>So the opinion of one of our local beekeeping gurus is that you have to then remove the splits at least a mile away.
I've never done it. What you do have to do is allow for and minimize drift. Allowing is shaking extra bees into the split. Minimizing is putting a branch in front of the door to get them to reorient.
>So do I need to move the splits to another location or will the other side of this 20acres be okay?
That would be a bad idea. Right next door or 2 miles works. A long ways but less than 2 miles is bad.http://www.bushfarms.com/beesmoving.htmhttp://www.bushfarms.com/beessplits.htm