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CALIFORNIA LABORATORY SERVICES <br />Committed. Responsive. Flexible. <br />Nage 4 OT 4 •"i UgLllzJ UY:J9 <br />Tetra Tech Geo Project: Clean Harbors Forward Landfill <br />3 10 t Zinfandel Drive Suite 200 Project Number: 117-127827-25004 CLS Work Order #: 2561200 <br />Rancho Cordova, CA 95670 Project Manager: Katie Hendrickson COC #: <br />Notes and Definitions <br />Q94 The surrogate recovery for this sample is outside of established control limits due to a sample matrix effect. <br />QRL-8 The extract of this sample was dark and/or oily. Therefore, the sample was analyzed with a dilution and the reporting limit was <br />raised for all target compounds. <br />QR -1 The RPD value for the sample duplicate or MS/MSD was outside of the QC acceptance limits due to matrix interference. QC batch <br />accepted based on LCS and/or LCSD recovery. <br />DET Analyte DETECTED <br />ND Analyte NOT DETECTED at or above the reporting limit (or method detection limit when specified) <br />NR Not Reported <br />dry Sample results reported on a dry weight basis <br />RPD Relative Percent Difference <br />3249 Fitzgerald Road Rancho Cordova, CA 95742 1800.638.7301 1 Tel: 916.638.7301 x102 1 Fax: 916.638.4510 1 v. v✓, v.callfomialob.com <br />Small Business #2916 1 ELAP #1233 1 NAICS #541380 1 CA SWRCB ELAP Accreditaflon/Registration Number 1233 <br />For regulatory purposes, please refer to vN,w califomialab.com(certlficatlons to find a list of approved analytes by method. <br />