Lead (Pb) Standards - Integrated Science Assessments from Review Completed in 2016

The integrated science assessment (ISA) in conjunction with additional technical and policy assessments provides the scientific basis for EPA decisions in the review.

• Integrated Science Assessment for Lead, Final - June 2013
• Integrated Science Assessment for Lead, Third External Review Draft - November 2012
• Integrated Science Assessment for Lead, Second External Review Draft - February 2012
• Integrated Science Assessment for Lead, First External Review Draft - May 2011

You may also be interested in other documents from the lead NAAQS review completed in 2016.