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ENYIRCNMENTA! BCIEHCEB <br />Arcadis- SLO Reported: <br />02/27/2023 9:56 <br />735 Tank Farm Rd, Suite 150 Project: <br />Forward Landfill <br />San Luis Obispo, CA 93401 Project Number: <br />30110749.01 <br />Project Manager: <br />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 MS 2302734-04 ND 23.010 25.000 ug/L 92.0 70-130 3 <br />MSD 2302734-04 ND 24.390 25.000 ug/L 5.8 97.6 20 70-130 4 <br />1,2-Dichloroethane-d4 (Surrogate) MS 2302734-04 ND 9.1900 10.000 ug/L 91.9 75-125 3 <br />MSD 2302734-04 ND 9.6700 10.000 ug/L 5.1 96.7 75-125 4 <br />Toluene -d8 (Surrogate) MS <br />2302734-04 <br />ND <br />9.9900 <br />10.000 <br />ug/L <br />99.9 <br />80-120 3 <br />QC Batch ID: B159469 <br />Used client sample: <br />N <br />9.9900 <br />10.000 <br />ug/L <br />0 99.9 <br />1,1-Dichloroethene <br />MS 2302734-04 <br />ND <br />23.950 <br />25.000 <br />ug/L <br />95.8 <br />70-130 <br />3 <br />80-120 3 <br />MSD 2302734-04 <br />ND <br />24.750 <br />25.000 <br />ug/L <br />3.3 99.0 <br />20 70-130 <br />4 <br />Toluene <br />MS 2302734-04 <br />ND <br />23.030 <br />25.000 <br />ug/L <br />92.1 <br />70-130 <br />3 <br />MSD 2302734-04 <br />ND <br />23.740 <br />25.000 <br />ug/L <br />3.0 95.0 <br />20 70-130 <br />4 <br />Trichloroethene MS 2302734-04 ND 23.010 25.000 ug/L 92.0 70-130 3 <br />MSD 2302734-04 ND 24.390 25.000 ug/L 5.8 97.6 20 70-130 4 <br />1,2-Dichloroethane-d4 (Surrogate) MS 2302734-04 ND 9.1900 10.000 ug/L 91.9 75-125 3 <br />MSD 2302734-04 ND 9.6700 10.000 ug/L 5.1 96.7 75-125 4 <br />Toluene -d8 (Surrogate) MS <br />2302734-04 <br />ND <br />9.9900 <br />10.000 <br />ug/L <br />99.9 <br />80-120 3 <br />MSD <br />2302734-04 <br />ND <br />9.9900 <br />10.000 <br />ug/L <br />0 99.9 <br />80-120 4 <br />4-Bromofluorobenzene (Surrogate) MS <br />2302734-04 <br />ND <br />10.180 <br />10.000 <br />ug/L <br />102 <br />80-120 3 <br />MSD <br />2302734-04 <br />ND <br />10.280 <br />10.000 <br />ug/L <br />1.0 103 <br />80-120 4 <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: 1001401191 4100 Atlas Court Bakersfield, CA 93308 (661) 327-4911 FAX (661) 327-1918 www.pacelabs.com Page 67 of 82 <br />