Several nested, man-made landscape features protect the wetlands, including rain gardens, a rock filtration trench and a stormwater detention zone with native mesic-prairie vegetation. These filter stormwater before it enters an undisturbed wetland buffer zone. Under-building parking minimizes on-grade paving. Before granting it's approval, the Regional Planning Commission's report opined that, because of the design of the filtration measures, water quality will actually improve after the development is completed.