New Jersey’s top environmental official rejected a request from Ocean Grove to delay enforcing an order requiring Sunday morning beach access from its boardwalk amid an ongoing legal challenge. Shawn M. LaTourette, commissioner of the state Department of Environmental Protection, told the Ocean Grove Camp Meeting Association that it is unlikely to win its battle in court to continue blocking entrance to its beaches on Sundays in a tradition that dates back to the community’s religious roots as a Methodist retreat. LaTourette wrote in a 14-page decision letter issued Tuesday that the associatio…