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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 - 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 />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 35 of 58 <br />QC Batch ID: B159635 <br />Bolstar <br />Used client sample: <br />MS 2300342-16 <br />MSD 2300342-16 <br />N <br />ND <br />ND <br />1.4200 <br />1.4850 <br />2.0000 <br />2.0000 <br />ug/L <br />ug/L <br />4.5 <br />71.0 <br />74.2 <br />30 <br />60-120 1 <br />60-120 2 <br />Chlorpyrifos <br />MS <br />MSD <br />2300342-16 <br />2300342-16 <br />ND <br />ND <br />1.4400 <br />1.5500 <br />2.0000 <br />2.0000 <br />ug/L <br />ug/L <br />7.4 <br />72.0 <br />77.5 <br />30 <br />60-120 1 <br />60-120 2 <br />Diazinon <br />MS <br />MSD <br />2300342-16 <br />2300342-16 <br />ND <br />ND <br />1.2750 <br />1.2450 <br />2.0000 <br />2.0000 <br />ug/L <br />ug/L <br />2.4 <br />63.8 <br />62.2 <br />30 <br />60-130 1 <br />60-130 2 <br />Methyl parathion <br />MS <br />MSD <br />2300342-16 <br />2300342-16 <br />ND <br />ND <br />1.4650 <br />1.5400 <br />2.0000 <br />2.0000 <br />ug/L <br />ug/L <br />5.0 <br />73.2 <br />77.0 <br />30 <br />60-120 1 <br />60-120 2 <br />Mevinphos <br />MS <br />MSD <br />2300342-16 <br />2300342-16 <br />ND <br />ND <br />1.2700 <br />1.3300 <br />2.0000 <br />2.0000 <br />ug/L <br />ug/L <br />4.6 <br />63.5 <br />66.5 <br />30 <br />50-120 1 <br />50-120 2 <br />Ronnel (Fenchlorphos) <br />MS <br />MSD <br />2300342-16 <br />2300342-16 <br />ND <br />ND <br />1.6100 <br />1.5600 <br />2.0000 <br />2.0000 <br />ug/L <br />ug/L <br />3.2 <br />80.5 <br />78.0 <br />30 <br />50-120 1 <br />50-120 2 <br />Stirophos (Tetrachlorvinphos) <br />MS <br />MSD <br />2300342-16 <br />2300342-16 <br />ND <br />ND <br />1.3350 <br />1.2550 <br />2.0000 <br />2.0000 <br />ug/L <br />ug/L <br />6.2 <br />66.8 <br />62.8 <br />30 <br />50-120 1 <br />50-120 2 <br />Triphenylphosphate (Surrogate) <br />MS <br />MSD <br />2300342-16 <br />2300342-16 <br />ND <br />ND <br />2.6850 <br />2.6500 <br />2.5000 <br />2.5000 <br />ug/L <br />ug/L <br />1.3 <br />107 <br />106 <br />50-130 1 <br />50-130 2 <br />Run # QC Sample ID <br />QC Type <br />Method <br />Prep Date <br />Run <br />Date Time <br />Analyst <br />Instrument <br />Dilution <br />1 B159635-MS1 <br />MS <br />EPA -8141A <br />02/07/23 <br />02/08/2317:50 <br />NAP <br />GC -18 <br />1 <br />2 B159635-MSD1 <br />MSD <br />EPA -8141A <br />02/07/23 <br />02/08/2318:20 <br />NAP <br />GC -18 <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: 1001407804 4100 Atlas Court Bakersfield, CA 93308 (661) 327-4911 FAX (661) 327-1918 www.pacelabs.com Page 35 of 58 <br />