Guam – Where does the post-closure plan for the Ordot Dump stand? And what actions has the U.S. Environmental Protection Agency taken since the last report was filed in June 2018?
In a status report, the solid waste receiver estimated that it would cost more than $1 million to implement a mitigation project to control methane emissions on the perimeter of the Ordot Dump due to the poor management practices that existed before receivership.
The latest update revisits the June 2018 report acknowledging the delay in USEPA’s review of certain documents needed for final approval. These documents were not submitted.
Robert Mullaney, representative from the U.S. Department of Justice’s Environmental Enforcement Section, said the court needs to direct the receiver to complete the work on certain projects.The report touches on the status of projects being addressed by the new contractor.
First, the soil vapor extraction system, which involves maintaining and operating the gas monitoring system. Pilot test results, design, and a preliminary operation maintenance and monitoring plan for the system to control landfill gas at the boundary of the Ordot Dump.
In December 2018, a report was submitted regarding information gained from the performance testing. According to court documents, EPA expects to provide comments to the receiver by early March.
Also reviewed was the groundwater analysis, which involves groundwater and surface water monitoring at the dump. The U.S. EPA is requesting the receiver to update the sampling analysis plan and collect additional data necessary to support the groundwater monitoring program.
The third item refers to the leachate spills caused by the accumulation of storm water ponds at the Ordot dump during two storms in 2017. EPA was to provide comments to the receiver on Thursday. While the documents have not been disclosed, the status update indicates that EPA was expected to inform the receiver of the need to provide an expanded leachate monitoring program, which is not only a necessary component of the required groundwater monitoring program but will also facilitate an assessment of any future leachate spills.
The report highlights that additional information is required from the post-closure plan. The receiver will need to submit a revised post-closure cost estimate, including updated costs for the independent engineer, independent trustee, the operation of the SVE system, the revised groundwater monitoring program and any revisions to the leachate control system.