Manufacturers are required to report certain information to Ecology by Chapter 70.285 RCW and Chapter 173-901 WAC. This dataset contains information on the concentrations of copper, nickel, zinc, and antimony in brake friction materials sold in Washington State. Each row represents one formula.

This dataset contains information reported as part the Better Brakes Law, Chapter 70.285 RCW. It contains data tracking the concentrations of copper, nickel, zinc, and antimony in certified brake friction materials. It will first be updated in 2014 and then ever quarter thereafter.

This dataset contains information reported as part the Better Brakes Law, Chapter 70.285 RCW. It contains data tracking the concentrations of copper, nickel, zinc, and antimony in certified brake friction materials. It will first be updated in 2014 and then ever quarter thereafter.

This dataset contains information reported as part the Better Brakes Law, Chapter 70.285 RCW. It contains data tracking the concentrations of copper, nickel, zinc, and antimony in certified brake friction materials. It will first be updated in 2014 and then ever quarter thereafter.

This dataset contains information reported as part the Better Brakes Law, Chapter 70.285 RCW. It contains data tracking the concentrations of copper, nickel, zinc, and antimony in certified brake friction materials. It will first be updated in 2014 and then ever quarter thereafter.

This dataset contains information reported as part the Better Brakes Law, Chapter 70.285 RCW. It contains data tracking the concentrations of copper, nickel, zinc, and antimony in certified brake friction materials. It will first be updated in 2014 and then ever quarter thereafter.