The results of source attribution are important for informing community emissions reduction programs, which focus on developing and implementing strategies to reduce emission impacts from specific sources contributing to a community’s air quality burden. This document describes source attribution technical approaches recommended by the California Air Resource Board (CARB) to meet the following AB 617 statutory requirements:
California Health and Safety Code § 44391.2 (b) (2) directs CARB to provide “[a] methodology for assessing and identifying the contributing sources or categories of sources, including, but not limited to, stationary and mobile sources, and an estimate of their relative contribution to elevated exposure to air pollution in impacted communities…”
While the Community Air Protection Program Blueprint lays out the general methodology, this document lays out CARB’s five recommended source attribution technical approaches that air districts may apply.
