Did You Know Your Car’s Tires Could Be Harming Salmon?

To this end, CalTrout also supports Assembly Bill 756 introduced by Assembly Member Diane Papan and sponsored by California Coastkeeper Alliance. This bill would direct Caltrans to further study the issue and assess the use of biofiltration to limit 6PPD from getting into our waterways. Biofiltration works by capturing stormwater before it reaches streams and filtering out pollutants, but could be expensive to implement at scale. Preliminary research suggests that biofiltration could be useful in mitigating 6PPD impacts.