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Mr. Himanshu H. Mehta, P.E. 11 July 2007 Page 7 Task 4 : ERP Modification Geosyntec understands that one of SWDD's other consultants is currently applying, on SWDD behalf, for Environmental Resources Permit (ERP) modification for the entire 276 acre site. This permit modification is based on the assumption that the 33 -acre Cell 2 area will be constructed and operated as an unlined C&D disposal facility, which requires an unlined final cover system. However, conversion of this area to a lined Class I landfill would require liner in the final cover system that would increase the surface water runoff from the site. Therefore, under this task, Geosyntec will analyze the effect of adding the proposed expansion area on the stormwater management system as currently designed and presented in the ERP . A modification to the ERP will be required for submittal to FDEP to account for any increase in the amount or timing of stormwater runoff due to grading changes or infiltration differences from the expansion final cover system or other changes to the site drainage systems. This task does not include any environmental considerations (i.e., wetlands, endangered species, etc.) associated with permitting of the Class I landfill expansion. It has been assumed that wetlands and other environmental issues have already been addressed as part of previous permitting of the overall 265-acre facility. Geosyntec proposes to initially meet with FDEP to discuss the proposed lateral expansion of the Class I — Segment 3 landfill and its impact on the existing stormwater management system. During this meeting Geosyntec will confirm from FDEP the permit modification requirements to the existing ERP . For the purpose of the budget estimate, Geosyntec has assumed that a minor modification to the existing ERP will be required. Geosyntec will provide written responses to RAIs from FDEP on the ERP modification, if deemed necessary. For the purpose of the budget estimate, Geosyntec has assumed that one response to RAI will be required. Task 5 : Response to Reeulatory Comments Under this task, Geosymec will provide FDEP with written responses to RAIs throughout the course of the permit review process. Geosyntec will also meet with FDEP (if needed) to clarify or discuss any design or permit issues. For the purpose of the budget estimate, Geosyntec has assumed one response to RAI and one meeting with FDEP will be required. Task 6: Feasibility Study of Landfill Consolidation As previously discussed, SWDD verbally authorized Geosyntec on 18 April 2007 to feasibility of co-disposing C&D debris in a lined Class I landfill. As part of this task, Geosyntec evaluated X1,060MAntendmeat to Class I landfill Design Work Order.dw engineers I scientists I innovators