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Residents and scientist warn of health risks from proposed bus depot; experts call out startup emissions
Summary
Multiple residents and a scientist told the ZBA they fear diesel particulate matter and startup emissions from early-morning bus operations would harm nearby residents; the city’s zoning board heard testimony but denied the use variance for the site on other zoning grounds.
At the Keene Zoning Board of Adjustment hearing on the proposal for a Student Transportation of America depot at 59 Optical Ave, public commenters repeatedly flagged air quality and health effects as central concerns.
Nora Travis, who identified herself as a scientist, said modern-diesel claims are not specific enough without engine model-year and emissions-control details. “Diesel exhaust actually is classified as carcinogenic to humans,” she told the board, citing the International Agency for Research on Cancer. Travis emphasized that cold-engine start-up events — not just idling — create concentrated emissions pulses that nearby residents will repeatedly breathe during morning start periods.
Residents added anecdotal concerns about vulnerable populations: Ken Lane said elderly neighbors with compromised health could be affected by even modest increases in exhaust or noise. Others noted that enforcement of state anti-idling guidance is typically recommendation-based and depends on fleet managers; Travis and others recommended binding, enforceable conditions if the board were to allow the use.
The applicant and STA said Keene buses are limited by contract to vehicles seven years old or newer, that buses do not fuel or wash on-site, and that STA uses telematics to limit idling. The board heard technical and policy trade-offs but ultimately denied the variance on zoning grounds rather than resolving open questions about emissions monitoring or enforcement.
