The Jaguars will have a six-month window to do environmental testing on a chunk of Metropolitan Park and The Shipyards where team owner Shad Khan has shown plans for a new development centered around a Four Seasons Hotel. The Downtown Investment Authority board unanimously gave the go-ahead Wednesday despite a plea by the group Riverfront Parks Now to keep the entire Met Park property off-limits to the testing. "This land is our land," said Denise Reagan, executive director of the Garden Club of Jacksonville and member of the Riverfront Parks Now group. "It’s owned by the public and we care deeply about keeping it and turning it into a premier destination."