On 5 April 1999, the Office of the Chief of Naval Operations (CNO) issued the Navy Policy for Conducting Ecological Risk Assessments (ERAs). The purpose of this policy, which amplifies the 16 May 1997 ASN Environmental Policy Memorandum 97-04, Use of Ecological Risk Assessments, is to provide clarification of the Navy's policy on ERAs and the manner in which ERAs are to be conducted for the Navy Installation Restoration (IR) Program. The goals of the policy are that ERAs conducted for the Navy are scientifically based, defensible, and done in a manner that is cost effective and protective of human health and the environment. The CNO policy applies to ERAs funded under ER,N and under Base Realignment and Closure (BRAC). To view or download the policy, click here.