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En:irou•[NTA:;ciEuCes <br /> i <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 /> 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: B142226 Used client sample: N <br /> Benzene MS 2213962-22 ND 0.13169 0.12500 mg/kg 105 70-130 <br /> MSD 2213962-22 ND 0.12394 0.12500 mg/kg 6.1 99.2 20 70-130 <br /> Bromodichloromethane MS 2213962-22 ND 0.13343 0.12500 mg/kg 107 70-130 <br /> MSD 2213962-22 ND 0.12822 0.12500 mg/kg 4.0 103 20 70-130 <br /> Chlorobenzene MS 2213962-22 ND 0.13251 0.12500 mg/kg 106 70-130 <br /> MSD 2213962-22 ND 0.12606 0.12500 mg/kg 5.0 101 20 70-130 <br /> Chloroethane MS 2213962-22 ND 0.13635 0.12500 mg/kg 109 70-130 <br /> MSD 2213962-22 ND 0.12459 0.12500 mg/kg 9.0 99.7 20 70-130 <br /> 1,4-Dichlorobenzene MS 2213962-22 ND 0.13328 0.12500 mg/kg 107 70-130 <br /> MSD 2213962-22 ND 0.12800 0.12500 mg/kg 4.0 102 20 70-130 <br /> 1,1-Dichloroethane MS 2213962-22 ND 0.13101 0.12500 mg/kg 105 70-130 <br /> MSD 2213962-22 ND 0.12290 0.12500 mg/kg 6.4 98.3 20 70-130 <br /> 1,1-Dichloroethene MS 2213962-22 ND 0.12341 0.12500 mg/kg 98.7 70-130 <br /> MSD 2213962-22 ND 0.11182 0.12500 mg/kg 9.9 89.5 20 70-130 <br /> Toluene MS 2213962-22 ND 0.12685 0.12500 mg/kg 101 70-130 <br /> MSD 2213962-22 ND 0.11902 0.12500 mg/kg 6.4 95.2 20 70-130 <br /> Trichloroethene MS 2213962-22 ND 0.12444 0.12500 mg/kg 99.6 70-130 <br /> MSD 2213962-22 ND 0.11526 0.12500 mg/kg 7.7 92.2 20 70-130 <br /> 1,2-Dichloroethane-d4(Surrogate) MS 2213962-22 ND 0.048270 0.050000 mg/kg 96.5 70-121 <br /> MSD 2213962-22 ND 0.047770 0.050000 mg/kg 1.0 95.5 70-121 <br /> Toluene-d8(Surrogate) MS 2213962-22 ND 0.050800 0.050000 mg/kg 102 81-117 <br /> MSD 2213962-22 ND 0.050650 0.050000 mg/kg 0.3 101 81-117 <br /> 4-Bromofluorobenzene(Surrogate) MS 2213962-22 ND 0.050530 0.050000 mg/kg 101 74-121 <br /> MSD 2213962-22 ND 0.049620 0.050000 mg/kg 1.8 99.2 74-121 <br /> The results in this report apply to the samples analyzed in accordance w-ith the chain of custody document.lhis analytical report must he reproduced in its emhety. <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: 1001318187 4100 Atlas Court Bakersfield,CA 93308 (661)327-4911 FAX(661)327-1918 www.pacelabs.com Page 75 of 79 <br />