The U.S. Army Corps of Engineers began work Tuesday to remove the massive build-up of sand on the southern shore of the Manasquan Inlet that has concerned multiple local officials, authorities said. Crews from the Corps have started dredging the waterway and removing the sand on the Point Pleasant Beach side of the inlet, according to Rep. Chris Smith, R-4th Dist. In a follow-up letter to Army Corps Commander Lieutenant Colonel Jeffrey Beeman on Monday, Smith urged the Corps to take immediate action to mitigate what his office called a “growing navigational hazard.” “We are very grateful to Lt…