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Mr. Himanshu H. Mehta, P.E. <br /> 11 July 2007 <br /> Page 6 <br /> • design the top elevation and final cover configuration for the proposed expansion to meet <br /> the disposal capacity needs of IRC; <br /> • perform hydrologic and hydraulic analysis for extreme rainfall events and design the <br /> surface-water management system for the expansion area, including control features to <br /> separate surface water from leachate during construction and operation of the expansion <br /> area; <br /> • perform slope stability (liner system, interim and final configurations, and veneer <br /> stability of the final cover system) and settlement evaluations for the proposed expansion <br /> and the infill planned for future construction; <br /> • design the gas control and collection system (GCCS) for the proposed expansion; <br /> • prepare permit drawings (with adequate details for permitting) for the proposed <br /> expansion of the landfill (approximately 20 sheets of D-size, 24 inches by 36 inches); <br /> • prepare Technical Specifications and a Construction Quality Assurance (CQA) Plan for <br /> all components of construction for the landfill expansion; <br /> • revise the facility operating plans (Operations Plan, Leachate Management Plan, Gas <br /> Management Plan, Water-Quality Monitoring Plan, and Closure Plan) to incorporate <br /> changes, as needed, from the proposed expansion; <br /> • prepare financial assurance cost estimate for closure and long-term care of the proposed <br /> expansion; and <br /> • complete the required FDEP form (62-701 .900( 1 )) and prepare the supporting plans and <br /> engineering reports. <br /> Geosyntec will prepare the substantial modification permit application for the Class I — Segment <br /> 3 Landfill (Permit Application) for the 33-acre lateral expansion. The Permit Application will <br /> include the engineering reports, permit drawings and operating plans required in accordance with <br /> Chapter 62-701 , FAC. The Permit Application will be signed and sealed by a registered <br /> professional engineer in the State of Florida. <br /> Geosyntec will provide four complete copies of the amended Permit Application to FDEP and <br /> two copies to SWDD. An electronic file of the Permit Application will also be provided to <br /> FDEP and SWDD. <br /> Xr.06096Wmendmem to Class I landfill Design Work Order.doc <br /> engineers I Scientists I innovators <br />