Consultation and participation can be useful at most stages of the EIA process, and help to ensure that the EIA is comprehensive and accurate. Chapter 6 discusses ‘levels’ of consultation and participation; how consultation and participation of both the public and statutory consultees can be fostered; and how the results of this consultation can be used to improve a proposed project and speed up its authorization process. How the EIS information is presented, how the various interested parties use that information and how the final decision incorporates the results of the EIA and the views of the various parties are essential components in the EIA process. The chapter discusses effective presentation of the EIS, and the review of EISs and assessment of their accuracy and comprehensiveness. The chapter concludes with a discussion about decision-making and post-decision legal challenges.