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ENYIRCNMENTA! BCIEHCEB <br />Arcadis- SLO Reported: 02/14/2023 8:06 <br />735 Tank Farm Rd, Suite 150 Project: Forward Landfill <br />San Luis Obispo, CA 93401 Project Number: 30110749 <br />Project Manager: Drew Feucht <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 R# <br />Trichloroethene <br />MS <br />MSD <br />2302982-01 <br />2302982-01 <br />ND <br />ND <br />24.850 <br />24.180 <br />25.000 <br />25.000 <br />ug/L <br />ug/L <br />2.7 <br />99.4 <br />96.7 <br />QC Batch ID: B159717 <br />Used client sample: <br />N <br />MS <br />MSD <br />2302982-01 <br />2302982-01 <br />ND <br />ND <br />9.7100 <br />9.6200 <br />10.000 <br />10.000 <br />1,1-Dichloroethene <br />MS 2302982-01 <br />ND <br />25.920 <br />25.000 <br />ug/L <br />104 <br />70-130 <br />3 <br />9.9700 <br />9.7700 <br />MSD 2302982-01 <br />ND <br />24.760 <br />25.000 <br />ug/L <br />4.6 99.0 <br />20 70-130 <br />4 <br />Toluene <br />MS 2302982-01 <br />ND <br />24.310 <br />25.000 <br />ug/L <br />97.2 <br />70-130 <br />3 <br />MSD 2302982-01 <br />ND <br />23.320 <br />25.000 <br />ug/L <br />4.2 93.3 <br />20 70-130 <br />4 <br />Trichloroethene <br />MS <br />MSD <br />2302982-01 <br />2302982-01 <br />ND <br />ND <br />24.850 <br />24.180 <br />25.000 <br />25.000 <br />ug/L <br />ug/L <br />2.7 <br />99.4 <br />96.7 <br />70-130 <br />20 70-130 <br />3 <br />4 <br />1,2-Dichloroethane-d4 (Surrogate) <br />MS <br />MSD <br />2302982-01 <br />2302982-01 <br />ND <br />ND <br />9.7100 <br />9.6200 <br />10.000 <br />10.000 <br />ug/L <br />ug/L <br />0.9 <br />97.1 <br />96.2 <br />75-125 <br />75-125 <br />3 <br />4 <br />Toluene -d8 (Surrogate) <br />MS <br />MSD <br />2302982-01 <br />2302982-01 <br />ND <br />ND <br />9.9700 <br />9.7700 <br />10.000 <br />10.000 <br />ug/L <br />ug/L <br />2.0 <br />99.7 <br />97.7 <br />80-120 <br />80-120 <br />3 <br />4 <br />4-Bromofluorobenzene (Surrogate) <br />MS <br />MSD <br />2302982-01 <br />2302982-01 <br />ND <br />ND <br />10.120 <br />10.340 <br />10.000 <br />10.000 <br />ug/L <br />ug/L <br />2.2 <br />101 <br />103 <br />80-120 <br />80-120 <br />3 <br />4 <br />1 <br />B159716-MS1 <br />MS <br />EPA -8260B <br />02/13/23 <br />02/13/2312:02 <br />MGC <br />MS -V5 <br />1 <br />2 <br />B159716-MSD1 <br />MSD <br />EPA -8260B <br />02/13/23 <br />02/13/2312:26 <br />MGC <br />MS -V5 <br />1 <br />3 <br />8159717-MS1 <br />MS <br />EPA -8260B <br />02/13/23 <br />02/13/2316:02 <br />MGC <br />MS -V5 <br />1 <br />4 <br />B159717-MSD1 <br />MSD <br />EPA -8260B <br />02/13/23 <br />02/13/2316:26 <br />MGC <br />MS -V5 <br />1 <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: 1001397271 4100 Atlas Court Bakersfield, CA 93308 (661) 327-4911 FAX (661) 327-1918 www.pacelabs.com Page 29 of 30 <br />