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_ ace Analytical m <br /> ENVIRONMENTAL SCIENCES <br /> 1 <br /> Kleinfelder,Inc.-Rancho Cordova Reported: 06/21/2022 14:57 <br /> 2882 Prospect Park,Suite 200 Project: Tracy Costco UST Removal <br /> Rancho Cordova,CA 95670 Project Number: 20223491.00A <br /> Project Manager: Paolo Dizon <br /> Total Concentrations (TTLC) <br /> BCL Sample ID: 2214240-02 Client Sample Name: P-2,6/17/2022 9:55:OOAM <br /> MB Lab <br /> Constituent Result Units PQL MDL Method Bias Quals DCN <br /> Lead 6.6 mg/kg 2.5 0.41 EPA-60108 ND 1 <br /> Run QC <br /> DCN Method Prep Date Date/Time Analyst Instrument Dilution Batch ID Prep Method <br /> 1 EPA-6010B 06/20/22 12:51 06/21/22 10:07 JCC PE-OP3 0.971 B142314 EPA 3050B <br /> DCN=Data Continuation Number <br /> The re.suliv in this report apply to the samples analj_ed in accorclattce frith the chain of custody doeumew.l%tis atta/rtical report mart be reproduced in m en irely. <br /> All results listed in this report are for the exclusive use of the submitting party. Pace Analytical assumes no responsibility for report alteration,separation,detachment or third parry interpretation. <br /> ReportID: 1001318187 4100 Atlas Court Bakersfield,CA 93308 (661)327-4911 FAX(661)327-1918 www.pacelabs.com Page 18 of 79 <br />