Phoenix-A prominent Arizona fuel company, Pioneer Distributing Co., has become the latest addition to the Yara/Mansfield Oil Co. Air1 diesel exhaust fluid (DEF) team, responsible for supplying eight counties in the state. In the meantime, Air1 Director Chad Dombroski said Yara and its partner Mansfield are setting their sights on distribution locations in the Pacific Northwest and states in the East and South. Dombroski told Green Markets that 30 distributors will be announced in the next few weeks to cover the Pacific Northwest, New York City, Philadelphia, Atlanta, and several other major market centers. Chicago, Houston, Louisiana, Ohio, Kentucky, and Indiana are already covered, but not with the same concentration as California, which is expected to experience earlier transition of many existing trucks under the Best Available Control Technology regulations promulgated by the California Air Resources Board. Dombroski also reported Yara is developing a robust distribution network for Air1 that will cover all of Canada from Vancouver to the Maritimes.