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ce Analytical <br /> EN VIRCNMENTA!SCIENCES <br /> Ground Zero Analysis, Inc.-Modesto Reported: 07/23/2024 11:27 <br /> 1172 Kansas Avenue Project: Stallworth Auto-EDF <br /> Modesto,CA 95351 Project Number: 602N.California St.Stockton,CA <br /> Project Manager: Greg Stahl <br /> Total Petroleum Hydrocarbons <br /> Quality Control Report - Precision & Accuracy <br /> Control Limits <br /> Source Source Spike Percent Percent Lab <br /> Constituent Type Sample ID Result Result Added Units RPD Recovery RPD Recovery Quals R# <br /> QC Batch ID: B192404 Used client sample: N <br /> TPH-Diesel Range Organics MS 2410574-02 10.506 141.22 16.779 mg/kg 779 49-120 Q03 1 <br /> (C10-C28) <br /> MSD 2410574-02 10.506 129.53 16.892 mg/kg 8.6 705 30 49-120 Q03 2 <br /> Tetracosane(Surrogate) MS 2410574-02 ND 0.85235 0.67114 mg/kg 127 40-130 1 <br /> MSD 2410574-02 ND 0.82601 0.67568 mg/kg 3.1 122 40-130 2 <br /> Run <br /> Run# QC Sample ID QC Type Method Prep Date Date Time Analyst Instrument Dilution <br /> 1 B192404-MS1 MS EPA-8015B/CC 07/08/24 07/08/2415:19 BUP GC-19 10.067 <br /> 1 B192404-MS1 MS EPA-8015B/CC 07/08/24 07/08/2415:19 BUP GC-19 10.067 <br /> 2 B192404-MSD1 MSD EPA-8015B/CC 07/08/24 07/08/2415:37 BUP GC-19 10.135 <br /> 2 B192404-MSD1 MSD EPA-8015B/CC 07/08/24 07/08/2415:37 BUP GC-19 10.135 <br /> The results in this report apply to the samples analyzed in accordance with the chain of custody document.This analytical report must be reproduced in its entirety. <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 party interpretation. <br /> Report ID: 1001524132 4100 Atlas Court Bakersfield,CA 93308 (661)327-4911 FAX(661)327-1918 www.pacelabs.com Page 34 of 35 <br />