Alloy Development is seeking to build two 104,000 square-foot office buildings at 234 Butler Street and 242 Nevins Street, in northern Gowanus, located four blocks from the Union Street stop on the R train. DNAinfo reports those are the same properties the city is looking to seize through eminent domain to build two underground sewage tanks. The U.S. Environmental Protection Agency has ordered the construction of the tanks, and is recommending for them to be built under Thomas Green Park, an adjacent block. Alloy has offered the city 138,000 square feet of public park space if they were to develop the properties, which both owners have already agreed to. The EPA says the adjacent park would have to be decontaminated regardless, and the agency will make the final decision on the tanks’ location in the next few weeks.