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A top U.S. Environmental Protection Agency official said last week that the agency has “absolutely no intention” of granting the request by truck and engine manufacturer Navistar Inc. for a two-year delay in implementing 2010 federal diesel emission standards for new heavy trucks.

U.S. Environmental Protection Agency Administrator-designate Lisa Jackson said she was “open to discussion” of a carbon tax to limit greenhouse gas emissions and would immediately begin a review of the Bush administration’s denial of California’s request to regulate those emissions from automobiles.

The Environmental Protection Agency, as proposed, has formally required new heavy trucks to have warning lights that indicate when engine emission controls are malfunctioning or deteriorating, starting in 2010.

The U.S. retail diesel average declined 3.6 cents to $2.291 a gallon last week, the 14th consecutive drop, but analysts warned that fleets’ fuel costs are poised to start rising again.

The Environmental Protection Agency said it is concerned that emissions systems using a copper compound that engine maker Cummins Inc. will use in 2010 models could generate “likely human carcinogen” dioxins, in which case it would “likely not certify” the systems.

WASHINGTON — A national commission studying transportation infrastructure funding is set to recommend that Congress raise fuel taxes now but eventually replace them with levies based on miles traveled.

We have to stop going to California; that’s the bottom line. First, they (the ports) put emission standards on who could go into the ports in the Los Angeles area.

As if skyrocketing fuel prices in 2008 were not enough, American trucking companies are now in the midst of the worst recession since the early 1980s.

The U.S. diesel average fell a combined 9.5 cents over the final two weeks of 2008 to $2.327 a gallon, ending the year at its lowest level since June 2005, the Department of Energy reported.