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GeoSyntec Consultants Ms . Polly Kratman Indian River County 7 June 2005 Page 3 The Segment 2 Class I landfill is lined and currently in operation. It is permitted with a final cover meeting the requirements of Rule 62 -701 . 600 ( 5 ) (g) , F . A . C . The proposed cover system consists of a 40-mil thick textured linear low-density polyethylene (LLDPE) geomembrane, a 24-in. thick protective soil layer, and sod . The landfill final cover is permitted for : (i) 4H : 1V slopes from EL . 25 to EL . 55 ft ; (ii) 3H : IV slopes with a 20- ft wide bench at every 20 ft of vertical rise from EL . 55 to EL . 135 ft ; and (iii) 18H : 1V slopes from EL . 135 to EL . 145 ft. GeoSyntec understands that the proposed cover system has been constructed over a portion of Segment 2 (from EL. 25 to EL. 55 ft with the 4H : 1V sideslopes) . In order to maximize the disposal capacity of the landfill, the IRC SWDD has proposed to eliminate the benches by using 311 : IV slopes from EL. 55 to EL . 145 ft with one stormwater bench at EL . 85 ft . An application for this vertical expansion of Segment 2 was also included as part of the renewal operations permit application submitted to FDEP in July 2004 . GeoSyntec also understands that FDEP has approved the proposed vertical expansion of Segment 2 . The IRC SWDD would like to raise the final elevation of the entire Class I landfill ( Segment 1 , Infill Area and Segment 2) to the proposed elevation in the updated Master Plan. A liner system will be required for the unlined top (EL. 129 . 5 ft) of Segment 1 used for the C&D expansion . This liner system must tie into the existing liner system for the Infill Area. PROPOSED SCOPE OF WORK The proposed scope of work includes activities to be performed on behalf of the IRC SWDD for the design and permitting services for the vertical expansion . The scope of work is based on the requirements of Chapter 62 -701 (effective 27 May 2001 ) , F .A. C . GeoSyntec will provide all engineering services necessary to complete the permit application and address any comments or requests for additional information from FDEP for issuance of the permit for the landfill vertical expansion. For the purpose of budgeting, the scope of work has been divided into three main tasks : • Task 1 — General Consulting/Meeting Support/Project Management ; • Task 2 — Design and Permit Application ; and • Task 3 — Environmental Resource Permit (ERP) Modification . XL05065UL050010-final