DPM is an air pollutant from ships, trucks and locomotives that is a significant public health problem in the region.
The San Pedro Bay Ports Clean Air Action Plan (CAAP) used 2005 as the baseline year for measuring year-over-year Port-related emissions reductions.
During the three-year reporting period since the 2005 CAAP baseline emissions inventory, overall emissions have declined by nearly 27 percent, which can be attributed to the implementation of a series of pollution-reduction measures by the port and its industry stakeholders.
From 2007 to 2008, there was an average 14 percent decrease in all primary pollutants and port-related operations accounted for seven percent of DPM emissions in the South Coast Air Basin in 2008, a two percent reduction from 2007.
Emission reductions were achieved in all five major source categories: ocean-going vessels, harbor craft, cargo-handling equipment, rail and heavy-duty vehicles.
Additionally, the Port of Los Angeles continues to move containers more efficiently by reducing the amount of emissions per TEU. Emissions reduced per TEU handled between 2005 and 2008 improved between 23 and 35 percent among primary pollutants.