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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 />04/19/18 13:50Roseville 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 8041304 - EPA 3050B <br />Blank (8041304-BLK1)Prepared: 04/13/18 Analyzed: 04/16/18 <br />Arsenic mg/kgND5.0 <br />Lead "ND 3.0 <br />LCS (8041304-BS1)Prepared: 04/13/18 Analyzed: 04/16/18 <br />Arsenic mg/kg1035.0 100 75-125103 <br />Lead "108 3.0 100 75-125108 <br />Matrix Spike (8041304-MS1)Prepared: 04/13/18 Analyzed: 04/16/18 Source: T181234-01 <br />Arsenic mg/kg94.4 5.0 94.3 ND 75-125100 <br />Lead "94.7 3.0 94.3 0.0883 75-125100 <br />Matrix Spike Dup (8041304-MSD1)Prepared: 04/13/18 Analyzed: 04/16/18 Source: T181234-01 <br />Arsenic mg/kg96.3 5.0 94.3 ND 2075-125102 1.96 <br />Lead "101 3.0 94.3 0.0883 2075-125107 6.06 <br />Batch 8041305 - EPA 3050B <br />Blank (8041305-BLK1)Prepared: 04/13/18 Analyzed: 04/17/18 <br />Arsenic mg/kgND5.0 <br />Lead "ND 3.0 <br />LCS (8041305-BS1)Prepared: 04/13/18 Analyzed: 04/17/18 <br />Arsenic mg/kg1065.0 100 75-125106 <br />Lead "112 3.0 100 75-125112 <br />Matrix Spike (8041305-MS1)Prepared: 04/13/18 Analyzed: 04/17/18 Source: T181234-30 <br />Arsenic mg/kg1005.0 95.2 ND 75-125105 <br />Lead "105 3.0 95.2 ND 75-125110 <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 69 of 78