More than a dozen families lost practically everything they owned when a four-alarm blaze ravaged an apartment building on the Union City-Weehawken border Wednesday. North Hudson Regional Fire and Rescue (NHRFR) members responded to 3801 Park Ave. in Union City at 11:44 a.m. and battled the fire for six and half hours before it was declared under control. All told, 88 firefighters participated in the operation, NHRFR spokesman Grant Ludmer said. One firefighter suffered a minor hand injury and none of the residents were injured in the blaze at the three-story building. The American Red Cross’ …