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Environmental findings shift Grand Opera House renovation east/west; council told a larger, donor‑backed project is now likely
Summary
Ramboll environmental work found historical contamination under the Grand Opera House site; staff recommended a lateral expansion rather than deep basement work to avoid costly remediation, increasing estimated project scope and pushing staff to seek donor commitments and phased design work for 2026–27.
City staff told the council that environmental review has changed the scope and cost estimate for a planned Grand Opera House renovation and expansion.
City Manager Roloff and facilities staff said Ramboll’s environmental review and DNR records indicate long‑standing contamination near the Grama’s footprint from a former dry‑cleaning operation. Because of that history, staff recommended minimizing deep excavation…
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