If approved by EPA, new measures to reduce very fine
particulates could lead to greater restrictions on engine
emissions, burning and dust.
The San Joaquin Valley Air Pollution Control District has submitted a revised State Implementation Plan (SIP) for improving air quality in the San Joaquin Valley to meet newer federal standards for PM 2.5 (fine particles) emissions.
The SIP was submitted and approved by the state Air Resources Board in January, and will now be submitted to U.S. EPA for approval. The measures to further reduce very fine particulates could ultimately lead to further restrictions on emissions from engines, burning and other agricultural sources.