Minutes 04-15-2014 - Laserfiche WebLink

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Attorney; and authorizing the Manager to execute individual change orders within the limits of the Manager's authority ($250,000) up to the extent of the project budget. Gayle Wilson said two years ago the Board of County Commissioners directed staff to close the MSW landfill as of June 30, 2013. He said state regulations require a highly engineered cap must be constructed on top of the landfill. He said the components of this cover include: 1 foot minimum of soil; 40 mill synthetic liner; geocomposite drainage layer; 18 inches of soil; and 6 inches of top soil with vegetative cover. He said the reason for this cap is to prevent infiltration of water into the waste and to maintain positive drainage of storm water. He said the landfill will require a minimum of 30 years of monitoring and maintenance. He said the lowest responsive bidder was T&K Construction, LLC of Vinemont, AL in the amount of$3,432,142 for the construction associated with the closure of the Orange County MSW Landfill. Commissioner Dorosin asked for more information on the contract and its duration. Gayle Wilson said this is only for the construction of the cap, which takes about 6 months. He said the long term maintenance will be the responsibility of the County staff. Chair Jacobs noted that money is appropriated from landfill reserves. He asked for the current total amount of landfill reserves. Clarence Grier said the total land fill reserves are $18.1 million Chair Jacobs said the Board has heard of recreational facilities on top of landfills. He asked if this is feasible here. Gayle Wilson said this has been discussed, and in theory it is possible, but the cap system's integrity must be maintained for at least 30 years. He said passive recreation activities can be considered in future years but not in the short term, due to methane gas production. He said this could constrain any recreational activity for up to 20 years. Chair Jacobs said he would like more information on landfills being used for possible recreational opportunities. Commissioner Price said landfills can sink, and it is risky to consider any short term plans. Commissioner Rich said she thought the Board had discussed this before. Commissioner Rich referred to attachment 1 and asked why is there is a $3 million difference in the bids. Gayle Wilson said typically some firms do more research, while others may not have looked at project in its entirety. Commissioner Pelissier asked if there is any risk that the contractor may do something that is faulty. She asked if there is insurance for that. Gayle Wilson said that is a possibility, but the regulations account for that with a multi- layered quality assurance/quality control program. He said this program closely monitors and tests the different steps in the process. He said there will be oversight from staff engineers, the engineering company and an additional quality control firm, as well as other testing requirements. John Roberts said Gayle Wilson answered it very succinctly. He said he does not have concerns about risks. PUBLIC COMMENT: Mark Marcoplos said he has heard of a photovoltaic cover that produces electricity for alternative energy uses. He asked if this can be added to the proposal. Gayle Wilson said there are some facilities that are demonstrating that, and the technology is advancing. He said the problem with landfills is that they subside over time and