Leesburg staff brief commissioners on recycling markets, Waste Management sorting at Elkridge and potential local glass refinery

Town staff updated the Environmental Advisory Commission on regional recycling markets and showed a Waste Management video of the company’s Elkridge, Maryland, single‑stream sorting facility.

The presentation described the Elkridge plant as a highly automated material recovery facility that uses trommels, ballistic separators and 22 optical sorters to separate fiber, plastics, glass and aluminum. Waste Management’s explanation in the video noted each optical sorter can perform up to 1,000 picks per minute and that aluminum is recovered using an eddy current before commodities are baled and shipped to manufacturers.

The staff member who presented said they attended a Metropolitan Washington Council of Governments markets-and-materials meeting and summarized remarks from attendees, including representatives from Maryland Environmental Services, Republic Services and the Maryland Recycling Network. Staff told commissioners the regional market for aluminum and some HDPE plastics had been “very healthy” recently, while fiber (paper and cardboard) volumes and prices have softened because of lower generation and mill downtime.

Presenters also discussed glass: Waste Management said its new operations can clean glass and send it to a company that reprocesses it (referred to in the presentation as cap glass). The staff update noted that roughly one third of local material recovery facilities (“Murphs” in the presenter’s usage) accept glass and that Montgomery County operates a color‑sorting line for higher‑value glass products.

Staff described a company, identified in meeting materials as Sonier (presented in the meeting by Doug Jackson), that is piloting a process to turn glass into an aggregate used in cement. The presenter said the company is considering a significant investment in Northern Virginia to produce a lower‑carbon cement aggregate, and that some of the details under discussion include how glass would be delivered to the plant and whether murphs or haulers would drop material there.

Why it matters: the update shows how downstream markets and new regional investments could change what the town accepts and how it markets collected materials. Staff recommended keeping the town’s list of acceptable curbside materials unchanged while the market evolves and a potential local glass‑refining option develops.

What commissioners asked and staff clarified: commissioners asked about contamination (wet cardboard, plastic bags and “tanglers”), the safety risks of unacceptable items (needles, batteries, propane tanks) and the carbon footprint of hauling material to centralized sorting. Staff said Sterling currently operates as a transfer point while Elkridge performs sorting, and that Waste Management has chosen Elkridge for that processing. Staff also said Waste Management reported a major capital investment in the automated facility.

Staff recommendation and next steps: staff recommended maintaining the current accepted‑materials list for now and continuing to monitor the Sonier/Sioneer pilot and regional market conditions. Commissioners asked staff to relay questions about glass handling and long‑term management to county and regional partners and to return with updates.

Ending: Commissioners did not take a formal vote on policy changes during the meeting; staff said it will continue attending markets-and-materials briefings and report any developments that would affect local curbside rules.