New York (Platts)--1Mar2010/619 pm EST/2319 GMT
Beginning around March 15, the following changes will be made to Platts
US West Coast gasoline assessments: Arizona regular and premium RBOB
assessments will be suspended and Platts will begin assessing summer grade
Arizona Cleaner Burning Gasoline (CBG) with a 8.0 RVP; San Francisco regular
and premium unleaded gasoline will reflect a 9.0 RVP.

Beginning around March 22, Platts will suspend Las Vegas regular and
premium RBOB assessments.

These seasonal RVP changes and grade suspensions are per Kinder Morgan
pipeline specifications.

Separately, on March 15, Platts assessments for Portland regular unleaded
gasoline will reflect a 9.0 RVP. On March 22, Seattle regular and premium
unleaded gasoline will reflect a 13.5 RVP. These seasonal RVP changes are per
Olympic Pipe Line specifications.

For questions or comments, please contact Lisa Street at
lisa_street@platts.com or David Ruisard at david_ruisard@platts.com.