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<br />CALIFORNIA LABORATORY SERVICES <br /> <br />Page 6 of 8 <br />Committed. Responsive. Flexible. <br /> <br />03/15/22 13:13 <br />RAH Environmental, Inc. - Sacramento Project: Acampo/Woodbridge Road Excavation <br />4645 Raley Boulevard <br />Project Number: [none] CLS Work Order #: 22C0482 <br />Sacramento, CA 95838 <br />Project Manager: Raymond A. Henry Jr. COC #: 218707 <br />Metals by EPA 6000/7000 Series Methods - Quality Control <br />Reporting Spike Source %REC RPD <br />Analyte Result Limit Units Level Result %REC Limits RPD Limit Notes <br />Batch 2201927- EPA 3050B <br /> <br />Blank (2201927-BLK1) <br /> Prepared & Analyzed: 03/11/22 <br /> <br />Lead ND 2.5 mg/kg <br />LCS (2201927-BS1) <br /> Prepared 8c Analyzed: 03/11/22 <br /> <br />Lead 52.6 2.5 mg/kg 50.0 105 75-125 <br />Matrix Spike (2201927-MS1) <br /> <br />Source: 22C0662-01 Prepared & Analyzed: 03/11/22 <br /> <br />Lead 53.9 2.5 mg,/kg 50.0 6.22 95 75-125 <br />Matrix Spike Dup (2201927-MSD1) <br /> Source: 22C0662-01 Prepared & Analyzed: 03/11/22 <br /> <br />Lead 49.4 2.5 mg/kg 50.0 6.22 86 75-125 9 30 <br /> <br />3249 Fitzgerald Road, Rancho Cordova, CA 95742 I 800.638.7301 I Tel: 916.638.7301 x102 I Fax: 916.638.4510 I www.californialab.com <br />Small Business #2916 I ELAP #1233 I NAICS #541380 I CA SWRCB ELAP Accreditation/Registration Number 1233