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SWDD Item Indian River County, Florida Solid Waste Disposal District Board Memorandum Date: November 11, 2022 To: Jason E. Brown, County Administrator From: Sean C. Lieske, Director of Utility Services Prepared By: Himanshu H. Mehta, PE, Managing Director, Solid Waste Disposal District Subject: Work Order No. 18 to Geosyntec for Segment 3, Cell 3 Site Preparations Descriptions and Conditions: The Indian River County (IRC) Solid Waste Disposal District (SWDD) Class 1 landfill includes the closed Segment 1- Infill/Segment 2 vertical expansion, and Segment 3 lateral expansion (Segment 3). The total footprint area of Segment 3 is 76 acres and consists of eight cells that are being constructed in phases, as needed. Segment 3 - Cell 1, directly east of and on top of the east slope of Segment 2, was constructed in 2013. Segment 3 - Cell 2 was constructed in 2020. Over the past two years, we have seen an average 21% increase in construction and demolition (C&D) debris going into the landfill compared to an average 1% increase in municipal solid waste (MSW). Based on the University of Florida Bureau of Economic and Business Research (BEER) reports, our average population growth for the past two years has only been 2%. The significant increase in overall tonnages into the landfill has resulted in our operator, Republic Services of Florida, LP (Republic), to estimate that the filling of Cell 2 will be nearly completed by the end of Calendar Year (CY) 2023 and has therefore recommended that SWDD consider construction of Cell 3 during CY 2023. SWDD staff is preparing a request for qualification (RFQ) for an engineering and construction services package for future cell design, permitting, and construction services, which is projected to be complete before the end of CY 2022. In the meantime, staff is recommending that we proceed with the Segment 3 - Cell 3 site preparations, which include the earthwork for the subgrade of Cell 3, appropriate routing of the perimeter stormwater ditch, and any impacts to groundwater monitoring wells and landfill gas probes, as necessary. Accordingly, staff requested the attached proposal from Geosyntec to provide engineering design, contractor procurement, and construction support services related to the site preparation activities. Analysis: Geosyntec has prepared Work Order No. 18, provided in Attachment 1, for engineering services detailing the scope of work, budget, and schedule for each of the phases. The fees to be paid by SWDD for the execution of this work authorization are in accordance with the Continuing Contract Agreement for Professional Services (CCNA), dated April 17, 2018, renewed and amended as of May 18, 2021 engineer's 126 SWDD Agenda - Geosyntec WO No. 18- Segment 3 Cell 3 Site Preparation Page 1 of 2