Costs to deepen the Main Channel and other waterways at the Port of Los Angeles soared to $298 million Thursday night, when the harbor commission approved a plan that calls for dumping some of the dredged dirt at three new disposal sites. The port ran out of room to dump about 3 million cubic yards of dredge material at five previously approved sites. … The dredging project, initially approved in 2002 at a cost of $110 million, calls for deepening the port’s Main Channel, West Basin Channel and East Basin Channel from 45 feet to 53 feet.
