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ENYIRCNMENTA! BCIEHCEB <br />Arcadis- SLO Reported: <br />03/21/2023 8:38 <br />735 Tank Farm Rd, Suite 150 Project: <br />Forward Landfill <br />San Luis Obispo, CA 93401 Project Number: <br />30110745.01 <br />Project Manager: <br />Drew Feucht <br />Chlorinated Herbicides (EPA Method 8151A) <br />Quality Control Report - Laboratory Control Sample <br />Control Limits <br />Spike Percent Percent Lab <br />Constituent QC Sample ID Type Result Level Units Recovery RPD Recovery RPD Quals Run # <br />QC Batch ID: B159636 <br />2,4-D <br />B159636-BS1 <br />LCS <br />2.1200 <br />2.4000 <br />ug/L <br />88.3 <br />50-120 <br />1 <br />2,4 -DB <br />B159636-BS1 <br />LCS <br />6.1400 <br />5.4000 <br />ug/L <br />114 <br />50-120 <br />1 <br />Dicamba <br />B159636-BS1 <br />LCS <br />0.60000 <br />0.60000 <br />ug/L <br />100 <br />50-120 <br />1 <br />Dichloroprop <br />B159636-BS1 <br />LCS <br />1.9900 <br />2.4000 <br />ug/L <br />82.9 <br />50-120 <br />1 <br />Dinoseb <br />B159636-BS1 <br />LCS <br />1.1100 <br />1.2000 <br />ug/L <br />92.5 <br />50-120 <br />1 <br />2,4,5-T <br />B159636-BS1 <br />LCS <br />0.48000 <br />0.60000 <br />ug/L <br />80.0 <br />40-120 <br />1 <br />2,4,5 -TP (Silvex) <br />B159636-BS1 <br />LCS <br />0.58000 <br />0.60000 <br />ug/L <br />96.7 <br />50-120 <br />1 <br />2,4-Dichlorophenylacetic acid (Surrogate) B159636-BS1 <br />LCS <br />3.8800 <br />4.0000 <br />ug/L <br />97.0 <br />40-120 <br />1 <br />Run <br />Run # QC Sample ID QC Type Method Prep Date Date Time Analyst Instrument Dilution <br />B159636-BS1 LCS EPA -8151A 02/08/23 02/09/2312:44 NAP GC -8 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: 1001407804 4100 Atlas Court Bakersfield, CA 93308 (661) 327-4911 FAX (661) 327-1918 www.pacelabs.com Page 37 of 58 <br />