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CALIFORNIA LABORATORY SERVICES <br />Committed. Responsive. Flexible. <br />02/26/21 14:12 <br />APEX Envirotech Inc. - Gold River Project: Panella Tracking <br />11291 Pyrites Wy. Suite B Project Number: [none] CLS Work Order #: 21131201 <br />Gold River, CA 95670 Project Manager: George Converse COC #: 211890/205920/205921 <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 2101529 - EPA 3050B <br />Blank (2101529-BLK1) <br />Prepared & Analyzed: 02/23/21 <br />Cadmium <br />ND <br />1.0 mg/kg <br />Chromium <br />ND <br />5.0 <br />Lead <br />ND <br />10 <br />Nickel <br />ND <br />10 <br />Zinc <br />ND <br />5.0 <br />LCS (2101529-BS1) <br />Prepared & Analyzed: 02/23/21 <br />Cadmium <br />95.8 <br />1.0 mg/kg <br />100 96 <br />75-125 <br />Chromium <br />95.8 <br />5.0 <br />100 96 <br />75-125 <br />Lead <br />107 <br />10 <br />100 107 <br />75-125 <br />Nickel <br />98.0 <br />10 <br />100 98 <br />75-125 <br />Zinc <br />91.9 <br />5.0 <br />100 92 <br />75-125 <br />Matrix Spike (2101529-MS1) <br />Source: 21131232-01 <br />Prepared & Analyzed: 02/23/21 <br />Cadmium <br />93.2 <br />1.0 mg/kg <br />100 0.331 93 <br />75-125 <br />Chromium <br />120 <br />5.0 <br />100 18.5 102 <br />75-125 <br />Lead <br />113 <br />10 <br />100 10.5 102 <br />75-125 <br />Nickel <br />101 <br />10 <br />100 ND 101 <br />75-125 <br />Zinc <br />126 <br />5.0 <br />100 26.6 99 <br />75-125 <br />Matrix Spike Dup (2101529-MSD1) <br />Source: 21B1232-01 <br />Prepared & Analyzed: 02/23/21 <br />Cadmium <br />92.2 <br />1.0 mg/kg <br />100 0.331 92 <br />75-125 <br />1 <br />30 <br />Chromium <br />115 <br />5.0 <br />100 18.5 96 <br />75-125 <br />4 <br />30 <br />Lead <br />112 <br />10 <br />100 10.5 102 <br />75-125 <br />0.4 <br />30 <br />Nickel <br />96.0 <br />10 <br />100 ND 96 <br />75-125 <br />5 <br />30 <br />Zinc <br />118 <br />5.0 <br />100 26.6 92 <br />75-125 <br />6 <br />30 <br />3249 Fitzgerald Road, Rancho Cordova, CA 95742 1 800.638.7301 1 Tel: 916.638.7301 x102 1 Fax: 916.638.4510 1 www.californialab.com <br />Small Business #2916 1 ELAP #1233 1 NAICS #541380 1 CA SWRCB ELAP Accreditation/Registration Number 1233 <br />