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Project: <br />Project Number: <br />Project Manager: <br />Reported: <br />Brusca Associates Inc. <br />PO Box 332 137-002 <br />Joe Brusca <br />Lathrop 48-Ac Property <br />04/20/18 11:17Roseville CA, 95661 <br />25712 Commercentre Drive <br />Lake Forest, California 92630 <br />949.297.5020 Phone <br />949.297.5027 Fax <br />Result Limit <br />Reporting <br />Units Level <br />Spike <br />Result <br />Source <br />%REC <br />%REC <br />Limits RPD <br />RPD <br />Limit Notes Analyte <br />Metals by EPA 6010B - Quality Control <br />SunStar Laboratories, Inc. <br />Batch 8041326 - EPA 3050B <br />Blank (8041326-BLK1)Prepared: 04/13/18 Analyzed: 04/16/18 <br />Antimony mg/kgND3.0 <br />Silver "ND 2.0 <br />Arsenic "ND 5.0 <br />Barium "ND 1.0 <br />Beryllium "ND 1.0 <br />Cadmium "ND 2.0 <br />Chromium "ND 2.0 <br />Cobalt "ND 2.0 <br />Copper "ND 1.0 <br />Lead "ND 3.0 <br />Molybdenum "ND 5.0 <br />Nickel "ND 2.0 <br />Selenium "ND 5.0 <br />Thallium "ND 2.0 <br />Vanadium "ND 5.0 <br />Zinc "ND 1.0 <br />LCS (8041326-BS1)Prepared: 04/13/18 Analyzed: 04/16/18 <br />Arsenic mg/kg96.4 5.0 100 75-12596.4 <br />Barium "97.6 1.0 100 75-12597.6 <br />Cadmium "97.8 2.0 100 75-12597.8 <br />Chromium "97.4 2.0 100 75-12597.4 <br />Lead "105 3.0 100 75-125105 <br />Matrix Spike (8041326-MS1)Prepared: 04/13/18 Analyzed: 04/16/18 Source: T181248-01 <br />Arsenic mg/kg82.6 5.0 96.2 1.96 75-12583.9 <br />Barium "195 1.0 96.2 125 QM-0575-12572.2 <br />Cadmium "84.0 2.0 96.2 0.911 75-12586.4 <br />Chromium "109 2.0 96.2 29.8 75-12582.6 <br />Lead "96.6 3.0 96.2 ND 75-125100 <br />Mike Jaroudi, Project Manager <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 />Page 61 of 69