This National Pork Board project resulted in new odor planning tools called “odor roses” and “odor footprints” that provide visual representation of the frequency, direction and extent of odor dispersion from a swine facility. The tools can be used to determine “risk-based” setback distances in any of four directions from a pork facility. Collectively these tools have been given the name the “odor footprint tool” or simply the “OFT”. The project also developed new odor, hydrogen sulfide and ammonia emissions data for anaerobic swine lagoons. These data indicated that purple lagoons have odor emission rates that are about half those of non-purple lagoons when compared in late spring. Purple lagoons also had significantly reduced hydrogen sulfide emissions. In addition, the project collected and compiled odor and hydrogen sulfide emission rates that have been reported for swine facilities by research studies around the world.