The Clean Air Scientific Advisory Committee released a draft review October 15 of the Environmental Protection Agency’s first draft policy assessment of the ozone air quality standards, finding that the agency has provided a strong rationale for considering standards at 60 to 70 parts per billion, and adequate justification for a lower standard between 50 and 60 ppb. The committee will hold a teleconference November 5 to discuss the policy assessment as well as a draft integrated science assessment and draft risk and exposure assessments.