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Forward Landfill – 2023 Annual Corrective Action Evaluation Report <br />www.arcadis.com <br />Forward Landfill 2023 Annual CA Eval Rpt_08012023 i <br />Contents <br />Acronyms and Abbreviations ................................................................................................................................ iii <br />1 Introduction ...................................................................................................................................................... 1 <br />2 Total VOC Mass ............................................................................................................................................... 2 <br />3 TVOC Mass Trend ............................................................................................................................................ 3 <br />4 Individual Well TVOC Concentrations ........................................................................................................... 3 <br />5 Condition of Landfill Cover ............................................................................................................................ 3 <br />6 Landfill Gas Monitoring Results .................................................................................................................... 3 <br />7 Comparison of Current to Modeled Groundwater Quality .......................................................................... 4 <br />8 Summary .......................................................................................................................................................... 5 <br />9 Certification ...................................................................................................................................................... 7 <br />Tables <br />Table 1. Total VOC Threshold Limits <br />Table 2. Third Quarter 2022 Groundwater VOC Results <br />Table 3. Fourth Quarter 2022 Groundwater VOC Results <br />Table 4. First Quarter 2023 Groundwater VOC Results <br />Table 5. Second Quarter 2023 Groundwater VOC Results <br />Table 6. Third Quarter 2022 TVOC Mass Estimations Calculations <br />Table 7. Fourth Quarter 2022 TVOC Mass Estimations Calculations <br />Table 8. First Quarter 2023 TVOC Mass Estimations Calculations <br />Table 9. Second Quarter 2023 TVOC Mass Estimations Calculations <br />Table 10. Summary of Historic TVOC Masses <br />Table 11. TVOC Concentration Summary