br />3.38 <br />20 <br />Barium <br />174 <br />0.003 <br />1.0 <br />92.6 79.6 102 75-125 <br />4.58 <br />20 <br />Cadmium <br />94.2 <br />0.001 <br />2.0 <br />92.6 ND 102 75-125 <br />6.35 <br />20 <br />Chromium <br />102 <br />0.001 <br />2.0 <br />92,6 5.14 104 75-125 <br />5.59 <br />20 <br />Lead <br />102 <br />0.010 <br />3.0 <br />92.6 ND 110 75-125 <br />2.00 <br />20 <br />Batch 7050211 - EPA 3010A <br />Blank (7050211-BLK1) <br />Prepared: 05/02/17 Analyzed: 05/03/17 <br />Antimony <br />ND <br />17 <br />50 ug/1 <br />Silver <br />ND <br />24 <br />50 " <br />Arsenic <br />ND <br />17 <br />50 <br />Band <br />ND <br />13 <br />50 " <br />Beryllium <br />ND <br />18 <br />50 " <br />Cadmium <br />ND <br />21 <br />50 " <br />Chromium <br />ND <br />21 <br />50 " <br />Cobalt <br />ND <br />14 <br />50 " <br />Copper <br />ND <br />20 <br />50 " <br />Lead <br />ND <br />17 <br />50 " <br />Molybdenum <br />ND <br />14 <br />50 " <br />Nickel <br />ND <br />14 <br />50 <br />Selenium <br />ND <br />19 <br />50 " <br />Thallium <br />ND <br />16 <br />50 " <br />Vanadium <br />ND <br />20 <br />50 " <br />Zinc <br />ND <br />17 <br />50 " <br />SunStar Laboratories, Inc. 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 />Llle <br />Page 77 of 94 <br />