In the winter of 2006, Whitman Mission National Historic Site in Washington State decided to test B20 in their 700-gallon above-ground fuel tank. That was the beginning. Today, Whitman Mission not only uses B30 for heating, they use it in every diesel engine they operate.

"As stewards of the many historic, cultural and natural resources of the park, Whitman Mission National Historic Site is committed to protecting our unique environment," said Bruce Hancock, Chief of Maintenance for Whitman Mission. "As such, we continue to seek opportunities to utilize environmentally sound products that preserve and protect resources. We're totally on board with the National Park Service's (NPS) strategy to 'Go Green'."

With the success of the pilot, Whitman Mission expanded their use of biodiesel in the park to their 2000-gallon fuel storage tank used for heating to the 6,800-square foot visitor's center, and all park equipment designed to use diesel fuel. Over the course of the winter, Whitman Mission experienced outside temperatures as low as 9 degrees Fahrenheit and had no equipment failures, fuel gelling problems, or comfort compromises to the heated spaces.