If you are a retail dealer, non-retail dealer (e.g., cardlock operator) or wholesale purchaser/ consumer (e.g., fleet fueling facility), located in the City of Portland and selling or dispensing fuel to an end user, then you are required by the Portland Renewable Fuel Standard to sell diesel that contains a minimum of five percent biodiesel (known as B5).
If you are a retail dealer selling diesel that contains 20 percent biodiesel or higher, then you can also sell regular petroleum diesel on the same site.