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Project Number 2098RV26 January 22,2025 <br /> TABLE 2 <br /> SUMMARY OF HISTORIC GROUNDWATER ELEVATION DATA <br /> PARK WOODS CLEANERS <br /> 1744 WEST HAMMER LANE <br /> STOCKTON, CALIFORNIA <br /> TOC Elev. Total Depth Depth to GW GW Elevation GW Elevation <br /> SAMPLE ID DATE Change <br /> (feet rel MSL) (feet BTOC) (feet BTOC) (feet MSL) (feet MSL) <br /> 12/21/2020 77.43 22.03 -10.51 - <br /> 2/19/2021 77.43 21.98 -10.46 0.05 <br /> 5/6/2021 77.40 22.29 -10.77 -0.31 <br /> 9/17/2021 77.43 23.67 -12.15 -1.38 <br /> MW-6B 12/20/2021 11.52 77.43 23.24 -11.72 0.43 <br /> 4/1/2022 77.43 22.67 -11.15 0.57 <br /> 12/7/2022 77.43 23.90 -12.38 -1.23 <br /> 7/10/2023 77.43 22.98 -11.46 0.92 <br /> 9/28/2024 77.40 17.96 -6.44 5.02 <br /> 12/21/2020 95.57 21.96 -10.49 - <br /> 2/19/2021 95.57 21.90 -10.43 0.06 <br /> 5/6/2021 95.51 22.23 -10.76 -0.33 <br /> 9/17/2021 95.57 23.61 -12.14 -1.38 <br /> MW-6C 12/20/2021 11.47 95.57 23.15 -11.68 0.46 <br /> 4/1/2022 95.57 22.63 -11.16 0.52 <br /> 12/7/2022 95.57 23.85 -12.38 -1.22 <br /> 7/10/2023 95.57 22.92 -11.45 0.93 <br /> 9/28/2024 95.55 17.83 -6.36 5.09 <br /> Note: Average Elevation Change (Shallow Zone) in feet <br /> Elev. = Elevation <br /> GW = Groundwater 1Q18-2Q18 0.58 <br /> MSL= Mean Sea Level 2Q 18-3Q 19 1.62 <br /> BTOC = Below Top of Casing 3Q19-1Q20 0.00 <br /> 1Q20-2Q20 -0.56 <br /> 2Q20-3Q20 -1.07 <br /> 3Q20-4Q20 -0.31 <br /> 4Q20-1Q21 0.03 <br /> 1Q21-2Q21 -0.28 <br /> 2Q21-3Q21 -1.42 <br /> 3Q21-4Q21 0.45 <br /> 4Q21-1Q22 0.51 <br /> 1Q22-4Q22 -1.18 <br /> 4Q22-3Q23 0.94 <br /> 3Q23-3Q23 5.10 <br /> Table 2-4 <br /> E2 C Remediation <br />