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7r=V5L <br /> Laboratories Inc. , <br /> Environmental Testing Laboratory Since 1949 <br /> Ground Zero Analysis, Inc. Reported: 04/02/2019 15:06 <br /> 1172 Kansas Avenue Project: Woolsey-Lodi <br /> Modesto,CA 95351 Project Number: 156 <br /> Project Manager: Project Manager <br /> Volatile Organic Analysis (EPA Method 82606) <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: B041595 Used client sample: N <br /> Benzene MS 1909362-19 ND 27.738 25.000 ug/L 111 70-130 <br /> MSD 1909362-19 ND 26.915 25.000 ug/L 3.0 108 20 70-130 <br /> Toluene MS 1909362-19 ND 26.992 25.000 ug/L 108 70-130 <br /> MSD 1909362-19 ND 26.393 25.000 ug/L 2.2 106 20 70-130 <br /> 1,2-Dichloroethane-d4(Surrogate) MS 1909362-19 ND 10.870 10.000 ug/L 109 75-125 <br /> MSD 1909362-19 ND 10.050 10.000 ug/L 7.8 100 75-125 <br /> Toluene-d8(Surrogate) MS 1909362-19 ND 10.420 10.000 ug/L 104 80-120 <br /> MSD 1909362-19 ND 10.200 10.000 ug/L 2.1 102 80-120 <br /> 4-Bromofluorobenzene(Surrogate) MS 1909362-19 ND 9.7900 10.000 ug/L 97.9 80-120 <br /> MSD 1909362-19 ND 10.240 10.000 ug/L 4.5 102 80-120 <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. BC Laboratories,Inc.assumes no responsibility for report alteration,separation,detachment or third party interpretation. <br /> Report ID: 1000869861 4100 Atlas Court Bakersfield,CA 93308 (661)327-4911 FAX(661)327-1918 www.bclabs.com Page 19 of 23 <br />