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APTIM - Solid Waste Department <br />4171 Essen Lane <br />Baton Rouge, LA 70809 <br />Project: <br />Project Number: <br />Project Manager: <br />Foothill Landfill, SJ County <br />631038217 <br />Sandra Pimienta <br />Reported:01/22/2025 17:07 <br />Quality Control Report - Precision & Accuracy <br />Constituent Sample IDType Result Result Added Units RPD Recovery RPD Recovery Quals <br />Source Spike Percent Percent <br />Control Limits <br />Metals Analysis <br />Source Lab <br />R# <br />QC Batch ID: B204521 Used client sample: N <br />Total Aluminum DUP ND 2029.6002500656-04 ug/L 1 <br />MS 1008.0 75 - 12529.600 1000.0 97.82500656-04 ug/L 2 <br />MSD 1097.1 8.5 20 75 - 12529.600 1000.0 1072500656-04 ug/L 3 <br />Total Antimony DUP ND 20ND2500656-04 ug/L 1 <br />MS 379.00 75 - 125ND400.00 94.82500656-04 ug/L 2 <br />MSD 414.20 8.9 20 75 - 125ND400.00 1042500656-04 ug/L 3 <br />Total Arsenic DUP ND 20ND2500656-04 ug/L 1 <br />MS 186.50 75 - 125ND200.00 93.22500656-04 ug/L 2 <br />MSD 204.00 9.0 20 75 - 125ND200.00 1022500656-04 ug/L 3 <br />Total Barium DUP 49.100 0 2049.1002500656-04 ug/L 1 <br />MS 437.30 75 - 12549.100 400.00 97.02500656-04 ug/L 2 <br />MSD 474.50 8.2 20 75 - 12549.100 400.00 1062500656-04 ug/L 3 <br />Total Beryllium DUP ND 20ND2500656-04 ug/L 1 <br />MS 195.93 75 - 125ND200.00 98.02500656-04 ug/L 2 <br />MSD 214.44 9.0 20 75 - 125ND200.00 1072500656-04 ug/L 3 <br />Total Cadmium DUP ND 20ND2500656-04 ug/L 1 <br />MS 195.30 75 - 125ND200.00 97.62500656-04 ug/L 2 <br />MSD 213.90 9.1 20 75 - 125ND200.00 1072500656-04 ug/L 3 <br />Total Chromium DUP 1.1000 24.0 201.4000 J,A022500656-04 ug/L 1 <br />MS 198.70 75 - 1251.4000 200.00 98.62500656-04 ug/L 2 <br />MSD 217.80 9.2 20 75 - 1251.4000 200.00 1082500656-04 ug/L 3 <br />Total Cobalt DUP ND 20ND2500656-04 ug/L 1 <br />MS 195.00 75 - 125ND200.00 97.52500656-04 ug/L 2 <br />MSD 212.70 8.7 20 75 - 125ND200.00 1062500656-04 ug/L 3 <br />Total Copper DUP ND 201.20002500656-04 ug/L 1 <br />MS 380.80 75 - 1251.2000 400.00 94.92500656-04 ug/L 2 <br />MSD 416.50 9.0 20 75 - 1251.2000 400.00 1042500656-04 ug/L 3 <br />Total Iron DUP ND 20ND2500656-04 ug/L 1 <br />MS 1025.6 75 - 125ND1000.0 1032500656-04 ug/L 2 <br />MSD 1113.0 8.2 20 75 - 125ND1000.0 1112500656-04 ug/L 3 <br />Total Lead DUP ND 20ND2500656-04 ug/L 1 <br />MS 392.60 75 - 125ND400.00 98.22500656-04 ug/L 2 <br />MSD 428.00 8.6 20 75 - 125ND400.00 1072500656-04 ug/L 3 <br />Total Manganese DUP ND 20ND2500656-04 ug/L 1 <br />MS 505.20 75 - 125ND500.00 1012500656-04 ug/L 2 <br />MSD 549.50 8.4 20 75 - 125ND500.00 1102500656-04 ug/L 3 <br />Total Molybdenum DUP 1.2000 8.0 201.3000 J2500656-04 ug/L 1 <br />MS 201.90 75 - 1251.3000 200.00 1002500656-04 ug/L 2 <br />MSD 221.90 9.4 20 75 - 1251.3000 200.00 1102500656-04 ug/L 3 <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 />4100 Atlas Court Bakersfield, CA 93308 (661) 327-4911 FAX (661) 327-1918 www.pacelabs.com Page 38 of 40Report ID: 1001565394