Developers, who propose 4,000 units on about a quarter of a 4,000-acre property, say they’re working to preserve as much land as possible, and deny they’ll negatively impact older forests. Conservation advocates have raised a host of concerns, including flooding, traffic, groundwater use, and the county’s permitting process. The developers can build by right, and don’t need county approval, but advocates hope to stop anything from being built at all.