Overview
- Plymouth Fire Rescue responded around 4 a.m. to 31 Tenney Brook Road after residents reported feeling sick.
- Firefighters recorded carbon monoxide levels above 500 parts per million, the upper limit of their meters and a level considered immediately dangerous to life and health.
- Crews removed two occupants, called in off-duty responders, and evacuated the building’s remaining five units as a precaution.
- The propane supply was shut off and the building was ventilated until monitors read zero parts per million, allowing residents to return.
- The EPA warns that exposures above 9 ppm over eight hours and above 35 ppm over one hour are unsafe, underscoring the severity of the incident.