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High Acres Landfill & Recycling Center Construction & Operational Update
2nd Quarter 2025
Site Information
The High Acres Landfill began in 1971 and joined WM in 1972. The facility provides solid waste management and is located on approximately 1,500 acres. The permitted landfill is around 320 acres.
This update summarizes enhancements that occurred on-site through the 2nd quarter of 2025. Going forward, we'll provide community updates on a quarterly basis. Key aspects of the updates will include community benefits, site construction activities, environmental performance and compliance, and site monitoring activities.
Landfill Facts
Total Property: 1,500+ acres
Design Capacity: 3,500 tons per day
Closed Landfill: 72 acres
Western Expansion: 68.1 acres
Parkway Expansion Phase I: 20.1 acres
Parkway Expansion Phase II: 58 acres
Parkway Expansion Phase III: ~150 acres
Site Life: 2051
Community Benefits
Site Construction Activities
Emissions Monitoring
High Acres Landfill is planning on installing LoCI solar-powered automatic valves on approximately 60-70 existing landfill gas (LFG) extraction wells at the site on a trial basis. We will be installing these LoCI units over the next few months.
This automated gas well head is the latest version from LoCI (Version 7.1). These installed valves are programmed to automatically adjust each well head based on sampling data collected by the LoCI device.
The units continuously monitor conditions within the extraction system, including pressure, temperature, and composition of the gas collected, then sends that data to a server where an algorithm automatically makes adjustments to the well head valve. This will limit air intrusion and maximize gas capture at that gas well location.
Any data collected from this technology is intended only for operational purposes for the valve adjustments. The site will continue monthly field readings at the wellheads, for temperature and pressure, using a calibrated handheld gas meter and temperature probe.
East Perimeter Berm Project
Landfill gas header and condensate drain installation along the east perimeter road.
Summary
WM employs state-of-the-art odor control measures for the industry at the landfill, including more recent measures implemented and described in this update. We remain vigilant in our evaluation and implementation of best management practices and technology to enhance operations. WM continues its commitment to the Department and the community by continuing to conduct continuous ambient monitoring for hydrogen sulfide (H2S) at the South and North Monitoring Station and the Dudley/Northside School. The gas collection/control systems also continue to operate at high levels of efficiency this quarter. The data supports that landfill gas is being collected and not migrating off-site and that there is no indication that emissions pose any health concerns. The site’s gas collection and control system, operating records, odor control programs, off-site H2S monitoring data, enhanced quarterly surface scans, DEC notification hotline and follow-up data from a trained odor detection investigator, and DEC inspection reports, all indicate the landfill is operating in a manner that minimizes off-site odors to the greatest extent practicable.