Cornwall — Chestnut Woods has gotten smaller, even before it's been built.

Cornwall — Chestnut Woods has gotten smaller, even before it's been built.

But will downsizing and some other adjustments be enough to get that all-important final OK from the town Planning Board? Or satisfy environmental watchdogs?

Chestnut Woods is one of several development projects proposed to be built in the Moodna Creek watershed, and there's been concern that all that building might put excessive runoff into the creek — which feeds into the Hudson River — and spoil the view for hikers and others who like to enjoy the area's scenic beauty.

In the case of Chestnut Woods, developers eliminated one of seven proposed buildings; that cut the number of senior apartments to 162 from 215. A clubhouse, office building and a bed and breakfast establishment also are planned for the 24-acre site on Route 32, west of the creek.

But the six remaining buildings still include one that would sit on a ridge overlooking the creek and some hiking trails near Knox Headquarters State Historic Site.

"You got rid of the wrong building," Planning Board member Deke Hazirjian told developers' representatives earlier this month.

Environmental groups and other agencies also are pushing to keep visual impacts to a minimum.

"It's a pretty pristine area," said Jim Hall, executive director of the Palisades Interstate Parks Commission.

The largest of the pending projects is Cornwall Commons: 490 senior residences, plus commercial development and a congregate care facility on almost 200 acres south and east of the creek and west of Route 9W. They're still working on a supplemental environmental impact statement.

Also pending are Willow Woods, 28 single-family homes off Route 9W; a 130,000- square-foot packaging and warehouse facility on Mill Street; and Winding Creek, 52 town houses at Mailler and Ferguson avenues, a bit further from the creek.

And all that building means more paved surfaces that don't absorb stormwater runoff.

"There could be a very large impact to the creek and the wetlands," said Rebecca Troutman, an attorney with the environmental group Riverkeeper.

That group and others are continuing to lobby for a cumulative review of all these projects' impacts.