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ENYIRCNMENTA! BCIEHCEB <br />Arcadis- SLO Reported: <br />02/27/2023 9:56 <br />735 Tank Farm Rd, Suite 150 Project: <br />Forward Landfill <br />San Luis Obispo, CA 93401 Project Number: <br />30110749.01 <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 />:onstituent Type Sample ID Result Result Added Units RPD Recovery RPD Recovery Quals RI <br />QC Batch ID: B158285 <br />Used client sample: <br />N <br />Bicarbonate <br />DUP 2302119-01 <br />208.50 <br />210.53 <br />mg/L <br />1.0 <br />10 <br />1 <br />Carbonate <br />DUP 2302119-01 <br />ND <br />ND <br />mg/L <br />10 <br />1 <br />QC Batch ID: B158286 <br />Used client sample: <br />Y - Description: AMW-36, 02/01/2023 14:18 <br />Bicarbonate <br />DUP 2302300-07 <br />123.35 <br />124.28 <br />mg/L <br />0.7 <br />10 <br />2 <br />Carbonate <br />DUP 2302300-07 <br />ND <br />ND <br />mg/L <br />10 <br />2 <br />QC Batch ID: B159168 <br />Used client sample: Y - Description: AMW-35, 02/01/2023 09:51 <br />Chloride <br />DUP 2302300-01 <br />53.942 <br />51.650 <br />mg/L <br />4.3 <br />10 <br />3 <br />MS 2302300-01 <br />53.942 <br />166.04 <br />101.01 <br />mg/L <br />111 <br />80-120 <br />4 <br />MSD 2302300-01 <br />53.942 <br />166.21 <br />101.01 <br />mg/L <br />0.1 <br />111 <br />10 <br />80-120 <br />5 <br />Nitrate as N <br />DUP 2302300-01 <br />22.023 <br />22.898 <br />mg/L <br />3.9 <br />10 <br />3 <br />MS 2302300-01 <br />22.023 <br />33.574 <br />10.101 <br />mg/L <br />114 <br />80-120 <br />4 <br />MSD 2302300-01 <br />22.023 <br />33.630 <br />10.101 <br />mg/L <br />0.2 <br />115 <br />10 <br />80-120 <br />5 <br />Sulfate <br />DUP 2302300-01 <br />50.031 <br />46.026 <br />mg/L <br />8.3 <br />10 <br />3 <br />MS 2302300-01 <br />50.031 <br />276.93 <br />202.02 <br />mg/L <br />112 <br />80-120 <br />4 <br />MSD 2302300-01 <br />50.031 <br />277.44 <br />202.02 <br />mg/L <br />0.2 <br />113 <br />10 <br />80-120 <br />5 <br />QC Batch ID: B159227 <br />Used client sample: N <br />Total Kjeldahl Nitrogen <br />DUP 2302241-02 <br />ND <br />ND <br />mg/L <br />20 <br />6 <br />MS 2302241-02 <br />ND <br />2.0674 <br />2.0000 <br />mg/L <br />103 <br />90-110 <br />7 <br />MSD 2302241-02 <br />ND <br />2.0066 <br />2.0000 <br />mg/L <br />3.0 <br />100 <br />20 <br />90-110 <br />8 <br />QC Batch ID: B159262 <br />Used client sample: <br />N <br />Dissolved Calcium <br />DUP 2302270-01 <br />50.020 <br />49.948 <br />mg/L <br />0.1 <br />20 <br />9 <br />MS 2302270-01 <br />50.020 <br />62.940 <br />10.204 <br />mg/L <br />127 <br />75-125 <br />A03 10 <br />MSD 2302270-01 <br />50.020 <br />61.012 <br />10.204 <br />mg/L <br />3.1 <br />108 <br />20 <br />75-125 <br />11 <br />Dissolved Magnesium <br />DUP 2302270-01 <br />15.188 <br />14.988 <br />mg/L <br />1.3 <br />20 <br />9 <br />MS 2302270-01 <br />15.188 <br />26.570 <br />10.204 <br />mg/L <br />112 <br />75-125 <br />10 <br />MSD 2302270-01 <br />15.188 <br />26.400 <br />10.204 <br />mg/L <br />0.6 <br />110 <br />20 <br />75-125 <br />11 <br />Dissolved Sodium <br />DUP 2302270-01 <br />91.419 <br />91.447 <br />mg/L <br />0.0 <br />20 <br />9 <br />MS 2302270-01 <br />91.419 <br />104.15 <br />10.204 <br />mg/L <br />125 <br />75-125 <br />10 <br />MSD 2302270-01 <br />91.419 <br />101.90 <br />10.204 <br />mg/L <br />2.2 <br />103 <br />20 <br />75-125 <br />11 <br />Dissolved Potassium <br />DUP 2302270-01 <br />2.8024 <br />2.7286 <br />mg/L <br />2.7 <br />20 <br />9 <br />MS 2302270-01 <br />2.8024 <br />14.922 <br />10.204 <br />mg/L <br />119 <br />75-125 <br />10 <br />MSD 2302270-01 <br />2.8024 <br />14.686 <br />10.204 <br />mg/L <br />1.6 <br />116 <br />20 <br />75-125 <br />11 <br />QC Batch ID: B159290 <br />Used client sample: N <br />Dissolved Sulfide <br />DUP 2302157-01 <br />ND <br />ND <br />mg/L <br />10 <br />12 <br />MS 2302157-01 <br />ND <br />0.48820 <br />0.50000 <br />mg/L <br />97.6 <br />80-120 <br />13 <br />MSD 2302157-01 <br />ND <br />0.49006 <br />0.50000 <br />mg/L <br />0.4 <br />98.0 <br />10 <br />80-120 <br />14 <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 <br />Analytical assumes no responsibility for <br />report alteration, <br />separation, <br />detachment <br />or third party interpretation. <br />Report ID: 1001401191 <br />4100 Atlas Court Bakersfield, <br />CA 93308 <br />(661) 327-4911 <br />FAX (661) 327-1918 www.pacelabs.com <br />Page 73 of 82 <br />