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CALIFORNIA LABORATORY SERVICES <br /> Committed. Responsive. Flexible. <br /> Page 6 of 12 08/06/21 18:20 <br /> ACT Enviro Project: Tower Park Marina Resort <br /> 4 Wayne Court#9 Project Number: [none] CLS Work Order#:21G1745 <br /> Sacramento,CA 95829 Project Manager: Jeff Freitas COC#: <br /> Metals by EPA 6000/7000 Series Methods-Quality Control <br /> Reporting Spike Source °/.REC RPD <br /> Analyte Result Limit Units Level Result "/6REC Limits RPD Limit Notes <br /> Batch 2106523-EPA 3050B <br /> Blank(2106523-BLK1) Prepared&Analyzed:08/06/21 <br /> Arsenic ND 2.0 mg/kg <br /> Chromium ND 1.0 " <br /> Copper ND 1.0 " <br /> LCS(2106523-BSI) Prepared&Analyzed:08/06/21 <br /> Arsenic 85.2 2.0 mg/kg 100 85 75-125 <br /> Chromium 84.2 1.0 100 84 75-125 <br /> Copper 81.2 1.0 100 81 75-125 <br /> Matrix Spike(2106523-MSI) Source:21HO118-01 Prepared&Analyzed:08/06/21 <br /> Arsenic 83.8 2.0 mg/kg 100 2.85 81 75-125 <br /> Chromium 92.2 1.0 100 13.4 79 75-125 <br /> Copper 115 1.0 100 41.3 73 75-125 QM-5 <br /> Matrix Spike Dup(2106523-MSD1) Source:21HO118-01 Prepared&Analyzed:08/06/21 <br /> Arsenic 85.5 2.0 mg/kg 100 2.85 83 75-125 2 30 <br /> Chromium 90.3 1.0 100 13.4 77 75-125 2 30 <br /> Copper 113 1.0 100 41.3 72 75-125 1 30 QM-5 <br /> 3249 Fitzgerald Rood,Rancho Cordova,CA 95742 1800.638.7301 1 Tel:916.638.7301 x102 1 Fax:916.638.4510 1 www.californialob.com <br /> Small Business#2916 1 ELAP#1233 1 NAICS#541380 1 CA SWRCB ELAP Accreditation/Registration Number 1233 <br />