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__;5ccAn,-dy6crW <br /> .."RDn•tE NTA..SCIENCES <br /> Kleinfelder,Inc.-Rancho Cordova Reported: 07/06/2022 9:51 <br /> 2882 Prospect Park,Suite 200 Project: Tracy Costco UST Removal <br /> Rancho Cordova,CA 95670 Project Number. 20223491.001A <br /> Project Manager: Paolo Dizon <br /> Volatile Organic Analysis (EPA Method 826013/5035) <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 <br /> QC Batch ID: B143200 J Used client sample: N <br /> Benzene MS 2213962-61 ND 0.11726 0.12500 mg/kg 93.8 70-130 <br /> MSD 2213962-61 ND 0.11844 0.12500 mg/kg 1.0 94.8 20 70-130 <br /> Bromodichloromethane MS 2213962-61 ND 0.12544 0.12500 mg/kg 100 70-130 <br /> MSD 2213962-61 ND 0.12651 0.12500 mg/kg 0.8 101 20 70-130 <br /> Chlorobenzene MS 2213962-61 ND 0.12245 0.12500 mg/kg 98.0 70-130 <br /> MSD 2213962-61 ND 0.12272 0.12500 mg/kg 0.2 98.2 20 70-130 <br /> Chloroethane MS 2213962-61 ND 0.13403 0.12500 mg/kg 107 70-130 <br /> MSD 2213962-61 ND 0.13510 0.12500 mg/kg 0.8 108 20 70-130 <br /> 1,4-Dichlorobenzene MS 2213962-61 ND 0.12382 0.12500 mg/kg 99.1 70-130 <br /> MSD 2213962-61 ND 0.11983 0.12500 mg/kg 3.3 95.9 20 70-130 <br /> 1,1-Dichloroethane MS 2213962-61 ND 0.11810 0.12500 mg/kg 94.5 70-130 <br /> MSD 2213962-61 ND 0.11904 0.12500 mg/kg 0.8 95.2 20 70-130 <br /> 1,1-Dichloroethene MS 2213962-61 ND 0.11784 0.12500 mg/kg 94.3 70-130 <br /> MSD 2213962-61 ND 0.12006 0.12500 mg/kg 1.9 96.0 20 70-130 <br /> Toluene MS 2213962-61 ND 0.12260 0.12500 mg/kg 98.1 70-130 <br /> MSD 2213962-61 ND 0.12318 0.12500 mg/kg 0.5 98.5 20 70-130 <br /> Trichloroethene MS 2213962-61 ND 0.12577 0.12500 mg/kg 101 70-130 <br /> MSD 2213962-61 ND 0.12575 0.12500 mg/kg 0.0 101 20 70-130 <br /> 1,2-Dichloroethane-d4(Surrogate) MS 2213962-61 ND 0.045850 0.050000 mg/kg 91.7 70-121 <br /> MSD 2213962-61 ND 0.046440 0.050000 mg/kg 1.3 92.9 70-121 <br /> Toluene-d8(Surrogate) MS 2213962-61 ND 0.049480 0.050000 mg/kg 99.0 81-117 <br /> MSD 2213962-61 ND 0.049470 0.050000 mg/kg 0.0 98.9 81-117 <br /> 4-Bromofluorobenzene(Surrogate) MS 2213962-61 ND 0.050640 0.050000 mg/kg 101 74-121 <br /> MSD 2213962-61 ND 0.050460 0.050000 mg/kg 0.4 101 74-121 <br /> The results in this report apply to the samples analysed 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 /> ReportID: 1001323091 4100 Atlas Court Bakersfield,CA 93308 (661)327-4911 FAX(661)327-1918 www.pacelabs.com Page 19 of 23 <br />