Faced with massive backlogs of containers at the ports in the San Pedro Bay, the operators of the two ports announced a new plan to charge new daily fees to the ocean carriers that permit containers to linger in the ports. Saying that the significant increase in dwell times experienced in ports is making it difficult to clear cargo off the terminals and bring in ships at anchor, the new measure is the latest effort to speed the movement of cargo at the ports of Los Angeles and Long Beach.