Of course, I had to investigate the whole fiasco. So, I went online and looked up old maps of Manhattan Island. I found that in 1644, Dutch Colonists owned the site and it was used primarily to grow tobacco and raise pigs. There are copies of the old maps on the Internet if you care to find them. Just Google “Manhattan Early Maps.”
When I zoomed in on one of those maps, I found a scattering of green spots. It piqued my interest, so I started looking up green pigs and leprechauns.
Wow! A solution! The only pig-free area back then was in an area now known as the Corporate Limits of Hoboken, NJ.
I also discovered that pig feces is not biodegradable, but stays in the soil for thousands of years. It is a source of many microbes and bacteria. Radon gas is a close comparison to what happens to pig feces when it is absorbed into the soil. I guess I should e-mail Governor Paterson.
While researching, I also found the history of green eco-pigs on YouTube. The breed still exists. I hope you like it. It shows how the area of NYC, just off the Holland Tunnel, must have looked in 1644, only they dressed differently and didn't cage the little rascals: