The workshop was held on November 4 - November 8, 2002, in Dallas, Texas. The workshop was co-chaired by Region 6 and ORD/NCEA, with support from ORD/OSP. The workshop was organized into five sessions: I. Introduction and Overview; II. Planning, Scoping, and Community Issues; III. Approaches to Cumulative Risk Assessment; IV. Putting It Together; V. Policy Implications. Scientists from EPA (regions; Office of Research and Development; Office of Pollution Prevention and Toxics; Office of Air Quality Planning and Standards; Office of Pesticide Programs; Office of Policy, Economics and Innovation) and invited speakers from a government laboratory and a private association presented methods, current research, and case studies on cumulative risk assessment.