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Anchorage solid waste staff brief committee on Merrill Field leachate tests and landfill gas upgrades at regional landfill
Summary
Solid Waste Services updated the Assembly committee on a test well and leachate controls at the closed Merrill Field landfill and described ongoing upgrades and planning to expand landfill gas destruction capacity and leachate treatment at the Anchorage Regional Landfill under a 2019 compliance order by consent.
Solid Waste Services staff told the Assembly Infrastructure Enterprise and Utility Oversight Committee of the Whole on June 12 that they have installed a test production well at the closed Merrill Field landfill to measure leachate and groundwater and are moving quickly to design and begin construction of gas-control and pipeline improvements.
Kelly Toth, director of Solid Waste Services, and James Armstrong, chief engineer for engineering and planning, said the Merrill Field site — closed in 1984 and unlined — has rising groundwater and surface water creating leachate that has in some periods spilled onto adjacent Fifteenth Avenue. "We did the emergency procurement," Toth said, and staff are installing gas probes, a leachate production well and replacement pipeline phases; parts are en route and construction is expected to start mid to late June.
The test well is a data collection step, staff said: it pumps groundwater and leachate to a nearby…
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