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Mr. Himanshu Mehta, P. E. 21 November 2025 Page 4 Geosyntec will provide the draft closure design drawings to IRC SWDD for review and schedule a meeting to discuss comments. Geosyntec will incorporate feedback from IRC SWDD to develop permit level design drawings for submittal to FDEP with the closure permit application. Phase 4: FDEP Engagement and Permit Modification A virtual pre -closure meeting will be scheduled with FDEP Central District to discuss the preliminary and temporary closure design and requirements and potential permit modifications. Two Geosyntec staff will attend the meeting. If necessary, we assume a permit modification application will include the following components; • Cover letter and Engineering Report; • FDEP permit modification application Form 62-701.900(1), F.A.0 (If required); • Design Calculations; o If ClosureTurf' is selected the following technical documentation will need to be prepared to complete a permit modification (For budgeting purposes these design calculations were included in this budget): • Cover veneer slope stability analysis to demonstrate that the product provides an adequate factor of safety against sliding (veneer) failure along the plane of the geosynthetics. ■ As part of this analysis, Geosyntec has assumed that one series of interface friction tests (i.e., three tests, each run at different applied stresses) will be performed using site-specific soils and a 12"x12" sample of the ClosureTurfrM product to develop an interface shear strength for use in design. ■ Landfill gas uplift evaluation to demonstrate that slope stability can be maintained in the presence of potential gas pressure buildup beneath the ClosureTurfrM. ■ As part of this evaluation, Geosyntec has assumed effort to collect three rounds of gas pressure measurements at each of the gas stub - out locations within the partial closure area along the west and southern sideslopes of Cells 1 and 2. • Wind uplift analysis. ■ Transmissivity evaluation to demonstrate equivalence with the currently permitted geocomposite drainage layer. NCP2525235MC Partial Closure & GCCS Evaluation engineers I scientists i innovators