As New Jersey environmental regulators and North Wildwood officials continue to be locked in a battle for how best to remedy coastal erosion issues in the city, the problems appear to be growing even more dire. In January,waves broke through sand dunes at 13th Avenue. A vehicle path near 16th Avenue was recently closed. And on Tuesday, residents reported high tides pushing water over the remaining dunes near 14th and 15th Avenues. “I would say the dune, specifically between 13th and 15th, is gone now,” Nic Long, North Wildwood administrator, said Thursday on the phone. Long said it appeared th…