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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 />Organo -Phosphorus Pesticide Analysis (EPA Method 8141A) <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: B159635 <br />Bolstar <br />B159635-BS1 <br />LCS <br />1.6200 <br />2.0000 <br />ug/L <br />81.0 <br />50-130 <br />1 <br />Chlorpyrifos <br />B159635-BS1 <br />LCS <br />1.5150 <br />2.0000 <br />ug/L <br />75.8 <br />60-120 <br />1 <br />Diazinon <br />B159635-BS1 <br />LCS <br />1.3100 <br />2.0000 <br />ug/L <br />65.5 <br />60-130 <br />1 <br />Methyl parathion <br />B159635-BS1 <br />LCS <br />1.7500 <br />2.0000 <br />ug/L <br />87.5 <br />60-120 <br />1 <br />Mevinphos <br />B159635-BS1 <br />LCS <br />1.3650 <br />2.0000 <br />ug/L <br />68.2 <br />50-120 <br />1 <br />Ronnel (Fenchlorphos) <br />B159635-BS1 <br />LCS <br />1.5950 <br />2.0000 <br />ug/L <br />79.8 <br />50-120 <br />1 <br />Stirophos (Tetrachlorvinphos) <br />B159635-BS1 <br />LCS <br />1.5350 <br />2.0000 <br />ug/L <br />76.8 <br />50-120 <br />1 <br />Triphenylphosphate (Surrogate) <br />B159635-BS1 <br />LCS <br />2.6850 <br />2.5000 <br />ug/L <br />107 <br />50-130 <br />1 <br />Run <br />Run # QC Sample ID QC Type Method Prep Date Date Time Analyst Instrument Dilution <br />1 B159635-BS1 LCS EPA -8141A 02/07/23 02/08/2317:21 NAP GC -18 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 34 of 58 <br />