The HC+NOx standard for PWC does not go into effect until 1999. At this time, PWC engines will be required to meet the same standard as OB engines. Initially, OB and PWC are in separate averaging sets; however, beginning in 2001, OB and PWC enter the same averaging set.
No carbon monoxide standard: EPA is not finalizing the carbon monoxide (CO) cap, proposed in the NPRM, of 400 g/kw-hr for OB/PWC gasoline marine engines. See the summary and Analysis of Comments for a discussion of this issue.
C. Administrative Programs
In recognition of the unique nature of the marine industry, EPA is finalizing some innovative administrative programs for OB/PWC. EPA believes the OB/PWC programs introduced here are appropriately designed for OB/PWC
