Committee clarifies how 500‑foot gas‑station buffer is measured, advances ZTA 25‑06 2–1

The Montgomery County Planning, Housing and Parks Committee voted 2–1 to forward Zoning Text Amendment 25‑06 to the full County Council with committee amendments that clarify how the county’s 500‑foot setback for larger filling stations is measured.

ZTA 25‑06 addresses a long‑standing point of uncertainty in the county zoning code: the exact point from which the 500‑foot separation for large stations (those dispensing at least 3,600,000 gallons per year) should be measured. Under the committee’s adopted language the 500‑foot setback for listed uses (dwelling units, schools, parks, playgrounds, daycare, and certain outdoor entertainment/recreation uses) is measured from the fuel dispenser — effectively the parked hose — while the committee also approved a planning board amendment requiring that environmentally sensitive features (streams, wetlands, floodplain) be protected by measuring the 500‑foot separation from the underground storage tank(s).

Planning staff told the committee the 3,600,000‑gallon threshold covers large retail or highway fueling operations (for example, wholesale retail fuel retailers and interstate travel stops); by contrast, an average neighborhood gas station sells roughly 4,000 gallons per day and typically does not meet the threshold. The ZTA does not change the 500‑foot distance; it clarifies how that distance is measured and adds a planning‑board recommended protection for environmental features.

The staff report and public hearing record showed divided testimony. Supporters said the clarification would provide predictability for applicants and allow certain large redevelopments to proceed without changing the current buffer distance. Opponents, and an Office of Legislative Oversight statement, emphasized public‑health concerns about vehicle queuing and air pollution near community locations and urged stronger protections. The planning board had recommended two amendments similar to the committee’s actions: (1) require the underground storage tanks be set back 500 feet from environmentally sensitive areas, and (2) make clear the nonconforming‑use rules are not altered so that a later permitted use near an existing station cannot render the station nonconforming without preserving the required separation.

Ben Barber, a planning staffer, summarized the logic behind the compromise: measuring from the dispenser addresses the above‑ground airborne source and queuing, while measuring the environmental buffer from the underground tank targets subsurface contamination risks related to storage tanks.

The committee approved the planning board’s technical clarifications and accepted language that preserves the filling station’s nonconforming‑use status so the station does not lose rights merely because a permitted use is later built closer to it. The committee chair summarized that the amendment is “countywide, but designed to address specific site clarity,” and the measure was advanced to full council with a committee recommendation of 2–1.

Committee members noted planning staff will coordinate technical drafting with the Department of Permitting Services and finalize ordinance language for introduction to the full council. Sponsors and staff emphasized that the amendment is intentionally narrow — it clarifies measurement points and protects environmentally sensitive areas without changing the 500‑foot distance itself.

What the committee decided: ZTA 25‑06 moves to full council with a 2–1 committee recommendation. The adopted amendments specify the 500‑foot measurement from the fuel dispenser for listed uses and require a 500‑foot measurement from underground storage tanks for environmentally sensitive features; the ZTA also preserves nonconforming‑use protection language for existing stations.

The committee recorded that this change affects a small subset of stations countywide because the 3.6 million gallons/year threshold applies to large retail or travel‑stop operations, not the average neighborhood station.