Council reinstates ambient‑plus noise standard, orders weekday 48‑hour baseline study

Aug 26, 2026

Council voted to reinstate an ambient-based noise standard (ambient + 1 dB) that requires developers to supply a 48‑hour baseline sound measurement (weekdays) and submit predictive noise modeling; it also authorized ongoing monitoring and third‑party audits.

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Noise emerged as a central technical issue during deliberations on the data‑center ordinance. Council members voted to reinstate the prior ambient-plus approach to noise regulation (the table circulated Aug. 11) and clarified that required baseline sound measurements must be 48 hours taken on weekdays (Monday–Friday) rather than weekend‑only sampling.

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