Neighbors in Lemay are sounding the alarm over a developer's proposal to fill an old quarry with construction waste, warning it could mean years of truck traffic, new flood risks and a constant hum of heavy equipment near homes. The plan has already sparked an emotional public hearing and spurred grassroots organizing, as residents worry about long-term hits to property values, safety and local air quality.
As reported by St. Louis Public Radio, Fillworks LLC is asking St. Louis County for a conditional-use permit to fill the inactive Ruprecht Quarry with construction material. County staff took public testimony at an initial hearing and are now accepting written feedback while the application remains under review.
Project scale could mean years of truck traffic
The scope of the proposal is anything but small. The St. Louis Business Journal reported that the roughly 30-acre pit would be backfilled with millions of cubic yards of material, a pace that could send about 100 dump-truck loads to the site each day and could take years or even decades to wrap up. Neighbors say that kind of timeline has them bracing for wear and tear on local streets, near-constant noise and the possibility of more water runoff into nearby yards.
Neighbors warn of flooding, noise and air-quality impacts
At the county hearing, residents lined up to voice fears about flooding, heavier traffic, nonstop construction noise and dust that could affect the air they breathe. One neighbor told St. Louis Public Radio that she and her family have cried over the idea of trucks and machinery operating so close to their homes. Organizer Briana Coleman has been distributing yard signs and running a community survey to gather neighborhood feedback and keep opposition visible. County planning staff say they will present their findings to the planning commission no earlier than Sept. 14, 2026, which keeps the proposal parked on the commission's upcoming review calendar for months to come.
Permitting rules and what to watch next
Under St. Louis County's land-disturbance rules, large fill operations typically must include stormwater control plans and may require specialized permits or a stormwater pollution prevention plan before any work begins. Those requirements give reviewers a chance to demand mitigation measures or attach conditions. The county's code also spells out standards for advance work, borrow pits and stockpiling that applicants must meet during the review. St. Louis County code
The debate is likely to stretch into the fall and possibly beyond. With staff findings still in the works, public feedback ongoing and a planning commission review on the horizon, both neighbors and developers will have more chances to make their cases to the county. For now, residents in south St. Louis County say they plan to keep the pressure on and the issue in the public eye as the formal review moves forward.
