On September 12, the Environmental Protection Agency intends to publish a rule allowing petroleum refiners to continue producing certain diesel fuel containing sulfur for use in older marine and locomotive engines. The final rule was originally issued in April 2010 eliminating the production of diesel fuel containing up to 500 parts per million of sulfur after 2014, but allowing diesel fuel with up to 1,000 parts per million of sulfur. Next week’s rule is the result of a settlement with a group of petroleum refiners that challenged the standards in the U.S. Court of Appeals for the District of Columbia Circuit in June 2010.