A proposed 834-unit senior living development at the former Doral Arrowwood hotel site now faces a full environmental review, after Rye Brook's Board of Trustees adopted a Positive Declaration under state environmental law Tuesday, according to the signed declaration.

What that actually means.

The declaration classifies Erickson Senior Living's project at 975 Anderson Hill Road as a Type I action with possible significant environmental impacts — a finding that requires a full Draft Environmental Impact Statement before the village can approve any zoning changes.

What's actually being proposed.

Erickson wants to build 750 independent-living units and 84 assisted-living and memory-care units across the roughly 83-acre former golf resort site, in buildings ranging from two to five stories with dining, recreation, healthcare and structured parking. Five percent of units would be reserved for income-qualified residents. The northern and eastern portions of the property — former fairways and greens — would stay preserved as open space, while the project still needs a zoning text amendment plus concept, site-plan and subdivision approval.

Why the environmental review will be extensive.

The Positive Declaration flags 14 potential impact areas — soil excavation, construction on steep slopes, wetland proximity, stormwater runoff, water and sewer demand, added traffic, and emergency medical service demand among them.

Who's behind the project.

Erickson Senior Living, based in Maryland, ranks fourth nationally among the largest U.S. senior living providers, running 25,300 residences. The company already held consumer planning sessions in Westchester earlier this year and lists the county on its own expansion website.

What's next.

A public scoping meeting for the environmental review is set for 7:30 p.m. Sept. 8 at Village Hall, with written comments accepted through Sept. 18. Questions can go to Village Administrator Christopher J. Bradbury at (914) 939-0111.

Also on the agenda: the old Hilton site.

The Board separately weighed a leaf-blower ban exemption for 699 Westchester Avenue, the former Westchester Hilton — the property's third such request, suggesting ongoing upkeep at a site that's sat vacant since 2020. No redevelopment plan for the 445-room property has been announced.