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�r <br />17dl icdl <br />ENVIR6NMENTAL SCIENCES <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 />Water Analysis (General Chemistry) <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 Rf1 <br />QC Batch ID: B159507 Used client sample: N <br />Dissolved Cyanide DUP 2302300-09 ND ND /L 10 11 <br />MS 2302300-09 ND 0.10683 0.10000 /L 107 90-110 12 <br />MSD 2302300-09 ND 0.10525 0.10000 /L 1.5 105 10 90-110 13 <br />QC Batch ID: B159531 <br />Used client sample: <br />N <br />Total Dissolved Solids @ 180 C <br />DUP 2302620-01 <br />663.33 <br />653.33 <br />mg/L <br />1.5 <br />10 <br />14 <br />QC Batch ID: B159601 <br />Used client sample: <br />N <br />Chemical Oxygen Demand <br />DUP 2302693-01 <br />72.885 <br />64.295 <br />mg 02/L <br />12.5 <br />20 <br />15 <br />MS 2302693-01 <br />72.885 <br />964.96 <br />882.35 <br />mg 02/L <br />101 <br />80-120 <br />16 <br />MSD 2302693-01 <br />72.885 <br />954.85 <br />882.35 <br />mg 02/1- <br />1.1 <br />100 <br />20 <br />80-120 <br />17 <br />QC Batch ID: B159602 <br />Used client sample: <br />Y - Description: AMW-47, 02/06/2023 11:16 <br />Dissolved Sulfide <br />DUP 2302621-01 <br />ND <br />ND <br />mg/L <br />10 <br />18 <br />MS 2302621-01 <br />ND <br />0.52120 <br />0.50000 <br />mg/L <br />104 <br />80-120 <br />19 <br />MSD 2302621-01 <br />ND <br />0.51204 <br />0.50000 <br />mg/L <br />1.8 <br />102 <br />10 <br />80-120 <br />20 <br />QC Batch ID: B160054 Used client sample: Y - Description: AMW-47, 02/06/2023 11:16 <br />Total Organic Carbon DUP 2302621-01 1.9240 1.9230 mg/L 0.1 10 21 <br />MS 2302621-01 1.9240 6.7698 5.0251 mg/L 96.4 80-120 22 <br />MSD 2302621-01 1.9240 6.8583 5.0251 mg/L 1.3 98.2 10 80-120 23 <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 49 of 58 <br />