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Dublin staff outline newly adopted noise-code amendments, including an 80 dB enforcement tool
Summary
City staff explained code amendments adopted Feb. 9 that add a quantitative enforcement option (an 80-decibel threshold) while retaining a qualitative 'reasonableness' standard; police have decibel meters and enforcement will use metric or qualitative evidence depending on context.
Staff presented the noise-code amendments that City Council adopted on Feb. 9 to address loud motor-vehicle noise, pervasive industrial/nuisance noise and disorderly conduct. Presenting staff member Thad Boggs said the code changes add a quantitative tool—a referenced 80-decibel threshold for certain enforcement circumstances—while preserving a qualitative reasonableness standard for pervasive or low-frequency nuisances.
Boggs described the evidence base: a 2011 study and a 2024 follow-up showed most traffic decibel readings clustered around 50–60 dB with occasional outliers from lawn care or sirens. He said the revised code gives enforcement options: officers may use a decibel reading in some cases or pursue qualitative evidence of unreasonable, pervasive noise in others. "The 80 decibel level ... is more like lawn equipment," Boggs said, and the police department now has decibel meters and guidance to develop appropriate enforcement evidence. Boggs cautioned that the code had just become effective and staff had not yet completed enforcement case examples under the new standard.
