This is one of a series of bulletins intended to provide up-to-date information on EPA's implementation of the various provisions of the Oil Pollution Act of 1990 (OPA). Each 'Update' highlights activities of EPA headquarters and field staff as they develop and enforce the regulations and policies of the high-priority oil pollution program. The 'Update' includes a spill exercise in Baltimore, MD, practical issues on spill planning/response, the San Diego Oil Spill Conference, the Exxon Valdez (Lessons Learned and What If), oil spills reported in the U.S. (1988-1990), and interim guidelines for bioremediation.