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t TASK 300 - CONCEPTUAL STORMWATER LAYOUT CDM will finalize the conceptual stormwater management system design for the entire landfill . Finalizing the conceptual stormwater management design is essential to proceed with the permitting design of the Phase 1 portion of the stormwater management system on the Northern Expansion area. The conceptual stormwater system design will address the entire property . This work is summarized in Task 310 . Subtask 310 - Conceptual Landfill Stormwater Evaluation The ENGINEER will evaluate the preliminary conceptual master build-out landfill plan using the stormwater model previously developed by CDM. The master plan will be refined to provide additional landfill area if available . The size of the stormwater ponds will be correspondingly reduced . The stormwater model will confirm that the revised master build-out plan meets all stormwater regulatory requirements and will not experience flooding. Subtask 311 - Conceptual Landfill Stormzvater Management System Mapping The ENGINEER will revise the preliminary master build-out plan according to the refinements supported in Subtask 320 . The plan will be created in AutoCAD 2002 and transmitted to IRC as an AutoCAD 2000 file . The ENGINEER will provide 3 (full sized and half sized) hard copies of the plan to the SWDD as well as the digital file . Subtask 320 - C-5 Bypass Canal Additional Property Aquistion CDM and SWDD have identified an acceptable route for the C-5 Bypass Canal in order to abandon the portion of the C-5 which runs through the IRC Landfill property . This route is along the west side of the IRC wetland mitigation property just west of I-95 . Unfortunately this wetland mitigation parcel does not physically connect to the existing C-5 Canal right of way . The purpose of this land acquisition is to obtain a piece of property large enough for the C-5 bypass canal to be routed south to the wetland mitigation property . The following tasks are anticipated in order to acquire this additional property . Subtask 321 - Property Survey (optional future services, not part of this proposal) CDM will assist SWDD in verifying the amount of additional property which is required . Based on existing survey information, it appears that 1 -2 acres of additional property is required . However, an additional boundary survey will be required to verify this . CDM will be assisted by a surveying subconsultant who will perform this task. The surveyor will assist with the following tasks : ■ Verify the boundary of the existing IRC Wetlands Mitigation property and its relationship to the C-5 ROW. CDM will establish the amount of property required for the C-5 bypass canal and access to maintain it. B-6 rb4508.doc