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Table 2 A ARCO D I S Groundwater Elevations Forward Landfill Quarterly Monitoring Report-First Quarter 2026 9999 South Austin Road San Joaquin County,California Well Number AFMW-29S AMW-29 i i i pth to Water(feet below TOC) 9/23/13 71.16 71.10 70.88 70.61 64.63 64.69 61.39 61.38 11/8/13 69.84 69.97 72.81 72.85 62.81 62.84 59.14 59.13 2/5/14 69.45 69.54 73.40 72.40 62.87 62.94 59.79 59.76 4/17/14 69.48 69.59 72.37 72.42 64.21 64.29 65.10 65.61 6/3/14-6/4/14 -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- 8/11-12/14 74.39 74.50 77.44 77.52 67.13 67.19 65.51 65.54 11/14/14 73.54 74.63 76.49 76.54 66.00 66.05 62.78 62.82 2/17-23/15 70.29 70.38 73.71 73.73 61.21 61.28 58.32 58.37 5/19-26/2015 72.18 72.27 75.14 75.22 64.95 65.00 62.48 62.47 8/19/2015-9/3/2015 76.99 77.05 79.79 79.83 70.37 70.44 68.02 68.00 10/28/2015 77.49 77.58 80.66 80.66 69.53 69.58 65.48 65.94 11/16/2015-12/15/2015 -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- 2/4-17/2016 74.01 74.12 78.45 78.40 61.49 61.51 58.05 58.24 5/2-16/16 69.73 69.85 74.09 74.11 59.38 59.41 56.48 56.60 8/8/16-8/10/16 76.87 76.94 79.64 79.74 68.70 68.70 67.25 67.29 10/26/2016-11/8/2016 78.28 78.36 81.56 81.58 69.41 69.45 65.71 65.69 11/14/2016 -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- 2/27/2017 -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- 5/23-30/17 66.36 66.50 71.20 71.23 56.02 56.08 55.37 55.98 8/1-31/17 69.94 70.03 73.03 73.13 61.90 61.94 59.48 59.60 9/17/2017 -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- 11/1/17 70.97 71.05 74.17 74.21 62.45 62.50 58.68 58.67 2/5/18-2/8/18 69.75 69.83 73.20 73.22 60.64 60.69 56.78 56.76 4/30/18-5/18/18 70.30 70.38 72.88 72.96 59.02 59.06 55.37 55.43 8/1/18-10/18 73.71 73.82 77.25 77.33 68.09 68.15 67.72 67.79 9/13-21/18 -- -- -- -- -- -- -- -- 66.74 66.74 73.82 74.80 81.70 90.83 90.76 60.55 60.40 60.55 60.40 10/31/18-11/26/18 75.64 75.75 79.06 79.06 66.37 66.42 62.58 62.55 66.20 66.09 74.31 74.60 77.10 90.74 90.62 58.79 58.46 61.97 61.43 12/2/2018 -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- 1/10/2019 -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- 1/30/19-2/26/19 72.82 72.92 76.89 76.88 61.49 61.54 58.11 58.19 64.02 63.88 73.00 72.72 73.98 88.62 88.52 56.78 56.28 56.68 56.56 3/15-20/2019 -- -- -- -- -- -- -- -- 61.79 62.09 -- -- -- -- -- -- -- -- -- 5/13/19;5/20/19;6/4/19 68.74 68.86 73.37 73.45 56.44 56.48 53.01 53.13 61.88 62.02 69.90 69.91 73.50 86.21 86.22 55.51 56.05 51.81 51.86 51.65 52.68 8/5/2019;8/8/19;8/16/19;8/26/19 72.11 72.18 75.34 75.49 63.41 63.44 60.79 60.77 64.97 65.26 70.88 71.69 82.78 88.55 88.58 57.46 57.21 60.05 59.50 59.84 60.93 11/18/19;11/21/19;11/25/19 71.56 71.64 75.01 75.05 62.12 62.17 58.22 58.20 62.98 62.80 71.68 71.85 75.35 89.29 89.10 55.66 55.23 57.58 57.02 58.54 59.68 1/23/20;1/28/20;2/4/20 70.17 70.25 74.08 74.08 60.19 60.15 56.48 56.46 61.65 61.39 70.82 70.74 72.54 87.57 87.36 54.02 53.66 55.74 55.16 57.43 58.10 5/7/20;5/12-13/20;6/1/20;6/15/20 69.93 70.04 73.55 73.64 59.29 59.33 56.33 56.38 61.00 60.98 69.27 69.45 76.13 87.10 87.04 54.62 55.08 55.50 55.16 55.78 57.18 7/27/20;7/29/20;8/3-6/20;8/31/2020 72.78 72.88 76.80 76.95 65.19 65.21 64.29 64.56 66.20 66.77 72.40 73.32 82.18 90.20 90.03 60.76 59.88 62.98 62.92 63.00 64.37 63.33 63.37 64.31 64.35 65.48 11/2/20;11/4/20;11/6/20;11/9/20;11/12/20 75.39 75.30 78.72 78.80 65.72 65.76 62.03 61.98 65.56 65.45 73.26 73.53 76.95 91.58 91.38 58.76 58.92 61.42 60.80 62.89 63.78 62.70 62.73 64.79 64.82 67.18 1/23/21;1/27/21;1/29/21;2/2/21 74.50 74.58 78.28 78.31 64.46 64.50 60.60 60.55 63.94 63.75 72.45 72.46 74.48 90.00 89.78 56.45 56.05 59.96 59.38 60.79 60.54 61.03 60.98 63.05 63.03 65.82 4/30/21;5/5-7/21;5/10/21;5/24/21 75.14 75.18 78.73 78.77 64.30 64.35 61.78 61.85 64.44 64.80 70.92 71.50 76.85 89.92 89.84 1 58.32 58.33 60.84 60.59 51.43 62.52 61.50 61.58 62.82 62.90 64.81 7/23/21;7/29/21;8/3/21;8/4/21;8/5/21 77.00 77.07 80.97 81.03 68.54 68.57 67.68 67.68 67.74 67.94 73.29 74.35 84.60 92.50 92.36 63.47 65.75 66.72 66.53 65.62 66.52 66.59 66.59 66.62 66.68 66.69 11/1/21;11/9/21;11/10/21;12/10/21 77.75 77.85 81.69 81.68 67.82 67.86 64.85 64.79 66.94 66.90 74.12 74.42 78.19 93.03 93.00 59.87 59.45 64.28 63.67 65.38 66.48 65.38 65.37 66.13 66.12 67.03 1/21/22;1/27/22;1/31/22;2/1/22 75.62 75.71 80.25 80.22 63.82 63.86 60.78 60.78 65.00 64.82 72.83 73.12 75.72 91.38 91.18 58.05 57.58 59.78 59.43 60.37 61.35 60.45 60.52 61.21 61.42 62.00 5/5/22;5/10/22;5/11/22;5/12/22 70.96 77.05 80.80 80.85 66.14 66.18 63.30 63.32 65.91 65.96 72.32 72.82 77.72 90.92 90.80 59.18 59.06 63.06 63.68 63.72 65.05 63.68 63.83 65.03 65.08 66.72 7/27/22;8/2/22;8/3/22;8/4/22 82.23 82.31 86.10 86.12 74.16 74.22 73.59 73.72 70.60 71.40 74.60 76.20 89.20 95.12 95.10 64.75 64.95 72.97 72.88 73.51 75.62 72.74 73.69 73 73.43 74.06 10/28/22;11/4/22;11/7/22;11/9/22 84.80 84.87 89.25 89.27 74.50 74.55 70.84 70.75 71.30 71.25 77.20 78.34 84.75 98.15 98.00 63.56 63.20 70.54 69.74 72.40 73.20 72.87 72 74.27 74.12 76.67 1/24/23-2/22/23 80.53 80.65 86.88 86.78 56.48 56.48 40.89 41.28 66.90 66.20 76.45 76.82 80.02 97.08 97.05 59.42 58.21 31.35 31.95 36.43 33.58 31.58 34 35.49 40.12 42.10 5/8/23-6/14/23 66.75 66.90 73.75 73.75 47.23 47.30 41.15 41.24 60.05 62.20 70.17 70.46 73.65 92.14 92.15 49.76 49.08 39.80 39.40 41.00 41.56 40.96 41.04 42.05 43.03 45.18 7/24/23,7/31/23,8/3/23,8/4/23,8/7/23 72.15 72.30 77.20 77.30 56.45 56.50 53.70 53.90 62.00 61.92 71.20 72.15 86.00 93.47 93.35 54.08 54.61 52.80 54.00 50.80 52.00 52.02 52.24 51.80 52.20 53.50 11/2/23,11/8/23,11/9/23 71.88 71.98 76.88 76.86 59.42 59.46 54.92 54.88 60.50 60.24 71.25 71.40 76.50 93.20 93.00 51.55 1 51.25 54.17 53.46 55.99 56.67 55.76 55.78 57.90 57.93 60.40 1/17/24,1/19/24,1/29/24,1/30/24,1/31/24 70.65 70.77 75.35 75.39 58.55 58.57 54.04 53.99 59.31 58.98 69.54 69.75 72.98 90.40 96.16 50.36 50.03 53.38 52.63 55.35 56.01 55.06 55.08 1 57.34 57.35 59.84 5/2/24,5/10/24,5/13/24,5/14/24 67.15 67.26 72.26 72.28 53.99 54.02 50.28 50.29 57.43 57.91 65.59 66.40 70.29 87.05 86.70 48.77 48.25 49.80 49.15 50.07 51.20 50.38 50.51 51.68 51.89 54.03 7/26/2024 71.23 71.36 76.19 76.21 57.90 57.92 54.41 54.40 57.42 57.39 66.28 66.87 76.60 88.00 88.47 49.45 49.50 53.89 53.45 54.96 56.12 54.94 54.47 56.46 56.61 58.90 11/7/2024 71.05 71.13 75.36 75.37 59.88 59.91 55.87 55.80 58.15 58.02 67.25 67.59 73.29 88.77 88.60 50.76 50.43 55.43 54.70 57.01 57.90 56.85 56.83 58.93 58.96 61.64 1/27/2025,217/2025,2/8/2025,2/10/2025- 69.50 69.60 73.96 74.00 58.52 58.60 54.72 64.69 57.95 57.75 65.72 66.35 70.00 86.60 86.50 50.00 50.00 54.10 53.50 54.62 55.45 55.16 55.24 57.42 57.42 60.14 2/12/2025 5/7/2025,5/20/2025,5/22/2025,5/23/2025, 68.05 68.14 72.60 72.65 56.95 57.00 53.52 53.75 60.00 61.15 64.65 65.22 70.35 84.90 84.76 50.65 53.70 52.90 52.50 53.90 54.94 54.00 54.00 55.55 55.64 57.95 5/26/2025 7/29/2025,817/2025,8/8/2025 73.12 73.20 77.60 77.68 61.15 61.18 58.40 58.40 59.42 59.60 67.15 67.95 82.20 89.20 89.15 53.55 56.30 57.95 57.50 58.90 60.24 58.96 59.00 60.18 60.25 62.45 11/3/2025,11/5/2025,11/12/2025,11/17/2025, 72.10 72.15 1 76.50 76.50 61.85 61.90 52.28 58.20 59.67 59.55 68.34 68.85 74.40 90.40 90.15 52.25 51.94 57.86 57.20 59.32 60.35 59.25 59.20 61.11 61.11 63.65 11/21/2025 12/1/2025 12/5/2025 1/27/2026;2/2/2026;2/5/2026;2/6/2026 69.90 70.00 1 74.85 74.80 57.90 57.95 54.65 54.70 1 58.35 58.15 66.32 67.12 72.15 1 88.15 1 88.00 50.45 50.15 53.45 53.10 54.03 55.15 54.20 54.15 55.50 1 55.70 57.70 5/10