Success!
The geoFencing code I field tested today distinguished 85 locations in a 1sq mile region.

In awe of this power for my project.
@RobOswald Robert, thank you! It would be awesome! I will PM you later today.
You can add location information to your Tweets, such as your city or precise location, from the web and via third-party applications. You always have the option to delete your Tweet location history. Learn more
@RobOswald Robert, thank you! It would be awesome! I will PM you later today.