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Table 10 <br />Summary of Historical TVOC Masses <br />2025 Annual Corrective Action Evaluation Report <br />Forward Landfill <br />9999 South Austin Road, San Joaquin County, California <br />Date TVOC Mass (µg/L)Mean Median <br />7/29/2021 167.9 <br />11/10/2021 148.5 <br />1/27/2022 203.5 <br />5/6/2022 144.0 <br />7/29/2022 166.8 <br />11/1/2022 139.1 <br />1/30/2023 222.7 <br />5/9/2023 127.7 <br />8/2/2023 214.9 <br />11/9/2023 292.9 <br />1/1/2024 319.8 <br />5/6/2024 344.2 <br />8/8/2024 322.5 <br />11/22/2024 465.1 <br />2/7/2025 469.5 <br />5/23/2025 804.1 <br />Notes: <br />1. Beginning in second quarter 2015, TVOC mass includes 21 wells as part of the plume configuration. <br />2. Beginning in third quarter 2015, TVOC mass includes 18 wells as part of the plume configuration. <br />3. In third quarter 2024, TVOC mass includes 36 wells as part of the plume configuration. <br />Acronyms and Abbreviations: <br />µg/L = micrograms per liter <br />NC = not calculated <br />TVOC = Total VOCs <br />4. In fourth quarter 2024, TVOC mass includes 45 wells as part of the plume configuration. <br />6. In second quarter 2025, TVOC mass includes 51 wells as part of the plume configuration. <br />5. In first quarter 2025, TVOC mass includes 43 wells as part of the plume configuration. <br />515 467 <br />293 306 <br />164 153 <br />166 158 <br />3/3