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ENYIRCNMENTA! BCIEHCEB <br />Arcadis- SLO Reported: 03/20/2023 11:27 <br />735 Tank Farm Rd, Suite 150 Project: Forward Landfill <br />San Luis Obispo, CA 93401 Project Number: 30110749.01 <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 />2302933-01 <br />2302933-01 <br />ND <br />ND <br />23.540 <br />23.780 <br />25.000 <br />25.000 <br />ug/L <br />ug/L <br />1.0 <br />94.2 <br />95.1 <br />QC Batch ID: 8159827 <br />Used client sample: <br />N <br />MS <br />MSD <br />2302933-01 <br />2302933-01 <br />ND <br />ND <br />9.8500 <br />10.470 <br />10.000 <br />10.000 <br />1,1-Dichloroethene <br />MS 2302933-01 <br />ND <br />23.900 <br />25.000 <br />ug/L <br />95.6 <br />70-130 <br />3 <br />9.8800 <br />9.7700 <br />MSD 2302933-01 <br />ND <br />24.530 <br />25.000 <br />ug/L <br />2.6 98.1 <br />20 70-130 <br />4 <br />Toluene <br />MS 2302933-01 <br />ND <br />22.270 <br />25.000 <br />ug/L <br />89.1 <br />70-130 <br />3 <br />MSD 2302933-01 <br />ND <br />22.560 <br />25.000 <br />ug/L <br />1.3 90.2 <br />20 70-130 <br />4 <br />Trichloroethene <br />MS <br />MSD <br />2302933-01 <br />2302933-01 <br />ND <br />ND <br />23.540 <br />23.780 <br />25.000 <br />25.000 <br />ug/L <br />ug/L <br />1.0 <br />94.2 <br />95.1 <br />70-130 <br />20 70-130 <br />3 <br />4 <br />1,2-Dichloroethane-d4 (Surrogate) <br />MS <br />MSD <br />2302933-01 <br />2302933-01 <br />ND <br />ND <br />9.8500 <br />10.470 <br />10.000 <br />10.000 <br />ug/L <br />ug/L <br />6.1 <br />98.5 <br />105 <br />75-125 <br />75-125 <br />3 <br />4 <br />Toluene -d8 (Surrogate) <br />MS <br />MSD <br />2302933-01 <br />2302933-01 <br />ND <br />ND <br />9.8800 <br />9.7700 <br />10.000 <br />10.000 <br />ug/L <br />ug/L <br />1.1 <br />98.8 <br />97.7 <br />80-120 <br />80-120 <br />3 <br />4 <br />4-Bromofluorobenzene (Surrogate) <br />MS <br />MSD <br />2302933-01 <br />2302933-01 <br />ND <br />ND <br />9.6500 <br />9.6600 <br />10.000 <br />10.000 <br />ug/L <br />ug/L <br />0.1 <br />96.5 <br />96.6 <br />80-120 <br />80-120 <br />3 <br />4 <br />1 <br />B159514-MS1 <br />MS <br />EPA -8260B <br />02/08/23 <br />02/09/2311:36 <br />TDH <br />MS -V15 <br />1 <br />2 <br />B159514-MSD1 <br />MSD <br />EPA -8260B <br />02/08/23 <br />02/09/2312:00 <br />TDH <br />MS -V15 <br />1 <br />3 <br />8159827-MS1 <br />MS <br />EPA -8260B <br />02/14/23 <br />02/14/2314:55 <br />TDH <br />MS -V15 <br />1 <br />4 <br />B159827-MSD1 <br />MSD <br />EPA -8260B <br />02/14/23 <br />02/14/2315:43 <br />TDH <br />MS -V15 <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: 1001407430 4100 Atlas Court Bakersfield, CA 93308 (661) 327-4911 FAX (661) 327-1918 www.pacelabs.com Page 32 of 45 <br />