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INDIAN RIVER COUNTY SOLID WASTE DISPOSAL DISTRICT BOARD MEMORANDUM 15, B.D Date: April 2, 2018 To: Jason E. Brown, County Administrator From: Vincent Burke, Director of Utility Services Prepared By: Himanshu H. Mehta, P.E., Managing Director, Solid Waste Disposal District Subject: Indian River County Landfill Amendment No. 2 to Work Order No. 1 to CDM Smith, Inc. DESCRIPTIONS AND CONDITIONS: On July 18, 2017, the Solid Waste Disposal District (SWDD) Board approved the Indian River County (IRC) Landfill contract agreement with CDM Smith, Inc. (CDM Smith), in accordance with FS 287.055, Consultant's Competitive Negotiation Act per the Request for Qualification #2017048 for Engineering Consulting Services for Landfill Closure, Landfill Gas System Expansion, and Cell Construction. Staff requested a proposal from CDM Smith to provide professional engineering services for the proposed Class I Landfill, Segment 3, Cell 2 expansion; the partial closure of Segment 2; and expansion of the landfill gas collection system (Project). The proposed new cell is Cell 2 of Segment 3 (approximately 10.6 acres in size), which will be located immediately to the east of the existing Segment 3, Cell 1. The proposed partial closure of Segment 2 (approximately 25 acres in size) includes closure of the Segment 1, infill vertical expansion area and the final elevations of Segment 2. Expansion of the landfill gas system within Segment 2 is proposed to be constructed concurrently with the partial closure of Segment 2 so that the final components can be installed prior to the closure cap being constructed. Staff has also requested an evaluation of an alternative cover design as well as preliminary planning for a new lift station. This project will be completed in multiple engineering phases. Phase I includes evaluation of available information and developing sufficient information to update/revise existing permit design drawings and complete the final design and specifications that will be used for procurement. On July 18, 2017, the SWDD Board approved the IRC Landfill Work Order No. 1 to CDM Smith in the amount of $131,820 for this initial phase. Phase II Engineering Services include the preparation of the final design and bid package, permitting/regulatory agency support, opinion of probable construction cost, and bidding assistance. On October 3, 2017, the SWDD Board approved IRC Landfill Amendment No. 1 to Work Order No. 1 to CDM Smith in the amount of $558,679, increasing the overall total cost for Work Order No.1 to $690,499. On March 1, 2018, the IRC Purchasing Division received three bids for the Segment 3 Cell 2 Expansion, Segment 2 Partial Closure and the Landfill Gas System Expansion for Bid No. 2018025. Per review by staff and CDM Smith, a separate agenda item is being presented to the SWDD Board for the award of the bid to Thalle Construction Company, Inc. in the amount of the base bid of $14,576,600, with a 10% contingency of $1,457,660, for a grand total of $16,034,260. Staff has received a proposal from CDM Smith for Phase III of the work, which includes Engineering Services during Construction. @BCL@140E594C.doc Page 1 85