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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 />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 />QC Batch ID: B159481 <br />Used client sample: Y - Description: AMW-47, 02/06/2023 11:16 <br />Benzene <br />MS <br />2302621-01 <br />ND <br />26.302 <br />25.000 <br />ug/L <br />105 <br />70-130 <br />1 <br />MSD <br />2302621-01 <br />ND <br />25.990 <br />25.000 <br />ug/L <br />1.2 <br />104 <br />20 <br />70-130 <br />2 <br />Bromodichloromethane <br />MS <br />2302621-01 <br />ND <br />27.787 <br />25.000 <br />ug/L <br />111 <br />70-130 <br />1 <br />MSD <br />2302621-01 <br />ND <br />26.908 <br />25.000 <br />ug/L <br />3.2 <br />108 <br />20 <br />70-130 <br />2 <br />Chlorobenzene <br />MS <br />2302621-01 <br />ND <br />26.182 <br />25.000 <br />ug/L <br />105 <br />70-130 <br />1 <br />MSD <br />2302621-01 <br />ND <br />25.989 <br />25.000 <br />ug/L <br />0.7 <br />104 <br />20 <br />70-130 <br />2 <br />Chloroethane <br />MS <br />2302621-01 <br />ND <br />25.059 <br />25.000 <br />ug/L <br />100 <br />70-130 <br />1 <br />MSD <br />2302621-01 <br />ND <br />23.601 <br />25.000 <br />ug/L <br />6.0 <br />94.4 <br />20 <br />70-130 <br />2 <br />1,4 -Dichlorobenzene <br />MS <br />2302621-01 <br />ND <br />27.514 <br />25.000 <br />ug/L <br />110 <br />70-130 <br />1 <br />MSD <br />2302621-01 <br />ND <br />27.227 <br />25.000 <br />ug/L <br />1.0 <br />109 <br />20 <br />70-130 <br />2 <br />1,1-Dichloroethane <br />MS <br />2302621-01 <br />ND <br />26.408 <br />25.000 <br />ug/L <br />106 <br />70-130 <br />1 <br />MSD <br />2302621-01 <br />ND <br />26.194 <br />25.000 <br />ug/L <br />0.8 <br />105 <br />20 <br />70-130 <br />2 <br />1,1-Dichloroethene <br />MS <br />2302621-01 <br />ND <br />28.855 <br />25.000 <br />ug/L <br />115 <br />70-130 <br />1 <br />MSD <br />2302621-01 <br />ND <br />28.323 <br />25.000 <br />ug/L <br />1.9 <br />113 <br />20 <br />70-130 <br />2 <br />Toluene <br />MS <br />2302621-01 <br />ND <br />26.772 <br />25.000 <br />ug/L <br />107 <br />70-130 <br />1 <br />MSD <br />2302621-01 <br />ND <br />25.976 <br />25.000 <br />ug/L <br />3.0 <br />104 <br />20 <br />70-130 <br />2 <br />Trichloroethene <br />MS <br />2302621-01 <br />ND <br />27.124 <br />25.000 <br />ug/L <br />108 <br />70-130 <br />1 <br />MSD <br />2302621-01 <br />ND <br />26.672 <br />25.000 <br />ug/L <br />1.7 <br />107 <br />20 <br />70-130 <br />2 <br />1,2-Dichloroethane-d4 (Surrogate) <br />MS <br />2302621-01 <br />ND <br />10.270 <br />10.000 <br />ug/L <br />103 <br />75-125 <br />1 <br />MSD <br />2302621-01 <br />ND <br />10.070 <br />10.000 <br />ug/L <br />2.0 <br />101 <br />75-125 <br />2 <br />Toluene -d8 (Surrogate) <br />MS <br />2302621-01 <br />ND <br />10.060 <br />10.000 <br />ug/L <br />101 <br />80-120 <br />1 <br />MSD <br />2302621-01 <br />ND <br />9.9800 <br />10.000 <br />ug/L <br />0.8 <br />99.8 <br />80-120 <br />2 <br />4-Bromofluorobenzene (Surrogate) <br />MS <br />2302621-01 <br />ND <br />10.170 <br />10.000 <br />ug/L <br />102 <br />80-120 <br />1 <br />MSD <br />2302621-01 <br />ND <br />10.250 <br />10.000 <br />ug/L <br />0.8 <br />102 <br />80-120 <br />2 <br />Run <br />Run # QC Sample ID <br />QC Type <br />Method <br />Prep Date <br />Date Time <br />Analyst <br />Instrument <br />Dilution <br />1 B159481 -MSI <br />MS <br />EPA -8260B <br />02/08/23 <br />02/08/23 21:03 <br />RCC <br />MS -V14 <br />1 <br />2 8159481-MSD1 <br />MSD <br />EPA -8260B <br />02/08/23 <br />02/08/2321:26 <br />RCC <br />MS -V14 <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 <br />use of the submitting <br />party. <br />Pace Analytical assumes no responsibility for <br />report alteration, <br />separation, detachment <br />or third party interpretation. <br />Report ID: 1001407804 <br />4100 Atlas <br />Court Bakersfield, CA 93308 (661) 327-4911 FAX (661) 327-1918 www.pacelabs.com <br />Page 43 of 58 <br />