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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 AMW-6 AMW-7 -F AMW- AMW-26R AMW-28 AMW-1 1 AMW-12 AMW-13 AMW7-13BAMW-14 AIVIW-1� WF-18B AMW-1 9 AMW- AMW-21S AMW-21 W-22S AMW-23D AMW-24R AMW-25-22S WAAMW-231 Liquid Elevation(feet MSL) 9/23/13 24.00E-2612 24.55 24.27 25.23 24.95 27.10 26.07 25.79 26.17 28.21 28.50 27.09 27.12 25.16 24.27 29.70 30.22 31.37 29.90 28.07 11/8/13 -22.89 -23.15 -21.58 -23.75 -23.74 -26.99 -24.94 -24.25 -25.40 -28.48 -27.70 -27.15 -27.23 -23.06 -22.20 -- -- -- -- -- 2/5/14 -21.94 -22.54 -22.13 -21.36 -23.23 -22.31 -25.46 -24.00 -23.75 -- -26.93 -27.07 -25.55 -25.58 -23.48 -24.04 4/17/14 -21.43 -21.64 -21.87 -22.19 -22.98 -21.56 -25.27 -24.27 -24.03 -- -27.11 -27.64 -25.34 -26.38 -28.27 -28.76 -- -- -- -- -- 6/3/14-6/4/14 -- -- -- -- -- -- -- -- -- -26.11 -- -- -- -- -- -- -26.99 -26.80 -30.40 -31.24 -31.43 -29.35 -28.87 8/11-12/14 -22.91 -29.39 -27.68 -27.61 -25.72 -25.46 -30.10 -27.80 -27.87 -28.17 -31.70 -32.22 -30.38 -30.34 -29.01 -29.02 -29.89 -29.66 -33.32 -34.00 -35.87 -32.69 -32.46 11/14/14 -24.95 -27.29 -26.47 -26.21 -25.92 -25.72 -29.46 -27.49 -27.52 -27.86 -30.92 -30.84 -29.70 -29.66 -26.49 -26.54 -28.43 -28.23 -32.27 -32.68 -34.20 -30.82 -27.41 2/17-18/15 -15.85 -22.80 -20.41 -19.92 -18.23 -19.04 -25.64 -22.40 -22.42 -23.05 -28.30 -28.01 -26.03 -26.01 -22.19 -22.18 -24.56 -24.33 -30.15 -30.51 -32.20 -28.48 -24.96 2/23/2015 -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- 5/19/2015-5/26/15 -24.85 -25.52 -25.52 -25.08 -25.36 -25.02 -27.99 -26.13 -26.17 -26.41 -29.91 -29.71 -28.29 -28.26 -26.04 -26.06 -27.24 -27.03 -30.58 -30.87 -32.30 -30.45 -30.15 8/19/2015 -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- 9/1-3/15 -30.53 -30.54 -31.32 -31.03 -31.22 -31.11 -32.93 -31.62 -31.62 -31.86 -34.47 -34.67 -33.18 -33.06 -31.36 -31.40 -32.34 -32.14 -35.68 -36.38 -38.03 -34.73 -33.60 10/28/15 -30.11 DRY -30.28 -29.35 -30.78 -30.27 -33.31 -31.27 -31.28 -31.80 DRY -34.60 -33.42 -33.39 -29.83 -29.87 -- -- -35.48 -35.79 -37.21 -34.29 -- 11/16/2015-12/15/2015 -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -30.53 -30.36 -- -30.11 2/4/2016-2/17/2016 -14.88 -24.21 -20.02 -18.11 -17.10 -18.44 -27.27 -22.21 -22.67 -23.17 -31.51 -31.37 -27.69 -27.71 -22.60 -22.63 -26.09 -25.84 -33.97 -34.18 -35.90 -31.96 -27.80 5/2-16/2016 -16.18 -20.42 -18.71 -17.81 -17.78 -17.28 -24.18 -20.48 -20.52 -21.09 -28.04 -27.92 -24.72 -24.77 -20.59 -20.60 -23.55 -23.35 -31.16 -31.55 -33.90 -30.11 -26.78 8/8-10/16 -28.01 -30.24 -29.65 -29.53 -28.89 -28.28 -32.56 -29.75 -29.81 -30.37 -40.58 -33.04 -33.05 -30.36 -30.38 -30.84 -30.66 -35.93 -36.20 -36.77 -34.45 -33.99 10/26/16-11/8/16 -30.09 -30.26 -29.10 -30.67 -30.40 -33.82 -31.27 -31.29 -31.94 -35.29 -34.08 -33.96 -29.59 -29.67 -31.41 -31.20 -36.26 -36.55 -37.73 -34.23 -30.72 11/14/2016 -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- 2/13/2017-3/10/2017 -5.02 -22.52 -14.03 -11.92 -11.96 -9.59 -25.06 -17.66 -17.65 -18.77 -30.86 -30.09 -25.84 -25.85 -18.20 -18.26 -19.68 -19.41 -33.61 -33.88 -35.88 -31.09 -23.79 5/23-30/2017 -12.58 -15.92 -15.75 -14.78 -16.32 -14.60 -20.44 -16.67 -16.69 -17.40 -24.57 -24.42 -20.95 -20.93 -19.78 -19.73 -19.49 -19.30 -28.40 -29.38 -33.48 -26.35 -22.79 8/1-31/2017 -19.41 -22.64 -22.05 -21.65 -23.55 -20.77 -25.54 -22.87 -22.92 -23.30 -28.40 -28.87 -26.14 -26.18 -23.53 -23.57 -25.66 -25.50 -29.64 -30.33 -32.54 -29.03 -27.93 9/17/2017,11/1-13/2017 -22.61 -24.80 -23.37 -22.20 -25.72 -23.25 -26.65 -24.30 -24.30 -25.10 -28.85 -28.64 -26.94 -26.80 -22.63 -22.70 -24.93 -24.72 -30.52 -31.01 -33.16 -28.64 -24.59 12/2/2018 -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- 2/5-8/2018 -20.69 -22.30 -21.23 -20.07 -23.87 -21.26 -25.22 -22.55 -22.57 -23.37 -27.80 -27.50 -25.54 -25.42 -20.75 -20.83 -23.39 -23.19 -29.73 -30.01 -31.73 -27.00 -23.28 4/30/18-5/29/18 -18.07 -20.29 -19.53 -18.17 -19.60 -25.73 -21.04 -24.63 -22.21 -29.90 -35.57 -26.59 -26.66 -19.45 -19.52 -25.49 -25.31 -29.73 -30.11 -30.84 -26.19 -23.32 8/1/18-10/18 -25.79 -28.08 -27.47 -29.22 -29.43 -25.94 -28.83 -28.00 -29.38 -27.41 -31.43 -31.33 -29.18 -28.99 -30.98 -30.97 -29.01 -28.82 -33.32 -33.80 -36.02 -30.96 -29.91 9/13-21/18 -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- 10/31/2018-11/26/2018 -26.60 -28.75 -27.08 -26.06 -27.10 -30.97 -28.21 -29.55 -28.94 -33.65 -33.22 -31.33 -31.23 -26.45 -26.55 -28.83 -28.62 -35.24 -35.43 -36.82 -31.65 -28.01 1/10/19-2/1/19 -15.24 -23.93 -20.30 -19.40 -18.71 -27.30 -22.89 -24.22 -23.92 -30.92 -30.33 -27.79 -27.73 -22.22 -22.31 -25.47 -25.26 -32.84 -33.07 -34.55 -29.57 -25.64 2/26/2019 -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- 3/15-20/2019 -- -- -- -- -- -- -- -- -- -27.29 -- -- -- -- -- -- -- 5/13/19;5/20/19;5/28/19 6/4/19 -15.48 -18.85 -17.62 -16.22 -17.58 -23.00 -18.43 -19.78 -19.86 -27.13 -32.55 -23.64 -23.70 -17.02 -17.09 -20.86 -20.73 23.05 23.18 25.05 -29.63 -30.06 -31.29 -26.21 -23.30 8/5/2019;8/8/19;8/16/19;8/26/19 -20.72 -24.25 -23.16 -22.62 -21.69 -27.38 -24.38 -25.74 -24.94 -30.44 -30.39 -27.85 -27.74 -24.56 -24.59 -25.67 -25.48 -27.49 -27.52 -29.50 -31.31 -31.59 -32.69 -28.60 -27.47 11/18/19;11/21/19;11/25/19 -22.11 -25.05 -23.03 -21.78 -22.29 -26.89 -24.02 -25.34 -24.90 -29.20 -29.12 -27.24 -26.64 -22.23 -22.29 -24.81 -24.64 -26.63 -26.65 -27.54 -31.15 -31.49 -33.22 -28.21 -24.43 1/23/20;1/28/20;2/4/20 -19.15 -21.92 -20.07 -19.35 -19.29 -25.07 -21.75 -22.11 -22.57 -28.06 -27.87 -25.49 -24.96 -20.48 -20.53 -23.19 -22.97 -25.05 -25.12 -25.80 -30.32 -30.62 -32.29 -27.07 -22.78 5/7/20;5/12-13/20;6/1/20;6/25/20 -17.3 -20.7 -19.47 -18.95 -17.2 -24.81 -20.59 -21.93 -21.44 -28.61 -28.87 -25.42 -24.93 -20.32 -20.36 -23.73 -23.53 -24.97 -25.12 -28.65 -29.75 -30.13 -30.99 -25.95 -27.11 7/27/20;7/29/20;8/3-6/20;8/31/20 -21.73 -25.82 -24.33 -24.73 -21.62 -27.57 -25.23 -26.6 -25.25 -31.01 -31.46 -27.99 -27.59 -27.92 -27.91 -25.54 -27.32 -27.6 -27.76 -31.01 -33.55 -34.27 -36.35 -30.11 -29.46 11/2/20;11/4/20;11/6/20;11/9/20;11/12/20 -25.09 -28.56 -26.35 -25.38 -25.64 -30.66 -27.29 -28.62 -28.35 -33.5 -33.23 -31.44 -30.27 -25.99 -26.03 -26.83 -28.61 -30.44 -30.44 -31.33 -34.94 -35.01 -35.69 -30.99 -27.5 1/23/21;1/27/21;1/29/21;2/2/21 -24.1 -27.06 -25.03 -23.83 -25.14 -29.65 -26.25 -27.58 -27.29 -32.08 -31.82 -29.99 -29.53 -24.52 -24.58 -25.5 -27.29 -29.92 -29.02 -28.49 -33.45 -33.67 -34.59 -29.67 -25.68 4/30/21;5/5-7/21;5/10/21;5/24/21 -23 -26.69 -24.76 -23.87 -24.24 -30.01 -25.7 -27.06 -26.87 -33.62 -33.39 -30.52 -30.09 -25.51 -25.58 -25.66 -27.45 -29.62 -29.64 -31.5 -34.54 -34.27 -33.81 -29.23 -28.97 7/23/21;7/29/21;8/3/21;8/4/21;8/5/21 -24.72 -30.42 -28.15 -28.1 -26.39 -31.96 -28.95 -30.3 -29.4 -34.16 -37.72 -32.43 -31.9 -30.64 -30.66 -30.29 -30.16 -31.52 -31.78 -34.49 -34.86 1 -35.15 -35.59 -31.95 -31.43 11/1/21;11/9/21;11/10/21;12/10/21 -25.7 -28.25 -27.37 -27.24 -32.83 -29.08 1 -30.43 -30.3 -34.92 -34.72 -33.13 -32.55 -28.48 -28.53 -29.99 -29.84 -31.97 -31.95 -32.62 -35.92 -35.98 -36.45 -32.23 -28.63 1/21/22;1/27/22;1/31/22;2/1/22 -20.66 -26.85 -23.7 -22.82 -22.72 -29.74 -25.1 -26.45 -26.2 -33.2 -32.76 -30.22 -29.68 -24.63 -24.66 -27.15 -26.96 -29.07 -29.22 -30.01 -34.7 -34.71 -35.39 -30.75 -27.23 5/5/22;5/10/22;5/11-12/22 -24.56 -28.89 -26.97 -26.24 -25.43 -31.74 -27.51 -28.83 -28.67 -34.21 -36.91 -32.28 -31.78 -26.91 -26.97 -28.75 -28.61 -31.19 -31.4 -33.97 -34.92 -34.97 -35.16 -37.56 -29.08 7/27/22;8/2/22;8/3-4/22 -31.44 -34.17 -35.11 -32.18 -37.12 -34.24 -35.94 -34.77 -42.37 -39.42 -37.53 -37.09 -36.43 -36.44 -35.11 -35 -36.38 -36.61 -39.72 -38.82 -38.8 -37.96 -34.62 -35.69 10/28/22;11/4/22;11/7-9/22 -34.63 -35.83 -34.6 -34.99 -39.64 -36.2 -37.53 -37.27 -41.13 -41.19 -39.89 -39.3 -34.61 -34.68 -36.09 -35.96 -38.12 -38.05 -38.9 -40.97 -40.87 -40.67 -36.68 -34.18 1/24/23-2/22/23 -0.7 -11.39 -9.63 4.6 -0.09 -27.71 -17.4 -18.76 -18.85 -38.91 -37.5 -29.49 -29.15 -14.14 -14.26 -23.09 -22.86 -31.45 -30.73 -31.47 -39.04 -39.67 -39.79 -34.45 -23.08 5/8/23-6/14/23 4.69 -12.39 -9.09 -5.3 -7.42 -18.66 -9.9 -11.25 -12.82 -25.32 -24.99 -19.47 -19.17 -6.54 -6.64 -14.76 -16.57 -19.07 -19.45 -21.07 -30.35 -30.69 -32.85 -24.89 -20.43 7/24/23,7/31/23,8/3/23,8/4-7/23 -11.78 -19.29 -17.05 -14.9 -16.44 -25.31 -17.95 -19.33 -20.06 -30.83 -36.54 -26.24 -25.8 -17.96 -17.98 -21.51 -21.36 -25.32 -25.9 -31 -32.32 -32.7 -33.79 -26.98 -24.68 11/2/23,11/8/23,11/9/23 -18.23 -22.63 -20.02 -18.4 -19.31 -26.09 -21.28 -22.75 -22.81 -29.54 -29.34 -26.71 -26.25 -19.18 -19.25 -22.63 -22.45 -25.33 -25.43 -26.69 -32.1 -32.37 -33.94 -26.88 -21.53 1/17/24,1/19/24,1/29/24,1/30/24,1/31/24 -17.28 -21.29 -18.82 -17.55 -17.74 -25.05 -20.15 -21.75 -26.12 -28.41 -28.15 -25.34 -24.79 -18.26 -18.35 -21.04 -20.84 -24.31 -24.41 -25.31 -30.97 -31.14 -32.5 -25.78 -21.05 5/2/24,5/10/24,5/13-14/24 -11.88 -18.08 -14.37 -13.05 -13.09 -20.79 -15.67 -17.01 -17.06 -25.02 -24.73 -21.39 -20.89 -14.3 -14.3 -16.44 -18.23 -20.58 -22.18 -20.49 -27.79 -27.9 -29.1 -22.92 -19.53 7/26/24,8/6/24,817/24,8/8/24 -16.96 -23.09 -19.99 -17.99 -12.95 -24.99 -19.08 -21.09 -21.42 -28.39 -23.61 -25.44 -24.92 -18.17 -15.46 -19.66 -21.46 -23.64 -23.74 -26.15 -26.85 -29.64 -29.54 -23.47 -20.08 1117/24,11/21/24,11/22/24 -19.88 -24.47 -21.05 -19.51 -20.43 -25.88 -21.75 -23.08 -23.09 -28.18 -27.97 -26.18 -25.73 -19.81 -19.9 -20.44 -22.29 -24.46 -24.6 -25.64 -29.47 -29.54 -30.09 -24.44 -20.26 1/27/2025,217/2025,2/8/2025,2/10/2025- -18.42 -22.09 -19.40 -17.95 -18.98 -24.21 -20.27 -21.58 -21.47 -26.85 -26.59 -24.58 -23.99 -20.66 -18.70 -20.71 -20.56 -22.92 -23.10 -24.11 -28.51 -28.44 -28.97 -23.44 -19.89 2/12/2025 5/7/2025,5/20/2025,5/22/2025,5/23/2025, -16.06 -20.17 -17.49 -16.54 -17.44 -22.41 -18.30 -19.65 -19.36 -25.60 -25.94 -22.86 -22.28 -17.67 -17.73 -18.96 -19.01 -21.17 -21.50 -24.00 -27.34 -27.60 -27.67 -23.07 -23.88 5/26/2025 7/29/2025,817/2025,8/8/2025 -20.48 -24.75 -23.00 -21.85 -21.98 -27.23 -22.55 -23.90 -23.87 -30.22 -31.01 -27.64 -27.10 -21.86 -21.93 -22.10 -22.03 -25.32 -25.62 -30.01 -31.09 -31.41 -30.68 -25.07 -22.75 11/3/2025,11/5/2025,11/12/2025,11/17/2025, -21.93 -26.27 -22.95 -21.72 -22.69 -27.16 -23.55 -24.88 -24.75 -29.02 -28.94 -27.44 -26.80 -21.96 -22.06 -21.80 -21.84 25.52 -24.72 -26.99 30.42 -30.65 -31.52 25.88 21.73 11/21/2025 12/1/2025 12/5/2025 1/27/2026;2/2/2026;2/5/2026;2/6/2026 -15.58 -22.02 -17.95 -16.80 -17.44 -24.01 -19.25 -20.63 -20.37 -27.38 -27.14 -24.49 -23.94 -18.76 -18.83 -19.46 19.50 1 -23.37 -23.50 -24.45 -29.22 -29.35 -29.97 -24.38 20.17 4/10