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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 Acre Property <br />04/17/18 15:58Roseville 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 6020 Method - Quality Control <br />SunStar Laboratories, Inc. <br />Batch 8041135 - EPA 3010A <br />Matrix Spike (8041135-MS1)Prepared: 04/11/18 Analyzed: 04/17/18 Source: T181153-05 <br />Arsenic ug/l62.4 1.0 50.0 19.8 AO-175-12585.2 <br />Barium "363 1.0 50.0 341 AO-1, <br />QM-05 <br />75-12544.9 <br />Cadmium "45.9 1.0 50.0 1.59 AO-175-12588.7 <br />Chromium "107 1.0 50.0 59.6 AO-175-12594.3 <br />Lead "368 2.0 50.0 361 AO-1, <br />QM-05 <br />75-12512.3 <br />Matrix Spike Dup (8041135-MSD1)Prepared: 04/11/18 Analyzed: 04/17/18 Source: T181153-05 <br />Arsenic ug/l61.3 1.0 50.0 19.8 20 AO-175-12582.9 1.81 <br />Barium "372 1.0 50.0 341 20 AO-1, <br />QM-05 <br />75-12562.8 2.43 <br />Cadmium "45.7 1.0 50.0 1.59 20 AO-175-12588.2 0.541 <br />Chromium "107 1.0 50.0 59.6 20 AO-175-12594.9 0.296 <br />Lead "389 2.0 50.0 361 20 AO-1, <br />QM-05 <br />75-12555.4 5.69 <br />Post Spike (8041135-PS1)Prepared: 04/11/18 Analyzed: 04/17/18 Source: T181153-05 <br />Barium ug/l188 2.50 0.341 AO-1, <br />QM-05 <br />80-120NR <br />Lead "199 2.50 0.361 AO-1, <br />QM-05 <br />80-120NR <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 10 of 11