Dr. Dennis Kovar Director of Nuclear Physics U.S. Department of Energy SC-23/Germantown Building 1000 Independence Ave. SW Washington, DC 20585-1290 Dear Dennis: I am hereby transmitting a report entitled "Research Plan for Spin Physics at RHIC" dated February 11, 2005. This is one of the action items from the June 30-July 1, 2004 DOE Office of Nuclear Physics Science and Technology Review of the BNL Relativistic Heavy Ion Collider. This report can be found as a pdf file at A hardcopy is being sent today by Federal Express. The present report is currently being reviewed by the experimental collaborations. It is anticipated that the collaborations will, in consultation with the Laboratory management, be developing more complete run plans, integrating the needs of the spin and heavy ion physics programs with the detector upgrade plans, in response to evolving budget guidance. If you have any questions regarding this report, please do not hesitate to contact me, Thomas Ludlam or Sam Aronson. Best Regards, Satoshi Ozaki Acting Associate Laboratory Director for High Energy and Nuclear Physics Brookhaven National Laboratory