Dive summary:

• TRC, a Massachusetts-based environmental corporation, conducted a peer review of the cost of the closure of a South Carolina landfill and estimated the cost to be $21 million, the exact amount the landfill has saved to close the plant, but the Horry County Solid Waste Authority (HCSWA) claims the closing costs will reach towards $42 million dollars with an additional $13 million needed in post closure care costs.
• Despite HCSWA’s original price estimate, they don’t seem to be worried about the stark cost difference, Danny Knight, Director of the HCSWA said, "When we begin the closing process, we are confident that we have the adequate funding reserved in order to maintain our waste containment systems and be able to monitor groundwater to ensure that our waste is not polluting our surrounding communities."
• The landfill will begin closure in 2035, still allowing time to save money for the closure costs but an additional $33 million is a hefty goal, despite this, Knight boasts, "Twenty-one million dollars is a large sum of money, and I am pleased that the Authority has had the foresight over the years to start saving for the future of these closures.”

From the article:
The Horry County Solid Waste Authority (HCSWA) needs a total of $42 million dollars to close their landfill by 2035.
According the HCSWA, an environmental corporation called TRC based in Massachusetts performed a peer review of the HCSWA and found that the $21 million dollars the HCSWA has saved for closure and post-closure landfill procedures which will include excavating landfill top-soil, monitoring landfill gas emissions, ground and storm water pollution and general de-construction costs is enough to get the job done. …