Today the Environmental Protection Agency (EPA) is taking final action to change the listing of HCFC-141b from acceptable to unacceptable for use as a foam blowing agent under the Significant New Alternatives Policy (SNAP) Program under section 612 of the Clean Air Act. The SNAP program reviews alternatives to Class I and Class II ozone depleting substances and approves use of alternatives which reduce the overall risk to public health and the environment. On July 11, 2000 EPA issued a proposed rule concerning the use of several hydrochlorofluorocarbons (HCFCs) in foam blowing applications. On July 22, 2002, EPA took final action with respect to a number of the HCFCs, but deferred its decision on changing the list for HCFC-141b in foam blowing applications due to the pending production and import ban of HCFC-141b (effective as of January 1, 2003) and incomplete information regarding the technical viability of alternatives. Since the publication of that final rule, EPA received information from outside parties through letters, meetings, and the HCFC-141b Exemption Allowance Petition process (68 FR 2819) that addresses the use of HCFC- 141b in foam blowing applications. On March 10, 2004, EPA issued a Notice of Data Availability (NODA) which contained the new information mentioned above and sought comment on its completeness and accuracy. Today, based on the information contained in the NODA and the comments received on the NODA, EPA is making its final decision to change the listing for use of HCFC-141b as a foam blowing agent from acceptable to unacceptable.