Four justices for “do nothing” and let stand the Army Corps “hydrological connection” test
Justice Kennedy for a new (more limited?) “significant nexus” test
Four justices for a new (much much much more limited) “permanent surface waters only” test
Kennedy joined the “surface waters only” justices in judgment (ruling for Mr. Rapanos) but did not join their opinion, making it a plurality opinion not a majority opinion and thus not precidental—i.e., not binding policy (sort of).