January 18, 2001 - Final rule, Control of Air Pollution From New Motor Vehicles: Heavy-Duty Engine and Vehicle Standards; Highway Diesel Fuel Sulfur Control Requirements, published in the Federal Register.

August 25, 2000 - Letter to Margaret Borushio, Environmental Protection Agency(EPA) providing comments on EPA's proposed Heavy-Duty Engine and Vehicle Standards and Highway Diesel Fuel Sulfur Control Requirements.

June 2, 2000 - Proposed rule, Control of Air Pollution From New Motor Vehicles: Heavy-Duty Engine and Vehicle Standards; Highway Diesel Fuel Sulfur Control Requirements, published in the Federal Register.

May 17, 2000 - The Environmental Protection Agency's (EPA) Fact Sheet on Proposal for Cleaner Heavy-Duty Trucks and Buses and Cleaner Diesel Fuel.

April 25, 2000 - Letter to John Spotila, Administrator, Office of Information and Regulatory Affairs (OIRA), providing supplemental comments of small refiners regarding EPA's Heavy-Duty Engine and Vehicle Standards and Highway Diesel Fuel Sulfur Control Requirements

March 24, 2000 - Report of the Small Business Advocacy Review Panel on Control of Air Pollution from New Motor Vehicle Engines; Heavy-Duty Engine Standards and Diesel Fuel Sulfur Control Requirements.

March 24, 2000 - Letter to Carol M. Browner, Administrator, EPA, regarding the Report of the Small Business Advocacy Review Panel for EPA's rulemaking on the Heavy-Duty Engine Standards and Diesel Fuel Sulfur Control Requirements.

September 20, 1999 - Letter to Thomas E. Kelly, EPA, in response to notification letter regarding Control of Air Pollution From New Motor Vehicle Engines: Proposed Heavy Duty Diesel Fuel Sulfur Engine Standard: Small Business Advocacy Panel.