I used to live about 3 blocks from here. Within a 2 block radius, there's a children's school, a popular outdoor bar, a hipster pizza restaurant, and some "artist lofts". It's likely that the residents and workers in the area don't have/didn't have knowledge of the former monazite sand site. With the NYC real estate market as it is, there are a bunch of areas with toxic sites like the Gowanus Canal that are people are moving to. http://gothamist.com/2015/07/30/brooklyn_hipster_havens_toxi...