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ENYIRCNMENTA! BCIEHCEB <br />Arcadis- SLO Reported: 02/07/2023 16:03 <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 />1,2-Dichloroethane-d4 (Surrogate) MS 2302095-01 ND 10.370 10.000 ug/L 104 75-125 3 <br />MSD 2302095-01 ND 10.480 10.000 ug/L 1.1 105 75-125 4 <br />Toluene -d8 (Surrogate) MS <br />2302095-01 <br />ND <br />MSD <br />2302095-01 <br />ND <br />4-Bromofluorobenzene (Surrogate) MS <br />2302095-01 <br />ND <br />MSD <br />QC Batch ID: B159158 <br />Used client sample: <br />N <br />02/02/23 <br />02/03/2314:59 <br />TDH <br />MS -V15 <br />1 <br />3 <br />1,1-Dichloroethene <br />MS 2302095-01 <br />ND <br />22.600 <br />02/06/2314:04 <br />25.000 <br />ug/L <br />90.4 <br />70-130 <br />3 <br />MSD <br />MSD 2302095-01 <br />ND <br />25.660 <br />TDH <br />25.000 <br />ug/L <br />12.7 103 <br />20 70-130 <br />4 <br />Toluene <br />MS 2302095-01 <br />ND <br />19.600 <br />25.000 <br />ug/L <br />78.4 <br />70-130 <br />3 <br />MSD 2302095-01 <br />ND <br />23.020 <br />25.000 <br />ug/L <br />16.0 92.1 <br />20 70-130 <br />4 <br />Trichloroethene <br />MS 2302095-01 <br />1.2800 <br />21.390 <br />25.000 <br />ug/L <br />80.4 <br />70-130 <br />3 <br />MSD 2302095-01 <br />1.2800 <br />24.570 <br />25.000 <br />ug/L <br />13.8 93.2 <br />20 70-130 <br />4 <br />1,2-Dichloroethane-d4 (Surrogate) MS 2302095-01 ND 10.370 10.000 ug/L 104 75-125 3 <br />MSD 2302095-01 ND 10.480 10.000 ug/L 1.1 105 75-125 4 <br />Toluene -d8 (Surrogate) MS <br />2302095-01 <br />ND <br />MSD <br />2302095-01 <br />ND <br />4-Bromofluorobenzene (Surrogate) MS <br />2302095-01 <br />ND <br />MSD <br />2302095-01 <br />ND <br />9.9900 10.000 ug/L 99.9 80-120 3 <br />10.250 10.000 ug/L 2.6 102 80-120 4 <br />9.8400 10.000 ug/L 98.4 80-120 3 <br />9.9800 10.000 ug/L 1.4 99.8 80-120 4 <br />1 <br />B159157-MS1 <br />MS <br />EPA -8260B <br />02/02/23 <br />02/03/2314:35 <br />TDH <br />MS -V15 <br />1 <br />2 <br />B159157-MSD1 <br />MSD <br />EPA -8260B <br />02/02/23 <br />02/03/2314:59 <br />TDH <br />MS -V15 <br />1 <br />3 <br />8159158-MS1 <br />MS <br />EPA -8260B <br />02/06/23 <br />02/06/2314:04 <br />TDH <br />MS -V15 <br />1 <br />4 <br />B159158-MSD1 <br />MSD <br />EPA -8260B <br />02/06/23 <br />02/06/2314:28 <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: 1001395793 4100 Atlas Court Bakersfield, CA 93308 (661) 327-4911 FAX (661) 327-1918 www.pacelabs.com Page 36 of 44 <br />