South Coast Air Quality Management District (SCAQMD) proposed Rule 4001 for the purpose of achieving and maintaining PM2.5 emission reductions provided in the Final 2012 Air Quality Management Plan (AQMP). This new proposed rule applies to port-related sources, including ocean going vessels, locomotives, cargo handling equipment, heavy duty trucks, and commercial harbor craft, operating at the Ports of Los Angeles and Long Beach. Under proposed Rule 4001, the Ports are required to report emissions of NOx, SOx, and PM2.5 on an annual basis, beginning in 2014 and continuing through 2020. NOx and SOx emissions will be converted to PM2.5 equivalent emissions based on each pollutant's potential to generate PM2.5. For each reporting year, the PM2.5 equivalent emissions will be compared to 2008 baseline emissions. If the reduction target of 75% is met, then there will be no additional requirements. However, if the reduction target is not met, then the Ports will be required to submit an Emission Reduction Plan proposing control strategies to be implemented within 18 months. Written comments on the proposed rule are due by January 31, 2014.

More information can be found on the SCAQMD website here.