BROOKLYN - Members of Save Gowanus Association are protesting planned development along the Gowanus Canal.

The group held a rally Thursday night to voice their opposition to the Lightstone Group's plan to build a 700-unit residential building on the polluted waterway.

Mayoral candidate Bill Thompson was among those at the protest, saying apartments on the canal will pose a big risk if another Superstorm Sandy hits the area. Save Gowanus also says that putting a complex along the country's largest Superfund site is irresponsible.

Supporters argue that the area is in desperate need of affordable housing.

The Lightstone Group says it's already received the green light from the local community board, and that developers are working with the Environmental Protection Agency, which is implementing the Superfund cleanup of the canal.