Memoranda from the Chair of EPA's Science Policy Council to the Science Policy Council and the Science Policy Council Steering Committee.

• Communication I (2005)
• Communication II (2006)

• Memorandum About Implementation of the Cancer Guidelines and Accompanying Supplemental Guidance - Science Policy Council Cancer Guidelines Implementation Workgroup Communication I: Application of the Mode of Action Framework in Mutagenicity Determinations (PDF)(8 pp, 5 MB, October 4, 2005)
• Memorandum: Science Policy Council Cancer Guidelines Implementation Workgroup Communication II: Performing Risk Assessments that include Carcinogens Described in the Supplemental Guidance as having a Mutagenic Mode of Action (PDF)(4 pp, 1 MB, June 14, 2006)