Below is a page from Newby Island Expansion EIR, where you can see that the health hazard index with expansion (“Project Conditions”) is worse than “Existing” and “Immediate Closure”. While the EIR author concluded that the increase is insignificant (just like odor is insignificant), the index only covers cancer, chronic and acute illnesses.
But EIR didn’t cover minor health-related impacts most residents are complaining about – stress, depression, sleep disturbance, appetite loss, headaches, asthma, nausea, etc.
Recently – EPA, CDC, County Public Health are coming out with statements that quality of life impacts from odor is a Public Health issue.