In the late 1990s, Louisville spent nearly $200 million revitalizing a blighted area on the West End. Park DuValle emerged—and has since been nationally-recognized as a model mixed-income community. But one thing the city couldn't change was the neighborhood's location. And like the housing projects that stood before it, Park DuValle is next to Louisville’s industrial area. Residents say the odors in the air are often unbearable.