Introduction of the new 15ppm diesel into different portions of the diesel fuel supply channel will be managed through staggered compliance dates. For North America, there are currently three S15 (ULSD) implementation timelines.
United States (except California)
| On-Highway Diesel Fuel |
| Refinery |
< 15ppm by June 1, 2006 |
| Terminal |
< 15ppm by September 1, 2006 |
| Retail |
< 15ppm by
|