That was among the latest ideas suggested in a proposed study that would search for a link between the landfill's contaminants and high rates of illness around it.
The study would search for wellness and landfill contamination 
mnli hypothesis: The study would search for wellness and landfill contamination  premise: That was among the latest ideas suggested in a proposed study that would search for a link between the landfill's contaminants and high rates of illness around it.