The objectives of this research focus on investigating spatial distribution of hydrogen sulfide gas associated with manure removal and agitation events in deep-pit swine production facilities as well as assessing exposure or potential exposure to hydrogen sulfide before, during, and after manure removal and agitation events.

The specific objectives of this study were: (1) Implement a wireless hydrogen sulfide monitoring network in deep-pit sow and finishing swine facilities. (2) Measure the in-house distribution of hydrogen sulfide concentrations in deep-pit sow and finishing swine facilities before, during, and after pit agitation and pumping events. (3) Compare measured hydrogen sulfide concentrations to OSHA exposure guidelines (during normal operation) and animal exposure levels (during normal and pit agitation and slurry removal) for different swine facility types. (4) Develop management options that reduce worker and animal exposure risks to hydrogen sulfide in swine production facilities.