Residents clash with developers at Marietta hearing over data centers; calls for transparency persist

A large and often emotional public comment period at Marietta City Council laid out sharply divergent views on data‑center and edge‑inference development in the city: residents, student activists and neighborhood organizers pressed for stricter guardrails, while business owners, technical consultants and the Cobb Chamber cited jobs and infrastructure benefits.

Opponents repeatedly questioned the adequacy of the developer’s studies: Representative Mary Frances Williams said the published noise modeling did not account for all emergency scenarios and cautioned about handling propylene glycol in cooling systems. Community organizer Louis Smith warned of documented neighborhood impacts in other jurisdictions and called for stronger local controls, asking council to "vote no." Grace Bloomberg and other speakers said the council had ignored hundreds of residents who oppose any data‑center construction in Marietta.

Supporters argued the projects will expand the tax base and enable medical and public‑safety low‑latency services. David Johnson of the Cobb Chamber said data infrastructure "supports your local tax base" and estimated local hiring for construction and IT operations. Several technical speakers described mitigation measures, including acoustical enclosures, enclosures for generators and continuous monitoring.

The public input shaped the council’s final stipulations — which include continuous acoustic monitoring, independent post‑operation studies, a generator‑hour cap and leak‑detection standards — but many residents said the measures do not fully allay their concerns about cumulative effects and transparency.

Provenance: topicintro SEG 446 (opening public comment) → topfinish SEG 3556 (closing public session before council debate).