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Mr. Himanshu Mehta, P.E. <br />29 October 2024 <br />Page 2 <br />PROJECT BACKGROUND <br />The IRCL facility is located in southern Indian River County, east of Interstate 95, south of Oslo <br />Road, and west of Rangeline Road in Vero Beach, Florida. The SWDD administers the <br />management and operation of the Class I landfill at the IRCL facility. The Class I Landfill <br />includes the closed Segment l/Infill/Segment 2 vertical expansion, and active Segment 3 lateral <br />expansion (Segment 3). The total footprint area of Segment 3 is 76 acres and consists of eight <br />cells that are being constructed in phases as needed. Segment 3, Cell 1, directly east of and on <br />top of the east slope of Segment 2, was constructed in 2013. Segment 3, Cell 2 was constructed <br />in 2020. Republic Services of Florida LP (Republic), the operator of the Class I Landfill, has <br />estimated that filling of Cell 2 will be nearly complete by the end of Calendar Year (CY) 2024 <br />and has therefore recommended that SWDD considers construction of Cell 3 during CY 2023- <br />2024. Phase 1 construction of Cell 3 of the Segment 3 Expansion started in July 2023 and was <br />completed in February 2024. This phase involved placement and compaction of fill material to <br />bring the grades to the bottom of the liner system. Phase 2 construction of Cell 3 of the Segment <br />3 Expansion includes the installation of the liner and leachate control systems and is currently <br />under construction. <br />On 20 February 2024 SWDD authorized Amendment 1 to Work Order 1 to Geosyntec to provide <br />engineering and construction support services related to Phase 2 Liner Construction activities for <br />Cell 3. The scope of services includes construction management (CM, quality assurance/quality <br />control (QA/QC) services, resident engineering and preparation of construction completion <br />certification report for submittal to FDEP. Geosyntec had previously completed the construction <br />documents and assisted SWDD through the procurement process to select Comanco <br />Environmental Corporation (COMANCO) as the contractor for the liner construction activities. <br />COMANCO was issued the notice to proceed (NTP) on 1 April 2024 and with an initial <br />estimated substantial completion by 31 July 2024. Due to construction delays an updated <br />substantial completion date of 11 October 2024 was identified and the additional work was <br />addressed in Amendment 2. However, due to the impact of Hurricanes Helene and Milton <br />additional delays have resulted do to down time during the storm. COMANCO has now <br />estimated substantial completion by 09 November 2024 with additional works (sodding, access <br />ramp construction, Change Orders 6, 7, & 8, etc.) to persist till approximately 30 November <br />2024. <br />This proposal addresses the additional engineering design and construction support services <br />required to complete Phase 2 of the Project, including additional engineering design services <br />requested by SWDD, additional construction support services including additional CM, onsite <br />QA/QC support, and survey certification support required to substantially complete construction <br />by the contractor. <br />FL9363B-0i/Segment 3 Cell Liner Construction Amendment 3 <br />engineers I scientists I innovators <br />