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According to the port, overall throughput increased 4.8 percent for the year.
The third-party logistics provider announced record results, including a 6.1 percent increase in net profits from 2013.
Containers in stack at Centerm contained trichloroisocyanuric acid, according to the terminal operator.
Experimental off dock drop yard at the Port of Los Angeles could help speed containers.
The International Association of Classifications Societies said it would continue to study the report and the will finalized the requirements soon.
The federal agency alleges shipments did not include relevant documents and were improperly packaged and labeled.