While it would be hard to find a 3 mile radius with no impact at all I believe it would be quite easy to find one that wouldn't impact the amount of people that this site would when you take into account all of the residence and tourists that this one would impact. Also, again it is much easier to accept when there is no impact either real or perceived for yourself. I spent many years as a custom applicator and worried much more about people's perceived opinions than the actual risks of damage. I could control my actual risks by how and when I applied but avoided some areas completely to keep the peace with the surrounding residence.
indeed public perception is one of the biggest challenges agriculture faces any more and you seem to have the back ground to appreciate that as a commercial applicator.
I do not know the containment and management systems this particular hog opperation will build and use, but there aremodern technologies that virtually eliminate teh historic odor that these CAFOs produce.
None permeablecovers for manure pits is a technology that greatly reduces odor.
That public perception you aptly mention has driven a great deal of research and development.
this is something that intrigues me......have read a bit about cattle feedlots using something similar.
http://www.nationalhogfarmer.com/mag/farming_hog_farm_converts
"[h=3]The Real Bonus — Less Odor[/h]
Perhaps the best byproduct of all is odor reduction. Since the Biogem system burns off the methane to produce electricity, and has a proprietary system to eliminate sulfides, the system eliminates the odors usually associated with hog manure.
“You are burning the smell,” Hofer says. “If you smell anything, you have a leak in the system and you are losing energy.”
“Odor control is a big selling point,” Miekle says. “All producers want to be good community citizens. If they can find a solution to the odor problem that takes care of some of the environmental and community complaints and pays for itself in the long run, we feel it is a win-win situation. Many producers agree.”
Biogem Power Systems has the North American distribution rights to the Romain Welter & Sons system from Luxembourg. Currently, there are 130 biogas electrical generation systems operating in Europe. The colony is currently adding a second system at their 1,200-sow barn 15 miles away from the main site."