There are many potential environmental considerations, including threatened and endangered species, wetlands, and open-space requirements. also, a geological assessment might be necessary to determine whether the land the project is being developed upon has sensitive features, like sinkholes, caves, and wetlands, that could impact the development (and be impacted by it). Wetlands are very sensitive areas, and sinkholes and caves are vital to local areas because they recharge aquifers. Caves also tend to be homes to rare or endangered species.